JPS6156157B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo handling device for a lift truck such as a forklift truck, and more particularly to a cargo handling device for a lift truck that has both a carton hook function and a forklift function.

Generally, when handling box-like items such as cardboard boxes (hereinafter referred to as cargo boxes) using a lift truck, there are two methods: the pallet method, in which the boxes are placed on a pallet and transported by a forklift truck, and the other is the pallet method, in which the boxes are placed on a pallet and transported by a forklift truck. There is a carton hook system in which cargo handling operations are carried out by locking a cargo box, which has been wrapped and fixed with a band, with a hook.

However, in recent years, various types of packaging have been proposed that are suitable for the products to be packaged, and packing boxes suitable for the pallet method and boxes suitable for the carton hook method are often mixed together in warehouses, etc. In order to handle and transport these items, it is necessary to deploy a forklift truck suitable for the conventional pallet method and a carton lift truck suitable for the carton hook method, which is wasteful in terms of work management, and improvements to this are desired. was.

In order to meet this demand, in recent years, a carton hook device suitable for the carton hook method and a fork device suitable for the pallet method have been developed to suit the intended use of the lift carriage, which is attached to the front of the lift truck so that it can be moved up and down. Attachment type lift truck cargo handling devices that can be removably replaced and installed have already been proposed.

However, in the case of the above-mentioned attachment type cargo handling device, when shipping the cargo box, it is necessary to replace and attach either the carton hook device or the fork device to the lift carriage depending on the packaging style of the cargo box, so replacement is required. This method requires a lot of labor and time, has poor workability, and has many other problems, such as requiring a place to store other devices that are not in use.

The present invention was devised in view of the current situation, and its purpose is to provide a lift carriage that is movably movable up and down at the front of a lift truck, and to provide a carton hook device and a fork device. By controlling the device and carton hook device so that when one is in the in-use position, the other is in the non-in-use position, it can immediately handle cargo handling operations for either pallet or carton hook methods. It is an object of the present invention to provide a lift truck cargo handling device which is capable of carrying out cargo handling operations smoothly even when the cargo is loaded in either a pallet type or a carton hook type, and which is capable of improving cargo handling efficiency. That is.

The present invention will be described in detail below based on embodiments shown in the accompanying drawings.

The lift carriage 1 to which this invention is applied is
The inner mast of the lift device is comprised of an outer mast disposed in front of a lift truck and an inner mast mounted to the outer mast so as to be movable up and down.

The lift carriage 1 has a carrier body L that is directly guided by the inner mast, a support body S fixed to the carrier body L, and a backrest B fixed to this support body. , this carton hook device C
Fork devices F arranged on both sides of are respectively attached.

As shown in FIG. 3, the carton hook device C includes a pair of left and right brackets 2, a base arm 3 connecting the upper ends of the brackets 2, and a pair of hooks 4 arranged in parallel on the surface side of the base arm 3. ,
The receiving plate 5 is disposed at the lower end of the bracket 2 and comes into contact with the bottom side surface of the box to prevent the box from swinging during transport of the box suitable for the carton hook system. One end of the carton hook device C is pivotally supported on the back side of the receiving plate 5, and the other end is pivotally mounted by a hydraulic cylinder 6 pivotally supported on the support body S. Further, one end of support plates 7 and 8 is pivotally attached to each of the brackets 2 of the carton hook device C, and this one support plate 7
The other end is pivotally connected to the support S, and
The other end of the other support plate 8 is pivotally connected to a pin 9 inserted into the lower end of the support body S, and these support plates 7 and 8 form a parallel link mechanism. This parallel link mechanism pivots in accordance with the expansion and contraction movement of the hydraulic cylinder 6, and moves the carton hook device C to the operating position (see Fig. 1) or to the non-use position where the carton hook device C is stored in the backrest B. Guide it to the storage position (see Figure 2).

Further, as shown in FIG. 3, the fork device F includes a pair of forks 10 arranged in parallel on the outside of the bracket 2 of the carton hook device C, and a connecting body 11 that connects the rear ends of the forks 10, respectively. The fork device F is pivotably mounted by a hydraulic cylinder 12, whose one end is pivotally connected to the connecting body 11 and the other end is pivotally connected to the support body S. The rear end of the fork 10 of this fork device F is pivotally connected to a pin 9 inserted into the lower end of the support S, and
The fork 10 is pivoted following the expansion and contraction movement of the fork 10, and guides the fork 10 to a used position (see FIG. 2) or an unused stored position stored in the backrest B (see FIG. 1).

The fork 10 of the fork device and the hook 4 of the carton hook device F are connected to the driver's seat so that when one is in use, the other is in the retracted state (not in use) stored in the backrest B. The hydraulic cylinder 6 and the hydraulic cylinder 12 form a drive mechanism. Note that the drive devices for the hydraulic cylinders 6 and 12 are similar to the hydraulic circuits for operating the lift cylinders and tilt cylinders, so the details will be omitted.

In this invention, as described above, both a fork device and a carton hook device are disposed on a lift carriage that is movably movable up and down in front of a lift truck. When in use, the other fork is stored inside the back crest, so when performing each task, other devices do not interfere with the work, allowing smooth and reliable fork work. The switching operation can be performed extremely easily and quickly using a switching lever located on the driver's seat, etc., so it is possible to respond to cargo handling tasks more quickly than conventional replaceable types. Since only one machine is required, it is possible to reduce the number of cargo handling equipment, and it is possible to carry out cargo handling operations smoothly regardless of whether the cargo is palletized or carton hooked, thereby improving cargo handling efficiency. This has the effect of making it possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a perspective view of the cargo handling device showing the use state of the fork device, FIG. 2 is a perspective view of the cargo handling device showing the use state of the carton hook device, FIG. 3 is an exploded perspective view showing the structure of the fork device and the carton hook device. F... fork device, C... carton hook device, 1... lift carriage, 5... receiving plate.

Claims (1)

[Claims] 1. A lift carriage 1 consisting of a carrier body L that moves up and down along a mast erected in front of a lift truck, a support body S fixed to the carrier body L, and a backrest B fixed to the support body S; It has a hook 4 disposed at the upper end to lock the upper side of the cargo box, and a receiving plate 5 disposed at the lower end to abut against the lower side of the cargo box to prevent the cargo box from swinging. and a carton hook device C which is pivotally attached to the support body S via a parallel link mechanism so as to be movable back and forth and which is stored in the backrest B when not in use, a pair of forks 10 and the rear ends of these forks 10. It has a connecting body 11 that connects the two parts, and is pivotally connected to the support S through a pin 9, and rotates between a use position for handling cargo loaded on a pallet and a non-use storage position. a movable fork device; and a first hydraulic cylinder connected at one end to the support S and at the other end to the carton hook device C, for moving the carton hook device C forward and backward between a non-use storage position and a use position. 6 and a drive mechanism consisting of a second hydraulic cylinder 12 connected to a support S at one end and a fork device F at the other end and actuated between a use position and a non-use storage position. Cargo handling equipment.