CN203680209U - Blind hole bearing withdrawal tool - Google Patents
Blind hole bearing withdrawal tool Download PDFInfo
- Publication number
- CN203680209U CN203680209U CN201320881965.7U CN201320881965U CN203680209U CN 203680209 U CN203680209 U CN 203680209U CN 201320881965 U CN201320881965 U CN 201320881965U CN 203680209 U CN203680209 U CN 203680209U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- external screw
- blind hole
- nut
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a blind hole bearing withdrawal tool which comprises an external screw rod, an internal screw rod, a sleeve, a nut a and a nut b, wherein the center of the external screw rod is a cavity; the internal screw rod penetrates through the cavity; the sleeve and the nut a sleeve threads of the external screw rod; the screw rod b sleeves threads of the internal screw rod. The blind hole bearing withdrawal tool is characterized in that the head of the external screw rod is horn-shaped; opened elongated slots are uniformly distributed in the side wall of the threads of the external screw rod; the internal cavity of the external screw rod is a through hole; the front end of the cavity is a splay conical face a. After the structure is adopted, a damaged bearing in a blind hole is rapidly disassembled, a box body or a bearing hole is not damaged, and the blind hole bearing withdrawal tool has the advantages of simple structure and convenience in operation.
Description
Technical field
The utility model relates to the extracting tool of bearing, is specifically related to a kind of extracting tool that is applicable to blind hole bearing in casing.
Background technology
Bearing is as working the parts of fixing and reducing load coefficient of friction in mechanical transmission course, in engine or plant equipment, be widely used, normal conditions lower bearing through hole general and mechanical component bearing block assembles, but some special machine member by bearing press mounting in the bearing block of blind hole structure, hole and bearing are all to adopt interference fit, guarantee bearing normal rotation.But pressing bearing is difficulty quite, slightly very will not damage race ring if pressing element is not put well.Also have at operation use procedure middle (center) bearing damagedly, occur the bearing that this situation all must more renew.But to remove the quite difficulty of bearing in blind hole, in prior art, dismantle bearing and generally adopt the instrument dismountings such as hook, hammer, cross rise, due to bearing inner race limited space, the impetus of above-mentioned instrument and the strong point can only act on bearing, therefore can cause in the time taking out bearing because of the damage of undue force to casing or hole, cause whole equipment or parts to be scrapped, bring unnecessary trouble and economic loss.
Utility model content
Technical problem to be solved in the utility model is, overcomes drawback of the prior art, and a kind of blind hole bearing dismounting tool simple in structure, easy to operate is provided, and can, fast by the bearing dismounting damaging in blind hole, not destroy again casing or dead eye.
For solving above-mentioned technical problem, the utility model has been taked following technical scheme:
A kind of extracting tool of blind hole bearing, comprise external screw rod, inner screw, sleeve, nut a and nut b, described external screw rod center is cavity, inner screw penetrates in this cavity, and described sleeve and nut a are socketed on the screw thread of external screw rod, and nut b is socketed on the screw thread of inner screw, the head of described external screw rod is horn-like, on screw flight sidewall, be evenly equipped with opening elongated slot outside, external screw rod internal cavities is through hole, and cavity front end is the taper seat a of " the outer Eight characters " type.
Described inner screw front end head is taper seat b, and suitable with external screw rod internal cavities taper seat a.
The end of thread that described external screw rod is relative with head is processed into flat side.
Described sleeve inner is hollow, and its internal diameter is greater than the external diameter of bearing.
The beneficial effect that the utility model can reach is:
By external screw rod head is processed into horn-like, make the attenuation of external screw rod head edge wall thickness, be convenient to go deep in brearing bore, screwing nut b drives inner screw to move in external screw rod inner chamber, external screw rod head is strutted, make the maximum diameter that head struts be greater than brearing bore diameter, the trumpet-shaped arc surface of external screw rod is close to bearing bottom surface, the axial tension of tightening generation by nut a is by bearing removal, the utility model compared to existing technology, has feature simple in structure, easy to operate, can fast the bearing damaging in blind hole be removed, not destroy again casing or dead eye.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is external screw rod generalized section;
Fig. 3 is that the A of Fig. 2 is to view;
Fig. 4 is that the B of Fig. 2 is to view;
Fig. 5 is the structural representation of inner screw;
Reference numeral
1-external screw rod 2-inner screw 3-sleeve 4-nut a 5-nut b in figure
6-bearing 7-mechanical component 101-external screw rod head 102-through hole
The flat side 104-of 103-external screw rod screw thread 105-opening elongated slot 106-taper seat a
201-taper seat b 202-inner screw screw thread
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
The utility model in the specific implementation, as shown in Figures 1 to 5, an extracting tool for blind hole bearing, comprises external screw rod 1, inner screw 2, sleeve 3, nut a4 and nut b5, and described external screw rod 1 center is cavity, inner screw 2 penetrates in this cavity, described sleeve 3 and nut a4 are socketed on external screw rod screw thread 104, and nut b5 is socketed on inner screw screw thread 202, and described external screw rod head 101 is horn-like, make the 101 edge wall thickness attenuation of external screw rod head, be convenient to go deep in bearing 6 endoporus.On screw flight 104 sidewalls, be evenly equipped with opening elongated slot 105 outside, preferred slotting length is upwards 1/3rd places of external screw rod head 101, and fluting is uniformly distributed along the circumference.External screw rod internal cavities is through hole 102, and cavity front end is the taper seat a106 of " the outer Eight characters " type, and the end of thread that described external screw rod is relative with head 101 is processed into flat side 103, thereby is convenient to spanner clamping fastening nut a4.
Described inner screw front end head is taper seat b201, and suitable with external screw rod internal cavities taper seat a106, and inner screw 2 rod ends adopt part screw thread, and coordinate with nut b5.
Described sleeve inner is hollow, and its internal diameter is greater than the external diameter of bearing.
The course of work of the present utility model is as follows:
1, sleeve 3 and nut a4 are socketed on external screw rod 1, inner screw 2 is put into external screw rod through hole 102
In, and nut b5 is socketed on inner screw 2.
2, external screw rod 1 put into the endoporus of bearing 6 and passed endoporus.
3, fastening nut b5, inner screw 2 pushes external screw rod head 106, makes the maximum diameter that head struts be greater than brearing bore diameter, and external screw rod head 101 arc surfaces are close to bearing bottom surface.
4, with spanner, nut a4 is tightened, nut a4 compression sleeve 3, produces reverse axial tension to external screw rod 1, and bearing 6 is extracted from the dead eye of mechanical component 7.
Adopt after this structure, can fast the bearing damaging in blind hole be removed, do not destroy again casing or dead eye, there is advantage simple in structure, easy to operate.
Claims (4)
1. the extracting tool of a blind hole bearing, comprise external screw rod, inner screw, sleeve, nut a and nut b, described external screw rod center is cavity, inner screw penetrates in this cavity, and described sleeve and nut a are socketed on the screw thread of external screw rod, and nut b is socketed on the screw thread of inner screw, it is characterized in that: the head of described external screw rod is horn-like, on screw flight sidewall, be evenly equipped with opening elongated slot outside, external screw rod internal cavities is through hole, and cavity front end is the taper seat a of " the outer Eight characters " type.
2. the extracting tool of a kind of blind hole bearing according to claim 1, is characterized in that: described inner screw front end head is taper seat b, and suitable with external screw rod internal cavities taper seat a.
3. the extracting tool of a kind of blind hole bearing according to claim 1, is characterized in that: the end of thread that described external screw rod is relative with head is processed into flat side.
4. the extracting tool of a kind of blind hole bearing according to claim 1, is characterized in that: described sleeve inner is hollow, and its internal diameter is greater than the external diameter of bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881965.7U CN203680209U (en) | 2013-12-30 | 2013-12-30 | Blind hole bearing withdrawal tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881965.7U CN203680209U (en) | 2013-12-30 | 2013-12-30 | Blind hole bearing withdrawal tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203680209U true CN203680209U (en) | 2014-07-02 |
Family
ID=51002168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320881965.7U Expired - Fee Related CN203680209U (en) | 2013-12-30 | 2013-12-30 | Blind hole bearing withdrawal tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203680209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115723094A (en) * | 2022-11-08 | 2023-03-03 | 恒业智能驱动(杭州)股份有限公司 | Blind hole part bearing withdrawing tool and method |
-
2013
- 2013-12-30 CN CN201320881965.7U patent/CN203680209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115723094A (en) * | 2022-11-08 | 2023-03-03 | 恒业智能驱动(杭州)股份有限公司 | Blind hole part bearing withdrawing tool and method |
| CN115723094B (en) * | 2022-11-08 | 2023-08-04 | 恒业智能驱动(杭州)股份有限公司 | Tool and method for withdrawing bearing from blind hole part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151109 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: 400054 Huaxi Industrial Park, Banan District, Chongqing Road, No. 1 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20161230 |