JPS59163230A - Heavy cargo carrying device - Google Patents

Abstract

PURPOSE:To carry the heavy cargo safely and easily by a method wherein the heavy cargo on an air pressure levitating type cargo bed is pulled and slid on a given path set on the flat floor surface in a factory utilizing a self-propelled carriage for pulling light weight cargo. CONSTITUTION:The advancing self-propelled carriage 1 and the retreating self- propelled carriage 2 are provided with driving wheels 5, driven by built-in batteries 14, and steering wheels 6, controlled by an optical automatic steering control means. The optical automatic steering control means controls the steering by reading optically a reading line provided on the floor surface 4 along the running path of the carriage. When the cargo 16 on the cargo bed 3 is carried, a blower 10 is operated to supply pressure air to a predetermined place of the cargo bed 3 through a flexible tube 11 and the cargo is slid along the given path by operating the advancing self-propelled carriage 1, for example, and the cargo bed 3 is pulled together with the retreating self-propelled carriage 2 under a condition that the cargo bed 3 is floated from the floor surface 4 by the pressure air.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes a conventional self-propelled cart, which is unsuitable for transporting heavy objects, to transport heavy objects along a fixed route set on a flat floor in a factory, for example. The purpose of the present invention is to provide a heavy object transport device that can safely transport heavy objects.

Conventionally, cranes were commonly used to transport heavy objects of, for example, 5 to 10 tons within a factory, but the need to increase the strength of the building led to high building costs and This had the disadvantage of increasing the cost of air conditioning equipment in the factory and its maintenance costs due to the increased height of the beams. It was also very dangerous. To overcome these drawbacks, electric trolleys are increasingly being used instead of cranes, but the guide rails laid on the floor get in the way, making it difficult to use the floor efficiently. There are many problems, such as not only the distance, but also the lack of freedom in movements such as changing direction.

The present invention provides a heavy object conveying device that can solve the above-mentioned problems, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

In FIGS. 1 and 2, 1 is a forward self-propelled truck, 2 is a reverse self-propelled truck, and 6 is a pneumatically floating cargo platform. The forward self-propelled trolleys 1 and 2 are conventionally well-known vehicles capable of automatically traveling along a fixed route set on the floor surface 4 without guide rails, and have drive wheels 5 driven by a built-in battery;
Optical automatic Ti that performs steering control by optically reading a follow-up line provided along the travel route on the floor surface 4
The steering wheel 6 is automatically steered by a control means.

The pneumatically floating loading platform 6 is provided with a connecting means 8 that allows relative horizontal rocking around a vertical axis 70 and allows the loading platform 6 to be moved slightly up and down relative to the floor surface. ? A flexible tube 11 is connected between the forward self-propelled vehicles 1 and 2 via a
The pressurized air supplied through the platform is blown out towards the bottom of the loading platform or towards the floor 4, thereby forming a thin air layer between it and the floor 4. It can surface. The pneumatic levitation system itself for this loading platform
Since it is the same as the conventional air bullet (also known as the conventional air bullet), illustrations and detailed explanations will be omitted.
-ru. 12 is a conveyor for transferring loads in the left and right directions provided on the loading platform 6, - its driving motor 1;
It is driven by electric power supplied from the Note IJ-14 mounted on the self-propelled trolley 2 via a cable 15 that can be connected and detached at will.

According to the above configuration, when a heavy load 16 is transferred onto the loading platform 6 and is transported along a fixed path, the blower 10 is operated to blow pressurized air through the flexible tube 11 to the loading platform. 60 is supplied to the required locations, and with the loading platform 6 raised slightly above the floor surface 4 by the duty air pressure, the self-propelled trolley on the moving direction side, for example, the self-propelled trolley 1 for forward movement, is operated, and this self-propelled By automatically driving the cart 1 along a preset travel route, the platform 6 carrying the load 16 is pulled by the self-propelled cart 1 and slides along a fixed path on the floor 4. become. At this time, the self-propelled truck 2 for reversing is also towed together with the loading platform 6. When moving the cargo platform 6 in the reverse direction, the self-propelled trolley 1 for forward movement is replaced by the self-propelled trolley 2 for forward movement.
All you have to do is run it. Loading and unloading of the cargo 16 onto and from one cargo platform can be performed by driving the conveyor 12.
At this time, the loading platform 6 can be grounded without being lifted up by air pressure, and the loading platform 6 can be safely carried out in a stable state with the loading platform 6 fixed to the floor surface 4.

As shown in FIG. 3, the vertical shafts 7 of the connecting means 8 and 9 are provided protrudingly on the rear ends of the front and rear self-propelled carts 1.
By configuring so that the front and rear ends of the carrier overlap with the ends of the self-propelled carts 1 and 2, it is possible to shorten the length of the device as a whole while allowing the loading platform 6 to have the necessary length in the front and rear direction. . Further, when the transport direction is limited to the forward direction, one of the self-propelled carts 2 can be omitted, but when the self-propelled carts 1 and 2 are connected to the front and rear of the loading platform 6 as in the embodiment, Not only can the loading platform 6 be safely and reliably moved along a fixed path even in the case of front-to-back canal drift, but the self-propelled cart on the rear side can easily rise above the floor surface 4 and swing from side to side due to air pressure. Helps keep the loading platform oriented in the direction of movement,
Improves safety. Furthermore, when carrying out the present invention, it is desirable to lay an iron plate on the floor surface 4 in order to satisfy the finishing accuracy and smoothness of the floor surface 4. Therefore, it is difficult to employ a magnetic method as an automatic steering control method for the self-propelled carts 1 and 2. In this regard, as explained above, self-propelled carts 1 and 2 are automatically steered by an optical automatic steering control method.
It is preferable to use

The heavy object transport device of the present invention can be implemented as described above, and includes a self-propelled towing vehicle that automatically travels along a fixed path on a small surface without a guide rail, and a self-propelled towing vehicle that is connected to the self-propelled vehicle and that is connected to the floor. It consists of a pneumatically floating loading platform that floats above the floor by air pressure blown onto the surface, so even if a heavy object is loaded on the loading platform, an air layer is formed between it and the floor.
Its traction resistance is extremely small, making it suitable for heavy load IM.
It is possible to reliably transport heavy objects by utilizing conventional self-propelled carts for transporting light objects, which are unsuitable for transportation. Furthermore, unlike when the wheels are pivotally supported on the loading platform, a large load does not concentrate on the wheel grounding portion of the floor surface, and reinforcement work for the floor surface of the building is unnecessary or inexpensive. Of course, it can also be carried out in buildings with low beams, and since guide rails are not required, the floor surface can be used efficiently.

[Brief explanation of the drawing]

FIG. 1 is a side view, FIG. 2 is a plan view, and FIG. 3 is a side view showing another embodiment.

Claims (1)

[Claims] ■ A self-propelled towing trolley that automatically travels along a fixed path on the floor without guide rails, and a pneumatic levitation device that is connected to this self-propelled trolley and floats off the floor using air pressure blown out onto the floor. A heavy object transport device consisting of a loading platform. ■The device according to item 0, wherein the self-propelled towing trolley includes a forward self-propelled trolley at the front of the pneumatic floating platform and a reverse self-propelled trolley at the rear of the cargo platform. .