Slide rail bearing durability testing device

Abstract

The utility model relates to a slide rail bearing durability testing device, which comprises a slide rail support, a lead screw transmission mechanism and a bearing platform, the slide rail support comprises a base and a slide rail, the lead screw transmission mechanism comprises a lead screw support, a lead screw, a transmission seat and a motor, the lead screw support is fixed in the middle of the slide rail support, and two ends of the lead screw are rotatably positioned on lead screw seats at two ends of the lead screw support. The bearing platform comprises a supporting platen and sliding seats fixed to the two sides of the supporting platen, the supporting platen is connected with the transmission seats, and the sliding seats are in sliding fit with the sliding rails on the corresponding sides. The two sides of the bottom of the sliding seat are provided with shaft seats used for connecting a bearing to be tested, the bearing to be tested is in rolling fit with the inner bottom face of the sliding rail, and the bearing to be tested is not in contact with the inner side face of the sliding rail. The multi-bearing cooperative working state in the slide rail system is simulated, so that the test of real durability performance is facilitated, and the result is relatively accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing and is a durability testing device for slide rail bearings. Background Technology

[0002] Bearings are crucial components in modern machinery, primarily functioning to support rotating parts, reduce friction during operation, and ensure rotational accuracy. After manufacturing, bearings often require performance parameter testing to determine their suitability for use. Bearing durability testing is a critical step in determining whether a bearing meets its expected service life. Existing bearing durability testing devices, such as the invention described in Chinese patent application publication number CN118936882A (published November 12, 2024), entitled "A Bearing Durability Testing Machine," employ a method where the bearing under test is positioned within a bearing positioning seat. As the bearing rotates, a force loading module applies a load, and a data acquisition module collects data on temperature, vibration frequency, and rotational speed. Based on this information, the bearing's durability is evaluated. While this testing machine can perform durability tests on bearings, its testing primarily focuses on individual bearings, and the simulated loads are relatively limited. In many mechanical transmission applications, such as slide rail bearings, multiple bearings often work in tandem. Therefore, applying loads to only a single bearing for durability testing is insufficient to reflect its durability under actual operating conditions. Thus, it is necessary to design a durability testing device tailored to the actual operating conditions of bearings to ensure the accuracy of the final durability test results. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this utility model is to provide a slide rail bearing durability testing device, thereby solving the technical problem that existing similar bearing durability testing devices only test single bearings, making it difficult to simulate real-world operating conditions and unsuitable for multi-bearing durability testing of slide rail systems. This objective is achieved through the following technical solution.

[0004] A durability testing device for slide rail bearings includes a slide rail bracket, a lead screw transmission mechanism, and a support platform. The key structural features are: the slide rail bracket includes a base and parallel slide rails fixed to both sides of the base; the lead screw transmission mechanism includes a lead screw bracket, a lead screw, a transmission seat, and a motor; the lead screw bracket is fixed to the middle of the slide rail bracket; the lead screw is parallel to the slide rails, and both ends of the lead screw are rotatably positioned at lead screw seats at both ends of the lead screw bracket; one end of the lead screw extends out of the lead screw seat and drives the motor; the motor is fixed to the lead screw bracket; the transmission seat is threadedly engaged with the lead screw; the support platform includes a support plate and sliding seats fixed to both sides of the support plate; the support plate is connected to the transmission seat; the sliding seats form a sliding fit with the corresponding side of the slide rail; and the bottom sides of the sliding seats are provided with bearing seats for connecting the bearing to be tested; when the bearing to be tested is connected to the bottom sides of the sliding seats, the bearing to be tested forms a rolling fit with the inner bottom surface of the slide rail, and there is no contact between the bearing to be tested and the inner surface of the slide rail. The above structure effectively simulates the collaborative operation of multiple bearings in a slide rail system. The lead screw drives the sliding seat to reciprocate, and the sliding seat drives the bearing under test to perform a rolling test. After the test is completed, the bearing under test is removed for wear detection, thereby obtaining the true durability performance of the bearing in the slide rail system. The results are relatively accurate and reliable.

[0005] The sliding seat includes a base plate, a middle vertical plate, and a top plate. The top plate is horizontally parallel to the base plate, and the middle vertical plate is perpendicular to both the top and bottom plates. Bolt holes are provided at the top and bottom of the middle vertical plate. The top and bottom plates each have corresponding strip-shaped sliding holes. These sliding holes are connected to the bolt holes by bolts. The bolt adjustment direction of the strip-shaped sliding holes is perpendicular to the horizontal sliding direction of the sliding seat. The top plate is fixed to the support platform by screws. This structure facilitates the installation and adjustment of the sliding seat, allowing for more accurate installation into the slide rail, reducing abnormal contact wear with the slide rail, and thus ensuring the accuracy of the test.

[0006] After the support plate is connected to the transmission seat, it does not bear any load on the transmission seat; that is, the support plate is only supported by the sliding seats on both sides. This structure ensures that all the load on the support plate is transferred to the sliding seats on both sides, thereby accurately determining the force on the bearing under test and guaranteeing accurate test results.

[0007] The support plate and the transmission seat are connected by vertical bolts. When the bolts are locked and fixed to the transmission seat, the support plate slides vertically relative to the bolts. This structure is one embodiment in which the support plate does not bear any load on the transmission seat.

[0008] The transmission seat has a notch that mates with the support plate, and the support plate and the notch are in a vertical sliding fit. This structure serves as another implementation where the support plate does not bear any load on the transmission seat.

[0009] The sliding seat has rollers on its side that roll in contact with the inner sides of the slide rail. This structure further reduces friction between the side of the sliding seat and the slide rail, thereby ensuring the reliability of the sliding seat and improving the accuracy of bearing durability testing.

[0010] The outer ring of the bearing under test is fitted with a plastic or rubber sleeve. This structure ensures reliable relative rotation between the bearing and the slide rail.

[0011] This utility model has a relatively simple overall structure, is easy to manufacture and use, and simulates a real slide rail system to achieve bearing durability testing. The test results are relatively accurate and reliable, making it suitable as a bearing durability testing device for slide rail systems, or as a structural improvement of similar testing devices. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 yes Figure 1 A schematic diagram of the first scheme for connecting the transmission seat and the support plate.

[0014] Figure 3 This is a schematic diagram of Scheme 2, showing the connection between the transmission seat and the support plate in Figure 1.

[0015] Figure 4 yes Figure 1 A schematic diagram of the structure of the sliding seat connecting the bearing under test.

[0016] Figure 5 This is a schematic diagram of the implementation state of this utility model.

[0017] The numbers and names in the diagram are as follows: 1. Base, 2. Slide rail, 3. Screw support, 301. Screw seat, 4. Screw, 5. Transmission seat, 501. Notch, 6. Motor, 7. Coupling, 8. Support plate, 9. Sliding seat, 901. Top plate, 902. Middle vertical plate, 903. Base plate, 10. Bolt, 11. Bearing to be tested, 12. Roller, 13. Counterweight. Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 4As shown, the slide rail bearing durability testing device includes a slide rail bracket, a screw drive mechanism, and a bearing platform. The slide rail bracket includes a base 1 and slide rails 2 that are fixed to both sides of the base and are parallel to each other. The screw drive mechanism includes a screw bracket 3, a screw 4, a transmission seat 5, and a motor 6. The screw bracket is fixed in the middle of the slide rail bracket. The screw is parallel to the slide rail, and both ends of the screw are rotatably positioned at the screw seats 301 at both ends of the screw bracket. One end of the screw extends out of the screw seat and is connected to the motor through a coupling. The motor is fixed to the screw bracket, and the transmission seat is threadedly engaged with the screw. The support platform includes a support plate 8 and sliding seats 9 fixed to both sides of the support plate. The support plate is connected to a transmission seat, and the sliding seats form a sliding fit with the corresponding slide rails. The sliding seats include a base plate 903, a middle vertical plate 902, and a top plate 901. The top plate and the base plate are horizontally parallel, and the middle vertical plate is perpendicular to the top and bottom plates. Bolt holes are provided at the top and bottom of the middle vertical plate. The top plate and the base plate are provided with strip-shaped sliding holes corresponding to the bolt holes of the middle vertical plate. The strip-shaped sliding holes are connected to the bolt holes by bolts. The bolt adjustment direction of the strip-shaped sliding holes is perpendicular to the horizontal sliding direction of the sliding seat. The top plate and the support plate are locked together by screws. Both sides of the base plate are provided with bearing seats for connecting the bearing to be tested 11. When the bearing seat is connected to the bearing to be tested, the bearing to be tested forms a rolling fit with the inner bottom surface of the slide rail, and there is no contact between the bearing to be tested and the inner surface of the slide rail. To prevent the side of the bearing under test or the base plate from contacting the inner side of the slide rail, rollers 12 that roll in contact with the inner side of the slide rail can also be provided on both sides of the base plate. To ensure reliable contact and rotation between the bearing under test and the rail, a plastic or rubber sleeve is fitted around the outer ring of the bearing under test to ensure the reliability of the rotation test.

[0020] After the aforementioned support plate 8 is connected to the transmission seat 5, it does not bear any load on the transmission seat; that is, the support plate is only supported by the sliding seats 9 on both sides. Figure 2 The diagram shows the structure of Scheme 1. The support platform and the transmission seat are connected by vertical bolts 10. When the bolts are locked and fixed to the transmission seat, the support platform slides vertically relative to the bolts. Figure 3 The diagram shows the structure of Scheme 2. The transmission seat has a notch 501 that mates with the support plate, and the support plate and the notch are in a vertical sliding fit.

[0021] like Figure 5As shown, the testing method of the slide rail bearing durability testing device is as follows: First, the bearing to be tested 11 is connected to the shaft seat on the side of the slide seat 9. After the bearing to be tested is connected to the shaft seat, the bearing to be tested is reliably limited by the limiting end connected to the end of the shaft seat. Then, the middle vertical plate 902 and the bottom plate 903 of the slide seat 9 are assembled. The middle vertical plate and the bottom plate are assembled with bolts, ensuring that they can slide smoothly into the slide rail after assembly. Then, the two ends of the support platform are pre-fixed to the top plate 901 of the slide seat with bolts. After connection, the top plate and the top of the middle vertical plate are locked together with bolts. Next, the support platform 8 is assembled and connected to the transmission seat 5. After connection, the transmission seat does not support the support platform. Then, the support platform and the top plate of the slide seat are completely fixed to ensure that the slide seat slides smoothly relative to the slide rail. Finally, according to the load requirements, the corresponding load counterweight 13 is placed on the support plate, and the motor 6 is turned on. The motor drives the lead screw 4 to alternately rotate forward and backward according to the set stroke. The lead screw drives the transmission seat to form a reciprocating motion, and the transmission seat drives the support plate and the sliding seat to form a reciprocating motion relative to the slide rail, thereby realizing the durability performance test of the bearing under test. After the test is completed, the bearing under test is removed and the corresponding fatigue wear parameters are measured to obtain the durability test results.

[0022] The above description is intended to illustrate the technical means of this utility model and is not intended to limit the technical scope of this utility model. Any obvious improvements or substitutions made to this utility model by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of this utility model.

Claims

1. A slide rail bearing endurance test device, the test device comprising a slide rail support, a screw drive mechanism, a load bearing platform, characterized in that The slide rail support includes a base (1) and slide rails (2) fixed on both sides of the base in parallel, the screw rod transmission mechanism includes a screw rod support (3), a screw rod (4), a transmission seat (5) and a motor (6), the screw rod support is fixed in the middle of the slide rail support, the screw rod is parallel to the slide rail, and both ends of the screw rod are rotatably positioned in screw rod seats (301) at both ends of the screw rod support, one end of the screw rod extends out of the screw rod seat to drive the motor, the motor is fixed on the screw rod support, the transmission seat is in threaded cooperation with the screw rod, the bearing platform includes a support table (8), slide seats (9) fixed on both sides of the support table, the support table is connected with the transmission seat, the slide seat is in sliding cooperation with the slide rail on the corresponding side, and the bottom of the slide seat is provided with shaft seats for connecting the bearings (11) to be tested; when the slide seat is connected with the bearings to be tested at the bottom, the bearings to be tested are in rolling cooperation with the inner bottom surface of the slide rail, and there is no contact between the bearings to be tested and the inner side surface of the slide rail.

2. The slide rail bearing endurance test device according to claim 1, wherein The slide seat (9) includes a bottom plate (903), an intermediate vertical plate (902) and a top plate (901), the top plate is horizontally parallel to the bottom plate, the intermediate vertical plate is perpendicular to the top plate and the bottom plate, the top and bottom of the intermediate vertical plate are provided with bolt holes, the top plate and the bottom plate are provided with strip-shaped slide holes corresponding to the bolt holes of the intermediate vertical plate, the strip-shaped slide holes are connected with the bolt holes through bolts, the bolt adjustment direction of the strip-shaped slide hole is perpendicular to the horizontal sliding direction of the slide seat, and the top plate is fixed through screw locking with the support table.

3. The slide rail bearing endurance test device according to claim 1, wherein After the support table (8) is connected with the transmission seat (5), the transmission seat is not subjected to bearing pressure, that is, the support table is only supported and stressed by the slide seats on both sides.

4. The slide rail bearing endurance test apparatus according to claim 3, wherein The support table (8) and the transmission seat (5) are connected through a vertical bolt (10), when the bolt is locked and fixed with the transmission seat, the support table is in vertical sliding cooperation with the bolt.

5. The slide rail bearing endurance test apparatus according to claim 3 or 4, characterized by The transmission seat (5) is provided with a notch (501) matched with the support table (8), and the support table is in vertical sliding cooperation with the notch.

6. The slide rail bearing endurance test device according to claim 1, wherein The side surface of the slide seat (9) is provided with rollers (12) in rolling cooperation with both sides in the slide rail (2).

7. The slide rail bearing endurance test device according to claim 1, wherein The outer ring of the bearing (11) to be tested is sleeved with a plastic sleeve or a rubber sleeve.

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