JPH0349849B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a load transfer device for a guided vehicle that can conveniently transfer a load onto a vehicle body and has a simple configuration that can be suitably used in an unmanned transportation system.

[Conventional technology]

For example, in an unmanned conveyance system, in order to transfer a load to a conveyance vehicle, conventionally, a roller conveyor consisting of drive rollers arranged side by side on the conveyance vehicle and a support such as a station, or a conveyor or support A transfer device equipped with a fork to lift the cargo was attached to the platform.

[Problem that the invention seeks to solve]

However, when using a drive-type roller conveyor, the transport vehicle has a small amount of free space, making it difficult to install a driving tool to drive the roller conveyor, and requiring a roller conveyor to be installed at each station. There are disadvantages in that the device and its wiring are complicated, and further disadvantages include the need to increase the accuracy of the stop position of the transport vehicle in order to align the roller conveyor.

Further, a transfer device equipped with a fork has a problem in that operations such as lifting and transferring a load are complicated, and the cost of the device increases.

The present invention is based on the use of an extendable and retractable arm body that rotates in a horizontal plane on a transport vehicle, which simplifies the configuration and enables reliable transfer of cargo.
The object of the present invention is to provide a load transfer device for a transport vehicle that can also simplify the structure of the station.

[Means for solving problems]

Hereinafter, one embodiment of the means of the present invention capable of achieving the above-mentioned objects and solving the problems will be described with reference to the drawings.

In the figure, the load transfer device 1 of the transport vehicle has a load 2
An arm body 7 having a movable piece 6 at the tip is attached to the vehicle body 5 of the conveyance vehicle 4 which can be stopped on a support platform 3 on which a vehicle is placed, and a guide surface 10 is set up on the carry-in path 9 on the upper surface of the vehicle body 5. In this embodiment, the vehicle body 5
The transport vehicle 4 is equipped with two arm bodies 7, 7 and a carry-in path 9, 9, and is used as a transport vehicle in an unmanned transport system.

The support stand 3 is made by applying appropriate processing to the cargo,
This is a station for transferring cargo 2 to or receiving cargo 2 from the transport vehicle 4, and is disposed at an appropriate position on the line of the unmanned transport system.

In this example, the cargo 2 is a cylindrical body in which wires, strips, etc. are wound around a bobbin having a hole 21 in the center, and is in contact with the side surface of the support base 3 and separated by partition plates 22. Two cargoes 2, 2 are placed.

The transport vehicle 4 has a driving wheel 24 mounted at the center of the lower surface of the vehicle body 5.
and equipped with turning guide wheels 25 at the four corners,
Further, bumpers 26, 26 are provided before and after the bumpers.

Further, the vehicle body 5 has protrusions 29, 29 extending over the entire width of the vehicle body 5 at its front and rear ends, and at the center of the vehicle body 5, there is provided the loading path 9 using a roller conveyor having free rollers arranged in parallel. , 9 are arranged in parallel across the vehicle body 5.

The loading path 9 is wider than the entire width of the cargo 2, and guides 30, 31, 31 rising from the conveying surface of the loading path 9 are provided at right angles to the vehicle body 5 at the center and on both sides. There is.

Note that the surface of the guide tool 30 facing the carry-in path 9 forms the guide surface 10 . . . , and the guide surface 1
Introductory portions 32, which are bent outward, are formed at both ends of the 0.

The arm body 7 is pivotally supported by a strut 33 that is unevenly located on one side of the raised portion 29 and on the side where the vehicle body 5 is placed sideways on the support base 3 .

The arm body 7 has rods 39, 39 fitted into horizontal and parallel cylinders 37, 37, respectively, which are screwed into a base 36 at the upper end of a vertical support shaft 35, which is pivotally supported by the support column 33. The arm body 7 can expand and contract with the back and forth movement.

Further, the ends of the rods 39, 39 are screwed onto the support frame 41.

Further, the rod 39 has a step 43 inside the cylindrical body 37, and a spring 45 is inserted between the step 43 and the back surface of the base 36, so that the spring 45 moves the rod 39 to the step 43. is the locking surface 4 at the front end of the cylinder 37
6, and is biased in the direction of extension.
Note that the rod 39 protrudes from the rear end of the base portion 36.

The base 36 also has the support shaft 3 on its lower surface.
A gear 51 is provided which is concentric with the gear 5 provided on the output shaft of the reduction motor M on the raised portion 29.
meshes with 2. Therefore, the arm body 7 rotates in a horizontal plane due to the rotation of the reduction motor M.

Due to the rotation, when the carrier 4 is placed next to the support stand 3, the center of the support frame 41 is aligned with the approximate center of the cargo 2 on the support stand 3 and the other side of the carry-in path 9 of the vehicle body 5. It is possible to rotate between the support stand 3 and the vehicle body 5 to a position in the vicinity of .

On the upper surface of the support frame 41, an extendable member 54 having a movable piece 6 such as an air cylinder, a hydraulic cylinder, a solenoid, etc. that can move forward and backward is disposed on the upper surface thereof.

In this embodiment, the extendable member 54 is an air cylinder, and the movable piece 6, which is a rod thereof, is attached facing downward. Further, a spring 56 is interposed between the movable piece 6 and the upper surface of the support frame 41 and a bulge 55 formed inside the support frame 41, thereby urging the movable piece 6 downward.

Further, in this embodiment, a guide roller 57 using a ball bearing is attached to the movable piece 6. In addition, extendable tool 5
4 can lower the movable piece 6 by extending it, and by lowering the guide roller 57, the guide roller 57 can move into the hole 2.
1.

The transport vehicle 4 has a pick-up coil that detects a guide wire buried in the floor surface, and uses its output to cause the vehicle body 5 to travel along the guide wire and stop next to it on a predetermined support stand 3. Load the control device that will Note that when the vehicle is stopped, the vehicle can be stopped so that the partition plate 22 on the support base 3 and the guide tools 30, 31 are aligned substantially in a straight line. Also, due to the parking, the arm body 7 is in its extended state, and the movable piece 6
is positioned over the hole 21 of the cargo 2.

In this state, the extendable tool 54 is extended to allow the guide roller 57 of the movable piece 6 to enter the hole 21, and the arm body 7 is rotated toward the vehicle body 5. The guide roller 57 can transfer the cargo 2 into the carry-in path 9 while locking the inner surface of the hole 21 by rotating the arm body 7 . Further, when the cargo 2 is transferred into the carry-in path 9, the outer peripheral edge of the cargo 2 comes into contact with the guide surface 10 of the guide tool 30, and the cargo 2 is guided. Further, since the guide surface 10 is provided in a direction that crosses the vehicle body 5 at right angles, when the arm body 7 is in a direction perpendicular to the carry-in path 9, the guide surface 10 guides the arm body 7 through the cargo 2 and the movable piece 6. Reduce the size as shown in Figure 3. Further, when the arm body 7 passes through a position perpendicular to the carry-in passage 9, the arm body 7 can be gradually extended and advanced to a stopper 11 provided in the carry-in passage 9.

[Effect]

In this way, the conveyance vehicle 4 is placed sideways on the support stand 3, and the arm body 7 is placed sideways on the support stand 3.
can be rotated by rotation of the reduction motor M until the movable piece 6 is positioned above the hole 21 of the cargo 2. Further, with the guide roller 57 of the movable piece 6 entering the hole 21 due to the extension of the extendable member 54, the load 2 is transferred to the carry-in path 9 by rotating the arm body 7 toward the vehicle body 5. Further, the guide surface 10 of the carry-in path 9 guides the outer peripheral edge of the cargo 2 while expanding and contracting the arm body 7 as described above, and the stopper 11
You can move up to

The transport vehicle 4 on which the cargo 2 is placed can be moved to the next support table 3 and supplied to the support table 3 by reversing the arm body 7.
By reducing the size and pulling up the movable piece 6, and then returning the arm body 7, the cargo 2 can be transferred to the next support table 3 again.

In addition, in the load transfer device 1 for a carrier vehicle according to the present invention, the load 2 can be not only a cylinder but also a rectangular parallelepiped, and the movable piece 6 abuts the circumferential surface of the load 2 and pushes the load 2 from behind. 2 can also be moved.
Note that in that case, for example, a flat plate body may be used instead of the guide roller 57. Furthermore, the device of the present invention can be modified in various ways, such as by providing the entry path 9 at both ends of the vehicle body and disposing the arm body 7 in the center of the vehicle body, or by using only one arm body 7.

〔Effect of the invention〕

In this way, the transport vehicle load transfer device of the present invention has the following features:
The basic idea is to provide a carry-in path and an arm that expands and contracts and rotates in a horizontal plane on the top of a transport vehicle that can be stopped on a support platform.The load can be transferred only by the arm on the transport vehicle, and conventional drive rollers are used. Compared to those using a roller conveyor or a transfer device equipped with forks, the structure can be simplified, wiring and control devices for each station can be omitted, and construction work can be made more efficient. Furthermore, by widening the carry-in path, many effects can be achieved, such as being able to transfer cargo reliably and efficiently even when the transport vehicle stops with relatively poor precision.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is a plan view thereof, and FIG. 3 is a sectional view schematically showing the main parts thereof. 2...Load, 3...Support stand, 4...Transportation vehicle, 5
...Vehicle body, 6...Movable piece, 7...Arm body, 9...
... Loading path, 10... Guide surface, 11... Stopper.

Claims (1)

[Claims] 1. On the upper surface of the vehicle body of a transport vehicle that can be stopped on a support platform on which a load is placed, there is provided an extendable and retractable device that can be rotated in a substantially horizontal plane between the support platform and the vehicle body, and is biased in the direction of extension by a spring. While pivoting the arm body, the tip of the arm body can be raised and lowered, and when the arm body is lowered, it can lock the load on the support base, and when the arm body rotates, the load can be transferred to the loading path on the vehicle body. A load transfer device for a transport vehicle, in which a movable piece is attached, and a guide surface is raised in the carry-in path for guiding the outer periphery of the load to be transferred and extending and contracting the arm body via the movable piece.