CN210764039U - Positioning device - Google Patents
Positioning device Download PDFInfo
- Publication number
- CN210764039U CN210764039U CN201921424115.8U CN201921424115U CN210764039U CN 210764039 U CN210764039 U CN 210764039U CN 201921424115 U CN201921424115 U CN 201921424115U CN 210764039 U CN210764039 U CN 210764039U
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- CN
- China
- Prior art keywords
- shaft
- diameter
- shaft sleeve
- main part
- shaft hole
- 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
Links
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a positioning device, which comprises a shaft sleeve and a top shaft; the shaft sleeve is provided with shaft holes which penetrate through the two axial ends of the shaft sleeve, and the aperture of the lower end of the shaft hole is smaller than that of the upper end of the shaft hole; the surface of the shaft sleeve is provided with a telescopic opening communicated with the shaft hole, and the telescopic opening is arranged along the axial direction of the shaft sleeve and penetrates through the two axial ends of the shaft sleeve; the outer surface of one end of the shaft sleeve is provided with a limiting step, and the limiting step is positioned at the upper end of the shaft hole; the apical axis sets up in the shaft hole, and this apical axis is including continuous front end, main part and end, and the main part is the toper structure that the upper end diameter is greater than the lower extreme diameter, and the front end sets up in the upper end department of main part, and the diameter of front end is less than the diameter of main part upper end, and the end sets up in the lower extreme of main part, and terminal diameter is less than the diameter of main part lower extreme. The utility model has the characteristics of can fix a position the hole on mark festival bough and the fishplate bar, and can guarantee not have the clearance between hole and the terminal surface to guarantee the quality of product.
Description
Technical Field
The utility model belongs to the technical field of tower machine part production, concretely relates to positioner.
Background
The main branch of the mark section and the fishplate are important components of the main chord of the tower crane. The mark section main branch and the fishplate need to be welded and assembled, holes in the mark section main branch and the fishplate are positioned through a pin shaft at present to ensure assembly accuracy, but gaps exist between the holes and end faces during positioning, so that the quality of a product cannot meet the requirement, and the product is scrapped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem to above-mentioned defect, provide a positioner, can fix a position the hole on mark festival bough and the fishplate, and can guarantee not have the clearance between hole and the terminal surface to guarantee the quality of product.
The utility model provides a technical scheme that its technical problem adopted as follows:
a positioning device comprises a shaft sleeve and a top shaft; the shaft sleeve is provided with shaft holes which penetrate through the two axial ends of the shaft sleeve, and the aperture of the lower end of the shaft hole is smaller than that of the upper end of the shaft hole; the surface of the shaft sleeve is provided with a telescopic opening communicated with the shaft hole, and the telescopic opening is arranged along the axial direction of the shaft sleeve and penetrates through the two axial ends of the shaft sleeve; the outer surface of one end of the shaft sleeve is provided with a limiting step, and the limiting step is positioned at the upper end of the shaft hole; the apical axis sets up in the shaft hole, and this apical axis is including continuous front end, main part and end, and the main part is the toper structure that the upper end diameter is greater than the lower extreme diameter, and the front end sets up in the upper end department of main part, and the diameter of front end is less than the diameter of main part upper end, and the end sets up in the lower extreme of main part, and terminal diameter is less than the diameter of main part lower extreme.
Further, the diameter of the front end is larger than the diameter of the tail end.
Furthermore, the included angle between the surface of the main body and the axial lead of the top shaft is 1-5 degrees.
Furthermore, the included angle between the hole wall of the shaft hole and the axial lead of the shaft hole is 1-5 degrees.
Further, the upper end and the lower end of the shaft hole are chamfered to form flaring, and the angle of the chamfer is 10-20 degrees.
Furthermore, the surface of the lower end of the shaft sleeve is a conical surface, and the included angle between the conical surface and the shaft axis of the shaft sleeve is 5-12 degrees.
The utility model has the advantages that:
(1) the utility model discloses install the axle sleeve in the downthehole of mark festival boughs and fishplate, then in inserting the jackshaft, because there is flexible mouth on the axle sleeve, and the diameter of the main part of jackshaft is greater than the aperture in shaft hole, so the jackshaft can outwards expand the axle sleeve to mark festival boughs and fishplate location, there is not the clearance in hole and the terminal surface this moment, thereby guaranteed the quality of product.
(2) The utility model discloses the surface of well main part is the same with the contained angle of the axial lead of apical axis and the pore wall in shaft hole and the axial lead's in shaft hole contained angle to be convenient for the apical axis assigns in the shaft hole, and can expand the axle sleeve.
(3) The utility model discloses an equal chamfer of upper end and lower extreme in shaft hole forms the flaring, and the front end and the end of the apical axis of being convenient for pass.
(4) The utility model discloses a surface of axle sleeve lower extreme is the conical surface to install the axle sleeve downthehole at mark festival boughs and fishplate.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural view of the middle shaft sleeve of the present invention;
fig. 2 is a schematic structural view of the middle jacking shaft of the present invention;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a diagram illustrating the usage of the present invention;
wherein: the shaft sleeve comprises a shaft sleeve 1, a shaft hole 11, a flaring 12, a telescopic opening 13, a top shaft 2, a front end 21, a main body 22, a tail end 23, a mark section main branch 3 and a fishplate 4.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
A positioning device as shown in fig. 1 to 4 includes a sleeve 1 and a head shaft 2.
The shaft sleeve 1 is provided with a shaft hole 11, the shaft hole 11 penetrates through two axial ends of the shaft sleeve 1, the hole diameter of the lower end of the shaft hole 11 is smaller than that of the upper end, an included angle α between the hole wall of the shaft hole 11 and the axial lead of the shaft hole 11 is 1-5 degrees, an included angle α is preferably 2 degrees in the embodiment, the upper end and the lower end of the shaft hole 11 are chamfered to form flared holes 12, the angle β of the chamfered is 10-20 degrees, the angle β is preferably 15 degrees in the embodiment, the surface of the lower end of the shaft sleeve is a conical surface, the included angle gamma between the conical surface and the axial lead of the shaft sleeve is 5-12 degrees, the included angle gamma is preferably 10 degrees in the embodiment, a telescopic opening 13 communicated with the shaft hole 11 is formed in the surface of the shaft sleeve 1, the telescopic opening 13 is arranged along the axial direction of the shaft sleeve and.
The top shaft 2 is arranged in the shaft hole 11, the top shaft 2 comprises a front end 21, a main body 22 and a tail end 23 which are connected, the main body is of a conical structure, the diameter of the upper end of the main body is larger than that of the lower end of the main body, an included angle delta between the surface of the main body and the axis of the top shaft is 1-5 degrees, the included angle delta is preferably 2 degrees in the embodiment, the included angle α is the same as the included angle delta, so that the top shaft can be inserted into the shaft hole, the front end is arranged at the upper end of the main body, the diameter of the front end is smaller than that of the upper end of the main body, the tail end is arranged at the lower end of the main body, the diameter of the tail end is smaller than that of the lower end of the main body, the diameter of the front end is larger than that of the tail end, the top shaft is inserted into the shaft hole through the knocking of the front end, the top shaft can.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.
Claims (6)
1. A positioning device, characterized by: comprises a shaft sleeve and a top shaft;
the shaft sleeve is provided with shaft holes which penetrate through the two axial ends of the shaft sleeve, and the aperture of the lower end of the shaft hole is smaller than that of the upper end of the shaft hole; the surface of the shaft sleeve is provided with a telescopic opening communicated with the shaft hole, and the telescopic opening is arranged along the axial direction of the shaft sleeve and penetrates through the two axial ends of the shaft sleeve; the outer surface of one end of the shaft sleeve is provided with a limiting step, and the limiting step is positioned at the upper end of the shaft hole;
the apical axis sets up in the shaft hole, and this apical axis is including continuous front end, main part and end, and the main part is the toper structure that the upper end diameter is greater than the lower extreme diameter, and the front end sets up in the upper end department of main part, and the diameter of front end is less than the diameter of main part upper end, and the end sets up in the lower extreme of main part, and terminal diameter is less than the diameter of main part lower extreme.
2. A positioning device as set forth in claim 1, wherein: the diameter of the front end is larger than the diameter of the tail end.
3. A positioning device as set forth in claim 1, wherein: the surface of the main body and the axial lead of the top shaft form an included angle of 1-5 degrees.
4. A positioning device as set forth in claim 1, wherein: the included angle between the hole wall of the shaft hole and the axial lead of the shaft hole is 1-5 degrees.
5. A positioning device as set forth in claim 1, wherein: the upper end and the lower end of the shaft hole are chamfered to form flaring, and the angle of the chamfer is 10-20 degrees.
6. A positioning device as set forth in claim 1, wherein: the surface of the lower end of the shaft sleeve is a conical surface, and the included angle between the conical surface and the axial lead of the shaft sleeve is 5-12 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424115.8U CN210764039U (en) | 2019-08-29 | 2019-08-29 | Positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424115.8U CN210764039U (en) | 2019-08-29 | 2019-08-29 | Positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210764039U true CN210764039U (en) | 2020-06-16 |
Family
ID=71058055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921424115.8U Expired - Fee Related CN210764039U (en) | 2019-08-29 | 2019-08-29 | Positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210764039U (en) |
-
2019
- 2019-08-29 CN CN201921424115.8U patent/CN210764039U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |