CN203856860U - Anti-detaching protective device for bolt - Google Patents
Anti-detaching protective device for bolt Download PDFInfo
- Publication number
- CN203856860U CN203856860U CN201420285332.4U CN201420285332U CN203856860U CN 203856860 U CN203856860 U CN 203856860U CN 201420285332 U CN201420285332 U CN 201420285332U CN 203856860 U CN203856860 U CN 203856860U
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- China
- Prior art keywords
- hole
- nut
- annular protrusion
- holes
- detaching
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- 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 discloses an anti-detaching protective device for a bolt. The anti-detaching protective device comprises a protective tube, a cover plate and a nut. A limit ring is arranged on the inner surface of the protective tube, and the nut is located within the range which is formed by the limit ring in a defined mode. An annular protrusion is arranged at the rear end of the nut, and the outer diameter of the annular protrusion is larger than the inner diameter of the limit ring. The cover plate makes contact with the rear end of the protective tube. A lap joint part is arranged on the cover plate and extends into the protective tube. Blind holes are formed in the lap joint part, through holes are formed in the protective tube, and the through holes and the blind holes are coaxial and identical in radial size. The anti-detaching protective device further comprises magnets arranged inside the lap joint part and located below the bottoms of the blind holes. The anti-detaching protective device further comprises positioning strips, the partial positioning strips are located in the blind holes, and the partial positioning strips are located in the through holes. The length of the positioning strips is smaller than the total length of the blind holes and the through holes. The plane, opposite to the limit ring, of the annular protrusion is evenly provided with multiple spherical holes, and the device further comprises balls arranged in the spherical holes. The balls protrude out of the plane, opposite to the limit ring, of the annular protrusion. Detaching is difficult without special tools, and therefore the anti-theft effect is good.
Description
Technical field
The utility model relates to bolt connection piece field, relates in particular to a kind of protective gear that prevents that bolt from arbitrarily being dismantled.
Background technique
In mechanical whorl bindiny mechanism, bindiny mechanism can dismantle with conventional instrument at present.And when the important equipment of some high price is installed out of doors, the security risk that adopts conventional machinery to be threaded is larger, equipment is easily stolen.Storage battery, the copper cable etc. such as in electric power system, used, owing to adopting conventional machinery to be threaded, the loss causing because being stolen is every year huge.
Existing bolt connecting mechanism mainly comprises the bolt of through-connections, and with bolted nut, as long as dismounting nut, bolt can be taken off, cannot play anti-theft function.
The application for a patent for invention that publication number is " 103671453A " discloses a kind of " bolt connection anti-detachment mechanism ", and it adopts a sleeve to protect nut, prevents that nut is removed.But this anti-detachment mechanism adopts jaw to drive nonstandard nut and sleeve to rotate simultaneously, to mount and dismount, is difficult to nonstandard nut to contrast with bolt while not only installation, inconvenience is installed, and its anti-theft effect is also not as people's will.Thief only need to be bent into a U-shaped body with tinsel, can insert in the groove on nonstandard nut by the hole on cover plate, realizes the dismounting of this anti-detachment mechanism.
In addition; thief also can use clamp to clamp protection sleeve, protection sleeve is pulled back to the baffle ring making on protection sleeve and be close to the projection on nut, then rotational sleeve; as long as the strength pulling back is enough large, just can utilize frictional force between baffle ring and projection that nut is backed out.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of bolt detaching-proof protection device that is difficult to dismounting on the basis without special tool is provided.
The purpose of this utility model is achieved through the following technical solutions:
Bolt detaching-proof protection device, comprises protection cylinder, cover plate and nut; The internal surface of protection cylinder is provided with limited ring, and nut is positioned at the scope that limited ring is encircled into, and the rear end of nut is provided with annular protrusion, and the external diameter of annular protrusion is greater than the internal diameter of limited ring; Cover plate and the rear end in contact of protecting cylinder, be provided with on cover plate and extend to the inner clinch of protection cylinder, offers blind hole on clinch, protects on cylinder and offer through hole coaxial with blind hole and that radial dimension is identical; Also comprise the magnet being arranged in clinch, magnet is positioned at below, blind hole bottom; Also comprise that part is arranged in blind hole, part is arranged in the positioning strip of through hole, and the length of positioning strip is less than the total length of blind hole and through hole; Annular protrusion, with respect to evenly offering multiple spherical pores in the plane of limited ring, also comprises the ball being arranged in spherical pore, and ball protrudes from the plane of annular protrusion with respect to limited ring.
Owing to adopting and removably connecting between cover plate and protection cylinder, when mounted, first will protect jacket casing on bolt; then nut is arranged on bolt; subsequently cover plate is placed in to the rear end of protection cylinder, finally from through hole, inserts positioning strip, positioning strip links into an integrated entity cover plate and protection cylinder.The problem that the utility model does not exist nut to be difficult to aim at bolt when mounted, easy for installation.
Limited ring can not be drawn out of with making protection cylinder coordinating of annular protrusion, thereby cannot operate the nut of fixing bolt, plays anti-theft effect.Protection cylinder is not directly connected with nut, even if protection cylinder is subject to torsion, protection cylinder also only can rotate around nut, and the power on protection cylinder can not be passed to nut.
In addition, positioning strip in blind hole and through hole, is not had special tool to be difficult to positioning strip to be extracted out by magnet adsorption, possesses good theftproof performance.
If use clamp to clamp protection cylinder, protection cylinder is pulled back, then rotate protection cylinder, now, due to the existence of ball, the torsion on protection cylinder cannot be passed to nut completely, thereby avoids nut to be removed.
Further, the side opening of described positioning strip is provided with hook hole.
Further, described blind hole and described through hole are square opening; The cross section of described positioning strip is square.
Further, on described protection cylinder, also offer the semicircle orifice being communicated with a side of described through hole; Described hook hole is positioned at described through hole.
In sum, advantage of the present utility model and beneficial effect are:
1. the utility model is easy for installation, does not exist nut to be difficult to aim at the problem of bolt;
2. positioning strip, by magnet adsorption in blind hole and through hole, in the situation that lacking special tool, is difficult to positioning strip to be extracted out good anti-theft effect;
3. ball is set, thereby cannot allows nut rotation by increasing frictional force between annular protrusion and limited ring, further improved theftproof performance.
Brief description of the drawings
In order to be illustrated more clearly in embodiment of the present utility model, will be briefly described describing the required accompanying drawing of using in the utility model embodiment below.Apparent, the accompanying drawing in the following describes is only some embodiments that record in the utility model, to those skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation A of the present utility model;
Fig. 2 is structural representation B of the present utility model;
Fig. 3 is that the B of Fig. 2 is to enlarged view;
Fig. 4 is the structural representation of extracting tool;
Fig. 5 is that the A-A of Fig. 4 is to sectional view;
Fig. 6 is dismounting schematic diagram of the present utility model;
Fig. 7 is the C place enlarged view of Fig. 2;
Wherein, the component title that reference character is corresponding is as follows:
1-protects cylinder, 2-cover plate, 3-nut, 4-magnet; 5-positioning strip, 6-removal rod, 7-spring eye, 8-spring; 9-hook blocks, 10-bolt, 11-fastener, 12-nut; 13-ball, 101-limited ring, 102-through hole; 103-semicircle orifice, 201-clinch, 202-blind hole; 301-annular protrusion, 302-spherical pore, 501-hook hole.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is carried out to clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, instead of all.The embodiment who records based on the utility model, other all embodiments that those skilled in the art obtain in the situation that not paying creative work, all in the scope of the utility model protection.
Embodiment 1:
As shown in Figure 1, Figure 2 and Figure 7, bolt detaching-proof protection device, comprises protection cylinder 1, cover plate 2 and nut 3; The internal surface of protection cylinder 1 is provided with limited ring 101, and nut 3 is positioned at the scope that limited ring 101 is encircled into, and the rear end of nut 3 is provided with annular protrusion 301, and the external diameter of annular protrusion 301 is greater than the internal diameter of limited ring 101; The rear end in contact of cover plate 2 and protection cylinder 1, is provided with the clinch 201 that extends to protection cylinder 1 inside on cover plate 2, offer blind hole 202 on clinch 201, protects on cylinder 1 and offers through hole 102 coaxial with blind hole 202 and that radial dimension is identical; Also comprise the magnet 4 being arranged in clinch 201, magnet 4 is positioned at blind hole 202 belows, bottom; Also comprise that part is arranged in blind hole 202, part is arranged in the positioning strip 5 of through hole 102, and the length of positioning strip 5 is less than the total length of blind hole 202 and through hole 102; Annular protrusion 301 is with respect to evenly offering multiple spherical pores 302, also comprise the ball 13 being arranged in spherical pore 302 in the plane of limited ring 101, ball 13 protrudes from the plane of annular protrusion 301 with respect to limited ring 101.
This bolt protecting device is applicable to following situation:
Bolt 10 runs through fastener 11, and nut 12 is connected with bolt 10, is pulling down after nut 12, bolt 10 can be taken off.
Owing to adopting and removably connecting between cover plate 2 and protection cylinder 1; when mounted; first protection cylinder 1 is enclosed within on bolt 10; then nut 3 is arranged on bolt 10; subsequently cover plate 2 is placed in to the rear end of protection cylinder 1; finally from through hole 102, insert positioning strip 5, positioning strip 5 links into an integrated entity cover plate 2 and protection cylinder 1.The problem that this protective gear does not exist nut 3 to be difficult to aim at bolt 10 when mounted, easy for installation.
Limited ring 101 can not be drawn out of with making protection cylinder 1 coordinating of annular protrusion 301, thereby cannot operate the nut of fixing bolt 10 12, plays anti-theft effect.Protection cylinder 1 is not directly connected with nut 3, even if protection cylinder 1 is subject to torsion, protection cylinder 1 also only can rotate around nut 3, and the power on protection cylinder 1 can not be passed to nut 3.
In addition, positioning strip 5 is adsorbed in blind hole 202 and through hole 102 by magnet 4, does not have special tool to be difficult to positioning strip 5 to be extracted out, possesses good theftproof performance.
If use clamp to clamp protection cylinder 1, protection cylinder 1 is pulled back, then rotate protection cylinder 1, now, due to the existence of ball 13, ball 13 rotates, and the torsion on protection cylinder 1 cannot be passed to nut 3 completely, thereby avoids nut 3 to be removed.
Embodiment 2:
As shown in Figure 3, Figure 5 and Figure 6, the present embodiment is on embodiment 1 basis, and the side opening of described positioning strip 5 is provided with hook hole 501.Described blind hole 202 and described through hole 102 are square opening; The cross section of described positioning strip 5 is square.On described protection cylinder 1, also offer the semicircle orifice 103 being communicated with a side of described through hole 102; Described hook hole 501 is positioned at described through hole 102.
Extracting tool as shown in Figure 4, comprises removal rod 6, offers spring eye 7 on removal rod 6, and hook blocks 9 is fixed in spring eye 7 by spring 8, and at spring 8, under relaxed state, hook blocks 9 parts are positioned at outside spring eye 7.The cross section of removal rod 6 is semicircle.
In the time that this protection mechanism is dismantled; removal rod 6 inserts in semicircle orifice 103; inclined-plane in hook blocks 9 contacts and makes in hook blocks 9 retraction spring eyes 7 with protection cylinder 1; move in hook blocks 9 behind the position of hook hole 501; hook blocks 9 ejects to hook hole 501 in the effect of spring 8, then upwards carries and positioning strip 5 can be extracted out.
After all positioning strips 5 are extracted out, cover plate 2 can be pulled down, nut 3 exposes, and dismounting nut 3 is extracted out after protection cylinder 1, completes the dismounting of this protection mechanism.
Need special mechanism owing to will extracting positioning strip 5 out, this mechanism cannot simply manufacture or obtain, and therefore makes this protective gear possess good theftproof performance.
In sum, can realize preferably the utility model.
Claims (4)
1. bolt detaching-proof protection device, is characterized in that:
Comprise protection cylinder (1), cover plate (2) and nut (3);
The internal surface of protection cylinder (1) is provided with limited ring (101), nut (3) is positioned at the scope that limited ring (101) is encircled into, the rear end of nut (3) is provided with annular protrusion (301), and the external diameter of annular protrusion (301) is greater than the internal diameter of limited ring (101);
Cover plate (2) and the rear end in contact of protecting cylinder (1), on cover plate (2), be provided with and extend to the inner clinch (201) of protection cylinder (1), on clinch (201), offer blind hole (202), on protection cylinder (1), offer and through hole that radial dimension identical (102) coaxial with blind hole (202);
Also comprise the magnet (4) being arranged in clinch (201), magnet (4) is positioned at below, blind hole (202) bottom;
Also comprise that part is arranged in blind hole (202), part is arranged in the positioning strip (5) of through hole (102), and the length of positioning strip (5) is less than the total length of blind hole (202) and through hole (102);
Annular protrusion (301) is with respect to evenly offering multiple spherical pores (302) in the plane of limited ring (101), also comprise the ball (13) being arranged in spherical pore (302), ball (13) protrudes from the plane of annular protrusion (301) with respect to limited ring (101).
2. bolt detaching-proof protection device according to claim 1, is characterized in that:
The side opening of described positioning strip (5) is provided with hook hole (501).
3. bolt detaching-proof protection device according to claim 2, is characterized in that:
Described blind hole (202) and described through hole (102) are square opening;
The cross section of described positioning strip (5) is square.
4. bolt detaching-proof protection device according to claim 3, is characterized in that:
On described protection cylinder (1), also offer the semicircle orifice (103) being communicated with a side of described through hole (102);
Described hook hole (501) is positioned at described through hole (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420285332.4U CN203856860U (en) | 2014-05-30 | 2014-05-30 | Anti-detaching protective device for bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420285332.4U CN203856860U (en) | 2014-05-30 | 2014-05-30 | Anti-detaching protective device for bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856860U true CN203856860U (en) | 2014-10-01 |
Family
ID=51606712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420285332.4U Expired - Fee Related CN203856860U (en) | 2014-05-30 | 2014-05-30 | Anti-detaching protective device for bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856860U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358764A (en) * | 2014-10-08 | 2015-02-18 | 佛山市浪鲸洁具有限公司 | Structure for mounting cover through magnetic attraction |
| CN106049966A (en) * | 2016-08-18 | 2016-10-26 | 国家电网公司 | Antitheft device for stay wires |
| CN106640916A (en) * | 2016-11-14 | 2017-05-10 | 无锡市乾泰金属构件厂 | High-safety bolt |
| CN109882493A (en) * | 2019-04-17 | 2019-06-14 | 广东电网有限责任公司 | A kind of nut screw anti-theft protective device |
| CN111271582A (en) * | 2020-03-17 | 2020-06-12 | 北京康拓红外技术股份有限公司 | Self-locking magnetic fastening device |
| CN111794713A (en) * | 2020-07-09 | 2020-10-20 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794715A (en) * | 2020-07-09 | 2020-10-20 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
-
2014
- 2014-05-30 CN CN201420285332.4U patent/CN203856860U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358764A (en) * | 2014-10-08 | 2015-02-18 | 佛山市浪鲸洁具有限公司 | Structure for mounting cover through magnetic attraction |
| CN106049966A (en) * | 2016-08-18 | 2016-10-26 | 国家电网公司 | Antitheft device for stay wires |
| CN106640916A (en) * | 2016-11-14 | 2017-05-10 | 无锡市乾泰金属构件厂 | High-safety bolt |
| CN109882493A (en) * | 2019-04-17 | 2019-06-14 | 广东电网有限责任公司 | A kind of nut screw anti-theft protective device |
| CN109882493B (en) * | 2019-04-17 | 2024-04-30 | 广东电网有限责任公司 | Nut screw anti-theft protection device |
| CN111271582A (en) * | 2020-03-17 | 2020-06-12 | 北京康拓红外技术股份有限公司 | Self-locking magnetic fastening device |
| CN111794713A (en) * | 2020-07-09 | 2020-10-20 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794715A (en) * | 2020-07-09 | 2020-10-20 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794713B (en) * | 2020-07-09 | 2022-06-24 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
| CN111794715B (en) * | 2020-07-09 | 2022-06-24 | 三亚乾泰石油机械技术有限公司 | Lever anti-theft device is pressed to beam-pumping unit |
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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 |
Granted publication date: 20141001 Termination date: 20200530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |