JP2008285826A - Method of improving surface layer of ground and spray device for soil improvement material used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of improving the surface layer of a ground capable of eliminating the production of an industrial waste by used bags by reducing cost by using a soil improvement material in bulk. <P>SOLUTION: The soil improvement material A in bulk is contained in a spray bucket 2. The spray bucket 2 is attached to the arm 16 of a back hoe 15. The soil improvement material A contained in the spray bucket is sprayed through a discharge hole on the lower side by longitudinally changing the lifting angle of the spray bucket 2. Then, the soil improvement material A and a soil are agitated with each other, and compacted as necessary. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a ground surface improvement method for forming a supporting ground for the foundation of a low-rise structure, securing strength of earth structures, measures against arc slip, settlement measures, soil purification, etc., and soil improvement used in this method The present invention relates to a material spraying device.

  For example, the general process of the ground surface improvement method is to spread a predetermined amount of cement-based soil improvement material on the local ground and evenly spread it, and then excavate the ground to make soil improvement material. The soil is mixed and stirred, and compacted by rolling if necessary.

  The soil improvement material used in the conventional surface improvement method for the ground is the one that is packed in a bag, and the string of the bag with the soil improvement material is hung on the hook provided on the backhoe, and the bottom of the bag is lowered. It is opened to spread soil improvement material on the ground.

  By the way, the soil condition improving material stored in a bag has a problem in that the packaging cost is high and the price is high, and the used bag becomes an industrial waste, and the processing is costly.

  Also, if the soil condition improvement material stored in a bag is left to use until it is used, solidification or alteration, which is said to cause a so-called cold, will occur. For this reason, conventionally, using a pallet or sheet, etc. There is an inconvenience that the soil improvement material must be cured.

  Therefore, the object of the present invention is to reduce the price by using a soil improvement material of rose, eliminate the generation of industrial waste due to used bags, and eliminate the need for curing of the soil improvement material by sheets, etc. An object of the present invention is to provide a method for improving the surface layer of the ground that can be used and a spraying device for the soil improvement material used therefor.

  In order to solve the problems as described above, the surface layer improvement method of the present invention is to store the soil improvement material in the spray bucket, attach the spray bucket to the arm of the self-propelled vehicle, and set the suspension angle of the spray bucket. By changing to the front and rear, the soil improvement material stored inside is sprayed on the ground from the lower discharge port, and then the soil improvement material and soil are mixed and stirred, and compacted as necessary It is.

  In the spraying device according to the present invention, the spraying bucket for storing the soil improvement material is formed in an inner hollow box by closing the upper and lower sides of the peripheral wall with the bottom wall and the upper wall, and the self-propelled vehicle is formed on the upper wall of the spraying bucket. The attachment fitting attached to the tip of the arm of the arm and the inlet of the soil improvement material are provided, and the discharge port of the soil improvement material stored inside is provided at the lower position of the peripheral wall at one of the front and rear positions of the spray bucket Is adopted.

  The outlet of the spreading bucket may be automatically opened and closed by a change in the angle before and after the spreading bucket by a cover plate attached in a suspended manner.

  Here, the soil improvement material is used in the form of roses, which is stored in a silo installed near the work site, and the spray bucket placed on the transport vehicle is carried near the silo to improve the soil in the silo. Weigh the material, take out a predetermined amount, put it into the spreading bucket through the hose through the inlet, transport this spreading bucket to the work site with the transport vehicle, and attach it to the tip of the backhoe arm waiting on the site The spreading bucket is suspended and held by the backhoe by engaging the attached attachment to the fitting.

  When the spray bucket is attached to the backhoe so that the discharge port faces the cabin of the backhoe and lifted at an angle so that the discharge port is slightly above, the soil improvement material will spill out from the discharge port closed by the lid plate. If you change the angle of the back and forth of the spreading bucket with the backhoe so that the discharge port is a little lower, the soil improvement material inside will spill out from the discharge port and can be sprayed on the ground. By moving the spreading bucket with the backhoe while maintaining the front and rear angles of the spreading bucket as described above, the soil quality improving material can be spread substantially uniformly on the ground.

  After spraying the soil conditioner on the ground as described above, mix and stir the soil conditioner and soil using an excavator or stirrer, and then compact by roller rolling or the like as necessary. Is what you do.

  According to the present invention, since the soil improvement material is stored in the spray bucket and sprayed on the ground, it becomes possible to use the rose soil improvement material, reducing the price of the soil improvement material and being used It is possible to eliminate the generation of industrial waste due to later bags.

  In addition, if the soil improvement material of rose is used, the soil improvement material can be stored in the silo, taken out from this silo and filled in the spraying bucket, thereby curing the soil improvement material with a sheet etc. Can be eliminated, and the work can be simplified.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIGS. 1 to 3, the spraying device 1 used in the surface layer improving method of the present invention is formed by a spraying bucket 2 for storing a soil quality improving material, and the spraying bucket 2 has a bottom wall 4 at the top and bottom of a rectangular peripheral wall 3. Closed by the upper wall 5 and formed into a solid box that is hollow inside and horizontally long. On the upper wall 5 of the spreading bucket 2, an attachment fitting 6 attached to the tip of the arm of the backhoe and a soil improvement material that can be opened and closed with a lid. The structure is provided with an inlet port 7 and an air vent pipe 8, and a discharge port 9 for a soil conditioner housed therein is provided at the lower position of the front wall 3 a facing the backhoe cabin at the peripheral wall of the spray bucket 2. It has become.

  The discharge port 9 of the spreading bucket 2 is formed in a horizontally long continuous shape in the width direction of the front wall 3a, and the upper end thereof can be freely opened and closed by a cover plate 11 attached to the upper edge of the discharge port 9 with a plurality of hinges 10. When the is in a horizontal posture, the lid plate 11 suspended by its own weight closes the discharge port 9.

  As shown in FIG. 3, a manual lock mechanism 24 that can fix the cover plate 11 in the closed position with respect to the discharge port 9 is provided on the side surface of the spray bucket 2. For example, the locking mechanism 24 has a structure in which a hook pivotally fixed to the side surface of the spreading bucket 2 is engaged with and disengaged from the protruding shaft of the cover plate 11, and the soil improvement material is put into the spreading bucket 2. When the spray bucket 2 is transported, the cover mechanism 11 is engaged to fix the cover plate 11 in the closed position, and when the soil improvement material starts spraying, the lock mechanism 24 is disengaged and the cover plate 11 is opened. To.

  The above-mentioned coupling fitting 6 fixes a pair of brackets 12 which are long in the front-rear direction at a position slightly closer to the rear wall 3 b on the upper wall 5 of the spreading bucket 2, and two coupling shafts 13 at the front-rear position between the brackets 12. As shown in FIG. 4, the attachment 17 is formed by linking 14 to the arm 16 so that the angle of the attachment 17 is variable by a hydraulic cylinder 18 as is well known. In this portion, a pair of front and rear hooks that are approached and separated by a hydraulic cylinder 17b are provided. In order to connect the attachment 17 and the coupling fitting 6, the coupling shafts 13 and 14 are connected with the pair of hooks approaching each other. The pair of hooks are separated by the extension of the hydraulic cylinder 17b and locked to the coupling shafts 13 and 14 by the extension of the hydraulic cylinder 17b. From the emission 15a, combined with the separation of the spraying bucket 2 it is made to be operated.

  Further, the attachment 17 can change the suspension angle before and after the suspended spraying bucket 2 by extending and contracting the hydraulic cylinder 18 in a state where the spraying bucket 2 is attached and suspended. Yes.

  On the front wall 3a of the spreading bucket 2, a vibration motor 19 that is operated by a power source on the backhoe 15 side is attached, and by applying vibration to the spreading bucket 2 when spreading the soil improvement material, the occurrence of a bridge phenomenon of the soil improvement material is generated. This ensures that the entire amount can be discharged.

  Next, the surface layer improvement construction method of this invention implemented using the said spraying apparatus is demonstrated.

  For example, the soil improvement material A such as cement or lime is used in a loose state, and is stored in the silo 20 installed near the work site as shown in FIG. The sprinkling bucket 2 placed is carried close to the silo 20, the soil improvement material A in the silo 20 is taken out by the take-out means and weighed, and this soil improvement material A is put into the spraying bucket 2 through the hose 22 from the inlet 7. Throw inside. In this case, the lid plate 11 of the spreading bucket 2 is engaged with the lock mechanism 24 to fix the lid plate 11 in the closed position.

  Here, the silo 20 is provided with a printer mechanism for measuring the amount taken out and displaying it on a weigher when taking out the soil improvement material A with the taking-out means, and printing out the amount taken on paper or the like, and discharging it. The amount of application of the soil quality improving material A used for the surface layer improvement method can be managed and reported.

  When the introduction of the soil improvement material A into the spray bucket 2 is completed, the spray bucket 2 is transported to the work site by the transport vehicle 21, and the attachment 17 attached to the tip of the arm 16 of the backhoe 15 waiting at the site is coupled. By engaging with the metal fitting 6, the spreading bucket 2 is held suspended by the backhoe 15, and the transport vehicle 21 is moved away from the work site.

  In addition, in the introduction of the soil improvement material A into the spray bucket 2, the backhoe 15 is moved near the silo 20 with the spray bucket 2 attached to the tip of the arm 16 of the backhoe 15, and the tip of the arm 16 is moved. It is also possible to directly feed the attached spraying bucket 2 from the silo 20 and eliminate the use of the transport vehicle 21.

  As shown in FIG. 4, the spray bucket 2 is attached to the backhoe 15 so that the discharge port 9 provided in the front wall 3 a faces the cabin 15 a of the backhoe 15, the engagement of the lock mechanism 24 is released, and the cover plate 11 is removed. If the spray bucket 2 is made free and lifted at an angle such that the discharge port 9 is slightly above, the soil improvement material A will be displaced toward the rear wall 3b and spill out from the discharge port 9 closed by the cover plate 11. There is no.

  In order to spread the soil improvement material A on the ground at the work site, as shown in FIG. 6, the arm 16 of the backhoe 15 is operated so that the spray bucket 2 is directly above the spray position, and then the hydraulic cylinder 18 is extended. Or it is made to shrink, and the angle before and behind the spreading bucket 2 is changed.

  When the spraying bucket 2 is at an angle such that the discharge port 9 is slightly lowered by the hydraulic cylinder 18, the soil improvement material A inside pushes open the cover plate 11 and spills out from the discharge port 9 as shown in FIG. 6. As a result, spraying on the ground is started, and the position of the spray bucket 2 is changed by expanding and contracting each hydraulic cylinder 23, 25, turning operation of the arm 16, moving the backhoe 15 and the like while maintaining the sprayed state with the hydraulic cylinder 18. Thus, an appropriate amount of the soil quality improving material A is sprayed so as to be substantially uniform with respect to the ground.

  In addition, when a part of the soil improvement material A sprayed on the ground is piled up in a mountain shape, the spray bucket 2 is moved horizontally while being close to the ground, and the soil improvement material A is directly leveled by the spray bucket 2. Like that.

  After spraying the soil improvement material A on the ground as described above, although not shown in the figure, after mixing and stirring the soil improvement material and soil using an excavator or a stirrer, If necessary, a hard plate-like artificial ground layer or a soil layer with improved soil quality can be produced by compacting by roller rolling or the like.

Partial cutaway side view of the spraying device Front view of spraying device Partial cutaway perspective view of spraying device Side view showing the spraying device attached to the backhoe arm Partially cutaway side view showing the state where the spraying device is filled with soil improvement material Side view showing a state where soil improvement material is being sprayed with a spraying device attached to the backhoe

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spreading device 2 Spreading bucket 3 Square surrounding wall 4 Bottom wall 5 Top wall 6 Connecting metal fitting 7 Input port 8 Air venting pipe 9 Outlet port 10 Hinge 11 Cover plate 12 Brackets 13 and 14 Connecting shaft 15 Backhoe 16 Arm 17 Attachment 18 Hydraulic cylinder 19 Vibration motor 20 Silo 21 Transport vehicle 22 Hose 23 Hydraulic cylinder 24 Lock mechanism 25 Hydraulic cylinder

Claims (3)

  The soil improvement material is stored in the spray bucket, this spray bucket is attached to the arm of the self-propelled vehicle, and the suspension angle of the spray bucket is changed back and forth, so that the soil improvement material stored inside is discharged to the lower outlet This is a surface improvement method for the ground, which is then sprayed on the ground and then mixed and stirred with soil improvement material and soil, and compacted as necessary.   A spreading bucket for storing soil improvement materials is formed in a hollow box with the upper and lower walls closed by a bottom wall and an upper wall. An attachment attached to the top wall of the spreading bucket on the tip of the arm of a self-propelled vehicle The soil-improving material spraying apparatus is provided with an inlet for the soil-improving material, and provided with a discharge port for the soil-improving material housed in the lower portion of the peripheral wall at one of the front and rear positions of the spraying bucket.   3. The soil improvement material spraying device according to claim 2, wherein the discharge port of the spraying bucket is automatically opened and closed by a change in the angle before and after the spraying bucket by a cover plate attached in a suspended manner.

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