CN2787389Y - Bearing holder - Google Patents

Abstract

The utility model provides an improved bearing holding apparatus for dismounting mechanical parts. The utility model is suitable for dismounting small-size bearings of which the diameter is smaller than 80 millimeters, and other small-size gear wheels and small-size couplings. The utility model is characterized in that two arced pulling claws are hooped by a sleeve hoop; one end of the arced pulling force is hooked into a circular contact surface by a claw hook, and thus the pulling force is acted on the bearing to be dismounted; the claw hook on the other end is correspondingly embedded in an annular groove of a step nut; the step nut is meshed with a screw rod which penetrates through the center of the step nut; the screw rod holds a crankshaft of the bearing to be dismounted. Under the function of the external force, the step nut rotates to generate displacement and thus the dismounted member is dismounted.

Description

Bearing gripping apparatus

Affiliated technical field

Husky and a kind of hand tools that is used for the dismounting of small-sized machine part of the utility model is applicable to that diameter is less than small size bearing and other miniature gears of 80 millimeters, the dismounting of small-sized shaft coupling.

Background technology

Bearing gripping apparatus originally, exist following deficiency, though promptly two of suit arcs that are the semicircle tubular draw cylindrical shell of the identical mutually formation of youngster two Chu Shi on screw mandrel, and be slightly larger than tubular cuff hoop look this pulling claw radius and that match by one and make its claw hook unlikely scattering when hooking by but bearing, but the other end of two pulling claws, its inner headed face is processed into the internal thread that is meshed with screw mandrel, because this internal thread system is made up of two semicircles, thereby combination does not become a full circle, thereby when meshing with screw mandrel, not only engagement property is poor, and owing to the minimizing of engagement cross section has reduced the load-carrying ability of bearing, this in addition structure has also caused the difficulty of machining, is not easy to operation during main being to use.

Summary of the invention

In order to address the above problem, when the purpose of this utility model provides a kind of use mounting or dismounting convenient, be easy to the Bearing gripping apparatus that machining and screw mandrel engagement property well also can increase load-carrying ability.

Task of the present utility model is finished in the following way, two are the semicircle tubular and close the arc pulling claw that constitutes a cylindrical shell mutually certainly, with unloaded the other end inner headed face that bearing contacts a side, also make to be the arc claw hook into by original internal thread, so that this arc claw hook can be rabbeted relatively in the annular groove of step nut, this step nut system is meshed with the screw mandrel that passes its center.

The utility model has the advantages that rational in infrastructurely, mounting or dismounting are convenient.

Description of drawings

Accompanying drawing is a longitudinal sectional view of the present utility model.

The specific embodiment

With reference to accompanying drawing, this gripping apparatus has two to be the semicircle tubular and the arc pulling claw (6) of the cylindrical shell of formation that coincide mutually, its outer surface has a cuff that matches (5) to wale, the claw hook (1) of arc pulling claw (6), can live to be unloaded bearing (2) towards an end hook of arbor (3), the claw hook of its other end (7) can be rabbeted relatively in the annular groove of step nut (8), this step nut (8) is to be meshed with the screw mandrel that passes its center (9), at first tighten screw mandrel (9) during work, make it to withstand arbor (3), rotate step nut (8) with spanner then, like this, arc pulling claw (6) is by its claw hook (1), directly masterpiece is used in and is unloaded on the bearing (2), thereby will be unloaded slowly by inloading part, the frictional force that produces when rotating on the end face of arbor (3) in order to reduce screw mandrel (9) can be installed a stream pearl (4) on screw mandrel and arbor contact-making surface.

Claims (1)

1, a kind of Bearing gripping apparatus, two are the semicircle tubular and close the arc pulling claw that constitutes a cylindrical shell mutually certainly, outer surface has a cuff, arc pulling claw one end has the ring-type claw hook, it is characterized in that: two other ends that are the arc pulling claw of semicircle tubular also have the ring-type claw hook, the claw hook interlocking of this end is in the annular groove of step nut, and this closes the rank nut and is meshed with the screw mandrel that passes its center.