CN105841962A

CN105841962A - Novel joint bearing wearing service lifetime testing clamp

Info

Publication number: CN105841962A
Application number: CN201610186159.6A
Authority: CN
Inventors: 胡占齐; 马华静; 刘长鑫; 孙伟涛; 张相进
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2016-03-29
Filing date: 2016-03-29
Publication date: 2016-08-10

Abstract

The invention discloses a novel joint bearing wearing service lifetime testing clamp, and relates to the testing technology field. The novel joint bearing wearing service lifetime testing clamp comprises a mandrel without a keyway, a jig body I, a jig body II, a left supporting bearing, a right supporting bearing, a left lining, a right lining, a left bearing pressing cover, a right bearing pressing cover, a baffle plate, and a nut. The novel joint bearing wearing service lifetime testing clamp is advantageous in that the spindle head and the spindle body of the mandrel are not provided with the keyways, and therefore the intensity and the rigidness can be improved, and the load and the torque can be reduced; the left supporting bearing seat and the right supporting bearing seat are integrated together, and then the assembly and the disassembly are more convenient, the assembly disassembly intensity can be reduced, and the assembly disassembly efficiency can be improved; the inner ring and the outer ring of the left supporting bearing seat and the right supporting bearing seat are provided with axial fixing links, and then the slipping phenomenon of the bearing can be prevented during the high-speed rotation and swinging, and therefore the test fault occurrence probability can be reduced, the stability of the testing jigs and the safety performance of the test can be improved.

Description

A kind of knuckle bearing wear life test fixture

Technical field

The present invention relates to experimental technique field, be specifically related to a kind of knuckle roll bearing swing wear-out life examination Test fixture.

Background technology

Oscillating bearing, also known as spherical bearing, has the features such as bearing capacity is big, impact resistance is strong, extensively General it is applied to the aspects such as Aero-Space, engineering machinery, truck, water conservancy projects.The master of oscillating bearing Wanting failure mode is abrasion so that the inside and outside ring gap of bearing increases, and causes the vibration at bearings position, The inefficacy of associated components is can also result in during serious wear.Therefore, oscillating bearing is carried out swinging friction mill Damage life test has great importance.

The Chinese patent of Patent No. 201420300293.0 discloses a kind of oscillating bearing swinging wear-out life Test fixture, it includes a mandrel without keyway, left top cover, right top cover, left support bearing, the right side Support bearing, left support abutment and right support abutment and load plate, mandrel sequentially passes through right top cover, is arranged in load plate Oscillating bearing and left top cover；Mandrel has the shaft shoulder, and the shaft shoulder withstands on the flanged end face of right top cover, mandrel Spindle nose there is external screw thread, the nut on mandrel spindle nose, spring washer, plain washer make left top cover and joint Another inner ring end contact of bearing, makes left top cover and right top cover be clamped by the inner ring of oscillating bearing.Should Chucking appliance system have simple in construction, be easy to processing, experimentation cost is low, avoid the advantage such as impact of key, but But there is installing/dismounting inconvenient, and be easy to when high speed rotating swings spring bearing slip phenomenon, There is certain danger.

Summary of the invention

The problem existed for prior art, it is desirable to provide a kind of knuckle roll bearing swing abrasion Life test fixture, two supporting bearing base are carried out integrated design, and are two by this test fixture The Internal and external cycle of support bearing is respectively provided with and axially positions link, so that its installing/dismounting is more convenient, and at height Will not cause danger in the case of speed rotary oscillation, performance safety is reliable.

The object of the invention is realized by following technical proposals: a kind of knuckle bearing wear life test Fixture, including mandrel, left support bearing, right support bearing, left lining, right lining, nut, baffle plate, Also including clamp body I, clamp body II, left bearing gland, right bearing gland, described mandrel is without keyway Mandrel, it sequentially passes through left lining, the oscillating bearing being arranged in clamp body I, right lining, the described right side Lining one end withstands on an inner ring end face of oscillating bearing, and the other end contacts with baffle plate, described left bearing The outer ring of oscillating bearing is axially fixed in clamp body I together with right bearing gland by gland, described mandrel Left end is connected with drive system, and mandrel is provided with the shaft shoulder, and the shaft shoulder withstands on the end face of left lining, mandrel Spindle nose is provided with external screw thread, and nut on mandrel spindle nose and baffle plate make an inner ring of right lining and oscillating bearing End contact, makes left lining and right lining be clamped by the inner ring of oscillating bearing, described left support bearing and the right side Spring bearing is separately mounted in the bearing block in clamp body II, and described left lining is arranged on left support bearing In, described right lining is arranged in right support bearing.

Further, the bearing block in described clamp body II is provided with annular groove, described left support bearing and the right side The outer ring of spring bearing is separately fixed in the bearing block annular groove in clamp body II, described left lining and right lining The inner ring end face being provided with shoulder, described left support bearing and right support bearing outside set withstands on a left side respectively On the shoulder of lining and right lining.

The present invention has the advantage that and provides the benefit that: the present invention not only has the spindle nose because of mandrel and axle body All do not have keyway and improve strength and stiffness, reduce the excellent specific properties such as born load and moment of torsion, But also because by left and right supporting bearing base integrated design, installing/dismounting is more convenient, decreases installation Dismounting intensity, improves installing/dismounting efficiency.In addition, left support bearing and right support bearing interior, All there is axial restraint link outer ring, has the most both made also to occur bearing to slip when high speed rotating swings existing As, reduce testing failure probability of happening, improve the stability of test fixture and the safety of test.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the A-A sectional view of Fig. 2.

Detailed description of the invention

Hereinafter, with reference to the accompanying drawings of embodiments of the invention.

The knuckle roll bearing swing wear-out life test fixture of the embodiment of the present invention, sees Fig. 1-3, including Piece mandrel 3 without keyway, clamp body I 1, clamp body II 4, left support bearing 2, right support bearing 7, Left lining 8, right lining 12, left bearing gland 9, right bearing gland 11, baffle plate 6 and nut 5.Mandrel The oscillating bearing 10 3 sequentially pass through left lining 8, being arranged in clamp body I 1 and right lining 12, right lining Overlapping 12 one end to withstand on an inner ring end face of oscillating bearing 10, the other end contacts with baffle plate 6, left axle The outer ring of oscillating bearing 10 is axially fixed in clamp body I 1 together with right bearing gland 11 by pressure cap 9； Mandrel 3 left end is connected with drive system, and has the shaft shoulder, and the shaft shoulder withstands on the end face of left lining 8, The spindle nose of mandrel 3 has external screw thread, and nut 5 and baffle plate 6 on mandrel 3 spindle nose make right lining 12 and close One inner ring end contact of bearings 10, makes left lining 8 and right lining 12 by oscillating bearing 10 Circle clamping；Left support bearing 2 and right support bearing 7 are separately mounted in the bearing block in clamp body II 4, And an inner ring end face of left support bearing 2 and right support bearing 7 withstands on left lining 8 and right lining respectively On set 12, left lining 8 is arranged in left support bearing 2, and right lining 12 is arranged on right support bearing 7 In.

The using method of this fixture is: oscillating bearing 10 is loaded clamp body I 1, by left bearing gland 9 It is arranged in the left side circular groove of clamp body I 1, right bearing gland 11 is arranged on clamp body I 1 In the circular groove of the right, left support bearing 2 and right support bearing 7 are respectively charged into the bearing of clamp body II 4 In seat, left lining 8 is loaded in left support bearing 2, right lining 21 is loaded in right support bearing 7, Mandrel 3 is sequentially passed through left lining 8, oscillating bearing 9 and right lining 12, baffle plate 6, nut 5 are installed to On the spindle nose of mandrel 3, left lining 8 and right lining 12 is made to clamp the inner ring of oscillating bearing 9.Oscillating bearing When carrying out swinging wear-out life test, loading system passes through clamp body I 1 and II 4 pairs of oscillating bearings of clamp body 10 apply radial load, and drive system drives mandrel 3 and nut thereon 5, and left lining 8 utilizes and core Frictional force between the shaft shoulder of axle 3 carries out periodic oscillations, and right lining 12 utilizes the friction between baffle plate 6 Power carries out periodic oscillations, and left lining 8 and right lining 12 utilize the friction between oscillating bearing 10 inner ring Power drives oscillating bearing 10 to realize its periodic oscillations.

Claims

1. a knuckle bearing wear life test fixture, including mandrel, left support bearing, right support Bearing, left lining, right lining, nut, baffle plate, it is characterised in that also include clamp body I, clamp body II, left bearing gland, right bearing gland, described mandrel is without keyway mandrel, its sequentially pass through left lining, Being arranged on the oscillating bearing in clamp body I, right lining, described right lining one end withstands on of oscillating bearing On inner ring end face, the other end contacts with baffle plate, described left bearing gland together with right bearing gland by joint shaft The outer ring held is axially fixed in clamp body I, and described mandrel left end is connected with drive system, and mandrel is provided with The shaft shoulder, the shaft shoulder withstands on the end face of left lining, and the spindle nose of mandrel is provided with external screw thread, the nut on mandrel spindle nose An inner ring end contact with baffle plate makes right lining and oscillating bearing, makes left lining and right lining by joint shaft The inner ring clamping held, described left support bearing and right support bearing are separately mounted to the bearing block in clamp body II In, described left lining is arranged in left support bearing, and described right lining is arranged in right support bearing.

A kind of knuckle bearing wear life test fixture the most according to claim 1, its feature exists In, the bearing block in described clamp body II is provided with annular groove, outside described left support bearing and right support bearing In the bearing block annular groove that circle is separately fixed in clamp body II, outside described left lining and right lining, it is provided with shoulder, One inner ring end face of described left support bearing and right support bearing withstands on left lining and the shoulder of right lining respectively On.