CN210460247U

CN210460247U - Block terminal chamber door locking device

Info

Publication number: CN210460247U
Application number: CN201921004330.2U
Authority: CN
Inventors: 彭翔; 廖光明
Original assignee: Chongqing Jingli Electrical Appliance Co ltd
Current assignee: Chongqing Jingli Electrical Appliance Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-05-05
Anticipated expiration: 2029-06-28

Abstract

The utility model relates to the technical field of power supply equipment, in particular to a locking device for a box door of a distribution box; the technical scheme is as follows: a distribution box door locking device comprises a fixed shaft sleeve, wherein one end of the fixed shaft sleeve is provided with a convex shoulder, the other end of the fixed shaft sleeve is in threaded connection with a compression nut, a sealing gasket is further arranged between the convex shoulder and the compression nut, a slidable rotating shaft is adapted in the fixed shaft sleeve, two ends of the rotating shaft are both positioned outside the fixed shaft sleeve, and a sealing ring is arranged between the rotating shaft and the fixed shaft sleeve; the one end of pivot and convex shoulder homonymy is fixed with the clamp plate, the clamp plate is used for compressing tightly block terminal box lateral wall flange, the pivot other pot head is equipped with the adjusting part, the one end of pivot and adjusting part homonymy is equipped with twist grip, the adjusting part and pivot spiro union. The utility model discloses the degree that compresses tightly of adjustable block terminal chamber door and box, when needing the unblock, then only need unscrew adjusting part or rotatory twist grip can, overhaul, maintenance, easy operation are swift.

Description

Block terminal chamber door locking device

Technical Field

The utility model relates to a power supply unit technical field, concretely relates to block terminal chamber door locking device.

Background

The distribution box is mainly used for opening and closing, controlling and protecting power equipment of electric equipment in the process of generating, transmitting, distributing and converting electric energy in a power system. The components inside the distribution box mainly include a circuit breaker, a disconnector, a load switch, an operating mechanism, various protection circuits, and the like. Under some special operational environment, need use the block terminal that has sealing performance, big, the salinity is many in the air like the door machine block terminal environmental humidity of pier, if adopt the poor block terminal of sealing performance, inside electric elements is very easily corroded, life is short. And if the explosion-proof distribution box is used in an inflammable and explosive environment, great potential safety hazard exists if the sealing is not tight. The most influence on the sealing performance of the distribution box is the box door of the distribution box, and the existing sealed distribution box mostly adopts the mode that a sealing ring is arranged on the box door or a box body, and then the box door is tightly pressed through a plate buckle or a door lock. However, rubber is easy to age, and the pressing force of the plate-locking door lock is limited, so that after the distribution box is used for a long time, the sealing performance of the distribution box cannot be guaranteed, and the service life of the distribution box is short.

SUMMERY OF THE UTILITY MODEL

To the technical problem that above-mentioned current sealed block terminal chamber door locking device locking pressure is low, the utility model provides a block terminal chamber door locking device can provide great packing force, ensures the sealing performance of block terminal, has simple structure, the swift characteristics of operation.

The utility model discloses a following technical scheme realizes:

a distribution box door locking device comprises a fixed shaft sleeve, wherein one end of the fixed shaft sleeve is provided with a convex shoulder, the other end of the fixed shaft sleeve is in threaded connection with a compression nut, a sealing gasket is further arranged between the convex shoulder and the compression nut, a slidable rotating shaft is adapted in the fixed shaft sleeve, two ends of the rotating shaft are both positioned outside the fixed shaft sleeve, and a sealing ring is arranged between the rotating shaft and the fixed shaft sleeve; the one end of pivot and convex shoulder homonymy is fixed with the clamp plate, the clamp plate is used for compressing tightly block terminal box lateral wall flange, the pivot other pot head is equipped with the adjusting part, the one end of pivot and adjusting part homonymy is equipped with twist grip, the adjusting part and pivot spiro union. The distance between the door plate and the distribution box body is adjusted through the rotary adjusting piece, the compression degree of the box door and the box body of the distribution box can be adjusted, and the adjustment is convenient. Meanwhile, the door plate is pressed by the pressing plate, and the pressing plate is fastened through threads, so that the locking is more reliable compared with locking modes such as plate fasteners and the like. In addition, when the unlocking is needed, the adjusting piece is only required to be unscrewed or the rotating handle is only required to be rotated, and the overhauling, maintenance and operation are simple and rapid.

Preferably, the side wall of one end of the fixed shaft sleeve, which is at the same side as the pressure plate, is provided with a limiting structure, the limiting structure is used for limiting the rotation of the pressure plate, the counterclockwise rotation angle of the pressure plate, which takes the horizontal direction as a starting point, is less than 270 degrees, and the situation that the pressure plate moves to cause the locking failure when the adjusting piece is adjusted can be prevented.

Preferably, the limiting structure is an arc bulge concentric with the fixed shaft sleeve, and the limiting structure is simple in structure and convenient to process.

Preferably, the adjusting piece is a nut, and a deflector rod is radially fixed on one side wall of the nut, so that the adjusting piece can be adjusted conveniently.

Preferably, the pressing plate is in a right trapezoid shape or a right triangle shape, so that the contact area of the pressing plate and the flange of the distribution box body is increased, and the flange of the distribution box is prevented from being deformed due to overlarge pressing force.

Optionally, the pressing plate is fan-shaped, and the fan-shaped arc edge includes a straight line segment and an arc line segment, so as to further increase the contact area between the pressing plate and the distribution box body flange.

Preferably, a protection gasket is matched between the compression nut and the sealing washer to protect the surface of the box door of the distribution box and ensure the corrosion resistance of the box door of the distribution box.

Preferably, the protective gasket comprises a sliding sheet made of polytetrafluoroethylene, a step hole is formed in the middle of the sliding sheet, a metal gasket is matched in the step hole, and the height of the metal gasket is larger than the thickness of the sliding sheet.

Preferably, a spring washer is matched between the compression nut and the adjusting piece, so that the shock resistance of the locking device is improved, and the situation that the sealing performance of the distribution box is influenced due to the fact that the locking device is loosened when the distribution box is vibrated is avoided.

Preferably, the sealing ring is made of ethylene propylene diene monomer, and the ethylene propylene diene monomer contains polytetrafluoroethylene. The ethylene propylene diene monomer containing the polytetrafluoroethylene has good oxidation resistance and weather resistance and self-lubricating property, so that the sealing ring can be protected, and the sealing property between the rotating shaft and the fixed shaft sleeve is ensured.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the locking device comprises a fixed shaft sleeve, a rotating shaft and a pressing plate, an adjusting piece is screwed at the outer end of the rotating shaft, the distance between the door plate and the box body of the distribution box is adjusted by rotating the adjusting piece, the compression degree of the box door and the box body of the distribution box can be adjusted, and the adjustment is convenient. Meanwhile, the door plate is pressed by the pressing plate, and the pressing plate is fastened through threads, so that the locking force is large and the locking is more reliable compared with locking modes such as plate buckles. In addition, when the unlocking is needed, the adjusting piece is only required to be unscrewed or the rotating handle is only required to be rotated, and the overhauling, maintenance and operation are simple and rapid.

2. A protection gasket is matched between the compression nut and the sealing washer to protect the surface of the box door of the distribution box and ensure the corrosion resistance of the box door of the distribution box. The protection gasket comprises a sliding sheet made of polytetrafluoroethylene, and a metal gasket is arranged in the sliding sheet, so that when the shaft sleeve is fastened and fixed, the fixed shaft sleeve can be prevented from scratching a baking varnish or a phosphate coating on the surface of a box door of the distribution box.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the utility model.

Reference numbers and corresponding part names in the drawings:

the method comprises the following steps of 1-fixing a shaft sleeve, 2-shoulder, 3-compression nut, 4-sealing washer, 5-rotating shaft, 6-pressing plate, 61-straight line segment, 62-arc segment, 7-adjusting piece, 8-rotating handle, 9-limiting mechanism, 10-sealing ring, 11-deflector rod, 12-protective washer, 13-sliding piece, 15-metal washer and 16-spring washer.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

The utility model provides a block terminal chamber door locking device, includes

fixed axle sleeve

1, 1 one end of fixed axle sleeve is equipped with

convex shoulder

2, 1 other end spiro union of fixed axle sleeve has gland nut 3, still be equipped with seal ring 4 between convex shoulder 2 and the gland nut 3. Particularly, when the sealing washer 4 is installed, the rest shoulder 2 on the same side can realize the sealing and fixing connection of the fixing shaft sleeve 1 and the box door of the distribution box. The adaptation has slidable pivot 5 in the

fixed axle sleeve

1, 5 both ends in pivot all are located fixed axle sleeve 1 outside, be equipped with sealing ring 10 between pivot 5 and the fixed axle sleeve 1, that is to say, pivot 5 can be in fixed axle sleeve 1 along fixed axle sleeve 1 endwise slip, also can be at fixed axle sleeve 1 internal rotation. And a pressing plate 6 is fixed at one end of the rotating shaft 5, which is at the same side with the shoulder 2, and the pressing plate 6 is used for pressing a flange on the side wall of the distribution box body. The other pot head of pivot 5 is equipped with adjusting part 7, the one end of pivot 5 and adjusting part 7 homonymy is equipped with twist grip 8, adjusting

part

7 and 5 spiro unions of pivot.

The distance between the door plate and the distribution box body is adjusted through rotating the adjusting piece 7, the compression degree of the distribution box door and the distribution box body can be adjusted, and the adjustment is convenient. Meanwhile, the door plate is pressed by the pressing plate 6, and the pressing plate 6 is fastened through threads, so that the locking force is large and the locking is more reliable compared with locking modes such as plate buckles and the like. In addition, when the unlocking is needed, only the adjusting piece 7 needs to be unscrewed or the rotating handle 8 needs to be rotated, and the overhauling, maintenance and operation are simple and quick. Wherein the adjusting member 7 can be a nut or other part having a threaded hole in the middle, such as a cylindrical threaded sleeve with knurling on the side wall, a wrench with a threaded hole, etc.

Furthermore, the side wall of one end of the fixed shaft sleeve 1, which is located at the same side as the pressing plate 6, is provided with a limiting structure 9, the limiting structure 9 is used for limiting the rotation of the pressing plate 6, the counterclockwise rotation angle of the pressing plate 6, which takes the horizontal direction as the starting point, is smaller than 270 degrees, and the situation that the pressing plate moves to cause the locking failure when the adjusting piece is adjusted can be prevented. Limit structure 9 can be waist type hole, arch, shelves round pin etc. of setting at fixed axle sleeve 1 lateral wall, and the protruding mode of arc is adopted to this embodiment, promptly limit structure 9 is protruding for the circular arc with fixed axle sleeve 1 concentricity, simple structure, processing of being convenient for.

As a specific embodiment of the adjusting member, the adjusting member 7 is a nut, and a shift lever 11 is radially fixed to a side wall of the nut. Therefore, the adjusting piece 7 can be rotated through the shift lever 11, and the adjusting piece 7 can be adjusted without using a tool such as a wrench, and the adjusting piece 7 is convenient to adjust.

Preferably, the pressing plate 6 is a right trapezoid or a right triangle. It can be understood that, when the chamber door was locked, right trapezoid's right angle waist limit was parallel with block terminal box lateral wall, and right trapezoid's acute angle portion is fixed in pivot 2 to area of contact between increase clamp plate 6 and the block terminal box flange prevents that block terminal box flange warp. Wherein, for the pressing plate 6 of the right triangle, when the locking is carried out, the longer right-angle side is parallel to the side wall of the distribution box body.

Alternatively, as shown in fig. 2, the pressing plate 6 has a fan shape, and the arc side of the fan shape includes a straight line segment 61 and an arc line segment 62. It can be understood that the pressing plate 6 is of a polygonal structure, when the box door is locked, the pressing plate 6 faces one side of the flange of the distribution box body, the horizontal plane is used as a boundary, the upper end of the pressing plate is a straight line section 61 parallel to the side wall of the distribution box body, and the lower end of the pressing plate is an arc line section 62 taking the distance from the straight line section 61 to the axis of the rotating shaft 5 as a radius. The contact area between the pressure plate 6 and the flange of the distribution box casing can be further increased.

Preferably, a protection gasket 12 is fitted between the compression nut 3 and the sealing gasket 4 to protect the surface of the distribution box door and ensure the corrosion resistance of the distribution box door. It should be noted that the protective gasket 12 should have a certain pressure resistance, and the friction coefficients of both ends and metal are different, and one end surface with a large friction system is pressed on the surface of the door of the distribution box, while the other end surface is pressed under the gland nut 3, and a metal gasket with two rough end surfaces can be used. When the compression nut 3 rotates, the friction force between the rest protection gaskets 12 of the compression nut 3 is smaller than the friction force between the protection gaskets 12 and the distribution box door, so that the protection gaskets 12 cannot rotate on the surface of the distribution box door, and the surface of the distribution box door is protected. (distribution box doors usually have a varnish or phosphate coating on the surface to improve the corrosion resistance of the door)

As a specific embodiment of the protective pad 12, the protective pad 12 comprises a sliding sheet 13 made of teflon, and a stepped hole is formed in the middle of the sliding sheet 13, and a metal washer 15 is fitted in the stepped hole. The metal washer 15 has a height greater than the thickness of the slider 13. Because the polytetrafluoroethylene has a self-lubricating effect, the friction coefficient between the sliding sheet 13 and the metal is low, so when the compression nut 3 is rotated, the compression nut 3 and the sliding sheet 13 relatively rotate or the sliding sheet 13 is driven to rotate.

Preferably, a spring washer 16 is also fitted between the compression nut 3 and the adjusting element 7. The spring washer 16 can absorb the impact force between the compression nut 3 and the adjusting piece 7, so that the shock resistance of the locking device is improved, and the situation that the sealing performance of the distribution box is influenced due to the fact that the locking device is loosened when the distribution box is vibrated is avoided.

Preferably, the sealing ring 10 is made of ethylene propylene diene monomer, and the ethylene propylene diene monomer contains polytetrafluoroethylene. The ethylene propylene diene monomer containing the polytetrafluoroethylene has good oxidation resistance and weather resistance and self-lubricating property, so that the sealing ring can be protected, and the sealing property between the rotating shaft and the fixed shaft sleeve is ensured.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a block terminal chamber door locking device, includes fixed axle sleeve (1), fixed axle sleeve (1) one end is equipped with convex shoulder (2), fixed axle sleeve (1) other end spiro union has gland nut (3), its characterized in that: a sealing washer (4) is arranged between the convex shoulder (2) and the compression nut (3), a slidable rotating shaft (5) is adapted in the fixed shaft sleeve (1), two ends of the rotating shaft (5) are both positioned outside the fixed shaft sleeve (1), and a sealing ring (10) is arranged between the rotating shaft (5) and the fixed shaft sleeve (1);

pivot (5) are fixed with clamp plate (6) with the one end of convex shoulder (2) homonymy, clamp plate (6) are used for compressing tightly block terminal box lateral wall flange, pivot (5) other pot head is equipped with adjusting part (7), pivot (5) are equipped with twist grip (8) with the one end of adjusting part (7) homonymy, adjusting part (7) and pivot (5) spiro union.

2. The electrical box door locking apparatus of claim 1, wherein: the side wall of one end of the fixed shaft sleeve (1) on the same side as the pressing plate (6) is provided with a limiting structure (9), the limiting structure (9) is used for limiting the rotation of the pressing plate (6), and the counterclockwise rotation angle of the pressing plate (6) taking the horizontal direction as a starting point is smaller than 270 degrees.

3. The electrical box door locking apparatus of claim 2, wherein: the limiting structure (9) is an arc bulge concentric with the fixed shaft sleeve (1).

4. The electrical box door locking apparatus of claim 1, wherein: the adjusting piece (7) is a nut, and a deflector rod (11) is radially fixed on one side wall of the nut.

5. The distribution box door locking device according to any one of claims 1 to 4, wherein: the pressing plate (6) is in a right trapezoid shape or a right triangle shape.

6. The distribution box door locking device according to any one of claims 1 to 4, wherein: the pressing plate (6) is fan-shaped, and the arc edge of the fan-shaped comprises a straight line segment and an arc line segment.

7. The electrical box door locking apparatus of claim 5, wherein: and a protective gasket (12) is matched between the compression nut (3) and the sealing washer (4).

8. The electrical box door locking apparatus of claim 7, wherein: the protection gasket (12) includes the slide (13) that polytetrafluoroethylene made, slide (13) middle part is equipped with the step hole, the downthehole metal packing ring (15) of being fit for of step, the height of metal packing ring (15) is greater than the thickness of slide (13).

9. The electrical box door locking apparatus of claim 1, wherein: and a spring washer (16) is also matched between the compression nut (3) and the adjusting piece (7).

10. The electrical box door locking apparatus of claim 1, wherein: the sealing ring (10) is made of ethylene propylene diene monomer, and the ethylene propylene diene monomer contains polytetrafluoroethylene.