Bearing clearance correction device

Abstract

The utility model relates to the technical field of bearings, in particular to a bearing clearance correction device, which comprises a fixing frame, a bottom plate fixed at the bottom of the fixing frame, two bearings arranged in the middle of the fixing frame, a gasket arranged between the two bearings, a support mechanism and a detection mechanism, the detection mechanism is located in the center of the supporting mechanism. A bottom plate is fixed to the bottom of the fixing frame, two bearings are arranged in the middle of the fixing frame, a gasket is arranged between the two bearings, the supporting mechanism is located at the positions of the two bearings, and the detection mechanism is located at the center of the supporting mechanism.

Description

A bearing clearance calibration device Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a bearing clearance calibration device. Background Technology

[0002] Generally, angular contact ball bearings are installed face-to-face or back-to-back. The bearing's tilt angle normal direction and the shaft's axis direction will intersect at a point called the focal point. The shaft's anti-tilting ability is improved by adjusting the focal distance between the two bearings.

[0003] According to the patent document with publication number CN219726142U, the two bearings are placed on a pad, and then the outer rings of the two bearings are pressed together by the clamping nut on the screw. Then, the inner rings of the two bearings are supported by the first nut and the second nut on the outside of the connecting shaft. The connecting shaft is pushed up to allow the dial indicator to detect the axial movement of the bearings. At the same time, shims are added between the two bearings to reduce the axial movement of the bearings, and then the clearance between the two bearings is adjusted.

[0004] The patent document describes a process for calibrating two bearings. When adding shims between the two bearings, the dial indicator, pressure plate, first nut, and upper bearing must be removed before the shims can be added. After adding the shims, the positions of the dial indicator and pressure plate must be readjusted before calibration can be performed again. The whole process is quite cumbersome and inconvenient. Summary of the Invention

[0005] The purpose of this invention is to provide a bearing clearance calibration device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A bearing clearance calibration device includes a fixed frame, a base plate fixed to the bottom of the fixed frame, two bearings arranged in the middle of the fixed frame, a shim between the two bearings, a support mechanism and a detection mechanism, the support mechanism being located at the two bearings, and the detection mechanism being located at the center of the support mechanism.

[0008] The support mechanism includes a positioning seat, a movable seat on one side of the positioning seat, and a three-jaw chuck rotatably connected to the sides of the movable seat and the positioning seat that are close to each other. Two movable hydraulic cylinders are fixedly installed on one side of the movable seat, and a positioning hydraulic cylinder is fixedly installed on the other side of the positioning seat.

[0009] The testing mechanism includes a testing shaft, a compression conical seat that is slidably connected to the position where the testing shaft extends into the moving seat, and a support conical seat that is fixed to the position where the testing shaft extends into the positioning seat. Two pushers are fixed to the ends of the support conical seat and the compression conical seat that are far apart from each other. A compression spring is fixedly installed at the end of the pusher that extends out of the moving seat and the positioning seat, and the compression springs of the moving seat and the positioning seat are fixedly connected to both. A dial indicator is installed at the end of the testing shaft that extends out of the positioning seat, and the dial indicator is fixed to the other end of the fixed frame.

[0010] Preferably, two bearings are respectively clamped at the center of the three-jaw chuck of the moving seat and the positioning seat, and two limiting mechanisms for supporting multiple gaskets are provided between the two three-jaw chucks.

[0011] Preferably, the limiting mechanism includes a limiting frame, with two limiting rods fixed at the end of the limiting frame away from the bearing, each of the two limiting rods having a limiting sleeve at the end away from the bearing, and a limiting spring between the two limiting rods.

[0012] Preferably, the limiting rod is slidably connected to the limiting frame, the limiting frame is fixedly connected to the base plate, and the limiting spring is fixedly connected to the base plate.

[0013] Preferably, the inner side of the fixed frame is provided with two horizontal sliding grooves, and both the front and rear ends of the movable seat and the positioning seat are fixed with sliders for sliding in the sliding grooves.

[0014] Preferably, the inner rings of the two bearings are respectively fitted onto the outer side of the tapered surface of the supporting tapered seat and the extruding tapered seat.

[0015] Preferably, the fixed part of the movable hydraulic cylinder is fixedly connected to one end of the fixed frame, and the fixed part of the positioning hydraulic cylinder is fixedly connected to the other end of the fixed frame.

[0016] The advantages compared to existing technologies are as follows:

[0017] The outer rings of the two bearings are clamped and fixed by two three-jaw chucks on the moving seat and the positioning seat. At the same time, the inner rings of the two bearings clamped on the moving seat and the positioning seat are pressed tightly by the compression spring and the pusher. Then, the dial indicator displays the axial movement value by pushing the detection shaft. The axial movement value is adjusted to the appropriate position by adding or removing shims between the two bearings. Shims can be added or removed quickly without disassembling the bearings, reducing the tedious steps in the calibration process. 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 these drawings without creative effort.

[0019] Figure 1 is a perspective view of a bearing clearance calibration device according to this utility model;

[0020] Figure 2 is a side view of a bearing clearance calibration device according to the present invention;

[0021] Figure 3 is a cross-sectional view at point DD in Figure 2;

[0022] Figure 4 is a schematic diagram of the support mechanism structure of a bearing clearance calibration device according to this utility model.

[0023] Figure 5 is a schematic diagram of the limiting mechanism of a bearing clearance calibration device according to this utility model.

[0024] Figure 6 is a schematic diagram of the pusher frame structure of a bearing clearance calibration device according to this utility model;

[0025] Figure 7 is a schematic diagram of the extrusion tapered seat and bearing structure of a bearing clearance calibration device according to this utility model.

[0026] Figure 8 is a schematic diagram of the support conical seat structure of a bearing clearance calibration device according to this utility model.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Support mechanism; 2. Detection mechanism; 3. Limiting mechanism; 4. Bearing; 5. Shim; 6. Base plate; 7. Fixing frame; 11. Moving seat; 12. Moving hydraulic cylinder; 13. Three-jaw chuck; 14. Positioning seat; 15. Positioning hydraulic cylinder; 21. Detection shaft; 22. Support conical seat; 23. Extrusion conical seat; 24. Pushing frame; 25. Dial indicator; 31. Limiting sleeve; 32. Limiting rod; 33. Limiting spring; 34. Limiting frame. Detailed Implementation

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] As shown in Figures 1-8, a bearing clearance calibration device includes a fixed frame 7, a base plate 6 fixed to the bottom of the fixed frame 7, two bearings 4 arranged in the middle of the fixed frame 7, a shim 5 arranged between the two bearings 4, and a support mechanism 1 and a detection mechanism 2. The support mechanism 1 is located at the position of the two bearings 4, and the detection mechanism 2 is located at the center of the support mechanism 1.

[0032] In this embodiment: the support mechanism 1 includes a positioning seat 14, a movable seat 11 is provided on one side of the positioning seat 14, and a three-jaw chuck 13 is rotatably connected to the side of the movable seat 11 and the positioning seat 14 that are close to each other. Two movable hydraulic cylinders 12 are fixedly provided on one side of the movable seat 11, and a positioning hydraulic cylinder 15 is fixedly provided on the other side of the positioning seat 14. Two bearings 4 are respectively clamped at the center of the three-jaw chuck 13 of the movable seat 11 and the positioning seat 14. Two limiting mechanisms 3 for supporting multiple pads 5 are provided between the two three-jaw chucks 13. Two horizontal sliding grooves are opened on the inner side of the fixed frame 7, and sliders for sliding in the sliding grooves are fixed at both the front and rear ends of the movable seat 11 and the positioning seat 14. The fixed part of the movable hydraulic cylinder 12 is fixedly connected to one end of the fixed frame 7. The fixed part of the positioning hydraulic cylinder 15 is fixedly connected to the other end of the fixed frame 7. The telescopic parts of the two positioning hydraulic cylinders 15 push the positioning seat 14 to one side, so that the detection mechanism 2 passes through the center position of the moving seat 11 and the positioning seat 14. Then the positioning hydraulic cylinder 15 drives the positioning seat 14 to move, thereby moving to the calibration position. Then the two bearings 4 are respectively mounted on the side of the two three-jaw chucks 13 that are close to each other. At the same time, the two three-jaw chucks 13 clamp and fix the two bearings 4. Then a shim 5 is placed between the two bearings 4. Then the telescopic parts of the two moving hydraulic cylinders 12 push the moving seat 11 to move towards the positioning seat 14, and the three-jaw chuck 13 on the moving seat 11 drives the bearing 4 to press the shim 5 against the end of the other bearing 4.

[0033] In this embodiment: the detection mechanism 2 includes a detection shaft 21, a compression conical seat 23 slidably connected to the position where the detection shaft 21 extends into the movable seat 11, and a support conical seat 22 fixed to the position where the detection shaft 21 extends into the positioning seat 14. Two pushers 24 are fixed to the ends of both the support conical seat 22 and the compression conical seat 23 that are far apart from each other. Compression springs are fixedly provided at the ends of the pushers 24 that extend out of the movable seat 11 and the positioning seat 14, and the compression springs of both the movable seat 11 and the positioning seat 14 are fixedly connected to both. A dial indicator 25 is provided at one end of the detection shaft 21 extending from the positioning seat 14. The dial indicator 25 is fixed to the other end of the fixing frame 7. The inner rings of the two bearings 4 are respectively fitted onto the outer sides of the conical surfaces of the supporting conical seat 22 and the pressing conical seat 23. When the bearings 4 are installed at the position of the moving seat 11, the bearings 4 are pressed so that their inner rings abut against the conical surface of the pressing conical seat 23. During this process, the compression spring at the end of the pusher 24 is stretched, thereby making the pressing conical seat 23 completely tightened on the inner rings of the bearings 4. Then, the moving seat... The three-jaw chuck 13 on the movable seat 11 clamps the outer ring of the bearing 4, thus completing the installation of the bearing 4 on the movable seat 11. Simultaneously, the above steps are repeated to install the bearing 4 at the positioning seat 14 onto the three-jaw chuck 13 of the positioning seat 14. One end of the detection shaft 21 passes sequentially through the center of the bearing 4 and the washer 5 at the positioning seat 14. At this time, the supporting tapered seat 22 abuts against the inner ring of the bearing 4 at the positioning seat 14. As the two three-jaw chucks 13 gradually approach each other, the movable seat 11 and the positioning seat 14 will drive the two... The bearing 4 completely presses the shim 5 tightly. Then, by pushing one end of the detection shaft 21, the change of the dial indicator 25 against the other end of the detection shaft 21 is observed to obtain the axial displacement value. When the axial displacement value does not reach the appropriate value, the moving hydraulic cylinder 12 telescopic part drives the moving seat 11 to move away from the positioning seat 14. At the same time, the moving seat 11 drives the three-jaw chuck 13 on its side and the bearing 4 to move synchronously. Then, one or two shims 5 can be added. Then, the above steps are repeated to obtain the appropriate axial displacement value.

[0034] In this embodiment: the limiting mechanism 3 includes a limiting frame 34. Two limiting rods 32 are fixed at the end of the limiting frame 34 away from the bearing 4. Each of the two limiting rods 32 is provided with a limiting sleeve 31 at the end away from the bearing 4. A limiting spring 33 is provided between the two limiting rods 32. The limiting rods 32 are slidably connected to the limiting frame 34. The limiting frame 34 is fixedly connected to the base plate 6. The limiting spring 33 is fixedly connected to the base plate 6. The limiting frame 34 is pushed outward from the bearing 4 by the elastic force of the limiting spring 33. At this time, the limiting rods 32 will extend out from the inside of the limiting sleeve 31, thereby preventing them from falling off when the gasket 5 is added.

[0035] Working principle: In use, the two positioning hydraulic cylinders 15 first push the positioning seat 14 to one side using their telescopic parts, so that the detection mechanism 2 passes through the center of the moving seat 11 and the positioning seat 14. Then, the positioning hydraulic cylinders 15 drive the positioning seat 14 to move. When installing the bearing 4 at the position of the moving seat 11, the bearing 4 is pressed so that its inner ring abuts against the conical surface of the extrusion conical seat 23. During this process, the extrusion spring at the end of the pusher 24 is stretched, so that the extrusion conical seat 23 is completely supported on the inner ring of the bearing 4. Then, the three-jaw chuck 13 on the moving seat 11 clamps the bearing 4 at the outer ring, thus completing the installation of the bearing 4 on the moving seat 11. At the same time, the above steps are repeated to install the bearing 4 at the position of the positioning seat 14 onto the three-jaw chuck 13 of the positioning seat 14. One end of the detection shaft 21 will pass through the bearing 4 of the positioning seat 14 and the bearing 4 at the position of the positioning seat 14 in sequence. At the center of the shim 5, the supporting tapered seat 22 is pressed against the inner ring of the bearing 4 at the position of the positioning seat 14. As the two three-jaw chucks 13 gradually approach each other, the moving seat 11 and the positioning seat 14 will drive the two bearings 4 to completely press the shim 5. Then, by pushing one end of the detection shaft 21, the change of the dial indicator 25 pressed against the other end of the detection shaft 21 is observed to obtain the axial displacement value. When the axial displacement value does not reach the appropriate value, the moving hydraulic cylinder 12 is used to move the moving seat 11 away from the positioning seat 14. At the same time, the moving seat 11 drives the three-jaw chuck 13 and the bearing 4 on its side to move synchronously. Then, one or two shims 5 can be added. Then, the above steps are repeated until the appropriate axial displacement value is obtained. Then, the two bearings 4 and the shim 5 between them can be installed on the equipment at the same time, and the bearing clearance calibration operation is completed.

[0036] In addition, when adding the shim 5, the limiting spring 33 pushes the limiting frame 34 to move outward of the bearing 4. At this time, the limiting rod 32 will extend out from the inside of the limiting sleeve 31, thereby preventing the shim 5 from falling off when it is added.

[0037] 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 can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A bearing clearance calibration device, comprising a fixing frame (7), a base plate (6) fixed to the bottom of the fixing frame (7), two bearings (4) disposed in the middle of the fixing frame (7), and a shim (5) disposed between the two bearings (4), characterized in that: It also includes a support mechanism (1) and a detection mechanism (2). The support mechanism (1) is located at the positions of two bearings (4), and the detection mechanism (2) is located at the center of the support mechanism (1). The support mechanism (1) includes a positioning seat (14). A movable seat (11) is provided on one side of the positioning seat (14). A three-jaw chuck (13) is rotatably connected to the side of the movable seat (11) and the positioning seat (14) that are close to each other. Two movable hydraulic cylinders (12) are fixedly provided on one side of the movable seat (11), and a positioning hydraulic cylinder (15) is fixedly provided on the other side of the positioning seat (14). The detection mechanism (2) includes a detection shaft (21). The detection shaft (21) extends into the... A compression cone seat (23) is slidably connected inside the movable seat (11). A support cone seat (22) is fixed at the position where the detection shaft (21) extends into the positioning seat (14). Two pushers (24) are fixed at the ends of the support cone seat (22) and the compression cone seat (23) that are far apart from each other. A compression spring is fixed at the end of the pusher (24) that extends out of the movable seat (11) and the positioning seat (14). The compression springs of the movable seat (11) and the positioning seat (14) are fixedly connected to both. A dial indicator (25) is provided at the end of the detection shaft (21) that extends out of the positioning seat (14). The dial indicator (25) is fixed at the other end of the fixed frame (7).

2. The bearing clearance calibration device according to claim 1, characterized in that: The two bearings (4) are respectively clamped at the center of the three-jaw chuck (13) of the moving seat (11) and the positioning seat (14), and two limiting mechanisms (3) for supporting multiple gaskets (5) are provided between the two three-jaw chucks (13).

3. The bearing clearance calibration device according to claim 2, characterized in that: The limiting mechanism (3) includes a limiting frame (34), and two limiting rods (32) are fixed at one end of the limiting frame (34) away from the bearing (4). Each of the two limiting rods (32) is provided with a limiting sleeve (31) at one end away from the bearing (4), and a limiting spring (33) is provided between the two limiting rods (32).

4. The bearing clearance calibration device according to claim 3, characterized in that: The limiting rod (32) is slidably connected to the limiting frame (34), the limiting frame (34) is fixedly connected to the base plate (6), and the limiting spring (33) is fixedly connected to the base plate (6).

5. The bearing clearance calibration device according to claim 1, characterized in that: The inner side of the fixed frame (7) is provided with two horizontal sliding grooves, and the front and rear ends of the movable seat (11) and the positioning seat (14) are fixed with sliders for sliding in the sliding grooves.

6. The bearing clearance calibration device according to claim 1, characterized in that: The inner rings of the two bearings are respectively fitted on the outer side of the conical surface of the support conical seat (22) and the extrusion conical seat (23).

7. The bearing clearance calibration device according to claim 1, characterized in that: The fixed part of the movable hydraulic cylinder (12) is fixedly connected to one end of the fixed frame (7), and the fixed part of the positioning hydraulic cylinder (15) is fixedly connected to the other end of the fixed frame (7).

Images