CN201133367Y - Axle sleeve locking apparatus - Google Patents
Axle sleeve locking apparatus Download PDFInfo
- Publication number
- CN201133367Y CN201133367Y CNU2007201991558U CN200720199155U CN201133367Y CN 201133367 Y CN201133367 Y CN 201133367Y CN U2007201991558 U CNU2007201991558 U CN U2007201991558U CN 200720199155 U CN200720199155 U CN 200720199155U CN 201133367 Y CN201133367 Y CN 201133367Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- nut
- sleeve nut
- pump shaft
- shaft
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a locking apparatus for a shaft sleeve, which is composed of a pump shaft and a pump sleeve; wherein, the shaft sleeve is directly sleeved with the external periphery of the pump shaft; the pump shaft is provided with a first sleeve nut and a second sleeve nut by a screw thread; one end face of the first sleeve nut is abutted against one end face of the shaft sleeve, and the other end face of the first sleeve nut is abutted against one end face of the second sleeve nut. After the first sleeve nut and the shaft sleeve are screwed down, the second screw nut and the first sleeve nut are screwed down; consequently, a pressing force can be produced on the contact surface of the first sleeve nut and the second sleeve, and an outward pressing force can be produced between the two sleeve nuts and the ridges of the pump shaft; the tighter of the second sleeve nut, the larger pressing force on the ridges, and the friction force produced by the pressing force can be larger, thus playing a role of loose proof. The locking apparatus for the shaft sleeve has the advantages of simple structure as well as convenient installation and maintenance.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to pump, particularly a kind of pump shaft cover locking device.
Background technique:
For guaranteeing that pine cover phenomenon does not appear in pump axle sleeve when reversing, and need lock pump shaft and connecting of axle sleeve.In the prior art, the locking technology between axle sleeve and the pump shaft is to adopt single nut to add only lock pin nail, not loose cover when guaranteeing the pump counter-rotating.But, in the practical work process, end the lock pin nail and come off easily, thereby cause that axle sleeve is loosening, influence the pump group and normally move.
Summary of the invention:
The purpose of this utility model provides a kind of axle sleeve locking device, and described this axle sleeve locking device will solve the technical problem that the lock pin nail comes off easily of ending of locking axle sleeve in the prior art.
This axle sleeve locking device of the present utility model is made of pump shaft and axle sleeve, described axle sleeve is socketed on the excircle of pump shaft, wherein, described pump shaft is provided with screw thread, be provided with one first sleeve nut and one second sleeve nut by described screw thread on the pump shaft, an end face of described first sleeve nut and an end surfaces of axle sleeve, an end surfaces of another end face of first sleeve nut and described second sleeve nut.
Further, at the bottom of the thread groove of the approximal surface of first sleeve nut and second sleeve nut through screw thread on the pump shaft.
Working principle of the present utility model is: after first sleeve nut and axle sleeve are tightened, again second sleeve nut and first sleeve nut are tightened, produce impacting force on the surface of contact of first sleeve nut and second sleeve nut, make and produce outside impacting force on two sleeve nuts and the pump shaft between the worm tooth, second sleeve nut is twisted tightly more, impacting force on the worm tooth is big more, and the frictional force that impacting force produced is just big more, plays locking effect.
The utility model and prior art contrast, and its effect is actively with tangible.The utility model is used for the locking device of pump shaft cover with double nut, makes by the impacting force between two nuts to produce frictional force between the worm tooth between nut and the pump shaft, reaches locking effect, and is simple in structure, and it is convenient that maintenance is installed.
Description of drawings:
Fig. 1 is the structural representation of axle sleeve locking device of the present utility model.
Embodiment:
As shown in Figure 1, axle sleeve locking device of the present utility model is made of pump shaft 1 and axle sleeve 2, described axle sleeve 2 sockets are arranged on the described pump shaft 1, wherein, on described pump shaft 1, be positioned at described axle sleeve 2 one ends and be provided with first sleeve nut 3 and second sleeve nut 4, described first sleeve nut 3 and described second sleeve nut 4 are same nut edge two parts perpendicular to the axial direction cutting, and described nut segmentation lines is between described first sleeve nut 3 and described second sleeve nut 4.
Further, described segmentation lines is positioned on the worm tooth of described nut, and it lays respectively on described first sleeve nut 3 and second sleeve nut 4 just in time with a worm tooth separated into two parts of nut.
During use, tighten first sleeve nut 3 earlier, screw in second sleeve nut 4 again, when screwing second sleeve nut 4, on the surface of contact of first sleeve nut 3 and second sleeve nut 4, produce impacting force F, make and produce outside impacting force on two sleeve nuts 3,4 and the pump shaft 1 between the worm tooth, second sleeve nut 4 is twisted tightly more, impacting force on the worm tooth is big more, and the frictional force that this impacting force produced is just big more, plays locking effect.
Claims (2)
1. axle sleeve locking device, constitute by pump shaft and axle sleeve, described axle sleeve is socketed on the excircle of pump shaft, it is characterized in that: described pump shaft is provided with screw thread, be provided with one first sleeve nut and one second sleeve nut by described screw thread on the pump shaft, an end face of described first sleeve nut and an end surfaces of axle sleeve, an end surfaces of another end face of first sleeve nut and described second sleeve nut.
2. axle sleeve locking device as claimed in claim 1 is characterized in that: at the bottom of the thread groove of the approximal surface of first sleeve nut and second sleeve nut through screw thread on the pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201991558U CN201133367Y (en) | 2007-12-12 | 2007-12-12 | Axle sleeve locking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201991558U CN201133367Y (en) | 2007-12-12 | 2007-12-12 | Axle sleeve locking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133367Y true CN201133367Y (en) | 2008-10-15 |
Family
ID=40061640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201991558U Expired - Fee Related CN201133367Y (en) | 2007-12-12 | 2007-12-12 | Axle sleeve locking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133367Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI678475B (en) * | 2018-11-30 | 2019-12-01 | 國立勤益科技大學 | Fastening device and manufacturing method of fastening device |
-
2007
- 2007-12-12 CN CNU2007201991558U patent/CN201133367Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI678475B (en) * | 2018-11-30 | 2019-12-01 | 國立勤益科技大學 | Fastening device and manufacturing method of fastening device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20100112 |