CN201110303Y - Manhole cover anti-theft bolt as well as matched special purpose tools - Google Patents
Manhole cover anti-theft bolt as well as matched special purpose tools Download PDFInfo
- Publication number
- CN201110303Y CN201110303Y CNU2007200824308U CN200720082430U CN201110303Y CN 201110303 Y CN201110303 Y CN 201110303Y CN U2007200824308 U CNU2007200824308 U CN U2007200824308U CN 200720082430 U CN200720082430 U CN 200720082430U CN 201110303 Y CN201110303 Y CN 201110303Y
- Authority
- CN
- China
- Prior art keywords
- bolts
- burglarproof
- manhole cover
- special tools
- matching special
- 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
- 238000005728 strengthening Methods 0.000 abstract 2
- 238000007689 inspection Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The aims of the utility model is to improve the existing manhole covers, the manhole covers are easy to be stolen by thieves, which brings many dangers to goers and vehicles passing by and is not safe, after using a burglarproof bolt strengthening manhole cover, the dangers can be avoided, the burglarproof bolt strengthening manhole cover is characterized in that manhole cover burglarproof bolts and matching special tools are supplied, the function of fastening and loosing bolts is realized by utilizing bolts which are shaped like a Chinese character 'zhong' and by moving the prominent diameter of the middle portion from left to right in a 'T' shape groove, and the burglarproof bolts and the matching special tools are realized by the following modes: common bolts are replaced by the burglarproof bolts and the matching special tools, wherein the burglarproof bolts which are shaped like a Chinese character 'zhong', the middle portion can be forced from left to right in the 'T' shape groove, if the matching special tools are not supplied, the manhole covers can not be opened, thereby, the burglarproof function is realized, as the picture shows, the matching special tool is a sleeve type, a pair of wrenches which are opposite to each other are arranged at certain distance before the big end of a sleeve diameter, the burglarproof bolts and the matching special tools are used together, which not only can fasten the bolts, but also can loose the bolts.
Description
Technical field:
The utility model relates to a kind of inspection shaft lid, and especially a kind of anti-theft bolt inspection shaft lid that is equipped with reaches supporting special tool.
Background technique:
Existing inspection shaft covers because no anti-theft device is easily stolen the inspection shaft lid by the thief, and works the mischief for the walking along the street people or the vehicle of passing by on one's way, and therefore is necessary to improve.
The model utility content:
The utility model purpose, provide a kind of manhole cover anti-theft bolt and special-purpose assorted instrument, be to realize in the following manner, outstanding in the middle of the manhole cover anti-theft bolt, font in the one-tenth, the upper end is a sleeve column, the lower end is a clamping bolt, the centre is the major diameter part of giving prominence to, and utilizes the interior left and right sides of T font groove that the middle part is axial and diameter forms stressed, can play antitheft effect.
Special tool is the queen post special spanner, for telescopic, makes things convenient for the practitioner to open with this instrument.
The utility model technical solution technological scheme that problem adopts, anti-theft bolt is to be made of lower end clamping bolt, major diameter middle part and upper end sleeve column, three parts are tight connections, middle part diameter and upper end sleeve column diameter proportion are 2: 1, utilize the interior left and right sides of T font groove that the middle part is axial and diameter forms stressed, there is a T font groove middle overhang top.
Supporting special tool is telescopic, at the big end of sleeve diameter the place ahead certain distance, a pair of spanner that faces toward is mutually arranged, and as shown in the figure, utilizes corresponding matching between spanner and the T-slot, and the left and right sides is stressed, plays fastening and effect loose bolts.
The beneficial effects of the utility model provide a kind of manhole cover anti-theft bolt and supporting special tool, avoid the thief to steal the inspection shaft lid, and it is safer with vehicle driving that people are walked.
Description of drawings:
Fig. 1 is a manhole cover anti-theft bolt in the example 1, and Fig. 2 is that inspection shaft covers supporting special tool in the example 1, and 1 is the lower end bolt among the figure, 2 are meant the major diameter that the middle part is outstanding, and 3 are meant T-slot, the 4th, and the upper end sleeve column, certain distance is mutually facing to spanner before the 5 special tool sleeves, the big end of 6 special tools.
Embodiment:
As shown in the figure, manhole cover anti-theft bolt and supporting special tool in the present embodiment, having the lower end is clamping bolt, intermediate portion is the major diameter of giving prominence to, the upper end is the sleeve column of bolt, it is characterized in that whole bolt is middle font, mid diameter is 2: 1 with being connected upper and lower sleeve column diameter ratio, and the intermediate portion diameter is in the T font groove.
Special tool is the queen post special spanner, for telescopic, at the big end of sleeve diameter front certain distance, have a pair of mutually facing to spanner, it is characterized in that: but utilize the corresponding matching left and right sides between spanner and the T-slot stressed, play fastening and effect loose bolts, as shown in the figure.
Claims (2)
1, a kind of manhole cover anti-theft bolt and supporting special tool is characterized in that anti-theft bolt integral body is middle font, and middle part diameter and upper end sleeve column diameter proportion are 2: 1, and three partly is tight connection.
2, according to claim 1, manhole cover anti-theft bolt and supporting special tool, its feature special tool is telescopic, at the big end of sleeve diameter the place ahead certain distance, has a pair of mutually facing to spanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200824308U CN201110303Y (en) | 2007-12-13 | 2007-12-13 | Manhole cover anti-theft bolt as well as matched special purpose tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200824308U CN201110303Y (en) | 2007-12-13 | 2007-12-13 | Manhole cover anti-theft bolt as well as matched special purpose tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110303Y true CN201110303Y (en) | 2008-09-03 |
Family
ID=39894833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200824308U Expired - Fee Related CN201110303Y (en) | 2007-12-13 | 2007-12-13 | Manhole cover anti-theft bolt as well as matched special purpose tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110303Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671454A (en) * | 2013-11-30 | 2014-03-26 | 国网河南省电力公司平顶山供电公司 | Anti-electric-larceny screw and application method of tightening device used with same |
-
2007
- 2007-12-13 CN CNU2007200824308U patent/CN201110303Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671454A (en) * | 2013-11-30 | 2014-03-26 | 国网河南省电力公司平顶山供电公司 | Anti-electric-larceny screw and application method of tightening device used with same |
| CN103671454B (en) * | 2013-11-30 | 2015-10-14 | 国家电网公司 | The using method of anti-electricity-theft screw and supporting device for screwing up thereof |
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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: 20080903 Termination date: 20101213 |