A bearing load limit testing device

Abstract

The present invention relates to the technical field of bearing testing equipment, and specifically to a bearing load limit testing equipment. It comprises a main body, a first mounting seat is fixedly connected to the main body, two cassettes are connected to the internal sealing sliding connection of the first mounting seat, the two cassettes are surrounded by the outer side of the outer ring of the bearing test piece, a test shaft assembly is rotatably connected to the main body, the test shaft assembly is inserted into the inner side of the inner ring of the bearing test piece, a radial loading system and an axial loading system are arranged on the main body, the test shaft assembly is transmission-connected to a driving mechanism, and an environmental simulation system is arranged inside the main body corresponding to the bearing test piece. The present application can not only perform radial and axial static and dynamic load tests, but also can truly simulate the working environment of the bearing in actual application. By testing under different environmental conditions, the testing requirements of different types of bearings are met, and the reliability and practicality of the test results are improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearing testing equipment, and in particular to a bearing load limit testing equipment. Background Art

[0002] In modern industry, bearings, as key basic mechanical components, are widely used in various mechanical equipment. Whether in traditional industries such as automobiles, construction machinery, and home appliances, or emerging fields such as wind power, robots, and new energy vehicles, the demand for bearings continues to grow. In order to ensure the reliability and safety of mechanical equipment, it is necessary to accurately understand the load limit performance of bearings. Different application scenarios have different requirements for the load capacity of bearings. For example, in heavy machinery, bearings need to withstand huge radial and axial loads; in high-speed rotating equipment, bearings need to have good dynamic load capacity and fatigue resistance.

[0003] In the related technology, the bearing load test equipment is mainly composed of a loading system, a driving system, a test system, and a control system. Currently, most bearing load test equipment can only perform a single type of load test, such as radial load or axial load test, and cannot meet the test requirements under complex working conditions.

[0004] Therefore, in order to meet the needs of modern industry for bearing performance testing, how to increase the function of high bearing load limit testing equipment is an issue that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In order to meet the needs of modern industry for bearing performance testing and increase the function of high bearing load limit testing equipment, the present application provides a bearing load limit testing equipment.

[0006] The bearing load limit test equipment provided in this application adopts the following technical solution:

[0007] A bearing load limit testing device comprises a main body, to which a first mounting seat for mounting a bearing test piece is fixedly connected, the first mounting seat is internally sealed and slidably connected with two cartridges radially arranged along the bearing test piece, the two cartridges embrace the outer side of the outer ring of the bearing test piece, a test shaft assembly is rotatably connected to the main body, the test shaft assembly is inserted into the inner side of the inner ring of the bearing test piece, a radial loading system and an axial loading system are arranged on the main body, the radial loading system is transmission-connected to the cartridge, the axial loading system is transmission-connected to the test shaft assembly, the test shaft assembly is transmission-connected to a driving mechanism, and an environmental simulation system is arranged inside the main body corresponding to the mounting of the bearing test piece.

[0008] By adopting the above technical solution, the main body can provide a stable and reliable installation foundation for each component of the test equipment, the radial loading system can drive the holder to radially load the bearing test piece, the axial loading system can drive the test shaft assembly to axially load the bearing test piece, the driving mechanism can drive the bearing test piece to rotate, and the environmental simulation system can truly simulate the working environment of the bearing in actual application, thereby improving the reliability and practicality of the test results. Therefore, the test equipment provided by the present application is fully functional, and can not only perform radial and axial load tests, but also perform tests under different environmental conditions to meet the testing requirements of different types of bearings.

[0009] Furthermore, the test shaft assembly includes a coaxially arranged test shaft and a drive shaft, the bottom of the main body is fixedly connected to a base plate, a second mounting seat is fixedly mounted on the base plate, a first rotating seat is slidably connected inside the second mounting seat, the test shaft is rotatably connected to the first rotating seat, a first pressure sensor is abuttedly connected between the first rotating seat and the second mounting seat, a vibration sensor is transmission-connected to the outer side of the test shaft, and a locking device for locking the inner ring of the bearing test piece is provided at one end of the test shaft away from the first rotating seat corresponding to the drive shaft, and the drive shaft is transmission-connected to the axial loading system.

[0010] By adopting the above technical solution, the inner ring of the bearing test piece is fixed on the test shaft by using the locking device, and the axial loading system can apply axial force to the bearing test piece through the driving shaft. After the bearing test piece is subjected to the axial pressure, the axial force will be transmitted to the first pressure sensor through the testing shaft and the first rotating seat. The first pressure sensor can monitor the magnitude of the axial force in real time, and thus can more accurately measure the axial load limit of the bearing test piece. During the test, when the driving mechanism drives the driving shaft to drive the bearing test piece to rotate, the bearing test piece will drive the test shaft to rotate synchronously, and the vibration sensor will monitor the vibration condition of the bearing test piece in real time during the rotation of the test shaft. By detecting the vibration signal generated by the bearing under different load conditions, the working condition of the bearing can be intuitively understood.

[0011] Furthermore, the locking device includes an installation cavity, which is opened at one end of the test shaft away from the first rotating seat, and the outer side surface of the test shaft is opened with a plurality of first sliding grooves symmetrically arranged with a center, and the first sliding grooves extend into the interior of the installation cavity, and the interior of the first sliding groove is slidably connected with a slider, and the side of the slider facing the interior of the installation cavity is set as an inclined surface, and the interior of the installation cavity is slidably connected with a cone corresponding to the slider, and the cone is abutted and connected to the drive shaft, and the outer side of the drive shaft is threadedly connected with a locking ring, and the lower end face of the locking ring is abutted and connected to the upper end of the inner ring of the bearing test piece.

[0012] By adopting the above technical solution, when the axial loading system is used to drive the drive shaft to abut against the frustum, the frustum will move downward and push the slider to move outward, and the slider will abut against the inner side of the inner ring of the bearing test piece. At the same time, the locking ring is tightened to press the inner ring end of the bearing test piece, thereby forming a fixed connection between the inner ring of the bearing test piece and the test shaft and the drive shaft, thereby ensuring that the inner ring of the bearing test piece can rotate stably and reliably during the test, thereby ensuring the accuracy and reliability of the test results.

[0013] Furthermore, a spring sheet is abuttedly connected between the slider and the test shaft so that the slider can automatically slide into the installation cavity when no external force is applied, and a first spring is abuttedly connected between the cone and the test shaft so that the cone can slide outside the installation cavity. A second spring is mounted on the outer side of the test shaft, and the lower end of the second spring is fixedly connected to the outer side of the test shaft, and the upper end of the second spring is fixedly connected to a push ring, which is slidably connected to the outer side of the test shaft, and the upper end face of the push ring is abuttedly connected to the lower end of the inner ring of the bearing test piece.

[0014] By adopting the above technical solution, the spring sheet can be used to make the slider automatically slide into the installation cavity when not affected by external force, and the first spring can be used to make the cone slide outside the installation cavity. In this way, when the bearing test piece is removed after the test is completed, the slider will automatically relax the lock on the inner ring of the bearing test piece under the action of the first spring and the spring sheet, and at the same time, under the action of the second spring, the bearing test piece will be pushed out of the test shaft through the push ring, so that the bearing test piece can be quickly removed.

[0015] Furthermore, the radial loading system includes a first radial motor and a second radial motor, and the first radial motor and the second radial motor are symmetrically fixedly mounted on the main body at positions at both ends of the first mounting seat. The output shafts of the first radial motor and the second radial motor are fixedly connected with couplings, and a screw is fixedly connected to the coupling. A threaded sleeve is threadedly connected to the outer side of the screw, and the threaded sleeve is slidably connected to the first mounting seat. One end of the threaded sleeve away from the first radial motor or the second radial motor is respectively mounted on the holder, and a second pressure sensor is abutted against the threaded sleeve and the holder.

[0016] By adopting the above technical solution, the first radial motor and the second radial motor can respectively drive the corresponding screw to rotate, and the screw will drive the corresponding threaded sleeve and the first mounting seat to move when rotating. The movement of the first mounting seat can not only achieve clamping and fixing of the outer ring of the bearing test piece, but also apply unidirectional radial force or bidirectional radial force to the bearing test piece, and the second pressure sensor arranged between the threaded sleeve and the clamping seat can test the size of the radial force, and then accurately measure the radial load limit of the bearing test piece under the action of different radial forces.

[0017] Furthermore, the axial loading system includes a telescopic driving member, which is arranged along the axial direction of the driving shaft, and the fixed end of the telescopic driving member is fixedly installed on the main body. The telescopic end of the telescopic driving member is fixedly connected to a mounting plate, the driving shaft is rotatably connected to the mounting plate, the driving mechanism is installed on the mounting plate, and a plurality of vertically arranged guide rods are fixedly connected to the main body. Guide holes are opened on the mounting plate corresponding to the guide rods, and the guide rods are slidably connected to the mounting plate through the guide holes.

[0018] By adopting the above technical solution, the telescopic driving member can be used to drive the mounting plate to drive the driving shaft to move axially. The axial movement of the driving shaft can not only clamp and fix the inner ring of the bearing test piece, but also apply axial force to the bearing test piece. The guide rod can increase the stability of the mounting plate during the movement, thereby ensuring the stable and reliable axial movement of the driving shaft.

[0019] Furthermore, the driving mechanism includes a driving motor, a gearbox body is fixedly mounted on the mounting plate, the driving motor is fixedly mounted on the gearbox body, the output shaft of the driving motor passes through the outer side surface of the gearbox body and is fixedly connected to a driving wheel, a driven wheel is mounted on the driving shaft corresponding to the driving wheel, and a timing belt is connected between the driving wheel and the driven wheel.

[0020] By adopting the above technical solution, the driving motor can be used to drive the driving wheel to rotate. During the rotation process, the driving wheel drives the driven wheel to rotate through the timing belt, and the driven wheel drives the driving shaft to rotate.

[0021] Furthermore, the environmental simulation system includes a corrosion module, which includes a liquid storage tank, wherein the liquid storage tank stores corrosive liquid, and the liquid storage tank is respectively sealed and fixedly connected with a first input pipe and a first output pipe, the first output pipe is sealedly connected with a first delivery pump at one end away from the liquid storage tank, the first delivery pump is sealedly connected with a spray pipe at one end away from the first output pipe, and the spray pipe is sealed and fixedly connected with a nozzle at one end away from the first delivery pump, the nozzle faces the lower end of the bearing test piece, and a receiving plate is installed on the main body corresponding to the lower end of the bearing test piece, and the receiving plate is sealed and connected to the first input pipe.

[0022] By adopting the above-mentioned technical scheme, the corrosive liquid inside the liquid storage tank can be sprayed onto the bearing test piece through the spray pipe and the nozzle using the first delivery pump, thereby simulating the working condition of the bearing test piece in a corrosive environment, thereby effectively testing the load-bearing capacity of the bearing test piece under corrosive conditions.

[0023] Furthermore, the environmental simulation system includes a temperature control module, which includes a temperature control box. The temperature control box is filled with a temperature control medium. A temperature controller for adjusting the temperature of the temperature control medium is provided inside the temperature control box. A second input pipe and a second output pipe are respectively sealed and fixedly connected to the temperature control box. An end of the second output pipe away from the temperature control box is sealed and connected to a second delivery pump. An end of the second delivery pump away from the second output pipe is sealed and connected to a connecting pipe. Temperature control circulation channels are opened inside the first mounting seat and the clamping seat corresponding to the connecting pipe and the second input pipe. A temperature sensor is embedded in the clamping seat. The connecting pipe and the second input pipe are respectively sealed and connected to the two ends of the temperature control circulation channel.

[0024] By adopting the above technical solution, the temperature control medium filled in the temperature control box can be pumped into the temperature control circulation channel through the connecting pipe by the second delivery pump for circulation heat exchange. In this process, the temperature sensor and the temperature controller can accurately control the ambient temperature of the bearing test piece during the extreme test, thereby simulating the working conditions of the bearing test piece in different temperature environments, thereby effectively testing the load-bearing capacity of the bearing test piece under different temperature environment conditions.

[0025] Furthermore, the temperature control circulation channel includes an input channel, a connecting channel, and an output channel. The input channel and the output channel are symmetrically opened on one side of the first mounting seat, and the connecting channel is symmetrically opened on the other side of the first mounting seat. An arc channel is opened inside the holder corresponding to the bearing test piece. One arc channel on the holder can be connected to the input channel and the connecting channel, and the other arc channel on the holder can be connected to the output channel and the connecting channel.

[0026] By adopting the above technical solution, when the temperature control medium enters the input channel from the connecting pipe, the temperature control medium inside the input channel will enter the interior of one of the holders through the arc channel, and the temperature control medium inside the holder will enter the arc channel inside another holder through the connecting channel, and enter the output channel from the arc channel inside the other holder, and the temperature control medium in the output channel will finally enter the interior of the temperature control box through the second input pipe for circulation.

[0027] Beneficial effects achieved:

[0028] The radial loading system of the present application can drive the cassette to radially load the bearing test piece, the axial loading system can drive the test shaft assembly to axially load the bearing test piece, the driving mechanism can drive the bearing test piece to rotate, and the environmental simulation system can truly simulate the working environment of the bearing in actual application, thereby improving the reliability and practicality of the test results. Therefore, the test equipment provided by the present application is fully functional, and can not only perform radial and axial load tests, but also perform tests under different environmental conditions to meet the test requirements of different types of bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the present application.

[0032] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of Part I.

[0033] Figure 5 It is a schematic diagram of the structural decomposition of a test shaft assembly in one embodiment of the present application.

[0034] Figure 6It is a schematic diagram of the structural decomposition of a radial loading system in one embodiment of the present application.

[0035] Figure 7 It is a schematic diagram of the structural decomposition of the axial loading system in one embodiment of the present application.

[0036] Figure 8 It is a schematic diagram of the structural decomposition of the driving mechanism in one embodiment of the present application.

[0037] Fig. 9 It is a schematic diagram of the structural decomposition of the corrosion module in one embodiment of the present application.

[0038] Fig.10 It is a schematic diagram of the structural decomposition of a temperature control module in one embodiment of the present application.

[0039] Fig.11 It is an internal schematic diagram of a temperature control module in one embodiment of the present application.

[0040] Fig.12 yes Fig.11 Part II is an enlarged schematic diagram of the structure.

[0041] Description of reference numerals: 100, main body; 101, first mounting seat; 102, holder; 103, bottom plate; 104, second mounting seat; 105, first rotating seat; 106, first pressure sensor; 107, vibration sensor; 108, second pressure sensor; 109, temperature sensor; 200, test shaft assembly; 201, test shaft; 202, drive shaft; 203, mounting cavity; 204, slide groove; 205, slider; 206, cone; 207, locking ring; 208, spring; 209, first spring; 210, second spring; 211, push ring; 300, radial loading system; 301, first radial motor; 302, second radial motor; 303, coupling; 304, screw; 305, threaded sleeve; 400, axial loading system; 401, telescopic drive; 402, mounting plate; 403, guide rod; 404, guide hole; 500 , driving mechanism; 501, driving motor; 502, gearbox body; 503, driving wheel; 504, driven wheel; 505, timing belt; 600, bearing test piece; 601, protective cover; 700, environmental simulation system; 701, corrosion module; 7011, liquid storage tank; 7012, first input pipe; 7013, first output pipe; 7014, first delivery pump; 7015, spray pipe; 7016, nozzle; 7017 , receiving plate; 702, temperature control module; 7021, temperature control box; 7022, second input pipe; 7023, second output pipe; 7024, second delivery pump; 7025, connecting pipe; 800, temperature control circulation channel; 801, input channel; 802, connecting channel; 803, output channel; 804, arc channel; 805, second slide groove; 806, third slide groove; 807, baffle; 808, push rod; 809, slot. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-12 This application is described in further detail.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] An embodiment of the present application discloses a bearing load limit testing device.

[0046] Please refer to Figure 1 and Figure 2 In one embodiment of the present application, a bearing load limit test device includes a main body 100, which can provide a stable and reliable installation foundation for each component of the test device. A first mounting seat 101 for mounting a bearing test piece 600 is fixedly connected to the main body 100. The first mounting seat 101 is internally sealed and slidably connected to two holders 102 radially arranged along the bearing test piece 600. The two holders 102 embrace the outer side of the outer ring of the bearing test piece 600. A test shaft assembly 200 is rotatably connected to the main body 100. The test shaft assembly 200 is inserted into the inner side of the inner ring of the bearing test piece 600. A protective cover 601 covering the first mounting seat 101 is sleeved on the test shaft assembly 200. The protective cover 601 is made of high-strength transparent material. The protective cover 601 can prevent the bearing test piece 600 from being accidentally damaged during the limit test and popping out of the test shaft assembly 200 during the test process, thereby ensuring safety during the test process.

[0047] Please refer to Figure 1 and Figure 2 In one embodiment of the present application, a radial loading system 300 and an axial loading system 400 are provided on the main body 100, the radial loading system 300 is transmission-connected to the holder 102, the radial loading system 300 can drive the holder 102 to radially load the bearing test piece 600, the axial loading system 400 is transmission-connected to the test shaft assembly 200, the axial loading system 400 can drive the test shaft assembly 200 to axially load the bearing test piece 600, the test shaft assembly 200 is transmission-connected to a driving mechanism 500, the driving mechanism 500 can drive the bearing test piece 600 to rotate, and an environmental simulation system 700 is provided inside the main body 100 corresponding to the bearing test piece 600. The environmental simulation system 700 can truly simulate the working environment of the bearing in actual application, thereby improving the reliability and practicality of the test results. The present application is fully functional, and can not only perform radial and axial load tests, but also perform tests under different environmental conditions to meet the testing requirements of different types of bearings.

[0048] Please refer to Figure 3 and Figure 5 In one embodiment of the present application, the test shaft assembly 200 includes a coaxially arranged test shaft 201 and a drive shaft 202, a bottom plate 103 is fixedly connected to the bottom of the main body 100, a second mounting seat 104 is fixedly mounted on the bottom plate 103, a first rotating seat 105 is slidably connected inside the second mounting seat 104, the test shaft 201 is rotatably connected to the first rotating seat 105, a first pressure sensor 106 is abutted and connected between the first rotating seat 105 and the second mounting seat 104, a vibration sensor 107 is transmission-connected to the outer side surface of the test shaft 201, a locking device for locking the inner ring of the bearing test piece 600 is arranged at one end of the test shaft 201 away from the first rotating seat 105 corresponding to the drive shaft 202, and the drive shaft 202 is transmission-connected to the axial loading system 400. The inner ring of the bearing test piece 600 is fixed on the test shaft 201 through a locking device, and the axial loading system 400 can apply axial force to the bearing test piece 600 through the driving shaft 202. After the bearing test piece 600 is subjected to the axial pressure, the axial force will be transmitted to the first pressure sensor 106 through the test shaft 201 and the first rotating seat 105. The first pressure sensor 106 can monitor the magnitude of the axial force in real time, and thus can more accurately measure the axial load limit of the bearing test piece 600.

[0049] During the test, when the drive mechanism 500 drives the drive shaft 202 to drive the bearing test piece 600 to rotate, the bearing test piece 600 will drive the test shaft 201 to rotate synchronously, and the vibration sensor 107 will monitor the vibration condition of the bearing test piece 600 in real time during the rotation of the test shaft 201. By detecting the vibration signal generated by the bearing under different load conditions, the working condition of the bearing can be intuitively understood. When the bearing is in a normal working state, the vibration signal is relatively stable; when the bearing test piece 600 fails or approaches the load limit, the vibration signal will change significantly. For example, if the bearing test piece 600 has problems such as wear, cracks or poor lubrication, the vibration amplitude and frequency will increase significantly. In the bearing load limit test, the vibration sensor 107 can timely warn of potential faults. When the bearing test piece 600 approaches or reaches the load limit, the vibration signal will show abnormal changes, such as a sudden increase in amplitude and a shift in frequency. These abnormal signals can be used as early warning signals to remind testers to take timely measures to avoid serious bearing failures. In addition, vibration sensors can also be combined with other monitoring devices (such as temperature sensors, pressure sensors, etc.) to form a multi-parameter monitoring system to improve the accuracy and reliability of fault warning.

[0050] Please refer to Figure 4 and Figure 5In one embodiment of the present application, the locking device includes an installation cavity 203, which is opened at one end of the test shaft 201 away from the first rotating seat 105. The outer side surface of the test shaft 201 is provided with a plurality of first slide grooves 204 symmetrically arranged with a center, and the first slide grooves 204 penetrate into the interior of the installation cavity 203. The interior of the first slide groove 204 is slidably connected with a slider 205, and a side of the slider 205 facing the interior of the installation cavity 203 is set as an inclined surface. The interior of the installation cavity 203 is slidably connected with a cone 206 corresponding to the slider 205, and the cone 206 is abutted against the drive shaft 202. The outer side of the drive shaft 202 is threadedly connected with a locking ring 207, and the lower end face of the locking ring 207 is abutted against the upper end of the inner ring of the bearing test piece 600. When the axial loading system 400 is used to drive the drive shaft 202 to abut against the cone 206, the cone 206 will move downward and push the slider 205 to move outward, and the slider 205 will abut against the inner side of the inner ring of the bearing test piece 600. At the same time, by tightening the locking ring 207, it is pressed against the inner ring end of the bearing test piece 600, thereby forming a fixed connection between the inner ring of the bearing test piece 600 and the test shaft 201 and the drive shaft 202, thereby ensuring that the inner ring of the bearing test piece 600 can rotate stably and reliably during the test, thereby ensuring the accuracy and reliability of the test results.

[0051] Please refer to Figure 4 and Figure 5 In one embodiment of the present application, a spring sheet 208 is abutted and connected between the slider 205 and the test shaft 201 so that the slider 205 can automatically slide into the installation cavity 203 when no external force is applied, and a first spring 209 is abutted and connected between the cone 206 and the test shaft 201 so that the cone 206 can slide outside the installation cavity 203. A second spring 210 is sleeved on the outer side of the test shaft 201, and the lower end of the second spring 210 is fixedly connected to the outer side of the test shaft 201, and the upper end of the second spring 210 is fixedly connected to a push ring 211, which is slidably connected to the outer side of the test shaft 201, and the upper end face of the push ring 211 is abutted and connected to the lower end of the inner ring of the bearing test piece 600. In this way, when the bearing test piece 600 is removed after the test is completed, the slider 205 will automatically loosen the lock on the inner ring of the bearing test piece 600 under the action of the first spring 209 and the spring 208, and at the same time, under the action of the second spring 210, the bearing test piece 600 will be pushed out from the test shaft 201 through the push ring 211, so as to quickly remove the bearing test piece 600.

[0052] Please refer to Figure 3 and Figure 6In one embodiment of the present application, the radial loading system 300 includes a first radial motor 301 and a second radial motor 302, which are symmetrically fixedly installed on the main body 100 at both ends of the first mounting seat 101, and the output shafts of the first radial motor 301 and the second radial motor 302 are fixedly connected with couplings 303, and the couplings 303 are fixedly connected with screws 304, and the outer side of the screw 304 is threadedly connected with a threaded sleeve 305, and the threaded sleeve 305 is slidably connected to the first mounting seat 101, and one end of the threaded sleeve 305 away from the first radial motor 301 or the second radial motor 302 is respectively installed on the holder 102, and a second pressure sensor 108 is abutted and connected between the threaded sleeve 305 and the holder 102. The first radial motor 301 and the second radial motor 302 can respectively drive the corresponding screw 304 to rotate, and the screw 304 will drive the corresponding threaded sleeve 305 and the first mounting seat 101 to move when rotating. The movement of the first mounting seat 101 can not only realize the clamping and fixing of the outer ring of the bearing test piece 600, but also apply unidirectional radial force or bidirectional radial force to the bearing test piece 600. The second pressure sensor 108 arranged between the threaded sleeve 305 and the clamping seat 102 can realize the testing of the size of the radial force, and then can accurately measure the radial load limit of the bearing test piece 600 under the action of different radial forces.

[0053] Please refer to Figure 2 and Figure 7 In one embodiment of the present application, the axial loading system 400 includes a telescopic driving member 401, which is arranged along the axial direction of the driving shaft 202. The fixed end of the telescopic driving member 401 is fixedly installed on the main body 100. The telescopic end of the telescopic driving member 401 is fixedly connected to a mounting plate 402. The driving shaft 202 is rotatably connected to the mounting plate 402. The driving mechanism 500 is installed on the mounting plate 402. A plurality of vertically arranged guide rods 403 are fixedly connected to the main body 100. A guide hole 404 is opened on the mounting plate 402 corresponding to the guide rod 403. The guide rod 403 is slidably connected to the mounting plate 402 through the guide hole 404. The telescopic driving member 401 can drive the mounting plate 402 to drive the driving shaft 202 to move axially. The axial movement of the driving shaft 202 can not only clamp and fix the inner ring of the bearing test piece 600, but also apply axial force to the bearing test piece 600. The guide rod 403 can increase the stability of the mounting plate 402 during the movement, thereby ensuring the stable and reliable axial movement of the driving shaft 202.

[0054] In one embodiment of the present application, the telescopic drive member 401 is configured as an electric telescopic rod, which can not only accurately control the extension and retraction length by adjusting parameters such as current or voltage. This is crucial for bearing load limit test equipment, which can ensure that the loading force acts accurately on specific parts of the bearing and improve the accuracy and reliability of the test. For example, in complex test scenarios, it is necessary to accurately load bearings of different sizes and types. It can also respond quickly after receiving the control signal to achieve rapid extension or retraction. During the bearing load limit test, the loading conditions can be quickly adjusted according to different test requirements. This feature of the electric telescopic rod can greatly improve the test efficiency, reduce waiting time, and make the test process smoother and more efficient. In addition, the movement of the electric telescopic rod is achieved by motor drive and mechanical structure, and the extension and retraction length of each action can be kept highly consistent. In multiple repeated tests, this ensures the consistency of the test conditions and provides a reliable basis for the stability and reliability evaluation of bearing performance. Whether it is a large-scale batch test or an in-depth study of a specific bearing, repeatability is a key factor in ensuring the validity of the test results. Therefore, configuring the telescopic drive member 401 as an electric telescopic rod brings many advantages to the bearing load limit test equipment, such as precise control, fast response, good repeatability, easy operation, high reliability and strong adaptability, which effectively improves the performance of the test equipment and the efficiency and quality of the test work.

[0055] It is understandable that in other embodiments of the present application, in other embodiments, the telescopic drive member 401 can also be configured as different drive modes such as hydraulic drive, pneumatic drive, spiral drive or rack and pinion drive. Each drive mode has its advantages and disadvantages and needs to be selected according to specific application scenarios and test requirements.

[0056] Please refer to Figure 2 and Figure 8 In one embodiment of the present application, the driving mechanism 500 includes a driving motor 501, a gearbox body 502 is fixedly mounted on the mounting plate 402, the driving motor 501 is fixedly mounted on the gearbox body 502, the output shaft of the driving motor 501 penetrates the outer side of the gearbox body 502 and is fixedly connected to a driving wheel 503, a driven wheel 504 is mounted on the driving shaft 202 corresponding to the driving wheel 503, and a timing belt 505 is connected between the driving wheel 503 and the driven wheel 504. The driving motor 501 can drive the driving wheel 503 to rotate, and the driving wheel 503 drives the driven wheel 504 to rotate through the timing belt 505 during the rotation process, and the driven wheel 504 will drive the driving shaft 202 to rotate.

[0057] Please refer to Figure 2 and Fig. 9In one embodiment of the present application, the environmental simulation system 700 includes a corrosion module 701, and the corrosion module 701 includes a liquid storage tank 7011. The liquid storage tank 7011 stores corrosive liquid inside. The liquid storage tank 7011 is respectively sealed and fixedly connected with a first input pipe 7012 and a first output pipe 7013. The first output pipe 7013 is sealedly connected to a first delivery pump 7014 at one end away from the liquid storage tank 7011, and a spray pipe 7015 is sealedly connected to the first delivery pump 7014 at one end away from the first output pipe 7013. The spray pipe 7015 is sealed and fixedly connected to a nozzle 7016 at one end away from the first delivery pump 7014, and the nozzle 7016 faces the lower end of the bearing test piece 600. A receiving tray 7017 is installed on the main body 100 corresponding to the lower end of the bearing test piece 600, and the receiving tray 7017 is sealedly connected to the first input pipe 7012. The first delivery pump 7014 can spray the corrosive liquid inside the liquid storage tank 7011 onto the bearing test piece 600 through the spray pipe 7015 and the nozzle 7016, so as to simulate the working condition of the bearing test piece 600 in a corrosive environment, thereby effectively testing the load bearing capacity of the bearing test piece 600 under corrosive conditions.

[0058] Please refer to Figure 2 and Fig.10 In one embodiment of the present application, the environmental simulation system 700 includes a temperature control module 702, the temperature control module 702 includes a temperature control box 7021, the temperature control box 7021 is filled with a temperature control medium, the temperature control medium is configured as thermal conductive silicone oil, the thermal conductive silicone oil not only has good thermal stability and chemical stability, can maintain stable performance in a wide temperature range; it also has the advantage of high thermal conductivity, can effectively transfer heat and cold; and has good fluidity, easy to circulate in the system, to ensure uniform heat conduction and cold conduction.

[0059] It is understandable that in other embodiments of the present application, the temperature control medium can also be configured as some low-boiling point liquids, such as ethanol, acetone, etc. These working fluids evaporate when heated, absorb heat, condense when cooled, and release heat, thereby achieving efficient heat conduction and cold conduction. It can also be configured as a mixture of liquid metal, water and ethylene glycol, etc. Liquid metals such as gallium-indium alloys have extremely high thermal conductivity, far exceeding traditional heat conduction media; water has a high specific heat capacity and thermal conductivity, and can effectively absorb and transfer heat and cold. The addition of ethylene glycol can lower the freezing point of the mixture, so that it can remain liquid at a lower temperature, thereby achieving cold conduction.

[0060] Please refer to Figure 2 and Fig.10In one embodiment of the present application, a temperature controller for adjusting the temperature of the temperature-controlled medium is provided inside the temperature-controlled box 7021, and a second input pipe 7022 and a second output pipe 7023 are respectively sealed and fixedly connected to the temperature-controlled box 7021, and an end of the second output pipe 7023 away from the temperature-controlled box 7021 is sealed and connected to a second delivery pump 7024, and an end of the second delivery pump 7024 away from the second output pipe 7023 is sealed and connected to a connecting pipe 7025, and a temperature control circulation channel 800 is opened inside the first mounting seat 101 and the card seat 102 corresponding to the connecting pipe 7025 and the second input pipe 7022, and a temperature sensor 109 is embedded in the card seat 102, and the connecting pipe 7025 and the second input pipe 7022 are respectively sealed and connected to the two ends of the temperature control circulation channel 800. The second delivery pump 7024 can be used to pump the temperature control medium filled in the temperature control box 7021 through the connecting pipe 7025 to the temperature control circulation channel 800 for circulation heat exchange. In this process, the temperature sensor 109 and the temperature controller can be used to accurately control the ambient temperature of the bearing test piece 600 during the extreme test. This can simulate the working conditions of the bearing test piece 600 in different temperature environments, thereby effectively testing the load-bearing capacity of the bearing test piece 600 under different temperature environment conditions.

[0061] Please refer to Fig.10 and Fig.11 In one embodiment of the present application, the temperature control circulation channel 800 includes an input channel 801, a connecting channel 802, and an output channel 803. The input channel 801 and the output channel 803 are symmetrically opened on one side of the first mounting seat 101, and the connecting channel 802 is symmetrically opened on the other side of the first mounting seat 101. An arc channel 804 is opened inside the holder 102 corresponding to the bearing test piece 600. The arc channel 804 on one holder 102 can be connected to the input channel 801 and the connecting channel 802, and the arc channel 804 on the other holder 102 can be connected to the output channel 803 and the connecting channel 802. When the temperature control medium enters the input channel 801 from the connecting pipe 7025, the temperature control medium inside the input channel 801 will enter the interior of one card holder 102 through the arc channel 804, and the temperature control medium inside the card holder 102 will enter the arc channel 804 inside another card holder 102 through the connecting channel 802, and enter the output channel 803 from the arc channel 804 inside the other card holder 102, and the temperature control medium in the output channel 803 will finally enter the interior of the temperature control box 7021 through the second input pipe 7022 for circulation.

[0062] Please refer to Fig.11 and Fig.12In a specific embodiment of the present application, a second slide groove 805 is provided on the first mounting seat 101 corresponding to the input channel 801, and a third slide groove 806 is provided on the first mounting seat 101 corresponding to the output channel 803. The interiors of the second slide groove 805 and the third slide groove 806 are both sealed and slidably connected with baffles 807. The outer sides of the two baffles 807 are respectively fixedly connected with push rods 808 corresponding to the two card seats 102. A card slot 809 is provided on the side of the card seat 102 corresponding to the push rod 808. The card slot 809 is connected to the push rod 808 with a resistance. During the movement of the card seat 102, the push rod 808 and the baffle 807 can be driven to move through the card slot 809. When the two card seats 102 move, When the two card seats 102 are in a correspondingly close state, the baffle 807 will be driven to move the input channel 801 and the output channel 803 away, so that the input channel 801 and the output channel 803 are connected with the arc channel 804. When the two card seats 102 are in a correspondingly separated state, the arc channel 804 will be sealed and blocked by the inner wall surface of the first mounting seat 101. At the same time, during the separation of the two card seats 102, the card slot 809 will drive the push rod 808 and the baffle 807 to move to block the position of the input channel 801 and the output channel 803, so that the input channel 801 and the output channel 803 are in a closed state, thereby preventing the temperature control medium from leaking from the input channel 801 and the output channel 803.

[0063] The implementation principle of a bearing load limit test device in the embodiment of the present application is:

[0064] When the static load limit test of the bearing is required, first open the protective cover 601 and place the bearing test piece 600 on the locking device at the top of the test shaft 201, then control the telescopic drive member 401 to drive the mounting plate 402 and the drive shaft 202 to descend, and make the lower end of the drive shaft 202 abut against the locking device, the drive shaft 202 will push the cone 206 to move downward, and push the slider 205 to move outward, and the slider 205 will abut against the inner side of the inner ring of the bearing test piece 600, and at the same time, by tightening the lock, The tightening ring 207 is pressed against the inner ring end of the bearing test piece 600, so that the inner ring of the bearing test piece 600 is fixedly connected with the test shaft 201 and the drive shaft 202, and then the first radial motor 301 and the second radial motor 302 are controlled to drive the corresponding screw 304 to rotate respectively. When the screw 304 rotates, it will drive the corresponding threaded sleeve 305 and the first mounting seat 101 to move, and the outer ring of the bearing test piece 600 is clamped and fixed by the movement of the first mounting seat 101. At this time, the radial loading system 300 and the axial loading system 400 can be used to radially and axially load the bearing test piece 600, so as to perform radial and axial static load limit tests on the bearing test piece 600.

[0065] When it is necessary to perform a dynamic load limit test on the bearing, on the basis of the static test, the driving motor 501 is turned on to drive the driving wheel 503 to rotate. During the rotation, the driving wheel 503 drives the driven wheel 504 to rotate through the timing belt 505. The driven wheel 504 will drive the driving shaft 202 to rotate, and the driving shaft 202 will drive the bearing test piece 600 to rotate. At this time, the radial and axial loading are performed on the bearing test piece 600 through the radial loading system 300 and the axial loading system 400, so as to perform radial and axial dynamic load limit tests on the bearing test piece 600.

[0066] When it is necessary to perform a special environmental load limit test on the bearing, on the basis of the dynamic test, by turning on the first delivery pump 7014 and the second delivery pump 7024, the temperature and corrosion of the bearing in a special working environment can be simulated through the temperature control module 702 and the corrosion module 701, thereby performing radial and axial special environmental load limit tests on the bearing test piece 600.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bearing load limit test device, characterized in that: The invention comprises a main body (100), wherein a first mounting seat (101) for mounting a bearing test piece (600) is fixedly connected to the main body (100), wherein the first mounting seat (101) is internally sealed and slidably connected to two clamping seats (102) radially arranged along the bearing test piece (600), wherein the two clamping seats (102) surround the outer side of the outer ring of the bearing test piece (600), and wherein a test shaft assembly (200) is rotatably connected to the main body (100), wherein the test shaft assembly (200) is inserted into the bearing On the inner side of the inner ring of the test piece (600), a radial loading system (300) and an axial loading system (400) are arranged on the main body (100), the radial loading system (300) is transmission-connected to the holder (102), the axial loading system (400) is transmission-connected to the test shaft assembly (200), the test shaft assembly (200) is transmission-connected to a driving mechanism (500), and an environmental simulation system (700) is arranged inside the main body (100) corresponding to the bearing test piece (600); The test shaft assembly (200) comprises a coaxially arranged test shaft (201) and a drive shaft (202); a bottom plate (103) is fixedly connected to the bottom of the main body (100); a second mounting seat (104) is fixedly mounted on the bottom plate (103); a first rotating seat (105) is slidably connected inside the second mounting seat (104); the test shaft (201) is rotatably connected to the first rotating seat (105); a first pressure sensor (106) is abuttedly connected between the first rotating seat (105) and the second mounting seat (104); a vibration sensor (107) is transmission-connected to the outer side surface of the test shaft (201); a locking device for locking the inner ring of the bearing test piece (600) is provided at one end of the test shaft (201) away from the first rotating seat (105) corresponding to the drive shaft (202); and the drive shaft (202) is transmission-connected to the axial loading system (400); The locking device comprises an installation cavity (203), wherein the installation cavity (203) is provided at one end of the test shaft (201) away from the first rotating seat (105), and a plurality of first sliding grooves (204) arranged symmetrically with respect to the center are provided on the outer side surface of the test shaft (201), and the first sliding grooves (204) penetrate into the interior of the installation cavity (203), and a slider (205) is slidably connected inside the first sliding groove (204), and a side surface of the slider (205) facing the interior of the installation cavity (203) is arranged as an inclined surface, and a frustum (206) is slidably connected inside the installation cavity (203) corresponding to the slider (205), and the frustum (206) is abuttedly connected to the drive shaft (202), and a locking ring (207) is threadedly connected to the outer side of the drive shaft (202), and the lower end surface of the locking ring (207) is abuttedly connected to the upper end of the inner ring of the bearing test piece (600); A spring sheet (208) is abuttedly connected between the slider (205) and the test shaft (201) so that the slider (205) automatically slides into the installation cavity (203) when no external force is applied; a first spring (209) is abuttedly connected between the cone (206) and the test shaft (201) so that the cone (206) slides out of the installation cavity (203); a second spring (210) is sleeved on the outer side of the test shaft (201); the lower end of the second spring (210) is fixedly connected to the outer side of the test shaft (201); the upper end of the second spring (210) is fixedly connected to a push ring (211); the push ring (211) is slidably connected to the outer side of the test shaft (201); the upper end surface of the push ring (211) is abuttedly connected to the lower end of the inner ring of the bearing test piece (600); The radial loading system (300) comprises a first radial motor (301) and a second radial motor (302), the first radial motor (301) and the second radial motor (302) being symmetrically fixedly mounted on the main body (100) at positions at both ends of the first mounting seat (101), the output shafts of the first radial motor (301) and the second radial motor (302) being fixedly connected with couplings (303), the couplings (303) being fixedly connected with a screw rod (304), the outer side of the screw rod (304) being threadedly connected with a threaded sleeve (305), the threaded sleeve (305) being slidably connected to the first mounting seat (101), one end of the threaded sleeve (305) away from the first radial motor (301) or the second radial motor (302) being respectively mounted on the holder (102), and a second pressure sensor (108) being abuttedly connected between the threaded sleeve (305) and the holder (102); The axial loading system (400) comprises a telescopic driving member (401), the telescopic driving member (401) being arranged along the axial direction of the driving shaft (202), the fixed end of the telescopic driving member (401) being fixedly mounted on the main body (100), the telescopic end of the telescopic driving member (401) being fixedly connected to a mounting plate (402), the driving shaft (202) being rotatably connected to the mounting plate (402), the driving mechanism (500) being mounted on the mounting plate (402), a plurality of vertically arranged guide rods (403) being fixedly connected to the main body (100), the mounting plate (402) being provided with guide holes (404) corresponding to the guide rods (403), and the guide rods (403) being slidably connected to the mounting plate (402) through the guide holes (404).

2. A bearing load limit testing device according to claim 1, characterized in that: The driving mechanism (500) comprises a driving motor (501), a gearbox body (502) is fixedly mounted on the mounting plate (402), the driving motor (501) is fixedly mounted on the gearbox body (502), an output shaft of the driving motor (501) passes through the outer side surface of the gearbox body (502) and is fixedly connected to a driving wheel (503), a driven wheel (504) is mounted on the driving shaft (202) corresponding to the driving wheel (503), and a timing belt (505) is transmission-connected between the driving wheel (503) and the driven wheel (504).

3. A bearing load limit testing device according to any one of claims 1-2, characterized in that: The environmental simulation system (700) comprises a corrosion module (701), wherein the corrosion module (701) comprises a liquid storage tank (7011), wherein the liquid storage tank (7011) stores a corrosive liquid, wherein a first input pipe (7012) and a first output pipe (7013) are respectively and sealedly fixedly connected to the liquid storage tank (7011), wherein an end of the first output pipe (7013) away from the liquid storage tank (7011) is sealedly connected to a first delivery pump (7014), wherein the first delivery pump (7014) is away from the liquid storage tank (7011). One end of the first output pipe (7013) is sealedly connected to a spray pipe (7015), and one end of the spray pipe (7015) away from the first delivery pump (7014) is sealed and fixedly connected to a nozzle (7016), and the nozzle (7016) faces the lower end of the bearing test piece (600). A receiving plate (7017) is installed on the main body (100) corresponding to the lower end of the bearing test piece (600), and the receiving plate (7017) is sealedly connected to the first input pipe (7012).

4. A bearing load limit testing device according to any one of claims 1-2, characterized in that: The environmental simulation system (700) comprises a temperature control module (702), the temperature control module (702) comprising a temperature control box (7021), the temperature control box (7021) being filled with a temperature control medium, the temperature control box (7021) being provided with a temperature controller for adjusting the temperature of the temperature control medium, the temperature control box (7021) being respectively and sealed and fixedly connected with a second input pipe (7022) and a second output pipe (7023), and the second output pipe (7023) being sealed and fixedly connected with an end thereof away from the temperature control box (7021) and a second delivery pump (7024). ), the second delivery pump (7024) is sealedly connected to a connecting pipe (7025) at one end away from the second output pipe (7023), a temperature control circulation channel (800) is opened inside the first mounting seat (101) and the clamping seat (102) corresponding to the connecting pipe (7025) and the second input pipe (7022), a temperature sensor (109) is embedded in the clamping seat (102), and the connecting pipe (7025) and the second input pipe (7022) are respectively sealedly connected to the two ends of the temperature control circulation channel (800).

5. A bearing load limit testing device according to claim 4, characterized in that: The temperature control circulation channel (800) comprises an input channel (801), a connecting channel (802), and an output channel (803); the input channel (801) and the output channel (803) are symmetrically arranged on one side of the first mounting seat (101); the connecting channel (802) is symmetrically arranged on the other side of the first mounting seat (101); an arc-shaped channel (804) is arranged inside the holder (102) corresponding to the bearing test piece (600); one arc-shaped channel (804) on the holder (102) can be communicated with the input channel (801) and the connecting channel (802); and another arc-shaped channel (804) on the holder (102) can be communicated with the output channel (803) and the connecting channel (802).

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