CN108239979A - The big energy hydraulic pile hammer of high frequency - Google Patents
The big energy hydraulic pile hammer of high frequency Download PDFInfo
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- CN108239979A CN108239979A CN201810291946.6A CN201810291946A CN108239979A CN 108239979 A CN108239979 A CN 108239979A CN 201810291946 A CN201810291946 A CN 201810291946A CN 108239979 A CN108239979 A CN 108239979A
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- 239000012530 fluid Substances 0.000 claims abstract description 41
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 22
- 230000003068 static effect Effects 0.000 claims description 38
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 239000003921 oil Substances 0.000 description 98
- 238000010586 diagram Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
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- 239000010727 cylinder oil Substances 0.000 description 2
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- 239000003517 fume Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000282693 Cercopithecidae Species 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
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- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 239000002360 explosive Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth 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 kind of big energy hydraulic pile hammers of high frequency, and including hydraulic pump and hammer core, hydraulic cylinder includes the inner cylinder liner and outer cylinder sheath of spaced suit, oil inlet passage is formed between inner cylinder liner and outer cylinder sheath；The piston rod being fixedly connected with the piston passes axially through cylinder cap and hydrostatic support set and is supported on hydrostatic support and puts on, cylinder body oil inlet and cylinder body oil return opening are provided on cylinder bottom, cylinder body oil inlet is connected with the oil inlet passage between inner cylinder liner and outer cylinder sheath, the oil inlet passage leads to the rod chamber of hydraulic cylinder further through the fuel feed hole on inner cylinder liner, and cylinder body oil return opening is connected with the rodless cavity of hydraulic cylinder；The oil outlet of hydraulic pump and to the pressure oil port for being connected to cylinder body oil inlet and the second inserted valve, the B hydraulic fluid ports of the first inserted valve are connected to cylinder body oil return opening；Control valve forms direction control circuit as pilot valve and two inserted valves.The hydraulic pile hammer is simple and reasonable, small to surrounding environment influence, the big energy piling of high frequency time can be realized, especially suitable for large-scale foundation pile construction.
Description
Technical field
The present invention relates to a kind of piling machinerys for architectural engineering foundation construction more particularly to one kind to have big flow liquid
Pressure system and the hydraulic pile hammer that can realize hydraulic cylinder differential connection.
Background technology
Pile foundation be it is a kind of be widely used in land and marine architectural engineering base form, especially with China's engineering
That builds is growing with progressive, in recent years China's ocean engineering, Tian Haizao islands, offshore wind farm, large bridge and land high level
Building etc. has been made significant headway, and not only engineering coefficient is very high for these engineerings, but also pile foundation construction difficulty becomes to get over
Come higher, foundation pile length and diameter also becomes increasing, and this requires be used to have the piling machinery on foundation pile injection stratum
There are higher blow energy and higher striking frequency.
Existing piling machinery mainly has oscillatory type, static pressure type and paddle type mill piling machinery.Since static pressure pile-sinking machine needs
Huge ballasting weights, thus static pressure pile-sinking can not be suitable for the piling construction of large-scale foundation pile.Pile vibrosinking has boundary of works area
Extensively, it can be sunk, pile pulling operation, the construction of the various pile types such as pile pile, fully-sleeved filled pile, steel sheet pile, but vibropile can be carried out
Hammer overcomes the ability of pile top end resistance weaker, especially when foundation pile tip size is larger, vibration hammer be difficult to overcome end resistance and
Realize pile sinking；In to major diameter foundation pile construction, vibration hammer is only capable of that first heavy caliber cylinder vibration sinks and is inserted into deep soft soil foundation
The middle building enclosure for forming a water proof, then this emptied of water go along with sb. to guard him in space by other pile monkeys to ground plant stake or
Bearing pile is constructed, therefore, vibration hammer can not directly carry out large-scale foundation pile pile sinking operation, and only completing one goes along with sb. to guard him work
The insertion of skill structure.So the piling construction of large-scale foundation pile can only often use paddle type mill piling machine to carry out operation.
Existing paddle type mill piling machine mainly has diesel hammer and hydraulic hammer.Wherein diesel pile hammer is important piling machinery
One of, its structure type mainly has guide rod type diesel pile hammer and tubular diesel pile hammer.Its work of guide rod type diesel pile hammer
Make principle similar to single-cylinder double stroke diesel engine, it is pressed in using plunger to hammer seat into shape on pile cover, is tup along two guide rods using cylinder
Lifting, stake plug is relatively motionless during piling, and cylinder hammer then make to bounce up and down by opposite plunger, moves downward when cylinder is hammered into shape and enters its cylinder holes cover
During plunger with plunger ring, then the gas in cylinder chamber is more moved downward by piston ring packing, cylinder hammer, the gas pressure in cylinder chamber
Bigger, gas temperature raising, when reaching certain pressure and temperature, high pressure fuel is injected into cylinder chamber and explodes, generation of exploding
On the one hand kinetic energy send down stake, cylinder hammer is on the other hand made to takeoff to prepare subsequent cycle.Tubular diesel pile hammer is being constructed
During operation, upper piston comes off and free-falling from undercarriage, when upper piston falls the suction/exhousting hole by lower cylinder, starts to press
Air in the lower cylinder of contracting, when upper piston head impact lower piston shock surface and makes diesel oil atomization be splashed in combustion chamber, simultaneously
Stake is laid；The indoor mist of oil that burns is ignited exploding, and generated explosive force continues down to beat stake, and makes upper piston upward
Spring, then upper piston setting point fuel spray again, so moves in circles, realizes the operation of piling construction.Either guide rod type
Diesel pile hammer or tubular diesel pile hammer, when work be constantly present a large amount of fuel oil chemical energy be not converted into it is useful
It hits kinetic energy and is converted to thermal energy, effective energy conversion ratio is low, be easy to cause burning and deteriorates, fuel oil incomplete combustion, row
Gas smoke intensity is high, and can emerge billowing black smoke, generate a large amount of harmful smoke and soot particulates object；In addition cylinder cavity configuration is extensive, impact
Vibrations are strong, can also generate it is violent fire vibrations and blast impulse, cause strong low frequency, high very noisy.Noise, vibration and
Fume pollution is the insurmountable problem of diesel hammer, and diesel hammer is due to the limitation of thermal capacitance product and efficiency, maximum theoretically
The jump bit core quality of diesel hammer also can only achieve 15 tons, this and the hundreds of kilojoules of large-scale foundation pile even the strike energy of thousands of kilojoules
Amount requirement is apparent far apart, cannot meet the construction requirement of large scale prefabricated stake at all.
Existing hydraulic pile hammer mainly has two kinds of single-acting formula and double-acting type by its structure and operation principle, although liquid
Pressure pile hammer has the characteristics that piling is efficient, noise low vibration is small, without fume pollution, but due to existing hydraulic control circuit
Through-current capacity is small, and the pressure loss is big, and oil rub resistance ability is weak, and action sensitivity is not high, and there are impact velocity is low, response speed is slow, hammer
Hit the deficiency of long action time and poor structure rigidity, the hydraulic pile hammers of these structures is with blow speed and blow energy
It improves, back pressure is inevitably formed in hydraulic cylinder oil pocket, blow energy and speed are restricted, and can not equally be met
The blow energy requirement of the large-scale hundreds of kilojoules of foundation pile even thousands of kilojoules.Chinese patent ZL97122587.7 discloses a kind of hydraulic pressure
Hammer, the hydraulic hammer is using single pole double acting hydraulic cylinder as power source, and the slide core control valve for passing through a particular design realizes hydraulic cylinder
Two chambers connect, and the purpose of the patent formula is to improve the functional reliability of hydraulic hammer.But in the hydraulic hammer of the technical solution
Slide core control valve arrangement it is sufficiently complex, not only can give assembling, safeguard all bring difficulty, but also the response speed of valve body restricts again
The strike frequency and blow energy of hydraulic hammer；Especially hydraulic cylinder is limited by two slide core valves and causes the through-flow of hydraulic system
Amount can not improve, and be only applicable to small flow hydraulic system, it is difficult to realize big flow, high frequency time and large impact stroke, be only present in
In small building construction.With architectural engineering to enlargement direction develop, construction environment requirement it is increasingly strict under conditions of, stake work
Machinery needs the blow energy of bigger and simpler and more direct structure design and more structurally sound working performance.
Invention content
The technical problems to be solved by the invention are to provide a kind of big energy hydraulic pile hammer of high frequency, not only without gas from oil burning
It is granular material discharged, it is small on construction environment influence, and control easy to operation, it can realize the big energy strike of high frequency time.
In order to solve the above-mentioned technical problem, the big energy hydraulic pile hammer of high frequency of the invention, should including hydraulic pump and hammer core
Hammer core is reciprocally slidably supported on hammer core guide part, and hydraulic cylinder, the work of hydraulic cylinder are installed on hammer core guide part
Stopper rod overhanging end is connected with hammer core, and the hydraulic cylinder includes the inner cylinder liner and outer cylinder sheath of spaced suit, inner cylinder liner and outside
The both ends of cylinder sleeve are fixedly installed cylinder bottom and cylinder cap respectively, and oil inlet passage is formed between inner cylinder liner and outer cylinder sheath；The inner casing
Piston is movably set in set, the piston rod being fixedly connected with the piston passes axially through cylinder cap and hydrostatic support set and is supported on quiet
Hydraulic support is put on, and hydrostatic support set is fixedly installed on cylinder cap, and static pressure oil inlet is provided on hydrostatic support set and static pressure returns
Hydraulic fluid port；Cylinder body oil inlet and cylinder body oil return opening are provided on cylinder bottom, between cylinder body oil inlet and inner cylinder liner and outer cylinder sheath into
Oily channel is connected, which leads to the rod chamber of hydraulic cylinder further through the fuel feed hole on inner cylinder liner, cylinder body oil return opening with
The rodless cavity connection of hydraulic cylinder；The oil outlet of hydraulic pump and to the pressure oil port P for being connected to cylinder body oil inlet and the second inserted valve
Mouthful, the B hydraulic fluid ports of the second inserted valve are connected with the A hydraulic fluid ports of the first inserted valve, and the B hydraulic fluid ports of the first inserted valve are connected to the cylinder on cylinder bottom
Body oil return opening, the oil return inlet T mouth of the first inserted valve are connected with fuel tank；The P hydraulic fluid ports of control valve and the pressure oil port P of the second inserted valve
Mouthful connection, the T hydraulic fluid ports of control valve connect with the oil return inlet T mouth of the first inserted valve, and the of the A hydraulic fluid ports of control valve and the first inserted valve
One inserted valve control chamber connects, and the B hydraulic fluid ports of control valve are connected with the second inserted valve control chamber of the second inserted valve.
In said structure, it due to being used as the power source for carrying hammer using hydraulic cylinder, will not both generate in the course of work violent
Fire vibrations and the high intensity noise caused by blast impulse, will not more generate caused by the pollutants such as harmful smoke particle
Atmosphere pollution can realize clean construction, small to surrounding environment influence, readily satisfy increasingly strict environmental requirement；Using liquid
Cylinder pressure also has the characteristics that high energy efficiency as power source, and hydraulic energy caused by hydraulic pump is largely converted into strike hammer body
Potential energy, and oil circuit hydraulic slip is small, can efficiency reach more than 80%, far above the energy efficiency of the diesel pile hammer less than 30%,
With the advantage that blow energy is big, energy is efficient.Due also to the cylinder body of hydraulic cylinder employs the cylinder body of inside and outside cylinder sleeve mutual sheathing
Structure, this structure substantially increase the integral rigidity and structural stability of hydraulic cylinder, effectively enhance the anti-impact of hydraulic cylinder
It hits, shock resistance, is more suitable for the impact pile hammer of the big energy of high frequency time；Inside, the oil inlet passage that outer shell inner room is formed, letter
Hydraulic cylinder oil channel structures are changed, have enable easily to concentrate on main control valve block into and out of oil circuit, compact-sized reasonable, control is more
Reliably, the tie point of hydraulic cylinder and high-pressure oil pipe is reduced, avoids the Probability of the failures such as oil leak, draining, use is safer
Reliably, the length and occupied space of connected pipes are also effectively reduced, avoid in pile hammer use because oil pipe winding, collision and
The use failure impacted and formed, therefore set cylinder structure is not only rational in infrastructure compact, it is safe and reliable, and it is easy to implement liquid
Cylinder pressure big flow, high frequency task, shock resistance is good, and failure rate is low.Again due to the hydraulic cylinder and cartridge valve controlled in the present invention
Hydraulic system processed can form differential hydraulic system, and when pile hammer carries hammer, high pressure oil caused by hydraulic pump enters directly into
The rod chamber of hydraulic cylinder, and the oil return of rodless cavity is directly flowed back into fuel tank, oil inlet and oil return smooth channel are fast, resistance
Small, flow is big；The oil inlet of hydraulic cylinder and oil return opening are interconnected by inserted valve when pile hammer is dropped hammer, and form differential company
It connects so that rod chamber and rodless cavity are interconnected, and the flow of rodless cavity is more to be mended from rod chamber other than the fuel feeding of hydraulic pump
The oil return entered, the fuel feeding of hydraulic pump and the fluid of rod chamber converge flows to rodless cavity together, flow increase so that piston driving is lived
Stopper rod quickly drops hammer downwards.Simultaneously because hydraulic cylinder rod chamber and rodless cavity piston area product moment, the stress at piston both ends is brought
Difference drops hammer hour hammer core in addition to by gravity, also adds the downward hydraulic thrust of piston so that strike of the hammer core to foundation pile
Power bigger, therefore not only blow energy is big for the hydraulic system of the differential connection, but also reciprocating motion speed is fast, realizes high frequency
The strike pile sinking of secondary, big energy.The hydraulic control system of the present invention constitutes inserted valve using the insert loaded valve of pilot control valve
Heading control loop, negotiability is big, and the pressure loss is small, and main valve plug stroke is short, and response is fast, is active in one's movements, while also has knot
Structure is simple, easy to control, it is stable and reliable in work the characteristics of, ensure that hydraulic hammer realizes big flow, high speed and high blow energy
Requirement, meet pile hammer to enlargement, the actual needs that develops of large-tonnage direction.Again since piston rod passes axially through cylinder
Lid and hydrostatic support cover and are supported on hydrostatic support and put on, which to form static pressure oil between piston rod and hydrostatic support set
Film, piston rod are separated in high speed moves back and forth by pressure film and splicing sleeve, and resistance to sliding greatly reduces, and friction coefficient is big
To reduce so that the service life and reliability of hydraulic cylinder greatly ensured, the operation is stable, and service life is long.In static pressure
Static pressure oil inlet and static pressure oil return opening on splicing sleeve are set, not only ensure that the reliable and stable of static pressure oil film, support effects are good, and
And generated heat accumulation during the strike of pile hammer high frequency can be avoided so that oil film uniformity of temperature profile is stablized；It is inside and outside
The oil inlet passage formed between cylinder sleeve leads to the rod chamber of hydraulic cylinder by the fuel feed hole on inner cylinder liner, and this structure is also convenient for shape
Into piston buffer structure, impact failure of the descent of piston to cylinder body and cylinder cap when avoiding dropping hammer.
A kind of preferred embodiment of the present invention, the lower end of the hydraulic cylinder are supported on by cylinder cap on lower support flange,
The upper end of hydraulic cylinder is supported on support flange, and upper support flange and lower support flange are mutually permanently connected；Lower support flange
It is fixedly installed in the top of hammer core guide part.Compact-sized simple, integral rigidity is good, is easily installed maintenance.
The preferred embodiment of the present invention, the hammer core guide part are slideably positioned in this using cartridge type guide frame, hammer core
In guide cylinder.Steering capability is good, and strike of dropping hammer is accurate, can effective protection hammer core.
The further embodiment of the present invention, the lower support flange fix branch by branch sleeve and sleeve connection flange
It holds in the hammer core guide part upper end of tubular.The structure not only advantages of simple, convenient for manufacturing and installing, and facilitates to hydraulic cylinder
Maintenance.
The preferred embodiment of the present invention, the overhanging end of the piston rod are fixedly connected with shaft coupling, and the one of the shaft coupling
End is hinged with hammer core connecting rod, and the other end of the hammer core connecting rod is equipped with connecting rod convex shoulder, and both sides are separately installed with above and below connecting rod convex shoulder
Upper butterfly spring and lower butterfly spring, butterfly spring and lower butterfly spring are pressed by butterfly spring gland in the butterfly spring mounting hole corresponding to hammer core on this.It adopts
Hammer core connecting rod and shaft coupling is made to be hinged with shaft coupling and hammer core link mechanism, avoid hammer core elliptical gear bias to hydraulic cylinder and
The destruction that twist and warping caused by piston rod are acted on and formed ensures hydraulic cylinder normal work；Hammer core connecting rod passes through butterfly spring
It is connected with hammer core, not only mitigates negative effect of the hammer core impact to hydraulic cylinder, but also prevent because connecting caused by impact vibration
Fitting loosens.
The preferred embodiment of the present invention, the hydrostatic support set is on cylinder cap, in hydrostatic support set and piston rod
Between be provided with static pressure oil clearance；The oil outlet of hydraulic pump is connected to static pressure fuel feed hole by pressure reducing valve.The upper static pressure of hydrostatic support set
Fuel feed hole and static pressure oil return hole are connected with static pressure oil clearance；Static pressure is both provided on the outside of static pressure fuel feed hole and static pressure oil return hole
Sealing element.The reliable hydrostatic support to piston rod is realized, is allowed to form stable branch between hydrostatic support set and piston rod
Oil film is held, has the advantages that frictional resistance and friction power loss are small.
The preferred embodiment for the present invention is communicated with high pressure accumulator on the cylinder body oil inlet；The T of first inserted valve
Mouth is communicated with oil-return accumulator；The oil outlet of the hydraulic pump is communicated with voltage stabilizing overflow pile-up valve.The control valve is two four
Electric change valve, the hydraulic pump are Variable plunger pump；The oil-return accumulator and high pressure accumulator are bladder accumulator
Or piston accumulator.The system can effectively steady hydraulic system oil pressure, absorb high-pressure pulsating, prevent high pressure oil from backflowing, ensure
Hydraulic system steady operation.
The preferred embodiment for the present invention, the A hydraulic fluid ports and B hydraulic fluid ports of first inserted valve each lead to the work of the first inserted valve
Chamber；P mouthfuls of the pressure oil port of second inserted valve is communicated with the second inserted valve working chamber.It can realize big flow, rapid operation.
Description of the drawings
To high frequency of the present invention, big energy hydraulic pile hammer is made further specifically with reference to the accompanying drawings and detailed description
It is bright.
Fig. 1 is the big energy hydraulic pile hammer of high frequency of the present invention（Mechanical structure portion）A kind of structure of specific embodiment is shown
It is intended to；
Fig. 2 is the system structure diagram of hydraulic cylinder and hydraulic control circuit in Fig. 1 illustrated embodiments；
Fig. 3 is the cross-sectional view of hydraulic cylinder in Fig. 1 illustrated embodiments；
Fig. 4 is I partial structurtes enlarged diagram in structure shown in Fig. 3；
Fig. 5 is hammer core attachment structure schematic diagram in Fig. 1 illustrated embodiments；
Fig. 6 is II partial structurtes enlarged diagram of structure shown in Fig. 5；
Fig. 7 is the shaft coupling of structure shown in Fig. 5 and the attachment structure schematic diagram of hammer core connecting rod；
Fig. 8 is the structure diagram for hammering core connecting rod in structure shown in Fig. 5 into shape.
In figure, 1-cylinder bottom, 2-cylinder block, 3-inner cylinder liner, 4-outer cylinder sheath, 5-fuel feed hole, 6-connection spacer, 7-
Cylinder cap, 8-hydrostatic support set, 9-oil leak hole, 10-static pressure fuel feed hole, 11-static pressure oil return hole, 12-piston rod, 13-work
Plug, the control of 14-cylinder body oil inlet, 15-cylinder body oil return opening, 16-hydraulic pump, the 17-the first inserted valve, the 18-the first inserted valve
Chamber, the 19-the first inserted valve working chamber, the 20-the second inserted valve, the 21-the second inserted valve control chamber, the 22-the second inserted valve work
Make chamber, 23-control valve, 24-voltage stabilizing overflow pile-up valve, 25-throttle valve, 26-pressure reducing valve, 27-oil-return accumulator, 28-
High pressure accumulator, 29-fuel tank, the integrated main valve block of 30-carry hammer cylinder, 31-, 32-upper support flange, 33-accumulator, 34-
Support element, 35-lower support flange, 36-branch sleeve, 37-sleeve connection flange, 38-shaft coupling, the core connection of 39-hammer
Bar, 40-butterfly spring gland, 41-above butterfly spring, 42-butterfly spring mounting base, 43-lower butterfly spring, 44-butterfly spring pedestal, 45-hammer cores are led
To part, 46-hammer core, 47-guide part connecting flange, 48-for beat piston, 49-piston sleeve, 50-piston limit part,
51-hydrostatic seal part, 52-static pressure oil clearance, 53-hinged gasket, 54-hinged spacer, 55-hinged washer, 56-hinged pressure
Lid, 57-connecting rod convex shoulder, 58-connection rod sphere.
Specific embodiment
The big energy hydraulic pile hammer of high frequency as shown in Figure 1（Hammer core is in pile driving position）, the hammer core of the hydraulic pile hammer
46 be a cylindrical alloy steel casting of 50 tons of weighing, which hammers 1.5 meters of the outer diameter of core into shape, 5.1 meters high；Hammer core guide part into shape
45 use cartridge type guide frame, that is, hammer core guide part 45 into shape in steel cylindrical tube shape structure, hammer core 46 can hammer core into shape along tubular and be oriented to
Part axial line is up and down reciprocatingly slidably disposed in the bobbin of hammer core guide part 45.Pass through in the lower end of the hammer core guide part 45 of tubular
Guide part connecting flange 47 is fixedly connected with piston sleeve 49, and the piston sleeve 49 is equally using cylinder tubular structure, in piston bush
Activity is placed with to beat piston 48 in cylinder 49, during strike should for beating the upper top surface of piston 48 directly by the strike of dropping hammer for hammering core 46 into shape,
It is then arcwall face for the bottom surface of piston 48 is beaten, is supported in the stake top of foundation pile by arcwall face for piston 48 is beaten；Hammer core 46 into shape
Hitting power of dropping hammer is broken by the way that dozen piston 48 is replaced to pass to foundation pile so as to which effective protection pile crown is not wounded.For beating piston 48
Waist uses waisting structure, and piston shackle member 50 is clamped ring structure, the clamping ring active card of piston shackle member 50 using dissection type
It inserts in beat the contracting waist location of piston 48, which is fixedly installed on piston sleeve 49, and this structure causes
It can move, and will not come off with piston sleeve 49 point in limited travel in an axial direction in piston sleeve 49 for piston 48 is beaten
From.
The cylinder cap 7 of the hydraulic cylinder lower end of pile hammer is fixedly connected and is supported on lower support flange 35, and hydraulic cylinder upper end leads to
It crosses cylinder bottom 1 and cylinder bottom seat 2 is fixedly attached on support flange 32；Upper support flange 32 and lower support flange 35 pass through support element
34 are mutually permanently connected, and so as to form the frame structure of a stabilization, hydraulic cylinder is located at the center of the rigid frame, in hydraulic pressure
Cylinder lateral surface is further sleeved with hydraulic cylinder sheath, the hydraulic cylinder sheath be fixedly installed on support flange 32 and lower support flange 35 it
Between, hydraulic cylinder sheath not only effective protection hydraulic cylinder, but also enhance the supporting structure stability of hydraulic cylinder.It is protected in hydraulic cylinder
The periphery of set is also installed with accumulator 33, which includes the high pressure accumulator 28 of hydraulic control system and oil return stores
Can device 27, this structure causes accumulator closer to hydraulic cylinder, convenient for accumulator fast reaction and Absorbing Fluctuation at work.
Lower support flange 35 is fixedly installed in the hammer core for being cylindrical in shape structure by branch sleeve 36 and sleeve connection flange 37
The upper end of guide part 45, this structure are conducive to the installation and maintenance of hydraulic cylinder.It is fixedly connected with and carries on upper support flange 32
It hammers cylinder 30 into shape, integrated main valve block 31 is provided with carrying in hammer cylinder 30, which can reduce the connection oil of hydraulic system
Pipe and oil circuit leakage point.Hammer lifting lug is carried in the top setting for carrying hammer cylinder 30, to lift by crane entire piling.
As shown in Figure 2,3, hydraulic cylinder includes the inner cylinder liner 3 and outer cylinder sheath 4 of mutual concentric spacing suit, in 3 He of inner cylinder liner
Oil inlet passage is formd between the gap of outer cylinder sheath 4.The upper end of inner cylinder liner 3 and outer cylinder sheath 4 is fixedly welded with cylinder block 2, in cylinder
Cylinder bottom 1 is fixedly connected in housing 2, cylinder body oil inlet 14 and cylinder body oil return opening 15 are provided on cylinder bottom 1.It is living in inner cylinder liner 3
Dynamic to be provided with piston 13, the lower end of the piston 13 is fixed with piston rod 12, and the cylinder body oil inlet 14 on cylinder bottom 1 is through on cylinder block 2
Correspondence runner be connected with the oil inlet passage between inner cylinder liner 3 and outer cylinder sheath 4, the oil inlet passage is through 3 lower end position of inner cylinder liner
Fuel feed hole be connected to the rod chamber of hydraulic cylinder inner cylinder liner 3；Cylinder body oil return opening 15 on cylinder bottom 1 is connected with the rodless cavity of hydraulic cylinder
It is logical.The lower end of inner cylinder liner 3 and outer cylinder sheath 4 is fixedly connected on connection spacer 6, inner cylinder liner 3 and 4 lower end of outer cylinder sheath by connection every
Set 6 is fixedly connected with cylinder cap 7.Hydrostatic support set 8 is also installed on cylinder cap 7, piston rod 12 passes through cylinder cap 7 and static pressure branch
Bearing sleeve 8 and be supported on hydrostatic support set 8 on.
The hydraulic control circuit part of pile hammer includes hydraulic pump 16, which can be single or multiple go here and there simultaneously
The Variable plunger pump of connection is formed.The inlet port of hydraulic pump 16 is connected to fuel tank 29, and the oil outlet of hydraulic pump 16 is concurrently connected to cylinder
P mouthfuls of the pressure oil port of 14 and second inserted valve 20 of body oil inlet, the B hydraulic fluid ports of the second inserted valve 20 and the A with the first inserted valve 17
Hydraulic fluid port is connected, and the B hydraulic fluid ports of the first inserted valve 17 are connected to the cylinder body oil return opening 15 on cylinder bottom 1, the oil return inlet T of the first inserted valve 17
Mouth is connected with fuel tank 29.Oil-return accumulator 27 is communicated in the oil return opening of the first inserted valve 17, to absorb oil return pulsation, in cylinder
Body oil inlet 14 is communicated with high pressure accumulator 28, which has energy storage and the double action of Absorbing Fluctuation, differential
When high pressure accumulator 28 also increase pressure and hydraulic fluid flow rate in hydraulic circuit.Oil-return accumulator 27 and high pressure accumulator 28 are equal
Using piston accumulator.
Control valve 23 uses two-position four-way solenoid directional control valve, which is used as pilot valve and two inserted valves（First
Inserted valve 17, the second inserted valve 20）Form inserted valve direction control circuit.The P hydraulic fluid ports of control valve 23 and the second inserted valve 20
P mouthfuls of connections of pressure oil port, the T hydraulic fluid ports of control valve 23 are connected with the oil return inlet T mouth of the first inserted valve 17, the A hydraulic fluid ports of control valve 23
It is connected with the first inserted valve control chamber 18 of the first inserted valve 17, the second of the B hydraulic fluid ports of control valve 23 and the second inserted valve 20 inserts
Dress valve control chamber 21 connects.The A hydraulic fluid ports and B hydraulic fluid ports of first inserted valve 17 each lead to the first inserted valve working chamber 19；Described second
P mouthfuls of the pressure oil port of inserted valve 20 is communicated with the second inserted valve working chamber 22.
The oil outlet of hydraulic pump 16 is also connected to the static pressure fuel feed hole on hydrostatic support set 8 by pressure reducing valve 26 and throttle valve 25
10.Pressure reducing valve 26 and throttle valve 25 are so that the fluid into hydrostatic support set 8 has the oil pressure and flow of adaptation.In hydraulic pump 16
Outlet hydraulic fluid port be also connected to fuel tank 29 by stablizing overflow pile-up valve 24, which includes an inserted valve and overflows
Flow valve.
As shown in figure 4, the static pressure oil return hole 11 of static pressure fuel feed hole 10 is provided on hydrostatic support set 8, in hydrostatic support
Static pressure oil clearance 52 is formed between set 8 and piston rod 12, hydrostatic seal part 51, static pressure are both provided on the outside of the both ends of static pressure oil clearance 52
Fuel feed hole 10 and static pressure oil return hole 11 are connected with static pressure oil clearance 52, the static pressure oil return hole 11 positioned at 10 upside of static pressure fuel feed hole
Lead to fuel tank 29.Oil leak hole 9 is additionally provided on hydrostatic support set 8, the both sides of the oil leak hole 9 are also equipped with hydrostatic seal part 51,
Oil leak hole 9 also leads to fuel tank 29, and oil leak hole 9 is located at the lower section of static pressure fuel feed hole 10, and oil leak hole 9 is used to guide Leakage Energy into oil
Case, to avoid the influence to construction environment.In the seal groove of hydrostatic support set 8, which adopts hydrostatic seal part 51
With common rubber seal.
As shown in figure 5, the 12 overhanging lower end of piston rod of hydraulic cylinder is mutually permanently connected with shaft coupling 38 by screw thread, piston
Bar 12 is connected to the upper end of shaft coupling 38.The lower end of shaft coupling 38 and the mutually company of strand of hammer core connecting rod 39, the lower end of hammer core connecting rod 39
It is fixedly connected on hammer core 46 by butterfly spring structure, which includes upper butterfly spring 41 and lower butterfly spring 43.
As shown in Fig. 6, Fig. 8, hammer core connecting rod 39 is equipped with connecting rod convex shoulder 57, leads to respectively in the both sides up and down of connecting rod convex shoulder 57
It crosses corresponding butterfly spring bushing and is set with butterfly spring 41 and lower butterfly spring 43, upper butterfly spring 41 and lower butterfly spring 43 are by multi-disc butterfly spring piece
It is stacked to form.Upper butterfly spring 41 and lower butterfly spring 43 are installed on the butterfly spring mounting hole corresponding to hammer core 46 further through butterfly spring mounting base 42
In, upper butterfly spring 41 and lower butterfly spring 43 are pressed in hammer core 46 by the butterfly spring gland 40 for being bolted to butterfly spring mounting hole aperture
In butterfly spring mounting hole, lower butterfly spring 43 is supported on butterfly spring pedestal 40, and butterfly spring pedestal 40 is installed on the butterfly spring mounting hole on hammer core 46
Bottom hole.
As shown in Figure 7, Figure 8, the top of hammer core connecting rod 39 is connection rod sphere 58, and the upper lower support surface of connection rod sphere 58 is in
On same Surface of Sphere, the upper supporting spherical of connection rod sphere 58 is supported on hinged gasket 53, the lower support spherical surface of connection rod sphere 58
On be cased with hinged washer 55, be provided with hinged spacer 54 between hinged gasket 53 and hinged washer 55, hinged washer 55 and hinge
Camera 53 is pressed by hinged gland 56 in the hinge mounting hole of 38 lower end of shaft coupling, positioned at hinged 56 centre bit of gland
The tie rod holes aperture put is more than the bar diameter of hammer core connecting rod 39, and the hinge that hinged gland 56 is rotatably connected in shaft coupling 38 by screw thread is installed
The orifice position in hole.
When control valve 23 is in position shown in Fig. 2, A hydraulic fluid port and P oil of the first inserted valve control chamber 18 through control valve 23
Mouth is connected with the oil outlet of hydraulic pump 16, and the first inserted valve 17 is closed；The second inserted valve control chamber 21 passes through at this time
The B hydraulic fluid ports and T hydraulic fluid ports of control valve 23 lead to fuel tank 29, and the second inserted valve 20 is in opening state；Cylinder body oil inlet 14 passes through at this time
The second inserted valve working chamber 22, the B hydraulic fluid ports of the second inserted valve 20, the first inserted valve working chamber 19 is crossed with cylinder body oil return opening 15 to be connected
Logical, hydraulic cylinder forms differential connection, and hydraulic oil pushes piston fast downlink.
When the slide core of control valve 23 is in another operating position, A oil of the first inserted valve control chamber 18 through control valve 23
Mouth and T hydraulic fluid ports are connected with fuel tank 29, and the first inserted valve 17 is in opening state, and cylinder body oil inlet 14 is through the second inserted valve working chamber
19 lead to fuel tank 29；Hydraulic fluid port and P hydraulic fluid port of the second inserted valve control chamber 21 through control valve 23 are connected with the oil outlet of hydraulic pump 16,
Second inserted valve 20 is closed, and differential circuit is closed, after the pressure oil of hydraulic pump 16 is directly entered cylinder body oil inlet 14, then through into
Oily channel and fuel feed hole 5, which are entered in the rod chamber of hydraulic cavities, pushes piston stroking upward, and realizes and carry hammer, at this time hydraulic cylinder rodless cavity
In pressure oil be back to fuel tank 29 through 15 and first inserted valve 17 of cylinder body oil return opening, so as to fulfill quick oil feeding and quick return
Oil.
A kind of above-mentioned specific embodiment for having enumerated the present invention, but the present invention is not limited thereto, without prejudice to the present invention
Modifications and variations there are many more under the premise of basic principle.Core guide part is such as hammered into shape in addition to using core structure, can also be and lead
The common pile hammer guide frame such as rod-type；The hammer core guide part of cartridge type can be not only cylindric, can also be square tubular etc.
Cylinder tubular structure.Hydraulic pump is either the hydraulic pump of Variable plunger pump or other common types.Accumulator equally may be used
To be the accumulator of the structure types such as piston type, gasbag-type.Hydraulic cylinder sheath can be both set in hydraulic cylinder peripheral side, it can also
It is not set with hydraulic cylinder sheath.Fixed bearing method of the hydraulic cylinder above hammer core guide part is more not limited to the knot of the present embodiment
Core structure equally may be used in structure, support element.Hydrostatic support is covered either being fixedly connected on cylinder cap or embedding
Loaded in cylinder cap.These transformation and improvement are each fallen in protection scope of the present invention.
Claims (10)
1. a kind of big energy hydraulic pile hammer of high frequency, including hydraulic pump（16）With hammer core（46）, the hammer core（46）Reciprocally slide
Ground is supported on hammer core guide part（45）On, in hammer core guide part（45）On be installed with hydraulic cylinder, the piston rod of hydraulic cylinder
（12）Overhanging end and hammer core（46）It is connected, it is characterised in that：The hydraulic cylinder includes the inner cylinder liner of spaced suit（3）With
Outer cylinder sheath（4）, inner cylinder liner（3）And outer cylinder sheath（4）Both ends be fixedly installed cylinder bottom respectively（1）And cylinder cap（7）, in inner cylinder liner
（3）And outer cylinder sheath（4）Between form oil inlet passage；The inner cylinder liner（3）Inside it is movably set with piston（13）, with piston（13）Gu
Surely the piston rod connected（12）Pass axially through cylinder cap（7）With hydrostatic support set（8）And it is supported on hydrostatic support set（8）On, it is quiet
Hydraulic support set（8）It is fixedly installed in cylinder cap（7）On, in hydrostatic support set（8）On be provided with static pressure oil inlet（10）It is returned with static pressure
Hydraulic fluid port（11）；In cylinder bottom（1）On be provided with cylinder body oil inlet（14）With cylinder body oil return opening（15）, cylinder body oil inlet（14）With inner casing
Set（3）And outer cylinder sheath（4）Between oil inlet passage be connected, the oil inlet passage is further through inner cylinder liner（3）On fuel feed hole（5）It is logical
To the rod chamber of hydraulic cylinder, cylinder body oil return opening（15）It is connected with the rodless cavity of hydraulic cylinder；Hydraulic pump（16）Oil outlet and to even
Pass to cylinder body oil inlet（14）With the second inserted valve（20）P mouthfuls of pressure oil port, the second inserted valve（20）B hydraulic fluid ports and first insert
Fill valve（17）A hydraulic fluid ports be connected, the first inserted valve（17）B hydraulic fluid ports be connected to cylinder bottom（1）On cylinder body oil return opening（15）, first
Inserted valve（17）Oil return inlet T mouth and fuel tank（29）Connection；Control valve（23）P hydraulic fluid ports and the second inserted valve（20）Pressure oil
P mouthfuls of connections of mouth, control valve（23）T hydraulic fluid ports and the first inserted valve（17）Oil return inlet T mouth connection, control valve（23）A hydraulic fluid ports
With the first inserted valve（17）The first inserted valve control chamber（18）Connection, control valve（23）B hydraulic fluid ports and the second inserted valve（20）
The second inserted valve control chamber（21）Connection.
2. the big energy hydraulic pile hammer of high frequency according to claim 1, it is characterised in that：The lower end of the hydraulic cylinder passes through
Cylinder cap（7）It is supported on lower support flange（35）On, the upper end of hydraulic cylinder is supported on support flange（32）On, upper support flange
（32）With lower support flange（35）It is mutually permanently connected；Lower support flange（35）It is fixedly installed in hammer core guide part（45）It is upper
Side.
3. the big energy hydraulic pile hammer of high frequency according to claim 1 or 2, it is characterised in that：The hammer core guide part
（45）Using cartridge type guide frame, core is hammered into shape（46）It is slideably positioned in the guide cylinder.
4. the big energy hydraulic pile hammer of high frequency according to claim 3, it is characterised in that：The lower support flange（35）It is logical
Cross branch sleeve（36）With sleeve connection flange（37）It is fixedly attached to the hammer core guide part of tubular（45）Upper end.
5. the big energy hydraulic pile hammer of high frequency according to claim 1, it is characterised in that：The piston rod（12）It is overhanging
End is fixedly connected with shaft coupling（38）, the shaft coupling（38）One end be hinged with hammer core connecting rod（39）, the hammer core connecting rod（39）'s
The other end is equipped with connecting rod convex shoulder（57）, in connecting rod convex shoulder（57）Upper and lower both sides are separately installed with butterfly spring（41）With lower butterfly spring
（43）, butterfly spring on this（41）With lower butterfly spring（43）Pass through butterfly spring gland（40）It is pressed in hammer core（46）Corresponding butterfly spring mounting hole
In.
6. the big energy hydraulic pile hammer of high frequency according to claim 1, it is characterised in that：The hydrostatic support set（8）It is embedding
Loaded on cylinder cap（7）On, in hydrostatic support set（8）And piston rod（12）Between be provided with static pressure oil clearance（52）；Hydraulic pump（16）'s
Oil outlet passes through pressure reducing valve（26）It is connected to static pressure fuel feed hole（10）.
7. the big energy hydraulic pile hammer of high frequency according to claim 6, it is characterised in that：Hydrostatic support set（8）On it is quiet
It is pressed into oilhole（10）With static pressure oil return hole（11）With static pressure oil clearance（52）It is connected；In static pressure fuel feed hole（10）With static pressure oil return hole
（11）Outside be both provided with hydrostatic seal part（51）.
8. the big energy hydraulic pile hammer of high frequency according to claim 1, it is characterised in that：The cylinder body oil inlet（14）On
It is communicated with high pressure accumulator（28）；First inserted valve（17）T mouths be communicated with oil-return accumulator（27）；The hydraulic pump
（16）Oil outlet be communicated with voltage stabilizing overflow pile-up valve（24）.
9. the big energy hydraulic pile hammer of high frequency according to claim 1, it is characterised in that：The control valve（23）It is two
Four-way electromagnetic reversing valve, the hydraulic pump（16）For Variable plunger pump；The oil-return accumulator（27）And high pressure accumulator（28）
For bladder accumulator or piston accumulator.
10. the big energy hydraulic pile hammer of high frequency according to claim 1, it is characterised in that：First inserted valve（17）
A hydraulic fluid ports and B hydraulic fluid ports each lead to the first inserted valve working chamber（19）；Second inserted valve（20）P mouthfuls of pressure oil port and the
Two inserted valve working chambers（22）It communicates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291946.6A CN108239979B (en) | 2018-03-30 | 2018-03-30 | High-frequency high-energy hydraulic pile hammer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291946.6A CN108239979B (en) | 2018-03-30 | 2018-03-30 | High-frequency high-energy hydraulic pile hammer |
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| CN108239979B CN108239979B (en) | 2024-02-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109137909A (en) * | 2018-10-29 | 2019-01-04 | 福建海威液压机械有限公司 | The control system of double-action hydraulic pile hammer |
| CN109340214A (en) * | 2018-12-17 | 2019-02-15 | 广东力源液压机械有限公司 | A kind of high-power direction valve oil cylinder of integrated-type and its control method |
| CN109458363A (en) * | 2018-12-19 | 2019-03-12 | 江苏巨威机械有限公司 | Hydraulic pile hammer |
| CN110966275A (en) * | 2019-12-30 | 2020-04-07 | 广东力源液压机械有限公司 | Damping buffering method of large-flow throttling buffering cartridge valve and cartridge valve |
| CN112176997A (en) * | 2020-09-16 | 2021-01-05 | 林清辉 | High-frequency vibration type pile driving mechanism |
| CN116652084A (en) * | 2023-08-01 | 2023-08-29 | 山西恒达欣泰锻造股份有限公司 | Self-adaptive hydraulic piston adjusting system and leakage preventing method thereof |
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| CN110966275B (en) * | 2019-12-30 | 2024-05-14 | 广东力源液压机械有限公司 | Damping buffer method of large-flow throttling buffer cartridge valve and cartridge valve |
| CN112176997A (en) * | 2020-09-16 | 2021-01-05 | 林清辉 | High-frequency vibration type pile driving mechanism |
| CN116652084A (en) * | 2023-08-01 | 2023-08-29 | 山西恒达欣泰锻造股份有限公司 | Self-adaptive hydraulic piston adjusting system and leakage preventing method thereof |
| CN116652084B (en) * | 2023-08-01 | 2023-10-13 | 山西恒达欣泰锻造股份有限公司 | Self-adaptive hydraulic piston adjusting system and leakage preventing method thereof |
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