Bearing performance detection device

Abstract

The utility model discloses a bearing performance detection device. The bearing performance detection device comprises a casing, a self-adaptive transmission assembly and a sliding type bearing assembly. The self-adaptive transmission assembly comprises a transmission shaft, the transmission shaft is rotationally assembled in the machine shell, a plurality of evenly-distributed shrinkage control boxes are fixedly assembled on the outer side of the transmission shaft, ejection blocks are assembled in the multiple shrinkage control boxes in a sliding mode, a conduction air channel is formed in the transmission shaft, and connecting air pipes are communicated between the multiple shrinkage control boxes and the conduction air channel. The sliding type supporting assembly comprises a supporting bearing, the supporting bearing is arranged on the outer side of the transmission shaft in a sleeving mode, and a conduction limiting block is fixedly assembled on the side, away from the contraction control box, of the supporting bearing. According to the bearing performance detection device disclosed by the utility model, through the arrangement of a corresponding structure, the process of assembling and disassembling the bearing to be detected is simplified, the bearings to be detected with different inner diameters can be assembled, and the detection convenience and the application range of the radial sliding bearing performance detection device are improved.

Description

Technical Field

[0001] This utility model belongs to the field of radial sliding bearing performance testing technology, and specifically relates to a bearing performance testing device. Background Technology

[0002] Bearings are components used to support rotating mechanical bodies and reduce their coefficient of friction. Based on their structure, they can be classified into several types: sliding bearings, rolling bearings, spherical plain bearings, and thrust ball bearings. Among them, radial sliding bearings are sliding bearings that bear radial loads. Due to their advantages of high load-bearing capacity, smooth operation, good vibration resistance, and long service life, common radial sliding bearings mainly consist of a bearing housing, bearing shell, oil hole, and oil groove. In actual use, lubricating oil is injected between the bearing housing and bearing shell through the oil hole, thereby reducing friction caused by the relative movement between the bearing housing and bearing shell. They are widely used in automobiles, wind power generation, and machinery manufacturing. During the production and processing of radial sliding bearings, performance tests are required on load capacity, wear resistance, fatigue resistance, vibration resistance, lubrication, and temperature.

[0003] A radial sliding bearing performance testing device is a type of equipment used for testing the performance of radial sliding bearings. Chinese utility model patent CN216483945U discloses a bearing performance testing device, which includes a gearbox housing with a drive shaft inside. The bearing to be tested is mounted on the middle of the drive shaft, and a bearing housing is provided outside the bearing, with a loading device abutting against it. The loading device can move radially along the drive shaft. A data acquisition device is located next to the bearing. Using this utility model, a dedicated testing device is set up. The bearing to be tested is mounted inside the housing via the drive shaft, and a bearing housing is provided outside the bearing, with the loading device abutting against it. Since the loading device can move radially along the drive shaft, it can simulate the radial force on the bearing. The data acquisition device next to the bearing monitors the state of the bearing and returns corresponding data, thus obtaining the specific state values ​​of the bearing under different loading forces. Analyzing the obtained data facilitates the improvement design of the bearing.

[0004] As can be seen from the specification and accompanying drawings, in the bearing performance testing device disclosed in this application, the drive shaft is rotatably assembled inside the housing, while the bearing to be tested needs to be fitted on the outside of the drive shaft. This makes it difficult to disassemble and assemble the bearing to be tested. At the same time, it cannot be adapted to the assembly of bearings with different inner diameters, which makes the testing convenience and applicability of the radial sliding bearing performance testing device poor.

[0005] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a bearing performance testing device.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a bearing performance testing device that improves the convenience and applicability of radial sliding bearing performance testing devices.

[0008] To achieve the above objectives, a specific embodiment of this utility model provides a bearing performance testing device, comprising: a housing, an adaptive transmission assembly, and a sliding support assembly.

[0009] The adaptive transmission assembly is assembled inside the housing. The adaptive transmission assembly includes a transmission shaft, which is rotatably assembled inside the housing. Multiple evenly distributed contraction control boxes are fixedly assembled on the outside of the transmission shaft. A top block is slidably assembled inside each of the multiple contraction control boxes. A guiding air passage is opened inside the transmission shaft. A connecting air pipe is connected between each of the multiple contraction control boxes and the guiding air passage.

[0010] The sliding support assembly is mounted on one end of the drive shaft. The sliding support assembly includes a support bearing, which is fitted on the outside of the drive shaft. A guide limit block is fixedly mounted on the side of the support bearing away from the shrinkage control box.

[0011] In one or more embodiments of this utility model, the outer side of the transmission shaft is fitted with a bearing to be tested.

[0012] In one or more embodiments of this utility model, a control air chamber is formed between the top block and the contraction control box. This facilitates driving and controlling the top block by supplying gas into the control air chamber, thereby facilitating the assembly and positioning of bearings of different diameters by having multiple top blocks contact the inner wall of the bearing under test. The two ends of the connecting air pipe are respectively connected to the control air chamber and the guiding air channel. The connecting air pipe connects and connects the control air chamber and the guiding air channel.

[0013] In one or more embodiments of this utility model, a plurality of evenly distributed contraction springs are arranged in the control air chamber. The contraction springs serve to connect the top block and the contraction control box, facilitating the connection and limiting of the top block through the contraction and reset of the contraction springs. A connecting air nozzle is threaded onto one end of the drive shaft close to the bearing, and the connecting air nozzle communicates with the guiding air passage. Control gas is delivered into the guiding air passage through the connecting air nozzle.

[0014] In one or more embodiments of this utility model, a support platform is fixedly assembled inside the housing. The support platform serves to assemble and fix the positioning plate and the guide rail. A positioning plate is fixedly assembled on the support platform, and the positioning plate is arranged below the bearing to be tested. The positioning plate limits the positioning pin, thereby facilitating the support and positioning of the bearing to be tested.

[0015] In one or more embodiments of this utility model, the positioning plate has a plurality of evenly distributed assembly pin holes. The positioning pins are adjusted in position by engaging with the assembly pin holes. Each of the plurality of assembly pin holes contains a positioning pin, which is configured to cooperate with the bearing to be tested. The bearing to be tested is positioned and assembled using the positioning pins.

[0016] In one or more embodiments of this utility model, an intake piston cylinder is fixedly assembled inside the conductive limiting block, and one end of the intake piston cylinder close to the drive shaft is sleeved on the outside of the connecting air nozzle. Compressed gas is delivered to the connecting air nozzle through the intake piston cylinder, thereby facilitating the ejection control of multiple top blocks.

[0017] In one or more embodiments of this utility model, a fixing frame is fitted around the outer side of the conduction limiting block. The fixing frame supports, fixes, and controls the movement of the conduction limiting block. A linear slider is fixedly mounted below the fixing frame. The linear slider supports, positions, and guides the sliding movement of the fixing frame. A guide rail is slidably mounted below the linear slider, and the guide rail is fixedly mounted above the support platform. The guide rail limits the assembly of the linear slider.

[0018] In one or more embodiments of this utility model, a pair of locking bolts are threadedly connected to the top of the linear slider, and one end of the pair of locking bolts located inside the linear slider contacts the guide rail. The linear slider is locked and fixed by controlling the operation of the pair of locking bolts.

[0019] In one or more embodiments of this utility model, a compression piston is slidably mounted inside the intake piston cylinder. By controlling the movement of the compression piston, the gas inside the intake piston cylinder is compressed and transported, thereby facilitating the delivery of driving gas into the contraction control box. A threaded piston rod is rotatably connected to the side of the compression piston away from the connecting nozzle, and a drive end is fixedly connected to one end of the threaded piston rod located outside the intake piston cylinder. By controlling the rotation of the drive end, the threaded piston rod is moved, thereby facilitating the compression movement control of the compression piston.

[0020] Compared with the prior art, the bearing performance testing device disclosed in this utility model simplifies the assembly and disassembly process of the bearing to be tested through the corresponding structural design. At the same time, it can assemble bearings to be tested with different inner diameters, thereby improving the testing convenience and applicability of the radial sliding bearing performance testing device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front sectional view of a bearing performance testing device according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure at point B;

[0025] Figure 4 This is a schematic diagram of a portion of the mechanism of a bearing performance testing device according to one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of a portion of the mechanism of a bearing performance testing device according to one embodiment of the present invention from another angle;

[0027] Figure 6 for Figure 5 Schematic diagram of the structure at point C;

[0028] Figure 7 This is a perspective view of a bearing performance testing device according to an embodiment of the present invention.

[0029] Explanation of key figure labels:

[0030] 1-Housing, 2-Adaptive transmission assembly, 201-Drive shaft, 202-Retraction control box, 203-Top block, 204-Air passage, 205-Connecting air pipe, 206-Bearing to be tested, 207-Retraction spring, 208-Connecting nozzle, 209-Bearing platform, 210-Positioning plate, 211-Positioning pin, 3-Sliding support assembly, 301-Support bearing, 302-Air passage limit block, 303-Inlet piston cylinder, 304-Fixed bracket, 305-Linear slider, 306-Guide slide rail, 307-Locking bolt, 308-Compression piston, 309-Threaded piston rod, 310-Drive end. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0032] like Figures 1 to 7 As shown, a bearing performance testing device in one embodiment of the present invention includes: a housing 1, an adaptive transmission assembly 2, and a sliding support assembly 3.

[0033] like Figures 4 to 6 As shown, the adaptive transmission assembly 2 is assembled inside the housing 1. The adaptive transmission assembly 2 includes a transmission shaft 201, which is rotatably mounted inside the housing 1. The transmission shaft 201 serves as a transmission limit for the bearing 206 under test, facilitating subsequent performance testing of the bearing 206 under test.

[0034] like Figures 4 to 5 As shown, the bearing 206 to be tested is mounted on the outer side of the drive shaft 201.

[0035] like Figures 6 to 7 As shown, the bearing under test 206 consists of a bearing housing, a bearing bush, and an oil injection nozzle.

[0036] like Figure 1 As shown, a support platform 209 is fixedly assembled inside the housing 1. The support platform 209 serves to assemble and fix the positioning plate 210 and the guide rail 306.

[0037] like Figures 4 to 6 As shown, a positioning plate 210 is fixedly mounted on the bearing platform 209, and the positioning plate 210 is arranged below the bearing 206 to be tested. The positioning plate 210 limits the assembly of the positioning pin 211, thereby facilitating the support and positioning of the bearing 206 to be tested.

[0038] Specifically, the positioning plate 210 has multiple evenly distributed assembly pin holes. The positioning pins 211 are adjusted in position by engaging with the assembly pin holes.

[0039] like Figures 4 to 6 As shown, locating pins 211 are inserted into multiple assembly pin holes, and the locating pins 211 are configured to cooperate with the bearing 206 under test. The locating pins 211 are used to assemble and position the bearing 206 under test.

[0040] like Figures 1 to 3As shown, multiple evenly distributed retraction control boxes 202 are fixedly mounted on the outer side of the drive shaft 201. The retraction control boxes 202 serve to limit the retraction and control the movement of the top block 203.

[0041] like Figures 1 to 3 As shown, each of the multiple shrinkage control boxes 202 has a top block 203 slidably mounted inside. This allows the drive shaft 201 to perform assembly and positioning of bearings 206 with different inner diameters by ejecting the multiple top blocks 203.

[0042] Specifically, a control air chamber is formed between the top block 203 and the shrinkage control box 202. This facilitates the driving control of the top block 203 by supplying gas into the control air chamber, thereby facilitating the assembly and positioning of bearings 206 of different diameters by having multiple top blocks 203 contacting the inner wall of the bearing 206 under test.

[0043] like Figures 1 to 3 As shown, multiple evenly distributed contraction springs 207 are arranged inside the control air chamber. The contraction springs 207 serve to connect the top block 203 and the contraction control box 202, facilitating the connection and limitation of the top block 203 through the contraction and reset of the contraction springs 207.

[0044] like Figures 1 to 3 As shown, a guiding air passage 204 is provided inside the drive shaft 201. Compressed gas is delivered to multiple connecting air pipes 205 through the guiding air passage 204.

[0045] like Figures 1 to 3 As shown, each of the multiple contraction control boxes 202 is connected to the airway 204 by a connecting air tube 205. The connecting air tube 205 serves to connect the control air chamber and the airway 204.

[0046] Specifically, the two ends of the connecting tube 205 are connected to the control air chamber and the guiding airway 204, respectively. The connecting tube 205 connects and guides the control air chamber and the guiding airway 204.

[0047] like Figures 1 to 2 As shown, a connecting nozzle 208 is threaded onto one end of the drive shaft 201 close to the support bearing 301, and the connecting nozzle 208 is connected to the guiding air passage 204. Control gas is delivered into the guiding air passage 204 through the connecting nozzle 208.

[0048] like Figures 4 to 6 As shown, the sliding support assembly 3 is assembled at one end of the drive shaft 201. The sliding support assembly 3 includes a support bearing 301, which is fitted onto the outside of the drive shaft 201. The support bearing 301 supports and limits the movement of the drive shaft 201.

[0049] like Figures 4 to 6As shown, a guide limit block 302 is fixedly mounted on the side of the support bearing 301 away from the contraction control box 202. This facilitates synchronous drive control of the intake piston cylinder 303 by controlling the movement of the guide limit block 302.

[0050] like Figures 4 to 5 As shown, an intake piston cylinder 303 is fixedly installed inside the guide limit block 302. One end of the intake piston cylinder 303, close to the drive shaft 201, is sleeved on the outside of the connecting nozzle 208. Compressed gas is delivered into the connecting nozzle 208 through the intake piston cylinder 303, thereby facilitating the ejection control of multiple top blocks 203.

[0051] like Figures 1 to 2 As shown, a compression piston 308 is slidably mounted inside the intake piston cylinder 303. By controlling the movement of the compression piston, the gas inside the intake piston cylinder is compressed and transported, thereby facilitating the delivery of driving gas to the contraction control box.

[0052] like Figures 1 to 2 As shown, a threaded piston rod 309 is rotatably connected to the side of the compression piston 308 away from the connecting nozzle 208. A drive end 310 is fixedly connected to one end of the threaded piston rod 309 outside the intake piston cylinder 303. By controlling the rotation of the drive end 310, the threaded piston rod 309 is driven to move, thereby facilitating the compression movement control of the compression piston 308.

[0053] like Figures 4 to 6 As shown, a fixing bracket 304 is fitted on the outer side of the conduction limiting block 302. The fixing bracket 304 serves to support, fix, and control the movement of the conduction limiting block 302.

[0054] like Figures 4 to 6 As shown, a linear slider 305 is fixedly mounted on the lower part of the fixing frame 304. The linear slider 305 serves to support, position, and guide the sliding movement of the fixing frame 304.

[0055] like Figures 1 to 6 As shown, a guide rail 306 is slidably mounted below the linear slider 305, and the guide rail 306 is fixedly mounted above the support platform 209. The guide rail 306 limits the assembly position of the linear slider 305.

[0056] like Figures 1 to 6 As shown, a pair of locking bolts 307 are threadedly connected to the top of the linear slider 305. One end of the pair of locking bolts 307 located inside the linear slider 305 contacts the guide rail 306. The linear slider 305 is locked and fixed by controlling the operation of the pair of locking bolts 307.

[0057] In practical use, when it is necessary to perform performance testing on the bearing 206 to be tested, the locking state of the linear slider 305 is released by controlling the operation of the locking bolt 307. Then, the bearing 301 to be supported and the guide limit block 302 are offset as a whole by sliding the linear slider 305 on the guide rail 306, thereby exposing one end of the drive shaft 201. Then, the bearing 206 to be tested can be fitted on the outside of the drive shaft 201.

[0058] After the bearing under test 206 is assembled, the support bearing 301 can be re-assembled on the outside of the drive shaft 201 by sliding. Furthermore, the compression piston 308 can be driven to move within the intake piston cylinder 303 by controlling the drive end 310 to move the threaded piston rod 309. This causes the intake piston cylinder 303 to deliver compressed gas into the connecting nozzle 208 and the guiding air passage 204. The compressed gas is then transported along the connecting air pipe 205 to the contraction control box 202, causing multiple top blocks 203 to be ejected. This allows the multiple top blocks 203 to assemble and position the bearing under test 206, after which performance testing of the bearing under test 206 can be performed.

[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bearing performance testing device, characterized in that, include: chassis; An adaptive transmission assembly is assembled inside the housing. The adaptive transmission assembly includes a transmission shaft rotatably mounted inside the housing. Multiple evenly distributed contraction control boxes are fixedly mounted on the outer side of the transmission shaft. A top block is slidably mounted inside each of the contraction control boxes. A guiding air passage is provided inside the transmission shaft. A connecting air pipe connects the multiple contraction control boxes to the guiding air passage. A control air chamber is formed by the cooperation between the top block and the contraction control box. Both ends of the connecting air pipe are connected to the control air chamber and the guiding air passage, respectively. Multiple evenly distributed contraction springs are arranged inside the control air chamber. A connecting air nozzle is threaded onto one end of the transmission shaft close to the bearing support. The connecting air nozzle communicates with the guiding air passage. A support platform is fixedly mounted inside the housing. A positioning plate is fixedly mounted on the support platform. The positioning plate is positioned below the bearing to be tested. Multiple evenly distributed mounting pin holes are provided on the positioning plate. Positioning pins are inserted into each of the mounting pin holes and are configured to cooperate with the bearing to be tested. A sliding support assembly is assembled at one end of the drive shaft. The sliding support assembly includes a support bearing, which is fitted on the outside of the drive shaft. A guide limit block is fixedly assembled on the side of the support bearing away from the shrink control box.

2. The bearing performance testing device according to claim 1, characterized in that, The bearing to be tested is fitted on the outer side of the drive shaft.

3. The bearing performance testing device according to claim 2, characterized in that, An intake piston cylinder is fixedly assembled inside the conduction limiting block, and one end of the intake piston cylinder close to the drive shaft is sleeved on the outside of the connecting air nozzle.

4. The bearing performance testing device according to claim 3, characterized in that, A fixing frame is fitted on the outer side of the conduction limiting block, a linear slider is fixedly mounted below the fixing frame, a guide rail is slidably mounted below the linear slider, and the guide rail is fixedly mounted above the support platform.

5. The bearing performance testing device according to claim 4, characterized in that, A pair of locking bolts are threaded onto the upper part of the linear slider, and one end of the pair of locking bolts inside the linear slider contacts the guide rail.

6. The bearing performance testing device according to claim 5, characterized in that, A compression piston is slidably assembled inside the intake piston cylinder. A threaded piston rod is rotatably connected to the side of the compression piston away from the connecting air nozzle. A drive end is fixedly connected to one end of the threaded piston rod located outside the intake piston cylinder.

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