Bearing performance testing machine

Abstract

A bearing performance testing machine comprises an installation support, a test installation device is arranged on the installation support, a radial loading mechanism is arranged on the extension line of the radial end of the test installation device, and an axial loading mechanism and a driving mechanism are arranged at the two ends of the extension line of the axial end of the test installation device respectively. A clamp used for clamping a bearing to be tested is arranged in the test installation device, an extension shaft is arranged between the clamp and the axial loading mechanism, and the two axial ends of the extension shaft are a fixed end connected with the axial loading mechanism and a force application end used for applying axial force to the clamp respectively. And an adjusting mechanism with adjustable length is arranged between the force application end and the fixed end. The beneficial effects of the utility model are that through the arrangement of the length-adjustable adjusting mechanism, the length of the extension shaft can be flexibly adjusted, so that the test requirements of bearings of different models can be met, the extension shaft does not need to be replaced, and the adaptability and convenience of the testing machine are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of test equipment, in particular to a kind of bearing performance testing machine. BACKGROUND

[0002] Bearing testing machine is a kind of precision test equipment, for simulating and evaluating the performance of bearing under actual working conditions. This tester can exert radial load on the bearing, simulate the radial force of the bearing when rotating, and axial load, simulate the influence of external impact or structural deviation on the bearing. By precisely controlling the torque and test parameters, the tester can test the load-carrying capacity, rigidity, fatigue life and performance under extreme conditions of the bearing. The control system allows precise adjustment of load size, test speed and duration, while sensors and data acquisition systems are used to monitor key parameters such as temperature, vibration and noise of the bearing during testing. These test results are crucial for engineers as they can be used to collect key data, optimize bearing design, improve its reliability and durability, and ensure the performance and safety of bearings in various applications.

[0003] The existing bearing testing machine generally needs to install the bearing into the corresponding clamp and place the clamp holding the bearing to be tested inside the hollow test cavity of the test installation device, and connect the two ends of the clamp to the connecting shaft of the driving mechanism and the connecting shaft of the axial loading mechanism. Generally speaking, since adjusting the distance between the clamp and the connecting shaft of the driving mechanism requires adjusting the position of the radial loading mechanism loading center point at the same time, adjusting the distance between the clamp and the connecting shaft of the axial loading mechanism can effectively reduce the adjustment and testing difficulty when the gear of the bearing to be tested changes.

[0004] In the prior art, an extension shaft is usually arranged between the axial loading mechanism connecting shaft and the clamp axial loading surface, and the extension shaft is replaced to adjust the loading force of the axial loading mechanism, which requires different extension shafts for the entire testing machine; Or, without replacing the extension shaft, the axial loading mechanism is directly extended and abuts against the loading surface of the clamp for testing, but this will sacrifice part of the loading force of the axial loading mechanism, resulting in incomplete test data. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of bearing performance testing machine that can adjust the length of extension shaft to adapt to various sizes of bearing to be tested in view of the deficiency of prior art.

[0006] In order to achieve the above object, the technical scheme of the utility model is as follows: a bearing performance testing machine, including installation support, be provided with test installation device on the installation support, be provided with radial loading mechanism on the radial end extension line of test installation device, the both ends on the axial end extension line of test installation device are provided with axial loading mechanism and drive mechanism respectively, be provided with clamp for clamping bearing to be measured in test installation device, be provided with extension shaft between clamp and axial loading mechanism, the both ends of extension shaft axial are fixed end connected with axial loading mechanism and force applying end for applying axial force to clamp respectively, be provided with adjustable length adjusting mechanism between force applying end and fixed end.

[0007] The utility model discloses the beneficial effects are: first, through setting adjustable length adjusting mechanism, realized the flexible adjustment of extension shaft length, can adapt to the test demand of different models bearing, need not replace extension shaft, greatly improved the adaptability and convenience of testing machine. Secondly, because of the existence of adjusting mechanism, can accurately adjust the distance between axial loading mechanism and clamp under not sacrificing axial loading force, ensure the accuracy and integrity of test data. Thirdly, this design reduces the downtime and maintenance cost caused by replacing extension shaft, improves the continuous operation ability and economic benefit of testing machine. Finally, the optimization of overall structure makes the operation of testing machine more simple, reduces the skill requirement of operator, improves the working stability and reliability of testing machine simultaneously.

[0008] Further, the adjusting mechanism includes a plurality of extension blocks, and the plurality of extension blocks are detachably fixed through the fixing pieces.

[0009] The adjusting mechanism comprising a plurality of extension blocks and being detachably fixed through the fixing pieces has the following beneficial effects: first, the modular design makes the length adjustment of the extension shaft more flexible and fast, and by increasing or decreasing the number of extension blocks, the test demand of bearings of different sizes can be met, greatly improving the versatility and application range of the testing machine. Second, the detachable nature of the extension blocks makes maintenance and replacement more convenient, reduces maintenance difficulty and cost, and prolongs the service life of the testing machine. Third, since the extension blocks are connected through the fixing pieces, the stability during adjustment can be ensured, and uneven distribution of axial force caused by adjustment is avoided, thereby ensuring the accuracy of test results. Fourth, this design also facilitates standardized production, improves production efficiency, and is also conducive to inventory management and spare parts supply.

[0010] Further, an end face of the extension block along the axial direction of the extension shaft is provided with fixed holes and connecting holes which are distributed along the circumferential direction, the fixing member includes a placing part and a rod part, and the connecting holes and the fixed holes can be matched with the rod part to realize the fixation between adjacent extension blocks, and the fixed holes are provided with a placing groove on one side along the axial direction of the extension shaft for placing the placing part.

[0011] The extension block and the fixing member have the following beneficial effects: first, the fixed holes and the connecting holes on the extension block are distributed along the circumferential direction, so that the rod part of the fixing member can realize multi-directional fixation between adjacent extension blocks, which increases the stability of the connection; second, the fixed holes and the connecting holes make the connection between the extension blocks more flexible, and the number of extension blocks can be increased or decreased according to actual needs, so as to realize accurate length adjustment; third, the design of the placing groove allows the placing part to be placed, which not only enhances the stability of the fixing member, but also ensures that the fixing member does not hinder the axial movement of the extension shaft when fixing the extension block, thereby ensuring the smoothness and accuracy of the adjustment mechanism during adjustment; fourth, this structure is convenient for quick disassembly and reassembly, which improves the maintenance efficiency and use convenience of the testing machine; and finally, this design reduces the types and number of parts, reduces production costs, and makes the appearance of the testing machine more simple and the operation interface more humanized.

[0012] Further, the depth of the placing groove is greater than the height of the placing part, and the length of the rod part is less than the depth after the connecting hole and the fixed hole are spliced.

[0013] The selection of the parameters of the placing groove and the rod part has the following beneficial effects: the depth of the placing groove is greater than the height of the placing part, which ensures that the fixing member can be stably embedded in the extension block during installation and will not fall off due to vibration or other external forces, thereby improving the stability and reliability of the entire testing machine structure. At the same time, this design also protects the fixing member from axial force, effectively avoiding wear or damage that may be caused by direct contact. On the other hand, the length of the rod part is less than the depth of the connecting hole and the fixed hole, which ensures that the fixing member still has enough length to cooperate with the fixed hole of another extension block after passing through the connecting hole, thereby realizing effective connection between the extension blocks. This design not only enhances the firmness of the connection, but also makes the combination between the extension blocks more flexible, so that the relative position and number of extension blocks can be easily adjusted according to different testing needs. In addition, this structure also facilitates the quick and convenient disassembly of the fixing member when the extension block needs to be replaced or maintained, thereby improving the maintainability and operation convenience of the testing machine.

[0014] Further, the test installation device is provided with a test cavity for placing the clamp, and the clamp is provided with a positioning protrusion on the outer circumferential surface of each side of the bearing to be tested in the axial direction.

[0015] The test installation device and the clamp positioning structure have the following beneficial effects: first, the test cavity provides a dedicated space for placing and fixing the clamp, which ensures the stability of the bearing to be tested during the test and avoids test errors caused by the displacement of the clamp. Second, the positioning protrusion of the clamp protruding on the outer circumferential surface of each side of the bearing to be tested in the axial direction cooperates with the corresponding positioning slot in the test cavity to form a positioning mechanism. This mechanism can effectively prevent the clamp from moving axially or radially during the test, thereby ensuring the accuracy and repeatability of the test. In addition, the positioning slot is provided on both sides of each positioning protrusion, which further enhances the fixing effect of the clamp and ensures the stability of the clamp even when subjected to a large axial or radial force. This structure also facilitates the quick installation and disassembly of the clamp, improving the operation efficiency of the testing machine. Finally, due to the precise cooperation between the positioning protrusion and the positioning slot, the risk of bearing damage caused by improper installation of the clamp is reduced, the service life of the clamp is prolonged, and the maintenance cost is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the bearing performance testing machine of the embodiment of the present application;

[0017] Figure 2 is a perspective view of the test installation device of the embodiment of the present application;

[0018] Figure 3 is a perspective view of the test installation device of the embodiment of the present application;

[0019] Figure 4 is a cross-sectional view of the two extension blocks after splicing of the embodiment of the present application. DETAILED DESCRIPTION

[0020] The bearing performance testing machine of the embodiment of the present application is Figures 1-4As shown: including installation support 1, installation support 1 is provided with test installation device 2, the radial end extension line of test installation device 2 is provided with radial loading mechanism 3, the axial end extension line of test installation device 2 is provided with axial loading mechanism 4 and driving mechanism 5 respectively, test installation device 2 is provided with test cavity 21, test cavity 21 is provided with fixture 6 for clamping the bearing to be tested (not shown in the figure) in it. The fixture 6 is protrudingly provided with a ring-shaped positioning protrusion 62 on the two sides of the outer peripheral surface of the bearing to be tested (not shown in the figure) along the axial direction, and the test cavity 21 is provided with a positioning groove 211 on both sides of each positioning protrusion 62, so that the bearing to be tested (not shown in the figure) can be conveniently placed into the test cavity 21 and taken out from the test cavity 21 after being clamped in the fixture 6.

[0021] The fixture 6 and the axial loading mechanism 4 are provided with an extension shaft 7, and the axial ends of the extension shaft 7 are respectively a fixed end 71 connected to the connecting shaft 41 of the axial loading mechanism 4 through a fastener and a force applying end 72 for applying an axial force to the loading end face 61 of the fixture 6. A force applying disc 721 is provided at the force applying end 72, the force applying disc 721 is provided with a lead-in hole 722, and the loading end face 61 of the corresponding fixture 6 is provided with a guide column 611 corresponding to the lead-in hole 722. After the force applying disc 721 is moved to the lead-in hole 722 and inserted into the guide column 611, the force applying disc 721 continues to move until it abuts against the loading end face 61.

[0022] An adjusting mechanism 7 composed of a plurality of extension blocks 731 is arranged between the fixed end 71 and the force applying end 72, and the extension blocks 731 are arranged with fixed holes 7311 and connecting holes 7313 at an axial end of the extension shaft 7 in a circumferentially spaced manner. When one of the adjacent extension blocks 731 is arranged with a fixed hole 7311, the other is arranged with a connecting hole 7313. The fixed holes 7311 are provided with a placing groove 7312 on one side of the extension shaft 7 in the axial direction. The adjacent extension blocks 731 are connected and fixed by a fixing member 732, which includes a placing part 7321 that can be completely immersed in the placing groove 7312 and a rod part 7322 for connecting the fixed holes 7311 and the connecting holes 7313 of the adjacent extension blocks 731.

[0023] When the extension shaft 7 needs to be adjusted, the placing part 7321 of the fixing member 732 is placed in the placing groove 7312 of the extension block 731, the rod part 7322 is passed through the fixed hole 7311 and the connecting hole 7313, and a certain distance is left in the connecting hole 7313 connected thereto from the extension block 731 and other extension blocks 731. The above-mentioned distance can be half the depth of the connecting hole 7313.

[0024] After the extension block 731 is spliced into the adjusting mechanism 73, the fixed end 71 and the force applying end 72 are connected with the extension block 731 through the half connecting hole 7313 left by the extension block 731, that is, the fixed end 71 and the force applying end 72 are provided with through holes or similar fixing holes 7311 and placing grooves 7312 on the end face adjacent to the adjusting mechanism 73.

[0025] The above embodiment is only one of the preferred specific embodiments of the present application, and the usual changes and replacements made by those skilled in the art within the technical scheme of the present application are all included in the protection scope of the present application.

Claims

1. A bearing performance testing machine, comprising a mounting bracket, a test mounting device mounted on the mounting bracket, a radial loading mechanism mounted on the radial extension line of the test mounting device, an axial loading mechanism and a driving mechanism respectively mounted at both ends of the axial extension line of the test mounting device, a clamp for holding the bearing to be tested being disposed within the test mounting device, and an extension shaft being disposed between the clamp and the axial loading mechanism, characterized in that: The two ends of the extension shaft are a fixed end connected to the axial loading mechanism and a force-applying end for applying axial force to the clamp, respectively. An adjustable length adjustment mechanism is provided between the force-applying end and the fixed end.

2. The bearing performance testing machine according to claim 1, characterized in that: The adjustment mechanism includes several extension blocks, which are detachably fixed to each other by fasteners.

3. The bearing performance testing machine according to claim 2, characterized in that: The extension block has fixing holes and connecting holes distributed circumferentially on one end face along the extension axis. The fixing component includes a placement part and a rod part. Both the connecting holes and fixing holes can cooperate with the rod part to fix adjacent extension blocks. The fixing hole has a placement groove for the placement part to be inserted into on one side along the extension axis.

4. The bearing performance testing machine according to claim 3, characterized in that: The depth of the placement groove is greater than the height of the placement part, and the length of the rod part is less than the depth after the connecting hole and the fixing hole are joined together.

5. The bearing performance testing machine according to claim 1, characterized in that: The test installation device is provided with a test cavity for placing the fixture. The fixture has positioning protrusions on both outer circumferential surfaces along the axial direction of the bearing to be tested. The test cavity is provided with positioning grooves on both sides of each positioning protrusion.

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