JPS6034644Y2 - Fine adjustment device for hoisting stacker cranes, etc. - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hoisting fine adjustment device for stopping a hoist (elevating platform) such as a stacker crane at a predetermined position.

In a device that uses a conventional stacker-type crane to load or unload cargo onto or from storage shelves installed on the side of the travel path, the crane truck is moved and stopped at a predetermined address number. After that, the lifting platform is hoisted up to the desired storage shelf by the hoisting drive of the electric motor for driving the lifting platform, and a fork is inserted under the cargo to slightly lift the cargo to allow loading and unloading of the cargo.

According to this method, a slight stopping error is usually allowed as long as it does not interfere with inserting the fork under the cargo.

However, in a system where carriers placed on a lifting platform are transferred to storage shelves in each stage for cargo handling, the stopping position of the lifting platform is set between the rail surface of each storage shelf and the rail surface on the lifting platform. High accuracy is required so that the two match each other.

This invention was proposed in view of the above, and its purpose is to provide a device that can accurately stop a lifting platform at a desired stopping position.

The following description will be given with reference to the embodiment shown in the drawings. Reference numeral 1 indicates a crane body frame, 2 a lifting platform, and 3 a machine platform.

The crane body frame 1 is supported on a track 4 via wheels 5 so as to be movable, and the lifting platform 2 is connected to a hoisting drum 6 supported on a machine platform 3 by a plurality of four wheels 7.7-1.7-2. ..., the ends of which are suspended from ropes 9, 9 attached to a fixed base 8, and are driven by a transmission mechanism 11.
By forward and reverse rotation of the hoisting drum 6 driven via the crane 12, the hoisting drum 6 moves up and down along the inner wall surface of the crane body frame 1.

In such a stacker type crane, the present invention is such that the machine platform 3 is attached to the crane body frame 1 so as to be movable up and down by guide rollers 13, etc., and its lower end is connected via a bracket 14 to the machine frame 1 attached to the main body frame 1. It is connected to the drive jack 15.

Then, the lifting platform 2 is raised and lowered to a position close to a predetermined stop position by the control drive of the hoisting motor 10.1. From this point, the jack 15 driven by the deceleration motor 16 moves the rope to a fixed position, and automatically stops at the fixed position. A sequence is set up to maintain the position.

With this configuration, the lifting platform 2 moves at a speed of a ratio of the rope 9 until it reaches a desired fixed position, and then moves to the desired fixed position by the low-speed drive of the jack, and is moved to a predetermined transfer device. It can be stopped accurately.

Therefore, according to the present invention, the rail surface of the lifting platform 2 and the rail surface of a desired storage shelf can be almost accurately matched, and cargo handling operations can be carried out efficiently.

[Brief explanation of the drawing]

Figure 1 is a side view of the entire stacker type crane, Figure 2 is a front view, Figure 3 is a perspective view showing an example of rope hanging, Figure 4 is a detailed front view of the machine base, and Figure 5 is the same side view. It is a diagram. 1... Crane main frame, 2...
Lifting platform, 3...Machine base, 6...Hoisting drum, 8...Fixed base, 9...Table, 10
...Hoisting motor, 11.12...Transmission mechanism, 14...Bracket, 15...
Jack, 16...Reduction motor.

Claims (1)

[Scope of utility model registration request] A stacker-type crane that uses a hoisting drum drive supported on the hoisting drum to lift and lower a lifting platform suspended from the hoisting drum via a rope to perform cargo handling operations, and the hoisting drum can be moved up and down. A stacker type, which is attached to the main body frame of the crane, and whose lower end is connected to a jack attached to the main body frame, and the jack is driven to finely adjust the hoisting of the lifting platform via the machine base. Fine adjustment device for hoisting cranes, etc.