CN115679961A

CN115679961A - Rapid pile extractor for small bridge pile head and use method of rapid pile extractor

Info

Publication number: CN115679961A
Application number: CN202211459816.1A
Authority: CN
Inventors: 孙亭亭; 蒋玲; 杨卫红; 洪英; 王倩; 程靖轩
Original assignee: Nanjing Communications Institute of Technology
Current assignee: Nanjing Communications Institute of Technology
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-02-03

Abstract

The invention discloses a quick pile extractor for a small bridge pile head, which comprises a driving mechanism and a clamping mechanism, wherein the bottom of the driving mechanism is fixedly installed with the top of the clamping mechanism. According to the invention, the semicircular ring, the conical block and the fixed base are arranged, the bottom of the base mechanism reaches the ground, the shifting plate and the conical block are inserted into the soil layer, the shifting plate and the conical block can enable the bottom of the base mechanism to be tightly pressed with the ground and stably stand on the outer ring position of the pile head, the base mechanism is not easy to incline, the pile head is prevented from being difficult to pull out, meanwhile, the pile head is pulled out, the compression spring is shaken up and down to drive the conical block to swing up and down, a large amount of mud blocks at the bottom of the conical block and the stabilizing rod are dropped, the fixing effect of the fixed base and the ground at the next time is prevented from being influenced, the shifting plate is controlled to rotate inwards by rotating the connecting rod, the soil layer on the outer ring of the pile head is loosened by the shifting plate, when the shifting plate moves upwards, the mud is brought into a pile pit, the automatic soil filling effect can be achieved, and the workload of subsequent soil filling is reduced.

Description

Rapid pile extractor for small bridge pile head and use method of rapid pile extractor

Technical Field

The invention relates to the technical field of pile extractors, in particular to a quick pile extractor for a small bridge pile head and a using method thereof.

Background

The pile extractor is a pile machine which extracts the pile out of the stratum by using vibration, static force or hammering action, the pile extracting operation usually adopts a corresponding vibration pile extractor, a static pile press or a double-acting pneumatic hammer, and is matched with a pile frame and a rigging, so the pile extractor is also called a vibration pile extractor and a static pile press; when the vibrating pile extractor works, the vibrating pile extractor is fixedly arranged at the pile head, the vibrating pile extractor is suspended under a lifting hook through a spring vibration absorber and a rigging, the pile extractor is started, the vibration generated by a vibrator causes the pile and the soil to resonate, the soil structure is damaged, the friction force between the pile body and the soil is reduced, and the rigging is tightened at the same time to gradually extract the pile; the hydraulic pile extractor clamps the pile head by using the pile clamp, the hydraulic cylinder forcibly pushes the pile clamp to lift the pile upwards for a certain distance, and the pile is extracted section by section, so that the hydraulic pile extractor is suitable for extracting I-shaped steel or section steel piles in clay, sandy soil or soil layers containing a small amount of gravels.

In the prior art, for example, chinese patent application CN113737795A, "a pile embracing type pile extracting device of a pile driving and extracting machine" includes: the pile gripper comprises a lifter, a main support, a pile gripper and a connecting flange; the lifter is connected to the bracket; one end of the pile gripper is connected with the lifter, and the other end of the pile gripper is in lap joint with the pile; the connecting flange is connected to the main bracket and is used for being connected with a sliding plate of the pile driver; the pile gripper is wound on the lifter in a spanning mode through a steel wire rope, and the pile gripper is sleeved on the pile rod. The pile gripper is pile gripper, includes: the pile gripper comprises a cylindrical pile gripper, a rectangular pile gripper, an I-shaped steel pile gripper and a channel steel pile gripper. The advantages are that: the pile pulling efficiency is high; the pile pipe with the height larger than the stroke of the lifting oil cylinder can be pulled out; the problem that pile pulling fails due to the fact that a guardrail pile pipe is broken by support cannot occur in the pile pulling process; the pile pulling device automatically falls along with the sliding plate of the pile driving and pulling integrated machine, and the sliding plate only has a supporting function on the pile pulling device and cannot cause the pile driving and pulling integrated machine to incline; the vibration is small, the damage to the pile machine is small, and the service life of the pile machine is prolonged; the noise is low when the device works.

The existing bridge dismantling engineering needs to use a pile extractor to extract a pile head, when the existing pile extractor is used, a pile extractor base needs to be fixed on the ground of an outer ring of the pile head, then a clamping device is used for clamping the top of the pile head, and finally the whole pile head is extracted upwards; but the base of pile extractor is difficult fixed, when pile head outer lane ground is not flat enough, can lead to pile extractor and ground to fix firm and for the tilt state inadequately to when making follow-up centre gripping and rebound pile head, the pile head slope is difficult to be extracted, needs lifting device to consume more energy and extracts the pile head, has reduced the work efficiency that the pile extractor extracted the pile head, causes the damage of grip ring simultaneously easily, and then influences the grip effect behind the grip ring.

We have therefore proposed a quick pile extractor for small bridge heads, which facilitates the solution of the problems set out above.

Disclosure of Invention

The invention aims to provide a quick pile extractor for a small bridge pile head, which aims to solve the problems that a base of the pile extractor is not easy to fix, when the ground of the outer ring of the pile head is not flat enough, the pile extractor is not firmly fixed with the ground and is in an inclined state, so that the pile head is not easy to extract when the pile head is subsequently clamped and moved upwards, hoisting equipment is needed to consume more energy to extract the pile head, the working efficiency of extracting the pile head by the pile extractor is reduced, and meanwhile, a clamping ring is easy to damage, so that the clamping effect behind the clamping ring is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a quick pile extractor for a small bridge pile head comprises a driving mechanism and a clamping mechanism, wherein the bottom of the driving mechanism is fixedly installed with the top of the clamping mechanism, a base mechanism is arranged at the bottom of the clamping mechanism, the clamping mechanism comprises a mounting plate II, a clamping shell, a driving motor, a driving rod and a clamping block, two bottom plates are symmetrically and fixedly connected with two ends of the bottom of the clamping shell, the base mechanism comprises a hydraulic drive, a fixed base, a semicircular ring, a top plate, a protective ring and a stabilizing rod, the number of the hydraulic drives is two, the two hydraulically driven bottoms of the hydraulic drives are fixedly installed with the top of the fixed base, a jacking rod is arranged at the top of the hydraulic drive, two ends of the semicircular ring are fixedly installed with two ends of the fixed base, a plurality of convex shells are uniformly arranged at the top of the semicircular ring, a transverse rod is fixedly connected with the bottoms of the convex shells, a plurality of compression springs are uniformly arranged at the bottoms of the transverse rod, the bottoms of the compression springs are movably installed with the top of the stabilizing rod, and a plurality of conical blocks are uniformly arranged at the bottom of the stabilizing rod;

the fixed base comprises a base plate, a fixed plate, a supporting plate and a connecting plate, wherein a fixed groove is formed in the bottom of the base plate, one end of the connecting plate is fixedly installed on the inner side of the fixed plate, the other end of the connecting plate is fixedly installed on the inner side of the supporting plate, three connecting pipes are uniformly arranged at the top of the connecting plate, three rotating connecting rods are uniformly and fixedly connected to the bottom of the supporting plate, a shifting plate is rotatably connected to the bottoms of the three rotating connecting rods, a connecting end is arranged on the outer side of the fixed plate, a hoisting device lifts the pile extractor upwards and leaves the ground for a certain distance, the central position of the base mechanism is aligned to the top of a pile head, the pile extractor moves the pile extractor downwards slowly, the bottom of the base mechanism reaches the ground firstly, the pile extractor continues to move downwards for a certain distance, and a conical block and the shifting plate are inserted into a soil layer, the bottom of the base mechanism is tightly pressed with the ground, the conical block at the bottom of the semicircular ring is inserted into a ground soil layer, the stabilizing rod upwards extrudes the compression spring, the stabilizing rod stays on the surface of the ground, and meanwhile, the compression spring vertically shakes under the action of elasticity after the pile head is pulled out to drive the conical block to vertically swing, so that a large amount of mud blocks at the bottom of the conical block and the stabilizing rod fall off, the fixing effect of the fixing base and the ground at the next time is avoided from being influenced, meanwhile, the stirring plate can bring the mud on the outer ring of the pile head into a pile pit when the pile head is pulled out, the automatic filling effect can be achieved, the workload of subsequent filling is reduced, the pulling efficiency of the small pile head of the bridge is accelerated, the stabilizing rod, the semicircular ring and the conical block can enable the base mechanism to stably stand at the outer ring position of the pile head, meanwhile, the hoisting equipment controls the rotating connecting rod to rotate through a pipe fitting, the stirring plate rotates inwards, and the stirring plate enables the outer ring soil layer of the pile head to be loosened, through the combination of the poking plate, the semi-circular ring and the conical block, the base mechanism can be stably fixed on the ground and is not easy to incline, and the pile head is prevented from inclining and being not easy to pull out during pile pulling.

Preferably, the one end of connecting pipe and the inboard fixed connection of fixed plate, just the other end of connecting pipe and the inboard fixed connection of backup pad, the connecting pipe is connected with the rotation connecting rod, and the connecting pipe is connected through connecting end and pipe fitting simultaneously, and lifting device can reach the control through pipe fitting and connecting pipe and rotate connecting rod pivoted effect.

Preferably, the top of fixed plate and the inner wall fixed mounting of fixed slot, the both ends of bed plate and the both ends fixed mounting of semicircle ring, the bed plate is fixed through bottom fixed slot and fixed plate, and the fixed slot plays the effect of installation fixed plate.

Preferably, the top of bed plate and hydraulic drive's bottom fixed mounting, the top of jacking rod and the bottom fixed mounting of roof, just the bottom of roof and the top fixed mounting of guard ring, guard ring play the protective effect to jacking rod, and the roof can make base mechanism and fixture install fixedly simultaneously.

Preferably, the top of roof and the bottom fixed mounting of bottom plate, the cavity has been seted up to the inboard symmetry in both ends of centre gripping shell, driving motor's one end and the inner wall fixed mounting of cavity, driving motor's the other end and the one end movable mounting of actuating lever, driving motor can drive grip block and centre gripping ring through the actuating lever and move to the outside, makes two centre gripping rings keep away from to both sides, and driving motor also can drive the inside side movement of centre gripping ring reversal simultaneously, makes two centre gripping rings live with the pile head centre gripping, and base mechanism and ground are fixed and fixture live the pile head centre gripping this moment.

Preferably, the one end of grip block and the one end fixed mounting of actuating lever, just the other end fixedly connected with grip ring of grip block, the top of centre gripping shell and the bottom fixed mounting of mounting panel two, just mounting hole two has been seted up to the top both ends symmetry of mounting panel two, and mounting panel one and mounting panel two can carry out the thread tightening through mounting hole one and mounting hole two, make things convenient for this fixture convenience to change according to the difference of pile head shape.

Preferably, hydraulic drive's outside fixedly connected with holding ring, the inner wall of holding ring is provided with the pipe fitting, the bottom of pipe fitting and the one end movable mounting of connection end, holding ring are used for fixed pipe fitting, avoid the pipe fitting winding to the base mechanism, and lifting device can rotate the connecting rod through pipe fitting and connecting pipe control simultaneously.

Preferably, actuating mechanism includes installed part, casing, protecting crust and mounting panel one, the top of casing and the bottom fixed mounting of installed part, the through-hole has been seted up to the bottom both ends symmetry of casing, fixes the installed part at actuating mechanism top and lifting device's arm, is connected the top of pipe fitting through arm and lifting device simultaneously, and lifting device can rotate the connecting rod activity through pipe fitting and connecting pipe control.

Preferably, the bottom fixedly connected with drive assembly of protecting crust, two dwangs of the both ends symmetry fixedly connected with of protecting crust, the one end of dwang and the inner wall movable mounting of through-hole, drive assembly's bottom and the top fixed mounting of mounting panel one, mounting hole one has been seted up to the top both ends symmetry of mounting panel one, and lifting device can be connected with drive assembly to make drive assembly and protecting crust pass through the dwang and rotate, reach the purpose of adjustment fixture centre gripping angle.

A use method of a quick pile extractor for a small bridge pile head comprises the following steps:

s1, firstly, mounting a driving mechanism, a pipe fitting and hoisting equipment, enabling the hoisting equipment to move up and down the driving mechanism, and simultaneously, wirelessly controlling the driving motor to be started, wherein the driving motor drives a clamping block and a clamping ring to move towards the outer side through a driving rod, so that the two clamping rings are separated towards two sides;

s2, aligning the clamping mechanism and the base mechanism to the top of the pile head, enabling the pile extractor to move downwards by the hoisting equipment to enable the base mechanism to be tightly pressed on the ground, and meanwhile, controlling the rotation of the rotating connecting rod through the hoisting equipment and the pipe fitting to enable the poking plate to rotate inwards;

s3, at the moment, the top of the pile head reaches the middle of the two clamping rings, and at the moment, the clamping rings move towards the inner side through the driving motor to clamp the pile head;

s4, hydraulic drive is started through the hoisting equipment, the hoisting equipment pulls the pile head upwards through the jacking rod while pulling the pile head upwards through the driving mechanism and the clamping mechanism, when the jacking rod reaches the highest position, the hoisting equipment lifts the whole pile extractor upwards, and the pile head is completely pulled out.

Compared with the prior art, the invention has the beneficial effects that:

1. by arranging the fixed base, the hoisting equipment enables the bottom of the base mechanism to reach the ground, the pile extractor continues to move downwards for a certain distance, the shifting plate is inserted into a soil layer and can enable the bottom of the base mechanism to be tightly pressed with the ground, the rotating connecting rod is controlled to rotate through the pipe fitting, the shifting plate is enabled to rotate inwards, the shifting plate enables a soil layer on the outer ring of the pile head to be loosened, when the shifting plate moves upwards and is extracted, the soil on the outer ring of the pile head is brought into a pile pit, the automatic soil filling effect can be achieved, the workload of subsequent soil filling is reduced, and the extracting efficiency of the small pile head of the bridge is accelerated;

2. by arranging the semicircular ring, the conical block and the stabilizing rod, the conical block at the bottom of the semicircular ring is inserted into a ground soil layer, the conical block can enable the base mechanism to stably stand at the outer ring position of the pile head, the base mechanism can be stably fixed on the ground and is not prone to inclination by combining the shifting plate, the semicircular ring and the conical block, the pile head is prevented from being inclined and not prone to being pulled out when the pile is pulled out, meanwhile, the compression spring vertically shakes under the action of elasticity after the pile head is pulled out, the conical block is driven to vertically swing, a large amount of mud blocks at the bottom of the conical block and the stabilizing rod fall off, and the effect of fixing the base and the ground next time is avoided being influenced;

3. through actuating mechanism and fixture combination, when upwards extracting the pile head, hydraulic drive passes through the supplementary fixture rebound of jack-up pole, and supplementary pile head upwards extracts promptly, until the pile head is extracted completely, reaches the effect of extracting the little pile head of bridge fast, improves the work efficiency of extracting the pile head.

Drawings

FIG. 1 is a perspective view of a rapid pile extractor for a small bridge pile head according to the present invention;

FIG. 2 is a front view of the quick pile extractor for a small bridge pile head of the present invention;

FIG. 3 is a perspective view of the driving mechanism of the rapid pile extractor for a small bridge pile head according to the present invention;

FIG. 4 is a perspective view of the bottom structure of the clamping mechanism of the rapid pile extractor for a small bridge pile head according to the present invention;

FIG. 5 is a schematic structural diagram of a base mechanism of a rapid pile extractor for a small bridge pile head according to the present invention;

FIG. 6 is a schematic view of the bottom structure of the base mechanism of the rapid pile extractor for a small bridge pile head according to the present invention;

FIG. 7 is an enlarged detail view of the position A in FIG. 6 of the quick pile extractor for the small bridge pile head according to the present invention;

FIG. 8 is a schematic structural view of a fixed base of the rapid pile extractor for a small bridge pile head according to the present invention;

fig. 9 is a schematic structural view of a poking plate of the rapid pile extractor for the small bridge pile head of the invention.

In the figure:

1. a drive mechanism; 2. a clamping mechanism; 3. a base mechanism; 11. a mounting member; 12. a housing; 13. a protective shell; 14. a through hole; 15. a drive assembly; 16. a first mounting plate; 17. a first mounting hole; 18. rotating the rod; 21. a second mounting plate; 22. a second mounting hole; 23. a clamping housing; 24. a clamping block; 25. a drive rod; 26. a drive motor; 27. a cavity; 28. a base plate; 29. a clamp ring; 31. hydraulic driving; 32. a semicircular ring; 33. a positioning ring; 34. a pipe fitting; 35. a convex shell; 36. jacking up the rod; 37. a top plate; 38. a guard ring; 39. a cross bar; 40. a compression spring; 41. a fixed base; 42. a stabilizing rod; 43. a conical block; 411. a base plate; 412. fixing grooves; 413. connecting the end heads; 414. a fixing plate; 415. a support plate; 416. rotating the connecting rod; 417. a poking plate; 418. a connecting pipe; 419. a connecting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to FIGS. 1-9: a quick pile extractor for small bridge pile heads comprises a driving mechanism 1 and a clamping mechanism 2, the bottom of the driving mechanism 1 is fixedly installed with the top of the clamping mechanism 2, a base mechanism 3 is arranged at the bottom of the clamping mechanism 2, the clamping mechanism 2 comprises a second mounting plate 21, a clamping shell 23, a driving motor 26, a driving rod 25 and a clamping block 24, two bottom plates 28 are symmetrically and fixedly connected with two ends of the bottom of the clamping shell 23, the base mechanism 3 comprises a hydraulic driver 31, a fixed base 41, a semicircular ring 32, a top plate 37, a protective ring 38 and a stabilizing rod 42, the number of the hydraulic driver 31 is two, the bottoms of the two hydraulic drivers 31 are fixedly installed with the top of the fixed base 41, a jacking rod 36 is arranged at the top of the hydraulic driver 31, two ends of the semicircular ring 32 are fixedly installed with two ends of the fixed base 41, a plurality of convex shells 35 are uniformly arranged at the top of the semicircular ring 32, and a cross rod 39 is fixedly connected with the bottoms of the convex shells 35, the bottom of the cross bar 39 is uniformly provided with a plurality of compression springs 40, the bottom of the compression springs 40 is movably mounted with the top of the stabilizing rod 42, the bottom of the stabilizing rod 42 is uniformly provided with a plurality of conical blocks 43, the fixing base 41 comprises a base plate 411, a fixing plate 414, a supporting plate 415 and a connecting plate 419, the bottom of the base plate 411 is provided with a fixing groove 412, one end of the connecting plate 419 is fixedly mounted with the inner side of the fixing plate 414, the other end of the connecting plate 419 is fixedly mounted with the inner side of the supporting plate 415, the top of the connecting plate 419 is uniformly provided with three connecting pipes 418, the bottom of the supporting plate 415 is uniformly and fixedly connected with three rotating connecting rods 416, the bottoms of the three rotating connecting rods 416 are rotatably connected with a poking plate 417, the outer side of the fixing plate 414 is provided with a connecting end 413, the hoisting equipment hoists the pile extractor upwards and leaves the ground for a distance, and aligns the central position of the base mechanism 3 with the top of a pile head, the hoisting equipment moves the pile extractor downwards slowly, the bottom (the semicircular ring 32 and the fixed base 41) of the base mechanism 3 reaches the ground firstly, the hoisting equipment enables the pile extractor to continue moving downwards for a certain distance, the conical block 43 and the poking plate 417 are inserted into the soil layer, the bottom of the base mechanism 3 is tightly pressed with the ground, the conical block 43 at the bottom of the semicircular ring 32 is inserted into the soil layer of the ground, the stabilizing rod 42 upwards extrudes the compression spring 40, the stabilizing rod 42 stays on the surface of the ground, meanwhile, after the pile head is pulled out, the compression spring 40 shakes up and down under the action of elasticity to drive the conical block 43 to swing up and down, a large amount of mud blocks at the bottom of the conical block 43 and the stabilizing rod 42 fall off, and the fixing effect of the fixed base 41 and the ground at the next time is prevented from being influenced, meanwhile, when the pile head is pulled out, the poking plate 417 can bring soil on the outer ring of the pile head into a pile pit, the automatic soil filling effect can be achieved, the workload of subsequent soil filling is reduced, the pulling-out efficiency of the small pile head of the bridge is accelerated, the base mechanism 3 can stably stand at the outer ring position of the pile head through the stabilizing rod 42, the semicircular ring 32 and the conical block 43, meanwhile, the hoisting equipment controls the rotation connecting rod 416 to rotate through the pipe fitting 34, the poking plate 417 rotates towards the inner side, the poking plate 417 enables the soil layer on the outer ring of the pile head to be loosened, through the combination of the poking plate 417, the semicircular ring 32 and the conical block 43, the base mechanism 3 can be stably fixed on the ground and is not prone to tilt, and the situation that the pile head is not prone to being pulled out when the pile head is pulled out is avoided.

According to fig. 8 and 9, one end of the connection pipe 418 is fixedly connected to the inner side of the fixing plate 414, the other end of the connection pipe 418 is fixedly connected to the inner side of the supporting plate 415, the connection pipe 418 is connected to the rotating link 416, and the connection pipe 418 is connected to the pipe 34 through the connection end 413, so that the hoisting equipment can control the rotation of the rotating link 416 through the pipe 34 and the connection pipe 418.

As shown in fig. 6, 8 and 9, the top of the fixing plate 414 is fixedly mounted to the inner wall of the fixing groove 412, both ends of the base plate 411 are fixedly mounted to both ends of the semicircular ring 32, the base plate 411 is fixed by the bottom fixing groove 412 and the fixing plate 414, and the fixing groove 412 plays a role of mounting the fixing plate 414.

According to the fig. 6-9, the top of the base plate 411 is fixedly mounted with the bottom of the hydraulic drive 31, the top of the jacking rod 36 is fixedly mounted with the bottom of the top plate 37, and the bottom of the top plate 37 is fixedly mounted with the top of the guard ring 38, the guard ring 38 has a guard effect on the jacking rod 36, and the top plate 37 can fix the base mechanism 3 and the clamping mechanism 2.

As shown in fig. 4-7, the top of the top plate 37 and the bottom of the bottom plate 28 are fixedly mounted, the inner sides of the two ends of the clamping housing 23 are symmetrically provided with cavities 27, one end of the driving motor 26 is fixedly mounted on the inner wall of the cavity 27, the other end of the driving motor 26 is movably mounted on one end of the driving rod 25, the driving motor 26 can drive the clamping blocks 24 and the clamping rings 29 to move outwards through the driving rod 25, so that the two clamping rings 29 are far away from the two sides, and meanwhile, the driving motor 26 can also drive the clamping rings 29 to move inwards in the opposite direction, so that the two clamping rings 29 clamp the pile head, and at this time, the base mechanism 3 and the ground are fixed, and the clamping mechanism 2 clamps the pile head.

According to the structure shown in fig. 4, one end of the clamping block 24 and one end of the driving rod 25 are fixedly installed, the other end of the clamping block 24 is fixedly connected with the clamping ring 29, the top of the clamping shell 23 and the bottom of the second mounting plate 21 are fixedly installed, two mounting holes 22 are symmetrically formed in two ends of the top of the second mounting plate 21, the first mounting plate 16 and the second mounting plate 21 can be fixed through the first mounting hole 17 and the second mounting hole 22 in a threaded mode, and the clamping mechanism 2 can be conveniently replaced according to different shapes of pile heads.

According to fig. 8 and 9, a positioning ring 33 is fixedly connected to the outer side of the hydraulic drive 31, a pipe 34 is arranged on the inner wall of the positioning ring 33, the bottom end of the pipe 34 is movably mounted to one end of a connecting end 413, the positioning ring 33 is used for fixing the pipe 34, the pipe 34 is prevented from being wound on the base mechanism 3, and meanwhile, the hoisting equipment can control the rotating connecting rod 416 through the pipe 34 and the connecting pipe 418.

According to the drawings of fig. 1-3, the driving mechanism 1 comprises an installation part 11, a casing 12, a protective shell 13 and a first installation plate 16, the top of the casing 12 is fixedly installed at the bottom of the installation part 11, through holes 14 are symmetrically formed in two ends of the bottom of the casing 12, the installation part 11 at the top of the driving mechanism 1 and a mechanical arm of a hoisting device are fixed, the top end of a pipe fitting 34 is connected with the hoisting device through the mechanical arm, and the hoisting device can control the movement of a rotating connecting rod 416 through the pipe fitting 34 and a connecting pipe 418.

According to the drawings of fig. 1-3, a driving assembly 15 is fixedly connected to the bottom of the protective shell 13, two rotating rods 18 are symmetrically and fixedly connected to two ends of the protective shell 13, one end of each rotating rod 18 is movably mounted on the inner wall of the through hole 14, the bottom of the driving assembly 15 is fixedly mounted on the top of the mounting plate I16, mounting holes I17 are symmetrically formed in two ends of the top of the mounting plate I16, and hoisting equipment can be connected with the driving assembly 15, so that the driving assembly 15 and the protective shell 13 can rotate through the rotating rods 18, and the purpose of adjusting the clamping angle of the clamping mechanism 2 is achieved.

firstly, mounting a driving mechanism 1, a pipe fitting 34 and hoisting equipment to enable the hoisting equipment to move up and down the driving mechanism 1, simultaneously controlling a driving motor 26 to be started in a wireless manner, driving the driving motor 26 to drive a clamping block 24 and a clamping ring 29 to move outwards through a driving rod 25 to enable the two clamping rings 29 to be separated towards two sides;

step two, aligning the clamping mechanism 2 and the base mechanism 3 to the top of a pile head, moving the pile extractor downwards by using the hoisting equipment to enable the base mechanism 3 to be tightly pressed on the ground, and controlling the rotation connecting rod 416 to rotate through the hoisting equipment and the pipe fitting 34 to enable the poking plate 417 to rotate inwards;

step three, the top of the pile head reaches the middle of the two clamping rings 29, and the clamping rings 29 are moved inwards by the driving motor 26 to clamp the pile head;

and step four, starting the hydraulic drive 31 through the hoisting equipment, pulling the pile head upwards through the driving mechanism 1 and the clamping mechanism 2 by the hoisting equipment, assisting the pile head to be pulled upwards through the jacking rod 36 by the hydraulic drive 31, and when the jacking rod 36 reaches the highest position, hoisting the whole pile extractor upwards by the hoisting equipment, and completely pulling out the pile head.

The working process and the working principle of the invention are as follows: before pulling out a small pile head of a bridge, firstly, fixedly installing a second mounting plate 21 and a first mounting plate 16 at the top of a clamping mechanism 2 through bolts, wherein the clamping mechanism 2 is convenient to replace according to different shapes of the pile head, after the clamping mechanism 2 and a driving mechanism 1 are installed, then, installing the driving mechanism 1, a pipe fitting 34 and hoisting equipment, fixing an installing part 11 at the top of the driving mechanism 1 and a mechanical arm of the hoisting equipment, simultaneously, connecting the top end of the pipe fitting 34 with the hoisting equipment through the mechanical arm, and controlling the rotation connecting rod 416 to move through the pipe fitting 34 and a connecting pipe 418 by the hoisting equipment; the hoisting equipment can move up and down the pile extractor, and meanwhile, the hoisting equipment can wirelessly control the opening or closing of the driving motor 26; the driving motor 26 is started, and the driving motor 26 can drive the clamping blocks 24 and the clamping rings 29 to move outwards through the driving rod 25, so that the two clamping rings 29 are far away towards two sides; at the moment, the hoisting equipment lifts the pile extractor upwards and leaves the ground for a distance, the central position of the base mechanism 3 is aligned to the top of the pile head, the hoisting equipment slowly moves the pile extractor downwards, the bottom (the semicircular ring 32 and the fixed base 41) of the base mechanism 3 reaches the ground first, the hoisting equipment enables the pile extractor to continue to move downwards for a distance, the conical block 43 and the shifting plate 417 are inserted into the soil layer, the bottom of the base mechanism 3 is tightly pressed with the ground, the conical block 43 at the bottom of the semicircular ring 32 is inserted into the soil layer of the ground, meanwhile, the stabilizing rod 42 upwards extrudes the compression spring 40, the stabilizing rod 42 stays on the surface of the ground, the stabilizing rod 42, the semicircular ring 32 and the conical block 43 can enable the base mechanism 3 to stably stand at the outer ring position of the pile head, meanwhile, the hoisting equipment controls the rotating connecting rod 416 to rotate through the pipe fitting 34, the shifting plate 417 rotates inwards, the shifting plate 417 loosens the soil layer at the outer ring of the pile head, and the shifting plate 417 can enable the base mechanism 3 to be stably fixed on the ground to be fixed on the ground without inclination when the pile extractor is not easy to be extracted; at the moment, the hoisting equipment controls to start the hydraulic drive 31, the hydraulic drive 31 drives the top jacking rod 36 to move downwards, the jacking rod 36 drives the driving mechanism 1 and the clamping mechanism 2 to move downwards, the top of the pile head reaches the middle of the two clamping rings 29, the hydraulic drive 31 stops working, at the moment, the hoisting equipment controls the driving motor 26 to drive the clamping rings 29 to move inwards in a reverse direction, the two clamping rings 29 clamp the pile head, at the moment, the base mechanism 3 and the ground are fixed, and the clamping mechanism 2 clamps the pile head, the hydraulic drive 31 is started again through the hoisting equipment, the hoisting equipment moves upwards slowly, the hydraulic drive 31 assists the clamping mechanism 2 to move upwards through the jacking rod 36 while the hoisting equipment pulls out the pile head upwards through the drive mechanism 1 and the clamping mechanism 2, namely the auxiliary pile head is pulled out upwards until the whole pile extractor is lifted upwards by the hoisting equipment and the pile head is completely pulled out, the pile extractor adds the semi-circle ring 32 and the fixed base 41 at the bottom of the hydraulic drive 31, the semi-circle ring 32, the poking plate 417 and the conical block 43 can lead the base mechanism 3 to be firmly fixed on the ground without being inclined easily, thereby the pile head is stably pulled out upwards, the pile head is prevented from being inclined and difficult to pull out when the pile is pulled out, the effect of quickly pulling out the small pile head of the bridge is achieved, the working efficiency of pulling out the pile head is improved, meanwhile, after the pile head is pulled out, the compression spring 40 swings up and down under the action of elasticity to drive the conical block 43 to swing up and down, so that a large number of mud blocks at the bottoms of the conical block 43 and the stabilizing rod 42 fall off, the fixing effect of the fixing base 41 and the ground at the next time is prevented from being influenced, meanwhile, when the pile head is pulled out, the poking plate 417 can bring soil on the outer ring of the pile head into the pile pit, so that the effect of automatic soil filling can be achieved, the workload of subsequent soil filling is reduced, and the pulling-out efficiency of the small pile head of the bridge is accelerated.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a bridge is quick pile extractor for little pile head, includes actuating mechanism (1) and fixture (2), the bottom of actuating mechanism (1) and the top fixed mounting of fixture (2), its characterized in that: the clamping mechanism (2) is provided with a base mechanism (3) at the bottom, the clamping mechanism (2) comprises a second mounting plate (21), a clamping shell (23), a driving motor (26), a driving rod (25) and clamping blocks (24), two bottom plates (28) are symmetrically and fixedly connected to two ends of the bottom of the clamping shell (23), the base mechanism (3) comprises hydraulic drives (31), a fixed base (41), a semicircular ring (32), a top plate (37), a guard ring (38) and stabilizing rods (42), the number of the hydraulic drives (31) is two, the bottoms of the two hydraulic drives (31) and the top of the fixed base (41) are fixedly mounted, a jacking rod (36) is arranged at the top of the hydraulic drives (31), two ends of the semicircular ring (32) and two ends of the fixed base (41) are fixedly mounted, a plurality of convex shells (35) are uniformly arranged at the top of the semicircular ring (32), a transverse rod (39) is fixedly connected to the bottom of the convex shells (35), a plurality of compression springs (40) are uniformly arranged at the bottom of the transverse rod (39), a plurality of compression springs (40) and a plurality of movable conical rods (43) are uniformly mounted at the bottom of the stabilizing rods (42);

fixed baseplate (41) includes bed plate (411), fixed plate (414), backup pad (415) and connecting plate (419), fixed slot (412) have been seted up to the bottom of bed plate (411), the one end of connecting plate (419) and the inboard fixed mounting of fixed plate (414), just the other end of connecting plate (419) and the inboard fixed mounting of backup pad (415), the top of connecting plate (419) evenly is provided with three connecting pipe (418), the even three rotation connecting rod (416) of the even fixedly connected with in bottom of backup pad (415), three the bottom of rotation connecting rod (416) is rotated and is connected with and dials board (417), the outside of fixed plate (414) is provided with connection end (413).

2. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: one end of the connecting pipe (418) is fixedly connected with the inner side of the fixing plate (414), and the other end of the connecting pipe (418) is fixedly connected with the inner side of the supporting plate (415).

3. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: the top of the fixing plate (414) is fixedly installed on the inner wall of the fixing groove (412), and two ends of the base plate (411) are fixedly installed on two ends of the semicircular ring (32).

4. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: the top of the base plate (411) is fixedly mounted with the bottom of the hydraulic drive (31), the top of the jacking rod (36) is fixedly mounted with the bottom of the top plate (37), and the bottom of the top plate (37) is fixedly mounted with the top of the guard ring (38).

5. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: the top of roof (37) and the bottom fixed mounting of bottom plate (28), cavity (27) have been seted up to the inboard symmetry in both ends of centre gripping shell (23), the inner wall fixed mounting of the one end of driving motor (26) and cavity (27), the other end of driving motor (26) and the one end movable mounting of actuating lever (25).

6. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: the one end of grip block (24) and the one end fixed mounting of actuating lever (25), just the other end fixedly connected with grip ring (29) of grip block (24), the top of centre gripping shell (23) and the bottom fixed mounting of mounting panel two (21), just mounting hole two (22) have been seted up to the top both ends symmetry of mounting panel two (21).

7. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: the outer side of the hydraulic drive (31) is fixedly connected with a positioning ring (33), the inner wall of the positioning ring (33) is provided with a pipe fitting (34), and the bottom end of the pipe fitting (34) is movably mounted with one end of a connecting end (413).

8. The quick pile extractor for the small bridge pile head of claim 1, which is characterized in that: actuating mechanism (1) is including installed part (11), casing (12), protecting crust (13) and mounting panel (16), the top of casing (12) and the bottom fixed mounting of installed part (11), through-hole (14) have been seted up to the bottom both ends symmetry of casing (12).

9. The quick pile extractor for the small bridge pile head of claim 8, wherein: the bottom fixedly connected with drive assembly (15) of protecting crust (13), two dwang (18) of both ends symmetry fixedly connected with of protecting crust (13), the one end of dwang (18) and the inner wall movable mounting of through-hole (14), the bottom of drive assembly (15) and the top fixed mounting of mounting panel (16), mounting hole (17) have been seted up to the top both ends symmetry of mounting panel (16).

10. A method for using a fast pile extractor for a small bridge pile head is characterized in that the fast pile extractor for the small bridge pile head of any one of claims 1 to 9 is used, and the method comprises the following steps:

s1, firstly, a driving mechanism (1), a pipe fitting (34) and hoisting equipment are installed, the hoisting equipment can move the driving mechanism (1) up and down, meanwhile, a driving motor (26) is controlled to be started in a wireless mode, the driving motor (26) drives a clamping block (24) and clamping rings (29) to move outwards through a driving rod (25), and the two clamping rings (29) are separated towards two sides;

s2, aligning the clamping mechanism (2) and the base mechanism (3) to the top of the pile head, enabling the hoisting equipment to move the pile extractor downwards to enable the base mechanism (3) to be pressed on the ground, and meanwhile controlling the rotating connecting rod (416) to rotate through the hoisting equipment and the pipe fitting (34) to enable the poking plate (417) to rotate inwards;

s3, at the moment, the top of the pile head reaches the middle of the two clamping rings (29), and at the moment, the clamping rings (29) are moved inwards through the driving motor (26) to clamp the pile head;

s4, starting the hydraulic drive (31) through the hoisting equipment, pulling the pile head upwards through the driving mechanism (1) and the clamping mechanism (2) by the hoisting equipment, assisting the pile head to be pulled upwards through the jacking rod (36) by the hydraulic drive (31), and when the jacking rod (36) reaches the highest position, hoisting the whole pile extractor upwards by the hoisting equipment, and completely pulling out the pile head.