CN105449554B - 3 enclosed type terminal boxs - Google Patents

Abstract

The three-point locking terminal box of the present invention includes a box body with an opening and a box door with a door lock in the middle, a first lock hole is provided on the upper side of the box door, and a second lock hole is provided on the lower side of the box door. A one-button bayonet pin lock is respectively installed on the side wall of the box corresponding to the first lock hole and the second lock hole; The wind and sand cover, the surrounding edges of the wind and sand cover extend laterally outside the side wall of the box, the side wall of the wind and sand cover is provided with a light opening, the light opening is covered by a heat absorbing plate, the bottom of the wind and sand cover The wall is provided with an annular groove matching the edge of the box body, and the middle part surrounded by the annular groove is provided with a communication port connected with the interior of the box body and installed with a wind and sand filter. . The invention has the advantages of low cost, tight sealing, rainproof and sandproof.

Description

Three-point locking terminal box

technical field

The invention relates to the technical field of electrical equipment, in particular to a three-point locking type terminal box.

Background technique

In the prior art, the door of the outdoor terminal box of the substation uses a door handle to fix the door from the middle of the door. In this fixing method, due to poor processing technology of the terminal box body, thin material, and long service life, The terminal box door is easily deformed in the environment where the temperature difference between day and night increases, resulting in the exposure of the sealing strip. The sealing strip is easily aged and brittle after being exposed to strong ultraviolet rays, and loses its sealing effect.

After the sealing strip loses its sealing effect, sand, dust and rainwater can easily enter the terminal box, thus forming moisture and condensation in the terminal box. Moisture plus sand rich in salt and alkali will quickly lead to corrosion of the cabinet, and the most dangerous thing is to cause corrosion of the secondary wiring terminals, which may cause short circuits and grounding of the AC and DC circuits. If the terminals are severely corroded, it may also cause secondary The circuit is in poor contact, or the terminal falls off, which will cause the protection to refuse to operate, and cause hidden dangers to people, power grids, and equipment.

In related technologies, the method of manually cleaning the terminal box is mostly used to solve the above-mentioned problems, but this method is time-consuming and laborious, treats the symptoms but not the root cause, and cannot completely remove the sand and dust in the terminal parts. In addition, if the entire terminal box is modified and replaced, not only the cost is high, but also the power supply reliability will be reduced due to the power failure of the terminal box replacement.

Contents of the invention

In view of the above problems, the present invention provides a low-cost, tightly sealed, rain-proof and sand-proof three-point locking terminal box.

The object of the present invention adopts following technical scheme to realize:

A three-point locking terminal box is provided, including a box body with an opening and a door with a door lock in the middle, a first lock hole is provided on the upper side of the door, and a second lock hole is provided on the lower side of the door , the positions corresponding to the first keyhole and the second keyhole on the side wall of the box body are respectively equipped with a key type bayonet pin lock; the top of the box body is detachably installed with a Hollow wind and sand cover, the surrounding edges of the wind and sand cover extend laterally outside the side wall of the box body, the side wall of the wind and sand cover is provided with a light opening, the light opening is sealed by a heat absorbing plate, the wind and sand cover The bottom wall is provided with an annular groove matching the edge of the box, and the middle surrounded by the annular groove is provided with a communication port connected with the interior of the box and equipped with a sand filter. The periphery of the communication port is provided with water-absorbing and moisture-proof materials Bag.

Wherein, the bottom wall of the wind-proof and sand-proof cover protrudes from the edge of the side wall of the box to provide heat dissipation ventilation holes.

Wherein, the first lock hole and the second lock hole are symmetrical about the central transverse axis of the box door.

Further, the upper left side of the box body and the lower right side are respectively provided with convective moisture-removing holes, and the convective-type moisture-removing holes are detachably installed with a sand filter.

Further, a sealing groove matching with the periphery of the box door is provided around the opening, a sealing strip is provided on the surface of the sealing groove, and the inner surface of the box door is pressed against the sealing strip after the box door is closed. form a seal.

Preferably, the sealing groove is an L-shaped groove.

Preferably, the sealing strip is an airbag type sealing strip; the sealing strip may also be a rubber sealing strip.

The beneficial effects of the present invention are:

1. By setting the door lock in the middle of the box door, the first lock hole, the second lock hole and the corresponding one-button bayonet pin lock, the three-point locking of the terminal box is realized, which avoids the long-term closing process of the terminal box door The box door is deformed, warped and not tightly sealed, and the cost is low, the operation is simple, and the maintenance is convenient;

2. By setting up wind and sand-proof covers, water-absorbing and moisture-proof material bags and convective moisture-removing holes, further improve the anti-sand and anti-sand ability of the terminal box;

3. By setting a sealing groove around the opening to match the periphery of the box door, and setting a sealing strip on the surface of the sealing groove, rainwater can be discharged along the sealing groove to prevent dust from entering and rainwater from infiltrating.

Description of drawings

The present invention is further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without paying creative work, other embodiments can also be obtained according to the following accompanying drawings Attached picture.

Fig. 1 is the front structure schematic diagram of the present invention;

Fig. 2 is a schematic view of the front structure of the box body of the present invention.

Fig. 3 is a schematic view inside the bottom wall of the windproof and sandproof cover of the present invention.

Reference signs: box door 1, box body 2, door lock 3, first lock hole 4, second lock hole 5, one-button bayonet pin lock 6, wind and sand cover 7, annular groove 8, communication port 9 , heat dissipation ventilation hole 10, L-shaped sealing groove 11, airbag type sealing strip 12, opening 13, water-absorbing and moisture-proof material bag 14.

Detailed ways

The present invention is further described in conjunction with the following examples.

The three-point locking terminal box includes a box body 2 with an opening 13 and a box door 1 with a door lock 3 in the middle, and the box body 2 is hinged to one side of the box door 1 through hinges.

The upper side of the box door 1 is provided with a first lock hole 4, and the lower side of the box door 1 is provided with a second lock hole 5, and the side wall of the box body 2 corresponds to the first lock hole 4, the second lock hole The positions of the lock holes 5 are respectively equipped with a one-button bayonet pin lock 6 . Wherein, the first lock hole 4 and the second lock hole 5 are symmetrical about the central transverse axis of the box door 1 . The terminal box realizes three-point locking by setting the door lock 3, the first lock hole 4, the second lock hole 5 and the one-button bayonet pin lock 6, which avoids the deformation of the box door caused by the long-term closing process of the terminal box box door , tilted corners, poor sealing, etc., and adopts a one-button bayonet pin lock 6, which is easy to operate and maintain. While protecting the sealing effect of the terminal box, it does not greatly increase the time and procedures for closing the terminal box.

The top of described box body 2 is detachably installed with triangular body shape, and the windproof sand cover 7 that is hollow inside, the peripheral edge of described windproof sand cover 7 laterally protrudes outside the sidewall of box body 2, and the windproof sand cover 7 The side wall is provided with a light opening, and the light opening is covered by a heat-absorbing plate. The bottom wall of the windproof sand cover 7 is provided with an annular groove 8 cooperating with the edge of the box body 2, and the center surrounded by the annular groove 8 is provided with There is a communication port 9 communicating with the inside of the box body 2 and equipped with a wind-sand filter. The periphery of the communication port 9 is provided with a water-absorbing and moisture-proof material bag 14 .

Wherein, the wind-sand filter is detachably installed on the bottom wall of the wind-sand protection cover 7 by several fasteners and covers the communication port 9 .

Wherein, the bottom wall of the wind and sand protection cover 7 protrudes from the outer edge of the side wall of the box body 2 to provide heat dissipation ventilation holes 10 .

Further, the upper left side and the lower right side of the box body 2 are respectively provided with convective moisture-removing holes, and the convective-type moisture-removing holes are detachably installed with a sand filter.

Further, an L-shaped sealing groove 11 matching with the periphery of the box door 1 is provided around the opening 13, and an airbag-type sealing strip 12 is provided on the surface of the L-shaped sealing groove 11, and the box door 1 is closed. The inner surface of said box door 1 is pressed on the airbag type sealing strip 12 to form a seal, and rainwater can be discharged along the L-shaped sealing groove 11, so as to prevent dust from entering and prevent rainwater from infiltrating.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (7)

1. Three-point locking terminal box, including a box body with an opening and a box door with a door lock in the middle. It is characterized in that the upper side of the box door is provided with a first lock hole, and the lower side of the box door is provided with The second lock hole, the position corresponding to the first lock hole and the second lock hole on the side wall of the box body is respectively equipped with a key type bayonet pin lock; the top of the box body is detachably installed with a triangular body shape, the inside is a hollow sand-proof cover, the surrounding edges of the sand-proof cover extend laterally out of the side wall of the box body, the side wall of the sand-proof cover is provided with a light opening, and the light opening is covered by a heat-absorbing plate. The bottom wall of the anti-wind and sand cover is provided with an annular groove that matches the edge of the box body. The middle part surrounded by the annular groove is provided with a communication port that communicates with the inside of the box body and is equipped with a sand filter. The periphery of the communication port is provided with There is a water-absorbing and moisture-proof material bag. 2 . The three-point locking terminal box according to claim 1 , wherein the first locking hole and the second locking hole are symmetrical about the central transverse axis of the box door. 3 . The three-point locking terminal box according to claim 1 , wherein the bottom wall of the windproof and sand-proof cover protrudes from the side wall of the box body and is provided with heat dissipation ventilation holes. 4 . 4. The three-point locking terminal box according to claim 1, characterized in that, the upper left side and the lower right side of the box are respectively provided with convective moisture-removing holes, and the convective-type moisture-removing holes A wind sand filter is installed detachably. 5. The three-point locking terminal box according to claim 1, characterized in that, a sealing groove matching with the periphery of the box door is provided around the opening, and a sealing strip is provided on the surface of the sealing groove, so that After the box door is closed, the inner surface of the box door is pressed against the sealing strip to form a seal. 6. The three-point locking terminal box according to claim 5, wherein the sealing groove is an L-shaped groove. 7 . The three-point locking terminal box according to claim 5 , wherein the sealing strip is an air bag type sealing strip.