Noise reduction structure of hammer type pile driver

Abstract

The utility model provides a noise reduction structure of a hammer type pile driver, which belongs to the technical field of pile drivers, and comprises a piling impact assembly, a linear guide rail, a plurality of groups of connecting cables and a noise suppression assembly on the outer side of the linear guide rail, the piling impact assembly is movably arranged on the linear guide rail, and the linear guide rail is arranged on the linear guide rail. The linear guide rail is connected with a pile driver power system through a connecting cable and used for moving up and down to achieve hammering operation, the noise suppression assembly is arranged on the outer side of the linear guide rail in a sectional surrounding mode, connected with the linear guide rail and used for reducing noise generated in the pile driving process, and a pulley block is arranged at the top end of the linear guide rail and used for fixing the linear guide rail. The noise suppression assembly comprises a peripheral part and an embedded part, the embedded part is movably connected with the inner wall of the peripheral part, and airflow guide holes are formed in the peripheral part and the embedded part; the utility model can solve the problem that the hammering working area of the hammer type pile driver is loud in noise.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile drivers, and in particular relates to a noise reduction structure for a hammer pile driver. Background Art

[0002] With the acceleration of urbanization, the scale of infrastructure construction continues to expand. Hammer pile drivers are widely used in many infrastructure construction fields, such as buildings, bridges, and docks. By hammering piles into the ground, they provide stable foundation support for buildings or other structures.

[0003] Hammer pile drivers produce impact noise during operation. When the hammer hits the top of the pile at a high speed, it instantly generates a tremendous impact force. This force causes the hammer and the pile surface to vibrate violently, generating sound waves that propagate around.

[0004] To address the noise problem, a noise reduction structure is used to isolate the generated noise. This structure is typically located in the area where the hammer head contacts the pile column, limiting its ability to isolate noise from the entire hammering area. Furthermore, since the noise reduction structure creates a relatively closed environment between the hammer head and the pile column, the surrounding air is rapidly squeezed during the hammer's descent. Due to the hammer's rapid movement, the air has little time to diffuse out, forming a high-pressure area around the hammer head. This rapid flow of air from the high-pressure area to the surrounding low-pressure area generates aerodynamic noise, which compromises the noise reduction effectiveness of the noise reduction structure. Utility Model Content

[0005] In view of this, the utility model provides a noise reduction structure for a hammer pile driver, which can solve the problem of high noise in the hammering working area of ​​the hammer pile driver.

[0006] The utility model is achieved in that:

[0007] The utility model provides a noise reduction structure for a hammer pile driver, which includes a pile driving impact assembly, a linear guide rail, a plurality of connecting cables and a noise suppression assembly on the outer side of the linear guide rail. The pile driving impact assembly is movably arranged on the linear guide rail and is connected to the pile driver power system through a connecting cable for moving up and down to realize hammering operation. The noise suppression assembly is segmented and arranged around the outer side of the linear guide rail and is connected to the linear guide rail for reducing noise generated during pile driving. A pulley group is provided at the top end of the linear guide rail. The noise suppression assembly includes an outer portion and an inner embedded portion, the outer portion is fixedly connected to the linear guide rail, the inner embedded portion is movably connected to the inner wall of the outer portion, the top end of the inner embedded portion is connected to the pile driver power system through a connecting cable, and air flow guide holes are provided on both the outer portion and the inner embedded portion.

[0008] The technical effects of the noise reduction structure of a hammer pile driver provided by the utility model are as follows: a noise suppression component is arranged on a linear guide rail to form a noise reduction space around the pile driving impact component; by arranging an outer portion and an inner embedded portion, the inner embedded portion can be recovered to the inner side of the outer portion, and when it needs to be extended, it is dropped and released by an electric winch to form a noise reduction space, block the noise from propagating outward, and reduce the noise generated by the hammering; cooperate with the airflow guide hole to generate multiple reflections and friction when the airflow passes through, thereby reducing the noise generated by the airflow, guiding the airflow to pass smoothly, further reducing the airflow resistance caused by the descent of the hammer head, and reducing the noise.

[0009] On the basis of the above technical solution, the noise reduction structure of a hammer pile driver of the present invention can also be improved as follows:

[0010] Among them, the pulley group includes three groups of fixed pulleys, one group of which is arranged at the top center position of the linear guide rail and fixedly connected to the linear guide rail. The pile driving impact assembly includes a hammer head and a connecting member. The hammer head is connected to the hook at the end of the connecting cable through the connecting member at the top.

[0011] Furthermore, the hammer head is slidably connected to the linear guide rail through a guide seat, and the hammer head and the guide seat are an integrated structure.

[0012] Furthermore, mounting holes are provided on both sides of the linear guide rail, the two sides of the outer portion are fixedly mounted to the linear guide rail through a flange structure, the inner side wall of the outer portion is provided with a sliding guide groove, and the outer side wall of the embedded portion is movably connected to the sliding guide groove through a guide slider.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are: setting mounting holes on both sides of the linear guide rail to adapt the outer part to be fixedly connected through the flange structure and bolts, and setting a sliding guide groove to enable the embedded part to be displaced along the sliding guide groove with the help of the guide slider.

[0014] Furthermore, both sides of the top of the embedded part are connected to the hooks at the ends of the connecting cables through a set of fixing rings, and are connected to the power system of the pile driver through the connecting cables.

[0015] Furthermore, the other two groups of fixed pulleys are arranged on both sides of the top end of the linear guide rail, fixedly connected to the linear guide rail, and used to connect the connecting cables on both sides of the top end of the embedded part.

[0016] Furthermore, the inner and outer walls of the outer portion and the embedded portion are galvanized steel plate layers, and there is an intermediate layer between the galvanized steel plate layers on both sides. The intermediate layer is filled with centrifugal glass wool, and the air flow guide holes are opened on the inner and outer walls of the outer portion and the embedded portion to allow the gas to flow outward through the intermediate layer.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are: by designing a multi-layer structure, galvanized steel plate layers are used to ensure noise isolation and provide supporting strength. The centrifugal glass wool in the middle layer uses its own porous structure to cause the internal fibers to vibrate when sound waves propagate therein, thereby absorbing medium and high frequency noise.

[0018] Furthermore, a stopper is provided at the top end of the sliding guide groove, and the stopper is used to limit the sliding of the embedded portion. A through hole is provided on the stopper for the connection cable to pass through.

[0019] Furthermore, the pile driver power system includes an onboard platform, an engine and a transmission mechanism, and electric winches on both sides. The engine is used to connect and drive the pile driving impact assembly, and the electric winch is used to connect to the embedded part.

[0020] Furthermore, a rubber wrapping layer is provided at the bottom of the embedded portion.

[0021] Compared with the prior art, the beneficial effect of the noise reduction structure of a hammer pile driver provided by the utility model is as follows: by arranging a noise suppression component on the linear guide rail, a noise reduction space is formed around the pile driving impact component; by arranging the outer part and the inner embedded part, the inner embedded part can be recovered to the inner side of the outer part, and when it needs to be extended, it is dropped and released by the electric winch to form a noise reduction space, block the noise from propagating outward, reduce the noise generated by the hammering, cooperate with the airflow guide hole to generate multiple reflections and friction when the airflow passes through, thereby reducing the noise generated by the airflow, guiding the airflow to pass smoothly, further reducing the airflow resistance caused by the descent of the hammer head, and reducing the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic diagram of a noise reduction structure for a hammer pile driver;

[0024] Figure 2 A top view of a noise reduction structure for a hammer pile driver;

[0025] Figure 3 It is a schematic diagram of the connection between the connecting cable and the hammer head through the connecting member;

[0026] Figure 4It is a schematic diagram of the connection between the peripheral part and the embedded part;

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 10. Pile driving impact assembly; 101. Hammer head; 102. Connecting member; 11. Linear guide rail; 12. Connecting cable; 13. Noise suppression assembly; 14. Pulley block; 15. Peripheral portion; 16. Embedded portion; 17. Air flow guide hole; 18. Rubber wrapping layer; 19. Galvanized steel plate layer; 20. Intermediate layer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0030] like Figure 1-4 As shown, an embodiment of a noise reduction structure of a hammer pile driver provided by the utility model is shown. In this embodiment, it includes a pile driving impact assembly 10, a linear guide rail 11, multiple groups of connecting cables 12 and a noise suppression assembly 13 outside the linear guide rail 11. The pile driving impact assembly 10 is movably arranged on the linear guide rail 11 and is connected to the pile driver power system through the connecting cable 12. It is used to move up and down to achieve hammering operation. The noise suppression assembly 13 is segmented and arranged around the outside of the linear guide rail 11 and is connected to the linear guide rail 11 to reduce the noise generated during the pile driving process. A pulley group 14 is provided at the top of the linear guide rail 11. The noise suppression assembly 13 includes an outer portion 15 and an inner embedded portion 16. The outer portion 15 is fixedly connected to the linear guide rail 11, and the inner embedded portion 16 is movably connected to the inner wall of the outer portion 15. The top of the inner embedded portion 16 is connected to the pile driver power system through the connecting cable 12. Air flow guide holes 17 are provided on both the outer portion 15 and the inner embedded portion 16.

[0031] When the embedded part 16 is in the retracted state, one side of the linear guide rail 11 is kept horizontal with the pile body, and the connecting cable 12 connected to the embedded part 16 is paid out by an electric winch, so that the embedded part 16 is displaced downward along the inner side of the outer part 15 and contacts the ground through the bottom rubber wrapping layer 18. When the pile driver is working, the engine cooperates with the transmission mechanism to stably transfer kinetic energy to the connecting cable 12 on the rotating shaft, and the connecting cable 12 cooperates with the fixed pulley at the top of the linear guide rail 11 to drive the piling impact assembly 10 to move, and the pile body is driven by the hammer head 101. During the falling process of the hammer head 101, the galvanized steel plate layer 19 is used to block and the middle layer 20 is used to absorb sound to reduce the intensity of the noise propagation outward, and when the hammer head 101 descends, the airflow guide hole 17 can guide the airflow to pass smoothly, thereby reducing the airflow resistance and air noise generated by the descent of the hammer head 101.

[0032] Among them, in the above technical solution, the pulley group 14 includes three groups of fixed pulleys, one of which is arranged at the top center position of the linear guide rail 11 and is fixedly connected to the linear guide rail 11. The piling impact assembly 10 includes a hammer head 101 and a connecting member 102. The hammer head 101 is connected to the hook at the end of the connecting cable 12 through the top connecting member 102.

[0033] Furthermore, in the above technical solution, the hammer head 101 is slidably connected to the linear guide rail 11 through the guide seat, and the hammer head 101 and the guide seat are an integrated structure.

[0034] Furthermore, in the above technical solution, mounting holes are provided on both sides of the linear guide rail 11, both sides of the outer portion 15 are fixedly mounted to the linear guide rail 11 through a flange structure, the inner side wall of the outer portion 15 is provided with a sliding guide groove, and the outer side wall of the embedded portion 16 is movably connected to the sliding guide groove through a guide slider.

[0035] Furthermore, in the above technical solution, both sides of the top of the embedded portion 16 are connected to the hooks at the ends of the connecting cable 12 through a set of fixing rings, and are connected to the pile driver power system through the connecting cable 12.

[0036] Furthermore, in the above technical solution, the other two sets of fixed pulleys are arranged on both sides of the top of the linear guide rail 11 and are fixedly connected to the linear guide rail 11 for connecting the connecting cables 12 on both sides of the top of the contact embedded portion 16 .

[0037] Among them, the transmission mechanism includes a clutch, a gearbox, and a coupling; when in use, the power generated by the engine is first transmitted to the gearbox through the clutch. After the gearbox adjusts the power to the set speed and torque, it is transmitted to the fixed pulley at the top of the linear guide rail 11 through the coupling and the rotating shaft connecting cable 12. The connecting cable 12 on the fixed pulley transmits power to the hammer head 101, so that the hammer head 101 moves up and down the linear guide rail 11 under the combined action of gravity and power to complete the piling action.

[0038] Furthermore, in the above technical solution, the inner and outer walls of the outer portion 15 and the embedded portion 16 are galvanized steel plate layers 19, and the intermediate layer 20 is between the galvanized steel plate layers 19 on both sides. The intermediate layer 20 is filled with centrifugal glass wool, and the air flow guide holes 17 are opened on the inner and outer walls of the outer portion 15 and the embedded portion 16 to allow the gas to flow outward through the intermediate layer 20.

[0039] Furthermore, in the above technical solution, a stopper is provided at the top end of the sliding guide groove, and the stopper is used to limit the sliding of the embedded portion 16 , and a through hole is provided on the stopper for the connection cable 12 to pass through.

[0040] Furthermore, in the above technical solution, the pile driver power system includes an onboard platform, an engine and a transmission mechanism, and electric winches on both sides. The engine is used to connect and drive the pile driving impact assembly 10 , and the electric winch is used to connect to the embedded part 16 .

[0041] Furthermore, in the above technical solution, a rubber wrapping layer 18 is provided at the bottom of the embedded portion 16 .

[0042] Specifically, the principle of the present invention is as follows: when the embedded part 16 is in the retracted state, one side of the linear guide rail 11 is kept horizontal with the pile body, and the connecting cable 12 connected to the embedded part 16 is paid out by an electric winch, so that the embedded part 16 is displaced downward along the inner side of the outer part 15 and contacts the ground through the bottom rubber wrapping layer 18. When the pile driver is working, the engine cooperates with the transmission mechanism to stably transmit kinetic energy to the connecting cable 12 on the rotating shaft, and the connecting cable 12 cooperates with the fixed pulley at the top of the linear guide rail 11 to drive the piling impact assembly 10 to move, and the hammer head 101 is used to drive the pile body. During the falling process of the hammer head 101, the galvanized steel plate layer is used to block and the middle layer is used to absorb sound to reduce the intensity of noise propagation outward, and when the hammer head 101 descends, the airflow guide hole 17 can guide the airflow to pass smoothly, thereby reducing the airflow resistance and air noise generated by the descent of the hammer head 101.

Claims

1. A noise reduction structure for a hammer pile driver, characterized in that: The invention comprises a pile driving impact assembly (10), a linear guide rail (11), a plurality of connecting cables (12) and a noise suppression assembly (13) outside the linear guide rail (11). The pile driving impact assembly (10) is movably arranged on the linear guide rail (11) and is connected to the pile driver power system through the connecting cable (12) for moving up and down to realize hammering operation. The noise suppression assembly (13) is arranged in sections around the outside of the linear guide rail (11) and is connected to the linear guide rail (11) for reducing the noise caused by pile driving. The noise generated during the pile driving process is suppressed. A pulley block (14) is provided at the top end of the linear guide rail (11). The noise suppression component (13) includes an outer portion (15) and an inner embedded portion (16). The outer portion (15) is fixedly connected to the linear guide rail (11). The inner embedded portion (16) is movably connected to the inner wall of the outer portion (15). The top end of the inner embedded portion (16) is connected to the pile driver power system through a connecting cable (12). Air flow guide holes (17) are provided on both the outer portion (15) and the inner embedded portion (16).

2. The noise reduction structure of a hammer pile driver according to claim 1, characterized in that: The pulley block (14) includes three groups of fixed pulleys, one of which is arranged at the top center position of the linear guide rail (11) and fixedly connected to the linear guide rail (11). The pile driving impact assembly (10) includes a hammer head (101) and a connecting member (102). The hammer head (101) is connected to the hook at the end of the connecting cable (12) through the connecting member (102) at the top.

3. The noise reduction structure of a hammer pile driver according to claim 2, characterized in that: The hammer head (101) is slidably connected to the linear guide rail (11) via a guide seat, and the hammer head (101) and the guide seat are an integrated structure.

4. The noise reduction structure of a hammer pile driver according to claim 3, characterized in that: Mounting holes are provided on both sides of the linear guide rail (11), both sides of the peripheral portion (15) are fixedly mounted to the linear guide rail (11) via a flange structure, the inner side wall of the peripheral portion (15) is provided with a sliding guide groove, and the outer side wall of the embedded portion (16) is movably connected to the sliding guide groove via a guide slider.

5. The noise reduction structure of a hammer pile driver according to claim 4, characterized in that: Both sides of the top end of the embedded part (16) are connected to the hooks at the end of the connecting cable (12) through a group of fixing rings, and are connected to the pile driver power system through the connecting cable (12).

6. The noise reduction structure of a hammer pile driver according to claim 5, characterized in that: The other two groups of fixed pulleys are arranged on both sides of the top end of the linear guide rail (11), fixedly connected to the linear guide rail (11), and used to connect the connecting cables (12) on both sides of the top end of the embedded part (16).

7. The noise reduction structure of a hammer pile driver according to claim 6, characterized in that: The inner and outer side walls of the outer portion (15) and the inner embedded portion (16) are galvanized steel plate layers (19), and an intermediate layer (20) is provided between the galvanized steel plate layers (19) on both sides. The intermediate layer (20) is filled with centrifugal glass wool, and the air flow guide holes (17) are provided on the inner and outer side walls of the outer portion (15) and the inner embedded portion (16) to allow the gas to flow outward through the intermediate layer (20).

8. The noise reduction structure of a hammer pile driver according to claim 7, characterized in that: A stopper is provided at the top end of the sliding guide groove, and the stopper is used to limit the sliding movement of the embedded portion (16). A through hole is provided on the stopper for the connection cable (12) to pass through.

9. The noise reduction structure of a hammer pile driver according to claim 8, characterized in that: The pile driver power system comprises an onboard platform, an engine and a transmission mechanism, and electric winches on both sides. The engine is used to connect and drive the pile driving impact assembly (10), and the electric winches are used to connect the embedded part (16).

10. The noise reduction structure of a hammer pile driver according to claim 9, characterized in that: A rubber wrapping layer (18) is provided at the bottom of the embedded portion (16).

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