JP3699590B2 - Friction drive type transport pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transport pallet that transports heavy objects such as a stack of iron plates along a travel path such as a rail, and is capable of traveling by contacting a friction drive device installed along the travel path. About.
[0002]
[Prior art]
Conventionally, as shown in Japanese Utility Model Laid-Open No. 6-59328, a conveyance pallet is conveyed by a friction drive roller type device. FIG. 4 shows an example of such a transport pallet. FIG. 4A is a bottom view showing the drive mechanism of the transport pallet, and FIG. 4B is a side view.
[0003]
The friction drive roller type device includes a transport pallet 11, a sandwiched plate 12 fixed to the lower surface of the transport pallet, a friction drive roller 13 including a drive tire sandwiching the sandwiched plate 12, a guide rail 14 for guiding the sandwiched plate 12, The belt mechanism 16 transmits the rotational force of the driving means 15 such as an electric motor and the driving device 15 to the friction driving roller 13.
[0004]
In transporting the transport pallet 11 shown in FIG. 4, the friction drive roller 13 contacts both sides of the sandwiched plate 12, and the rotational force generated by the drive device 15 is transmitted to the friction drive roller 13 via the belt mechanism 16. Is done. Accordingly, the transport pallet 11 moves in a predetermined direction along the guide rail 14 by the driving force transmitted from the friction driving roller 13.
[0005]
[Problems to be solved by the invention]
However, in the above-described prior art, there is a case where it is difficult to smoothly transport the transport pallet due to slip generated between the sandwiched plate and the friction drive roller.
[0006]
Thus, a method has been proposed in which a large number of small diameter round bars are fixed to the contact surface of the conveying pallet with the friction drive device by welding or the like at right angles to the traveling direction of the conveying pallet.
[0007]
Although this method is effective in suppressing slip between the transport pallet and the friction drive device, a large number of round bars are arranged parallel to the contact surface with the friction drive device and at an equal distance for each transport pallet. There is a problem that it takes a lot of time and labor to manufacture a large number of transport pallets because it takes a lot of time to cut the round bar and fix it to the contact surface.
[0008]
Further, when the round bar is fixed to the contact surface with the friction drive device by welding, there is a possibility that the round bar may be detached from the contact surface due to the frictional force of the drive device. is there.
[0009]
It is an object of the present invention to provide a new transport pallet capable of transporting an object to be transported without causing a slip with a friction drive device by a simple structure that does not require installation of a large number of round bars or the like. .
[0010]
[Means for Solving the Problems]
In the present invention, it was provided with a driven wheel that travels on a rail disposed at the lower part of the transport pallet, and a plate on which a plurality of concave and convex portions that come into contact with a drive tire disposed along the transport path of the transport pallet were formed. The problem was solved by a friction-driven transport pallet characterized by
[0011]
Moreover, it is preferable that the said uneven | corrugated | grooved part is a wave shape extended to the full width of the said plate perpendicular | vertical to the advancing direction of a conveyance pallet.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, a plate having unevenness mounted on the lower surface of the transport pallet is arranged below the transport pallet by arranging one or more friction drive type transport pallet drive means made of rubber drive tires along the traveling direction. By making contact with the drive tire, the driving force is transmitted to the transport pallet, and the transport pallet is caused to travel along the rail.
[0013]
In the present invention, as a slip prevention, the driving force from the driving tire is transmitted to the transport pallet through the plate pressed into the unevenness, so that the round bar unit is cut as in the prior art.・ There is no welding. Further, since the plate can be attached to the conveying pallet simply by welding or screwing around the plate, the attaching process is simple, and the manufacturing time of the conveying pallet can be greatly shortened.
[0014]
And since the said unevenness | corrugation is integrally formed in plate itself, generation | occurrence | production of the slip by the detachment | leave of a convex part can be prevented compared with the case where a convex part is separately attached to a plate.
[0015]
【Example】
Hereinafter, the present invention will be described with reference to examples.
[0016]
FIG. 1 is a diagram showing an overall outline of a transport pallet according to the present invention. FIG. 1 (a) is a side view of the transport pallet and FIG. 1 (b) is a front view.
[0017]
In the present embodiment, the transport pallet 1 travels on two rails 9 by driven wheels 10, and a plurality of rubber drive tires 7 and their drive devices 5 are disposed as transport pallet driving means in the middle of each rail 9. Has been. In addition, in order to convey the conveyance pallet 1 continuously and reliably, it is preferable to make the arrangement | positioning space | interval of the drive tire 7 and the drive device 5 shorter than the length of the conveyance pallet 1. FIG.
[0018]
On the other hand, a concave / convex plate 8 is attached to the center of the lower surface of the transport pallet 1 facing the drive tire 7 along the direction of travel of the transport pallet 1 with the concave / convex surface facing the drive tire 7. 7, the driving force from the driving device 5 is transmitted to the transport pallet 1 through the driving tire 7 and the uneven plate 8. Driven wheels 10 that run on the rail 9 are attached to the lower surfaces of both ends of the transport pallet 1 to support and guide the transport pallet 1 on the rail 9.
[0019]
FIG. 2 is a perspective view of the concavo-convex plate. The concavo-convex plate 8 is integrally formed with a large number of corrugated undulations. In order to prevent slipping, it is preferable that the unevenness has a wave shape that is perpendicular to the traveling direction of the transport pallet 1 and extends over the entire width of the uneven plate 8.
[0020]
As the material of the concavo-convex plate 8, it is possible to appropriately use a high-strength structural material such as a plastic composite material such as ceramic or FRP in addition to a known metal material such as steel or stainless steel.
[0021]
The height and interval of the unevenness of the uneven plate 8 is not particularly limited as long as the driving force from the drive tire 7 can be reliably transmitted to the transport pallet 1 without causing a slip. It is necessary to provide a concave and convex shape having a period and a height such that the convex portion comes into contact with the outer peripheral surface of the drive tire 7 at least two places when contacting the plate 8. Here, “height” refers to the distance between the innermost part of the concave part and the tip part of the convex part.
[0022]
The concavo-convex of the concavo-convex plate 8 is preferably press-molded from the viewpoints of concavo-convex integrity, ease of manufacture, cost, and the like.
[0023]
Hereinafter, the traveling method of the conveyance pallet 1 will be described.
[0024]
FIG. 3 is a side view for showing a traveling state of a plurality of transport pallets. A plurality of drive tires 7 and their drive devices 5 are installed along the rails 9 at an appropriate pitch equal to or shorter than the transport pallet length. In this state, when the driving device 5 is driven and rotated while the driving tire 7 is in contact with the concavo-convex plate 4 attached to the lower surface of the conveying pallet 1, driving force is transmitted to the main body of the conveying pallet 1 and along the rail 9. Start moving. At this time, by setting the outer peripheral surface of the drive tire 7 at a position several millimeters higher than the convex portion of the uneven conveyance pallet 8, by transmitting the driving force while biting the outer peripheral surface into the convex portion when driving the drive tire 7, A stable conveyance pallet 1 can be conveyed without slipping.
[0025]
In actual traveling, only the drive tire 7 in contact with the concavo-convex plate 8 of the transport pallet 1 needs to be rotationally driven. The approach of the transport pallet 1 is detected and the drive tire 7 is sequentially rotated, while the transport pallet By detecting the separation of 1 and stopping the rotation of the drive tire 7, it is possible to convey an arbitrary distance and reduce the load on the drive device 5.
[0026]
When the transport pallet 1 approaches the destination, the rotational speed of the drive tire 7 that is in contact with the concave and convex plate 8 of the transport pallet 1 is gradually reduced, so that the transport pallet 3 that is running is moved to a desired location. Can be stopped.
[0027]
【The invention's effect】
Since the driving force from the driving tire is transmitted to the transport pallet via the plate having the uneven shape, the manufacture of the transport pallet is easier than a type using individual members for preventing slip such as a round bar. . Further, since the plate can be attached to the conveying pallet simply by welding or screwing around the plate, the attaching process is simple, and the manufacturing time of the conveying pallet can be greatly shortened.
[0028]
And since the said unevenness | corrugation is integrally formed in the plate itself, compared with the case where the individual member for anti-slip | skid was attached to the plate individually, generation | occurrence | production of the slip by separation | slipping of this anti-slip member, and individual It is possible to prevent problems such as skewing of the conveying pallet due to variations in the mounting accuracy of the pallet.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall outline of a transport pallet according to the present invention.
FIG. 2 is a perspective view of an uneven plate.
FIG. 3 is a side view illustrating a traveling state of a plurality of conveyance pallets.
FIG. 4 is a diagram showing an example of a conventional transport pallet.
[Explanation of symbols]
l Carrying pallet 10 Drive wheel 2 Nipped plate 11 Carrying pallet 3 Friction driving roller 12 Nipped plate 4 Guide rail 13 Friction driving roller 5 Driving means 14 Guide rail 6 Belt mechanism 15 Driving means 7 Driving tire 16 Belt mechanism 8 Concavity and convexity plate 9 rail

Claims (2)

Friction drive type characterized in that it comprises a driven wheel that travels on a rail at the bottom of the transport pallet and a plate on which a plurality of concave and convex portions that come into contact with a drive tire arranged along the transport path of the transport pallet are formed. Transport pallet. 2. The friction-driven transport pallet according to claim 1, wherein the uneven portion has a wave shape extending perpendicularly to the traveling direction of the transport pallet and extending over the entire width of the plate.

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