阅读说明：本技术 一种铠装移开式金属封闭开关设备电缆室门连锁机构 (Armored movable metal-enclosed switchgear cable chamber door interlocking mechanism ) 是由 马立军 徐志 宋方龙 冯佳晨 郭玉龙 贺志娟 杨进军 高进 于 2020-07-02 设计创作，主要内容包括：本发明公开一种铠装移开式金属封闭开关设备电缆室门连锁机构,涉及开关设备技术领域,包括柜体、接地开关操作轴、电缆室门、连锁机构和推进机构,接地开关操作轴和连锁机构均设置于柜体内腔,电缆室门铰接于柜体,推进机构安装于电缆室门上；连锁机构能够在电缆室门处于开启状态时限制接地开关操作轴转动,使接地刀开关保持合闸状态；推进机构能够解除连锁机构对接地开关操作轴的限制,使接地刀开关进行分、合闸状态的转换。本发明可实现高压开关设备电缆室门在未关闭的状态下不能进行送电投用功能,防止作业人员误入带电间隔等现象,有利于提高整个产品的可靠性和安全系数,实用性强。(The invention discloses an armored movable metal-enclosed switchgear cable chamber door interlocking mechanism, which relates to the technical field of switchgear and comprises a cabinet body, a grounding switch operating shaft, a cable chamber door, an interlocking mechanism and a pushing mechanism, wherein the grounding switch operating shaft and the interlocking mechanism are both arranged in the inner cavity of the cabinet body; the interlocking mechanism can limit the rotation of the grounding switch operating shaft when the cable chamber door is in an open state, so that the grounding knife switch keeps a closing state; the pushing mechanism can release the limitation of the interlocking mechanism on the operation shaft of the grounding switch, so that the switch-on and switch-off states of the grounding knife switch can be switched. The invention can realize that the cable chamber door of the high-voltage switch equipment can not carry out power transmission and service functions under the state of not closing, prevents the phenomena of mistaken entering of operators into an electrified interval and the like, is favorable for improving the reliability and safety factor of the whole product, and has strong practicability.)

1. The utility model provides an armor withdraws formula metal-enclosed switchgear cable chamber door interlocking gear which characterized in that: the grounding switch cabinet comprises a cabinet body, a grounding switch operating shaft, a cable chamber door, an interlocking mechanism and a propelling mechanism, wherein the grounding switch operating shaft and the interlocking mechanism are both arranged in an inner cavity of the cabinet body; the interlocking mechanism can limit the rotation of the grounding switch operating shaft when the cable chamber door is in an open state, so that the grounding knife switch keeps a closing state; the pushing mechanism can release the limitation of the interlocking mechanism on the grounding switch operating shaft, so that the grounding knife switch can be switched between an opening state and a closing state.

2. The armored removable metal enclosed switchgear cable chamber door interlocking mechanism of claim 1, wherein: the interlocking mechanism comprises a U-shaped bent plate, an L-shaped support, an unlocking shaft and a return spring; one side of the L-shaped support is fixed at the opening end of the U-shaped bent plate, and the other side of the L-shaped support is fixed at the cabinet body; the unlocking shaft is arranged in the inner cavity of the U-shaped bent plate and can penetrate through the L-shaped support; the tail end of the unlocking shaft is connected with a guide shaft, the tail end of the guide shaft is provided with a check ring, and the check ring is positioned on the outer side of the U-shaped bent plate; the guide shaft is sleeved with the reset spring, and two ends of the reset spring are respectively abutted to the U-shaped bent plate and the tail end of the unlocking shaft.

3. The armored removable metal enclosed switchgear cable chamber door interlocking mechanism of claim 1, wherein: the pushing mechanism comprises a pushing column, an interlocking block and an interlocking cover; the interlocking block is connected to the head end of the push column, a groove is formed in the tail end of the push column, and after the push column is pushed in place, the groove can enable the grounding switch operating shaft to penetrate through the groove, so that the limitation of the interlocking mechanism on the grounding switch operating shaft is removed; the interlocking cover is clamped with the interlocking block through a shaft; the interlocking block is fixed to the cable chamber door.

4. The armored removable metal enclosed switchgear cable chamber door interlocking mechanism of claim 1 or 3, wherein: and the grounding switch operating shaft is provided with a limiting sleeve.

5. The armored removable metal enclosed switchgear cable chamber door interlock according to claim 3, wherein: the head end of the grounding switch operating shaft is provided with a sector plate, and the sector plate can be clamped in the groove.

6. The armored removable metal enclosed switchgear cable chamber door interlock according to claim 3, wherein: the interlocking block is connected with the push column through an unlocking bolt, and when the cable chamber door needs to be opened emergently, the interlocking block is separated from the push column by unscrewing the unlocking bolt.

7. The armored removable metal enclosed switchgear cable chamber door interlock according to claim 3, wherein: the groove is arranged on the side wall of the tail end of the push column.

8. The armored removable metal enclosed switchgear cable chamber door interlock according to claim 3, wherein: the interlocking block is embedded and installed on the outer surface of the cable chamber door.

Technical Field

The invention relates to the technical field of switch equipment, in particular to a cable chamber door interlocking mechanism of an armored movable metal closed switch equipment.

Background

Among the present power system, the cable chamber door of armor formula of removing metal-enclosed switchgear all is equipped with simple and easy chain function of opening the door, prevents promptly that operating personnel from can not being opened at the cable chamber door of equipment line load side live-line time high tension switchgear, prevents that operating personnel from missing the electrified interval. However, after the cable chamber door is opened, no corresponding interlocking mechanism is arranged to restrict the power transmission process of the high-voltage equipment. The cable chamber door high tension switchgear still can carry out the power transmission and put into use the function under the not closed condition, does not get rid of there is the live working condition, can lead to operation maintenance personal to miss the live interval this moment, has a great deal of potential safety hazard, and the light person damages electrical equipment, and the heavy person takes place the electric shock accident and even makes operation maintenance personal casualty. Therefore, how to improve the safe use coefficient of the cable chamber door of the high-voltage switchgear in an unclosed state is a problem to be solved urgently.

Disclosure of Invention

The invention aims to provide an armored movable metal closed switch equipment cable chamber door interlocking mechanism which is simple and reasonable in structure and convenient to install and disassemble, so that a high-voltage switch equipment cable chamber door cannot be powered on and put into use in an unclosed state, the phenomena that operators mistakenly enter a live interval and the like are prevented, the reliability and the safety coefficient of the whole product are improved, and the problems in the prior art can be effectively solved.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides an armored movable metal closed switch equipment cable chamber door interlocking mechanism which comprises a cabinet body, a grounding switch operating shaft, a cable chamber door, an interlocking mechanism and a pushing mechanism, wherein the grounding switch operating shaft and the interlocking mechanism are both arranged in an inner cavity of the cabinet body; the interlocking mechanism can limit the rotation of the grounding switch operating shaft when the cable chamber door is in an open state, so that the grounding knife switch keeps a closing state; the pushing mechanism can release the limitation of the interlocking mechanism on the grounding switch operating shaft, so that the grounding knife switch can be switched between an opening state and a closing state.

Optionally, the interlocking mechanism includes a U-shaped bent plate, an L-shaped support, an unlocking shaft, and a return spring; one side of the L-shaped support is fixed at the opening end of the U-shaped bent plate, and the other side of the L-shaped support is fixed at the cabinet body; the unlocking shaft is arranged in the inner cavity of the U-shaped bent plate and can penetrate through the L-shaped support; the tail end of the unlocking shaft is connected with a guide shaft, the tail end of the guide shaft is provided with a check ring, and the check ring is positioned on the outer side of the U-shaped bent plate; the guide shaft is sleeved with the reset spring, and two ends of the reset spring are respectively abutted to the U-shaped bent plate and the tail end of the unlocking shaft.

Optionally, the pushing mechanism comprises a pushing post, an interlocking block and an interlocking cover; the interlocking block is connected to the head end of the push column, a groove is formed in the tail end of the push column, and after the push column is pushed in place, the groove can enable the grounding switch operating shaft to penetrate through the groove, so that the limitation of the interlocking mechanism on the grounding switch operating shaft is removed; the interlocking cover is clamped with the interlocking block through a shaft; the interlocking block is fixed to the cable chamber door.

Optionally, a limit sleeve is arranged on the grounding switch operating shaft.

Optionally, a sector plate is arranged at the head end of the grounding switch operating shaft, and the sector plate can be clamped in the groove.

Optionally, the interlocking block is connected to the push post through an unlocking bolt, and when the cable chamber door needs to be opened urgently, the interlocking block is disengaged from the push post by unscrewing the unlocking bolt.

Optionally, the groove is disposed on a side wall of the end of the push column.

Optionally, the interlocking block is embedded and mounted on the outer surface of the cable chamber door.

Compared with the prior art, the invention has the following technical effects:

the armored movable metal closed switch equipment cable chamber door interlocking mechanism provided by the invention can realize the function that the cable chamber door of the high-voltage switch equipment cannot be used for power transmission in the unclosed state, prevent the phenomena of mistaken entering of an electrified interval and the like by an operator, and is beneficial to improving the reliability and safety factor of the whole product. Meanwhile, the interlocking mechanism is fastened to the cabinet body and the cable chamber door through bolts, is independent of a switch device, is convenient to install and detach, is stable in interlocking, high in interchangeability, easy to maintain and high in practicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an assembly view of the door-open state of the interlocking mechanism of the cable chamber of the armored movable metal-enclosed switchgear;

FIG. 2 is a schematic structural diagram of the armored movable metal-enclosed switchgear cable chamber door interlocking mechanism according to the present invention in a closed state;

FIG. 3 is a schematic view of the interlocking mechanism of the present invention;

FIG. 4 is a schematic structural view showing a closing state of an interlocking cover in the propulsion mechanism of the present invention;

FIG. 5 is a schematic view of the structure of the interlocking cover in the pushing mechanism according to the present invention;

FIG. 6 is a schematic structural view of an operating shaft of the earthing switch according to the present invention;

wherein the reference numerals are: 1-an earthing switch operating shaft; 2, fixing a bolt I; 3-a retainer ring; 4-a return spring; 5-unlocking the shaft; 6, fixing a bolt II; 7-a limit pin; 8-a limiting sleeve; 9-U-shaped bent plate; a 10-L shaped support; 11-cable chamber door; 12-a cabinet body; 13 shafts; 14-a first via hole; 15-an interlocking cover; 16-an interlocking block; 17-a push column; 18-sector plates; 19-fixing a bolt III; 20-grooves; 21-a second via hole; 22-Via three; 23-via hole four; 24-a fixation hole; 25-unlocking the bolt; 26-guide shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.