JP3080240B2 - Transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer apparatus, and more particularly, to an apparatus having a structure in which a bogie is connected to an automatic guided vehicle.

[0002]

2. Description of the Related Art In recent years, there has been a tendency for unmanned transport vehicles to be used for transporting automobile bodies and the like. In this automatic guided vehicle,
There is a left and right independent drive type, that is, a configuration in which the left and right drive wheels are driven by different motors. In such a vehicle, when the left and right driving wheels are rotated in opposite directions, the vehicle body performs a spin turn. That is, in this case, there is an advantage that an inner wheel difference does not occur and a traveling space is reduced.

[0003] By the way, as a method of transporting by an unmanned transport vehicle, a method of directly loading an article W to be transported onto an unmanned transport vehicle a as shown in FIG. 3 and a method of carrying a loaded article W as shown in FIG. There is a method of towing b by an automatic guided vehicle a.

[0004]

However, according to the former method, a large impact is applied to the automatic guided vehicle a when the transported object W is loaded on the automatic guided vehicle a, and the size of the transferred object W is large. However, there is a problem that the cost of the unmanned guided vehicle a must be increased.

On the other hand, the latter method has a drawback that the spin turn cannot be performed and the traveling characteristics of the automatic guided vehicle a cannot be utilized.

An object of the present invention is to solve such a problem, and an object of the present invention is to prevent the traveling characteristics of the automatic guided vehicle from being impaired even though the truck is connected to the automatic guided vehicle. An object of the present invention is to provide a transport device.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a transporting apparatus for connecting a traveling vehicle on which an article is to be carried to an unmanned transporting vehicle and running the vehicle. A pair of left and right casters are installed, and a pair of left and right wheels are installed at the center of the bogie so that one of these casters rises from the ground,
While providing a space for the automatic guided vehicle to enter into the truck, the drive wheels of the automatic guided vehicle are configured to be independently driven left and right, and the ground point of the drive wheel of the automatic guided vehicle is set at the center of the truck. The automatic guided vehicle is connected to a bogie so as to be on the same straight line as the ground point of the wheel provided in the vehicle.

[0008]

FIG. 2 conceptually shows a transfer apparatus according to the present invention.

In FIG. 1, reference numeral 1 denotes an automatic guided vehicle provided with a front wheel 2 and a rear wheel 3, and the rear wheel 3 is configured to be independently driven left and right. The transport vehicle 1 has a pair of traction pins 4 on the rear upper surface, and the pins 4 are configured to be able to move up and down.

Reference numeral 5 denotes a bogie having a pair of left and right casters 6 and 7 at the front and rear, respectively, and a pair of right and left wheels 8 is provided between the casters 6 and 7. The wheels 8 are installed such that one of the front and rear casters 6, 7 floats off the ground. The carriage 5 includes a partition plate 9, and the partition plate 9 has a pair of engagement holes 10 slightly behind the wheels 8.

After the automatic guided vehicle 1 is sunk into the space 11 below the partition plate 9 of the carriage 5, the unmanned carrier 1
Is raised and engaged with the engaging hole 10 of the partition plate 9 to be connected to the carriage 5. At this time,
The ground contact point between the rear wheel 3 of the automatic guided vehicle 1 and the wheel 8 of the bogie 5 is on the same straight line as shown in FIG. In addition,
The traction pin 4 of the automatic guided vehicle 1 is actually
13 to be engaged.

Now, when the left and right rear wheels 3 of the automatic guided vehicle 1 are rotated in opposite directions, the automatic guided vehicle 1
A spin turn starts around the intermediate point of the vehicle, but since the rear wheel 3 and the wheel 8 of the truck 5 are arranged as described above, the truck 8 also makes a spin turn with the automatic guided vehicle 1.

Also, since the carriage 5 is configured so that one of the front and rear casters 6 and 7 is lifted off the ground, even if there is a slight step on the ground, the carriage 5 moves back and forth around the wheel 8. You can get over it while rocking.

Depending on the position of the center of gravity of the transferred object W, the front casters 6 of the carriage 5 may rise from the ground, but even in such a case, the carriage 5 does not hinder the traveling at all.

[0015]

According to the device of the present invention, the front and rear portions of the truck are
While installing a pair of left and right casters,
So that one of these casters rises off the ground
Since a pair of left and right wheels is installed in the center of the above-mentioned bogie,
Even if there is some level difference on the ground,
You can get over it while rocking. Ma
In addition, the automatic guided vehicle is connected to the bogie so that the ground points of the drive wheels of the automatic guided vehicle are on the same straight line as the ground points of the wheels of the bogie, so that the bogie can also make a spin turn, A free running pattern can be obtained.

Further, by replacing the carriage, it is possible to carry objects of various sizes, which is advantageous not only in terms of cost, but also, when the objects are loaded, impacts on the automatic guided vehicle. It does not extend.

[Brief description of the drawings]

FIG. 1 is a side view of the device according to the present invention.

FIG. 2 is a perspective view conceptually showing the same apparatus, showing a state where an automatic guided vehicle is separated from a cart.

FIG. 3 is a diagram conceptually showing a conventional example.

FIG. 4 is a diagram conceptually showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unmanned guided vehicle 2 Front wheel 3 Rear wheel (drive wheel) 4 Traction pin 5 Dolly 6 Front caster 7 Rear caster 8 Wheel 9 Partition plate 10 Engagement hole 11 Space

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-128884 (JP, A) JP-A-1-248209 (JP, A) Japanese Utility Model Showa 58-142175 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B62B 3/00 B62D 53/02 B61B 13/00

Claims (1)

(57) [Claims] 1. A transfer device for connecting and transporting a truck on which an object to be loaded is mounted to an unmanned transport vehicle, wherein a pair of left and right casters are installed at a front portion and a rear portion of the truck, respectively . One rises from the ground
A pair of left and right wheels is installed at the center of the above bogie
And, while providing a space for the automatic guided vehicle to sink into the carriage, the drive wheels of the automatic guided vehicle are configured to be independently driven left and right, the ground point of the drive wheels of the automatic guided vehicle,
A transfer device, wherein the automatic guided vehicle is connected to the bogie so as to be on the same straight line as a ground contact point of a wheel provided at a center portion of the bogie.