Dismounting device for mining U-shaped pin

Abstract

The invention discloses a dismounting device for a mining U-shaped pin. The dismounting device comprises a first clamp arm, a second clamp arm and a linear driver. When the mining U-shaped pin needs to be disassembled, the first force application end of the first clamp arm and the second force application end of the second clamp arm are aligned and inserted into a gap between the mining U-shaped pin and the metal connector, the linear driver located between the first stress end and the second stress end is started, the distance between the first stress end and the second stress end is lengthened, and the mining U-shaped pin is disassembled. And the distance between the first force application end and the second force application end can be increased, so that the mining U-shaped pin is pulled out of the metal joint. Compared with the mode of disassembling the mining U-shaped pin by adopting a flat shovel prying mode, a sledge hammer hitting mode and a hand hammer jacking mode in the related technology, the linear driver can output gentle and large force, and therefore the mining U-shaped pin can be disassembled from the metal connector under the condition that the mining U-shaped pin is not damaged.

Description

Technical Field

[0001] This application relates to the field of mining equipment technology, and in particular to a disassembly device for mining U-shaped pins. Background Technology

[0002] Mining U-pins are accessories used in mining equipment, primarily on hydraulic supports to secure hydraulic pipes. (Reference) Figure 1 , Figure 1 This is an exploded view of mining U-pins, metal fittings, and hose fittings. Figure 2 This is a front view of a mining U-pin. As can be seen, the mining U-pin has two pin arms and a connecting rod between them. The two pin arms are not parallel; instead, they first approach each other and then move away. The hose connector has an annular groove. After the hose connector is inserted into the metal connector, the two pin arms of the mining U-pin engage with the annular groove of the hose connector to fix it to the metal connector. The closest distance between the two pin arms of the mining U-pin is smaller than the bottom diameter of the annular groove. During the process of the mining U-pin engaging with the annular groove, the two pin arms are initially spread apart. After the closest points of the two pin arms pass the annular groove, they approach each other again. Therefore, the mining U-pin has a certain resistance during disassembly. On the other hand, due to the influence of underground water and humid air, the mining U-pin will rust after a period of use, making it even more difficult to disassemble. In related technologies, the methods for disassembling mining U-pins are "prying with a flat shovel, hammering with a sledgehammer, and pushing with a hand hammer." This disassembly method not only easily leads to the breakage of the connecting rod of the mining U-pin, making the mining U-pin even more difficult to remove, but also causes the pipeline interface to deform, resulting in pipeline seal failure. Summary of the Invention

[0003] This application provides a disassembly device for mining U-shaped pins, which can solve the technical problems of difficult disassembly and easy damage of mining U-shaped pins in the prior art. The technical solution is as follows:

[0004] A disassembly device for mining U-shaped pins includes: a first clamping arm having a first hinge hole in its middle portion, one end of the first clamping arm being a first force-applying end and the other end being a first force-receiving end; a second clamping arm having a second hinge hole in its middle portion, one end of the second clamping arm being a second force-applying end and the other end being a second force-receiving end; wherein the first clamping arm and the second clamping arm are hinged together by a first hinge shaft; and a linear actuator located between the first force-receiving end and the second force-receiving end, the linear actuator having a first operating end and a second operating end, the first operating end being hinged to the first force-receiving end and the second operating end being hinged to the second force-receiving end; wherein, when the first operating end and the second operating end are far apart from each other, the first force-applying end and the second force-applying end are far apart from or close to each other; or, when the first operating end and the second operating end are close to each other, the first force-applying end and the second force-applying end are far apart from or close to each other.

[0005] Optionally, the first clamp arm includes two parallel first sub-clamp arms, with the second clamp arm located between the two first sub-clamp arms; or, the second clamp arm includes two parallel second sub-clamp arms, with the first clamp arm located between the two second sub-clamp arms.

[0006] Optionally, the first clamp arm is a crank arm that bends away from the direction of the second clamp arm. When the first and second working ends of the linear actuator are closest to each other, the first and second force-applying ends are in the same plane; or, when the first and second working ends of the linear actuator are farthest from each other, the first and second force-applying ends are in the same plane.

[0007] Optionally, the first force-applying end of the first clamp arm has a baffle located on the upper side of the first force-applying end, and the baffle forms a U-shape with the first force-applying end.

[0008] Optionally, the linear actuator is a hydraulic cylinder, a pneumatic cylinder, or an electronic actuator; the linear actuator is an integrated device of a hydraulic cylinder and a valve block, the integrated device of the hydraulic cylinder and the valve block comprising: a body, the body integrating a hydraulic cylinder body, a reversing valve body, a first oil circuit pipe, a second oil circuit pipe, a main oil inlet pipe, and a main oil return pipe; a piston is disposed in the hydraulic cylinder body, and an actuating rod is connected to one side of the piston; a reversing valve core is movably disposed in the reversing valve body.

[0009] Optionally, the upper surface of the body is provided with a first blind hole, a first oil port is provided near the closed end of the first blind hole, a second oil port is provided near the open end of the first blind hole, and an end cap is provided at the open end of the first blind hole. The first blind hole and the end cap constitute the hydraulic cylinder body. The upper surface of the body is provided with a second blind hole, which has a first working oil port, a second working oil port, a first oil outlet, and a first oil inlet. The second blind hole constitutes the reversing valve body. The body is provided with a first oil passage pipe, a second oil passage pipe, and a connecting pipe. The first oil passage pipe connects the first oil port and the first working oil port. The second oil passage pipe connects the second oil port and the second working oil port. The connecting pipe connects the first oil outlet and the first working oil port. The main oil inlet pipe... One end of the main body is connected to the first oil inlet, and the other end is used to connect to the oil outlet of the oil tank; one end of the main return oil pipe is connected to the first oil outlet, and the other end is used to connect to the oil return port of the oil tank; the bottom of the main body is the first working end, the working rod extends out from the end cover, and the end of the working rod extending out of the end cover is the second working end; the reversing valve core has a first working position and a second working position, and when the reversing valve core is in the first working position, the first oil inlet and the first oil port are connected through the first oil circuit pipe, and the second oil port and the first oil outlet are connected through the second oil circuit pipe; when the reversing valve core is in the second working position, the first oil inlet and the second oil port are connected through the second oil circuit pipe, and the first oil port is connected to the first oil outlet through the first oil circuit pipe, the connecting pipe, and the first oil outlet.

[0010] Optionally, the body further includes a third blind hole connected to the main return oil pipeline. The third blind hole has a second oil inlet and a second oil outlet. The third blind hole constitutes a pressure relief valve body, and a pressure relief valve core is provided in the third blind hole.

[0011] Optionally, a first handle is provided on the side of the body, the main return oil pipe is disposed inside the first handle, and the center line of the first handle extends along the central axis perpendicular to the first blind hole.

[0012] Optionally, the central axis of the first blind hole and the central axis of the second blind hole are parallel and lie in a first plane; the center line of the first handle lies in the first plane.

[0013] Optionally, a second handle is also included, which is fixedly connected to the first end and / or the second end of the first hinge shaft.

[0014] The beneficial effects of the technical solutions provided in this application include at least the following:

[0015] A device for dismantling mining U-shaped pins includes: a first clamping arm, a second clamping arm, and a linear actuator.

[0016] When it is necessary to disassemble the mining U-pin, the first force-applying end of the first clamp arm and the second force-applying end of the second clamp arm are inserted side by side into the gap between the mining U-pin and the metal joint. The linear actuator positioned between the first and second force-applying ends is then activated, increasing or decreasing the distance between them. This increases the distance between the first and second force-applying ends, thereby pulling the mining U-pin out of the metal joint. Compared to the "prying with a flat shovel, hammering with a sledgehammer, and pushing with a hand hammer" method used in related technologies for disassembling mining U-pins, the linear actuator can output a smoother and larger force, thus enabling the disassembly of the mining U-pin from the metal joint without damaging it.

[0017] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of mining U-pins, metal fittings, and hose fittings.

[0020] Figure 2 This is the front view of a mining U-shaped pin;

[0021] Figure 3 This is a perspective view of the disassembly device for mining U-shaped pins provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the state of the mining U-shaped pin disassembly device provided in the embodiments of this application before the linear drive is started;

[0023] Figure 5 This is a schematic diagram of the state of the mining U-shaped pin disassembly device provided in the embodiments of this application after the linear drive is started;

[0024] Figure 6 yes Figure 4 A three-dimensional schematic diagram of the first clamp arm;

[0025] Figure 7 yes Figure 4 A three-dimensional schematic diagram of the second clamp arm;

[0026] Figure 8 yes Figure 4 A three-dimensional schematic diagram of a linear actuator that integrates a hydraulic cylinder and a valve block;

[0027] Figure 9 for Figure 8 Top view of the main body;

[0028] Figure 10 for Figure 9 Sectional view of the main body at point AA;

[0029] Figure 11 for Figure 9 Sectional view of the main body at BB;

[0030] Figure 12 This is a cross-sectional view of the directional valve core in the first position in the hydraulic cylinder and valve block integrated device provided in the embodiments of this application;

[0031] Figure 13 This is a cross-sectional view of the directional valve core in the second position of the hydraulic cylinder and valve block integrated device provided in the embodiments of this application;

[0032] Figure 14 This is a schematic diagram of the hydraulic cylinder and valve block integrated device provided in the embodiments of this application.

[0033] Explanation of reference numerals in the attached figures

[0034] 1-Mining U-pin; 11-Pin arm; 12-Connecting rod; 2-First clamp arm; 21-First hinge hole; 22-First force-applying end; 23-First force-receiving end; 24-Baffle; 3-Second clamp arm; 31-Second hinge hole; 32-Second force-applying end; 33-Second force-receiving end; 5-Linear actuator; 51-First working end; 52-Second working end; 53-Body; 531-First oil passage pipe; 532-Second oil passage pipe; 533-Main oil inlet pipe; 534-Main oil return pipe; 535-First blind hole; 5 351-First oil port; 5312-Second oil port; 5353-End cap; 536-Second blind hole; 5361-First working oil port; 5362-Second working oil port; 5363-First oil outlet; 5364-First oil inlet; 537-Third blind hole; 5371-Second oil inlet; 5372-Second oil outlet; 54-Piston; 541-Actuating rod; 55-Reversing valve core; 56-Pressure relief valve core; 57-First handle; 58-Connecting pipe; 6-Second handle; 9-Hose connector; 91-Annular groove. Detailed Implementation

[0035] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0036] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the relative positions of the corresponding components in the direction of gravity when they are in use, and "inner" and "outer" refer to their relative positions to the contours of the corresponding components themselves. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0037] The mining U-pin 1 is an accessory used in mining equipment, mainly used on hydraulic supports to fix hydraulic pipes.

[0038] refer to Figure 1 , Figure 1 This is an exploded view of the mining U-shaped pin 1, metal connector 8, and hose connector 9.

[0039] Figure 2 This is the front view of mining U-shaped pin 1.

[0040] refer to Figure 2 The mining U-shaped pin 1 has two pin arms 11 and a connecting rod 12 connecting the two pin arms 11. The two pin arms 11 are not parallel to each other, but first approach each other and then move away from each other.

[0041] refer to Figure 1 The hose connector 9 has an annular groove 91. After the hose connector 9 is inserted into the metal connector 8, the two pin arms 11 of the mining U-pin 1 engage with the annular groove 91 to fix the hose connector 9 onto the metal connector 8. The closest point of the two pin arms 11 of the mining U-pin 1 is smaller than the bottom diameter of the annular groove 91. During the process of the mining U-pin 1 engaging with the annular groove 91, the two pin arms 11 are initially spread apart, and then move closer together after their closest points pass the annular groove 91. Therefore, the mining U-pin 1 experiences some resistance during disassembly. Furthermore, due to the influence of underground water and humid air, the mining U-pin 1 will corrode after a period of use, making it even more difficult to disassemble. Related technologies describe the disassembly of the mining U-pin 1 as "prying with a flat shovel, hammering with a sledgehammer, and pushing with a hand hammer." This disassembly method not only easily leads to the breakage of the connecting rod 12 of the mining U-pin 1, making the mining U-pin 1 more difficult to remove, but also causes the pipeline interface to deform, resulting in pipeline sealing failure.

[0042] refer to Figures 3 to 7 This application provides a disassembly device for mining U-shaped pins, including: a first clamp arm 22, a second clamp arm 3, and a linear actuator 5.

[0043] refer to Figure 6The first clamp arm 2 has a first hinge hole 21 in the middle, one end of the first clamp arm 2 is a first force-applying end 22, and the other end is a first force-receiving end 23. (Reference) Figure 7 The second clamp arm 3 has a second hinge hole 31 in the middle, one end of the second clamp arm 3 is a second force-applying end 32, and the other end is a second force-receiving end 33; wherein, the first clamp arm 2 and the second clamp arm 3 are hinged by a first hinge shaft.

[0044] refer to Figures 3 to 5 The linear actuator 5 is located between the first force-receiving end 23 and the second force-receiving end 33. The linear actuator 5 has a first actuating end 51 and a second actuating end 52. The first actuating end 51 is hinged to the first force-receiving end 23, and the second actuating end 52 is hinged to the second force-receiving end 33. Specifically, when the first actuating end 51 and the second actuating end 52 are far apart, the first force-applying end 22 and the second force-applying end 32 are either far apart or close together; or, when the first actuating end 51 and the second actuating end 52 are close together, the first force-applying end 22 and the second force-applying end 32 are either far apart or close together. For details, refer to... Figure 4 and Figure 5 When the first force-applying end 22 of the first clamp arm 2 and the second force-applying end 32 of the second clamp arm 3 are aligned, and the distance between the first force-receiving end 23 of the first clamp arm 2 and the second force-receiving end 33 of the second clamp arm 3 is at its minimum, the distance between the first action end 51 and the second action end 52 of the linear actuator 5 can be increased by moving away from each other. Similarly, when the first force-applying end 22 of the first clamp arm 2 and the second force-applying end 32 of the second clamp arm 3 are aligned, and the distance between the first force-receiving end 23 of the first clamp arm 2 and the second force-receiving end 33 of the second clamp arm 3 is at its maximum, the distance between the first action end 51 and the second action end 52 of the linear actuator 5 can also be increased by moving closer to each other.

[0045] In the above embodiment, when it is necessary to disassemble the mining U-pin 1, the first force-applying end 22 of the first clamp arm 2 and the second force-applying end 32 of the second clamp arm 3 are inserted side by side into the gap between the mining U-pin 1 and the metal joint. The linear actuator 5 located between the first force-receiving end 23 and the second force-receiving end 33 is activated, which increases the distance between the first force-receiving end 23 and the second force-receiving end 33, thereby increasing the distance between the first force-applying end 22 and the second force-receiving end 32, and thus pulling the mining U-pin 1 out of the metal joint. Compared with the method of "prying with a flat shovel, hitting with a sledgehammer, and pushing with a hand hammer" used in related technologies to disassemble the mining U-pin, the linear actuator 5 can output a relatively gentle and relatively large force, thus enabling the mining U-pin 1 to be disassembled from the metal joint without damaging it.

[0046] In embodiments of this application, the first clamp arm 2 includes two parallel first sub-clamp arms, and the second clamp arm 3 is located between the two first sub-clamp arms; or, refer to Figure 7 The second clamp arm 3 includes two parallel second sub-clamp arms, with the first clamp arm 2 located between the two second sub-clamp arms. This allows the two clamp arms to apply force more evenly, and also increases the force-bearing area of ​​the mining U-pin 1, thus making it less likely to be damaged.

[0047] In the embodiments of this application, reference is made to Figure 6 The first clamp arm 2 is a crank arm that bends away from the second clamp arm 3, which increases the distance between the first force-applying end 22 and the second force-applying end 32, thereby facilitating the installation of the linear actuator 5. When the first actuating end 51 and the second actuating end 52 of the linear actuator 5 are closest together, the first force-applying end 22 and the second force-applying end 32 are in the same plane; or, when the first actuating end 51 and the second actuating end 52 of the linear actuator 5 are farthest apart, the first force-applying end 22 and the second force-applying end 32 are in the same plane. Specifically, refer to... Figure 4 and Figure 5 When the first force-applying end 22 of the first clamp arm 2 and the second force-applying end 32 of the second clamp arm 3 are aligned, and the distance between the first force-receiving end 23 of the first clamp arm 2 and the second force-receiving end 33 of the second clamp arm 3 is at its minimum, the distance between the first action end 51 and the second action end 52 of the linear actuator 5 can be increased by moving away from each other. Similarly, when the first force-applying end 22 of the first clamp arm 2 and the second force-applying end 32 of the second clamp arm 3 are aligned, and the distance between the first force-receiving end 23 of the first clamp arm 2 and the second force-receiving end 33 of the second clamp arm 3 is at its maximum, the distance between the first action end 51 and the second action end 52 of the linear actuator 5 can also be increased by moving closer to each other.

[0048] In the embodiments of this application, reference is made to Figure 6 The first force-applying end 22 of the first clamp arm 2 has a baffle 24 located on the upper side of the first force-applying end 22, and the baffle 24 forms a U-shape with the first force-applying end 22. This prevents excessive force from causing the mining U-shaped pin 1 to fly out and injure people when disassembling it, thereby improving the safety of the disassembly device for the mining U-shaped pin.

[0049] In one embodiment of this application, reference is made to Figure 8The linear actuator 5 can be a hydraulic cylinder, a pneumatic cylinder, or an electronic actuator, and this application does not limit this. In the embodiments of this application, the linear actuator 5 is an integrated device of a hydraulic cylinder and a valve block, which includes: a body 53, which integrates a hydraulic cylinder body, a reversing valve body, a first oil passage pipe 531, a second oil passage pipe 532, a main oil inlet pipe 533, and a main oil return pipe 534; a piston 54 is provided in the hydraulic cylinder body, and an actuating rod 541 is connected to one side of the piston 54; a reversing valve core 55 is movably provided in the reversing valve body.

[0050] In the above embodiments, the hydraulic cylinder and valve block integrated device integrates a hydraulic cylinder body, a reversing valve body, a main oil inlet pipe 533, and a main oil return pipe 534. A piston 54 is provided in the hydraulic cylinder body, and an actuating rod 541 is connected to one side of the piston 54. A reversing valve core 55 is movably disposed in the reversing valve body. At the same time, the first oil circuit pipe 531 and the second oil circuit pipe 532 connecting the double-acting hydraulic cylinder and the reversing valve are integrated in the main body 53. Therefore, compared with the related technology where the double-acting hydraulic cylinder and the reversing valve are set separately and connected by joints and pipes, the hydraulic cylinder and valve block integrated device of this application eliminates the steps of pipe connection and interface connection, simplifies the installation process, saves installation space, and reduces the failure rate.

[0051] In one embodiment of this application, reference is made to Figures 8 to 10 The upper surface of the body 53 of the hydraulic cylinder and valve block integrated device is provided with a first blind hole 535, a first oil port 5351 is provided near the closed end of the first blind hole 535, a second oil port 5352 is provided near the open end of the first blind hole 535, and an end cap 5353 is provided at the open end of the first blind hole 535. The first blind hole 535 and the end cap 5353 constitute the hydraulic cylinder body.

[0052] The upper surface of the body 53 is provided with a second blind hole 536, which has a first working oil port 5361, a second working oil port 5362, a first oil outlet 5363, and a first oil inlet 5364. The second blind hole 536 constitutes the reversing valve body. The body 53 is provided with a first oil passage pipe 531, a second oil passage pipe 532, and a connecting pipe 58. The first oil passage pipe 531 connects the first oil port 5351 and the first working oil port 5361. The second oil passage pipe 532 connects the second oil port 5352 and the second working oil port 5362. The connecting pipe 58 connects the first oil outlet 5363 and the first working oil port 5361.

[0053] refer to Figure 10One end of the main oil inlet pipe 533 is connected to the first oil inlet 5364, and the other end is used to connect to the oil outlet of the oil tank; one end of the main oil return pipe 534 is connected to the first oil outlet 5363, and the other end is used to connect to the oil return port of the oil tank.

[0054] refer to Figure 8 , Figure 12 and Figure 13 The bottom of the body 53 is the first working end 51, the working rod 541 extends from the end cap 5353, and the end of the working rod 541 extending out of the end cap 5353 is the second working end 52;

[0055] The reversing valve core 55 has a first position and a second position. (Reference) Figure 12 When the reversing valve core 55 is in the first working position, the first oil inlet 5364 and the first oil port 5351 are connected through the first oil passage 531, and the second oil port 5352 and the first oil outlet 5363 are connected through the second oil passage 532. At this time, hydraulic oil enters from the first oil inlet 5364, passes through the first blind hole 535 below the piston 54 in the first oil port 5351, the piston 54 moves upward, causing the actuating rod 541 to extend, and the hydraulic oil above the piston 54 enters the main return oil pipe 534 through the second oil port 5352 and the second oil passage 532.

[0056] refer to Figure 13 When the reversing valve core 55 is in the second working position, the first oil inlet 5364 and the second oil port 5352 are connected through the second oil passage pipe 532, and the first oil port 5351 is connected through the first oil passage pipe 531, the connecting pipe 58, and the first oil outlet 5363. At this time, hydraulic oil from the oil tank enters the space formed above the piston 54 and the first blind hole 535 through the first oil inlet 5364 and the second working oil port 5362. The hydraulic oil below the piston 54 flows back to the oil tank through the first oil port 5351, the first oil passage pipe 531, the connecting pipe 58, and the first oil outlet 5363. The piston 54 moves downward, causing the actuating rod 541 to retract. The extension and retraction of the actuating rod 541 can be used to perform tasks.

[0057] It should be noted that the embodiments in this application are illustrated by taking a two-position four-way valve as an example. The first blind hole 535 and the reversing valve core 55 inserted into the first blind hole 535 can also constitute a three-way valve or a four-way valve. Its operation mode can be manual, motorized, hydraulic, electric, pneumatic, etc., all of which are within the scope of protection of this patent.

[0058] In one embodiment of this application, reference is made to Figures 8 to 11The main body 53 further includes a third blind hole 537 connected to the main return oil pipe 534. The third blind hole 537 has a second oil inlet 5371 and a second oil outlet 5372. The third blind hole 537 constitutes a pressure relief valve body, and a pressure relief valve core 56 is disposed in the third blind hole 537. Thus, the hydraulic cylinder and valve block integrated device of this application not only integrates a double-acting hydraulic cylinder and a directional valve, but also integrates a pressure relief valve. When hydraulic oil with a pressure higher than the set pressure is supplied to this integrated device, pressure can be relieved through the pressure relief valve. For details, refer to... Figure 3 The bottom of the third blind hole 537 is connected to the main return oil pipe 534. Excess hydraulic oil can enter the main return oil pipe 534 through this pipe, thereby protecting the integrated hydraulic cylinder and valve block device and extending the service life of the integrated device. It should be noted that the embodiment of this application is illustrated by way of a pressure relief valve. In other embodiments, the pressure relief valve may be of other forms, and this application does not limit it.

[0059] In one embodiment of this application, reference is made to Figures 8 to 11 A first handle 57 is provided on the side of the main body 53, and the main return oil pipe 534 is disposed inside the first handle 57. The center line of the first handle 57 extends along the central axis perpendicular to the central axis of the first blind hole 535. The central axis of the first blind hole 535 and the central axis of the second blind hole 536 are parallel and lie in a first plane; the center line of the first handle 57 lies in the first plane. By providing a first handle 57 on the side of the main body 53, it is easier for operators to grip the device when using it, thus improving operational stability. The handle can be positioned at any location on the main body 53 according to actual needs.

[0060] In one embodiment of this application, reference is made to Figure 4 The integrated hydraulic cylinder and valve block device also includes a second handle 6, which is fixedly connected to the first end and / or the second end of the first hinge shaft. This allows the operator to hold the disassembly device for the mining U-pin with both hands during operation, facilitating more precise control of force and accuracy.

[0061] refer to Figure 14 , Figure 14 This is a schematic diagram of the hydraulic cylinder and valve block integrated device provided in the embodiment of this application. In the figure, P is the oil inlet and T is the oil return port.

[0062] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0063] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0064] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A disassembly device for a mining U-shaped pin, the mining U-shaped pin having two pin arms (11) and a connecting rod (12) connected between the two pin arms (11), characterized in that: The disassembly device of the mining U-shaped pin comprises: A first clamp arm (2), wherein the middle portion of the first clamp arm (2) has a first hinge hole (21), one end of the first clamp arm (2) is a first force-applying end (22), and the other end is a first force-receiving end (23); A second clamp arm (3), wherein the middle portion of the second clamp arm (3) is provided with a second hinge hole (31), one end of the second clamp arm (3) is a second force-applying end (32), and the other end is a second force-receiving end (33); wherein the first clamp arm (2) and the second clamp arm (3) are hingedly connected via a first hinge axis; and a linear drive (5) located between the first force-bearing end (23) and the second force-bearing end (33), wherein the linear drive (5) has a first action end (51) and a second action end (52), wherein the first action end (51) is hinged to the first force-bearing end (23), and the second action end (52) is hinged to the second force-bearing end (33); Wherein, when the first action end (51) and the second action end (52) are away from each other, the first force applying end (22) and the second force applying end (32) are away from or close to each other; or, when the first action end (51) and the second action end (52) are close to each other, the first force applying end (22) and the second force applying end (32) are away from or close to each other.

2. The disassembly device for a mining U-shaped pin according to claim 1, characterized in that: The first clamp arm (2) comprises two mutually parallel first sub-clamp arms, and the second clamp arm (3) is located between the two first sub-clamp arms; Alternatively, the second clamp arm (3) comprises two second sub-clamp arms which are parallel to each other, and the first clamp arm (2) is located between the two second sub-clamp arms.

3. The disassembly device for a mining U-shaped pin according to claim 2, characterized in that: The first clamp arm (2) is a crank arm bent in a direction away from the second clamp arm (3); when the first action end (51) and the second action end (52) of the linear drive (5) are closest to each other, the first force-applying end (22) and the second force-applying end (32) are in the same plane; or, when the first action end (51) and the second action end (52) of the linear drive (5) are farthest from each other, the first force-applying end (22) and the second force-applying end (32) are in the same plane.

4. The disassembly device for a mining U-shaped pin according to claim 3, characterized in that: The first force-applying end (22) of the first clamp arm (2) has a baffle (24) located on the upper side of the first force-applying end (22), and the baffle (24) and the first force-applying end (22) form a U shape.

5. The disassembly device for a mining U-shaped pin according to claim 4, characterized in that: The linear actuator (5) is a hydraulic cylinder, a pneumatic cylinder or an electronic push rod; the linear actuator (5) is a hydraulic cylinder and a valve block integrated device, the hydraulic cylinder and valve block integrated device comprising: a body (53), the body (53) integrating a hydraulic cylinder body, a reversing valve body, a first oil pipeline (531), a second oil pipeline (532), a total oil inlet pipeline (533) and a total oil return pipeline (534); a piston (54) is arranged in the hydraulic cylinder body, one side of the piston (54) is connected to an action rod (541); a reversing valve core (55) is movably arranged in the reversing valve body.

6. The disassembly device for a mining U-shaped pin according to claim 5, characterized in that: The upper surface of the body (53) is provided with a first blind hole (535), a first oil port (5351) is provided near the closed end of the first blind hole (535), a second oil port (5352) is provided near the open end of the first blind hole (535), an end cover (5353) is provided at the open end of the first blind hole (535), and the first blind hole (535) and the end cover (5353) constitute the hydraulic cylinder body; The upper surface of the body (53) is provided with a second blind hole (536), the second blind hole (536) having a first working oil port (5361), a second working oil port (5362), a first oil outlet (5363) and a first oil inlet (5364); the second blind hole (536) constitutes the reversing valve body; The body (53) is provided with a first oil pipeline (531), a second oil pipeline (532) and a connecting pipeline (58); the first oil pipeline (531) connects the first oil port (5351) and the first working oil port (5361); the second oil pipeline (532) connects the second oil port (5352) and the second working oil port (5362); the connecting pipeline (58) connects the first oil outlet port 5363 and the first working oil port 5361; One end of the total oil inlet pipeline (533) is in communication with the first oil inlet port (5364), and the other end is used to connect to the oil outlet port of the oil tank; one end of the total oil return pipeline (534) is in communication with the first oil outlet port (5363), and the other end is used to connect to the oil return port of the oil tank; The bottom of the body (53) is the first action end (51), the action rod (541) extends from the end cover (5353), and the end of the action rod (541) extending from the end cover (5353) is the second action end (52); The reversing valve core (55) has a first working position and a second working position, and when the reversing valve core (55) is in the first working position, the first oil inlet (5364) and the first oil port (5351) are connected via a first oil pipeline (531), and the second oil port (5352) and the first oil outlet (5363) are connected via a second oil pipeline (532); when the reversing valve core (55) is in the second working position, the first oil inlet (5364) and the second oil port (5352) are connected via the second oil pipeline (532), and the first oil port (5351) is connected via the first oil pipeline (531), the connecting pipeline (58) and the first oil outlet (5363).

7. The disassembly device for a mining U-shaped pin according to claim 6, characterized in that: The main body (53) further comprises a third blind hole (537) connected to the main oil return pipeline (534), the third blind hole (537) having a second oil inlet (5371) and a second oil outlet (5372), the third blind hole (537) constituting a pressure relief valve body, and a pressure relief valve core (56) is arranged in the third blind hole (537).

8. The disassembly device for a mining U-shaped pin according to claim 6, characterized in that: A first handle (57) is disposed on the side of the body (53), the main oil return pipeline (534) is disposed in the first handle (57), and the center line of the first handle (57) extends perpendicular to the center axis of the first blind hole (535).

9. The disassembly device for a mining U-shaped pin according to claim 8, characterized in that: The central axis of the first blind hole (535) and the central axis of the second blind hole (536) are parallel and located in a first plane; the center line of the first handle (57) is located in the first plane.

10. The disassembly device for a mining U-shaped pin according to any one of claims 1 to 9, characterized in that: It also comprises a second handle (6), wherein the second handle (6) is fixedly connected to the first end and / or the second end of the first hinge shaft.

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