CN208543426U

CN208543426U - Bearing withdrawing device

Info

Publication number: CN208543426U
Application number: CN201821056584.4U
Authority: CN
Inventors: 张耀武
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-04
Filing date: 2018-07-04
Publication date: 2019-02-26
Anticipated expiration: 2028-07-04

Abstract

The utility model discloses a kind of bearing withdrawing device, the spinning in and out component of the bearing withdrawing device of the utility model is connected on bracket.The lead screw that lower end is taper is provided in the inner cavity of the screw shell of spinning in and out component, screw shell lower end is stretched out in lead screw lower end, the outer surface of screw shell is connect with the sleeve nut being fixedly mounted on bracket, feed screw nut is connected on screw rod, the lower end of screw shell is hinged at least two support arms.When taking out the bearing in gearbox, bracket is placed on the shell of gearbox, lead screw is inserted into the inner hole of bearing, rotating threaded shaft, lead screw move up, and the tapered end of lead screw will support outside support arm, support arm is resisted against in the inner hole of bearing, screw shell is rotated, spinning in and out component is moved up integrally, pulls out bearing together during moving up.Bearing can be smoothly taken out from gearbox, it is not necessary to which bearing can quickly be removed by punching on gear box casing, improve working efficiency, and gear box casing is avoided to be damaged.

Description

Bearing withdrawing device

Technical field

The utility model relates to repair appliance technology, specifically, being related to a kind of bearing withdrawing device.

Background technique

Gearbox is very important component on vehicle, it can change transmission ratio, expands driving wheel torque and revolving speed Effect.Gearbox is rotatably equipped with multiple transmission shafts by bearing, when the failure of gearbox bearing needs replacing, repairs people Member is usually first to dismantle axis, and then the position of corresponding shaft bearing outer ring is punched on gear box casing, mandril is inserted into, by artificial It taps mandril and makes bearing's looseness, to unload lower bearing.Existing bearing removal mode the problem is that, due to need in speed change It is punched on tank shell, destroys gear box casing to a certain extent, and this mode working efficiency for taking out bearing is lower, nothing Maintenance cost is increased in shape.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of bearing withdrawing devices, can be smoothly from gearbox Bearing is taken out, avoids gear box casing from being damaged, improves the working efficiency of maintenance personal.

In order to solve the above technical problems, the technical solution of the utility model is:

Bearing withdrawing device, the bearing withdrawing device include bracket and the spinning in and out component being connected on the bracket； The bracket includes the crossbeam and supporting leg to link together；The spinning in and out component includes: screw shell, the screw shell Inner wall and outer wall be all provided with screw thread, the lower end of the screw shell is hinged at least two support arms；The thread bush Lead screw is provided in the inner cavity of cylinder, the screw shell lower end is stretched out in the lead screw lower end, and the lead screw lower end is cone Shape end, the end radial dimension of the tapered end are greater than the outer diameter of the screw shell, and the screw rod upper end is connected with silk Thick stick nut, the feed screw nut are located at the top of the screw shell upper surface；The outer surface of the screw shell and sleeve spiral shell Mother's connection, the sleeve nut are fixedly installed on the crossbeam.

Further, hingedly there are three the support arm, three support arms are uniformly distributed for the lower end of the screw shell Outer rim in the lower end of the screw shell.

Further, the lower end of the support arm is curved end.

Further, the crossbeam and the supporting leg are welded to connect；Alternatively, the crossbeam is integrally formed with the supporting leg Structure, the both ends of the crossbeam bend downward to form the supporting leg.

Further, supporting leg is provided on the crossbeam apart from adjustment structure, the supporting leg includes setting apart from adjustment structure It is placed in the sliding slot of the crossbeam lower surface, the supporting leg is connected in the sliding slot, and is installed on the beam surface upper simultaneously And abut against the holding screw of the supporting leg upper end.

Further, the distance between described supporting leg is greater than the outer diameter of bearing.

Further, be provided between the crossbeam and the sleeve nut every cylinder, the sleeve nut, it is described every cylinder, The crossbeam fixed setting.

By adopting the above-described technical solution, the beneficial effects of the utility model are:

The bearing withdrawing device of the utility model includes bracket and the spinning in and out component being connected on bracket.Bracket includes The crossbeam and supporting leg to link together.Spinning in and out component includes that threaded screw shell, screw thread is all arranged in inner wall and outer wall The lower end of sleeve is hinged at least two support arms；Lead screw is provided in the inner cavity of screw shell, screw thread is stretched out in lead screw lower end Sleeve lower end, and lead screw lower end is tapered end, and the end radial dimension of tapered end is greater than the outer diameter of screw shell, silk Bar upper end is connected with the feed screw nut above screw shell upper surface；The outer surface of screw shell and it is fixedly mounted on crossbeam On sleeve nut connection.When taking out the bearing in gearbox, the supporting leg of bracket is placed on the shell of gearbox, lead screw It is inserted into the inner hole of bearing with screw shell, first rotating threaded shaft nut moves up lead screw, and the tapered end of lead screw is by support arm Support, support arm are resisted against in the inner hole of bearing outward；Turnbarrel nut again moves up spinning in and out component integrally, is moving up During bearing is pulled out together, unload lower bearing.It can be smoothly from gearbox using the bearing withdrawing device of the utility model Take out bearing, it is not necessary to which bearing can quickly be removed by punching on gear box casing, improve the working efficiency of maintenance personal, can be kept away Exempt from gear box casing to be damaged.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the bearing withdrawing device of the utility model；

Fig. 2 be in Fig. 1 A-A to amplification cross-sectional view；

In figure: 1- feed screw nut, 2- screw rod, 21- tapered end, 3- screw shell, 4- sleeve nut, for 5- every cylinder, 6- is horizontal Beam, 61- sliding slot, 7- supporting leg, 8- support arm, 81- curved end, 9- holding screw.

Specific embodiment

The present invention will be further described with reference to the accompanying drawings and examples:

In conjunction with Fig. 1 and Fig. 2 jointly shown in, a kind of bearing withdrawing device, it includes bracket and the rotation that is connected on bracket Into back-out component.

Bracket includes the crossbeam 6 and supporting leg 7 to link together.

Crossbeam 6 and supporting leg 7 are welded to connect；Alternatively, crossbeam 6 is an integral molding structure with supporting leg 7, the both ends of crossbeam 6 to Under be bent to form supporting leg 7.

For the ease of taking out the bearing of different size, it is provided with supporting leg on the cross beam 6 apart from adjustment structure, supporting leg distance is adjusted Section structure includes the sliding slot 61 that 6 lower surface of crossbeam is arranged in, and supporting leg 7 is connected in sliding slot 61, and is mounted on 6 upper surface of crossbeam And act against the holding screw 9 of 7 upper end of supporting leg.In order to ensure bearing withdrawing device can smoothly take out bearing, adjusting When the distance between supporting leg, it should be ensured that the distance between supporting leg 7 is greater than the outer diameter of bearing.

Spinning in and out component includes screw shell 3, and the inner wall and outer wall of screw shell 3 are all provided with screw thread, screw shell 3 Lower end be hinged at least two support arms 8, the lower end of screw shell 3 is preferably hinged there are three support arm 8, and three Support arm 8 is evenly arranged on the outer rim of the lower end of screw shell 3.The lower end of support arm 8 is curved end 81, enables to support Contact between arm 8 and bearing is more round and smooth.

Lead screw 2, the lower end of 2 lower end of lead screw stretching screw shell 3, and lead screw 2 are provided in the inner cavity of screw shell 3 Lower end is tapered end 21, and the end radial dimension of tapered end 21 is greater than the outer diameter of screw shell 3, the connection of 2 upper end of screw rod There is feed screw nut 1, feed screw nut 1 is located at the top of 3 upper surface of screw shell；The outer surface of screw shell 3 and sleeve nut 4 connect It connects, sleeve nut 4 is fixedly mounted on the cross beam 6.

It is provided between crossbeam 6 and sleeve nut 4 every cylinder 5, and sleeve nut 4, is fixedly installed every cylinder 5, crossbeam 6.It is logical It crosses and is arranged every cylinder 5, so that being separated with distance between sleeve nut 4 and crossbeam 6, sleeve nut 4 is carried out using tools such as spanners When operation, can there are enough operating spaces, not will receive the interference of 6 upper surface of crossbeam.

When taking out the bearing in gearbox using the bearing withdrawing device of the utility model, the supporting leg 7 of bracket is placed on change On the shell of fast case, lead screw 2 and screw shell 3 are inserted into the inner hole of bearing, and first rotating threaded shaft nut 1 moves up lead screw 2, By three support arms 8, support, three support arms 8 are resisted against in the inner hole of bearing the tapered end 21 of lead screw 2 outward simultaneously；It rotates again Sleeve nut 4, move up spinning in and out component integrally, pull out bearing together during spinning in and out component moves up, unload Lower bearing.Bearing can be smoothly taken out from gearbox using the bearing withdrawing device of the utility model, it is not necessary in gear box casing Upper punching can quickly remove bearing, improve the working efficiency of maintenance personal, can be avoided gear box casing and damaged.

In the description of this specification, it is to be understood that " upper surface ", " lower end ", "center", " inner cavity ", " cross The orientation or positional relationship of the descriptions such as beam ", " top ", " upper surface ", " lower surface ", " outer diameter ", " inner hole " are based on attached drawing Shown in orientation or positional relationship, it is only for convenient for description the utility model and simplify description, rather than indicate or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair The limitation of the utility model.

The above is only the citing of the utility model preferred forms, wherein the part that do not address in detail is ability The common knowledge of domain those of ordinary skill.The protection scope of the utility model is based on the contents of the claims, any based on this The technical inspiration of utility model and the equivalent transformation carried out, are also within the protection scope of the utility model.

Claims

1. bearing withdrawing device, which is characterized in that the bearing withdrawing device includes bracket and the precession that is connected on the bracket Screw out component；

The bracket includes the crossbeam and supporting leg to link together；

The spinning in and out component includes: screw shell, and the inner wall and outer wall of the screw shell are all provided with screw thread, the spiral shell The lower end of line sleeve is hinged at least two support arms；Lead screw is provided in the inner cavity of the screw shell, under the lead screw The screw shell lower end is stretched out at end, and the lead screw lower end is tapered end, the end radial ruler of the tapered end The very little outer diameter greater than the screw shell, the lead screw upper end are connected with feed screw nut, and the feed screw nut is located at the screw thread The top of sleeve upper surface；The outer surface of the screw shell is connect with sleeve nut, and the sleeve nut is fixedly installed in institute It states on crossbeam.

2. bearing withdrawing device as described in claim 1, which is characterized in that hingedly there are three institutes for the lower end of the screw shell Support arm is stated, three support arms are distributed in the outer rim of the lower end of the screw shell.

3. bearing withdrawing device as described in claim 1, which is characterized in that the lower end of the support arm is curved end.

4. bearing withdrawing device as described in claim 1, which is characterized in that the crossbeam and the supporting leg are welded to connect；Alternatively, The crossbeam is an integral molding structure with the supporting leg, and the both ends of the crossbeam bend downward to form the supporting leg.

5. bearing withdrawing device as described in claim 1, which is characterized in that be provided with supporting leg distance on the crossbeam and adjust knot Structure, the supporting leg include the sliding slot for being set to the crossbeam lower surface apart from adjustment structure, and the supporting leg is connected to the sliding slot In, and be installed on the beam surface upper and abut against the holding screw of the supporting leg upper end.

6. bearing withdrawing device as described in claim 1, which is characterized in that the distance between described supporting leg is greater than the outer of bearing Diameter.

7. bearing withdrawing device as described in claim 1, which is characterized in that be provided between the crossbeam and the sleeve nut Every cylinder, the sleeve nut described is fixedly installed every cylinder, the crossbeam.