JPH0512348Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a soft ground improving machine that mixes a hardening agent such as ready-mixed concrete or cement into soft ground such as a reclaimed land.

(Prior art) A soft ground improvement machine has a stirrer attached to the front of a self-propelled lower body that has a float equipped with tracks and mixes the soil hardening agent into the soft ground.
An upper vehicle body is installed on the lower vehicle body, and a driver's cab, a prime mover, etc. are mounted on the upper vehicle body. Conventionally, the above-mentioned agitator has been used for surface layer use (for example, a 2 m
A trencher-type agitator (within 7 m) or a vertical-type agitator for deep layers (within about 7 m) with a stirring blade attached to a vertical rotating shaft were installed, and each of these was configured as a separate ground improvement machine.

For this reason, the machine user has had the problem of having to prepare two types of soil improving machines in order to deal with the difference in depth.

(Problems to be solved by the invention) The present invention has been made in view of the above problems, and aims to provide a soft ground improvement machine that can improve both surface and deep ground with one machine. With the goal.

(Means for Solving the Problems) The present invention has a guide frame attached to the front part of a self-propelled lower vehicle body having a float in a direction transverse to the lower vehicle body, and a transverse frame movable along the guide frame. A trencher or a vertical agitator is attached to the transverse frame in a replaceable manner, and a drive device for moving the transverse frame is provided with the trencher,
The apparatus is characterized in that it is equipped with a speed change means that can set a speed suitable for moving the vertical type stirrer, and the trencher and the vertical type stirrer can be exchanged with respect to the transverse frame, and the speed can be set to a suitable speed for each. Since it can be moved horizontally, surface and deep ground improvement is possible with one machine.

(Example) Figures 1 to 3 are a side view, a top view, and a front view, respectively, showing an example of the soft ground improving machine according to the present invention with a trencher type agitator attached. 1 is a lower car body, 2 is an upper car body, and the lower car body 1 is made up of a pair of floats 3, 3, two front and rear transverse beams 4, 4 fixed through the left and right floats 3, 3; The main longitudinal beams 5, 5 fixed near the floats 3, 3 of 4, the upper vehicle body mounting table 6 fixed between the main longitudinal beams 5, 5, and the horizontal beams 4, 4 are constructed and fixed at both ends. The hydraulic traveling motor 8 is wound around the auxiliary longitudinal beams 7, 7, the driving wheels 20, the driven wheels 21, and the receiving wheels (not shown) around the floats provided before and after the floats 3, 3. , 8, respectively. In this example, one pair of floats 3 is provided, but two or more pairs may be provided.

A trencher type agitator 10A or a vertical type agitator 10B (see FIGS. 6 and 7) is replaceably attached to the front part of the lower vehicle body 1 by the following mechanism. A guide frame 12 for moving the agitator is attached to a bracket 11 fixed to the front part of each of the vertical beams 5, 7, and a pin 14 is attached to the bracket 11 by a hydraulic cylinder 13 installed between the upper part of the guide frame 12 and the beams 5, 7. It is installed so that the tilt angle can be adjusted around the center. A transverse frame 15A is attached to the guide frame 12 so as to be movable left and right via guide rollers (not shown), and a moving device for the transverse frame 15A is attached to the back surface of the guide frame 12 and can be used selectively. Two large and small hydraulic motors 16A (for trencher),
16B (for vertical), a sprocket 17 attached to the left and right ends of the guide frame 12 and the transverse frame 15, and a sprocket 17 that was wrapped around between these sprockets 17 and connected at both ends to the left and right ends of the guide frame 12. Consisting of a chain 18 and a driving sprocket 16a rotated by the hydraulic motor 16A or 16B and meshing with the chain 18,
By operating the hydraulic motor 16A or 16B, the transverse frame 15A can be moved left and right.

Although the agitators 10A and 10B can be attached to the transverse frame 15A, in this embodiment,
In order to increase the range of elevation of the agitators 10A and 10B, an elevating frame 15B is attached to the transverse frame 15A so that it can be raised and lowered freely by a hydraulic cylinder 60 (that is, as shown in FIG. 6, a slider 15b on the back side of the elevating frame 15B
is attached so as to be slidable along the guide rail 15a of the transverse frame 15A), and the support portions of the agitators 10A and 10B are attached to the front part of the elevating frame 15B. That is, as shown in FIGS. 4 and 5, mounting plates 48 having bolt holes 47 are fixed to four locations on the left, right, top and bottom of the lifting frame 15B, and each mounting plate 48 has a flange at the base end of the arm 23. 23a are connected by bolts 50.

When installing the trencher type agitator 10A, the tip of each arm 23 is attached to the agitator 10A.
It is connected to the bracket 22a on the back side of the support frame 22 of A with a pin 62, and the stirrer 10 is connected to the support frame 22.
Attach the main body 24 of A. As shown in FIGS. 1 to 3, a drive shaft 26 rotated by a hydraulic motor 25 is attached to the main body 24, and a plurality of vertical frames 27 are fixed to the lower part of the main body 24. A driven shaft 28 is rotatably attached to the lower part, and the drive shaft 26
The chain 31 is wound around the sprockets 29 and 30 which are fitted as two sets on the driven shaft 28, and a plurality of stirring tools 32 connected between the pair of chains 31 and 31 are placed at intervals around the entire circumference of the chain. When the hydraulic motor 25 is operated, the chain 31 rotates together with the stirring tool 32 to stir the soft ground.

On the other hand, in the case of a vertical stirrer, as shown in FIG. 6 and FIG.
8 with pins 62, the elongated support frame 52 is detachably attached to the elevating frame 15B.

The support frame 52 has guide rails 52 on both sides thereof.
a, which is slidably engaged with the slider 64 of the main body 63 of the agitator 10B along the guide rail 52a, and the elevating device of the main body 63 is a reducer attached to the back surface of the support frame 52. Hydraulic motor 6
5. Rotating shaft 6 rotated by the hydraulic motor 65
6. Sprocket 6 attached to the rotating shaft 66
7. Rotating shaft 6 attached to the top of the support frame 52
8. Sprocket 6 fitted to the rotating shaft 68
9. A chain 70 that runs around both sprockets 67 and 69, a rotating shaft 71 attached to the lower part of the support frame 52, a sprocket 72 fitted to the rotating shaft 71, and a sprocket 72 and the upper rotating shaft 68. The chain 73 is connected to the main body 63, and by rotating the hydraulic motor 65 in the forward and reverse directions, the main body 63 becomes a support frame. It is configured to move up and down along 52.

Two rotating pipes 75 having a fresh concrete injection port 74 and a hydraulic motor 76 for rotating these in opposite directions are attached to the main body 63.
A hollow rotating shaft 78 that also serves as a feeder for fresh concrete is connected to the lower end of the rotating tube 75 by a flange connection 77, and the rotating shaft 78 is mounted on a frame 79 attached to the lower part of the support frame 52. Guide hole 8
0, stirring blades 81 are radially attached to the lower end of the rotating shaft 78, and a fresh concrete spout is provided.

As shown in FIG. 1, the upper vehicle body 2 has a longitudinal position adjustment device for the mounting table 6, which is comprised of a hydraulic cylinder 56 interposed between the main longitudinal beam 5 and the mounting table 6 on the lower vehicle body 1. A driver's cab 35 is installed at the front of the vehicle body frame 34, and behind the driver's cab 35 of the vehicle body frame 34 are a prime mover 36, a hydraulic tank 37, and a power source. A unit 38 and a hydraulic oil tank 39 are mounted, as well as a generator 40 and a compressor 41 as required.

In FIG. 1, 42 is a hydraulic hose 43 for supplying hydraulic oil to the actuator used in the agitator 10A, a pipe for supplying fresh concrete into the ground and compressed air together with it, or an electric actuator instead of a hydraulic actuator. This is a hose attachment frame that supports cables and the like without hanging down when using type equipment, and the hose attachment frame 42 has two frames 42A and 42B that are rotatably attached to a pin 4 in the middle.
5, and the other end of each frame 42A, 42B is connected to the upper vehicle body 2 and the transverse frame 15A, respectively, via joints 44, 46 that can rotate and move up and down.
It can move following the horizontal movement of the transverse frame 15A.

82 is the traverse hydraulic motor 16A or 16
This is a flexible support device that supports a hydraulic hose that supplies hydraulic oil to B, and these are rotatably connected in the middle by a pin 83 to form a mountain shape, and the other end is connected to the above-mentioned mounting table 6 and A pin 8 is attached to each of the main longitudinal beams 5 or an integral part thereof.
4 and 85, they are rotatably connected. Note that if an electric motor is used as the traverse motor, a cable will be attached to this support device 82.

FIG. 8 shows a hydraulic circuit for the agitators 10A and 10B, where 86 is a hydraulic power source provided in the prime mover 36, 87 is a control valve for the hydraulic motors 16A and 16B, and 88 and 89 are secondary sides of the control valve 87. Rapid joints provided in pipes 90 and 91, and 92 and 93 are hydraulic motors 1 for trencher.
Quick joints 96 and 97 are provided in pipes 94 and 95 connected to 6A, and 96 and 97 are vertical hydraulic motors 1
6B, and the quick joints 88 and 89 are provided in the pipes 98 and 99 connected to the joint 9.
2,93 or 96,97.

100 is a clutch that transmits the output of either of the hydraulic motors 16A, 16B to the sprocket 16a, and the clutch 100 has a shaft 102 that is moved in the axial direction by a clutch lever 101;
Clutch plates 10 are attached to both ends of the shaft 102 and engaged with clutch plates 103 and 104, respectively.
5,106, one clutch plate 105
A chain 109 is routed around a sprocket 107 mounted coaxially with the clutch plate 103 facing the other clutch plate 103 and the output sprocket 108 of the trencher hydraulic motor 16A. A chain 113 is routed around the sprocket 110 and the output sprocket 112 of the reducer 111 attached to the vertical hydraulic motor 16B, and a sprocket 114 fitted on the shaft 102 and a sprocket 115 coaxial with the sprocket 16a are connected.
The chain 116 is passed around.

In this soil improvement machine, when a trencher type agitator is used as the agitator 10A as shown in FIGS. 1 to 3, a relatively large trencher hydraulic motor 16A is used as shown in FIG.
Joints 88 and 89 are connected to joints 92 and 93 of conduits 94 and 95 of hydraulic motor 16A, respectively, and clutch plates 103 and 105 are engaged. Then, cement is spread on the ground, and the agitator 10
The hydraulic motor 25 of A is operated to rotate the chain 31 and the agitator 32, and while embedding cement in the ground, the hydraulic motor 16A for traverse is operated to move the agitator 10A along the guide frame 12, for example.
When the guide frame 12 is traversed at a speed of about 10 m/min and reaches either the left or right end of the guide frame 12 as shown in a or b in FIGS. 2 and 3, the hydraulic cylinder 6
0 and 51 in the upward direction of the agitator 10A to raise the agitator 10A to the ground as shown in c in Fig. 1, operate the travel hydraulic motor 8 to move the vehicle backward by the longitudinal width of the agitator 10A, and then The control valve 87 is switched to rotate the hydraulic motor 16A in the opposite direction to that described above, the agitator 10A is moved in the opposite direction, and the chain 31 of the agitator 10A is rotated.
Repeat the process of embedding cement while rotating in the opposite direction. Note that in some cases, a trencher is used, and in some cases, the soil is stirred while pouring fresh concrete.

On the other hand, the above-mentioned vertical type stirrer 1
When using 0B, as shown in FIGS. 6 and 7, a vertical type agitator 10B is installed in place of the trencher type agitator 10A by inserting and removing the pin 62, and the joints 88 and 89 are connected to the vertical hydraulic motor 16B. The hydraulic motor 6 for lifting and lowering the support frame is connected to the joints 96 and 97 connected to the pipe lines 98 and 99 of
5 in the forward and reverse directions so that the stirring blade 81 moves up and down from the desired depth to the ground surface,
The hydraulic motor 16B for traverse is operated, and the stirrer 10B is traversed at a speed reduced by the speed reducer 111, for example, at a traverse speed of 0.5 m/min. Similarly to the above, when the agitator 10B reaches either the left or right end of the guide frame 12, the hydraulic cylinder 60 and the hydraulic motor 65 are operated in the upward direction of the agitator 10B to move the rotary blade 81 of the agitator 10B to the ground. The hydraulic motor 8 for lifting and traveling is operated to move the vehicle backward by the front and rear agitation width of the agitator 10B, and then the control valve 87 is switched to rotate the hydraulic motor 16B in the opposite direction, and the agitator 1
0B is moved in the opposite direction.

The above explanation is based on the traverse motors 16A, 16.
Although the actuators of B and the stirrers 10A and 10B are hydraulic motors and hydraulic cylinders, the present invention can also be applied to a case where some or all of these are replaced with electric motors. Also,
The mechanism for changing gears when replacing the trencher type with the vertical type must either transmit the output of the same motor to the power transmission section to the transverse frame via a reducer, or
Although it is possible to use a mechanism that changes speed depending on whether the transmission is transmitted without going through a speed reducer, the mechanism shown in the embodiment has the advantage that there is less waste of energy required for traversing when using a vertical type stirrer. There is. In addition, as in this embodiment, if the front and back position of the upper car body 2 with respect to the lower car body 1 can be adjusted using the hydraulic cylinder 56, etc., the compressor 41 can be installed or not installed, or the power generation Not only is it possible to eliminate the inclination of the machine due to the installation or non-installation of the machine 40 by the above-mentioned position adjustment, but also the trencher type agitator 10A
Even if the weight changes between when the vertical agitator 10B is installed and when the vertical agitator 10B is installed, the posture can be maintained horizontally by expanding and contracting the hydraulic cylinder 56. Furthermore, in the present invention, the interchangeable mounting structure of the agitators 10A and 10B is not limited to the embodiments,
Moreover, the structure of the stirrers 10A and 10B can also be changed in various ways.

(Effects of the invention) As described above, the present invention has a guide frame attached to the front part of a self-propelled lower car body having a float in a direction across the lower car body, and a guide frame that is movable horizontally along the guide frame. A frame is attached, a trencher or a vertical agitator is removably attached to the transverse frame, and a drive device for moving the transverse frame is provided with a speed change means that can be set to a speed suitable for moving the trencher or vertical agitator. Since it is equipped with a trencher and a vertical agitator, it is possible to replace the trencher and the vertical agitator with respect to the traversing frame, and each can be traversed at a suitable speed, making it possible to improve the ground in both surface and deep layers with one machine. Become. Therefore, as a machine user, you only need to have one machine for surface and deep ground improvement.
Economization is achieved.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the ground improvement machine according to the present invention with a trencher-type agitator installed, Fig. 2 is a plan view thereof, and Fig. 3 is a front view thereof.
FIG. 4 is a front view of the transverse frame of the embodiment, FIG. 5 is a partially enlarged side view of FIG. 1, FIG. 6 is a plan view of the embodiment with the vertical stirrer installed, and FIG.
This figure is also a side view, and FIG. 8 is a configuration diagram showing a switching connection circuit of the traverse motor.

Claims (1)

[Scope of claim for utility model registration] 1. At the front of a self-propelled lower vehicle body having a float,
Install a guide frame in a direction across the lower vehicle body,
A transverse frame is attached so as to be movable along the guide frame, a trencher or a vertical agitator is attached to the transverse frame in a replaceable manner, and a drive device for moving the transverse frame is configured to move the trencher or vertical agitator. A soft ground improving machine characterized by being equipped with a speed change means that can be set to a speed suitable for. 2. The drive device includes a first hydraulic motor for the trencher and a second hydraulic motor for a vertical agitator smaller than the hydraulic motor for the trencher, and the speed change means includes an output section of the first motor; The flexible motor according to claim 1, characterized in that it comprises a clutch that selectively connects an output section of the second motor via a speed reducer to a power transmission section that causes the traversing frame to traverse. Ground improvement machine.