A full-automatic electro-hydraulic control system of a water exploration drilling rig

Abstract

The present application belongs to the field of drilling machines, and particularly relates to a full-automatic electro-hydraulic control system of a water exploration drilling machine, which comprises a gripper, a hydraulic chuck, a filter, an overflow valve, a shuttle valve, a three-way explosion-proof proportional solenoid valve, a drilling machine motor, a pressure sensor, a pressure gauge, a feeding oil cylinder, a direction adjusting motor, a lower cavity one-way throttling valve, an upper cavity one-way throttling valve, an electromagnetic ball valve, a two-position three-way electromagnetic reversing valve, a high-pressure stop valve, a hydraulic control one-way valve, a one-way valve, an electromagnetic reversing valve, a throttling hole and a pump station. The full-automatic electro-hydraulic control system of the water exploration drilling machine is capable of automatically completing processes such as rod loading, drilling, rod connecting, rod withdrawing and rod loosening through electro-hydraulic control combination and hydraulic function linkage precise control. Remote control operation and manual operation of the above processes can be realized through switching, and various operation modes of one system can be realized.

Description

Technical Field

[0001] This invention belongs to the field of drilling machinery, specifically relating to a fully automatic electro-hydraulic control system for a water exploration drilling rig. Background Technology

[0002] Currently, water exploration drilling rigs have a wide range of applications, including tunnel excavation and tunnel construction. However, the hydraulic control system of water exploration drilling rigs is mostly manually controlled, requiring operators to continuously operate by pulling the handle, which cannot adapt to the current mainstream of equipment automation and intelligence. Summary of the Invention

[0003] The purpose of this invention is to automate the processes of rod loading, drilling, rod connection, rod retraction, and rod release by combining electro-hydraulic control and hydraulic function linkage on the basis of manual operation of existing water exploration drilling rigs.

[0004] The present invention provides the following technical solution: a fully automatic electro-hydraulic control system for a water exploration drilling rig, comprising a triple explosion-proof proportional solenoid valve, a left solenoid directional valve and a right solenoid directional valve, wherein the oil inlets of the triple explosion-proof proportional solenoid valve and the left solenoid directional valve are connected to a pump station, and the first part of the triple explosion-proof proportional solenoid valve is connected to the drilling rig motor, the second part is connected to the feed cylinder and the third part is connected to the directional motor.

[0005] The first oil circuit, which is led out from the left solenoid directional valve, is connected to the clamp after passing through a two-position three-way solenoid directional valve and a first solenoid ball valve; the clamp is kept open by disconnecting the first solenoid ball valve.

[0006] The second oil circuit leading from the left solenoid directional valve is connected to the hydraulic chuck; two opposing double check valves are connected between the first and second oil circuits of the left solenoid directional valve.

[0007] The first oil circuit, led out from the right solenoid directional valve, is connected to the two-position three-way solenoid directional valve and the hydraulic chuck via two branches respectively; the second oil circuit, led out from the right solenoid directional valve, is connected to the hydraulic chuck via a hydraulically controlled check valve.

[0008] The first working port of the second section of the triple explosion-proof proportional solenoid valve is connected to the rodless chamber of the feed cylinder via the first branch, and the first working port is connected to the P2 port of the right solenoid directional valve via the second branch. The rodless chamber is connected to the lower chamber one-way throttle valve in the first branch of the second branch. The second working port of the second section of the triple explosion-proof proportional solenoid valve is connected to the rod chamber of the feed cylinder via the first branch, and the second working port is connected to the T2 port of the right solenoid directional valve via the second branch. The rod chamber is connected to the upper chamber one-way throttle valve in the first branch of the second branch.

[0009] The forward and reverse oil circuits of the drilling rig motor are both connected to the first section of the triple explosion-proof proportional solenoid valve and then connected to the hydraulic chuck via the first check valve. The reverse oil circuit is connected to the auxiliary oil port of the clamp for auxiliary clamping.

[0010] The dual check valves and the triple explosion-proof proportional solenoid valve are all connected to the load-sensitive feedback oil circuit. The load-sensitive feedback oil circuit includes a shuttle valve. The middle port of the shuttle valve is connected to the LS port of the pump station. The L1 port of the shuttle valve is connected to the triple explosion-proof proportional solenoid valve. The L2 port of the shuttle valve is connected to the dual check valve and the left solenoid directional valve. The load pressure is screened through the shuttle valve, and only the maximum load pressure is fed back to the pump.

[0011] Furthermore, a second pressure sensor is connected to the oil circuit connected to the rodless chamber of the feed cylinder. The second pressure sensor detects whether the pressure is higher than a preset threshold, and then the second reversing control of the triple explosion-proof proportional solenoid valve stops the feed cylinder from operating.

[0012] Furthermore, a first pressure sensor is connected to the forward rotation oil circuit connected to the drilling rig motor. The first pressure sensor detects whether the pressure is higher than a preset threshold, and then the first reversing control of the three-way explosion-proof proportional solenoid valve stops the drilling rig motor.

[0013] Furthermore, a pressure gauge is connected between the rod chamber and the upper chamber one-way throttle valve of the feed cylinder, and a pressure gauge is connected between the rodless chamber and the lower chamber one-way throttle valve of the feed cylinder.

[0014] Furthermore, a high-pressure shut-off valve is connected in the oil circuit between the oil inlet of the left solenoid directional valve and the pump station.

[0015] Furthermore, an overflow valve is connected to the load-sensitive feedback oil circuit.

[0016] Furthermore, a branch of the first oil circuit leading from the right solenoid directional valve is connected to the hydraulic chuck via the second check valve.

[0017] Furthermore, the left solenoid directional valve, the right solenoid directional valve, the second solenoid ball valve, the second check valve, the hydraulic check valve, the first check valve, and the double check valve constitute an integrated valve group.

[0018] Furthermore, the oil discharge port of the drilling rig motor is connected to the unloading oil circuit after passing through a filter.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The present invention provides a fully automatic electro-hydraulic control system for a water exploration drilling rig. Through the combination of electro-hydraulic control and hydraulic function linkage for precise control, it can automatically complete processes such as rod loading, drilling, rod connection, rod retraction, and rod release. It can also switch between remote control and manual operation of the above processes, enabling multiple operation modes of one system.

[0021] This electro-hydraulic control system does not require a specially designed load-sensitive multi-way valve. Upgrading the system can be achieved simply by using a conventional load-sensitive electro-hydraulic multi-way valve in combination with a newly designed integrated valve assembly, resulting in a low upgrade cost.

[0022] This electro-hydraulic control system, through electro-hydraulic integration, can realize the individual operation of the clamp, hydraulic chuck, feed cylinder and drilling motor, as well as the linkage of the above-mentioned actuators, which meets the requirements of construction technology. Attached Figure Description

[0023] Figure 1 This is a diagram of the fully automatic electro-hydraulic control system for a water exploration drilling rig.

[0024] Figure 2 This is a diagram showing the composition of an integrated valve assembly.

[0025] Figure 3 This is a structural diagram of a water exploration drilling rig.

[0026] In the diagram: 1-Clamping device; 2-Hydraulic chuck; 3-Filter; 4-Relief valve; 5-Shuttle valve; 6-Triple explosion-proof proportional solenoid valve; 7-Drilling rig motor; 8-First pressure sensor; 9-Pressure gauge; 10-Feed cylinder; 11-Directional motor; 12-Lower chamber one-way throttle valve; 13-Second pressure sensor; 14-Upper chamber one-way throttle valve; 15-First solenoid ball valve; 16-Two-position three-way solenoid directional valve; 17-Integrated valve group; 18-High-pressure shut-off valve; 19-Second solenoid ball valve; 20-Double one-way valve; 21-First one-way valve; 22-Hydraulic one-way valve; 23-Second one-way valve; 24-Left solenoid directional valve; 25-Throttle orifice; 26-Right solenoid directional valve; 27-Pump station. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] like Figure 1 , Figure 2 As shown: A fully automatic electro-hydraulic control system for a water exploration drilling rig includes a triple explosion-proof proportional solenoid valve 6, a left solenoid directional valve 24 and a right solenoid directional valve 26. The oil inlets of the triple explosion-proof proportional solenoid valve 6 and the left solenoid directional valve 24 are connected to a pump station 27. The first section of the triple explosion-proof proportional solenoid valve 6 is connected to the drilling rig motor 7, the second section is connected to the feed cylinder 10, and the third section is connected to the directional motor 11.

[0029] The first oil circuit led out from the left solenoid directional valve 24 is connected to the clamp 1 via the two-position three-way solenoid directional valve 16 and the first solenoid ball valve 15; the clamp 1 is kept open by disconnecting the first solenoid ball valve 15.

[0030] The second oil circuit leading out from the left solenoid directional valve 24 is connected to the hydraulic chuck 2; two opposing double check valves 20 are connected between the first oil circuit and the second oil circuit of the left solenoid directional valve 24.

[0031] The first oil circuit, which is led out from the right solenoid directional valve 26, is connected to the two-position three-way solenoid directional valve 16 and the hydraulic chuck 2 via two branches respectively; the second oil circuit, which is led out from the right solenoid directional valve 26, is connected to the hydraulic chuck 2 via the hydraulic control check valve 22.

[0032] The first working port of the second section of the triple explosion-proof proportional solenoid valve 6 is connected to the rodless chamber of the feed cylinder 10 via the first branch, and the first working port is connected to the P2 port of the right solenoid directional valve 26 via the second branch. The rodless chamber is connected to the lower chamber one-way throttle valve 12 in the first branch of the second branch. The second working port of the second section of the triple explosion-proof proportional solenoid valve 6 is connected to the rod chamber of the feed cylinder 10 via the first branch, and the second working port is connected to the T2 port of the right solenoid directional valve 26 via the second branch. The rod chamber is connected to the upper chamber one-way throttle valve 14 in the first branch of the second branch.

[0033] Both the rod-side and rodless sides of the feed cylinder 10 are connected to one-way throttle valves to ensure that the gripper and hydraulic chuck move first during the linkage function, and then the feed cylinder moves.

[0034] A pressure gauge 9 is connected between the rod chamber of the feed cylinder 10 and the upper chamber one-way throttle valve 14, and a pressure gauge 9 is connected between the rodless chamber of the feed cylinder 10 and the lower chamber one-way throttle valve 12.

[0035] The forward and reverse oil circuits of the drilling motor 7, which are led out from the first section of the triple explosion-proof proportional solenoid valve 6, are connected to the hydraulic chuck 2 after passing through the first check valve 21. The reverse oil circuit is connected to the auxiliary oil port of the clamp 1 for auxiliary clamping.

[0036] Both the dual check valve 20 and the triple explosion-proof proportional solenoid valve 6 are connected to the load-sensitive feedback oil circuit. The load-sensitive feedback oil circuit includes a shuttle valve 5. The middle port of the shuttle valve 5 is connected to the LS port of the pump station 27. The L1 port of the shuttle valve 5 is connected to the triple explosion-proof proportional solenoid valve 6, and the L2 port of the shuttle valve 5 is connected to the dual check valve 20 and the left solenoid directional valve 24. The shuttle valve 5 filters the load pressure, feeding back only the maximum load pressure to the pump. An overflow valve 4 is connected to the load-sensitive feedback oil circuit.

[0037] A second pressure sensor 13 is connected to the oil circuit connected to the rodless chamber of the feed cylinder 10. The second pressure sensor 13 detects whether the pressure is higher than a preset threshold, and then the second reversing control of the triple explosion-proof proportional solenoid valve 6 stops the feed cylinder 10 from operating.

[0038] A first pressure sensor 8 is connected to the forward rotation oil circuit connected to the drilling motor 7. The first pressure sensor 8 detects whether the pressure is higher than a preset threshold, and then the first reversing control of the triple explosion-proof proportional solenoid valve 6 stops the drilling motor 7.

[0039] A high-pressure shut-off valve 18 is connected in the oil circuit between the oil inlet of the left solenoid directional valve 24 and the pump station 27.

[0040] The branch of the first oil circuit leading from the right solenoid directional valve 26 is connected to the hydraulic chuck 2 after passing through the second check valve 23.

[0041] The left solenoid directional valve 24, the right solenoid directional valve 26, the second solenoid ball valve 19, the second check valve 23, the hydraulic check valve 22, the first check valve 21, and the double check valve 20 constitute an integrated valve group 17.

[0042] The oil discharge port of the drilling rig motor 7 is connected to the unloading oil circuit after passing through the filter 3.

[0043] When the drilling rig is in the rod loading process, the clamp 1 needs to be released first, and the hydraulic chuck 2 needs to be released first. After the drill rod passes through the hydraulic chuck 2, it is clamped. The feed cylinder 10 moves forward, causing the hydraulic chuck 2 to clamp the drill rod and feed it forward, passing through the clamp 1 and pressing against the coal wall to complete the rod loading process. In this process, the left solenoid valve 24 first switches to the right position, and the two-position three-way solenoid valve 16 and the first solenoid ball valve 15 remain in their original positions, so that the pressure oil passes through the above valves to reach the spring chamber of the clamp 1 and overcomes the spring force to open the clamp 1 (the clamp is normally closed, but opens when pressure is applied). Then, the first solenoid ball valve 15 switches to the left position, sealing the pressure oil in the spring chamber, so that the clamp 1 remains in a long-term open state. Then, the left solenoid valve 24 switches to the middle position, and the right solenoid valve 26 remains in the middle position. At this time, the clamp 1 opens, the hydraulic chuck 2 opens, and the drill rod passes through the hydraulic chuck 2. Then, the left solenoid valve 24 switches to the middle position, and the right solenoid valve 26 remains in the middle position. At this time, the clamp 1 opens, the hydraulic chuck 2 opens, and the drill rod passes through the hydraulic chuck 2. Switching to the left position, the first solenoid ball valve 15 remains in its original position, and the pressurized oil reaches the hydraulic chuck 2 after passing through the valve. The hydraulic chuck 2 closes and clamps the drill rod (the hydraulic chuck is normally open and closed when pressure is applied); finally, the second section of the triple explosion-proof proportional solenoid valve 6 reverses, and the feed cylinder 10 starts to feed. The right solenoid reversing valve 26 remains in the neutral position. At this time, the hydraulic chuck 2 carries the drill rod forward and passes through the open clamp 1 until the drill rod head hits the coal wall. When the second pressure sensor 13 detects that the pressure is higher than 5MPa, it indicates that the drill rod head has reached the coal wall. The second section of the triple explosion-proof proportional solenoid valve 6 returns to the neutral position, and the drill rod loading process is completed.

[0044] When the drilling rig is in the drilling process, the clamp 1 needs to be released, the hydraulic chuck 2 needs to be clamped, the drilling rig motor 7 needs to be rotated, and the feed cylinder 10 needs to be fed forward. During this process, the left solenoid directional valve 24 switches to the middle position, the right solenoid directional valve 26 switches to the left position, the two-position three-way solenoid directional valve 16 switches to the right position, and the first solenoid ball valve 15 switches to the right position. At this time, the clamp 1, the hydraulic chuck 2 and the feed cylinder 10 are in a linked state. When the second section of the triple explosion-proof proportional solenoid valve 6 switches to make the feed cylinder 10 feed, under the throttling action of the lower chamber one-way throttle valve 12, the pressure oil first passes through the A port of the second section of the triple explosion-proof proportional solenoid valve to the left position of the right solenoid directional valve 26. Then, a stream of hydraulic oil passes through the two-position three-way solenoid directional valve 16 and the first solenoid ball valve 15 to the clamp 1, making the clamp 1 open. At the same time, another stream of hydraulic oil passes through the second one-way valve 23 to the hydraulic chuck 2, making the hydraulic chuck 2 clamp. After the above actions are completed, the pressure increases, and the hydraulic oil enters the feed cylinder 10 through the lower chamber one-way throttle valve 12 to feed the cylinder. At the same time, the first section of the triple explosion-proof proportional solenoid valve 6 reverses to make the drilling motor 7 rotate forward, and the drilling process is completed.

[0045] When the drilling rig is in the rod connection process, one drill rod has been driven into the coal face. It is necessary to install another drill rod and make the two drill rods firmly connected through the female thread at the tail of the old drill rod and the male thread at the head of the new drill rod. At this time, the clamp 1 needs to clamp the old drill rod, the hydraulic chuck 2 is released to wait for the new drill rod to be inserted, the feed cylinder 10 retracts, and after the new drill rod is inserted into the hydraulic chuck 2, the chuck clamps it. The feed cylinder 10 drives the new drill rod to move forward, and at the same time the drilling rig motor 7 rotates to connect the two drill rods by thread. During this process, the left solenoid directional valve 24, right solenoid directional valve 26, two-position three-way solenoid directional valve 16, and first solenoid ball valve 15 are in the same state as in the drilling process described above. The second phase of the triple explosion-proof proportional solenoid valve 6 reverses, causing the feed cylinder 10 to retract. At this time, the clamp 1, hydraulic chuck 2, and feed cylinder 10 are still in a linked state. Under the throttling action of the upper chamber one-way throttle valve 14, the pressurized oil first reaches the left position of the right solenoid directional valve 26 through port B of the second phase of the triple explosion-proof proportional solenoid valve, and then reaches the hydraulic control port of the hydraulic control check valve 22, causing the valve to open. At this time, the hydraulic chuck 2 releases oil, the chuck opens, and at the same time, the hydraulic oil in the clamp 1 returns through the first solenoid ball valve 15, two-position three-way solenoid directional valve 16, right solenoid directional valve 26, and port A of the second phase of the triple explosion-proof proportional solenoid valve, causing the clamp 1 to clamp. After the above actions are completed, the hydraulic oil enters the feed cylinder through the upper chamber one-way throttle valve 14, causing the cylinder to retract, waiting for the new drill pipe to be inserted. After the feed cylinder 10 retracts to its position, the new drill rod is inserted into the hydraulic chuck 2. The first solenoid ball valve 15 switches to the left position to keep the clamp 1 in a clamped state. The other valve groups remain in the state during the drilling process. At this time, the feed cylinder 10 feeds, and the hydraulic chuck 2 clamps and drives the new drill rod forward. The clamp 1 remains clamped under the action of the first solenoid ball valve 15. The drilling rig motor drives the new drill rod to rotate forward at the same time. When the new drill rod is fed to the tail of the old drill rod, the old drill rod does not move under the clamp of the clamp. The new drill rod is threadedly connected to the old drill rod under the combined action of rotation and feed. When the first pressure sensor 8 detects a pressure higher than 6MPa, it indicates that the connection is complete, the action stops, and the rod connection process is completed.

[0046] When the drilling rig is in the rod retraction process, the clamp 1 is released, and the hydraulic chuck 2 reciprocates, pulling the drill rods out one by one from inside the coal wall. This process is similar to the rod loading process. The right solenoid directional valve 26 returns to the neutral position, and the two-position three-way solenoid directional valve 16 switches to the left position. The linkage function between the feed cylinder, clamp, and hydraulic chuck ends, and the individual action function of each action is restored. The status of the remaining valve groups is the same as in the rod loading process.

[0047] When the drilling rig is in the rod release process, the clamp 1 clamps the previous drill rod, and the hydraulic chuck 2 clamps the next drill rod and reverses to loosen its threaded connection. Then, the feed cylinder 10 retracts to remove the next drill rod. During this process, the right solenoid directional valve 26 switches to the right position, and the two-position three-way solenoid directional valve 16 switches to the right position, creating a linkage. First, the drilling rig motor 7 reverses. Under the action of the hydraulic control check valve 22, the drilling rig motor rotates and the hydraulic chuck is linked. Regardless of whether the drilling rig motor rotates forward or backward, the hydraulic chuck will clamp. At this time, the threaded connection of the two drill rods is loosened. Then, the feed cylinder retracts. Since the right solenoid directional valve 26 is in the right position, as the feed cylinder retracts, the clamp will loosen, and the chuck will tighten. In this way, the loosened drill rod will complete the rod retraction action during the retraction of the cylinder.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully automatic electro-hydraulic control system for a water exploration drilling rig, characterized in that: It includes a triple explosion-proof proportional solenoid valve (6), a left solenoid directional valve (24) and a right solenoid directional valve (26). The oil inlets of the triple explosion-proof proportional solenoid valve (6) and the left solenoid directional valve (24) are connected to the pump station (27). The first part of the triple explosion-proof proportional solenoid valve (6) is connected to the drilling rig motor (7), the second part is connected to the feed cylinder (10), and the third part is connected to the directional motor (11). The first oil circuit led out from the left solenoid directional valve (24) is connected to the clamp (1) after passing through the two-position three-way solenoid directional valve (16) and the first solenoid ball valve (15); the clamp (1) is opened by disconnecting the first solenoid ball valve (15); The second oil circuit led out from the left solenoid directional valve (24) is connected to the hydraulic chuck (2); the first oil circuit and the second oil circuit of the left solenoid directional valve (24) are connected to two opposing double check valves (20). The first oil circuit, which is led out from the right solenoid directional valve (26), is connected to the two-position three-way solenoid directional valve (16) and the hydraulic chuck (2) via two branches respectively; the second oil circuit, which is led out from the right solenoid directional valve (26), is connected to the hydraulic chuck (2) via the hydraulic control check valve (22); The first working port of the second section of the triple explosion-proof proportional solenoid valve (6) is connected to the rodless chamber of the feed cylinder (10) via the first branch, and the first working port is connected to the P2 port of the right solenoid directional valve (26) via the second branch. The rodless chamber is connected to the lower chamber one-way throttle valve (12) in the first branch of the second branch. The second working port of the second section of the triple explosion-proof proportional solenoid valve (6) is connected to the rod chamber of the feed cylinder (10) via the first branch, and the second working port is connected to the T2 port of the right solenoid directional valve (26) via the second branch. The rod chamber is connected to the upper chamber one-way throttle valve (14) in the first branch of the second branch. The forward and reverse oil circuits of the drilling motor (7) are led out from the first section of the triple explosion-proof proportional solenoid valve (6) and connected to the hydraulic chuck (2) after passing through the first check valve (21). The reverse oil circuit is connected to the auxiliary oil port of the clamp (1) for auxiliary clamping. The double check valve (20) and the triple explosion-proof proportional solenoid valve (6) are both connected to the load-sensitive feedback oil circuit. The load-sensitive feedback oil circuit includes a shuttle valve (5). The middle port of the shuttle valve (5) is connected to the LS port of the pump station (27). The L1 port of the shuttle valve (5) is connected to the triple explosion-proof proportional solenoid valve (6). The L2 port of the shuttle valve (5) is connected to the double check valve (20) and the left solenoid directional valve (24). The load pressure is screened by the shuttle valve (5), and only the maximum load pressure is fed back to the pump.

2. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 1, characterized in that: A second pressure sensor (13) is connected in the oil circuit connected to the rodless chamber of the feed cylinder (10). The second pressure sensor (13) detects whether the pressure is higher than the preset threshold, and then the second reversing control of the triple explosion-proof proportional solenoid valve (6) stops the feed cylinder (10) from operating.

3. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 2, characterized in that: A first pressure sensor (8) is connected to the forward rotation oil circuit connected to the drilling motor (7). The first pressure sensor (8) detects whether the pressure is higher than the preset threshold, and then the first reversing control of the triple explosion-proof proportional solenoid valve (6) stops the drilling motor (7).

4. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 3, characterized in that: A pressure gauge (9) is connected between the rod chamber of the feed cylinder (10) and the upper chamber one-way throttle valve (14), and a pressure gauge (9) is connected between the rodless chamber of the feed cylinder (10) and the lower chamber one-way throttle valve (12).

5. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 4, characterized in that: A high-pressure shut-off valve (18) is connected in the oil circuit between the oil inlet of the left solenoid directional valve (24) and the pump station (27).

6. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 5, characterized in that: An overflow valve (4) is connected to the load-sensitive feedback oil circuit.

7. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 6, characterized in that: The branch of the first oil circuit leading from the right solenoid directional valve (26) is connected to the hydraulic chuck (2) via the second check valve (23).

8. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 7, characterized in that: The left solenoid directional valve (24), right solenoid directional valve (26), second solenoid ball valve (19), second check valve (23), hydraulic check valve (22), first check valve (21), and double check valve (20) constitute an integrated valve group (17).

9. The fully automatic electro-hydraulic control system for a water exploration drilling rig according to claim 1, characterized in that: The oil discharge port of the drilling motor (7) is connected to the unloading oil circuit after passing through the filter (3).

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