CN115764638A - Explosion-proof drawer type low-voltage switchgear - Google Patents

Abstract

The invention relates to the technical field of switch cabinets, in particular to an explosion-proof drawer type low-voltage switch cabinet which comprises a supporting shell, drawing mechanisms are arranged in the supporting shell in a sliding mode at equal intervals, positioning buckle plates are fixedly arranged on two sides of the front end of the supporting shell at equal intervals, grid baffle frames are fixedly arranged in two ends of the supporting shell, a heat dissipation device comprises a fan, a movable sliding plate, a convex rod, a rotating wheel, a protective cover plate, a third reset spring, a second cleaning scraper blade, a worm and a worm wheel, the worm is symmetrically and fixedly arranged on the rear end of the fan, the worm wheel is meshed with the top end of the worm, the protective cover plate is fixedly arranged on two ends of the fan, the worm wheel penetrates through the protective cover plate and is fixedly arranged in the center of the inner side of the rotating wheel, the convex rod is fixedly arranged on the top end of the rotating wheel, and the movable sliding plates are connected to the top end and the bottom end of the inner portion of the protective cover plate in a sliding mode. Through the arrangement of the extracting mechanism, the purpose of quickly dissipating the heat inside the drawer is achieved.

Description

Explosion-proof drawer type low-voltage switchgear

Technical Field

The invention relates to the technical field of switch cabinets, in particular to an explosion-proof drawer type low-voltage switch cabinet.

Background

The drawer type low-voltage switch cabinet is a cabinet body improved based on the switch cabinet, and has the characteristics of strong safety performance, high standardization, compact structure and the like, so that the drawer type low-voltage switch cabinet can be widely applied to power transmission, power distribution and electric energy conversion.

At present, drawer type low-voltage switchgear on the market is when using, because the inside unified cooling system that only adopts of switch board, and the inside drawer of drawer type low-voltage switchgear is more, and unified cooling system can't carry out effectual heat dissipation with every drawer inside, causes the inside phenomenon that the high temperature appears of drawer, causes circuit trouble and the phenomenon of burning out, consequently needs an equipment to improve it to above-mentioned problem.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an explosion-proof drawer type low-voltage switch cabinet.

The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides an explosion-proof type drawer type low-voltage switchgear, includes supporting shell, supporting shell's inside equidistance slidable mounting has extraction mechanism, equidistance fixed mounting has the location buckle on supporting shell's the front end both sides, the inside fixed mounting in both ends of supporting shell has check to keep off the frame, heat abstractor includes fan, activity slide, nose bar, runner, protective cover board, third reset spring, second pass and cleans scraper blade, worm and worm wheel, worm symmetry fixed mounting is on the rear end of fan, the worm wheel meshing is on the top of worm, protective cover board fixed mounting is on the both ends of fan, just the worm wheel runs through protective cover board fixed mounting at the inboard center of runner, nose bar fixed mounting is on the top of runner, activity slide slides and pegs graft at protective cover board's inside top and bottom, just third reset spring fixed mounting is on activity slide's bottom and top, the second passes and cleans scraper blade fixed mounting on activity slide's front end.

Specifically, the extraction mechanism is including placing subassembly and positioner, positioner equidistance slidable mounting is in the inside of placing the subassembly.

Specifically, positioner includes nut, spacing crossbearer, screw rod, positioning bolt, feather key and U type rack, feather key fixed mounting is on the both sides top of U type rack, the positioning bolt screw thread is pegged graft in the top four corners of U type rack, the screw rod slides and pegs graft inside the top of U type rack, spacing crossbearer slidable mounting is on the screw rod, just the nut screw thread cup joints on the top and the bottom of screw rod.

Specifically, the placing assembly comprises a locking device, a containing device and a heat dissipation device, the containing device is slidably mounted inside the locking device, and the heat dissipation device is fixedly mounted inside the rear end of the locking device.

Specifically, locking device includes preceding baffle, locating pin, butt joint groove, first reset spring, handle, gear, rack, counterpoint inserted bar, button switch, second reset spring, support slide bar, guide way, first tank tower and the trigger bar of placing, butt joint groove fixed mounting is on the front end of preceding baffle, the gear revolve installs the inside center at the preceding baffle, handle fixed mounting is in the front end center of gear, first reset spring fixed mounting is in the inside bottom of handle, locating pin fixed mounting is on first reset spring's top, rack toothing is in the top and the bottom of gear, counterpoint inserted bar fixed mounting is kept away from on the gear one end, first tank tower fixed mounting is on the rear end of preceding baffle, button switch fixed mounting is inside the first front end of placing the tank tower, second reset spring fixed mounting is inside the first front end of placing the tank tower, just second reset spring is located button switch's top, trigger bar fixed mounting is on second reset spring's top, the guide way is opened and is established at first both ends of placing the tank tower inside the slide bar is in the front four corners of support baffle installation.

Specifically, accommodate device includes draw-in groove, filter screen and second and places the tank bracket, the draw-in groove is seted up on the inside both sides of tank bracket is placed to the second, the filter screen slides and pegs graft inside the both ends of tank bracket are placed to the second.

Specifically, support housing includes spacing strake, jack and shell, spacing strake equidistance fixed mounting is at the inside both ends of shell, the jack equidistance is seted up inside the front end of shell.

Specifically, the sliding key slides and is inserted in the clamping groove, the support sliding rod slides and is inserted in the insertion hole, the trigger rod is vertically aligned with the limit edge, the second placing groove frame is slidably mounted in the first placing groove frame, the fan is fixedly mounted in the rear end of the first placing groove frame, and the second cleaning scraper slides and is inserted in the guide groove.

Specifically, the round hole with counterpoint inserted bar looks adaptation is all seted up to the inside of the both ends of location buckle and preceding baffle, the top center of U type rack set up with the activity jack of screw rod looks adaptation, the inside bottom fixed mounting of U type rack has the insulating layer, button switch has electric connection with the fan, set point hole with locating pin looks adaptation is seted up to the inside in butt joint groove, the both ends bottom that the cell-rack was placed to the second is seted up with the ann jack of filter screen looks adaptation, the second passes the lateral surface laminating that cleans the side that the scraper blade is close to the fan and filter screen, the front end bottom of spacing strake is 45 slopes settings from high to low, fixed mounting has vertical feather key on the both ends that the cell-rack was placed to the second, just the counterpoint spout with vertical feather key looks adaptation is seted up at the inside both ends of first cell-rack.

Specifically, support housing still includes the radiating groove and raises the base plate, the radiating groove equidistance is seted up inside the front end of raising the base plate, just raise base plate fixed mounting in the bottom of shell.

The invention has the beneficial effects that:

according to the invention, through the combined arrangement of the accommodating device and the heat radiating device, when the fan is started, the heat radiating work can be carried out on the inner part of the first placing groove frame, meanwhile, the fan can also drive the worm to rotate, so that the worm wheel and the rotating wheel rotate simultaneously, the movable sliding plate can slide up and down, the dust and impurities on the outer side surface of the filter screen can be cleaned when the second conveying cleaning scraper plate moves, and meanwhile, the movable sliding plate can be driven to return to the original position in time through the elasticity of the third return spring when not in contact with the convex rod, so that the ventilation efficiency of the filter screen can be improved.

Secondly, through the arrangement of the locking device, when the first placing groove frame moves towards the inside of the shell to be reset, the front baffle plate can be driven to be aligned with the positioning buckle plate, the positioning pin is pressed downwards, the handle is rotated at the same time, so that the gear can be driven to rotate, the rack and the alignment insertion rod can be driven to move outwards at the same time, when the handle drives the positioning pin to rotate to be aligned with the butt joint groove, the alignment insertion rod can be driven to penetrate through the front baffle plate to be inserted into the inside of the positioning buckle plate, at the moment, the positioning pin can be loosened, and the positioning pin can be driven to be rapidly inserted into the inside of the butt joint groove through the elasticity of the first reset spring, so that the first placing groove frame can be locked in the supporting shell, and the first placing groove frame is prevented from falling outwards.

Third, through raising base plate fixed mounting in the bottom of shell for can prevent that the shell is direct and ground contact, thereby can prevent the inside of the moisture infiltration shell on ground, simultaneously, through seting up inside the front end of raising the base plate of radiating groove, make can promote the ventilative efficiency of raising the base plate bottom, make can prevent to raise the inside moisture that stores up of base plate.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a front perspective view of the main body of the present invention;

FIG. 2 is a front perspective view of the drawer mechanism of the present invention;

FIG. 3 is a front perspective view of the positioning device of the present invention;

FIG. 4 is a front perspective view of the placement module of the present invention;

FIG. 5 is a schematic view in partial cross-section of a locking device of the present invention;

FIG. 6 is a front perspective view of the container of the present invention;

FIG. 7 is a front perspective view of the heat dissipation device of the present invention;

FIG. 8 is a perspective view of the heat dissipation device of the present invention;

FIG. 9 is a front perspective view of the support housing of the present invention;

fig. 10 is a front perspective view of a support housing according to a second embodiment of the present invention.

In the figure: 1-drawing mechanism, 2-supporting shell, 3-check frame, 4-positioning buckle plate, 5-placing component, 6-positioning device, 7-nut, 8-limiting cross frame, 9-screw rod, 10-positioning bolt, 11-sliding key, 12-U type placing frame, 13-locking device, 14-containing device, 15-heat-radiating device, 16-front baffle plate, 17-positioning pin, 18-butt joint groove, 19-first reset spring, 20-handle, 21-gear, 22-rack, 23-contraposition inserted bar, 24-button switch, 25-second reset spring, 26-supporting slide bar, 27-guide groove, 28-first placing groove frame, 29-trigger bar, 30-clamping groove, 31-filter screen, 32-second placing groove frame, 33-fan, 34-movable sliding plate, 35-convex bar, 36-rotating wheel, 37-protective cover plate, 38-third reset spring, 39-second transmission scraper, 40-worm, 41-worm wheel, 42-jack, 43-44-heat-radiating groove, and lifting base plate, 46-lifting edge strip.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The invention is further described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1, 7 and 8, the explosion-proof drawer type low-voltage switch cabinet of the invention comprises a supporting shell 2, wherein the drawing mechanisms 1 are equidistantly and slidably mounted in the supporting shell 2, positioning buckle plates 4 are equidistantly and fixedly mounted on two sides of the front end of the supporting shell 2, grid frames 3 are fixedly mounted in two ends of the supporting shell 2, a heat dissipation device 15 comprises a fan 33, a movable sliding plate 34, a convex rod 35, a rotating wheel 36, a protective cover plate 37, a third return spring 38, a second conveying cleaning scraper 39, a worm 40 and a worm wheel 41, the worm 40 is symmetrically and fixedly mounted on the rear end of the fan 33, the worm wheel 41 is meshed on the top end of the worm 40, the protective cover plate 37 is fixedly mounted on two ends of the fan 33, the worm wheel 41 penetrates through the protective cover plate 37 and is fixedly mounted in the center of the inner side of the rotating wheel 36, the convex rod 35 is fixedly mounted on the top end of the rotating wheel 36, the movable sliding plate 34 slides on the top end and bottom end of the inner part of the protective cover plate 37, the third return spring 38 is fixedly mounted on the bottom end and top end of the movable sliding plate 34, and the second conveying cleaning scraper 39 is fixedly mounted on the front end of the movable sliding plate 34.

As shown in fig. 2, the extracting mechanism 1 comprises a placing component 5 and a positioning device 6, wherein the positioning device 6 is installed inside the placing component 5 in a sliding mode at equal intervals, and the positioning device 6 can be supported for adjusting work through the arrangement of the placing component 5.

As shown in fig. 3, the positioning device 6 comprises a nut 7, a limiting cross frame 8, a screw rod 9, a positioning bolt 10, a sliding key 11 and a U-shaped placing frame 12, the sliding key 11 is fixedly installed at the top ends of the two sides of the U-shaped placing frame 12, the positioning bolt 10 is in threaded connection with the four corners of the top end of the U-shaped placing frame 12, the screw rod 9 is in sliding connection with the top end of the U-shaped placing frame 12, the limiting cross frame 8 is in sliding connection with the screw rod 9, the nut 7 is in threaded connection with the top end and the bottom end of the screw rod 9 in a sleeved mode, the distance can be adjusted on the top end of the U-shaped placing frame 12 through the screw rod 9, and external electrical equipment elements can be conveniently placed on the top end of the U-shaped placing frame 12.

As shown in fig. 4, the placement module 5 includes a locking device 13, a receiving device 14 and a heat sink 15, wherein the receiving device 14 is slidably mounted inside the locking device 13, and the heat sink 15 is fixedly mounted inside the rear end of the locking device 13, so as to facilitate the receiving device 14 to be integrally mounted inside the locking device 13.

As shown in fig. 5, the locking device 13 includes a front bezel 16, a positioning pin 17, a docking slot 18, a first return spring 19, a handle 20, a gear 21, a rack 22, an alignment insertion rod 23, a button switch 24, a second return spring 25, a support slide rod 26, a guide slot 27, a first placement slot frame 28 and a trigger rod 29, the docking slot 18 is fixedly installed on the front end of the front bezel 16, the gear 21 is rotatably installed in the center of the front bezel 16, the handle 20 is fixedly installed in the center of the front end of the gear 21, the first return spring 19 is fixedly installed at the bottom end of the handle 20, the positioning pin 17 is fixedly installed on the top end of the first return spring 19, the rack 22 is engaged with the top end and the bottom end of the gear 21, the alignment insertion rod 23 is fixedly installed on one end of the rack 22 far away from the gear 21, the first placement slot frame 28 is fixedly installed on the rear end of the front bezel 16, the button switch 24 is fixedly installed inside the front end of the first placement slot frame 28, the second return spring 25 is fixedly installed above the opening button 24, the second return spring 25 is installed on the top end of the guide slot frame 28, the guide slot frame 23 is capable of moving the positioning insertion rod 23 to the front bezel 23, and the trigger rod can be conveniently driven by the movement of the positioning insertion rod, and the guide slot frame, and the trigger rod, the trigger rod 23, and the trigger rod can be conveniently driven by the movement of the positioning insertion rod, and the positioning insertion rod, the positioning slot frame, and the positioning pin can be moved to the positioning slot frame, and the positioning pin can be conveniently.

As shown in fig. 6, the accommodating device 14 includes a clamping groove 30, a filter screen 31 and a second placing slot frame 32, the clamping groove 30 is opened on both sides of the inside of the second placing slot frame 32, and the filter screen 31 is slidably inserted into both ends of the second placing slot frame 32, so as to facilitate the installation and removal of the filter screen 31 in the inside of the second placing slot frame 32.

As shown in fig. 9, the support housing 2 includes a limit bar 42, insertion holes 43 and a housing 44, the limit bar 42 is fixedly installed at two ends of the interior of the housing 44 at equal intervals, the insertion holes 43 are opened at equal intervals inside the front end of the housing 44, and the trigger bar 29 can be limited from moving upwards or downwards by the limit bar 42.

The sliding key 11 is inserted in the clamping groove 30 in a sliding mode, the supporting sliding rod 26 is inserted in the insertion hole 43 in a sliding mode, the trigger rod 29 is vertically aligned with the limiting edge strip 42, the second placing groove frame 32 is installed in the first placing groove frame 28 in a sliding mode, the fan 33 is fixedly installed in the rear end of the first placing groove frame 28, the second conveying and cleaning scraper 39 is inserted in the guide groove 27 in a sliding mode, and dust and impurities on the surface of the filter screen 31 can be removed.

Round holes matched with the alignment insertion rods 23 are formed in the inside of the positioning buckle plate 4 and the two ends of the front baffle plate 16, a movable insertion hole matched with the screw rod 9 is formed in the center of the top end of the U-shaped placing frame 12, an insulating layer is fixedly installed at the bottom end of the inside of the U-shaped placing frame 12, the button switch 24 is electrically connected with the fan 33, a fixed point hole matched with the positioning pin 17 is formed in the butt joint groove 18, insertion holes matched with the filter screen 31 are formed in the bottoms of the two ends of the second placing groove frame 32, the side face, close to the fan 33, of the second cleaning scraper 39 is attached to the outer side face of the filter screen 31, the bottom of the front end of the limiting edge strip 42 is arranged in a 45-degree slope from high to low, vertical sliding keys are fixedly installed at the two ends of the second placing groove frame 32, alignment sliding chutes matched with the vertical sliding keys are formed in the two ends of the inside of the first placing groove frame 28, and the second placing groove frame 32 can be conveniently installed and detached inside the first placing groove frame 28.

The working principle of the embodiment 1 is as follows: when the electric appliance rack is used, the front baffle 16 is pulled outwards to drive the first placing groove frame 28 to move outwards, the first placing groove frame 28 can be ensured to move outwards along a straight line by sliding the supporting slide rod 26 in the insertion hole 43, at the moment, when the first placing groove frame 28 moves outwards to a limit position, the trigger rod 29 can be driven to move upwards quickly through the elasticity of the second reset spring 25, the bottom end of the trigger rod 29 can be separated from the contact with the button switch 24, so that the fan 33 can lose power, meanwhile, an external electric appliance element can be placed at the inner bottom end of the U-shaped placing frame 12, the limiting cross frames 8 are respectively slid to the top ends of the electric appliance element, the nuts 7 are respectively screwed to be fastened with the U-shaped placing frame 12, the limiting cross frames 8 can be fixed at a specified working position, and the phenomenon that the electric appliance element falls off can be prevented, at the moment, the sliding key 11 is inserted in the clamping groove 30 in a sliding manner, so that the distance of the U-shaped placing frame 12 in the second placing groove frame 32 can be conveniently adjusted, when the position of the U-shaped placing frame 12 is adjusted, the positioning bolt 10 can be screwed to penetrate through the U-shaped placing frame 12 and be fastened with the second placing groove frame 32, so that the U-shaped placing frame 12 can be fixedly installed on a designated working area, meanwhile, the front baffle 16 can be pushed to the inside of the shell 44 again to complete the resetting work of the positioning device 6, at the moment, when the first placing groove frame 28 moves towards the inside of the shell 44, the trigger rod 29 can be driven to pass through the bottom of the front end of the limiting edge strip 42, so that the trigger rod 29 can move downwards, the bottom end of the trigger rod 29 can be contacted with the button switch 24 again to start the fan 33, at the moment, when the fan 33 is started, the heat in the shell 44 and the first placing groove frame 28 can be discharged outwards, meanwhile, when the fan 33 is started, the worm 40 can be driven to rotate, the worm 40 can drive the worm wheel 41 and the rotating wheel 36 to rotate simultaneously, the rotating wheel 36 can drive the convex rod 35 to rotate and extrude the movable sliding plate 34 and the second conveying cleaning scraper 39 to move upwards or downwards when rotating, the second conveying cleaning scraper 39 is attached to the surface of the filter screen 31, impurities and dust adsorbed on the surface of the filter screen 31 can be cleaned, the efficiency of air passing through the filter screen 31 is improved, when the convex rod 35 passes through the bottom end of the movable sliding plate 34, the movable sliding plate 34 can be pressed to reset through the elasticity of the third reset spring 38, so that the convex rod 35 can conveniently extrude the movable sliding plate 34 to move again, the cleaning work of the surface of the filter screen 31 is completed, when the first placing groove frame 28 moves to the limit position towards the inside of the outer shell 44, the front baffle 16 can be driven to align with the circular hole inside the positioning buckle plate 4, at the moment, the positioning pin 17 can be pressed downwards, the handle 20 is rotated, the handle 20 can drive the gear 21 to rotate, the rack 22 can move towards two ends, when the handle 20 drives the positioning pin 17 to rotate to be aligned with the butt joint groove 18, the alignment insertion rod 23 can be driven to penetrate through the front baffle 16 and be inserted into a round hole in the positioning buckle plate 4, at the moment, the positioning pin 17 can be loosened, the positioning pin 17 can be driven to rapidly move outwards through the elasticity of the first reset spring 19, the positioning pin 17 can be driven to be inserted into the butt joint groove 18, the handle 20 can be prevented from rotating again, the first placing groove frame 28 can be limited and fixed in the shell 44, when the device is used, the filter screen 31 can slide in the two ends of the second placing groove frame 32, the filter screen 31 can be conveniently and rapidly installed and detached, the filter screen 31 can be conveniently replaced, and meanwhile, an insulating layer is fixedly installed at the bottom end in the U-shaped placing frame 12, the insulating property of the electrical element can be improved, and the phenomenon of electric leakage of the electrical element is prevented.

Example 2

On the basis of embodiment 1, as shown in fig. 10, the support housing 2 further includes heat dissipation grooves 45 and a raised base 46, the heat dissipation grooves 45 are equidistantly opened inside the front end of the raised base 46, and the raised base 46 is fixedly installed at the bottom end of the housing 44.

In the embodiment, the raised substrate 46 is fixedly mounted at the bottom end of the housing 44, so that the housing 44 can be raised as a whole, and moisture can be prevented from permeating into the bottom end of the housing 44, and meanwhile, the heat dissipation grooves 45 are equidistantly arranged inside the front end and the rear end of the raised substrate 46, so that the air permeability of the raised substrate 46 can be improved, a large amount of moisture can be prevented from being accumulated at the bottom end inside the raised substrate 46, and the service life of the housing 44 can be prolonged.

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

Claims (10)

1. The utility model provides an explosion-proof type drawer type low-voltage switchgear, includes positioning mechanism support housing (2) and heat abstractor (15), the inside equidistance slidable mounting of support housing (2) has extraction mechanism (1), equidistance fixed mounting has location buckle (4) on the front end both sides of support housing (2), the inside fixed mounting in both ends of support housing (2) has check to keep off frame (3), its characterized in that: the heat dissipation device (15) comprises a fan (33), a movable sliding plate (34), a convex rod (35), a rotating wheel (36), a protective cover plate (37), a third return spring (38), a second conveying cleaning scraper blade (39), a worm (40) and a worm wheel (41), wherein the worm (40) is symmetrically and fixedly installed at the rear end of the fan (33), the worm wheel (41) is meshed at the top end of the worm (40), the protective cover plate (37) is fixedly installed at two ends of the fan (33), the worm wheel (41) penetrates through the inner center of the protective cover plate (37) and is fixedly installed at the rotating wheel (36), the convex rod (35) is fixedly installed at the top end of the rotating wheel (36), the movable sliding plate (34) is inserted into the inner top end and the bottom end of the protective cover plate (37), the third return spring (38) is fixedly installed at the bottom end and the top end of the movable sliding plate (34), and the second conveying cleaning scraper blade (39) is fixedly installed at the front end of the movable sliding plate (34).

2. The explosion-proof drawer type low-voltage switch cabinet according to claim 1, wherein: the extracting mechanism (1) comprises a placing component (5) and a positioning device (6), wherein the positioning device (6) is arranged in the placing component (5) in an equidistant sliding mode.

3. An explosion-proof drawer type low-voltage switch cabinet according to claim 2, characterized in that: positioner (6) include nut (7), spacing crossbearer (8), screw rod (9), positioning bolt (10), feather key (11) and U type rack (12), feather key (11) fixed mounting is on the both sides top of U type rack (12), positioning bolt (10) screw thread is pegged graft in the top four corners of U type rack (12), screw rod (9) slide and peg graft inside the top of U type rack (12), spacing crossbearer (8) slidable mounting is on screw rod (9), just nut (7) screw thread cup joints on the top and the bottom of screw rod (9).

4. An explosion-proof drawer type low-voltage switch cabinet according to claim 3, characterized in that: the placing assembly (5) comprises a locking device (13), a containing device (14) and a heat radiating device (15), wherein the containing device (14) is installed inside the locking device (13) in a sliding mode, and the heat radiating device (15) is fixedly installed inside the rear end of the locking device (13).

5. The explosion-proof drawer type low-voltage switch cabinet according to claim 4, wherein: the locking device (13) comprises a front baffle plate (16), a positioning pin (17), a butt joint groove (18), a first reset spring (19), a handle (20), a gear (21), a rack (22), a butt joint insert rod (23), a button switch (24), a second reset spring (25), a support slide rod (26), a guide groove (27), a first placing groove frame (28) and a trigger rod (29), wherein the butt joint groove (18) is fixedly installed at the front end of the front baffle plate (16), the gear (21) is rotatably installed at the inner center of the front baffle plate (16), the handle (20) is fixedly installed at the center of the front end of the gear (21), the first reset spring (19) is fixedly installed at the inner bottom end of the handle (20), the positioning pin (17) is fixedly installed at the top end of the first reset spring (19), the rack (22) is meshed at the top end and the bottom end of the gear (21), the butt joint insert rod (23) is fixedly installed at one end, far away from the gear (21), the first placing groove frame (28) is fixedly installed at the front end of the front baffle plate (16), and the first reset spring (28) is installed at the rear end of the first reset spring (24), and second reset spring (25) are located button switch (24) top, trigger bar (29) fixed mounting is on the top of second reset spring (25), guide way (27) are seted up at the inside both ends of first placing tank bracket (28), support slide bar (26) fixed mounting is in the rear end four corners of preceding baffle (16).

6. The explosion-proof drawer type low-voltage switch cabinet according to claim 5, wherein: accommodate device (14) place truss (32) including draw-in groove (30), filter screen (31) and second, draw-in groove (30) are seted up and are placed on truss (32) inside both sides in the second, filter screen (31) slide and peg graft inside the both ends that truss (32) were placed to the second.

7. The explosion-proof drawer type low-voltage switch cabinet according to claim 6, wherein: support shell (2) including spacing strake (42), jack (43) and shell (44), spacing strake (42) equidistance fixed mounting is at the inside both ends of shell (44), jack (43) equidistance is seted up inside the front end of shell (44).

8. The explosion-proof drawer type low-voltage switch cabinet according to claim 7, wherein: the sliding key (11) is inserted in the clamping groove (30) in a sliding mode, the supporting sliding rod (26) is inserted in the insertion hole (43) in a sliding mode, the trigger rod (29) is vertically aligned with the limiting edge strip (42), the second placing groove frame (32) is installed in the first placing groove frame (28) in a sliding mode, the fan (33) is fixedly installed in the rear end of the first placing groove frame (28), and the second conveying and cleaning scraper blade (39) is inserted in the guide groove (27) in a sliding mode.

9. The explosion-proof drawer type low-voltage switch cabinet according to claim 8, wherein: the inside round hole with counterpoint inserted bar (23) looks adaptation is all seted up with the both ends inside of preceding baffle (16) to the inside of location buckle (4), the top center of U type rack (12) is seted up with the movable jack of screw rod (9) looks adaptation, the inside bottom fixed mounting of U type rack (12) has the insulating layer, button switch (24) exist electric connection with fan (33), the fixed point hole with locating pin (17) looks adaptation is seted up to the inside of butt joint groove (18), the both ends bottom of second place tank tower (32) is seted up with the ann jack of filter screen (31) looks adaptation, the second passes cleans scraper blade (39) and is close to the lateral surface laminating of fan (33) and filter screen (31), the front end bottom of spacing strake (42) is 45 slopes setting from high to low, fixed mounting has vertical feather key on the both ends of second place tank tower (32), just first place the inside both ends of tank tower (28) and set up the spout of counterpointing with vertical feather key looks adaptation.

10. An explosion-proof drawer type low-voltage switch cabinet according to claim 9, characterized in that: support housing (2) still include radiating groove (45) and raise base plate (46), inside the front end of raising base plate (46) was seted up to radiating groove (45) equidistance, just raise base plate (46) fixed mounting in the bottom of shell (44).

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