Bolter digger pump station control system, bolter digger

Abstract

The present invention discloses a control system for a bolter miner pump station and a bolter miner. In this system, when the bolter miner switches to travel mode, a controller controls the oil pump control valve group to open the oil supply circuit connecting the plunger pump group to the travel hydraulic system and disconnect the oil supply circuit connecting the plunger pump group to the cutting / anchoring hydraulic system. Conversely, when the bolter miner switches to anchoring mode, the controller controls the oil pump control valve group to open the oil supply circuit connecting the plunger pump group to the cutting / anchoring hydraulic system and disconnect the oil supply circuit connecting the plunger pump group to the travel hydraulic system. By adopting an electro-hydraulic proportional control system, an operator can quickly switch between the bolter miner's travel mode and anchoring mode simply by operating a remote control, significantly reducing the operator's workload and significantly improving the bolter miner's operating efficiency. Furthermore, by issuing different control signals, the travel hydraulic system and the cutting / anchoring hydraulic system can be fully interlocked, thereby improving reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor miners, and in particular to a control system of an anchor miner pump station. In addition, the present invention also particularly relates to an anchor miner using the control system. Background Art

[0002] The entire bolter miner operation process involves several steps: First, the machine moves to the working position, with both its cutting and anchoring systems operating simultaneously. The machine then moves to the next working position, completing one cycle and then entering the next. The power source for the bolter miner's movement, cutting, and anchoring is a hydraulic pump. The miner's hydraulic system consists of a triple-piston pump station, a travel hydraulic system, and a cutting / anchoring hydraulic system. In travel mode, only the travel system is operational, while the cutting / anchoring systems are disabled, protecting the operator and the working mechanism from damage. In working mode, only the cutting / anchoring systems are enabled simultaneously, while the travel system is disabled. This prevents damage to the excavation and cutting components and operator injury due to misoperation during anchoring operations.

[0003] Currently, the interlocking functions between the travel, cutting, and anchoring hydraulic systems of anchor miners are switched solely using manual three-way ball valves. This means that switching the hydraulic circuits of the corresponding actuators requires manual judgment and switching. For example, patent CN111637108A discloses a safe and reliable interlocking hydraulic system for anchor miners. This system employs a three-way ball valve between the anchoring and excavation hydraulic systems. By switching the three-way ball valves, the oil supply is controlled. This allows only one of the two operations to be performed during operation, effectively protecting the operator from accidents caused by misoperation. This effectively prevents damage to the anchoring and excavation components caused by misoperation during excavation and cutting. However, due to the high speed of anchor miners, operators are required to frequently operate the manual three-way ball valve, significantly impacting the actual operating efficiency of the anchor miner. Furthermore, the high operating force required by the ball valve increases the operator's workload. Summary of the Invention

[0004] The present invention provides a control system for an anchor miner pump station and an anchor miner, so as to solve the technical problems of low construction efficiency and high work intensity in the existing method of using a manually switched three-way ball valve to realize interlocking between a traveling hydraulic system and a cutting / anchoring hydraulic system.

[0005] According to one aspect of the present invention, a control system of an anchor mining machine pump station is provided, including a hydraulic oil tank, a plunger pump group, an oil pump control valve group, a cutting / anchoring hydraulic system, a traveling hydraulic system and a controller, wherein the hydraulic oil tank is used to store hydraulic oil, the plunger pump group is used to provide high-pressure hydraulic oil, the cutting / anchoring hydraulic system is used to provide pressure oil to the cutting / anchoring actuator in the anchoring mode, and the traveling hydraulic system is used to provide pressure oil to the traveling actuator in the traveling mode. The oil pump control valve group is arranged on the oil circuit connecting the plunger pump group and the cutting / anchoring hydraulic system and the traveling hydraulic system, and is used to control the on-off of the two oil circuits. The controller is electrically connected to the oil pump control valve group, and the controller controls the working state of the oil pump control valve group to provide pressure oil to the corresponding actuators in different operating modes.

[0006] Furthermore, the oil pump control valve group includes a first solenoid reversing valve, a first hydraulically controlled logic reversing valve, a second solenoid reversing valve and a second hydraulically controlled logic reversing valve. The first solenoid reversing valve is used to control the first hydraulically controlled logic reversing valve for reversing, and the second solenoid reversing valve is used to control the second hydraulically controlled logic reversing valve for reversing. The first hydraulically controlled logic reversing valve is arranged on the main oil circuit connecting the plunger pump group and the cutting / anchoring hydraulic system, and the second hydraulically controlled logic reversing valve is arranged on the main oil circuit connecting the plunger pump group and the walking hydraulic system. The first solenoid reversing valve and the second solenoid reversing valve are both electrically connected to the controller, and the controller controls the on and off of the two main oil circuits by controlling the power on and off states of the first solenoid reversing valve and the second solenoid reversing valve.

[0007] Furthermore, the P ports of the first solenoid reversing valve and the second solenoid reversing valve, and the inlets of the first hydraulically controlled logic reversing valve and the second hydraulically controlled logic reversing valve are all connected to the plunger pump group, and the outlets of the first hydraulically controlled logic reversing valve and the second hydraulically controlled logic reversing valve are respectively connected to the cutting / anchoring hydraulic system and the walking hydraulic system, the A port of the first solenoid reversing valve is connected to the left pilot port of the first hydraulically controlled logic reversing valve, and the right lower pilot port of the first hydraulically controlled logic reversing valve is connected to its inlet, the A port of the second solenoid reversing valve is connected to the right pilot port of the second hydraulically controlled logic reversing valve, and the left lower pilot port of the second hydraulically controlled logic reversing valve is connected to its inlet, the B ports of the first solenoid reversing valve and the second solenoid reversing valve are blocked, and the T ports are connected to the hydraulic oil tank.

[0008] Furthermore, in standby mode, the controller controls the first solenoid reversing valve and the second solenoid reversing valve to lose power, the first solenoid reversing valve and the first hydraulically controlled logic reversing valve are in the left position, the second solenoid reversing valve and the second hydraulically controlled logic reversing valve are in the right position, and the main oil circuits between the plunger pump group and the cutting / anchoring hydraulic system and the walking hydraulic system are disconnected.

[0009] Furthermore, in the anchor protection mode, the controller controls the first solenoid reversing valve to be energized and the second solenoid reversing valve to be de-energized, and the first solenoid reversing valve and the first hydraulically controlled logic reversing valve are switched to the right position. At this time, the main oil circuit between the plunger pump group and the cutting / anchor protection hydraulic system is connected, and the main oil circuit between the plunger pump group and the walking hydraulic system remains disconnected.

[0010] Furthermore, in the walking mode, the controller controls the second solenoid reversing valve to be energized and the first solenoid reversing valve to be de-energized, and the second solenoid reversing valve and the second hydraulically controlled logic reversing valve are switched to the left position. At this time, the main oil circuit between the plunger pump group and the walking hydraulic system is connected, and the main oil circuit between the plunger pump group and the cutting / anchoring hydraulic system remains disconnected.

[0011] Furthermore, the first electromagnetic reversing valve and the second electromagnetic reversing valve are any one of a two-position four-way electromagnetic reversing valve, a two-position three-way electromagnetic reversing valve, a three-position four-way electromagnetic reversing valve and a three-position three-way electromagnetic reversing valve.

[0012] Furthermore, the plunger pump group includes a first hydraulic plunger pump and a second hydraulic plunger pump, the first hydraulic plunger pump is used to provide high-pressure hydraulic oil to the cutting / anchoring hydraulic system, and the second hydraulic plunger pump is used to provide high-pressure hydraulic oil to the traveling hydraulic system.

[0013] Furthermore, it also includes an auxiliary hydraulic system for providing pressure oil to the auxiliary actuator of the anchor miner, and the auxiliary hydraulic system is connected to the second hydraulic plunger pump.

[0014] In addition, the present invention also provides an anchor miner, which adopts the control system of the anchor miner pump station as described above.

[0015] The present invention has the following effects:

[0016] The control system of the anchor miner pump station of the present invention employs an oil pump control valve assembly installed in the oil circuits connecting the plunger pump assembly to the cutting / anchoring hydraulic system and the travel hydraulic system, respectively. The oil pump control valve assembly controls the on / off state of the two oil supply circuits. This allows pressure oil to be supplied to the corresponding actuators in different operating modes simply by controlling the operating state of the oil pump control valve assembly via a controller. When the anchor miner switches to travel mode, the controller controls the oil pump control valve assembly to open the oil supply circuit connecting the plunger pump assembly to the travel hydraulic system and disconnect the oil supply circuit connecting the plunger pump assembly to the cutting / anchoring hydraulic system. Conversely, when the anchor miner switches to anchoring mode, the controller controls the oil pump control valve assembly to open the oil supply circuit connecting the plunger pump assembly to the cutting / anchoring hydraulic system and disconnect the oil supply circuit connecting the plunger pump assembly to the travel hydraulic system. The present invention adopts an electro-hydraulic proportional control system, so the operator can quickly switch between the travel module and the anchoring mode of the anchor miner only by operating the remote control, which greatly reduces the operator's labor intensity and greatly improves the construction efficiency of the anchor miner. In addition, by issuing different control signals, the travel hydraulic system and the cutting / anchoring hydraulic system can be fully interlocked, thereby improving reliability.

[0017] In addition, the bolter miner of the present invention also has the above advantages.

[0018] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the hydraulic principle of the control system of the anchor miner pump station according to the preferred embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the hydraulic principle of the oil pump control valve group in a preferred embodiment of the present invention.

[0022] Description of Reference Numerals

[0023] 1. Hydraulic oil tank; 2. Plunger pump group; 3. Oil pump control valve group; 4. Cutting / anchoring hydraulic system; 5. Travel hydraulic system; 6. Auxiliary hydraulic system; 31. First solenoid reversing valve; 32. First hydraulic-controlled logic reversing valve; 33. Second solenoid reversing valve; 34. Second hydraulic-controlled logic reversing valve; 21. First hydraulic plunger pump; 22. Second hydraulic plunger pump; 23. Third hydraulic plunger pump. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0025] like Figure 1 and Figure 2 As shown, a preferred embodiment of the present invention provides a control system for an anchor miner pump station, including a hydraulic oil tank 1, a plunger pump group 2, an oil pump control valve group 3, a cutting / anchoring hydraulic system 4, a traveling hydraulic system 5 and a controller. The hydraulic oil tank 1 is used to store hydraulic oil and provide an installation position for accessories in the hydraulic transmission system. The plunger pump group 2 is used to provide high-pressure hydraulic oil. The cutting / anchoring hydraulic system 4 is used to provide pressure oil to the cutting / anchoring actuator in the anchoring mode. The traveling hydraulic system 5 is used to provide pressure oil to the traveling actuator in the traveling mode. The oil pump control valve group 3 is arranged on the oil circuit connecting the plunger pump group 2 and the cutting / anchoring hydraulic system 4 and the traveling hydraulic system 5, and is used to control the on-off of the two oil circuits. The controller is electrically connected to the oil pump control valve group 3. The controller controls the working state of the oil pump control valve group 3 to provide pressure oil to the corresponding actuators in different operating modes.

[0026] As can be understood, the control system of the anchor miner pump station of this embodiment employs an oil pump control valve assembly 3 disposed on the oil circuits connecting the plunger pump assembly 2 to the cutting / anchoring hydraulic system 4 and the travel hydraulic system 5, respectively. This oil pump control valve assembly 3 controls the on / off state of these two oil supply circuits. Simply by controlling the operating state of the oil pump control valve assembly 3 via a controller, pressurized oil can be supplied to the corresponding actuators in different operating modes. When the anchor miner switches to travel mode, the controller controls the oil pump control valve assembly 3 to open the oil supply circuit connecting the plunger pump assembly 2 to the travel hydraulic system 5 and disconnect the oil supply circuit connecting the plunger pump assembly 2 to the cutting / anchoring hydraulic system 4. Conversely, when the anchor miner switches to anchoring mode, the controller controls the oil pump control valve assembly 3 to open the oil supply circuit connecting the plunger pump assembly 2 to the cutting / anchoring hydraulic system 4 and disconnect the oil supply circuit connecting the plunger pump assembly 2 to the travel hydraulic system 5. The present invention adopts an electro-hydraulic proportional control system, so the operator can quickly switch between the travel mode and the anchoring mode of the anchor miner only by operating the remote control, which greatly reduces the operator's labor intensity and greatly improves the construction efficiency of the anchor miner. In addition, by issuing different control signals, the travel hydraulic system 5 and the cutting / anchoring hydraulic system 4 can be fully interlocked, thereby improving reliability.

[0027] It will be appreciated that the plunger pump assembly 2 includes a first hydraulic plunger pump 21 and a second hydraulic plunger pump 22. The first hydraulic plunger pump 21 is used to provide high-pressure hydraulic oil to the cutting / anchoring hydraulic system 4, and the second hydraulic plunger pump 22 is used to provide high-pressure hydraulic oil to the traveling hydraulic system 5. The plunger pumps can also control the output flow of the hydraulic plunger pumps according to operator instructions to achieve energy conservation. Of course, in other embodiments of the present invention, the plunger pump assembly 2 uses only a single hydraulic plunger pump to provide high-pressure hydraulic oil to both the cutting / anchoring hydraulic system 4 and the traveling hydraulic system 5. Optionally, the plunger pump assembly 2 also includes a third hydraulic plunger pump 23 as a backup power source. In addition, the cutting / anchoring hydraulic system 4 is connected to the load-sensing feedback port of the first hydraulic plunger pump 21, and the traveling hydraulic system 5 is connected to the load-sensing feedback port of the second hydraulic plunger pump 22, thereby achieving load-sensing adjustment of the plunger pumps.

[0028] Optionally, the control system further includes an auxiliary hydraulic system 6 for providing pressurized oil to the auxiliary actuators of the anchor miner. The auxiliary hydraulic system 6 is connected to the second hydraulic piston pump 22. In other embodiments of the present invention, the auxiliary hydraulic system 6 may also be connected to the first hydraulic piston pump 21 or the third hydraulic piston pump 23.

[0029] It can be understood that the oil pump control valve group 3 includes a first solenoid reversing valve 31, a first hydraulically controlled logic reversing valve 32, a second solenoid reversing valve 33 and a second hydraulically controlled logic reversing valve 34. The first solenoid reversing valve 31 is used to control the first hydraulically controlled logic reversing valve 32 for reversing, and the second solenoid reversing valve 33 is used to control the second hydraulically controlled logic reversing valve 34 for reversing. The first hydraulically controlled logic reversing valve 32 is arranged on the main oil circuit connecting the plunger pump group 2 and the cutting / anchoring hydraulic system 4, and the second hydraulically controlled logic reversing valve 34 is arranged on the main oil circuit connecting the plunger pump group 2 and the walking hydraulic system 5. The first solenoid reversing valve 31 and the second solenoid reversing valve 33 are both electrically connected to the controller, and the controller controls the on / off state of the two main oil circuits by controlling the power-on and off states of the first solenoid reversing valve 31 and the second solenoid reversing valve 33. The first solenoid reversing valve 31 and the second solenoid reversing valve 33 are any of a two-position four-way solenoid reversing valve, a two-position three-way solenoid reversing valve, a three-position four-way solenoid reversing valve, or a three-position three-way solenoid reversing valve, preferably a two-position four-way solenoid reversing valve. Furthermore, the oil pump control valve assembly 3 is a threaded cartridge valve manifold, which is compact and can be directly connected to the main pump outlet, simplifying piping layout and facilitating maintenance.

[0030] It can be understood that the P port of the first solenoid reversing valve 31 and the second solenoid reversing valve 33, and the inlet of the first hydraulically controlled logic reversing valve 32 and the second hydraulically controlled logic reversing valve 34 are all connected to the plunger pump group 2, and the outlets of the first hydraulically controlled logic reversing valve 32 and the second hydraulically controlled logic reversing valve 34 are respectively connected to the cutting / anchoring hydraulic system 4 and the walking hydraulic system 5, the A port of the first solenoid reversing valve 31 is connected to the left pilot port of the first hydraulically controlled logic reversing valve 32, and the right lower pilot port of the first hydraulically controlled logic reversing valve 32 is connected to its inlet, the A port of the second solenoid reversing valve 33 is connected to the right pilot port of the second hydraulically controlled logic reversing valve 34, and the left lower pilot port of the second hydraulically controlled logic reversing valve 34 is connected to its inlet, the B port of the first solenoid reversing valve 31 and the second solenoid reversing valve 33 are blocked, and the T port is connected to the hydraulic oil tank 1. In addition, the upper right pilot port of the first hydraulically controlled logic reversing valve 32 is also connected to its outlet, and the upper left pilot port of the second hydraulically controlled logic reversing valve 34 is also connected to its outlet.

[0031] Specifically, the oil pump control valve assembly 3 has an oil inlet P3, an oil inlet P1, an oil outlet P33, and an oil outlet P13. The oil inlet P3 is connected to the first hydraulic piston pump 21, the oil inlet P1 is connected to the second hydraulic piston pump 22, the oil outlet P33 is connected to the cutting / anchoring hydraulic system 4, and the oil outlet P13 is connected to the traveling hydraulic system 5. A first hydraulically controlled logic reversing valve 32 is provided between the oil inlet P3 and the oil outlet P33 to control the on-off of this oil circuit. A second hydraulically controlled logic reversing valve 34 is provided between the oil inlet P1 and the oil outlet P13 to control the on-off of this oil circuit. The P port of the first solenoid reversing valve 31 and the inlet of the first hydraulically controlled logic reversing valve 32 are both connected to the oil inlet P3, while the P port of the second solenoid reversing valve 33 and the inlet of the second hydraulically controlled logic reversing valve 34 are both connected to the oil inlet P1. The outlet of the first hydraulically controlled logic reversing valve 32 is connected to the oil outlet P33 , and the outlet of the second hydraulically controlled logic reversing valve 34 is connected to the oil outlet P13 .

[0032] It can be understood that in standby mode, the controller controls the first solenoid reversing valve 31 and the second solenoid reversing valve 33 to lose power, the first solenoid reversing valve 31 and the first hydraulically controlled logic reversing valve 32 are in the left position, the second solenoid reversing valve 33 and the second hydraulically controlled logic reversing valve 34 are in the right position, and the main oil circuits between the plunger pump group 2 and the cutting / anchoring hydraulic system 4 and the walking hydraulic system 5 are disconnected.

[0033] Specifically, when the anchor miner motor is started and is in standby mode, each actuator is in the middle position, and no feedback signal enters the load-sensitive feedback port corresponding to the first plunger pump 21 and the second plunger pump 22. The first plunger pump 21 and the second plunger pump 22 are both in a low-pressure standby state. The oil flows from the A port of the first plunger pump 21 to the P3 port of the oil pump control valve group 3. After the oil enters the valve body through the P3 port, it flows all the way through the P port and the A port of the first solenoid reversing valve 31 to the left pilot control port of the first hydraulic control logic reversing valve 32 (control spring Spring side), and acts on this pilot port, while the other path flows to the inlet of the first hydraulically controlled logic reversing valve 32, and acts on the right lower pilot port of the first hydraulically controlled logic reversing valve 32 at the same time, and acts here. Since the effective area of the left pilot control port (control spring side) of the first hydraulically controlled logic reversing valve 32 is larger than the right lower pilot port, the first hydraulically controlled logic reversing valve 32 is maintained in the left position under the joint action of hydraulic pressure and spring force, and the P3 port and P33 port of the oil pump control valve group 3 are disconnected, and the oil cannot reach the cutting / anchoring hydraulic system 4. The oil also flows from the A port of the second plunger pump 22 to the P1 port of the oil pump control valve group 3. After the oil enters the valve body through the P1 port, it flows through the P port and the A port of the second solenoid reversing valve 33 to the right pilot control port (control spring side) of the second hydraulically controlled logic reversing valve 34 and acts on this pilot port. The other way flows to the inlet of the second hydraulically controlled logic reversing valve 34 and acts on the left lower pilot port of the second hydraulically controlled logic reversing valve 34 at the same time. Since the effective area of the right pilot control port (control spring side) of the second hydraulically controlled logic reversing valve 34 is larger than the left lower pilot port, the second hydraulically controlled logic reversing valve 34 is maintained in the right position under the joint action of the hydraulic pressure and the spring force, and the P1 port and the P13 port of the oil pump control valve group 3 are disconnected, and the oil cannot reach the travel hydraulic system 5.

[0034] It can be understood that in the anchor protection mode, the controller controls the first solenoid reversing valve 31 to be energized and the second solenoid reversing valve 33 to be de-energized, and the first solenoid reversing valve 31 and the first hydraulically controlled logic reversing valve 32 are switched to the right position. At this time, the main oil circuit between the plunger pump group 2 and the cutting / anchor protection hydraulic system 4 is connected, and the main oil circuit between the plunger pump group 2 and the walking hydraulic system 5 remains disconnected.

[0035] Specifically, when the anchor miner switches the whole machine working mode to the anchor protection mode, the first solenoid reversing valve 31 is in the energized state, and the first solenoid reversing valve 33 is in the de-energized state. The first solenoid reversing valve 31 will switch to the right position under the action of electromagnetic force, and the pressure oil of the left pilot control port (control spring side) of the first hydraulically controlled logic reversing valve 32 will return to the oil tank through the A port and T port of the first hydraulically controlled logic reversing valve 31. The acting pressure of the left pilot control port (control spring side) of the first hydraulically controlled logic reversing valve 32 disappears, and the oil in the main oil circuit P3 port flows all the way to the P port of the first solenoid reversing valve 31 and reaches the B port, but the B port of the first solenoid reversing valve 31 is blocked, and the oil flow stops here. At this point, another oil path flows to the inlet of the first hydraulically controlled logic reversing valve 32. Simultaneously, this oil path acts on the right lower pilot port of the first hydraulically controlled logic reversing valve 32 through the pilot oil path. Since the left return spring force of the first hydraulically controlled logic reversing valve 31 is weak, the pressure acting on the right lower pilot port of the first hydraulically controlled logic reversing valve 32 pushes the first hydraulically controlled logic reversing valve 32 to the right position. The main oil path flows through the outlet of the first hydraulically controlled logic reversing valve 32 to port P33 of the oil pump control valve assembly 3, and ultimately through the pipeline to the cutting / anchoring hydraulic system 4. At this point, the anchoring and cutting hydraulic systems can operate normally, and the anchor miner can perform anchoring and cutting operations. However, since the second hydraulically controlled logic reversing valve 34 is in the right position, the oil path P1 to P13 of the oil pump control valve assembly 3 is disconnected, thereby locking the travel hydraulic system in the anchoring mode.

[0036] It can be understood that in the walking mode, the controller controls the second solenoid reversing valve 33 to be energized and the first solenoid reversing valve 31 to be de-energized, and the second solenoid reversing valve 33 and the second hydraulically controlled logic reversing valve 34 are switched to the left position. At this time, the main oil circuit between the plunger pump group 2 and the walking hydraulic system 5 is connected, and the main oil circuit between the plunger pump group 2 and the cutting / anchoring hydraulic system 4 remains disconnected.

[0037] Specifically, when the anchor miner switches the working mode of the whole machine to the walking mode, the second solenoid reversing valve 33 is in the energized state and the first solenoid reversing valve 31 is in the de-energized state. The second solenoid reversing valve 33 will switch to the left position under the action of electromagnetic force, and the pressure oil of the right pilot control port (control spring side) of the second hydraulically controlled logic reversing valve 34 will return to the oil tank through the A port and T port of the second solenoid reversing valve 33. The acting pressure of the right pilot control port (control spring side) of the second hydraulically controlled logic reversing valve 34 disappears, and the oil at the P1 port of the main oil circuit flows all the way to the P port of the second solenoid reversing valve 33 and then reaches the B port, but the B port of the second solenoid reversing valve 33 is blocked, and the oil flow stops here. At this point, another oil path flows to the inlet of the second hydraulically controlled logic reversing valve 34. Simultaneously, this oil path acts on the left lower pilot port of the second hydraulically controlled logic reversing valve 34 through the pilot oil path. Since the right return spring force of the second hydraulically controlled logic reversing valve 34 is weak, the pressure acting on the left lower pilot port of the second hydraulically controlled logic reversing valve 34 pushes the second hydraulically controlled logic reversing valve 34 to the left position. The main oil path flows through the outlet of the second hydraulically controlled logic reversing valve 34 to port P13 of the oil pump control valve assembly 3, and finally through the pipeline to the travel hydraulic system 5. At this point, the travel hydraulic system 5 can operate normally, and the anchor miner can travel normally. However, since the first hydraulically controlled logic reversing valve 32 is in the left position, the oil path P3 to P33 of the oil pump control valve assembly 3 is disconnected, thereby locking the cutting / anchoring hydraulic system 4 in the travel mode.

[0038] In addition, another embodiment of the present invention further provides an anchor miner, which preferably adopts the control system of the anchor miner pump station as described above.

[0039] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A control system for an anchor miner pump station, characterized in that: The invention comprises a hydraulic oil tank (1), a plunger pump group (2), an oil pump control valve group (3), a cutting / anchoring hydraulic system (4), a walking hydraulic system (5) and a controller, wherein the hydraulic oil tank (1) is used to store hydraulic oil, the plunger pump group (2) is used to provide high-pressure hydraulic oil, the cutting / anchoring hydraulic system (4) is used to provide pressure oil to the cutting / anchoring actuator in the anchoring mode, and the walking hydraulic system (5) is used to provide pressure oil to the walking actuator in the walking mode. The oil pump control valve group (3) is arranged on the oil circuit connecting the plunger pump group (2) and the cutting / anchoring hydraulic system (4) and the walking hydraulic system (5), and is used to control the on-off of the two oil circuits. The controller is electrically connected to the oil pump control valve group (3), and the controller controls the working state of the oil pump control valve group (3) to provide pressure oil to the corresponding actuator in different operation modes. The oil pump control valve group (3) includes a first electromagnetic reversing valve (31), a first hydraulically controlled logic reversing valve (32), a second electromagnetic reversing valve (33) and a second hydraulically controlled logic reversing valve (34). The first electromagnetic reversing valve (31) is used to control the first hydraulically controlled logic reversing valve (32) to perform reversing. The second electromagnetic reversing valve (33) is used to control the second hydraulically controlled logic reversing valve (34) to perform reversing. The first hydraulically controlled logic reversing valve (32) is arranged on the main oil circuit connecting the plunger pump group (2) and the cutting / anchoring hydraulic system (4). The second hydraulically controlled logic reversing valve (34) is arranged on the main oil circuit connecting the plunger pump group (2) and the walking hydraulic system (5). The first electromagnetic reversing valve (31) and the second electromagnetic reversing valve (33) are both electrically connected to a controller. The controller controls the on / off state of the two main oil circuits by controlling the power-on and power-off states of the first electromagnetic reversing valve (31) and the second electromagnetic reversing valve (33). The P ports of the first electromagnetic reversing valve (31) and the second electromagnetic reversing valve (33), and the inlets of the first hydraulically controlled logic reversing valve (32) and the second hydraulically controlled logic reversing valve (34) are all connected to the plunger pump group (2); the outlets of the first hydraulically controlled logic reversing valve (32) and the second hydraulically controlled logic reversing valve (34) are respectively connected to the cutting / anchoring hydraulic system (4) and the walking hydraulic system (5); the A port of the first electromagnetic reversing valve (31) is connected to the left pilot port of the first hydraulically controlled logic reversing valve (32); the right lower pilot port of the first hydraulically controlled logic reversing valve (32) is connected to its inlet; the A port of the second electromagnetic reversing valve (33) is connected to the right pilot port of the second hydraulically controlled logic reversing valve (34); the left lower pilot port of the second hydraulically controlled logic reversing valve (34) is connected to its inlet; the B ports of the first electromagnetic reversing valve (31) and the second electromagnetic reversing valve (33) are blocked, and the T ports are connected to the hydraulic oil tank (1).

2. The control system of the anchor miner pump station according to claim 1, characterized in that: In the standby mode, the controller controls the first electromagnetic reversing valve (31) and the second electromagnetic reversing valve (33) to lose power, the first electromagnetic reversing valve (31) and the first hydraulically controlled logic reversing valve (32) are in the left position, the second electromagnetic reversing valve (33) and the second hydraulically controlled logic reversing valve (34) are in the right position, and the main oil circuits between the plunger pump group (2) and the cutting / anchoring hydraulic system (4) and the traveling hydraulic system (5) are disconnected.

3. The control system of the anchor miner pump station according to claim 1, characterized in that: In the anchor protection mode, the controller controls the first electromagnetic reversing valve (31) to be energized and the second electromagnetic reversing valve (33) to be de-energized, and the first electromagnetic reversing valve (31) and the first hydraulic control logic reversing valve (32) are switched to the right position. At this time, the main oil circuit between the plunger pump group (2) and the cutting / anchor protection hydraulic system (4) is connected, and the main oil circuit between the plunger pump group (2) and the walking hydraulic system (5) remains disconnected.

4. The control system of the anchor miner pump station according to claim 1, characterized in that: In the walking mode, the controller controls the second electromagnetic reversing valve (33) to be energized and the first electromagnetic reversing valve (31) to be de-energized, and the second electromagnetic reversing valve (33) and the second hydraulic control logic reversing valve (34) are switched to the left position. At this time, the main oil circuit between the plunger pump group (2) and the walking hydraulic system (5) is connected, and the main oil circuit between the plunger pump group (2) and the cutting / anchoring hydraulic system (4) remains disconnected.

5. The control system of the anchor miner pump station according to claim 1, characterized in that: The first electromagnetic reversing valve (31) and the second electromagnetic reversing valve (33) are any one of a two-position four-way electromagnetic reversing valve, a two-position three-way electromagnetic reversing valve, a three-position four-way electromagnetic reversing valve and a three-position three-way electromagnetic reversing valve.

6. The control system of the anchor miner pump station according to claim 1, characterized in that: The plunger pump group (2) comprises a first hydraulic plunger pump (21) and a second hydraulic plunger pump (22), wherein the first hydraulic plunger pump (21) is used to provide high-pressure hydraulic oil to the cutting / anchoring hydraulic system (4), and the second hydraulic plunger pump (22) is used to provide high-pressure hydraulic oil to the traveling hydraulic system (5).

7. The control system of the anchor miner pump station according to claim 6, characterized in that: It also includes an auxiliary hydraulic system (6) for providing pressure oil to the auxiliary actuator of the anchor miner, and the auxiliary hydraulic system (6) is connected to the second hydraulic plunger pump (22).

8. An anchor miner, characterized in that: A control system for an anchor miner pump station as claimed in any one of claims 1 to 7 is used.

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