CN205244088U - Fluid pressure type anti -drop bolt - Google Patents
Fluid pressure type anti -drop bolt Download PDFInfo
- Publication number
- CN205244088U CN205244088U CN201521026339.5U CN201521026339U CN205244088U CN 205244088 U CN205244088 U CN 205244088U CN 201521026339 U CN201521026339 U CN 201521026339U CN 205244088 U CN205244088 U CN 205244088U
- Authority
- CN
- China
- Prior art keywords
- bolt
- bolt head
- shank
- head
- pressure type
- 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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Abstract
The utility model provides a fluid pressure type anti -drop bolt, includes shank of bolt, bolt head, lug and fluid valve, its characterized in that, the shank of bolt divide into screw thread district that is located the lower part and the no screw thread that is located upper portion and distinguishes, the top in no screw thread district is the ring structure in the shank of bolt, the ring structure's edge is equipped with the multiunit recess, the top cover in no screw thread district put in in the bolt head, the inner wall of bolt head is equipped with multiunit lug, multiunit the lug is placed in the multiunit in the recess, be equipped with on the side of bolt head the fluid valve. The utility model discloses a hydraulic technique for bolt and formed reaction force between the fastener, the effectual emergence that prevents the bolt obscission, in addition, the device and comparatively even by the surperficial atress between the fastener contact can not make and received the damage by the surface of fastener.
Description
Technical field
The utility model relates to hydraulic technique field, is specially a kind of fluid pressure type anti-drop bolt.
Background technology
At present, the field of screw thread application has a lot, for some large-scale machinery, required bolt must be slip-off preventing, and the bolt of common slip-off preventing is to add bolting pad between bolt and fastener, by the reaction force of bolting pad, prevent bolt falling, but because the active force of bolting pad comparatively converges, can make the surface of fastener sustain damage.
Summary of the invention
The purpose of this utility model is to provide a kind of fluid pressure type anti-drop bolt, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of fluid pressure type anti-drop bolt, comprise shank of bolt, bolt head, projection and fluid valve, it is characterized in that, described shank of bolt is divided into and is positioned at the threaded area of bottom and superposed without threaded area, in described shank of bolt, be circular ring structure without the top of threaded area, the edge of described circular ring structure is provided with many group grooves, the described top without threaded area cover is put in described bolt head, the inwall of described bolt head is provided with many group projections, the described projection of many groups is positioned in the described groove of many groups, the side of described bolt head is provided with described fluid valve.
Preferably, described bolt head is hex bolts head.
Preferably, between described shank of bolt and described bolt head, be provided with seal.
Compared with prior art, the beneficial effects of the utility model are: the utility model passes through hydraulic technique, make to form reaction force between bolt and fastener, effectively prevent the generation of bolt falling phenomenon, in addition, surface between this device and fastener contact is stressed comparatively even, can not make the surface of fastener sustain damage.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model in A-A direction.
1. shanks of bolt in figure, 2. bolt head, 3. projection, 4. fluid valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-2, a kind of embodiment that the utility model provides: a kind of fluid pressure type anti-drop bolt, comprise shank of bolt 1, bolt head 2, projection 3 and fluid valve 4, it is characterized in that, described shank of bolt 1 is divided into and is positioned at the threaded area of bottom and superposed without threaded area, in described shank of bolt 1, be circular ring structure without the top of threaded area, the edge of described circular ring structure is provided with many group grooves, the described top without threaded area cover is put in described bolt head 2, the inwall of described bolt head 2 is provided with many group projections 3, the described projection 3 of many groups is positioned in the described groove of many groups, the side of described bolt head 2 is provided with described fluid valve 4.
Described bolt head 2 is hex bolts head; Between described shank of bolt 1 and described bolt head 2, be provided with seal.
Concrete occupation mode: in the utility model work, first by spanner clamping bolt head 2, shank of bolt 1 is tightened in the screwed hole in fastener, recycling oil cylinder injects quantitative fluid by fluid valve 4 to bolt head 2 inside, at this moment, fluid can make to form reaction force between shank of bolt 1 and fastener, prevents that its absent-mindedness from coming off.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form. Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the utility model. Any Reference numeral in claim should be considered as limiting related claim.
Claims (3)
1. a fluid pressure type anti-drop bolt, comprise shank of bolt (1), bolt head (2), projection (3) and fluid valve (4), it is characterized in that, described shank of bolt (1) is divided into and is positioned at the threaded area of bottom and superposed without threaded area, in described shank of bolt (1), be circular ring structure without the top of threaded area, the edge of described circular ring structure is provided with many group grooves, the described top without threaded area cover is put in described bolt head (2), the inwall of described bolt head (2) is provided with many group projections (3), the described projection of many groups (3) is positioned in the described groove of many groups, the side of described bolt head (2) is provided with described fluid valve (4).
2. a kind of fluid pressure type anti-drop bolt according to claim 1, is characterized in that: described bolt head (2) is hex bolts head.
3. a kind of fluid pressure type anti-drop bolt according to claim 1, is characterized in that: between described shank of bolt (1) and described bolt head (2), be provided with seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521026339.5U CN205244088U (en) | 2015-12-13 | 2015-12-13 | Fluid pressure type anti -drop bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521026339.5U CN205244088U (en) | 2015-12-13 | 2015-12-13 | Fluid pressure type anti -drop bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205244088U true CN205244088U (en) | 2016-05-18 |
Family
ID=55943173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521026339.5U Expired - Fee Related CN205244088U (en) | 2015-12-13 | 2015-12-13 | Fluid pressure type anti -drop bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205244088U (en) |
-
2015
- 2015-12-13 CN CN201521026339.5U patent/CN205244088U/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: 20160518 Termination date: 20161213 |