Swing wear test device for knuckle bearing in high-temperature salt spray environment
By designing a joint bearing swing wear test device under high-temperature salt spray environment, the wear problem of joint bearings in the high-temperature salt spray environment cannot be tested in the prior art, and the accurate evaluation of joint bearing performance is achieved.
Patent Information
- Application Number
- CN202510727170.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2025-07-22
AI Technical Summary
The prior art lacks wear testing devices for joint bearings in high-temperature salt spray environments, and cannot effectively test the performance of joint bearings under complex working conditions.
A joint bearing swing wear test device in high-temperature salt spray environment is designed, including a fixing mechanism, a power mechanism and an environmental simulation mechanism. The high-temperature salt spray environment is simulated through the salt spray assembly and the heating assembly, and the power assembly provides rotational torque to achieve wear test of joint bearings.
It can accurately test the wear changes of joint bearings in high-temperature salt spray environments, provide rotational torque, simulate actual working conditions, and evaluate the performance of joint bearings.
Smart Images
Figure CN120352285A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of bearing testing, and particularly relates to a swing wear test device for a spherical plain bearing in a high-temperature salt spray environment. Background Art
[0002] A spherical plain bearing is a bearing that can withstand large loads and move flexibly. Due to its advantages such as compact structure, strong self-aligning ability, and good adaptability to impact loads, it is widely used in key parts in the fields of aerospace, mechanical engineering, wind power equipment, etc.
[0003] Spherical plain bearings are mostly in working conditions such as complex loads, high-temperature salt spray, and vacuum environments. Under heavy load wear, the coating of the spherical plain bearing will gradually wear out, resulting in the failure of the structure of the spherical plain bearing.
[0004] Currently, testing the service performance of spherical plain bearings through a test bench is one of the important methods. Multiple wear test benches for spherical plain bearings are provided in the related art. Although the performance of spherical plain bearings is evaluated from different angles, the relevant testing capabilities in a high-temperature salt spray environment are lacking.
[0005] Therefore, there is an urgent need for a swing wear test device for a spherical plain bearing in a high-temperature salt spray environment to solve the above technical problems. Summary of the Invention
[0006] The purpose of the present invention is to provide a swing wear test device for a spherical plain bearing in a high-temperature salt spray environment, which can test the spherical plain bearing in a high-temperature salt spray environment.
[0007] To achieve this purpose, the present invention adopts the following technical solutions:
[0008] Provide a swing wear test device for a spherical plain bearing in a high-temperature salt spray environment, including:
[0009] A fixing mechanism, including a first bearing seat, the first bearing seat is used to fix the spherical plain bearing, and along the radial direction of the spherical plain bearing, the first bearing seat has a salt spray through hole;
[0010] A power mechanism, including a power assembly and a transmission shaft, the power assembly is connected to the transmission shaft to drive the transmission shaft to rotate, and the transmission shaft is used to extend into the inner ring of the spherical plain bearing and drive the spherical plain bearing to rotate;
[0011] An environment simulation mechanism, including a box body, a salt spray assembly and a heating assembly, the salt spray assembly and the heating assembly are located in the box body, the salt spray assembly is arranged towards the salt spray through hole so that salt spray enters the spherical plain bearing, and the heating assembly is used to increase the temperature in the box body.
[0012] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the salt spray assembly includes a driving pump and a salt spray nozzle. The inlet of the driving pump is connected to a salt spray source, the outlet of the driving pump is connected to the salt spray nozzle through a salt spray pipeline, and the salt spray nozzle sprays salt spray.
[0013] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the heating assembly includes a heating element and a heating support platform. The heating support platform is located within the area enclosed by the box body. The heating support platform is arranged at the bottom of the fixing mechanism, and the heating element is fixed to the heating support platform to provide heat for the heating support platform.
[0014] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the first bearing seat is provided with an installation hole for installing the spherical plain bearing. The fixing mechanism further includes a pressing member and a friction member. The pressing member and the friction member are arranged in the installation hole, and the pressing member is fixedly connected to the first bearing seat. Along the axial direction of the installation hole, both the pressing member and the friction member are located on both sides of the spherical plain bearing, and the friction member is arranged between the pressing member and the spherical plain bearing.
[0015] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the transmission shaft includes a first shaft, a second shaft and an elastic mounting sleeve. The first shaft and the second shaft are respectively fixedly connected to two first flange plates of the elastic mounting sleeve. The first end of the second shaft is connected to the power assembly. Second flange plates are arranged at one end of the first shaft facing the elastic mounting sleeve and the second end of the second shaft. The first flange plate is fixedly connected to the second flange plate. A tapered platform is arranged on one side of the second flange plate facing the first flange plate. The elastic mounting sleeve is provided with a tapered connection hole along the axial direction, and the tapered platform is located within the tapered connection hole. The volume of the tapered platform is larger than the volume of the tapered connection hole.
[0016] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the transmission shaft further includes a third shaft and a torque limiter. The torque limiter connects the second shaft and the third shaft, and the third shaft is connected to the power assembly.
[0017] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the swing wear test device for the spherical plain bearing under the high-temperature salt spray environment further includes a loading mechanism. The loading mechanism is located directly above the fixing mechanism. The loading mechanism includes a support frame, a pressure sensor, a first driving member, and a loading member. The first driving member is fixed to the top of the support frame. The pressure sensor is arranged between the first driving member and the loading member. The driving rod of the first driving member passes through the support frame and is fixedly connected to the loading member. The loading member is located within the area surrounded by the support frame and contacts the first bearing seat. The loading member is located within the box body.
[0018] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the loading mechanism further includes a cooling structure and a loading shaft. The first driving member is connected to the loading member through the loading shaft. The pressure sensor is located between the first driving member and the loading shaft. The cooling structure is sleeved on the outer periphery of the loading shaft.
[0019] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, the power assembly includes a motor and a connecting coupling. The output shaft of the motor is connected to the transmission shaft through the connecting coupling. The power mechanism further includes an absolute encoder and a torque sensor. The torque sensor is used to obtain the torque change value of the spherical plain bearing. The absolute encoder is used to obtain the swing angle of the spherical plain bearing.
[0020] As an alternative technical solution of the swing wear test device for the spherical plain bearing under the above high-temperature salt spray environment, it further includes a heat dissipation mechanism. The heat dissipation mechanism includes heat dissipation fins and a heat dissipation fan. The heat dissipation fins are attached to the transmission shaft. The heat dissipation fan is located on one side of the transmission shaft.
[0021] The present invention has at least the following beneficial effects:
[0022] The first bearing seat provides a fixed support for the spherical plain bearing, and the first bearing seat has salt spray through holes. The salt spray assembly of the environment simulation mechanism passes salt spray into the salt spray through holes, and the heating assembly heats the spherical plain bearing, so that the spherical plain bearing is in a high-temperature salt spray environment during the test. In addition, the power mechanism provides rotational power for the spherical plain bearing, and then provides a rotational force for the spherical plain bearing, so that the spherical plain bearing can be worn in a high-temperature salt spray environment, so as to obtain the wear change situation of the spherical plain bearing in a high-temperature salt spray environment. Description of the Drawings
[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present invention and these drawings.
[0024] Figure 1 Side view of the swing wear test device for a spherical plain bearing in a high-temperature salt spray environment provided by the embodiment of the present invention;
[0025] Figure 2 Schematic structural diagram (without support plate) of the swing wear test device for a spherical plain bearing in a high-temperature salt spray environment provided by the embodiment of the present invention;
[0026] Figure 3 For Figure 2 Partial enlarged view at A in
[0027] Figure 4 For Figure 2 Cross-sectional view of
[0028] Figure 5 For Figure 4 Partial enlarged view at B in
[0029] Figure 6 For Figure 5 Partial enlarged view at C in
[0030] Figure 7 Front view of the swing wear test device for a spherical plain bearing in a high-temperature salt spray environment provided by the embodiment of the present invention.
[0031] In the figure:
[0032] 1. Fixing mechanism; 11. First bearing seat; 111. Upper mounting seat; 112. Lower mounting seat;; 12. Compressing member; 13. Friction member;
[0033] 2. Power mechanism; 21. Transmission shaft; 211. First shaft; 212. Second shaft; 213. Elastic mounting sleeve; 214. First flange; 215. Second flange; 216. Tapered table; 217. Third shaft; 218. Torque limiter; 210. Aerostatic bearing; 22. Motor; 23. Connecting coupling; 24. Torque sensor; 25. Absolute encoder; 26. Encoder support;
[0034] 3. Environment simulation mechanism; 31. Box body; 311. Inner cover; 312. Outer cover; 313. Bottom plate; 314. Temperature sensor; 32. Driving pump; 33. Salt spray nozzle; 34. Salt spray pipeline; 35. Heating element; 36. Heating support platform; 37. Heat insulation platform;
[0035] 4. Loading mechanism; 41. Support frame; 42. First driving member; 43. Loading member; 44. Cooling structure; 45. Loading shaft; 46. Pressure sensor;
[0036] 5. Support plate;
[0037] 6. Cooling fan;
[0038] 100. Spherical plain bearing. Detailed implementation manner
[0039] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.
[0040] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the", and "on the" of the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" of the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.
[0042] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.
[0043] In view of the problem that the types of current joint bearing wear test devices are single and cannot meet the test requirements of joint bearings in a salt spray environment, the present invention provides a joint bearing oscillating wear test device in a high-temperature salt spray environment, which provides a high-temperature salt spray environment for joint bearings during the wear test process, enables joint bearings to be tested in a salt spray environment, and can obtain the wear change conditions of joint bearings in this environment.
[0044] As Figures 1 to 3 shown, the joint bearing oscillating wear test device in a high-temperature salt spray environment includes a fixing mechanism 1, a power mechanism 2, and an environment simulation mechanism 3. The fixing mechanism 1 includes a first bearing seat 11, which is used to fix the joint bearing 100. Along the radial direction of the joint bearing 100, the first bearing seat 11 has a salt spray through hole; the power mechanism 2 includes a power component and a transmission shaft 21. The power component is connected to the transmission shaft 21 to drive the transmission shaft 21 to rotate. The transmission shaft 21 is used to extend into the inner ring of the joint bearing 100 and drive the joint bearing 100 to rotate, thereby providing an active torque for the oscillation of the joint bearing 100; the environment simulation mechanism 3 includes a box body 31, a heating component, and a salt spray component. The salt spray component is located inside the box body 31, and the salt spray component is arranged towards the salt spray through hole so that salt spray enters the joint bearing 100, and the heating component is used to raise the temperature inside the box body 31.
[0045] The first bearing seat 11 provides a fixed support for the joint bearing 100, and the first bearing seat 11 has a salt spray through hole. The salt spray component of the environment simulation mechanism 3 passes salt spray into the salt spray through hole, and the heating component heats the joint bearing 100, so that the joint bearing 100 is in a high-temperature salt spray environment during the test. In addition, the power mechanism 2 provides rotational power for the joint bearing 100, thereby providing a rotational force for the joint bearing 100, and further enabling the joint bearing 100 to wear in a high-temperature salt spray environment, so as to obtain the wear change conditions of the joint bearing 100 in a high-temperature salt spray environment.
[0046] In some embodiments, in combination with Figure 4 and Figure 5As shown in the figure, the box body 31 includes an inner cover 311, an outer cover 312 and a bottom plate 313. Along the vertical direction, the inner cover 311 and the outer cover 312 are coaxially arranged, and both the inner cover 311 and the outer cover 312 are fixed on the bottom plate 313, specifically by welding. Both the inner cover 311 and the outer cover 312 have through holes for the transmission shaft 21 to pass through. The inner cover 311 can be a split structure, and the outer cover 312 can be a split structure. The inner cover 311 and the outer cover 312 are sealed by a sealing structure. Specifically, the sealing structure includes a sealing ring, and a accommodating space is formed between the inner cover 311 and the outer cover 312. The accommodating space is filled with heat-insulating material to ensure the constant temperature inside the box body 31. For example, heat-insulating materials are mainly divided into organic heat-insulating materials, inorganic heat-insulating materials and composite heat-insulating materials. Organic heat-insulating materials such as EPS, XPS, etc. have the characteristics of good heat insulation effect and low production cost; inorganic heat-insulating materials such as rock wool, glass wool, etc. have good fire resistance; composite heat-insulating materials combine the advantages of organic and inorganic materials, have flame retardancy and less smoke during combustion.
[0047] As Figure 7 shown in the figure, a temperature sensor 314 is also arranged inside the box body 31. Specifically, the first bearing seat 11 is provided with a temperature detection hole 114 for the probe of the temperature sensor 314 to pass through. The temperature sensor 314 is a thermocouple, and the thermocouple is located in the temperature detection hole 114 and can contact the spherical plain bearing 100 to detect the ambient temperature of the spherical plain bearing 100. The box body 31 provides a sealed test environment for the spherical plain bearing 100 to be tested and can obtain the temperature change of the spherical plain bearing 100 during the test.
[0048] In some embodiments, as Figure 2 shown in the figure, the salt spray assembly includes a driving pump 32 and a salt spray nozzle 33. The inlet of the driving pump 32 is connected to a salt spray source. For example, the salt spray source is seawater. The outlet of the driving pump 32 is connected to the salt spray nozzle 33 through a salt spray pipe 34. The salt spray nozzle 33 sprays salt spray, and the salt spray acts on the spherical plain bearing 100 through the salt spray through holes, thereby providing a salt spray environment for the spherical plain bearing 100.
[0049] The first bearing seat 11 is provided with two salt spray through holes, and the two salt spray through holes are located on both sides of the spherical plain bearing 100, so as to facilitate the spraying of salt spray. The driving pump 32 is a peristaltic pump, the number of driving pumps 32 is two, and the number of salt spray nozzles 33 is also two. Each driving pump 32 is connected to a salt spray nozzle 33.
[0050] In addition, in order to achieve a high-temperature salt spray environment, combining Figure 2 and Figure 5As shown, the environment simulation mechanism 3 further includes a heating assembly. The heating assembly includes a heating element 35 and a heating support platform 36. The heating support platform 36 is located within the area enclosed by the box body 31. The heating support platform 36 is disposed at the bottom of the fixing mechanism 1. The heating element 35 is fixed to the heating support platform 36 to provide heat for the heating support platform 36. The heating support platform 36 supports the first bearing seat 11 and transfers heat to the first bearing seat 11. The first bearing seat 11 then transfers the heat to the joint bearing 100. Due to thermal radiation, the environment around the first bearing seat 11 will also be in a high-temperature environment, thereby enabling the joint bearing 100 to be located in an environment with high temperature and salt spray as a whole.
[0051] For example, the heating support platform 36 has eight mounting hole positions for mounting the heating element 35, and the heating element 35 is an electric heating rod. A convex platform is provided on one side of the heating support platform 36 facing the first bearing seat 11, and the first bearing seat 11 is provided with a heating hole. The convex platform is located in the heating hole and is in direct contact with the joint bearing 100, so as to conduct heat to the joint bearing 100 through surface-to-surface contact, thereby heating the joint bearing 100.
[0052] To facilitate the transfer of heat from the heating support platform 36 to the first bearing seat 11, the heating assembly further includes a heat insulation platform 37. The heat insulation platform 37 is disposed between the bottom plate 313 and the heating support platform 36, that is, the heat insulation platform 37 supports the heating support platform 36, and then the heat of the heating support platform 36 is transferred to the first bearing seat 11, providing a high-temperature environment for the first bearing seat 11.
[0053] As Figure 3 shown, the first bearing seat 11 includes an upper mounting seat 111 and a lower mounting seat 112. Both the upper mounting seat 111 and the lower mounting seat 112 are provided with receiving grooves. The upper mounting seat 111 is fixedly connected to the lower mounting seat 112. In this way, the mounting groove of the upper mounting seat 111 and the mounting groove of the lower mounting seat 112 are spliced into a mounting hole capable of accommodating the joint bearing 100. In addition, the upper mounting seat 111 and the lower mounting seat 112 are fixedly connected by fasteners such as bolts. Both the upper mounting seat 111 and the lower mounting seat 112 are provided with connection holes. The bolts pass through the connection holes and are fixedly connected to the pressing member 12. The pressing member 12 is provided with a threaded hole for threaded connection with the bolts.
[0054] As Figure 6As shown, the first bearing seat 11 is provided with a mounting hole for mounting the spherical plain bearing 100 to support the spherical plain bearing 100. The fixing mechanism 1 further includes a pressing member 12 and a friction member 13. The pressing member 12 and the friction member 13 are arranged in the mounting hole, and the pressing member 12 is fixedly connected to the first bearing seat 11. Along the axial direction of the mounting hole, both the pressing member 12 and the friction member 13 are located on both sides of the spherical plain bearing 100, and the friction member 13 is arranged between the pressing member 12 and the spherical plain bearing 100. It can be understood that on both sides of the spherical plain bearing 100, a pressing member 12 and a friction member 13 are provided on each side. The pressing member 12 is fixedly connected to the first bearing seat 11, specifically by screw connection. In this way, the pressing member 12 can cooperate with the spherical plain bearing 100 to press the friction member 13, where the friction member 13 is in close contact with the outer ring of the spherical plain bearing 100, thereby fixing the outer ring of the spherical plain bearing 100 to ensure that the inner ring of the spherical plain bearing 100 can rotate with the transmission shaft 21.
[0055] In some embodiments, the transmission shaft 21 includes a first shaft 211, a second shaft 212, and an elastic mounting sleeve 213. The elastic mounting sleeve 213 has a support sleeve and first flange plates 214 located at both ends of the support sleeve. The ends of the first shaft 211 and the second shaft 212 facing the first flange plates 214 are provided with second flange plates 215. The first shaft 211 and the second shaft 212 are respectively fixedly connected to the two first flange plates 214 of the elastic mounting sleeve 213, that is, the first flange plates 214 are connected to the second flange plates 215 to achieve the purpose of respectively fixedly connecting the first shaft 211 and the second shaft 212 to the elastic mounting sleeve 213. The first end of the second shaft 212 is connected to the power assembly to ensure the transmission of the power of the power assembly. The second end of the second shaft 212 is provided with a second flange plate 215. A tapered platform 216 is provided on the side of the second flange plate 215 facing the first flange plate 214. The elastic mounting sleeve 213 is provided with a tapered connection hole along the axial direction. After the second shaft 212 and the elastic mounting sleeve 213 are assembled, the tapered platform 216 is located in the tapered connection hole, and the volume of the tapered platform 216 is larger than the volume of the tapered connection hole. In this way, the tapered platform 216 presses the side wall of the tapered connection hole, causing the elastic mounting sleeve 213 to bulge outwards. The bulging out of the elastic mounting sleeve 213 will press the spherical plain bearing 100, thereby realizing an interference fit between the elastic mounting sleeve 213 and the spherical plain bearing 100, so as to achieve an interference connection between the transmission shaft 21 and the inner ring of the spherical plain bearing 100. When the transmission shaft 21 rotates, it drives the inner ring of the spherical plain bearing 100 to rotate. The central axes of the first shaft 211, the second shaft 212, and the elastic mounting sleeve 213 are collinearly arranged.
[0056] For example, the elastic mounting sleeve 213 is made of metal rubber, which can ensure the connection strength between the elastic mounting sleeve 213 and the first shaft 211 and the second shaft 212. In addition, the surface of the metal rubber is a non-smooth surface, which can increase the friction between the elastic mounting sleeve 213 and the inner ring of the spherical plain bearing 100, so that the inner ring of the spherical plain bearing 100 rotates with the transmission shaft 21.
[0057] In some embodiments, as Figure 1 shown, the transmission shaft 21 further includes a third shaft 217 and a torque limiter 218. The torque limiter 218 connects the second shaft 212 and the third shaft 217. The third shaft 217 is connected to the power assembly. The torque limiter 218 is used to limit the torque of the transmission shaft 21. Specifically, the torque limiter 218 is a torque limiting coupling.
[0058] In some embodiments, as Figure 2 shown, the transmission shaft 21 further includes two second bearing seats and two aerostatic bearings 210. The second bearing seats and the two aerostatic bearings 210 are arranged in one-to-one correspondence. The aerostatic bearings 210 are installed in the second bearing seats. One of the aerostatic bearings 210 supports the first shaft 211, and the other aerostatic bearing 210 is used to support the second shaft 212. The two aerostatic bearings 210 play a role in supporting the spherical plain bearing 100.
[0059] In some embodiments, continue to refer to Figure 1 , the power assembly includes a motor 22 and a connecting coupling 23. The output shaft of the motor 22 is connected to the transmission shaft 21 through the connecting coupling 23 to achieve the purpose of driving the transmission shaft 21 to rotate. The power mechanism 2 further includes an absolute encoder 25 and a torque sensor 24. The torque sensor 24 is used to obtain the torque change value of the spherical plain bearing, and the absolute encoder 25 is used to obtain the swing angle of the spherical plain bearing, so as to realize the closed-loop control of the swing angle of the spherical plain bearing 100. The torque limiter 218 is located on the side of the torque sensor 24 away from the motor 22 to achieve the purpose of limiting the torque of the transmission shaft 21.
[0060] It should be noted that the central axes of the various structures of the power mechanism 2 are collinear, that is, the central axes of the motor 22, the coupling, the torque limiter 218, the aerostatic bearing 210, and the transmission shaft 21 are collinear, etc., to improve the detection accuracy.
[0061] Combined with Figure 1 and Figure 2As shown, the spherical plain bearing 100 will be subjected to radial pressure during actual use. Therefore, the swing wear test device for the spherical plain bearing under high-temperature salt spray environment further includes a loading mechanism 4. The loading mechanism 4 is located directly above the fixing mechanism 1. The loading mechanism 4 includes a support frame 41, a first driving member 42 and a loading member 43. The first driving member 42 is fixed to the top of the support frame 41. The driving rod of the first driving member 42 passes through the support frame 41 and is fixedly connected to the loading member 43. The loading member 43 is located within the area surrounded by the support frame 41 and contacts the first bearing block 11. In addition, the loading member 43 is located within the box body 31 to achieve contact with the first bearing block 11. For example, the first driving member 42 can be an oil cylinder or an electric cylinder. The loading member 43 can be fixedly connected to the first bearing block 11 to apply pressure loading to the first bearing block 11. The loading force transmitted by the first driving member 42 is transmitted to the spherical plain bearing 100 through the first bearing block 11 to achieve the purpose of applying a loading force to the spherical plain bearing 100.
[0062] Due to the setting of the heating component and the fixed connection between the loading member 43 and the first bearing block 11, the first bearing block 11 will conduct heat to the loading member 43 at high temperatures. The loading member 43 will transfer the heat to the pressure sensor 46, resulting in high temperatures affecting the accuracy of the pressure sensor 46. Therefore, the loading mechanism 4 further includes a cooling structure 44 and a loading shaft 45. The first driving member 42 is connected to the loading member 43 through the loading shaft 45. The cooling structure 44 is sleeved on the outer periphery of the loading shaft 45. The pressure sensor 46 is arranged between the loading shaft 45 and the first driving member 42. The cooling structure 44 cools down the loading shaft 45, so that the heat transferred to the pressure sensor 46 drops significantly, to achieve the purpose of the normal operation of the pressure sensor 46 and ensure the detection accuracy of the pressure sensor 46.
[0063] The cooling structure 44 is composed of a cooling inner sleeve, a cooling outer sleeve and a cooling sealing plate. The cooling inner sleeve is located within the space formed by the cooling outer sleeve. The cooling inner sleeve, the cooling sealing plate and the cooling outer sleeve jointly enclose a cooling cavity. And the cooling inner sleeve is sleeved on the loading shaft 45. The cooling sealing plate is located at the bottom of the cooling outer sleeve and the cooling inner sleeve, and the cooling sealing plate is fixedly connected to the cooling outer sleeve and the cooling inner sleeve. The cooling sealing plate provides a seal for the cooling inner sleeve and the cooling outer sleeve while also realizing the support for the cooling inner sleeve and the cooling outer sleeve. The cooling sealing plate is in interference connection with the loading shaft 45 to ensure that the cooling structure 44 can be fixed on the loading shaft 45. The cooling outer sleeve has an inlet for the coolant to flow through and an outlet for the coolant to flow out. Both the inlet and the outlet are communicated with the cooling cavity. Then the coolant can enter the cooling cavity to exchange heat with the cooling inner sleeve. And the loading shaft 45 transfers heat to the cooling inner sleeve through heat conduction. The cooling inner sleeve exchanges heat with the coolant to achieve the purpose of cooling down, so as to also achieve the purpose of cooling down the loading shaft 45 and prevent the influence of temperature on the pressure sensor.
[0064] The central axes of the various components of the loading mechanism 4 are collinearly arranged, that is, the central axes of the cooling structure 44, the loading shaft 45, the central axis of the power assembly, and the central axis of the transmission shaft 21 are collinearly arranged, etc.
[0065] As Figure 1 shown, the swing wear test device further includes a support plate 5, and the power mechanism 2, the environmental simulation mechanism 3, and the fixing mechanism 1 are all fixed on the support plate 5.
[0066] For example, the power mechanism 2 further includes an encoder bracket 26, and the absolute encoder 25 is connected to the encoder bracket 26 by bolts, and the encoder bracket 26 is connected to the support plate 5 by bolts.
[0067] In some embodiments, the swing wear test device for a spherical plain bearing in a high-temperature salt spray environment further includes a heat dissipation mechanism, and the heat dissipation mechanism includes heat sinks and a heat dissipation fan 6. The heat sinks are attached to the transmission shaft 21 for temperature dissipation, and the heat dissipation fan 6 is located on one side of the transmission shaft 21 to enhance the transfer of temperature.
[0068] The swing wear test device for a spherical plain bearing in a high-temperature salt spray environment of the present invention can simulate the operating state of the spherical plain bearing 100 under salt spray conditions and the operating state under swing wear through the environmental simulation mechanism 3. The cooling structure 44 can prevent damage to the pressure sensor caused by high temperature. Radial loads are generated by the first driving member 42, and wear changes under different loads can be achieved. Through the present invention, the wear change process of the spherical plain bearing 100 under different working conditions can be satisfied, which is of great significance for maintaining the normal operation of mechanical equipment and has a good supporting effect on the performance evaluation of high-performance spherical plain bearings 100.
[0069] The working process of the swing wear test device for a spherical plain bearing in a high-temperature salt spray environment is as follows:
[0070] First, one end of the elastic mounting sleeve 213 is passed through the spherical plain bearing 100, so that the two first flange plates 214 of the elastic mounting sleeve 213 are exposed outside the spherical plain bearing 100. Then, the second flange plate 215 of the first shaft 211 is connected to one of the first flange plates 214 of the elastic mounting sleeve 213. After the tapered portion 216 of the second shaft 212 is inserted into the tapered connection hole of the elastic mounting sleeve 213 and installed in place, the other first flange plate 214 of the elastic mounting sleeve 213 is fixedly connected to the second flange plate 215 of the second shaft 212. Then, the assembled spherical plain bearing 100 is placed in the mounting groove of the lower mounting seat 112. Then, the pressing member 12 and the friction member 13 are sequentially placed in the mounting groove of the lower mounting seat 112, and the pressing member 12 is fixedly connected to the lower mounting seat 112. After the upper mounting seat 111 and the lower mounting seat 112 are buckled, the upper mounting seat 111 and the lower mounting seat 112 are connected by bolts, and then the upper mounting seat 111 is fixedly connected to the pressing member 12, so that the spherical plain bearing 100 is limited in the first bearing seat 11. And the spherical plain bearing 100 and the bearing seat are placed in the box body 31. Then, according to different test working conditions, different working condition corresponding environments are created for the spherical plain bearing 100 by the environmental simulation mechanism 3 simulating salt spray working conditions and high temperature salt spray working conditions. Among them, the salt spray nozzle 33 performs salt spray injection before heating up. The motion state of the spherical plain bearing 100 is obtained through the absolute encoder 25, the torque sensor 24 and the pressure sensor, so as to realize the swing test of the spherical plain bearing 100 under multiple working conditions.
[0071] In addition, the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A swing wear test device for a spherical plain bearing under a high-temperature salt spray environment, characterized in that, Comprising: A fixing mechanism (1), including a first bearing block (11), the first bearing block (11) being used to fix the spherical plain bearing (100), and along the radial direction of the spherical plain bearing (100), the first bearing block (11) having a salt spray through hole; A power mechanism (2), including a power component and a transmission shaft (21), the power component being connected to the transmission shaft (21) to drive the transmission shaft (21) to rotate, the transmission shaft (21) being used to extend into the inner ring of the spherical plain bearing (100) and drive the spherical plain bearing (100) to rotate; An environment simulation mechanism (3), including a box body (31), a salt spray component and a heating component, the salt spray component and the heating component being located inside the box body (31), the salt spray component being arranged towards the salt spray through hole so that salt spray enters the spherical plain bearing (100), and the heating component being used to raise the temperature inside the box body (31).
2. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, characterized in that The salt spray component includes a driving pump (32) and a salt spray nozzle (33), the inlet of the driving pump (32) being connected to a salt spray source, the outlet of the driving pump (32) being connected to the salt spray nozzle (33) through a salt spray pipe (34), and the salt spray nozzle (33) spraying out salt spray.
3. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, wherein The heating component includes a heating element (35) and a heating support platform (36), the heating support platform (36) being located within the area enclosed by the box body (31), the heating support platform (36) being arranged at the bottom of the fixing mechanism (1), and the heating element (35) being fixed to the heating support platform (36) to provide heat for the heating support platform (36).
4. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, wherein, The first bearing block (11) is provided with a mounting hole for mounting the spherical plain bearing (100), and the fixing mechanism (1) further includes a pressing member (12) and a friction member (13), the pressing member (12) and the friction member (13) being arranged within the mounting hole, and the pressing member (12) being fixedly connected to the first bearing block (11). Along the axial direction of the mounting hole, both the pressing member (12) and the friction member (13) are located on both sides of the spherical plain bearing (100), and the friction member (13) is arranged between the pressing member (12) and the spherical plain bearing (100).
5. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, characterized in that, The transmission shaft (21) includes a first shaft (211), a second shaft (212) and an elastic mounting sleeve (213). The first shaft (211) and the second shaft (212) are respectively fixedly connected to two first flange plates (214) of the elastic mounting sleeve (213). The first end of the second shaft (212) is connected to the power assembly. Second flange plates (215) are provided at one end of the first shaft (211) facing the elastic mounting sleeve (213) and the second end of the second shaft (212). The first flange plate (214) is fixedly connected to the second flange plate (215). A tapered platform (216) is provided on one side of the second flange plate (215) facing the first flange plate (214). The elastic mounting sleeve (213) is provided with a tapered connection hole along the axial direction. The tapered platform (216) is located in the tapered connection hole, and the volume of the tapered platform (216) is larger than the volume of the tapered connection hole.
6. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 5, characterized in that The transmission shaft (21) further includes a third shaft (217) and a torque limiter (218). The torque limiter (218) connects the second shaft (212) and the third shaft (217), and the third shaft (217) is connected to the power assembly.
7. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, characterized in that The swing wear test device for the spherical plain bearing under the high-temperature salt spray environment further includes a loading mechanism (4). The loading mechanism (4) is located directly above the fixing mechanism (1). The loading mechanism (4) includes a support frame (41), a pressure sensor (46), a first driving member (42) and a loading member (43). The first driving member (42) is fixed to the top of the support frame (41). The pressure sensor (46) is arranged between the first driving member (42) and the loading member (43). The driving rod of the first driving member (42) passes through the support frame (41) and is fixedly connected to the loading member (43). The loading member (43) is located within the area surrounded by the support frame (41) and contacts the first bearing seat (11). The loading member (43) is located inside the box body (31).
8. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 7, wherein The loading mechanism (4) further includes a cooling structure (44) and a loading shaft (45). The first driving member (42) is connected to the loading member (43) through the loading shaft (45). The pressure sensor (46) is located between the first driving member (42) and the loading shaft (45). The cooling structure (44) is sleeved on the outer periphery of the loading shaft (45).
9. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, characterized in that The power assembly includes a motor (22) and a connecting coupling (23). The output shaft of the motor (22) is connected to the transmission shaft (21) through the connecting coupling (23). The power mechanism (2) further includes an absolute encoder (25) and a torque sensor (24). The torque sensor (24) is used to obtain the torque change value of the spherical plain bearing, and the absolute encoder (25) is used to obtain the swing angle of the spherical plain bearing.
10. The swing wear test device for a spherical plain bearing under a high-temperature salt spray environment according to claim 1, wherein, It further includes a heat dissipation mechanism, the heat dissipation mechanism includes a heat sink and a cooling fan (6), the heat sink is attached to the transmission shaft (21), and the cooling fan (6) is located on one side of the transmission shaft (21).