CN202622670U - High-efficient nut bolt dismounting device - Google Patents
High-efficient nut bolt dismounting device Download PDFInfo
- Publication number
- CN202622670U CN202622670U CN 201220239121 CN201220239121U CN202622670U CN 202622670 U CN202622670 U CN 202622670U CN 201220239121 CN201220239121 CN 201220239121 CN 201220239121 U CN201220239121 U CN 201220239121U CN 202622670 U CN202622670 U CN 202622670U
- Authority
- CN
- China
- Prior art keywords
- output shaft
- barrel
- transmission member
- snap ring
- cylindrical shell
- 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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- Rolling Contact Bearings (AREA)
Abstract
A high-efficient nut bolt dismounting device comprises an output shaft 1, a barrel 2, a transmission member 3 and a snap ring 4, wherein the output shaft 1 is arranged inside the barrel 2, the barrel 2 is internally provided with a positioning hole for installing the transmission member 3 and a snap ring hole for installing the snap ring 4, the transmission member 3 is a needle bearing, an outer circle of the transmission member is installed inside the positioning hole 21 of the barrel 2 and positioned by the snap ring 4, an inner circle of the transmission member is installed on the output shaft 1, and the outer circle of the transmission member 3 is in transitional fit with the barrel 2, and the inner circle of the transmission member 3 is in transitional fit with the output shaft 1. The transmission member 3 is installed between the output shaft 1 and the barrel 2, so that the sliding friction between the output shaft 1 and the barrel 2 is changed to the rolling friction, the friction force between the output shaft and the barrel is greatly reduced, and the mechanical efficiency is improved. Compared with the prior art, the high-efficient nut bolt dismounting device has characteristics of reasonability in design, compactness in structure, high mechanical efficiency, long service life and the like.
Description
Technical field
The utility model relates to a kind of manual maintenance tool, particularly a kind of efficient nut bolt replacer.
Background technology
At present, the structure of the automotive tyre nut replacer on the market is as shown in Figure 1, and it comprises output shaft 1 and cylindrical shell 2, and output shaft 1 is positioned at cylindrical shell 2, and output shaft 1 adopts matched in clearance, sliding friction with cylindrical shell 2.The automotive tyre nut replacer of this structure, coefficient of friction is big when work, and mechanical efficiency is low, and service life is short; And the output torque is big more, and coefficient of friction is bigger, mechanical efficiency is low more, abrasion is faster.
Summary of the invention
The purpose of the utility model is the above-mentioned deficiency that overcomes prior art, and provide a kind of simple in structure, easy to operate, reliability is high, mechanical efficiency is high, the efficient nut bolt replacer of long service life.
The technical scheme of the utility model is: a kind of efficient nut bolt replacer; It comprises output shaft, cylindrical shell, driving member and snap ring; Output shaft is positioned at cylindrical shell; Be useful on locating hole that driving member is installed and the snap ring hole that is used to install snap ring in the cylindrical shell, the driving member outer ring is contained in the locating hole of cylindrical shell and with the snap ring location, and inner ring is contained on the output shaft.
The further technical scheme of the utility model is: driving member is a needle bearing.
The further again technical scheme of the utility model is: be interference fits between driving member outer ring and the cylindrical shell and between driving member inner ring and the output shaft.
The utility model is through installing driving member between output shaft and cylindrical shell, the sliding friction of output shaft and cylindrical shell is transformed into rolling friction, reduces the frictional force of output shaft and cylindrical shell greatly; Improve mechanical efficiency; Compared with prior art, have reasonable in design, compact conformation; Mechanical efficiency is high, characteristics such as long service life.
Further describe below in conjunction with accompanying drawing and the specific embodiment detailed content the utility model.
Description of drawings
Fig. 1 is the structural representation of existing automotive tyre nut replacer;
Fig. 2 is the structural representation of the utility model.
The specific embodiment
As shown in Figure 2, a kind of efficient nut bolt replacer, it comprises output shaft 1, cylindrical shell 2, driving member 3 and snap ring 4; Output shaft 1 is positioned at cylindrical shell 2, is useful on locating hole that driving member 3 is installed and the snap ring hole that is used to install snap ring 4 in the cylindrical shell 2; Driving member 3 is a needle bearing; Its outer ring is contained in the locating hole of cylindrical shell 2 and with snap ring 4 and locatees, and inner ring is contained on the output shaft 1, is interference fits between driving member 3 outer rings and the cylindrical shell 2 and between driving member 3 inner rings and the output shaft 1.
When output shaft 1 output torque, driving member 3 inner rings rotate with output shaft 1, and outer ring and cylindrical shell 2 do not rotate, and the needle roller of driving member 3 becomes rolling friction to the relative motion friction of output shaft 1 and cylindrical shell 2.
Claims (3)
1. efficient nut bolt replacer; It comprises output shaft and cylindrical shell; Output shaft is positioned at cylindrical shell, it is characterized in that also comprising driving member and snap ring, is useful on locating hole that driving member is installed and the snap ring hole that is used to install snap ring in the cylindrical shell; The driving member outer ring is contained in the locating hole of cylindrical shell and with the snap ring location, inner ring is contained on the output shaft.
2. efficient nut bolt replacer according to claim 1 is characterized in that driving member is a needle bearing.
3. efficient nut bolt replacer according to claim 1 and 2 is characterized in that being interference fits between driving member outer ring and the cylindrical shell and between driving member inner ring and the output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239121 CN202622670U (en) | 2012-05-25 | 2012-05-25 | High-efficient nut bolt dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239121 CN202622670U (en) | 2012-05-25 | 2012-05-25 | High-efficient nut bolt dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202622670U true CN202622670U (en) | 2012-12-26 |
Family
ID=47375910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220239121 Expired - Fee Related CN202622670U (en) | 2012-05-25 | 2012-05-25 | High-efficient nut bolt dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202622670U (en) |
-
2012
- 2012-05-25 CN CN 201220239121 patent/CN202622670U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20121226 Termination date: 20180525 |