CN114389164B - Integrated node ring main unit for park emergency power distribution facility - Google Patents

Abstract

The invention relates to the technical field of ring main units, in particular to an integrated node ring main unit for a park emergency power distribution facility, which comprises a main body mechanism, wherein a shielding mechanism is fixedly arranged on the main body mechanism; the main body mechanism is matched with and slides with an extrusion mechanism; a limiting mechanism is fixed on the extrusion mechanism; the main body mechanism is connected with a placing mechanism; the shielding mechanism is arranged, so that operators can conveniently overhaul internal elements of the ring main unit in the weather of wind and rain, the internal elements can be prevented from being affected with damp, the extrusion mechanism is kicked by feet, and the main mechanism can be conveniently limited when the extrusion mechanism drives the limiting mechanism to slide, so that the condition that a door of the ring main unit is blown to randomly shake in the weather of strong wind in the overhaul process can be prevented; when an operator monitors the ring main unit by using a computer, the placing mechanism can be rotated by hands to be unfolded on the main body mechanism, so that the computer can be conveniently placed, and the working efficiency of the operator can be improved.

Description

Integrated node ring main unit for park emergency power distribution facility

Technical Field

The invention relates to the technical field of ring main units, in particular to an integrated node ring main unit for a park emergency power distribution facility.

Background

A ring main unit is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts a load switch and a fuse. The transformer substation is widely applied to distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.

However, when the existing ring main unit in the park is installed and used, an operator needs to monitor the ring main unit through a computer, and because the working space is limited, the computer of the operator generally does not have a fixed platform for placing, so that the operation is inconvenient and stable, and the monitoring effect of the ring main unit is easily influenced; in addition, the cabinet door needs to be opened during maintenance, the maintenance difficulty is higher under the weather conditions, the cabinet door is easily blown by wind, noise can be generated when the cabinet door is easily closed, and the maintenance efficiency of operators is not improved.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an integrated node ring main unit for a park emergency power distribution facility.

The technical scheme adopted by the invention for solving the technical problems is as follows: an integrated node ring main unit for a park emergency power distribution facility comprises a main body mechanism, wherein a shielding mechanism is fixedly arranged on the main body mechanism; the main body mechanism is matched with and slides with an extrusion mechanism; a limiting mechanism is fixed on the extrusion mechanism; the main body mechanism is connected with a placing mechanism;

the main body mechanism comprises a cabinet door, the placing mechanism comprises a connecting plate, the cabinet door is fixedly provided with the connecting plate, the connecting plate is symmetrically and rotatably connected with two base plates, the base plates are fixedly connected with supporting plates, rolling grooves are formed in the base plates, the connecting plate is connected with the base plates in a matched mode through guide shafts, sliding connection is formed between the base plates and the guide shafts, the connecting plate is in an isosceles trapezoid-shaped structure, and the section width of each guide shaft is larger than that of the connecting plate.

Specifically, the main body mechanism includes the cabinet body, rotate between cabinet door and the cabinet body and be connected, fixedly connected with radiator-grid on the cabinet door, just radiator-grid and cabinet body intercommunication, the symmetry is equipped with two dead slots on the cabinet body.

Specifically, shelter from the mechanism and include the fixed plate, fixed mounting has the fixed plate on the cabinet body, two fixed blocks of symmetrical fixedly connected with on the fixed plate, and two the fixed block passes through the stock cooperation and connects, fixed connection between stock and the fixed block, fixed mounting has the baffle on the stock, fixedly connected with a plurality of drain pipe on the fixed plate, just drain pipe and fixed plate intercommunication, be equipped with the aqua storage tank in the fixed plate, fixed mounting has the filter screen on the fixed plate, the aqua storage tank passes through filter screen and drain pipe intercommunication, a plurality of solar panel of fixedly connected with on the baffle.

Specifically, extrusion mechanism includes the slider, sliding connection has the slider on the cabinet body, fixedly connected with dead lever on the cabinet body, sliding connection between dead lever and the slider, just telescopic spring has been cup jointed on the dead lever, the slider passes through telescopic spring and is connected with cabinet body cooperation, the internal spout that is equipped with of cabinet, the spout fit in slides has the kickboard, just fixed connection between kickboard and the slider, the symmetry rotates there are two balls in the slider, just roll connection between ball and the cabinet body.

Specifically, stop gear includes to the pole, fixed mounting has to the pole on the slider, support the pole and be connected with the turning block cooperation, fixedly connected with loop bar on the turning block, fixedly connected with links the axle on the loop bar, link epaxial fixed mounting have the bull stick, just fixed connection between bull stick and the cabinet door, rotate between bull stick and the cabinet body and be connected, support to cooperate on the pole and rotate there is the gyro wheel, cup jointed the rubber pad on the gyro wheel, just the rubber pad is contradicted with the turning block.

The invention has the beneficial effects that:

(1) According to the integrated node ring main unit for the park emergency power distribution facility, the main body mechanism is provided with the shielding mechanism, so that an operator can conveniently overhaul internal elements of the ring main unit in rainy days, and the condition that the ring main unit is affected with damp due to accumulation of rainwater on the ring main unit is also prevented, namely: the ring main unit is characterized in that the inside of the ring main unit is overhauled in rainy days, because the fixed plate is arranged on the ring main unit, the fixed plate is fixedly connected with the fixed block, the long rod arranged on the fixed block is fixedly connected with the baffle plate which is arranged in an inclined manner, and the baffle plate is provided with the plurality of solar panels, when raining, rainwater falls to the ground or a water storage tank arranged in the fixed plate through the inclined baffle plate, so that maintenance personnel can be shielded conveniently, and meanwhile, the ring main unit is favorable for preventing rainwater from entering the ring main unit, so that the condition that potential safety hazards are easily generated when electrical components and rainwater are affected by damp due to the fact that the rainwater contacts with the ring main unit is also prevented; the aqua storage tank is the inclined plane setting, is fixed with the filter screen on the fixed plate, and the rainwater is discharged through the drain pipe after the filter screen filters, and then is favorable to preventing that the rainwater from piling up the condition that leads to inside to wet at looped netowrk cabinet top.

(2) According to the integrated node ring main unit for the park emergency power distribution facility, when the main mechanism is opened, an operator can kick the extrusion mechanism, so that the extrusion mechanism can conveniently limit the main mechanism when driving the limiting mechanism to slide, the condition that a door of the ring main unit is blown to shake randomly in the windy weather in the maintenance process is favorably prevented, and the maintenance efficiency of the operator is improved to a certain extent, namely: when an operator overhauls the ring main unit, the ring main unit can be firstly kicked by feet, a hollow groove is formed in the main unit body, the hollow groove is matched with the sliding block to slide, the kicking plate is fixedly connected with the sliding block, a fixed rod is installed on the main unit body, an expansion spring is sleeved on the fixed rod, when the kicking plate slides at the sliding groove, the sliding block can be driven to slide, the sliding block is extruded along the fixed rod when sliding, a supporting rod is fixedly installed on the sliding block, the supporting rod is matched with the rotating block to be in rolling connection with the rotating roller, the rotating block is fixedly connected with a sleeve rod, a connecting shaft is fixed on the sleeve rod, the connecting shaft is fixedly connected with a rotating rod, the rotating rod is fixedly connected with a cabinet door, when the sliding block drives the supporting rod to slide, the roller is separated from the rotating block when rotating, the cabinet door can be rotated when the rotating block does not receive a supporting force, the cabinet door is driven to rotate the rotating rod inside the main unit body, the connecting shaft drives the sleeve rod to rotate, the operating personnel can loosen the kicking plate after opening the cabinet door, and the sliding block can be used for preventing the rotating rod from rotating noise when the sliding block is newly driven by the sliding block, thereby being convenient for limiting and limiting.

(3) According to the integrated node ring main unit for the park emergency power distribution facility, when an operator needs to use a computer to monitor the ring main unit, the placing mechanism can be rotated by hand, and then the placing mechanism is unfolded on the main body mechanism, so that the computer can be placed conveniently, and the working efficiency of the operator can be improved, namely: when overhauing, operating personnel can rotate the backup pad with the hand, be fixed with two backing plates in the backup pad, rotate between backing plate and the connecting plate and be connected, be equipped with the roll groove on the backing plate, the connecting plate is fixed on the cabinet door, backing plate and connecting plate pass through the guiding axle cooperation and connect, can make it contradict with the cabinet body when operating personnel rotates the backup pad, then with pushing down the backup pad, and then make the backing plate slide along the guiding axle, and then make the guiding axle conflict the tip in roll groove, and then be convenient for carry out spacing messenger's tiling expansion to the backup pad, thereby it places the computer that is used for monitoring looped netowrk cabinet to be convenient for operating personnel in the backup pad, be favorable to improving operating personnel's maintenance efficiency to a certain extent.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a schematic overall structure diagram of an integrated node ring main unit for a campus emergency power distribution facility according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of the part A shown in FIG. 1;

FIG. 3 is an enlarged view of the structure of the portion B shown in FIG. 1;

FIG. 4 is a schematic view of a connection structure of the cabinet and the fixing plate according to the present invention;

FIG. 5 is a schematic view of the connection structure of the slide block and the support rod of the present invention;

FIG. 6 is an enlarged view of the structure of the portion C shown in FIG. 5;

FIG. 7 is a schematic view of the connection structure of the backing plate and the supporting plate according to the present invention;

fig. 8 is a schematic view of a connection structure of the connection plate and the guide shaft according to the present invention.

In the figure: 1. a main body mechanism; 101. a cabinet body; 102. a cabinet door; 103. a heat-dissipating web; 104. an empty groove; 2. a shielding mechanism; 201. a fixed block; 202. a baffle plate; 203. a solar panel; 204. a fixing plate; 205. a long rod; 206. a water storage tank; 207. filtering with a screen; 208. a drain pipe; 3. an extrusion mechanism; 301. a chute; 302. kicking plates; 303. a slider; 304. a ball bearing; 305. fixing the rod; 306. a tension spring; 4. a limiting mechanism; 401. a support rod; 402. rotating the block; 403. a loop bar; 404. a rotating rod; 405. a connecting shaft; 406. a rubber pad; 407. a roller; 5. a placement mechanism; 501. a connecting plate; 502. a base plate; 503. a rolling groove; 504. a guide shaft; 505. and a support plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 8, the integrated node ring main unit for a park emergency power distribution facility according to the present invention includes a main body mechanism 1, wherein a shielding mechanism 2 is fixedly installed on the main body mechanism 1; the main body mechanism 1 is matched with and slides with an extrusion mechanism 3; a limiting mechanism 4 is fixed on the extrusion mechanism 3; the main body mechanism 1 is connected with a placing mechanism 5;

main body mechanism 1 includes cabinet door 102, it includes connecting plate 501 to place mechanism 5, fixed mounting has connecting plate 501 on cabinet door 102, the symmetry rotates on connecting plate 501 and is connected with two backing plates 502, fixedly connected with backup pad 505 on the backing plate 502, be equipped with roll groove 503 on the backing plate 502, connecting plate 501 passes through guiding axle 504 and is connected with the cooperation of backing plate 502, just sliding connection between backing plate 502 and the guiding axle 504, connecting plate 501 is the setting of isosceles trapezoid shape structure, the cross-sectional width of guiding axle 504 is greater than connecting plate 501's cross-sectional width.

Specifically, main body mechanism 1 includes cabinet body 101, rotate between cabinet door 102 and the cabinet body 101 and be connected, fixedly connected with radiator-grid 103 on the cabinet door 102, just radiator-grid 103 and cabinet body 101 intercommunication, the symmetry is equipped with two dead slots 104 on the cabinet body 101, when operating personnel need use the computer to supervise the looped netowrk cabinet, can rotate placement mechanism 5 with the hand, and then make placement mechanism 5 expand on main body mechanism 1 to be convenient for put the computer, also be favorable to improving operating personnel's work efficiency, promptly: during the maintenance, operating personnel can rotate backup pad 505 with the hand, be fixed with two backing plates 502 on the backup pad 505, rotate between backing plate 502 and the connecting plate 501 and be connected, be equipped with roll groove 503 on the backing plate 502, connecting plate 501 is fixed on cabinet door 102, backing plate 502 and connecting plate 501 pass through guiding axle 504 cooperation and connect, can make it contradict with the cabinet body 101 when operating personnel rotates backup pad 505, then with pushing down backup pad 505, and then make backing plate 502 slide along guiding axle 504, and then make guiding axle 504 contradict the tip of roll groove 503, and then be convenient for carry out spacing messenger's tiling expansion to backup pad 505, thereby be convenient for operating personnel will be used for monitoring the computer of looped netowrk cabinet and place on backup pad 505, be favorable to improving operating personnel's maintenance efficiency to a certain extent.

Specifically, it includes fixed plate 204 to shelter from mechanism 2, fixed mounting has fixed plate 204 on the cabinet body 101, two fixed block 201 of symmetry fixedly connected with on the fixed plate 204, and two fixed block 201 passes through stock 205 cooperation and connects, fixed connection between stock 205 and the fixed block 201, fixed mounting has baffle 202 on the stock 205, fixedly connected with a plurality of drain pipe 208 on the fixed plate 204, just drain pipe 208 and fixed plate 204 intercommunication, be equipped with aqua storage tank 206 in the fixed plate 204, fixed mounting has filter screen 207 on the fixed plate 204, aqua storage tank 206 passes through filter screen 207 and drain pipe 208 intercommunication, fixedly connected with a plurality of solar panel 203 on the baffle 202 is provided with on the main body mechanism 1 and shelters from mechanism 2, and then the operating personnel of being convenient for under weather of wind and rain overhauls looped netowrk cabinet internal component, has also prevented simultaneously that the rainwater from piling up the condition that leads to the looped netowrk cabinet to wet, promptly: the interior of the ring main unit is overhauled in rainy days, because the fixing plate 204 is arranged on the cabinet body 101, the fixing block 201 is fixedly connected onto the fixing plate 204, the baffle plate 202 is fixedly connected onto the long rod 205 arranged on the fixing block 201, the baffle plate 202 is arranged in an inclined manner, and the baffle plate 202 is provided with the plurality of solar panels 203, when raining, rainwater falls onto the ground or into the water storage tank 206 arranged in the fixing plate 204 through the inclined baffle plate 202, so that the maintenance personnel can be shielded conveniently, and meanwhile, the condition that potential safety hazards are easily caused when electrical components are affected with rainwater due to contact and damp when rainwater enters the ring main unit is favorably prevented; the aqua storage tank 206 is the inclined plane setting, is fixed with filter screen 207 on the fixed plate 204, and the rainwater is discharged through drain pipe 208 after filter screen 207 filters, and then is favorable to preventing that the rainwater from piling up the condition that leads to inside to wet at the looped netowrk cabinet top.

Specifically, extrusion mechanism 3 includes slider 303, sliding connection has slider 303 on the cabinet body 101, fixedly connected with dead lever 305 on the cabinet body 101, sliding connection between dead lever 305 and the slider 303, just telescopic spring 306 has been cup jointed on the dead lever 305, slider 303 passes through telescopic spring 306 and is connected with the cooperation of the cabinet body 101, be equipped with spout 301 in the cabinet body 101, spout 301 fit in slides there is kickplate 302, just fixed connection between kickplate 302 and the slider 303, the symmetry rotates there are two balls 304 in the slider 303, just rolling connection between ball 304 and the cabinet body 101.

Specifically, the limiting mechanism 4 includes a supporting rod 401, the supporting rod 401 is fixedly mounted on the sliding block 303, the supporting rod 401 is connected with the rotating block 402 in a matched manner, the rotating block 402 is fixedly connected with a sleeve rod 403, the sleeve rod 403 is fixedly connected with a connecting shaft 405, the connecting shaft 405 is fixedly mounted with a rotating rod 404, the rotating rod 404 is fixedly connected with the cabinet door 102, the rotating rod 404 is rotatably connected with the cabinet body 101, the supporting rod 401 is rotatably connected with a roller 407 in a matched manner, the roller 407 is sleeved with a rubber pad 406, and the rubber pad 406 is abutted to the rotating block 402, when the main body mechanism 1 is opened, an operator can kick the extrusion mechanism 3 with feet, so that the extrusion mechanism 3 can conveniently limit the main body mechanism 1 when driving the limiting mechanism 4 to slide, and therefore, the situation that the door of the ring main unit is prevented from being blown to shake in the windy weather in the maintenance process is facilitated, and the maintenance efficiency of the operator is improved to a certain extent, namely: when an operator overhauls the ring main unit, the kick plate 302 can be kicked by feet firstly, the cabinet body 101 is provided with the empty slot 104, the empty slot 104 is matched with and slides to form the kick plate 302, the kick plate 302 is fixedly connected with the sliding block 303, the cabinet body 101 is provided with the fixed rod 305, the fixed rod 305 is sleeved with the telescopic spring 306, when the kick plate 302 slides at the sliding slot 301, the sliding block 303 can be driven to slide, so that the sliding block 303 extrudes the telescopic spring 306 along the fixed rod 305, the sliding block 303 is fixedly provided with the abutting rod 401, the abutting rod 401 is matched with and rotates between the roller 407 and the rotating block 402 on the abutting rod 401, the rotating block 402 is fixedly connected with the sleeve rod 403, the sleeve rod 403 is fixedly provided with the connecting shaft 405, the rotating rod 404 is fixedly connected with the connecting shaft 405, and the rotating rod 404 is fixedly connected with the cabinet door 102, when the sliding block 303 drives the abutting rod 401 to slide, the roller 407 is separated from the rotating block 402 when the rotating block, so that the rotating rod 102 can rotate when the rotating block 402 without abutting the contact force, so that the rotating rod 404 can drive the rotating rod 404 to rotate the sliding block 302, thereby facilitating the sliding block 302 to release the limiting spring 401, and facilitating the sliding block 302 when the sliding block 302 to release the rotating block 302, thereby facilitating the rotating block 102.

When the ring main unit is used, firstly, when an operator overhauls the ring main unit, the operator can kick the kick plate 302 with feet, the cabinet body 101 is provided with the empty slot 104, the empty slot 104 is matched with the slide plate 302 in a sliding manner, the kick plate 302 is fixedly connected with the sliding block 303, the cabinet body 101 is provided with the fixed rod 305, the fixed rod 305 is sleeved with the telescopic spring 306, when the kick plate 302 slides at the sliding slot 301, the slide block 303 can be driven to slide, so that the slide block 303 extrudes the telescopic spring 306 along the fixed rod 305 in a sliding manner, the sliding block 303 is fixedly provided with the abutting rod 401, the abutting rod 401 is matched with the roller 407 rotating to be in a rolling connection with the rotating block 402 on the abutting rod 401, the rotating block 402 is fixedly connected with the sleeve rod 403, the connecting shaft 405 is fixedly connected with the rotating rod 404 on the connecting shaft 405, the rotating rod 404 is fixedly connected with the cabinet door 102, when the sliding block 303 drives the abutting rod 401 to slide, the roller 407 is abutted to be separated from the rotating block 402 in a rotating manner, so that the rotating rod 102 can rotate when the rotating block 402 without contact force, so that the rotating rod 402, the rotating rod 102 can drive the cabinet door 102 to open the rotating rod 102, thereby facilitating the rotating rod 401, and facilitating the operator to release the rotating spring 401 to facilitate the rotating of the rotating block 302, thereby facilitating the rotating block 302, and facilitating the rotating block 302 to release the rotating block 302; during maintenance, an operator can rotate the supporting plate 505 by hand, two cushion plates 502 are fixed on the supporting plate 505, the cushion plates 502 are rotatably connected with the connecting plate 501, rolling grooves 503 are formed in the cushion plates 502, the connecting plate 501 is fixed on the cabinet door 102, the cushion plates 502 and the connecting plate 501 are connected in a matching manner through the guide shafts 504, when the operator rotates the supporting plate 505, the supporting plate can be abutted against the cabinet body 101, then the supporting plate 505 is pressed downwards, the cushion plates 502 slide along the guide shafts 504, the guide shafts 504 are abutted against the end parts of the rolling grooves 503, and the supporting plate 505 is convenient to limit and flatly spread, so that the operator can place a computer for monitoring the ring main unit on the supporting plate 505, and the maintenance efficiency of the operator can be improved to a certain extent; the interior of the ring main unit is overhauled in rainy days, because the fixing plate 204 is arranged on the cabinet body 101, the fixing block 201 is fixedly connected onto the fixing plate 204, the baffle plate 202 is fixedly connected onto the long rod 205 arranged on the fixing block 201, the baffle plate 202 is arranged in an inclined manner, and the baffle plate 202 is provided with the plurality of solar panels 203, when raining, rainwater falls onto the ground or into the water storage tank 206 arranged in the fixing plate 204 through the inclined baffle plate 202, so that the maintenance personnel can be shielded conveniently, and meanwhile, the condition that potential safety hazards are easily caused when electrical components are affected with rainwater due to contact and damp when rainwater enters the ring main unit is favorably prevented; the aqua storage tank 206 is the inclined plane setting, is fixed with filter screen 207 on the fixed plate 204, and the rainwater is discharged through drain pipe 208 after filter screen 207 filters, and then is favorable to preventing that the rainwater from piling up the condition that leads to inside to wet at the looped netowrk cabinet top.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (1)

1. An integrated node ring main unit for a park emergency power distribution facility is characterized by comprising a main body mechanism (1), wherein a shielding mechanism (2) is fixedly arranged on the main body mechanism (1); the main body mechanism (1) is matched with and slides with an extrusion mechanism (3); a limiting mechanism (4) is fixed on the extrusion mechanism (3); the main body mechanism (1) is connected with a placing mechanism (5);

the main body mechanism (1) comprises a cabinet door (102), the placing mechanism (5) comprises a connecting plate (501), the connecting plate (501) is fixedly installed on the cabinet door (102), two base plates (502) are symmetrically and rotatably connected to the connecting plate (501), a supporting plate (505) is fixedly connected to each base plate (502), a rolling groove (503) is formed in each base plate (502), the connecting plate (501) is connected with each base plate (502) in a matched mode through a guide shaft (504), and the base plates (502) are connected with the guide shafts (504) in a sliding mode;

the connecting plate (501) is arranged in an isosceles trapezoid-shaped structure, and the section width of the guide shaft (504) is larger than that of the connecting plate (501);

the main body mechanism (1) comprises a cabinet body (101), the cabinet door (102) is rotatably connected with the cabinet body (101), a heat dissipation net (103) is fixedly connected onto the cabinet door (102), the heat dissipation net (103) is communicated with the cabinet body (101), and two empty grooves (104) are symmetrically arranged on the cabinet body (101);

the shielding mechanism (2) comprises a fixing plate (204), the fixing plate (204) is fixedly installed on the cabinet body (101), two fixing blocks (201) are symmetrically and fixedly connected to the fixing plate (204), the two fixing blocks (201) are connected in a matched mode through a long rod (205), the long rod (205) is fixedly connected with the fixing blocks (201), a baffle plate (202) is fixedly installed on the long rod (205), a plurality of drain pipes (208) are fixedly connected to the fixing plate (204), and the drain pipes (208) are communicated with the fixing plate (204);

a water storage tank (206) is arranged in the fixing plate (204), a filter screen (207) is fixedly installed on the fixing plate (204), the water storage tank (206) is communicated with a drain pipe (208) through the filter screen (207), and a plurality of solar panels (203) are fixedly connected to the baffle plate (202);

the extrusion mechanism (3) comprises a sliding block (303), the cabinet body (101) is connected with the sliding block (303) in a sliding mode, a fixed rod (305) is fixedly connected to the cabinet body (101), the fixed rod (305) is connected with the sliding block (303) in a sliding mode, a telescopic spring (306) is sleeved on the fixed rod (305), the sliding block (303) is connected with the cabinet body (101) in a matched mode through the telescopic spring (306), a sliding groove (301) is formed in the cabinet body (101), a kickplate (302) is arranged in the sliding groove (301) in a matched and sliding mode, and the kickplate (302) is fixedly connected with the sliding block (303);

two balls (304) symmetrically rotate in the sliding block (303), and the balls (304) are in rolling connection with the cabinet body (101);

the limiting mechanism (4) comprises a supporting rod (401), the sliding block (303) is fixedly provided with the supporting rod (401), the supporting rod (401) is connected with a rotating block (402) in a matched mode, the rotating block (402) is fixedly connected with a sleeve rod (403), the sleeve rod (403) is fixedly connected with a connecting shaft (405), the connecting shaft (405) is fixedly provided with a rotating rod (404), the rotating rod (404) is fixedly connected with the cabinet door (102), and the rotating rod (404) is rotatably connected with the cabinet body (101);

the pushing rod (401) is matched with and rotates with a roller (407), the roller (407) is sleeved with a rubber pad (406), and the rubber pad (406) is abutted to the rotating block (402).

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