CN112164991A

CN112164991A - Cubical switchboard protector

Info

Publication number: CN112164991A
Application number: CN202010983441.3A
Authority: CN
Inventors: 曹远航; 潘栋材
Original assignee: Angao Electric Co ltd
Current assignee: Angao Electric Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-01

Abstract

The invention discloses a switch cabinet protection device, and relates to the technical field of electrical equipment protection. Comprises a shell, a drawing device, an auxiliary device, a damping device, a fixing device and a heat radiating device, wherein the shell is a box body with an opening on the front surface, the opening of the shell is connected with a door plate, the shell is placed on the ground, the drawing device is placed at the bottom in the shell, the auxiliary device is arranged on the drawing device, the damping device is arranged above the drawing device, fixing device sets up in damping device's top, heat abstractor sets up on the top and the side of shell, utilizes and to be provided with three pull groove and pull piece in the below of pull board and have a stable support to the pull board, utilizes a plurality of gyro wheel to reduce the frictional force when the pull board is taken out, makes things convenient for the light pull of staff to go out the cubical switchboard, utilizes to be provided with auxiliary device in the pull piece, utilizes elastic expansion piece to impel the fixed slot with auxiliary block, fixes the pull piece.

Description

Cubical switchboard protector

Technical Field

The invention relates to the technical field of electrical equipment protection, in particular to a switch cabinet protection device.

Background

The switch cabinet (switchcabinet) is an electric device, the outside line of the switch cabinet firstly enters the main control switch in the cabinet and then enters the branch control switch, and each branch circuit is arranged according to the requirement. Such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, some of which are also provided with high-voltage chambers and low-voltage chamber switch cabinets, and high-voltage buses, such as power plants, and some of which are also provided with low-frequency load shedding for keeping main equipment.

The main function of the switch gear is to open, close, control and protect the electric equipment in the process of generating, transmitting, distributing and converting electric energy of the power system. The components in the switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. The classification methods of the switch cabinets are various, for example, the switch cabinets can be divided into movable switch cabinets and fixed switch cabinets by the installation mode of the circuit breaker; or according to different cabinet body structures, the cabinet body can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be divided according to different voltage grades. The method is mainly suitable for various occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light industrial textile, industrial and mining enterprises, residential districts, high-rise buildings and the like.

The protective effect of cubical switchboard among the prior art is not good, and multi-purpose metal outer container cover is in the cubical switchboard outside, and during operating personnel is in the electronic equipment of cubical switchboard when the operation, protector can seriously influence operating personnel's action, great increase operating personnel to the time and the operation degree of difficulty of the maintenance debugging of electronic equipment in the cubical switchboard, and for electronic equipment such as circuit breaker, mutual-inductor can produce the heat in service, need discharge the heat, prevent to influence the normal work of equipment.

Disclosure of Invention

The invention aims to provide a switch cabinet protection device, which solves the technical problem that the protection device of a switch cabinet in the prior art can influence the maintenance and debugging of the switch cabinet and the heat dissipation of the switch cabinet by an operator.

The invention provides a switch cabinet protection device which comprises a shell, a drawing device, an auxiliary device, a damping device, a fixing device and a heat dissipation device, wherein the shell is a box body with an opening in the front, a door plate is connected to the opening of the shell, the shell is placed on the ground, the drawing device is placed at the bottom in the shell, the auxiliary device is arranged on the drawing device, the damping device is arranged above the drawing device, the fixing device is arranged above the damping device, and the heat dissipation device is arranged at the top end and the side end of the shell.

Further, the drawing device comprises a drawing groove, a drawing block, a drawing plate, a handle and a plurality of rollers, wherein the drawing groove is fixedly connected to the bottom in the shell, the drawing block is movably connected to the drawing groove, the drawing groove and the drawing block are three and three, the drawing groove and the drawing block are equidistantly arranged on the bottom plate in the shell, the drawing plate is fixedly connected to the three top end of the drawing block, the handle is fixedly connected to the side end of the drawing plate, the rollers are fixed to the bottom plate of the shell, the rollers are movably connected with the drawing plate, and the rollers are provided with a plurality of rollers which are equidistantly distributed on the bottom plate of the shell.

Further, the auxiliary device comprises a placing groove, two auxiliary blocks, two elastic expansion pieces, a fixing groove and an auxiliary frame, wherein the placing groove is formed in the drawing block, the two auxiliary blocks are placed in the placing groove, the two auxiliary blocks are symmetrically placed in the placing groove, the elastic expansion pieces are placed in the middle of the two auxiliary blocks, two ends of each elastic expansion piece are respectively fixed on the two auxiliary blocks, the fixing groove with the same caliber as the auxiliary blocks is formed in the drawing groove, the trapezoidal groove is formed in each auxiliary block, the auxiliary frame is placed in the placing groove and is in a Y shape, the inclined edges are formed in two symmetrical ends of the auxiliary frame, and one independent end of the auxiliary frame penetrates through the placing groove and is exposed outside the drawing block.

Further, the damping device comprises a positioning hole, a positioning column, a placing plate, a first spring, a first linkage rod, a second linkage rod and a second spring, wherein the positioning hole is formed in the drawing plate, one end of the positioning column is movably connected with the positioning hole in the drawing plate, the bottom of the placing plate is fixedly connected with the other end of the positioning column, the first spring is sleeved on the positioning column, two ends of the first spring are respectively and fixedly connected with the surfaces of the drawing plate and the placing plate, one end of the first linkage rod is connected with the bottom of the placing plate, one end of the second linkage rod is connected with the top of the drawing plate, the other end of the first linkage rod is connected with the other end of the second linkage rod, the first linkage rod and the second linkage rod are respectively provided with four linkage rods, and the four linkage rods are symmetrically distributed around the positioning column, the two ends of the second spring are respectively fixed at the joint of the first linkage rod and the second linkage rod, the damping device is provided with a plurality of damping devices which are uniformly distributed between the placing plate and the drawing plate.

Further, the fixing device comprises a fixed rod, a movable block, support plates, gears, fixed columns, clamping plates and a third spring, one end of the fixed rod is fixedly connected to the surface of the pull plate, the other end of the fixed rod penetrates through a hole formed in the placing plate to be movably connected with the placing plate, tooth grooves are formed in the fixed rod, the movable block is arranged on the placing plate and movably connected with the placing plate, the movable block is U-shaped and is arranged on two sides of the fixed rod, the tooth grooves are formed in the movable block, the support plates are fixedly connected to the placing plate, the two support plates are symmetrically arranged on two sides of the movable block, two ends of each gear are respectively and movably connected to the surfaces of the two support plates, the gears are meshed with the fixed rod and the movable block, and one end of each fixed column is fixedly connected to the movable block, the clamp plate is provided with a hole, the hole is movably connected with the other end of the fixed column, the third spring is sleeved on the fixed column, one end of the third spring is fixedly connected to the moving block, the other end of the third spring is fixedly connected to the clamp plate, the number of the fixed column and the number of the third spring are two, the number of the fixing devices is two, and the two fixing devices are symmetrically arranged on two sides of the placing plate.

Further, the cross section of the gear is I-shaped.

Further, heat abstractor is including sheltering from post, fan, heat dissipation motor and open-close board, the air inlet has been seted up at the top of shell, shelters from the top of post fixed connection at the shell, shelter from the post setting on the air inlet at shell top, fan swing joint is in the air inlet at shell top, the one end of sheltering from the post is kept away from at the shell top to heat dissipation motor fixed connection, the fan is connected with the meshing of heat dissipation motor, the thermovent has been seted up to the side of shell, be provided with the open-close board on the shell thermovent.

Furthermore, the shielding column is in a circular truncated cone shape, and the bottom end of the shielding column is lower than the air inlet on the shell.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the three drawing grooves and the drawing blocks are arranged below the drawing plate to stably support the drawing plate, the friction force generated when the drawing plate is drawn out is reduced by the rollers, the drawing switch cabinet is convenient for workers to draw out easily, the auxiliary device is arranged in the drawing blocks, the auxiliary blocks are pushed into the fixing grooves by the elastic expansion pieces, the drawing blocks are fixed to push the auxiliary frame, the auxiliary blocks are inwards extruded by the inclined edges on the auxiliary frame, the fixing of the drawing blocks can be eliminated, and the problem that the working staff can influence the reverse work when overhauling in the prior art is solved.

Secondly, in the invention, the heat dissipation motor arranged at the top of the shell is used for driving the fan to suck in external air, the opening plate is opened to dissipate hot air, the problem of heat dissipation in the prior art is solved, and the shielding plate in the shape of a circular truncated cone at the top prevents rainwater from entering.

Thirdly, in the invention, the cross section of the gear is in an I shape, the fixed rod is meshed with the gear with a short distance to drive the gear with a small middle diameter to rotate, the gear with a large diameter is driven to be meshed with the gear with a small middle diameter to drive the movable block to move for a long distance, the moving distance of the movable block is increased, the third spring can be used for strengthening the fixation of the clamping plate on the switch cabinet, and the damage is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

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

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

FIG. 3 is an enlarged schematic view at A of FIG. 2 of the present invention;

FIG. 4 is a partial cross-sectional view of the drawer and damper assembly of the present invention;

FIG. 5 is a cross-sectional view of a pull groove and pull block of the present invention;

FIG. 6 is an enlarged view of the invention at B of FIG. 4;

fig. 7 is an enlarged view of the invention at C of fig. 4.

Reference numerals: the device comprises a shell 1, a door panel 11, a drawing device 2, a drawing groove 21, a drawing block 22, a drawing plate 23, a handle 24, a roller 25, an auxiliary device 3, a placing groove 31, an auxiliary block 32, an elastic expansion piece 33, a fixing groove 34, an auxiliary frame 35, a damping device 4, a positioning hole 41, a positioning column 42, a placing plate 43, a first spring 44, a first linkage rod 45, a second linkage rod 46, a second spring 47, a fixing device 5, a fixing rod 51, a moving block 52, a supporting plate 53, a gear 54, a fixing column 55, a clamping plate 56, a third spring 57, a heat dissipation device 6, a shielding column 61, a fan 62, a heat dissipation motor 63 and an opening plate 64.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, the invention provides a switch cabinet protection device, which includes a housing 1, a drawing device 2, an auxiliary device 3, a damping device 4, a fixing device 5 and a heat dissipation device 6, wherein the housing 1 is a box with an opening on the front side, a door panel 11 is connected to an opening of the housing 1, the housing 1 is placed on the ground, the drawing device 2 is placed at the bottom inside the housing 1, the auxiliary device 3 is arranged on the drawing device 2, the damping device 4 is arranged above the drawing device 2, the fixing device 5 is arranged above the damping device 4, and the heat dissipation device 6 is arranged at the top end and the side end of the housing 1.

Preferably, the drawing device 2 comprises a drawing groove 21, a drawing block 22, a drawing plate 23, a handle 24 and rollers 25, the drawing groove 21 is fixedly connected to the bottom of the housing 1, the drawing block 22 is movably connected to the drawing groove 21, the drawing groove 21 and the drawing block 22 are three, the three drawing grooves 21 and the three drawing blocks 22 are equidistantly placed on the bottom plate of the housing 1, the drawing plate 23 is fixedly connected to the top ends of the three drawing blocks 22, the handle 24 is fixedly connected to the side end of the drawing plate 23, the rollers 25 are fixed to the bottom plate of the housing 1, the rollers 25 are movably connected to the drawing plate 23, the rollers 25 are provided with a plurality of rollers 25, the plurality of rollers 25 are equidistantly distributed on the bottom plate of the housing 1, and the drawing groove 21 is arranged at the bottom of the housing 1, the drawing block 22 is fixedly connected to the bottom of the drawing plate 23, can let pull board 23 convenient activity on the bottom plate of shell 1 through handle 24, during the staff overhauls, can conveniently take out the cubical switchboard through pull board 23, conveniently overhauls, and is three pull groove 21 and three pull piece 22 has strengthened the support to pull board 23, through set up a plurality of gyro wheel 25 in pull board 23 bottom, frictional force when having reduced pull board 23 pull makes things convenient for the light pull cubical switchboard of staff.

Preferably, the auxiliary device 3 includes a placement groove 31, auxiliary blocks 32, two elastic expansion pieces 33, two fixing grooves 34 and an auxiliary frame 35, the placement groove 31 is formed in the drawing block 22, the auxiliary blocks 32 are placed in the placement groove 31, the two auxiliary blocks 32 are provided, the two auxiliary blocks 32 are symmetrically placed in the placement groove 31, the elastic expansion piece 33 is placed between the two auxiliary blocks 32, both ends of the elastic expansion piece 33 are respectively fixed on the two auxiliary blocks 32, the drawing groove 21 is provided with the fixing groove 34 having the same diameter as that of the auxiliary block 32, the auxiliary block 32 is provided with a trapezoidal groove, the auxiliary frame 35 is placed in the placement groove 31, the auxiliary frame 35 is Y-shaped, both symmetrical oblique sides of the auxiliary frame 35 are provided, a single end of the auxiliary frame 35 passes through the placement groove 31 and is exposed outside the drawing block 22, and functions as, through placing supplementary piece 32 in standing groove 31 under the promotion of elastic expansion piece 33, remove to both ends, supplementary piece 32 stretches into in fixed slot 34, fix pull piece 22, fix pull device 2, remove when preventing not using, place supplementary frame 35 in standing groove 31 through the promotion, the dovetail groove in supplementary piece 32 is passed at both ends that utilize supplementary frame 35Y type, supplementary frame 35 has the supplementary piece 32 inward movement of two extrusion of hypotenuse, leave fixed slot 34, remove the fixed to pull piece 22, simple and fast fixes removal to pull device 2.

Preferably, the damping device 4 comprises a positioning hole 41, a positioning column 42, a placing plate 43, a first spring 44, a first linkage rod 45, a second linkage rod 46 and a second spring 47, the pulling plate 23 is provided with the positioning hole 41, one end of the positioning column 42 is movably connected with the positioning hole 41 on the pulling plate 23, the bottom of the placing plate 43 is fixedly connected with the other end of the positioning column 42, the first spring 44 is sleeved on the positioning column 42, two ends of the first spring 44 are respectively and fixedly connected with the surfaces of the pulling plate 23 and the placing plate 43, one end of the first linkage rod 45 is connected with the bottom of the placing plate 43, one end of the second linkage rod 46 is connected with the top of the pulling plate 23, the other end of the first linkage rod 45 is connected with the other end of the second linkage rod 46, the first linkage rod 45 and the second linkage rod 46 are respectively provided with four linkage rods, the four first linkage rods 45 and the four second linkage rods 46 are symmetrically distributed around the positioning column 42, two ends of the second spring 47 are respectively fixed at the joint of the two first linkage rods 45 and the second linkage rod 46, a plurality of shock absorbing devices 4 are arranged, the plurality of shock absorbing devices 4 are uniformly distributed between the placing plate 43 and the drawing plate 23, the damping device has the effects that the second springs 47 support the placing plate 43 for damping, vibration of the switch cabinet caused by drawing or earthquake is reduced, damage to the switch cabinet is reduced, the deviation of the damping device 4 is solved by the aid of the positioning columns 42, stability of the damping device is guaranteed, the second springs 47 play a reinforcing role in damping between the first linkage rod 45 and the second linkage rod 46, and damage to the damping device 4 due to momentary large force is prevented.

Preferably, the fixing device 5 includes a fixing rod 51, a moving block 52, a supporting plate 53, a gear 54, a fixing column 55, a clamping plate 56 and a third spring 57, one end of the fixing rod 51 is fixedly connected to the surface of the drawing plate 23, the other end of the fixing rod 51 passes through a hole formed in the placing plate 43 and is movably connected to the placing plate 43, a tooth socket is formed in the fixing rod 51, the moving block 52 is disposed on the placing plate 43, the moving block 52 is movably connected to the placing plate 43, the moving block 52 is U-shaped, the moving block 52 is disposed on both sides of the fixing rod 51, a tooth socket is formed in the moving block 52, the supporting plate 53 is fixedly connected to the placing plate 43, two supporting plates 53 are disposed, the two supporting plates 53 are symmetrically disposed on both sides of the moving block 52, both ends of the gear 54 are respectively movably connected to the surfaces, the gear 54 is engaged with the fixed rod 51 and the moving block 52, one end of the fixed column 55 is fixedly connected to the moving block 52, a hole formed in the clamping plate 56 is movably connected with the other end of the fixed column 55, the third spring 57 is sleeved on the fixed column 55, one end of the third spring 57 is fixedly connected to the moving block 52, the other end of the third spring 57 is fixedly connected to the clamping plate 56, two fixed columns 55 and two third springs 57 are arranged, the two fixing devices 5 are symmetrically arranged on two sides of the placing plate 43, and the two fixing devices 5 are used for driving the gear 54 on the supporting plate 53 to descend through descending of the placing plate 43, the gear 54 is engaged with tooth grooves on the fixed rod 51 to rotate, the moving block 52 is driven to move inwards to drive the clamping plate 56 to move inwards, and the clamping plates 56 on the two fixing devices 5 clamp and fix the switch cabinet, the third spring 57 on the fixing column 55 plays a role in buffering the clamping plate 56, prevents the clamping plate 56 from damaging the switch cabinet due to excessive force, and plays a better role in fixing the switch cabinet.

Preferably, the cross section of the gear 54 is i-shaped, and the function of the gear 54 is that the diameter of the part, meshed with the fixed rod 51, of the gear 54 is smaller than that of the part, meshed with the moving block 52, and when the gear 54 rotates in a meshed manner in the tooth groove of the fixed rod 51, the moving distance of the moving block 52 can be increased, so that the switch cabinet can be better fixed.

Preferably, heat abstractor 6 is including sheltering from post 61, fan 62, heat dissipation motor 63 and open close plate 64, the air inlet has been seted up at the top of shell 1, shelters from post 61 fixed connection on the top of shell 1, shelter from post 61 and set up on the air inlet at shell 1 top, fan 62 swing joint is in the air inlet at shell 1 top, heat dissipation motor 63 fixed connection keeps away from the one end of sheltering from post 61 at shell 1 top, fan 62 is connected with the meshing of heat dissipation motor 63, the thermovent has been seted up to the side of shell 1, be provided with open close plate 64 on the thermovent of shell 1, its effect lies in that heat dissipation motor 63 through shell 1 top drives fan 62 and rotates the air suction with the outside, and the inside just heat that generates distributes away through the thermovent reaches radiating effect.

Preferably, the shielding column 61 is in a circular truncated cone shape, the bottom end of the shielding column 61 is lower than the air inlet on the shell 1, and the function of the shielding column is that when raining, rainwater cannot enter the interior from the air inlet, so that the fault is prevented.

The working principle is as follows: the bottom of the shell 1 is provided with the drawing groove 21, the bottom of the drawing plate 23 is fixedly connected with the drawing block 22, the drawing plate 23 can be conveniently moved on the bottom plate of the shell 1 through the handle 24, when a worker overhauls the switch cabinet, the switch cabinet can be conveniently drawn out through the drawing plate 23, the overhauling is convenient, the drawing groove 21 and the drawing block 22 are three, the support for the drawing plate 23 is enhanced, the bottom of the drawing plate 23 is provided with the plurality of rollers 25, the friction force when the drawing plate 23 is drawn is reduced, the easy drawing switch cabinet is convenient for the worker, the auxiliary block 32 placed in the placing groove 31 is pushed by the elastic expansion piece 33 to move towards two ends, the auxiliary block 32 extends into the fixing groove 34 to fix the drawing block 22, the drawing device 2 is fixed, the movement when the switch cabinet is not used is prevented, and the auxiliary frame 35 placed in the placing groove 31 is pushed, the two ends of the Y-shaped auxiliary frame 35 penetrate through the trapezoidal grooves in the auxiliary block 32, the two ends of the auxiliary frame 35 with the inclined edges extrude the auxiliary block 32 to move inwards, the auxiliary frame 35 leaves the fixed groove 34 to release the fixation of the drawing block 22, the drawing device 2 is simply and quickly released, the placing plate 43 is supported and damped by the plurality of second springs 47, the vibration of the switch cabinet caused by drawing or earthquake is reduced, the damage of the switch cabinet is reduced, the deviation of the damping device 4 is solved by the positioning columns 42, the stability of the device is ensured, the damping effect is enhanced between the first linkage rod 45 and the second linkage rod 46 by the second springs 47, the damping device 4 is prevented from being damaged due to instant large force, the gear 54 on the supporting plate 53 is driven to descend by the descending of the placing plate 43, the gear 54 is meshed with the tooth grooves on the fixed rod 51 to rotate, the moving block 52 is driven to move inwards to drive the clamping plate 56 to move inwards, the switch cabinet is clamped and fixed by the clamping plates 56 on the two fixing devices 5, the third springs 57 on the fixing columns 55 play a role in buffering the clamping plates 56, the situation that the switch cabinet is damaged due to overlarge force of the clamping plates 56 is prevented, the switch cabinet also plays a better fixing role, the diameters of the parts, meshed and connected with the fixing rods 51, of the gears 54 are smaller than those of the parts, meshed and connected with the moving blocks 52, when the gears 54 rotate on the fixing rods 51 in a tooth groove meshed mode, the moving distance of the moving blocks 52 can be increased, the switch cabinet can be better fixed, the fans 62 are driven to rotate by the heat-burning motor on the top end of the shell 1 to suck outside air, and then heat generated inside is dissipated out through the heat dissipation ports, so that a heat dissipation effect is achieved, when rain falls, rainwater cannot enter the inside from the air inlet, and.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a cubical switchboard protector which characterized in that: including shell (1), pull device (2), auxiliary device (3), damping device (4), fixing device (5) and heat abstractor (6), shell (1) is positive open-ended box, shell (1) opening part has concatenated door plant (11), shell (1) is placed subaerial, the bottom in shell (1) is placed in pull device (2), auxiliary device (3) set up on pull device (2), damping device (4) set up the top in pull device (2), fixing device (5) set up the top in damping device (4), heat abstractor (6) set up the top and the side at shell (1).

2. A switchgear cabinet protection device according to claim 1, characterized in that: the drawing device (2) comprises a drawing groove (21), a drawing block (22), a drawing plate (23), a handle (24) and a roller (25), the drawing groove (21) is fixedly connected with the bottom in the shell (1), the drawing block (22) is movably connected in the drawing groove (21), the number of the drawing grooves (21) and the number of the drawing blocks (22) are three, the three drawing grooves (21) and the three drawing blocks (22) are equidistantly arranged on a bottom plate in the shell (1), the drawing plate (23) is fixedly connected with the top ends of the three drawing blocks (22), the handle (24) is fixedly connected with the side end of the pull plate (23), the roller (25) is fixed on the bottom plate of the shell (1), the roller (25) is movably connected with the drawing plate (23), the roller (25) is provided with a plurality of rollers (25) which are distributed on the bottom plate of the shell (1) at equal intervals.

3. A switchgear cabinet shielding device as claimed in claim 2, characterized in that: the auxiliary device (3) comprises a placing groove (31), auxiliary blocks (32), elastic telescopic pieces (33), fixing grooves (34) and auxiliary frames (35), the placing groove (31) is formed in the drawing block (22), the auxiliary blocks (32) are placed in the placing groove (31), the number of the auxiliary blocks (32) is two, the two auxiliary blocks (32) are symmetrically placed in the placing groove (31), the elastic telescopic pieces (33) are placed between the two auxiliary blocks (32), two ends of each elastic telescopic piece (33) are respectively fixed on the two auxiliary blocks (32), the fixing grooves (34) with the same caliber as that of the auxiliary blocks (32) are formed in the drawing groove (21), trapezoidal grooves are formed in the auxiliary blocks (32), the auxiliary frames (35) are placed in the placing groove (31), the auxiliary frames (35) are Y-shaped, and inclined edges are formed at two symmetrical ends of the auxiliary frames (35), a single end of the auxiliary frame (35) passes through the placing groove (31) and is exposed out of the drawing block (22).

4. A switchgear cabinet shielding device as claimed in claim 2, characterized in that: the damping device (4) comprises a positioning hole (41), a positioning column (42), a placing plate (43), a first spring (44), a first linkage rod (45), a second linkage rod (46) and a second spring (47), wherein the positioning hole (41) is formed in the drawing plate (23), one end of the positioning column (42) is movably connected with the positioning hole (41) in the drawing plate (23), the bottom of the placing plate (43) is fixedly connected with the other end of the positioning column (42), the first spring (44) is sleeved on the positioning column (42), two ends of the first spring (44) are respectively and fixedly connected to the surfaces of the drawing plate (23) and the placing plate (43), one end of the first linkage rod (45) is connected to the bottom of the placing plate (43), one end of the second linkage rod (46) is connected to the top of the drawing plate (23), and the other end of the first linkage rod (45) is connected with the other end of the second linkage rod (46), first gangbar (45) and second gangbar (46) pole are provided with four respectively, four first gangbar (45) and four second gangbar (46) pole symmetric distribution is around reference column (42), the both ends of second spring (47) are fixed respectively two first gangbar (45) with the linking department of second gangbar (46) pole, damping device (4) are provided with a plurality of, a plurality of damping device (4) even distribution is in the middle of placing board (43) and pull board (23).

5. A switchgear cabinet shielding arrangement as claimed in claim 4, characterized in that: the fixing device (5) comprises a fixing rod (51), a moving block (52), a supporting plate (53), a gear (54), a fixing column (55), a clamping plate (56) and a third spring (57), one end of the fixing rod (51) is fixedly connected to the surface of the drawing plate (23), the other end of the fixing rod (51) penetrates through a hole formed in the placing plate (43) to be movably connected with the placing plate (43), a tooth groove is formed in the fixing rod (51), the moving block (52) is arranged on the placing plate (43), the moving block (52) is movably connected with the placing plate (43), the moving block (52) is U-shaped, the moving block (52) is arranged on two sides of the fixing rod (51), the tooth groove is formed in the moving block (52), the supporting plate (53) is fixedly connected to the placing plate (43), and two supporting plates (53) are arranged, the two supporting plates (53) are symmetrically arranged at two sides of the moving block (52), two ends of the gear (54) are respectively movably connected on the surfaces of the two supporting plates (53), the gear (54) is meshed with the fixed rod (51) and the moving block (52), one end of the fixed column (55) is fixedly connected to the moving block (52), a hole formed in the clamping plate (56) is movably connected with the other end of the fixed column (55), the third spring (57) is sleeved on the fixed column (55), one end of the third spring (57) is fixedly connected to the moving block (52), the other end of the third spring (57) is fixedly connected to the clamping plate (56), the number of the fixing columns (55) and the number of the third springs (57) are two, the number of the fixing devices (5) is two, and the two fixing devices (5) are symmetrically arranged on two sides of the placing plate (43).

6. A switchgear cabinet shielding arrangement as claimed in claim 5, characterized in that: the cross section of the gear (54) is I-shaped.

7. A switchgear cabinet protection device according to claim 1, characterized in that: heat abstractor (6) is including shielding post (61), fan (62), heat dissipation motor (63) and open close board (64), the air inlet has been seted up at the top of shell (1), shielding post (61) fixed connection is on the top of shell (1), shielding post (61) sets up on the air inlet at shell (1) top, fan (62) activity swing joint is in the air inlet at shell (1) top, the one end that shields post (61) is kept away from at shell (1) top to heat dissipation motor (63) fixed connection, fan (62) are connected with heat dissipation motor (63) meshing, the thermovent has been seted up to the side of shell (1), be provided with open close board (64) on shell (1) thermovent.

8. A switchgear cabinet shielding arrangement as claimed in claim 7, characterized in that: the shielding column (61) is in a circular truncated cone shape, and the bottom end of the shielding column (61) is lower than the air inlet on the shell (1).