CN202867510U - Dismantling prevention bolt - Google Patents
Dismantling prevention bolt Download PDFInfo
- Publication number
- CN202867510U CN202867510U CN2012205407237U CN201220540723U CN202867510U CN 202867510 U CN202867510 U CN 202867510U CN 2012205407237 U CN2012205407237 U CN 2012205407237U CN 201220540723 U CN201220540723 U CN 201220540723U CN 202867510 U CN202867510 U CN 202867510U
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- locking cap
- wheel
- star
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Abstract
The utility model discloses a dismantling prevention bolt. The dismantling prevention bolt comprises a bolt body. The bolt body is provided with a head portion and a rod portion. An axial first end of the head portion is fixedly connected with the rod portion. A friction type directional clutch device is arranged on the end portion of an axial second end of the head portion, drives the head portion to screw up and rotate when the friction type directional clutch device rotates along the forward direction, and enables the head portion not to rotate when the friction type directional clutch device rotates along the reverse direction. The dismantling prevention bolt has the advantages that the bolt body can be screwed up through rotation of the friction type directional clutch device along the forward direction so that a valve body and the bolt body can be connected in a locking mode, when lawbreakers rotate the friction type directional clutch device along the reverse direction, the bolt body can not be driven to rotate so that the bolt body can not be dismantled, the functions of dismantling prevention and theft prevention can be achieved, the problem that proper use functions of fire hydrants are lost due to the fact that the lawbreakers steal components of the fire hydrants can be solved, and hidden danger of city fire safety can be avoided.
Description
Technical field
The utility model relates to a kind of fastening piece of fire hydrant, relates in particular to the bolt that locking is connected between a kind of key for fire hydrant and the valve body.
Background technique
Post fire hydrant belongs to the common equipment in city, and the water intaking that it is used for when breaking out of fire or other urgency generally is installed in the road dual-side.Existing post fire hydrant, its structure generally comprises key and valve body, and this valve body is located at the below of this key, and valve body is paid by screw thread with key and connected locking.Because post fire hydrant is guarded without the professional, make some lawless persons not only steal some part, even usually will get off for the Bolt dismantling that locking between valve body and the key is connected usefulness, and then steal the ground integral part of fire hydrant, make post fire hydrant lose due use function, stay safely hidden danger for City fireproof.
The model utility content
The purpose of this utility model provides a kind of non-removable, can prevent the dismounting-proof bolt that the component of fire hydrant are stolen.
The technical solution of the utility model is such: a kind of dismounting-proof bolt, comprise bolt body, this bolt body has head and bar section, the axial first end of this head is fixedly connected with this bar section, axial second end of above-mentioned head can drive above-mentioned head when having its forward rotation and tighten rotation, the directed engaging and disengaging gear of the friction type that above-mentioned head can not rotate during backward rotation.
The directed engaging and disengaging gear of above-mentioned friction type comprises star-wheel, ball, Compress Spring and locking cap, above-mentioned star-wheel fixedly lies against on the axial second end end face of above-mentioned head, above-mentioned locking cap is sheathed on outside the above-mentioned star-wheel, has the cap body that is covered on the above-mentioned star-wheel on the above-mentioned locking cap, and above-mentioned head is arranged with outward limits the retaining ring that is fixed on the above-mentioned head, above-mentioned locking cap is fixedly connected with above-mentioned retaining ring, above-mentioned star-wheel has several along the equally distributed wedge slot in circumferencial direction interval of above-mentioned star-wheel, the madial wall of above-mentioned wedge slot and above-mentioned locking cap forms a wedge shape chamber, indoor above-mentioned ball and the above-mentioned Compress Spring of being equipped with of each above-mentioned wedge cavities, above-mentioned ball is positioned in the narrow slot part of above-mentioned wedge shape chamber, and above-mentioned ball and above-mentioned star-wheel and above-mentioned locking cap close contact, above-mentioned Compress Spring accumbency is installed in the sipes part of above-mentioned wedge shape chamber, and an end of above-mentioned Compress Spring is stretched in the narrow slot part of above-mentioned wedge shape chamber and is fixedly connected with above-mentioned ball.
Above-mentioned locking cap is the hexagonal locking cap.
The end that is concaved with for above-mentioned Compress Spring in the sipes part of above-mentioned wedge slot embeds the mounting groove of installing.
Convex with the boss in the axle center hole that stretches into above-mentioned star-wheel on the axial second end end face of above-mentioned head, above-mentioned boss and above-mentioned head link together by plug welding.
Above-mentioned star-wheel and above-mentioned head are one-body molded.
The axial first end outer side wall of above-mentioned head is concaved with the annular cavity for above-mentioned Fixing shrink ring dress, above-mentioned Fixing shrink ring is loaded in the above-mentioned annular cavity, and above-mentioned retaining ring stretches out to be provided with and stretches out the outer extension part to above-mentioned locking cap of above-mentioned annular cavity, and above-mentioned locking cap and above-mentioned extension part are fixed together by spot welding.
Above-mentioned wedge slot is provided with three.
After adopting technique scheme, a kind of dismounting-proof bolt of the present utility model, because axial second end of head upper end is provided with and can drives head when having its forward rotation and tighten rotation, the directed engaging and disengaging gear of the friction type that above-mentioned head can not rotate during backward rotation, after bolt body is located on valve body and the key like this, forward rotation by the directed engaging and disengaging gear of friction type can make bolt body tighten, realization is connected with the locking locking of key valve body, can't drive bolt body when the directed engaging and disengaging gear of lawless person's backward rotation friction type rotates, bolt body can't be removed, play tamper, antitheft effect, avoid the lawless person to lose due use function because the component of stealing fire hydrant cause fire hydrant, stayed safely the problem of hidden danger for City fireproof.
Description of drawings
Fig. 1 is partial cutaway diagram of the present utility model;
Fig. 2 is head cut-away view of the present utility model;
Fig. 3 is the cut-away view after the utility model is rotated counterclockwise.
Among the figure:
Bolt body 1 head 11
Boss 111 annular cavities 112
Wedge slot 211 mounting groove 211a
Ball 22 Compress Springs 23
Locking cap 24 cap bodies 241
Retaining ring 25
Embodiment
A kind of dismounting-proof bolt of the present utility model, as Figure 1-3, comprise bolt body 1, this bolt body 1 has head 11 and bar section 12, this head 11 is fixedly connected with the end, upper end of this bar section 12, this bar section 12 is processed with the screw thread that satisfies usage requirement, and the upper end of this head 11 is provided with and can drives head 11 when having its forward rotation and tighten rotation, the directed engaging and disengaging gear of the friction type that head 11 can not rotate during backward rotation.
The directed engaging and disengaging gear of described friction type comprises star-wheel 21, ball 22, Compress Spring 23 and locking cap 24, this star-wheel 21 fixedly lies against on the upper end end face of head 12, and convex with the boss 111 in the axle center hole that stretches into star-wheel 21 on the upper end end face of head 11, this boss 111 links together by the arc welding plug welding with head 11, this locking cap 24 is sheathed on outside the star-wheel 21, this locking cap 24 is the hexagonal locking cap, has the cap body 241 that is covered on the star-wheel 21 on this locking cap 24, and head 11 outer being arranged with are limit the retaining ring 25 that is fixed on the head 11, the lower end outer side wall of 11 heads is concaved with the annular cavity 112 for retaining ring 25 suits, retaining ring 25 is set in the annular cavity 112, and retaining ring 25 stretches out to be provided with and stretches out annular cavity 112 outer extension parts to locking cap 24, this extension part is fixed together by spot welding mode and locking cap 24, by this retaining ring 25 locking cap 24 can't be removed; This star-wheel 21 has 3 equally distributed wedge slots 211 in the circumferencial direction interval along star-wheel 21, the narrow slot part of this wedge slot 211 is in clockwise direction one side of sipes part, wedge slot 211 forms a wedge shape chamber with the madial wall of locking cap 24, indoor ball 22 and the Compress Spring 23 of being equipped with of each wedge cavities, ball 22 is positioned in the narrow slot part of wedge shape chamber, and ball 22 and star-wheel 21 and locking cap 24 close contacts, Compress Spring 23 accumbency are installed in the sipes part of wedge shape chamber, and the first end that is concaved with voltage supply contracting spring 21 in the sipes of wedge slot 211 part embeds the mounting groove 211a that installs, the first end of Compress Spring 23 is flush-mounted in this mounting groove 211a, and an end of Compress Spring 23 is stretched in the narrow slot part of wedge slot 211 and is fixedly connected with ball 22.
A kind of dismounting-proof bolt of the present utility model, because ball 22 and star-wheel 21 and locking cap 24 close contacts, and be in the narrow slot part of wedge slot 211, like this, if when clockwise rotating locking cap 24 by spanner, drive ball 22 with frictional force and roll to narrow slot part, further the clamping between wedging ball 22 and star-wheel 21 and the locking cap 24, rotate together thereby drive star-wheel 21 and head 11, bolt body 1 is in tight condition; Otherwise, when locking cap 24 turning anticlockwise, drive then that ball 22 overcomes the spring force of Compress Spring 23 and the sipes of rolling wedge shape chamber is partly located, ball 22 is separated with the madial wall of locking cap 24, locking cap 24 continued to be rotated counterclockwise and also can't drive ball 22 again and slide this moment, make locking cap 24 be in idling conditions, thereby bolt body 1 is not unscrewed, locking cap 24 is fixedly connected with retaining ring 25 spot welding simultaneously, the cap body 241 of locking cap 24 coats ball 22 and Compress Spring 23 get up, thereby bolt body 1 can't be disassembled, play tamper, anti-theft function, avoid the lawless person to lose due use function because the component of stealing fire hydrant cause fire hydrant, stayed safely the problem of hidden danger for City fireproof.
In the utility model, star-wheel 21 also can be one-body molded with head 11, i.e. directly die forging or stamp out the star-wheel shape identical with the structure of star-wheel 21 on the end face of the upper end of head 11.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (8)
1. dismounting-proof bolt, comprise bolt body, this bolt body has head and bar section, the axial first end of this head is fixedly connected with this bar section, it is characterized in that: the axial second end end of above-mentioned head drives above-mentioned head when having its forward rotation and tightens rotation, the directed engaging and disengaging gear of the friction type that above-mentioned head can not rotate during backward rotation.
2. a kind of dismounting-proof bolt according to claim 1, it is characterized in that: the directed engaging and disengaging gear of above-mentioned friction type comprises star-wheel, ball, Compress Spring and locking cap, above-mentioned star-wheel fixedly lies against on the axial second end end face of above-mentioned head, above-mentioned locking cap is sheathed on outside the above-mentioned star-wheel, has the cap body that is covered on the above-mentioned star-wheel on the above-mentioned locking cap, and above-mentioned head is arranged with outward limits the retaining ring that is fixed on the above-mentioned head, above-mentioned locking cap is fixedly connected with above-mentioned retaining ring, above-mentioned star-wheel has several along the equally distributed wedge slot in circumferencial direction interval of above-mentioned star-wheel, the madial wall of above-mentioned wedge slot and above-mentioned locking cap forms a wedge shape chamber, indoor above-mentioned ball and the above-mentioned Compress Spring of being equipped with of each above-mentioned wedge cavities, above-mentioned ball is positioned in the narrow slot part of above-mentioned wedge shape chamber, and above-mentioned ball and above-mentioned star-wheel and above-mentioned locking cap close contact, above-mentioned Compress Spring accumbency is installed in the sipes part of above-mentioned wedge shape chamber, and an end of above-mentioned Compress Spring is stretched in the narrow slot part of above-mentioned wedge shape chamber and is fixedly connected with above-mentioned ball.
3. a kind of dismounting-proof bolt according to claim 2, it is characterized in that: above-mentioned locking cap is the hexagonal locking cap.
4. a kind of dismounting-proof bolt according to claim 2 is characterized in that: be concaved with the mounting groove that embeds installation for the end of above-mentioned Compress Spring in the sipes part of above-mentioned wedge slot.
5. a kind of dismounting-proof bolt according to claim 2 is characterized in that: convex with the boss in the axle center hole that stretches into above-mentioned star-wheel on the axial second end end face of above-mentioned head, above-mentioned boss and above-mentioned head link together by plug welding.
6. a kind of dismounting-proof bolt according to claim 2, it is characterized in that: above-mentioned star-wheel and above-mentioned head are one-body molded.
7. a kind of dismounting-proof bolt according to claim 2, it is characterized in that: the axial first end outer side wall of above-mentioned head is concaved with the annular cavity for above-mentioned Fixing shrink ring dress, above-mentioned Fixing shrink ring is loaded in the above-mentioned annular cavity, and above-mentioned retaining ring stretches out to be provided with and stretches out the outer extension part to above-mentioned locking cap of above-mentioned annular cavity, and above-mentioned locking cap and above-mentioned extension part are fixed together by spot welding.
8. a kind of dismounting-proof bolt according to claim 2, it is characterized in that: above-mentioned wedge slot is provided with three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205407237U CN202867510U (en) | 2012-10-19 | 2012-10-19 | Dismantling prevention bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205407237U CN202867510U (en) | 2012-10-19 | 2012-10-19 | Dismantling prevention bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867510U true CN202867510U (en) | 2013-04-10 |
Family
ID=48034232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205407237U Expired - Fee Related CN202867510U (en) | 2012-10-19 | 2012-10-19 | Dismantling prevention bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867510U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677620A (en) * | 2015-11-10 | 2017-05-17 | 上海圣享科技股份有限公司 | Locking device and operating method thereof |
| CN109026972A (en) * | 2018-08-22 | 2018-12-18 | 平湖巨龙紧固件有限公司 | A kind of tamper nut |
| CN109505852A (en) * | 2018-12-29 | 2019-03-22 | 上海高强度螺栓厂有限公司 | It is a kind of to apply stubborn transfer limiter for hexagon-headed bolt |
-
2012
- 2012-10-19 CN CN2012205407237U patent/CN202867510U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677620A (en) * | 2015-11-10 | 2017-05-17 | 上海圣享科技股份有限公司 | Locking device and operating method thereof |
| CN106677620B (en) * | 2015-11-10 | 2020-05-19 | 上海圣享科技股份有限公司 | Locking device and method for operating the same |
| CN109026972A (en) * | 2018-08-22 | 2018-12-18 | 平湖巨龙紧固件有限公司 | A kind of tamper nut |
| CN109505852A (en) * | 2018-12-29 | 2019-03-22 | 上海高强度螺栓厂有限公司 | It is a kind of to apply stubborn transfer limiter for hexagon-headed bolt |
| CN109505852B (en) * | 2018-12-29 | 2024-02-09 | 上海高强度螺栓厂有限公司 | Heel rotation limiter for screwing hexagon head bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160812 Address after: 362300 Quanzhou City, Fujian Province, the success of science and Technology Industrial Zone, Nanan Patentee after: FUJIAN TIANGUANG FIRE FIGHTING Co.,Ltd. Address before: 362300 Quanzhou City, Fujian Province, the success of science and Technology Industrial Zone, Nanan Patentee before: TIANGUANG FIRE-FIGHTING INCORPORATED CO. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20211019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |