JP3413642B2 - Method and apparatus for erection of stake for mountain stay - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for erection cuts for mountain retaining.

[0002]

2. Description of the Related Art When a large excavation is performed in the ground, a member for supporting horizontally in order to prevent the surrounding earth and sand from collapsing is cut and cut. An example of its use is shown in the figure. In order to install the cut rice a, a method of suspending the cut rice from a crane located above the ground in a predetermined installation position and fixing it between pillars underground is adopted. ing.

[0003]

The above-mentioned conventional method for constructing cut shavings for yamadome has the following problems. <a> When the cut cake becomes large, it is uneconomical because a crane that can suspend a heavy cut cake over a long distance in the horizontal direction is required. <B> As depth increases, many stages of cuttings are required,
The erection method of setting in a state of being lifted by a crane is troublesome. <C> When suspending the cuts to a deeper position, the gap between a large number of cuts that are erected on the upper part of the cuts will be hung down to a predetermined position, and it will take time and the upper and lower cues will be signaled. It was easy to become uncertain and there was a problem with safety.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and provides a method and a erection device capable of economically and safely erection cuts for mountain retaining. With the goal.

[0005]

[Means for Solving the Problems] That is, the present invention is a method of constructing a cut slag between pillars of an underground structure. First, the pillars are installed in the ground, and then the earth and sand between the pillars is made one layer. Excavation is carried out for each stage, and after the completion of one level of excavation, the ready-made cuttings are hung up to the excavator, and the ready-made cuttings are mounted on the loading platform of a truck equipped with a vertically movable loading platform and transported between pillars. A method of constructing a cut lees for mountain retaining, in which both ends of the cut lees are fixed between the columns while being supported at a predetermined height between predetermined columns. Further, the present invention comprises a pedestal rotatably attached to the upper part of the traveling device, an outrigger, and a loading platform slidably installed laterally with respect to the gantry, and a jack for laterally extending the outrigger,
The erection device includes a jack for moving the loading platform to the side, a jack for moving the loading platform up and down, and a jack for moving the loading plate at the upper end of the loading platform back and forth in the traveling direction.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The method and apparatus for constructing cut shavings for mountain retaining of the present invention will be described below with reference to the drawings. First, an apparatus used in the erection method of the present invention will be described.

<A> Overall Configuration The erection device of the present invention comprises a pedestal 2 rotatably attached to the upper part of the traveling device 1, an outrigger 3, and two loading platforms 4 movably attached to the pedestal 2. Constitute. Traveling device 1
Adopts a crawler track traveling mechanism similar to a bulldozer so that it can travel on rough terrain and can rotate in a small radius. A pedestal 2 is rotatably mounted on top of the traveling device 1. Two extensible beams 21 are installed in the gantry 2 in the transverse direction (meaning the transverse direction with respect to the traveling direction; the same applies hereinafter), and outriggers 3 are attached to both ends of the extensible beam 21. This outrigger 3 can be used in order to avoid breaking the ground when changing the direction while traveling. Alternatively, the crawler belt traveling mechanism and the entire loading platform can be left floating, and the crawler belt traveling mechanism can be used to turn the crawler belt traveling mechanism to an arbitrary position to change the direction on the spot.

<B> Loading platform 4 The loading platform 4 is a platform for mounting heavy cuts.
The platform 4 operates as follows. 1. ・ Transverse movement with respect to the traveling direction 2 ・ Large vertical movement and small vertical movement 3 ・ Parallel movement in parallel to the traveling method The following configuration is adopted.
Rails are provided on the gantry 2 in the transverse direction, and the entire loading platform 4 is mounted on the rails. The two loading platforms 4 are installed on both sides from the center of the gantry 2. Further, each cargo bed 4 has an outer frame 41, a middle frame 42, and an inner frame 4 so as to expand and contract in two stages in the vertical direction.
3 and 3 are fitted in this order in the vertical direction. (FIG. 3) The middle frame 42 lifting jack vertically arranged inside the outer frame 41 moves the middle frame 42 up and down by a large size. The inner frame 43 lifting jack arranged vertically inside the middle frame 42 is
Move 3 up and down slightly to set the correct position. Further, a slide load receiving plate 44 that is movable in the front-rear direction is attached to the upper surface of the inner frame 43. Therefore, the scraps to be transported are mounted on the slide load receiving plate 44.

<C> Arrangement of Jacks A plurality of jacks are arranged for the above configuration. (FIG. 2) The outrigger jacks 31 are arranged so as to pull out the outriggers 3 laterally so that reaction force can be exerted on the pedestal 2.
In order to move the loading platform 4 to the side, the loading platform moving jack 45
Is also arranged so that the reaction force can be applied to the gantry 2. In order to move the loading platform 4 up and down, the middle frame lifting jack and the inner frame lifting jack are arranged in the vertical direction as described above. Further, a slide jack 46 for moving the slide load receiving plate 44 for receiving the load on the upper surface of the load platform 4 back and forth in the traveling direction is arranged horizontally so that a reaction force can be applied to the inner frame 43.

[0010]

[Operation] Next, a method of constructing cut shavings using the above apparatus will be described. <a> Purpose of erection First of all, the purpose is to install a large number of pillars in the ground, excavate the earth and sand between the pillars layer by layer, and bridge cuts between the pillars. (FIG. 5) The shape of the cut cake is, for example, SRC cut cake in which the periphery of a steel frame is surrounded by concrete. Such cuts are produced at the factory or on the ground under good quality control.

<B> Suspension of cut shavings Every time one layer of excavation is completed, the above-mentioned ready-made cut shavings are suspended to the excavator. In this way, the process of suspending cut cakes underground is the same as the conventional method. However, in the conventional method, it was necessary to hang the cut cake directly at the position where it was erected. However, in the erection method of the present invention, since the cut soil is once suspended on the underground excavation surface and then horizontally transported on the excavation surface, the position at which the cut soil is suspended can be freely selected. Therefore, the crane can be hung at a position where there are few obstacles such as cuts in the upper space, and a position where the boom of the crane can be extended and not used.

<C> Transportation by excavator This cut cake is mounted on the above-mentioned apparatus of the present invention and temporarily fixed. And drive the traveling device 1 to move on the excavator,
Insert the erection device between the specified columns and stop.

<D> Installation of cuts The cuts are welded after fixing the joints 51 protruding on both sides and the brackets previously attached to the columns with bolts. Therefore, the bolt holes must be aligned very accurately, and it is difficult to expect the holes to be aligned accurately when the erection device is stopped on an irregular ground. However, as described above, when the erection device of the present invention is used, the cut cake is mounted on the slide load receiving plate which can be moved up and down and can be moved back and forth. Therefore, it is extremely easy to make fine position adjustments in the up-down, front-rear, and left-right three-dimensional directions.
The bolt holes can be matched exactly. The same applies to other methods that do not use bolts.

[0014]

As described above, since the method and apparatus for constructing cut shavings for mountain retaining of the present invention are as described above, the following effects can be obtained. <I> Kiritani is a method of temporarily suspending the material from the underground excavation surface and then carrying it horizontally on the excavation surface. Therefore, it is possible to freely select the position at which the cut bar is hung, there are few obstacles such as cut bar at the top, and the crane can be hung at a position where the boom is not used for a long time. Therefore, there is no need to use an expensive crane with a large lifting capacity, which is economical. <B> When excavating at a large depth, it has been necessary to hang a new cut cake through the gaps between the cut cakes in the conventional method. For this reason, careful work is required, and it is troublesome and there is a safety problem that the balance is lost and the robot falls if it hits the upper part in a cut. However, in the method of the present invention, the hanging position can be freely selected with respect to the installation position, so that it can be quickly and safely hung using a wide space, which is extremely economical. <C> This is a method of directly setting cuts by an erection device stopped between columns to be set. Therefore, delicate position adjustment can be performed safely, quickly, and accurately as compared with a method in which positioning is performed by hanging the crane from a high upper part.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of an erection device for shavings for mountain retaining of the present invention.

[Figure 2] Plan view

[Fig. 3] Explanatory drawing of the loading platform

[Fig. 4] Explanatory diagram of running state and installation

[Fig. 5] An explanatory view of a situation where a cut stalk is installed.

   ─────────────────────────────────────────────────── ─── Continued front page       (56) Reference JP-A-4-174130 (JP, A)                 JP-A-57-141394 (JP, A)                 JP-A-3-21798 (JP, A)                 Actual Kaihei 2-49987 (JP, U)

Claims (2)

(57) [Claims] 1. A rack rotatably attached to an upper portion of a traveling device.
The platform, the outriggers attached to the gantry via the telescopic beam, and the loading platform that is installed slidably to the side of the gantry.
In order to move the outrigger to the side, the jack to move the loading platform to the side, the jack to move the loading platform up and down, and the load receiving plate at the upper end of the loading platform to move back and forth in the traveling direction. of
An erection device consisting of a jack . 2. A method of constructing a crossbeam between columns of an underground structure.
So , first install the pillars in the ground, then excavate the earth and sand between the pillars in each layer, and after finishing the excavation of one layer, suspend the ready-made beams to the excavator.
Lower, mounting the prefabricated Setsuhari on the bed of the installation apparatus of claim 1, wherein
And then transport it between the pillars, and adjust the position delicately in the three-dimensional direction.
Support the fixed height between the columns and secure both ends of the beam to the columns.
The method of erection of the girder for Yamadome.