Joint bearing durability test device

Abstract

The utility model provides a knuckle bearing durability test device, which comprises a mounting seat, a first connecting shaft and a second connecting shaft are arranged on the mounting seat, the first connecting shaft comprises a mounting part positioned in the middle of the first connecting shaft, and the second connecting shaft is arranged on the mounting part in a penetrating manner. A detection station for installation of a bearing to be detected is formed between the second connecting shaft and the installation part, and one end of the first connecting shaft and one end of the second connecting shaft are both provided with loading assemblies for applying axial loads. The other end of the first connecting shaft and the other end of the second connecting shaft are each provided with a swing assembly used for applying reciprocating swing force. Aiming at the defects in the prior art, the utility model provides the durability test device for the knuckle bearing, which can detect parameters such as durability, abrasion loss, service life, torque and the like of the knuckle bearing.

Description

Technical Field

[0001] The utility model relates to a durability test device for a spherical plain bearing. Background Art

[0002] A bearing is an important component for supporting the rotation of a mechanical body. Due to the wide range of uses of bearings, many types of bearings have emerged. Among them, a spherical plain bearing is a bearing used for low-speed swinging or rotating motions. Compared with ordinary bearings, it does not have rollers. By setting the inner ring and the outer ring to be respectively provided with an outer spherical surface and an inner spherical surface, and then making the two spherical surfaces contact each other to form a swinging or rotating motion between the corresponding device and the rotating shaft. Before leaving the factory, spherical plain bearings often need to be tested for parameters such as durability, wear amount, life detection, and torque detection. Therefore, corresponding test devices need to be set up. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a durability test device for a spherical plain bearing, which can detect parameters such as the durability, wear amount, life detection, and torque detection of the spherical plain bearing.

[0004] To achieve the above object, the utility model provides a durability test device for a spherical plain bearing, which includes a mounting base. A first connecting shaft and a second connecting shaft are arranged on the mounting base. The first connecting shaft includes a mounting portion at its middle part. The second connecting shaft is arranged through the mounting portion, and a detection station for mounting a bearing to be tested is formed between the second connecting shaft and the mounting portion. Loading components for applying axial loads are arranged at one end of the first connecting shaft and one end of the second connecting shaft respectively. Swing components for applying reciprocating swing forces are arranged at the other end of the first connecting shaft and the other end of the second connecting shaft respectively.

[0005] The advantages of adopting the above technical solution are as follows: By setting the mounting base, arranging the first connecting shaft and the second connecting shaft on the mounting base, arranging the mounting portion at the middle part of the first connecting shaft, and making the second connecting shaft pass through the mounting portion, the detection station is formed by the second connecting shaft and the mounting portion. The second connecting shaft and the mounting portion are respectively connected to the inner ring and the outer ring of the bearing to be tested. Then, loading components are arranged at one end of the first connecting shaft and one end of the second connecting shaft respectively. Loads are applied to the outer ring and the inner ring of the bearing to be tested through the two loading components. And swing components are arranged at the other end of the first connecting shaft and the other end of the second connecting shaft respectively. Reciprocating swing forces are applied to the outer ring and the inner ring through the swing components, so that the bearing to be tested moves reciprocally in a loaded state, and then parameters such as the durability performance, wear amount, and service life of the bearing to be tested are detected.

[0006] The utility model can be further configured as follows: hole portions are provided at the four circumferences of the mounting seat corresponding to the detection stations, the hole portions can be penetrated by the first connecting shaft or the second connecting shaft, cylindrical roller bearings and retaining edges at both axial ends are provided in the hole portions, and the cylindrical roller bearings are used to provide rotational support for the first connecting shaft or the second connecting shaft.

[0007] Through further configuration, hole portions for the first connecting shaft or the second connecting shaft to penetrate are provided at the four circumferences of the mounting seat corresponding to the detection stations, cylindrical roller bearings and retaining edges are provided in the hole portions, the cylindrical roller bearings are limited by the retaining edges, and the cylindrical roller bearings provide rotational support for the first connecting shaft or the second connecting shaft penetrating through them, ensuring the stability of the detection test.

[0008] The utility model can be further configured as follows: the mounting seat includes a support table with a middle depression and a cover plate, concave portions are provided at the four circumferences of the support table, the cover plate is detachably connected to the concave portions, and the hole portions are formed by the combination of the concave portions and the cover plate.

[0009] Through further configuration, the mounting seat includes a support table and a cover plate, and hole portions for the first connecting shaft or the second connecting shaft to penetrate are formed by the combination of the support table and the cover plate, facilitating the disassembly and assembly of the device and the adjustment of the bearing to be tested therein.

[0010] The utility model can be further configured as follows: transition pieces and load-bearing connection blocks for positioning connection are provided at one ends of the first connecting shaft and the second connecting shaft, the transition pieces include a housing, two tapered roller bearings in the housing, and a first shaft portion, one end of the first shaft portion is clamped with the load-bearing connection block, the other end of the first shaft portion extends into the housing and forms a rotational connection with the housing through the two tapered roller bearings, and a second shaft portion for connecting a loading assembly is provided on the housing.

[0011] Through further configuration, load-bearing connection blocks and transition pieces are provided at one ends of the first connecting shaft and the second connecting shaft, the load-bearing connection blocks are positioned and connected to one ends of the first connecting shaft or the second connecting shaft, then a housing, two tapered roller bearings in the housing, and a first shaft portion are provided in the transition pieces, one end of the first shaft portion is clamped with the load-bearing connection block, the other end of the first shaft portion extends into the housing and cooperates with the two tapered roller bearings to form a rotational connection with the housing, ensuring a better connection effect, and finally a second shaft portion for connecting with the loading assembly is formed on the housing to complete the connection between the first connecting shaft or the second connecting shaft and the loading assembly.

[0012] The utility model can be further configured as follows: the loading assembly includes a force sensor, a hydrostatic oil cylinder, and a magnetostrictive displacement sensor, the force sensor is connected to the second shaft portion, and both ends of the hydrostatic oil cylinder are respectively connected to the force sensor and the magnetostrictive displacement sensor.

[0013] Through further setting, a sensor, a hydrostatic cylinder and a magnetostrictive displacement sensor are arranged in the loading component. The force sensor is connected to the second shaft portion. When a load is applied to the first connecting shaft or the second connecting shaft by the hydrostatic cylinder, the applied load can be recorded by the force sensor, and the magnetostrictive displacement sensor located at the other end of the hydrostatic cylinder can measure the actual displacement value of the first connecting shaft or the second connecting shaft.

[0014] The utility model can be further set as follows: extension shafts are arranged at the other ends of the first connecting shaft and the second connecting shaft. The swing component includes a torque sensor, an intermediate rotating shaft, a synchronous belt and a swing cylinder. The torque sensor is respectively connected to the swing cylinder and the extension shaft through coupling parts. The intermediate rotating shaft is arranged above the torque sensor, and the synchronous belt is respectively meshed with the intermediate rotating shaft and the torque sensor.

[0015] Through further setting, extension shafts are arranged at the other ends of the first connecting shaft and the second connecting shaft. A torque sensor, an intermediate rotating shaft, a synchronous belt and a swing cylinder are arranged in the swing component. The swing cylinder outputs power, and is connected to the extension shaft through the torque sensor to form repeated rotation of the first connecting shaft or the second connecting shaft. Additionally, the synchronous belt and the intermediate rotating shaft located above the torque sensor are provided, and the intermediate rotating shaft can be driven to rotate by the synchronous belt. Then, by connecting a corresponding encoder to the intermediate rotating shaft, the swinging condition can be recorded. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0017] Figure 2 is a schematic diagram of the mating structure of the mounting seat, the first connecting shaft and the second connecting shaft in the embodiment of the utility model;

[0018] Figure 3 is a top view of the mating structure of the mounting seat, the first connecting shaft and the second connecting shaft in the embodiment of the utility model;

[0019] Figure 4 is an embodiment of the utility model Figure 3 is a cross-sectional view taken along line B-B in the embodiment;

[0020] Figure 5 is a schematic structural diagram of the loading component in the embodiment of the utility model;

[0021] Figure 6 is a schematic diagram of the internal structure of the transition piece in the embodiment of the utility model;

[0022] Figure 7 is a schematic structural diagram of the swing component in the embodiment of the utility model;

[0023] Wherein: mounting base 1; hole portion 11; cylindrical roller bearing 12; rib 13; support platform 14; cover plate 15; first connecting shaft 2; mounting portion 21; second connecting shaft 3; bearing under test 4; loading assembly 5; transition member 51; housing 511; tapered roller bearing 512; first shaft portion 513; second shaft portion 514; load-bearing connection block 52; force sensor 53; hydrostatic oil cylinder 54; magnetostrictive displacement sensor 55; swing assembly 6; extension shaft 61; torque sensor 62; intermediate rotating shaft 63; synchronous belt 64; swing oil cylinder 65. Detailed implementation manners

[0024] An embodiment of a joint bearing durability test device of the present utility model is as Figure 1-7 shown: It includes a mounting base 1, a first connecting shaft 2 and a second connecting shaft 3 are arranged on the mounting base 1. The first connecting shaft 2 includes a mounting portion 21 located in the middle thereof. The second connecting shaft 3 is arranged through the mounting portion 21, and a detection station for mounting the bearing under test 4 is formed between the second connecting shaft 3 and the mounting portion 21. Loading assemblies 5 for applying axial loads are arranged at one ends of the first connecting shaft 2 and the second connecting shaft 3 respectively, and swing assemblies 6 for applying reciprocating swinging forces are arranged at the other ends of the first connecting shaft 2 and the second connecting shaft 3 respectively.

[0025] Hole portions 11 are arranged around the detection station corresponding to the mounting base 1. The hole portions 11 can be penetrated by the first connecting shaft 2 or the second connecting shaft 3. A cylindrical roller bearing 12 and ribs 13 at both axial ends are arranged in the hole portions 11. The cylindrical roller bearing 12 is used to provide rotational support for the first connecting shaft 2 or the second connecting shaft 3.

[0026] The mounting base 1 includes a middle concave support platform 14 and a cover plate 15. Concave portions are arranged around the support platform 14. The cover plate 15 is detachably connected to the concave portions. The hole portions 11 are formed by the combination of the concave portions and the cover plate 15.

[0027] Transition members 51 and load-bearing connection blocks 52 for positioning connection are arranged at one ends of the first connecting shaft 2 and the second connecting shaft 3 respectively. The transition member 51 includes a housing 511, two tapered roller bearings 512 located in the housing, and a first shaft portion 513. One end of the first shaft portion 513 is clamped with the load-bearing connection block, and the other end of the first shaft portion 513 extends into the housing and is rotatably connected to the housing 511 through the two tapered roller bearings 512. A second shaft portion 514 for connecting the loading assembly is arranged on the housing 511.

[0028] The loading component 5 includes a force sensor 53, a hydrostatic oil cylinder 54, and a magnetostrictive displacement sensor 55. The force sensor 53 is connected to the second shaft portion 514, and both ends of the hydrostatic oil cylinder 54 are connected to the force sensor 53 and the magnetostrictive displacement sensor 55 respectively.

[0029] Extension shafts 61 are provided at the other ends of the first connecting shaft 2 and the second connecting shaft 3. The swing component 6 includes a torque sensor 62, an intermediate rotating shaft 63, a synchronous belt 64, and a swing oil cylinder 65. The torque sensor 62 is connected to the swing oil cylinder 65 and the extension shaft 61 respectively through couplings. The intermediate rotating shaft 63 is arranged above the torque sensor 62, and the synchronous belt 64 is engaged with the intermediate rotating shaft 63 and the torque sensor 62 respectively.

[0030] The above examples are only one of the preferred specific examples of the present invention. The ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A spherical bearing durability test device, characterized in that: It includes a mounting seat, on which a first connecting shaft and a second connecting shaft are arranged, the first connecting shaft includes a mounting portion located in the middle thereof, the second connecting shaft is passed through the mounting portion, and a detection station for installing a bearing to be tested is formed between the second connecting shaft and the mounting portion, a loading assembly for applying an axial load is arranged at one end of the first connecting shaft and one end of the second connecting shaft, and a swing assembly for applying a reciprocating swinging force is arranged at the other end of the first connecting shaft and the other end of the second connecting shaft.

2. The spherical plain bearing durability testing device according to claim 1, characterized in that: The mounting seat is provided with holes around the corresponding detection station, and the first connecting shaft or the second connecting shaft can be passed through the holes. A cylindrical roller bearing and ribs at both ends of the axial direction are provided in the holes, and the cylindrical roller bearing is used to provide rotation support for the first connecting shaft or the second connecting shaft.

3. The spherical plain bearing durability testing device according to claim 2, characterized in that: The mounting seat comprises a support platform with a central depression and a cover plate. The support platform is provided with recesses on all sides. The cover plate is detachably connected to the recesses. The hole is formed by combining the recesses and the cover plate.

4. The spherical plain bearing durability testing device according to claim 1, 2 or 3, characterized in that: A transition piece and a load-bearing connection block for positioning connection are provided at one end of each of the first connecting shaft and the second connecting shaft. The transition piece includes a housing, two tapered roller bearings located in the housing, and a first shaft portion. One end of the first shaft portion is fixed to the load-bearing connection block, and the other end of the first shaft portion extends into the housing and is rotatably connected to the housing through two tapered roller bearings. A second shaft portion connected to a loading assembly is provided on the housing.

5. The spherical plain bearing durability testing device according to claim 4, characterized in that: The loading assembly includes a force sensor, a hydrostatic cylinder and a magnetostrictive displacement sensor. The force sensor is connected to the second shaft portion, and two ends of the hydrostatic cylinder are respectively connected to the force sensor and the magnetostrictive displacement sensor.

6. The spherical plain bearing durability testing device according to claim 1, 2 or 3, characterized in that: An extension shaft is provided at the other end of the first connecting shaft and the second connecting shaft. The swing assembly includes a torque sensor, an intermediate rotating shaft, a synchronous belt and a swing cylinder. The torque sensor is connected to the swing cylinder and the extension shaft respectively through a coupling. The intermediate rotating shaft is arranged above the torque sensor, and the synchronous belt is meshed with the intermediate rotating shaft and the torque sensor respectively.

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