Hydraulic testing device for bearing tester

Abstract

The utility model relates to the technical field of bearing testers, in particular to a hydraulic testing device for a bearing tester, which comprises a cylinder body, and a hydraulic oil inlet is mounted at one end of the outside of the cylinder body. The damper is arranged to prevent vibration generated by a tested bearing in the tester from being transmitted to the hydraulic loading cylinder while transmitting pressure required by the tester, damage and failure of a hydraulic element caused by vibration are avoided, and the pressure in the cylinder body is adjusted in real time through the pressure detection device so that the movable shaft can be driven to test the bearing. A limiting rod is connected into a limiting hole, so that a movable shaft is fixed to a cylindrical block, and disassembly and replacement are convenient; therefore, the problems that a hydraulic element loses efficacy due to vibration damage caused by the fact that a traditional bearing tester hydraulic testing device is not provided with a buffer, the pressure in a cylinder body is inconvenient to adjust in real time, and an output shaft is inconvenient to disassemble, assemble and replace due to abrasion are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing testers, in particular to a hydraulic testing device for a bearing tester. Background Technique

[0002] In the complex system of modern industry and mechanical equipment, bearings, as an indispensable component, play a crucial role. They are widely used in various mechanical equipment, from daily electric tools to large industrial equipment, all of which rely on bearings. A bearing is a mechanical part that supports a rotating body and reduces friction and wear during its movement. According to the working principle and structural characteristics, bearings can be divided into various types. The most direct and significant function of a bearing is to reduce the direct contact between the rotating body and other components, thereby reducing the friction coefficient, minimizing wear. This not only extends the service life of the equipment but also improves the operating efficiency and reduces energy consumption. During the production of bearings, it is necessary to test the bearings to ensure accuracy. However, the traditional hydraulic testing device for bearing testers does not have a buffer, resulting in the hydraulic components being damaged and failing due to vibration, and it is not convenient to adjust the internal pressure of the cylinder in real time, and it is inconvenient to disassemble, install and replace the output shaft after wear. Therefore, there are certain drawbacks.

[0003] To sum up, the utility model solves the existing problems by designing a hydraulic testing device for a bearing tester. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic testing device for a bearing tester to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hydraulic testing device for a bearing tester includes a cylinder body. One end of the outer part of the cylinder body is provided with a hydraulic oil inlet, and one end of the outer part of the cylinder body away from the hydraulic oil inlet is provided with a cylinder head. A number of groups of bolts are equidistantly installed on the outer ring surface of the cylinder head. One end of the inner part of the cylinder body close to the hydraulic oil inlet is provided with a plunger. One end of the outer part of the plunger is provided with a pressure detection device. One end of the pressure detection device away from the plunger is provided with a damper. One end of the outer part of the damper away from the pressure detection device is provided with an output shaft;

[0007] A cylindrical block is installed at one end of the output shaft away from the damper and outside the cylinder block. Limit holes are symmetrically opened at one end of the top and bottom of the outer ring surface of the cylindrical block. A limit groove is opened at one end of the cylindrical block away from the output shaft. A limit block is installed inside the limit groove. A movable shaft is installed at one end of the outer part of the limit block. Telescopic rods are symmetrically installed at one end of the top and bottom of the outer ring surface of the movable shaft. A return spring is installed on the outer ring surface of the telescopic rod. A connecting block is installed at one end of the telescopic rod away from the movable shaft. A limit rod is installed at one end of the connecting block and located outside the telescopic rod.

[0008] As a preferred solution of the present invention, the cylinder head is fixed to the cylinder block by multiple groups of bolts on the outside.

[0009] As a preferred solution of the present invention, the pressure detection device is composed of a force sensor and a pressure detection system. The data measured by the force sensor is transmitted to the detection system in a 4-20ma signal and is fed back to the hydraulic loading system in real time, so as to adjust the pressure inside the cylinder block in real time to ensure the constancy of the loading pressure.

[0010] As a preferred solution of the present invention, one end of the output shaft away from the damper penetrates through the cylinder head and extends to the outside of the cylinder head to be connected to the cylindrical block, and the outer ring surface of the output shaft is slidably connected to the inside of the cylinder head.

[0011] As a preferred solution of the present invention, the outer side dimension of the limit block matches the inner side wall dimension of the limit groove, and the outer side of the limit block is slidably connected to the inner side wall of the limit groove.

[0012] As a preferred solution of the present invention, the outer ring surface dimension of the limit rod matches the inner side wall dimension of the limit hole, and the outer ring surface of the limit rod is slidably connected to the inner side wall of the limit hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, through the design of a hydraulic test device for a bearing tester, by setting a damper to prevent the vibration generated by the tested bearing in the tester from being transmitted to the hydraulic loading cylinder while transmitting the required pressure of the tester, avoiding the damage and failure of hydraulic components caused by vibration. The pressure inside the cylinder block is adjusted in real time through the pressure detection device to facilitate driving the movable shaft to test the bearing. By inserting the limit rod into the limit hole, the movable shaft is fixed on the cylindrical block, which is convenient for disassembly and replacement. Thus, it effectively solves the problems that the traditional hydraulic test device for a bearing tester does not have a buffer, resulting in the damage and failure of hydraulic components due to vibration, and it is not convenient to adjust the pressure inside the cylinder block in real time and the output shaft is worn and inconvenient for disassembly, installation and replacement. Description of the Drawings

[0015] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 For the present utility model Figure 1 Schematic diagram of the right-side structure;

[0017] Figure 3 For the present utility model Figure 2 Schematic diagram of the internal structure;

[0018] Figure 4 For the present utility model Figure 2 Schematic diagram of a partial structure;

[0019] Figure 5 For the present utility model Figure 4 Schematic diagram of the structural stratification.

[0020] In the figure: 1. Cylinder block; 2. Hydraulic oil inlet; 3. Cylinder head; 4. Bolt; 5. Plunger; 6. Pressure detection device; 7. Damper; 8. Output shaft; 9. Cylindrical block; 901. Limit hole; 902. Limit groove; 10. Limit block; 11. Movable shaft; 12. Telescopic rod; 13. Return spring; 14. Connecting block; 15. Limit rod. Specific embodiments

[0021] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] For the embodiments, please refer to Figures 1-5 , this utility model provides a technical solution:

[0026] A hydraulic testing device for a bearing tester, comprising a cylinder block 1, a hydraulic oil inlet 2 is installed at one end of the outer part of the cylinder block 1, a cylinder head 3 is installed at the end of the outer part of the cylinder block 1 away from the hydraulic oil inlet 2, several groups of bolts 4 are installed at equal intervals on the outer ring surface of the cylinder head 3, a plunger 5 is installed at one end of the inner part of the cylinder block 1 close to the hydraulic oil inlet 2, a pressure detection device 6 is installed at one end of the outer part of the plunger 5, a damper 7 is installed at the end of the pressure detection device 6 away from the plunger 5, and an output shaft 8 is installed at the end of the outer part of the damper 7 away from the pressure detection device 6;

[0027] At the end of the output shaft 8 away from the damper 7 and located outside the cylinder block 1, a cylindrical block 9 is installed. At one end of the top and bottom of the outer ring surface of the cylindrical block 9, limiting holes 901 are symmetrically opened. At the end of the outer part of the cylindrical block 9 away from the output shaft 8, a limiting groove 902 is opened. A limiting block 10 is installed inside the limiting groove 902. At one end of the outer part of the limiting block 10, a movable shaft 11 is installed. At one end of the top and bottom of the outer ring surface of the movable shaft 11, telescopic rods 12 are symmetrically installed. A return spring 13 is installed on the outer ring surface of the telescopic rod 12. At the end of the telescopic rod 12 away from the movable shaft 11, a connecting block 14 is installed. A limiting rod 15 is installed at one end of the outer part of the connecting block 14 and located at one end of the telescopic rod 12.

[0028] Specifically, referring to Figure 3 , at the end of the output shaft 8 away from the damper 7, it penetrates through the cylinder head 3 and extends to the outside of the cylinder head 3 to be connected with the cylindrical block 9, and the outer ring surface of the output shaft 8 is slidably connected with the inside of the cylinder head 3, thus ensuring that the movement of the output shaft 8 inside the cylinder block 1 drives the movable shaft 11 close to the bearing for testing.

[0029] Furthermore, the cylinder head 3 is fixed to the cylinder block 1 through multiple groups of bolts 4 on the outside, thus ensuring the convenience of disassembly, assembly and maintenance of the inside of the cylinder block 1.

[0030] Further, the pressure detection device 6 is composed of a force sensor and a pressure detection system. The data measured by the force sensor is transmitted to the detection system in the form of a 4-20 mA signal and is fed back to the hydraulic loading system in real time, enabling it to adjust the pressure inside the cylinder block 1 in real time to ensure the constancy of the loading pressure, thereby facilitating the real-time adjustment of the pressure inside the cylinder block 1 to drive the movable shaft 11 to test the bearing.

[0031] Further, the outer side dimension of the limit block 10 matches the inner side wall dimension of the limit groove 902, and the outer side of the limit block 10 is slidably connected to the inner side wall of the limit groove 902, thus ensuring that the limit block 10 is inserted into the limit groove 902 to facilitate the installation of the movable shaft 11 on the cylindrical block 9 and is convenient for disassembly and replacement.

[0032] Specifically, referring to Figure 5 , the outer ring surface dimension of the limit rod 15 matches the inner side wall dimension of the limit hole 901, and the outer ring surface of the limit rod 15 is slidably connected to the inner side wall of the limit hole 901. Thus, it is ensured that by pulling the connecting block 14 outwards, the connecting block 14 moves to synchronously stretch the telescopic rod 12 and the return spring 13. Then, when the limit block 10 is inserted into the limit groove 902 and the connecting block 14 is released, the restriction of the return spring 13 is released to drive the limit rod 15 to be inserted into the limit hole 901, thereby fixing the movable shaft 11 on the cylindrical block 9.

[0033] The working process of the present utility model: When using a hydraulic test device for a bearing tester designed by this solution to detect during the production of bearings, hydraulic oil is injected into the cylinder block 1 through the hydraulic oil inlet 2 to drive the plunger 5 to move to the right, synchronously driving the pressure detection device 6 and the damper 7 to move and driving the output shaft 8 to move to test the bearing through the movable shaft 11. By setting the damper 7, while transmitting the required pressure of the tester, it prevents the vibration generated by the bearing under test in the tester from being transmitted to the hydraulic loading cylinder, avoiding damage and failure of hydraulic components caused by vibration. Moreover, the pressure detection device 6 is composed of a force sensor and a pressure detection system. The data measured by the force sensor is transmitted to the detection system in the form of a 4-20 mA signal and is fed back to the hydraulic loading system in real time, enabling it to adjust the pressure inside the cylinder block 1 in real time to ensure the constancy of the loading pressure, thereby facilitating the real-time adjustment of the pressure inside the cylinder block 1 to drive the movable shaft 11 to test the bearing. After long-term testing of the bearing, the movable shaft 11 will be worn and needs to be replaced. By pulling the connecting block 14 outwards, the connecting block 14 moves to synchronously stretch the telescopic rod 12 and the return spring 13. Then, when the limit block 10 is inserted into the limit groove 902 and the connecting block 14 is released, the restriction of the return spring 13 is released to drive the limit rod 15 to be inserted into the limit hole 901, thereby fixing the movable shaft 11 on the cylindrical block 9. The operation is convenient and it is convenient for disassembly and replacement.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hydraulic testing device for a bearing tester, comprising a cylinder block (1), characterized in that: One end of the outside of the cylinder block (1) is provided with a hydraulic oil inlet (2). One end of the outside of the cylinder block (1) far from the hydraulic oil inlet (2) is provided with a cylinder head (3). A number of groups of bolts (4) are equidistantly installed on the outer ring surface of the cylinder head (3). One end of the inside of the cylinder block (1) close to the hydraulic oil inlet (2) is provided with a plunger (5). One end of the outside of the plunger (5) is provided with a pressure detection device (6). One end of the pressure detection device (6) far from the plunger (5) is provided with a damper (7). One end of the outside of the damper (7) far from the pressure detection device (6) is provided with an output shaft (8); One end of the output shaft (8) far from the damper (7) and located outside the cylinder block (1) is provided with a cylindrical block (9). Limit holes (901) are symmetrically opened at one end of the top and bottom of the outer ring surface of the cylindrical block (9). A limit groove (902) is opened at one end of the outside of the cylindrical block (9) far from the output shaft (8). A limit block (10) is installed inside the limit groove (902). One end of the outside of the limit block (10) is provided with a movable shaft (11). Telescopic rods (12) are symmetrically installed at one end of the top and bottom of the outer ring surface of the movable shaft (11). A return spring (13) is installed on the outer ring surface of the telescopic rod (12). One end of the telescopic rod (12) far from the movable shaft (11) is provided with a connecting block (14). A limit rod (15) is installed outside the connecting block (14) and at one end of the telescopic rod (12).

2. The hydraulic testing device for a bearing tester according to claim 1, wherein: The cylinder head (3) is fixed to the cylinder block (1) through multiple groups of bolts (4) on the outside.

3. The hydraulic testing device for a bearing tester according to claim 1, characterized in that: The pressure detection device (6) is composed of a force sensor and a pressure detection system. The data measured by the force sensor is transmitted to the detection system in a 4-20ma signal and is real-time fed back to the hydraulic loading system to adjust the pressure in the cylinder block (1) in real time to ensure the constancy of the loading pressure.

4. A hydraulic test device for a bearing tester according to claim 1, characterized in that: One end of the output shaft (8) far from the damper (7) penetrates through the cylinder head (3) and extends to the outside of the cylinder head (3) to be connected to the cylindrical block (9), and the outer ring surface of the output shaft (8) is slidably connected to the inside of the cylinder head (3).

5. The hydraulic testing device for a bearing tester according to claim 1, wherein: The outer side dimension of the limit block (10) matches the inner side wall dimension of the limit groove (902), and the outer side of the limit block (10) is slidably connected to the inner side wall of the limit groove (902).

6. The hydraulic testing device for a bearing tester according to claim 1, characterized in that: The outer ring surface dimension of the limit rod (15) matches the inner side wall dimension of the limit hole (901), and the outer ring surface of the limit rod (15) is slidably connected to the inner side wall of the limit hole (901).

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