JPS6132841Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pallet transport vehicle, and more specifically, the invention is for transporting pallets loaded with products to a product unloading position, and transporting empty pallets to a product loading position. For example, in FIG. 1, a loaded pallet loaded with products at the product loading position 106 is sent to the product unloading position 102, or empty pallets at empty pallet storage positions 101, 104, etc. are sent to the product loading position 106. This relates to a pallet transport vehicle used for transporting pallets. In the figure, reference numeral 5 denotes a rail for running the parent truck for conveying pallets.

Conventionally, this type of pallet transport vehicle called a traverser was generally configured so that the wheels of the child vehicle ran across a joint rail between the traverse rail on the parent vehicle and the ground-side crossing rail at a product loading/unloading area. . Therefore, caution and skill are required to join the rails together, and the rail joining operation must be redone frequently. In addition, if the rails are not joined enough due to misalignment of the stop position of the parent bogie, the ends of the rails are likely to suffer chipping and wear, so the accuracy of the rail connections, that is, the stopping accuracy of the parent bogie, is subject to virtually severe numerical values. For example, ±10 mm or less was required, and achieving this required an increase in equipment costs and a complicated mechanism. In particular, with the increase in the number of stopping points and the introduction of automated driving, the above problems have become even more prominent. In addition, the essential feature of this type of pallet transport vehicle is that the loaded load is large and the difference between it and when it is empty is large.
Stopping at a fixed point is difficult regardless of whether the control is manual or automatic.

Now, for convenience of explanation, Figures 1 and 2 are shown below.
The lower side in the figure, that is, the loading and unloading area side, is called the front side, and the upper side is called the rear side. Therefore, the entry of the child truck on the parent truck into the loading/unloading area is called forward movement, and the return thereof is called backward movement.

This invention allows the child bogie to always traverse along the transverse rail on the parent bogie, allows for a large error in the stopping position of the parent bogie with respect to the loading/unloading area, and furthermore allows for wear and tear at the end of the transverse rail. The object of the present invention is to provide a pallet transport vehicle that can prevent such problems from occurring.

An embodiment of the present invention will be described below based on the drawings. In the figure, 1 is a parent truck having a low floor portion 2 in the center, and 3 is its wheels. Reference numeral 4 denotes a drive mechanism consisting of a reducer and a motor mounted on the wheel 3 on the right side as viewed in FIGS. (corresponding to rail 5) is formed so that it can run on it. Reference numeral 6 denotes a traversing rail laid on the low floor portion 2 of the parent truck 1, and 7 is a child truck installed within the low floor portion 2 of the parent truck 1. A flanged wheel 8 is disposed at the rear of the child truck 7, and the flange 8a is configured to lightly clamp the transverse rail 6. Note that the flange 8a can be of a single flange type in addition to the double flange type shown in FIG. 2. When the child truck 7 is installed on the parent truck 1, the pallet 9, which is configured to be flush with the raised floor of the parent truck 1 as shown in the figure, is stably placed thereon. There is. Reference numeral 10 denotes a wheelless flange disposed at the front of the child bogie 7, which is formed to roll on a steel plate rail 13 in the form of a flat steel strip attached to the front of the low floor portion 2 of the parent bogie 1. ing. The flanged non-wheel 10 is mounted slightly inwardly from the flanged wheels 8, and is configured so as not to contact the traversing rail 6 on the parent truck 1. Note that the positional relationship between the two may be such that the flangeless wheel 10 does not come into contact with the traversing rail 6, and it may be an outer portion of the flanged wheel 8. The child truck 7 has a pinion 11 arranged on the parent truck 1 and a rack 1 attached to the side of the child truck 7.
2, and its power source is configured to utilize that for the parent truck 1. In the figure, reference numeral 15 denotes jacks arranged at each corner of the upper surface of the child truck 7.

Next, the operating state of the present invention will be explained. After the parent cart 1, which has been driven through the drive mechanism 4, stops at a predetermined position, when the drive mechanism of the child cart 7 is activated, the child cart 7 moves as shown in FIG. The front wheel, that is, the flangeless wheel 10 moves from the steel plate rail 13 on the parent bogie 1 to the wide cross rail 1 on the ground side.
3A, and the rear wheel of the child truck 7,
That is, the flanged wheels 8 sequentially roll on the traversing rails 6 of the parent truck 1. At this time, the flanges 8a are configured to lightly hold the sides of the traversing rail 6, so the sub-truck 7 accurately traverses on the traversing rail 6 without any movement, and when it reaches the stopping point, it is stopped by the operation of the limit switch. Stop rampant. However, at this point, the flanged wheel 8
is located at the front end of the traversing rail 6 of the parent truck 1, resulting in the state shown in FIG. 5, where products are loaded onto the pallet 9.

In addition, by providing a stopper 14 at the end of the wide crossing rail 13A, the limit of the lateral movement of the flanged wheels 8 of the child truck 7 can be restricted, and the rear part of the child truck 7 can be kept above the parent truck 1 at all times. Further, the child truck 7 can be easily moved backward by the above-mentioned reverse operation.

The number of wheels can be appropriately selected depending on the weight of the object to be transported, and the mounting position of the flangeless wheels can also be appropriately selected as long as it does not come into contact with the horizontal rail.

In addition, in the above-described embodiment, the parent truck is of a type with a low floor in the center, but the present invention is not necessarily limited to this, and other types may be used depending on the conditions of the loading and unloading area. It is possible, and it is also possible to use a method of towing by another vehicle without automatically controlling the driving of the parent truck and the lateral movement of the child truck.

That is, the pallet transport vehicle according to the present invention includes a parent vehicle equipped with a traversing rail laid on the floor in a direction perpendicular to the vehicle running direction, and a pallet carrier mounted on the parent vehicle and mounted on the side peak of the parent vehicle. and a sub-carriage that traverses towards the parent car, and the sub-carriage is provided with flangeless wheels that roll on the floor surface of the parent car at a front part of the traverse at a position that does not contact the traversal rails. In addition, the vehicle is characterized in that a flanged wheel that rolls on the traversing rail while being guided by the flange is provided at the rear part of the traverse, so that the child bogie can be correctly traversed on the traversing rail by the flanged wheels. can be done. Furthermore, since the front wheel of the child bogie has no flange, unlike conventional traversers, the front wheel rail can be made of a wide steel plate rail. Therefore, the accuracy of the stop position of the parent truck can be made very rough.
As a numerical example, this can be set to a tolerance range of approximately ±100 mm. As a result, the ease and convenience of rail joining operations can be achieved, and remote control through automatic operation is also facilitated, contributing to improved workability and labor savings. In addition, in the conveyance cart of the present invention, by separately providing a stopper, it is possible to prevent the flanged wheels of the child car from riding over the front end of the traversing rail, and to keep the rear part of the child car always above the parent car. Therefore, when reversing the child truck onto the parent truck, there is no need to reposition the child truck with respect to the parent truck each time, and it is sufficient to simply retreat the child truck as is. Therefore, not only is it extremely easy to return and mount the child truck onto the parent truck, but also damage and wear on the front end of the traversing rail can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a schematic plan view showing the transition state of the pallet conveying vehicle, FIG. 2 is a plan view of the pallet conveying vehicle, FIG. 3 is a front view thereof, and FIG. The same side view, FIG. 5, is a side view showing the child carriage in a traversing state. DESCRIPTION OF SYMBOLS 1... Parent truck, 2... Concave low floor, 3... Parent truck wheels, 4... Drive mechanism, 5... Running rail, 6...
...Transverse rail, 7...Subcarriage, 8...Wheel with flange, 8a...Flange, 9...Pallet, 10
...Flanged wheelless, 11...Pinion, 12...
...Rack, 13... Steel plate rail, 13a... Wide cross rail, 15... Jacket, 101, 104
...Empty pallet loading area position, 102...Product unloading position, 106...Product loading position.

Claims (1)

[Scope of utility model registration request] A main bogie equipped with a traversing rail laid on the floor along a direction perpendicular to the vehicle running direction, and a sub bogie mounted on the parent bogie and running sideways toward the side of the parent bogie. Moreover, the child truck is provided with a flangeless wheel that rolls on the floor surface of the parent truck at the front part of the traverse at a position that does not contact the traversing rail, and the child truck is provided with a flangeless wheel that rolls on the floor surface of the parent truck at the front part of the traverse, and is guided by the flange while the flangeless wheel rolls on the floor of the parent truck. A pallet transport vehicle characterized by being equipped with flanged wheels that roll on rails at the rear portion of the traverse.