CN209907390U

CN209907390U - Ground-assisted force-applying spiral pile-removing device

Info

Publication number: CN209907390U
Application number: CN201920079826.XU
Authority: CN
Inventors: 杨金辉; 杨晓彬; 董伟东; 周艳文; 冯三苟; 林丽华; 林成
Original assignee: FUJIAN DADI CONCRETE PILE Co Ltd
Current assignee: FUJIAN DADI CONCRETE PILE Co Ltd
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2020-01-07
Anticipated expiration: 2029-01-17

Abstract

The utility model relates to a ground-borrowing force-applying spiral pile-removing device, which comprises a pile body and a force-applying mechanism; the pile body comprises a steel outer cylinder and a concrete pile body, wherein the horizontal sections of the steel outer cylinder and the concrete pile body are annular; the length of the steel outer cylinder is smaller than that of the concrete pile body; the outer circumferential surface of the steel outer cylinder is provided with a first external thread along the length direction of the steel outer cylinder, and the inner circumferential surface of the steel outer cylinder is provided with an internal thread along the length direction of the steel outer cylinder; a second external thread matched with the internal thread is arranged on the outer circumferential surface of the concrete pile body; the cylindrical clamp clamps the steel outer cylinder from the upper end of the steel outer cylinder, drives the steel outer cylinder to rotate and screw into the ground, and the gravity device presses the steel outer cylinder downwards; does not need to beat and carry out static pressure, has good pile discharging effect, firm ground gripping, high speed, small damage to the tubular pile and good linearity.

Description

Ground-assisted force-applying spiral pile-removing device

Technical Field

The utility model relates to a borrow ground application of force spiral and descend a device belongs to building material and construction field.

Background

At the end of the last 60 th century, the hogftai bridge factory of the Ministry of railways began to produce pretensioned prestressed concrete pipe piles (abbreviated as PC pipe piles), which were mainly used for the foundation construction of railway bridge engineering; the post-tensioning prestressed concrete pipe pile was developed and produced in the 70 s. Since the 70 s, especially in the construction of Baoshan steel works in Shanghai, a large number of steel pipe piles introduced in Japan were used, which not only had high cost but also had poor durability. In order to meet the requirements of port construction development, the three navigation departments of the department of transportation in 1987 introduce a prestressed high-strength concrete pipe pile (PHC pipe pile for short) production line from Japan in a complete set, the main specification of the PHC pipe pile is from 600mm to 1000mm, in the later 80 s, Ningbo Zhedong cement product Limited company cooperates with related scientific research institutions, aiming at the characteristics of sludge weak geology in coastal areas of China, through the reconstruction of PC pipe piles, pretensioned prestressed concrete thin-wall pipe piles (PTC pipe piles for short) are developed, the main specifications of the PTC pipe piles are 300mm to 600mm, 1989 to 1992, the former national building administration Suzhou concrete cement product research institute and Panyu city Qiaofeng cement product Limited company according to the actual conditions of China, through the digestion and absorption of the introduced tubular pile production line, the domestic prestressed high-strength concrete tubular pile is developed autonomously, and the achievement is listed as a national key promotion project by the original construction department in 1993.

The existing tubular pile is generally used for placing the pile in a pile driving mode or a static pressure mode, the pile driving mode has large damage to the tubular pile and large noise, and the tubular pile is not suitable for urban construction; the static pressure mode needs long time, and the static pressure machine is bulky, and the transport is difficult.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a borrow ground application of force spiral pile setting device. The ground-borrowing force-applying spiral pile-discharging device utilizes a screw thread precession principle, does not need to be beaten and subjected to static pressure, and has the advantages of good pile-discharging effect, firm ground gripping, high speed, small damage to a tubular pile and good linearity.

The technical scheme of the utility model as follows:

the ground-based force application spiral pile-pulling device comprises a pile body and a force application mechanism; the pile body comprises a steel outer cylinder and a concrete pile body, wherein the horizontal sections of the steel outer cylinder and the concrete pile body are annular; the length of the steel outer cylinder is smaller than that of the concrete pile body; the outer circumferential surface of the steel outer cylinder is provided with a first external thread along the length direction of the steel outer cylinder, and the inner circumferential surface of the steel outer cylinder is provided with an internal thread along the length direction of the steel outer cylinder; a second external thread matched with the internal thread is arranged on the outer circumferential surface of the concrete pile body; the lower end surfaces of the steel outer cylinder and the concrete pile body are provided with notches; the cut section of the steel outer barrel is inclined outwards to guide soil outwards; the cut section of the concrete pile body is inclined inwards to guide soil to be discharged from a pile core cavity of the concrete pile body; the force application mechanism comprises a cylindrical clamp for clamping the steel outer cylinder, a holding tool for holding the concrete pile body tightly and a gravity device; the cylindrical fixture is characterized in that the steel outer barrel is clamped by the upper end of the steel outer barrel and drives the steel outer barrel to rotate and screw into the ground, and the steel outer barrel is pressed downwards by the gravity device.

Wherein the upper end surface of the steel outer cylinder is a continuous concave-convex ladder; the lower end of the cylindrical clamp is provided with an annular clamping groove; the bottom in the annular clamping groove is in a continuous concave-convex shape; the upper end of the steel outer cylinder is embedded into the annular clamping groove and is matched with the continuous concave-convex part at the bottom in the annular clamping groove; a gear ring is arranged on the outer circumferential surface of the cylindrical clamp, and a gear is meshed with the gear ring; the gear is driven by a motor to rotate through a torque amplifier and a telescopic driving rod in sequence; the holding tool comprises a surrounding body with a hoop outside the concrete pile body; the encircling body is fixed on an external fixed support through a plurality of connecting rods so as to prevent the concrete pile body from rotating; the fixed support is automatically lifted through a hydraulic system; the gravity device comprises a lower pressing body and a balancing weight which are annular as a whole; the lower pressing body is matched with the upper end of the cylindrical clamp; a plurality of metal rollers are uniformly arranged below the lower pressing body; the metal roller is abutted against the upper end face of the cylindrical fixture and passively rolls when the cylindrical fixture rotates.

The upper end and the lower end of the gear respectively extend outwards to form an annular body, and the upper annular body and the lower annular body respectively extend to the outer parts of the upper end and the lower end of the gear ring to be deviated up and down by the stop gears.

The utility model discloses following beneficial effect has:

1. the utility model discloses utilize the screw precession principle, need not to beat and static pressure, the effectual of lower stake is grabbed the ground jail firmly, and is fast, and the injury that the tubular pile receives is little, and tubular pile intensity is high.

2. The utility model discloses utilize the steel urceolus that has interior external screw thread at first screw in underground, because the entity sectional area of steel urceolus is little, consequently the resistance of screw in underground is little.

3. The utility model discloses utilize screw in underground steel urceolus as supporting and tractor, a screw thread is for drawing, use the locking tool to hold tightly the concrete pile body and make it not rotate, and drive steel urceolus antiport through the cylindric anchor clamps, restrict the axial displacement of steel urceolus simultaneously, therefore, axial displacement nevertheless can rotate about the steel urceolus restriction, the concrete pile body restriction rotates axial displacement about nevertheless can, both are screw-thread fit again, consequently, the rotation of steel urceolus will turn into the upper and lower axial displacement of the concrete pile body, make the concrete pile body squeeze into the underground with this kind of method, need not to beat and can realize stabilizing with traditional static pressure, quick lower stake.

4. The utility model discloses the underground is all stayed with the concrete pile body to last steel urceolus, and wherein the steel urceolus is located concrete pile body upper portion periphery, so, can make the concrete pile body obtain the support of steel urceolus, and is difficult for inclining, whole pile driving in-process, the guide of concrete pile body steel urceolus, the guarantee that its vertical degree can be fine.

5. The utility model discloses a suitable pile extension ware can be regarded as to the steel urceolus, and in two upper and lower concrete pile bodies screw in steel urceolus simultaneously, can realize the pile extension, the pile extension mode is simple, fast, pile extension is effectual, and is firm reliable.

Drawings

FIG. 1 is a schematic structural view of a steel outer cylinder of the present invention;

fig. 2 is a schematic structural view of the concrete pile body of the present invention;

FIG. 3 is a schematic view illustrating the steel outer cylinder of the present invention being screwed into the ground;

fig. 4 is a schematic view of the concrete pile body screwed into the ground through the steel outer cylinder.

The reference numbers in the figures denote:

the steel outer cylinder is 1, the steel outer cylinder is 11, the first external thread is 11, the internal thread is 12, the concrete pile body is 2, the second external thread is 21, the cylindrical clamp is 31, the annular clamping groove is 311, the gear ring is 312, the gear is 313, the annular body is 314, the motor is 315, the torque amplifier is 316, the driving rod is 317, the clamp is 32, the encircling body is 321, the connecting rod is 322, the fixing support is 323, the gravity device is 33, the pressing body is 331, the metal roller is 332, and the balancing weight is 333.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 4, the pile driving device comprises a pile body and a force application mechanism; the pile body comprises a steel outer cylinder 1 and a concrete pile body 2, wherein the horizontal sections of the steel outer cylinder and the concrete pile body are annular; the length of the steel outer cylinder 1 is less than that of the concrete pile body 2; the outer circumference of the steel outer cylinder 1 is provided with a first external thread 11 along the length direction, and the inner circumference is provided with an internal thread 12 along the length direction; the outer circumferential surface of the concrete pile body 2 is provided with a second external thread 21 matched with the internal thread 12; the lower end surfaces of the steel outer cylinder 1 and the concrete pile body 2 are both provided with notches; the cut section of the steel outer barrel 1 is inclined outwards to guide soil outwards; the cut section of the concrete pile body 2 is inclined inwards to guide soil to be discharged from the pile core cavity of the concrete pile body 2; the force application mechanism comprises a cylindrical clamp 31 for clamping the steel outer cylinder 1, a holding tool 32 for holding the concrete pile body 2 tightly and a gravity device 33; the cylindrical fixture 31 clamps the steel outer cylinder 1 from the upper end of the steel outer cylinder 1, drives the steel outer cylinder 1 to rotate and screw into the ground, and the gravity device 33 presses the steel outer cylinder 1 downwards.

Furthermore, the upper end surface of the steel outer cylinder 1 is a continuous concave-convex step; the lower end of the cylindrical clamp 31 is provided with an annular clamping groove 311; the bottom in the annular clamping groove 311 is in a continuous concave-convex shape; the upper end of the steel outer cylinder 1 is embedded into the annular clamping groove 311 and is matched with the continuous concave-convex part at the bottom in the annular clamping groove 311; the outer circumferential surface of the cylindrical clamp 31 is provided with a gear ring 312, and a gear 313 is meshed with the gear ring 312; the gear 313 is driven by a motor 315 to rotate through a torque amplifier 316 and a telescopic driving rod 317 in sequence; the holding tool 32 comprises a holding body 321 which is hooped outside the concrete pile body 2; the encircling body 321 is fixed on an external fixing bracket 323 through a plurality of connecting rods 322 to prevent the concrete pile body 2 from rotating; the fixed support 323 automatically rises and falls through a hydraulic system; the gravity device 33 comprises a lower pressing body 331 and a balancing weight 333 which are annular as a whole; the lower pressing body 331 is matched with the upper end of the cylindrical clamp 31; a plurality of metal rollers 332 are uniformly arranged below the lower pressing body 331; the metal roller 332 abuts against the upper end surface of the barrel jig 31 and rolls passively when the barrel jig 31 rotates.

Furthermore, the upper and lower ends of the gear 313 extend outward to form an annular body 314, and the upper and lower annular bodies 314 extend outward to the upper and lower ends of the ring gear 312 to stop the gear 313 from shifting up and down.

The pile driving method adopting the pile driving device comprises the following steps:

the method comprises the following steps: referring to fig. 3, the steel outer cylinder 1 is vertically placed at a piling position, a cylindrical fixture 31 is used for clamping a first steel outer cylinder 1, a motor 315 sequentially passes through a torque amplifier 316 and a driving rod 317 to drive a gear ring 313 to rotate, the gear 313 drives a gear ring 312 to rotate, the gear 312 drives the cylindrical fixture 31 to rotate, the cylindrical fixture 31 drives the steel outer cylinder 1 to rotate, and then the first steel outer cylinder is screwed into the ground under the combined action of a first external thread 11, an internal thread 12 and a gravity device 33;

step two: referring to fig. 4, the concrete pile body 2 is lifted and erected and inserted into the steel outer cylinder 1, the holding tool 32 holds the concrete pile body 2 tightly to prevent the concrete pile body from rotating, the steel outer cylinder 1 is driven by the motor 315 to rotate reversely, and the steel outer cylinder 1 cannot be screwed out but only can rotate because the steel outer cylinder 1 is pressed down by the gravity device 33 through the cylindrical clamp 31; the steel outer cylinder 1 is in threaded fit with the concrete pile body 2 at the moment, and the steel outer cylinder and the concrete pile body 2 rotate relatively, so that the concrete pile body 2 is passively screwed into the steel outer cylinder 1, the concrete pile body 2 continuously moves downwards to squeeze soil, and part of the soil is discharged from a pile core cavity of the concrete pile body 2; the concrete pile body 2 can be continuously moved down to the designed depth.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Borrow ground application of force spiral pile setting device, its characterized in that: comprises a pile body and a force application mechanism; the pile body comprises a steel outer cylinder (1) and a concrete pile body (2), wherein the horizontal sections of the steel outer cylinder and the concrete pile body are annular; the length of the steel outer cylinder (1) is less than that of the concrete pile body (2); the outer circumferential surface of the steel outer cylinder (1) is provided with a first external thread (11) along the length direction, and the inner circumferential surface of the steel outer cylinder is provided with an internal thread (12) along the length direction; a second external thread (21) matched with the internal thread (12) is arranged on the outer circumferential surface of the concrete pile body (2); the lower end surfaces of the steel outer cylinder (1) and the concrete pile body (2) are provided with notches; the cut section of the steel outer cylinder (1) is inclined outwards to guide soil outwards; the cut section of the concrete pile body (2) is inclined inwards to guide soil to be discharged from the pile core cavity of the concrete pile body (2); the force application mechanism comprises a cylindrical clamp (31) for clamping the steel outer cylinder (1), a holding tool (32) for holding the concrete pile body (2) tightly and a gravity device (33); the cylindrical clamp (31) is formed by clamping the upper end of a steel outer cylinder (1), the steel outer cylinder (1) is driven to rotate and screw into the ground, and the steel outer cylinder (1) is pressed down by a gravity device (33).

2. A ground-engaging, spiral-driven pile driver as defined in claim 1, wherein: the upper end surface of the steel outer cylinder (1) is a continuous concave-convex ladder; the lower end of the cylindrical clamp (31) is provided with an annular clamping groove (311); the inner bottom of the annular clamping groove (311) is in a continuous concave-convex shape; the upper end of the steel outer cylinder (1) is embedded into the annular clamping groove (311) and is matched with the continuous concave-convex part at the bottom in the annular clamping groove (311); the outer circumferential surface of the cylindrical clamp (31) is provided with a gear ring (312), and a gear (313) is meshed with the gear ring (312); the gear (313) is driven to rotate by a motor (315) through a torque amplifier (316) and a telescopic driving rod (317) in sequence; the holding tool (32) comprises a hoop body (321) which is hooped outside the concrete pile body (2); the encircling body (321) is fixed on an external fixing support (323) through a plurality of connecting rods (322) to prevent the concrete pile body (2) from rotating; the fixed support (323) is automatically lifted through a hydraulic system; the gravity device (33) comprises a pressing body (331) and a balancing weight (333) which are annular as a whole; the lower pressing body (331) is matched with the upper end of the cylindrical clamp (31); a plurality of metal rollers (332) are uniformly arranged below the lower pressing body (331); the metal roller (332) abuts against the upper end face of the cylindrical clamp (31) and rolls passively when the cylindrical clamp (31) rotates.

3. A ground-engaging, spiral-driven pile driver as defined in claim 2, wherein: the upper end and the lower end of the gear (313) extend outwards to form an annular body (314), and the upper annular body and the lower annular body (314) extend to the outer parts of the upper end and the lower end of the gear ring (312) respectively to shift up and down by the stop gear (313).