JPH0123881Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is suitable for transporting articles that are longer than the cart, prevents rear-end collisions with subsequent carts, allows storage of the cart, and allows the cart to move along a predetermined route. This invention relates to a trolley conveyor that can be reliably guided.

Conventionally, as a trolley conveyor for conveying long objects, there are those described in Japanese Patent Publication No. 47-38391, Japanese Patent Publication No. 53-15272, and Japanese Patent Publication No. 53-15273.

In the device of Japanese Patent Publication No. 47-38391, a plurality of trolleys (four in the embodiment) are connected to each other by a towing bar 40 and are configured as a towing trolley unit. By increasing the number of trolleys according to the length of the conveyed object or by selecting the length of the towing bar, the total length of the pulling trolley unit can be made slightly larger than the length of the conveyed object, and it can be carried on a curved conveyance path. This also enables the following truck to stop and store without colliding with the preceding stopped truck, and also enables only the towing trolley unit to be separated from the truck and pulled into the towing trolley unit storage path.

Therefore, the total length of a towing trolley unit in which a plurality of trolleys are interconnected by a towing bar can be increased by increasing the number of trolleys or varying lengths depending on changes in the length of the long conveyed object. This method has the disadvantage that adjustment must be made by selecting and attaching the towing bar, and the unavoidable lengthening of the storage path when storing a towing trolley unit that is longer than the long conveyed object. have.

Next, the above-mentioned Special Publication No. 53-15272 and Special Publication No. 15272
In the one described in Japanese Patent No. 53-15273, the leading trolley 14 located at the front of the trolley and the rearmost trolley 15 located at the rear of the trolley are both directly connected to the trolley 7 via a spacing rod 12 with a universal joint. Since only the leading trolley 14 and the rearmost trolley 15 are guided in running within the rails 3, the direction of the bogie cannot be regulated without the rails 4 guiding the running of the bogie. Particularly when traveling on a curved route, the trolley deviates from the predetermined route trajectory due to centrifugal force, and the leading trolley 14 and the rear trolley 1
5 may be shortened and the rear-end collision prevention function may not be achieved. Also, if flanges are provided on the wheels to guide the running of the bogie, or if the rails are made into a channel, the distance between the bogie and The guide portion of the flange or channel becomes a hindrance in the provided switch rail portion, and furthermore, there is the inconvenience that the connecting pin must be removed and the spacing rod 12 must be removed when the truck is removed from the trolley and pulled out of the traveling route.

The present invention eliminates the above-mentioned drawbacks of the conventional one, and as explained below with reference to the drawings, a flexible wheel W is attached to each of the four corners of the long object carrier 1. Between the wheels, there is a U-shaped engagement member 2 that engages with a front trolley and a rear trolley, which will be described later.
2' are vertically provided, and guide rollers 3, 3' as shown in FIG. 5 are attached to the lower sides of the engaging members 2, 2' so as to be able to rise and fall only in the front and rear directions.

On the trolley running rail R, which has U-shaped rail openings facing each other in the running floor F of the trolley 1,
a front trolley unit comprising a front trolley 4 having a recess into which the engaging member 2 is removably inserted upward; and a leading trolley 6 connected to the trolley 4 via a universal joint with a spacing rod 5; A rear trolley 7 comprising a rear trolley 7 having a recess into which the engaging member 2' is removably inserted upward, and a rearmost trolley 8 connected to the trolley 7 via a universal joint with a spacing rod 5'. The unit and are guided by the route. and the guide roller 3,
3' is located between the opposite upper edges of the traveling rail R,
The carriage 1 is guided along the running rail R by coming into contact with the upper edge. The upper edge of the traveling rail R is in the same plane as the floor surface F of the truck.

A drive chain C is stretched below the trolley running rail R, and a carrier 9 having a known pusher P is attached to the chain C. A pusher plate 10 that engages with the pusher P is attached to the leading trolley 6. is vertically installed, and a pusher presser 11 is vertically installed on the rearmost trolley 8 to press down the pusher P to release the pusher P from engagement with the pusher plate.

In addition, when the trolley is on a route where paint and other dust are generated, such as on a painting line, a U-shaped barrier is installed to prevent paint and other dust from entering and adhering to the running rail R, carrier 9, drive chain C, etc. By erecting a cover plate 12 of a desired length on the trolley running floor surface F with an elastic piece E attached to its tip to seal the moving path of the vertical side of the mating member, the movement of the trolley, carrier, and chain is made smooth. , to ensure the raising and lowering operation of pushers.

Therefore, the chain C driven by the prime mover
When the front trolley 6 is pulled by the pusher P and the trolley 1 carrying the long object A is transported along the trolley running rail R, the front trolley 4
and the rear trolley 7 are the U-shaped engagement member 2,
The guide rollers 3 and 3' engage with the lower side of the trolley 2' to pull the trolley 1, and the guide rollers 3 and 3' come into contact with the opposite upper edge of the trolley running rail R to restrict horizontal swing of the trolley 1.
The already mentioned Special Publication No. 15272 and Special Publication No. 1973-
Compared to the one described in Publication No. 15273, the running floor surface F of the bogie
There is no need to restrict the movement path of the trolley itself by laying a shaped rail on top of the wheel or by providing a flange on the wheel that is guided by the shaped rail. Even if swivel wheels with treads that allow the trolley to run freely are installed, there is no risk that the trolley will deviate from the transport route on a curved transport route, etc., and the trolley can move along the predetermined transport route along the trolley running rail R. It is.

Moreover, since the engaging members 2 and 2' of the bogie are simply inserted into the recesses of the front trolley 4 and the rear trolley 7 so as to be able to be removed upwardly, the bogie 1, the front trolley unit, and the rear trolley unit are connected to each other. It is extremely simple and easy to attach and detach the trolley unit, and the front trolley unit and the rear trolley unit only have a length in front of the front end of the trolley and a length in the rear from the rear end of the trolley. , the length of the trolley unit is already stated
It can be significantly shortened compared to the one described in Publication No. 38391. Furthermore, the removal of the trolley unit from the truck is much simpler than that described in Japanese Patent Publication No. 53-15272 and Japanese Patent Publication No. 53-15273.

As is clear from the above explanation, the present invention is such that a front trolley unit consisting of a leading trolley and a front trolley is removably inserted into an engaging member hanging vertically from the front end of a trolley, and the rear trolley and rear trolley are Since the rear trolley unit consisting of a trolley is removably inserted into the engagement member vertically installed at the rear end of the trolley,
Even if the vertical distance between the trolley running floor and the trolley running rail increases or decreases, the increase or decrease in the distance is absorbed by moving up and down, ensuring smooth running of the trolley. There is only a rear trolley unit, and there is no connecting rod between the front trolley and the rear trolley.
Because the trolley units are connected by Since it has a trolley, the trolley that is towed and transported by the trolley can run not only on a straight transport route but also on a curved transport route without deviating from the predetermined transport route, so that the distance between the leading trolley and the rearmost trolley can be reduced. It does not shorten and does not impair the rear collision prevention function, and the lower part of each of the front engaging member and the rear engaging member that are vertically installed on the trolley is provided with an opposing edge of the opposing channel-shaped trolley running rail. Since a guide roller is provided between them and guided by the upper edge, the traveling direction of the truck is regulated by the guidance of the guide roller. There is no need for special configurations such as laying rails on the floor to guide the wheels of the truck or protruding flanges from the wheels. Therefore, even when guiding a trolley from the main transport route to a branch route, there is no need to provide any special structure on the floor for guiding the trolley itself, and the trolley from which the trolley unit has been removed does not need to be equipped with any guide rollers. By lying down in the front and back direction, it can run freely on the floor, so when it is not in use, the trolley can be moved to any location such as a storage location and the floor surface can be used widely and effectively. It is also possible to replenish where there is a shortage, allowing the trolley to operate efficiently. Furthermore, since the front and rear trolley units prevent the truck from swinging laterally, even if the truck attempts to run in the opposite direction, the free wheels rotate laterally to prevent the truck from moving in the opposite direction.

As mentioned above, the present invention shortens the length of the trolley unit compared to the conventional one, greatly reducing storage and storage area of the trolley unit, and eliminates the need for rails to guide the trolley itself. Even before,
The rear trolley unit suppresses the lateral vibration of the trolley and allows the trolley to be pulled and guided even on a curved route without leaving the designated transport route.For the trolley itself, which is not equipped with a trolley unit, the guide rollers are lowered in the front and back direction. The trolley unit can move freely on the floor surface, and the vertical movement between the trolley unit and the trolley is extremely easy, so even if there is an increase or decrease in the vertical distance between the trolley running floor surface and the trolley running rail surface, this It is possible to absorb this and ensure smooth running of the cart, and it is possible to significantly improve the efficiency of conveyance work by the cart conveyor.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view showing the engagement relationship between the cart and the trolley unit, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a plan view of FIG. 1. Fig. 4 is a front view of another embodiment of the pusher with a part of the trolley unit omitted, and Fig. 5 is an enlarged front view of the main parts showing the loading state of the front trolley unit and the front engaging member of the truck. be. 1... Trolley, 2... Front engaging member, 2'... Rear engaging member, 4... Front trolley, 5, 5'...
Spacing rod, 6... Lead trolley, 7... Rear trolley, 8... Rear trolley, 10... Pusher plate, 11... Pusher presser, C... Drive chain, P... Pusher, R... Trolley running rail.

Claims (1)

[Scope of utility model registration request] A leading trolley having a pusher plate that engages with a pusher of a drive chain, and a front engaging member of a long object conveying cart connected to the leading trolley via a universal joint with a spacing rod and detachably mounted on the leading trolley. a front trolley having a recess into which the rear engaging member of the trolley is inserted; a rear trolley having a recess into which the rear engaging member of the trolley is removably inserted; a rearmost trolley having a pusher presser for pressing down a pusher of the chain to a non-engaging position with the pusher plate; a trolley running rail on which the leading trolley, front trolley, rear trolley, and rearmost trolley run; A guide roller is provided at the lower part of each of the front engaging member and the rear engaging member of the trolley, and is capable of raising and lowering only in the front-back direction and is located between the opposing upper edges of the trolley running rail. A trolley conveyor characterized by: