CN201960532U

CN201960532U - Bearing puller

Info

Publication number: CN201960532U
Application number: CN2011200825843U
Authority: CN
Inventors: 李刚; 余卫
Original assignee: Zhejiang Geely Holding Group Co Ltd; Shanghai LTI Automobile Components Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Shanghai LTI Automobile Components Co Ltd
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2011-09-07
Anticipated expiration: 2021-03-25

Abstract

The utility model discloses a bearing puller, which aims to provide a bearing puller which does not damage the bearing and can be adapted to the disassembly of large, medium and small bearings. , pull the nut, the pull plate includes the plate body and the connecting arm, the connecting end of the screw is hinged with the connecting arm of the pull plate through the hinge lock pin, the screw hole is set in the middle of the beam, the beam is fixed on the bracket through the beam lock pin, and the bracket is placed on the bearing On the seat, the screw rod passes through the screw rod hole, and the pulling nut is screwed on the other end of the screw rod. It is widely used in the disassembly of large, medium and small self-aligning ball bearings, self-aligning roller bearings, deep groove ball bearings, angular contact ball bearings and cylindrical roller bearings.

Description

A kind of bearing drawer

Technical field

The utility model relates to a kind of mechanical extracting tool, relates in particular to a kind of bearing drawer that is used for bearing removal.

Background technology

Usually, in machinery installation and maintenance process, the dismounting bearing has following two kinds of methods: a kind of method is by using hammer to knock chisel, act on bearing inner race or outer ring, bearing being disassembled from axle or bearing block.Its shortcoming is to knock chisel with hammer, moves inhomogeneously, and efficient is low, and after weak effect, bearing stood to knock, inner ring, outer ring and retainer all may produce distortion, even whole bearing is smashed; Another kind of mode is to use traditional bearing drawer dismounting bearing, such as from bearing block, dismantling bearing, put in the bearing inner race by tensioning shaft earlier, adjust the clamping and positioning of the diameter realization of tensioning shaft to bearing inner race, mounting bracket around the bearing block then, break away from bearing block by relative motion pulling bearing inner race, bearing is pulled out.The shortcoming of this method is, bearing inner race is subjected to special use and draws the tensile force of device to do the time spent can to produce distortion, and when bearing diameter was very little, the tensile force that needs was little, and big tensile force makes bearing inner race produce distortion to increase; When particularly very big or bearing and bearing block cooperated tension when bearing diameter to be removed, the tensile force that needs was very big, and the distortion of generation is also very big, and strain has been transformed into plastic deformation, even bearing inner race risen split, and caused bearing to scrap.Open day be that on 01 07th, 2004, publication number are that the patent documentation of CN2597158 discloses such technical scheme, it adopts the outer pulling claw of nut flexible arc and a screw mandrel that matches with the outer pulling claw of nut flexible arc of a disjunctor, the three-jaw that the bearing outer ring that also has a confession to break shelf is used or the arc overcoat pulling claw of four paws, when dismounting, use pulling claw outside the spanner hold-down nut flexible arc, the bottom that rotary screw withstands spindle socket makes the outer pulling claw of nut flexible arc produce displacement, and split bearing is unloaded.On the structure as can be seen, it is complicated that this scenario-frame seems, particularly the firm degree to the outer pulling claw opening angle control of flexible arc is not high, angle is opened big more insecurely more, therefore, can only be fit to the dismounting of small size bearing, cooperate tighter bearing removal with regard to not competent power with bearing block for medium-and-large-sized bearing, particularly bearing.

Summary of the invention

The utility model mainly is to solve the existing in prior technology bearing drawer to damage technical problems such as bearing and bearing drawer bad adaptability easily, and a kind of bearing drawer that does not damage bearing, can adapt to large, medium and small bearing removal is provided.

The utility model is mainly solved by following technical proposals at the prior art problem, and a kind of bearing drawer comprises support, crossbeam, beam lock pin, screw rod, the hinge lock pin, arm-tie, pulling nut, arm-tie comprises plate body, linking arm, and the link of screw rod is hinged by the linking arm of hinge lock pin and arm-tie, and the middle part of crossbeam is provided with screw hole, crossbeam is fixed on the support by the beam lock pin, support is placed on the bearing block, and screw rod passes screw hole, and the pulling nut revolves the other end of putting at screw rod.Described technical scheme is that arm-tie and screw rod are connected into a hinge arrangement by the hinge lock pin, this hinge is put into bearing inner race at a slant, the pulling screw rod, arm-tie is located at bearing inner race, placing rack also is connected with the beam lock pin with crossbeam on bearing block, screw rod is passed the screw hole of crossbeam, the pulling nut of screwing on then again, spur bearing inner race by the pulling nut on the rotating screw bolt, realize the dismounting bearing.

As preferably, the width of arm-tie is less than the interior diameter of bearing inner race, the length of arm-tie greater than the interior diameter of bearing inner race less than the overall diameter of bearing inner race, such length and width setting, can make arm-tie put into bearing inner race smoothly, can make again under the situation that the bearing big envelope is arranged, to guarantee to have enough pulling intensity.

As preferably, edge is provided with chamfering before and after the bottom surface of arm-tie plate body.For ease of arm-tie is put into bearing inner race, remove corner angle on the following ground of arm-tie rear and front end, promptly make the chamfering of corresponding radian.

As preferably, the shape of arm-tie rear and front end is arc, makes arm-tie and bearing inner race end face that bigger contact-making surface be arranged, and increases pulling intensity.

As preferably, the link edge of screw rod is provided with chamfering.The link of screw rod and the linking arm of arm-tie carry out hinged, with respect to screw rod bigger activity point of view are arranged for making hinged back arm-tie, in the end edge of screw rod link chamfering are set.

As preferably, also be provided with beam lock pin extending bore on the crossbeam, use the respective extension hole to connect support and crossbeam according to the size of bearing block.

As preferably, between pulling nut and crossbeam, also be provided with plain washer, increase contact area, the protection crossbeam of pulling nut and crossbeam.

The beneficial effect that the utility model brings is, overcome the drawback of prior art middle (center) bearing dismantling device, bearing inner race is not applied radially tensile force, do not damage bearing, simple, the easy row of occupation mode, result of use is good, and is easy to manufacture, can dismantle the bearing that very big or bearing of diameter and bearing block cooperate tension.

Description of drawings

Fig. 1 is a kind of structure chart of the present utility model;

Fig. 2 is a kind of vertical view of the present utility model;

Fig. 3 is a kind of front view of the utility model arm-tie;

Fig. 4 is a kind of vertical view of the utility model arm-tie;

Fig. 5 is a kind of structure chart of screw rod link of the present utility model;

Fig. 6 is a kind of structure chart of the utility model crossbeam.

Among the figure: the 1st, support, the 2nd, beam lock pin, the 3rd, crossbeam, 3a is a beam lock pin extending bore, and 3b is a screw hole, the 4th, and screw rod, 4a is a screw rod hinged lock pin-and-hole, and 4b is that the screw rod link falls, the 5th, and the pulling nut, the 6th, plain washer, the 7th, plate body, 7a are linking arms, 7b is the hinged lock pin-and-hole, and 7c is the arm-tie chamfering, and 7d is an arcuate end, the 8th, hinge lock pin, the 9th, bearing, the 10th, bearing block.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described in detail.

Embodiment: as Fig. 1, Fig. 3, shown in Figure 5, comprise support 1, crossbeam 3, beam lock pin 2, screw rod 4, hinge lock pin 8, arm-tie, pulling nut 5, arm-tie comprises plate body 7, linking arm 7a, the link of screw rod 4 is hinged with the linking arm 7a of arm-tie by hinge lock pin 8, the middle part of crossbeam 3 is provided with screw hole 3b, and screw rod 4 passes screw hole 3b, and pulling nut 5 revolves the upper end of putting at screw rod 4, crossbeam 3 is fixed on the support 1 by beam lock pin 2, and support 1 is placed on the bearing block 10.

In Fig. 3, the width of plate body 7 is less than the interior diameter of bearing inner race, the length of arm-tie greater than the interior diameter of bearing inner race less than the overall diameter of bearing inner race, chamfering 7c is set on the bottom surface of plate body 7, linking arm 7a is welded on the plate body 7, and hinged lock pin-and-hole 7b, screw rod hinged lock pin-and-hole 4a (Fig. 5) are suitable with hinge lock pin 8.

As shown in Figure 2, two supports 1 symmetry on bearing block 10 is placed.

As shown in Figure 4, the two ends of plate body 7 are set to arc 7d.

Shown in Figure 6 is the view of crossbeam 3, and being provided with at two ends is beam lock pin extending bore 3a.According to the size of various bearings, design has the arm-tie of suitable various sizes, regulates the position of extending bore 3a during assembling, realizes self-aligning ball bearing, self-aligning roller bearing, deep groove ball bearing, the angular contact ball bearing to various sizes, the dismounting of cylinder roller bearing.

During the dismounting bearing, screw rod 4 is passed screw hole 3b on the crossbeam, load onto plain washer 6, the pulling nut 5 of screwing on connects into a hinge arrangement with arm-tie and screw rod 4 by alignment pin 8, arm-tie is put into bearing inner race at a slant, fixed support 1 and crossbeam 3 on bearing block 10, pulling screw rod 4 makes plate body 7 locate at bearing inner race, pulling nut 5 on the rotating screw bolt 4 spurs the bearing side afterwards, realizes the dismounting bearing.

Features such as do not damage bearing so the utlity model has, occupation mode is simple, easy row, and result of use is good, and is easy to manufacture, can dismantle the bearing that very big or bearing of diameter and bearing block cooperate tension, and cost is low.

Claims

1. a bearing drawer is characterized in that: comprise support, crossbeam, the beam lock pin, screw rod, hinge lock pin, arm-tie, the pulling nut, described arm-tie comprises plate body, linking arm, the link of described screw rod is hinged by the linking arm of hinge lock pin and arm-tie, the middle part of described crossbeam is provided with screw hole, and crossbeam is fixed on the support by the beam lock pin, and described screw rod passes described screw hole, the pulling nut revolves the other end of putting at screw rod, and support is placed on the bearing block.

2. according to the described a kind of bearing drawer of claim 1, it is characterized in that: the width of described arm-tie is less than the interior diameter of bearing inner race, the length of arm-tie greater than the interior diameter of bearing inner race less than the overall diameter of bearing inner race.

3. according to claim 1 or 2 described a kind of bearing drawers, it is characterized in that: edge is provided with chamfering before and after the bottom surface of described arm-tie plate body.

4. according to the described a kind of bearing drawer of claim 2, it is characterized in that: the shape of described arm-tie rear and front end is arc.

5. according to the described a kind of bearing drawer of claim 1, it is characterized in that: the link edge of described screw rod is provided with chamfering.

6. according to the described a kind of bearing drawer of claim 1, it is characterized in that: also be provided with beam lock pin extending bore on the described crossbeam.

7. according to the described a kind of bearing drawer of claim 1, it is characterized in that: between pulling nut and crossbeam, also be provided with plain washer.