JPH0213541Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is used for civil engineering and construction work by placing a civil engineering construction machine on the bottom of a river, lake, coast, etc. and maneuvering it to a place with poor footing such as underwater. The present invention relates to a mobile turntable device suitable for carrying out.

[Conventional technology]

Conventionally, in places with poor footing such as rivers, lakes, and coasts, civil engineering construction machines have been carried out on barges to carry out civil engineering work on the bottom of the water. Particularly on coasts with a lot of mud, when the tide is low, the bottom of the barge gets stuck in the mud due to the load of the barge itself and the civil engineering construction machinery, and even when the tide comes in, it is stuck to the seabed, and the tide is not enough. Unless the barge filled up, the barge would not float and could not be moved, often resulting in the loss of important work time.

[The problem that the idea attempts to solve]

An object of the present invention is to provide a turntable device that allows civil engineering construction machinery to be moved freely without using a barge, and that allows civil engineering construction work to be performed regardless of the ebb and flow of the tide.

[Means to solve the problem]

The turntable device of the present invention consists of a pair of turntables each supported by a plurality of telescoping legs operated by a hydraulic mechanism, and both ends of the turntable are rotatable about their respective central axes between the turntables. Each turntable can be freely rotated by connecting them with a pivoted connecting rod.
Furthermore, a freely connecting table is interposed between the turntables, the upper surface of which coincides with the upper surface of each turntable, so that the civil engineering vehicle can freely move between the turntables.

[Effect]

As described above, the present invention has a structure in which a pair of turntables have extendable support legs, and the turntables are rotatably connected to each other.
Therefore, when the legs of the first turntable on which the civil engineering work vehicle is mounted are extended while they are on the ground, the other turntables are lifted off the ground and are also directed toward the first turntable. Once lifted in a downwardly inclined state, the other turntables rotate and move around the outer periphery of the first turntable on which the civil engineering vehicle is placed due to their own weight.
In this moved state, the legs of the first turntable are reduced, the surface of the turntable is returned to horizontal, and the legs of the other turntables are stabilized by landing on the ground, and then the legs of the first turntable are Move the upper civil engineering vehicle onto the second turntable,
Civil engineering work can be carried out at a new location.

〔Example〕

Next, the device of the present invention will be explained with reference to drawings showing embodiments.

Referring to FIG. 1 showing a state in which a civil engineering construction machine is mounted and FIG. 2 showing a plan view, the turntable device of the present invention has a pair of turntables 1a and 1b. The shafts 2 of both turntables 1a and 1b are rotatably connected by a connecting rod 11 having their respective ends pivotally connected.

Moreover, between the turntables 1a and 1b,
A free tether table 12 is provided which coincides with the surface of each turntable 1a and 1b. Furthermore, both turntables 1a and 1b each consist of a lower circular base plate 3 rotatably attached to the vertical shaft 2 through a center hole, a middle circular base plate 9, and an upper circular base plate 10.

The lower circular base plate 3 has six telescopic legs 4 protruding from the periphery of the bottom plate at equal intervals. The telescopic legs 4 have a hydraulic cylinder portion 5 at their base and are provided radially downward around the bottom plate of the lower circular base plate 3. The tip of the hydraulic cylinder section 5 is equipped with a piston section 6 that can freely change the length of the legs using hydraulic pressure. 6 telescopic legs 4
An annular grounding part 7 is fixed to the outside of the lower part of the hydraulic cylinder part 5 and is coaxial with the lower circular base plate 3. The upper part of the annular grounding part 7 is formed to have a slightly larger diameter than the lower part, and the turntable 1a,
1b are adjacent to each other and form an annular sliding edge 8 that slides.

A middle circular base plate 9 is mounted on the lower circular base plate 3 with the vertical shaft 2 inserted through the center hole. The middle circular base plate 9 has a smaller diameter than the lower circular base plate 3, and a number of rollers 13 having radial rotation axes are mounted on the bottom plate at equal intervals, and can rotate on the lower circular base plate 3. .

Further, on the middle circular base plate 9, an upper circular base plate 10 formed to have the same diameter as the middle circular base plate 9 and having rollers 13 similarly attached to the bottom plate can rotate on the middle circular base plate 9 coaxially with the middle circular base plate 9. It is installed like this. 14 in the diagram
is a hydraulic device provided on the outer edge of the lower circular base plate 3.

Between the turntables 1a and 1b is a connecting rod 11 for connecting both turntables 1a and 1b.
is provided between the lower circular base plate 3 and the middle circular base plate 9 with both ends thereof pivotally connected to the vertical shaft 2.

Furthermore, a free connecting table 12 is provided between the turntables 1a and 1b. The free connecting table 12 consists of a lower base plate 15, a middle base plate 16, and an upper base plate 17 fixed thereon. Nokoro 18 is each turntable 1
Rollers 19 are attached to sandwich the bottom plate and the top plate of the lower circular base plate 3 of a and 1b, and one end of the shaft is attached to the lower base plate 15 and the middle base plate 16, respectively.
are attached so as to abut against the outer circumferential wall of the lower circular base plate 3, respectively. In the figure, reference numeral 20 denotes at least one tightening bolt nut provided for holding the lower circular base plate 3 between the lower base plate 15 and the middle base plate 16. In addition, 21 is one turntable 1 of the device of the present invention.
It shows the civil engineering construction machine mounted on a.

FIG. 3 is a diagram showing the operating state of the turntable of the present invention having the above structure.

Referring to the figure, when the civil engineering construction machine 21 is placed on the first turntable 1a and the piston part 6 of the telescoping leg 4 is extended by operating the hydraulic device (not shown), the second turntable 1b is connecting rod 1
1. Adjacent annular sliding edge 8 provided on annular grounding portion 7
It is supported by the intervening freely connected table 12 and is spaced apart from the ground E. In this state, the civil engineering machine 21 is appropriately fixed, the extension of each leg 4 of the first turntable 1a is adjusted, and the second turntable 1b, which has been raised from the ground E, is tilted upward. . The second turntable 1b is structured so that it can freely rotate around the outer circumference of the first turntable 1a by the above-mentioned mechanism.
It rotates around the first turntable 1a by its own weight. At the end of that rotation, the first
The legs 4 of the turntable 1a are reduced, the legs 4 of the second turntable 1b are placed on the ground, and the landing length of each leg is adjusted to make the first and second turntables 1a and 1b horizontal. return. In this state, the civil engineering machine 21 on the first turntable 1a
moves over the upper base plate 17 of the free connecting table 12 to the second turntable 1b, where,
You can continue with the next task. When the work is finished, the turntable on which the civil engineering construction machine 21 is not seated can be rotated in the same manner as described above to return to the initial starting position on land, for example.

FIG. 4 shows an example of linear movement of the turntable device of the present invention. Assuming that the first turntable is 1a and the second turntable is 1b, for example, a heavy object such as a civil engineering construction machine is placed on the turntable 1b, and the turntable 1a on which no heavy object is placed is replaced by the turntable 1b. 180 degrees to the right in the direction of the arrow along the arc-shaped dashed line around By rotating and moving to the right, the turntable device itself can be moved linearly in one direction in a predetermined direction.

[Effect of idea]

The present invention can achieve the following effects.

(1) A turntable with a relatively narrow work surface can cover a wide range of work areas.

(2) Basically, the drive mechanism is only the operation of a hydraulic device for extending and retracting the legs used for fixing and tilting the turntable, so the structure is simplified.

(3) When applied to shallow sea dredging work, there is no need to mount the machine on the work boat, and the work becomes easier because the work machine can be mounted from land by self-propulsion.

(4) Work efficiency is improved because work can proceed unaffected by the ebb and flow of the tide.

[Brief explanation of drawings]

The attached figures show embodiments of the invention. FIG. 1 is a diagram showing a civil engineering construction machine mounted on a turntable device. FIG. 2 is a partially cutaway plan view of the turntable device. Figures 3 and 4
The figure is an explanatory diagram showing a movement mode of the turntable device. 1a, 1b...turntable, 2...vertical axis,
3... Lower circular bed plate, 4... Telescopic leg, 5... Hydraulic cylinder part, 6... Piston part, 7... Annular grounding part, 8... Annular sliding edge, 9... Middle circular bed plate, 1
0... Upper circular base plate, 11... Connecting rod, 12...
Freely connecting table, 13...Roller, 14...Hydraulic system, 15...Lower base plate, 16...Middle base plate,
17... Upper base plate, 18, 19... Roller, 20...
...Tightening bolts and nuts, 21...Civil engineering construction machinery.

Claims (1)

[Scope of utility model registration request] It consists of a pair of turntables each supported by a plurality of telescoping legs operated by a hydraulic mechanism, and each turntable is connected by a connecting rod with both ends rotatably pivoted around the central axis of each turntable. The turntable device is constructed by allowing each turntable to rotate freely, and further interposing a freely connecting table between the turntables, the upper surface of which coincides with the upper surface of each turntable.