CN212477726U - Pile pulling sleeve - Google Patents

Abstract

The utility model relates to a pile pulling sleeve, which comprises a cylinder body and a bearing mechanism arranged on the cylinder body; the bearing mechanism is arranged at one end part of the cylinder body and comprises an installation hole arranged on the cylinder body and a bearing plate which penetrates through the installation hole and is connected to the cylinder body in a rotating manner along the axial direction of the cylinder body; at least two mounting holes are formed in the circumferential direction of the cylinder body, and the mounting holes are formed in the axial direction of the cylinder body; one suspended end of the bearing plate is always positioned in the cylinder body; when the bearing plate rotates to stop in the direction far away from the end part of the cylinder body, the outer wall of the bearing plate close to the suspended end of the bearing plate is abutted against the end part of the mounting hole; when the bearing plate rotates to stop towards the end part of the cylinder body, the outer wall of the bearing plate close to the rotating end of the bearing plate is abutted against the end part of the mounting hole. The utility model discloses pull out and set up the load board inside the stake cover tube, support the bottom of target stake to can together extract the pile body and the stake point of target stake, and accelerated the speed of pile pulling.

Description

Pile pulling sleeve

Technical Field

The utility model belongs to the technical field of the technique of pile pulling construction and specifically relates to a pile pulling sleeve is related to.

Background

In the process of city transformation, the pile body driven in during the original facility infrastructure needs to be pulled out. The types of the pile bodies comprise cast-in-place piles, precast piles and the like according to construction conditions, and comprise reinforced concrete piles, steel piles and the like according to materials.

In the pile pulling process of the reinforced concrete pile in the cast-in-place pile and the precast pile, a pile head needs to be clamped by using a clamping mouth, and then an upward acting force is applied to pull out a pile body (hereinafter referred to as a target pile) from a soil layer. The pile extraction process is very slow and difficult. Because the steel reinforcement cage in the bored concrete pile can not be transferred to the full length of pile body, at the pile pulling process, the tip region that keeps somewhere the steel reinforcement cage in the target pile is very easily cracked, leads to the pure concrete part that the target pile does not have the steel reinforcement cage to stay in the soil layer. In the later period, the soil can be kept in the soil layer only by the modes of flushing, crushing and the like. And in the pouring process of the immersed tube filling pile in the filling pile, the pile tip is placed at the bottommost part of the hole in an immersed tube mode in the pouring process, and then concrete is poured. This causes a problem that the pile tip remains in the soil during pile extraction and is difficult to remove at a later stage.

To solve this problem, it is necessary to provide a pile pulling sleeve capable of integrally pulling out a target pile (pile body and pile tip) and preventing the pile tip from remaining in the soil.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a pile pulling sleeve, it has the effect that can extract the bored concrete pile head.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a pile pulling sleeve comprises a cylinder body and a force bearing mechanism arranged on the cylinder body; the bearing mechanism is arranged at one end part of the cylinder body and comprises an installation hole arranged on the cylinder body and a bearing plate which penetrates through the installation hole and is connected to the cylinder body in a rotating manner along the axial direction of the cylinder body; the mounting holes are formed in the circumferential direction of the cylinder body, and the mounting holes are formed in the axial direction of the cylinder body;

the suspended end of the bearing plate is always positioned in the cylinder body; when the bearing plate rotates to stop in the direction far away from the end part of the cylinder body, the outer wall of the bearing plate close to the suspended end of the bearing plate is abutted against the end part of the mounting hole; when the bearing plate rotates to stop towards the end part of the cylinder body, the outer wall of the bearing plate close to the rotating end of the bearing plate is abutted against the end part of the mounting hole.

Through adopting above-mentioned technical scheme, when needs carry out the pile pulling, will pull out the one end of offering the mounting hole on the pile sleeve and downwards, throw into it outside the target pile. In the driving process, the suspended end of the bearing plate is always abutted against the top end of the mounting hole due to the extrusion force of the soil and the outer wall of the pile body. And (3) driving the pile pulling sleeve into a set elevation according to the original design drawing, and applying an upward acting force to the pile pulling sleeve. Along with the telescopic upward movement of pile pulling, the bearing plate can rotate downwards, and when the bearing plate contacts with the pile tip or the bottom end face of target pile (round pile, square pile and the like in the precast pile), along with the telescopic continuous upward movement of pile pulling, the bearing plate supports tightly with the mounting hole bottom. Then, as the pile extracting sleeve moves upwards, the target pile and the pile extracting sleeve move upwards synchronously.

Because the outer wall of bearing plate and stake point is contradicted, so can be pulled out simultaneously stake point with upper portion stake, avoided the stake point to be detained in the soil layer. In addition, in the pile pulling process, force is applied to the bottom of the target pile to pull the target pile out, so that the pile pulling efficiency can be improved. In the prior art, a pile head pile pulling mode is adopted, so that the steel bars at the pile head part are easily broken and the repeated operation is needed.

The present invention may be further configured in a preferred embodiment as: at least three mounting holes are uniformly arranged along the circumferential direction of the cylinder body.

By adopting the technical scheme, the uniformity of the stress of the bearing plate in the pile pulling process is improved, the uniformity of the upward acting force applied to the target pile by the bearing plate is improved, and the pile pulling efficiency is further improved.

The present invention may be further configured in a preferred embodiment as: the section of the bearing plate is enlarged from the suspended end to the end connected to the cylinder.

By adopting the technical scheme, the supporting force of the bearing plate on the target pile is improved, so that the service life of the bearing plate is prolonged.

The present invention may be further configured in a preferred embodiment as: reinforcing plates are welded on the inner wall of the barrel body around the corresponding mounting holes.

Through adopting above-mentioned technical scheme, reduce the barrel and appear stress concentration and lead to the probability of receiving the shear failure around the mounting hole.

The present invention may be further configured in a preferred embodiment as: the cylinder body is characterized in that the areas, located on two sides of the mounting hole, on the outer wall of the cylinder body are respectively fixed with an ear plate, the bearing plate is rotatably connected between the two ear plates through a pin shaft, and the connection between the pin shaft and the two ear plates can be detached.

By adopting the technical scheme, the bearing plate is convenient to mount and dismount, so that the bearing plates with different sizes can be replaced according to requirements. Meanwhile, due to the existence of the lug plates, a part of shearing force is shared by the cylinder body, so that the cylinder body is protected.

The present invention may be further configured in a preferred embodiment as: the clamping mechanism is additionally arranged in the middle of the barrel and comprises a movable hole formed in the side wall of the barrel and a clamping plate which penetrates through the movable hole and is connected to the barrel in a rotating mode along the axial direction of the barrel; the circumference of the cylinder body is provided with at least two movable holes, and the movable holes are formed along the axial direction of the cylinder body; when the clamping plate rotates to stop towards the direction departing from the mounting hole, the outer wall of the suspended end of the clamping plate is abutted against the end, departing from the mounting hole, of the movable hole; when the grip block rotates towards the mounting hole direction, before the grip block contradicts with the movable hole towards mounting hole one end, grip block drilling one end is contradicted with the target stake outer wall.

By adopting the technical scheme, in the pile pulling process, the clamping plate is tightly abutted to the outer wall of the target pile, and partial upward acting force is applied to the target pile, so that the acting force directly applied to the bearing plate is reduced, and the integral bearing range of the pile pulling is enlarged. Meanwhile, the target pile is positioned conveniently due to the clamping plate, and the probability of inclination of the target pile in the pile pulling process is reduced.

The present invention may be further configured in a preferred embodiment as: a water cutter ring is additionally arranged at one end of the cylinder body close to the mounting hole, and the water cutter ring is arranged along the circumferential direction of the cylinder body; the water cutter ring is arranged in a hollow manner, and a plurality of water outlet holes are formed in the side wall of the end face, facing the front end of the barrel, of the water cutter ring; one side of the water cutter ring departing from the water outlet hole is communicated with a water delivery pipe, and the water delivery pipe is axially arranged along the barrel and extends to one end of the barrel, which deviates from the mounting hole.

Through adopting above-mentioned technical scheme, will pull out the pile sleeve and squeeze into the soil layer in-process, carry water to the water sword circle through the raceway for thereby water is from apopore blowout speed that accelerates to pull out the pile sleeve speed of burying, can erode the soil between pile sleeve inner wall and the target pile outer wall simultaneously, thereby makes the frictional force between target pile and the soil reduce, the pile pulling in the later stage of being convenient for.

The present invention may be further configured in a preferred embodiment as: the water cutter ring is fixed on the inner wall of the cylinder body.

By adopting the technical scheme, the damage of soil outside the outer wall of the pile pulling sleeve to the water cutter ring is reduced in the process of driving the pile pulling sleeve into a soil layer.

The present invention may be further configured in a preferred embodiment as: a water purifying ring is additionally arranged at the middle position of the cylinder body, and is fixed along the circumferential direction of the cylinder body and communicated with a water delivery pipe; the water purifying ring is arranged in a hollow mode, and one side, which deviates from the cylinder body, of the water purifying ring is provided with a plurality of water spraying holes.

Through adopting above-mentioned technical scheme, the water that sprays and go out from purifying the water circle washes the outer wall of target stake to the adnexed soil of clearance target stake outer wall, the pile pulling in later stage of being convenient for.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the bearing plate is arranged in the pile pulling sleeve and supports the bottom of the target pile, so that pile heads of the cast-in-place piles can be pulled out together, and the pile pulling speed is increased;

2. the water knife ring is installed on the barrel, so that the speed of driving the pile pulling sleeve into the soil layer is increased, soil between the inner wall of the pile pulling sleeve and the outer wall of the target pile is cleaned, and the target pile can be pulled out conveniently in the later period.

Drawings

FIG. 1 is a schematic overall structure diagram of the first embodiment;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;

FIG. 5 is a schematic view of the overall structure of the second embodiment;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

FIG. 7 is a schematic view showing the overall structure of the third embodiment;

fig. 8 is a schematic view of the overall structure of the ear panel of fig. 7 after the ear panel has been tied with tensile wire.

In the figure, 1, a cylinder; 11. a reinforcing plate; 12. a reinforcing plate; 13. a hoisting ring; 14. reinforcing a steel plate; 2. a force bearing mechanism; 21. mounting holes; 22. a bearing plate; 221. stretching the filaments; 3. a connecting assembly; 31. an ear plate; 32. a pin shaft; 4. a water delivery pipe; 41. a water cutter ring; 411. a water outlet hole; 42. purifying a water ring; 421. a water spray hole; 5. a clamping mechanism; 51. a movable hole; 52. and (4) clamping the plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, for the utility model discloses a pile pulling sleeve, including barrel 1, load mechanism 2 and bath mechanism.

Referring to fig. 1 and 2, the cylindrical body 1 is a hollow steel pipe having both ends opened, and its sectional size is determined according to the section of a target pile.

With reference to fig. 3 and 4, the force bearing mechanism 2 is disposed at one end of the cylinder 1, and the force bearing mechanism 2 includes a mounting hole 21 and a force bearing plate 22. The mounting holes 21 are axially formed along the cylinder body 1, and three mounting holes 21 are uniformly arranged along the circumferential direction of the cylinder body 1.

The bearing plate 22 passes through the mounting hole 21, and the section of the bearing plate 22 is arranged from one end positioned inside the cylinder body 1 to one end outside the cylinder body 1 in an expanding way. The bearing plate 22 is positioned at one end outside the cylinder body 1 and is rotationally connected to the outer wall of the cylinder body 1 through the connecting component 3. The connecting assembly 3 comprises two lug plates 31 positioned at two sides of the mounting hole 21 and a pin shaft 32 penetrating through the two lug plates 31, and the connection between the pin shaft 32 and the two lug plates 31 can be detached. The bearing plate 22 is clamped between the two ear plates 31, and the pin shaft 32 penetrates through the bearing plate 22 at the same time, so that the bearing plate 22 can rotate along the axial direction of the cylinder 1. When the bearing plate 22 rotates to stop towards the far end of the cylinder body 1, the outer wall of the bearing plate 22 close to the suspended end of the bearing plate abuts against the end of the mounting hole 21; when the bearing plate 22 rotates to stop towards the closer end of the cylinder 1, the outer wall of the bearing plate 22 close to the rotating end of the bearing plate butts against the end of the mounting hole 21, and the side wall of the bearing plate 22 close to the cylinder 1 is perpendicular to the inner wall of the cylinder 1.

In order to improve the structural strength of the edge area of the corresponding mounting hole 21 on the cylinder body 1 and reduce the probability of shearing damage, reinforcing structures are arranged on the inner wall and the outer wall of the cylinder body 1. The inner wall of the cylinder 1 is welded with a reinforcing plate 11 corresponding to the area around the mounting hole 21. The four reinforcing plates 11 are integrated, and the centers of the four reinforcing plates are arranged in the corresponding pore passages of the mounting holes 21. The position that corresponds mounting hole 21 on the outer wall of barrel 1 covers has a gusset plate 12, and the pore that corresponds with mounting hole 21 is seted up at gusset plate 12 center, and two otic placodes 31 weld in gusset plate 12 surfaces, and gusset plate 12 edge welds in barrel 1 surface. Meanwhile, when the reinforcing plate 11 and the reinforcing plate 12 are arranged to enable the bearing plate 22 to rotate to the end of the mounting hole 21 and to be perpendicular to the inner wall of the cylinder 1, the inner walls of the reinforcing plate 11, the reinforcing plate 12 and the mounting hole 21 can form a support of the bearing plate 22, and the bearing plate 22 is better limited.

The flushing mechanism is used for driving the cylinder body 1 into a soil layer conveniently and cleaning soil between the inner wall of the cylinder body 1 and the outer wall of the target pile simultaneously. The flushing mechanism comprises a water delivery pipe 4 arranged inside the barrel 1, a water cutter ring 41 and a purified water ring 42. The water pipe 4 is welded on the inner wall of the barrel 1 along the axial direction of the barrel 1, and one end of the water pipe extends out of the end face of the barrel 1 far away from the mounting hole 21.

The water cutter ring 41 and the water purification ring 42 are both circular tubes connected end to end, and the water cutter ring 41 is provided with water outlets 411 uniformly distributed along the circumferential direction of the cylinder 1 towards one side of the end surface of the cylinder 1 close to the mounting hole 21, and the water spray holes 421 uniformly distributed along the circumferential direction of the cylinder 1 are provided on one side of the water purification ring 42 away from the cylinder 1. The water cutter ring 41 is welded on the inner wall of the barrel 1 near one end of the mounting hole 21, and the water cutter ring 41 is communicated with the end part of the water pipe 4. The water purifying ring 42 is welded at the position of the middle part of the cylinder 1, which is located at the position 1m above the water knife ring 41, and meanwhile, the water purifying ring 42 is located above the mounting hole 21, and the middle parts of the water purifying ring 42 and the water delivery pipe 4 are communicated. During operation, water is sprayed out from the water outlet holes 411 of the water cutter ring 41, so that the barrel 1 can be conveniently driven into the soil layer, and meanwhile, the water is sprayed out from the water spraying holes 421 of the purified water ring 42 to wash the outer wall of the target pile.

In order to facilitate the hoisting and moving of the barrel body 1, hoisting rings 13 are respectively welded on the outer walls of the two ends of the barrel body 1, and reinforcing steel plates 14 are welded on the inner wall of the barrel body 1 at positions corresponding to the hoisting rings 13.

The implementation principle of the embodiment is as follows:

s1, selecting the size of the cylinder 1 according to the size of the target pile, lofting the construction site, and determining the driving position of the cylinder 1;

s2, connecting a water pump on the water delivery pipe 4 of the cylinder 1, enabling the mounting hole 21 of the cylinder 1 to face downwards, clamping the cylinder 1 to a soil layer driven into the outer part of the target pile, and delivering water to the water cutter ring 41 and the purified water ring 42 by using the water pump; in the driving process of the cylinder 1, under the extrusion of a soil layer, the suspended end of the bearing plate 22 is always upward and is spaced from the outer wall of the target pile;

s3, when the barrel 1 is driven to the designed elevation, the water pump is closed; applying lifting acting force on the cylinder 1 until the bearing plate 22 is tightly propped against the pile tip or the pile end, so that the bearing plate 22 rotates to a position vertical to the axis of the cylinder 1 in a suspending way; and continuously lifting the cylinder body 1 and the target pile out of the soil layer.

In the actual pile pulling process, the target pile can be pulled out simultaneously. After the soil between the target pile and the inner wall of the barrel body 1 is removed by water, the target pile is weakly connected with the soil layer in front, and can be conveniently pulled out.

Example two:

with reference to fig. 5 and 6, for the utility model discloses a pile pulling sleeve, the only difference with the first embodiment is that a clamping mechanism 5 is additionally arranged at the middle position of the barrel 1.

The chucking mechanism 5 includes a movable hole 51 and a chucking plate 52.

The movable holes 51 are axially arranged along the cylinder 1, and three movable holes 51 are uniformly arranged along the circumferential direction of the cylinder 1.

The holding plate 52 passes through the movable hole 51, and the section of the holding plate 52 is enlarged from the end located inside the cylinder 1 to the end located outside the cylinder 1. The clamping plate 52 is located at one end of the outer portion of the cylinder 1 and is rotatably connected to the outer wall of the cylinder 1 through the connecting assembly 3 in the first embodiment, and the specific structure of the connecting assembly 3 is not described herein.

The length of the clamping plate 52 is less than the length of the force bearing plate 22. When the clamping plate 52 rotates to a stop in a direction away from the mounting hole 21, the outer wall of the suspended end of the clamping plate 52 is abutted against the end of the movable hole 51 away from the mounting hole 21. When the clamping plates 52 rotate to stop towards the direction of the mounting hole 21, the outer wall of one end, close to the rotation end, of the clamping plate 52 is abutted against the end part of the movable hole 51, and the side wall, close to the end of the barrel 1, of the clamping plate 52 is perpendicular to the inner wall of the barrel 1, at the moment, the diameter of the circle where the suspended ends of the three clamping plates 52 are located is smaller than that of the target pile, and the range can be 3cm-8 cm. With the arrangement, when the clamping plate 52 rotates towards the direction of the installation hole 21 during pile pulling, the drilled end of the clamping plate 52 abuts against the outer wall of the target pile before the clamping plate 52 abuts against the end of the movable hole 51 towards the installation hole 21.

Example three:

combine fig. 7 and fig. 8, do the utility model discloses a pile pulling sleeve, with embodiment one only difference lie in that three load plates 22 lie in the space outside that 1 outside one end of barrel extended to two otic placodes 31 of correspondence, and load plate 22 lies in the one end of 1 outside of barrel and has seted up the round hole. The round hole is bound with a tensile wire 221, and the tensile wire 221 can be a steel wire rope or other materials with strong toughness. The length of the tensile wire 221 is larger than that of the cylinder body 1, so that the end part of the tensile wire 221 is still positioned on the ground after the cylinder body 1 is driven into the soil layer.

When the barrel 1 is driven into a soil layer when encountering mucky soil or clay with high viscosity, the bearing plate 22 may not rotate downwards due to high viscosity of the soil in the lifting process of the barrel 1. At this time, the tensile wire 221 can be pulled to make the suspended end of the bearing plate 22 move downward and abut against the end of the mounting hole 21, so as to ensure that the bearing plate 22 can abut against the bottom of the target pile.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. The utility model provides a pile pulling sleeve which characterized in that: comprises a cylinder body (1) and a force bearing mechanism (2) arranged on the cylinder body (1); the bearing mechanism (2) is arranged at one end of the cylinder body (1), and the bearing mechanism (2) comprises a mounting hole (21) arranged on the cylinder body (1) and a bearing plate (22) which penetrates through the mounting hole (21) and is axially and rotatably connected to the cylinder body (1) along the cylinder body (1); at least two mounting holes (21) are formed in the circumferential direction of the cylinder body (1), and the mounting holes (21) are formed in the axial direction of the cylinder body (1);

the suspended end of the bearing plate (22) is always positioned in the cylinder body (1); when the bearing plate (22) rotates to stop towards the direction far away from the end part of the cylinder body (1), the outer wall of the bearing plate (22) close to the suspended end of the bearing plate is abutted against the end part of the mounting hole (21); when the bearing plate (22) rotates to stop towards the end part of the cylinder body (1), the outer wall of the bearing plate (22) close to the rotating end of the bearing plate is abutted against the end part of the mounting hole (21).

2. A pile driving sleeve according to claim 1, wherein: at least three mounting holes (21) are uniformly arranged along the circumferential direction of the cylinder body (1).

3. A pile driving sleeve according to claim 1, wherein: the section of the bearing plate (22) is enlarged from the suspended end to the end connected to the cylinder body (1).

4. A pile driving sleeve according to claim 1, wherein: reinforcing plates (11) are welded on the inner wall of the barrel body (1) and correspond to the peripheries of the mounting holes (21).

5. A pile driving sleeve according to claim 1, wherein: the cylinder body (1) is characterized in that the areas, located on two sides of the mounting hole (21), on the outer wall of the cylinder body (1) are respectively fixed with an ear plate (31), the bearing plate (22) is rotatably connected between the two ear plates (31) through a pin shaft (32), and the connection between the pin shaft (32) and the two ear plates (31) can be detached.

6. A pile driving sleeve according to claim 1, wherein: the clamping mechanism (5) is additionally arranged in the middle of the barrel (1), and the clamping mechanism (5) comprises a movable hole (51) formed in the side wall of the barrel (1) and a clamping plate (52) which penetrates through the movable hole (51) and is axially and rotatably connected to the barrel (1) along the barrel (1); the number of the movable holes (51) is at least two in the circumferential direction of the cylinder body (1), and the movable holes (51) are axially formed along the cylinder body (1); when the clamping plate (52) rotates to stop towards the direction departing from the mounting hole (21), the outer wall of the suspended end of the clamping plate (52) is abutted against one end, departing from the mounting hole (21), of the movable hole (51); when the clamping plate (52) rotates towards the direction of the mounting hole (21), before the clamping plate (52) and the movable hole (51) abut against one end of the mounting hole (21), one drilling end of the clamping plate (52) abuts against the outer wall of the target pile.

7. A pile driving sleeve according to claim 1, wherein: a water cutter ring (41) is additionally arranged at one end, close to the mounting hole (21), of the cylinder body (1), and the water cutter ring (41) is arranged along the circumferential direction of the cylinder body (1); the water cutter ring (41) is arranged in a hollow manner, and a plurality of water outlet holes (411) are formed in the side wall of the end face, facing the end face of the barrel body (1), of the water cutter ring (41); one side of the water knife ring (41) departing from the water outlet hole (411) is communicated with a water delivery pipe (4), and the water delivery pipe (4) is axially arranged along the barrel body (1) and extends to one end of the barrel body (1) departing from the mounting hole (21).

8. A pile driving sleeve according to claim 7, wherein: the water cutter ring (41) is fixed on the inner wall of the cylinder body (1).

9. A pile driving sleeve according to claim 7, wherein: a purified water ring (42) is additionally arranged at the middle position of the cylinder body (1), and the purified water ring (42) is fixed along the circumferential direction of the cylinder body (1) and is communicated with the water delivery pipe (4); the water purifying ring (42) is arranged in a hollow mode, and one side, which is far away from the cylinder body (1), is provided with a plurality of water spraying holes (421).

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