JPS6220335B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for burying sheet piles for earth retention, and particularly when burying thin sheet piles efficiently,
The object of the present invention is to provide a vibration-free and noise-free burial method and device for simultaneously excavating a burial trench and burying the buried soil in soft or collapsible soil.

Concrete, steel, or even wood boards are often used for earth retaining sheet piles, but in order to bury these sheet piles without noise or vibration, a large machine must be used to excavate a burial trench. There was no other way than to bury it, push it in with great force, or use a drill and cylinder with spiral blades to excavate the buried spot and push it in.

In either case, large machines were required and it was extremely difficult to operate in narrow spaces or areas with heavy traffic.

The present invention provides a method and apparatus for burying thin sheet piles or earth retaining sheet piles without vibration or noise, even in soft ground, and without the need for large machinery.

A detailed explanation will be given below with reference to the drawings.

The drawings show an embodiment, and the partition case 5 includes a case side plate 2 whose tip end has a pointed blade shape 1, a screw guide 3 that integrally constitutes this at the front part of this case side plate 2, and its back part. It consists of a case front plate 4 and a bottom plate 16 which are provided in close contact with each other, and a piston 6 is integrally connected inside this partition case 5, and a guide roller 13 as a sheet pile guiding mechanism is provided on the rear inner surface, and a guide roller 13 is provided on the front inner surface. A plurality of hydraulic cylinders 7 in two rows each having a cylinder case 12 having a sheet pile sending projection 22 and a seal board 14 attached to the rear end are provided with an appropriate distance 11 between the rows for inserting the sheet pile 8. Case front plate 4
It is also attached to the mounting brackets 20, 20' and pins 21, 21'.

On the other hand, the screw conveyor 10 has a drive motor 9 mounted and connected to its head, is erected at the front of the screw guide 3, and has a support arm 1 provided on the case side plate 2.
A screw conveyor adjustment mechanism A consisting of a screw conveyor 7 and a hydraulic cylinder 15 is rotatably connected to a drive motor 9 via a link 18.

Note that the rear part of the partition case 5 is in an open state.

Further, a guide shoe may be installed as the sheet pile guiding mechanism.

The sheet pile burial trench excavation device having the above configuration is placed in the starting shaft, earth and sand are put into the rear groove of the partition case 5, the hydraulic cylinder 7 is operated, and the cylinder case 12 is moved to the rear end position of the partition case 5. This is compacted to form a reaction body, and then the sheet pile 8 is inserted between the cylinder rows 11, and the screw conveyor 1
0 is rotated and the hydraulic cylinder 7 is actuated to obtain a reaction force on the case 12 to cause the excavation device to dig.

In such a case, the sheet pile delivery projection 22 sends out the sheet pile 8 from the bottom plate 16 into the groove.

Next, the cylinder case 12 is advanced to the front end position of the cylinder 7, earth and sand is thrown into the grooves on both sides of the sheet pile 8, and the cylinder case 12 is again used to compact the input earth and sand to harden the earth and sand on both sides of the sheet pile 8 and securely bury the sheet pile. . When the excavation equipment excavates, the guide rollers 13 support the sheet pile 8 from both sides to prevent it from falling sideways, and the seal board 14 closes the gap between the sheet pile 8 and the cylinder case 12 to prevent earth and sand from entering between the two cylinder cases. It has an effect.

Next, the sheet pile is inserted again between the cylinder rows 11, and the screw conveyor 10 and the hydraulic cylinder 7 are operated to make all the equipment dig, and the sheet pile is sent into the burial trench.The same operation as described above is repeated to ensure and quickly bury the sheet pile. I will do it.

When burying sheet piles, especially in the case of thin sheets, the sheet piles may be tilted to either the left or right, or the buried position may be shifted in the burying direction, or the sheet piles themselves may be twisted when erected. Depending on the degree of inclination, twisting, etc. of the sheet pile, by operating either the left or right hydraulic cylinder 7, the cylinder case 12 is used to adjust the degree of compaction of the earth and sand on both sides of the sheet pile. It is also possible to implant it back into the body. Of course, even sheet piles with considerable thickness may be erected tilting to the left or right or crossing the burial direction if the soil is soft, so the consolidation density of the earth and sand on both sides of the sheet piles is adjusted by operating the cylinder case 12 using the cylinder as described above. It is also possible to correct and bury it in a predetermined position and orientation.
During burying work, if it is necessary to dig a deep burial trench, the piston of the cylinder 15 may be lowered or the support arm 17 may be tilted forward; on the other hand, if the trench is to be dug shallowly, the piston of the cylinder 15 may be raised. Further, the front part of the case side plate 2 and the screw guide 3 prevent the screw conveyor 10 from swinging laterally, and the pointed blade part 1 excavates the side wall of the buried trench upright and smoothly, thereby helping the entire apparatus to dig. The screw conveyor 10 easily transports excavated earth and sand to the ground. As described above, in the case of the present invention, a large machine is not required, and only a small part of the equipment, such as the drive motor, is exposed above the ground. This invention has an epoch-making effect in that it is possible to perform the insertion, reliable burial by compacting the earth and sand on both sides, and correction of the burial posture of the buried sheet pile quickly and consistently with the same device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a _single screw conveyor, and FIG. Figure 3 is a front view. Figure 4 is a plan view of two screw conveyors.
The figure is a partially longitudinal sectional view taken along line A- _A1 , and FIG. 6 is a front view thereof. Figure 7 is an explanatory diagram of the operation, where A is the state in which the first sheet pile is transported by the cylinder, B is the state in which the cylinder is operated to consolidate the earth and sand on both sides of the sheet pile, and C is the state in which the device is moved and then the first sheet pile is transported. D is a schematic plan explanatory diagram showing a state in which the sheet pile is being transported for the second time, and D is completely transported.

Claims (1)

[Scope of Claims] 1. Both case side plates 2 having tip portions shaped like sharp edges 1
The piston 6 is placed in a partition case 5 that is integrally formed with a semicircular screw guide 3 and a case front plate 4 and a bottom plate 16 that are provided in close contact with the back of the screw guide 3. A plurality of two-row hydraulic cylinders each having a cylinder case 12 which is integrally connected and has a sheet pile guide mechanism 13 on the rear inner surface, a sheet pile delivery projection 22 on the front inner surface, and a seal board 14 attached to the rear end. 7 is attached to the case front plate 4 with an appropriate gap 11 for inserting the sheet pile 8, and a drive motor 9 is mounted and connected to the other head of the screw conveyor 10.
is installed upright at the front of the screw guide 3, and the drive motor 9 and partition case 5 are rotatably connected to the adjustment mechanism A of the screw conveyor via a link 18. After installing the excavation equipment in the starting shaft and inserting the sheet pile 8 between the cylinder rows 11, earth and sand are thrown into the rear groove of the partition case 5, the hydraulic cylinder 7 is operated, the piston 6 is extended, and the cylinder case 12 is opened. The input soil is then consolidated to form a reaction force, and then the screw conveyor 10 is rotated, and the consolidated earth and sand is used as a reaction force to obtain a reaction force in the cylinder case 12 of the hydraulic cylinder 7, and the excavation equipment is activated. advance. Next, the piston 6 is placed in the cylinder 7, the cylinder case 12 is moved forward, earth and sand are thrown into the grooves on both sides of the sheet pile 8, and the cylinder 7 is operated to compact the input earth and sand with the cylinder case 12 to ensure that the sheet pile 8 is buried and consolidated. Prepare earth and sand as the next reaction force. Next, the next sheet pile is inserted between the cylinder rows 11 while bringing it into close contact with the front part of the buried sheet pile, and the screw conveyor 10 is rotated again, and the hydraulic cylinder 7 is operated to excavate the entire apparatus using the consolidated earth and sand as a reaction force, A method for burying a sheet pile for earth retention, characterized by inserting a sheet pile and compacting the input soil on both sides of the sheet pile, and repeating this operation to excavate a sheet pile burying trench and bury the sheet pile. 2 Both case side plates 2 whose tips are shaped like sharp blades 1
The piston 6 is integrated in a partition case 5 whose front part is integrally constructed with a semicircular screw guide 3 and a case front plate 4 and a bottom plate 16 provided in close contact with the back of the screw guide 3. A plurality of two-row hydraulic cylinders each having a cylinder case 12 having a sheet pile guide mechanism 13 on the rear inner surface connected to the rear end, a sheet pile sending projection 22 on the front inner surface, and a seal board 14 attached to the rear end. 7, the appropriate row spacing 11 for inserting the sheet pile 8
A screw conveyor 10 is installed in front of the screw guide 3, and the drive motor 9 is mounted on the other head and connected to the case front plate 4, and the drive motor 9 and the partition case 5 are linked. A sheet pile buried trench excavating device configured to be rotatably connected to an adjustment mechanism A of a screw conveyor via a screw conveyor.