JPS64319B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crane that travels on a track on rails.

An overhead crane has a configuration in which a girder is equipped with a trolley for suspending a load, the girder is supported by being placed on a truck, and the truck is freely mounted on a rail installed in a building.

Conventionally, when pulling out an overhead crane's track to a position where it does not overlap with the girder for maintenance inspection or replacement, it is necessary to raise the girder with a jack, move the girder upward away from the truck, and then manually move the truck to a position where it does not overlap with the girder. Pull out. In this case, since the truck runs on one rail, there is a risk that the truck will fall over. In order to eliminate this danger,
Apply measures to prevent the truck from tipping in advance and move on to the pulling process.

In such a conventional example, the work to pull out the work is done at a high place in the building and under the girder, which is dangerous, and the work to pull out the work itself is time-consuming.

SUMMARY OF THE INVENTION An object of the present invention is to safely and easily extract a crane truck.

The main point of the present invention is that, as a basic configuration, in a crane supported freely by a truck running on a rail, a guide rail is installed outside the crane in parallel with the rail, and is arranged so as to be freely divertable to the guide rail. A crane traveling truck is removed, characterized in that a rotating body is rotatably attached to a connecting beam, a motor is connected to the rotating body, the motor is supported by the connecting beam, and the connecting beam is connected to the truck. When the rotating body is rotationally driven by a motor, the rotating body rolls and moves along the guide rail, and the track is automatically extracted by this movement.

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

As shown in Figure 1, the overhead crane consists of a trolley 1, a supporting girder 2, and a truck 3 on which both ends of the girder 2 are mounted.
It consists of The truck 3 is equipped with wheels 3a, which are mounted on rails 14 installed in the building 5.

A bracket 6 having a hole through which a pin 7 can pass is fixed to the side surface of the track 3. Extraction device 4
can be attached and detached from the bracket 6 by inserting and removing a pin 7.

As shown in FIG. 3, the extraction device 4 includes a connecting beam 1 detachably connected to a bracket 6 by a pin 7.
5 and a motor 8 fixed within the connecting beam 15.
, a gear 10 and a wheel 11 rotatably attached to the connecting beam 15, a rack 13 that meshes with the gear 10, and a guide rail 12 on which the rack 13 is installed.
It consists of

The guide rail 12 is fixed to the side wall of the building 5 in parallel with the rail 14. Further, the gear 10 and the wheel 11, which are rotating bodies, are integrated so that their rotation centers coincide with each other. These gears 10 and wheels 11
is connected to the rotating shaft of the motor 8 by a joint.

In this embodiment, when the overhead crane is used for cargo handling work, the pin 7 is removed from the bracket 6 to separate the extraction device 4 and the truck 3, and the movement of the overhead crane is prevented by the extraction device 4. to avoid being

When extracting truck 3, connect beam 15
is connected to the bracket 6 by a pin 7. next,
Apply a jack from the building 5 to the arrow 16 shown in FIG. 2, and lift the girder 2 with the jack. In this way, the girder 2 floats away from the top of the track 3. Thereafter, when the motor 8 is started to rotate in accordance with the extraction direction, the gear 10 and the wheel 11 are rotated. Therefore, the gear 10 moves along the guide rail 12 while meshing with the rack 13, and the wheel 1
1 rolls on the guide rail 12. For this reason,
The truck 3 travels on the rail 14 in the direction of arrow A in FIG.

At this time, when the truck 3 tries to fall to the left in FIG. 3, the foil 11 hits the rack 13 and supports the fall, and when it tries to fall to the right, the foil 11 hits the guide rail 12 to prevent it from falling.

The main purpose of adopting the foil 11 is to support the load transmitted from the connecting beam 15 side by the foil 11 on the guide rail 12 so that the gear 10 does not press down against the rack 13 with excessive force. . As a result, gear 10 and rack 13
When the gear 10 is in mesh with the gear 10, it is possible to achieve smooth rotation of the gear 10.

As described above, according to the present invention, since the truck can be pulled out from under the crane girder using the power of the motor,
It is not only safe because there is no need for human hands to approach the girder during the drawing operation, but also the effect that the drawing operation can be easily accomplished because the manual drawing operation is no longer required.

[Brief explanation of drawings]

Fig. 1 is an overall view of an overhead crane adopting an embodiment of the present invention, Fig. 2 is a view taken along the line B-B in Fig. 1,
FIG. 3 is an enlarged view of the main part of FIG. 1. 2... Digit, 3... Track, 4... Extraction device,
5...Building, 6...Bracket, 7...Pin, 8
...Motor, 10...Gear, 11...Wheel,
12... Guide rail, 13... Rack, 14...
Rail, 15...Connection beam.

Claims (1)

[Claims] 1. In a crane in which a girder is supported by tracks running on single rails arranged on the left and right sides, a position above the rail and facing the outer surface of the track. an L-shaped guide rail installed in the building along the running direction of the truck, with the tip of the L-shaped horizontal piece facing the truck side; and an upper surface on the tip side of the horizontal piece of the guide rail. a wheel located in the gap between the rack and the vertical piece of the guide rail and capable of resting on the horizontal piece; a wheel provided coaxially with the wheel and capable of engaging with the rack; a gear, a motor that rotates the gear, and a connecting beam that includes the motor, has the gear and the wheel protruding from one end, and has a bracket for the truck removably attached to the other end; A crane traveling track extractor comprising: the bracket installed on the outer surface of the crane;