JP3798282B2 - Self-propelled soil improvement machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-propelled soil improvement machine that receives soil and mixes it with a soil improvement material and reforms it.
[0002]
[Prior art]
In recent years, the construction of so-called construction recycling promotion plans by the Ministry of Construction (1997) has led to the reuse of waste, such as the construction of gas pipes, waterworks and sewerage, and other road construction and foundation work. A self-propelled type that mixes and mixes earth and sand with soil improvement materials at various sites where it is produced, and generates improved soil products for recycling and ground reinforcement for laying on the surface layer of residential land and roadbeds. The need for soil improvement machines is expanding.
[0003]
As this kind of thing, the self-propelled soil improvement machine etc. which are described in Unexamined-Japanese-Patent No. 2000-45263, for example have already been proposed. In this prior art, while the earth and sand received by the hopper are conveyed by a conveyor, the soil quality improving material is supplied onto the conveyed earth by a soil quality improving material supply device and introduced into the mixing device, and the sand and the soil quality are improved by this mixing device. The improved soil produced by mixing the materials is discharged out of the machine by a carry-out conveyor.
[0004]
In this prior art, a gate having a predetermined area (width and height) is formed at the end of the hopper opposite to the transfer conveyor on the wall surface in the transfer direction by the transfer conveyor, and the transfer conveyor conveys the inside of the hopper. The earth and sand transported out of the container is cut out with a predetermined cross-sectional area (width and height) when passing through the gate. In the above prior art, the earth and sand are continuously cut out from the hopper with a predetermined cross-sectional area.
[0005]
In addition, between the support rollers that support the conveyor belt of the conveyor, the earth and sand supply constituted by a so-called conveyor scale that measures the weight of the earth and sand cut out from the hopper with a substantially constant volume as described above via the conveyor belt. A quantity measuring means is provided. And according to the detection result of this earth and sand supply amount measuring means, the mixing ratio of earth and sand and the soil conditioner is controlled by controlling the supply amount of the soil conditioner by the soil conditioner feeder.
[0006]
[Problems to be solved by the invention]
In the above prior art, the earth and sand thrown into the hopper is sequentially transported to the wall surface side of the hopper provided with the gate by the transport conveyor. At this time, the earth and sand that do not pass through the gate stays by interfering with the hopper wall surface on which the gate is provided, and receives a pressing force from the earth and sand conveyed later. In this case, depending on the properties of the earth and sand to be modified, for example, when clay with extremely small particle size and high viscosity is the object to be reformed, it is further pressed against the wall surface by the earth and sand that are staying and transported later. There is a case where the earth and sand that has been compacted and compacted there. As a result, the amount of earth and sand cut out to the outside of the hopper is reduced, and in some cases, a so-called cross-linking phenomenon occurs in the hopper, and the earth and sand may not be carried out of the hopper at all.
[0007]
Moreover, in order to produce | generate quality improved soil, it is important that the mixing ratio of earth and sand and a soil quality improvement material is a suitable value. In the above prior art, consideration is given to making the earth and sand supply volume constant by cutting out the earth and sand in the hopper through the gate. However, the bulk density of the earth and sand that is cut out is the property of the earth and sand and the compaction in the hopper. Depending on conditions, the weight per unit volume varies. As a result, even if the earth and sand supply volume appears to be constant, assuming that the earth and sand supply volume is constant, the actual earth and sand supply quantity will fluctuate. Therefore, in the above prior art, the weight of the supplied soil is detected by the soil supply amount measuring means, and the supply amount of the soil quality improving material is controlled according to the detection result. Therefore, in order to produce high quality improved soil, the reliability of the detection result of the sediment supply amount measuring means is important.
[0008]
By the way, since the earth and sand supply amount measuring means is configured to detect the weight of the transported earth and sand via the transport belt, in order to accurately measure the weight of the transported earth and sand, the transport conveyor before and after the transport belt is sufficiently bent. It is necessary to ensure a sufficient interval between the support rollers that support the roller. However, if the dimension between the support rollers is increased, the length in the longitudinal direction of the transport conveyor is increased accordingly, and the length of the entire self-propelled soil improvement machine is increased. Since a self-propelled soil improvement machine is generally transported by transportation means such as a trailer, transportation restrictions are defined for the captain, and such a lengthening of the captain is not necessarily preferable. In addition, if the captain becomes longer, it will be necessary to drive while paying attention to surrounding obstacles when traveling on the operating site, and movement in a narrow space becomes more difficult. As a result, in the above-described prior art, it is difficult to widen the dimension between the support rollers due to such dimensional restrictions, and accordingly, the accuracy of the detection result of the sediment supply amount measuring means may be reduced. Therefore, the above prior art has room for further improvement in terms of improving the quality of the improved soil by setting the mixing ratio to an ideal value.
[0009]
The present invention has been made on the basis of the above matters, and the purpose thereof is to smoothly transport the earth and sand in the hopper to the outside of the hopper to ensure a stable amount of earth and sand and to increase the amount of earth and sand more accurately. An object of the present invention is to provide a self-propelled soil improvement machine capable of generating high-quality improved soil by measuring and controlling the mixing ratio with the soil improvement material.
[0010]
[Means for Solving the Problems]
(1) In order to achieve the above object, the present invention provides a self-propelled soil conditioner for mixing and modifying received earth and sand with a soil conditioner, and a main body frame provided with traveling means, on the main body frame. A mixing device for mixing the earth and sand and the soil quality improving material, a conveyor for supplying the earth and sand to the mixing device, A hopper for receiving earth and sand provided at an upper position of the conveyor, a movable wall that constitutes a downstream side wall surface of the conveyor of the hopper, and that supports the upper end on the main body frame via an arm so that the lower end makes a circular motion, A drive device connected to the movable wall; a soil conditioner supply device provided on the main frame so as to supply a soil conditioner to the earth; and a vertically movable position on the downstream side of the conveyor. A pressurizing means for contacting the upper surface of the earth and sand cut out from the hopper and conveyed by the conveyor, and pressurizing the earth and sand with the force of its own weight; The earth and sand volume measuring means for measuring the volume of the earth and sand pressed by the pressure means, and the carry-out conveyor for carrying out the improved soil mixed by the mixing device to the outside of the machine When It is set as the structure provided with.
[0011]
In the present invention, the downstream side wall surface in the hopper conveyance direction of the conveyance conveyor in the hopper is a movable wall, so that the sediment in the hopper is pressed by the conveyance conveyor even when, for example, viscous soil or the like is to be modified. The earth and sand pressed against the movable wall can be loosened by the movement of the downstream side wall surface. Thereby, it is possible to prevent the earth and sand from being compacted and strongly consolidated in the hopper, and to prevent the occurrence of a bridging phenomenon in the hopper.
[0012]
Moreover, the bulk density of the earth and sand cut out from the hopper can be made substantially constant by providing a pressurizing means above the conveyor and pressurizing the earth and sand on the conveyor to be transported outside the hopper. Then, by measuring the volume of the transported earth and sand having a substantially constant bulk density in this way by the earth and sand volume measuring means, the amount of earth and sand supplied can be measured more accurately. This makes it possible to accurately measure the amount of earth and sand supplied from the conveyor, regardless of the properties of the soil to be modified and the state in which it is put into the hopper. Can be controlled.
[0013]
Therefore, high quality is achieved by smoothly transporting the earth and sand in the hopper to ensure a stable earth and sand supply amount, and more accurately measuring the amount of earth and sand supplied and controlling the mixing ratio with the soil improvement material. The improved soil can be generated.
[0014]
(2) In order to achieve the above object, the present invention also relates to a self-propelled soil improvement machine that mixes and reforms received earth and sand with a soil improvement material, and a main body frame provided with traveling means, and the main body. A mixing device that is provided on a frame and mixes the earth and sand and the soil quality improving material; a conveyor that supplies the earth and sand to the mixing device; A hopper for receiving earth and sand provided at an upper position of the conveyor, a movable wall that constitutes a downstream side wall surface of the conveyor of the hopper, and that supports the upper end on the main body frame via an arm so that the lower end makes a circular motion, A driving device connected to the movable wall, a storage tank provided in the main body frame so as to supply soil improvement material to the earth and sand, and a lower portion of the tank, and the pitch increases toward the outlet side. A soil conditioner supply device comprising a screw feeder having a screw, and a vertically movable position on a downstream position on the transport conveyor, in contact with the upper surface of the earth and sand cut out from the hopper and transported by the transport conveyor, A pressurizing means for pressurizing the earth and sand with its own weight, The earth and sand volume measuring means for measuring the volume of the earth and sand pressed by the pressurizing means and a carry-out conveyor for carrying out the improved soil mixed by the mixing device to the outside of the apparatus are provided.
[0015]
(3) In the above (1) or (2), preferably, control means is provided for controlling the supply amount of the soil improvement material in the soil improvement material supply device based on the detected value of the sediment volume measurement means.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a self-propelled soil improvement machine of the present invention will be described with reference to the drawings.
A self-propelled soil improvement machine is, for example, a construction-generated soil improvement such as a construction-generated soil generated at a construction site, etc., mixed with a soil-improvement material at the site to produce an improved soil product for recycling, or Soil and sand excavated on the surface layer of residential land construction sites, etc. are reformed on the spot to generate improved soil that is backfilled to the surface layer for ground reinforcement, or obtained by excavating predetermined sites in the road construction site, etc. It is widely used in surface layer stabilization treatments such as improving the soil in situ and generating improved soil for laying as roadbed material.
[0017]
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 thereof, and FIG. 3 is a front view seen from the left side in FIG.
1 to 3, reference numeral 1 denotes a traveling body. The traveling body 1 includes a pair of left and right traveling devices 2 and a pair of main body frames 3 extending substantially parallel to the upper portion of the traveling device 2. It consists of and. Reference numeral 4 denotes a track frame of the traveling device 2, and the track frame 4 is connected to the lower portion of the main body frame 3. 5 and 6 are driven wheels (idlers) and drive wheels provided at both ends of the track frame 4, 7 is a crawler belt (endless track crawler belt) wound around the driven wheels 5 and the drive wheels 6, and 8 is a drive wheel 6. It is a directly connected drive device. Reference numerals 9a and 9b denote a plurality of support posts erected on the main body frame 3. The support posts 9a and 9b support the support frames 10 and 11, respectively.
[0018]
Reference numeral 12 denotes a hopper (details will be described later) for receiving earth and sand to be modified. The hopper 12 is formed in a substantially frame shape having an open top and bottom, and is supported by the support frame 10 on one side in the longitudinal direction of the main body frame 3. (Left side in FIG. 1). In addition, the earth and sand to be reformed are often input by an input heavy machine such as a hydraulic excavator, and the hopper 12 is formed so as to expand upward in consideration of the convenience of the earth and sand input.
[0019]
Reference numeral 13 denotes a transfer conveyor for transferring the earth and sand received by the hopper 12, and the transfer conveyor 13 extends upwardly from the lower side of the hopper 12 to the upper side of the inlet cylinder 202 of the mixing device 200 described later. Reference numeral 14 denotes a conveyor frame of the conveyor 13, and the conveyor frame 14 is supported by the support posts 9a and 9b. Reference numerals 15 and 16 respectively denote driving wheels and driven wheels provided at both ends of the conveyor frame 14, reference numeral 17 denotes a conveying belt wound around the driving wheels 15 and driven wheels 16, and reference numeral 18 denotes a plurality of supporting surfaces of the conveying belt 17. It is a support roller. The drive wheel 15 is connected to a drive device 19 (see FIG. 31 to be described later) that drives the drive wheel 15 to drive the conveyance belt 17 in a circulating manner.
[0020]
FIG. 4 is a side sectional view schematically showing the structure of the hopper 12, and FIG. 5 is a sectional view taken along the line VV in FIG.
4 and 5, reference numeral 12 </ b> A denotes a movable wall constituting a wall surface on the downstream side (right side in FIG. 4) in the direction of sediment transport by the transport conveyor 13 of the hopper 12. The movable wall 12A is spaced apart from the conveyor belt 17 of the conveyor 13 by a predetermined distance, and a gap between the movable wall 12A and the conveyor belt 17 opens as a sediment outlet 12B of the hopper 12. Yes. And the earth and sand in the hopper 12 are sequentially conveyed by the conveyance conveyor 13 from the lower one, and when passing through this earth and sand outlet 12B, it is cut out by the width and height of this earth and sand outlet 23B.
[0021]
Reference numeral 20 denotes a bracket fixed to the outer wall of the movable wall 12 </ b> A, and 21 denotes an eccentric shaft inserted through the bracket 20. The eccentric shaft 21 is rotatably supported by a frame (not shown) positioned above the support frame 10 (see FIG. 3), for example, with a rotation center shaft 21A protruding at both ends, and with respect to the rotation center shaft 21A. The eccentric peripheral body 21B is inserted into the bracket 20 so as to be rotatable. 22A is a bracket fixed to a position higher than the bracket 20 on the outer wall of the movable wall 12A, 22B is a bracket fixed to a frame 23 located above the support frame 10 (see FIG. 3), and 24 is interposed between the brackets 22A and 22B. In the provided arm, both ends of the arm 24 are rotatably connected to the brackets 22A and 22B via pins 25 and 25. That is, the movable wall 12 </ b> A constituting the downstream side wall surface of the hopper 12 is supported by a frame (not shown) located above the support frame 10 and the frame 23 independently of the hopper 12.
[0022]
Reference numeral 26 denotes a drive device (see FIG. 5) provided on the support frame 10 (see FIG. 2). The drive device 26 has the rotation center shaft on one end side (left side in FIG. 5) of the eccentric shaft 21. Directly connected to 21A. In other words, when the driving device 26 is driven, the lower end of the movable wall 12A of the support structure circulates in a substantially elliptical locus that is pushed up inside the hopper 12 as indicated by an arrow in FIG. It is designed to move (vibrate). As a result, the movable wall 12A mainly moves the sediment on the downstream side in the sediment transport direction by the transport conveyor 13 in the hopper 12 (that is, the sediment on the right side in FIG. 4 in other words, the sediment pressed against the movable wall 12A). It works to loosen by applying force in the direction.
[0023]
Reference numeral 27 denotes a bracket fixed to the frame 28 positioned above the support frame 10 (see FIG. 3), and 29 denotes an arm supported by the bracket 27 via a pin 30 so as to be rotatable (swingable). A pressure roller 31 is rotatably provided at the tip of the arm 29 via a pin 32. The pressure roller 31 is formed on the unevenness of the surface of the transport earth and sand on the transport belt 17 cut out from the earth and sand outlet 12B. It follows the surface of the transport soil while rotating up and down following it. As a result, the earth and sand passing through the pressure roller 31 are appropriately pressed with a predetermined force by the weight of the pressure roller 31 so that the bulk density is substantially constant.
[0024]
Reference numeral 33 denotes a height detection means provided above the pressure roller 31. The height detection means 33 is supported by a frame 34 located above the support frame 10 (see FIG. 3). The height detection means 33 is composed of a known ultrasonic sensor of this type, and detects the time until the transmitted ultrasonic wave is reflected by the pressure roller 31 and returns. The detection result is output to a volume calculation circuit 35 (described later with reference to FIG. 31) as needed.
[0025]
In FIG. 4, the case where the movable wall 12A orbits along the clockwise trajectory in the figure is illustrated. However, the rotation direction of the drive device 26 is reversed and the orbiting motion occurs along the counterclockwise trajectory in the figure. It doesn't matter. Further, the movable wall 12A, the pressure roller 31, the height detection means 33, and the like described above are protected by the cover 9c (see FIG. 1), and the hopper 12 and the soil conditioner supply device 36 described below (FIG. 1). (See below).
[0026]
Returning to FIGS. 1 to 3, reference numeral 36 denotes a soil improvement material supply device that supplies soil improvement material to the soil on the conveyor 13. This soil improvement material supply device 36 is a soil improvement material having a substantially rectangular horizontal section. A storage tank 37, a screw feeder 38 that leads the soil improvement material in the storage tank 37 downward, and a substantially square pyramid-shaped chute 39 that serves as a funnel for guiding the soil improvement material in the storage tank 37 to the screw feeder 38. It consists of and.
[0027]
FIG. 6 is a side view showing the detailed structure of the soil improvement material supply device 36, FIG. 7 is a top view thereof, and FIG. 8 is a horizontal sectional view taken along the VIII-VIII section in FIG.
6 to 8, 39A is a flange-shaped frame plate above the chute 39, and the storage tank 37 covers the bellows portion 37A continuously provided on the frame plate 39A and the upper portion of the bellows portion 37A. And a top plate portion 37B. The bellows portion 37A is made of a flexible material that can expand and contract (for example, a polyethylene rubber material), and is reinforced by a plurality of reinforcing rings 40 because the internal pressure from the soil improvement material stored therein acts. . At this time, since the internal pressure due to the soil quality improving material in the bellows portion 37A becomes higher as it goes downward, the mounting pitch of the reinforcing ring 40 becomes narrower as it goes down as shown in FIG.
[0028]
41 is an inlet for filling the soil improvement material provided in the approximate center of the top plate portion 37B (see FIG. 7), 42 is an opening / closing lid of the soil improvement material reception port 41, and the opening / closing lid 42 is a top plate portion. It is attached to 37B via a hinge 43 (see FIG. 7). 42A is a handle (see FIG. 7) provided as a consideration for the opening / closing operation of the opening / closing lid 42.
[0029]
44 is a plurality of mounting portions (three in this example) provided on the outer peripheral portion of the top plate portion 37B, and 45 is a column fixedly suspended below the mounting portion 44. Pin holes 45A and 45B (see FIG. 9 described later for the lower pin hole 45B) are formed at predetermined positions. Reference numeral 46 denotes a plurality of (three in this example) guide cylinders that are inserted through the columns 45. The guide cylinders 46 penetrate through the base plate 47 (see FIG. 1) on the support frame 11 (see FIG. 1). It is fixed and penetrates and fixes the frame plate 39A of the chute 39. Further, a pin hole (not shown) is formed in the vicinity of the upper end of the guide tube 46 protruding from the frame plate 39A. With such a structure, each of the columns 45 can be inserted into each guide tube 46 so as to be slidable up and down, and can protrude to the lower side of the base plate 47. And the above-mentioned bellows part 37A is expanded and contracted with the slide of the support | pillar 45, and it has the structure where the height of the storage tank 37 is variable.
[0030]
Reference numeral 48 denotes a stopper pin for fixing the support column 45 to the guide tube 46. The stopper pin 48 is inserted into the pin hole 45A or 45B of the support column 45 through a pin hole (not shown) of the guide tube 46. That is, for example, during operation, the bellows portion 37A is extended, and the stopper pin 48 is inserted into the pin hole 45B through the guide tube 46 to ensure a sufficient internal volume of the storage tank 37 (the state shown in FIG. 6). ) When the self-propelled soil conditioner is transported by a trailer or the like, the bellows portion 37A is reduced and the stopper pin 48 is inserted into the pin hole 45A through the guide tube 46. It can be held in a state where the overall height is lowered to a height that clears the transport restrictions. A detailed side view of the soil conditioner supply device 36 in this state is shown in FIG.
[0031]
39B is a soil conditioner outlet (see FIG. 8) to the screw feeder 38 provided at the lower portion of the chute 39. This soil conditioner outlet 39B is the longitudinal direction of the screw feeder 38 (left and right direction in FIG. 8) in the longitudinal direction. It is formed in a substantially rectangular shape. Further, 39C is a soil quality improvement material inlet (see FIG. 8) from the storage tank 37 provided in the upper portion of the chute 39, and the chute 39 is downward from the soil quality improvement material inlet 39C toward the soil quality improvement material outlet 39B. It is formed in a substantially quadrangular pyramid with a reduced diameter. The inside of each corner of the chute 39 is formed with a so-called R material or round with a weld bead so as to prevent the soil quality improving material from staying in each corner.
[0032]
39D is a plurality of air outlets (see FIG. 8) provided on each inclined surface of the chute 39, and this air outlet 39D injects compressed air from the compressor 49 (see FIG. 1) into the chute 39. . As a result, a gap is instantly created between the inner wall of the chute 39 and the soil improvement material, and the so-called bridge or rathole phenomenon is prevented from occurring, so that the soil improvement material is smoothly introduced into the screw feeder 38. It is considered to be.
[0033]
10 is a side view showing the detailed structure of the screw feeder 38, and FIG. 11 is a top view thereof.
10 and 11, reference numeral 50 denotes a substantially cylindrical casing of the screw feeder 38. The casing 50 is rotatably provided between the end casings 50A and 50B and the end casings 50A and 50B. The intermediate casing 50C is divided into three parts (the connection structure will be described later). 51 is a soil conditioner introduction port provided in the intermediate casing 50C. This soil conditioner introduction port 51 is formed in a substantially rectangular shape with the longitudinal direction of the screw feeder 38 (the left-right direction in FIG. 11) as the longitudinal direction. It is possible to communicate with 39 soil improvement material outlets 39B (see FIG. 8).
[0034]
52 is a soil conditioner outlet port formed by obliquely cutting out the lower side of the end casing 50B. This soil conditioner outlet port 52 is a downstream end of the transport conveyor 13 (see FIG. 1) in the transport direction ( It is located above the vicinity of the right end in FIG. In addition, the soil improvement material outlet 52 has a predetermined degree corresponding to the inclination of the screw 56 to some extent, as shown in FIG. 10, in order to prevent intermittent release of the soil improvement material accompanying the pitch of the screw 56 (described later). It is provided diagonally so as to have an inclination of. 53A and 53B are end brackets provided at both ends of the casing 50, 54A and 54B are bearings supported in the end brackets 53A and 53B, respectively, and 55 is a hollow (may be solid) rotation provided in the casing 50. The both ends of the rotating shaft 55 are rotatably supported by the bearings 54A and 54B. Reference numeral 56 denotes a screw (auger) spirally provided on the outer periphery of the rotary shaft 55. The pitch of the screws 56 gradually increases from the soil improvement material introduction port 51 side toward the soil improvement material discharge port 52 side. Yes.
[0035]
57A and 57B are legs for supporting the end casings 50A and 50B, 58 is a base plate to which the legs 57A are bolted, and this base plate 58 is a drive device 59 for the screw feeder 38 arranged in parallel with the end casing 50A. (See FIG. 11). 59A is an output shaft of the drive device 59, 60 is a sprocket provided on the output shaft 59A, 61 is a sprocket provided on the other end (right end in FIG. 11) of the rotating shaft 55, and 62 is wound around the sprockets 60 and 61. It is a chain that has been turned. That is, the driving force of the driving device 59 is transmitted to the rotating shaft 55 through the chain 62, and the screw 56 is rotated. Reference numeral 63 denotes a rotation speed detection means for detecting the rotation speed of the output shaft 59A of the drive device 59. This rotation speed detection means 63 is constituted by an encoder or the like, for example, and is detected by a control device 148 (see FIG. 31 described later). The result is output.
[0036]
12 is a partially enlarged view showing a connection structure between the end casing 50B and the intermediate casing 50C, and FIG. 13 is a cross-sectional view taken along the XIII-XIII section in FIG.
In FIGS. 12 and 13, 64A and 64B are a protruding portion and a stepped portion provided at opposite ends of the end casing 50B and the intermediate casing 50C, respectively, and the protruding portion 64A is fitted into the stepped portion 64B. 65 is a bracket provided at the end of the end casing 50B facing the intermediate casing 50C, and 66A to 66C are a plurality of brackets radially provided at the end facing the end casing 50B of the intermediate casing 50C in a radial direction. The bracket 66A is provided on the upper side in the radial direction of the intermediate casing 50C, that is, on the soil improvement material introduction port 51 (see FIG. 10) side.
[0037]
67A and 67B are pin insertion holes drilled at positions corresponding to each other of the brackets 65 and 66A. By inserting a stopper pin 68 (see FIG. 10) into these pin insertion holes 67A and 67B, the intermediate casing 50C is formed. It is fixed to the end casing 50B. Reference numeral 69 denotes, for example, a substantially regular hexagonal protrusion provided on each of the brackets 66A to 66C (two in this example). The protrusion 69 is formed of, for example, a screwed hexagon bolt head. . Although not particularly illustrated, the above structure is also provided in the opposite end portions of the end casing 50A and the intermediate casing 50C (see FIG. 10). That is, in FIG. 10, when the stopper pins 68 and 68 are extracted and the intermediate casing 50C and the end casings 50A and 50B are unfixed, the intermediate casing 50C is held at the end by gripping the protrusion 69 with a tool such as a spanner, for example. The casings 50A and 50B can be rotated.
[0038]
14 is a side view showing the support structure of the screw feeder 38, and FIGS. 15 and 16 are partially enlarged views as seen from the directions of arrows XV and XVI in FIG.
14 to 16, reference numeral 70 denotes an upper and lower split type outer casing. The outer casing 70 includes upper casings 70A and 70B and a lower casing 70C, and an intermediate casing 50C (see FIG. 10) on the inner side. ) Is to be held around. 71A and 71B are flanges (see FIGS. 15 and 16) provided at opposite ends of the upper casings 70A and 70B and the lower casing 70C, respectively, and these are fixed by bolts, nuts, and the like via washers (not shown), for example. . 72A and 72B are connecting members of the upper casings 70A and 70B and the chute 39, respectively. These connecting members 72A and 72B are fixed to the outer walls of the upper casings 70A and 70B and the chute 39 by, for example, welding.
[0039]
73A and 73B are support members suspended from the outer wall surface of the chute 39, 74A and 74B are support bases fixed to the lower ends of the support members 73A and 73B, respectively. 38 base plates 58 and legs 57B (both see FIG. 10) are supported. That is, the screw feeder 38 is supported from the chute 39 via the outer casing 70 and the support bases 74A and 74B. Reference numeral 75 denotes a seal member (see FIGS. 15 and 16) interposed between the intermediate casing 50C and the outer casing 70. The seal member 75 is, for example, a rubber lining provided on the inner peripheral surface of the outer casing 70. It is configured. As shown in FIG. 1, the screw feeder 38 is inclined upward in the transfer direction (left direction in FIG. 1) of the soil-improving material and is upstream in the transfer direction (FIG. 1). The middle right side is arranged so as to be lower than the downstream side in the transfer direction (left side in FIG. 1) so as to enter the lower space.
[0040]
With the above configuration, the screw feeder 38 is provided at an upper position of the mixing device 200 to be described later, and the soil improvement material introduced from the previous chute 39 through the soil improvement material introduction port 51 is moved to the left in FIG. The soil is transported in the vicinity of the end of the transport conveyor 13 on the downstream side in the transport direction (right side in FIG. 1) from the soil quality improving material outlet 52 provided in the lower portion of the end casing 50B. In addition, a certain amount of soil quality improver is added.
[0041]
1-3, 76 is the crane (refer FIG.2 and FIG.3) provided in the one side (upper side in FIG. 2) of the self-propelled soil improvement machine, This crane 76 is one side (FIG. 2 on the support frame 77 attached to the main body frame 3. The crane 76 includes a support portion 76A erected upward from a support base 77, an arm 76B whose base end portion is pivotally connected to the support portion 76A, expands and contracts in the longitudinal direction, and rotates substantially horizontally, and the arm 76B. And a winch 76D provided at the tip of the arm 76B. Normally, when the soil improvement material is filled in the storage tank 37, the upper opening / closing lid 42 (see FIG. 7) is opened, and the flexible container is lifted by the crane 76 to receive the soil improvement material receiving port 41 (see FIG. 7). Is supposed to be inserted into
[0042]
At this time, as shown in FIG. 6 above, the top plate portion 37B is positioned substantially directly below the soil improvement material receiving port 41 (see FIG. 7) in the storage tank 37 via the support members 78A and 78B. A cutter 79 protruding upward is provided. As a result, the flexible container inserted into the soil improvement material receiving port 41 by the crane 76 is pressed against the cutter 79 by its own weight, and the bottom portion is torn, and the soil improvement material flows out into the storage tank 37 from here. Yes.
[0043]
In FIG. 7, reference numeral 80 denotes an exhaust port provided in the top plate portion 37B. The exhaust port 80 is provided with a filter (not shown). That is, when the soil improvement material is filled, the internal atmosphere of the storage tank 37 that is pushed away by the soil improvement material and flows out from the gap between the soil improvement material inlet 41 and the flexible container is released from the exhaust port 80. It is like that. Thus, consideration is given to preventing the soil improvement material soared from flowing out of the storage tank 37 together with the flowing out internal atmosphere.
[0044]
Reference numeral 200 denotes a mixing device that mixes the earth and sand introduced from the conveyor 13 and generates improved soil.
FIG. 17 is a top view showing the detailed structure of the mixing apparatus 200, and FIG. 18 is a side sectional view taken along the XVIII-XVIII section in FIG.
17 and 18, reference numeral 201 denotes a substantially box-shaped main body of the mixing device 200. The mixing device main body 201 has an inlet cylinder of earth and sand and a soil conditioner on the upper side in one longitudinal direction (left side in FIG. 18). On the other side (right side in FIG. 18) of the body 202, an improved soil outlet cylinder 203 is provided. 201A is an upper lid that forms the upper surface of the mixing apparatus main body 201 excluding the inlet cylinder 202. The upper lid 201A is arranged in parallel with the inlet cylinder 202 on the mixing apparatus main body 201 (three in this example). One side in the width direction (upper side in FIG. 17) is bolted to the upper part of the mixing apparatus main body 201 and is detachably provided on the upper part of the mixing apparatus main body 201 (details will be described later). That is, by removing the upper lid 201A and the inlet cylinder 202, the upper surface of the mixing apparatus main body 201 can be fully opened.
[0045]
FIG. 19A is a view showing a mounting structure of the upper lid 201A on the other side in the width direction (lower side in FIG. 17) with respect to the mixing device body 201, and is an enlarged view of the XIXa portion in FIG. FIG. 19B is a cross-sectional view taken along the XIXb-XIXb cross section in FIG.
In FIG. 19A and FIG. 19B, reference numeral 204 denotes a pressing plate fixed to the upper portion of the other side in the width direction of the upper lid 201A (the lower side in FIG. 17). As shown to (a), it has the substantially single character-shaped groove | channel 204A, and it protrudes and is provided from the edge part of the upper cover body 201A. Reference numeral 205 denotes a bracket (see FIG. 19B) attached to the side surface of the mixing apparatus main body 201 via an attachment member 206 (see FIG. 19B). The bracket 205 is shown in FIG. 19B. For example, two sheets of the same shape are arranged in parallel in the vertical direction in FIG. 19A so as to be located below the presser plate 204. Yes. Reference numeral 207 denotes a T screw. The T screw 207 includes a shaft 207A that engages with the groove 205A of the bracket 205 and a screw 207B that protrudes from the shaft 207A. "".
[0046]
That is, a wing nut 208 is screwed onto the screw 207B of the T screw 207, and the presser plate 204 is pressed against the mixing device main body 201 by the wing nut 208. The upper lid 201A is bolted to a predetermined position of the mixing apparatus body 201 on one side in the width direction (upper side in FIG. 17) as described above, and thus the other side in the width direction (lower side in FIG. 17). ) Is firmly fixed at a predetermined position on the mixing apparatus main body 201.
[0047]
Reference numeral 209 denotes a stopper, and the stopper 209 prevents the T screw 207 from being detached when the upper lid 201A is fixed due to loosening of the wing nut 208 or the like. At this time, in the state shown in FIG. 19B, the shaft 207A of the T screw 207 is supported by the inner side (left side in FIG. 19B) of the “U” -shaped groove 205A of the bracket 205. However, by loosening the wing nut 208, the shaft 207A can move to the outside of the groove 205A (the right side in FIG. 19B). Then, when the shaft 207A is moved, the screw 207B can be rotated with the shaft 207A as a fulcrum, and the T screw 207 can be rotated without being hooked on the stopper 209. Accordingly, consideration is given so that the presser of the upper lid 201A can be easily removed without using a specific tool.
[0048]
As described above, the upper lid 201A has a presser on the other side in the width direction (lower side in FIG. 17) and the bolt fastening on the one side in the width direction (upper side in FIG. 17) is released, thereby It can be easily removed by sliding it downward.
[0049]
Although not described in detail, as shown in FIG. 17, a stopper 210 that comes into contact with the end of the upper lid 201A is provided on the upper side of one side in the width direction (upper side in FIG. 17) of the mixing apparatus main body 201. It is provided so that it can be easily positioned when the upper lid 201A is attached. Reference numeral 211 denotes a handle provided on the upper portion of the upper lid 201A, and this handle 211 is designed for the attaching / detaching work of the upper lid 201A.
[0050]
17 and 18, reference numeral 212 denotes a plurality of (two in this example) paddle mixers provided in the mixing apparatus main body 201. The paddle mixers 212 are approximately in the longitudinal direction of the mixing apparatus main body 201 (the left-right direction in FIG. 17). A hollow rotating shaft 213 (which may be solid) disposed in parallel and a plurality of paddles 214 provided radially on the rotating shaft 213 are configured. The paddle 214 has a smooth surface inclined at a predetermined angle with respect to the axial direction of the rotation shaft 213 (in this case, the right direction in FIG. 17) so as to face the rotation direction of the paddle mixer 212.
[0051]
Reference numerals 215 and 216 denote a pair of support shafts connected to both ends of the rotating shaft 213. These support shafts 215 and 216 are respectively provided at both ends in the longitudinal direction (left and right direction in FIG. 18) of the mixing apparatus main body 201 and bearings 217 and 217. (Refer to FIG. 18). The support shaft 215 is supported by a bearing 217 so as to be slidable in the axial direction (left-right direction in FIG. 18). However, the support shaft 216 may be slidable or both may be slidable. In addition, the bottom of the upstream end of the transport direction of the earth and sand and the soil conditioner in the mixing apparatus main body 201 (below the support shaft 215 of the mixing apparatus body 201 and the fastening portion of the rotary shaft 213) An accumulation preventing member 218 (see FIG. 18) is provided.
[0052]
FIG. 20 is a view showing a state in which the paddle mixer 212 and the support shafts 215 and 216 are attached.
In FIG. 20, reference numeral 219 denotes a flange fixed to both end faces of the rotating shaft 213, and the end face of the flange 219 protrudes slightly from the end face of the rotating shaft 213. Reference numerals 220 and 221 denote flanges fixed to end faces of the support shafts 215 and 216 facing the rotation shaft 213, respectively. The flanges 220 and 221 are fixed by flanges 219 and 219 and bolts 222 of the rotation shaft 213 facing each other. . However, this fixing structure is not limited to bolt fastening, and may be a fixing structure using pins, clamps, or the like.
[0053]
219a is a step provided at the approximate center of the flange 219, and 220a and 221a are protrusions provided at the approximate centers of the flanges 220 and 221, respectively. In the state of FIG. 20, these protrusions 220a and 221a are the step 219a and 219a. Is fitted. That is, the rotating shaft 213 is positioned with respect to the support shafts 215 and 216 by an inlay structure and is detachably fastened so as to be substantially coaxial with each other.
[0054]
FIG. 21 is a side cross-sectional view of the mixing apparatus 200 showing the state of the process of removing the paddle mixer 212.
In the state shown in FIG. 21, the inlet cylinder 202 and the upper lid 201A are removed, and the paddle mixer is moved from the support frame 11 (see FIG. 1) or the like located above the mixing device 200 by a chain block (not shown) or the like. This is a state in which 212 is suspended and supported. When removing the paddle mixer 212, first, the flanges 219 and 220 and the flanges 219 and 221 of the rotating shaft 213 and the supporting shaft 216 are unfastened from such a state, and the supporting shaft 215 is removed. Is slid in the direction of arrow A in FIG. 21 to create a gap between the flanges 219 and 220 and the flanges 219 and 221. Thus, in the present embodiment, the paddle mixer 212 can be slightly moved to the left in FIG. 21 as indicated by arrow B, and can be lifted upward and removed.
[0055]
Returning to FIG. 18, 223 is a gear provided at the other end (right end in FIG. 18) of the support shaft 216, 224 is a drive device of the paddle mixer 212, and an output shaft 224 a of the drive device 224 is connected to the other end of the support shaft 216 ( It is directly connected to the right end in FIG. The gears 223 are engaged with each other on the adjacent support shafts 216 so that the adjacent paddle mixers 212 are driven to rotate in the opposite directions at substantially the same rotational speed. As a result, the mixing device 200 mixes the earth and sand introduced from the conveyor 13 via the inlet cylinder 202 by the paddle 214 and transfers them to the opposite side while making the improved soil. To be derived. A housing 225 encloses these gears 223 and the like, 226 scrapes the generated improved soil toward the outlet cylinder 203, and prevents the improved soil from being consolidated to the inner wall of the mixing apparatus main body 201 on the outlet cylinder 203 side. It is a scraping blade.
[0056]
22 is a side view showing the support structure of the mixing apparatus 200 having the above configuration, FIG. 23 is a sectional view taken along the line XXIII-XXIII in FIG. 22, and FIG. 24 is a top view of FIG.
22 to 24, 201 </ b> B is a lower cover body of the mixing apparatus main body 201, and the lower cover body 201 </ b> B includes the lower side wall surface excluding the outlet cylinder 203 of the mixing apparatus main body 201, and the front side of the outlet cylinder 203. (Left side in FIG. 22) and the wall surface. That is, the upper and lower sides of the mixing device main body 201 have a structure that can be opened almost entirely as a maintenance opening 201a and a soil discharge opening 201b (both see FIG. 23). Further, as shown in FIG. 23, the inner wall of the lower lid 201B is formed in an arc shape so as to follow the rotation locus of the paddle 214.
[0057]
227A and 227B are attachment portions of the mixing device main body 201, the attachment portion 227A is on the upper side of one side in the longitudinal direction (left side in FIG. 22) of the mixing device main body 201, and the attachment portion 227B is the other in the longitudinal direction of the mixing device main body 201. Projections are provided on the lower side surfaces (right side in FIG. 22). Reference numerals 228A and 228B denote connecting members for fixing the mixing apparatus main body 201 on the main body frame 3 (the connecting member 228A is not shown in FIG. 22 for the purpose of preventing confusion). Bolts are fastened to the part 227A and the upper part of the main body frame 3, and to the attachment part 227B and the upper part of the main body frame 3. With such a support structure, as shown in FIG. 23, the mixing device body 201 having a width smaller than the dimension between the body frames 3 and 3 is provided so as to be spanned between the body frames 3 and 3. In particular, as shown in FIG. 23, the connecting member 228A is formed in a substantially “<” shape so as to straddle a guide member 231 and a hydraulic cylinder 234 described later.
[0058]
229A and 229B are mounting plates that are bolt-fastened (welded) on both sides in the width direction (left and right direction in FIG. 23) at both ends in the longitudinal direction (left and right direction in FIG. 22) of the lower lid 201B. These wheels are rotatably supported by these side plates 229A and 229B. However, the wheel 230A is positioned slightly lower than the wheel 230B. A guide member 231 guides the wheels 230A and 230B. The guide member 231 is located above the wheels 230A and 230B via a slight gap and a lower guide 231A on which the wheels 230A and 230B travel. The guide 231B includes a lower guide 231A and a plurality of connection plates 231C that connect the upper guide 231B. Reference numeral 232 denotes mounting portions provided on the connecting plate 231C located at both ends and substantially in the center of the guide member 231, 233 denotes a plurality of mounting seats (see FIG. 23) provided on the upper part of the main body frame 3, and the mounting portion 232 corresponds to the mounting seat 233. On the other hand, it is bolted.
[0059]
Further, the guide member 231 includes a horizontal portion 231a extending in the longitudinal direction of the mixing apparatus main body 201 (left and right direction in FIG. 22), and an inclined portion that descends toward one side in the longitudinal direction of the mixing apparatus main body 201 (left side in FIG. 22). 231b are alternately arranged and configured in a staircase shape.
[0060]
234 is a hydraulic cylinder, 235 is a support member located above the mounting portion 227B, and both ends of the hydraulic cylinder 234 are rotatably connected to the side plate 229A and the support member 235 via pins 236 and 236. Has been. With such a structure, the mixing device main body 201 and its lower lid 201 </ b> B are independently supported from the main body frame 3 and are connected to each other by the hydraulic cylinder 234. Thus, when the hydraulic cylinder 234 is extended, the lower lid 201B sequentially travels on the inclined portion 231b and the horizontal portion 231a of the lower guide 231A of the guide member 231 and maintains a substantially horizontal state, while the arrow C in FIG. As shown in Fig. 5, the slide is performed by one step down, and finally the lower part of the mixing apparatus main body 201 is fully opened. This state is shown in FIG. In FIG. 25, it is needless to say that the lower lid 231B slides as shown by the arrow C by contracting the hydraulic cylinder 234 and returns to the state shown in FIG.
[0061]
Further, the mixing device 200 having the above structure uses, for example, a chain block (not shown) or the like, and suspends and holds the mixing device 200 from, for example, the support frame 11 positioned above, while connecting the connecting members 228A, 228B, the guide member 231 and its attaching portion 232 are removed, and the chain block is gradually loosened, so that it can be suspended between the main body frames 3 and 3. However, at this time, it is preferable to fix the lower lid 201B to the mixing apparatus main body 201 by some method such as clamping.
[0062]
Returning to FIGS. 1 to 3 again, 107 is a carry-out conveyor for discharging the improved soil and the like derived from the mixing apparatus 200 to the outside of the machine. The carry-out conveyor 107 is mixed in the conveying direction (right side in FIG. 1). After extending substantially horizontally from the lower side of the apparatus 200 for a predetermined distance, it extends upward from the vicinity of the lower side of the driving device 224 of the mixing apparatus 200. 108 is a conveyor frame of the carry-out conveyor 107, 109 and 110 are driving wheels and driven wheels provided at both ends of the conveyor frame 108 (refer to FIG. 27 to be described later), 111 is the driving wheel 109 and driven wheels. A conveyor belt 112 wound around 110 is a plurality of support rollers that support the conveyor surface of the conveyor belt 111. Reference numeral 113 denotes a drive device (see FIG. 2) directly connected to the drive wheels 109. The drive device 113 rotates the drive wheels 109 to drive the conveyor belt 111 in a circulating manner. Reference numeral 114 denotes side covers provided on both sides of the conveyor frame 108 in the width direction (vertical direction in FIG. 2), and prevents the improved soil being conveyed from being scattered by wind or the like.
[0063]
FIGS. 26 and 27 are views showing the mounting structure of the carry-out conveyor 107, and are partially enlarged views seen from the upper surface and the side surface, respectively.
26 and 27, reference numeral 115 denotes a guide member having a substantially “C” cross section for supporting the carry-out conveyor 107. The guide member 115 is substantially horizontal to the inside of the track frame 4 of the traveling device 2. It is extended to. Reference numeral 116 denotes a support member fixed to the inside of the track frame 4, 117 denotes a mounting plate fastened with bolts to the inside of the support member 116, and the guide member 115 is fixed to the inside of the mounting plate 117. Reference numeral 118 denotes a sliding member fixed to a side portion of the portion extending substantially horizontally on the side surface of the conveyor frame 108. The sliding member 118 is slidably supported by the guide member 115. That is, the carry-out conveyor 107 is supported on the inner side of the track frame 4 through the guide member 115 and the sliding member 118 so as to be slidable in a substantially horizontal direction (left and right direction in FIG. 27). The guide member 115 and the sliding member 118 are preferably made of a material having wear resistance and lubricity.
[0064]
Reference numeral 119 denotes a stopper pin. The stopper pin 119 is inserted into a pin insertion hole (not shown) formed in each of the longitudinal ends of the guide member 115 and the sliding member 118 (left end in FIG. 27). Thus, the unloading conveyor 107 is fixed and positioned. Reference numeral 117 ′ denotes an auxiliary mounting member for separately connecting an auxiliary guide member 115 ′ (see FIG. 32 described later) to the other longitudinal side of the guide member 115 (right side in FIG. 27).
[0065]
1 to 3 again, 120 is a support member provided near the center of the longitudinal direction (left and right direction in FIG. 1) of the conveyor frame 108, and this support member 120 is detachably fixed to a power unit 125 (described later). Has been. 121 is a bracket provided on the other longitudinal side of the conveyor frame 108 (right side in FIG. 1), 122 is a support arm protruding from the rear side (right side in FIG. 1) side of the power unit 125, and 123 is the bracket 121. And a turnbuckle connecting the support arm 122. As described above, in the carry-out conveyor 107, the substantially horizontally extending portion on one side in the longitudinal direction (left side in FIG. 1) is in the track frame 4 as described above, near the center in the longitudinal direction and on the other side in the longitudinal direction (FIG. 1). The middle (right) inclined portion is supported from the power unit 125.
[0066]
125 is a power unit, and this power unit 125 is supported on the other end in the longitudinal direction of the main body frame 3 (right side in FIG. 1) via a support member 126. Although not specifically shown for preventing congestion, the power unit 125 includes at least one hydraulic pump that discharges the pressure oil supplied to the drive devices of the above-described devices, an engine that drives the hydraulic pump, and hydraulic pressure. A plurality of control valves and the like for controlling the flow of pressure oil supplied from the pump to each driving device are provided inside.
[0067]
Reference numeral 127 denotes a driver's seat provided in a compartment on the front side (left side in FIG. 1) of the power unit 125. The driver's seat 127 includes a pair of operation levers 128 for operating the traveling device 2 and other devices. An operation panel 129 (see FIG. 2) for operation is provided. A warning light 130 is provided on the soil improvement material supply device 36. Reference numeral 131 denotes a manual operation panel. The manual operation panel 131 is electrically connected to a control device 148 (see FIG. 31 described later) provided in the power unit 125 via a cord, It is hung from 13 conveyor frames 14 and is provided at a position where the mixing device 200 is easy to see, such as near the end of one side of the main body frame 3 in the longitudinal direction (left side in FIG. 1). The manual operation panel 131 may be a wired operation type via a cord as described above, or may be a wireless operation type. Further, the installation position of the manual operation panel 131 is not limited to the above position as long as the mixing device 200 is easy to see, and is further suspended. good.
[0068]
FIG. 28 is a schematic view showing an overview of the manual operation panel 131.
In FIG. 28, 132A and 132B are operation switches for opening and closing the lower lid body 201B of the mixing device 200. When the operation switch 132A is pressed, the hydraulic cylinder 234 expands to open the lower lid body 201B and the operation switch 132B. When is pressed, the hydraulic cylinder 234 is shortened so that the lower lid 201B is closed. 133A and 133B are both operation switches for driving the paddle mixer 212 of the mixing device 200. When the operation switch 133A is pressed, the drive device 224 is rotated in the forward direction, and the paddle mixer 212 moves the sand and soil quality improving material to the outlet cylinder 203 side. When the operation switch 133B is pushed, the driving device 224 is reversed and the paddle mixer 212 is rotated in the reverse direction. 134A and 134B are operation switches for starting and stopping the carry-out conveyor 107. When the operation switch 134A is pressed, the drive device 113 is driven to circulate and drive the conveyor belt 111. When the operation switch 134B is pressed, the drive device 113 is turned on. The conveying belt 111 is stopped by stopping.
[0069]
Further, in the present embodiment, when a foreign matter is caught in the mixing device 200, the lower lid 201B is opened and closed, and the control device 148 (see FIG. 31 described later) is programmed to remove the foreign matter. Has been.
[0070]
FIG. 29 is a flowchart showing an example of a control procedure for removing biting in the mixing device 200 by the control device 148.
As shown in FIG. 29, first, in step 501, the control device 148 determines that the load pressure P output from the load detecting means (not shown) provided in the drive device 224 is a preset threshold value P1. It is determined whether it is above. When the load pressure P is less than the threshold value P1, the control device 148 ends the procedure, and when the load pressure P is equal to or higher than the threshold value P1, the process proceeds to step 502. In step 502, the control device 148 stops the conveyor 13, the screw feeder 38, and the paddle mixer 212. In step 503, the paddle mixer 212 is rotated in the reverse direction and the normal direction to remove foreign matter.
[0071]
In step 504, it is determined whether or not the detected load P has returned to a value equal to or less than the threshold value P1. If the detected load P detected by the load detecting means is still equal to or greater than the threshold value P1, the control device 148 determines in step 503 that the bite has not been removed, and in steps 505 and 506, the warning lamp 130 (see FIG. 1). ) Is turned on, the operation is stopped, and the process proceeds to Step 507. When the detected load P returns to the threshold value P1 or less, the process proceeds to step 511 described later.
[0072]
In steps 507 and 508, the operation is once switched to manual operation, and the manual operation panel 131 is used to start the carry-out conveyor 107 and open the lower lid 201B of the mixing apparatus 200. At this time, the foreign matter caught in the mixing device 200 is discharged onto the carry-out conveyor 107 and conveyed along with the earth and sand and the soil quality improving material through the opened lower portion of the mixing device main body 201. If the foreign matter is not yet discharged in step 508, the operation switches 133B and 133A of the manual operation panel 131 are appropriately operated in step 509 to remove the foreign matter caught by rotating the paddle mixer 212 in the reverse and forward directions. . At this time, the upper lid 201A (see FIG. 17) may be removed to open the upper portion of the mixing apparatus main body 201 and scrape off the foreign matter bitten by using some tool. Thereafter, when the upper portion of the mixing apparatus main body 201 is opened, the upper lid body 201A is attached, and in step 510, the lower lid body 201B is closed using the manual operation panel 131. At this time, in this control procedure, the automatic operation is again switched here.
[0073]
In step 511, the paddle mixer 212, the transfer conveyor 13, and the screw feeder 38 are activated again. In step 512, the warning lamp 130 is turned off and the procedure ends.
[0074]
FIG. 30 is a flowchart showing another example of the control procedure for removing the biting in the mixing device 200 by the control device 148.
The procedure shown in FIG. 30 is a process in which the control device 148 automatically performs the biting and removing operation from start to finish. Steps 601 to 606 are the same as steps 501 to 506 in the procedure shown in FIG. In this example, when the process proceeds to step 606, the carry-out conveyor 107 is activated in the order of steps 607 to 609, the lower lid 201B of the mixing device 200 is opened, the internal sediment and the soil conditioner are discharged, and the paddle mixer 212 Reverse or forward.
[0075]
In step 610, if the load pressure P is still greater than or equal to the threshold value P1, the process returns to step 609 to reversely rotate the paddle mixer 212 again and forward, and if the load pressure P returns to the threshold value P1 or less, the process proceeds to step 611. Then, the lower lid 201B is closed. Thereafter, in step 612, the paddle mixer 212, the transfer conveyor 13, and the screw feeder 38 are activated again. In step 613, the warning lamp 130 is turned off, and the procedure ends.
[0076]
Note that the detection results of the load detection means (not shown) described above are used as the determination of the presence or absence of foreign matter in the mixing apparatus 200, such as steps 501 and 601 of each control procedure, but not limited to this, for example, the paddle mixer 212 A rotational speed detector may be provided in the driving device 224, and when the detection result falls below a predetermined threshold value, the process may proceed to steps 502 and 602, respectively. In each of the above procedures, steps 503 and 603 are not necessarily required and may be omitted. Furthermore, the manual operation panel 131 can be operated by canceling automatic operation of each device and switching to manual operation regardless of the control procedure of the control device 148.
[0077]
Here, in this Embodiment, according to the amount of earth and sand supplied by the said conveyance conveyor 13, the amount of supply of a soil improvement material is controlled by the mixing ratio control apparatus.
FIG. 31 shows a block diagram of the mixing ratio control device.
In FIG. 31, 157 is an earth and sand volume measuring device for measuring the volume of the earth and sand transported on the conveyor 13, and the earth and sand volume measuring device 157 includes the height detecting means 33 (see also FIG. 4) and the above. It is composed of the touched volume calculation circuit 35 and speed detection means 158 that detects the number of rotations of the drive device 19 of the conveyor 13 (see FIG. 1). The volume calculation circuit 35 calculates the driving speed (that is, earth and sand conveying speed) of the conveying belt 17 (see FIG. 1) in the conveying conveyor 13 from the detection result of the speed detecting means 158. Further, as described above, the volume calculation circuit 35 inputs the detection result of the height detection means 33, and based on the detected height of the pressure roller 31 (see FIG. 4). The height of the transport soil after pressurization is calculated. That is, since the conveyed earth and sand are cut out from the hopper 12 with the width of the earth and sand outlet 12B (see FIG. 4), the earth and sand volume measuring device 157 uses the volume calculation circuit 35 to calculate the height of the earth and sand and the conveyance. By multiplying by the speed, the earth and sand volume per unit time after pressurization is calculated.
[0078]
Reference numeral 148a denotes a soil quality improving material supply amount calculation circuit stored in the control device 148, which is supplied based on the rotational speed of the drive device 59 of the screw feeder 38 detected by the rotational speed detection means 63 (see also FIG. 11). The amount of soil improvement material is calculated. 148b is a mixing ratio setting circuit that takes in the mixing ratio of the earth and sand and the soil improvement material set and input on the operation panel 129 (see FIG. 2), and 148c is the volume calculation based on the input result of the mixing ratio setting circuit 148b. A soil quality improvement material requirement calculation circuit that calculates the required soil quality improvement material supply amount for the detection result of the transported sediment volume input from the circuit 35, and both are stored in the control device 148.
[0079]
Reference numeral 148d denotes a comparator for comparing the calculation results of the soil improvement material requirement calculation circuit 148c and the soil improvement material supply amount calculation circuit 148a. The comparator 148d determines whether the soil improvement material supply amount is excessive or insufficient each time based on the input requested amount, and the drive device 59 of the screw feeder 38 is adjusted so that the soil improvement material supply amount approximates the required amount. A control signal for controlling the number of revolutions is calculated and output, and is similarly stored in the control device 148.
[0080]
That is, in the present embodiment, the control device 148 controls the supply amount of the soil improvement material by the soil improvement material supply device 36 (strictly, the screw feeder 38) according to the detection (calculation) result of the sediment volume measuring device 157. It comes to control.
[0081]
Next, the operation of the self-propelled soil improvement machine of the present embodiment having the above configuration will be described.
For example, when the sand to be reformed 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 transport conveyor 13 below and transported. The soil quality improving material supply device 36 supplies the soil quality improving material in the storage tank 37 to the earth and sand transported by the transport conveyor 13 by a fixed amount by a screw feeder 38. And the earth and sand and the soil quality improving material introduced into the mixing device 200 by the transport conveyor 13 are uniformly stirred and mixed by the paddle mixer 212, and are led out on the carry-out conveyor 107 as improved soil. This improved soil is conveyed by the carry-out conveyor 107 and finally discharged out of the self-propelled soil improvement machine.
[0082]
Here, the effects obtained by the present embodiment will be sequentially described.
(1) Stable supply of earth and sand and improvement of improved soil quality
In the present embodiment, the sediment on the downstream side in the sediment transport direction by the transport conveyor 13 in the hopper 12 can be loosened by the revolving motion of the movable wall 12A, and the sediment is pressed against the movable wall 12A to be compacted and tightened strongly. It can be prevented that it hardens. Therefore, since the occurrence of a cross-linking phenomenon in the hopper 12 can be prevented, the earth and sand can be smoothly conveyed out of the hopper 12, and a stable amount of earth and sand can be secured.
[0083]
Moreover, the bulk density of the earth and sand cut out from the hopper 12 by the conveyor 13 is substantially constant by pressing the earth and sand on the conveyor 13 conveyed to the outside of the hopper 12 with a predetermined force by the pressure roller 31. can do. And by measuring the volume of the transported earth and sand having a substantially constant bulk density with the earth and sand volume measuring device 157, the amount of earth and sand supplied can be measured more accurately. Thereby, the supply amount of the earth and sand by the conveyance conveyor 13 can be measured with high precision irrespective of the property of the earth to be reformed and the input state to the hopper 12. Thereby, since the supply amount of the soil improvement material can be controlled according to the detection result of the reliable supply amount of the earth and sand, the mixing ratio of the soil and the soil improvement material can be controlled to a more preferable value. Quality improved soil can be generated.
[0084]
In the present embodiment, the height of the pressure roller 31 is detected. However, for example, the height of the arm 20A may be detected. In short, any configuration may be used as long as it detects the height of the portion that moves up and down following the unevenness of the earth and sand. Further, a configuration for directly detecting the height of the transport soil on the downstream side of the pressure roller 31 is also conceivable. Further, instead of directly detecting the height, for example, the inclination angle of the arm 20A may be detected and converted into the height. In addition, the pressure roller 31 is provided as a means for applying a predetermined pressure to the earth and sand. However, the present invention is not limited to this. For example, a plate-like member having a smooth bottom surface and a predetermined mass is provided, and the unevenness of the earth and sand is provided. The volume of the supplied earth and sand may be detected by applying a predetermined force to follow and detecting the height of the plate or the angle of the arm supporting the plate.
Further, when the rotational direction of the driving device 26 of the movable wall 12A is reversed and the lower end of the movable wall 12A makes a reciprocating motion while drawing a locus in the direction opposite to the arrow in FIG. 4, the earth and sand are removed from the hopper 12 by the lower end of the movable wall 12A. Therefore, depending on the property of the earth and sand, the earth and sand transportability to the outside of the hopper 12 can be further improved.
Needless to say, the movable wall 12 </ b> A can be used as a downstream side wall surface of the hopper 12 which is stopped and fixed without necessarily rotating. Accordingly, when the movable wall 12A does not need to be revolving due to the properties of the earth or sand, or when it is inconvenient to revolve, it can be used as a normal fixed hopper.
[0085]
(2) Expansion of specifications for controlling the amount of soil improvement material added
For example, consider a case where a so-called rotary feeder is provided instead of the screw feeder 38. The rotary feeder generally rotates a rotor having a plurality of partition walls projecting from a rotating shaft, and sequentially introduces a soil improvement material introduced between the rotor partition walls. In this rotary feeder, when increasing the derived amount of soil improvement material, the rotational speed of the rotor will be increased. With this increase in rotational speed, sufficient contact time between the rotor partition and the soil quality improvement material is secured. In some cases, the amount of the soil improvement material introduced between the rotor partition walls is reduced, and the amount of the soil improvement material derived in accordance with the rotational speed of the rotor may not be obtained. As a result, the control of the rate of addition of the soil improvement material to the earth and sand may be less accurate when supplying a large amount of the soil improvement material.
[0086]
On the other hand, in the present embodiment, the soil quality improving material is added to the earth and sand by the screw feeder 38. As described above, since the soil improvement material introduction port 51 of the screw feeder 38 is provided long with respect to the transfer direction of the soil improvement material, the contact time between the soil improvement material and the screw 56 can be sufficiently secured, A sufficient amount of the soil quality improving material introduced into the screw 56 is secured. Thereby, even if the rotational speed of the screw 56 increases, the range in which the soil improvement material suitable for the rotational speed of the screw 56 is derived is widened compared to the rotary feeder. Therefore, it is possible to accurately control the addition amount of the soil improvement material with wider specifications.
[0087]
(3) Height reduction
In the present embodiment, the screw feeder 38 is inclined upward in the transfer direction of the soil conditioner (left direction in FIG. 1), and the upstream side in the transfer direction (right side in FIG. 1) enters the lower space. It arrange | positions so that it may become low with respect to the transfer direction downstream side (left side in FIG. 1). Thereby, compared with the case where the screw feeder 38 is provided horizontally, the height of the soil improvement material supply apparatus 36 can be made low, and the total height of the self-propelled soil improvement machine can be reduced correspondingly.
[0088]
(4) Smooth introduction of soil conditioner to screw feeder
In the present embodiment, as described above, the pitch of the screw 56 of the screw feeder 38 is larger on the downstream side in the transfer direction (left side in FIG. 10) than on the upstream side in the transfer direction (right side in FIG. 10). . If the screws 56 have an equal pitch, if the soil 56 is filled with the soil improvement material on the upstream side in the transfer direction of the soil improvement material introduction port 51, the screw 56 on the downstream side in the transfer direction of the soil improvement material introduction port 51. There is a possibility that a so-called rat hole phenomenon may occur as a result of the introduction of the soil improvement material into the screw 56 intensively at the upstream portion in the transfer direction at the soil improvement material introduction port 51 without introducing the soil improvement material. is there. In this case, a phenomenon such as so-called funnel flow occurs in this portion, and the soil quality improving material in the storage tank 37 and the chute 39 may not be smoothly introduced into the screw feeder 38 in sequence.
[0089]
On the other hand, in the present embodiment, the pitch of the screw 56 is larger on the downstream side in the transfer direction than on the upstream side in the transfer direction, so even if the soil improvement material is filled on the upstream side in the transfer direction of the screw 56, along with the transfer, A space for receiving the soil improvement material is gradually created on the downstream side in the transfer direction of the screw 56, and the introduction of the soil improvement material from the soil improvement material inlet 51 to the screw feeder 38 can be in a so-called mass flow state. Therefore, smooth introduction of the soil improvement material into the screw feeder 38 can be realized.
[0090]
(5) Ease of chute production
In the present embodiment, the soil improvement material outlet 39B (see FIG. 8) of the chute 39 is formed in a substantially rectangular shape. In this case, if the storage tank 37 is substantially circular, the shape of the chute 39 connecting the substantially rectangular soil improvement material outlet 39B and the storage tank 37 becomes a complicated shape combining curved surfaces and flat surfaces, which is extremely manufactured. It will be difficult. Therefore, in the present embodiment, since the storage tank 37 has a substantially square shape, the chute 39 has a simple shape in which planes are appropriately combined, and the chute 39 can be easily manufactured.
[0091]
(6) Improved maintainability of screw feeder
In the present embodiment, as described above, the intermediate casing 50C of the screw feeder 38 having the soil improvement material introduction port 51 is rotatably provided. Thereby, for example, by rotating the intermediate casing 50C by about 180 °, the inflow of the soil conditioner from the upper storage tank 37 to the screw feeder 38 can be blocked. At this time, by removing the lower casing 70C (see FIG. 14) of the outer casing 70, the soil conditioner introduction port 51 of the screw feeder 38 moved to the lower side can be exposed. Therefore, in the unlikely event that compaction or biting occurs in the screw feeder 38, it can be dealt with from the exposed soil conditioner introduction port 51. In addition, if possible, the screw 56 is driven in the reverse direction, the soil conditioner in the screw feeder 38 is transferred in the opposite direction to the soil condition improvement work, and discharged from the exposed soil conditioner introduction port 51. it can. As described above, the burden of maintenance work on the screw feeder 38 can be reduced.
[0092]
(7) Productivity improvement
In recent years, the nature of the soil to be reformed by the self-propelled soil improvement machine has been diversified, and depending on the properties of the soil to be reformed, the wear of the paddle mixer in the mixing device may be accelerated. When the paddle mixer is worn out as a whole, it is necessary to replace the paddle mixer. Normally, in a self-propelled soil conditioner, the paddle mixer is supported by the main body of the mixing device. In this case, the mixing device itself is removed, the mixing device is disassembled, and the paddle mixer is taken out.
[0093]
When removing the mixing device in this way, it usually has to be taken out of the self-propelled soil conditioner from either the upper or lower direction, but even if the mixing device is removed from either the upper or lower direction, Each arranged device must be removed as appropriate, which requires a lot of labor and time and involves a very troublesome work. As a result, the operation stop time associated with this work becomes long, resulting in a decrease in productivity.
[0094]
In the present embodiment, as described above, the rotation shaft 213 of the paddle mixer 212 is detachably provided to the mixing apparatus body 201 via the support shafts 215 and 216 (see FIG. 18). Accordingly, the paddle mixer 212 can be taken out and assembled from the opened upper portion without removing the mixing apparatus 200 itself as described above with reference to FIG. Therefore, the paddle mixer 212 can be easily replaced and the maintainability of the mixing apparatus 200 can be improved. Therefore, the productivity can be improved by reducing the operation stop time associated therewith.
[0095]
In addition, this configuration is effective even when the padding mixer is replaced with a paddle mixer with a different mounting pitch state, such as when the object to be reformed is changed to soil having greatly different properties. Further, since the replacement work of the paddle mixer 212 can be easily performed, even the end user such as a rental company or a field worker can perform the replacement work of the paddle mixer 212 without calling a person having specialized knowledge such as a manufacturer's service person. There is a merit that it can be done.
[0096]
(8) Quick removal of biting in the mixing device
In the present embodiment, even if foreign matter is caught in the mixing apparatus 200, the lower lid 201B is slid in the longitudinal direction of the mixing apparatus main body 201, for example, as described above with reference to FIG. Then, the lower part of the mixing apparatus main body 201 of the mixing apparatus 200 is fully opened, so that the foreign matter caught in the mixing apparatus 200 can be discharged from the lower part of the mixing apparatus main body 201 together with the internal sand and soil quality improving material. it can. Moreover, even if the foreign matter that has been bitten is not discharged together with the earth and sand and the soil conditioner, the earth and sand and the soil conditioner that were around this foreign matter will be discharged, so the position of the foreign object can be easily identified visually. can do. Therefore, for example, as described above, the paddle mixer 212 can be driven in reverse, or the foreign substance can be easily removed by bumping off the upper part of the mixing apparatus main body 201 that has been opened by removing the upper lid 201A. . As described above, even if foreign matter is caught in the mixing apparatus 200, it can be easily removed, and stable productivity can be secured by quickly returning to the soil improvement work.
[0097]
Further, as described above, the biting and removing operation of the mixing apparatus 200 can be easily performed, so that the self-propelled soil conditioner of the present embodiment is used without calling a service person having specialized knowledge. There is also an advantage that end users such as rental companies and workers on site can cope with problems such as biting in the mixing apparatus 200.
[0098]
(9) Smooth opening and closing operation of the mixing device
If earth and sand, a soil conditioner, or the like is blocked in the mixing device 200, the soil and the soil conditioner are often consolidated in the mixing device 200. When consolidation occurs in this way, it is conceivable that the operating load increases due to the internal pressure received from the earth and sand or the soil quality improving material, and the lower lid 201B does not operate smoothly. Therefore, in the present embodiment, when the lower portion of the mixing apparatus main body 201 is opened and closed, the aforementioned inclined portion 231b guides the lower lid body 201B to a position lowered by one step from the closed state. Thereby, since the internal pressure of the earth and sand consolidated in the mixing apparatus 200 can be released, the operating load of the lower lid 201B can be reduced, and the opening / closing operation of the lower lid 201B can be facilitated.
[0099]
(10) Improved operability of the lower lid
In the present embodiment, the manual operation panel 131 is provided at a position where the mixing device 200 can be easily seen as described above. Therefore, as described with reference to FIG. Opening and closing of the lower lid 201B, normal rotation / reverse rotation of the paddle mixer 212, and start / stop of the carry-out conveyor 107 can be operated while visually grasping the situation, so that these lower lids 201B at the time of foreign matter removal, Good operability of the paddle mixer 212 and the carry-out conveyor 107 can be ensured.
[0100]
(11) Improved maintainability of mixing equipment
Here, when the mixing device has to be removed from the machine, such as when there is a problem with the mixing device, the normal self-propelled soil conditioner removes the mixing device from the main body frame and moves it up and down with a crane or the like. It will be transported in the direction and taken out of the self-propelled soil conditioner. When lifting the mixing device upward, in order to secure a space above, it is necessary to remove the conveyor, the soil conditioner supply device, the hopper, etc. in advance using a crane or the like. It takes time. On the other hand, when the mixing device is suspended downward, it is possible to secure a space below by removing only the carry-out conveyor. However, this carry-out conveyor is generally configured to be relatively long, and its gravity center position is the power. In many cases, it is located below the apparatus, and in order to remove the carry-out conveyor, the hanging position is appropriately changed, and it is accompanied by a very troublesome work of gradually pulling out while maintaining balance.
[0101]
FIG. 32 shows an example of the removal work of the mixing apparatus 200 in one embodiment of the self-propelled soil improvement machine of the present invention.
First, in the state of FIG. 32, the carry-out conveyor 107 is moved to the right side in FIG. 32, and a space is created below the mixing device 200. That is, in this state, for example, using a chain block (not shown) or the like, the above-mentioned connecting members 228A and 228B shown in FIG. By removing the guide member 231 and the like and gradually loosening the chain block, the mixing device 200 can be suspended on the ground between the left and right traveling devices 2 and 2 through the body frames 3 and 3. However, at this time, it is preferable to fix the lower lid 201B to the mixing apparatus main body 201 by some method such as clamping.
[0102]
In FIG. 32, 115 ′ is an auxiliary rail joined to the guide member 115, and the opposite end portion of the auxiliary guide member 115 ′ to the guide member 115 is supported by the auxiliary mounting portion 117 ′. The power device 125 is supported by suspension through a support member 159.
[0103]
32, the stopper pin 119 (see FIG. 27) is first removed, the support member 120 of the carry-out conveyor 107 is removed from the power unit 125, and the auxiliary guide member 115 ′ is attached. The removed support member 120 is suspended and supported by the crane 76. Then, the turnbuckle 123 (see FIG. 1) is removed, the crane 76 is slid onto the guide member 115 and the auxiliary guide member 115 ′, and the carry-out conveyor 107 is slid, so that the state shown in FIG. .
[0104]
In FIG. 32, the crane 76 provided with the carry-out conveyor 107 is suspended, but it goes without saying that a separately prepared device such as a hoist or an overhead crane may be used.
[0105]
In the present embodiment, since the carry-out conveyor 107 is supported so as to be slidable substantially parallel to the main body frame 3, by sliding the carry-out conveyor 107 to the state shown in FIG. Even if it is not completely removed, the necessary space below the mixing device 200 can be created. Thereby, the removal operation | work of the mixing apparatus 200 becomes easy and it can improve a maintenance property by the part.
[0106]
(12) Easy integration of carry-out conveyor
FIG. 33 shows an example of the work of incorporating the carry-out conveyor in one embodiment of the self-propelled soil improvement machine of the present invention.
As shown in FIG. 33, when incorporating the carry-out conveyor 107 in the self-propelled soil improvement machine of the present embodiment, first, the carry-out conveyor 107 is suspended and attached to the carry-out conveyor 107 by a hoist or an overhead crane, for example. Further, the sliding member 118 is conveyed so that one end (the left end in FIG. 33) is hooked on the guide member 115. Then, the guide member 115 is slid as it is, and the carry-out conveyor 107 is slid to the left in FIG.
[0107]
At this time, since the load on one side in the longitudinal direction of the carry-out conveyor 107 (left side in FIG. 33) is supported by the guide member 115, it is slid until the center of gravity of the carry-out conveyor 107 is located near the lower part of the power unit 125. Then, while leaving one end (left end in FIG. 33) of the carry-out conveyor 107 in the guide member 115, the suspension fulcrum is gradually moved to the other side (right in FIG. 33) of the carry-out conveyor 107 in this state. Thereafter, the carry-out conveyor 107 is further slid to the left in FIG. 33. When the predetermined position is reached, the carry-out conveyor 107 is fixed using the stopper pin 119 (see FIG. 27). Finally, the support member 120 and the turnbuckle 123 (see FIG. 1) are attached, and the assembling operation is completed.
[0108]
Normally, when removing the carry-out conveyor in exchange, maintenance, etc. of the carry-out conveyor, the center of gravity is usually under the power unit as described above, so remove the carry-out conveyor while changing the hanging position many times, Also, the installation work is very troublesome. In the present embodiment, as described above, the loading / unloading work of the carry-out conveyor 107 can be efficiently performed in order, and the loading / unloading property of the carry-out conveyor 107 is improved.
[0109]
(13) Captain shortening
Since the self-propelled soil improvement machine is usually transported by a transportation means such as a trailer, the height dimension and the length of the machine must be compactly configured so as to satisfy transportation restrictions.
In the present embodiment, since the carry-out conveyor 107 is configured to slide in the longitudinal direction, the carry-out conveyor 107 can be pushed into the machine side as shown in FIG. Remove the stopper pin 119 (see FIG. 27), support member 120, turnbuckle 123 (see FIG. 1), slide the carry-out conveyor 107 to the left in FIG. can do. At this time, in order to fix the carry-out conveyor 107, it is preferable to connect the bracket 121 and the support arm 122 with a short turnbuckle 123 'prepared in advance.
[0110]
That is, in this case, the carry-out conveyor 107 is pushed into the machine side by a dimension l from the normal time, and the length of the self-propelled soil improvement machine at this time is shorter than the normal dimension L by the dimension l. . Thereby, at the time of transportation, etc., the self-propelled soil improvement machine can be made more compact, and the transportability can be improved.
On the contrary, when the tip of the carry-out conveyor 107 is extended so that the transport limit is slightly cleared during transportation (in the state shown in FIG. 34), the discharge end (right end in FIG. 34) of the carry-out conveyor 107 is increased. There is also an advantage that the height can be made higher than the state shown in FIG.
[0111]
Here, in the present embodiment, in order to obtain the above effects (11) to (13), the carry-out conveyor 107 is configured to be slidable, but as long as the essential effect (1) of the present invention is obtained, These configurations are not necessarily required, and the carry-out conveyor 107 may be fixed. In order to obtain the effect (10), the manual operation panel 131 is attached at a position where the mixing device 200 is easy to see, but this configuration is not necessarily required as long as the effect (1) is obtained. Further, in order to obtain the above effect (9), the lower lid 201B is slid downward. However, this is not always necessary to obtain the essential effect (1) of the present invention. It may be configured to slide horizontally. Further, in order to obtain the above effect (8), the lower lid 201B is configured to be slidable. However, this is not necessarily a configuration necessary for obtaining the essential effect (1) of the present invention. The lid 201B may be configured to be detachable with a bolt. Further, in order to obtain the above effect (7), the paddle mixer 212 is detachable. However, the paddle mixer 212 may not be detachable essentially in the present invention.
[0112]
Further, in order to obtain the effect (6), the intermediate casing 50C of the screw feeder 38 is configured to be rotatable, but this is not necessarily required as long as the essential effect (1) of the present invention is limited. Moreover, in order to acquire the said effect (5), although the storage tank 37 was formed in the substantially square shape, it is not restricted to this, For example, you may make a cross section into a substantially circular shape. Moreover, in order to acquire the said effect (4), although comprised so that the pitch of the screw 56 might become large toward downstream, this is not necessarily required in order to acquire the essential effect (1) of this invention, for example, An equal pitch may be used. In order to obtain the effect (3), the screw feeder 38 is disposed at an inclination. However, as long as the essential effect (1) of the present invention is obtained, for example, the screw feeder 38 may be provided substantially horizontally. .
[0113]
Next, a modification of the present embodiment will be described.
FIG. 35 is a cross-sectional view schematically showing the structure of a hopper provided in a modification of the self-propelled soil improvement machine according to the embodiment described above, and corresponds to FIG. However, the same reference numerals are given to the same parts as those in the previous drawings, and the description will be omitted.
In FIG. 35, reference numeral 160 denotes a plurality of rod-shaped members provided at the end of the movable wall 12A facing the conveyor 13 (strictly, the conveyor belt 17). These rod-shaped members 160 are each conveyed to the lower end of the movable wall 12A. A predetermined gap is secured between the belt 17 and the belt 17 so that the lower end of the rod-shaped member 160 does not interfere with the conveying belt 17 when the movable wall 12A vibrates, and the belt 17 is fixed vertically. They are arranged in a comb-like shape at predetermined intervals in the middle and left and right directions. In the present modification, the configuration is the same as that of the above-described embodiment except that the rod-shaped member 160 is provided.
[0114]
In this modified example, the same effect is obtained, and the rod-shaped member 160 rotates and swings integrally with the movable wall 12A. Therefore, the rod-shaped member 160 is transported through the earth and sand near the earth and sand outlet 12B or the earth and sand outlet 12B. Since the soil can be loosened like plowing, the compaction of the soil can be more effectively prevented. Further, when a large foreign matter or the like is mixed in the soil to be reformed, the foreign matter is dammed by the rod-shaped member 160 and prevented from being carried out of the hopper 12, for example, the mixing device 200 described above. This foreign matter is introduced to the inside, and it is possible to prevent in advance problems such as biting inside. Furthermore, since the mixing of foreign matter into the mixing apparatus 200 can be prevented in advance, the improved soil to be produced can be of high quality with little foreign matter.
[0115]
In this modification, the shape of the rod-shaped member 160 may be changed according to the properties of the earth and sand, for example, an arc shape. Also, the cross section may be changed to a shape suitable for the properties of the earth and sand, such as a square, a circle, an elliptical system, a streamline, and the like. In short, any shape that cultivates earth and sand without hindering conveyance may be used. In addition, the rod-shaped member 160 has been described as being fixed to the movable wall 12A. However, the present invention is not limited to this, and the rod-shaped member 160 may be configured to be detachable from the movable wall 12A. However, for example, the shapes may be connected to each other. Thus, when the rod-shaped member 160 is integrally formed and can be attached to and detached from the movable wall 12A, the replacement work when replacing with another shape according to the property of earth or sand or when replacing due to wear Sexuality is improved.
[0116]
Moreover, the structure demonstrated above is applicable also to the self-propelled soil improvement machine equipped with the soil improvement material supply apparatus provided with the so-called rotary feeder, for example, the self-propelled soil improvement machine provided with the sieve apparatus. A self-propelled soil improvement machine having such a configuration will be described below.
[0117]
FIG. 36 is a side view showing the overall structure of a self-propelled soil conditioner equipped with a sieve device and a soil conditioner supply device equipped with a rotary feeder, and FIG. 37 is a top view thereof. However, in these FIG. 36 and FIG. 37, the part which fulfill | performs the same function as each previous figure attaches | subjects the same code | symbol.
The main structural differences between the self-propelled soil improvement machine shown in FIGS. 36 and 37 and the self-propelled soil improvement machine shown in FIGS. 1 to 3 are as described above. 12 is provided with a sieving device 161 for selecting input soil according to the particle size, and a so-called rotary feeder 162 as a soil improvement material supply means of the soil improvement material supply device 36. Since the other structure is substantially the same as the self-propelled soil improvement machine shown in FIGS. 1 to 3, the subsequent description is omitted.
[0118]
36 and 37, 163 is a frame body as a main body of the sieving device 161 having an open top and bottom, 164 is a spring that supports the frame body 163 on the support frame 10 so as to be able to vibrate, and 165 is inside the frame body 163. With the mounted grid (see FIG. 37), the grid 165 is inclined so that the left side in FIG. 36 is lowered. Reference numeral 166 denotes an eccentric drum. The eccentric drum 166 is provided at both ends of a rotating shaft (not shown) inserted through the frame body 163, and the center of gravity is separated from the center of rotation by a predetermined distance. Reference numeral 167 denotes a driving device of the sieve device 161 (see FIG. 37), and 168 denotes a belt that transmits the driving force of the driving device 167 to the eccentric drum 166.
[0119]
That is, the sieve device 161 is configured to vibrate the entire device on the support frame 10 by rotating the eccentric drum 166. As a result, the lump or foreign matter having a particle size larger than the size of the grid 165 is removed from the charged earth and sand and discharged to the outside of the machine (in this case, the left side in FIG. 36). Are selected and introduced into the hopper 12 as the soil to be modified.
[0120]
Although not shown in detail in order to prevent congestion, the rotary feeder 162 incorporates a rotationally driven rotor having a plurality of partition walls projecting radially on a rotating shaft, and the rotor is moved from the storage tank 37 positioned above. The soil quality improving material received in the space between the partition walls is sequentially added to the soil on the conveyor 13 located below.
[0121]
Similarly, although not particularly illustrated, this self-propelled soil improvement machine is provided with a stirring means for cutting out the soil improvement material to the rotary feeder 162 in the vicinity of the bottom in the storage tank 37, and the rotary feeder of the soil improvement material is provided. Consideration is given to the smooth supply to 162.
[0122]
The above-described embodiment and modification of the present invention can be applied to the self-propelled soil improvement machine as shown in FIGS. 36 and 37, and the same effect can be obtained. it can.
[0123]
The self-propelled soil improvement machine shown in FIGS. 36 and 37 uses a sieve device 161 constituted by a so-called vibrating sieve. The above-described embodiment and modification of the present invention can also be applied to a traveling soil improvement machine. Moreover, it is needless to say that the above configuration can be applied to a device provided with a so-called twist above the sieving device 161 as a consideration for the ability to put earth and sand into the sieving device 161. In these cases, the same effect is obtained.
[0124]
Here, the self-propelled soil conditioner of FIGS. 1 to 3 and the self-propelled soil conditioner of any of the self-propelled soil conditioners of FIGS. 36 and 37 receive the soil and mix with the soil conditioner. Thus, the basic structure of generating improved soil is the same, and it has versatility for various soil improvement operations such as the above-described soil improvement and surface layer stabilization treatment.
[0125]
However, with the self-propelled soil improvement machine shown in FIGS. 36 and 37, the screen device 161 removes large foreign matters, large lumps, etc. contained in the soil to be modified in advance, so that the amount of foreign matter mixed in is small. There is an advantage that improved soil can be produced. Therefore, for example, the construction-generated soil generated at a construction site or the like is mixed with the soil quality improving material at the site to produce an improved soil product for recycling.
[0126]
On the other hand, generally, when a large amount of soil improvement material is supplied, the screw feeder can adjust the supply amount of the soil improvement material with higher accuracy than the rotary feeder. Therefore, the self-propelled soil conditioner equipped with the soil conditioner supply device that supplies the soil conditioner with the screw feeder has an advantage that it can cope with the soil to be modified with various properties. That is, the self-propelled soil improvement machine shown in FIGS. 1 to 3 that supplies the soil improvement material by the screw feeder 38 is more compatible with the soil having a variety of properties than the self-propelled soil improvement machine shown in FIGS. There is an advantage that you can.
[0127]
In particular, the self-propelled soil improvement machine shown in FIGS. 1 to 3 is preliminarily sieved so as to be able to cope with earth and sand containing large blocks, stones, etc., and earth and sand having high viscosity, which are difficult to pass through the lattice. The device is omitted. Therefore, for example, the soil that excavated the surface layer of the residential land construction site, etc. is reformed on the spot, and improved soil is backfilled to the surface layer to strengthen the ground, or a predetermined site in the site is created on the road construction site, etc. In particular, surface soil stabilization treatment, such as modifying the soil obtained by excavation and generating improved soil to be laid as a roadbed material, can exhibit its performance.
[0128]
In the above description, the height detection unit 33 is configured by an ultrasonic sensor. However, the height detection unit 33 is not limited thereto, and an optical or contact displacement sensor, an angle sensor, or the like may be used. In short, it is sufficient to use a sensor that can detect the height of earth and sand as appropriate. Moreover, although the said pressure roller 31 was set as the structure rotated according to a conveyance earth-and-sand surface, it is good also as a structure driven to rotate by oneself. In these cases, the same effect is obtained. Further, a plurality of height detection means 33 may be provided, and an average value of the respective detection results may be calculated by the earth and sand volume measuring device 157 (strictly, the volume calculation circuit 35). In this case, in addition to the same effect, the measurement accuracy of the earth and sand volume can be further improved.
[0129]
In the above description, the self-propelled soil improvement machine including the so-called crawler-type traveling device 2 having the crawler belt 7 has been described as an example. However, the present invention is not limited to this. For example, the self-propelled soil having a so-called wheel-type traveling body is provided. It may be an improved machine. Further, the self-propelled soil improvement machine equipped with the so-called mixing type mixing device 200 provided with the paddle mixer 212 has been described as an example. However, for example, a mixing device provided with a screw mixer instead of the paddle mixer 212, or a rotational impact rotating at high speed The above-described embodiment and modification of the present invention can also be applied to a self-propelled soil improvement machine equipped with a so-called crushing type mixing device that crushes and mixes earth and sand and a soil improvement material using a child or the like. . In these cases, the same effect is obtained.
[0130]
【The invention's effect】
In the present invention, since the downstream side wall surface of the transport conveyor in the hopper in the direction of sediment transport is a movable wall, the motion of the movable wall can loosen the soil pressed against the movable wall. Thereby, it is possible to prevent the earth and sand from being compacted and strongly consolidated in the hopper, and to prevent the occurrence of a bridging phenomenon in the hopper. Moreover, the bulk density of the earth and sand cut out from the hopper can be made substantially constant by providing a pressurizing means above the conveyor and pressurizing the earth and sand on the conveyor to be transported outside the hopper. Then, by measuring the volume of the transported earth and sand having a substantially constant bulk density in this way by the earth and sand volume measuring means, the amount of earth and sand supplied can be measured more accurately. This makes it possible to accurately measure the amount of earth and sand supplied from the conveyor, regardless of the properties of the soil to be modified and the state in which it is put into the hopper. Can be controlled. Therefore, high quality is achieved by smoothly transporting the earth and sand in the hopper to ensure a stable earth and sand supply amount, and more accurately measuring the amount of earth and sand supplied and controlling the mixing ratio with the soil improvement material. The improved soil can be generated.
[Brief description of the 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 front view showing the overall structure of an embodiment of the self-propelled soil improvement machine of the present invention as seen from the left side in FIG.
FIG. 4 is a side sectional view schematically showing the structure of a hopper provided in an embodiment of a self-propelled soil improvement machine of the present invention.
FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4 schematically showing the structure of a hopper provided in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 6 is a side view showing a detailed structure of a soil improvement material supply device provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 7 is a top view showing a detailed structure of a soil improvement material supply device provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 8 is a horizontal sectional view taken along the line VIII-VIII in FIG. 6 showing the detailed structure of the soil improvement material supply device provided in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 9 is a side view showing a reduced state of the soil improvement material supply device provided in the embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 10 is a side view showing a detailed structure of a screw feeder provided in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 11 is a top view showing a detailed structure of a screw feeder provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 12 is a partially enlarged view showing a connection structure between an end casing and an intermediate casing of a screw feeder provided in an embodiment of the self-propelled soil improvement machine of the present invention.
13 is a cross-sectional view taken along section XIII-XIII in FIG.
FIG. 14 is a side view showing a support structure of a screw feeder provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 15 is a partially enlarged view seen from the direction of arrow XV in FIG.
16 is a partially enlarged view as seen from the direction of arrow XVI in FIG. 14;
FIG. 17 is a top view showing a detailed structure of a mixing device provided in an embodiment of the self-propelled soil improvement machine of the present invention.
18 is a side cross-sectional view taken along the XVIII-XVIII cross section in FIG. 17 showing the detailed structure of the mixing device provided in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 19 is a view showing a mounting structure of the upper lid body of the mixing device provided in the embodiment of the self-propelled soil improvement machine of the present invention to the mixing device body, and is an enlarged view of the XIXa portion in FIG. 17; It is sectional drawing by the XIXb-XIXb cross section in this figure.
FIG. 20 is a view showing a mounting state of the paddle mixer and the support shaft provided in the embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 21 is a side cross-sectional view of a mixing apparatus showing a state of a process of removing a paddle mixer provided in an embodiment of a self-propelled soil improvement machine of the present invention.
FIG. 22 is a side view showing the support structure of the mixing device provided in the embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 23 is a cross-sectional view taken along the line XXIII-XXIII in FIG. 22 showing the support structure of the mixing device provided in the embodiment of the self-propelled soil improvement machine of the present invention.
24 is a top view of FIG. 22 showing the support structure of the mixing device provided in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 25 is a side view of the mixing device showing a state where the lower portion of the mixing device main body provided in the embodiment of the self-propelled soil improvement machine of the present invention is fully opened.
FIG. 26 is a partially enlarged view showing the mounting structure of the carry-out conveyor provided in the embodiment of the self-propelled soil improvement machine of the present invention as viewed from above.
FIG. 27 is a partially enlarged view showing the mounting structure of the carry-out conveyor provided in the embodiment of the self-propelled soil improvement machine of the present invention as seen from the side.
FIG. 28 is a schematic diagram showing an overview of a manual operation panel provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 29 is a flowchart showing an example of a control procedure for removing biting in the mixing device by the control device provided in the embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 30 is a flowchart showing another example of the control procedure for removing biting in the mixing device by the control device provided in the embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 31 is a block diagram of a mixing ratio control device provided in an embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 32 is an overall side view showing an example of the removal work of the mixing device in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 33 is an overall side view showing an example of the work of incorporating the carry-out conveyor in one embodiment of the self-propelled soil improvement machine of the present invention.
FIG. 34 is an overall side view showing a state in which the length of the self-propelled soil improvement machine according to an embodiment of the present invention is shortened.
FIG. 35 is a cross-sectional view schematically showing the structure of a hopper provided in a modification of the embodiment of the self-propelled soil improvement machine of the present invention, corresponding to FIG.
FIG. 36 is a side view showing the entire structure of a self-propelled soil conditioner to which the present invention can be applied, which is equipped with a sieve device and a soil conditioner supply device equipped with a rotary feeder. is there.
FIG. 37 is a top view showing the entire structure of a self-propelled soil conditioner to which the present invention is applicable, and is equipped with a soil conditioner supply device equipped with a sieve device and a rotary feeder. is there.
[Explanation of symbols]
1 Traveling body (traveling means)
3 Body frame
12 Hoppers
12A movable wall
13 Conveyor
31 Pressure roller (Pressure means)
33 Height detection means
36 Soil improvement material supply device
38 Screw feeder
107 Unloading conveyor
148 Control device (control means)
157 Sediment volume measuring device (sediment volume measuring means)
200 Mixer

Claims (3)

In the self-propelled soil improvement machine that mixes and reforms the received earth and sand with soil improvement materials
A body frame provided with traveling means;
A mixing device provided on the main body frame for mixing the earth and sand and the soil quality improving material;
A transport conveyor for supplying the earth and sand to the mixing device;
A hopper for receiving earth and sand provided at an upper position of the conveyor;
A movable wall that constitutes the downstream side wall surface of the conveyor of the hopper, and that supports the upper end of the main body frame via an arm so that the lower end moves in a circular motion;
A driving device coupled to the movable wall;
A soil improvement material supply device provided in the main body frame to supply a soil quality improvement material to the earth and sand;
A pressurizing unit provided at a downstream position on the conveyor so as to be movable up and down, contacting the upper surface of the earth and sand cut out from the hopper and conveyed by the conveyor, and pressurizing the earth and sand with a force of its own weight;
Earth and sand volume measuring means for measuring the volume of earth and sand pressed by this pressure means,
A self-propelled soil conditioner provided with an unloading conveyor for unloading the improved soil mixed by the mixing device. In the self-propelled soil improvement machine that mixes and reforms the received earth and sand with soil improvement materials
A body frame provided with traveling means;
A mixing device provided on the main body frame for mixing the earth and sand and the soil quality improving material;
A transport conveyor for supplying the earth and sand to the mixing device;
A hopper for receiving earth and sand provided at an upper position of the conveyor;
A movable wall that constitutes the downstream side wall surface of the conveyor of the hopper, and that supports the upper end of the main body frame via an arm so that the lower end moves in a circular motion;
A driving device coupled to the movable wall;
Soil improvement comprising a storage tank provided in the main body frame so as to supply soil improvement material to the earth and sand, and a screw feeder provided at a lower portion of the storage tank and having a screw whose pitch increases toward the outlet side. A material supply device;
A pressurizing unit provided at a downstream position on the conveyor so as to be movable up and down, contacting the upper surface of the earth and sand cut out from the hopper and conveyed by the conveyor, and pressurizing the earth and sand with a force of its own weight;
Earth and sand volume measuring means for measuring the volume of earth and sand pressed by this pressure means,
A self-propelled soil conditioner provided with an unloading conveyor for unloading the improved soil mixed by the mixing device.   The self-propelled soil improvement machine according to claim 1 or 2, further comprising a control means for controlling a supply amount of the soil improvement material in the soil improvement material supply device based on a detection value of the soil volume measurement means. Features a self-propelled soil improvement machine.

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