CN2268141Y - Grommet pin-key antitheft bolt - Google Patents
Grommet pin-key antitheft bolt Download PDFInfo
- Publication number
- CN2268141Y CN2268141Y CN 96238984 CN96238984U CN2268141Y CN 2268141 Y CN2268141 Y CN 2268141Y CN 96238984 CN96238984 CN 96238984 CN 96238984 U CN96238984 U CN 96238984U CN 2268141 Y CN2268141 Y CN 2268141Y
- Authority
- CN
- China
- Prior art keywords
- pin
- bolt
- hole
- hexagon
- utility
- 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
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- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The utility model provides a theftproof bolt for blind hole pin keys, which is suitable for connecting steel tower members. The utility model is composed of a bolt with a hexagonal head, two hexagonal nuts, male pins and a cushion ring. The male pins are installed inside an axial blind-hole-shaped male pin holes which is at a screw section of the bolt with the hexagonal head and is adjacent to the screw connection position of the hexagonal nuts of an end part. One end of each male pin is hidden in each hole, and the other end is flush with the outer end surface of each hexagonal nut. The utility model can not be artificially taken out with simple tools and methods. The utility model has the advantages of reasonable structure, high shearing resistance, and reliable theftproof performance.
Description
The utility model relates to a kind of anti-theft bolt, particularly a kind of iron tower blind hole pin key anti-theft bolt, it not only can make, and pin is hidden can not to be removed in blind hole shape pin hole, plays antitheft effect, and when this anti-theft bolt uses on iron tower, can prevent that the accident of falling the tower from taking place.
Existing anti-theft bolt is of a great variety, but all anti-theft bolts are nothing more than by hexagon head bolt, and hexagon nut, pin and packing ring are formed.In these diversified anti-theft bolts, the structure that a kind of anti-theft bolt is arranged is at threaded this end of hexagon head bolt, along axially close cylindrical outer surface, be drilled with a cylindrical pin hole, this pin hole is a through hole, when installing and using, when hexagon nut screws with the hexagon head bolt end face, the pin of packing into, the part screw thread of hexagon nut is cut off, the pin of wedging can not rotate hexagon nut on hexagon head bolt, but when this anti-theft bolt is used for the connection of iron tower rod member, because the length of hexagon head bolt is standard, dress two hexagon nuts thereon, inboard hexagon nut is with packing ring, workpiece locking, Wai Ce antitheft hexagon nut and inboard locking often have certain span between hexagon nut like this, and again because the pin hole between hexagon head bolt and hexagon nut screw thread is a through hole, pin is easily by artificial ejecting from pin hole simultaneously, so the structure of this anti-theft bolt is incomplete, theftproof performance is unreliable.The structure of another kind of anti-theft bolt is near a distance end of hexagon head bolt, be drilled with a radially pin hole, also be drilled with a radially pin hole that diameter is identical on the antitheft hexagon nut, when hexagon nut end face and hexagon head bolt end face align pin hole, pin is packed into wherein, pin and pin hole are interference fit, and hexagon nut is fixed on the hexagon head bolt, but because radially pin hole is that through hole makes the two ends of pin exposed, artificial general simple tool of usefulness and the method for so easy quilt ejects pin from pin hole, hexagon nut is removed, so the structure of this anti-theft bolt is also perfect inadequately, theftproof performance is also unreliable.
The purpose of this utility model is exactly that a kind of blind hole pin key anti-theft bolt that has improved will be provided, it not only can make pin hidden in blind hole shape pin hole, can not be by artificial taking out with simple tool and method, good anti-theft effect, and can prevent because of the stolen accident of falling the tower that takes place of iron tower rod member.
Task of the present utility model is that following mode is finished, this device is by a hexagon head bolt and dress strip pin thereon, two hexagon nuts, also have a patty packing ring to form anti-theft bolt between fastening hexagon nut and hexagon nut is arranged at the threaded end of hexagon head bolt near workpiece and inboard, the end face of antitheft hexagon nut and hexagon head bolt, in their threaded connection place, the rectangular pin that blind hole shape pin hole and Qi Nei are arranged along axial direction, its axis is in the joint of two screw threads, length makes it to constitute blind hole less than the thickness of hexagon nut, pin and blind hole shape pin hole are interference fit, one end of pin is hidden in blind hole shape pin hole, the other end and hexagon nut end face, the hidden pin in blind hole shape pin hole of such end, can not be by artificial usefulness general simple tool and method it is taken out, antitheft hexagon nut just is difficult for unloading from hexagon head bolt, thereby plays antitheft effect.
The utility model only needs to be improved on a kind of former antitheft bolt, change former pin hole into blind hole by through hole, axis is located at the connecting thread place of hexagon head bolt and hexagon nut, promptly realized blind hole pin key anti-theft bolt device, this apparatus structure advantages of simple, manufacturing is easy, mutually the property height, anti-shearing force is big, and theftproof performance is reliable.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.
Fig. 1 is that the utility model the region between the heart and the diaphragm hole pin key anti-theft bolt is installed and used elevation cross-sectional view,
Fig. 2 is that the utility model blind hole pin key anti-theft bolt is installed and used partial side view.
Below in conjunction with Fig. 1, Fig. 2 describes the specific structural details that proposes according to the utility model in detail, this device comprises a hexagon head bolt 1, thread section at hexagon head bolt 1 is a hexagon nut 3 near the place, end, there is strip pin 2 threaded connection place between them in axial blind hole shape pin hole, its axis is at the connecting thread place, between pin 2 and blind hole shape pin hole is interference fit, one end of pin 2 is hidden in blind hole shape pin hole, the end face of the other end and hex head bolt 1 and hexagon nut 3, hexagon nut 4 is with packing ring 5, workpiece 6 and workpiece 7 tighten together, because strip pin 2 is packed in the blind hole shape pin hole, can not be by artificial it being taken out with simple tool and method, so this apparatus structure is reasonable, shearing resistance is big, and theftproof performance is reliable.
Claims (1)
- A kind of by hexagon head bolt 1, strip pin 2, hexagon nut 3, the blind hole pin key anti-theft bolt that hexagon nut 4 and packing ring 5 are formed, it is characterized in that the thread section of hexagon head bolt 1 and near the threaded connection place of 3 of the antitheft hexagon nuts of end, axial blind hole shape pin hole and pin 2 are wherein arranged, and an end of strip pin 2 is hidden in blind hole shape pin hole, the end face of the other end and hexagon nut 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238984 CN2268141Y (en) | 1996-11-05 | 1996-11-05 | Grommet pin-key antitheft bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238984 CN2268141Y (en) | 1996-11-05 | 1996-11-05 | Grommet pin-key antitheft bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2268141Y true CN2268141Y (en) | 1997-11-19 |
Family
ID=33914140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238984 Expired - Fee Related CN2268141Y (en) | 1996-11-05 | 1996-11-05 | Grommet pin-key antitheft bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2268141Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490386A (en) * | 2011-12-15 | 2012-06-13 | 天津天重中直科技工程有限公司 | Process for assembling heat contact rod end part of billet hold-out rod |
-
1996
- 1996-11-05 CN CN 96238984 patent/CN2268141Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490386A (en) * | 2011-12-15 | 2012-06-13 | 天津天重中直科技工程有限公司 | Process for assembling heat contact rod end part of billet hold-out rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |