JPH0115566Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a monorail transport system that can fold up the transport platform to reduce the cross-sectional area of the space that must be secured as the transport path for the transport device when the transport system does not use the transport platform. It provides equipment.

Hereinafter, an embodiment of the present invention will be described based on the attached illustrative drawings. 1 is a loading platform usage path, 2 is a loading platform storage return path provided below the loading platform usage path 1, and 3a is a loading platform usage path. 1 is a guide rail provided, 3b is a guide rail provided on the loading platform storage return path 2, 4a and 4b are lifting guide rails, 5
is a transport device. This conveyance device 5 includes a self-propelled cart 6 that runs on one side of the guide rails 3a and 3b.
and the free truck 7, and the guide rails 3a, 3
The loading platform 9 is supported by the carts 6 and 7 in a cantilevered manner via a support member 8 so as to be located on the opposite side of the cart 6 and 7 with respect to b. The self-propelled trolley 6 has guide rails 3a and 3b.
A drive wheel 11 that fits into the upper end portion 10, a motor 12 that drives the drive wheel, and guide rails 3a and 3b.
The free truck 7 is provided with vertical shaft rollers 14 for steady rest that sandwich the lower end portion 13 of the guide rail from both left and right sides, and the free trolley 7 has an idler wheel 15 that fits into the upper end portion 10 of the guide rail.
Also provided are vertical shaft rollers 16 for steadying, which sandwich the lower end portion 13 of the guide rail from both left and right sides. Of course, an idler wheel may be pivotally supported at the position of the drive wheel 11, and the drive wheel 11 may be in pressure contact with the side surface or lower end surface of the guide rails 3a, 3b.
The idle wheel 15 can also be a motor-driven drive wheel. The motor 12 is connected to a current collecting means 18 attached to the side surface of the self-propelled cart 6 from a power supply rail and a control signal transfer rail group 17 supported on the sides of the guide rails 3a and 3b facing the carts 6 and 7.
The transport device 5 is automatically controlled by electric power and control signals supplied through the transport device 5, and the transport device 5 can be arbitrarily controlled to travel.

The platform support member 8 has one end connected to both the carts 6,
7, and extends downward from the sides of the guide rails 3a, 3b via the upper part of the guide rails 3a, 3b. The inner end of the loading platform 9 is pivotally supported so as to be vertically swingable. This loading platform 9 is prevented from swinging downward from the usage position in which it extends in the horizontal and lateral directions by contacting the supporting member 8 with the contact part 20 that is connected downward from the inner end. By rotating it upward around the support shaft 19, it is possible to switch to the retracted position in which it stands up along the support member 8. Reference numeral 21 designates cam driven rollers that are supported at both front and rear end positions of the outer end of the loading platform 9 by support shafts that are oriented horizontally orthogonally to the support shaft 19 when in the use position.

In addition, the guide rail 3a of the loading platform usage route 1
A support bracket 23 is located between the guide rail 3a and the platform support member 8 on a support frame 22 erected to surround the platform storage return path 2.
Supported through. Reference numeral 24 denotes a support bracket that similarly supports the guide rail 3b of the loading platform storage return path 2.

Cam rails 25a, 25b, and 26 are arranged in parallel with the lifting guide rails 4a and 4b and the guide rail 3b of the loading platform storage return path 2, which hold the loading platform 9 in an upright storage position via the cam driven roller 21. The cam rails 25a and 25b, which are arranged in parallel with the lifting guide rails 4a and 4b, are supported by an elevator frame (not shown) that supports the lifting guide rails 4a and 4b and is moved up and down by a suitable lifting drive means. The cam rails 26 arranged in parallel with 3b are supported inside the support frame 22, as shown in FIG. Reference numeral 27a denotes a curved cam rail disposed at the terminal position of the loading platform usage route 1, and is used to move the loading platform 9 as the transport device 5 moves just before transferring from the guide rail 3a of the loading platform usage route 1 to the elevating guide rail 4a. , cam driven roller 2
1 to rotate from the usage position to the standing storage position. Reference numeral 27b is a curved cam rail disposed at the starting end position of the loading platform usage route 1, and as the transport device 5 moves from the lifting guide rail 4b to the guide rail 3a of the loading platform usage route 1, the loading platform 9 is moved. is gradually rotated from an upright storage position to a use position via a cam driven roller 21.

Next, to explain how to use it, the conveyance device 5 moves from the lifting guide rail 4b to the guide rail 3a of the loading platform usage route 1, and then moves to the curved cam rail 27b.
At the loading position A (see Fig. 1) immediately after the loading position 9 has been switched from the standing storage position to the operating position, the transporting device 5 is temporarily stopped or moved. Transfer the workpiece W onto the top. The conveying device 5 carrying the work W on the loading platform 9 is moved forward at a predetermined speed along the loading platform usage route 1, and the conveying device 5 is temporarily stopped at each work position, or the worker performs various operations on the workpiece W, such as parts assembly operations. In this case, the container 29 containing the assembly parts
As shown by the imaginary line in FIG. 2, the parts can be placed on a parts shelf 28 constructed above the moving path of the transport device 5. Further, a support rail 30 that supports the loading platform 9 in the usage position via the cam driven roller 21 can be installed on the loading platform usage path 1.

When the conveyance device 5 reaches the unloading position B set at the end of the loading platform usage path 1, at the position B, the conveying device 5 is either temporarily stopped or moved and unloaded onto the loading platform 9. Unload the completed workpiece W from the Thereafter, as the conveyance device 5 passes by the curved cam rail 27a, the loading platform 9 is gradually rotated upward from the usage position via the cam driven roller 21. After the loading platform 9 is in the upright storage position, the conveying device 5 moves to the guide rail 3.
The loading platform 9 moves onto the elevating guide rail 4a waiting at the upper limit position connected to a and stops.
It is held in the upright retracted position by.

Once the lifting guide rail 4a is lowered and connected to the guide rail 3b of the loading platform storage return path 2, the conveying device 5 is moved backwards and transferred onto the guide rail 3b of the loading platform storage return path 2, and the lifting guide rail Make it run to the side where 4b is. At this time as well, the loading platform 9 is maintained in the upright storage position due to the presence of the cam rail 26. This loading platform storage return route 2
When the transport device 5 moves onto the lifting guide rail 4b from above the guide rail 3b and stops, the lifting guide rail 4b is raised to the upper limit position where it connects to the guide rail 3a of the loading platform usage path 1, and the transport device 5 is moved again. By moving the transport device 5 forward, the transport device 5 can be returned to the starting end of the platform usage path 1. Of course, the loading platform 9 of the conveying device 5 on the lifting guide rail 4b is held in the upright storage position by the cam rail 25b, and this conveying device 5
By moving onto the guide rail 3a of the loading platform use path 1 and moving beside the curved cam rail 27b, the loading platform 9 is gradually rotated back to the usage position via the cam driven roller 21.

By providing the transport device 5 with a conventionally well-known storage function under electrical control, the transport device 5 can be stored, for example, on the loading platform storage return path 2. Also, the cam rail 25a,
In order to omit 25b and 26, the cam rail 27
A locking means for automatically locking the cargo platform 9 folded at point a, such as a ball chuck or a magnetic chuck, may also be provided. In this case, lock release means may be provided to automatically release the locking action of the platform locking means when the conveyance device 5 passes the starting end of the movement path beside the curved cam rail 27b.

The monorail type conveyance device of the present invention can be implemented and used as described above, and is supported by a guide rail and runs on one side of the guide rail (in the embodiment, a self-propelled truck 6 and a free truck 7). ),
and a loading platform supported in a cantilevered manner by the truck such that the guide rail is positioned between the truck and the truck, and the truck has wheels (in the embodiment, drive wheels 11 and Idle wheel 15),
Vertical shaft rollers for steady rest (rollers 14,
16), and a motor-driven propulsion drive wheel (driving wheel 11 in the embodiment), and the loading platform is horizontally attached to a support member extending downward from the side of the guide rail via above the guide rail. The system is pivoted so that it can be folded between the usage position where it extends laterally and the storage position where it stands up almost vertically, and the trolley and loading platform are distributed to the left and right sides with a guide rail in between. Because it is a monorail type, it can run stably as a well-balanced transport device, and since the guide rails fit within the vertical height range of the transport device, it can be used as a transport device movement path. The cross-sectional area of the space that must be secured can be reduced. Moreover, since the horizontally extending loading platform can be folded into an upright storage position on routes where it is not used, the cross-sectional area of the space that must be secured on the return route of the transport device where the loading platform is not used is reduced. can be made even smaller. Therefore, as shown in the embodiment, when the transport device return path is arranged in parallel using the space directly below the loading platform usage route, a space is secured directly under the loading platform in the loading platform usage route to make the worker's feet wider; Helps improve work efficiency. Furthermore, even when the transport device return path is arranged parallel to the back of the loading platform usage path, the cross-sectional area of the entire occupied space including both paths can be reduced, and the space can be used effectively.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of the entire structure, Figure 2 is a vertical side view, Figure 3 is a partially cutaway front view of the conveyance device on the loading platform usage route, and Figure 4 is the conveyance device in the loading platform return route. FIG. 1... Loading platform use route, 2... Loading platform storage return route, 3a, 3b... Guide rail, 4a, 4b...
... Lifting guide rail, 5 ... Transfer device, 6 ... Self-propelled cart, 7 ... Free cart, 8 ... Loading platform support member, 9 ... Loading platform, 11 ... Drive wheel, 12 ... Drive motor, 14 , 16... Vertical shaft roller for steady rest, 15... Idle wheel, 21... Cam driven roller, 25a, 25b, 26... Cam rail, 2
7a, 27b...Curved cam rail.

Claims (1)

[Scope of utility model registration request] a truck supported by a guide rail and running on one side of the guide rail; and a loading platform supported in a cantilevered manner by the truck so that the guide rail is positioned between the truck and the truck, the truck The platform is equipped with wheels that ride on the upper end of the guide rail, vertical axis rollers for steadying that sandwich the lower end of the guide rail from both left and right sides, and a motor-driven drive wheel for propulsion. A monorail type conveyance device that is pivotally supported by a support member that extends downward from the side of the guide rail so that it can be folded between a use position in which the guide rail extends laterally in a horizontal state and a storage position in which it stands approximately vertically. .