A double-holding and double-pressing system for pile driver

Abstract

The present invention provides a double-holding and double-pressing system for a pile driver, comprising a column frame, an upper pile clamping box, a lower pile clamping box, at least two upper pile-pressing oil cylinders and at least two lower pile-pressing oil cylinders, the column frame is in a rectangular shape, the upper pile clamping box and the lower pile clamping box are arranged in parallel and spaced apart in the column frame, one end of the upper pile-pressing oil cylinder is connected to the column frame, and the other end is connected to and drives the upper pile clamping box to move, and one end of the lower pile-pressing oil cylinder is connected to the column frame, and the other end is connected to and drives the lower pile clamping box to move. The present invention realizes continuous pile pressing and pulling, does not require a crane to cooperate in hanging the pile, each device does not affect the installation space of the two pile clamping boxes, the movement of each device does not interfere with each other, and the overall structure is more compact.

Description

Technical Field

[0001] The invention relates to the technical field of pile driver equipment, in particular to a double-holding and double-pressing system for a pile driver. Background Art

[0002] Static pressure construction of precast piles is a new type of environmentally friendly pile foundation construction method that uses static pressure to steadily press precast piles into the foundation. At present, static pressure pile construction has been widely used in domestic pile foundation construction, and in addition to static pressure piles for precast piles, H-shaped steel piles, steel pipe piles and other special-shaped steel piles also generally use static pressure pile construction. Hydraulic static construction has the advantages of clean site, no noise, no vibration, no sewage, no smoke and dust, etc. It is suitable for operations in urban areas with special requirements for the environment, and the pile pressing speed is fast and the efficiency is high.

[0003] At present, with the widespread use of hydraulic static pile drivers in the construction of pipe-driven cast-in-place piles and pipe-driven compaction piles, the hydraulic static pile driver is used to quickly press the steel pipe piles into the foundation to form a hole, and then the steel pipe piles need to be quickly pulled out and then poured with concrete or plain concrete to form a pile. When using a traditional hydraulic static pile driver to press or pull out steel pipes, because there is only one pile clamp box and one pile driving system, the return time for pile pressing and pulling out is long, and pile pressing or pulling out cannot be done continuously, resulting in low construction efficiency. In particular, for pile pulling operations, a large crane is required to assist in lifting the steel pipe piles to prevent the pulled out steel pipes from falling into the pile hole again, which requires an increase in the investment in cranes, and requires the crane and pile driver to work together, which poses a safety hazard. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a double-holding and double-pressing system for a pile driver to realize continuous pile pressing and pulling. No crane is required to hold the pile, and each device does not affect the installation space of the two pile clamping boxes. The movement of each device does not interfere with each other, and the overall structure is more compact.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A double-holding and double-pressing system for a pile driver comprises a column frame, an upper pile clamping box, a lower pile clamping box, at least two upper pile-pressing cylinders and at least two lower pile-pressing cylinders. The column frame is in a rectangular shape. The upper pile clamping box and the lower pile clamping box are arranged in parallel and spaced apart in the column frame. One end of the upper pile-pressing cylinder is connected to the column frame, and the other end is connected to and drives the upper pile clamping box to move. One end of the lower pile-pressing cylinder is connected to the column frame, and the other end is connected to and drives the lower pile clamping box to move.

[0007] As a further improvement of the above technical solution:

[0008] The column frame includes four columns, two upper beams and two lower beams. The four columns are arranged in parallel and spaced apart to form four edges of a rectangular parallelepiped. The two upper beams are connected in parallel and spaced apart at the top of the column frame, and the two lower beams are connected in parallel and spaced apart at the middle of the column frame. The upper beams and the lower beams are skewed and perpendicular.

[0009] The two ends of an upper crossbeam are respectively connected to the tops of two of the columns, the two ends of another upper crossbeam are respectively connected to the tops of the other two columns, the two ends of a lower crossbeam are respectively connected to the middles of two of the columns, the two ends of another lower crossbeam are respectively connected to the middles of the other two columns, and the planes where the two lower crossbeams are located are parallel and spaced apart from the planes where the two upper crossbeams are located.

[0010] The column comprises a lower column and an upper column, the bottom end of the lower column is connected to the body of the pile driver, and the top end of the lower column is connected to the bottom end of the upper column.

[0011] The system includes two upper pile-pressing oil cylinders, which are respectively installed in the middle of two upper crossbeams, and the cylinder bodies of the upper pile-pressing oil cylinders are installed on the upper crossbeams. The piston rods of the upper pile-pressing oil cylinders face downward and are hinged to the upper pile clamping box, and the straight line where the piston rods of the upper pile-pressing oil cylinders are located is parallel to the column.

[0012] The two pile-pressing cylinders are respectively installed in the middle of the two lower beams, the cylinder bodies of the pile-pressing cylinders are installed on the lower beams, the piston rods of the pile-pressing cylinders face downward and are hinged to the lower pile clamping box, and the straight line where the piston rods of the pile-pressing cylinders are located is parallel to the columns.

[0013] The upper pile pressure cylinder passes through the upper crossbeam, and the lower pile pressure cylinder passes through the lower crossbeam.

[0014] A track group is arranged on each column, and the length direction of the track group is parallel to the length direction of the column. Four guide wheel groups are arranged on the upper pile clamp box, and the four guide wheel groups respectively contact the track groups on the four columns and roll along the track groups.

[0015] Each track group includes two parallel tracks, each track is parallel to the length direction of the column, the column is a rectangular parallelepiped, and the two tracks of each track group are respectively installed on two adjacent sides of the column, and the two adjacent sides of the column are closer to the center of the upper pile box than other sides.

[0016] Each guide wheel assembly includes at least two guide wheels and at least two guide wheel seats. The guide wheel seats are installed on the upper pile clamp box. Each guide wheel is rotatably installed on a guide wheel seat. The guide wheel contacts the track and rolls along a track. Each track has a guide wheel that matches it.

[0017] The beneficial effects of the present invention are as follows: the two pile clamping boxes and the pile clamping cylinders connected thereto, and the upper pile pressing cylinder and the lower pile pressing cylinder cooperating with the two pile clamping boxes form a double-embracing and double-pressing structure, thereby realizing continuous pile pressing and pulling, and no crane is required to hold the piles; the upper crossbeam and the lower crossbeam are arranged vertically in different planes, and the upper pile pressing cylinder and the lower pile pressing cylinder pass through the upper crossbeam and the lower crossbeam respectively, without affecting the installation space of the two pile clamping boxes, and the movement of each device does not interfere with each other, thereby reducing the height of the column frame and making the overall structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0021] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0022] A double-holding and double-pressing system for a pile driver, such as Figures 1-2 As shown, it includes a column frame, an upper pile clamping box 3, a lower pile clamping box 7, two upper pile pressing cylinders 1, two lower pile pressing cylinders 5, two groups of pile clamping cylinders 4, two working platforms 9 and two pull rods 10.

[0023] The column frame is a rectangular frame structure. Specifically, the column frame includes four columns, two upper beams 2 and two lower beams 6. The four columns are arranged in parallel and spaced apart to form four edges of a rectangular parallelepiped. Preferably, each column includes a lower column 8 and an upper column 11, and the bottom end of the lower column 8 is connected to the body of the pile driver. Further, the lower column 8 is welded to the body, and the top end of the lower column 8 and the bottom end of the upper column 11 are connected by a pin shaft, so that the lower column 8 and the upper column 11 can be disassembled and assembled, which is convenient for the installation and maintenance of the device. The lower column 8 and the upper column 11 are positioned by a conical pin positioning mechanism during installation to achieve accurate installation and connection. The lower column 8 and the upper column 11 are rectangular parallelepiped, preferably, a long rod-shaped rectangular parallelepiped, that is, a rectangular parallelepiped whose length is much greater than the width and thickness.

[0024] Two upper cross beams 2 are connected to the top of the columns, and the two ends of one upper cross beam 2 are respectively connected to the top of two of the columns, and the two ends of the other upper cross beam 2 are respectively connected to the top of the other two columns. Specifically, the two upper cross beams 2 are connected to the top of the upper columns 11, and the two ends of one upper cross beam 2 are respectively connected to the top of two of the upper columns 11, and the two ends of the other upper cross beam 2 are respectively connected to the top of the other two upper columns 11, so that the two upper cross beams 2 are arranged in parallel and spaced apart. The upper cross beam 2 and the upper column 11 are connected by a pin shaft to realize the detachable assembly and disassembly of the upper cross beam 2 and the upper column 11, and the upper cross beam 2 and the upper column 11 are positioned by a conical pin positioning mechanism when they are installed.

[0025] Two lower cross beams 6 are connected to the middle of the columns, two ends of one lower cross beam 6 are connected to the middle of two of the columns, and two ends of another lower cross beam 6 are connected to the middle of the other two columns. Specifically, two lower cross beams 6 are connected to the middle of the upper columns 11, two ends of one lower cross beam 6 are connected to the middle of two of the upper columns 11, and two ends of another lower cross beam 6 are connected to the middle of the other two upper columns 11, so that the two lower cross beams 6 are arranged in parallel and spaced apart. The plane where the two lower cross beams 6 are located is parallel and spaced apart from the plane where the two upper cross beams 2 are located, and the upper cross beams 2 and the lower cross beams 6 are perpendicular. In other words, the straight line where the upper cross beam 2 is located and the straight line where the lower cross beam 6 is located are two skew perpendicular straight lines.

[0026] The upper pile clamping box 3 and the lower pile clamping box 7 for clamping and loosening piles are arranged in parallel and spaced apart in the column frame. One end of the upper pile pressing cylinder 1 is connected to the column frame, and the other end is connected to and drives the upper pile clamping box 3 to move. One end of the lower pile pressing cylinder 5 is connected to the column frame, and the other end is connected to and drives the lower pile clamping box 7 to move.

[0027] The two upper pile-pressing cylinders 1 are respectively installed at the middle of the two upper cross beams 2. Specifically, the cylinder body of the upper pile-pressing cylinder 1 is installed on the upper cross beam 2, and the piston rod of the upper pile-pressing cylinder 1 faces downward and is hinged to the upper pile clamp box 3. The straight line where the piston rod of the upper pile-pressing cylinder 1 is located is parallel to the column. Specifically, the upper pile-pressing cylinder 1 passes through the upper cross beam 2 to make the overall device more compact.

[0028] The two pile pressing cylinders 5 are respectively installed in the middle of the two lower beams 6. Specifically, the cylinder bodies of the pile pressing cylinders 5 are installed on the lower beams 6, and the piston rods of the pile pressing cylinders 5 face downward and are hinged to the lower pile clamping box 7. The straight line where the piston rods of the pile pressing cylinders 5 are located is parallel to the column. The pile pressing cylinders 5 pass through the lower beams 6.

[0029] The pile to be operated passes through the upper pile clamping box 3 and the lower pile clamping box 7. The two groups of pile clamping cylinders 4 are respectively connected to and drive the upper pile clamping box 3 and the lower pile clamping box 7 to clamp or loosen the pile.

[0030] A movable pair is formed between the upper pile clamp box 3 and / or the lower pile clamp box 7 and the column. The upper pile clamp box 3 and the lower pile clamp box 7 adopt the pile clamp box structure in the prior art. Preferably, the patent technical solution disclosed by the applicant (application number: 2013104737084) is adopted. A track group is provided on each column, and the length direction of the track group is parallel to the length direction of the column. Each track group includes two parallel tracks, and each track is parallel to the length direction of the column. The two tracks of each track group are respectively installed on two adjacent sides of the column, and the two adjacent sides of the column are closer to the center of the upper pile clamp box 3 than the other sides. Specifically, each track includes an upper track and a lower track, and the upper track and the lower track do not overlap and are located on the same straight line. The upper track is arranged on the upper column 11, and the lower track is arranged on the lower column 8. The two upper tracks of each track group are respectively installed on two adjacent sides of the upper column 11, and the two adjacent sides of the upper column 11 are closer to the upper pile clamp box 3 than the other sides. Similarly, the two lower rails of each rail group are respectively installed on two adjacent side surfaces of the lower column 8, and the two adjacent side surfaces of the lower column 8 are closer to the lower pile box 7 than other side surfaces.

[0031] Four guide wheel groups are provided on the upper pile clamp box 3, and the four guide wheel groups are matched with the track groups on the four columns respectively. Each guide wheel group includes at least two guide wheels and at least two guide wheel seats, and the guide wheel seats are installed on the upper pile clamp box 3. Each guide wheel is rotatably installed on a guide wheel seat, and the guide wheel contacts the track and rolls along a track, and each track has a guide wheel matched with it.

[0032] The lower pile clamp box 7 is also provided with four guide wheel groups. The installation and matching method of the guide wheel groups is the same as that of the upper pile clamp box 3, which will not be repeated here.

[0033] The guide wheel assembly and the track assembly form a guide mechanism, so that the upper pile clamping box 3 and / or the lower pile clamping box 7 can move smoothly in a defined direction.

[0034] The two working platforms 9 are respectively located on two opposite sides of the rectangular column frame, and the working platforms 9 are platforms for operators to perform installation, maintenance, inspection and other operations.

[0035] The two tie rods 10 are respectively located on two opposite sides of the column frame of the cuboid, and the two tie rods 10 are respectively located on the same side as the two working platforms 9, and the tie rods 10 are located above the working platforms 9. The two ends of a tie rod 10 are respectively connected to an upper column 11. The function of the tie rod 10 is to adjust the distance between the two columns 11 when installing the upper beam 2, so as to facilitate the accurate installation of the upper beam 2.

[0036] The working principle of the present invention is as follows: it comprises two pile clamping boxes, an upper pile clamping box 3 and a lower pile clamping box 7, and an upper pile pressing oil cylinder 1 and a lower pile pressing oil cylinder 5 which cooperate therewith, so as to realize continuous pile pressing and pile pulling. The pile body to be constructed passes through the upper pile clamping box 3 and the lower pile clamping box 7. When pulling out the pile, the upper pile clamping box 3 clamps and holds the pile body tightly, the lower pile clamping box 7 releases the pile body, and the upper pile pressing oil cylinder 1 drives the upper pile clamping box 3 and the pile body to move upward. After the rising stroke of the upper pile pressing oil cylinder 1 is completed, the lower pile clamping box 7 clamps and holds the pile body tightly, the upper pile clamping box 3 releases the pile body, and the lower pile pressing oil cylinder 5 drives the lower pile clamping box 7 and the pile body to move upward, and at the same time, the upper pile pressing oil cylinder 1 drives the upper pile clamping box 3 to move down to the upper pile pressing oil cylinder 1 to complete the descending stroke. When the rising stroke of the lower pile pressing oil cylinder 5 is completed, the upper pile clamping box 3 clamps and holds the pile body tightly, and the lower pile clamping box 7 releases the pile body, and this is repeated to realize continuous pile pulling. When pressing piles, the upper pile clamping box 3 or the lower pile clamping box 7 is driven to move upward, that is, the upper pile clamping box 3 or the lower pile clamping box 7 clamps and holds the pile body during the descending stroke, and releases the pile body during the ascending stroke, thereby realizing continuous pile pressing.

[0037] It should be noted that the pile clamping cylinder 4 drives the upper pile clamping box 3 or the lower pile clamping box 7 connected thereto, so that the upper pile clamping box 3 and / or the lower pile clamping box 7 clamps and holds the pile body or releases the pile body.

[0038] Finally, it is necessary to explain here that the above embodiments are only used to further illustrate the technical solution of the present invention in detail and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by technicians in this field based on the above content of the present invention all fall within the scope of protection of the present invention.

Claims

1. A double-holding and double-pressing system for a pile driver, characterized in that: The utility model comprises a column frame, an upper pile clamping box (3), a lower pile clamping box (7), at least two upper pile pressing cylinders (1) and at least two lower pile pressing cylinders (5); the column frame is in a rectangular parallelepiped shape; the upper pile clamping box (3) and the lower pile clamping box (7) are arranged in parallel and spaced apart in the column frame; one end of the upper pile pressing cylinder (1) is connected to the column frame, and the other end is connected to and drives the upper pile clamping box (3) to move; one end of the lower pile pressing cylinder (5) is connected to the column frame, and the other end is connected to and drives the lower pile clamping box (7) to move; The column frame comprises four columns, two upper cross beams (2) and two lower cross beams (6); the four columns are arranged in parallel and spaced apart to form four edges of a rectangular parallelepiped; the two upper cross beams (2) are connected in parallel and spaced apart at the top of the column frame; the two lower cross beams (6) are connected in parallel and spaced apart at the middle of the column frame; the upper cross beams (2) and the lower cross beams (6) are skewed and perpendicular; The two ends of an upper crossbeam (2) are respectively connected to the tops of two of the columns, the two ends of another upper crossbeam (2) are respectively connected to the tops of the other two columns, the two ends of a lower crossbeam (6) are respectively connected to the middles of the two columns, the two ends of another lower crossbeam (6) are respectively connected to the middles of the other two columns, and the planes where the two lower crossbeams (6) are located are parallel and spaced from the planes where the two upper crossbeams (2) are located; The column comprises a lower column (8) and an upper column (11), the bottom end of the lower column (8) is connected to the body of the pile driver, and the top end of the lower column (8) is connected to the bottom end of the upper column (11).

2. The double-holding and double-pressing system for a pile driver according to claim 1, characterized in that: The system comprises two upper pile-pressing oil cylinders (1), which are respectively mounted at the middle of two upper cross beams (2), the cylinder bodies of the upper pile-pressing oil cylinders (1) are mounted on the upper cross beams (2), the piston rods of the upper pile-pressing oil cylinders (1) face downward and are hinged to the upper pile clamp box (3), and the straight line on which the piston rods of the upper pile-pressing oil cylinders (1) are located is parallel to the column.

3. The double-holding and double-pressing system for a pile driver according to claim 2, characterized in that: The two pile pressing cylinders (5) are respectively installed at the middle of the two lower beams (6). The cylinder bodies of the pile pressing cylinders (5) are installed on the lower beams (6). The piston rods of the pile pressing cylinders (5) face downward and are hinged to the lower pile clamping box (7). The straight line where the piston rods of the pile pressing cylinders (5) are located is parallel to the columns.

4. The double-holding and double-pressing system for a pile driver according to claim 3 is characterized in that: The upper pile-pressing oil cylinder (1) passes through the upper crossbeam (2), and the lower pile-pressing oil cylinder (5) passes through the lower crossbeam (6).

5. The double-holding and double-pressing system for a pile driver according to claim 1, characterized in that: Each column is provided with a track group, the length direction of the track group is parallel to the length direction of the column, and the upper pile clamp box (3) is provided with four guide wheel groups, which respectively contact the track groups on the four columns and roll along the track groups.

6. The double-holding and double-pressing system for a pile driver according to claim 5, characterized in that: Each track group comprises two parallel tracks, each track is parallel to the length direction of the column, the column is rectangular, and the two tracks of each track group are respectively installed on two adjacent side surfaces of the column, and the two adjacent side surfaces of the column are closer to the center of the upper pile clamp box (3) than other side surfaces.

7. The double-holding and double-pressing system for a pile driver according to claim 6, characterized in that: Each guide wheel assembly comprises at least two guide wheels and at least two guide wheel seats, the guide wheel seats are mounted on the upper pile clamp box (3), each guide wheel is rotatably mounted on a guide wheel seat, the guide wheel contacts a track and rolls along a track, and each track has a guide wheel matched therewith.

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