CN113585263B - Pile head breaking equipment and pile head breaking method - Google Patents
Pile head breaking equipment and pile head breaking method Download PDFInfo
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- CN113585263B CN113585263B CN202110853911.9A CN202110853911A CN113585263B CN 113585263 B CN113585263 B CN 113585263B CN 202110853911 A CN202110853911 A CN 202110853911A CN 113585263 B CN113585263 B CN 113585263B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 238000005553 drilling Methods 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 238000004080 punching Methods 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000003116 impacting effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses pile head breaking equipment and a pile head breaking method, wherein the pile head breaking equipment comprises a punching mechanism and a grouting mechanism; the punching mechanism comprises a first hoop and a drilling machine; the grouting mechanism is used for injecting the expansion slurry into the expansion holes. Through setting up first hoop, and install the drilling machine on first hoop to inject the inflation hole that the drilling machine excavated and form and all form in the plane that first hoop encloses, when carrying out static expansion, the synchronous atress of coplanar can make the pile head fracture more easily. Meanwhile, by arranging the grouting mechanism for injecting the expansion slurry into the expansion holes, under the action of the expansion force of the expansion slurry, the upper pile head is broken by the upward thrust exerted by the expansion slurry by taking the plane formed with the expansion holes as a boundary. Compared with the prior art that the impact mechanism is used for synchronously impacting, the invention has the advantages that the expansion force of the expansion slurry is gradually developed, the process is milder, obvious noise is not formed, and the invention has no negative effect on surrounding personnel and nearby residents.
Description
Technical Field
The invention relates to the technical field of pile foundation construction, in particular to pile head breaking equipment and a pile head breaking method.
Background
In order to ensure that the quality of the pile foundation meets the quality requirement, when the cast-in-place pile is cast, the elevation of the top of the cast-in-place pile is usually 0.8-1.0 m higher than the elevation of the top of the designed pile. After the concrete is solidified and formed, the pile head higher than the designed pile top elevation needs to be broken, and the work of chiseling off the pile head concrete is called as pile head breaking.
The method for breaking the pile head is divided into manual breaking and mechanical breaking, and the time required for manually breaking the pile head is longer and is gradually replaced by mechanical construction. The existing machinery for breaking pile heads adopts a mode that a plurality of impact devices encircle the pile heads to impact simultaneously so as to break the pile heads, and then the broken pile heads are lifted off by using lifting devices. Because the impact force is large, a severe sound is generated in the pile head breaking process, the hearing of constructors is seriously damaged, the normal life of nearby residents is also influenced, moreover, concrete fragments caused by the impact force collapse everywhere, and the damage to nearby personnel and equipment is easily caused.
Disclosure of Invention
The invention mainly aims to provide pile head breaking equipment and a pile head breaking method, and aims to solve the problem that the existing pile head breaking equipment and the existing pile head breaking method are overlarge in noise.
In order to achieve the above purpose, the invention firstly provides pile head breaking equipment, which comprises a punching mechanism and a grouting mechanism;
the grouting mechanism is used for injecting the expansion slurry into the expansion hole; the middle part of the first hoop is provided with a chute along the circumferential direction of the pile, and the first hoop is detachably sleeved on the outer wall of the pile head and is fixed with the pile head through a fastener; the drilling machine is arranged in the chute of the first hoop.
Preferably, the first hoop is formed by splicing a plurality of elastic arc-shaped sections, and two adjacent arc-shaped sections are connected by a buckle.
Preferably, a plurality of track plates are slidably mounted in the sliding groove of the first hoop, and the track plates can be positioned in the sliding groove through a locking device; the middle part of track board has seted up the mounting hole, drilling machine detachably fixes in the mounting hole.
Preferably, the track plate is matched to the curvature of the runner, preferably the arcuate track plate is made of resilient steel to enable adaptation to the track grooves of different radii.
Preferably, the grouting mechanism comprises a storage bin and a booster pump; the storage bin comprises a solid bin for storing an expanding agent and a liquid bin for storing clear water, the solid bin and the liquid bin are connected with the grouting head through the booster pump, and the solid bin and the liquid bin can simultaneously spray storage matters into the booster pump so that the expanding agent and the clear water are mixed to form the expanded slurry when entering the booster pump; the booster pump is used for injecting the expansion slurry into the expansion holes.
Preferably, a separation mechanism is included; the separation mechanism comprises a second hoop and a support leg; the second hoop is detachably fixed on the pile head; a plurality of support legs are circumferentially distributed on the second hoop, the top ends of the support legs are fixedly connected with the second hoop, and the bottom ends of the support legs are supported on the construction ground; and the supporting legs are provided with jacking devices for adjusting the lengths of the supporting legs.
Preferably, the second hoop and the first hoop have the same structure and are formed by splicing a plurality of sections of arc-shaped sections with elasticity, and two adjacent sections of arc-shaped sections are connected by a buckle.
In order to achieve the above object, the present invention further provides a pile head breaking method, which applies the pile head breaking apparatus of any one of the above; the pile head breaking method comprises the following steps:
step S10, sleeving a first hoop ring provided with a drilling machine on a pile head;
s20, a plurality of expansion holes are drilled along the pile head in the circumferential direction through the drilling machine;
s30, removing the punching mechanism and installing the grouting mechanism;
and S40, injecting expansion slurry into the expansion holes through a grouting mechanism.
Preferably, the step S40 includes:
step S41, filling an expanding agent in a solid bin and filling clear water in a liquid bin;
step S42, simultaneously starting the discharge ports of the solid bin and the liquid bin, spraying the expanding agent from the solid bin, spraying clear water from the liquid bin, mixing the solid bin and the liquid bin to form expanded slurry, and flowing into a booster pump;
and step S43, starting the booster pump, and injecting the expansion slurry into the expansion holes.
Preferably, after the step S30, the method further includes:
s50, removing the grouting mechanism;
step S60, under the expansion of the expansion slurry, the upper part of the pile head is broken, and a breaking layer is formed on the plane of the expansion hole;
step S70, installing a separation mechanism, and sleeving a second hoop on the upper part of the fracture layer of the pile head;
step S80, extending the support legs through a jacking device, and jacking up the second hoop fixed with the broken pile head along the extending direction of the pile head so as to separate the broken pile head from the steel bars;
and S90, the external hoisting equipment takes over the separating mechanism to hoist the broken pile head away.
By adopting the structure and the method, the first hoop is arranged, the drilling machine is arranged on the first hoop, expansion holes formed by the drilling machine are limited to be formed in the plane surrounded by the first hoop, and when static expansion is carried out, the same plane is stressed synchronously, so that the pile head can be broken more easily. Meanwhile, by arranging the grouting mechanism, the grouting device is used for injecting the expansion slurry into the expansion holes, and under the action of the expansion force of the expansion slurry, the upper pile head is broken by the upward thrust exerted by the expansion slurry by taking the plane formed with the expansion holes as a boundary. Compared with the prior art that the impact mechanism is used for synchronously impacting, the invention has the advantages that the expansion force of the expansion slurry is gradually developed, the process is milder, obvious noise is not formed, and the invention has no negative effect on surrounding personnel and nearby residents.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the installation of pile head breaking apparatus of the present invention;
FIG. 2 is a schematic view of pile head breaking apparatus according to the present invention;
FIG. 3 is a schematic diagram of the assembly of the pile head breaker rig of the present invention with a track slab;
FIG. 4 is a flow chart of the present invention.
Reference numerals illustrate: 1. a first hoop; 11. a track plate; 2. a drilling machine; 21. a body; 22. and (3) drilling rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The invention provides pile head breaking equipment.
Referring to fig. 1, in one embodiment of the pile head breaking apparatus, the apparatus includes a punching mechanism and a grouting mechanism;
the punching mechanism comprises a first hoop 1 and a drilling machine 2; the first hoop 1 is of a double-layer parallel circular ring structure, and the first hoop 1 can be detachably sleeved on the outer wall of the pile head and is fixed with the pile head through a fastener; the drilling machine 2 is arranged on the first hoop 1, and the drilling machine 2 is used for cutting an expansion hole on a pile head;
the grouting mechanism is used for injecting expansion slurry into the expansion holes.
Specifically, the first hoop 1 is a double-layer parallel ring structure, the drilling machine 2 is installed between the gaps of the two annular rings, and the drilling machine 2 can perform annular movement along the first hoop 1 so as to adjust the position of the drilling hole. Since the drilling machine 2 is located between the gaps of the two annular rings, the top end and the bottom end of the drilling machine 2 can be connected with the two annular rings respectively, so that the drilling machine is more stable. Furthermore, the drill 2 is connected with the annular ring in a hinged manner, and the drill 2 can be rotated in the transverse direction to adjust the drilling angle. The drilling machine 2 comprises a body 21 and a drill rod 22, wherein the drill rod 22 transversely penetrates through the body 21 and is driven by the body 21 to drill into the pile head; the drill rod 22 is a hollow rod, one end of the drill rod 22, which is far away from the pile head, is connected with a high-pressure air pump, and the high-pressure air pump fills high-pressure air into the expansion hole in the drilling process. During drilling, the drill bit rotates to crush concrete, and crushed concrete blocks are accumulated in the drill hole and cannot be discharged, so that the drill bit can be blocked. Therefore, by arranging the high-pressure air pump, high-pressure air is continuously filled into the drill hole in the drilling process, and the internal concrete slag is timely discharged.
Further, a plurality of drilling machines 2 can be installed on the first hoop 1 at the same time, so that simultaneous cutting is achieved, and construction progress is quickened.
By arranging the first hoop 1 and installing the drilling machine 2 on the first hoop 1, expansion holes formed by the drilling machine 2 are formed in a plane surrounded by the first hoop 1, and when static expansion is performed, the same plane is stressed synchronously, so that the pile head can be broken more easily. Meanwhile, by arranging the grouting mechanism, the grouting device is used for injecting the expansion slurry into the expansion holes, and under the action of the expansion force of the expansion slurry, the upper pile head is broken by the upward thrust exerted by the expansion slurry by taking the plane formed with the expansion holes as a boundary. Compared with the prior art that the impact mechanism is used for synchronously impacting, the invention has the advantages that the expansion force of the expansion slurry is gradually developed, the process is milder, obvious noise is not formed, and the invention has no negative effect on surrounding personnel and nearby residents.
Preferably, the first hoop 1 is formed by splicing a plurality of elastic arc-shaped sections, and two adjacent arc-shaped sections are connected by a buckle.
In order to adapt to pile heads with different pile diameters, the first hoop 1 is formed by splicing a plurality of elastic arc-shaped sections, and when the pile diameter is larger, an annular ring with a corresponding diameter can be formed by increasing the number of the arc-shaped sections, and vice versa. Furthermore, in order to be able to adjust the diameter of the first hoop 1 in a small way, the adjacent satin segments are connected by means of buckles, between which an adjusting mechanism is arranged, which enables a moderate expansion and contraction.
Preferably, the first hoop 1 is formed with an annular track groove in which a plurality of arc-shaped track plates 11 are slidably installed; the middle part of the track plate 11 is provided with a mounting hole, and the drilling machine 2 is detachably fixed in the mounting hole.
By providing the track plate 11, a connection basis is provided for the drilling machine 2 and the first hoop 1. The track plate 11 can slide in the track groove, and then drives the drilling machine 2 to move along the annular direction of the first hoop 1, so that the drilling position can be changed.
Preferably, the arcuate track plate 11 is made of resilient steel to be able to accommodate said track grooves of different radii.
Because the first hoop 1 is formed by splicing a plurality of elastic arc-shaped sections, when the pile heads with different pile diameters are adapted, the diameter of the first hoop 1 is changed along with the change, and correspondingly, the radian of the track groove is correspondingly changed. In order to be able to adapt the track plate 11 to the track groove at all times, it is made of an elastic steel material in order to be able to follow the change of the track groove.
Preferably, the grouting mechanism comprises a storage bin and a booster pump; the storage bin is divided into a solid bin for storing an expanding agent and a liquid bin for storing clear water, and the solid bin and the liquid bin can simultaneously spray storage matters into the booster pump so that the expanding agent and the clear water are mixed to form the expanded slurry when entering the booster pump; the booster pump is used for injecting the expansion slurry into the expansion holes.
Specifically, the solid bin and the liquid bin are both closed bins, and supercharging devices are arranged in the solid bin and the liquid bin.
The expanding agent is dry powder, and when it encounters water, it chemically reacts to expand. In order to avoid the damp failure, the solid bin is arranged as a closed bin, so that the expanding agent can be stored stably for a longer time. Meanwhile, in order to ensure that the expanding agent and the clear water are more fully mixed, supercharging devices are arranged in the two closed bins, the supercharging devices supercharge the closed bins before the discharge holes are opened, and when the discharge holes are opened, the expanding agent and the clear water are ejected, collided and mixed at a high speed because the pressure in the bins is higher than that outside the bins, so that the expanded slurry is formed.
Preferably, the pile head breaking device further comprises a separation mechanism;
the separation mechanism comprises a second hoop and a support leg;
the second hoop is detachably fixed at the upper part of the pile head fracture layer;
the top ends of the supporting feet are connected with the second hoop, and the bottom ends of the supporting feet are supported on the construction ground; and the middle or bottom end of the support leg is provided with a jacking device for adjusting the length of the support leg.
In the prior art, the upper pile head is usually pulled directly from the reinforcing bar using an external hoisting device such as a crane, an excavator, or the like. However, because the upper pile head is tightly connected with the steel bar, the steel bar is easy to damage in the forced pulling process, and the external hoisting equipment is possibly unstable to overturn. In the invention, by arranging the separating mechanism, the upper pile head is separated from the steel bar by the jacking device, and then the outer hoisting equipment only needs to bear the gravity of the upper pile head when the outer hoisting equipment is used for hoisting, thereby greatly reducing the work load and the construction risk.
Preferably, the second hoop is formed by splicing a plurality of elastic arc-shaped sections, and two adjacent arc-shaped sections are connected by a buckle.
In order to adapt to pile heads with different pile diameters, the second hoop is formed by splicing a plurality of elastic arc-shaped sections, and when the pile diameter is larger, an annular ring with a corresponding diameter can be formed by increasing the number of the arc-shaped sections, and vice versa. Furthermore, in order to be able to adjust the diameter of the second hoop in a small way, the adjacent satin arc segments are connected by buckles, and an adjusting mechanism is arranged between the buckles, so that moderate expansion and contraction can be performed.
The invention also discloses a pile head breaking method, referring to fig. 1, in an embodiment of the method, the pile head breaking device is applied; the pile head breaking method comprises the following steps:
step S10, sleeving a first hoop 1 provided with a drilling machine 2 on a pile head;
s20, a plurality of expansion holes are drilled along the pile head in the circumferential direction through the drilling machine 2;
s30, removing the punching mechanism and installing the grouting mechanism;
and S40, injecting expansion slurry into the expansion holes through a grouting mechanism.
By injecting the expansion paste into the expansion hole, the expansion paste gradually expands, and the upper pile head can be broken after receiving the upward thrust. The expansion force in the process is gradually developed, the process is milder, obvious noise is not formed, and the expansion force has no negative effect on surrounding personnel and nearby residents.
Preferably, the step S40 includes:
step S41, filling an expanding agent in a solid bin and filling clear water in a liquid bin;
step S42, simultaneously starting the discharge ports of the solid bin and the liquid bin, spraying the expanding agent from the solid bin, spraying clear water from the liquid bin, mixing the solid bin and the liquid bin to form expanded slurry, and flowing into a booster pump;
and step S43, starting the booster pump, and injecting the expansion slurry into the expansion holes.
Preferably, after the step S30, the method further includes:
s50, removing the grouting mechanism;
step S60, under the expansion of the expansion slurry, the upper part of the pile head is broken, and a breaking layer is formed on the plane of the expansion hole;
step S70, installing a separation mechanism, and sleeving a second hoop on the upper part of the fracture layer of the pile head;
step S80, extending the support legs through a jacking device, and jacking up the second hoop fixed with the broken pile head along the extending direction of the pile head so as to separate the broken pile head from the steel bars;
and S90, the external hoisting equipment takes over the separating mechanism to hoist the broken pile head away.
The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather utilizing equivalent structural changes made in the present invention description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (7)
1. The pile head breaking equipment is characterized by comprising a punching mechanism and a grouting mechanism;
the grouting mechanism is used for injecting the expansion slurry into the expansion hole; the middle part of the first hoop is provided with a chute along the circumferential direction of the pile, and the first hoop is detachably sleeved on the outer wall of the pile head and is fixed with the pile head through a fastener; the drilling machine is arranged in the chute of the first hoop;
a plurality of track plates are slidably arranged in the sliding groove of the first hoop, and the track plates can be positioned in the sliding groove through a locking device; the middle part of the track plate is provided with a mounting hole, and the drilling machine is detachably fixed in the mounting hole;
comprises a separating mechanism; the separation mechanism comprises a second hoop and a support leg; the second hoop is detachably fixed on the pile head; a plurality of support legs are circumferentially distributed on the second hoop, the top ends of the support legs are fixedly connected with the second hoop, and the bottom ends of the support legs are supported on the construction ground; the supporting legs are provided with jacking devices for adjusting the lengths of the supporting legs;
the second hoop is identical to the first hoop in structure, each second hoop is formed by splicing a plurality of sections of arc-shaped sections with elasticity, and every two adjacent arc-shaped sections are connected by a buckle.
2. The pile head breaking apparatus of claim 1, wherein the first hoop is formed by splicing a plurality of resilient arcuate segments, adjacent arcuate segments being joined by a clasp.
3. The pile head breaking apparatus of claim 1, wherein the track plate is matched to the curvature of the chute.
4. The pile head breaking apparatus of claim 1, wherein the grouting mechanism comprises a storage bin and a booster pump; the storage bin comprises a solid bin for storing an expanding agent and a liquid bin for storing clear water, and the solid bin and the liquid bin are connected with the grouting head through the booster pump.
5. A pile head breaking method employing the pile head breaking apparatus of any one of claims 1-4; the method is characterized by comprising the following steps of:
step S10, sleeving a first hoop ring provided with a drilling machine on a pile head;
s20, a plurality of expansion holes are drilled along the pile head in the circumferential direction through the drilling machine;
s30, removing the punching mechanism and installing the grouting mechanism;
and S40, injecting expansion slurry into the expansion holes through a grouting mechanism.
6. The pile head breaking method according to claim 5, wherein said step S40 includes:
step S41, filling an expanding agent in a solid bin and filling clear water in a liquid bin;
step S42, simultaneously starting the discharge ports of the solid bin and the liquid bin, spraying the expanding agent from the solid bin, spraying clear water from the liquid bin, mixing the solid bin and the liquid bin to form expanded slurry, and flowing into a booster pump;
and step S43, starting the booster pump, and injecting the expansion slurry into the expansion holes.
7. The pile head breaking method according to claim 5, further comprising, after step S40:
s50, removing the grouting mechanism;
step S60, under the expansion of the expansion slurry, the upper part of the pile head is broken, and a breaking layer is formed on the plane of the expansion hole;
step S70, installing a separation mechanism, and sleeving a second hoop on the upper part of the fracture layer of the pile head;
step S80, extending the support legs through a jacking device, and jacking up the second hoop fixed with the broken pile head along the extending direction of the pile head so as to separate the broken pile head from the steel bars;
and S90, the external hoisting equipment takes over the separating mechanism to hoist the broken pile head away.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110853911.9A CN113585263B (en) | 2021-07-28 | 2021-07-28 | Pile head breaking equipment and pile head breaking method |
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| CN202110853911.9A CN113585263B (en) | 2021-07-28 | 2021-07-28 | Pile head breaking equipment and pile head breaking method |
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| Publication number | Publication date |
|---|---|
| CN113585263A (en) | 2021-11-02 |
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