CN206632623U

CN206632623U - A kind of extracting tool of rolling bearing units

Info

Publication number: CN206632623U
Application number: CN201720376604.5U
Authority: CN
Inventors: 刘洪坤; 马桂芳; 刘玉民
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-11
Filing date: 2017-04-11
Publication date: 2017-11-14
Anticipated expiration: 2027-04-11

Abstract

It the utility model is related to a kind of extracting tool of rolling bearing units, including axle sleeve and draw-off gear, during dismounting, the axle sleeve is fixed on the bearing inner race of bearing, draw-off gear extracts bearing, the axle sleeve includes base and sleeve, the sleeve is fixed on base, with the stepped structure of base, the sleeve and base are concentric, sleeve has through hole vertically with base, the diameter of the through hole is equal with the external diameter of bearing inner race, two positioning holes that its circumference surface is provided with, two top wire holes of the positioning hole and bearing inner race are concentric, the draw-off gear is using drawing horse, rolling bearing units extracting tool of the present utility model, it is simple in construction, it is easy to operate, it is laborsaving, and other structures are not had an impact when dismantling, it can be widely applied to the dismounting of different occasion rolling bearing units.

Description

A kind of extracting tool of rolling bearing units

Technical field

It the utility model is related to bearing removal technical field, and in particular to a kind of extracting tool of rolling bearing units.

Background technology

Rolling bearing units are widely used in all types of because its is easy for installation, simplify device structure design, saves the features such as space Equipment, rolling bearing units are typically fixed by 2-4 parts bolt with equipment rack, and brearing bore typically uses the less transition of the magnitude of interference Coordinate, such as H7/k6, H7/n6 etc..But because the axial workpiece of equipment typically uses carbon steel processing and fabricating, processed by the shaft shoulder thick The influence of rugosity and operating condition condition (air humidity, dust), axle, often because corrosion bonds, add dismounting with brearing bore Difficulty.

When rolling bearing units are installed, bearing is coordinated with axle using special installation tool and is installed in place.But when dismantling first Without special extracting tool, conventional drawing horse can not use because bearing mounting surface is brought into close contact with equipment rack.Machine repair personnel Flat mouth wedge is typically pounded into mounting surface into bearing and frame with tup in decades, struts gap, then will with another wedge The another side of bearing struts gap, when gap is sufficiently large, draws horse to pull down bearing using two pawls, existing to do bearing removal side Following defect be present in formula：

1st, using frame plate is relied on, the taper work face of wedge is utilized with tup, wedge, in the very big situation of frictional force It is lower to separate bearing with frame plate, necessarily equipment rack material and paint face local damage, equipment afterwards were run Corrosion is produced in journey.

2nd, during wedge separates wallboard and bearing, active force that wallboard separates with bearing vertically transmits power To the normal bearing of the other end, the bearing roller that need not be changed and retainer for making the other end bear very big axial force, Irreversible damage is caused, shortens its normal service life.

3rd, in the case where rolling bearing units installing space is special, the dismounting mode of tup+wedge+drawing horse can not also use, Old bearing can only can be just removed with angle grinder by bearing case and bearing internal external circle cutting damage.This mode is in cutting bearing During inner ring, there can be different degrees of damage to the diameter of axle, drawback is obvious.

Utility model content

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of extracting tool of rolling bearing units, knot Structure is simple, and it is convenient, laborsaving to make bearing using the tool ejector, and other structures will not be had undesirable effect.

The utility model adopts the following technical scheme that：

A kind of extracting tool of rolling bearing units, including axle sleeve and draw-off gear, during dismounting, the axle sleeve is fixed on bearing On bearing inner race, draw-off gear extracts bearing.

Further, the axle sleeve includes base and sleeve, and the sleeve is fixed on base, with the stepped knot of base Structure, the sleeve and base are concentric, and sleeve has through hole vertically with base.

Further, the diameter of the through hole and the external diameter of bearing inner race are equal.

Further, two holes that its circumference surface is provided with, it is positioning hole.

Further, two top wire holes of the positioning hole and bearing inner race are concentric.

Further, the base end profile is circular or polygon.

Further, the draw-off gear draws horse or Three-claw pull-horse using two pawls.

The beneficial effects of the utility model：

A kind of extracting tool of rolling bearing units of the present utility model, it is simple in construction, it is easy to operate, and bearing removal During other structures will not be had undesirable effect, can be widely applied to the dismantlement work of various occasion rolling bearing units.

Brief description of the drawings

The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its illustrate be used for explain the application, do not form the restriction to the application.

Fig. 1 (a), Fig. 1 (b), Fig. 1 (c) are different types rolling bearing units structural representations；

Fig. 2 is a bearing and axle assembling schematic diagram；

Fig. 3 is the utility model axle sleeve structure schematic diagram；

Fig. 4 (a), Fig. 4 (b) are the utility model extracting tool schematic diagrames；

Wherein, 1. base, 2. sleeves, 3. through holes, 4. positioning holes, 5. draw-off gears, 6. bearing inner races, 7. top wire holes, 8. Bearing outer ring, 9. retainers, 10. rolling elements, 11. bearing blocks.

Embodiment

Utility model is described further below in conjunction with the accompanying drawings：

Different types rolling bearing units schematic diagram as shown in Fig. 1 (a)-(c), is all made up of bearing block 11, bearing, and bearing Then it is made up of bearing inner race 6, bearing outer ring 8, rolling element 10, retainer 9, mapping bearing finds that seat bearing is in manufacturing process Interchangeability it is very strong, such as with plummer block housing, the same specification of the bearing with diamond-type base and with square base be used interchangeably, itself and axle fill Figure is as shown in Fig. 2 so dismounting for seat bearing, as long as extracting tool establishes suitable impetus, it is possible to conveniently tear open Unload, based on this thinking, the utility model provides a kind of rolling bearing units extracting tool, as shown in Fig. 3,4 (a), 4 (b), a kind of band The extracting tool of seat bearing, including axle sleeve and draw-off gear 5, during dismounting, the axle sleeve is fixed on the bearing inner race of bearing, is drawn Pulling device extracts bearing.

Further, the axle sleeve includes base 1 and sleeve 2, and the sleeve is fixed on base, stepped with base Structure, the sleeve and base are concentric, and sleeve has through hole 3 vertically with base.

Further, two holes that its circumference surface is provided with, it is positioning hole 4.

Further, two top wire holes 7 of the positioning hole and bearing inner race are concentric.

Further, the base end profile is circular or polygon.

Further, the draw-off gear 5 draws horse or Three-claw pull-horse using two pawls.

The axle sleeve can design different dimensions to meet the needs of different size seat bearing removal.

Its embodiment is：

When rolling bearing units need dismounting, two jackscrews of bearing inner race are unloaded, the sleeve of axle sleeve is enclosed on bearing inner race On, rotary sleeve, the positioning hole on sleeve is alignd with two top wire holes of bearing inner race, jackscrew is then loaded into two positioning In hole and top wire hole, the screw-in depth of jackscrew reaches the 1/2 of jackscrew length, now axle sleeve by positioning hole, top wire hole and Jackscrew realizes the excircle positioning along bearing inner race, and the drawing horse screw mandrel for drawing horse is withstood on the end face of axle, hooks pawl and is stuck in axle sleeve On the end face of the sleeve side of base, horse screw mandrel is drawn in rotation, you can is separated seat bearing with axle.

It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model Within enclosing.

Claims

1. a kind of extracting tool of rolling bearing units, it is characterised in that including axle sleeve and draw-off gear, during dismounting, the axle sleeve is consolidated It is scheduled on the bearing inner race of bearing, draw-off gear extracts bearing；

The axle sleeve includes base and sleeve, and the sleeve is fixed on base, and the stepped structure of base, the sleeve with Base is concentric, and sleeve has through hole vertically with base；

The diameter of the through hole is equal with the external diameter of bearing inner race；

Two holes that its circumference surface is provided with, it is positioning hole；

Two top wire holes of the positioning hole and bearing inner race are concentric.

2. a kind of extracting tool of rolling bearing units as claimed in claim 1, it is characterised in that the base end profile is circle Shape or polygon.

3. a kind of extracting tool of rolling bearing units as claimed in claim 1, it is characterised in that the draw-off gear uses two pawls Draw horse or Three-claw pull-horse.