JPS6134338Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a walking beam device.

Walking beam devices are used, for example, when transporting large heavy objects such as coils of steel plates or other products at a predetermined pitch. An example of the conventional structure of this walking beam device is shown in FIG.

In FIG. 1, the reference numeral 1 indicates a fixed beam, which is fixedly placed on a part of the line.
For example, a pair of fixed beams or several fixed beams are provided in parallel on the left and right sides, and the movable beam 2 is arranged between these fixed beams in parallel with the fixed beams. The movable beam 2 is formed into a frame shape, and a cylinder 3 is connected to one end thereof.

An operating beam 4 is disposed below the movable beam 2 via a roller 5 so as to remain parallel to the movable beam 2, and a cylinder 6 is connected to one end of the operating beam 4. The working beam 4 has legs 7, 7 on its underside. Each leg 7 is connected to a slope 9 via a roller 8.
It's on top.

Based on the above structure, assuming that a heavy object W is now placed on the fixed beam 1 and that the upper end surface of the movable beam 2 is located below the upper end surface of the fixed beam 1, The heavy object W is supported by the fixed beam 1. In this state, heavy objects W
If you want to feed at a predetermined pitch on fixed beam 1,
First, the cylinder 6 is operated to move the operating beam 4 to the right in FIG. 1 by a predetermined stroke. Then, since there is a roller 5 between the movable beam 2 and the working beam 4, and the movable beam 2 is held by the cylinder 3, the movable beam 2 does not move in the horizontal direction, and the working beam 4 only moves. When , the working beam 4 climbs the slope 9 via the roller 8 attached to the lower end of the leg 7, and as a result, the working beam 4 moves upward to the right,
The movable beam 2 moves vertically upwards. Therefore, the heavy object W is vertically lifted by the movable beam 2 and separated from the fixed beam 1, as shown by the chain line in FIG. In this state, the cylinder 6 is stopped, the cylinder 3 is activated, and the movable beam 2 is moved to the right in FIG. 1 by a predetermined stroke. Then, heavy goods W
Since it is on the elevated movable beam 2, it is horizontally moved to the right at a predetermined pitch as shown by the chain line in FIG. In this state, when the cylinder 6 is operated in the opposite direction and the operating beam 4 is moved to the left in FIG. also descends,
When the upper end surface of the movable beam 2 reaches below the upper end surface of the fixed beam 1, the heavy object W is supported by the fixed beam 1.

Thereafter, by repeating the same operation, the heavy object W will be conveyed on the fixed beam 1 at a predetermined pitch.

By the way, if the conventional structure as described above is adopted, the legs 7 and the two rollers 5 and 8 are required, and the whole apparatus becomes tall and large, and has the disadvantage that it requires a lower space. Another disadvantage is that the legs 7 are bent.

The present invention was devised in order to eliminate the above-mentioned drawbacks of the conventional technology, and its purpose is to provide a walking beam device configured to reduce the overall height of the device and to reduce the space it occupies. It is said that

The present invention is a walking beam device in which a fixed beam and a movable beam are installed in parallel, and a roller device that moves up and down on an inclined surface is provided, and the movable beam is placed directly on the roller device so as to be horizontally movable. It is something.

Figure 2 and subsequent figures explain the configuration of the present invention.
In the figure, the same or corresponding parts as in FIG.

In the embodiment shown in FIGS. 2 and 3, roller devices 10 are provided at both ends of the working beam 4. In the embodiment shown in FIGS. This roller device 10 includes, for example, two types of rollers rotatably attached to a shaft 11 provided on the operating beam 4, as shown in FIG. That is, the left and right rollers 12, 12 forming one type of roller ride on two rails 13, 13 laid on the slope 9, and the center roller 14 forming the other type of roller rides on two rails 13, 13 laid on the slope 9. It is in contact with the lower surface of the rail 15 provided on the lower surface of the movable beam 2. That is, the movable beam 2 is placed directly on the roller. Note that the rollers 12 and 14 can also be combined into one roller.

On the other hand, a link lever 1 is attached to one end of the movable beam 2.
One end of the link lever 16 is rotatably connected, the other end of the link lever 16 is connected to the upper end of another link lever 17, and the lower end of the link lever 17 is rotatably connected to a fixed bracket 17a. ing. A midway portion of the link lever 17 is rotatably connected to the tip of a piston rod of a trunnion-shaped cylinder 18 attached to a bracket 18a.

On the other hand, one end of the working beam 4 is connected to the bracket 19a.
It is rotatably connected to the tip of the rod of a trunnion-shaped cylinder 19 attached to the cylinder.

Next, the operation of the apparatus of the present invention constructed as above will be explained.

First, when the upper end surface of the movable beam 2 is below the upper end surface of the fixed beam 1, the heavy object W is supported by the fixed beam 1, and is in the state shown by the solid line in FIG. In this state, when the cylinder 19 is operated without operating the cylinder 18 and the operating beam 4 is moved to the right in FIG. 2, the operating beam 4 climbs up the slope 9 via the rollers 12, 12. As a result, the movable beam 2
is lifted vertically, and the heavy object W is separated from the fixed beam 1 and raised vertically. At this time, rollers 12 and 14
Since it can rotate freely relative to the movable beam 2
No horizontal movement occurs, only vertical movement. In this state, when the cylinder 18 is operated and the link lever 17 is rotated clockwise in FIG. 2, the movable beam 2 is horizontally moved to the right in the figure via the link lever 16, and the heavy object W is also movable. beam 2
The robot is moved horizontally by a predetermined pitch while riding on the vehicle. In this state, when the cylinder 19 is operated and the operating beam 4 is moved backward, the rollers 12, 12 descend on the slope 9, so the movable beam 2 placed on the roller 14 also descends, causing the heavy object W is lowered and placed on the fixed beam 1. Thereafter, by repeating the same operation, the heavy object W will be conveyed on the fixed beam 1 at a predetermined pitch.

In addition, in the first embodiment, the roller device 1
0, we have shown an example in which two types of rollers 12 and 14 are installed on the same axis, but in this case, only one roller is installed on one shaft, this one roller is placed on the slope 9, and this roller is placed on the slope 9. The movable beam 2 may be placed directly on top.

As described above, according to the present invention, the walking beam device does not have the conventional legs 7 on the working beam 4, and the conventional rollers 5 and 8 are placed on the upper surface and the lower end of the working beam 4. A structure is adopted in which a roller device 10 that moves up and down on the slope 9 is provided, and the movable beam 2 is placed directly on the roller device 10 so as to be able to move horizontally.
The height of the entire device can be significantly reduced compared to conventional devices, making it more compact. In addition, since the two types of rollers are arranged in a line and supported on the same shaft, the entire device can be made even lower, and is highly stable and resistant to overturning. Also,
Since the shaft is shared, the number of parts that require precision machining is reduced and the weight is reduced, resulting in low manufacturing costs.Since the driving energy is also reduced, running costs are also low.
Furthermore, a walking beam device that occupies a small space can be provided with an extremely simple structure. Furthermore, the roller device can be made durable.

[Brief explanation of the drawing]

Figure 1 is a front view illustrating a conventional structure, Figure 2 is a front view illustrating an embodiment of the present invention, and Figure 3 is a front view illustrating a conventional structure.
It is a - line enlarged sectional view of a figure. 1...Fixed beam, 2...Movable beam, 3,
6, 8, 19...Cylinder, 4...Working beam,
9...Slope, 10...Roller unit, 12,1
4...Roller, W...Heavy object.

Claims (1)

[Scope of utility model registration request] A walking beam device in which a fixed beam and a movable beam are provided in parallel, including a roller device in which a roller that moves up and down on an inclined surface and a roller that moves freely horizontally with the movable beam are supported on the same axis. Walking beam device.