CN207437606U

CN207437606U - A kind of bearing fixing part structure

Info

Publication number: CN207437606U
Application number: CN201721179600.4U
Authority: CN
Inventors: 丁克才
Original assignee: ZHEJIANG ROTONG ELECTRO-MECHANICS Co Ltd
Current assignee: ZHEJIANG ROTONG ELECTRO-MECHANICS Co Ltd
Priority date: 2017-09-14
Filing date: 2017-09-14
Publication date: 2018-06-01
Anticipated expiration: 2027-09-14

Abstract

It the utility model discloses a kind of simple in structure, easy to produce, and works in compared with thermal environment, still can keep bearing and a kind of good fixed bearing fixing part structure of plastic rubber bracket.It includes stent and bearing, and the stent is equipped with bearing block, and bearing is in bearing block, is set between bearing and bearing block there are one elastic covering, elastic covering is connected with bearing block, and elastic covering is located inside bearing block, and bearing is located inside elastic covering；Stent is plastic material, and through hole is equipped in bearing block, and raised ring is equipped on the inside of through hole, and elastic covering includes first annular part and the second annular element, and the second annular element is equipped with several circumferentially equally distributed elastic pieces of shape；In overall structure, elastic covering is simple in structure, beneficial to batch production, it is possible to prevente effectively from the security incident that stent thermal deformation is brought；Elastic covering is designed as elastic construction, has certain absorption to stent deformation；Elastic covering can compensate bearing block geometric tolerance, ensure that assembly precision.

Description

A kind of bearing fixing part structure

Technical field

The utility model is related to technical field of bearings more particularly to a kind of bearing fixing part structures.

Background technology

Often occur plastic rubber bracket in machinery and be directly interference fitted situation with rolling bearing, machinery would generally in long time running Under in an overheated state, hot lower plastic rubber component mechanical strength is substantially reduced, can not effective fixing bearing, so as to occur creep run Phenomenon is enclosed, causes bearing and plastic rubber bracket is worn and corrosion, corresponding mechanical integrity can be decreased also.

Utility model content

The purpose of this utility model is to overcome the deficiency in existing structure, provide it is a kind of simple in structure, easy to produce, It is operated in hot state environment, still can keep bearing and the well fixed bearing fixing part structure of plastic rubber bracket.

To achieve these goals, the utility model uses following technical scheme：

A kind of bearing fixing part structure, including plastic rubber bracket and bearing, the plastic rubber bracket is equipped with bearing block, elastic covering Inside bearing block, bearing is in inside elastic covering；The elastic covering includes first annular part, the second annular element and several bullets Property piece；The bearing block includes the first ring bodies and the second ring bodies, and the first ring bodies is equipped with aperture, and hole diameter is more than The internal diameter of bearing, the second ring bodies are equipped with macropore；The elastic covering is in inside macropore, and elastic covering is connected with macropore inner wall, Bearing is located inside elastic covering, and the outer ring of bearing is connected with elastic covering；The elastic covering and bearing block for being pressed into bearing block are interference fitted, The outer ring and elastic covering for being pressed into the rolling bearing of elastic covering are interference fitted, and bearing block fixes the outer of rolling bearing by elastic covering Circle, bearing block, elastic covering and coaxial bearing cooperation, under hot, plastic rubber bracket mechanical stability reduces, but metallic elastic cover is steady Determine that performance change is less, the vibration that bearing operation generates is disperseed to be transmitted to macropore inner wall by elastic covering, plastic rubber bracket is influenced compared with It is small, it is smaller so as to be influenced on the fixed stability of bearing.

Preferably, the first annular part is equipped with first annular part hole, first annular part is connected with the second annular element, Elastic piece is uniformly connected on the second annular element, and first annular part, first annular part hole and the second annular element are coaxially arranged；Elasticity Piece is circle-shaped to be uniformly connected on the second annular element, and elastic piece makes bearing be in close contact with elastic covering, elastic covering and macropore inner wall Be in close contact, when hot, elastic plate shape and it is existing rebound the thermal deformation of force compensating plastic rubber bracket and deform uneven, elastic piece Effective compensation can also be carried out to the geometric tolerance that bearing block is given birth to, increase structure concentricity and accuracy.

Preferably, the macropore madial wall is equipped with raised ring, raised ring diameter is more than bearing outside diameter；Protruding ring Part diameter is more than operation when bearing diameter assembles convenient for bearing and in the process should not damaged member.

Preferably, first ring bodies, first annular part and bearing are sequentially arranged on the axis direction of bearing, the One annular element is bonded with the first ring bodies, and the second annular element is bonded with macropore inner wall, and elastic piece is bonded with macropore inner wall, elastic piece It is contacted with raised ring；Elastic piece props up raised ring, there is reinforcing and positioning elastic cover, exists simultaneously multiple contacts Face further increases structural soundness.

Preferably, the aperture in the first annular part hole is more than bearing bore diameter, the second annular element axial length is more than axis Width is held, the second annular element axial length is less than big hole depth；The aperture in first annular part hole is more than bearing bore diameter, ensures bearing Assembling process is unaffected, and the second annular element axial length is more than bearing width, and the second annular element axial length is less than big hole depth Degree makes the outer ring of bearing that the holding power of elastic covering is subject to be uniformly distributed axially, and reduce bearing influences to make due to discontinuity Use the service life.

The beneficial effects of the utility model are：（1）Elastic covering is simple in structure, and production facility can effectively avoid plastic rubber bracket The machine security accident brought of thermal deformation；（2）Elastic covering is designed to elastic construction, has certain absorption to the deformation of plastic rubber bracket Effect ensures bearing steady running；（3）Elastic covering compensates the geometric tolerance of the bearing block on plastic rubber bracket, ensures dress With precision.

Description of the drawings

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the structure diagram of elastic covering in the utility model；

Fig. 3 is enlarged drawing at A in Fig. 1；

In figure：Plastic rubber bracket 1, bearing block 11, the first ring bodies 111, the second ring bodies 112, raised ring 113, aperture 114th, macropore 115, bearing 2, bearing outer ring 21, bearing inner race 22, elastic covering 3, first annular part 31, first annular part hole 311, Second annular element 32, elastic piece 33.

Specific embodiment

The utility model is further described in the following with reference to the drawings and specific embodiments.

As shown in Figure 1 to Figure 3, a kind of bearing fixing part structure including plastic rubber bracket 1 and bearing 2, is set on plastic rubber bracket 1 There is bearing block 11, elastic covering 3 is in inside bearing block 11, and bearing 2 is in inside elastic covering 3；Elastic covering 3 includes first annular part 31st, the second annular element 32 and several elastic pieces 33；Bearing block 11 includes the first ring bodies 111 and the second ring bodies 112, the first ring Shape body 111 is equipped with aperture 114, and 114 diameter of aperture is more than the internal diameter of bearing 2, and the second ring bodies 112 is equipped with macropore 115；Bullet Property cover 3 is in inside macropore 115, and elastic covering 3 is connected with 115 inner wall of macropore, and bearing 2 is located inside elastic covering 3, bearing outer ring 22 It is connected with elastic covering 3.

Elastic covering is pressed into bearing block, and elastic covering fits closely in itself in the presence of elasticity with macropore inner wall, reaches fixed purpose；Axis Pressure-bearing enters inside the elastic covering assembled, and outer ring and the elastic covering of bearing coordinate, and the outer ring of elastic covering and bearing is interference fitted, and is reached To fixed purpose；Bearing block fixes the outer ring of rolling bearing, bearing block, elastic covering and coaxial bearing cooperation, heat by elastic covering Under state, plastic rubber bracket mechanical stability declines, it is difficult to ensure the supporting function to bearing, but because the presence of metallic elastic cover, The variation of metal cap stability is smaller, and the active force that bearing operation vibration generates is disperseed to be transmitted to through-hole wall by elastic covering, leads to Hole inner wall local pressure significantly reduces, and plastic rubber bracket damage is substantially reduced, so as to reduce the shadow to the fixed stability of bearing It rings, avoids the occurrence of phenomena such as bearing runs circle.

First annular part 31 is equipped with first annular part hole 311, and first annular part 31 is connected with the second annular element 32, elasticity Piece 33 is uniformly connected on the second annular element 32, first annular part 31, first annular part hole 311 and 32 coaxial cloth of the second annular element It puts.

Circumferentially shape is uniformly connected on the second annular element elastic piece, and elastic piece normality is bent towards away from axis direction, elasticity Piece makes bearing be fitted closely with elastic covering, elastic covering and macropore inner wall fit closely, the shape that elastic piece can also give birth to bearing block Position tolerance carries out effective compensation, increases structure concentricity and accuracy, and under hot, elastic piece can also compensate plastic rubber bracket unevenness Even thermal deformation ensures that bearing is effectively fixed.

115 madial wall of macropore is equipped with raised ring 113, and raised 113 diameter of ring is more than 2 outer diameter of bearing.

Raised ring diameter is more than operation when bearing diameter assembles convenient for bearing, and structure should not be damaged in assembling process Part.

First ring bodies 111, first annular part 31 and bearing 2 are sequentially arranged on the axis direction of bearing 2, first annular Part 31 is bonded with the first ring bodies 111, and the second annular element 32 is bonded with 115 inner wall of macropore, and elastic piece 33 is pasted with 115 inner wall of macropore It closes, elastic piece 33 is contacted with raised ring 113.

Elastic piece props up raised ring, there is reinforcing and positioning elastic cover, increases structural soundness, prevents because long-term Operating cause elastic piece flexibility decrease after, elastic covering come off bearing block the phenomenon that occur.

The aperture 311 in first annular part hole is more than 2 internal diameter of bearing, and 32 axial length of the second annular element is more than the width of bearing 2 Degree, 32 axial length of the second annular element are less than 115 depth of macropore.

Second annular element axial length is more than bearing width, ensures that the outer ring of bearing is subject to the holding power of elastic covering in axial direction It is uniformly distributed, makes shaft strength uniform, increase bearing service life.

In the utility model, elastic covering is simple in structure, easy to produce, and elastic covering has certain absorption to the deformation of plastic rubber bracket Effect ensures bearing steady running, and elastic covering compensates the geometric tolerance of bearing block, ensures assembly precision, reduces plastic cement Stent manufacturing requirements, the on the whole presence of elastic covering can effectively avoid the machine security thing that the thermal deformation of plastic rubber bracket is brought Therefore.

Claims

1. a kind of bearing fixing part structure, including plastic rubber bracket and bearing, it is characterized in that, the plastic rubber bracket is equipped with bearing Seat, elastic covering are in inside bearing block, and bearing is in inside elastic covering；

The elastic covering includes first annular part, the second annular element and several elastic pieces；

The bearing block includes the first ring bodies and the second ring bodies, and the first ring bodies is equipped with aperture, and hole diameter is more than axis The internal diameter held, the second ring bodies are equipped with macropore；

The elastic covering is in inside macropore, and elastic covering is connected with macropore inner wall, and bearing is located inside elastic covering, bearing outer ring with Elastic covering connects.

2. a kind of bearing fixing part structure according to claim 1, it is characterized in that, the first annular part is equipped with first Annular element hole, first annular part are connected with the second annular element, and elastic piece is uniformly connected on the second annular element, first annular part, First annular part hole and the second annular element are coaxially arranged.

3. a kind of bearing fixing part structure according to claim 1, it is characterized in that, the macropore madial wall is equipped with protrusion Ring, raised ring diameter are more than bearing outside diameter.

4. a kind of bearing fixing part structure according to claim 3, it is characterized in that, it is first ring bodies, first annular Part and bearing are sequentially arranged on the axis direction of bearing, and first annular part is bonded with the first ring bodies, the second annular element with it is big Hole inner wall fitting, elastic piece are bonded with macropore inner wall, and elastic piece is contacted with raised ring.

5. a kind of bearing fixing part structure according to claim 1 or 2, it is characterized in that, the hole in the first annular part hole Footpath is more than bearing bore diameter, and the second annular element axial length is more than bearing width, and the second annular element axial length is less than big hole depth.