CN202702151U

CN202702151U - Lifting jack type bearing puller

Info

Publication number: CN202702151U
Application number: CN 201220316380
Authority: CN
Inventors: 宋虎
Original assignee: ZHANGJIAGANG TIANDA SPECIAL KNIFE CO Ltd
Current assignee: Zhangjiagang Tianda Tool Co., Ltd.
Priority date: 2012-07-03
Filing date: 2012-07-03
Publication date: 2013-01-30
Anticipated expiration: 2022-07-03

Abstract

The utility model discloses and provides a lifting jack type bearing puller which enables clamping parts of hook claws and an outer circle of a bearing to form surface contact and enables the stress direction of the bearing to consist with the transversal surface of the bearing. The lifting jack type bearing puller comprises a lifting jack, a pushing beam and a pair of hook claws, wherein a pushing seat is arranged in the center of the pushing beam, the lifting jack is arranged in the pushing seat in a penetrating mode, and a pushing head is arranged on the end part of a pushing bar of the lifting jack. A locating hole matched with the pushing beam is arranged in the upper part of each hook claw, and the lower part of each hook claw is a clamping part matched with the outer circle of the bearing, wherein a pair of locking through holes parallel to each other are arranged in one hook claw near the clamping part, a pair of locking threaded holes parallel to each other are arranged in the other hook claw near the clamping part, a pair of locking bolts respectively penetrate through the two locking through holes of the hook claw at one corresponding side and are arranged in the corresponding locking threaded holes of the hook claw at the other side in a penetrating mode, and the pushing head penetrates between the pair of locking bolts. The lifting jack type bearing puller is especially suitable for dismounting bearings.

Description

The jack type bearing puller

Technical field

The utility model relates to a kind of bearing puller that is specifically designed to the dismounting bearing, refers more particularly to a kind of jack type bearing puller.

Background technology

Draw horse to be also referred to as thruster, be widely used in dismantling the axles such as various shaft couplings, gear, bearing, belt pulley and tighten part.By its pushing tow mode, usually be divided into screw and draw horse and jack type to draw horse.Present jack type draws horse, and its structure comprises: jack, thrust beam and at least one pair of hook, and the central authorities of thrust beam are provided with push block, and described jack is located in the push block, and the end of the propulsion arm of jack is provided with the pushing tow head.When using this general jack type to draw Malaysia dismounting bearing, if the position of hook and thrust beam is improper, the clamping part of hook will with the outer ring of bearing between form line and contact, the cross section shape that is subjected to force direction and bearing of bearing in an angle, thereby the axle in the bearing is being carried out in the process of pushing tow, cause bearing deformation, affect the normal use of bearing.

The utility model content

Technical problem to be solved in the utility model is: provide a kind of can be so that the outer ring formation face contact of the clamping part of hook and bearing and the consistent jack type bearing puller of the cross section that is subjected to force direction and bearing of bearing.

For solving above-mentioned technical problem, the technical scheme that the utility model adopts is: the jack type bearing puller, comprise: jack, thrust beam and a pair of hook, the central authorities of thrust beam are provided with push block, described jack is located in the push block, the end of the propulsion arm of jack is provided with the pushing tow head, the top of described hook offers the locating hole that matches with thrust beam, the clamping part of the bottom of hook for matching with the outer ring of bearing, one of them hook is offering a pair of locking through hole that is parallel to each other near the clamping part place, another hook is offering a pair of locking screw pit that is parallel to each other near the clamping part place, a pair of clamping screw passes respectively two locking through holes of a corresponding side hook, be located in by screw thread in the corresponding locking screw pit of opposite side hook, described pushing tow head passes between this a pair of clamping screw.

Described hook is being respectively arranged with jut near its clamping part place to both sides, and the jut of both sides forms installation portion with the connecting portion that is connected two side projecture parts, and described locking through hole and locking screw pit are arranged on the installation portion of corresponding hook.

The beneficial effects of the utility model are: because hook can translation on thrust beam, so that the clamping part of hook contacts with bearing maintenance face all the time, thereby what guaranteed bearing is subjected to force direction consistent with the cross section of bearing, and, by two clamping screws a pair of hook is tightened up on the outer ring of bearing, the propulsion arm of jack is between two clamping screws, so that bearing is stressed more balanced, thereby guaranteed that in the process of the axle in the pushing tow bearing, bearing can not be out of shape.In addition, hook is respectively arranged with jut near its clamping part place to both sides at hook, offers locking through hole or locking screw pit thereby can use this jut, so just can be so that the body of hook is narrow, not only so that wholely draw horse lighter, but also reduced material cost.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Among the figure: 1, thrust beam, 10, push block, 2, jack, 21, propulsion arm, 3, hook, 31, jut, 32, clamping part, 4, hook, 41, jut, 42, clamping part, 5, clamping screw, 6, the pushing tow head.

The specific embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.

As shown in Figure 1, jack type bearing puller described in the utility model comprises: jack 2, thrust beam 1 and hook 3 and 4, and the central authorities of thrust beam 1 are provided with push block 10, described jack 2 is located in the push block 10, and the end of the propulsion arm 21 of jack 2 is provided with pushing tow head 6; The top of described hook 3 offers the locating hole that matches with a side of thrust beam 1, the top of described hook 4 offers the locating hole that matches with the opposite side of thrust beam 1, here, the geomery of thrust beam 1 both sides is the same, locating hole on the hook 3 and 4 too, therefore, hook 3 and 4 can be set in any side of thrust beam 1 interchangeably, hook 3, the clamping part 32 and 42 of 4 bottom for matching with the outer ring of bearing, one of them hook 3 is offering a pair of locking through hole that is parallel to each other near clamping part 32 places, another hook 4 is offering a pair of locking screw pit that is parallel to each other near clamping part 42 places, and, the central lines of corresponding locking through hole and locking screw pit, these two center lines are in a plane, and vertical with the center line of the propulsion arm 21 of jack 2, a pair of clamping screw 5 passes respectively two locking through holes of hook 3 one sides, be located in by screw thread in the corresponding locking screw pit of hook 4 one sides, the pushing tow head 6 that is arranged on the propulsion arm 21 of jack 2 passes between this a pair of clamping screw 5.In the present embodiment, described hook 3 is being respectively arranged with jut 31 near its clamping part 32 places to both sides, the jut 31 of both sides forms locking through hole installation portion with the connecting portion that is connected two side projecture parts 31, described locking through hole is opened on the locking through hole installation portion, described hook 4 is being respectively arranged with jut 41 near its clamping part 42 places to both sides, the jut 41 of both sides forms locking screw pit installation portion with the connecting portion that is connected two side projecture parts 41, and described locking screw pit is opened on the locking screw pit installation portion; During actual fabrication, a pair of locking through hole is opened in respectively on two juts 31 of hook 3, and a pair of locking screw pit is opened in respectively on two juts 41 of hook 4, such structure, can reduce the width of hook 3 and 4 bodies, alleviate and draw horse weight, reduce material cost.

During use, with hook 3 and 4 translations on thrust beam 1, so that hook 3 contacts with the outer ring maintenance face of bearing with 42 all the time with 4 clamping part 32, then, by a pair of clamping screw 5 hook 3 and 4 is tightened up on the outer ring of bearing, because the propulsion arm 21 of jack 2 is between these two clamping screws 5, so that bearing is stressed more balanced, thereby guaranteed that in the process of the axle in the pushing tow bearing, bearing can not be out of shape.

Claims

1. jack type bearing puller, comprise: jack, thrust beam and a pair of hook, the central authorities of thrust beam are provided with push block, described jack is located in the push block, the end of the propulsion arm of jack is provided with the pushing tow head, it is characterized in that: the top of described hook offers the locating hole that matches with thrust beam, the clamping part of the bottom of hook for matching with the outer ring of bearing, one of them hook is offering a pair of locking through hole that is parallel to each other near the clamping part place, another hook is offering a pair of locking screw pit that is parallel to each other near the clamping part place, a pair of clamping screw passes respectively two locking through holes of a corresponding side hook, be located in by screw thread in the corresponding locking screw pit of opposite side hook, described pushing tow head passes between this a pair of clamping screw.

2. jack type bearing puller as claimed in claim 1, it is characterized in that: described hook is being respectively arranged with jut near its clamping part place to both sides, the jut of both sides forms installation portion with the connecting portion that is connected two side projecture parts, and described locking through hole and locking screw pit are arranged on the installation portion of corresponding hook.