JPS6250398B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an automatic operation switching device for an overhead crane.

[Background of the invention]

When transporting materials, automatic operation of cranes is desirable in terms of efficiency, but on the other hand, it increases equipment costs, so parts that do not require automatic operation may be operated manually. For example, in an automatic pickling device, movement from the material shelf to the pickling device is manually operated by ground operation, and only movement between processing tanks in the pickling device is automatically operated.

[Purpose of the invention]

An object of the present invention is to achieve switching from manual operation to automatic operation automatically and with a simple mechanism in response to the automatic operation of overhead cranes as described above.

[Summary of the invention]

The key point of the present invention is that a chucking mechanism using the action of a cam and a balance is provided between the crane main body and an automatically operated traveling body.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Figures 1 and 2 represent an overall view of the operation of an overhead crane in an automatic pickling device. The crane body 1 travels on the traveling rail 2 and moves from the manual operation section A to the automatic operation section B. At the switching position from A to B, the connecting shaft 7 attached to the crane body 1 and the cam 9 attached to the traveling body 4 for automatic operation are connected, and the operation is switched to automatic operation. Note that the position detection of the crane is transmitted from a traveling body 4 moving in parallel with the crane main body 1 to an automatic operation control panel 6 via a chain 5. That is, as shown in the figure, the chain 5, which has one end fixed to the traveling body 4, passes through a position detector at one end of the automatic traveling section, makes a U-turn at the other end, and is fixed to the traveling body 4. The position detector detects the position of the traveling body 4, that is, the crane 1, by the movement of the chain 5 due to the traveling of the traveling body 4. The automatic operation control panel 6 causes the crane 1 to automatically operate in the automatic operation section based on the signal from the position detector.

The configuration and operating state of the automatic operation switching device will be explained with reference to FIG. The device includes a connecting shaft 7 attached to the crane main body 1, a cam 9 rotatably supported on the traveling body 4 via a rotating shaft 10,
It consists of a stopper 11 for the horizontal position of the cam 9 provided on the traveling body 4, and the like. Figure 3a shows the cam 9 when the crane main body 1 is in the manual operation section.
The cam 9 is in an oblique state hanging over the guide roller 8 provided at the switching position. Figure 3b shows the state at the switching position, where the cam 9 is pushed by the movement of the connecting shaft 7 provided on the crane body 1, and as it slides on the guide rollers 8, it gradually becomes horizontal due to the action of the balance. Specifically, as shown in FIG. 3c, when the connecting shaft 7 hits the stopper 11, the cam 9
The crane body 1 and the traveling body 4 are completely connected to each other, and automatic operation begins.

The above is an explanation of switching from manual operation to automatic operation, but the switching from automatic operation to manual operation is a completely opposite operation as the traveling body 4 moves in the opposite direction of the arrow.

〔Effect of the invention〕

According to the present invention, an overhead crane can be automatically switched from manual operation to automatic operation, and from automatic operation to manual operation, and has a simple mechanism.

[Brief explanation of the drawing]

1 and 2 are a plan view and a front view showing the state in which the present invention is applied to an automatic pickling device, and FIG. 3 is a front view showing the state in which the present invention is in operation. 1... Crane body, 4... Traveling body, 7... Connection shaft, 8... Guide roller, 9... Cam, 10... Rotating shaft, 11... Stopper.

Claims (1)

[Scope of Claims] 1. A connecting shaft that runs on a traveling rail, is capable of running manually and automatically, and is perpendicular to the running direction and protrudes horizontally. a crane comprising: a guide roller installed above the passage surface of the connecting shaft on the traveling rail side of the switching position between the manual operation section and the automatic operation section of the crane; a traveling body that travels; and a notch that is rotatable in the vertical direction and is attached to the traveling body so as to be rotatable upward by riding on the rollers, and has a notch on the lower surface for engaging with the connecting shaft. a cam; a chain having one end fixed to the traveling body and the other end fixed to the traveling body through one end of the automatic traveling section and the other end; and movement of the chain to cause the traveling body to move. An automatic operation switching device for an overhead crane, comprising: a position detector that detects the position of the crane; and an automatic operation control panel that inputs a signal from the position detector to automatically operate the crane.