ELECTRICAL SYSTEM AND MOBILE POWER PLANT

Abstract

An electrical system and a mobile power plant, related to the technical field of engineering machinery.The electrical system comprises a first main pump, a second main pump, an auxiliary pump, a first switching unit, a first logic unit, a second logic unit, and a control system; the auxiliary pump is connected to the first switching unit; a first travel motor is connected to the first logic unit, and a second travel motor is connected to the second logic unit; the control system is connected to the first switching unit, the first main pump, the second main pump, and the auxiliary pump; and when hydraulic power is provided for a drilling machine, the first main pump is connected to the first logic unit, the second main pump is connected to the second logic unit, the first main pump is used to operate the first travel motor, and the second main pump is used to operate the second travel motor.By means of the present invention, hydraulic power can be provided for the movement of the drilling machine, ease of operation, and risks and costs can be reduced.

Description

Power system and travel power station Technical Field

[0001] The present invention belongs to the technical field of engineering machinery, and in particular relates to a power system and a travel power station. Background Art

[0002] Electric drill rigs in open-pit mines are typically used for blasthole drilling operations in large open-pit mines. Electric drill rigs are powered by high-voltage electricity exceeding 6,000 volts. To power the electric drill rigs, numerous high-voltage utility poles and power connections are installed along the various drilling platforms surrounding the mine. While operating on a drilling platform, the high-voltage cable at the rear of the drill rig connects to the power connection on the utility pole. When the electric drill rig needs to be moved to the next platform or for other long-distance relocation needs, the rig must be relocated. However, the high-voltage cable is limited in length. During relocation, the drill rig must be stopped and reconnected after a period of travel. This repetitive process is highly inefficient. Furthermore, frequent disconnection and reconnection of the power connection is extremely dangerous. Furthermore, the high-voltage cable is heavy, requiring manual movement during relocation, which is time-consuming and labor-intensive. Alternatively, some mines use mobile electric vehicles to supply high-voltage power to the drill rigs. These vehicles travel with the rig and transport it to the new platform, but the cost of these vehicles is high.

[0003] Summary of the Invention

[0004] Technical problem: The present invention addresses the problems that arise during the long-distance transfer of electric drilling rigs and provides a power system and a walking power station based on the system, thereby providing hydraulic power for the drilling rig during the transfer process, improving efficiency, and reducing risks and costs.

[0005] Technical solution: On the one hand, the present invention provides a power system for providing hydraulic power for a drilling rig, wherein the drilling rig is provided with a first travel motor, a second travel motor, a drilling rig multi-way valve, and a plurality of drilling rig auxiliary actuators, characterized in that the power system includes: a first main pump, a second main pump, an auxiliary pump, a first switching unit, a first logic unit, a second logic unit, and a control system; the auxiliary pump is connected to the first switching unit; the first travel motor is connected to the first logic unit, and the second travel motor is connected to the second logic unit; the control system is connected to the first switching unit, the first main pump, the second main pump, and the auxiliary pump;

[0006] When providing hydraulic power for the drilling rig, the first main pump is connected to the first logic unit, and the second main pump is connected to the second logic unit. The first switching unit controls the first logic unit and the second logic unit respectively to disconnect the hydraulic oil circuit of the drilling rig itself from the first travel motor and the second travel motor, and connect the oil circuit from the first main pump to the first travel motor and the oil circuit from the second main pump to the second travel motor. The first main pump is used to drive the first travel motor to work, and the second main pump is used to drive the second travel motor to work.

[0007] Furthermore, the power system also includes a rescue pump, a second switching unit and a third logic unit. The rescue pump is connected to the second switching unit. The rescue pump and the second switching unit are both connected to the control system. The third logic unit is connected to the drilling rig multi-way valve. When providing rescue hydraulic power to the drilling rig, the second switching unit is connected to the third logic unit.

[0008] Furthermore, the power system further includes a fan pump, a fan motor and a radiator connected in sequence, and the radiator is connected to the third logic unit.

[0009] Furthermore, the power system includes three working modes, namely walking mode, rescue mode and standby mode. In the walking mode, the power system drives the first walking motor and the second walking motor to work, providing walking power for the drilling rig;

[0010] In the rescue mode, the power system provides power to the drilling rig auxiliary actuator of the drilling rig;

[0011] In the standby mode, the power system does not output hydraulic power to the outside.

[0012] Furthermore, when the power system is in the travel mode, the first switching unit is turned on, the second switching unit is turned off, the first logic unit and the second logic unit are actuated to cut off the oil circuits of the hydraulic system of the drilling rig from the first travel motor and the second travel motor, and to connect the oil circuits between the first main pump and the first travel motor, and between the second main pump and the second travel motor, so that the power system provides travel power for the drilling rig;

[0013] When the power system is in rescue mode, the first switching unit is closed, the second switching unit is opened, the first logic unit and the second logic unit are inactive, the third logic unit is active, the oil circuit between the rescue pump and the drilling rig multi-way valve is connected, and the power system provides rescue hydraulic power to the drilling rig auxiliary actuator of the drilling rig;

[0014] When the power system is in standby mode, the first switching unit and the second switching unit are both closed, the first logic unit, the second logic unit and the third logic unit are all inactive, the fan pump works to drive the fan motor to work and cool the hydraulic oil.

[0015] Furthermore, the first switching unit includes a logic switching solenoid valve 2041, which is a two-position three-way solenoid reversing valve. The A port of the logic switching solenoid valve 2041 is connected to the auxiliary pump, and the P port is connected to the first logic unit and the second logic unit. When the A port and the P port are connected, the first switching unit is in an open state.

[0016] Furthermore, the second switching unit includes a first reversing valve, a second reversing valve and a pilot oil source, wherein the first reversing valve is a two-position three-way hydraulically controlled reversing valve, and the second reversing valve is an electromagnetic reversing valve; port A of the first reversing valve is connected to the auxiliary pump, and port P is connected to the drilling rig multi-way valve; port A of the second reversing valve is connected to the valve core of the first reversing valve, and port P is connected to the pilot oil source;

[0017] When the port A of the second reversing valve is connected to the port P, and the port A of the first reversing valve is connected to the port P, the second switching unit is in an open state.

[0018] Furthermore, the control system includes an operating element, a display element, and a control element. The control element is connected to the first switching unit and the second switching unit. The display element and the operating unit are both connected to the control element.

[0019] Furthermore, the operating element is a wireless handle, and the wireless handle is wirelessly connected to the control element.

[0020] Furthermore, the power system also includes an approaching device, which is connected to the control system.

[0021] On the other hand, the present invention provides a walking power station, which includes the power system.

[0022] Compared with the prior art, when the drilling rig needs to be transferred, the power system in the embodiment of the present invention is connected to the drilling rig, and the first main pump, the second main pump and the auxiliary pump are controlled to work through the control system. At the same time, the first switching unit is controlled to perform switching control, and the oil circuit from the auxiliary pump to the first logic unit and the second logic unit is connected. After the hydraulic oil output by the auxiliary pump reaches the first logic unit and the second logic unit, the first logic unit is controlled to disconnect the first drilling rig main oil circuit from the first travel motor on the drilling rig. At the same time, the oil circuit from the first main pump to the first travel motor is controlled to be connected, and the hydraulic oil output by the first main pump enters the first travel motor to drive the first travel motor to work; similarly, the second logic unit is controlled to disconnect the second drilling rig main oil circuit from the second travel motor on the drilling rig. At the same time, the oil circuit from the second main pump 202 to the second travel motor is controlled to be connected, and the hydraulic oil output by the second main pump 202 enters the second travel motor to drive the second travel motor 102 to work. Therefore, the power system provided by the present invention provides hydraulic power for drilling rig transfers, saving time and effort. Furthermore, since there is no need to relocate cable connection points or repeatedly connect cables, operational efficiency is greatly improved and risks are reduced. Furthermore, because the present invention utilizes hydraulic power, it is less expensive than electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a system block diagram of a power system according to an embodiment of the present invention;

[0024] FIG2 is a connection block diagram of a control system according to an embodiment of the present invention;

[0025] FIG3 is a schematic diagram of a first switching unit in an embodiment of the present invention;

[0026] FIG4 is a schematic diagram of a second switching unit in an embodiment of the present invention.

[0027] The figure shows: 100, drilling rig; 101, first travel motor; 102, second travel motor; 103, drilling rig multi-way valve; 104, drilling rig auxiliary actuator; 105, first drilling rig main oil circuit; 106, first drilling rig main oil circuit; 201, first main pump; 202, second main pump; 203, auxiliary pump; 204, first switching unit; 2041, logic switching solenoid valve; 205, first logic unit; 206, second logic unit; 207, control system; 2071, operating element; 2072, display element; 2073, control element; 208, rescue pump; 209, second switching unit; 2091, first reversing valve; 2092, second reversing valve; 2093, pilot oil source; 210, third logic unit; 211, fan pump; 212, fan motor; 213, radiator; 214, approach device; 215, hydraulic oil tank. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] Furthermore, the terms "first", "second", etc. are only used for convenience of description and should not be construed as limiting quantity, etc. In addition, the term "connected" may mean "mechanically connected", "electrically connected", or "signal connected", etc., depending on the context.

[0031] The power system of the present invention is primarily designed for large electric blasthole drills, providing hydraulic power to the drill's travel motors. This allows the drill to be moved long distances even when the power source is lost (e.g., if the electric drill is disconnected from the power source or if the drill's engine or hydraulic components malfunction). The drill rig 100 is equipped with a first travel motor 101, a second travel motor 102, a drill multi-way valve 103, and several drill auxiliary actuators 104. The first and second travel motors 101, 102 are used to provide hydraulic power to the drill's crawler tracks. The drill multi-way valve 103 is primarily used to control the drill's hydraulic system, controlling how the drill's hydraulic oil circuits operate. The drill auxiliary actuators 104, including the outrigger mechanism on the drill rig 100, are composed of several hydraulic motors and hydraulic cylinders.

[0032] Figure 1 shows a system block diagram of a power system in an embodiment of the present invention, and Figure 2 shows a connection block diagram of a control system in an embodiment of the present invention. As shown in Figures 1 and 2, the power system includes a first main pump 201, a second main pump 202, an auxiliary pump 203, a first switching unit 204, a first logic unit 205, a second logic unit 206 and a control system 207; wherein, the auxiliary pump 203 is connected to the first switching unit 204; the first travel motor 101 is connected to the first logic unit 205, and the second travel motor 102 is connected to the second logic unit 206; the control system 207 is connected to the first switching unit 204, the first main pump 201, the second main pump 202 and the auxiliary pump 203. When providing hydraulic power for the drilling rig 100, the first main pump 201 is connected to the first logic unit 205, and the second main pump 202 is connected to the second logic unit 206. The first switching unit 204 controls the first logic unit 205 and the second logic unit 206 respectively to disconnect the hydraulic oil circuit of the drilling rig 100 itself from the first travel motor 101 and the second travel motor 102, and connect the oil circuit from the first main pump 201 to the first travel motor 101 and the oil circuit from the second main pump 202 to the second travel motor 102. The first main pump is used to drive the first travel motor 101 to work, and the second main pump 202 is used to drive the second travel motor 102 to work.

[0033] When the drilling rig needs to be moved, after the power system in the embodiment of the present invention is connected to the drilling rig, the control system controls the first main pump 201, the second main pump 202 and the auxiliary pump 203 to work, and at the same time, controls the first switching unit 204 to perform switching control, and connects the oil circuit from the auxiliary pump 203 to the first logic unit 205 and the second logic unit 206. After the hydraulic oil output by the auxiliary pump reaches the first logic unit 205 and the second logic unit 206, the first logic unit 205 is controlled to connect the first drilling rig main oil circuit 105 on the drilling rig with the second main oil circuit 106. The first travel motor 101 is disconnected, and at the same time, the oil circuit from the first main pump 201 to the first travel motor 101 is controlled to be connected, and the hydraulic oil output by the first main pump 201 enters the first travel motor, driving the first travel motor 101 to work; similarly, the second logic unit 206 is controlled to disconnect the second drilling rig main oil circuit 106 from the second travel motor 102 on the drilling rig, and at the same time, the oil circuit from the second main pump 202 to the second travel motor 102 is controlled to be connected, and the hydraulic oil output by the second main pump 202 enters the second travel motor, driving the second travel motor 102 to work. Therefore, the power system provided by the present invention is used to provide hydraulic power for the transfer of the drilling rig, which saves time and effort, and because there is no need to change the position of the cable connection point and repeatedly connect the cables, the operating efficiency is greatly improved and the risk is reduced. In addition, because the present invention uses hydraulic power, it is low in cost compared to electricity.

[0034] In the embodiment of the present invention, the first switching unit 204 includes a logic switching solenoid valve 2041, which is a two-position, three-way solenoid directional valve. As shown in FIG3 , port A of the logic switching solenoid valve 2041 is connected to the auxiliary pump 203, and port P is connected to the first logic unit 205 and the second logic unit 206. When port A is connected to port P, the first switching unit 204 is in the open state; when port A is connected to port T, the first switching unit 204 is in the closed state. The control system 207 controls the switching of the logic switching solenoid valve 2041, thereby controlling whether the hydraulic oil output by the auxiliary pump 203 can enter the first logic unit 205 and the second logic unit 206 through the first switching unit 204.

[0035] In the embodiment of the present invention, the first logic unit 205 and the second logic unit 206 are logic valves, and logic valves available on the market can achieve corresponding functions.

[0036] Furthermore, in an embodiment of the present invention, the power system provided can not only provide hydraulic power for the transfer of the drilling rig, but also provide temporary hydraulic power for the drilling rig in the event of an emergency, such as a power outage, motor failure, engine failure, etc., to provide rescue for the drilling rig. The power system provides hydraulic power to the drilling rig auxiliary actuator 104 of the drilling rig, so that emergency rescue of the drilling rig can be carried out in the event of an emergency. Therefore, in order to achieve the purpose of rescue, in an embodiment of the present invention, the power system also includes a rescue pump 208, a second switching unit 209 and a third logic unit 210, wherein the rescue pump 208 is connected to the second switching unit 209, and the rescue pump 208 and the second switching unit 209 are both connected to the control system 207, and the third logic unit 210 is connected to the drilling rig multi-way valve 103. When providing rescue hydraulic power to the drilling rig 100, the second switching unit 209 is connected to the third logic unit 210.

[0037] When it is necessary to provide rescue hydraulic power for the drilling rig, after the power system is connected to the drilling rig, the auxiliary pump 203 is controlled to work through the control system 207, and the second switching unit 209 is controlled to switch the oil circuit, so that the hydraulic oil output by the auxiliary pump enters the third logic unit 210, and then the hydraulic oil circuit from the auxiliary pump 203 to the drilling rig multi-way valve 103 is controlled by the third logic unit 210 to be connected, and then the hydraulic oil enters the drilling rig auxiliary actuator 104 through the drilling rig multi-way valve 103, driving the drilling rig auxiliary actuator 104 to work, thereby providing rescue for the drilling rig.

[0038] Because the power system will inevitably generate heat during operation, causing the oil temperature of the hydraulic oil to rise, in an embodiment of the present invention, the power system is also connected in sequence to a fan pump 211, a fan motor 212 and a radiator 213, wherein the radiator 213 is connected to the third logic unit 210.

[0039] When the power system does not need to provide external hydraulic power, the hydraulic oil is cooled. During the heat dissipation process, the hydraulic oil can be cooled through two oil circuits. One circuit is that the fan pump 211 sucks the hydraulic oil from the hydraulic oil tank 215, and then outputs it to the fan motor 212 to work. The fan motor 212 will drive the fan motor to operate for rapid heat dissipation. The hydraulic oil then enters the radiator 213 for heat dissipation and returns to the hydraulic oil tank 215. The other circuit is that the auxiliary pump 203 sucks oil from the hydraulic oil tank 215 and outputs it, passing through the second switching unit 209 and the third logic unit 210 to enter the radiator 213, and then flows into the hydraulic oil tank 215 after heat dissipation. Therefore, the power system of the present invention has a better heat dissipation effect through two-way heat dissipation, avoiding damage to the system caused by heat.

[0040] In an embodiment of the present invention, the third logic unit 210 adopts a logic valve. The second switching unit 209 is shown in Figure 4 and includes a first reversing valve 2091, a second reversing valve 2092 and a pilot oil source 2093, wherein the first reversing valve 2091 is a two-position three-way hydraulically controlled reversing valve, and the second reversing valve 2092 is an electromagnetic reversing valve; the A port of the first reversing valve 2091 is connected to the auxiliary pump 203, and the P port is connected to the drilling rig multi-way valve 103; the A port of the second reversing valve 2092 is connected to the valve core of the first reversing valve 2091, and the P port is connected to the pilot oil source 2093; when the A port of the second reversing valve 2092 is connected to the P port and the A port of the first reversing valve 2091 is connected to the P port, the second switching unit 209 is in the open state, and when the T port is connected to the A port, the second switching unit 209 is in the closed state.

[0041] The power system in the above embodiment includes three working modes, namely walking mode, rescue mode and standby mode. In the walking mode, the power system drives the first walking motor 101 and the second walking motor 102 to work, providing walking power for the drilling rig 100; in the rescue mode, the power system provides power for the drilling rig auxiliary actuator of the drilling rig 100; in the standby mode, the power system does not output hydraulic power to the outside.

[0042] When the power system is in walking mode, the first switching unit 204 is turned on, the second switching unit 209 is turned off, the first logic unit 205 and the second logic unit 206 are actuated to cut off the oil circuit between the hydraulic system of the drilling rig and the first walking motor 101 and the second walking motor 102, and to connect the oil circuit between the first main pump 201 and the first walking motor 101, and the oil circuit between the second main pump 202 and the second walking motor 102, so that the power system provides walking power for the drilling rig 100. When the power system is in rescue mode, the first switching unit 204 is closed, the second switching unit 209 is opened, the first logic unit 205 and the second logic unit 206 are inactive, the third logic unit 210 is active, the oil circuit between the rescue pump 208 and the drilling rig multi-way valve 103 is connected, and the power system provides rescue hydraulic power to the drilling rig auxiliary actuator 104 of the drilling rig 100; when the power system is in standby mode, the first switching unit 204 and the second switching unit 209 are closed, the first logic unit 205, the second logic unit 206 and the third logic unit 210 are inactive, the fan pump 211 is active, driving the fan motor 212 to operate and cool the hydraulic oil.

[0043] Therefore, by utilizing the power system proposed in the embodiment of the present invention, by switching among the three modes, the transfer of the drilling rig and emergency rescue can not only save time and labor, but also reduce risks and costs.

[0044] In an embodiment of the present invention, the control system 207 includes an operating element 2071 , a display element 2072 and a control element 2073 , wherein the control element 2073 is connected to the first switching unit 204 and the second switching unit 209 , wherein the display element 2072 and the operating element 2071 are both connected to the control element 2073 .

[0045] The control element 2073 uses an existing controller, such as a PLC or a control card, and the display element 2072 uses a display. If the display element 2072 uses a touch screen or a display with buttons, then at this time, the display element 2072 can also serve as the operating element 2071, that is, the display element 2072 and the operating element 2071 are an integrated device.

[0046] Alternatively, if the display unit 2072 is an integrated display and control unit, then the operating unit 2071, the display unit 2072, and the control unit 2073 are an integrated device. In one embodiment of the present invention, the operating unit 2071 is a wireless handle that can communicate with the control unit 2073 wirelessly, for example, via Bluetooth, Wi-Fi, or Zigbee. This allows for remote control of the system when providing hydraulic power to the drilling rig, making operation more convenient.

[0047] Furthermore, in an embodiment of the present invention, in order to facilitate the connection of the power system to the drilling rig, the system also includes an approach device 214. The approach device 214 adopts an electric winch. The approach device is connected to the control system 207. When hydraulic power needs to be provided to the drilling rig, the approach device can be used to first shorten the distance between the power system and the drilling rig, so as to facilitate the alignment of the drilling rig and facilitate connection, thereby reducing manpower.

[0048] In an embodiment of the present invention, a travel power station is also provided, which includes the power system provided in the above-mentioned embodiment. Specifically, the travel power station is designed as a vehicle, including a frame, wheels, etc., and the power system in the embodiment of the present invention is then installed on the frame. In this way, when using the travel power station to provide hydraulic power to a drilling rig, the travel power station can be directly pulled near the drilling rig, and then the drilling rig and the travel power station can be pulled close to each other and aligned using the approach device 214. The travel power station is then connected to the drilling rig, and the travel power station can then be used to provide hydraulic power to the drilling rig for transfer or emergency rescue. This is not only convenient, but also reduces risks and costs.

[0049] The present invention has been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0050] The description of the present invention has been presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as are suited for specific applications.

Claims

1. A power system for providing hydraulic power to a drilling rig (100), wherein the drilling rig (100) is provided with a first travel motor (101), a second travel motor (102), a drilling rig multi-way valve (103) and a plurality of drilling rig auxiliary actuators (104), characterized in that: The power system comprises: a first main pump (201), a second main pump (202), an auxiliary pump (203), a first switching unit (204), a first logic unit (205), a second logic unit (206), and a control system (207); the auxiliary pump (203) is connected to the first switching unit (204); the first travel motor (101) is connected to the first logic unit (205), and the second travel motor (102) is connected to the second logic unit (206); the control system (207) is connected to the first switching unit (204), the first main pump (201), the second main pump (202), and the auxiliary pump (203); When providing hydraulic power for the drilling rig (100), the first main pump (201) is connected to the first logic unit (205), and the second main pump (202) is connected to the second logic unit (206). The first switching unit (204) controls the first logic unit (205) and the second logic unit (206) to disconnect the hydraulic oil circuit of the drilling rig (100) from the first travel motor (101) and the second travel motor (102), connect the oil circuit from the first main pump (201) to the first travel motor (101) and the oil circuit from the second main pump (202) to the second travel motor (102), and use the first main pump to drive the first travel motor (101) to work, and use the second main pump (202) to drive the second travel motor (102) to work.

2. The power system according to claim 1, characterized in that: The power system further comprises a rescue pump (208), a second switching unit (209) and a third logic unit (210), wherein the rescue pump (208) is connected to the second switching unit (209), and both the rescue pump (208) and the second switching unit (209) are connected to the control system (207), and the third logic unit (210) is connected to the drilling rig multi-way valve (103). When providing rescue hydraulic power to the drilling rig (100), the second switching unit (209) is connected to the third logic unit (210).

3. The power system according to claim 2, characterized in that: The power system further comprises a fan pump (211), a fan motor (212) and a radiator (213) connected in sequence, and the radiator (213) is connected to the third logic unit (210).

4. The power system according to claim 3, characterized in that: The power system includes three working modes, namely walking mode, rescue mode and standby mode. In the walking mode, the power system drives the first walking motor (101) and the second walking motor (102) to work, providing walking power for the drilling rig (100); In the rescue mode, the power system provides power to the drilling rig auxiliary actuator (104) of the drilling rig (100); In the standby mode, the power system does not output hydraulic power to the outside.

5. The power system according to claim 4, characterized in that: When the power system is in the walking mode, the first switching unit (204) is turned on, the second switching unit (209) is turned off, the first logic unit (205) and the second logic unit (206) are actuated to cut off the oil circuits of the hydraulic system of the drilling rig (100) and the first walking motor (101) and the second walking motor (102), and to connect the oil circuit between the first main pump (201) and the first walking motor (101), and the oil circuit between the second main pump (202) and the second walking motor (102), so that the power system provides walking power for the drilling rig (100); When the power system is in rescue mode, the first switching unit (204) is closed, the second switching unit (209) is opened, the first logic unit (205) and the second logic unit (206) are inactive, the third logic unit (210) is active, the oil circuit between the rescue pump (208) and the drilling rig multi-way valve (103) is connected, and the power system provides rescue hydraulic power to the drilling rig auxiliary actuator (104) of the drilling rig (100); When the power system is in standby mode, the first switching unit (204) and the second switching unit (209) are both closed, the first logic unit (205), the second logic unit (206) and the third logic unit (210) are all inactive, the fan pump (211) operates, and drives the fan motor (212) to operate, thereby cooling the hydraulic oil.

6. The power system according to claim 5, characterized in that: The first switching unit (204) includes a logic switching solenoid valve 2041, which is a two-position three-way solenoid reversing valve. The A port of the logic switching solenoid valve 2041 is connected to the auxiliary pump (203), and the P port is connected to the first logic unit (205) and the second logic unit (206). When the A port and the P port are connected, the first switching unit (204) is in an open state.

7. The power system according to claim 5, characterized in that: The second switching unit (209) comprises a first reversing valve (2091), a second reversing valve (2092) and a pilot oil source (2093); the first reversing valve (2091) is a two-position three-way hydraulically controlled reversing valve, and the second reversing valve (2092) is an electromagnetic reversing valve; the A port of the first reversing valve (2091) is connected to the auxiliary pump (203), and the P port is connected to the drilling rig multi-way valve (103); the A port of the second reversing valve (2092) is connected to the valve core of the first reversing valve (2091), and the P port is connected to the pilot oil source (2093); When the port A of the second reversing valve (2092) is connected to the port P, and the port A of the first reversing valve (2091) is connected to the port P, the second switching unit (209) is in an open state.

8. The power system according to any one of claims 1 to 7, characterized in that: The control system (207) includes an operating element (2071), a display element (2072) and a control element (2073), wherein the control element (2073) is connected to the first switching unit (204) and the second switching unit (209), and the display element (2072) and the operating unit are both connected to the control element (2073).

9. The power system according to claim 8, characterized in that: The operating element (2071) is a wireless handle, and the wireless handle is wirelessly connected to the control element (2073).

10. The power system according to claim 9, characterized in that: The power system further includes an access device (214), and the access device (214) is connected to the control system (207).

11. A walking power station, characterized in that: A power system comprising any one of claims 1-10.

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