CN112227375A

CN112227375A - Cast-in-situ bored pile grouting device and construction method thereof

Info

Publication number: CN112227375A
Application number: CN202010975084.6A
Authority: CN
Inventors: 李伟; 杨红法; 钟曙光; 孙万军; 郑青青
Original assignee: Feifan Group Co ltd
Current assignee: Feifan Group Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-01-15
Anticipated expiration: 2040-09-16
Also published as: CN112227375B

Abstract

The application relates to a cast-in-situ bored pile grouting device and a construction method thereof, and the cast-in-situ bored pile grouting device comprises a rack arranged at an orifice of a foundation pile, two sliding seats which are symmetrically and radially slid along the orifice on the rack, guide rollers which are rotatably arranged on the side walls of the sliding seats close to the orifice, and a driving device which is used for driving the two sliding seats to synchronously and reversely slide; still include the overlap joint ear of rigid coupling on the outer wall of pipeline section both ends, it is provided with the overlap joint platform to go up and down along vertical direction on the sliding seat, is provided with the elevating gear who is used for ordering about the reciprocal lift of overlap joint platform on the sliding seat. When pouring concrete, insert the drill way with the pipeline section that splices well in, order about two sliding seats and be close to in step to grasp the slip casting pipe, the guide roll plays the direction and corrects the effect to the slip casting pipe, then, makes the overlap joint ear overlap joint on the slip casting pipe on the overlap joint platform, orders about the reciprocal oscilaltion of overlap joint platform again, and it is smooth and easy to ensure that the slip casting is intraductal concrete flows, and this application has the effect that improves the foundation pile quality, and the manpower is saved.

Description

Cast-in-situ bored pile grouting device and construction method thereof

Technical Field

The application relates to the field of foundation pile construction engineering, in particular to a cast-in-situ bored pile grouting device and a construction method thereof.

Background

The cast-in-situ bored pile is a pile formed by forming a pile hole in foundation soil through mechanical drilling, steel pipe soil extrusion or manual excavation and the like on an engineering site, placing a reinforcement cage in the pile hole and pouring concrete into the pile hole. Compared with the hammering method of sinking into the pile, the construction noise and vibration are much smaller, the pile with a diameter larger than that of the precast pile can be built, and the method can be used on various foundations.

Patent with grant publication number CN207775893U discloses a drilling bored concrete pile foundation subsection slip casting pipe, including: the pipe comprises a plurality of pipe sections which are connected in a splicing mode, wherein a joint is sleeved on the pipe section positioned at the lower part of the two adjacent pipe sections, and a partition plate for plugging an opening of the pipe section is fixedly arranged in the joint. The protective cover can be removed for grouting during construction. A plurality of pipe sections are butted to form a plurality of sections of pipe sections, and the partition plate is detached during grouting to ensure the smoothness of the inside of the grouting pipe.

With respect to the related art among the above, there are the following drawbacks: during grouting, a constructor generally needs to lift the grouting pipe up and down, so that concrete blockage in the grouting pipe is avoided, and the guide pipe is easy to touch and hang the reinforcement cage during lifting, so that the forming quality of the foundation pile is affected.

Disclosure of Invention

In order to improve the forming quality of foundation piles, the application provides a cast-in-situ bored pile grouting device and a construction method thereof.

In a first aspect, the application provides a bored pile grouting device, which adopts the following technical scheme:

a cast-in-situ bored pile grouting device comprises a rack arranged at an orifice of a foundation pile, wherein two sliding seats are symmetrically arranged on the rack in a sliding manner along the radial direction of the orifice, the two sliding seats are respectively positioned at two sides of the orifice, guide rollers are rotatably arranged on the side walls, close to the orifice, of the sliding seats, the axis of each guide roller is perpendicular to the axis of the orifice, at least two groups of guide rollers are arranged at intervals along the vertical direction, and a driving device for driving the two sliding seats to synchronously and reversely slide is arranged on the rack;

still include the overlap joint ear of rigid coupling on the outer wall of pipeline section both ends, it is provided with the overlap joint platform that supplies the overlap joint ear overlap joint to go up and down along vertical direction on the sliding seat, be provided with the elevating gear who is used for ordering about the reciprocal lift of overlap joint platform on the sliding seat.

Through adopting above-mentioned technical scheme, when the concreting, the pipeline section that will splice is inserted in the drill way, then, start drive arrangement, order about two sliding seat and be close to in step, and grasp the slip casting pipe, through the guide roll on the sliding seat, play direction and corrective action to the slip casting pipe, then, transfer the slip casting pipe, make the overlap joint ear overlap joint on the slip casting pipe at the overlap joint bench, restart elevating gear, order about the reciprocal oscilaltion of overlap joint bench, thereby drive the slip casting pipe and remove in the drill way, it is smooth and easy to ensure that the concrete flows among the slip casting pipe, it is vertical to keep the slip casting pipe to remove the in-process direction simultaneously, effectively prevent the contact of bar cage in slip casting pipe and the drill way, improve foundation pile quality, and save the manpower.

Optionally, drive arrangement includes two-way lead screw, first motor and two screw thread sleeves, two-way lead screw sets up in the frame along sliding seat slip direction, the both ends of two-way lead screw all rotate with the mounting bracket and are connected, two the screw thread sleeve is respectively the screw thread cup joint on two-way lead screw revolve to opposite screw thread on, two the screw thread sleeve respectively with two sliding seat fixed connection, first motor sets firmly in the frame, the output shaft of first motor and the coaxial fixed connection of one end of two-way lead screw.

Through adopting above-mentioned technical scheme, after starting first motor, drive two-way lead screw and rotate, two threaded sleeve on the two-way lead screw are close to each other or keep away from each other under the screw thread transmission effect to make two sliding seats be close to or keep away from in step, and then with the slip casting pipe centre gripping, the centre gripping is stable, and work efficiency is high.

Optionally, elevating gear includes dwang and second motor, the second motor rigid coupling is on the sliding seat, the one end of dwang and the output shaft fixed connection of second motor, the length direction of dwang and the output shaft axial direction of second motor are perpendicular, the output shaft of second motor is located the outside of overlap joint platform projection range on the horizontal plane, the one end that the second motor was kept away from to the dwang can contact on the diapire of overlap joint platform.

Through adopting above-mentioned technical scheme, after starting the second motor, the second motor drives the dwang and rotates, and the expansion end of dwang is upwards rotated from below direction overlap joint platform one side, rotates the in-process, dwang and overlap joint platform bottom wall contact to lift up the overlap joint platform slowly, after the dwang rotated from the overlap joint platform below, overlap joint platform free fall, thereby realize that overlap joint bench lapped slip casting pipe carries the piece slowly and puts, effectively prevent that the concrete from blockking up in the slip casting pipe.

Optionally, one end of the rotating rod, which is far away from the second motor, is rotatably provided with a roller, and the rotating axis of the roller is parallel to the axis of the output shaft of the second motor.

Through adopting above-mentioned technical scheme, when the dwang rotated to the overlap joint platform, the gyro wheel contacted with the overlap joint platform diapire, reduced frictional force between dwang and the overlap joint platform to effectively reduce the wearing and tearing of dwang, and rotate the smoothness.

Optionally, a damping piece is arranged on the sliding seat and is located right below the lapping table.

Through adopting above-mentioned technical scheme, set up the damping piece in overlap joint platform below, when the overlap joint platform free fall from the dwang, the damping piece can strike the whereabouts of overlap joint platform and play the cushioning effect, effectively reduces noise on the building site to can play the guard action to the overlap joint platform.

Optionally, a pressing plate used for limiting the ascending of the lapping lug on the lapping table is arranged on the lapping table in a radial sliding mode along the orifice, a strip-shaped hole is formed in the lapping table along the sliding direction of the pressing plate, a connecting rod is fixedly arranged on the bottom wall of the pressing plate and penetrates through the strip-shaped hole in a sliding mode along the length direction of the strip-shaped hole, a first elastic piece used for driving the pressing plate to be close to the orifice is arranged on the lapping table, an ejector rod with the top end extending out of the top wall of the lapping table is arranged on the lapping table in a sliding mode along the vertical direction, the ejector rod is located in the projection range of the lapping lug on the lapping table, a butting rod used for butting the connecting rod is fixedly connected to the side wall, close to the connecting rod, of the ejector rod, the pressing plate is located outside the projection range of the lapping lug on the lapping table when the butting rod is abutted, the top end of the ejector rod is parallel to the lap joint table, and the abutting rod is downwards separated from the connecting rod.

Through adopting above-mentioned technical scheme, when constructor with the overlap joint ear overlap joint on the slip casting pipe when the overlap joint bench, the overlap joint ear is pressed on the ejector pin, overcome second elastic component elasticity, make the top of ejector pin descend to flush with the overlap joint bench roof under the overlap joint bench, the butt joint pole on the ejector pin breaks away from the connecting rod simultaneously, under the effect of first elastic component, connecting rod and clamp plate slide to the slip casting pipe and are close to, the clamp plate keeps off in the top of overlap joint ear to fix the slip casting pipe.

Optionally, the slip direction of clamp plate is parallel with sliding seat slip direction, the overlap joint bench slides along clamp plate slip direction and is provided with the slider, the ejector pin sets up on the slider, the overlap joint bench is provided with the third elastic component that is used for ordering about the slider and keeps away from the drill way, the stiffness coefficient of third elastic component is greater than the stiffness coefficient of first elastic component, the shelves pole has set firmly in the frame, the shelves pole is used for keeping away from the one end contact in drill way with the slider when the drill way is kept away from in the sliding seat slip.

Through adopting above-mentioned technical scheme, when slip seat slides and keeps away from the slip casting pipe, the overlap joint ear is taken out from between clamp plate and the overlap joint platform, and when slip seat continues to keep away from the slip casting pipe, shelves pole and slider in the frame, and promote the slider and overcome third elastic component elasticity and be close to the drill way, stagger back when butt joint pole and connecting rod, the second elastic component drives ejector pin and butt pole and rises, when the slip seat slides once more and is close to the drill way, third elastic component drives slider and butt pole and is close to the connecting rod, and through butt pole butt joint connecting rod, overcome first elastic component elasticity, drive connecting rod and clamp plate and reset, save artifical reset clamp plate position, high durability and convenient use.

Optionally, a water tank is arranged on the rack, a spray head is arranged on the sliding seat, a water outlet port of the spray head faces the pipeline, a water inlet port of the spray head is connected with a water pipe, the other end of the water pipe is communicated with the water tank, a water pump is arranged on the water pipe, and a water inlet port of the water pump faces the water tank.

Through adopting above-mentioned technical scheme, when constructor promoted the slip casting pipe, start the water pump, take out water tank normal water through the water pump and to the shower nozzle, again by the shower nozzle to slip casting pipe outer wall water spray wash away, make the slip casting pipe surface clean, the convenience is retrieved the recycle to the slip casting pipe.

In a second aspect, the present application provides a cast-in-situ bored pile construction method, which adopts the following technical scheme:

a cast-in-situ bored pile construction method comprises the following steps:

(1) measuring and positioning, and positioning the pile machine: arranging a construction site, arranging the construction site, measuring and lofting a pile position, and embedding a steel casing;

(2) pile hole forming: drilling on the ground, supplementing by using slurry in the drilling process, and cleaning the hole after the drilling depth meets the design requirement;

(3) installing a reinforcement cage: installing a reinforcement cage on the ground, and after the reinforcement cage is manufactured, hanging the reinforcement cage into a pile opening;

(4) concrete pouring: splicing the pipe sections on the ground to form a grouting pipe, hanging the grouting pipe into a pile opening, pouring the grouting pipe by adopting a large hopper and isolation ball method in the first pouring process, lifting the grouting pipe up and down in the upward pouring process, slowly lifting the grouting pipe and quickly placing the grouting pipe, wherein the lifting speed is not more than 300mm, and lifting and dismounting the grouting pipe timely along with the rising of concrete.

Through adopting above-mentioned technical scheme, constantly lifting the slip casting pipe from top to bottom when pouring the concrete, make the concrete in the slip casting pipe vibrate in the slip casting pipe to effectively prevent that the concrete from piling up in slip casting pipe mouth of pipe department and blockking up and appearing the air separation layer in the concrete, improve foundation pile filling quality.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when concrete is poured, the spliced pipe sections are inserted into the orifices, the two sliding seats are driven to be synchronously close to each other and clamp the grouting pipes, the guide rollers play a role in guiding and correcting the grouting pipes, then, the lap joint lugs on the grouting pipes are lapped on the lap joint table, and then the lap joint table is driven to reciprocate to lift up and down, so that the smooth flowing of the concrete in the grouting pipes is ensured, the quality of foundation piles is improved, and the labor is saved;

2. when a constructor lifts the grouting pipe, a water pump is started, water in the water tank is pumped to the spray head through the water pump, and then the spray head sprays water to wash the outer wall of the grouting pipe, so that the surface of the grouting pipe is clean, and the grouting pipe is convenient to recycle;

3. the grouting pipe is continuously lifted up and down when concrete is poured, so that the concrete in the grouting pipe vibrates in the grouting pipe, the concrete is effectively prevented from being accumulated at the pipe opening of the grouting pipe and blocking, an air separation layer appears in the concrete, and the pouring quality of the foundation pile is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic overall structure diagram of another view angle according to the embodiment of the present application.

Fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.

Fig. 5 is a partially enlarged schematic view of a portion C in fig. 3.

Description of reference numerals: 1. an orifice; 11. lapping lugs; 2. a frame; 3. a sliding seat; 31. a guide roller; 32. a shock absorbing member; 4. a drive device; 41. a bidirectional screw rod; 42. a first motor; 43. a threaded sleeve; 5. a lapping table; 6. a lifting device; 61. rotating the rod; 62. a second motor; 63. a roller; 7. pressing a plate; 71. a strip-shaped hole; 72. a connecting rod; 73. a first elastic member; 8. a top rod; 81. a butting rod; 82. a second elastic member; 83. a slider; 84. a third elastic member; 85. a gear lever; 9. a spray head; 91. a water tank; 92. a water pipe; 93. and (4) a water pump.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses drilling bored concrete pile slip casting device. Referring to fig. 1, including frame 2 and two sliding seat 3, frame 2 places subaerial at foundation pile drill way 1 position, and frame 2 middle part is fretwork, and foundation pile drill way 1 aligns frame 2 middle part fretwork position. On the roof of frame 2, be located 2 length direction's of frame both sides border bolt fixed mounting respectively and have the guide rail, two sliding seat 3 equal slidable mounting are on the guide rail. The two sliding seats 3 are respectively positioned on two sides of the hole opening 1 of the foundation pile on the frame 2, and the sliding directions of the two sliding seats 3 are positioned on a straight line and symmetrically move in opposite directions on two sides of the hole opening 1.

Referring to fig. 1, in order to drive the two sliding seats 3 to synchronously and reversely slide, a driving device 4 for driving the two sliding seats 3 to synchronously and reversely slide is disposed on the frame 2, and the driving device 4 in this embodiment includes a bidirectional screw rod 41, a first motor 42 and two threaded sleeves 43. The bidirectional screw rod 41 is arranged on the frame 2 in parallel with the sliding direction of the sliding seat 3, two ends of the bidirectional screw rod 41 are respectively connected with the mounting frame in a rotating way, and the bidirectional screw rod 41 is positioned on one side of the foundation pile hole opening 1. The first motor 42 is fixedly mounted on the frame 2 by bolts, and an output shaft of the first motor 42 is coaxially and fixedly connected with one end of the bidirectional screw rod 41 by a coupler. Two threaded sleeves 43 are respectively welded and fixed on the bottom walls of the two sliding seats 3, and both the two bolt sleeves are sleeved on the two-way screw rod 41 in a threaded manner and are respectively positioned on two sections of threads in opposite rotating directions on the two-way screw rod 41.

In other embodiments, the driving device 4 may be two air cylinders. Through two cylinder bolt fixed mounting in the both ends of frame 2, make the piston rod of cylinder pass behind frame 2 bolt fixed connection on sliding seat 3 to make the piston rod axial of cylinder be on a parallel with the slip direction of sliding seat 3. Thereby pushing the sliding seat 3 to be close to the position of the foundation pile hole 1 when the piston rod of the air cylinder extends out.

Referring to fig. 1 and 2, guide rollers 31 are rotatably mounted on the side walls of the two sliding seats 3 close to each other, and the rotation axis of each guide roller 31 is perpendicular to the axis of the foundation pile hole 1 and tangent to a concentric circle with the axis of the foundation pile hole 1 as the center. The stand pipe is equipped with at least two sets ofly along vertical direction evenly spaced on sliding seat 3, can be three groups or even more, and guide roll 31 is equipped with a plurality of groups along foundation pile hole circumference at the interval on sliding seat 3. At least two groups of guide rollers 31 are attached to the outer wall of the grouting pipe, so that the guide rollers 31 can vertically guide the grouting pipe.

Referring to fig. 1 and 2, a water tank 91 is installed on the frame 2, tap water is contained in the water tank 91, and a spray head 9 is further installed on the sliding seat 3. A water service pipe 92 is welded on the sliding seat 3 along the circumferential direction of the hole 1, the water outlet port of the spray head 9 faces the grouting pipe, and the water inlet port of the spray head 9 is communicated with the water service pipe 92. A water pipe 92 communicating with the inside is connected to a side wall of the water tank 91, and one end of the water pipe 92 communicating with the water pipe 92 is connected to the water tank 91. The water pipe 92 is also provided with a water pump 93, and the water pump 93 is fixedly installed on the water tank 91 through bolts. The water inlet end of the water pump 93 faces the water tank 91, and the water outlet end faces the water pipe 92.

When the slip casting pipe is lifted, the water pump 93 is started, clear water in the water tank 91 is pumped out through the water pump 93 and is flushed on the outer wall of the slip casting pipe, and therefore the outer wall of the slip casting pipe is cleaned.

Referring to fig. 3, a support frame is welded and fixed on the top wall of the sliding seat 3, and a lapping table 5 is arranged above the support frame. Welded fastening has the vertical guide sleeve of axis on the support frame, vertical fixedly connected with guide bar on the diapire of overlap joint platform 5, and the guide bar is coaxial to be worn to establish in the guide sleeve, and overlap joint platform 5 is the vertical lift in support frame top. The distance from the side wall of the overlap joint platform 5 close to the foundation pile hole opening 1 is slightly larger than the distance from the side wall of the sliding seat 3 close to the foundation pile hole opening 1.

Referring to fig. 3 and 4, on the outer wall of the grouting pipe, at the two ends of each pipe section, lap joint lugs 11 parallel to the pipe section are welded, when you pour concrete, the lap joint lugs 11 on the grouting pipe are lapped on the lap joint table 5, and then the lap joint table 5 is driven to drive the grouting pipe to vertically ascend and descend. In order to drive the joining platform 5 to ascend and descend, the sliding seat 3 is provided with a lifting device 6 for driving the joining platform 5 to ascend and descend, and in the embodiment, the lifting device 6 comprises a rotating rod 61 and a second motor 62. The second motor 62 is fixedly mounted on the sliding seat 3 through a bolt, one end of the rotating rod 61 is fixedly connected with an output shaft of the motor through a bolt, and the other end of the rotating rod is rotatably mounted with a roller 63. The axis of the rotating rod 61 is perpendicular to the axis of the output shaft of the second motor 62, and the axis of the roller 63 is parallel to the axis of the output shaft of the second motor 62. The axis of the output shaft of the second motor 62 is located outside the projection range of the lapping table 5 on the upper plane of the sliding seat 3, and when the second motor 62 is started, the end of the rotating rod 61 with the roller 63 rotates from bottom to top to the side of the second motor 62 close to the lapping table 5. Thereby realize at the ascending in-process of overlap joint platform 5, promote slowly to rise through dwang 61, the dwang 61 breaks away from the back from the overlap joint platform 5, and the free fast decline of overlap joint platform 5 for the slip casting pipe is put in foundation pile drill way 1 slowly to carry fast.

In other embodiments, the lifting device 6 may be a third motor and a cam. The third motor is fixedly installed on the sliding seat 3 through bolts, and the cam is fixedly connected with the output shaft of the third motor, so that the central line of the cam is parallel to the axis of the output shaft of the third motor. And then the side wall of the cam is in sliding contact with the bottom wall of the lapping table 5, so that the lapping table 5 is driven to lift when the cam rotates.

Referring to fig. 3 and 4, the slide base 3 is provided with a damper 32 to reduce the impact force on the slide base 3 when the joining table 5 is free-falling. In this embodiment, the damping member 32 is a cushion rubber pad, and the cushion rubber pad is fixedly mounted on the top wall of the supporting frame.

Referring to fig. 3 and 5, in order to stabilize the lap joint of the lap joint lug 11 on the grouting pipe on the lap joint table 5, a clamping assembly for preventing the lap joint lug 11 from upwardly separating from the lap joint table 5 by a long distance is arranged on the lap joint table 5, and in this embodiment, the clamping assembly includes a pressing plate 7, a connecting rod, a top rod 8 and a butt rod 81. A strip-shaped hole 71 is formed in the top wall of the lapping table 5 along the sliding direction of the sliding seat 3, a moving block is arranged in the strip-shaped hole 71 in a sliding mode, and the connecting rod vertically penetrates through the moving block and is welded with the moving block into a whole. The pressing plate 7 is welded at the top end of the connecting rod, a gap is reserved between the pressing plate 7 and the lapping table 5, and the height of the gap is not less than two times of the thickness of the lapping lug 11. The strip-shaped hole 71 is internally provided with a first elastic member 73 for driving the pressing plate 7 and the connecting rod 72 to slide towards the position of the foundation pile hole opening 1, in the embodiment, the first elastic member 73 is a first spring, one end of the first spring is welded on one end of the strip-shaped hole 71, which is far away from the foundation pile hole opening 1, and the other end of the first spring abuts against the moving block.

Referring to fig. 3 and 5, a sliding installation hole is further formed in the lapping table 5 along the sliding direction of the sliding seat 3, and the sliding installation hole is located on one side, close to the foundation pile hole opening 1, of the strip-shaped hole 71. The sliding mounting hole is internally provided with a sliding block 83, and the mandril 8 vertically slides and penetrates through the sliding block 83. The ejector rod 8 is sleeved with a second elastic element 82 for driving the ejector rod 8 to extend out of the top wall of the lapping table 5, in this embodiment, the second elastic element 82 is a second spring, one end of the second spring is fixedly connected to the bottom end of the ejector rod 8, and the other end of the second spring is fixedly connected to the sliding block 83. The abutting rod 81 is parallel to the sliding direction of the sliding block 83, is welded and fixed at the bottom end of the ejector rod 8 and faces one side of the connecting rod. The sliding mounting hole is provided with a third elastic member 84 for driving the sliding block 83 to slide close to the connecting rod, in this embodiment, the third elastic member 84 is a third spring, one end of the third spring is fixedly connected to one end of the sliding mounting hole close to the foundation pile hole opening 1, and the other end of the third spring abuts against the sliding block 83. The stiffness coefficient of the third spring is larger than that of the first spring, and when the abutting rod 81 abuts on the lower portion of the connecting rod, the connecting rod can be pushed to slide in the strip-shaped hole 71 to one end far away from the orifice 1.

Referring to fig. 3 and 5, after the lift pin 8 is lifted by the first spring, the abutment rod 81 is higher than the bottom end of the connecting rod, and the lift pin 8 protrudes from the top wall of the landing stage 5. In order to drive the sliding block 83 to approach the foundation pile hole 1 when the sliding seat 3 slides away from the foundation pile hole 1, a stop rod 85 is further welded on the frame 2, and in the sliding process of the sliding seat 3, the stop rod 85 contacts with the sliding block 83 and pushes the sliding block 83 and the abutting rod 81 to be away from the connecting rod, so that the abutting rod 81 can extend out of the top wall of the overlapping table 5 under the action of the second spring.

The implementation principle of a bored pile grouting device in the embodiment of the application is as follows: when pouring concrete, the spliced pipe sections are inserted into the opening 1. Then, the first motor 42 is started to drive the bidirectional screw rod 41 to rotate, and in the rotating process of the bidirectional screw rod 41, the two threaded sleeves 43 are driven to move on the bidirectional screw rod 41, so that the two sliding seats 3 are driven to synchronously approach, and the grouting pipes are clamped. The guide roller 31 on the sliding seat 3 can guide and correct the grouting pipe. Then, the grouting pipe is lowered to enable the lapping lug 11 on the grouting pipe to be lapped on the lapping table 5, the second motor 62 is started again to drive the rotating rod 61 to rotate, the rotating rod 61 is intermittently abutted on the bottom wall of the lapping table 5 in the repeated rotating process, the lapping table 5 is lifted up, and then the lapping table 5 freely falls down, so that the grouting pipe is driven to move in the orifice 1. When guaranteeing that concrete flow is smooth and easy in the slip casting pipe, keep the slip casting pipe to remove the in-process direction vertical, effectively prevent slip casting pipe and the contact of 1 interior steel reinforcement cage in drill way, improve foundation pile quality to the manpower is saved.

The embodiment of the application also discloses a cast-in-situ bored pile construction method. The method comprises the following steps:

(1) measuring and positioning, and positioning the pile machine: arranging a construction site, laying sleepers and correcting by using a level ruler before a drilling machine is in place, ensuring the stability and firmness of the drilling machine, measuring and lofting a pile position, and embedding a steel casing;

(2) pile hole forming: drilling on the ground, wherein in the drilling process, slurry is used for supplementing, the drilling speed is controlled during drilling, after the drilling depth reaches the design requirement, cleaning is carried out, and during cleaning, drilling is carried out at intervals to stir the slurry, so that sediments at the bottom of the hole float out of the hole opening 1;

(4) concrete pouring: splicing the pipe sections on the ground to form a grouting pipe, hanging the grouting pipe into a pile opening, and performing primary irrigation by adopting a large hopper and isolation ball method. In the upward pouring process, the lap joint lug 11 on the grouting pipe is lapped on the lap joint table 5 to drive the lap joint table 5 to move up and down, so that the grouting pipe is lifted up and down and is quickly placed slowly, but the distance is not more than 300mm, and the smooth flowing of concrete in the grouting pipe is ensured. Lifting and disassembling the grouting pipe in due time along with the rising of the concrete, cleaning the pipe section and recycling for later use.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bored concrete pile slip casting device which characterized in that: the device comprises a rack (2) arranged at a hole opening (1) of a foundation pile, wherein two sliding seats (3) are symmetrically and radially arranged on the rack (2) along the hole opening (1) in a sliding manner, the two sliding seats (3) are respectively positioned at two sides of the hole opening (1), a guide roller (31) is rotatably arranged on the side wall, close to the hole opening (1), of each sliding seat (3), the axis of each guide roller (31) is perpendicular to the axis of the hole opening (1), at least two groups of guide rollers (31) are arranged at intervals along the vertical direction, and a driving device (4) for driving the two sliding seats (3) to synchronously and reversely slide is arranged on the rack (2);

still include overlap joint ear (11) of rigid coupling on the outer wall of pipeline section both ends, it is provided with along vertical direction lift on sliding seat (3) and supplies overlap joint ear (11) lapped overlap joint platform (5), be provided with on sliding seat (3) and be used for ordering about the reciprocal elevating gear (6) that goes up and down of overlap joint platform (5).

2. A bored pile grouting device according to claim 1, wherein: drive arrangement (4) include two-way lead screw (41), first motor (42) and two screw sleeve (43), two-way lead screw (41) set up on frame (2) along sliding seat (3) slip direction, the both ends of two-way lead screw (41) all are rotated with the mounting bracket and are connected, two screw sleeve (43) respectively the screw-thread cup joint on two-way lead screw (41) opposite screw thread, two screw sleeve (43) respectively with two sliding seat (3) fixed connection, first motor (42) set firmly on frame (2), the output shaft of first motor (42) and the coaxial fixed connection of one end of two-way lead screw (41).

3. A bored pile grouting device according to claim 1, wherein: elevating gear (6) are including dwang (61) and second motor (62), second motor (62) rigid coupling is on sliding seat (3), the one end of dwang (61) and the output shaft fixed connection of second motor (62), the length direction of dwang (61) is perpendicular with the output shaft axial of second motor (62), the output shaft of second motor (62) is located overlap joint platform (5) projection range's the outside on the horizontal plane, the one end that second motor (62) were kept away from in dwang (61) can contact on the diapire of overlap joint platform (5).

4. A bored pile grouting device according to claim 3, wherein: the one end that second motor (62) were kept away from in dwang (61) rotates and is provided with gyro wheel (63), the axis of rotation of gyro wheel (63) is parallel with the output shaft axis of second motor (62).

5. A bored pile grouting device according to claim 1, wherein: the shock absorbing part (32) is arranged on the sliding seat (3), and the shock absorbing part (32) is located under the lapping table (5).

6. A bored pile grouting device according to claim 1, wherein: the overlap joint platform is characterized in that a pressing plate (7) used for limiting the overlap joint lug (11) to ascend on the overlap joint platform (5) is arranged on the overlap joint platform (5) in a radial sliding mode along the hole opening (1), a strip-shaped hole (71) is formed in the overlap joint platform (5) in a sliding mode along the pressing plate (7), a connecting rod (72) is fixedly arranged on the bottom wall of the pressing plate (7), the connecting rod (72) penetrates through the strip-shaped hole (71) in a sliding mode along the length direction of the strip-shaped hole (71), a first elastic piece (73) used for driving the pressing plate (7) to be close to the hole opening (1) is arranged on the overlap joint platform (5), an ejector rod (8) with the top wall extending out of the overlap joint platform (5) is arranged on the overlap joint platform (5) in a sliding mode along the vertical direction, the ejector rod (8) is located in the projection range of the overlap joint lug (11) on the overlap joint platform (5), and a butt joint rod (81) used for, when butt joint pole (81) and connecting rod (72) butt clamp plate (7) are located overlap joint ear (11) outside the projection scope on overlap joint platform (5), be provided with on overlap joint platform (5) and be used for driving ejector pin (8) gliding second elastic component (82) that makes progress, butt joint pole (81) breaks away from connecting rod (72) downwards when ejector pin (8) top and overlap joint platform (5) parallel and level.

7. A bored pile grouting device according to claim 6, wherein: the slip direction of clamp plate (7) is parallel with sliding seat (3) slip direction, it is provided with slider (83) to slide along clamp plate (7) slip direction on overlap joint platform (5), ejector pin (8) set up on slider (83), be provided with third elastic component (84) that are used for driving slider (83) away from drill way (1) on overlap joint platform (5), the stiffness coefficient of third elastic component (84) is greater than the stiffness coefficient of first elastic component (73), shelves pole (85) have set firmly on frame (2), shelves pole (85) are used for sliding when keeping away from drill way (1) with slider (83) and keep away from the one end contact of drill way (1).

8. A bored pile grouting device according to claim 1, wherein: be provided with water tank (91) on frame (2), be provided with shower nozzle (9) on sliding seat (3), the play water port of shower nozzle (9) is towards the pipeline, the port of intaking of shower nozzle (9) is connected with water pipe (92), the other end and water tank (91) intercommunication of water pipe (92), be provided with water pump (93) on water pipe (92), the port of intaking of water pump (93) is towards water tank (91).

9. A bored pile construction method including the bored pile grouting apparatus according to any one of claims 1 to 8, comprising the steps of: