Control valve assembly, anchor drilling rig control system, anchor drilling rig and its control method

Abstract

This invention relates to a control valve assembly, a bolt drilling rig control system, a bolt drilling rig, and a control method thereof. The control valve assembly has a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port, a first control inlet, a second control inlet, and a control outlet. Furthermore, the control valve assembly includes a first balancing valve, a second balancing valve, a first shuttle valve, a hydraulically controlled check valve, a second shuttle valve, and a check valve. This invention enables fast and slow speed advance and coordinated water spraying functions for the bolt drilling rig, improving work efficiency, reducing drill rod damage rate, and improving the working environment for workers.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) supporting facilities, and more specifically, to a control valve group, a rock bolt drilling rig control system, a rock bolt drilling rig, and a control method thereof. Background Technology

[0002] Support work after tunnel excavation by a shield tunneling machine is a necessary step in tunnel construction, but it is also a complex and extremely inefficient task. Coal mines often require a large amount of support work. Traditional support work mainly involves manual operation of valve rods to complete various actions such as positioning, drilling rod loading, drill box rotation, water supply, rapid advance, slow advance, and advance retraction. Operators still need to manually operate the anchor drilling machine to control the valve rods directly at the working face. This results in insufficient automation, high labor intensity for workers, low efficiency, and low safety.

[0003] Anchor bolt support is divided into fast and slow advance. Existing technology only has one control valve to control the anchor bolt drilling speed, and the low-speed adjustment resolution is low, with few adjustable speed levels, which can easily cause the drill rod to bend or break. During anchor bolt support, the worker's working position is fixed, and the water spray during support will soak the operator's whole body, resulting in a harsh working environment. The worker's field of vision is limited, and the danger is high. Summary of the Invention

[0004] In view of this, the present invention provides a control valve assembly, a bolt drilling rig control system, a bolt drilling rig, and a control method thereof, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] To achieve the aforementioned objective, a first aspect of the present invention provides a control valve assembly, wherein the control valve assembly has a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port, a first control inlet, a second control inlet, and a control outlet, and the control valve assembly includes a first balancing valve, a second balancing valve, a first shuttle valve, a hydraulically controlled check valve, a second shuttle valve, and a check valve, wherein:

[0006] The first shuttle valve's oil port one is connected to the second control inlet, the first shuttle valve's oil port two is connected to the outlet of the hydraulic check valve, and the first shuttle valve's working port is connected to the control outlet.

[0007] The inlet of the hydraulic check valve is connected to the fifth port, the first port of the second shuttle valve, and the inlet of the check valve. The control chamber of the hydraulic check valve is connected to the first control inlet.

[0008] The first oil port of the second shuttle valve is connected to the oil inlet of the check valve, the second oil port of the second shuttle valve is connected to the third oil port and the first oil port of the first balance valve, and the working port of the second shuttle valve is connected to the control chamber of the second balance valve.

[0009] The oil outlet of the one-way valve is connected to the first oil port and the second oil port of the first balance valve;

[0010] The first oil port of the first balancing valve is connected to the third oil port, the second oil port of the first balancing valve is connected to the first oil port, the control chamber of the first balancing valve is connected between the fourth oil port and the first oil port of the second balancing valve, the inlet of the check valve of the first balancing valve is connected to the first oil port of the first balancing valve, and the outlet of the check valve of the first balancing valve is connected to the second oil port of the first balancing valve.

[0011] The first oil port of the second balance valve is connected to the fourth oil port, the second oil port of the second balance valve is connected to the second oil port, the inlet of the check valve of the second balance valve is connected to the first oil port of the second balance valve, and the outlet of the check valve of the second balance valve is connected to the second oil port of the second balance valve.

[0012] To achieve the aforementioned objective, a second aspect of the present invention provides a shield tunneling machine anchor drilling rig control system, wherein the shield tunneling machine anchor drilling rig control system includes:

[0013] The proportional multi-way valve includes a first valve, a second valve, and a third valve, which are respectively connected to the oil supply lines of the control system.

[0014] Anchor bolt drill box, which is equipped with a drill box motor and a water spraying device, and the drill box motor is connected to the first valve;

[0015] The fast / slow propulsion control valve assembly is used in the propulsion cylinder of the propulsion control system. The assembly has a first port, a second port, a third port, a fourth port, a fifth port, a first control inlet, a second control inlet, and a control outlet. Furthermore, the assembly includes a first balance valve, a second balance valve, a first shuttle valve, a hydraulically controlled check valve, a second shuttle valve, and a check valve.

[0016] The first shuttle valve's oil port one is connected to the second control inlet, the first shuttle valve's oil port two is connected to the outlet of the hydraulic check valve, and the first shuttle valve's working port is connected to the control outlet.

[0017] The inlet of the hydraulic check valve is connected to the fifth port, the first port of the second shuttle valve, and the inlet of the check valve. The control chamber of the hydraulic check valve is connected to the first control inlet.

[0018] The first oil port of the second shuttle valve is connected to the oil inlet of the check valve, the second oil port of the second shuttle valve is connected to the third oil port and the first oil port of the first balance valve, and the working port of the second shuttle valve is connected to the control chamber of the second balance valve.

[0019] The oil outlet of the one-way valve is connected to the first oil port and the second oil port of the first balance valve;

[0020] The first oil port of the first balancing valve is connected to the third oil port, the second oil port of the first balancing valve is connected to the first oil port, the control chamber of the first balancing valve is connected between the fourth oil port and the first oil port of the second balancing valve, the inlet of the check valve of the first balancing valve is connected to the first oil port of the first balancing valve, and the outlet of the check valve of the first balancing valve is connected to the second oil port of the first balancing valve.

[0021] The first oil port of the second balance valve is connected to the fourth oil port, the second oil port of the second balance valve is connected to the second oil port, the inlet of the check valve of the second balance valve is connected to the first oil port of the second balance valve, and the outlet of the check valve of the second balance valve is connected to the second oil port of the second balance valve.

[0022] Optionally, in the control system described above, the first oil port is connected to the rodless chamber of the propulsion cylinder, the second oil port is connected to the rod chamber of the propulsion cylinder, the third oil port is connected to the first oil port of the second plate valve, the fourth oil port is connected to the second oil port of the second plate valve, the second control inlet is connected to the first oil port of the third plate valve, the fifth oil port is connected to the second oil port of the third plate valve, the first control inlet is connected to the control oil circuit of the drill box motor, and the control outlet is connected to the water valve control switch of the water spraying device.

[0023] Optionally, in the control system described above, the control system further includes a wireless remote controller, which includes a controller, a display screen, and buttons. The buttons are used to remotely control the proportional electromagnets of the first, second, and third valves of the proportional multi-way valve, and the display screen is used to display the operating status of the fast / slow advance control valve group and the proportional multi-way valve.

[0024] To achieve the aforementioned objectives, a third aspect of the present invention provides an anchor drilling machine, wherein the anchor drilling machine has a control system as described in any one of the preceding second aspects.

[0025] To achieve the aforementioned objectives, a fourth aspect of the present invention provides a control method for an anchor drilling rig, wherein the control system includes:

[0026] The proportional multi-way valve includes a first valve, a second valve, and a third valve, which are respectively connected to the oil supply lines of the control system.

[0027] Anchor bolt drill box, which is equipped with a drill box motor and a water spraying device, and the drill box motor is connected to the first valve;

[0028] The fast / slow propulsion control valve assembly is used in the propulsion cylinder of the propulsion control system. The assembly has a first port, a second port, a third port, a fourth port, a fifth port, a first control inlet, a second control inlet, and a control outlet. Furthermore, the assembly includes a first balance valve, a second balance valve, a first shuttle valve, a hydraulically controlled check valve, a second shuttle valve, and a check valve.

[0029] The first shuttle valve's oil port one is connected to the second control inlet, the first shuttle valve's oil port two is connected to the outlet of the hydraulic check valve, and the first shuttle valve's working port is connected to the control outlet.

[0030] The inlet of the hydraulic check valve is connected to the fifth port, the first port of the second shuttle valve, and the inlet of the check valve. The control chamber of the hydraulic check valve is connected to the first control inlet.

[0031] The first oil port of the second shuttle valve is connected to the oil inlet of the check valve, the second oil port of the second shuttle valve is connected to the third oil port and the first oil port of the first balance valve, and the working port of the second shuttle valve is connected to the control chamber of the second balance valve.

[0032] The oil outlet of the one-way valve is connected to the first oil port and the second oil port of the first balance valve;

[0033] The first oil port of the first balancing valve is connected to the third oil port, the second oil port of the first balancing valve is connected to the first oil port, the control chamber of the first balancing valve is connected between the fourth oil port and the first oil port of the second balancing valve, the inlet of the check valve of the first balancing valve is connected to the first oil port of the first balancing valve, and the outlet of the check valve of the first balancing valve is connected to the second oil port of the first balancing valve.

[0034] The first oil port of the second balancing valve is connected to the fourth oil port, the second oil port of the second balancing valve is connected to the second oil port, the inlet of the check valve of the second balancing valve is connected to the first oil port of the second balancing valve, and the outlet of the check valve of the second balancing valve is connected to the second oil port of the second balancing valve.

[0035] Furthermore, the first oil port is connected to the rodless chamber of the propulsion cylinder, the second oil port is connected to the rod chamber of the propulsion cylinder, the third oil port is connected to the first oil port of the second plate valve, the fourth oil port is connected to the second oil port of the second plate valve, the second control inlet is connected to the first oil port of the third plate valve, the fifth oil port is connected to the second oil port of the third plate valve, the first control inlet is connected to the control oil circuit of the drill box motor, and the control outlet is connected to the water valve control switch of the water spraying device.

[0036] Optionally, in the control method described above, the rapid advance mode of the anchor drilling rig is achieved through the following steps: hydraulic oil passes through the oil port one of the second valve and enters the rodless chamber of the propulsion cylinder through the check valve of the first balance valve. At the same time, the hydraulic oil controls the opening of the second balance valve through the second shuttle valve. The hydraulic oil in the rod chamber of the propulsion cylinder flows back to the oil port two of the second valve through the second balance valve, so that the anchor drilling rig advances rapidly.

[0037] Optionally, in the control method described above, the retraction mode of the anchor drilling rig is achieved through the following steps: hydraulic oil flows into the second balance valve through the oil port of the second valve, and at the same time, the oil enters the control chamber of the first balance valve, causing the first balance valve to open. The oil in the rodless chamber of the propulsion cylinder flows back to the proportional multi-way valve through the first balance valve, causing the propulsion cylinder to retract.

[0038] Optionally, in the control method described above, the slow-speed propulsion mode of the anchor drilling rig is achieved through the following steps: hydraulic oil enters the drill box motor through port one of the first valve, causing the drill box motor to rotate. At the same time, hydraulic oil enters the hydraulic control chamber of the hydraulic control check valve, causing the hydraulic control check valve to open. Hydraulic oil enters the check valve, the second shuttle valve, and the hydraulic control check valve of the fast and slow propulsion control valve group through port two of the third valve. After passing through the check valve, the hydraulic oil enters the rodless chamber of the propulsion cylinder, enters the second shuttle valve to open the second balance valve, and the hydraulic oil in the rod chamber of the propulsion cylinder flows back through port two of the second valve of the balance valve and the proportional multi-way valve. After entering the hydraulic control check valve, it flows into the first shuttle valve and finally into the water valve control switch, causing the water valve control switch to open. Water flows into the water spraying device through the water valve control switch and is sprayed out, causing the anchor drilling rig to drill slowly and coordinating with the water supply pipeline to spray water.

[0039] Optionally, in the control method described above, when the anchor drilling rig switches to standby mode, the active water spraying function is achieved through the following steps: hydraulic oil enters the first shuttle valve and water valve control switch through the oil port of the third valve of the proportional multi-way valve, thereby opening the water valve control switch and realizing active water spraying.

[0040] By using the above-mentioned technical solution of the present invention, a control valve group with two balance valves is set up and the hydraulic oil circuit is controlled and regulated by two corresponding plate valves. This enables the anchor drilling machine to advance at two speeds, fast and slow. Furthermore, all three plate valves of the proportional multi-way valve use electromagnets, which can achieve stepless continuous speed change. This allows the anchor drilling machine to advance at different speeds with high resolution and multiple gears, preventing problems such as drill rod bending and breakage.

[0041] The anchor drilling rig is controlled by a wireless remote control, and a water spray device is installed at the drilling box of the anchor drilling rig. The water valve control switch controls the water spraying in conjunction with the anchor drilling rig or to spray water actively. This allows workers to control the anchor drilling rig from any position on the work site, and to better observe the working status of the anchor drilling rig from different angles without being splashed by water. This not only improves the efficiency of workers, but also ensures their safety and improves the working environment. Attached Figure Description

[0042] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0043] Figure 1 This is a schematic diagram of an embodiment of the control valve assembly according to the present invention;

[0044] Figure 2 A schematic diagram of an embodiment of the shield tunneling machine anchor drilling rig control system according to the present invention; and

[0045] Figure 3This is a schematic diagram of an embodiment of the wireless remote controller according to the present invention. Detailed Implementation

[0046] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the control valve group, anchor drilling rig control system, anchor drilling rig, and control method thereof according to the present invention will be described by way of example below. However, all descriptions should not be construed as limiting the present invention in any way.

[0047] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, the present invention still allows for any combination or deletion of these technical features (or their equivalents) without any technical obstacle, and thus these further embodiments according to the present invention should also be considered within the scope of this description.

[0048] It should also be noted that the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include at least one of those features.

[0049] It should also be noted that the terms "up," "down," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship of the wireless remote controller shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0050] Figure 1 This is a schematic diagram of an embodiment of the control valve assembly according to the present invention.

[0051] like Figure 1 As shown, the control valve assembly has multiple external interfaces, including a first oil port A, a second oil port B, a third oil port A1, a fourth oil port B1, a fifth oil port B2, a first control inlet C, a second control inlet A2, and a control outlet D. The figure shows that the internal components of the control valve assembly can include a first balancing valve 5, a second balancing valve 6, a first shuttle valve 1, a hydraulically controlled check valve 2, a second shuttle valve 3, and a hydraulically controlled check valve 4. By assembling this control valve assembly in an anchor drilling rig, the drill box of the anchor drilling rig can be advanced at both fast and slow speeds. It can also achieve automatic water spraying in the slow-speed advancement mode of anchor drilling and hydraulically controlled single-action water spraying in the standby mode of the anchor drilling rig.

[0052] In the illustrated embodiment, for the first shuttle valve 1, port one of the first shuttle valve 1 is connected to the second control inlet A2, port two of the first shuttle valve 1 is connected to the outlet of the hydraulic check valve 2, and the working port of the first shuttle valve 1 is connected to the control outlet D.

[0053] In the illustrated embodiment, the inlet of the hydraulic check valve 2 is connected to the fifth port B2, the first port of the second shuttle valve 3, and the inlet of the check valve 4. The outlet of the hydraulic check valve 2 is connected to the second port of the first shuttle valve 1. The control chamber of the hydraulic check valve 2 is connected to the first control inlet C.

[0054] In this illustrated embodiment, the first oil port of the second shuttle valve 3 is connected to the oil inlet of the check valve 4, the oil inlet of the hydraulic check valve 2, and the fifth oil port B2. The second oil port of the second shuttle valve 3 is connected to the third oil port A1 and the first oil port of the first balance valve 5. The working port of the second shuttle valve 3 is connected to the control chamber of the second balance valve 6.

[0055] In this illustrated embodiment, the oil outlet of the check valve 4 is connected to the first oil port A and the second oil port of the first balance valve 5, and the oil inlet of the check valve 4 is connected to the fifth oil port B2, the oil inlet of the hydraulic control check valve 2, and the first oil port of the second shuttle valve 3.

[0056] In this illustrated embodiment, the first oil port of the first balance valve 5 is connected to the third oil port A1 and the second oil port of the second shuttle valve 3. The second oil port of the first balance valve 5 is connected to the first oil port A and the outlet of the check valve 4. The control chamber of the first balance valve 5 is connected between the fourth oil port B1 and the first oil port of the second balance valve 6. The inlet of the check valve of the first balance valve 5 is connected to the first oil port of the first balance valve 5, and the outlet of the check valve of the first balance valve 5 is connected to the second oil port of the first balance valve 5.

[0057] In the illustrated embodiment, the first oil port of the second balance valve 6 is connected to the fourth oil port B1 and the control chamber of the first balance valve 5; the second oil port of the second balance valve 6 is connected to the second oil port B; the inlet of the check valve of the second balance valve 6 is connected to the first oil port of the second balance valve 6; and the outlet of the check valve of the second balance valve 6 is connected to the second oil port of the second balance valve 6.

[0058] In the control valve group set as described above, the first shuttle valve 1 and the second shuttle valve 3 act as oil circuit switches. The hydraulic control check valve 2 can be opened by the control oil circuit from the first control inlet C, and prevents hydraulic oil backflow and maintains oil circuit pressure. The check valve 4 can prevent hydraulic oil backflow. The first balance valve 5 and the second balance valve 6 can achieve flow balance by adjusting the relative balance of pressure on both sides and by diverting flow.

[0059] The aforementioned control valve assembly, by setting two balancing valves and configuring two corresponding plate valves, enables the anchor drilling rig to advance at both fast and slow speeds. The fast-speed valve is used when empty-push the drill box and changing drill rods and drill bits, while the slow-speed valve is used when the drill box is drilling into the drill rod. This increases the fast-speed advance speed while improving the resolution, efficiency, and stability of the slow-speed advance.

[0060] In an alternative embodiment, the first balancing valve 5 and the second balancing valve 6 can be replaced with a hydraulically controlled check valve with a relatively simple structure to reduce costs.

[0061] Figure 2 This is a schematic diagram of an embodiment of the shield tunneling machine anchor drilling rig control system according to the present invention.

[0062] like Figure 2 As shown in the figure, in this embodiment, the anchor drilling rig control system may include a proportional multi-way valve 11, a fast / slow advance control valve group, an advance cylinder 10, and an anchor drilling box. As can be seen from the figure, the proportional multi-way valve 11 may include a first valve, a second valve, and a third valve from left to right. These three valves are respectively connected to the oil supply lines of the control system. The function of the proportional multi-way valve 11 is to control the anchor drilling rig through hydraulic logic, achieving stepless adjustment (i.e., continuous adjustment) of the various action speeds of the anchor drilling rig. The proportional multi-way valve 11 can also be connected and controlled by a wireless remote controller; specific implementation details will be provided later.

[0063] In this embodiment, a drill box motor 9 and a water spraying device are provided at the anchor drill box. The drill box motor 9 is connected to the first valve. In the slow advance mode of the anchor drill, the water spraying device can realize the linkage water spraying function. In the standby mode of the anchor drill, the water spraying device can realize the active water spraying function.

[0064] The fast and slow propulsion control valve assembly is used in the propulsion cylinder 10 of the propulsion control system.

[0065] from Figure 2 As can be seen, the fast / slow propulsion control valve assembly has a first oil port A, a second oil port B, a third oil port A1, a fourth oil port B1, a fifth oil port B2, a first control inlet C, a second control inlet A2, and a control outlet D. Furthermore, the fast / slow propulsion control valve assembly includes a first balancing valve 5, a second balancing valve 6, a first shuttle valve 1, a hydraulically controlled check valve 2, a second shuttle valve 3, and a check valve 4. Regarding the connection relationships of the internal components of the fast propulsion control valve assembly—the first balancing valve 5, the second balancing valve 6, the first shuttle valve 1, the hydraulically controlled check valve 2, the second shuttle valve 3, and the check valve 4—and the external interfaces—the first oil port A, the second oil port B, the third oil port A1, the fourth oil port B1, the fifth oil port B2, the first control inlet C, the second control inlet A2, and the control outlet D—please refer to the preceding text. Figure 1 The description.

[0066] In such Figure 2 In the bolt drilling rig control system of the illustrated embodiment, the first oil port A is connected to the rodless chamber of the propulsion cylinder 10, the second oil port B is connected to the rod chamber of the propulsion cylinder 10, the third oil port A1 is connected to the first oil port of the second plate valve, the fourth oil port B1 is connected to the second oil port of the second plate valve, the second control inlet A2 is connected to the first oil port of the third plate valve, the fifth oil port B2 is connected to the second oil port of the third plate valve, the first control inlet C is connected to the control oil circuit of the drill box motor 9, and the control outlet D is connected to the water valve control switch 7 of the water spraying device. The figure exemplifies two propulsion cylinders 10; in other embodiments, there may be one or more propulsion cylinders.

[0067] In an optional embodiment, the valve cores of the first, second, and third valves are selected from electromagnets.

[0068] In the control valve group set as described above, the first shuttle valve 1 and the second shuttle valve 3 act as oil circuit switches. The hydraulic control check valve 2 can be controlled to open the oil circuit, prevent hydraulic oil backflow and maintain oil circuit pressure. The check valve 4 can prevent hydraulic oil backflow. The first balance valve 5 and the second balance valve 6 can achieve flow balance by adjusting the relative balance of pressure on both sides and by diverting the flow.

[0069] In addition, the fast / slow advance control valve group is used in the advance control system's advance cylinder 10. The drill box motor 9 can rotate the drill rod, and the advance cylinder 10 can advance and retract the drill rod. The drill box motor 9 and the advance cylinder 10 work together to realize the drilling of the drill rod. The water spraying device can spray water to reduce dust and cool the anchor drilling rig. The proportional multi-way valve 11 can control the hydraulic oil to drive various components through the switching action of the first, second, and third valves, further controlling the various actions of the anchor drilling rig.

[0070] In an optional embodiment, a pressure sensor can be installed in the oil circuit of the proportional multi-way valve to detect the oil circuit pressure value and further monitor the working status of the anchor drilling rig.

[0071] The shield machine anchor drilling rig control system configured as described above can realize the rapid advancement, slow advancement, and retraction of the propulsion cylinder of the anchor drilling rig. The rapid advancement, slow advancement, and retraction of the propulsion cylinder of the anchor drilling rig will be described in detail later.

[0072] Figure 3 This is a schematic diagram of an embodiment of the wireless remote controller according to the present invention.

[0073] from Figure 3As can be seen, the remote control has a display screen 13 on the upper left and buttons 12 distributed below and to the right of the display screen 13. An antenna can be installed on the top of the remote control for sending control commands to the anchor drilling rig. The display screen 13 is used to display the working status of the fast and slow advance control valve group and the proportional multi-way valve 11. The buttons 12 can remotely control the proportional electromagnets of the first, second, and third valves of the proportional multi-way valve 11, enabling the wireless remote control to remotely connect to and control the proportional multi-way valve 11, and realize stepless adjustment of the speed of each action of the anchor drilling rig.

[0074] The present invention provides an anchor drilling rig, which includes the anchor drilling rig control system as described above; further, the present invention also provides an anchor drilling rig control method.

[0075] The anchor drilling rig can have a control system, which may include a proportional multi-way valve 11, an anchor drilling box, and a fast / slow advance control valve group. The proportional multi-way valve 11 includes a first valve, a second valve, and a third valve, which are respectively connected to the oil supply lines of the control system. A drill box motor 9 and a water spray device are installed at the anchor drilling box, and the drill box motor 9 is connected to the first valve. The fast / slow advance control valve group is used to advance the advance cylinder 10 of the control system. The fast / slow advance control valve group has a first oil port A, a second oil port B, a third oil port A1, a fourth oil port B1, a fifth oil port B2, a first control inlet C, and a second control inlet C. The system has an inlet A2 and a control outlet D. The fast / slow propulsion control valve group includes a first balancing valve 5, a second balancing valve 6, a first shuttle valve 1, a hydraulically controlled check valve 2, a second shuttle valve 3, and a check valve 4. Specifically: port 1 of the first shuttle valve 1 is connected to the second control inlet A2; port 2 of the first shuttle valve 1 is connected to the outlet of the hydraulically controlled check valve 2; the working port of the first shuttle valve 1 is connected to the control outlet D; the inlet of the hydraulically controlled check valve 2 is connected to the fifth port B2, port 1 of the second shuttle valve 3, and the inlet of the check valve 4; the control chamber of the hydraulically controlled check valve 2 is connected to the first control inlet C; port 1 of the second shuttle valve 3 is connected to the inlet of the check valve 4; and port 2 of the second shuttle valve 3 is connected to the first control outlet D. The first oil port (A1) of the first balancing valve 5 and the working port of the second shuttle valve 3 are connected to the control chamber of the second balancing valve 6. The outlet of the check valve 4 is connected to the first oil port (A1) and the second oil port (B1) of the first balancing valve 5. The first oil port (A1) of the first balancing valve 5 is connected to the third oil port (A1), and the second oil port (B2) of the first balancing valve 5 is connected to the first oil port (A1). The control chamber of the first balancing valve 5 is connected between the fourth oil port (B1) and the first oil port (B1) of the second balancing valve 6. The inlet of the check valve of the first balancing valve 5 is connected to the first oil port (B1), and the outlet of the check valve of the first balancing valve 5 is connected to the second oil port (B2). The first oil port (B1) of the second balancing valve 6 is connected to the fourth oil port (B1). The oil port 2 is connected to the second oil port B. The oil inlet of the one-way valve of the second balance valve 6 is connected to the oil port 1 of the second balance valve 6. The oil outlet of the one-way valve of the second balance valve 6 is connected to the oil port 2 of the second balance valve 6. Furthermore, the first oil port A is connected to the rodless chamber of the propulsion cylinder 10, the second oil port B is connected to the rod chamber of the propulsion cylinder 10, the third oil port A1 is connected to the oil port 1 of the second plate valve, the fourth oil port B1 is connected to the oil port 2 of the second plate valve, the second control inlet A2 is connected to the oil port 1 of the third plate valve, the fifth oil port B2 is connected to the oil port 2 of the third plate valve, the first control inlet C is connected to the control oil circuit of the drill box motor 9, and the control outlet D is connected to the water valve control switch 7 of the water spraying device.

[0076] In the anchor drilling rig control system configured as described above, the first shuttle valve 1 and the second shuttle valve 3 act as oil circuit switches. The hydraulic control check valve 2 can be controlled to open the oil circuit, prevent hydraulic oil backflow, and maintain oil circuit pressure. The check valve 4 can prevent hydraulic oil backflow. The first balance valve 5 and the second balance valve 6 can achieve flow balance by adjusting the relative balance of pressure on both sides and by diverting flow.

[0077] According to this embodiment, the proportional multi-way valve 11 controls the anchor drilling rig, enabling both stepless adjustment of the speed of each action of the anchor drilling rig and connection and control by a wireless remote controller. Figure 3 As shown, the wireless remote control may include components such as a controller, a display screen, and buttons. Specifically, the proportional electromagnets of the first, second, and third valves of the multi-way valve 11 can be remotely controlled via button 12 on the remote control. The display screen 13 is used to display the operating status of multiple valves and the detection values ​​of the pressure sensor 8. The fast and slow propulsion control valve group can realize two-speed propulsion functions for the drill box, automatic linkage water spraying, and hydraulically controlled single-action water spraying.

[0078] The anchor drilling rig control method based on the above control system may include a fast advance mode, a retraction mode, a slow advance mode, and a standby mode. The switching of the above modes can be achieved by switching the oil circuit channels of the first valve, the second valve, and / or the third valve in the proportional multi-way valve.

[0079] The rapid advance mode of the anchor drilling rig can be achieved through the following steps: hydraulic oil enters the rodless chamber of the propulsion cylinder 10 through the oil port one of the second valve and the one-way valve of the first balance valve 5. At the same time, the hydraulic oil controls the opening of the second balance valve 6 through the second shuttle valve 3. The hydraulic oil in the rod chamber of the propulsion cylinder 10 flows back to the oil port two of the second valve through the second balance valve 6, so that the anchor drilling rig advances rapidly.

[0080] When workers have installed the drill rods and are controlling the anchor drilling machine to push the drill rods to the tunnel face, or in order to add and push new drill rods to the end of the drill rods, the anchor drilling machine can be controlled by a wireless remote control to advance quickly, thereby improving work efficiency.

[0081] The retraction mode of the anchor drilling rig can be achieved through the following steps: hydraulic oil flows into the second balance valve 6 through the oil port of the second valve, and at the same time, the oil enters the control chamber of the first balance valve 5, causing the first balance valve 5 to open. The oil in the rodless chamber of the propulsion cylinder 10 flows back to the proportional multi-way valve 11 through the first balance valve 5, causing the propulsion cylinder 10 to retract.

[0082] After the workers have completed the drilling of the drill rod on the working face, or when it is necessary to retract the drill rod to check for bending during the drilling process, the drilling rig's hydraulic cylinder 10 can be retracted using a wireless remote control.

[0083] The slow-speed propulsion mode of the anchor drilling rig can be achieved through the following steps: Hydraulic oil enters the drill box motor 9 through port one of the first valve, causing the drill box motor 9 to rotate. Simultaneously, hydraulic oil enters the hydraulic control chamber of the hydraulic control check valve 2, opening the hydraulic control check valve 2. Hydraulic oil then enters the check valve 4, the second shuttle valve 3, and the hydraulic control check valve 2 of the fast / slow propulsion control valve group through port two of the third valve. After passing through check valve 4, the hydraulic oil enters the rodless chamber of the propulsion cylinder 10, causing the cylinder to extend outwards. It then enters the second shuttle valve 3, opening the second balance valve 6. Hydraulic oil in the rod chamber of the propulsion cylinder 10 flows back through port two of the second valve of the balance valve 6 and the proportional multi-way valve 11, entering the hydraulic control check valve 2 and flowing into the first shuttle valve 1. Finally, it flows into the water valve control switch 7, opening the water valve control switch 7. Water then flows through the water valve control switch 7 and into the water spraying device, enabling the anchor drilling rig to perform slow drilling and synchronize with the water supply pipeline for water spraying.

[0084] When the workers are controlling the anchor drilling rig to drill, they can use a wireless remote control to switch the anchor drilling rig to slow advance mode. In slow advance mode, the advance speed can be further continuously adjusted steplessly, so that the workers can judge and adjust the appropriate advance speed in time according to the advance resistance of the drill rod, and prevent the drill rod from bending or breaking due to the hardness of the rock layer during drilling.

[0085] Meanwhile, in slow-speed propulsion mode, the hydraulic control logic opens the water valve control switch in the water supply pipeline, enabling the water spraying device to spray water in conjunction with the machine. This reduces dust and cools the anchor drilling rig. Remote control via wireless remote allows operators to control the anchor drilling rig from any location outside the rig, preventing water from splashing onto them and improving the working environment.

[0086] When the anchor drilling rig switches to standby mode, the active water spraying function can be achieved through the following steps: hydraulic oil enters the first shuttle valve 1 and water valve control switch 7 through the oil port of the third valve of the proportional multi-way valve 11, so that the water valve control switch 7 is opened, and active water spraying can be achieved.

[0087] When the anchor drilling rig is in standby mode, workers can also use a wireless remote control to turn on the water valve and use the water spray device to clean objects or for other purposes.

[0088] The present invention achieves the following functions: (1) It adopts a dual proportional valve to control the propulsion speed and realizes the separation of fast and slow propulsion. The fast propulsion valve is used when the drill box is empty and when the drill rod and drill bit are changed. The slow propulsion valve is used when the drill box is drilling into the drill rod. This increases the fast propulsion speed and improves the resolution, efficiency and stability of the slow propulsion. (2) It realizes the automatic linkage water spraying function. The water spraying switch is controlled by two hydraulic control methods. The first method meets the two conditions of the drill box rotation and the propulsion push-out, and the water spraying switch is automatically opened. The other method is to open the water spraying switch when the worker needs water. This design effectively controls the water supply. When drilling, the system sprays water automatically, saving the worker from manually controlling the ball valve switch. When not drilling, the worker can actively control the water supply valve to open when water is needed. (3) It adopts a wireless remote control to control all the actions of the anchor bolt machine, so that the worker's working position can be moved. This effectively solved two problems: first, it prevented workers from getting wet during the drilling rig's advancement, thus improving their working environment; second, it provided workers with a wider field of vision and a greater range of movement, avoiding limitations and erroneous actions caused by fixed positions, thereby improving worker safety.

[0089] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A control valve group, characterized by, The control valve assembly has a first oil port (A), a second oil port (B), a third oil port (A1), a fourth oil port (B1), a fifth oil port (B2), a first control inlet (C), a second control inlet (A2), and a control outlet (D). Furthermore, the control valve assembly includes a first balancing valve (5), a second balancing valve (6), a first shuttle valve (1), a hydraulically controlled check valve (2), a second shuttle valve (3), and a check valve (4), wherein: The first port of the first shuttle valve (1) is connected to the second control inlet (A2), the second port of the first shuttle valve (1) is connected to the outlet of the hydraulic check valve (2), and the working port of the first shuttle valve (1) is connected to the control outlet (D). The inlet of the hydraulic check valve (2) is connected to the fifth oil port (B2), the oil port of the second shuttle valve (3) and the inlet of the check valve (4), and the control chamber of the hydraulic check valve (2) is connected to the first control inlet (C). The first oil port of the second shuttle valve (3) is connected to the oil inlet of the check valve (4), the second oil port of the second shuttle valve (3) is connected to the third oil port (A1) and the first oil port of the first balance valve (5), and the working port of the second shuttle valve (3) is connected to the control chamber of the second balance valve (6). The oil outlet of the one-way valve (4) is connected to the first oil port (A) and the second oil port of the first balance valve (5); The first oil port of the first balance valve (5) is connected to the third oil port (A1), the second oil port of the first balance valve (5) is connected to the first oil port (A), the control chamber of the first balance valve (5) is connected between the fourth oil port (B1) and the first oil port of the second balance valve (6), the inlet of the check valve of the first balance valve (5) is connected to the first oil port of the first balance valve (5), and the outlet of the check valve of the first balance valve (5) is connected to the second oil port of the first balance valve (5). The first oil port of the second balance valve (6) is connected to the fourth oil port (B1), the second oil port of the second balance valve (6) is connected to the second oil port (B), the inlet of the check valve of the second balance valve (6) is connected to the first oil port of the second balance valve (6), and the outlet of the check valve of the second balance valve (6) is connected to the second oil port of the second balance valve (6). Wherein, the first oil port (A) is used to connect to the rodless chamber of the propulsion cylinder (10), the third oil port (A1) is used to connect to the first oil port of the second plate valve in the proportional multi-way valve (11), the second oil port (B) is used to connect to the rod chamber of the propulsion cylinder (10), the fourth oil port (B1) is used to connect to the second oil port of the second plate valve in the proportional multi-way valve (11), the hydraulic control check valve (2) is used to be opened by the control oil circuit from the first control inlet (C), and the fifth oil port (B2) is used to connect to the second oil port of the third plate valve in the proportional multi-way valve (11); The first balance valve (5), the second balance valve (6) and the proportional multi-way valve (11) are used to achieve fast and slow propulsion speeds, and the proportional multi-way valve (11) is used to achieve stepless adjustment of propulsion speed.

2. A shield machine anchor drill control system, characterized in that, The control system includes: A proportional multi-way valve (11) includes a first valve, a second valve and a third valve, wherein the first valve, the second valve and the third valve are respectively connected to the oil supply line of the control system; An anchor bolt drill box, wherein a drill box motor (9) and a water spraying device are provided at the anchor bolt drill box, and the drill box motor (9) is connected to the first plate valve; A fast / slow propulsion control valve assembly is used to propel the propulsion cylinder (10) of the control system. The fast / slow propulsion control valve assembly has a first oil port (A), a second oil port (B), a third oil port (A1), a fourth oil port (B1), a fifth oil port (B2), a first control inlet (C), a second control inlet (A2), and a control outlet (D). Furthermore, the fast / slow propulsion control valve assembly includes a first balance valve (5), a second balance valve (6), a first shuttle valve (1), a hydraulically controlled check valve (2), a second shuttle valve (3), and a check valve (4), wherein: The first port of the first shuttle valve (1) is connected to the second control inlet (A2), the second port of the first shuttle valve (1) is connected to the outlet of the hydraulic check valve (2), and the working port of the first shuttle valve (1) is connected to the control outlet (D). The inlet of the hydraulic check valve (2) is connected to the fifth oil port (B2), the oil port of the second shuttle valve (3) and the inlet of the check valve (4), and the control chamber of the hydraulic check valve (2) is connected to the first control inlet (C). The first oil port of the second shuttle valve (3) is connected to the oil inlet of the check valve (4), the second oil port of the second shuttle valve (3) is connected to the third oil port (A1) and the first oil port of the first balance valve (5), and the working port of the second shuttle valve (3) is connected to the control chamber of the second balance valve (6). The oil outlet of the one-way valve (4) is connected to the first oil port (A) and the second oil port of the first balance valve (5); The first oil port of the first balance valve (5) is connected to the third oil port (A1), the second oil port of the first balance valve (5) is connected to the first oil port (A), the control chamber of the first balance valve (5) is connected between the fourth oil port (B1) and the first oil port of the second balance valve (6), the inlet of the check valve of the first balance valve (5) is connected to the first oil port of the first balance valve (5), and the outlet of the check valve of the first balance valve (5) is connected to the second oil port of the first balance valve (5). The first oil port of the second balance valve (6) is connected to the fourth oil port (B1), the second oil port of the second balance valve (6) is connected to the second oil port (B), the inlet of the check valve of the second balance valve (6) is connected to the first oil port of the second balance valve (6), and the outlet of the check valve of the second balance valve (6) is connected to the second oil port of the second balance valve (6). Wherein, the first oil port (A) is used to connect to the rodless chamber of the propulsion cylinder (10), the third oil port (A1) is used to connect to the first oil port of the second plate valve in the proportional multi-way valve (11), the second oil port (B) is used to connect to the rod chamber of the propulsion cylinder (10), the fourth oil port (B1) is used to connect to the second oil port of the second plate valve in the proportional multi-way valve (11), the hydraulic control check valve (2) is used to be opened by the control oil circuit from the first control inlet (C), and the fifth oil port (B2) is used to connect to the second oil port of the third plate valve in the proportional multi-way valve (11); The first balance valve (5), the second balance valve (6) and the proportional multi-way valve (11) are used to achieve fast and slow propulsion speeds, and the proportional multi-way valve (11) is used to achieve stepless adjustment of propulsion speed.

3. The control system of claim 2, wherein, The first oil port (A) is connected to the rodless chamber of the propulsion cylinder (10), the second oil port (B) is connected to the rod chamber of the propulsion cylinder (10), the third oil port (A1) is connected to the first oil port of the second plate valve, the fourth oil port (B1) is connected to the second oil port of the second plate valve, the second control inlet (A2) is connected to the first oil port of the third plate valve, the fifth oil port (B2) is connected to the second oil port of the third plate valve, the first control inlet (C) is connected to the control oil circuit of the drill box motor (9), and the control outlet (D) is connected to the water valve control switch (7) of the water spraying device.

4. The control system of claim 2, wherein, The control system also includes a wireless remote controller, which includes a controller, a display screen (13), and buttons (12). The buttons (12) are used to remotely control the proportional electromagnets of the first, second, and third valves of the proportional multi-way valve (11). The display screen (13) is used to display the working status of the fast and slow propulsion control valve group and the proportional multi-way valve (11).

5. A roof bolter characterised in that, The anchor drilling rig has a control system as described in any one of claims 2 to 4.

6. A control method for a rod drill, characterized in that, The anchor drilling rig has a control system, which includes: A proportional multi-way valve (11) includes a first valve, a second valve and a third valve, wherein the first valve, the second valve and the third valve are respectively connected to the oil supply line of the control system; An anchor bolt drill box, wherein a drill box motor (9) and a water spraying device are provided at the anchor bolt drill box, and the drill box motor (9) is connected to the first plate valve; A fast / slow propulsion control valve assembly is used to propel the propulsion cylinder (10) of the control system. The fast / slow propulsion control valve assembly has a first oil port (A), a second oil port (B), a third oil port (A1), a fourth oil port (B1), a fifth oil port (B2), a first control inlet (C), a second control inlet (A2), and a control outlet (D). Furthermore, the fast / slow propulsion control valve assembly includes a first balance valve (5), a second balance valve (6), a first shuttle valve (1), a hydraulically controlled check valve (2), a second shuttle valve (3), and a check valve (4), wherein: The first port of the first shuttle valve (1) is connected to the second control inlet (A2), the second port of the first shuttle valve (1) is connected to the outlet of the hydraulic check valve (2), and the working port of the first shuttle valve (1) is connected to the control outlet (D). The inlet of the hydraulic check valve (2) is connected to the fifth oil port (B2), the oil port of the second shuttle valve (3) and the inlet of the check valve (4), and the control chamber of the hydraulic check valve (2) is connected to the first control inlet (C). The first oil port of the second shuttle valve (3) is connected to the oil inlet of the check valve (4), the second oil port of the second shuttle valve (3) is connected to the third oil port (A1) and the first oil port of the first balance valve (5), and the working port of the second shuttle valve (3) is connected to the control chamber of the second balance valve (6). The oil outlet of the one-way valve (4) is connected to the first oil port (A) and the second oil port of the first balance valve (5); The first oil port of the first balance valve (5) is connected to the third oil port (A1), the second oil port of the first balance valve (5) is connected to the first oil port (A), the control chamber of the first balance valve (5) is connected between the fourth oil port (B1) and the first oil port of the second balance valve (6), the inlet of the check valve of the first balance valve (5) is connected to the first oil port of the first balance valve (5), and the outlet of the check valve of the first balance valve (5) is connected to the second oil port of the first balance valve (5). The first oil port of the second balance valve (6) is connected to the fourth oil port (B1), the second oil port of the second balance valve (6) is connected to the second oil port (B), the inlet of the check valve of the second balance valve (6) is connected to the first oil port of the second balance valve (6), and the outlet of the check valve of the second balance valve (6) is connected to the second oil port of the second balance valve (6). Furthermore, the first oil port (A) is connected to the rodless chamber of the propulsion cylinder (10), the second oil port (B) is connected to the rod chamber of the propulsion cylinder (10), the third oil port (A1) is connected to the first oil port of the second plate valve, the fourth oil port (B1) is connected to the second oil port of the second plate valve, the second control inlet (A2) is connected to the first oil port of the third plate valve, the fifth oil port (B2) is connected to the second oil port of the third plate valve, the first control inlet (C) is connected to the control oil circuit of the drill box motor (9), and the control outlet (D) is connected to the water valve control switch (7) of the water spraying device. The hydraulic check valve (2) is used to be opened by the control oil circuit from the first control inlet (C), the first balance valve (5), the second balance valve (6) and the proportional multi-way valve (11) are used to realize fast and slow propulsion speeds, and the proportional multi-way valve (11) is used to realize stepless adjustment of propulsion speed.

7. The method of claim 6, wherein, The rapid advance mode of the anchor drilling rig is achieved through the following steps: hydraulic oil passes through the oil port one of the second valve and enters the rodless chamber of the propulsion cylinder (10) through the one-way valve of the first balance valve (5). At the same time, the hydraulic oil controls the opening of the second balance valve (6) through the second shuttle valve (3). The hydraulic oil in the rod chamber of the propulsion cylinder (10) flows back to the oil port two of the second valve through the second balance valve (6), so that the anchor drilling rig advances rapidly.

8. The method of claim 6, wherein, The retraction mode of the anchor drilling rig is achieved through the following steps: the hydraulic oil flows into the second balance valve (6) through the oil port of the second valve, and the oil simultaneously enters the control chamber of the first balance valve (5), causing the first balance valve (5) to open. The oil in the rodless chamber of the propulsion cylinder (10) flows back to the proportional multi-way valve (11) through the first balance valve (5), causing the propulsion cylinder (10) to retract.

9. The method of claim 6, wherein, The slow propulsion mode of the anchor drilling rig is achieved through the following steps: the hydraulic oil enters the drill box motor (9) through the oil port one of the first valve, causing the drill box motor (9) to rotate. At the same time, the hydraulic oil enters the hydraulic control chamber of the hydraulic control check valve (2), causing the hydraulic control check valve (2) to open. The hydraulic oil enters the check valve (4), the second shuttle valve (3) and the hydraulic control check valve (2) of the fast and slow propulsion control valve group through the oil port two of the third valve. After passing through the check valve (4), the hydraulic oil enters the propulsion cylinder (10). The rodless chamber enters the second shuttle valve (3), opens the second balance valve (6), and propels the oil cylinder (10). The hydraulic oil in the rod chamber flows back through the oil port of the second valve of the balance valve (6) and the proportional multi-way valve (11), enters the hydraulic control check valve (2), and then flows into the first shuttle valve (1). Finally, it flows into the water valve control switch (7), which opens the water valve control switch (7). Water flows through the water valve control switch (7) into the water spraying device and sprays out, causing the anchor drilling machine to drill slowly and spray water in conjunction with the water supply pipeline.

10. The method of claim 6, wherein, When the anchor drilling rig switches to standby mode, the active water spraying function is realized through the following steps: the hydraulic oil enters the first shuttle valve (1) and the water valve control switch (7) through the oil port of the third valve of the proportional multi-way valve (11), so that the water valve control switch (7) is opened to realize active water spraying.

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