Driving motor bearing lubrication characteristic testing device

Abstract

The utility model relates to the technical field of bearing testing, in particular to a driving motor bearing lubrication characteristic testing device. During application, the first motor drives the inner ring of the to-be-tested bearing to rotate through the first driving shaft, and the second motor drives the second driving shaft to rotate, so that the friction plate gradually gets close to and abuts against the outer ring of the to-be-tested bearing, the outer ring of the to-be-tested bearing is locked, and the inner ring and the outer ring of the to-be-tested bearing rotate relatively. The arc-shaped plate surface can increase the contact area with the outer ring of the to-be-tested bearing, and the rubber layer can increase the friction force so as to lock the outer ring of the to-be-tested bearing. During testing, different environment temperatures can be simulated by adjusting the heating assembly, and the infrared thermometer is used for monitoring the temperature change condition of the bearing to be tested. After the temperature change condition of a certain to-be-tested bearing is tested, the to-be-tested bearings with different lubrication degrees can be replaced, and then the temperature change conditions at different environment temperatures are monitored, so that the temperature change conditions of different lubrication characteristics of the bearings at different environment temperatures are tested.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing test, in particular to a driving motor bearing lubrication characteristic test device. BACKGROUND

[0002] With the rapid development of new energy vehicles, industrial servo systems and other fields, the reliability of driving motor bearings becomes a key factor affecting the service life and energy efficiency of equipment. The lubrication characteristics of bearings directly determine their friction loss, temperature rise and failure risk. Especially under complex environmental temperatures (such as high-temperature continuous operation), the performance degradation of lubricants may cause bearing jamming, abnormal wear and even system failure. Therefore, accurately evaluating the thermodynamic behavior of bearings under different temperatures and lubrication states is a key technical requirement for optimizing lubrication design and improving motor reliability.

[0003] Traditional bearing lubrication test methods mostly rely on tests under a single environmental temperature (usually room temperature), resulting in significant deviation between test data and actual application. Therefore, how to simulate different environmental temperatures and monitor the temperature changes of bearings for bearing lubrication characteristic test is a technical problem to be solved in the field. CONTENT OF THE INVENTION

[0004] Therefore, the present application provides a driving motor bearing lubrication characteristic test device, which can simulate different environmental temperatures and monitor the temperature changes of bearings during rotation for bearing lubrication characteristic test.

[0005] In a first aspect, the present application provides a driving motor bearing lubrication characteristic test device, which comprises: a bearing platform; a support connected to the bearing platform, the support being provided with a shaft hole; a first driving shaft arranged in the shaft hole, one end of the first driving shaft being connected to a first motor; a bearing to be tested, the inner ring of the bearing to be tested being sleeved on the first driving shaft; a shaft seat fixed to the bearing platform; a second driving shaft arranged in the shaft seat, one end of the second driving shaft being connected to a second motor, the first driving shaft and the second driving shaft being parallel to each other and parallel to the platform surface of the bearing platform; a support leg connected to one end of the second driving shaft; a friction plate connected to the other end of the support leg, the friction plate having an arc-shaped plate surface, the arc-shaped plate surface facing the outer ring of the bearing to be tested, and the arc-shaped plate surface being covered with a rubber layer; a heating assembly arranged on the platform surface of the bearing platform facing the bearing to be tested; and an infrared thermometer arranged on one side of the bearing platform, the infrared thermometer facing the bearing to be tested.

[0006] In combination with the first aspect, in a possible implementation manner, the support comprises a first support leg and a second support leg, the first support leg and the second support leg are arranged at a preset angle, and the shaft hole is located at the junction of the first support leg and the second support leg.

[0007] With reference to the first aspect, in a possible implementation manner, the first driving shaft is provided with a variable-diameter ring, and an inner ring of the bearing to be measured is sleeved on the variable-diameter ring.

[0008] With reference to the first aspect, in a possible implementation manner, the variable-diameter ring is provided with a first threaded hole, the first driving shaft is provided with a second threaded hole, and the first threaded hole and the second threaded hole are aligned with each other and are fitted with a fixing screw rod.

[0009] With reference to the first aspect, in a possible implementation manner, the second driving shaft is provided with two legs, and the two legs are located on opposite sides of the friction plate, respectively.

[0010] With reference to the first aspect, in a possible implementation manner, a side portion of the friction plate is provided with a cylindrical protrusion, the cylindrical protrusion is provided with a through hole and a limiting cylindrical cavity in the axial direction, one end of the through hole is formed on a surface of the cylindrical protrusion away from the friction plate, the limiting cylindrical cavity is located in the interior of the cylindrical protrusion, the other end of the through hole is in communication with the limiting cylindrical cavity, a diameter of the limiting cylindrical cavity is greater than a diameter of the through hole, and an end of the cylindrical protrusion away from the friction plate is provided with a rotating boss; an end of the leg away from the second driving shaft is provided with a rotating support seat, the rotating support seat is provided with a third threaded hole, the rotating support seat is further provided with a rotating accommodating cavity, the rotating boss is floatingly connected in the rotating accommodating cavity; a screw rod is arranged in the third threaded hole and the through hole, the screw rod includes a threaded rod body with a thread, a non-thread rod body without a thread, and a locking head, the threaded rod body is screwed in the third threaded hole, the non-thread rod body is arranged in the through hole, and the locking head is floatingly connected in the limiting cylindrical cavity, and a diameter of the locking head is greater than a diameter of the non-thread rod body.

[0011] With reference to the first aspect, in a possible implementation manner, the rotating boss has an activity range of any one of 1 mm to 2 mm in the axial direction of the cylindrical protrusion in the rotating accommodating cavity, and the locking head has an activity range of any one of 2 mm to 5 mm in the axial direction of the cylindrical protrusion in the limiting cylindrical cavity.

[0012] With reference to the first aspect, in a possible implementation manner, the number of the heating assemblies is a plurality, the heating assembly is an electric heating wire, and the plurality of heating assemblies are uniformly arranged on a platform surface of the bearing platform facing the bearing to be measured.

[0013] With reference to the first aspect, in a possible implementation manner, the plurality of heating assemblies constitute a heating region, and a geometric center of the bearing to be measured is located directly above a geometric center of the heating region.

[0014] The first motor drives the inner ring of the bearing to be tested to rotate through the first drive shaft, and the second motor drives the second drive shaft to rotate to make the friction plate gradually approach and abut on the outer ring of the bearing to be tested, so as to lock the outer ring of the bearing to be tested, and the inner ring and the outer ring of the bearing to be tested rotate relatively. The arc-shaped plate surface can increase the contact area with the outer ring of the bearing to be tested, and the rubber layer can increase the friction to lock the outer ring of the bearing to be tested. During the test, the heating assembly can be adjusted to simulate different environmental temperatures, and the infrared temperature measuring instrument is used to monitor the temperature change of the bearing to be tested. After the temperature change of a certain bearing to be tested is tested, the bearing to be tested with different lubricating degrees can be replaced, and the temperature change under different environmental temperatures is monitored again, so as to test the temperature change of different lubricating properties under different environmental temperatures of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a structural schematic diagram of a driving motor bearing lubricating property test device provided by an embodiment of the application.

[0016] Figure 2 Fig. 2 is a support structure schematic diagram of the driving motor bearing lubricating property test device. Figure 1

[0017] Figure 3 Fig. 3 is a partial structure schematic diagram of the driving motor bearing lubricating property test device. Figure 1

[0018] Figure 4 Fig. 4 is a structure schematic diagram of a friction plate part of the driving motor bearing lubricating property test device.

[0019] Figure 5 Fig. 5 is a partial structure enlarged schematic diagram of the driving motor bearing lubricating property test device. Figure 4 DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0021] An exemplary driving motor bearing lubricating property test device is as follows:

[0022] Figure 1 Fig. 1 is a structural schematic diagram of a driving motor bearing lubricating property test device provided by an embodiment of the application. The application provides a driving motor bearing lubricating property test device. In an embodiment, as shown in Fig. 1, the driving motor bearing lubricating property test device comprises a support structure 1, a first motor 2, a first drive shaft 3, a second motor 4, a second drive shaft 5, a heating assembly 6, a bearing to be tested 7, and an infrared temperature measuring instrument 8. Figure 1 ​​​As shown, the driving motor bearing lubrication characteristic test device comprises a bearing platform 1, a support 2, a first driving shaft 3, a bearing to be tested 4, a shaft seat 5, a second driving shaft 6, a support leg 7, a friction plate 8, a heating assembly 10 and an infrared temperature measuring instrument 11. The support 2 is connected to the bearing platform 1, and the support 2 is provided with a shaft hole 201. The first driving shaft 3 is arranged in the shaft hole 201, and one end of the first driving shaft 3 is connected to a first motor. The inner ring of the bearing to be tested 4 is sleeved on the first driving shaft 3. The shaft seat 5 is fixed to the bearing platform 1, the second driving shaft 6 is arranged in the shaft seat 5, one end of the second driving shaft 6 is connected to a second motor, and the first driving shaft 3 and the second driving shaft 6 are parallel to each other and parallel to the platform surface of the bearing platform 1. One end of the support leg 7 is connected to the second driving shaft 6, the friction plate 8 is connected to the other end of the support leg 7, the friction plate 8 has an arc-shaped plate surface 801, the arc-shaped plate surface 801 faces the outer ring of the bearing to be tested 4, and the arc-shaped plate surface 801 is covered with a rubber layer 9. The heating assembly 10 is arranged on the platform surface of the bearing platform 1 facing the bearing to be tested 4. The infrared temperature measuring instrument 11 is arranged on one side of the bearing platform 1, and the infrared temperature measuring instrument 11 faces the bearing to be tested 4.

[0023] In application, the first motor drives the inner ring of the bearing to be tested 4 to rotate through the first driving shaft 3, the second motor drives the second driving shaft 6 to rotate so that the friction plate 8 gradually approaches and abuts against the outer ring of the bearing to be tested 4, thereby locking the outer ring of the bearing to be tested 4, and the inner ring and the outer ring of the bearing to be tested 4 rotate relatively. The arc-shaped plate surface 801 can increase the contact area with the outer ring of the bearing to be tested 4, and the rubber layer 9 can increase the friction force to lock the outer ring of the bearing to be tested 4. During testing, the heating assembly 10 can be adjusted to simulate different environmental temperatures, and the infrared temperature measuring instrument 11 is used to monitor the temperature change of the bearing to be tested 4. After testing the temperature change of a certain bearing to be tested 4, different bearings to be tested 4 with different lubricating degrees can be replaced, and the temperature change under different environmental temperatures is monitored to test the temperature change of different lubricating characteristics under different environmental temperatures of the bearing.

[0024] Figure 2 As shown in the support structure schematic view of Figure 1 In an embodiment, as shown in Figure 1 and 2 The support 2 comprises a first support leg 202 and a second support leg 203, the first support leg 202 and the second support leg 203 are arranged at a preset angle, and the shaft hole 201 is located at the junction of the first support leg 202 and the second support leg 203. The preset angle can be 60°, or 90°, or 120°, the first support leg 202 and the second support leg 203 form a triangular support structure, which can improve the rotation stability of the first driving shaft 3 driving the bearing to be tested 4 to rotate.

[0025] Figure 3 As shown in the partial structure schematic view of Figure 1 In an embodiment, as shown inFigure 3 As shown, a variable diameter ring 301 is provided on the first drive shaft 3, and the inner ring of the bearing 4 to be tested is fitted on the variable diameter ring 301, so that it can be adapted to various sizes and models of the bearing 4 to be tested.

[0026] In one embodiment, such as Figure 3 As shown, the reducing ring 301 has a first threaded hole, and the first drive shaft 3 has a second threaded hole. The first and second threaded holes are aligned with each other and fitted with a fixing screw 302, which can fix the reducing ring 301. When it is necessary to replace or disassemble the reducing ring 301, the fixing screw 302 can be removed.

[0027] Figure 4 The diagram shows a structural schematic of the friction plate area. In one embodiment, as shown... Figure 4 As shown, the second drive shaft 6 is provided with two support legs 7, which are located on opposite sides of the friction plate 8, and can support the friction plate 8 from both sides to improve the locking stability of the friction plate 8 on the outer ring of the bearing 4 under test.

[0028] Figure 5 As shown Figure 4 A partially enlarged structural diagram. In one embodiment, as shown... Figure 5As shown, the side of the friction plate 8 is provided with a cylindrical protrusion 802, which is provided with a through hole 803 and a limiting cylindrical cavity 804 in the axial direction. One end of the through hole 803 is formed on the surface of the cylindrical protrusion 802 away from the friction plate 8, and the limiting cylindrical cavity 804 is located in the interior of the cylindrical protrusion 802. The other end of the through hole 803 communicates with the limiting cylindrical cavity 804, and the diameter of the limiting cylindrical cavity 804 is larger than that of the through hole 803. The end of the cylindrical protrusion 802 away from the friction plate 8 is provided with a rotating boss 805. The end of the supporting leg 7 away from the second driving shaft 6 is provided with a rotating support seat 701, which is provided with a third screw hole 702 and a rotating accommodating cavity 703. The rotating boss 805 is floatingly connected in the rotating accommodating cavity 703. A screw rod 704 is arranged in the third screw hole 702 and the through hole 803. The screw rod 704 includes a threaded rod body with threads, a non-threaded rod body without threads, and a locking head 705. The threaded rod body is screwed in the third screw hole 702, the non-threaded rod body is arranged in the through hole 803, and the locking head 705 is floatingly connected in the limiting cylindrical cavity 804. The diameter of the locking head 705 is larger than that of the non-threaded rod body. In this embodiment, the facing direction of the arc-shaped plate surface 801 of the friction plate 8 can be adjusted to adapt to bearings 4 of various sizes. When it is necessary to adjust the facing direction of the arc-shaped plate surface 801, the screw rod 704 is rotated, and the locking head 705 at the end of the screw rod 704 can move in the limiting cylindrical cavity 804, so that the rotating boss 805 can move in the rotating accommodating cavity 703. At this time, the friction plate 8 can be rotated to adjust the torsion angle of the friction plate 8 relative to the rotating support seat 701, that is, to adjust the facing direction of the arc-shaped plate surface 801. The screw rod 704 is further rotated, so that the screw rod 704 is deepened or withdrawn into the through hole 803, thereby driving the locking head 705 to abut against the wall surface of the limiting cylindrical cavity 804, so as to drive the rotating boss 805 to abut against the wall surface of the rotating accommodating cavity 703, thereby locking the rotating boss 805 and the rotating accommodating cavity 703, so that the friction plate 8 cannot be twisted relative to the rotating support seat 701, that is, the facing direction of the arc-shaped plate surface 801 is locked.

[0029] In an embodiment, the rotating boss 805 moves in the rotating accommodating cavity 703 along the axial direction of the cylindrical protrusion 802 by any value in the range of 1mm to 2mm. The locking head 705 moves in the limiting cylindrical cavity 804 along the axial direction of the cylindrical protrusion 802 by any value in the range of 2mm to 5mm. Specifically, the structure can be designed such that the movement range of the rotating boss 805 is 1mm, and the movement range of the locking head 705 is 2mm; or the structure can be designed such that the movement range of the rotating boss 805 is 1.5mm, and the movement range of the locking head 705 is 3mm; or the structure can be designed such that the movement range of the rotating boss 805 is 2mm, and the movement range of the locking head 705 is 5mm.

[0030] In an embodiment, as shown in FIG. 6, the rotating boss 805 is provided with a plurality of screw holes 8051, and the rotating accommodating cavity 703 is provided with a plurality of screw rods 706. The screw rods 706 are arranged in the screw holes 8051. Figure 1As shown, the number of heating assemblies 10 is multiple, the heating assemblies 10 are electric heating wires, and the multiple heating assemblies 10 are uniformly arranged on the platform surface of the bearing platform 1 facing the bearing 4 to be tested. The heating assemblies 10 are adjusted to raise the ambient temperature above the bearing platform 1 to simulate that the bearing 4 to be tested is in different ambient temperatures.

[0031] In an embodiment, the multiple heating assemblies 10 constitute a heating area, and the geometric center of the bearing 4 to be tested is directly above the geometric center of the heating area, so that the bearing 4 to be tested can be sufficiently heated to better simulate that the bearing 4 to be tested is in different ambient temperatures.

[0032] The above describes the basic principles of the present application in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above specific details are only for the purpose of example and for the purpose of understanding, and the above details do not limit the present application to the must-use specific details.

[0033] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply the connection, arrangement, configuration shown in the block diagram. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have" and the like are open-ended words, mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0034] It should also be noted that in the devices, equipment and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0035] The above description of the disclosed aspects is provided so that any person skilled in the art can make or use the present application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0036] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A test device for driving motor bearing lubrication characteristics, characterized by, The utility model relates to a bearing lubrication characteristic test device for driving motor, which comprises the following parts: A bearing platform (1); A support (2) connected to the bearing platform (1), wherein the support (2) is provided with an axle hole (201); A first driving shaft (3) penetrating the axle hole (201), wherein one end of the first driving shaft (3) is connected to a first motor; A bearing (4) to be tested, wherein the inner ring of the bearing (4) to be tested is sleeved on the first driving shaft (3); An axle seat (5) fixed to the bearing platform (1); A second driving shaft (6) penetrating the axle seat (5), wherein one end of the second driving shaft (6) is connected to a second motor, and the first driving shaft (3) and the second driving shaft (6) are parallel to each other and parallel to the platform surface of the bearing platform (1); A support leg (7) connected to one end of the second driving shaft (6); A friction plate (8) connected to the other end of the support leg (7), wherein the friction plate (8) has an arc-shaped plate surface (801) facing the outer ring of the bearing (4) to be tested, and the arc-shaped plate surface (801) is covered with a rubber layer (9); A heating assembly (10) arranged on the platform surface of the bearing platform (1) facing the bearing (4) to be tested; and An infrared temperature measuring instrument (11) arranged on one side of the bearing platform (1), wherein the infrared temperature measuring instrument (11) faces the bearing (4) to be tested. The support (2) comprises a first support leg (202) and a second support leg (203), wherein the first support leg (202) and the second support leg (203) are arranged at a preset angle, and the axle hole (201) is located at the junction of the first support leg (202) and the second support leg (203).

2. The drive motor bearing lubrication characteristics test device of claim 1, wherein, The first driving shaft (3) is provided with a variable-diameter ring (301), and the inner ring of the bearing (4) to be tested is sleeved on the variable-diameter ring (301).

3. The test apparatus of claim 1, wherein, 4. The bearing lubrication characteristic test device for driving motor according to claim 3, wherein the variable-diameter ring (301) is provided with a first screw hole, the first driving shaft (3) is provided with a second screw hole, the first screw hole and the second screw hole are aligned with each other and are fitted with a fixing screw rod (302).

5. The bearing lubrication characteristic test device for driving motor according to claim 1, wherein the second driving shaft (6) is provided with two support legs (7), and the two support legs (7) are respectively located on opposite sides of the friction plate (8).

6. The bearing lubrication characteristic test device for driving motor according to claim 5, wherein ​ ​ ​ The side of the friction plate (8) is provided with a cylindrical protrusion (802), the cylindrical protrusion (802) is provided with a through hole (803) and a limiting cylindrical cavity (804) in the axial direction, one end of the through hole (803) is opened on the surface of the cylindrical protrusion (802) away from the friction plate (8), the limiting cylindrical cavity (804) is located in the interior of the cylindrical protrusion (802), the other end of the through hole (803) is in communication with the limiting cylindrical cavity (804), the diameter of the limiting cylindrical cavity (804) is greater than the diameter of the through hole (803), and the end of the cylindrical protrusion (802) away from the friction plate (8) is provided with a rotating boss (805); The end of the supporting leg (7) away from the second driving shaft (6) is provided with a rotating support seat (701), the rotating support seat (701) is provided with a third screw hole (702), and the rotating support seat (701) is also provided with a rotating containing cavity (703), and the rotating boss (805) is floatingly connected in the rotating containing cavity (703); The third screw hole (702) and the through hole (803) are provided with a screw rod (704), the screw rod (704) comprises a threaded rod body with threads, a non-threaded rod body without threads and a locking head (705), the threaded rod is screwed in the third screw hole (702), the non-threaded rod body is provided in the through hole (803), the locking head (705) is floatingly connected in the limiting cylindrical cavity (804), and the diameter of the locking head (705) is greater than that of the non-threaded rod body.

7. The driving motor bearing lubrication characteristic test device according to claim 6, wherein, The rotating boss (805) in the rotating containing cavity (703) has an axial movement range of any value in a range from 1mm to 2mm along the cylindrical protrusion (802); The locking head (705) in the limiting cylindrical cavity (804) has an axial movement range of any value in a range from 2mm to 5mm along the cylindrical protrusion (802).

8. The driving motor bearing lubrication characteristic test device according to claim 1, wherein, The number of the heating assemblies (10) is multiple, the heating assembly (10) is an electric heating wire, and multiple heating assemblies (10) are uniformly arranged on the platform surface of the bearing platform (1) facing the bearing (4) to be tested.

9. The driving motor bearing lubrication characteristic test device according to claim 8, wherein, Multiple heating assemblies (10) constitute a heating area, and the geometric center of the bearing (4) to be tested is located directly above the geometric center of the heating area.

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