JPS599441B2 - Trolley runaway prevention device for trolley conveyor equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides that when a movable rail portion is provided on the fixed rail of a trolley conveyor device, the movable rail portion moves from the normal running position of the fixed rail, for example, near a ceiling beam to a lower position. While the trolley is suspended on the movable rail section, it protrudes onto the transition path to prevent it from escaping or falling, and when the movable rail section returns to its normal running position, the trolley is immediately transitioned so that it can move freely along the rail. This invention relates to a trolley runaway prevention device that opens a road.

When installing conveyor rails under ceiling beams to transport products, semi-finished products, and raw materials without occupying the work floor inside the factory, the location of the conveyor rails must be determined in order to hang and unload the transported goods on trolleys. There are various methods that can be considered, such as lowering the fixed rail to the work surface in advance or raising the work surface, but it is possible to use the rail at that work position as a movable rail and lower the movable rail to the work surface when necessary. Once moved, loading and unloading operations can be carried out safely.

In this case, during movement and loading/unloading work, there is a risk that the trolley suspended on the movable rail section, which is far from the normal running position, may run away or fall, as mentioned above. It is necessary to equip a prevention device, but at the same time, this locking and releasing device must also be equipped.

The present invention solves the above problem by employing a relatively simple device that utilizes an eccentric rod and a locking device.

The configuration of the present invention will be explained below with reference to the illustrated embodiments.

In FIGS. 1 to 3, a movable rail portion 4 is provided on a trolley conveyor rail 3 for conveying a trolley hanger 6. As shown in FIGS.

This movable rail portion 4 is set to a length necessary for the work.
As shown in FIG. 1, a plurality of trolley hangers 6 are connected to the movable rail section 4 by trolleys 7 and transferred to the trolley conveyor rail 3. The above-mentioned movable rail section 4 is
It is configured such that it can be moved up and down between a normal traveling position XX and a working position Y-Y via a frame 14 by a lifting device 12 fixed to a ceiling beam.

In FIG. 1, this lifting device 12 is provided near both ends of the movable rail portion 4. As shown in FIG. At the end 45 of the movable rail section 4, a travel stopper 21 is swingably provided which projects from above and retracts toward the transition path 20 of the trolley 7.

As shown in FIGS. 2 and 3, the traveling stopper 21 is a substantially L-shaped rod that is swingably supported by ears 22 and 23 fixed to the upper surface of the end portion 41. The weight of the part 24 is made larger than the tail part 25, and when the head part 24 is eccentric and free, the head part 24 is directed toward the transition path 20 through a long hole 27 bored in the upper wall 26 of the end part 4' of the movable rail part 4. It is constructed so that it protrudes.

On the other hand, a bracket 28 fixed to a fixed side such as a ceiling beam,
A locking device 29 is attached which engages the travel stopper 21. This locking device 29 locks the travel stopper 12 when the movable rail portion 4 is raised to the normal travel position.
1 by pressing the tail 25 of the head 2 as shown in FIG.
4 from the elongated hole 27 of the end 4I of the movable rail section 4 to the transition path 2
It operates by swinging it out of 0 and locking it in that position.

The head 24 of the travel stopper 21 prevents the trolley 7 from traveling when the trolley 7 protrudes into the transition path 20;
To prevent a trolley 7 from running off the rail during the vertical movement of a movable rail part 4.

The device of the present invention has the above-described configuration, and when the locking device 29 separates from the tail portion 25 of the traveling stopper 21 due to the start of descent, the head portion 24 of the stopper 21 is moved into the elongated hole 25 by its own weight.
It protrudes toward the transition path 20 of the end 4' of the movable rail part 4 through it, and obstructs the running of the trolley 7, thereby preventing the trolley 7 from escaping during the downward movement. This state is maintained both when the movable rail section 4 is stopped for loading and unloading work and when the movable rail section 4 is being raised after the work is completed, and during this time the runaway of the trolley 7 is restricted by the traveling stopper 21. be.

At the end of the upward movement, when the movable rail section 4 is brought to the upper limit of the upward movement, that is, the normal running position XX and stops, the head 24 of the running stopper 21 moves to the transition path 2 as described above.
The trolley 7 can then be swung out of the zero position and then transferred to another work station by means of a suitable drive on the trolley conveyor rail 3 arranged along the ceiling beam. In the above-mentioned embodiment, a rail made of a C-shaped cross section is illustrated, but it goes without saying that a similar escape prevention device can also be provided for a rail made of an I-shaped member or the like. Since the device of the present invention has the above-described structure and function, it is possible to install conveyor rails under the ceiling beams and transport products, semi-finished products, and raw materials without occupying the working floor inside the factory. The rail at the working position for suspending and unloading the transported goods from the trolley is made into a movable rail part, and when necessary, the movable rail part can be moved down to the work surface to safely perform loading and unloading work. During the downward movement of the movable rail section and during loading and unloading work, the trolley suspended on the movable rail section away from its normal running position is prevented from running away, ensuring reliable and safe work. Therefore, production efficiency can be improved.

[Brief explanation of the drawing]

Figure 1 is an overall layout of the lifting device and escape prevention device in the embodiment, Figure 2 is a front view of the vicinity of the end of the movable rail, and Figure 3
The figure is a side view showing a part of the movable rail section as a cross-section, and shows how the travel stopper is installed when preventing runaway. 3... Trolley conveyor rail, 4...
・Movable rail part, 12... Lifting device, 20.
...Trolley transition path, 21... Travel stopper 29... Locking device, X-X...
・・Regular running position, Y-Y・・・・Working position.

Claims (1)

[Claims] 1. In a trolley conveyor device having a movable rail section, an eccentric rod is attached to the upper surface of the end of the movable rail section, the head of which is closer to one side of the support shaft, and whose tail is heavier than the tail closer to the other side, so as to be able to swing vertically. While the movable rail part is in a lowered position away from the normal running position, the head of the eccentric rod is on the upper surface of the movable rail part in the trolley transition path within the movable rail part. The head of the eccentric rod is moved out of the upper surface of the trolley transition path while in a first position in which it protrudes through a drilled elongated hole and blocks the transition path, and in a normal running position that is elevated from the lowered position. The swinging range is between a second position in which the trolley swings and opens the trolley transfer path, and a tail portion of the eccentric rod is provided at an end of the fixed trolley conveyor rail that is continuous with the end of the movable rail portion. A trolley escape prevention device comprising: a locking device that abuts on the eccentric rod and rotates the eccentric rod to the second position.