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Spiral eccentric claw bearing extractor

A screw-type and extractor technology, which is applied in hand-held tools, metal processing, metal processing equipment, etc., can solve the problems that the screw cannot drive the jaws to expand, the screw cannot disassemble the bearing, etc.

Active Publication Date: 2017-06-06
NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention solves the defect that the jaws of the existing bearing removal device will rotate with the screw, and the screw cannot drive the jaws to expand, and provides a spiral eccentric claw bearing extractor, the screw can be clamped, and the eccentric claw can be opposite to the screw. Turns smoothly, thus hooking the inner ring of the bearing
[0009] The present invention also solves the problem that the existing bearing dismounting device realizes the axial movement of the screw by turning the nut, which easily causes the synchronous rotation of the screw and the idling cannot disassemble the bearing. It provides a spiral eccentric claw bearing extractor, the top sleeve and There is a clamping part on the screw, through which the relative rotation between the screw and the top sleeve can be smoothly realized

Method used

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  • Spiral eccentric claw bearing extractor
  • Spiral eccentric claw bearing extractor
  • Spiral eccentric claw bearing extractor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A kind of screw-type eccentric claw bearing extractor (see attached figure 1 attached figure 2 ), including a top sleeve 4 for matching with the shaft hole wall and a screw rod 8 for extending into the inner ring of the bearing. One end of the top sleeve is a closed structure, and a threaded hole is provided in the closed middle, and the screw is screwed into the threaded The hole is screwed with the top sleeve. The other end of the top sleeve is a cavity, and the inner diameter of the cavity is larger than the outer diameter of the bearing outer ring. The end surface of the top sleeve where the opening of the cavity is located matches the shaft hole wall, and radial circular holes are arranged on the outer peripheral wall of the top sleeve. , a drive component such as a drive rod can be inserted into the circular hole to drive the top sleeve to rotate.

[0034]One end of the screw rod corresponding to the cavity is provided with a retaining ring 9 that...

Embodiment 2

[0036] Embodiment 2: A kind of screw-type eccentric claw bearing extractor (see attached Figure 4 ), the screw rod is provided with two symmetrical eccentric connecting holes in the axial direction, the two connecting holes are independent of each other, and a tie rod is respectively fixed in the two connecting holes, and the ends of the tie rods are provided with radial pull claws, the two pull The claws are on the same plane perpendicular to the axis of the screw. When the two claws are close to each other, they are in the circle where the outer diameter of the screw is located. When they are close to each other, the contact surface is at the diameter of the screw. The difference in hole eccentricity. Refer to Example 1 for all the other structures.

[0037] Rotate the two pull rods so that the two pull claws protrude out of the screw rod respectively, and tighten them with nuts at the same time. At this time, the top sleeve can be turned to move the screw axially, so tha...

Embodiment 3

[0038] Embodiment 3: A kind of screw-type eccentric claw bearing extractor (see attached Figure 6 ), the part of the pull rod close to the pull claw is provided with external teeth, the axial position of the screw rod is provided with a rotating shaft 14, the end of the rotating shaft is fixed with a driving tooth meshing with the external teeth, the position of the driving tooth is staggered from the pulling claw, and the other part of the rotating shaft One end protrudes out of the screw rod, and the extended end of the rotating shaft is provided with a collet through which the rotating shaft can be rotated. A fixing nut is screwed on the rotating shaft. After the rotating shaft is rotated, the rotating shaft and the screw rod are fixed by the fixing nut. Refer to embodiment 1 or embodiment 2 for all the other structures.

[0039] Turn the rotating shaft, the rotating shaft drives the pull rod to rotate through the driving teeth and the outer teeth, the pulling rod drives t...

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Abstract

The invention relates to a screw type eccentric pull jaw bearing extractor which overcomes the defect that because an existing clamping jaw of a bearing dismantling device can rotate along with a screw rod, the screw rod cannot drive the clamping jaw to be unfolded. The screw type eccentric pull jaw bearing extractor comprises an ejector sleeve and a screw rod which are connected in a screwed mode. At least one eccentric connecting hole is formed in the screw rod in the axial direction, a pull rod penetrates in the connecting hole and is fixed, the end of the pull rod stretches out of the screw rod, a radial jaw is fixed to the end of the of the pull rod, the end of the pull jaw stretches out of the pull rod, the distance from the end of the pull jaw to the center line of the pull rod is equal to the length of the pull jaw, the length of the pull jaw is smaller than or equal to the sum of the radius of the screw rod and the eccentric distance of the connecting hole, and the length of the pull jaw is larger than the difference between the radius of the screw rod and the eccentric distance of the connecting hole. The pull jaw can be stretched out of the screw rod or hidden into a circle where the screw rod is located by rotating the pull rod, the end of the pull rod can stretch into an inner ring of a bearing when the pull jaw is hidden in, after the end of the pull rod stretches into the inner ring of the bearing, the pull rod is rotated again to make the pull jaw stretch out and hook the inner ring of the bearing, and thus the bearing in a blind hole can be detached.

Description

technical field [0001] The invention relates to a bearing extractor, in particular to a spiral eccentric claw bearing extractor used for extracting a bearing from a blind hole. Background technique [0002] Bearing is an important component in contemporary mechanical equipment. In the process of mechanical transmission, bearing plays the role of fixing and reducing the friction coefficient of load. When other parts move relative to each other on the shaft, the bearing can reduce the friction coefficient during the power transmission process and keep the shaft center position fixed. [0003] The bearing has an inner ring and an outer ring, balls or rollers are installed between the inner ring and the outer ring through a cage, the outer ring of the bearing is assembled in the shaft hole, and the inner ring of the bearing is fixed to the shaft. Some bearings are easier to disassemble after assembly, but for some mechanical devices where the outer ring of the bearing is assemb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P19/00
CPCB25B27/062
Inventor 程教泉谭艳军王瑞平
Owner NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION