Anti-theft bolt

Abstract

The invention discloses an anti-theft bolt, comprising a bolt body, wherein an anti-theft cylinder is fixedly sleeved on the bolt body; a nut is fixedly sleeved on the bolt body; a circular baffle is fixedly connected to the end of the bolt body; the nut and the circular baffle are located inside the cylinder; a nut tightening assembly which can be detachably sleeved with the nut is provided inside the anti-theft cylinder; the nut tightening assembly is detachably sleeved in the anti-theft cylinder; the bolt is tightened and tightened by using the matching nut tightening assembly, and after tightening, the nut tightening assembly is removed, and then the anti-theft cylinder can be used to protect the nut exposed to the outside, thereby preventing outsiders from tightening the nut, and further preventing the external inlay from screwing the nut by the existence of the baffle, thereby effectively protecting the safe use of the bolt and reducing the risk of theft.

Description

Technical Field

[0001] The invention belongs to the technical field of bolts, and in particular relates to an anti-theft bolt. Background Art

[0002] Bolts are standard parts commonly used in life and are used in various fields. Conventional bolts include flat, cross, or hexagonal bolts, which can be disassembled using conventional tools. However, some outdoor machinery or outdoor fitness equipment are easily damaged or stolen.

[0003] Current bolts are tightened with nuts when in use, which results in the nut at one end always being exposed. This traditional nut tightening method exposes the nut and makes it easy for it to be unscrewed and stolen, causing damage to the equipment and economic waste. Summary of the invention

[0004] To this end, the present invention provides an anti-theft bolt to solve the problem that the bolt in the prior art is tightened by a nut when in use, which will result in the nut at one end always being exposed to the outside; this traditional nut tightening method exposes the nut to the outside and is easy to be unscrewed and stolen, causing damage to the equipment and economic waste.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-theft bolt, comprising a bolt body, on which an anti-theft cylinder is fixedly sleeved; a nut is fixedly sleeved on the bolt body; a circular baffle is fixedly connected to the end of the bolt body; the nut and the circular baffle are located inside the cylinder; a nut tightening assembly that can be detachably sleeved with the nut is provided inside the anti-theft cylinder; the nut tightening assembly is detachably sleeved in the anti-theft cylinder.

[0006] Furthermore, the nut tightening assembly includes two semicircular arc bodies with the same structure, which are spliced ​​together to form a tube body structure; the inner ring wall at one end of the tube body structure is a nut bayonet structure that is engaged and matched with the nut; the vertical section of the inner ring wall at one end of the tube body structure away from the nut bayonet structure is a regular polygonal structure; a regular polygonal column is inserted into the regular polygonal structure; and a fixing sleeve is provided on the outer ring of the tube body structure.

[0007] Furthermore, the bolt body and the nut are integrally formed.

[0008] Furthermore, the bolt body and the circular baffle are an integrally formed structure.

[0009] Furthermore, the bolt body, the anti-theft cylinder, the nut and the circular baffle are on the same axial line.

[0010] Furthermore, a sealing circular plate is connected to one end of the anti-theft cylinder; a bolt through hole which is plug-matched with the bolt body is opened at the center of the sealing circular plate.

[0011] Furthermore, the outer diameter of the baffle is equal to the diameter of the circumscribed circle of the nut.

[0012] Furthermore, the inner diameter of the anti-theft cylinder is larger than the outer diameter of the baffle.

[0013] Furthermore, there is a gap between the nut and the baffle.

[0014] Furthermore, a baffle activity space is provided inside the tube structure.

[0015] The invention has the following advantages: an anti-theft bolt comprises a bolt body, an anti-theft cylinder is fixedly sleeved on the bolt body; a nut is fixedly sleeved on the bolt body; a circular baffle is fixedly connected to the end of the bolt body; the nut and the circular baffle are located inside the cylinder; a nut tightening assembly which can be detachably sleeved with the nut is provided inside the anti-theft cylinder; the nut tightening assembly is detachably sleeved in the anti-theft cylinder; the bolt is tightened and tightened by using a matching nut tightening assembly, and after tightening, the nut tightening assembly is removed, and then the anti-theft cylinder can be used to protect the nut exposed to the outside, thereby preventing outsiders from tightening it, and further preventing the external inlay from tightening the nut by the presence of the baffle, thereby effectively protecting the safe use of the bolt and reducing the risk of theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of an anti-theft bolt provided by a specific embodiment of the present invention;

[0019] Figure 2It is a structural schematic diagram of a bolt body-related connecting piece of an anti-theft bolt provided by a specific embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of an anti-theft cylinder structure of an anti-theft bolt provided by a specific embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of a semicircular guard plate of a nut tightening assembly of an anti-theft bolt provided by a specific embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of a regular polygonal column structure of a nut tightening assembly of an anti-theft bolt provided by a specific embodiment of the present invention;

[0023] Figure 6 The present invention is a schematic diagram of a fixed sleeve structure of a nut tightening assembly of an anti-theft bolt provided in a specific embodiment of the present invention.

[0024] In the figure: a bolt body 11, an anti-theft cylinder 12, a nut 13, a circular baffle 14, a sealing circular plate 15, a bolt through hole 16, a semicircular arc body 21, a nut bayonet structure 22, a regular polygonal structure 23, a regular polygonal column 24, a fixing sleeve 25, and a baffle activity space 26. DETAILED DESCRIPTION

[0025] The technical scheme of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but it will be understood by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. If specific conditions are not specified in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] An anti-theft bolt provided in Example 1 of the present invention is shown in FIG. Figure 1 Shown and Figure 2 As shown, it includes a bolt body 11, on which an anti-theft cylinder 12 is fixedly sleeved; a nut 13 is fixedly sleeved on the bolt body 11; a circular baffle 14 is fixedly connected to the end of the bolt body 11; the nut 13 and the circular baffle 14 are located inside the cylinder 12; a nut tightening assembly that can be detachably sleeved with the nut 13 is provided inside the anti-theft cylinder 12; the nut tightening assembly is detachably sleeved in the anti-theft cylinder 12, and the bolt body 11, the anti-theft cylinder 12, the nut 13 and the circular baffle 14 are located on the same axial line.

[0030] When in use, the bolt is tightened by means of a matching nut tightening assembly. After tightening, the nut tightening assembly is removed, and the bolt can then be protected by the anti-theft cylinder. At the same time, the baffle can further prevent the external inlay from tightening the nut, thereby preventing outsiders from tightening the nut exposed to the outside, thereby achieving the purpose of safe use of the bolt.

[0031] Example 2

[0032] An anti-theft bolt provided in Example 2 of the present invention is shown in FIG. Figure 1 Shown and Figure 2 As shown, it comprises a bolt body 11, on which an anti-theft cylinder 12 is fixedly sleeved; a nut 13 is fixedly sleeved on the bolt body 11; a circular baffle 14 is fixedly connected to the end of the bolt body 11; the nut 13 and the circular baffle 14 are inside the cylinder 12; a nut twisting assembly that can be detachably sleeved with the nut 13 is provided inside the anti-theft cylinder 12; the nut twisting assembly is detachably sleeved in the anti-theft cylinder 12. When in use, the bolt is twisted and tightened by the matching nut twisting assembly, and after tightening, the nut twisting assembly is removed, and then the nut exposed to the outside can be protected by the anti-theft cylinder to prevent outsiders from twisting the nut, thereby achieving the purpose of safe use of the bolt.

[0033] This embodiment is preferred, please refer to FIG. Figure 4 , Figure 5 and Figure 6As shown, the nut tightening assembly includes two semicircular arc bodies 21 with the same structure, which are spliced ​​to form a tube structure; the inner wall at one end of the tube structure is a nut bayonet structure 22 that is engaged with the nut 13; the vertical section of the inner wall at one end of the tube structure away from the nut bayonet structure 22 is a regular polygonal structure 23; a regular polygonal column 24 is inserted into the regular polygonal structure 23; and a fixing sleeve 25 is provided on the outer ring of the tube structure.

[0034] When in use, the nut tightening assembly is a proprietary accessory of the anti-theft nut. When in use, first insert one end of a semi-arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle; then insert one end of the other semi-arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle, so that it is combined with the previously inserted semi-arc body to form a tubular structure, and then the fixing sleeve 25 is put on the outer ring of the tubular structure to prevent the two semi-arc bodies from interlacing, so that the tubular structure can firmly clamp the nut, and then insert a regular polygonal column into the polygonal structure, and finally use a wrench to tighten the polygonal column, and achieve the purpose of tightening the nut through the transmission of the tubular structure; the purpose of safely using the nut is achieved and the occurrence of theft is reduced.

[0035] Example 3

[0036] An anti-theft bolt provided in Example 3 of the present invention is shown in FIG. Figure 1 Shown and Figure 2 As shown, it includes a bolt body 11, on which an anti-theft cylinder 12 is fixedly sleeved; a nut 13 is fixedly sleeved on the bolt body 11; a circular baffle 14 is fixedly connected to the end of the bolt body 11; the nut 13 and the circular baffle 14 are located inside the cylinder 12; a nut tightening assembly that can be detachably sleeved with the nut 13 is provided inside the anti-theft cylinder 12; the nut tightening assembly is detachably sleeved in the anti-theft cylinder 12. When in use, the bolt is tightened by means of a matching nut tightening assembly, and after tightening, the nut tightening assembly is removed, and then the anti-theft cylinder can be used to protect the nut exposed to the outside from being tightened by outsiders, thereby achieving the purpose of safe use of the bolt. Please refer to the figure. Figure 4 , Figure 5 and Figure 6As shown, the nut tightening assembly includes two semicircular arc bodies 21 with the same structure, which are spliced ​​to form a tube structure; the inner wall at one end of the tube structure is a nut bayonet structure 22 that is engaged with the nut 13; the vertical section of the inner wall at one end of the tube structure away from the nut bayonet structure 22 is a regular polygonal structure 23; a regular polygonal column 24 is inserted into the regular polygonal structure 23; and a fixing sleeve 25 is provided on the outer ring of the tube structure. When in use, the nut tightening assembly is a proprietary accessory of the anti-theft nut. When in use, first insert one end of a semi-arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle; then insert one end of the other semi-arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle, so that it is combined with the previously inserted semi-arc body to form a tubular structure, and then the fixing sleeve 25 is put on the outer ring of the tubular structure to prevent the two semi-arc bodies from interlacing, so that the tubular structure can firmly clamp the nut, and then insert a regular polygonal column into the polygonal structure, and finally use a wrench to tighten the polygonal column, and achieve the purpose of tightening the nut through the transmission of the tubular structure; the purpose of safely using the nut is achieved and the occurrence of theft is reduced.

[0037] In this embodiment, the bolt body 11 and the nut 13 are integrally formed. The bolt body 11 and the circular baffle 14 are integrally formed. This improves the stability of the product.

[0038] Example 4

[0039] An anti-theft bolt provided in Example 4 of the present invention is shown in FIG. Figure 1 Shown and Figure 2 As shown, it includes a bolt body 11, on which an anti-theft cylinder 12 is fixedly sleeved; a nut 13 is fixedly sleeved on the bolt body 11; a circular baffle 14 is fixedly connected to the end of the bolt body 11; the nut 13 and the circular baffle 14 are located inside the cylinder 12; a nut tightening assembly that can be detachably sleeved with the nut 13 is provided inside the anti-theft cylinder 12; the nut tightening assembly is detachably sleeved in the anti-theft cylinder 12. When in use, the bolt is tightened by means of a matching nut tightening assembly, and after tightening, the nut tightening assembly is removed, and then the anti-theft cylinder can be used to protect the nut exposed to the outside from being tightened by outsiders, thereby achieving the purpose of safe use of the bolt. Please refer to the figure. Figure 4 , Figure 5 and Figure 6As shown, the nut tightening assembly includes two semicircular arc bodies 21 with the same structure, which are spliced ​​to form a tube structure; the inner wall at one end of the tube structure is a nut bayonet structure 22 that is engaged with the nut 13; the vertical section of the inner wall at one end of the tube structure away from the nut bayonet structure 22 is a regular polygonal structure 23; a regular polygonal column 24 is inserted into the regular polygonal structure 23; and a fixing sleeve 25 is provided on the outer ring of the tube structure. When in use, the nut tightening assembly is a proprietary accessory of the anti-theft nut. When in use, first insert one end of a semi-circular body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle; then insert one end of the other semi-circular body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle, so that it is combined with the previously inserted semi-circular body into a tubular structure, and then the fixed sleeve 25 is sleeved on the outer ring of the tubular structure to prevent the two semi-circular bodies from interlacing, so that the tubular structure can firmly clamp the nut, and then insert a regular polygonal column into the polygonal structure, and finally use a wrench to twist the polygonal column, and through the transmission of the tubular structure, the purpose of twisting the nut is achieved; the purpose of using the nut safely is achieved, and the occurrence of theft is reduced. The bolt body 11 and the nut 13 are an integrally formed structure. The bolt body 11 and the circular baffle 14 are an integrally formed structure. Improve the stability of the product.

[0040] This embodiment is preferred, please refer to Figure 3 As shown, a sealing disc 15 is connected to one end of the anti-theft cylinder 12; a bolt through hole 16 is opened at the center of the sealing disc 15 to be plugged and matched with the bolt body 11. When in use, the front end of the bolt body is inserted from the end of the anti-theft cylinder away from the sealing disc, and is inserted from the through hole on the sealing disc, and the nut fits against the inner wall of the sealing disc.

[0041] Example 5

[0042] An anti-theft bolt provided in Example 5 of the present invention is shown in FIG. Figure 1 Shown and Figure 2 As shown, it includes a bolt body 11, on which an anti-theft cylinder 12 is fixedly sleeved; a nut 13 is fixedly sleeved on the bolt body 11; a circular baffle 14 is fixedly connected to the end of the bolt body 11; the nut 13 and the circular baffle 14 are located inside the cylinder 12; a nut tightening assembly that can be detachably sleeved with the nut 13 is provided inside the anti-theft cylinder 12; the nut tightening assembly is detachably sleeved in the anti-theft cylinder 12. When in use, the bolt is tightened by means of a matching nut tightening assembly, and after tightening, the nut tightening assembly is removed, and then the anti-theft cylinder can be used to protect the nut exposed to the outside from being tightened by outsiders, thereby achieving the purpose of safe use of the bolt. Please refer to the figure. Figure 4 , Figure 5 and Figure 6As shown, the nut tightening assembly includes two semicircular arc bodies 21 with the same structure, which are spliced ​​to form a tube structure; the inner wall at one end of the tube structure is a nut bayonet structure 22 that is engaged with the nut 13; the vertical section of the inner wall at one end of the tube structure away from the nut bayonet structure 22 is a regular polygonal structure 23; a regular polygonal column 24 is inserted into the regular polygonal structure 23; and a fixing sleeve 25 is provided on the outer ring of the tube structure. When in use, the nut tightening assembly is a proprietary accessory for anti-theft nuts. When in use, first insert one end of a semi-circular arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle; then insert one end of the other semi-circular arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle, so that it is combined with the previously inserted semi-circular arc body to form a tubular structure, and then the fixing sleeve 25 is put on the outer ring of the tubular structure to prevent the two semi-circular arc bodies from interlacing, so that the tubular structure can firmly clamp the nut, and then insert a regular polygonal column into the polygonal structure, and finally use a wrench to tighten the polygonal column, and the purpose of tightening the nut is achieved through the transmission of the tubular structure; the purpose of using nuts safely is achieved, and the occurrence of theft is reduced. The bolt body 11 and the nut 13 are an integrally formed structure. The bolt body 11 and the circular baffle 14 are an integrally formed structure. Improve the stability of the product. Please refer to Figure 3 As shown, a sealing disc 15 is connected to one end of the anti-theft cylinder 12; a bolt through hole 16 is opened at the center of the sealing disc 15 to be plugged and matched with the bolt body 11. When in use, the front end of the bolt body is inserted from the end of the anti-theft cylinder away from the sealing disc, and is inserted from the through hole on the sealing disc, and the nut fits against the inner wall of the sealing disc.

[0043] In this embodiment, the outer diameter of the baffle 14 is equal to the diameter of the circumscribed circle of the nut 13. This prevents the nut from being screwed by a nut screwing assembly other than the one mentioned in this product. The inner diameter of the anti-theft cylinder 12 is larger than the outer diameter of the baffle 14. This enables the semicircular body to smoothly enter the anti-theft cylinder and engage with the nut.

[0044] Example 6

[0045] An anti-theft bolt provided in Example 6 of the present invention is shown in FIG. Figure 1 Shown and Figure 2As shown, it includes a bolt body 11, on which an anti-theft cylinder 12 is fixedly sleeved; a nut 13 is fixedly sleeved on the bolt body 11; a circular baffle 14 is fixedly connected to the end of the bolt body 11; the nut 13 and the circular baffle 14 are located inside the cylinder 12; a nut tightening assembly that can be detachably sleeved with the nut 13 is provided inside the anti-theft cylinder 12; the nut tightening assembly is detachably sleeved in the anti-theft cylinder 12. When in use, the bolt is tightened by means of a matching nut tightening assembly, and after tightening, the nut tightening assembly is removed, and then the anti-theft cylinder can be used to protect the nut exposed to the outside from being tightened by outsiders, thereby achieving the purpose of safe use of the bolt. Please refer to the figure. Figure 4 , Figure 5 and Figure 6 As shown, the nut tightening assembly includes two semicircular arc bodies 21 with the same structure, which are spliced ​​to form a tube structure; the inner wall at one end of the tube structure is a nut bayonet structure 22 that is engaged with the nut 13; the vertical section of the inner wall at one end of the tube structure away from the nut bayonet structure 22 is a regular polygonal structure 23; a regular polygonal column 24 is inserted into the regular polygonal structure 23; and a fixing sleeve 25 is provided on the outer ring of the tube structure. When in use, the nut tightening assembly is a proprietary accessory for anti-theft nuts. When in use, first insert one end of a semi-circular arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle; then insert one end of the other semi-circular arc body containing a nut bayonet structure into the anti-theft cylinder, and engage with the outer ring part of the nut after passing through the baffle, so that it is combined with the previously inserted semi-circular arc body to form a tubular structure, and then the fixing sleeve 25 is put on the outer ring of the tubular structure to prevent the two semi-circular arc bodies from interlacing, so that the tubular structure can firmly clamp the nut, and then insert a regular polygonal column into the polygonal structure, and finally use a wrench to tighten the polygonal column, and the purpose of tightening the nut is achieved through the transmission of the tubular structure; the purpose of using nuts safely is achieved, and the occurrence of theft is reduced. The bolt body 11 and the nut 13 are an integrally formed structure. The bolt body 11 and the circular baffle 14 are an integrally formed structure. Improve the stability of the product. Please refer to Figure 3 As shown, a sealing circular plate 15 is connected to one end of the anti-theft cylinder 12; a bolt through hole 16 that is plugged and matched with the bolt body 11 is opened at the center of the sealing circular plate 15. When in use, the front end of the bolt body is inserted from the end of the anti-theft cylinder away from the sealing circular plate, and inserted from the through hole on the sealing circular plate, and the nut fits against the inner wall of the sealing circular plate. The outer diameter of the baffle 14 is equal to the diameter of the circumscribed circle of the nut 13. Prevent the nut from being screwed by any nut screwing assembly other than the one mentioned in this product. The inner diameter of the anti-theft cylinder 12 is larger than the outer diameter of the baffle 14. It enables the semicircular arc body to smoothly enter the anti-theft cylinder and engage with the nut.

[0046] In this embodiment, preferably, there is a gap between the nut 13 and the baffle 14. A baffle activity space 26 is provided inside the tube structure.

[0047] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. An anti-theft bolt, characterized in that: It comprises a bolt body, on which an anti-theft cylinder is fixedly sleeved; a nut is fixedly sleeved on the bolt body; a circular baffle is fixedly connected to the end of the bolt body; the nut and the circular baffle are located inside the cylinder; a nut tightening assembly that can be detachably sleeved with the nut is provided inside the anti-theft cylinder; the nut tightening assembly is detachably sleeved in the anti-theft cylinder; The nut tightening assembly comprises two semicircular arc bodies with the same structure, which are spliced ​​to form a tube structure; the inner wall at one end of the tube structure is a nut bayonet structure that is engaged with the nut; the vertical section of the inner wall at one end of the tube structure away from the nut bayonet structure is a regular polygon structure; a regular polygonal column is inserted in the regular polygon structure; a fixed sleeve is provided on the outer ring of the tube structure; and a baffle activity space is provided inside the tube structure; The bolt body and the circular baffle are in an integrally formed structure; The outer diameter of the baffle is equal to the diameter of the circumscribed circle of the nut; The inner diameter of the anti-theft cylinder is greater than the outer diameter of the baffle; There is a gap between the nut and the baffle.

2. The anti-theft bolt according to claim 1, characterized in that: The bolt body and the nut are in an integrally formed structure.

3. The anti-theft bolt according to claim 1, characterized in that: The bolt body, the anti-theft cylinder, the nut and the circular baffle are located on the same axial line.

4. The anti-theft bolt according to claim 1, characterized in that: A sealing circular plate is connected to one end of the anti-theft cylinder; a bolt through hole which is plug-matched with the bolt body is opened at the center of the sealing circular plate.

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