CN213151377U - Outdoor drop-out fuse box structure - Google Patents

Abstract

An outdoor drop-out fuse box body structure comprises a drop-out fuse, a box body is arranged outside the drop-out fuse, the front box wall of the box body is divided into an upper part and a lower part, and the lower part of the front box wall is provided with a transverse horizontal rotating shaft which can swing around the transverse horizontal rotating shaft; the bottom edge of the lower part of the front box wall is also vertically connected with a folded plate; the box bottom plate is also provided with an operation notch; an air pressure brace rod is also arranged between the lower part of the front box wall and the side walls of the left box and the right box; the foldable plate at the lower part of the front box wall is provided with a left strip-shaped lock bracket rod and a right strip-shaped lock bracket rod, the lock bracket rods are provided with wedge-shaped lock tongues in a transverse sliding manner, and the foldable plate is also provided with an operation knob piece which consists of a pull ring, a cylindrical rotating shaft and an elliptic core block; the box body is also provided with a left fixed bolt fastener and a right fixed bolt fastener. The utility model discloses have the protection box, operating personnel can stand on ground and utilize specialized tool to operate drop out fuse moreover.

Description

Outdoor drop-out fuse box structure

Technical Field

The utility model belongs to the technical field of distribution equipment, concretely relates to outdoor drop out fuse box structure.

Background

The drop-out fuse is a common short-circuit protection switch of a 10kV distribution network and is mainly applied to the high-voltage side of a transformer in the distribution network, the tail end of a line or a branch line with a small load. The drop-out fuse is installed on an outdoor column like a transformer, and the distance between the drop-out fuse and the ground is generally four to five meters.

When the transformer and the line are overloaded or short-circuited, the fuse wire of the drop-out fuse is fused, the moving contact of the fuse tube loses the tension of the fuse wire, and the fuse tube drops under the action of the gravity of the moving contact of the fuse tube, so that the fault equipment or the fault line is quickly and effectively cut off. The fusion tube has obvious disconnection point after falling, and has the function of an isolating switch. After the fusion tube falls, the fusion tube must be immediately overhauled, and the power can not be cut off during the overhaul. The existing drop-out fuse is generally designed to be an open type in order to enable personnel standing on the ground to be capable of live-line operation, and a protective box body is not arranged, so that under the condition of live-line, the personnel standing on the ground can easily extend obliquely upwards to the drop-out fuse by using a special operating tool to operate, and therefore the operators do not need to approach the drop-out fuse, and safety is ensured.

However, since the drop-out fuse is of an open type, the following problems arise: 1. part of the outdoor column drop-out fuse is installed in a residential building area, and because the protective box body is not arranged and can be close to a residential window or a balcony, the personal safety of nearby residents can be threatened, so that a power supply bureau is often complained by residents; 2. the drop-out fuse is exposed to rain and sunshine, and the service life is short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming and provide an outdoor drop out fuse box structure, it has the protection box, and operating personnel can stand on ground and utilize specialized tool to operate drop out fuse moreover.

The purpose can be realized according to the following scheme: an outdoor drop-out fuse box body structure comprises a drop-out fuse and is mainly characterized in that a box body is arranged outside the drop-out fuse, and the box body comprises a box cover, a left box wall, a right box wall, a front box wall, a rear box wall and a box bottom plate; the front box wall is divided into an upper part and a lower part, and the lower part of the front box wall is provided with a transverse horizontal rotating shaft and can swing around the transverse horizontal rotating shaft; the bottom edge of the lower part of the front box wall is also vertically connected with a folded plate; the box bottom plate is also provided with an operation notch, and when the lower part of the front box wall swings to a vertical state, the folded plate at the lower part of the front box wall covers the operation notch of the box bottom plate; an air pressure support rod is arranged between the lower part of the front box wall and the side walls of the left box and the right box, and the elastic direction of the air pressure support rod enables the lower part of the front box wall to swing forwards so that the folded plate of the lower part of the front box wall is staggered with the operation notch of the box bottom plate;

the left wedge-shaped lock bolt is arranged on the right side lock support rod in a transverse sliding manner, the right wedge-shaped lock bolt is arranged on the right side lock support rod in a transverse sliding manner, a left reset spring is further arranged on the left side lock support rod, and the left reset spring applies left thrust to the left wedge-shaped lock bolt; a right reset spring is also arranged on the right lockset support rod and applies right thrust to the right wedge-shaped lock tongue; the left lockset support rod and the right lockset support rod can be respectively arranged on the folded plate in a transverse sliding way; the control knob piece is composed of a pull ring, a cylindrical rotating shaft and an oval core block; the folding plate is also provided with a circular shaft sleeve, a cylindrical rotating shaft of the operation knob piece is arranged in the circular shaft sleeve, the pull ring is positioned below the circular shaft sleeve and is exposed outside the box body, and the oval core block is positioned above the circular shaft sleeve;

a horizontal thrust spring is arranged between the left lock support rod and the right lock support rod, the horizontal thrust spring applies leftward elasticity to the left lock support rod, and the horizontal thrust spring applies rightward elasticity to the right lock support rod; the left lock support rod is provided with a first hollowed hole, the right lock support rod is provided with a second hollowed hole, and the transverse widths of the first hollowed hole and the second hollowed hole are both larger than the diameter of the elliptic major axis of the elliptic core block; the oval core block penetrates through the first hollowed-out hole and the second hollowed-out hole, the right side hole edge of the first hollowed-out hole contacts the oval core block, and the left side hole edge of the second hollowed-out hole contacts the oval core block;

the box body is also provided with a left fixed lock tongue fastener and a right fixed lock tongue fastener; the position of the left bolt fastener is matched with the position of the left wedge-shaped bolt, and the position of the right bolt fastener is matched with the position of the right wedge-shaped bolt;

when the lower part of the front box wall swings to a vertical state, the left wedge-shaped lock tongue protrudes leftwards relative to the left lock support rod, the right wedge-shaped lock tongue protrudes rightwards relative to the right lock support rod, and the elliptical short axis of the elliptical core block is transverse, the left wedge-shaped lock tongue is positioned behind the left lock tongue fastener, and the right wedge-shaped lock tongue is positioned behind the right lock tongue fastener;

when the current box wall part down swung to vertical state, left wedge spring bolt was held out left for left side tool to lock cradling piece, right wedge spring bolt was held out right for right side tool to lock cradling piece, and the oval major axis of oval pellet was horizontal, the lateral position and the left spring bolt fastener of left wedge spring bolt staggered, the lateral position and the right spring bolt fastener of right wedge spring bolt staggered.

The lower part of the front box wall is provided with a transparent observation window, so that whether the fusible core tube falls down or not can be observed under the condition that the box door is not opened.

The utility model has the advantages of it is following and effect:

firstly, the utility model discloses a drop out fuse is equipped with seal box, has rain-proof, sun-proof function, and more importantly, guarantees near resident's personal safety.

Second, the chamber door that preceding box wall part and folded plate down can regard as the box can, and operating personnel stands and just can operate the box on ground and open or be closed, and the back is opened to the chamber door, and the operation breach of bottom of the case board is no longer covered to the folded plate of preceding box wall part down, and preceding box wall part down also opens, therefore forms the operation passageway that can supply special operating tool to stretch into the box the inside to one side, and then operating personnel can stand on ground and utilize special operating tool to operate drop out fuse.

Drawings

Fig. 1 is a schematic diagram of a side view projection structure of an embodiment of the present invention in a closed state of a door.

Fig. 2 is a schematic view of a state of use of the structure shown in fig. 1.

Fig. 3 is a perspective view of the structure shown in fig. 2.

Fig. 4 is a perspective view of the cabinet having the structure shown in fig. 1, after the door is opened.

Fig. 5 is a perspective view of the door of fig. 4, the horizontal direction of the viewing angles of fig. 5 and 4 being different by 180 degrees.

Fig. 6 is a partially enlarged schematic view of B in fig. 5.

Fig. 7 is a partially enlarged schematic view of a in fig. 5.

Fig. 8 is a perspective view of the manipulation knob member.

FIG. 9 is an assembled view of the left and right latch bracket bars of FIG. 5.

Fig. 10 is a partially enlarged schematic view of C in fig. 9.

Fig. 11 is a perspective view of a right side lock bracket bar.

Fig. 12 is a perspective view of a left side latch stand bar.

FIG. 13 is an assembled cross-sectional view of the left and right latch bracket bars of FIG. 5.

Fig. 14 is an enlarged view of a portion D of fig. 13.

Fig. 15 is an enlarged view of part E of fig. 13.

Fig. 16 is an enlarged view of part F of fig. 13.

Fig. 17 is a schematic view showing the engagement state of the left and right wedge-shaped bolts and the left and right bolt fasteners in the door closed state (when the minor axis direction of the oval core block is horizontal).

Fig. 18 is a perspective view illustrating a changed state of the elliptical core block of fig. 6 after being rotated by 90 degrees.

Fig. 19 is a perspective view illustrating a changed state of the elliptical core block of fig. 15 after being rotated by 90 degrees.

Fig. 20 is a perspective view illustrating a changed state of the elliptical core block of fig. 10 after being rotated by 90 degrees.

Fig. 21 is a schematic view showing the state of engagement between the left and right wedge-shaped lock tongues and the left and right lock tongue fasteners when the long axis direction of the oval core block is horizontal.

Fig. 22 is a perspective view illustrating a changed state of the door of fig. 3 after being opened.

Fig. 23 is a perspective view illustrating a changed state of the door of fig. 1 after being opened.

Detailed Description

Fig. 1 and 17 show an outdoor drop-out fuse box structure, which includes a drop-out fuse 8, a box 1 is arranged outside the drop-out fuse 8, and the box 1 includes a box cover 16, a left box wall 13, a right box wall 14, a front box wall, a rear box wall 12, and a box bottom plate 15; the front box wall is divided into an upper part and a lower part, namely a front box wall upper part 111 and a front box wall lower part 112, and the front box wall lower part is provided with a transparent observation window 1120.

As shown in fig. 1 and 4, the lower part 112 of the front box wall is provided with a horizontal rotating shaft 113 so as to swing around the horizontal rotating shaft 113; the bottom edge of the lower part 112 of the front box wall is also vertically connected with a folded plate 17, and the lower part 112 of the front box wall and the folded plate 17 form a box door of the box body 1; the box bottom plate 15 is also provided with an operation notch 18, and when the front box wall lower part 112 swings to a vertical state, the folded plate 17 of the front box wall lower part 112 covers the operation notch 18 of the box bottom plate; an air pressure brace 82 is also arranged between the lower part 112 of the front box wall and the left and right box side walls 13, and the elastic direction of the air pressure brace 82 enables the lower part 112 of the front box wall to swing forwards so as to enable the folded plate 17 of the lower part of the front box wall to be staggered with the operation notch 18 of the box bottom plate.

Fig. 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16 show that the folding plate 17 at the lower part of the front box wall is provided with a left and a right long strip-shaped lock bracket rods, namely a left lock bracket rod 31 and a right lock bracket rod 32, in fig. 5 to 19, because the posture of each component is horizontally turned 180 degrees from the posture of fig. 1 and 4, in fig. 5 to 21, the component at the left side of the product is positioned at the right side of the drawing, and the component at the right side of the product is positioned at the left side of the drawing; a right return spring 52 is further mounted on the right lock support rod 32, and the right return spring 52 applies a right thrust to the right wedge-shaped bolt 42; the left lock support rod 31 and the right lock support rod 32 are respectively arranged on the horizontal folded plate 17 in a transversely sliding manner by utilizing the sliding sleeves 3, wherein each sliding sleeve 3 is fixedly connected with the folded plate 17, and each sliding sleeve 3 is respectively sleeved outside the left lock support rod 31 and the right lock support rod 32; a control knob piece 9 is also arranged, and the control knob piece 9 consists of a pull ring 91, a cylindrical rotating shaft 92 and an oval core block 93 (shown in figures 8, 15 and 19);

as shown in fig. 15 and 20, a circular shaft sleeve 19 is further mounted on the folded plate 17, a cylindrical rotating shaft 92 of an operation knob piece is mounted in the circular shaft sleeve 19, a pull ring 91 is located below the circular shaft sleeve 19 and exposed outside the box body 1, an elliptical core block 93 is located above the circular shaft sleeve 92, a first touch plate 21 is fixedly connected to the left lock support rod 31, a second touch plate 22 is fixedly connected to the right lock support rod 32, a horizontal thrust spring 23 is further disposed between the first touch plate 21 of the left lock support rod 31 and the second touch plate 22 of the right lock support rod 32, the horizontal thrust spring 23 applies a left elastic force to the first touch plate 21 of the left lock support rod, and the horizontal thrust spring 23 applies a right elastic force to the second touch plate 22 of the right lock support rod;

as shown in fig. 6 to 16, the left lock support rod 31 is provided with a first hollow hole 61 (shown as MNQP in fig. 10 and 20), the right lock support rod 32 is provided with a second hollow hole 62 (shown as GHJK in fig. 10 and 20), and the transverse widths of the first hollow hole 61 and the second hollow hole 62 are both greater than the elliptical major axis diameter of the elliptical core block 93; the oval core block 93 passes through the first hollowed hole 61 of the left lock bracket rod 31 and the second hollowed hole of the right lock bracket rod 32, the right hole edge of the first hollowed hole 61 contacts the oval core block 93, and the left hole edge of the second hollowed hole 62 contacts the oval core block;

as shown in fig. 7, 20, 17 and 21, the box body is further provided with a left latch fastener 71 and a right latch fastener 72 which are fixed; the position of the left bolt fastener 71 is matched with the position of the left wedge-shaped bolt 41, and the position of the right bolt fastener 72 is matched with the position of the right wedge-shaped bolt 42;

when the front box wall lower part 112 swings to a vertical state, the left wedge-shaped bolt 41 protrudes leftward relative to the left lock support rod 31, the right wedge-shaped bolt 42 protrudes rightward relative to the right lock support rod 32, and the elliptical short axis of the elliptical core block 93 is transverse, the left wedge-shaped bolt 41 is located behind the left bolt fastener 71, and the right wedge-shaped bolt 42 is located behind the right bolt fastener 27, as shown in fig. 17;

when the front box wall lower part 112 swings to a vertical state, the left wedge-shaped bolt 41 protrudes leftward relative to the left lock support rod 31, the right wedge-shaped bolt 42 protrudes rightward relative to the right lock support rod 32, and the elliptical long axis of the elliptical core block 93 is horizontal, the horizontal position of the left wedge-shaped bolt 41 is staggered with the left bolt fastener 71, and the horizontal position of the right wedge-shaped bolt 42 is staggered with the right bolt fastener 72, as shown in fig. 21.

The working process of the above embodiment is as follows:

in a normal state, the drop-out fuse 8 with the case 1 is mounted on the outdoor column 99 like the transformer 98, as shown in fig. 1, 2, and 3; the lower part 112 of the front box wall of the box body 1 is in a vertical state, the folded plate 17 of the lower part of the front box wall covers the operation notch 18 of the box bottom plate, under the action of the elastic force of the horizontal thrust spring 23, the left side lock bracket rod 21 is at the leftmost end of the horizontal moving track, the right side lock bracket rod 22 is at the rightmost end of the horizontal moving track, the elliptical short axis of the elliptical core block 93 is in a transverse direction, the left wedge-shaped bolt 41 is positioned behind the left bolt fastener 71 of the box body, the right wedge-shaped bolt 42 is positioned behind the right bolt fastener 72 of the box body, the left bolt fastener 72 and the right bolt fastener 72 limit the forward swing of the lower part 112 of the front box wall around the transverse horizontal rotating shaft 113 through the left wedge-shaped bolt 42 and the right wedge-shaped bolt 42, and the box door of the box body is in a closed state, as shown in fig. 1, 5, 6, 7, 8, 9;

when it is necessary to open the door of the box body (for example, the fuse tube 80 of the drop-out fuse 8 falls, as shown in fig. 23), an operator may stand on the ground, and with the help of an externally-fitted long rod with a hook, extend the long rod upwards, so that the hook of the long rod is hooked into the pull ring 91 of the operation knob member, and horizontally rotate the long rod, and drive the pull ring 91, the cylindrical rotating shaft 92, and the elliptical core block 93 to horizontally rotate 90 degrees, so that the elliptical long axis of the elliptical core block 93 becomes horizontal, the left-side lock bracket rod 31 is at the rightmost end of the horizontal movement track, the right-side lock bracket rod 32 is at the leftmost end of the horizontal movement track, as shown in fig. 20, the horizontal position of the left wedge-shaped lock tongue 41 is staggered with respect to the left-tongue fastener 71, the horizontal position of the right wedge-shaped lock tongue 42 is staggered with respect to the right-tongue fastener 72, as shown in fig, the box door (including the lower part 112 of the front box wall and the folded plate 17) swings forwards around the transverse horizontal rotating shaft 113, the box door of the box body is in an opened state, the folded plate 17 at the lower part of the front box wall does not cover the operation notch 18 of the box bottom plate, and an operation channel is formed after the box door is opened, as shown in fig. 22 and 23, so that an operator can stand on the ground and obliquely upwards extend into the box body by using a special operation tool to operate the drop-out fuse; when the externally matched long rod leaves the pull ring, the elliptical core block 93 is restored to a normal state and the elliptical short shaft is restored to a transverse state under the action of the restoring elastic force of the spring.

When the door of the box needs to be closed, an operator stands on the ground, and with the help of an externally matched long rod with a hook, the long rod is extended upwards, so that the hook of the long rod is hooked into the pull ring 91 of the control knob piece, and then pulled downwards, so that the box door swings backwards around the transverse horizontal rotating shaft 113, when the left wedge-shaped bolt 41 contacts the left bolt fastener 71 and the right wedge-shaped bolt 42 contacts the right bolt fastener 72, the left wedge-shaped bolt 41 retracts rightwards temporarily relative to the left lock support rod 31, and the right wedge-shaped bolt 42 retracts leftwards relative to the right lock support rod 32 until the lower part 112 of the front box wall is in a vertical state, the left wedge-shaped bolt 41 is pushed out leftwards relative to the left lock support rod 31 by the elastic force of the left return spring 51, the right wedge-shaped bolt 42 is pushed out rightwards relative to the right lock support rod 32 by the elastic force of the right return spring 52, the left wedge-, the right wedge-shaped bolt 42 is positioned behind the right bolt fastener 72 of the box body again, the door of the box body is in a closed state, the folded plate 17 at the lower part of the front box wall covers the operation notch 18 of the box bottom plate, and the state shown in the figures 1, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16 and 17 is restored.

Claims (2)

1. An outdoor drop-out fuse box body structure comprises a drop-out fuse, and is characterized in that a box body is arranged outside the drop-out fuse, and the box body comprises a box cover, a left box wall, a right box wall, a front box wall, a rear box wall and a box bottom plate; the front box wall is divided into an upper part and a lower part, and the lower part of the front box wall is provided with a transverse horizontal rotating shaft and can swing around the transverse horizontal rotating shaft; the bottom edge of the lower part of the front box wall is also vertically connected with a folded plate; the box bottom plate is also provided with an operation notch, and when the lower part of the front box wall swings to a vertical state, the folded plate at the lower part of the front box wall covers the operation notch of the box bottom plate; an air pressure support rod is arranged between the lower part of the front box wall and the side walls of the left box and the right box, and the elastic direction of the air pressure support rod enables the lower part of the front box wall to swing forwards so that the folded plate of the lower part of the front box wall is staggered with the operation notch of the box bottom plate;

the left wedge-shaped lock bolt is arranged on the right side lock support rod in a transverse sliding manner, the right wedge-shaped lock bolt is arranged on the right side lock support rod in a transverse sliding manner, a left reset spring is further arranged on the left side lock support rod, and the left reset spring applies left thrust to the left wedge-shaped lock bolt; a right reset spring is also arranged on the right lockset support rod and applies right thrust to the right wedge-shaped lock tongue; the left lockset support rod and the right lockset support rod can be respectively arranged on the horizontal folded plate in a transverse sliding way; the control knob piece is composed of a pull ring, a cylindrical rotating shaft and an oval core block; the folding plate is also provided with a circular shaft sleeve, a cylindrical rotating shaft of the operation knob piece is arranged in the circular shaft sleeve, the pull ring is positioned below the circular shaft sleeve and is exposed outside the box body, and the oval core block is positioned above the circular shaft sleeve;

a horizontal thrust spring is arranged between the left lock support rod and the right lock support rod, the horizontal thrust spring applies leftward elasticity to the left lock support rod, and the horizontal thrust spring applies rightward elasticity to the right lock support rod; the left lock support rod is provided with a first hollowed hole, the right lock support rod is provided with a second hollowed hole, and the transverse widths of the first hollowed hole and the second hollowed hole are both larger than the diameter of the elliptic major axis of the elliptic core block; the oval core block penetrates through the first hollowed-out hole and the second hollowed-out hole, the right side hole edge of the first hollowed-out hole contacts the oval core block, and the left side hole edge of the second hollowed-out hole contacts the oval core block;

the box body is also provided with a left fixed lock tongue fastener and a right fixed lock tongue fastener; the position of the left bolt fastener is matched with the position of the left wedge-shaped bolt, and the position of the right bolt fastener is matched with the position of the right wedge-shaped bolt;

when the lower part of the front box wall swings to a vertical state, the left wedge-shaped lock tongue protrudes leftwards relative to the left lock support rod, the right wedge-shaped lock tongue protrudes rightwards relative to the right lock support rod, and the elliptical short axis of the elliptical core block is transverse, the left wedge-shaped lock tongue is positioned behind the left lock tongue fastener, and the right wedge-shaped lock tongue is positioned behind the right lock tongue fastener;

when the current box wall part down swung to vertical state, left wedge spring bolt was held out left for left side tool to lock cradling piece, right wedge spring bolt was held out right for right side tool to lock cradling piece, and the oval major axis of oval pellet was horizontal, the lateral position and the left spring bolt fastener of left wedge spring bolt staggered, the lateral position and the right spring bolt fastener of right wedge spring bolt staggered.

2. An outdoor drop-out fuse box structure according to claim 1, characterized in that: the lower part of the front box wall is provided with a transparent observation window.

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