Dismounting device for pin shaft of coal mining machine

Abstract

The utility model provides a coal mining machine pin shaft dismounting device which comprises a connecting piece, a stress plate, a hydraulic separation assembly and a swinging hammer assembly, one end of the connecting piece is detachably connected with a pin shaft to be dismounted on a coal mining machine body, and the other end or the middle of the connecting piece is detachably connected with the stress plate; one end of the hydraulic separation assembly abuts against the stress plate, and the other end of the hydraulic separation assembly abuts against the coal mining machine body. The swinging hammer assembly is connected with the connecting piece or the stress plate; the two ends of the hydraulic separation assembly move relatively through hydraulic control so as to drive the stress plate to drive the to-be-detached pin shaft to move away from the coal mining machine body. One part of the swinging hammer assembly impacts the connecting piece or the stress plate through reciprocating motion so as to drive the pin shaft to be disassembled to move away from the coal mining machine body. According to the pin shaft dismounting device, the axial tension on the pin shaft to be dismounted is effectively improved, the continuous impact force on the pin shaft to be dismounted is reserved, the time for dismounting the pin shaft is effectively shortened, the dismounting efficiency is improved, and manpower is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machine maintenance equipment, in particular to a coal mining machine pin shaft disassembly device. Background Art

[0002] On the fully-mechanized mining face, the supporting slippers at the bottom of the coal mining machine are important supporting and walking mechanisms of the coal mining machine. Once the slippers are damaged during the production process, the coal mining machine will not be able to move smoothly, which will in turn have an adverse effect on the traction movement of the coal mining machine to the mining face and the continuous and efficient mining of the working face. In order to ensure the continuous and efficient mining production of the fully-mechanized mining face, the staff of the fully-mechanized mining team must regularly replace the slippers once every three months on average. During replacement, the pin connecting the slippers to the coal mining machine legs needs to be pulled out, and then new slippers are installed to replace the old slippers. Only then is the replacement completed.

[0003] The supporting shoe of the coal mining machine has a simple mechanical structure, but is not easy to replace. Every time a replacement is made, it is difficult to pull out the pin shaft, especially when the pin shaft is deformed, stuck, or has other problems, and greater resistance needs to be overcome to disassemble and assemble the pin shaft. In the prior art, at least two workers are required to disassemble and assemble the pin shaft (i.e., pull out the pin shaft). The two workers cooperate to use a swing hammer to give the pin shaft multiple frequencies of impact force to move outward along the axial direction, thereby removing the pin shaft. This method is time-consuming, labor-intensive, and has a large workload, resulting in low efficiency in disassembly of the pin shaft. In addition, due to limited manpower, it is sometimes impossible to disassemble the pin shaft.

[0004] In addition, the replacement of the supporting sliding shoe can only be carried out in a limited space close to one side of the coal wall. Manual disassembly takes a long time, which will undoubtedly increase the time that the workers work close to the coal wall, thereby increasing the safety risk of the workers being hit by coal at the coal wall. Therefore, there is an urgent need for a coal mining machine pin disassembly device that can effectively save time and manpower. Utility Model Content

[0005] The utility model provides a coal mining machine pin shaft disassembly device to solve the problem that manual disassembly of the pin shaft in the prior art takes a long time and is inefficient.

[0006] In order to solve the above problems, the utility model provides a coal mining machine pin shaft disassembly device, comprising: a connecting piece, a force plate, a hydraulic separation assembly and a swing hammer assembly, one end of the connecting piece is detachably connected to the pin shaft to be disassembled on the coal mining machine body, and the other end or the middle part is detachably connected to the force plate; one end of the hydraulic separation assembly abuts against the force plate, and the other end abuts against the coal mining machine body; the swing hammer assembly is connected to the connecting piece or the force plate; wherein, the two ends of the hydraulic separation assembly are controlled to move relative to each other through hydraulic control, so as to drive the force plate to drive the pin shaft to be disassembled to move away from the coal mining machine body; a part of the swing hammer assembly impacts the connecting piece or the force plate through reciprocating motion, so as to drive the pin shaft to be disassembled to move away from the coal mining machine body.

[0007] Furthermore, the connecting member is a threaded rod, one end of which is detachably connected to the pin to be removed through a thread, and the central axis of the threaded rod is colinear with the central axis of the pin to be removed; the other end of the threaded rod passes through the force plate; the middle part of the threaded rod is detachably connected to the force plate.

[0008] Furthermore, the force-bearing plate includes a plate body and an adjusting nut, the plate body is provided with a through hole, and the middle part of the threaded rod is limitedly matched with the inner wall of the through hole; the adjusting nut is arranged at one end of the plate body away from the hydraulic separation assembly, and is threadedly matched with the threaded rod; by adjusting the position of the adjusting nut on the threaded rod, the relative distance between the plate body and the pin shaft to be disassembled is limited so that the plate body is abutted and matched with one end of the hydraulic separation assembly.

[0009] Optionally, the force-bearing plate has a through hole, and the middle part of the threaded rod is threadedly matched with the inner wall of the through hole; by adjusting the position of the force-bearing plate on the threaded rod, the relative distance between the force-bearing plate and the pin shaft to be disassembled is adjusted so that the force-bearing plate is abutted and matched with one end of the hydraulic separation assembly.

[0010] Furthermore, the hydraulic separation component has a through cavity inside, and the connecting piece passes through the through cavity; wherein the straight line where the two ends of the hydraulic separation component have a relative movement direction, the center axis of the through cavity, the center axis of the connecting piece, and the center axis of the pin shaft to be removed are collinear.

[0011] Furthermore, the coal mining machine pin shaft disassembly device also includes a washer, and the connecting end of the connecting piece and the pin shaft to be disassembled passes through the washer; the two ends of the washer are respectively abutted against the other end of the hydraulic separation component and the coal mining machine body.

[0012] Furthermore, the coal mining machine pin disassembly device also includes a manual hydraulic pump, which is connected to the hydraulic separation component through a pipeline to form a hydraulic oil circulation loop, and the manual hydraulic pump is used to drive the two ends of the hydraulic separation component to move relative to each other.

[0013] Furthermore, the swing hammer assembly includes a guide rod and a swing hammer, and the swing hammer can be slidably mounted on the guide rod to reciprocate along the axial direction of the guide rod; the two ends of the guide rod in the axial direction are respectively a connecting end and an impact end, and the connecting end is connected to a connecting piece or a force plate; the coal mining machine pin shaft disassembly device also includes a stop part, which is arranged at the impact end and is used to limit the swing hammer; wherein the swing hammer reciprocates along the guide rod and impacts the stop part, thereby driving the connecting end to impact the connecting piece or the force plate along the movement direction of the pin shaft to be disassembled away from the coal mining machine body.

[0014] Furthermore, the connecting piece is a threaded rod, one end of which is detachably connected to a pin to be removed via a thread, and the other end passes through the force-bearing plate and is detachably connected to a guide rod via a thread; the central axis of the threaded rod, the central axis of the pin to be removed, and the central axis of the guide rod are collinearly arranged.

[0015] Furthermore, the swinging hammer is a dumbbell-like structure, which includes a first counterweight, a connecting column and a second counterweight connected in sequence along the axial direction. The first counterweight and the second counterweight have the same structure and weight, and are symmetrically arranged at both ends of the axial direction of the connecting column so that the center of gravity of the swinging hammer is located on the central axis of the connecting column; the central axis of the connecting column, the central axis of the guide rod, the central axis of the connecting member, and the central axis of the pin to be disassembled are arranged colinearly; the swinging hammer assembly also includes a driving member, one end of which is connected to the connecting column, and the driving member is used to drive the swinging hammer to reciprocate.

[0016] Applying the technical scheme of the utility model, the utility model provides a coal mining machine pin shaft disassembly device, including: a connecting piece, a force plate, a hydraulic separation assembly and a swing hammer assembly, wherein one end of the connecting piece is detachably connected to the pin shaft to be disassembled on the coal mining machine body, and the other end or the middle part is detachably connected to the force plate; one end of the hydraulic separation assembly abuts against the force plate, and the other end abuts against the coal mining machine body; the swing hammer assembly is connected to the connecting piece or the force plate; wherein the two ends of the hydraulic separation assembly are controlled to move relative to each other by hydraulic pressure, so as to drive the force plate to drive the pin shaft to be disassembled to move away from the coal mining machine body; a part of the swing hammer assembly impacts the connecting piece or the force plate through reciprocating motion, so as to drive the pin shaft to be disassembled to move away from the coal mining machine body.

[0017] The utility model not only effectively improves the axial pulling force on the pin shaft to be disassembled, but also retains the continuous impact force on the pin shaft to be disassembled by setting the hydraulic separation component and the swing hammer component to work together, thereby not only effectively shortening the time for disassembling the pin shaft, improving the disassembly efficiency, but also effectively saving manpower; at the same time, due to the reduction in the time for disassembling the pin shaft, the time for the staff to work on the side of the coal wall is also shortened, thereby effectively reducing the safety risk of being hit by the coal of the side piece of the coal wall, ensuring long-term continuous and efficient safety production; the utility model proposes a coal mining machine pin shaft disassembly device, which has a simple structure and is easy to assemble The utility model is simple and easy to operate, with low cost and good actual use effect, and can be effectively applied to narrow working spaces such as the fully mechanized mining working face in coal mines, solving the problem of difficulty in disassembling the supporting sliding shoes on the coal mining machines in tunnels and fully mechanized mining working faces; it is found in practice that in the method of manually using a swing hammer to disassemble the pin shaft, only two pin shafts can be disassembled and one sliding shoe can be replaced in one work shift, while using the coal mining machine pin shaft disassembly device proposed by the utility model, it only takes about 20 minutes to disassemble a pin shaft, and at least two sliding shoes can be replaced in one work shift, which effectively saves time and manpower and avoids delays in other subsequent normal maintenance projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A specific structural schematic diagram of a pin shaft disassembly device for a coal mining machine provided by an embodiment of the utility model is shown;

[0020] Figure 2 A schematic diagram showing the cooperation between the hydraulic separation assembly and the manual hydraulic pump provided in the embodiment of the utility model is shown;

[0021] Figure 3 A schematic diagram showing the specific structure of the swing hammer assembly provided in an embodiment of the utility model is shown;

[0022] Figure 4 A schematic diagram of the matching structure of the force-bearing plate and the threaded rod provided in an embodiment of the utility model is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Connecting piece; 11. Threaded rod;

[0025] 20. Load-bearing plate; 21. Plate body; 22. Adjusting nut;

[0026] 30. Hydraulic separation assembly; 31. Through cavity;

[0027] 40. swing hammer assembly; 41. guide rod; 411. stopper; 42. swing hammer; 421. first counterweight; 422. connecting column; 423. second counterweight; 43. driving member;

[0028] 50. Pin shaft to be disassembled;

[0029] 60. Coal mining machine body;

[0030] 70. Washer;

[0031] 80. Manual hydraulic pump. DETAILED DESCRIPTION

[0032] 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0033] like Figures 1 to 4 As shown, an embodiment of the utility model provides a coal mining machine pin disassembly device, comprising: a connecting member 10, a force plate 20, a hydraulic separation assembly 30 and a swing hammer assembly 40, one end of the connecting member 10 is detachably connected to the pin 50 to be disassembled on the coal mining machine body 60, and the other end or the middle part is detachably connected to the force plate 20; one end of the hydraulic separation assembly 30 abuts against the force plate 20, and the other end abuts against the coal mining machine body 60; the swing hammer assembly 40 is connected to the connecting member 10 or the force plate 20; wherein, the two ends of the hydraulic separation assembly 30 are controlled to move relative to each other by hydraulic pressure, so as to drive the force plate 20 to drive the pin 50 to be disassembled to move away from the coal mining machine body 60; a part of the swing hammer assembly 40 impacts the connecting member 10 or the force plate 20 through reciprocating motion, so as to drive the pin 50 to be disassembled to move away from the coal mining machine body 60.

[0034] The utility model sets the hydraulic separation component 30 and the swing hammer component 40 to work together, which not only effectively improves the axial pulling force on the pin shaft 50 to be disassembled, but also retains the continuous impact force on the pin shaft 50 to be disassembled, thereby effectively shortening the time for disassembling the pin shaft, improving the disassembly efficiency, and effectively saving manpower; at the same time, due to the reduction in the time for disassembling the pin shaft, the time for the staff to work on the side of the coal wall is also shortened, thereby effectively reducing the safety risk of being hit by the coal of the coal wall side piece, ensuring long-term continuous and efficient safety production; the utility model proposes a coal mining machine pin shaft disassembly device with a simple structure, The utility model is easy to assemble and operate, has low cost and good actual use effect, can be efficiently applied to narrow working spaces such as the fully mechanized mining working face in coal mines, and solves the problem of difficulty in disassembling the supporting sliding shoes on the coal mining machines in tunnels and fully mechanized mining working faces; it is found in practice that in the method of manually using a swing hammer to disassemble the pin shaft, only two pin shafts can be disassembled and one sliding shoe can be replaced in one work shift, while using the coal mining machine pin shaft disassembly device proposed in the utility model, it only takes about 20 minutes to disassemble a pin shaft, and at least two sliding shoes can be replaced in one work shift, which effectively saves time and manpower and avoids delays in other subsequent normal maintenance projects.

[0035] In a specific embodiment of the present invention, the hydraulic separation assembly 30 uses a 100t hollow hydraulic jack to apply axial tension to the pin shaft 50 to be removed on the coal mining machine body 60.

[0036] like Figure 1 and Figure 4 As shown, the connecting member 10 is a threaded rod 11, one end of which is detachably connected to the pin shaft 50 to be disassembled through a thread, and the central axis of the threaded rod 11 is colinear with the central axis of the pin shaft 50 to be disassembled; the other end of the threaded rod 11 passes through the force-bearing plate 20; the middle part of the threaded rod 11 is detachably connected to the force-bearing plate 20.

[0037] By setting the connecting member 10 as a threaded rod 11, the reliable operation of the connecting member 10 is ensured, and the quick disassembly of the connecting member 10 from the pin shaft 50 to be disassembled and the swing hammer assembly 40 is facilitated.

[0038] like Figure 1 and Figure 4 As shown, the force-bearing plate 20 includes a plate body 21 and an adjusting nut 22. The plate body 21 has a through hole, and the middle part of the threaded rod 11 is limitedly matched with the inner wall of the through hole; the adjusting nut 22 is arranged at one end of the plate body 21 away from the hydraulic separation assembly 30, and is threadedly matched with the threaded rod 11; by adjusting the position of the adjusting nut 22 on the threaded rod 11, the relative distance between the plate body 21 and the pin shaft 50 to be disassembled is limited, so that the plate body 21 is abutted and matched with one end of the hydraulic separation assembly 30.

[0039] The force-bearing plate 20 includes a plate body 21 and an adjusting nut 22 , which not only facilitates the overall installation and disassembly of the force-bearing plate 20 , but also ensures that the position of the force-bearing plate 20 can be flexibly adjusted on the threaded rod 11 .

[0040] Optionally, the force-bearing plate 20 has a through hole, and the middle part of the threaded rod 11 is threadedly matched with the inner wall of the through hole; by adjusting the position of the force-bearing plate 20 on the threaded rod 11, the relative distance between the force-bearing plate 20 and the pin shaft 50 to be disassembled is adjusted so that the force-bearing plate 20 is abutted and matched with one end of the hydraulic separation assembly 30.

[0041] Such an arrangement simplifies the overall structure of the load-bearing plate 20 while ensuring that the load-bearing plate 20 works reliably.

[0042] like Figure 1 and Figure 2 As shown, the hydraulic separation component 30 has a through cavity 31 inside, and the connecting piece 10 passes through the through cavity 31; wherein, the straight line where the two ends of the hydraulic separation component 30 have a relative movement direction, the central axis of the through cavity 31, the central axis of the connecting piece 10, and the central axis of the pin shaft 50 to be disassembled are collinear.

[0043] By setting the straight line where the two ends of the hydraulic separation assembly 30 have relative movement directions, the central axis of the through cavity 31, the central axis of the connecting piece 10, and the central axis of the pin shaft 50 to be removed to be collinear, the smoothness and directionality of force transmission are ensured, thereby making the axial separation movement of the pin shaft 50 to be removed smooth and efficient.

[0044] like Figure 1 As shown, the coal mining machine pin shaft disassembly device also includes a washer 70, and the connecting end of the connecting piece 10 and the pin shaft 50 to be disassembled passes through the washer 70; the two ends of the washer 70 are respectively abutted against the other end of the hydraulic separation assembly 30 and the coal mining machine body 60.

[0045] By providing the gasket 70 , a buffer is achieved between the other end of the hydraulic separation assembly 30 and the coal mining machine body 60 , thereby preventing the hydraulic separation assembly 30 from bumping and damaging the coal mining machine body 60 during operation.

[0046] like Figure 1 and Figure 2 As shown, the coal mining machine pin disassembly device also includes a manual hydraulic pump 80, which is connected to the hydraulic separation component 30 through a pipeline to form a hydraulic oil circulation loop. The manual hydraulic pump 80 is used to drive the two ends of the hydraulic separation component 30 to move relative to each other.

[0047] By providing the manual hydraulic pump 80, it is not only convenient for the coal mining machine pin shaft disassembly device to move flexibly along with the coal mining machine body 60 as a whole, but also the structure is effectively simplified and the cost is saved.

[0048] like Figure 1 and Figure 3 As shown, the swing hammer assembly 40 includes a guide rod 41 and a swing hammer 42, and the swing hammer 42 can be slidably mounted on the guide rod 41 to reciprocate along the axial direction of the guide rod 41; the two ends of the guide rod 41 in the axial direction are respectively a connecting end and an impact end, and the connecting end is connected to the connecting piece 10 or the force plate 20; the coal mining machine pin shaft disassembly device also includes a stopper 411, and the stopper 411 is arranged at the impact end, which is used to limit the swing hammer 42; wherein, the swing hammer 42 reciprocates along the guide rod 41, impacts the stopper 411, and drives the connecting end to impact the connecting piece 10 or the force plate 20 along the movement direction of the pin shaft 50 to be disassembled away from the coal mining machine body 60.

[0049] The swing hammer assembly 40 includes a guide rod 41 and a swing hammer 42, which not only ensures the working reliability of the swing hammer assembly 40, but also simplifies the overall structure of the swing hammer assembly 40, making it easy to install, disassemble and maintain.

[0050] like Figure 1 and Figure 3 As shown, the connecting member 10 is a threaded rod 11, one end of the threaded rod 11 is detachably connected to the pin shaft 50 to be disassembled through a thread, and the other end passes through the force-bearing plate 20 and is detachably connected to the guide rod 41 through a thread; the central axis of the threaded rod 11, the central axis of the pin shaft 50 to be disassembled, and the central axis of the guide rod 41 are collinearly arranged.

[0051] By setting the central axis of the threaded rod 11, the central axis of the pin shaft 50 to be removed, and the central axis of the guide rod 41 to be colinear, the smoothness and directionality of the impact force transmission of the hammer assembly 40 are ensured, thereby making the axial separation movement of the pin shaft 50 to be removed smoother and more efficient.

[0052] like Figure 1 and Figure 3 As shown, the swing hammer 42 is a dumbbell-like structure, which includes a first counterweight 421, a connecting column 422 and a second counterweight 423 connected in sequence along the axial direction. The first counterweight 421 and the second counterweight 423 have the same structure and weight, and are symmetrically arranged at both ends of the axial direction of the connecting column 422 so that the center of gravity of the swing hammer 42 is located on the central axis of the connecting column 422; the central axis of the connecting column 422, the central axis of the guide rod 41, the central axis of the connecting member 10, and the central axis of the pin shaft 50 to be disassembled are arranged in a collinear manner; the swing hammer assembly 40 also includes a driving member 43, one end of which is connected to the connecting column 422, and the driving member 43 is used to drive the swing hammer 42 to reciprocate.

[0053] By setting the first counterweight 421 and the second counterweight 423 to have the same structure and weight, and symmetrically arranged at the two axial ends of the connecting column 422, the center of gravity of the swinging hammer 42 is located on the central axis of the connecting column 422, thereby ensuring the dynamic balance of the swinging hammer 42 during reciprocating motion; by setting the driving member 43, it is convenient for the staff to drive the swinging hammer 42 to reciprocate through manpower or control other power-assisting structures.

[0054] In a specific embodiment of the present invention, the driving member 43 can be a strap, one end of which is wrapped and tied to the middle of the connecting column 422, and the other end is manually driven and controlled by the staff. The main function of the strap is to provide axial impact force for the swing hammer 42 and act on the stopper 411, so other structures that can achieve the above functions can also replace the strap to provide power for the swing hammer 42; such as a connecting rod, a mechanical arm, etc.

[0055] The specific working process and principle of the utility model are now described in detail as follows, including the following steps:

[0056] S1. Align the center of the washer 70 with the center of the pin 50 to be removed, and close it to the legs of the coal mining machine body 60;

[0057] S2, align the threaded rod 11 with the center of the pin shaft 50 to be removed, and screw the threaded rod 11 into the pin shaft 50 to be removed;

[0058] S3, install the hydraulic separation assembly 30 (for example: 100t hollow hydraulic jack assembly), and connect the two ends of the oil delivery pipe to the inlet and outlet interfaces of the hydraulic separation assembly 30 and the manual hydraulic pump 80 respectively;

[0059] S4, inserting the through cavity 31 of the hydraulic separation assembly 30 onto the threaded rod 11;

[0060] S5. Rotate and screw the force-bearing plate 20 and the adjusting nut 22 onto the threaded rod 11 in sequence until the washer 70 and the hydraulic separation assembly 30 are tightly fitted under the axial movement of the plate body 21, and keep the centers of each component on the central axis of the threaded rod 11;

[0061] S6. Install the swing hammer assembly 40, sleeve the swing hammer 42 onto the guide rod 41, sleeve the guide rod 41 onto the threaded rod 11, tighten the matching threads between the guide rod 41 and the threaded rod 11, and finally fix one end of the driving member 43 onto the swing hammer 42;

[0062] S7. A staff member places the manual hydraulic pump 80 on a stable surface, manually operates the handle of the manual hydraulic pump 80, drives the oil cylinder of the hydraulic separation assembly 30 to extend, and at the same time drives the force plate 20, the swing hammer assembly 40 and the pin shaft 50 to be disassembled to move outward along the axial direction;

[0063] S8. At the same time, another operator holds the driving part 43 and repeatedly pulls and swings the swing hammer 42 axially outward along the guide rod 41. The swing hammer 42 causes impacts in multiple directions (mainly axial impacts) to the stopper 411, further prompting the pin shaft 50 to be disassembled to move outward, and finally completing the separation of the pin shaft 50 to be disassembled and the coal mining machine body 60, so that the subsequent replacement of the sliding shoe can be carried out.

[0064] In summary, the utility model provides a pin disassembly device for a coal mining machine. The utility model not only effectively improves the axial pulling force on the pin 50 to be disassembled, but also retains the continuous impact force on the pin 50 to be disassembled, thereby effectively shortening the time for disassembling the pin and improving the disassembly efficiency, and effectively saving manpower; at the same time, due to the reduction in the time for disassembling the pin, the time for the staff to work on the coal wall side is also shortened, thereby effectively reducing the safety risk of being hit by the coal on the side of the coal wall, and ensuring long-term, continuous and efficient safety production; the utility model proposes a coal mining machine pin disassembly device. The machine pin shaft disassembly device has a simple structure, is easy to assemble and operate, has low cost and good actual use effect, can be efficiently applied to narrow working spaces such as coal mine comprehensive mining working faces, and solves the problem of difficulty in disassembling supporting sliding shoes on coal mining machines in tunnels and comprehensive mining working faces; it is found in practice that in the method of manually using a swing hammer to disassemble the pin shaft, only two pin shafts can be disassembled and one sliding shoe can be replaced in one work shift, while using the coal mining machine pin shaft disassembly device proposed by the utility model, it only takes about twenty minutes to disassemble a pin shaft, and at least two sliding shoes can be replaced in one work shift, which effectively saves time and manpower and avoids delays in other subsequent normal maintenance projects.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0067] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0070] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A coal mining machine pin disassembly device, characterized in that: include: A connecting piece (10), a force plate (20), a hydraulic separation assembly (30) and a swing hammer assembly (40), wherein one end of the connecting piece (10) is detachably connected to a pin shaft (50) to be disassembled on a coal mining machine body (60), and the other end or the middle part is detachably connected to the force plate (20); one end of the hydraulic separation assembly (30) is in contact with the force plate (20), and the other end is in contact with the coal mining machine body (60); the swing hammer assembly (40) is in contact with the connecting piece (10) or the force plate (20); wherein, the two ends of the hydraulic separation assembly (30) are controlled to move relative to each other through hydraulic pressure to drive the force plate (20) to drive the pin shaft (50) to be disassembled to move away from the coal mining machine body (60); a part of the swing hammer assembly (40) impacts the connecting piece (10) or the force plate (20) through reciprocating motion to drive the pin shaft (50) to be disassembled to move away from the coal mining machine body (60).

2. The coal mining machine pin disassembly device according to claim 1, characterized in that: The connecting member (10) is a threaded rod (11), one end of the threaded rod (11) is detachably connected to the pin shaft (50) to be disassembled via a thread, and the central axis of the threaded rod (11) is colinear with the central axis of the pin shaft (50) to be disassembled; the other end of the threaded rod (11) passes through the force-bearing plate (20); and the middle part of the threaded rod (11) is detachably connected to the force-bearing plate (20).

3. The coal mining machine pin disassembly device according to claim 2, characterized in that: The force-bearing plate (20) comprises a plate body (21) and an adjusting nut (22); the plate body (21) is provided with a through hole, and the middle part of the threaded rod (11) is limitedly matched with the inner wall of the through hole; the adjusting nut (22) is arranged at one end of the plate body (21) away from the hydraulic separation component (30), and is threadedly matched with the threaded rod (11); by adjusting the position of the adjusting nut (22) on the threaded rod (11), the relative distance between the plate body (21) and the pin shaft (50) to be disassembled is limited, so that the plate body (21) is abutted and matched with one end of the hydraulic separation component (30).

4. The pin disassembly device for a coal mining machine according to claim 2, characterized in that: The force-bearing plate (20) is provided with a through hole, and the middle portion of the threaded rod (11) is threadedly matched with the inner wall of the through hole; by adjusting the position of the force-bearing plate (20) on the threaded rod (11), the relative distance between the force-bearing plate (20) and the pin shaft (50) to be disassembled is adjusted, so that the force-bearing plate (20) is abutted and matched with one end of the hydraulic separation assembly (30).

5. The pin disassembly device for a coal mining machine according to claim 1, characterized in that: The hydraulic separation component (30) has a through cavity (31) inside, and the connecting piece (10) passes through the through cavity (31); wherein the straight line where the two ends of the hydraulic separation component (30) are located in the relative movement direction, the central axis of the through cavity (31), the central axis of the connecting piece (10), and the central axis of the pin shaft (50) to be disassembled are collinear.

6. The pin disassembly device for a coal mining machine according to claim 1, characterized in that: The coal mining machine pin shaft disassembly device also includes a washer (70), and the connection end between the connecting piece (10) and the pin shaft (50) to be disassembled passes through the washer (70); the two ends of the washer (70) are respectively abutted against the other end of the hydraulic separation component (30) and the coal mining machine body (60).

7. The pin disassembly device for a coal mining machine according to claim 1, characterized in that: The coal mining machine pin disassembly device also includes a manual hydraulic pump (80), which is connected to the hydraulic separation component (30) through a pipeline to form a hydraulic oil circulation loop, and the manual hydraulic pump (80) is used to drive the two ends of the hydraulic separation component (30) to move relative to each other.

8. The pin disassembly device for a coal mining machine according to claim 1, characterized in that: The swing hammer assembly (40) includes a guide rod (41) and a swing hammer (42), wherein the swing hammer (42) is slidably mounted on the guide rod (41) to reciprocate along the axial direction of the guide rod (41); the two axial ends of the guide rod (41) are a connecting end and an impact end, respectively, wherein the connecting end is connected to the connecting piece (10) or the force plate (20); the coal mining machine pin shaft disassembly device also includes a stopper (411), wherein the stopper (411) is arranged at the impact end and is used to limit the swing hammer (42); wherein the swing hammer (42) reciprocates along the guide rod (41) and impacts the stopper (411), thereby driving the connecting end to impact the connecting piece (10) or the force plate (20) along the movement direction of the pin shaft (50) to be disassembled away from the coal mining machine body (60).

9. The pin disassembly device for a coal mining machine according to claim 8, characterized in that: The connecting member (10) is a threaded rod (11), one end of which is detachably connected to the pin shaft (50) to be disassembled via a thread, and the other end of which passes through the force-bearing plate (20) and is detachably connected to the guide rod (41) via a thread; the central axis of the threaded rod (11), the central axis of the pin shaft (50) to be disassembled, and the central axis of the guide rod (41) are arranged in a colinear manner.

10. The pin disassembly device for a coal mining machine according to claim 8, characterized in that: The swinging hammer (42) is a dumbbell-like structure, and the dumbbell-like structure includes a first counterweight (421), a connecting column (422), and a second counterweight (423) connected in sequence along the axial direction. The first counterweight (421) and the second counterweight (423) have the same structure and weight, and are symmetrically arranged at two ends of the axial direction of the connecting column (422), so that the center of gravity of the swinging hammer (42) is located on the central axis of the connecting column (422); the central axis of the connecting column (422), the central axis of the guide rod (41), the central axis of the connecting member (10), and the central axis of the pin shaft (50) to be disassembled are arranged in a colinear manner; The swing hammer assembly (40) further comprises a driving member (43), one end of which is connected to the connecting column (422), and the driving member (43) is used to drive the swing hammer (42) to reciprocate.

Images