CN112281839A - Steering system for pile top supporting walking type movable piling platform and construction method - Google Patents
Steering system for pile top supporting walking type movable piling platform and construction method Download PDFInfo
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- CN112281839A CN112281839A CN202011136179.5A CN202011136179A CN112281839A CN 112281839 A CN112281839 A CN 112281839A CN 202011136179 A CN202011136179 A CN 202011136179A CN 112281839 A CN112281839 A CN 112281839A
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- piling platform
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
Abstract
The invention provides a steering system and a construction method for a pile top supporting walking type movable piling platform, wherein a plurality of pile caps are fixedly arranged at the bottom of a steering platform support, a lower turntable is arranged on the steering platform support, and an upper turntable is rotatably connected with the lower turntable; and a traction steel wire rope is also arranged at the edge of the upper rotary disk and used for driving the upper rotary disk to rotate. During construction: installing a pushing device on the pile foundation, and arranging a piling platform on the pushing device; hoisting the steering platform to the pile foundation at the position needing to be steered by using a hoisting device and fixing; moving the piling platform to the upper part of the steering platform by using a pushing device and dropping on an upper turntable of the steering platform; starting a traction hydraulic cylinder on the steering platform, and drawing the upper turntable to rotate relative to the lower turntable; through the steps, the steering of the piling platform is realized. The invention solves the problem that the existing piling platform is complicated in steering operation, and the steering operation can be completed without dismounting and mounting the piling platform again.
Description
Technical Field
The invention relates to the field of offshore pile foundation construction, in particular to a steering system for a pile top supporting walking type movable piling platform and a construction method.
Background
The pile top supporting walking type movable pile driving platform is a platform for offshore pile foundation construction, and the platform is moved by using a pushing positioning device based on a constructed pile foundation, for example, the pile driving platform and the construction method described in chinese patent documents CN105421454A, CN106320332A and CN 107653858 a. The platform solves the problem of difficult pile foundation construction in open sea surge areas, improves the construction efficiency and reduces the labor capacity of workers. However, the pile driving platform can only complete linear movement, and when the platform moves to a turning position in the construction of the L-shaped wharf pile foundations as shown in fig. 7-12, the pile driving platform needs to be detached to the shore, and then the pile driving platform needs to be assembled again on the pile foundations in the advancing direction of the platform, so that the platform can turn. This turn to the loaded down with trivial details consuming time of mode, and the platform is marine operation when tearing open, adorning, and the construction risk is very big.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a steering device and a construction method for a pile top supporting walking type movable piling platform, which can complete the steering operation of the piling platform at sea without dismantling and assembling again. In a preferred embodiment, sufficient safety can be ensured during the steering operation.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a steering system for supporting a walking type movable pile driving platform on a pile top is characterized in that a plurality of pile caps are fixedly arranged at the bottom of a steering platform support, a lower turntable is arranged on the steering platform support, and an upper turntable is rotatably connected with the lower turntable;
and a traction steel wire rope is also arranged at the edge of the upper rotary disk and used for driving the upper rotary disk to rotate.
In a preferred scheme, a plurality of supporting wheel boxes are arranged between the upper rotary disc and the lower rotary disc and are arranged along the circumference so as to reduce the friction between the upper rotary disc and the lower rotary disc.
In a preferred scheme, at least three pile caps are used and are fixedly arranged on the pile foundation.
In the preferred scheme, a traction hydraulic cylinder is further arranged on the steering platform support, the traction hydraulic cylinder is a through hydraulic cylinder, one end of a traction steel wire rope is fixedly connected with the edge of the upper turntable, and the other end of the traction steel wire rope penetrates through the traction hydraulic cylinder and is fixedly connected with the traction hydraulic cylinder;
the traction wire rope part is coiled on the edge of the upper rotary disk.
In a preferable scheme, a groove for accommodating a traction steel wire rope is arranged at the edge of the upper rotary disc.
In the preferred scheme, an inclination angle sensor is further arranged on the upper rotating disc and used for detecting the levelness of the upper rotating disc.
In the preferred scheme, a piling platform is further arranged, a lifting device is arranged on the piling platform, and the piling platform is positioned on the upper turntable;
the pile driving platform is also provided with a balance weight, and the balance weight is used for keeping the whole pile driving platform balanced when the pile driving platform rotates.
In the preferred scheme, a plurality of pushing devices are further arranged at the top of the pile foundation and used for pushing the piling platform to the position above an upper rotary disc of the steering platform;
the structure of the pushing device is as follows: the pushing base is fixedly connected with the top of the pile foundation, supporting seats are arranged on two sides of the pushing base, and arc-shaped base plates for supporting the piling platform and automatically leveling are arranged on the supporting seats;
the jacking system comprises a jacking oil cylinder, a first sliding seat, a second sliding seat, a third sliding seat, a fourth sliding seat, a fifth sliding seat, a sixth sliding;
the height of the jacking oil cylinder when the jacking oil cylinder is lifted is higher than the top of the supporting seat, and the height of the jacking oil cylinder when the jacking oil cylinder is lowered is lower than the top of the supporting seat;
the pushing bases are connected with each other through a pull rod.
A construction method adopting the steering system for supporting the walking type movable pile driving platform on the pile top comprises the following steps:
s1, installing a pushing device on the pile foundation, and arranging a piling platform on the pushing device;
s2, hoisting the steering platform to the pile foundation at the position needing to be steered by using the hoisting device and fixing;
s3, moving the piling platform to the upper part of the steering platform by using a pushing device and dropping on an upper turntable of the steering platform;
s4, starting a traction hydraulic cylinder on the steering platform, and drawing the upper turntable to rotate relative to the lower turntable;
through the steps, the steering of the piling platform is realized.
In a preferable scheme, in step S2, a cushion block is arranged at the top of the supporting seat, so that the top elevation of the upper turntable is lower than the top elevation of the supporting seat plus the cushion block, and the piling platform can move to the upper turntable of the steering platform;
in step S3, the crane and/or counterweight is moved to a position where the pile driving platform is kept horizontal to keep the pile driving platform balanced during rotation.
The invention provides a steering system and a construction method for a pile top supporting walking type movable pile driving platform. In a preferred scheme, the inclination angle sensor is arranged to be capable of ensuring that the whole piling platform is kept horizontal in the steering process by measuring the levelness of the upper rotating disc, namely ensuring that the steering platform is positioned at the gravity center of the piling platform. The lifting device can be matched with the balance weight besides lifting and installing the steering platform, and is used for adjusting the gravity center of the piling platform.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a front view schematically showing the overall structure of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a top view of the steering platform of the present invention.
Fig. 4 is a front view of the steering platform of the present invention.
FIG. 5 is a top view of the pusher of the present invention.
FIG. 6 is a front view of the pusher of the present invention.
Fig. 7 is a first construction flowchart of the present invention.
Fig. 8 is a second construction flowchart of the present invention.
Fig. 9 is a third construction flowchart of the present invention.
FIG. 10 is a fourth construction flowchart of the present invention.
Fig. 11 is a fifth construction flowchart of the present invention.
Fig. 12 is a sixth construction flowchart of the present invention.
In the figure: the pile driving device comprises a pile driving platform 1, a pile driving guide rail 11, a jacking device 2, a jacking base 21, a supporting seat 22, a jacking oil cylinder 23, a first sliding seat 24, a second sliding seat 25, a jacking oil cylinder 26, a deviation rectifying oil cylinder 27, an adjusting screw 28, a pull rod 29, a guide slide rail 20, a pile foundation 3, a guide frame 4, a hoisting device 5, a balance weight 6, a steering platform 7, a steering platform support 71, a pile cap 72, a traction steel wire rope 73, an upper rotary disc 74, a lower rotary disc 75, a supporting wheel box 76, a traction hydraulic cylinder 77, a protection blocking edge 78, an inclination angle sensor 79, a cushion block 8 and a wharf 9.
Detailed Description
Example 1:
as shown in fig. 1-4, in a steering system for supporting a walking type mobile pile driving platform on a pile top, a plurality of pile caps 72 are fixedly arranged at the bottom of a steering platform support 71, the pile caps 72 are fixedly arranged at the top of a well-laid pile foundation 3, a lower turntable 75 is arranged on the steering platform support 71, and an upper turntable 74 is rotatably connected with the lower turntable 75;
and a traction steel wire rope 73 is also arranged at the edge of the upper rotary table 74 and is used for drawing the upper rotary table 74 to rotate. Thereby, the structure is used for bearing the rotation of the piling platform 1.
Preferably, as shown in fig. 3 and 4, a plurality of supporting wheel boxes 76 are arranged between the upper rotary disk 74 and the lower rotary disk 75, the supporting wheel boxes 76 are arranged along the circumference, and the supporting wheel boxes 76 are arranged in annular sliding wheel grooves of the upper rotary disk 74 and the lower rotary disk 75 so as to reduce the friction between the upper rotary disk 74 and the lower rotary disk 75. The outer edge of the upper rotary disc 74 is also provided with a downward extending boss for wrapping the edge of the lower rotary disc 75 to play a role in limiting and protecting and avoid the upper rotary disc 74 and the lower rotary disc 75 from being separated.
In a preferred embodiment, as shown in fig. 3, at least three pile caps 72 are provided, optionally, four pile caps 72 are provided, the four pile caps 72 are rectangular, the pile caps 72 are connected with each other by a steering platform support 71, and the pile caps 72 are used for being fixedly mounted on the pile foundation 3.
Preferably, as shown in fig. 3, a traction hydraulic cylinder 77 is further disposed on the steering platform support 71, the traction hydraulic cylinder 77 is a through hydraulic cylinder, one end of the traction wire rope 73 is fixedly connected to the edge of the upper turntable 74, and the other end of the traction wire rope 73 passes through the traction hydraulic cylinder 77 and is fixedly connected to the traction hydraulic cylinder 77; with this structure, the upper turn table 74 is rotated by the tow rope 73 by the tow hydraulic cylinder 77 fixed to the platform support 71. Preferably, the traction hydraulic cylinder 77 and the traction wire rope 73 are symmetrically arranged in two to achieve traction force balance.
The portion of the pull cable 73 is wound around the edge of the upper turntable 74. Normally the angle at which the haul cable 73 is wound around the upper turntable 74 exceeds 90. With this structure, the traction wire rope 73 can obtain a large moment arm.
In a preferred embodiment, as shown in fig. 4, a groove is provided at the edge of the upper turntable 74 for receiving the traction cable 73. With this structure, the traction cable 73 is prevented from coming off the edge of the upper turn plate 74.
In the preferred embodiment 3, an inclination sensor 79 is further provided on the upper turntable 74, and the inclination sensor 79 is used for detecting the levelness of the upper turntable 74. The preferred tilt angle sensor 79 is a linear tilt angle sensor 79, which is respectively located on two mutually perpendicular steel beams on the upper turntable 74, so as to ensure that the stress of the upper turntable 74 is uniform, and avoid the safety risk of overturning caused by uneven stress.
In a preferred scheme, as shown in fig. 1 and 2, a piling platform 1 is further provided, a hoisting device 5 is arranged on the piling platform 1, the hoisting device 5 in this example is a crawler-type self-walking hoisting device 5, the crawler-type self-walking hoisting device can walk on the piling platform 1 for hoisting and adjusting the center of gravity, and the piling platform 1 is positioned on an upper turntable 74; preferably, the pile driving platform 1 is provided with a guide frame 4 at one side thereof for guiding pile driving construction, and a pile driving guide rail 11 at the pile driving platform 1 for sliding the guide frame 4 along the pile driving guide rail 11.
Preferably, as shown in fig. 1, the piling platform 1 is also provided with a counterweight 6, and the counterweight 6 is used for keeping the whole piling platform 1 balanced when the piling platform 1 rotates.
In a preferred scheme, as shown in fig. 1, 2, 5 and 6, a plurality of thrusters 2 are further arranged at the top of the pile foundation 3, and the thrusters 2 are used for thrusting the piling platform 1 to be above an upper rotating disc 74 of the steering platform;
the structure of the pushing device 2 is as follows: the pushing base 21 is fixedly connected with the top of the pile foundation 3, two sides of the pushing base 21 are provided with supporting seats 22, and the supporting seats 22 are provided with arc-shaped base plates which are used for supporting the piling platform 1 and are automatically leveled; the arc backing plate structure of setting has an arcwall face, can slide along the arcwall face between arc backing plate and the supporting seat 22, can make arc backing plate self leveling to it is reliable to make supporting seat 22 and pile platform 1 contact, avoids producing stress concentration.
The jacking system comprises a jacking base 21, a first sliding seat 24, a second sliding seat 25, a deviation correcting oil cylinder 27, a jacking oil cylinder 26, an arc-shaped base plate, wherein the jacking oil cylinder 23 is horizontally arranged, the axis of the jacking oil cylinder 23 is perpendicular to the axis of the deviation correcting oil cylinder 27, the jacking oil cylinder 26 is vertically arranged, the end of the jacking oil cylinder 26 is provided with the arc-shaped base plate which is used for supporting the piling platform 1 and is automatically leveled, and the function of the arc-shaped base plate is the same as that of the arc-shaped base plate on a supporting seat 22;
the height of the jacking oil cylinder 26 when rising is higher than the top of the supporting seat 22, and the height of the jacking oil cylinder 26 when falling is lower than the top of the supporting seat 22; with the structure, the jacking oil cylinder 23 is matched to complete jacking of the piling platform 1. Correspondingly, a cross beam for supporting in the walking direction is provided at the bottom of the pile driving platform 1, so that both the jacking cylinder 26 and the support base 22 can be supported on the cross beam.
The pushing bases 21 are connected with each other through a pull rod 29. The pushing device 2 is combined with the steering platform 7, so that the combination of translation and steering functions is realized.
Example 2:
on the basis of embodiment 1, as shown in fig. 7 to 12, a construction method using the above-mentioned steering system for pile top supporting walking type mobile pile driving platform includes the following steps:
s1, after the pile driving platform 1 is constructed with the L-shaped wharf 9 and the steel pipe pile on the land side, the initial position is as shown in fig. 7, and the pusher 2 is operated to retract the pile driving platform 1 to the position shown in fig. 8. Giving way to the location where the steering platform 7 is mounted. The pushing steps of the pushing device 2 are as follows: the pile driving platform 1 is initially supported on the top of the supporting seat 22 of the jacking device 2, the jacking cylinder 26 jacks to separate the pile driving platform 1 from the jacking device 2, the jacking cylinder 23 acts to displace the first slide seat 24 to drive the pile driving platform 1 to displace a certain distance relative to the supporting seat 22, and if the deviation needs to be corrected, the deviation correcting cylinder 27 is started to enable the second slide seat 25 to displace relative to the first slide seat 24. The jacking cylinder 26 falls down to enable the piling platform 1 to fall on the top of the supporting seat 22, the first sliding seat 24 and the second sliding seat 25 are reset to drive the jacking cylinder 26 to reset, then the jacking cylinder 26 jacks again to enable the piling platform 1 to be separated from the jacking device 2, and the steps are repeated cyclically to realize displacement of the jacking piling platform 1.
Installing a pushing device 2 on the top of a pile foundation 3 by using hoisting equipment on a caisson, and arranging a piling platform 1 on the pushing device 2; the thrusters 2 are arranged at corresponding positions in the walking direction and the steering direction of the piling platform 1.
S2, hoisting the steering platform 7 to the pile foundation 3 at the position needing to be steered by using the hoisting device 5 and fixing; the hoisting means 5 in this example is a crawler-type self-moving hoisting means 5.
In a preferred scheme, a cushion block 8 is arranged at the top of the supporting seat 22, the supporting seat 22 is raised by 100mm integrally, and the top elevation of the upper turntable 74 is lower than that of the supporting seat 22 plus the cushion block 8, so that the piling platform 1 can move onto the upper turntable 74 of the steering platform 7;
after the installation is completed, the whole height of the supporting seat 22 with the cushion block 8 is 50mm higher than the top of the steering platform 7, and after the cushion block 8 is taken down, the top height of the supporting seat 22 is 50mm lower than the top of the steering platform 7.
S3, moving the piling platform 1 to the position above the steering platform 7 by using the pushing device 2, and dropping the piling platform on the upper rotary disc 74 of the steering platform 7;
in a preferred solution, the lifting means 5 and/or the counterweight 6 are moved to a position where the pile driving platform 1 is kept horizontal, so that the pile driving platform 1 is balanced during rotation. Preferably, the lifting means 5 is moved above the steering platform 7.
S4, starting a traction hydraulic cylinder 77 on the steering platform 7 to pull the upper turntable 74 to rotate relative to the lower turntable 75; further preferably, a pressure sensor is provided at a position where the traction wire rope 73 is connected to the traction hydraulic cylinder 77, so as to prevent the deformation of the pile foundation due to the traction pressure being greater than the bending strength of the pile foundation.
After the pile driving platform 1 rotates to the right position, the pile driving platform 1 falls to the top of the pushing device 2, and the L-shaped wharf 9 is constructed and leans to the sea side steel pipe pile.
Through the steps, the steering construction of the piling platform 1 is realized.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. A steering system for a pile top supporting walking type movable piling platform is characterized in that: a plurality of pile caps (72) are fixedly arranged at the bottom of the steering platform support (71), a lower turntable (75) is arranged on the steering platform support (71), and an upper turntable (74) is rotatably connected with the lower turntable (75);
and a traction steel wire rope (73) is also arranged at the edge of the upper turntable (74) and is used for drawing the upper turntable (74) to rotate.
2. The steering system for a pile-top supported walking mobile piling platform of claim 1, wherein: a plurality of supporting wheel boxes (76) are arranged between the upper rotating disk (74) and the lower rotating disk (75), and the supporting wheel boxes (76) are arranged along the circumference to reduce the friction between the upper rotating disk (74) and the lower rotating disk (75).
3. The steering system for a pile-top supported walking mobile piling platform of claim 1, wherein: the pile caps (72) are at least three, and the pile caps (72) are fixedly arranged on the pile foundation (3).
4. The steering system for a pile-top supported walking mobile piling platform of claim 1, wherein: a traction hydraulic cylinder (77) is further arranged on the steering platform support (71), the traction hydraulic cylinder (77) is a through hydraulic cylinder, one end of a traction steel wire rope (73) is fixedly connected with the edge of the upper turntable (74), and the other end of the traction steel wire rope (73) penetrates through the traction hydraulic cylinder (77) to be fixedly connected with the traction hydraulic cylinder (77);
the traction cable (73) is partially wound around the edge of the upper turntable (74).
5. The steering system for a pile-top supported walking mobile piling platform of claim 1, wherein: the edge of the upper rotary disc (74) is provided with a groove for accommodating a traction steel wire rope (73).
6. The steering system for a pile-top supported walking mobile piling platform of claim 1, wherein: an inclination angle sensor (79) is also arranged on the upper rotating disc (74), and the inclination angle sensor (79) is used for detecting the levelness of the upper rotating disc (74).
7. The steering system for a pile-top supported walking mobile piling platform of claim 1, wherein: the pile driving device is characterized by also comprising a pile driving platform (1), wherein a hoisting device (5) is arranged on the pile driving platform (1), and the pile driving platform (1) is positioned on the upper turntable (74);
the piling platform (1) is also provided with a counterweight (6), and the counterweight (6) is used for keeping the whole piling platform (1) balanced when the piling platform (1) rotates.
8. The steering system for a pile-top supported walking mobile piling platform of claim 7, wherein: the top of the pile foundation (3) is also provided with a plurality of pushing devices (2), and the pushing devices (2) are used for pushing the piling platform (1) to the position above an upper turntable (74) of the steering platform;
the structure of the pushing device (2) is as follows: the pushing base (21) is fixedly connected with the top of the pile foundation (3), two sides of the pushing base (21) are provided with supporting seats (22), and the supporting seats (22) are provided with arc-shaped base plates which are used for supporting the piling platform (1) and are automatically leveled;
the jacking system comprises a jacking base (21), a first sliding seat (24), a jacking oil cylinder (23) which is horizontally arranged, a second sliding seat (25) which is slidably connected with the first sliding seat (24), a deviation rectifying oil cylinder (27) which is horizontally arranged, a jacking oil cylinder (26) which is vertically arranged, and an arc-shaped base plate which is used for supporting a piling platform (1) and is automatically leveled, wherein the jacking oil cylinder (23) is arranged between the jacking base (21) and the first sliding seat (24), the jacking oil cylinder (27) is arranged between the second sliding seat (25) and the first sliding seat (24), the axial lines of the jacking oil cylinder (23) and the deviation rectifying oil cylinder (27) are mutually perpendicular, the jacking oil cylinder (26) is arranged on the second sliding;
the height of the jacking oil cylinder (26) when rising is higher than the top of the supporting seat (22), and the height of the jacking oil cylinder (26) when falling is lower than the top of the supporting seat (22);
the pushing bases (21) are connected with each other through a pull rod (29).
9. A construction method using the steering system for pile top supported walking type mobile pile driving platform according to any one of claims 1 to 9, characterized by comprising the steps of:
s1, installing a pushing device (2) on the pile foundation (3), and arranging a piling platform (1) on the pushing device (2);
s2, hoisting the steering platform (7) to the pile foundation (3) at the position needing to be steered by using the hoisting device and fixing;
s3, moving the piling platform (1) to the position above the steering platform (7) by using the pushing device (2) and dropping on the upper rotary disc (74) of the steering platform (7);
s4, starting a traction hydraulic cylinder (77) on the steering platform (7), and drawing the upper turntable (74) to rotate relative to the lower turntable (75);
through the steps, the steering of the piling platform (1) is realized.
10. The construction method of a steering system for a pile-top supported walking mobile piling platform of claim 9, wherein:
in step S2, a cushion block (8) is arranged at the top of the supporting seat (22), and the top elevation of the upper rotating disc (74) is lower than the top elevation of the supporting seat (22) plus the cushion block (8), so that the piling platform (1) can move onto the upper rotating disc (74) of the steering platform (7);
in step S3, the crane (5) and/or counterweight (6) are moved to a position where the pile driving platform (1) is kept horizontal, so that the pile driving platform (1) is kept balanced during rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136179.5A CN112281839B (en) | 2020-10-22 | 2020-10-22 | Steering system for pile top supporting walking type movable piling platform and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136179.5A CN112281839B (en) | 2020-10-22 | 2020-10-22 | Steering system for pile top supporting walking type movable piling platform and construction method |
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| CN112281839A true CN112281839A (en) | 2021-01-29 |
| CN112281839B CN112281839B (en) | 2022-03-08 |
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Cited By (1)
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| CN114351673A (en) * | 2021-12-29 | 2022-04-15 | 中交武汉港湾工程设计研究院有限公司 | Steering control method for pile top supporting walking type movable piling platform |
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|---|---|
| CN112281839B (en) | 2022-03-08 |
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