Anti-theft bolt and traffic rail

Abstract

The application discloses an anti-theft bolt and a traffic track, which comprises a bolt body provided with external threads for cooperating with a target threaded hole, the bolt body is provided with a safety hole communicated to the top end of the bolt body, the safety hole is provided with internal threads and a first matching structure; a safety stud is used for cooperating with the internal threads, and the top end is provided with a second matching structure; a driving connecting rod is provided with a first driving structure and a second driving structure; the driving connecting rod is used for driving the safety stud to rotate into the safety hole through the second driving structure until the position of the first driving structure matches the first matching structure, so that the first driving structure cooperates with the first matching structure to drive the bolt body to rotate into the target threaded hole through the first driving structure and the first matching structure; the driving connecting rod is also used for canceling the cooperation between the first driving structure and the first matching structure after the bolt body rotates into the target threaded hole, and driving the safety stud to rotate to a position higher than the first matching structure through the second driving structure and the second matching structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-theft bolts, in particular, to an anti-theft bolt. In addition, the present application also relates to a traffic track comprising the anti-theft bolt. BACKGROUND

[0002] A bolt is a mechanical part, a cylindrical fastener with threads, used with a nut. It is a type of fastener consisting of a head and a shank (a cylindrical body with external threads), which is used in conjunction with a nut to secure two parts with a hole together. This connection form is called bolt connection.

[0003] The existing conventional bolt connection can be easily disassembled and installed by its commonly used tool, which is extremely uncontrollable in the management and safety of equipment such as railway and other traffic tracks, and the loss caused is immeasurable. Therefore, in order to prevent the bolt from being maliciously disassembled, an anti-theft bolt needs to be used. The anti-theft bolt in the prior art has a simple structure and a single anti-theft means, and usually changes the head structure to achieve anti-theft. Although this achieves the anti-theft function to some extent, it can still develop corresponding tools according to its characteristics to disassemble illegally, and the anti-theft effect is not obvious. In order to improve the anti-theft effect of the anti-theft bolt, such as the technical solution of a bolt anti-theft assembly disclosed in application No. 202410125877.7, the bolt anti-theft is achieved by setting a structure similar to a lock cylinder, but the internal structure is extremely complex, the processing efficiency and processing cost are high, and it is completely unable to adapt to large-scale application scenarios. On the other hand, since the anti-theft bolt is usually mainly applied to outdoor scenes such as traffic or building, and the existing technology has a large number of anti-theft bolt structures with a through hole structure similar to the driving groove of the above technical solution, when the driving piece used for unlocking and driving is separated from the product, the through hole / driving groove is exposed to the outside, which is easy to enter sundries and water, causing blockage or rust, damaging the internal structure, reducing the service life, and making it difficult to disassemble and maintain later. SUMMARY

[0004] The present application provides an anti-theft bolt and a traffic track to solve the technical problems of poor anti-theft effect, complex structure, and easy entry of sundries and water of the existing anti-theft bolt.

[0005] According to one aspect of the present application, an anti-theft bolt is provided, comprising:

[0006] A bolt body having a first external thread for cooperating with a target threaded hole, the bolt body being provided with a safety hole communicating to the top end of the bolt body, the safety hole being provided with an internal thread located between a first preset depth position and a second preset depth position and a first matching structure located on the hole wall, the second preset depth being deeper than the first preset depth, and the first matching structure being arranged at a depth deeper than the first preset depth;

[0007] A safety bolt, configured to cooperate with an inner thread of the safety hole, a top end of the safety bolt is provided with a second cooperating structure;

[0008] A driving link, provided with a first driving structure configured to cooperate with the first cooperating structure and a second driving structure configured to cooperate with the second cooperating structure;

[0009] The driving link is configured to drive the safety bolt into the safety hole via the second driving structure until a position of the first driving structure matches the first cooperating structure, and then the first driving structure cooperates with the first cooperating structure to drive the bolt body into or out of the target threaded hole via the first driving structure and the first cooperating structure.

[0010] The driving link is further configured to cancel the cooperation between the first driving structure and the first cooperating structure after the bolt body is driven into the target threaded hole, and then drive the safety bolt out via the second driving structure and the second cooperating structure to a position higher than the first cooperating structure.

[0011] As a further improvement of the above technical solution, the anti-theft bolt further comprises an elastic member, which is arranged between a bottom end of the safety bolt and a bottom of the safety hole, and is configured to be in a compressed state to provide a spring force in a direction out of the safety hole when the safety bolt is located at a position below a second preset depth of the safety hole, so that the second outer thread of the safety bolt cooperates with the inner thread of the safety hole.

[0012] As a further improvement of the above technical solution, the height difference between the second preset depth and the bottom of the safety hole is greater than the height of the safety bolt.

[0013] As a further improvement of the above technical solution, the two ends of the elastic member are respectively connected to the bottom end of the safety bolt and the bottom of the safety hole, and the elastic member is further configured to be in a stretched state to provide a spring force into the safety hole when the safety bolt is driven out of the inner thread of the safety hole, so that the safety bolt cannot be separated from the safety hole, and / or the diameter of the top end of the safety hole to the first preset depth is smaller than the large diameter of the inner thread.

[0014] As a further improvement of the above technical solution, the hole wall of the safety hole is provided with a plurality of first cooperating structures respectively located at different target depth positions and / or different circumferential positions, and the driving link is provided with a plurality of first driving structures, and the relative positions between each first driving structure match the relative positions between each first cooperating structure.

[0015] As a further improvement of the above technical solution, the bolt body and the driving connecting rod are respectively provided with a circumferential indication mark and / or a height indication mark, the circumferential indication mark is used for indicating the circumferential position of the first matching structure relative to the first driving structure, and the height indication mark is used for indicating the height position of the first matching structure relative to the first driving structure.

[0016] As a further improvement of the above technical solution, the first matching structure comprises a driving hole opened in the hole wall of the safety hole at a preset angle relative to the axial direction of the safety hole, the first driving structure comprises a driving member matched with the first matching structure, the driving member is arranged through the driving connecting rod, and the driving connecting rod is provided with a driving mechanism for driving the driving member to extend out of the driving connecting rod.

[0017] As a further improvement of the above technical solution, the driving connecting rod comprises a gear shaft arranged through the driving connecting rod, and the inner end of the driving member is provided with a rack for matching with the gear shaft; the driving connecting rod is provided with a third driving structure for driving the gear shaft to rotate, and the third driving structure is used for driving the gear shaft to rotate under external force so as to drive the driving member to extend out of the driving connecting rod or retract into the driving connecting rod.

[0018] As a further improvement of the above technical solution, the driving connecting rod is provided with an electric telescopic device connected to the driving member, which is used for driving the driving member to extend out of the driving connecting rod or retract into the driving connecting rod.

[0019] According to another aspect of the present application, there is also provided a traffic track comprising the above anti-theft bolt.

[0020] The present application has the following beneficial effects:

[0021] The security hole and the inner thread in the hole are processed to cooperate with the safety stud. When the security bolt is installed, the bolt body is inserted into the target threaded hole, the second driving structure and the second matching structure of the driving link are matched, the safety stud is rotated into the security hole through the driving link, the first matching structure is exposed, the first driving structure of the driving link is matched with the first matching structure, and the driving link can drive the bolt body to rotate and rotate into the target threaded hole to realize the locking of the bolt. After the bolt body is tightened, the matching between the first driving structure and the first matching structure can be cancelled, the driving link cannot drive the bolt body to rotate, the safety stud is driven out to the target position through the second driving structure of the driving link acting on the second matching structure, and the driving link can be removed to perform the above operation on other security bolts. After the above locking operation is completed, the first matching structure can be located below the top end of the safety stud, and the actual position of the first matching structure is difficult to obtain easily, so that a better anti-theft effect is achieved. Even if the safety stud is rotated out or rotated in using a disassembly tool, the bolt body cannot be disassembled under the condition that the first matching structure cannot be driven by force, forming double anti-theft insurance, greatly improving the anti-theft effect, and the bolt body can be driven out only when the first matching structure is matched with the first driving structure after the safety stud is rotated into the security hole through the second driving structure and the second matching structure. On the other hand, the first matching structure of each batch of products and / or each type of product can be arranged at different axial positions and / or different circumferential positions. In practical application, the mixed use of multiple batches of products can further improve the anti-theft effect, and each batch of products only needs to be correspondingly provided with one matched driving link, so that the relatively complex structure is arranged on the universal driving link, the structure of the bolt body and the safety stud is simplified, and the cost is greatly reduced. The overall structure of the security bolt is simplified, the number of parts is small, and only the safety stud and the bolt body are actually used after the installation is completed by the driving link, and the anti-theft effect is realized at low cost. On the other hand, the structure of the security bolt avoids the exposure of the security hole, the safety stud is in a high position after the driving link is separated, and the safety stud can prevent rainwater, foreign matters and the like from entering the security hole, avoid blocking and rusting and the like, and improve the service life.

[0022] In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings are intended to explain the present application and are not intended to limit the present application. In the drawings:

[0024] Figure 1 is a schematic diagram of the internal structure of the use state of the preferred embodiment of the present application;

[0025] Figure 2 is a structural schematic diagram of a driving link of a preferred embodiment of the present application;

[0026] Figure 3 is a structural schematic diagram of a bolt body of a preferred embodiment of the present application;

[0027] Figure 4 is a structural schematic diagram of a safety stud of a preferred embodiment of the present application;

[0028] Figure 5 is a structural schematic diagram of a driving link of a preferred embodiment of the present application;

[0029] Figure 6 is a structural schematic diagram of a driving link of a preferred embodiment of the present application; Figure 5 is an A-direction sectional view of

[0030] Figure 7 is a B-direction sectional view of Figure 5

[0031] Legend:

[0032] 1, driving link 101, first driving structure 1011, driving member 1012, gear shaft 102, second driving structure 2, bolt body 201, safety hole 202, first matching structure 203, internal thread 204, first external thread 205, centering structure 3, safety stud 301, second matching structure 302, second external thread 4, elastic member. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0034] Figure 1 is a structural schematic diagram of a driving link of a preferred embodiment of the present application; Figure 2 is a structural schematic diagram of a driving link of a preferred embodiment of the present application; Figure 3 is a structural schematic diagram of a bolt body of a preferred embodiment of the present application; Figure 4 is a structural schematic diagram of a safety stud of a preferred embodiment of the present application; Figure 5 is a structural schematic diagram of a driving link of a preferred embodiment of the present application; Figure 6 is an A-direction sectional view of Figure 5 Figure 7 is a B-direction sectional view of Figure 5

[0035] As shown in Figures 1 to 7 , the anti-theft bolt of the present embodiment comprises:

[0036] ​​​The bolt body 2 has a first external thread 204 for cooperating with a target threaded hole, and is provided with a safety hole 201 communicated to the top end of the bolt body 2, and the safety hole 201 is provided with an internal thread 203 located between a first preset depth position and a second preset depth position and a first matching structure 202 located on the hole wall, the second preset depth is deeper than the first preset depth, and the first matching structure 202 is arranged at a depth deeper than the first preset depth;

[0037] The safety stud 3 has a second external thread 302 for cooperating with the internal thread 203 of the safety hole 201, and the top end of the safety stud 3 is provided with a second matching structure 301;

[0038] The driving link 1 is provided with a first driving structure 101 for cooperating with the first matching structure 202 and a second driving structure 102 for cooperating with the second matching structure 301;

[0039] The driving link 1 is used to drive the safety stud 3 to rotate into the safety hole 201 through the second driving structure 102 until the position of the first driving structure 101 matches the first matching structure 202, so that the first driving structure 101 cooperates with the first matching structure 202 to drive the bolt body 2 to rotate into the target threaded hole or to rotate out of the target threaded hole through the first driving structure 101 and the first matching structure 202;

[0040] The driving link 1 is also used to cancel the cooperation between the first driving structure 101 and the first matching structure 202 after the bolt body 2 is rotated into the target threaded hole, and drive the safety stud 3 to rotate out through the second driving structure 102 and the second matching structure 301 to a position higher than the first matching structure 202.

[0041] The top end of the bolt body 2, i.e. the bolt head, is provided in a cylindrical or hemispherical shape that is not easy to rotate by external disassembly equipment, and the driving hole is also circular in shape. The first preset depth can be the depth of the top end of the safety hole 201 and below. The head of the driving link 1 is provided in a shape such as a hexagon to facilitate rotation by external tools, and a force applying rod, handle or other structure can also be provided radially on the head to facilitate rotation, and the specific driving mode and structure are not limited;

[0042] In order to effectively drive the bolt body 2 to rotate by the driving link 1, at least two first matching structures 202 with different circumferential positions should be provided, and the number and arrangement positions thereof can be adjusted according to actual needs to facilitate disassembly and improve the anti-theft effect. In another preferred embodiment, the hole wall of the safety hole 201 is provided with a plurality of first matching structures 202 located at different target depth positions and / or different circumferential positions, and the driving link 1 is provided with a plurality of first driving structures 101, and the relative positions between the first driving structures 101 match the relative positions between the first matching structures 202.

[0043] It can be understood that the anti-theft bolt is provided with a safety hole 201 and an inner thread 203 machined in the hole for cooperating with the safety stud 3. When installing the anti-theft bolt, the bolt body 2 is inserted into the target threaded hole, and after the second driving structure 102 of the driving link 1 and the second matching structure 301 are matched, the safety stud 3 is driven by the driving link 1 to be screwed into the safety hole 201, so that the first matching structure 202 is exposed. The first driving structure 101 of the driving link 1 cooperates with the first matching structure 202, so that the driving link 1 can drive the bolt body 2 to rotate and be screwed into the target threaded hole to achieve locking of the bolt. After the bolt body 2 is tightened, the cooperation between the first driving structure 101 and the first matching structure 202 can be cancelled, the driving link 1 cannot drive the bolt body 2 to rotate, and the safety stud 3 is driven by the second driving structure 102 of the driving link 1 to be screwed out to the target position. The driving link 1 can be removed to perform the above operation on other anti-theft bolts. After the above locking operation is completed, the first matching structure 202 can be located below the top end of the safety stud 3, and it is difficult to easily obtain the actual position of the first matching structure 202, thereby achieving a better anti-theft effect. Even if the safety stud 3 is screwed out or in using a disassembly tool, the bolt body 2 cannot be disassembled under the condition that the first matching structure 202 cannot be driven by force, forming a double anti-theft insurance, greatly improving the anti-theft effect. During disassembly, the first matching structure 202 and the first driving structure 101 can be correspondingly matched only after the safety stud 3 is screwed into the safety hole 201 by the second driving structure 102 and the second matching structure 301, so that the bolt body 2 can be driven out. On the other hand, the first matching structure 202 of each batch of products and / or each type of product can be arranged at different axial positions and / or different circumferential positions. In actual application, the mixed use of multiple batches of products can further improve the anti-theft effect, and each batch of products only needs to be correspondingly provided with one matching driving link 1, so that the relatively complex structure is arranged on the universal driving link 1, the structure of the bolt body 2 and the safety stud 3 is simplified, and the cost is greatly reduced. The overall structure of the anti-theft bolt is simplified, the number of parts is small, and only the safety stud 3 and the bolt body 2 are actually used after installation using the driving link 1, thereby achieving the anti-theft effect at low cost. On the other hand, the structure of the anti-theft bolt avoids exposure of the safety hole 201. After the driving link 1 is separated, the safety stud 3 is in a high position, which can prevent rainwater, foreign matter, etc. from entering the safety hole 201, avoid blockage, rust, etc., and improve the service life.

[0044] In an embodiment, the second preset depth and the height difference between the bottom of the safety hole 201 are greater than the height of the safety bolt, the safety bolt 3 can be screwed into the bottom of the safety hole 201, the hole diameter between the bottom of the safety hole 201 and the internal thread 203 should be greater than the large diameter of the internal thread 203, which can avoid the difficulty in machining the internal thread 203 of the safety hole 201 and the difficulty in screwing the safety bolt 3 into the bottom; it should be understood that in some embodiments, the bottom end of the bolt body 2 is in communication with the safety hole 201 so as to be fitted with the safety bolt 3, which is more efficient in production and assembly and low in cost; the embodiment shown is a technical solution in which the bottom end is not communicated;

[0045] Further, the anti-theft bolt further comprises an elastic member 4, which is arranged between the bottom end of the safety bolt 3 and the bottom of the safety hole 201, and is used to be in a compressed state to provide an elastic force outward of the safety hole 201 when the safety bolt 3 is located at a position below the second preset depth of the safety hole 201, so as to make the second external thread 302 of the safety bolt 3 cooperate with the internal thread 203 of the safety hole 201; even if the safety bolt 3 is screwed to the bottom of the safety hole 201, it can still cooperate with the internal thread 203 under the action of the elastic member 4, and provide an outward force in the initial stage of being unscrewed by the driving link 1.

[0046] In some embodiments, the elastic member 4 can also be a spring, and the above-mentioned embodiment is provided with a centering structure 205 at the bottom of the safety hole 201, which is a conical protrusion or a conical groove or a circular table type protrusion or a circular table type groove, so as to center the spring and ensure that it effectively acts on the safety bolt 3.

[0047] In some embodiments, the elastic member 4 can also be a spring, and the above-mentioned embodiment is provided with a centering structure 205 at the bottom of the safety hole 201, which is a conical protrusion or a conical groove or a circular table type protrusion or a circular table type groove, so as to center the spring and ensure that it effectively acts on the safety bolt 3.

[0048] In an embodiment, the bolt body 2 and the driving link 1 are respectively provided with a circumferential indication mark and / or a height indication mark (not shown in the drawings), the circumferential indication mark is used to indicate the circumferential position of the first matching structure 202 relative to the first driving structure 101, and the height indication mark is used to indicate the height position of the first matching structure 202 relative to the first driving structure 101; the position of the circumferential indication mark does not need to correspond to the position of the first matching structure 202, as long as the circumferential indication mark of the driving link 1 and the circumferential indication mark on the bolt body 2 correspond when the circumferential positions of the first driving structure 101 and the first matching structure 202 match, the purpose of indicating the circumferential position is achieved, which is convenient for operation; similarly, the side wall of the driving link 1 can be provided with a height indication mark, and the top end face of the bolt body 2 serves as the height indication mark to indicate whether the height positions correspond.

[0049] Preferably, the matching part inside the anti-theft bolt is set to reach the matching depth of the first matching structure 202 and the first driving structure 101 after the security stud 3 is screwed inward to disengage the internal thread 203, at which time it is more convenient to adjust the circumferential position and axial (depth) position of the driving link 1, which can be more easily pushed inward and more easily rotated circumferentially in order to adjust the alignment of the first driving structure 101 and the first matching structure 202, thereby improving the disassembly and assembly efficiency.

[0050] In an embodiment, the driving link 1 and the bolt body 2 are respectively provided with a model mark, in the case that the first matching structure 202 of the bolt body 2 is different in arrangement scheme in different batches and / or models, the model mark can quickly correspond to the driving link 1 used by the bolt body 2, which is convenient for operation and improves the disassembly and assembly efficiency of later maintenance.

[0051] It should be understood that the second matching structure 301 can be a groove provided at the top end of the security stud 3, and the second driving structure 102 is a protrusion provided at the bottom end of the driving link 1, or the second matching structure 301 can be a protrusion provided at the top end of the security stud 3, and the second driving structure 102 is a groove provided at the bottom end of the driving link 1; the grooves and protrusions of anti-theft bolts of different models and / or different batches can be correspondingly provided in different shapes, such as regular polygons, irregular polygons, etc.; on the other hand, the shape of the second matching structure 301 can be used as a model mark, the shapes of the second matching structures 301 of different models and / or different batches are different, which can quickly match the driving link 1 of the corresponding model, the structure is simplified, and the disassembly and assembly efficiency is improved.

[0052] In an embodiment, the first matching structure 202 comprises a driving hole arranged on the hole wall of the safety hole 201 at a preset angle with respect to the axial direction of the safety hole 201, and the first driving structure 101 comprises a driving member 1011 matched with the first matching structure 202, the driving member 1011 is arranged through the driving link 1, and the driving link 1 is provided with a driving mechanism for driving the driving member 1011 to extend out of the driving link 1. It can be understood that the cross-sectional shape of the driving hole can be matched and arranged as required, which can be regular or irregular, and the driving member 1011 is matched with the shape. In addition, the driving hole can be arranged at a certain position with respect to the axial direction of the bolt body 2, or can be arranged offset with respect to the radial direction, so as to improve the anti-theft effect. In the preferred embodiment, the driving hole is a circular hole arranged along the radial direction of the bolt body 2. At this time, the driving member 1011 is a circular driving pin arranged along the radial direction of the driving link 1.

[0053] In some embodiments, annular grooves are arranged on the inner wall of the safety hole 201 at positions corresponding to the axial directions of the driving holes, which are not shown in the drawings. The height of the annular grooves is greater than or equal to the hole diameter of the driving holes at the corresponding positions. By arranging the annular grooves, in the case that the safety bolt 3 is screwed into the bottom of the safety hole 201 or taken out, only the annular grooves can be observed, and the circumferential position and even the hole diameter of each driving hole cannot be directly obtained, thereby significantly improving the anti-theft effect.

[0054] In some embodiments, the driving mechanism comprises a gear shaft 1012 arranged through the driving link 1, and the inner end of the driving member 1011 is provided with a rack for cooperating with the gear shaft 1012. The driving link 1 is provided with a third driving structure for driving the gear shaft 1012 to rotate, so as to drive the driving member 1011 to extend out of the driving link 1 or retract into the driving link 1.

[0055] In some embodiments, the driving link 1 is provided with an electric telescopic device connected to the driving member 1011, for driving the driving member 1011 to extend out of the driving link 1 or retract into the driving link 1. The driving link 1 is a universal part of the anti-theft bolts of the same model and / or the same batch. The electric driving form does not significantly increase the cost, but can make the operation more convenient.

[0056] Further, the driving mechanism further comprises a reset spring arranged at the bottom end of the driving member 1011 and connected to the inside of the driving link 1, or a reset spring arranged on the gear shaft 1012. Under the action of the reset spring, the driving member 1011 remains in the extended state. Before the safety bolt 3 is screwed in, the driving member 1011 is driven by the driving mechanism in the driving link 1. When the driving link 1 reaches the corresponding position, the driving member 1011 extends under the action of the spring, which is more convenient to operate.

[0057] In order to further simplify the operation, the top end of the safety hole 201 is provided with a tapered guide portion, the hole diameter of the tapered guide portion gradually decreases from outside to inside to the hole diameter of the safety hole 201; the maximum radius of the tapered guide portion is greater than or equal to the distance from the end of the driving member 1011 to the axis of the driving link 1 in the extended state, that is, when the driving link 1 is screwed in, the tapered guide portion acts on the driving member 1011 to make it retract into the driving link 1, reducing the steps of operating the driving member 1011, and the operation is more convenient.

[0058] In another aspect, a traffic track is also provided, which is applied with the anti-theft bolt.

[0059] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A theft-proof bolt characterized by comprising: The anti-theft bolt comprises: a bolt body (2) having a first external thread (204) for cooperating with a target threaded hole, the bolt body (2) being provided with a safety hole (201) communicating to the top end of the bolt body (2), the safety hole (201) being provided with an internal thread (203) located between a first preset depth position and a second preset depth position and a first matching structure (202) located on the hole wall, the second preset depth being deeper than the first preset depth, the first matching structure (202) being arranged at a depth deeper than the first preset depth; a safety stud (3) for cooperating with the internal thread (203) of the safety hole (201), the top end of the safety stud (3) being provided with a second matching structure (301); a driving link (1) provided with a first driving structure (101) for cooperating with the first matching structure (202) and a second driving structure (102) for cooperating with the second matching structure (301); the driving link (1) is used to drive the safety stud (3) to rotate into the safety hole (201) through the second driving structure (102) until the position of the first driving structure (101) matches the first matching structure (202), so that the first driving structure (101) cooperates with the first matching structure (202) to drive the bolt body (2) to rotate into the target threaded hole or drive the bolt body (2) to rotate out of the target threaded hole through the first driving structure (101) and the first matching structure (202); the driving link (1) is also used to cancel the cooperation between the first driving structure (101) and the first matching structure (202) after the bolt body (2) rotates into the target threaded hole, and drive the safety stud (3) to rotate out through the second driving structure (102) and the second matching structure (301) to a position higher than the first matching structure (202); the anti-theft bolt further comprises a resilient member (4) arranged between the bottom end of the safety stud (3) and the bottom of the safety hole (201), the resilient member (4) being used to provide a spring force outward of the safety hole (201) when the safety stud (3) is located at a position below the second preset depth of the safety hole (201) to make the second external thread (302) of the safety stud (3) cooperate with the internal thread (203) of the safety hole (201), the two ends of the resilient member (4) being connected to the bottom end of the safety stud (3) and the bottom of the safety hole (201) respectively, the resilient member (4) being also used to provide a spring force into the safety hole (201) when the safety stud (3) rotates out of the internal thread (203) of the safety hole (201) to make the safety stud (3) unable to be separated from the safety hole (201), and / or the diameter of the top end of the safety hole (201) to the first preset depth part is smaller than the large diameter of the internal thread (203). The first matching structure (202) comprises a driving hole opened in the hole wall of the safety hole (201) at a preset angle with respect to the axial direction of the safety hole (201), and the first driving structure (101) comprises a driving member (1011) matched with the first matching structure (202), the driving member (1011) is arranged in the driving link (1), and the driving link (1) is provided with a driving mechanism for driving the driving member (1011) to extend out of the driving link (1).

2. The security bolt according to claim 1, wherein The second preset depth and the height difference between the bottom of the safety hole (201) and the height of the safety stud (3) are greater than the height of the safety stud (3).

3. The security bolt according to claim 1, wherein The hole wall of the safety hole (201) is provided with a plurality of first matching structures (202) respectively located at different target depth positions and / or different circumferential positions, and the driving link (1) is provided with a plurality of first driving structures (101), and the relative positions of the first driving structures (101) match the relative positions of the first matching structures (202).

4. The security bolt according to claim 1, wherein The bolt body (2) and the driving link (1) are respectively provided with circumferential indication marks and / or height indication marks, the circumferential indication marks are used for indicating the circumferential positions of the first matching structures (202) relative to the first driving structures (101), and the height indication marks are used for indicating the height positions of the first matching structures (202) relative to the first driving structures (101).

5. The security bolt according to claim 1, wherein The driving link (1) comprises a gear shaft (1012) arranged in the driving link (1), and the inner end of the driving member (1011) is provided with a rack matched with the gear shaft (1012); the driving link (1) is provided with a third driving structure for driving the gear shaft (1012) to rotate, and the third driving structure is used for driving the gear shaft (1012) to rotate under the action of external force, so as to drive the driving member (1011) to extend out of the driving link (1) or retract into the driving link (1).

6. The security bolt according to claim 1, wherein The driving link (1) is provided with an electric telescopic device connected to the driving member (1011) for driving the driving member (1011) to extend out of the driving link (1) or retract into the driving link (1).

7. A traffic track, characterized in that The application has the right to claim 1-6 any one of the anti-theft bolts.

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