Slime treatment apparatus

Abstract

To provide a slime treatment apparatus which is equipped with a stirrer and a suction pump and facilitates the handling of a power line.SOLUTION: In the wire connection chamber 38 of the suctioning pump 27 of the slime treatment device 10, the lead [U-phase] 41u of the first wire 41 of the power line 40 and the lead [U-phase] 44u of the stirrer wire 44 are connected to each other, and the lead [V-phase] 41v of the first wire 41 and the lead [V-phase] 44v of the stirrer wire 44 are connected to each other, the lead [W phase] 41w of the first wire 41 and the lead [W phase] 44w of the stirrer wire 44 are connected, the lead [U phase] 42u of the second wire 42 of the power line 40 and the lead [U phase] 46u of the pump wire 46 are connected, and the lead [V phase] 42v of the second wire 42 and the lead [V phase] 46v of the pump wire 46 are connected. The lead [W phase] 42w of the second electric wires 42 and the lead [W phase] 46w of the pump electric wires 46 are connected to each other.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a slime treatment device for sucking up slime accumulated at the bottom of a pile in a borehole during foundation work. [Background technology]

[0002] Traditionally, foundation work involves a cast-in-place concrete pile method in which the ground is excavated down to the bearing layer, and concrete piles are constructed by placing reinforcement and pouring concrete into the excavated hole. In this method, the excavated hole is filled with a stabilizing fluid such as bentonite muddy water to prevent the hole from collapsing due to groundwater pressure, etc. The soil and slime (hereinafter referred to as "slime, etc.") generated by the excavation settle at the bottom of the pile. Pouring concrete over these impurities can result in poor quality concrete or an undesired pile bottom. In particular, in the case of an expanded-bottom pile, the diameter of the excavated hole is larger at the bottom of the pile than at the shaft, making it difficult to remove slime and other materials that accumulate in the corners.

[0003] One example of a technique for removing slime and the like is described in Patent Document 1 below (hereinafter referred to as the "Publication 1 invention"). The Publicly Known Document 1 invention has a propeller-type agitator attached below the suction port of a sand pump. The suction of the sand pump and the rotation of the propeller-type agitator are driven by separate drive sources. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-120784 Summary of the Invention [Problem to be solved by the invention]

[0005] As mentioned above, in the invention of the first prior art document, the suction of the sand pump and the rotation of the propeller mixer are driven by separate power sources, and therefore each requires a cable. Depending on the design conditions of the foundation work, for example, a cable with a diameter of about 40 to 50 millimeters may be lowered about 80 meters from the ground to the base of the pile, which makes it difficult to route the wiring and support the cable against its weight.

[0006] The present invention has been proposed in consideration of the above-mentioned circumstances, and aims to provide a slime treatment device that is equipped with an agitator and a suction pump, while having easy-to-handle power lines. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the slime treatment device of the present invention is a slime treatment device that sucks up slime that has accumulated at the bottom of a pile hole into which cast-in-place concrete is poured, when the pile hole is filled with stabilizing liquid, and is characterized by having an agitator that stirs the stabilizing liquid in the vicinity of the bottom, a suction pump that is spaced from the agitator and in the vicinity of the bottom, and sucks up slime together with the stabilizing liquid, and a wiring chamber to which a single power line extending from the ground, an agitator electric wire connected to the agitator, and a pump electric wire connected to the suction pump are connected.

[0008] The slime treatment device according to the present invention is characterized in that the suction pump has the wire connection chamber.

[0009] The slime treatment device of the present invention is characterized in that, in the wiring chamber, a first electric wire included in the power line is connected to the electric wire for the agitator, and a second electric wire included in the power line is connected to the electric wire for the pump.

[0010] The slime treatment device according to the present invention is characterized in that the power line, the agitator electric wire, and the pump electric wire are connected in the connection chamber. [Effects of the Invention]

[0011] The slime treatment device of the present invention is for sucking up slime accumulated at the bottom of a pile hole filled with stabilizing solution into which cast-in-place concrete is poured. It includes an agitator located near the bottom to agitate the stabilizing solution, a suction pump located near the bottom and spaced from the agitator to suck up the slime along with the stabilizing solution, and a wiring chamber to which a single power line extending from the ground, an agitator electric wire connected to the agitator, and a pump electric wire connected to the suction pump are connected. In other words, because a single power line supplies electricity to the agitator and the suction pump, handling the power line is easier than when the agitator and the suction pump are separate power lines. Furthermore, the power line can be easily wound up on the ground using a winding device.

[0012] In the slime treatment device according to the present invention, the suction pump has a wire connection chamber, which provides waterproofing and durability to the wire connection chamber.

[0013] In the slime treatment device according to the present invention, the first electric wire included in the power line is connected to the electric wire for the agitator, and the second electric wire included in the power line is connected to the electric wire for the pump in the connection chamber, so that the agitator and the suction pump can be controlled separately.

[0014] In the slime treatment device according to the present invention, the power line, the electric wire for the agitator, and the electric wire for the pump are connected in the connection chamber, so that the agitator and the suction pump can be operated in conjunction with each other. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic cross-sectional view of a pile hole showing a slime treatment apparatus according to a first embodiment of the present invention installed in the pile hole. [Figure 2] FIG. 2 is a see-through side view of the slime treatment apparatus according to the first embodiment of the present invention installed in a pile hole. [Figure 3] FIG. 3 is a plan view showing a state in which the slime treatment apparatus according to the first embodiment of the present invention is set up in a pile hole. [Figure 4] FIG. 4 is a schematic cross-sectional view of a wire connection chamber of the slime processing apparatus according to the first embodiment of the present invention. [Figure 5] FIG. 5 is a schematic cross-sectional view of a wire connection chamber of a slime treatment apparatus according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] The following is a description of a slime processing device according to an embodiment of the present invention. Figure 1 shows a state in which a slime processing device 10 according to this embodiment is installed in a pile hole 1. Figures 2 and 3 show the slime processing device 10.

[0017] As shown in FIG. 1, the slime treatment device 10 according to this embodiment is used to remove slime and the like (not shown) in a cast-in-place concrete pile construction method. That is, in the cast-in-place concrete pile construction method, a pile hole 1 into which cast-in-place concrete (not shown) is driven is excavated while filled with a stabilizing solution 6, and slime and the like accumulates at the bottom of the pile during excavation. Because slime and the like affect the quality of the cast-in-place concrete pile (not shown), the slime and the like are sucked out by the slime treatment device 10. The pile hole 1 is excavated, for example, by an earth drilling method, an all-casing method, a reverse drilling method, or the like, and a shaft portion 2 extending from the ground has a flared bottom portion 3 formed at its lower end, the diameter of which is larger than that of the shaft portion 2. The flared bottom portion 3 is roughly circular, with a center portion 4 at and near the center of the circle, and corner portions 5 at the circumference.

[0018] 2 and 3, the slime processing device 10 has a frame member 11, an agitator 25 and a suction pump 27 attached to the frame member 11, a flexible pipe 28 connected to the suction pump 27 and extending to the ground, a frame plate portion 13 attached to the frame member 11 and surrounding the agitator 25 and the suction pump 27, a floating member 29 for adjusting the center of gravity, and an operating unit (not shown) for performing operations on the ground to move the position of the expanded bottom portion 3. In the following description, in a plan view, the direction from the center 4 of the expanded bottom portion 3 toward the corner 5 is referred to as the front, the direction from the corner 5 toward the center 4 is referred to as the rear, and the direction perpendicular to the front-to-rear direction is referred to as the left or right (see FIG. 3).

[0019] The frame member 11 is composed of a plurality of frame members 12 and a plurality of reinforcing members 34 fixed to the frame members 12, and has a frame plate portion 13 as a member that forms the outer periphery (hereinafter, the frame members 11 and the frame plate portion 13 will be collectively referred to as the "frame main body"). The frame members 12 are, for example, H-beams. The reinforcing members 34 are in the form of long rods and are welded to the frame members 12. A balance weight 35 is welded to the frame member 12 at the rear of the frame main body.

[0020] The frame plate portion 13 is welded to the reinforcing material 34. The frame plate portion 13 has a front frame portion 14 facing the pile wall 7 of the pile hole 1, a rear frame portion 17 on the opposite side of the front frame portion 14, and side frame portions 18 connected to both ends of the front frame portion 14 and both ends of the rear frame portion 17, respectively. The frame plate portion 13 is rectangular or fan-shaped in plan view, with the front frame portion 14 being wider than the rear frame portion 17. A treatment space 21 is formed inside the area defined by the frame portions 14, 17, and 18. The upper end of the frame plate portion 13 is open, forming an upper end opening 19, and the lower end of the frame plate portion 13 is also open, forming a lower end opening 20. Therefore, the top and bottom of the treatment space 21 are open via the upper end opening 19 and the lower end opening 20.

[0021] The front frame portion 14 has a vertical surface portion 15 that is perpendicular or approximately perpendicular to the expanded bottom portion 3, and an inclined surface portion 16 that is connected to the upper end of the vertical surface portion 15 and inclined inward. The vertical surface portion 15 is the lower part of the front frame portion 14, and the inclined surface portion 16 is the upper part of the front frame portion 14. The side frame portions 18 are formed with support portions 22 through which a measuring tape 23 is passed to measure the depth of the expanded bottom portion 3. The measuring tape 23 is marked with a scale and has an iron measuring weight 24 attached to its tip. The measuring tape 23 extends from the ground along a flexible pipe 28 and is positioned next to the front frame portion 14 via the support portion 22, so that the measuring weight 24 can be lowered into the corner portion 5.

[0022] The agitator 25 and suction pump 27 are disposed within the processing space 21 of the frame plate portion 13. The agitator 25 is disposed near the front frame portion 14 of the frame main body portion and is attached to the frame material 12. The suction pump 27 is disposed near the rear frame portion 17 of the frame main body portion and is attached to the frame material 12. The agitator 25 is disposed close to the expanded bottom portion 3 with the stirring blades 26 facing toward the expanded bottom portion 3. The suction pump 27 is disposed at a distance from the agitator 25 and close to the expanded bottom portion 3 with the suction port facing toward the expanded bottom portion 3. The suction pump 27 has a blade portion 36, which is located near the suction port. The flexible pipe 28 connected to the suction pump 27 is, for example, bellows-shaped and is elastically deformable.

[0023] The float member 29 is a float made of air, foam, or the like. The float member 29 is connected to the frame main body via a rod-shaped member such as an angle. Specifically, the long rod-shaped member 30 is connected to the frame material 12 at the upper end of the frame member 11, spanning the upper end opening 19, and the short rod-shaped member 31 is connected to the side frame portion 18 at the lower end of the side frame portion 18, protruding outward. The float member 29 is located between the long rod-shaped member 30 and the short rod-shaped member 31, outside the side frame portion 18, and is connected to each rod-shaped member 30, 31.

[0024] The agitator 25 and the suction pump 27 are detachable from the frame material 12, and the floating member 29 is also detachable together with the long rod-shaped member 30 from the frame material 12. Therefore, the frame main body, the agitator 25, the suction pump 27, and the floating member 29 are each separable.

[0025] The suction pump 27 will now be described with reference to the drawings.

[0026] The suction pump 27 has a main body 37 that houses a three-phase AC motor or the like, which serves as a drive source (not shown), and a wiring chamber 38 is formed above the main body 37. As shown in Figure 4, the wiring chamber 38 is connected to a single power line 40 that extends from the ground toward the pile base 3, an agitator electric wire 44 that is connected to the agitator 25, and a pump electric wire 46 that is connected to the drive source. The connection points between the power line 40 and each electric wire 44, 46 and the wiring chamber 38 are watertight to prevent water intrusion.

[0027] The power line 40 is, for example, a cabtire cable or the like, and is coated with rubber, polyvinyl chloride, or the like. The power line 40 includes a plurality of electric wires and a ground wire 43. A first electric wire 41, which is one of the plurality of electric wires included in the power line 40, includes a lead wire [U phase] 41u, a lead wire [V phase] 41v, and a lead wire [W phase] 41w. Furthermore, a second electric wire 42, which is one of the plurality of electric wires included in the power line 40, includes a lead wire [U phase] 42u, a lead wire [V phase] 42v, and a lead wire [W phase] 42w. Therefore, the power line 40 includes at least seven cables (ground wire 43, first electric wire 41 (lead wire [U phase] 41u, lead wire [V phase] 41v, lead wire [W phase] 41w), and second electric wire 42 (lead wire [U phase] 42u, lead wire [V phase] 42v, lead wire [W phase] 43w)). In FIG. 4, the first electric wire 41 and the second electric wire 42 are illustrated in a simplified manner, and of the electric wires 41 and 42, only the single lead wires 41[U-phase]u and 42[U-phase]u are shown.

[0028] The agitator electric wire 44 includes a plurality of electric wires and a ground wire 45. The plurality of electric wires included in the agitator electric wire 44 are a lead wire [U phase] 44u, a lead wire [V phase] 44v, and a lead wire [W phase] 44w. The pump electric wire 46 includes a plurality of electric wires. The plurality of electric wires included in the pump electric wire 46 are a lead wire [U phase] 46u, a lead wire [V phase] 46v, and a lead wire [W phase] 46w. Note that in FIG. 4, the agitator electric wire 44 and the pump electric wire 46 are illustrated in a simplified manner, and only the single lead wire [U phase] 44u and lead wire [U phase] 46u are shown.

[0029] The ground wire 43 of the power line 40 and the ground wire 45 of the agitator electric wire 44 are both fastened together with bolts and fixed to a part of the inside of the wiring chamber 38. The lead wire [U phase] 41u of the first electric wire 41 is connected to the lead wire [U phase] 44u of the agitator electric wire 44, the lead wire [V phase] 41v of the first electric wire 41 is connected to the lead wire [V phase] 44v of the agitator electric wire 44, and the lead wire [W phase] 41w of the first electric wire 41 is connected to the lead wire [W phase] 44w of the agitator electric wire 44. Similarly, the lead wire [U phase] 42u of the second electric wire 42 is connected to the lead wire [U phase] 46u of the pump electric wire 46, the lead wire [V phase] 42v of the second electric wire 42 is connected to the lead wire [V phase] 46v ​​of the pump electric wire 46, and the lead wire [W phase] 42w of the second electric wire 42 is connected to the lead wire [W phase] 46w of the pump electric wire 46.

[0030] The slime processing apparatus 10 is configured as described above. In the slime processing apparatus 10, a single power line 40 supplies electricity to the agitator 25 and the suction pump 27, making it easier to handle the power line 40 than if the power line required for the agitator 25 and the power line required for the suction pump 27 were separate. In addition, the power line 40 can be easily wound up on the ground using a winding device (not shown).

[0031] In the slime processing device 10, the wiring chamber 38 is formed above the main body 37 of the suction pump 27. This provides a waterproof and durable wiring chamber 38. In addition, in the wiring chamber 38, the first electric wire 41 of the power line 40 and the agitator electric wire 44 are serially connected, and the second electric wire 42 of the power line 40 and the pump electric wire 46 are serially connected, so that the agitator 25 and the suction pump 27 can be controlled separately.

[0032] Next, a method of using the slime processing device 10 will be described.

[0033] As shown in Figure 1, the slime treatment device 10 is erected in a pile hole 1 and submerged in the stabilizing solution 6. The top and bottom of the treatment space 21 of the frame plate part 13 are open (see Figure 2), and the stabilizing solution 6 passes through the treatment space 21 and escapes upward, so the device is less susceptible to pressure from the stabilizing solution 6. Therefore, the slime treatment device 10 can be easily submerged.

[0034] As shown in Figure 2, when the slime processing device 10 arrives at the expanded bottom section 3, the front frame section 14 of the frame plate section 13 is positioned along the pile wall 7 and the corner section 5. When the agitator 25 and suction pump 27 are operated, the agitator 25 agitates the stabilizing solution 6, generating a water current that also agitates the slime, etc. Because the agitator 25 is located inside the frame plate section 13, the slime, etc. is also agitated inside the frame plate section 13, and because the suction pump 27 is also located inside the frame plate section 13, the slime, etc. is reliably sucked up together with the stabilizing solution 6 within the processing space 21 by the suction pump 27.

[0035] Specifically, the agitator 25 generates a radial water flow, so that part of the water flow is directed toward the suction pump 27, and the slime and other particles are directly sucked into the suction pump 27 (arrow 32 in FIG. 2). Meanwhile, the slime and other particles riding on the water flow generated on the side opposite the suction pump 27 move away from the suction pump 27. However, the front frame 14 is located at the end of the flow, and because the inclined surface 16 is inclined toward the agitator 25, the water flow that hits the inclined surface 16 is turned back toward the suction pump 27 (arrow 33 in FIG. 2). At this time, the slime and other particles deposited in the corners 5 of the expanded bottom 3 are also lifted up by the water flow and directed toward the suction pump 27. Therefore, the slime and other particles stirred inside the frame plate 13 (treatment space 21), including the slime and other particles deposited in the corners 5, are accurately and efficiently sucked up by the suction pump 27. The sucked slime and other particles are discharged to the ground through a flexible pipe 28.

[0036] In Figure 3, the slime processing device 10 is moved around the corner 5 within the expanded bottom portion 3. On the ground, the frame main body is lifted by a crane or the like (not shown), and the operating unit is operated. The slime processing device 10 moves within the expanded bottom portion 3 and is positioned at the location where slime, etc. has accumulated, allowing slime, etc. to be sucked up accurately and efficiently throughout the entire expanded bottom portion 3.

[0037] When the slime processing device 10 is submerged in the stabilizing solution 6, or when the slime processing device 10 is moved along the expanded bottom portion 3, the flexible pipe 28 is affected by the pressure of the water flow and may bend or be swept away unintentionally, and the weight of the agitator 25 and suction pump 27 may cause the slime processing device 10 to tilt in the direction of its center of gravity, but the floating member 29 adjusts the center of gravity. Therefore, the slime processing device 10 can be moved stably.

[0038] In the slime processing device 10, a support portion 22 is formed on the side frame portion 18, and a measurement tape 23 for measuring the depth of the expanded bottom portion 3 is passed through the support portion 22. The measurement tape 23 extends from the ground along the flexible pipe 28 and is placed next to the front frame portion 14 via the support portion 22, so that the measurement weight 24 is lowered into the corner portion 5. Thus, the depth of the expanded bottom portion 3 at the corner portion 5 can be measured.

[0039] In the slime processing device 10, the agitator 25 and suction pump 27 are detachable from the frame material 12, and the floating member 29 is also detachable together with the long rod-shaped member 30 from the frame material 12. By removing the agitator 25 and suction pump 27 from the frame material 12, the frame main body can be easily transported. Furthermore, the agitator 25 and suction pump 27 can be applied to other slime processing devices and are highly versatile.

[0040] In the slime processing device 10, the suction pump 27 has a blade portion 36 for stirring the stabilizing solution 6, so that the slime and the like that have accumulated in the expanded bottom portion 3 are reliably stirred by the stirring of the stabilizing solution 6 by the blade portion 36 in addition to the stirring of the stabilizing solution 6 by the agitator 25. Therefore, the slime and the like can be sucked out accurately and efficiently.

[0041] Next, a slime processing device 210 according to a second embodiment of the present invention will be described with reference to the drawings. Fig. 5 shows the wire connection chamber 238 of the slime processing device 210 according to the second embodiment. Note that, hereinafter, the configuration different from the slime processing device 10 according to the first embodiment will be mainly described, and the description of the configuration similar to the slime processing device 10 will be omitted as appropriate.

[0042] The power line 240 of the slime treatment device 210 includes at least an earth wire 243, a lead wire [U phase] 240u, a lead wire [V phase] 240v, and a lead wire [W phase] 240w. In the connection chamber 238, the power line 240 is connected to an agitator electric wire 244 and a pump electric wire 246, that is, the lead wire [U phase] 240u of the power line 240 is connected to the lead wire [U phase] 244u of the agitator electric wire 244 and the lead wire [U phase] 246u of the pump electric wire 246. Similarly, the lead wire [V phase] 240v of the power line 240 is connected to the lead wire [V phase] 244v of the agitator electric wire 244 and the lead wire [V phase] 246v of the pump electric wire 246, and the lead wire [W phase] 240w of the power line 240 is connected to the lead wire [W phase] 244w of the agitator electric wire 244 and the lead wire [W phase] 246w of the pump electric wire 246.

[0043] In the wiring chamber 238 of the slime treatment device 210, the power line 240, the agitator electric wire 244, and the pump electric wire 246 are connected in parallel, so that the agitator 25 and the suction pump 227 can be linked together.

[0044] In addition, another embodiment of the present invention has a rod pipe with high rigidity instead of a flexible pipe. Another alternative embodiment does not have a support and a measuring tape. In another embodiment, the agitator, the suction pump, and the floating member are fixed to the frame portion and cannot be detached. Another alternative embodiment does not have a float member. In another embodiment, the number of agitators is optional, and therefore, the number of agitators may be two or more. Another embodiment does not have a frame plate. In another embodiment, the wiring chamber is provided separately from the suction pump. In another embodiment, there are a plurality of agitators and agitator wires, and a plurality of suction pumps and suction pump wires, and the power line includes a plurality of electric wires corresponding to each electric wire.

[0045] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design modifications can be made to the present invention without departing from the scope of the claims. [Explanation of symbols]

[0046] 1. Pilehole 2 Shaft 3. Enlarged base (bottom) 4 Central part 5 Corners 6 Stabilizer 7 Pile wall 10,210 Slime processing equipment 11 Frame member 12 Frame material 13 Frame plate 14 Front frame 15 Vertical section 16 Slope section 17 Rear frame 18 Side frame 19 Top opening 20 Bottom opening 21 Processing Space 22 Support part 23 Measuring tape 24 Measuring weight 25 Mixer 26 Disturbance blade 27,227 Suction Pump 28 Flexible pipe 29 Floating member 30 Long rod-shaped member 31 Short rod-shaped member 32,33 Arrows 34 Reinforcement 35 balance weight 36 Wing 37 Main body 38,238 Wiring Room 40,240 Power line 41 Daiichi Electric Cable 41u Lead wire [U phase] 41v lead wire [V phase] 41w lead wire [W phase] 42 Second electric wire 42u Lead wire [U phase] 42v lead wire [V phase] 42w lead wire [W phase] 43,243 Ground wire 44,244 Agitator wire 44u, 244u Lead wire [U phase] 44v, 244v lead wire [V phase] 44w, 244w lead wire [W phase] 45,245 ground wire 46,246 Pump wires 46u, 246u Lead wire [U phase] 46v, 246v lead wire [V phase] 46w, 246w lead wire [W phase] 240u Lead wire [U phase] 240v lead wire [v phase] 240w lead wire [W phase]

Claims

1. A slime treatment device that sucks up slime deposited at the bottom of a pile hole in which cast-in-place concrete is poured, while the pile hole is filled with a stabilizing liquid. an agitator located close to the bottom and agitating the stabilized liquid; A suction pump that is spaced apart from the agitator and is located close to the bottom and sucks slime together with the stabilizing liquid; a wiring chamber to which a single power line extending from the ground, an agitator electric wire connected to the agitator, and a pump electric wire connected to the suction pump are connected, A slime processing device characterized by:

2. The suction pump has the wire connection chamber.

2. The slime treatment device according to claim 1.

3. In the wiring chamber, a first electric wire included in the power line is connected to the agitator electric wire, and a second electric wire included in the power line is connected to the pump electric wire.

3. A slime treatment device according to claim 1 or 2.

4. In the wiring chamber, the power line, the agitator electric wire, and the pump electric wire are connected.

3. A slime treatment device according to claim 1 or 2.

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