JP2003105798A - Self-running soil improvement machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-running soil improving machine capable of improving maintenability by facilitating the removal work for a mixer. SOLUTION: This self-running soil improvement machine includes a traveling apparatus 2, a pair of body frames 3 provided on the upper part of a truck frame 4 of the traveling apparatus 2, a hopper 12 for receiving thrown sediment to be modified, a carrying conveyer 13 for carrying the sediment to be modified received by the hopper 12, a soil modifier material supply device 19 for adding soil modifier material to the sediment to be modified, a mixer 38 for mixing the sediment to be modified received from the carrying conveyer 13 with the soil modifier material to generate improved soil, and a discharge conveyer 60 provided slidably in the longitudinal direction of the body frame 3 to discharge the generated improved soil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled soil conditioner that receives soil, mixes it with a soil conditioner and reforms it.

[0002]

2. Description of the Related Art In recent years, under the background of promoting waste reuse such as the establishment of a so-called construction recycling promotion plan by the Ministry of Construction (1997), for example, burial work for gas pipes, water and sewer work, and other road works. -At various sites where foundation work etc. are performed, the soil and sand are mixed with the soil improvement material by stirring and mixing, and improved soil products for recycling and improved soil for laying ground on the surface layer of residential land, road subgrades, etc. Needs for self-propelled soil improvement machines to generate are expanding. As such a self-propelled soil improvement machine, for example, Japanese Patent Laid-Open No. 2000-2000
As described in JP-A-45327, a hopper that receives earth and sand (earth and sand hopper), a conveyer that conveys earth and sand in the hopper (intake conveyor), and a soil property that adds a soil improvement agent to earth and sand on the conveyer conveyor. An improvement material supply device (soil quality improvement material hopper), a mixing device (treatment tank) that mixes the soil and sand and the soil quality improvement material introduced from the conveyor to generate improved soil, and the improved soil derived from this mixing device. It has already been proposed that a discharging conveyor (carrying-out conveyor) for discharging to the outside is roughly supported by a body frame.

In this prior art, the mixing device is
Supported near the longitudinal center of the main body frame, above it is the conveyer conveyor that introduces the earth and sand received by the hopper into the mixer, and below that is the discharge conveyor that discharges the improved soil generated by the mixer out of the machine. positioned. Also,
The soil improving material supply device and the hopper are located above the conveyor, and above the hopper, there is provided a sieving means for selecting the earth and sand put into the hopper according to the particle size.

[0004]

When foreign matter is mixed in the mixing device, when some parts of the mixing device need to be replaced, or when other periodic inspections are to be carried out, the worker must It is necessary to perform maintenance and inspection work on the mixing device. However, as described above, in the conventional self-propelled soil improvement machine, various devices are compactly laid out on the main body frame in consideration of mobility, etc. It is very difficult to directly perform maintenance / inspection work on the device, and in reality, it was necessary to perform maintenance / inspection work after the mixing device was once removed from the main body frame.

For removing the mixing device, usually, there is a method of lifting the mixing device from above by using a crane or the like, or hanging the mixing device with a chain block or the like to hang it between the traveling devices. However, when removing the mixing device by lifting it from above using a crane, etc.
It is necessary to remove all equipment located above the mixing device, such as the soil improvement material supply device, the conveyor, and the hopper located above the conveyor, but this removal work requires a lot of time and labor. It is work. Also, when suspending the mixing device with a chain block or the like and hanging it down between the traveling devices, it is necessary to prepare a long discharge conveyor located below the mixing device and appropriately remove the suspension device while balancing it. However, this work also requires a lot of time and labor.

As described above, conventionally, in order to perform maintenance / inspection work of the mixing apparatus, it is necessary to remove other equipment which requires a great deal of time and labor accompanying the removal operation of the mixing apparatus.

The present invention has been made on the basis of the above matters, and an object thereof is to provide a self-propelled soil improvement machine capable of improving maintainability by facilitating the work of removing the mixing device. It is in.

[0008]

(1) In order to achieve the above object, the present invention provides a traveling device, a main body frame provided on an upper portion of a track frame of the traveling device, and a target sand to be modified. A hopper to receive, a conveyer that conveys the soil to be modified received by this hopper, a soil improver supply device that adds a soil improver to the soil to be reformed, and the soil to be reformed received from the conveyer and A mixing device that mixes the soil improvement material to generate the improved soil, and a discharge conveyor that is slidable in the longitudinal direction of the body frame and discharges the improved soil generated by the mixing device are provided.

According to the present invention, by sliding the discharge conveyor in the longitudinal direction of the main body frame, it is possible to create a space below the mixing device for removing the mixing device without removing the discharge conveyor. it can. As a result, the work of removing the mixing device becomes easy, and the maintainability can be improved accordingly.

(2) In the above (1), preferably,
A guide member is provided on the track frame and slidably supports the discharge conveyor.

(3) In the above (2), and preferably, the discharge conveyor has a slide member that slides on the guide member.

(4) In the above (2), and preferably, the discharge conveyor has a roller that rolls on the guide member.

(5) Any one of the above (1) to (4)
Preferably, the width dimension of the mixing device is set smaller than the widthwise dimension of the main body frame, and a connecting member for connecting the main body frame and the mixing device is provided on the main body frame.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a self-propelled soil improvement machine of the present invention will be described below with reference to the drawings. Self-propelled soil improvement machine, for example, construction generated soil improvement such as construction generated soil generated at a construction site, etc. is mixed with a soil improvement material on site to produce an improved soil product for recycling,
Alternatively, the soil that has been excavated from the surface of a site for construction of residential land, etc. can be modified on the spot to generate improved soil that can be backfilled to the surface for strengthening the ground, or excavation of a specified location within the site at a site for road construction, etc. It is widely used for surface soil stabilization treatment, such as modifying the soil obtained in this way on-site to generate improved soil to be laid as a roadbed material.

FIG. 1 is a side view showing the overall structure of an embodiment of a self-propelled soil improvement machine of the present invention, and FIG. 2 is a top view thereof. In FIGS. 1 and 2, reference numeral 1 denotes a traveling body, which is composed of a pair of left and right traveling devices 2 and a substantially frame-shaped main body frame 3 provided on the traveling device 2. Has been done. Further, 4 is a track frame of the traveling device 2,
The track frame 4 is connected to the lower portion of the main body frame 3. 5 and 6 are this track frame 4 respectively
Driven wheels and idler wheels provided at both ends of the drive wheel 7, a crawler belt (infinite track) wound around the driven wheel 5 and the drive wheel 6, and a drive device 8 directly connected to the drive wheel 6. 9
Reference numerals a and 9b denote support posts vertically provided on the main body frame 3, and these support posts 9a and 9b are the support posts 1 and 9b.
It supports 0 and 11.

Reference numeral 12 is a hopper that receives the soil to be reformed, and the hopper 12 is formed so as to surround the side surfaces except the rear side (right side in FIG. 1) of the self-propelled soil conditioner, and the supporting frame described above. It is supported on one side in the longitudinal direction of the main body frame 3 (on the left side in FIG. 1) by 10. In addition, the earth and sand to be modified is often thrown in by a heavy machine such as a hydraulic excavator, and the hopper 12 is formed in an upwardly expanded manner in consideration of the convenience of the earth and sand throw by the heavy machine.

Reference numeral 13 denotes a conveyer conveys the earth and sand received by the hopper 12. The conveyer 13 is provided below the hopper 12 and has an inlet cylinder 39 of a mixing device 38 which will be described later.
It extends upwards and slopes upward. Reference numeral 14 is a conveyor frame of the transfer conveyor 13, and the conveyor frame 14 is supported by the support posts 9a and 9b. 15 and 16 are the conveyor frames 1 respectively
Drive wheels and driven wheels provided at both ends of 4, a conveyor belt 17 wound around the drive wheels 15 and the driven wheels 16, and a plurality of support rollers 18 for supporting the conveyor surface of the conveyor belt 17. A drive device (not shown) is connected to the drive wheel 15 to drive the drive wheel 15 to circulate the conveyor belt 17.

Reference numeral 19 denotes a soil-improving-material supply device for adding the soil-improving-material to the earth and sand on the conveyer conveyor 13. The soil-improving-material supplying device 19 includes a soil-modifying-material storage tank 20 having a substantially rectangular horizontal section, The storage tank 20 is provided with a screw feeder 21 for guiding the soil improvement material downward, and a chute 22 having a substantially quadrangular pyramid shape which functions as a funnel for guiding the soil improvement material in the storage tank 20 to the screw feeder 21. There is. In addition, the storage tank 20 has a bellows portion 24 continuously provided on a flange-shaped frame plate 23 above the chute 22.
And a top plate portion 25 that covers the upper portion of the bellows portion 24. Reference numeral 26 denotes an inlet (see FIG. 2) for filling the soil improving material provided at substantially the center of the top plate portion 25, and 27 denotes an opening / closing lid of the soil improving material inlet 26.
Is attached to the top plate portion 25 by a hinge 28 (see FIG. 2).

Reference numeral 29 is a mounting portion provided on the outer peripheral portion of the top plate portion 25 (three in this example), and 30 is a pillar fixedly hung on these mounting portions 29. A pin hole 31 (only the upper one is shown in FIG. 1) is formed at a predetermined position. 32 is a substantially frame type base plate supported by the support frame 11, 33 is a plurality of guide cylinders standing on the base plate 32, and the guide cylinders 33 support the frame plate 23 of the chute 22 described above. is doing. In addition, a pin hole (not shown) is formed near the tip of the guide cylinder 33. Each of the columns 30 is a guide tube 3
3 is slidably inserted in the up-down direction so that it can project below the base plate 32, and the bellows portion 24 expands and contracts as the support column 30 slides, so that the height of the storage tank 20 increases. It has a variable structure. Reference numeral 34 is a stopper pin for fixing the support column 30 to the guide cylinder 33, and the stopper pin 34 is inserted into the pin hole 31 of the support column 30 via a pin hole (not shown) of the guide cylinder 33. With such a structure, for example, at the time of operation, the bellows portion 24 is extended, and the stopper pin 34 is inserted into the pin hole 31 below the support column 30 through the pin hole of the guide cylinder 33, so that FIG. As shown in the state shown, when the internal volume of the storage tank 20 is sufficiently secured and the self-propelled soil improvement machine is transported by a trailer or the like, the bellows portion 24 is contracted and the guide cylinder 33 is used.
By inserting the stopper pin 34 into the pin hole 31 on the upper side of the support column 30 through the pin hole, the total height of the self-propelled soil improvement machine can be maintained in a state where it is lowered to a height that clears the transportation restriction. .

Here, the screw feeder 21 is
It is provided with a substantially cylindrical casing 35 and a screw 36 provided in the casing 35. The screw 36 is rotationally driven by a drive device (not shown), and the soil improvement introduced from the chute 22 into the casing 35 is performed. The material is transferred to the left side in FIG. Then, from the outlet of the soil conditioner (not shown), the vicinity of the downstream end (right side in FIG. 1) of the conveyor 13 in the conveying direction is added to the conveyed soil quantitatively. As shown in FIG. 1, the screw feeder 21 is arranged so that the upstream side (the right side in FIG. 1) in the transfer direction is lower than the downstream side (the left side in FIG. 1) in the transfer direction so as to enter the lower space. It is provided, and the height of the soil improvement material supply device 19 is reduced by that amount.

Reference numeral 37 is a crane (see FIG. 2) provided on one side (upper side in FIG. 2) of the self-propelled soil improvement machine.
The reference numeral 7 designates a support portion 37 projecting upward from the body frame 3.
A and an arm 37B whose base end is pivotally connected to the support portion 37A, expands and contracts in the longitudinal direction, and swings substantially horizontally.
And a cylinder 37C that raises and lowers this arm 37B.
And a winch 37D provided at the tip of the arm 37B. Normally, when filling the soil improvement material into the storage tank 20, the upper opening / closing lid 27 is opened and the crane 37
Thus, the flexible container is lifted and inserted into the soil improvement material receiving port 26. At this time, although not particularly shown in order to prevent complication, a grid member is vertically provided on the top plate portion 25 so as to be positioned substantially directly below the soil improvement material receiving port 26 in the storage tank 20. And
A cutter whose tip is directed upward is provided on the lattice member. As a result, the flexible container inserted into the soil quality improving material inlet port 26 by the crane 37 is pressed against the cutter by its own weight and the bottom portion is torn, and the soil quality improving material flows out into the storage tank 20 from here. .

Reference numeral 38 denotes a mixing device for mixing the soil and sand introduced from the conveyer 13 and the soil improvement material to produce improved soil. 3 is a horizontal sectional view showing a detailed structure of the mixing device 38, and FIG. 4 is a side sectional view taken along the line IV-IV in FIG. In these FIGS. 3 and 4, 38A is a main body of the mixing device 38, and the mixing device main body 38A has an inlet cylinder 39 of earth and sand and a soil improving material at the upper part on one side in the longitudinal direction (left side in FIG. 4). An outlet cylinder 40 for improved soil is provided on the lower part of the other side (right side in FIG. 4). The upper surface of the mixing device main body 38A excluding the inlet cylinder 39 is provided with a plurality of (three in this example) lids 38Aa that can be attached and detached by, for example, bolts.
By removing the lid 38Aa and the inlet cylinder 39, the upper surface of the mixer main body 38A can be entirely opened. The lid 38
Aa may have a single-sheet structure.

Reference numeral 41 denotes a plurality (two in this example) of paddle mixers provided in the mixer main body 38A. The paddle mixers 41 are arranged substantially parallel to the longitudinal direction (horizontal direction in FIG. 3) of the mixer main body 38A. Rotating shaft 42 and this rotating shaft 4
2 and a plurality of paddles 43 provided radially. The paddle 43 has a smooth surface inclined by a predetermined angle with respect to the axial direction of the rotary shaft 42 (in this case, the right direction in FIG. 3) so as to face the rotational direction of the paddle mixer 41.
Reference numeral 44 denotes a bearing that rotatably supports both ends of the rotary shaft 42 of the paddle mixer 41, 45 denotes a gear provided at the other end (right end in FIG. 4) of the rotary shaft 42, and 46 denotes a drive device of the paddle mixer 41. The output shaft 46 a of the rotary shaft 42 is
Is directly connected to the other end (right end in FIG. 4) of the. Also, the gear 45
Of the adjacent rotary shafts 42 are meshed with each other, and the adjacent paddle mixers 41 are rotationally driven in opposite directions at substantially the same rotation speed. With such a structure, the mixing device 38 moves from the conveyor 13 to the inlet cylinder 3.
The earth and sand and the soil conditioner introduced through 9 are mixed with the paddle 43 to form improved soil, which is then transferred to the opposite side and discharged downward from the outlet cylinder 40. Reference numeral 47 designates a gear box including these gears 45 and the like, 41A scrapes off the generated improved soil toward the outlet cylinder 40, and prevents the improved soil from being compacted on the inner wall of the mixing device body 38A on the outlet cylinder 40 side. It is a scraping blade.

Here, the mounting structure of the mixing device 38 to the main body frame 3 will be described. FIG. 5 is a top view showing the mounting structure of the mixing device 38, and the paddle mixer 41 is omitted in the figure for the purpose of preventing complication. In FIG. 5, 48
Is a mounting portion projecting from the side surface in the width direction (vertical direction in FIG. 5) of both ends in the longitudinal direction (horizontal direction in FIG. 5) of the mixing device main body 38A.
The connecting member 50 is detachably fastened by means of the bolt 51 and is detachably fastened by means of the bolt 51. The width dimension of the mixing device main body 38A is smaller than the dimension between the main body frames 3 and 3, including the mounting portion 48.
A is provided so as to be bridged between the main body frames 3 and 3 via the connecting member 50 as described above. Thereby, if the fastening between the mounting portion 48 and the connecting member 50 is released, and the mixing device 38 is moved in the longitudinal direction (for example, the left direction in FIG. 5) so as to remove the position of the mounting portion 48 from the connecting member 50, The mixing device 38 can be passed between the main body frames 3 and 3 and can be hung downward. Since the connecting member 50 itself is also bolted to the body frame 3, it is not necessary to move the mixing device 38 in the longitudinal direction by removing the connecting member 50.

Returning to FIGS. 1 and 2, reference numeral 60 denotes the mixing device 38.
A discharge conveyor that discharges the improved soil and the like derived from the machine out of the machine. This discharge conveyor 60 is in the transport direction (right side in FIG. 1)
Toward the end of the mixing device 38, it extends substantially horizontally from below the mixing device 38 for a predetermined distance, and then extends upward from near below the driving device 46 of the above-mentioned mixing device 38. Reference numeral 61 is a conveyor frame of the discharge conveyor 60, 62 and 63 are drive wheels and driven wheels provided at both ends of the conveyor frame 61 (the driven wheel 63 is shown in FIG. 8 described later), and 64 is these drive wheels 62 and driven wheels. A conveyor belt wound around 63, and 65 are a plurality of support rollers that support the conveyor surface of the conveyor belt 64. 66 is a drive device directly connected to the drive wheels 62 (see FIG. 2).
In this case, the drive device 66 rotates the drive wheel 62 to circulate the conveyor belt 64. Reference numeral 67 is a side cover provided on both sides of the conveyor frame 61 in the width direction to prevent the improved soil being transported from being scattered by wind or the like.

Here, the mounting structure of the discharge conveyor 60 will be described. 6 is a front view showing the mounting structure of the discharge conveyor 60 as viewed from the left side in FIG. 1, and FIGS. 7 and 8 are partially enlarged views as viewed in the directions of arrows VII and VIII in FIG. 6, respectively. 6 to 8, reference numeral 68 denotes a guide member that supports the discharge conveyor 60.
Is a mounting member 69 fixed to the inside of the track frame 4 of the traveling device 2, a mounting plate 70 bolted to the inside of the mounting member 69, and fixed to the mounting plate 70 and extending substantially parallel to the main body frame 3. The rail 71 has a substantially C-shaped cross section. Reference numeral 72 is a slide member fixed to a side portion of a portion of the conveyor frame 61 that extends substantially horizontally. The slide member 72 is a guide member 68.
Is slidably supported by the rails 71, so that the discharge conveyor 60 is supported by the track frame 4, and the discharge conveyor 60 is guided by the rails 71 and slidable in the longitudinal direction. Since the rail 71 and the slide member 72 slide on each other, it is more preferable that the rail 71 and the slide member 72 are made of a material having abrasion resistance and lubricity.

Reference numeral 73 denotes a stopper pin, which is positioned at the respective pin insertion holes (not shown) formed at one end (left end in FIG. 8) in the longitudinal direction of the rail 71 and the slide member 72, and these pins are aligned with each other. By inserting the stopper pin 73 into the insertion hole, the discharge conveyor 60 is fixed and positioned. In addition, 69 'is the rail 7
It is an auxiliary mounting member for additionally connecting an auxiliary rail 71 ′ (see FIG. 9 described later) to the other side (right side in FIG. 8) in the longitudinal direction of 1.

Returning to FIG. 1 and FIG. 2 again, 74 is a support member provided near the center of the conveyor frame 61 in the longitudinal direction (left-right direction in FIG. 1). This support member 74 is a power unit 75.
It is removably fixed to (described later). Further, 76 is a bracket provided on the other longitudinal side (right side in FIG. 1) of the conveyor frame 61, and 77 is a rear side of the power unit 75 (see FIG. 1).
A support arm projecting from the side surface (middle right side), and 78 is a turnbuckle connecting the bracket 76 and the support arm 77. That is, in the discharge conveyor 60, a substantially horizontally extending portion on one side in the longitudinal direction (left side in FIG. 1) is provided on the track frame 4 near the center in the longitudinal direction and on the other side in the longitudinal direction (right side in FIG. 1). The inclined portion of) is supported by the power unit 75.

The power unit 75 mentioned above is equipped with an engine (not shown) as a power source of a hydraulic drive unit for driving and controlling the drive unit of each of the above-mentioned devices, and is driven by this engine. At least one hydraulic pump (not shown), and a plurality of control valves (not shown) for controlling the flow rate and direction of the pressure oil supplied from the hydraulic pump to each drive device. Reference numeral 79 denotes a support member for supporting the power unit 75 at the other end (right side in FIG. 1) in the longitudinal direction of the main body frame 3, and 80 denotes the power unit 75.
In the driver's seat provided on the front side (left side in FIG. 1) of
The driver's seat 80 is provided with a pair of operation levers 81 for operating the traveling device 2 and an operation panel 82 for operating other devices.

Next, the operation of the self-propelled soil improvement machine of the present embodiment having the above structure will be described. For example, when the earth and sand to be modified is put into the hopper 12 by a hydraulic excavator or the like, the earth and sand received by the hopper 12 is placed on the conveyor 13 below and conveyed. Soil improvement material supply device 1
9 supplies the soil improvement material in the storage tank 20 to the earth and sand conveyed by the conveyor 13 by the screw feeder 21 in a fixed amount. The earth and sand and the soil conditioner introduced into the mixing device 38 by the transport conveyor 13 are uniformly stirred and mixed by the paddle mixer 41, and the discharge conveyor 6
0 is derived as improved soil. The improved soil is conveyed by the discharge conveyor 60 and finally discharged outside the self-propelled soil improvement machine.

The effects obtained by the present embodiment will be sequentially described below. (1) Improvement of maintainability of mixing device Here, when foreign matter is mixed in the mixing device, when some parts of the mixing device need to be replaced, and when other periodic inspections are to be performed, an operator is required. It is necessary to perform maintenance and inspection work on the mixing device. However, as described above, in the conventional self-propelled soil improvement machine, various devices are compactly laid out on the main body frame in consideration of mobility, etc. It is very difficult to directly perform maintenance / inspection work on the device, and in reality, it was necessary to perform maintenance / inspection work after the mixing device was once removed from the main body frame.

The removing operation of this mixing device is usually carried out by lifting it from above with a crane or the like, or by hanging it between traveling devices while suspending the mixing device with a chain block or the like. However, when removing the mixing device by lifting it from above using a crane, etc.
It is necessary to remove all equipment located above the mixing device, such as the soil improvement material supply device, the conveyor, and the hopper located above the conveyor, but this removal work requires a lot of time and labor. It is work. Also, when suspending the mixing device with a chain block or the like and hanging it down between the traveling devices, it is necessary to prepare a long discharge conveyor located below the mixing device and appropriately remove the suspension device while balancing it. However, this work also required a great deal of time and effort.

Therefore, FIG. 9 shows an example of the work for removing the mixing device 38 in the self-propelled soil improvement machine of the present embodiment. First, in the state of FIG. 9, the discharge conveyor 6
0 has moved to the right in FIG. 9, creating a space below the mixing device 38. That is, in this state, for example, a chain block (not shown) or the like is used to suspend and hold the mixing device 38 from the upper support frame 11, and as described above, the mounting portion 48 (of the mixing device 38). (See FIG. 5) and the connection member 50 (see FIG. 5) are released, and the chain block is gradually loosened, so that the mixing device 38 can be easily placed on the ground between the left and right traveling devices 2 and 2. Can be hung. In FIG. 9, reference numeral 71 'denotes an auxiliary rail that is added to the rail 71. The end of the auxiliary rail 71' that opposes the rail 71 is supported by the auxiliary mounting member 69 ', and the other is a power unit 75. Is suspended and supported via a support member 83.

In the process up to the state of FIG. 9, first, the stopper pin 73 (see FIG. 8) is removed, the support member 74 of the discharge conveyor 60 is removed from the power unit 75, and the auxiliary rail 71 'is attached. The supporting member 74 removed from the power unit 75 is suspended and supported by the crane 37. Then, the turnbuckle 78 (see FIG. 1) is removed, the rail 37 and the auxiliary rail 71 ′ are slid by the crane 37, and the discharge conveyor 60 is slid to the right side in FIG. . In FIG. 9, although the crane 37 provided with the discharge conveyor 60 is used for suspension, it goes without saying that a separately prepared device such as a hoist or an overhead crane may be used.

In the present embodiment, the discharge conveyor 6
0 is slidably supported substantially parallel to the main body frame 3. Therefore, by sliding the discharge conveyor 60 to the state shown in FIG. 9 as described above, the discharge conveyor 60 can be moved as described with reference to FIG. A necessary space can be created below the mixing device 38 without the troublesome work of removing the device. As a result, the work of removing the mixing device 38 is facilitated, and the maintainability can be improved accordingly.

(2) Ease of incorporation of the discharge conveyor FIG. 10 shows an example of the operation of incorporating the discharge conveyor in the self-propelled soil improvement machine of this embodiment. As shown in FIG. 10, in the self-propelled soil improvement machine of the present embodiment, when incorporating the discharge conveyor 60, first, the auxiliary rail 71 'is attached in the above-described manner. Then, the discharge conveyor 60 is hung by, for example, a hoist or an overhead crane, and is conveyed so that one end (the left end in FIG. 10) of the slide member 72 (see FIG. 6) attached to the discharge conveyor 60 hangs on the auxiliary rail 71 ′. . And, as it is, the auxiliary rail 71 '
And slide on the rail 71 and slide the discharge conveyor 60 to the left side in FIG. 10 as shown by the arrow (FIG. 10 shows the state at this time).

At this time, the load on one side in the longitudinal direction of the discharge conveyor 60 (on the left side in FIG. 10) is supported by the rail 71, so that the center of gravity of the discharge conveyor 60 is positioned near the lower part of the power unit 75. After sliding, one end (left end in FIG. 10) of the discharge conveyor 60 is stored in the rail 71, and in this state, the suspension fulcrum is gradually moved to the other side of the discharge conveyor 60 (right side in FIG. 10). Then, the discharge conveyor 60 is slid to the left side in FIG. 10 as it is, and when the predetermined position is reached, the stopper pin 73
(See FIG. 6) is used to fix the discharge conveyor 60. And finally, the support member 74 and the turnbuckle 78.
(See Fig. 1) is attached and the assembling work is completed.

Usually, in a self-propelled soil improvement machine, the discharge conveyor is a device located below, so that it is often assembled at an early stage during assembly. However, in some cases, such as when replacing the discharge conveyor,
As described above, the work of removing the discharge conveyor is very troublesome, and the assembling work is also troublesome. In the present embodiment, as described above, the work of assembling the discharge conveyor 60 can be efficiently performed in order, and there is also an advantage that the assemblability of the discharge conveyor 60 is improved.

(3) Shortening of machine length Since a self-propelled soil improvement machine is usually transported by transportation means such as a trailer, the height dimension and the machine length dimension must be compact so as to meet the transportation restrictions. I have to. In the present embodiment, the discharge conveyor 60
Since it is configured to slide in the longitudinal direction, the stopper pin 73 (see FIG. 8), the support member 74, and the turnbuckle 78 (see FIG. 1) are removed during transportation, and conversely to the above, as shown in FIG. By sliding the discharge conveyor 60 to the left in FIG. 11 and sliding it so as to push it into the machine, the machine length can be shortened. At this time, in order to fix the discharge conveyor 60, it is preferable to connect the above-described bracket 76 and support arm 77 provided on the discharge conveyor 60 with a short turnbuckle 78 'prepared in advance.

That is, in FIG. 11, the state in which the discharge conveyor 60 is partially shown by a chain double-dashed line represents the normal state as shown in FIG. Can be pushed into the state indicated by. The discharge conveyor 60 can be slid to the left side in FIG. 11 to a position where the inclined portion is substantially in contact with the power unit 75, and thereby the machine length can be shortened from the normal dimension L by the dimension l. In addition, the self-propelled soil improvement machine can be made compact and the transportability can be improved. On the contrary, as shown in FIG. 11, if the inclined portion of the discharge conveyor 60 is extended so that the discharge conveyor 60 has a length that slightly clears the transportation restriction in a state of being pushed toward the machine side, the discharge conveyor 60 may be provided. There is also an advantage that the height of the discharge end (right end in FIG. 11) of 60 can be made higher than that in the state shown in FIG.

Another embodiment of the self-propelled soil improvement machine of the present invention will be described with reference to FIGS. 12 and 13. FIG. 12 is a front view showing a mounting structure of a discharge conveyor 60 provided in another embodiment of the self-propelled soil improvement machine of the present invention, a view corresponding to FIG. 6 above, and FIG. It is a partially enlarged view seen from the arrow XIII direction. 12 and 13, those parts that are the same as those in the previous drawings are designated by the same reference numerals, and a description thereof will be omitted. In FIGS. 12 and 13, reference numeral 84 denotes a roller provided on the conveyor frame 61 in place of the slide member 72 (see FIG. 6). The roller 84 is provided in a substantially horizontal portion of the conveyor frame 61 in the longitudinal direction (see FIG. 13). A plurality of them are arranged side by side in the middle and left and right directions, and are guided by the rails 71 to roll on the rails 71.
As shown in FIG. 12, the roller 84 penetrates the conveyor frame 61 in the width direction (horizontal direction in FIG. 12) and is rotatably supported by the support shaft 84A and the support shaft 8A.
4A and wheels 84B attached to both ends. That is, in the present embodiment, the discharge conveyor 60 is configured to slide along the rail 71 when the roller 84 rolls.

When a plurality of rollers 84 are provided in this way, it may be easier to compete with the rail 71 when the discharge conveyor 60 slides.
The possibility can be reduced by rotatably attaching B to the support shaft 84A. Further, in this embodiment, the stopper pin 73 is made slightly longer than that in the above-mentioned one embodiment, and the conveyor frame 61 is directly fixed to the rail 71. The other configurations are similar to those of the above-described embodiment, and similar effects can be obtained in this embodiment as well, and the discharge conveyor 60 can be slid more smoothly.

In the above description, the self-propelled soil improvement machine provided with the so-called crawler type traveling device 2 having the crawler belt 7 has been described as an example, but the present invention is not limited to this and, for example, a self-propelled vehicle provided with a so-called wheel type traveling body. It may be used as a run-type soil improvement machine. The above is also applicable to a self-propelled soil improvement machine using a so-called vibrating screen or fixed screen above the hopper 12. Further, in the case where a sieve is provided, the above configuration can be applied to the one in which a so-called swash is provided above the sieve in consideration of the earth and sand throwing property. Similar effects are obtained in these cases. In addition, the screw feeder 21 is given as an example of adding the soil improvement agent to the earth and sand.
Instead of this, another supply device such as a so-called rotary feeder may be provided. The self-propelled soil improvement machine equipped with the so-called mixing type mixing device 38 for mixing the soil and the soil improvement material with the paddle mixer 41 to produce the improved soil has been described as an example. It can also be applied to a self-propelled soil conditioner equipped with a so-called crushing type mixing device for crushing and mixing earth and sand and a soil conditioner using a striker or the like. Similar effects are obtained in these cases.

[0044]

According to the present invention, by sliding the discharge conveyor in the longitudinal direction of the main body frame, the space necessary for removing the mixing device is created below the mixing device without removing the discharge conveyor. can do. As a result, the work of removing the mixing device becomes easy, and the maintainability can be improved accordingly.

[Brief description of drawings]

FIG. 1 is a side view showing the overall structure of an embodiment of a self-propelled soil improvement machine of the present invention.

FIG. 2 is a top view showing the overall structure of an embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 3 is a horizontal cross-sectional view showing a detailed structure of a mixing device provided in an embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 4 is a side sectional view taken along the line IV-IV in FIG. 3, showing a detailed structure of a mixing device provided in an embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 5 is a top view showing a mounting structure of a mixing device provided in an embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 6 is a front view seen from the left side in FIG. 1 showing the mounting structure of the discharge conveyor provided in the embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 7 is an arrow VII in FIG. 6 showing a mounting structure of a discharge conveyor provided in an embodiment of the self-propelled soil improvement machine of the present invention.
It is the elements on larger scale seen from the direction.

FIG. 8 is an arrow VIII in FIG. 6 showing a mounting structure of a discharge conveyor provided in an embodiment of the self-propelled soil improvement machine of the present invention.
It is the elements on larger scale seen from the direction.

FIG. 9 is a diagram showing an example of the work of removing the mixing device in the embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 10 is a diagram showing an example of work for incorporating a discharge conveyor in an embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 11 is a diagram showing a state in which the captain is shortened in the embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 12 is a front view showing a mounting structure of a discharge conveyor provided in another embodiment of the self-propelled soil improvement machine of the present invention.

FIG. 13 is a partially enlarged view seen from the arrow XIII direction in FIG. 12 showing the mounting structure of the discharge conveyor provided in another embodiment of the self-propelled soil improvement machine of the present invention.

[Explanation of symbols]

2 traveling devices 3 body frame 4 truck frames 12 hoppers 13 Conveyor 19 Soil improvement material supply device 38 Mixing device 50 connecting members 60 discharge conveyor 68 Guide member 72 Slide member 84 Laura

Claims (5)

[Claims] 1. A traveling device, a main body frame provided on an upper part of a track frame of the traveling device, a hopper for receiving the reforming target earth and sand, and a conveyor for conveying the reforming target sediment received by the hopper. A soil improving material supply device for adding a soil improving material to the soil to be modified, a mixing device for mixing the soil to be modified and the soil improving material received from the conveyor to generate improved soil, and the main body frame And a discharge conveyer for discharging the improved soil produced by the mixing device, the self-propelled soil improvement machine. 2. The self-propelled soil conditioner according to claim 1, further comprising a guide member provided on the track frame and slidably supporting the discharge conveyor. 3. The self-propelled soil improvement machine according to claim 2, wherein the discharge conveyor has a slide member that slides on the guide member. 4. The self-propelled soil improvement machine according to claim 2, wherein the discharge conveyor has a roller that rolls on the guide member. 5. The self-propelled soil improvement machine according to any one of claims 1 to 4, wherein a width dimension of the mixing device is set to be smaller than a lateral dimension of the body frame, and the body frame. A self-propelled soil improvement machine, which is provided with a connecting member for connecting the main body frame and the mixing device.