A friction and wear test detection device and method for cemented carbide radial bearings

Abstract

The invention relates to the technical field of friction and wear test detection, and proposes a friction and wear test detection device and method for a cemented carbide radial bearing. During detection, the clamping point of a bearing part is used as a fixed point, and the end of a center column away from the bearing part is used as a detection point. The vibration amplitude of the bearing part can be amplified to facilitate the detection of the bearing part after wear. The detection sensitivity is better and the use is more reliable. In the process of the bearing part wear test, the change of the electromagnetic field is used to form the adjustment and control of the load. The form of applying the load with the matching center column can better simulate the use environment of the bearing part, and the control of the load change is more sensitive and the practicality is better. The invention comprises a center column and a bearing part, and also comprises a main structure and a clamping structure. The main structure comprises a bottom mounting frame, and a support ring frame is fixedly connected to the bottom mounting frame. A drive motor is installed in the support ring frame through an elastic centering component. The output shaft of the drive motor is transmission-connected to the bottom end of the center column.

Description

Technical Field

[0001] The invention relates to the technical field of friction and wear test detection, and in particular to a friction and wear test detection device and method for a cemented carbide radial bearing. Background Art

[0002] As we all know, radial bearing wear may lead to a series of problems such as increased rotor shaft displacement, decreased equipment operating efficiency and increased operating safety risks. Therefore, in order to increase the service life of bearings, alloy materials are now introduced into the market to prepare cemented carbide radial bearings. In order to evaluate the service life of cemented carbide radial bearings, we propose a friction and wear test detection device and method for cemented carbide radial bearings.

[0003] After searching, the Chinese patent publication number CN218098725U discloses a multi-stage thrust bearing assembly wear test device, which is roughly described as including a test bench, a rotatable tray is arranged on the upper surface of the test bench, and the tray is torque-connected to a vertical center column for sleeve-mounting the multi-stage thrust bearing assembly to be tested on the center column. It also includes a force-applying mechanism for applying downward pressure to the multi-stage thrust bearing assembly. The tray is connected to a driving mechanism for driving it to rotate. When it is used, multiple thrust bearings are first installed on the center column step by step so that their lower ends are tightly pressed against the tray, the oil cylinder is started to drive the pressing sleeve to press against the upper ends of multiple thrust bearings, and then the motor is started. The tray is connected to the center column to rotate so that the multiple thrust bearings rotate under the oil cylinder. After working for a certain period of time, the machine is stopped to check the wear of the thrust bearings. The Chinese patent publication number is CN115754017A The patent discloses a bearing outer ring wear detection device, which is roughly described as including a main frame, a bearing end cover, an angle adjuster, a bolt-integrated ultrasonic probe and a claw. One side of the main frame is provided with multiple angle fixing holes, the bearing end cover is arranged at one end of the main frame, the angle adjuster is arranged on the outside of the main frame, the bolt-integrated ultrasonic probe is connected with the angle adjuster and the main frame, the claw is arranged inside the main frame and connected with the bolt-integrated ultrasonic probe. When in use, the bearing is placed inside the main frame, and the bolt-integrated ultrasonic probe is extended into the main frame through the connecting hole, the slide groove and the angle fixing hole respectively. When the angle is rotated to obtain multiple sets of bearing outer ring wear data, the bolt-integrated ultrasonic probe in the angle fixing hole is removed, and the angle adjuster is rotated. When the connecting hole is aligned with the angle fixing hole, the bolt-integrated ultrasonic probe is installed, and the angle can be adjusted to realize the simultaneous collection of multiple sets of data.

[0004] Although the above-mentioned existing technical solutions can all realize the wear test of bearings, the former one realizes the addition of load through the oil cylinder, and the load addition range and change are realized by the flow of hydraulic oil. Therefore, during the load addition process, the load strain flexibility is poor, and during the detection operation, the target bearing is directly detected. In actual situations, most bearings are not obviously worn, and the amplitude of the runout between the inner ring and the outer ring of the bearing is limited. Therefore, high-precision detection is required to realize the wear detection of the bearing, otherwise it is very easy to fail to detect the wear degree of the bearing, and the reliability of use needs to be further strengthened. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and method for testing friction and wear of cemented carbide radial bearings. During testing, the clamping point of the bearing member is used as a fixed point and the end of the center column away from the bearing member is used as a detection point. The vibration amplitude of the bearing member can be amplified to facilitate the detection of the bearing member after wear. The detection sensitivity is better and the use is more reliable. In the process of the bearing member wear test, the change of the electromagnetic field is used to form load adjustment and control. The form of applying load by the matching center column can better simulate the use environment of the bearing member, and the control of load change is more sensitive and more practical.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cemented carbide radial bearing friction and wear test detection device, comprising a center column and a bearing member, and also comprising a main structure and a clamping structure, wherein the main structure comprises a bottom mounting frame, a support ring frame is fixedly connected to the bottom mounting frame, a drive motor is installed in the support ring frame through an elastic centering component, the output shaft of the drive motor is transmission-connected to the bottom end of the center column, a laser transmitter is installed at the bottom end of the elastic centering component, an interlayer cavity is opened in the bottom mounting frame, a light receiving panel is installed in the interlayer cavity, and the light receiving panel is used to receive a laser beam emitted by the laser transmitter, The top of the support ring frame is fixedly connected to a support ring frame, a load electromagnet is installed outside the support ring frame, a load iron ring is fixedly connected to the center column, the load iron ring matches the load electromagnet, the clamping structure includes an outer ball ring frame, an installation ball cavity is opened in the support ring frame, the outer ball ring frame is located in the installation ball cavity, and a three-jaw outer chuck is installed on the outer ball ring frame, an inner support positioning assembly is installed on the top of the center column, the inner support positioning assembly is used to tighten the inner ring of the bearing component, the three-jaw outer chuck is used to clamp the outer ring of the bearing component, and a fixed position assembly matching the elastic centering assembly is installed on the bottom mounting frame.

[0007] Preferably, the elastic centering component includes a mounting core frame, the driving motor is mounted on the bottom end of the mounting core frame, a transfer hole is opened on the mounting core frame, the center column is rotatably connected in the transfer hole, a plurality of elastic springs are fixedly connected to the outside of the mounting core frame, the plurality of elastic springs are all fixedly connected in the support ring frame, the bottom end of the mounting core frame is fixedly connected to a bottom bracket, and the laser emitter is mounted at the bottom end of the bottom bracket.

[0008] Preferably, the mounting core frame is provided with a plurality of side planes, the plurality of side planes are fixedly connected with mounting circular plates via connecting bolts, the plurality of mounting circular plates are respectively fixedly connected with the plurality of elastic springs, the plurality of elastic springs are fixedly connected with external fixing frames, the plurality of external fixing frames are fixedly connected with the support ring frames, the plurality of support ring frames are provided with a plurality of side through openings, the plurality of side through openings are respectively matched with the plurality of elastic springs, the plurality of external fixing frames are provided with assembly holes, and the plurality of assembly holes are respectively used for assembly and installation of the plurality of connecting bolts.

[0009] Preferably, a center hole and a side through groove are formed at the top of the bottom mounting frame, a plurality of auxiliary rings are arranged in the center hole, the inner diameters of the plurality of auxiliary rings are all different, and the two side through grooves are both connected to the center hole.

[0010] Preferably, the internal support positioning assembly includes a shaft cylinder frame, which is fixedly connected to the top of the center column, and the shaft cylinder frame is threadedly connected to a synchronous screw, and the bottom end of the synchronous screw is rotatably connected to a driving frame, and a plurality of driving rods are hinged on the driving frame, and a plurality of the driving rods are hinged with internal support parts, and a plurality of the internal support parts are hinged with linkage rods, and a plurality of the linkage rods are hinged to the shaft cylinder frame.

[0011] Preferably, the inner support members are each provided with an arcuate raised surface on the outside, the inner support members are each provided with two hinged seats, the linkage rods and the driving rods are each provided with a rotating shaft, and the rotating shafts are respectively rotatably connected to the hinged seats.

[0012] Preferably, the fixed position component includes an inner cone ring, an outer cone slope is arranged outside the mounting core frame, the inner cone ring matches the outer cone slope, the bottom end of the inner cone ring is fixedly connected to two guide columns, the two guide columns are slidably connected to guide cylinders, the two guide cylinders are fixedly connected to the top of the bottom mounting frame, the two guide cylinders are fixedly connected to a lifting spring, the tops of the two lifting springs are respectively fixedly connected to the bottom ends of the two guide columns, two adjusting electromagnets are installed in the bottom mounting frame, the two adjusting electromagnets are equipped with auxiliary permanent magnets, and the two auxiliary permanent magnets are respectively installed in the two guide columns.

[0013] Preferably, the support ring frame is provided with a plurality of arc-shaped openings, and an arc-shaped protective plate is slidably connected in each of the plurality of arc-shaped openings, and a limiting synchronization ring is fixedly connected to the bottom ends of the plurality of arc-shaped protective plates, and the limiting synchronization ring and the support ring frame are rotatably connected to an adapter, and a double limiting spring is connected between two of the adapters, and a protective ring is fixedly connected to the top ends of the plurality of arc-shaped protective plates.

[0014] Preferably, a guide rib rod is fixedly connected to the bottom end of the driving frame, a guide rib groove is provided at the top end of the central column, the guide rib rod is slidably connected in the guide rib groove, and fixed mounting ears are provided at the four corners of the bottom mounting frame.

[0015] A test method for a friction and wear test detection device for a cemented carbide radial bearing comprises the following steps:

[0016] S1. Before use, first install a power supply and a central control computer for the drive motor, laser transmitter, light receiving panel, load electromagnet and the adjustment electromagnet in the fixed position component. The central control computer can realize the operation control of the drive motor, laser transmitter, light receiving panel, load electromagnet and the adjustment electromagnet in the fixed position component;

[0017] S2. When a wear test is required on a bearing component, first adjust the three-jaw outer chuck to open, then place the corresponding bearing component in the three-jaw outer chuck, and during the placement of the bearing component, control the inner support positioning assembly to be inserted relative to the inner hole of the bearing component until the inner convex plate in the three-jaw outer chuck supports the bearing component, then adjust the three-jaw outer chuck to clamp and position the outer ring of the bearing component, and then adjust the inner support positioning assembly to tighten the inner ring of the bearing component, so as to achieve the compression positioning of the bearing component and the relative positioning between the bearing component and the center column;

[0018] S3, keep the fixed position component in contact with the elastic centering component, so that one end of the center column is supported by the bearing component, and the other end of the center column is supported by the fixed position component, start the drive motor, and drive the motor to realize the rotation drive of the center column. The rotation of the center column realizes the relative rotation between the inner ring and the outer ring of the bearing component. When the bearing component needs to be subjected to a wear test, turn on the power supply of the load electromagnet, so that the load electromagnet is energized to generate an electromagnetic field, and the load addition of the center column is formed by the relative magnetic attraction between the electromagnetic field and the load iron ring, and the strength of the electromagnetic field is controlled by controlling the magnitude of the current of the load electromagnet, so as to realize the magnitude control of the load borne by the center column and the simulation formation of the variable load;

[0019] S4. Maintain the load of the center column and the running state of the driving motor, so that the inner ring and the outer ring of the bearing component maintain relative rotational motion, so as to simulate the actual working state of the bearing component and form a friction and wear test of the bearing component. After the test is completed, the center column is controlled to be in a uniform rotation state, and the fixed position component is controlled to be relatively far away from the elastic centering component. After that, the fixed restriction effect at the bottom of the center column fails. After that, when the inner ring and the outer ring of the bearing component are in the process of relative rotation, if the rotation jump between the inner ring and the outer ring is small, the rotation swing of the center column is also small, otherwise the rotation swing of the center column is also large;

[0020] S5. During the rotation and swinging process of the center column, the bottom end of the center column is fixed and restricted at a lower level, so its rotation and swinging amount will be greater. By judging the rotation and swinging condition of the bottom end of the center column, it is more convenient to detect the beating of the bearing. During the rotation and swinging process, the bottom end of the center column will drive the laser emitter to swing synchronously. The swinging of the laser emitter will cause the laser beam it emits to swing, and the position of the laser spot received by the light receiving panel will also change. The swinging amplitude of the center column is judged based on the changing amplitude between the multiple laser spots received by the light receiving panel, and finally the wear detection of the bearing is achieved.

[0021] Compared with the prior art, the present invention provides a device and method for testing friction and wear of cemented carbide radial bearings, which have the following beneficial effects:

[0022] (1) In the present invention, the external clamping structure is formed by the supporting bearing component through the clamping structure design, so as to facilitate the installation and positioning of the bracket during the bearing component detection process, and provide auxiliary positioning for the subsequent wear test and detection operation of the bearing component.

[0023] (2) In the present invention, a detection functional component matching the bearing component is formed through the design of the main structure. During detection, the clamping point of the bearing component is used as a fixed point and the end of the center column away from the bearing component is used as a detection point. The vibration amplitude of the bearing component can be amplified to facilitate the detection of the bearing component after wear, with better detection sensitivity and more reliable use.

[0024] (3) In the present invention, by providing a light receiving panel and a laser transmitter, it is convenient to determine the detection parameters and quantify the detection data during the bearing component detection process, and the wear degree of the bearing component can be better determined.

[0025] (4) In the present invention, through the design of the fixed position component, the end of the center column away from the bearing member can be matched to form an auxiliary access support limit and the disappearance of the support limit. In the access support state, the fixed position component can match the bearing member to form a two-point support for the center column, so as to facilitate the simulation of the working state of the bearing member, and then facilitate the addition of subsequent loads. In the state where the support limit is retreated and away, the rotation restriction on the bottom of the center column can be reduced, thereby ultimately reducing the detection impact on the bearing member.

[0026] (5) In the present invention, by matching the load iron ring and the load electromagnet, when the load electromagnet is energized, the electromagnetic field generated by the load electromagnet can match the load iron ring to form magnetic attraction, so as to simulate the addition of load to the center column, and by controlling the magnitude of the current flowing through the load electromagnet, the control of different loads borne by the center column can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0029] Figure 3 It is a schematic diagram of the exploded three-dimensional structure of the support ring frame, the outer ball ring frame and the three-jaw outer chuck of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the bottom mounting frame, the supporting ring frame and the guide tube of the present invention;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the arc-shaped protection plate, the limit synchronization ring and the protection ring of the present invention;

[0032] Figure 6 It is a partially cutaway three-dimensional structural schematic diagram of the shaft cylinder frame, synchronous screw and driving rod of the present invention;

[0033] Figure 7 It is a partially exploded three-dimensional structural schematic diagram of the cooperation of the center column, the shaft cylinder frame and the synchronous screw etc. of the present invention;

[0034] Figure 8 It is a schematic diagram of the overall three-dimensional structure of the present invention when viewed from above;

[0035] Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at D in the middle;

[0036] Fig.10 For the present invention Figure 8 A schematic diagram of the local enlarged structure at E in the middle;

[0037] Fig.11 For the present invention Figure 8 A schematic diagram of the local enlarged structure at F in the middle;

[0038] Fig.12 It is a bottom-up schematic diagram of the three-dimensional structure of the supporting ring frame, the driving motor and the laser transmitter of the present invention;

[0039] Fig.13 It is a schematic diagram of the three-dimensional structure of the inner cone ring, the guide column and the lifting spring of the present invention;

[0040] Fig.14 It is a bottom-up three-dimensional structural schematic diagram of the outer ball annular frame and the three-jaw outer chuck of the present invention;

[0041] Fig.15 It is a bottom-up schematic diagram of the three-dimensional structure of the arc-shaped protection plate, the limiting synchronization ring and the protection ring of the present invention.

[0042] In the figure: 1, center column; 2, bearing member; 3, bottom mounting frame; 4, support ring frame; 5, drive motor; 6, laser transmitter; 7, sandwich cavity; 8, light receiving panel; 9, support ring frame; 10, load electromagnet; 11, load iron ring; 12, outer ball ring frame; 13, three-jaw outer chuck; 14, mounting core frame; 15, transfer hole; 16, elastic spring; 17, bottom bracket; 18, mounting circular plate; 19, external fixing frame; 20, side through port; 21, assembly hole; 22, center hole; 23, side through slot; 24, auxiliary ring; 25, shaft Cylinder frame; 26. Synchronous screw; 27. Drive frame; 28. Drive rod; 29. ​​Inner support; 30. Linkage rod; 31. Arc-shaped raised surface; 32. Articulated seat; 33. Rotating shaft; 34. Inner cone mouth ring; 35. Outer cone mouth slope; 36. Guide column; 37. Guide cylinder; 38. Lifting spring; 39. Adjusting electromagnet; 40. Auxiliary permanent magnet; 41. Arc-shaped opening; 42. Arc-shaped protective plate; 43. Limiting synchronous ring; 44. Adapter; 45. Double limit spring; 46. Protective ring; 47. Guide edge rod; 48. Fixed mounting ear. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] For examples, see Figure 1-Figure 15A friction and wear test detection device for a cemented carbide radial bearing comprises a center column 1 and a bearing member 2, and also comprises a main structure and a clamping structure. The main structure comprises a bottom mounting frame 3, a support ring frame 4 is fixedly connected to the bottom mounting frame 3, a driving motor 5 is installed in the support ring frame 4 through an elastic centering component, the elastic centering component comprises a mounting core frame 14, the driving motor 5 is installed at the bottom end of the mounting core frame 14, a transfer hole 15 is provided on the mounting core frame 14, the center column 1 is rotatably connected in the transfer hole 15, a plurality of elastic springs 16 are fixedly connected to the outside of the mounting core frame 14, and the plurality of elastic springs 16 are fixedly connected to the support ring frame 4, a plurality of side planes are arranged on the mounting core frame 14, a plurality of side planes are fixedly connected to mounting circular plates 18 through connecting bolts, and a plurality of mounting The mounting circular plate 18 is respectively fixedly connected to a plurality of elastic springs 16, and the plurality of elastic springs 16 are all fixedly connected to an external fixing frame 19, and the plurality of external fixing frames 19 are all fixedly connected to the support ring frame 4, and a plurality of side through holes 20 are provided on the plurality of support ring frames 4, and the plurality of side through holes 20 are respectively matched with the plurality of elastic springs 16, and a plurality of external fixing frames 19 are respectively provided with assembly holes 21, and the plurality of assembly holes 21 are respectively used for the assembly and installation of a plurality of connecting bolts, and the output shaft of the driving motor 5 is transmission-connected to the bottom end of the center column 1, and a laser emitter 6 is installed at the bottom end of the elastic centering assembly, and a bottom bracket 17 is fixedly connected to the bottom end of the mounting core frame 14, and the laser emitter 6 is installed at the bottom end of the bottom bracket 17, and a sandwich cavity 7 is provided in the bottom mounting frame 3, and a light receiving device is installed in the sandwich cavity 7 Panel 8, the light receiving panel 8 is used to receive the laser beam emitted by the laser emitter 6. The light receiving panel 8 and the laser emitter 6 are equipped to facilitate the determination of detection parameters and quantification of detection data during the detection process of the bearing component 2, and can better judge the degree of wear of the bearing component 2. The top of the support ring frame 4 is fixedly connected with a support ring frame 9. Through the design of the main structure, a detection functional component matching the bearing component 2 is formed. During the detection, the clamping point of the bearing component 2 is used as a fixed point and the end of the center column 1 away from the bearing component 2 is used as the detection point. The beating amplitude of the bearing component 2 can be amplified to facilitate the detection of the bearing component 2 after wear. The detection sensitivity is better and the use is more reliable. A load electromagnet 10 is installed outside the support ring frame 9, and a load iron ring 1 is fixedly connected to the center column 1 1. The load iron ring 11 is matched with the load electromagnet 10. Through the matching of the load iron ring 11 and the load electromagnet 10, when the load electromagnet 10 is energized, the electromagnetic field generated by the load electromagnet 10 can match the load iron ring 11 to form magnetic attraction, so as to simulate the addition of load to the central column 1, and by controlling the magnitude of the current of the load electromagnet 10, the control of different loads borne by the central column 1 can be achieved. The clamping structure includes an outer ball ring frame 12, a mounting ball cavity is opened in the support ring frame 9, the outer ball ring frame 12 is located in the mounting ball cavity, and a three-claw outer chuck 13 is installed on the outer ball ring frame 12. Through the design of the clamping structure, the outer clamping structure is formed by matching the bearing component 2 to facilitate the bracket installation and positioning during the detection process of the bearing component 2.Provide auxiliary positioning for subsequent wear test and inspection of bearing 2.

[0045] It should be further explained that an internal support positioning assembly is installed at the top of the center column 1, and the internal support positioning assembly includes a shaft cylinder frame 25, the shaft cylinder frame 25 is fixedly connected to the top of the center column 1, the shaft cylinder frame 25 is internally threaded with a synchronous screw 26, and the bottom end of the synchronous screw 26 is rotatably connected to a drive frame 27, and a plurality of drive rods 28 are hinged on the drive frame 27, and the plurality of drive rods 28 are hinged with internal support members 29, and the plurality of internal support members 29 are hinged with linkage rods 30, and the plurality of linkage rods 30 are hinged to the shaft cylinder frame 25, and the plurality of internal support members 29 are provided with arc-shaped convex surfaces 31 on the outside, and the plurality of internal support members 29 are provided with two hinged seats 32, and the plurality of linkage rods 30 and the plurality of drive rods 28 are provided with rotating shafts 33, and the plurality of rotating shafts 33 are respectively connected to the plurality of hinged seats 32. Rotational connection, the inner support positioning assembly is used to tighten the inner ring of the bearing member 2, the three-jaw outer chuck 13 is used to clamp the outer ring of the bearing member 2, and a fixed position assembly matching the elastic centering assembly is installed on the bottom mounting frame 3, and the fixed position assembly includes an inner cone ring 34, and an outer cone slope 35 is arranged outside the mounting core frame 14, and the inner cone ring 34 matches the outer cone slope 35. The bottom end of the inner cone ring 34 is fixedly connected to two guide columns 36, and the two guide columns 36 are both slidably connected to guide cylinders 37. The two guide cylinders 37 are fixedly connected to the top of the bottom mounting frame 3, and the two guide cylinders 37 are fixedly connected to the inside of the two guide cylinders 37. The top ends of the two lift springs 38 are respectively fixedly connected to the bottom ends of the two guide columns 36, and two adjusting electromagnets 39 are installed in the bottom mounting frame 3. The two adjusting electromagnets 39 are both equipped with auxiliary permanent magnets 40, and the two auxiliary permanent magnets 40 are respectively installed in the two guide columns 36. Through the design of the fixed position component, it can match the end of the center column 1 away from the bearing member 2 to form an auxiliary access support limit and the disappearance of the support limit. In the state of the access support limit, the fixed position component can match the bearing member 2 to form a two-point support for the center column 1, so as to facilitate the simulation of the working state of the bearing member 2, and then facilitate the addition of subsequent loads. In the state after the support limit disappears, it can reduce the rotation restriction on the bottom of the center column 1, and finally reduce the detection impact on the bearing member 2. The top of the bottom mounting frame 3 is provided with a center hole 22 and a side through groove 23, and a plurality of auxiliary rings 24 are arranged in the center hole 22. The inner diameters of the auxiliary rings 24 are all different. The two side through grooves 23 are both connected to the center hole 22. The center hole 22 provides a passage space for the laser beam emitted by the laser emitter 6. When it is inconvenient or even impossible to clearly judge the degree of wear of the bearing component 2 through the light spot received on the light-receiving panel 8, the auxiliary ring 24 is set to form a reduced diameter shielding of the center hole 22, so that the passage space of the laser beam in the center hole 22 is changed. Thereafter, when the laser beam can stably irradiate the light-receiving panel 8 through the inner hole of the corresponding auxiliary ring 24, it means that the runout of the bearing component 2 after wear corresponds to the inner hole size of the auxiliary ring 24. If the laser beam cannot pass through or intermittently passes through the inner hole of the auxiliary ring 24, it means that the swing amplitude of the laser beam exceeds the size of the auxiliary ring 24.Replace the auxiliary ring 24 with a larger inner hole and re-test until the laser beam can pass through the inner hole of the corresponding auxiliary ring 24 and the light spot of the laser beam is continuously received by the light receiving panel 8. In this state, the inner hole size of the corresponding auxiliary ring 24 is the corresponding size of the beating after the bearing 2 is worn, so as to facilitate the judgment of the wear condition of the bearing 2. A plurality of arc-shaped openings 41 are provided on the support ring frame 9, and arc-shaped protective plates 42 are slidably connected in the plurality of arc-shaped openings 41. The bottom ends of the plurality of arc-shaped protective plates 42 are fixedly connected to the limit synchronization ring 43, and the limit synchronization ring 4 3 and the support ring frame 9 are both rotatably connected with an adapter 44, and a double limit spring 45 is connected between the two adapters 44. The top of the multiple arc-shaped protective plates 42 is fixedly connected with a protective ring 46 to improve the protection effect of the detection link of the bearing member 2. The bottom end of the driving frame 27 is fixedly connected with a guide rib rod 47, and the top of the central column 1 is provided with a guide rib groove, and the guide rib rod 47 is slidably connected in the guide rib groove. The four corners of the bottom mounting frame 3 are provided with fixed mounting ears 48, which facilitate the connection and fixation of the bottom mounting frame 3 relative to the corresponding placement and installation location. ,

[0046] The three-jaw outer chuck 13, drive motor 5, laser emitter 6, light receiving panel 8, load electromagnet 10 and adjustment electromagnet 39 in this embodiment are all conventional equipment purchased on the market and well known to those skilled in the art. In the present invention, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged according to the requirements of their instruction manual and will not be described in detail here.

[0047] In summary, the working principle of the cemented carbide radial bearing friction and wear test detection device and method is that before use, a power supply and a central control computer are first installed to match the drive motor 5, the laser emitter 6, the light receiving panel 8, the load electromagnet 10 and the adjustment electromagnet 39 in the fixed position component. The operation of the drive motor 5, the laser emitter 6, the light receiving panel 8, the load electromagnet 10 and the adjustment electromagnet 39 in the fixed position component can be controlled by the central control computer, and the central control computer reads and calculates the spot signal of the laser beam received by the light receiving panel 8. When it is necessary to perform a wear test on the bearing component 2, first adjust the three-jaw outer chuck 13 to open, and then place the corresponding bearing component 2 in the three-jaw outer chuck 13. The bearing component 2 is placed During the process, the inner support positioning assembly is controlled to be inserted relative to the inner hole of the bearing component 2 until the inner convex plate in the three-jaw outer chuck 13 supports the bearing component 2, and then the three-jaw outer chuck 13 is adjusted to clamp and position the outer ring of the bearing component 2, and then the inner ring of the bearing component 2 is tightened by adjusting the inner support positioning assembly to achieve the compression positioning of the bearing component 2 and the relative positioning between the bearing component 2 and the center column 1. The adjustment process of adjusting the inner support positioning assembly to tighten the inner ring of the bearing component 2 is to adjust the synchronous screw 26 relative to the shaft tube frame 25 so that the drive frame 27 forms a relative height change in the shaft tube frame 25. The height-changing drive frame 27 will drive multiple drive rods 28 to move in position, and the position movement of multiple drive rods 28 will respectively drive multiple The inner support member 29 forms a position movement. With the auxiliary action of multiple linkage rods 30, the area formed by the multiple inner support members 29 will increase, so as to form an inner support positioning with the inner ring of the matching bearing member 2, and keep the fixed position component in contact with the elastic centering component, so that one end of the center column 1 is supported by the bearing member 2, and the other end of the center column 1 is supported by the fixed position component, that is, the adjustment electromagnet 39 is in a power-off state, and no electromagnetic field is generated to act on the auxiliary permanent magnet 40. Under the elastic action of the lifting spring 38, the inner cone mouth ring 34 is controlled to form a mutual contact and tightness with respect to the outer cone mouth slope surface 35, and the drive motor 5 is started. The drive motor 5 runs to realize the rotation drive of the center column 1, and the rotation of the center column 1 realizes the relative rotation between the inner ring and the outer ring of the bearing member 2. Since the relative lubricity between the inner ring and the outer ring of the bearing component 2 is good, the driving force required to overcome the friction between the inner ring and the outer ring of the bearing component 2 is small, and there is a certain relative friction between the outer ball ring frame 12 and the mounting ball cavity, so the inner ring and the outer ring of the bearing component 2 can be driven relative to each other. In order to ensure the realization of the relative rotation between the inner ring and the outer ring of the bearing component 2 and the safety of the test, the rotation speed of the center column 1 needs to be slowly accelerated until it reaches the simulated operating speed. When the bearing component 2 needs to be subjected to a wear test, the power supply of the load electromagnet 10 is turned on, so that the load electromagnet 10 is energized to generate an electromagnetic field. Through the relative magnetic attraction between the electromagnetic field and the load iron ring 11, the load addition of the center column 1 is formed.And by controlling the magnitude of the current flowing through the load electromagnet 10, the strength of the electromagnetic field can be controlled, so as to control the magnitude of the load borne by the central column 1 and simulate the formation of variable loads.

[0048] Furthermore, the load of the center column 1 and the operating state of the drive motor 5 are maintained, so that the inner ring and the outer ring of the bearing component 2 maintain relative rotational motion, so as to simulate the actual working state of the bearing component 2 and form a friction and wear test of the bearing component 2. After the test is completed, the center column 1 is controlled to be in a uniform rotation state, and the fixed position component is controlled to be relatively far away from the elastic centering component. Thereafter, the fixed restriction effect at the bottom of the center column 1 fails, that is, the power supply of the adjusting electromagnet 39 is turned on, and the mutual magnetic attraction effect is formed between the adjusting electromagnet 39 and the auxiliary permanent magnet 40, and Under the action of the magnetic attraction between them, the compression of the lifting spring 38 is realized, so that the inner cone mouth ring 34 is separated from the outer cone mouth slope surface 35. In this state, the rotation limiting effect of the inner cone mouth ring 34 on the center column 1 is invalid, and the outer ball ring frame 12 is arranged in the mounting ball cavity, so the relative freedom limit between the two is small. Later, when the inner ring and the outer ring of the bearing member 2 are in the process of relative rotation, if the rotation jump between the inner ring and the outer ring is small, the rotation swing of the center column 1 is also small, otherwise the rotation swing of the center column 1 is also large, and the center column 1 is in the process of rotation and swing. Since the bottom end of the center column 1 is fixed and restricted at a lower position, its rotation and swing amount will be greater. By judging the rotation and swing of the bottom of the center column 1, it is more convenient to detect the vibration of the bearing 2. The bottom of the center column 1 will drive the laser emitter 6 to swing synchronously during the rotation and swing. The swing of the laser emitter 6 will cause the laser beam it emits to swing, causing the position of the laser spot received by the light receiving panel 8 to change. According to the change amplitude between the multiple laser spots received by the light receiving panel 8, the swing amplitude of the center column 1 is judged, and finally the wear of the bearing 2 is detected. It is detected that when the magnetic attraction applied by the load electromagnet 10 to the load iron ring 11 causes the load of the central column 1 to be too large, so that the inner cone mouth ring 34 forms a mutual contact and pressure relative to the outer cone mouth slope 35 and cannot simply rely on the lifting spring 38 to form support, by connecting the current of the adjusting electromagnet 39 and changing the electromagnetic field direction of the adjusting electromagnet 39, a mutually repulsive force is generated between the adjusting electromagnet 39 and the auxiliary permanent magnet 40, so as to assist the lifting spring 38 to assist in improving the relative pressure of the inner cone mouth ring 34 relative to the outer cone mouth slope 35, thereby ensuring effective support for the central column 1.

[0049] Furthermore, before the bearing component 2 is tested, the balance debugging and testing of the overall structure composed of the center column 1, the drive motor 5, the mounting core frame 14, the bottom bracket 17 and the laser emitter 6 should be carried out. During debugging, the three-jaw outer chuck 13 is controlled to match the multiple internal support components 29 to form internal and external clamping and positioning. Since the three-jaw outer chuck 13 has a certain degree of concentricity for the clamped parts in the clamping state, it also has a certain degree of concentricity when clamping relative to the bearing component 2. Similarly, when the three-jaw outer chuck 13 forms a matching clamping with the multiple internal support components 29, it also has a certain degree of concentricity with the center column 1. In this state, the inner cone mouth ring 34 is kept in a tight limit state relative to the outer cone mouth slope 35, so that the center column 1 has two-point support at the upper and lower points, and then the drive motor 5 is controlled to work so that the center column 1 is in a uniform rotation state. Thereafter, the inner cone mouth ring 34 is controlled relative to When the tight limit state of the outer cone slope 35 fails, that is, the fixed support at the bottom of the center column 1 disappears, in this state, the rotation balance detection of the overall structure composed of the center column 1, the drive motor 5, the mounting core frame 14, the bottom bracket 17 and the laser emitter 6 is realized through the relative action between the laser emitter 6 and the light receiving panel 8. If the balance of the overall structure is poor, it is necessary to increase the counterweight to improve its rotation balance to avoid the introduction of errors in the detection link of the bearing component 2 to ensure the detection accuracy of the bearing component 2. Similarly, during the use of the present cemented carbide radial bearing friction and wear test and detection device, the overall structure composed of the center column 1, the drive motor 5, the mounting core frame 14, the bottom bracket 17 and the laser emitter 6 should also be periodically debugged and tested for balance to eliminate the errors formed by the use of the equipment and finally achieve the calibration of the equipment.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A friction and wear test detection device for a cemented carbide radial bearing, comprising a center column and a bearing member, characterized in that: It also includes a main structure and a clamping structure, wherein the main structure includes a bottom mounting frame, the bottom mounting frame is fixedly connected to a support ring frame, a driving motor is installed in the support ring frame through an elastic centering component, the output shaft of the driving motor is transmission-connected to the bottom end of the center column, a laser transmitter is installed at the bottom end of the elastic centering component, an interlayer cavity is opened in the bottom mounting frame, a light receiving panel is installed in the interlayer cavity, and the light receiving panel is used to receive the laser beam emitted by the laser transmitter, the top end of the support ring frame is fixedly connected to a support ring frame, and a A load electromagnet, a load iron ring is fixedly connected to the center column, the load iron ring matches the load electromagnet, the clamping structure includes an outer ball ring frame, a mounting ball cavity is opened in the support ring frame, the outer ball ring frame is located in the mounting ball cavity, and a three-jaw outer chuck is installed on the outer ball ring frame, an inner support positioning assembly is installed on the top of the center column, the inner support positioning assembly is used to tighten the inner ring of the bearing component, the three-jaw outer chuck is used to clamp the outer ring of the bearing component, and a fixed position assembly matching the elastic centering assembly is installed on the bottom mounting frame; The elastic centering component includes a mounting core frame, the driving motor is mounted on the bottom end of the mounting core frame, a transfer hole is provided on the mounting core frame, the center column is rotatably connected in the transfer hole, a plurality of elastic springs are fixedly connected to the outside of the mounting core frame, the plurality of elastic springs are fixedly connected to the support ring frame, the bottom end of the mounting core frame is fixedly connected to a bottom bracket, the laser transmitter is mounted on the bottom end of the bottom bracket, the fixed position component includes an inner cone mouth ring, an outer cone mouth slope is provided outside the mounting core frame, the inner cone mouth ring matches the outer cone mouth slope, the bottom end of the inner cone mouth ring is fixedly connected to two guide columns, the two guide columns are slidably connected with guide cylinders, the two guide cylinders are fixedly connected to the top end of the bottom mounting frame, the two guide cylinders are fixedly connected with jacking springs, the top ends of the two jacking springs are respectively fixedly connected to the bottom ends of the two guide columns, two adjusting electromagnets are installed in the bottom mounting frame, the two adjusting electromagnets are equipped with auxiliary permanent magnets, and the two auxiliary permanent magnets are respectively installed in the two guide columns.

2. A friction and wear test detection device for cemented carbide radial bearings according to claim 1, characterized in that: The mounting core frame is provided with a plurality of side planes, and the plurality of side planes are fixedly connected with mounting circular plates by connecting bolts, and the plurality of mounting circular plates are respectively fixedly connected with the plurality of elastic springs, and the plurality of elastic springs are fixedly connected with external fixing frames, and the plurality of external fixing frames are fixedly connected with the support ring frames, and the plurality of support ring frames are provided with a plurality of side through openings, and the plurality of side through openings are respectively matched with the plurality of elastic springs, and the plurality of external fixing frames are provided with assembly holes, and the plurality of assembly holes are respectively used for assembly and installation of the plurality of connecting bolts.

3. A friction and wear test detection device for cemented carbide radial bearings according to claim 2, characterized in that: A center hole and a side through slot are formed at the top of the bottom mounting frame. A plurality of auxiliary rings are arranged in the center hole. The inner diameters of the plurality of auxiliary rings are all different. Both of the two side through slots are connected to the center hole.

4. A friction and wear test detection device for cemented carbide radial bearings according to claim 3, characterized in that: The internal support positioning assembly includes a shaft cylinder frame, which is fixedly connected to the top of the center column, and a synchronous screw is connected to the internal thread of the shaft cylinder frame. The bottom end of the synchronous screw is rotatably connected to a driving frame, and a plurality of driving rods are hinged on the driving frame, and a plurality of the driving rods are hinged with internal support parts, and a plurality of the internal support parts are hinged with linkage rods, and a plurality of the linkage rods are hinged to the shaft cylinder frame.

5. A friction and wear test detection device for cemented carbide radial bearings according to claim 4, characterized in that: The inner support members are each provided with an arc-shaped raised surface on the outside, the inner support members are each provided with two hinged seats, the linkage rods and the driving rods are each provided with a rotating shaft, and the rotating shafts are respectively rotatably connected to the hinged seats.

6. A friction and wear test detection device for cemented carbide radial bearings according to claim 5, characterized in that: The support ring frame is provided with a plurality of arc-shaped openings, and arc-shaped protective plates are slidably connected in the plurality of arc-shaped openings, and the bottom ends of the plurality of arc-shaped protective plates are fixedly connected with a limit synchronization ring, and the limit synchronization ring and the support ring frame are rotatably connected with an adapter, and a double limit spring is connected between two of the adapters, and the top ends of the plurality of arc-shaped protective plates are fixedly connected with a protective ring.

7. A friction and wear test detection device for cemented carbide radial bearings according to claim 6, characterized in that: The bottom end of the driving frame is fixedly connected with a guide rib rod, the top end of the central column is provided with a guide rib groove, the guide rib rod is slidably connected in the guide rib groove, and fixed mounting ears are arranged at the four corners of the bottom mounting frame.

8. A test method for a friction and wear test device for a cemented carbide radial bearing, characterized in that: A friction and wear test detection device for a cemented carbide radial bearing according to any one of claims 1 to 7 is used, comprising the following steps: S1. Before use, first install the power supply and central control computer for the drive motor, laser transmitter, light receiving panel, load electromagnet and fixed position components. The central control computer can realize the operation control of the drive motor, laser transmitter, light receiving panel, load electromagnet and fixed position components; S2. When a wear test is required on a bearing component, first adjust the three-jaw outer chuck to open, then place the corresponding bearing component in the three-jaw outer chuck, and during the placement of the bearing component, control the inner support positioning assembly to be inserted relative to the inner hole of the bearing component until the inner convex plate in the three-jaw outer chuck supports the bearing component, then adjust the three-jaw outer chuck to clamp and position the outer ring of the bearing component, and then adjust the inner support positioning assembly to tighten the inner ring of the bearing component, so as to achieve the compression positioning of the bearing component and the relative positioning between the bearing component and the center column; S3, keep the fixed position component in contact with the elastic centering component, so that one end of the center column is supported by the bearing component, and the other end of the center column is supported by the fixed position component, start the drive motor, and drive the motor to realize the rotation drive of the center column. The rotation of the center column realizes the relative rotation between the inner ring and the outer ring of the bearing component. When the bearing component needs to be subjected to a wear test, turn on the power supply of the load electromagnet, so that the load electromagnet is energized to generate an electromagnetic field, and the load addition of the center column is formed by the relative magnetic attraction between the electromagnetic field and the load iron ring, and the strength of the electromagnetic field is controlled by controlling the magnitude of the current of the load electromagnet, so as to realize the magnitude control of the load borne by the center column and the simulation formation of the variable load; S4. Maintain the load of the center column and the running state of the driving motor, so that the inner ring and the outer ring of the bearing component maintain relative rotational motion, so as to simulate the actual working state of the bearing component and form a friction and wear test of the bearing component. After the test is completed, the center column is controlled to be in a uniform rotation state, and the fixed position component is controlled to be relatively far away from the elastic centering component. After that, the fixed restriction effect at the bottom of the center column fails. After that, when the inner ring and the outer ring of the bearing component are in the process of relative rotation, if the rotation jump between the inner ring and the outer ring is small, the rotation swing of the center column is also small, otherwise the rotation swing of the center column is also large; S5. During the rotation and swinging process of the center column, the bottom end of the center column is fixed and restricted at a lower level, so its rotation and swinging amount will be greater. By judging the rotation and swinging condition of the bottom end of the center column, it is more convenient to detect the beating of the bearing. During the rotation and swinging process, the bottom end of the center column will drive the laser emitter to swing synchronously. The swinging of the laser emitter will cause the laser beam it emits to swing, and the position of the laser spot received by the light receiving panel will also change. The swinging amplitude of the center column is judged based on the changing amplitude between the multiple laser spots received by the light receiving panel, and finally the wear detection of the bearing is achieved.

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