Dismounting device for mining U-shaped pin

Abstract

The utility model 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] The present application relates to the technical field of mining equipment, in particular to a dismounting device for a mining U-shaped pin. BACKGROUND

[0002] The mining U-shaped pin is a kind of accessory for mining equipment, mainly used on hydraulic support to fix hydraulic pipes. Figure 1 Figure 1 is a disassembled state diagram of the mining U-shaped pin, metal joint and hose joint, Figure 2 is a front view of the mining U-shaped pin, which can be seen that the mining U-shaped pin has two pin arms and a connecting rod connected between the two pin arms, and the two pin arms are not parallel to each other, but approach each other first and then diverge. The hose joint has an annular groove, and after the hose joint is inserted into the metal joint, it is clamped into the annular groove of the hose joint by the two pin arms of the mining U-shaped pin to fix the hose joint on the metal joint. The closest distance between the two pin arms of the mining U-shaped pin is less than the groove bottom diameter of the annular groove, and in the process of clamping the mining U-shaped pin into the annular groove, the two pin arms will be first spread apart, and then approach each other after the closest distance between the two pin arms passes the annular groove. Therefore, the mining U-shaped pin has a certain resistance in the disassembly process. On the other hand, affected by the water from the underground shower and the humid air, the mining U-shaped pin will rust after being used for a period of time, which makes it more difficult to disassemble. In the related art, the way to disassemble the mining U-shaped pin is "flat shovel prying, hammering, and hand hammering". Such disassembly method not only easily causes the connecting rod connected with the mining U-shaped pin to break, making the mining U-shaped pin more difficult to disassemble, but also causes the pipe interface to deform, resulting in pipe sealing failure. CONTENT OF THE INVENTION

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

[0004] ​The utility model provides a kind of dismounting device of mine U-shaped pin, comprising: first jaw arm, the middle part of the first jaw arm has first hinged hole, one end of the first jaw arm is first force end, and the other end is first force receiving end;Second jaw arm, the middle part of the second jaw arm has second hinged hole, one end of the second jaw arm is second force end, and the other end is second force receiving end;Wherein, first jaw arm and second jaw arm are hinged by first hinged shaft;And, between the first force receiving end and the second force receiving end, linear drive, the linear drive has first action end and second action end, the first action end is hinged with the first force receiving end, and second action end is hinged with the second force receiving end;Wherein, when the first action end and the second action end are away from each other, the first force end and the second force end are away or close;Or, when the first action end and the second action end are close to each other, the first force end and the second force end are away or close.

[0005] Optionally, the first jaw arm includes two first sub-jaw arms parallel to each other, and the second jaw arm is located between the two first sub-jaw arms;Or, the second jaw arm includes two second sub-jaw arms parallel to each other, and the first jaw arm is located between the two second sub-jaw arms.

[0006] Optionally, the first jaw arm is a crank arm curved away from the second jaw arm, when the first action end and the second action end of the linear drive are closest, the first force end and the second force end are in the same plane;Or, when the first action end and the second action end of the linear drive are farthest, the first force end and the second force end are in the same plane.

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

[0008] Optionally, the linear drive is a hydraulic cylinder, a gas cylinder or an electronic push rod;The linear drive is a hydraulic cylinder and valve block integrated device, the hydraulic cylinder and valve block integrated device includes: a body, the body is integrated with a hydraulic cylinder body, a reversing valve body, a first oil path pipeline, a second oil path pipeline, a total oil inlet pipeline and a total oil return pipeline;The hydraulic cylinder body is provided with a piston, one side of the piston is connected with an action rod;The reversing valve body is movably provided with a reversing valve core.

[0009] Optionally, the upper surface of the body is provided with a first blind hole, a first oil port is arranged near the closed end of the first blind hole, a second oil port is arranged near the open end of the first blind hole, and the open end of the first blind hole is provided with an end cover, wherein the first blind hole and the end cover constitute the hydraulic cylinder body; the upper surface of the body is provided with a second blind hole, the second blind hole is provided with 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 path pipeline, a second oil path pipeline and a connecting pipeline; the first oil path pipeline connects the first oil port and the first working oil port; the second oil path pipeline connects the second oil port and the second working oil port; the connecting pipeline connects the first oil outlet and the first working oil port; one end of the total oil inlet pipeline is in communication with the first oil inlet, and the other end is used for connecting the oil outlet of an oil tank; one end of the total oil return pipeline is in communication with the first oil outlet, and the other end is used for connecting the oil return port of the oil tank; the bottom of the body is the first acting end, the acting rod extends out of the end cover, and the end of the acting rod extending out of the end cover is the second acting 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 in communication through the first oil path pipeline, and the second oil port and the first oil outlet are in communication through the second oil path pipeline; when the reversing valve core is in the second working position, the first oil inlet and the second oil port are in communication through the second oil path pipeline, and the first oil port is in communication through the first oil path pipeline, the connecting pipeline and the first oil outlet.

[0010] Optionally, the body further comprises a third blind hole connected to the total oil return 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 the third blind hole is provided with a pressure relief valve core.

[0011] Optionally, the side of the body is provided with a first handle, the total oil return pipeline is arranged in the first handle, and the center line of the first handle extends along a direction perpendicular to the central axis of 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 located in a first plane; and the center line of the first handle is located in the first plane.

[0013] Optionally, the second handle is fixedly connected to the first end and / or the second end of the first hinged shaft.

[0014] The technical scheme provided by the embodiment of the application has at least the following beneficial effects:

[0015] A dismounting device for a mining U-shaped pin, comprising: a first jaw arm, a second jaw arm and a linear driver.

[0016] When the mining U-shaped pin needs to be disassembled, the first force applying end of the first clamping arm and the second force applying end of the second clamping arm are aligned and inserted into the gap of the mining U-shaped pin and the metal joint, the linear driver between the first force receiving end and the second force receiving end is started, the distance between the first force receiving end and the second force receiving end is lengthened or shortened, the distance between the first force applying end and the second force applying end can be increased, and thus the mining U-shaped pin is pulled out from the metal joint. Compared with the way of disassembling the mining U-shaped pin by using a flat shovel, a sledgehammer and a hand hammer in the related art, the linear driver can output a relatively gentle and large force, and thus the mining U-shaped pin can be disassembled from the metal joint without damaging the mining U-shaped pin.

[0017] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a disassembled view of a mining U-shaped pin, a metal joint and a hose joint;

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

[0021] Figure 3 is a perspective view of the disassembling device of the mining U-shaped pin provided by the embodiments of the present application;

[0022] Figure 4 is a schematic view of the disassembling device of the mining U-shaped pin provided by the embodiments of the present application before the linear driver is started;

[0023] Figure 5 is a schematic view of the disassembling device of the mining U-shaped pin provided by the embodiments of the present application after the linear driver is started;

[0024] Figure 6 is Figure 4 a perspective view of the first clamping arm in the first clamping arm;

[0025] Figure 7 is Figure 4 a perspective view of the second clamping arm in the second clamping arm;

[0026] Figure 8 is Figure 4 a perspective view of the linear driver as a hydraulic cylinder and a valve block integrated device in the first clamping arm;

[0027] Figure 9 for Figure 8 top view of the middle body;

[0028] Figure 10 for Figure 9 sectional view of the middle body at A-A;

[0029] Figure 11 for Figure 9 sectional view of the middle body at B-B;

[0030] Figure 12 is a sectional view of the hydraulic cylinder and valve block integrated device provided by the embodiment of the present application, in which the reversing spool is in the first station;

[0031] Figure 13 is a sectional view of the hydraulic cylinder and valve block integrated device provided by the embodiment of the present application, in which the reversing spool is in the second station;

[0032] Figure 14 is a schematic diagram of the principle of the hydraulic cylinder and valve block integrated device provided by the embodiment of the present application.

[0033] Explanation of reference signs

[0034] 1 - mine U-shaped pin; 11 - pin arm; 12 - connecting rod; 2 - first clamp arm; 21 - first hinged hole; 22 - first force applying end; 23 - first force receiving end; 24 - baffle; 3 - second clamp arm; 31 - second hinged hole; 32 - second force applying end; 33 - second force receiving end; 5 - linear actuator; 51 - first acting end; 52 - second acting end; 53 - body; 531 - first oil passage pipe; 532 - second oil passage pipe; 533 - total oil inlet pipe; 534 - total oil return pipe; 535 - first blind hole; 5351 - first oil port; 5312 - second oil port; 5353 - end cover; 536 - second blind hole; 5361 - first working oil port; 5362 - second working oil port; 5363 - first oil outlet port; 5364 - first oil inlet port; 537 - third blind hole; 5371 - second oil inlet port; 5372 - second oil outlet port; 54 - piston; 541 - acting rod; 55 - reversing spool; 56 - pressure relief spool; 57 - first handle; 58 - connecting pipe; 6 - second handle; 9 - hose joint; 91 - annular groove. DETAILED DESCRIPTION

[0035] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0036] In the present disclosure, the orientation words such as "upper", "lower" used herein generally refer to the "upper", "lower" of the corresponding components in the use state in the direction of gravity, and "inner", "outer" refer to the "inner", "outer" relative to the outline of the corresponding components. In addition, the terms "first", "second" and the like used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings. In the following description, when referring to the drawings, the same reference numerals in different drawings represent the same or similar elements unless otherwise explained.

[0037] The mining U-shaped pin 1 is a kind of accessory for mine equipment, mainly used on hydraulic support to fix hydraulic pipe.

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

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

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

[0041] Referring to Figure 1 , the hose joint 9 has an annular groove 91, and after the hose joint 9 is inserted into the metal joint 8, the two pin arms 11 of the mining U-shaped pin 1 are clamped into the annular groove 91 of the hose joint 9 to fix the hose joint 9 on the metal joint 8. The closest distance between the two pin arms 11 of the mining U-shaped pin 1 is less than the groove bottom diameter of the annular groove 91, and in the process of clamping the mining U-shaped pin 1 into the annular groove 91, the two pin arms 11 will be first spread apart, and then close to each other after the closest distance between the two pin arms 11 passes through the annular groove 91. Therefore, the mining U-shaped pin 1 has a certain resistance during disassembly. On the other hand, affected by the shower water and humid air in the mine, the mining U-shaped pin 1 will rust after being used for a period of time, which will make the mining U-shaped pin 1 more difficult to disassemble. In the related art, the mining U-shaped pin 1 is disassembled by "flat shovel prying, heavy hammer pounding and hand hammering". Such disassembly method not only easily causes the connecting rod 12 connected to the mining U-shaped pin 1 to break, making the mining U-shaped pin 1 more difficult to disassemble, but also causes the pipe interface to deform, resulting in pipe sealing failure.

[0042] Referring to Figures 3 to 7 , the present application provides a disassembling device for a mining U-shaped pin, comprising: a first jaw arm 22, a second jaw arm 3 and a linear actuator 5.

[0043] Referring to Figure 6Wherein, the middle part of the first jaw arm 2 has a first hinge hole 21, one end of the first jaw arm 2 is a first force applying end 22, and the other end is a first force receiving end 23. Figure 7 The middle part of the second jaw arm 3 has a second hinge hole 31, one end of the second jaw arm 3 is a second force applying end 32, and the other end is a second force receiving end 33; wherein, the first jaw arm 2 and the second jaw arm 3 are hinged by a first hinge shaft.

[0044] Reference Figures 3 to 5 The linear driver 5 is located between the first force receiving end 23 and the second force receiving end 33, the linear driver 5 has a first action end 51 and a second action end 52, the first action end 51 is hinged with the first force receiving end 23, and the second action end 52 is hinged with the second force receiving 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. Specifically, reference Figure 4 and Figure 5 When the first force applying end 22 of the first jaw arm 2 and the second force applying end 32 of the second jaw arm 3 are flush, and the distance between the first force receiving end 23 of the first jaw arm 2 and the second force receiving end 33 of the second jaw arm 3 is the smallest, the first action end 51 and the second action end 52 of the linear driver 5 are away from each other, which can drive the distance between the first force applying end 22 and the second force applying end 32 to increase. Similarly, when the first force applying end 22 of the first jaw arm 2 and the second force applying end 32 of the second jaw arm 3 are flush, and the distance between the first force receiving end 23 of the first jaw arm 2 and the second force receiving end 33 of the second jaw arm 3 is the largest, the first action end 51 and the second action end 52 of the linear driver 5 are close to each other, which can also drive the distance between the first force applying end 22 and the second force applying end 32 to increase.

[0045] In the above embodiment, when it is necessary to disassemble the mining U-shaped pin 1, the first force applying end 22 of the first jaw arm 2 and the second force applying end 32 of the second jaw arm 3 are aligned and inserted into the gap between the mining U-shaped pin 1 and the metal joint, and the linear driver 5 between the first force receiving end 23 and the second force receiving end 33 is started, so that the distance between the first force receiving end 23 and the second force receiving end 33 is lengthened, and the distance between the first force applying end 22 and the second force applying end 32 is increased, thereby pulling out the mining U-shaped pin 1 from the metal joint. Compared with the way of disassembling the mining U-shaped pin by using a flat shovel, a large hammer and a hand hammer in the related art, the linear driver 5 can output a relatively gentle and large force, so that the mining U-shaped pin 1 can be disassembled from the metal joint without damaging the mining U-shaped pin 1.

[0046] In the embodiments of the present application, the first jaw arm 2 comprises two first sub-jaw arms parallel to each other, and the second jaw arm 3 is located between the two first sub-jaw arms; or, referring to Figure 7 , the second jaw arm 3 comprises two second sub-jaw arms parallel to each other, and the first jaw arm 2 is located between the two second sub-jaw arms. In this way, the force exerted by the two jaw arms is more uniform, and the force bearing area of the mining U-shaped pin 1 is larger, so that the mining U-shaped pin 1 is not easily damaged.

[0047] In the embodiments of the present application, referring to Figure 6 , the first jaw arm 2 is a crank arm curved away from the second jaw arm 3, so that the distance between the first force exerting end 22 and the second force exerting end 32 is increased, thereby facilitating the installation of the linear actuator 5. When the first acting end 51 and the second acting end 52 of the linear actuator 5 are closest, the first force exerting end 22 and the second force exerting end 32 are in the same plane; or, when the first acting end 51 and the second acting end 52 of the linear actuator 5 are farthest, the first force exerting end 22 and the second force exerting end 32 are in the same plane. Specifically, referring to Figure 4 and Figure 5 , when the first force exerting end 22 of the first jaw arm 2 and the second force exerting end 32 of the second jaw arm 3 are flush, the first force bearing end 23 of the first jaw arm 2 and the second force bearing end 33 of the second jaw arm 3 are at the smallest distance, and the first acting end 51 and the second acting end 52 of the linear actuator 5 are far away from each other, the distance between the first force exerting end 22 and the second force exerting end 32 can be increased. Similarly, when the first force exerting end 22 of the first jaw arm 2 and the second force exerting end 32 of the second jaw arm 3 are flush, the first force bearing end 23 of the first jaw arm 2 and the second force bearing end 33 of the second jaw arm 3 are at the largest distance, and the first acting end 51 and the second acting end 52 of the linear actuator 5 are close to each other, the distance between the first force exerting end 22 and the second force exerting end 32 can also be increased.

[0048] In the embodiments of the present application, referring to Figure 6 , the first force exerting end 22 of the first jaw arm 2 has a baffle 24 located on the upper side of the first force exerting end 22, and the baffle 24 and the first force exerting end 22 form a U shape. In this way, when the mining U-shaped pin 1 is disassembled, it can be prevented from flying out due to excessive force, thereby improving the safety of the disassembly device of the mining U-shaped pin.

[0049] In an embodiment of the present application, referring to Figure 8The linear driver 5 can be a hydraulic cylinder, a pneumatic cylinder or an electronic push rod, and the application does not limit the same. In the embodiment of the application, the linear driver 5 is a hydraulic cylinder and valve block integrated device, which comprises a body 53 integrated with a hydraulic cylinder body, a reversing valve body, a first oil passage pipeline 531, a second oil passage pipeline 532, a total oil inlet pipeline 533 and a total oil return pipeline 534; the hydraulic cylinder body is provided with a piston 54, one side of the piston 54 is connected with an action rod 541; the reversing valve body is movably provided with a reversing valve core 55.

[0050] In the above embodiment, the hydraulic cylinder and valve block integrated device integrates the hydraulic cylinder body, the reversing valve body, the total oil inlet pipeline 533 and the total oil return pipeline 534, the hydraulic cylinder body is provided with the piston 54, one side of the piston 54 is connected with the action rod 541; the reversing valve body is movably provided with the reversing valve core 55. At the same time, the first oil passage pipeline 531 and the second oil passage pipeline 532 connecting the double-acting hydraulic cylinder and the reversing valve are integrated in the body 53. Therefore, compared with the double-acting hydraulic cylinder and the reversing valve being separately arranged and connected through joints and pipelines in the related art, the hydraulic cylinder and valve block integrated device of the application eliminates the steps of pipeline connection and interface connection, simplifies the installation process, saves the installation space and reduces the failure rate.

[0051] In one embodiment of the application, referring 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 arranged close to the closed end of the first blind hole 535, a second oil port 5352 is arranged close to the open end of the first blind hole 535, and the open end of the first blind hole 535 is provided with an end cover 5353, the first blind hole 535 and the end cover 5353 constitute the hydraulic cylinder body.

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

[0053] Referring to Figure 10One end of the total oil inlet pipeline 533 is communicated with the first oil inlet port 5364, and the other end is used for connecting an oil outlet of an oil tank; one end of the total oil return pipeline 534 is communicated with the first oil outlet port 5363, and the other end is used for connecting an oil return port of the oil tank;

[0054] With reference to Figure 8 , Figure 12 and Figure 13 The bottom of the body 53 is the first acting end 51, the acting rod 541 extends from the end cover 5353, and an end of the acting rod 541 extending out of the end cover 5353 is the second acting end 52.

[0055] The reversing valve core 55 has a first working position and a second working position. With reference to Figure 12 When the reversing valve core 55 is in the first working position, the first oil inlet port 5364 and the first oil port 5351 are communicated through the first oil passage pipeline 531, and the second oil port 5352 and the first oil outlet port 5363 are communicated through the second oil passage pipeline 532; at this time, hydraulic oil enters from the first oil inlet port 5364, passes through the first blind hole 535 below the piston 54 through the first oil port 5351, the piston 54 moves upwards, the acting rod 541 is elongated, and the hydraulic oil above the piston 54 enters the total oil return pipeline 534 through the second oil port 5352 and the second oil passage pipeline 532.

[0056] With reference to Figure 13 When the reversing valve core 55 is in the second working position, the first oil inlet port 5364 and the second oil port 5352 are communicated through the second oil passage pipeline 532, and the first oil port 5351 is communicated through the first oil passage pipeline 531, the connecting pipeline 58 and the first oil outlet port 5363. At this time, hydraulic oil from the oil tank enters the space above the piston 54 and the first blind hole 535 through the second working oil port 5362 through the first oil inlet port 5364, the hydraulic oil below the piston 54 flows back to the oil tank through the first oil port 5351, the first oil passage pipeline 531, the connecting pipeline 58 and the first oil outlet port 5363, the piston 54 moves downwards and the acting rod 541 is retracted. The extension and retraction of the acting rod 541 can be used to perform a task.

[0057] It should be noted that the embodiments of the present application are exemplarily described 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, and the operating mode can be manual, motorized, hydraulic, electric, pneumatic, etc., all of which belong to the protection scope of the present patent.

[0058] In one embodiment of the present application, with reference to Figures 8 to 11The body 53 further comprises a third blind hole 537 connected to the total oil return 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 arranged in the third blind hole 537. In this way, the hydraulic cylinder and valve block integrated device provided by the application not only integrates a double-acting hydraulic cylinder and a reversing valve, but also integrates a pressure relief valve. When hydraulic oil with a pressure higher than a set pressure is supplied to the integrated device, the pressure relief valve can be used for pressure relief. Specifically, refer to Figure 3 The bottom of the third blind hole 537 is in communication with the total oil return pipe 534, and excess hydraulic oil can enter the total oil return pipe 534 through the pipe, thereby protecting the hydraulic cylinder and valve block integrated device and prolonging the service life of the integrated device. It should be noted that the pressure relief valve is used as an example for illustrative purposes in the embodiment of the application, and in other embodiments, the pressure relief valve can also have other forms, which are not limited by the application.

[0059] In an embodiment of the application, refer to Figures 8 to 11 A first handle 57 is arranged on the side of the body 53, the total oil return pipe 534 is arranged 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. The center axis of the first blind hole 535 and the center axis of the second blind hole 536 are parallel and in a first plane, and the center line of the first handle 57 is in the first plane. By arranging the first handle 57 on the side of the body 53, the operator can hold the integrated device more easily and stably when using the integrated device. The handle can be arranged at any position on the body 53 according to actual conditions.

[0060] In an embodiment of the application, refer to Figure 4 The hydraulic cylinder and valve block integrated device further comprises a second handle 6, which is fixedly connected to the first end and / or the second end of the first hinge shaft. In this way, the operator can hold the dismounting device of the mine U-shaped pin with both hands when operating, so as to control the force and accuracy more accurately.

[0061] Refer to Figure 14 , Figure 14 is a schematic diagram of the principle of the hydraulic cylinder and valve block integrated device provided by the embodiment of the application, in which P is an oil inlet and T is an oil return port.

[0062] The preferred embodiments of the disclosure are described in detail above with reference to the drawings, but the disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the disclosure, various simple modifications can be made to the technical solutions of the disclosure, and these simple modifications all belong to the protection scope of the disclosure.

[0063] It should also be noted that various technical features described in the above detailed description are capable of being combined in any suitable manner unless otherwise explicitly stated. To avoid unnecessary repetition, various possible combinations of features are not all explicitly described in the present disclosure.

[0064] Furthermore, various embodiments of the present disclosure can be combined in any suitable manner, as long as it does not contradict the idea of the present disclosure, and it should be considered as disclosed in the present disclosure.

Claims

1. A device for removing a mining U-pin having two pin arms (11) and a connecting rod (12) connected between the two pin arms (11), characterized in that, The detachable device of the mining U-shaped pin comprises: a first clamping arm (2) having a first hinge hole (21) in the middle part, a first force applying end (22) at one end and a first force receiving end (23) at the other end; a second clamping arm (3) having a second hinge hole (31) in the middle part, a second force applying end (32) at one end and a second force receiving end (33) at the other end; wherein the first clamping arm (2) and the second clamping arm (3) are hinged by a first hinge shaft; and a linear actuator (5) between the first force receiving end (23) and the second force receiving end (33), the linear actuator (5) having a first acting end (51) and a second acting end (52), the first acting end (51) being hinged with the first force receiving end (23) and the second acting end (52) being hinged with the second force receiving end (33); wherein when the first acting end (51) and the second acting 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 acting end (51) and the second acting 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 mine U-pin disassembly device according to claim 1, characterized in that, The first clamping arm (2) comprises two first sub-clamping arms parallel to each other, and the second clamping arm (3) is located between the two first sub-clamping arms. Or, the second clamping arm (3) comprises two second sub-clamping arms parallel to each other, and the first clamping arm (2) is located between the two second sub-clamping arms.

3. The mine U-pin disassembly device according to claim 2, characterized in that, The first clamping arm (2) is a crank arm curved away from the second clamping arm (3), when the first acting end (51) and the second acting end (52) of the linear actuator (5) are closest, the first force applying end (22) and the second force applying end (32) are in the same plane; or when the first acting end (51) and the second acting end (52) of the linear actuator (5) are farthest, the first force applying end (22) and the second force applying end (32) are in the same plane.

4. The mine U-pin disassembly device according to claim 3, characterized in that, The first force applying end (22) of the first clamping 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-shaped structure.

5. The mine U-pin disassembly device 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 valve block integrated device, which comprises a body (53) integrated with a hydraulic cylinder body, a reversing valve body, a first oil path pipeline (531), a second oil path pipeline (532), a total oil inlet pipeline (533) and a total oil return pipeline (534); the hydraulic cylinder body is provided with a piston (54), one side of the piston (54) is connected with an acting rod (541); the reversing valve body is movably provided with a reversing valve core (55).

6. The mine U-pin disassembly device 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 arranged near the closed end of the first blind hole (535), a second oil port (5352) is arranged near the open end of the first blind hole (535), and the open end of the first blind hole (535) is provided with an end cover (5353), wherein 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), and the second blind hole (536) 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 pipeline (531), a second oil passage pipeline (532) and a connecting pipeline (58); the first oil passage pipeline (531) connects the first oil port (5351) and the first working oil port (5361); the second oil passage pipeline (532) connects the second oil port (5352) and the second working oil port (5362); and the connecting pipeline (58) connects the first oil outlet (5363) and the first working oil port (5361). One end of the total oil inlet pipeline (533) communicates with the first oil inlet (5364), and the other end is used for connecting the oil outlet of an oil tank; one end of the total oil return pipeline (534) communicates with the first oil outlet (5363), and the other end is used for connecting the oil return port of the oil tank. The bottom of the body (53) is the first acting end (51), the acting rod (541) extends from the end cover (5353), and the end of the acting rod (541) extending out of the end cover (5353) is the second acting 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) communicate through the first oil passage pipeline (531), and the second oil port (5352) and the first oil outlet (5363) communicate through the second oil passage 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) communicate through the second oil passage pipeline (532), and the first oil port (5351) communicates through the first oil passage pipeline (531), the connecting pipeline (58) and the first oil outlet (5363).

7. The mine U-pinch disassembly device according to claim 6, characterized in that, The body (53) further comprises a third blind hole (537) connected to the total oil return pipeline (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 the third blind hole (537) is provided with a pressure relief valve core (56).

8. The mine U-pin disassembly device according to claim 6, characterized in that, The side of the body (53) is provided with a first handle (57), the total oil return pipeline (534) is arranged in the first handle (57), and the center line of the first handle (57) extends along a direction perpendicular to the central axis of the first blind hole (535).

9. The mine U-pinch disassembly device 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 in a first plane; and the center line of the first handle (57) is in the first plane.

10. The device for dismounting a U-pin for mining machines according to any one of claims 1 to 9, characterized in that, 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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