Patent Publication Number: US-10307880-B1

Title: Floor grinder and polisher

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to U.S. Provisional Application, Ser. No. 62/416,433, entitled “FLOOR GRINDER AND POLISHER,” filed on Nov. 2, 2016, the entire contents of which is hereby incorporated by reference. 
    
    
     TECHNICAL FIELD 
     This disclosure relates to grinding and polishing treatment of floor surfaces, e.g., concrete floor surfaces. 
     BACKGROUND 
     Floor surfaces, such as concrete floor surfaces, can be treated with a floor treatment system that grinds or polishes a floor surface. Floor treatment systems incorporating a grinding and polishing machine are used to grind and polish floor surfaces, such as concrete floor surfaces, to a finished floor surface. Grinding and polishing machines sometimes include a grinding and polishing head with a rotating friction surface to engage a floor surface. Typically, a grinding and polishing head is mounted on a frame with one or two other grinding and polishing heads, and the frame and heads constitute a walk-behind polishing and grinding machine that is pushed by an operator during operation. 
     SUMMARY 
     This disclosure describes floor surface treatments, for example, for grinding and polishing a floor surface. 
     In some aspects of the disclosure, an apparatus for treating a floor surface includes a floor grinder-polisher system including a support frame and a plurality of grinding heads mounted on the support frame, a power source connected to the plurality of grinding heads and configured to supply power to the plurality of grinding heads, a controller configured to control the plurality of grinding heads, and a vehicle connected to the support frame and configured to support the floor grinder-polisher system and the power source. 
     This, and other aspects, can include one or more of the following features. Each grinding head in the plurality of grinding heads can include a grinding surface configured to rotate and engage a floor surface. The controller can be configured to independently control a rotational speed of each grinding surface of the grinding heads. Each grinding head in the plurality of grinding heads can include an electric motor or a hydraulic motor configured to rotate a respective grinding surface of each grinding head. The grinding surface can include at least one of diamond cutters or carbide cutters. The grinding surface of one grinding head in the plurality of grinding heads can include about 24 diamond cutters. Each grinding head in the plurality of grinding heads can be independently mounted on the support frame. Each grinding head can be adjustable on the support frame. Each grinding head in the plurality of grinding heads can be removably connected to the support frame. The plurality of grinding heads can include at least five grinding heads mounted on the support frame. Three or more grinding heads of the at least five grinding heads can be disposed on the support frame in a staggered, zig-zag pattern. The apparatus can include at least one weight tray disposed on at least one grinding head of the plurality of grinding heads, the at least one weight tray configured to provide an additional downforce on the at least one grinding head of the plurality of grinding heads. The support frame can be removably connected to the vehicle. The support frame can removably connect to the vehicle with a hitch pin system. The support frame can be adjustable. The support frame can include extendible arms configured to adjust a lateral width of the support frame. The power source can be mounted directly on the vehicle. The power source can be mounted on a tow cart connected to the vehicle, the tow cart configured to be towed by the vehicle. The power source can include a generator configured to supply electric power to the plurality of grinding heads. The generator can be a 200 amp to 250 amp generator. A drive system of the vehicle can include a chain driven sprocket. The vehicle can include three or more wheels. The wheels can include non-marking tires. The apparatus can include a control panel proximate the power source and electrically connected between the power source and the plurality of grinding heads, the control panel configured to house the controller. The apparatus can include a breaker box electrically connected between the power source and the plurality of grinding heads. The apparatus can include a water management system including a water tank and a water supply hose, the water management system configured to supply water to the floor grinder-polisher system. The water supply hose can be at least partially integral to the vehicle. The water tank can be disposed on a tow cart configured to be towed by the vehicle. The apparatus can include a vacuum system supported by the vehicle. The controller can be configured to control at least one of a speed of the plurality of grinding heads, a speed of the vehicle, or flow rate of water supplied to the plurality of grinding heads from the water management system. The controller can be configured to provide speed and load readings of the plurality of grinding heads. The support frame can connect to the vehicle at a front end of the vehicle. 
     In some aspects of the disclosure, an apparatus for treating a floor surface include a floor grinder-polisher system including a support frame and at least one grinding head mounted on the support frame, a power source electrically connected to the at least one grinding head and configured to supply power to the at least one grinding head, and a vehicle configured to support the floor grinder-polisher system and the power source. This, and other aspects, can include one or more of the following features. The power source can be mounted on the vehicle. The power source can be mounted on a tow cart connected to the vehicle, the tow cart configured to be towed by the vehicle. The power source can include a generator configured to supply electric power to the at least one grinding head. Each grinding head in the at least one grinding head can include a 30 horsepower electric motor, and the generator can include a 200 amp to 250 amp generator. The support frame can be removably connected to the vehicle. The support frame can removably connect to the vehicle by a hitch pin system. The at least one grinding head can be removably connected to the support frame. The at least one grinding head can include five or more grinding heads, and at least three grinding heads of the five or more grinding heads can be disposed on the support frame in a staggered, zig-zag pattern. 
     In some aspects of the disclosure, a method for treating a floor surface includes providing a floor treatment apparatus including a floor grinder-polisher system having a support frame and a plurality of grinding heads supported by the support frame, a power source connected to the at least one grinding head, and a vehicle connected to the support frame and supporting the floor grinder-polisher system and the power source, and supplying power to the plurality of grinding heads from the power source mounted directly on the vehicle. 
     This, and other aspects, can include one or more of the following features. The method can include at least one of grinding or polishing a floor surface with the plurality of grinding heads. Supplying power to the plurality of grinding heads can include supplying electric power to a plurality of electric motors of the plurality of grinding heads. The method can include disconnecting the support frame from the vehicle. The method can include controlling, with a controller, a rotational speed of grinding surfaces of the plurality of grinding heads. The controller can be configured to independently control each grinding head in the plurality of grinding heads. The method can include controlling, with the controller, a speed of the vehicle. 
     In some aspects of the disclosure, an apparatus for treating a floor surface includes a floor grinder-polisher system having a support frame and a plurality of grinding heads mounted on the support frame. Each grinding head includes a grinding surface configured to rotate and engage a floor surface. The apparatus further includes a power source connected to the plurality of grinding heads and configured to supply power to the plurality of grinding heads, a controller configured to control the plurality of grinding heads, and a vehicle connected to the support frame and configured to support the power source. 
     This, and other aspects, can include one or more of the following features. The controller can be configured to independently control a rotational speed of each grinding surface of the plurality of grinding heads. Each grinding head in the plurality of grinding heads can include a motor configured to rotate a respective grinding surface of each grinding head. The motor can be an electric motor. The grinding surface of one grinding head in the plurality of grinding heads can include about 24 diamond cutters. Each grinding head of the plurality of grinding heads can be independently mounted on the support frame. Each grinding head can be adjustable on the support frame. Each grinding head of the plurality of grinding heads can be removably connected to the support frame. The grinding heads can include at least five grinding heads mounted on the support frame. Three or more grinding heads of the five grinding heads are disposed on the support frame in a staggered, zig-zag pattern. The apparatus can include a weight tray disposed on at least one of the grinding heads, the weight tray configured to provide an additional downforce on the grinding heads. The support frame can be removably connected to the vehicle. The support frame can removably connect to the vehicle with a hitch pin system. The support frame can rotatably connect to the vehicle. The support frame can be adjustable in length between a first lateral side and a second, opposite lateral side of the support frame. The support frame can include extendible arms configured to adjust the length of the support frame. The apparatus can include a water management system including a water tank and a water supply hose, where the water management system supplies water to the floor grinder-polisher system for a wet-grinding operation. The water supply hose can be at least partially integral to the vehicle. The water tank can be disposed on a tow cart to be towed by the vehicle. The controller can control a flow rate of water supplied to the plurality of grinding heads from the water management system. The controller can control a speed of the grinding heads, a speed of the vehicle, or both. The controller can provide speed and load readings of the grinding heads to an indicator on the vehicle. Each grinding head can include a 30 horsepower electric motor, and the power source can include a 200 amp to 250 amp generator. 
     In some aspects of the disclosure, a method for treating a floor surface includes supporting, with a vehicle, a floor grinder polisher system and a power source. The floor grinder polisher system includes a support frame and a plurality of grinding heads mounted on the support frame, each grinding head in the plurality of grinding heads including a grinding surface configured to rotate and engage a floor surface. The method includes supplying power, with the power source, to the plurality of grinding heads, engaging, with the plurality of grinding heads, a floor surface, and controlling, with a controller, a speed of the plurality of grinding heads. 
     This, and other aspects, can include one or more of the following features. Controlling a speed of the plurality of grinding heads can include controlling, with the controller, a rotational speed of the grinding surfaces of the plurality of grinding heads. Controlling a speed of the plurality of grinding heads can include independently controlling, with the controller, each grinding head of the plurality of grinding heads. 
     In some aspects of the disclosure, an apparatus for treating a floor surface includes a floor grinder-polisher system including a support frame and at least one grinding head removably connected to the support frame, where the at least one grinding head includes a grinding surface configured to rotate and engage a floor surface. The apparatus includes a power source connected to the floor grinder-polisher system and configured to supply power to the at least one grinding head, a controller configured to control the plurality of grinding heads, and a vehicle connected to the support frame and configured to support the power source. The support frame can be removably connected to the vehicle. 
     The details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages of the subject matter will become apparent from the description, the drawings, and the claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an orthogonal views of an example floor treatment system. 
         FIG. 2  is a side view of an example floor treatment system. 
         FIG. 3  is an upper side view of an example floor treatment system. 
         FIG. 4A  is a schematic top view of an example support frame and grinding heads,  FIGS. 4B-4C  are schematic partial top views of portions of the example support frame of  FIG. 4A , and  FIG. 4D  is a bottom perspective view of an example grinding head. 
         FIG. 5A  is a side view of an example floor treatment system. 
         FIG. 5B  is a close-up side view of an example floor treatment system with door panels of a breaker box and a control panel in an open position. 
     
    
    
     Like reference numbers and designations in the various drawings indicate like elements. 
     DETAILED DESCRIPTION 
     This disclosure describes a floor surface treatment system for grinding and polishing a floor surface, such as concrete, terrazzo, tile mastic, and/or other floor surfaces. The floor surface can be indoors or outdoors, and the floor surface treatment system may not be limited by environmental conditions. A floor surface (e.g., a new concrete floor surface, a floor surface with abrasions, voids, or other flaws, and/or other floor surfaces) can undergo a floor treatment operation to grind and/or polish the floor surface, for example, to achieve a smooth finished floor surface. This disclosure describes a floor surface treatment system with one or more grinding heads (e.g., one to seven grinding heads) mounted on a support frame, where the support frame is connected to and driven by a vehicle. In some implementations, the floor surface treatment system includes a power source (e.g., generator) mounted on, towed by, or otherwise connected to the vehicle to power the grinding heads on the support frame. 
     In conventional floor treatment systems, a grinding machine includes one to three grinding heads mounted on a walk-behind frame meant to be pushed by an operator walking behind the grinding machine. Also, in some conventional floor treatment systems, the grinding heads are connected to a remote, distanced power source via long power cables extending between the movable grinding machine and the stationary, remote power source. However, this disclosure describes a floor treatment system including a vehicle, where the power source and the support frame holding the grinding heads are supported and driven by the vehicle, and where the vehicle can be driven by an operator. The vehicle can include a steering configuration, such as a steering wheel, a joystick, two separate throttles that control the rotational speed and direction of drive wheels, or another steering configuration, an accelerator for manual control by an operator, and/or can include one or more controllers to control speed, direction, and/or other aspects of the vehicle, for example, based on parameters of a grinding and polishing operation of the grinding heads. 
     In some implementations, a floor treatment system that holds about seven (e.g., 5 to 7) grinding heads can treat a larger amount of floor surface with added consistency and in the same or less time than, for example, a conventional one- to three-grinding head treatment system. In some examples, mounting a power source on the vehicle or towing the power source behind the vehicle can reduce or eliminate the need for large, heavy power cables extending between a remote power source and the grinding heads, and avoids the risks and dangers of cutting the cables and/or running over the cables with the grinding machine and power loss associated with transmission over long cables. In certain implementations, a vehicle that can be controlled to operate at a constant speed and/or direction can produce a more consistent and even floor finish, for example, compared to a hand-push grinding machine where speed may not be consistent. 
       FIG. 1  is an orthogonal view of an example floor treatment system  100 , and  FIG. 2  is a side view of the example floor treatment system  100 . The example floor treatment system  100  includes a floor grinder-polisher system  102  that includes a support frame  104  and one or more grinding heads (not shown) mounted on the support frame  104 , a power source  106  connected to grinding heads and configured to supply power to the grinding heads, and a vehicle  108  connected to the support frame  104 . The vehicle  108  connects to the floor grinder-polisher system  102  and supports the power source  106 . In the example floor treatment system  100 , the power source  106  is mounted directly on a bed of the vehicle  108 . In some implementations, the power source  106  is mounted on a tow cart connected to the vehicle  108 , and the tow cart can be towed behind the vehicle  108  during a floor grinding and polishing operation performed by the example floor treatment system  100 . In the example system  100  of  FIGS. 1 and 2 , the power source  106  is a generator configured to supply electric power to the one or more grinding heads. For example, the power source  106  can include a 200 amp to 250 amp generator, and each grinding head can include an electric motor powered by the generator. The size and/or capacity of the generator can vary, for example, based on the minimum and maximum loads of the grinding heads. In some implementations, the generator can be rated at less than 200 amps, greater than 200 amps, or anywhere at or between 200 and 300 amps. In some examples, the generator can be powered by propane fuel, which may be preferable for use in indoor environments where air quality is a particular concern. However, the generator can also be powered by other fuel sources, such as gasoline, diesel, or other fuels. In some instances, the floor treatment system  100  includes emission particulate apparatuses, commonly described as scrubbers or equal, to filter air, exhaust, or other. Although  FIGS. 1 and 2  show the power source  106  as including a generator, the power source  106  can take a variety of forms. For example, the power source  106  can include a hydraulic system including a hydraulic pump, hydraulic fluid tank, one or more control valves, and respective hydraulic lines extending to respective grinding heads. 
     The vehicle  108  can take a variety of forms. For example, the vehicle  108  of the example floor treatment system  100  of  FIGS. 1 and 2  includes an operator cab  110  and a storage bed  112 . The storage bed  112  of the example system  100  supports the power source  106  (e.g., generator), and can include mounting brackets, support plates, tie-downs, a security frame, and/or other structures to mount, support, and/or secure the power source  106  on the storage bed  112  of the vehicle  108 . In some examples, the vehicle  108  is rated to support a weight of the power source  106  and an operator of the vehicle  108 , and/or the vehicle  108  is rated to tow the weight of the power source  106  and an associated tow cart. For example, the vehicle  108  can be rated to directly support a generator up to 6,250 pounds on the storage bed  112  of the vehicle  108 . The example operator cab  110  includes a seat  114 , steering wheel  116 , accelerator and brake pedals  118 , and operator controls  120 . The vehicle  108  also includes three or more wheels  122  (e.g., four wheels), for example, with non-marking tires to substantially or completely prevent tire marking of a floor surface on which the vehicle  108  is moving. In some implementations, the vehicle  108  includes a chain-driven drive system, a belt-driven drive system, an electric drive system, and/or a hydraulic drive system. In the example vehicle  108  of  FIGS. 1 and 2 , the drive system is chain-driven, which is less prone to breakage or maintenance than, for example, a belt-driven drive system or a hydraulic drive system. By way of further example, the breakage of a hydraulic drive system may result in the leakage of hydraulic fluid on the floor surface causing damage to the floor surface and the system  100  itself. However, the drive system of the vehicle  108  can vary. The drive system of the vehicle  108  can be adjusted to fit a grinding and polishing operation. For example, sprockets of the drive system of the vehicle  108  can be adjusted to drive the vehicle  108  at an optimal speed for grinding and/or polishing (e.g., very slowly, for example, between 1 foot per second and 5 feet per second) to ensure sufficient grinding and/or polishing of a floor surface has occurred as the vehicle  108  is driven during a grinding and/or polishing operation. 
       FIG. 3  is an upper side view of the example floor treatment system  100 , and shows the grinding heads  200  connected to the support frame  104 , where the support frame  104  is connected to the vehicle  108 .  FIG. 4A  is a schematic top view of the support frame  104  and grinding heads  200 , and  FIGS. 4B-4C  are schematic partial top views of portions of the support frame  104  of  FIG. 4A . Each grinding head  200  is independently mounted on the support frame  104 , for example, using brackets. Each grinding head  200  is also removable from the support frame  104 , and is adjustable on the support frame  104  in that the grinding head  200  can be mounted at a varying height and/or location on the support frame  104 . In some instances, the grinding heads  200  can float when connected to the support frame, in that the grinding heads  200  can mount to the support frame  104  with a vertical float. For example, one or more of the grinding heads  200  can mount to the support frame such that they are rigidly mounted in the horizontal and lateral directions (i.e., laterally and longitudinally), but the grinding head(s)  200  is free to float vertically (e.g., perpendicular to the floor surface) during a grinding operation. Each grinding head  200  includes a head frame  202  with bracket attachments (e.g., to attach the grinding head  200  to the support frame  104 ), one or more grinding surfaces  204  proximate a first, bottom end of the grinding head, and a motor  208  configured to move the one or more grinding surfaces  204 . In certain instances, the grinding surfaces are gear-driven, for example, instead of belt driven as gears can be less prone to failure and maintenance than belts. The grinding surfaces  204  are configured to rotate and engage a floor surface. In the example system  100  of  FIG. 4A , the grinding surfaces  204  are shown schematically as circular discs with three cutting elements  206  mounted on, or integral to, each of the circular discs.  FIG. 4D  is a bottom perspective view of an example grinding head  200 , showing the example grinding surfaces  204  and respective cutting elements  206  of the grinding surfaces  204 . In some examples, the cutting elements  206  include circular, semicircular, or straight-edged cutters having a substantially or completely flat surface profile that is parallel to or slightly angularly offset from a floor surface that the cutters are configured to engage. The slight angular offset (e.g., between zero and 15 degrees) of the cutter profile from a flat floor surface can vary, for example, based on operation type (e.g., grinding, polishing, or other). The cutting elements  206  can take a variety of forms. For example, the cutting elements  206  can include diamond cutters, carbide cutters, and/or other cutter material types with sufficient hardness to grind and/or polish a floor surface, for example, substantially without chipping or breaking. The grinding heads  200  are mounted on the support frame  104  such that, in operation, the cutting elements  206  on the grinding surfaces  204  engage a floor surface.  FIG. 4D  shows eight grinding surfaces and a corresponding 24 cutting elements  206  per grinding head  200 . However, the number of grinding surfaces  204  and/or cutting elements  206  can vary. For example, the grinding head  200  can include up to 24 cutting elements  206 , such as  10 ,  12 ,  18 , or another number of cutting elements  206  per grinding head  200 . 
     In some examples, the support frame  104  of the example system  100  can support up to seven grinding heads  200 , and each grinding head can include grinding surfaces supporting twenty-four cutting elements  206  per grinding head  200 . In other words, the example system  100  can support up to 168 cutting elements  206  supported by up to seven grinding heads  200  mounted on the support frame  104 . In the example system  100  of  FIG. 3 , each motor  208  is configured to rotate the grinding surfaces  204  of its respective grinding head  200 . In some implementations, a motor can control grinding surfaces of more than one grinding head. The motors  208  can vary in type, for example, in that the motors  208  can include electric motors, hydraulic motors, and/or other types of motors. In some examples, the motor  208  of one or more of the grinding heads  200  includes a thirty-horsepower electric motor. 
     The grinding heads  200  can be mounted to the support frame  104  in a variety of patterns and orientations. For example,  FIGS. 3 and 4A  show the grinding heads  200  mounted on the support frame  104  in a zig-zag pattern between a lateral left side of the support frame  104  and a lateral right side of the support frame  104 . The zig-zag pattern includes a staggered layout of the grinding heads  200 , for example, such that three grinding heads  200  are aligned in a first row at a front end of the support frame  104  with lateral gaps between the three grinding heads  200 , and four other grinding heads  200  are aligned in a second row behind the first row of grinding heads and adjacent to the gaps between the three grinding heads  200  of the first row. In this example pattern, the grinding surfaces  204  of the respective grinding heads  200  cover a continuous area along the lateral width of the support frame  104 . For example, the grinding heads  200  are positioned to have sufficient overlap between the grinding heads  200  to ensure complete floor grinding coverage during operation of the system  100 . The staggered, zig-zag pattern can, in some examples, ensure there are no lateral gaps between grinding surfaces of the grinding heads  200 , for example, as the vehicle  108  moves forward (e.g., in a longitudinal direction). In some examples, the grinding heads  200  are oriented to cover a grinding width between 40 inches and 21 feet. In other words, the grinding heads  200  can be disposed on the support frame  104  to cover a continuous width of up to 21 feet of grinding and/or polishing width. The grinding heads  200  can be oriented in other configurations, as well. In some implementations, the system  100  includes three grinding heads  200  aligned in the first row at the front end of the support frame  104  with less than four (e.g., 0, 1, 2, or 3) grinding heads  200  in the second row behind the first row of the support frame  104 . In certain implementations, any number of grinding heads  200  (e.g., up to seven) can be positioned in any position or configuration of the seven grinding head locations on the support frame  104 . 
     During operation of the system  100 , one or more or all of the grinding heads  200  can be simultaneously operable. In some instances, one or more grinding heads can be inoperable, for example, to avoid one or more areas of grinding and/or polishing, such as to avoid a drain or other more fragile element of a floor surface. In some examples, one to seven of the grinding heads  200  are operable during a grinding and/or polishing operation of the system  100 . For example, one, two, three, four, five, six, or seven grinding heads  200  may operate at one time, while six, five, four, three, two, one, or zero grinding heads  200 , respectively, are inoperable, or turned off. 
     In some implementations, the system  100  can include one or more weight trays  216  disposed on at least one of the grinding heads  200 , for example, to provide an additional downforce on at least one of the grinding heads  200  as it engages a floor surface during a grinding and/or polishing operation.  FIG. 3  shows two weight trays  216  on each grinding head  200  on either side of the motor  208 . However, any number of the grinding heads  200  can include 0, 1, 2, or more weight trays  216  each. The weight trays  216  can hold weights to provide or contribute to the additional downforce on the grinding heads  200 . The downforce on one or more of the grinding heads  200  can vary, for example, based on a grinding operation or a polishing operation. For example, more downforce on one or more of the grinding heads  200  may be desired during a grinding operation than a polishing operation. Alternatively, more downforce on one or more of the grinding heads  200  may be desired during a polishing operation than a grinding operation. The downforce on each grinding head  200  can vary, for example, based on the weight of the grinding head  200  itself, and based on any added weight from a weight tray  216 . For example, each grinding head  200  can include a weight tray  216  that holds up to 240 pounds. Also, each grinding head  200  can weigh up to 1200 pounds by itself. Thus, each grinding head  200  plus weights on a respective weight tray  216  can weigh up to 1440 pounds. 
     The support frame  104  connects to the vehicle  108  at a longitudinally front end of the vehicle  108 , and the vehicle  108  is configured to push the support frame  104  with the grinding heads  200  mounted to the support frame. In some implementations, the support frame  104  rotatably connects to the vehicle  108  such that the support frame is free to pivot about a lateral axis A-A. In certain instances, the pivot connection about lateral axis A-A between the support frame  104  and the vehicle  108  allows the support frame  104  and the mounted grinding heads  200  to float on a floor surface without rigidly attaching to the vehicle  108 , while still allowing the vehicle  108  to push and direct the support frame and grinding heads during operation. The rotatable connection of the support frame  104  to the vehicle allows the support frame  104  and the mounted grinding heads  200  to pivot vertically, upwards or downwards, relative to the vehicle  108 . This rotatable connection can promote a consistent and flat grinding surface of the grinding heads  200  against a floor in uneven, rounded, or otherwise inconsistent floor surface. For example, in a curved floor surface, the grinding heads  200  on the support frame  104  can maintain flat engagement with a floor surface even when a vehicle moves along an adjacent portion of the floor surface that is not parallel to or consistent with the grinding surface. In other implementations, the support frame  104  rigidly mounts to the vehicle  108 , for example, and the vehicle  108  can contribute to a downforce acting on the grinding heads  200 . 
     In some implementations, the support frame  104  is removably connected to the vehicle  108 , for example, by a hitch pin system. For example, during a grinding operation, the vehicle  108  can support a first support frame holding a number of (e.g., five) grinding heads configured to grind a floor surface. At a conclusion of the grinding operation, the vehicle  108  can disconnect from the first support frame holding the five grinding heads, and connect a second support frame holding a number of (e.g., seven) polishing heads (e.g., grinding heads configured to polish a floor surface) and proceed with a polishing operation. 
     The support frame  104  can take a variety of forms and shapes. The example support frame  104  of  FIG. 4A  includes two main lateral bars  210  extending laterally outward from a connection point on the vehicle  108 , and three box frames  212  extending longitudinally forward from the main lateral bars  210 .  FIG. 4A  shows main lateral bars  210  as two lateral bars; however, the support frame can include a single lateral support bar alternatively or in addition to the two main lateral bars  210 . Grinding heads  200  are disposed in the area between a first pair of adjacent box frames  212 , in the area between a second pair of adjacent box frames  212 , laterally outward of the laterally outermost box frames  212 , and longitudinally forward of each box frame  212 . In some examples, such as the example support frame  104  of  FIG. 4A , the support frame  104  includes outrigger arms  214  extending substantially diagonally from the vehicle  108  (not shown) to a laterally outward portion of the support frame  104 . The outrigger arms  214  can provide additional support and stability to the support frame  104 , for example, for consistent and stable grinding operations. 
     In some implementations, the support frame  104  is adjustable, for example, in lateral length and/or positioning of connection points for the grinding heads. For example, the main lateral bars  210  can adjust (e.g., telescope) in length to achieve a laterally longer or shorter width of the support frame  104 . In certain instances, the support frame  104  can measure up to twenty-two feet in width. In some examples, the box frames  212  can adjust in length separate from or in addition to the main lateral bars  210 . The adjustability of the support frame  104  can accommodate a variety of grinding head sizes, grinding head orientations, and grinding head placements on the support frame  104 . The support frame  104  can be made up of a variety of materials. For example, the support frame  104  can comprise stainless steel tubing (e.g., square tubing, circular tubing, and/or tubing made from other materials), other steel tubing, angled steel, or other steel material. 
     In some implementations, the floor treatment system  100  includes a water management system (not shown) that includes a water tank and a water supply hose. The water tank can be mounted directly on the vehicle  108  (e.g., directly on storage bed  112 ), or can be mounted on a tow cart and towed by the vehicle  108  during operation. In certain implementations, the water supply hose can be partially or completely integral to the vehicle  108 . For example, the vehicle  108  can include a water hose input  300  at a first location on the vehicle  108 , for example, at a rear of the vehicle  108 , and a water hose output  302  at a second location on the vehicle  108 , for example, at a front of the vehicle  108 . Individual water lines can connect the water hose output  302  with one or more or all of the grinding heads  200 , for example, to supply water to the grinding heads during a grinding and/or polishing operation of the floor treatment system  100 . In certain implementations, the water management system is configured to permit wet grinding of the floor surface. For example, the water management system can supply water to the floor surface, the cutting elements  206  and cutters, or both, for wet-grinding the floor surface. The water management system can supply water in front of or onto the cutting elements  206  during operation of the system  100 . In some examples, providing water to the floor surface, cutting elements  206 , or both during a grinding and/or polishing operation can allow for more heavy duty material removal in a grinding and/or polishing operation, smoother operation of the grinding heads  200 , and/or a smoother floor surface, for example, compared to a dry-grinding operation. In some implementations, the floor treatment system  100  includes a vacuum system (not shown) supported by the vehicle  108 , for example, to suction dust, debris, water, and/or other material proximate the locations of the grinding heads  200 . The vacuum system can be supported directly on the vehicle  108 , mounted on a tow cart towed by the vehicle  108 , or otherwise supported by the vehicle  108  to allow vacuum tubes to be disposed proximate to the grinding heads  200 . 
     In some implementations, the example floor treatment system  100  includes one or more controllers to control the grinding heads  200 . For example, one controller can control between one and seven grinding heads. In some examples, the floor treatment system  100  includes multiple controllers, where a first controller controls a first number of grinding heads and a second controller controls a second number of grinding heads. In certain instances, a first controller controls up to three grinding heads, a second controller controls up to three grinding heads, and a third controller controls one grinding head. The number of controllers and their respective number of controlled grinding heads can vary. Referring back to  FIGS. 1 and 2 , the example floor treatment system  100  can include one or more control panels  220  (two shown in  FIG. 1 ), for example, between the power source  106  (e.g., generator) and a number of the grinding heads  200 . The control panels  220  can be disposed proximate to the power source  106  and electrically connected between the power source  106  and the grinding heads  200 . In some examples, the control panel(s)  220  house the one or more controllers. The controller(s) is configured to control various aspects of a grinding and/or polishing operation performed by the example floor treatment system  100 . For example, the controller can independently or collectively control the movement (e.g., rotational speed or speeds) of the grinding heads  200 , and in particular, the grinding surfaces  204 , circular discs, and/or cutting elements  206 . In some examples, the rotational speed or speeds of the grinding surfaces  204  vary by operation (e.g., grinding or polishing), floor surface, vehicle  108  speed, vehicle mode (e.g., straight line driving, turning), and/or other factors. For example, with the vehicle  108  driving in a straight line, the rotational speeds of the grinding surfaces  204  of all of the grinding heads  200  can be constant; whereas, during a turning movement of the vehicle  108 , a radially outward grinding head can have a higher (or lower) grinding surface rotational speed than a grinding surface rotational speed of a radially inward grinding head. 
     In some implementations, the controller(s) is communicably coupled to the vehicle  108  (e.g., the drive system, operator controls, and/or other controls of the vehicle  108 ), the water management system, vacuum system, and/or other aspects of the floor treatment system  100 . The controller can be configured to control the grinding or polishing speeds of one or more or all of the grinding heads, a speed of the vehicle  108 , and/or a flow rate of water from the water management system to the grinding heads. For example, the controller can be configured with predefined operating functions, for example, such that the floor treatment system  100  can be set to run a first particular function with minimal or no operator control. The first particular function can include a predefined grinding surface speed for one or more of the grinding heads, a predefined vehicle speed, and/or a predefined vehicle direction. In certain instances, the controller can measure and provide speed and/or load readings of the grinding heads, individually or collectively. The readings can be displayed on an indicator on the vehicle, for example, that can be read and/or interpreted by an operator of the vehicle. The vehicle can include a display system that includes one or more indicators, for example, that displays information from aspects of the floor treatment systems described herein. Example aspects include rotational speed of the grinding surfaces of the grinding heads, vehicle speed, flow rate of water from the water management system, electrical loads on the grinding heads, electrical outputs of the power source or generator, and/or other aspects. 
       FIG. 5A  is a side view of an example floor treatment system  500 . The floor treatment system  500  is the same as the floor treatment system  100  of  FIGS. 1-4D , except that the example floor treatment system  500  includes a breaker box  502  connected to the power source  106 .  FIG. 5B  is a close-up side view of the example floor treatment system  500  with door panels of the breaker box  502  and the control panel  220  in an open position. The breaker box  502  can limit an electrical output (e.g., voltage or current output) from the power source  106  (i.e., generator) to the grinding heads. The breaker box  502  can limit an electrical output from the power source  106  to the grinding heads, for example, at 200 amps, 250 amps, or another current limit value, and/or limit an electrical output to the controller(s), for example, at 60 amps, 100 amps, and/or another current limit value. The breaker box  502  can be disposed adjacent to or otherwise proximate to the power source  106 , for example, to reduce any loss in electrical output between the power source  106  and the breaker box  502 , and between the breaker box  502  and the grinding heads. 
     In some examples, the breaker box can include two 100 amp breakers, where a first of the 100 amp breakers feeds a first controller, and a second of the 100 amp breakers feeds a second controller. The first controller and the second controller can each control between one and three grinding heads. In certain examples, the breaker box can include two 60 amp breakers, where a first of the 60 amp breakers is dedicated to a small controller controlling one grinding head, and the second of the 60 amp breakers is a spare to tap into any other equipment (e.g., a 480V 3-phase equipment) as desired. 
     A number of implementations have been described. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the disclosure.