Buffering device for offshore hydraulic pile hammer capable of being lubricated by oil injection

Abstract

The utility model discloses a buffer device for an offshore hydraulic pile hammer capable of being lubricated by oil injection. A positioning mechanism is arranged on the lower side of the base, the positioning mechanism comprises a connecting shaft, a concave block and a hard spring, the connecting shaft is fixedly installed on the inner side of the accessory, and the accessory is fixedly installed on the lower side of the connecting column; an oil injection mechanism is arranged on the side face of the base and comprises an oil injection port, a first connecting cover and an oil discharge port, the oil injection port is formed in the right side of the base, and the upper side of the oil injection port is in threaded connection with the first connecting cover. When the hydraulic pile hammer works, the movable table pushes high-pressure hydraulic oil to overflow from the connecting position of the positioning table and the connecting column, the buffering effect is achieved, when an accessory falls on a pile foundation, the concave block is concave inwards, the pile foundation can slide to the lower side of the accessory, positioning is facilitated, a first connecting cover is opened, and then the high-pressure hydraulic oil can be injected into the base; and the oil injection is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pile hammers, in particular to a buffer device for an offshore hydraulic pile hammer capable of being lubricated with oil. Background Art

[0002] With the rapid development of the offshore wind power industry, the requirements for construction equipment are becoming increasingly stringent. Traditional pile hammers are no longer able to meet the demands of deep-sea, large-diameter, and high-energy construction, becoming a bottleneck hindering the further development of the offshore wind power industry. Therefore, the development of hydraulic pile hammers with higher energy and larger diameters has become a top priority. An offshore hydraulic pile hammer is a type of piling machine specifically used in offshore engineering construction. It uses the power of an excavator, its own weight, and the weight of the pile to drive the pile into the soil of the seabed or riverbed. This equipment has a wide range of applications in offshore wind power, port construction, and offshore platforms. Offshore hydraulic pile hammers utilize hydraulic transmission principles. A hydraulic pump delivers hydraulic oil to the hammer's hydraulic cylinder, driving the hammer core up and down, generating tremendous impact force and driving the pile into the seabed or riverbed. Hydraulic pile hammers offer advantages such as low noise, no pollution, and low vibration, making them suitable for construction in environmentally sensitive waters. Therefore, the successful development of ultra-large hydraulic pile hammers with a capacity of over 6,000 kJ will play a decisive role in the future high-quality development of my country's offshore wind power industry. At the same time, this technology will also enter the international market, making China a leader in the global offshore wind power construction equipment field;

[0003] With reference to Chinese patent authorization publication number CN217949050U, with an authorization publication date of December 2, 2022, a buffer device for a hydraulic hammer connected to a pile cap is disclosed. This utility model provides a buffer device for a hydraulic hammer connected to a pile cap. The device, through a sliding sleeve, a connecting column, and a second spring, provides a good buffering effect on the slide during use, thereby resolving the problem of poor buffering effect of the slide during use. The device, through a pulley, provides a good stabilizing effect on the connecting column during use, thereby resolving the problem of poor stability of the connecting column during use.

[0004] However, during use of the utility model, it is inconvenient to oil the hydraulic pile hammer, which causes the hydraulic pile hammer to wear out after multiple operations, thereby increasing maintenance costs. In addition, the hydraulic pile hammer may deviate during the falling process. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a buffer device for a marine hydraulic pile hammer that can be lubricated with oil, which solves the original problem of inconvenient oil filling, which causes wear of the hydraulic pile hammer, and the possibility of deviation of the hydraulic pile hammer during the falling process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a positioning mechanism is provided on the lower side of the base, wherein the positioning mechanism includes a connecting shaft, a concave block and a hard spring, the connecting shaft is fixedly installed on the lower side of the attachment, and the attachment is fixedly installed on the lower side of the connecting column.

[0007] By adopting the above technical solution, it can be ensured that the hydraulic pile hammer can be accurately positioned with the pile foundation, thereby ensuring the safety of piling.

[0008] As an optimal technical solution of the present invention, an oil filling mechanism is provided on the side of the base, wherein the oil filling mechanism includes an oil filling port, a first connecting cover and an oil drain port, the oil filling port is provided on the right side of the base, and the upper side of the oil filling port is threadedly connected to the first connecting cover.

[0009] By adopting the above technical solution, high-pressure liquid oil can be injected into the interior of the base through the oil filling port to reduce friction.

[0010] As a preferred technical solution of the present invention, a hydraulic buffer cylinder is provided on the upper side of the interior of the base, a slide is fixedly connected to the lower side of the hydraulic buffer cylinder, and a positioning platform is provided inside the base.

[0011] By adopting the above technical solution, the slide can support the spring.

[0012] As a preferred technical solution of the present invention, the slide is slidably connected to the base, and a connecting column is fixedly connected to the lower side of the slide, and the connecting column passes through the positioning platform.

[0013] By adopting the above technical solution, the flow rate of the high-pressure liquid oil can be controlled by the positioning platform to play a buffering role.

[0014] As a preferred technical solution of the present invention, the lower side of the connecting column is fixedly connected to a moving platform, a first sealing gasket is provided on the outer side of the moving platform, and high-pressure liquid oil is provided on the upper side of the moving platform.

[0015] By adopting the above technical solution, the first sealing gasket can prevent the high-pressure liquid oil from flowing to the lower side of the movable platform, thereby saving the high-pressure liquid oil.

[0016] As a preferred technical solution of the present invention, a cleaning ring is provided on the lower side of the base, and a second sealing gasket is provided on the inner side of the cleaning ring. In addition, the connecting column passes through the lower side of the base and the cleaning ring.

[0017] The above technical solution can prevent stains from entering the base through the connection between the base and the connecting column, thereby playing a protective role.

[0018] As a preferred technical solution of the present invention, the connecting shaft is slidably connected to the attachment, and the connecting shafts are distributed in an array, and a concave block is fixedly connected to the inner side of the connecting shaft.

[0019] By adopting the above technical solution, the concave block can be moved in the attachment, making positioning easier.

[0020] As a preferred technical solution of the present invention, a hard spring is provided on the outside of the connecting shaft, and the connecting shaft, the concave block and the hard spring correspond to each other one by one.

[0021] By adopting the above technical solution, the pile foundation can be accurately placed in the middle of the lower side of the attachment to prevent deviation.

[0022] As a preferred technical solution of the present invention, an oil drain port is provided at the lower right side of the base, and the lower side of the oil drain port is threadedly connected to the second connecting cover, and the oil drain port is located below the oil filling port.

[0023] By adopting the above technical solution, dirty oil can be discharged through the oil drain port, making it convenient to replace high-pressure liquid oil.

[0024] Compared with the prior art, the present invention has the following beneficial effects: when the hydraulic pile hammer is working, the mobile platform will push the high-pressure liquid oil to overflow from the connection between the positioning platform and the connecting column, playing a buffering role; when the attachment falls on the pile foundation, the concave block is concave inward, allowing the pile foundation to slide to the lower side of the attachment, which is conducive to positioning; by opening the first connecting cover, high-pressure liquid oil can be injected into the base, which facilitates the purpose of oiling;

[0025] 1. A moving platform, a first sealing gasket and high-pressure liquid oil are provided. When the hydraulic pile hammer is working, the moving platform moves up, pushing the high-pressure liquid oil to overflow from the connection between the positioning platform and the connecting column, playing a buffering role;

[0026] 2. It is equipped with a connecting shaft, a concave block and a hard spring. When the attachment falls on the pile foundation, the concave block is concave inward, allowing the pile foundation to slide to the bottom side of the attachment, which is conducive to positioning;

[0027] 3. An oil filling port, a first connecting cover and an oil drain port are provided. By opening the first connecting cover, high-pressure liquid oil can be injected into the base, which facilitates oil filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the front view cutaway structure of the present utility model;

[0030] Figure 2For the utility model Figure 1 A in the middle is an enlarged structural diagram;

[0031] Figure 3 This is a bottom view of the structure of the attachment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the working structure of the mobile station of the present utility model;

[0033] Figure 5 It is a front view structural schematic diagram of the present utility model.

[0034] In the figure: 1. Base; 2. Hydraulic buffer cylinder; 3. Slide; 4. Positioning platform; 5. Connecting column; 6. Moving platform; 7. First sealing gasket; 8. High-pressure liquid oil; 9. Cleaning ring; 10. Second sealing gasket; 11. Attachment; 12. Connecting shaft; 13. Concave block; 14. Hard spring; 15. Oil filling port; 16. First connecting cover; 17. Oil drain port; 18. Second connecting cover. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiments

[0036] This embodiment is a buffer device for an offshore hydraulic pile hammer that can be lubricated with oil.

[0037] like Figure 1 As shown, a hydraulic buffer cylinder 2 is provided on the upper side of the interior of the base 1, and a slide 3 is fixedly connected to the lower side of the hydraulic buffer cylinder 2. A positioning platform 4 is provided inside the base 1, and the slide 3 is slidably connected to the base 1. A connecting column 5 is fixedly connected to the lower side of the slide 3, and the connecting column 5 passes through the positioning platform 4. A moving platform 6 is fixedly connected to the lower side of the connecting column 5, and a first sealing gasket 7 is provided on the outer side of the moving platform 6. High-pressure liquid oil 8 is provided on the upper side of the moving platform 6. A cleaning ring 9 is provided on the lower side of the base 1, and a second sealing gasket 10 is provided on the inner side of the cleaning ring 9. The connecting column 5 passes through the lower side of the base 1 and the cleaning ring 9.

[0038] like Figure 1 、 Figure 2 and Figure 3As shown, an accessory 11 is fixedly installed on the lower side of the connecting column 5, and a connecting shaft 12 is fixedly installed on the inner side of the accessory 11. The connecting shaft 12 is slidingly connected to the accessory 11, and the connecting shafts 12 are distributed in an array. A recessed block 13 is fixedly connected to the inner side of the connecting shaft 12, and a hard spring 14 is provided on the outer side of the connecting shaft 12. The connecting shaft 12, the recessed block 13 and the hard spring 14 correspond to each other one by one. The oil filling port 15 is provided on the right side of the base 1, and the upper side of the oil filling port 15 is threadedly connected to the first connecting cover 16. An oil drain port 17 is provided at the lower right side of the base 1, and the lower side of the oil drain port 17 is threadedly connected to the second connecting cover 18. The oil drain port 17 is located below the oil filling port 15.

[0039] It should be noted that if Figure 1 and Figure 4 As shown, when using this device, first dock the base 1 in the positioning device so that the center of the base 1 and the center of the pile foundation are on the same vertical line, and then the pile foundation can be hydraulically piled. During the piling process, the attachment 11 will push the connecting column 5 upward. During the upward movement of the connecting column 5, the movable platform 6 and the first sealing gasket 7 will also move upward. The high-pressure liquid oil 8 located on the lower side of the positioning platform 4 and the upper side of the movable platform 6 will move up and overflow from the connection between the positioning platform 4 and the connecting column 5. When the gap between the positioning platform 4 and the connecting column 5 is smaller, the pressure on the high-pressure liquid oil 8 will increase, which plays a buffering role. In addition, the connecting column 5 will also push the slide 3 upward, allowing the hydraulic buffer cylinder 2 to play a buffering role, further preventing damage to the base 1. When the base 1 moves up to disconnect the attachment 11 from the pile foundation, the attachment 11 will move down with the connecting column 5 under the action of gravity. At this time, the high-pressure liquid oil 8 overflowing to the upper side of the positioning platform 4 will be sucked to the lower side of the positioning platform 4 from the gap between the positioning platform 4 and the connecting column 5 due to the action of pressure. This cycle will repeat, playing a buffering role. In addition, the first sealing gasket 7 can prevent the high-pressure liquid oil 8 from flowing to the lower side of the movable platform 6, playing a sealing role. In addition, a cleaning ring 9 and a second sealing gasket 10 are provided on the lower side of the base 1. The second sealing gasket 10 plays a sealing role, and the cleaning ring 9 can clean the outside of the connecting column 5 to prevent stains from entering the interior of the base 1, causing the high-pressure liquid oil 8 to be contaminated, thereby playing a protective role. Specific embodiments

[0040] This embodiment is intended to solve the problem of inconvenient oil filling.

[0041] like Figure 1 and Figure 2 As shown, by turning open the first connecting cover 16 threadedly connected to the oil filling port 15, high-pressure liquid oil 8 can be added to the base 1 from the oil filling port 15. However, the high-pressure liquid oil 8 will inevitably be contaminated after long-term use. The high-pressure liquid oil 8 containing particulate matter will increase friction and cause the device to be worn. Then, the second connecting cover 18 is turned open, and air enters the base 1 from the oil filling port 15, and the dirty oil is discharged from the oil drain port 17, which is easy to operate. Specific embodiments

[0042] This embodiment is intended to solve the problem of inaccurate positioning.

[0043] like Figure 1 and Figure 3 As shown, the interior of the attachment 11 is provided with a connecting shaft 12, a recessed block 13 and a hard spring 14. The recessed block 13 is arranged in an arc shape. When the pile foundation contacts the recessed block 13, the pile foundation will squeeze the recessed block 13 to allow the connecting shaft 12 to move outward. At this time, the hard spring 14 will undergo elastic deformation and the pile foundation will also be positioned. When the base 1 moves up, the hard spring 14 will restore the elastic deformation and allow the recessed block 13 to move inward, which is convenient for piling on the lower side. The positioned pile foundation will also be on the same vertical line as the center of the base 1.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication, comprising: Base (1); It is characterized by further comprising: A positioning mechanism is provided on the lower side of the base (1), wherein the positioning mechanism comprises a connecting shaft (12), a concave block (13) and a hard spring (14); the connecting shaft (12) is fixedly mounted on the inner side of the attachment (11), and the attachment (11) is fixedly mounted on the lower side of the connecting column (5); An oil filling mechanism is provided on the side of the base (1), wherein the oil filling mechanism comprises an oil filling port (15), a first connecting cover (16) and an oil discharge port (17); the oil filling port (15) is provided on the right side of the base (1), and the upper side of the oil filling port (15) is threadedly connected to the first connecting cover (16).

2. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 1, characterized in that: A hydraulic buffer cylinder (2) is provided on the upper side of the interior of the base (1), a slide (3) is fixedly connected to the lower side of the hydraulic buffer cylinder (2), and a positioning platform (4) is provided inside the base (1).

3. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 2, characterized in that: The slide (3) is slidably connected to the base (1), and a connecting column (5) is fixedly connected to the lower side of the slide (3), and the connecting column (5) passes through the positioning platform (4).

4. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 3, characterized in that: The lower side of the connecting column (5) is fixedly connected to a movable platform (6), a first sealing gasket (7) is provided on the outer side of the movable platform (6), and high-pressure liquid oil (8) is provided on the upper side of the movable platform (6).

5. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 1, characterized in that: A cleaning ring (9) is provided on the lower side of the base (1), and a second sealing gasket (10) is provided on the inner side of the cleaning ring (9), and the connecting column (5) passes through the lower side of the base (1) and the cleaning ring (9).

6. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 1, characterized in that: The connecting shaft (12) is slidably connected to the attachment (11), and the connecting shafts (12) are distributed in an array, and a concave block (13) is fixedly connected to the inner side of the connecting shaft (12).

7. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 6, characterized in that: A hard spring (14) is provided on the outside of the connecting shaft (12), and the connecting shaft (12), the concave block (13) and the hard spring (14) correspond to each other one by one.

8. The buffer device for an offshore hydraulic pile hammer capable of oil injection and lubrication according to claim 1, characterized in that: An oil drain port (17) is provided at the lower right side of the base (1), and the lower side of the oil drain port (17) is threadedly connected to the second connection cover (18), and the oil drain port (17) is located below the oil filling port (15).

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