Ground improvement material hose winder and ground improvement machine

Abstract

To provide a ground improvement material hose winder and a ground improvement machine which eliminate troublesome handling of the ground improvement material hose.SOLUTION: A ground improvement machine 1 includes a self-propelled base machine 2, a leader 4 provided vertically in front of the base machine 2, a tubular rod 7 which, being a flow path for ground improvement material, is provided vertically and movable up and down the leader 4, a swivel joint 10 provided at the upper end of the rod 7, a ground improvement material hose 11 connected to the rod 7 via the swivel joint 10, a reel 13 that winds up or pays out the ground improvement material hose in a row depending on the state of the rod 7 that is moved up or down, and a hydraulic motor 14 that rotates the reel 13.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a winder for a hose for soil improvement material and a soil improvement machine. [Background technology]

[0002] Patent document 1 describes a ground improvement machine in which a screw shaft (rod) is attached to a leader provided in front of the work machine (base machine) so that it can be raised and lowered, and an injection hose (soil improvement material hose) for a ground improvement agent (soil improvement material) is connected to the upper end of the screw shaft via a swivel joint.

[0003] In this soil improvement machine, the injection hose (soil improvement material hose) has a length that reaches from the upper end of the screw shaft (rod) raised relative to the leader to the work machine (base machine). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 2736008 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned soil improvement machine, the soil improvement material hose is suspended from a swivel joint located at the upper end of the rod, so when the rod is lowered, it comes into contact with the ground and is dragged along. This makes it difficult to handle the soil improvement material hose in the soil improvement machine.

[0006] The present invention has been made in consideration of the above problems, and aims to provide a winder for a hose for ground improvement material and a ground improvement machine that eliminates the hassle of handling the hose for ground improvement material. [Means for solving the problem]

[0007] (1) The present invention relates to a reel for a hose for ground improvement material (e.g., hose reel 12 described later), which is characterized in that it comprises a reel (e.g., reel 13 described later) that winds or pays out a hose for ground improvement material (e.g., hose 11 for ground improvement material described later) in a row depending on the state of the raised and lowered rod, and a hydraulic motor (e.g., hydraulic motor 14 described later) that rotates the reel. The reel is connected to the upper end of a tubular rod (e.g., rod 7 described later) that is vertically arranged as a flow path for the ground improvement material and that can be raised and lowered in a ground improvement machine (e.g., ground improvement machine 1 described later) via a swivel joint (e.g., swivel joint 10 described later). The hose for ground improvement material is connected to the upper end of the tubular rod (e.g., rod 7 ... that can be raised and lowered in the ground improvement machine (e.g., ground improvement machine 1 described later)

[0008] (2) The present invention also relates to a reel for a hose for ground improvement material, as described in (1) above, characterized in that the reel is provided behind the rod so that the rotation axis of the reel faces left and right, and the reel rotates in a direction in which the front side of the reel moves downward, thereby winding up the hose for ground improvement material.

[0009] (3) The present invention also relates to a reel for a hose for ground improvement material as described in (1) or (2) above, characterized in that the hose for ground improvement material is maintained in a tensioned state by raising and lowering the rod and rotating the reel.

[0010] (4) The present invention also relates to a reel for a hose for ground improvement material as described in (1) or (2) above, characterized in that the hose for the ground improvement machine is maintained in a non-slack state by the raising and lowering of the rod and the rotation of the reel.

[0011] (5) The present invention also relates to a ground improvement machine (for example, the ground improvement machine 1 described later) comprising a self-propelled base machine (for example, the base machine 2 described later), a leader (for example, the leader 4 described later) vertically arranged in front of the base machine, a tubular rod (for example, the rod 7 described later) vertically arranged on the leader as a flow path for a ground improvement material and capable of being raised and lowered, a swivel joint (for example, the swivel joint 10 described later) arranged at the upper end of the rod, a hose for ground improvement material (for example, the hose 11 for ground improvement material described later) connected to the rod via the swivel joint, a reel (for example, the reel 13 described later) that winds or unwinds the hose for ground improvement material in a row depending on the state of the raised and lowered rod, and a hydraulic motor (for example, the hydraulic motor 14 described later) that rotates the reel.

[0012] (6) The present invention also relates to the ground improvement machine described in (5) above, characterized in that the reel is provided behind the rod so that the rotation axis of the reel faces left and right, and the reel rotates in a direction in which the front side of the reel moves downward, thereby winding up the hose for ground improvement material.

[0013] (7) The present invention also relates to a ground improvement machine as described in (5) or (6) above, characterized in that the hose for ground improvement material is maintained in a tensioned state by raising and lowering the rod and rotating the reel.

[0014] (8) The present invention also relates to a ground improvement machine as described in (5) or (6) above, characterized in that the hose for ground improvement material is maintained in a non-slack state by the raising and lowering of the rod and the rotation of the reel. Effect of the Invention

[0015] According to the reel for a hose for ground improvement material described in (1) to (4) above and the ground improvement machine described in (5) to (8) above of the present invention, the hassle of handling the hose for ground improvement material can be eliminated. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a side view of a ground improvement machine according to a first embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 4 is a side view of a ground improvement machine according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a soil improvement machine according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0018] [First embodiment] First, the configuration of a ground improvement machine 1 according to a first embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a side view of the ground improvement machine 1 according to the first embodiment of the present invention. Figure 2 is a front view of a hose reel 12.

[0019] The ground improvement machine 1 shown in Fig. 1 is a pile driver, a construction machine used for the soil cement column method (columnar improvement method) and the steel pipe soil cement pile method. The soil cement column method is a method in which a soil improvement material (cement milk, etc.) made by mixing a cement-based solidification material with water to make a slurry is injected into a hole excavated in the ground in the shape of a column, and the soil improvement material is mixed with the excavated soil to create a chemically solidified soil cement column. The steel pipe soil cement pile method is a method that combines the soil cement column method with a steel pipe pile, in which a steel pipe pile is buried in the core of soil cement before it is chemically solidified.

[0020] Specifically, the ground improvement machine 1 includes a self-propelled base machine 2 and a ground improvement unit 3 attached to the base machine 2.

[0021] The ground improvement unit 3 is what is called a "front" in the civil engineering industry and is attached movably to the front of the base machine 2. Specifically, the ground improvement unit 3 includes a leader 4, a rail 5, a rod chuck 6, a rod 7, an excavation tool 8, a rod guide 9, a swivel joint 10, a soil improvement material hose 11, a hose reel (a reel for a soil improvement material hose) 12, and a connecting hose 15. For the sake of simplicity, the following description will be given on the assumption that the soil improvement unit 3 is in an upright position.

[0022] The leader 4 is made of a square material (square pipe) having a predetermined length, and is provided vertically in front of the base machine 2 and behind the rod 7.

[0023] A rod guide 9 that rotatably supports the rod 7 is fixed to the lower end of the front surface of the leader 4. A rail 5 that enables the rod chuck 6 to move up and down is provided at a position above the rod guide 9 on the front surface of the leader 4 from the lower to the upper end in parallel with the rod 7. The leader 4 and the rail 5 may be formed integrally or separately.

[0024] Rod chuck 6 is provided so as to be capable of ascending and descending along rail 5, and ascends and descends along rail 5 at a predetermined stroke. This rod chuck 6 incorporates a chuck mechanism (not shown) and a rotation mechanism (not shown). The chuck mechanism holds or releases any intermediate portion of rod 7. The rotation mechanism is composed of a motor (not shown) and the like, and rotates rod 7 held by the chuck mechanism.

[0025] The rod 7 is tubular and serves as a flow path for the ground improvement material, and is provided vertically and movable up and down on the leader 4. A drilling tool 8 for drilling a hole for injecting the ground improvement material is attached to the lower part of the rod 7. The lower end of a swivel joint 10 to which the tip of a ground improvement material hose 11 for supplying the ground improvement material is connected is attached to the upper end of the rod 7 so as to be capable of relative rotation. The upper end of the rod 7 forms an opening (not shown) for introducing the ground improvement material. The inside of the rod 7 forms a flow path for the ground improvement material supplied from the ground improvement material hose 11. The lower end of the rod 7 and its periphery form an opening (not shown) for discharging the ground improvement material.

[0026] An arbitrary intermediate portion of the rod 7 is held or released by a chuck mechanism (not shown) built into the rod chuck 6. The rod 7 held by the chuck mechanism is rotated by a rotation mechanism (not shown) built into the rod chuck 6, and moves up and down integrally with the rod chuck 6 at a predetermined stroke.

[0027] The excavation tool 8 is attached to the lower part of the rod 7, and rotates and rises and falls integrally with the rod 7. This excavation tool 8 excavates holes into which the ground improvement material is injected, and mixes the ground improvement material with the excavated soil in the excavated holes.

[0028] The rod guide 9 is fixed to the lower end of the front surface of the leader 4, and rotatably supports the rod 7 below the rod chuck 6.

[0029] The swivel joint 10 is provided at the upper end of the rod 7. The upper end of the rod 7 is rotatably attached to the lower end of the swivel joint 10, and rises and falls together with the rod 7. The tip of a hose 11 for ground improvement material is connected to the side of the swivel joint 10. In other words, the swivel joint 10 functions as a rotating joint that connects the tip of the hose 11 for ground improvement material to the opening (not shown) at the upper end of the rotating rod 7.

[0030] The ground improvement material hose 11 shown in FIGS. 1 and 2 has its tip connected to the upper end of the rod 7 via a swivel joint 10. This ground improvement material hose 11 is connected to a pump (not shown) that shares the ground improvement material via a hose reel 12 and a connecting hose 15. Further, the ground improvement material hose 11 is maintained in a non-loose state by the raising and lowering of the rod 7 and the rotation of the reel 13 that constitutes the hose reel 12. That is, the ground improvement material hose 11 is maintained in a state where tension is applied by the raising and lowering of the rod 7 and the rotation of the reel 13 that constitutes the hose reel 12.

[0031] The hose reel 12 is provided behind the leader 4. Specifically, the hose reel 12 includes a reel 13 and a hydraulic motor 14.

[0032] The reel 13 winds up or pays out the ground improvement material hose 11 in a single row according to the state of the raised and lowered rod 7. This reel 13 is provided behind the rod 7 such that the rotation axis of the reel 13 faces left and right, and the ground improvement material hose 11 is wound up when the reel 13 rotates in the direction in which the front side (the left side in FIG. 1) of the reel 13 moves upward (the clockwise direction in FIG. 1), and the ground improvement material hose 11 is paid out when the reel 13 rotates in the direction in which the front side (the left side in FIG. 1) of the reel 13 moves downward (the counterclockwise direction in FIG. 1). Specifically, the reel 13 includes a rotation axis 131 and a pair of left and right guides 132.

[0033] The rotation axis 131 also serves as the rotation axis of the hydraulic motor 14.

[0034] The pair of left and right guides 132 guide the ground improvement material hose 11. The distance W between the pair of left and right guides 132 is set to be slightly larger than the thickness D of the ground improvement material hose 11. The relationship between the distance W between the pair of left and right guides 132 and the thickness D of the ground improvement material hose 11 is preferably D < W < 1.5D, and more preferably D < W < 1.2D.

[0035] The hydraulic motor 14 is a power source that rotates the reel 13. This hydraulic motor 14 rotates the reel 13 so that the ground improvement material hose 11 is kept in a non-slack state, that is, so that the ground improvement material hose 11 is kept in a state in which tension is applied.

[0036] Next, the operation of the hose winder 12 of the ground improvement machine 1 will be described with reference to FIG.

[0037] When the rod 7 descends, the hose winder 12 rotates the reel 13 to wind up the hose 11 for ground improvement material in a single row so that the hose 11 for ground improvement material is kept in a non-slack state, i.e., so that the hose 11 for ground improvement material is kept in a state in which tension is applied to the hose 11 for ground improvement material.

[0038] In addition, when the rod 7 rises, the hose winder 12 rotates the reel 13 to pay out the hose 11 for ground improvement material so that the hose 11 for ground improvement material is kept in a non-slack state, i.e., so that the hose 11 for ground improvement material is kept in a state where tension is applied to the hose 11 for ground improvement material.

[0039] [Second embodiment] Next, the configuration of a ground improvement machine 1 according to a second embodiment of the present invention will be described with reference to Fig. 3. Fig. 3 is a side view of the ground improvement machine 1 according to the second embodiment of the present invention. In the second embodiment, the winding and unwinding direction of the hose 11 for ground improvement material by the reel 13 is different from that of the first embodiment, but the other configurations are the same. Note that here, a description of the same configuration and operation as the first embodiment will be omitted.

[0040] The reel 13 takes up the hose 11 for ground improvement material by rotating in a direction in which the front side (left side in Fig. 3) of the reel 13 moves downward (counterclockwise direction in Fig. 3), and pays out the hose 11 for ground improvement material by rotating in a direction in which the front side (left side in Fig. 3) of the reel 13 moves upward (clockwise direction in Fig. 3). Note that, assuming that the hose 11 for ground improvement material has become slack, the slackened hose 11 for ground improvement material is shown by a dashed line in Fig. 3.

[0041] Such a soil improvement machine 1 and hose winder 12 can eliminate the cumbersome handling of the soil improvement material hose 11. Also, with the soil improvement machine 1 and hose winder 12, the reel 13 winds up the soil improvement material hose 11 in a single row, preventing disorderly winding.

[0042] Moreover, according to the ground improvement machine 1 and hose reel 12 of the second embodiment, even if the hose 11 for ground improvement material becomes loose, the hose 11 for ground improvement material hangs down in a U-shape below the reel 13 without disturbing the row, so that the hose 11 for ground improvement material does not deviate from the pair of left and right guides 132. In the case of the ground improvement machine 1 and hose reel 12 of the first embodiment, if the hose 11 for ground improvement material becomes loose, there is a possibility that the hose 11 for ground improvement material may deviate from the pair of left and right guides 132.

[0043] The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the spirit and technical concept of the present invention. In other words, the position, size, length, number, shape, material, etc. of each component can be appropriately changed. [Explanation of symbols]

[0044] 1 Ground improvement machine 2. Base Machine 3. Ground Improvement Unit 4. Leader 5 Rail 6 Rod Chuck 7. Rod 8 Drilling Tools 9 Rod Guide 10 Swivel joint 11 Soil improvement material hose 12 Hose reel (reel for hose for ground improvement materials) 13 Reel 131 Rotational axis 132 Guide 14 Hydraulic motor 15 Connecting hose W Spacing D Thickness

Claims

1. A reel that winds or unwinds a soil improvement material hose connected via a swivel joint to the upper end of a tubular rod that is vertically provided as a flow path for the soil improvement material and can be raised and lowered on the soil improvement machine, in a row depending on the state of the raised and lowered rod; and a hydraulic motor for rotating the reel. A reel for hoses used in ground improvement materials.

2. The reel is provided behind the rod so that the rotation axis of the reel faces left and right, and the reel rotates in a direction in which the front side of the reel moves downward to wind up the hose for ground improvement material. A winder for the hose for ground improvement material according to claim 1.

3. The ground improvement material hose is characterized in that a tensioned state is maintained by the raising and lowering of the rod and the rotation of the reel. A winder for a hose for ground improvement material according to claim 1 or 2.

4. The ground improvement material hose is characterized in that it is maintained in a non-slack state by the raising and lowering of the rod and the rotation of the reel. A winder for a hose for ground improvement material according to claim 1 or 2.

5. A self-propelled base machine and A reader provided vertically in front of the base machine; A tubular rod is vertically provided on the leader as a flow path for the ground improvement material and can be raised and lowered; A swivel joint provided at the upper end of the rod; A hose for ground improvement material connected to the rod via the swivel joint; A reel that winds or unwinds the ground improvement material hose in a row depending on the state of the raised and lowered rod; and a hydraulic motor for rotating the reel. Ground improvement machine.

6. The reel is provided behind the rod so that a rotation axis of the reel faces the left-right direction, and the reel rotates in a direction in which the front side of the reel moves downward to wind up the hose for ground improvement material. The ground improvement machine according to claim 5.

7. The ground improvement material hose is characterized in that a tensioned state is maintained by the raising and lowering of the rod and the rotation of the reel. The ground improvement machine according to claim 5 or 6.

8. The ground improvement material hose is characterized in that it is maintained in a non-slack state by the raising and lowering of the rod and the rotation of the reel. The ground improvement machine according to claim 5 or 6.

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