阅读说明：本技术 一种适用减速接地开关的操作机构联锁装置 (Operating mechanism interlocking device suitable for speed reduction grounding switch ) 是由 张文昊 宋倩 王牛柱 谈成 窦锦华 黄成涛 雷启羊 任浩 于 2021-05-28 设计创作，主要内容包括：本发明公开了一种适用减速接地开关的操作机构联锁装置,用于高压开关柜中,包括接地开关结构、前轴、后轴和后门联锁结构,所述接地开关结构设在前轴上,所述前轴通过接地开关伞齿轮机构与后轴连接,所述后门联锁结构设在后轴上。本发明实现了在后门关闭时,才能分闸接地开关,同时只有在接地开关合闸状态才能打开后门,避免了后门处于打开状态时开关柜内带电,保证了中压开关柜操作使用的可靠性及安全性；设置减速机对旋转动作进行减速,并配合丝杠螺母的动作,实现接地开关结构动作时,后门联锁组件能够实现联锁动作。(The invention discloses an operating mechanism interlocking device suitable for a speed reduction grounding switch, which is used in a high-voltage switch cabinet and comprises a grounding switch structure, a front shaft, a rear shaft and a rear door interlocking structure, wherein the grounding switch structure is arranged on the front shaft, the front shaft is connected with the rear shaft through a grounding switch bevel gear mechanism, and the rear door interlocking structure is arranged on the rear shaft. According to the invention, the brake-off grounding switch can be opened only when the rear door is closed, and meanwhile, the rear door can be opened only when the grounding switch is in a closing state, so that the electrification in the switch cabinet is avoided when the rear door is in the opening state, and the reliability and safety of the operation and use of the medium-voltage switch cabinet are ensured; the speed reducer is arranged to reduce the speed of the rotating motion, and the rear door interlocking component can realize interlocking motion when the grounding switch structure moves by matching with the motion of the screw nut.)

1. An operating mechanism interlocking device suitable for a speed reduction grounding switch is used in a high-voltage switch cabinet and is characterized by comprising a grounding switch structure (1), a front shaft (2), a rear shaft (3) and a rear door interlocking structure (4), wherein the grounding switch structure (1) is arranged on the front shaft (2), the front shaft (2) is connected with the rear shaft (3) through a grounding switch bevel gear mechanism (5), and the rear door interlocking structure (4) is arranged on the rear shaft (3);

the rear door interlocking structure (4) comprises a rear door interlocking assembly (41), a first operating rod (42) and a speed reducer (43), the rear door interlocking assembly (41) is arranged on the first operating rod (42), and the first operating rod (42) is connected with the rear shaft (3) through the speed reducer (43).

2. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 1, wherein: the grounding switch structure (1) comprises a screw nut (11), a second operating rod (12), a guide rail interlocking device (13), a locking support (14) and a fixing plate (15), wherein the fixing plate (15) is arranged on the guide rail interlocking device (13), the fixing plate (15) is connected with the grounding switch, the second operating rod (12) is connected onto a screw of the screw nut (11), the locking support (14) is connected onto a nut of the screw nut (11) and locked with the fixing plate (15), and the screw of the screw nut (11) is connected with the front shaft (2).

3. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 2, wherein: the speed reducer (43) is fixed in the cabinet body through a speed reducer support, and the rear end of the rear shaft (3) is fixedly connected with the speed reducer (43); the front shaft (2) is fixed in the cabinet body through a bearing support (21).

4. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 1, wherein: the first operating rod (42), the rear shaft (3), the front shaft (2) and the second operating rod (12) are coaxially arranged.

5. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 1, wherein: the first operating rod (42) is connected with the speed reducer (43) through a coupler.

6. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 2, wherein: the lead screw of the lead screw nut (11) is connected with the front shaft (2) through a shaft sleeve, and the second operating rod (12) is connected with the lead screw of the lead screw nut (11) through the shaft sleeve.

7. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 2, wherein: the grounding switch structure (1) makes telescopic motion, and the rear door interlocking structure (4) makes rotary motion.

8. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 2, wherein: the guide rail interlocking device (13) comprises a square pin guide rail and a guide rail support, and the square pin guide rail is arranged on the guide rail support.

9. The interlocking device of the operating mechanism suitable for the speed reducing grounding switch as claimed in claim 1, wherein: the rear shaft (3) is arranged at the input end of the speed reducer (43), and the first operating rod (42) is connected to the output end of the speed reducer (43).

Technical Field

The invention relates to the technical field of high-low voltage electricity, in particular to an operating mechanism interlocking device suitable for a speed reduction grounding switch.

Background

In the existing high-voltage switch cabinet, an interlocking device needs to be arranged between a rear door of a high-voltage cable chamber and a grounding switch of the switch cabinet, and the following functions are realized through the interlocking device: only when the switch cabinet cable chamber back door is closed, just can make earthing switch separating brake, just can open the back door when earthing switch closes a floodgate simultaneously, and then guarantee operating personnel's safety.

The operation angle of the existing earthing switch operation interlocking device is only suitable for an earthing switch with an operation angle of 90 degrees, and the operation angle required by the bidirectional bevel gear with the speed reducer to operate the earthing switch is up to 1050 degrees, so that the existing earthing switch operation interlocking device cannot realize interlocking with the bidirectional bevel gear with the speed reducer to operate the earthing switch, and cannot be used as a requirement of the bidirectional bevel gear with the speed reducer to operate the earthing switch.

The invention provides an interlocking device of an operating mechanism suitable for a speed reduction grounding switch, which solves the problems.

Disclosure of Invention

The invention provides an operating mechanism interlocking device suitable for a speed reduction grounding switch, which realizes the interlocking of the grounding switch.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an operating mechanism interlocking device suitable for a speed reduction grounding switch is used in a high-voltage switch cabinet and comprises a grounding switch structure, a front shaft, a rear shaft and a rear door interlocking structure, wherein the grounding switch structure is arranged on the front shaft;

the rear door interlocking structure comprises a rear door interlocking assembly, a first operating rod and a speed reducer, wherein the rear door interlocking assembly is arranged on the first operating rod, and the first operating rod is connected with the rear shaft through the speed reducer.

Furthermore, the grounding switch structure comprises a screw nut, a second operating rod, a guide rail interlocking device, a locking support and a fixing plate, wherein the fixing plate is arranged on the guide rail interlocking device and is connected with the grounding switch, the second operating rod is connected to a screw rod of the screw nut, the locking support is connected to the nut of the screw nut and is locked with the fixing plate, and the screw rod of the screw nut is connected with the front shaft.

Furthermore, the speed reducer is fixed in the cabinet body through a speed reducer support, and the rear end of the rear shaft is fixedly connected with the speed reducer; the front shaft is fixed in the cabinet body through a bearing support.

Further, the first operating rod, the rear shaft, the front shaft and the second operating rod are coaxially arranged.

Furthermore, the first operating rod is connected with the speed reducer through a coupler.

Furthermore, a lead screw of the lead screw nut is connected with the front shaft through a shaft sleeve, and the two operating rods are connected with the nut of the lead screw nut through the shaft sleeve.

Furthermore, the grounding switch structure makes telescopic motion, and the rear door interlocking structure makes rotary motion.

Further, the guide rail interlocking device comprises a square pin guide rail and a guide rail support, and the square pin guide rail is arranged on the guide rail support.

Furthermore, the rear shaft is arranged at the input end of the speed reducer, and the operating rod is connected to the output end of the speed reducer.

The invention has the following beneficial effects:

according to the invention, the brake-off grounding switch can be opened only when the rear door is closed, and meanwhile, the rear door can be opened only when the grounding switch is in a closing state, so that the electrification in the switch cabinet is avoided when the rear door is in the opening state, and the reliability and safety of the operation and use of the medium-voltage switch cabinet are ensured;

the speed reducer is arranged to reduce the speed of the rotating motion, and the rear door interlocking component can realize interlocking motion when the grounding switch structure moves by matching with the motion of the screw nut.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the overall structure of the present invention;

FIG. 3 is a schematic diagram of the locking structure of the grounding switch of the present invention;

FIG. 4 is a schematic view of the locking support of the present invention;

fig. 5 is a schematic structural view of the rear door interlock mechanism of the present invention.

Reference numerals: 1-grounding switch structure, 11-screw nut, 12-operating rod II, 13-guide rail interlocking device, 14-locking support, 15-fixing plate, 2-front shaft, 21-bearing support, 3-rear shaft, 4-rear door interlocking mechanism, 41-rear door interlocking component, 42-operating rod I, 43-speed reducer and 5-grounding switch bevel gear mechanism.

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 specification, 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 the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

As shown in fig. 1 and 2, an interlocking device of an operating mechanism suitable for a deceleration grounding switch is used in a high-voltage switch cabinet, and comprises a grounding switch structure 1, a front shaft 2, a rear shaft 3 and a rear door interlocking structure 4, wherein the grounding switch structure 1 is arranged on the front shaft 2, the front shaft 2 is connected with the rear shaft 3 through a grounding switch bevel gear mechanism 5, and the rear door interlocking structure 4 is arranged on the rear shaft 3.

As shown in fig. 1 and 5, the rear door interlock structure 4 includes a rear door interlock assembly 41, a first operating lever 42 and a speed reducer 43, the rear door interlock assembly 41 is disposed on the first operating lever 42, and the first operating lever 42 is connected to the rear axle 3 through the speed reducer 43.

As shown in fig. 1, 3 and 4, the ground switch structure 1 further includes a screw nut 11, a second operating rod 12, a guide rail interlocking device 13, a locking support 14 and a fixing plate 15, the fixing plate 15 is disposed on the guide rail interlocking device 13, the fixing plate 15 is connected to the ground switch, the second operating rod 12 is connected to a lead screw of the screw nut 11, the locking support 14 is connected to a nut of the screw nut 11 and is locked to the fixing plate 15, and the lead screw of the screw nut 11 is connected to the front shaft 2.

When the second operating rod 12 is rotated, the power is divided into two paths through the screw nut 11, wherein one path drives the screw to rotate together and then is transmitted to the front shaft 2; the other path transfers power to the nut through the lead screw nut, and the nut converts the rotation action into axial expansion and contraction, thereby driving the locking support 14 to move forwards.

As shown in fig. 5, further, the speed reducer 43 is fixed in the cabinet through a speed reducer bracket, and the rear end of the rear shaft 3 is fixedly connected with the speed reducer 43; the front axle 2 is fixed in the cabinet body through a bearing support 21.

As shown in fig. 3 and 4, further, the nut of the screw nut 11 is connected in the switch cabinet through a locking support 14, a limiting chute is arranged on the locking support 14, a limiting rod is arranged in the limiting chute, and the limiting rod is fixedly connected in the switch cabinet.

Preferably, the direction of the limiting sliding groove is the same as the axial direction of the second operating rod 12. The nut on the screw nut 11 is limited by the limiting rod to rotate, so that the nut can only move in the front-back direction, and the locking support 14 is driven to move forwards to be in contact with the fixing plate 15.

Further, the first operating rod 42, the rear shaft 3, the front shaft 2 and the second operating rod 12 are coaxially arranged.

Further, the first operating rod 42 is connected with a speed reducer 43 through a coupling.

Further, a lead screw of the lead screw nut 11 is connected with the front shaft 2 through a shaft sleeve, and the second operating rod 12 is connected with the lead screw of the lead screw nut 11 through the shaft sleeve.

Further, the grounding switch structure 1 makes telescopic motion, and the rear door interlocking structure 4 makes rotary motion. The telescopic movement of the earthing switch structure 1 and the simultaneous rotation of the back door interlocking structure 4 are realized by arranging a screw nut.

Further, the guide rail interlocking device 13 includes a square pin guide rail and a guide rail support, and the square pin guide rail is arranged on the guide rail support.

Preferably, the square pin guide rail is vertically arranged, and the fixing plate 15 is movably connected to the guide rail interlocking device 13 and vertically moves along the square pin guide rail.

Further, the rear axle 3 is provided at an input end of a speed reducer 43, and the first operating lever 42 is connected to an output end of the speed reducer 43.

Preferably, the speed reducer 43 is an 1/4 planetary speed reducer. The rotational motion can be decelerated to 1/4 of the original motion to effect locking of the rear door interlock assembly 41.

Preferably, the second operating rod 12 serves as a power input end.

The method comprises the following specific operation steps:

firstly, pressing the fixed plate 15 downwards along the direction of the square pin guide rail;

secondly, the second operating rod 12 is rotated by using an operating handle, so that the second operating rod 12 drives the nut of the screw nut 11 to move forwards along the screw, and the nut moves and simultaneously drives the locking support 14 on the nut to move forwards together, so that the locking support 14 is in contact with the fixing plate 15;

when the second operating rod 12 rotates, the rotating action is transmitted to the front shaft 2 through the screw rod and the shaft sleeve, and the front shaft 2 rotates simultaneously;

fourthly, the rotation of the front shaft 2 is transmitted to the rear shaft 3 through the grounding switch bevel gear mechanism 5;

fifthly, the rotation action of the rear shaft 3 is reduced through the speed reducer 43 and then transmitted to the first operating rod 42, and the first operating rod 42 rotates to drive the rear door interlocking component 41 to act, so that the interlocking of the grounding switch and the rear door is realized.

Furthermore, the matching operation angle of the bidirectional bevel gear operation grounding switch is 1050 degrees, so that the operation handle is rotated 1050 degrees, the second operation rod 12 is rotated 1050 degrees, the lead screw driven by the second operation rod 12 rotates about 2.9 circles, the forward movement stroke of the nut of the lead screw nut is 29mm, the nut moves forward to drive the locking support 14 to move forward to the interlocking position, the fixing plate 15 is pressed, and the fixing plate 15 is contacted with the guide rail interlocking device to realize guide rail interlocking; the 1050-degree rotation angle of the second operating rod 12 is transmitted to the speed reducer 43 at the rear end, and after the speed reducer 43 reduces the speed, the first operating rod 42 drives the rear door interlocking assembly 41 to rotate 262.5 degrees, so that the rear door interlocking is realized.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.