JP2000309496A - Lifter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the moving work of an electric apparatus by a lifter by providing a rotary base on a carriage body rotatably around a vertical shaft arranged at nearly the center position of the rotary base, fixing the rotary base to the carriage body, and liftably providing a lift base for mounting the electric apparatus on the rotary base. SOLUTION: A pair of insertion holes 13a are formed at positions of a dimension R from a vertical shaft 14 on a rotary base 13 so that the rotary base 13 can be fixed to a carriage body 11 each time it is rotated by 90 deg.. Lock pins 15 are inserted into the insertion holes 13a as fixing means, and holes for inserting the lock pins 15 are formed on the carriage body l1 at each 90 deg. on the circumference of the radius R around the vertical shaft 14. A pair of supports 16 are erected on the rotary base 13. A lift base 19 for mounting an electric apparatus is liftably provided on a pair of supports 16, and the lift base 19 is interlockingly connected to a hoisting unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifter, and more particularly, to a lifter in which a portion of a lift table rotates about a vertical axis.

[0002]

2. Description of the Related Art A circuit breaker is housed in a switchboard. To facilitate maintenance and inspection of the circuit breaker, a draw-out circuit breaker is used as the circuit breaker. Since the draw-out circuit breaker may be provided in a plurality of stages inside the switchboard, a lifter having a lift mechanism is used so that the draw-out circuit breaker at a high place can be carried out or carried in.

FIGS. 5 and 6 show the structure of a conventional lifter. As shown in the figure, a frame 4 is erected on a bogie main body 1 having wheels 2, and a lift 5 is provided on the frame 4 so as to be able to move up and down. The elevator 5 is connected to a hoisting unit 8 via a rope 3 and pulleys 6 and 7.

In order to carry out the drawer-type circuit breaker housed in the switchboard, the lifter is positioned on the front side of the switchboard 10 as shown in FIG. The elevator 5 is lowered and carried out. On the other hand, when the lifter is to be directly carried into the switchboard 9, the lifter is turned 180 °.

[0005]

However, it is not easy to change the direction of the lifter with the drawer-type circuit breaker mounted on the elevating platform because the center of gravity is high and unstable. If there is no space in the electric room in front of the switchboard, it is difficult to move or change the direction of the lifter.

Therefore, an object of the present invention is to provide a lifter that solves the above problem.

[0007]

According to a first aspect of the present invention, there is provided a lifter comprising: a rotating platform disposed on a bogie main body having wheels at a substantially central position of the rotating platform; And a fixing means for fixing the turntable to the bogie main body is provided, and an elevating table for mounting electric devices is provided on the turntable so as to be able to move up and down. And

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lifter according to the present invention will be described below.

As shown in FIG. 1, a bogie main body 11 is provided with four wheels 12, and the bogie main body 11 has a square shape as shown in FIG. Each of these wheels 12 has no directionality, and is provided with a rotation preventing stopper (not shown). As shown in FIG. 2, a turntable 13 is rotatably provided on the cart body 11. That is, as shown in FIG. 3, the turntable 13 can turn around a vertical shaft 14 arranged at the center of the square.

Each time the turntable 13 is turned by 90 °, the pair of insertion holes 1 is positioned at a position R from the vertical axis 14 of the turntable 13 so as to be fixed to the carriage body 11.
3a is formed and a lock pin 15 as a fixing means is inserted into the insertion hole 13a, while 90 mm is provided on the circumference of the bogie main body 11 having a radius R centered on the vertical axis 14.
A hole 11a into which the lock pin 15 is inserted is formed for each angle. As shown in FIG. 4, a pair of columns 16 are erected on the rotation table 13, a handle 17 for rotating the rotation table 13 is fixed to the column 16, and a lock pin 15 is pulled up to form a hole. Lever 1 for extracting from 11a
8 is linked to the lock pin 15.

An elevating table 19 for mounting electric equipment is provided on the pair of columns 16 so as to be able to move up and down. The elevating table 19 is connected to a hoisting unit (not shown).

Next, the operation of the lifter will be described. For example, when the switchboards 9 and 10 are arranged facing each other as shown in FIG. 5, it is assumed that the drawer-type circuit breaker in the switchboard 10 is to be moved into the switchboard 9. In such a case, the elevator 1
9 is set to a predetermined height, and the draw-out circuit breaker 20 is mounted on the elevating platform 19 as shown in FIG.

Next, by pulling the pair of levers 18, the pair of lock pins 15 is raised and pulled out of the hole 11a, and in this state, the handle 17 is grasped and the turntable 13 is moved to one position.
Rotate 80 °. When the hands are released from the pair of levers 18, the pair of lock pins 15 descend again and the pair of holes 1 are released.
1 a, the turntable 13 is fixed to the carriage body 11.

As a result, the lifter is turned into the same state as having turned the direction by 180 °, so that the lifter is advanced toward the switchboard 9 and then the draw-out circuit breaker 20 is carried into the switchboard 9.

In this embodiment, the rotatable table is configured to be fixed each time the rotary table is rotated by 90 ° with respect to the bogie main body. Is also good. In addition, as the electric device to be mounted on the elevating platform, not only the draw-out circuit breaker but also various devices can be mounted.

[0016]

As can be seen from the above description, claim 1
According to the lifter according to the above, since the turntable having the elevating table on which the electric device such as the draw-out circuit breaker is mounted can turn with respect to the bogie main body, the direction of the electric device can be changed without changing the direction of the lifter itself. Can be changed. Therefore, the operation for moving the electric device by the lifter is easy.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a lifter according to the present invention.

FIG. 2 is a cross-sectional view of a main part according to the embodiment of the lifter according to the present invention.

FIG. 3 is a view of the lifter according to the embodiment of the present invention, taken along the line AA of FIG. 2;

FIG. 4 is a configuration diagram in the vicinity of a handle according to the embodiment of the lifter according to the present invention.

FIG. 5 is a configuration diagram of a conventional lifter.

FIG. 6 is a view taken in the direction of arrows BB in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Bogie main body 12 ... Wheel 13 ... Rotating stand 14 ... Vertical axis 15 ... Lock pin 19 ... Elevating stand 20 ... Draw-out circuit breaker

Claims (1)

[Claims] 1. A swivel base on a bogie body having wheels,
The rotating table is provided so as to be rotatable about a vertical axis disposed substantially at the center of the rotating table, and fixing means for fixing the rotating table to the bogie main body are provided. A lifter characterized in that the table is provided so that it can be moved up and down.