CN210216416U - Noise-control hydraulic pile hammer - Google Patents
Noise-control hydraulic pile hammer Download PDFInfo
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- CN210216416U CN210216416U CN201920789863.XU CN201920789863U CN210216416U CN 210216416 U CN210216416 U CN 210216416U CN 201920789863 U CN201920789863 U CN 201920789863U CN 210216416 U CN210216416 U CN 210216416U
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Abstract
The utility model discloses a noise control hydraulic pile hammer, which comprises a hammer core, a guide cylinder and a hydraulic cylinder, wherein the hammer core is movably arranged in the guide cylinder, the extending end of a piston rod of the hydraulic cylinder is connected with the hammer core, an outer cylinder shell is sleeved outside the guide cylinder, an adjacent sound absorption layer and a buffer cavity are arranged between the guide cylinder and the outer cylinder shell, a sound absorption pipe is embedded in the sound absorption layer, and one end of the sound absorption pipe is communicated with the buffer cavity; the guide cylinder is also provided with a through-flow hole which also leads to the flow slowing cavity. The guide cylinder is provided with an inner cylinder through hole, and the pipe wall of the sound absorption pipe is provided with a pipe wall through hole. A replacing block is movably arranged in the guide cylinder below the hammer core, a replacing beating sound absorption layer is arranged between the guide cylinder corresponding to the replacing beating block and the outer cylinder shell, and a replacing beating position through hole is arranged on the guide cylinder corresponding to the replacing beating sound absorption layer. The noise-control hydraulic pile hammer can effectively control the hitting noise of the pile hammer and is beneficial to realizing the construction operation with large energy and low noise.
Description
Technical Field
The utility model relates to a piling machinery for building engineering foundation construction especially relates to an impact pile hammer of health pneumatic cylinder, specifically the utility model relates to a hydraulic pressure pile hammer including noise reduction structure of making an uproar falls in amortization.
Background
The hammering type pile driver is the most common piling machinery and has the characteristics of large impact energy, high piling efficiency and convenient construction, so that the hammering type pile driver can only be used for operation in pile sinking construction of large foundation piles.
The hammering type pile driver mainly comprises a diesel pile driving hammer and a hydraulic pile driving hammer. The diesel pile hammer is one of important piling machines, and the diesel pile hammer mainly has a guide rod type diesel pile hammer and a cylinder type diesel pile hammer in structural forms, wherein combustion diesel is used as an energy source, so that the guide rod type diesel pile hammer and the cylinder type diesel pile hammer can not only generate violent explosion shock waves to cause violent striking noise, but also generate a large amount of fuel chemical energy which is not converted into useful striking kinetic energy but also converted into heat energy during working, the effective energy conversion rate is low, the combustion deterioration is easily caused, the fuel combustion is incomplete, the exhaust smoke intensity is high, rolling black smoke can be emitted, and a large amount of harmful smoke and soot particles are generated; therefore, noise and oil smoke pollution are the problems which cannot be solved by the diesel hammer, and the mass of the impact hammer core of the diesel hammer which is the largest theoretically can only reach 15 tons due to the limitation of heat capacity and efficiency of the diesel hammer, so that the construction requirement of a large precast pile cannot be met.
The hydraulic pile hammer mainly has a single-acting type and a double-acting type according to the structure and the working principle. The hydraulic pile hammer has the characteristics of high pile driving efficiency and no oil smoke pollution, and can realize high-energy and high-frequency pile driving construction operation; with the development of large-scale construction engineering, the hydraulic pile hammer becomes a preferred device for large-scale foundation pile construction more and more with the advantage of large striking energy; the hydraulic pile hammer overcomes the resistance of the soil layer to the foundation pile by means of the impact energy of the hammer core to make the pile sink to a preset depth or reach the bearing layer. Therefore, although the hydraulic pile hammer avoids the oil smoke air pollution problem of the diesel pile hammer, the influence of huge impact noise on the surrounding environment still exists, and the larger the striking energy of the hydraulic pile hammer is, the larger the generated construction noise becomes. Under the condition that the requirements of construction environment are increasingly strict, the advantages of the hydraulic pile hammer are seriously exerted and the construction range is seriously expanded; the construction noise of the hydraulic pile hammer has become a technical problem to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect that prior art exists, the utility model aims to solve the technical problem that a hydraulic pile hammer of making an uproar is made in order to effectively restrain and control the accuse of pile hammer striking noise is provided.
In order to solve the technical problem, the utility model discloses a noise control hydraulic pile hammer, including hammer core, guide cylinder and pneumatic cylinder, the hammer core activity sets up in the guide cylinder, and the piston rod of pneumatic cylinder stretches out the end and is connected with the hammer core, the outside cover of guide cylinder has outer shell, is provided with adjacent sound absorbing layer and slow flow chamber between guide cylinder and outer shell, has buried the sound absorbing pipe in the sound absorbing layer, and the one end of sound absorbing pipe leads to the slow flow chamber; the guide cylinder is also provided with a through-flow hole which also leads to the flow slowing cavity.
In the structure, the slow flow cavity is arranged between the guide cylinder and the outer cylinder shell and is communicated with the through hole arranged on the guide cylinder; the flow slowing cavity effectively reduces and smoothes the flow velocity of the impact airflow and reduces air disturbance noise caused by air vortex, impact and pressure mutation; more importantly, impact noise generated by falling and striking of the hammer core enters the slow flow cavity through the through hole, so that sudden expansion or sudden contraction of impact airflow is formed, the section of sound wave on the expanded and contracted gas flow channel is suddenly changed, so that sudden change of acoustic impedance in the flow channel is caused, the propagation direction of the sound wave is changed, reflection and interference occur in the slow flow cavity, and the noise elimination of medium and low frequency noise is realized. And because the sound absorbing layer is arranged between the guide cylinder and the outer cylinder shell, the sound absorbing pipe communicated with the slow flow cavity, the annular airflow channel between the hammer core and the inner wall of the guide cylinder and the sound absorbing pipe airflow channel communicated with the slow flow cavity are embedded in the sound absorbing layer, and the cylinder wall and the pipe wall facing the flow channels are communicated with the sound absorbing layer through the perforations on the wall, so that a resistive silencer is formed, sound energy is converted into heat energy through the friction, viscosity and damping action in the pores of the porous sound absorbing material to be dissipated, and the sound wave passing through the silencer is weakened. Therefore the utility model discloses a noise cancelling structure has constituted the combined type muffler that resistance muffler and hindering nature muffler combined together, has the sound insulation, the sound absorption, the combined effect of noise elimination, and not only the noise cancelling effect is stable, can adapt to the broadband amortization of the hammering system that different stake types and different specification pile hammer constitute moreover, has guaranteed that hydraulic pile hammer is to upsizing, low noise direction development for hydraulic pile hammer's advantage and range of application obtain full play, have rational in infrastructure firmly, long service life's advantage.
The utility model discloses a preferred embodiment, be provided with the inner tube on the guide cylinder and perforate be equipped with the pipe wall perforation on the pipe wall of sound-absorbing pipe. The inner cylinder through hole on the guide cylinder, the pipe wall through hole on the sound absorption pipe and the sound absorption layer material form a resistive silencer with good silencing effect.
The utility model discloses a further implementation mode, the fenestrate aperture of inner tube is 5 mm-10 mm, and the perforation rate of the last perforation section of guide cylinder is 20% -30%; the hole diameter of the upper pipe wall perforation of the sound absorption pipe is 3 mm-8 mm, and the perforation rate of the sound absorption pipe is 15% -30%.
The utility model discloses a preferred embodiment hammer core below guide cylinder internalization be provided with instead beat the piece, with should instead beat and be equipped with between corresponding guide cylinder in piece position and the outer shell and take place to beat the sound absorbing layer, instead beat and be equipped with on the guide cylinder that the sound absorbing layer corresponds and take place to beat the position and perforate. The structure eliminates and controls the propagation of hammering noise along the guide cylinder and the gap between the forging blocks.
The utility model discloses a another kind of preferred embodiment, the unhurried current chamber is located the lower extreme of sound absorbing pipe, and unhurried current chamber and through-flow hole all are located the corresponding position of hammer core lower extreme impact surface. The sound absorption layer comprises a sound absorption material layer and glass fiber cloth, the glass fiber cloth is respectively coated on the outer side of the guide cylinder and the sound absorption pipe, and the sound absorption material layer takes glass wool or rock wool as a material. Is favorable for ensuring the silencing effect.
The utility model discloses a preferred embodiment, the guide cylinder is pipe tubular structure, is provided with a plurality of inner tubes on this guide cylinder and perforates, supports between guide cylinder and outer shell and has the barrel gusset. The guide cylinder has better overall strength.
In another preferred embodiment of the present invention, the guiding cylinder comprises a plurality of guiding cylinder plates, and the guiding cylinder plates are fixedly connected with each other through a cylinder rib plate; an inner cylinder pore plate is arranged between the adjacent guide cylinder plates, and an inner cylinder perforation is arranged on the inner cylinder pore plate. Is convenient for manufacturing, processing and assembling.
The utility model discloses a still another preferred embodiment, it has a plurality of sound windows of inhaling to open on the section of thick bamboo wall of guide cylinder, all installs the inner tube orifice plate on each sound window of inhaling, is equipped with the inner tube on the inner tube orifice plate and perforates. The guide cylinder is good in integrity and convenient to assemble the sound absorption layer.
The utility model discloses a further embodiment, the flange on the upper end fixedly connected with barrel of guide cylinder and outer shell, fixed mounting has the pneumatic cylinder bearing plate on the flange on the barrel, and the cylinder body of pneumatic cylinder supports on the pneumatic cylinder bearing plate, the lower extreme of guide cylinder and outer shell is connected with the pile cap through lower flange.
Drawings
The noise-control hydraulic pile hammer of the present invention will be further described with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic cross-sectional view of one embodiment of the noise-controlling hydraulic pile hammer of the present invention;
fig. 2 is a schematic cross-sectional view of another embodiment of the noise-controlling hydraulic pile hammer of the present invention;
FIG. 3 is a cross-sectional block diagram of one embodiment of the guide cylinder of FIG. 1 or FIG. 2;
FIG. 4 is a schematic cross-sectional view of another embodiment of the guide cylinder of FIG. 1 or FIG. 2;
fig. 5 is a schematic cross-sectional view of another embodiment of the guide cylinder of fig. 1 or 2.
In the figure, 1-guide cylinder, 2-outer cylinder shell, 3-slow flow cavity, 4-through hole, 5-inner cylinder perforation, 6-sound absorption tube, 7-sound absorption layer, 8-hammer core, 9-hammer core connector, 10-hydraulic cylinder, 11-hydraulic cylinder supporting plate, 12-integrated valve block, 13-sound absorption tube upper supporting plate, 14-sound absorption tube lower supporting plate, 15-alternate beating limiting ring, 16-alternate beating pad, 17-alternate beating block, 18-pile cap, 19-alternate beating sound absorption layer, 20-alternate beating position perforation, 21-cylinder upper flange, 22-cylinder rib plate, 23-cylinder lower flange, 24-inner cylinder pore plate and 25-guide cylinder plate.
Detailed Description
The first embodiment is as follows:
the noise-control hydraulic pile hammer as shown in fig. 1 comprises a hammer core 8, wherein the hammer core 8 is arranged in a guide cylinder 1 in a vertically reciprocating sliding manner, the hammer core 8 is a striking weight with the weight of several tens of tons, and the guide cylinder 1 is a guide body and a support part, wherein the hammer core 8 slides vertically. The outer cylinder shell 2 is sleeved outside the guide cylinder 1 with a gap, a hydraulic cylinder 10 is supported at the upper ends of the guide cylinder 1 and the outer cylinder shell 2 which are sleeved with each other through a hydraulic cylinder supporting plate 11, the cylinder body of the hydraulic cylinder 10 is installed on the hydraulic cylinder supporting plate 11, the piston rod of the hydraulic cylinder 10 extends into the guide cylinder 1, and the extending lower end of the piston rod of the hydraulic cylinder 2 is connected with the hammer core 8 through a hammer core connector 9. An energy accumulator is arranged on the hydraulic cylinder supporting plate, and an integrated valve block 12 is also arranged at the top of the hydraulic cylinder.
The lower ends of the guide cylinder 1 and the outer cylinder shell 2 which are mutually sleeved are fixedly connected with a pile cap 18, a replacing block 17 is movably arranged in the cylinder body at the lower end of the guide cylinder, and a replacing pad 16 is padded on the replacing block 17. And a secondary hitting limiting ring 15 is fixedly arranged on the inner wall of the cylinder body of the guide cylinder 1 above the secondary hitting block 17 to limit the ascending position of the secondary hitting block. When the hydraulic pile hammer is operated, the hammer core 8 reciprocates up and down along the inner wall of the guide cylinder 1 by the hydraulic cylinder 10 to strike a pile. The pile cap 18 is sleeved at the position of the pile top, and the hammer core 8 which moves in a reciprocating mode transfers the hammering energy of the hammer core 8 to the pile top through the secondary driving cushion 16 and the secondary driving block 17, so that the pile is gradually sunk into the soil.
The gap space between the guide cylinder 1 and the outer cylinder shell 2 which are mutually sleeved is provided with an adjacent sound absorption layer 7 and a slow flow cavity 3. The slow flow cavity 3 is positioned at the lower end of the guide cylinder 1, a through hole 4 is arranged on the cylinder wall at the lower end of the guide cylinder 1, and the through hole 4 is communicated with the slow flow cavity 3. The positions of the slow flow cavity 3 and the through flow hole 4 correspond to the impact positions of the hammer core 8 and the beating blocks and the beating pads on the beating blocks.
The sound absorption layer 7 is positioned above the slow flow cavity 3, the sound absorption layer 7 comprises glass fiber cloth which is respectively coated on the outer cylinder wall of the guide cylinder 1 and the pipe wall of the sound absorption pipe 6, and glass fiber cotton or rock wool is filled between the glass fiber cloth. A sound absorbing pipe 6 is also embedded in the sound absorbing layer 7, and the upper end and the lower end of the sound absorbing pipe 6 are respectively fixed on the guide cylinder 1 and the outer cylinder shell 2 through a sound absorbing pipe upper support plate 13 and a sound absorbing pipe lower support plate 14. The sound absorption layer 7 is positioned in a cylindrical space surrounded by the guide cylinder 1, the outer cylinder shell 2, the sound absorption upper support plate 13 and the sound absorption pipe lower support plate 14. The lower end of the sound absorbing pipe 6 is communicated with the slow flow cavity 3, and the upper end of the sound absorbing pipe 6 is communicated with the upper space of the sound absorbing layer 7 or the upper inner space and the upper outer space of the hammer core 8.
The wall of the guide cylinder 1 corresponding to the sound absorption layer 7 is provided with a plurality of inner cylinder through holes 5, the aperture of each inner cylinder through hole 5 is 6mm, and the perforation rate of the perforated section on the guide cylinder 1 is 25%; the pipe wall of the sound absorption pipe 6 is provided with a plurality of pipe wall perforations, the aperture of each pipe wall perforation is 5mm, and the perforation rate on the sound absorption pipe 6 is 20%.
As shown in fig. 3, the guide cylinder 1 is a cylindrical structure, the cylinder is provided with an inner cylinder through hole 5 and a through hole 4, 16 straight plate-shaped cylinder rib plates 22 are uniformly distributed on the outer cylinder wall of the guide cylinder 1 along the axial direction, and a sound absorbing pipe 6 is arranged between two adjacent cylinder rib plates 22. The sound absorbing pipe 6 is fixedly connected between the guide cylinder and the outer cylinder shell through an upper flange and a lower flange. The outer cylinder shell 2 is sleeved on 16 cylinder body rib plates 22, cylinder body upper flanges 22 positioned at the upper ends of the guide cylinder 1 and the outer cylinder shell 2 are connected with the hydraulic cylinder supporting plate 11, and a cylinder body lower flange 23 at the lower end of the guide cylinder 1 is connected with a pile cap 18. A sound absorbing layer 7 is filled between the guide cylinder 1 and the outer cylinder casing 2.
As shown in fig. 4, which shows another structural formation of the guide cylinder. The guide cylinder 1 comprises a cylindrical cylinder body and a groove-shaped window arranged on the cylinder body, an inner cylinder pore plate 24 is fixedly covered on the groove-shaped window, an inner cylinder through hole 5 is arranged on the inner cylinder pore plate 24, and six annular cylinder body rib plates 22 are uniformly distributed on the outer cylinder wall of the cylinder body along the circumferential direction of the cylinder body. And 14 sound absorption pipes 6 are uniformly arranged on the outer side of the guide cylinder 1, and each sound absorption pipe 6 penetrates through six annular cylinder rib plates 22 and extends from top to bottom along the axial direction. The outer cylinder shell 2 is sleeved on six annular cylinder body rib plates 22. The sound absorption layer 7 is arranged between the guide cylinder 1 and the outer cylinder shell 2.
As shown in fig. 5, which shows another structure form of the guide cylinder, the guide cylinder 1 includes 4 guide cylinder plates 25, and the 4 guide cylinder plates 25 are located on the same cylindrical surface. A short cylindrical inner cylinder pore plate 24 is fixedly arranged between two adjacent guide cylinder plates 25, an inner cylinder perforation 5 is arranged on the inner cylinder pore plate 24, 14 cylinder rib plates 22 which are uniformly distributed along the circumferential direction are connected on the outer walls of the guide cylinder plates 25 and the inner cylinder pore plate 24, and a sound absorption pipe 6 is arranged between two adjacent cylinder rib plates 22.
Example two:
the embodiment is the same as the above embodiment except that the position corresponding to the replacing block is provided with a silencing structure. In the embodiment, a substitute punch hole 20 is arranged on the section of the guide cylinder 1 corresponding to the position of the substitute block 17; the perforation rate of the cylinder section is 25%, the aperture of the substitute beat perforation 20 is 6mm, a substitute beat sound absorption layer 19 is filled between the cylinder section and the outer cylinder shell 2, and the substitute beat sound absorption layer 19 comprises glass fiber cloth coated on the guide cylinder body and glass fiber cotton or rock wool filled outside the glass fiber cloth.
The foregoing is directed to preferred embodiments of the present invention, which are not limited to the above-described embodiments, and many modifications and variations may be made without departing from the basic principles of the invention. Such as: the filling material of the sound absorption layer in the utility model can be glass fiber cloth, glass fiber cotton, rock wool and the like, and can also be other common sound absorption and sound attenuation materials; the guide cylinder and the outer cylinder shell can be round cylinders, rectangular cylinders or cylinders with other geometrical cross sections, and the perforation rate of the perforation section of the guide cylinder is not limited to 25 percent and can be preferably 20 to 30 percent; the perforation rate on the sound absorption tube is preferably 15% -30%; the hole diameter of the inner cylinder is preferably 5 mm-10 mm, and the hole diameter of the sound absorption pipe wall is preferably 3 mm-8 mm. The replacing beating block can be padded with a replacing beating pad, and a simple replacing beating block structure can also be adopted; the middle section of the sound absorption pipe can also support a plurality of supporting plates besides the upper flange and the lower flange which are fixed at the two ends of the sound absorption pipe; the cylinder body formed by the guide cylinder and the outer cylinder shell can be also provided with auxiliary structures such as an observation hole or a hammer core scale hole and the like. All such modifications and improvements are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a accuse hydraulic pressure pile hammer of making an uproar, includes hammer core (8), guide cylinder (1) and pneumatic cylinder (10), hammer core (8) activity sets up in guide cylinder (1), and the piston rod of pneumatic cylinder (10) stretches out the end and is connected its characterized in that with hammer core (8): an outer cylinder shell (2) is sleeved outside the guide cylinder (1), an adjacent sound absorption layer (7) and a buffer cavity (3) are arranged between the guide cylinder (1) and the outer cylinder shell (2), a sound absorption pipe (6) is embedded in the sound absorption layer (7), and one end of the sound absorption pipe (6) is communicated with the buffer cavity (3); the guide cylinder (1) is also provided with a through-flow hole (4), and the through-flow hole (4) also leads to the slow flow cavity (3).
2. The noise-controlling hydraulic pile hammer as set forth in claim 1, wherein: the guide cylinder (1) is provided with an inner cylinder through hole (5), and the wall of the sound absorption pipe (6) is provided with a pipe wall through hole.
3. The noise-controlling hydraulic pile hammer as set forth in claim 2, wherein: the aperture of the inner cylinder perforation (5) is 5 mm-10 mm, and the perforation rate of the perforation section on the guide cylinder (1) is 20% -30%; the hole diameter of the pipe wall perforation of the sound absorption pipe (6) is 3 mm-8 mm, and the perforation rate of the sound absorption pipe (6) is 15% -30%.
4. The noise-controlling hydraulic pile hammer as set forth in claim 1, wherein: a replacing beating block (17) is movably arranged in the guide cylinder (1) below the hammer core (8), a replacing beating sound absorbing layer (19) is arranged between the guide cylinder (1) corresponding to the replacing beating block (17) and the outer cylinder shell (2), and a replacing beating perforation (20) is arranged on the guide cylinder (1) corresponding to the replacing beating sound absorbing layer (19).
5. The noise controlling hydraulic pile driving hammer as set forth in claim 1, 2, 3 or 4, wherein: the slow flow cavity (3) is located at the lower end of the sound absorption pipe (6), and the slow flow cavity (3) and the through hole (4) are located at the corresponding positions of the lower end impact surface of the hammer core (8).
6. The noise controlling hydraulic pile driving hammer as set forth in claim 1, 2, 3 or 4, wherein: the sound absorption layer (7) comprises a sound absorption material layer and glass fiber cloth, the glass fiber cloth is respectively coated on the outer side of the guide cylinder (1) and the sound absorption pipe (6), and the sound absorption material layer takes glass wool or rock wool as a material.
7. The noise-controlling hydraulic pile driving hammer as set forth in claim 1, 2 or 3, wherein: the guide cylinder (1) is of a tubular structure, a plurality of inner cylinder through holes (5) are formed in the guide cylinder (1), and a cylinder rib plate (22) is supported between the guide cylinder (1) and the outer cylinder shell (2).
8. The noise-controlling hydraulic pile driving hammer as set forth in claim 1, 2 or 3, wherein: the guide cylinder (1) comprises a plurality of guide cylinder plates (25), and the guide cylinder plates (25) are fixedly connected with each other through a cylinder body rib plate (22); an inner cylinder pore plate (24) is arranged between the adjacent guide cylinder plates (25), and an inner cylinder perforation (5) is arranged on the inner cylinder pore plate (24).
9. The noise-controlling hydraulic pile driving hammer as set forth in claim 1, 2 or 3, wherein: the wall of the guide cylinder (1) is provided with a plurality of sound-absorbing windows, each sound-absorbing window is provided with an inner cylinder pore plate (24), and the inner cylinder pore plates (24) are provided with inner cylinder through holes (5).
10. The noise-controlling hydraulic pile hammer as set forth in claim 1, wherein: the upper ends of the guide cylinder (1) and the outer cylinder shell (2) are fixedly connected with an upper cylinder flange (21), a hydraulic cylinder supporting plate (11) is fixedly mounted on the upper cylinder flange (21), a cylinder body of the hydraulic cylinder (10) is supported on the hydraulic cylinder supporting plate (11), and the lower ends of the guide cylinder (1) and the outer cylinder shell (2) are connected with pile caps (18) through lower flanges (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789863.XU CN210216416U (en) | 2019-05-29 | 2019-05-29 | Noise-control hydraulic pile hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789863.XU CN210216416U (en) | 2019-05-29 | 2019-05-29 | Noise-control hydraulic pile hammer |
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| Publication Number | Publication Date |
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| CN210216416U true CN210216416U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920789863.XU Active CN210216416U (en) | 2019-05-29 | 2019-05-29 | Noise-control hydraulic pile hammer |
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| CN (1) | CN210216416U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158590A (en) * | 2019-05-29 | 2019-08-23 | 江苏巨威机械有限公司 | Control hydraulic pile hammer of making an uproar |
| CN115233670A (en) * | 2021-04-23 | 2022-10-25 | 东台市巨力机械制造有限公司 | Guide rod type diesel big hammer device |
-
2019
- 2019-05-29 CN CN201920789863.XU patent/CN210216416U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158590A (en) * | 2019-05-29 | 2019-08-23 | 江苏巨威机械有限公司 | Control hydraulic pile hammer of making an uproar |
| CN115233670A (en) * | 2021-04-23 | 2022-10-25 | 东台市巨力机械制造有限公司 | Guide rod type diesel big hammer device |
| CN115233670B (en) * | 2021-04-23 | 2023-09-15 | 东台市巨力机械制造有限公司 | Guide rod type diesel oil large hammer device |
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