JP3773135B2 - Earth discharging method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention drills a holeEarth removal methodEspecially suitable for drilling relatively small holes, such as holes for building utility polesEarth removal methodAnd device.
[0002]
[Prior art]
  Electric poles are roughly classified into single pillars in which only one business company constructs cables (for example, communication cables or power cables) and common pillars in which plural business companies jointly construct cables. And now, the drilling of the column hole accompanying the column work to build the co-post column is performed as follows.
[0003]
  The exploration rod is used to investigate whether there is a buried object such as a gas pipe in the planned pillar location (with a diameter of about 500 mm). And when there is no buried object at the planned pillar location, excavation to a predetermined depth with an earth auger equipped in a digging pillar car (hereinafter referred to as a holed car), and there is a buried object In some cases, manual excavation is performed using a double excavator or the like.
[0004]
  On the other hand, when building a single pillar, excavation is mostly done by hand for the following reasons.
(1) The excavation depth is relatively shallow at 2 m or less, so the amount of excavated soil is small and excavation is possible by hand.
(2) Exploration of buried objects with exploration rods is less accurate than time consuming, and is faster by manual digging that does not require exploration.
(3) Since the number of pillars per day is small, there is no need to arrange for a hole-built car.
[0005]
[Problems to be solved by the invention]
  As mentioned above, conventional pillars have been excavated by hand digging, and work efficiency is poor and drilling is performed in narrow holes.Earth removal workIs not easy. In addition, when drilling a column hole for a co-axial column using an earth auger, a hole for an earth auger with a depth of about 80 cm should be used in order to avoid breakage and removal of the pavement and damage to a small-sized pipe existing near the surface. It is necessary to dig by digging. When using an earth auger, the earth auger may jump out of the hole, so-called “escape”, and there is anxiety in terms of safety. Moreover, the excavation by the earth auger also collapses the earth and sand around the planned pillar location, so that the excessive excavation becomes large and the excavation efficiency is poor, and the backfilling operation is not easy.
[0006]
  The present invention was made to eliminate the disadvantages of the prior art.Sediment can be discharged regardless of manual digging work.The purpose is to improve work efficiency.
[0007]
[Means for Solving the Problems]
  Exploration of buried objects with exploration rods is carried out on the columns of co-located columns, etc. The exploration with this exploration rod involves drilling high-pressure water from the tip of the exploration rod at the periphery of the planned pillar. However, the exploration rod is propelled underground, and the presence or absence of the buried object is judged by whether the exploration rod can be propelled. And the exploration by this exploration rod is performed so that the several places of the peripheral part of a building pillar planned place may be along a circumference. Therefore, one or a plurality of exploration rods can be easily excavated while being swung in a horizontal plane at the peripheral portion of the planned excavation area, or by excavating the excavation holes by the plurality of exploration rods in a continuous manner. Can be formed.
[0008]
  The present invention uses a loop excavation groove by exploration of an embedded object in the above-mentioned building column work or the like, and in order to achieve the above object, the earth removal method according to the present invention includes a peripheral portion of a planned excavation area. Is excavated in a loop shape, and then drains the earth and sand in the planned excavation area surrounded by the loop-shaped excavation groove, and the cylindrical main body is arranged in the excavation groove excavated in the loop shape, Of the tubular bodyIn the inner peripheryMultiple support claws provided in the circumferential directionHold the tip of theThe cylindrical body is inserted into the earth and sand in the cylindrical body.The tip ends of the plurality of support claws are rotated with the lifting ofThe supported earth and sand are pulled out together with the cylindrical main body.
[0010]
  And the first according to the present inventionEarth removal equipmentIs provided along the inner circumferential surface of the cylindrical main body and the cylindrical main body arranged in the loop excavation groove, and is pulled out to the upper part of the cylindrical main body to pull the end portion, thereby Cutting wire for cutting earth and sand,The earth and sand that is connected to the drawing wire and is housed in the cylindrical main body so as to be capable of being drawn out along the peripheral surface, and the cutting wire is cut by pulling the drawing wire drawn from the cylindrical main body. With earth and sand receiving sheet placed in the cutting partIt has composition which has.
[0011]
  Furthermore, the second earth removing device according to the present invention is provided with a plurality of cylindrical main bodies disposed in the loop excavation groove and in the circumferential direction in the inner peripheral portion of the cylindrical main body,When the cylindrical body is inserted into the excavation groove, the tip is held in a protruding state, and when the cylindrical body is pulled up, the tip isThe cylindrical main body engageable with earth and sand in the cylindrical main bodyInside the cylindrical bodyIt has the structure which has the support nail | claw which supports earth and sand. The support claws can be provided in a plurality of stages in the axial direction of the cylindrical main body.
[0012]
[Action]
  The first configuration according to the present invention configured as described above.Earth removal equipmentIn, for example, the periphery of a planned excavation area such as a planned pillar location is excavated in a loop shape to investigate an embedded object, a cylindrical body is arranged in the loop excavation groove, and a cutting wire is pulled on the ground. Cutting the earth and sand in the throttle and cylindrical body. Thereafter, a sand receiving member made of, for example, a sheet or the like to which a wire or the like is connected is placed on the earth and sand cutting portion where the wire is pulled on the ground and pulled out from the cylindrical main body and cut by the cutting wire. When the crane is lifted together with the cylindrical main body from the ground and the sediment receiving member is released above the truck, the excavated sediment in the cylindrical main body is loaded on the truck. As a result, it is possible to perform excavation of the planned excavation area and loading of the earth and sand into the truck at one time without depending on the manpower.Earth removal workEfficiency can be increased.
[0013]
  In addition, it is possible to excavate and remove the pillar hole only with the crane-equipped truck that is used in the normal operation without using the pillar car, and the excavation can be easily performed. And since only the range and depth of exploration of buried objects are excavated, even if there are buried objects such as gas pipes close to the planned excavation area, there is no risk of damaging them,Earth removal workCan be done easily and safely. In addition, unlike excavation by the earth auger, excavation efficiency can be increased because only necessary portions are excavated without excessive excavation.
[0014]
  Further, according to the present inventionEarth removal methodOr secondEarth removal equipmentIs particularly suitable for excavating highly self-supporting earth and sand such as loam layers.Tubular bodyPlace. AndTubular bodyPull upTubular bodyA plurality of support claws provided rotatably on the inner periphery of theTubular bodyRotate by engaging with the earth and sand inside,Tubular bodyProtruding from the soil and inserted into the earth. So, furtherTubular bodyThe support claws inserted in the earth and sandTubular bodyIn support of the earth and sand, cut from the earth and sand below it,Tubular bodyTogether with the ground. Accordingly, the first aspect of the present inventionEarth removal equipmentThe same effect can be obtained. Moreover, the second aspect of the present inventionEarth removal equipmentIn, because it does not require a cutting wire or the like for cutting the earth and sand, the structure can be simplified and no special earth and sand cutting operation is required.Earth removal workCan be simplified. In addition, when a plurality of supporting claws are provided,Tubular bodyThe support of the earth and sand can be made more reliable, and deeper holes can be excavated by one excavation operation.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  According to the present inventionEarth removal methodPreferred embodiments of the apparatus will be described in detail with reference to the accompanying drawings.
[0016]
  FIG. 1 relates to a first embodiment of the present invention.Earth removal equipmentFIG. In FIG.Earth removal equipment10 has the cylindrical main body 12 which inserts and arrange | positions in the loop-shaped excavation groove which excavated circularly the peripheral part of the excavation plan area | region which is not shown in figure. The loop excavation groove is, for example, as shown in FIG. In other words, when building a co-column, use a buried object exploration device with exploration rods attached to both sides of an arc-shaped support that is roughly divided into four circles. Drilling into. For this reason, the excavation groove 60 includes a ring groove portion 62 and eight circular exploration rod insertion holes 64 communicating with the ring groove portion 62 inside the ring groove portion 62.
[0017]
  The cylindrical main body 12 disposed in the ring groove portion 62 of the excavation groove 60 formed in this way is formed of, for example, a steel pipe, and a plurality of suspension fittings 16 are attached to the upper end surface 14 at equal intervals in the circumferential direction. By using these hanging brackets 16 with a crane or the likeEarth removal equipment10 can be lifted and suspended. Further, a wedge portion 18 having a triangular cross section is provided at the lower end of the cylindrical main body 12, and the wedge portion 18 is inserted into the bottom of the excavation groove.Earth removal equipment10 can be fixed.
[0018]
  In the lower inner peripheral surface of the cylindrical main body 12, there is a wire arrangement groove 22 in the circumferential direction in which an area surrounded by the excavation groove 60, that is, an earth and sand cutting wire 20 for cutting the earth and sand inside the cylindrical main body 12 is arranged. 2 (see FIG. 2). By placing the earth and sand cutting wire 20 in the wire arrangement groove 22, when the cylindrical main body 12 is inserted into the excavation groove 60, the earth and sand cutting wire 20 comes into contact with the earth and sand. The position is not shifted. And the earth and sand cutting wire 20 arrange | positioned at the wire arrangement | positioning groove | channel 22 was fixed along the axial direction to the internal peripheral surface of the cylindrical main body 12, as each of the both-side standing-up part 20a, 20b showed in FIG. The wire pipes 24 and 26 arranged in the exploration rod insertion hole 64 of the excavation groove 60 are passed through and pulled out above the cylindrical main body 12. That is, as shown in FIG. 3, the earth and sand cutting wire 20 includes the rising portions 20 a and 20 b inserted through the wire pipes 24 and 26 in the initial state where the cylindrical body 12 is disposed in the excavation groove, It consists of a loop portion 20c formed in a horizontal loop shape so that it can be placed in the wire placement groove 22 at the lower ends of the portions 20a, 20b.
[0019]
  The wire pipes 24 and 26 are arranged close to each other, and by pulling both ends (rise portions) 20a and 20b of the earth and sand cutting wire 20 exposed from the wire pipes 24 and 26, a loop of the cutting wire 20 is obtained. The portion 20c is squeezed to reduce the diameter so that the earth and sand in the cylindrical main body 12 can be cut. It is possible to pass the rising portions 20a and 20b of the earth and sand cutting wire 20 through the same pipe, but by passing the rising portions 20a and 20b through separate wire pipes 24 and 26, the entanglement between the rising portions 20a and 20b can be prevented. The earth and sand can be cut easily and reliably.
[0020]
  The cylindrical main body 12 is provided with a sheet storage portion 28 for storing a sediment receiving sheet, which is a sediment receiving member whose details will be described later. As shown in the detailed cross-sectional view of FIG. 2B, the sheet storage portion 28 is formed with a recess 30 on the inner peripheral surface side of the cylindrical body 12, and the front side of the recess 30 (the cylindrical body 12). By attaching the shielding plate 34 to the inner peripheral surface side via a spacer 32 with screws or the like so as to be detachable, a space capable of storing the earth and sand receiving sheet is secured and provided close to the upper side of the wire arrangement groove 22. It is. The sheet storage unit 28 is provided with a drawer port 36 in the lower part, and the earth and sand receiving sheet stored in the sheet storage unit 28 through the drawer port 36 is cut into the earth and sand cutting unit cut by the earth and sand cutting wire 20. It can be pulled out and placed. In addition, the spacer 32 is arrange | positioned along the four corners and both sides of the shielding board 34, for example, which does not have trouble in storage and drawing-out of the earth and sand receiving sheet.
[0021]
  As shown in FIG. 4, the earth and sand receiving sheet 38 is formed in a square having an appropriate width, for example, a width of 1/2 to 3/4 of the inner diameter of the cylindrical main body 12, and both sides thereof are a pair. The holding wires 40 and 42 are fixed. Further, the lower end portion of the earth and sand receiving sheet 38 is fixed to an intermediate portion of the drawing wire 44 for pulling out the earth and sand receiving sheet 38 from the lower sheet storage portion 28. The drawing wire 44 is arranged in a wire arrangement groove 46 formed in the circumferential direction of the cylindrical main body 12 so as to be continuous with the drawing port 36 of the sheet storage unit 28 in an initial state in which the earth and sand receiving sheet 38 is stored in the sheet storage unit 28. Arc portion 44a, and rising operation portions 44b and 44c bent upward from both ends of the arc portion 44a. In addition, when the upper edge of the earth-and-sand receiving sheet 38 is fixed to a wire and both ends of the wire are connected to the holding wires 40 and 42, the earth and sand can be received firmly when receiving the earth and sand described later.
[0022]
  The holding wires 40 and 42 to which the side portions of the earth and sand receiving sheet 38 are fixed are pulled out from the opening 47 (see FIG. 2) provided in the upper portion of the sheet storage portion 28 to the inside of the cylindrical main body 12, and as shown in FIG. In addition, the wire pipes 48 and 50 arranged in the exploration rod insertion hole 64 of the excavation groove 60 are passed through and pulled out above the cylindrical main body 12. These wire pipes 48 and 50 are fixed to the inner peripheral surface of the cylindrical main body 12 above both edges of the sheet storage portion 28 with substantially the same interval as the width of the earth and sand receiving sheet 38. Further, as shown in FIG. 1, one rising operation portion 44 b of the drawing wire 44 passes through the wire pipe 24 through which the rising portion 20 a of the earth and sand cutting wire 20 is inserted, and is placed on the upper portion of the cylindrical body 12. Pulled out. Further, the other start-up operation portion 44 c passes through a Y pipe 52 provided in parallel with the wire pipe 24 on the inner peripheral surface of the cylindrical main body 12, and is pulled out to the upper portion of the cylindrical main body 12. The distance between the wire pipe 52 and the wire pipe 24 is substantially the same as the distance between the wire pipes 48 and 50, and is provided symmetrically with the wire pipes 48 and 50, that is, on the side facing the sheet storage portion 28. .
[0023]
  The operation of the embodiment configured as described above is as follows.
  First, a buried object is explored while excavating a peripheral portion of a planned excavation area (for example, a planned position of a column with a column) into a circular loop with an exploration rod. As described above, the exploration of the buried object is performed, for example, by holding the exploration rods on both sides of the arc-shaped support, and jetting high-pressure water from the lower portions of the support and the exploration rod to about 1/4 of the circumferential direction of the excavation groove 60. Drilling and exploration rod propulsionIs possibleWhether or not there is an embedded object is determined based on whether or not it is present. And if 1/4 of the circumferential direction of the excavation groove 60 is excavated to a predetermined depth, the adjacent portions are excavated sequentially in the same manner. Therefore, the ring-shaped excavation groove 60 can be formed by four excavations. In addition, a plurality of exploration rods may be arranged on the circumference of the loop, and excavation and exploration may be performed by jetting high-pressure water from the tip of the exploration rod while rotating this in a horizontal plane. And if the circular excavation groove 60 was formed to the predetermined depth, the earth-and-sand receiving sheet 38 and the earth-and-sand cutting wire 20 were arrange | positioned in the cylindrical main body 12.Earth removal equipment10 is lifted by a vehicle-mounted crane or the like via the hanging metal fitting 16 and inserted and placed in the excavation groove 60. Thereafter, the rising portions 20a and 20b of the earth and sand cutting wire 20 are pulled by hand or a winch, and the loop portion 20c of the earth and sand cutting wire 20 is drawn out from the wire arrangement groove 22 of the cylindrical main body 12 to reduce the diameter. Cut the earth and sand inside.
[0024]
  Next, the rising operation portions 44b and 44c of the drawing wire 44 are pulled, the arc portion 44a of the drawing wire 44 is slid into the earth and sand cutting portion cut by the earth and sand cutting wire 20, and the earth and sand receiving sheet 38 is removed from the sheet storage portion 28. The drawer is placed at the earth and sand cutting part so as to cross the cylindrical main body 12. Then, the earth and sand receiving sheet 28 is lifted together with the cylindrical main body 12 by the on-board crane or the like via the sheet holding wires 40 and 42 and the lead wire 44 and pulled out from the ground, and the earth and sand in the cylindrical main body 12 is excavated.Earth removal equipment10 is moved to the upper side of the track together with 10 to open the operation portions 44b and 44c of the lead wire 44 and load excavated earth and sand on the track. In addition, although part of the earth and sand in the cylindrical main body 12 protrudes from the earth and sand receiving sheet 38, it can be excavated integrally without collapsing due to the adhesiveness of the earth and sand.
[0025]
  As described above, in the embodiment, not only can the excavated soil be excavated, but also the excavated sediment can be excavated not only by the operation of the on-board crane and the wire of the crane-equipped truck used in the normal operation, but also the excavated sediment. Can be loaded onto the truck,Earth removal workEfficiency is improved and manual digging work can be eliminated. In addition, since only the range and depth of exploration of the buried object are excavated, there is no risk of damaging the buried object such as a gas pipe around the planned excavation area, and an earth auger is used. Safer excavation. Moreover, the earth and sand cut off from the periphery by the exploration of the buried object is put into the cylindrical main body 12 and pulled out as it is, and there is no extra excavation, and only necessary portions are excavated, so that efficient excavation is performed. Can do. In the embodiment, since the earth and sand receiving sheet 38 is arranged at the cut portion cut by the earth and sand cutting wire 20, damage such as fraying of the earth and sand receiving sheet 38 can be suppressed.
[0026]
  In the above embodiment, the case where the cylindrical main body 12 is circular has been described, but the shape of the cylindrical main body 12 may be other shapes such as a quadrangle. Moreover, in the said embodiment, although the excavation of the hole for building pillars was demonstrated, it is not limited to this, It can apply also to excavation of a horizontal hole or an oblique hole. Further, in the above-described embodiment, the case where the cylindrical main body 12 is disposed in the excavation groove formed during the exploration of the buried object with the exploration rod has been described. However, the loop excavation groove may not be used for exploring the buried object. . Then, a cover or the like for protecting the sheet may be attached to the edge of the earth and sand receiving sheet 38.
[0027]
  FIG. 6 shows another embodiment of the earth and sand receiving sheet. The earth and sand receiving sheet 66 according to this embodiment is stretched in a fan shape as shown in FIG. And as shown in the figure (2), the earth-and-sand receiving sheet | seat 66 has connected the center part of the lower end to the circular arc part 44a of the drawer | draw-out wire 44. As shown in FIG. Moreover, the earth and sand receiving sheet 66 has both side edges and lower end edges attached to the rising portions 68 a and 68 b and the arc portion 68 c of the holding wire 68. Further, the earth and sand receiving sheet 66 is provided with a connecting wire 70 connecting the rising portions 68a and 68b of the holding wire 68 to each other at the upper edge, and the earth and sand receiving sheet is placed at an appropriate position of the connecting wire 70. Holding wires 72, 74, 76, 78 for pulling up 66 together with the cylindrical body 12 are connected.
[0028]
  On the other hand, as shown in FIG. 6 (1), the cylindrical main body 12 has wire pipes 24, 26, 48, 50, provided on the inner peripheral surface corresponding to the eight exploration rod insertion holes 64 of the excavation groove 60. 52, 80, 82 and 84 are fixed. Then, as shown in FIG. 7, one rising portion 20 a of the earth and sand cutting wire 20 and one rising operation portion 44 of the drawing wire 44 are passed through these wire pipes 24. The other rising portion 2 b of the earth and sand cutting wire 20 and the other rising operation portion 44 c of the drawing wire 44 are inserted through the cable. The wire pipes 80 and 52 are passed through the rising portions 68a and 68b of the holding wire 68, and the wire pipes 48, 82, 50 and 84 are passed through the holding wires 72, 74, 76 and 78, respectively. .
[0029]
  The earth and sand receiving sheet 66 configured in this manner is pulled out from the sheet storage portion 28 and pulled up from the sheet storage portion 28 as shown in FIG. 6 (1) when the rising operation portions 44b and 44c of the drawing wire 44 are pulled. The fan is stretched inside. For this reason, the area which supports the earth and sand in the cylindrical main body 12 becomes large, and even if it is a case where earth and sand are low viscosity like sandy, the amount of earth and sand spilling can be decreased very much.
[0030]
  FIG. 8 relates to the second embodiment.Earth removal equipmentThe cross section of is schematically shown. According to this embodimentEarth removal equipment90 has the cylindrical main body 12 inserted and arranged in the ring groove 62 of the excavation groove 60. Further, eight pipes 92 are provided on the inner peripheral portion of the cylindrical main body 12 in parallel with the axial direction of the cylindrical main body 12 corresponding to the respective exploration rod insertion holes 64 of the excavation grooves 60. These pipes 92 are attached with support claws 94 for cutting the earth and sand in the cylindrical main body 12 and for supporting the earth and sand. Further, the support claw 94 includes a support claw 94a located at the lower part of the cylindrical main body 12 and support claws 94b and 94c provided at appropriate positions above the support claw 94a. The support claw 94 has three stages in the axial direction of the cylindrical main body 12. It is arranged.
[0031]
  As shown in FIG. 9 (1), the pipe 92 is formed with a notch 96 for accommodating the support claw 94 at the upper part of the mounting portion of each support claw 94. The lower portion of the notch 96 is a bearing portion 98 as shown in FIG. 2B, and a support claw 94 is pivotally attached to the bearing portion 98 via a mounting pin 100. Further, the pipe 92 has a stopper portion 102 formed at the lower portion of the bearing portion 98. When the tubular body 12 is pulled up from the excavation groove 60 or by its own weight, the pipe 92 moves downward (as indicated by an arrow 104 in FIG. 9A). The support claw 94 that rotates to the center side of the cylindrical main body 12 can be locked at a substantially horizontal position. Further, the pipe 92 is provided with a stopper portion 106 at an upper portion of the notch 96.
[0032]
  When the cylindrical body 12 is inserted into the excavation groove 60, the stopper portion 106 rotates upward (outside) as indicated by an arrow 108 and receives the tip end portion of the support claw 94 received in the notch 96. When the tip end is held in a state protruding from the pipe 92 and the cylindrical main body 12 is pulled up, the tip of the support claw 94 engages with the earth and sand in the cylindrical main body 12 and rotates as indicated by an arrow 104. I have to. Further, as shown in FIG. 9B, the support claw 94 has an angle θ (for example, 15 to 15) on the side of the pipe 92 having a larger attachment interval with respect to the central direction 110 of the cylindrical body 12. 30 degrees). For this reason, in the state where each support claw 94 protrudes from the pipe 92 and supports the earth and sand in the cylindrical main body 12, as shown schematically in FIG. It comes close to the tip of the support claw 94.
[0033]
  According to the second embodiment configured as described aboveEarth removal equipmentAt 90, when the cylindrical main body 12 is inserted into the excavation groove 60, the support claw 94 rotates as indicated by the arrow 108 in FIG. 9 (1) and is accommodated in the notch 96. For this reason, the cylindrical main body 12 can be inserted into the excavation groove 90 with little influence from the support claws 94. However, the tip of the support claw 94 is locked by the stopper 106 and held in a state of protruding from the pipe 92. Then, when the cylindrical main body 12 is pulled up by a crane or the like provided in the vehicle, the support claw 94 protrudes from the pipe 92 at the tip, so the tip engages with the earth and sand inside the cylindrical main body 12, It is rotated by the earth and sand as shown by the arrow 104 in FIG. 9 (1), falls down, is inserted into the earth and sand, is locked by the stopper portion 102, and is maintained in a substantially horizontal state. Therefore, when the cylindrical main body 12 is further pulled up, since the earth and sand in the cylindrical main body 12 is supported by the support claws 94, it is separated from the earth and sand below the support claws 94a and pulled up together with the cylindrical main body 12. Therefore, the earth and sand in the cylindrical main body 12 can be excavated.
[0034]
  The cylindrical main body 12 pulled out from the ground together with the earth and sand is moved as it is, for example, above the dump truck. Then, a hook or the like is hooked into a hooking hole (not shown) provided in the lower part of the cylindrical main body 12, and the hook is lifted to turn the cylindrical main body 12 upside down. Thereby, the support claw 94 rotates as the earth and sand in the cylindrical main body 12 moves downward, and is accommodated in the notch 96. For this reason, the earth and sand in the cylindrical main body 12 falls on the dump truck from the cylindrical main body 12.
[0035]
  Thus, in 2nd Embodiment, while turning the earth and sand inside the cylindrical main body 12 with the support nail | claw 94 which turns in and out from the pipe 92, the cut earth and sand are supported, and the cylindrical main body 12 and Because it can be pulled up together,Earth removal equipmentSimplification of the structure, and no special earth and sand cutting operation is required.Earth removal workBecomes easy. In addition, since the supporting claws 94 are arranged in a plurality of stages in the axial direction of the cylindrical main body 12, it is possible to reliably support the earth and sand, and it is possible to reduce the burden on the lower supporting claws 94a. The strength (rigidity) of the support portion can be reduced, and a deeper hole can be excavated.
[0036]
  In the embodiment described above, the case where the support claw 94 is attached to the pipe 92 has been described. However, the support claw 94 may be attached by a bracket or the like provided on the inner peripheral portion of the cylindrical main body 12. Further, the support claw 94 may have any number of steps as long as it has one or more steps. And when the cylindrical main body 12 is divided into a plurality of rings and mutually connected and disassembled by screw connection or the like,Earth removal equipmentIs easy to transport and handle.
[0037]
【The invention's effect】
  As described above, according to the present invention, the periphery of a planned excavation area such as a planned pillar location is excavated in a loop shape to search for an embedded object, and the cylindrical main body is disposed in the loop excavation groove. Then, pull the cutting wire on the ground and squeeze it to cut the earth and sand in the cylindrical main body, and then place the earth and sand receptacle such as a sheet in the cutting part that is pulled out from the cylindrical main body and cut by the cutting wire. Pull out from the ground with a crane together with the tubular body, and open the sediment receiver above the truck. The excavated earth and sand will be loaded on the truck, and the excavation of the planned excavation area and loading of the earth and sand into the truck will be carried out without human intervention. Can be doneEarth removal workEfficiency can be increased.
[0038]
  Moreover, it is possible to excavate pillar holes and load earth and sand into a truck only with a crane-equipped truck that is used in normal operations without using a hole-built vehicle, and excavation can be easily performed. And since only the range and depth of exploration of the buried object are excavated, even if there are buried objects such as gas pipes close to the planned excavation area, there is no risk of damaging this,Earth removal workCan be done easily and safely. In addition, unlike excavation by the earth auger, excavation efficiency can be increased because only necessary portions are excavated without excessive excavation.
[0039]
  Further, according to the present inventionEarth removal methodOr secondEarth removal equipmentInTubular bodyPull upTubular bodyA plurality of support claws provided rotatably on the inner periphery of theTubular bodyRotate by engaging with the earth and sand inside,Tubular bodyBecause it protrudes from and is inserted into the earth and sand.Tubular bodyThe support claws inserted in the earth and sandTubular bodyIn support of the earth and sand, cut from the earth and sand below it,Tubular bodyAlong with it can be raised to the ground. Accordingly, the first aspect of the present inventionEarth removal equipmentThe same effect can be obtained. Moreover, the second aspect of the present inventionEarth removal equipmentIn, because it does not require a cutting wire or the like for cutting the earth and sand, the structure can be simplified and no special earth and sand cutting operation is required.Earth removal workCan be simplified. In addition, by providing multiple stages of support claws,Tubular bodyThe support of the earth and sand can be made more reliable, and deeper holes can be excavated by one excavation operation.
[Brief description of the drawings]
FIG. 1 relates to a first embodiment of the present invention.Earth removal equipmentIt is a schematic explanatory drawing.
2 is an enlarged perspective view of a portion A in FIG. 1, and (2) is a cross-sectional view taken along line BB in FIG.
FIG. 3 is a detailed explanatory diagram of the earth and sand cutting wire according to the embodiment.
FIG. 4 is a detailed explanatory view of the earth and sand receiving sheet and the drawing wire according to the embodiment.
FIG. 5 relates to an embodiment.Earth removal equipmentIt is explanatory drawing of an example of the excavation groove which arrange | positions.
FIG. 6 is an explanatory diagram of a sediment receiving sheet according to another embodiment.
[Fig. 7] Using the earth and sand receiving sheet according to another embodiment.Earth removal equipmentFIG.
FIG. 8 relates to a second embodiment of the present invention.Earth removal equipmentIt is a schematic diagram which shows the cross section.
FIG. 9 (1) relates to the second embodiment.Earth removal equipmentIt is an expanded sectional view of a support nail | claw part, (2) is sectional drawing along the AA of (1).
FIG. 10 is related to the second embodiment.Earth removal equipmentIt is a schematic diagram which shows the support state of the earth and sand.
[Explanation of symbols]
  10Earth removal equipment
  12 Tubular body
  20 Sediment cutting wire
  22, 46 Wire placement groove
  28 Seat compartment
  36 Drawer port
  38, 66 Earth and sand receiving member (earth and sand receiving sheet)
  40, 42 Holding wire
  44 Drawer wire
  68, 72, 74, 76, 78 Holding wire
  90Earth removal equipment
  92 pipes
  94 Supporting nails

Claims (4)

An excavation method for discharging the earth and sand in the planned excavation area surrounded by the loop-shaped excavation groove after excavating the peripheral portion of the planned excavation area in a loop shape. The cylindrical main body is disposed, and the distal ends of a plurality of support claws provided in the circumferential direction at the inner peripheral portion of the cylindrical main body are held in a protruding state and inserted into the earth and sand in the cylindrical main body, and the cylindrical main body A soil discharging method, wherein the earth and sand supported by rotating the tip portions of the plurality of support claws together with the cylindrical body are pulled out together with the cylindrical body.   A cylindrical main body arranged in the loop excavation groove, and earth and sand in the cylindrical main body by pulling an end portion provided along the inner peripheral surface of the cylindrical main body and drawn to the upper part of the cylindrical main body. A cutting wire that cuts the wire, and is connected to the drawing wire and is housed in the cylindrical body so as to be drawable along a peripheral surface, and the cutting is performed by pulling the drawing wire drawn from the cylindrical body. An earth discharging device comprising: an earth and sand receiving sheet disposed at a cutting portion of the earth and sand cut by a wire. A cylindrical main body disposed in the loop excavation groove, and a plurality of circumferential main bodies are provided in the inner peripheral portion of the cylindrical main body, and when the cylindrical main body is inserted into the excavation groove, the tip portion is held in a protruding state, When the cylindrical main body is pulled up, the tip has a support claw that rotates inside the cylindrical main body so as to be engageable with the earth and sand in the cylindrical main body and supports the earth and sand in the cylindrical main body. Characteristic earth removing device.   The earth removing device according to claim 3, wherein the supporting claws are provided in a plurality of stages in the axial direction of the cylindrical main body.

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