JPS605820B2 - manual operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manual operating device used, for example, in an electric operating mechanism of an on-load tap changer.

Generally, a load tap switching device is driven by obtaining a predetermined voltage based on a command from an electric operating mechanism, but when this electric operating mechanism has an electrical failure, the tap switching device Because it is necessary to manually switch the tap to a predetermined layer, a manual operating device is attached. However, since this manual operating device incorporates a complicated link mechanism and cam mechanism, it not only has a complicated configuration and is troublesome to operate, but also can be prone to malfunctions due to the need to operate it quickly in emergencies. It is difficult to assemble and adjust, and it is difficult to provide it at a low price. In view of the above-mentioned points, the present invention temporarily connects the engaging portion of the operating shaft that transmits power to the main shaft with the engaging pin of the manual handle and the locking sphere of the locking member through a slide ring having a cam surface. The object of the present invention is to provide a manual operating device which aims to lock and connect an operating shaft to the main shaft, and at the same time transmit power to the main shaft, thereby switching the tap to a predetermined position. .

Hereinafter, the present invention will be described with reference to an illustrated embodiment.

In FIGS. 1 to 4, reference numeral 1 denotes a machine frame in the tap switching device, and a stepped cylindrical locking member 2 is attached to a boss la of the machine frame 1 by a fixed plate 3. The operating shaft 5 having a gear 4 is mounted on the post la and the locking section 2 substantially in unison with the gear 7 of the main shaft 6.
Although the operating shaft 5 is rotatably mounted so as to transmit power to the operating shaft 5, the gear 4 of the operating shaft 5 does not mesh with the gear 7 during normal operation.

Further, a flange 8 with a fixed lj is provided approximately in the middle of the operating shaft 5, and an extensible spring 9 is interposed between the flange 85 and the machine frame 1.

Furthermore, an engaging portion 5a and an arc-shaped circumferential groove 5b are provided at the outer end of the operating shaft 5, and a plurality of locking balls 10 are arranged in the locking member 2 adjacent to the circumferential groove 5b. Circumferential groove 5b
It is attached so that it can be sunk inside. Note that O-rings 11 and 12 are provided on the iron joint portion of the locking member 2, respectively. On the other hand, a fitting portion 13a of the manual handle 13 can be removably engaged with the small diameter end 2a of the locking member 2, and a cam surface 14a is provided within this fitting portion 13a. The slide ring 14 has a sliding behavior in one direction due to the elasticity of the spring 15, and is loosely fitted with iron, but is prevented from slipping outward by the stopper 16.

Furthermore, an engagement pin 17 is provided in the drum beat portion 13a so as to engage with the engagement portion 5a, and the engagement pin 17 engages with the engagement portion 5a, and the manual handle By rotating 13, the operating shaft 5 can be rotated. Therefore, if manual operation is to be performed due to a failure of the electric operating mechanism, the manual handle 13 is iron-coupled to the outer end of the locking member 2, as shown in FIG.

Next, the iron part 13a of the manual handle 13 is attached to the spring 15.
Resisting the elasticity, press in the direction indicated by the arrow in Figure 2 to make the iron fit. Then, the cam surface 14a of the slide ring 14 comes into contact with the locking ball 101 and tries to move the coin stopper ball 10 in the axial direction, but since it is blocked by the outer peripheral surface of the operating shaft 5, the locking ball 101 moves. 10 does not move, but when the iron joint part 13a is pushed roughly, the engaging pin 17 engages with the engaging part 5a against the elasticity of the springs 15 and 9, and the operating shaft 5 is moved. Move the gear 4 inward to the main shaft 6
It is adapted to engage with the gear 7 of. The locking ball 10 then falls into the circumferential groove 5b. Furthermore, by pushing in the formation part 13a, the locking sphere 10 comes into contact with the inner circumferential surface of the slide ring 14, and the locking ball 10 is no longer locked in a state stronger than the stored elasticity of each of the springs 9, 15. be in a state of being (See Figure 3). In this way, the manual handle 13 is temporarily engaged with the engaging portion 5a of the operating shaft 5, and by rotating the manual handle 13, the main shaft 6 is rotated, thereby switching the tap to a predetermined position. It's getting old.

On the other hand, after the manual operation is completed, the manual handle 13 is pulled out in the direction of the arrow as shown in FIG. 4 to return to the state shown in FIG. 1.

As described above, according to the present invention, the engagement pin 17 of the manual handle 13 and the locking ball 10 of the locking member 2 cooperate with the engagement portion 5a of the operating shaft 5 that transmits power to the main shaft 6. This makes it possible to connect the operating shaft 5 to the main shaft 6 by locking it via the slide ring 14 having the cam surface 14a, and at the same time transmit power to the main shaft 6, so that the handling operation can be performed in one step. , the main shaft 6 and the operating shaft 5 can be connected and temporarily locked to prevent them from slipping out, and the structure is simple and assembly and adjustment are easy.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a manual operating device according to the present invention, and FIGS. 2 to 4 are diagrams for explaining the operation of the present invention. 1... Machine frame, 2... Locking member, 5...
Operation shaft, 6... Main shaft, 10... Locking sphere, 13
...Manual handle, 14...Slide ring,
17... Engagement pin. Volume J Symbol 2 Ticket 3 Ticket 4

Claims (1)

[Claims] 1. A locking member is fitted onto the boss 1a of the machine frame 1 using a fixed wheel plate 3 so as not to come off, and the operating shaft 5 that transmits power to the main shaft 6 is loosely attached to the locking member 2. An elastic spring 9 is interposed between the flange 8 of 5 and the machine frame 1, and an engaging portion 5a and a circumferential groove 5b are provided at the outer end of the operating shaft 5, and a circumferential groove 5b is provided adjacent to the circumferential groove 5b. A locking sphere 10 is attached to the locking member 2, and the fitting portion 13a of the manual handle 13 having the engagement pin 17 is engaged with the engaging portion 5a, and the locking ball 10 is fitted from the outside. This fitting part 1
A manual operation device characterized in that a slide ring 14 having a cam surface 14a inside 3a is prevented from coming out by a stopper 16, and is fitted by giving sliding behavior in one direction by the elasticity of a spring 15. .