CN211036986U - Pile foundation soil sampling equipment - Google Patents

Abstract

The utility model discloses a pile foundation equipment of fetching earth, including the barrel that is used for fetching earth, the barrel is held and is located the other end of barrel and send the tip that feeds through with the end of advancing earth including the other end that is used for the down in-process of barrel to supply the earth body to pass through, the barrel includes that two at least coaxial covers are established and can be carried out the flexible sleeve pipe of axial. The utility model provides a borrowing equipment has the sleeve pipe that can carry out relative axial is flexible to can increase and decrease sheathed tube quantity according to actual conditions, form the barrel of different specifications, improve the universal performance of borrowing equipment, and borrowing equipment can once only accomplish the borrowing, avoid carrying out a lot of borrowing, improve borrowing efficiency, shorten the borrowing cycle, practice thrift construction cost, the operation of once only borrowing is the same basically with the operation of borrowing many times among the prior art simultaneously, need not to increase the operation degree of difficulty, improve the convenience of borrowing.

Description

Pile foundation soil sampling equipment

Technical Field

The utility model relates to a borrowing technical field specifically is a pile foundation equipment of borrowing.

Background

The reinforced concrete precast pile is prefabricated by utilizing a forming die in a factory, and then is transported to a place where a pile position is located, on the basis of applying technical measures such as hammering, static pressure and the like to a certain degree, a pile body enters a preset position, in the pile driving process, the pile body can extrude surrounding soil body certainly, the soil body is extruded out of the surface of the soil layer in the form of slurry, the environment pollution of a construction site is serious, construction equipment and constructors cannot carry out pile driving operation, therefore, soil needs to be taken from the pile driving position to form a pile driving hole, the pile driving hole provides a space for the extruded soil body to enter, and the soil body is prevented from overflowing to pollute the construction environment.

Generally, the soil taking amount of a precast pile is about 10 cubic meters, soil taking work before piling of the existing precast pile is generally carried out by adopting a rotary drilling rig of bored concrete pile soil taking equipment, soil is taken out by inserting a cylinder body into a soil layer, soil is taken in the cylinder body and then taken out, the rotary drilling rig is mostly used for taking soil of the bored concrete pile, the soil taking depth of the bored concrete pile is 20-50 meters, and due to the influence of the soil taking depth, in order to ensure the stability of deep soil taking, the soil taking cylinder can only be arranged into the cylinder body with the soil taking amount of about 1 cubic meter once, otherwise, the stability of deep soil taking of the rotary drilling rig is influenced, so that the deep soil taking work cannot be normally carried out, therefore, the overflow soil taking of the existing bored concrete pile soil taking equipment is carried out in a prefabrication, not only repeated soil taking operation is required for many times, but also the construction of the type of cross-pile is involved, and the field, the construction and management costs are increased, which is obviously contrary to the original intention of accelerating the construction period by using the precast pile, and a soil borrowing device suitable for the precast pile construction is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pile foundation equipment of fetching earth to it is low to fetch earth inefficiency in the current precast pile work progress to solve, construction cycle is long, the high problem of construction cost.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a pile foundation equipment of fetching earth, is including the barrel that is used for fetching earth, and the barrel is including the other end that is used for the descending in-process of barrel to supply the soil body to pass through to advance soil end and be located the barrel and send the tip with advancing soil end intercommunication, its characterized in that, the barrel includes that at least two coaxial covers are established and can be carried out the flexible sleeve pipe of axial.

Preferably, the sleeve comprises a peripheral sleeve and an inner side sleeve, an axial clamping table for preventing the inner side sleeve adjacent to the peripheral sleeve from falling off is formed on the inner wall of the peripheral sleeve, the inner side sleeve movably penetrates through the peripheral sleeve adjacent to the inner side sleeve along the axial direction, an anti-falling part reversely clamped with the axial clamping table is formed at one end of the inner side sleeve located inside the peripheral sleeve adjacent to the inner side sleeve, and the upper surface of the axial clamping table is matched with the lower surface of the anti-falling part in shape.

Preferably, the diameter of the outer sleeve decreases towards the inner sleeve, and the maximum outer diameter of the inner sleeve is larger than the minimum inner diameter of the outer sleeve.

Preferably, the soil body entering and preventing device further comprises an opening and closing mechanism for soil body entering and preventing soil body falling out.

Preferably, the opening and closing mechanism comprises a cover body which is rotatably connected with one end of the inner side sleeve and is detachably and fixedly connected with the other end of the inner side sleeve, a first baffle and a stop block are arranged in the cover body, and the first baffle is turned upwards under the thrust action of soil when the barrel body sinks, so that the soil enters the barrel body; when the barrel rises, under the action of the gravity of the soil body, the first baffle is turned downwards, and the stop block plays a supporting role in the first baffle, so that the soil body is prevented from being separated from the barrel.

Preferably, the mechanism that opens and shuts includes and rotates the lid of being connected other end detachable fixed connection with inboard sleeve pipe one end, sets up mount pad and second baffle in the lid, and the second baffle upwards slides under the effect of soil body thrust when the barrel sinks, supplies the soil body to get into in the barrel through the clearance between mount pad and the second baffle, and under the effect of soil body gravity when the barrel rises, second baffle slides downwards and the mount pad plays the supporting role to the second baffle, prevents that the soil body from deviating from the barrel.

Preferably, the mechanism that opens and shuts includes third baffle and locating part, and the third baffle is located the sheathed tube inner wall of inboard, and the locating part activity runs through inside sheathed tube inside and outside wall, and the third baffle upwards overturns under the soil body thrust effect when the barrel sinks, supplies the soil body to get into in the barrel, and under the soil body action of gravity when the barrel rises, the third baffle overturns downwards and the locating part plays the supporting role to the third baffle, prevents that the soil body from deviating from the barrel.

Preferably, the inner side sleeve comprises at least two opposite lifting parts for facilitating lifting and unloading soil, and the lifting parts are lifting rings or radial expansion parts.

Preferably, the device also comprises a protective wall coaxially sleeved outside the barrel for preventing the surrounding soil from collapsing, the protective wall and the barrel can synchronously stretch and descend, and when the protective wall and the barrel rise to be level with the soil layer or slightly lower than the top end of the soil layer, the upward traction of the protective wall is stopped, so that the barrel is separated from the protective wall.

Preferably, the device also comprises a guniting pipe which carries out guniting synchronously with the soil taking operation, the guniting pipe sprays slurry to fill a soil taking space below the soil taking operation so as to prevent surrounding soil from collapsing, and the guniting pipe is arranged on the outer wall of the inner side sleeve or on the inner wall of the inner side sleeve or in the barrel body.

The utility model provides a borrowing equipment has the sleeve pipe that can carry out relative axial is flexible, in current precast pile work progress, can increase and decrease sheathed tube quantity according to actual conditions, form the barrel of different specifications, improve the commonality of borrowing equipment, and borrowing equipment can once only accomplish the borrowing, avoid carrying out borrowing many times, improve borrowing efficiency, shorten the borrowing cycle, practice thrift construction cost, the operation of once only borrowing is the same basically with the operation of borrowing many times among the prior art simultaneously, need not to increase the operation degree of difficulty, improve the convenience of borrowing.

Drawings

Fig. 1 is a schematic structural view of an axial clamping table and an anti-slip part in a pile foundation soil sampling device disclosed in a first embodiment of the present invention;

fig. 2 is a schematic structural view of another axial clamping table and an anti-slip part in the pile foundation soil sampling device disclosed in the first embodiment of the present invention;

fig. 3 is a schematic structural view of another axial clamping table and an anti-slip part in the pile foundation soil sampling device disclosed in the first embodiment of the present invention;

fig. 4 is a schematic structural view of a cylinder in a pile foundation soil sampling device disclosed in a second embodiment of the present invention;

fig. 5 is a schematic structural view of an opening and closing mechanism in the pile foundation soil sampling device disclosed by the utility model;

fig. 6 is a schematic structural view of another opening and closing mechanism in the pile foundation soil sampling device disclosed by the utility model;

fig. 7 is a schematic structural view of another opening and closing mechanism in the pile foundation soil sampling device disclosed by the utility model;

fig. 8 is a schematic structural view of a further opening and closing mechanism in the pile foundation soil sampling device disclosed by the present invention;

fig. 9 is a schematic structural view of another opening and closing mechanism in the pile foundation soil sampling device disclosed by the utility model;

fig. 10 is a schematic structural view of a retaining wall in the pile foundation soil-taking device disclosed by the invention;

fig. 11 is a schematic structural view of a slurry feeding pipe in the pile foundation soil borrowing equipment disclosed by the utility model;

fig. 12 is a schematic structural view of a barrel conveying part in the pile foundation soil sampling device disclosed by the present invention;

fig. 13 is the utility model discloses a another kind of structural sketch map that send a section of thick bamboo portion in the equipment of pile foundation borrowing.

In the figure: 100. a barrel; 101. a soil inlet end; 102. a barrel conveying end; 103. a sleeve; 200. an axial clamping table; 300. an anti-drop part; 400. an opening and closing mechanism; 401. a cover body; 402. a first baffle plate; 403. a stopper; 404. a mounting seat; 405. a second baffle; 406. a third baffle plate; 407. a limiting member; 500. a lifting part; 600. protecting the wall; 700. a slurry feeding pipe; 800. a limit stop block; 900. a barrel conveying part; 901. a first connecting seat; 902. a second connecting seat; 903. a joining section; 904. a soil inlet; 905. and a fin.

Detailed Description

The soil sampling device in the scheme is used for soil sampling work in pile foundation construction, the soil sampling device mainly comprises a cylinder body 100 for sampling soil, an opening and closing mechanism 400 for soil entering and preventing soil from dropping, a cylinder delivery part 900 for being connected with an external power mechanism, the cylinder body 100 comprises at least two coaxially sleeved sleeves 103 capable of axially stretching, and the soil sampling device further comprises an axial clamping table 200 and an anti-dropping part 300 for preventing the inner sleeves 103 from dropping in two adjacent sleeves 103. In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Referring to fig. 1, fig. 1 is a schematic structural view of an axial clamping table and an anti-separation part in a pile foundation soil sampling device disclosed in a first embodiment of the present invention, which mainly comprises a barrel 100, an opening and closing mechanism 400, an axial clamping table 200 and an anti-separation part 300, wherein the barrel 100 comprises an earth inlet 101 for allowing an earth body to pass through in a descending process of the barrel 100 and a barrel conveying end 102 located at the other end of the barrel 100 and communicated with the earth inlet 101, and the number of sleeves 103 is three, the sleeves 103 are coaxially arranged and can axially extend and retract, according to an actual soil sampling condition, the sleeves of the sleeves 103 can be appropriately increased or decreased, wherein the volume of the barrel 100 is not less than the soil sampling amount, soil sampling can be completed at one time, soil sampling efficiency is improved, soil sampling period is shortened, construction cost is saved, in order to prevent an inner sleeve 103 in two adjacent sleeves 103 from falling off from the bottom of an outer sleeve 103, the sleeve 103 comprises a peripheral sleeve 103 and an inner sleeve 103, an axial clamping table 200 for preventing the inner sleeve 103 adjacent to the peripheral sleeve 103 from falling off is formed on the inner wall of the peripheral sleeve 103, an anti-falling part 300 reversely clamped with the axial clamping table 200 is formed at one end of the inner sleeve 103 located inside the peripheral sleeve 103 adjacent to the inner sleeve 103, the upper surface of the axial clamping table 200 is located on the same horizontal plane, the lower surface of the anti-falling part 300 is matched with the upper surface of the axial clamping table 200 in shape, and the opening and closing mechanism 400 comprises a cover body 401 which is rotatably connected with one end of the inner sleeve 103 and is detachably and fixedly connected with the other.

Referring to fig. 2, fig. 2 is a schematic structural view of another axial clamping table and an anti-separation part in a pile foundation soil sampling device disclosed in the first embodiment of the present invention, where fig. 2 is different from fig. 1 in that: in order to further improve the connection stability between two adjacent sleeves 103 and avoid the separation of the inner sleeve 103, a tapered cavity with a gradually decreasing diameter is formed on the inner wall of the axial clamping table 200 towards the bottom end face of the cylinder 100, and the separation preventing part 300 is changed to fit with the inner wall of the axial clamping table 200.

Referring to fig. 3, for the utility model discloses a structural schematic diagram of still another axial pallet and anticreep portion of pile foundation soil sampling equipment that first embodiment discloses, fig. 3 is different with fig. 1 in that: the end face of the axial clamping table 200 is provided with an annular clamping groove, an extension part at least partially clamped with the annular clamping groove is arranged along the periphery of the anti-falling part 300, and the stability of connection between two adjacent sleeves 103 is further improved through clamping of the extension part and the annular clamping groove.

The above axial locking stand 200 and the sleeve 103 and the retaining portion 300 and the sleeve 103 may be integrally formed or may be separately provided, and then fixedly connected together by welding, locking, bonding, or the like, and at least one of the axial locking stand 200 and the retaining portion 300 is continuously provided.

Referring to fig. 5, fig. 6 and fig. 7, fig. 5 is a schematic structural diagram of an opening and closing mechanism in a pile foundation soil sampling device disclosed by the present invention; fig. 6 is a schematic structural view of another opening and closing mechanism in the pile foundation soil sampling device disclosed by the utility model; fig. 7 is the utility model discloses a structural schematic diagram of another mechanism that opens and shuts in pile foundation soil sampling equipment.

In order to facilitate soil unloading, the opening and closing mechanism 400 comprises a cover body which is rotatably connected with one end of the inner casing 103 and is detachably and fixedly connected with the other end, the detachable and fixed connection can be pin joint, clamping, insertion connection and the like, in order to facilitate soil entering the barrel 100 and prevent soil from falling out of the barrel 100, a first baffle 402 and a stop 403 are arranged in the cover body, the first baffle 402 is connected with a hinge part in the cover body 401, the hinge part can be positioned in the inner part and the side wall of the cover body 401, the corresponding stop 403 is arranged in the side wall and the middle part of the cover body 401, the stop 403 is positioned below the first baffle 402, the first baffle 402 turns upwards under the thrust of soil when the cover body 401 sinks, soil enters the barrel 100, the first baffle 402 turns downwards under the gravity of soil when the barrel 100 rises, and when the first baffle 402 turns to the horizontal position, the stop 403 supports the first baffle 402, the first apron 402 is prevented from tipping downward and thereby preventing soil from escaping the drum 100.

Referring to fig. 8, in order to facilitate soil unloading, the opening and closing mechanism 400 includes a cover body rotatably connected to one end of the inner casing 103 and detachably and fixedly connected to the other end of the inner casing, in order to facilitate soil entering the barrel 100 and prevent soil from coming off the barrel 100, a second baffle 405 capable of sliding up and down to form a gap is disposed in the cover body, the second baffle 405 is convenient for soil entering, and a mounting seat 404 for mounting the second baffle 405 is disposed in the cover body, the second baffle 405 slides up and down under the thrust action of the soil when the barrel 100 sinks, so that soil enters the barrel 100 through the gap between the mounting seat 404 and the second baffle 405, and when the barrel 100 rises, the second baffle 405 slides down and the mounting seat 404 supports the second baffle 405, thereby preventing soil from coming off the barrel 100.

Referring to fig. 9, in order to optimize the structure of the soil sampling device, the soil is convenient to enter the barrel 100 and prevent the soil from escaping from the barrel 100, and the soil is convenient to unload, the opening and closing mechanism 400 is arranged at the bottom end of the inner wall of the inner casing 103, the opening and closing mechanism 400 comprises a third baffle 406 and a limiting part 407, the third baffle 406 is located on the inner wall of the inner casing 103, the limiting part 407 movably penetrates through the inner wall and the outer wall of the inner casing 103, the third baffle 406 is turned upwards under the thrust action of the soil when the barrel 100 sinks, the soil is supplied to enter the barrel 100, and under the gravity action of the soil when the barrel 100 rises, the third baffle 406 is turned downwards and the limiting part 407 supports the third baffle 406, so that the soil is prevented from escaping from.

Referring to fig. 1, the inner wall of the inner casing 103 is provided with at least one pair of lifting portions 500, the lifting portions 500 are connected with a traction mechanism of an external power mechanism through a connecting rope such as a steel wire rope, so that the inner casing 103 is lifted upwards, soil in the casing 103 is separated, soil unloading work is facilitated, and the lifting portions 500 can be of a hanging ring or a radially expanded part and the like and are connected with the connecting rope conveniently.

Referring to fig. 10, in order to prevent the surrounding soil from collapsing and ensure the safety of soil sampling, a retaining wall 600 is coaxially sleeved outside the cylinder 100, the retaining wall 600 and the cylinder 100 may have the same or different structures, as long as synchronous telescopic lifting can be realized, and the retaining wall 600 is connected with the traction structure of an external power mechanism and detachably and fixedly connected through a locking structure (not shown in the figure),

the dado 600 can stretch out and draw back the lift in step with barrel 100 to when dado 600 rises to and the soil layer parallel and level or slightly be less than the soil layer top with barrel 100, disconnection drive mechanism and dado 600's connection, dado 600 stays around the soil body, can prevent around the soil body collapse, play the guard action, can play the supporting role again and be convenient for construction equipment to pass through.

Referring to fig. 11, in order to prevent the collapse of the surrounding soil body during soil sampling, a slurry feeding pipe 700 is arranged on the outer wall of the cylinder 100 or the inner wall of the cylinder 100 or the middle of the embedded cylinder 100, the slurry feeding pipe 700 is connected with an external slurry conveying mechanism, during soil sampling, soil sampling and slurry spraying are performed synchronously, and slurry sprayed from the slurry feeding pipe 700 fills the soil sampling space below the soil sampling to prevent the soil body from collapsing.

Referring to fig. 3 and 4, in order to prevent the inner sleeve 103 from separating from the outer sleeve 103, a limit stop 800 is disposed at the top end of the inner wall of the outer sleeve 103 or the bottom end of the outer wall of the inner sleeve 103, and the limit stop 800 may be in a ring shape or other shapes, and may be disposed continuously or discontinuously.

Referring to fig. 12, fig. 12 is a schematic structural diagram of a tube feeding portion in a pile foundation soil sampling device disclosed in the present invention, in order to conveniently feed the tube 100 into a soil sampling layer, the soil sampling device further includes a tube feeding portion 900, the tube feeding portion 900 includes a first connecting seat 901 having one end connected to the tube feeding end 102 of the tube 100, and a second connecting seat 902 having the other end connected to an external power mechanism, and in order to increase the soil sampling amount, a surrounding soil body is conveniently fed into the tube 100, the first connecting seat 901 and the second connecting seat 902 are transitionally connected by a connecting portion 903, the connecting portion 903 is a drill rod or a support frame, or other structures which play a supporting role and do not affect the soil body feeding from the upper portion of the tube 100, wherein when the connecting portion 903 is a drill rod, in order to conveniently feed the soil body on the upper portion and the side portion into the tube 100 from the upper portion, at least two side portions of the first connecting seat, at least one outer wall of the single soil inlet 904 is provided with a fin 905, when the barrel 100 ascends, the fin 905 accelerates soil to enter the barrel 100, and soil taking efficiency is improved.

When the barrel sending part 900 is a support frame, the upper part of the first connecting seat 901 is an opening structure, the support frame is composed of a plurality of support columns, and a gap exists between each support column, so that soil on the upper part and the side part can conveniently enter the barrel 100 through the gap between each support column and the corresponding support column and the opening structure of the first connecting seat 901.

When the retaining wall 600 is used for protection, an extension section which at least partially extends to the end face of the retaining wall 600 is arranged along the periphery of the first connecting seat 901 of the barrel part 900, so that the synchronous lifting of the retaining wall 600 and the barrel 100 is ensured.

The specific structure of the cartridge 100 will be described in detail below.

Example 1

Referring to fig. 1, 2 and 3, the soil sampler mainly comprises a cylinder 100 and an opening and closing mechanism 400, wherein the cylinder 100 comprises a soil inlet 101 for allowing soil to pass through during the downward movement of the cylinder 100 and a cylinder delivery end 102 located at the other end of the cylinder 100 and communicated with the soil inlet 101, the number of the sleeves 103 is three, two adjacent sleeves 103 are coaxially arranged and can axially extend and retract, the sleeves of the sleeves 103 can be appropriately increased or decreased according to the actual soil sampling condition, wherein the volume of the cylinder 100 is not less than the soil sampling amount, soil sampling can be completed at one time, soil sampling efficiency is improved, the soil sampling period is shortened, construction cost is saved, in order to prevent the inner sleeve 103 in the two adjacent sleeves 103 from falling off from the bottom of the outer sleeve 103, an axial clamping table 200 for preventing the inner sleeve 103 adjacent to the outer sleeve 103 from falling off is formed on the inner wall of the outer sleeve 103, an anti-falling part 300 for reversely clamping the axial clamping table 200 is formed at one end of the inner sleeve 103 located inside of the outer, the lower surface of the anti-slip part 300 is matched with the upper surface of the axial clamping table 200 in shape, and the opening and closing mechanism 400 comprises a cover body 401 which is rotatably connected with one end of the inner side sleeve 103 and detachably and fixedly connected with the other end of the inner side sleeve.

Example 2

Referring to fig. 4, embodiment 2 is a modification of embodiment 1, and differs from embodiment 1 in that: the barrel 100 is naturally clamped by utilizing a self conical structure, the axial clamping table 200 and the anti-falling part 300 are not required to be clamped, the structure is simple, the axial clamping table 200 and the anti-falling part 300 are prevented from being damaged, maintenance is not required, the service life of the barrel 100 is prolonged, the diameter of the peripheral sleeve 103 is gradually reduced towards the direction of the inner sleeve 103, and the maximum outer diameter of the inner sleeve 103 is larger than the minimum inner diameter of the peripheral sleeve 103.

In the above embodiment, the barrel 100 has the basic structure of the barrel 100 in the prior art, which is not shown, such as a drill bit.

In the above embodiment, the axial locking member 200 and the anti-slip member 300 may be used alone or in combination in the same cylinder 100, as long as they prevent the inner sleeve 103 from slipping off.

The soil sampling operation steps of the soil sampling device are as follows:

firstly, the retaining wall 600 and the cylinder 100 are synchronously pressed down to a certain soil taking depth through an external power mechanism, in the process of pressing down the cylinder 100, the first baffle 402 or the third baffle 406 turns upwards to form an opening under the upward acting force of the soil layer in the process of pressing down the cylinder 100 in fig. 5, 6, 7 and 9, soil enters the cylinder 100 from the bottom through the opening and closing mechanism 400, and the inner casing 103 shrinks into the outer casing 103 under the action of pressure in the process of pressing down.

Secondly, after the retaining wall 600 and the barrel 100 reach the soil taking depth, under the common use of a traction mechanism connected with the retaining wall 600 and a power mechanism connected with the barrel 100, the barrel 100 and the retaining wall 600 extend synchronously, are extruded to the surrounding soil body, enter the barrel 100 from the top through a soil inlet 904 or a gap between a support column and a support column of a support frame, and increase the soil taking amount, when the soil body in the barrel 100 reaches a certain amount, under the action of the gravity of the soil body, the first baffle 402 or the third baffle 406 turns downwards to be turned over to the upper side of the stopper 403 or the limiting piece 407, and the stopper 403 or the limiting piece 407 plays a supporting role on the first baffle 402 or the third baffle 406, so that the first baffle 402 or the third baffle 406 is prevented from further turning downwards, and the soil body is prevented from falling out of the barrel 100.

Then, when the retaining wall 600 and the cylinder body 100 extend to be flush with the soil layer, the traction mechanism is disconnected from the retaining wall 600, then the cylinder body 100 is taken out from the retaining wall 600 through the power mechanism, the soil taking process is completed, the specified soil taking amount can be completed by taking soil once, the soil taking is avoided from being carried out for multiple times, and the soil taking efficiency is improved.

In fig. 5, 6, and 7, when the soil unloading operation is performed, the locking structure (not shown in the figures) connecting the cylinder 100 and the cover 401 is opened, so that the cover 401 is turned over, the traction mechanism connected to the lifting part 500 drives the inner sleeve 103 to move toward the outer sleeve 103, the soil unloading operation is performed, the soil unloading operation is completed, and the cover 401 is closed to perform the next soil taking operation.

In fig. 9, when the soil unloading operation is performed, the limiting member 407 is pulled out, the third baffle 406 is turned downward under the action of the gravity of the soil body, the traction mechanism connected to the lifting portion 500 drives the inner casing 103 to move in the direction of the outer casing 103, the soil unloading is performed, the soil unloading is completed, the limiting member 407 is inserted after the third baffle 406 is turned upward, the limiting member 407 supports the third baffle 406, the third baffle 406 is prevented from being turned downward, and the next soil taking operation is performed.

When the slurry feeding pipe 700 is used for replacing the retaining wall 600, the operation of the retaining wall 600 is omitted as the basic operation of the retaining wall 600, soil taking and slurry spraying are carried out synchronously in the soil taking process, and slurry fills the soil taking space below the soil taking, so that collapse accidents of the surrounding soil body are prevented.

When the opening and closing mechanism 400 is shown in fig. 8, the difference between the soil sampling operation and other opening and closing mechanisms 400 is: in the process that the cylinder body 100 is pressed downwards, the second baffle 405 slides upwards under the upward acting force of the soil layer, a soil inlet gap exists between the second baffle 405 and the inner wall of the mounting seat 404, soil enters the cylinder body 100 from the bottom through the gap, when the soil in the cylinder body 100 reaches a certain amount, the second baffle 405 slides downwards under the action of gravity of the soil, the outer wall of the second baffle 405 is attached to the inner wall of the mounting seat 404, the soil is prevented from leaking, and the soil unloading operation is the same as the operation in the figures 5, 6 and 7.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a pile foundation equipment of fetching earth, its characterized in that, is including the barrel that is used for fetching earth, and the barrel is including the soil end that advances that is used for the descending in-process of barrel to supply the soil body to pass through and be located the other end of barrel and with advance the soil end of sending that the end communicates mutually, the barrel includes that at least two coaxial covers are established and can carry out the flexible sleeve pipe of axial.

2. The pile foundation soil sampling device according to claim 1, wherein the casing comprises a peripheral casing and an inner casing, an axial blocking platform for preventing the inner casing adjacent to the peripheral casing from falling off is formed on the inner wall of the peripheral casing, the inner casing movably penetrates through the peripheral casing adjacent to the inner casing in the axial direction, an anti-falling part for reversely blocking the axial blocking platform is formed at one end of the inner casing inside the peripheral casing adjacent to the inner casing, and the shape of the upper surface of the axial blocking platform is matched with the shape of the lower surface of the anti-falling part.

3. A pile foundation soil sampling device according to claim 2 wherein the diameter of said outer casing decreases towards said inner casing, the maximum outer diameter of the inner casing being greater than the minimum inner diameter of the outer casing.

4. The pile foundation soil sampling device of claim 1, further comprising an opening and closing mechanism for soil body entry and prevention of soil body emergence.

5. The pile foundation soil sampling device according to claim 4, wherein the opening and closing mechanism comprises a cover body which is rotatably connected with one end of the inner casing pipe and is detachably and fixedly connected with the other end of the inner casing pipe, a first baffle plate and a stop block are arranged in the cover body, and the first baffle plate is turned upwards under the thrust action of soil when the barrel body sinks, so that soil enters the barrel body; when the barrel rises, under the action of the gravity of the soil body, the first baffle is turned downwards, and the stop block plays a supporting role in the first baffle, so that the soil body is prevented from being separated from the barrel.

6. The pile foundation soil sampling device of claim 4, wherein the opening and closing mechanism comprises a cover body which is rotatably connected with one end of the inner casing pipe and is detachably and fixedly connected with the other end of the inner casing pipe, a mounting seat and a second baffle plate are arranged in the cover body, the second baffle plate slides upwards under the thrust action of soil when the barrel body sinks, soil enters the barrel body through a gap between the mounting seat and the second baffle plate, and the second baffle plate slides downwards and supports the second baffle plate under the gravity action of soil when the barrel body rises to prevent the soil from falling out of the barrel body.

7. The pile foundation soil sampling device of claim 4, wherein the opening and closing mechanism comprises a third baffle plate and a limiting member, the third baffle plate is located on the inner wall of the inner sleeve, the limiting member movably penetrates through the inner wall and the outer wall of the inner sleeve, the third baffle plate is turned upwards under the thrust action of soil when the barrel body sinks, soil enters the barrel body, the third baffle plate is turned downwards under the gravity action of soil when the barrel body rises, the limiting member supports the third baffle plate, and the soil is prevented from being taken out of the barrel body.

8. The pile foundation soil sampling device of claim 1, further comprising at least two oppositely arranged lifting portions for facilitating lifting and soil unloading located on the inner wall of the inner casing, wherein the lifting portions are lifting rings or radial expansion portions.

9. The pile foundation soil sampling device of claim 1, further comprising a retaining wall coaxially sleeved outside the cylinder body for preventing surrounding soil from collapsing, wherein the retaining wall and the cylinder body can synchronously extend and retract, and when the retaining wall and the cylinder body rise to be flush with the soil layer or slightly lower than the top end of the soil layer, upward traction of the retaining wall is stopped, so that the cylinder body is separated from the retaining wall.

10. The pile foundation soil sampling device of claim 1, further comprising a slurry spraying pipe for spraying slurry in synchronization with the soil sampling operation, wherein the slurry sprayed from the slurry spraying pipe fills the soil sampling space below the soil sampling pipe to prevent the surrounding soil from collapsing, and the slurry spraying pipe is disposed on the outer wall of the inner casing pipe or on the inner wall of the inner casing pipe or in the barrel.

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