JPS632510Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Purpose of the invention (a) Technical field of the invention The invention relates to a device for driving piles such as sheet piles used in civil engineering construction work.

(b) Regarding conventional technology Most of the conventional pushing devices (or piling devices) of this type have a leader, and because the work is carried out while supporting this leader, the main body of the working machine has always been large. Further, since the main body of the work machine normally does not have the function of transporting the pushing mechanism including the leader, not only the main body of the work machine but also the pushing mechanism are moved by a transportation vehicle. Furthermore, since the main body of the work machine has a carrying function and a long leader is loaded, the structure of the main body of the work machine itself has become extremely large and has become an important device.

(c) Problems to be solved by the present invention In view of the above, the present invention firstly simplifies the device by removing the leader from this type of device, and secondly, the main body of the work equipment is pushed into the mobile crane vehicle. The device has the ability to load and transport a mechanism and allows the pushing device to be moved easily and quickly. Thirdly, it can be used in narrow spaces or obstacles where conventional large machines with complicated mechanisms and leaders cannot work. A structure that facilitates work in places where objects exist or where the ground is weak, that is, the purpose of this invention is to dramatically expand the work range both two-dimensionally and three-dimensionally. That is.

(2) About the structure and operation of the invention (a) About the technical means of the invention The invention was devised based on the above-mentioned purpose, but the main body of the work equipment is a mobile crane truck, and its boom is An excavation mechanism consisting of a driving motor, a sleeve, an earth auger, etc. is removably attached, and a sheet pile pushing mechanism consisting of a hydraulic system, a chuck for sheet piles, its support arm, a mounting frame, etc. is attached to the excavation mechanism so that it can rotate left and right. A sheet pile pushing device that utilizes the loading capacity and mobility of a mobile crane truck, the elasticity of the boom, and the ability to rotate up and down 90 degrees and left and right 360 degrees to maximize the work range. That is. The configuration will be explained in detail below.

(A) About the excavation mechanism The excavation mechanism consists of a drive motor (hereinafter referred to as "motor") 21, its shaft 5 and sleeve 6, a flange 10 formed at the tip thereof, and an earth auger 11. It is removably attached to a rod 3 attached to the tip of a boom 2 of a mobile crane vehicle (hereinafter referred to as a "crane truck") 1 with a pin 4, and a shaft 5 of the motor 21 has a flange 1 at the tip.
0 is externally fitted and fixed with a pin 30 so as to rotate coaxially with the shaft 5, and an earth auger 1 is connected to a flange 10 of the sleeve 6 to constitute an excavation mechanism. 9 is a connecting flange of the earth auger 11, and 12 is a spiral blade.

(B) About the sheet pile pushing mechanism This mechanism is a mechanism that is attached to the top of the sheet pile 22 and acts to push it. The inner cylinder case 15 and the cylinder case 15
The hydraulic device 18 is attached to the inner cylinder case 15 with a set pin 14, and the outer cylinder case 17 is attached to a piston rod 20 of the hydraulic device 18 with a pin 19 at its tip. are connected,
The inner cylinder case 15 is the case 1
It is attached to the sleeve 6 of the excavation mechanism via a support arm 13 formed integrally with the shaft 5 and its mounting frame 8 so as to be rotatable left and right about the shaft 5 as a rotation axis. 7 is a bearing for its rotation.

Next, the outer cylinder case 17 is integrally provided with a chuck 16 for the sheet pile.
0 and a frame body 37 having a roller 38 and provided integrally with the outer cylinder case 17, the roller 38 and the wedge 39 constitute a kind of cam mechanism, and the sheet pile 22 and the roller 38 fitted into the fitting groove 40. The structure is such that a wedge 39 is dropped between the sheet pile 22 and the sheet pile 22.

In the figure, 32 is a handle fixed to the support arm, 33 is a rope, 35 is a hydraulic hose, 23 is a guide pulley for the hose, and 31 is a section of the sheet pile.

(b) Regarding the operation of the present invention As described above, the present invention uses a crane truck 1 as the work equipment body, and a drive motor 21 is attached to the tip of the boom 2 so that the motor 21 rotates coaxially with the shaft 5. This sheet pile pushing device has a configuration consisting of an excavation mechanism equipped with an earth auger 11 via a sleeve 6, and a sheet pile pushing mechanism using a shaft 5 as a rotation axis via the sleeve 6,
Next, the effect will be explained in detail.

First, when pushing the first sheet pile 22, the earth auger 1 is
After making the ground soft by excavating a place where the first sheet pile 22 will be pushed and making a pilot hole, the earth auger 11 is rotated in the opposite direction and attached to the tip of the extraction boom 2. The sheet pile 22 is suspended by a hook 24, and after determining the position and direction, it is lowered, and by the weight of the sheet pile 22, it is erected in a place 28 where a pilot hole is made in front and the ground is made soft. Next, rotate the earth auger 11 to the position where the second pile will be pushed in, and while drilling the pilot hole for the next pile, bring the sheet pile chuck 16 close to the upper end of the sheet pile 22 that was built earlier, and then move the is placed on the inside of the sheet pile 22, and the sheet pile 22 is fitted into the fitting groove 40 provided in the frame body 37, the hydraulic device 18 is activated, the piston rod 20 is slightly extended, and the fitting groove 4 is inserted into the fitting groove 40.
0 is engaged with the upper end of the sheet pile 22, a wedge 39 is inserted between the sheet pile 22 and the roller 38, and the wedge 39 and the roller 38 are connected.
The sheet pile 22 is clamped to the outer cylinder case 17 by this interaction.

After the sheet pile chuck 16 is firmly engaged with the sheet pile 22 in this manner, when the piston rod 20 of the hydraulic device 18 is extended downward, the outer cylinder case 17 is lowered, so that the chuck formed integrally with the case 17 is moved downward. 16 is sheet pile 22
will be pushed into the soil. When the piston rod 20 is extended to the maximum extent and the sheet pile 22 is pushed in, the earth auger 11 is rotated to advance excavation, and at the same time the piston rod 20 is retracted into the hydraulic device 18, and the inner cylinder case 15 is moved to the outer cylinder case. 17
The pushing mechanism is in the same state as when it first engaged and clamped its chuck 16 to the sheet pile 22. Next, the piston rod 20 of the hydraulic device 18 is extended again to push the sheet pile 22. After repeating this operation and pushing the sheet pile 22 to the required depth, the rotation of the earth auger 11 is stopped, and finally, the piston rod 20 of the hydraulic device 18 is suddenly extended, and the earth auger 11 is
After fixing the sheet pile 22 using the pulling reaction force, the piston rod 20 is retracted into the hydraulic system 18, and then the drive motor 21 is reversed to pull out the earth auger 11 and at the same time extend the piston rod 20. The wedge 39 moves upward and is released from engagement with the sheet pile 22 and engagement with the fitting groove 40.

Next, the case of pushing the second sheet pile 22 will be explained with reference to FIG. 6.

The sheet pile 22 is suspended by the boom 2, and its section 31 is first engaged with the section 31 of the sheet pile 22 that was pushed in to build it up, and then the pulley 26 is attached to the upper end of the sheet pile 22 that was pushed in first. The crane hook 24 is fixed to the upper end of the second sheet pile 22.
Rope 3 suspended from and passed around pulley 26
6, the hook 24 is pulled up by a crane, and the second sheet pile 22 is pushed in to the depth that the second sheet pile 22 enters. When the pushing resistance of the sheet pile 22 is balanced (the first pile starts to come out), the pushing operation using the rope 36 is stopped, and the earth auger 11 is then rotated to excavate the next pushing position. The chuck 16 is dug down until it hangs over the top of the second sheet pile 22 built earlier, and then the chuck 16 is hung on the top of the second sheet pile 22 that was built earlier.
The sheet pile 22 is pushed in by repeating the rotary excavation by the earth auger 11 and the pushing operation by the hydraulic device 18 in the same manner as when pushing the second sheet pile 22.

(3) Effects of the present invention The present invention has the above-mentioned structure and operation, and its effects will be described next.

(A) In this invention, the main body of the work equipment is a mobile crane truck, and a sheet pile pushing mechanism and a ground excavation mechanism are installed at the tip of the boom.
Now possible in 360 degrees.

(B) The sheet pile pushing mechanism is configured to rotate 360 degrees left and right using the drive motor shaft as the rotation axis, making it possible to push sheet piles in 360 degrees around the earth auger (excavation mechanism). Ta.

(C) Since the boom of a mobile crane is extendable and can be moved up and down, it has the advantage that the range of distance work starting from the mobile crane is extremely large.

(D) Compared to conventional devices of this type, the present invention eliminates the reader and its auxiliary mechanisms, making the entire device simpler, lighter, and smaller.

(E) Since it is possible to use a lightweight and small crane truck even in work sites where it is difficult for large vehicles to enter, it is easy to work in narrow spaces, on weak land, and in places where there are buried objects that cannot be mounted on large vehicles. It has the advantage of being

(F) There is an advantage that the excavation by the earth auger and the pushing work of the sheet pile by the pushing mechanism can proceed at the same time.

(G) Since there is no need for a leader and the boom of the crane truck can be extended to a long length, it is possible to work over obstacles (for example, railway tracks, streams, ditches, fences, etc.) in the direction of work. There is an advantage to having one.

(H) Also, since the boom of a crane truck can move up and down freely, it has the great advantage of being able to work while avoiding obstacles such as overhead wires and tree branches above the work site.

As described above, the present invention has many advantages over conventional pushing devices in terms of the scope of work, work efficiency, adaptability to the work site environment, economic efficiency of the device, and maneuverability of the device. It has the following advantages.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view, partially cut away, showing a state in which an earth auger is attached to a drive motor and a sheet pile chuck is attached to a sheet pile. Figure 2A is a front explanatory view of Figure 1, B is a perspective explanatory view when the chuck is attached to the sheet pile, and C is the outer cylinder case, sheet pile, and wedge when the chuck is attached to the sheet pile. and a front explanatory view showing the respective positional relationships of the rollers. FIG. 3 is an explanatory cross-sectional view taken along line BB' in FIG. 1. Figure 4 is an explanatory cross-sectional diagram taken along line A-A in Figure 2A, Figure 5 is an explanatory diagram for pushing the first sheet pile, and Figure 6 is an explanatory diagram for pushing the second and subsequent sheet piles. FIG. 1...Mobile crane truck, 2...Boom, 5...
...Drive motor shaft, 6...Sleeve,
8... Mounting frame, 10... Flange provided on sleeve, 11... Earth auger, 13... Support arm for sheet pile chuck and hydraulic system, 14
...Pin, 15 ...Outer cylinder case, 16
...Chick, 17...Outer cylinder case,
18... Hydraulic system, 20... Piston rod, 2
1... Drive motor, 22... Sheet pile,
30...pin, 37...chuck frame, 38...
...Roller, 39...Wedge, 40...Seat pile insertion groove.

Claims (1)

[Scope of utility model registration request] A drive motor 21 is detachably attached to the tip of the boom 2 of the mobile crane 1, and a sleeve 6 is attached to the shaft 5 of the motor 21.
The sleeve 6 includes a hydraulic device 18, an outer cylinder case 17 connected to a piston rod 20 of the hydraulic device 18, and a seat pile provided integrally with the cylinder case 17. A sheet pile pushing mechanism consisting of a chuck 16 is mounted so as to be rotatable left and right about the shaft 5 as a rotation axis, and an earth auger 11 is removably connected to the sleeve 6, and a sheet pile 22 is attached to the chuck 16 for sheet pile. The sheet pile 22 can be suspended, and the sheet pile 22 can be pushed in a 360° direction centering on the mobile crane 1 and over the entire extendable distance of the boom 2, and further in a 360° direction centering on the shaft 5 of the drive motor 21. A sheet pile pushing device characterized in that it is configured so as to be able to do so.