CN114039288B - Biological friendly outdoor distribution equipment with nonmetallic components installed in combination - Google Patents

Abstract

The invention provides bio-friendly outdoor power distribution equipment assembled by nonmetallic components, which relates to the technical field of power distribution equipment and comprises a limiting support assembly, wherein the limiting support assembly comprises a limiting column and a limiting base, the limiting column is fixedly arranged at the center of the top surface of the limiting base, a connecting assembly is arranged between adjacent limiting bases, two ends of the connecting assembly are respectively embedded in the two limiting bases, the limiting bases are movably connected with the connecting assembly, a limiting groove is formed in the connecting assembly, a first combination plate and a second combination plate are embedded in the limiting groove, and the first combination plate and the second combination plate are movably connected with the inside of the limiting groove. Adopt mortise and tenon structure, connect the mode through the mortise and tenon between spacing supporting component, coupling assembling, first composition board and the second composition board and form the box, spacing base in spacing supporting component sets up the structure that the four sides can be spacing simultaneously, is convenient for adjust the space of box according to actual environmental demand.

Description

Biological friendly outdoor distribution equipment with nonmetallic components installed in combination

Technical Field

The invention relates to the technical field of power distribution equipment, in particular to bio-friendly outdoor power distribution equipment assembled by nonmetallic components.

Background

The distribution box is a massive parameter on data, generally forms a low-voltage forest according to electric wiring, and requires that switch equipment, a measuring instrument, protection electrical appliances and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or on a screen, so as to form the low-voltage distribution box. The circuit can be switched on or off by means of a manual or automatic switch during normal operation.

The distribution box has the characteristics of small volume, simple and convenient installation, special technical performance, fixed position, unique configuration function, no limit of sites, more common application, stable and reliable operation, high space utilization rate, small occupied area and environmental protection effect. The electric energy distribution device can reasonably distribute electric energy, is convenient for opening and closing the circuit, has higher safety protection level, and can intuitively display the conduction state of the circuit.

The box of present outdoor block terminal is prefabricated, and most all is fixed through the fixed mode of screw to the box of integration is inconvenient in outdoor transportation, and can not install according to the environment on site, and dismantle comparatively troublesome through screw fixed mounting, influences work efficiency, simultaneously, can receive the influence of environment at outdoor block terminal easily, like under the environment such as moist, high temperature, influences the work of distribution equipment.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides the bio-friendly outdoor distribution equipment with the combined installation of nonmetallic components, solves the problems of quick installation and disassembly of an outdoor distribution box, can install the distribution box according to the actual environment, and can solve the problems of high temperature, humidity and the like of the outdoor distribution box.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a biological friendly outdoor distribution equipment of nonmetal components and parts composite installation, includes spacing supporting component, spacing supporting component includes spacing post and spacing base, and spacing post fixed mounting is in spacing base's top surface center, adjacent be equipped with coupling assembling between the spacing base, coupling assembling's both ends inlay respectively inside two spacing bases, and spacing base and coupling assembling swing joint, the spacing groove has been seted up to coupling assembling inside, spacing inslot portion has inlayed first composition board and second composition board, and first composition board, second composition board all with spacing inslot swing joint.

Preferably, the bottom of second composition board is equipped with the embedded block, and the embedded block inlays in spacing inslot portion, the side of second composition board is fixed with the second connecting block, and the second connecting block inlays in spacing post is inside, keeps away from the side of the second composition board of second connecting block is seted up flutedly.

Preferably, the side of first composition board is fixed with first connecting block, and first connecting block inlays inside spacing post, keeps away from first composition board side of first connecting block is fixed with the gag lever post, and the gag lever post inlays inside the recess in the second composition board, and the side of first composition board and second composition board laminate completely, square groove has all been seted up at the bottom surface center of first composition board and second composition board, square groove is inside to be inlayed to have the second stopper, and the inside recess of second stopper through connection assembly.

Preferably, the box is formed in a combined mode among the first combined plate, the second combined plate, the connecting assembly and the limiting support assembly, a heat dissipation drying box is arranged at the bottom end of the box, an upright post is fixed on the bottom surface of the heat dissipation drying box, a heat dissipation assembly is arranged inside the heat dissipation drying box and comprises a driving box, third air cylinders are arranged at corners of the bottom surface of the driving box, the third air cylinders are fixedly arranged on the bottom surface of the inside of the heat dissipation drying box, and the end portions of telescopic rods of the third air cylinders are fixedly connected with the bottom surface of the driving box.

Preferably, the air intake has been seted up to the driving box top, the inner wall of air intake is fixed with the heater strip, be equipped with the flabellum under the heater strip, flabellum center department is fixed with the pivot, and the bottom of pivot and the inside bottom surface swing joint of driving box, the pivot surface has cup jointed from the driving wheel, and from the driving wheel fixed at the pivot surface, the side from the driving wheel is equipped with the action wheel, action wheel and from being equipped with the conveyer belt between the driving wheel, and action wheel and follow the driving wheel through conveyer belt swing joint, be equipped with the motor under the action wheel, and the output shaft and the action wheel fixed connection of motor.

Preferably, the top of driving case is equipped with the backup pad, and the driving case runs through the backup pad, and the inside swing joint of side and backup pad of driving case, backup pad top surface fixed mounting has the second cylinder, the tip of second cylinder is equipped with the shrouding, and the diameter of shrouding is greater than the diameter of air intake.

Preferably, the box top is equipped with spacing apron, the bottom surface turning of spacing apron all is fixed with first stopper, and first stopper all inlays in spacing post inside center department, and the bottom surface of spacing apron and spacing post top laminate completely, the gas outlet has been seted up to the top surface of spacing apron, the inside articulated closing cap that has of gas outlet, be equipped with the spring between the tip of closing cap and the gas outlet inside, and the both ends of spring respectively with closing cap edge, gas outlet inner wall fixed connection, keep away from the closing cap tip of spring is equipped with the clamp plate, and clamp plate and spacing apron top surface swing joint, the tip of clamp plate is equipped with first cylinder, and the flexible end and the clamp plate tip fixed connection of first cylinder.

(III) beneficial effects

The invention provides bio-friendly outdoor power distribution equipment with nonmetal components assembled and installed. The beneficial effects are as follows:

1. the invention adopts the limit supporting component, the limit supporting component is composed of the limit column and the limit base, the limit column is positioned at the center of the limit base, the limit column is in a hollow structure composed of four small columns which are symmetrical with each other, the connecting component is arranged between the two limit columns, two ends of the connecting component are respectively embedded in the limit base in an embedded manner, an integral box bracket can be formed by the four limit supporting components, the integral frame is connected in a limit manner, and the integral box bracket can be directly installed without a connecting tool, and is simple and quick.

2. According to the invention, the first composition board and the second composition board are mutually embedded, in the installation process, the embedded blocks in the second composition board are embedded into the connecting assembly, meanwhile, the second connecting blocks in the second composition board are embedded into the limiting columns, at the moment, the limiting support assembly and the connecting assembly can be completely limited through the second composition board, so that the limiting support assembly and the connecting assembly can not move transversely or longitudinally, the limiting rods in the first composition board are inserted into the grooves in the second composition board, meanwhile, the first connecting blocks in the first composition board are embedded into the corresponding limiting columns, the bottoms of the first composition board are embedded into the limiting grooves in the connecting assembly, the first composition board and the second composition board can be completely fixed in a tenon-and-mortise mode, the installation is simple and quick, the limiting structure is firm, and the working efficiency is high.

3. The heat dissipation assembly is mainly used for working under the conditions that an outdoor distribution box is wet, high-temperature and low-temperature, when the outdoor distribution box is wet, the fan blades rotate, the heating wires are started, the inside of the box body is dried through proper temperature, when the temperature is high, the fan blades rotate, the heating wires are closed, the inside temperature of the box body is cooled through air cooling, when the temperature is low, the fan blades rotate, the heating wires are started, the temperature of the inside of the box body is raised through proper temperature, the service life of the outdoor distribution box is guaranteed, meanwhile, the outdoor distribution box cannot be easily influenced by the environment, and the working quality of the distribution box is improved.

4. According to the invention, a mortise and tenon structure is adopted, the limiting support assembly, the connecting assembly, the first combined plate and the second combined plate are connected in a mortise and tenon mode to form the box body, and meanwhile, the limiting base in the limiting support assembly is provided with a structure capable of limiting on four sides, so that the space of the box body can be conveniently adjusted according to actual environmental requirements.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the heat dissipating assembly of FIG. 2;

FIG. 4 is a top view of the present invention;

FIG. 5 is a schematic perspective view of a spacing support assembly according to the present invention;

FIG. 6 is a top view of the spacing support assembly of the present invention;

FIG. 7 is a schematic view of a partial perspective view of the present invention

FIG. 8 is a schematic perspective view of a second composite board according to the present invention;

FIG. 9 is a plan view of a second composite board according to the present invention;

FIG. 10 is a schematic perspective view of a first composite board according to the present invention;

fig. 11 is a plan view of a first composite board according to the present invention.

1, a first cylinder; 2. a pressing plate; 3. a cover; 4. an air outlet; 5. a limit cover plate; 6. a first composition board; 601. a limit rod; 602. a first connection block; 7. a heat radiation drying box; 8. a connection assembly; 9. a column; 10. a second composite board; 1001. a second connection block; 1002. a groove; 1003. an embedded block; 1004. a square groove; 11. a limit support assembly; 12. a spring; 13. a first limiting block; 14. a second cylinder; 15. a support plate; 16. a sealing plate; 17. a heat dissipation assembly; 1701. an air inlet; 1702. a driving wheel; 1703. a motor; 1704. a conveyor belt; 1705. a drive box; 1706. a rotating shaft; 1707. driven wheel; 1708. a fan blade; 1709. a heating wire; 18. a third cylinder; 19. a case; 20. a limit column; 21. a limit base; 22. a limit groove; 23. and a second limiting block.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one:

referring to fig. 5-11, the bio-friendly outdoor power distribution equipment assembled by nonmetallic components comprises a limiting support assembly 11, wherein the limiting support assembly 11 comprises a limiting column 20 and a limiting base 21, the limiting column 20 is fixedly installed at the center of the top surface of the limiting base 21, a connecting assembly 8 is arranged between adjacent limiting bases 21, two ends of the connecting assembly 8 are respectively embedded in the two limiting bases 21, the limiting bases 21 are movably connected with the connecting assembly 8, a limiting groove 22 is formed in the connecting assembly 8, a first combination plate 6 and a second combination plate 10 are embedded in the limiting groove 22, and the first combination plate 6 and the second combination plate 10 are movably connected with the inside of the limiting groove 22.

Adopt mortise and tenon structure, connect the mode through mortise and tenon between spacing supporting component 11, coupling assembling 8, first composition board 6 and the second composition board 10 and form box 19, spacing base 21 in spacing supporting component 11 sets up the structure that the four sides can be spacing simultaneously, is convenient for adjust the space of box 19 according to actual environmental demand. The spacing supporting component 11 comprises spacing post 20 and spacing base 21, spacing post 20 is located the center of spacing base 21 to spacing post 20 is the hollow out construction that four little cylinder of mutual symmetry are constituteed, installs coupling assembling 8 between two spacing posts 20, and the both ends of coupling assembling 8 are gomphosis respectively inside spacing base 21 through the gomphosis mode, can form holistic box 19 support through four spacing supporting components 11, and whole frame is connected through spacing mode, and the instrument that does not need to connect can direct mount, and is simple quick.

The bottom of second compoboard 10 is equipped with the embedded block 1003, and the embedded block 1003 inlays inside spacing groove 22, the side of second compoboard 10 is fixed with second connecting block 1001, and second connecting block 1001 inlays inside spacing post 20, the recess 1002 has been seted up to the side of second compoboard 10 that keeps away from second connecting block 1001, the side of first compoboard 6 is fixed with first connecting block 602, and first connecting block 602 inlays inside spacing post 20, the side of first compoboard 6 that keeps away from first connecting block 602 is fixed with gag lever post 601, and the gag lever post 601 inlays inside the recess 1002 in second compoboard 10, and the side of first compoboard 6 and second compoboard 10 is laminated completely, square groove 1004 has all been seted up at the bottom surface center of first compoboard 6 and second compoboard 10, square groove 1004 is inside to be inlayed with second stopper 23, and second stopper 23 run through the inside recess 1002 of coupling assembling 8.

The first composition board 6 and the second composition board 10 are mutually embedded, in the installation process, the embedded block 1003 in the second composition board 10 is embedded into the connecting component 8, meanwhile, the second connecting block 1001 in the second composition board 10 is embedded into the limiting post 20, at the moment, the limiting support component 11 and the connecting component 8 can be completely limited through the second composition board 10, the limiting support component 11 and the connecting component 8 are ensured not to move transversely or longitudinally, the limiting rod 601 in the first composition board 6 is inserted into the groove 1002 in the second composition board 10, meanwhile, the first connecting block 602 in the first composition board 6 is embedded into the corresponding limiting post 20, the bottom of the first composition board 6 is embedded into the limiting groove 22 in the connecting component 8, the first composition board 6 and the second composition board 10 can be completely fixed through mortise and tenon joints, the installation is simple and quick, the limiting structure is firm, and the working efficiency is high.

Embodiment two:

referring to fig. 5 to 11, two spacing support assemblies 11 and one connection assembly 8 are connected, then an embedded block 1003 in a second combination board 10 is embedded into a groove 1002 of the connection assembly 8, meanwhile, a second connection block 1001 in the second combination board 10 is embedded into a spacing post 20, at this time, the spacing support assemblies 11 and the connection assemblies 8 can be completely spacing through the second combination board 10, then a spacing rod 601 in a first combination board 6 is inserted into the groove 1002 in the second combination board 10, at this time, a first connection block 602 in the first combination board 6 is embedded into a corresponding spacing post 20, and the bottom of the first combination board 6 is embedded into a spacing groove 22 in the connection assembly 8, at this time, one side of a box 19 is formed, and the whole box 19 can be fixedly mounted through a mortise and tenon structure by analogy.

Embodiment III:

referring to fig. 1-4, a box 19 is formed by combining a first combination board 6, a second combination board 10, a connecting component 8 and a limit supporting component 11, a heat dissipation drying box 7 is arranged at the bottom end of the box 19, a stand column 9 is fixed on the bottom surface of the heat dissipation drying box 7, a heat dissipation component 17 is arranged inside the heat dissipation drying box 7, the heat dissipation component 17 comprises a driving box 1705, third air cylinders 18 are arranged at corners of the bottom surface of the driving box 1705, the third air cylinders 18 are fixedly arranged on the inner bottom surface of the heat dissipation drying box 7, the end parts of telescopic rods of the third air cylinders 18 are fixedly connected with the bottom surface of the driving box 1705, an air inlet 1701 is formed in the top surface of the driving box 1705, a heating wire 1709 is fixed on the inner wall of the air inlet 1701, a fan blade 1708 is arranged under the heating wire 1709, a rotating shaft 1706 is fixed at the center of the fan blade 1708, and the bottom of the rotating shaft 1706 is movably connected with the bottom surface inside the driving box 1705, the driven wheel 1707 is sleeved on the surface of the rotating shaft 1706, the driven wheel 1707 is fixed on the surface of the rotating shaft 1706, a driving wheel 1702 is arranged on the side surface of the driven wheel 1707, a conveyor belt 1704 is arranged between the driving wheel 1702 and the driven wheel 1707, the driving wheel 1702 and the driven wheel 1707 are movably connected through the conveyor belt 1704, a motor 1703 is arranged under the driving wheel 1702, an output shaft of the motor 1703 is fixedly connected with the driving wheel 1702, a supporting plate 15 is arranged at the top of the driving box 1705, the driving box 1705 penetrates through the supporting plate 15, the side surface of the driving box 1705 is movably connected with the inside of the supporting plate 15, a second air cylinder 14 is fixedly arranged on the top surface of the supporting plate 15, a sealing plate 16 is arranged at the end part of the second air cylinder 14, and the diameter of the sealing plate 16 is larger than the diameter of the air inlet 1701.

The box 19 top is equipped with spacing apron 5, the bottom surface turning of spacing apron 5 all is fixed with first stopper 13, and first stopper 13 all inlays in spacing post 20 inside center department, and the bottom surface of spacing apron 5 is laminated completely with spacing post 20 top, gas outlet 4 has been seted up to the top surface of spacing apron 5, gas outlet 4 inside articulates there is closing cap 3, be equipped with spring 12 between closing cap 3's tip and the gas outlet 4 inside, and the both ends of spring 12 respectively with closing cap 3 edges, gas outlet 4 inner wall fixed connection, closing cap 3 tip that keeps away from spring 12 is equipped with clamp plate 2, and clamp plate 2 and spacing apron 5 top surface swing joint, clamp plate 2's tip is equipped with first cylinder 1, and the flexible end of first cylinder 1 and clamp plate 2 tip fixed connection.

The heat dissipation assembly 17 mainly works under the conditions that the outdoor distribution box encounters humidity, high temperature and low temperature:

in the wet condition, the motor 1703 drives the driving wheel 1702, the driving wheel 1702 drives the driven wheel 1707 to rotate through the conveyor belt 1704, the driven wheel 1707 drives the rotating shaft 1706 to rotate, so that the fan blades 1708 rotate, the heating wire 1709 is started, the sealing plate 16 is opened through the second air cylinder 14, the sealing cover 3 is closed, wind generated by rotation of the fan blades 1708 can be changed into hot air through the heating wire 1709, and a certain temperature has a drying effect, so that the inside of the box body 19 can be dried;

under the condition of high temperature, a driving wheel 1702 is driven by a motor 1703, the driving wheel 1702 drives a driven wheel 1707 to rotate by a conveyor belt 1704, the driven wheel 1707 drives a rotating shaft 1706 to rotate, so that a fan blade 1708 rotates, a heating wire 1709 is closed, a sealing plate 16 is opened by a second air cylinder 14, a sealing cover 3 is opened, the temperature inside a cooling box 19 is cooled by air cooling, and the cooling box is discharged through an air outlet 4;

under the condition of low temperature, the motor 1703 drives the driving wheel 1702, the driving wheel 1702 drives the driven wheel 1707 to rotate through the conveyor belt 1704, the driven wheel 1707 drives the rotating shaft 1706 to rotate, so that the fan blades 1708 rotate, the heating wire 1709 is started, the sealing plate 16 is opened through the second air cylinder 14, and the temperature inside the box 19 is raised through a proper temperature;

when the electrical components in the box 19 work normally, the fan blades 1708 are closed, the heating wires 1709 are closed, the sealing plate 16 is attached to the air inlet, and the sealing cover 3 is closed;

when the pressure in the box 19 is too high, the sealing cover 3 at the top of the box 19 automatically bounces through the spring 12, the pressure is released regularly, and after the pressure release is finished, the pressing plate 2 is driven by the first air cylinder 1 to push and press the sealing cover 3 into the air outlet.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 a reference structure" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. Biological friendly outdoor distribution equipment of nonmetal components and parts combination installation, including spacing supporting component (11), its characterized in that: the limiting support assembly (11) comprises limiting columns (20) and limiting bases (21), the limiting columns (20) are fixedly mounted at the centers of the top surfaces of the limiting bases (21), connecting assemblies (8) are arranged between the adjacent limiting bases (21), two ends of each connecting assembly (8) are respectively embedded into the two limiting bases (21), the limiting bases (21) are movably connected with the connecting assemblies (8), limiting grooves (22) are formed in the connecting assemblies (8), first combination plates (6) and second combination plates (10) are embedded into the limiting grooves (22), and the first combination plates (6) and the second combination plates (10) are movably connected with the inside of the limiting grooves (22);

the bottom of the second combined plate (10) is provided with an embedded block (1003), the embedded block (1003) is embedded in the limiting groove (22), a second connecting block (1001) is fixed on the side surface of the second combined plate (10), the second connecting block (1001) is embedded in the limiting column (20), and a groove (1002) is formed in the side surface of the second combined plate (10) far away from the second connecting block (1001);

the side of first composition board (6) is fixed with first connecting block (602), and first connecting block (602) is inlayed inside spacing post (20), keeps away from first composition board (6) side intrinsic gag lever post (601) of first connecting block (602), and gag lever post (601) inlay inside recess (1002) in second composition board (10), and the side of first composition board (6) and second composition board (10) laminate completely, square groove (1004) have all been seted up at the bottom surface center of first composition board (6) and second composition board (10), square groove (1004) are inside to be inlayed second stopper (23), and limit groove (22) in second stopper (23) penetration coupling assembling (8).

2. The bio-friendly outdoor power distribution equipment installed by nonmetallic components according to claim 1, wherein: the novel heat radiation drying box comprises a first composition board (6), a second composition board (10), a connecting assembly (8) and a limiting support assembly (11), wherein a box body (19) is formed by combining the first composition board (6), the second composition board (10), the connecting assembly (8) and the limiting support assembly (11), a heat radiation drying box (7) is arranged at the bottom end of the box body (19), a stand column (9) is fixed to the bottom surface of the heat radiation drying box (7), a heat radiation assembly (17) is arranged inside the heat radiation drying box (7), the heat radiation assembly (17) comprises a driving box (1705), third air cylinders (18) are arranged at the corners of the bottom surface of the driving box (1705), the third air cylinders (18) are fixedly arranged on the inner bottom surface of the heat radiation drying box (7), and the end parts of telescopic rods of the third air cylinders (18) are fixedly connected with the bottom surface of the driving box (1705).

3. The bio-friendly outdoor power distribution equipment installed by nonmetallic components according to claim 2, wherein: the utility model discloses a motor drive unit, including driving case (1705), conveyer belt (1704) are equipped with on the inner wall of driving case (1705), inner wall of driving case (1701) is fixed with heater strip (1709), be equipped with flabellum (1708) under heater strip (1709), flabellum (1708) center department is fixed with pivot (1706), and the bottom of pivot (1706) and the inside bottom surface swing joint of driving case (1705), driven wheel (1707) have been cup jointed on pivot (1707), and driven wheel (1707) are fixed on pivot (1706) surface, the side of driven wheel (1707) is equipped with action wheel (1702), be equipped with conveyer belt (1704) between action wheel (1702) and driven wheel (1707), and be equipped with motor (1703) under action wheel (1702) through conveyer belt (1704), and the output shaft and action wheel (1702) fixed connection of motor (1703).

4. A bio-friendly outdoor distribution equipment installed with non-metal components as claimed in claim 3, wherein: the top of drive case (1705) is equipped with backup pad (15), and drive case (1705) runs through backup pad (15), and the inside swing joint of side and backup pad (15) of drive case (1705), backup pad (15) top surface fixed mounting has second cylinder (14), the tip of second cylinder (14) is equipped with shrouding (16), and the diameter of shrouding (16) is greater than the diameter of air intake (1701).

5. The bio-friendly outdoor power distribution equipment installed by nonmetallic components according to claim 2, wherein: the utility model discloses a box, including box (19), box, air outlet (4), spring (12) are equipped with in box (19), the bottom surface turning of limit cover (5) all is fixed with first stopper (13), and first stopper (13) all inlay in limit post (20) inside center department, and the bottom surface of limit cover (5) is laminated completely with limit post (20) top, gas outlet (4) have been seted up to the top surface of limit cover (5), inside articulated closing cap (3) that have of gas outlet (4), be equipped with spring (12) between the tip of closing cap (3) and gas outlet (4) inside, and the both ends of spring (12) respectively with closing cap (3) edge, gas outlet (4) inner wall fixed connection keep away from closing cap (3) tip of spring (12) are equipped with clamp plate (2), and clamp plate (2) and limit cover (5) top surface swing joint, the tip of clamp plate (2) is equipped with first cylinder (1), and the flexible end of first cylinder (1) and clamp plate (2) tip fixed connection.