CN212676846U

CN212676846U - Novel electric interlocking jack box

Info

Publication number: CN212676846U
Application number: CN202021836970.2U
Authority: CN
Inventors: 吴杰; 朱进贤
Original assignee: Zhenjiang Mingchi Electrical Co ltd
Current assignee: Eaton bus (Jiangsu) Co.,Ltd.
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-03-09
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a novel electric interlocking jack box, which comprises a jack box body, an inner interlocking part and an outer interlocking part, wherein the jack box body comprises a shell, a door plate and a plastic shell switch; the internal interlocking part comprises a door plate hook lock arranged on the door plate, a locking electromagnet and a travel switch, wherein the locking electromagnet and the travel switch are arranged on the inner wall of the shell; the utility model discloses in, the door plant could be opened to the switch that has realized the jack box of structure that adopts electrical interlocking when the separating brake state, was in the effect of separating brake state all the time when the door plant was opened, even staff's maloperation forgets when opening the door plant separating brake or the door plant opens the back mistake and closes a floodgate, can both keep the separating brake state automatically, has effectively ensured operating personnel's safety.

Description

Novel electric interlocking jack box

Technical Field

The utility model relates to a generating line jack box field, concretely relates to novel electrical chain jack box.

Background

In the prior art, the intensive bus plugging box usually adopts a mode that a locking pin and a bus cover plate are clamped and pressed, so that the plugging and unplugging of the plugging box are limited. And simple limit interlocking is arranged between the locking leg and the plug box door plate, and the locking leg cannot be opened after the box door is closed. Meanwhile, the box door is controlled by an operating handle of the manual operating mechanism, and the box door can be opened only when the handle is in a brake separating position, so that the aim of preventing the jack box from being plugged during closing is fulfilled. However, with the development of electrification, the jack box tends to be switched on and off by an electric operating mechanism at present, and when the electric operating mechanism is selected, because the electric operating mechanism does not have an external operating handle, the situation that the door can still be opened under the switching-on state can occur, and safety accidents can be caused by plugging and unplugging the jack box under the switching-on condition. Therefore, the common box door interlock cannot be used under the premise of using electric operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of safe plugging of the electric operation jack box, and provides a novel electric interlocking jack box which comprises a jack box body, an inner interlocking part and an outer interlocking part, wherein the jack box body comprises a shell, a door plate and a plastic shell switch;

the internal interlocking part comprises a door plate hook lock arranged on the door plate, a locking electromagnet and a travel switch, wherein the locking electromagnet and the travel switch are arranged on the inner wall of the shell;

the longitudinal edge of the door panel extends outwards and is provided with a locking groove; the external interlocking part comprises two lengthened locking pins which are symmetrically arranged, the lower ends of the lengthened locking pins are matched with the bus cover plate, the middle parts of the lengthened locking pins are rotatably connected with the outer wall of the shell, and the upper ends of the lengthened locking pins are clamped in the locking grooves when the door plate is closed.

Furthermore, L1 of the locking electromagnet is taken from any phase of a pile head on the plastic casing switch and is connected with a normally closed contact inside the plastic casing switch in series, and N2 of the locking electromagnet is connected to a common N line.

Furthermore, the normally open contact of the travel switch is connected in series with a closing loop of the electric operating mechanism of the plastic shell switch, and only when the door plate is closed and the travel switch is pressed, the normally open contact is connected, and the electric operating mechanism can perform closing operation.

Furthermore, after the electric operating mechanism is opened, the stroke rod of the locking electromagnet is attracted and retracted.

Furthermore, the locking electromagnet is arranged on the inner wall of the shell through an emergency unlocking screw rod.

In order to prevent the jack box from being opened in case of an emergency due to a power outage, the emergency unlocking screw preferably penetrates through the housing and can be unscrewed and removed from the outside of the housing. Can pull down the shutting electro-magnet in the jack box outside through the urgent unblock screw rod of unscrewing, the shutting electro-magnet falls naturally after being pulled down, and the door plant latch hook is released promptly, and the door plant can be opened smoothly.

The operation principle is as follows: in the utility model, the locking electromagnet can only perform the suction action when the switch is opened, and is always in the extending state when the switch is closed, thereby blocking the door plate lock hook on the door plate to make the door plate impossible to be opened; when the door plate is closed, the upper ends of the lengthened locking pins are always clamped in the locking grooves of the door plate, so that the locking pins cannot be opened and closed, and the plug box cannot be pulled out.

After the switch is opened, the travel rod of the locking electromagnet is attracted and retracted, the door panel locking hook is released, an operator can open the door panel, the upper end of the lengthened locking pin is separated from the locking groove of the door panel when the door panel is opened, the locking pin can be freely opened and closed, and the plug-in box can be plugged. Meanwhile, because the travel switch is not pressed by the door plate, the normally open contact of the travel switch is disconnected, and the closing loop of the electric operating mechanism can not be conducted any more at the moment, and is always in a switching-off state.

Has the advantages that: in the utility model, the structure of electrical interlocking is adopted to realize that the door plate can be opened only when the switch of the jack box is in the opening state, and the door plate is always in the opening state when opened, so that even if the worker mistakenly operates, forgets to open the door plate when opening the door plate or mistakenly closes the door plate after opening the door plate, the opening state can be automatically kept, and the safety of the operator is effectively ensured;

the utility model discloses it is light reliable, need not to carry out structural modification to original jack box and can realize the security improvement, low cost is suitable for mass production.

Drawings

Fig. 1 is a schematic perspective view of a novel electrical interlocking jack box;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a side view of the novel electrically interlocked jack box with the door panel closed;

FIG. 5 is a side view of the novel electrical interlocking jack box with the door panel open;

FIG. 6 is a schematic diagram of the latching electromagnet;

in the figure: 1. the bus cover plate comprises a bus cover plate body, a shell body, a lengthened locking pin, a door plate, a travel switch, a locking electromagnet, a screw rod for emergency unlocking, a door plate locking hook, a plastic shell switch, a locking groove and a locking groove, wherein the door plate locking hook is 9, 10 and the locking groove are 6.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

As shown in fig. 1 to 6, a novel electrically interlocked plug box comprises a plug box body, an inner interlocking part and an outer interlocking part, wherein the plug box body comprises a shell 2, a door plate 4 and a plastic shell switch 9;

the internal interlocking part comprises a door panel hook lock 8 arranged on the door panel 4, and a locking electromagnet 6 and a travel switch 5 which are arranged on the inner wall of the shell, wherein the locking electromagnet 6 is arranged at a position corresponding to the door panel hook lock 8, the locking electromagnet 6 is arranged on the inner wall of the shell through an emergency unlocking screw 7, and the emergency unlocking screw 7 penetrates out of the shell and can be unscrewed and detached from the outside of the shell; the travel switch 5 is arranged at a position close to the door panel;

the longitudinal edge of the door panel 4 extends outwards and is provided with a locking groove 10; the external interlocking part comprises two lengthened locking pins 3 which are symmetrically arranged, the lower ends of the lengthened locking pins 3 are matched with the bus cover plate 1, the middle parts of the lengthened locking pins are rotatably connected with the outer wall of the shell 2, and the upper ends of the lengthened locking pins are clamped in the locking grooves 10 when the door plate 4 is closed.

In this embodiment, L1 of the latching electromagnet is taken from any phase of the upper stub of the molded case switch and is connected in series with the normally closed contact inside the molded case switch, and N2 of the latching electromagnet is connected to the common N line.

In this embodiment, the normally open contact of the travel switch is connected in series with the closing loop of the electric operating mechanism of the molded case switch, and only when the door panel is closed and the travel switch is pressed, the normally open contact is connected, and the electric operating mechanism can perform closing operation.

In this embodiment, after the electric operating mechanism is opened, the stroke rod of the latching electromagnet is pulled in and retracted.

Based on the above embodiment, in use, the latching electromagnet 6 can perform the suction action only when the switch is opened and closed, and is always in the extending state when the switch is closed, so as to clamp the door latch hook 8 on the door panel 4, so that the door panel 4 cannot be opened; when the door plate 4 is closed, the upper end of the lengthened locking pin 3 is always clamped in the locking groove 10 of the door plate, so that the locking pin cannot be opened and closed, and the plug box cannot be pulled out.

As shown in fig. 5, after the switch is opened, the stroke rod of the latching electromagnet 6 is attracted and retracted, the door latch hook 8 is released, the operator can open the door 4, when the door is opened, the upper end of the lengthened locking pin 3 is separated from the locking groove 10 of the door, the locking pin 3 can be freely opened and closed, and the jack box can be plugged. Meanwhile, as the travel switch 5 is not pressed by the door plate, the normally open contact of the travel switch 5 is disconnected, and the closing loop of the electric operating mechanism can not be conducted any more at the moment, the electric operating mechanism is always in a switching-off state.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel electric interlocking plug box is characterized by comprising a plug box body, an inner interlocking part and an outer interlocking part, wherein the plug box body comprises a shell, a door plate and a plastic shell switch;

2. The novel electrically interlocked plug box of claim 1, wherein the L1 of the latching electromagnet is taken from any one phase of a head of a molded case switch and is connected in series with a normally closed contact inside the molded case switch, and the N2 of the latching electromagnet is connected to a common N wire.

3. The novel electric interlocking plug box according to claim 1, wherein the normally open contact of the travel switch is connected in series with a closing loop of an electric operating mechanism of the plastic shell switch, and only when the door plate is closed and the travel switch is pressed, the normally open contact is connected, and the electric operating mechanism can perform closing operation.

4. The novel electric interlocking plug box of claim 1, wherein the travel bar of the locking electromagnet is pulled back after the electric operating mechanism is opened.

5. The novel electric interlocking plug box of claim 1, wherein the locking electromagnet is mounted on the inner wall of the shell through an emergency unlocking screw.

6. The novel electrical interlocking jack box of claim 5, wherein said emergency release screw extends through said housing and is releasably removable from the exterior of said housing.