CN215801612U - Noise reduction auxiliary device for hydraulic pile hammer - Google Patents
Noise reduction auxiliary device for hydraulic pile hammer Download PDFInfo
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- CN215801612U CN215801612U CN202120711869.2U CN202120711869U CN215801612U CN 215801612 U CN215801612 U CN 215801612U CN 202120711869 U CN202120711869 U CN 202120711869U CN 215801612 U CN215801612 U CN 215801612U
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Abstract
The utility model discloses a noise reduction auxiliary device for a hydraulic pile hammer, which is externally arranged on the outer sides of a hammer cap and a steel pipe column, is arranged in the hammer cap in a substituted manner and comprises an inner cylinder and an outer cylinder, wherein the inner ring of the inner cylinder is attached to the outer side of the hammer cap, a hollow structure in the inner cylinder is filled with silencing cotton, the outer cylinder comprises an upper outer cylinder and a lower outer cylinder, the bottom of the inner side of the upper outer cylinder is arranged above the inner cylinder, the outer sides of the upper outer cylinder and the lower outer cylinder are fixedly connected through a fastening bolt, the wall of the inner side of the lower outer cylinder is arranged on the outer side of the steel pipe column and is not contacted with the outer side of the steel pipe column, the inner wall of the upper outer cylinder, a water channel is arranged between the outer wall of the inner barrel and the inner wall of the lower outer barrel, a water inlet is arranged above the water channel at the top of the upper outer barrel, a baffle is arranged at the water inlet, a plurality of air holes are distributed on the baffle, an air inlet is arranged at the bottom of the lower outer barrel, a bubble generator is fixedly arranged at the bottom of the air inlet, and a water outlet is arranged at the side edge of the bottom of the outer wall of the lower outer barrel. The utility model has the advantages of simple structure, good sealing and shock absorption performance of the joint and excellent noise reduction effect.
Description
Technical Field
The utility model relates to the technical field of noise reduction of offshore wind power pile hammers, in particular to a noise reduction auxiliary device for a hydraulic pile hammer.
Background
The hydraulic pile hammer is a basic construction device which takes hydraulic oil as a working medium, utilizes the pressure of the hydraulic oil to transmit power and drives a hammer core to carry out pile driving operation. Still be provided with between hydraulic pressure pile hammer and the steel-pipe pile and replace and beat and hammer cap, the periodic whereabouts of hydraulic pressure pile hammer and impact are replaced and beat, and the steel-pipe pile foundation sinks gradually and deepens soil depths after receiving indirect impact, finally realizes the stable installation of steel-pipe pile foundation. The hydraulic pile hammer and the secondary pile are both made of steel, and the noise generated by the hydraulic pile hammer and the secondary pile in the impacting process is very large, so that the serious noise pollution problem is brought to the construction environment; these noises are not only harmful to the workers, but also have a bad influence on marine life.
The traditional noise reduction device mainly adopts a mode of a sound absorption pad, the effect is poor, the preparation work in the early stage is complex, and the work difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a noise reduction auxiliary device for a hydraulic pile driving hammer, which solves the problem of noise pollution in the existing pile driving process and reduces relatively complicated preparation work in the early stage.
The technical purpose of the utility model is realized by the following technical scheme:
a noise reduction auxiliary device for a hydraulic pile hammer is characterized by further comprising an inner barrel and an outer barrel, wherein the inner ring of the inner barrel is attached to the outer side of the hammer cap, the inner barrel is of a hollow structure, noise reduction cotton is filled in the hollow structure in the inner barrel, the outer barrel comprises an upper outer barrel and a lower outer barrel, the bottom of the inner side of the upper outer barrel is arranged above the inner barrel, the outer sides of the upper outer barrel and the lower outer barrel are fixedly connected through fastening bolts, the inner side barrel wall of the lower outer barrel is arranged outside a steel pipe pile and does not contact with the outer side of the steel pipe pile, a water channel is arranged between the inner wall of the upper outer barrel, the outer wall of the inner barrel and the inner wall of the lower outer barrel, a water inlet is arranged above the water channel at the top of the upper outer barrel, a baffle is arranged at the water inlet, a plurality of air holes are distributed in the baffle, and an air inlet is arranged at the bottom of the lower outer barrel, the bottom of the air inlet is fixedly provided with a bubble generator, and the side edge of the bottom of the outer wall of the lower outer barrel is provided with a water outlet.
Preferably, a plurality of wedge-shaped protrusions are arranged on the inner wall of the upper outer cylinder and the inner wall of the lower outer cylinder near the joint of the upper outer cylinder and the lower outer cylinder, and the length of each wedge-shaped protrusion is less than one fourth of the minimum ring width of the water channel.
Preferably, the outer wall of the inner cylinder is horizontally and fixedly provided with a plurality of vibrating pieces, and the length of each vibrating piece is less than one third of the minimum ring width of the water channel.
Preferably, an annular sealing ring is arranged at the threaded joint of the inner wall of the upper outer cylinder and the inner wall of the lower outer cylinder.
Preferably, the outer sides of the upper outer cylinder and the lower outer cylinder are provided with vacuum sealing layers, and the thicknesses of the upper end and the lower end of each vacuum sealing layer are larger than the thickness of the middle of each vacuum sealing layer.
Preferably, the inner wall of the lower outer barrel is fixedly provided with annular bubble plates at the lower parts of the wedge-shaped bulges, the annular bubble plates are at least provided with two layers, a plurality of bubble holes penetrate through the annular bubble plates, and the diameters of the bubble holes are 3-10 mm.
Preferably, the inner side cylinder wall of the upper outer cylinder is obliquely and upwards arranged, the inner side cylinder wall of the upper outer cylinder is provided with a plurality of sound-absorbing plates, and the included angle between each sound-absorbing plate and the inner side cylinder wall of the upper outer cylinder is 30-60 degrees.
Preferably, a gate valve is arranged at a water outlet at the bottom of the outer wall of the lower outer barrel.
Preferably, sealing gaskets are further arranged at the joint of the bottom of the inner side of the upper outer cylinder and the inner cylinder and the joint of the top of the inner side of the lower outer cylinder and the hammer cap.
Preferably, the outer wall of the inner cylinder is provided with a porous aluminum plate on one side of the replacing bolt, the outer wall of the inner cylinder is provided with a sealing aluminum plate on one side of the outer cylinder, and the contact part of the inner cylinder and the replacing bolt is provided with a shock absorption gasket.
In conclusion, the utility model has the following beneficial effects:
1. the utility model combines the inner cylinder and the outer cylinder, has simple integral structure, can realize installation by a hoisting and screwing mode, has good sealing and shock-absorbing performance at the joint, is more stable in a working state and has longer service life.
2. According to the utility model, the water channel is arranged, seawater is poured into the water channel according to local conditions, the bubbles are driven into the water channel from the bottom through the bubble generator, and noises with different frequencies generated in the piling process can be effectively offset or reduced through the bubbles.
3. The utility model realizes effective reduction of noise by adopting a noise reduction material, a wedge-shaped noise reduction structure and a vacuum sealing layer, and has simple structure, use and relatively better effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-a-time driving, 2-a hammer cap, 3-a steel pipe pile, 4-an inner cylinder, 5-silencing cotton, 6-a porous aluminum plate, 7-a sealing aluminum plate, 8-a cushioning gasket, 9-an upper outer cylinder, 10-a lower outer cylinder, 11-a fastening bolt, 12-an annular sealing ring, 13-a sealing gasket, 14-a silencing plate, 15-a water channel, 16-a baffle, 17-an air inlet, 18-a bubble generator, 19-a water outlet, 20-a gate valve, 21-a wedge-shaped bulge, 22-a vibrating plate, 23-a vacuum sealing layer and 24-an annular bubble plate.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the utility model.
As shown in fig. 1, the noise reduction auxiliary device for the hydraulic pile hammer is characterized in that the noise reduction auxiliary device is externally arranged outside a hammer cap 2 and a steel pipe pile 3, a replacing hammer 1 is arranged in the hammer cap 2, the application comprises an inner cylinder 4 and an outer cylinder, an inner ring of the inner cylinder 4 is attached to the outer side of the hammer cap 2, the inner cylinder 4 is integrally of a hollow structure, silencing cotton 5 is filled in the hollow structure in the inner cylinder 4, a porous aluminum plate 6 is arranged on one side of the hammer cap 2 on the outer wall of the inner cylinder 4, a sealing aluminum plate 7 is arranged on one side of the outer cylinder on the outer wall of the inner cylinder 4, a cushioning gasket 8 is arranged at the contact position of the inner cylinder 4 and the replacing hammer 1, the cushioning gasket 8 can effectively reduce the simple hard contact of the inner cylinder and the replacing hammer, so as to improve the overall structure stability of the inner cylinder 4, a plurality of small holes are drilled on the porous aluminum plate 6, when noise waves pass through the small holes, the frequency spectrum of the noise can move to high frequency or ultrahigh frequency, audible components in the frequency spectrum can be obviously reduced, thereby reducing the interference and injury to people, further, the noise is further reduced by the inner noise reduction cotton 5, and the inner cylinder 4 is closely fitted to the outer side of the hammer cap 2, so that the generated noise can be quickly and effectively reduced.
The outer cylinder comprises an upper outer cylinder 9 and a lower outer cylinder 10, the inner side bottom of the upper outer cylinder 9 is arranged above the inner cylinder 4, the lower outer cylinder 10 is fixedly connected with the outer side of the upper outer cylinder 9 and the outer side of the lower outer cylinder 10 through a fastening bolt 11, an annular sealing ring 12 is arranged at the screwed joint of the inner wall of the upper outer cylinder 9 and the inner wall of the lower outer cylinder 10, the annular sealing ring 12 can effectively seal the joint of the upper outer cylinder 9 and the lower outer cylinder 10, a sealing gasket 13 is arranged at the joint of the inner side bottom of the upper outer cylinder 9 and the inner cylinder 4 and the joint of the inner side top of the lower outer cylinder 10 and the hammer cap 2, and the sealing gasket 13 can enhance the sealing stability between devices and avoid leakage.
The inner side cylinder wall of the upper outer cylinder 9 is obliquely arranged upwards, the inner side cylinder wall of the upper outer cylinder 9 is provided with a plurality of sound-absorbing plates 14, the included angle between each sound-absorbing plate 14 and the inner side cylinder wall of the upper outer cylinder 9 is 30-60 degrees, and the sound-absorbing plates 14 and the inner side cylinder wall of the upper outer cylinder 9 form an included angle which can reflect and weaken local sound waves.
The inboard section of thick bamboo wall of urceolus 10 sets up in the 3 outsides of steel-pipe pile and does not contact with the 3 outsides of steel-pipe pile down, go up urceolus 9 inner wall, be provided with water course 15 between 4 outer walls of inner tube and the urceolus 10 inner wall down, it is provided with the water inlet in the 15 tops of water course to go up urceolus 9, water inlet department is provided with baffle 16, it has the several bleeder vent to distribute on the baffle 16, urceolus 10 bottom is provided with air inlet 17 down, air inlet 17 bottom is fixed and is provided with bubble generator 18, urceolus 10 outer wall bottom side is provided with delivery port 19 down, delivery port 19 department is provided with gate valve 20, thereby realize the emission of the interior sea water of water course 15.
Go up 9 inner walls of urceolus and outer tube 10 inner walls down and be provided with the protruding 21 of several wedge near both junctions, the protruding 21 length of wedge is less than the one fourth of the 15 minimum ring widths of water course, and the protruding 21 of wedge can carry out multiple reflection sound with the sound wave until disappearing, and the sound wave weakens through the slow sound wave power of multiple reflection, has just formed the amortization, and the protruding 21 main distribution of wedge is in hammer cap 2 departments, can effectively carry out the amortization to key department.
The outer wall of the inner cylinder 4 is horizontally and fixedly provided with a plurality of vibrating reeds 22, the length of each vibrating reed 22 is smaller than one third of the minimum ring width of the water channel 15, and the vibrating reeds 22 can release sound waves subjected to primary treatment to enter seawater in the water channel 15.
Go up urceolus 9 and be provided with the airtight layer of vacuum 23 with urceolus 10 outside down, both ends thickness is greater than middle thickness about the airtight layer of vacuum 23, because airtight layer of vacuum 23 both has the sound insulation effect and also has certain thermal-insulated effect simultaneously, eliminate the process at the sound wave and can produce a large amount of heats, wherein be particularly great near hammer cap 2 department, thin airtight layer of vacuum 23 in the middle of can realizing certain sound insulation also can in time spill the heat, improve the whole life-span of device.
The inner wall of the lower outer barrel 10 is further fixedly provided with an annular bubble plate 24 on the lower portion of the wedge-shaped protrusion 21, the annular bubble plate 24 is at least provided with two layers, a plurality of bubble holes are formed in the annular bubble plate 24 in a penetrating mode, the aperture of each bubble hole is 3-10mm, the bubble generator 18 is matched with the annular bubble plate 24 to generate a large number of bubbles with different diameters, when sound waves are transmitted to seawater in the water channel 15, the sound waves collide with the bubbles in the seawater, the sound waves break the bubbles, the bubbles weaken the sound waves, and as the specific heat capacity of the seawater is larger, the temperature rise is slow relative to fresh water, relatively much working time can be borne, and the work is more stable.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model.
Claims (10)
1. A noise reduction auxiliary device for a hydraulic pile hammer is characterized by further comprising an inner barrel and an outer barrel, wherein the inner ring of the inner barrel is attached to the outer side of the hammer cap, the inner barrel is of a hollow structure, noise reduction cotton is filled in the hollow structure in the inner barrel, the outer barrel comprises an upper outer barrel and a lower outer barrel, the bottom of the inner side of the upper outer barrel is arranged above the inner barrel, the outer sides of the upper outer barrel and the lower outer barrel are fixedly connected through fastening bolts, the inner side barrel wall of the lower outer barrel is arranged outside a steel pipe pile and does not contact with the outer side of the steel pipe pile, a water channel is arranged between the inner wall of the upper outer barrel, the outer wall of the inner barrel and the inner wall of the lower outer barrel, a water inlet is arranged above the water channel at the top of the upper outer barrel, a baffle is arranged at the water inlet, and a plurality of air holes are distributed in the baffle, the bottom of the lower outer barrel is provided with an air inlet, the bottom of the air inlet is fixedly provided with a bubble generator, and the side edge of the bottom of the outer wall of the lower outer barrel is provided with a water outlet.
2. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: and a plurality of wedge-shaped bulges are arranged near the joint of the inner wall of the upper outer cylinder and the inner wall of the lower outer cylinder, and the length of each wedge-shaped bulge is less than one fourth of the minimum ring width of the water channel.
3. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: the outer wall of the inner cylinder is horizontally and fixedly provided with a plurality of vibrating pieces, and the length of each vibrating piece is less than one third of the minimum ring width of the water channel.
4. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: and an annular sealing ring is arranged at the threaded joint of the inner wall of the upper outer barrel and the inner wall of the lower outer barrel.
5. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: and the outer sides of the upper outer cylinder and the lower outer cylinder are provided with vacuum sealing layers, and the thicknesses of the upper end and the lower end of each vacuum sealing layer are greater than the thickness of the middle part of each vacuum sealing layer.
6. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: the inner wall of the lower outer barrel is fixedly provided with annular bubble plates at the lower parts of the wedge-shaped bulges, the annular bubble plates are at least provided with two layers, a plurality of bubble holes penetrate through the annular bubble plates, and the diameters of the bubble holes are 3-10 mm.
7. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: the cylinder wall of the inner side of the upper outer cylinder is obliquely and upwards arranged, the cylinder wall of the inner side of the upper outer cylinder is provided with a plurality of sound-absorbing plates, and the included angle between each sound-absorbing plate and the cylinder wall of the inner side of the upper outer cylinder is 30-60 degrees.
8. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: and a gate valve is arranged at a water outlet at the bottom of the outer wall of the lower outer barrel.
9. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: sealing gaskets are arranged at the joint of the bottom of the inner side of the upper outer barrel and the inner barrel and the joint of the top of the inner side of the lower outer barrel and the hammer cap.
10. A noise reduction aid for a hydraulic pile driving hammer as set forth in claim 1, wherein: the utility model discloses a hammer structure, including inner tube, hammer cap, outer tube, hammer cap, sealing aluminum plate, inner tube outer wall, hammer cap, outer tube outer wall sets up to porous aluminum plate in hammer cap one side, inner tube outer wall is sealing aluminum plate in urceolus one side, the inner tube is provided with the bradyseism gasket with hammer cap contact department.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711869.2U CN215801612U (en) | 2021-04-08 | 2021-04-08 | Noise reduction auxiliary device for hydraulic pile hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711869.2U CN215801612U (en) | 2021-04-08 | 2021-04-08 | Noise reduction auxiliary device for hydraulic pile hammer |
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| Publication Number | Publication Date |
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| CN215801612U true CN215801612U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120711869.2U Active CN215801612U (en) | 2021-04-08 | 2021-04-08 | Noise reduction auxiliary device for hydraulic pile hammer |
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| CN (1) | CN215801612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457799A (en) * | 2022-02-24 | 2022-05-10 | 中天科技集团海洋工程有限公司 | Piling noise reduction device for offshore wind power |
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2021
- 2021-04-08 CN CN202120711869.2U patent/CN215801612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457799A (en) * | 2022-02-24 | 2022-05-10 | 中天科技集团海洋工程有限公司 | Piling noise reduction device for offshore wind power |
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