阅读说明：本技术 一种海洋液压打桩锤的消音装置 (Silencing device of marine hydraulic pile hammer ) 是由 季刚 于 2021-09-03 设计创作，主要内容包括：本发明提供一种海洋液压打桩锤的消音装置,包括：围堰,内顶壁安装有击打帽；所述击打帽与替打和桩帽相适配套装,且内设有用于在冲击替打时的消音结构；囊体结构,安装在所述围堰的内侧壁,且包括弹性的囊体和顶杆；所述囊体设有排气部,对所述囊体充气,通过顶杆驱动排气部对囊体泄压,使该囊体存在膨胀与收缩依次循环交替的两种状态。本发明,利用囊体交替的膨胀和收缩、气泡降噪、水幕降噪和真空降噪,使打桩作业产生的噪音几乎无法往外传播,从而避免噪音对工作人员造成危害、以及对海洋生物产生恶劣的影响,同时也避免产生噪音污染。(The invention provides a silencing device of an ocean hydraulic pile hammer, which comprises: cofferdam, the inner roof installs and hits the cap; the beating cap is matched and sleeved with the replacing beating cap and the pile cap, and a silencing structure used for impacting the replacing beating is arranged in the beating cap; the bag body structure is arranged on the inner side wall of the cofferdam and comprises an elastic bag body and an ejector rod; the air-permeable bag body is provided with an exhaust part, the air-permeable bag body is inflated, and the exhaust part is driven by the ejector rod to release pressure to the bag body, so that the bag body has two states of expansion and contraction which are sequentially and circularly alternated. According to the invention, the alternative expansion and contraction of the capsule body, the bubble noise reduction, the water curtain noise reduction and the vacuum noise reduction are utilized, so that the noise generated by the piling operation can hardly be transmitted outwards, thereby avoiding the harm of the noise to workers and the adverse influence on marine organisms, and simultaneously avoiding the noise pollution.)

1. A silencing device for a marine hydraulic pile hammer, comprising:

a cofferdam (4), wherein the inner top wall is provided with a striking cap (7);

the beating cap (7) is matched and sleeved with the replacing beating cap (1) and the pile cap (2), and a silencing structure used for impacting the replacing beating is arranged in the beating cap;

the capsule structure (11) is arranged on the inner side wall of the cofferdam (4) and comprises an elastic capsule (14) and an ejector rod (15);

the capsule body (14) is provided with an exhaust part (16),

the air inflation of the air bag body (14) is realized, the air exhaust part (16) is driven by the ejector rod (15) to release the pressure of the air bag body (14), and the air bag body (14) has two states of sequential and cyclic alternation of expansion and contraction.

2. The silencing device of marine hydraulic pile hammer as claimed in claim 1, wherein the silencing structure comprises a plurality of cavities (8) formed in the striking cap (7), the cavities (8) are communicated with each other, and the cavities (8) on the outer side are connected with pipe connecting channels (9).

3. The silencing device of the marine hydraulic pile hammer as recited in claim 2, wherein the adjacent cavities (8) have reinforcing ribs (10) therebetween, the cavity (8) on the outer side is connected with a water outlet channel (28), the water outlet channel (28) is arranged in the striking cap (7) and along the side surfaces of the replacement hammer (1) and the pile cap (2), and the inner diameter of the pipeline connecting the pipe connecting channel (9) and the cavity (8) is larger than that of the water outlet channel (28).

4. The silencing device for marine hydraulic pile hammer as recited in claim 1, wherein the striking cap (7) is spaced apart from the cofferdam (4) by a distance (27), the bladder structures (11) are arranged in several groups and are uniformly spaced apart from top to bottom on the inner side wall of the cofferdam (4), and further comprise an upper plate (12) and a lower plate (13), the bladder (14) is mounted on the upper plate (12), and the ejector rod (15) is mounted on the lower plate (13).

5. The silencing device of the marine hydraulic pile hammer as recited in claim 1, wherein the exhaust part (16) comprises a housing (17) arranged in the bag body (14), the side surface and the bottom of the housing (17) are respectively provided with a side opening (19) and an air outlet (29) communicated with the cavity (18), a sealing block (20) used for blocking the air outlet (29) is arranged in the cavity (18) of the housing (17), and the position of the air outlet (29) is opposite to that of the ejector rod (15).

6. The silencing device of the marine hydraulic pile hammer as claimed in claim 5, wherein a chute (23) is formed in the top of the cavity (18), the sealing block (20) slides with the chute (23) through a support rod (22), and sealing block seats (21) are arranged on two sides above the air outlet (29).

7. A silencer device for a marine hydraulic pile hammer according to claim 5, characterized in that a valve structure (25) like a "body vein valve" is arranged in the side opening (19), and a communication channel (24) is arranged on the sealing block (20).

8. A silencer assembly for marine hydraulic pile driving hammer as claimed in claim 4, wherein symmetrical grid plates (30) are mounted on the upper plate (12), the bladder (14) is located between the grid plates (30), and the bladder (14) has elastic tension wires (26) therein.

9. The silencing device of marine hydraulic pile hammer as recited in claim 1, characterized in that the inner side wall of the cofferdam (4) is provided with a vacuum chamber (5), and the vacuum chamber (5) is filled with silencing cotton (6).

Technical Field

The invention relates to the technical field of noise reduction equipment, in particular to a silencing device of an ocean hydraulic pile hammer.

Background

As shown in fig. 1, in marine operations, it is often necessary to build an offshore platform to facilitate the operations; when building offshore platforms, it is an important step to fix the pile foundation 3 with a pile hammer. In the process of striking the pile foundation 3, the impact of the pile hammer can generate great noise, which brings serious noise pollution problem to the construction environment; these noises are not only harmful to the workers, but also have a bad influence on marine life. In the prior art, a pile cap 2 and a pile replacement 1 are generally arranged on the surface of a pile foundation 3. The hydraulic pile hammer periodically falls and impacts the replacing driving 1, the pile foundation 3 gradually sinks and goes deep into the soil after being indirectly impacted, and finally the stable installation of the pile foundation 3 is realized. The piling hammer and the secondary driving hammer 1 are both made of steel, and the noise generated by the piling hammer and the secondary driving hammer in the impacting process is very large. The application publication number CN111554259A discloses a scheme of a silencer of a marine hydraulic pile hammer, which comprises a silencing outer cylinder and a silencing inner cylinder; the amortization urceolus includes outer plywood, inner plating and roof etc. has solved some problems that exist among the prior art: the noise generated by replacing the drilling tool is reduced, and the sound environment of a construction site is improved. However, the scheme still has the following defects: roof and instead still have a plurality of space layers between beating, space layer can produce the noise when beating the roof like this, also does not do benefit to the improvement roof intensity moreover, utilizes the water curtain amortization, and the amortization mode remains further to be strengthened and improves, and pile foundation vibrations radiation remains further to be reduced to the outer seismic sound of additional section of thick bamboo.

Disclosure of Invention

The invention aims to provide a silencing device of an ocean hydraulic pile hammer, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a muffler assembly for a marine hydraulic pile hammer, comprising:

cofferdam, the inner roof installs and hits the cap;

the beating cap is matched and sleeved with the replacing beating cap and the pile cap, and a silencing structure used for impacting the replacing beating is arranged in the beating cap;

the bag body structure is arranged on the inner side wall of the cofferdam and comprises an elastic bag body and an ejector rod;

the bag body is provided with an air exhaust part,

inflating the bag body, and driving the exhaust part to release pressure to the bag body through the ejector rod, so that the bag body has two states of expansion and contraction which are sequentially and circularly alternated;

in said expanded state, the bladder is adapted to attenuate sound;

in the contracted state, the air is released from the bag body and impacts the water around the pile driver, the pile cap and the pile foundation to generate undercurrent with bubbles.

Preferably, the silencing structure comprises a plurality of cavities arranged in the striking cap, the cavities are communicated, and the cavities positioned on the outer side are connected with pipe joint channels.

Preferably, reinforcing ribs are arranged between adjacent cavities, the cavity positioned on the outer side is connected with a water outlet channel, the water outlet channel is arranged in the hitting cap and along the side surface of the replacing pile cap, and the inner diameter of a pipeline communicated with the pipe connecting channel and the cavity is larger than that of the water outlet channel.

Preferably, intervals are arranged between the hitting caps and the cofferdam, the bag body structures are provided with a plurality of groups, the bag body structures are uniformly distributed on the inner side wall of the cofferdam at intervals from top to bottom, the bag body structures further comprise an upper plate and a lower plate, the bag body structures are mounted on the upper plate, and the ejector rods are mounted on the lower plate.

Preferably, the exhaust portion is including establishing the dustcoat in the capsule, the side and the bottom of dustcoat are equipped with side opening and the gas outlet with cavity UNICOM respectively, are equipped with the sealing piece that is used for plugging up the gas outlet in the cavity of dustcoat, the gas outlet position is relative with the ejector pin position.

Preferably, the top in the cavity is provided with a sliding chute, the sealing block slides with the sliding chute through a support rod, and sealing block seats are arranged on two sides above the air outlet.

Preferably, a valve structure similar to a human body venous valve is arranged in the side opening, so that unidirectional gas/liquid flow can be controlled, and a communication channel is arranged on the sealing block.

Preferably, symmetrical grid plates are installed on the upper plate, the capsule body is located between the grid plates, and elastic pull wires are arranged in the capsule body.

Preferably, the inner side wall of the cofferdam is provided with a vacuum cavity, and the vacuum cavity is filled with silencing cotton.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the hitting cap is arranged for hitting by the pile hammer, the cavity is arranged, the silencing cotton can be filled in the cavity, and a pipe connecting channel on the side surface of the hitting cap is connected with a liquid medium such as water, so that the energy generated by vibration is absorbed, and the noise generated by vibration can be buffered and absorbed to serve as the first silencing. Through having set up water outlet channel, can replace beating with forming the water curtain around the pile cap, utilize the water curtain to absorb and replace the sound wave that beats and pile cap side produced, reach the effect of noise reduction, can absorb and hit the cap and replace the heat that the effect produced of beating, improve the life of device. The alternative expansion and contraction of the bag body generates a dark current with bubbles. These bubbles act as a second sound damping barrier. The change of the volume of the capsule body and the cavity of the capsule body can be used as a third noise reduction. Through the vacuum cavity and the silencing cotton filled in the vacuum cavity, the noise radiation of the replacement driving, the pile cap and the vibration of the pile foundation can be isolated outside the cofferdam, and the noise reduction effect of the silencing device is further ensured.

According to the invention, the alternative expansion and contraction of the capsule body, the bubble noise reduction, the water curtain noise reduction and the vacuum noise reduction are utilized, so that the noise generated by the piling operation can hardly be transmitted outwards, thereby avoiding the harm of the noise to workers and the adverse influence on marine organisms, and simultaneously avoiding the noise pollution.

Drawings

FIG. 1 is a schematic structural view of a prior art pile foundation;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic diagram of the invention showing the generation of a bubble-carrying dark current upon bladder deflation;

FIG. 4 is a schematic view of the bladder body and the elastic pull wire therein according to the present invention;

FIG. 5 is an enlarged view A of FIG. 2 according to the present invention;

FIG. 6 is a schematic view of the seal of FIG. 5 according to the present invention shown open;

FIG. 7 is a schematic view of the support rod and the sliding groove of the present invention.

In the figure: 1 instead dozen, 2 pile caps, 3 pile foundations, 4 cofferdams, 5 vacuum cavities, 6 silencing cotton, 7 beating caps, 8 cavities, 9 pipe connecting channels, 10 reinforcing ribs, 11 bag body structures, 12 upper plates, 13 lower plates, 14 bag bodies, 15 ejector rods, 16 exhaust parts, 17 outer covers, 18 cavities, 19 side openings, 20 sealing blocks, 21 sealing block seats, 22 supporting rods, 23 sliding grooves, 24 communicating channels, 25 'human body vein valve's valve structures, 26 elastic pull wires, 27 intervals, 28 water outlet channels, 29 air outlets, 30 grid plates, 31 air inlet pipes and 32 bubbles.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 7, the present invention provides a technical solution:

a muffler assembly for a marine hydraulic pile hammer, comprising:

a strike cap 7 is arranged on the inner top wall of the cofferdam 4;

the beating cap 7 is matched and sleeved with the replacing beating 1 and the pile cap 2, and a silencing structure used for impacting the replacing beating is arranged in the beating cap;

the capsule structure 11 is arranged on the inner side wall of the cofferdam 4 and comprises an elastic capsule 14 and an ejector rod 15;

the bladder 14 is provided with an exhaust 16,

inflating the bag body 14, and driving the exhaust part 16 to release pressure to the bag body 14 through the mandril 15, so that the bag body 14 has two states of sequential and cyclic alternation of expansion and contraction;

in said expanded state, the bladder 14 is used to dampen sound;

in the deflated state, the bladder 14 emits gas which impacts the body of water surrounding the piling 1, cap 2 and piling 3, creating a trickle with bubbles 32.

Specifically, amortization structure is including seting up a plurality of cavity 8 in hitting cap 7, UNICOM between the cavity 8, the cavity 8 that is located the outside is connected with pipe joint passageway 9. The reinforcing ribs 10 are arranged between the adjacent cavities 8, the cavities 8 positioned on the outer side are connected with a water outlet channel 28, the water outlet channel 28 is arranged in the beating cap 7, and along the side surfaces of the pile 1 and the pile cap 2, the inner diameter of a pipeline communicated with the pipe connecting channel 9 and the cavities 8 is larger than that of the water outlet channel 28.

As shown in fig. 1, the hydraulic pile hammer is adopted to periodically fall and impact the alternate driving 1, the pile foundation 3 is gradually sunk and goes deep into the soil after being indirectly impacted, and finally the stable installation of the pile foundation 3 is realized. The piling hammer and the secondary driving hammer 1 are both made of steel, and the noise generated by the piling hammer and the secondary driving hammer in the impacting process is very large. The invention, as shown in fig. 2, can be used for buffering and absorbing the noise generated by the vibration as the first noise reduction by arranging the striking cap 7 for striking the pile hammer, arranging the cavity 8, filling the sound-absorbing cotton in the cavity 8, and connecting a liquid medium such as water through one pipe connecting channel 9 on the side surface of the striking cap 7. Because of periodic beating, adopt stiffening rib 10 can increase and beat the intensity of cap 7 and with regard 1 faying face, through having set up exhalant canal 28, the internal diameter of exhalant canal 28 is less than the internal diameter of pipe connection passageway 9, under the circumstances that the cavity 8 of guaranteeing mutual UNICOM is abundant, make rivers continuously downwards, can form the water curtain around regard 1 and pile cap 2, utilize the water curtain to absorb the sound wave of taking a 1 and pile cap 2 side production, reach the effect of noise reduction, and cavity 8 and exhalant canal 28 have continuous rivers, can absorb and beat the cap 7 and take a 1 effect produced heat with regard to, improve the life of device.

Specifically, a gap 27 is formed between the hitting cap 7 and the cofferdam 4, the capsule structure 11 has a plurality of groups, and is uniformly distributed on the inner side wall of the cofferdam 4 at intervals from top to bottom, and further includes an upper plate 12 and a lower plate 13, the capsule 14 is mounted on the upper plate 12, the ejector rod 15 is mounted on the lower plate 13, two grid plates 30 are mounted on the upper plate 12, the capsule 14 is located between the two grid plates 30, and an elastic pull wire 26 is arranged in the capsule 14. In the invention, as shown in fig. 2 and 5, a liquid medium can be introduced into the top of the partition 27, the liquid medium is consistent with the water quality of the installation environment of the pile foundation 3, generally seawater, so that a water curtain can be formed around the whole pile foundation for sound attenuation, and by installing symmetrical grid plates 30, 4 groups are arranged around the bag body 14, so that the bag body 14 can be ensured to be aligned with the sealing block 20 in the process from hollow to expansion under the condition that the weight of the whole device is reduced to the maximum extent, and in consideration of the purpose of omnibearing and multi-level sound attenuation, the grid plates 30 in the embodiment are made of sound attenuation cotton, and are grid plates made of sound attenuation cotton.

Specifically, the exhaust part 16 includes an outer cover 17 disposed in the bag body 14, a side opening 19 and an air outlet 29 communicated with the cavity 18 are respectively disposed on a side surface and a bottom of the outer cover 17, a sealing block 20 for blocking the air outlet 29 is disposed in the cavity 18 of the outer cover 17, and the position of the air outlet 29 is opposite to the position of the push rod 15. The top in the cavity 18 is provided with a sliding groove 23, the sealing block 20 slides with the sliding groove 23 through a support rod 22, and two sides above the air outlet 29 are provided with sealing block seats 21. A valve structure 25 similar to a human body venous valve is arranged in the side opening 19, and a communication channel 24 is arranged on the sealing block 20.

According to the invention, as shown in fig. 5 and 6, when the bag body 14 is not inflated, the bag body 14 is small in volume and does not contact with the top of the ejector rod 15, the bag body 14 is inflated with air through positive pressure of the air inlet pipe 31, the bag body 14 is gradually inflated in volume to expand and enlarge, the exhaust part 16 is driven to move towards the ejector rod 15, when the bag body moves to the ejector rod 15 to jack the sealing block 20, the valve structure 25 of the human body vein valve in the side opening 19 is opened due to pressure difference, so that the gas in the bag body 14 is ejected out from the side opening 19 and the air outlet 29 in sequence, and the gas impacts water bodies around the replacing pile 1, the pile cap 2 and the pile foundation 3 to generate a dark flow with bubbles 32. These bubbles 32 act as the second noise elimination barrier, and because the pressure in the bag body 14 is larger, the discharged gas is ejected, on one hand, more bubbles can be generated, on the other hand, a dark current in the direction of a in fig. 3 can be formed, so as to achieve the purpose of changing the water flow, so that the water curtain in the area can consume more sound wave energy, the purpose of enhancing the sound wave absorption is achieved, and the effect of reducing the noise is achieved, and also, the bag body 14 can have the sequential and cyclic alternation of expansion and contraction, and the change of the bag body 14 and the cavity volume thereof can be used as the third noise elimination.

In this embodiment, as the gas in the capsule 14 is discharged, the volume of the capsule 14 is reduced, and in consideration of the exhaust process, the communicating channel 24 is arranged to ensure that the sealing block 20 slowly descends as far as possible until the pressure of the capsule 14 is lower than the external pressure, and the valve structure 25 of the "human body vein valve" is closed, so that the sealing block 20 can be closed to close the gas outlet 29 under the action of the external pressure, and the inflation and the expansion of the capsule 14 can be realized again. As shown in fig. 7, in order to facilitate the ejector 15 to eject the sealing block 20 and trigger the air outlet 29 to be opened, in this embodiment, the space between the top of the supporting rod 22 and the top of the sliding slot 23 is not closed, so that the supporting rod 22 can slide in the sliding slot 23. Considering that the closer the bladder 14 is to the bottom of the pile 3, the higher the pressure, the slower the inflation, so the air inlet pipe 31 may be of a separate pipe diameter, or the upper bladder 14 has a larger volume, and the lower bladder has a smaller volume, or the upper, middle and lower bladders 14 have different inflation pressures, so as to facilitate the inflation and deflation of the bladders 14 at different positions.

Specifically, the inner side wall of the cofferdam 4 is provided with a vacuum cavity 5, and the vacuum cavity 5 is filled with silencing cotton 6. Referring to fig. 2 or fig. 3, in the invention, the vacuum cavity 5 is arranged on the inner side wall of the cofferdam 4, and the vacuum cavity 5 and the silencing cotton 6 filled in the vacuum cavity 5 can isolate the noise generated by the vibration of the pile driver 1, the pile cap 2 and the pile foundation 3 from radiating outside the cofferdam 4, thereby further ensuring the noise reduction effect of the silencing device. By means of the alternative expansion and contraction of the capsule body 14, the noise reduction of the bubbles 32, the noise reduction of the water curtain and the vacuum noise reduction, the noise generated by the piling operation can hardly be transmitted outwards, so that harm to workers and adverse influence on marine organisms caused by the noise are avoided, and noise pollution is also avoided.

The invention, the remaining parts not described, are the same as, or known or realizable by the prior art and will not be described in detail here.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.