Patent ID: 12247592

In the figures:100: drill rig;101: first traveling motor;102: second traveling motor;103: drill rig multi-way valve;104: drill rig auxiliary execution mechanism;105: first drill rig main oil line;106: first drill rig main oil line;201: first main pump;202: second main pump;203: auxiliary pump;204: first switching unit;2041: logical switching solenoid valve;205: first logical unit;206: second logical unit;207: control system;2071: operating element;2072: display element;2073: control element;208: assistance pump;209: second switching unit;2091: first directional valve;2092: second directional valve;2093: pilot oil source;210: third logical unit;211: fan pump;212: fan motor;213: heat dissipater;214: approaching apparatus; and215: hydraulic oil tank.

DETAILED DESCRIPTION

The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely some but not all of the embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative and definitely is not construed as any limitation on the present invention and application or use of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

It should be noted that similar reference signs and letters represent similar items in the following accompanying drawings, and thus a specific item, once defined in one accompanying drawing, does not need to be further discussed in subsequent accompanying drawings.

In addition, terms “first”, “second”, and the like are merely for ease of description and cannot be understood as a limitation on the quantity and the like. Moreover, a word “connection” may represent “mechanical connection”, “electric connection”, “signal connection”, or the like, determined by a specific situation.

A power system in the present invention is mainly for a large electric drill rig for blast holes, and provides hydraulic power for a traveling motor of the drill rig, to implement long-distance transferring of the drill rig without a power source (for example, the electric drill rig is disconnected from a power supply, or an engine or a hydraulic component of the drill rig fails) A first traveling motor101, a second traveling motor102, a drill rig multi-way valve103, and a plurality of drill rig auxiliary execution mechanisms104are arranged on a drill rig100. The first traveling motor101and the second traveling motor102are configured to provide the hydraulic power for a crawler of the drill rig. The drill rig multi-way valve103is mainly configured to control a hydraulic system of the drill rig, and control how a hydraulic oil line of the drill rig works. The drill rig auxiliary execution mechanism104includes an outrigger mechanism and the like on the drill rig100, and includes a plurality of hydraulic motors and hydraulic cylinders.

FIG.1is a system block diagram of the power system according to an embodiment of the present invention.FIG.2is a connection block diagram of a control system according to an embodiment of the present invention. As shown inFIG.1andFIG.2, the power system includes a first main pump201, a second main pump202, an auxiliary pump203, a first switching unit204, a first logical unit205, a second logical unit206, and a control system207. The auxiliary pump203is connected to the first switching unit204. The first traveling motor101is connected to the first logical unit205. The second traveling motor102is connected to the second logical unit206. The control system207is connected to the first switching unit204, the first main pump201, the second main pump202, and the auxiliary pump203. When the hydraulic power is provided for the drill rig100, the first main pump201is connected to the first logical unit205, the second main pump202is connected to the second logical unit206, the first logical unit205and the second logical unit206are separately controlled by the first switching unit204to disconnect a hydraulic oil line of the drill rig100from the first traveling motor101and the second traveling motor102and connect an oil line between the first main pump201and the first traveling motor101and an oil line between the second main pump202and the second traveling motor102, the first traveling motor101is driven by the first main pump to work, and the second traveling motor102is driven by the second main pump202to work.

When the drill rig needs to be transferred, after the power system in the embodiment of the present invention is connected to the drill rig, the control system controls the first main pump201, the second main pump202, and the auxiliary pump203to work, and controls the first switching unit204to perform switching control to connect oil lines between the auxiliary pump203and the first logical unit205and the second logical unit206. After hydraulic oil discharged by the auxiliary pump arrives at the first logical unit205and the second logical unit206, the first logical unit205is controlled to disconnect a first drill rig main oil line105of the drill rig from the first traveling motor101, meanwhile, the oil line between the first main pump201and the first traveling motor101is connected, and the hydraulic oil discharged by the first main pump201enters the first traveling motor, to drive the first traveling motor101to work. Similarly, the second logical unit206is controlled to disconnect a second drill rig main oil line106of the drill rig from the second traveling motor102, meanwhile, the oil line between the second main pump202and the second traveling motor102is connected, and the hydraulic oil discharged by the second main pump202enters the second traveling motor, to drive the second traveling motor102to work. Therefore, providing the hydraulic power to transfer the drill rig with the power system provided in the present invention saves time and labor. In addition, a position of a cable connection point does not need to be changed to repeatedly connect a cable, so that operation efficiency is greatly improved, and risks are reduced. Moreover, in the present invention, the hydraulic power is used, which is lower in cost than electric power.

In an embodiment of the present invention, the first switching unit204includes a logical switching solenoid valve2041. The logical switching solenoid valve2041is a two-position three-way solenoid directional valve. As shown inFIG.3, a port A of the logical switching solenoid valve2041is connected to the auxiliary pump203, and a port P is connected to the first logical unit205and the second logical unit206. When the port A and the port P are connected, the first switching unit204is on; and when the port A and a port T are connected, the first switching unit is off. The control system207controls the logical switching solenoid valve2041to perform switching control, so that whether the hydraulic oil discharged by the auxiliary pump203can enter the first logical unit205and the second logical unit206may be controlled by the first switching unit204.

In an embodiment of the present invention, the first logical unit205and the second logical unit206are logical valves, and any commercially available logical valve can implement a corresponding function.

Further, in an embodiment of the present invention, the provided power system not only can provide the hydraulic power to transfer the drill rig, but also can provide temporary hydraulic power for the drill rig in an emergency, for example, in a case of a power failure, a motor failure, or an engine failure, to assist the drill rig. The power system provides the hydraulic power for the drill rig auxiliary execution mechanism104of the drill rig, to implement emergency assistance on the drill rig. Therefore, to implement assistance, in an embodiment of the present invention, the power system further includes an assistance pump208, a second switching unit209, and a third logical unit210. The assistance pump208is connected to the second switching unit209. Both the assistance pump208and the second switching unit209are connected to the control system207. The third logical unit210is connected to the drill rig multi-way valve103. When assistance hydraulic power is provided for the drill rig100, the second switching unit209is connected to the third logical unit210.

When the assistance hydraulic power needs to be provided for the drill rig, after the power system is connected to the drill rig, the control system207controls the auxiliary pump203to work, and controls the second switching unit209to perform oil line switching, so that the hydraulic oil discharged by the auxiliary pump enters the third logical unit210. Then, the third logical unit210controls a hydraulic oil line between the auxiliary pump203and the drill rig multi-way valve103to be connected. Then, the hydraulic oil enters the drill rig auxiliary execution mechanism104through the drill rig multi-way valve103, to drive the drill rig auxiliary execution mechanism104to work, to assist the drill rig.

The power system inevitably generates heat in a working process, resulting in a rise of an oil temperature of the hydraulic oil. Therefore, in an embodiment of the present invention, the power system further includes a fan pump211, a fan motor212, and a heat dissipater213that are connected in sequence. The heat dissipater213is connected to the third logical unit210.

When the power system does not need to provide hydraulic power externally, heat dissipation is performed on the hydraulic oil. In a heat dissipation process, heat dissipation may be performed on the hydraulic oil through two oil lines. On one oil line, the fan pump211sucks in the hydraulic oil in a hydraulic oil tank215, and then discharges the hydraulic oil to the fan motor212, the fan motor212works to drive a fan to operate for rapid heat dissipation, and then the hydraulic oil enters the heat dissipater213, and after heat dissipation, returns the hydraulic oil tank215. On the other oil line, the auxiliary pump203sucks the hydraulic oil from the hydraulic oil tank215, and discharges the hydraulic oil, and the hydraulic oil enters the heat dissipater213through the second switching unit209and the third logical unit210, and after heat dissipation, flows into the hydraulic oil tank215. Therefore, through the two heat dissipation lines, the power system of the present invention has better heat dissipation effects, and damage caused by heating to the system is avoided.

In an embodiment of the present invention, the third logical unit210is a logical valve. As shown inFIG.4, the second switching unit209includes a first directional valve2091, a second directional valve2092, and a pilot oil source2093. The first directional valve2091is a two-position three-way pilot controlled directional valve. The second directional valve2092is a solenoid directional valve. A port A of the first directional valve2091is connected to the auxiliary pump203, and a port P is connected to the drill rig multi-way valve103. A port A of the second directional valve2092is connected to a valve element of the first directional valve2091, and a port P is connected to the pilot oil source2093. When the port A and the port P of the second directional valve2092are connected, and the port A and the port P of the first directional valve2091are connected, the second switching unit209is on; and when T ports and the A ports are connected, the second switching unit209is off.

The power system in the foregoing embodiment includes three working modes: a traveling mode, an assistance mode, and a standby mode. In the traveling mode, the power system drives the first traveling motor101and the second traveling motor102to work to provide traveling power for the drill rig100. In the assistance mode, the power system provides power for the drill rig auxiliary execution mechanism of the drill rig100. In the standby mode, the power system outputs no hydraulic power externally.

When the power system is in the traveling mode, the first switching unit204is on, the second switching unit209is off, the first logical unit205and the second logical unit206operate to disconnect oil lines between a hydraulic system of the drill rig and the first traveling motor101and the second traveling motor102, connect the oil line between the first main pump201and the first traveling motor101, and connect the oil line between the second main pump202and the second traveling motor102, and the power system provides the traveling power for the drill rig100. When the power system is in the assistance mode, the first switching unit204is off, the second switching unit209is on, both the first logical unit205and the second logical unit206do not operate, the third logical unit210operates, an oil line between the assistance pump208and the drill rig multi-way valve103is connected, and the power system provides the assistance hydraulic power for the drill rig auxiliary execution mechanism104of the drill rig100. When the power system is in the standby mode, both the first switching unit204and the second switching unit209are off, the first logical unit205, the second logical unit206, and the third logical unit210do not operate, and the fan pump211works to drive the fan motor212to work to cool hydraulic oil.

Therefore, the power system provided in the embodiment of the present invention may be switched in the three modes to provide the hydraulic power for transferring and emergency assistance of the drill rig, which saves time and labor and can reduce risks and costs.

In an embodiment of the present invention, the control system207includes an operating element2071, a display element2072, and a control element2073. The control element2073is connected to the first switching unit204and the second switching unit209. Both the display element2072and the operating element2071are connected to the control element2073.

The control element2073is an existing controller, for example, a programmable logic controller (PLC) or a control card. The display element2072is a display. If the display element2072is a touchscreen or a display with a button, then at this time, the display element2072may be used as the operating element2071, that is, the display element2072and the operating element2071form an integrated device.

In addition, if the display element2072is a control and display integrated machine, the operating element2071, then at this time, the display element2072, and the control element2073form an integrated device. In an embodiment of the present invention, the operating element2071is a wireless handle. The wireless handle may perform wireless communication with the control element2073through, for example, Bluetooth, wireless fidelity (Wifi), or Zigbee. Therefore, when the system provides the hydraulic power for the drill rig, remote control may be performed through the wireless handle, which brings more convenience to operation.

Further, in an embodiment of the present invention, for ease of connecting the power system to the drill rig, the system further includes an approaching apparatus214. The approaching apparatus214is an electric capstan. The approaching apparatus is connected to the control system207. When the hydraulic power needs to be provided for the drill rig, a distance between the power system and the drill rig may be first shortened through the approaching apparatus, to align the drill rig to facilitate connection, so that labor is saved.

In an embodiment of the present invention, a traveling power station is further provided. The traveling power station includes the power system provided in the foregoing embodiment. Specifically, the traveling power station is designed as a vehicle including a frame, a wheel, and the like. Then, the power system in the embodiment of the present invention is mounted to the frame. When the traveling power station is used to provide hydraulic power for a drill rig, the traveling power station may be directly pulled nearby the drill rig. Then, the drill rig and the traveling power station are pulled close to and aligned with each other through the approaching apparatus214. Then, the traveling power station is connected to the drill rig. Then the traveling power station provides the hydraulic power for transferring or emergency assistance of the drill rig. Convenience is brought, and risks and costs can be reduced.

Hereto, the present invention has been described in detail. Some details known to this art are not described, to avoid the idea of the present invention being obscured. According to the foregoing descriptions, a person skilled in the art may completely know how to implement the technical solutions disclosed herein.

The descriptions of the present invention are given for the sake of example and illustration, and are not exhaustive or limiting the present invention to the disclosed forms. Many modifications and variations are obvious to a person of ordinary skill in the art. The embodiments are selected and described to better explain the principles and the practical application of the present invention, enabling a person of ordinary skill in the art to understand the present invention and design various embodiments with various modifications for specific uses.