CN111884081A

CN111884081A - Anti-misoperation type maintenance power box

Info

Publication number: CN111884081A
Application number: CN202010672269.XA
Authority: CN
Inventors: 王立
Original assignee: Yangquan Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Current assignee: Yangquan Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2020-11-03

Abstract

The invention relates to a maintenance power box for field operation of a transformer substation, in particular to an anti-misoperation type maintenance power box. Including the interlocker formula two-stage chamber door: the lower edge of the upper cabinet door is pressed on the upper edge of the lower cabinet door, and the sealing is realized by the mutual buckling type. Both can realize waterproof, dustproof, can realize preventing the mistake function again, can realize opening earlier when opening the door after the cabinet door, just can open lower cabinet door, close earlier when closing the door and just can close the mistake mechanical shutting logic of preventing of upper cabinet door of lower cabinet door. The lower part of the side box wall is provided with a wire outlet hole with a rain cover: after the cable connects and gets the power, the cable conductor is fixed and is drawn forth by side tank wall wire hole, can prevent the safety problem that the cable conductor swing brought, can close the maintenance power supply box door after the wiring, can avoid prior art to connect and get the unable chamber door that closes behind the power, easily fall grey, wet, get into the toy, the door is because of the easy damage hinge of external force swing even takes place personnel mistake and touch the scheduling problem of electrocuteeing.

Description

Anti-misoperation type maintenance power box

Technical Field

The invention relates to a maintenance power box for field operation of a transformer substation, in particular to an anti-misoperation type maintenance power box.

Background

When the transformer substation is engaged in field operation, an important task is to receive a maintenance power supply from a maintenance power supply box. The transformer substation generally adopts a mode that a binding post is led out from an electric leakage protection switch in a maintenance power box, and a receiving power supply is directly received from the binding post.

At present, 3-4 groups of 4-pole leakage protection switches (A, B, C, N) are installed in a maintenance power box adopted by a transformer substation, and the leakage protection switches need to be numbered and connected with 12-16-bit wiring posts. The wiring terminal is arranged on the epoxy resin plate at the lower part of the maintenance power box. When wiring, the corresponding leakage protection switch is disconnected, the flexible connector of the spool cable is directly wound on the copper conducting rod of the binding post by hand, and the stud bolt is screwed. The binding posts are in one-to-one correspondence with the leakage protection switches, and one 4-pole leakage protection switch corresponds to the lower 4 binding posts.

The common technical problem that 380/220V overhaul power supplies are accessed from an overhaul power box in the field operation of the transformer substation is as follows:

(1) when people neglect to wire, corresponding leakage protection switches are not pulled open to directly wire on the wiring terminals, and people are easy to get an electric shock.

(2) Pulling the leakage protection switch by mistake may cause the power supply of other operation teams to be cut off by mistake on one hand; on the other hand, the wiring on the wiring terminal is electrified, and the electric shock of a person is easy to occur.

(3) Without the technical measures of fixing the cable, the swinging of the cable may cause the cable crimping position to be stressed, broken and short-circuited or to mistakenly touch electrified equipment to cause accidents.

(4) After the cable receives power, the cable is led out from the box door, the box door of the maintenance power supply cannot be closed, the cable is easy to fall ash and damp, the cable enters small animals, the door is easy to damage a hinge due to external force swing, and even people are easy to touch the hinge by mistake to get an electric shock.

(5) The binding post mark (A, B, C, N) is generally stuck on an epoxy resin plate at the upper part of the binding post by using self-adhesive paper, and the self-adhesive paper is easy to fall off after long-time use.

(6) The interval between the wiring posts is larger for the convenience of wiring, so that the one-to-one correspondence with the vertical arrangement space of the leakage protection switch can not be ensured. In many cases, the number of terminals is required for wiring, for example, No. 2 earth leakage protection switch, and 5, 6, 7, and 8 (counted from left) terminals are used for the corresponding terminals. I.e. in most cases the terminal posts are not spatially directly below the corresponding earth leakage protection switch. Therefore, wrong wiring can be caused by negligence of personnel sometimes, for example, a live wire and a zero wire are respectively connected to two different leakage protection switches, and the leakage protection switches can not operate correctly under the fault condition; the wiring of the wrong wiring terminal on the electrified wiring terminal can cause the danger of electric shock of personnel and the like; the voltage of 380/220V is mistaken, and the instrument is damaged.

Disclosure of Invention

The invention provides an anti-misoperation type maintenance power box for solving the problems in the maintenance operation of the transformer substation at present.

The invention is realized by adopting the following technical scheme: an anti-misoperation type maintenance power box comprises a maintenance power box body, wherein the maintenance power box body is provided with an interlocking type two-stage box door; the interlocking type two-stage box door comprises an upper box door, a main power switch and a leakage protection switch which correspond to the box body; the lower cabinet door corresponds to the wiring post frame and the socket in the box body; the upper end of the lower cabinet door is provided with a lower cabinet door buckling groove, the lower edge of the upper cabinet door is pressed on the lower cabinet door buckling groove, and the lower cabinet door is buckled with each other to realize sealing; an opening door handle and an interlocking type two-stage door operating mechanism are arranged in the maintenance power box body to realize the locking and unlocking of the lower cabinet door;

the door opening handle is fixed on a fixed cross beam in the maintenance power box through a base, a door opening handle pillar is welded on the base, a shaft hole is formed in the upper portion of the door opening handle pillar, a variable-diameter rotating shaft is fixedly installed on the upper portion of the door opening handle pillar, and a rotating mechanism with spring resetting and limiting functions is rotatably sleeved on the portion, extending out of the pin hole of the door opening handle pillar, of the variable-diameter rotating shaft; the rotating mechanism is fixedly provided with a pressure finger plate, a handle plate and a poking plate at intervals in sequence on the peripheral surface surrounding the rotating center of the rotating mechanism;

the interlocking two-stage box door operating mechanism comprises a toggle mechanism, a door opening mechanism and a pull rod;

the toggle mechanism comprises a pair of fixed lantern rings fastened on a fixed cross beam in the maintenance power box, an operating shaft is rotatably supported between the pair of fixed lantern rings, a plurality of pressing fingers which are in one-to-one correspondence with the leakage protection switches are welded on one side of the operating shaft, double pressing fingers are welded on the other side of the operating shaft, semicircular tiles are installed in the maintenance power box body above the double pressing fingers, a pull rod crosspiece is fixed between the double pressing fingers, one end of a pull rod sequentially penetrates through the pull rod crosspiece and the semicircular tiles and is fixedly connected with the pull rod crosspiece, a nut is fixed at one end of the pull rod penetrating through the semicircular tiles to limit the pull rod, and a first pressure spring is sleeved on the portion, between the semicircular tiles and the pull rod crosspiece, of the pull rod;

the door opening mechanism comprises a stretching adjusting piece and a second fixing plate which is arranged on the side wall of the box body close to the opening; the upper end of the stretching adjusting piece is rotatably arranged on the second fixing plate, and the lower end of the stretching adjusting piece is hinged with the other end of the pull rod; the middle part of the stretching adjusting part is connected with a stretching rod, a spring limiting rod with a middle hole is vertically fixed on the second fixing plate, one end of the stretching rod is connected with the stretching adjusting part through a connecting rivet, the other end of the stretching rod penetrates through the middle hole of the spring limiting rod and then is connected with a clamping pipe, one side of the clamping pipe back to the stretching rod is provided with a second elastic clamping piece, one end of the second elastic clamping piece is a knife-shaped large clamping piece, the body part of the second elastic clamping piece is arc-shaped, the other end of the second elastic clamping piece is double-peak and consists of a triangular small clamping piece and a trapezoidal fixing piece, one side of the upper part of the clamping pipe is provided with a clamping groove, the large clamping piece of the second elastic clamping piece extends out of the clamping pipe from the inside, the lower part of the clamping pipe is provided with a fixing groove, the second elastic clamping piece is fixed in the clamping pipe, and the second elastic; the spring adjusting rods respectively penetrate through the upper and lower holes of the spring limiting rod, nuts are respectively arranged at the end parts of the spring adjusting rods, and springs are respectively sleeved between the spring limiting rod and the clamping pipe;

a first reset tube in a horizontal direction is arranged above the second fixing plate, and a first elastic clamping piece which is the same as the second elastic clamping piece is arranged in the middle of the first reset tube; the stretching rod is arranged between the first elastic card big card and the clamping tube of the first reset tube, a short column is welded outwards, the end part of the short column is vertically welded with the reset rod, the other end of the reset rod is vertically welded with a long strip-shaped rod which is arranged above the first reset tube, so that the reset rod moves towards one side of the stretching adjusting piece to enable the first elastic card big card to retract into the first reset tube and pop out to clamp the reset rod, and the clamping tube and the second elastic card big card are also clamped at the position under the driving of the reset rod; the first reset tube is sleeved with a second reset tube towards one side of the clamping tube, a second pressure spring is arranged at the inner bottom of the second reset tube, the end part of the reset tube is pressed to enable the large clamping piece of the first elastic clamping piece to retract into the first reset tube, the reset rod drives the clamping tube and the large clamping piece of the second elastic clamping piece to reset under the action of a spring of the spring adjusting rod, and the second reset tube enables the second reset tube to reset under the action of the second pressure spring inside the second reset tube;

the number of the door opening handles corresponds to the number of the leakage protection switches one by one, the pressure finger plate of each door opening handle corresponds to one pressure finger, and the poking plate of each door opening handle corresponds to one leakage protection switch operating handle cross-linkage;

the door handle penetrates through the lower cabinet door and is linked with a lower cabinet door handle locking plate positioned on the inner side of the lower cabinet door; a reset mandril is also arranged at the inner side of the lower cabinet door; the lower cabinet door handle locking plate is opened and closed through the second elastic clamping piece, and the reset ejector rod corresponds to the second reset tube in position.

Interlocking two-stage door: the lower edge of the upper cabinet door is pressed on the upper edge of the lower cabinet door, and the sealing is realized by the mutual buckling type. Both can realize waterproof, dustproof, can realize preventing the mistake function again, can realize opening earlier when opening the door after the cabinet door, just can open lower cabinet door, close earlier when closing the door and just can close the mistake mechanical shutting logic of preventing of upper cabinet door of lower cabinet door.

According to logic, when a power supply is connected, the upper cabinet door is opened firstly, the corresponding leakage protection switch is checked to be in an off position, the handle plate of the switch handle is pushed, the lower cabinet door is opened, and then wiring is carried out. Because the upper transverse connection position of the operating handle is overlapped when the switch handle poking plate and the leakage protection switch are closed, if the corresponding power supply leakage protection switch is not disconnected, the wedge-shaped surface of the switch handle poking plate can forcibly pull open the leakage protection switch when the switch handle plate is pushed to open the cabinet door, thereby logically avoiding the possibility of electric shock and other accidents caused by electrified power supply connection.

Further, the lower part of the side box wall of the maintenance power box is provided with a wire outlet hole with a rain cover: the rainproof cover is rotatably connected above the wire outlet hole, a hole door is arranged on the wire outlet hole, the hole door is supported by the two-section hole door to rotate, and the hole door is supported by a fixing screw to be fixed; the top of the hole door is provided with a locking hasp for locking the rainproof cover, and the inner side of the hole door is welded with a plurality of cable fixing clamps.

The lower part of the side box wall is provided with a wire outlet hole with a rain cover: after the cable connects and gets the power, the cable conductor is fixed and is drawn forth by side tank wall wire hole, can prevent the safety problem that the cable conductor swing brought, can close the maintenance power supply box door after the wiring, can avoid prior art to connect and get the unable chamber door that closes behind the power, easily fall grey, wet, get into the toy, the door is because of the easy damage hinge of external force swing even takes place personnel mistake and touch the scheduling problem of electrocuteeing.

Furthermore, a wiring column frame in the maintenance power box consists of a base plate, an upright column and a partition baffle; the base plate is made of an epoxy resin plate, four groups of wiring post holes are sequentially formed in the base plate along the long central line of the base plate, and mortise holes are symmetrically formed in two long edges of the base plate between the adjacent wiring post hole groups respectively and a pair of stand columns are installed in a tenon-and-mortise connection mode; a partition baffle is arranged between each pair of upright posts through a mortise and tenon structure;

the binding post is arranged in the binding post mounting hole, and the round surface of a stud bolt of the binding post is marked with ink according to the colors of A-yellow, B-green, C-red and N-blue as the color marks of the binding post; and numbering the upper parts of the epoxy resin plates of each divided 4-bit lug group by using ink, and marking the epoxy resin plates as the lug groups, so that the leakage protection switches and the corresponding lug groups are in one-to-one correspondence.

In the prior art, all binding posts are arranged on one epoxy resin plate, effective division and marking are not realized, and wrong wiring is easy to occur. And designing a wiring column frame of the maintenance power box, and mounting the wiring column frame on a mounting cross arm in the maintenance power box by using screws. The wiring column group arranged on the wiring column frame is divided according to the dividing baffle plate for the corresponding leakage protection switch, and the dividing baffle plate adopts mortise and tenon technology. The divided terminal post groups and the corresponding leakage protection switches are numbered the same, one-to-one correspondence is realized, and each terminal post is marked on the circular surface of the stud bolt according to the phase color, so that the wrong wiring can be effectively avoided.

Drawings

FIG. 1 is a schematic view of a wire outlet hole with a rain cover provided at the lower part of the side tank wall.

Figure 2 is a schematic view of an interlocking two-stage door operating mechanism.

FIG. 3 is a schematic view of a flexible card.

Fig. 4 is a schematic structural diagram of a variable-diameter rotating shaft.

Fig. 5 is a left side schematic view of the door handle.

Fig. 6 is a right side schematic view of the door handle.

Fig. 7 is a detailed schematic view of the door handle rotation mechanism.

Fig. 8 is a schematic view of a terminal.

Figure 9 is a schematic view of the base plate.

Fig. 10 is a schematic view of a column.

FIG. 11 is a schematic view of a split baffle.

Fig. 12 is a schematic view of a terminal post frame dividing baffle installation.

Fig. 13 is a schematic view of a terminal post holder.

Fig. 14 is a schematic structural diagram of the anti-misoperation type maintenance power box.

Fig. 15 is a schematic diagram of field wiring of the anti-misoperation type maintenance power box.

Fig. 16 is a schematic diagram of field application of the anti-misoperation type maintenance power box.

1-maintenance power box side box wall, 2-rain cover, 3-wire outlet hole, 4-cable fixing clamp, 5-hole door, 6-lock hasp, 7-hole door support fixing screw, 8-two-section hole door support, 9-wire outlet hole with rain cover, 10-press finger, 11-operating shaft, 12-pull rod, 13-semicircular tile, 14-screw, 15-first pressure spring, 16-pull rod crosspiece, 17-double pressure finger, 18-first fixing plate 1, 19-fixing lantern ring, 20-adjusting lantern ring, 21-fixing rivet, 22-stretching adjusting piece, 23-connecting rivet, 24-stretching rod, 25-first reset tube, 26-first elastic card, 27-reset rod, 28-second reset tube, 28 a-second pressure spring, 29-second elastic card, 30-clamping tube, 31-spring adjusting rod, 31 a-first spring, 32-second fixing plate, 33-spring limiting rod, 34-an interlocking two-stage door operating mechanism, 35-a large clamping piece, 36-a small clamping piece, 37-a fixed clamping piece, 38-a pin hole, 39-a thick shaft, 40-a reducing rotating shaft, 41-a thin shaft, 42-a limit buckle clamping groove, 43-a finger pressing plate, 44-a rotating mechanism, 45-a handle plate, 46-a shifting plate, 47-a wedge surface, 48-a door opening handle, 49-an inward turning edge, 50-a fixed pin, 51-a door opening handle support column, 52-a foot bolt hole, 53-a door opening handle base, 54-a second spring, 55-a snap spring, 56-a limit buckle, 57-a limit buckle clamp, 58-a first limit angle, 59-a spring positioning column, 60-a second limit angle, 61-a stud bolt, 62-a copper conducting rod, 63-an upper press nut, 64-a lower press nut, 65-a binding wire nut, 66-a binding post, 67-a binding post base plate, 68-a binding post mounting hole, 69-a double trapezoidal mortise hole, 70-an upper rectangular mortise hole, 71-upright post, 72-lower rectangular mortise, 73-double trapezoid mortise, 74-division baffle, 75-upper rectangular mortise, 76-lower rectangular mortise, 77-lug group mark, 78-lug color mark, 79-lug frame, 80-power supply main knife switch, 81-leakage protection switch, 82-leakage protection switch operating handle cross connection, 83-reset ejector rod, 84-lower cabinet door handle lock sheet, 85-lower cabinet door, 86-lower cabinet door buckling groove, 87-upper cabinet door, 88-cable, 89-cable spool.

Detailed Description

The invention is implemented in the following way.

1. Interlocking two-stage door: the inside of the upper cabinet door 87 corresponds to the power supply main disconnecting link 80 and the leakage protection switch 81; the inside of the lower cabinet door 85 corresponds to the terminal rack 79 and the socket. The lower edge of the upper cabinet door 87 is pressed on the lower cabinet door buckling groove 86, and the mutual buckling type realizes sealing. When the power supply is connected, the upper cabinet door can be opened, the power supply leakage protection switch is disconnected, the lower cabinet door is opened, and the cable is fixed through wiring; after the power supply is accessed, the lower cabinet door is closed firstly, then the power supply leakage protection switch is closed, and the mechanical locking logic of the upper cabinet door is closed, so that the electric shock accident of personnel caused by the uninterrupted power supply connection is prevented strictly.

2. The lower door is opened by the door opening handle 48 and the interlocking two-stage door operating mechanism 34.

1) The door opening handle consists of the following parts:

the door opening handle 48 is fixed on a fixed cross beam in the maintenance power box through foundation bolts on a base of the door opening handle. The base is welded with a door opening handle pillar 51 of a cuboid structure, the upper part of the pillar is provided with a shaft hole, the diameter-variable rotating shaft 40 can be installed, and the side surface of the upper part of the pillar is provided with the shaft hole. The reducing rotating shaft 40 is formed by combining a thick shaft 39 and a thin shaft 41, one side of the reducing rotating shaft is the thick shaft 39, the side surface of the end part of the thick shaft 39 is provided with a pin hole 38, and the reducing rotating shaft is fixed in a shaft hole at the upper part of a door opening handle pillar 51 through a fixing pin; the other side is a thin shaft 41 which is axially symmetrically provided with a cuboid limiting buckle groove 42, and the end part of the thin shaft 41 is provided with a clamp spring groove along the circumferential direction. The rotating mechanism has spring resetting and limiting functions and is in an oval basin shape, the side of the pillar 51 is closed by a handle of the door, the other side of the pillar is open, the center of the closed side is provided with a reducing rotating shaft hole, the hole diameter of the shaft hole is matched with a reducing rotating shaft thin shaft, an inward turning edge 49 with a certain height is arranged on the inner side of the shaft hole, the inward turning edge 49 is matched with a second spring 54 in height, the second spring 54 is sleeved on the inward turning edge 49, the thin shaft sequentially penetrates through a second spring and a limiting buckle, the end part of the thin shaft is fixed in a clamp spring groove by a clamp spring, and. The center of the limit buckle 56 is provided with a round hole in which limit buckles 57 are symmetrically arranged, the diameter of the round hole is matched with the thin shaft, the limit buckles 57 and the limit buckle 56 are integrated in the same plane and are rectangular, and the limit buckles 57 and the limit buckle 56 are clamped into the limit buckle clamping grooves 42 which are symmetrically arranged on the thin shaft, so that the reducing rotating shaft can drive the limit buckle 56 to rotate. The left lower part of the outer side of the limit buckle 56 is provided with a second limit angle 60 which is positioned in the same plane, and the first limit angle 58 is vertically bent downwards at the middle position of the limit buckle 56 and then is vertically bent outwards and is parallel to the limit buckle. The second spring 54 is a straight hook torsion spring, two straight hooks of which are clamped at two sides of a spring positioning column 59, and the spring positioning column 59 is welded on the closed surface of the rotating mechanism and is located between the second limiting angle 60 and the first limiting angle 58.

A straight rod is welded on the upward side outside the rotating mechanism, and a rectangular finger pressing plate 43 is horizontally welded at the end part of the straight rod; an upward arc-shaped rod is welded on the other side of the rotating mechanism, which faces upwards, and a rectangular handle plate 45 is welded at the end part of the arc-shaped rod; the external part of the rotating mechanism is welded with a vertical downward straight rod, the end part of the straight rod is vertically welded with a long strip-shaped poking plate 46, the end part of the poking plate 46 is provided with a wedge-shaped surface 47, and the wedge-shaped surface 47 and the position of the leakage protection switch operating handle cross link 82 are overlapped when the leakage protection switch is closed.

2) The interlocking two-stage box door operating mechanism comprises a toggle mechanism, a door opening mechanism and a pull rod.

(1) The toggle mechanism consists of the following parts:

the toggle mechanism is fastened on a fixed cross beam in the maintenance power box through two symmetrically arranged fixed lantern rings 19 through a lower base bolt, and two lantern rings on the upper part of the fixed lantern ring 19 are respectively sleeved on two sides of the operating shaft 11. The welding of 11 left sides of operating axis has 3~4 straight boards, straight board tip level welding rectangle is pressed and is indicated 10 (quantity and position and the earth leakage protection switch one-to-one that overhauls the power supply box and arrange), the welding of operating axis right side is pressed and is indicated 17, two presses and indicate 17 upper portion tip to be circular, the lower part tip welds on operating axis 11, be 60 angles between the upper and lower part, two presses and indicate 17 to arrange respectively in pull rod 12 both sides, two presses and indicate 17 top position installation semicircle tiles 13, semicircle tile 13 one side welds on overhauing the power supply box through first fixed plate 18, the central trompil in tile bottom. One end of the pull rod 12 is provided with a nut and penetrates through a hole at the bottom of the semicircular tile 13. The tie rod crosspieces 16 in the semicircular tile 13 are welded on the tie rod 12 in bilateral symmetry and are in a semicircular column shape. The semicircular surface of the double-pressure-finger-type pull rod is opposite to the round end part of the double-pressure-finger 17, a first pressure spring 15 is sleeved on the pull rod between the pull rod crosspiece 16 and the bottom of the semicircular tile 13, and the first pressure spring 15 can play a resetting and buffering role, so that the operation shaft 11 moves to drive the double-pressure-finger 17 to push the pull rod crosspiece 16 to drive the pull rod 12 to move.

(2) The door opening mechanism consists of the following parts:

the stretching adjusting piece 22 is arc-shaped, the upper part is riveted on the second fixing plate 32 through a fixing rivet, the middle riveting hole is inserted into the end part of the stretching rod 24 (the stretching rod is cylindrical, the circular surface of the end part is axially planed to open a through groove with the width of the stretching adjusting piece) and is connected with the stretching rod 24 through a connecting rivet, the lower part is provided with a hole, and the adjusting sleeve shaft 20 is penetrated in the hole. The adjusting sleeve shaft 20 is cylindrical, one end of the adjusting sleeve shaft is provided with a hole, the other end of the pull rod 12 is inserted into the adjusting sleeve shaft hole, the other end of the adjusting sleeve shaft 20 is provided with threads, nuts are fixed in holes at the lower part of the stretching adjusting piece 22, the fixed length of the pull rod 12 is adjusted, and the nuts are screwed to fix the two parts of the shifting mechanism and the door opening mechanism together. One end of the stretching rod 24 is connected with the stretching adjusting piece 22 through a connecting rivet 23, and the other end of the stretching rod passes through a middle hole of the spring limiting rod 33 and is welded in the middle of the clamping pipe 30. The inside installation second elasticity card 29 of screens pipe 30, the big card 35 of second elasticity card 29 one end is the knife-shape, its body is the arc, the other end is "doublet" and comprises triangle-shaped little card 36 and trapezoidal fixing clip 37, card slot is opened to screens pipe 30 upper portion one side, the big card 35 of second elasticity card 29 stretches out by the card slot from inside, the fixed slot is opened to screens pipe 30 lower part, second elasticity card 29 fixing clip 37 stretches out by the fixed slot from inside, be fixed in screens pipe 30 with second elasticity card 29 in, second elasticity card 29 keeps its elasticity through its arc structure and little card 36 in screens pipe 30, screens pipe 30 is followed the big card cutting part of second elasticity card 29 knife-shape and is upwards atred then big card 35 can be retracted in screens pipe 30, the opposite direction atred then big card 35 does not move the supporting role. A spring adjusting rod 31 is welded on the upper side and the lower side of the other side of the clamping pipe 30 respectively, the spring adjusting rod 31 penetrates through the upper hole and the lower hole of the spring limiting rod 33 respectively, nuts are arranged at the end parts of the spring adjusting rod 31 respectively, a first spring 31a is sleeved between the spring limiting rod 33 and the clamping pipe 30 respectively by the spring adjusting rod 31 in a sleeved mode, and the position of the limiting pipe can be adjusted by adjusting the nut at the end part of the spring adjusting rod 31, namely the position of a large clamping. The lower end of the spring limiting rod 33 is vertically welded on the second fixing plate 32 by a short column, the upper part and the other short column are welded on the second fixing plate 32 in a cross way, the other end of the cross short column is vertically welded with the other short column, the other end of the short column is welded with the lower part of one end of the first reset tube 25, the end of the first reset tube 25 and one short tube are vertically welded on the second fixing plate 32, and the first elastic clamping piece 26 is arranged in the middle of the first reset tube 25 and the clamping tube 30 in the same way that the second elastic clamping piece 29 is arranged. The stretching rod 24 is welded with a short column outside at the position between the large clamping piece 35 of the first elastic clamping piece 26 of the first reset tube 25 and the clamping tube 30, the end part of the short column is vertically welded with the reset rod 27, the other end of the reset rod 27 is vertically welded with a long strip-shaped rod above the first reset tube 25, so that the reset rod 27 moves leftwards to enable the large clamping piece of the first elastic clamping piece 26 to retract into the first reset tube 25 and eject out of the clamping reset rod 27, and the clamping tube 30 and the large clamping piece of the second elastic clamping piece 29 are also clamped at the position under the driving of the reset rod 27. The second reset tube 28 is sleeved on the right side of the first reset tube 25, a second pressure spring 28a is arranged at the bottom in the second reset tube 28, the end part of the second reset tube 28 is pressed to enable the large clamping piece of the first elastic clamping piece 26 to retract into the first reset tube 25, then the reset rod 27 drives the clamping tube 30 and the large clamping piece 35 of the second elastic clamping piece 29 to reset under the spring action of the spring adjusting rod 31, and the second reset tube 28 enables the second reset tube 28 to reset under the action of the second pressure spring 28 a. The first reset tube is provided with a limiting groove, the tail end of the limiting groove is sealed, the second reset tube protrudes downwards to form a pit and is limited in the limiting groove, and the second reset tube is guaranteed not to be completely separated from the first reset tube.

When the cabinet door needs to be opened, a door opening handle plate 45 is pushed upwards, the poking plate 46 is driven to move through the rotating mechanism, if the corresponding leakage protection switch is not disconnected, the wedge-shaped surface 47 at the lower end of the poking plate 46 can force the leakage protection switch operating handle to open the leakage protection switch, and meanwhile, the rotating mechanism drives the pressure finger plate to move to push the pressure finger so as to drive the operating shaft to move. (the handle resets under the second spring 54 effect) the operation axis 11 moves and drives two pressure fingers 17 and makes pull rod 12 pull tensile regulating part 22 to through tensile pole 24 pulling screens pipe 30, screens pipe 30 big card 35 moves backward along with screens pipe 30, and reset rod 27 also moves backward simultaneously and blocks in first reset pipe 25 big card department, makes the mechanism card of opening the door die at this position, makes screens pipe big card lose the screens function to lower cabinet door handle locking plate 84, at this moment rotates lower cabinet door handle and just can open lower cabinet door 85. When the lower cabinet door needs to be closed, when the lower cabinet door moves to the position that the reset ejector rod 83 touches the second reset tube 28 and continues to move towards the door closing direction, the second reset tube 28 moves to enable the large clamping piece of the first reset tube 25 to retract into the first reset tube 25, the clamping effect on the reset rod 27 is lost, at the moment, the reset rod 27 enables the clamping tube 30 to move towards the door direction to reset under the action of the first spring 31a on the spring adjusting rod 31, when the door is closed in place, the door handle can be rotated to enable the door handle locking plate to move upwards, the large clamping piece 35 of the clamping tube 30 is forced to retract into the clamping tube, after the door handle locking plate is in place, the large clamping piece of the clamping tube pops out, the door handle locking plate cannot move downwards, and the lower cabinet door 85 is locked. Meanwhile, the reset rod 27 drives the stretching rod 24 to move, the stretching rod 24 drives the stretching adjusting piece 22 to pull the pull rod 12, and the pull rod 12 also drives the operating shaft 11 to reset through the pull rod crosspiece 16 and the double pressing fingers 17 under the action of the first pressure spring 15.

3. The lower part of the side box wall is provided with a wire outlet hole with a rain cover 2: there is the hole door 5, when the maintenance power supply box does not work a telephone switchboard, the hole door 5 closes, through two hasp locking to rain-proof cover 2 is put down. When needing the wiring, upwards open rain-proof cover 2, open porthole door 5, screw up two festival formula porthole door and support fixed screw 7, make the porthole door fix, the cable conductor penetrates the maintenance power supply box by porthole door 5 and interior wiring, a plurality of cable fixation clamps 4 (elasticity clamping) of porthole door inboard welding draw forth and fixed cable conductor. At this moment, the rain cover can be put down, a certain effect of shielding the hole door can be achieved, after the cable is connected with the power supply, the cable is led out from the side box wall, the maintenance power supply box door can be closed, the problems that in the prior art, the box door cannot be closed after the power supply is connected and taken, ash is easy to fall, damp and enter small animals, the hinge is easy to damage due to external force swinging, even personnel touch the hinge by mistake, electric shock and the like can be avoided.

A wiring column frame for a design and maintenance power box mainly comprises a base plate 67, a column 71 and a partition baffle 74.

The base plate 67 is provided with double trapezoidal mortise holes 69 symmetrically between the 4 th and 5 th wiring column mounting holes and the 8 th and 9 th wiring column mounting holes 68 on the epoxy resin plate. The upright posts 71 are of a cuboid structure, two groups of two upright posts are provided, the upper and lower parts of the two upright posts are respectively provided with a rectangular mortise 70 and a lower rectangular mortise 72, the end part of the lower part of the two upright posts is respectively provided with a double-trapezoid mortise 73, the upright posts 71 are respectively arranged in the double-trapezoid mortise 69 of the base plate through the rectangular mortise, and the contact surfaces of the long square mortise and the rectangular mortise are respectively brushed with glue during installation. Cut apart the baffle and be the cuboid structure, totally two, install respectively in the middle of two sets of stands, cut apart the baffle and correspond stand rectangular mortise hole and rectangular mortise hole position down, both sides are outwards stretched out rectangular mortise 75 and rectangular mortise 76 down respectively, cut apart baffle 74 like this and just can install on the stand of both sides rectangular mortise hole and rectangular mortise hole down through rectangular mortise and down, brush glue respectively at last rectangular mortise and rectangular mortise hole and last rectangular mortise hole and rectangular mortise hole down contact surface at last rectangular mortise and down.

The inspection power box wiring column frame is installed, the wiring column is installed in the wiring column installation hole, the round surface of the wiring column stud is marked with ink according to the colors of A (yellow), B (green), C (red) and N (blue), and wiring according to the colors of the colors can prevent wrong wiring during wiring. And the division of each group of the leakage protection switches between the corresponding binding post groups is realized by using a division baffle, and the division baffle adopts a mortise and tenon process. The upper part of the first group of the 4-bit lug group epoxy resin plate is numbered with ink, namely a No. 1 lug group, the second group is numbered with a No. 2 lug group, and the rest can be done in the same way. The leakage protection switch and the corresponding lug post group can realize one-to-one correspondence, and the wrong connection is prevented.

Claims

1. An anti-misoperation type maintenance power box comprises a maintenance power box body and is characterized in that the maintenance power box body is provided with an interlocking type two-stage box door; the interlocking type two-stage box door comprises an upper box door (87) corresponding to a power supply main disconnecting link (80) and a leakage protection switch (81) in the box body; the lower cabinet door (85) corresponds to the wiring post frame (79) and the socket in the box body; the upper end of the lower cabinet door (85) is provided with a lower cabinet door buckling groove (86), the lower edge of the upper cabinet door (87) is pressed on the lower cabinet door buckling groove (86), and the lower edge is mutually buckled to realize sealing; a door opening handle (48) and an interlocking two-stage door operating mechanism (34) are arranged in the overhaul power supply box body to realize the locking and unlocking of the lower cabinet door (85);

the door opening handle (48) is fixed on a fixed cross beam in the maintenance power box through a base, a door opening handle support column (51) is welded on the base, a shaft hole is formed in the upper portion of the door opening handle support column (51), a variable-diameter rotating shaft (40) is fixedly installed on the shaft hole, and a rotating mechanism (44) with spring resetting and limiting functions is rotatably sleeved on the portion, extending out of the shaft hole, of the door opening handle support column (51), of the variable-diameter rotating shaft (40); the rotating mechanism (44) is fixedly provided with a finger pressing plate (43), a handle plate (45) and a poking plate (46) at intervals in sequence on the peripheral surface surrounding the rotating center of the rotating mechanism;

the interlocking two-stage box door operating mechanism (34) comprises a toggle mechanism, a door opening mechanism and a pull rod (12);

the toggle mechanism comprises a pair of fixed lantern rings (19) fastened on a fixed cross beam in the maintenance power box, an operating shaft (11) is rotatably supported between the pair of fixed lantern rings (19), a plurality of pressure fingers (10) which are in one-to-one correspondence with the leakage protection switches (81) are welded on one side of the operating shaft (11), a double pressure finger (17) is welded on the other side of the operating shaft (11), a semicircular tile (13) is installed at a position above the double pressure finger (17) in the maintenance power box body, a pull rod transverse baffle (16) is fixed between the double pressure fingers (17), one end of the pull rod (12) sequentially penetrates through the pull rod crosspiece (16) and the semicircular tile (13) and is fixedly connected with the pull rod crosspiece (16), a nut is fixed at one end of the pull rod (12) penetrating through the semicircular tile (13) to limit the pull rod (12), and a first pressure spring (15) is sleeved on the portion, between the semicircular tile (13) and the pull rod crosspiece (16), of the pull rod (12);

the door opening mechanism comprises a stretching adjusting piece (22) and a second fixing plate (32) which is arranged on the side wall of the inner part of the box body close to the opening; the upper end of the stretching adjusting piece (22) is rotatably arranged on the second fixing plate (32), and the lower end of the stretching adjusting piece (22) is hinged with the other end of the pull rod (12); the middle part of the stretching adjusting piece (22) is connected with a stretching rod (24), a spring limiting rod (33) with a middle hole is vertically fixed on the second fixing plate (32), one end of the stretching rod (24) is connected with the stretching adjusting piece (22) through a connecting rivet (23), the other end of the stretching rod (24) penetrates through the middle hole of the spring limiting rod (33) and then is connected with a clamping pipe (30), a second elastic clamping piece (29) is arranged on one side of the clamping pipe (30) back to the stretching rod (24), one end of the second elastic clamping piece (29) is a knife-shaped large clamping piece (35) which is arc-shaped, the other end of the second elastic clamping piece (29) is double-humped and consists of a triangular small clamping piece (36) and a trapezoidal fixing clamping piece (37), a clamping groove is formed on one side of the upper part of the clamping pipe (30), the large clamping piece (35) of the second elastic clamping piece (29) extends out of the clamping groove from the inside, the lower part of the clamping pipe (30) is opened, the fixing, fixing the second elastic clamping piece (29) in the clamping pipe (30), wherein the second elastic clamping piece (29) keeps the elasticity thereof through the arc-shaped structure and the small clamping piece (36) in the clamping pipe (30); a spring adjusting rod (31) is respectively welded on the upper side and the lower side of one side, facing the stretching rod (24), of the clamping pipe (30), the spring adjusting rod (31) respectively penetrates through an upper hole and a lower hole of the spring limiting rod (33), nuts are respectively arranged at the end parts of the spring adjusting rod, and a first spring (31 a) is respectively sleeved between the spring limiting rod (33) and the clamping pipe (30) of the spring adjusting rod (31);

a first reset tube (25) in a horizontal direction is arranged above the second fixing plate (32), and a first elastic clamping piece (26) which is the same as a second elastic clamping piece (29) in the clamping tube (30) is arranged in the middle of the first reset tube (25); the stretching rod (24) is arranged between a large first elastic clamping piece (26) clamping piece (35) of the first reset tube (25) and the clamping tube (30), a short column is welded outwards, the end part of the short column is vertically welded with the reset rod (27), the other end of the reset rod (27) is vertically welded with a long strip-shaped rod positioned above the first reset tube (25), so that the reset rod (27) moves towards one side of the stretching adjusting piece (22) to enable the large first elastic clamping piece (26) to retract into the first reset tube (25) and pop out to clamp the reset rod (27), and the clamping tube (30) and the large second elastic clamping piece (29) are also clamped at the position under the driving of the reset rod (27); the first reset tube (25) is sleeved with a second reset tube (28) towards one side of the clamping tube (30), a second pressure spring (28 a) is arranged at the bottom in the second reset tube (28), the end part of the reset tube (28) is pressed to enable the large clamping piece of the first elastic clamping piece (26) to retract into the first reset tube (25), then the reset rod (27) drives the clamping tube (30) and the large clamping piece (35) of the second elastic clamping piece (29) to reset under the spring action of the spring adjusting rod (31), and the second reset tube (28) enables the second reset tube (28) to reset under the action of the second pressure spring (28 a);

the number of the door opening handles (48) corresponds to that of the leakage protection switches (81) one by one, a finger pressing plate (43) of each door opening handle (48) corresponds to one finger pressing (10), and a poking plate (46) of each door opening handle (48) corresponds to one leakage protection switch operating handle cross connection (82);

the door handle is arranged on the outer side of the lower cabinet door (85), penetrates through the lower cabinet door (85) and is linked with a lower cabinet door handle locking plate (84) positioned on the inner side of the lower cabinet door (85); a reset mandril (83) is also arranged at the inner side of the lower cabinet door (85); the lower cabinet door handle locking plate (84) is locked and unlocked through the second elastic clamping piece (29), and the reset ejector rod (83) corresponds to the second reset pipe (28) in position.

2. The anti-misoperation type maintenance power box according to claim 1, wherein the lower part of the side box wall (1) of the maintenance power box is provided with a rain cover outlet hole (9): the rainproof cover (2) is rotatably connected above the wire outlet hole (3), a hole door (5) is arranged on the wire outlet hole (3), the hole door (5) rotates through a two-section hole door support (8), and is fixed through a hole door support fixing screw (7); the top of the hole door (5) is provided with a locking hasp (6) for locking the rainproof cover, and the inner side of the hole door (5) is welded with a plurality of cable fixing clamps.

3. The anti-misoperation type maintenance power box according to claim 1 or 2, wherein the door-opening handle (48) is fixed on a fixed cross beam in the maintenance power box through a foundation bolt on a base of the door-opening handle; the door opening handle support post (51) is of a cuboid structure, a pin hole is formed in the side face of the upper portion of the door opening handle support post, the variable-diameter rotating shaft (40) is formed by combining a thick shaft (39) and a thin shaft (41), the thick shaft (39) is arranged on one side of the variable-diameter rotating shaft, a pin hole (38) is formed in the side face of the end portion of the thick shaft (39), and the variable-diameter rotating shaft is fixed in the pin hole in the upper portion; the other side is a thin shaft (41) which is symmetrically provided with a cuboid limiting buckle groove (42) along the axial direction, and the end part of the thin shaft (41) is provided with a clamp spring groove along the circumferential direction; the rotating mechanism (44) is in an oval basin shape, the side of the strut (51) is closed by a handle of the door, the other side of the strut is open, the center of the closed side is provided with a reducing rotating shaft hole, the hole diameter of the reducing rotating shaft hole is matched with a reducing rotating shaft thin shaft, the inner side of the shaft hole is provided with an inward turning edge (49) with a certain height, the inward turning edge (49) is matched with a second spring (54) in height, the second spring (54) is sleeved on the inward turning edge (49), the thin shaft (41) sequentially penetrates through the second spring (54) and a limiting buckle (56), the end part of the thin shaft is fixed in a clamp spring groove by a clamp spring (55), and the; the center of the limit buckle (56) is provided with a round hole in which limit buckle clips (57) are symmetrically arranged, the diameter of the round hole is matched with the thin shaft (41), the limit buckle clips (57) and the limit buckle (56) are integrated into a whole and are rectangular in the same plane, and the limit buckle clips are clamped into limit buckle clamping grooves (42) symmetrically arranged on the thin shaft (41); a second limiting angle (60) which is positioned in the same plane is arranged at the left lower part of the outer side of the limiting buckle (56), a first limiting angle (58) is arranged below the middle part of the limiting buckle (56), and the first limiting angle (58) is vertically bent downwards at the position below the middle part of the limiting buckle (56) and then is vertically bent outwards to be parallel to the limiting buckle (56); a spring positioning column (59) positioned between the second limiting angle (60) and the first limiting angle (58) is welded on the closed surface of the rotating mechanism; the second spring (54) is a straight hook torsion spring, and two straight hooks of the second spring are clamped at two sides of a spring positioning column (59) welded on the closed surface of the rotating mechanism.

4. The anti-misoperation type maintenance power box according to claim 3, wherein a straight rod is welded on one upward side of the outer circumference of the rotating mechanism (44), and a rectangular pressure finger plate (43) is horizontally welded at the end part of the straight rod; an upward arc-shaped rod is welded on the other side of the outer circumference of the rotating mechanism (44) upwards, and a rectangular handle plate (45) is welded at the end part of the arc-shaped rod; the outer circumference of the rotating mechanism (44) is downwards welded with a vertical downward straight rod, the end part of the straight rod is vertically welded with a long strip-shaped shifting plate (46), the end part of the shifting plate (46) is provided with a wedge-shaped surface (47), and when the wedge-shaped surface (47) and the leakage protection switch (81) are closed, the position of a transverse connection (82) of an operation handle of the leakage protection switch is overlapped.

5. The anti-misoperation type maintenance power box according to claim 1 or 2, wherein the end part of the stretching rod (24) is connected with the stretching rod (24) through a connecting rivet, the lower part of the stretching rod is provided with a hole, and an adjusting sleeve shaft (20) is arranged through the hole; the adjusting sleeve shaft (20) is cylindrical, one end of the adjusting sleeve shaft is provided with a hole, the other end of the pull rod (12) is inserted into the adjusting sleeve shaft hole, the other end of the adjusting sleeve shaft (20) is provided with threads, a nut is fixed in a hole at the lower part of the stretching adjusting piece (22), the fixed length of the pull rod (12) is adjusted, the nut is screwed, and the shifting mechanism and the door opening mechanism are fixed together.

6. The anti-misoperation type maintenance power box according to claim 1 or 2, wherein the wiring column frame (79) in the maintenance power box is composed of a base plate (67), a column (71) and a partition baffle plate (74); the base plate (67) is made of an epoxy resin plate, four groups of wiring column holes (68) are sequentially formed in the base plate (67) along the long central line of the base plate, and mortise holes are symmetrically formed in two long edges of the base plate (67) between adjacent wiring column hole groups respectively and are provided with a pair of stand columns (71) in a tenon-and-mortise connection mode; a partition baffle (74) is arranged between each pair of upright columns (71) through a mortise and tenon structure;

the binding post (66) is arranged in the binding post mounting hole (68), and the round surface of a stud bolt (61) of the binding post is marked with ink according to the colors of A-yellow, B-green, C-red and N-blue as the binding post color mark (78); and numbering the upper parts of the epoxy resin plates of each divided 4-bit lug group by using ink to serve as a lug group mark (77), so that the leakage protection switches (81) and the corresponding lug groups are in one-to-one correspondence.

7. The anti-misoperation type maintenance power box according to claim 6, wherein the upright posts (71) are of a cuboid structure, two groups of two groups are provided, the upper and lower parts of the two groups are respectively provided with an upper rectangular mortise (70) and a lower rectangular mortise (72), the lower end parts of the two groups are respectively provided with a double-trapezoid mortise (73), the upright posts (71) are respectively installed in the double-trapezoid mortise of the base plate through the rectangular mortise, and the contact surfaces of the long square mortise and the rectangular mortise are respectively brushed with glue during installation; cut apart baffle (74) and be the cuboid structure, totally two, install respectively in the middle of two sets of stands (71), cut apart baffle (74) and correspond stand upper rectangular mortise hole (70) and lower rectangular mortise hole (72) position, both sides are outside respectively and are stretched out upper rectangular mortise hole (75) and lower rectangular mortise hole (76), cut apart baffle (74) like this and just can install in both sides stand upper rectangular mortise hole (70) and lower rectangular mortise hole (72) through upper rectangular mortise hole (75) and lower rectangular mortise hole (76), brush glue respectively at upper rectangular mortise hole (75) and lower rectangular mortise hole (76) and upper rectangular mortise hole (70) and lower rectangular mortise hole (72) contact surface.