JPH0242709Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used for loading and unloading products onto and from pallets, and is suitable for tilting and lifting pallets to facilitate the work. Regarding a lifting device.

[Prior art]

In general, when loading processed products onto pallets or removing products from pallets, it is necessary to arrange the products in an orderly manner, especially when the bottom area of the pallet is large and the pallet is equipped with partitions. It is desirable to
Furthermore, if the product is heavy, it is preferable to raise and lower the pallet to keep the loading and unloading positions constant from the viewpoint of reducing heavy manual labor.

Conventional devices for improving work life of this type have the function of tilting the pallet from a horizontal position to a certain tilted position, or have both tilting and lifting functions, but both functions are performed by separate actuators. It was operated by

[Problem that the invention attempts to solve]

However, with equipment that only has a tilting function, especially if the bottom area of the pallet is large and the target product is heavy, the height of the top and bottom ends of the pallet will increase when the pallet is placed in a tilted arrangement, causing a significant change in the working posture. Therefore, the workability is not good, and there is a problem that heavy muscle work cannot be completely solved. In addition, in the latter case, which has both tilting and lifting functions, it is necessary to provide separate actuators for each function, which increases the complexity of the device structure and production costs, and also increases the size of the device. There is a problem that this leads to a reduction in the size of the work space.

The present invention focuses on the above-mentioned conventional problems, and aims to provide a pallet tilting and lowering device that has a very simple structure and can perform both tilting and lifting functions using a single actuator.

[Means and actions for solving problems]

In order to achieve the above object, the pallet tilting lifting device according to the present invention includes a pallet truck comprising a suspension member connected to a hoisting device and lifting guides pivotally connected to the suspension member and arranged at different height positions. and a lifting guide plate which is fixed at a constant inclination angle to which the lifting guide of the pallet truck is attached, and which is provided with a cutout for removing the upper lifting guide; The stopper supports the lower lifting guide at a position corresponding to the notch of the guide.

With the above configuration, the pallet truck is guided and regulated by the elevation guide rails, so that it can be raised and lowered in an inclined state by driving the hoisting device. In addition, when tilting the pallet truck from an inclined state to a horizontal state, the lower guide of the pallet truck is stopped by projecting the stopper pin into the lifting guide rail and letting out the hoisting device.
In this position, the upper lifting guide corresponds to the detachment notch of the guide rail, so the lower lifting guide serves as a rotational fulcrum, and the upper edge of the pallet truck passes through the guide rail and becomes horizontal. Therefore, tilting and raising and lowering can be easily performed by moving the stopper pin in and out.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Below, embodiments of the pallet tilting lifting device of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the pallet tilting lifting device of the embodiment includes a gate-shaped structural column 10, from which a chain block 12 serving as a hoisting device is suspended. chain block 12
An inverted U-shaped suspension member 14 is connected to and can be moved up and down by operating the chain block 12. At the tips of both arms of the suspension member 14, there is a pallet truck 18 on which a pallet 16 can be placed.
is pivoted. The pallet truck 18 has an L-shaped side surface, and the upper back end side surface of the pallet truck 18 is used as a pivot point with the suspension member 14. A pair of upper wheels 20 are attached coaxially with the pivot point of the pallet truck 18, and a pair of lower wheels 22 are attached to both sides of the tip of the seat of the pallet truck 18.

Furthermore, two pairs of elevating guide rails 24 and 26 are attached to the inner surfaces of both legs of the structural column 10 for guiding the pallet truck 18 up and down while maintaining a constant inclination angle. One of the lifting guide rails 24 is for guiding the upper wheels 20 of the pallet truck 18.
The upper wheel 20 is attached to a position near the center of the column leg in order to restrict the upper wheel 20 in the lifting range of the column leg. The other lifting guide rail 26 is attached to a position extending forward by a distance corresponding to the seat portion of the pallet truck 18 in order to guide the lower wheels 22 in the lifting range. Therefore, both guide rails 2
4 and 26 are arranged and fixed in parallel to each other at the same fixed angle of inclination. Therefore, the pallet truck 18 is guided by the lifting guide rails 24 and 26 by operating the chain block 12, and can be moved up and down at a constant angle of inclination.

Furthermore, a notch 28 is formed in the middle of the elevation guide rail 24 that guides the upper vehicle 20 so that the upper wheel 20 can be separated from the guide rail 24. In addition, a stop pin 3 for stopping the downward movement of the pallet truck 18 is provided in the middle of the elevating guide rail 26 that guides the lower wheel 22.
0 is attached to the guide rail 26 so that it can be moved in and out automatically or manually, and supports the lower wheel 22 when it is projected into the rail. Here, the attachment position of the stopper pin 30 is set in a certain relationship with the detachment notch 28. That is, the height position is set so that the pallet truck 18 is stopped at a position where the upper wheel 20 faces the notch 28.

The pallet tilting lifting device having such a configuration operates as follows. First, in the lifting/lowering operation, the chain block 12 is hoisted up and let out with the stopper pin 30 removed, so that the pallet truck 18 lifts the pallet 1 via the suspension member 14.
6, it ascends and descends while being guided by wheels 20, 22 and elevation guide rails 24, 26.

Next, when returning the pallet truck 18 from the tilted state to the horizontal state, the operation is performed as follows. With the lower wheel 22 of the pallet truck 18 positioned above the stopper pin 30, the stopper pin 30
After pushing the pallet into the guide rail 26 automatically or manually, the chain block 12 is let out to lower the pallet truck 18. When the lower wheel 22 comes into contact with the stopper pin 30 as the truck 18 descends, the truck 18 tries to rotate around the lower wheel 22, and at this time, the upper wheel 20 faces the notch 28, so as shown in FIG. As shown, the upper end of the pallet truck 18 is connected to the guide rail 24.
It will come out of the way and rotate to a horizontal position. In the horizontal state, the pallet 16 can be taken out from the cart 18 using a lift or the like. Pallet truck 18
If the upper wheel 20 is to be tilted from a horizontal position, the above-mentioned operation may be reversed, and the upper wheel 20 will be placed in the notch 2.
8 until it enters the guide rail 24.
After winding up and rotating 8, the stopper pin 30 can be pulled out.

In this way, according to this embodiment, the distance to the front of the pallet placed on the cart 18 can be kept constant regardless of whether the pallet is raised or lowered, so that the working posture is not changed and work efficiency is improved. In addition, tilting can be easily performed by simply moving the stopper pin 30 in and out, and by simply moving it up and down. Therefore, both tilting and lifting functions can be performed using only a single actuator.

[Effect of idea]

As explained above, the pallet truck is moved up and down along the guide rail arranged at an incline, and the stopper for the lifting guide for wheels etc. provided on the truck and the notch for detachment are provided on the guide rail, so that it can be easily tilted by operating the stopper. Since the present invention can be manufactured multiple times and can perform both functions with a single actuator, it is possible to obtain a pallet tilting and lowering device with an extremely simple structure.

[Brief explanation of the drawing]

FIG. 1 is a front view of the pallet tilting lifting device of the embodiment, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a side view when the pallet is tilted. 12... Chain block, 14... Suspension member, 16... Pallet, 18... Pallet truck,
20... Upper wheel, 22... Lower wheel, 24,2
6...Guide rail, 28...Removal notch, 3
0...Stotsupapin.

Claims (1)

[Scope of utility model registration request] A pallet truck equipped with a suspension member connected to a hoisting device, lifting guides pivotally connected to the suspension member and arranged at different height positions, and the lifting guides of the pallet truck are installed and fixed at a constant inclination angle. It consists of an elevating guide rail that is provided with a notch for removing the upper elevating guide, and a stopper that is attached to the elevating guide rail so as to be freely removable and supports the lower elevating guide at a position corresponding to the notch of the upper elevating guide. Pallet tilting lifting device.