Roller with bearings convenient to replace

Abstract

The utility model relates to the technical field of roller production, in particular to a roller with bearings convenient to replace, which comprises a rotating shaft, a pair of bearings, an inner roller and an outer roller, the two bearings are respectively arranged at two ends of the rotating shaft, the inner roller is arranged between the two bearings, the outer roller is sleeved on the inner roller, and the outer roller is arranged on the rotating shaft. Limiting mechanisms used for fixing the bearings are arranged at the two ends of the rotating shaft, each limiting mechanism comprises a plurality of limiting blocks, the limiting blocks are evenly embedded in the rotating shaft, clamping grooves are formed in the limiting blocks, the bearings are embedded in the clamping grooves, a rotating rod is horizontally and rotationally arranged in the rotating shaft, and threads opposite in rotating direction are formed in the two ends of the rotating rod; the two ends of the rotating rod are in threaded connection with the shaft sleeve, and the connecting rods are evenly distributed on the side wall of the shaft sleeve and around the axis of the shaft sleeve, so that the problems that when a bearing needs to be maintained and replaced, the bearing is usually arranged in a roller, the roller is of an integral design, integral replacement needs to be conducted, unnecessary waste is caused, and the use and maintenance cost is increased are solved; and the operation is tedious.

Description

Technical Field

[0001] The utility model relates to the technical field of roller production, in particular to a roller with easy bearing replacement. Background Art

[0002] Bearing is an important component in contemporary roller equipment. Its main function is to support the roller rotation, reduce the friction coefficient during its movement, and ensure its rotation accuracy. During use, the bearing will often wear out due to excessive force, seriously affecting the stability of the transmission process. In the prior art, when the bearing needs to be repaired and replaced, since the bearing is usually placed inside the roller and the roller is an integral design, it needs to be replaced as a whole, which causes unnecessary waste, increases the cost of use and maintenance, and is cumbersome to operate. In order to solve the above problems, we propose a roller that is easy to replace the bearing. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The invention solves the problem that when the bearing needs to be repaired and replaced, since the bearing is usually placed inside the roller and the roller is of integral design, it needs to be replaced as a whole, which causes unnecessary waste, increases the cost of use and maintenance, and is cumbersome to operate. A roller is provided for facilitating the replacement of bearings.

[0005] (II) Technical solution

[0006] A roller for easy replacement of bearings comprises a rotating shaft, a pair of bearings, an inner roller and an outer roller. The two bearings are respectively arranged at the two ends of the rotating shaft, the inner roller is arranged between the two bearings, the outer roller is sleeved on the inner roller, and limiting mechanisms for fixing the bearings are arranged at both ends of the rotating shaft.

[0007] As a preferred technical solution, the limit mechanism includes a plurality of limit blocks, which are evenly embedded on the rotating shaft, and the limit blocks are provided with slots, and the bearings are embedded in the slots. A rotating rod is arranged inside the rotating shaft for horizontal rotation, and threads with opposite rotation directions are formed at both ends of the rotating rod. The two ends of the rotating rod are threadedly connected to the sleeve, and a plurality of connecting rods are evenly arranged on the side wall of the sleeve and around the axis of the sleeve, one end of the connecting rod is hinged to the side wall of the sleeve, and the other end of the connecting rod is hinged to the lower surface of the limit block, and hexagonal screw holes are formed at both ends of the rotating rod.

[0008] As a preferred technical solution, an inner roller is sleeved on the rotating shaft and located between two bearings, and the two bearings fix the inner roller on the rotating shaft.

[0009] As a preferred technical solution, a raised retaining wall is formed on the inner side wall of one end of the outer roller, a thread is formed on the inner side wall of the other end of the outer roller, and the end of the outer roller with the thread is threadedly connected to a mounting cover.

[0010] As a preferred technical solution, the number of the limit blocks is at least 4, and the number of the connecting rods is consistent with the number of the limit blocks.

[0011] (III) Beneficial effects

[0012] The beneficial effects of the utility model are:

[0013] (1) When the roller needs to be replaced, the first step is to rotate and remove the installation cover, and then pull out the rotating shaft and the inner roller sleeved on the rotating shaft from the inside of the outer roller. At this time, the outer roller can be replaced. The second step is to insert a hexagonal screw into the hexagonal screw hole at the end of the rotating rod and rotate the rotating rod. The two ends of the rotating rod are formed with threads of opposite rotation directions. The two ends of the rotating rod are threadedly connected to the shaft sleeve. A number of connecting rods are evenly arranged on the side wall of the shaft sleeve and around the axis of the shaft sleeve. One end of the connecting rod is hinged to the side wall of the shaft sleeve, and the other end of the connecting rod is hinged to the lower surface of the limit block. The rotation of the rotating rod drives the two shaft sleeves away from each other. The two shaft sleeves move away from each other and drive the top end of the connecting rod to move downward. The downward movement of the top end of the connecting rod drives the limit block to move downward. The downward movement of the limit block can cause the bearing to be disengaged from the inside of the slot. At this time, the two bearings can be disengaged from the rotating shaft, and then the inner roller is pulled out of the rotating shaft. At this time, the inner roller can be replaced.

[0014] (2) The present application solves the problem that when the bearing needs to be repaired or replaced, since the bearing is usually placed inside the roller and the roller is of integral design, it needs to be replaced as a whole, which causes unnecessary waste, increases the cost of use and maintenance, and is cumbersome to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model without the outer roller;

[0018] Figure 3 It is a schematic diagram of the internal structure of the shaft rod of the utility model;

[0019] Figure 4 yes Figure 3 A partial enlarged view of part A;

[0020] 1-rotating shaft; 2-bearing; 3-inner roller; 4-outer roller; 5-limiting mechanism; 6-limiting block; 7-rotating rod; 8-shaft sleeve; 9-connecting rod; 10-hexagonal screw hole; 11-raised retaining wall; DETAILED DESCRIPTION

[0021] The utility model is further described with reference to the accompanying drawings, which is a roller that is convenient for replacing bearings.

[0022] Combined with Figure 1-4 As shown, a roller for easy bearing replacement includes a rotating shaft 1, a pair of bearings 2, an inner roller 3, and an outer roller 4. The two bearings 2 are respectively arranged at both ends of the rotating shaft 1, the inner roller 3 is arranged between the two bearings 2, and the outer roller 4 is sleeved on the inner roller 3. Limiting mechanisms 5 for fixing the bearings 2 are arranged at both ends of the rotating shaft 1.

[0023] Combined with Figure 3 , 4 As shown, the limiting mechanism 5 includes a plurality of limiting blocks 6, which are evenly embedded on the rotating shaft 1, and a slot is provided on the limiting block 6, and the bearing 2 is embedded inside the slot. A rotating rod 7 is arranged inside the rotating shaft 1 for horizontal rotation, and threads with opposite rotation directions are formed at both ends of the rotating rod 7. The two ends of the rotating rod 7 are threadedly connected to the sleeve 8, and a plurality of connecting rods 9 are evenly arranged on the side wall of the sleeve 8 and around the axis of the sleeve 8, one end of the connecting rod 9 is hinged to the side wall of the sleeve 8, and the other end of the connecting rod 9 is hinged to the lower surface of the limiting block 6, and hexagonal screw holes 10 are formed at both ends of the rotating rod 7.

[0024] Combined with Figure 2 As shown, an inner roller 3 is sleeved on the rotating shaft 1 and located between two bearings 2 , and the two bearings 2 fix the inner roller 3 on the rotating shaft 1 .

[0025] Combined with Figure 3 As shown, a protruding retaining wall 11 is formed on the inner side wall of one end of the outer roller 4, a thread is formed on the inner side wall of the other end of the outer roller 4, and the end of the outer roller 4 with the thread is threadedly connected to a mounting cover.

[0026] Furthermore, the number of the limit blocks 6 is at least 4, and the number of the connecting rods 9 is the same as the number of the limit blocks 6 .

[0027] Working principle: When the roller needs to be replaced, the first step is to rotate and remove the installation cover, and then pull out the rotating shaft 1 and the inner roller 3 sleeved on the rotating shaft 1 from the inside of the outer roller 4. At this time, the outer roller 4 can be replaced. The second step is to insert the hexagonal screw into the hexagonal screw hole 10 at the end of the rotating rod 7, and rotate the rotating rod 7. The two ends of the rotating rod 7 are formed with threads of opposite rotation directions. The two ends of the rotating rod 7 are threadedly connected to the sleeve 8. A number of connecting rods 9 are evenly arranged on the side wall of the sleeve 8 and around the axis of the sleeve 8. One end of the connecting rod 9 is hinged to the side wall of the sleeve 8, and the other end of the connecting rod 9 is hinged to the lower surface of the limit block 6. The rotation of the rotating rod 7 drives The two shaft sleeves 8 move away from each other, and the two shaft sleeves 8 move away from each other to drive the top end of the connecting rod 9 to move downward. The downward movement of the top end of the connecting rod 9 drives the limit block 6 to move downward. The downward movement of the limit block 6 can make the bearing 2 disengage from the inside of the slot. At this time, the two bearings 2 can be disengaged from the rotating shaft 1, and then the inner roller 3 can be pulled out from the rotating shaft 1. At this time, the inner roller 3 can be replaced. The above design solves the problem that when the bearing needs to be repaired and replaced, because the bearing is usually placed inside the roller and the roller is an integral design, it needs to be replaced as an integral whole, which causes unnecessary waste, increases the cost of use and maintenance, and is cumbersome to operate.

[0028] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary personnel in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A roller for facilitating the replacement of bearings, characterized in that: The invention comprises a rotating shaft (1), a pair of bearings (2), an inner roller (3), and an outer roller (4), wherein the two bearings (2) are respectively arranged at the two ends of the rotating shaft (1), the inner roller (3) is arranged between the two bearings (2), and the outer roller (4) is sleeved on the inner roller (3). The two ends of the rotating shaft (1) are provided with a limiting mechanism (5) for fixing the bearings (2), and the limiting mechanism (5) comprises a plurality of limiting blocks (6), and the limiting blocks (6) are evenly embedded on the rotating shaft (1), and a locking mechanism is provided on the limiting blocks (6). The bearing (2) is embedded in the slot, a rotating rod (7) is horizontally rotatably arranged inside the rotating shaft (1), two ends of the rotating rod (7) are formed with threads of opposite rotation directions, two ends of the rotating rod (7) are threadedly connected to a sleeve (8), a plurality of connecting rods (9) are evenly arranged on the side wall of the sleeve (8) and around the axis of the sleeve (8), one end of the connecting rod (9) is hinged to the side wall of the sleeve (8), and the other end of the connecting rod (9) is hinged to the lower surface of the limit block (6), and two ends of the rotating rod (7) are formed with hexagonal screw holes (10).

2. A roller for facilitating bearing replacement according to claim 1, characterized in that: An inner roller (3) is sleeved on the rotating shaft (1) and located between the two bearings (2), and the two bearings (2) fix the inner roller (3) on the rotating shaft (1).

3. A roller for facilitating bearing replacement according to claim 2, characterized in that: A raised retaining wall (11) is formed on the inner side wall of one end of the outer roller (4), and a thread is formed on the inner side wall of the other end of the outer roller (4). The end of the outer roller (4) with the thread is threadedly connected to a mounting cover.

4. A roller for easy bearing replacement according to claim 3, characterized in that: The number of the limit blocks (6) is at least 4, and the number of the connecting rods (9) is consistent with the number of the limit blocks (6).

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