An on-board drilling rig hydraulic multi-dimensional control module and control method

Abstract

The present application provides an on-board drilling machine hydraulic multi-dimensional control module and a control method, belonging to the technical field of on-board drilling machine control. The on-board drilling machine hydraulic multi-dimensional control module comprises a multi-way valve, a multi-dimensional control valve block and a cut-off valve. A plurality of multi-action valve cores and a plurality of single-action valve cores are arranged on the multi-way valve, and the number of valve cores is less than the number of actions of the on-board drilling machine. The multi-action valve cores control the on-board drilling machine to realize multiple actions through the multi-dimensional control valve block, and the multiple actions are independent and performed at different times. The single-action valve cores control the on-board drilling machine to realize a single action, and the single actions controlled by the plurality of single-action valve cores are performed at the same time. The present application can reduce the volume of the on-board drilling machine control valve, save the installation space volume, reduce the number of multi-way valve control pieces, simplify the pipeline and save the cost.

Description

Technical Field

[0001] This invention belongs to the technical field of airborne drilling rig control, and specifically discloses an airborne drilling rig hydraulic multidimensional control module and control method. Background Technology

[0002] With the trend of intelligent and integrated development of underground equipment in coal mines, the application of integrated tunneling and exploration machines and integrated tunneling and bolting machines is gradually increasing. Among these, integrated tunneling and bolting machines, bolt transport machines, and bolting machines integrate onboard drilling rigs, improving production efficiency. However, due to the numerous actions of onboard drilling rigs, hydraulic control is complex. Currently, the common method is to use a seven-way valve to control all actions of an onboard drilling rig. The hydraulic control actions include drill box rotation, drill box feed, support column feed, clamp opening and closing, drill frame back-and-forth swing, drill frame left-and-right swing, and drill frame up-and-down lifting. The first four actions control the working parts of the drill frame, while the latter three control the overall position adjustment of the drill frame. This method inevitably suffers from problems such as numerous control valve groups, large space occupation, inconvenient operation, and complex piping, affecting the efficiency of the onboard drilling rig. Summary of the Invention

[0003] This invention provides a hydraulic multi-dimensional control module and control method for airborne drilling rigs, which solves the problems of existing hydraulic control methods for airborne drilling rigs, such as multiple control valve groups, large space occupation, inconvenient operation, and complex pipelines.

[0004] This invention provides a hydraulic multi-dimensional control module for an airborne drilling rig, comprising a multi-way valve, a multi-dimensional control valve block, and a shut-off valve. The multi-way valve is equipped with a set of multi-action valve cores and multiple sets of single-action valve cores, the number of valve cores being less than the number of actions of the airborne drilling rig. The multi-action valve cores control the airborne drilling rig to achieve multiple actions through the multi-dimensional control valve block, with these actions being independent and not performed simultaneously. The single-action valve cores control the airborne drilling rig to achieve a single action, with the single action controlled by multiple sets of single-action valve cores occurring simultaneously. The two working ports of each set of single-action valve cores are respectively connected to the two ports of the corresponding single-action actuator. The multi-dimensional control valve block is equipped with two sets of channel groups; each channel group includes one single-interface channel and multiple double-interface channels. Each interface channel has an interface X for a single-interface channel and two interfaces Y and Y′ for each dual-interface channel. The total number of dual-interface channels is equal to the total number of actions controlled by the multi-action valve core. The multiple dual-interface channels are independent of each other. The interface X of a single-interface channel is connected to the interface Y′ of each dual-interface channel. A shut-off valve is installed in the interface Y′ of each dual-interface channel to shut off or connect the corresponding dual-interface channel and the single-interface channel. The interfaces X of the two single-interface channels are respectively connected to the two working oil ports of the multi-action valve core. The two oil ports of the actuator corresponding to each action controlled by the multi-action valve core are respectively connected to the interfaces Y of the two dual-interface channels located in different channel groups.

[0005] Furthermore, the aforementioned airborne drilling rig hydraulic multidimensional control module also includes a mounting block, which has a mounting port I and is fixed to the multi-way valve; the multidimensional control valve block has a mounting port II corresponding to the mounting port I, and screws pass through the mounting port II and the mounting port I to fix the multidimensional control valve block to the mounting block.

[0006] Furthermore, the shut-off valve is a cartridge-type solenoid ball valve.

[0007] Furthermore, connectors are installed on both the single-interface channel interface X and the dual-interface channel interface Y.

[0008] Furthermore, the multi-way valve is equipped with one set of multi-action valve cores and four sets of single-action valve cores; the two working ports of the first set of single-action valve cores are connected to the two ports of the drilling rig motor, the two working ports of the second set of single-action valve cores are connected to the two ports of the feed cylinder, the two working ports of the third set of single-action valve cores are connected to the two ports of the support column cylinder, and the two working ports of the fourth set of single-action valve cores are connected to the two ports of the clamp cylinder, realizing the simultaneous operation of four actions: drill box rotation, drill box feed, support column feed, and clamp opening and closing; each channel group includes one single-interface channel and three double-interface channels; in the first channel group, the three double-interface channels are channel A, channel B, and channel C, and the single-interface channel is channel D. Channel A is equipped with interface A and interface A′, channel B is equipped with interface B and interface B′, channel C is equipped with interface C and interface C′, and channel D is equipped with interface D. Interface D is respectively... The first channel is connected to interfaces A′, B′, and C′. In the second channel group, the single-interface channel is channel E, and the three dual-interface channels are channel F, channel G, and channel H. Channel E has interface E, channel F has interfaces F and F′, channel G has interfaces G and G′, and channel H has interfaces H and H′. Interface E is connected to interfaces F′, G′, and H′ respectively. Shut-off valves are installed at interfaces A′, B′, C′, F′, G′, and H′. Interfaces D and E are connected to the two working ports of the multi-action valve core. Interfaces A and F are connected to the two ports of the front and rear swing cylinders to achieve front and rear swing of the drill frame. Interfaces B and G are connected to the two ports of the left and right swing cylinders to achieve left and right swing of the drill frame. Interfaces C and H are connected to the two ports of the up and down lifting cylinders to achieve up and down lifting of the drill frame.

[0009] Furthermore, the shut-off valve is a solenoid ball valve, which is connected to the host computer via a PLC; solenoid ball valve I, solenoid ball valve II, solenoid ball valve III, solenoid ball valve IV, solenoid ball valve V, and solenoid ball valve VI are respectively installed on interfaces A′, B′, C′, F′, G′, and H′.

[0010] Furthermore, connectors are installed on interfaces A, B, C, D, E, F, G, and H on the multi-dimensional control valve block.

[0011] Furthermore, the multi-dimensional control valve block is provided with mounting port M and mounting port N; a mounting block is welded onto the multi-way valve, and two screws pass through mounting port M and mounting port N respectively to fix the multi-dimensional control valve block onto the mounting block.

[0012] Furthermore, the multi-dimensional control valve block is equipped with screw plugs P and Q.

[0013] The present invention also provides a hydraulic multi-dimensional control method for an airborne drilling rig, implemented using the aforementioned hydraulic multi-dimensional control module for an airborne drilling rig, comprising the following steps:

[0014] The first link of the multi-way valve controls the rotation of the drilling rig motor;

[0015] The second link of the multi-way valve controls the extension and retraction of the feed cylinder;

[0016] The third link of the multi-way valve controls the extension and retraction of the hydraulic cylinder supporting the column;

[0017] The fourth link of the multi-way valve controls the extension and retraction of the clamp cylinder;

[0018] Using a remote control or a host computer to issue commands, solenoid ball valves I and IV are energized and connected, while solenoid ball valves II, III, V, and VI are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drill frame to swing back and forth.

[0019] Using a remote control or a host computer to issue commands, solenoid ball valves II and V are energized and connected, while solenoid ball valves I, III, IV, and VI are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drill frame to swing left and right.

[0020] Using a remote control or a host computer to issue commands, solenoid ball valves III and VI are energized and connected, while solenoid ball valves I, II, IV, and V are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drilling frame to lift up and down.

[0021] The present invention has the following beneficial effects:

[0022] 1. The hydraulic multidimensional control module and control method for airborne drilling rigs provided by the present invention can realize the control of multiple asynchronous actions by a single valve, and each action meets the flow rate and pressure requirements of its action;

[0023] 2. Integrating multiple solenoid ball valves on the side of the multi-way valve is a method suitable for retrofitting various models of multi-way valves. It can reduce the size of the control valve for the onboard drilling rig, save installation space, reduce the number of control plates in the multi-way valve, simplify the pipeline, and save costs.

[0024] 3. The multi-dimensional control valve block can be modified according to actual needs to realize the control of more actions by a single multi-way valve;

[0025] 4. Achieving a high degree of integration in hydraulic control simplifies operation, reduces the labor intensity of workers, improves efficiency, and facilitates the further promotion of integrated equipment. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the hydraulic multi-dimensional control module for an airborne drilling rig.

[0028] Figure 2 A 3D view of a multi-dimensional control valve block;

[0029] Figure 3 for Figure 2 A floor plan;

[0030] Figure 4 This is a schematic diagram of the structure of an electromagnetic ball valve;

[0031] Figure 5 This is a hydraulic diagram of the hydraulic multi-dimensional control module of the airborne drilling rig in Example 2.

[0032] In the diagram: 1-Multi-way valve; 2-Mounting block; 3-Multi-dimensional control valve block; 4-Solenoid ball valve; 4.1-Solenoid ball valve I; 4.2-Solenoid ball valve II; 4.3-Solenoid ball valve III; 4.4-Solenoid ball valve IV; 4.5-Solenoid ball valve V; 4.6-Solenoid ball valve VI; 5-Connector; 6-Screw; 7-Drilling rig motor; 8-Feed cylinder; 9-Support column cylinder; 10-Clamping cylinder; 11-Front-back swing cylinder; 12-Left-right swing cylinder; 13-Up-down lifting cylinder. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] This embodiment provides a hydraulic multi-dimensional control module for an airborne drilling rig, including a multi-way valve 1, a multi-dimensional control valve block 3, and a shut-off valve. The multi-way valve 1 is equipped with a set of multi-action valve cores and multiple sets of single-action valve cores, the number of valve cores being less than the number of actions of the airborne drilling rig. The multi-action valve cores control the airborne drilling rig to achieve multiple actions through the multi-dimensional control valve block 3, with these actions being independent and not performed simultaneously. The single-action valve cores control the airborne drilling rig to achieve a single action, and the single actions controlled by multiple sets of single-action valve cores are performed simultaneously. The two working ports of each set of single-action valve cores are respectively connected to the two ports of the corresponding single-action actuator. The multi-dimensional control valve block 3 is equipped with two sets of channel groups; each channel group includes a single-interface channel and... Multiple dual-interface channels are provided. Each single-interface channel has an interface X. Each dual-interface channel has a connected interface Y and an interface Y′. The total number of dual-interface channels is equal to the total number of actions controlled by the multi-action valve core. The multiple dual-interface channels are independent of each other. The interface X of the single-interface channel is connected to the interface Y′ of each dual-interface channel. A shut-off valve is installed in the interface Y′ of each dual-interface channel to shut off or connect the corresponding dual-interface channel and the single-interface channel. The interfaces X of the two single-interface channels are respectively connected to the two working oil ports of the multi-action valve core. The two oil ports of the actuator corresponding to each action controlled by the multi-action valve core are respectively connected to the interfaces Y of the two dual-interface channels located in different channel groups.

[0036] Furthermore, the aforementioned airborne drilling rig hydraulic multi-dimensional control module also includes a mounting block 2, which has a mounting port I and is fixed to the multi-way valve 1. The multi-dimensional control valve block 3 has a mounting port II corresponding to mounting port I. A screw 6 passes through mounting port II and mounting port I to fix the multi-dimensional control valve block 3 to the mounting block 2. The screw 6 is an M12×50 hexagon socket head cap screw.

[0037] Furthermore, the shut-off valve is a cartridge-type solenoid ball valve 4.

[0038] Furthermore, connector 5 is installed on both interface X of the single-interface channel and interface Y of the dual-interface channel. Connector 5 is a standard H-type oil port connector, and different models and sizes can be selected according to the required flow rate.

[0039] Example 2

[0040] Based on the general operational requirements of an airborne drilling rig, seven actions must be performed: drill box rotation, drill box feed, support column feed, clamp opening and closing, drill frame back-and-forth swing, drill frame left-and-right swing, and drill frame up-and-down lifting. A five-way multi-port valve is selected for control. Since the drill box rotation, drill box feed, support column feed, and clamp opening and closing actions need to be performed simultaneously, the first four ports of the multi-port valve control these four actions. Since the drill frame back-and-forth swing, drill frame left-and-right swing, and drill frame up-and-down lifting actions need to be performed independently, the last port of the multi-port valve controls these three actions through multi-dimensional control valve block 3.

[0041] In this embodiment, the multi-way valve 1 is equipped with one set of multi-action valve cores and four sets of single-action valve cores; the two working ports of the first set of single-action valve cores are connected to the two ports of the drilling motor 7, the two working ports of the second set of single-action valve cores are connected to the two ports of the feed cylinder 8, the two working ports of the third set of single-action valve cores are connected to the two ports of the support column cylinder 9, and the two working ports of the fourth set of single-action valve cores are connected to the two ports of the clamp cylinder 10, realizing the simultaneous operation of four actions: drill box rotation, drill box feed, support column feed, and clamp opening and closing; each channel group includes one single-interface channel and three double-interface channels; in the first channel group, the three double-interface channels are channel A, channel B, and channel C (i.e., Y = A, B, C), and the single-interface channel is channel D (i.e., X = D). Channel A is equipped with interface A and interface A', channel B is equipped with interface B and interface B', channel C is equipped with interface C and interface C', and channel D is equipped with interface D. Interface D is divided into Do not connect to interfaces A′, B′, and C′; in the second group of channels, the single-interface channel is channel E (i.e., X = E), and the three double-interface channels are channel F, channel G, and channel H (i.e., Y = F, G, H). Channel E is equipped with interface E, channel F is equipped with interface F and interface F′, channel G is equipped with interface G and interface G′, and channel H is equipped with interface H and interface H′. Interface E is connected to interfaces F′, G′, and H′ respectively; shut-off valves are installed on interfaces A′, B′, C′, F′, G′, and H′; interfaces D and E are connected to the two working ports of the multi-action valve core respectively; interfaces A and F are connected to the two ports of the front and rear swing cylinder 11 respectively to realize the front and rear swing of the drill frame; interfaces B and G are connected to the two ports of the left and right swing cylinder 12 respectively to realize the left and right swing of the drill frame; interfaces C and H are connected to the two ports of the up and down lifting cylinder 13 respectively to realize the up and down lifting of the drill frame.

[0042] Furthermore, the shut-off valve is a solenoid ball valve 4, which is connected to the host computer via a PLC; solenoid ball valves I 4.1, II 4.2, III 4.3, IV 4.4, V 4.5, and VI 4.6 are respectively installed on interfaces A′, B′, C′, F′, G′, and H′.

[0043] Furthermore, connectors 5 are installed on interfaces A, B, C, D, E, F, G, and H on the multi-dimensional control valve block.

[0044] Furthermore, the multi-dimensional control valve block 3 is provided with mounting port M and mounting port N; the multi-way valve 1 is welded with mounting block 2, and two screws 6 pass through mounting port M and mounting port N respectively to fix the multi-dimensional control valve block 3 to mounting block 2.

[0045] Furthermore, the multi-dimensional control valve block 3 is equipped with screw plugs P and Q.

[0046] Example 3

[0047] This embodiment provides a hydraulic multi-dimensional control method for an airborne drilling rig, implemented using the aforementioned airborne drilling rig hydraulic multi-dimensional control module, and includes the following steps:

[0048] The first link of the multi-way valve controls the rotation of drill rig motor 7;

[0049] The second link of the multi-way valve controls the extension and retraction of the feed cylinder 8;

[0050] The third link of the multi-way valve controls the extension and retraction of the support column cylinder 9;

[0051] The fourth link of the multi-way valve controls the extension and retraction of the clamp cylinder 10;

[0052] Using a remote control or host computer to issue commands, solenoid ball valves I4.1 and IV4.4 are energized and connected, while solenoid ball valves II4.2, III4.3, V4.5, and VI4.6 are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drill frame to swing back and forth.

[0053] Using a remote control or a host computer to issue commands, solenoid ball valves II 4.2 and V 4.5 are energized and connected, while solenoid ball valves I 4.1, III 4.3, IV 4.4, and VI 4.6 are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drill frame to swing left and right.

[0054] Using a remote control or a host computer to issue commands, solenoid ball valves Ⅲ4.3 and Ⅵ4.6 are energized and connected, while solenoid ball valves Ⅰ4.1, Ⅱ4.2, Ⅳ4.4, and Ⅴ4.5 are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drilling frame to lift up and down.

[0055] By adjusting the secondary pressure limiter of the fifth section of the multi-way valve, the flow and pressure of the fifth section can simultaneously meet the three actions of the drill frame lifting up and down, swinging back and forth, and swinging left and right.

[0056] This enables the multi-way valve to achieve three multi-dimensional action functions: fifth-stage control and single-stage control.

[0057] This embodiment demonstrates a multi-way valve controlling three actions simultaneously. In actual use, the multi-dimensional control valve block 3 can be modified according to requirements to achieve multi-way valve control of more actions simultaneously.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic multi-dimensional control module for an airborne drilling rig, characterized in that, This includes multi-way valves, multi-dimensional control valve blocks, and shut-off valves; The multi-way valve is equipped with a set of multi-acting valve cores and a set of single-acting valve cores, and the number of valve cores is less than the number of actions of the airborne drilling rig. The multi-action valve core controls the on-board drilling rig to perform multiple actions through the multi-dimensional control valve block. These actions are independent of each other and are not performed simultaneously. A single-action valve core controls the onboard drilling rig to achieve a single action. Multiple sets of single-action valve cores control a single action simultaneously. The two working oil ports of each set of single-action valve cores are respectively connected to the two oil ports of the actuator corresponding to the single action. The multidimensional control valve block is equipped with two sets of channels; Each channel group includes one single-interface channel and multiple dual-interface channels. The single-interface channel is equipped with an interface X, and each dual-interface channel is equipped with a connected interface Y and an interface Y′. The total number of dual-interface channels is equal to the total number of actions controlled by the multi-action valve core. The multiple dual-interface channels are independent of each other, and the interface X of the single-interface channel is connected to the interface Y′ of each dual-interface channel. A shut-off valve is installed in the interface Y′ of each dual-interface channel to disconnect or connect the corresponding dual-interface channel with the single-interface channel. The two single-interface channels are connected to the two working oil ports of the multi-action valve core respectively. The two oil ports of the actuator corresponding to each action controlled by the multi-action valve core are respectively connected to the interface Y of two dual-interface channels located in different channel groups; The shut-off valve is a cartridge-type solenoid ball valve; The multi-way valve is equipped with one set of multi-acting valve cores and four sets of single-acting valve cores; The two working ports of the first set of single-action valve cores are connected to the two ports of the drilling rig motor; the two working ports of the second set of single-action valve cores are connected to the two ports of the feed cylinder; the two working ports of the third set of single-action valve cores are connected to the two ports of the support column cylinder; and the two working ports of the fourth set of single-action valve cores are connected to the two ports of the clamp cylinder, so that the four actions of drilling box rotation, drilling box feed, support column feed, and clamp opening and closing can be performed simultaneously. Each channel group includes one single-interface channel and three dual-interface channels; In the first group of channels, the three dual-interface channels are channel A, channel B and channel C, and the single-interface channel is channel D. Channel A is equipped with interface A and interface A′, channel B is equipped with interface B and interface B′, channel C is equipped with interface C and interface C′, and channel D is equipped with interface D. Interface D is connected to interface A′, interface B′ and interface C′ respectively. In the second group of channels, the single-interface channel is channel E, and the three dual-interface channels are channel F, channel G and channel H respectively. Channel E is equipped with interface E, channel F is equipped with interface F and interface F′, channel G is equipped with interface G and interface G′, and channel H is equipped with interface H and interface H′. Interface E is connected to interface F′, interface G′ and interface H′ respectively. Shut-off valves are installed at interfaces A′, B′, C′, F′, G′, and H′. Interfaces D and E are respectively connected to the two working oil ports of the multi-acting valve core; Interface A and interface F are respectively connected to the two oil ports of the front and rear swing cylinders to realize the front and rear swing of the drill frame; Interfaces B and G are respectively connected to the two oil ports of the left and right swing cylinders to realize the left and right swing of the drill frame; Interface C and interface H are connected to the two oil ports of the upper and lower lifting cylinders, respectively, to realize the upper and lower lifting of the drill frame.

2. The airborne drilling rig hydraulic multi-dimensional control module according to claim 1, characterized in that, It also includes a mounting block, which has a mounting port I, and the mounting block is fixed to the multi-way valve; The multidimensional control valve block is provided with a mounting port II corresponding to mounting port I. Screws pass through mounting port II and mounting port I to fix the multidimensional control valve block to the mounting block.

3. The airborne drilling rig hydraulic multi-dimensional control module according to claim 1, characterized in that, Connectors are installed on both the single-interface channel interface X and the dual-interface channel interface Y.

4. The airborne drilling rig hydraulic multi-dimensional control module according to claim 1, characterized in that, The shut-off valve is a solenoid ball valve, which is connected to the host computer via a PLC. Solenoid ball valve I, solenoid ball valve II, solenoid ball valve III, solenoid ball valve IV, solenoid ball valve V, and solenoid ball valve VI are respectively installed on interfaces A′, B′, C′, F′, G′, and H′.

5. The airborne drilling rig hydraulic multi-dimensional control module according to claim 4, characterized in that, Connectors are installed on interfaces A, B, C, D, E, F, G, and H on the multi-dimensional control valve block.

6. The airborne drilling rig hydraulic multi-dimensional control module according to claim 5, characterized in that, The multi-dimensional control valve block is equipped with mounting port M and mounting port N; A mounting block is welded onto the multi-way valve, and two screws pass through mounting port M and mounting port N respectively to fix the multi-dimensional control valve block onto the mounting block.

7. The airborne drilling rig hydraulic multi-dimensional control module according to claim 6, characterized in that, The multi-dimensional control valve block is equipped with screw plugs P and Q.

8. A method for multi-dimensional hydraulic control of an airborne drilling rig, characterized in that, The implementation using the airborne drilling rig hydraulic multi-dimensional control module according to any one of claims 4-7 includes the following steps: The first link of the multi-way valve controls the rotation of the drilling rig motor; The second link of the multi-way valve controls the extension and retraction of the feed cylinder; The third link of the multi-way valve controls the extension and retraction of the hydraulic cylinder supporting the column; The fourth link of the multi-way valve controls the extension and retraction of the clamp cylinder; Using a remote control or a host computer to issue commands, solenoid ball valves I and IV are energized and connected, while solenoid ball valves II, III, V, and VI are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drill frame to swing back and forth. Using a remote control or a host computer to issue commands, solenoid ball valves II and V are energized and connected, while solenoid ball valves I, III, IV, and VI are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drill frame to swing left and right. Using a remote control or a host computer to issue commands, solenoid ball valves III and VI are energized and connected, while solenoid ball valves I, II, IV, and V are not energized and disconnected. Then, the fifth link of the multi-way valve controls the drilling frame to lift up and down.

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