JPS627120B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-powered mobile crane, and particularly to a self-powered mobile crane used for construction work.

Conventionally, self-powered mobile cranes used in construction work have a configuration in which a crane boom is mounted on a self-powered mobile device such as a belt-type traveling device, a truck-type traveling device, or a wheel-type traveling device. According to this, the reaction force against the load suspended by the crane is obtained by the weight of the self-powered moving device, that is, the traveling device, and therefore, there is a problem that the maximum load to be lifted cannot be set to a large weight from the viewpoint of stability. If outriggers are installed on the traveling gear, the maximum permissible lifting load performance will be improved, but even in this case, the weight of the traveling gear will still act as a reaction force to the lifting load, so there will be restrictions on improving the lifting load performance. However, it is not always completely satisfying. Moreover, because the outriggers protrude from the sides, it takes up a lot of space.

It is an object of the present invention to eliminate the drawbacks of the prior art described above and to provide a self-moving crane that can obtain an extremely large lifting load reaction force, and can achieve this with a small self-moving device.

The self-moving crane with a reaction device of the present invention is a self-moving crane in which a crane boom is mounted on the self-moving device, and the self-moving device includes a saddle extending in a parallel direction of piles built in the ground;
and a slide base that is installed on the saddle and that can be moved relative to the saddle in the pile parallel direction by more than the pile parallel pitch, as a component, and the reaction force against the load when lifting the pile erected in the ground is included. A first clamp that grips as an anchor is provided at the end of the saddle, a second clamp that grips a pile built in the ground as a reaction anchor against a lifting load is provided on the slide base, and the crane boom is attached to the slide base. It is characterized by the fact that it is equipped with

According to the present invention, by gripping the first clamp of the saddle and the second clamp of the slide base to a pile built in the ground, the pile serves as a reaction anchor against the load lifted by the crane,
Through the pile, the earth can be used as a reaction force for the load lifted by the crane. Therefore, according to the present invention, an extremely large suspension reaction force can be obtained. Moreover, in the present invention, this can be achieved by a small self-powered moving device that includes the saddle with the first clamp and the slide base with the second clamp as components. Incidentally, in the present invention, a small self-moving device with a height of about 1.4 m, a length of about 2.4 m, and a width of about 1 m is sufficient; It is about 1/7 the size of smaller mobile devices (when equipped with outriggers and extended to the sides).

In the present invention, the second clamp (or first clamp) is released, the slide base (or saddle) is moved in the parallel direction of the piles built in the ground by more than the pile parallel pitch, and the first one is moved at the moved position. The method is to have the pile grip the released clamp, release the clamp that was gripping the pile earlier, and move the saddle (or slide base) in the same direction as above using the moved slide base (or saddle) as support. This allows the self-powered moving device to move on its own over the parallel piles built into the ground, so to speak, thereby achieving self-powered movement of the crane.

As described above, in the present invention, the crane can be moved on the parallel pile by itself using the moving device, so even if the construction site is a river or the like, the crane can be easily moved in a row.

Furthermore, in the present invention, as is clear from the above, the saddle clamp and the slide base clamp not only serve to obtain the reaction force against the suspended load, but also function as the undercarriage for moving the self-powered moving device. Therefore, self-transfer of the crane and acquisition of the lifting load reaction force can be easily achieved.

In the present invention, when the first clamp and the second clamp are of a vertically movable type, even if the pile is a groove type or H type steel sheet pile or cylindrical pile commonly used in construction work, By retracting the released clamp above the pile, the saddle and slide base can be accurately and easily moved relative to each other in the direction in which the piles are parallel without being obstructed by the pile.
The clamp can be lowered at the moved position and the pile can be gripped again.

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

In the figure, reference numeral 1 indicates a self-powered moving device, and the device 1 includes a saddle 2 and a slide base 3 mounted on the saddle. Saddle 2 is pile 4 built into the ground...
The slide base 3 extends in the parallel direction of the saddles 2, and is configured to be able to slide on the saddle 2 along the saddle 2. A drive device for effecting the relative drive between the saddle 2 and the slide base 3 is indicated by the reference numeral 5, and can be a hydraulic cylinder-plunger device extending along the length of the saddle 2. The drive device 5 is connected to the slide base 3 at one end and to the saddle 2 at the other end.

6 is a first clamp that grips the pile 4 built in the ground, 7 is a second clamp that also grips the pile 4, and the first clamp 6 is installed at the end of the saddle 2,
The second clamp 7 is installed on the slide base 3.
The first clamp 6 and the second clamp 7 may have a pile gripping chuck in a conventionally known hydraulically driven pile press-in/pulling machine or a pile gripping/releasing structure similar to that of a clamp. The first clamp 6 can be moved up and down by an appropriate type of vertical drive mechanism 8, such as a hydraulic cylinder plunger device, which has one end connected to an arm 18 integrated therewith and the other end connected to the saddle 2. , the second clamp 7 can also be moved up and down by a similar type of up and down drive mechanism 9. The latter mechanism 9 has one end connected to the saddle 3
The other end is connected to a vertical slide board 10 on which a second clamp 7 is suspended.

11 is a crane boom, and the crane boom 1
1 is a base 12 that can pivot in directions around a vertical axis;
It is mounted on the slide base 3 above the saddle 2 on the base. Reference numeral 13 denotes a telescopic swing arm of an appropriate type, such as a hydraulic cylinder plunger device, which swings the crane boom 11 up and down. Reference numeral 14 indicates a hoisting machine of the crane 15.

If necessary, the second clamp 7 may be movable in the front and back directions of the pile 4 (left and right directions in FIG. 5). For example, a pair of parallel groove-shaped rails 16 extending in the left-right direction in FIG. The purpose can be achieved by coupling the second clamp 7 to the slide plate 10 by forming a slider 7 and similar to the slidable lower engagement of the rail 16 and the overhanging head 17.
In this case, the movement of the second clamp 7 in the left-right direction in FIG. 5 contributes to adjusting the required relative position of the second clamp 7 with respect to the first clamp 6. It is sufficient to move the second clamp 7 manually.

Pile 4 built in the ground... is the first pile of saddle 2.
When gripped by the clamps 6, 6 and the second clamps 7, 7 of the slide base 3, the crane 15
It is connected to the earth through... That is, pile 4...
... acts as a reaction force anchor against the load during the lifting operation of the crane 15.

When the crane 15 is installed on top of the pile 4 by the grips of the first clamps 6, 6 and the second clamps 7, 7, the slide base 3 is placed in the relative position shown in Fig. 2 (same as Fig. 6). ), after releasing the second clamps 7, 7, the drive mechanisms 9, 9 move the pile 4 upward (Fig. 7), and the drive device 5 moves the slide base 3 to the right side in Fig. 7. (Fig. 8), lower the second clamps 7, 7 at the moved position to re-clamp the piles 4a, 4 (Fig. 9), and then
6 is released, the first clamps 6, 6 are raised by the drive mechanisms 8, 8 (Fig. 10), and the saddle 2 is moved to the right in Fig. 10 by the drive device 5 (Fig. 11).
), the first clamps 6, 6 are placed in the moved position.
to re-clamp piles 4 and 4 (first
Figure 2). By repeating the above operations, the crane 15 moves on its own over the erected parallel pile 4.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is an enlarged detailed view of a part of Fig. 1 (corresponding to the self-powered moving device in the same embodiment), Fig. 3 is a plan view thereof, Fig. 4 is a left side view, and Fig. 5 is a line drawn from Fig. 3. The sectional views and FIGS. 6 to 12 are front views showing the steps of the sequential movement operation of the self-powered moving device in the embodiment shown in FIG. 1. 1 is an automatic moving device, 2 is a saddle, 3 is a slide base, 4 is a pile, 5 is a saddle/slide base relative drive device, 6 is a first clamp, 7 is a second clamp, 8 is the first clamp up and down drive mechanism,
11 is a crane boom, 15 is a crane, and 18 is a second clamp vertical drive mechanism.

Claims (1)

[Claims] 1. A self-moving crane in which a crane boom is mounted on the self-moving device, and the self-moving device includes a saddle extending in a parallel direction of piles built in the ground, and a crane equipped on the saddle. and a slide base capable of relative movement of a pile parallel pitch or more in the pile parallel direction between the saddle and the first slide base, which grips the pile built in the ground as a reaction force anchor against a lifting load. A clamp is provided at the end of the saddle, a second clamp is provided on the slide base for grasping a pile built in the ground as a reaction force anchor against a lifting load, and the crane boom is mounted on the slide base. A self-moving crane with a reaction force device. 2. A self-moving crane in which a crane boom is mounted on the self-moving device, and the self-moving device has a saddle that extends in the parallel direction of the piles built in the ground, and the distance between the self-moving device and the saddle that is installed on the saddle. The first clamp includes a slide base as a component that can be moved relative to the pile parallel pitch or more in the pile parallel direction, and is movable up and down to grip the pile built in the ground as a reaction force anchor against a lifting load. is provided at the end of the saddle, and a second clamp capable of vertical movement is provided on the slide base to grasp a pile built in the ground as a reaction force anchor against the lifting load, and the crane boom is mounted on the slide base. A self-moving crane with a reaction force device, which is characterized by: