JPH064571Y2 - Fixing device for electric equipment with wheels - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a fixing device for a static electric device having wheels for moving such as a transformer and a reactor.

[Conventional technology]

In recent years, the building area and height such as underground substations and indoor substations are small, restrictions on the loading, unloading, and moving work of substation equipment are large, and the distance between the place where installation work can be done and the installation site is large. There is a tendency that constraints such as large are increasing. Therefore, in order to avoid these constraint conditions, an increasing number of wheeled electric devices have been provided with a wheel device guided by a rail at the bottom of the substation device to facilitate the movement of the device. By the way, in the case of an electric device with wheels, it is necessary to fix the device on the floor using a fixing device at the installation site in order to avoid the trouble that the device moves on the track or falls due to an earthquake or the like.

FIG. 3 is a side view showing a conventional fixing device, and FIGS. 4A and 4B are enlarged views of main parts thereof viewed from directions different from each other by 90 °. In the figure, reference numeral 1 is a tank of an electric device, for example, a transformer, and a wheel mounting seat 2 welded to the bottom of the wheel mounting wheel 2 of a wheel device 10 and a frame 4 supporting an axle 5 are bolted to each other. As shown in FIG. 4B, for example, the electric equipment 1 is supported by being guided by a guide rail 12 partially embedded in a concrete floor, and the electric equipment 1 can be moved along the guide rail 12.

On the other hand, the fixing device 11 is such that a fixing metal fitting 7 is inserted between a mounting seat 6 welded to the bottom of the electric device 1 and a base socket 8 buried in a concrete foundation, and both ends of the fixing metal fitting 7 are attached to the mounting seat 6 and the base socket 8. By bolting to
Lifting of the wheels due to movement of the electric device in the direction of the guide rail 12 and movement of the center of gravity of the electric device is prevented, and a situation in which the electric device moves, derails, or falls due to an earthquake or the like is prevented.

[Problems to be solved by the device]

In the conventional fixing device, the height H of the fixing fitting 7 has a dimension corresponding to the total height of the wheel device 10. For this reason, when the electric device receives a lateral load due to an earthquake or the like, a large bending moment is generated in the fixing metal fitting 7, and the fixing metal fitting 7 needs to have rigidity to withstand this, and the fixing metal fitting is large in size as the section modulus increases. There is a problem of increasing the weight. In addition, there is a problem in that it is difficult to attach such a heavy fixture, and it takes time to position the attachment seat 6 and the base socket 8. In addition, since the large-sized fixing bracket projects to the side of the electric device 1, there is also a problem that the safety of walking of an operator inspecting the device is impaired.

An object of the present invention is to simplify the structure of the fixing device and facilitate the fixing work.

[Means for Solving the Problems]

In order to solve the above problems, according to the present invention, in an electric device having a plurality of wheel devices guided by guide rails, a wheel device having an axle protruding toward one end side and a protruding portion of the axle penetrates. A fixing bracket having an axle hole for
With a foundation socket embedded in a concrete foundation,
It is assumed that the fixing metal fitting is coupled to the base socket in a state where the protruding portion of the axle is inserted into the axle hole.

[Action]

In the above means, the axle hole of the fixing bracket whose lower end is fixed to the base socket is engaged with the axle of the wheel to prevent the wheel from being lifted from the rail surface and moving in the guide direction of the rail. As a result, the height of the point of action of force on the fixing bracket is greatly reduced to a size that corresponds to the radius of the wheel, and the bending moment is reduced to less than half that of the conventional model, so the section modulus of the fixing bracket is small and it is compact. In addition, the mounting seat on the electric device side and the corresponding seat on the fixing metal fitting side are not required, and the structure of the fixing device is greatly simplified. In addition, electrical equipment can be fixed by a simple work of bolting the fixing bracket to the basic socket with the axle penetrating the fixing bracket axle hole, so the weight of the fixing bracket is reduced and the fixing work is greatly reduced. ， Time is saved.

[Embodiment] The present invention will be described below based on an embodiment.

FIG. 1 is a side view showing an embodiment device of the invention of FIG. 2, and FIGS. 2A and 2B are enlarged views of main parts of the embodiment device viewed from directions different from each other by 90 °. Detailed description will be omitted by using the same reference numerals.
In the figure, a fixing device 20 is composed of a fixing metal fitting 17 having an axle hole 15 and a base socket 8 embedded in, for example, a concrete foundation, and a vertical plate 17A and a base plate 17B are welded to each other and integrally fixed. Vertical plate 17A of metal fitting 17
The base plate 17B is fixed to the base socket 8 with the bolts 9 with the extension portion 5A of the axle 5 inserted in the axle hole 15 formed in 1.

In the apparatus of the embodiment thus configured, the electric device 1
The lifting of the wheel 3 from the rail surface due to the movement of the center of gravity of the wheel 3 is prevented by the axle 5 being inserted into the axle hole 15 of the fixing bracket 17 to prevent the vehicle from tipping over or falling off the wheel, and also from the tread surface of the wheel 3 to the guide rail 12. The flange protruding on the inner surface of the shaft engages with the guide rail 12 to receive the lateral load in the direction of the axle 5. Therefore, the lateral load applied to the fixing bracket 17 is mainly the load in the direction along the guide rail 12, and the point of action of the lateral load on the fixing bracket 17 is shortened to almost the radius of the wheel 3, so that the fixing is performed. The bending moment generated in the metal fitting 17 is reduced to less than half that of the conventional device, and the section modulus thereof is also halved. Further, the mounting seat 6 and the fixing metal fitting on the electric device 1 side in the conventional device are fixed. Since the side seat is also unnecessary, the fixing metal fitting 17, which is a main part of the fixing device 20, can be made simple in structure, small in size, and lightweight as shown in the figure, and the fixing work can be performed in the axle hole 15 as well. A simple operation of fixing the base plate 17B of the fixing metal fitting to the base socket 8 with the bolt 9 with the extension portion 5A of the axle inserted is sufficient, and there is an advantage that the fixing operation can be saved in time and labor. In addition, since the fixed metal fittings that are attached do not overhang to the side of the electric device, a safe working environment can be secured.

[Effect of device]

As described above, the present invention, as described above, fixes the electric equipment guided by the wheel device to the foundation socket embedded in the concrete foundation by the fixing bracket having the axle hole that engages with the extension portion of the axle. Configured. As a result, the point of action of lateral load due to an earthquake, etc. is reduced to less than half that of the conventional device in which the fixing bracket is bolted to the bottom of the electrical equipment and the base socket, and the bending moment generated in the fixing bracket accordingly. Since it also reduces to less than 1/2 and does not require a mounting seat for electrical equipment, the structure of the fixing device is greatly simplified and downsized, and the fixing device is also easy to install. It is possible to provide an electric device with wheels.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment device of the present invention, FIGS. 2A and 2B are enlarged views of main parts of the embodiment device viewed from directions different from each other by 90 °, and FIG. 3 is a side view showing a conventional device. FIG. 4, FIG. 4A, and FIG. 4B are enlarged views of the main part of the conventional device viewed from directions different from each other by 90 °. DESCRIPTION OF SYMBOLS 1 ... Electric equipment, 2 ... Wheel mounting seat, 3 ... Wheel, 4 ... Frame, 5 ... Axle, 10 ... Wheel device, 6 ... Mounting seat, 7, 17
... Fixing hardware, 8 ... Foundation socket, 5A ... Extension part of axle, 11, 20 ... Fixing device, 12 ... Guide rail, 15 ...
Axle hole, 17A ... follower plate, 17B ... base plate.

Claims (1)

[Scope of utility model registration request] 1. An electric device having a plurality of wheel devices guided by guide rails, wherein the wheel device has an axle protruding toward one end side, and a fixing member having an axle hole through which the protrusion of the axle penetrates. A fixing device for a wheeled electric device, comprising: a foundation socket embedded in a concrete foundation, wherein a fixing metal fitting is coupled to the foundation socket in a state where a protruding portion of an axle is inserted into an axle hole.