Current-carrying friction wear test device
By designing the current-carrying friction and wear test device and using two brush components and insulating components, the problem of unstable wire winding and power-on loops in the prior art is solved, and the accuracy of test results and the improvement of test efficiency are achieved.
Patent Information
- Application Number
- CN202421129772.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Due to the single test head design, existing friction and wear test machines have wire winding problems and unstable power circuits, resulting in inaccurate test results and low test efficiency.
A current-carrying friction wear test device is designed, using two brush components and insulating components to ensure the stability of the current loading circuit, and through the design of a single-connecting shaft double balance adjustment plate, the independent axial force loading conditions of the two test heads are achieved.
The current load friction and wear test is carried out under the stable circuit, which improves the accuracy and testing efficiency of the test results. It can test pairs of brushes in the motor at the same time, which is more in line with the actual working conditions and has a better test effect.
Smart Images
Figure CN222734009U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of friction and wear equipment, in particular to a current-carrying friction and wear test device. Background Art
[0002] The existing friction and wear tester is designed with a single test head. When conducting a current-carrying friction and wear test, usually one of the sample and the friction disk is connected to the positive pole of the power supply, and the other is connected to the negative pole of the power supply. Since the friction disk needs to rotate at high speed, there will be a problem of wire entanglement, resulting in an unstable power circuit and failure to meet the test requirements. The brushes used as test pieces are generally used in pairs in the motor, but the equipment with a single test head can only test one test piece at a time. Therefore, the paired brushes in the motor need to be tested twice separately. The results of the two tests may have errors, the test effect is poor, and the test efficiency is low. Utility Model Content
[0003] The utility model aims to provide a current-carrying friction and wear test device to solve the problems existing in the above-mentioned prior art, and can perform current-carrying friction and wear tests under a stable circuit, ensure the accuracy of test results, and improve test efficiency.
[0004] To achieve the above purpose, the utility model provides the following solutions:
[0005] The utility model provides a current-carrying friction and wear testing device, preferably comprising a rotation driving component and a balanced loading component, wherein the rotation driving component comprises a friction disc, an insulating component and a driving device, wherein the driving device is used to drive the friction disc to rotate, and the insulating component is arranged between the friction disc and the driving device; the balanced loading component comprises two parallel balanced adjustment plates, a connecting shaft and an adjusting balance component, wherein the two balanced adjustment plates are connected through the connecting shaft, wherein one end of any of the balanced adjustment plates close to the friction disc is used to be connected to a brush component, and the other end is used to be connected to the adjusting balance component, wherein the adjusting balance component is used to keep the balanced adjustment plate horizontal, wherein one of the two brush assemblies is connected to the positive pole of a power supply, and the other is connected to the negative pole of the power supply, and the two brush assemblies and the friction disc constitute a current loading circuit.
[0006] Preferably, it also includes a base plate and a slider assembly, wherein the slider assembly is placed on the base plate, the connecting shaft is connected to the slider assembly, and the slider assembly is used to drive the connecting shaft to move along an axial direction perpendicular to the connecting shaft.
[0007] Preferably, the slider assembly includes a slider, a guide rail and a guide rail fixing seat fixedly connected to both ends of the guide rail, the two guide rail fixing seats are fixedly connected to the base plate, the slider is slidably connected to the guide rail, the connecting shaft is connected to the slider through a bearing seat, and the guide rail is perpendicular to the connecting shaft.
[0008] Preferably, the connection positions of the two balance adjustment plates and the connecting shaft can be adjusted along the axial direction of the connecting shaft, and the brush assembly includes a fixed block, an adjustment rod, a brush fixing seat and a brush, the fixed block is connected to the balance adjustment plate, the adjustment rod is connected to the fixed block and one end of the adjustment rod passes through the fixed block and is fixedly connected to the brush fixing seat, the brush is fixed on the brush fixing seat, the adjustment rod can drive the brush to move along its axial direction relative to the fixed block and rotate around its axis relative to the fixed block, and the axis of the adjustment rod is perpendicular to the connecting shaft and the guide rail.
[0009] Preferably, a force sensor is further included, and the force sensor is arranged between the balance adjustment plate and the brush assembly.
[0010] Preferably, the balancing adjustment assembly comprises a screw rod and a leveling nut, one end of the screw rod is fixedly connected to the balancing adjustment plate, and the leveling nut is threadedly connected to the screw rod.
[0011] Preferably, the two balance adjustment plates are provided with connecting holes at the same position, the connecting shaft is clearance-matched with the connecting hole, and one balance adjustment plate is rigidly connected to the connecting shaft via a top screw, and the other balance adjustment plate is connected to the connecting shaft via an elastic shaft with a retaining ring.
[0012] Preferably, the balance adjustment plate is provided with a strip hole, the length direction of the strip hole is parallel to the guide rail, and the fixing block has a connecting rod disposed in the strip hole, and the connecting rod can slide along the length direction of the strip hole.
[0013] Preferably, the brush is an arc-shaped head brush, and the friction mode between the arc-shaped head brush and the friction disk is line-surface friction.
[0014] Preferably, the driving device is a stepper motor, the output shaft of the stepper motor is fixedly connected to the coupling turntable, the coupling turntable and the friction plate are fixedly connected by bolts, the insulating component includes an insulating disk, an insulating bushing and an insulating gasket, the insulating disk is arranged between the coupling turntable and the friction disk, the insulating bushing and the insulating gasket are sleeved outside the bolt, the insulating bushing passes through the insulating disk and the coupling turntable, one end abuts against the friction disk, and the other end abuts against the insulating gasket, a nut is connected to the bolt, and abuts against one end of the insulating gasket away from the insulating bushing, and the insulating gasket, the insulating disk and the insulating bushing are made of polytetrafluoroethylene.
[0015] Compared with the prior art, the utility model has achieved the following technical effects:
[0016] The utility model provides a current-carrying friction and wear test device, which adopts two brush assemblies, and the two non-moving brush assemblies are respectively connected to two levels of a power supply, which can reduce the problem of wire entanglement, and an insulating assembly is arranged between the friction disk and the driving device, which can electrically isolate the friction disk from the motor, and ensure that the current loading circuit composed of the two brush assemblies and the friction disk is stable and reliable, and can meet the test requirements; and the two brush assemblies carry out current-carrying friction and wear tests at the same time, which can improve work efficiency compared with a single test head device that tests one brush at a time, and can test brushes that appear in pairs in the motor at the same time, which is more in line with actual working conditions and has better test effects; the design of a single connecting shaft and double balancing adjustment plates uses one connecting shaft to carry two independently adjustable balancing adjustment plates, which not only ensures independent axial force loading conditions of the two test heads but also saves space, making the overall structure of the device more compact. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 This is a front view of the current-carrying friction and wear testing device of the utility model;
[0019] Figure 2 It is a top view of the current-carrying friction and wear testing device of the utility model;
[0020] Figure 3 It is a side view of the current-carrying friction and wear testing device of the utility model;
[0021] Figure 4It is a side view of the friction disc and brush of the current-carrying friction and wear test device of the utility model;
[0022] Figure 5 It is a front view of the brush and brush fixing seat of the current-carrying friction and wear test device of the utility model;
[0023] Figure 6 for Figure 5 Section view along AA.
[0024] In the figure: 1-stepping motor; 2-friction disk; 3-coupling turntable; 4-insulating disk; 5-insulating bushing; 6-insulating washer; 7-nut; 8-bolt; 9-balance adjustment plate; 10-connecting shaft; 11-retaining ring for elastic shaft; 12-bearing; 13-bearing seat; 14-retaining ring for shaft; 15-screw; 16-leveling nut; 17-guide rail; 18-guide rail fixing seat; 19-slider; 20-bottom plate; 21-fixing block; 22-force sensor; 23-adjusting rod; 24-brush fixing seat; 25-brush; 26-top screw. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] The utility model aims to provide a current-carrying friction and wear test device to solve the problems existing in the above-mentioned prior art, and can perform current-carrying friction and wear tests under a stable circuit, ensure the accuracy of test results, and improve test efficiency.
[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0028] The utility model provides a current-carrying friction and wear test device, such as Figure 1-3As shown, it includes a rotation drive component and a balance loading component. The rotation drive component includes a friction disk 2, an insulating component and a driving device. The driving device is used to drive the friction disk 2 to rotate. The insulating component is arranged between the friction disk 2 and the driving device; the balance loading component includes two parallel balance adjustment plates 9, a connecting shaft 10 and an adjustment balance component. The two balance adjustment plates 9 are connected by the connecting shaft 10. One end of any balance adjustment plate 9 close to the friction disk 2 is used to connect with the brush assembly, and the other end is used to connect with the adjustment balance component. The adjustment balance component is used to keep the balance adjustment plate 9 horizontal. One of the two brush assemblies is electrically connected to the positive pole of the power supply, and the other is electrically connected to the negative pole of the power supply. The two brush assemblies and the friction disk 2 constitute a current loading circuit. Two brush assemblies are used, and the two non-moving brush assemblies are respectively connected to the two levels of the power supply, which can reduce the problem of wire entanglement. An insulating assembly is arranged between the friction disk 2 and the driving device, which can electrically isolate the friction disk 2 from the motor, ensuring that the current loading circuit composed of the two brush assemblies and the friction disk 2 is stable and reliable, and can meet the test requirements; and the two brush assemblies are simultaneously subjected to current-carrying friction and wear tests, which can improve work efficiency compared with the equipment with a single test head that tests one brush at a time, and can test the brushes that appear in pairs in the motor at the same time, which is more in line with the actual working conditions and has a better test effect; the design of a single connecting shaft and a double balancing adjustment plate uses a connecting shaft 10 to carry two independently adjustable balancing adjustment plates 9, which not only ensures the independent axial force loading conditions of the two test heads but also saves space, making the overall structure of the device more compact.
[0029] In the implementation manner of this embodiment, it is further preferred that the current-carrying friction and wear test device also includes a base plate 20 and a slider 19 assembly, the slider 19 assembly is placed on the base plate 20, the connecting shaft 10 is connected to the slider 19 assembly, the slider 19 assembly is used to drive the connecting shaft 10 to move along an axial direction perpendicular to the connecting shaft 10, the slider 19 assembly includes a slider 19, a guide rail 17 and a guide rail fixing seat 18 fixedly connected to both ends of the guide rail 17, the two guide rail fixing seats 18 are fixedly connected to the base plate 20, the slider 19 is slidably connected to the guide rail 17, and the connecting shaft 10 is connected to the slider 19 through a bearing 12 and a bearing seat 13. The guide rail 17 is perpendicular to the connecting shaft 10, and the connection positions of the two balance adjustment plates 9 and the connecting shaft 10 can be adjusted along the axial direction of the connecting shaft 10. The brush assembly includes a fixed block 21, an adjustment rod 23, a brush fixing seat 24 and a brush 25. The fixed block 21 is connected to the balance adjustment plate 9, the adjustment rod 23 is connected to the fixed block 21 and one end of the adjustment rod passes through the fixed block 21 and is fixedly connected to the brush fixing seat 24. The brush 25 is fixed on the brush fixing seat 24. The adjustment rod 23 can drive the brush 25 to move relative to the fixed block 21 along its axial direction, and the axis of the adjustment rod 23 is perpendicular to the connecting shaft 10 and the guide rail 17. Before the current-carrying friction and wear test is carried out, the test head can be displaced along the guide rail 17 through the slider 19 of the slider 19 assembly, so that the slider 19 drives the connecting shaft 10 and the two balance adjustment plates 9 to move together to complete the movement of the test head in the X direction. The slider 19 assembly can realize the continuous and smooth adjustment of the balance loading assembly along the X direction; after the position of the connecting shaft 10 is fixed, the adjustment of the two test heads in the Y direction can be realized by adjusting the connection position of the two balance adjustment plates 9 and the connecting shaft 10. After the position of the two balance adjustment plates 9 is determined, the connecting shaft 10 is axially limited by the shaft retaining ring 14; the adjustment of the test head in the Z direction is mainly realized by the movement of the adjustment rod 23 relative to the fixed block 21 along its axial direction, and the adjustment is completed by locking with a top screw. Through the above adjustment, the current-carrying friction and wear test device can complete the movement of the test head in six degrees of freedom in space. Test head multi-degree-of-freedom spatial position adjustment assembly: This device can realize the adjustment of the three translational degrees of freedom of the test head X, Y, and Z.
[0030] In the implementation of this embodiment, it is further preferred that Figure 5-6 As shown, the brush holder 24 is processed by an electrospark etching process, has high dimensional accuracy, and is well adapted to the brush 25. The brush 25 is flush with the bottom of the brush holder 24 during assembly to ensure that the brush 25 fits well with the brush holder 24, and the brush 25 is locked with a top screw 26 to ensure that the brush 25 does not loosen during the test.
[0031] It is further preferred in the implementation manner of this embodiment that the current-carrying friction and wear testing device further includes a force sensor 22 , and the force sensor 22 is arranged between the balance adjustment plate 9 and the brush 25 assembly.
[0032] It is further preferred in the implementation manner of this embodiment that the balancing adjustment assembly includes a screw rod 15 and a leveling nut 16 , one end of the screw rod 15 is fixedly connected to the balancing adjustment plate 9 , and the leveling nut 16 is threadedly connected to the screw rod 15 .
[0033] It is further preferred in the implementation of this embodiment that the two balance adjustment plates 9 are provided with connection holes at the same position, the connecting shaft 10 is in clearance with the connection hole, and one balance adjustment plate 9 is rigidly connected to the connecting shaft 10 through a top screw, and the other balance adjustment plate 9 is connected to the connecting shaft 10 through an elastic shaft with a retaining ring 11. The two balance adjustment plates 9 are connected to the connecting shaft 10 in different ways, which can ensure that the two balance adjustment plates 9 on the same connecting shaft 10 are relatively independent, each balance adjustment plate 9 can be calibrated separately through a leveling nut, and tests can be performed with two test heads applying different loading forces. The balance adjustment plate 9 rigidly connected to the connecting shaft 10 through a top screw can reduce the impact of vibration on the sensor and improve the accuracy of the test data.
[0034] In the implementation of this embodiment, it is further preferred that the balance adjustment plate 9 is provided with a strip hole, the length direction of the strip hole is parallel to the guide rail 17, and the fixed block 21 has a connecting rod placed in the strip hole, and the connecting rod can slide along the length direction of the strip hole. By sliding the connecting rod on the strip hole on the balance adjustment plate 9, the relative position adjustment of the two test heads along the X direction can be achieved, ensuring that the two test heads can be independently adjusted in the X direction without interlocking.
[0035] In the implementation of this embodiment, it is further preferred that Figure 4 As shown, the brush 25 is an arc-shaped brush, and the friction mode between the arc-shaped brush and the friction plate 2 is line-surface friction, and the adjusting rod 23 can drive the brush 25 to rotate around its axis relative to the fixed block 21, and the two arc-shaped brush test heads can realize fixed-axis rotation around the axis of the adjusting rod 23 respectively, which is used to adjust the arc-shaped brush to be perpendicular to the radius of the friction plate 2, and the two arc-shaped brushes are also perpendicular to each other.
[0036] It is further preferred in the implementation manner of this embodiment that the driving device is a stepper motor 1, the output shaft of the stepper motor 1 is fixedly connected to the coupling turntable 3, the coupling turntable 3 is fixedly connected to the friction disk 2 by bolts 8, the insulating component includes an insulating disk 4, an insulating bushing 5 and an insulating washer 6, the insulating disk 4 is arranged between the coupling turntable 3 and the friction disk 2, the insulating bushing 5 and the insulating washer 6 are sleeved outside the bolt 8, the insulating bushing 5 passes through the insulating disk 4 and the coupling turntable 3, one end abuts against the friction disk 2, and the other end abuts against the insulating washer 6, the nut 7 is connected to the bolt 8, and abuts against one end of the insulating washer 6 away from the insulating bushing 5, the insulating washer 6, the insulating disk 4 and the insulating bushing 5 are made of polytetrafluoroethylene, the insulating washer 6, the insulating disk 4 and the insulating bushing 5 can completely isolate the motor shaft from the friction disk 2, and polytetrafluoroethylene has good insulation performance and can play a certain shock absorption effect, thereby ensuring smooth and reliable operation of the friction test.
[0037] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A current-carrying friction and wear test device, characterized in that: It includes a rotation drive component and a balance loading component, wherein the rotation drive component includes a friction disk, an insulating component and a driving device, wherein the driving device is used to drive the friction disk to rotate, and the insulating component is arranged between the friction disk and the driving device; the balance loading component includes two parallel balance adjustment plates, a connecting shaft and an adjustment balance component, wherein the two balance adjustment plates are connected through the connecting shaft, wherein one end of any balance adjustment plate close to the friction disk is used to be connected to a brush component, and the other end is used to be connected to the adjustment balance component, wherein the adjustment balance component is used to keep the balance adjustment plate horizontal, wherein one of the two brush assemblies is connected to the positive pole of a power supply, and the other is connected to the negative pole of a power supply, and wherein the two brush assemblies and the friction disk constitute a current loading circuit.
2. The current-carrying friction and wear testing device according to claim 1, characterized in that: It also includes a base plate and a slider assembly, wherein the slider assembly is placed on the base plate, the connecting shaft is connected to the slider assembly, and the slider assembly is used to drive the connecting shaft to move along an axial direction perpendicular to the connecting shaft.
3. The current-carrying friction and wear testing device according to claim 2, characterized in that: The slider assembly includes a slider, a guide rail and a guide rail fixing seat fixedly connected to both ends of the guide rail, the two guide rail fixing seats are fixedly connected to the base plate, the slider is slidably connected to the guide rail, the connecting shaft is connected to the slider through a bearing seat, and the guide rail is perpendicular to the connecting shaft.
4. The current-carrying friction and wear testing device according to claim 3, characterized in that: The connection positions of the two balance adjustment plates and the connecting shaft can be adjusted along the axial direction of the connecting shaft. The brush assembly includes a fixed block, an adjustment rod, a brush fixing seat and a brush. The fixed block is connected to the balance adjustment plate. The adjustment rod is connected to the fixed block and one end of the adjustment rod passes through the fixed block and is fixedly connected to the brush fixing seat. The brush is fixed on the brush fixing seat. The adjustment rod can drive the brush to move relative to the fixed block along its axial direction and rotate relative to the fixed block around its axis. The axis of the adjustment rod is perpendicular to the connecting shaft and the guide rail.
5. The current-carrying friction and wear testing device according to claim 1, characterized in that: A force sensor is also included, and the force sensor is arranged between the balance adjustment plate and the brush assembly.
6. The current-carrying friction and wear testing device according to claim 1, characterized in that: The balancing adjustment component comprises a screw rod and a leveling nut. One end of the screw rod is fixedly connected to the balancing adjustment plate, and the leveling nut is threadedly connected to the screw rod.
7. The current-carrying friction and wear testing device according to claim 1, characterized in that: The two balance adjustment plates are provided with connecting holes at the same position, the connecting shaft is loosely matched with the connecting hole, and one balance adjustment plate is rigidly connected to the connecting shaft via a top screw, and the other balance adjustment plate is connected to the connecting shaft via an elastic shaft retaining ring.
8. The current-carrying friction and wear testing device according to claim 4, characterized in that: The balance adjustment plate is provided with a strip hole, the length direction of the strip hole is parallel to the guide rail, and the fixing block has a connecting rod placed in the strip hole, and the connecting rod can slide along the length direction of the strip hole.
9. The current-carrying friction and wear testing device according to claim 4, characterized in that: The brush is an arc-shaped brush, and the friction mode between the arc-shaped brush and the friction disk is line-surface friction.
10. The current-carrying friction and wear testing device according to claim 1, characterized in that: The driving device is a stepper motor, the output shaft of the stepper motor is fixedly connected to the coupling turntable, the coupling turntable is fixedly connected to the friction plate by bolts, the insulating component includes an insulating disk, an insulating bushing and an insulating washer, the insulating disk is arranged between the coupling turntable and the friction disk, the insulating bushing and the insulating washer are sleeved outside the bolt, the insulating bushing passes through the insulating disk and the coupling turntable, one end of the insulating bushing abuts against the friction disk, and the other end abuts against the insulating washer, a nut is connected to the bolt, and abuts against one end of the insulating washer away from the insulating bushing, and the insulating washer, the insulating disk and the insulating bushing are made of polytetrafluoroethylene.