A connecting pin disassembly device

Abstract

This application relates to the technical field of coupling maintenance, and in particular to a connecting pin removal device, including a mounting plate, a first limiting block, a side plate, and a top column. The mounting plate has a first contact surface. The first limiting block and the side plate are both located on the first contact surface. The side plate is perpendicular to a first direction, and the surface of the side plate facing away from the mounting plate is a second contact surface. The side plate has a threaded hole penetrating the side plate along the first direction. The top column has external threads on its circumferential surface, and the top column is threadedly connected to the threaded hole. A flange on the coupling can be inserted between the first limiting block and the side plate. The first contact surface can contact the circumferential surface of the flange, the second contact surface can contact the main body of the coupling, the first limiting block can contact the end face of the flange, and the end face of the top column can contact the end face of the connecting pin. This application enables maintenance personnel to easily remove the connecting pin from the coupling, with simple and convenient operation, saving time and effort, thereby improving equipment maintenance efficiency.

Description

Technical Field

[0001] This application relates to the technical field of coupling maintenance, and in particular to a device for removing connecting pins. Background Technology

[0002] The ZB45 packaging machine is one of the mainstream production models in the tobacco industry, widely used due to its stable packaging quality and smooth operation. The second pusher is located below the inner lining paper removal mechanism of the YB45 main unit. The coupling, located at the second pusher, connects the drive shaft and transmission shaft, transmitting power and providing overload protection for the equipment.

[0003] The coupling consists of a connecting plate, a drive shaft connecting seat, a driven shaft connecting seat, a rubber elastic sleeve, a separating sleeve, connecting pins, and nuts. The drive shaft connecting seat connects to the drive shaft, and the driven shaft connecting seat connects to the driven shaft. The connecting plate houses the rubber elastic sleeve and serves as an intermediate connection. The rubber elastic sleeve buffers the circumferential rotational force on the connecting pin during equipment operation. The connecting pin connects the connecting plate to the drive shaft connecting seat and the driven shaft connecting seat. The separating sleeve isolates the coupling from the drive shaft connecting seat and the driven shaft connecting seat. During operation, three connecting pins on each side of the connecting plate connect the drive shaft connecting seat and the driven shaft connecting seat through the holes in the rubber elastic sleeve of the connecting plate. The entire coupling transmits power through the connecting pins. The connecting pins will break when the shear force exceeds the upper limit, providing overload protection.

[0004] Due to the inherent characteristics of flexible couplings, the connecting pins continuously compress the rubber elastic sleeves, causing deformation and positional shifts. This, in turn, affects the position of the connecting pins, increasing the shear force they bear and making the coupling prone to failure. Therefore, during production, the coupling needs to be disassembled and maintained periodically or when failure occurs. During disassembly, the six connecting pins must be pushed out of the connecting holes of the drive shaft connecting seat and the driven shaft connecting seat in sequence before the coupling can be removed.

[0005] Currently, due to the short axial distance between the coupling and the housing, the operating space during disassembly is limited. Only an oblique force can be applied to the end of the connecting pin to push it out, rather than a horizontal force, thus limiting the effective pushing force applied to the connecting pin in a single operation. Furthermore, due to deformation and positional misalignment, the connecting pin may become jammed relative to the connecting holes of the drive and driven shafts, resulting in a significant increase in friction. This makes disassembly and maintenance work time-consuming and labor-intensive, severely impacting equipment maintenance efficiency. Utility Model Content

[0006] To address the problems mentioned in the background section, this application provides a connecting pin removal device. This device enables maintenance personnel to easily remove the connecting pins from the coupling, offering simple and convenient operation that saves time and effort, thereby improving equipment maintenance efficiency.

[0007] This application provides a connecting pin removal device for removing connecting pins from a coupling. The coupling includes a main body, which is cylindrical, with a flange on its circumferential surface. The connecting pin passes through the flange. The connecting pin removal device includes a mounting plate, a first limiting block, a side plate, and a top column. The mounting plate has a first contact surface. The first limiting block and the side plate are both located on the first contact surface and are spaced apart along a first direction. The side plate is perpendicular to the first direction, and the surface of the side plate facing away from the mounting plate is a second contact surface. The side plate has a threaded hole that passes through the side plate along the first direction. The top column has an external thread on its circumferential surface and is located in the threaded hole and threadedly connected to the threaded hole. When the axis of the coupling is placed along the first direction, the flange can be inserted between the first limiting block and the side plate, the first contact surface can contact the circumferential surface of the flange, the second contact surface can contact the main body, the first limiting block can contact the end face of the flange, and the end face of the top column can contact the end face of the connecting pin.

[0008] Optionally, the cross-sectional area of ​​the top post is smaller than the cross-sectional area of ​​the connecting pin.

[0009] Optionally, the first contact surface is arc-shaped, the axis of the first contact surface extends along a first direction, and the diameter of the first contact surface is equal to the outer diameter of the flange.

[0010] Optionally, the second contact surface is arc-shaped, the axis of the second contact surface extends along the first direction, and the diameter of the second contact surface is equal to the diameter of the main body.

[0011] Optionally, a second limiting block is also provided on the first contact surface. The second limiting block and the first limiting block are spaced apart along the first direction. The second limiting block is located between the first limiting block and the side plate, and the flange can be inserted between the first limiting block and the second limiting block.

[0012] Optionally, when the flange is inserted between the first limiting block and the second limiting block, one side of the flange is in contact with the first limiting block, and the other side of the flange is in contact with the second limiting block.

[0013] Optionally, the number of first limiting blocks is at least two, and each first limiting block is spaced apart circumferentially along the first contact surface; the number of second limiting blocks is at least two, and each second limiting block is spaced apart circumferentially along the first contact surface.

[0014] Optionally, the mounting plate, side plate, first limiting block, and second limiting block are all made of stainless steel.

[0015] Optionally, the mounting plate is provided with an observation window that extends through the mounting plate along its thickness direction.

[0016] Optionally, the side panels are fan-shaped.

[0017] Compared with the prior art, this utility model has the following beneficial effects:

[0018] The connecting pin removal device provided in this application enables quick disassembly of connecting pins on couplings. When it is necessary to disassemble the connecting pin, the maintenance personnel only need to place the removal device on the coupling, so that the first contact surface contacts the circumferential surface of the flange, the second contact surface contacts the circumferential surface of the body, and the first limiting block contacts the end face of the flange to limit the connecting pin removal device. Then, the push pin is aligned with the connecting pin, and torque is applied to the push pin with a wrench. Under the action of the threaded connection with the threaded hole, the push pin can apply an axial force to the connecting pin, thereby pushing the connecting pin out. Compared with the prior art, this application does not require applying an axial force to the push pin, but rather applies torque to the push pin. Therefore, the maintenance personnel are not limited by the small space for disassembling the connecting pin, thereby reducing the difficulty of operation, saving time and effort, and improving the maintenance efficiency of the equipment. Attached Figure Description

[0019] Figure 1 A schematic diagram of the coupling structure is shown;

[0020] Figure 2 A schematic diagram of the installation scenario for the coupling is shown;

[0021] Figure 3 A schematic diagram of the connecting pin disassembly device provided in the embodiments of this application is shown. Figure 1 ;

[0022] Figure 4 A schematic diagram of the connecting pin disassembly device provided in the embodiments of this application is shown. Figure 2 .

[0023] Figure 5 A schematic diagram illustrating a usage scenario of the connecting pin disassembly device provided in this application embodiment is shown;

[0024] Figure 6 A cross-sectional view of the connecting pin disassembly device provided in the embodiments of this application, in conjunction with the body and flange, is shown.

[0025] Figure 7 The appearance of the connecting pin disassembly device provided in this application embodiment, in conjunction with the body and flange, is shown. Figure 1 ;

[0026] Figure 8 The appearance of the connecting pin disassembly device provided in this application embodiment, in conjunction with the body and flange, is shown. Figure 2 . Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0028] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0030] In the description of this embodiment, it should be noted that the terms "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0031] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0032] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below.

[0033] A coupling is a mechanical component used to connect two shafts (driving shaft and driven shaft) in different mechanisms, enabling them to rotate together and transmit torque. In many applications, couplings are typically located inside the equipment. Taking the ZB45 packaging unit as an example, the coupling is located at the second actuator of the ZB45 packaging unit, and it is used to connect the driving shaft and driven shaft within the ZB45 packaging unit.

[0034] For details, please refer to Figure 1 The coupling 200 includes a connecting plate 201, a drive shaft connecting seat 202, a driven shaft connecting seat 203, and a connecting pin 204. Both the drive shaft connecting seat 202 and the driven shaft connecting seat 203 include a body 205 and a flange 206. The body 205 is cylindrical, and the flange 206 is located on the circumferential surface of the body 205. The flange 206 has a connecting hole, through which the connecting pin 204 passes. The connecting pin 204 connects the connecting plate 201 to the drive shaft connecting seat 202 and the driven shaft connecting seat 203.

[0035] After prolonged use, the position of the connecting pins 204 in the coupling 200 may shift, causing the coupling 200 to fail. Therefore, during production, the coupling needs to be disassembled and maintained periodically or when it fails. During the disassembly of the coupling 200, each connecting pin 204 must be pushed out of the connecting holes of the drive shaft connecting seat 202 and the driven shaft connecting seat 203 in sequence. However, if... Figure 2 As shown, when coupling 200 is placed inside the equipment, the distance between the end face of coupling 200 and the equipment housing or other parts (e.g., Figure 2 The dimensions (as shown in the figure) are generally small, therefore maintenance personnel do not have sufficient space to apply axial forces (such as...) to the connecting pin 204. Figure 2 As shown by the force F in the diagram, it is difficult to push the connecting pin 204 out of the connecting hole. This makes the operation difficult for maintenance personnel, time-consuming and labor-intensive, and affects the maintenance efficiency of the equipment.

[0036] To address the aforementioned issues, this application provides a connecting pin removal device 100, which is applicable to application scenarios where the space for removing the connecting pin 204 is limited. Maintenance personnel can easily remove the connecting pin 204 from the coupling 200 using this connecting pin removal device 100. The operation is simple and convenient, saving time and effort, thereby improving the maintenance efficiency of the equipment.

[0037] refer to Figure 3 and Figure 4 The connecting pin disassembly device 100 provided in this application embodiment includes a mounting plate 1, a first limiting block 2, a side plate 4, and a top post 5. A first contact surface 11 is located on one side surface of the mounting plate 1. The first limiting block 2 and the side plate 4 are both disposed on the first contact surface 11, and the first limiting block 2 and the side plate 4 are along a first direction (e.g., ...). Figure 3 and Figure 4(As shown in the X direction) The side plates 4 are spaced apart. The side plate 4 is perpendicular to the X direction. The surface of the side plate 4 facing away from the mounting plate 1 is the second contact surface 41, and the side plate 4 is provided with a threaded hole 42 that passes through the side plate 4 in the X direction. The circumferential surface of the top post 5 is provided with external threads, and the top post 5 is inserted into the threaded hole 42 and threadedly connected to the threaded hole 42. For example, the top post 5 can be a bolt. When the axis of the coupling 200 is placed in the X direction, the flange 206 can be inserted between the first limiting block 2 and the side plate 4.

[0038] refer to Figure 5 and Figure 6 When it is necessary to disassemble the connecting pin 204, the maintenance personnel place the connecting pin disassembly device 100 on the coupling 200, so that the flange 206 is located between the first limiting block 2 and the side plate 4, and the end face of the flange 206 abuts against the side of the side plate 4 facing the first limiting block 2, the first contact surface 11 abuts against the circumferential surface of the flange 206, and the second contact surface 41 abuts against the circumferential surface of the body 205. By abutting the end face of the flange 206 against the side plate 4, the axial limitation of the connecting pin disassembly device 100 can be achieved. By abutting the first contact surface 11 against the circumferential surface of the flange 206, and the second contact surface 41 against the circumferential surface of the body 205, the radial limitation of the connecting pin disassembly device 100 can be achieved. Subsequently, the maintenance personnel rotate the connecting pin disassembly device 100 circumferentially along the body 205 and adjust the position of the top post 5 so that the top post 5 is aligned with the connecting pin 204. The maintenance personnel then used a wrench to rotate the top pin 5. Under the action of the threaded connection with the threaded hole 42, the top pin 5 will move toward the connecting pin 204, so as to push the connecting pin 204 out of the connecting hole of the flange 206.

[0039] The connecting pin removal device 100 provided in this application can quickly remove the connecting pin 204 on the coupling 200. Compared with the prior art, this application does not require applying an axial force to the top column 5, but instead applies a torque to the top column 5. Therefore, maintenance personnel are not limited by the small space for removing the connecting pin 204, thereby reducing the difficulty of operation, saving time and effort, and improving the maintenance efficiency of the equipment.

[0040] Furthermore, when the top post 5 is aligned with the connecting pin 204, the projection of the top post 5 along the X direction lies within the contour range of the end face of the connecting pin 204, and the cross-sectional area of ​​the top post 5 is smaller than that of the connecting pin 204. This structural design allows the top post 5 to be smoothly inserted into the connecting hole of the flange 206 during the process of pushing out the connecting pin 204, avoiding interference between the connecting pin 204 and the flange 206.

[0041] Further reference Figure 7 and Figure 8The mounting plate 1 is an arc-shaped plate, and the side plate 4 is fan-shaped. Both the first contact surface 11 and the second contact surface 41 are arc-shaped, and the axes of both the first contact surface 11 and the second contact surface 41 extend along the X direction. The diameter of the first contact surface 11 is equal to the outer diameter of the flange 206, and the diameter of the second contact surface 41 is equal to the diameter of the body 205. This allows the first contact surface 11 to fit tightly against the circumferential surface of the flange 206, and the second contact surface 41 to fit tightly against the circumferential surface of the body 205, thereby enhancing the limiting stability of the connecting pin disassembly device 100. Furthermore, by setting the side plate 4 to a fan shape, the aesthetic appearance is enhanced.

[0042] Optional, see reference Figure 7 and Figure 8 The mounting plate 1 is provided with an observation window 12 that extends through the mounting plate 1 along its thickness direction. By providing the observation window 12, maintenance personnel can see through the observation window 12 whether the top post 5 is in contact with the end face of the connecting pin 204, which is convenient for maintenance personnel to observe.

[0043] Optional, see reference Figure 6 A second limiting block 3 is also provided on the first contact surface 11. The second limiting block 3 is located between the first limiting block 2 and the side plate 4. The second limiting block 3 and the first limiting block 2 are spaced apart along the X direction. The distance between the first limiting block 2 and the second limiting block 3 is greater than or equal to the thickness of the flange 206, allowing the flange 206 to be inserted between the first limiting block 2 and the second limiting block 3. In this embodiment, the distance between the first limiting block 2 and the second limiting block 3 is equal to the thickness of the flange 206. When the flange 206 is inserted between the first limiting block 2 and the second limiting block 3, one side of the flange 206 is in contact with the first limiting block 2, and the other side of the flange 206 is in contact with the second limiting block 3. By providing the second limiting block 2, the limiting effect on the connecting pin disassembly device 100 can be enhanced.

[0044] Optionally, the mounting plate 1, side plate 4, first limiting block 2, and second limiting block 3 are all made of stainless steel to meet the strength requirements and ensure the durability of the connecting pin removal device 100. There are at least two first limiting blocks 2, spaced circumferentially along the first contact surface 11. There are at least two second limiting blocks 3, also spaced circumferentially along the first contact surface 11, to further enhance the limiting stability of the connecting pin removal device 100.

[0045] The connecting pin removal device 100 provided in this application enables quick disassembly of the connecting pin 204 on the coupling 200. When it is necessary to disassemble the connecting pin 204, the maintenance personnel only need to place the connecting pin removal device 100 on the coupling 200, so that the first contact surface 11 is in contact with the circumferential surface of the flange 206, the second contact surface 41 is in contact with the circumferential surface of the body 205, and the first limiting block 2 is in contact with the end face of the flange 206, thereby limiting the connecting pin removal device 100. Then, the maintenance personnel align the push pin 5 with the connecting pin 204 and apply torque to the push pin 5 with a wrench. Under the action of the threaded connection with the threaded hole 42, the push pin 5 can apply an axial force to the connecting pin 204, thereby pushing the connecting pin 204 out. Compared to existing technologies, this application does not require applying an axial force to the top column 5, but instead applies a torque to the top column 5. Therefore, maintenance personnel are not limited by the small disassembly space of the connecting pin 204, thereby reducing the difficulty of operation, saving time and effort, and improving the maintenance efficiency of the equipment.

[0046] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A pin dismounting device for dismounting a pin of a coupling, the coupling comprising a body, the body being a cylinder, a flange being provided on the circumference of the body, the pin penetrating the flange, characterized in that, The connecting pin disassembly device includes: Mounting plate, wherein the mounting plate is provided with a first contact surface; A first limiting block is disposed on the first contact surface; A side plate is disposed on the first contact surface, and the first limiting blocks are spaced apart along the first direction. The side plate is perpendicular to the first direction. The surface of the side plate facing away from the mounting plate is the second contact surface. The side plate is provided with a threaded hole that penetrates the side plate along the first direction. A top post has an external thread on its circumferential surface, and the top post is disposed in the threaded hole and threadedly connected to the threaded hole; When the axis of the coupling is placed along the first direction, the flange can be inserted between the first limiting block and the side plate, the first contact surface can contact the circumferential surface of the flange, the second contact surface can contact the circumferential surface of the body, the first limiting block can contact the end face of the flange, and the end face of the top column can contact the end face of the connecting pin.

2. A pin puller as claimed in claim 1, wherein The cross-sectional area of ​​the top post is smaller than the cross-sectional area of ​​the connecting pin.

3. A pin puller as defined in claim 1, wherein The first contact surface is arc-shaped, the axis of the first contact surface extends along the first direction, and the diameter of the first contact surface is equal to the outer diameter of the flange.

4. A pitman puller as defined in claim 1 wherein, The second contact surface is arc-shaped, the axis of the second contact surface extends along the first direction, and the diameter of the second contact surface is equal to the diameter of the main body.

5. A connecting pin disassembly device according to claim 3, characterized in that The first contact surface is also provided with a second limiting block, which is spaced apart from the first limiting block along the first direction. The second limiting block is located between the first limiting block and the side plate, and the flange can be inserted between the first limiting block and the second limiting block.

6. A connecting pin disassembly device according to claim 5, characterized in that When the flange is inserted between the first limiting block and the second limiting block, one side of the flange is in contact with the first limiting block, and the other side of the flange is in contact with the second limiting block.

7. A pitman puller as defined in claim 5 wherein, The number of first limiting blocks is at least two, and each first limiting block is arranged at intervals along the circumference of the first contact surface; the number of second limiting blocks is at least two, and each second limiting block is arranged at intervals along the circumference of the first contact surface.

8. The connecting pin removal device of claim 5, wherein, The mounting plate, the side plate, the first limiting block, and the second limiting block are all made of stainless steel.

9. The pitman disassembly device according to any one of claims 1 to 8, characterized in that The mounting plate is provided with an observation window that extends through the mounting plate along its thickness direction.

10. The pitman disassembly device according to any one of claims 1 to 8, characterized in that The side panel is fan-shaped.

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