JPH088499Y2 - Three-phase batch type circuit breaker - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a three-phase collective type and a breaker, and more particularly to a mounting structure of an operating mechanism.

[Prior art]

FIG. 2 shows a schematic structure of a conventional finger or circuit breaker similar to that shown in, for example, Japanese Utility Model Laid-Open No. 51-93962, and FIG. 2 (a) is a plan view. The figure (b) has shown the side view. In these figures, (1) is a dolly and (2)
Is a wheel for its movement, and (3A), (3B), and (3C) are each a unit for each phase arranged on the trolley, and a breaking unit,
Each is configured as follows. Below, one phase (3
The configuration of (A) will be explained, but the other unit and section unit (3
B) and (3C) are similarly configured. That is, (4) is a lower tank arranged on the dolly (1), which is fixed on the dolly (1) by bolts (5). (6)
Is a lower bushing disposed on the lower tank, (7)
Is a middle tank disposed on the lower bushing, and is fixed to the lower tank (4) together with the lower bushing (6) by a bolt (8). A contact portion (9) is housed in the middle tank (7). (1
0) is an upper bushing arranged on the middle tank (7), and (11) is an upper tank further arranged on the middle tank (7), together with the upper bushing (10) by a bolt (12). It is fixed to the tank (7). Further, (13) is a bearing fixed to the outside of the lower tank (4), (14) is a seal shaft mounted on the bearing (13) and having a gas sealing device (not shown), and (15) is The outer lever fitted to the seal shaft (14) and the inner lever (16) fitted to the seal shaft (14) are almost all located inside the lower tank (4). The connection part (17) is connected to the contact part (9) in the middle tank (7) so that the contact part (9) can be opened and closed.
Reference numeral (18) is an operation mechanism unit mounted on the carriage (1). The operating mechanism unit (18) operates the drive shaft (19), and the phases corresponding to the respective breaking unit (3A), (3B) and (3C) fixed to the drive shaft (19). Drive levers (20A), (20B), (20C), and the free ends (21A), (21B), (21C) of these drive levers and the outer levers (15A), (15A), ( 15B),
The contact portion (9) is driven through a connecting rod (22) (only one phase is shown) that connects the outer end of (15C).

Then, by rotating the drive shaft (19), the drive levers (20A), (20B), (20C) of each phase rotate counterclockwise about the drive shaft (19) in FIG. 2 (b). Move,
As a result of rotating the outer lever (15) and the inner lever (16) clockwise through the connecting rod (22) about the seal shaft (14) in FIG. 2 (b), the connecting portion (17) is passed through. The contact part (9) is opened. The closing operation is performed by operating in the opposite direction to the above.

Since the conventional sushi and breaker are constructed as described above and the sushi and the break unit are provided independently for each phase, there are many constituent parts of the sushi and the break unit, and accordingly, each of the sushi and the break unit is Adjusting the interphase dimension of the shim break unit and operating mechanism unit (18) and each shim break unit (3A), (3B), (3C)
However, there is a drawback that it takes time to position the lever and adjust the connection of each lever.

[Outline of device]

This invention was made in order to eliminate the above-mentioned drawbacks, and the arc extinguishing chamber was constructed by using a three-phase batch type tank, and a rib was provided on the outer wall surface of this tank, and it was housed in this tank. The purpose of the present invention is to provide an operation mechanism unit for operating the ridges and breaks of each phase on the ribs so that adjustments at the time of assembly are not necessary, and that the size and weight are inexpensive and the breaker is not provided.

[Example of device]

An embodiment of the present invention shown in FIGS. 1 (a) and 1 (b) will be described below. 1 (a) is a plan view and FIG. 1 (b) is a side view. In these figures, reference numeral (30) is a three-phase one-piece type ridge or disconnection unit, which is constructed as follows. That is, (31) is a lower tank and is attached to the carriage (1). (6) is a lower bushing, and a three-phase batch type bushing is supported in the lower tank. (32) is a medium tank, which is also configured as a tank in which three phases are collectively formed, and the contact portion (9) of each phase is housed inside. The middle tank (32) is fixed to the lower tank (31) together with the lower bushing (6) by a bolt (8). (10) is an upper bushing, and a three-phase batch type bushing is disposed on the middle tank (32). (33) is an upper tank, which is configured as a tank in which three phases are collectively formed, and is fixed to the middle tank (32) together with the upper bushing (10) by a bolt (12). Reference numeral (18) is an operation mechanism unit of the contact portion, which is mounted on the outer wall surface of the middle tank (32), that is, on the rib (34) provided on the outer wall surface of the arc extinguishing chamber. The operation mechanism unit (18) operates the drive shaft (19) and drives the contact portion (9) via the drive shaft (19). Drive shafts (19)
The basic structure of the drive lever (20) fixed to this and the connecting rod (22) connected to this drive lever is the same as the conventional device, but both correspond to the conventional one phase. The contact portion (9) of each phase housed in the middle tank (32) is coupled to the inner end of the inner lever (16).

Here, the effect obtained by this invention and the reason why it is obtained will be described.

When the operation mechanism unit (18), the bearing (13) including the outer lever (15) and the inner lever (16), and the middle tank (32) including the contact portion (9) are displaced from each other, Although there is a relief in the left and right direction toward the paper surface of FIG.
Since there is no escape due to the structure with respect to vertical and longitudinal displacements, these mounting positions must be adjusted.

However, since the operation mechanism unit (18) and the middle tank (32) are large and heavy, it is difficult to adjust their positions after assembly, while the bearing (13) is small and light, and therefore easy to adjust.

In this device, the operation mechanism unit (18) is installed in the middle tank (3
By attaching to (2), the relative position of each other is not affected by the assembly error of the lower tank (32) (31) and the lower bushing (6), so the above difficult adjustment part becomes unnecessary. .

[Effect of device]

Since the present invention is configured as described above and the operation mechanism unit is commonly used for the three phases, the number of components of the operation mechanism unit is small, and it is not necessary to adjust the interphase dimension.
The adjustment amount of the positional relationship between the operation mechanism unit and the contact portion is reduced.

In addition, by mounting the operating mechanism unit on the middle tank that houses the contact part, the dimensional error that occurs when the lower tank, lower bushing, and middle tank are assembled to the dolly is related to the positional relationship between the contact part and the drive shaft. Since there is no influence, the adjustment of the positional relationship at the time of connecting the lever is only the adjustment of the bearing that is easy to adjust, and there is an effect that the position adjustment after the assembly of the operation mechanism unit, the middle tank, etc., which is difficult to adjust, becomes unnecessary.

[Brief description of drawings]

FIG. 1 shows an embodiment of this invention.
Is a plan view, and FIG. 6B is a side view schematically. FIG. 2 shows a schematic structure of a conventional sashimi and a circuit breaker. FIG. 2 (a) is a plan view and FIG. 2 (b) is a side view. In the figure, (1) is a dolly, (4) and (31) are lower tanks,
(6) Lower bushing, (7), (32) Medium tank,
(10) is the upper bushing, (11), (33) is the upper tank,
(9) is a contact part, (5), (8), (12) are bolts, (18) is an operation mechanism unit, (19) is a drive shaft, (2)
0) is a drive lever, (22) is a connecting rod, (15) is an outer lever, (16) is an inner lever, (13) is a bearing, (14) is a seal shaft, and (34) is a rib. The same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] 1. A lower tank assembled on a table, a lower bushing for three phases assembled on the upper side of the lower tank, and a lower bushing for three phases further assembled on the lower bushing and connected to the lower bushing. A middle tank that accommodates the contact portion and has an upper bushing and an upper tank on the upper portion, one outer lever commonly connected to the contact portions for the three phases, and one connection sequentially connected to the outer lever A three-phase collective form or breaker having a rod, one drive lever, and one drive shaft, through which the contact portion is driven, and an operation mechanism unit for operating the drive shaft is A three-phase collective form or breaker, which is attached to the outer wall surface of the middle tank via a rib.