CN201534314U

CN201534314U - Blind hole bearing puller

Info

Publication number: CN201534314U
Application number: CN200920187928XU
Authority: CN
Inventors: 胡平安
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-29
Filing date: 2009-09-29
Publication date: 2010-07-28
Anticipated expiration: 2019-09-29

Abstract

The utility model discloses a blind hole bearing puller which comprises a metal circular pipe (1), an expansion bolt (2) sheathed in the metal circular pipe and a nut (5), wherein the diameter of the metal circular pipe (1) is slightly smaller than the inner diameter of an inner ring (9) of a bearing (8) to be pulled, a plurality of axial open slots are formed at one end of the metal circular pipe (1), two ends of the expansion bolt (2) extend out of the metal circular pipe (1), the end with the open slots is conical, and the other end is threaded and coupled with the nut (5). The blind hole bearing puller can directly pull out and take out the bearing in a blind hole, and is characterized by simple structure, low cost, small volume, convenient use and the like.

Description

The blind hole bearing drawbench

Technical field

The utility model relates to a kind of mechanical field maintenance tool, and concrete is a kind of blind hole bearing drawbench.

Background technology

In the plant equipment maintenance process, often bearing need be taken out in blind hole, common pulling claw formula bearing drawbench can't use at this owing to its pulling claw can not find impetus, a kind of method is that metal bar and bearing are welded together, then it is pulled out by force, perhaps by behind the flame cutting damage bearing with its taking-up.Though these two kinds of methods can be taken out bearing, wait to get bearing and also scrapped thereupon, complicated operating process, the cost height, and cause unnecessary economic loss owing to bearing is destroyed.Also have a class blind hole bearing drawing special equipment on the market, complex structure, volume is big, and the price height is difficult for popularizing.

The utility model content

The purpose of this utility model is: design a kind of simple in structurely, with low cost, volume is little, blind hole bearing drawing device easy to use.

The technical solution adopted in the utility model is: the blind hole bearing drawbench, it is characterized in that it comprises that diameter is slightly less than the metal circular tube of waiting to pull out the bearing inner race internal diameter, is set in expansion bolt and nut in the metal circular tube, described metal circular tube one end is provided with some shaft orientation opening grooves, metal circular tube is stretched out at the expansion bolt two ends, and be taper at the open slot end, the other end connects with nut thread.

Adopt technique scheme, wait to get the open slot end reeve of drawbench in the bearing, with the tight spin nut of spanner, cause bolt to nut one side shifting, expansion-head extruding circular tube open end makes its outside expansion, pipe head after the expansion with wait that getting bearing inner race closely contacts, when tightness degree is enough big, bearing can be extracted in blind hole.

In sum, the beneficial effects of the utility model are: since the expansion of metal circular tube with wait that getting bearing inner race closely contacts, can directly bearing be extracted in blind hole, therefore waiting to get bearing is not destroyed, and such expansion structure is simple, manufacture difficulty is little, and is easy to operate, but each factory of extensive use or enterprise.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the profile of metal circular tube.

Fig. 3 is the expansion bolt schematic diagram.

Among the figure, 1, metal circular tube, 2, expansion bolt, 3, screw thread, 4, expansion-head, 5, nut, 6, packing ring, 7, open slot, 8, bearing to be pulled out, 9, inner ring.

The specific embodiment

The utility model blind hole bearing drawbench, as Fig. 1, Fig. 2 and shown in Figure 3, it comprises that diameter is slightly less than the metal circular tube 1 of waiting to pull out bearing 8 inner rings 9 internal diameters, is set in expansion bolt 2 and nut 5 in the metal circular tube, described metal circular tube 1 one ends are provided with some shaft orientation opening grooves 7, metal circular tube 1 is stretched out at expansion bolt 2 two ends, and be the expansion-head 4 of taper at the open slot end, the other end be screw thread 3 and with nut 5 thread connection.Expansion bolt 2 is 60 ° at the tapering of open slot end toper.For protection nut 5 and metal circular tube 1, be set with packing ring 6 in the expansion bolt 2 below nut 5.

Claims

1. blind hole bearing drawbench, it is characterized in that it comprises that diameter is slightly less than the metal circular tube [1] of bearing to be pulled out [8] inner ring [9] internal diameter, is set in expansion bolt [2] and nut [5] in the metal circular tube, described metal circular tube [1] one end is provided with some shaft orientation opening grooves, metal circular tube [1] is stretched out at expansion bolt [2] two ends, and be taper at the open slot end, the other end and nut [5] thread connection.

2. bearing drawbench according to claim 1 is characterized in that described expansion bolt [2] is 60 ° at the tapering of open slot end toper.