Tandem thrust cylindrical roller bearing comprehensive performance test bench

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By introducing bearing housings and intermediate shafts into the tandem thrust cylindrical roller bearing test bench, the problem of axial loading force acting directly on the motor is solved, thus achieving motor protection and measurement accuracy, extending motor life, and improving the measurement precision of the test bench.

CN223756322UActive Publication Date: 2026-01-02LUOYANG STIRING INTELLIGENT TRANSMISSION CO LTD

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Patent Information

Application Number: CN202520394794.8
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-03-07
Publication Date: 2026-01-02
Estimated Expiration: 2035-03-07

AI Technical Summary

Technical Problem

In the prior art, the axial loading force of the shaft-type tandem thrust cylindrical roller bearing is directly applied to the drive motor, causing the motor to be damaged by the force.

Method used

A comprehensive performance test bench for tandem thrust cylindrical roller bearings was designed. By setting up a bearing housing and an intermediate shaft, the intermediate shaft connects the output shaft and the connecting shaft of the geared motor. The axial loading force is applied to the bearing housing, avoiding direct application to the geared motor. The axial deformation is measured by a displacement sensor. Oil injection holes and oil return holes are set to simulate the actual lubrication environment, ensuring measurement accuracy.

Benefits of technology

This avoids direct force damage to the geared motor, extends the motor's service life, and accurately measures axial deformation through displacement sensors, ensuring the measurement accuracy and reliability of the test bench.

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Abstract

The utility model relates to a tandem thrust cylindrical roller bearing comprehensive performance test bench which comprises a base, a test bin arranged on the base and a sleeve slidably arranged in the test bin, one end of the sleeve is open, the other end of the sleeve is provided with a guide shaft extending out of the test bin, and a tandem thrust cylindrical roller bearing is arranged in the sleeve. A connecting shaft of the serial thrust cylindrical roller bearing extends out of the test bin, and the end part of the connecting shaft is connected with a middle shaft; the test bin is provided with a displacement sensor which is in the axial direction of the sleeve and abuts against the open end of the sleeve; the base is provided with a bearing seat and an axial loading device for applying an axial load to the guide shaft, the intermediate shaft is rotatably arranged on the bearing seat in a penetrating manner, and the base is also provided with a driving device for driving the intermediate shaft to rotate. The axial loading force can act on the bearing seat and is prevented from directly acting on the gear motor, the gear motor is prevented from being damaged due to stress, and the service life of the gear motor is prolonged.

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Description

TECHNICAL FIELD

[0001] The utility model relates to bearing test technical field, especially a kind of tandem thrust cylindrical roller bearing comprehensive performance test bench. BACKGROUND

[0002] Tandem thrust cylindrical roller bearing is usually divided into three kinds: basic tandem thrust cylindrical roller bearing, sleeve type tandem thrust cylindrical roller bearing and with axle tandem thrust cylindrical roller bearing. Among them, with axle tandem thrust cylindrical roller bearing is provided with connecting shaft in basic tandem thrust cylindrical roller bearing, and locked by spring collar, and the end of connecting shaft is provided with keyway.

[0003] At present, for the test device of with axle tandem thrust cylindrical roller bearing, connecting shaft is directly connected with the output shaft of driving motor, and when axial loading test is carried out on with axle tandem thrust cylindrical roller bearing, the axial loading force will directly act on driving motor, which is easy to cause driving motor to be damaged by force. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the utility model provides a kind of tandem thrust cylindrical roller bearing comprehensive performance test bench.

[0005] The utility model provides the technical scheme that the above technical problems are solved: a kind of tandem thrust cylindrical roller bearing comprehensive performance test bench, including base, test bin being set on base and sleeve being slidably set in test bin, sleeve one end opening, the other end is equipped with the guide shaft that projects test bin, sleeve is equipped with tandem thrust cylindrical roller bearing, the connecting shaft of tandem thrust cylindrical roller bearing projects test bin and the end of connecting shaft is connected with intermediate shaft, test bin is equipped with displacement sensor along the axial direction of sleeve and with the end of sleeve opening resistance,

[0006] Base is equipped with bearing seat and axial loading device for applying axial load to guide shaft, intermediate shaft is rotatably arranged in bearing seat, and base is further equipped with driving device for driving intermediate shaft to rotate.

[0007] As preferred scheme, test bin is equipped with temperature sensor along the axial direction of sleeve and with the end of sleeve opening resistance.

[0008] As preferred scheme, the driving device includes mounting seat and reduction motor being arranged on mounting seat, and the output shaft of reduction motor is connected with intermediate shaft through coupling.

[0009] As preferred scheme, conical roller bearing is arranged between bearing seat and intermediate shaft.

[0010] As a preferred scheme, the connecting shaft has a mounting shaft section, and the end of the intermediate shaft is provided with a counterbore matched with the mounting shaft section, the mounting shaft section extends into the counterbore and is connected through a key.

[0011] As a preferred scheme, the axial loading device comprises a loading frame and a loading hydraulic cylinder arranged on the loading frame, and a piston rod of the loading hydraulic cylinder is arranged towards the guide shaft and is provided with a loading disc at an end thereof and abutting against the guide shaft.

[0012] As a preferred scheme, the test bin is provided with an annular groove at one end thereof facing the axial loading device, and a sealing ring is arranged in the annular groove and sleeved outside the guide shaft.

[0013] As a preferred scheme, the test bin is provided with a first oil injection hole at an upper end thereof, the sleeve is provided with a second oil injection hole in communication with the first oil injection hole, the diameter of the second oil injection hole is larger than that of the first oil injection hole, the test bin is provided with an oil return hole at a lower end thereof, and the oil return hole is connected with an oil return tank through an oil return pipe.

[0014] As a preferred scheme, the test bin comprises an upper shell and a lower shell arranged symmetrically in an up-down direction, and the upper shell and the lower shell are fixedly connected through bolts.

[0015] The application has the following beneficial effects: 1. The bearing seat and the intermediate shaft rotatably penetrating the bearing seat are arranged, the intermediate shaft serves to connect the output shaft of the speed reducer and the connecting shaft, the axial loading force is applied to the bearing seat, the speed reducer is not directly subjected to the force, the speed reducer is not damaged by the force, and the service life of the speed reducer is prolonged.

[0016] 2. The displacement sensor is arranged, the axial deformation of the measured tandem thrust cylindrical roller bearing is fed back to the displacement sensor through the sleeve, and thus the axial elastic deformation and plastic deformation of the measured tandem thrust cylindrical roller bearing under the static load can be obtained.

[0017] 3. The first oil injection hole and the second oil injection hole are arranged, so that the measured tandem thrust cylindrical roller bearing can simulate the operation in the actual lubricating oil working environment, and the measurement accuracy is ensured.

[0018] 4. The oil return hole and the oil return tank are arranged, the lubricating oil can be recycled and reused after filtration. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the application;

[0020] Figure 2 It is a front view of Figure 1 ; It is an A-A sectional view of

[0021] Figure 3 It is a front view of Figure 2 ;

[0022] Figure 4 It is the structural schematic view of the bearing seat of the utility model.

[0023] Marked in the drawing: 1, base, 2, axial loading device, 21, loading frame, 22, loading hydraulic cylinder, 23, loading disc, 3, test bin, 31, upper shell, 32, lower shell, 33, first oil hole, 34, oil return hole, 4, bearing seat, 41, tapered roller bearing, 42, end cover, 5, driving device, 51, mounting seat, 52, speed reducer motor, 6, intermediate shaft, 61, first connecting shaft section, 62, counterbore, 63, second connecting shaft section, 64, mounting shaft section, 641, annular stop, 7, tandem thrust cylindrical roller bearing, 71, connecting shaft, 711, mounting shaft section, 8, displacement sensor, 9, temperature sensor, 10, sleeve, 101, guide shaft, 102, second oil hole. DETAILED DESCRIPTION

[0024] In order to make the utility model purposes, technical scheme and advantages more clearly, the following will be combined with the drawings and examples, and the utility model will be further described in detail.It should be understood that, in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model.In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] Please refer to Figures 1-4 , the utility model embodiment provides a kind of tandem thrust cylindrical roller bearing comprehensive performance test bench, including base 1, test bin 3 being set on base 1 and sleeve 10 being slidably arranged in test bin 3, sleeve 10 one end opening, the other end is equipped with the guide shaft 101 of the test bin 3, sleeve 10 is equipped with tandem thrust cylindrical roller bearing 7, the connecting shaft 71 of tandem thrust cylindrical roller bearing 7 is connected with intermediate shaft 6, and the end of connecting shaft 71 is connected with intermediate shaft 6, and test bin 3 is equipped with displacement sensor 8 along the axial direction of sleeve 10 and the end of sleeve 10 and is in contact;Base 1 is equipped with bearing seat 4 and axial loading device 2 for applying axial load to guide shaft 101, and intermediate shaft 6 is rotatably arranged in bearing seat 4, and base 1 is also equipped with driving device 5 for driving intermediate shaft 6 to rotate.

[0026] Among them, combined with Figure 3As shown, the test bin 3 is provided with a temperature sensor 9 axially along the sleeve 10 and abutting against one end of the sleeve 10. The temperature of the sleeve 10 is measured by the temperature sensor 9, and the temperature of the tandem thrust cylindrical roller bearing 7 is indirectly obtained. It should be noted that the parts not described in detail in the present application are all prior art.

[0027] In combination Figures 1-3 As shown, the driving device 5 includes a mounting seat 51 and a speed reducer motor 52 arranged on the mounting seat 51, and the output shaft of the speed reducer motor 52 is connected with the intermediate shaft 6 through a shaft coupling. The bearing seat 4 and the intermediate shaft 6 are provided with a tapered roller bearing 41.

[0028] The end of the bearing seat 4 towards the speed reducer motor 52 is provided with an end cover 42 connected with the bearing seat 4 through fixing bolts, and the tapered roller bearing 41 is rotatably arranged in the speed reducer motor 52. The intermediate shaft 6 includes a first connecting shaft segment 61, a mounting shaft segment 64 and a second connecting shaft segment 63 connected in sequence along the axial direction, the diameters of the first connecting shaft segment 61, the second connecting shaft segment 63 and the mounting shaft segment 64 increase in sequence, the first connecting shaft segment 61, the second connecting shaft segment 63 and the mounting shaft segment 64 are integrally made, the tapered roller bearing 41 is sleeved on the mounting shaft segment 64, the mounting shaft segment 64 is provided with an annular stop portion 641 abutting against the inner ring of the tapered roller bearing 41, and the inner side of the end cover 42 is provided with an annular protrusion portion abutting against the outer ring of the tapered roller bearing 41.

[0029] Specifically, the connecting shaft 71 has a mounting shaft segment 711 located at the end of the connecting shaft 71 towards the speed reducer motor 52, the end of the intermediate shaft 6 is provided with a counterbore 62 matched with the mounting shaft segment 711, the mounting shaft segment 711 extends into the counterbore 62 and is connected through a key. The counterbore 62 is provided with a first key groove matched with the key, and the mounting shaft segment 711 is provided with a second key groove matched with the key. The bottom of the sleeve 10 is provided with a let-out counterbore, and the end of the connecting shaft 71 away from the mounting shaft segment 711 extends into the let-out counterbore and does not contact the bottom and the inner side wall of the let-out counterbore.

[0030] More specifically, the axial loading device 2 includes a loading frame 21 and a loading hydraulic cylinder 22 arranged on the loading frame 21, the piston rod of the loading hydraulic cylinder 22 is towards the guide shaft 101 and the end thereof is provided with a loading disc 23 abutting against the guide shaft 101. The end of the test bin 3 towards the axial loading device 2 is provided with an annular counterbore, and the annular counterbore is provided with a sealing ring sleeved on the outer side of the guide shaft 101.

[0031] In addition, the first oil injection hole 33 is arranged at the upper end of the test bin 3, the second oil injection hole 102 is arranged at the sleeve 10 and is communicated with the first oil injection hole 33, the diameter of the second oil injection hole 102 is larger than that of the first oil injection hole 33, the oil return hole 34 is arranged at the lower end of the test bin 3, and the oil return hole 34 is connected with the oil return tank through the oil return pipe. The lubricating oil can be injected into the first oil injection hole 33 through the oil pipe. The test bin 3 comprises the upper shell 31 and the lower shell 32 which are symmetrically arranged in the up-down direction, and the upper shell 31 and the lower shell 32 are fixedly connected through the bolts. The upper shell 31 and the lower shell 32 are identical in structure and size, the first oil injection hole 33 is arranged at the upper shell 31, and the oil return hole 34 is arranged at the lower shell 32. The base 1 is rectangular, and the lower end of the lower shell 32 is provided with two positioning mounting frames which are oppositely arranged along the width direction of the base 1.

[0032] In use, the tandem thrust cylindrical roller bearing 7 is arranged in the sleeve 10, the connecting shaft 71 is connected with the intermediate shaft 6, the axial loading device 2 can exert the axial load on the guide shaft 101, the driving device 5 drives the intermediate shaft 6 to rotate, so that the connecting shaft 71 rotates, and then the tandem thrust cylindrical roller bearing 7 can operate under the action of the axial load. The axial deformation amount of the tandem thrust cylindrical roller bearing 7 is fed back to the displacement sensor 8 through the sleeve, so that the axial elastic deformation and plastic deformation amount of the tandem thrust cylindrical roller bearing 7 under the action of the static load can be obtained. The lubricating oil can be injected into the first oil injection hole 33 and the second oil injection hole 102 through the oil pipe, so that the tandem thrust cylindrical roller bearing 7 can simulate the operation in the actual lubricating oil working environment, and the measurement accuracy is ensured.

[0033] Of course, the utility model is not limited to the above-mentioned embodiment, and several other embodiments based on the design concept of the utility model are provided below.

[0034] For example, in other embodiments, the mounting shaft section 711 is provided with a spline, and the counterbore 62 is provided with a spline groove matched with the spline.

[0035] It should be noted that the above examples are only used to illustrate the utility model, but the utility model is not limited to the above examples, and any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above examples all fall within the protection scope of the utility model.

Claims

1. A test rig for comprehensive performance of tandem thrust cylindrical roller bearings, characterized in that The utility model relates to a test device for testing the axial load capacity of a string of thrust cylindrical roller bearings, comprising a base (1), a test chamber (3) arranged on the base (1), and a sleeve (10) slidingly arranged in the test chamber (3), the sleeve (10) having an open end and a guide shaft (101) extending out of the test chamber (3) at the other end, the sleeve (10) being provided with a string of thrust cylindrical roller bearings (7), the connecting shaft (71) of the string of thrust cylindrical roller bearings (7) extending out of the test chamber (3) and being connected to an intermediate shaft (6) at the end of the connecting shaft (71), the test chamber (3) being provided with a displacement sensor (8) arranged along the axial direction of the sleeve (10) and abutting against the open end of the sleeve (10), The base (1) is provided with a bearing seat (4) and an axial loading device (2) for applying an axial load to the guide shaft (101), the bearing seat (4) and the intermediate shaft (6) being rotatably arranged in the bearing seat (4), and the base (1) being further provided with a driving device (5) for driving the intermediate shaft (6) to rotate.

2. The test rig for the comprehensive performance of tandem thrust cylindrical roller bearings according to claim 1, characterized in that The test chamber (3) is provided with a temperature sensor (9) arranged along the axial direction of the sleeve (10) and abutting against the open end of the sleeve (10).

3. The test rig for a tandem cylindrical roller bearing according to claim 1, characterized in that: The driving device (5) comprises a mounting seat (51) and a speed reducer motor (52) arranged on the mounting seat (51), and the output shaft of the speed reducer motor (52) is connected to the intermediate shaft (6) through a shaft coupling.

4. The test rig for a tandem cylindrical roller bearing according to claim 3, characterized in that: A tapered roller bearing (41) is arranged between the bearing seat (4) and the intermediate shaft (6).

5. The test rig for a tandem cylindrical roller bearing according to claim 4, characterized in that: The connecting shaft (71) has a mounting shaft section (711), and the end of the intermediate shaft (6) is provided with a counterbore (62) matched with the mounting shaft section (711), the mounting shaft section (711) extending into the counterbore (62) and being connected through a key.

6. The test rig for a tandem thrust cylindrical roller bearing according to claim 1, characterized in that: The axial loading device (2) comprises a loading frame (21) and a loading hydraulic cylinder (22) arranged on the loading frame (21), the piston rod of the loading hydraulic cylinder (22) facing the guide shaft (101) and being provided with a loading disc (23) abutting against the guide shaft (101) at the end.

7. The test rig for a tandem thrust cylindrical roller bearing according to claim 1, characterized in that: The end of the test chamber (3) facing the axial loading device (2) is provided with an annular sink, and the annular sink is provided with a sealing ring sleeved outside the guide shaft (101).

8. The test rig for a tandem thrust cylindrical roller bearing according to claim 1, characterized in that: The upper end of the test chamber (3) is provided with a first oil injection hole (33), the sleeve (10) is provided with a second oil injection hole (102) in communication with the first oil injection hole (33), the diameter of the second oil injection hole (102) is greater than that of the first oil injection hole (33), the lower end of the test chamber (3) is provided with an oil return hole (34), and the oil return hole (34) is connected to an oil return tank through an oil return pipe.

9. The serial thrust cylindrical roller bearing comprehensive performance test bench according to claim 1, characterized in that: The test chamber (3) comprises an upper shell (31) and a lower shell (32) arranged symmetrically, and the upper shell (31) and the lower shell (32) are fixedly connected through bolts.