JPH0313496A - Crane running rail connecting device - Google Patents

Abstract

PURPOSE:To relieve impact at the time of a crane passing between plural buildings so as to obtain the smooth running of the crane hy providing a free roller at a connecting rail installed parallel to a crane running rail. CONSTITUTION:When the relative displacement of a building is generated, for instance, in case the spacing of buildings becomes smaller than normal, a connecting rail 1 slides on a free roller. In this case, as the A building crane running rail 2 side end part of the connecting rail 1 is fixed at an A building crane girder 4, these relative positions are unchanged, but the connecting rail 1 juts out on the B building crane girder 5 side. As the free roller is thus installed rotatably on a bearing according to the movement of the connecting rail 1, the movement of the connecting rail 1 is not constrained. A crane can therefore travel smoothly between plural buildings with different foundation slabs.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a crane, and particularly relates to a lane running rail connecting device suitable for allowing a crane to smoothly move between a plurality of buildings with different foundation slabs. .

[Conventional technology]

Conventionally, rail connections for cranes and other hoisting equipment involve extending, rotating, parallelly moving, and
Alternatively, measures such as simply reducing the gap between the connecting rails have been used.

Incidentally, as a conventional technique related to a crane girder, for example, Japanese Patent Application Laid-Open No. 127595/1983 can be cited.

[Problem to be solved by the invention]

The above conventional technology does not take into account naturally occurring displacements in the mutual positions of the connected rails, and is unable to follow the relative displacements of the buildings when it is assumed that the cooling lanes will move between multiple buildings. Met. The most common example is when simply connecting rails in series, efforts are made to minimize the gap between the rails, but when rails are installed in multiple buildings with different foundation slabs, when the gap between the buildings becomes small. When the rails come into contact with each other, stress may concentrate on the rails and rail attachments, causing them to break. To prevent this, the gap between the rails must be equal to that of the building. Next, when the crane is running,
When passing through the rail gap, the crane's running wheels get stuck in the rail gap, and the impact can cause the lobes and hooks of the suspended load to come off, which can adversely affect the crane's running axle and the end of the rail. Reducing the traveling speed to avoid shocks caused problems such as a decrease in the efficiency of transport operations.

An object of the present invention is to reduce the impact when a crane passes between a plurality of buildings and to allow the crane to run smoothly in one lane.

[Means to solve the problem]

The above object is achieved by further installing a rail in the gap between the crane running rails and parallel to the crane running rails.

The rail tread surface of the connecting device overlaps both ends of the crane traveling rail, and one or both ends are not fixed to the building so as to be able to cope with relative displacement of the building. A roller (bearing, etc.) is provided at the bottom of the connecting device rail to bear the load on the connecting device rail and to prevent it from being constrained by the movement of the building. The spacing between the connecting device rail and the crane travel rail should be such that it can accommodate displacement between adjacent buildings in the direction perpendicular to the rail.

Furthermore, the crane running wheels have a tread width sufficient to simultaneously run on both the crane running rail and the connecting equipment rail.

[Effect]

The connecting device rail is installed across the bridge between buildings with the tread aligned with the crane running rail, and the crane running wheel has enough tread to run on the crane running rail and the connecting device rail at the same time, so the gap between the crane running rail on the building side is A flat lane running track with no steps is ensured even in the middle of the road, and the crane wheels run smoothly on the track.

The connecting device rail is fixed at its end on one side of the building, but is not fixed on the other side, allowing it to move freely in accordance with the displacement of the building while keeping the crane travel track flat.

The free end of the connecting device rail is provided with rollers at the bottom to facilitate movement of the connecting device rail and to take loads on the connecting device rail.

Also, the side wall of the roller casing prevents the connecting device rail from shifting in the direction perpendicular to the rail.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 shows a state where the crane running rail connection device is installed between buildings.The A building crane running rail 2 and the B building crane running rail 3 are connected to the A building crane girder 4.
and is fixed to the B building crane girder 5, and the A building crane running rail 2 and the B building crane running rail 3 are installed in series. Connecting device rail 1 parallel to Ag shop crane running rail 2 and B building crane running rail 3
Set up. One end of the connecting device rail 1 is fixed to the A building crane girder 4, and the other end is fixed to the Bt! Place it on the free roller 8 installed on the ffi crane girder 5. The treads of the connecting device rail 1 are aligned with the A building crane running rail 2 and the B building crane running rail 3.

The treads of the crane running wheels 6 have a width equal to or greater than the sum of the two rail treads, the A building crane running rail 2, and the connecting device rail 1, and the center of the tread has a width that prevents the crane running track from shifting. A collar 7 is provided for this purpose.

The state of the free roller 8 is shown in FIG.
is mounted on a plurality of bearings 9 so that the connecting device rail 1 slides smoothly against the displacement of the building. The casing 1o of the free roller 8 also serves as a guide to prevent the connecting device rail 1 from shifting laterally with its side wall.

While the crane is running, the treads on the crane running rail side of the crane running wheels 6 normally support the load and maintain the running track, but when approaching the end of the running rail, both the treads on the connecting device rail 1 side supports the load. When the terminal ends of the A building traveling rails 2 are connected, the treads on which the crane traveling wheels transmit the load of the crane are only on the connecting device rail 1 side.

Since the treads of the connecting device rail 1 and the A building crane running rail 2 are at the same level, there is no difference in level when the crane transfers, and there is no impact when passing the difference in level.

Using the same procedure, the crane moves from the connecting device rail to the building B side rail 3, but at this time too, there is no impact when passing through the steps and steps. Therefore, during transportation work, it is no longer necessary to reduce the speed or stop the crane in order to reduce the impact when passing through gaps or steps, and the efficiency of the transportation work can be improved.

In addition, since there is no impact, there is no concern that the robe or hook will come off when slinging a suspended load, so stable conveyance work can be performed. Furthermore, in order to smoothly run through the gap between the crane running rails, the crane running wheels 6. The potential for damage to the crane running rail is also reduced, and the impact of impact on the crane mechanics is also eliminated.

When a relative displacement of the building occurs, firstly, if the gap between the buildings becomes smaller than usual, the connecting device rail 1 slides on the free roller 8. At this time.

Since the end of the connecting device rail 1 on the A building crane running rail 2 side is fixed to the A building crane girder 4, their relative positions remain unchanged, but the connecting device rail 1 is in a state of protruding into B building. In addition, if the gap between the buildings becomes larger than normal, the connecting device rail 1 and the building A crane travel rail 2. Although the relative position with respect to the crane girder 4 of building A remains unchanged, the connecting device rail 1 is retracted from the BJl building to the building A than usual. Connection device rail 1
has a length that can cover the maximum possible relative displacement of the building, so it will not come off the free roller 8.

Since the free roller 8 is installed on a bearing 9 so as to be able to rotate freely according to the movement of the connecting device rail 1, the movement of the connecting device rail 1 is not restricted.

According to this embodiment, the crane can smoothly travel between a plurality of buildings with different foundation slabs. Moreover, the crane running rail is not affected by the displacement of the building, and the connecting device can maintain the crane trajectory regardless of the displacement of the building. This improves the safety and efficiency of the aforementioned transport work.

It is possible to maintain and improve the health of the crane.

〔Effect of the invention〕

According to the present invention, since it is possible to ensure a stable running trajectory for the crane, there are effects such as ensuring the safety of crane transport work, improving efficiency, and maintaining the soundness of the crane body.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a side view of the free roller of the present invention. 1... Connection device rail, 2... A building crane running rail, -3... B building crane running rail, 4...
・A building crane girder, 5... B building crane girder. 6... Crane running wheel, 7... Crane running wheel center rib, 8... Free roller, 9... Bearing, 10
...Free roller casing. Figure 1

Claims (1)

[Claims] 1. A crane running rail connection device characterized in that a free roller is provided on a connecting rail installed parallel to the crane running rail.