An improved tail wheel for a paint line conveyor belt

Abstract

The utility model belongs to mechanical equipment technical field relates to an improved structure of paint line conveying belt tail wheel, including roller, shaft sleeve, bearing, shaft and baffle ring, wherein, the roller both ends inner wall fixed setting has the base ring, shaft sleeve is detachably fixed and installed on the base ring through fastener, the interference fit between the outer wall of shaft sleeve and the inner wall of roller, at least one dismounting threaded hole is provided on the end face of shaft sleeve, the dismounting threaded hole is used for when dismounting screwing into bolt, and the shaft sleeve is pushed out from the roller through the end face of bolt jacking base ring, the baffle ring is installed on the shaft and is located one side in bearing inner race, the improved structure of paint line conveying belt tail wheel disclosed by the utility model has better integrity, simple structure, no security risk, is easy to process into the shape, adapts the requirement that conveying belt equipment high -speed operation, structure satisfies the mechanical property requirement such as bearing capacity and rigidity, maintenance cost is low, overcomes the defect of original tail wheel structure.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology, and relates to conveyor belts, and more particularly to an improved structure of the tail pulley of a paint line conveyor belt. Background Technology

[0002] The tail pulley structures of all conveyor equipment on a multi-layer solid wood flooring painting production line are basically the same, consisting of rollers, bushings, bearings, retaining rings, and shafts. The bushings and roller bodies are welded together to form a single unit, and then machined to achieve the required shape and concentricity. In actual use, the high tension of the conveyor belt exerts significant pressure on the tail pulley bearings. This can easily cause loosening of the fit between the bearing outer ring and the bushing inner hole. Loosening leads to frictional noise and accelerated wear, ultimately causing the tail pulley to malfunction.

[0003] Conveyor belt equipment constitutes a significant portion of floor paint production lines, and repairing a failed tail pulley typically requires replacing the entire tail pulley assembly. Because the tail pulley comprises rollers, bushings, bearings, shafts, and other components, its complex structure makes complete replacement problematic. This presents several significant drawbacks: 1) Long repair time: The entire tail pulley needs to be disassembled, and waiting for external suppliers to process or provide a new one is required. 2) High repair costs: Replacing the entire tail pulley is significantly more expensive than replacing only critical wear parts (such as bushings or shafts). 3) High spare parts inventory pressure: A certain number of complete tail pulleys need to be stockpiled as spare parts, tying up capital and storage space. 4) Cumulative error risk: Repeated disassembly and reassembly of the entire tail pulley can lead to wear on the equipment's mounting reference surface or a decrease in positioning accuracy, resulting in cumulative errors. These issues severely impact the output, quality, and operating costs of floor paint production lines. Summary of the Invention

[0004] In view of the problems of complex tail pulley structure and high maintenance cost in the existing technology, the purpose of this utility model is to disclose an improved structure of the tail pulley of the paint line conveyor belt.

[0005] Technical solution

[0006] An improved structure for the tail pulley of a paint production line conveyor includes a roller, a bushing, a bearing, a shaft, and a retaining ring. The roller has base rings fixedly mounted on its inner walls at both ends. The bushing is detachably fixed to the base rings using fasteners. The outer wall of the bushing is interference-fitted with the inner wall of the roller. At least one disassembly threaded hole is provided on the end face of the bushing, allowing a bolt to be screwed in during disassembly. The bolt pushes against the end face of the base ring, ejecting the bushing from the roller. The retaining ring is mounted on the shaft, located on one side of the inner ring of the bearing.

[0007] In a preferred embodiment of this utility model, the roller is a seamless steel pipe.

[0008] In a preferred embodiment of this utility model, the base ring is welded and fixed to the inner wall of the roller.

[0009] In a preferred embodiment of this utility model, the fastener is a bolt, and more specifically, the bolt is an internal hex bolt.

[0010] In a preferred embodiment of this utility model, the base ring is provided with a plurality of fixed threaded holes, and the bushing is provided with a corresponding through hole. The fastener passes through the through hole on the bushing and is screwed into the fixed threaded hole of the base ring to fix the two together.

[0011] Bolts resist circumferential rotational forces or minute axial displacements that may occur during the operation of the bushing.

[0012] In a preferred embodiment of this utility model, the number of the fixed threaded holes on the base ring and the number of through holes on the bushing are four, which are evenly distributed along the circumferential direction.

[0013] In a preferred embodiment of this utility model, the number of disassembly threaded holes is two, symmetrically arranged on the end face of the bushing.

[0014] In a preferred embodiment of this utility model, the interference fit is 0.02mm-0.05mm to ensure assembly concentricity and provide initial positioning.

[0015] The key to improving the structure is to fix base rings on the inner walls of both ends of the roller, and to detachably fix the bushings to the base rings with bolts, and to provide disassembly threaded holes on the end face of the bushings.

[0016] In use, the rough-machined blank of the base ring is first placed in the designated position on the seamless steel pipe roller and welded to form a whole. Then, it is precision-machined to meet the specified technical requirements. The bushing is then pressed into the roller using hexagonal socket head cap screws. There is a slight interference fit between the bushing and the roller, which effectively ensures the concentricity of the inner hole of the bushing and the two ends of the roller after press-fitting. When wear and loosening occur at the bearing and bushing mating position, the bushing can be pushed out with bolts using the pre-set disassembly threaded hole on the end face of the bushing for replacement. There is no need to replace the entire tail pulley, nor is it necessary to keep a certain number of tail pulleys on hand, thus saving inventory.

[0017] Beneficial effects

[0018] The improved structure of the tail pulley for the paint line conveyor belt disclosed in this utility model has good overall integrity, simple structure, no safety risks, is easy to process and form, adapts to the requirements of high-speed operation of conveyor belt equipment, and the structure meets the mechanical performance requirements such as load-bearing capacity and rigidity, thus overcoming the defects of the original tail pulley structure. Attached Figure Description

[0019] Figure 1 The original conveyor belt tail pulley structure remains unchanged.

[0020] Figure 2 An improved structure for the conveyor belt tail pulley;

[0021] Figure 3 Detailed view of the roller end;

[0022] Figure 4 A schematic diagram of the base ring components;

[0023] Figure 5 A schematic diagram of the bushing parts;

[0024] The components are labeled as follows: 1. Roller, 2. Base ring, 3. Bushing, 4. Bolt, 5. Disassembly threaded hole, 6. Bearing, 7. Shaft, 8. Retaining ring, 9. Through hole, 10. Fixing threaded hole. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the embodiments, so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0026] Example 1

[0027] An improved structure for the tail pulley of a paint production line conveyor includes a roller 1, a bushing 3, a bearing 6, a shaft 7, and a retaining ring 8. A base ring 2 is fixedly mounted on the inner walls of both ends of the roller 1. The bushing 3 is detachably fixed to the base ring 2 by fasteners. The outer wall of the bushing 3 is interference-fitted with the inner wall of the roller 1. At least one disassembly threaded hole 5 is provided on the end face of the bushing 3, which is used to screw in a bolt during disassembly. The bolt pushes the end face of the base ring 2 to eject the bushing 3 from the roller 1. The retaining ring 8 is mounted on the shaft 7 and located on one side of the inner ring of the bearing 6.

[0028] Example 2

[0029] An improved structure for the tail pulley of a paint production line conveyor includes a roller 1, a bushing 3, a bearing 6, a shaft 7, and a retaining ring 8. The roller 1 is a seamless steel pipe with base rings 2 fixedly mounted on the inner walls of both ends. The base rings 2 are welded to the inner walls of the roller 1. The bushing 3 is detachably mounted on the base rings 2 using fasteners, specifically bolts 4. The outer wall of the bushing 3 is interference-fitted with the inner wall of the roller 1. At least one disassembly threaded hole 5 is provided on the end face of the bushing 3, used to screw in a bolt during disassembly. The bolt pushes the end face of the base ring 2, ejecting the bushing 3 from the roller 1. The retaining ring 8 is mounted on the shaft 7, located on one side of the inner ring of the bearing 6. The interference fit is 0.02mm-0.05mm to ensure concentricity during assembly and provide initial positioning.

[0030] Example 3

[0031] An improved structure for the tail pulley of a paint production line conveyor belt includes a roller 1, a bushing 3, a bearing 6, a shaft 7, and a retaining ring 8. The roller 1 is a seamless steel pipe, with base rings 2 fixedly mounted on the inner walls of both ends. The base rings 2 are welded and fixed to the inner walls of the roller 1. The bushing 3 is detachably fixed to the base rings 2 by fasteners, specifically bolts 4. The outer wall of the bushing 3 is interference-fitted with the inner wall of the roller 1. The base rings 2 have several threaded holes 10, and the bushing 3 has corresponding through holes. 9. The bolt 4 passes through the through hole 9 on the bushing 3 and is screwed into the fixing threaded hole 10 of the base ring 2 to fix the two together; at least one disassembly threaded hole 5 is provided on the end face of the bushing 3, the disassembly threaded hole 5 is used to screw in the bolt during disassembly, and the bushing 3 is pushed out of the roller 1 by the bolt pushing the end face of the base ring 2; the retaining ring 8 is installed on the shaft 7 and is located on one side of the inner ring of the bearing 6; the interference fit is 0.02mm-0.05mm to ensure assembly concentricity and provide initial positioning.

[0032] Example 4

[0033] An improved structure for the tail pulley of a paint production line conveyor belt includes a roller 1, a bushing 3, a bearing 6, a shaft 7, and a retaining ring 8. The roller 1 is a seamless steel pipe, with base rings 2 fixedly mounted on the inner walls of both ends. The base rings 2 are welded and fixed to the inner walls of the roller 1. The bushing 3 is detachably fixed to the base rings 2 by fasteners, specifically bolts 4. The outer wall of the bushing 3 is interference-fitted with the inner wall of the roller 1. The base rings 2 have four threaded holes 10 evenly distributed along the circumference. The bushing 3 has corresponding through holes 9. The bolt 4 passes through the through hole 9 on the bushing 3 and is screwed into the fixing threaded hole 10 of the base ring 2 to fix the two together; two disassembly threaded holes 5 are provided on the end face of the bushing 3, symmetrically arranged on the end face of the bushing 3; the disassembly threaded holes 5 are used to screw in the bolt during disassembly, and the bushing 3 is pushed out of the roller 1 by the bolt pushing the end face of the base ring 2; the retaining ring 8 is installed on the shaft 7 and located on one side of the inner ring of the bearing 6; the interference fit is 0.02mm-0.05mm to ensure assembly concentricity and provide initial positioning.

[0034] like Figure 2 and Figure 3 As shown, base rings 2 are welded and fixed to the inner walls at both ends of roller 1. Figure 4 As shown, four evenly distributed fixed threaded holes 10 are machined on the base ring 2. Figure 5 As shown, the bushing 3 has four through holes 9 and two symmetrically arranged disassembly threaded holes 5 machined on it.

[0035] During assembly, first press the bushing 3 into the roller 1 with an interference fit of 0.02mm-0.05mm, so that its end face fits against the base ring 2. Figure 2 Then, screw bolt 4 through the through hole 9 into the fixing threaded hole 10 of the base ring 2 and tighten it. Figure 2 ).

[0036] During maintenance, such as Figure 2 As shown, unscrew bolt 4, screw the ejector bolt into disassembly thread 5, push the base ring 2 toward the end face of bushing 3, and eject the worn bushing 3.

[0037] The above-described embodiments are merely specific implementations of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the description of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An improved structure for the tail pulley of a paint production line conveyor belt, comprising a roller (1), a bushing (3), a bearing (6), a shaft (7), and a retaining ring (8), characterized in that: The inner walls of both ends of the roller (1) are fixedly provided with base rings (2); the bushing (3) is detachably fixed on the base ring (2) by fasteners; the outer wall of the bushing (3) and the inner wall of the roller (1) are interference fit; at least one disassembly threaded hole (5) is provided on the end face of the bushing (3), the disassembly threaded hole (5) is used to screw in a bolt during disassembly, and the bushing (3) is pushed out of the roller (1) by the bolt pushing the end face of the base ring (2); the retaining ring (8) is installed on the shaft (7) and located on one side of the inner ring of the bearing (6).

2. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, characterized in that: The roller (1) is a seamless steel pipe.

3. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, characterized in that: The base ring (2) is welded and fixed to the inner wall of the roller (1).

4. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, characterized in that: The fastener is a bolt (4).

5. The improved structure of the tail pulley of the paint line conveyor belt according to claim 4, characterized in that: The bolt (4) is an internal hex bolt.

6. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, characterized in that: The base ring (2) is provided with a plurality of fixed threaded holes (10), and the bushing (3) is provided with corresponding through holes (9).

7. The improved structure of the tail pulley of the paint line conveyor belt according to claim 6, characterized in that: The number of fixed threaded holes (10) on the base ring (2) and through holes (9) on the bushing (3) are four, and they are evenly distributed along the circumference.

8. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, 6, or 7, characterized in that: The fastener passes through the through hole (9) on the bushing (3) and screws into the fixing threaded hole (10) of the base ring (2) to fix the two together.

9. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, characterized in that: The number of disassembly threaded holes (5) is two, which are symmetrically arranged on the end face of the bushing (3).

10. The improved structure of the tail pulley of the paint line conveyor belt according to claim 1, characterized in that: The interference fit is 0.02mm-0.05mm.

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