CN220732904U - Locking structure - Google Patents

Abstract

The utility model belongs to the technical field of protection of cameras, and particularly relates to a locking structure, which comprises: the camera comprises a camera and a fixed block, wherein the fixed block is fixedly connected to the periphery of the camera, two slots are formed in the bottom surface of the fixed block, plug blocks are inserted into the slots, and a protective cover is fixedly connected to the bottom surfaces of the two plug blocks; the utility model solves the problems that when a user needs to inspect or maintain a camera, the user needs to use a tool to take out bolts next to each other to detach a protection device, inspect or maintain the camera inside, and the disassembly mode is complicated and unfavorable for use.

Description

Locking structure

Technical Field

The utility model belongs to the technical field of protection of cameras, and particularly relates to a locking structure.

Background

A camera protection device is a design or equipment that aims to protect a camera from damage, interference, malicious operation, or environmental factors. These devices help ensure proper operation and long-term stability of the camera.

For example, chinese patent with publication number CN 213279851U discloses a protection device of remote monitoring camera, relates to the relevant technical field of protection of camera, including upper cover, installation underframe and protection casing, upper cover and installation underframe demountable installation, the fixed bottom open position that sets up at the installation underframe of protection casing, the protection casing is hemispherical structure, and is the stainless steel material, protection casing both sides upper portion all is equipped with the fixture that is used for pressing from both sides protection casing outside the monitoring camera. The utility model relates to a protection device for a remote monitoring camera, which can effectively protect the camera from being damaged by human factors or other factors on the premise of not influencing the normal shooting of the monitoring camera by a protection cover capable of synchronously rotating along with the monitoring camera, so that all-weather monitoring can effectively work, and the protection device is simple and practical.

The above patent has the following problems:

this patent suffers from several drawbacks in use, such as: above-mentioned protection device is fixed through the bolt, leads to when the user needs to inspect or maintain the camera, and the user need use the instrument to take out the bolt next, just can demolish protection device, inspect or maintain inside the camera, and this kind of dismantlement mode is comparatively loaded down with trivial details, is unfavorable for the use. In view of this, we propose a locking structure.

Disclosure of Invention

The present utility model is directed to a locking structure for solving the above-mentioned problems.

In view of this, the present utility model provides a locking structure, comprising:

the camera comprises a camera and a fixed block, wherein the fixed block is fixedly connected to the periphery of the camera, two slots are formed in the bottom surface of the fixed block, plug blocks are inserted into the slots, and protection covers are fixedly connected to the bottom surfaces of the two plug blocks;

the two sliding grooves are respectively formed in the inner walls of the two slots, a threaded rod is connected in a sliding manner in the sliding grooves, and one end of the threaded rod extends into the inserting block;

the driving assembly is positioned in the fixed block and used for driving the two threaded rods to move.

Based on the above-mentioned structure, through slot, inserted block and the safety cover that set up, let two inserted blocks insert respectively in two slots, restrict the safety cover in the bottom surface of fixed block, through gear groove and the threaded rod that sets up, let two threaded rods can slide in two gear grooves respectively, the one end of two threaded rods also can insert respectively in two inserted blocks simultaneously, it can't remove in two slots respectively to fix two inserted blocks, drive assembly through setting up lets the user drive two threaded rods through drive assembly, let the one end of two threaded rods enter into two gear grooves respectively in two inserted blocks, the fixing of two inserted blocks is relieved, let the user can take out the safety cover, inspect or maintain the camera.

In the above technical solution, further, the locking assembly includes:

the camera comprises a camera and a fixed block, wherein the fixed block is fixedly connected to the periphery of the camera, two slots are formed in the bottom surface of the fixed block, plug blocks are inserted into the slots, and protection covers are fixedly connected to the bottom surfaces of the two plug blocks;

the two sliding grooves are respectively formed in the inner walls of the two slots, a threaded rod is connected in a sliding manner in the sliding grooves, and one end of the threaded rod extends into the inserting block;

the driving assembly is positioned in the fixed block and used for driving the two threaded rods to move.

In the above technical solution, further, the locking assembly includes:

the two gear grooves are respectively formed in the inner walls of the two sliding grooves, two first bevel gears are respectively connected in the two gear grooves in a rotating mode, the two first bevel gears are respectively connected with the two threaded rods in a threaded mode, and a second bevel gear is meshed above the first bevel gears;

the movable groove is formed in the fixed block, two rotating grooves are formed in the inner wall of the movable groove, a first through groove communicated with the inner wall of the gear groove is formed in the inner wall of the rotating groove, two first chain wheels are connected in the movable groove in a rotating mode, one end of each first chain wheel is fixedly connected with a worm, one side of each worm is meshed with a worm wheel, the bottom end of each worm wheel is fixed with a first bevel gear, a chain is meshed between the two first chain wheels, a second chain wheel is meshed in the chain, one side of each second chain wheel is fixedly connected with a rotating rod, and one end of each rotating rod penetrates through the movable groove and extends to the outside to be connected with the fixed block in a rotating mode;

and the fixing assembly is positioned in the fixing block and is used for fixing the rotating rod.

In this technical scheme, ensure that the user maintains or when changing the camera, can be convenient more.

In the above technical solution, further, the second bevel gear is located in the gear groove and is rotationally connected with the gear groove.

In the technical scheme, the second bevel gear can normally rotate in the gear groove.

In the above technical scheme, further, the worm is located in the rotating groove and is rotationally connected with the rotating groove, and the worm wheel is located in the first through groove and is rotationally connected with the first through groove.

In the technical scheme, the worm is ensured to normally rotate in the rotating groove, and the worm wheel is ensured to normally rotate in the first through groove.

In the above technical solution, further, the fixing assembly includes:

the second through groove is formed in the fixed block and is communicated with the outside, a thread bush is connected in the second through groove in a threaded manner, the thread bush is arranged on the periphery of the rotating rod, and an extrusion groove is formed in one end of the thread bush;

the extrusion piece, extrusion piece fixed connection is on the inner wall in second through groove, the one end of extrusion piece extends to the extrusion inslot and sets up on the week side of bull stick.

In this technical scheme, ensure that the bull stick can not receive external influence to take place to rotate.

In the above technical scheme, further, the inner wall of extrusion groove is the slope setting, extrusion piece's one end and extrusion groove grafting cooperation, the bull stick rotates with thread bush and extrusion piece respectively and is connected.

In this technical scheme, ensure that the extrusion groove can extrude the one end of extrusion piece, ensure that the one end of extrusion piece can normally insert the extrusion inslot, ensure that the bull stick can normally rotate in thread bush and extrusion piece.

In the above technical scheme, further, one end of the threaded rod is in plug-in fit with the plug.

In this technical scheme, ensure that the one end of threaded rod can normally insert in the inserted block.

The beneficial effects of the utility model are as follows:

this lock structure that dies, through the slot that sets up, inserted block and safety cover, let two inserted blocks insert respectively in two slots, restrict the safety cover in the bottom surface of fixed block, through gear groove and the threaded rod that sets up, let two threaded rods can slide in two gear grooves respectively, simultaneously two threaded rod's one end also can insert respectively in two inserted blocks, it can't remove in two slots respectively to fix two inserted blocks, drive assembly through setting up, let the user drive two threaded rods remove through drive assembly, let two threaded rod's one end enter into two gear grooves respectively in two inserted blocks, the fixing to two inserted blocks is relieved, let the user can take out the safety cover, check or maintain the camera, when the user need check or maintain the camera, the user need use the tool to take out the bolt next, just can demolish protection device, check or maintain inside camera, this kind of dismantlement mode is comparatively loaded down with trivial details, the problem that is unfavorable for use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of an explosive structure of the area of the present utility model;

FIG. 3 is a schematic view of the internal structure of the fixing block of the present utility model;

FIG. 4 is a schematic cross-sectional view of a mounting block of the present utility model;

FIG. 5 is a second schematic view of the internal structure of the fixing block of the present utility model;

fig. 6 is a schematic view of a partial exploded construction of the present utility model.

The label in the figure is:

1. a camera; 2. a fixed block; 3. a slot; 4. inserting blocks; 5. a protective cover; 6. a chute; 7. a gear groove; 8. a threaded rod; 9. a first bevel gear; 10. a second bevel gear; 11. a movable groove; 12. a rotating groove; 13. a first through groove; 14. a first sprocket; 15. a worm; 16. a worm wheel; 17. a chain; 18. a second sprocket; 19. a rotating rod; 20. a second through slot; 21. a thread sleeve; 22. an extrusion groove; 23. extruding the blocks.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be noted that, in the description of the present application, the terms "front, rear, upper, lower, left, right", "horizontal, vertical, horizontal", and "top, bottom", etc. generally refer to an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and merely for convenience of description of the present application and simplification of the description, the azimuth terms do not indicate and imply that the apparatus or element referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

It should be noted that, in this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Example 1:

referring to fig. 1-6, the present embodiment provides a locking structure, which includes:

the camera comprises a camera 1 and a fixed block 2, wherein the fixed block 2 is fixedly connected to the periphery of the camera 1, two slots 3 are formed in the bottom surface of the fixed block 2, plug blocks 4 are inserted into the slots 3, and a protective cover 5 is fixedly connected to the bottom surfaces of the two plug blocks 4;

the two sliding grooves 6 are respectively formed in the inner walls of the two slots 3, a threaded rod 8 is connected in a sliding manner in the sliding grooves 6, and one end of the threaded rod 8 extends into the insertion block 4;

the driving assembly is positioned in the fixed block 2 and used for driving the two threaded rods 8 to move.

Example 2:

the present embodiment provides a locking structure, which has the following technical features in addition to the technical scheme including the above embodiment, and the locking assembly includes:

the two gear grooves 7 are respectively formed in the inner walls of the two sliding grooves 6, two first bevel gears 9 are respectively connected with the two gear grooves 7 in a rotating mode, the two first bevel gears 9 are respectively connected with the two threaded rods 8 in a threaded mode, and a second bevel gear 10 is meshed above the first bevel gears 9;

the movable groove 11 is formed in the fixed block 2, two rotating grooves 12 are formed in the inner wall of the movable groove 11, a first through groove 13 communicated with the inner wall of the gear groove 7 is formed in the inner wall of the rotating groove 12, two first chain wheels 14 are connected in a rotating mode in the movable groove 11, one end of each first chain wheel 14 is fixedly connected with a worm 15, one side of each worm 15 is meshed with a worm wheel 16, the bottom end of each worm wheel 16 is fixed with the corresponding first bevel gear 9, a chain 17 is meshed between the two first chain wheels 14, a second chain wheel 18 is meshed in the chain 17, one side of each second chain wheel 18 is fixedly connected with a rotating rod 19, and one end of each rotating rod 19 penetrates through the movable groove 11 and extends to the outside to be connected with the fixed block 2 in a rotating mode;

and a fixing assembly, which is positioned in the fixing block 2 and is used for fixing the rotating rod 19.

Wherein, when a user needs to inspect or repair the camera 1, the user releases the fixing of the rotating rod 19 through the fixing component, then the user rotates the rotating rod 19 by hand, the rotating rod 19 drives the second sprocket 18 to rotate in the movable groove 11, the second sprocket 18 drives the two first sprockets 14 to rotate through the chain 17, when the two first sprockets 14 rotate, the two first sprockets 14 respectively drive the two worms 15 to rotate, the two worms 15 respectively drive the two worm gears 16 to rotate, the worm gears 16 drive the corresponding second bevel gears 10 to rotate in the corresponding gear grooves 7, when the two second bevel gears 10 rotate, the second bevel gears 10 drive the corresponding first bevel gears 9 to rotate in the gear grooves 7, when the two first bevel gears 9 rotate, one ends of the two threaded rods 8 are respectively under the action of the threads of the two first bevel gears 9, the two inserting blocks 4 are respectively inserted into the two sliding grooves 6 from the two inserting blocks 4, at the moment, the fixation of the two inserting blocks 4 is released, then a user can pull the protective cover 5 to drive the two inserting blocks 4 to be respectively moved out of the two inserting grooves 3 to the outside, then the user can check or repair the camera 1, after the checking or repairing is finished, the user holds the protective cover 5 by hands to respectively insert the two inserting blocks 4 into the two inserting grooves 3, then the user reversely rotates the rotating rod 19 by hands to drive the rotating rod 19 to drive the second chain wheel 18 to reversely rotate in the movable groove 11, the second chain wheel 18 drives the two first chain wheels 14 to reversely rotate through the chain 17, when the two first chain wheels 14 reversely rotate, the two first chain wheels 14 respectively drive the two worms 15 to reversely rotate, the two worms 15 respectively drive the two worm wheels 16 to reversely rotate, the worm wheel 16 drives the corresponding second bevel gears 10 to reversely rotate in the corresponding gear grooves 7, when the two second bevel gears 10 reversely rotate, the second bevel gears 10 can drive the corresponding first bevel gears 9 to reversely rotate in the gear grooves 7, when the two first bevel gears 9 reversely rotate, one ends of the two threaded rods 8 can be respectively acted by the threads of the two first bevel gears 9, the two threaded rods enter the two inserting blocks 4 from the two sliding grooves 6 respectively, at the moment, the two inserting blocks 4 are respectively fixed in the two inserting grooves 3, then a user fixes the rotating rod 19 through the fixing assembly, and the convenience and convenience can be improved when the user maintains or changes the camera 1.

Example 3:

the present embodiment provides a locking structure having the following technical features in addition to the technical scheme including the above embodiment, and the second bevel gear 10 is located in the gear groove 7 and is rotatably connected with the gear groove 7.

Wherein it is ensured that the second bevel gear 10 can rotate normally in the gear groove 7.

Example 4:

the present embodiment provides a locking structure, which has the following technical features in addition to the technical scheme including the above embodiment, in which the worm 15 is located in the rotation groove 12 and is rotatably connected to the rotation groove 12, and the worm wheel 16 is located in the first through groove 13 and is rotatably connected to the first through groove 13.

Wherein, ensure that worm 15 can normally rotate in rotating groove 12, ensure that worm wheel 16 can normally rotate in first logical groove 13.

Example 5:

the present embodiment provides a locking structure, which includes the following technical features in addition to the technical scheme of the foregoing embodiment, and the fixing assembly includes:

the second through groove 20 is formed in the fixed block 2 and is communicated with the outside, a thread bush 21 is connected in the second through groove 20 in a threaded manner, the thread bush 21 is arranged on the periphery of the rotating rod 19, and an extrusion groove 22 is formed in one end of the thread bush 21;

the extrusion piece 23, the extrusion piece 23 fixed connection is on the inner wall of second through groove 20, and the one end of extrusion piece 23 extends into extrusion groove 22 and sets up on the week side of bull stick 19.

When the user needs to inspect or repair the camera 1, the user rotates the threaded sleeve 21 by hand, so that the threaded sleeve 21 is moved to the outside under the action of the threads of the second through groove 20, when the threaded sleeve 21 moves to a proper position, the extrusion groove 22 can release extrusion of one end of the extrusion block 23, so that the extrusion block 23 releases extrusion of the rotary rod 19, after the user inspects or repairs, the user reversely rotates the threaded sleeve 21 by hand, so that the threaded sleeve 21 is moved to a direction away from the outside under the action of the threads of the second through groove 20, when the threaded sleeve 21 moves to a proper position, the extrusion groove 22 can extrude one end of the extrusion block 23, so that the extrusion block 23 extrudes the rotary rod 19, and when the threaded sleeve 21 rotates to a position incapable of rotating, the rotary rod 19 is fixed, so that the rotary rod 19 is ensured not to be influenced by the outside.

Example 6:

the embodiment provides a locking structure, which has the following technical characteristics except the technical scheme of the embodiment, the inner wall of the extrusion groove 22 is obliquely arranged, one end of the extrusion block 23 is in plug-in fit with the extrusion groove 22, and the rotating rod 19 is respectively connected with the threaded sleeve 21 and the extrusion block 23 in a rotating way.

Wherein, ensure that extrusion groove 22 can extrude extrusion piece 23's one end, ensure that extrusion piece 23's one end can normally insert extrusion groove 22, ensure that bull stick 19 can normally rotate in thread bush 21 and extrusion piece 23.

Example 7:

the present embodiment provides a locking structure, which has the following technical features in addition to the technical scheme of the above embodiment, and one end of the threaded rod 8 is in plug-in fit with the plug 4.

Wherein it is ensured that one end of the threaded rod 8 can be inserted normally into the insert block 4.

When a user needs to inspect or repair the camera 1, the user rotates the threaded sleeve 21 by hand, the threaded sleeve 21 is moved to the outside under the action of the threads of the second through groove 20, when the threaded sleeve 21 moves to a proper position, the extrusion groove 22 releases extrusion of one end of the extrusion block 23, the extrusion block 23 releases extrusion of the rotary rod 19, then the user rotates the rotary rod 19 by hand, the rotary rod 19 drives the second sprocket 18 to rotate in the movable groove 11, the second sprocket 18 drives the two first sprockets 14 to rotate through the chain 17, when the two first sprockets 14 rotate, the two first sprockets 14 respectively drive the two worms 15 to rotate, the two worms 15 respectively drive the two worm gears 16 to rotate, the worm gears 16 drive the corresponding second bevel gears 10 to rotate in the corresponding gear grooves 7, when the two second bevel gears 10 rotate, the second bevel gears 10 drive the corresponding first bevel gears 9 to rotate in the gear grooves 7, when the two first bevel gears 9 rotate, one ends of the two threaded rods 8 are respectively acted by the threads of the two first bevel gears 9 and respectively enter the two sliding grooves 6 from the two inserting blocks 4, at the moment, the fixing of the two inserting blocks 4 is released, then a user can pull the protective cover 5 to drive the two inserting blocks 4 to respectively move out of the two inserting grooves 3 to the outside, then the user can check or repair the camera 1, after the checking or repairing is finished, the user holds the protective cover 5 by hands to insert the two inserting blocks 4 into the two inserting grooves 3 respectively, then the user reversely rotates the rotating rod 19 by hands, the rotating rod 19 drives the second sprocket 18 to reversely rotate in the movable grooves 11, the second sprocket 18 drives the two first sprockets 14 to reversely rotate through the chain 17, when two first sprocket 14 reverse rotation, two first sprocket 14 can drive two worms 15 respectively and carry out reverse rotation, let two worms 15 drive two worm wheel 16 respectively and carry out reverse rotation, make worm wheel 16 drive corresponding second bevel gear 10 reverse rotation in corresponding gear groove 7, when two second bevel gears 10 reverse rotation, second bevel gear 10 can drive corresponding first bevel gear 9 reverse rotation in gear groove 7, when two first bevel gears 9 reverse rotation, the effect of two first bevel gears 9 screw thread can be received respectively to one end of two threaded rods 8, enter into two inserts 4 respectively from two spout 6, at this moment two inserts 4 are fixed respectively in two slot 3, ensure that the user is to the maintenance or when changing of camera 1, can be more convenient and convenient, then the user is with reverse rotation thread bush 21, let thread bush 21 receive the effect of second bevel gear 20 screw thread to the direction that keeps away from the external world, when thread bush 21 moves to suitable position, extrusion groove 22 can extrude extrusion piece 23 one end, make extrusion piece 23 respectively, the bull stick 19 can not be rotated to the external rotation when the bull stick is rotated to the external rotation of 19 when the external rotation can not be influenced by the rotation of the bull stick of the assurance.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (7)

1. A dead lock structure, comprising:

the camera comprises a camera (1) and a fixed block (2), wherein the fixed block (2) is fixedly connected to the periphery of the camera (1), two slots (3) are formed in the bottom surface of the fixed block (2), inserting blocks (4) are inserted into the slots (3), and protection covers (5) are fixedly connected to the bottom surfaces of the two inserting blocks (4);

the two sliding grooves (6) are respectively formed in the inner walls of the two slots (3), a threaded rod (8) is connected in the sliding way in the sliding grooves (6), and one end of the threaded rod (8) extends into the inserting block (4);

the driving assembly is positioned in the fixed block (2) and is used for driving the two threaded rods (8) to move.

2. A deadlocking structure according to claim 1, wherein the drive assembly comprises:

the two gear grooves (7) are respectively formed in the inner walls of the two sliding grooves (6), two first bevel gears (9) are respectively connected in a rotating mode in the two gear grooves (7), the two first bevel gears (9) are respectively connected with two threaded rods (8) in a threaded mode, and a second bevel gear (10) is meshed above the first bevel gears (9);

the movable groove (11), the movable groove (11) is formed in the fixed block (2), two rotating grooves (12) are formed in the inner wall of the movable groove (11), a first through groove (13) communicated with the inner wall of the gear groove (7) is formed in the inner wall of the rotating groove (12), two first chain wheels (14) are rotationally connected to the movable groove (11), one end of each first chain wheel (14) is fixedly connected with a worm (15), one side of each worm (15) is meshed with a worm wheel (16), the bottom end of each worm wheel (16) is fixed with a first bevel gear (9), a chain (17) is meshed between the two first chain wheels (14), a second chain wheel (18) is meshed in the chain (17), one side of each second chain wheel (18) is fixedly connected with a rotating rod (19), and one end of each rotating rod (19) penetrates through the movable groove (11) and extends to the outside to be rotationally connected with the fixed block (2);

the fixing assembly is positioned in the fixing block (2) and used for fixing the rotating rod (19).

3. A locking arrangement according to claim 2, characterized in that the second bevel gear (10) is located in the gear groove (7) and is in rotational connection with the gear groove (7).

4. A locking arrangement according to claim 2, characterized in that the worm (15) is located in the rotation groove (12) and is in rotational connection with the rotation groove (12), and the worm wheel (16) is located in the first through groove (13) and is in rotational connection with the first through groove (13).

5. The lock-up structure of claim 2, wherein the securing assembly comprises:

the second through groove (20) is formed in the fixed block (2) and is communicated with the outside, a thread bush (21) is connected in the second through groove (20) in a threaded mode, the thread bush (21) is arranged on the periphery of the rotating rod (19), and an extrusion groove (22) is formed in one end of the thread bush (21);

the extrusion piece (23), extrusion piece (23) fixed connection is on the inner wall of second through groove (20), the one end of extrusion piece (23) extends into extrusion groove (22) and sets up on the week side of bull stick (19).

6. The locking structure according to claim 5, wherein the inner wall of the extrusion groove (22) is inclined, one end of the extrusion block (23) is in plug-in fit with the extrusion groove (22), and the rotating rod (19) is respectively in rotary connection with the threaded sleeve (21) and the extrusion block (23).

7. A locking structure according to claim 1, characterized in that one end of the threaded rod (8) is in a plug-in fit with the plug (4).