CN112936614A - Machine for building underground continuous wall by penetrating through hydraulic reinforced concrete foundation - Google Patents
Machine for building underground continuous wall by penetrating through hydraulic reinforced concrete foundation Download PDFInfo
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- CN112936614A CN112936614A CN202110393252.5A CN202110393252A CN112936614A CN 112936614 A CN112936614 A CN 112936614A CN 202110393252 A CN202110393252 A CN 202110393252A CN 112936614 A CN112936614 A CN 112936614A
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 75
- 230000000149 penetrating effect Effects 0.000 title description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000012806 monitoring device Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 39
- 239000011435 rock Substances 0.000 claims description 39
- 238000000605 extraction Methods 0.000 claims description 36
- 239000002893 slag Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002356 single layer Substances 0.000 claims description 18
- 239000004567 concrete Substances 0.000 claims description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 13
- 241001330002 Bambuseae Species 0.000 claims description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 13
- 239000011425 bamboo Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 241000282472 Canis lupus familiaris Species 0.000 claims 2
- 238000000034 method Methods 0.000 description 22
- 238000005553 drilling Methods 0.000 description 20
- 238000003801 milling Methods 0.000 description 19
- 238000010276 construction Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 230000005641 tunneling Effects 0.000 description 8
- 230000002262 irrigation Effects 0.000 description 6
- 238000003973 irrigation Methods 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000003116 impacting effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000003818 cinder Substances 0.000 description 3
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- 208000002697 Tooth Abrasion Diseases 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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Abstract
The invention discloses a machine for building an underground diaphragm wall by passing through a hydraulic reinforced concrete foundation, which comprises a traveling device with a hoisting device and a power system, a monitoring device, the hoisting device, a vertical guide frame which is lifted and lowered by a steel wire rope hoist or a rigid track lifting device, and a deviation correcting device, wherein a gear transmission box is arranged on the vertical guide frame to drive a group of rotary drill rods; the rotary milling-impacting device comprises a group of hollow cylindrical drills which are meshed or tangent in parallel; the bottom of the cylinder wall of the hollow cylinder drill is L-shaped, and a toothed annular edge extends to the outer periphery, and the bottom surface of the annular edge is provided with cutter teeth; when the rotary cutting machine rotates, the toothed annular edges at the bottoms of the adjacent hollow cylindrical drills are meshed or tangent in a staggered mode, and the annular tracks of rotary impact cutting of the adjacent hollow cylindrical drills are crossed or tangent.
Description
Technical Field
The invention relates to a machine for constructing a diaphragm wall by penetrating through a reinforced concrete foundation, in particular to a rotary-impact grooving device and an extraction device for constructing an underground diaphragm wall by penetrating through a reinforced concrete foundation and a complex stratum, belonging to the field of engineering mechanical equipment.
Background
In the engineering of danger-removing, reinforcing and transforming hydraulic buildings, the problems often encountered are leakage of foundations such as sluice gates, hydropower stations or reservoir dams and the like or potential safety hazards of insufficient anti-slip stability caused by difference of water levels upstream and downstream, and the problems are solved in order to enhance the anti-seepage and anti-slip stability of the buildings, reduce the uplift pressure of the foundations and ensure the anti-seepage safety. In order to remove danger, reinforce and reform hydraulic buildings, the conventional construction method usually needs dam breaking and flow stopping at upstream and downstream, but due to the short alternate period of flood control, waterlogging drainage and drought control and irrigation, the dam breaking and flow stopping reinforcement engineering time is not allowed in many cases. Thus, it is a very troublesome problem.
In addition, as the reinforced concrete of the building foundation is grooved, because the reinforced concrete is composed of two materials with completely different properties, namely a reinforced bar and concrete, the concrete is a brittle material and is crushed in an impact mode, and the reinforced bar is a tough material and is cut by milling, particularly after the concrete is crushed, long reinforced bars are always remained and can move and wind the cutter teeth of a drilling tool to cause the drilling tool to be incapable of drilling, so that the faults are caused to the existing grooving equipment. If the construction is carried out on water, the equipment also needs to have the characteristic of light weight. In fact, a large number of hydraulic buildings with hidden troubles exist, and because dangerous reinforcement cannot be removed by adopting dam-breaking construction of upstream and downstream, the hydraulic buildings need to be rebuilt by additionally opening up an upstream and downstream approach river, the engineering quantity and the required capital are very huge, and the construction period is long.
The applicant has reported an invention patent of 'a suspension type multi-bit rotation-impact combined tunneling engineering grooving machine' (application number: 201810659443.X, publication number: CN 108560625A). the invention relates to a suspension type multi-bit rotation-impact combined tunneling engineering grooving machine which can efficiently complete grooving operations of various complex stratums including soil layers, rock layers, gravels, boulders and the like, and has good effect. The method basically realizes a tunneling grooving mechanism combining high-frequency impact and rotary milling in the grooving process, and is characterized in that narrow grooves and deep grooves can be formed, and rock strata around the groove walls are complete and low in damage, so that the method has important practical significance in basic engineering. However, the grooving machine has great difficulty in solving the problem of constructing the impermeable underground continuous wall penetrating through the foundation plate of the reinforced concrete building to the required depth.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems and the defects in the prior art, the invention further improves and innovates on the basis of the prior patent application technology, provides mechanical grooving equipment for constructing underground continuous walls by penetrating through reinforced concrete foundations and a construction process thereof, has high drilling speed and small cutter tooth abrasion, and is beneficial to overwater operation construction.
The technical scheme is as follows: the machine for building the underground continuous wall by passing through the hydraulic reinforced concrete foundation comprises a walking device with a hoisting device and a power system, a monitoring device, the hoisting device, a vertical guide frame which is lifted and lowered by a steel wire rope hoist or a rigid track lifting device, and a deviation correcting device, wherein a gear transmission box is arranged on the vertical guide frame to drive a group of rotary drill rods;
the rotary milling-impacting device comprises a group of hollow cylindrical drills which are meshed or tangent in parallel; the bottom of the cylinder wall of the hollow cylinder drill is L-shaped, and a toothed annular edge extends to the outer periphery, and the bottom surface of the annular edge is provided with cutter teeth; when the rotary cutting machine rotates, the toothed annular edges at the bottoms of the adjacent hollow cylindrical drills are meshed or tangent in a staggered mode, and the annular tracks of rotary impact cutting of the adjacent hollow cylindrical drills are crossed or tangent.
Preferably, the reinforced concrete column core extraction device is a hollow cylinder of which the bottom is provided with a fixture block which is horizontally rotated or longitudinally rotated and cut into the bottom of the column core or a hollow cylinder of which the extraction cylinder wall is provided with a sliding clamp ring;
when the reinforced concrete column core extraction device adopts horizontal rotation to cut into a clamping block, the concrete structure of the reinforced concrete column core extraction device is a double-layer sleeving barrel body of a rotating inner barrel and a fixed outer barrel, the fixed outer barrel is formed by connecting and enclosing a plurality of sections of arc plates, the fixed outer barrel is fixed with a guide frame, and the rotating inner barrel is connected with a connecting plate at the bottom of a rotary drill rod; the bottom of the fixed outer cylinder is provided with a plurality of first and second stop blocks, the bottom of the rotary inner cylinder is correspondingly provided with a rotatable fixture block, the first and second stop blocks are matched with the rotary fixture block by curved surfaces, when the bottom of the column core extraction device is lowered to reach the position below the foundation plate, the rotary inner cylinder pushes the rotary fixture block at the bottom of the rotary inner cylinder, the front end of the rotary fixture block slides along the curved surface of the stop block at the bottom of the fixed outer cylinder, so that the fixture block rotates by a certain angle and cuts into a foundation soil layer at the bottom of the column core, and the reinforced concrete;
when the reinforced concrete column core extraction device cuts into the clamping block by adopting longitudinal rotation, the concrete structure of the reinforced concrete column core extraction device comprises a single-layer cylinder body arranged below the connecting disc and a hydraulic or pneumatic piston device arranged outside the single-layer cylinder wall, a crank arm connecting rod is connected below the hydraulic or pneumatic piston device, the middle part of the crank arm connecting rod is fixed with the cylinder bottom by a rotating shaft, when the root part of the connecting rod is pushed to the lower part, the end part rotates inwards, the bottom of the reinforced concrete column core is clamped, and the column core can be lifted out of the ground by lifting the cylinder body;
the reinforced concrete column core extraction device adopts the hollow cylinder with the cylinder wall provided with the sliding snap ring to comprise a hollow cylinder body and an inclined hole obliquely and downwards formed in the cylinder wall, the sliding snap ring is installed in the inclined hole through a spring, when a hollow cylinder drill is solidified with a hard rock foundation aiming at a reinforced concrete foundation and is difficult to cut into the working condition of the foundation, the snap ring is adopted to extract the cylinder, the snap ring inclines towards the axis of the rock core pipe, when the extraction device is lifted, the snap ring is subjected to the downward friction force of the rock core and extends inwards to clamp the rock core, and the rock core is cut off by torsion and proper impact.
Preferably, the device comprises a bottom foundation rock core radial cutting device under the reinforced concrete foundation and under the condition of consolidation with a weathered stone, wherein the bottom foundation rock core radial cutting device adopts a hollow cylinder which is horizontally rotated and cut into a clamping block, the device is a double-layer cylinder body formed by sleeving an inner cylinder and an outer cylinder, the outer cylinder is connected with a connecting disc at the bottom of a rotary drill rod, a plurality of third clamping blocks and fourth clamping blocks are distributed at the bottom of the outer cylinder, a step is arranged at the lower part of the rotary drill rod, the inner cylinder is movably arranged under the rotary drill rod through a bearing arranged on the step, a plurality of rotating shafts are arranged at the bottom of the inner cylinder, rotatable clamping blocks are arranged on the rotating shafts, cutter teeth are arranged on the inner sides of the rotatable clamping blocks, and the third;
when the rotary drill rod drives the outer cylinder to rotate anticlockwise in a rotating mode, the third stop block at the bottom of the outer cylinder pushes the rotary fixture block at the bottom of the inner cylinder to rotate, and when the rotary fixture block cannot continuously rotate inwards due to the counter force of resistance of the hard rock core to rotate, the thrust of the outer cylinder acts on the rotating shaft of the rotary fixture block of the inner cylinder to push the inner cylinder to rotate synchronously, so that the rotary fixture block at the bottom of the inner cylinder rotates to press the surface of the column core and revolves around the surface of the column core; and the cutter teeth on the inner side of the rotatable fixture block press the surface of the cylindrical core to perform inward grinding and cutting, the rotatable fixture block gradually and inwardly spins along with the increase of the cutting depth, after the radial cutting reaches a certain depth, the outer cylinder is controlled to rotate clockwise by combining with the torsional fracture core, the rotatable fixture block of the inner cylinder is rotated and reset by using the fourth stop block, and the double cylinders of the foundation core cutting device are taken out.
The corresponding single-hole extraction device is explained, when a rotary drill rod of the foundation core radial cutting device at the bottom of the column core rotates to drive the outer cylinder to rotate anticlockwise, a third stop block at the bottom of the outer cylinder pushes a rotary fixture block at the bottom of the inner cylinder to rotate, when the rotary fixture block cannot continuously rotate inwards due to the counter force of resistance of the rotary fixture block against rotation of the hard core, the thrust of the outer cylinder acts on a rotating shaft of the rotary fixture block of the inner cylinder to push the inner cylinder to rotate synchronously, so that the rotary fixture block at the bottom of the inner cylinder rotates to press the surface of the column core and revolves around the surface of the column; the cutter teeth on the inner side of the rotatable fixture block press the surface of the cylindrical core to be ground and cut inwards, the rotatable fixture block gradually rotates inwards along with the increase of the cutting depth, the rotary fixture block rotates inwards, the rotary fixture block of the inner cylinder is rotated and reset by the fourth fixture block when the radial cutting process reaches a certain depth in combination with torsional fracture of the core, namely when the radial cutting process reaches a set depth, the outer cylinder is controlled to rotate clockwise, the double cylinders of the basic core radial cutting device are taken out, then the sliding clamp ring extraction device is lowered, the clamping cylindrical core is twisted and combined with appropriate impact to fracture the core at the bottom cutting part, and therefore the ground is lifted.
When the reinforced concrete column core extraction device adopts longitudinal rotation to cut into the clamping block, the concrete structure of the reinforced concrete column core extraction device comprises a single-layer cylinder body arranged below the connecting disc and a hydraulic or pneumatic piston device arranged on the outer side of the single-layer cylinder wall, a crank arm connecting rod is connected below the hydraulic or pneumatic piston device, the middle part of the crank arm connecting rod is fixed with the cylinder bottom through a rotating shaft, when the root part of the connecting rod is pushed to the lower part, the end part rotates inwards, the bottom of the reinforced concrete column core is clamped, and the column core can be lifted out of the ground through the lifting cylinder.
The reinforced concrete column core extraction device adopts the hollow cylinder with the cylinder wall provided with the sliding snap ring to comprise a hollow cylinder body and an inclined hole obliquely and downwards formed in the cylinder wall, the sliding snap ring is installed in the inclined hole through a spring, when a hollow cylinder drill is solidified with a hard rock foundation aiming at a reinforced concrete foundation and is difficult to cut into the working condition of the foundation, the snap ring is adopted to extract the cylinder, the snap ring inclines towards the axis of the rock core pipe, when the extraction device is lifted, the snap ring is subjected to the downward friction force of the rock core and extends inwards to clamp the rock core, and the rock core is cut off by torsion and proper impact.
Preferably, the bottom of the reinforced concrete column core extraction device is provided with a high-pressure water pipe and a nozzle, and aerated high-pressure water is injected into the bottom surface of the column core when the column core is lifted upwards.
Preferably, the impact output part of the impact device is connected or overhead on the top of each rotary drill rod through a buffer device, or the top of the grouped rotary drill rod connecting beam, the grouped rotary drill rod connecting beam is suspended below the bottom beam of the frame through a suspension device, and the ends of the connecting beams of the grouped rotary drill rods are connected through a limiting sliding device.
Preferably, the slag discharge system is a double-layer hollow cylinder slag discharge system which takes a double-layer hollow cylinder, namely, an outer sleeve is additionally arranged outside the hollow cylinder drill, and a cavity between the double-layer hollow cylinder slag discharge system and the hollow cylinder drill is taken as a slag discharge channel, or a single-layer hollow cylinder slag discharge system which takes a gap between the inner wall of the hollow cylinder drill and a column core as a slag discharge channel;
the top of an outer sleeve of the double-layer hollow cylinder is connected with the bottom of the guide frame in a sealing mode, the top of the hollow cylinder drill is connected with a rotary drill rod of the double-layer hollow cylinder drill in a sealing mode, the lower portion of the hollow cylinder drill is connected with the bottom of the outer sleeve through a rotary sealing piece, and slurry enters a cavity between the hollow cylinder drill and the wall of the outer sleeve from a cutter tooth gap at the bottom of the hollow cylinder drill and is then connected with an external fixed pipeline through a joint at the upper portion of;
or when the impact output part of the high-frequency impact device corresponds to the top of a group of hollow barrel drill rotary drill rod connecting beams, the rotary drill rod is a hollow drill rod, the slag discharge system directly enters the hollow rotary drill rod from a cavity between the hollow barrel drill and the outer sleeve wall and is connected with the slurry discharge hose through a joint at the top end of the frame;
the hollow section of thick bamboo slag discharging system of individual layer establishes bounding wall and flexible sealing member at guide frame floorbar and hollow drill section of thick bamboo top, bounding wall bottom seal installation is in the top of hollow drill section of thick bamboo, and flexible sealing member fixed mounting has the hem in the below of guide frame floorbar and the edge of flexible sealing member extends to outside below to one side, and the top of hollow drill section of thick bamboo is equipped with the row's sediment drill way, and row's slag pipe import is located row's sediment drill way top.
Preferably, a reinforcing steel bar detection sensor is arranged at the bottom of the hollow cylindrical drill.
Preferably, the bottom of the hollow cylindrical drill is provided with an electromagnet.
Preferably, the bottom of the reinforced concrete column core extraction device is provided with a high-pressure water pipe and a nozzle, and aerated high-pressure water is injected into the bottom surface of the column core when the column core is lifted upwards.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1) compared with the method for forming grooves by connecting single drilling holes, the method has the advantages that the grooves are formed by drilling a group of hollow cylinders which are meshed or tangent in parallel, the problem of continuity caused by deviation of positioning and verticality between the single holes is solved, the continuity and the anti-seepage effect of the wall body are guaranteed by drilling the guide grooves in parallel, and the grooving efficiency is greatly improved.
2) Compared with a comprehensive drill, the hollow barrel drill can greatly reduce the workload of concrete crushing of the steel bar grinder, reduce the total drilling pressure and impact milling power and lighten the equipment.
3) The parallel-meshing hollow barrel drill annular cutting realizes track staggering, so that the residual area on a rectangular section can be reduced, the barrel drill does not need to be greatly staggered in height, the structural stability can be guaranteed, and the requirement on machining precision is met.
4) Milling under reasonable drilling pressure is combined with high-frequency moderate impact, the working states of rotary milling and high-frequency impact can be adjusted according to actual conditions, and the problem of drilling and digging of a reinforced concrete structure formed by two materials with completely different properties of steel bars and concrete is effectively solved.
5) The slag discharging system adopts isolated space reverse circulation and magnet slag removal to timely remove concrete slag and steel bar fragments, so that repeated milling and grinding are avoided, the efficiency is improved, and related faults are avoided.
6) The technology and the prior patent of the applicant-a suspended multi-drill bit rotation-impact combined tunneling type engineering grooving machine, the application number is as follows: the multi-bit rotary-impact tunneling device of 201810659443.X can be matched with each other in structure, so that after the multi-bit rotary-impact tunneling device passes through a reinforced concrete foundation, a groove is formed on the foundation by the multi-bit rotary-impact tunneling device, the front process and the rear process are coordinated with each other, the components can be conveniently and rapidly replaced in time, and a slag discharging system is coordinated and unified.
7) The grooving machine can be arranged on a special movable working platform on water for operation, the special movable platform is a ship body with a hydraulic lifting support frame, when the grooving machine is operated in place, water is filled to enable the ship body to sink, and the hydraulic lifting support frame is arranged on the basis of a hydraulic building.
8) The method can implement the whole process of underground anti-seepage danger-removing reinforcement in an overwater operation mode, avoids cofferdam construction and cutoff at the upper and lower positions of a hydraulic building for danger-removing reinforcement, adapts to the alternation of flood control and irrigation periods, timely irrigates the underground anti-seepage wall in a sectional groove under the condition of ensuring the normal operation of flood discharge and irrigation of the hydraulic building, and can arrange a small movable steel plate protective cylinder at the periphery of a slotted hole of the sectional groove for implementing mud circulation of mud protective wall and slag removal, wherein the upper end of the small movable steel plate protective cylinder is higher than the water surface, and the contact part of the movable steel plate protective cylinder and the building foundation is provided with water stop. The main machine can be arranged on a working bridge or a special water working platform.
Drawings
FIG. 1 is a schematic view of the overall apparatus structure of example 1;
FIG. 2 is a schematic view showing a structure of a hollow drill and a high-frequency percussion device in a pair in accordance with example 1;
FIG. 3 is a schematic view showing the structure of the double-layer hollow cylinder slagging system in embodiment 1;
FIG. 4 is a schematic view showing the structure of the single-layer hollow cylinder slagging system in example 1;
FIG. 5 is a schematic view showing the structure of 4 horizontal rotary cut-in double-layer extracting apparatuses in example 1;
FIG. 6 is a schematic view of a one-time drilled slot-shaped structure of example 1;
FIG. 7 is a schematic view of the direction A of the horizontal rotary cut-in double layer extractor of FIG. 5;
FIG. 8 is a schematic view showing a one-to-two structure of a hollow drill and a high-frequency percussion device according to embodiment 2;
FIG. 9 is a schematic view showing the structure of the longitudinal rotary cutting single-layer cartridge extracting apparatus according to example 2;
FIG. 10 is an enlarged view showing the structure of the connecting rod of the longitudinal rotary cutting single-layer barrel extracting apparatus in embodiment 2;
FIG. 11 is a view taken along line A in FIG. 9;
FIG. 12 is a schematic view showing a structure of a single-layer retainer ring extracting apparatus according to embodiment 2;
FIG. 13 is a schematic view showing a radial cutting apparatus for a core of a foundation at the bottom of a core in example 2;
FIG. 14 is a view taken from part A of FIG. 13;
FIG. 15 is an enlarged view of a portion of FIG. 14 taken at I;
FIG. 16 is a schematic view of the structure of the double-layer hollow cylinder slagging system in embodiment 2.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example 1
As shown in fig. 1-2, the embodiment provides a grooving apparatus for constructing an impermeable underground diaphragm wall through a reinforced concrete foundation and a complex stratum of a building, which comprises a hoisting device and a traveling device and a monitoring device of a power system, wherein the traveling device and the monitoring device are arranged in the conventional apparatus, a vertical guide frame 1 which is lifted and lowered by a steel wire rope or a rigid lifting device, a rotary milling-impacting device and a columnar core extracting device are suspended at the traction end of the hoisting device, and a deviation correcting device 2, a high-frequency impacting device 3 and a slag discharging system are arranged on the vertical guide frame 1. Wherein: the deviation correcting devices are arranged at the upper part and the lower part of the vertical guide frame, and the rotary milling-impacting device is arranged below the vertical guide frame. The structure and principle of the deviation correcting device and the high-frequency impact device are basically the same as those of the prior patent application mentioned in the background art, and the details are repeated in this embodiment.
The main innovation points of the structure of the embodiment are a rotary milling mechanism of the rotary milling-impacting device and a columnar core extracting device. The columnar core extracting device can be a single set of equipment. Or the bottom of the rotary drill rod is provided with a bolt connecting disc connected with the hollow cylinder body, the bolt connecting disc can be connected with the hollow cylinder drill or connected with the cylinder body of the column core extraction device, when the cutter teeth at the bottom of the hollow cylinder drill dig to the position below the bottom surface of the reinforced concrete foundation, the guide frame is put forward, the cylinder body of the hollow cylinder drill at the bottom is replaced by the cylinder body of the matched column core extraction device, the rotary drill rod is rotated and lifted, the reinforced concrete column core 11 is taken out, and the reinforced concrete foundation penetrating process is completed. In the present embodiment, the replacement installation below the vertical guide frame will be described in detail.
As shown in fig. 3: the rotary milling mechanism comprises 4 hollow barrel drills 4 arranged in parallel, and high-frequency impact devices 3 which correspond to the positions of the hollow barrel drills one by one on a vertical frame, wherein the bottom of the barrel wall of each hollow barrel drill extends outwards in an L shape to form a toothed annular edge 4-1, the toothed annular edges at the bottom of the adjacent hollow barrel drills are meshed in a staggered mode, cutter teeth 4-2 are arranged on the bottom surfaces of the annular edges, so that annular tracks of rotary impact cutting of the adjacent hollow barrel drills are connected with each other, and impact output parts of the high-frequency impact devices are connected with or arranged at the tops of rotary drill rods of the hollow barrel drills at corresponding positions; two adjacent hollow cylindrical drills arranged in parallel are driven to rotate by the same group of hydraulic or electric reduction gearbox, and are impacted in the vertical direction by the high-frequency impact device, so that rotary milling and high-frequency impact force are transmitted to cutter teeth at the bottom end of the hollow cylindrical drill. Through the mutual connection of the annular tracks of the rotation-impact drilling and digging of the cutter teeth of the adjacent drill cylinders, the range of residual rock soil on the rectangular section can be reduced as much as possible, the adjacent hollow cylinder drill is not required to be greatly staggered in height due to the larger thickness of a reinforced concrete foundation, and the length of a rotary shaft of the cylinder drill is shortened, so that the stability, the precision and the sealing performance of structures such as transmission and the like are ensured.
The slag discharging system of the embodiment is a double-layer hollow cylinder, and a single-layer hollow cylinder can also be adopted.
As shown in fig. 3: when the double-layer hollow cylinder is adopted, the double-layer hollow cylinder comprises an outer sleeve 5 arranged outside the hollow cylinder drill, the top of the outer sleeve is in sealing connection with the bottom of the guide frame, the top of the hollow cylinder drill is in sealing connection with a rotary drill rod of the hollow cylinder drill, the lower part of the hollow cylinder drill is connected with the bottom of the outer sleeve through a rotary sealing element 6, slurry enters a cavity channel between the hollow drill cylinder and the outer sleeve wall from a bottom cutter tooth gap of the hollow drill cylinder, and a pipeline joint 12 connected with an external fixed pipeline is arranged on the side surface of the upper part of the outer sleeve. The slurry is sucked out by a slurry sand pump, filtered and returned to the tank for reverse circulation, and the cooling of the cutter teeth is also solved by slurry circulation.
As shown in fig. 4: when adopting the hollow section of thick bamboo structural style of individual layer, the hollow section of thick bamboo of individual layer is for establishing bounding wall 7 and flexible sealing member 8 at 1 floorbar of guide frame and hollow drill section of thick bamboo 4 top, and bounding wall bottom seal installation has the top of hollow drill section of thick bamboo 4, and flexible sealing member fixed mounting has the hem in the below of guide frame floorbar and the edge of flexible sealing member to outside oblique below extension, and the top of hollow drill section of thick bamboo is equipped with row cinder hole 9, and row cinder pipe import 10 is arranged in the bounding wall space and is located row cinder hole top. When the slag discharging pipe starts to work, the flexible sealing component is pressed to be sealed with the enclosing plate, the washing circulating slurry flows downwards from the outer side of the cylinder body, enters a gap between the inner side of the cylinder body and the rock core through the gap of the cutter teeth, and flows upwards and is discharged through the slag discharging pipe.
The column-shaped concrete core extracting device of the embodiment can simultaneously extract 4 cut concrete cores, and can also respectively extract single holes. In this embodiment, a 4-double-layer cylinder structure is taken as an example for explanation:
as shown in fig. 5-7, the column core extracting device of the present embodiment uses a horizontal rotation cutting fixture block, and has a specific structure of a double-layer cylinder, wherein the rotary inner cylinder and the fixed outer cylinder are sleeved, the fixed outer cylinder 14 is formed by joining and enclosing a plurality of sections of arc plates, the fixed outer cylinder is fixed with the guide frame, and the rotary inner cylinder 16 is connected with a connecting disc at the bottom of the rotary drill rod; a plurality of first stop blocks 17 and second stop blocks 18 are arranged on the bottom of the fixed outer barrel, a rotatable clamping block 19 is correspondingly arranged at the bottom of the rotary inner barrel, the first stop blocks, the second stop blocks and the rotary clamping block are matched with each other through a curved surface, when the bottom of the column core extraction device is placed below a foundation plate, the rotary inner barrel pushes the rotary clamping block at the bottom of the rotary inner barrel, the front end of the rotary clamping block slides along the curved surface of the stop block at the bottom of the fixed outer barrel, the clamping block rotates for a certain angle, the rotary inner barrel cuts into a soil layer at the bottom of.
The construction process comprises the following steps:
step one, arranging a small movable steel plate cofferdam around the section of the sectionalized grooved groove in a water operation mode; and step two, slotting and deslagging, wherein the slotting method comprises the following three different slotting methods under drilling working conditions:
when a reinforced concrete foundation of a building is drilled or the reinforced concrete foundation is fixedly connected with a soil layer or a hard rock foundation, a group of hollow barrel drills which are arranged in parallel and have bottom annular edges meshed in a staggered mode or tangent mode are adopted to cut the reinforced concrete foundation in an annular mode within a grooving range, and a plurality of columnar rock cores are left;
second, extracting the columnar core
When the soil layer is under the reinforced concrete foundation of the building, a column core extracting device with a horizontally-rotating cut-in fixture block arranged at the bottom is adopted to cut into the bottom of the foundation rock core and lift the foundation rock core out of the ground;
and thirdly, cleaning the groove wall, namely moving the radial distance of the barrel drill along the direction of the groove axis by using the parallel hollow barrel drill after the reinforced concrete core is extracted, namely, aligning a residual triangular area on the section of the groove to drill, so that the section of the groove is close to a rectangular section, thereby facilitating the groove forming construction of the foundation, and particularly leaving enough width for a guide frame of a matched multi-drill bit comprehensive drilling grooving machine to enter the foundation layer.
Fourthly, foundation grooving and underground continuous wall irrigation.
When a foundation rock stratum is drilled, replacing the parallel hollow engaging cylindrical drills with parallel comprehensive drills with corresponding sizes and arranged in a staggered mode in height to continuously drill the foundation under the foundation into a groove; after the grooving reaches the design required depth, the underground continuous wall irrigation is completed by the existing mature construction method, which is not described in detail.
Example 2
The grooving equipment for constructing the anti-seepage underground continuous wall by penetrating through the reinforced concrete foundation and the complex stratum of the building provided by the embodiment has the same basic structure and composition as those in the embodiment 1, and is different in that:
as shown in fig. 8: the rotary milling device in the embodiment comprises 4 hollow cylindrical drills arranged in parallel and two high-frequency impact devices, wherein an impact output part of one high-frequency impact device is connected with or arranged on the top of a transverse connecting beam of the rotary shaft of the adjacent 2 hollow cylindrical drills in an overhead mode. The rotary shafts of the hollow cylindrical drills arranged in parallel are driven to rotate by hydraulic pressure or electric power, and meanwhile, the rotary milling and high-frequency impact force are transmitted to the cutter teeth at the bottom end of the hollow cylindrical drill by the impact in the vertical direction transmitted by the high-frequency impact device through the transverse connecting beam. The adjacent barrel drill connection beams of the embodiment are connected by a limiting sliding device, and the limiting sliding device comprises a groove plate fixedly connected with the connection beam of the first group of barrel drill and a sliding block fixedly connected with the connection beam of the adjacent second group of barrel drill; the two are connected in a limited way in the horizontal direction, and can slide relatively in the vertical direction. The limiting sliding device is combined with a suspension device arranged below the bottom beam of the frame, and stable meshing between the drilling cutter teeth of adjacent linked beams is facilitated. And a kinematic pair which is fixed in the vertical direction and rotates in the circumferential direction is formed between the connecting beam and the hollow drill bit rotating shaft through a plane bearing. The transverse connecting beam and the bottom of the guide frame form sliding connection through a pair of suspension devices, and when vertical impact force of an impact device is applied to the transverse connecting beam, the vertical impact force is transmitted to a shoulder of a rotary drill rod of the hollow drill bit through the plane bearing and then transmitted to the hollow drill bit and the cutter teeth, so that the guide frame and equipment in the guide frame are less affected by the impact; the connection mounting structure of the connection beam in this embodiment is basically the same as that in the prior patent application, and detailed description is not given, and this embodiment only describes the detailed structure of the innovation point.
The hollow cylindrical drill is characterized in that symmetrical directional rotation states are formed between the hollow cylindrical drill and the parallel hollow cylindrical drill in the rotation motion so as to balance milling counter force and be beneficial to the cutter teeth to take proper angles to improve cutting efficiency, reinforcing steel bar detection sensors are arranged on the circumference of the bottom of the hollow cylindrical drill, the density of reinforcing steel bars is known in a drilling process in due time, and the drilling pressure, the rotating speed, the impact force and the impact frequency are adjusted in due time according to the conditions of a dense layer and different layers without or with few reinforcing steel bars. When residual broken steel bars which are not easy to be sucked out by mud exist at the bottom of the parallel hollow cylindrical drill in the process of forming the groove on the reinforced concrete structure, the broken steel bars are adsorbed and lifted out of the ground in time by utilizing an electromagnet arranged at the bottom of the hollow cylindrical drill. Repeated milling is avoided, and drilling efficiency is improved.
As shown in fig. 9-11: the columnar core extracting device adopting the mode of longitudinally rotating to cut into the clamping block is of at least 1 single-layer extracting barrel structure: the single-layer extraction cylinder comprises a single-layer cylinder body 31 arranged below the connecting disc and a plurality of hydraulic or pneumatic piston devices 33 arranged on the outer circumferential direction of the single-layer cylinder wall, a crank arm connecting rod is movably connected below a piston of the hydraulic or pneumatic piston device, the other end of the crank arm connecting rod 32 is fixedly connected with a rotating shaft arranged on the single-layer cylinder wall to form a rotating pair, and a lifting stop block 34 is fixedly arranged on the rotating shaft. When the piston of the hydraulic or pneumatic piston device drives the connecting rod to the lower part, the root end of the connecting rod rotates inwards, the lifting stop block is clamped at the bottom of the reinforced concrete column core, and the reinforced concrete column core is lifted out of the ground.
The scheme can consider the combined use of air-entraining high-pressure jet flow to impact the bottom of the core; namely, the proper position of the bottom of the cylinder body can be provided with a high-pressure water pipe 35 and a nozzle, aerated high-pressure water is injected into the bottom surface of the column core, and the vacuum suction force between the foundation plate and the foundation is overcome, so that the lifting of the extraction device is facilitated.
As shown in fig. 12, for the working condition that the reinforced concrete foundation is consolidated with the hard rock foundation and is difficult to cut into the foundation, a hollow cylinder with a sliding clamp ring arranged on the cylinder wall is adopted, the hollow cylinder comprises a hollow cylinder body 36 and an inclined hole 37 obliquely arranged on the cylinder wall at the axis in the lower direction, a sliding clamp ring 38 is arranged in the inclined hole through a spring, when the extraction device is lifted, the clamp ring is subjected to the downward friction force of the rock core to extend inwards to clamp the rock core, and the rock core is cut off by combining proper impact in a torsion mode.
As shown in fig. 13-15: aiming at the condition that the lower part of a reinforced concrete foundation is consolidated with weathered rocks, a rotary clamping block cannot be directly cut into the rocks, and a cutting process is firstly carried out, the foundation and rock core radial cutting device further comprises a bottom foundation and rock core radial cutting device, the foundation and rock core radial cutting device adopts a horizontal rotation to cut into a hollow cylinder of the clamping block, the foundation and rock core radial cutting device is structurally a double-layer cylinder body formed by sleeving an inner cylinder 16 ' and an outer cylinder 14 ', the outer cylinder 14 ' is connected with a connecting disc at the bottom of a rotary drill rod, a plurality of third stop blocks 17 ' and fourth stop blocks 18 ' are distributed at the bottom of the outer cylinder, the lower part of the rotary drill rod is provided with a step, the inner cylinder is movably arranged below the rotary drill rod through a bearing. The hollow drill rod is also used as a reverse circulation slag discharge channel, the bottom of the inner cylinder is provided with a plurality of rotating shafts, the rotating shafts are provided with rotatable fixture blocks 19', the inner sides of the rotatable fixture blocks are provided with cutter teeth 15, and the third and fourth fixture blocks are matched with the rotating fixture blocks by curved surfaces; when the rotary drill rod shaft rotates to drive the outer cylinder to rotate anticlockwise, the third stop block 17' at the bottom of the outer cylinder pushes the rotary fixture block at the bottom of the inner cylinder to rotate, when the rotary fixture block cannot continuously rotate inwards due to the counter force of the resistance of the rotary fixture block to rotate, the thrust of the outer cylinder acts on the rotary shaft of the rotary fixture block of the inner cylinder to push the inner cylinder to synchronously rotate, so that the rotary fixture block at the bottom of the inner cylinder rotates to press the surface of the column core and revolves around the surface of the column core, the cutter teeth at the inner side of the rotary fixture block press the surface of the column core to grind and cut inwards, the rotary fixture block rotates inwards gradually with the increase of the cutting depth, the radial cutting is combined with the process of twisting and breaking the core after reaching a certain depth, namely when the radial cutting process reaches the set depth, the outer cylinder is controlled to rotate clockwise, the rotary fixture block of, the clamping column core twist combined with moderate impact breaks the core at the bottom cut, lifting the ground.
For the scheme of extracting four column cores and multiple cylinders at one time, because the inner cylinder and the outer cylinder rotate simultaneously, if two adjacent outer cylinders are staggered, the bottom stop blocks of the two adjacent cylinders and the rotating fixture block cannot pass through, the diameters of the adjacent cylinders are required to be not staggered, therefore, the thickness of a cutting ring of a meshed hollow cylinder drill in a drilling and digging process can be relatively enlarged, the diameter of the reserved column core is smaller, the diameter of the cylinder of the column core extracting device is properly reduced, and the adjacent cylinders do not intersect and rotate independently.
As shown in fig. 16: the basic structure of the slag discharging system of the embodiment is the same as that of the double-layer hollow cylinder in the embodiment 1, and the difference is that in the embodiment, the impact device does not directly impact the top of the rotary drill rod of each hollow cylinder drill, so that the rotary drill rod can be made into a hollow drill rod, the hollow drill rod is used as a slag discharging channel, and a group of through holes 13 are formed in the shaft wall of the hollow drill rod; a cavity is arranged between the hollow barrel drill and the outer sleeve, the lower part of the hollow barrel drill is connected with the bottom of the outer sleeve through a rotary sealing piece, slurry enters a cavity channel between the hollow drill barrel and the outer sleeve wall from a clearance between bottom cutter teeth of the hollow drill barrel, converges into the hollow drill rod through the through hole and then enters into a slag suction pipeline, a rotary sealing joint 39 is arranged between the top of each hollow rotary drill rod and a fixed slag discharge pipe on the upper part of the frame, and then the fixed joint converged into the top end of the frame is connected with a slurry discharge hose and sucked out by sand and stone. The hollow barrel drilling, milling and high-frequency impacting grooving device arranged in parallel avoids full groove section milling, impacting and crushing, adopts staggered or tangent annular tracks to cut the basic reinforced concrete into a plurality of cylinders to be taken out, not only avoids the problem of steel bar winding, greatly reduces the workload of milling and crushing, improves the drilling speed, and further reduces the cutter tooth abrasion in a rotary milling-high-frequency impacting mode. The equipment and the construction process have the outstanding advantages that the damage to reinforced concrete around a hydraulic structure can be favorably ensured in the construction process, the whole process can be completed through overwater operation, the damming and flow-breaking are not needed, the huge amount of engineering for upstream and downstream damming and flow-breaking can be saved, the construction period is greatly shortened, meanwhile, the construction process is not influenced by flood and drought periods, and flood control and irrigation are not influenced by construction operation.
In the existing engineering mechanical equipment, the working mode of the double-wheel milling is to mill the full-groove section, the required torsion power is large, the equipment weight is also large, and the cutter teeth of the milling wheel are sensitive to the stratum with the steel bars and are not suitable for the tunneling of the reinforced concrete. The grooving equipment for the reinforced concrete foundation slab penetrating through the hydraulic structure adopts a group of parallel meshed or tangent hollow cylindrical drills, cutter teeth are arranged at the bottom of the cylindrical wall, and the adjacent hollow cylindrical drills are circularly connected in a rotary cutting mode so as to reduce the range of residual uncovered areas on the rectangular section. Through the meshing of hollow barrel bores side by side, and need not to bore the crisscross of adjacent annular orbit of great amplitude height with adjacent barrel, more importantly has shortened barrel bore rotary shaft length from this greatly to can guarantee the stability of transmission isotructure, precision, and sealing performance. After the annular cutting is finished, taking out the reinforced concrete column core by using the column core extraction device, moving the guide frame along the axis of the groove by the radius distance of the drill cylinder, aligning the guide frame with the residual area on the section, cleaning the residual area, forming a groove which is approximately rectangular on the reinforced concrete foundation, keeping the peripheral reinforced concrete intact, and continuously forming the groove on the foundation and pouring the reinforced concrete underground anti-seepage continuous wall after penetrating through the reinforced concrete building foundation. According to the needs of danger-eliminating reinforcing engineering, the reinforced concrete continuous wall can also be used as a basic bearing structure, and the building can be further comprehensively reformed according to the water regime change and the water resource scheduling.
The hollow cylinder drill is annularly cut, the width is very small (public grade), the winding of longer steel bars on parts such as cutter teeth and the like in large-area broken concrete is avoided, the workload of milling and cutting and the abrasion of the cutter teeth are greatly reduced, equipment is light, and water operation is convenient to take.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (8)
1. The machine for building the underground continuous wall by passing through the hydraulic reinforced concrete foundation comprises a walking device with a hoisting device and a power system, a monitoring device, the hoisting device, a vertical guide frame which is lifted and lowered by a steel wire rope hoist or a rigid track lifting device, and a deviation correcting device, wherein a gear transmission box is arranged on the vertical guide frame to drive a group of rotary drill rods;
the rotary milling-impacting device comprises a group of hollow cylindrical drills which are meshed or tangent in parallel; the bottom of the cylinder wall of the hollow cylinder drill is L-shaped, and a toothed annular edge extends to the outer periphery, and the bottom surface of the annular edge is provided with cutter teeth; when the rotary cutting machine rotates, the toothed annular edges at the bottoms of the adjacent hollow cylindrical drills are meshed or tangent in a staggered mode, and the annular tracks of rotary impact cutting of the adjacent hollow cylindrical drills are crossed or tangent.
2. The machine for constructing an underground diaphragm wall through a hydraulic reinforced concrete foundation according to claim 1, wherein the reinforced concrete column core extraction device is a hollow cylinder provided with a fixture block at the bottom, which is horizontally or longitudinally rotated and cut into the bottom of the column core, or a hollow cylinder provided with a sliding clamp ring at the extraction cylinder wall;
when the reinforced concrete column core extraction device adopts horizontal rotation to cut into a clamping block, the concrete structure of the reinforced concrete column core extraction device is a double-layer sleeving barrel body of a rotating inner barrel and a fixed outer barrel, the fixed outer barrel is formed by connecting and enclosing a plurality of sections of arc plates, the fixed outer barrel is fixed with a guide frame, and the rotating inner barrel is connected with a connecting plate at the bottom of a rotary drill rod; the bottom of the fixed outer cylinder is provided with a plurality of first and second stop blocks, the bottom of the rotary inner cylinder is correspondingly provided with a rotatable fixture block, the first and second stop blocks are matched with the rotary fixture block by curved surfaces, when the bottom of the column core extraction device is lowered to reach the position below the foundation plate, the rotary inner cylinder pushes the rotary fixture block at the bottom of the rotary inner cylinder, the front end of the rotary fixture block slides along the curved surface of the stop block at the bottom of the fixed outer cylinder, so that the fixture block rotates by a certain angle and cuts into a foundation soil layer at the bottom of the column core, and the reinforced concrete;
when the reinforced concrete column core extraction device cuts into the clamping block by adopting longitudinal rotation, the concrete structure of the reinforced concrete column core extraction device comprises a single-layer cylinder body arranged below the connecting disc and a hydraulic or pneumatic piston device arranged outside the single-layer cylinder wall, a crank arm connecting rod is connected below the hydraulic or pneumatic piston device, the middle part of the crank arm connecting rod is fixed with the cylinder bottom by a rotating shaft, when the root part of the connecting rod is pushed to the lower part, the end part rotates inwards, the bottom of the reinforced concrete column core is clamped, and the column core can be lifted out of the ground by lifting the cylinder body;
when the reinforced concrete column core extraction device adopts the hollow cylinder with the cylinder wall provided with the sliding clamping ring, the concrete structure of the reinforced concrete column core extraction device comprises a hollow cylinder body and an inclined hole which is obliquely and downwards formed in the cylinder wall, the sliding clamping ring is installed in the inclined hole through a spring, the reinforced concrete foundation is solidified with a hard rock foundation, the working condition of the foundation is difficult to cut in, when the extraction device is lifted, the clamping ring is subjected to the downward friction force of the rock core and inwards extends to clamp the rock core, and the foundation rock core is cut off through proper impact in the torsion combination.
3. The machine for constructing an underground diaphragm wall through a hydraulic reinforced concrete foundation according to claim 2, it is characterized in that aiming at the condition that the lower part of the reinforced concrete foundation is consolidated with weathered rocks, the device also comprises a bottom foundation rock core radial cutting device which adopts horizontal rotation to cut into a hollow cylinder of a fixture block, the concrete structure of the drill rod is a double-layer cylinder body formed by sleeving an inner cylinder and an outer cylinder, the outer cylinder is connected with a connecting disc at the bottom of a rotary drill rod, a plurality of third stop dogs and fourth stop dogs are distributed at the bottom of the outer cylinder, the lower part of the rotary drill rod is provided with a step, the inner cylinder is movably arranged below the rotary drill rod through a bearing arranged on the step, the bottom of the inner cylinder is provided with a plurality of rotating shafts, the rotating shafts are provided with rotatable clamping blocks, the inner sides of the rotatable clamping blocks are provided with cutter teeth, and the third and fourth clamping blocks are matched with the rotatable clamping blocks through curved surfaces;
when the rotary drill rod drives the outer cylinder to rotate anticlockwise in a rotating mode, the third stop block at the bottom of the outer cylinder pushes the rotary fixture block at the bottom of the inner cylinder to rotate, and when the rotary fixture block cannot continuously rotate inwards due to the counter force of resistance of the hard rock core to rotate, the thrust of the outer cylinder acts on the rotating shaft of the rotary fixture block of the inner cylinder to push the inner cylinder to rotate synchronously, so that the rotary fixture block at the bottom of the inner cylinder rotates to press the surface of the column core and revolves around the surface of the column core; and the cutter teeth on the inner side of the rotatable fixture block press the surface of the cylindrical core to perform inward grinding and cutting, the rotatable fixture block gradually and inwardly spins along with the increase of the cutting depth, after the radial cutting reaches a certain depth, the outer cylinder is controlled to rotate clockwise by combining with the torsional fracture core, the rotatable fixture block of the inner cylinder is rotated and reset by using the fourth stop block, and the double cylinders of the foundation core cutting device are taken out.
4. The machine for constructing an underground continuous wall through a hydraulic reinforced concrete foundation according to claim 3, wherein the bottom of the reinforced concrete column core extraction device is provided with a high-pressure water pipe and a nozzle, and aerated high-pressure water is injected into the bottom surface of the column core when the column core is lifted upwards.
5. The machine for constructing underground continuous walls through hydraulic reinforced concrete foundations as claimed in claim 4, wherein the impact output part of the impact device is connected or overhead-mounted on the top of each rotary drill rod through a buffer device, or on the top of the grouped rotary drill rod connection beams, the grouped rotary drill rod connection beams are suspended below the bottom beams of the frame through suspension devices, and the end heads of the connected cross beams of the grouped rotary drill rods are connected through limit sliding devices.
6. The machine for constructing an underground diaphragm wall through a hydraulic reinforced concrete foundation according to claim 5, wherein the deslagging system is a double-layer barrel deslagging system which takes a double-layer hollow barrel, namely an outer sleeve is additionally arranged outside the hollow barrel drill, and a cavity between the double-layer barrel deslagging system and the hollow barrel drill is taken as a deslagging channel, or a single-layer hollow barrel deslagging system which takes a gap between the inner wall of the hollow barrel drill and a column core as a deslagging channel;
the top of an outer sleeve of the double-layer hollow cylinder is connected with the bottom of the guide frame in a sealing mode, the top of the hollow cylinder drill is connected with a rotary drill rod of the double-layer hollow cylinder drill in a sealing mode, the lower portion of the hollow cylinder drill is connected with the bottom of the outer sleeve through a rotary sealing piece, and slurry enters a cavity between the hollow cylinder drill and the wall of the outer sleeve from a cutter tooth gap at the bottom of the hollow cylinder drill and is then connected with an external fixed pipeline through a joint at the upper portion of;
or when the impact output part of the high-frequency impact device corresponds to the top of a group of hollow barrel drill rotary drill rod connecting beams, the rotary drill rod is a hollow drill rod, the slag discharge system directly enters the hollow rotary drill rod from a cavity between the hollow barrel drill and the outer sleeve wall and is connected with the slurry discharge hose through a joint at the top end of the frame;
the hollow section of thick bamboo slag discharging system of individual layer is for establishing bounding wall and flexible sealing member at guide frame floorbar and hollow drill section of thick bamboo top, bounding wall bottom seal installation is in the top of hollow drill section of thick bamboo, and flexible sealing member fixed mounting has the hem in the below of guide frame floorbar and the edge of flexible sealing member extends to outside below to one side, and the top of hollow drill section of thick bamboo is equipped with the row's slag hole mouth, and the row's of slag pipe import is located row's slag hole mouth top.
7. The machine for constructing an underground diaphragm wall through a hydraulic reinforced concrete foundation according to claim 1, wherein a steel bar detection sensor is arranged at the bottom of the hollow cylinder drill.
8. The machine for constructing an underground diaphragm wall through a hydraulic reinforced concrete foundation according to claim 1, wherein the bottom of the hollow barrel drill is provided with an electromagnet.
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Cited By (1)
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| CN114352185A (en) * | 2021-12-13 | 2022-04-15 | 广东君豪高科地下空间建设有限公司 | Variable speed drill bit for underground space development field |
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