CN2181590Y - Theft-proof bolt fastening device - Google Patents
Theft-proof bolt fastening device Download PDFInfo
- Publication number
- CN2181590Y CN2181590Y CN 92210969 CN92210969U CN2181590Y CN 2181590 Y CN2181590 Y CN 2181590Y CN 92210969 CN92210969 CN 92210969 CN 92210969 U CN92210969 U CN 92210969U CN 2181590 Y CN2181590 Y CN 2181590Y
- Authority
- CN
- China
- Prior art keywords
- screw bolt
- theft
- expanding
- bolt
- nut
- 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
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to a theft-proof screw bolt fixed locking device. The theft-proof screw bolt fixed locking device is composed of a screw bolt (1), a nut (2), a tight expanding core (4), and a jacket (3). Stepped holes (5) are drilled on the axial center line of the thread end of the screw bolt (1), threads are carved on the thin hole segment of the lower part of the axial center line, and an expanding sleeve (7) which is equally divided is arranged on the thick hole segment of the upper part of the axial center line, and is screwed into the nut (2). The jacket (3) is arranged on the upper part of the expanding sleeve (7), and a round hole is drilled on the center of the bottom part of the expanding sleeve (7). The thread end of the lower part of the tight expanding core (4) is screwed into the inner screw of the screw bolt (1), the expanding sleeve (7) is tightly expanded by the cone-type expanding wedge (8) of the middle part of the tight expanding core (4), the jacket (3) is tightly pressed by a dummy club, and the thread of the screw bolt is destroyed by the cone-type expanding wedge (8) in the expanding sleeve (7), which can efficiently prevent other people from optionally demounting the theft-proof screw bolt fixed locking device. The theft-proof screw bolt fixed locking device has safety, reliability, and convenient use, and can be applicable to the mounting tight locking devices of the equipment of electric power, communication, etc.
Description
The utility model belongs to fastening piece, particularly a kind of anti-theft bolt securing means.
At present, general antitheft securing means all is to adopt special-shaped nut, and nut cooperates the purpose that reaches antitheft with special spanner.As CN2064835U, patents such as CN2045440U, they have a common shortcoming: common wrench can not start, but still can its startup be lost antitheft effect with common box spanner, though and 892077174 patented technologies have prevented that effectively the robber from unloading, but also limited normal repair demolition simultaneously, this all is unfavorable for practical application.
The purpose of this utility model is to overcome above technical deficiency, and a kind of anti-theft bolt securing means is provided.
The utility model is to realize like this; a kind of anti-theft bolt securing means is made up of bolt, nut, swelling core and sheath, screws in locking nut in the outside of bolt, and bolt has the five equilibrium expansion set; compress sheath; the swelling core passes sheath and screws in the bolt, at externally threaded expansion set distending, lock-nut; swelling core end is three terrace with edge shape bodies; must adopt the dismounting of special tool spanner, can prevent other people random demounting bolt, protection equipment proper functioning.
The utility model adopts mechanical locking measure with the supporting use of special tool spanner, realizes easily, and is easy and simple to handle, fastening reliable, prevents that other people from dismantling.
Describe with by way of example below in conjunction with accompanying drawing.
Fig. 1 shows a kind of anti-theft bolt securing means structural drawing.
Fig. 2 shows a kind of anti-theft bolt securing means plan view.
Among the figure, the 1-bolt; The 2-nut; The 3-sheath; 4-swelling core; The 5-shoulder hole; The 6-screw thread; The 7-expansion set; The 8-taper wedge that expands; The 9-boss; 10-three terrace with edge shape bodies
A kind of anti-theft bolt securing means, by bolt (1), nut (2), swelling core (4) and sheath (3) are formed, threaded end shaft axis at bolt (1) is drilled with shoulder hole (5), hole depth is to 2/3 place of bolt shank, gross porosity is to 1/5 place of bolt shank, at bottom pore section line silk, the top coarse pore section is split into five equilibrium expansion set (7), screw in nut (2), sheath (3) is installed on expansion set (7) top, and sheath (3) bottom centre is drilled with circular hole, and swelling core (4) passes circular hole, swelling core (4) lower thread end screws in the internal thread of bolt (1), taper bloated wedge (8) tapering in middle part is 30 °, swelling expansion set (7), and boss (9) compresses sheath (3), swelling core (4) end is three terrace with edge shape bodies (10), and the side is a curved surface.
During use, the bolt (1) after the processing is penetrated, screw in nut (2), go up placement sheath (3) at expansion set (7), swelling core (4) is penetrated sheath (3) circular hole, in the internal thread of lower bolt (1), taper wedge (8) the swelling expansion set (7) that expands, boss (9) compresses sheath (3), swelling core (4) end is three terrace with edge shape bodies, and the side is curved surface, and is fastening by special spanner, during dismounting, opposite with above step.Prevent that other people from arbitrarily dismantling, thus protection equipment proper functioning.
A kind of anti-theft bolt securing means is three terrace with edge shape bodies in swelling core end, settles sheath on expansion set, and the wedge that expands destroys the screw rod lines in expansion set, play antitheft, locking effect, and bolt clamp device can not arbitrarily be dismantled.
A kind of anti-theft bolt securing means, reasonable in design, simple in structure, easy to use, install fastening applicable to equipment such as electric power, communications.
Claims (2)
1, a kind of anti-theft bolt securing means, by bolt (1), nut (2), swelling core (4) and sheath (3) are formed, the threaded end shaft axis that it is characterized in that said bolt (1) is drilled with shoulder hole (5), pore section line silk in the bottom, the top coarse pore section is split into five equilibrium expansion set (7), screw in nut (2), expansion set (7) top is installed sheath (3) bottom centre and is drilled with circular hole, swelling core (4) lower thread end screws in the internal thread of bolt (1), bloated wedge (8) the swelling expansion set (7) of middle part taper, boss compresses sheath (3), and swelling core (4) end is three terrace with edge shape bodies (10);
2, a kind of anti-theft bolt securing means according to claim 1 is characterized in that said swelling core (4) side is a curved surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 92210969 CN2181590Y (en) | 1992-05-21 | 1992-05-21 | Theft-proof bolt fastening device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 92210969 CN2181590Y (en) | 1992-05-21 | 1992-05-21 | Theft-proof bolt fastening device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2181590Y true CN2181590Y (en) | 1994-11-02 |
Family
ID=33763096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 92210969 Expired - Fee Related CN2181590Y (en) | 1992-05-21 | 1992-05-21 | Theft-proof bolt fastening device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2181590Y (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8616815B2 (en) | 2010-08-05 | 2013-12-31 | Rolls-Royce Plc | Fastener |
CN106257067A (en) * | 2015-06-18 | 2016-12-28 | 株式会社日立制作所 | Mobile communication identifies |
CN106988370A (en) * | 2016-01-20 | 2017-07-28 | 卡特彼勒公司 | Pull bar for hydraulic hammer is connected |
CN109139651A (en) * | 2018-09-21 | 2019-01-04 | 国网山东省电力公司龙口市供电公司 | A kind of anti-theft bolt |
CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
-
1992
- 1992-05-21 CN CN 92210969 patent/CN2181590Y/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8616815B2 (en) | 2010-08-05 | 2013-12-31 | Rolls-Royce Plc | Fastener |
CN106257067A (en) * | 2015-06-18 | 2016-12-28 | 株式会社日立制作所 | Mobile communication identifies |
CN106257067B (en) * | 2015-06-18 | 2018-05-11 | 株式会社日立制作所 | Mobile communication identifies |
CN106988370A (en) * | 2016-01-20 | 2017-07-28 | 卡特彼勒公司 | Pull bar for hydraulic hammer is connected |
CN106988370B (en) * | 2016-01-20 | 2022-03-29 | 卡特彼勒公司 | Pull rod connection for hydraulic hammer |
CN109139651A (en) * | 2018-09-21 | 2019-01-04 | 国网山东省电力公司龙口市供电公司 | A kind of anti-theft bolt |
CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
CN109714924B (en) * | 2019-02-21 | 2024-06-04 | 山西全安新技术开发有限公司 | Method and device for fastening explosion-proof electrical equipment cavity |
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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 |