CN110847172B - Multi-ring multi-hole construction device for cutting unset cement concrete pile head - Google Patents
Multi-ring multi-hole construction device for cutting unset cement concrete pile head Download PDFInfo
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- CN110847172B CN110847172B CN201911053849.4A CN201911053849A CN110847172B CN 110847172 B CN110847172 B CN 110847172B CN 201911053849 A CN201911053849 A CN 201911053849A CN 110847172 B CN110847172 B CN 110847172B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
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Abstract
The invention relates to a multi-ring multi-hole construction device for cutting unset cement concrete pile heads, which comprises a fan-shaped blade box, a multi-ring multi-hole ring body and a transmission shaft, and is characterized in that the fan-shaped blade box is rotatably connected to the outer part of the transmission shaft through a bearing, the outer wall of the fan-shaped blade box is fixedly connected with the inner wall of the multi-ring multi-hole ring body, the outer side of the transmission shaft is connected with the multi-ring multi-hole ring body through a rectangular steel sheet, elliptical holes are arranged on the multi-ring multi-hole ring body, a plurality of elliptical holes are arranged on the elliptical holes, and are distributed on the multi-ring multi-hole ring body in an annular array manner, circular through holes on the ring body are matched with the elliptical holes on the multi-ring body for use, so that the multi-ring multi-hole construction device can be suitable for concrete piles with various reinforcing steel bars, the wet concrete can be wholly cut off.
Description
Technical Field
The invention belongs to the technical field of building and bridge construction, and particularly relates to a multi-ring multi-hole construction device for cutting off an unset cement concrete pile head.
Background
In the pouring process of the concrete cast-in-place pile, as the cement paste returns upwards and rises together with air bubbles in the concrete due to vibration, laitance is formed in a certain range of the pile top, and the strength of the concrete at the pile head part is difficult to ensure; in addition, when underwater concrete is poured, slurry and mortar mixtures at the pile head part are most accumulated, so that the concrete at the pile head part is relatively loose, and the strength of the concrete cannot meet the requirement. Therefore, the actual elevation requirement of the pile head of the concrete cast-in-place pile is higher than the design elevation by 500-1000mm during construction, and the higher part is broken manually or mechanically, and is generally called as a "pile chiseling head" or a "pile breaking head".
At present, the pile head is dug manually, useless concrete above the pile mark is broken by an air pick or other cutting equipment, and then main reinforcements in a reinforcement cage are stripped. Mechanical pile cutting head uses a plurality of modules to make up together and adapts to not equidimension stake, with a plurality of modules parallelly connected carry out the simultaneous extrusion through hydraulic line to the same cross-section of stake around the stake to the realization is to the fracture of this cross-section concrete, this kind of method can be because the position of reinforcing bar owner muscle and the device that the quantity is different and need the difference, the flexibility is poor, produces a large amount of concrete pieces simultaneously, difficult clearance.
Disclosure of Invention
The invention aims to provide a multi-ring multi-hole construction device for cutting an unset cement concrete pile head, and aims to solve the problems that the existing pile head is high in construction strength, low in efficiency, large in damage to reinforcing steel bars and prone to generate a large amount of concrete fragments.
In order to achieve the purpose, the invention provides the following technical scheme: a multi-ring multi-hole construction device for cutting off unset cement concrete pile heads comprises a fan-shaped blade box, a multi-ring multi-hole ring body and a transmission shaft, and is characterized in that the outer portion of the transmission shaft is rotatably connected with the fan-shaped blade box through a bearing, the outer wall of the fan-shaped blade box is fixedly connected with the inner wall of the multi-ring multi-hole ring body, the outer side of the transmission shaft is connected with the multi-ring multi-hole ring body through a rectangular steel sheet, waist holes are formed in the multi-ring multi-hole ring body, a plurality of the waist holes are distributed on the top end of the multi-ring multi-hole ring body in an annular array manner, ring pieces are arranged at the bottom end of the multi-ring multi-hole ring body, three ring pieces are arranged, the circle centers of the three ring pieces are located at the same point, the three ring pieces are rotatably connected through bearings, rotating one of the ring pieces, wherein a circular through hole corresponding to the position of the steel bar is formed at the bottom of a waist hole on the multi-ring porous ring body, and redundant gaps of the waist hole are blocked by the ring pieces to prevent concrete from permeating upwards; the diameter of the circular through hole is controlled to be 20-26mm, so that the diameter of the steel bar required by engineering can be adapted; the width of the multi-ring porous torus exceeds the sum of the thickness of the concrete pile protective layer and the diameter of the reinforcing steel bar; fan-shaped blade has been placed in the fan-shaped blade box, fan-shaped blade is provided with a plurality of, a plurality of fan-shaped blade stack is placed, the bottom fan-shaped blade and transmission shaft fixed connection, and the root of fan-shaped blade except that the bottom passes through bearing structure and the movable connection of transmission shaft, the side of fan-shaped blade is equipped with the linkage baffle, the transmission shaft drives bottom fan-shaped blade and rotates, and the linkage baffle drives other fan-shaped blade and opens out in proper order or withdraws.
Preferably, the upper end of the transmission shaft is provided with a leveling bubble and a hanging ring.
Preferably, the rectangular steel sheets are provided with a plurality of rectangular steel sheets which are distributed on the outer wall of the transmission shaft in an annular array shape, and a water service pipe and a micro-vibrator are arranged inside the rectangular steel sheets.
Preferably, the number position of the linkage baffle on a plurality of fan-shaped blade corresponds each other, and the linkage baffle is located the both sides of fan-shaped blade, and the thickness of the linkage baffle of side is greater than the thickness of fan-shaped blade, and every in a plurality of fan-shaped blade all can drive its top and the fan-shaped blade motion of below through the linkage baffle of side.
Preferably, the motor is installed on the top of transmission shaft, the motor passes through pivot and transmission shaft rotatable coupling, the outside fixed mounting of motor has the support frame.
Preferably, water service pipes are arranged inside the transmission shaft and the rectangular steel sheet, water spraying holes are formed in the lower end of the transmission shaft and the bottom surface and the side surface of the rectangular steel sheet, the water spraying holes in the lower end of the transmission shaft and the bottom surface of the rectangular steel sheet are upwards inclined, the water spraying holes in the side surface of the rectangular steel sheet are downwards inclined, the tail ends of the water service pipes extend to the water spraying holes, and the initial ends of the water service pipes are connected with a high-pressure water source through pipelines.
Preferably, an electromagnetic spring is arranged between the root ring of the fan-shaped blade on the top layer and the inner upper wall of the fan-shaped blade box.
Compared with the prior art, the invention has the following beneficial effects:
(1) the circular through holes on the ring pieces are matched with the waist holes on the multi-ring multi-hole ring body for use, so that the concrete pile can be suitable for concrete piles with various quantities, positions, diameters and distributions of reinforcing steel bars, and has strong flexibility and wide application range. The diameter of the circular through hole can adapt to the diameter of the steel bar required by engineering, and according to the actual distribution condition of the steel bar in the cement concrete pile, the circular through hole on the ring piece corresponds to the waist hole on the multi-ring porous ring body by adjusting the corresponding ring piece on the bottom surface of the multi-ring porous ring body, and the redundant gaps of the waist hole are blocked by other ring pieces, so that the cement concrete pile can adapt to the distribution of the steel bar in various quantities and positions.
(2) The invention utilizes the combination of the fan-shaped blade and the multi-ring multi-hole annular body to remove wet concrete integrally. The fan-shaped blade is sequentially unfolded through the linkage baffle to form an approximate circular plane, and is combined with a multi-ring multi-hole ring body with the width exceeding the sum of the thickness of a concrete pile protective layer and the diameter of a steel bar for use, so that the concrete at the elevation can be simply and efficiently divided into an upper part and a lower part, the concrete above the elevation is integrally removed in the later period, the cross section is approximately flat, the construction efficiency is high, the construction period is shortened, and the cost is low.
(3) The side edges of the fan-shaped blades are provided with the linkage baffle plates, so that the adjacent fan-shaped blades can be mutually driven to unfold and fold, the fan-shaped blade at the bottommost layer is driven to unfold and fold through the transmission shaft, and the other fan-shaped blades are sequentially driven to unfold and fold through the linkage baffle plates at the side edges to form an approximate plane, so that the fan-shaped blades can be folded and folded, the size of the device is reduced, the space is saved, and the concrete can be effectively cut off integrally.
(4) The fan-shaped blade of the device can cut off the concrete before the concrete is not solidified, so that dust and noise can be reduced, concrete residues are prevented from splashing, the health and safety of construction personnel are guaranteed, the cut and left unset concrete can be reused when necessary, the secondary cleaning of the concrete is avoided, and engineering garbage is reduced.
(5) The micro-vibrator in the rectangular steel sheet of the device can level the device, ensure that the divided concrete surface is similar to a plane, compact the concrete under the elevation, enhance the strength of the concrete, and in addition, when the fan-shaped blades are cleaned, the micro-vibrator is started, and the concrete residues in the gaps of the blades can be removed.
(6) The device can adjust the extension and retraction of the electromagnetic spring when the fan-shaped blade is unfolded and cleaned, and can extrude the fan-shaped blade when the fan-shaped blade is unfolded so that the fan-shaped blade is tighter and cannot fall off during unfolding, and can be contracted during the folding of the fan-shaped blade so that the fan-shaped blade is loose, thereby being beneficial to cleaning concrete residues between gaps of the fan-shaped blade and reducing the damage to the device.
(7) After the device provided by the invention is used for cutting off concrete, the water spray holes can be used for repeatedly cleaning concrete residues on the fan-shaped blade and other components, so that the later damage of the device is prevented, and the device can be used normally again.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic view of the bottom surface of the circular through hole of the present invention;
FIG. 3 is a drawing illustrating the process of expanding and contracting the fan-shaped blade according to the present invention;
FIG. 4 is a schematic view of a fan blade of the present invention;
figure 5 is a cross-sectional view of a fan-shaped blade cartridge of the present invention;
FIG. 6 is a diagram illustrating the effect of the fan blade linkage of the present invention;
FIG. 7 is a schematic view of a rectangular steel sheet of the present invention;
FIG. 8 is a view showing the effect of the present invention.
In the figure: 1-fan-shaped blade box, 2-waist hole, 3-multi-ring multi-hole ring body, 4-transmission shaft, 5-rectangular steel sheet, 6-water spray hole, 7-flying ring, 8-leveling bubble, 9-ring sheet, 10-linkage baffle, 11-fan-shaped blade, 12-circular through hole, 13-micro vibrator, 14-electromagnetic spring, 15-motor and 16-support frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions: a multi-ring multi-hole construction device for cutting off unset cement concrete pile heads comprises a fan-shaped blade box 1, a multi-ring multi-hole ring body 3 and a transmission shaft 4, and is characterized in that the fan-shaped blade box 1 is rotatably connected to the outer portion of the transmission shaft 4 through a bearing, the outer wall of the fan-shaped blade box 1 is fixedly connected with the inner wall of the multi-ring multi-hole ring body 3, the outer side of the transmission shaft 4 is connected with the multi-ring multi-hole ring body 3 through a rectangular steel sheet 5, the multi-ring multi-hole ring body 3 is provided with a plurality of waist holes 2, the plurality of waist holes 2 are distributed at the top end of the multi-ring multi-hole ring body 3 in an annular array manner, ring sheets 9 are arranged at the bottom end of the multi-ring multi-hole ring body 3, the number of the ring sheets 9 is three, the centers of the three ring sheets 9 are located at the same point, one of the ring pieces 9 is rotated, a circular through hole 12 corresponding to the position of the steel bar appears at the bottom of the waist hole 2 on the multi-ring porous ring body 3, and redundant gaps of the waist hole 2 are blocked by the rest ring pieces 9, so that concrete is prevented from permeating upwards; the diameter of the circular through hole 12 is controlled to be 20-26mm, so that the diameter of the steel bar required by engineering can be adapted; the circular through holes 12 on the ring piece 9 are matched with the waist holes 2 on the multi-ring multi-hole ring body 3 for use, and the concrete pile can be suitable for concrete piles with various numbers, positions, diameters and distributions of reinforcing steel bars; fan-shaped blade 11 has been placed in fan-shaped blade box 1, fan-shaped blade 11 is provided with a plurality of, and fan-shaped blade 11 of a plurality of superposes and places, fan-shaped blade 11 of bottommost layer and 4 fixed connection of transmission shaft, the root of fan-shaped blade 11 except bottommost layer is passed through bearing structure and is connected with 4 movable of transmission shaft, and the side of fan-shaped blade 11 is equipped with linkage baffle 10, and transmission shaft 4 drives fan-shaped blade 11 of bottommost layer and rotates, and linkage baffle 10 drives other fan-shaped blade 11 and opens out or withdraws in proper order after that. The width of the multi-ring porous ring body 3 exceeds the sum of the thickness of the concrete pile protective layer and the diameter of the reinforcing steel bar. The unfolded fan-shaped blade 11 is combined with the multi-ring multi-hole ring body 3 for use, so that wet concrete can be cut off integrally.
The upper end of the transmission shaft 4 is provided with a leveling bubble 8 and a hanging ring 7.
The rectangular steel sheets 5 are arranged in a plurality of annular arrays on the outer wall of the transmission shaft 4, and a water pipe and a micro-vibrator 13 are arranged inside the rectangular steel sheets 5.
The number position of the linkage baffle 10 on the fan-shaped blade 11 of a plurality of corresponds each other, and linkage baffle 10 is located the both sides of fan-shaped blade 11, and the thickness of the linkage baffle 10 of side is greater than the thickness of fan-shaped blade 11, and every in the fan-shaped blade 11 of a plurality of all can drive the fan-shaped blade 11 motion of its top and below through the linkage baffle 10 of side.
The motor 15 is installed on the top of transmission shaft 4, and motor 15 passes through pivot and transmission shaft 4 rotatable coupling, and the outside fixed mounting of motor 15 has support frame 16.
The water service pipe is arranged inside the transmission shaft 4 and the rectangular steel sheet 5, the water spraying holes 6 are formed in the lower end of the transmission shaft 4 and the bottom surface and the side surface of the rectangular steel sheet 5, the water spraying holes 6 in the lower end of the transmission shaft 4 and the bottom surface of the rectangular steel sheet 5 incline upwards, the water spraying holes 6 in the side surface of the rectangular steel sheet 5 incline downwards, the tail end of the water service pipe extends to the water spraying holes 6, and the initial end of the water service pipe is connected with a high.
An electromagnetic spring 14 is arranged between the root ring of the top fan-shaped blade 11 and the inner upper wall of the fan-shaped blade box 1.
The working principle and the using process of the invention are as follows: when the concrete pouring device is used, concrete is poured, and the concrete is poured to the elevation position in the concrete mould; adjusting the circular through holes 12, rotating one of the three ring pieces 9 at the lower side of the multi-ring multi-hole ring body 3 according to the position and distribution of the steel bars to ensure that the circular through holes 12 at the upper side correspond to the positions of the steel bars, the circular through holes 12 corresponding to the steel bars are superposed with the waist holes 2 for the steel bars to pass through, rotating the other ring pieces 9 to ensure that the non-circular through holes are superposed with the waist holes 2 to seal the parts without the steel bars on the waist holes 2, preventing later concrete from permeating, and controlling the diameter of the circular through holes 12 to be 20-26mm to ensure that the circular through holes 12 can be sleeved with the steel bars, so that the diameter of the steel bars required by engineering can; the placing device is used for enabling the steel bars to penetrate through the previously adjusted circular through holes 12 and then placing the device at the high position of the concrete pile head; protecting the steel bars, namely sleeving PVC sleeves on the steel bars above the elevation after the device is placed at the elevation, wherein the upper and lower openings of the sleeves are blocked by soft elastic materials and are fixed by iron wires to be used for fixing the PVC sleeves and preventing concrete from permeating into the pipes; filling the pile head, and continuously pouring concrete above the device until the concrete reaches the elevation of 500-1000 mm; leveling the device, namely starting a corresponding micro-vibrator 13 on the rectangular steel sheet 5 according to specific construction conditions to level the device, and performing level judgment according to a level bubble 8 at the upper end of the transmission shaft 4; the fan-shaped blades 11 are unfolded, a motor 15 arranged at the upper end of the transmission shaft 4 is started to drive the transmission shaft 4 to rotate, the transmission shaft 4 drives the fan-shaped blades 11 at the bottom layer to be unfolded, and the other fan-shaped blades 11 are sequentially unfolded through the linkage baffle 10 at the edge of the fan-shaped blades 11; waste recovery, namely taking away the device and the redundant concrete materials above the device by a crane through a lifting ring 7, and cleaning and recovering the device; cleaning the fan-shaped blade, adjusting the motor 15 to reversely rotate to enable the fan-shaped blade 11 to be retracted, and spraying water to the lower end of the transmission shaft 4 and the water spraying holes 6 on the side surface and the bottom surface of the rectangular steel sheet 5 in the process to clean concrete residues on the upper side and the lower side of the fan-shaped blade 11; the whole cleaning is carried out, concrete residues on the multi-ring porous ring body 3 and the transmission shaft 4 are cleaned by using an external water pipe, and the damage to the device is reduced; and repeatedly cleaning, repeatedly unfolding and folding the fan-shaped blade 11 after primary cleaning, cleaning concrete residues on the fan-shaped blade 11 for multiple times, and repeatedly cleaning residual concrete on the whole device.
When the device is placed, the fan-shaped blades 11 and the fan-shaped blade box 1 have a certain thickness, the thickness can be controlled within 50mm, and the device is placed within 50mm below the concrete elevation.
When the device is leveled, the leveling judgment is carried out according to the leveling bubble 8 at the upper end of the transmission shaft 4, and then the micro-vibrator 13 in the rectangular steel sheet 5 at the corresponding position is started to level the device.
The electromagnetic spring 14 is controlled by the control power supply, and is electrified and stretched when the fan-shaped blade 11 is unfolded, so that the linkage effect of the fan-shaped blade 11 is better, and the fan-shaped blade 11 is contracted when being cleaned, so that the fan-shaped blade 11 is slightly loosened, and the cleaning of concrete residues in gaps among the fan-shaped blades 11 is facilitated.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a cut porous construction equipment of multiple ring of unset cement concrete pile head, includes fan-shaped blade box (1), the porous tourus of multiple ring (3), transmission shaft (4), its characterized in that, there is fan-shaped blade box (1) transmission shaft (4) outside through bearing rotatable coupling, the outer wall of fan-shaped blade box (1) and the inner wall fixed connection of the porous tourus of multiple ring (3), the outside of transmission shaft (4) links to each other through rectangle steel sheet (5) with the porous tourus of multiple ring (3), be equipped with waist hole (2) on the porous tourus of multiple ring (3), waist hole (2) are provided with a plurality of altogether, a plurality of waist hole (2) are annular array form and distribute on the porous tourus of multiple ring (3), the bottom of the porous tourus of multiple ring (3) is equipped with ring piece (9), ring piece (9) are provided with threely, the centers of the three ring pieces (9) are located at the same point, the three ring pieces (9) are rotatably connected through a bearing, circular through holes (12) corresponding to the waist holes (2) in number and position are formed in the ring pieces (9), one of the ring pieces (9) is rotated, the circular through holes (12) corresponding to the positions of the reinforcing steel bars appear at the bottoms of the waist holes (2) in the multi-ring porous ring body (3), and redundant gaps of the waist holes (2) are blocked by the ring pieces (9) to prevent concrete from permeating upwards; the diameter of the circular through hole (12) is controlled to be 20-26mm, so that the diameter of the steel bar can be adapted to the diameter of the engineering required steel bar; the width of the multi-ring porous ring body (3) exceeds the sum of the thickness of the concrete pile protective layer and the diameter of the reinforcing steel bar; fan-shaped blade (11) have been placed in fan-shaped blade box (1), fan-shaped blade (11) are provided with a plurality of, a plurality of fan-shaped blade (11) stack is placed, the bottom fan-shaped blade (11) and transmission shaft (4) fixed connection, and the root of fan-shaped blade (11) except the bottom layer passes through bearing structure and is movably connected with transmission shaft (4), the side of fan-shaped blade (11) is equipped with linkage baffle (10), transmission shaft (4) drive fan-shaped blade (11) of bottom rotate, and linkage baffle (10) drive other fan-shaped blade (11) and demonstrate in proper order or withdraw.
2. The multi-ring multi-hole construction device for cutting the unset cement concrete pile head according to claim 1, wherein: the upper end of the transmission shaft (4) is provided with a leveling bubble (8) and a hanging ring (7).
3. The multi-ring multi-hole construction device for cutting the unset cement concrete pile head according to claim 1, wherein: the rectangular steel sheet (5) is provided with a plurality of rectangular steel sheets (5) which are distributed on the outer wall of the transmission shaft (4) in an annular array shape, and a water service pipe and a micro-vibrator (13) are arranged inside the rectangular steel sheets (5).
4. The multi-ring multi-hole construction device for cutting the unset cement concrete pile head according to claim 1, wherein: the number position of linkage baffle (10) on a plurality of fan-shaped blade (11) corresponds each other, and linkage baffle (10) are located the both sides of fan-shaped blade (11), and the thickness of the linkage baffle (10) of side is greater than the thickness of fan-shaped blade (11), and every in a plurality of fan-shaped blade (11) all can drive fan-shaped blade (11) motion of its top and below through linkage baffle (10) of side.
5. The multi-ring multi-hole construction device for cutting the unset cement concrete pile head according to claim 1, wherein: motor (15) are installed on the top of transmission shaft (4), motor (15) are through pivot and transmission shaft (4) rotatable coupling, the outside fixed mounting of motor (15) has support frame (16).
6. The multi-ring multi-hole construction device for cutting the unset cement concrete pile head according to claim 3, wherein: the water supply pipe is arranged inside the transmission shaft (4) and the rectangular steel sheet (5), water spraying holes (6) are formed in the lower end of the transmission shaft (4), the bottom surface of the rectangular steel sheet (5) and the side surfaces of the transmission shaft (4), the water spraying holes (6) in the lower end of the transmission shaft (4) and the bottom surface of the rectangular steel sheet (5) are inclined upwards, the water spraying holes (6) in the side surfaces of the rectangular steel sheet (5) are inclined downwards, the tail end of the water supply pipe extends to the water spraying holes (6), and the initial end of the water supply pipe is connected with a high.
7. The multi-ring multi-hole construction device for cutting the unset cement concrete pile head according to claim 1, wherein: an electromagnetic spring (14) is arranged between the root ring of the top fan-shaped blade (11) and the inner upper wall of the fan-shaped blade box (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911053849.4A CN110847172B (en) | 2019-10-31 | 2019-10-31 | Multi-ring multi-hole construction device for cutting unset cement concrete pile head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911053849.4A CN110847172B (en) | 2019-10-31 | 2019-10-31 | Multi-ring multi-hole construction device for cutting unset cement concrete pile head |
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| CN110847172B true CN110847172B (en) | 2021-06-29 |
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| CN109457701A (en) * | 2018-12-27 | 2019-03-12 | 中铁七局集团有限公司 | A kind of device for excising of railway bed laying cement-soil compaction pile pile crown |
| CN110185037A (en) * | 2019-06-27 | 2019-08-30 | 中铁五局集团建筑工程有限责任公司 | A kind of bored concrete pile is without mechanical broken pile head method and structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201287400Y (en) * | 2008-09-17 | 2009-08-12 | 中国建筑第四工程局有限公司 | Pile cutting machine |
| CN202644533U (en) * | 2012-04-27 | 2013-01-02 | 江苏平汉重工有限公司 | Full automatic hydraulic pile cutting machine |
| CN104234038A (en) * | 2014-03-03 | 2014-12-24 | 王磊 | Bored concrete pile construction technology without breaking of pile head |
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| Publication number | Publication date |
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| CN110847172A (en) | 2020-02-28 |
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Inventor after: Wu Dun Inventor after: Shi Tingting Inventor after: Ma Zhiping Inventor after: Wang Fang Inventor after: Xiao Yong Inventor after: Zhang Hongbo Inventor after: Cheng Huhao Inventor after: Liu Yi Inventor after: Niu Kangzhuang Inventor after: Sun Chenglin Inventor after: Ma Shuai Inventor before: Wang Fang Inventor before: Ma Zhiping Inventor before: Xiao Yong Inventor before: Zhang Hongbo Inventor before: Cheng Huhao Inventor before: Liu Yi Inventor before: Niu Kangzhuang Inventor before: Sun Chenglin Inventor before: Ma Shuai Inventor before: Shi Tingting |
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