JP2012031694A - Rainwater permeation pit excavator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rainwater permeation pit excavator which allows a rainwater permeation pit to reach the ground having permeability by small-scale construction work and also which can be easily assembled and installed at a construction site.SOLUTION: The rainwater permeation pit excavator comprises; a crawler type traveling body 1; a support arm 2 projected on the traveling body 1; a slide base 3 supported by the support arm 2; a first cylinder member 4 built in the slide base 3; a frame structure 5 supported by the first cylinder member 4 and engaged to the slide base 3; a second cylinder member 6 built in the frame structure 5; a slider 7 supported by the second cylinder member 6 and engaged to the frame structure 5; a plane part 76 projected on the surface of the slider 7; a rotational driving body 8 held by the plane part 76; and a circular pipe body holding portion 9 holding the circular pipe body to the rotational driving body 8.

Description

The present invention relates to an excavation apparatus for a rainwater infiltration mine for laying a rainwater infiltration pipe.

  A conventional rainwater infiltration structure is a structure in which a permeation pipe is buried directly under a hole penetrating the bottom of a street wall (collecting water), and this permeation pipe is filled with quarry (Patent Document 1). ). However, this type of technology is appropriate if the soil directly under the street (water collecting basin) is permeable, but if there is a distance to the permeable soil, rainwater is sufficient. It had the problem of not penetrating.

  In addition, the groundwater underground drainage structure in the ground where the aquifer, impervious layer, and non-aquifer are accumulated sequentially from the ground surface, the pre-boring method or Nakabori method is applied to the above three layers of ground. There was a mine that reached the aquifer, and there was one that constructed a drainage pipe with ordinary concrete (range of aquifer and impermeable layer) and porous concrete (position of non-aquifer) (patent) Reference 2). However, because this technology is a structure for draining surface water whose groundwater level has risen further due to rainwater, snowmelt water, etc., to ground subsurface aquifers, such as in coastal dunes, where the groundwater level is high, The construction itself was so large that it could not be implemented as a drainage structure in urban areas such as streets.

JP 2006-138197 A (page 8-9, FIGS. 1 and 5-12) JP 2001-329602 A (page 3, FIG. 1 and FIG. 2)

  By the way, in recent years, when the amount of rainfall that exceeds the capacity of the sewage pipes due to concentrated heavy rain called so-called guerrilla heavy rain, rainwater accumulates on the road surface. When it flows into low-lying areas, it would cause damage such as flooding on the floor. Therefore, there is a need for a structure that can effectively infiltrate rainwater flowing into the streets into the ground. It was a difficult situation to install.

  In addition, there are many street mounds (collecting water) in the city area, but if the entire drilling rig is large, it is difficult to install a drilling device on the city street (collecting water). was there. Therefore, downsizing or weight reduction of the device has been desired.

  Further, when the working time at the construction site cannot be secured sufficiently, it has been desired to shorten the time for assembling and installing the excavator.

  The present invention has been made in view of the above-mentioned points, and the object thereof is to provide a drilling device capable of reaching a seepage pit to a ground having permeability by a small-scale construction and a construction work. It is an object of the present invention to provide a penetration drilling device that can be easily assembled and installed on site.

  Therefore, the present invention is for laying the rainwater permeation pipe by simultaneously press-fitting a circular pipe body having an inner diameter enough to allow the rainwater permeation pipe to be inserted therein and an auger screw rotatable inside the circular pipe body. An excavation apparatus for providing a rainwater infiltration mine, a crawler type traveling body on which a hydraulic pressure generator is mounted, a support arm protruding from the traveling body, a slide base supported by the support arm, and the slide base A first cylinder member built in the frame, a frame structure supported by one end of the first cylinder member so as to be able to advance and retreat, and engaged with the slide base to restrict the advancing and retreating direction, and A second cylinder member built in the frame structure, and a slide supported by one end of the second cylinder member so as to be able to advance and retreat, and engaged with the frame structure to restrict the advance / retreat direction. An idler, a flat surface projecting from the surface of the slider, a rotary drive body that is held by the flat surface portion and rotates the auger screw, and is arranged around the drive shaft of the rotary drive body, The gist of the rainwater infiltration mine excavator is characterized by comprising a circular pipe body holding part for holding the pipe.

According to the above configuration, the circular pipe body and the auger screw are press-fitted into the ground at the same time when the slider is lowered, and the earth and sand excavated by the auger screw is transported to the upper side of the circular pipe body to excavate the pit downward in the ground. Will be able to. The auger screw is given a rotational driving force by a rotational driving body supported on the upper part of the circular pipe body. The circular pipe body is fixed by holding the circular pipe body, and this circular pipe is fixed. The auger screw will be rotated on the basis of the body. Furthermore, the auger screw is lifted and lowered integrally with the circular pipe body via the rotary drive body. Further, by adopting a configuration having a crawler type traveling body, even a narrow road where a large vehicle cannot enter can be easily transported. At this time, in the above invention, the advancing / retreating direction of the slider may be parallel to the advancing / retreating direction of the frame structure.
In the above invention, the frame structure is formed of a long cylindrical member having a substantially C-shaped cross section, and is long on the outer surface of the pair of opposing side walls in the longitudinal direction of the cylindrical member. A frame structure having a first engaging rail and a second engaging rail parallel to the first engaging rail, the first engaging rail being engaged with the slide base. In addition, the second engagement rail may be configured to engage with the slider.

  According to the above configuration, the slider can be raised and lowered in two stages by providing two parallel engaging rails in the frame structure. Moreover, since the distance to ascend and descend can be provided longer than in the case where there is only one engagement rail, the seepage pit can be excavated to a deep position.

  Further, in the above invention, the substantially C-shaped opening of the cylindrical member constituting the frame structure is provided in a straight line in the longitudinal direction of the cylindrical member, and protrudes from the slider to form the first member. A connecting member connected to one end of the second cylinder member may be arranged in the opening.

  According to the above configuration, by arranging the connecting member in the opening, the cylinder member can be arranged inside the frame structure, and the size of the frame structure can be reduced.

  In each of the above inventions, the support arm is a support arm configured by a fixed arm that pivotally supports the vicinity of the lower portion of the slide base and a cylinder arm that supports the vicinity of the upper portion of the slide base. You can also.

  According to the above configuration, since the slide base can be tilted by extending and contracting the cylinder arm with the fixed arm as the central axis, the frame structure engaged with the slide base can also be tilted at the same time. . Thereby, it can convey to a construction site in the inclined state.

  In each of the above inventions, the frame structure may be a frame structure including a clamp portion that temporarily holds the circular pipe body.

  According to the above configuration, even when the circular pipe body is connected to another circular pipe body and has a long length, the circular pipe body can be temporarily held by the clamp portion. It can prevent being pressed into the ground with the body tilted.

  In each of the above inventions, the traveling body includes a driver's seat having an operation unit that operates the cylinder member, and a turning portion that can turn the driver's seat, and the support arm is disposed in front of the driver's seat. In addition, an outrigger may be disposed behind the driver seat.

  According to the above configuration, since the reaction force generated when the auger screw and the circular pipe body are excavated and press-fitted can be received by the outrigger, the standing auger screw and the circular pipe body are prevented from collapsing. Can be prevented.

  According to the present invention, a rainwater infiltration pit can be excavated at a construction site using a crawler-type traveling body in the vicinity of a street wall where a rainwater infiltration pipe should be embedded, which is sufficient for small-scale construction. Deep rainwater infiltration pits can be provided. In addition, since the frame structure, the slider, and the rotary drive body are integrally attached to the crawler type traveling body, assembly and installation work at the construction site is facilitated. In particular, since the auger screw and the circular pipe body are press-fitted by lowering the slider, the driving force can be a small hydraulic pressure generator and can be mounted on a crawler type traveling body.

It is a general view which shows embodiment of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the relationship between a support arm, a slide base, and a frame structure. It is explanatory drawing which shows the relationship between a support arm, a slide base, and a frame structure. It is explanatory drawing which shows the relationship between a frame structure, a 2nd cylinder member, a slider, and a rotational drive body. It is explanatory drawing which shows the relationship between a frame structure, a 2nd cylinder member, a slider, and a rotational drive body. It is explanatory drawing which shows the relationship between a rotary drive body, a circular pipe body, and an auger screw. It is explanatory drawing which shows the usage condition of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the usage condition of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the usage condition of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the usage condition of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the usage condition of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the usage condition of a rainwater penetration hole excavation apparatus. It is explanatory drawing which shows the processing method after a rainwater penetration hole excavation. It is explanatory drawing which shows the processing method after a rainwater penetration hole excavation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, an embodiment of a rainwater penetration mine excavator will be described. As shown in FIG. 1, the present embodiment includes a crawler type traveling body 1, a support arm 2 projecting from the traveling body 1, a slide base 3 supported by the support arm 2, and the slide base. 3, a first cylinder member 4 built in 3, a frame structure 5 supported by the first cylinder member 4 and engaged with the slide base 3, and a built-in frame structure 5. A second cylinder member 6, a slider 7 supported by the second cylinder member 6 and engaged with the frame structure 5, and a flat portion 76 projecting from the surface of the slider 7. And the rotary drive body 8 held by the flat surface portion 76 and the circular tube body holding portion 9 for holding the circular pipe body by the rotation drive body 8.

  As shown in FIG. 1, the crawler-type traveling body 1 is provided with a driver seat 12 on which a driver can ride, and an auger screw excavation operation or the like is performed from an operation portion 13 of the driver seat 12. Is. The driver's seat 12 is provided in a turning portion 14 provided at the upper part of the crawler, and can turn when the crawler is stopped. The crawler type traveling body 1 has a support arm 2 fixed to the front portion of a driver's seat 12 and an outrigger 11 provided on the other side. The outrigger 11 is arranged standing on the ground, and can receive a reaction force when the auger screw and the circular pipe are press-fitted by the outrigger 11 during excavation.

As shown in FIGS. 2 and 3, the support arm 2 uses flat fixed arms 21 and 22, and is erected at an appropriate interval at the front portion of the crawler type traveling body 1. Through holes 23, 24, 25, and 26 are formed at the ends of the fixed arms 21 and 22. Out of the through holes, the through holes 23 and 25 positioned in the front support the through holes 381 of the connecting portion 38 in the slide base 3, and the through holes 24 and 26 positioned in the rear are the cylinder arms 10. In order to support the through hole 104 of the cylinder bracket 102 in FIG.
2 and 3, the slide base 3 includes a slider base 31, first sliding contact portions 32, 33, and 34 that are in sliding contact with a first engagement rail 54 described later on the front surface side, and a support arm. 2 and connecting portions 37 and 38 for connecting to the cylinder arm 10 are provided.

  The slider base 31 is a substantially rectangular parallelepiped box-shaped member, and a hydraulic cylinder 41 as the first cylinder member 4 is disposed at the center of the upper end. The axial direction of the hydraulic cylinder 41 has a frame structure. It is erected in a state along the longitudinal direction of the body 5. At this time, one base end of the hydraulic cylinder 41 is built in and connected to the slider base 31, and a piston rod 42, which is the other base end, is a connecting portion provided on the back surface of the frame base 51 described later. 58. Therefore, the frame structure 5 can be moved up and down by operating the hydraulic cylinder 41.

  The first sliding contact portions 32, 33, 34 provided on the surface side of the slider base 31 have long sides of the slider base 31 so as to face first engagement rails 54, 55 described later. It is arranged along the side edge. Of the first sliding contact portions 32, 33, and 34, the main sliding contact portion 32 is provided so as to be in surface contact with the surface of the first engagement rail 54, and the sliding contact portion 32 is exclusively used as the first sliding contact portion 32. It is in sliding contact with the engagement rail 54. A slidable contact portion 33 slidably contacting the end portion of the first engagement rail 54 is projected from the end edge of the slidable contact portion 32, and the slider base 31 is further extended from the leading edge of the slidable contact portion 33. And a sliding contact portion 34 that is in sliding contact with the surface side of the first engagement rail 54.

  These first slidable contact portions 32, 33, and 34 have a substantially U-shaped cross section as a whole, and the first slidable contact portion 32 is in slidable contact with the surface of the first engagement rail 54. Both side edges and the back surface of one engagement rail 54 are in sliding contact with each other simultaneously. With such a configuration, the frame structure 5 that moves up and down by the hydraulic cylinder 41 can move along the first engagement rail 54 via the first sliding contact portions 32, 33, and 34. The slider base 31 is not detached from the first engagement rail 54.

  The connecting portion 37 is connected to the cylinder arm 10, and the through hole 371 of the connecting portion 37 is pivotally supported by the through hole 105 of the piston rod 103. Further, the connecting portion 38 is connected to the support arm 2, and the through hole 381 of the connecting portion 38 is pivotally supported by the through holes 23 and 25 of the support arm 2. Thereby, since the slide base 3 and the frame structure 5 can be inclined in the horizontal direction, the center of gravity of the entire excavator can be made lower than the standing state. Therefore, the excavator can be transported to the construction site while maintaining a stable weight balance.

  As shown in FIGS. 3 and 4, the frame structure 5 includes a frame base 51 formed in a substantially rectangular parallelepiped, and second engagement rails 52 projecting from both side surfaces of the frame base 51. 53 and first engagement rails 54 and 55 projecting in parallel with the second engagement rails 52 and 53. The frame base 51 is composed of a rectangular tube member whose main body is long, and has a long opening 56 along the longitudinal direction on one surface of the rectangular tube member. It is substantially C-shaped. The second engagement rail 52 is slidably installed with second sliding contact portions 72, 73, and 74, which will be described later, and the first engagement rail 54 is a first portion of the slide base 3 described above. The sliding contact portions 32, 33 and 34 are slidably installed. Moreover, the upper end of the frame base material 51 is opened, and the piston rod 63 of the second cylinder member 6 incorporated therein can be projected and retracted. Further, in the vicinity of the lower end of the frame base 51, a clamp portion 57 that temporarily holds a vinyl chloride pipe PP, which will be described later, is installed. The clamp part 57 is formed in a cylindrical shape, and the vinyl chloride pipe PP is inserted into the hollow part in the center. This vinyl chloride pipe PP is temporarily held in the clamp part 57 after being fixed to a circular pipe body holding part 9 described later.

  As shown in FIG. 5, the second cylinder member 6 is disposed inside the frame structure 5, and includes a hydraulic cylinder 61, a cylinder bracket 62, and a piston rod 63. The hydraulic cylinder 61 is erected in a state where the axial direction is along the longitudinal direction of the frame structure 5, and the base end thereof is connected by a quadrilateral member provided at the lower end of the frame base 51. Further, the piston rod 63 can protrude upward from the upper end of the frame base material 51, and its tip is connected to the upper end of the slider 7.

  As shown in FIGS. 4 and 5, the slider 7 includes a slider base 71 on which the rotary driving body 8 can be mounted on the surface side, a flat surface portion 76 projecting from the surface side of the slider base 71, and a side surface portion. 77 and 78 are provided, and second sliding contact portions 72, 73, and 74 that are in sliding contact with the above-described second engagement rail 52 on the back surface side are provided.

  The slider base 71 is a substantially rectangular plate-like member, and a connecting member 75 that protrudes toward the frame base material 51 is provided at the center of the upper end. The tip of the piston rod 63 of the hydraulic cylinder 61 can be connected to the through hole 751 formed at the tip of the connecting member 75. Therefore, the slider base 71 is moved up and down by operating the hydraulic cylinder 61 of the second cylinder member 6.

  Further, the second sliding contact portions 72, 73, and 74 provided on the back surface side of the slider base 71 are on the long side end of the slider base 71 so as to face the second engagement rail 52 described above. It is arranged along the edge. Of the second sliding contact portions 72, 73, 74, the main sliding contact portion 72 is provided so as to be in surface contact with the surface of the second engagement rail 52, and this sliding contact portion 72 is exclusively used as the second sliding contact portion 72. It is in sliding contact with the engagement rail 52. A slidable contact portion 73 slidably contacting the end portion of the second engagement rail 52 is projected from the end edge of the slidable contact portion 72, and the slider base 71 is further extended from the leading edge of the slidable contact portion 73. The sliding contact part 74 which has a surface parallel to this and contacts the back surface side of the 2nd engagement rail 52 is provided.

  These second slidable contact portions 72, 73, 74 have a substantially U-shaped cross section as a whole, and the second slidable contact portions 72, 73, 74 are in contact with the surface of the second engagement rail 52. Both side edges and the back surface of the second engagement rail 52 are in sliding contact with each other at the same time. With such a configuration, the slider base 71 (and the entire slider 7) that moves up and down by the second cylinder member 6 extends along the second engagement rail 52 via the second sliding contact portions 72, 73, and 74. The slider base 71 is not detached from the second engagement rail 52.

  Further, the rotary drive 8 mounted on the surface side of the slider base 71 is supported by a flat portion 76 on the surface of the slider base 71 as shown in FIG. A through hole 761 is formed at the center of the flat surface portion 76, and side surface portions 77 and 78 that are erected perpendicularly to the flat surface portion 76 are provided from both side edges of the flat surface portion 76. A through-hole 761 provided in the flat surface portion 76 allows a part of the rotary drive body 8 (a drive shaft and a circular tube body holding portion described later) to be inserted therethrough. In addition, screw holes 762 to 765 are screwed into the flat portion 76 at four locations around the through hole 761, and the rotation drive body 8 is partially rotated through the through hole 761. The drive body 8 can be fixed with a bolt or the like (see FIG. 6).

  As shown in FIG. 6, the rotary drive body 8 includes a motor unit 81 and an output unit 82. The motor unit 81 used here uses a so-called hydraulic motor as a drive source. The output portion 82 is provided with an engaging portion (referred to as a drive shaft in this embodiment) 821 for connecting the auger screw OS and transmitting the rotational driving force to the auger screw OS. The drive shaft 821 and the shaft portion of the auger screw OS can be connected by screw connection or spline connection. In the case of screw connection, a male screw is engraved on the drive shaft 821, and a female screw is engraved on the shaft portion of the auger screw OS, so that they can be connected by screwing them together. On the other hand, in the case of spline connection, the drive shaft 821 is the male side, the shaft portion of the auger screw OS is the female side, and the drive shaft 821 is inserted into the shaft portion. At this time, a connecting pin is inserted into the portion where the drive shaft 821 is inserted, and the connected state is maintained so as not to come off in the axial direction.

  The motor unit 81 and the output unit 82 are engaged with a gear (not shown) and function as a speed reducer by adjusting the gear ratio. By forming this speed reducer, the rotational speed of the motor part 81 is transmitted to the output part 82 while being reduced. As a result, the auger screw OS can be rotated by a small output motor. The hydraulic motor can generate a rotational driving force by supplying oil from a hydraulic device.

  A circular tube body holding portion 9 is integrally formed with the rotary driving body 8. The circular tube body holding portion 9 is generally cylindrical in shape, and is engraved at the end of the circular tube body PP so that the circular tube body PP can be connected to the tip (lower end) thereof. The male screw is engraved so that it can be screwed into the female screw portion. Further, the side wall of the circular tube holding part 9 is provided with a soil discharge hole 91 that is greatly opened.

  With the configuration described above, the upper ends of the auger screw OS and the circular pipe body (vinyl chloride pipe) PP can be connected to the output portion 82 of the rotary drive body 8. Since the rotary driving body 8 is fixed to the slider 7, the auger screw OS and the vinyl chloride pipe PP are integrated with the slider 7 as a result.

  Here, the auger screw OS used in the present apparatus will be briefly described. The auger screw OS includes a rotation shaft at the center and a helical screw portion around the rotation shaft. When the rotation shaft rotates, the screw portion. It can be conveyed according to the spiral shape. That is, when the auger screw OS rotates inside the vinyl chloride pipe PP, the earth and sand taken from the tip of the vinyl chloride pipe PP is conveyed by the screw portion of the auger screw OS. And when this conveyance direction is the back of the auger screw OS, the earth and sand taken in from the front-end | tip of the vinyl chloride pipe PP can be conveyed to the rear end of the vinyl chloride pipe PP.

  Since the present embodiment is configured as described above, as shown in FIG. 7, the slider base 71 is raised by the cylinder operation of the cylinder member 4 arranged inside the frame structure 5. The slider 7 can be raised. By sufficiently raising the slider base 71 (as a result, the slider 7), a space enough to connect the vinyl chloride pipe PP and the auger screw OS can be formed between the ground surface and the slider 7. At this time, if the space is insufficient, the space can be additionally secured by raising the slide base 3. Therefore, this space is used to connect the vinyl chloride pipe PP and the auger screw OS to the circular tube body holding portion 9 and the drive shaft 821. Next, the motor portion 81 of the rotary drive 8 is started to rotate the auger screw OS disposed inside the vinyl chloride pipe PP, and the second cylinder member 6 is operated by the cylinder while maintaining this state. The vinyl chloride pipe PP and the auger screw OS can be pressed into the ground by lowering the slider 7.

  Then, by pressing the slider 7 up and down a plurality of times, it is possible to realize press-fitting for a desired length. Here, when the slider 7 is moved up and down, the operation of the rotary driving body 8 is stopped when the first descent is completed, and the press-fitted vinyl chloride pipe PP and auger screw OS are connected to the rotary driving body 8. After that, the slider 7 is raised and returned to the original position. After the slider 7 is lifted, the vinyl chloride pipe PP and the auger screw OS to be added are connected between the rotary drive body 8 and the press-fitted vinyl chloride pipe PP and the auger screw OS, and the rotary drive body 8 is operated. Then, if the slider 7 is lowered, the press-fitting can be continued.

  Next, usage modes of the present embodiment will be described. Since the rainwater penetration mine excavator of this embodiment is configured as described above, excavation work is performed with the rainwater penetration mine excavator installed at a predetermined position. Moreover, after excavating a rainwater permeation pit using the above-mentioned vinyl chloride pipe PP and auger screw OS, the rainwater permeation pipe is embedded using the vinyl chloride pipe PP (see FIG. 7).

  Therefore, first, the crawler type traveling body 1 is moved so as to match the position where the rainwater permeation pipe should be embedded, and the inclined frame structure 5 is made perpendicular to the ground surface by raising the cylinder arm 10. Install the rainwater infiltration mine burial device. If it demonstrates in detail, the front of the support arm 2 will be pivotally supported with the connection part 38 of the slide base 3, and the slide base 3 will be rotatable centering | focusing on this axis | shaft. Since the slide base 3 is slidably attached to the frame structure 5, the frame structure 5 can be erected at the same time when the inclined slide base 3 is erected by the cylinder arm 10. It is. Then, the vinyl chloride pipe PP is inserted into the clamp portion 57 of the frame structure 5 and the through hole 761 of the slider 7 so that the longitudinal direction is set up and down.

  Subsequently, the auger screw OS is inserted into the vinyl chloride pipe PP, and the rear end (upper end) is coupled to the drive shaft 821 of the output unit 82. The output portion 82 is connected to the rear end (upper end) of the vinyl chloride pipe PP at the same time as the rear end of the auger screw OS is connected, and the installation of each member is completed (see FIG. 6). In the initial installation state, the slider 7 is in the raised position.

  After the installation is completed as described above, the rotary drive body 8 is started and the slider 7 is lowered as shown in FIG. As the slider 7 descends, the auger screw OS excavates the earth and sand of the ground, and the earth and sand generated at that time can be conveyed upward in the vinyl chloride pipe PP by the auger screw OS. In addition, since the circular pipe body holding part 9 to which the rear end (upper end) of the vinyl chloride pipe PP is connected in the output part 82 is provided with a soil discharge hole 91 for soil removal, Can be discharged to the outside of the vinyl chloride pipe PP.

  In the state where the press-fitting is started, since the vinyl chloride pipe PP and the tip (lower end) of the auger screw OS reach the bottom of the street LM, the vinyl chloride pipe PP and the auger screw OS to be initially press-fitted. Since the press-fitting range is a part of the whole, press-fitting for one piece in the above description means a range excluding the depth of the street LM. Further, in order to crush the bottom surface of the street LM, the auger screw OS has a drilling cutter HC at the tip (see FIG. 7). This drilling cutter HC also enables press-fitting in hard ground.

  Following the above steps, as shown in FIG. 9, in order to press-fit the vinyl chloride pipe PP and the auger screw OS to a deeper position, new vinyl chloride pipes of the same kind are added to the already-fitted vinyl chloride pipe PP and auger screw OS. PP and auger screw OS are added, and press-fitting is repeated. Here, in order to add the new vinyl chloride pipe PP and the auger screw OS, the rear end (upper end) of the vinyl chloride pipe PP and the auger screw OS and the rotary drive body 8 (the circular pipe body holding portion 9 and the drive shaft 821). Need to be disconnected.

  Therefore, the connection with the vinyl chloride pipe PP is released. However, since the vinyl chloride pipe PP and the circular tube body holding portion 9 are screwed together, the disengagement method only needs to release the screwed state. . Further, if the connection between the drive shaft 821 and the auger screw OS is spline connection, the connection state can be released by pulling out the connection pin and raising the drive shaft 821.

  Thus, after removing the rotary drive body 8 from the vinyl chloride pipe PP and the auger screw OS, a new vinyl chloride pipe PP and an auger screw OS are installed at the rear end (upper end) of the press-fitted vinyl chloride pipe PP and the auger screw OS. Connect. Therefore, by raising the slider 7, it is possible to provide a space in which the vinyl chloride pipe PP and the auger screw OS to be connected next can be added.

  That is, the slider 7 is moved up and down by the second cylinder member 6 (see FIG. 5). The stroke length of the cylinder member 6 is the length of each of the vinyl chloride pipe PP and the auger screw OS. When the slider 7 is lowered to the lower limit position and is separated from the previous vinyl chloride pipe PP and the auger screw OS and raised to the upper limit position, the vinyl chloride pipe PP to be connected next and A space where an auger screw OS can be added is secured.

  After the slider 7 is raised to the upper limit position in this way, the vinyl chloride pipe PP and the auger screw OS to be connected next are added. The connection at this time is the screw thread of the vinyl chloride pipe PP. The auger screw OS can be performed by inserting the shaft portion into the drive shaft 821 and inserting the connecting pin. Then, after connecting the new vinyl chloride pipe PP and the auger screw OS, it is possible to continue the press-fitting by connecting the rotary driving body 8 to the rear end (uppermost end) again.

  Subsequently, as shown in FIG. 10, a new vinyl chloride pipe PP and an auger screw OS can be press-fitted by operating the rotary drive 8 and lowering the slider 7. Further, when adding a vinyl chloride pipe PP and an auger screw OS, the above is repeated to excavate a rainwater infiltration mine reaching a desired depth, and at the same time, the vinyl chloride pipe PP is embedded in the infiltration mine. (FIG. 11). In FIG. 11, a desired depth is obtained when the press-fit length L1 corresponding to one vinyl chloride pipe PP is reached.

  When the vinyl chloride pipe PP and the auger screw OS are press-fitted to a desired depth, the press-fitting of the vinyl chloride pipe PP and the auger screw OS is stopped, the auger screw OS is removed, and the vinyl chloride pipe PP is left. (FIG. 12). In order to remove the auger screw OS, the auger screw OS alone is pulled out while maintaining the vinyl chloride pipe PP as it is by pulling it out vertically upward. At this time, by removing the rotary drive body 8 from the slider 7, the through hole 761 of the slider 7 can be opened. If the through hole 761 is allowed to pass, the auger screw OS can be pulled out. At this time, since the inside of the vinyl chloride pipe PP is hollow (the excavated earth and sand is also discharged), the rainwater permeation pipe WP is inserted into the hollow inside to reach a predetermined depth. The rainwater permeation pipe WP can be installed (FIG. 13 (a)).

  At this time, the rainwater permeation pipe WP to be inserted uses a perforated pipe having a drainage through-hole formed at least in the peripheral portion near the tip. This is because even a normal vinyl chloride pipe functions as a permeation pipe, but if the ground near the tip of the laying area is a permeable ground, the permeation efficiency to the surrounding ground can be improved by using a perforated pipe.

  Following the above process, the inside filter IF is filled in the rainwater permeation pipe WP (FIG. 13B). As the filling range of the internal filter IF is wider, the filter effect is improved, so that the inner filter IF is almost entirely filled. As the filter, an adsorbent capable of adsorbing and removing harmful heavy metals, oil, COD components and the like in rainwater is used. For example, a long fiber nonwoven fabric can be used. The adsorbent is composed of inorganic or organic particulates or fibers, and is integrated into a cylindrical net to form a columnar internal filter IF as a whole. The cylindrical net is preferably configured to be in close contact with the inside of the rainwater infiltration pipe WP, and the material is preferably a material having corrosion resistance such as plastic or stainless steel. Also, for the integration of the adsorbent and the cylindrical net, the adsorbent having individual adsorbing performance such as harmful heavy metal adsorbent, oil adsorbent and COD component adsorbent is enclosed simultaneously. it can. At this time, these individual adsorbents can be encapsulated in layers, but can also be encapsulated after mixing the whole.

  Further, the vinyl chloride pipe PP is pulled out and removed, and the periphery thereof is filled with an external filter OF (FIG. 14A). In the state in which the vinyl chloride pipe PP is pulled out, a gap of the same thickness as the thickness of the vinyl chloride pipe PP is formed between the rainwater infiltrating pipe WP and the ground, so an external filter OF is inserted into this gap. To do. Here, the external filter OF can be easily inserted by making it cylindrical as shown in the figure, but is not limited to such a shape.

  As described above, the rainwater infiltration pipe WP can be buried deeply underground from the street LM, and the inner filter IF and the outer filter OF can be filled inside (FIG. 14B). ). The external filter OF is used when there is a gap between the rainwater permeation pipe WP and the ground when the vinyl chloride pipe PP is removed. For example, when the vinyl chloride pipe PP is removed on a soft ground, the outer filter OF is used as a gap. If this is not maintained, it is not used.

  The embodiment of the present invention is as described above, but various modes can be taken without departing from the spirit of the present invention. For example, in the present embodiment, the rotational drive body 8 has been described as having a reduction gear formed by meshing a gear between the motor portion 81 and the output portion 82. However, the motor portion 81 generates a sufficient torque. As long as it has an output, an integrated rotary drive without a reduction gear can be used. In principle, a hydraulic motor is used as the drive source of the motor unit 81, but this may be an electric motor.

  Further, in the description of the above usage pattern, it has been described that the internal filter IF is disposed inside the rainwater infiltration pipe WP, and the external filter OF is disposed outside, but gravel instead of this internal filter (as an internal filter) is used. Alternatively, dry sand may be used instead of the external filter (as an external filter). These selections are made in consideration of the infiltration state of water in the ground.

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Support arm 3 Slide base part 4 1st cylinder member 5 Frame structure 6 2nd cylinder member 7 Slider 8 Rotating drive body 9 Circular pipe body holding part 10 Cylinder arm 11 Outrigger 12 Driver's seat 13 Operation part 14 Turning Portions 21, 22 Fixed arms 23, 24, 25, 26 Through holes 31, 71 Slider bases 32, 33, 34 First sliding contact portions 37, 38 Connection portions 41, 61, 101 Hydraulic cylinders 42, 63, 103 Piston rods 51 Frame base materials 52, 53 Second engagement rails 54, 55 First engagement rail 56 Opening portion 57 Clamping portion 58 Connection portion 62, 102 Cylinder brackets 72, 73, 74 Second sliding contact portion 75 Connection member 76 Plane portion 77, 78 Side surface portion 81 Motor portion 82 Output portion 91 Drain hole 104, 105 Through hole 371, 381 Through hole 75 1 Through-hole 761 Through-hole 762, 763, 764, 765 Screw hole 821 Engagement part (drive shaft)
HC Drilling Cutter LM Street Masu PP PP PVC pipe OS Auger screw WP Permeation pipe IF Internal filter OF External filter L1 Press fit length

Claims (7)

Drilling to provide a rainwater infiltration pit for laying the rainwater infiltration pipe by simultaneously press-fitting a circular pipe body having an inner diameter that allows the rainwater infiltration pipe to pass through and an auger screw that can rotate inside the circular pipe body. A crawler-type traveling body on which a hydraulic pressure generator is mounted, a support arm protruding from the traveling body, a slide base supported by the support arm, and a first built in the slide base Cylinder member, a frame structure supported by one end of the first cylinder member so as to be able to advance and retreat, and engaged with the slide base to restrict the advancing and retreating direction, and incorporated in the frame structure A second cylinder member, a slider that is supported by one end of the second cylinder member so as to be able to advance and retreat, and that engages with the frame structure to restrict the advancing and retreating direction, and the slider. A flat portion projecting from the surface of the rotor, a rotary drive member that is held by the flat portion and rotates the auger screw, and a circle that is disposed around the drive shaft of the rotary drive member and holds the circular pipe member A rainwater infiltration mine excavator characterized by comprising a tubular body holding part. The rainwater infiltration digging apparatus according to claim 1, wherein the advance / retreat direction of the slider is parallel to the advance / retreat direction of the frame structure. The frame structure is constituted by a long cylindrical member having a substantially C-shaped cross section, and a first long side in the longitudinal direction of the cylindrical member is formed on the outer surface of the pair of opposing side walls. A frame structure provided with an engagement rail and a second engagement rail parallel to the first engagement rail, wherein the first engagement rail engages with the slide base; The rainwater infiltration digging apparatus according to claim 1, wherein the second engagement rail is engaged with the slider. An opening having a substantially C-shaped cross section of the cylindrical member constituting the frame structure is provided in a straight line in the longitudinal direction of the cylindrical member, and protrudes from the slider to be one end of the second cylinder member. The rainwater infiltration digging apparatus according to claim 3, wherein a connecting member connected to the inside is disposed in the opening. 5. The support arm according to claim 1, wherein the support arm is a support arm configured by a fixed arm that pivotally supports the vicinity of the lower portion of the slide base portion and a cylinder arm that supports the vicinity of the upper portion of the slide base portion. The rainwater infiltration mine excavator according to claim 1. The rainwater infiltration digging apparatus according to any one of claims 1 to 5, wherein the frame structure is a frame structure including a clamp portion that temporarily holds the circular pipe body. The traveling body includes a driver's seat having an operation portion for operating the cylinder member, and a turning portion capable of turning the driver's seat, and the support arm is disposed in front of the driver seat, and the driver's seat The rainwater infiltration digging apparatus according to any one of claims 1 to 6, wherein an outrigger is disposed at the rear of the mine.

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