Roller dismounting device for cylindrical roller bearing

Abstract

The utility model discloses a kind of roller dismounting devices of cylindrical roller bearing, including support, support includes cross bar, two vertical rods respectively connected in the both ends of cross bar, notched recess for bearing partial insertion is formed between cross bar and vertical rod, the end of two vertical rods is provided with the clamping mechanism of cooperation with the both ends of roller and compact fixation, notched recess is provided with the limiting block of cooperation with the outer ring of bearing and limit, limiting block and the middle part of cross bar are provided with the adjusting mechanism for adjusting the interval distance between the outer ring of bearing and limiting block. The roller dismounting device of cylindrical roller bearing of the utility model, can be conveniently and quickly dismounted to the roller in cage pocket under the premise of not damaging cage and roller.

Description

Technical Field

[0001] This utility model relates to a roller removal device for cylindrical roller bearings. Background Technology

[0002] Cylindrical roller bearings are commonly used rolling bearings that withstand large radial loads, possess high rigidity, and can operate at high speeds. Their structure consists of an inner ring, an outer ring, rolling elements (cylindrical rollers), and a cage. To ensure bearing stability during operation and the even spacing of the rollers, an integral cage structure is often used. In this type of structure, the cage typically has several roller pockets, each housing a cylindrical roller. The rollers are pressed into the pockets on the cage by pressure, achieving roller positioning and limiting.

[0003] The advantages of the aforementioned mounting structure are a compact connection between the cage and the rollers, smooth roller operation, and suitability for high-speed applications. However, in actual maintenance, inspection, or disposal processes, it is necessary to disassemble the rollers. Existing integrated cage structures, due to their press-fit pocket connection, make roller disassembly relatively difficult. In some structures, the rollers and cage bores use an interference fit or a light press fit, making them difficult to pull out by hand. Traditional disassembly methods often rely on hammering, prying, or directly damaging the cage structure, which is not only inefficient but also prone to irreversible damage such as bearing ring deformation and roller surface scratches.

[0004] Therefore, there is an urgent need for a roller removal device with an integrated cage that is structurally sound, easy to operate, and avoids damage to the bearing body, in order to meet the actual needs of non-destructive disassembly of rollers during maintenance and remanufacturing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a roller removal device for cylindrical roller bearings, which can conveniently and quickly remove the rollers from the cage pockets without damaging the cage and rollers.

[0006] To achieve the above objectives, this utility model provides a roller disassembly device for a cylindrical roller bearing, comprising a bracket, the bracket including a horizontal bar and two vertical bars respectively connected to both ends of the horizontal bar, a notch formed between the horizontal bar and the vertical bars for partial insertion of the bearing, clamping mechanisms provided at the ends of the two vertical bars for clamping and fixing with the ends of the roller, a limiting block provided at the notch for limiting the outer ring of the bearing, and an adjustment mechanism for adjusting the distance between the outer ring of the bearing and the limiting block provided between the limiting block and the middle of the horizontal bar.

[0007] When disassembling the rollers on the bearing, first disassemble the inner ring of the bearing to ensure there are no obstructions in the radial inward direction of the rollers. Stand the remaining part of the bearing upright and fix its lower end (using a clamp). Place its upper end upward in the notch of this utility model, so that the axial sides of the cage are in the direction corresponding to the two vertical rods. Clamp the two ends of the uppermost roller using the clamping mechanism. Adjust the distance between the limiting block and the outer ring of the bearing using the adjusting mechanism. Press down on the crossbar or hammer the crossbar to release the rollers from the pockets of the cage. During the release process, the cooperation between the limiting block and the upper part of the outer ring of the bearing can limit the falling stroke of the rollers, preventing them from colliding with the rollers below or the cage and causing damage. The structure is simple and the disassembly process is relatively convenient.

[0008] Furthermore, the two ends of the crossbar extend outward along the vertical bar to form gripping parts, which facilitates the staff to grasp and press down on the crossbar.

[0009] Furthermore, the clamping mechanism includes a base, an operating handle pivotally connected to the base, a cam disposed inside the base and connected to the operating handle, and a push rod movably passing through the base. The front end of the push rod abuts against the end of the roller, and the rear end of the push rod abuts against the cam. The rotation of the operating handle causes the cam to rotate, and the convex surface of the cam pushes against the rear end of the push rod, so that the front end of the push rod can press against the end of the roller.

[0010] Furthermore, a first spring is provided between the push rod and the base. The rear end of the push rod is held against the cam by the action of the first spring. When the operating handle is rotated in the opposite direction, the push rod retracts automatically by the action of the first spring, making the operation more convenient.

[0011] Furthermore, a first rubber pad is provided at the front end of the push rod. The first rubber pad can firstly increase the friction between the push rod and the roller, thereby improving the clamping effect. On the other hand, it can also prevent damage to the surface of the roller. In addition, since the first rubber pad has a certain elastic deformation capability, it can also reduce the requirements for precision error, allowing the push rod to apply sufficient pressure to the roller and preventing the cam from rotating on its own.

[0012] In other solutions, a common screw pressing mechanism can be used, in which the push rod is connected to the vertical rod by screwing, and the push rod is driven to rotate to press it against the end of the roller.

[0013] Furthermore, a screw hole is provided in the middle of the crossbar, and the adjustment mechanism includes a screw rod screwed through the through hole. A pin is connected to the rear end of the screw rod, and the limiting block is located at the front end of the screw rod. The pin rod can drive the screw rod to rotate. When the screw rod rotates, it will move back and forth, thereby driving the limiting block to move back and forth. The pin rod is preferably laterally movable at the rear end of the screw rod, and the lever arm length can be adjusted as needed, which is convenient to use.

[0014] Furthermore, the limiting block is slidably disposed at the front end of the screw and can slide along the front-back direction of the screw. A second spring is abutted between the limiting block and the crossbar and is sleeved on the screw. This structural design can play a buffering role when the limiting block collides with the outer ring of the bearing, thus avoiding damage to the outer ring of the bearing.

[0015] Furthermore, the rear end of the screw is also equipped with a hammering part, which is used to cooperate with the hammer to perform hammering.

[0016] Furthermore, a second rubber pad is provided at the front end of the limiting block, which can further reduce damage to the outer ring of the bearing.

[0017] The effect of adopting the above technical solution is that the roller disassembly device of the cylindrical roller bearing of this utility model has a simple structure and is easy to operate. It can conveniently and quickly disassemble the rollers in the cage pocket without damaging the cage and rollers, thereby improving the disassembly efficiency of the rollers. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the clamping mechanism according to an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the adjustment mechanism according to an embodiment of the present invention. Detailed Implementation

[0021] Figure 1 This is a usage diagram of an embodiment of the present utility model. Figure 1 The figure illustrates an embodiment of the roller removal device for the cylindrical roller bearing of this utility model, as well as a partial structure of the bearing to be removed. In the figure, the inner ring of the bearing has been removed beforehand, and the remaining part of the bearing includes an outer ring 21, a cage 22, and rollers 23. The rollers 23 are cylindrical rollers, and the cage 22 is an integral cage.

[0022] The roller removal device for the cylindrical roller bearing in this embodiment of the utility model is as follows: Figure 1-3As shown, the support includes a crossbar 11 and two vertical bars 12 connected to both ends of the crossbar 11. A recess is formed between the crossbar 11 and the vertical bars 12 for partial insertion of the bearing. The ends of the two vertical bars 12 are provided with clamping mechanisms that cooperate with the ends of the rollers 23 to press and fix them. A limiting block 31 is provided at the recess to limit the movement of the outer ring 21 of the bearing. An adjustment mechanism is provided between the limiting block 31 and the middle of the crossbar 11 for adjusting the distance between the outer ring 21 of the bearing and the limiting block 31.

[0023] Before disassembling the roller 23, the bearing must be kept upright and its lower end fixed (using a clamp). The upper end is placed upwards in the notch of this utility model, so that the axial sides of the retainer 22 are in the direction corresponding to the two vertical rods 12. The clamping mechanism clamps and positions the two ends of the uppermost roller. The distance between the limiting block 31 and the outer ring 21 of the bearing is adjusted by the adjusting mechanism. This distance depends on the distance between the roller 23 clamped on the bearing and the lower roller. In specific operation, this distance should be set to be less than the distance between the upper and lower rollers 23. Ideally, it should be just enough to allow the roller to completely come out of the pocket. Pressing down on the horizontal bar 11 or hammering the horizontal bar 11 can pull the roller retainer 22 downwards from the pocket. During the disassembly process, the cooperation between the limiting block 31 and the upper part of the outer ring 21 of the bearing can limit the falling stroke of the roller, preventing it from colliding with the lower roller 23 or the retainer 22 and causing damage. The structure is simple and the disassembly process is relatively convenient.

[0024] The two ends of the horizontal bar 11 extend outward along the vertical bar 12 to form gripping parts 111, which facilitates the staff to grasp and press down on the horizontal bar.

[0025] like Figure 2 As shown, the clamping mechanism includes a base 41, an operating handle 42 pivotally connected to the base 41, a cam 43 disposed inside the base 41 and connected to the operating handle 42, and a push rod 44 movably passing through the base 41. The front end of the push rod 44 abuts against the end of the roller 23, and the rear end of the push rod 44 abuts against the cam 43. The rotation of the operating handle 42 can cause the cam 43 to rotate, and the outer convex surface of the cam 43 pushes the rear end of the push rod 44, so that the front end of the push rod 44 can press against the end of the roller 23.

[0026] A first spring 45 is provided between the push rod 44 and the base 41. The rear end of the push rod 44 is held against the cam 43 by the action of the first spring 45. When the operating handle 42 is rotated in the opposite direction, the push rod 44 will automatically retract under the action of the first spring 45, making the operation more convenient.

[0027] The front end of the push rod 44 is provided with a first rubber pad 46. The first rubber pad 46 can firstly increase the friction between the push rod and the roller, thereby improving the clamping effect. On the other hand, it can also prevent damage to the surface of the roller 23. In addition, since the first rubber pad 46 has a certain elastic deformation capability, it can also reduce the requirements for precision error, allowing the push rod 44 to apply sufficient pressure to the roller 23, and also preventing the cam 43 from rotating on its own.

[0028] In other embodiments, a common screw 51 pressing mechanism can also be used, in which the push rod 44 is connected to the vertical rod 12 by screwing, and the push rod 44 is driven to rotate to press it against the end of the roller 23. The front end of the push rod 44 can also be plugged with the first rubber pad 46, and the rear end of the push rod 44 can also be connected to the pin 52 as an operating handle.

[0029] like Figure 3 As shown, a screw hole is provided in the middle of the crossbar 11. The adjustment mechanism includes a screw 51 screwed through the through hole. A pin 52 is connected to the rear end of the screw 51. The limiting block 31 is provided at the front end of the screw 51. The pin 52 can drive the screw 51 to rotate. When the screw 51 rotates, it will move back and forth, thereby driving the limiting block 31 to move back and forth. The pin 52 is preferably laterally movable at the rear end of the screw 51. The lever arm length can be adjusted as needed, making the rotation operation of the screw 51 more labor-saving and convenient to use.

[0030] The limiting block 31 is slidably disposed at the front end of the screw 51 and can slide along the front-back direction of the screw 51. The limiting structure between the limiting block 31 and the front end of the screw 51 prevents the limiting block 31 from coming off the front end of the screw 51. A second spring 53 is abutted between the limiting block 31 and the crossbar 11. The second spring 53 is sleeved on the screw 51. This structural design can play a buffering role when the limiting block 31 collides with the outer ring 21 of the bearing, avoiding damage to the outer ring 21 of the bearing.

[0031] The rear end of the screw 51 is also provided with a hammering part 54, which is used to cooperate with the hammer to perform hammering. In order to avoid damage when colliding with the hammer, a rubber pad is also provided on the upper end of the hammering part 54.

[0032] The front end of the limiting block 31 is provided with a second rubber pad 55, which can further reduce damage to the outer ring 21 of the bearing.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A roller dismounting device for cylindrical roller bearings, characterized in that: The bracket comprises a horizontal rod, two vertical rods connected to the two ends of the horizontal rod respectively, a notch between the horizontal rod and the vertical rods for partially accommodating a bearing, a clamping mechanism at the end of each vertical rod for clamping a roller, a limiting block at the notch for limiting the bearing, and an adjusting mechanism between the limiting block and the middle of the horizontal rod for adjusting the distance between the bearing and the limiting block.

2. A roller dismounting device for cylindrical roller bearings according to claim 1, characterized in that: The two ends of the horizontal rod extend outward along the vertical rods to form holding portions.

3. A roller dismounting device for cylindrical roller bearings according to claim 1, characterized in that: The clamping mechanism comprises a base, an operating handle pivotally connected to the base, a cam arranged on the inner side of the base and connected to the operating handle, and a top rod movably arranged on the base, the front end of the top rod abutting against the end of the roller, and the rear end of the top rod abutting against the cam.

4. A roller dismounting device for a cylindrical roller bearing according to claim 3, characterized in that: A first spring is arranged between the top rod and the base, and the rear end of the top rod abuts against the cam under the action of the first spring.

5. A roller dismounting device for a cylindrical roller bearing according to claim 3, characterized in that: The front end of the top rod is provided with a first rubber pad.

6. A roller dismounting device for cylindrical roller bearings according to claim 1, characterized in that: The middle of the horizontal rod is provided with a threaded hole, the adjusting mechanism comprises a screw rod arranged in the threaded hole, the rear end of the screw rod is connected with a pin rod, and the limiting block is arranged at the front end of the screw rod.

7. A roller dismounting device for a cylindrical roller bearing according to claim 6, characterized in that: The limiting block is slidably arranged at the front end of the screw rod and can slide along the front and rear directions of the screw rod, a second spring is arranged between the limiting block and the horizontal rod, and the second spring is sleeved on the screw rod.

8. A roller dismounting device for a cylindrical roller bearing according to claim 6, characterized in that: The rear end of the screw rod is further provided with a hammering portion.

9. A roller dismounting device for a cylindrical roller bearing according to claim 1, characterized in that: The front end of the limiting block is provided with a second rubber pad.

Images