JPH07123539A - Mounting/demounting mechanism for high capacity inverter - Google Patents

Abstract

PURPOSE:To allow mounting/demounting of a high capacity inverter, which can not be transported by manpower, onto/from a switchboard in safety by one person. CONSTITUTION:An intermediate board 6 stretches across the inlet of a switchboard 1 on the floor face 11 for installing an inverter 2 and the loading space of a litter 5 incorporating the lower unit of the inverter 2, i.e., a truck 22, and elevating/lowering the inverter 2 with casters. The lifter 5 mounting the inverter 2 is moved just in front of the switchgear 1 and then the casters 53 are locked before the loading space 51 is elevated up to the height of the floor face 11 of the switchboard 1. The intermediate board 6 is then set and the inverter 2 is transferred from the litter 5 to the switchboard 1 by means of a truck 21 and installed in place. Since the inverter 2 is transferred by means of the lifter 5 and the truck 21, the mounting/demounting work can be conducted in safety by only one person.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attaching / detaching device for easily attaching / detaching a large-capacity inverter having a weight which is difficult to move by human power alone to / from a switchboard.

[0002]

2. Description of the Related Art In recent years, a large-capacity inverter incorporated in a switchboard is often operated continuously for 24 hours as the equipment to which it is applied operates. In such cases,
It is demanded that a small number of people be able to remove and install the inverter from the switchboard in a short time during periodic inspections or should the inverter break down.

A device shown in FIG. 2 is conventionally known as a detaching device for attaching and detaching the inverter. In the figure, 1 is a switchboard and 2 is a large-capacity inverter, which is installed in the switchboard 1 at a position indicated by a solid line. Therefore, the hanging metal fitting 21 is provided at the upper end of the inverter 2 as a detaching device, and the hoist 4 is installed just above the switchboard 1. Then, when mounting the inverter 2, the inverter 2 that has been transported directly below the hoist 4 is hung by the hoist 4 by hanging the wire 41 between the hanging metal fitting 21 and the hoist 4, and the inverter 2 can be lifted by a few people. The hoist 4 is gradually loosened while being pushed into the switchboard 1 and brought to the installation location. Even when removing, the inverter 2 is slightly lifted by the hoist 4 and moved forward while being supported by pushing the inverter 2 by a few people, and then taken out from the switchboard 1.

[0004]

In the conventional attaching / detaching device,
Since the inverter 2 cannot be lifted vertically at the installation position, it is necessary to push in the inverter 2 when attaching and detaching it, and it is necessary to gather several people to support it. There was a risky point.

An object of this switchboard is to provide a large-capacity inverter attaching / detaching device in which the attaching / detaching work can be safely carried out and the inverter can be attached / detached by one person.

[0006]

In order to achieve the above object, according to the present invention, an inverter is mounted on a switchboard,
In addition, a detaching device for removing is provided with a unit truck incorporated in the lower part of the inverter, and a transfer board that is bridged between the upper surface of the carrier of the lifter that raises and lowers the inverter for each unit truck and the inverter installation floor surface entrance of the switchboard. It shall be.

[0007]

[Operation] The inverter mounted on the trolley is lifted up to the height of the installation floor surface, moved by the trolley to the installation location across the transfer plate, and is installed for each trolley. Therefore, it is not necessary for a large number of people to support or push, and it is possible to attach and detach by one person, and the work can be performed extremely safely.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, and the portions common to or the same as those in FIG. In FIG. 1, reference numeral 22 denotes a dolly which is a unit device of the inverter 2, and is provided below the inverter 2 so as to mount the inverter 2.
Reference numeral 5 is a lifter having a cargo bed 51, a hydraulic jack 52 for raising and lowering the cargo bed 51, and casters 53, and guards 54 are provided on the back and left and right side surfaces. Reference numeral 6 denotes a transfer plate which is detachably bridged between the upper surface of the loading platform and the entrance of the floor surface 11 on which the inverter 2 of the switchboard 1 is installed.

In the above structure, when the inverter 2 is mounted on the switchboard 1, the inverter 2 with the carriage 22 is attached.
Is placed on the lifter 5 at an appropriate place. One worker pushes the lifter 5 and is safely held by the guard 54 to move the lifter 5 to the front of the switchboard 1. Caster 53
Is fixed by a clamp (not shown), and the platform 51 is lifted by the hydraulic jack 52 to a height where the upper face of the platform is substantially horizontal to the floor of the switchboard, and the transfer plate 6 is attached between the platform 51 and the floor 11. The truck 22 on which the inverter 2 is mounted is pushed forward by the worker, moves forward, crosses the transfer plate 6, and the truck 22 is mounted on the floor 11 by the mounting bracket 12 when the inverter 2 reaches the installation position of the switchboard 1. The inverter 2 is fixed to the surface 11 and the inverter 2 is also fixed to the switchboard 1 at the predetermined position, and the mounting of the inverter 2 is completed. Inverter 2
When removing, the procedure may be the reverse of the above. In this way, the inverter 2 can be safely attached to or removed from the switchboard 1 by one worker. Moreover, it is not necessary to install hoisting equipment such as hoists around the switchboard.

[0010]

According to the present invention, a unit truck having an attaching / detaching device for mounting / removing the inverter on / from the switchboard, and an upper surface of a carrier of a lifter for lifting the inverter of each unit truck and the switchboard are installed. The inverter 2 is configured so as to be provided with a bridge plate that is bridged over the floor surface entrance, so that the inverter 2 can be easily attached to the switchboard 1 by one worker and without danger, and the switchboard can also be installed. It becomes possible to remove from 1.

[Brief description of drawings]

FIG. 1 is a side view for explaining mounting of an inverter on a switchboard by a conventional attaching / detaching device.

FIG. 2 is a side view for explaining mounting of the inverter by the mounting / demounting device according to the embodiment of the present invention.

[Explanation of symbols]

 1 Switchboard 2 Inverter 5 Lifter 6 Passing plate 21 Truck

Claims (1)

[Claims] 1. A device for attaching / detaching a large-capacity inverter to a switchboard, comprising a unit truck incorporated in the lower part of the inverter, a lifter bed upper surface for raising / lowering the inverter together with the unit truck, and an inverter installation floor of the switchboard. An attachment / detachment device for a large-capacity inverter, characterized in that it is provided with a transfer plate that bridges between the surface entrance.