CN210223833U

CN210223833U - Main shaft rotation limiting device for bypass change-over switch electric appliance

Info

Publication number: CN210223833U
Application number: CN201921347331.7U
Authority: CN
Inventors: Jianzhen An; 安建珍; Ke Guan; 管柯; Haijun Yang; 杨海军; Yang Gao; 高阳; Hongmiao Qian; 钱泓妙; Junxian Han; 韩俊贤; Xiaoqun Gu; 顾小群; Chunjia Xu; 徐春佳; Xiaoya Wu; 吴晓亚
Original assignee: WUXI HANKWANG ELECTRIC CO Ltd
Current assignee: WUXI HANKWANG ELECTRIC CO Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-03-31
Anticipated expiration: 2029-08-19

Abstract

The utility model relates to a bypass automatic transfer switch electrical apparatus, in particular to a main shaft rotation limiting device used in a bypass transfer switch electrical apparatus, which comprises a bracket and a fixed limiting device, wherein the bracket comprises an upper bracket and a lower bracket which correspond to the main shaft and are arranged in parallel; the fixed limiting device comprises a fixed plate and a limiting plate, the fixed plate and the limiting plate are arranged between the upper support and the lower support, the two ends of the fixed plate are respectively connected with the upper support and the lower support, the limiting plate is vertically arranged on the fixed plate, and through holes used for limiting the main shaft are formed in the upper end and the lower end of the limiting plate. The utility model has simple structure, ensures the axial rotation of the main shaft, and can not deform to cause inconsistent pressure of the moving contact; the limiting and fixing device can be arranged at a plurality of longitudinal positions of the main shaft, so that the effect of the device is ensured; the device is an independent mechanism, is not influenced by other mechanisms of the switch, and does not interfere the actions of the other mechanisms of the switch.

Description

Main shaft rotation limiting device for bypass change-over switch electric appliance

Technical Field

The utility model relates to an automatic change over switch electrical apparatus of bypass, concretely relates to main shaft rotation stop device for among the bypass change over switch electrical apparatus.

Background

Generally, a common automatic transfer switching device does not limit a rotating main shaft or selects a half-opening limiting fixing plate for limiting, so that the rotating main shaft cannot be limited by axial rotation, namely after the rotating main shaft drives a moving contact to rotate to close a switch, the main shaft deforms due to different forces generated longitudinally by the main shaft, so that the pressure of contacts in all phases is different, and all phases of the switch generate different heat in the normal operation process, so that a certain phase is burnt out due to low contact pressure and overhigh temperature rise.

Disclosure of Invention

The utility model aims at solving the above problem, a be used for bypass automatic transfer switch electrical apparatus to rotate main shaft stop device is provided, the problem of rotating the main shaft deformation has been avoided to the unanimity of switch contact pressure has been guaranteed.

According to the technical scheme of the utility model, the main shaft rotation limiting device used in the bypass transfer switch electric appliance comprises a bracket and a fixed limiting device, wherein the bracket comprises a corresponding main shaft, an upper bracket and a lower bracket which are arranged in parallel; the fixed limiting device comprises a fixed plate and a limiting plate, the fixed plate and the limiting plate are arranged between the upper support and the lower support, the two ends of the fixed plate are respectively connected with the upper support and the lower support, the limiting plate is vertically arranged on the fixed plate, and through holes used for limiting the main shaft are formed in the upper end and the lower end of the limiting plate.

Furthermore, the outer side of the limiting plate is connected with a beam for mounting the moving contact.

Furthermore, the fixed limiting devices are arranged in parallel.

Furthermore, the upper end of the upper support and the lower end of the lower support are bent towards one side of the main shaft to form a protection plate.

The beneficial effects of the utility model reside in that: the structure is simple, the axial rotation of the main shaft is ensured, and the deformation is avoided, so that the pressure of the moving contact is not consistent; the limiting and fixing device can be arranged at a plurality of longitudinal positions of the main shaft, so that the effect of the device is ensured; the device is an independent mechanism, is not influenced by other mechanisms of the switch, and does not interfere the actions of the other mechanisms of the switch.

Drawings

Fig. 1 is a schematic diagram of a partial structure of a bypass transfer switching apparatus.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is another angular view of fig. 1.

Fig. 4 is a schematic structural diagram of the bracket and the fixed limiting device of the present invention.

Fig. 5 is another angular view of fig. 2.

Description of reference numerals: 1-fixing plate, 2-limiting plate, 3-main shaft, 4-upper support, 5-lower support, 6-cross beam and 7-contact group.

Detailed Description

The invention will be further described with reference to the following specific embodiments and the accompanying drawings.

As shown in fig. 1: in the bypass transfer switch electric appliance, each group of moving contacts 7 is installed on a switch base plate base (the switch base plate base is not shown in the figure, and the moving contacts 7 are in a group), and has respective fixed installation positions, and switch side plates (not shown in the figure) are installed on two sides of the base plate base. Two ends of two main shafts 3 are fixed on a switch side plate, a moving contact 7 is connected with the main shafts 3 through a connecting plate on the main shafts 3, and when the main shafts 3 rotate under the thrust action of an operating mechanism, the moving contact 7 is driven to rotate. The beam 3 is arranged between the two main shafts 3, and two ends of the beam are also fixed on the switch side plate and used for installing each group of moving contacts and keeping horizontal connection with each group of moving contacts.

A main shaft rotation limiting device for bypass change-over switch electrical apparatus, including support and fixed limiting device. The support comprises an upper support 4 and a lower support 5 which correspond to the main shaft 3 and are arranged in parallel, and two ends of the upper support 4 and two ends of the lower support 5 can be fixed on the switch side plate. Fixed stop device is including setting up fixed plate 1 and limiting plate 2 between upper bracket 4 and lower carriage 5, and upper bracket 4 and lower carriage 5 are connected respectively to the both ends of fixed plate 1, and limiting plate 2 is installed perpendicularly on fixed plate 1, and open at the upper and lower both ends of limiting plate 2 has the through-hole that is used for spacing main shaft 3, and the main shaft can only rotate in the middle of the through-hole when rotating, can not take place to warp.

Specifically, the middle part of the outer side of the limiting plate 2 is connected with the cross beam 6, so that the stability and the reliability of the limiting device structure are further guaranteed. Fixed stop device can be for the multiunit that sets up side by side, sets up according to the structure and the needs of switch, and the flexibility ratio is high. The upper end of the upper support 4 and the lower end of the lower support 5 are bent towards one side of the main shaft 3 to form a protective plate, and the protective plate plays a certain role in protecting the main shaft 3.

When the operating mechanism pushes the main shaft to rotate, so as to drive the moving contact to rotate, the limit of the utility model ensures that the rotating main shaft rotates axially, and the main shaft is limited to be bent and deformed under the action of the thrust of the mechanism, thereby avoiding the phenomenon of inconsistent pressure of the contact after the switch is switched on; meanwhile, the device is not influenced by other mechanisms of the switch and does not interfere the actions of the other mechanisms of the switch.

Claims

1. A main shaft rotation limiting device for a bypass transfer switch electric appliance is characterized by comprising a support and a fixed limiting device, wherein the support comprises a corresponding main shaft (3), an upper support (4) and a lower support (5) which are arranged in parallel; fixed stop device is including setting up fixed plate (1) and limiting plate (2) between upper bracket (4) and lower carriage (5), upper bracket (4) and lower carriage (5) are connected respectively to the both ends of fixed plate (1), limiting plate (2) are installed perpendicularly on fixed plate (1), and open at the upper and lower both ends of limiting plate (2) has the through-hole that is used for spacing main shaft (3).

2. The main shaft rotation limiting device for the bypass change-over switch electric appliance according to claim 1, wherein the outer side of the limiting plate (2) is connected with a beam (6) for mounting a movable contact (7).

3. The apparatus as claimed in claim 1, wherein the fixed limiting means is a plurality of sets arranged side by side.

4. The main shaft rotation limiting device for the bypass change-over switch electric appliance according to claim 1, wherein the upper end of the upper bracket (4) and the lower end of the lower bracket (5) are bent toward the main shaft (3) side to form a guard plate.