CN111554259B - Silencer of ocean hydraulic pile hammer - Google Patents
Silencer of ocean hydraulic pile hammer Download PDFInfo
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- CN111554259B CN111554259B CN202010295100.7A CN202010295100A CN111554259B CN 111554259 B CN111554259 B CN 111554259B CN 202010295100 A CN202010295100 A CN 202010295100A CN 111554259 B CN111554259 B CN 111554259B
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- silencing
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- cylinder
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Life Sciences & Earth Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a silencing device of a marine hydraulic pile hammer, which comprises a silencing outer cylinder and a silencing inner cylinder; the silencing outer cylinder comprises an outer layer plate, an inner layer plate and a top plate, wherein the outer layer plate is sleeved on the inner layer plate, a gap is reserved between the outer layer plate and the inner layer plate, the top parts of the outer layer plate and the inner layer plate are connected through the top plate, and a water filling port is formed in the top plate; the bottoms of the outer layer plate and the inner layer plate are freely opened; the inside of the silencing inner cylinder is hollow, a radial silencing hole is formed in the silencing inner cylinder, and a vibrating piece is arranged at one end of the silencing hole, facing the gap between the inner layer plate and the outer layer plate. The silencer of the marine hydraulic pile hammer transmits sound waves through the silencing holes and converts the sound waves into vibration of the vibration plate, then absorbs energy of the vibration plate through water flow, greatly reduces noise generated by alternate driving through a double conversion means, and improves the sound environment of a construction site.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a silencing device for a marine hydraulic pile hammer.
Background
Fig. 1 shows a pile foundation according to the prior art, and a pile cap and a piling are generally installed on the surface of the pile foundation. The hydraulic pile hammer periodically falls down and impacts the pile foundation to replace the pile, the pile foundation gradually sinks and goes deep into the soil after being indirectly impacted, and finally stable installation of the pile foundation is realized. The piling hammer and the alternate piling hammer are made of steel, the noise generated in the impact process of the piling hammer and the alternate piling hammer is very huge, and in the prior art, the noise is reduced by only arranging the sound absorption pad at the bottom of the piling hammer, so that compared with the piling hammer weighing several tons or even more than ten tons, the simple silencing means has very limited effect.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art lacks effective silencing measures for a pile hammer, so that the noise of a construction site is huge.
In order to solve the technical problems, the invention adopts the following technical scheme: a silencing device of a marine hydraulic pile hammer comprises a silencing outer cylinder and a silencing inner cylinder;
the silencing outer cylinder comprises an outer layer plate, an inner layer plate and a top plate, wherein the outer layer plate is sleeved on the inner layer plate, a gap is reserved between the outer layer plate and the inner layer plate, the top parts of the outer layer plate and the inner layer plate are connected through the top plate, and a water filling port is formed in the top plate; the bottoms of the outer layer plate and the inner layer plate are freely opened;
the inside of the silencing inner barrel is hollow, a radial silencing hole is formed in the silencing inner barrel, a vibrating piece is arranged at one end of the silencing hole, facing the gap between the inner layer plate and the outer layer plate, of the silencing hole, and the vibrating piece can be a metal sheet or a plastic sheet.
When the silencer is applied, the silencing inner cylinder is required to be sleeved on the tizoic, and the silencing inner cylinder is required to be attached to the outer surface of the tizoic; during the whole working period, water is required to be continuously injected into the water filling port by using a water pump, the gap between the outer layer plate and the inner layer plate is filled with water, and the water flow continuously downwards forms a water curtain around the pile foundation.
The alternate driving is generally cylindrical, and three types of noise are mainly generated after the alternate driving is impacted by the pile driving hammer:
1. the upper surface vibration of the piling machine generates upward-propagating sound waves (essentially air vibration), and the sound waves mainly strike the piling hammer and the inner layer plate, so that the energy consumption is faster;
2. the side vibration of the tizor generates radial sound waves in the horizontal direction, and the sound waves are transmitted through the air in the silencing hole (the inner wall of the silencing hole can absorb part of energy) so as to cause the silencing hole to vibrate towards the vibrating piece at one end of the gap between the inner layer plate and the outer layer plate, the vibrating piece is wrapped by water flow between the inner layer plate and the outer layer plate, and the water flow absorbs the energy of the vibrating piece, so that the silencing effect is achieved;
3. the pile foundation of bottom is transmitted to in the beating, and the side vibration of pile foundation produces the sound wave, and this kind of sound wave itself is weaker to can further be absorbed the energy by the water curtain around the pile foundation, reach the effect of amortization.
Furthermore, the silencing hole is of a fold line-shaped structure or a bent structure, and the bent shape is beneficial to self sound absorption of the silencing hole.
Furthermore, the inner ring of the silencing inner cylinder is in a truncated cone shape, and correspondingly, the tizor should be designed into a truncated cone shape matched with the silencing inner cylinder; the round table-shaped structure can ensure that the silencing inner cylinder is accurately sleeved on the tizow and the inner surface of the silencing inner cylinder is attached to the outer surface of the tizow.
Further, the inside of amortization inner tube is filled with first amortization cotton, and first amortization cotton assists to inhale sound.
Further, the middle part of the silencing outer cylinder is provided with a radial fastening bolt, and the whole silencing device and the tizor can be fixed by using the fastening bolt.
Further, the length of the outer layer plate is larger than that of the inner layer plate, so that the tail of the outer layer plate is longer, a gap is reserved between the tail of the outer layer plate and the pile foundation, and the longer tail design is beneficial to forming a stable water curtain on the outer surface of the pile foundation. Further, the silencing outer cylinder further comprises an additional cylinder, the additional cylinder is fixed at the bottom of the outer layer plate through a screw, a mounting hole is formed in the bottom of the additional cylinder, and more additional cylinders can be continuously mounted through the mounting hole; the specific number of the additional cylinders can be freely selected according to the height of the pile foundation, and the additional cylinders are used for prolonging the outer layer plate.
Further, the inner wall of the inner layer plate is provided with one or more circles of silencing plates, the cross sections of the silencing plates incline and point to the central axis of the inner layer plate, and the silencing plates are used for assisting in absorbing upward-transmitted sound waves generated on the top surface of the tizor.
Further, the outer surface of the outer layer plate is wrapped with second silencing cotton, and the second silencing cotton is also used for assisting in sound absorption. Further, an exhaust hole is formed in the top plate; the water filling port is always in an excessive water filling state, and the exhaust holes can enable gaps between the outer layer plate and the inner layer plate to be fully filled with water without bubbles.
The beneficial effects are that: (1) The silencer of the marine hydraulic pile hammer transmits sound waves through the silencing holes and converts the sound waves into vibration of the vibration plate, then absorbs energy of the vibration plate through water flow, greatly reduces noise generated by alternate driving through a double conversion means, and improves the sound environment of a construction site. (2) The silencer of the marine hydraulic pile hammer forms a water curtain on the surface of the pile foundation by using the silencing outer cylinder, and absorbs sound waves generated on the side surface of the pile foundation by using the water curtain, so that the effect of reducing noise is achieved. (3) According to the silencer of the marine hydraulic pile hammer, the silencing hole is designed to be of a bent structure, and sound waves are reflected for multiple times when passing through the silencing hole, so that energy is consumed, and noise is reduced. (4) According to the silencer of the marine hydraulic pile hammer, one or more circles of silencing plates are arranged above the alternate driving, and the silencing plates enable upward-spreading sound waves generated on the upper surface of the alternate driving to be reflected for multiple times, so that the energy of the sound waves is consumed.
Drawings
Fig. 1 is a block diagram of a prior art pile foundation.
Fig. 2 is a structural view of the muffler device of embodiment 1.
Fig. 3 is a top view of fig. 2.
Fig. 4 is an enlarged view of fig. 2 a.
Wherein: 100. a silencing outer cylinder; 110. an outer layer plate; 120. an inner layer plate; 130. a top plate; 131. a water filling port; 132. an exhaust hole; 140. an additional barrel; 141. a mounting hole; 150. a second noise reduction cotton; 160. a screw; 170. a fastening bolt; 180. a muffler plate; 200. a silencing inner cylinder; 210. a sound deadening hole; 220. a vibrating piece; 230. a first noise-reducing cotton; 300. tizor; 400. pile foundation; 500. and (5) a pile cap.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Example 1
As shown in fig. 2 to 3, a silencing device of a marine hydraulic pile hammer includes a silencing outer cylinder 100 and a silencing inner cylinder 200;
the silencing outer cylinder 100 comprises an outer layer plate 110, an inner layer plate 120, a top plate 130, an additional cylinder 140 and second silencing cotton 150, wherein the outer layer plate 110 is sleeved on the inner layer plate 120, a gap is reserved between the outer layer plate 110 and the inner layer plate 120, the tops of the outer layer plate 110 and the inner layer plate 120 are connected through the top plate 130, and a water filling port 131 and a plurality of exhaust holes 132 are formed in the top plate 130;
the bottoms of the outer layer plate 110 and the inner layer plate 120 are freely opened, the bottom of the outer layer plate 110 is longer than the bottom of the inner layer plate 120, the bottom of the outer layer plate 110 is connected with an additional cylinder 140 through a screw 160, and the bottom of the additional cylinder 140 is provided with a mounting hole 141; the middle part of the outer plate 110 is provided with a radial fastening bolt 170; the outer surface of the outer laminate 110 is wrapped with the second soundproof cotton 150;
the inner wall of the inner plate 120 is provided with a plurality of circles of silencing plates 180, the cross section of the silencing plates 180 is inclined and points to the central axis of the inner plate 120, and the silencing plates 180 are positioned above the timak 300; the middle part of the inner layer plate 120 is grooved and embedded into the silencing inner cylinder 200;
as shown in fig. 4, the inside of the silencing inner tube 200 is hollow, a radial silencing hole 210 is provided in the silencing inner tube 200, the silencing hole 210 has a fold-line structure, and a vibrating piece 220 is provided at one end of the silencing hole 210 facing the gap between the inner plate 120 and the outer plate 110; the inside of the silencing inner cylinder 200 is filled with the first silencing cotton 230.
When the silencer of the embodiment is applied, the silencing inner cylinder 200 needs to be sleeved on the tieda 300, wherein the inner ring of the silencing inner cylinder 200 is in a round table shape, and correspondingly, the tieda 300 is also designed into a round table shape matched with the silencing inner cylinder 200; the truncated cone-shaped structure can ensure that the silencing inner cylinder 200 is accurately sleeved on the tieda 300, and the inner surface of the silencing inner cylinder 200 is attached to the outer surface of the tieda 300; after the silencing inner cylinder 200 is sleeved on the tieda 300, a worker can completely fix the whole silencing device and the tieda 300 by rotating the fastening bolt 170;
the silencer of this embodiment needs to be configured with a water pump when in use, and needs to use the water pump to continuously and excessively fill water into the water filling port 131 in the whole pile hammer striking process (as the silencer of this embodiment is mainly used for marine hydraulic pile hammers, the silencer can be directly used for filling seawater), the gap between the outer layer plate 110 and the inner layer plate 120 is filled with water, and water curtain is formed around the pile foundation 400 by continuous downward water flow (the hollow arrow in fig. 2 is the water flow direction).
As shown in fig. 2, the alternative driving 300 is generally cylindrical, the alternative driving 300 is mounted on the pile foundation 400 through the pile cap 500, and three types of noise are mainly generated after the alternative driving 300 is impacted by the pile hammer:
1. the upper surface vibration of the alternative drive 300 generates upwardly propagating sound waves (essentially air vibration) that primarily impinge on the hammer, the inner plate 120 and the muffler plate 180, which are reflected multiple times and thus consume energy rapidly;
2. the side vibration of the tieda 300 generates radial sound waves in the horizontal direction, and the sound waves propagate through the air in the sound attenuation holes 210 (the bent inner wall of the sound attenuation holes 210 can absorb part of energy) so as to cause the sound attenuation holes 210 to vibrate towards the vibrating piece 220 on one end of the gap between the inner layer plate 120 and the outer layer plate 110, the vibrating piece 220 is wrapped by the water flow between the inner layer plate 120 and the outer layer plate 110, and the water flow absorbs the energy of the vibrating piece 220, so that the sound attenuation effect is achieved;
3. the tibeak 300 transmits vibration to the pile foundation 400 at the bottom, the side vibration of the pile foundation 400 generates sound waves, and the sound waves are weak and can be further absorbed by the water curtain around the pile foundation 400 to achieve the silencing effect.
Although embodiments of the present invention have been described in the specification, these embodiments are presented only, and should not limit the scope of the present invention. Various omissions, substitutions and changes in the form of examples are intended in the scope of the invention.
Claims (10)
1. The utility model provides a silencing device of ocean hydraulic pile hammer which characterized in that: comprises a silencing outer cylinder (100) and a silencing inner cylinder (200);
the silencing outer cylinder (100) comprises an outer layer plate (110), an inner layer plate (120) and a top plate (130), wherein the outer layer plate (110) is sleeved on the inner layer plate (120), a gap is reserved between the outer layer plate (110) and the inner layer plate (120), the tops of the outer layer plate (110) and the inner layer plate (120) are connected through the top plate (130), and a water filling port (131) is formed in the top plate (130); the bottoms of the outer layer plate (110) and the inner layer plate (120) are freely opened;
the inside of the silencing inner cylinder (200) is hollow, a radial silencing hole (210) is formed in the silencing inner cylinder (200), and a vibrating piece (220) is arranged at one end, facing the gap between the inner layer plate (120) and the outer layer plate (110), of the silencing hole (210).
2. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the silencing hole (210) is of a fold line-shaped structure or a bent structure.
3. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the inner ring of the silencing inner cylinder (200) is in a truncated cone shape.
4. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the interior of the silencing inner cylinder (200) is filled with first silencing cotton (230).
5. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the middle part of the silencing outer cylinder (100) is provided with a radial fastening bolt (170).
6. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the outer plate (110) has a length that is greater than the length of the inner plate (120).
7. The marine hydraulic pile hammer silencing device according to claim 6, wherein: the silencing outer cylinder (100) further comprises an additional cylinder (140), the additional cylinder (140) is fixed at the bottom of the outer layer plate (110) through a screw (160), and a mounting hole (141) is formed in the bottom of the additional cylinder (140).
8. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the inner wall of the inner layer plate (120) is provided with one or more circles of silencing plates (180), and the cross section of each silencing plate (180) is inclined and points to the central axis of the inner layer plate (120).
9. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the outer surface of the outer layer plate (110) is wrapped with second noise-reducing cotton (150).
10. The marine hydraulic pile hammer silencing device according to claim 1, wherein: the top plate (130) is provided with an exhaust hole (132).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295100.7A CN111554259B (en) | 2020-04-15 | 2020-04-15 | Silencer of ocean hydraulic pile hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295100.7A CN111554259B (en) | 2020-04-15 | 2020-04-15 | Silencer of ocean hydraulic pile hammer |
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| Publication Number | Publication Date |
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| CN111554259A CN111554259A (en) | 2020-08-18 |
| CN111554259B true CN111554259B (en) | 2023-07-28 |
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| CN202010295100.7A Active CN111554259B (en) | 2020-04-15 | 2020-04-15 | Silencer of ocean hydraulic pile hammer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113463634B (en) * | 2021-09-03 | 2021-11-26 | 南通中舟风电工程技术有限公司 | Silencing device of marine hydraulic pile hammer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60145636U (en) * | 1984-03-07 | 1985-09-27 | 東洋ゴム工業株式会社 | Anti-vibration rubber device |
| JP2604246Y2 (en) * | 1993-06-10 | 2000-04-24 | 鈴木総業株式会社 | Exhaust top of hot water heater etc. |
| JP3866654B2 (en) * | 2002-01-23 | 2007-01-10 | 本田技研工業株式会社 | Noise reduction device |
| CN203433805U (en) * | 2013-09-09 | 2014-02-12 | 中铁隆昌铁路器材有限公司 | Noise reduction apparatus used for mechanical equipment |
| CN204204407U (en) * | 2013-12-13 | 2015-03-11 | 李巍巍 | A kind of sound insulating material of open celled foam fill gaps damping rubber |
| CN203701114U (en) * | 2014-01-27 | 2014-07-09 | 广东明阳风电产业集团有限公司 | Novel offshore wind power steel pipe pile noise removing steel cofferdam device |
| CN104532975B (en) * | 2015-01-07 | 2017-02-01 | 大同市三建集团有限公司 | Noise reducing and sound insulating water curtain structure |
| US11847997B2 (en) * | 2016-11-30 | 2023-12-19 | Basf Se | Aqueous polymer emulsions for sound damping applications |
| CN207144034U (en) * | 2017-08-22 | 2018-03-27 | 泰安夯神机械有限公司 | A kind of jump bit vibration absorber |
| CN207998847U (en) * | 2018-01-31 | 2018-10-23 | 江苏海上龙源风力发电有限公司 | A kind of offshore wind farm pile sinking noise reduction device |
| CN208968386U (en) * | 2018-09-11 | 2019-06-11 | 交通运输部天津水运工程科学研究所 | A kind of drenching installation that can effectively slow down reef explosion construction shock wave |
| CN110512604B (en) * | 2019-08-21 | 2021-04-06 | 武汉理工大学 | Array truncated conical shell bubble curtain underwater piling noise reduction device |
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