Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B7/00—Special methods or apparatus for drilling
  • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
  • E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
  • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
  • E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder

Definitions

• the present invention relates to a small-diameter pipe propulsion device for burying a small-diameter pipe in the ground. Background technology
• small-diameter pipe propulsion machines in which small-diameter pipes such as sewer pipes and conduit pipes are buried in the ground, use a propulsion device in which a small-diameter pipe with a tip pipe attached at the tip is installed in a starting shaft. It is being buried by promoting it inside.
• the conventional propulsion system has a short-stroke propulsion jack, and a long-stroke propulsion jacket telescopic cylinder. Something was missing.
• one expansion and contraction is required to propel one small pipe with one expansion and contraction.
• one small-diameter pipe is propelled into the ground by two expansions and contractions by replacing the pin.
• a propulsion jacket with long stroke requires less than twice as much space as the stroke when using a cylinder.
• the present invention has been made for the purpose of remedying the above-mentioned problems, and will provide a propulsion device for a small-diameter pipe propulsion device capable of efficiently propelling a small-diameter pipe in a small space. It is assumed that. Disclosure of the invention
• the present invention relates to a small-diameter pipe propulsion device in which a small-diameter pipe is buried by propelling the small-diameter pipe into the ground by a propulsion device body installed in a starting shaft.
• a propulsion jack and a propulsion rod are provided in the propulsion direction, the front end of the propulsion rod is movably supported on the cylinder of the propulsion jack, and the rear end is fixed to the tip of the piston rod.
• a drive device for propelling the small-diameter pipe is provided between the propulsion rods so as to be able to move back and forth, and between the drive device, the propulsion jack and the propulsion port.
• a coupling means for selectively coupling between the propulsion jack and a coupling means for selectively coupling between them is provided between both ends of the propulsion jack and the reaction force receiving means. .
• the small-diameter pipe is grounded by extending the propulsion jack while fixing the piston rod of the propulsion jack.
• the propulsion jack is shortened while the cylinder of the propulsion jack is fixed and the cylinder of the propulsion jack is fixed, the small pipe can be propelled. become .
• FIG. 1 is a partially cutaway plan view
• FIG. 2 is a side view
• FIG. 3 or FIG. 4 is an explanatory view of action
• FIG. 6 is an explanatory diagram showing another embodiment.
• 1 is the main body of this device installed in the starting shaft 2, and two anti-cards installed on the upper part of the gantry 3 so as to be parallel to the direction of propulsion of the small-diameter pipe 4. 6 is suspended.
• Reference numeral 5 denotes a pair of propulsion jacks movably supported by the anti-card 4, respectively, and the cylinders 5a and the projections 5 projecting rearward from the cylinder 5a.
• the reaction rod 6 penetrates through the hollow piston rod 5b and the center of the cylinder 5a.
• a propulsion jack 5 is supported for the reaction force ⁇ -head 6.
• Hydraulic chucks 12 and 13 are provided at the front end and the rear end of the propulsion jack 5, respectively.
• the hydraulic chucks 12 and 13 respectively provide hydraulic chucks.
• the cylinder 5a and the stainless steel rod 5b can be fixed to any positions of the above counter card 6. With Ru have, that have promoted di catcher Tsu key top and propulsion by sales of each pair is parallel thereto is below the 5 Rod 1 4 is provided c
• the front end of the propulsion ⁇ -head 14 is fixedly mounted on a sliding plate 5c slidably fitted around the outer periphery of a cylinder 5a of the propulsion jack 5, and the rear end thereof. Is fixed to a bracket 5d protruding from a hydraulic chuck 13 fixed to the tip of the piston rod 5b.
• the sliding plate 5c is slid along the cylinder 5a with the expansion and contraction of the cylinder.
• the drive unit 7 includes a pipe propulsion member 7a having both ends supported on the outer periphery of the cylinder 5a of the propulsion rod 14 and the propulsion jack 5, and a pipe propulsion member 7a.
• a consists of the drive unit 7b installed above, the pin 8 between the pipe propulsion member 7a and the cylinder 5a, and the pipe propulsion member 7a and the sliding plate 5a.
• a pin 9 is detachably provided between the pipe propulsion member 7a and the cylinder 5a, and between the pipe propulsion member 7a and the cylinder propulsion member 7a by the pins 8 and 9.
• the heads 14 can be selectively connected.
• the screw unit 15 and the small diameter pipe 4 housed in the small diameter pipe 4 are driven by the driving unit ⁇ b provided on the pipe propulsion member a.
• the pipe head (not shown) of the front conduit attached to the tip can be driven by image rotation.
• the pressure check 13 fixing the piston rod 5b and the anti-card 6 is released, and the hydraulic pressure fixing the cylinder 5a and the anti-card 6 is released.
• the driving device 7 is advanced through the propulsion port 14 as shown in FIG.
• the small pipe 4 can be propelled into the ground.
• the propulsion jack 5 and the driving device 7 are returned to the positions shown in Fig. 2 and the above operation is repeated. As a result, the small diameter pipe 4 can be continuously propelled.
• the reaction force at the time of propulsion is supported by the reaction card 6 provided so as to penetrate the propulsion jack 5, but FIGS.
• the anti-card 6 and the hydraulic chucks 12 and 13 are eliminated, and the propulsion jack 5 is removed.
• the same function can be obtained by alternately fixing the two ends to the upper surface of the gantry 3 via the detachable pins 16.
• the present invention has been made in the manner described above in detail, and has been made so that a small-diameter pipe can be propelled into the ground both when the propulsion jack is extended and contracted. Therefore, the propulsion time can be reduced by half, compared to the conventional propulsion during extension or contraction, and the propulsion period can be greatly reduced. Since the pipe can be propelled, the starting shaft can be reduced in size, which is economical.

Landscapes

• Engineering & Computer Science (AREA)
• Geology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Mechanical Engineering (AREA)
• Excavating Of Shafts Or Tunnels (AREA)
• Earth Drilling (AREA)
• Press Drives And Press Lines (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=12216922

Family Applications (1)

Country Status (4)

Cited By (4)

Families Citing this family (5)

Citations (3)

• 1990
  • 1990-03-19 JP JP2728990U patent/JP2510302Y2/ja not_active Expired - Lifetime
• 1991
  • 1991-03-13 WO PCT/JP1991/000343 patent/WO1991014851A1/ja active IP Right Grant
  • 1991-03-13 DE DE69123735T patent/DE69123735T2/de not_active Expired - Fee Related
  • 1991-03-13 EP EP91906267A patent/EP0521157B1/en not_active Expired - Lifetime

Patent Citations (3)

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