JPS6131720B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a side-type forklift that is equipped with a fork on one side of its body, and is provided with elongated object mounting racks at the front and rear positions so as to sandwich the fork.

In this type of forklift, when transporting a long object, such as a heavy steel material, on the front and rear mounting racks, both ends of the steel material may bend due to the vibration of the aircraft, causing the steel material to bend on the mounting racks. The phenomenon of bouncing is often seen, and this phenomenon causes a lot of noise, which is a nuisance not only to the operator but also to people living in the surrounding area. For this reason, efforts have been made to keep the noise as low as possible by slowing down the traveling speed of the machine, but this results in a significant drop in work efficiency.

Another idea to prevent noise is to tighten the long objects onto the mounting rack using strings or chains, but this method does not involve activating a fork to place the long objects on the mounting rack. Each time the device is lowered, the string, etc., must be tightened and released, which is a very troublesome and time-consuming task, so its adoption has been put off.

In view of these points, the present invention guarantees that long objects can be raised and lowered as before by the operation of a fork, and yet can be firmly placed on a mounting table without wobbling, making it possible to produce long objects with low noise and high efficiency. The aim is to provide a new and useful means of transporting objects.

An embodiment of the present invention will be described below based on the drawings. FIG. 1 shows a side-type forklift as an embodiment of the present invention, in which a fork 2 is provided on one side of the central part of the machine body 1 in the longitudinal direction, and a fork 2 is provided in front of the forklift 2 so as to sandwich the fork 2 from the front and back. Mounting stands 3 and 4 with flat upper surfaces are provided at rear positions. The fork 2 has masts 5, 5 that are erected on the fuselage 1 as a cylinder (not shown) expands and contracts.
It is configured to be able to move up and down along the vertical axis, change the inclination, and even move forward to one side of the aircraft. It can be placed on the mounts 3 and 4 or lowered from the mounts 3 and 4 onto the road surface on the outside of the aircraft body. Further, a control box 6 is provided at the rear of the fuselage 1, and a group of levers for controlling each operation of the fork 2 and the running of the fuselage 1 are installed on the box.

Electromagnets 8, 9 are embedded in the mounts 3, 4 as shown by broken lines, and are configured to be energized/de-energized by an electric circuit shown in FIG. In Figure 2, 10 is a battery mounted on the aircraft 1. As this battery 10,
It is also possible to use the battery that is originally installed in the aircraft to run the aircraft and drive the lift. Reference numeral 11 denotes a limit switch, which is attached, for example, to the lower end of the masts 5, 5, and is turned on by contact with the fork 2 when the fork 2 is at the lower end. Here, when fork 2 is at the descending end,
It is an empirical fact that when the limit switch 11 is switched on, the fork 2 is generally lowered to the lowering end when a long object is placed on the mounting platforms 3 and 4 and the aircraft 1 is moved. Based on. Therefore, the operator places a long object on the mounting racks 3 and 4 in the same manner as before, lowers the fork 2 to the lower end, and runs the aircraft, and the limit switch 11 is turned on and the electromagnets 8 and 9 are turned on. Since the magnets 8 and 9 are energized, the long objects are attracted and held on the mounting frames 3 and 4 by the magnets 8 and 9. In this case, if the adsorption force of the electromagnets 8 and 9 is strong enough, the long object will not bounce on the mounting platform while the aircraft is running.
Therefore, it is possible to run at high speed with low noise. On the other hand, when the aircraft 1 is stopped and a long object on the mounting platforms 3 and 4 is lowered onto the road or a fixed location, the fork 2 must first be raised, so the limit switch 11 is turned off by this action. . Therefore, since the electromagnets 8 and 9 are turned off at that time, there is no problem in the lifting operation of the long object by the fork 2.

Next, FIG. 3 shows a further improvement of the electric circuit of FIG. 2, in which two limit switches 12 and 13 are inserted in series in the circuit of FIG. Each limit switch 12, 13 is provided on the mounting racks 3, 4, and is set to turn on when a long object is placed on the mounting racks 3, 4. According to this configuration, the electromagnets 8 and 9 are energized only when the fork 2 is at the lower end and a long object is placed on the mounting frames 3 and 4. Therefore, when there is no long object placed on the mounting frames 3 and 4 and the fork 2 is lowered to the lower end, in a non-working state, the electromagnets 8 and 9 are not energized, so that power is not wasted. It can be prevented.

Incidentally, in each of the above embodiments, the energization and de-energization of the electromagnets 8 and 9 are automated in relation to the operations such as raising and lowering the fork 2, but the present invention is not limited to such a configuration. Alternatively, as shown in FIG. 4, a manual on/off switch 14 may be inserted between the battery 10 and the electromagnets 8 and 9. In this case, it is preferable that the on/off switch 14 be provided on the control box 6 in parallel with the lever group 7. In addition, in each of the above embodiments, the electromagnets 8, 9
Steel materials are generally used as elongated objects subjected to the adsorption action of , but the present invention can be applied to materials other than steel as long as they are made of ferromagnetic material.

As explained above, the side-type forklift according to the present invention is provided with an electromagnet on the mounting base,
Since the electromagnet is configured to be energized/de-energized manually or in conjunction with the up/down movement of the fork, etc., the following effects can be achieved.

Since long objects such as steel materials are firmly held on the mounting table by the adsorption force of the electromagnets, the long objects do not wobble or bounce while being transported by the machine. Therefore, long objects can be transported at high speed and with low noise.

When operating the fork to lift a long object from the mounting rack, the electromagnet's adsorption action stops automatically or automatically, so there is no problem in lifting long objects from the mounting rack. It can be done without.

Since the adsorption effect of an electromagnet is used to hold long objects on the fire table, the operation of holding and releasing the holding of long objects is as simple as turning a switch on and off, and is automated. It is also easy.

[Brief explanation of the drawing]

The figures show an embodiment of a sand-type forklift according to the present invention, in which Fig. 1 is an overall schematic configuration diagram, Fig. 2 is an electric circuit diagram governing the operation of the main parts, and Fig. 3 and 4 are diagrams.
Each figure is a diagram showing other embodiments of the electric circuit diagram. 1... Airframe, 2... Fork, 3, 4... Mounting stand, 8, 9... Electromagnet, A... Long object.

Claims (1)

[Claims] 1. In a side-type forklift, which is equipped with a fork on one side of the aircraft and has long object loading racks installed at the front and rear positions so as to sandwich the fork, an electromagnet is installed on the aforementioned rack, and the fork lift can be manually or 1. A side-type forklift, characterized in that said electromagnet is configured to be energized or de-energized in conjunction with operations such as up and down movements of said forklift.