CN215640140U

CN215640140U - Vertical loading antifriction bearing life-span test experiment platform

Info

Publication number: CN215640140U
Application number: CN202120812809.XU
Authority: CN
Inventors: 李长根; 高宏力; 郭亮; 由志超
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2022-01-25
Anticipated expiration: 2031-04-20

Abstract

The utility model discloses a service life test experiment table for a vertical loading rolling bearing, which comprises an experiment table and an experiment device arranged on the experiment table; the rolling bearing reliability under variable working conditions or various working conditions is tested by simulating various rotating speeds and load working conditions through the speed regulating motor and the experimental device; the experiment table has compact structure, few parts, high operation reliability and high stability; the bearing frame is designed into a split structure, so that on one hand, the installation of the bearing and a fastener thereof is facilitated, on the other hand, the bearing is provided for the transmission shaft and the test bearing, and the condition that the transmission shaft is subjected to fatigue fracture under the action of long-time stress due to the fact that a plurality of test experiment tables design the shaft section of the loading part into a cantilever beam is avoided; therefore, the experimental table is very suitable for colleges and universities, scientific research institutions and manufacturing enterprises for researching the reliability of the bearing; the method has positive significance for the reliability research of the rolling bearing.

Description

Vertical loading antifriction bearing life-span test experiment platform

Technical Field

The utility model relates to the technical field of reliability tests of key parts of mechanical equipment, in particular to a service life test experiment table for a vertical loading rolling bearing.

Background

The bearing bears the tasks of supporting the shafting and ensuring the smooth and steady operation of the machine in the working process of the rotating equipment. Nowadays, bearings are widely used in various fields as a basic component of mechanical equipment. The dependence of various mechanical devices on standard bearings and non-standard bearings is also rapidly increasing. On one hand, the bearing gradually becomes one of the key parts of the mechanical equipment, and on the other hand, the bearing also becomes one of the weakest parts in the process of ensuring the stable and reliable operation of the mechanical equipment, and is the largest cause of mechanical failure of the mechanical equipment, so that the normal operation of the bearing is very important for the stable operation of the mechanical equipment. There are data indicating that more than 40% of mechanical failures occur in connection with rolling bearings. Therefore, the deep research on the operational reliability of the bearing has important practical and theoretical significance.

Traditional antifriction bearing life-span test experiment table exists that the structure is complicated, and manufacturing cost is high, and operational reliability is low, and volume weight is big to traditional experiment table is comparatively troublesome when transportation and installation, for this reason we propose a vertical loading antifriction bearing life-span test experiment table and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the prior art is complex in structure, high in manufacturing cost, low in operation reliability, large in volume and weight and the traditional experiment table is troublesome to transport and install, and provides a service life test experiment table for a vertical loading rolling bearing.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a service life test experiment table for a vertical loading rolling bearing comprises an experiment table and an experiment device arranged on the experiment table;

the experimental device comprises a speed regulating motor, a quincunx elastic coupling, a transmission shaft, a clamping mechanism and a simulation mechanism; the output shaft of the speed regulating motor is connected with one end of the transmission shaft through the quincunx elastic coupling;

the clamping mechanism comprises a bearing frame upper half ring, a bearing frame lower half ring and a fourth bolt; the top of the upper half ring of the bearing frame is attached to the bottom of the lower half ring of the bearing frame; the fourth bolt penetrates through the top of the upper half ring of the bearing frame and extends to seat the bottom of the lower half ring of the bearing frame; the bearing frame lower half ring and the bearing frame upper half ring are connected through the fourth bolt;

the simulation mechanism comprises a driving assembly, a deep groove ball bearing, a screw locking retainer ring and a hole elastic retainer ring; one end of the inner side wall of the deep groove ball bearing is attached to the outer side wall of the screw locking check ring, and one end of the outer side wall of the deep groove ball bearing is attached to the outer side wall of the hole elastic check ring; the circlip for the hole is arranged on the outer side wall of the screw locking circlip.

Preferably, the drive assembly comprises a hand wheel, a force transmission pin and a threaded small shaft; the inner side wall of the bottom of the hand wheel is fixedly connected with the outer side wall of the top of the force transmission pin; the bottom of the force transmission pin is fixedly connected with the top of the small threaded shaft, and the bottom of the small threaded shaft is attached to the top of the deep groove ball bearing.

Preferably, the laboratory table comprises a laboratory table base plate; the bottom of laboratory bench bottom plate is laminated with oily sleeper mutually, the top of laboratory bench bottom plate is provided with self-tapping screw, self-tapping screw runs through the top of laboratory bench bottom plate and extends to the inside of oily sleeper, the bottom of laboratory bench bottom plate is provided with first bolt, the bottom of laboratory bench bottom plate is provided with the second bolt, the bottom of laboratory bench bottom plate is provided with the third bolt, the top of laboratory bench bottom plate is laminated mutually has the spherical outside bearing of taking the seat, the laboratory bench bottom plate with the spherical outside bearing of taking the seat passes through the second bolt is connected.

Preferably, the speed regulating motor is connected with the experiment table bottom plate through the third bolt, and the bearing frame lower half ring is connected with the experiment table bottom plate through the first bolt.

Preferably, the outer side wall of the transmission shaft is movably connected with the inner side wall of the outer spherical bearing with the seat, the transmission shaft can freely rotate on the inner side wall of the outer spherical bearing with the seat, and the outer side wall of the end part of the transmission shaft is attached to the other end of the inner side wall of the deep groove ball bearing.

Preferably, deep groove ball bearing sets up the inside of semi-ring on the pedestal with the semi-ring under the pedestal, screw locking retaining ring sets up the inside of semi-ring on the pedestal with the semi-ring under the pedestal, circlip for the hole sets up the inside of semi-ring on the pedestal with the semi-ring under the pedestal, the lateral wall of little axle of screw thread with the top swing joint of semi-ring on the pedestal, little axle of screw thread with the semi-ring passes through threaded connection on the pedestal.

Compared with the prior art, the utility model has the beneficial effects that: the rolling bearing reliability under variable working conditions or various working conditions is tested by simulating various rotating speeds and load working conditions through the speed regulating motor and the experimental device; the experiment table has compact structure, few parts, high operation reliability and high stability; the parts of the experiment table mainly adopt standard parts, the related non-standard parts are simpler in structure, and the requirements on the manufacturing process are lower, so that the manufacturing cost is low, and the economy is good; the bearing frame is designed into a split structure, so that on one hand, the installation of the bearing and a fastener thereof is facilitated, on the other hand, the bearing is provided for the transmission shaft and the test bearing, and the condition that the transmission shaft is subjected to fatigue fracture under the action of long-time stress due to the fact that a plurality of test experiment tables design the shaft section of the loading part into a cantilever beam is avoided; therefore, the experimental table is very suitable for colleges and universities, scientific research institutions and manufacturing enterprises for researching the reliability of the bearing; the method has positive significance for the reliability research of the rolling bearing.

Drawings

FIG. 1 is a schematic front structural view of a life test experiment table for a vertical loading rolling bearing according to the present invention;

fig. 2 is a structural schematic diagram of a testing part of the vertical loading rolling bearing life testing experiment table provided by the utility model.

In the figure: the test bench comprises a speed regulating motor 1, a quincunx elastic coupling 2, a spherical outside bearing with a seat 3, a transmission shaft 4, a deep groove ball bearing 5, a screw locking retainer ring 6, an elastic retainer ring for 7 holes, a small screw shaft 8, an upper half ring of a bearing frame 9, a force transmission pin 10, a hand wheel 11, a first bolt 12, a lower half ring of the bearing frame 13, a second bolt 14, an oil-immersed sleeper 15, a self-tapping screw 16, a third bolt 17, a fourth bolt 18 and a test bench bottom plate 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a vertical loading rolling bearing life test experiment table comprises an experiment table and an experiment device arranged on the experiment table;

the experimental device comprises a speed regulating motor 1, a quincunx elastic coupling 2, a transmission shaft 4, a clamping mechanism and a simulation mechanism; an output shaft of the speed regulating motor 1 is connected with one end of a transmission shaft 4 through a quincunx elastic coupling 2;

the clamping mechanism comprises a bearing frame upper half ring 9, a bearing frame lower half ring 13 and a fourth bolt 18; the top of the upper half ring 9 of the bearing frame is attached to the bottom of the lower half ring 13 of the bearing frame; a fourth bolt 18 penetrates through the top of the upper half ring 9 of the bearing frame and extends to the bottom of the lower half ring 13 of the bearing frame; the bearing frame lower half ring 13 is connected with the bearing frame upper half ring 9 through a fourth bolt 18;

the simulation mechanism comprises a driving assembly, a deep groove ball bearing 5, a screw locking retainer ring 6 and a hole elastic retainer ring 7; one end of the inner side wall of the deep groove ball bearing 5 is attached to the outer side wall of the screw locking retainer ring 6, and one end of the outer side wall of the deep groove ball bearing 5 is attached to the outer side wall of the hole elastic retainer ring 7; the circlip for hole 7 is provided on the outer side wall of the screw lock collar 6.

Wherein, the driving component comprises a hand wheel 11, a force transmission pin 10 and a small threaded shaft 8; the inner side wall of the bottom of the hand wheel 11 is fixedly connected with the outer side wall of the top of the force transmission pin 10; the bottom of the force transmission pin 10 is fixedly connected with the top of the small threaded shaft 8, and the bottom of the small threaded shaft 8 is attached to the top of the deep groove ball bearing 5.

Wherein the experiment table comprises an experiment table bottom plate 19; the bottom of laboratory bench bottom plate 19 is laminated with oily sleeper 15, the top of laboratory bench bottom plate 19 is provided with self-tapping screw 16, self-tapping screw 16 runs through the top of laboratory bench bottom plate 19 and extends to the inside of oily sleeper 15, the bottom of laboratory bench bottom plate 19 is provided with first bolt 12, the bottom of laboratory bench bottom plate 19 is provided with second bolt 14, the bottom of laboratory bench bottom plate 19 is provided with third bolt 17, the top of laboratory bench bottom plate 19 is laminated mutually and has area seat insert bearing 3, laboratory bench bottom plate 19 is connected through second bolt 14 with area seat insert bearing 3.

Wherein, the adjustable speed motor 1 is connected with the experiment table bottom plate 19 through a third bolt 17, and the bearing bracket lower half ring 13 is connected with the experiment table bottom plate 19 through a first bolt 12.

Wherein, the lateral wall of transmission shaft 4 and the inside wall swing joint of taking seat insert bearing 3, transmission shaft 4 can be in the free rotation on the inside wall of taking seat insert bearing 3, and the lateral wall of 4 tip of transmission shaft is laminated with the other end of 5 inside walls of deep groove ball bearing.

Wherein, deep groove ball bearing 5 sets up in the inside of semi-ring 9 on the bearing bracket and semi-ring 13 under the bearing bracket, and screw locking retaining ring 6 sets up in the inside of semi-ring 9 on the bearing bracket and semi-ring 13 under the bearing bracket, and circlip 7 for the hole sets up in the inside of semi-ring 9 on the bearing bracket and semi-ring 13 under the bearing bracket, and the top swing joint of semi-ring 9 on the lateral wall of little axle of screw thread 8 and the bearing bracket, and little axle of screw thread 8 and semi-ring 9 on the bearing bracket pass through threaded connection.

In the utility model, the output shaft end of a speed regulating motor 1 is connected with a transmission shaft 4 through a quincunx elastic coupling 2 to transmit torque and rotating speed; the transmission shaft 4 is supported by two series of spherical outside bearings 3 with seats and the serial number of UCP; the output end journal of the transmission shaft 4 is in transition fit or interference fit with the inner ring of the deep groove ball bearing 5; the deep groove ball bearing 5 is axially positioned by closely attaching the left end surface of the inner ring to the shaft shoulder at the output end of the transmission shaft 4, and then the right end surface of the inner ring is closely attached to the left end surface of the screw locking check ring 6 to axially fasten the inner ring of the bearing; the outer ring cylindrical surface of the deep groove ball bearing 5 is tightly attached to the upper half ring 9 and the lower half ring 13 of the bearing frame; the bearing frame upper half ring 9 and the bearing frame lower half ring 13 are connected through a fourth bolt 18 to form a bearing outer ring positioning and clamping mechanism similar to a split bearing seat; the left end surface of the outer ring of the deep groove ball bearing 5 is tightly attached to the step surface of the bearing outer ring positioning and clamping mechanism to realize the axial positioning of the outer ring, and the right end surface of the outer ring of the deep groove ball bearing 5 is attached to a hole embedded into the annular groove of the outer ring positioning and clamping mechanism by using an elastic retainer ring 7 to control the axial movement of the outer ring of the bearing; the bearing frame upper semi-ring 9 is provided with a threaded hole and is matched with a threaded small shaft 8 to load the bearing outer ring; the loading is realized by the contact of the end surface of the small threaded shaft 8 and the cylindrical surface of the outer ring of the bearing, and is used for simulating the condition of radial load of the bearing; the thread lead angle on the small threaded shaft 8 enables the small shaft to have self-locking capacity so as to prevent the threaded shaft from loosening due to the vibration of the experiment table; the upper end of the small threaded shaft 8 is connected with a hand wheel 11 through a force transmission pin 10 so as to transmit the torque of the hand wheel 11 to the small threaded shaft 8; on the other hand, the rotation of the hand wheel is converted into the axial movement of the small threaded shaft 8 through the threads; the bearing frame lower half ring 13 is fixed with the experiment table bottom plate 19 through a first bolt 12; the bearing seat of the spherical outside bearing 3 with the seat is fixed with the bottom plate 19 of the experiment table through a second bolt 14; the speed regulating motor 1 is fixed with a bottom plate 19 of the experiment table through a third bolt 17; the experiment table bottom plate 19 is connected with the oil-immersed sleeper 15 through the self-tapping screw 16 so as to achieve the damping effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A vertical loading rolling bearing life test experiment table is characterized by comprising an experiment table and an experiment device arranged on the experiment table;

the experimental device comprises a speed regulating motor (1), a quincunx elastic coupling (2), a transmission shaft (4), a clamping mechanism and a simulation mechanism; an output shaft of the speed regulating motor (1) is connected with one end of the transmission shaft (4) through the quincunx elastic coupling (2);

the clamping mechanism comprises a bearing frame upper half ring (9), a bearing frame lower half ring (13) and a fourth bolt (18); the top of the upper half ring (9) of the bearing frame is attached to the bottom of the lower half ring (13) of the bearing frame; the fourth bolt (18) penetrates through the top of the upper half ring (9) of the bearing frame and extends to seat the bottom of the lower half ring (13) of the bearing frame; the bearing frame lower half ring (13) is connected with the bearing frame upper half ring (9) through the fourth bolt (18);

the simulation mechanism comprises a driving assembly, a deep groove ball bearing (5), a screw locking retainer ring (6) and a hole elastic retainer ring (7); one end of the inner side wall of the deep groove ball bearing (5) is attached to the outer side wall of the screw locking retainer ring (6), and one end of the outer side wall of the deep groove ball bearing (5) is attached to the outer side wall of the hole elastic retainer ring (7); the hole elastic retainer ring (7) is arranged on the outer side wall of the screw locking retainer ring (6).

2. The vertical loading rolling bearing life test experiment table according to claim 1, wherein the driving assembly comprises a hand wheel (11), a force transmission pin (10) and a threaded small shaft (8); the inner side wall of the bottom of the hand wheel (11) is fixedly connected with the outer side wall of the top of the force transmission pin (10); the bottom of the force transmission pin (10) is fixedly connected with the top of the small threaded shaft (8), and the bottom of the small threaded shaft (8) is attached to the top of the deep groove ball bearing (5).

3. A vertical loading rolling bearing life test bench according to claim 1, characterized in that the bench comprises a bench bottom plate (19); the utility model discloses a take seat insert bearing, including experiment table bottom plate (19), the bottom of experiment table bottom plate (19) is laminated mutually has oily sleeper (15), the top of experiment table bottom plate (19) is provided with self-tapping screw (16), self-tapping screw (16) run through the top of experiment table bottom plate (19) and extend to the inside of oily sleeper (15), the bottom of experiment table bottom plate (19) is provided with first bolt (12), the bottom of experiment table bottom plate (19) is provided with second bolt (14), the bottom of experiment table bottom plate (19) is provided with third bolt (17), the top of experiment table bottom plate (19) is laminated mutually has and takes seat insert bearing (3), experiment table bottom plate (19) with take seat insert bearing (3) to pass through second bolt (14) are connected.

4. The vertical loading rolling bearing life test experiment table according to claim 3, wherein the speed regulating motor (1) is connected with the experiment table bottom plate (19) through the third bolt (17), and the bearing bracket lower half ring (13) is connected with the experiment table bottom plate (19) through the first bolt (12).

5. The vertical loading rolling bearing life test experiment table according to claim 3, wherein the outer side wall of the transmission shaft (4) is movably connected with the inner side wall of the outer spherical bearing with seat (3), the transmission shaft (4) can freely rotate on the inner side wall of the outer spherical bearing with seat (3), and the outer side wall of the end part of the transmission shaft (4) is attached to the other end of the inner side wall of the deep groove ball bearing (5).

6. The vertical loading rolling bearing life test experiment table according to claim 2, wherein the deep groove ball bearing (5) is arranged inside the upper half ring (9) and the lower half ring (13) of the bearing frame, the screw locking check ring (6) is arranged inside the upper half ring (9) and the lower half ring (13) of the bearing frame, the elastic check ring (7) for holes is arranged inside the upper half ring (9) and the lower half ring (13) of the bearing frame, the outer side wall of the small threaded shaft (8) is movably connected with the top of the upper half ring (9) of the bearing frame, and the small threaded shaft (8) is connected with the upper half ring (9) of the bearing frame through threads.