Anchor bolter multi-mode hydraulic control system and anchor bolter

Abstract

The present invention relates to the field of hydraulic control technology, and specifically to a multi-mode hydraulic control system for an anchor bolter and an anchor bolter, comprising: a switching valve group, including a third reversing valve, a speed regulating valve, a first reversing valve, a first overflow valve, a second reversing valve, a first oil inlet, a first oil port, a second oil port and a third oil port; a multi-way valve, including a first valve, a second valve and an oil inlet, the first valve including a fourth oil port and a fifth oil port, the fourth oil port is connected to the first oil inlet of the switching valve group, and the fifth oil port is connected to the anchor bolter motor; the second valve is connected to the anchor bolter motor propulsion cylinder, and is used to control the operation of the anchor bolter motor propulsion cylinder; a hydraulic pump, the outlet of the hydraulic pump is connected to the oil inlet of the multi-way valve through a high-pressure pipeline. The present invention can arbitrarily adjust and change the speed and torque under different working conditions without adjusting the main control valve, and can be applicable to operations such as anchor holes and pressure relief holes under semi-coal rock and hard rock geological conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic control, and in particular to a multi-mode hydraulic control system for an anchor bolter and an anchor bolter. Background Art

[0002] At present, during the drilling process, the bolter usually uses a fixed motor to drive the drill rod to rotate, and uses the bolter motor to push the oil cylinder to extend to perform bolt hole operations. When the flow and pressure that control the rotation of the bolter motor are set values, the maximum speed and maximum torque of the bolter motor are fixed values. Without adjusting the hydraulic system, the bolter can only be used for bolt hole operations. However, the actual underground geological conditions are complex and changeable, such as the alternation or mixing of semi-coal rock and hard rock. At the same time, in order to reduce the labor intensity of underground workers, it is required that one machine be used for multiple purposes, with the functions of drilling pressure relief holes, cutting top holes, gas detection and water detection holes. Due to the limitations of speed and torque, the bolter controlled by the conventional hydraulic system can only be used for coal rock bolt hole operations, and cannot adapt to other operating environments such as pressure relief holes and cutting top holes.

[0003] To solve the above problems, a speed regulating reversing valve group can be added to the inlet of the multi-way valve, but this solution is only used for the conditions of the anchor arm micro-motion to find the position and the initial micro-motion drilling. In addition, since the multi-way valve adopts the pre-valve compensation form, when the remote control multi-way valve has a certain opening, flow saturation will occur, and the mechanism with high pressure will stop moving. Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and proposes to design a multi-mode hydraulic control system for an anchor bolter, which realizes the switching of the anchor bolter between high speed and low torque and low speed and high torque without adjusting the main control valve, and can arbitrarily adjust the speed and torque under different working conditions.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A multi-mode hydraulic control system for an anchor bolter, comprising:

[0007] The switching valve group includes a third reversing valve, a speed regulating valve, a first reversing valve, a first relief valve, a second reversing valve, a first oil inlet, a first oil port, a second oil port and a third oil port; the first reversing valve is connected to the first oil port through the speed regulating valve, the first reversing valve is also directly connected to the first oil port through an internal flow channel, and the first reversing valve is also connected to the first oil port through a one-way valve; the third reversing valve is connected to the pilot control port of the second reversing valve and the pilot control port of the first reversing valve; the two oil ports of the first relief valve are respectively connected to the third reversing valve and the second reversing valve; the first oil inlet is connected to the first reversing valve; the first oil port is connected to the M1 oil port of the bolting machine motor for controlling the forward rotation of the bolting machine motor; the second oil port and the third oil port are both connected to the multi-way valve;

[0008] The multi-way valve comprises a first valve, a second valve and an oil inlet, wherein the first valve comprises a fourth oil inlet and a fifth oil inlet, wherein the fourth oil inlet is connected to the first oil inlet of the switching valve group, and the fifth oil inlet is connected to the M2 oil inlet of the bolting machine motor, for controlling the reversal of the bolting machine motor; the second valve is connected to the bolting machine motor propulsion cylinder, for controlling the operation of the bolting machine motor propulsion cylinder;

[0009] A hydraulic pump, the outlet of which is connected to the oil inlet of the multi-way valve through a high-pressure pipeline.

[0010] Furthermore, the first valve also includes a third overflow valve, the overflow oil port of the third overflow valve is respectively connected to the first oil inlet and the second oil port of the switching valve group; the second oil port is connected to the second reversing valve.

[0011] Furthermore, the second valve includes a sixth oil port and a seventh oil port, and the two oil ports of the anchor bolt machine motor propulsion cylinder are respectively connected to the sixth oil port and the seventh oil port.

[0012] Furthermore, the second valve also includes a fourth overflow valve, the switching valve group also includes a second overflow valve, and the overflow oil port of the fourth overflow valve is connected to the second overflow valve and the sixth oil port respectively. The first overflow valve and the second overflow valve are connected to the return oil port of the third reversing valve.

[0013] Furthermore, the switching valve group also includes a second oil inlet, and the second oil inlet can be externally connected to a pressure flow source to meet the higher required speed of the bolter motor.

[0014] Furthermore, the hydraulic pump is connected to the motor via a coupling.

[0015] Furthermore, the third reversing valve is controlled manually or electrically.

[0016] Furthermore, the first reversing valve and the second reversing valve are hydraulically controlled reversing valves or electromagnetic reversing valves.

[0017] Technical effects of the present invention:

[0018] Compared with the prior art, the multi-mode hydraulic control system of the bolter of the present invention can realize the switching of the bolter between high speed and low torque and low speed and high torque without adjusting the main control valve, or arbitrarily adjust the speed and torque under different working conditions, thus realizing one machine for multiple uses and being able to fully adapt to the bolt hole, pressure relief hole, top cutting hole, gas detection and water detection hole operations under semi-coal rock and hard rock geological conditions. The present invention can flexibly adjust the working state according to different working conditions, greatly improve the working efficiency of the bolt operation, reduce the production cost, and is simple and reliable to use, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structural principle of the multi-mode hydraulic control system of the anchor bolter of the present invention.

[0020] In the figure, 1, motor; 2, coupling; 3, hydraulic pump; 4, multi-way valve; 5, switching valve group; 6, bolter motor; 7, bolter motor propulsion cylinder;

[0021] 41, first valve; 42, second valve; 411, third overflow valve; 421, fourth overflow valve;

[0022] 51. third reversing valve; 52. one-way valve; 53. speed regulating valve; 54. first reversing valve; 55. first overflow valve; 56. second overflow valve; 57. second reversing valve; 58. internal flow channel;

[0023] A, first oil port; P, oil inlet; A1, fourth oil port; B1, fifth oil port; A2, sixth oil port; B2, seventh oil port; P1, first oil inlet; P2, second oil inlet; X1, second oil port; X2, third oil port; X3, eighth oil port. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention is clearly and completely described below in conjunction with the accompanying drawings.

[0025] Embodiment 1:

[0026] like Figure 1 As shown, the embodiment involves a multi-mode hydraulic control system for an anchor bolter, comprising a motor 1, a hydraulic pump 3, a multi-way valve 4, a switching valve group 5 and an anchor bolter motor 6. The hydraulic pump 3 is connected to the motor 1 through a coupling 2, and the outlet of the hydraulic pump 3 is connected to the oil inlet P of the multi-way valve 4 through a high-pressure pipeline.

[0027] The switching valve group 5 includes a third reversing valve 51, a speed regulating valve 53, a first reversing valve 54, a first overflow valve 55, a second overflow valve 56, a second reversing valve 57, a first oil inlet P1, a first oil port A, a second oil port X1, a third oil port X2, an eighth oil port X3 and a second oil inlet P2.

[0028] The first reversing valve 54 and the second reversing valve 57 are two-position three-way reversing valves, and the third reversing valve 51 is a two-position three-way reversing valve or a two-position four-way reversing valve.

[0029] The first reversing valve 54 is connected to the first oil port A through the speed regulating valve 53, and the first reversing valve 54 is also directly connected to the first oil port A through the internal flow channel 58. The first reversing valve 54 is also connected to the first oil port A through the one-way valve 52; the third reversing valve 51 is manually or electrically controlled and connected to the pilot control port of the second reversing valve 57 and the pilot control port of the first reversing valve 54; the two oil ports of the first overflow valve 55 are respectively connected to the third reversing valve 51 and the second reversing valve 57; the first oil inlet P1 is connected to the first The reversing valve 54 is connected; the first oil port A is connected to the M1 oil port of the bolter motor 6, which is used to control the forward rotation of the bolter motor 6; the fifth oil port B1 of the multi-way valve 41 is connected to the M2 oil port of the bolter motor 6, which is used to control the reverse rotation of the bolter motor 6, and the return oil M1 port of the bolter motor 6 is connected to the first oil port A of the switching valve group 5 through a pipeline, and the first oil port A is connected to the first reversing valve 54 through a one-way valve 52, and the first reversing valve 54 is connected to the first oil port A, and the first oil port A is connected to the A port of the multi-way valve 41 through a pipeline. The second oil port X1 and the third oil port X2 are both connected to the multi-way valve 4; the second oil inlet P2 can be connected to an external pressure flow source to meet the higher required speed of the bolter motor 6.

[0030] The multi-way valve 4 includes a first valve 41, a second valve 42 and an oil inlet P. The first valve 41 includes a fourth oil port A1 and a fifth oil port B1, the fourth oil port A1 is connected to the first oil inlet P1 of the switching valve group 5, and the fifth oil port B1 is connected to the M2 port of the bolter motor 6; the second valve 42 is connected to the bolter motor propulsion cylinder 7, and is used to control the operation of the bolter motor propulsion cylinder 7; the first valve 41 also includes a third overflow valve 411, the overflow oil port of the third overflow valve 411 is respectively connected to the first oil inlet P1 and the second oil port X1 of the switching valve group 5; the second oil port X1 is connected to the second reversing valve 57. The second valve 42 includes a sixth oil port A2, a seventh oil port B2 and a fourth relief valve 421. The two oil ports of the bolter motor propulsion cylinder 7 are connected to the sixth oil port A2 and the seventh oil port B2 respectively; the relief oil port of the fourth relief valve 421 is connected to the second relief valve 56 and the sixth oil port A2 respectively. The first relief valve 55 and the second relief valve 56 are connected to the return oil port of the third reversing valve 51.

[0031] The first reversing valve 54 and the second reversing valve 57 can be hydraulically controlled reversing valves or electromagnetic reversing valves. The bolter motor 6 is a large displacement heavy-duty motor that can provide a sufficiently large speed and torque.

[0032] The bolter motor 6 of the present invention is in a low speed and high torque operating condition:

[0033] The third reversing valve 51 remains in place, and the pressure oil output from the fourth oil port A1 of the first valve 41 enters the first oil inlet P1 of the switching valve group 5, and then passes through the first reversing valve 54, and after the flow is limited by the speed regulating valve 53, enters the M1 oil port of the anchor motor 6 for forward rotation. At this time, the anchor motor 6 is in a low-speed working state; the maximum pressure of the M1 oil port of the anchor motor 6 is limited by the third relief valve 411 of the first valve 41 to ensure that the anchor motor 6 can output a sufficient torque. At the same time, the propulsion pressure of the anchor motor propulsion cylinder 7 can be adjusted by the second relief valve 56 according to the actual working conditions. Under this working condition, the anchor machine can be in a high torque to carry out anchor holes, pressure relief holes, top cutting holes, gas and water exploration holes, or anchor holes in hard rock geological conditions.

[0034] The second relief valve 56 can be a manual or electromagnetic proportional relief valve.

[0035] The bolter motor 6 of the present invention is in a high speed and low torque operating condition:

[0036] After the third reversing valve 51 is switched, it is in the reversing position. The first reversing valve 54 and the second reversing valve 57 are switched in the reversing position due to the pressure oil entering the pilot port. Since the pressure of the first relief valve 55 is lower than that of the third relief valve 411, the maximum pressure of the forward M1 oil port of the bolting machine motor 6 is limited by the first relief valve 55, so that the bolting machine motor 6 is in a relatively small output torque. The pressure oil output from the fourth oil port A1 of the first leaf valve 41 enters the first oil inlet P1 of the switching valve group 5, and then passes through the first reversing valve 54, and then enters the forward M1 oil port of the bolting machine motor 6 through the internal flow channel 58 without flow restriction. At this time, the bolting machine motor 6 is in a high-speed working state; at the same time, the propulsion pressure of the bolting machine motor propulsion cylinder 7 can be adjusted by the second relief valve 56 according to the actual working conditions. This working condition allows normal bolt drilling operations.

[0037] The bolter motor 6 is in a high-speed and high-torque working condition: the third reversing valve 51 is in the reversing position after reversing, the first reversing valve 54 and the second reversing valve 57 are in the reversing position due to the pressure oil entering the pilot port, and the pressure of the first relief valve 55 is adjusted to be higher than the third relief valve 411. At this time, the maximum pressure of the M1 oil port of the bolter motor 6 is limited by the third relief valve 411, and the bolter motor 6 outputs a larger torque. The pressure oil output from the fourth oil port A1 of the first valve 41 enters the first oil inlet P1 of the switching valve group 5, and then passes through the first reversing valve 54, and then enters the M1 oil port of the bolter motor 6 through the internal flow channel 58. At this time, the bolter motor 6 is in a high-speed working state; at the same time, the propulsion pressure of the bolter motor propulsion cylinder 7 can be adjusted by the second relief valve 56 according to the actual working condition. This working condition can be used for large-diameter geological detection holes in coal and rock.

[0038] The above-mentioned specific implementation modes are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the above-mentioned specific implementation modes. Any appropriate changes or modifications made thereto by any ordinary technician in the technical field in accordance with the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A multi-mode hydraulic control system for an anchor bolter, characterized in that: include: The switching valve group (5) comprises a third reversing valve (51), a speed regulating valve (53), a first reversing valve (54), a first overflow valve (55), a second reversing valve (57), a first oil inlet (P1), a first oil port (A), a second oil port (X1) and a third oil port (X2); the first reversing valve (54) is connected to the first oil port (A) through the speed regulating valve (53), the first reversing valve (54) is also directly connected to the first oil port (A) through an internal flow channel (58), and the first reversing valve (54) is also connected to the first oil port (A) through a check valve (52). A); the third reversing valve (51) is connected to the pilot control port of the second reversing valve (57) and the pilot control port of the first reversing valve (54); the two oil ports of the first relief valve (55) are respectively connected to the third reversing valve (51) and the second reversing valve (57); the first oil inlet (P1) is connected to the first reversing valve (54); the first oil port (A) is connected to the M1 oil port of the bolting machine motor (6) for controlling the forward rotation of the bolting machine motor (6); the second oil port (X1) and the third oil port (X2) are both connected to the multi-way valve (4); The multi-way valve (4) comprises a first valve (41), a second valve (42) and an oil inlet (P), wherein the first valve (41) comprises a fourth oil port (A1) and a fifth oil port (B1), wherein the fourth oil port (A1) is connected to the first oil inlet (P1) of the switching valve group (5), and the fifth oil port (B1) is connected to the M2 oil port of the bolting machine motor (6) for controlling the reverse rotation of the bolting machine motor (6); the second valve (42) is connected to the bolting machine motor propulsion cylinder (7) for controlling the operation of the bolting machine motor propulsion cylinder (7); A hydraulic pump (3), wherein the outlet of the hydraulic pump (3) is connected to the oil inlet (P) of the multi-way valve (4).

2. The multi-mode hydraulic control system of the bolter according to claim 1, characterized in that: The first valve (41) further comprises a third overflow valve (411), the overflow oil port of the third overflow valve (411) being respectively connected to the first oil inlet (P1) and the second oil port (X1) of the switching valve group (5); The second oil port (X1) is communicated with the second reversing valve (57).

3. The multi-mode hydraulic control system of the bolter according to claim 1, characterized in that: The second valve (42) comprises a sixth oil port (A2) and a seventh oil port (B2), and the two oil ports of the bolter motor propulsion cylinder (7) are respectively connected to the sixth oil port (A2) and the seventh oil port (B2).

4. The multi-mode hydraulic control system of the bolter according to claim 1, characterized in that: The second valve (42) further comprises a fourth overflow valve (421), the switching valve group (5) further comprises a second overflow valve (56), the overflow oil port of the fourth overflow valve (421) is respectively connected to the second overflow valve (56) and the sixth oil port (A2); the first overflow valve (55) and the second overflow valve (56) are connected to the oil return port of the third reversing valve (51).

5. The multi-mode hydraulic control system for an anchor bolter according to claim 1, characterized in that: The switching valve group (5) also includes a second oil inlet (P2).

6. The multi-mode hydraulic control system for an anchor bolter according to claim 1, characterized in that: The hydraulic pump (3) is connected to the motor (1) via a coupling (2).

7. The multi-mode hydraulic control system for an anchor bolter according to claim 1, characterized in that: The third reversing valve (51) is manually or electrically controlled.

8. The multi-mode hydraulic control system for an anchor bolter according to claim 1, characterized in that: The first reversing valve (54) and the second reversing valve (57) are hydraulically controlled reversing valves or electromagnetic reversing valves.

9. An anchor bolter, comprising the anchor bolter multi-mode hydraulic control system according to any one of claims 1 to 8.

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