JPS6227206B2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, cylindrical steel plate cells used for seawalls are
As a storage cell, it is filled with sand and placed on the ground.
Since it penetrates through natural settlement and does not forcefully penetrate into the ground, stable settlement is required for a long period of time in order to obtain the strength of the revetment, making it unsuitable for rapid construction.

In addition, there is a steel sheet pile cell construction method in which straight steel sheet piles are assembled into a cylindrical shape and penetrated into the ground, but it requires a great deal of time and effort to assemble and erect the steel sheet piles, and the sealing properties of the cells themselves are also poor. There were some drawbacks such as:

Driving devices for steel plate cells have been developed and proposed in the past, but it is difficult to place the driving device at an appropriate position on the steel plate cell so as not to apply uneven driving force onto the steel plate cell. In addition, it is difficult to match the size (diameter) of the steel plate cell, and the driving performance
There are problems such as contributing to a decrease in efficiency.

The present invention is a steel sheet cell driving device developed to address the above-mentioned problems, and includes three or more horizontal connecting legs that can be changed in length and length around the pedestal of the synchronizer in the radial direction. a vibrating pile driver is fixed to each end of each of the horizontal connecting legs, and a chuck mechanism for gripping the upper end of the steel plate cell is attached to the lower side of each of the vibrating pile drivers; , characterized in that each drive shaft of each of the vibrating pile drivers is connected to a gear transmission mechanism of the synchronizer disposed on the pedestal via an intermediate transmission shaft to drive the vibrating pile drivers synchronously. This system improves the ability to place three or more vibrating pile drivers onto steel plate cells, improves the driving performance, and makes it possible to apply to steel plate cells of various sizes, thereby solving the above-mentioned problems. .

The present invention has the above-mentioned configuration, in which a vibrating pile driver is fixedly installed at each tip of each of three or more horizontal connecting legs that protrude in a radial direction around the frame of the synchronizer, Since a chuck mechanism is attached to the lower side of each vibratory pile driver, when the upper part of the steel plate cell is gripped by each chuck mechanism, three or more of the vibratory pile drivers are attached to the steel plate cell. The weight of each vibrating pile driver is equally distributed and arranged on the steel plate cell by the supporting force of the mount and the horizontal connecting leg, and each vibrating pile driver has an intermediate conduction shaft and The rotational phase is kept the same by the synchronous transmission by the gear transmission mechanism of the central synchronizer, that is, it is synchronized, and a large synthetic vertical vibration is evenly distributed on the steel plate cell, and the steel plate cell quickly sinks into the ground. Large-diameter steel plate cells can be easily penetrated into the ground, shortening the construction period, providing short-term ground stability, and improving driving performance and efficiency as well as the placement performance of each vibratory pile driver on the steel plate cells. has been significantly improved.

The horizontal connecting legs that protrude in the radial direction around the pedestal of the synchronizer can be changed in length or length, so
The installation position of each vibrating pile driver, which is fixed at the tip of each horizontal connecting leg, can be adjusted according to the size (diameter) of the steel plate cell, making it suitable for easy placement in steel plate cells of various sizes. With this, driving force can be applied effectively. In addition, the supporting force of each vibrating pile driver and each chuck mechanism by the above-mentioned frame and each horizontal connecting leg significantly increases the rigidity against vibration deformation of the upper edge of the steel plate cell, increasing the operational reliability of driving. It is being

Hereinafter, the present invention will be explained with reference to illustrated embodiments.

1 is a cylindrical steel plate cell, 2 is a vibrating pile driver 3 fixedly installed on the upper part, and a chuck mechanism, that is, a chuck 4 on the lower part.
Reference numeral 6 denotes a stand for the synchronizer 7, and each tip of three or more (six in the figure) horizontal connecting legs 5 protrudes radially around the stand 6 of the synchronizer 7. At the same time, a vibrating pile driver 3 is fixedly installed via a pedestal 2, and a pedestal 2 is attached to the bottom of each vibrating pile driver 3.
The structure is such that a chuck mechanism (chuck 4) is attached to grip the upper end of the steel plate cell 1 through a ), it is possible to replace it with a longer or shorter one depending on the size (diameter) of the steel plate cell 1.

A synchronizer 7 is disposed on the pedestal 6, and the synchronizer 7 has a large-diameter bevel gear 9 in the center of a synchronizer frame 8, as shown in FIG. A required number of small-diameter bevel gears 12 are fixed to a shaft 11 and arranged radially so as to mesh with the bevel gears 9, each of which is fixed to one end of a rotating shaft 14 supported by a bearing 13 on the machine frame 8. Each other end flange 1 of each rotating shaft 14 has a gear transmission mechanism as shown in FIG.
5 and each drive shaft (motor shaft 16 or weight shaft 17, end flange 18) of each of the vibrating pile drivers 3, an intermediate transmission shaft 19 (propeller shaft) is connected. The drive shaft (motor shaft 16 or weight shaft 17) of the vibrating pile driver is connected via the intermediate transmission shaft 19 and the flange 15 through the meshing of the bevel gear 12 and the bevel gear 9, resulting in a synchronous drive. The rotational phase of the machine 3 is kept the same and synchronized, so that a large combined vertical vibration is generated.

The drive shaft of the vibrating pile driver 3 connected to the intermediate transmission shaft 19 may be the motor shaft 16 or the weight shaft 1.
7, and the weight shaft 17 is the axis of the excitation weight (not shown) of the vibrating pile driver 3, and in the case of the weight shaft 17, it is directly connected to the intermediate conduction shaft 19 via a flange. You can connect by doing this.

In addition, in the case of the motor shaft 16, the end flange 1
8 can be conductively connected to an intermediate transmission shaft 19 by a sprocket, a chain, a sprocket (not shown), etc., and in this case, the tip side of the intermediate transmission shaft 19 is bearing on the vibrating pile driver 3 side. In the illustrated case, a structure in which the weight shafts are connected is shown. Furthermore, in response to the replacement of the horizontal connecting shaft 5 with a longer or shorter length, the intermediate transmission shaft 19 is also replaced by appropriate means.

A hanging device 20 is fixed to the upper end of each of the vibrating pile drivers 3, a buffer 22 is connected to each of the lifting devices 20 via a wire rope 21, and the upper end of the buffer 22 is connected to a ring-shaped hanging device 23. It is installed at the lower end of the circumference at equal intervals. Furthermore, shackles 24 are disposed at equal positions on the upper end of the hanging fitting 23 on the circumference, wire ropes 25 are connected to each of the shackles 24, and each of the wire ropes 25 is hung on a crane hook 26.

By using the illustrated device, a cylindrical steel plate cell 1 is formed.
When penetrating into the ground, the device is suspended via the crane hook 26 onto the steel plate cell 1 placed on the ground, the pedestal 2 is positioned radially at the upper end of the steel plate cell 1, and the chuck 4 Steel plate cell 1
When each vibrating pile driver 3 is driven after grasping the upper edge, the rotation of the drive shaft (motor shaft 16 or weight shaft 17) of each vibratory pile driver 3 is caused by the flange 18, Intermediate conduction shaft 19, flange 1
5, the bevel gears 12 and 9 are connected to each other by meshing, resulting in synchronous drive, so that the rotational phase of each of the vibrating pile drivers 3 is the same, a large combined vertical vibration is generated, and the large diameter steel plate cell 1 is also rapidly moved. penetrated into the ground.

The plurality of mounts 2, that is, the vibrating pile drivers 3, which are arranged radially at the upper end of the steel plate cell 1, are connected to a synchronizer which is arranged at the center of the steel plate cell 1 via each horizontal connecting leg 5. By being connected to the pedestal 6, the rigidity of the upper end of the steel plate cell 1 against vibration deformation is increased.

The shock absorber 22 transmits the lower weight and pull-out resistance to the hanging fixture 24 while mitigating the vibration transmitted from the vibrating pile driver 3 via the hanging fixture 20 and the wire rope 21. The load is concentrated and transmitted to the crane hook 26 via the shackle 24 and wire rope 25.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the steel plate cell driving method according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a cross-sectional plan view showing details of the synchronization device. . 1... Steel plate cell, 3... Vibrating pile driver, 4... Chack mechanism (chuck), 5... Horizontal connecting leg, 6
... Frame (synchronization device), 7 ... Synchronization device, 9,1
2... Gear transmission mechanism, 16, 17... Drive shaft (motor shaft, weight shaft), 19... Intermediate transmission shaft.

Claims (1)

[Claims] 1. Around the frame of the synchronization device, the length can be changed to 3.
A number of horizontal connecting legs are provided that protrude in the radial direction, and a vibrating pile driver is fixed to each tip of each of the horizontal connecting legs,
A chuck mechanism for gripping the upper end of the steel plate cell is attached to the lower side of each of the vibratory pile drivers, and a gear transmission mechanism of the synchronizer disposed on the mount is connected to each drive of each of the vibratory pile drivers. A steel plate cell driving device characterized by a configuration in which the shafts are connected via intermediate transmission shafts and the vibratory pile drivers are driven synchronously.