Service life test device for bearing retainer

Abstract

The utility model provides a service life test device for a bearing retainer. The service life test device comprises a workbench; the movable part is movably mounted on the surface of the workbench, and the bearing retainer and the roller can be placed above the movable part; the loading plate is arranged at the position above the movable part and is arranged to apply pressure to the roller above the movable part when the movable part moves; the contact piece is mounted below the loading plate and is in contact with the roller during working; according to the utility model, the design structure is reasonable, on one hand, the actual rotation radius of the retainer during working can be simulated, the actual working condition is met in size, on the other hand, the roller can be pressed through the loading plate, so that the roller moves in a pressed state, and the actual stress state of the retainer can be simulated; after the retainer is damaged or broken, the actual service life of the retainer can be calculated, and the method has the advantages of being easy to operate and high in precision.

Description

Technical Field

[0001] This utility model belongs to the field of bearing retainer testing technology, specifically relating to a device for testing the service life of bearing retainers. Background Technology

[0002] A bearing cage (also called a bearing retainer) is a bearing component that partially encloses all or part of the rolling elements and moves with them. It isolates the rolling elements and usually guides and holds them within the bearing. The reliability and performance of bearings are crucial to all rotating machinery. Therefore, monitoring and maintaining the condition of bearings, especially the condition of the bearing cage, is essential for preventing failures, extending equipment life, and reducing maintenance costs.

[0003] However, in the existing technology, the test of bearing cage service life is difficult and has low accuracy. The main reason is that the actual operating conditions of the cage cannot be simulated during the test. Therefore, there is an urgent need for a life test device for bearing cage that can simulate its specific operating conditions to solve the above problems. Utility Model Content

[0004] This invention provides a device for testing the service life of bearing retainers, which solves the problem mentioned in the background art that existing testing devices cannot simulate the actual working conditions of the retainer, resulting in high testing difficulty and low accuracy.

[0005] The technical solution adopted in this utility model is: a device for testing the service life of bearing retainers, comprising:

[0006] Workbench;

[0007] The movable part is movably mounted on the worktable surface, and the bearing retainer and rollers can be placed on top of the movable part;

[0008] A loading plate is positioned above the moving part and is configured to apply pressure to the rollers above the moving part as the moving part moves.

[0009] The contact element is mounted below the loading plate and comes into contact with the roller during operation;

[0010] A horizontal drive unit, mounted on the worktable, is configured to drive the movable part to move on the worktable surface;

[0011] The guide assembly, which is set on the worktable, is configured to cause the movable part to move in an arc along a specified radius when the horizontal drive component moves the movable part.

[0012] The movable part comprises a bottom plate, a first top plate and a second top plate are respectively arranged on the upper surface of the bottom plate, a groove with an arc structure is formed between the first top plate and the second top plate, and the bearing retainer and the roller are arranged in the groove.

[0013] The guiding assembly comprises a fixed column, a rotating shaft is arranged on the upper portion of the column, a connecting rod is arranged on the rotating shaft in the radial direction, the connecting rod is connected with the first top plate, a plurality of positioning holes are arranged on the connecting rod, a positioning rod is arranged on the upper end of the rotating shaft, and the positioning rod can be inserted into the positioning hole, so that the adjustment of the rotating radius of the connecting rod is realized.

[0014] The guiding assembly comprises at least two first guiding wheels and at least one second guiding wheel arranged on the surface of the workbench, the first guiding wheel is arranged on one side of the movable part, and the second guiding wheel is arranged on the other side of the movable part.

[0015] The horizontal driving part comprises a support arranged on the side surface of the workbench, a driving oil cylinder is hinged to the upper surface of the support, and the telescopic rod of the driving oil cylinder is hinged to the end portion of the movable part.

[0016] The support is arranged on the workbench and located below the movable part, and is used for supporting the movable part and reducing the friction of the movable part during movement.

[0017] The movable part has an arc structure, and the inner wall of the movable part is provided with teeth;

[0018] The guiding assembly comprises at least two first guiding wheels arranged on the surface of the workbench.

[0019] The horizontal driving part is a rotating gear arranged on the surface of the workbench, the gear is engaged with the teeth, and the gear and the at least two first guiding wheels jointly realize the guiding effect during the movement of the movable part.

[0020] The contact part is a flat plate.

[0021] The cross section of the contact part has an L-shaped structure, and the contact part and the movable part form a rolling groove for the movement of the bearing retainer and the roller.

[0022] The pressurizing driving part is arranged at the four corners of the workbench and connected with the loading plate, and is used for providing a vertical force to the loading plate.

[0023] The utility model discloses the beneficial effects are:

[0024] The utility model discloses a design reasonable structure, one side can simulate the actual rotary radius of retainer when working, satisfy actual working condition in size, the other side can press the roller through the loading plate, make the roller movement under the pressure state, thereby can simulate the actual stress state of retainer, after retainer is damaged or broken, can calculate the actual service life of retainer, has the advantages such as simple operation, high precision. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the perspective drawing of the utility model embodiment one;

[0026] Figure 2 It is the explosion view of the utility model embodiment one;

[0027] Figure 3 It is the perspective drawing of the utility model embodiment one movable piece;

[0028] Figure 4 It is the perspective drawing of the utility model embodiment one guide assembly;

[0029] Figure 5 It is the partial structure drawing of the utility model embodiment one;

[0030] Figure 6 It is the perspective drawing of the utility model embodiment two;

[0031] Figure 7 It is the explosion view of the utility model embodiment two;

[0032] Figure 8 It is the perspective drawing of the utility model embodiment three;

[0033] Figure 9 It is the partial structure drawing of the utility model embodiment three;

[0034] Figure 10 It is the explosion view of the utility model embodiment three;

[0035] Figure 11 It is the perspective drawing of the utility model embodiment three movable piece Figure 1 ;

[0036] Figure 12 It is the perspective drawing of the utility model embodiment three movable piece Figure 2 ;

[0037] Figure 13 It is the installation structure drawing of the utility model bearing retainer and roller.

[0038] Among them:

[0039] 1, base; 2, slide rail; 3, workbench; 4, pressurizing driving piece; 5, guide assembly; 501, stand; 502, rotating shaft; 503, connecting rod; 504, positioning hole; 505, positioning rod; 6, movable piece; 601, bottom plate; 602, first top plate; 603, second top plate; 604, groove; 605, arc-shaped slot; 7, contact piece; 8, loading plate; 9, driving oil cylinder; 10, support; 11, supporting wheel; 12, gear; 13, first guide wheel; 14, second guide wheel; 15, retainer; 16, roller. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0041] As shown in Figures 1-5 and Figure 13 A service life test device for bearing retainer includes a workbench 3, in this example, the workbench 3 is a movable workbench 3, and the bottom of the workbench 3 has a base 1. The base 1 and the workbench 3 are provided with a slide rail 2, that is, at least two guide rails are installed on the surface of the base 1, and a sliding block is arranged on the guide rail. The sliding block is fixed to the position below the workbench 3, so that the workbench 3 can move in the horizontal direction.

[0042] The device also includes a movable piece 6 movably installed on the surface of the workbench 3. The bearing retainer 15 and the roller 16 can be placed above the movable piece 6. In this example, the movable piece 6 includes a bottom plate 601. The upper surface of the bottom plate 601 is provided with a first top plate 602 and a second top plate 603 respectively installed at both sides. The first top plate 602 and the second top plate 603 form an arc-shaped groove 604. The bearing retainer 15 and the roller 16 are placed in the groove 604. When the movable piece 6 moves, the bearing retainer 15 and the roller 16 can move in the groove 604 to simulate the situation of the roller 16 in the bearing raceway.

[0043] Further comprising a loading plate 8 arranged above the movable element 6 and configured to press the roller 16 above the movable element 6 when the movable element 6 moves; specifically, further comprising a pressing driving element 4 installed at the four corners of the workbench 3 and connected with the loading plate 8 and configured to provide a vertical force to the loading plate 8, in this case, the pressing driving element 4 is a hydraulic cylinder, and the four hydraulic cylinders are all arranged in the vertical direction, and the loading plate 8 is fixed on the upper end of the telescopic rod of the hydraulic cylinder, that is, the loading plate 8 is lifted and lowered in the hydraulic driving mode, so as to press the roller 16.

[0044] Further comprising a contact element 7 installed below the loading plate 8 and in contact with the roller 16 during work; in this case, the contact element 7 is a flat plate and is mainly used to directly contact the roller 16, so that the contact element 7 can be easily replaced after being worn out, thereby avoiding damage to the loading plate 8.

[0045] Further comprising a horizontal driving element installed on the workbench 3 and configured to drive the movable element 6 to move on the surface of the workbench 3; in this case, the horizontal driving element comprises a bracket 10 installed on the side surface of the workbench 3, the upper surface of the bracket 10 is hinged with a driving oil cylinder 9, and the end of the telescopic rod of the driving oil cylinder 9 is hinged at the end of the movable element 6, that is, the movable element 6 is moved in the mode of the oil cylinder.

[0046] Further comprising a guide assembly 5 arranged on the workbench 3 and configured to make the movable element 6 move along a specified activity radius in an arc shape when the horizontal driving element drives the movable element 6 to move; in this case, the guide assembly 5 comprises a fixed stand 501, a rotatable rotating shaft 502 installed above the stand 501, a connecting rod 503 installed in the radial direction of the rotating shaft 502, the end of the connecting rod 503 connected with a first top plate 602, a plurality of positioning holes 504 formed on the connecting rod 503, and a positioning rod 505 installed on the upper end of the rotating shaft 502 and capable of being inserted into the positioning hole 504, so as to adjust the rotating radius of the connecting rod 503; more specifically, the stand 501 is fixed at one end of the upper surface of the base 1, and the axis of the rotating shaft 502 is perpendicular to the horizontal plane, so as to realize the guiding effect of the movable element 6 through the connecting rod 503, so that the movable element 6 moves in a specified arc shape; in practice, the position of the positioning hole 504 can be adjusted according to the size of the bearing, so as to expand the test range.

[0047] Further comprising a support element arranged on the workbench 3 and below the movable element 6 and configured to support the movable element 6 during movement and reduce the friction of the movable element 6 during movement; in this case, the support element is two support wheels 11 installed in the inner cavity of the workbench 3, and the axes of the two support wheels 11 are arranged at a certain angle, so as to ensure the stability of the movable element 6 during movement.

[0048] The service life testing device for the bearing retainer is used in the following manner: after the bearing retainer 15 and the rollers 16 are assembled, the movable part 6 is placed above the bearing retainer 15 and the rollers 16, the loading plate 8 is driven downward by the pressure driving part 4, the contact part 7 is brought into contact with the rollers 16 and the rollers 16 are pressed, so as to simulate the force state of the rollers 16 in actual working condition, under the pressure state of the rollers 16, the movable part 6 is driven by the horizontal driving part to move along a circular arc with a specified radius, so as to simulate the size of the actual bearing, the movable part 6 is driven to move back and forth by the extension and retraction of the oil cylinder 9, until the retainer 15 is worn, deformed or broken, the testing is stopped, at this time, the actual service life of the bearing retainer 15 can be calculated, since the size and the force are simulated in the actual working condition, the testing result is more accurate and has more reference value. Embodiment

[0049] As shown in Figures 6-7 the difference between the embodiment and the above-mentioned embodiment one is that the movable part 6 is in arc structure, and the inner wall position is provided with teeth, wherein the arc size of the movable part 6 directly meets the actual size of the bearing ring, and the movable part 6 with different arc can be designed according to the actual working condition;

[0050] The guiding assembly 5 comprises at least two first guiding wheels 13 installed on the surface of the workbench 3, and the number of the first guiding wheels 13 in the example is two.

[0051] The horizontal driving part is a gear 12 installed on the surface of the workbench 3 and rotatable, wherein a motor is installed below the workbench 3, the shaft end of the motor is connected with the gear 12, and the motor can be used to drive the gear 12 to rotate. The gear 12 is engaged with the teeth, and the gear 12 and the at least two first guiding wheels 13 together realize the guiding effect during the movement of the movable part 6.

[0052] The cross section of the contact part 7 is in L-shaped structure, and the contact part 7 and the movable part 6 form a raceway groove convenient for the movement of the bearing retainer 15 and the rollers 16, which not only simulates the working condition of the actual ring in size, but also is closer to the shape of the bearing ring in shape.

[0053] It also comprises a support part installed on the workbench 3 and located below the movable part 6, which is used to support the movable part 6 and reduce the friction during the movement of the movable part 6, in the embodiment, an arc-shaped groove is provided below the movable part 6, and the retainer 15 and the rollers 16 are also installed in the arc-shaped groove, which are used to support and reduce the friction of the movable part 6, and have better stability.

[0054] In this embodiment, the same pressurization method as in Embodiment 1 is still used. The pressure is applied to the contact member 7 by the loading plate 8, and the contact member 7 then applies pressure to the roller 16. In the horizontal drive mode, the gear 12 can drive the toothed movable member 6 to move. The guide effect of the movable member 6 is achieved by the cooperation of the first guide wheel 13 and the gear 12. It has the characteristics of simple structure and accurate test results. Example

[0055] like Figures 8-12 As shown, the difference between this embodiment and the above embodiment 2 is that the guide component 5 includes at least two first guide wheels 13 and at least one second guide wheel 14 mounted on the surface of the workbench 3. The first guide wheel 13 is located on one side of the movable part, and the second guide wheel 14 is located on the other side of the movable part. That is, the gear 12 in embodiment 2 is replaced with the second guide wheel 14. On the one hand, this is to reduce the manufacturing cost of the movable part, so that the tooth structure on the movable part does not need to be set. On the other hand, the use of the second guide wheel 14 in conjunction with the two first guide wheels 13 has a better guiding effect on the movable part 6.

[0056] Furthermore, in this example, since the gear 12 structure is replaced, the horizontal drive component includes a bracket 10 mounted on the side of the worktable 3. The upper surface of the bracket 10 is hinged to a drive cylinder 9, and the end of the telescopic rod of the drive cylinder 9 is hinged to the end position of the movable component 6, that is, the movement of the movable component 6 is achieved by using a cylinder.

[0057] It also includes a support member, which is set on the worktable 3 and located below the movable part 6. It is configured to support the movable part 6 and reduce the friction during the movement of the movable part 6. In this embodiment, an arc-shaped groove 605 is provided below the movable part 6. The retainer 15 and roller 16 are also installed in the arc-shaped groove 605. The retainer 15 and roller 16 serve as support members for the movable part 6 and reduce friction, resulting in better stability.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A service life test device for a bearing retainer, characterized by, The utility model provides a kind of arc-shaped structure's contact element and the bearing retainer and roller of the contact element are placed in the arc-shaped structure, and the contact element is in contact with the roller in working time, so that the roller is pressed to the bearing retainer in the arc-shaped structure, and the bearing retainer is pressed to the roller, so that the bearing retainer and the roller are kept in contact with each other, and the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the 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roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing retainer and the roller are kept in contact with each other, so that the bearing ​ ​ ​ ​ ​ ​ 2. A service life test device for a bearing holder according to claim 1, characterized in that ​ 3. A service life test device for a bearing holder according to claim 2, characterized in that ​ 4. A service life test device for a bearing holder according to claim 1, characterized in that ​ 5. A service life test device for a bearing retainer according to any one of claims 3 to 4, characterized in that, ​ 6. A service life test device for a bearing holder according to claim 1, characterized in that ​ 7. A service life test device for a bearing retainer according to claim 1, characterized by ​ ​ ​ 8. A service life test device for a bearing holder according to claim 1, characterized in that ​ 9. A service life test device for a bearing retainer according to claim 1, characterized by ​ 10. A service life test device for a bearing retainer according to claim 1, characterized by ​

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