Work roll bearing dismounting device

Abstract

This utility model relates to the field of tooling technology, specifically disclosing a work roller bearing disassembly device. The device includes a main body, a locking pin, and an ejector pin. The main body has a recessed blind hole with a tension slit in its wall, which connects to the blind hole. An assembly hole extends through the bottom of the blind hole. The locking pin is detachably connected to the main body to reduce the distance between the two sides of the tension slit, thus reducing the inner diameter of the blind hole. After the inner diameter of the blind hole is reduced, the side wall of the blind hole presses against the outer ring of the bearing. The ejector pin is movably connected to the assembly hole and can move relative to the main body along its length to abut against the drive shaft. This device allows for convenient, quick, and safe bearing disassembly, improving equipment maintenance efficiency and reducing maintenance costs and the risk of equipment damage.

Description

Technical Field

[0001] This utility model relates to the field of tools and implements, and in particular to a work roller bearing disassembly device. Background Technology

[0002] In the tobacco processing industry, conveyor belt assemblies are crucial equipment for transporting tobacco shreds, primarily consisting of drive rollers, tension rollers, a conveyor belt, and a frame. The conveyor belt is made of high-strength rubber fabric, with raised edges on its working surface to prevent the tobacco shreds from slipping and rolling on the conveyor belt during high-speed operation, and to ensure the tobacco shreds have a certain initial velocity when ejected. After forming a uniform layer of tobacco shreds on the conveyor belt, they are thrown at a specific speed towards the air separator, achieving separation of the tobacco shreds from the stems. For ease of separation, the tobacco conveyor belt is installed at a 100° angle. The bracket supports the tobacco conveyor belt, and the tension roller, as the tensioning device, mainly consists of a slider and adjusting screws.

[0003] During the long-term use of tobacco conveyor belts, regular bearing replacement is a necessary maintenance measure to ensure the normal operation of the equipment. However, because the gap between the bearing and the drive roller is only 2mm, the bearing disassembly work is extremely difficult, time-consuming, and labor-intensive.

[0004] Currently, common methods for disassembling bearings in conveyor belt systems have many drawbacks. One method involves using two flathead screwdrivers to forcibly pry out the bearing. This violent disassembly method carries significant risks and can easily damage the equipment. Another method involves placing the bearing along with the drive shaft in a vise, clamping the bearing with the vise, and then using a copper rod and a hammer to knock the drive shaft out. This process is complex, carries the risk of damaging the drive shaft, and consumes a lot of manpower and time, severely impacting work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a work roller bearing disassembly device that can conveniently, quickly and safely disassemble the bearing, thereby improving equipment maintenance efficiency and reducing maintenance costs and the risk of equipment damage.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A work roll bearing disassembly device is used to disassemble a bearing on a roll body. The inner ring of the bearing is fitted onto the drive shaft of the roll body. The work roll bearing disassembly device includes a device body, a locking pin, and an ejector pin. The device body has a recessed blind hole with an elastic slit on its wall, which connects to the blind hole. An assembly hole is passed through the bottom of the blind hole. The locking pin is detachably connected to the device body to reduce the distance between the two sides of the elastic slit, thereby reducing the inner diameter of the blind hole. After the inner diameter of the blind hole is reduced, the side wall of the blind hole presses against the outer ring of the bearing. The ejector pin is movably connected to the assembly hole and can move relative to the device body along its length to abut against the drive shaft.

[0008] As an optional technical solution for the work roll bearing disassembly device, the locking pin connects both sides of the tension gap.

[0009] As an optional technical solution for the work roll bearing disassembly device, a locking hole is provided on each side of the tensioning seam, and the locking pin passes through all the locking holes simultaneously along its own length direction.

[0010] As an optional technical solution for the work roll bearing disassembly device, an avoidance groove is provided on each side of the tension gap, and the avoidance groove corresponds one-to-one with the locking hole. The end of the locking hole away from the tension gap is connected to the bottom of the avoidance groove.

[0011] As an optional technical solution for the work roll bearing disassembly device, the length direction of the locking hole is perpendicular to the length direction of the assembly hole.

[0012] As an optional technical solution for the work roll bearing disassembly device, the locking pin includes a first bolt, the bolt having a first external thread, and the locking hole having a first internal thread, wherein the first external thread and the first internal thread are threadedly engaged.

[0013] As an optional technical solution for the work roll bearing disassembly device, the wall of the assembly hole is provided with a second internal thread, the ejector pin includes a second bolt, the screw of the second bolt is provided with a second external thread, and the second external thread is threadedly engaged with the second internal thread.

[0014] As an optional technical solution for the work roll bearing disassembly device, the assembly hole is connected to the tension seam.

[0015] As an optional technical solution for the work roll bearing disassembly device, the length direction of the assembly hole is parallel to the depth direction of the accommodating blind hole.

[0016] As an optional technical solution for the work roll bearing disassembly device, the work roll bearing disassembly device further includes a tensioning component, which is used to tighten or loosen the ejector pin or the locking pin.

[0017] The beneficial effects of this utility model are:

[0018] The main body of this work roll bearing disassembly device features a blind hole to accommodate the bearing outer ring, providing a clear operating space and positioning basis for the entire disassembly process. This allows the device to accurately engage with the bearing, ensuring a more targeted and stable disassembly process. The tension slit, in conjunction with the locking pin, adjusts the distance between the two sides of the tension slit, reducing the inner diameter of the blind hole. Its sidewall presses against the bearing outer ring, ensuring a tight connection between the device body and the bearing outer ring, achieving reliable clamping of the bearing and preventing loosening or displacement during disassembly, thus guaranteeing smooth operation. It also facilitates adaptation to bearings of different sizes, improving the versatility and structural adaptability of the work roll bearing disassembly device. The ejector pin is movably connected to the assembly hole, allowing it to move along its length and abut against the drive shaft. The thrust generated by the movement of the ejector pin smoothly ejects the bearing from the drive shaft, avoiding damage and achieving flexible, non-destructive disassembly. This reduces disassembly time and effort compared to traditional methods, resulting in higher work efficiency. Attached Figure Description

[0019] Figure 1 This is an exploded view of the work roll bearing disassembly device, the roll body, and the bearing provided in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the main body of the device provided in this embodiment of the utility model;

[0021] Figure 3 This is a cross-sectional view of the main body of the device provided in this embodiment of the utility model.

[0022] In the picture:

[0023] 100. Main body of the device; 101. Blind hole for receiving; 102. Elastic joint; 103. Assembly hole; 104. Locking hole; 105. Clearance groove; 200. Ejection pin; 300. Locking pin;

[0024] 800, Roller body; 801, Drive shaft; 900, Bearing. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] like Figures 1 to 3As shown, this embodiment provides a work roll bearing disassembly device for disassembling the bearing 900 on the roll body 800. The inner ring of the bearing 900 is sleeved on the drive shaft 801 of the roll body 800. The work roll bearing disassembly device includes a device body 100, a locking pin 300, and an ejector pin 200. The device body 100 is recessed with a blind hole 101. The wall of the blind hole 101 is provided with an elastic slit 102, which connects to the blind hole 101. The bottom has a through-hole 103; the locking pin 300 is detachably connected to the main body 100 of the device to reduce the distance between the two sides of the tension gap 102, thereby reducing the inner diameter of the blind hole 101. After the inner diameter of the blind hole 101 is reduced, the side wall of the blind hole 101 presses against the outer ring of the bearing 900; the ejector pin 200 is movably connected to the assembly hole 103, and the ejector pin 200 can move relative to the main body 100 along the length direction of the ejector pin 200 to abut against the drive shaft 801.

[0030] The main body 100 of the work roll bearing disassembly device is equipped with a blind hole 101 to accommodate the outer ring of the bearing 900, providing a clear operating space and positioning basis for the entire disassembly process. This allows the work roll bearing disassembly device to accurately engage with the bearing 900, ensuring a more targeted and stable disassembly process. The tension slit 102, in conjunction with the locking pin 300, adjusts the distance between the two sides of the tension slit 102, reducing the inner diameter of the blind hole 101. Its sidewall presses against the outer ring of the bearing 900, ensuring a tight connection between the main body 100 and the outer ring of the bearing 900. This reliable clamping of the bearing 900 prevents loosening or displacement during disassembly, ensuring smooth operation. It also facilitates adaptation to bearings 900 of different sizes, improving the versatility and structural adaptability of the work roll bearing disassembly device. The ejector pin 200 is movably connected to the assembly hole 103 and can move along its length to abut against the drive shaft 801. The thrust generated by the movement of the ejector pin 200 smoothly ejects the bearing 900 from the drive shaft 801, avoiding damage to the drive shaft 801 and achieving flexible and non-destructive disassembly. This reduces the time required to disassemble the bearing 900 and saves time and effort compared to traditional disassembly methods, resulting in high work efficiency.

[0031] In this embodiment, the roller body 800 is a YJ17 ribbon feeding roller, and the bearing 900 is a ball bearing.

[0032] In this embodiment, the locking pin 300 connects both sides of the elastic joint 102.

[0033] The locking pin 300 connects both sides of the tensioning gap 102, which can adjust the distance between the two sides of the tensioning gap 102 more directly and effectively, making the process of reducing the inner diameter of the accommodating blind hole 101 more efficient, improving the clamping efficiency of the main body 100 on the outer ring of the bearing 900, and shortening the operation time.

[0034] Furthermore, each side of the elastic seam 102 is provided with a locking hole 104, and the locking pin 300 passes through all the locking holes 104 simultaneously along its own length.

[0035] Locking holes 104 are provided on both sides of the elastic joint 102. The locking pin 300 passes through all the locking holes 104 along its own length, providing a precise installation position for the locking pin 300. This ensures the accuracy and stability of the installation of the locking pin 300, and makes the device body 100 evenly stressed when adjusting the inner diameter. This ensures that the clamping force on the outer ring of the bearing 900 is evenly distributed, and avoids poor clamping effect due to uneven force.

[0036] Furthermore, each side of the elastic seam 102 is provided with a relief groove 105, which corresponds one-to-one with the locking hole 104. The end of the locking hole 104 away from the elastic seam 102 is connected to the bottom of the relief groove 105.

[0037] The clearance groove 105 provides operating space for the installation and removal of the locking pin 300, avoiding interference between the locking pin 300 and other parts of the device body 100 during installation and removal, and facilitating the use of tools to tighten or loosen the locking pin 300, thus improving the convenience and smoothness of operation.

[0038] For example, the length direction of the locking hole 104 is perpendicular to the length direction of the assembly hole 103.

[0039] By ensuring that the locking force applied by the locking pin 300 and the ejection force applied by the ejector pin 200 are perpendicular to each other, the force transmission is more rational, and the installation and operation of the locking pin 300 and the ejector pin 200 do not interfere with each other. This layout also facilitates the transmission and dispersion of force, making the disassembly process of the device body 100 more stable and reliable. Furthermore, the aforementioned layout ensures that the forces acting on the locking pin 300 and the ejector pin 200 are independent when using the work roller bearing disassembly device, thereby optimizing the stress structure of the device body 100.

[0040] In this embodiment, the locking pin 300 includes a first bolt, the bolt has a first external thread, the locking hole 104 has a first internal thread, and the first external thread and the first internal thread are threadedly engaged.

[0041] The first bolt is used as the locking pin 300, and the connection is achieved through threaded engagement. This not only allows for precise adjustment of the spacing on both sides of the tension gap 102 as needed, but also allows for flexible control of the reduction in the inner diameter of the accommodating blind hole 101 according to the size of different bearings 900 and disassembly requirements. Furthermore, the threaded connection has good self-locking performance, ensuring the stability and reliability of the clamping state. It can also maintain a stable clamping force after adjustment, ensuring that it will not loosen during disassembly.

[0042] For example, the wall of the assembly hole 103 is provided with a second internal thread, the ejector pin 200 includes a second bolt, the shank of the second bolt is provided with a second external thread, and the second external thread is threadedly engaged with the second internal thread.

[0043] The assembly hole 103 and the ejector pin 200 are threaded together. The movement distance along the length direction can be precisely controlled by rotating the ejector pin 200. The ejector force can be applied slowly and stably, thereby precisely controlling the magnitude and speed of the ejector force and achieving precise disassembly of the bearing 900. This avoids damage to the drive shaft 801 due to excessive ejector force and achieves non-destructive disassembly. At the same time, it can better adapt to different disassembly difficulties and working conditions.

[0044] In this embodiment, the assembly hole 103 is connected to the elastic slot 102.

[0045] The assembly hole 103 is connected to the tensioning seam 102, making the structure of the work roller bearing disassembly device more compact, reducing the overall volume, lowering manufacturing costs, and facilitating operators to observe and operate the internal situation during installation and disassembly. When installing the ejector pin 200, its position and status can be more intuitively confirmed, improving the accuracy of operation and reducing the complexity of operation.

[0046] For example, the length direction of the assembly hole 103 is parallel to the depth direction of the accommodating blind hole 101.

[0047] The length direction of the assembly hole 103 is parallel to the depth direction of the accommodating blind hole 101, ensuring that the ejection force applied by the ejector pin 200 is consistent with the disassembly direction of the bearing 900, reducing force loss and offset, improving ejection efficiency, and enabling the bearing 900 to be smoothly disassembled from the drive shaft 801, avoiding disassembly difficulties or damage caused by deviation in the ejection force direction.

[0048] In this embodiment, the work roller bearing disassembly device further includes a tightening component, which is used to tighten or loosen the ejector pin 200 or the locking pin 300. Specifically, the tightening component is an Allen wrench.

[0049] The adjustable tension mechanism facilitates the tightening and loosening of the ejector pin 200 or locking pin 300, allowing for more labor-saving and efficient operation with the aid of tools, thus reducing the workload of operators. In situations requiring frequent adjustment of the ejector pin 200 or locking pin 300, it saves time and manpower, improving overall disassembly efficiency.

[0050] This embodiment also provides a method for disassembling a work roll bearing, applied to the aforementioned work roll bearing disassembly device, comprising the following steps:

[0051] Fit the main body 100 onto the outer ring of the bearing 900; tighten the locking bolts on the main body 100 to connect the bearing 900 and the main body 100 into a single unit; slowly tighten the bolts with an Allen wrench to disengage the main body 100 and the bearing 900 from the transmission shaft; loosen the locking bolts with an Allen wrench and remove the bearing 900 from the main body 100 to complete the disassembly process.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A work roll bearing disassembly device for disassembling a bearing (900) on a roll body (800), wherein the inner ring of the bearing (900) is sleeved on a drive shaft (801) of the roll body (800), characterized in that, The work roll bearing disassembly device includes: The main body (100) of the device is recessed with a blind hole (101). The wall of the blind hole (101) is provided with an elastic slit (102). The elastic slit (102) connects to the blind hole (101). An assembly hole (103) is passed through the bottom of the blind hole (101). A locking pin (300) is detachably connected to the main body (100) of the device to reduce the distance between the two sides of the tension gap (102), thereby reducing the inner diameter of the accommodating blind hole (101), and after the inner diameter of the accommodating blind hole (101) is reduced, the side wall of the accommodating blind hole (101) presses against the outer ring of the bearing (900). The ejector pin (200) is movably connected to the assembly hole (103). The ejector pin (200) can move relative to the device body (100) along the length direction of the ejector pin (200) to abut against the drive shaft (801).

2. The work roll bearing puller device of claim 1, wherein, The locking pin (300) connects both sides of the elastic joint (102).

3. The work roll bearing puller device of claim 2, wherein, Each side of the elastic seam (102) is provided with a locking hole (104), and the locking pin (300) passes through all the locking holes (104) simultaneously along its own length direction.

4. The work roll bearing puller device of claim 3, wherein, Each side of the elastic seam (102) is provided with a relief groove (105), and the relief groove (105) corresponds one-to-one with the locking hole (104). The end of the locking hole (104) away from the elastic seam (102) is connected to the bottom of the relief groove (105).

5. The work roll bearing puller device of claim 3 wherein, The length direction of the locking hole (104) is perpendicular to the length direction of the assembly hole (103).

6. The work roll bearing puller device of claim 3 wherein, The locking pin (300) includes a first bolt, the bolt having a first external thread, and the locking hole (104) having a first internal thread on its wall, the first external thread engaging with the first internal thread.

7. The work roll bearing puller device of claim 1 wherein, The assembly hole (103) has a second internal thread on its wall, and the ejector pin (200) includes a second bolt. The bolt has a second external thread, and the second external thread is threadedly engaged with the second internal thread.

8. The work roll bearing puller device of claim 1 wherein, The assembly hole (103) is connected to the elastic seam (102).

9. The work roll bearing dismounting device according to claim 1, characterized in that The length direction of the assembly hole (103) is parallel to the depth direction of the accommodating blind hole (101).

10. The work roll bearing dismounting device according to any one of claims 1 to 9, characterized in that The work roll bearing disassembly device also includes a tensioning element, which is used to tighten or loosen the ejector pin (200) or the locking pin (300).

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