JPH0537629U - Unmanned vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to transfer the load on the conveyor section to a fixed conveyor in any horizontal direction without moving the vehicle body of the automated guided vehicle. [Structure] In an unmanned vehicle, a turntable 30
Is provided on the vehicle body 20 so as to be horizontally rotatable about a rotation shaft 31. This turntable 30 has a gear 34
The rotation of the drive motor 24 transmitted via the pinion gear 25 causes the rotation of the drive motor 24 in the horizontal direction. A roller conveyor 32 is provided on the upper surface of the turntable 30 and is movable with the load 17 placed thereon.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an unmanned vehicle that conveys a load, for example, in an automated warehouse.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, there is an unmanned traveling vehicle in which a roller conveyor unit that rotates a roller while moving a load on the roller and moves the roller horizontally is provided on the upper surface of the vehicle body. An unmanned vehicle like this travels along a guideline laid on the floor of the warehouse with a load placed on the roller conveyor, and the roller conveyor continues to the fixed conveyor of the warehouse. Stop and transfer the load to the fixed conveyor.

[0003]

[Problems to be solved by the device]

 In the conventional unmanned vehicle described above, when transferring a load, it is necessary to orient the unmanned vehicle in a direction in which the roller conveyor unit is in a continuous state with the fixed conveyor. Therefore, when trying to transfer a load to a plurality of fixed conveyors extending in different directions, it is necessary to lay a plurality of guidelines according to the extending direction of each fixed conveyor. Although it is possible to transfer loads to each fixed conveyor by laying multiple guidelines, the layout of the guidelines becomes complicated, and it takes a lot of time to replace unmanned vehicles. An object of the present invention is to provide an unmanned vehicle capable of moving articles in any horizontal direction without moving the vehicle body.

[0004]

[Means for Solving the Problems]

 An unmanned vehicle according to the present invention is characterized by comprising a turntable rotatably provided in a vehicle body in a horizontal direction and a conveyor portion provided on the turntable and horizontally moving an article. There is.

[0005]

Embodiments The present invention will be described below with reference to illustrated embodiments. FIG. 3 is a diagram showing a cargo transport system of an automated warehouse to which an unmanned vehicle according to an embodiment of the present invention is applied. In this figure, an unmanned vehicle travels along a guideline 23 laid on the floor of a warehouse by the rotation of a drive wheel 21 and a driven wheel 22 provided on a vehicle body 20, and a loading station 10 of a storage shelf The load 17 is transported between the stations 11, the delivery station 12, and the loading / unloading station 13. The loading / unloading station 13 is composed of three fixed conveyors 14, 15, 16 extending in three different directions on the floor of the warehouse. Among these fixed conveyors, the fixed conveyer 14 is arranged at the end of the guideline 23 along the extending direction of the guideline 23, and the other fixed conveyers 15 and 16 form a right angle with the guideline 23 on both sides with the guideline 23 interposed therebetween. So as to face each other.

In the unmanned vehicle, as shown in FIGS. 1 and 2, a turntable 30 is provided on the vehicle body 20 so as to be horizontally rotatable about a rotation shaft 31. The turntable 30 is horizontally rotated by the rotation of the drive motor 24 transmitted through the gear 34 and the pinion gear 25 with the guide roller 37 rotatably provided on the lower surface being in contact with the upper surface of the vehicle body 20. Is rotated in the direction. The gear 34 is fixed to the center of the lower surface of the turntable 30 and meshes with the pinion gear 25. The drive motor 24 is fixed to the upper surface of the vehicle body 20, and the pinion gear 25 is fixed to the rotating shaft.

A roller conveyor 32 on which the load 17 can be placed is provided on the upper surface of the turntable 30. The roller conveyor 32 rotatably supports a large number of rollers in the same direction, and these rollers are rotationally driven by a drive mechanism (not shown) to move the load 17. Pin insertion holes 38 are provided at four locations on the lower surface of the turntable 30 slightly inside the peripheral edge portion. These pin insertion holes 38 are arranged so that the line connecting the center of rotation of the turntable 30 and each hole forms 90 degrees. The positioning pin 26 can be fitted into the pin insertion hole 38. The positioning pin 26 is configured to be able to project upward by a hydraulic cylinder 27 provided on the upper surface of the vehicle body 20, and is projected upward and fitted into the pin insertion hole 38 when the unmanned vehicle travels.

Bumpers 28 are provided on the front and rear sides of the vehicle body 20 of the unmanned vehicle in the traveling direction.

The operation of this embodiment will be described. When the load 17 is transported to the three fixed conveyors 14, 15, 16 of the loading / unloading station 13, the unmanned vehicle follows the guideline 23 with the load 17 placed on the rollers of the roller conveyor 32. To run. At this time, the positioning pin 26 is projected upward by the hydraulic cylinder 27 and fitted into the pin insertion hole 38, whereby the turntable 30 is prevented from being inadvertently rotated due to vibration during traveling. ing.

When the unmanned traveling vehicle reaches the vicinity of the loading / unloading station 13, the stationary conveyor 14 stops the roller conveyor 32 in a continuous state. In this state, each roller of the roller conveyor 32 is rotated and the load 17 is transferred to the fixed conveyor 14.

Next, after the positioning pin 26 is lowered by the hydraulic cylinder 27 and pulled out from the pin insertion hole 38, the drive motor 24 is rotated to rotate the turntable 30 by 90 degrees in the horizontal direction. Then, with both ends of the roller conveyor 32 being continuous with the fixed conveyors 15 and 16, the rollers of the roller conveyor 32 are sequentially rotated bidirectionally, and the load 17 is transferred onto the fixed conveyors 15 and 16.

As described above, according to the above-described embodiment, by rotating the turntable 30, the fixed conveyors 14, 15, 16 extending in different horizontal directions are fixed to the roller conveyors 32 without moving the vehicle body 20. The upper load 17 can be transferred, which reduces the distance traveled by the unmanned vehicle, simplifies the layout of the guideline 23, and shortens the working time. Also, due to the reduction of the travel distance of the unmanned vehicle, it is possible to extend the life of the charge cycle of the driving drive battery of the unmanned vehicle and the wheel tires.

Although the turntable 30 is formed in a circular shape in a plan view in the above embodiment, it may be formed in a square shape in a plan view.

[0014]

[Effect of the device]

 As described above, according to the present invention, an article can be moved in any horizontal direction without moving the vehicle body.

[Brief description of drawings]

FIG. 1 is a front view showing an unmanned vehicle according to an embodiment of the present invention.

FIG. 2 is a plan view of the unmanned vehicle of FIG.

FIG. 3 is a diagram showing a load transfer system of an automatic warehouse to which the unmanned vehicle of FIG. 1 is applied.

[Explanation of symbols]

 17 cargo (article) 20 vehicle body 30 turntable 32 roller conveyor (conveyor section)

Claims (1)

[Scope of utility model registration request] 1. A turntable provided on a vehicle body so as to be horizontally rotatable, and a turntable provided on the turntable.
An unmanned vehicle, comprising: a conveyor unit that horizontally moves an article.