CN114759460A

CN114759460A - Distribution box cover plate

Info

Publication number: CN114759460A
Application number: CN202210673442.7A
Authority: CN
Inventors: 武际花; 陈伟; 鞠永胜; 苏静
Original assignee: Shandong Vocational College of Science and Technology
Current assignee: Shandong Vocational College of Science and Technology
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-07-15
Anticipated expiration: 2042-06-15
Also published as: CN114759460B

Abstract

The invention is suitable for the technical field of distribution box equipment, and provides a distribution box cover plate, which comprises: the cover plate comprises a cover plate main body, a plurality of first unit plates, a plurality of second unit plates and a plurality of third unit plates; the cover plate main body is provided with an avoidance space, and the avoidance space can be plugged by the first unit plate, the second unit plate and the third unit plate; the front surface of the first unit plate is fixedly connected with two control air cylinders which are arranged up and down, and the control air cylinders are communicated with the corresponding execution air cylinders; the second unit plate is provided with a plurality of bosses, the bosses are provided with through holes, and two second sealing blocks are connected in the through holes in a sealing and sliding manner. Therefore, the invention seals the original box body by covering the cover plate main body on the outer side of the original box body, and realizes the function of operating the electric switch in an air-isolated way by the mutual matching of the three unit plates, thereby avoiding the direct contact of dust and the electric switch and improving the dustproof and explosion-proof grade.

Description

Distribution box cover plate

Technical Field

The invention relates to the technical field of distribution boxes, in particular to a distribution box cover plate.

Background

In the development process of small and medium-sized enterprises, the factory building is a necessary production foundation, and because the scale of the enterprises is small, the factory building cannot be independently built, and the enterprises often adopt a renting mode for production. The existing factory buildings only need basic hardware facilities due to the consideration of construction cost, and the basic service conditions are met. For some flammable and explosive enterprises, due to the nature of the product, the enterprises can only build plants with the fire-proof grade A or B to produce the flammable and explosive enterprises. However, for some dust-related enterprises, such as woodware processing factories, the fire-resistant level of the factory building can meet the production requirement only by class C, so the woodware processing factories can choose to lease the existing factory building for production. However, basic hardware facilities of the existing factory buildings often cannot meet the requirements of safe production, and particularly, electrical appliances need to be modified into electrical appliances meeting the explosion-proof and dust-proof standards. The corresponding explosion-proof switch board or electrical apparatus of can purchase on market to obviously adorn electrical apparatus and switch board and solve explosion-proof dustproof problem, nevertheless to the block terminal of dark dress in the wall inside, because circuit and box have all been fixed hide in the wall, often can't change, the switch in the block terminal often controls illumination or socket, and power is less itself. If the anti-explosion distribution box is replaced, the wall needs to be broken and disassembled, so that the anti-explosion distribution box is large in size and very complex in construction; meanwhile, the purchase of the explosion-proof distribution box is very expensive. Combine market quotation, an explosion-proof block terminal market price that has a master switch and four branch switches is between three thousand yuan to four thousand yuan, and the lighting switch in the wall block terminal often reaches tens of items in the large-scale factory building, if change, the purchase cost of an explosion-proof block terminal has surpassed ten thousand yuan, and to middle and small enterprises, the cost is very high. However, the distribution box installed in the wall body cannot meet the requirement of dust-proof sealing, and dust explosion is easily caused by static electricity and sparks generated in the process of opening and closing.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

Disclosure of Invention

In view of the above-mentioned drawbacks, an object of the present invention is to provide a cover plate for a distribution box, which is configured to cover a cover of the distribution box outside an original distribution box in a sealing manner, and control an open/close state of an original switch by a vertically movable push rod, so as to isolate the switch from dust, and ensure normal use of the switch, and the cover plate has a small size, easy processing, low processing cost, and convenient use, and has a high cost performance compared with an explosion-proof distribution box on the market.

In order to achieve the above object, the present invention provides a cover plate for a distribution box, comprising: the cover plate comprises a cover plate main body, a plurality of first unit plates, a plurality of second unit plates and a plurality of third unit plates; the cover plate main body is provided with an avoidance space, and the avoidance space can be plugged by the first unit plate, the second unit plate and the third unit plate;

the length and width dimensions of the first unit plate, the second unit plate and the third unit plate are the same;

the front side of the first unit plate is fixedly connected with two control air cylinders which are arranged up and down, the back side of the first unit plate is provided with two execution air cylinders corresponding to the two control air cylinders, and the control air cylinders are communicated with the corresponding execution air cylinders; a first sealing block is connected in the control air cylinder in a sliding manner, and a spring is arranged between the first sealing block and the control air cylinder; a push rod is connected in the execution air cylinder in a sliding manner, and one side of the push rod extends out of the execution air cylinder;

the second unit plate is provided with a plurality of bosses, the bosses are provided with through holes, two second sealing blocks are connected in the through holes in a sealing and sliding manner, and one of the second sealing blocks is elastically connected with the second unit plate; the second sealing block is provided with a stepped structure and can extend out of the second unit plate.

According to the distribution box cover plate, the first unit plate, the second unit plate and the third unit plate are all made of anti-static flame-retardant acrylic plates.

According to the distribution box cover plate, the two sides of the first unit plate, the two sides of the second unit plate and the two sides of the third unit plate are respectively provided with the positioning strips and the clamping grooves, and the positioning strips and the clamping grooves are arranged in a matched mode.

According to the distribution box cover plate, the front face of the first unit plate is provided with the sliding rod, the sliding rod is connected with the first unit plate in a sliding mode and located between the two control air cylinders, and the sliding rod is used for pushing the first sealing block.

According to the distribution box cover plate, the sliding rod is provided with the positioning hole, the positioning hole is elastically connected with the convex column in a sliding mode, and the first unit plate is provided with the positioning column corresponding to the positioning hole.

According to the distribution box cover plate, the diameter of the tail end of the convex column is larger than that of the positioning column.

According to the distribution box cover plate, the second sealing block is provided with the mounting hole, the mounting hole is in interference connection with the supporting block, and the supporting block and the mounting hole are eccentrically arranged.

According to the distribution box cover plate, the supporting block is of a rod-shaped structure.

The invention comprises the following steps: the cover plate comprises a cover plate main body, a plurality of first unit plates, a plurality of second unit plates and a plurality of third unit plates; the cover plate main body is provided with an avoidance space, and the avoidance space can be plugged by the first unit plate, the second unit plate and the third unit plate; the length and width dimensions of the first unit plate, the second unit plate and the third unit plate are the same; the front side of the first unit plate is fixedly connected with two control air cylinders which are arranged up and down, the back side of the first unit plate is provided with two execution air cylinders corresponding to the two control air cylinders, and the control air cylinders are communicated with the corresponding execution air cylinders; a first sealing block is connected in the control air cylinder in a sliding manner, and a spring is arranged between the first sealing block and the control air cylinder; a push rod is connected in the execution air cylinder in a sliding manner, and one side of the push rod extends out of the execution air cylinder; the second unit plate is provided with a plurality of bosses, the bosses are provided with through holes, two second sealing blocks are connected in the through holes in a sealing and sliding manner, and one of the second sealing blocks is elastically connected with the second unit plate; the second sealing block is provided with a stepped structure and can extend out of the second unit plate; according to the invention, the cover plate main body is covered on the outer side of the original box body, the original box body is sealed, meanwhile, through the mutual matching of the three unit plates, the opening and closing of the original electric switch can be realized through external operation, the function of operating the electric switch in an air-isolated mode is realized, the direct contact between dust and the electric switch is avoided, the dustproof and explosion-proof grade is improved, meanwhile, the production difficulty of the three unit plates is reduced by adopting a splicing mode, the processing cost is low, and the use is convenient.

Drawings

FIG. 1 is a schematic view of the mounting structure of the present invention; fig. 2 is a schematic structural view of a prior art electric box; FIG. 3 is a schematic structural view of a first unit plate according to the present invention; FIG. 4 is a schematic cross-sectional view of a first unit plate according to the present invention; FIG. 5 is a schematic structural view of a second unit plate according to the present invention; FIG. 6 is a schematic cross-sectional view of a second unit plate according to the present invention; FIG. 7 is a schematic view showing the structure of a third unit plate according to the present invention; FIG. 8 is a schematic cross-sectional view of a third unit plate according to the present invention; FIG. 9 is a schematic view of an assembled structure of a first unit plate, a second unit plate and a third unit plate according to the present invention; fig. 10 is a schematic cross-sectional view of the electrical distribution box of the present invention; FIG. 11 is a schematic view of the first operating state of detail A in FIG. 10; FIG. 12 is a schematic view of the second operating state of detail A in FIG. 10; FIG. 13 is a schematic view of the third operating state of detail A in FIG. 10; FIG. 14 is a schematic view of the first operating state of detail B in FIG. 4; FIG. 15 is a schematic view of the second operating state of detail B in FIG. 4; FIG. 16 is a schematic view of the first operating state of detail C of FIG. 6; in the figure, 1-a first unit plate, 11-a control air cylinder, 12-an actuating air cylinder, 13-a sliding rod, 131-a convex column, 132-a positioning column, 14-a push rod, 15-a first sealing block, 2-a second unit plate, 21-a boss, 22-a second sealing block, 23-a supporting block, 3-a third unit plate, 31-a positioning strip, 32-a clamping groove, 4-a cover plate main body, 41-an avoidance space, 100-a wall, 200-a distribution box, 300-a turnover plate and 400-an electrical appliance switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2, the present invention provides a cover plate for a distribution box. This distribution box apron includes: the cover plate comprises a cover plate main body 4, a plurality of first unit plates 1, a plurality of second unit plates 2 and a plurality of third unit plates 3, wherein the cover plate main body 4 is connected to the outer side of a box door of the distribution box 200 in a covering mode, the cover plate main body 4 is fixed on the wall 100 through expansion bolts, a sealing ring is arranged between the cover plate main body 4 and the wall 100, and meanwhile sealant is smeared on the periphery of the cover plate main body 4 to perform sealing treatment.

The middle part of apron main part 4 is opened there is dodge space 41, dodges the outside that space 41 is located the board 300 that turns over on former distribution box 200, when installation apron main part 4, will turn over the board 300 and demolish, expose a plurality of electrical apparatus switches 400 of the inside, electrical apparatus switches 400 contain: air switches and earth leakage protectors. A plurality of first unit plates 1, second unit plates 2 and third unit plates 3 are fixedly connected to the avoidance space 41, the first unit plates 1, the second unit plates 2 and the third unit plates 3 are combined and matched according to the arrangement positions of the air switches and the leakage protectors, the avoidance space 41 is blocked, and the sealing performance of the cover plate main body 4 is guaranteed.

The length dimensions of first cell board 1, second cell board 2 and third cell board 3 are all the same, and the width dimensions of first cell board 1, second cell board 2 and third cell board 3 are also the same, make things convenient for the blanking processing of three kinds of cell boards, improve the utilization ratio of three kinds of cell boards.

Referring to fig. 3 and 4, the front side of the first unit board 1 is fixedly connected with two control cylinders 11 which are arranged up and down, the back side of the first unit board 1 is fixedly connected with two actuating cylinders 12, the two actuating cylinders 12 are arranged corresponding to the two control cylinders 11, and each actuating cylinder 12 is communicated with the corresponding control cylinder 11. The inside sliding connection of control inflator 11 has first sealed piece 15, is equipped with the spring between first sealed piece 15 and the control inflator 11, and the both ends of spring are fixed connection control inflator 11 and first sealed piece 15 respectively, and first sealed piece 15 is sealed with the control inflator 11, and when first sealed piece 15 moved to the inside of control inflator 11, can compress the gas in the control inflator 11. A push rod 14 is connected in the actuating cylinder 12 in a sliding mode, one end of the push rod 14 is connected with the actuating cylinder 12 in a sealing and sliding mode, and the other end of the push rod 14 extends out of the actuating cylinder 12. Referring to fig. 10 to 13, when the first sealing block 15 compresses the air in the control cylinder 11, the air enters the actuating cylinder 12 to push the push rod 14 outward, and after the push rod 14 is pushed out, the wrench of the corresponding electrical switch 400 is pushed to open and close the electrical switch 400. When the electrical switch 400 is opened and closed, the first sealing block 15 is released, the first sealing block 15 is reset under the action of the spring, negative pressure is generated in the control air cylinder 11, the push rod 14 is attracted by suction force, slides into the execution air cylinder 12 and resets, and the push rod 14 plays a role of blocking when the electrical switch 400 is prevented from tripping.

Referring to fig. 5 and 6, the second unit plate 2 is provided with a plurality of bosses 21 having through holes, and the bosses 21 are disposed corresponding to the test buttons on the electrical switch 400. Sliding connection has two second sealed pieces 22 in the through-hole, be equipped with stair structure on the second sealed piece 22, second sealed piece 22 elastic connection second cell board 2, certain distance in interval between two second sealed pieces 22, when pressing a second sealed piece 22, another second sealed piece 22 carries out the syntropy and removes, and stretch out second cell board 2, when loosening the second sealed piece 22 that is pressed, another second sealed piece 22 resets under the effect of spring, the second sealed piece 22 that will be pressed simultaneously resets, second sealed piece 22 can press the test button on the earth-leakage protector, can carry out earth-leakage protector's experimental action through operation second sealed piece 22.

Furthermore, the three unit plates are all made of flame-retardant acrylic plates, and the acrylic plates are high in strength, good in light transmittance, high in surface hardness, wear-resistant and scratch-resistant. Meanwhile, the adhesive mode is adopted during installation, so that the installation is convenient, the fixation is firm, and the sealing performance is better.

Furthermore, the acrylic plate is preferably a transparent anti-static acrylic plate, so that the real-time state of the electrical switch 400 can be observed conveniently, the generation of static electricity can be reduced, and the safety is higher.

Referring to fig. 7, the third unit panel 3 is used to seal off a place where the electric appliance is not installed. The third unit plates 3 have the same outer dimensions as the second unit plates 2 and the first unit plates 1, and when machining, a plurality of third unit plates 3 can be machined firstly, and then the plurality of third unit plates 3 are machined into the second unit plates 2 or the first unit plates 1 according to the requirements.

Referring to fig. 8 and 9, further, one side of each of the three unit boards is provided with a positioning strip 31, the other side of each of the three unit boards is provided with a clamping groove 32, the positioning strips 31 are in adaptive fit with the clamping grooves 32, the positioning strips 31 can be slidably clamped into the clamping grooves 32 to clamp the two adjacent unit boards, the positioning strips 31 and the clamping grooves 32 are connected in a sealing manner, and dust is prevented from entering the electric switch 400.

Referring to fig. 4, further, a sliding rod 13 is arranged on the front surface of the first unit plate 1, the sliding rod 13 is slidably connected to the first unit plate 1, the sliding rod 13 is located between the two control cylinders 11, and the sliding rod 13 slides up and down to drive the first sealing block 15 above or below to move, so that the movement of the upper push rod 14 and the lower push rod 14 is realized.

Referring to fig. 3, 14 and 15, further, a positioning hole is formed on the sliding rod 13, a positioning column 132 is elastically connected to the first unit board 1, and the positioning column 132 is inserted into the positioning hole to position the sliding rod 13, so as to prevent misoperation and open and close the electrical switch 400. The sliding rod 13 is provided with a convex column 131 corresponding to the positioning column 132, the convex column 131 is elastically connected with a positioning hole on the sliding rod 13, the diameter of the tail end of the convex column 131 is larger than that of the positioning column 132, when the convex column 131 is pressed into the sliding rod 13, the positioning column 132 can be pressed into the first unit plate 1 to release the sliding rod 13, and then the sliding rod 13 is operated to move up and down.

Referring to fig. 5 and 16, in a further step, the second sealing block 22 is provided with a mounting hole, the supporting block 23 is provided with a protrusion corresponding to the mounting hole, the protrusion is in interference fit with the mounting hole, and the protrusion is eccentrically arranged on the supporting block 23 and can rotate a certain angle when being mounted, so that the supporting block 23 corresponds to a test button or a reset button on the leakage circuit protector.

Furthermore, the supporting block 23 is a rod-shaped structure, which can increase the rotation coverage of the supporting block 23, and is suitable for various leakage protectors of different manufacturers.

When the distribution box 200 in the wall 100 is modified, the turning plate 300 is firstly removed, the electric switch 400 is exposed, the cover plate main body 4 is covered on the outer side of the distribution box 200, the avoiding space 41 is opposite to the installation position of the electric switch 400, a sealing gasket is arranged between the cover plate main body 4 and the wall 100, the cover plate main body 4 is fixed on the wall 100 through expansion screws, and the periphery of the cover plate main body 4 is coated with a sealing adhesive. According to the model of the electric switch 400, the corresponding unit board is selected for installation. The air switch and the circuit breaker are national standards, the air switch is divided according to the number of poles and generally divided into models of 1P, 2P, 3P and the like, the width standard of 1P is 18 mm, the width of 2P is 36 mm, the width of 3P is 54 mm, the width sizes of the circuit breaker and the air switch are the same, and the width sizes of the circuit breaker and the air switch are increased by multiples of 18 mm. Therefore, the widths of the three unit plates are all 18 mm. The first unit board 1 corresponds to an air switch, the second unit board 2 corresponds to a circuit breaker, and the third unit board 3 is used for plugging other exposed positions.

The main switch in the distribution box 200 is generally a three-level leakage protection switch, and can adopt a form of combining three first unit plates 1 and three second unit plates 2, and the convex columns 131 on the three first unit plates 1 are sleeved on a shaft, so that synchronous movement of three push rods 14 is realized. The supporting block 23 on the second unit plate 2 selects the mounting hole according to the actual position so that the supporting block 23 is aligned with the test button and the reset button. Other switches in the switchbox 200 select the corresponding cell plates for assembly according to the corresponding categories. When all the corresponding installation is finished, the two sides of the avoidance space 41 have unclosed spaces, and the third cell plate 3 is used for plugging. After the shutoff is accomplished, adopt the rubber coated mode, seal between each cell board and between the apron main part 4, prevent that the dust in the factory building from getting into in the block terminal 200, prevent simultaneously that electrical switch 400 from opening and shutting the static and the electric spark that the in-process produced and the dust contact in the factory building, improved the security, make block terminal 200 reach the dustproof grade of production needs.

Referring to fig. 3, 4, 10 to 15, when the electrical switch 400 needs to be operated, the convex post 131 is pressed into the sliding rod 13, the convex post 131 pushes the positioning post 132 away from the sliding rod 13, the sliding rod 13 is released, the sliding rod 13 is pushed, the first sealing block 15 compresses air in the control cylinder 11, air enters the execution cylinder 12, the push rod 14 is pushed outwards, and after the push rod 14 is pushed out, the corresponding wrench of the electrical switch 400 is pushed, so that the electrical switch 400 is opened and closed. When the electrical switch 400 is opened and closed, the sliding rod 13 is loosened, the first sealing block 15 is released, the first sealing block 15 is reset under the action of the spring, negative pressure exists in the control air cylinder 11, the push rod 14 is attracted by suction force and slides into the execution air cylinder 12 to reset, when the electrical switch 400 is prevented from tripping, the push rod 14 plays a role of blocking, the sliding rod 13 is reset under the thrust action of the first sealing block 15, and the positioning column 132 is clamped in the sliding rod 13 again to prevent misoperation.

At the periodic inspection leak source protector, when needing to press the test button, press corresponding second sealed piece 22, another second sealed piece 22 carries out the syntropy and removes to stretch out second cell board 2, press the test button on the earth-leakage protector, when unclamping the second sealed piece 22 who is pressed, another second sealed piece 22 resets under the effect of spring, the second sealed piece 22 that will be pressed simultaneously resets, can carry out earth-leakage protector's experimental action through operation second sealed piece 22.

In summary, the present invention includes: the cover plate comprises a cover plate main body, a plurality of first unit plates, a plurality of second unit plates and a plurality of third unit plates; the cover plate main body is provided with an avoidance space, and the avoidance space can be plugged by the first unit plate, the second unit plate and the third unit plate; the length and width dimensions of the first unit plate, the second unit plate and the third unit plate are the same; the front side of the first unit plate is fixedly connected with two control air cylinders which are arranged up and down, the back side of the first unit plate is provided with two execution air cylinders corresponding to the two control air cylinders, and the control air cylinders are communicated with the corresponding execution air cylinders; a first sealing block is connected in the control air cylinder in a sliding manner, and a spring is arranged between the first sealing block and the control air cylinder; a push rod is connected in the execution air cylinder in a sliding manner, and one side of the push rod extends out of the execution air cylinder; the second unit plate is provided with a plurality of bosses, the bosses are provided with through holes, two second sealing blocks are connected in the through holes in a sealing and sliding manner, and one of the second sealing blocks is elastically connected with the second unit plate; the second sealing block is provided with a stepped structure and can extend out of the second unit plate; according to the invention, the cover plate main body is covered on the outer side of the original box body, the original box body is sealed, meanwhile, through the mutual matching of the three unit plates, the opening and closing of the original electric switch can be realized through external operation, the function of operating the electric switch in an air-isolated mode is realized, the direct contact between dust and the electric switch is avoided, the dustproof and explosion-proof grade is improved, meanwhile, the production difficulty of the three unit plates is reduced by adopting a splicing mode, the processing cost is low, and the use is convenient.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A power distribution box cover panel, comprising: the cover plate comprises a cover plate main body, a plurality of first unit plates, a plurality of second unit plates and a plurality of third unit plates; the cover plate main body is provided with an avoidance space, and the avoidance space can be plugged by the first unit plate, the second unit plate and the third unit plate;

the second unit plate is provided with a plurality of bosses, the bosses are provided with through holes, two second sealing blocks are connected in the through holes in a sealing and sliding manner, and one of the second sealing blocks is elastically connected with the second unit plate; the second sealing block is provided with a step structure and can extend out of the second unit plate.

2. The electrical box cover plate according to claim 1, wherein the first unit plate, the second unit plate and the third unit plate are made of antistatic flame retardant acrylic plates.

3. The electrical box cover plate according to claim 1, wherein two sides of the first unit plate, the second unit plate and the third unit plate are respectively provided with a positioning bar and a clamping groove, and the positioning bar is adapted to the clamping groove.

4. The electrical box cover plate according to claim 1, wherein the front surface of the first unit plate is provided with a sliding rod, the sliding rod is slidably connected with the first unit plate and is located between the two control cylinders, and the sliding rod is used for pushing the first sealing block.

5. The cover plate of the distribution box of claim 4, wherein the slide rod is provided with a positioning hole, a convex column is elastically and slidably connected in the positioning hole, and the first unit plate is provided with a positioning column corresponding to the positioning hole.

6. The electrical box cover of claim 5, wherein a diameter of a distal end of the post is greater than a diameter of the locating post.

7. The electrical box cover plate according to any one of claims 1 to 6, wherein the second sealing block is provided with a mounting hole, the mounting hole is connected with a supporting block in an interference manner, and the supporting block is eccentrically arranged with the mounting hole.

8. The electrical box cover panel of claim 7, wherein the support blocks are rod-like structures.