High-stress fully mechanized caving face pressurization type anchor withdrawing device

Abstract

The utility model discloses a high-stress fully mechanized caving face pressurization type anchor withdrawing device, and relates to the technical field related to mining and supporting. The hydraulic jack comprises a jack body, a pressure plate, a tubular hydraulic pressure increasing valve and a two-way reversing valve, a piston push rod is movably connected into the jack body, the pressure plate is arranged above the piston push rod, a pressure rod is fixed to the bottom end of the pressure plate, a rotating bolt is rotatably connected to the bottom end of the pressure rod, and the two-way reversing valve is arranged on one side of the jack body. And a tubular hydraulic pressure increasing valve is arranged between the two-way reversing valve and the jack main body. By arranging the jack main body, the pressure plate, the tubular hydraulic pressure increasing valve and the two-way reversing valve, the problems that the anchor withdrawing stress is not uniform enough when the anchor withdrawing device withdraws the anchor and the pressure of hydraulic oil is not large enough easily when the anchor withdrawing device withdraws the anchor are solved, and the hydraulic jack has the advantages that the anchor withdrawing stress is more uniform when the anchor withdrawing device withdraws the anchor; the hydraulic oil pressure is higher during anchor withdrawing, and anchor withdrawing is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field related to mining and support, and particularly relates to a pressurized anchor withdrawal device for a high-stress fully mechanized caving working face. Background Art

[0002] Anchor remover is a mechanical device specially used for removing anchor cables in coal mines. Its main function is to help release the stress of the coal mine roadway roof and recover the anchor, so that the original anchor system can be removed when support is no longer needed or roadway maintenance is performed. When using the anchor remover, the operator needs to follow the corresponding safety regulations to ensure that the operation is performed under the correct operating steps. Since the anchor remover involves high pressure and force, improper operation may cause equipment damage or personal injury. Therefore, it is usually recommended that operators receive professional training and work under experienced supervision, but it still has the following disadvantages in actual use:

[0003] When the anchor unwinding device unwinds the anchor, the hydraulic oil is directly delivered to the jack through the oil pump. When the jack is working, the anchor cable tray is pushed to unwind the anchor. During the operation, the force of unwinding the anchor is not uniform enough, and the effect of unwinding the anchor is not good enough.

[0004] When the anchor unwinding device is unwinding, the hydraulic oil is input into the jack to push the anchor cable push plate. During the operation, the oil pressure is completely generated by the oil pump. When working, if the delivery pressure of the hydraulic oil is not large enough, it will take a longer time to carry out the anchor unwinding operation, affecting the efficiency of the anchor unwinding. Utility Model Content

[0005] The utility model aims to provide a booster type anchor undocking device for a high-stress fully mechanized caving working face. By arranging a jack body, a pressure plate, a tubular hydraulic booster valve and a two-way reversing valve, the utility model solves the problems that the anchor undocking force is not uniform when the anchor undocking device is undoing the anchor and the hydraulic oil pressure is not high enough when undoing the anchor.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a pressure-boosting anchor withdrawal device for a high-stress comprehensive caving working face, comprising a jack body, a pressure plate, a tubular hydraulic pressure-boosting valve and a two-way reversing valve, wherein a piston push rod is movably connected in the jack body, a pressure plate is arranged above the piston push rod, a pressure rod is fixed to the bottom end of the pressure plate, a rotating bolt is rotatably connected to the bottom end of the pressure rod, a two-way reversing valve is arranged on one side of the jack body, a tubular hydraulic pressure-boosting valve is arranged between the two-way reversing valve and the jack body, when working, after hydraulic oil is input through the jack body, the anchor cable tray is pushed up, when the pressure plate pushes the anchor cable tray, the anchor cable tray is driven up, and after the low-pressure hydraulic oil transported in the low-pressure input pipe is pressurized by the tubular hydraulic pressure-boosting valve, it is transported to the oil inlet pipe, thereby driving the jack body to work.

[0008] Furthermore, the output end of the jack body is fixedly connected with an oil outlet pipe, and the input end of the jack body is fixedly connected with an oil inlet pipe. The jack body outputs the hydraulic oil therein through the oil outlet pipe and inputs the oil through the oil inlet pipe.

[0009] Furthermore, a threaded opening is provided at the top end of the piston push rod, and the rotating bolt is threadedly connected in the threaded opening. A fitting opening is vertically provided in the pressure plate on one side of the pressure rod, and the piston push rod is threadedly connected to the rotating bolt through the threaded opening.

[0010] Furthermore, the input end of the tubular hydraulic booster valve is fixedly connected to a low-pressure input pipe, and the output end of the tubular hydraulic booster valve is fixedly connected to a high-pressure output pipe. The tubular hydraulic booster valve delivers low-pressure hydraulic oil thereto through the low-pressure input pipe, and delivers the hydraulic oil with increased pressure to the jack body through the high-pressure output pipe.

[0011] Furthermore, one end of the high-pressure output pipe away from the tubular hydraulic booster valve is fixedly connected to the oil inlet pipe, and one end of the low-pressure input pipe away from the tubular hydraulic booster valve is fixedly connected to the output end of the two-way reversing valve. After the high-pressure output pipe is connected to the oil inlet pipe, the high-pressure hydraulic oil transported in the high-pressure output pipe is transported to the oil inlet pipe, and then transported to the jack body through the oil inlet pipe.

[0012] Furthermore, the output end of the two-way reversing valve away from the low-pressure input pipe is fixedly connected to a return pipe 2, and one end of the return pipe 2 away from the two-way reversing valve is fixedly connected to the oil outlet pipe. The two-way reversing valve transports the oil in the oil outlet pipe to the return pipe 1 through the return pipe 2.

[0013] Furthermore, the two-way reversing valve is fixedly connected with a liquid inlet pipeline corresponding to the position of the low-pressure input pipe on one side away from the tubular hydraulic booster valve, and is fixedly connected with a return pipeline one corresponding to the position of the return pipeline two. The two-way reversing valve controls the on-off operation of the liquid inlet pipeline and the return pipeline.

[0014] The utility model has the following beneficial effects:

[0015] The utility model solves the problem of uneven anchoring force when the anchor unwinding device unwinds the anchor by arranging a jack body and a pressure plate. The jack body is placed outside the anchor cable jacket, and the pressure plate is rotated so that the engaging opening on the pressure plate is engaged with the outer peripheral surface of the anchor cable jacket, and oil is input into the jack body through the oil inlet pipe to lift the piston push rod. When the pressure plate hits the anchor cable tray, the anchor cable tray, the anchor cable jacket and the internal working anchor are separated to complete the anchor unwinding. When unwinding the anchor, the pressure is dispersed by the pressure plate, so that the anchoring force is more uniform.

[0016] The utility model solves the problem that the hydraulic oil pressure is not high enough when the anchor unwinding device is unwinding by arranging a jack body, a tubular hydraulic booster valve and a two-way reversing valve. When working, the oil is transported to the tubular hydraulic booster valve through the liquid inlet pipeline, and is transported to the high-pressure output pipe after being compressed by the tubular hydraulic booster valve, and is transported to the oil inlet pipe through the high-pressure output pipe, so that the oil is pressurized and input into the jack body, so that the hydraulic oil pressure is higher when the anchor unwinding device is unwinding, and the anchor unwinding effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a stereoscopic diagram of the assembly structure of a pressurized anchor withdrawal device for a high-stress fully mechanized caving working face;

[0019] Figure 2 It is a three-dimensional diagram of the main structure of the jack;

[0020] Figure 3 It is a three-dimensional diagram of the pressure plate structure;

[0021] Figure 4 It is a three-dimensional diagram of the structure of a tubular hydraulic booster valve;

[0022] Figure 5 It is a three-dimensional diagram of the structure of a two-way reversing valve.

[0023] Reference numerals:

[0024] 1. Jack body; 101. Oil outlet pipe; 102. Oil inlet pipe; 103. Piston push rod; 104. Screw mouth; 2. Pressure plate; 201. Fitting mouth; 202. Pressure rod; 203. Rotating bolt; 3. Tubular hydraulic booster valve; 301. High-pressure output pipe; 302. Low-pressure input pipe; 4. Two-way reversing valve; 401. Liquid inlet pipeline; 402. Return pipeline one; 403. Return pipeline two. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0026] See also Figure 1-5 The utility model is a high-stress fully mechanized caving working face booster type anchor unwinding device, comprising a jack body 1, a pressure plate 2, a tubular hydraulic booster valve 3 and a two-way reversing valve 4. A piston push rod 103 is movably connected in the jack body 1. After the hydraulic oil enters the jack body 1, pressure is generated, and the piston push rod 103 pushes the pressure plate 2 to rise. A pressure plate 2 is arranged above the piston push rod 103. A pressure rod 202 is fixed at the bottom end of the pressure plate 2. A rotating bolt 203 is rotatably connected to the bottom end of the pressure rod 202. By rotating the bolt 203, the pressure plate 2 is rotated. After entering the piston push rod 103, when the pressure rod 202 rises, the rise of the pressure rod 202 drives the pressure plate 2 to rise to support the anchor cable tray, so that the anchor jacket and the internal working anchor are separated, and the anchor withdrawal operation is carried out. A two-way reversing valve 4 is provided on one side of the jack body 1, and the two-way reversing valve 4 is used to reverse the oil delivery. A tubular hydraulic booster valve 3 is provided between the two-way reversing valve 4 and the jack body 1, and the low-pressure input pipe 302 is pressurized by the tubular hydraulic booster valve 3 to deliver the oil pressure to the jack body 1.

[0027] Specifically, the output end of the jack body 1 is fixedly connected to an oil outlet pipe 101 , and the input end of the jack body 1 is fixedly connected to an oil inlet pipe 102 . The jack body 1 outputs the oil therein through the oil outlet pipe 101 , and inputs the oil into the jack body 1 through the oil inlet pipe 102 .

[0028] Furthermore, a threaded hole 104 is provided at the top of the piston push rod 103, and a rotating bolt 203 is threadedly connected in the threaded hole 104. A fitting opening 201 is vertically provided in the pressure plate 2 on one side of the pressure rod 202. When the piston push rod 103 is working, the rotating bolt 203 is threadedly connected through the threaded hole 104, and the pressure plate 2 is movably connected to the peripheral side of the anchor cable sleeve through the fitting opening 201, thereby limiting the position of the anchor cable.

[0029] The operation process of this embodiment is as follows: when working, first place the jack body 1 on the outside of the anchor cable jacket, rotate the pressure plate 2, so that the fitting opening 201 on the pressure plate 2 is fitted into the outer peripheral surface of the anchor cable jacket, and the oil is input into the jack body 1 through the oil inlet pipe 102, so that the piston push rod 103 is lifted. When the pressure plate 2 hits the anchor cable tray, the anchor cable tray, the anchor cable jacket and the internal working anchor are separated to complete the anchor withdrawal. When withdrawing the anchor, the pressure is dispersed by the pressure plate 2, so that the force of withdrawing the anchor is more uniform. Specific embodiment 2

[0030] See also Figure 1 , 2 , 4, 5, on the basis of the specific embodiment 1, the input end of the tubular hydraulic booster valve 3 is fixedly connected with a low-pressure input pipe 302, and the output end of the tubular hydraulic booster valve 3 is fixedly connected with a high-pressure output pipe 301. The tubular hydraulic booster valve 3 delivers the oil pumped in the oil pump through the low-pressure input pipe 302 to the tubular hydraulic booster valve 3, and after being pressurized by the tubular hydraulic booster valve 3, it is pumped into the oil inlet pipe 102 through the high-pressure output pipe 301.

[0031] Specifically, one end of the high-pressure output pipe 301 away from the tubular hydraulic booster valve 3 is fixedly connected to the oil inlet pipe 102, and one end of the low-pressure input pipe 302 away from the tubular hydraulic booster valve 3 is fixedly connected to the output end of the two-way reversing valve 4. After the high-pressure output pipe 301 enters the oil inlet pipe 102, it is transported to the jack body 1.

[0032] Furthermore, the output end of the two-way reversing valve 4 away from the low-pressure input pipe 302 is fixedly connected to a return line 403, and one end of the return line 403 away from the two-way reversing valve 4 is fixedly connected to the oil outlet pipe 101. The two-way reversing valve 4 transports the oil in the jack body 1 output from the oil outlet pipe 101 to the two-way reversing valve 4 through the return line 403, and transports it to the return line 402 through the two-way annular valve.

[0033] Furthermore, the two-way reversing valve 4 is fixedly connected with a liquid inlet pipeline 401 corresponding to the position of the low-pressure input pipe 302 on one side away from the tubular hydraulic booster valve 3, and is fixedly connected with a return pipeline 1 402 corresponding to the position of the return pipeline 2 403. The two-way reversing valve 4 transports oil to the two-way reversing valve 4 through the liquid inlet pipeline 401, the liquid inlet pipeline 401 is connected to an external oil input pump, and the return pipeline is connected to the oil storage structure.

[0034] The operation process of this embodiment is as follows: when working, the oil is first delivered to the inlet pipeline 401 through the external oil input pump, and then adjusted to the inlet pipeline 401 and the low-pressure input pipe 302 through the two-way reversing valve 4, and the return pipeline 1 402 and the return pipeline 2 403 are closed to each other. At this time, the oil is delivered to the tubular hydraulic booster valve 3 through the inlet pipeline 401, and is delivered to the high-pressure output pipe 301 after being compressed by the tubular hydraulic booster valve 3, and is delivered to the oil inlet pipe 102 through the high-pressure output pipe 301, so that the oil The pressurized liquid is input into the jack body 1. After the jack body 1 completes its work, the two-way reversing valve 4 is adjusted to close the liquid inlet pipeline 401 and the low-pressure input pipe 302, and the return pipeline 1 402 and the return pipeline 2 403 are connected to each other, so that the oil in the jack body 1 is input into the oil outlet pipe 101, transported to the return pipeline 2 403 through the oil outlet pipe 101, transported to the two-way reversing valve 4 through the return pipeline 2 403, and output to the hydraulic oil storage device through the return pipeline 1 402 on the two-way reversing valve.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pressure-boosting anchor-removing device for a high-stress fully mechanized caving working face, comprising a jack body (1), a pressure plate (2), a tubular hydraulic pressure-boosting valve (3) and a two-way reversing valve (4), characterized in that: A piston push rod (103) is movably connected inside the jack body (1), a pressure plate (2) is arranged above the piston push rod (103), a pressure rod (202) is fixed to the bottom end of the pressure plate (2), and a rotating bolt (203) is rotatably connected to the bottom end of the pressure rod (202), a two-way reversing valve (4) is arranged on one side of the jack body (1), and a tubular hydraulic boosting valve (3) is arranged between the two-way reversing valve (4) and the jack body (1).

2. According to claim 1, a high-stress fully mechanized caving working face pressurized anchor removal device is characterized in that: The output end of the jack body (1) is fixedly connected to an oil outlet pipe (101), and the input end of the jack body (1) is fixedly connected to an oil inlet pipe (102).

3. The high-stress fully mechanized caving working face pressurized anchor removal device according to claim 1 is characterized in that: A threaded opening (104) is provided at the top end of the piston push rod (103), the rotating bolt (203) is threadedly connected in the threaded opening (104), and a fitting opening (201) is vertically penetrated in the pressure plate (2) on one side of the pressure rod (202).

4. The high-stress fully mechanized caving working face pressurized anchor removal device according to claim 2 is characterized in that: The input end of the tubular hydraulic pressure boosting valve (3) is fixedly connected to a low-pressure input pipe (302), and the output end of the tubular hydraulic pressure boosting valve (3) is fixedly connected to a high-pressure output pipe (301).

5. A high-stress fully mechanized caving working face pressurized anchor removal device according to claim 4, characterized in that: One end of the high-pressure output pipe (301) away from the tubular hydraulic booster valve (3) is fixedly connected to the oil inlet pipe (102), and one end of the low-pressure input pipe (302) away from the tubular hydraulic booster valve (3) is fixedly connected to the output end of the two-way reversing valve (4).

6. A high-stress fully mechanized caving working face pressurized anchor removal device according to claim 5, characterized in that: The output end of the two-way reversing valve (4) away from the low-pressure input pipe (302) is fixedly connected to a second return pipe (403), and one end of the second return pipe (403) away from the two-way reversing valve (4) is fixedly connected to the oil outlet pipe (101).

7. A high-stress fully mechanized caving working face pressurized anchor removal device according to claim 6, characterized in that: The two-way reversing valve (4) is fixedly connected to a liquid inlet pipeline (401) at a position corresponding to the low-pressure input pipe (302) on a side away from the tubular hydraulic booster valve (3), and is fixedly connected to a return pipeline (402) at a position corresponding to the return pipeline (403).

Images