Double-station bearing muddy water test device

Abstract

The utility model relates to a double-station bearing muddy water test device which comprises a rack, a transmission shaft rotationally arranged on the rack and a driving device arranged on the rack and used for driving the transmission shaft, test bearings are installed at the two ends of the transmission shaft respectively, and two radial loading devices are symmetrically arranged on the rack. The radial loading devices are used for applying radial loads to the test bearings on the same side, and muddy water spraying assemblies are arranged on the left side and the right side of the rack respectively and used for spraying muddy water to the test bearings on the same side. According to the invention, a bearing muddy water performance test under dynamic and load conditions can be simulated, and the accuracy and reliability of the test are improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing mud and water testing technology, and in particular to a dual-station bearing mud and water testing device. Background Technology

[0002] Constant velocity joint (CVT) bearings are among the most critical components in automotive transmission systems. With the development of the automotive industry, CVT bearings reduce the friction coefficient of the transmission shaft during operation, ensure the rotational accuracy of the gearbox, and adjust the vehicle's speed according to changes in road conditions and driving conditions, thus ensuring the efficiency of the transmission system. Due to complex terrain conditions, vehicles often travel on different weather conditions and road sections. During operation, CVT bearings are subjected not only to radial loads but also to the effects of dust and mud splashes. Therefore, CVT bearings typically undergo multiple tests and inspections before leaving the factory. However, current technology offers limited testing for the mud and water performance of CVT bearings, relying primarily on static testing. Testing equipment simulating actual bearing operating conditions often requires multiple testing fixtures to obtain accurate data, necessitating the use of multiple devices, frequent disassembly and replacement of the bearing under test, and numerous testing cycles, resulting in significant time waste. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a dual-station bearing mud and water testing device.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a dual-position bearing mud and water testing device, including a frame, a transmission shaft rotatably mounted on the frame, and a drive device mounted on the frame for driving the transmission shaft. Test bearings are respectively installed at both ends of the transmission shaft. Two radial loading devices are symmetrically arranged on the frame. The radial loading devices are used to apply radial loads to the test bearings on the same side. Mud and water spraying components are respectively arranged on the left and right sides of the frame. The mud and water spraying components are used to spray mud and water onto the test bearings on the same side.

[0005] As a preferred embodiment, the radial loading device includes a positioning frame, an electric cylinder mounted on the positioning frame, and a force sensor mounted on the end of the push rod of the electric cylinder. The outer ring of the test bearing is fixedly provided with an outer bushing, and a connecting rod is provided on the outer bushing. A tension spring is provided between the force sensor and the connecting rod.

[0006] As a preferred embodiment, the driving device includes a drive motor, a first pulley disposed at the end of the output shaft of the drive motor, and a second pulley disposed on the transmission shaft, wherein the first pulley and the second pulley are connected by belt drive.

[0007] As a preferred scheme, the mud-water spraying assembly comprises a mud-water tank, a water receiving table, a transparent glass cover arranged on the water receiving table, and a test bearing located in the transparent glass cover; the water receiving table and the transparent glass cover form a containing space; an upper end of the water receiving table is provided with a liquid distribution valve block having a water inlet and four water outlets; the mud-water tank is provided with a water pump for pumping mud-water; the water pump is connected with the water inlet of the liquid distribution valve block through a liquid inlet pipe; the water receiving table is provided with a liquid return opening in communication with the containing space; the liquid return opening is connected with the mud-water tank through a liquid return pipe; the four water outlets are respectively connected with mud-water nozzles through liquid distribution pipes; and the test bearing is provided with two mud-water nozzles on two sides thereof.

[0008] As a preferred scheme, the mud-water tank is provided with a stirrer; an upper end of the mud-water tank is provided with a driving mechanism for driving the stirrer to rotate; and the stirrer comprises a vertically arranged stirring shaft and stirring blades located at a lower end of the stirring shaft.

[0009] As a preferred scheme, the driving mechanism comprises a stirring motor; and an output shaft of the stirring motor is connected with the stirring shaft.

[0010] The beneficial effects of the present application are as follows: 1. The two test bearings on the transmission shaft are driven to rotate by the driving device; the mud-water spraying assembly can spray mud-water to the test bearings; the radial loading device applies radial load to the test bearings; thus, the bearing mud-water performance test under dynamic and load working conditions is simulated, and the accuracy and reliability of the test are improved; and the test efficiency is greatly improved since the two test bearings can be tested at the same time.

[0011] 2. Compared with the prior art, the bearing mud-water performance test can be quickly realized by cooperation of the driving device, the radial loading device and the mud-water spraying assembly, without switching between multiple test tools and without frequently disassembling the bearing, so that the bearing test efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the present application;

[0013] Figure 2 It is a structural schematic view of the radial loading device of the present application.

[0014] Marked in the figure: 1, rack, 2, transmission shaft, 3, radial loading device, 31, positioning frame, 32, electric cylinder, 33, force sensor, 34, tension spring, 35, connecting rod, 36, outer bushing, 4, mud-water tank, 41, stirring motor, 42, stirring shaft, 43, stirring blade, 5, driving device, 51, second pulley, 52, first pulley, 53, driving motor, 6, test bearing, 7, transparent glass cover, 8, liquid distribution valve block, 9, water receiving table, 91, liquid return opening, 10, mud-water nozzle. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and examples. It should be understood that, in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the directions or position relations indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0016] Please refer to Figures 1-2 The utility model embodiment provides a kind of double-station bearing mud-water test device, including rack 1, transmission shaft 2 being rotationally arranged on rack 1 and drive device 5 for driving transmission shaft 2 being arranged on rack 1, test bearing 6 is respectively installed at the both ends of transmission shaft 2, two radial loading devices 3 are symmetrically equipped on rack 1, and radial loading device 3 is used to apply radial load to the test bearing 6 of same side, and mud-water injection assembly is respectively equipped on the left and right sides of rack 1, and mud-water injection assembly is used to spray mud-water to the test bearing 6 of same side.

[0017] Among them, radial loading device 3 includes positioning frame 31, electric cylinder 32 being arranged on positioning frame 31 and force sensor 33 being arranged on the push rod end portion of electric cylinder 32, and outer bushing 36 is fixedly arranged on the outer ring of test bearing 6, connecting rod 35 is arranged on outer bushing 36, and tension spring 34 is arranged between force sensor 33 and connecting rod 35. Tension spring 34 has tension spring hook at two ends respectively, and the lower end of force sensor 33 is equipped with first lifting lug, and the upper end of connecting rod 35 is equipped with second lifting lug, one of tension spring hook is hooked with first lifting lug, and the other tension spring hook is hooked with second lifting lug. By the contraction of electric cylinder 32, the bearing outer bushing is loaded to test bearing

[0018] Specifically, drive device 5 includes driving motor 53, first pulley 52 being arranged on the output shaft end portion of driving motor 53 and second pulley 51 being arranged on transmission shaft 2, and first pulley 52 and second pulley 51 are connected by belt drive.

[0019] In combination with Figure 1 And Figure 2As shown, the mud-water spraying assembly comprises a mud-water tank 4, a water receiving platform 9, a transparent glass cover 7 arranged on the water receiving platform 9, the transmission shaft 2 can pass through the transparent glass cover 7, the transparent glass cover 7 is provided with a guide hole for connecting the rod 35 to pass through, the transmission shaft 2 can rotate relative to the transparent glass cover 7, the test bearing 6 is located in the transparent glass cover 7, the water receiving platform 9 and the transparent glass cover 7 form a containing space, the upper end of the water receiving platform 9 is provided with a liquid distribution valve block 8, the liquid distribution valve block 8 has a water inlet and four water outlets, the mud-water tank 4 is provided with a water pump for pumping mud-water, the water pump is connected with the water inlet of the liquid distribution valve block 8 through a liquid inlet pipe, the water receiving platform 9 is provided with a liquid return port 91 which is communicated with the containing space, the liquid return port 91 is connected with the mud-water tank 4 through a liquid return pipe, the four water outlets are connected with mud-water nozzles 10 through liquid distribution pipes respectively, and two mud-water nozzles 10 are arranged on the two sides of the test bearing 6 respectively. The mud-water sprayed from the mud-water nozzles 10 sprays towards the test bearing 6, then falls on the water receiving platform 9, and then flows into the mud-water tank 4 through the liquid return port and the liquid return pipe, so that resource waste is avoided and the scene is kept clean. The transparent glass cover 7 not only can block the splashing of liquid, but also can conveniently observe the flow direction and trajectory of the sprayed liquid. It should be noted that the parts not described in detail in the application are prior art.

[0020] In addition, the mud-water tank 4 is provided with a stirrer, the upper end of the mud-water tank 4 is provided with a driving mechanism for driving the stirrer to rotate, the stirrer comprises a vertically arranged stirring shaft 42 and stirring blades 43 located at the lower end of the stirring shaft 42. The driving mechanism comprises a stirring motor 41, and the output shaft of the stirring motor 41 is connected with the stirring shaft 42.

[0021] The driving device 5 of the application drives the two test bearings 6 on the transmission shaft 2 to rotate, the mud-water spraying assembly can spray mud-water to the test bearings 6, and the radial loading device 3 applies radial load to the test bearings 6, so as to simulate the bearing mud-water performance test under dynamic and load working conditions, and improve the accuracy and reliability of the test. Moreover, the application can simultaneously test two test bearings, so as to greatly improve the test efficiency.

[0022] The application has simple structure and fills the gap of bearing test in mud-water environment in the automobile bearing industry. The application can enhance the technical means of bearing mud-water sealing test, and has high research value and broad market demand in the field of automobile bearings.

[0023] It should be noted that the above embodiments are only used to illustrate the application, but the application is not limited to the above embodiments, and any simple modification, equivalent change and modification made according to the technical essence of the application to the above embodiments all fall within the protection scope of the application.

Claims

1. A dual-station bearing mud and water testing device, characterized in that, The device includes a frame (1), a drive shaft (2) rotatably mounted on the frame (1), and a drive device (5) mounted on the frame (1) for driving the drive shaft (2). Test bearings (6) are installed at both ends of the drive shaft (2). Two radial loading devices (3) are symmetrically arranged on the frame (1). The radial loading devices (3) are used to apply radial load to the test bearings (6) on the same side. Mud and water spraying assemblies are provided on the left and right sides of the frame (1). The mud and water spraying assemblies are used to spray mud and water onto the test bearings (6) on the same side.

2. The dual-station bearing mud and water testing device according to claim 1, characterized in that: The radial loading device (3) includes a positioning frame (31), an electric cylinder (32) mounted on the positioning frame (31), and a force sensor (33) mounted on the push rod end of the electric cylinder (32). The outer ring of the test bearing (6) is fixedly provided with an outer bushing (36), and a connecting rod (35) is provided on the outer bushing (36). A tension spring (34) is provided between the force sensor (33) and the connecting rod (35).

3. The dual-station bearing mud and water testing device according to claim 1, characterized in that: The drive device (5) includes a drive motor (53), a first pulley (52) disposed at the end of the output shaft of the drive motor (53), and a second pulley (51) disposed on the transmission shaft (2). The first pulley (52) and the second pulley (51) are connected by belt drive.

4. The dual-station bearing mud and water testing device according to claim 1, characterized in that: The mud-water spraying assembly includes a mud-water tank (4), a water receiving platform (9), and a transparent glass cover (7) set on the water receiving platform (9). The test bearing (6) is located inside the transparent glass cover (7). The water receiving platform (9) and the transparent glass cover (7) form a receiving space. A liquid distribution valve block (8) is provided at the upper end of the water receiving platform (9). The liquid distribution valve block (8) has an inlet and four outlets. A water pump for pumping out mud-water is provided in the mud-water tank (4). The water pump is connected to the inlet of the liquid distribution valve block (8) through an inlet pipe. A return port (91) connected to the receiving space is provided on the water receiving platform (9). The return port (91) is connected to the mud-water tank (4) through a return pipe. The four outlets are connected to mud-water nozzles (10) through liquid distribution pipes. Two mud-water nozzles (10) are provided on both sides of the test bearing (6).

5. The dual-station bearing mud and water testing device according to claim 4, characterized in that: The mud tank (4) is equipped with a stirrer. The upper end of the mud tank (4) is equipped with a drive mechanism for rotating the stirrer. The stirrer includes a vertically arranged stirring shaft (42) and stirring blades (43) located at the lower end of the stirring shaft (42).

6. The dual-station bearing mud and water testing device according to claim 5, characterized in that: The drive mechanism includes a stirring motor (41), the output shaft of which is connected to the stirring shaft (42).

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