CN221248669U - Roller end cover dismounting device - Google Patents

Abstract

The utility model discloses a roller end cover disassembly device, comprising a plate body (1), wherein both ends of the plate body (1) are respectively provided with an expansion connection assembly (2), a threaded hole (3) is provided at the center of the plate body (1), and a push rod (4) is installed in the threaded hole (3). The utility model can realize the rapid disassembly of the roller dustproof end cover without being restricted by the disassembly site and tools, and at the same time avoids the damage to the inner wall of the roller caused by knocking and disassembly.

Description

Roller end cover removal device

Technical Field

The utility model relates to a disassembly tool, in particular to a disassembly device for an end cover of a roller.

Background technique

Rollers need to be installed on belt conveyors to support the weight of the conveyor belt and materials. The structure of the roller is generally composed of a hollow roller, a shaft and a bearing. Bearings are installed at both ends of the shaft and then fixed to the roller. Due to the processing technology of the leaf threshing and redrying production line, there is a lot of dust on site. In order to extend the service life of the bearings, the installed rollers need to be equipped with dustproof end covers on the outside of the bearings. The dustproof end cover is embedded and fixed to the inner wall of the roller drum with an interference fit. Two symmetrical observation holes are set on the end cover to facilitate observation of the operation of the internal bearings during daily inspections.

During the maintenance process, if the bearing needs to be replaced, the end cover must be removed first. Since the end cover is installed inline, there is no force point. The only way is to use a copper rod to knock from one end to knock the bearing and the end cover out from the other end. Due to the interference fit, this process is time-consuming and laborious, and may damage the inner wall of the roller.

The knocking disassembly method is less efficient, as the rollers need to be fixed by a vise before being knocked out, which is greatly limited by the site and tools. On the other hand, using a vise to fix the rollers can easily cause deformation or damage to the rollers. During the knocking process, it is also difficult to avoid the end cover scratching the inner wall of the drum during vibration and movement.

Utility Model Content

The utility model aims to provide a roller end cover disassembly device to solve the technical problems in the prior art. The utility model can realize the rapid disassembly of the roller dustproof end cover without being restricted by the disassembly site and tools, and at the same time avoids the damage to the inner wall of the roller caused by knocking and disassembly.

The utility model provides a roller end cover disassembly device, comprising a plate body, wherein two ends of the plate body are respectively provided with an expansion connection assembly, a threaded hole is opened at the center of the plate body, and a push rod is threadedly installed in the threaded hole.

In the aforementioned roller end cover disassembly device, preferably, the expansion connection assembly structure at both ends of the plate body is exactly the same, and the expansion connection assembly includes an expansion sleeve, a pulling bolt and a conical pulling head. One end of the expansion sleeve is fixedly connected to the plate body, and the other end of the expansion sleeve is formed with a plurality of elastic expansion sheets. The pulling bolt passes through the expansion sleeve, and the conical pulling head is fixedly provided at one end of the pulling bolt close to the elastic expansion sheet.

In the aforementioned roller end cover disassembly device, preferably, a threaded sleeve is fixedly provided at each end of the plate body, the expansion sleeve is plug-connected with the threaded sleeve, the two are interference fit, and the pull bolt is threadedly connected with the threaded sleeve.

In the aforementioned roller end cover disassembly device, preferably, one end of the push rod is a conical structure.

In the aforementioned roller end cover disassembly device, preferably, a rotating handle is vertically mounted on the other end of the push rod.

In the aforementioned roller end cover disassembly device, preferably, the plate body is a rectangular parallelepiped structure.

Compared with the prior art, the utility model includes a plate body, and an expansion connection assembly is respectively arranged at both ends of the plate body. A threaded hole is opened at the center of the plate body, and a push rod is installed in the threaded hole. The utility model can be connected with two observation holes on the roller end cover through two expansion connection assemblies, and then the plate body can contact the rotating shaft through the two expansion connection assemblies by rotating the tightening knob, so that the roller end cover can be pulled out without damaging the roller end cover or the inner wall of the roller, which greatly improves the disassembly efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is an axonometric view of the present utility model.

Explanation of the reference numerals: plate body 1, expansion connection assembly 2, threaded hole 3, push rod 4, expansion sleeve 5, puller bolt 6, conical pulling head 7, elastic expansion sheet 8, threaded sleeve 9, rotating handle 10.

Detailed ways

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

An embodiment of the utility model: as shown in Figure 1, a roller end cover disassembly device includes a plate body 1, the plate body 1 is a rectangular structure, an expansion connection assembly 2 is respectively provided at both ends of the plate body 1, a threaded hole 3 is opened at the center position of the plate body 1, and a push rod 4 is installed in the threaded hole 3.

The two expansion connection components 2 are used to connect the two observation holes on the roller end cover, and the push rod 4 is used to push the rotating shaft. The roller end cover is pulled out through the two expansion connection components 2 to achieve the disassembly purpose.

In a specific embodiment, the expansion connection assembly 2 at both ends of the plate body 1 has exactly the same structure. The expansion connection assembly 2 includes an expansion sleeve 5, a pulling bolt 6 and a conical pulling head 7. One end of the expansion sleeve 5 is fixedly connected to the plate body 1, and a plurality of elastic expansion sheets 8 are formed at the other end of the expansion sleeve 5. The pulling bolt 6 runs through the expansion sleeve 5, and a conical pulling head 7 is fixedly provided at one end of the pulling bolt 6 close to the elastic expansion sheet 8.

A plurality of elastic expansion pieces 8 are arranged at equal intervals around the circumference of the end face of the expansion sleeve 5. When the conical pulling head 7 at the end of the pull bolt 6 squeezes each elastic expansion piece 8, each elastic expansion piece 8 tilts away from the axis of the expansion sleeve 5 to achieve a locking function. When the conical pulling head 7 at the end of the pull bolt 6 separates from the elastic expansion piece 8, each elastic expansion piece 8 automatically returns to its original position.

Furthermore, a threaded sleeve 9 is fixedly provided at both ends of the plate body 1 , the expansion sleeve 5 is plug-connected with the threaded sleeve 9 , and the two are interference fit, and the pull bolt 6 is threadedly connected with the threaded sleeve 9 .

The threaded sleeve 9 is provided to facilitate installation and removal of the expansion sleeve 5. Because the elastic expansion piece 8 is made of metal, its elasticity decreases after long-term use, and its ability to restore the original position decreases. In this case, you can choose to replace it with a new threaded sleeve 9. In addition, when the aperture size of the observation hole on the roller end cover is not suitable and the expansion sleeve 5 cannot be inserted, the expansion sleeve 5 of appropriate size can be replaced.

Further, one end of the push rod 4 is a cone-shaped structure. A rotating handle 10 is vertically installed at the other end of the push rod 4.

The working principle of the utility model: when in use, insert the conical pulling heads 7 and the expansion sleeves 5 on the two expansion connection components 2 into the two observation holes on the roller end cover, and then rotate the pulling bolt 6 to make the conical pulling head 7 approach the elastic expansion sheet 8 until it enters the elastic expansion sheet 8. Each elastic expansion sheet 8 is squeezed by the conical pulling head 7 and flipped outward, thereby expanding the overall outer diameter. At this time, the expansion sleeve 5 cannot be withdrawn from the observation hole. Then use the rotating handle 10 to rotate the push rod 4 so that the push rod 4 squeezes the rotating shaft of the roller. Since the rotating shaft is stationary, the plate body 1 pulls the roller end cover outward through the two expansion sleeves 5, and the roller end cover is gradually pulled out of the roller, which improves the disassembly efficiency and protects the roller and the rotating shaft from damage.

The above describes in detail the structure, features and effects of the utility model based on the embodiments shown in the drawings. The above is only a preferred embodiment of the utility model, but the utility model is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the utility model, or modified into equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and the drawings, should be within the protection scope of the utility model.

Claims (6)

1. A roller end cover disassembly device, comprising a plate body (1), characterized in that: an expansion connection assembly (2) is respectively provided at both ends of the plate body (1), a threaded hole (3) is opened at the center position of the plate body (1), and a push rod (4) is installed in the threaded hole (3). 2. The roller end cover disassembly device according to claim 1 is characterized in that: the expansion connection assembly (2) at both ends of the plate body (1) has exactly the same structure, and the expansion connection assembly (2) includes an expansion sleeve (5), a pulling bolt (6) and a conical pulling head (7), one end of the expansion sleeve (5) is fixedly connected to the plate body (1), and the other end of the expansion sleeve (5) is formed with a plurality of elastic expansion sheets (8), the pulling bolt (6) passes through the expansion sleeve (5), and the conical pulling head (7) is fixedly provided at one end of the pulling bolt (6) close to the elastic expansion sheet (8). 3. The roller end cover disassembly device according to claim 2 is characterized in that: a threaded sleeve (9) is fixedly provided at each end of the plate body (1), the expansion sleeve (5) is plug-connected with the threaded sleeve (9), the two are interference fit, and the pull bolt (6) is threadedly connected with the threaded sleeve (9). 4. The roller end cover disassembly device according to claim 3 is characterized in that one end of the push rod (4) is a cone-shaped structure. 5. The roller end cover disassembly device according to claim 4 is characterized in that a rotating handle (10) is vertically installed at the other end of the push rod (4). 6. The roller end cover disassembly device according to claim 5, characterized in that the plate body (1) is a rectangular parallelepiped structure.