CN202094009U - Anti-misoperation interlocking device for switchgear door - Google Patents

Abstract

The utility model relates to a switch cabinet door interlock device for preventing misoperation, which comprises a switch cabinet operation panel, a switch cabinet door, a grounding switch operating shaft, a cooperating rotating drive section, a grounding switch limit sleeve and a reset spring; The inside of the cabinet door is provided with a door bolt, which is characterized in that it also includes a vertical linkage rod located on the inside of the switch cabinet door, a cabinet door unlocking handle located at the bottom of the grounding switch operating shaft and hinged to the outside of the switch cabinet door by a longitudinal hinge shaft, and a set The interlocking hook piece on the inside of the switch cabinet door, the horizontal linkage piece on the inside of the switch cabinet door, and the interlocking piece vertically installed on the switch cabinet body and located below the operating shaft of the grounding switch and above the interlocking hook piece plug. The purpose of the utility model is to provide an interlocking device for preventing misoperation of the switch cabinet door, which can prevent the grounding switch from opening by mistake when the cabinet door is opened, and effectively ensure the safety of personnel for inspection and maintenance.

Description

Anti-misoperation switch cabinet door interlocking device

technical field

The utility model relates to a door interlocking device for preventing misoperation of a switch cabinet.

Background technique

At present, the interlock mechanism on the market can only satisfy the interlock between the grounding switch and the back door of the cabinet, and there is no interlock with the front door of the cabinet. When opening the front door of the cabinet for maintenance, it is difficult to ensure that the equipment is always in a safe grounding state, and the safety of maintenance personnel is easily threatened by misoperation. And in order to further protect the safety of equipment and maintenance personnel, an interlock should also be set between the load switch and the grounding switch to prevent the load switch from closing and opening by mistake.

Contents of the invention

The purpose of the utility model is to provide an interlocking device for preventing misoperation of the switch cabinet door, which can prevent the grounding switch from opening by mistake when the cabinet door is opened, and effectively ensure the safety of personnel for inspection and maintenance.

The purpose of this utility model is achieved through the following technical solutions: a switch cabinet door interlock device for preventing misoperation, which includes a switch cabinet operation panel arranged on the upper part of the switch cabinet body, and an openable switchboard arranged on the lower part of the switch cabinet body. The closed switch cabinet door, the grounding switch operating shaft located in the switch cabinet body and inside the switch cabinet operation panel, coaxially fixed on the outer end of the grounding switch operation shaft and passing through the set on the switch cabinet operation panel The cooperating rotation driving section in the operation hole, the grounding switch limit sleeve set outside the cooperating rotation driving section and capable of axially moving along the cooperating rotation driving section but unable to rotate relative to the cooperating rotation driving section, and the grounding switch limiting sleeve and the return spring between the grounding switch operating shaft; the inside of the switch cabinet door is provided with a door bolt that is controlled by the cabinet door lock to slide up and down so that the switch cabinet door is opened and closed relative to the switch cabinet body. It is characterized in that: It also includes a vertical linkage rod located inside the switch cabinet door and connected between the cabinet door lock and the door bolt, located below the grounding switch operating shaft and hinged to the outside of the switch cabinet door through a longitudinal hinge shaft perpendicular to the switch cabinet door The unlocking handle of the cabinet door, the interlocking hook piece set on the inside of the switch cabinet door and coaxially linked with the longitudinal hinge shaft, set on the inside of the switch cabinet door and connected between the interlocking hook piece and the vertical linkage rod The horizontal linkage piece and the interlock pin vertically installed on the switch cabinet body and located below the operating shaft of the earthing switch and above the interlock hook;

The upper part of the vertical linkage rod is fixed with a limit projection on the side facing the interlocking hook piece, one end of the horizontal linkage piece is movably socketed with the vertical linkage lever through a sleeve hole, and the other end of the horizontal linkage piece The eccentric shaft arranged eccentrically with the longitudinal hinge shaft is hingedly connected with the interlocking hook piece; the lower part of the interlock bolt is fixed with a positioning pin parallel to the longitudinal hinge axis, and the interlocking hook piece is also provided with a positioning pin that can cooperate with the positioning pin The hooking chute for hooking, the radial distance from the notch of the hooking chute to the bottom of the chute and the longitudinal hinge axis gradually decreases; the lower part of the interlocking bolt and the switch cabinet body are provided for interlocking The elastic push piece that keeps the bolt moving upward; the grounding switch limit sleeve is provided with a slot that can be mated with the interlock bolt;

When the horizontal linkage is driven by the interlocking hook to move to the locked position on the side away from the interlocking hook, the interlocking hook rotates until its hooking chute is hooked and connected with the positioning pin, and the horizontal The hole of the linkage piece can only allow the vertical linkage rod to pass through and the limit projection cannot pass through; when the horizontal linkage piece is driven by the interlock hook piece to move to the unlocked position to the side where the interlock hook piece is located, The interlocking hook is rotated until its hooking chute is disengaged from the positioning pin, and the hole of the horizontal linkage allows the vertical linkage rod and the limit projection to pass through at the same time.

The working principle of the utility model is as follows:

When the grounding switch is in the closed state, turn the unlocking handle of the cabinet door to drive the interlocking hook to its hooking chute and disengage from the positioning pin, and the interlocking pin moves upwards to be inserted into the grounding The slot on the switch limit sleeve prevents the operating handle from being inserted into the grounding switch for opening operation. When the interlocking hook is transferred to its hooking chute and the positioning pin is disengaged from the hooking process, it drives the horizontal linkage to move to the unlocking position near the side where the interlocking hook is located, and the sleeve hole of the horizontal linkage allows the vertical Set the linkage rod and the limit bump to pass through at the same time, the door bolt releases the limit, and can freely move up and down under the control of the cabinet door lock. The door of the switch cabinet can be opened to carry out safety inspection and maintenance of the switch equipment, and prevent external personnel from inserting the operating handle into misoperation.

When the maintenance is completed, close the switch cabinet door, the cabinet door lock controls the door bolt to lock the switch cabinet door, and at the same time the limit protrusion withdraws from the hole, the horizontal linkage returns to the state of free movement, and the rotation of the interlocking hook is not restricted ;Turn the unlocking handle of the cabinet door to drive the interlocking hook to its hooking chute and connect with the positioning pin. Move, so that the interlock pin finally retreats from the slot hole of the grounding switch limit sleeve, unlocking the operating shaft of the grounding switch, and the operating handle can be inserted to open the grounding switch. Under the push of the interlocking hook, the horizontal linkage moves to the point where only the vertical linkage rod can pass through but the limit projection cannot pass through, and the door bolt is limited and locked to prevent the switchgear door from being opened after the grounding switch is opened. It is turned on by mistake to ensure the safety of equipment and personal.

The utility model has also carried out following improvement:

The switchgear cabinet body is also provided with a stopper located below the positioning pin and hinged with the switchgear cabinet body through a vertical hinge shaft and a return torsion spring connected between the vertical hinge shaft and the stopper piece. When the door of the switch cabinet is opened, the stopper blocks the positioning pin to prevent the interlocking pin from sliding down naturally due to gravity. When the interlocking hook piece is turned to its hooking chute and the hooking connection process with the positioning pin, the stopper can be pushed aside first, so as to pull down the positioning pin; the interlocking hooking piece is turned to its hooking chute When disengaging from the hooking with the positioning pin, the stopper returns to the bottom of the positioning pin under the action of the reset torsion spring to block the positioning pin.

The top of the longitudinal hinge shaft is provided with a plug-in piece fixedly connected to the switch cabinet door, and the plug-in piece is provided with a pin hole for inserting the lower end of the interlocking bolt, so that the hooking chute of the interlocking hook piece and the When the positioning pin is hooked and connected, the interlocking pin is inserted into the pin hole to further lock the door of the switch cabinet.

Compared with the prior art, the utility model has the advantages of: through the interlocking cooperation of the interlocking device, the grounding switch can be prevented from being opened by mistake when the switch cabinet door is opened, and the safety inspection and maintenance of personnel can be effectively ensured.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of an interlocking device for preventing misoperation of a switch cabinet door of the present invention.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

FIG. 3 is an enlarged schematic diagram of I in FIG. 1 .

FIG. 4 is a schematic diagram of another working state of FIG. 1 .

Fig. 5 is a B-B sectional view of Fig. 4 .

FIG. 6 is an enlarged schematic diagram of II in FIG. 4 .

Fig. 7 is a C-C sectional view of Fig. 4 .

Description of symbols: 1. Switch cabinet operation panel, 2. Grounding switch operating shaft, 3. Cooperating with the rotating drive section, 4. Grounding switch limit sleeve, 5. Return spring, 6. Switch cabinet door, 7. Cabinet door lock, 8. Door bolt, 9. Switch cabinet body, 10. Vertical hinge shaft, 11. Cabinet door unlocking handle, 12. Interlocking hook, 13. Limiting bump, 14. Horizontal linkage, 15. Interlocking Latch, 16, elastic pusher, 17, positioning pin, 18, vertical linkage, 19, hooking chute, 20, sleeve hole, 21, slotted hole, 22, stopper, 23, reset torsion spring, 24, plug connector, 25, latch hole, 26, vertical hinge shaft.

Detailed ways

Below in conjunction with description accompanying drawing and embodiment the utility model content is described in detail:

Fig. 1 to Fig. 7 are schematic diagrams of an embodiment of a misoperation-preventing switch cabinet door interlocking device provided by the present invention. the

A switch cabinet door interlock device for preventing misoperation, which includes a switch cabinet operation panel 1 arranged on the upper part of the switch cabinet body 9, an openable and closed switch cabinet door 6 arranged on the lower part of the switch cabinet body 9, The grounding switch operation shaft 2, which is located in the switch cabinet body 9 and inside the switch cabinet operation panel 1, is coaxially fixed on the outer end of the ground switch operation shaft 2 and passed through the operation set on the switch cabinet operation panel 1. The cooperating rotation driving section 3 in the hole, the grounding switch limit sleeve 4 which is sleeved outside the cooperating rotation driving section 3 and can move axially along the cooperating rotation driving section 3 but cannot rotate relative to the cooperating rotation driving section 3, and is arranged on the grounding The return spring 5 between the switch limit sleeve 4 and the grounding switch operating shaft 2; the inner side of the switch cabinet door 6 is provided with a door lock 7 to control the up and down sliding so that the switch cabinet door 6 is relative to the switch cabinet body 9 The door bolt 8 for opening and closing is characterized in that it also includes a vertical linkage rod 18 located inside the switch cabinet door 6 and connected between the cabinet door lock 7 and the door bolt 8, located below the grounding switch operating shaft 2 and passing through The longitudinal hinge shaft 10 perpendicular to the switch cabinet door 6 is hinged to the cabinet door unlocking handle 11 on the outside of the switch cabinet door 6, and the interlocking hook set on the inside of the switch cabinet door 6 and coaxially linked with the longitudinal hinge shaft 10 12. The horizontal linkage 14 arranged on the inner side of the switch cabinet door 6 and connected between the interlock hook 12 and the vertical linkage rod 18 and vertically installed on the switch cabinet body 9 and located below the grounding switch operating shaft 2 And the interlocking bolt 15 above the interlocking hook piece 12;

The upper part of the vertical linkage rod 18 is fixedly provided with a limit projection 13 on the side facing the interlocking hook 12, and one end of the horizontal linkage member 14 is movably socketed with the vertical linkage rod 18 through the sleeve hole 20, The other end of the transverse linkage 14 is hingedly connected with the eccentric shaft eccentrically arranged with the longitudinal hinge shaft 10 and the interlocking hook 12; The hooking member 12 is also provided with a hooking chute 19 that can be hooked with the positioning pin 17, and the radial distance from the notch of the hooking chute 19 to the groove bottom and the longitudinal hinge shaft 10 gradually decreases; Between the lower part of the lock bolt 15 and the switch cabinet body 9, there is an elastic push piece 16 for keeping the interlock bolt 15 moving upward; Slot 21;

When the horizontal linkage 14 is driven by the interlocking hook 12 and moves to the locked position on the side away from the interlocking hook 12, the interlocking hook 12 rotates until its hooking chute 19 and positioning pin 17 hook connection, and the sleeve hole 20 of the horizontal linkage 14 can only allow the vertical linkage rod 18 to pass through and the limit projection 13 cannot pass through; When the side where the lock hook piece 12 is located moves to the unlocked position, the interlock hook piece 12 rotates until its hooking chute 19 is disengaged from the positioning pin 17, and the sleeve hole 20 of the horizontal linkage piece 14 allows the vertical linkage lever 18 and the limit projection 13 pass through simultaneously.

The switch cabinet body 9 is also provided with a stopper 22 located below the positioning pin 17 and hinged with the switch cabinet body 9 through a vertical hinge shaft 26 and connected between the vertical hinge shaft 26 and the stopper 22 The resetting torsion spring 23 of.

A plug-in piece 24 fixedly connected to the switch cabinet door 6 is provided above the longitudinal hinge shaft 10 , and a plug hole 25 for inserting the lower end of the interlock bolt 15 is provided on the plug-in piece 24 .

In the specific implementation and application, the utility model can also be used in conjunction with the interlock mechanism published by the patent No. 201020262867.1, so that the load switch and the grounding switch are interlocked to prevent the load switch from being closed by mistake when the grounding switch is closed. Damage to equipment and personal life.

Claims (3)

1. fool proof switch cabinet door interlock, it comprises the switch cubicle guidance panel (1) of being located at switch cabinet body (9) top, be located at the able to turn on or off door of switch cabinet (6) of switch cabinet body (9) bottom, be located in the switch cabinet body (9) and be positioned at the inboard earthed switch operating axis (2) of switch cubicle guidance panel (1), coaxial be fixedly arranged on the outer end of earthed switch operating axis (2) and be placed through switch cubicle guidance panel (1) go up cooperation rotating drive section (3) in the set handle hole, be sheathed on cooperate rotating drive section (3) outside and can be along cooperating rotating drive section (3) to move axially but the earthed switch stop collar (4) that can not relative engagement rotating drive section (3) rotates and be located at earthed switch stop collar (4) and earthed switch operating axis (2) between back-moving spring (5); Described door of switch cabinet (6) inboard be provided with by cabinet door lock (7) control up and down slippage so that door of switch cabinet (6) keeper (8) that opens and closes of switch cabinet body (9) relatively it is characterized in that: it comprises that also to be positioned at door of switch cabinet (6) inboard and be connected in the perpendicular gangbar (18) of putting between cabinet door lock (7) and the keeper (8), be positioned at earthed switch operating axis (2) below and be articulated in cabinet door release lever (11) outside the door of switch cabinet (6) by vertical jointed shaft (10) perpendicular to door of switch cabinet (6), be located at door of switch cabinet (6) inboard and with the interlocking clasp joint spare (12) of the coaxial interlock of vertical jointed shaft (10), it is inboard and be connected in interlocking clasp joint spare (12) and go up and be positioned at interlocking latch (15) above earthed switch operating axis (2) below and the interlocking clasp joint spare (12) with perpendicular horizontal STATEMENT OF FEDERALLY SPONSORED (14) and the perpendicular switch cabinet body of putting between the gangbar (18) (9) of being located to be located at door of switch cabinet (6);

Described perpendicular top of putting gangbar (18) is installed with spacing block set (13) at it towards interlocking clasp joint spare (12) one sides, one end of described horizontal STATEMENT OF FEDERALLY SPONSORED (14) is by trepanning (20) and perpendicular gangbar (18) pivot bush unit of putting, and laterally the other end of STATEMENT OF FEDERALLY SPONSORED (14) is by being articulated and connected with eccentric eccentric shaft that is provided with of vertical jointed shaft (10) and interlocking clasp joint spare (12); The bottom of interlocking latch (15) is installed with and vertical parallel alignment pin (17) of jointed shaft (10), also be provided with the clasp joint skewed slot (19) that can cooperate clasp joint with alignment pin (17) on the interlocking clasp joint spare (12), the notch of described clasp joint skewed slot (19) to the radial distance of bottom land with vertical jointed shaft (10) reduces gradually; Be provided with between bottom and the switch cabinet body (9) of interlocking latch (15) and be used for making the keep up elastic top push piece (16) of mobile trend of latch (15) of interlocking; Earthed switch stop collar (4) is provided with and can cooperates the slotted eye (21) of pegging graft with interlocking latch (15);

When described horizontal STATEMENT OF FEDERALLY SPONSORED (14) drives down when deviating from clasp joint spare (12) the place side shifting of interlocking to latched position at interlocking clasp joint spare (12), interlocking clasp joint spare (12) rotates to its clasp joint skewed slot (19) and is connected with alignment pin (17) clasp joint, and the trepanning (20) of horizontal STATEMENT OF FEDERALLY SPONSORED (14) can only allow erect put gangbar (18) by and spacing block set (13) can not pass through; When described horizontal STATEMENT OF FEDERALLY SPONSORED (14) drives down near clasp joint spare (12) the place side shifting of interlocking during to unlocked position at interlocking clasp joint spare (12), interlocking clasp joint spare (12) rotates to its clasp joint skewed slot (19) and alignment pin (17) and breaks away from clasp joint, and laterally the trepanning (20) of STATEMENT OF FEDERALLY SPONSORED (14) can allow and perpendicularly puts gangbar (18) and spacing block set (13) passes through simultaneously.

2. fool proof switch cabinet door interlock according to claim 1 is characterized in that: also be provided with on the described switch cabinet body (9) be positioned at alignment pin (17) below and by the hinged stop part (22) of vertical jointed shaft (26) and switch cabinet body (9) and be connected in vertical jointed shaft (26) and stop part (22) between reduction torsion spring (23).

3. fool proof switch cabinet door interlock according to claim 1, it is characterized in that: described vertical jointed shaft (10) top is provided with the plug connector (24) of fixedlying connected with door of switch cabinet (6), and plug connector (24) is provided with and holds the pin hole (25) that insert interlocking latch (15) bottom.

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