CN-121976531-A - Mud-cleaning pile-cutting equipment for waste pile foundation and construction method thereof

CN121976531ACN 121976531 ACN121976531 ACN 121976531ACN-121976531-A

Abstract

The invention discloses a mud-cleaning pile-cutting device for a waste pile foundation and a construction method thereof, wherein the device consists of a sleeve assembly, a hydraulic pile-cutting shearing mechanism and a dredging reamer assembly; the sleeve assembly comprises a cylindrical inner sleeve, the hydraulic pile cutting mechanism comprises hydraulic cutting equipment, the bottom of the hydraulic pile cutting mechanism is rotationally connected with a dredging reamer assembly through a rotary support, the dredging reamer assembly comprises a hollow support cylinder, a spiral reamer is arranged on the outer wall of the hollow support cylinder, a plurality of third overflow holes are formed in the cutter face at intervals, a plurality of shovel teeth are arranged on the end face of the tail end of the lower side of the spiral reamer, a tooth cutter with a plurality of shovel teeth is arranged on the outer wall of the support cylinder opposite to the spiral reamer, the old pile foundation can be cut to a designed elevation position at one time by the equipment and the cutting pile and the whole equipment are lifted and transported, so that construction procedures are reduced, equipment loss is reduced, operation efficiency is improved, and the hydraulic pile cutting mechanism can be widely applied to reconstruction, extension and upgrading and reconstruction of old wharfs and land waste structures.

Inventors

CHEN QIANG
HAO JIASHU
YAO LIANG
BAI SHILEI
YU HAICHAO
YAO SHUNYU
ZHU FUMIN
Chen Guanlu
WEI WEI
ZHANG DEQIANG
YI ZHEN
CHEN ZHIJIAN
YAN XINGHAO
HE FUBO

Assignees

天津港航工程有限公司

Dates

Publication Date: 20260505
Application Date: 20260325

Claims (10)

1. A mud-cleaning pile-cutting device for a waste pile foundation is characterized by comprising a sleeve assembly (1), a hydraulic pile-cutting shearing mechanism (2) and a mud-cleaning reamer assembly (3), wherein the sleeve assembly (1) comprises a cylindrical inner sleeve (102), the hydraulic pile-cutting shearing mechanism (2) comprises a hydraulic shearing device (201), the top side of the hydraulic pile-cutting shearing device is connected with the bottom end of the cylindrical inner sleeve (102), the bottom side of the hydraulic pile-cutting shearing mechanism is connected with a supporting cylinder (301) of the mud-cleaning reamer assembly (3) through a rotating mechanism, the supporting cylinder (301) is provided with a hollow side wall, a spiral reamer (302) is distributed on the outer wall of the supporting cylinder from top to bottom, a plurality of third through holes (305) are formed in the cutter surface at intervals from one end to the other end of the supporting cylinder, a plurality of first cutting blades (304) are arranged on the end surface of the lower side of the spiral reamer (302) at intervals, a plurality of first cutting blades (303) are arranged on the outer wall of the bottom side of the supporting cylinder (301) opposite to the plurality of first cutting blades (304), the cutting blades (303) are formed by conical cutters vertically fixed on the outer wall of the supporting cylinder (301) and a plurality of second cutting blades arranged on the cutter handle at intervals along the horizontal direction, and a plurality of second cutting blades (304) are arranged on the annular circumference surface of the second cutting blades (304) and a plurality of cutting blades) can be arranged on the annular surface of the first cutting blades and a plurality of cutting blades can be completely staggered.
2. The mud-cleaning pile-cutting device for waste pile foundations according to claim 1, wherein the sleeve assembly (1) further comprises a conical outer sleeve (101) which is sleeved outside the cylindrical inner sleeve (102) in an annular gap manner and fixedly connected with the cylindrical inner sleeve (102) through a plurality of connecting ribs arranged along the circumferential direction, and the outer diameter of the lower side of the conical outer sleeve (101) is matched with the outer diameter of the hydraulic pile-cutting shearing mechanism (2).
3. The mud-cleaning pile-cutting device for waste pile foundations according to claim 2, wherein the top side of the cylindrical inner sleeve (102) extends to the outer side of the conical outer sleeve (101), and two connecting lug plates (103) are symmetrically fixed on the outer wall of the top side of the cylindrical inner sleeve.
4. The mud-cleaning pile-cutting device for the waste pile foundation according to claim 1, wherein the hydraulic shearing device (201) comprises a cutter body, two sides of the cutter body are respectively arranged in horizontal guide grooves of two guide frames to slide back and forth in the horizontal direction, one end of the two guide frames is fixedly provided with a cutter holder and is opposite to the cutter edge side of the cutter body, the adjacent side of the cutter holder is provided with a cutter holder which comprises two pull rods, one ends of the two pull rods are fixedly connected to a connecting rod, the other ends of the two pull rods are respectively inserted into the horizontal guide grooves of the two guide frames and are fixedly connected with the cutter body, the two hydraulic cylinders are respectively fixed on the outer side surfaces of the two guide frames through cylinders, and the movable push rod ends of the two hydraulic cylinders are hinged with the two ends of the connecting rod to drive the cutter holder to drive the cutter body to move synchronously.
5. The mud-cleaning pile-cutting equipment for waste pile foundations according to claim 4, wherein an auxiliary guide frame is further fixed on the back side of the cutter holder, horizontal guide grooves are formed in two sides of the auxiliary guide frame and are communicated with the horizontal guide grooves of the guide frame, and two pull rods of the cutter frame are simultaneously inserted into the two horizontal guide grooves of the auxiliary guide frame.
6. The mud-cleaning pile-cutting equipment for the waste pile foundation according to claim 1, wherein the slewing mechanism comprises a slewing bearing and a speed reducer, the slewing bearing is connected to the bottom of the hydraulic shearing equipment (201) through an inner ring of the slewing bearing, the speed reducer is fixed on the adjacent side of the hydraulic shearing equipment (201), and the shaft end of an output shaft of the speed reducer is provided with a gear and meshed with an outer ring gear on an outer ring of the slewing bearing.
7. The mud-cleaning pile-cutting device for the waste pile foundation according to claim 1, wherein an upper supporting plate (202) is horizontally fixed on the top side of the hydraulic cutting device (201), the hydraulic cutting device (201) is connected with the cylindrical inner sleeve (102) through the upper supporting plate (202), a lower supporting plate (204) is horizontally fixed on the bottom side of the hydraulic cutting device (201), the hydraulic cutting device (201) is connected with the inner ring of the slewing bearing through the lower supporting plate (204), the upper supporting plate (202) and the lower supporting plate (204) are annular plate bodies with central hole diameters and shapes which are matched with the outer diameter and the shape of the pile foundation, and a plurality of second overflow holes (207) are formed in the annular plate surface of the upper supporting plate (202) along the circumferential direction.
8. The mud-cleaning pile-cutting equipment for waste pile foundations according to claim 1, wherein a conical guide cylinder (307) is sleeved on the inner side of the support cylinder (301), is coaxially arranged with the support cylinder (301) in a mode of having an annular gap, and is fixedly connected with the support cylinder through a plurality of connecting rib plates arranged along the circumferential direction, the inner diameter of the conical guide cylinder (307) is gradually reduced from bottom to top, and the shape and the size of the radial section are matched with the pile foundations to be cut.
9. The mud-cleaning pile-cutting equipment for waste pile foundations according to claim 1, wherein the dredging reamer assembly (3) is further provided with a high-pressure water impact system which comprises a plurality of spray pipes which are arranged on the inner side of the supporting cylinder (301) and uniformly distributed along the circumferential direction, a plurality of high-pressure nozzles are arranged on each spray pipe at intervals, and the high-pressure nozzles are obliquely downwards arranged.
10. A method for dredging pile construction by using the dredging pile-cutting equipment for waste pile foundations as claimed in any one of claims 1 to 9, characterized by comprising the steps of: s1, transporting a sludge cleaning pile cutting device to enter a field station, and vertically or obliquely lifting the sludge cleaning pile cutting device by a lifting device to enable the sludge cleaning pile cutting device to be sleeved on the top side of a self-cutting foundation pile; s2, the mud-cleaning pile-cutting equipment slides downwards along the foundation pile under the action of gravity until the mud-cleaning pile-cutting equipment falls onto the soil surface, a high-pressure water impact system and a speed reducer are started, a pit is dug on the soil surface around the pile in a mode of impacting the soil surface by using high-pressure water and rotating the mud-cleaning reamer, the pit size is ensured to be larger than the equipment size, and the mud-cleaning pile-cutting equipment continues to descend below the soil surface until the hydraulic shearing equipment reaches a designated pile-cutting position; s3, starting two hydraulic shear cylinders to enable the movable push rod to extend outwards and drive the cutter body to cut off the foundation pile along the elevation position; s4, lifting the mud-cleaning pile-cutting equipment by using lifting equipment, and simultaneously, utilizing high-pressure water to impact the soil surface and controlling the spiral reamer to reversely rotate to provide lifting force so as to lift the soil surface and convey the soil surface to a designated position; S5, starting the two hydraulic shear cylinders to enable the movable push rod to retract inwards to an initial state, and taking out the truncated pile foundation.

Description

Mud-cleaning pile-cutting equipment for waste pile foundation and construction method thereof Technical Field The invention relates to the technical field of reconstruction and expansion construction operation, in particular to mud-cleaning pile-cutting equipment for waste pile foundations and a construction method thereof. Background Under the background that the port development is converted from a rough expansion mode to an connotation upgrading path, reconstruction, expansion and upgrading transformation of an old wharf are highly matched with the processing requirements of land waste structures in urban updating, so that the method is an important way for constructing resource-saving and environment-friendly ports and urban spaces. At present, the transformation engineering in the two scenes generally needs to process the original pile foundation, and the general flow generally comprises the steps of removing the original upper structure and the pile foundation, excavating the field (or mud surface) to a new design elevation, cutting off the waste pile foundation, and constructing a new pile foundation according to new bearing and function requirements to complete reconstruction, expansion or upgrading transformation. The existing pile cutting process faces remarkable challenges in coping with the two scenes, namely efficient, accurate and low-interference cleaning and cutting of waste pile foundations in a dense and complex medium environment. In a harbor underwater environment, the existing technology generally uses a grab dredger to clean soil near a pile foundation, and then uses a hydraulic pile cutter to cut off old piles. However, the old wharf pile foundations are usually densely arranged, the grab bucket is large in size, soil among piles is difficult to clean thoroughly, so that pile cutting cannot be performed once, and secondary pile cutting is often required even for many times. In addition, if the geological conditions around the pile are hard silt or silt, whether under water or on land, a vibrating hammer is also needed to be assisted to reach the designated depth. In the land city updating scene, although the operation under water is difficult, the problems of dense pile foundations, complex surrounding backfill soil bodies, limited construction space, strict environmental protection requirements and the like are also faced, and the traditional land pile cutting method is difficult to operate in dense pile groups. If the waste pile foundation cannot be cut to the designed elevation, a great deal of interference between the new pile foundation and the old pile foundation is directly caused, and the follow-up construction progress of the new pile foundation and the smooth promotion of the whole engineering are seriously affected. Disclosure of Invention The invention aims to provide mud-cleaning pile-cutting equipment for waste pile foundations, which solves the technical problems. The invention also aims to provide a mud-cleaning pile-cutting construction method realized by adopting the mud-cleaning pile-cutting equipment for the waste pile foundation. For this purpose, the technical scheme of the invention is as follows: A mud-cleaning pile-cutting device for a waste pile foundation comprises a sleeve component, a hydraulic pile-cutting shearing mechanism and a dredging reamer component, wherein the sleeve component comprises a cylindrical inner sleeve, the hydraulic pile-cutting shearing mechanism comprises a hydraulic shearing device, the top side of the hydraulic pile-cutting shearing device is connected with the bottom end of the cylindrical inner sleeve, the bottom side of the hydraulic pile-cutting shearing mechanism is connected with a supporting cylinder of the dredging reamer component through a rotary mechanism, the supporting cylinder is provided with a hollow side wall, a spiral reamer is distributed on the outer wall of the supporting cylinder from top to bottom, a plurality of third overflow holes are formed in the cutter surface at intervals from one end to the other end of the supporting cylinder, a plurality of first cutting blades are arranged in the end surface of the lower side of the spiral reamer at intervals, a tooth cutter is arranged on the outer wall of the bottom side of the supporting cylinder, which is perpendicular to the outer wall of the supporting cylinder, and a plurality of second cutting blades are arranged on the cutter handle at intervals in the horizontal direction, and the first cutting blades and the second cutting blades are arranged in an staggered mode on the circumferential surface, and mud-cleaning paths of the first cutting blades and the second cutting blades can cover a complete annular surface. The sleeve assembly further comprises a conical outer sleeve which is sleeved on the outer side of the cylindrical inner sleeve in a mode of having an annular gap and is fixedly connected with the cylindrical inner sleeve through a plurality of c