Positioning device for lowering large-tonnage pile foundation steel casing on water
By designing a down-positioning and positioning device for steel shields on water large tonnage pile foundations, the guide frame and lifting system are used to achieve accurate down-down of the steel shields, and the verticality is ensured through the corrected jack and sensor, the problems of poor down-down accuracy and long construction period in the existing technology are solved, and efficient and accurate down-down of the steel shields are achieved.
Patent Information
- Application Number
- CN202421535593.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-01
AI Technical Summary
In the construction of deep water high pile bearings in the reservoir area, it is difficult to effectively position and lower the tonnage ultra-long steel casing, resulting in a long construction period, poor positioning accuracy, and greatly affected by environmental and hydrological conditions.
A water large tonnage pile-based steel casing lowering positioning device is designed, including a guide frame and a lifting system. The guide frame is used to guide the steel casing in the vertical direction. The lifting system realizes the lowering of the steel casing through pulley sets, ropes and hoists, and ensures the verticality of the steel casing through a correction jack and a sensor.
This device can save investment in large-scale lifting equipment, reduce construction period, improve the installation accuracy and decentralization efficiency of steel casings, and is suitable for the construction of large-tonnage ultra-long steel casings.
Smart Images
Figure CN222730543U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of green bridge construction, in particular to a positioning device for lowering a steel casing of a large-tonnage pile foundation on water. Background Art
[0002] For the construction of deep-water high-pile caps in the reservoir area, steel box cofferdams are often used as water retaining structures for construction, that is, the steel cofferdam is assembled as a whole in the assembly yard on the shore, and then transported to the bridge location by water transportation. The cofferdam is used as a drilling platform and cap water retaining structure, and then the pile foundation construction is carried out. During the pile foundation construction, it is necessary to first lower and insert the pile foundation steel casing to prevent the drilling of pile foundations in the reservoir area from collapsing and water seepage. However, at present, the construction of steel casings in the reservoir area mostly relies on external lifting equipment, the lifting weight is limited, and an additional lifting equipment support platform needs to be built. The construction period is long, the positioning accuracy is poor, and it is greatly affected by the environment and hydrological conditions. It is not suitable for the construction of large-tonnage and ultra-long steel casings. In summary, it is of great significance to provide a water-based large-tonnage pile foundation steel casing lowering and positioning device that does not rely on large-scale water equipment, has a short construction period, large lifting capacity, high installation accuracy, and good economy for the green construction of bridges in the reservoir area. Utility Model Content
[0003] The purpose of the utility model is to overcome the above technical deficiencies, to provide a positioning device for lowering a steel casing of a large-tonnage pile foundation on water, and to solve the technical problems in the background technology.
[0004] In order to achieve the above-mentioned technical purpose, the technical solution of the utility model provides a device for lowering and positioning a large-tonnage pile foundation steel casing on water, including a guide frame, which is used to guide the large-tonnage pile foundation steel casing in the vertical direction. The guide frame is installed on the top of the water structure, and also includes a lifting system. The lifting system includes a pulley block, a lifting rope and a winch. The pulley block is installed on the top of the guide frame. The pulley block is used to hang the large-tonnage pile foundation steel casing. A lifting rope is wound around the pulley block, and one end of the lifting rope is connected to the winch.
[0005] Furthermore, a first deviation-correcting jack is installed at the bottom of the guide frame.
[0006] Furthermore, a second deviation-correcting jack is installed at the bottom of the above-water structure.
[0007] Furthermore, a guide cavity is provided inside the guide frame along the vertical direction.
[0008] Furthermore, a guide hole is provided inside the water structure along the vertical direction.
[0009] Furthermore, the lifting rope is a steel wire rope.
[0010] The beneficial effects of the utility model include:
[0011] 1. It can form a positioning and lowering system, and can vertically lower large-tonnage pile foundation steel casings, saving the investment in large-scale lifting equipment, reducing the dependence on large-scale water equipment, shortening the construction period, improving the installation accuracy and lowering efficiency of large-tonnage pile foundation steel casings, and solving the problem of difficulty in ensuring the verticality of large-tonnage pile foundation steel casings;
[0012] 2. A first deviation-correcting jack is installed at the bottom of the guide frame. When the large-tonnage pile foundation steel casing deviates during the lowering process, the first deviation-correcting jack can push the large-tonnage pile foundation steel casing to move, so that the central axis of the large-tonnage pile foundation steel casing remains vertical during the lowering process. Therefore, the large-tonnage pile foundation steel casing can be prevented from deviating during the lowering process, and the verticality of the large-tonnage pile foundation steel casing can be ensured during the lowering process.
[0013] 3. A second deviation-correcting jack is installed at the bottom of the water structure. When the large-tonnage pile foundation steel casing deviates during the lowering process, the second deviation-correcting jack can push the large-tonnage pile foundation steel casing to move, so that the central axis of the large-tonnage pile foundation steel casing remains vertical during the lowering process. Therefore, the deviation of the large-tonnage pile foundation steel casing can be avoided, and the verticality of the large-tonnage pile foundation steel casing during the lowering process can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of a large-tonnage pile foundation steel casing lowering and positioning device in an embodiment of the utility model;
[0015] Figure 2 yes Figure 1 A top view of
[0016] Figure 3 It is a partial structural schematic diagram of a positioning device for lowering a steel casing for a large-tonnage pile foundation on water according to an embodiment of the utility model;
[0017] Figure 4 yes Figure 3 A top view of
[0018] In the figure: 1. guide frame; 11. guide cavity; 2. water structure; 21. guide hole; 3. pulley block; 4. lifting rope; 5. winch; 6. large-tonnage pile foundation steel casing; 7. first correcting jack; 8. second correcting jack. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0020] The utility model embodiment provides a large-tonnage pile foundation steel casing lowering positioning device, such as Figure 1-4 As shown, it includes a guide frame 1, which is used to guide the large-tonnage pile foundation steel casing 6 in the vertical direction. A guide cavity 11 is provided inside the guide frame 1 along the vertical direction. The guide cavity 11 can guide the large-tonnage pile foundation steel casing 6 in the vertical direction. The guide frame 1 is installed on the top of the water structure 2, and also includes a lifting system. The lifting system includes a pulley block 3, a lifting rope 4 and a winch 5. The pulley block 3 is installed on the top of the guide frame 1. The pulley block 3 is used to hang the large-tonnage pile foundation steel casing 6. The lifting rope 4 is wound around the pulley block 3, and one end of the lifting rope 4 is connected to the winch 5. The lifting rope 3 can be pulled by the winch 5. The lifting rope 3 can drive the large-tonnage pile foundation steel casing 6 to descend in the guide cavity 11 through the pulley block 2, so as to vertically lower the large-tonnage pile foundation steel casing 6.
[0021] It should be noted that the guide frame 1 includes four support columns arranged in a cube shape and an X-shaped connecting plate connecting two adjacent support columns. A guide cavity 11 is formed between the support columns and the connecting plate. At the same time, the guide cavity 11 is a square structure, and the width of the guide cavity 11 is slightly larger than the diameter of the large-tonnage pile foundation steel casing 6, so that the large-tonnage pile foundation steel casing 6 can move freely inside the guide cavity 11.
[0022] In this embodiment, a first correcting jack 7 is installed at the bottom of the guide frame 1. When the large-tonnage pile foundation steel casing 6 deviates during the lowering process, the first correcting jack 7 can push the large-tonnage pile foundation steel casing 6 to move, so that the central axis of the large-tonnage pile foundation steel casing 6 remains in a vertical state during the lowering process. Therefore, the large-tonnage pile foundation steel casing 6 can be prevented from deviating during the process, thereby ensuring the verticality of the large-tonnage pile foundation steel casing 6 during the lowering process. There is no limitation on the number of the first correcting jacks 7 in this embodiment. There can be two of them and they can be installed on both sides of the bottom of the guide frame 1 respectively, or there can be four of them and they can be installed around the bottom of the guide frame 1 respectively. It can be selected according to actual needs. At the same time, a first sensor for detecting the offset of the large-tonnage pile foundation steel casing 6 is installed on the first correcting jack 7, and it works in conjunction with the first correcting jack 7 to correct the posture of the large-tonnage pile foundation steel casing 6.
[0023] In this embodiment, a guide hole 21 is provided inside the water structure 2 along the vertical direction. The guide hole 21 is a circular structure. The large-tonnage pile foundation steel casing 6 can be guided during the lowering process of the large-tonnage pile foundation steel casing 6 through the guide hole 21 to avoid the position of the large-tonnage pile foundation steel casing 6 being shifted during the lowering process. At the same time, the diameter of the guide hole 21 is larger than the diameter of the large-tonnage pile foundation steel casing 6, so that the large-tonnage pile foundation steel casing 6 can move freely inside the guide hole 21.
[0024] In this embodiment, a second correcting jack 8 is installed at the bottom of the water structure 2. When the large-tonnage pile foundation steel casing 6 deviates during the lowering process, the large-tonnage pile foundation steel casing 6 can be pushed to move by the second correcting jack 8, so that the central axis of the large-tonnage pile foundation steel casing 6 remains in a vertical state during the lowering process. Therefore, the large-tonnage pile foundation steel casing 6 can be prevented from deviating during the process, thereby ensuring the verticality of the large-tonnage pile foundation steel casing 6 during the lowering process. There is no limitation on the number of the second correcting jacks 8 in this embodiment. There can be two of them and they can be installed on both sides of the bottom of the water structure 2 respectively, or there can be four of them and they can be installed around the bottom of the water structure 2 respectively. It can be selected according to actual use needs. At the same time, a second sensor for detecting the offset of the large-tonnage pile foundation steel casing 6 is installed on the second correcting jack 8, and it works in conjunction with the second correcting jack 8 to correct the posture of the large-tonnage pile foundation steel casing 6.
[0025] There is no limitation on the number of lifting systems in this embodiment. There may be two lifting systems, and the pulley blocks 3 on the two lifting systems are respectively installed on the opposite sides of the top of the guide frame 1, and the two pulley blocks 3 are each wound with a lifting rope 4, and one end of the two lifting ropes 4 is respectively connected to two winches 5. There may also be four lifting systems, and the pulley blocks 3 on the four lifting systems are respectively installed around the top of the guide frame 1, and the four pulley blocks 3 are each wound with a lifting rope 4, and one end of the four lifting ropes 4 is respectively connected to four winches 5. The number can be selected according to actual needs.
[0026] Specific principle: when in use, the large-tonnage pile foundation steel casing 6 is hung by the pulley block 3, the lifting rope 3 can be pulled by the winch 4, and the lifting rope 3 can drive the large-tonnage pile foundation steel casing 6 to descend through the pulley block 2, and then the large-tonnage pile foundation steel casing 6 is lowered. When the large-tonnage pile foundation steel casing 6 is in the process of being lowered, the posture of the large-tonnage pile foundation steel casing 6 can be corrected by the first correcting jack 7 and the second correcting jack 8, so that the central axis of the large-tonnage pile foundation steel casing 6 remains in a vertical state during the lowering process, thereby ensuring the verticality of the large-tonnage pile foundation steel casing 6 during the lowering process. After the first section of the large-tonnage pile foundation steel casing 6 is lowered, the second section of the large-tonnage pile foundation steel casing 6 is lowered, and multiple sections of the large-tonnage pile foundation steel casing 6 are lowered in sequence.
[0027] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.
Claims
1. A large-tonnage pile foundation steel casing lowering and positioning device on water, characterized in that: The invention comprises a guide frame (1), wherein the guide frame (1) is used to guide a large-tonnage pile foundation steel casing (6) in a vertical direction, wherein the guide frame (1) is installed on the top of an above-water structure (2), and further comprises a lifting system, wherein the lifting system comprises a pulley block (3), a lifting rope (4) and a winch (5), wherein the pulley block (3) is installed on the top of the guide frame (1), wherein the pulley block (3) is used to hang a large-tonnage pile foundation steel casing (6), wherein a lifting rope (4) is wound around the pulley block (3), and one end of the lifting rope (4) is connected to the winch (5).
2. The device for lowering and positioning a large-tonnage pile foundation steel casing on water according to claim 1 is characterized in that: A first deviation-correcting jack (7) is installed at the bottom of the guide frame (1).
3. The device for lowering and positioning a large-tonnage pile foundation steel casing on water according to claim 1 is characterized in that: A second deviation-correcting jack (8) is installed at the bottom of the above-water structure (2).
4. The device for lowering and positioning a large-tonnage pile foundation steel casing on water according to claim 1 is characterized in that: A guide cavity (11) is provided inside the guide frame (1) along the vertical direction.
5. The device for lowering and positioning a large-tonnage pile foundation steel casing on water according to claim 1 is characterized in that: A guide hole (21) is provided inside the above-water structure (2) along the vertical direction.
6. The device for lowering and positioning a large-tonnage pile foundation steel casing on water according to claim 1, characterized in that: The suspension rope (4) is a steel wire rope.