CN114300221A

CN114300221A - Low-voltage side filtering compensation energy-saving rectifying lightning protection transformer

Info

Publication number: CN114300221A
Application number: CN202111681052.6A
Authority: CN
Inventors: 倪晓伟
Original assignee: Wuxi Huili Special Power Supply Co ltd
Current assignee: Wuxi Huili Special Power Supply Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-08
Anticipated expiration: 2041-12-28
Also published as: CN114300221B

Abstract

The invention discloses a low-voltage side filtering compensation energy-saving rectifying lightning protection transformer, which relates to the technical field of transformers and specifically comprises a support frame and a connecting base, wherein a transformer main body is arranged inside the support frame, a heat dissipation strip is arranged on the outer surface of the transformer main body, a cooling pipe is arranged outside the heat dissipation strip, an auxiliary plate is arranged outside the cooling pipe, the connecting base is positioned outside the bottom of the transformer main body, and a connecting shaft is arranged in the middle of the auxiliary plate. This energy-saving rectification lightning protection transformer of low pressure side filtering compensation, the inside of cooling tube is for cavity and inside deposit has the cooling water, thereby can utilize the design of hydraulic cylinder and mounting panel to make the cooling tube that is connected with the accessory plate constantly be close to the inside of heat dissipation strip at the accessory plate, can make the cooling tube place between two adjacent heat dissipation strips, thereby can utilize the design of the inside cooling water of cooling tube to carry out timely endothermic processing to the temperature that transformer main part during operation heat dissipation strip outside gived off.

Description

Low-voltage side filtering compensation energy-saving rectifying lightning protection transformer

Technical Field

The invention relates to the technical field of transformers, in particular to a low-voltage side filter compensation energy-saving rectifying lightning protection transformer.

Background

A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like. Transformers can be divided into: distribution transformers, power transformers, fully enclosed transformers, lightning protection transformers, etc.

The existing transformer has the problems of insufficient energy conservation in the use process and inconvenience in energy-saving heat dissipation and protection treatment.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a low-voltage side filtering compensation energy-saving rectifying lightning protection transformer, which solves the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: a low-voltage side filtering compensation energy-saving rectifying lightning protection transformer comprises a support frame and a linking base, wherein a transformer main body is arranged inside the support frame, a heat dissipation strip is arranged on the outer surface of the transformer main body, a cooling pipe is arranged outside the heat dissipation strip, an auxiliary plate is arranged outside the cooling pipe, the linking base is positioned outside the bottom of the transformer main body, a connecting shaft is arranged in the middle of the auxiliary plate, a protective frame is arranged at the left end of the connecting shaft, a motor is arranged inside the protective frame, a supporting vertical plate is arranged on the outer surface of the protective frame, a mounting plate is arranged at the bottom of the supporting vertical plate, a linking plate body is arranged at the upper end of the mounting plate, a hydraulic cylinder is fixedly arranged on the outer surface of the mounting plate, a switching frame is arranged at the upper end of the supporting vertical plate, a supporting rod is arranged at the top of the switching frame, and a heat dissipation component for dissipating heat of the transformer main body is arranged at the upper end of the supporting rod, the heat dissipation assembly comprises a rack, a gear, a built-in shaft and blades, the gear is arranged inside the rack, the built-in shaft is arranged inside the gear, and the blades are arranged on the outer surface of the built-in shaft.

Furthermore, the number of the racks is two, and the two racks are parallel to each other.

Further, the gear is coincident with the center of the built-in shaft, and the blades are distributed annularly about the center of the built-in shaft.

Furthermore, the transverse central axis of the auxiliary plate is perpendicular to the vertical central line of the cooling pipe, and the width of the cooling pipe is matched with the width between two adjacent radiating strips.

Furthermore, the top block of support frame is installed the apron, and the inside of support frame is hollow column structure.

Further, the diaphragm is all installed at the outside both ends of support riser, and the outside of diaphragm is provided with links up the hook, link up the upper end of hook and install the end and put the pole, and the end is put the upper end of pole and is installed the side and put the dish.

Furthermore, the side placing discs are tightly attached to the supporting frame, and two groups of the side placing discs are symmetrically arranged on the vertical central line of the supporting frame.

Further, the inside of putting the dish to the side is provided with and is used for the inside radiating auxiliary assembly of auxiliary stay frame, and auxiliary assembly includes connecting spring, fixed block, baffle and vent, the fixed block is installed to connecting spring's upper end, and the upper end fixed mounting of fixed block has the baffle, the rear end of baffle is provided with the vent.

Furthermore, the vent is parallel to the baffle, and the length and the width of the baffle are both greater than those of the baffle.

Furthermore, the connecting spring is tightly attached to the bottom rod, and the bottom rod, the connecting hook, the transverse plate and the connecting plate body form an Contraband-shaped structure.

The invention provides a low-voltage side filtering compensation energy-saving rectifying lightning protection transformer, which has the following beneficial effects:

lightning protection transformer can utilize the design of support frame to shelter from the protection from whole lightning protection transformer's outside in the use, effectively avoid the collision of outside foreign matter or other factors to bring the possibility of damage, and can cool down the processing to the heat that gives off in the lightning protection transformer working process when protecting lightning protection transformer, it is higher to avoid lightning protection transformer to utilize the support frame to accomodate the inside temperature of keeping up when protecting, can carry out timely mediation to the temperature that lightning protection transformer work gave off, and linkage structure's design when dispelling the heat to lightning protection transformer, accelerate the flow of the inside air of support frame when can carrying out water-cooling heat dissipation, be convenient for the inside temperature of support frame outwards dredge fast, it is more energy-conserving.

1. According to the low-voltage side filtering compensation energy-saving rectifying lightning protection transformer, the cooling pipe is hollow and stores cooling water, so that the cooling pipe connected with the auxiliary plate can be continuously close to the interior of the radiating strips by the aid of the auxiliary plate through the design of the hydraulic cylinder and the mounting plate, the cooling pipe can be placed between every two adjacent radiating strips, and the temperature emitted from the exterior of the radiating strips when the transformer main body works can be subjected to timely heat absorption treatment through the design of the cooling water in the cooling pipe;

2. according to the low-voltage side filtering compensation energy-saving rectifying lightning protection transformer, the auxiliary plate can be rotated through the design of the motor and the connecting shaft, and the cooling pipes are symmetrically distributed about the transverse central axis of the auxiliary plate, so that the auxiliary plate can be rotated after one group of cooling pipes absorbs heat for a period of time, another group of cooling pipes in the auxiliary plate are placed between two adjacent radiating strips for cooling and radiating, the high stability of the temperature in the cooling pipes is effectively avoided when the cooling pipes are used for cooling the transformer main body for a long time, the cooling pipes can be rotated to be separated from the auxiliary plate in the long-time use process, and a user can conveniently overhaul the cooling pipes;

3. the low-voltage side filtering compensation energy-saving rectifying lightning protection transformer can synchronously drive the switching frame and the supporting rod to move back and forth through the design of the hydraulic cylinder when the auxiliary plate is rotated to replace a cooling pipe, so that the rack connected with the supporting rod can be driven to move back and forth through the movement of the positions of the switching frame and the supporting rod, the gear and the built-in shaft meshed with the rack can be rotated through the movement of the back and forth positions of the rack, the blades connected with the rack can rotate step by step through the rotation of the built-in shaft, the circulation of air outside the transformer main body can be effectively accelerated through the rapid rotation of the blades, and the heat dissipation effect on the transformer main body is improved;

4. according to the low-voltage side filtering compensation energy-saving rectifying lightning protection transformer, through the operation of the hydraulic cylinder, the auxiliary plate can be continuously away from the heat dissipation strip, the blades can continuously rotate, the cooling pipe can be cooled while the auxiliary plate is away from the heat dissipation strip, the cooling pipe which is turned to the end away from the heat dissipation strip can be cooled and cooled through standing, rotation of the blades and external natural wind, the design of a linkage structure can protect a transformer main body and has a good heat dissipation effect, and the transformer is energy-saving continuously;

5. this energy-saving rectification lightning protection transformer of low pressure side filtering compensation, can be when hydraulic cylinder carries out the front and back position removal, usable end puts the pole, the linking hook, baffle that diaphragm and linking plate body between the interact drive the fixed block and be connected utilizes the design of upper end axis body to rotate, can utilize the pappus brush that baffle external surface was provided with to carry out friction formula clearance to the vent through constantly removing to the baffle, avoid the vent inside to produce with the foreign matter and block up, influence ventilation effect, and constantly remove through the angle of baffle can improve the circulation effect of transformer main part outside air, further cool down the thermal treatment to the transformer main part.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the inner connection structure of the auxiliary frame according to the present invention;

FIG. 3 is a schematic side view of a supporting riser connection according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the internal structure of the side tray of the present invention.

In the figure: 1. a support frame; 2. a transformer body; 3. a heat dissipating strip; 4. connecting the base; 5. an auxiliary plate; 6. a cooling tube; 7. a connecting shaft; 8. a support vertical plate; 9. a transfer rack; 10. a support bar; 11. an auxiliary frame; 12. a cover plate; 13. a heat dissipating component; 1301. a rack; 1302. a gear; 1303. a built-in shaft; 1304. a blade; 14. a hydraulic cylinder; 15. mounting a plate; 16. connecting plate bodies; 17. a protective frame; 18. a motor; 19. laterally placing a disc; 20. a connecting hook; 21. a transverse plate; 22. an auxiliary component; 2201. a connecting spring; 2202. a fixed block; 2203. a baffle plate; 2204. a vent; 23. a bottom rod.

Detailed Description

Referring to fig. 1 to 5, the present invention provides a technical solution: a low-voltage side filtering compensation energy-saving rectifying lightning protection transformer comprises a support frame 1, a transformer main body 2, heat dissipation strips 3, a connecting base 4, an auxiliary plate 5, a cooling pipe 6, a connecting shaft 7, a supporting vertical plate 8, a switching frame 9, a supporting rod 10, an auxiliary frame 11, a cover plate 12, a heat dissipation component 13, a rack 1301, a gear 1302, a built-in shaft 1303, blades 1304, a hydraulic cylinder 14, an installing plate 15, a connecting plate body 16, a protecting frame 17, a motor 18, a side disc 19, a connecting hook 20, a transverse plate 21, an auxiliary component 22, a connecting spring 2201, a fixing block 2202, a baffle 2203, a vent 2204 and a bottom rod 23, wherein the transformer main body 2 is arranged inside the support frame 1, the heat dissipation strips 3 are installed on the outer surface of the transformer main body 2, the cover plate 12 is installed on the top of the support frame 1 in a clamping mode, the support frame 1 is of a hollow structure, the cooling pipe 6 is arranged outside the heat dissipation strips 3, an auxiliary plate 5 is arranged outside the cooling pipe 6, the engagement base 4 is positioned outside the bottom of the transformer main body 2, a connecting shaft 7 is arranged in the middle of the auxiliary plate 5, a protective frame 17 is arranged at the left end of the connecting shaft 7, a motor 18 is arranged inside the protective frame 17, a supporting vertical plate 8 is arranged on the outer surface of the protective frame 17, an installation plate 15 is arranged at the bottom of the supporting vertical plate 8, an engagement plate body 16 is arranged at the upper end of the installation plate 15, a hydraulic cylinder 14 is fixedly arranged on the outer surface of the installation plate 15, an adapter frame 9 is arranged at the upper end of the supporting vertical plate 8, a support rod 10 is arranged at the top of the adapter frame 9, a heat dissipation component 13 for dissipating heat of the transformer main body 2 is arranged at the upper end of the support rod 10, the heat dissipation component 13 comprises a rack 1301, a gear 1302, a built-in shaft 1303 and blades 1304, the gear 1302 is arranged inside the rack, and the built-in shaft 1303 is arranged inside the rack, the gear 1302 and the center of the built-in shaft 1303 coincide, the blades 1304 are annularly distributed around the center of the built-in shaft 1303, two racks 1301 are arranged, the two racks 1301 are parallel to each other, and the blades 1304 are arranged on the outer surface of the built-in shaft 1303;

specifically, when the auxiliary plate 5 is rotated to replace the cooling pipe 6, the adaptor frame 9 and the support rod 10 are synchronously driven to move back and forth by the design of the hydraulic cylinder 14, so that the rack 1301 connected with the support rod 10 is driven to move back and forth by the movement of the adaptor frame 9 and the support rod 10, the gear 1302 and the built-in shaft 1303 engaged with the rack 1301 can be rotated by the movement of the rack 1301 back and forth, the blades 1304 connected with the built-in shaft 1303 are rotated in a same step, the circulation of air outside the transformer main body 2 can be effectively accelerated by the rapid rotation of the blades 1304, the heat dissipation effect on the transformer main body 2 is improved, the auxiliary plate 5 can be rotated by the design of the motor 18 and the connecting shaft 7, and the cooling pipe 6 is symmetrically distributed about the transverse central axis of the auxiliary plate 5, therefore, after one group of cooling pipes 6 absorbs heat to one end, the auxiliary plate 5 can be rotated, so that the other group of cooling pipes 6 in the auxiliary plate 5 is placed between two adjacent heat dissipation strips 3 for cooling and heat dissipation, the stability that the temperature in the cooling pipes 6 is higher when the transformer main body 2 is cooled by using the cooling pipes 6 for a long time is effectively avoided, the cooling pipes 6 can be rotated to be separated from the auxiliary plate 5 in the long-time use process, a user can conveniently overhaul the cooling pipes 6, the auxiliary plate 5 can be continuously far away from the heat dissipation strips 3 through the operation of the hydraulic cylinder 14, the blades 1304 can be continuously rotated, the cooling pipes 6 can be cooled while the auxiliary plate 5 is far away from the heat dissipation strips 3, the cooling pipes 6 which are turned to the end far away from the heat dissipation strips 3 can be cooled and heat dissipated through standing, the rotation of the blades 1304 and external natural wind, the design of linkage structure can have good radiating effect concurrently when protecting transformer main part 2, and the continuation is energy-conserving.

As shown in fig. 1, the transverse central axis of the auxiliary plate 5 is perpendicular to the vertical central line of the cooling tube 6, and the width of the cooling tube 6 is matched with the width between two adjacent radiating strips 3;

the inside of cooling tube 6 is cavity and inside and has deposited the cooling water to can utilize the design of hydraulic cylinder 14 and mounting panel 15 to make the cooling tube 6 that is connected with accessory plate 5 constantly be close to the inside of radiating strip 3 at accessory plate 5, can make cooling tube 6 place between two adjacent radiating strips 3, thereby can utilize the design of the inside cooling water of cooling tube 6 to carry out timely heat absorption to the temperature that radiating strip 3 outside gived off when transformer main part 2 during operation.

As shown in fig. 1 and 4, the two ends of the outer part of the supporting vertical plate 8 are both provided with a horizontal plate 21, the outer part of the horizontal plate 21 is provided with an engaging hook 20, the upper end of the engaging hook 20 is provided with a bottom rod 23, the upper end of the bottom rod 23 is provided with a side disc 19, the side discs 19 are tightly attached to the supporting frame 1, and the side discs 19 are symmetrically arranged in two groups about the vertical central line of the supporting frame 1;

the mounting plate 15 can be mounted on the connecting plate 16 by using the design of the bolt, and the connecting plate 16 is connected with the bottom rod 23 through the connecting hook 20, so that the connecting plate 16 connected with the mounting plate 15 can be detached by screwing the bolt when the component connected with the bottom rod 23 is not needed to be used.

As shown in fig. 4 and 5, an auxiliary component 22 for dissipating heat inside the auxiliary support frame 1 is arranged inside the side tray 19, the auxiliary component 22 includes a connecting spring 2201, a fixing block 2202, a baffle 2203 and a vent 2204, the upper end of the connecting spring 2201 is provided with the fixing block 2202, the upper end of the fixing block 2202 is fixedly provided with the baffle 2203, the rear end of the baffle 2203 is provided with the vent 2204, the vent 2204 is parallel to the baffle 2203, the length and the width of the baffle 2203 are both greater than those of the baffle 2203, the connecting spring 2201 is tightly attached to the bottom rod 23, and the bottom rod 23, the engaging hook 20, the transverse plate 21 and the engaging plate 16 form a structure shaped like a Chinese character 'Contraband';

can be when hydraulic cylinder 14 carries out the front and back position removal, usable end puts pole 23, link up hook 20, baffle 2203 that diaphragm 21 and linking plate body 16 between the interact drive fixed block 2202 and be connected utilizes the design of upper end axis body to rotate, can utilize the pappus brush that baffle 2203 external surface was provided with to carry out friction formula clearance to vent 2204 through constantly removing baffle 2203, avoid the inside foreign matter production that blocks up with of vent 2204, influence ventilation effect, and constantly remove through the angle of baffle 2203 can improve the circulation effect of 2 outside air of transformer main part, further cool down the thermal treatment to transformer main part 2.

In conclusion, when the low-voltage side filtering compensation energy-saving rectifying lightning protection transformer is used, firstly, the lightning protection transformer can be shielded and protected from the outside of the whole lightning protection transformer by using the design of the support frame 1 in the using process, the possibility of damage caused by collision of external foreign matters or other factors is effectively avoided, in addition, the heat emitted in the working process of the lightning protection transformer can be cooled and processed when the lightning protection transformer is protected, when the transformer main body 2 works, the cooling pipe 6 is hollow and the cooling water is stored in the cooling pipe 6, so that the cooling pipe 6 connected with the auxiliary plate 5 can be continuously close to the inside of the radiating strips 3 by using the design of the hydraulic cylinder 14 and the mounting plate 15 on the auxiliary plate 5, the cooling pipe 6 can be placed between the two adjacent radiating strips 3, and the heat absorption treatment can be timely carried out on the temperature emitted from the outside of the radiating strips 3 when the transformer main body 2 works by using the design of the cooling water in the cooling pipe 6, then the auxiliary plate 5 can be rotated by the design of the motor 18 and the connecting shaft 7, and the cooling tubes 6 are symmetrically distributed about the transverse central axis of the auxiliary plate 5, so that the auxiliary plate 5 can be rotated after one group of cooling tubes 6 absorb heat for a period of time, so that the other group of cooling tubes 6 in the auxiliary plate 5 can be placed between two adjacent radiating strips 3 for cooling and radiating treatment, thereby effectively avoiding the stability of higher temperature in the cooling tubes 6 when the transformer body 2 is cooled by using the cooling tubes 6 for a long time, and the cooling tubes 6 can be separated from the auxiliary plate 5 by rotating the cooling tubes 6 in the long-time use process, so that a user can conveniently overhaul the cooling tubes 6, and then when the auxiliary plate 5 is rotated to replace the cooling tubes 6, the switching frame 9 and the supporting rod 10 can be synchronously driven to move back and forth through the design of the hydraulic cylinder 14, therefore, the rack 1301 connected with the support rod 10 can be driven to move back and forth through the movement of the positions of the adapter rack 9 and the support rod 10, the gear 1302 and the built-in shaft 1303 meshed with the rack 1301 can be rotated through the movement of the front and back positions of the rack 1301, the blades 1304 connected with the rack 1303 can rotate step by step through the rotation of the built-in shaft 1303, the circulation of air outside the transformer main body 2 can be effectively accelerated through the quick rotation of the blades 1304, meanwhile, the auxiliary plate 5 can be continuously far away from the radiating strip 3 through the operation of the hydraulic cylinder 14, the blades 1304 can continuously rotate at the same time, the cooling pipe 6 can be radiated while the auxiliary plate 5 is far away from the radiating strip 3, the cooling pipe 6 turned to the end far away from the radiating strip 3 can be cooled and radiated through standing, the rotation of the blades 1304 and external natural wind, and finally, when the front and back positions of the hydraulic cylinder 14 are moved, usable end puts pole 23, link up hook 20, baffle 2203 that diaphragm 21 and link up between the plate body 16 interact drive fixed block 2202 and be connected utilizes the design of upper end axis body to rotate, can utilize the pappus brush that baffle 2203 external surface was provided with to carry out the friction formula clearance to vent 2204 through constantly removing baffle 2203, avoid the inside foreign matter that blocks up with of vent 2204, influence the ventilation effect, and constantly removing through the angle of baffle 2203 can improve the circulation effect of 2 outside air of transformer main part, realize dispelling the heat when protecting the transformer.

Claims

1. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer is characterized by comprising a support frame (1) and a linking base (4), wherein a transformer main body (2) is arranged inside the support frame (1), a heat dissipation strip (3) is arranged on the outer surface of the transformer main body (2), a cooling pipe (6) is arranged outside the heat dissipation strip (3), an auxiliary plate (5) is arranged outside the cooling pipe (6), the linking base (4) is positioned outside the bottom of the transformer main body (2), a connecting shaft (7) is arranged in the middle of the auxiliary plate (5), a protection frame (17) is arranged at the left end of the connecting shaft (7), a motor (18) is arranged inside the protection frame (17), a supporting vertical plate (8) is arranged on the outer surface of the protection frame (17), and a mounting plate (15) is arranged at the bottom of the supporting vertical plate (8), linking plate body (16) are installed to the upper end of mounting panel (15), the fixed hydraulic cylinder (14) that is provided with in external surface of mounting panel (15), adapter rack (9) are installed to the upper end of support riser (8), and the top of adapter rack (9) is provided with bracing piece (10), radiator unit (13) that are used for carrying out the heat dissipation to transformer main part (2) are installed to the upper end of bracing piece (10), and radiator unit (13) include rack (1301), gear (1302), built-in axle (1303) and blade (1304), the inside of rack (1301) is provided with gear (1302), and the internally mounted of gear (1302) has built-in axle (1303), the external surface of built-in axle (1303) is provided with blade (1304).

2. The low-voltage side filter compensation energy-saving rectifying lightning protection transformer according to claim 1, characterized in that two racks (1301) are arranged, and the two racks (1301) are parallel to each other.

3. The low-voltage side filter compensation energy-saving rectifying lightning protection transformer according to claim 1, wherein the gear (1302) and the center of the built-in shaft (1303) are coincident, and the blades (1304) are annularly distributed about the center of the built-in shaft (1303).

4. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 1, wherein the transverse central axis of the auxiliary plate (5) is perpendicular to the vertical central line of the cooling tube (6), and the width of the cooling tube (6) is matched with the width between two adjacent heat dissipation strips (3).

5. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 1, wherein a cover plate (12) is fastened to the top of the support frame (1), and the interior of the support frame (1) is a hollow structure.

6. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 1, wherein a horizontal plate (21) is installed at each of two ends of the outer portion of the supporting vertical plate (8), a connecting hook (20) is arranged on the outer portion of the horizontal plate (21), a bottom rod (23) is installed at the upper end of the connecting hook (20), and a side disc (19) is installed at the upper end of the bottom rod (23).

7. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 6, wherein the side placing discs (19) are tightly attached to the supporting frame (1), and two groups of side placing discs (19) are symmetrically arranged about a vertical center line of the supporting frame (1).

8. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 1, wherein an auxiliary assembly (22) used for dissipating heat inside the auxiliary support frame (1) is arranged inside the side placing disc (19), the auxiliary assembly (22) comprises a connecting spring (2201), a fixing block (2202), a baffle (2203) and a ventilation opening (2204), the fixing block (2202) is installed at the upper end of the connecting spring (2201), the baffle (2203) is fixedly installed at the upper end of the fixing block (2202), and the ventilation opening (2204) is arranged at the rear end of the baffle (2203).

9. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 8, wherein the ventilation opening (2204) and the baffle (2203) are parallel to each other, and the length and the width of the baffle (2203) are both greater than those of the baffle (2203).

10. The low-voltage side filtering compensation energy-saving rectifying lightning protection transformer according to claim 9, wherein the connecting spring (2201) is tightly attached to the bottom rod (23), and the bottom rod (23), the connecting hook (20), the transverse plate (21) and the connecting plate (16) form an Contraband-shaped structure.