CN102717360A - Jack-type bearing puller - Google Patents

Abstract

The invention discloses a jack-type bearing puller which is characterized in that the clamping parts of claws can be in surface contact with the outer ring of a bearing and the stress direction of the bearing is consistent with the cross section of the bearing. The jack-type bearing puller comprises a jack, a push beam and a pair of claws, wherein the center of the push beam is provided with a push block; the jack penetrates through the push block; the end part of a push rod of the jack is provided with a push head; the upper parts of the claws are provided with locating holes matched with the push beam, and the lower parts of the claws are provided with clamping parts matched with the outer ring of the bearing; the part, adjacent to the clamping part, of one claw is provided with a pair of parallel locking through hole; the part, adjacent to the clamping part, of the other claw is provided with a pair of parallel locking screw holes; one pair of locking bolts respectively passes through the two locking through holes of the claw at one side and passes through the corresponding locking screw holes of the claw at the other side; and the push head passes through the space between the pair of locking bolts. The jack-type bearing puller is especially suitable for detaching bearings.

Description

The jack type bearing draws horse

Technical field

The present invention relates to a kind of bearing that is specifically designed to the dismounting bearing and draw horse, refer more particularly to a kind of jack type bearing and draw horse.

Background technology

Draw horse to be also referred to as thruster, be widely used in dismantling axles such as various shaft couplings, gear, bearing, belt pulley and go up fastenings.By its pushing tow mode, be divided into screw usually 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 receives force direction and bearing of bearing in an angle, thereby to spool carrying out in the process of pushing tow in the bearing; Cause bearing deformation, influence the normal use of bearing.

Summary of the invention

Technical problem to be solved by this invention 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 of the cross section that receives force direction and bearing of bearing draw horse.

For solving above-mentioned technical problem; The technical scheme that the present invention adopted is: the jack type bearing draws horse; Comprise: jack, thrust beam and a pair of hook, the central authorities of thrust beam are provided with push block, and 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 said 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, and one of them hook is offering a pair of locking through hole that is parallel to each other near nip; Another hook is offering a pair of locking screw pit that is parallel to each other near nip; A pair of clamping screw passes two locking through holes of a corresponding side hook respectively, is located in through screw thread in the corresponding locking screw pit of opposite side hook, and described pushing tow head passes between this a pair of clamping screw.

Described hook is being respectively arranged with jut near its nip 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 invention has the beneficial effects as follows:, make the clamping part of hook contact with bearing maintenance face all the time, thereby the cross section that receives force direction and bearing that has guaranteed bearing is consistent because hook can translation on thrust beam; And; Through two clamping screws a pair of hook is tightened up on the outer ring of bearing, the propulsion arm of jack makes the stressed balanced more of bearing between two clamping screws; Thereby guaranteed that bearing can not be out of shape in the process of the axle in the pushing tow bearing.In addition; Hook is respectively arranged with jut near its nip 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 make and wholely draw horse lighter, but also reduced material cost.

Description of drawings

Fig. 1 is a structural representation of the present invention.

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 invention in detail.

As shown in Figure 1; Jack type bearing of the present invention draws horse, comprising: 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 said hook 3 offers the locating hole that matches with a side of thrust beam 1, and the top of said 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 with exchanging; The clamping part 32 and 42 of the bottom of hook 3,4 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 are and vertical with the center line of the propulsion arm 21 of jack 2, and a pair of clamping screw 5 passes two locking through holes of hook 3 one sides respectively; Be located in through 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, and 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,, make hook 3 contact with the outer ring maintenance face of bearing all the time with 42 with 4 clamping part 32 with hook 3 and 4 translations on thrust beam 1; Then; Through 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 between these two clamping screws 5, makes the stressed balanced more of bearing; Thereby guaranteed that bearing can not be out of shape in the process of the axle in the pushing tow bearing.

Claims (2)

1. a jack type bearing draws horse; Comprise: jack, thrust beam and a pair of hook, the central authorities of thrust beam are provided with push block, and 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 said 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, and one of them hook is offering a pair of locking through hole that is parallel to each other near nip; Another hook is offering a pair of locking screw pit that is parallel to each other near nip; A pair of clamping screw passes two locking through holes of a corresponding side hook respectively, is located in through screw thread in the corresponding locking screw pit of opposite side hook, and described pushing tow head passes between this a pair of clamping screw.

2. jack type bearing as claimed in claim 1 draws horse; It is characterized in that: described hook is being respectively arranged with jut near its nip 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.

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