CN201079945Y - Puller - Google Patents

Abstract

The utility model relates to a novel puller, which comprises a screw rod, a cross beam and two pulling claws, wherein the screw rod is connected with the cross beam through a thread, and suspension loops are arranged on the pulling claws, and are respectively nested on the cross beams at the both sides of the screw rod. The utility model is characterized in that circular arc-shaped saliencies are arranged on the pulling claws, and the arc-shaped saliencies on the two pulling claws form a puller ring; the puller of the utility model performs improvement to the former puller structure, and has the advantages that the structure is simple, the operation is convenient, and the puller avoids that detachable parts, such as bearings, etc. are damaged during the dissembling process.

Description

Novelly draw horse

Technical field

The utility model relates to a kind of horse of drawing, and relates in particular to a kind of novel horse of drawing.

Background technology

During from axle dismounting bearing, usually to use a kind of being called the specific purpose tool (claiming " pulley extractor ", " drawbench " again) of " drawing horse ".Have now and draw horse mostly to be pawl Shi Lama, generally include screw mandrel, screw and 2,3 pulling claws that hang on (or being hinged on) screw.During use, pulling claw is buckled on the outer rim of bearing, withstands with screw mandrel on the end face of axle, rotary screw rod can spur bearing.Mainly contain following defective: because the front end of pulling claw is main stress point, so thicker, if too narrow when narrow and small before and after the bearing, pulling claw can't fasten bearing, can not use (just can not dismantle with pawl Shi Lama as the bearing on the wire drawing machine take-up axle).Two, pulling claw length is fixed, all inconvenience uses when axle is long, too short, restricted application.Three, stressed when excessive, the easy slippage of pulling claw.

For overcoming the above problems, Chinese patent ZL200620054199.7 discloses a kind of novel horse of drawing, comprise screw mandrel, screw and two pull bars, wherein, a transverse arm is respectively stretched out in the screw both sides, the rear end of pull bar is provided with hangers, and be enclosed within respectively on the transverse arm of screw both sides, it is characterized in that: the front portion of described pull bar is fixed with an arcuate member respectively, the inboard of described arcuate member is provided with inward flange, its radial section is semi arch or minor arc, and the joint of two arcuate members connects by bolt or screw, forms and draws Ma Quan.Though above structure has well solved the defective of pawl Shi Lama, but still can not dismantle some bearing, bearing as shown in Figure 9 comprises bearing inner ring 17 and outer shroud 16, in ring 17 littler than the thickness of outer shroud 16, can damage bearing when using this to draw horse dismounting bearing.

Summary of the invention

The purpose of this utility model is how to overcome above-mentioned defective of drawing horse, provides a kind of simple in structure, easy to use, and can not damage split inloading part novelly draw horse.Goal of the invention of the present utility model is achieved through the following technical solutions:

A kind of novel horse of drawing comprises screw rod, crossbeam and two pulling claws, and screw rod is threaded with crossbeam, pulling claw is provided with hangers, and be enclosed within respectively on the crossbeam of screw rod both sides, wherein: described pulling claw is provided with arc-shaped convex, and the arc convex composition on described two pulling claws draws Ma Quan.

The above-mentioned novel horse of drawing, wherein: described pulling claw comprises arm-tie and claw-plate, the junction of described pull bar and described claw-plate is bolted to connection.

The above-mentioned novel horse of drawing, wherein: described arm-tie is provided with screw, with crossbeam by bolting together.

The above-mentioned novel horse of drawing, wherein: described screw rod is provided with the spanner that is threaded.

The utility model draws horse to be provided with arc-shaped convex on pulling claw, and the arc convex on two pulling claws is formed and drawn Ma Quan, has simple in structure, easy to use, can not damage the advantage of split inloading part, be fit to dismounting bearing, gear, transformer etc., be particularly suitable for and dismantle the bearing on the motor.

Description of drawings

Fig. 1 is that the utility model draws the horse structural representation;

Fig. 2 is the utility model beam structure vertical view;

Fig. 3 is the utility model pulling claw structure vertical view;

Fig. 4 is the utility model pulling claw structure left view;

Fig. 5 is the utility model pulling plate structure schematic diagram;

Fig. 6 is the utility model claw-plate structural representation;

Fig. 7 is the rotating transformer structures cutaway view;

Fig. 8 is the working state schematic representation that the utility model draws horse dismounting rotary transformer;

Fig. 9 is the bearing arrangement cutaway view;

Figure 10 is the working state schematic representation that the utility model draws horse dismounting motor bearings.

The specific embodiment

With embodiment the utility model is described in further detail with reference to the accompanying drawings below:

According to Fig. 1 to Fig. 6, the utility model comprises: spanner 1, screw rod 2, crossbeam 4, pulling claw 5 comprise arm-tie 7 and claw-plate 6, wherein said screw rod 2 is threaded with described crossbeam 4, the rear end of described arm-tie 7 is provided with hangers 9, and be enclosed within respectively on the described crossbeam 4 of described screw rod 2 both sides, the front portion of described arm-tie 7 can be fixedly connected with a claw-plate 6, and described claw-plate 6 is provided with arc-shaped convex, and the arc on described two claw-plates 6 can be formed and draws Ma Quan; Screw rod 2 is provided with the spanner 1 that is threaded with screw rod 2, pulls screw rod 2 easily.According to shown in Figure 2, crossbeam 4 is provided with screwed hole 8 that is threaded with screw rod 2 and two screwed holes 19 that are used for fixing described arm-tie 5; Fig. 3 is a pulling claw structure vertical view; Fig. 4 is a pulling claw structure left view; Arm-tie 7 rear end hangers 9 places as shown in Figure 5 are provided with the unthreaded hole 10 that communicates with hangers, and bolt 3 passes the unthreaded hole 10 of arm-tie 7 and is threaded with screwed hole 19 on the crossbeam 4, and arm-tie 7 is fixed on the crossbeam 4, and front end is provided with screwed hole 20; Fig. 6 is a claw-plate 6, claw-plate 6 is provided with arc-shaped convex 11 and unthreaded hole 12, the screwed hole 20 and the unthreaded hole 12 on the claw-plate 6 that can use bolt to pass on the arm-tie 7 are fixed together described arm-tie 7 and described claw-plate 6, in addition, arm-tie can be made into the length structure different with width to be used to dismantle the different part of size with claw-plate.

The concrete device of following basis illustrates the course of work of the present utility model: as Fig. 7 is motor rotary transformer cutaway view, rotary transformer 13 and rotor mandrel contact, 14 is rubber bodies and fine copper wire structure, draw horse not contact, otherwise whole rotary transformer will damage, 15 is the becket on the rotary transformer, draw horse to have only to contact just and can not damage rotary transformer with becket 15, and draw the sub-fraction that horse can only contacting metal ring 15 places, becket 15 has only 2-3mm wide, can only use the horse structure of drawing of the present utility model.Fig. 8, is fixed on claw-plate on the arm-tie at first according to the size Selection of rotary transformer bottom metal ring 15 suitable arm-tie and claw-plate for dismounting rotary transformer working state schematic representation; According to the size of rotary transformer, the distance of regulating two arm-ties makes the arc-shaped convex on the claw-plate contact with the becket of rotary transformer then, uses bolt locking arm-tie, and claw-plate can not be swung, and comes off; At last, rotating spanner disassembles rotary transformer.

Fig. 9 is motor bearing cutaway view, 16 is outer race, its thickness is B, 17 is bearing inner ring, its thickness is A, the thickness B of the outer shroud 16 of bearing is greater than the thickness A of the interior ring 17 of bearing, and the 18th, annular boss uses when drawing horse dismounting bearing, can only use and draw horse to contact with the interior ring of bearing, if La Ma contacts with all the other positions of bearing, in the process of drawing horse dismounting bearing, will damage bearing, Figure 10 draws horse dismounting motor bearings work schematic diagram, according to the size Selection of motor bearings suitable arm-tie and claw-plate, arc-shaped convex and interior ring are contacted, use bolt locking arm-tie, claw-plate can not be swung, come off, at this moment, draw horse not have to contact, when dismounting, can not damage bearing with the remainder of bearing; At last, rotating spanner disassembles motor bearings.

The specific embodiment of the above is a better embodiment of the present utility model; be not to limit concrete practical range of the present utility model with this, the equivalence variation that all shapes according to the utility model, structure are done all is included in the protection domain of the present utility model.

Claims (4)

1. one kind is novelly drawn horse, comprises screw rod, crossbeam and two pulling claws, and screw rod is threaded with crossbeam, pulling claw is provided with hangers, and be enclosed within respectively on the crossbeam of screw rod both sides, it is characterized in that: described pulling claw is provided with arc-shaped convex, and the arc convex composition on described two pulling claws draws Ma Quan.

2. the novel horse of drawing according to claim 1, it is characterized in that: described pulling claw comprises arm-tie and claw-plate, the junction of described pull bar and described claw-plate is bolted to connection.

3. the novel horse of drawing according to claim 2, it is characterized in that: described arm-tie is provided with screwed hole, passes through bolting together with crossbeam.

4. the novel horse of drawing according to claim 1, it is characterized in that: described screw rod is provided with the spanner that is threaded.

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