A bearing strength testing apparatus

Abstract

The utility model relates to bearing test technical field, concretely relates to a bearing strength test equipment, include: machine table, bearing to be measured, fixed mechanism that fixes the bearing to be measured, the fixed mechanism includes: fixed jar, the piston rod of fixed jar is fixedly connected with the lifting column, the sleeve is rotatably installed on the lifting column, the sleeve is hinged with first deflection lever, first deflection lever is hinged with locating block, the lifting column is hinged with second deflection lever, second deflection lever is hinged with clamping block, in the utility model, through the descent of lifting column, lifting column drives the sleeve to descend, makes the sleeve drive first deflection lever to rotate, first deflection lever pulls locating block, makes locating block clamping bearing to be measured, and lifting column drives second deflection lever to rotate, second deflection lever pulls clamping block, and clamping block contacts the inner wall of bearing to be measured, clamps and fixes bearing to be measured, need not use multiple power source, reduce the cost of device.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, and specifically to a bearing strength testing device. Background Technology

[0002] Bearings are core basic components in mechanical engineering. Their core function is to support rotating shafts or moving parts, reduce kinetic friction, and bear loads (radial and / or axial). Therefore, it is essential to conduct strength tests on them, that is, to test the bearing's radial stress capacity under a set high-intensity pressure, and whether cracks or even fractures will occur.

[0003] Existing technologies, such as the utility model patent with publication number CN221445662U, describe an engine bearing strength testing device, including a support platform, a clamping assembly, a pressure application assembly, and a pressure testing instrument. The key technical features are: a column is positioned at the center of the bottom surface of the support platform, with a transmission gear for connection to a drive mechanism on the column; two elongated through holes are symmetrically arranged on the upper surface of the support platform, with sliding columns inserted into these holes; an expanding diameter push block is fixed to the upper end of the sliding column, and an axial limiting block is provided on the upper surface of the expanding diameter push block; a connecting lug is fixed to the lower end of the sliding column; a push-pull cylinder corresponding to each connecting lug is provided on the lower surface of the support platform; a concentric annular platform is provided on the outer side of the support platform; the clamping assembly includes three clamping cylinders fixed to the front, rear, and right sides of the upper surface of the concentric annular platform; and the pressure application assembly includes a pressure application cylinder fixed to the left side of the upper surface of the concentric annular platform. This device solves the problem that pressure testing can only be applied to a specific point or side of the bearing outer ring in a single clamping operation, saving clamping time and improving testing efficiency.

[0004] This technical solution uses multiple power sources during the fixing and rotation of the bearing, which increases the cost of the device.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a bearing strength testing device that can effectively solve the above-mentioned technical problems.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted: a bearing strength testing device, comprising: a machine base, a bearing to be tested, and a fixing mechanism for fixing the bearing to be tested;

[0008] The fixing mechanism includes: a fixing cylinder, the piston rod of the fixing cylinder being fixedly connected to the lifting column, a sleeve being rotatably mounted on the lifting column, a first deflection rod being hinged to the sleeve, and a positioning block being hinged to the first deflection rod; a second deflection rod being hinged to the lifting column, and a clamping block being hinged to the second deflection rod.

[0009] Furthermore, the positioning block is slidably installed in the first limiting groove, which is set on the test platform.

[0010] Furthermore, the clamping block is slidably installed in the second limiting groove, which is disposed on the rotating platform, and the rotating platform is rotatably installed on the test platform.

[0011] Furthermore, the first deflection rod is located below the rotating platform, and the second deflection rod is located above the rotating platform.

[0012] Furthermore, a limit block is fixedly installed on the lifting column, and a driven gear is slidably installed on the limit block. The driven gear meshes with the driving gear, and the driving gear is fixedly installed on the output shaft of the motor.

[0013] Furthermore, a limiting plate is fixedly installed on the top of the clamping block.

[0014] Compared with the prior art, the present invention has the following advantages: The bearing strength testing device of the present invention uses the descent of the lifting column to drive the sleeve to descend, which in turn drives the first deflection rod to rotate. The first deflection rod pulls the positioning block, which clamps the bearing to be tested. Meanwhile, the lifting column drives the second deflection rod to rotate, which pulls the clamping block. The clamping block contacts the inner wall of the bearing to be tested, thus clamping and fixing the bearing. This eliminates the need for multiple power sources and reduces the cost of the device. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the structure of a bearing strength testing device according to the present invention.

[0017] Figure 2 This is a structural schematic diagram of one side of the fixing mechanism in this utility model.

[0018] Figure 3 This is a schematic diagram of the other side of the fixing mechanism in this utility model.

[0019] In the diagram: 1. Machine base; 2. Support column; 3. Test platform; 4. Fixing mechanism; 41. Fixing cylinder; 42. Lifting column; 43. Sleeve; 44. First deflection rod; 45. Positioning block; 46. First limiting groove; 47. Rotating table; 48. Clamping block; 49. Second deflection rod; 410. Second limiting groove; 411. Motor; 412. Driving gear; 413. Driven gear; 414. Limiting block; 5. Test cylinder; 6. Pressure block; 7. Bearing to be tested. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0022] like Figures 1 to 3 As shown, this utility model discloses a bearing strength testing device, comprising: a machine base 1, a bearing 7 to be tested, and a fixing mechanism 4 for fixing the bearing 7 to be tested; multiple support columns 2 are installed on the circumference of the top edge of the machine base 1, and a test platform 3 is fixedly installed on the top of the multiple support columns 2. The bearing 7 to be tested is fixed on the test platform 3 by the fixing mechanism 4, and a test cylinder 5 is fixedly installed at one end of the test platform 3. A pressure block 6 is fixedly connected to the piston rod of the test cylinder 5. The test cylinder 5 is electrically connected to a pressure tester. The pressure applied to the bearing 7 by the pressure block 6 is detected by the pressure tester. When the applied pressure reaches the standard value, the piston rod of the test cylinder 5 retracts.

[0023] The fixing mechanism 4 includes: a fixing cylinder 41, which is fixedly installed at the bottom of the machine base 1. The piston rod of the fixing cylinder 41 is fixedly connected to the lifting column 42, and the piston rod of the fixing cylinder 41 is embedded in the lifting column 42, while the lifting column 42 slides and passes through the machine base 1; a sleeve 43 is rotatably installed on the lifting column 42, which is driven to move vertically by the piston rod of the fixing cylinder 41, and the lifting column 42 drives the sleeve 43 to move vertically; a first deflection rod 44 is hinged to the sleeve 43, and a positioning block 45 is hinged to the first deflection rod 44. The positioning block 45 is slidably installed in a first limiting groove 46, which is circumferentially arranged on the test platform 3, and three such grooves are provided. A deflection rod is provided, with its upper and lower ends at the same height. Three positioning blocks 45 and one pressure block 6 are circumferentially distributed on the test platform 3. The positioning blocks 45 are used to position the bearing on the outside of the bearing. A second deflection rod 49 is hinged to the lifting column 42. The second deflection rod 49 is hinged to a clamping block 48. The clamping block 48 is slidably installed in the second limiting groove 410. The second limiting groove 410 is circumferentially set on the rotating table 47. The rotating table 47 is rotatably installed on the test platform 3 and fixedly installed on the lifting column 42. Multiple second deflection rods 49 are provided. The second deflection rods 49 drive the clamping blocks 48 to move, and the clamping blocks 48 clamp and fix the bearing 7 to be tested.

[0024] It should be added that the contact surface between the positioning block 45 and the bearing is a smooth surface, while the contact surface between the clamping block 48 and the bearing is a rough surface, so that the clamping block 48 can drive the bearing to rotate.

[0025] Furthermore, the first deflection rod 44 is located below the rotating platform 47, and the second deflection rod 49 is located above the rotating platform 47. When the piston rod of the fixed cylinder 41 drives the lifting column 42 to descend, the lifting column 42 drives the sleeve 43 to descend, causing the sleeve 43 to drive the first deflection rod 44 to rotate. The first deflection rod 44 pulls the positioning block 45, causing the positioning block 45 to clamp the bearing 7 to be tested. Meanwhile, the lifting column 42 drives the second deflection rod 49 to rotate, and the second deflection rod 49 pulls the clamping block 48. The clamping block 48 contacts the inner wall of the bearing 7 to be tested, clamping and fixing the bearing 7 to be tested. This allows for positioning of the outer side of the bearing and clamping and fixing of the inner side of the bearing.

[0026] A limit block 414 is fixedly installed on the lifting column 42. A driven gear 413 is slidably installed on the limit block 414. The driven gear 413 meshes with the driving gear 412. The driving gear 412 is fixedly installed on the output shaft of the motor 411. The motor 411 is fixedly installed at the bottom of the machine base 1. The output shaft of the motor 411 rotates and passes through the machine base 1. The output shaft of the motor 411 drives the driving gear 412 to rotate. The driving gear 412 drives the lifting column 42 to rotate through the limit block 414. The lifting column 42 drives the rotating table 47 to rotate. The rotating table 47 and the clamping block 48 drive the bearing 7 under test to rotate, which can adjust the position of the bearing 7 under test detected by the pressure block 6.

[0027] It should be noted that a limiting plate is fixedly installed on the top of the clamping block 48, and the bottom of the limiting plate slides in contact with the top of the bearing 7 to be tested. The bearing 7 to be tested is fixed in the vertical direction by the limiting plate and the rotating table 47 to prevent the bearing 7 to be tested from moving in the vertical direction, which would affect the test results.

[0028] Working principle:

[0029] The fixing mechanism 4 can position and fix the inner and outer sides of the bearing, and only one power source is used, which reduces the number of bearings used in the fixing process of the bearing under test 7, reduces the cost of the device, and the device can also rotate the bearing, which makes it easy to test the bearing from multiple positions on the bearing and improves the practicality of the device.

[0030] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A bearing strength testing device, characterized in that, include: The machine tool, the bearing to be tested, and the fixing mechanism for fixing the bearing to be tested; The fixing mechanism includes: a fixing cylinder, the piston rod of the fixing cylinder being fixedly connected to the lifting column, a sleeve being rotatably mounted on the lifting column, a first deflection rod being hinged to the sleeve, and a positioning block being hinged to the first deflection rod; a second deflection rod being hinged to the lifting column, and a clamping block being hinged to the second deflection rod.

2. The bearing strength testing equipment as described in claim 1, characterized in that, The positioning block is slidably installed in the first limiting groove, which is set on the test platform.

3. The bearing strength testing equipment as described in claim 2, characterized in that, The clamping block is slidably installed in the second limiting groove, which is located on the rotating platform, and the rotating platform is rotatably installed on the test platform.

4. The bearing strength testing equipment as described in claim 3, characterized in that, The first deflection rod is located below the rotating platform, and the second deflection rod is located above the rotating platform.

5. The bearing strength testing equipment as described in claim 1, characterized in that, A limit block is fixedly installed on the lifting column, and a driven gear is slidably installed on the limit block. The driven gear meshes with the driving gear, and the driving gear is fixedly installed on the output shaft of the motor.

6. The bearing strength testing equipment as described in claim 1, characterized in that, A limiting plate is fixedly installed on the top of the clamping block.

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