CN102518131A

CN102518131A - All-casing barrier-free geotome

Info

Publication number: CN102518131A
Application number: CN2012100044424A
Authority: CN
Inventors: 晏岱; 简洪钰; 练国富
Original assignee: Fujian University of Technology
Current assignee: Fujian University of Technology
Priority date: 2012-01-09
Filing date: 2012-01-09
Publication date: 2012-06-27
Anticipated expiration: 2032-01-09
Also published as: CN102518131B

Abstract

The invention relates to an all-casing barrier-free geotome, which is characterized in that: a geotome main body comprises an annular base and a plurality of valve plates, wherein the annular base can be fixed on the end part of a soil taking pipe; a plurality of lugs which are overlapped with the soil taking pipe are uniformly distributed on the circumference of the upper end face of the annular base; the lugs and the soil taking pipe are provided with corresponding bolt holes; the end face of the annular base between adjacent lugs is further provided with a shaft seat; the arc-shaped base part of each valve plate is positioned on the corresponding shaft seat through a pin shaft; the upper swing parts of the valve plates can be attached to the inner wall of the soil taking pipe; and the lower swing parts of the valve plates can be used for enclosing the annular base. The all-casing barrier-free geotome has the characteristics of simple structure, reasonable design and barrier-free soil taking; and a valve plate shaft of the geotome is positioned on the edge of the soil taking pipe, is attached to the inner wall of the pipe during pipe submerging, and can be used for automatically enclosing a soil taking pipe orifice during elevating, so that operation is easy and practicable, and the defect of the presence of barriers in the conventional soil taking pipe or the need of other actions for closing the soil taking pipe orifice is overcome.

Description

The accessible soil sampler of a kind of a complete set of pipe

Technical field:

The invention belongs to the engineering construction apparatus field, the accessible soil sampler of particularly a kind of a complete set of pipe especially is fit to apply in the large-diameter fully-sleeved filled stake of fetching earth.

Background technology:

The existing large-diameter fully-sleeved filled pile driving construction flow process that fetches earth is roughly: stud pipe in 1, dither sinks to, a pipe in feasible basis soil gets into; 2, extract interior stake pipe; 3, vibration casting; 4, insert interior stake pipe once more, repeat above-mentioned steps, until design elevation; 5, compressibility by shaking bearing stratum; 6, install reinforcing cage; 7, fluid concrete; 8, stud pipe in the high pressure vibration is extracted; 9, solidify pile.In stake manage fetching earth effect, its end at interior stake pipe be designed with can opening and closing soil sampler, when this soil sampler sinks to along with the stake pipe, open make basis soil get in the stake pipe, and when managing in the lifting, soil sampler cuts out.Soil sampler design rationally whether, directly influence the engineering construction progress.Like Chinese patent communique CN1461856A; Disclosed a kind of balanced type static press pile frame by name increases anchor expanding pile pipe type soil sampler; The soil sampler that this patent relates to is made up of the barrel triangle back cover bent plate and the wire rope of steel tube end part in being fixed on, and controls the closing motion of said barrel triangle back cover bent plate through wire rope.When this soil sampler weak point was wire rope control barrel triangle back cover bent plate closing motion, the gravity direction of the direction of barrel triangle back cover bent plate swing and steel pipe basis soil was opposite, needs bigger driving force during operation.And existing automatic soil sampler promptly is to be fixed with a crossbeam in interior stake pipe diametric(al), is hinged with two halves round valve sheet respectively in the crossbeam both sides; During immersed tube, two valve blocks are upwards opened by basis soil extruding automatically, when in the lifting pipe; Under the basic native weight in the interior stake pipe; Two valve blocks are closed automatically, need not additional act, can basis soil be taken out.But this structure also has weak point, promptly is the existence of crossbeam, and when making immersed tube, resistance is bigger, and when running into stone, often immersed tube can not carry out smoothly, even the reaction force of stone, makes beam deformation, and the operation that causes fetching earth can't be carried out, and influences construction speed.

Summary of the invention:

The objective of the invention is to design a kind of valve shaft and be positioned at the tube edge edge of fetching earth, the complete set of ability automatic open and close is managed accessible soil sampler

Technical scheme of the present invention is achieved in that the accessible soil sampler of a kind of a complete set of pipe, it is characterized in that the soil sampler main body comprises that one can be fixed on the circular base and the plural pieces valve block of the tube end that fetches earth; Be evenly distributed with on the circumference of circular base upper surface and count and the overlapping lug of pipe that fetches earth, offer the bolt hole of correspondence on lug and the pipe that fetches earth, the circular base end face between the adjacent lugs also is provided with axle bed; The arcuate base of said valve block is positioned on the described axle bed through bearing pin, and pendulum can be attached on the inside pipe wall that fetches earth on the plural pieces valve block, and the bottom can the closed ring pedestal.During immersed tube, the reaction force of basis soil is put valve block on the axle anchor point, be close on the inside pipe wall that fetches earth, and the pipe that fetches earth is unobstructed for open ports, and foreign material such as basis soil and stone can get in the pipe that fetches earth smoothly; And when promoting when fetching earth pipe, under the effect of basis soil, valve block is the bottom automatically, and the plural pieces valve block is the sealing infratubal port that fetches earth just, accomplishes the operation of fetching earth smoothly; Behind the rising ground, can unload soil sampler, the basis soil in the pipe that can emptying fetches earth when needing, can repeat above-mentioned action.

Said valve block becomes sector structure, has arcuate base and both sides straight flange portion, and said arcuate base central authorities are welded with a stiffening girder, are positioned on the described axle bed through this stiffening girder; During the valve block bottom, this arcuate base can conflict on the inwall of circular base form spacing.Also be the valve block bottom again, seal the mouth of pipe that fetches earth just.

That the present invention has is simple in structure, reasonable in design, mouthful unlimited clog-free characteristics fetch earth; The valve shaft of soil sampler is positioned at the tube edge edge of fetching earth, and is attached to during immersed tube on the inside pipe wall, can seal the mouth of pipe that fetches earth automatically again during lifting, and operation is simple, overcomes the existing pipe that fetches earth and has obstruction, perhaps needs other to move the defective of closing the mouth of pipe that fetches earth.

Description of drawings:

Below in conjunction with concrete legend the present invention is further specified:

The accessible pipe schematic perspective view that fetches earth of a complete set of pipe of Fig. 1

Accessible the fetching earth of a complete set of pipe of Fig. 2 managed the view that fetches earth

The accessible pipe that fetches earth of a complete set of pipe of Fig. 3 promotes view

Wherein

1-circular base 11-lug 12-axle bed

2-valve block 21-arcuate base 22-straight flange portion

23-stiffening girder 3-fetches earth and manages the 4-bolt

The specific embodiment:

With reference to Fig. 1, Fig. 2 and Fig. 3, the accessible soil sampler of a complete set of pipe, its main body comprises a circular base 1 and plural pieces valve block 2; Being evenly distributed with on the circular base 1 upper surface circumference counts manages 3 overlapping lugs 11 with fetching earth; Lug 11 offers corresponding bolt hole with fetching earth to manage on 3; By bolt 4 circular base 1 is locked on the pipe 3 that fetches earth, and circular base 1 end face between the adjacent lugs 11 also is provided with axle bed 12; 2 one-tenth sector structures of said valve block have arcuate base 21 and both sides straight flange portion 22, and said arcuate base 21 central authorities are welded with a stiffening girder 23, and valve block 2 is positioned on the described axle bed 12 through this stiffening girder 23; When putting on the valve block 2, can be attached on pipe 3 the inwall that fetches earth, not hindering basis soil to get into, and when valve block 2 bottoms, the formation of conflicting on the inwall of circular base 1 of this arcuate base 21 is spacing, and 2 formation of plural pieces valve block being closed to fetch earth and managing the effect of the mouth of pipe.

The working method of soil sampler: soil sampler is connected fixing with pipe 3 usefulness the bolts 4 that fetch earth, is inserted in a Guan Bingyi and reinstates high-frequency vibratory hammer and be driven underground, during earth entering this moment is managed; And back down the valve block 2 of soil sampler, along with the stake pipe sinks to the underground pipe 3 (or claiming inner sleeves) that the soil body got into fetch earth, when pile sinking puts in place; Pipe 3 will fetch earth again together with pulling out on the soil sampler,, impel valve block 2 to close along with near the whereabouts of the soil sampler and top earth; When valve block 2 closes level; It is limited that the arcuate base 21 of valve block 2 props up circular base 1 inwall, and this moment, soil sampler just cut out, and the earth of staying in the pipe 3 that fetches earth just is raised taking-up; After the pipe 3 that fetches earth is mentioned ground, manage fixing soil sampler 3 bolt 4 and unclamp with fetching earth, mentioning fetches earth again manages 3 earth in will managing and draws off.

Claims

1. the accessible soil sampler of a complete set of pipe is characterized in that the soil sampler main body comprises that one can be fixed on the circular base and the plural pieces valve block of the tube end that fetches earth; Be evenly distributed with on the circumference of circular base upper surface and count and the overlapping lug of pipe that fetches earth, offer the bolt hole of correspondence on lug and the pipe that fetches earth, the circular base end face between the adjacent lugs also is provided with axle bed; The arcuate base of said valve block is positioned on the described axle bed through bearing pin, and pendulum can be attached on the inside pipe wall that fetches earth on the plural pieces valve block, and the bottom can the closed ring pedestal.

2. the accessible soil sampler of a kind of a complete set of pipe according to claim 1 is characterized in that valve block becomes sector structure, has arcuate base and both sides straight flange portion, and said arcuate base central authorities are welded with a stiffening girder, are positioned on the described axle bed through this stiffening girder; During the valve block bottom, this arcuate base can conflict on the inwall of circular base form spacing.