CN102699862A

CN102699862A - Jack-type Rama

Info

Publication number: CN102699862A
Application number: CN2012102256598A
Authority: CN
Inventors: 宋虎
Original assignee: ZHANGJIAGANG TIANDA SPECIAL KNIFE CO Ltd
Current assignee: ZHANGJIAGANG TIANDA SPECIAL KNIFE CO Ltd
Priority date: 2012-07-03
Filing date: 2012-07-03
Publication date: 2012-10-03

Abstract

The invention discloses a jack-type Rama which can be provided with a two-claw type or three-claw type hook claw according to actual conditions. The jack-type Rama comprises at least one pair of hook claws, a pushing base and a jack inserted into the pushing base, wherein a pushing head is arranged at the end of a pushing rod of the jack; two hook claw arm groups are arranged on the pushing base; one hook claw arm group comprises two hook claw arms which are circumferentially and uniformly arranged; the other hook claw arm group comprises three hook claw arms which are circumferentially and uniformly arranged; and when the jack-type Rama is used every time, the hook claw arms in one hook claw arm group are respectively connected with the corresponding hook claws through a connecting plate. The Rama is widely applied to detachment of fastening components, such as various shaft couplers, gears, bearings and belt wheels, on shafts.

Description

Jack type draws horse

Technical field

The present invention relates to a kind of horse of drawing that axles such as various shaft couplings, gear, bearing and belt pulley are gone up securing member of dismantling, refer more particularly to a kind of jack type 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; Its structure comprises: push block be located in push block in jack and be movably hinged (or fixed connection) one group of hook (two pawl formula or three-pawl type) together with push block, the end of the propulsion arm of jack is provided with the pushing tow head.During use, hook is caught the object that draws, and the pushing tow head of the end of the propulsion arm through being arranged on jack will be drawn object to pull out.

Present jack type draws horse, and its push block can only be installed a kind of hook of structure, or two pawl formula hooks are installed, or the three-pawl type hook is installed that is:, and versatility is relatively poor; And hook is fixed with respect to the installation site of push block, can not regulate the relative position with push block according to actual needs, thereby restrict its scope of application; In addition, in the pushing tow process, the head of pushing tow head (top) is very easy to impaired, has shortened the service life of pushing tow head.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of and can draw horse according to the jack type that actual conditions are installed two pawl formulas or three-pawl type hook.

For solving above-mentioned technical problem; The technical scheme that the present invention adopts is: a kind of jack type draws horse, comprising: at least one pair of hook, push block and be located in the jack in the push block, and the end of the propulsion arm of jack is provided with the pushing tow head; Described push block is provided with two hook arm groups; Wherein, comprise two hook arms of circumferentially evenly arranging in the hook arm group, comprise three hook arms of circumferentially evenly arranging in another hook arm group; During each the use, have only a hook arm in the hook arm group to link to each other with corresponding hook through connecting plate respectively.

The concrete connected mode of described connecting plate and hook and hook arm is: the two ends of connecting plate offer locating hole respectively; Offer locating hole on the described hook arm; Offer at least one pair of locating hole on the described hook, the two ends of connecting plate link to each other with hook, hook arm through screw bolt and nut respectively.

Be embedded with hard ball on the end face of said pushing tow head.

Described hard ball is a steel ball.

The invention has the beneficial effects as follows: owing to be detachable structure between hook arm among the present invention and the hook, and push block is provided with two hook arm groups; Wherein, comprise two hook arms of circumferentially evenly arranging in the hook arm group, comprise three hook arms of circumferentially evenly arranging in another hook arm group; During each the use; Can on the hook arm group therein hook be installed according to actual needs, versatility is stronger.In addition, through on hook, offering a plurality of locating holes, thereby can regulate the relative position of hook and push block according to actual needs, widen its scope of application; In addition, be embedded the steel ball in pushing tow head portion, in the progradation of the propulsion arm of jack, steel ball and contact surface form rolling friction, and the impaired probability of steel ball reduces greatly, has prolonged the service life of pushing tow head.

Description of drawings

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

Fig. 2 is the structural representation of overlooking direction of push block among Fig. 1.

Among Fig. 1 to Fig. 2: 1, push block, 10, the jack installing hole, 11, the hook arm, 12, the hook arm, 13, the hook arm; 14, hook arm, 2, jack, 21, propulsion arm, 22, the pushing tow head, 23, lever; 3, hook, 4, connecting plate, 5, steel ball, 7, demolition part, 8, axle.

The specific embodiment

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

Like Fig. 1, shown in Figure 2; A kind of jack type of the present invention draws horse, comprising: a pair of hook 3, push block 1 and be located in the jack 2 in the jack installing hole 10 of push block 1, and the end of the propulsion arm 21 of jack 2 is provided with pushing tow head 22; Be embedded with steel ball 5 on the end face of pushing tow head 22; Described push block 1 is provided with two hook arm groups, wherein, comprises two hook arms of circumferentially evenly arranging 11 and 13 in the hook arm group; Comprise three hook arms of circumferentially evenly arranging 11,12 and 14 in another hook arm group; Wherein hook arm 11 is multiplexing two hook arm groups, when using, has only a

hook arm

11,13 or a

hook arm

11,12 in the hook arm group to link to each other with corresponding hook 3 through connecting plate 4 respectively with 14 at every turn; Connecting plate 4 with the concrete connected mode of hook 3 and hook arm is: the two ends of connecting plate 4 offer locating hole respectively; Offer locating hole on the described hook arm; Offer a pair of locating hole on the described hook 3, the two ends of connecting plate 4 link to each other with

corresponding hook arm

11,12,13 or 14 with hook 3 through screw bolt and nut respectively.

During use; Usually the end face of the axle 8 in the demolition part 7 is offered a tapered blind hole that matches with pushing tow head 22, with two pawl formulas or three-pawl type hook 3 and the pushing tow head 22 that is arranged on the propulsion arm 21 of jack 2 demolition part 7 is fixed on the described horse back that draws, then; Back and forth press down the lever 23 on the jack 2; Make propulsion arm 21 be with pushing tow head 22 steadily to advance forward, hook 3 is drawn back with respect to propulsion arm 21, and demolition part 7 is pulled out from axle 8.

Claims

1. jack type draws horse; Comprise: at least one pair of hook, push block and be located in the jack in the push block; The end of the propulsion arm of jack is provided with the pushing tow head, it is characterized in that: described push block is provided with two hook arm groups, wherein; Comprise two hook arms of circumferentially evenly arranging in the hook arm group; Comprise three hook arms of circumferentially evenly arranging in another hook arm group, when using, have only a hook arm in the hook arm group to link to each other with corresponding hook through connecting plate respectively at every turn.

2. jack type as claimed in claim 1 draws horse; It is characterized in that: the concrete connected mode of described connecting plate and hook and hook arm is: the two ends of connecting plate offer locating hole respectively; Offer locating hole on the described hook arm; Offer at least one pair of locating hole on the described hook, the two ends of connecting plate link to each other with hook, hook arm through screw bolt and nut respectively.

3. according to claim 1 or claim 2 jack type draws horse, it is characterized in that: be embedded with hard ball on the end face of said pushing tow head.

4. jack type as claimed in claim 3 draws horse, it is characterized in that: described hard ball is a steel ball.