WO2021073088A1

WO2021073088A1 - Transmission device for three-station mechanism of high-voltage cabinet and transmission method therefor

Info

Publication number: WO2021073088A1
Application number: PCT/CN2020/091631
Authority: WO
Inventors: 麦建国; 陈锦伦; 周汉光
Original assignee: 赫兹曼电力（广东）有限公司
Priority date: 2019-10-17
Filing date: 2020-05-21
Publication date: 2021-04-22
Also published as: CN110676108A

Abstract

Disclosed in the present invention is a transmission device for a three-station mechanism of a high-voltage cabinet, comprising a connecting shaft; the connecting shaft is an aluminium alloy profile formed by extrusion, has a through-core inside, and is connected to a torsion rod spring by means of the through-core, a front end of the connecting shaft is connected to an isolated/grounded three-station mechanism, and a rear end thereof is connected to a torsion rod spring fixing element; the torsion rod spring penetrates through the through-core of the connecting shaft, and has a front end connected to the isolated/grounded three-station mechanism, and a rear end embedded in the torsion rod spring fixing element. In the present invention, by fixing the connecting shaft and keeping same stationary, the front end of the torsion rod spring rotates and the rear end thereof keeps stationary, thereby deforming and storing energy, and when the connecting shaft is released, the torsion rod spring restores from being deformed and releases energy, thereby driving the connecting shaft to move, achieving the transmission of a three-station mechanism of a high-voltage cabinet; in addition, the transmission force is applied at the front end and the tail end of the connecting shaft, thus improving the switch knife synchronism of the three-station mechanism of the high-voltage cabinet, enabling the three-station mechanism of the high-voltage cabinet to have a better switch-on and switch-off performance.

Description

Transmission device and transmission method of three-station mechanism of high-voltage cabinet

Technical field

The invention relates to a transmission device of a three-station mechanism of a high-voltage cabinet, which realizes the transmission function through a torsion bar spring and a through-core flower-shaped aluminum alloy shaft transmission and a transmission method thereof.

Background technique

The transmission shaft of the existing isolation/grounding three-station transmission device is mostly a solid transmission shaft, and its booster spring is placed in the isolation/grounding three-station mechanism. The specific structure is that one end of the transmission shaft is connected to the isolation/grounding three-station mechanism. On the output interface, if the ABC three-phase is arranged vertically, the C-phase isolation knife is closest to the isolation/grounding three-station mechanism, and the A-phase isolation knife is the farthest away from the isolation/grounding three-station mechanism; in the isolation/grounding three When the switch of the station mechanism is opened and closed, it is easy to cause the three phases to be different in time, resulting in inconsistencies and irregularities when the three phases are in the closed position. In addition, most of the existing isolation/grounding three-station mechanisms use cylindrical spiral compression springs. Special tooling is required for installation, and the mechanism structure is too large.

For example, Chinese Patent Document CN 208208641 U published a three-position isolating switch on December 7, 2018, the drive shaft of which is a solid shaft and no booster spring is placed in it.

Another example is the Chinese Patent Document CN 202957163 U published a three-position operating mechanism on May 29, 2013, and its booster spring is placed in the operating mechanism.

None of the above structures can meet the requirements of production and processing. Therefore, further improvements are necessary.

Summary of the invention

The purpose of the present invention is to provide a high-voltage cabinet three-station mechanism transmission with simple and reasonable structure, excellent performance, quick disassembly and assembly, convenient use, compact connection between components, low manufacturing cost, easy production, easy realization, and safe and reliable The device and its transmission method overcome the shortcomings in the prior art.

A transmission device for a three-station mechanism of a high-voltage cabinet designed for this purpose, including a connecting shaft, is characterized in that: the connecting shaft is an aluminum alloy profile formed by extrusion, and its internal core is connected with a twisted core through the core. Rod spring, the front end of the connecting shaft is connected with an isolation/grounding three-station mechanism, and the rear end is connected with a torsion bar spring fixing member; the torsion bar spring is penetrated through the through core of the connecting shaft, and its front end is isolated from The grounding three-station mechanism is connected, and the rear end is inlaid on the torsion bar spring fixing piece.

The outer contour of the connecting shaft is quincunx; the cross section of the torsion bar spring is a square rectangular rod or tube, or an elliptical rod or tube, which penetrates the through-core hole inside the connecting shaft and penetrates the entire strip Connect the shaft.

The torsion bar spring fixing piece is provided with a square rectangular groove or an elliptical groove; the rear end of the torsion bar spring is inlaid on the square rectangular groove or the elliptical groove of the torsion bar spring fixing piece.

The torsion bar spring fixing part is also provided with a limit plate, which is fixedly arranged on the torsion bar spring fixing part by fasteners, or clamped, or welded, and is covered in a square rectangular groove or an elliptical groove on.

The connecting shaft is provided with a fixed spacer for fixing its axial position, and the fixed spacer is sleeved on the connecting shaft.

A plurality of shaft supports are arranged on the connecting shaft, and the plurality of shaft supports are used to support the connecting shaft, and form a certain distance between them, and are respectively sleeved on the connecting shaft.

The connecting shaft is provided with a plurality of turning arms, and the plurality of turning arms are used to drive the switch switch of the isolation/grounding three-station mechanism, and form a certain distance between them, and are respectively sleeved on the connecting shaft.

A transmission method for a three-station mechanism of a high-voltage cabinet, which is characterized in that it includes the above-mentioned transmission device, and the transmission method is: when the main shaft of the isolation/grounding three-station mechanism rotates, it will drive the front end of the torsion bar spring to rotate and lock When the connecting shaft is not moved, the rear end of the torsion bar spring is still due to the action of the torsion bar spring fixing member, the torsion bar spring will be twisted and begin to store energy at the same time; when the torsion bar spring is twisted and deformed, and the energy storage reaches a certain level At this time, the isolation/grounding three-station mechanism will release the flower-shaped connecting shaft, and the torsion bar spring will release energy by restoring deformation, thereby driving the connecting shaft to move.

Through the improvement of the above structure, the present invention utilizes the locking of the connecting shaft to be stationary, the front end of the torsion bar spring rotates, and the rear end is stationary, thereby twisting and deforming and storing energy. When the connecting shaft is released, the torsion bar spring will By restoring the deformation and releasing the energy, the connecting shaft is driven to move to realize the transmission of the three-station mechanism of the high-voltage cabinet, making the structure of the three-station mechanism of the high-voltage cabinet simpler and more compact, with lower production costs, and due to the transmission force on the connecting shaft The front and end of the high-voltage cabinet can improve the synchronism of the switch of the three-station mechanism of the high-voltage cabinet, and make the switch performance of the three-station mechanism of the high-voltage cabinet better.

In summary, it has the characteristics of simple and reasonable structure, excellent performance, quick disassembly and assembly, convenient use, compact connection between components, low manufacturing cost, easy production, easy realization, safety and reliability, and strong practicability.

Description of the drawings

FIG. 1 is a schematic diagram of the three-dimensional assembly structure of the first embodiment of the present invention.

Fig. 2 is a schematic diagram of the front assembly structure of the first embodiment of the present invention.

Fig. 3 is a schematic view of the structure taken along line A-A in Fig. 2.

4 is a schematic diagram of a side view of the assembly structure of the first embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the drawings and embodiments.

Refer to Figure 1 to Figure 4, the transmission device of the three-station mechanism of the high-voltage cabinet includes a connecting shaft 2. The connecting shaft 2 is an aluminum alloy profile formed by extrusion, and its internal core is connected with a torsion bar through the core Spring 1, the front end of the connecting shaft 2 is connected with an isolation/grounding three-station mechanism 10, and the rear end is connected with a torsion bar spring fixing member 6; the torsion bar spring 1 is penetrated through the through core of the connecting shaft 2, and The front end is connected with the isolation/grounding three-station mechanism 10, and the rear end is inlaid on the torsion bar spring fixing member 6.

The outer contour of the connecting shaft 2 is quincunx; the cross section of the torsion bar spring 1 is a square rectangular rod or tube, or an elliptical rod or tube, which penetrates through the core hole inside the connecting shaft 2 and runs through The connecting shaft 2.

The torsion bar spring fixing member 6 is provided with a square rectangular groove or an elliptical groove; the rear end of the torsion bar spring 1 is embedded in the square rectangular groove or the elliptical groove of the torsion bar spring fixing member 6.

The torsion bar spring fixing part 6 is also provided with a limit plate 8. The limit plate 8 is fixedly arranged on the torsion bar spring fixing part 6 by a fastener 7, or clamped, or welded, and is covered in a square rectangular groove or On the oval groove.

Specifically, the fastener 7 is a hexagon socket screw, and the limit plate 8 is fixedly installed on the torsion bar spring fixing member 6 through the hexagon socket screw 7 and covers the rectangular or elliptical groove to prevent the torsion bar spring 1 Extend the torsion bar spring fixing member 6.

The connecting shaft 2 is provided with a fixed spacer 5 for fixing its axial position, and the fixed spacer 5 is sleeved on the connecting shaft 2.

A number of shaft supports 4 are provided on the connecting shaft 2, and the plurality of shaft supports 4 are used to support the connecting shaft 2 and form a certain distance between them, and they are respectively sleeved on the connecting shaft 2.

The connecting shaft 2 is provided with several turning arms 3, and the several turning arms 3 are used to drive the opening and closing switches of the isolation/grounding three-station mechanism 10, and form a certain distance between them, and they are respectively sleeved on the connecting shaft 2. on.

The above-mentioned transmission method is: when the main shaft of the isolation/grounding three-station mechanism 10 rotates, it will drive the front end of the torsion bar spring 1 to rotate and lock the connecting shaft 2 from moving. The rear end of the torsion bar spring 1 is because of the torsion bar spring fixing part. When the function of 6 is still, the torsion bar spring 1 will twist and change and begin to store energy at the same time; when the torsion bar spring 1 is twisted and deformed and the energy storage reaches a certain level, the isolation/grounding three-station mechanism 10 will release the flower shape Connecting the shaft 2, at this time, the torsion bar spring 1 will be released by restoring deformation, thereby driving the connecting shaft 2 to move.

The attached drawings are only for illustrative purposes, they are only schematic diagrams, not physical drawings, and cannot be understood as a limitation of this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or The reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures in the drawings and their descriptions may be omitted.

Moreover, the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left" and " The orientation or positional relationship indicated by “right”, “vertical”, “horizontal”, “horizontal”, “vertical”, “top”, “bottom”, “inner”, “outer”, etc. are all based on the orientation shown in the drawings Or the positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the drawings are only It is used for illustrative purposes and cannot be understood as a limitation of this patent.

Claims

A transmission device for a three-station mechanism of a high-voltage cabinet, comprising a connecting shaft (2), characterized in that: the connecting shaft (2) is an aluminum alloy profile formed by extrusion, and its inner core is connected with The torsion bar spring (1), the front end of the connecting shaft (2) is connected with an isolation/grounding three-station mechanism (10), and the rear end is connected with a torsion bar spring fixing member (6); the torsion bar spring (1) is through-type It is arranged on the through core of the connecting shaft (2), and its front end is connected with the isolation/grounding three-station mechanism (10), and the rear end is inlaid on the torsion bar spring fixing piece (6).
The transmission device of the three-station mechanism of the high-voltage cabinet according to claim 1, characterized in that: the outer contour of the connecting shaft (2) is quincunx; the cross section of the torsion bar spring (1) is a square rectangular rod or tube , Or an elliptical rod or tube, which penetrates the through core hole inside the connecting shaft (2) and penetrates the entire connecting shaft (2).
The transmission device of the three-station mechanism of the high-voltage cabinet according to claim 2, characterized in that: the torsion bar spring fixing member (6) is provided with a square rectangular groove or an elliptical groove; the torsion bar spring (1) The rear end is inlaid on the square rectangular groove or the elliptical groove of the torsion bar spring fixing member (6).
The transmission device of the three-station mechanism of the high-voltage cabinet according to claim 3, characterized in that: the torsion bar spring fixing member (6) is also provided with a limit plate (8), and the limit plate (8) is fastened The piece (7) is fixedly arranged on the torsion bar spring fixing piece (6) by either clamping or welding, and is covered on a square rectangular groove or an elliptical groove.
The transmission device of the three-station mechanism of the high-voltage cabinet according to any one of claims 1-4, characterized in that: the connecting shaft (2) is provided with a fixed spacer (5) for fixing its axial position, and The fixed spacer (5) is sleeved on the connecting shaft (2).
The transmission device of the three-station mechanism of the high-voltage cabinet according to any one of claims 1-4, characterized in that: the connecting shaft (2) is provided with a plurality of shaft supports (4), and a plurality of shaft supports ( 4) It is used to support the connecting shaft (2) and form a certain distance between them, and they are respectively sleeved on the connecting shaft (2).
The transmission device of the three-station mechanism of the high-voltage cabinet according to any one of claims 1-4, characterized in that: the connecting shaft (2) is provided with a plurality of turning arms (3), and a plurality of turning arms (3) are provided on the connecting shaft (2). The switch switch is used for driving the isolation/grounding three-station mechanism (10), and a certain distance is formed between them, and they are respectively sleeved on the connecting shaft (2).
A transmission method for a three-station mechanism of a high-voltage cabinet, characterized in that it comprises the transmission device according to any one of claims 1-7, and the transmission method is: when the main shaft of the isolated/grounded three-station mechanism (10) rotates When the torsion bar spring (1) rotates at the front end and locks the connecting shaft (2), the rear end of the torsion bar spring (1) is stationary due to the action of the torsion bar spring fixing part (6). The torsion bar spring (1) Distortion will occur and energy storage will start at the same time; when the torsion bar spring (1) is distorted and the energy storage reaches a certain level, the isolation/grounding three-station mechanism (10) will release the flower-shaped connecting shaft (2) ), at this time, the torsion bar spring (1) will release energy by restoring deformation, thereby driving the connecting shaft (2) to move.