Safe anti-theft bolt

Abstract

The invention relates to the technical field of bolts, in particular to a safety type anti-theft bolt. The problem that an anti-theft bolt of a special structure is easily damaged by external force and is forcibly unlocked is solved. Comprising a bolt column, and a rotating column is rotationally connected to the bolt column in a limiting mode; the sliding shell is connected to the rotating column in a sliding mode, a first spring is arranged between the sliding shell and the bolt column, the rotating column is connected with a sliding disc in a limiting and sliding mode, a second spring is arranged between the sliding disc and the rotating column, and two notches are formed in the sliding disc; the upper portion of the bolt column is slidably connected with a plurality of extrusion rods. Through synchronous rotation of the rotating column and the sliding disc and cooperation of the extrusion rod and the notch, the bolt column cannot be rotated under the condition that the extrusion rod is incorrectly selected or the moving distance is wrong, only special parts can be used for disassembling the device, the possibility that the device is forcibly unlocked is reduced, and the safety of the device is improved.

Description

Technical Field

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

[0002] An anti-theft bolt is a security fastener designed to prevent unauthorized disassembly. By setting a specially designed groove or locking mechanism on its structure, the disassembly operation can only be completed using a specially manufactured wrench or other specific tools, thereby achieving the purpose of anti-theft. The anti-theft bolts currently on the market still have several shortcomings in practical applications: First, when facing experienced thieves, thieves will use general tools such as pliers and screwdrivers to force the bolts into the special grooves, and destroy the surface structure of the bolts by applying external force to complete the disassembly. This method not only damages the integrity of the bolts, but also greatly reduces the safety of the entire device. Secondly, if mud and sand enter the grooves of the special structure, it will significantly increase the difficulty of disassembly. Even legal operators will find it difficult to use special wrenches to perform disassembly. Thirdly, for anti-theft bolts that rely on a single physical shape matching as their main anti-theft means, imitations or cracking methods are prone to appear on the market, weakening the anti-theft effect of this type of product. Summary of the invention

[0003] Aiming at the problem that the anti-theft bolt with special structure is easily damaged by external force and forced to be unlocked, the present invention provides a safe anti-theft bolt.

[0004] The technical solution is: a safety anti-theft bolt, comprising: a bolt column, the bolt column is rotatably connected with a rotating column in an upper limit position; a sliding shell, slidably connected to the rotating column, a first spring is arranged between the sliding shell and the bolt column, the rotating column is slidably connected with a sliding disk in a limited position, a second spring is arranged between the sliding disk and the rotating column, the sliding disk is provided with two notches, the upper part of the bolt column is slidably connected with a plurality of extrusion rods, the extrusion rods are used to squeeze the sliding disk, and the extrusion rods drive the sliding disk to rotate by inserting into the notches; a connecting shell is arranged above the sliding shell, the connecting shell is provided with a groove and two support plates, the groove of the connecting shell and the rotating column are mutually embedded; an unlocking mechanism is arranged on the sliding shell, and is used to control the movement of the plurality of extrusion rods; an exhaust mechanism is arranged on the sliding shell, and is used to control the flow of gas in the sliding shell.

[0005] As a preferred embodiment of the present invention, a pressing inclined surface is provided on a side of the pressing rod close to the sliding plate, and the pressing inclined surface of the pressing rod is used to push the sliding plate to move downward.

[0006] As a preferred embodiment of the present invention, the unlocking mechanism includes: a plurality of sliding bent plates, all of which are slidably connected to the four sides of the sliding shell, a first tension spring is fixedly connected between the sliding bent plate and the sliding shell, a fixed block is fixedly connected to the sliding bent plate, a first inclined surface is provided on the side of the fixed block close to the rotating column, the first inclined surface of the fixed block is used to push the extrusion rod to move, and a third spring is fixedly connected between the extrusion rod and the bolt column; an auxiliary positioning assembly is arranged in the sliding shell, and is used to align the fixed block with the adjacent extrusion rod.

[0007] As a preferred embodiment of the present invention, the notch is provided with a second inclined surface, which is used to enable the single extrusion rod to control the bolt column to rotate in only one direction.

[0008] As a preferred embodiment of the present invention, an irregular protrusion is provided on the upper side of the rotating column for locating the position of the sliding bent plate corresponding to the notch.

[0009] As a preferred embodiment of the present invention, the auxiliary positioning assembly includes: a fixing ring fixed in the sliding shell, the fixing ring is fixed with a plurality of protrusions, the upper end of the bolt column is provided with a plurality of grooves, and the protrusions fix the relative positions of the sliding shell and the bolt column through the grooves at the upper end of the bolt column.

[0010] As a preferred embodiment of the present invention, the groove at the upper end of the bolt column is provided with two third inclined surfaces for assisting the positioning of the fixing block and the adjacent extrusion rod.

[0011] As a preferred embodiment of the present invention, the exhaust mechanism includes: an annular plate fixed to the sliding shell, the annular plate is slidably connected to the bolt column, an inclined surface is provided on the upper side of the annular plate, and a plurality of air vents are provided around the sliding shell, and the air vents are used to allow gas to enter the sliding shell and discharge accumulated water.

[0012] As a preferred embodiment of the present invention, it also includes: a locking mechanism, an inverted T-shaped hole is provided in the bolt column, and the locking mechanism is provided in the T-shaped hole of the bolt column to prevent the bolt column from being destructively unlocked, and the locking mechanism includes: two sliding plates, slidably connected in the T-shaped hole of the bolt column, two films are provided in the T-shaped hole of the bolt column, and glue is stored between the films and the adjacent sliding plates; a connecting plate, slidably connected in the T-shaped hole of the bolt column, the connecting plate is hinged with two connecting rods, and the connecting rods are hinged to the adjacent sliding plates; a destruction detection component, provided in the T-shaped hole of the bolt column, for detecting whether the bolt column is cut off.

[0013] As a preferred embodiment of the present invention, the damage detection assembly includes: a sliding column, slidably connected in the T-shaped hole of the bolt column, a second tension spring fixedly connected between the sliding column and the bolt column, a pull rope fixedly connected to the sliding column, and the pull rope fixedly connected to the upper part of the bolt column.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention, through the synchronous rotation of the rotating column and the sliding disk, combined with the cooperation of the extrusion rod and the notch, makes it impossible to rotate the bolt column when the extrusion rod is incorrectly selected or the moving distance is wrong. Only special parts can be used to disassemble the device, which reduces the possibility of the device being forcibly unlocked and increases the safety of the device.

[0015] 2. The present invention makes it more difficult for illegal personnel to dismantle the device by synchronously rotating the sliding bent plate and the sliding shell in the unlocking mechanism so that the position of the extrusion rod corresponding to the notch is constantly changed.

[0016] 3. The present invention makes the annular plate in the air extraction mechanism rotate synchronously with the sliding shell, so that the gas in the sliding shell flows, shortens the time that rainwater contacts the parts in the device, and reduces the probability of rust on the parts in the device.

[0017] 4. The present invention seals glue through the sliding plate and the film in the locking mechanism, so that the bolt column is bonded to the threaded hole when it is cut, thereby reducing the possibility of destructive disassembly of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a cross-sectional view of the parts of the sliding shell and the connecting shell of the present invention; Figure 3 An exploded view of the structure at the bolt column of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the fixing ring and the protrusion parts of the present invention; Figure 5 It is a cross-sectional view of parts at the bolt column and the sliding plate of the present invention; Figure 6 It is a cross-sectional view of the parts of the sliding disk and the extrusion rod of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the parts at the connecting plate and the sliding column of the present invention.

[0019] Figure numbers: 1-bolt column, 2-rotating column, 3-sliding shell, 4-sliding disk, 5-extrusion rod, 6-notch, 7-connecting shell, 21-sliding bent plate, 22-fixing block, 31-fixing ring, 32-bump, 41-annular plate, 42-vent, 51-sliding plate, 52-film, 53-connecting plate, 54-connecting rod, 61-sliding column, 62-pull rope. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 -Attached Figure 7 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Example 1: During the operation of the existing anti-theft bolts with special structures, legal personnel are required to use special wrenches to disassemble them. However, illegal personnel can use general tools such as pliers and screwdrivers to force them into the special grooves of the bolts, destroy the surface structure of the bolts by applying external force, and then complete the disassembly. This method not only damages the integrity of the bolts, but also greatly reduces the safety of the entire device.

[0022] A safe anti-theft bolt, please refer to the attached Figure 1 -Attached Figure 6 As shown, it includes: a bolt column 1, which is connected to a rotating column 2 in an upper limit rotation; a sliding shell 3, which is slidably connected to the rotating column 2, a first spring is arranged between the sliding shell 3 and the bolt column 1, a sliding disk 4 is connected to the rotating column 2 in a limited sliding manner, a second spring is arranged between the sliding disk 4 and the rotating column 2, and two notches 6 are arranged on the sliding disk 4, and a plurality of extrusion rods 5 are slidably connected to the upper part of the bolt column 1, and the extrusion rods 5 are used to squeeze the sliding disk 4, and the extrusion rods 5 drive the sliding disk 4 to rotate by inserting into the notches 6; a connecting shell 7, which is arranged above the sliding shell 3, and a groove and two support plates are arranged on the connecting shell 7, and the groove of the connecting shell 7 is engaged with the rotating column 2; an unlocking mechanism, which is arranged on the sliding shell 3, and is used to control the movement of the plurality of extrusion rods 5; an exhaust mechanism, which is arranged on the sliding shell 3, and is used to control the flow of gas in the sliding shell 3, and the extrusion rods 5 A squeezing slope is provided on the side close to the sliding disk 4, and the squeezing slope of the squeezing rod 5 is used to push the sliding disk 4 to move downward. The unlocking mechanism includes: a plurality of sliding bent plates 21, which are all slidably connected to the four sides of the sliding shell 3, a first tension spring is fixedly connected between the sliding bent plate 21 and the sliding shell 3, a fixed block 22 is fixedly connected to the sliding bent plate 21, a first slope is provided on the side of the fixed block 22 close to the rotating column 2, the first slope of the fixed block 22 is used to push the squeezing rod 5 to move, and a third spring is fixedly connected between the squeezing rod 5 and the bolt column 1; an auxiliary positioning component is provided in the sliding shell 3, which is used to align the fixed block 22 with the adjacent squeezing rod 5, the notch 6 is provided with a second slope, which is used to enable a single squeezing rod 5 to only control the one-way rotation of the bolt column 1, and an irregular protrusion is provided on the upper side of the rotating column 2, which is used to locate the position of the sliding bent plate 21 corresponding to the notch 6.

[0023] In the above scheme, the problem that the anti-theft bolts are easily forcibly stuck by universal tools such as pliers and screwdrivers and illegally disassembled is solved; the device is equipped with a special connecting shell 7, and legal personnel can freely install or disassemble the device by using a universal wrench in combination with the connecting shell 7. The number of extrusion rods 5 and sliding bent plates 21 in the device is the same, and the number of extrusion rods 5 and sliding bent plates 21 can be changed according to the actual size of the bolts. The number of extrusion rods 5 and sliding bent plates 21 in the device is six, and the second inclined surfaces of the two notches 6 on the sliding disk 4 are mirror-imaged, and the sliding plate 4 is notched. The positions of the two notches 6 on the disk 4 can be randomly changed according to needs. The two notches 6 can face the two extrusion rods 5 at the same time. Taking the leftmost fixed block 22 as an example, fixed inclined surfaces are provided on both the front and rear sides of the fixed block 22. The spacing between the two fixed inclined surfaces in front and behind the fixed block 22 gradually decreases from left to right. The first inclined surface at the fixed block 22 is inclined to the left from top to bottom. The spacing between the extrusion inclined surfaces of the six extrusion rods 5 gradually increases from top to bottom. The facing ends of the six extrusion rods 5 are L-shaped, and the shape of the groove in the connecting shell 7 is the same as the shape of the irregular protrusion on the rotating column 2.

[0024] Working process: When the device needs to be installed into the threaded hole, the operator needs to buckle the connecting shell 7 onto the sliding shell 3 first, so that the groove in the connecting shell 7 is aligned with the irregular protrusion on the rotating column 2. At this time, the two sliding bent plates 21 corresponding to the connecting shell 7 correspond to the two notches 6 one by one, and then the connecting shell 7 is pressed downward, and the two support plates of the connecting shell 7 push the sliding shell 3 downward through the sliding bent plates 21. The sliding shell 3 compresses the first spring connected to it, and the sliding shell 3 is positioned through the auxiliary positioning assembly. The fixed block 22 is aligned with the adjacent extrusion rod 5. At this time, the sliding shell 3 stops moving and Relatively fixed with the bolt column 1, when the sliding shell 3 stops moving, the connecting shell 7 pushes the corresponding two sliding bent plates 21 to move downward, the sliding bent plates 21 move downward relative to the sliding shell 3 and stretch the first tension spring connected thereto, the sliding bent plates 21 drive the fixed block 22 to move synchronously, the first inclined surface of the fixed block 22 pushes the corresponding extrusion rod 5 to move into the bolt column 1, the extrusion rod 5 compresses the third spring connected thereto, when the connecting shell 7 just fits against the sliding shell 3 and stops moving, the extrusion rod 5 enters the notch 6 corresponding to the sliding disk 4, at which time the extrusion inclined surface of the extrusion rod 5 does not produce any extrusion on the sliding disk 4.

[0025] When the bolt column 1 is screwed in place, the bolt column 1 is rotated by the operator through the wrench, and the bolt column 1 is driven to rotate by the rotating column 2, the sliding plate 4, the notch 6 and the extrusion rod 5, so as to complete the operation of screwing the device out of the bolt hole.

[0026] When an illegal person attempts to unscrew the device out of the threaded hole, the rotating column 2 does not drive the bolt column 1 to rotate. If the two moving sliding bent plates 21 are not in the right position, or the two fixed blocks 22 push the two extrusion rods 5 to move an incorrect distance, or the extrusion rods 5 are not inserted into the two notches 6 at the same time, the extrusion inclined surface of the extrusion rod 5 will push the sliding disk 4 to move downward, and the sliding disk 4 will compress the second spring connected to it, resulting in the rotating column 2 being unable to drive the bolt column 1 to rotate synchronously when the rotating column 2 and the sliding shell 3 rotate. A single extrusion rod 5 can only drive the bolt column 1 to rotate in one direction through the corresponding notch 6. The two extrusion rods 5 drive the bolt column 1 to rotate in opposite directions, and the extension distance of the sliding bent plates 21 of the two corresponding notches 6 remains unchanged during the process of using the connecting shell 7 to rotate the bolt column 1, further increasing the difficulty for illegal persons to try to unlock the device.

[0027] Please refer to the attached Figure 2 -Attached Figure 5 As shown, the auxiliary positioning component includes: a fixing ring 31, which is fixed in the sliding shell 3, and a plurality of protrusions 32 are fixed to the fixing ring 31. A plurality of grooves are provided at the upper end of the bolt column 1. The protrusions 32 fix the relative positions of the sliding shell 3 and the bolt column 1 through the grooves at the upper end of the bolt column 1. The grooves at the upper end of the bolt column 1 are provided with two third inclined surfaces for assisting the positioning of the fixing block 22 and the adjacent extrusion rod 5.

[0028] In the above scheme, it is intended that when the operator installs the connecting shell 7, the fixing block 22 is aligned with the adjacent extrusion rod 5; the volume of the protrusion 32 is smaller than the volume of the groove at the upper end of the bolt column 1, the area of ​​the lowermost side of the protrusion 32 is equal to the area of ​​the bottom surface of the groove at the upper end of the bolt column 1, the elastic coefficient of the first spring connected to the sliding shell 3 is smaller than the elastic coefficient of the first tension spring connected to the sliding bent plate 21, and the spacing between the fixing block 22 and the adjacent extrusion rod 5 is greater than the spacing between the protrusion 32 and the groove at the upper end of the bolt column 1, so that after the protrusion 32 is matched with the groove at the upper end of the bolt column 1, the fixing block 22 then squeezes the adjacent extrusion rod 5; in the process of the connecting shell 7 pushing the sliding shell 3 to move downward, the fixing ring 31 drives the protrusion 32 to enter the groove under the guidance of the third inclined surface of the groove at the upper end of the bolt column 1, and the lower side surface of the protrusion 32 fits with the bottom surface of the groove at the upper end of the bolt column 1, so that the fixing block 22 is aligned with the adjacent extrusion rod 5. When the operator rotates the sliding shell 3, it can be judged whether the fixing block 22 is aligned with the adjacent extrusion rod 5 based on the resistance of the protrusion 32 and the groove at the upper end of the bolt column 1, which is convenient for the operator to adjust the position of the sliding shell 3.

[0029] Please refer to the attached Figure 2 -Attached Figure 4 As shown, the air extraction mechanism includes: an annular plate 41, which is fixed to the sliding shell 3, and the annular plate 41 is slidably connected to the bolt column 1. An inclined surface is arranged on the upper side of the annular plate 41, and a plurality of air vents 42 are arranged around the sliding shell 3. The air vents 42 are used to allow gas to enter the sliding shell 3 and discharge accumulated water.

[0030] In the above scheme, the problem that long-term retention of rainwater may cause corrosion of parts is solved; rainwater entering the sliding shell 3 is guided by the inclined surface of the annular plate 41 and discharged from the device through the vent 42. At the same time, the sliding shell 3 drives the annular plate 41 to move, so that a piston-like structure is formed in the sliding shell 3, so that gas enters or is discharged from the sliding shell 3 through the vent 42. The first spring connected to the sliding shell 3 resets the sliding shell 3 after moving, so that the rainwater entering the sliding shell 3 evaporates or is discharged, thereby reducing the time when the device contacts rainwater and extending the service life of the parts in the device.

[0031] Example 2: Based on Example 1, please refer to the attached Figure 1 -Attached Figure 5 and attached Figure 7As shown, it also includes: a locking mechanism, an inverted T-shaped hole is provided in the bolt column 1, the locking mechanism is provided in the T-shaped hole of the bolt column 1, and is used to prevent the bolt column 1 from being destructively unlocked, the locking mechanism includes: two sliding plates 51, which are slidably connected to the T-shaped hole of the bolt column 1, and two films 52 are provided in the T-shaped hole of the bolt column 1, and glue is stored between the films 52 and the adjacent sliding plates 51; a connecting plate 53, which is slidably connected to the T-shaped hole of the bolt column 1, and the connecting plate 53 is hinged to two connecting rods 54, and the connecting rods 54 are hinged to the adjacent sliding plates 51; a destruction detection component, which is provided in the T-shaped hole of the bolt column 1, and is used to detect whether the bolt column 1 is cut off, and the destruction detection component includes: a sliding column 61, which is slidably connected to the T-shaped hole of the bolt column 1, and a second tension spring is fixedly connected between the sliding column 61 and the bolt column 1, and a pull rope 62 is fixedly connected to the sliding column 61, and the pull rope 62 is fixedly connected to the upper part of the bolt column 1.

[0032] In the above scheme, it is intended to solve the problem that illegal persons may cut off the bolt head of the anti-theft bolt and re-weld a handle to illegally dismantle the bolt; initially, the second tension spring connected to the sliding column 61 is in a stretched and stored state, the pull rope 62 is a hard pull rope 62, the length of the pull rope 62 is not changed by the change of tension, and the film 52 is a heat-sealed film, and the film 52 is used to ensure that the glue between it and the adjacent sliding plate 51 does not solidify.

[0033] Working process: when an illegal person cuts off the upper part of the bolt column 1, the pull rope 62 is cut off synchronously with the bolt column 1, and the sliding column 61 moves downward under the tension of the second tension spring connected thereto, and the sliding column 61 pushes the connecting plate 53 to move downward, and the connecting plate 53 uses two connecting rods 54 to make the two sliding plates 51 move away from each other, and the sliding plate 51 pushes the glue out of the T-shaped hole of the bolt column 1, and the glue breaks through the film 52 and flows into the T-shaped hole of the bolt column 1, and solidifies between the bolt column 1 and the threaded hole, so that after the bolt column 1 is cut off, the bolt column 1 still cannot be taken out from the threaded hole, thereby enhancing the anti-theft effect of the device and reducing the possibility of illegal persons disassembling the device.

[0034] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. As long as they do not deviate from the structure of the invention or exceed the protection scope of the present invention, they should fall within the protection scope of the present invention.

Claims

1. A safety anti-theft bolt, characterized in that: include: A bolt column (1), wherein the bolt column (1) is rotatably connected to an upper limit position with a rotating column (2); A sliding shell (3) is slidably connected to the rotating column (2); a first spring is arranged between the sliding shell (3) and the bolt column (1); a sliding disk (4) is limitedly slidably connected to the rotating column (2); a second spring is arranged between the sliding disk (4) and the rotating column (2); two notches (6) are arranged on the sliding disk (4); a plurality of extrusion rods (5) are slidably connected to the upper part of the bolt column (1); the extrusion rods (5) are used to squeeze the sliding disk (4); and the extrusion rods (5) drive the sliding disk (4) to rotate by being inserted into the notches (6); A connecting shell (7) is arranged above the sliding shell (3), the connecting shell (7) being provided with a groove and two support plates, the groove of the connecting shell (7) being engaged with the rotating column (2); An unlocking mechanism, arranged on the sliding shell (3) and used for controlling the movement of the plurality of squeezing rods (5); An air extraction mechanism is arranged on the sliding shell (3) and is used to control the flow of gas in the sliding shell (3).

2. A safety anti-theft bolt according to claim 1, characterized in that: A pressing inclined surface is provided on one side of the pressing rod (5) close to the sliding plate (4), and the pressing inclined surface of the pressing rod (5) is used to push the sliding plate (4) to move downward.

3. A safety anti-theft bolt according to claim 2, characterized in that: The unlocking mechanism comprises: A plurality of sliding bent plates (21) are all slidably connected to the four sides of the sliding shell (3); a first tension spring is fixedly connected between the sliding bent plate (21) and the sliding shell (3); a fixed block (22) is fixedly connected to the sliding bent plate (21); a first inclined surface is provided on a side of the fixed block (22) close to the rotating column (2); the first inclined surface of the fixed block (22) is used to push the extrusion rod (5) to move; and a third spring is fixedly connected between the extrusion rod (5) and the bolt column (1); An auxiliary positioning assembly is arranged in the sliding shell (3) and is used to align the fixing block (22) with the adjacent extrusion rod (5).

4. A safety anti-theft bolt according to claim 3, characterized in that: The notch (6) is provided with a second inclined surface, which is used to enable a single extrusion rod (5) to control the bolt column (1) to rotate in only one direction.

5. A safety anti-theft bolt according to claim 3, characterized in that: An irregular protrusion is provided on the upper side of the rotating column (2) for locating the position of the sliding curved plate (21) corresponding to the notch (6).

6. A safety anti-theft bolt according to claim 3, characterized in that: The auxiliary positioning component comprises: A fixing ring (31) is fixedly connected inside the sliding shell (3), and a plurality of protrusions (32) are fixedly connected to the fixing ring (31). A plurality of grooves are provided at the upper end of the bolt column (1), and the protrusions (32) fix the relative positions of the sliding shell (3) and the bolt column (1) through the grooves at the upper end of the bolt column (1).

7. A safety anti-theft bolt according to claim 6, characterized in that: The groove at the upper end of the bolt column (1) is provided with two third inclined surfaces for assisting the positioning of the fixing block (22) and the adjacent extrusion rod (5).

8. A safety anti-theft bolt according to claim 7, characterized in that: The air extraction mechanism comprises: An annular plate (41) is fixedly connected to the sliding shell (3). The annular plate (41) is slidably connected to the bolt column (1). An inclined surface is provided on the upper side of the annular plate (41). A plurality of vents (42) are provided around the sliding shell (3). The vents (42) are used to allow gas to enter the sliding shell (3) and discharge accumulated water.

9. A safety anti-theft bolt according to claim 8, characterized in that: Also includes: A locking mechanism, wherein an inverted T-shaped hole is provided in the bolt column (1), and the locking mechanism is arranged in the T-shaped hole of the bolt column (1) to prevent the bolt column (1) from being destructively unlocked, and the locking mechanism comprises: Two sliding plates (51) are slidably connected to the T-shaped hole of the bolt column (1); two films (52) are arranged in the T-shaped hole of the bolt column (1); glue is stored between the films (52) and the adjacent sliding plates (51); A connecting plate (53) is slidably connected to the T-shaped hole of the bolt column (1), the connecting plate (53) is hinged to two connecting rods (54), and the connecting rods (54) are hinged to the adjacent sliding plate (51); A damage detection component is arranged in the T-shaped hole of the bolt column (1) and is used to detect whether the bolt column (1) is cut off.

10. A safety anti-theft bolt according to claim 9, characterized in that: The damage detection component includes: A sliding column (61) is slidably connected in the T-shaped hole of the bolt column (1); a second tension spring is fixedly connected between the sliding column (61) and the bolt column (1); a pull rope (62) is fixedly connected to the sliding column (61); and the pull rope (62) is fixedly connected to the upper part of the bolt column (1).

Images