CN118958288B - A device and method for removing pipe piles of cofferdams in a lake crossing project - Google Patents
A device and method for removing pipe piles of cofferdams in a lake crossing project Download PDFInfo
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- CN118958288B CN118958288B CN202411433294.7A CN202411433294A CN118958288B CN 118958288 B CN118958288 B CN 118958288B CN 202411433294 A CN202411433294 A CN 202411433294A CN 118958288 B CN118958288 B CN 118958288B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 185
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- 239000002689 soil Substances 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 13
- 239000002344 surface layer Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- -1 and meanwhile Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention provides a device and a method for removing a cofferdam pipe pile in a lake crossing engineering, belongs to the technical field of pile pipe removal in earthwork, and is used for solving the problem of how to pull out the pipe pile after cofferdam construction in the prior art. The device comprises a carrier, a loosening and twisting mechanism and a pulling-out mechanism, wherein the carrier floats on the water surface, the loosening and twisting mechanism comprises a loosening and twisting shell, a tightening hoop and a loosening and twisting cylinder, the loosening and twisting shell is connected to the edge of the carrier through a lifting structure, the tightening hoop is rotationally arranged in the loosening and twisting shell, two ends of the loosening and twisting cylinder are respectively hinged to the inner wall of the loosening and twisting shell and the outer wall of the tightening hoop, the tightening hoop is driven to reciprocally twist when the loosening and twisting cylinder reciprocally stretches, the pulling-out mechanism comprises a pulling-out shell and a pulling-out cylinder, the shell of the pulling-out cylinder is fixedly connected to the loosening and twisting shell, the pulling-out shell is arranged on a telescopic shaft of the pulling-out cylinder, and the tube pile on the inner side of the pulling-out shell is pulled out. The device combines the method to make the construction process simple, convenient and quick, and provides convenience and flexibility for dismantling the cofferdam engineering tubular pile.
Description
Technical Field
The invention belongs to the technical field of pile pipe removal in earthwork, and particularly relates to a device and a method for removing a cofferdam pipe pile in a lake crossing project.
Background
Construction of a cross-lake cofferdam is a key technology in water area operation, and aims to create an anhydrous construction environment. At the initial stage of construction, two rows of steel pipe piles are respectively driven into two sides of a region to be constructed in the lake body, so that a stable enclosure structure is formed. Geogrid, geotextile and waterproof structure are arranged between two rows of steel pipe piles on the same side, gaps are effectively plugged, and waterproof performance is enhanced. And dense soil is filled between the double piles to form a water-proof weir core, so that the construction area is ensured to isolate water bodies.
Two groups of steel pipe pile cofferdams are paved on two sides of a construction area, and once the construction is completed, water pumping operation is started, lake water in the area is drained rapidly, and conditions are created for subsequent operation. After bridge pile foundations, underwater tunnels or other engineering construction in a construction area are finished and the structure is stable, a cofferdam is required to be removed to recover water, and meanwhile, steel pipe piles are recovered for reuse, so that resource circulation is realized. There is thus a need for an apparatus for extracting the piles of a cofferdam.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a device and a method for removing a pile of a cofferdam in a lake crossing engineering, which are used for solving the problem of how to pull out the pile after the construction of the cofferdam in the prior art is finished.
To achieve the above and other related objects, the present invention provides a device and method for removing a cofferdam pipe pile for a lake crossing project.
Wherein, a river crossing engineering cofferdam tubular pile remove device:
the device comprises a carrier, a loosening and twisting mechanism and a pulling mechanism, wherein the carrier floats on the water surface;
The loosening and twisting mechanism comprises a loosening and twisting shell, a tightening hoop and a loosening and twisting cylinder, the loosening and twisting shell is connected to one side edge of the carrier through a lifting structure, the tightening hoop is rotatably arranged in the loosening and twisting shell, two ends of the loosening and twisting cylinder are respectively hinged to the inner wall of the loosening and twisting shell and the outer wall of the tightening hoop, the loosening and twisting cylinder drives the tightening hoop to twist in a reciprocating manner when in reciprocating extension, and the inside of the tightening hoop is provided with a reducing mechanism for loosening and twisting the pipe pile;
The pulling mechanism comprises a pulling shell and a pulling cylinder, the shell of the pulling cylinder is fixedly connected with the loosening and twisting shell, the pulling shell is arranged on a telescopic shaft of the pulling cylinder, the telescopic direction is parallel to the axis of the tightening ring, and a clamping mechanism is arranged on the inner side of the pulling shell and used for loosening and tightening the pipe pile;
The clamping mechanism and the clamping area of the reducing mechanism are concentric.
Optionally, the lifting structure comprises a lifting cylinder and a first bracket;
the first bracket comprises two opposite branch brackets, and the loosening and twisting shell is positioned in the middle area of the two branch brackets;
A cylindrical rod is arranged at the contact part of the loosening and twisting shell and the branch frame, a lifting groove is arranged at the contact part of the branch frame and the loosening and twisting shell, and the direction of the lifting groove is parallel to the axis of the tightening ring;
the lifting cylinder is installed in the lifting groove, a matching ring is arranged at the tail end of an output shaft of the lifting cylinder, and a cylindrical rod on the loosening and twisting shell is in rotary fit with the matching ring.
Optionally, the reducing mechanism comprises a cavity arranged on the inner wall of the clamping ring, and a telescopic cylinder arranged in the cavity, wherein the telescopic direction of the telescopic cylinder points to the circle center along the radius, and the tail end of a telescopic shaft of the telescopic cylinder is provided with an arc-shaped clamping block;
or the reducing mechanism comprises a cavity arranged on the inner wall of the clamping ring, and a first flexible air bag arranged in the cavity, wherein an arc-shaped clamping block is arranged on the surface layer of one side of the first flexible air bag, which faces the circle center.
Optionally, a penetrating area with a "U" shaped cross section is provided in the pull-out housing, and the clamping mechanism includes:
The second flexible air bag is arranged in the cavity, the surface layer of one side of the second flexible air bag, which faces the central area, is provided with an arc clamping area and a plane guiding area;
the arc clamping area is positioned at the inner side of the U-shaped opening of the pull-out shell, the central axis of the arc clamping area coincides with the axis of the tightening ring, and the surface layer of the arc clamping area is provided with an arc clamping block;
The plane guide area is positioned at one side of the U-shaped opening end of the pull-out shell and comprises plate-shaped guide blocks oppositely arranged on the surface of the second flexible air bag, and the two plate-shaped guide blocks are in a horn mouth shape.
Optionally, the surface layer of the arc-shaped clamping block is provided with a convex edge, and the axis of the convex edge is parallel to the axis of the tightening ring.
Optionally, the device further comprises a transverse placing mechanism for changing the pulled tubular pile from the vertical state to the transverse placing state.
Optionally, the transverse placing mechanism comprises a rail frame, a limiting ring and a driver;
One end of the steel rail frame is positioned in an area above the loosening and twisting mechanism, the other end of the steel rail frame is connected to the inner side of the carrier body structure, the area, above the loosening and twisting mechanism, of the steel rail frame is a straight section, the straight section is connected with the carrier body through an inclined section, the steel rail frame comprises two steel rails positioned on two sides of the loosening and twisting mechanism, and sliding grooves are formed in the steel rails;
The inner ring surface of the limiting ring is matched with the pipe pile in size, two sides of the outer ring surface are respectively provided with a convex sliding seat, the two sliding seats are respectively in sliding fit with sliding grooves on the steel rails at two sides, and the limiting ring slides along the steel rail frame;
The limiting frame is arranged at the tail end of the straight section and limits the limiting ring to be at the tail end of the straight section, a contact part between the limiting frame and the limiting ring is arranged at the limiting frame, a hole is formed in the limiting frame, and a matched protruding shaft is arranged on the limiting ring;
the driver is a winding motor arranged outside the limiting frame, a winding roll of the winding motor is connected with a guy cable, and the guy cable passes through a hole in the limiting frame and then is fixedly connected to the protruding shaft.
Optionally, the inner ring surface of the limiting ring is also provided with the reducing mechanism.
Optionally, the carrier is formed by a plurality of buoyancy tanks concatenation, the buoyancy tank includes two sets of, forms through connection structure connection between two sets of buoyancy tanks, connection structure sets up the bottom in the middle of two sets of buoyancy tanks, connection structure upside forms the ditch form structure, loose turn round mechanism and pull out the mechanism setting and be in ditch form structure department, horizontal put the mechanism setting and be in ditch form structure top.
The method for removing the cofferdam pipe pile of the over-the-lake engineering comprises the following steps:
In the initial state, a reducing mechanism in the loosening and twisting mechanism keeps a large caliber state, a pulling cylinder of a pulling mechanism is in a retracted state, a pulling shell of the pulling mechanism is in contact with the loosening and twisting mechanism, a clamping mechanism in the pulling shell is in a loose state, and a limiting ring of a transverse mechanism slides to the upper part of the loosening and twisting mechanism;
In a butt joint state, the carrier is adjusted to be at a position, the loosening and twisting mechanism and the pulling mechanism are positioned above the target tubular pile, the lifting structure drives the loosening and twisting shell and the pulling mechanism to move downwards, and the loosening and twisting mechanism and the pulling mechanism sleeve the top of the tubular pile;
In a loosening state, the diameter-changing mechanism of the loosening and twisting mechanism reduces the inner diameter of the tightening hoop ring and clamps the pipe pile, the loosening and twisting cylinder stretches back and forth and drives the tightening hoop ring to twist back and forth, and further drives the pipe pile to twist back and forth, and the bottom of the pipe pile is fixedly connected with the soil layer to loosen;
In the pulling state, a pulling cylinder of a pulling mechanism pushes a pulling shell to move downwards, a clamping mechanism of the pulling shell clamps the tubular pile, a reducing mechanism of a loosening and twisting mechanism increases the inner diameter of a tightening hoop and loosens the tubular pile, the pulling cylinder of the pulling mechanism pulls the pulling shell to move upwards and pull the tubular pile out for a distance, then the reducing mechanism of the loosening and twisting mechanism reduces the inner diameter of the tightening hoop and clamps the tubular pile, the clamping mechanism of the pulling shell loosens the tubular pile, the pulling cylinder of the pulling mechanism pushes the pulling shell to move downwards to prepare for the next pulling, and the pulling process is repeated;
In a horizontal state, the top of the pipe pile penetrates into the limiting ring, and meanwhile, after the bottom of the pipe pile is separated from a soil layer at the bottom of a lake, the pipe pile starts to be obliquely placed, a driver controls the sliding distance of the limiting ring on a steel rail frame through a guy cable, so that the oblique placing angle of the top of the pipe pile is controlled, the lower part of the pipe pile is controlled by a loosening and twisting mechanism and a pulling mechanism, the loosening and twisting mechanism and the pulling mechanism incline along with the pipe pile, and the pipe pile pulling and oblique placing are simultaneously carried out until the pipe pile is completely pulled out and horizontally placed in a ditch-shaped structure;
And (3) carrying out tubular pile separation, loading a long tube air bag from the end part of the tubular pile, filling air, enabling the tubular pile to float, connecting a cable to the tubular pile, pulling the cable from the shore, and pulling the tubular pile out of the trench-shaped structure and back to the shore for recycling.
As described above, the device and the method for removing the cofferdam pipe pile for the over-the-lake engineering have at least the following beneficial effects:
The device has the advantages of obvious low cost, greatly reduces the economic burden of project execution, is simple and convenient in implementation process, does not need to call a heavy crane to go deep into a water area, and obviously saves time and labor cost. The tubular pile pulling-out device is ingenious in design, low in height required by work, and capable of flexibly and efficiently completing tubular pile pulling-out operation even in an environment with limited upper space, and provides convenience and flexibility for cofferdam engineering.
Drawings
Fig. 1 shows an overall schematic of the present invention.
Fig. 2 is a schematic top view of the loosening and twisting mechanism of the present invention.
Fig. 3 shows a schematic view of the loosening and pulling mechanism of the present invention.
Fig. 4 is a schematic diagram showing the connection between the loosening and twisting mechanism and the carrier bracket according to the present invention.
Fig. 5 shows a schematic view of a reducing mechanism of the loosening and twisting mechanism of the present invention.
Fig. 6 shows a schematic drawing of the extraction mechanism of the present invention.
FIG. 7 is a schematic view of the invention including a traversing mechanism.
Fig. 8 is a schematic view showing a transverse state of the invention.
Fig. 9 is an enlarged view of a portion of fig. 8 at a in accordance with the present invention.
Fig. 10 is a schematic view of a construction scenario of the present invention.
The device comprises a carrier 1, a buoyancy tank 10, a ditch-shaped structure 12, a loosening and twisting mechanism 2, a loosening and twisting shell 20, a cylindrical rod 201, a tightening hoop 21, a loosening and twisting cylinder 22, a pulling mechanism 3, a pulling shell 30, a pulling cylinder 31, a steel rail frame 41, a sliding chute 411, a limiting frame 412, a limiting ring 42, a protruding shaft 422, a driver 43, a winding roll 433, a lifting cylinder 50, a matching ring 501, a branch frame 51, a lifting groove 511, a reducing mechanism 6, a first flexible air bag 60, an arc-shaped clamping block 601, a convex rib 6011, a clamping mechanism 7, a second flexible air bag 70, an arc-shaped clamping area 701, a plane guiding area 702, a land area 92, a lake water area 91 and a construction area 90.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to fig. 1 to 10. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The following examples are given by way of illustration only. Various embodiments may be combined and are not limited to only what is presented in the following single embodiment.
Referring to fig. 1-3, the embodiment of the invention provides a device for removing a cofferdam pipe pile in a lake crossing engineering, which comprises a carrier 1, a loosening and twisting mechanism 2 and a pulling-out mechanism 3, wherein the carrier 1 floats on the water surface (lake surface);
the loosening and twisting mechanism 2 can refer to fig. 2, and comprises a loosening and twisting shell 20, a tightening hoop ring 21 and a loosening and twisting cylinder 22, wherein the loosening and twisting shell 20 is connected to one side edge of the carrier 1 through a lifting structure, the loosening and twisting shell 20 can lift relative to the carrier 1, the tightening hoop ring 21 is rotationally arranged in the loosening and twisting shell 20, an annular sliding rail can be arranged on the inner side of the loosening and twisting shell 20, an annular sliding groove is arranged at the bottom of the tightening hoop ring 21 to be matched with the annular sliding rail for realizing rotation, two ends of the loosening and twisting cylinder 22 are respectively hinged to the inner wall of the loosening and twisting shell 20 and the outer wall of the tightening hoop ring 21, and the loosening and twisting cylinder 22 can be provided with a plurality of groups. The axial line of the loosening and twisting cylinder 22 can be parallel to the tangent line of the tightening hoop ring 21 at the beginning, the loosening and twisting cylinder 22 drives the tightening hoop ring 21 to twist reciprocally when telescoping reciprocally, the reducing mechanism 6 is arranged at the inner side of the tightening hoop ring 21 for loosening and tightening the pipe pile, and the pipe pile can adapt to the pipe piles with different calibers;
the pulling mechanism 3 can refer to fig. 3, and comprises a pulling housing 30 and a pulling cylinder 31, wherein the housing of the pulling cylinder 31 is fixedly connected with the loosening torque housing 20, the pulling housing 30 is arranged on a telescopic shaft of the pulling cylinder 31, the telescopic direction is parallel to the axis of the tightening ring 21, and a clamping mechanism 7 for loosening and tightening the pipe pile is arranged on the inner side of the pulling housing 30;
The clamping area of the clamping mechanism 7 and the clamping area of the reducing mechanism 6 are concentric, and the pipe pile passes through.
In the above embodiment, the main working steps of the pipe pile removing device are as follows, in combination with fig. 1 and 7, initially, the carrier 1 moves to an adjustment position, the tightening hoop 21 and the pulling-out casing 30 are located above the first pipe pile, then the tightening hoop 21 and the pulling-out casing 30 move downwards to cover the pipe pile, then the tightening hoop 21 clamps the pipe pile, but simultaneously the pulling-out casing 30 keeps a loosening state, the loosening cylinder 22 drives the tightening hoop 21 to do reciprocating torsion when the loosening cylinder stretches reciprocally, and then drives the pipe pile to do repeated torsion, so that the part of the bottom of the pipe pile inserted into the soil layer is loosened and separated from the soil layer, so that the interaction force between the pipe pile and the soil layer is reduced, finally, the pulling-out mechanism 3 moves downwards and holds the pipe pile tightly, the tightening hoop 21 loosens the pipe pile, then the pulling-out mechanism 3 moves upwards to pull out the pipe pile a distance, then the tightening hoop 21 holds the pipe pile tightly again after the pulling-out the pipe pile is loosened, the tightening hoop 21 loosens the pipe pile, the pipe pile is pulled out again, and the pulling-out mechanism 3 pulls out again. Repeating the above process until the tubular pile is pulled out completely.
The effect of the above embodiment is that the tubular pile pulling process is significantly optimized by the twisting-before-pulling mode of operation. Under the condition of not depending on a heavy crane and a large-scale carrier, the effective pulling-out of the tubular pile is realized, and the construction difficulty and cost are greatly reduced. Through the reciprocating twisting of the tightening hoop, the bottom of the pipe pile is separated from surrounding soil layers in advance, so that the resistance during pulling out is obviously reduced, the required pulling-out force is greatly reduced, and the damage to the bottom soil structure during direct pulling-out is avoided. The design not only simplifies the construction flow, but also simplifies the configuration of the construction machinery, does not need to additionally configure a heavy crane and a large-scale carrying ship, and further reduces the construction cost. In general, the device has the characteristics of high efficiency, economy and convenience, and provides a brand new solution for pipe pile removal operation in water area engineering.
In this embodiment, as shown in fig. 4, the lifting structure includes a lifting cylinder 50 and a first bracket;
The first bracket comprises two opposite branch brackets 51, the loosening and twisting shell 20 is positioned in the middle area of the two branch brackets 51, and the first bracket is fixedly arranged on the carrier body;
A cylindrical rod 201 is arranged at the contact part of the loosening and twisting shell 20 and the branch support 51, a lifting groove 511 is arranged at the contact part of the branch support 51 and the loosening and twisting shell 20, and the direction of the lifting groove 511 is parallel to the axis of the tightening hoop 21;
The lifting cylinder 50 is installed in the lifting groove 511, the end of the output shaft of the lifting cylinder 50 is provided with a matching ring 501, the cylindrical rod 201 on the loosening and twisting shell 20 is in running fit with the matching ring 501, and when the lifting cylinder 50 stretches, the loosening and twisting shell 20 is driven to lift along the direction of the lifting groove 511.
The lifting structure of the embodiment enables the loosening and twisting mechanism 2 and the pulling mechanism 3 to lift relative to the carrier, and has the main effect that the initial positions of the loosening and twisting mechanism 2 and the pulling mechanism 3 can be higher, particularly higher than the upper end part of the tubular pile in the lake as shown in fig. 7, so that the tubular pile can be sleeved when the lifting structure descends, and the subsequent twisting and pulling operations can be performed. The housing of the loosening and twisting mechanism 2 is rotatably connected to the first bracket via the cylindrical rod 201, so that the loosening and twisting mechanism 2 can be lifted and lowered, and can be turned over relative to the carrier body, and the function thereof will be described in addition.
Referring to fig. 5, the reducing mechanism 6 includes a cavity disposed on an inner wall of the tightening ring 21, where the cavity may be circumferentially provided with multiple groups, for example four groups, and further includes a telescopic cylinder mounted in the cavity, a telescopic direction of the telescopic cylinder points to a circle center along a radius, an arc-shaped clamping block 601 is disposed at an end of a telescopic shaft of the telescopic cylinder, and when the telescopic cylinder stretches out, the arc-shaped clamping block 601 approaches toward the center and clamps the pipe pile;
Or, the reducing mechanism 6 comprises a cavity arranged on the inner wall of the tightening ring 21, and a first flexible air bag 60 arranged in the cavity, wherein an arc-shaped clamping block 601 is arranged on the surface layer of one side of the first flexible air bag 60 facing the circle center, and when the first flexible air bag 60 is pressurized, the first flexible air bag 60 bulges so as to clamp the pipe pile.
The flexible air bag can use softer rubber, such as inner tube material of tyre, or nylon fiber material, and the clamping block can use harder rubber, such as outer tube material of tyre.
The design of the reducing mechanism in the embodiment realizes flexible clamping of the tubular pile by the clamping ring. Whether the arc-shaped clamping blocks are driven to be directly clamped through the telescopic cylinders or the first flexible air bags are utilized to be inflated and inflated to be indirectly clamped, the device can be effectively adapted to tubular piles with different diameters, and the applicability and the flexibility of the device are improved. The design simplifies the tubular pile clamping operation, improves the construction efficiency, and simultaneously reduces the risk of damage to the surface of the tubular pile
Referring to fig. 6, in this embodiment, a penetrating region with a "U" shaped cross section is disposed in the pull-out housing 30, and the clamping mechanism 7 includes:
The second flexible air bag 70 is arranged in the cavity, the surface layer of one side of the second flexible air bag 70, which faces the central area, is provided with an arc clamping area 701 and a plane guiding area 702, the shape of the second flexible air bag 70 is preset as shown in fig. 6, the second flexible air bag 70 is softer when not pressurized, the second flexible air bag is extruded to deform and harden after being pressurized, and tubular piles in the area are clamped;
The arc clamping area 701 is positioned at the inner side of the U-shaped opening of the extracting housing 30, the central axis of the arc clamping area 701 coincides with the axis of the fastening ring 21, and the surface layer of the arc clamping area 701 is provided with an arc clamping block 601;
the planar guiding area is located at one side of the U-shaped opening end of the pull-out casing 30, and comprises plate-shaped guiding blocks oppositely arranged on the surface of the second flexible air bag 70, wherein the two plate-shaped guiding blocks are in a horn mouth shape, and the guiding blocks can be made of metal materials.
Initially, the pull-out casing 30 may be located within the range of the pipe pile without being higher than the pipe pile as shown in fig. 7, and the pipe pile is allowed to enter the "U" shaped opening area of the pull-out casing 30 from the bell mouth shape by moving the carrier, and the second flexible air bag 70 is properly pressed to deform because the second flexible air bag 70 is not pressurized at this time, so that the pipe pile enters the arc-shaped clamping area 701 correspondingly, and then the second flexible air bag 70 is inflated and pressurized, the arc-shaped clamping area 701 can clamp the pipe pile, and the opening shape of the plane guiding area 702 can also limit the pipe pile from falling out. At this time, the loosening and twisting mechanism 2 moves downwards to sleeve the pipe pile, and performs the loosening and pulling actions described above.
The beneficial effects of the above embodiment are that, firstly, the U-shaped opening design of the pull-out casing 30 can be transversely sleeved on the pipe pile without being sleeved from top to bottom, so that the lifting stroke of the lifting structure connected to the loosening and twisting mechanism 2 when the loosening and twisting mechanism 2 and the pull-out mechanism 3 are sleeved on the pipe pile can be reduced, and secondly, the second flexible air bag 70 clamps the pipe pile through air pressure, and the second flexible air bag 70 fills the whole pull-out casing 30. When pulled out, the second flexible balloon 70 (pull-out housing 30) is moved down, inflated and embraces the pipe pile, and then the pull-out housing 30 and the pipe pile are lifted up by retraction of the pull-out cylinder 31. In this process, the inflated second flexible bladder 70 also generates a huge buoyancy force, and lifts the pipe pile upward together with the extracting cylinder 31, and the two together act to reduce the load of the extracting cylinder 31 by the buoyancy force, and can be extracted without using a large device such as a crane.
In summary, the beneficial effects of the embodiment are remarkable, the U-shaped opening design is adopted, the pipe pile is convenient to transversely sleeve, the lifting stroke is reduced, the operation efficiency is improved, and the mechanical complexity is simplified. The second flexible air bag clamps the tubular pile through air pressure, generates buoyancy in the pulling process, and works cooperatively with the pulling cylinder, so that the load of the pulling cylinder is effectively reduced, the pulling is easy to realize without the assistance of a crane, the operation difficulty is reduced, and the flexibility and the applicability are enhanced.
Further, the surface layer of the arc-shaped clamping block 601 is provided with the protruding ribs 6011, and the axis of the protruding ribs 6011 is parallel to the axis of the tightening ring 21, so that the clamping effect can be improved.
Referring to fig. 7-9, the embodiment further includes a transverse releasing mechanism for changing the pulled-out pipe pile from a vertical state to a transverse releasing state. The transverse placing mechanism comprises a rail frame 41, a limiting ring 42 and a driver 43;
One end of the steel rail frame 41 is positioned in the area above the loosening and twisting mechanism 2, the other end of the steel rail frame 41 is connected to the inner side of the body structure of the carrier 1, the area, above the loosening and twisting mechanism 2, of the steel rail frame 41 is a straight section, the straight section is connected with the body of the carrier 1 through an inclined section, the steel rail frame 41 comprises two steel rails positioned on two sides of the loosening and twisting mechanism 2, sliding grooves 411 are formed in the steel rails, and the steel rails are supported and reinforced through a plurality of second supports;
The size of the inner ring surface of the limiting ring 42 is matched with that of the pipe pile, two sides of the outer ring surface are respectively provided with a convex sliding seat, the two sliding seats are respectively in sliding fit with sliding grooves 411 on steel rails on two sides, the limiting ring 42 slides along the steel rail frame 41, the sliding seats can be cylindrical, and therefore the limiting ring 42 can turn around the axis of the sliding seats in the sliding process of the limiting ring 42 along the steel rail frame 41;
The tail end of the straight section is provided with a limiting frame 412, the limiting frame 412 limits the limiting ring 42 at the tail end position of the straight section, at the moment, the limiting frame 412 coincides with the axis of the tightening ring 21, the contact part of the limiting frame 412 and the limiting ring 42 is provided with a hole, and the limiting ring 42 is provided with a matched protruding shaft 422;
the driver 43 is a winding motor arranged outside the limiting frame 412, a winding roll 433 of the winding motor is connected with a guy cable, and the guy cable is fixedly connected to the protruding shaft 422 after passing through a hole in the limiting frame 412. The position of the restriction ring 42 on the rail frame 41 can be controlled by controlling the length of the stay by the winding motor.
In the above embodiment, the main working principle is that when the bottom of the pipe pile has been completely pulled out from the soil layer of the lake bottom (but still in the water), and the top of the pipe pile penetrates into the limiting ring 42, the pipe pile can incline and fall down along the rail frame 41 under the pushing action of external force, and the length of the guy cable is controlled by the winding motor so as to control the inclination angle of the pipe pile. In this process, the loosening and twisting mechanism 2 and the pulling mechanism 3 can also turn over along with the pipe pile, and just because the shell of the loosening and twisting mechanism 2 is rotationally connected with the matching ring 501 in the first support through the cylindrical rod 201, the loosening and twisting mechanism 2 can turn over relative to the carrier body, and then the pipe pile is horizontally arranged.
Further, the diameter-changing mechanism 6 is also provided on the inner circumferential surface of the restriction ring 42, and tubular piles of different diameters can be used. The carrier 1 is formed by splicing a plurality of buoyancy tanks 10, wherein the buoyancy tanks are multifunctional modularized watertight boxes, and four sides of the buoyancy tanks are provided with connecting devices, so that the buoyancy tanks have good interchangeability and can be combined into various floating structures, such as floating wharfs, floating trestle bridges, water operation platforms and the like. In this embodiment, as shown in fig. 8, the buoyancy tanks 10 include two groups, the two groups of buoyancy tanks 10 are connected by a connection structure, the connection structure is disposed at the bottom of the middle of the two groups of buoyancy tanks 10, a groove-shaped structure 12 is formed on the upper side of the connection structure, the loosening and twisting mechanism 2 and the pulling mechanism 3 are disposed at the groove-shaped structure 12, and the transverse mechanism is disposed above the groove-shaped structure 12.
In operation, the vehicle 1 (buoyancy tank 10) will have a portion of its draft, so that the connection between the two sets of buoyancy tanks will be below the water surface and water will be present in the gutter-like structure 12. The pipe pile is pulled out and horizontally placed, and finally the pipe pile is horizontally placed in the ditch-shaped structure 12 without falling into water, meanwhile, the loosening and twisting mechanism 2 and the pulling-out mechanism 3 can be turned over and restored to the original state, and the limiting ring 42 can return to the initial position, so that the next pipe pile is pulled out. While the tube stake in the channel structure 12 is simultaneously ready for removal. Not only has realized the tubular pile from vertical to horizontal conversion, has improved operating efficiency and security, has still reduced the height of whole mechanism of extracting through unique design. The improvement avoids the contact of the pulling mechanism with an upper bridge or other structures in the operation process, reduces potential risks and damages, and further ensures the construction safety and the smooth operation. Meanwhile, the modularized design of the buoyancy tank enhances the flexibility and adaptability of the equipment, so that the device can efficiently operate in various complex water operation environments.
The embodiment is an embodiment of a method for removing a cofferdam pipe pile in a lake crossing engineering, and is matched with the device for removing the cofferdam pipe pile in the lake crossing engineering.
For the convenience of understanding the present technical solution, referring to fig. 10, when a bridge or an underwater tunnel is required to be constructed in a lake water area of a land area 92, cofferdam construction is required. Specifically, the construction area 90 needs to erect piers or excavate underground tunnels, before formal construction, two groups of pipe piles are respectively inserted and driven at two sides of the construction area 90 in the water-saving area 91, then the two groups of pipe piles are filled with earth or other core materials to form a waterproof wall of the cofferdam, then the water-saving area is used for carrying out construction such as piers or tunnels, after construction is finished and the structure is stable, a plurality of pipe piles close to the shore are pulled out by a crane or other devices, the lake water is allowed to reenter the original pumping area (original construction area 90), and after the water level of the original construction area 90 is consistent with the water level of the lake water area 91, the pipe pile pulling operation is formally started. The pipe pile removing device is used for draining water from a position where the pipe piles are pulled out in advance, moves along the pipe pile distribution line and is pulled out one by one.
The method comprises the following steps:
In the initial state, the reducing mechanism 6 in the loosening and twisting mechanism 2 is kept in a large-caliber state, the pulling cylinder 31 of the pulling mechanism 3 is in a retracted state, the pulling shell 30 of the pulling mechanism 3 is in contact with the loosening and twisting mechanism 2, the clamping mechanism 7 in the pulling shell 30 is in a loose state, and the limiting ring 42 of the transverse mechanism slides to the upper side of the loosening and twisting mechanism 2;
In the butt joint state, the carrier 1 adjusts the position to enable the loosening and twisting mechanism 2 and the pulling mechanism 3 to be positioned above the target tubular pile, and the lifting structure drives the loosening and twisting shell 20 and the pulling mechanism 3 to move downwards, so that the loosening and twisting mechanism 2 and the pulling mechanism 3 are sleeved on the top of the tubular pile;
in the loosening and twisting state, the diameter-changing mechanism 6 of the loosening and twisting mechanism 2 reduces the inner diameter of the tightening hoop 21 and clamps the pipe pile, and the loosening and twisting cylinder 22 stretches back and forth and drives the tightening hoop 21 to twist back and forth, so that the pipe pile is driven to twist back and forth, and the bottom of the pipe pile is fixedly connected with the soil layer to loosen. The loosening and twisting mechanism flexibly adjusts the inner diameter of the tightening hoop through the reducing mechanism, effectively clamps the pipe pile, and cooperates with the reciprocating motion of the loosening and twisting cylinder to realize the reciprocating twisting of the pipe pile, so as to break the fixedly connecting effect of the bottom of the pipe pile and the soil layer, reduce the pulling force required during subsequent pulling out and reduce the damage to the soil layer structure at the bottom during pulling out;
In the pulled-out state, the pulling-out cylinder 31 of the pulling-out mechanism 3 pushes the pulling-out housing 30 to move downwards, the clamping mechanism 7 of the pulling-out housing 30 clamps the pipe pile, the reducing mechanism 6 of the loosening mechanism 2 increases the inner diameter of the tightening ring 21 and loosens the pipe pile, the pulling-out cylinder 31 of the pulling-out mechanism 3 pulls the pulling-out housing 30 to move upwards and pull out the pipe pile for a distance, then the reducing mechanism 6 of the loosening mechanism 2 reduces the inner diameter of the tightening ring 21 and clamps the pipe pile, the clamping mechanism 7 of the pulling-out housing 30 loosens the pipe pile, the pulling-out cylinder 31 of the pulling-out mechanism 3 pushes the pulling-out housing 30 to move downwards to be ready for the next pulling-out, and the pulling-out process is repeated. The pull-out housing 30 is a hollow housing, and an air bag is arranged in the hollow housing, so that the air bag can be pressurized to expand and clamp the tubular pile, and the load of the pull-out cylinder 31 can be reduced by utilizing buoyancy. The air bag is used as a clamping mechanism in the pulling mechanism, so that the clamping flexibility is enhanced, the load of the pulling cylinder 31 is reduced, the construction efficiency and safety are obviously improved, and the energy consumption and the operation difficulty are reduced by the design of the air bag;
In the horizontal state, the top of the pipe pile penetrates into the limiting ring 42, and meanwhile, after the bottom of the pipe pile is separated from the soil layer at the bottom of the lake, the pipe pile starts to be inclined, the driver 43 controls the sliding distance of the limiting ring 42 on the steel rail frame 41 through a guy rope, so that the inclined angle of the top of the pipe pile is controlled, the lower part of the pipe pile is controlled by the loosening and twisting mechanism 2 and the pulling-out mechanism 3, the loosening and twisting mechanism 2 and the pulling-out mechanism 3 incline along with the pipe pile, and the pipe pile pulling-out and inclined placing are performed simultaneously until the pipe pile is completely pulled out and horizontally placed in the ditch-shaped structure 12. The tubular pile is skillfully fused with the pulling out and the transverse placing, and the sliding of the limiting ring is accurately controlled through the driver, so that the tubular pile is stably and obliquely placed into the groove-shaped structure. The design obviously reduces the operation height, is particularly suitable for limited spaces such as under bridges and the like, and improves the safety and the efficiency. The transverse placing process is stable and controllable, the subsequent transportation is more convenient, and the construction flow is integrally optimized;
The pipe pile is carried away, a long barrel air bag is filled from the end of the pipe pile, air is filled into the long barrel air bag, the pipe pile can float, a cable is connected to the pipe pile, the cable is pulled from the shore, and the pipe pile is pulled out of the ditch-shaped structure 12 and pulled back to the shore for recovery. The novel mode of long-barrel air bags and cable traction is adopted, so that the tubular pile is efficiently transported from the carrier to the shore, a large transport ship is not needed, the cost is saved, and the operation is simple and convenient. The pile of tubular pile on the buoyancy tank carrier has been avoided to this scheme for the carrier body volume is small and exquisite, remove in a flexible way, and it is convenient to assemble and dismantle, has further reduced construction cost, has improved whole efficiency of construction and flexibility.
In summary, the invention effectively overcomes various disadvantages in the prior art, can produce beneficial technical effects, and has remarkable progress.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. The utility model provides a lake engineering cofferdam tubular pile remove device, its characterized in that:
The device comprises a carrier (1), a loosening and twisting mechanism (2) and a pulling mechanism (3), wherein the carrier (1) floats on the water surface;
The loosening and twisting mechanism (2) comprises a loosening and twisting shell (20), a tightening ring (21) and a loosening and twisting cylinder (22), wherein the loosening and twisting shell (20) is connected to one side edge of the carrier (1) through a lifting structure, the tightening ring (21) is rotatably arranged in the loosening and twisting shell (20), two ends of the loosening and twisting cylinder (22) are respectively hinged to the inner wall of the loosening and twisting shell (20) and the outer wall of the tightening ring (21), the loosening and twisting cylinder (22) drives the tightening ring (21) to do reciprocating twisting when in reciprocating extension, and a reducing mechanism (6) is arranged on the inner side of the tightening ring (21) and used for loosening and twisting pipe piles;
The pulling mechanism (3) comprises a pulling shell (30) and a pulling cylinder (31), the shell of the pulling cylinder (31) is fixedly connected with the loosening and twisting shell (20), the pulling shell (30) is arranged on a telescopic shaft of the pulling cylinder (31), the telescopic direction is parallel to the axis of the tight hoop (21), and a clamping mechanism (7) for loosening and tightening the pipe pile is arranged on the inner side of the pulling shell (30);
the clamping area of the clamping mechanism (7) and the clamping area of the reducing mechanism (6) are concentric;
the lifting structure comprises a lifting cylinder (50) and a first bracket;
The first bracket comprises two opposite branch brackets (51), and the loosening and twisting shell (20) is positioned in the middle area of the two branch brackets (51);
A cylindrical rod (201) is arranged at the contact position of the loosening and twisting shell (20) and the branch frame (51), a lifting groove (511) is arranged at the contact position of the branch frame (51) and the loosening and twisting shell (20), and the direction of the lifting groove (511) is parallel to the axis of the tightening ring (21);
The lifting cylinder (50) is arranged in the lifting groove (511), a matching ring (501) is arranged at the tail end of an output shaft of the lifting cylinder (50), and a cylindrical rod (201) on the loosening and twisting shell (20) is in running fit with the matching ring (501);
the horizontal placing mechanism is used for changing the pulled tubular pile from a vertical state to a horizontal placing state;
the transverse placing mechanism comprises a steel rail frame (41), a limiting ring (42) and a driver (43);
One end of the steel rail frame (41) is positioned in an area above the loosening and twisting mechanism (2), the other end of the steel rail frame is connected to the inner side of the body structure of the carrier (1), the area above the loosening and twisting mechanism (2) of the steel rail frame (41) is a straight section, the straight section is connected with the body of the carrier (1) through an inclined section, the steel rail frame (41) comprises two steel rails positioned on two sides of the loosening and twisting mechanism (2), and sliding grooves (411) are formed in the steel rails;
The inner ring surface of the limiting ring (42) is matched with the tubular pile in size, two sides of the outer ring surface are respectively provided with a convex sliding seat, the two sliding seats are respectively in sliding fit with sliding grooves (411) on the steel rails at the two sides, and the limiting ring (42) slides along the steel rail frame (41);
The tail end of the straight section is provided with a limiting frame (412), the limiting frame (412) limits the limiting ring (42) to be at the tail end position of the straight section, the contact part of the limiting frame (412) and the limiting ring (42) is provided with a hole, and the limiting ring (42) is provided with a matched protruding shaft (422);
The driver (43) is a winding motor arranged outside the limiting frame (412), a winding roll (433) of the winding motor is connected with a guy cable, and the guy cable passes through a hole in the limiting frame (412) and is fixedly connected to the protruding shaft (422).
2. A device for removing piles of a cofferdam in a lake-crossing engineering as set forth in claim 1, wherein:
The reducing mechanism (6) comprises a cavity arranged on the inner wall of the tightening ring (21), and a telescopic cylinder arranged in the cavity, wherein the telescopic direction of the telescopic cylinder points to the circle center along the radius, and the tail end of a telescopic shaft of the telescopic cylinder is provided with an arc-shaped clamping block (601);
Or the reducing mechanism (6) comprises a cavity arranged on the inner wall of the fastening ring (21), and a first flexible air bag (60) arranged in the cavity, wherein an arc-shaped clamping block (601) is arranged on the surface layer of one side of the first flexible air bag (60) facing the circle center.
3. A device for removing piles of a cofferdam for a river crossing engineering as set forth in claim 1, wherein said pull-out casing (30) has a through-section with a "U" shape, and said clamping mechanism (7) comprises:
The second flexible air bag (70) is arranged in the cavity, the opening of the second flexible air bag faces the cavity in the penetrating area, and an arc-shaped clamping area (701) and a plane guiding area (702) are arranged on the surface layer of one side of the second flexible air bag (70) facing the central area;
The arc-shaped clamping area (701) is positioned at the inner side of the U-shaped opening of the pull-out shell (30) and the central axis is coincident with the axis of the tightening ring (21), and the surface layer of the arc-shaped clamping area (701) is provided with an arc-shaped clamping block (601);
The plane guide area (702) is positioned at one side of the U-shaped opening end of the pull-out shell (30), and comprises plate-shaped guide blocks oppositely arranged on the surface of the second flexible air bag (70), and the two plate-shaped guide blocks are in a horn mouth shape.
4. A device for removing a pile of a cofferdam for a river crossing engineering as set forth in claim 2 or 3, wherein the surface layer of the arc-shaped clamping block (601) is provided with a convex ridge (6011), and the axis of the convex ridge (6011) is parallel to the axis of the tightening ring (21).
5. A device for removing a cofferdam pipe pile for a river crossing engineering according to claim 1, characterized in that the inner ring surface of the limiting ring (42) is also provided with the reducing mechanism (6).
6. The lake crossing engineering cofferdam pipe pile removing device according to claim 1, wherein the carrier (1) is formed by splicing a plurality of buoyancy tanks (10), the buoyancy tanks (10) comprise two groups, the two groups of buoyancy tanks (10) are connected through a connecting structure, the connecting structure is arranged at the bottom in the middle of the two groups of buoyancy tanks (10), a groove-shaped structure (12) is formed on the upper side of the connecting structure, the loosening and twisting mechanism (2) and the pulling mechanism (3) are arranged at the groove-shaped structure (12), and the transverse placing mechanism is arranged above the groove-shaped structure (12).
7. A method for removing a cofferdam pipe pile in a lake crossing engineering, which adopts the device for removing a cofferdam pipe pile in a lake crossing engineering according to claim 6, and is characterized by comprising the following steps:
In an initial state, a reducing mechanism (6) in the loosening and twisting mechanism (2) is kept in a large-caliber state, a pulling cylinder (31) of a pulling mechanism (3) is in a retracted state, a pulling shell (30) of the pulling mechanism (3) is in contact with the loosening and twisting mechanism (2), a clamping mechanism (7) in the pulling shell (30) is in a loose state, and a limiting ring (42) of a transverse mechanism slides to be above the loosening and twisting mechanism (2);
in a butt joint state, the carrier (1) is used for adjusting the position, the loosening and twisting mechanism (2) and the pulling mechanism (3) are positioned above the target tubular pile, the lifting structure drives the loosening and twisting shell (20) and the pulling mechanism (3) to move downwards, and the loosening and twisting mechanism (2) and the pulling mechanism (3) are sleeved on the top of the tubular pile;
In a loosening state, a reducing mechanism (6) of the loosening and twisting mechanism (2) reduces the inner diameter of the tightening hoop (21) and clamps the pipe pile, and a loosening and twisting cylinder (22) stretches back and forth and drives the tightening hoop (21) to twist back and forth so as to drive the pipe pile to twist back and forth, and the bottom of the pipe pile is fixedly connected with a soil layer to loosen;
In the pulling state, a pulling cylinder (31) of a pulling mechanism (3) pushes a pulling shell (30) to move downwards, a clamping mechanism (7) of the pulling shell (30) clamps the pipe pile, a reducing mechanism (6) of a loosening mechanism (2) increases the inner diameter of a tightening hoop (21) and loosens the pipe pile, the pulling cylinder (31) of the pulling mechanism (3) pulls the pulling shell (30) to move upwards and pull the pipe pile out for a certain distance, then the reducing mechanism (6) of the loosening mechanism (2) reduces the inner diameter of the tightening hoop (21) and clamps the pipe pile, the clamping mechanism (7) of the pulling shell (30) loosens the pipe pile, the pulling cylinder (31) of the pulling mechanism (3) pushes the pulling shell (30) to move downwards to prepare for next pulling, and the pulling process is repeated;
In a horizontal state, the top of the pipe pile penetrates into a limiting ring (42), and after the bottom of the pipe pile is separated from a soil layer at the bottom of a lake, the pipe pile starts to be inclined, a driver (43) controls the sliding distance of the limiting ring (42) on a steel rail frame (41) through a stay rope, so that the inclined angle of the top of the pipe pile is controlled, the lower part of the pipe pile is controlled by a loosening and twisting mechanism (2) and a pulling mechanism (3), the loosening and twisting mechanism (2) and the pulling mechanism (3) incline along with the pipe pile, and the pipe pile is pulled out and inclined until the pipe pile is pulled out completely and horizontally placed in a ditch-shaped structure (12);
the pipe pile is carried away, a long barrel air bag is filled from the end part of the pipe pile, air is filled into the long barrel air bag, the pipe pile can float, a cable is connected to the pipe pile, the cable is pulled from the shore, and the pipe pile is pulled out of the groove-shaped structure (12) and pulled back to the shore for recovery.
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| CN202411433294.7A CN118958288B (en) | 2024-10-15 | 2024-10-15 | A device and method for removing pipe piles of cofferdams in a lake crossing project |
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| CN202411433294.7A CN118958288B (en) | 2024-10-15 | 2024-10-15 | A device and method for removing pipe piles of cofferdams in a lake crossing project |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214005678U (en) * | 2020-12-16 | 2021-08-20 | 陕西建工第六建设集团有限公司 | Multifunctional pile extractor with protective cylinder |
| CN114703849A (en) * | 2022-04-27 | 2022-07-05 | 南京交通职业技术学院 | Pile pulling equipment based on dynamic and static force combination |
| CN114775603A (en) * | 2022-04-21 | 2022-07-22 | 浙江交工集团股份有限公司 | Hydraulic pile pulling device for limited space and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101062539B1 (en) * | 2010-02-03 | 2011-09-06 | 엄광수 | Steel pipe pile drawing machine |
| CN203947477U (en) * | 2014-07-22 | 2014-11-19 | 葛洲坝集团第五工程有限公司 | A kind of device that utilizes air bag to carry out Double-Wall Steel Boxed Cofferdam dismounting |
| CN106759340A (en) * | 2015-11-19 | 2017-05-31 | 重庆市金楠建筑有限责任公司 | Steel-pipe pile pile-pulling construction method and device in low spatial water |
| CN211735403U (en) * | 2020-02-13 | 2020-10-23 | 赵嬴 | Pile digging device for concrete pipe piles in constructional engineering |
| CN217580143U (en) * | 2022-07-05 | 2022-10-14 | 济南市水利工程服务中心 | Pile pulling equipment for hydraulic engineering |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214005678U (en) * | 2020-12-16 | 2021-08-20 | 陕西建工第六建设集团有限公司 | Multifunctional pile extractor with protective cylinder |
| CN114775603A (en) * | 2022-04-21 | 2022-07-22 | 浙江交工集团股份有限公司 | Hydraulic pile pulling device for limited space and construction method thereof |
| CN114703849A (en) * | 2022-04-27 | 2022-07-05 | 南京交通职业技术学院 | Pile pulling equipment based on dynamic and static force combination |
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