CN110952554B - Walking lifting disc type pile head cutting mechanism - Google Patents

Walking lifting disc type pile head cutting mechanism Download PDF

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Publication number
CN110952554B
CN110952554B CN201911321583.7A CN201911321583A CN110952554B CN 110952554 B CN110952554 B CN 110952554B CN 201911321583 A CN201911321583 A CN 201911321583A CN 110952554 B CN110952554 B CN 110952554B
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fixed
cutting
pile
pile head
sliding
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CN110952554A (en
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王国垒
张博
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Zhengzhou Hongtuo Electronic Technology Co ltd
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Zhengzhou Hongtuo Electronic Technology Co ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same

Abstract

The invention discloses a walking lifting disc type pile head cutting mechanism which comprises a walking frame, a lifting mechanism, a rotary driving mechanism, a cutting mechanism, a positioning mechanism and a traction lifting mechanism. And guide structures are arranged between the two ends of the sliding middle beam of the lifting mechanism and the vertical columns on the two sides respectively, so that the sliding middle beam can move up and down along the vertical columns on the two sides. The rotary driving mechanism comprises three adjusting pressing wheel mechanisms which are equally distributed at the same horizontal height of the rotary frame along 120 degrees. When the pile is used, the construction efficiency is high, the cutting section is smooth, the reinforcing steel bar cannot be damaged, the bending deformation of the reinforcing steel bar cannot be caused, the tensile strength of the reinforcing steel bar is not influenced, the pile top is leveled in height after the pile head is broken, and the operation is simple and convenient, and the labor is saved.

Description

Walking lifting disc type pile head cutting mechanism
Technical Field
The invention belongs to the technical field of building construction cutting tools, and particularly relates to a disc type pile head cutting mechanism with walking and lifting functions, which is applied to cutting off a pile head of a cast-in-place pile.
Background
In order to ensure the quality of a pile head during pile foundation construction, the elevation of the pile top generally needs to be higher than the designed elevation, the cast-in-place pile can form a certain thickness on the surface of concrete due to sediment at the bottom of the pile and impurities precipitated in slurry in the casting process when the concrete is cast, the cast-in-place pile is generally called as laitance, the pile head of the cast-in-place pile is mixed with impurities such as silt, the strength cannot meet the use requirement, then after the concrete is solidified, a super-cast part needs to be chiseled off, main ribs (steel bars) above the elevation of the pile top are exposed, and after the pile foundation is detected to be qualified, the construction of a bearing. The height of the building pile foundation is required to be over-poured according to experience, the height is generally 0.5 m specified in the technical specification of the building pile foundation, and the height range can be adjusted according to experience.
The pile head breaking construction usually adopts the methods of manual breaking, digging machine breaking hammer breaking or pile head pulling by adopting hydraulic pile head cutting machinery to match with a reinforcing cage installation sleeve. Manually breaking the pile head: broken stake or broken pile head really also very tells the skill, and some team's construction usefulness is full section chisel removed, with pneumatic pick (air compressor machine), some are squeezed into with the drill rod in pile bolck position, and the protective layer concrete chisel outside the reinforcing bar is earlier removed, exposes the reinforcing bar, then generally squeezes into 3 points along the circumference with the inside concrete of steel reinforcement cage, utilizes tension to make one section pile head on upper portion and lower part break away from (because the concrete resistance to compression is very good, but the tensile is very weak). And then the product can be cleared out by a crane or an excavator. The speed of manually breaking the pile head is very low, the pile body quality and the pile body steel bar damage are large, when the air pick is used for chiseling, the steel bar is easy to damage, and the steel bar is bent and deformed, so that the tensile strength is reduced, and the connection between the pile body and the bearing platform is weakened; after the pile head is broken, the pile top is uneven. Mechanically breaking the pile head: since 2012 'france international engineering machinery exhibitions', the pile cutter is introduced to the country to start research, production and test. The development process of the pile cutting machine in China is not plain, the domestic construction is not standard, and serious irregular pile diameter and the like are important obstacles which hinder the popularization of the pile cutting machine. In 2014, the use of a breaking hammer is forbidden in the pile head breaking process of the Party A, and the subsequent force insufficiency of a mechanical worker and the like are all necessary conditions for promoting the popularization of the pile breaking machine. The pile cutter adopts a modular design, each module is provided with an independent oil cylinder and a drill rod, and the oil cylinder drives the drill rod to realize linear motion. The multiple modules are combined together to adapt to construction of different pile diameters, are connected in parallel through hydraulic pipelines to realize synchronous action, and extrude the pile body at multiple points of the same section at the same time to realize the breakage of the pile body at the section. However, the breaking hammer of the existing pile cutting machine often causes bending of the reinforcing steel bars, and in the breaking process, the normal pile body part below the pile head may be damaged; the pile head is pulled out by adopting hydraulic pile head cutting machinery to match with the steel reinforcement cage installation sleeve, so that the deformation of part of the steel reinforcement of the pile head can be well guaranteed, the construction process is more complicated, and the construction cost is higher. The existing pile cutting machine is also generally hoisted and transferred between different cast-in-place piles by adopting an excavator, and when the cast-in-place piles are high in density and wide in range, the excavator cannot go deep into construction, so that the use is inconvenient. In some prior art that adopts the saw cutting, although can guarantee that the cutting section is smooth, do not influence the pile body quality, the job site dust flies upward, and the circular motion need be made around the bored concrete pile to the manual saw cutting, and is inefficient, and the environment is poor, only is fit for low-order cutting.
The Chinese patent publication No. CN 108374416A is a high-pressure water jet pile head breaking device, which comprises a fixing device, a power system and a cutting component for breaking the pile head, wherein the power system can drive the cutting component to do circular motion around the cast-in-place pile and do up-and-down motion along the axial direction of the cast-in-place pile, the cutting component can do circular motion around the cast-in-place pile under the drive of the power system, but in fact, the device does not provide a mechanism which just moves up and down along the axial direction, so that the mechanism needs to be manually carried or hoisted and then sleeved at the upper end of the cast-in-place pile when in use, the transfer work difficulty is large, the efficiency is low when a large number of cast-in-place piles are operated, and the height of the cast-in-place piles is different due to different ground levelness in a plurality of construction sites, so that the height of the cutting ends is different, the technology does not solve the technical content record or prompt of the adaptability adjustment aiming at the cast-in-place piles with different heights. In fact, when this technique was used high pressure water cutting, not only need be equipped with high pressure water system on the job site, set up high pressure water cutting tool bit in semi-closed tube-shape casing, the weak zone time of high pressure water cutting bored concrete pile can lead to piercing through the problem, and the high pressure water of the concrete material bored concrete pile can lead to the fact the cutting to tube-shape casing inner wall, influences equipment normal use.
Disclosure of Invention
Aiming at the defects and problems of a pile cutting head machine adopted in the existing pile head breaking construction, the invention provides the disc type pile head cutting mechanism which is simple to operate, can flexibly move and walk, and can be adjusted in a lifting mode to meet the requirements of different foundations and pile heights.
The technical scheme adopted by the invention for solving the technical problems is as follows: a walking lifting disc type pile head cutting mechanism comprises a walking frame, a lifting mechanism, a rotary driving mechanism, a cutting mechanism, a positioning mechanism and a traction lifting mechanism.
The walking frame comprises vertical upright posts, an upper straight beam, lower curved beams, backward inclined supporting legs and front supporting parts, wherein the upper straight beam is transversely fixed at the upper ends of the vertical upright posts on two sides, the lower curved beams are fixed at the lower ends of the vertical upright posts on two sides, the lower ends of the vertical upright posts on two sides are connected with the backward inclined supporting legs inclined towards the rear side, the lower ends of the backward inclined supporting legs are respectively provided with walking wheels, the lower curved beams are arc-shaped curved beams, the centers of the downward curved beams are vertically and radially fixed with connecting rods, and the front supporting parts are.
The lifting mechanism comprises a sliding middle beam, and guide structures are arranged between two ends of the sliding middle beam and the vertical columns on the two sides respectively to enable the sliding middle beam to move up and down along the vertical columns on the two sides.
The rotary driving mechanism comprises a power source, an output rotating shaft of the power source is respectively installed at the middle part of the sliding middle beam through a thrust bearing and a roller bearing, a rotating frame is fixed below the output rotating shaft and is of a cylindrical barrel or cylindrical frame structure, the cutting mechanism is located on the upper part of the rotating frame, and the positioning mechanism is located on the lower part of the rotating frame.
The cutting mechanism comprises a transverse sliding rod which is transversely fixed on the inner side of the rotating frame, a transverse sliding sleeve is sleeved on one side of the transverse sliding rod, the lower end of the transverse sliding sleeve is fixedly connected with a motor base, a cutting motor is fixed in the motor base, a horizontal saw blade is installed on a rotating shaft at the lower end of the cutting motor, an external thread sleeve is sleeved on the outer end of the transverse sliding sleeve, a side hole is formed in the side face of the rotating frame, an extending part of the external thread sleeve penetrates through the side hole, an adjusting screw is sleeved on the extending part, a motor displacement adjusting hand wheel is fixed on the adjusting screw, a motor thrust spring is sleeved on the outer side of the external thread sleeve, and the motor thrust spring is supported between the transverse sliding sleeve and the; and a conducting ring is also arranged between the root part of the output rotating shaft and the sliding middle beam, a fixed part of conducting wires of the conducting ring are connected with a power supply, and a rotating part of conducting wires of the conducting ring are connected with a power line of the cutting motor.
Positioning mechanism include that three distributes in the same level of swivel mount regulation pinch roller mechanism along 120 degrees equidistance, every regulation pinch roller mechanism includes adjusting screw, the location screw, wheel seat and location pulley, the equipartition has three side opening on the same periphery of the bottom of swivel mount, the cover is equipped with adjusting screw respectively in each side opening, the inner of each adjusting screw is fixed with the wheel seat respectively, install level respectively in each wheel seat and put the location pulley, the location screw is installed to the part that each adjusting screw is located outside the side opening, adjusting screw outside cover between wheel seat and swivel mount inner wall is equipped with positioning spring.
The front supporting part is a vertical supporting leg vertically fixed at the tail end of the connecting rod. The supporting legs of two hypsokinesis supporting legs and a front side all adopt the sleeve pipe suit relation, and the side is provided with the lock silk. Or, the front supporting part is a transverse shaft sleeve vertically fixed at the tail end of the connecting rod, a rotating shaft is sleeved in the shaft sleeve, a steering wheel is installed at the upper end of the rotating shaft, and a steering wheel is installed at the lower end of the rotating shaft through a wheel carrier. The two backward inclined supporting legs are sleeved by a sleeve, and the side surfaces of the two backward inclined supporting legs are provided with locking wires; the upper part of the rotating shaft is provided with a height adjusting nut which is supported at the top of the shaft sleeve, and the height of the rotating shaft in the shaft sleeve can be changed by adjusting the height adjusting nut. And a level meter is arranged on the walking frame and used for judging the balance degree of the walking frame.
The adopted traction lifting mechanism comprises a pulley block, a traction rope and a driving hand wheel, wherein the pulley block comprises a middle wheel seat and a middle pulley which are fixed at the middle part of an upper straight beam, a side wheel seat and a side pulley which are fixed at the upper end of one side of a vertical upright post, and a hand wheel seat which is fixed at the lower end of one side of the vertical upright post, the driving hand wheel is installed in the hand wheel seat, the lower end of the traction rope I is fixed at the middle position of the sliding middle beam through a lower traction end, the upper end of the traction rope I is fixed at the axle center position of a movable pulley, one end of the traction rope II is fixed at the middle position of the. And a locking mechanism is arranged between the hand wheel seat and the driving hand wheel.
Or the traction lifting mechanism comprises a pulley block, a traction rope and an electric drive part, the pulley block comprises a middle wheel seat and a middle pulley which are fixed in the middle of the upper straight beam, and an electric hoist which is fixed on one side of the upper straight beam or the vertical upright post, the lower end of the traction rope I is fixed in the middle of the sliding middle beam through a lower traction end, and the tail end of the traction rope I is connected with the traction end of the electric hoist after the upper end of the traction rope I is wound on the middle pulley.
Wherein, the both ends of slip centre sill are fixed with the card rail, and the card rail in both sides is the suit respectively in the vertical stand outside in both sides.
The middle part of the upper side of the sliding middle beam is fixed with an auxiliary support, the middle part of the auxiliary support is provided with a driving chamber, the power source comprises a motor and a gearbox, and the power source is positioned in the driving chamber.
The invention has the beneficial effects that: the invention provides a disc type pile head cutting mechanism which is simple to operate, can flexibly move and walk, and can be adjusted in a lifting mode to meet the requirements of different foundations and pile heights.
When the adjusting and pressing wheel mechanism is used, one of the adjusting and pressing wheel mechanisms needs to be adjusted, a gap is reserved for the positioning pulley to move outwards for being sleeved on the outer side of a cast-in-place pile, after the cast-in-place pile is sleeved, the positioning screw is adjusted again to push the adjusting screw to move inwards along the radial direction by the originally pulled-out equal distance, and the corresponding positioning pulley is supported on the side face of the cast-in-place pile.
The height and the radial distance of the cutting mechanism can be adjusted, the radial distance of the cutting mechanism needs to be adjusted before the rotating frame is sleeved on the outer side of the cast-in-place pile, the cutting mechanism is enabled to be close to the edge position of the inner side of the rotating frame as far as possible, and the cutting mechanism is kept in a state of being pressed by a motor thrust spring after the rotating frame is sleeved on the cast-in-place pile. The cutting mechanism is adjusted by screwing an adjusting screw to pull the external thread sleeve to move outwards along the radial direction, and after the external thread sleeve moves outwards, the cutting mechanism can slide outwards along the transverse sliding rod, namely the saw blade can slide outwards as much as possible, and at the moment, the motor thrust spring is compressed. After the rotating frame is sleeved on the outer side of the cast-in-place pile, the adjusting screw nut is reversely screwed, the adjusting screw nut is excessively adjusted outwards to exceed the range of the elastic force stroke of the motor thrust spring, and the motor thrust spring is pressed against the end of the transverse sliding sleeve to provide radially inward pressure for the cutting mechanism. When the cutting mechanism works, the saw blade can rotate around the circumference of the cast-in-place pile while rotating.
The traction lifting mechanism adopted by the invention is a mechanism for simultaneously lifting the sliding centre sill, the rotating frame, the cutting mechanism and the like, so that the rotating frame is sleeved on the upper side of the cast-in-place pile in a lifting state, and the rotating frame is sleeved on the outer side of the cast-in-place pile below the rotating frame. The saw blade of the cutting mechanism can be controlled and ensured to correspond to the cutting line position of the cast-in-place pile through the traction lifting mechanism and the corresponding observation window.
The invention adopts the cylindrical barrel, but the circumferential side surface of the cylindrical barrel is provided with the observation hole so as to be convenient for observing corresponding parts inside, and the observation hole can be a transparent window or a door structure so as to prevent dust from leaking. After the dust of saw cutting process is blockked by the cylinder barrel, most follow its bottom and discharge the whereabouts downwards, improve the current situation that saw cutting construction site dust flies upward.
The positioning pulleys are used, the cylindrical surface wheels are adopted, the cylindrical surfaces of the positioning pulleys can be ensured to be in surface contact with the circumferential surface of the cast-in-place pile, and even if the flatness of the foundation at the position where the cast-in-place pile is located is poor, the axis of the cast-in-place pile can be approximately coincided with the axis of the rotating frame through the extrusion relationship of the positioning pulleys.
The pile head cutting device has the advantages that the construction efficiency is high when the pile head cutting device is used, the cutting section is flat, the reinforcing steel bar cannot be damaged, the bending deformation of the reinforcing steel bar cannot be caused, the tensile strength of the reinforcing steel bar is not influenced, the pile top is flush in height after the pile head is broken, the operation is simple and convenient, and the labor is saved.
Drawings
Fig. 1 is a schematic structural view of the pile head cutting mechanism of the present invention.
Fig. 2 is a schematic view of the cross-sectional structure a-a in fig. 1.
Fig. 3 is a schematic view of an adjustment structure of the cutting mechanism of fig. 1.
Fig. 4 is a schematic view of the direction adjustment mechanism of fig. 1.
Fig. 5 is a second schematic structural view of the pile head cutting mechanism of the present invention.
Reference numbers in the figures: the walking frame 1, the lifting mechanism 2, the rotary driving mechanism 3, the cutting mechanism 4, the positioning mechanism 5, the traction lifting mechanism 6, the electric hoist 7, the cast-in-place pile 8, the vertical upright post 11, the upper straight beam 12, the lower curved beam 13, the backward inclined supporting leg 14, the walking wheel 141, the steering wheel 15, the connecting rod 16, the shaft sleeve 17, the wheel rotating shaft 18, the wheel carrier 19, the steering wheel 191, the sliding middle beam 21, the clamping rail 22, the auxiliary bracket 23, the driving chamber 24, the motor 31, the gearbox 32, the rotating shaft 33, the thrust bearing 34, the roller bearing 35, the conducting ring 36, the rotating frame 37, the side hole 38, the fixed seat 39, the transverse sliding sleeve 41, the external thread sleeve 42, the adjusting screw 43, the motor displacement adjusting hand wheel 44, the motor thrust spring 45, the motor seat 46, the cutting motor 47, the saw blade 48, the transverse sliding rod 49, the adjusting screw 51, the positioning screw 52, the wheel seat 53, the positioning pulley 54, the, the traction device comprises an upper traction end 612, a middle wheel seat 62, a side wheel seat 63, a hand wheel seat 64, a middle pulley 65, a side pulley 66, a driving hand wheel 67, a first traction rope 681, a second traction rope 682 and a movable pulley 69.
Detailed Description
When pouring the cast-in-place pile, the elevation of the top of the cast-in-place pile should be 0.5-1.0 m higher than the elevation of the designed top of the pile so as to ensure the concrete strength of the pile head, but the part of the pile head higher than the designed elevation of the top of the pile must be chiseled off in the subsequent process construction, namely the pile head is broken. The existing pile breaking machine has the problems of different degrees, mainly manifested in that the moving performance is not flexible enough, the pile foundations in a plurality of construction sites have high density and are not suitable for deep penetration of a forklift, the forklift is located at the edge of the area close to the pile base, and the pile breaking head can be conveniently operated only for the near pile foundations, so that the pile breaking head can be whipped remotely. When the forklift is not used, the pile breaking head is large and heavy, the manual transportation and the operation are troublesome, the use is inconvenient, the working efficiency is low, and the construction quality is poor. Aiming at the problem, the invention adopts the following embodiment to effectively solve the problem and provide a simpler and more convenient pile head breaking construction tool. The invention is further illustrated with reference to the following figures and examples.
Example 1: as shown in fig. 1, the pile head cutting mechanism mainly comprises a walking frame 1, a lifting mechanism 2, a rotary driving mechanism 3, a cutting mechanism 4, a positioning mechanism 5, a traction lifting mechanism 6 and the like.
Specifically, a tripod is arranged at the bottom of the walking frame 1, walking wheels are arranged on two supporting legs of the tripod, the walking wheels are not arranged on the other supporting leg, but a stand column is arranged on the other supporting leg, when the walking frame needs to walk, one side of the stand column is lifted to push forwards or pull the walking frame 1 backwards, one side of the stand column is put down to support after the walking frame is moved in place, and two walking wheels support most of gravity and are convenient for controlling the walking direction. The upper part of the walking frame 1 is provided with at least two vertical upright posts 11, an upper straight beam 12, a lower curved beam 13, a backward inclined supporting leg 14, a 141 walking wheel and the like. The upper straight beam 12 is transversely fixed at the upper ends of the vertical columns 11 at two sides, the lower curved beam 13 is fixed at the lower ends of the vertical columns 11 at two sides, the lower curved beam 13 is a circular arc-shaped curved beam, the center of the circular arc-shaped curved beam is vertically fixed with a connecting rod 16 along the radial direction, the tail end of the connecting rod 16 is fixedly provided with a front supporting part, and the front supporting part at the position is a vertical supporting leg vertically fixed at the tail end of the connecting rod 16.
The lifting mechanism 2 moves on the basis of the two vertical columns 11 of the walking frame 1, and specifically, as shown in fig. 1, the lifting mechanism 2 comprises a sliding center sill 21, the two ends of the sliding center sill are respectively provided with a clamping rail 22, and the clamping rails 22 on the two sides are respectively sleeved on the outer sides of the vertical columns 11 on the two sides, so that the sliding center sill 21 can only lift along the vertical columns 11 on the two sides. In addition, an auxiliary bracket 23 is fixed at the middle part of the upper side of the sliding middle beam 21, and a driving chamber 24 is arranged at the middle part of the auxiliary bracket 23 and used for installing a power source of the rotary driving mechanism 3.
The rotary drive mechanism 3 includes a power source including a motor 31 and a gear box 32, and the power source is located in the drive chamber 24. The output pivot 33 of power supply is installed through thrust bearing 34 and roller bearing 35 respectively the middle part of roof beam 21 in sliding, is fixed with swivel mount 37 through fixing base 39 in the below of output pivot 33 simultaneously, and this swivel mount 37 is cylinder barrel or cylindrical frame structure, and this embodiment adopts the cylinder barrel, but the circumference side of this cylinder barrel should leave the observation hole to in order to observe inside corresponding part, the observation hole can be transparent window or door structure, is used for preventing that the dust from leaking. After the dust of saw cutting process is blockked by the cylinder barrel, most follow its bottom and discharge the whereabouts downwards, improve the current situation that saw cutting construction site dust flies upward.
As shown in fig. 1, the positioning mechanism 5 is located at a lower portion of the rotating frame 37. The positioning mechanism 5 comprises three adjusting pressing wheel mechanisms with elastic pressing functions, as shown in fig. 2, the three uniformly distributed adjusting pressing wheel mechanisms are equally distributed on the same plane height of the rotating frame 37 along 120 degrees, and each adjusting pressing wheel mechanism comprises an adjusting screw 51, a positioning screw 52, a wheel seat 53 and a positioning pulley 54. Three side holes 38 are uniformly distributed on the same circumferential surface of the bottom of the rotating frame 37, an adjusting screw 51 is sleeved in each side hole, a wheel seat 53 is fixed at the inner end of each adjusting screw 51, a horizontal positioning pulley 54 is arranged in each wheel seat 53, a positioning screw nut 52 is arranged at the part of each adjusting screw 51 positioned outside the side hole 38, and a positioning spring 55 is sleeved outside the adjusting screw 51 between the wheel seat 53 and the inner wall of the rotating frame 37. As shown in fig. 2, the inner ends of the positioning pulleys 54 are supported on the surface of the cast-in-place pile 8, and the positioning pulleys 54 are uniformly distributed at 120 degrees adjacent to each other and are acted by the positioning springs 55, so that the pressure of the positioning pulleys 54 on the cast-in-place pile 8 is uniform, and the cast-in-place pile 8 can be ensured to be always positioned in the center of the device, so as to ensure that the cutting mechanism 4 can rotate around the circumference of the cast-in-place pile 8 to cut uniformly. When the positioning pulleys 54 are designed and used, cylindrical surface wheels are preferably adopted to ensure that the cylindrical surfaces of the positioning pulleys 54 can have surface contact relation with the circumferential surfaces of the cast-in-place piles 8, and when the positioning pulleys 54 are cylindrical surface wheels, even if the flatness of the foundation where the cast-in-place piles 8 are located is poor, the axial center of the cast-in-place piles 8 can be approximately overlapped with the axial center of the rotating frame 37 through the extrusion relation of the positioning pulleys 54. However, the pile head cutting mechanism used in this embodiment is preferably applied to the base flat area, and the following embodiment 3 is used for the base flat area. In use, one of the adjusting pressing wheel mechanisms is first adjusted as shown in fig. 2, specifically, by rotating the positioning screw 52 to pull the adjusting screw 51 to move radially outward, the adjusting screw 51 moves the positioning pulley 54 corresponding to the guide pin outward. The purpose of moving one of the positioning pulleys 54 outward is to leave a gap for being sleeved on the outer side of the cast-in-place pile 8, otherwise, the positioning pulleys 54 are not easily sleeved on the outer side of the cast-in-place pile 8 due to the elastic inward compression state. After the cast-in-place pile 8 is sleeved, the positioning screw 52 is adjusted again to push the adjusting screw 51 to move radially inward by the originally pulled equal distance, so that the corresponding positioning pulley 54 is supported on the side surface of the cast-in-place pile 8.
As in fig. 1, the cutting mechanism 4 is located at an upper portion of the rotating frame 37. The cutting mechanism 4 comprises a transverse sliding rod 49 transversely fixed on the inner side of the rotating frame 37, a transverse sliding sleeve 41 is sleeved on one side of the transverse sliding rod 49, the lower end of the transverse sliding sleeve 41 is fixedly connected with a motor base 46, a cutting motor 47 is fixed in the motor base 46, and a horizontal saw blade 48 is installed on a rotating shaft at the lower end of the cutting motor 47. As shown in fig. 3, an external thread sleeve 42 is fixedly connected to an outer end of the sliding sleeve 41, the external thread sleeve 42 and the rotating frame 37 are integrated, a side hole 38 is formed in a side surface of the rotating frame 37, the external thread sleeve 42 penetrates through the side hole 38, an extending part is sleeved with an adjusting screw 43, a motor displacement adjusting hand wheel 44 is fixed on the adjusting screw 43, a motor thrust spring 45 is sleeved on an outer side of the external thread sleeve 42, and the motor thrust spring 45 is supported between the sliding sleeve 41 and an inner wall of the rotating frame 37. A conducting ring 36 (only a common conducting slip ring is adopted, the cost is low) is further installed between the root of the rotating shaft 33 and the sliding center sill 21, a fixed part of conducting wires of the conducting ring 36 are connected with a power supply, and a rotating part of conducting wires of the conducting ring 36 are connected with a power supply wire of a cutting motor 47. Before the rotating frame 37 is sleeved on the outer side of the cast-in-place pile 8, the cutting mechanism needs to be adjusted to be as close to the edge of the inner side of the rotating frame 37 as possible, and after the rotating frame 37 is sleeved on the cast-in-place pile 8, the cutting mechanism 4 is kept in a state of being pressed by the motor thrust spring 45. The cutting mechanism 4 is adjusted by screwing the adjusting screw 43 to pull the external threaded sleeve 42 to move radially outward, and after the external threaded sleeve 42 moves outward, the cutting mechanism 4 can slide outward along the cross slide rod 49, that is, the saw blade 48 can slide outward as much as possible, and at this time, the motor thrust spring 45 is compressed. After the rotating frame 37 is sleeved outside the cast-in-place pile 8, the adjusting screw 43 is screwed reversely, and the adjusting screw 43 exceeds the elastic travel range of the motor thrust spring 45 due to excessive outward adjustment, as shown in fig. 3, and the motor thrust spring 45 is pressed against the end of the transverse sliding sleeve 41 to provide a radially inward pressure to the cutting mechanism 4. Due to the limited cutting depth of the cast-in-place pile 8 (the cast-in-place pile 8 is in a hollow tubular shape, and the thickness of the tubular wall of the cast-in-place pile 8 is limited), the elastic force stroke range of the motor thrust spring 45 is limited, and the outward adjustment distance of the adjusting nut 43 is limited.
The traction lifting mechanism 6 is a mechanism for lifting the sliding center sill 21, the rotating frame 37 and the cutting mechanism 4 at the same time, so that the rotating frame 37 is sleeved on the upper side of the cast-in-place pile 8 in a lifting state, and the rotating frame 37 is sleeved on the outer side of the cast-in-place pile 8 below the rotating frame. The position of the saw blade 48 of the cutting mechanism 4 corresponding to the cutting line of the cast-in-place pile 8 can be controlled and ensured by means of the traction lifting mechanism 6 and the corresponding viewing window. Then, the cutting mechanism 4 is started to carry out pile breaking operation, and after the pile head is broken, the pile top has no residual loose concrete; after the pile position center is measured, two crossed ink lines are popped at the broken pile top, the pile center and the pile number are obviously identified, and the picture is kept for storage.
The traction and lifting mechanism 6 can adopt manual driving traction or electric driving traction. In this embodiment, when the manual traction mode shown in fig. 1 is adopted, the adopted traction lifting mechanism 6 includes a pulley block, a traction rope 68 and a driving hand wheel 67, the pulley block includes a middle wheel seat 62 and a middle pulley 65 fixed in the middle of the upper straight beam 12, a side wheel seat 63 and a side pulley 66 fixed in the upper end of one side of the vertical upright post 11, a hand wheel seat 64 fixed in the lower end of one side of the vertical upright post 11, a driving hand wheel 67 is installed in the hand wheel seat 64, the lower end of a traction rope one 681 is fixed in the middle of the sliding middle beam 21 through a lower traction end 611, the upper end is fixed in the axial position of a movable pulley 69, one end of a traction rope two 682 is fixed in the middle of the upper straight beam 12 through an upper traction end 612, and then is sequentially wound around. A locking mechanism may be disposed between the hand wheel seat 64 and the driving hand wheel 67, for example, the hand wheel seat 64 and the driving hand wheel 67 are locked together by a lock wire.
Example 2: on the basis of embodiment 1, when the embodiment adopts the electric drive traction manner as shown in fig. 5, the traction lifting mechanism 6 adopted therein comprises a pulley block, a traction rope 68 and an electric drive part, the pulley block comprises a middle wheel seat 62 and a middle pulley 65 fixed in the middle of an upper straight beam 12, and an electric hoist 7 fixed on one side of the upper straight beam 12 or a vertical upright post 11, the lower end of the traction rope 681 is fixed in the middle of the sliding middle beam 21 through a lower traction end 611, and the upper end is wound around the middle pulley 65 and the tail end thereof is connected with the traction end of the electric hoist 7.
Example 3: on the basis of embodiment 1, only the supporting relationship of two traveling wheels and one upright is adopted for the traveling frame relative to embodiment 1. In the embodiment, a shaft sleeve 17 is vertically fixed at the tail end of a connecting rod 16 vertically fixed at the center of the lower curved beam 13 along the radial direction, a rotating shaft 18 is sleeved in the shaft sleeve 17, the upper end of the rotating shaft 18 is provided with a steering wheel 15, and the lower end is provided with a steering wheel 191 through a wheel carrier 19.
Example 4: on the basis of the embodiment 1, the two backward inclined supporting legs 14 and the front supporting leg are in sleeving relation, and the locking wires are arranged on the side faces, so that the legs can be finely adjusted in height to adapt to the use of uneven foundation areas. And a level gauge can be arranged on the walking frame 1 for judging the balance degree of the walking frame, so that the cutting work is prevented from being influenced by the transition deflection problem.
Example 5: in addition to embodiment 1, the two rearwardly inclined legs 14 are in a sleeved relationship and have locking wires on their sides to allow fine height adjustment of the legs. Meanwhile, the upper part of the rotating shaft 18 is provided with a height adjusting nut which is supported at the top of the shaft sleeve 17, and the height of the rotating shaft 18 in the shaft sleeve 17 can be changed by adjusting the height adjusting nut. Therefore, the device can be suitable for the use of a non-flat foundation area, and can also be used for judging the balance degree of the walking frame by installing a level gauge on the walking frame 1, so that the cutting work is prevented from being influenced by the transition deflection problem.

Claims (10)

1. A traveling lifting disc type pile head cutting mechanism is characterized by comprising a traveling frame (1), a lifting mechanism (2), a rotary driving mechanism (3), a cutting mechanism (4), a positioning mechanism (5) and a traction lifting mechanism (6), the walking frame (1) comprises vertical upright posts (11), an upper straight beam (12), a lower curved beam (13), backward-inclined supporting legs (14) and a front supporting part, wherein the upper straight beam (12) is transversely fixed at the upper ends of the vertical upright posts (11) at two sides, the lower curved beam (13) is fixed at the lower ends of the vertical upright posts (11) at two sides, the lower ends of the vertical upright posts (11) at two sides are connected with the backward-inclined supporting legs (14) inclined towards the rear side, the lower ends of the backward-inclined supporting legs (14) are respectively provided with (141) walking wheels, and the lower curved beam (13) is a circular arc curved beam, a connecting rod (16) is vertically fixed at the center of the front support along the radial direction, and the tail end of the connecting rod (16) is fixedly provided with a front support part; the lifting mechanism (2) comprises a sliding middle beam (21), and guide structures are arranged between two ends of the sliding middle beam (21) and the vertical upright columns (11) on two sides respectively to enable the sliding middle beam (21) to move up and down along the vertical upright columns (11) on two sides; the rotary driving mechanism (3) comprises a power source, an output rotating shaft (33) of the power source is respectively installed in the middle of the sliding middle beam (21) through a thrust bearing (34) and a roller bearing (35), a rotary frame (37) is fixed below the output rotating shaft (33), the rotary frame (37) is of a cylindrical barrel or cylindrical frame structure, the cutting mechanism (4) is located on the upper portion of the rotary frame (37), and the positioning mechanism (5) is located on the lower portion of the rotary frame (37); the cutting mechanism (4) comprises a transverse sliding rod (49) transversely fixed on the inner side of the rotating frame (37), a transverse sliding sleeve (41) is sleeved on one side of the transverse sliding rod (49), the lower end of the transverse sliding sleeve (41) is fixedly connected with a motor base (46), a cutting motor (47) is fixed in the motor base (46), a horizontal saw blade (48) is installed on a rotating shaft at the lower end of the cutting motor (47), meanwhile, an external thread sleeve (42) is sleeved at the outer end of the transverse sliding sleeve (41), and a side hole (38) is arranged on the side surface of the rotating frame (37), an external thread sleeve (42) penetrates through the side hole (38), the extended part is sleeved with an adjusting screw (43), a motor displacement adjusting hand wheel (44) is fixed on the adjusting screw (43), a motor thrust spring (45) is sleeved outside the external thread sleeve (42), the motor thrust spring (45) is supported between the transverse sliding sleeve (41) and the inner wall of the rotating frame (37); a conducting ring (36) is further installed between the root of the output rotating shaft (33) and the sliding center sill (21), a fixed part of conducting wires of the conducting ring (36) are connected with a power supply, and a rotating part of conducting wires of the conducting ring (36) are connected with a power line of a cutting motor (47); positioning mechanism (5) include that three is arranged in the same level of swivel mount (37) regulation pinch roller mechanism along 120 degrees equidistribution, every regulation pinch roller mechanism includes adjusting screw (51), location screw (52), wheel seat (53) and location pulley (54), the equipartition has three side opening (38) on the same periphery in the bottom of swivel mount (37), each side opening is equipped with adjusting screw (51) respectively, the inner of each adjusting screw (51) is fixed with wheel seat (53) respectively, install horizontal location pulley (54) in each wheel seat (53) respectively, location screw (52) are installed to the part that each adjusting screw (51) are located outside side opening (38), adjusting screw (51) outside cover between wheel seat (53) and swivel mount (37) inner wall is equipped with location spring (55).
2. A travelling elevating disc pile head cutting mechanism according to claim 1, characterized in that the front support is a vertical support leg fixed vertically at the end of a connecting rod (16).
3. A travelling elevating disc pile head cutting mechanism according to claim 2, characterized in that the two rear inclined legs (14) and one front side leg are in a sleeved relationship and the side is provided with a lock wire.
4. The travelling elevating disk type pile head cutting mechanism according to claim 1, wherein the front supporting part is a transverse shaft sleeve (17) vertically fixed at the tail end of the connecting rod (16), a wheel rotating shaft (18) is sleeved in the shaft sleeve (17), a steering wheel (15) is installed at the upper end of the wheel rotating shaft (18), and a steering wheel (191) is installed at the lower end of the wheel rotating shaft through a wheel carrier (19).
5. The travelling elevating disc type pile head cutting mechanism according to claim 4, characterized in that the two back inclined legs (14) are in a sleeve sleeving relationship and are provided with locking wires at the side; the upper part of the wheel rotating shaft (18) is provided with a height adjusting nut which is supported at the top of the shaft sleeve (17), and the height of the wheel rotating shaft (18) in the shaft sleeve (17) can be changed by adjusting the height adjusting nut.
6. A travelling elevating disc pile head cutting mechanism according to any one of claims 2-5, characterized in that a level is mounted on the travelling frame (1) for determining the degree of balance of the travelling frame.
7. The travelling lifting disc type pile head cutting mechanism according to claim 1, wherein the traction lifting mechanism (6) comprises a pulley block, a traction rope (68) and a driving hand wheel (67), the pulley block comprises a middle wheel seat (62) and a middle pulley (65) which are fixed in the middle of the upper straight beam (12), a side wheel seat (63) and a side pulley (66) which are fixed on the upper end of one side of the vertical column (11), a hand wheel seat (64) which is fixed on the lower end of one side of the vertical column (11), the driving hand wheel (67) is installed in the hand wheel seat (64), the lower end of the traction rope I (681) is fixed in the middle of the sliding middle beam (21) through a lower traction end (611), the upper end of the traction rope I is fixed in the axial center of a movable pulley (69), one end of the traction rope II (682) is fixed in the middle of the upper straight beam (12) through an upper traction end (612), and, A side pulley (66) and a driving hand wheel (67),
and a locking mechanism is arranged between the hand wheel seat (64) and the driving hand wheel (67).
8. A travelling elevating disc type pile head cutting mechanism according to claim 1, characterized in that the traction lifting mechanism (6) comprises a pulley block and a traction rope (68) and an electric driving part, the pulley block comprises a middle wheel seat (62) and a middle pulley (65) fixed in the middle of the upper straight beam (12), an electric hoist (7) fixed on one side of the upper straight beam (12) or the vertical upright post (11), the lower end of the traction rope (681) is fixed in the middle of the sliding middle beam (21) through a lower traction end (611), and the upper end is wound around the middle pulley (65) and the tail end of the traction rope is connected with the traction end of the electric hoist (7).
9. The travelling lifting disc type pile head cutting mechanism according to claim 1, wherein clamping rails (22) are fixed at two ends of the sliding middle beam (21), and the clamping rails (22) at two sides are respectively sleeved on the outer sides of the vertical columns (11) at two sides.
10. A travelling elevating disc type pile head cutting mechanism according to claim 1, characterized in that an auxiliary support (23) is fixed at the middle part of the upper side of the sliding middle beam (21), a driving chamber (24) is arranged at the middle part of the auxiliary support (23), the power source comprises a motor (31) and a gearbox (32), and the power source is positioned in the driving chamber (24).
CN201911321583.7A 2019-12-20 2019-12-20 Walking lifting disc type pile head cutting mechanism Active CN110952554B (en)

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Publication number Priority date Publication date Assignee Title
CN111962512A (en) * 2020-08-18 2020-11-20 温州源铭振跃科技有限公司 Bridge pile foundation pile head breaking device and method
CN113513022A (en) * 2021-05-06 2021-10-19 湖北远大建设集团有限公司 Bored concrete pile head concrete stripping chiseling device

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WO2004070121A1 (en) * 2003-02-07 2004-08-19 Cementation Foundations Skanska Limited Techniques for pile breaking
JP5587678B2 (en) * 2010-06-18 2014-09-10 三谷セキサン株式会社 Ready-made pile cutting device
CN106836222A (en) * 2017-02-14 2017-06-13 王本勋 A kind of high ferro cushion cap pile crown girdling machine
CN108044814A (en) * 2018-01-03 2018-05-18 中铁广州工程局集团有限公司 The accurate cutter device of CFG pile heads
CN208650054U (en) * 2018-08-01 2019-03-26 中水电第十一工程局(郑州)有限公司 A kind of civil engineering pile crown, which is abolished, uses ring cutting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004070121A1 (en) * 2003-02-07 2004-08-19 Cementation Foundations Skanska Limited Techniques for pile breaking
JP5587678B2 (en) * 2010-06-18 2014-09-10 三谷セキサン株式会社 Ready-made pile cutting device
CN106836222A (en) * 2017-02-14 2017-06-13 王本勋 A kind of high ferro cushion cap pile crown girdling machine
CN108044814A (en) * 2018-01-03 2018-05-18 中铁广州工程局集团有限公司 The accurate cutter device of CFG pile heads
CN208650054U (en) * 2018-08-01 2019-03-26 中水电第十一工程局(郑州)有限公司 A kind of civil engineering pile crown, which is abolished, uses ring cutting device

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