CN111021355A - Hoisting type cast-in-place pile head cutting device - Google Patents
Hoisting type cast-in-place pile head cutting device Download PDFInfo
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- 238000005520 cutting process Methods 0.000 title claims abstract description 74
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 15
- 238000005452 bending Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
The invention discloses a pile head cutting device for a hoisting type cast-in-place pile, which comprises a supporting beam, a rotary driving mechanism, a cutting mechanism and a positioning mechanism, wherein the rotary driving mechanism comprises a power source, an output rotating shaft of the power source is respectively arranged in the middle of the supporting beam through a thrust bearing and a roller bearing, a rotary frame is fixed below the output rotating shaft, the rotary frame is of a cylindrical barrel or cylindrical frame structure, the cutting mechanism is positioned on the upper part of the rotary frame, and the positioning mechanism is positioned on the lower part of the rotary frame. The pile head cutting device is simple to operate when in use, high in construction efficiency when in use, flat in cutting section, free of damage to the reinforcing steel bar, free of bending deformation of the reinforcing steel bar, free of influence on tensile strength of the reinforcing steel bar, flush in height of the pile top after the pile head is broken, simple and convenient to operate, and labor-saving.
Description
Technical Field
The invention belongs to the technical field of building construction cutting tools, and particularly relates to a lifting type cast-in-place pile head cutting device applied to cutting off a cast-in-place pile head.
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 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 head cutting machine adopted in the existing pile head breaking construction, the invention provides the pile head cutting device which is simple in operation, can ensure that the cutting section is smooth, does not cause the damage of a reinforcing steel bar, does not cause the bending deformation of the reinforcing steel bar and does not influence the tensile strength of the reinforcing steel bar.
The technical scheme adopted by the invention for solving the technical problems is as follows: a lifting type cast-in-place pile head cutting device comprises a supporting beam, a rotary driving mechanism, a cutting mechanism and a positioning mechanism.
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 supporting 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 of the rotating shaft and the supporting 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.
An auxiliary support is fixed in the middle of the upper side of the supporting beam, a driving chamber is arranged in the middle of the auxiliary support, the power source comprises a motor and a gearbox, and the power source is located 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 and can be hoisted, lifted and lowered to meet the requirements of different foundations and pile heights, and the pile head of a cast-in-place pile can be cut. 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.
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 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.
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.
Reference numbers in the figures: hoisting hole 1, supporting beam 21, auxiliary support 23, driving chamber 24, motor 31, gearbox 32, rotating shaft 33, thrust bearing 34, roller bearing 35, conducting ring 36, rotating frame 37, side hole 38, fixing seat 39, cross sliding sleeve 41, external thread sleeve 42, adjusting screw 43, motor displacement adjusting hand wheel 44, motor thrust spring 45, motor seat 46, cutting motor 47, saw blade 48, cross sliding rod 49, adjusting screw 51, positioning screw 52, wheel seat 53, positioning pulley 54 and positioning spring 55.
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 by low construction efficiency, long time consumption in stripping main ribs and acoustic pipes and low efficiency, when the pile is broken by adopting the pneumatic pick, the damage to the reinforcing steel bars is easily caused, the bending deformation of the reinforcing steel bars is caused, the tensile strength is reduced, the connection between a pile body and a bearing platform is weakened, after the pile head is broken, the height of the pile top is uneven, the health of constructors can be influenced to a certain degree, the wrist and the arm of the operator can be damaged by huge trembling of the portable pneumatic equipment, and the generated noise and dust also form a poor working environment. Aiming at the problem, the pile head cutting device can effectively solve the problem by adopting the following embodiment, and the pile head cutting device which is simple in operation, can ensure that the cutting section is smooth, does not cause damage to the reinforcing steel bar, does not cause bending deformation of the reinforcing steel bar and does not influence the tensile strength of the reinforcing steel bar is provided. The invention is further illustrated with reference to the following figures and examples.
The pile head cutting device shown in fig. 1 mainly comprises a supporting beam 21, a rotary driving mechanism 3, a cutting mechanism 4, a positioning mechanism 5 and the like.
The supporting beam 21 is used as a basic frame of the device, rear hoisting holes 1 are formed in the upper end and the edge of the supporting beam, hoisting ropes are connected to the hoisting holes 1, the same lifting hook or lifting ring is fixed to each hoisting rope after the hoisting ropes are collected, and the device is hoisted through hoisting equipment. As shown in fig. 1, a sub-bracket 23 is fixed to the middle of the upper side of the supporting beam 21, and a driving chamber 24 is provided in the middle of the sub-bracket 23 for mounting 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. Output shaft 33 of power supply is installed through thrust bearing 34 and roller bearing 35 respectively support beam 11's middle part, is fixed with swivel mount 37 through fixing base 39 in output shaft 33's below simultaneously, and this swivel mount 37 is cylinder barrel or cylindrical frame structure, and this embodiment adopts cylinder barrel, but the circumference side of this cylinder barrel should leave the observation hole to in observing 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 supporting beam 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 fact that the cutting depth of the cast-in-place pile 8 is limited (the cast-in-place pile 8 is in a hollow tubular shape, the thickness of the tube wall of the cast-in-place pile 8 is limited), the range of the elastic force stroke of the motor thrust spring 45 is limited, the outward adjustment of the adjusting nut 43 is short, and the operation and the control are convenient.
Claims (2)
1. The pile head cutting device for the hoisting type cast-in-place pile is characterized by comprising a supporting beam (21), a row rotating driving mechanism (3), a cutting mechanism (4) and a positioning mechanism (5), wherein the rotating driving mechanism (3) comprises a power source, an output rotating shaft (33) of the power source is respectively installed in the middle of the supporting beam (21) through a thrust bearing (34) and a roller bearing (35), a rotating frame (37) is fixed below the output rotating shaft (33), the rotating frame (37) is of a cylindrical barrel or cylindrical frame structure, the cutting mechanism (4) is located on the upper portion of the rotating frame (37), and the positioning mechanism (5) is located on the lower 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), 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 rotating shaft (33) and the supporting beam (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. The pile head cutting device for the lift-type cast-in-place pile as claimed in claim 1, wherein an auxiliary support (23) is fixed in the middle of the upper side of the supporting beam (21), a driving chamber (24) is arranged in the middle of the auxiliary support (23), the power source comprises a motor (31) and a gearbox (32), and the power source is located in the driving chamber (24).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911321586.0A CN111021355B (en) | 2019-12-20 | 2019-12-20 | Hoisting type cast-in-place pile head cutting device |
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| CN201911321586.0A CN111021355B (en) | 2019-12-20 | 2019-12-20 | Hoisting type cast-in-place pile head cutting device |
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| CN111021355A true CN111021355A (en) | 2020-04-17 |
| CN111021355B CN111021355B (en) | 2022-02-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111851490A (en) * | 2020-08-25 | 2020-10-30 | 中铁上海工程局集团有限公司 | A CFG pile cutter |
| CN112392046A (en) * | 2020-11-05 | 2021-02-23 | 薛彪 | Pile cutting machine for constructional engineering |
| CN113199639A (en) * | 2021-05-06 | 2021-08-03 | 湖北远大建设集团有限公司 | Automatic butt joint positioning and cutting structure for concrete pile head |
| CN114108628A (en) * | 2021-12-07 | 2022-03-01 | 安徽重标建筑工程有限公司 | Chiseling device convenient for over-filling part of concrete filling pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111851490A (en) * | 2020-08-25 | 2020-10-30 | 中铁上海工程局集团有限公司 | A CFG pile cutter |
| CN112392046A (en) * | 2020-11-05 | 2021-02-23 | 薛彪 | Pile cutting machine for constructional engineering |
| CN113199639A (en) * | 2021-05-06 | 2021-08-03 | 湖北远大建设集团有限公司 | Automatic butt joint positioning and cutting structure for concrete pile head |
| CN114108628A (en) * | 2021-12-07 | 2022-03-01 | 安徽重标建筑工程有限公司 | Chiseling device convenient for over-filling part of concrete filling pile |
| CN114108628B (en) * | 2021-12-07 | 2023-02-21 | 安徽重标建筑工程有限公司 | Chiseling device convenient for over-filling part of concrete filling pile |
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|---|---|
| CN111021355B (en) | 2022-02-22 |
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