Precise reducer bearing friction torque testing device

Abstract

The utility model relates to the technical field of speed reducer assembly testing devices, and particularly discloses a precision speed reducer bearing friction torque testing device. The carrying disc is arranged on the main body and is used for placing an inner ring of the bearing; the first moving assembly is located on one side of the bearing, can do reciprocating motion along a straight line and penetrates through an inner ring of the bearing; the pressing plate is detachably arranged on the first moving assembly and is used for pressing and touching an inner ring of the bearing; the second motion assembly is located on one side of the bearing and can do reciprocating motion along a straight line so as to press and touch an outer ring of the bearing; the test assembly is in transmission connection with the second linear motion assembly and is used for driving the outer ring of the bearing to rotate and measuring the friction torque; according to the utility model, the press-fitting condition of the bearing can be simulated outside the RV reducer, and the friction torque of the bearing under the simulation condition can be measured through the test assembly; the disassembly and assembly times of the bearing on the RV speed reducer can be effectively reduced, and the assembly efficiency of the RV speed reducer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a reducer assembly test device, in particular to a precision reducer bearing friction torque test device. Background Art

[0002] During the assembly process of the RV reducer, the bearing needs to be installed into the RV reducer cavity. The assembled bearing is compressed using front and rear bolts. The compression force borne by the bearings in different RV reducers is between 2 and 5 tons.

[0003] In the prior art, in order to ensure that the bearing installed in the RV reducer is not stuck, it is necessary to connect the input shaft of the RV reducer to the motor and the torque sensor, and drive the input shaft of the RV reducer to rotate by the motor to measure the friction torque of the bearing.

[0004] However, when the friction torque of the bearing is measured to be inconsistent with the production standard, the bearing needs to be removed from the RV reducer, reinstalled, and retested. This testing process is cumbersome and reduces the assembly efficiency of the RV reducer. Utility Model Content

[0005] In view of the above problems, the utility model provides a precision reducer bearing friction torque testing device, the purpose of which is to reduce the number of times the bearing is disassembled and assembled on the RV reducer and improve the assembly efficiency of the RV reducer.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0007] A precision reducer bearing friction torque test device is provided, comprising: a main body; a loading plate, arranged on the main body, for placing the inner ring of the bearing; a first motion component, located at one side of the bearing, capable of reciprocating along a straight line and passing through the inner ring of the bearing; a pressure plate, detachably arranged on the first motion component, for pressing the inner ring of the bearing; a second motion component, located at one side of the bearing, capable of reciprocating along a straight line to press the outer ring of the bearing; a test component, transmission-connected to the second linear motion component, for driving the outer ring of the bearing to rotate and measuring the friction torque.

[0008] Furthermore, the first motion assembly includes: a telescopic component, which is arranged on the main body; the piston rod of the telescopic component is coaxially installed with the bearing, and the pressure plate is detachably installed on the end of the piston rod of the telescopic component.

[0009] Furthermore, the second motion component includes: a guide rail, which is arranged on the main body and extends toward the bearing; a loading platform, which is movably arranged on the guide rail; a pressure contact component, which is arranged on the loading platform and is used to press the outer ring of the bearing; and a driving component, which is used to drive the loading platform to move along the guide rail.

[0010] Furthermore, the test assembly includes: a driving motor, which is arranged on the loading platform; a torque sensor, one end of which is transmission-connected to the driving motor and the other end of which is transmission-connected to the pressure-touch component.

[0011] Furthermore, the pressure contact component includes: a mounting plate connected to the torque sensor; a plurality of legs detachably arranged on the mounting plate; and a latch arranged on each leg for inserting into a mounting hole on the outer ring of the bearing.

[0012] Furthermore, the driving component includes: a lead screw, which is installed parallel to the guide rail and is transmission-connected to the loading platform; and a displacement motor, which is transmission-connected to the lead screw.

[0013] The beneficial effects of the utility model are as follows: in the utility model, by setting the first moving component and the pressure plate, a clamping force can be provided to the inner ring of the bearing; by setting the second moving component, a clamping force can be provided to the outer ring of the bearing; by using the utility model, the press-fitting condition of the bearing can be simulated outside the RV reducer, and the friction torque of the bearing under the simulated condition can be measured by the test component; the number of times the bearing is disassembled and assembled on the RV reducer can be effectively reduced, thereby improving the assembly efficiency of the RV reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the overall structure of the testing device provided in an embodiment of the present application.

[0015] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A.

[0016] Figure 3 This is a front view of the overall structure of the testing device provided in an embodiment of the present application.

[0017] Among them, 1. main body; 11. loading plate; 21. telescopic component; 22. piston rod; 31. guide rail; 32. loading platform; 33. mounting plate; 34. support foot; 35. latch; 36. displacement motor; 4. pressure plate; 51. drive motor; 52. torque sensor; 6. bearing. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Reference Figure 1As shown, an embodiment of the present application discloses a precision reducer bearing friction torque testing device, comprising: a main body 1; a loading plate 11, arranged on the main body 1, for placing the inner ring of the bearing 6; a first motion component, located on one side of the bearing 6, capable of reciprocating along a straight line and passing through the inner ring of the bearing 6; a pressure plate 4, detachably arranged on the first motion component, for pressing the inner ring of the bearing 6; a second motion component, located on one side of the bearing 6, capable of reciprocating along a straight line to press the outer ring of the bearing 6; a test component, which is transmission-connected to the second linear motion component, for driving the outer ring of the bearing 6 to rotate and measuring the friction torque.

[0020] In specific use, before installing the bearing 6 to the RV reducer, first place the shaft on the loading plate 11, then start the first moving component to move in a straight line and pass through the inner ring of the bearing 6, manually install the pressure plate 4 on the first moving component, and start the first moving component to move in a straight line direction, driving the pressure plate 4 to provide a clamping force to the inner ring of the bearing 6; then start the second moving component to move in a straight line direction, press the outer ring of the bearing 6 to provide a clamping force to the outer ring of the bearing 6, and finally start the test component to drive the outer ring of the bearing 6 to rotate, the inner ring and outer ring of the bearing 6 produce relative displacement in the circumferential direction, and the friction torque of the bearing 6 can be measured.

[0021] In the utility model, by setting the first moving component and the pressure plate 4, a clamping force can be provided to the inner ring of the bearing 6; by setting the second moving component, a clamping force can be provided to the outer ring of the bearing 6; by using the utility model, the press-fitting condition of the bearing 6 can be simulated outside the RV reducer, and the friction torque of the bearing 6 under the simulated condition can be measured by the test component; the number of times the bearing 6 is disassembled and assembled on the RV reducer can be effectively reduced, thereby improving the assembly efficiency of the RV reducer.

[0022] Preferably, the device is installed vertically, and the bearing 6 to be tested is placed horizontally on the main body 1; the first motion component and the second motion component are located on both sides of the bearing 6 to be tested in the vertical direction.

[0023] Reference Figure 3 As shown, the first motion assembly includes: a telescopic component 21, which is arranged on the main body 1; the piston rod 22 of the telescopic component 21 is coaxially installed with the bearing 6, and the pressure plate 4 is detachably installed on the end of the piston rod 22 of the telescopic component 21.

[0024] In this embodiment, the telescopic component 21 is a hydraulic cylinder, which drives the piston rod 22 to perform linear translational motion along the axial direction of the bearing 6, thereby providing sufficient pressing force.

[0025] It is worth mentioning that the pressure plate 4 is detachably mounted on the piston rod 22 by means of screws.

[0026] Reference Figure 1 and Figure 2 As shown, the second motion component includes: a guide rail 31, which is arranged on the main body 1 and extends toward the bearing 6; a loading platform 32, which is movably arranged on the guide rail 31; a pressure-contact component, which is arranged on the loading platform 32 and is used to press the outer ring of the bearing 6; and a driving component, which is used to drive the loading platform 32 to move along the guide rail 31.

[0027] Specifically, the driving components include: a lead screw, which is installed parallel to the guide rail 31 and is transmission-connected to the loading platform 32; a displacement motor 36, which is transmission-connected to the lead screw; in actual work, the displacement motor 36 drives the lead screw to rotate, thereby driving the loading platform 32 to move along the guide rail 31, so as to move the pressing component close to the bearing 6 until the outer ring of the bearing 6 is pressed and a clamping force is provided to the outer ring of the bearing 6.

[0028] Specifically, the test assembly includes: a drive motor 51, which is arranged on the loading platform 32; a torque sensor 52, one end of which is connected to the drive motor 51 and the other end of which is connected to the pressure contact component. The pressure contact component includes: a mounting plate 33, which is connected to the torque sensor 52; a plurality of legs 34, which are detachably arranged on the mounting plate 33; and a latch 35, which is arranged on each leg 34 and is used to be inserted into the mounting hole on the outer ring of the bearing 6.

[0029] In actual work, the support foot 34 is used to press the outer ring of the bearing 6 and provide a clamping force to the outer ring of the bearing 6; by setting the pin 35, it can be inserted into the mounting hole on the outer ring of the bearing 6, and the rotation between the outer ring of the bearing 6 and the support foot 34 in the circumferential direction can be limited, ensuring that the drive motor 51 can drive the outer ring of the bearing 6 to rotate, and ensuring that the friction torque test process proceeds normally.

[0030] It is worth mentioning that both the drive motor 51 and the displacement motor 36 can be servo motors.

[0031] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the claims of the present invention, the present invention is also intended to include these modifications and variations.

Claims

1. A precision reducer bearing friction torque test device, characterized in that: include: Subject (1); A loading plate (11) is arranged on the main body (1) and is used to place the inner ring of the bearing (6); A first moving component is located on one side of the bearing (6), is capable of reciprocating along a straight line, and passes through the inner ring of the bearing (6); A pressure plate (4) is detachably arranged on the first moving component and is used to press the inner ring of the bearing (6); The second moving component is located on one side of the bearing (6) and is capable of reciprocating along a straight line to press against the outer ring of the bearing (6); The test assembly is transmission-connected to the second linear motion assembly and is used to drive the outer ring of the bearing (6) to rotate and measure the friction torque.

2. The precision reducer bearing friction torque test device according to claim 1 is characterized in that: The first motion component comprises: a telescopic component (21) arranged on the main body (1); a piston rod (22) of the telescopic component (21) is coaxially mounted with a bearing (6); and a pressure plate (4) is detachably mounted on the end of the piston rod (22) of the telescopic component (21).

3. The precision reducer bearing friction torque testing device according to claim 1 is characterized in that: The second motion assembly includes: A guide rail (31) is disposed on the main body (1) and extends toward the bearing (6); A loading platform (32) is movably disposed on the guide rail (31); A pressure contact component, arranged on the loading platform (32) and used for pressing the outer ring of the bearing (6); The driving component is used to drive the object loading platform (32) to move along the guide rail (31).

4. The precision reducer bearing friction torque test device according to claim 3 is characterized in that: The test components include: A driving motor (51) is disposed on the loading platform (32); The torque sensor (52) has one end transmission-connected to the drive motor (51) and the other end transmission-connected to the pressure contact component.

5. The precision reducer bearing friction torque test device according to claim 4 is characterized in that: The pressure contact parts include: A mounting plate (33) connected to a torque sensor (52); A plurality of supporting legs (34) are detachably arranged on the mounting plate (33); A latch pin (35) is provided on each support leg (34) and is used for inserting into a mounting hole on the outer ring of the bearing (6).

6. The precision reducer bearing friction torque test device according to claim 3, characterized in that: The drive components include: A lead screw is installed parallel to the guide rail (31) and is drivingly connected to the loading platform (32); The displacement motor (36) is drivingly connected to the lead screw.

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