JPH082618A - Transfer mechanism of stacker crane - Google Patents

Abstract

PURPOSE:To control shock and load collapsing during acceleration and deceleration at the time of loading carried articles by providing a fixing mechanism for fixing a fork section to a guide section which guidingly supports the fork section oscillatably in the travel direction of a stacker crane and moreover fixing the fork section at a fixed position on an elevating body at the fixed stopping position of travel. CONSTITUTION:In a stacker crane for receiving and delivering carried articles 18, an elevating body 6 is elevatably provided along middle frames 3, 4 on a lower frame 1 having traveling wheels 15, 16, and a transfer machine 7 is loaded on the guide rail 8 having the radius of curvature R of the elevating body 6. At the time of loading work of the carried articles, the transfer machine 7 is positioned and fixed at a fixed position on the elevating body 6 by guide rollers 9, 10 with a clutch for executing the loading work. In accelerating the travel, the guide rollers 9,10 are released from a fixed state to oscillatably guide the transfer machine 7 in a travel direction, and external force caused by acceleration being due to the oscillation of the transfer machine 7 in the travel direction can therefore be set free by the pendulum phenomenon of the transfer machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacker crane for transferring and moving an object to be stored therein, and more particularly to a stacker crane transfer suitable for transferring and accelerating heavy objects and objects that easily collapse. Regarding mounting mechanism.

[0002]

2. Description of the Related Art In the prior art, unless the traveling acceleration / deceleration is decreased, the load on the stacker crane falls or the load collapses.

[0003]

In the prior art, there is a limit to the acceleration / deceleration that does not cause the load to collapse or fall. In the present invention, the external force due to the acceleration / deceleration is positively absorbed as the internal force balance. As a result, when loading a heavy object or a transported object that easily collapses, it is possible to reduce shock to the loaded object due to traveling acceleration / deceleration.

[0004]

[Means for Solving the Problem] Stacker crane Acceleration α External force (W / g) generated by
The α portion can be released by the pendulum phenomenon of the load and the fork portion without causing the load collapse.

[0005]

It is possible to reduce the shock when accelerating and decelerating when loading a heavy object, suppress the collapse of the load, etc., and set the traveling acceleration larger than that of the conventional technique.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a stacker crane, and FIG. 2 illustrates the principle of the present invention.

1 is a stacker crane for loading or unloading a transported object 18, which includes a lower frame 1, an upper frame 2, an intermediate frame 3, 4, an on-board control panel 5, a lifting body 6, a transfer machine 7, It is composed of traveling wheels 15 and 16, a guide rail 8, guide rollers 9 and 10 with a clutch for stopping a fixed position, and elevating guide rollers 11, 12, 13 and 14.

At the time of loading and unloading the conveyed objects, the guide rollers 9 and 10 with clutch are positioned and fixed at a fixed position on the elevating body 6 to perform the work. At the time of traveling acceleration, the guide rails 8 that release the fixation of the guide rollers 9 and 10 with clutches and swingably support the transfer machine 7 in the traveling direction in the lifting body 6 according to FIG. The acceleration α is set by freely swinging in the traveling direction during acceleration / deceleration.
The external force (W / g) × α generated by the above can be released by the pendulum phenomenon of the transfer machine 7. Transfer machine 7 after completion of acceleration
Is driven by driving the guide rollers 9 and 10 with the clutch, and is positioned and fixed at a fixed position on the elevating body 6. In the case of deceleration, the same operation as in acceleration is performed.

[0009]

As described above, according to the present invention, it is possible to reduce the shock and the collapse of the load when accelerating and decelerating when the objects to be conveyed are loaded, and it is possible to set the acceleration larger than that in the prior art. In addition, it also serves to buffer the shake of the entire stacker crane. Because of this, it is possible to increase the speed of the stacker crane.

[Brief description of drawings]

FIG. 1 is an explanatory view of a stacker crane.

FIG. 2 is an explanatory view of the operating principle of the transfer mechanism of the present invention.

[Explanation of symbols]

1, 2 ... Lower frame, 3, 4 ... Intermediate frame, 5 ... On-machine control panel, 6 ... Elevating body, 7 ... Transfer machine, 8 ... Guide rail, 9, 10 ... Guide roller with clutch for fixed position stop,
11, 12, 13, 14 ... Elevating guide rollers, 15, 1
6 ... traveling wheels, 17 ... traveling rails, 18 ... objects to be conveyed.

Claims (1)

[Claims] 1. A stacker crane that transfers and stores an object to be stored, and a fork part that transfers an object to be stored between a transfer mechanism part and a shelf and the fork part swings in the traveling direction of the stacker crane. It has a fixing mechanism that is fixed to a guide that movably guides and supports the guide, and has a fixing mechanism that fixes the fork at a fixed position on the lifting body when the traveling stop is at a fixed position. A stacker crane transfer mechanism characterized by loading.