CN116754279A - Direct-pushing soil sampling drilling tool and sampling method thereof - Google Patents

Abstract

The invention relates to a direct-pushing soil sampling drilling tool and a sampling method thereof, wherein the direct-pushing soil sampling drilling tool comprises an outer drill pipe and further comprises: the inner drill rod can be arranged in the outer drill pipe and can seal the lower opening of the outer drill pipe; the salvage lifting mechanism can be arranged in the outer drill pipe and is detachably connected with the inner drill rod arranged in the outer drill pipe, and the salvage lifting mechanism is used for lifting the inner drill rod to be separated from the outer drill pipe so as to open the lower opening of the outer drill pipe; the sampling tube is positioned in the outer drilling tube, and can be communicated with the lower opening of the outer drilling tube to form a soil inlet channel. The underground sampling device has the beneficial effects that two sampling modes of underground facing and sampling after drilling underground for a certain depth are simultaneously realized. The outer drill pipe continuously supports the wall of the borehole being drilled. After drilling to the depth to be sampled, the inner drill rod is lifted by the salvaging lifting mechanism to be separated from the outer drill pipe, so that the time for connecting and dismounting the inner drill rod for many times is saved. Sampling is carried out by the sampling tube, so that soil samples are prevented from being polluted by soil layers coated on the outer drilling tube.

Description

Direct-pushing soil sampling drilling tool and sampling method thereof

Technical Field

The invention relates to the technical field of sampling devices, in particular to a direct-pushing soil sampling drilling tool and a sampling method thereof.

Background

The environmental investigation is to sample soil through a drilling machine and a drilling tool, analyze the sample to obtain soil pollutant evaluation analysis data so as to judge pollution conditions and support the establishment of an environmental restoration scheme. In the sampling process, high requirements are provided for disturbance of soil samples and chemical element interference, and at present, soil sampling is generally carried out by adopting a static pressure direct pushing, impact vibration and no circulating liquid mode.

Existing drilling tools generally include the following two types:

the first type includes an outer drill pipe and a sampling pipe disposed within the outer drill pipe.

The second type includes an outer drill pipe and an inner drill pipe disposed within the outer drill pipe.

When the first type of drilling tool is used: in the drilling process, the outer drill pipe and the sampling pipe are required to be connected one by one according to the sampling depth in a plurality of times. After the sampling is finished, the soil samples in the sampling pipes can be obtained only by lifting the outer drilling pipes and the sampling pipes to the ground and disassembling the sampling pipes one by one. Meanwhile, the drilling tool of the type can only realize continuous sampling from the ground to the underground, and cannot directly realize rapid sampling after drilling into the underground for a certain depth, namely, when the soil sample at the underground depth a-b is required to be obtained, the soil sample from the ground to the underground depth b is still required to be continuously obtained.

When the second type of drilling tool is in use: in the drilling process, the outer drill pipes and the inner drill pipes are required to be increased for a plurality of times according to the sampling depth and connected one by one, when drilling to the depth to be sampled, the outer drill pipes and the inner drill pipes are required to be lifted to the ground completely, the outer drill pipes and the inner drill pipes are required to be detached one by one, and then the outer drill pipes are connected one by one and put into drilled holes to be sampled by the outer drill pipes.

Therefore, when the two types of drilling tools are used, the outer drilling pipes, the sampling pipes or the inner drilling rods are required to be thrown into the soil for multiple times and connected one by one, the outer drilling pipes and the sampling processes of the sampling pipes or the inner drilling rods are required to be completely lifted and detached, and the sampling processes of the sampling pipes or the inner drilling rods are complex and tedious, time and labor are wasted, and the efficiency is low. Meanwhile, when the drilled geology contains more sand and/or water, if the outer drill pipe is lifted to the ground and then is thrown into the drilled hole again, the soil at the hole wall formed by drilling is easy to collapse and land the drill hole to cause soil mixed layers with different depths, and when the outer drill pipe is thrown again, the soil mixed layers in the outer drill pipe enter, so that the sampling depth of the soil sample cannot be accurately judged. Meanwhile, the outer drill pipe is generally made of metal, the inner wall surface of some outer drill pipes is coated with a coating to improve mechanical and physical characteristics, and soil samples sampled by the outer drill pipe are easy to mix with the material of the outer drill pipe or the coating coated on the outer drill pipe, so that analysis and measurement of pollutants in the soil samples are interfered.

Disclosure of Invention

First, the technical problem to be solved

In view of the above-mentioned drawbacks and shortcomings of the prior art, the present invention provides a direct-pushing soil sampling drilling tool and a sampling method thereof, which solve the technical problems that the existing sampling drilling tool cannot simultaneously realize the sampling from the ground to the underground and the sampling after drilling to a certain depth in the underground, the sampling pipe and the inner drilling pipe do not need to be lifted and disassembled for multiple times, the outer drilling pipe does not need to be lifted and disassembled for multiple times in the whole sampling process, and the sampling is performed by the sampling pipe.

The method has the technical problems that the sampling process of throwing and gradually connecting an outer drilling pipe, an inner drilling pipe and a sampling pipe into soil for multiple times and lifting and detaching the outer drilling pipe, the inner drilling pipe and the sampling pipe completely is complex and tedious, time and labor are wasted, and the efficiency is low; and when the drilled geology contains sand and/or water more, the outer drill pipe is lifted to the ground, so that the soil at the hole wall formed by drilling is easy to collapse, landfill and drill holes to cause soil mixed layers with different depths, and the technical problem that the sampling depth of a soil sample cannot be accurately judged is solved.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:

in a first aspect, an embodiment of the present invention provides a direct-push soil sampling drilling tool, including an outer drill pipe, further including:

an inner drill rod capable of being placed inside the outer drill pipe, the inner drill rod capable of closing a lower opening of the outer drill pipe;

the salvage lifting mechanism can be arranged in the outer drill pipe and is detachably connected with the inner drill rod arranged in the outer drill pipe, and the salvage lifting mechanism is used for lifting the inner drill rod to be separated from the outer drill pipe so as to open a lower opening of the outer drill pipe;

the sampling tube is positioned in the outer drilling tube, and can be communicated with the lower opening of the outer drilling tube to form a soil inlet channel.

According to the invention, the outer drill pipe comprises an outer pipe body and an outer drill bit;

the outer drill bit is a ring body, and the upper part of the outer drill bit is inserted into and connected with the inside of the lower end of the outer pipe body;

the lower end of the sampling tube can be abutted against the top of the outer drill bit, and the upper end of the sampling tube can be abutted against the bottom of the seat ring on the inner wall of the outer tube body.

According to the invention, the drilling tool further comprises a core blocking cone which can be arranged in the sampling tube or the outer drill bit in a movable manner along the axial direction of the outer drill tube;

when the inner drill rod is arranged in the outer drill pipe, the inner drill rod can press the core plugging cone until the core plugging cone is positioned in the outer drill bit so as to close the lower opening of the outer drill bit;

when the inner drill rod is separated from the outer drill pipe, the core blocking cone can enter the sampling pipe and block the top of the soil sample in the sampling pipe.

According to the invention, the cone end of the core blocking cone can extend out of the lower opening of the outer drill bit;

the inner wall of the outer drill bit is stepped;

the upper part circumference of the core blocking cone extends outwards along the radial direction to form an annular abutting part, and the annular abutting part can be abutted on the step surface of the inner wall of the outer drill bit.

According to the invention, the inner drill rod comprises a rod body and a top cap connected to the lower end of the rod body;

when the inner drill rod is placed in the outer drill pipe, the top cap can press the top of the core plugging cone, so that the core plugging cone is pressed into the outer drill bit.

According to the invention, the invention also comprises a one-way soil inlet piece;

the unidirectional soil inlet piece is arranged in the lower cavity of the sampling tube, and can enable soil to enter the sampling tube unidirectionally through the lower opening of the outer drill bit and can be used for receiving the bottom of a soil sample in the sampling tube after the sampling tube is sampled.

According to the invention, the unidirectional soil inlet piece comprises a connecting ring which is coaxially arranged with the sampling pipe and is positioned in the sampling pipe, and a plurality of arc-shaped strip bodies which are arranged at the end part of the connecting ring along the circumferential direction of the connecting ring at intervals and extend towards the inner cavity of the sampling pipe, wherein an opening formed by the surrounding of the arc-shaped strip bodies can penetrate through the inner drill rod and the core blocking cone;

a plurality of the arc-shaped strips can be extruded by soil to be opened so that the soil can enter the sampling tube unidirectionally through the lower opening of the outer drill bit; and, in addition, the processing unit,

the plurality of arc strips can be folded to accept the bottom of the soil sample in the sampling tube after sampling.

According to the invention, the salvage lifting mechanism comprises a spring clamping frame connector assembly, wherein the spring clamping frame connector assembly can be hung on the top of a seat ring positioned on the inner wall of the outer drill pipe;

the elastic clamping frame joint component can be connected to the upper part of the inner drill rod in a threaded manner, and the elastic clamping frame joint component can be screwed to drive the inner drill rod to lift;

the upper part of the inner drill rod is sleeved with and in threaded connection with a nut, and the nut is positioned below the elastic clamping frame joint assembly;

and a spring gasket is sleeved on the upper part of the inner drill rod and is positioned between the nut and the elastic clamping frame joint assembly.

According to the invention, the bullet clamping frame joint component comprises a bullet clamping frame joint and a bullet clamping frame, wherein the bullet clamping frame joint is detachably connected to the inner drill rod;

the lower part of the spring clamping frame is detachably connected with the upper part of the spring clamping frame connector, a suspension ring is clamped between the peripheral wall of the lower part of the spring clamping frame and the peripheral wall of the upper part of the spring clamping frame connector, and the suspension ring can be hung at the top of the seat ring;

the spring clamping frame is a cavity cylinder, and a spring clamping limiting block and a spring clamp are sequentially arranged in the spring clamping frame from top to bottom; the spring clip limiting block comprises two limiting blocks, and the two limiting blocks are inserted into first long holes extending along the axial direction on the peripheral wall of the spring clip frame through bolts; the elastic clamp comprises two clamp bodies, and the two clamp bodies are inserted into through holes in the peripheral wall of the elastic clamp frame through bolts; the free ends of the two limiting blocks are hinged to the free ends of the two clamp bodies in a one-to-one correspondence manner;

the upper end of a spring sleeved on the periphery of the spring clamping frame is propped against a spring baffle plate connected to the top of the spring clamping frame, the lower end of the spring is propped against the free ends of the two limiting blocks to drive the free ends of the two limiting blocks to open so as to drive the free ends of the two clamp bodies to extend out of a second long hole which is positioned on the peripheral wall of the spring clamping frame and extends along the axial direction of the second long hole and extend into an annular spring clamping chamber arranged on the inner peripheral wall of the outer drill pipe;

the salvage lifting mechanism further comprises:

the recovery pipe is sleeved outside the bullet clamping frame, and the peripheral wall of the recovery pipe is provided with a recovery pipe long hole which is used for extending the free end of the limiting block and the free end of the bullet clamping caliper along the axial direction; the bolts inserted into the two limiting blocks are also inserted into the first through holes at the upper parts of the peripheral walls of the recovery pipes;

and the spear head is connected with the spear head seat at the upper part of the recovery pipe, and the spear head is connected with the top groove of the spear head seat in a way that the lower part of the spear head seat stretches into the top groove of the spear head seat, and is used for winding ropes.

In a second aspect, the invention also provides a sampling method of the direct-pushing soil sampling drilling tool, which comprises the following steps:

when the underground sampling from the surface is required, the method comprises the following steps:

a1: the outer drill pipe drills, and soil enters the sampling pipe from an opening at the lower part of the outer drill pipe;

when the underground sampling is needed, the method comprises the following steps:

b1: connecting the salvage lifting mechanism to the upper part of the inner drill rod, and placing the salvage lifting mechanism and the inner drill rod into the outer drill pipe, wherein the inner drill rod seals the lower opening of the outer drill pipe;

b2: the outer drill pipe and the inner drill pipe synchronously drill to the depth to be sampled, the inner drill pipe is lifted by the salvage lifting mechanism to be separated from the outer drill pipe, and the lower opening of the outer drill pipe is opened;

b3: the outer drill pipe drills, and soil enters the sampling pipe from the opening at the lower part of the outer drill pipe.

(III) beneficial effects

The beneficial effects of the invention are as follows: the direct-pushing type soil sampling drilling tool and the sampling method thereof can simultaneously realize the sampling operation from the ground to the underground and two sampling modes of obtaining the soil sample with the required sampling depth after drilling the underground for a certain depth, thereby meeting different sampling requirements. Meanwhile, the outer drill pipe does not need to be lifted underground in the whole sampling process, the outer drill pipe can continuously support the hole wall formed by drilling, when the outer drill pipe is prevented from drilling the geology containing sand and/or more water, the soil collapse landfill drilling at the hole wall formed by drilling caused by lifting the outer drill pipe to the ground can be prevented from causing soil mixed layers with different depths, and therefore soil samples with required sampling depths can be accurately obtained. Meanwhile, after the direct-push soil sampling drilling tool drills to the depth to be sampled, the inner drill rod can be conveniently and rapidly lifted to be separated from the outer drill pipe through the salvaging lifting mechanism, one or more inner drill rods are connected to the top of the inner drill rod to adapt to the sampling depth repeatedly according to the sampling depth, and all inner drill rods are lifted to the ground and then detached one by one to obtain sampling samples, so that the time for connecting and detaching the inner drill rods repeatedly is saved, the sampling process is simplified, the sampling efficiency can be improved, and the sampling time is shortened. Meanwhile, the sampling tube is used for sampling, so that the outer drilling tube and soil layers coated on the outer drilling tube can be prevented from polluting soil samples.

Drawings

FIG. 1 is a schematic diagram of a direct-push soil sampling drill of the present invention;

fig. 2 is a schematic view of the one-way soil intake member of fig. 1.

[ reference numerals description ]

1: an outer drill pipe; 11: an outer tube body; 111: a spring clip blocking head; 112: a card ejecting chamber member; 113: an external drilling tool; 114: a card ejection chamber; 12: an outer drill bit; 121: a step surface; 13: a seat ring;

2: an inner drill rod; 21: a rod body; 22: a top cap;

3: salvaging the lifting mechanism; 31: a spring clip frame joint assembly; 311: a spring clamping frame joint; 312: a spring clamping frame; 3121: a first elongated aperture; 313: a suspension loop; 314: a spring clip limiting block; 3141: a limiting block; 315: spring calipers; 316: a spring baffle; 317: a recovery pipe; 3171: a recovery tube elongated hole; 32: fishing spear head seat; 321: a top groove; 322: a spearhead seat long hole; 323: a spearhead socket bolt; 33: fishing spearhead; 34: positioning a stop pin; 35: a positioning spring; 36: a spearhead latch; 37: a spring; 38, a step of carrying out the process; a nut; 39: a spring washer;

4: a core blocking cone; 41: a seal; 42: an annular abutting portion;

5: a unidirectional soil inlet piece; 51: a connecting ring; 52: an arc-shaped strip body;

6: and (5) a sampling tube.

Detailed Description

The invention will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein references herein to "upper", "lower", etc. are made to the orientation of fig. 1.

Referring to fig. 1-2, a direct-pushing soil sampling drilling tool according to an embodiment of the present invention includes an outer drill pipe 1, an inner drill pipe 2, a salvage lifting mechanism 3 and a sampling pipe 6.

The inner drill rod 2 can be placed inside the outer drill pipe 1 and the inner drill rod 2 can close the lower opening of the outer drill pipe 1. The fishing and lifting mechanism 3 can be placed in the outer drill pipe 1 and detachably connected to the inner drill rod 2 placed in the outer drill pipe 1, and the fishing and lifting mechanism 3 is used for lifting the inner drill rod 2 out of the outer drill pipe 1 so as to open the lower opening of the outer drill pipe 1. The sampling tube 6 is located in the outer drill tube 1, and the sampling tube 6 can be communicated with the lower opening of the outer drill tube 1 and form a soil inlet channel.

Further, the sampling method of the direct-pushing soil sampling drilling tool comprises the following steps:

when the underground sampling from the surface is required, the method comprises the following steps:

a1: the outer drill pipe 1 drills, soil enters the sampling pipe 6 from the lower opening of the outer drill pipe 1, and the sampling pipe 6 samples the soil.

When the underground sampling is needed, the method comprises the following steps:

b1: connecting the salvage lifting mechanism 3 with the upper part of the inner drill pipe 2, and placing the salvage lifting mechanism 3 and the inner drill pipe 2 in the outer drill pipe 1, wherein the inner drill pipe 2 seals the lower opening of the outer drill pipe 1;

b2: the outer drill pipe 1 and the inner drill pipe 2 are synchronously drilled to the depth to be sampled, the inner drill pipe 2 is lifted by the salvage lifting mechanism 3 to be separated from the outer drill pipe 1, and the lower opening of the outer drill pipe 1 is opened;

b3: the outer drill pipe 1 drills, soil enters the sampling pipe 6 from the lower opening of the outer drill pipe 1, and the sampling pipe 6 samples the soil.

The direct-pushing type soil sampling drilling tool and the sampling method thereof can simultaneously realize the sampling operation from the ground to the underground and two sampling modes of obtaining the soil sample with the required sampling depth after drilling the underground for a certain depth, thereby meeting different sampling requirements. Meanwhile, the outer drill pipe 1 does not need to be lifted underground in the whole sampling process, the outer drill pipe 1 can continuously support the hole wall formed by drilling, and soil collapse landfill drilling at the hole wall formed by drilling caused by lifting the outer drill pipe 1 to the ground can be prevented from causing soil mixing layers with different depths when drilling the geology with sand and/or more water, so that soil samples with required sampling depths can be accurately obtained. Meanwhile, after the direct-push soil sampling drilling tool drills to the depth to be sampled, the inner drilling rod 2 can be conveniently and rapidly lifted to be separated from the outer drilling pipe 1 through the salvaging lifting mechanism 3, one or more inner drilling rods 2 are connected to the top of the inner drilling rod 2 for adapting to the sampling depth without repeated times according to the sampling depth, and all the inner drilling rods 2 are lifted to the ground and then detached one by one to obtain sampling samples, so that the time for connecting and detaching the inner drilling rods 2 for multiple times is saved, the sampling process is simplified, the sampling efficiency can be improved, and the sampling time is shortened. At the same time, sampling is performed by the sampling tube 6, so that the outer drill tube 1 and the coating layer coated on the outer drill tube 1 are prevented from being mixed in the soil sample, and the determination of the metal component in the contaminated soil sample can be prevented from being influenced.

Preferably, the sampling tube 6 is made of PVC (polyvinyl chloride) and does not affect the determination of the metal components of the soil sample in contaminated soil.

Specifically, two adjacent outer drill pipes 1 are screwed.

Further, the outer drill pipe 1 comprises an outer tubular body 11 and an outer drill bit 12.

The outer drill bit 12 is a ring body, and the outer drill bit 12 is used for drilling. The upper portion of the outer drill 12 is inserted into and coupled to the inside of the lower end of the outer tube 11. The lower end of the sampling tube 6 can rest against the top of the outer drill bit 12 and the upper end of the sampling tube 6 can rest against the bottom of a seat ring 13 on the inner wall of the outer tubular body 11 to define the up and down position of the sampling tube 6 relative to the outer drill tube 1.

Specifically, the outer drill 12 is tapered, and the upper end of the outer drill 12 extends upward to form an annular connecting portion. The connecting part is used for being detachably connected with the outer drill pipe 1 so as to be convenient to repair and detach. Preferably, the connecting part is provided with external threads, inserted into the lower end of the outer drill pipe 1 and screwed on the lower end of the outer drill pipe 1; or, the connecting part is provided with internal threads, sleeved outside the lower end of the outer drill pipe 1 and connected with the lower end of the outer drill pipe 1 in a threaded manner.

Specifically, the outer tube 11 sequentially includes, from top to bottom, a snap-lock head 111, a snap-lock chamber 112, and an outer drill 113, which are all annular and sequentially screwed. The lower end of the latch head 111 and the inner peripheral wall of the latch chamber member 112 form an annular latch chamber 114. The lower end of the spring clip chamber 112 and the inner peripheral wall of the outer drill 113 form an annular seat ring cavity that accommodates the seat ring 13.

Further, the direct-pushing soil sampling drilling tool of the invention further comprises a core plug 4, and the core plug 4 can be arranged in the sampling tube 6 or the outer drill bit 12 along the axial direction of the outer drill tube 1.

When the inner drill rod 2 is placed in the outer drill pipe 1, the inner drill rod 2 can press the core cone 4 until the core cone 4 is positioned in the outer drill bit 12 to close the lower opening of the outer drill bit 12.

When the inner drill rod 2 is disengaged from the outer drill pipe 1, the core plug 4 can enter the sampling pipe 6 and block the top of the soil sample in the sampling pipe 6. Specifically, when the outer drill pipe 1 drills, soil presses the core blocking cone 4 and presses the core blocking cone 4 into the sampling pipe 6 until the top of the sampling pipe 6, and the core blocking cone 4 can block the top of a soil sample in the sampling pipe 6.

Specifically, the cone end of the core cone 4 can extend out of the lower opening of the outer drill bit 12 and simultaneously drill with the outer drill bit 12.

Preferably, the circumferential wall of the core cone 4 is sleeved with one or more sealing elements 41, and the sealing elements 41 are used for sealing the gap between the circumferential wall of the core cone 4 and the inner wall of the outer drill bit 12, so that soil is prevented from entering the gap between the circumferential wall of the core cone 4 and the inner wall of the outer drill bit 12. Alternatively, the seal 41 is an O-ring or other seal.

Specifically, the inner wall of the outer drill bit 12 is stepped. The upper circumference of the core blocking cone 4 extends outwards along the radial direction to form an annular abutting part 42, and the annular abutting part 42 can abut against the step surface 121 of the inner wall of the outer drill bit 12, so that the core blocking cone 4 is prevented from moving downwards and separating from the outer drill bit 12.

Further, the inner drill rod 2 includes a rod body 21 and a top cap 22 connected to the lower end of the rod body 21.

When the inner drill rod 2 is placed in the outer drill pipe 1, the top cap 22 can press against the top of the core cone 4 to press the core cone 4 into the outer drill bit 12.

Further, the direct-pushing soil sampling drilling tool of the present invention further comprises a unidirectional soil feeding member 5.

The unidirectional soil inlet piece 5 is arranged in the lower cavity of the sampling tube 6, and the unidirectional soil inlet piece 5 can enable soil to enter the sampling tube 6 unidirectionally through the lower opening of the outer drill bit 12, and can receive the bottom of a soil sample in the sampling tube 6 after the sampling tube 6 is sampled, so that the soil sample in the sampling tube 6 is prevented from falling off when the soil sample is taken out.

Specifically, the unidirectional soil inlet piece 5 comprises a connecting ring 51 coaxially arranged with the sampling tube 6 and positioned in the sampling tube 6, and a plurality of arc-shaped strip bodies 52 which are arranged at the end part of the connecting ring 51 along the circumferential direction of the connecting ring 51 at intervals and extend towards the inner cavity of the sampling tube 6, wherein the opening formed by surrounding the arc-shaped strip bodies 52 can penetrate through the inner drill rod 2 and the core plugging cone 4.

The plurality of arc-shaped strips 52 can be squeezed by soil to open so that the soil can enter the sampling tube 6 unidirectionally from the lower opening of the outer drill bit 12; and, the plurality of arcuate strips 52 can be gathered to receive the bottom of the soil sample in the sampled sampling tube 6.

More specifically, the connecting ring 51 of the unidirectional soil inlet piece 5 is inserted into the sampling tube 6, and the connecting ring 51 and the sampling tube 6 are in interference fit.

Further, the fishing and lifting mechanism 3 includes a spring clip connector assembly 31.

The spring-holder joint assembly 31 can be hung on top of the seat ring 13 on the inner wall of the outer drill pipe 1. The bullet clamping frame joint assembly 31 can be connected to the upper portion of the inner drill rod 2 in a threaded mode, the screwing of the bullet clamping frame joint assembly 31 can drive the inner drill rod 2 to lift, so that the top cap 22 of the inner drill rod 2 can abut against the top of the core plugging cone 4, and the length of the core plugging cone 4 protruding out of the outer drill bit 12 can be adjusted.

Specifically, the upper part of the inner drill rod 2 is provided with external threads, and the elastic clamping frame joint assembly 31 can be sleeved and connected with the upper part of the inner drill rod 2 in a threaded manner; alternatively, the upper portion of the inner drill rod 2 is provided with an internal thread, the lower portion of the spring-clamping-frame joint assembly 31 is provided with an external thread, and the spring-clamping-frame joint assembly 31 can be inserted and screwed into the upper portion of the inner drill rod 2.

Specifically, the upper portion of the inner drill rod 2 is sleeved with and screwed with the nut 38, the nut 38 is located below the elastic clamping frame joint assembly 31, and the nut 38 is used for preventing the elastic clamping frame joint assembly 31 from loosening when being connected with the upper portion of the inner drill rod 2, so that the double safety function is achieved. A spring washer 39 is sleeved on the upper portion of the inner drill rod 2, the spring washer 39 is located between the nut 38 and the spring clip frame joint assembly 31, and the spring washer 39 is used for preventing looseness between the spring clip frame joint assembly 31 and the nut 38.

Further, the spring clip connector assembly 31 includes a spring clip connector 311 and a spring clip 312, the spring clip connector 311 being detachably connected to the inner drill rod 2.

The lower part of the spring clamping frame 312 is detachably connected with the upper part of the spring clamping frame connector 311, a suspension ring 313 is clamped between the lower peripheral wall of the spring clamping frame 312 and the upper peripheral wall of the spring clamping frame connector 311, and the suspension ring 313 can be hung on the top of the seat ring 13 to limit the downward movement of the salvage lifting mechanism 3.

The bullet card rack 312 is a cavity column, a bullet card limiting block 314 and a bullet caliper 315 are sequentially arranged in the bullet card rack 312 from top to bottom, the bullet card limiting block 314 comprises two limiting blocks 3141, and the two limiting blocks 3141 are inserted into a first long hole 3121 extending along the axial direction on the peripheral wall of the bullet card rack 312 through a bolt; the spring clamp 315 comprises two clamp bodies which are inserted into through holes on the peripheral wall of the spring clamp frame 312 through bolts; the free ends of the two limiting blocks 3141 are hinged to the free ends of the two clamp bodies in a one-to-one correspondence manner, and the two limiting blocks 3141 and the two clamp bodies form a four-bar mechanism;

the upper end of the spring 37 sleeved on the periphery of the spring clamping frame 312 abuts against the spring baffle 316 connected to the top of the spring clamping frame 312, and the lower end of the spring 37 abuts against the free ends of the two limiting blocks 3141 to drive the free ends of the two limiting blocks 3141 to open so as to drive the free ends of the two clamp bodies to extend out of the second long hole which is positioned on the peripheral wall of the spring clamping frame 312 and extends along the axial direction of the second long hole and extend into the annular spring clamping chamber 114 arranged on the inner peripheral wall of the outer drill pipe 1. When the bullet callipers 315 are located in the bullet card chamber 114, the bullet card chamber 114 can limit the bullet callipers 315 to move upwards, and then limit the salvage lifting mechanism 3 to move upwards, and when drilling is avoided, the inner drill rod 2 upwards extrudes the salvage lifting mechanism 3 to cause the salvage lifting mechanism 3 to shift and separate from the outer drill pipe 1.

Thereby, the suspension ring 313 limits the salvage lifting mechanism 3 to move downwards, and the top wall of the spring clamping chamber 114 limits the salvage lifting mechanism 3 to move upwards, so as to realize the up-and-down limiting of the salvage lifting mechanism 3 in the axial direction.

Specifically, the spring retainer 316 is removably attached to the top of the spring clip frame 312 by bolts.

Further, the salvage lifting mechanism 3 also includes a recovery pipe 317.

The recovery tube 317 is sleeved outside the spring clamping frame 312, and the peripheral wall of the recovery tube 317 is provided with a recovery tube long hole 3171 extending along the axial direction for extending the free end of the limiting block 3141 and the free end of the spring clamp 315. The bolts inserted on the two limiting blocks 3141 are also inserted in the first through holes in the middle of the peripheral wall of the recovery pipe 317.

Further, the fishing and lifting mechanism 3 further includes a fishing spearhead seat 32 and a fishing spearhead 33.

A spear head seat 32 attached to the upper portion of the recovery pipe 317 and a spear head 33 having a lower portion extending into and attached to a top groove 321 of the spear head seat 32, the spear head 33 being used to wind a rope.

Specifically, the locating stop pin 34 is arranged in the top groove 321, and the top end of the locating stop pin 34 is abutted on the bottom end plane of the fishing spearhead 33, so that the fishing spearhead 33 can move vertically when the fishing and lifting mechanism 3 is lifted, the fishing spearhead 33 is prevented from rotating left and right, and the success rate of lifting the fishing and lifting mechanism 3 is improved.

Specifically, the positioning stop pin 34 is peripherally sleeved with a positioning spring 35, the top end of the positioning spring 35 is abutted against the bottom end of the pin head of the positioning stop pin 34, and the bottom end of the positioning spring 35 is abutted against the bottom wall of the top groove 321. The detent spring 35 is in a pre-tensioned state and is capable of applying an upward pre-tensioned force to the detent pin 34 such that the top of the detent pin 34 abuts the bottom end plane of the spearhead 33.

Specifically, the lower portion of the spear head 33 is inserted into the top groove 321 of the spear head seat 32 and then is connected by a latch.

Specifically, the lower peripheral wall of the spear head seat 32 is provided with a spear head seat long hole 322 extending in the axial direction thereof, and the upper peripheral wall of the recovery tube 317 is provided with a second through hole. After the lower part of the spear head seat 32 is inserted into the upper part of the recovery pipe 317, the spear head seat long hole 322 and the second through hole on the recovery pipe 317 are correspondingly and then penetrated with a spear head seat plug 323 so as to connect the spear head seat 32 to the upper part of the recovery pipe 317.

When the spearhead 33 is lifted upwards, the spearhead 33 drives the spearhead seat 32 to move upwards, and after the spearhead seat latch 323 abuts against the spearhead seat long hole 322, the spearhead seat 32 drives the recovery pipe 317 to move upwards synchronously.

Specifically, the principle that the salvaging and lifting mechanism 3 drives the inner drill rod 2 to be separated from the outer drill pipe 1 is as follows:

the rope on the winch lowering rope fishing device of the drilling machine is wound and fixed on the fishing spearhead 33. Then, the rope is pulled up by the winch lowering rope fishing device, the rope lifts up the fishing spearhead 33, the fishing spearhead 33 drives the fishing spearhead seat 32 to move up, and after the fishing spearhead seat latch 323 abuts against the fishing spearhead seat long hole 322, the fishing spearhead seat 32 drives the recovery pipe 317 to move up synchronously. The recovery pipe 317 moves up and drives two limiting blocks 3141 inserted in the first through holes on the peripheral wall of the recovery pipe 317 through bolts to move up, the free ends of the two limiting blocks 3141 shrink inwards under the action of the gravity of the two clamp bodies, and the free ends of the two clamp bodies rotate and are separated from the spring clamping chamber 114. The inner drill rod 2, which is connected to the bullet holder joint 311, is then moved synchronously up to disengage the outer drill pipe 1 by the bullet holder 312, the bullet holder joint 311, and the bullet holder 315 being driven by the bullet calipers 315. From this, the hoist by the rig is put down the rope fishing device and is pulled the rope in order to promote salvage hoist mechanism 3 to convenient and fast breaks away from outer drill pipe 1 with interior drilling rod 2, compare in the mode of continuously promoting and twisting and unloading many sampling tube 1, very big promotion sampling efficiency, also can be convenient and fast put in sampling tube 6 through salvage hoist mechanism 3 outside in the drill pipe 1.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims (10)

1. The utility model provides a straight push type soil sampling drilling tool, includes outer drill pipe (1), its characterized in that still includes:

-an inner drill rod (2), which inner drill rod (2) is placeable within the outer drill pipe (1), which inner drill rod (2) is capable of closing a lower opening of the outer drill pipe (1);

a salvaging and lifting mechanism (3), wherein the salvaging and lifting mechanism (3) can be arranged in the outer drill pipe (1) and detachably connected with the inner drill rod (2) arranged in the outer drill pipe (1), and the salvaging and lifting mechanism (3) is used for lifting the inner drill rod (2) to be separated from the outer drill pipe (1) so as to open a lower opening of the outer drill pipe (1);

the sampling tube (6), sampling tube (6) are located outer drill pipe (1), sampling tube (6) can communicate outer drill pipe (1)'s lower part opening and form into the soil passageway.

2. The direct push soil sampling drill as claimed in claim 1, characterized in that the outer drill pipe (1) comprises an outer tubular body (11) and an outer drill bit (12);

the outer drill bit (12) is a ring body, and the upper part of the outer drill bit (12) is inserted into and connected with the inside of the lower end of the outer pipe body (11);

the lower end of the sampling tube (6) can be abutted against the top of the outer drill bit (12), and the upper end of the sampling tube (6) can be abutted against the bottom of a seat ring (13) positioned on the inner wall of the outer tube body (11).

3. The direct push soil sampling drill as claimed in claim 2, further comprising a core plug (4), the core plug (4) being movably arranged in the sampling tube (6) or the outer drill bit (12) in the axial direction of the outer drill tube (1);

when the inner drill rod (2) is arranged in the outer drill pipe (1), the inner drill rod (2) can press the core plugging cone (4) until the core plugging cone (4) is positioned in the outer drill bit (12) so as to close the lower opening of the outer drill bit (12);

when the inner drill rod (2) is separated from the outer drill pipe (1), the core blocking cone (4) can enter the sampling pipe (6) and block the top of the soil sample in the sampling pipe (6).

4. A direct-push soil sampling drill as claimed in claim 3, characterized in that the cone end of the core cone (4) is capable of extending out of the lower opening of the outer drill bit (12);

the inner wall of the outer drill bit (12) is stepped;

the upper circumference of the core blocking cone (4) extends outwards along the radial direction to form an annular abutting part (42), and the annular abutting part (42) can be abutted on a step surface (121) of the inner wall of the outer drill bit (12).

5. A straight push soil sampling drilling tool as claimed in claim 3, characterized in that the inner drill rod (2) comprises a rod body (21) and a top cap (22) connected to the lower end of the rod body (21);

when the inner drill rod (2) is placed in the outer drill pipe (1), the top cap (22) can press against the top of the core plug (4) so as to press the core plug (4) into the outer drill bit (12).

6. A direct-push soil sampling drill as claimed in claim 3, further comprising a unidirectional earth feed (5);

the unidirectional soil inlet piece (5) is arranged in the lower cavity of the sampling tube (6), and the unidirectional soil inlet piece (5) can enable soil to enter the sampling tube (6) unidirectionally through the lower opening of the outer drill bit (12) and can be used for receiving the bottom of a soil sample in the sampling tube (6) after the sampling tube (6) is sampled.

7. The direct-push soil sampling drilling tool according to claim 6, wherein the unidirectional soil feeding member (5) comprises a connecting ring (51) coaxially arranged with the sampling tube (6) and positioned in the sampling tube (6), and a plurality of arc-shaped strips (52) which are circumferentially arranged at intervals along the connecting ring (51) at the end part of the connecting ring (51) and extend towards the inner cavity of the sampling tube (6), wherein an opening surrounded by the arc-shaped strips (52) can pass through the inner drill rod (2) and the core plugging cone (4);

a plurality of the arc-shaped strips (52) can be extruded by soil to open so as to enable the soil to enter the sampling tube (6) unidirectionally through the lower opening of the outer drill bit (12); and, in addition, the processing unit,

the plurality of arc-shaped strips (52) can be folded to receive the bottom of the soil sample in the sampled sampling tube (6).

8. The direct push soil sampling drilling tool as claimed in claim 1, characterized in that the fishing and lifting mechanism (3) comprises a spring-clip-frame joint assembly (31), the spring-clip-frame joint assembly (31) being capable of being hung on top of a seat ring (13) located on the inner wall of the outer drill pipe (1);

the elastic clamping frame joint component (31) can be connected to the upper part of the inner drill rod (2) in a threaded manner, and the elastic clamping frame joint component (31) can be screwed to drive the inner drill rod (2) to lift;

the upper part of the inner drill rod (2) is sleeved with and in threaded connection with a nut (38), and the nut (38) is positioned below the elastic clamping frame joint assembly (31);

the upper part of the inner drill rod (2) is sleeved with a spring gasket (39), and the spring gasket (39) is positioned between the nut (38) and the elastic clamping frame joint assembly (31).

9. The direct push soil sampling drill as claimed in claim 8, characterized in that the cartridge connector assembly (31) comprises a cartridge connector (311) and a cartridge (312), the cartridge connector (311) being detachably connected to the inner drill rod (2);

the lower part of the spring clamping frame (312) is detachably connected with the upper part of the spring clamping frame joint (311), a suspension ring (313) is clamped between the lower peripheral wall of the spring clamping frame (312) and the upper peripheral wall of the spring clamping frame joint (311), and the suspension ring (313) can be hung at the top of the seat ring (13);

the spring clamping frame (312) is a cavity cylinder, and a spring clamping limiting block (314) and a spring clamp (315) are sequentially arranged in the spring clamping frame (312) from top to bottom; the spring clip limiting block (314) comprises two limiting blocks (3141), and the two limiting blocks (3141) are inserted into a first long hole (3121) extending along the axial direction on the peripheral wall of the spring clip frame (312) through bolts; the spring clamp (315) comprises two clamp bodies, and the two clamp bodies are inserted into through holes in the peripheral wall of the spring clamp frame (312) through bolts; the free ends of the two limiting blocks (3141) are hinged to the free ends of the two clamp bodies in a one-to-one correspondence manner;

the upper end of a spring (37) sleeved on the periphery of the spring clamping frame (312) is propped against a spring baffle (316) connected to the top of the spring clamping frame (312), the lower end of the spring (37) is propped against the free ends of the two limiting blocks (3141) so as to drive the free ends of the two limiting blocks (3141) to open, and the free ends of the two clamp bodies can extend out of a second long hole which is positioned on the peripheral wall of the spring clamping frame (312) and extends along the axial direction of the peripheral wall of the spring clamping frame and extend into an annular spring clamping chamber (114) which is arranged on the inner peripheral wall of the outer drill pipe (1);

the salvage lifting mechanism (3) further comprises:

the recovery tube (317), the said recovery tube (317) is set up outside the said bullet card frame (312), the peripheral wall of the said recovery tube (317) is set up and used for the free end of the said stopper (3141) and the free end of the said bullet caliper (315) to stretch out the long hole (3171) of recovery tube along the axial extension; the bolts inserted into the two limiting blocks (3141) are also inserted into the first through holes at the upper parts of the peripheral walls of the recovery pipes (317);

and a spear head (33) connected to a spear head seat (32) at the upper part of the recovery pipe (317) and a spear head (33) with the lower part extending into and connected to a top groove (321) of the spear head seat (32), wherein the spear head (33) is used for winding ropes.

10. A method of sampling a straight push soil sampling drill according to any one of claims 1 to 9, comprising the steps of:

when the underground sampling from the surface is required, the method comprises the following steps:

a1: the outer drill pipe (1) drills, and soil enters the sampling pipe (6) from an opening at the lower part of the outer drill pipe (1);

when the underground sampling is needed, the method comprises the following steps:

b1: connecting the salvage lifting mechanism (3) with the upper part of the inner drill pipe (2), and placing the salvage lifting mechanism (3) together with the inner drill pipe (2) in the outer drill pipe (1), wherein the inner drill pipe (2) seals the lower opening of the outer drill pipe (1);

b2: the outer drill pipe (1) and the inner drill pipe (2) are synchronously drilled to the depth to be sampled, the inner drill pipe (2) is lifted by the salvage lifting mechanism (3) to be separated from the outer drill pipe (1), and the lower opening of the outer drill pipe (1) is opened;

b3: the outer drill pipe (1) drills, and soil enters the sampling pipe (6) from the lower opening of the outer drill pipe (1).