CN212079908U

CN212079908U - Multiple anti-theft bolt

Info

Publication number: CN212079908U
Application number: CN202020488516.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Jiangsu Huajie Stainless Steel Product Co ltd
Current assignee: Jiangsu Huajie Stainless Steel Product Co ltd
Priority date: 2020-04-05
Filing date: 2020-04-05
Publication date: 2020-12-04
Anticipated expiration: 2030-04-05

Abstract

The utility model discloses a multiple anti-theft bolt, which comprises a screw rod and a nut, wherein one side of the screw rod is connected with the nut in a threaded way, the central position of the other end of the screw rod is welded with a rotating shaft, the end of the rotating shaft is provided with a limit gear which is arranged inside a hexagonal shell, the hexagonal shell is welded at the middle part of one side of a bottom plate, the bottom plate is welded inside a groove arranged at the side surface of the hexagonal shell and is provided with a locking piece, the utility model utilizes the tight contact between the upper plane of the limiting gear and the radial surface of the limit gear when the limiting block rotates clockwise to lock the bottom plate and the screw rod, the bottom plate drives the screw rod, the inclined plane of stopper one side and the tooth's socket contact of stop gear, do not transmit power between the two, be free rotation state between bottom plate and the screw rod, lawless persons can't twist out the screw rod, play the effect of theftproof.

Description

Multiple anti-theft bolt

Technical Field

The utility model relates to a fastener technical field specifically is a multiple theftproof bolt.

Background

Bolts are a common type of connector and fastener. The nut of the traditional bolt is usually in an outer hexagonal or inner hexagonal structure, and the structure can be flexibly screwed by a universal wrench tool, so that the bolt is convenient to detach or install. However, due to the easy screwing of the conventional bolt, a lawless person can use a very common tool to dismount the bolt, so that important structural members or some expensive and safety equipment, such as power equipment, railway equipment and the like, are stolen, and huge economic loss and potential safety hazards are generated. Therefore, the utility model provides a multiple theftproof bolt is used for solving above-mentioned problem.

Disclosure of Invention

An object of the utility model is to provide a multiple theftproof bolt to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multiple theftproof bolt, includes screw rod and nut, one side threaded connection nut of screw rod, the other end central point of screw rod puts the welding and has the pivot, limit gear is installed to the end of pivot, limit gear installs the inside at the hexagon shell, the middle part in bottom plate one side is welded to the hexagon shell, the bottom plate welding is in hexagon shell side, and the recess internally mounted that hexagon shell side was seted up has a locking piece, the neck bush has been cup jointed to the outside of nut, the inside at the oversheath is installed to the neck bush, the central point at hexagon shell top puts the welding and has the double-screw bolt, the screw that double-screw bolt threaded connection protecting cover bottom surface central point put and set up, the bottom plate has the vertical scroll in one side welding of perpendicular to.

Preferably, the central positions of one ends of the inner bush and the outer sheath are provided with through holes for screws to pass through, the nuts are hexagonal, and the inner section of the inner bush is hexagonal and matched with the nuts.

Preferably, the locking piece includes mounting groove, locking piece and shell fragment, the outside in the bottom plate side is seted up to the mounting groove, the inner wall of connecting the mounting groove is rotated through the pivot to locking piece one end, the shell fragment is installed to the one side that the mounting groove bottom deviates from the locking piece and connects the inner wall, the bottom of shell fragment contacts with the bottom of locking piece.

Preferably, the protecting cover includes top cap, recess and jack, the recess is seted up in one side of top cap bottom surface, the inside at the top cap is seted up to the jack, the outside of jack upper end intercommunication top cap, the bottom intercommunication recess of jack, the jack is on a parallel with the axis of top cap, the position of recess and the position phase-match of locking piece in the bottom plate, the top cap is the hemisphere form.

Preferably, the center position welding of hexagon shell inner wall has inserted a section of thick bamboo, insert a section of thick bamboo inside and insert the reference column, the vertical welding of reference column is put at the central point of stop gear lateral surface.

Preferably, a locking screw is installed inside a screw hole formed in the middle of the bottom end of the screw, strip-shaped holes are formed in the positions, corresponding to the two ends of the locking screw, of the outer sheath respectively, and the two ends of the locking screw are located inside the strip-shaped holes.

Preferably, a through hole for the rotating shaft to pass through is formed in the center of the bottom plate, the limiting block is meshed with the limiting gear, and the bevel of the gear groove of the limiting gear is arranged in the anticlockwise direction.

Compared with the prior art, the beneficial effects of the utility model are that:

1. when the limiting block rotates clockwise, the upper plane of the limiting block is in close contact with the radial surface of the limiting gear to lock the bottom plate and the screw rod, the bottom plate drives the screw rod to rotate clockwise and is screwed gradually, when the bottom plate rotates anticlockwise, the inclined surface on one side of the limiting block is in contact with the tooth groove of the limiting gear, force is not transmitted between the inclined surface and the tooth groove of the limiting gear, the bottom plate and the screw rod are in a free rotation state, and a lawbreaker cannot screw out the screw rod, so that the anti-theft effect;

2. the upper part of the locking block is pushed by the elastic sheet to protrude out of the surface of the top plate, and the protecting cover is embedded into the groove at the bottom of the locking block when being completely screwed, so that the protecting cover is prevented from being detached by lawless persons, and an anti-theft effect is achieved;

3. the locking screw is arranged in the screw hole at the bottom end of the screw from the strip-shaped hole at one side of the outer sheath, while the other end extends into the strip-shaped hole at the other side of the outer sheath, the outer sheath is locked outside the inner bushing and the nut, the nut is protected, and the anti-theft effect is achieved;

4. the semi-spherical top cover is difficult to disassemble due to the fact that stress points are absent outside the semi-spherical top cover, and the top end of the top cover protecting screw rod is provided with a head portion formed by a bottom plate and a hexagonal shell, so that an anti-theft effect is achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the internal structure of the hexagonal housing of the present invention;

fig. 3 is a schematic structural view of the locking member of the present invention.

In the figure: the locking device comprises a screw rod 1, a bottom plate 2, a hexagonal shell 3, a rotating shaft 4, a limiting gear 5, a positioning column 6, a stud 7, an outer protective cover 8, a locking piece 9, an inserting tube 10, a nut 11, an inner bushing 12, an outer sheath 13, a locking screw rod 14, a strip-shaped hole 15, a vertical shaft 16, a limiting block 17, a top cover 81, a groove 82, a jack 83, a mounting groove 91, a locking piece 92 and an elastic piece 93.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a multiple anti-theft bolt comprises a screw rod 1 and a nut 11, wherein one side of the screw rod 1 is in threaded connection with the nut 11, a rotating shaft 4 is welded at the central position of the other end of the screw rod 1, a limit gear 5 is installed at the tail end of the rotating shaft 4, the limit gear 5 is installed inside a hexagonal shell 3, the hexagonal shell 3 is welded at the middle part of one side of a bottom plate 2, the bottom plate 2 is welded at the side surface of the hexagonal shell 3, a locking piece 9 is installed inside a groove formed in the side surface of the hexagonal shell 3, an inner bushing 12 is sleeved outside the nut 11 and installed inside an outer sheath 13, a stud 7 is welded at the central position of the top of the hexagonal shell 3, the stud 7 is in threaded connection with a screw hole formed in the central position of the bottom surface of a protective cover 8, a vertical shaft 16 is welded at one side perpendicular, stopper 17 is its upper portion plane and limit gear 5's radial face in close contact with and is died the lock between bottom plate 2 and the screw rod 1 when clockwise turning, and bottom plate 2 drives screw rod 1 clockwise turning and screws up gradually, and when bottom plate 2 anticlockwise turning, the inclined plane of stopper 17 one side and limit gear 5's tooth's socket contact, and the power is not transmitted between the two, is free rotation state between bottom plate 2 and the screw rod 1, and lawless persons can't twist out screw rod 1.

Furthermore, the central positions of one ends of the inner bush 12 and the outer sheath 13 are provided with through holes for the screw rods 1 to pass through, the nuts 11 are hexagonal, the inner cross section of the inner bush 12 is hexagonal matched with the nuts 11, the inner bush 12 fills the space between the rest of the nuts 11 and the outer sheath 13, so that lawless persons are prevented from detaching the nuts 11 by using a self-made special tool, and an anti-theft effect is achieved.

Further, locking piece 9 includes mounting groove 91, locking piece 92 and shell fragment 93, the outside in bottom plate 2 side is seted up to mounting groove 91, the inner wall of connecting mounting groove 91 is rotated through the pivot to locking piece 92 one end, shell fragment 93 is installed to the one side that mounting groove 91 bottom deviates from locking piece 92 and connects the inner wall, the bottom of shell fragment 93 contacts with the bottom of locking piece 92, shell fragment 93 pushes up the upper portion outstanding in roof 2 surface of locking piece 92, inside embedding the recess 82 of its bottom when protecting cover 8 screws up completely, prevent that protecting cover 8 from being lifted off by lawless persons, play the theftproof effect.

Further, the protecting cover 8 comprises a top cover 81, a groove 82 and a jack 83, the groove 82 is formed in one side of the bottom surface of the top cover 81, the jack 83 is formed in the top cover 81, the upper end of the jack 83 is communicated with the outside of the top cover 81, the bottom end of the jack 83 is communicated with the groove 82, the jack 83 is parallel to the axis of the top cover 81, the position of the groove 82 is matched with the position of the locking block 92 in the bottom plate 2, the top cover 81 is hemispheroid, the outer part of the top cover 81 which is hemispheroid lacks stress points and is difficult to detach, the top end of the top cover 81 is provided with a head part formed by the bottom plate 2 and the hexagonal shell 3.

Furthermore, the center position of the inner wall of the hexagonal shell 3 is welded with an inserting cylinder 10, a positioning column 6 is inserted into the inserting cylinder 10, the positioning column 6 is vertically welded at the center position of the outer side surface of the limit gear 5, and the positioning column 6 is inserted into the inserting cylinder 10 to stabilize the position of the limit gear 5, so that the limit gear 5 can stably and smoothly rotate.

Furthermore, a locking screw 14 is installed inside a screw hole formed in the middle of the bottom end of the screw rod 1, the outer sheath 13 is provided with strip-shaped holes 15 corresponding to the positions of the two ends of the locking screw 14, the two ends of the locking screw 14 are located inside the strip-shaped holes 15, the locking screw 14 is installed into the screw hole in the bottom end of the screw rod 1 through the strip-shaped hole 15 on one side of the outer sheath 13, the other end of the locking screw extends into the strip-shaped hole 15 on the other side of the outer sheath 13, the outer sheath 13 is locked outside the inner bushing 12 and the nut 11, the nut 11 is.

Further, the central position of the bottom plate 2 is provided with a through hole for the rotating shaft 4 to pass through, the limiting block 17 is meshed with the limiting gear 5, the tooth groove bevel of the limiting gear 5 is arranged in the anticlockwise direction, and the limiting block 17 is convenient to smoothly lock the limiting gear 5.

The working principle is as follows: in actual work, the screw 1 is plugged into a hole to be fixed, then the outer sheath 13 and the inner bushing 12 are sleeved on the outer part at the bottom end, the nut 11 is screwed, then the locking screw 14 is installed into a screw hole at the bottom end of the screw 1 from a strip-shaped hole 15 at one side of the outer sheath 13, the other end extends into a strip-shaped hole 15 at the other side of the outer sheath 13, the outer sheath 13 is locked outside the inner bushing 12 and the nut 11, a hexagonal wrench is used for clockwise rotating the hexagonal shell 3 after installation, the hexagonal shell 3 drives the bottom plate 2 to rotate, the upper plane of the limiting block 17 is tightly contacted with the radial surface of the limiting gear 5 when clockwise rotating, so as to lock the bottom plate 2 and the screw 1, the bottom plate 2 drives the screw 1 to clockwise rotate and gradually tighten, when the bottom plate 2 rotates anticlockwise, the inclined surface at one side of the limiting block 17 is contacted with the tooth socket of the limiting gear, the two do not transmit power, aim at 8 bottom screws of protecting cover with the screw of double-screw bolt 7 and screw up after the fastening is accomplished, shell fragment 93 pushes away the upper portion of locking piece 92 and stands out in the surface of roof 2, imbed inside the recess 82 of its bottom when the protecting cover 8 is screwed up completely, prevent that the protecting cover 8 from being lifted off by lawless persons, use special tool to insert the jack 82 inside when the staff dismantles the protecting cover 8 and press into the locking piece 92 inside the mounting groove 91 and make the locking piece 92 break away from recess 82, rotate the top cap 81 with the trend again and lift it off.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The multiple anti-theft bolt comprises a screw rod (1) and a nut (11), and is characterized in that the nut (11) is connected with one side of the screw rod (1) in a threaded manner, a rotating shaft (4) is welded at the center of the other end of the screw rod (1), a limiting gear (5) is installed at the tail end of the rotating shaft (4), the limiting gear (5) is installed inside a hexagonal shell (3), the hexagonal shell (3) is welded at the middle part of one side of a bottom plate (2), the bottom plate (2) is welded at the side surface of the hexagonal shell (3), a locking piece (9) is installed inside a groove formed in the side surface of the hexagonal shell (3), a lining (12) is sleeved outside the nut (11), the lining (12) is installed inside an outer sheath (13), a stud (7) is welded at the center of the top of the hexagonal shell (3), the screw hole that stud (7) threaded connection protecting cover (8) bottom surface central point put and set up, bottom plate (2) have vertical scroll (16) in the welding of one side perpendicular to limit gear (5), the externally mounted of vertical scroll (16) has stopper (17).

2. A multiple anti-theft bolt according to claim 1, wherein: the central positions of one ends of the inner bush (12) and the outer sheath (13) are provided with through holes for the screw rods (1) to pass through, the nuts (11) are hexagonal, and the inner section of the inner bush (12) is hexagonal and matched with the nuts (11).

3. A multiple anti-theft bolt according to claim 1, wherein: locking piece (9) are including mounting groove (91), locking piece (92) and shell fragment (93), set up in the outside of bottom plate (2) side in mounting groove (91), the inner wall of connecting mounting groove (91) is rotated through the pivot to locking piece (92) one end, shell fragment (93) are installed to one side that mounting groove (91) bottom deviates from locking piece (92) and connects the inner wall, the bottom of shell fragment (93) contacts with the bottom of locking piece (92).

4. A multiple anti-theft bolt according to claim 1, wherein: protecting cover (8) include top cap (81), recess (82) and jack (83), one side at top cap (81) bottom surface is seted up in recess (82), the inside at top cap (81) is seted up in jack (83), the outside of jack (83) upper end intercommunication top cap (81), the bottom intercommunication recess (82) of jack (83), jack (83) are on a parallel with the axis of top cap (81), the position of recess (82) and the position phase-match of locking piece (92) in bottom plate (2), top cap (81) are the hemisphere form.

5. A multiple anti-theft bolt according to claim 1, wherein: the welding is put at the center of hexagon shell (3) inner wall and is inserted a section of thick bamboo (10), insert a section of thick bamboo (10) inside and insert reference column (6), the vertical welding of reference column (6) is put at the center of stop gear (5) lateral surface.

6. A multiple anti-theft bolt according to claim 1, wherein: the screw rod (1) is characterized in that a locking screw rod (14) is arranged in a screw hole formed in the middle of the bottom end of the screw rod, strip-shaped holes (15) are formed in the positions, corresponding to the two ends of the locking screw rod (14), of the outer sheath (13), and the two ends of the locking screw rod (14) are located in the strip-shaped holes (15).

7. A multiple anti-theft bolt according to claim 1, wherein: the central point of bottom plate (2) puts and offers the through-hole that supplies pivot (4) to pass, stopper (17) meshing limit gear (5), the tooth's socket slope of limit gear (5) is the anticlockwise and arranges.