JPS6224562Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection device for a full trailer and a forklift when the full trailer is moved by a forklift.

A full tractor-trailer combination vehicle has the largest platform volume and loading capacity of any vehicle that can be driven on public roads in Japan, and is therefore used for a variety of purposes. However, at work sites where cargo is loaded and unloaded, there may not be enough turning space, and the so-called jackknife phenomenon may occur when backing up, making it difficult to move with a full trailer connected. It is. Therefore, the trailer must be moved separately from the tractor, but in this case, problems arise with the forklift, the full trailer, and the connecting device. For example, a device is known in which a chain, wire, etc. is attached to the lune eye of a full-trailer dolly to pull it, but in this case, the worker has to get off the forklift and perform the connection work, resulting in low work efficiency. The drawback was that it was impossible to travel backwards.
Furthermore, a device is known in which a pin installed at the rear of the forklift is inserted into the lunetsu eye for towing, but in this case, the mounting position is lower, so the angle of inclination of the dolly frame becomes large, and the dolly frame needs to be attached each time. The disadvantage was that the landing jack had to be operated, resulting in poor work efficiency.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a connecting device that is capable of traveling backwards and allows an operator to connect a full trailer and a forklift while remaining on the forklift.

According to the present invention, the forklift is provided with a pin that engages with the lune eye at the tip of the dolly of the full trailer, and the dolly is provided with a saucer that engages with the fork of the forklift, and the pin and the saucer work together. The action allows the full trailer and forklift to be connected.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 9.

Figures 1 and 2 show an oak lift in which the present invention has been implemented, and a mast 3 that can be tilted forward and backward is provided in front of a driver's seat 2 of a forklift vehicle body 1. Backrests 4 that can be operated up and down are attached symmetrically to the left and right, and integral forks 5 are formed on each of the backrests 4 to protrude toward the front of the vehicle body 1.

The two backrests 4 are connected to each other by an upper finger bar 6 and a lower finger bar 7. The above is a well-known structure of a conventionally used forklift, but in the forklift of the illustrated embodiment, a pin 8 is fixed to the lower finger bar 7 so as to protrude downward. The fixed position is at the center position of both forks 5 in the horizontal direction with respect to the traveling direction of the forklift vehicle body 1, and near the base of the fork 5 in the vertical and traveling direction.

3 and 4 show a full trailer dolly embodying the present invention, in which a lunette eye 10 is provided at the tip of a dolly frame 9. Further, a saucer 11 is fixed to the lower surface of the dolly frame 9, and the saucer 11 includes a saucer main body 13 having hooks 12 formed on both sides, and a shock absorber, ie, a booklet, interposed between the hooks 12 on both sides. In the embodiment, it is composed of a plate 15 supported by a spring 14. As shown in the figure, this saucer 11 is attached to the lower surface (ground side surface) of the dolly frame 9 so that the tip of the hook 12 is directed downward (towards the ground).
will be permanently installed. Note that FIG. 4 shows a state in which the saucer 11 and the fork 5 of the forklift are engaged.

Next, the connection work between the forklift and the dolly of the full trailer in the above embodiment will be explained.

First, as shown in FIG. 5, the mast 3 of the forklift is tilted forward, and the forklift is brought close to the dolly with the backrest 4 held at a predetermined height. During this time, the dolly frame 9 is held substantially horizontally by the landing jack 16 as shown in the figure. FIG. 5 is a view showing the forklift approaching the dolly, and the details of its operation will be explained with reference to FIGS. 6 and 7.
That is, when the forklift is brought close to the dolly by the above operation, the pin 8 of the forklift is located slightly above the dolly's runnet eye 10 in the vertical direction, and the forklift's fork 5
The tip of the dolly is located below the inside of the hook 12 of the saucer 11 fixed to the dolly. Note that the work of operating the mast 3 and backrest 4 to achieve such a positional relationship and bringing the forklift closer to the dolly is a work that can be easily performed by the worker operating the forklift from the cockpit 2. .

Next, as shown by arrow A in Fig. 6, the back crest 4 is lowered slightly to insert the pin 8 into the lunet eye 10. In this state, the mast 3 is tilted backward until the tip of the fork 5 comes into contact with and presses against the shock absorber of the dolly's tray 11. This state is shown in Fig. 8. Furthermore, as shown by arrows B and D in Fig. 9, the back crest 4 is raised while tilting the mast 3 forward, and the landing jack 16 is lifted off the road surface, completing the connection work. The dolly and fork lift can be easily separated after connection by performing the above connection work in reverse order.

The full trailer 17 is then pulled and pushed by a forklift connected to the dolly. This traction or pushing force is transmitted from the forklift to the full trailer through the engagement of pin 8 and lune eye 10. During this time, the fork 5 of the forklift is engaged with the dolly's tray 11, so the dolly is supported by the fork 5 and prevented from descending, and the engagement between the pin 8 and the lune eye 10 is maintained. Also fork 5
is a buffer, that is, plate 1 in this example.
The fork 5 and the receiving tray 11 are engaged with each other via the fork 5 and the spring 14, and this buffer absorbs the vertical vibration of the fork 5 and the receiving tray 11 due to the undulations of the road surface, thereby maintaining the engaged state. Further, when the full trailer 17 is pushed forward by a forklift, the fork 5 is restrained from moving in the lateral direction by the hook 12 of the saucer 11, so for example, the tip of the fork 5 turns laterally around the pin 8. However, no jack knife phenomenon occurs between a forklift and a full trailer.

Note that in the above embodiments, the buffer for the saucer was constructed by combining a spring and a plate.
The shock absorber is not limited to this, and for example, rubber can be used as the shock absorber.

As described above, according to the present invention, the dolly of the full trailer is provided with a saucer that engages with the fork of the forklift, and the setting position of the forklift is provided with a pin that engages with the lune eye of the dolly of the full trailer. Since the dolly of the full trailer and the forklift are connected by the cooperative action of the engagement between the saucer and the fork and the engagement between the pin and the lune eye, the forklift can not only tow the full trailer but also push it forward. You can also do it.
Further, since the connection work can be easily performed by the operator simply by operating the forklift from the operator's seat of the forklift, work efficiency is improved. Further, there is no need for a special moving vehicle to move the full trailer, and the connecting device of the present invention can be easily installed on an existing forklift or dolly, making it economical.

[Brief explanation of the drawing]

Figure 1 is a front view of a forklift implementing the present invention, Figure 2 is a side view thereof, Figure 3 is a partial perspective view of a full trailer dolly implementing the present invention, and Figure 4 is a partial perspective view of a full trailer dolly implementing the present invention.
The figures are a sectional view taken along the line shown in Fig. 3, Fig. 5 is a side view of the start of connection in the connection procedure between a full trailer and a forklift according to the present invention, Fig. 6 is a partially enlarged view of Fig. 5, and Fig. 7 6 is a sectional view taken along the - line in FIG. 6, FIG. 8 is a side view during connection, and FIG. 9 is a side view at the end of connection. 12...Hook, 13...Saucer body, 14...
Spring, 15...Plate, 9...Dolly frame, 11...Saucer, 1...Forklift vehicle body, 5...Fork, 10...Runetsu eye, 8
...Pin, 17...Full trailer.

Claims (1)

[Scope of utility model registration request] It consists of a saucer body with hooks formed on both sides, and a buffer stretched between the insides of the hooks.
A saucer is fixed to the lower side of the dolly frame of the dolly so that the tip of the hook points downward, and the horizontal position is approximately at the center of the forklift vehicle body, and the vertical and longitudinal position is at the base of the fork of the forklift. A full trailer and a forklift configured to work together with a pin that protrudes downward and is fixed to the forklift at a position set to be a nearby position and that is engageable with a lune eye provided at the tip of a dolly. connection device.