JPH0868045A - Soil improvement machine - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work of mixing and stirring. [Structure] An upper vehicle body 22 is rotatably attached to a lower vehicle body 20, a mixing and stirring device 34 equipped with a mixing and stirring rotor 56 is vertically movably attached to the lower vehicle body 20, and the upper vehicle body 22 is turned during mixing and stirring work. The operator sitting in the driver's seat 24 should be able to easily see the mixing and stirring portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improvement machine which is mainly used for soil improvement of soft ground to hard ground.

[0002]

2. Description of the Related Art In order to improve the soil quality of soft ground to hard ground, a soil quality improving agent is sprayed on the soft ground, and the soil improving agent and the soil of the soft ground are mixed and stirred.
A soil conditioner is used to mix and agitate this soil conditioner with soil on soft ground.

As this soil improvement machine, there is known one in which a mixing and stirring device having a mixing and stirring rotor is attached to a rear portion of a vehicle body having a traveling body so as to be vertically movable via a vertically moving mechanism composed of a link and a cylinder. ing.

[0004]

Since such a soil improvement machine is self-propelled, the driver's seat is attached to the vehicle body so that the operator sits and operates the operator's seat. While sitting in the driver's seat, it is difficult to see the mixing and stirring device attached to the rear part of the vehicle body, and it is very difficult to perform the mixing and stirring work.

Therefore, an object of the present invention is to provide a soil improvement machine capable of solving the above-mentioned problems.

[0006]

A first soil improvement machine is a vehicle body in which an upper vehicle body 22 having a driver's seat 24 is rotatably attached to a lower vehicle body 20 having a traveling body 21 by a turning mechanism 23 to form a vehicle body. The lower vehicle body 20 is provided with a mixing and stirring device 34 equipped with a mixing and stirring rotor 56 so as to be vertically movable. In the second soil improvement machine, an upper vehicle body 22 having a driver's seat 24 is rotatably attached to a lower vehicle body 20 having a traveling body 21 by a turning mechanism 23 to form a vehicle body, and a mixing and stirring rotor 56 is attached to the upper vehicle body 22. The provided mixing and stirring device 34 is attached so as to be vertically movable.

[0007]

[Operation] If it is the first soil improvement machine, the upper car body 22
Can rotate with respect to the lower vehicle body 20, so that the operator sitting in the driver's seat 24 can swivel with respect to the mixing and stirring device 34, and can see the mixing and stirring work state at the most visible angle. And the working accuracy can be improved. Further, by turning the upper vehicle body 22 at a right angle with respect to the lower vehicle body 20, both the traveling direction of the vehicle body and the state of the mixing and stirring work can be sufficiently observed, so that safety can be secured. In addition, the lower vehicle body 20 has a mixing and stirring device 34.
By mounting the, it is possible to lower the center of gravity of the vehicle and to make a compact structure,
Since the vehicle weight can be reduced and the mixing / stirring device 34 can be arranged near the center of gravity, the vehicle body is unlikely to lift during the mixing / stirring operation, so that stable work can be performed. According to the second soil improvement machine, the driver's seat 24 is arranged in the vicinity of the mounting portion of the mixing and stirring device 34, whereby the visibility during the mixing and stirring work can be significantly improved, and the upper vehicle body 22 is swung. Mixing stirrer 3
4 can be easily adjusted.

[0008]

[Example] As shown in FIG. 1 and FIG.
Running bodies 21 are attached to the left and right of the lower body 2
An upper slewing body 22 is attached to the upper part of 0 by a slewing mechanism 23 so as to be rotatable in a horizontal plane direction to form a vehicle body. The upper slewing body is provided with a driver seat 24 and a counterweight 25. .

The lower vehicle body 20 has a pair of left and right track frames 31, 31 attached to a lower frame 30, a drive wheel 32 and a driven wheel 33 are attached to the track frame 31, and the drive wheel 32 and the driven wheel are attached. Crawler 3 to 33
4 is wound to form a crawler type traveling body 21.

A mixing and stirring device 34 is mounted between the left and right traveling bodies 21 of the lower vehicle body 20 (that is, the lower frame 30) so as to be vertically and horizontally movable. That is, a pair of upper and lower lateral guide rods 37, 36 is provided between the left and right protruding pieces 36, 36 fixed to the vertical plate 35 fixed to the lower frame 30.
37 are laid horizontally parallel to each other in the left-right direction, and a mounting bracket 38 is provided slidably in the left-right direction along the lateral guide rods 37, 37, and a sliding cylinder extends between the mounting bracket 38 and the vertical plate 35. Left and right moving mechanism 4 by connecting 39
Configures 0.

The mounting bracket 38 is attached to the mounting bracket 38.
1 is connected by a pin 42 so as to be vertically swingable, a boom cylinder 43 is connected across the mounting boom 41 and a mounting bracket 38, and the tip of the mounting boom 41 is fixed to an upper horizontal plate 44a of a housing 44. The bracket 45 is connected by the pin 46, and the pin 45 is connected to the bracket 45.
The connecting rod 48 connected to the mounting cylinder 41 and the rotor cylinder 49 pivotally attached to the mounting arm 41 are connected by a pin 50.
The link 51 connected to the mounting arm 41 is connected to the mounting arm 41 by a pin to form an up-and-down moving mechanism 52 that moves in an arc shape in the up-and-down direction, whereby the mixing and stirring device 34 can be flipped up and stored.

The housing 44, as shown in FIG.
The upper horizontal plate 44a and the vertical plates 44b on both sides form a gate-shaped frame having an opening on the lower side.
3 is rotatably supported horizontally, and a plurality of substantially star-shaped bit plates 54 are fixed to the rotating horizontal shaft 53 at intervals in the axial direction, and the protrusions of each bit plate 54 are agitated. A plurality of mixing bits 55 are fixedly attached at intervals in the circumferential direction to form the mixing and stirring rotor 56.

A transmission case 57 is attached to the one vertical plate 44b.
And a drive motor 58 is attached to the upper end of the transmission case 57. The output shaft 58 of the drive motor 58 is
A chain 61 is wound around a drive sprocket 59 provided on a and a driven sprocket 60 provided on the rotating horizontal shaft 53, and when the drive motor 57 is driven, the rotating horizontal shaft 53 is rotated so that the mixing and stirring device 34 is provided. is there.

Next, the operation of mixing and stirring the soil-improving material and the soil which have been previously sprayed will be described. Cylinder for rotor 4
9 is extended to swing the mixing and stirring rotor 56 downward, the boom cylinder 43 is contracted to swing the mounting boom 41 downward, and the slide cylinder 39 is extended and contracted to move the mounting bracket 38 left and right. Mixing and stirring rotor 5
6 is moved in the width direction of the vehicle body and positioned, for example, positioned in the center portion in the width direction, and the driving motor 58 is driven to rotate the mixing and stirring rotor 56, and the mounting arm 41 is moved further downward to be sprayed beforehand. The soil improvement material and the excavated earth and sand are mixed and stirred to obtain a homogeneous soil.
To drive the car body. After this, the homogeneous soil hardens with the passage of time to become hard ground.

At this time, the upper vehicle body 22 is turned by approximately 90 degrees from the state shown in FIGS. 1 and 2 to bring the driver's seat 24 to a position rotated by approximately 90 degrees with respect to the vehicle running direction. As a result, the operator can easily see the traveling direction and the rear of the vehicle body, and can easily see the portion where the mixing and stirring rotor 56 is operating.

When the vehicle body is self-propelled, as shown in FIG. 4, the boom cylinder 43 is extended to swing the boom 4 upward, the rotor cylinder 49 is contracted, and the mixing and stirring rotor 56 is flipped upward. Are separated from the ground surface so that the mixing and stirring rotor 56 does not interfere with the ground surface during self-propelling.

Next, a second embodiment of the present invention will be described with reference to FIGS. 5, 6 and 7. Lower frame 3 of the lower body 20
0, the supporting frame 80 is fixed substantially horizontally, the mounting bracket 81 is connected to the supporting frame 80 by pins 82 so as to be vertically swingable, and the connecting rod 8 is connected to the mounting bracket 81.
3 is connected by a pin 84, a rotor cylinder 85 connected to the lower vehicle body 20 is connected to the connecting rod 83 by a pin 86,
The link 87 connected to the pin 86 is connected to the support frame 80.
Is a vertical movement mechanism 88 that is connected to the vertical movement mechanism and moves up and down in an arc shape.

A guide frame 89 is attached to the mounting bracket 81, and the guide hole 9 of the guide frame 89 is attached.
The slide rod 91 is slidably inserted into the left and right sides of the guide rod 91, the vertical plates 92 fixed to both ends of the guide rod 91 are fixed to the housing 44, and the vertical plate 92 and the guide frame 8 are attached.
A sliding cylinder 93 is connected over 9 to form a lateral movement mechanism 94.

With this arrangement, the rotor cylinder 85
By extending the link 87 and the connecting rod 83, the mixing and stirring rotor 56 swings downward as shown in FIG. 5, and by contracting the rotor cylinder 85, the mixing and stirring rotor 56 moves upward as shown in FIG. The mixing excavation rotor 56 can be greatly swung up and down by the expansion and contraction strokes of the rotor cylinder 85 to be flipped up and stored, and the rotor cylinder 85 can adjust the depth of mixing and stirring. be able to. Further, the mixing and stirring rotor 56 can be moved in the vehicle width direction by extending and contracting the sliding cylinder 93.

Next, a third embodiment of the present invention will be described with reference to FIGS. 8 and 9. A mixing and stirring device 34 is attached to a rear portion of an upper revolving structure 22 provided on the lower vehicle body 20 so as to be freely rotatable, and a counterweight 25 is attached to a front portion thereof. A pair of upper and lower lateral guide rods 97, 97 are horizontally extended between the left and right projecting pieces 96, 96 fixed to a vertical plate 95 fixed to a rear portion of the upper swing body 22 near the driver's seat 24 in parallel with each other in the left-right direction. Then, a mounting bracket 98 is provided so as to be slidable left and right along the vertical and horizontal guide rods 97, 97, and a sliding cylinder 99 is provided between the mounting bracket 98 and the vertical plate 95.
Are connected to form a left and right moving mechanism 100.

A boom 101 is attached to the mounting bracket 98.
Is connected by a pin 102 so that it can swing up and down.
01 and the mounting bracket 99, the boom cylinder 10
3 is connected, and the arm 10 is attached to the tip of the boom 101.
4 is connected by a pin 105 so as to be vertically swingable, and its arm 104 is connected by a pin 107 to a bracket 106 fixed to the upper horizontal plate 44a of the housing 44, and the bracket fixed to the upper horizontal plate 44a of the housing 44. A connecting rod 110 connected to 108 by a pin 109 and a rotor cylinder 111 pivotally attached to the arm 104 are connected by a pin 112, and a link 113 connected to this pin 112 is connected to a second mounting arm 104 by a pin 114. An arm cylinder 115 is connected between the boom 101 and the arm 104 to form a vertically moving mechanism 116 that vertically moves in an arc shape.

The housing 44 is a gate-shaped frame whose front and rear are opened by an upper horizontal plate 44a, both side vertical plates 44b and a lower horizontal plate 44c.

In this way, the excavation mixing and stirring rotor 56 can be largely swung up and down by swinging the boom and arm cylinders 103 and 115 up and down. The storage posture shown can be taken. Also, the boom and arm cylinder 10
By moving 3, 115, the vehicle weight stability at the time of mixing and stirring by the mixing and stirring rotor 56 is improved by the counterweight 25.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
It will be described based on. A mounting bracket 98 is mounted on the rear portion of the upper vehicle body 22 near the driver's seat 24 so as to be swingable right and left with a vertical axis 120, and the swinging bracket 121 fixed to the mounting bracket 98 and the swinging cylinder 12 across the upper vehicle body 22.
The mixing and stirring rotor 56 of the mixing and stirring device 34 is movably mounted on the mounting bracket 98 via the same vertical movement mechanism 116 as described above.

In this way, the swing cylinder 122
Since the mixing and stirring rotor 56 swings in the vehicle width direction together with the mounting bracket 98 by expanding and contracting, the position of the mixing and stirring rotor 56 in the vehicle width direction can be adjusted.

Next, the mixing and stirring rotor 56 will be described. As shown in FIG. 12, the bit plate 54 has a star shape having a plurality of protrusions 54a in a radial shape, and a bit 55 is attached to each protrusion 54a, and the bit plate 54 has protrusions 54a at a predetermined angle α. It is fixed to the rotating horizontal shaft 53 so as to be displaced.

By doing so, as shown in FIG. 13, the arrangement of the bits 55 becomes axially symmetrical with the bit-arranged virtual cylinder expanded, whereby the thrust force acts on the mixing and stirring rotor 56. Can be prevented.

That is, since the straight line connecting each bit 55 has a V-shape that is open with respect to the rotation direction, a force acting toward the center in the axial direction acts due to the resistance acting on each bit 55, so that they face each other in the axial direction. The thrust of the bit 55 is canceled and the thrust force does not act. The arrangement of the bit 55 is shown in FIG.
The direction of rotation may be opposite to that shown in FIG.

As shown in FIG. 14, a rotating horizontal shaft 53 is provided with a bit plate 54 having protrusions 54a having different protrusion lengths.
The bit 55 attached to the protruding portion 54a having a long protruding length is used as an excavating bit, and the protruding portion 54a having a short protruding length is used.
The bit 55 attached to is used as a stirring bit.

In this way, since the function of the bit 55 is divided into excavation and mixing / agitation, the excavation and mixing / agitation performance is improved. Note that each bit 55 is also used in this embodiment.
The array of V is V-shaped in the direction of rotation as shown in FIG.

As shown in FIGS. 16 and 17, the front and back surfaces 54 are provided for each of the protrusions 54a constituting the bit plate 54.
The bit interval d ₁ may be reduced by attaching the bit 55 to b and 54c via the boulder 55a, or the holder 55a may be increased in thickness to reduce the bit interval d ₁ .

Also in this case, the arrangement of each bit 55 is as shown in FIG.
As shown in FIG. 8, it is V-shaped in the direction of rotation.

[0033]

According to the soil improvement machine of the first aspect, the upper vehicle body 22 can turn with respect to the lower vehicle body 20, so that the operator sitting in the driver's seat 24 can mix and stir the mixing apparatus 34.
Since it is possible to swivel with respect to each other and the mixing and stirring work state can be viewed at the most visible angle, work efficiency and work accuracy can be improved. Further, the upper body 2 is lower than the lower body 20.
By turning 2 at a right angle, both the traveling direction of the vehicle body and the state of the mixing and stirring work can be sufficiently observed, so that safety can be secured. Further, by mounting the mixing and stirring device 34 on the lower vehicle body 20, the position of the center of gravity of the vehicle can be lowered and the structure can be made compact, so that the vehicle weight can be reduced and the position of the center of gravity can be reduced. Since the mixing / stirring device 34 can be arranged in a close place, the vehicle body is unlikely to lift during the mixing / stirring operation, so that stable work can be performed.

According to the soil improvement machine of claim 2, the driver's seat 2
By arranging 4 near the mounting portion of the mixing and stirring device 34, the visibility at the time of mixing and stirring operation can be greatly improved, and the position of the mixing and stirring device 34 can be easily adjusted by turning the upper vehicle body 22. It can be carried out.

According to the soil improvement machine of claims 3 and 4, the mixing and stirring device 34 can be adjusted up and down, and when it is self-propelled, the mixing and stirring device 34 can be flipped up and stored.
The mixing / stirring device does not get in the way when traveling on rough terrain, and the workability on narrow areas is improved.

According to the soil improvement machine of the fifth aspect, the mixing and stirring device 34 can be compactly stored together in the upper part during self-propelling, and in combination with the fact that there is no running body 21 in the lower vehicle body 20, it is narrow. Ground workability is further improved. Moreover, since the mixing / stirring device 34 can be moved with respect to the upper vehicle body 22 even when the vehicle body is stopped, it is possible to stably and efficiently perform the mixing / stirring in the heterogeneous soil.

According to the soil improvement machine of the sixth and seventh aspects, since the mixing and stirring device 34 can be moved in the vehicle width direction with respect to the lower vehicle body 20, the position adjustment in the vehicle width direction can be performed.

According to the soil improvement machine of the eighth aspect, since the mixing and stirring device 34 can be moved in the vehicle width direction with respect to the upper vehicle body 22, the position adjustment in the vehicle width direction can be performed.

According to the soil improvement machine of the ninth aspect, the width of the mixing and stirring rotor 56 can be adjusted and the horizontal angle can be adjusted by turning the upper vehicle body 22 and swinging the mounting bracket 98.

[Brief description of drawings]

FIG. 1 is an overall front view showing a first embodiment of the present invention.

FIG. 2 is an overall plan view showing a first embodiment of the present invention.

FIG. 3 is a cross-sectional view of a mixing and stirring device.

FIG. 4 is a front view of a state in which the mixing and stirring device is stored.

FIG. 5 is an overall front view showing an embodiment of the present invention.

FIG. 6 is a plan view of a slide mechanism portion.

FIG. 7 is a front view of a state in which the mixing stirrer is stored.

FIG. 8 is an overall front view showing a third embodiment of the present invention.

FIG. 9 is an overall plan view showing a third embodiment of the present invention.

FIG. 10 is an overall front view showing a fourth embodiment of the present invention.

FIG. 11 is an overall plan view showing a fourth embodiment of the present invention.

FIG. 12 is a side view showing a first embodiment of the mixing and stirring device.

FIG. 13 is a development view showing the arrangement of bits.

FIG. 14 is a side view showing a second embodiment of the mixing and stirring device.

FIG. 15 is a development view showing the arrangement of bits.

FIG. 16 is a vertical cross-sectional view showing a third embodiment of the mixing and stirring device.

FIG. 17 is a side view showing a third embodiment of the mixing and stirring device.

FIG. 18 is a development view showing the arrangement of bits.

[Explanation of symbols]

 20 ... Lower car body 21 ... Traveling body 22 ... Upper car body 23 ... Turning mechanism 24 ... Driver seat 34 ... Mixing and stirring device 44 ... Housing 56 ... Mixing and stirring rotor 53 ... Rotating horizontal shaft 54 ... Bit plate 55 ... Bit.

Claims (9)

[Claims] 1. A lower vehicle body 20 provided with a traveling body 21 and an upper vehicle body 22 provided with a driver's seat 24 rotatably attached by a turning mechanism 23 to form a vehicle body. The lower vehicle body 20 is provided with a mixing and stirring rotor 56. A soil improvement machine characterized in that a stirring device 34 is attached so as to be vertically movable. 2. A lower vehicle body 20 provided with a traveling body 21 and an upper vehicle body 22 provided with a driver's seat 24 rotatably attached by a turning mechanism 23 to form a vehicle body. The upper vehicle body 22 is provided with a mixing and stirring rotor 56. A soil improvement machine characterized in that a stirring device 34 is attached so as to be vertically movable. 3. A boom 41 is vertically swingably mounted on a lower vehicle body 20 by a boom cylinder 43, and a housing 44 is vertically rotatably mounted on the boom 41 by a rotor cylinder 49 and a link. The soil improvement machine according to claim 1, further comprising a mixing and stirring rotor 56. 4. The support frame 80 is fixed to the lower vehicle body 20 substantially horizontally, and the housing 44 is fixed to the support frame 80.
2. The soil improvement machine according to claim 1, wherein the rotor cylinder 85 is rotatably attached by a link, and the housing 44 is provided with a mixing and stirring rotor 56. 5. A boom 101 is attached to an upper vehicle body 22 by a boom cylinder 103 so as to be vertically rotatable.
1, the arm 104 is attached to the arm cylinder 115 so as to be vertically rotatable, and the housing 44 is attached to the arm 104 so as to be vertically rotatable by a link with the rotor cylinder 111.
The soil improvement machine according to claim 2, wherein a mixing and stirring rotor 56 is attached to the housing 44. 6. A mounting bracket 38 is movably mounted on the lower vehicle body 20 in the width direction of the vehicle body.
The soil improvement machine according to claim 3, wherein a boom 41 is attached to the soil. 7. A mounting bracket 81 is attached to the support arm 50 by a link with a rotor cylinder 85 so as to be vertically swingable, and a guide frame 89 is attached to the mounting bracket 81 so as to be movable in the vehicle width direction. The soil improvement machine according to claim 4, wherein the housing 44 is attached to the frame 89. 8. A mounting bracket 98 is mounted on the upper vehicle body 22 so as to be movable in the vehicle width direction, and the mounting bracket 98 is attached.
The soil improvement machine according to claim 5, wherein a boom 101 is attached to the soil. 9. A mounting bracket 98 is mounted on the upper vehicle body 22 so as to be swingable in the vehicle width direction, and the mounting bracket 98 is attached.
The soil improvement machine according to claim 5, wherein a boom 101 is attached to the soil.