CN109914409A - A kind of hydraulic impact hammer - Google Patents
A kind of hydraulic impact hammer Download PDFInfo
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- CN109914409A CN109914409A CN201910242755.5A CN201910242755A CN109914409A CN 109914409 A CN109914409 A CN 109914409A CN 201910242755 A CN201910242755 A CN 201910242755A CN 109914409 A CN109914409 A CN 109914409A
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- 238000010276 construction Methods 0.000 claims description 12
- 238000005242 forging Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910001149 41xx steel Inorganic materials 0.000 claims description 3
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
A kind of hydraulic impact hammer, including jump bit core, outer housing, pile cover group, lift cylinder, wear-resistant liner and hydraulic system, two leading trucks of outer housing are symmetrical arranged along the vertical direction of framework respectively；Two guide grooves of jump bit core are symmetrical arranged along the vertical direction of upper hammer core；The piston rod of lift cylinder is hingedly installed on the upper surface of hammer core, and cylinder barrel is hingedly installed on the lower end surface of outer housing upper cover plate；Wear-resistant liner is arranged on each outer surface of two leading trucks；Pile cover group is installed on the framework flange of outer housing by the upper cap flange of upper pile cover, and lower pile cover is set in pile cover；Chopping block is placed in one in heart counterbore in a manner of being higher by lower cap inner ring end face；Bumper ring is installed in a manner of being higher by raised head face, and plane is close to the lower end surface of upper pile cover thereon；The present invention has the characteristics that integral rigidity is good, the hammer core resistance of motion is small, chopping block impact resistance, operating efficiency is high, manufacturing cost is low low with use cost.
Description
Technical field
The present invention relates to a kind of engineering machinery, in particular to a kind of hydraulic impact hammer.
Background technique
As industry and civil buildings, road and bridge, intercity high-speed rail and Urbanization Construction scale constantly expand, to pile foundation
It is required that also higher and higher, it is desirable that pile driving equipment has preferable technical performance and working efficiency.And conventional diesel pile hammer is by oil
Cigarette discharge, high noise, vibration is big and the factors such as operating efficiency is low influence, and is unable to satisfy the low-carbon section that modern foundation construction is advocated
Energy, environment protection requirement, use scope and region are very limited, and domestic and international inner city has been forbidden to use diesel oil and has beaten
Pile monkey construction.High-precision, high efficiency and the high pile foundation construction equipment responded are competitively being developed in domestic and international pile foundation manufactory commercial city,
Hydraulic impact hammer is due to meeting low-carbon, section with operating efficiency is high, noise is low, with small vibration and without technical characterstics such as fume pollutions
The environment protection requirement of energy gradually substitutes traditional diesel pile hammer, and product specification series is constantly expanded, and properties of product are not yet
It is disconnected to improve and improve.
Hydraulic impact hammer belongs to impact type pile hammer, after hammer core promotes desired height quick release by hydraulic system,
By be greater than or close to freely falling body in a manner of directly act on hydraulic hammer anvil block or pile cover on, by anvil block and pile cover to stake
Pile body is beaten into stratum after body acting.Since hydraulic hammer hammer core is very big to the active force of anvil block, passing time is stopped only
0.1~0.15 second or so, great impact force will be generated to hammer body and pile cover if bigger if causing vibration after hitting anvil block,
Hydraulic hammer ontology is caused greatly to damage, the performance of its working performance is influenced, reduces the service life of hydraulic hammer；Biggish impact force
It is very big to the pile crown damage of prestressed pile or tubular pole, it is damaged to cause pile crown, and make troubles to pile body adjunction, influences pile foundation construction
Quality.
Existing hydraulic hammer includes impact hammer and is set to the intracorporal hammer core of hammer, is connected at the top of hammer body with hydraulic power system
It connects, the other end is the working end for implementing strike to pile body.Hammer core and hammer body are all made of using rectangular cross section, hammer into shape the heart by its four
A corner guide groove is oriented on the interior angle gib block of hammer body inner cavity four, guarantee hammer the heart hammer body inner cavity promoted and fall stablize,
Reliably, this frame mode keeps hammer body and hammer heart processing complicated, increases hydraulic hammer complete machine manufacturing cost.In hydraulic pile hammer pile sinking
When construction operation, although the wearing plate of gib block outer surface length direction setting, since the hammer heart is frequently past in hammer body inner cavity
Multiple movement causes wearing plate abrasion very fast, and user needs to check its degree of wear, just needs to dismantle when being more than the limit of wear
With replacement wearing plate, pile foundation construction efficiency is influenced, increases construction operation expense.Hydraulic hammer anvil block uses pure iron plate or iron at present
Plate pads wirerope form, easily deforms in the case where hammer core frequently hammers, surface temperature reaches 200oC or more, causes anvil block, pile cover
And hydraulic hammer body distortion and damage, need to be replaced frequently anvil block, reduce capacity utilization, increase pile foundation engineering cost.Technology
Personnel need to solve and the technical issues of capturing to be how to reduce running resistance during hydraulic hammer piling, how to improve anvil block
Material Strength, rigidity and impact resistance, to further extend the service life of hydraulic hammer and improve construction efficiency.
Summary of the invention
It is a primary object of the present invention to overcome disadvantage of the existing technology, provide a kind of integral rigidity it is good, reduce hammer
The good hydraulic impact hammer of the heart resistance of motion, chopping block impact resistance effectively improves operating efficiency and reduces manufacturing cost, meets low-carbon
Discharge, the environmental requirement of green energy conservation.
To achieve the above objectives, solution of the present invention is:
A kind of hydraulic impact hammer, including jump bit core, outer housing, pile cover group, lift cylinder, wear-resistant liner and hydraulic system,
In:
Jump bit core includes lower part hammering head, the upper hammer core containing guide groove；
Outer housing includes framework, upper cover plate and lower flange containing leading truck；
Pile cover group includes upper pile cover, lower pile cover containing upper cap flange, wherein lower pile cover includes the lower cap containing lower cap inner ring and boss
Cover board, chopping block and bumper ring；
It is characterized by:
The framework of the outer housing is the welding structure body of cuboid；Two leading trucks are symmetrically set along the vertical direction of framework
It sets on the medial surface of two side of its left and right；The upper cover plate is installed in the upper end of framework by fastener；The lower flange is solid
Lower end loaded on framework；
The upper hammer core of the jump bit core is cuboid, and two guide grooves are symmetricly set on it along the vertical direction of upper hammer core
On two sides in left and right；The lower part hammering head is the cylindrical body below upper hammer core；
The inner cavity of framework of the jump bit core retainer plate loaded on outer housing, and described in two symmetrical guide groove insertions by its side
On the symmetrical leading truck of two of the framework of outer housing；
The piston rod of the lift cylinder is hingedly installed on the upper surface of the upper hammer core of jump bit core, and cylinder barrel is hingedly installed on outer
The lower end surface of the upper cover plate of shell；
The wear-resistant liner is separately positioned on their each outer surface along the vertical direction of two leading trucks of framework；
The pile cover group is installed in the lower flange of outer housing by the upper cap flange of upper pile cover；Lower pile cap passes through under it
Cap sleeve-board is loaded in the hole of upper pile cover；The lower cap inner ring is set to the geometric center of the upper surface of lower cap plate；The anvil
Plate is plate-like cylinder, is placed in one in heart counterbore in a manner of being higher by lower cap inner ring end face, thereon under end face and the jump bit heart
Portion hammers the contact of head baseplane；The bumper ring is installed in the boss annular groove of its end face in a manner of being higher by raised head face,
Upper plane is close to the lower end surface of the upper cap flange of upper pile cover；The lower end counterbore of lower pile cap is set in from the prefabricated pre- of outside
On the pile crown of stress stake or tubular pole；
The hydraulic system drives lift cylinder, and the piston rod of the lift cylinder drives jump bit core in the framework inner cavity of outer housing
It moves upwards, switches hydraulic circuit after jump bit core reaches design runlength, which moves downward immediately and its underpart
The chopping block in the center counterbore of the lower cap plate of lower pile cover is hit in hammering butt, and the impact force transmitting of hydraulic impact hammer is come from
Piling construction is carried out after external prefabricated pile.
The present invention can be, the jump bit core use the trade mark it is forged for the steel alloy of 35CrMo or 42 CrMo,
Make normalized treatment after forging and machining is made, Brinell hardness is HB160~190 after normalized treatment after forging.
Two guide grooves and lower part that the present invention is also possible that on the upper hammer core of the jump bit core hammer hanging down for end surface
Straight degree tolerance is 0.9~0.11mm；Intracorporal two leading trucks of the frame of the outer housing and the squareness tolerance of framework end face are
0.95~0.105mm.
The present invention be also possible that the wear-resistant liner on each outer surface of two leading trucks of framework be arranged when with
It is arranged every a distance mode.
The present invention is also possible that the wear-resistant liner uses the trade mark to be made of the spheroidal graphite cast-iron of QT500-7 or QT600-3,
They are fixed by screws on each outer surface of two leading trucks of framework inner cavity.
Fit clearance between the upper cap stepped hole of upper pile cap and the lower cap plate of lower pile cover is 2.00~3.00mm.
The present invention is also possible that the chopping block is made of macromolecule material, and main performance index is as follows: density=1.10
~1.2g/cm3, tensile strength >=60MPa, elongation at break >=160%, stretch modulus >=1600MPa, Rockwell hardness >=R116,
Pendulum notch impact strength >=6kJ/m.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hydraulic impact hammer of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is sectional view along A-A in Fig. 1；
The pile cover group structure chart of Fig. 5 hydraulic impact hammer of the present invention；
Fig. 6 is B-B direction cross-sectional view in figure.
Specific embodiment
Hydraulic impact hammer of the present invention is further described below in conjunction with embodiment described in attached drawing.
A kind of hydraulic impact hammer, including jump bit core 1, outer housing 2, pile cover group 3, lift cylinder 4, wear-resistant liner 6 and liquid
Pressure system；Jump bit core 1 includes lower part hammering head 11, the upper hammer core 12 for containing guide groove 122,122 '；Outer housing 2 includes containing guiding
Framework 20, upper cover plate 21 and the lower flange 22 of frame 201,201 '；Pile cover group 3 includes upper pile cover 31 containing upper cap flange 311, contains
The lower pile cover 32 of the lower cap plate 320 of lower cap inner ring 321 and boss 325, chopping block 322 and bumper ring 323；Wherein:
The framework 20 of the outer housing 2 is the welding structure body of cuboid；Two leading trucks 201,201 ' are along framework 20
Vertical direction is symmetricly set on the medial surface of its two side of left and right；The upper cover plate 21 is installed in the upper of framework 20 by fastener
End；The lower flange 22 is installed in the lower end of framework 20；
The upper hammer core 12 of the jump bit core 1 is cuboid, Vertical Square of two guide grooves 122,122 ' along upper hammer core 12
To being symmetricly set on the side of its left and right two；The lower part hammering head 11 is the cylindrical body positioned at upper 12 lower section of hammer core.The punching
Hammer core 1 uses that the trade mark is forged by the steel alloy of 35CrMo or 42 CrMo, normalized treatment and machining are made after forging,
Brinell hardness is HB160~190 after making normalized treatment after forging.The material has very high static strength, impact flexibility and higher
Fatigue limit, and harden ability is good, and no overheat tendency, quenching distortion is small, and impact resistance is effectively ensured, and prolongs the service life.
The jump bit core 1 is set in the inner cavity of the framework 20 of outer housing 2, and passes through two symmetrical guide grooves of its side
On two symmetrical leading trucks 202,202 ' of the framework 20 of 122,122 ' the insertion outer housings 2.The upper hammer of the jump bit core 1
The squareness tolerance of two guide grooves 122,122 ' and lower part hammering 11 end face of head on core 12 is 0.9~0.11mm；It is described outer
The squareness tolerance of two leading trucks 201,201 ' and 20 end face of framework in the framework 20 of shell 2 is 0.95~0.105mm.It protects
It demonstrate,proves jump bit core to move up and down freely in the frame inner cavity of outer housing, effectively plays the blow efficiency of hydraulic impact hammer.
The piston rod 41 of the lift cylinder 4 is hingedly installed on the upper surface of the upper hammer core 12 of jump bit core 1, cylinder barrel 42
Hingedly it is installed on the lower end surface of the upper cover plate 21 of outer housing 2；
The wear-resistant liner 6 is separately positioned on each outer of them along the vertical direction of two leading trucks 201,201 ' of framework 20
On surface.The wear-resistant liner 6 on each outer surface of two leading trucks 201,201 ' of framework 20 when being arranged with interval one
Section range range mode arrangement.It in hydraulic impact hammer maintenance, can be replaced according to its abrasion condition, effectively control wearing plate
Maintenance cost.The wear-resistant liner 6 uses the trade mark to be made of the spheroidal graphite cast-iron of QT500-7 or QT600-3, high with intensity,
The features such as being plastically deformed small, heat-resisting, wear-resistant, corrosion-resistant and good stability of the dimension, they are fixed by screws in framework 20
On each outer surface of two leading trucks 201,201 ' of inner cavity.Facilitate the dismounting and change of user's wearing plate.
The pile cover group 3 is installed in the lower flange 22 of outer housing 2 by the upper cap flange 311 of upper pile cover 31；It is described
Lower pile cover 32 is set in the hole of pile cover 31 by cap plate 320 under it；The upper cap stepped hole 312 of upper pile cap 31 is under
Fit clearance between the lower cap plate 320 of pile cover 32 is 2.00~3.00mm；When hydraulic hammering blow carries out piling work, protect
It demonstrate,proves on the chopping block 322 in the active force useful effect to lower pile cover 32 of jump bit core 1, avoids being transferred to hydraulic punch because of impact vibration
On the outer housing 2 of hammer, the damage of hydraulic impact hammer ontology is caused.The lower cap inner ring 321 is set to the upper of lower cap plate 320
The geometric center of end face；The chopping block 322 is plate-like cylinder, and the heart that is placed in one in a manner of being higher by lower 321 end face of cap inner ring is heavy
In hole 3210, end face is contacted with the lower part of the jump bit heart 1 hammering 11 baseplane of head thereon；It is according to claim 1 hydraulic
Hammer pile cover into shape, it is characterised in that the chopping block 322 is made of macromolecule material, and main performance index is as follows: density=1.10~
1.2g/cm3, tensile strength >=60MPa, elongation at break >=160%, stretch modulus >=1600MPa, Rockwell hardness >=R116, pendulum
Hammer notch impact strength >=6kJ/m into shape.Therefore rigidity, suitable elasticity, impact resistance and resistance to 200~250oC with higher with
The features such as upper high temperature, it is ensured that jump bit heart blow energy effectively transmits, and adapts to jump bit core and frequently hammers, improves and use irony
Chopping block, which is easily crashed to pieces, breaks situation, effectively avoids bounce to the impact injury of hydraulic hammer hammer body, improves hydraulic impact hammer operation
Efficiency.In the boss annular groove 3250 that the bumper ring 323 is installed on its end face in a manner of being higher by 325 end face of boss, put down thereon
It is close to the lower end surface of the upper cap flange 311 of upper pile cover 31 in face；The lower end counterbore 324 of lower pile cap 32 is set in the prefabricated of lower part
On the pile crown of prestressed pile or tubular pole.When hydraulic impact hammer hammers operation, bumper ring 323 is effectively isolated pile cover rebound to hydraulic
It hammers the impact of outer housing into shape, improves the Vibration Condition in hydraulic impact hammer work progress, be conducive to extend service life of equipment.
The hydraulic system drives lift cylinder 4, and the piston rod 41 of the lift cylinder drives jump bit core 1 in outer housing 2
20 inner cavity of framework move upwards, switch hydraulic circuit after jump bit core 1 reaches design runlength, the jump bit core 1 immediately to
Chopping block in the center counterbore 3210 for the lower cap plate 320 that lower movement and its underpart hammering shock of head 11 are located at lower pile cover 32
322, piling construction is carried out after the impact force of hydraulic impact hammer is passed to precast prestressed stake or tubular pole positioned at pile cover lower part.
Claims (7)
1. a kind of hydraulic impact hammer, including jump bit core (1), outer housing (2), pile cover group (3), lift cylinder (4), wear-resistant liner
(6) and hydraulic system, in which:
Jump bit core (1) includes lower part hammering head (11), the upper hammer core (12) for containing guide groove (122,122 ')；
Outer housing (2) includes framework (20), upper cover plate (21) and lower flange (22) containing leading truck (201,201 ')；
Pile cover group (3) includes containing upper cap flange (311)) and upper cap stepped hole (312) upper pile cover (31), lower pile cover (32),
In, lower pile cover (32) includes lower cap plate (320), chopping block (322) and bumper ring containing lower cap inner ring (321) and boss (325)
(323)；
It is characterized by:
The framework (20) of the outer housing (2) is the welding structure body of cuboid；Two leading trucks (201,201 ') are along frame
The vertical direction of body (20) is symmetricly set on the medial surface of its two side of left and right；The upper cover plate (21) is installed in by fastener
The upper end of framework (20)；The lower flange (22) is installed in the lower end of framework (20)；
The upper hammer core (12) of the jump bit core (1) is cuboid, and two guide grooves (122,122 ') are along upper hammer core (12)
Vertical direction be symmetricly set on the side of its left and right two；Lower part hammering head (11) is the circle below upper hammer core (12)
Cylinder；
The jump bit core (1) is set in the inner cavity of the framework (20) of outer housing (2), and two by its side are symmetrically oriented to
Slot (122,122 ') is embedded on two symmetrical leading trucks (202,202 ') of the framework (20) of the outer housing (2)；
The piston rod (41) of the lift cylinder (4) is hingedly installed on the upper surface of the upper hammer core (12) of jump bit core (1), cylinder
Cylinder (42) is hingedly installed on the lower end surface of the upper cover plate (21) of outer housing (2)；
The wear-resistant liner (6) is separately positioned on theirs along the vertical direction of two leading trucks (201,201 ') of framework (20)
On each outer surface；
The pile cover group (3) is installed in the lower flange (22) of outer housing (2) by the upper cap flange (311) of upper pile cover (31)
On；Lower pile cap (32) is set in the hole of pile cover (31) by cap plate (320) under it；The lower cap inner ring (321)
It is set to the geometric center of the upper surface of lower cap plate (320)；The chopping block (322) is plate-like cylinder, to be higher by lower cap inner ring
(321) mode of end face is placed in one in heart counterbore (3210), and the lower part of end face and the jump bit heart (1) hammers head (11) bottom thereon
Plane contact；The bumper ring (323) is installed on the boss annular groove (3250) of its end face in a manner of being higher by boss (325) end face
Interior, plane is close to the lower end surface of the upper cap flange (311) of upper pile cover (31) thereon；The lower end counterbore of lower pile cap (32)
(324) it is set on the pile crown from external prestressed pile or tubular pole；
The hydraulic system drives lift cylinder (4), and the piston rod (41) of the lift cylinder drives jump bit core (1) in outer housing
(2) framework (20) inner cavity moves upwards, and switches hydraulic circuit after jump bit core (1) reaches design runlength, the jump bit core
(1) it moves downward immediately and the center counterbore for being located at the lower cap plate (320) of lower pile cover (32) is hit in its underpart hammering head (11)
(3210) the impact force transmitting of hydraulic impact hammer is carried out piling construction after external prefabricated pile by the chopping block (322) in.
2. hydraulic impact hammer according to claim 1, it is characterised in that the jump bit core (1) use the trade mark for
The steel alloy of 35CrMo or 42 CrMo is forged, normalized treatment and machining are made after forging, after making normalized treatment after forging
Brinell hardness is HB160~190.
3. hydraulic impact hammer according to claim 1, it is characterised in that on the upper hammer core (12) of the jump bit core (1)
The squareness tolerance of two guide grooves (122,122 ') and lower part hammering head (11) end face is 0.9~0.11mm；The outer housing
(2) squareness tolerance of two leading trucks (201,201 ') in framework (20) and framework (20) end face is 0.95~
0.105mm。
4. hydraulic impact hammer according to claim 1, it is characterised in that two in framework (20) of the wear-resistant liner (6)
It is arranged in a manner of being spaced a distance when being arranged on each outer surface of leading truck (201,201 ').
5. hydraulic impact hammer according to claim 1 or 4, it is characterised in that the wear-resistant liner (6) use the trade mark for
The spheroidal graphite cast-iron of QT500-7 or QT600-3 is made, they are fixed by screws in two leading trucks of framework (20) inner cavity
On each outer surface of (201,201 ').
6. hydraulic impact hammer according to claim 1, it is characterised in that the upper cap stepped hole (312) of upper pile cap (31)
Fit clearance between the lower cap plate (320) of lower pile cover (32) is 2.00~3.00mm.
7. hydraulic impact hammer according to claim 1, it is characterised in that hydraulic hammer pile cover according to claim 1,
It is characterized in that the chopping block (322) is made of macromolecule material, main performance index is as follows: density=1.10~1.2g/
cm3, tensile strength >=60MPa, elongation at break >=160%, stretch modulus >=1600MPa, Rockwell hardness >=R116, pendulum lack
Mouth impact strength >=6kJ/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242755.5A CN109914409B (en) | 2019-03-28 | 2019-03-28 | Hydraulic impact hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242755.5A CN109914409B (en) | 2019-03-28 | 2019-03-28 | Hydraulic impact hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109914409A true CN109914409A (en) | 2019-06-21 |
| CN109914409B CN109914409B (en) | 2024-04-26 |
Family
ID=66967359
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910242755.5A Active CN109914409B (en) | 2019-03-28 | 2019-03-28 | Hydraulic impact hammer |
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| Country | Link |
|---|---|
| CN (1) | CN109914409B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485419A (en) * | 2019-08-30 | 2019-11-22 | 上海工程机械厂有限公司 | A kind of hydraulic pile hammer |
| CN110565638A (en) * | 2019-08-30 | 2019-12-13 | 上海工程机械厂有限公司 | hammer core of hydraulic pile hammer and lifting mechanism thereof |
| CN114753363A (en) * | 2022-04-19 | 2022-07-15 | 浙江永安工程机械有限公司 | Circular shock-absorbing impact hammer with lubricating structure |
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| GB0914049D0 (en) * | 2009-08-12 | 2009-09-16 | Spriggs David F | Improved cooling of hydraulic piling hammers |
| CN101748730A (en) * | 2009-12-15 | 2010-06-23 | 高天宝 | Multi-function closed cylinder type hydraulic piling hammer |
| CN107724390A (en) * | 2017-11-15 | 2018-02-23 | 浙江永安工程机械有限公司 | Hydraulic pile hammer |
| CN210104739U (en) * | 2019-03-28 | 2020-02-21 | 上海工程机械厂有限公司 | Hydraulic impact hammer |
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2019
- 2019-03-28 CN CN201910242755.5A patent/CN109914409B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2687177Y (en) * | 2003-09-27 | 2005-03-23 | 佛山市顺德区力源液压机械有限公司 | Hydraulic piling hammer with improved structure |
| GB0914049D0 (en) * | 2009-08-12 | 2009-09-16 | Spriggs David F | Improved cooling of hydraulic piling hammers |
| CN101748730A (en) * | 2009-12-15 | 2010-06-23 | 高天宝 | Multi-function closed cylinder type hydraulic piling hammer |
| CN107724390A (en) * | 2017-11-15 | 2018-02-23 | 浙江永安工程机械有限公司 | Hydraulic pile hammer |
| CN210104739U (en) * | 2019-03-28 | 2020-02-21 | 上海工程机械厂有限公司 | Hydraulic impact hammer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485419A (en) * | 2019-08-30 | 2019-11-22 | 上海工程机械厂有限公司 | A kind of hydraulic pile hammer |
| CN110565638A (en) * | 2019-08-30 | 2019-12-13 | 上海工程机械厂有限公司 | hammer core of hydraulic pile hammer and lifting mechanism thereof |
| CN114753363A (en) * | 2022-04-19 | 2022-07-15 | 浙江永安工程机械有限公司 | Circular shock-absorbing impact hammer with lubricating structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109914409B (en) | 2024-04-26 |
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