JPH0475917A - Device for moving footboard - Google Patents

Abstract

PURPOSE:To ensure safety of a work scafford without any collision between a rolling table and a moving footboard by transferring the moving footboard which opens and shuts upper surface of a pit interlocking with the table of an overturning device. CONSTITUTION:When a work piece 9 is transferred from a transfer device 3 and mounted on the table 23 of an overturning device 2, a conveyer chain, fixed to the narrow footboard 14 of a moving footboard 10, is moved in the direction opposite to an overturning device 2 around a sprocket 11 and hung and housed in a pit 4. Then movement of the chain stops and upper surface of the pit 4 is opened, when a rail 8 on the end of the footboard comes to a position where a distance toward a floor surface rail 1 becomes a preset dimension. Next, the table 23 is turned over and stored in the pit and works on the work piece 9 by an operator and can be carried out safely via the footboard 10. A carriage moves on the rail 7 and the rail 1 when the moving footboard 10 shuts the whole surface of the pit, and transport carriage can be carried out on the rail 8 and the rail 1 when the pit is partially opened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a treadle moving device for working on an overturning device.

[Conventional technology]

I! Figures 3 and 4 show a conventional treadle device. In the figures, (1) shows the rails of the transport cart installed along the floor, and (2) shows the overturning device, which transports the platform to the table 21' on the top surface. A stopper opening is provided to hold the loaded items during rollover. (3) is a transfer device such as a roller conveyor, (4) is a focus that is narrowed by interrupting a part of the rail (1) on one side on the floor of the table 121 of the overturning device (2) in the prefecture direction; 506) is a tread made of steel material provided with a connecting rail +71 (8), and (9) is a workpiece that will become a product.

Next, the operation will be explained. Rails installed on the floor (1
) and a - corner direction, an overturning device (2) and a transfer device (3) are successively provided. The workpiece (9 pieces) is transferred by the transfer device (3) and transferred onto the rollers of the table ALL kept horizontally in the overturning device (2), and is placed with the end in contact with the stopper. In this state The upper surface of the pit (4) is completely covered with a wide tread (5), and the connecting rail (7)
It communicates with the interrupted floor rails (υ) to enable movement of a transport vehicle (not shown).

Next, when attaching a heavy member to the side of the workpiece (9), first remove the treadle (5) and use the drive device (not shown) attached to the overturning device (2) to move the table QL' to 90WL.
Roll over. At this time, one end of the workpiece 7 (9) in the rollover direction is held by the stopper τ to prevent it from falling off, and the other end is maintained at a height near the waist of the worker to ensure good workability.

In this case, the lower end of the table +211, which has been overturned and stands upright, has entered the pit (4), and the remaining pit (4)
The top surface is covered with another tread (6), and the connecting rail (8) communicates with the rail (1) on the floor surface to enable the transfer of a transport vehicle (not shown), and also to connect the overturned workpiece (1) (not shown). It serves as a foothold for workers during work such as installing heavy components with a crane.

[Problem to be solved by the invention]

Since the conventional treadle device is configured as described above, the treadle must be replaced each time the table of the tipping device overturns, and the treadle must be replaced! If the W theory is forgotten, there have been accidents such as the table colliding with the tread, and the creator falling into the pit.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a treadle moving device in which a treadle moves in accordance with the overturning movement of a table of a tipping device.

[Means for Solving Problem ff] The tread moving device according to the present invention has a moving tread that measures the upper surface of a pit that is provided by interrupting a part of the rail thrown on the floor. It has a connection rail that operates in conjunction with the operation of the table of the overturning device and communicates with the interrupted floor rail when the pit top surface is opened and closed.

[For production]

In the treadle moving device according to the present invention, the treadle moves in conjunction with the table of the overturning device, so there is no collision between the table and the treadle, and an appropriate work platform can always be obtained.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In Figures 2 and 2, αO is a movable step plate, and a narrow step plate α (
are successively fixed adjacent to each other, and a predetermined HF
A root-shaped tread a is fixed between the connecting rails (7) (81) attached to M. This is an operating device that is connected in conjunction with the .

Next, the operation will be explained. As in the past, the workpiece (a man is transferred from the transfer device (3) to the overturning device (2) and placed on the table Ω. When the operating device aθ is pressed,
First, the conveyor chain a3 moves in the opposite direction to the overturning device (2) by the actuation of the driving device *Q1+ of the movable tread αQ, and the narrow tread α4 fixed to the conveyor chain a3 moves along the arc of the sprocket (2). It is housed in the pit (4) while forming a polygonal shape, and when the upper surface of the pit (4) is opened to a predetermined size by the connection rail (8) at the end of the movable tread αQ, the driving device aυ of the movable tread 00 is opened. stops and pulls #
! The drive device of the overturning device (2) operates and the table aV
is turned over 90 degrees and fits into the space opened in the pit (4).

Next, to return the overturned table Q11 of the overturning device (2) to a horizontal state, press the button on the operating device αG.
First, the driving device of the rotation M i W (2) is activated to return the table clll to a horizontal position, and then the moving treadle ClCl
The drive device aυ of is activated, and the moving plate 01 is turned over by the overturning device (2
) direction to close the upper surface of the pit (4).

When the movable tread GO covers the entire top surface of the pit (4), the connection rail (7) communicates with the rail (1) on the floor surface, and the table C1l of the overturning device 1 (2+) cartwheels and the focus ( 4)
When the top surface has a -N opening, another connecting rail (8) communicates with the rail (1) to enable movement of the carrier (not shown).

In addition, in the above embodiment, a part of the rail on one side of the pair of rails (1) is interrupted, but if necessary, it is also possible to interrupt the rails on both sides. (
7) It is natural that (8) be provided in pairs.

In addition, although we have shown the case where the top surface of the focus (4) is communicated with the rail (1) through the connection rails (7) and (8) when the movable tread αq is opened or closed, respectively, it should be communicated only during either one of the times. It is also possible.

〔Effect of the invention〕

As described above, according to the present invention, the movable tread that opens and closes the top surface of the pit that interrupts a part of the rail provided on the floor operates in conjunction with the operation of the overturning device, and when the top surface of the pit is opened and closed. Since it is configured to have a connecting rail that communicates with the above-mentioned middle rail, there is no collision between the overturning table and the movable treadle, and safe work can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a treadle moving device according to an embodiment of the present invention, FIG. 2 is a side view after the device has been moved, FIG. 3 is a plan view of a conventional treadle device, and FIG. 4 is a top view of the treadle moving device when it falls over. FIG. (1) is the rail, (2) is the overturning device, (4) is the pit, (
7) (8) is the connection rail, 00 is the moving device, and Q6 is the operating device. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A rail provided on the floor surface, an overturning device installed along a direction perpendicular to this rail and capable of horizontally attaching and detaching a workpiece and rolling it over downward, and the above-mentioned rail on the floor in the overturning direction of this overturning device. A pit excavated by interrupting a part of the pit, a movable tread that slides over the pit in a direction perpendicular to the rail in conjunction with the operation of the overturning device to open and close the top surface of the pit, and a movable tread on the pit. is provided with a moving rail that communicates with the rail during at least one of opening and closing of the pit top surface.