CN205593784U

CN205593784U - Percussion boring geotome

Info

Publication number: CN205593784U
Application number: CN201620375737.6U
Authority: CN
Inventors: 陈松
Original assignee: Sichuan Nuclear Industry Geological Bureau 282 Brigade
Current assignee: Sichuan Nuclear Industry Geological Bureau 282 Brigade
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2016-09-21
Anticipated expiration: 2026-04-29

Abstract

The utility model discloses a percussion boring geotome, manage including fetching earth and set up at the connecting portion of nose portion that fetch earth, its characterized in that, fetch earth the pipe for the tubular structure of under shed, the lower extreme mouth of pipe of the pipe that fetches earth is for advancing tu kou, and lower extreme mouth of pipe wall forms the blade that fetches earth, and top that the inner wall of the pipe that fetches earth lies in the blade that fetches earth is along fetching earth the hollow shaft to being equipped with a plurality of shallow slots, and a plurality of shallow slots are equipped with the shell fragment at the pipe diameter that the fetches earth symmetric distribution that makes progress in the shallow slot, and the upper end of shell fragment be the expansion end, and the lower extreme is movable connecting end, and the upper end of shell fragment is the arc towards tub axial direction that fetches earth and bends curved, when fetching earth, and shell fragment and shallow slot embedded connection. The utility model discloses simple structure, convenient operation can effectively improve the percussion boring efficiency that fetches earth, especially can take loose soil sample, improves percussion boring speed, has enlarged the scope that percussion boring was suitable for the soil layer simultaneously, is suitable for looser soil layer promptly and holes.

Description

A kind of percussive drilling soil sampler

Technical field

This utility model belongs to construction engineering technical field, relates to a kind of soil sampler, is specifically related to a kind of percussive drilling soil sampler.

Background technology

Percussive drilling is a kind of boring method that in geotechnical engineering investigation, down-the-hole probing is conventional, it is suitable for soil layer to creep into, capital equipment includes weight, soil sampler and elevating mechanism, its main operational steps is an up machinery and weight is mentioned certain altitude, weight by its bigger gravity by soil sampler injection soil layer, the most repeatedly, after soil sampler injection certain depth, soil sampler is taken out, empties the soil sample in soil sampler and be reentered in hole, repeat top-operation and can complete boring.Its advantage be equipment and simple to operate, speed is fast, low cost and STRATIGRAPHIC DIVISION accurate, its disadvantage is at loose soil bed, especially in loosening sand, soil sampler is difficult to take out soil sample, and i.e. when promoting soil sampler, soil sample easily slips from soil sampler, cause the difficulty that fetches earth, it is impossible to creep into.Causing soil sample landing main cause is soil sampler inner wall smooth, and the frictional force between soil sample is difficult to overcome soil sample gravity.

Utility model content

The purpose of this utility model is to optimize the deficiency of existing production technology, adapts to reality need, it is provided that a kind of percussive drilling soil sampler.

In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:

A kind of percussive drilling soil sampler, including the connecting portion managing and being arranged on pipe top of fetching earth that fetches earth, the described pipe tubular structure under shed that fetches earth, fetch earth the lower end mouth of pipe of pipe for entering Tu Kou, lower end mouth of pipe wall forms the cutting edge that fetches earth, the inwall of pipe of fetching earth is positioned at the top of the cutting edge that fetches earth and is axially arranged with some shallow slots along the pipe that fetches earth, some shallow slot is the most symmetrical at the caliber that fetches earth, shell fragment it is provided with in shallow slot, the upper end of shell fragment is movable end, lower end is for being flexibly connected end, the upper end of shell fragment is convexly curved shape towards the pipe axial centre that fetches earth, when fetching earth, shell fragment is embedded with shallow slot to be connected.

Described shallow slot is low wide and up narrow trapezoidal or rectangular configuration with the cross section of shell fragment.

The pipe shaft upper end of the described pipe that fetches earth is the mouth of pipe shape structure closed.

The pipe shaft upper end formation of the described pipe that fetches earth is horn-like.

The described inside pipe wall that fetches earth is positioned at the notch bottom of shallow slot and is radially provided with through hole, and screw is connected through through hole with the lower end of shell fragment.

Described shell fragment lower outside is nut structure, and when shell fragment embeds shallow slot, nut embeds in through hole.

Shell fragment is embedded with shallow slot when being connected, and shell fragment can not protrude from outside shallow slot.

The ailhead face of described screw flushes with the outer wall of the pipe that fetches earth.

This utility model simple in construction, easy to operate, percussive drilling soil extracting efficiency can be effectively improved, it is particularly possible to take loose soil sample, improve percussive drilling speed, expand the scope of percussive drilling suitable soil layer simultaneously, be i.e. suitable for loosely soil layer boring.

Accompanying drawing explanation

Fig. 1 is generalized section of the present utility model；

In figure, fetch earth pipe 1, shallow slot 2, shell fragment 3, screw 4.

Detailed description of the invention

With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings:

Embodiment: see Fig. 1.

As it is shown in figure 1, percussive drilling soil sampler is made up of the pipe 1 that fetches earth, shell fragment 3 and screw 4.nullFetch earth the tubular structure that pipe 1 is under shed，Highly 800mm，External diameter 127mm，Wall thickness 4mm，Internal diameter 119mm，Its top is provided with connecting portion and is connected with sinker bar，Connecting portion can use screw-type，Fetch earth the lower end mouth of pipe of pipe 1 for entering Tu Kou，Lower end mouth of pipe wall forms the cutting edge that fetches earth，Have at lower end inner wall distance cutting edge 50mm and be axially arranged with some shallow slots 2，Some shallow slot is the most symmetrical at the pipe 1 that fetches earth，The quantity of groove is preferably 4～10，Preferably 6～8，Preferably it is arranged symmetrically with，The deep 1mm of shallow slot，Long 120mm，The cross section of shallow slot is the trapezoidal of width 15mm upper end, lower end width 10mm，Trapezoidal low wide and up narrow，To increase the counter-bending rigidity in bottom，The through hole of diameter 6mm is had at distance shallow slot lower end 5mm，Shell fragment 3 is to have the most elastic elastic steel sheet，Thickness 1mm，Shell fragment 3 the trapezoidal shape that cross section is width 13mm upper end, lower end width 8mm，The upper end of shell fragment 3 is movable end，Lower end is for being flexibly connected end，The upper end of shell fragment 3 is convexly curved shape towards the pipe axial centre that fetches earth，When fetching earth，Shell fragment 3 is embedded with shallow slot 2 to be connected，A nut is fixed at shell fragment 3 convex surface of center at the 5mm of lower end，Nut has screw thread，External diameter 6mm internal diameter 3mm，Shell fragment 3 can just embed in shallow slot 2，Nut can just embed in through hole.Described screw 4 one end band nut, diameter 3mm, fit in through through hole and be connected with the nut on shell fragment, thus shell fragment 3 lower end is fixed in the shallow slot 2 of the inside pipe wall that fetches earth, when shell fragment is fixed by screw rod, the nut of screw 4 flushes with the pipe outer wall surface that fetches earth.When soil sampler is installed, shell fragment 3 is embedded in shallow slot 2, be connected with nut with elastic from pipe 1 outer wall insertion of fetching earth with screw 4, tightening screw rod can be fixed in shallow slot shell fragment lower end, shell fragment upper end is then to tube hub bending of fetching earth, during dismounting soil sampler, as long as laying down screw rod, shell fragment just comes off from the pipe that fetches earth.

When percussive drilling, soil sampler is first installed, will be placed on and fetch earth in inside pipe wall shallow slot by shell fragment, nut on shell fragment embeds slotted eye, insert slotted eye with screw rod from the pipe outer wall that fetches earth and be connected with the nut shell fragment, tightening screw rod, be fixed in shallow slot shell fragment lower end, mounted shell fragment upper end is convexly curved towards the pipe axial centre that fetches earth.Being connected with drilling rod mounted soil sampler upper end, soil sampler is put into hole and with tension weight churning with elevating mechanism, soil sample enters soil sampler and is also expressed in shallow slot by shell fragment.When promoting soil sampler, if soil sample is intended to from soil sampler landing, shell fragment can stop soil sample landing to tube hub direction bending of fetching earth under its own resilient and soil sample action of gravity, when soil sampler proposes ground, shed screw rod, and shell fragment comes off from the pipe that fetches earth, and i.e. can be taken off soil sample.

This utility model takes the key step of soil sample install soil sampler and be connected with hammering drilling rod, put in hole with elevating mechanism by soil sampler and take out after pouring into certain depth with tension weight churning, soil sampler, in ground dismounting soil sampler taking-up soil sample.The method installing soil sampler is to embed in the pipe shallow slot that fetches earth by shell fragment and fixed its lower end with screw rod.The method of dismounting soil sampler is to unclamp the pipe lower end screw rod that fetches earth, and shell fragment comes off, by hitting taking-up soil sample of shaking.

Claims

1. a percussive drilling soil sampler, including fetching earth pipe (1) and be arranged on the connecting portion at pipe (1) top of fetching earth, it is characterized in that, the described pipe (1) that fetches earth is the tubular structure of under shed, fetch earth the lower end mouth of pipe of pipe (1) for entering Tu Kou, lower end mouth of pipe wall forms the cutting edge that fetches earth, the inwall of pipe (1) of fetching earth is positioned at the top of the cutting edge that fetches earth and is axially arranged with some shallow slots along the pipe (1) that fetches earth, some shallow slot is the most symmetrical at the pipe (1) that fetches earth, shell fragment (3) it is provided with in shallow slot, the upper end of shell fragment (3) is movable end, lower end is for being flexibly connected end, the upper end of shell fragment (3) is convexly curved shape towards the pipe axial centre that fetches earth, when fetching earth, shell fragment (3) is embedded with shallow slot (2) to be connected.

A kind of percussive drilling soil sampler the most according to claim 1, it is characterised in that described shallow slot (2) is low wide and up narrow trapezoidal or rectangular configuration with the cross section of shell fragment (3).

A kind of percussive drilling soil sampler the most according to claim 1 and 2, it is characterised in that described in fetch earth the mouth of pipe shape structure that pipe shaft upper end is closing of pipe (1).

A kind of percussive drilling soil sampler the most according to claim 3, it is characterised in that described in the fetch earth pipe shaft upper end formation of pipe (1) be horn-like.

A kind of percussive drilling soil sampler the most according to claim 1, it is characterized in that, the notch bottom that described pipe (1) inwall that fetches earth is positioned at shallow slot is radially provided with through hole, and screw (4) is connected through through hole with the lower end of shell fragment (3).

A kind of percussive drilling soil sampler the most according to claim 5, it is characterised in that described shell fragment (3) lower outside is nut structure, when shell fragment (3) embeds shallow slot (2), nut embeds in through hole.

A kind of percussive drilling soil sampler the most according to claim 1, it is characterised in that shell fragment (3) is embedded with shallow slot (2) when being connected, and shell fragment (3) can not protrude from shallow slot (2) outward.

A kind of percussive drilling soil sampler the most according to claim 5, it is characterised in that the ailhead face of described screw (4) flushes with the outer wall of the pipe (1) that fetches earth.