A roller dismounting device for roller maintenance

Abstract

The utility model discloses a kind of dismounting devices for roller maintenance, to solve the problem that the contact area of ejector rod and roller end face is small in the puller device commonly used for dismounting roller bearing, and local stress concentration leads to shaft end face indentation deformation and ejector rod wear.The device includes rack, hook claw, driving rod and ejector rod assembly, and the abutting cylinder in the ejector rod assembly is rotatably arranged at the end of driving rod, and a suction cup assembly that can be adsorbed on the end face of roller is arranged at the end away from the driving rod, a friction ring that can axially slide is sleeved on the abutting cylinder, and the position is locked by locking structure, and the friction ring is provided with inverted "V" shaped elastic wear-resistant annular protrusion to form annular friction surface.The driving rod and the abutting cylinder are rotatably connected by connecting bearing.The device uniformly distributes axial force through large-area surface contact of suction cup assembly, avoids local stress concentration, and the friction ring enhances adsorption stability;Connecting bearing rotary connection avoids rotary friction, effectively protects roller end face and ejector rod, improves dismounting efficiency and reliability, and prolongs equipment service life.

Description

Technical Field

[0001] This utility model relates to the technical field of roller conveyor disassembly tools, and in particular to a disassembly device for roller conveyor maintenance. Background Technology

[0002] A roller conveyor is a conveying device composed of multiple sets of rollers, mainly used for the automated transfer of materials in industrial production. Its core function is to efficiently and stably transfer objects from one position to another through the rotation or sliding of the rollers. It is widely used in steel rolling, logistics, ceramics, glass, automobile manufacturing and other fields.

[0003] The rollers on a roller conveyor mainly consist of a shaft, a cylinder, and bearings. After prolonged operation, these components may experience wear and tear, loosening of fits, and other problems that affect the normal operation of the conveyor equipment. Therefore, to ensure the normal operation of the roller conveyor, its components need to be disassembled for repair and replacement periodically using a roller conveyor maintenance disassembly device. Bearings, being the most frequently replaced component, require quick and easy disassembly, making this a key concern for industry professionals.

[0004] In existing roller conveyors, bearings are often disassembled using pullers as a common disassembly device for roller conveyor maintenance. The structure mainly includes a push rod, claw hooks, a bracket, and a screw. The push rod has a center point at its end to hold the center hole of the shaft end. Three adjustable claw hooks are connected to the bracket via pins and can be radially retracted or opened to accommodate bearings of different diameters. Then, by driving the screw to rotate, the bracket is moved away from the push rod, thereby separating the bearing from the shaft.

[0005] However, the ends of the push rods of existing pullers are mostly conical or flat cylindrical, and their contact area with the end face of the roller is too small. This causes local stress concentration on the end face of the roller during the disassembly of the bearing, which causes the push rod to cause indentation and deformation on the end face of the shaft, affecting the use of the roller. In addition, the push rod is also prone to wear and deformation, affecting the service life of the product. Utility Model Content

[0006] The main purpose of this utility model is to provide a disassembly device for roller conveyor maintenance. By setting a suction cup assembly that can be adsorbed onto the end face of the roller in the push rod assembly, and in conjunction with a friction ring and locking structure, a large-area uniform contact between the push rod and the end face of the roller is achieved, the axial load is dispersed, and the shaft end face indentation, deformation and push rod wear caused by local stress concentration are avoided.

[0007] To achieve the above objectives, this utility model proposes a disassembly device for roller conveyor maintenance, including a frame and several hooks disposed around the frame, and a drive rod. The frame is disposed on the drive rod and one end of the frame is connected to a drive unit for axially sliding the frame relative to the drive rod. The other end of the frame is provided with a push rod assembly. The push rod assembly includes an abutment cylinder rotatably disposed at the end of the drive rod. The end of the abutment cylinder away from the drive rod is provided with a suction cup assembly, which can be adsorbed onto the end face of the roller.

[0008] In one possible implementation, the end face of the abutment cylinder is provided with a snap-fit ​​groove, and the suction cup assembly includes a connecting strip snapped into the snap-fit ​​groove, with a suction cup body provided on the connecting strip.

[0009] In one possible implementation, the drive rod and the abutment cylinder are rotatably connected via a connecting bearing.

[0010] In one possible implementation, a friction ring is fitted onto the abutment cylinder, the friction ring being axially slidable relative to the abutment cylinder. When the suction cup assembly is adsorbed onto the end face of the roller, the friction ring can slide towards the suction cup assembly to press the edge of the suction cup assembly tightly against the end face of the roller. The system also includes a locking structure for locking the axial position of the friction ring on the abutment cylinder.

[0011] In one possible implementation, the friction ring has a plurality of annular protrusions on one end face of the suction cup assembly, and the plurality of annular protrusions form a friction surface on the end face of the friction ring.

[0012] In one possible implementation, several of the annular protrusions are made of abrasion-resistant rubber that is elastically deformable.

[0013] In one possible implementation, the annular protrusion has an inverted "V" shaped cross-section.

[0014] In one possible implementation, the friction surface is annular and located at the junction of the suction cup assembly and the end face of the roller.

[0015] In summary, the beneficial effects of this application are as follows:

[0016] Compared with the prior art, this application provides a suction cup assembly at the end of the push rod assembly that can be adsorbed onto the end face of the roller. By using the large-area surface contact between the suction cup body and the end face of the roller to replace the point contact or small-area contact of the traditional push rod, the axial force transmitted by the push rod during disassembly can be evenly distributed on the end face of the roller. This effectively avoids the problems of shaft end face indentation, deformation and push rod wear caused by local stress concentration, and significantly improves the service life of the roller and disassembly device.

[0017] Meanwhile, the rotating bearing connection between the drive rod and the contact cylinder allows the contact cylinder to rotate freely relative to the drive rod, preventing friction from the suction cup assembly caused by the drive rod's rotation and further protecting the roller end face from wear. Attached Figure Description

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

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 This is a cross-sectional view of the suction cup assembly of this utility model;

[0022] Figure 4 for Figure 3 A magnified view of a section at point B in the middle.

[0023] Explanation of icon numbers:

[0024] 1. Frame; 2. Claw; 3. Drive rod; 4. Drive unit; 5. Push rod assembly; 50. Abutment cylinder; 51. Suction cup assembly; 510. Connecting bar; 511. Suction cup body; 53. Connecting bearing; 6. Friction ring; 7. Friction surface; 8. Annular protrusion.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] like Figure 1-4 As shown, this utility model proposes a disassembly device for roller conveyor maintenance, including a frame 1 and a plurality of hooks 2 disposed around the periphery of the frame 1, such as... Figure 1-2 As shown, in this embodiment, there are 3 hooks 2, which are hinged to the connecting rods on the periphery of the frame 1. The hooks 2 can be used to hook the bearings fixedly connected to the rollers; thus, when the frame 1 is driven away from the rollers, the bearings can be driven to disengage from the rollers.

[0028] A drive rod 3 is also provided on the frame 1. The drive rod 3 can be slidably connected to the frame 1 or threadedly connected. One end of the drive rod 3 is connected to a drive unit 4 for axially sliding the frame 1 relative to the drive rod 3, and the other end is provided with a push rod assembly 5. The drive unit 4 can be a grip for easy manual rotation by the user, a servo motor, or a hydraulic telescopic rod. If a hydraulic telescopic rod is used, the drive rod 3 and the frame 1 must slide together. In this embodiment, the drive unit 4 is a grip, and the drive rod 3 and the frame 1 are threaded together. When the user uses it, they can rotate the drive rod 3 by gripping the grip, thereby allowing the frame 1 to slide axially relative to the roller.

[0029] To ensure that the device does not damage the end face of the roller during the bearing disassembly process, a push rod assembly 5 is rotatably connected to one end of the push rod, such as... Figure 2-3 As shown, it includes an abutment cylinder 50 disposed at the end of the drive rod 3, and a suction cup assembly 51 disposed at the end of the abutment cylinder 50 away from the drive rod 3, which can be adsorbed onto the end face of the roller.

[0030] Specifically, the suction cup assembly 51 is connected to the drive rod 3 via an abutment cylinder 50 rotatably mounted at the end of the drive rod 3. A snap-fit ​​groove is provided on the end face of the abutment cylinder. The suction cup assembly 51 includes a connecting strip 510 snapped into the snap-fit ​​groove. A suction cup body 511 is provided on the connecting strip 510. The suction cup body 511 is made of elastic silicone material and can fit tightly against the end face of the roller shaft. When the user presses the suction cup body 511 tightly against the end face of the roller, the air between the suction cup body 511 and the end face of the roller will be discharged, thereby forming a vacuum state. This allows the suction cup body 511 to be stably adsorbed on the end face of the roller. By using the large-area surface contact between the suction cup body 511 and the end face of the roller shaft to replace the point contact or small-area contact of the traditional push rod, the axial force transmitted by the push rod during the disassembly process can be evenly distributed on the end face of the roller shaft. This effectively avoids the problems of shaft end face indentation, deformation and push rod wear caused by local stress concentration, and significantly improves the service life of the roller shaft and the disassembly device.

[0031] Meanwhile, the abutting cylinder 50 and the drive rod 3 are rotated together by the connecting bearing 53, which allows the abutting cylinder 50 to rotate freely relative to the drive rod 3. This prevents the drive rod 3 from rotating and causing the suction cup assembly 51 to rotate, which would cause the suction cup assembly 51 to detach from the roller. It also prevents friction between the suction cup assembly 51 and the roller, further protecting the roller shaft end face from wear.

[0032] And such Figure 2-3As shown, to further improve the stability between the push rod and the roller end face, a friction ring 6 is sleeved on the abutment cylinder 50. The friction ring 6 can slide axially relative to the abutment cylinder 50. When the suction cup assembly 51 is adsorbed onto the roller end face, the friction ring 6 can slide towards the suction cup assembly 51 to press the edge of the suction cup assembly 51 tightly against the roller end face. A locking structure is also included to lock the axial position of the friction ring 6 on the abutment cylinder 50. The locking structure adopts a threaded connection structure, with the friction ring 6 threadedly connected to the outside of the abutment cylinder 50. By rotating the friction ring 6, it can be driven to move away from or towards the suction cup assembly 51. After the suction cup assembly 51 initially adheres to the roller end face, rotating the friction ring 6 causes it to move towards the suction cup assembly 51 along the thread on the outside of the abutment cylinder 50. The end face of the friction ring 6 presses the edge of the suction cup assembly 51 tightly against the roller end face. Utilizing the mechanical transmission characteristics of the threaded connection, the rotational motion is converted into axial displacement, achieving uniform pressure on the edge of the suction cup. Because of the self-locking characteristic of the threaded structure, the clamping force can be precisely adjusted by controlling the number of rotations of the friction ring 6, ensuring the fit between the suction cup body 511 and the shaft end face. Furthermore, the cooperation between the friction ring 6 and the threaded locking structure upgrades the suction cup's "flexible adsorption" to a dual fixing mechanism of "adsorption + mechanical clamping," effectively solving the problems of easy suction cup detachment and easy top rod misalignment under complex working conditions. During bearing disassembly on the roller conveyor, this structure ensures that the top rod axis and the roller axis remain coaxial, preventing uneven bearing stress or journal damage caused by uneven loading. Simultaneously, the uniform edge clamping force makes the suction force of the suction cup more evenly distributed, further dispersing the axial load transmitted by the top rod, reducing local stress concentration on the shaft end face, and improving the stability and reliability of the disassembly process.

[0033] like Figure 4 As shown, the friction ring 6 has several annular protrusions 8 with an inverted "V" shaped cross-section on one end face of the suction cup assembly 51. The several annular protrusions 8 form a friction surface 7 on the end face of the friction ring 6. It is annular and located at the junction of the suction cup assembly 51 and the end face of the roller. The annular protrusions 8 are made of wear-resistant rubber and can be elastically deformed.

[0034] When the friction ring 6 slides toward the suction cup assembly 51 under axial force, the inverted "V"-shaped protrusion generates radial expansion force due to elastic deformation, causing its two inclined surfaces to tightly adhere to the micro-concave-convex structure of the roller shaft end face, forming a continuous annular friction surface 7. This friction surface 7 is located at the junction area between the edge of the suction cup body 511 and the shaft end face, precisely covering the boundary position where the adsorption force is easily attenuated. When the friction ring 6 slides axially along the abutment cylinder 50 and presses against the edge of the suction cup, the inverted "V"-shaped protrusion deforms due to its elastic properties, causing the contact area between the friction ring 6 and the roller end face to increase with the increase of deformation, thereby preventing the position of the push rod assembly 5 from shifting during operation and ensuring the stability of the position of the push rod assembly 5.

[0035] Meanwhile, the friction surface 7 is located at the junction of the edge of the suction cup body 511 and the shaft end face, precisely covering the boundary position where the adsorption force is easily weakened. The annularly distributed protrusions form a continuous mechanical constraint boundary, applying a uniform radial clamping force to the suction cup body 511, making the adhesion stress distribution between the suction cup and the shaft end face more uniform, and making the contact between the edge of the suction cup and the shaft face tighter. This significantly enhances the static friction between the two, suppresses relative sliding caused by vibration or off-center loading during disassembly, and reduces adsorption failure caused by stress concentration in local areas. Ultimately, it effectively solves the problems of edge sealing failure and insufficient connection reliability caused by uneven shaft surface roughness, slight deformation, or environmental factors in traditional suction cup assemblies 51. It ensures that the push rod always remains coaxial with the roller shaft when transmitting axial force, avoiding uneven force on the roller bearing or damage to the journal caused by push rod misalignment.

[0036] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A disassembly device for roller conveyor maintenance, comprising a frame (1) and a plurality of hooks (2) disposed around the periphery of the frame (1), and further comprising a drive rod (3), wherein the frame (1) is disposed on the drive rod (3) and one end of the frame (1) is connected to a drive unit (4) for axially sliding the frame (1) relative to the drive rod (3), and the other end is provided with a push rod assembly (5), characterized in that, The top rod assembly (5) includes an abutment cylinder (50) rotatably disposed at the end of the drive rod (3). A suction cup assembly (51) is provided at the end of the abutment cylinder (50) away from the drive rod (3). The suction cup assembly (51) can be adsorbed onto the end face of the roller.

2. The device according to claim 1, characterized in that, The end face of the abutment cylinder (50) is provided with a snap-fit ​​groove, and the suction cup assembly (51) includes a connecting strip (510) snapped into the snap-fit ​​groove, and a suction cup body (511) is provided on the connecting strip (510).

3. The device according to claim 1, characterized in that, The drive rod (3) and the abutment cylinder (50) are rotatably connected by a connecting bearing (53).

4. The device according to claim 3, characterized in that, A friction ring (6) is sleeved on the abutment cylinder (50). The friction ring (6) can slide axially relative to the abutment cylinder (50). When the suction cup assembly (51) is adsorbed onto the end face of the roller, the friction ring (6) can slide towards the suction cup assembly (51) to press the edge of the suction cup assembly (51) tightly against the end face of the roller. It also includes a locking structure, which is used to lock the axial position of the friction ring (6) on the abutment cylinder (50).

5. A device for removing a roller bed according to claim 4, characterized in that The friction ring (6) has a plurality of annular protrusions (8) on one end face of the suction cup assembly (51), and the plurality of annular protrusions (8) form a friction surface (7) on the end face of the friction ring (6).

6. A device for removing a roller bed according to claim 5, characterized in that Several of the aforementioned annular protrusions (8) are made of wear-resistant rubber and are elastically deformable.

7. A device for removing a roller bed according to claim 6, characterized in that The annular protrusion (8) has an inverted "V" shaped cross-section.

8. A device for removing a roller bed according to claim 7, characterized in that The friction surface (7) is annular and is located at the junction of the suction cup assembly (51) and the end face of the roller.

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