CN2701594Y

CN2701594Y - Drawing device

Info

Publication number: CN2701594Y
Application number: CN 200420040641
Authority: CN
Inventors: 李处宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-19
Filing date: 2004-05-19
Publication date: 2005-05-25
Anticipated expiration: 2014-05-19

Abstract

The utility model discloses a drawing device which comprises a support rack, wherein a sleeve barrel provided with internal threads is fixedly connected to the center of the bottom surface of the support rack, a positioning plate is arranged above the support rack, a screw rod is penetrated through an insertion through hole of the middle part of the positioning plate to be connected with the sleeve barrel, support springs are sheathed on the screw rod arranged between the support rack and the positioning plate, and three groups of connecting plates hinged on the support rack are evenly distributed in the radial direction of the support rack and are basically parallel to the lower end of the sleeve barrel; the bottom of each of the connecting plates is hinged together with the upper middle part of a drawing claw, a drawing claw opening adjuster is arranged between the top part of the drawing claw and each of the connecting plates, the contact faces of the upper part of the drawing claw and the outer wall of the sleeve barrel are cambered, and adjacent connecting plates are tensioned by pullback springs. The utility model is suitable for demounting bearings and cylinder sleeves of different cylinder diameters, and is convenient in use; besides, the utility model has the characteristics of simple structure, firmness and durability.

Description

A kind of drawbench

Technical field

The utility model relates to a kind of instrument of dismantling cylinder sleeve.

Background technology

In motor vehicle repair, replacing cylinder sleeve, bearing are an indispensable job, and the instrument of traditional dismounting cylinder sleeve needs to change pull head according to the cylinder diameter size in use, and the yielding fracture of pull head, wastes time and energy.

Summary of the invention

Technical problem to be solved in the utility model is: the instrument that overcomes traditional dismounting cylinder sleeve needs to change pull head according to the cylinder diameter size in use, and the yielding fracture of pull head, the drawback that wastes time and energy provides a kind of and can adapt to various cylinder diameter sizes, solid drawbench durable, easy to use.

The technical scheme that its technical problem that solves the utility model adopts is: comprise bracing frame, its design feature is to be connected with tapped sleeve on the bottom center position of described bracing frame, the top of bracing frame is provided with limiting plate, the inserting hole that leading screw passes the limiting plate middle part is connected with sleeve, on the leading screw between bracing frame and the limiting plate, be set with support spring, be evenly equipped with three groups of connecting plates that are hinged on the bracing frame in the radial direction at bracing frame, connecting plate is roughly concordant with the sleeve lower end, the position is hinged on the upper side at the middle part of each connecting plate bottom and pulling claw, be provided with pulling claw opening adjusting device between the top of pulling claw and the connecting plate, the contact-making surface of pulling claw top and sleeve outer wall is an arcuate structure, is strained by extension spring between the adjacent connecting plate.

Be evenly equipped with three length-adjustable spacing pillars in the radial direction at limiting plate.

The bottom of pulling claw is provided with the opening stopping means.

Described pulling claw opening adjusting device comprises the limiting plate that is fixed on the connecting plate, be provided with a hole at the top of pulling claw, limiting plate is provided with and the corresponding inserting hole in described silk hole, adjust to pass the inserting hole of screw mandrel from limiting plate and be connected on the described silk hole, on the screw mandrel between silk hole and the limiting plate, be set with holddown spring.

Bracing frame is " Y " shape, and three groups of connecting plates are hinged on described " Y " shape arm accordingly.

After adopting said structure,, therefore can adapt to the cylinder sleeve of dismantling different cylinder diameters because the opening scope of pulling claw is adjustable, simultaneously by pulling claw opening adjusting device, make the pull head and the cylinder sleeve relative fixed of pulling claw, limiting plate is placed the cylinder head outside, just rotatable leading screw, by pulling claw cylinder sleeve is slowly pulled out body, avoid injuring body, therefore easy to use, and have simple in structure, solid durable characteristics, based on same principle, this drawbench dismounting bearing is convenient equally.

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Description of drawings

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

Fig. 2 is the vertical view of limiting plate among Fig. 1;

Fig. 3 is the vertical view of bracing frame among Fig. 1.

The specific embodiment

Drawbench shown in the drawings, comprise bracing frame 1, the bottom center position of bracing frame 1 is connected with tapped sleeve 2, the top of bracing frame 1 is provided with limiting plate 4, the inserting hole 5 that leading screw 3 passes limiting plate 4 middle parts is connected with sleeve 2, on the leading screw 3 between bracing frame 1 and the limiting plate 4, be set with support spring 6, be evenly equipped with three groups of connecting plates 7 that are hinged on the bracing frame 1 in the radial direction at bracing frame 1, connecting plate 7 is roughly concordant with sleeve 2 bottoms, the position is hinged on the upper side at the middle part of each connecting plate 7 bottom and pulling claw 8, be provided with pulling claw opening adjusting device 9 between the top of pulling claw 8 and the connecting plate 7, this pulling claw opening adjusting device 9 comprises the limiting plate 13 that is fixed on the connecting plate 7, be provided with a hole at the top of pulling claw 8, limiting plate 13 is provided with and the corresponding inserting hole in described silk hole, adjust to pass the inserting hole of screw mandrel 15 from limiting plate 13 and be connected on the described silk hole, on the screw mandrel between silk hole and the limiting plate 13, be set with holddown spring 14, certainly, also can on limiting plate 13, be provided with a hole, adjust the top that screw mandrel 15 withstands on pulling claw 8; The contact-making surface of pulling claw 8 tops and sleeve 2 outer walls is an arcuate structure, in order to guarantee that pulling claw 8 is a fulcrum with sleeve 2 outer walls, adjust its opening angle, the bottom of this pulling claw 8 also is provided with opening stopping means 12, guarantee pulling claw 8 and drawn object accurately to locate, strain by extension spring 10 between the adjacent connecting plate 7.When limiting plate 4 and be supported on distance between the workpiece working face and be not enough to pull out when being drawn object (cylinder sleeve, bearing), can be at uniform in the radial direction three length-adjustable spacing pillars 11 of limiting plate 4, in order between restriction limiting plate 4 and the support works face enough stretching distances to be arranged.Preferred bracing frame 1 is " Y " shape, three groups of connecting plates 7 are hinged on described " Y " shape arm accordingly, each group connecting plate 7 is two of symmetry, these two connecting plate two ends are installed in respectively on " Y " shape arm and the pulling claw 8, limiting plate 13 is fixed between these two connecting plates, limiting plate 4 also is " Y " shape, has slotted eye 16 on each " Y " shape arm, and spacing pillar 11 is installed in the slotted eye 16 accordingly.

Claims

1, a kind of drawbench, comprise bracing frame (1), it is characterized in that being connected with tapped sleeve (2) on the bottom center position of described bracing frame (1), the top of bracing frame (1) is provided with limiting plate (4), the inserting hole (5) that leading screw (3) passes limiting plate (4) middle part is connected with sleeve (2), on the leading screw (3) between bracing frame (1) and the limiting plate (4), be set with support spring (6), be evenly equipped with three groups of connecting plates (7) that are hinged on the bracing frame (1) in the radial direction at bracing frame (1), connecting plate (7) is roughly concordant with sleeve (2) lower end, the position is hinged on the upper side at the middle part of each connecting plate (7) bottom and pulling claw (8), be provided with pulling claw opening adjusting device (9) between the top of pulling claw (8) and the connecting plate (7), the contact-making surface of pulling claw (8) top and sleeve (2) outer wall is an arcuate structure, is strained by extension spring (10) between the adjacent connecting plate (7).

2, drawbench according to claim 1 is characterized in that being evenly equipped with three length-adjustable spacing pillars (11) in the radial direction at described limiting plate (4).

3, drawbench according to claim 1 and 2 is characterized in that the bottom of described pulling claw (8) is provided with opening stopping means (12).

4, drawbench according to claim 1, it is characterized in that described pulling claw opening adjusting device (9) comprises the limiting plate (13) that is fixed on the connecting plate (7), top at pulling claw (8) is provided with a hole, limiting plate (13) is provided with and the corresponding inserting hole in described silk hole, adjust to pass the inserting hole of screw mandrel (15) from limiting plate (13) and be connected on the described silk hole, on the screw mandrel between silk hole and the limiting plate (13), be set with holddown spring (14).

5, according to claim 1,2 or 4 described drawbench, it is characterized in that described bracing frame (1) is " Y " shape, three groups of connecting plates (7) are hinged on described " Y " shape arm accordingly.