Patent Publication Number: US-11390489-B2

Title: Mine vertical shaftlifting apparatus, mine vertical shaft lifting system and control method therefor

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a U.S. National Stage entry under 35 U.S.C. § 371 based on International Application No. PCT/CN2018/112937, filed on Oct. 31, 2018, which was published under PCT Article 21(2). The embodiment of the priority applications are hereby incorporated herein in their entirety by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of mine vertical shaft hoisting, and in particular to a hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof. 
     BACKGROUND 
     In the existing multi-rope-friction hoisting systems for vertical shafts, due to the heavy load and the high speed of the hoisting equipment, in the process of high-speed winding of the hoisting steel-wire rope, static displacement will be generated at the bottom of the transmission rope of the hoisting system, which causes the tension of the guiding wheel to fluctuate cyclically and has a negative impact on the life of the transmission rope of the hoisting system. At present, in the vertical-shaft multi-rope-friction hoisting systems used in ultra-deep wells, a regulating system that can guarantee the constant tension of the hoisting rope is very rare. 
     Therefore, in view of the above existing technique, how to design a tension regulating system with simple structure, self-adapting regulation, high regulation sensitivity, and good effect has become a problem to be considered and solved by those skilled in the art. 
     SUMMARY 
     In order to solve the above technical problems, the present disclosure discloses a hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof, which solve the problem of the existing hoisting systems that static displacement will be generated at the bottom of the transmission rope, which causes the tension of the guiding wheel to fluctuate cyclically. 
     According to an aspect of the present disclosure, a hoisting apparatus for a mine vertical shaft is disclosed, comprising: a driving device provided at a wellhead; a guiding device provided in a vertical shaft, wherein a position of the guiding device corresponds to a position of the driving device; a transmission rope wound around the driving device and the guiding device, wherein the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device provided in the vertical shaft, wherein the guiding device is movably provided at the tension regulating device, and the tension regulating device is for regulating a distance between the driving device and the guiding device and the tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device. 
     Optionally, the tension regulating device comprises a hydraulic device, the hydraulic device comprises a hydraulic cylinder and a piston rod engaged with the hydraulic cylinder, the hydraulic cylinder of the hydraulic device is fixedly provided in the vertical shaft, and a free end of the piston rod of the hydraulic device is fixedly connected to the guiding device. 
     Optionally, there are two hydraulic devices, and the two hydraulic devices are provided oppositely at two ends of the guiding device. 
     Optionally, the hydraulic cylinders of the two hydraulic devices are communicated with each other via an oil pipe. 
     Optionally, the driving device comprises: a hoisting drum provided above the wellhead, wherein part of the transmission rope is wound around the hoisting drum; and an electric motor drivingly connected to the hoisting drum. 
     Optionally, the guiding device comprises: a bearing seat provided at the tension regulating device; a guiding wheel axle rotatably provided in the bearing seat; and a guiding wheel nested to the guiding wheel axle, wherein part of the transmission rope is wound around the guiding wheel. 
     Optionally, the two hydraulic devices are respectively provided at two ends of the guiding wheel axle, and a free end of the piston rod is fixedly connected to the bearing seat. 
     Optionally, the transmission rope comprises: a hoisting steel-wire rope wound around the driving device, wherein the hoisting steel-wire rope has a first end and a second end, the first end of the hoisting steel-wire rope is fixedly connected to a counterweight container, and the second end of the hoisting steel-wire rope is fixedly connected to a hoisting container; and a tail rope wound around the guiding device, wherein the tail rope has a first end and a second end, the first end of the tail rope is fixedly connected to the counterweight container, the second end of the tail rope is fixedly connected to the hoisting container, and the hoisting steel-wire rope, the tail rope, the counterweight container and the hoisting container are connected to form a ring-shaped transmission structure. 
     Optionally, there are a plurality of transmission ropes, the plurality of transmission ropes are wound around the driving device and the guiding device, and the plurality of transmission ropes are provided at intervals. 
     According to another aspect of the present disclosure, a hoisting system for a mine vertical shaft is disclosed, comprising: the above-described hoisting apparatus for a mine vertical shaft; a tension detecting device configured to obtain an actual tension value of the transmission rope; and a tension controlling device connected to the tension regulating device and the tension detecting device and configured to control the tension regulating device. 
     According to another aspect of the present disclosure, a method for controlling the above-described hoisting system for a mine vertical shaft is disclosed, comprising the following steps: step S 10 : obtaining an actual tension value F1 of the transmission rope and obtaining a preset tension value F0; and step S 20 : controlling the tension regulating device to adjust the distance between the driving device and the guiding device according to the actual tension value F1 and the preset tension value F0. 
     Optionally, the step S 20  comprises the following steps: step S 21 : when F1&gt;F0, controlling the tension regulating device to reduce the distance between the driving device and the guiding device, to reduce the tension of the transmission rope; and step S 22 : when F1&lt;F0, controlling the tension regulating device to increase the distance between the driving device and the guiding device, to increase the tension of the transmission rope. 
     Optionally, the step S 20  further comprises the following step: step S 23 : when the actual tension value F1 is equal to the preset tension value F0, keeping, by the tension regulating device, the distance between the driving device and the guiding device unchanged. 
     According to another aspect of the present disclosure, a hoisting system for a mine vertical shaft is disclosed, comprising: the above-described hoisting apparatus for a mine vertical shaft; a pressure detecting device provided in the hydraulic cylinder of the hydraulic device and configured to obtain an actual pressure value P1 in the hydraulic cylinder; and a pressure controlling device connected to the hydraulic device and the pressure detecting device and configured to control the hydraulic device. 
     According to another aspect of the present disclosure, a method for controlling the above-described hoisting system for a mine vertical shaft is disclosed, comprising the following steps: step S 10 : obtaining an actual pressure value P1 in the hydraulic cylinder and obtaining a preset pressure value P0; and step S 20 : controlling the hydraulic device to adjust the distance between the driving device and the guiding device according to the actual pressure value P1 and the preset pressure value P0. 
     Optionally, the step S 20  comprises the following steps: step S 21 : when P1&gt;P0, controlling the hydraulic device to reduce the distance between the driving device and the guiding device, to reduce the tension of the transmission rope; and step S 22 : when P1&lt;P0, controlling the hydraulic device to increase the distance between the driving device and the guiding device, to increase the tension of the transmission rope. 
     Optionally, the step S 20  further comprises the following step: step S 23 : when the actual pressure value P1 is equal to the preset pressure value P0, keeping, by the hydraulic device, the distance between the driving device and the guiding device unchanged. 
     In the present disclosure, by arranging the guiding device on the tension regulating device, the distance between the driving device and the guiding device can be regulated by using the tension regulating device, and the tension of the transmission rope can be controlled by regulating the distance between the driving device and the guiding device, so as to realize the real-time regulation of the tension of the transmission rope to a constant value during the whole lifting process effectively, thereby reducing the tension fluctuation generated during the operation of the hoisting system and improving the safety of the hoisting system. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic diagram of the structure of the hoisting apparatus for a mine vertical shaft according to an embodiment of the present disclosure; 
         FIG. 2  is a side view of a schematic diagram of the structure of the hoisting apparatus for a mine vertical shaft according to an embodiment of the present disclosure; 
         FIG. 3  is a diagram of the working principle of the hoisting system for a mine vertical shaft according to an embodiment of the present disclosure; and 
         FIG. 4  is a diagram of the working principle of the hoisting system for a mine vertical shaft according to another embodiment of the present disclosure. 
     
    
    
     In the drawings:  10 , driving device;  11 , hoisting drum;  12 , electric motor;  20 , guiding device;  21 , bearing seat;  22 , guiding wheel axle;  23 , guiding wheel;  30 , transmission rope;  31 , hoisting steel-wire rope;  32 , tail rope;  40 , hydraulic device;  41 , hydraulic cylinder;  42 , piston rod;  43 , oil pipe;  51 , counterweight container; and  52 , hoisting container. 
     DETAILED DESCRIPTION 
     The present disclosure will be further described below in conjunction with embodiments, but it is not limited to the contents of the description. 
     The present disclosure discloses a hoisting apparatus for a mine vertical shaft comprising: a driving device  10 , a guiding device  20 , a transmission rope  30  and a tension regulating device. The driving device  10  is provided at the wellhead. The guiding device  20  is provided in a vertical shaft, and the position of the guiding device  20  corresponds to the position of the driving device  10 . The transmission rope  30  is wound around the driving device  10  and the guiding device  20 , and the driving device  10  is drivingly connected to the guiding device  20  via the transmission rope  30 . A tension regulating device is provided in the vertical shaft, and the guiding device  20  is movably provided at the tension regulating device. The tension regulating device is used for regulating the distance between the driving device  10  and the guiding device  20 , and controls the tension of the transmission rope  30  by regulating the distance between the driving device  10  and the guiding device  20 . 
     In the present disclosure, by arranging the guiding device  20  on the tension regulating device, the distance between the driving device  10  and the guiding device  20  can be regulated by using the tension regulating device, and the tension of the transmission rope  30  can be controlled by regulating the distance between the driving device  10  and the guiding device  20 , so as to realize the real-time regulation of the tension of the transmission rope  30  to a constant value during the whole lifting process effectively, thereby reducing the tension fluctuation generated during the operation of the hoisting system and improving the safety of the hoisting system. 
     In the above embodiment, the tension regulating device comprises a hydraulic device  40 . The hydraulic device  40  comprises a hydraulic cylinder  41  and a piston rod  42  engaged with the hydraulic cylinder  41 . The hydraulic cylinder  41  of the hydraulic device  40  is fixedly provided in the vertical shaft. The free end of the piston rod  42  of the hydraulic device  40  is fixedly connected to the guiding device  20 . During the lifting process, as the lifting height increases, the static displacement at the bottom of the hoisting apparatus changes all the time, and its tension also changes all the time. The hydraulic device  40  adjusts the distance between the driving device  10  and the guiding device  20  to synchronously control the tension of the transmission rope  30  and keep the tension of the transmission rope  30  constant, thereby reducing the tension fluctuation generated during the operation of the hoisting system and improving the safety of the hoisting system. 
     In the above embodiment, there are two hydraulic devices  40 , and the two hydraulic devices  40  are provided oppositely at the two ends of the guiding device  20 . By providing the hydraulic devices  40  at the two ends of the guiding device  20  respectively, the guiding device  20  is more stable, thereby improving the stability of the hoisting apparatus. 
     In the above embodiment, the hydraulic cylinders  41  of the two hydraulic devices  40  are communicated with each other via an oil pipe  43 . By providing the oil pipe  43  to communicate the two hydraulic cylinders  41 , the pressures in the two hydraulic cylinders  41  change synchronously, so that the process of regulating the guiding device  20  is smoother. 
     In the above embodiment, the driving device  10  comprises a hoisting drum  11  and an electric motor  12 . The hoisting drum  11  is provided above the wellhead, and part of the transmission rope  30  is wound around the hoisting drum  11 . The electric motor  12  is drivingly connected to the hoisting drum  11 . 
     In the above embodiment, the guiding device  20  comprises: a bearing seat  21 , a guiding wheel axle  22  and a guiding wheel  23 . The bearing seat  21  is provided at the tension regulating device. The guiding wheel axle  22  is rotatably provided in the bearing seat  21 . The guiding wheel  23  is nested to the guiding wheel axle  22 , and part of the transmission rope  30  is wound around the guiding wheel  23 . In a particular embodiment, the two hydraulic devices  40  are provided at the two ends of the guiding wheel axle  22 , and the free end of the piston rod  42  is fixedly connected to the bearing seat  21 . By providing the piston rods  42  of the hydraulic devices  40  at the two ends of the guiding wheel axle  22  respectively, the regulating process can be smoothly controlled when regulating the tension of the transmission rope  30 , thereby improving the stability of the hoisting apparatus. 
     The rodless chambers of the two hydraulic cylinders  41  provided at the two ends of the guiding wheel axle  22  are connected by the oil pipe  43 . The two hydraulic cylinders  41  are controlled by synchronous oil-pressure communication. Under the action of the oil pressure, the piston rods  42  of the two hydraulic cylinders  41  move vertically, to realize the regulation of the transmission rope  30  and keep it constant. 
     In the above embodiment, the transmission rope  30  comprises a hoisting steel-wire rope  31  and a tail rope  32 . The hoisting steel-wire rope  31  has a first end and a second end. The hoisting steel-wire rope  31  is wound around the driving device  10 . The first end of the hoisting steel-wire rope  31  is fixedly connected to a counterweight container  51 , and the second end of the hoisting steel-wire rope  31  is fixedly connected to a hoisting container  52 . The tail rope  32  has a first end and a second end. The tail rope  32  is wound around the guiding device  20 . The first end of the tail rope  32  is fixedly connected to the counterweight container  51 , and the second end of the tail rope  32  is fixedly connected to the hoisting container  52 . The hoisting steel-wire rope  31 , the tail rope  32 , the counterweight container  51  and the hoisting container  52  are connected to form a ring-shaped transmission structure. By providing the counterweight container  51  and the hoisting container  52 , the weight difference between the two sides of the transmission rope  30  can be reduced by changing the weight of the counterweight container  51  or the hoisting container  52 , thereby reducing the fluctuating stress of the driving device and improving the transmission efficiency. 
     In the above embodiment, there are a plurality of transmission ropes  30 , the plurality of transmission ropes  30  are wound around the driving device  10  and the guiding device  20 , and the plurality of transmission ropes  30  are provided at intervals. Thus, the hoisting apparatus is more steady and reliable. 
     According to another aspect of the present disclosure, a hoisting system for a mine vertical shaft is further disclosed, comprising: the above-described hoisting apparatus for a mine vertical shaft, a tension detecting device, and a tension controlling device. The tension detecting device is provided at the tension regulating device and is configured to obtain the actual tension value of the transmission rope  30 . The tension controlling device is connected to the tension regulating device, the tension controlling device is also connected to the tension detecting device, and the tension controlling device is configured to control the tension regulating device. 
     According to another aspect of the present disclosure, a method for controlling the above-described hoisting system for a mine vertical shaft is further disclosed, comprising the following steps: 
     step S 10 : obtaining an actual tension value F1 of the transmission rope  30  and obtaining a preset tension value F0; and 
     step S 20 : controlling the tension regulating device to adjust the distance between the driving device  10  and the guiding device  20  according to the actual tension value F1 and the preset tension value F0. 
     In the above embodiment, the step S 20  comprises the following steps: 
     step S 21 : when F1&gt;F0, controlling the tension regulating device to reduce the distance between the driving device  10  and the guiding device  20 , to reduce the tension of the transmission rope  30 ; and 
     step S 22 : when F1&lt;F0, controlling the tension regulating device to increase the distance between the driving device  10  and the guiding device  20 , to increase the tension of the transmission rope  30 . 
     In the above embodiment, the step S 20  further comprises the following step: 
     step S 23 : when the actual tension value F1 is equal to the preset tension value F0, keeping, by the tension regulating device, the distance between the driving device  10  and the guiding device  20  unchanged. 
     According to another aspect of the present disclosure, a hoisting system for a mine vertical shaft is further disclosed, comprising: the above-described hoisting apparatus for a mine vertical shaft, a pressure detecting device, and a pressure controlling device. The tension regulating device comprises the hydraulic device  40 . The pressure detecting device is provided in the hydraulic cylinder  41  of the hydraulic device  40  and configured to obtain an actual pressure value P1 in the hydraulic cylinder  41 . The pressure controlling device is connected to the hydraulic device  40 , the pressure controlling device is also connected to the pressure detecting device, and the pressure controlling device is configured to control the hydraulic device  40 . 
     According to another aspect of the present disclosure, a method for controlling the above-described hoisting system for a mine vertical shaft is further disclosed, comprising the following steps: 
     step S 10 : obtaining an actual pressure value P1 in the hydraulic cylinder  41  and obtaining a preset pressure value P0; and 
     step S 20 : controlling the hydraulic device  40  to adjust the distance between the driving device  10  and the guiding device  20  according to the actual pressure value P1 and the preset pressure value P0. 
     In the above embodiment, the step S 20  comprises the following steps: 
     step S 21 : when P1&gt;P0, controlling the hydraulic device  40  to reduce the distance between the driving device  10  and the guiding device  20 , to reduce the tension of the transmission rope  30 ; and 
     step S 22 : when P1&lt;P0, controlling the hydraulic device  40  to increase the distance between the driving device  10  and the guiding device  20 , to increase the tension of the transmission rope  30 . 
     In the above embodiment, the step S 20  further comprises the following step: 
     step S 23 : when the actual pressure value P1 is equal to the preset pressure value P0, keeping, by the hydraulic device  40 , the distance between the driving device  10  and the guiding device  20  unchanged. 
     By adopting the above technical solutions, the present disclosure has the following advantages: 
     (1) The present disclosure is simple in structure, convenient to install and highly practical. 
     (2) It can adjust the tension value of the transmission rope in real time by moving the piston rod of the hydraulic cylinder under oil-pressure control. 
     Apparently, the above embodiments of the present disclosure are merely examples to clearly illustrate the present disclosure, and are not intended to limit the embodiments of the present disclosure. For those of ordinary skill in the art, variations or modifications in various forms can be made on the basis of the above description. It is not possible to give an exhaustive list of all embodiments herein. Any obvious variations or modifications derived from the technical solutions of the present disclosure shall still fall within the protection scope of the present disclosure.