JPH0542117Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ground improvement machine that mixes a hardening agent such as cement milk into soft ground, and particularly relates to a vehicle body and a mounting structure for a power unit mounted thereon.

(Prior Art) A conventional ground improvement machine injects the hardening agent while stirring the ground so that the hardening agent is uniformly dispersed into the ground, thereby improving the hardened ground. It's something you get. Conventionally, the body of a soil improvement machine was constructed integrally over its entire length, and in addition to the driver's seat and stirring device, there was also a prime mover with a large output corresponding to the maximum ground hardness expected to be worked on, and a rotating motor driven by this. It was equipped with a power plant consisting of a hydraulic pump. In addition, in the soil improvement machine, since the stirring device uses a larger power than the turning device or the traveling device, the output of the power device is determined by the stirring device.

However, the hardness and geology of the ground to be improved vary, and when working on soft ground with low hardness, such as reclaimed ground in a swamp, the output of the stirring device is small, and it is necessary to drive a high-output power device. However, there is a problem in that there is a waste of fuel.

(Problems to be solved by the invention) The present invention was made in view of these problems, and it is possible to perform suitable work according to the hardness of the ground to be worked on using one soil improvement machine. The purpose of the present invention is to provide a soil improvement machine that can be used to improve the soil and be economical.

(Means for solving the problem) In order to achieve this purpose, the ground improvement machine of the present invention has a front body equipped with a stirring device and a power unit including a prime mover. The rear body is divided into a rear body, the rear body equipped with a power unit is made into a unit, multiple types of power units with different outputs are prepared, and a unit selected from the multiple types is attached to and detached from the front body. It is characterized by having a structure that allows it to be attached freely.

(Example) The drawings show an example of the present invention, and Fig. 1 is a plan view mainly showing the vehicle body and the equipment mounted thereon, and Fig. 2 is a side view showing the entire ground improvement machine. . In these figures, reference numeral 1 indicates an undercarriage, and although the illustrated example shows a crawler type, a structure in which a crawler belt is wrapped around a float may also be used. Reference numerals 3A and 3B are a front body and a rear body which are divided according to the present invention. In this embodiment, the front body 3A has a swing device 2 on the lower traveling body 1.
It is configured as an upper revolving body installed through the The front vehicle body 3A and the rear vehicle body 3B have flanges 4 and 5 on corresponding parts on the left and right, and by inserting pins 6 into pin holes provided at the top and bottom of each flange 4 and 5, the rear The vehicle body 3B is detachably attached to the front vehicle body 3A.

A driver's seat 7 and a stirring device 8 are attached to the front vehicle body 3A. The stirring device 8 of this embodiment has a vertical stirring shaft 2
The vertical type with 0 is shown, and the second
As shown in the figure, a movable support stand 11 is attached to a frame 9 protruding forward from the front vehicle body 3A so as to be movable back and forth by a drive device such as a hydraulic cylinder 10. A bracket 12 is fixed, and an intermediate bracket 14 is provided so as to be rotatable back and forth around a pin 13 provided on the bracket 12 facing left and right, and a leader 16 is mounted around a pin 15 provided on the intermediate bracket 14 facing forward and backward. The leader 16 is mounted so as to be tiltable left and right, and the leader 16 can be tilted back and forth by means of a hydraulic cylinder 17 installed between the movable support base 11 and the leader 16, and can take a lying position when moving as shown by the two-dot chain line a. Further, the left and right tilting is performed by a hydraulic cylinder 18 installed between the leader 16 and the intermediate bracket 14.

Further, a driving device 21 for rotating a stirring shaft 20 to which a stirring blade 19 is detachably attached is attached to the lower part of the leader 16, and a pushing rotary chuck device 22 for rotatably holding the stirring shaft 20 is attached to the leader 1.
The rotating chuck device 22 is connected to a chain 26 that is hung on sprockets 24 and 25 that are attached to the lower and upper parts of the leader 16, respectively, and the lower sprocket 24 is attached to the back surface of the leader 16. The rotary chuck device 2 is rotated by a hydraulic motor 23.
2 moves up and down, supplies the hardening agent sent from a hardening agent supply machine (not shown) into the stirring shaft 20 through the hose 27 connected to the rotary chuck device 22, and pours the hardening agent into the ground from the lower end of the shaft. The curing agent is injected into the soil, and the hardening agent is uniformly dispersed while stirring the soil using a driving device 21.

As shown in FIG. 1, the front vehicle body 3A further includes a motor battery 30, an instrument battery 31, a curing agent flow rate detector 32, a motor starting relay box 33, and an instrument regulator and relay. A control box 34 including, etc.
Instrument battery switch 35 and flow rate converter 3
6 and relay boxes 37 and 38 are mounted. These are commonly used regardless of the specifications of the device mounted on the rear vehicle body 3B.

A prime mover 40 having an instrument generator 41 and a hydraulic pump 42 driven by the prime mover 40 are mounted on one side of the rear vehicle body 3B, and a hydraulic oil tank 43 of the hydraulic pump 42 and a hydraulic pump 42 are mounted on the other side. 40 fuel tanks 44 are installed, and furthermore, operation system solenoids 45, 46, a solenoid system relay box 47, and various filters 48 to 50 are installed.
In the intermediate recess, there is a main valve 51 for controlling running, turning, rotation of the stirring shaft, etc., and a solenoid valve 52 for switching between high-speed rotation and low-speed rotation of the stirring shaft 20.
An accumulator 53 is installed.

Rear vehicle body 3B and prime mover 4 mounted on it
0, the hydraulic pump 42, the hydraulic oil tank 43, the fuel tank 44, and the other devices mentioned above are assembled into a unit and installed on the front body 3A, and each unit is designed according to the ground hardness and geology. Multiple types are available with different scales and weights, and the one with the appropriate output and weight that corresponds to the ground hardness and geology to be worked on is selected and installed. Hydraulic hoses of the front vehicle body 3A and rear vehicle body 3B are connected through joints, and cables are connected through connectors.

In addition, conventional models use a power unit with a large output, so they are heavy, and they are also equipped with large-capacity hydraulic oil tanks, fuel tanks, etc., which increases the vehicle weight and hardness. At sites where the rear car body is small, the car body sinks and tilts, making it difficult to position the stirring device and making it difficult to spread the curing agent deep and evenly into the ground. By reducing the weight of the 3B and the units installed on it, the smaller the output of the power plant, the lower the total weight of the soil improvement machine when working on soft ground. This prevents the curing agent from sinking into the ground, makes it easy to position the stirring device, and allows the curing agent to be uniformly diffused deep into the ground. When using a light weight rear body 3B and equipment mounted on it, the ground improvement machine should be arranged so that the center of gravity of the entire rear body 3B and equipment mounted thereon is located at the rear. Care is taken to ensure that the overall balance is not lost.

In the above embodiment, the stirring device 2 is provided and the stirring device has the vertical stirring shaft 20. However, the present invention does not have the turning device 2, and the front vehicle body is attached to the frame of the undercarriage 1. It can also be applied to those to which 3a is directly attached.

(Effects of the invention) As described above, the present invention divides the body of the soil improvement machine into the front body on which the driver's seat and soil stirring device are attached, and the rear body on which the power unit including the prime mover is mounted. , multiple types of units equipped with power plants with different outputs were prepared for the rear car body, and the structure was such that the unit selected from the multiple types was removably attached to the front car body, so that the hardness of the ground to be improved could be improved. By installing a unit equipped with a power unit with an output suitable for the geology, even when working on soft ground, fuel is not wasted, fuel costs are reduced, and economical improvements are achieved. achieved. Furthermore, according to the present invention, one soil improvement machine can handle various hardnesses and geological features, so economy can be achieved in this respect as well.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the soil improving machine according to the present invention, centering on a vehicle body and equipment mounted thereon, and FIG. 2 is a side view of the embodiment.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. The body of the soil improvement machine is divided into a front body on which an agitation device is attached and a rear body on which a power unit including a prime mover is mounted, and the rear body on which the power unit is mounted is a unit. A ground improvement machine characterized by having a structure in which a plurality of types of units with different output power units are prepared, and a unit selected from the plurality of types is detachably attached to a front vehicle body. 2. The soil improvement machine according to claim 1, wherein the weight of the unit is reduced as the output of the power unit decreases.