CN115750575A - Anti-theft bolt and nut assembly - Google Patents

Abstract

The invention discloses an anti-theft bolt and nut assembly which comprises a screw and a nut, wherein an arc-shaped groove is formed in the outer arc surface of an arc-shaped plate and is matched with a second sliding block, a second arc-shaped sliding rail is fixedly connected to the inner wall of a second barrel body, a second dovetail groove is formed in the top surface of a circular ring, a second dovetail block is arranged in the second dovetail groove in a fitting and sliding mode, a second vertical rod is fixedly connected to the top surface of the second dovetail block, a first compression spring is arranged in the second dovetail groove, the other end of the second sliding rod penetrates out of the second sliding groove and is fixedly connected with a ball, the side wall of the ball is fitted with the side wall of the second vertical rod, the barrel body is made of alloy steel materials, the first sliding rod and the second sliding rod are connected in a welding mode, the wall thickness of the arc-shaped plate is 3mm-5mm, the screw and the nut can be fixed, when the screw and the nut are separated, the second barrel body needs to be repeatedly twisted to generate amplitude movement, the screw and the nut can be indirectly separated, the stealing time is prolonged, the safety performance is improved, and the use requirements are met.

Description

Anti-theft bolt and nut assembly

Technical Field

The invention relates to the technical field of theft prevention, in particular to a theft prevention bolt and nut assembly.

Background

The bolt has an important role in daily life, and in industrial production, the bolt occupies an important position, has a simple type and is too wide in universality, so that the anti-theft performance of the bolt is very small, and in some occasions, the bolt is a first pass for anti-theft, so that the anti-theft performance of the bolt must be taken into consideration; the existing anti-theft bolt has certain defects in use, is expensive and small in matching, is insufficient in daily maintenance, too low in anti-theft performance, single in functionality and poor in practicability, is easy to crack and split in a short time by lawless persons, causes immeasurable loss, brings certain influence to the use process of people, and cannot meet the use requirement.

Disclosure of Invention

In order to solve the existing problems, the invention provides an anti-theft bolt and nut assembly.

The invention is realized by the following technical scheme:

an anti-theft bolt and nut assembly comprises a screw rod and a nut, wherein the nut is attached to and sleeved on the screw rod and matched with the screw rod, the screw rod is of a hollow structure, the bottom surface of the nut is fixedly connected with a first barrel body, the inner and outer sections of the first barrel body are circular, a one-way bearing is fixedly embedded in the bottom surface of the first barrel body, the rotating direction of an inner ring of the one-way bearing is opposite to the screwing direction of the nut, the inner ring of the one-way bearing is fixedly connected with a first vertical rod, the section of the first vertical rod is square, a rubber ring is fixedly sleeved on the first vertical rod, the outer arc surface of the rubber ring is attached to the inner wall of the first barrel body, a first bearing is fixedly sleeved on the side wall of the top end of the screw rod, the first bearing is an one-way bearing, the rotating direction of the inner ring of the first bearing is opposite to the screwing direction of the screw rod, the outer ring of the first bearing is fixedly sleeved with a first barrel body, the inner and outer sections of the first barrel body are circular, the inner wall of the first barrel body is provided with a second barrel body in a laminating and rotating manner, the top surface of the second barrel body is fixedly connected with a second barrel body, the inner section of the second barrel body is circular, the outer section of the second barrel body is a regular polygon, a first dovetail groove is annularly formed in the inner wall of the first barrel body, a plurality of first dovetail blocks are arranged in the first dovetail groove in a laminating and sliding manner, the side wall of each first dovetail block is fixedly connected with the outer wall of the second barrel body, the top surface of the screw rod is fixedly connected with the barrel body, the top surface of the barrel body is laminated with the inner bottom surface of the second barrel body, a third barrel body is arranged in the screw rod in a laminating and rotating manner, the outer section of the third barrel body is circular, the inner section of the third barrel body is square, the top end of the third barrel body penetrates into the barrel body and is rotatably connected with the third barrel body, the bottom surface of the third barrel body and the bottom surface of the screw rod are positioned on the same plane, and the top end of the first vertical rod penetrates into the third barrel body and is slidably connected with the third barrel body, the third barrel body is fixedly sleeved with a second bearing, the outer ring of the second bearing is fixedly embedded in the top surface of the screw rod, the barrel body is sleeved with a circular ring in a laminating and rotating manner, the side wall of the barrel body is provided with a first sliding chute, a first sliding block is arranged in the first sliding chute in a laminating and sliding manner, one end of the first sliding block is fixedly connected with an inner arc surface of the circular ring, the other end of the first sliding block is fixedly connected with the outer wall of the third barrel body, the bottom surface of the first barrel body is a frosted surface, the top surface of the first barrel body is fixedly connected with a first arc-shaped sliding rail, the cross section of the first arc-shaped sliding rail is triangular, the bottom surface of the second barrel body is laminated with the top surface of the circular ring, the inner wall of the second barrel body is fixedly connected with a second sliding block, one side of the top surface of the circular ring is fixedly connected with a positioning rod, the side wall of the positioning rod is laminated with the side wall of the second sliding block, and the other side of the top surface of the circular ring is fixedly connected with an arc-shaped plate, the arc-shaped groove is formed in the outer arc surface of the arc-shaped plate, the arc-shaped groove is matched with the second sliding block, a second arc-shaped sliding rail is fixedly connected to the inner wall of the second barrel body, a second dovetail groove is formed in the top surface of the ring, the section of the second dovetail groove is arc-shaped, a second dovetail block is arranged in the second dovetail groove in a laminating and sliding mode, a second vertical rod is fixedly connected to the top surface of the second dovetail block, a first compression spring is arranged in the second dovetail groove, the outer section of the barrel body is circular, a first sliding rod is arranged in the barrel body in a sliding mode, the section of the first sliding rod is square, two ends of the first sliding rod penetrate through the barrel body and are fixedly connected with a first rack, the tooth shape on the first rack is a right triangle, the first sliding rod is connected with the barrel body in a sliding mode, L-shaped rods are fixedly connected to two side walls of the first rack, and wheels are rotatably connected to one end of each L-shaped rod through a pin shaft, the utility model discloses a barrel, including the second staving, the second staving inside wall is opened flutedly, fixedly connected with second rack in the recess, the flute profile on the second rack is right angled triangle, and the first rack and the second rack of one side mesh, and the two-wheeled setting of one side is in the recess, staving lateral wall symmetry is opened there are two second spouts, the laminating slides in the second spout and is equipped with the second slide bar, second slide bar one end penetrate in the staving and with first slide bar lateral wall fixed connection, second spout and fixedly connected with ball are worn out to the second slide bar other end, a ball lateral wall and the laminating of second montant lateral wall.

Preferably, the barrel body is made of alloy steel materials.

Preferably, the first sliding rod and the second sliding rod are connected by welding.

Preferably, the wall thickness of the arc-shaped plate is 3mm-5mm.

Compared with the prior art, the invention has the beneficial effects that: this device simple structure, the function is various, therefore, the clothes hanger is strong in practicability, through setting up the staving, the third staving, the second bearing, the ring, first slider, first arc slide rail, the second slider, the locating lever, the arc, second arc slide rail, second dovetail block, the second montant, first compression spring, first slide bar, first rack, L shape pole, the wheel, the second rack, screw rod and ball can realize the fixed of screw rod and nut, when carrying out the separation of screw rod and nut, need twist repeatedly and move the second staving and take place the amplitude motion, just can indirectly make screw rod and nut separation, the time is stolen in the extension, and the safety performance is improved, and the use demand is satisfied.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a right side view of the structure of the present invention;

FIG. 4 is a cross-sectional view of the block diagram of FIG. 3 and a partial enlarged view thereof according to the present invention;

FIG. 5 is a top view of the structure of the present invention;

FIG. 6 isbase:Sub>A cross-sectional view A-A of the structure of the present invention;

fig. 7 is a schematic diagram of the operation of the structure of the present invention.

In the figure: the device comprises a screw rod 1, a nut 2, a first barrel 3, a one-way bearing 4, a first vertical rod 5, a rubber ring 6, a first bearing 7, a first barrel 8, a second barrel 9, a second barrel 10, a first dovetail block 11, a barrel 12, a third barrel 13, a second bearing 14, a circular ring 15, a first slider 16, a first arc-shaped slide rail 17, a second slider 18, a positioning rod 19, an arc-shaped plate 20, a second arc-shaped slide rail 21, a second dovetail block 22, a second vertical rod 23, a first compression spring 24, a first slide rod 25, a first rack 26, an L-shaped rod 27, a wheel 28, a second rack 29, a second slide rod 30, a ball 31, a first dovetail groove 8-1, a groove 10-1, a first chute 12-1, a second chute 12-2, a second dovetail groove 15-1 and an arc-1.

Detailed Description

The invention is described in further detail below with reference to the following figures and embodiments:

as shown in fig. 1-7, an anti-theft bolt and nut assembly comprises a screw rod 1 and a nut 2, wherein the nut 2 is fitted on and matched with the screw rod 1, the screw rod 1 is of a hollow structure, the bottom surface of the nut 2 is fixedly connected with a first barrel 3, the inner and outer sections of the first barrel 3 are both circular, a one-way bearing 4 is fixedly embedded on the inner bottom surface of the first barrel 3, the rotation direction of the inner ring of the one-way bearing 4 is opposite to the screwing direction of the nut 2, the inner ring of the one-way bearing 4 is fixedly connected with a first vertical rod 5, the section of the first vertical rod 5 is square, a rubber ring 6 is fixedly sleeved on the first vertical rod 5, the outer arc surface of the rubber ring 6 is fitted on the inner wall of the first barrel 3, a first bearing 7 is fixedly sleeved on the side wall of the top end of the screw rod 1, the first bearing 7 is a one-way bearing, the rotation direction of the inner ring of the first bearing 7 is opposite to the screwing direction of the screw rod 1, the outer ring of the first bearing 7 is fixedly sleeved with a first barrel body 8, the inner and outer sections of the first barrel body 8 are circular, the inner wall of the first barrel body 8 is provided with a second barrel body 9 in a fitting and rotating manner, the top surface of the second barrel body 9 is fixedly connected with a second barrel body 10, the inner section of the second barrel body 10 is circular, the outer section of the second barrel body 10 is a regular polygon, the inner wall of the first barrel body 8 is provided with a first dovetail groove 8-1 in a ring shape, a plurality of first dovetail blocks 11 are arranged in the first dovetail groove 8-1 in a fitting and sliding manner, the side wall of each first dovetail block 11 is fixedly connected with the outer wall of the second barrel body 9, the top surface of the screw rod 1 is fixedly connected with a barrel body 12, the top surface of the barrel body 12 is fitted with the inner bottom surface of the second barrel body 10, a third barrel body 13 is arranged in the screw rod 1 in a fitting and rotating manner, and the outer section of the third barrel body 13 is circular, the inner cross section of the third barrel body 13 is square, the top end of the third barrel body 13 penetrates into the barrel body 12 and is rotatably connected with the barrel body, the bottom surface of the third barrel body 13 and the bottom surface of the screw rod 1 are positioned on the same plane, the top end of the first vertical rod 5 penetrates into the third barrel body 13 and is slidably connected with the third barrel body, a second bearing 14 is fixedly sleeved on the third barrel body 13, an outer ring of the second bearing 14 is fixedly embedded into the top surface of the screw rod 1, a ring 15 is fixedly sleeved on the barrel body 12 in a fit and rotation manner, a first sliding chute 12-1 is formed in the side wall of the barrel body 12, a first sliding block 16 is slidably arranged in the first sliding chute 12-1 in a fit manner, one end of the first sliding block 16 is fixedly connected with an inner arc surface of the ring 15, the other end of the first sliding block 16 is fixedly connected with the outer wall of the third barrel body 13, the bottom surface of the first barrel body 8 is a frosted surface, a first arc-shaped sliding rail 17 is fixedly connected to the top surface of the first barrel body 8, the cross section of the first sliding rail 17 is triangular, the bottom surface of the second sliding block 10 is attached to the top surface of the ring 15, a second sliding block 22 is fixedly connected to the top surface of the dovetail groove 15, a second sliding block 20-20 is fixedly connected to the top surface of the dovetail groove, the dovetail groove 22 is connected to the top surface of the dovetail groove 15, the second sliding block, the dovetail groove 15, the side wall of the dovetail groove 15 is fixedly connected with the second sliding block 22, the dovetail groove 22 is fixedly connected to the dovetail groove 22, the dovetail groove 15, the dovetail groove 22 is connected to the top surface of the dovetail groove 22 is fixedly connected to the dovetail groove 15, the dovetail groove 22, the dovetail groove 15, the second sliding block 22 is connected to the dovetail groove 22, the barrel is characterized in that a first compression spring 24 is arranged in the second dovetail groove 15-1, the outer cross section of the barrel body 12 is circular, a first sliding rod 25 is arranged in the barrel body 12 in a sliding mode, the cross section of the first sliding rod 25 is square, two ends of the first sliding rod 25 penetrate out of the barrel body 12 and are fixedly connected with a first rack 26, the teeth on the first rack 26 are in a right-angled triangle shape, the first sliding rod 25 is connected with the barrel body 12 in a sliding mode, two side walls of the first rack 26 are fixedly connected with an L-shaped rod 27, one end of the L-shaped rod 27 is rotatably connected with a wheel 28 through a pin shaft, the inner side wall of the second barrel body 10 is provided with a groove 10-1, the groove 10-1 is internally and fixedly connected with a second rack 29, the teeth on the second rack 29 are in a right-angled triangle shape, the first rack 26 on one side is meshed with the second rack 29, two wheels 28 on one side are arranged in the groove 10-1, the side wall of the barrel body 12 is symmetrically provided with two second sliding chutes 12-2, a second sliding chute 12-2 is provided with a second sliding groove 30, one end penetrates into the first sliding rod 12 and is fixedly connected with a ball 31, and the other end of the sliding rod 12 is fixedly connected with a second sliding rod 31, and the side wall of the second sliding rod 31.

The barrel body 12 is made of alloy steel materials.

The first slide bar 25 and the second slide bar 30 are connected by welding.

The wall thickness of the arc-shaped plate 20 is 3mm-5mm.

The working principle is as follows: when the device needs to be fixed to prevent theft, the device replaces the traditional bolt and nut for fixing, firstly, the second barrel body 10 is moved, the second barrel body 10 drives the second barrel body 9 to move, the second barrel body 9 drives the first dovetail block 11 to move, the first dovetail block 11 drives the first barrel body 8 to move, the first barrel body 8 drives the first bearing 7 to move, the first bearing 7 drives the screw rod 1 to move to penetrate through a reserved hole of the device, the second barrel body 10 is arranged outside the device, then the nut 2 is moved to the other side of the device, the nut 2 drives the first barrel body 3 to move, the first barrel body 3 drives the one-way bearing 4 to move, the one-way bearing 4 drives the first vertical rod 5 to move and insert into the third barrel body 13, the second barrel body 10 is clamped through a spanner so that the second barrel body 10 cannot rotate, the second barrel body 10 cannot rotate so that the second rack 29 cannot rotate, the second rack 29 can not rotate to make the first rack 26 meshed with the second rack not rotate, the first rack 26 can not rotate to make the first slide bar 25 can not rotate, the first slide bar 25 can not rotate to make the barrel body 12 can not rotate, the barrel body 12 can not rotate to make the screw 1 can not rotate, thereby realizing the limit of the screw 1, another wrench clamps the nut 2 and rotates the nut 2 to match with the screw 1, the nut 2 rotates and moves on the screw 1, the nut 2 drives the first barrel body 3 to rotate, the first barrel body 3 drives the one-way bearing 4 to rotate, when the surface of the nut 2 is attached to the surface of the equipment, the nut 2 stops rotating, at the moment, the equipment is fixed, the rubber ring 6 is arranged to play a role in limiting the first vertical bar 5, the first vertical bar 5 is prevented from rotating artificially, when a thief steals, the second barrel body 10 is clamped by the wrench, then the second barrel body 10 rotates clockwise, the bottom surface of the first barrel 8 is a frosted surface, friction force between the first barrel 8 and equipment is increased, the screw 1 drives the inner ring of the first bearing 7 to rotate, the first barrel 8 cannot rotate at the moment, the first barrel 8 cannot rotate so that the first arc-shaped slide rail 17 cannot rotate, the wrench drives the second barrel 10 to rotate, the wrench gradually passes through the first arc-shaped slide rail 17, the first arc-shaped slide rail 17 pushes the wrench to gradually move upwards to be separated from the second barrel 10, the second barrel 10 drives the second barrel 9 to rotate, the second barrel 9 drives the second slide block 18 to rotate, the second barrel 9 drives the first dovetail block 11 to slide in the first dovetail groove 8-1, the second barrel 10 drives the second arc-shaped slide rail 21 to rotate, the second barrel 10 drives the second rack 29 to rotate, the second rack 29 drives the first rack 26 meshed with the second rack 29 to rotate, the first rack 26 drives the first slide bar 25 to rotate, the first slide bar 25 drives the barrel 12 to rotate, barrel 12 drives screw 1 to rotate and gradually separate from nut 2, first slide bar 25 drives second slide bar 30 to rotate, second slide bar 30 drives ball 31 to rotate, ball 31 pushes second vertical bar 23 to slide, second vertical bar 23 drives second dovetail block 22 to slide and extrude first compression spring 24 to deform, first slide bar 25 drives another first rack 26 to rotate, another first rack 26 rotates and drives L-shaped bar 27 to rotate, L-shaped bar 27 drives wheel 28 to rotate and to be attached to the inner arc surface of arc-shaped plate 20, ball 31 attached to second vertical bar 23 gradually rotates and separates from the side wall of second vertical bar 23, at the moment, arc-shaped plate 20 limits wheel 28 to make wheel 28 immovable, wheel 28 can not move to make L-shaped bar 27 immovable, L-shaped bar 27 can not move to make first rack 26 immovable, first rack 26 can not move to make first slide bar 25 immovable, thereby ensuring that a first rack 26 is tightly meshed with a second rack 29 in the rotating process, another ball 31 rotates gradually to be attached to the side wall of the second vertical rod 23 and push the second vertical rod 23 to slide, the second barrel body 10 drives the second slide block 18 to move and slide gradually into the arc-shaped groove 20-1, when two wheels 28 attached to the inner arc surface of the arc-shaped plate 20 are separated from the arc-shaped plate 20, the second slide block 18 slides in the arc-shaped groove 20-1 and is attached to the side wall of the arc-shaped plate 20 at the moment, the arc-shaped plate 20 limits the second slide block 18, so that the second slide block 18 can not slide any more, if the second barrel body 10 is rotated continuously, the second barrel body 10 drives the second slide block 18 to rotate, the second slide block 18 drives the arc-shaped plate 20 to rotate, the arc-shaped plate 20 drives the ring 15 to rotate, the ring 15 drives the first slide block 16 to rotate, the first slide block 16 drives the third barrel body 13 to rotate, and the third barrel body 13 drives the first vertical rod 5 to rotate, the first vertical rod 5 drives the one-way bearing 4 to rotate, the one-way bearing 4 drives the first barrel body 3 to rotate, the first barrel body 3 drives the nut 2 to rotate, the rotation direction of the nut 2 is the screwing direction of the nut 2, the screw 1 and the nut 2 cannot rotate at the time, the extruded first compression spring 24 drives the second dovetail block 22 to move, the second dovetail block 22 drives the second vertical rod 23 to move to push the ball 31 attached to the surface of the second vertical rod 23 to move, the ball 31 drives the second sliding rod 30 to move, the second sliding rod 30 drives the first sliding rod 25 to move, the first sliding rod 25 drives the first rack 26 to move to be separated from the second rack 29, the first sliding rod 25 indirectly drives the wheel 28 on one side to slide to be attached to the surface of the second arc-shaped sliding rail 21, as shown in figure 7, the wrench is just separated from the second barrel body 10 at the time, and then the second barrel body 10 is rotated counterclockwise, the second barrel body 10 drives the second arc-shaped sliding rail 21 to rotate, the second barrel body 10 drives the second sliding block 18 to rotate and gradually slide out of the arc-shaped groove 20-1, the second arc-shaped sliding rail 21 gradually rotates and is separated from the two wheels 28 attached to the second arc-shaped sliding rail, when the second arc-shaped sliding rail 21 is separated from the two wheels 28, the second sliding block 18 is just attached to the side wall of the positioning rod 19, the second arc-shaped sliding rail 21 cannot limit the wheels 28 at the moment, the wheels 28 can move, the deformed first compression spring 24 pushes the second dovetail block 22 to move again, the second dovetail block 22 indirectly pushes a first rack 26 to be meshed with the second rack 29, the first rack 26 limits the second rack 29, as shown in fig. 5, then the second barrel body 10 continues to rotate, the second barrel body 10 indirectly drives the screw rod 1 to rotate and is separated from the nut 2, the second barrel body 10 needs to be repeatedly screwed, separation of the screw rod 1 from the nut 2 can be realized, stealing time is prolonged, using requirements are met, the setting of the first compression spring 24 plays an effective one-way return function, and a first one-way return bearing 4 and a normal operation is guaranteed.

The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides an anti-theft bolt and nut assembly, includes screw rod (1), nut (2) laminating cover is on screw rod (1) and rather than the phase-match, screw rod (1) is hollow structure, nut (2) bottom surface fixedly connected with first barrel (3), the interior outer cross-section of first barrel (3) is for being circular, the bottom surface is fixed to be embedded in first barrel (3) has one-way bearing (4), one-way bearing (4) inner ring direction of rotation is opposite with the screwing up direction of nut (2), one-way bearing (4) inner ring fixedly connected with first montant (5), first montant (5) cross-section is square, fixed cover has rubber ring (6) on first montant (5), rubber ring (6) extrados and the laminating of first barrel (3) inner wall, screw rod (1) top end lateral wall fixed cover has first bearing (7), first bearing (7) are one-way bearing, the direction of rotation of first bearing (7) inner ring is opposite with the screwing up direction of screw rod (1), first bearing (7) top surface is equipped with second barrel (8), first bearing (9) outer ring inner ring fixed cover is equipped with second barrel (8), the utility model discloses a barrel, including second barrel body (10), second barrel body (10) inner section is circular, second barrel body (10) outer section is regular polygon, first dovetail (8-1) have been opened to first barrel body (8) inner wall annular, the laminating slides in first dovetail (8-1) and is equipped with a plurality of first dovetail blocks (11), first dovetail block (11) lateral wall and second barrel body (9) outer wall fixed connection, its characterized in that: the top surface of the screw rod (1) is fixedly connected with a barrel body (12), the top surface of the barrel body (12) is attached to the inner bottom surface of the second barrel body (10), a third barrel body (13) is arranged in the screw rod (1) in an attaching and rotating manner, the outer cross section of the third barrel body (13) is circular, the inner cross section of the third barrel body (13) is square, the top end of the third barrel body (13) penetrates into the barrel body (12) and is rotationally connected with the third barrel body, the bottom surface of the third barrel body (13) is positioned on the same plane with the bottom surface of the screw rod (1), the top end of a first vertical rod (5) penetrates into the third barrel body (13) and is slidably connected with the third barrel body, a second bearing (14) is fixedly sleeved on the third barrel body (13), the outer ring of the second bearing (14) is fixedly embedded into the top surface of the screw rod (1), a ring (15) is attached to the barrel body (12), a first chute (12-1) is opened on the side wall of the barrel body (12), a first chute (12-1) is slidably provided with a first slider (16), one end of the first slider (16) is fixedly connected with the inner ring (15), and the first chute (8) and is connected with the first grinding barrel body (13) and is connected with the first grinding head (8), the cross section of the first arc-shaped sliding rail (17) is triangular, the bottom surface of the second barrel body (10) is attached to the top surface of a circular ring (15), the inner wall of the second barrel body (9) is fixedly connected with a second sliding block (18), one side of the top surface of the circular ring (15) is fixedly connected with a positioning rod (19), the side wall of the positioning rod (19) is attached to the side wall of the second sliding block (18), the other side of the top surface of the circular ring (15) is fixedly connected with an arc-shaped plate (20), an arc-shaped groove (20-1) is formed in the outer arc surface of the arc-shaped plate (20), the arc-shaped groove (20-1) is matched with the second sliding block (18), the inner wall of the second barrel body (10) is fixedly connected with a second arc-shaped sliding rail (21), a second dovetail groove (15-1) is formed in the top surface of the circular ring (15), the cross section of the second dovetail groove (15-1) is arc-shaped, a second dovetail groove (15-1) is arranged in a fit sliding mode and is provided with a second dovetail block (22), a second dovetail groove (15-1) is fixedly connected with a second dovetail block (23), a second dovetail groove (15-1) penetrates through, the outer sliding rod (24) is arranged in the first sliding groove (12), the outer sliding rod (25) and a first sliding spring compression slide bar (25) is arranged in the second dovetail groove (25), the first sliding block (25), the first sliding groove (25) and the first sliding groove (25) is arranged in the second dovetail block (25) and the outer sliding rod (25) and the second dovetail groove (12) is arranged in the second dovetail groove (25) and the compression section of the second dovetail groove (15) is arranged in the second dovetail groove (25) 26 The utility model discloses a novel garbage can, including first rack (26), first slide bar (25) and staving (12) sliding connection, first rack (26) both sides wall fixedly connected with L shape pole (27), L shape pole (27) one end has wheel (28) through round pin axle swivelling joint, second staving (10) inside wall is opened flutedly (10-1), fixedly connected with second rack (29) in recess (10-1), the tooth shape on second rack (29) is right angled triangle, and first rack (26) and second rack (29) meshing of one side, two wheels (28) of one side set up in recess (10-1), staving (12) lateral wall symmetry is opened has two second spout (12-2), the laminating slides in second spout (12-2) is equipped with second slide bar (30), second slide bar (30) one end penetrates in staving (12) and with first slide bar (25) lateral wall fixed connection, the second slide bar (30) other end is worn out second spout (12-2) and fixed ball (31) and is laminated with second slide bar (31) lateral wall (31), and second slide bar (23) lateral wall (31).

2. An anti-theft bolt and nut assembly according to claim 1, wherein: the barrel body (12) is made of alloy steel materials.

3. The anti-theft bolt and nut assembly according to claim 1, wherein: the first sliding rod (25) and the second sliding rod (30) are connected in a welding mode.

4. An anti-theft bolt and nut assembly according to claim 1, wherein: the wall thickness of the arc-shaped plate (20) is 3mm-5mm.

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