Super-huge turntable bearing rigidity testing device

Abstract

The utility model belongs to the technical field of bearing testing, and relates to an oversize turntable bearing rigidity testing device. The related testing device is provided with a testing platform. A driving assembly which is connected with the test bearing inner ring and drives the test bearing inner ring to rotate is placed on the test platform; the driving assembly is provided with a transition flange connected with the inner ring of the test bearing; the transition flange plate is supported on the test platform through a driving bearing; a loading arm is arranged above the transition flange plate; the loading arm is connected with the outer ring of the test bearing; a radial oil cylinder is arranged at one end of the loading arm; and an axial oil cylinder and an overturning oil cylinder are also arranged corresponding to the loading arm. According to the utility model, the rigidity of the bearing can be tested under the action of different axial forces, radial forces and overturning moments, so that the change of the rigidity of the bearing can be analyzed and tested under the influence of various working conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing testing, and in particular relates to a super-large turntable bearing stiffness testing device. Background Art

[0002] Extra-large turntable bearings can withstand large overturning moments, axial forces and radial forces, and can realize the yaw, pitch, roll and other postures of various carriers. Their stiffness directly affects the dynamic and vibration characteristics of the equipment, thereby affecting the reliability of the equipment; therefore, it is very important and necessary to accurately and conveniently obtain the stiffness of extra-large turntable bearings through testing methods.

[0003] The domestic stiffness test method for extra-large turntable bearings is: fix the outer ring of the bearing, use the loading rod to cooperate with the inner ring of the bearing, use the lever to apply the load, and the inner ring of the bearing is subjected to axial load on one side to achieve the purpose of testing the overturning moment stiffness; fix the outer ring of the bearing, and add weights to the inner ring to test the axial stiffness. Radial stiffness testing cannot be achieved without testing equipment.

[0004] Due to the limitations of structure and measurement methods, its disadvantages are: (1) the load is applied unevenly; (2) it is impossible to measure multiple sets of continuous data, and the data error is large, which affects the test accuracy. Summary of the invention

[0005] The utility model aims to provide a super large turntable bearing stiffness testing device to solve the difficulties in the existing large turntable bearing stiffness testing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A super-large turntable bearing stiffness testing device, the testing device has a testing platform; a driving component connected to the inner ring of the test bearing and driving the inner ring of the test bearing to rotate is placed on the testing platform; the driving component has a transition flange connected to the inner ring of the test bearing; the transition flange is supported on the testing platform through a driving bearing; a loading arm is placed above the transition flange; the loading arm is arranged horizontally; the loading arm is connected to the outer ring of the test bearing to achieve the purpose of loading the outer ring of the test bearing; a radial cylinder is arranged at one end of the loading arm; an axial cylinder and an overturning cylinder are also arranged corresponding to the loading arm; the axial cylinder and the overturning cylinder are both two: axial cylinder I, axial cylinder II, overturning cylinder I, overturning cylinder II, and the axial cylinder I, axial cylinder II, overturning cylinder I, overturning cylinder II are symmetrically arranged on both sides of the testing platform; the loading arm, axial cylinder I, axial cylinder II, overturning cylinder I, overturning cylinder II, and radial cylinders together constitute a loading component for realizing overturning moment loading, axial loading, and radial loading.

[0008] The driving assembly also includes a motor and a driving pinion.

[0009] The axial cylinders I and II achieve the function of synchronously loading the axial force through a hydraulic pipeline, which is represented by Fa.

[0010] The loading of the radial cylinder is represented by Fr. The cylinder acts in the radial direction of the loading arm and achieves the purpose of radial loading through force transmission. The loading forces of the overturning cylinder I and overturning cylinder II are represented by F1 and F2.

[0011] The utility model provides an extra-large turntable bearing stiffness testing device, which can test the stiffness of the bearing under the action of different axial forces, radial forces and overturning moments, so as to analyze the change of the stiffness of the test bearing under the influence of various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the overall schematic diagram of the bearing stiffness testing device of the utility model;

[0013] Figure 2 This is a structural diagram of the drive assembly of the bearing stiffness testing device of the utility model.

[0014] Figure 3 This is a structural diagram of the loading component of the bearing stiffness testing device of the utility model.

[0015] In the figure: 1. Drive assembly; 2. Test bearing outer ring; 3. Test bearing inner ring; 4. Loading assembly; 5. Motor; 6. Drive pinion; 7. Drive bearing; 8. Transition flange; 9. Loading arm; 10. Radial cylinder; 11. Tilt cylinder I; 12. Axial cylinder I; 13. Axial cylinder II; 14. Tilt cylinder II. DETAILED DESCRIPTION

[0016] The features and performance of the present invention are further described in detail below in conjunction with the embodiments and drawings.

[0017] like Figure 1 As shown, the utility model provides an extra-large turntable bearing stiffness testing device, comprising a driving component 1, a test bearing outer ring 2, a test bearing inner ring 3, and a loading component 4; the driving component 1 drives the test bearing inner ring 3 to rotate at a low speed to change the relative position of the test bearing inner ring and outer ring.

[0018] Combination Figure 2 The driving assembly 1 includes a motor 5, a driving pinion 6, a driving bearing 7, and a transition flange 8; the motor 5 is connected to the driving pinion 6 by an expansion sleeve, and the teeth on the outer ring of the driving pinion 6 and the driving bearing 7 drive the outer ring of the driving bearing to rotate through gear transmission, thereby driving the transition flange 8 to rotate.

[0019] Combination Figure 3 The loading assembly 3 includes a loading arm 9, a radial cylinder 10, a tilting cylinder I11, an axial cylinder I12, an axial cylinder II13, and a tilting cylinder II14; wherein the tilting cylinder I11 and the tilting cylinder II14 are fixed to the ground and are respectively arranged on both sides of the loading arm 9, the tilting cylinder I11 is a pulling cylinder, and the magnitude of the loading force F1 generated by the tilting cylinder I11 is adjusted by a hydraulic system proportional valve; the tilting cylinder II14 is a pressing cylinder, and the magnitude of the loading force F2 generated by the tilting cylinder II14 is adjusted by a hydraulic system proportional valve; the loading force F1 and the loading force F2 work together to generate a tilting moment on the test bearing.

[0020] Among them, the axial cylinder I12 and the axial cylinder II13 are arranged on both sides of the loading arm 9, on the inner side of the overturning cylinder I11 and the overturning cylinder II14, and the axial cylinder I12 and the axial cylinder II13 are both pulling cylinders; the size of the axial loading force Fa jointly generated by the axial cylinder I12 and the axial cylinder II13 is adjusted by the hydraulic system proportional valve.

[0021] The radial oil cylinder 10 is arranged on the side of the loading arm 9. The radial oil cylinder 10 is a pulling cylinder. The magnitude of the loading force Fr generated by the radial oil cylinder 10 is adjusted by a hydraulic system proportional valve.

[0022] When testing the overturning moment stiffness of the extra-large turntable bearing, the driving assembly drives the inner ring of the test bearing to the required position. In a stationary state, install the dial gauge holder on the transition flange on the driving assembly, with the needle pointing to the lower end face of the test bearing, input the overturning moment value as required, and the two sets of overturning cylinders generate overturning forces F1 and F2, and read the dial gauge readings and record them.

[0023] When testing the axial stiffness of a super-large turntable bearing, the drive assembly drives the inner ring of the test bearing to the required position. In a stationary state, install the dial gauge holder on the transition flange on the drive assembly, with the needle pointing to the lower end face of the test bearing, apply an axial load Fa according to the required value, read the dial gauge reading and record it.

[0024] When testing the radial stiffness of a super-large turntable bearing, the drive assembly drives the inner ring of the test bearing to the required position. In a stationary state, install the dial gauge holder on the transition flange on the drive assembly, with the needle pointing to the radial surface of the test bearing, apply the overturning moment according to the required value, read the dial gauge reading and record it.

[0025] The above is a preferred embodiment of the present invention, but those skilled in the art should understand that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the attached claims specification are within the scope of protection of the present invention.

Claims

1. A super-large turntable bearing stiffness testing device, characterized in that: The testing device comprises a testing platform; a driving component connected to the inner ring of the testing bearing and driving the inner ring of the testing bearing to rotate is placed on the testing platform; the driving component comprises a transition flange connected to the inner ring of the testing bearing; the transition flange is supported on the testing platform through a driving bearing; a loading arm is placed above the transition flange; the loading arm is arranged horizontally; the loading arm is connected to the outer ring of the testing bearing; a radial cylinder is arranged at one end of the loading arm; an axial cylinder and a tilting cylinder are also arranged corresponding to the loading arm; there are two axial cylinders and two tilting cylinders: axial cylinder I, axial cylinder II, tilting cylinder I, and tilting cylinder II, and the axial cylinders I, axial cylinder II, tilting cylinder I, and tilting cylinder II are symmetrically arranged on both sides of the testing platform; the loading arm, axial cylinder I, axial cylinder II, tilting cylinder I, tilting cylinder II, and radial cylinders together constitute a loading component for realizing tilting moment loading, axial loading, and radial loading.

2. The super-large turntable bearing stiffness testing device according to claim 1, characterized in that: The axial cylinder I and axial cylinder II are arranged inside the overturning cylinder I and overturning cylinder II, and both axial cylinder I and axial cylinder II are pulling cylinders; the magnitude of the axial loading force Fa jointly generated by the axial cylinder I (12) and axial cylinder II (13) is adjusted by a hydraulic system proportional valve.

Images