CN204226429U

CN204226429U - Bearing type on shearer walk gear

Info

Publication number: CN204226429U
Application number: CN201420691219.6U
Authority: CN
Inventors: 张建立
Original assignee: HEBEI FUTELAI BEARING TECHNOLOGY Co Ltd
Current assignee: HEBEI FUTELAI BEARING TECHNOLOGY Co Ltd
Priority date: 2014-11-18
Filing date: 2014-11-18
Publication date: 2015-03-25
Anticipated expiration: 2024-11-18

Abstract

The utility model relates to a kind of bearing type on shearer walk gear, comprise inner ring and outer ring, some rolling elements are had in the space that inner ring and outer ring surround, the inner shafts of outer ring is to fluted, the axial length of described groove and the axial length of rolling element adapt, the radial direction one of rolling element is placed in described groove, and opposite side contacts with inner ring inner side surface, and rolling element is radial contact arrangement in the space that inner ring and outer ring surround.The utility model bearing, without retainer, completely fills rolling element, is guided voluntarily during work by rolling element.Relative to the bearing of same size, rolling element quantity is more, and the rolling element quantity that carrying effect is played in loading zone is many, and bearing capacity is high, ensure that the startability of walking wheel of coal cutter simultaneously.The surface of contact of bearing (ball) cover and inner ring has Sealing, and this sealing configuration is more simple, and dismounting is also more convenient, shortens the duration of installation and maintenance.

Description

Bearing type on shearer walk gear

Technical field

The utility model relates to bearing, particularly bearing type on shearer walk gear.

Background technique

Chainless hauled shearer, at present most walking manner adopting the engagement of cycloid wheel pin rail, its road wheel is many wheel constructions, and core need install bearing additional.It is contour that traditional bearing is generally Internal and external cycle, and mostly need be furnished with special bearing at bearing face with the use of this bearing of retainer and fix and seal arrangement, its structure relative complex, and sealing effect is undesirable, and because of by spatial constraints, load-carrying ability is limited.Due to the carrying capacity that day by day increases with to bearing requirements at the higher level in working life, original bearing structure can not meet the demand of production status, and lifting capacity and the working life of how to improve bearing become urgent problem.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of bearing type on shearer walk gear of high loadability.

For solving above technical problem, the utility model improves on the basis of existing bearing structure.The utility model bearing type on shearer walk gear, comprise inner ring and outer ring, some rolling elements are had in the space that inner ring and outer ring surround, the inner shafts of outer ring is to fluted, the axial length of described groove and the axial length of rolling element adapt, the radial direction one of rolling element is placed in described groove, and opposite side contacts with inner ring inner side surface, and rolling element is radial contact arrangement in the space that inner ring and outer ring surround.The utility model bearing, without retainer, completely fills rolling element, is guided voluntarily during work by rolling element.Relative to the bearing of same size, rolling element quantity is more, and the rolling element quantity that carrying effect is played in loading zone is many, and bearing capacity is high, ensure that the startability of walking wheel of coal cutter simultaneously.

As preferred scheme, axially, inner ring both sides height is greater than both sides, outer ring height, and the axial both sides of inner ring and outer ring are provided with bearing (ball) cover, bearing (ball) cover inner radial surface and inner ring exterior surface, and the axial inner side surface of bearing (ball) cover is the axial contact outside with inner ring at least.Bearing (ball) cover and shearer's shell are fixed, and are convenient to bearing dismantling.The inner ring height increased also can improve bearing capacity further.

As preferred scheme, be convenient to dismounting and make bearing integral structure reliability and durability to make bearing, bearing (ball) cover axially inner side forms groove, and both sides, outer ring embed in the groove of two bearing (ball) covers in both sides respectively.

As the preferred scheme of another kind, the surface of contact of bearing (ball) cover and inner ring has Sealing, this sealing configuration is more simple, and dismounting is also more convenient.

The utility model is not high for walking wheel of coal cutter rotating speed, the improvement that the feature that load is larger is done.Breach conventional bearings design concept, increase its bearing capacity by cancelling retainer and increasing inner ring height, and the object that realization increases the service life.By improving sealing means, simplifying sealing configuration, making bearing be convenient to dismounting, shortening the duration of installation and maintenance.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model bearing type on shearer walk gear.

In figure, 1-inner ring, 2-outer ring, 3-rolling element, 4-bearing (ball) cover, 5-Sealing.

Embodiment

In order to make those skilled in the art better understand the utility model, below in conjunction with accompanying drawing, explanation clear, complete is further done to the utility model.

Bearing type on shearer walk gear shown in Fig. 1, comprises inner ring 1 and outer ring 2, and have some rolling elements 3 in the space that inner ring 1 and outer ring 2 surround, rolling element is cylindrical roller.The inner shafts of outer ring 2 is to fluted, the axial length of described groove and the axial length of rolling element 3 adapt, the radial direction one of rolling element 3 is placed in described groove, and opposite side contacts with inner ring 1 inner side surface, and rolling element 3 is radial contact arrangement in the space that inner ring 1 and outer ring 2 surround.Bearing is embedded in the inner chamber of walking wheel of coal cutter.

Axially, inner ring 1 both sides height is greater than both sides, outer ring 2 height, and the axial both sides of inner ring 1 and outer ring 2 are provided with bearing (ball) cover 4, bearing (ball) cover 4 inner radial surface and inner ring 1 exterior surface, at least axial with inner ring 1 contact outside of the axial inner side surface of bearing (ball) cover 4.More preferably structure is that bearing (ball) cover 4 axially forms groove in inner side, and both sides, outer ring 2 embed in the groove of two bearing (ball) covers 4 in both sides respectively.Bearing (ball) cover 4 and shearer's shell are fixed.

Bearing (ball) cover 4 and the surface of contact of inner ring 1 there is Sealing 5, namely on inner ring 1 protuberance that both sides extend vertically, has Sealing, be sealed and matched with bearing (ball) cover 4 inner radial surface.Inner ring 1 inner band oil groove oilhole, with the sealing of bearing (ball) cover 4, inner ring 1 ensure that in bearing bore, lubricant oil normally uses.Inner ring 1 and the surface of contact of live axle there is Sealing 5, bearing and road wheel are sealed and matched.

The claimed scope of the utility model is not limited to above embodiment; to those skilled in the art; the utility model can have various deformation and change, all in design of the present utility model and any amendment, the improvement done within principle be equal to replacement and all should be included within protection domain of the present utility model.

Claims

1. a bearing type on shearer walk gear, comprise inner ring (1) and outer ring (2), some rolling elements (3) are had in the space that inner ring (1) and outer ring (2) surround, it is characterized in that: the inner shafts of outer ring (2) is to fluted, the axial length of the axial length of described groove and rolling element (3) adapts, the radial direction one of rolling element (3) is placed in described groove, opposite side contacts with inner ring (1) inner side surface, and rolling element (3) is radial contact arrangement in the space that inner ring (1) and outer ring (2) surround.

2. bearing type on shearer walk gear according to claim 1, it is characterized in that: axially, inner ring (1) both sides height is greater than outer ring (2) both sides height, inner ring (1) and outer ring (2) axial both sides are provided with bearing (ball) cover (4), bearing (ball) cover (4) inner radial surface and inner ring (1) exterior surface, bearing (ball) cover (4) axial inner side surface at least with inner ring (1) axial contact outside.

3. bearing type on shearer walk gear according to claim 2, is characterized in that: bearing (ball) cover (4) axially inner side forms groove, and outer ring (2) both sides embed in the groove of two bearing (ball) covers (4) in both sides respectively.

4. bearing type on shearer walk gear according to claim 2, is characterized in that: bearing (ball) cover (4) and the surface of contact of inner ring (1) have Sealing (5).