JPS63566B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a soft ground treatment device that treats and stabilizes soft ground such as a reclaimed land.

Generally speaking, there are the following cases in dealing with soft ground.

(1) What to do if the area where the coast, etc. has been dredged and reclaimed is soft.

(2) Treatment of riparian areas.

(3) Treatment of areas where industrial waste is deposited.

Other deep-layer treatments include treatment of submarine ground, but in general cases (1) to (3) above are common, and stabilization treatment has conventionally been carried out using the following methods. That is, as shown in Fig. 1a, a mixer 3 is attached to the front of a self-propelled vehicle 2 to which a crawler (track) 1 is attached, and while the vehicle 2 is running in the direction of arrow A, the soft ground surface B is Stabilization treatment is performed by stirring.

When performing stabilization treatment using the above method, the stabilizer must be mixed while the vehicle 2 is constantly running. However, it is difficult for vehicles to travel at a uniform speed on soft ground. Furthermore, although these types of ground can usually withstand one run of the crawler, if the crawler runs over the same location many times, the ground becomes disturbed and gradually weakens, eventually making it impossible to run on. Therefore, when treating soft ground, it is necessary to minimize the number of trips in the same location. In addition, in the above-mentioned conventional processing device, in order to process part C adjacent to part B, as shown in FIG. However, since the softness of the two is different, there is an inconvenience that the vehicle 2 tilts.

In view of the above circumstances, the present invention aims to provide a soft ground treatment device that can efficiently treat soft ground with minimal movement.
On the bracket installed on the crawler type self-propelled vehicle,
A mixer support rod is provided with its axial direction substantially parallel to the width direction of the vehicle, and the mixer support rod is moved along the mixer support rod in the width direction of the vehicle by a moving means with respect to the vehicle. A mixer frame is provided which can be moved up and down with respect to the vehicle by a vertical means, and a sprocket is attached to the mixer frame between a sprocket attached to a drive shaft rotated by a mixer drive device and a sprocket attached to an agitation shaft. A mixer having a stirring chain with a stirring claw attached thereto is provided protruding from the front of the vehicle with the rotating surface of the stirring chain arranged in a substantially vertical plane parallel to the mixer support rod. be.

An embodiment of the present invention will be described below with reference to the drawings.

2 to 4 show an embodiment of the soft ground processing apparatus according to the present invention, and numeral 11 in the figures indicates a vehicle frame. This vehicle frame 11 includes a frame 11a in the front-rear direction and a frame 1 in the left-right direction.
1b. Floats 12, 12 are provided on both left and right sides of the vehicle frame 11. Self-propelled crawlers 13, 13 of the vehicle are attached around the floats 12, 12.

Further, a driver's cab 14 is provided on the upper part of the vehicle frame 11. In addition, the rear end of the upper part (right side in Figure 2) is equipped with vehicles such as engines and hydraulic pumps.
Drive mechanisms 15 for other parts and devices are loaded and can all be operated from the driver's cab 14.

At the front end of the vehicle frame 11, brackets 16 are rotatably attached to the front end of the vehicle frame 11 so as to protrude forward and at approximately equal intervals in the left-right direction. This bracket 1
A support rod frame 18 having upper and lower mixer support rods 17, 17, which is longer than the width of the vehicle and extends parallel to the left-right direction, is attached to the front end of each of the mixer support rods 6. Further, brackets 19, 19 are fixed to the left-right center of the vehicle frame 11 in front of the driver's cab 14, extending upward and forward at a predetermined interval. Further, hydraulic cylinders 20, 20 are disposed between the upper end of the bracket 19 and the support rod frame 18. In addition, the mixer support rods 17, 17 include a mixer support frame 2.
1 is attached so as to be movable in the left and right direction. A mixer frame 22 is attached to the mixer support frame 21 so as to be vertically movable. Hydraulic cylinders 22a, 22a are disposed between the mixer support frame 21 and the mixer frame 22, and are adapted to move the mixer frame 22 up and down with respect to the mixer support frame 21.

Upper and lower sprockets 23, 24 are provided at one end of the support rod frame 18, and sprockets 25, 26 are provided at the other end, facing the sprockets 23, 24. The sprockets 24, 26 are rotationally driven by hydraulic motors 24a, 26a. Also,
Sprockets 27 and 28 are attached to both left and right sides of the mixer support frame 21. Further, one end of a chain 29 is fixed to one end of the mixer support frame 21 in the left-right direction. This chain 29 has sprockets 23, 27, 24, 26,
28 and 25 in order to form the mixer support frame 2.
1 at the other end.

At the top of the mixer frame 22, there is a mixer drive device (motor, speed reducer, etc.) having a rotation axis in the front and back direction.
30 are provided. Further, below the drive device 30, a drive shaft 31 in the front-rear direction is provided.
This drive shaft 31 is connected to the drive device 3 via a chain 32.
It is designed to be rotationally driven by 0. Further, the drive shaft 31 has a plurality of small sprockets 31.
a is installed. Further, below the drive shaft 31, a stirring shaft 34 is supported by front and rear bearing plates 33, 33 and is oriented in the same direction as the drive shaft 31. This stirring shaft 34 has a plurality of large sprockets 34a facing the small sprocket.
is installed. The above small sprocket 31a
...and the large sprocket 34a... have stirring claws 35a.
Stirring chains 35 to which ... are attached are wound respectively.

The drive device 30, the drive shaft 31, the stirring shaft 34,
A mixer A is constituted by the stirring chain 35.

Further, injection nozzles 36, 36 for injecting a stabilizer such as cement slurry are attached to the left and right sides between the bases of the bearing plates 33, 33. These nozzles 36, 36 and mixer A are arranged so that when mixer A is moving to the right with respect to the support rod 17 in FIG. be done. When mixer A moves to the left, the above is reversed. Further, when the mixer A reaches one end of the support rod 17, the rotation of the motors 24a, 26a and the injection of the stabilizer by the nozzle 36 are stopped.

Next, a method of using the apparatus according to the present invention configured as described above will be explained.

First, the hydraulic cylinders 22a, 22a are operated to lift the mixer A upward, and the hydraulic cylinders 20,
20 rotates the support rod frame 18 to prevent mixer A from coming into contact with the ground. Next, the vehicle is driven into a weak treatment site. In this case, since the float 12 and the crawler 13 are attached to the vehicle, the vehicle can move freely by the crawler 13 without sinking into soft ground (hereinafter referred to as sludge). At the processing site, the mixer A is moved to one end of the support rod 17, and then the hydraulic cylinders 20, 20, 22a, 2
2a to lower mixer A, and insert the lower end of mixer A into the sludge to a predetermined depth. Further, a stabilizer liquid supply pipe such as slurry cement is connected to the nozzles 36, 36. This stabilizer is normally fed from a stabilizer supply facility installed outside the landfill construction site.

The mixer drive device 30 rotates the mixer chain 35 in a predetermined direction, and the motors 24a, 26
a to move the mixer A toward the other end of the mixer support rod 17 and inject the stabilizer into the stirring portion from one of the nozzles 36. When the mixer A reaches the other end of the mixer support rod 17, the vehicle is moved backward by a predetermined distance, the rotational direction of the mixer A is changed, and the mixer A is transversely transported in the opposite direction while injecting a stabilizer from a predetermined nozzle 36. Perform stabilization work again.

By repeating the above operation, as shown in FIG. 5, the area B of the width of the mixer support rod 17 will move the vehicle intermittently, and the mixer A will be sequentially moved sideways on the line. stabilized by Next, the vehicle is moved to the side and area C is stabilized in the same manner as area B.

It is also possible to stop feeding the stabilizer, switch the nozzles 36, 36, start moving the mixer A, set the rotation direction, etc. by remote control from the stabilizer supply facility.

As described above, the soft ground treatment device according to the present invention includes a mixer support rod arranged in a bracket provided on a crawler-type self-propelled vehicle with its axial direction aligned substantially parallel to the width direction of the vehicle, The mixer support rod is provided with a mixer frame that is moved relative to the vehicle in the width direction of the vehicle along the mixer support rod by a moving means, and is raised and lowered relative to the vehicle by a vertical means. The mixer frame has a mixer in which a stirring chain having a stirring claw is stretched between a sprocket attached to a drive shaft rotated by a mixer drive device and a sprocket attached to an agitation shaft, and the mixer frame is connected to the mixer support rod. The rotating surface of the stirring chain is arranged in a substantially vertical plane parallel to the mixer support rod, and the stirring chain, which is provided protruding from the front of the vehicle and has a stirring claw attached thereto, is placed in a vertical plane parallel to the mixer support rod. While rotating, the mixer is continuously moved in the width direction of the crawler-type self-propelled vehicle along the mixer support rod to stabilize soft ground, so it can efficiently stabilize soft ground. Can be done. In addition, the structure is such that the mixer is lowered and the stirring chain inserted into the soft ground is moved continuously in the width direction of the vehicle. Unlike conventional structures, the entire area can be stabilized uniformly and efficiently without leaving a part of the soft ground or having to treat the same part more than once. Furthermore, by making the length of the mixer support rod longer than the width of the vehicle, it is possible to run stably in areas that are sufficiently far away from the crawler tracks from the previous run and the soft ground that has just been treated. It can be done smoothly.

[Brief explanation of the drawing]

Figures 1a and 1b are explanatory diagrams of the conventional soft ground treatment method, and Figures 2 to 4 show an embodiment of the soft soil treatment apparatus according to the present invention. 3 is a plan view, FIG. 4 is a front view, and FIG. 5 is a diagram showing a treatment area by the apparatus of the present invention. DESCRIPTION OF SYMBOLS 11... Vehicle frame, 11a... Frame in the longitudinal direction, 11b... Frame in the left and right direction, 12... Float, 13... Crawler, 14... Cab, 15... Drive mechanism, 16... Bracket, 17... Mixer support rod, 18... Support Rod frame, 19...Bracket, 20...
Hydraulic cylinder, 21...Mixer support frame, 22
...Mixer frame, 22a...Hydraulic cylinder, 23,2
4, 25, 26, 27, 28... Sprocket, 2
4a, 26a...hydraulic motor, 29...chain, 30
...Mixer drive device, 31...Drive shaft, 31a...Small sprocket, 32...Chain, 33...Bearing plate, 34
... Stirring shaft, 34a... Large sprocket, 35... Stirring chain, 35a... Stirring claw, A... Mixer, B, C...
Stable treatment area.

Claims (1)

[Claims] 1 A mixer support rod 17 is provided on a bracket 16 provided on the crawler-type self-propelled vehicle 2 with its axial direction aligned approximately parallel to the width direction of the vehicle 2, and the mixer support rod 17 has a moving means 21 ,23,2
4, 24a, 25, 26, 26a, 27, 28,
A mixer frame 22 is provided which can be moved relative to the vehicle 2 in the width direction of the vehicle 2 along the mixer support rod 17 by a mixer support rod 17, and can be raised and lowered relative to the vehicle 2 by vertical means 20 and 22a.
On the mixer frame 22, a stirring chain 35 having a stirring claw 35a is stretched between a sprocket 31a attached to a drive shaft 31 rotated by a mixer drive device 30 and a sprocket 34a attached to a stirring shaft 34. The installed mixer A is placed on the vehicle 2 with the rotating surface of the stirring chain 35 disposed in a substantially vertical plane parallel to the mixer support rod 17.
A soft ground treatment device characterized by being provided protrudingly from the front part of the soft ground treatment device.