CN208415251U - Differential type hydraulic pile hammer - Google Patents
Differential type hydraulic pile hammer Download PDFInfo
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- CN208415251U CN208415251U CN201820462975.XU CN201820462975U CN208415251U CN 208415251 U CN208415251 U CN 208415251U CN 201820462975 U CN201820462975 U CN 201820462975U CN 208415251 U CN208415251 U CN 208415251U
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Abstract
The utility model discloses a kind of differential type hydraulic pile hammer, it is slidably supported on hammer core guide part that it hammers core into shape, hydraulic cylinder is fixedly connected with hammer core guide part, the piston rod of hydraulic cylinder is connected with hammer core, the both ends of hydraulic cylinder inner cylinder liner and outer cylinder sheath are fixedly installed cylinder bottom and cylinder cap respectively, and 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, and hydrostatic support set is fixedly installed on cylinder cap, is provided with static pressure fuel feed hole and static pressure oil return hole on hydrostatic support set；Cylinder body oil inlet and cylinder body oil return opening are provided on cylinder bottom, cylinder body oil inlet is connected with oil inlet passage, which 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 to the rodless cavity of hydraulic cylinder.The hydraulic pile hammer is simple and reasonable, small to surrounding environment influence, is able to achieve the big energy piling of high frequency time, particularly suitable large size foundation pile construction.
Description
Technical field
The utility model relates to a kind of piling machinerys for architectural engineering foundation construction, more particularly to are able to achieve hydraulic time
The hydraulic pile hammer of road differential connection.
Background technique
Piling machinery is the necessary equipment by stake injection stratum to reinforce foundation capability, with the large size of architectural engineering
Change and the complication of pile foundation engineering coefficient, so that pile foundation construction difficulty becomes higher and higher, foundation pile length and diameter also becomes
Must be increasing, this requires for the piling machinery on foundation pile injection stratum to be had higher blow energy and higher strike
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 carried out heavy, pile pulling operation, the construction of the various pile types such as tubular pole, 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 first that heavy caliber cylinder vibration is heavy and is inserted into deep soft soil foundation
It is middle formed a water proof building enclosure, 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 directly can not carry out pile sinking operation to large-scale foundation pile, 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, they are all to be with burning diesel oil
Energy source, therefore either guide rod type diesel pile hammer or tubular diesel pile hammer, when work, are constantly present a large amount of combustion
Oily chemical energy is not converted into useful strike kinetic energy and is converted to thermal energy, and effective energy conversion ratio is low, be easy to cause combustion
It burns and deteriorates, fuel burning is incomplete, and exhaust smoke 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, and impact endurance test shock is strong, can also generate it is violent fire vibration and blast impulse, cause strong
Low frequency, high very noisy.Noise, vibration and fume pollution are the insurmountable problems of diesel hammer, and diesel hammer is due to thermal capacitance product
With the limitation of efficiency, the jump bit core quality of maximum diesel hammer also can only achieve 15 tons theoretically, this and large-scale foundation pile number
The blow energy requirement of hundred kilojoules even thousands of kilojoules is obvious far apart, and the construction for not being able to satisfy large scale prefabricated stake is wanted
It asks.
Hydraulic pile hammer mainly has single-acting formula and two kinds of double-acting type by its structure and working principle, although hydraulic pile
Hammer has the characteristics of piling is high-efficient, noise low vibration is small, without fume pollution, but due to the through-current capacity of existing hydraulic control circuit
Small, the pressure loss is big, and oil rub resistance ability is weak, and action sensitivity is not high, and that there are impact velocitys is low, response speed is slow, hammer action
Time is long and the deficiency of poor structure rigidity, the hydraulic pile hammers of these structures with blow speed and blow energy raising,
Back pressure is inevitably formed in hydraulic cylinder oil pocket, blow energy and speed are severely limited, are equally unable to satisfy
The blow energy requirement of the large-scale hundreds of kilojoules of foundation pile even thousands of kilojoules.As architectural engineering develops to enlarged direction, construction
Under conditions of environmental requirement is increasingly strict, piling machinery needs bigger blow energy and simpler and more direct structure design, and
More structurally sound working performance.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of differential type hydraulic pile hammer, not only without gas from oil burning
It is granular material discharged, it is small on construction environment influence, and also blow energy is big, and blow speed is fast, and the pile sinking for being able to achieve large-scale foundation pile is applied
Work.
In order to solve the above-mentioned technical problem, the differential type hydraulic pile hammer of the utility model, including hydraulic cylinder and hammer core, hammer
Core is slidably supported, and on hammer core guide part, hydraulic cylinder is fixedly connected with hammer core guide part, and the piston rod of hydraulic cylinder is connected with hammer core
It connects, the hydraulic cylinder includes the inner cylinder liner and outer cylinder sheath for being spaced apart from each other suit, and fixation is set respectively at the both ends of inner cylinder liner and outer cylinder sheath
It is equipped with cylinder bottom and cylinder cap, forms oil inlet passage between inner cylinder liner and outer cylinder sheath；It is movably set with piston in the inner cylinder liner, with
The piston rod that piston is fixedly connected passes axially through cylinder cap and hydrostatic support set and is supported on hydrostatic support and puts on, hydrostatic support set
It is fixedly installed on cylinder cap, is provided with static pressure fuel feed hole and static pressure oil return hole on hydrostatic support set；Cylinder is provided on cylinder bottom
Body oil inlet and cylinder body oil return opening, cylinder body oil inlet be connected with oil inlet passage, the oil inlet passage further through on inner cylinder liner into
Oilhole leads to the rod chamber of hydraulic cylinder, and cylinder body oil return opening is connected to the rodless cavity of hydraulic cylinder.
In said structure, it due to being used as the power source for mentioning hammer using hydraulic cylinder, will not both generate in the course of work violent
Fire high intensity noise caused by vibration and blast impulse, will not more generate caused by the pollutants such as harmful smoke particle
Atmosphere pollution can be realized 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 80% or more, much higher than the energy efficiency of the diesel pile hammer less than 30%,
The advantage big with blow energy, energy is high-efficient.Again since the cylinder body of hydraulic cylinder uses the cylinder body of inside and outside cylinder sleeve mutual sheathing
Structure effectively enhances hydraulic cylinder to substantially increase the integral strength and rigidity and structural stability of hydraulic cylinder
Shock resistance, shock resistance are more suitable for the impact pile hammer of the big energy of high frequency time；Including oil inlet passage is arranged, outer cylinder sheath
Between, hydraulic cylinder oil channel structures are simplified, convenient for that will concentrate on main control valve block into and out of oil circuit, compact-sized reasonable, control is more
Reliably, the tie point for reducing hydraulic cylinder and high-pressure oil pipe, 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 of impact and formation, therefore set cylinder structure is not only structurally reasonable 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.Due also to the hydraulic cylinder in the utility model is convenient for structure
At differential hydraulic system, when pile hammer mentions hammer, high pressure oil caused by hydraulic pump enters directly into the rod chamber of hydraulic cylinder, and
The oil return of rodless cavity can be flowed back into directly in fuel tank again, oil inlet and oil return smooth channel；When pile hammer is dropped hammer hydraulic cylinder into
Hydraulic fluid port and oil return opening are interconnected by inserted valve, and form differential connection, so that rod chamber and rodless cavity are interconnected, no bar
The flow of chamber is other than the fuel feeding of hydraulic pump, the more oil return filled into from rod chamber, the fuel feeding of hydraulic pump and the oil of rod chamber
Liquid converges flows to rodless cavity together, and flow increases, so that piston driving piston rod quickly drops hammer downwards.Simultaneously because hydraulic cylinder has
Rod cavity and rodless cavity piston area product moment, the stress for bringing piston both ends is poor, drops hammer hour hammer core in addition to by gravity, also increases
The hydraulic thrust that piston is downward is added, so that hammer core is bigger to the hitting power of foundation pile, not only blow energy is big, but also moves back and forth
Speed is fast.Piston rod passes axially through cylinder cap and hydrostatic support set and is supported on hydrostatic support and puts on, which can make piston
Form static pressure oil film between bar and hydrostatic support set, piston rod in high speed reciprocating motion by pressure film and splicing sleeve every
It opens, resistance to sliding greatly reduces, and coefficient of friction is greatly lowered, so that the service life and reliability of hydraulic cylinder are greatly protected
Card, the operation is stable, long service life.Static pressure oil inlet and static pressure oil return opening are set on hydrostatic support set, not only ensure that quiet
Pressure oil film it is reliable and stable, support effects are good, and can be avoided pile hammer high frequency strike during caused by heat accumulation,
So that oil film uniformity of temperature profile is stablized；The oil inlet passage formed between inside and outside cylinder sleeve is led to by the fuel feed hole on inner cylinder liner
The rod chamber of hydraulic cylinder, this structure are also convenient for forming buffer piston structure, and piston downlink is to cylinder body and cylinder cap when avoiding dropping hammer
Impact failure.
A kind of preferred embodiment of the utility model, the hammer core guide part use cartridge type guide frame, hammer core sliding
It is set in the guide cylinder.Steering capability is good, and dropping hammer, it is accurate to hit, can effective protection hammer core.
The lower end of the further embodiment of the utility model, the hydraulic cylinder is supported on lower support flange by cylinder cap
On, the upper end of hydraulic cylinder is supported on support flange, and upper support flange and lower support flange are fixed to each other company by supporting element
It connects；The upper end that lower support flange is fixedly installed in hammer core guide part by connecting sleeve.Compact-sized simple, integral rigidity is good,
It is easily installed maintenance.
A kind of preferred embodiment of the utility model, the overhanging end of the piston rod are fixedly connected with shaft coupling, the company
One end of joint is hinged with hammer core connecting rod, and the other end of the hammer core connecting rod is connected by butterfly spring with hammer core.The butterfly spring includes
Upper butterfly spring and lower butterfly spring, hammer core connecting rod are equipped with connecting rod convex shoulder, and two sides are separately installed with upper butterfly spring under above and below connecting rod convex shoulder
Butterfly spring, butterfly spring and lower butterfly spring are pressed in the butterfly spring mounting hole corresponding to hammer core by butterfly spring gland on this.The upper butterfly spring and
Lower butterfly spring is installed in butterfly spring mounting hole corresponding to hammer core by butterfly spring mounting base.Made using shaft coupling and hammer core link mechanism
Core connecting rod and shaft coupling is hammered into shape to be hinged, avoid hammer core elliptical gear bias to the effect of twist and warping caused by hydraulic cylinder and piston rod and
It is formed by destruction, guarantees that hydraulic cylinder works normally；Hammer core connecting rod is connected by butterfly spring with hammer core, and hammer core punching is not only mitigated
The negative effect to hydraulic cylinder is hit, and is prevented because connector brought by impact vibration loosens, guarantees that hydraulic hammer is steady for a long time
Fixed work.
A kind of preferred embodiment of the utility model, the hydrostatic support set is on cylinder cap, in hydrostatic support set
Static pressure oil clearance is provided between piston rod；Static pressure fuel feed hole and static pressure oil return hole are connected to static pressure oil clearance.The hydrostatic support
It puts on and is additionally provided with oil leak hole, hydrostatic seal part is provided on the outside of the both ends of static pressure oil clearance, also set in the two sides of oil leak hole
Set hydrostatic seal part.It realizes to the reliable hydrostatic support of piston rod, is allowed to be formed between hydrostatic support set and piston rod steady
Fixed bearing oil film has the advantages that frictional resistance and friction power loss are small.
A kind of preferred embodiment of the utility model, hammer core guide part lower end are equipped with movable replace and beat piston.
Hammer core guide part lower end is fixedly installed with piston sleeve, is movably set in piston sleeve for piston is beaten, for piston is beaten
Lower end surface is arcwall face, is connected in piston sleeve for piston is beaten by piston shackle member activity.The structure energy effective protection stake
Head avoids destruction of the hammer huge drop impact power of core to foundation pile head that from capable of effectively mitigating for the arcwall face for beating piston lower surface
Hammer core is beaten partially foundation pile, is more uniformly stressed foundation pile, is driven piles high-efficient.
Detailed description of the invention
The utility model differential type hydraulic pile hammer is made further specifically with reference to the accompanying drawings and detailed description
It is bright.
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the utility model differential type hydraulic pile hammer；
Fig. 2 is the schematic diagram of the section structure of hydraulic cylinder in Fig. 1 illustrated embodiment；
Fig. 3 is I partial structurtes enlarged diagram in structure shown in Fig. 2；
Fig. 4 is hammer core attachment structure schematic diagram in Fig. 1 illustrated embodiment；
Fig. 5 is II partial structurtes enlarged diagram of structure shown in Fig. 4；
Fig. 6 is the shaft coupling of structure shown in Fig. 4 and the attachment structure schematic diagram of hammer core connecting rod；
Fig. 7 is the structural schematic diagram for hammering core connecting rod in structure shown in Fig. 4 into shape.
In figure, 1-is mentioned under hammer cylinder, 2-integrated main valve blocks, 3-upper support flanges, 4-accumulators, 5-supporting elements, 6-
Support flange, 7-connection sleeves, 8-sleeve connection flanges, 9-shaft couplings, 10-hammer core connecting rods, 11-butterfly spring glands,
12-upper butterfly springs, 13-butterfly spring mounting bases, 14-lower butterfly springs, 15-butterfly spring pedestals, 16-hammer core guide parts, 17-hammer cores,
18-guide part connecting flanges, 19-for beat piston, 20-piston sleeves, 21-piston shackle members, 22-cylinder body oil inlets,
23-cylinder body oil return openings, 24-cylinder bottoms, 25-cylinder blocks, 26-inner cylinder liners, 27-oil inlet passages, 28-outer cylinder sheaths, 29-into
Oilhole, 30-cylinder caps, 31-hydrostatic support sets, 32-oil leak holes, 33-static pressure fuel feed holes, 34-static pressure oil return holes, 35-are lived
Stopper rod, 36-pistons, 37-hinged gaskets, 38-hinged spacers, 39-hinged washers, 40-hinged glands, 41-connecting rod balls
Head, 42-connecting rod convex shoulders, 43-static pressure oil clearances, 44-hydrostatic seal parts.
Specific embodiment
Differential type hydraulic pile hammer (hammer core is in pile driving position) as shown in Figure 1, the hammer core 17 of the hydraulic pile hammer is
One cylindrical 50 tons of the alloy steel casting of weighing, which hammers 1.5 meters of outer diameter of core into shape, 5.1 meters high；Hammer core guide part 16 is adopted
With cartridge type guide frame, i.e. hammer core guide part 16 is in steel cylindrical tube shape structure, and hammer core 17 can hammer core guide part axis into shape along tubular
Heart line is up and down reciprocatingly slidably disposed in the bobbin of hammer core guide part 16.Pass through guiding in the lower end of the hammer core guide part 16 of tubular
Part connecting flange 18 is fixedly connected with piston sleeve 20, which equally uses cylinder tubular structure, in piston sleeve 20
Interior activity is placed with to beat piston 19, and when strike should replace and beat for the upper top surface for beating piston 19 directly by the strike of dropping hammer for hammering core 17 into shape
The bottom surface of piston 19 is then arcwall face, is supported in the stake top of foundation pile for piston 19 is beaten by arcwall face；Hammer core 17 drops hammer
Hitting power, which passes through, passes to foundation pile for beating piston 19, breaks so that effective protection pile crown is not wounded.For the waist for beating piston 19
Using waisting structure, piston shackle member 21 is clamped ring structure using dissection type, and the clamping ring active card of piston shackle member 21 inserts in
For the contracting waist location for beating piston 19, which is fixedly installed on piston sleeve 20, and this structure to beat
Piston 19 can move in piston sleeve 20 along axial in limited travel, and will not fall off and separate with piston sleeve 20.
The cylinder cap 30 of the hydraulic cylinder lower end of pile hammer is fixedly connected and is supported on lower support flange 6, and hydraulic cylinder upper end is logical
It crosses cylinder bottom 24 and cylinder block 25 is fixedly attached on support flange 3；Upper support flange 3 and lower support flange 6 pass through supporting element 5
It is mutually permanently connected, to constitute a stable frame structure, hydraulic cylinder is located at the center of the rigid frame.In hydraulic cylinder
Lateral surface is further sleeved with hydraulic cylinder sheath, which is fixedly installed between support flange 3 and lower support flange 6,
Hydraulic cylinder sheath not only effective protection hydraulic cylinder, but also enhance the supporting structure stability of hydraulic cylinder.In hydraulic cylinder sheath
Periphery be also fixedly installed with accumulator 4, the high pressure accumulator of the accumulator 4 including hydraulic control system and oil-return accumulator etc.
Accumulator, this structure make accumulator closer to hydraulic cylinder, are convenient for accumulator fast reaction and Absorbing Fluctuation at work.
Lower support flange 6 is fixedly installed in the hammer core guiding for being cylindrical in shape structure by connection sleeve 7 and sleeve connection flange 9
The upper end of part 16, this structure are conducive to the installation and maintenance of hydraulic cylinder.It is fixedly connected on upper support flange 3 and mentions hammer cylinder 1,
It is provided with integrated main valve block 2 mentioning in hammer cylinder 1, which can reduce the connected pipes of hydraulic system and oil circuit is let out
Leak source.Hammer lifting lug is mentioned in the top setting for mentioning hammer cylinder 1, to lift by crane entire piling.
As shown in Fig. 2, hydraulic cylinder includes the inner cylinder liner 26 and outer cylinder sheath 28 of mutual concentric spacing suit, in 26 He of inner cylinder liner
Oil inlet passage 27 is formd between the gap of outer cylinder sheath 28.The upper end of inner cylinder liner 26 and outer cylinder sheath 28 is fixedly welded with cylinder block
25, it is fixedly connected with cylinder bottom 24 on cylinder block 25, cylinder body oil inlet 22 and cylinder body oil return opening 23 are provided on cylinder bottom 24.Inside
Piston 36 is movably set in cylinder sleeve 26, the lower end of the piston 36 is fixed with piston rod 35, the cylinder body oil inlet 22 on cylinder bottom 24
It is connected through the correspondence runner on cylinder block 25 with the oil inlet passage 27 between inner cylinder liner 26 and outer cylinder sheath 28, the oil inlet passage 27
Fuel feed hole 29 through 26 lower end position of inner cylinder liner is connected to the rod chamber of inner cylinder liner 26；Cylinder body oil return opening 23 on cylinder bottom 24 with it is hydraulic
The rodless cavity of cylinder is connected.The lower end of inner cylinder liner 26 and outer cylinder sheath 28 is fixedly connected on connection spacer, inner cylinder liner 3 and outer cylinder sheath
4 lower ends are fixedly connected by connecting spacer with cylinder cap 30.Hydrostatic support set 31, piston rod 35 are also fixedly installed on cylinder cap 30
It is supported on hydrostatic support set 31 across cylinder cap 30 and hydrostatic support set 31.
As shown in figure 3, the static pressure oil return hole 34 of static pressure fuel feed hole 33 is provided on hydrostatic support set 31, in hydrostatic support
Static pressure oil clearance 43 is formed between set 31 and piston rod 35, is provided with hydrostatic seal part 44 on the outside of the both ends of static pressure oil clearance 43, it is quiet
It is pressed into oilhole 33 and static pressure oil return hole 34 is connected with static pressure oil clearance 43, static pressure oil return hole 34 is located at the upper of static pressure fuel feed hole 33
Side.It is additionally provided with oil leak hole 32 on hydrostatic support set 31, the two sides of the oil leak hole 32 are also equipped with hydrostatic seal part 44, oil leak hole
32 are located at the lower section of static pressure fuel feed hole 33, and oil leak hole 32 is used to guide Leakage Energy into fuel tank, to avoid the influence to construction environment.
For hydrostatic seal part 44 in the seal groove of hydrostatic support set 31, which uses common rubber seal.
As shown in figure 4, the overhanging lower end of piston rod 35 of hydraulic cylinder is mutually permanently connected with shaft coupling 9 by screw thread, piston
Bar 35 is connected to the upper end of shaft coupling 9.The lower end of shaft coupling 9 and the hammer core connecting rod 10 mutually company of strand, hammer into shape under core connecting rod 10
End is fixedly connected on hammer core 17 by butterfly spring structure, which includes upper butterfly spring 12 and lower butterfly spring 14.
As shown in Figure 5, Figure 7, hammer core connecting rod 10 is equipped with connecting rod convex shoulder 42, distinguishes in the two sides up and down of connecting rod convex shoulder 42
It is set with butterfly spring 12 and lower butterfly spring 14, upper butterfly spring 12 and lower butterfly spring 14 are formed by multi-disc butterfly spring piece is stacked.Upper 12 He of butterfly spring
Lower butterfly spring 14 is installed in butterfly spring mounting hole corresponding to hammer core 17 further through butterfly spring mounting base 13, is bolted to butterfly spring
Upper butterfly spring 12 and lower butterfly spring 14 are pressed in the butterfly spring mounting hole of hammer core 17 by the butterfly spring gland 11 in mounting hole aperture, lower butterfly spring 12
It is supported on butterfly spring pedestal 15, butterfly spring pedestal 15 is installed on the bottom hole of the butterfly spring mounting hole on hammer core 17.
As shown in Figure 6, Figure 7, the top of core connecting rod 10 is hammered into shape for connection rod sphere 41, at the upper lower support surface of connection rod sphere 41
In on same Surface of Sphere, the upper supporting spherical of connection rod sphere 41 is supported on hinged gasket 37, the lower support ball of connection rod sphere 41
It is cased with hinged washer 39 on face, hinged spacer 38, hinged 39 He of washer are provided between hinged gasket 37 and hinged washer 39
Hinged gasket 37 is pressed in the hinge mounting hole of 9 lower end of shaft coupling by hinged gland 40, is located at hinged 40 center of gland
The tie rod holes aperture of position is greater than the bar diameter of hammer core connecting rod 10, and hinged gland 40 is rotatably connected in the hinge of shaft coupling 9 by screw thread
The orifice position of mounting hole.
When cylinder body oil inlet 22 is connected with cylinder body oil return opening 23 by hydraulic valve, hydraulic cylinder forms differential connection, liquid
The hydraulic oil of press pump pushes piston fast downlink.It is hydraulic when cylinder body oil inlet 22 and cylinder body oil return opening 23 are in an off state
After the hydraulic oil of pump is directly entered cylinder body oil inlet 22, then enter through oil inlet passage 27 and fuel feed hole 29 rod chamber of hydraulic cylinder
Middle 36 uplink of promotion piston, and realize and mention hammer, the pressure oil in hydraulic cylinder rodless cavity is through cylinder body oil return opening 23 and fuel tank phase at this time
Reflux is even realized, to realize quick oil feeding and quick oil return.
A kind of above-mentioned specific embodiment for having enumerated the utility model, but the utility model is not limited to this, and is not being disobeyed
Modifications and variations there are many more under the premise of back the utility model basic principle.Core guide part is such as hammered into shape to remove using core structure
Outside, it can also be the common pile hammer guide frame such as guide rod type；The hammer core guide part of cartridge type not only can be cylindrical shape, may be used also
To be the cylinders tubular structure such as square tubular.It can be both set with hydraulic cylinder sheath in hydraulic cylinder peripheral side, hydraulic cylinder can not also be set with
Sheath.Fixed bearing method of the hydraulic cylinder above hammer core guide part, is more not limited to the structure of the present embodiment, supporting element is same
Sample can use core structure.Hydrostatic support set is also possible in cylinder cap either be fixedly connected on cylinder cap.This
A little transformation and improvement are each fallen in the protection scope of the utility model.
Claims (10)
1. a kind of differential type hydraulic pile hammer, including hydraulic cylinder and hammer core (17), hammer core (17) are slidably supported in hammer core guide part
(16) on, hydraulic cylinder is fixedly connected with hammer core guide part (16), and the piston rod (35) of hydraulic cylinder is connected with hammer core (17), special
Sign is: the hydraulic cylinder includes the inner cylinder liner (26) and outer cylinder sheath (28) for being spaced apart from each other suit, inner cylinder liner (26) and outer cylinder sheath
(28) both ends are fixedly installed cylinder bottom (24) and cylinder cap (30) respectively, formed between inner cylinder liner (26) and outer cylinder sheath (28) into
Oily channel (27)；Piston (36) are movably set in the inner cylinder liner (26), the piston rod (35) being fixedly connected with piston (36)
It passes axially through cylinder cap (30) and hydrostatic support set (31) and is supported on hydrostatic support set (31), hydrostatic support set (31) is fixed
It is installed on cylinder cap (30), static pressure fuel feed hole (33) and static pressure oil return hole (34) is provided on hydrostatic support set (31)；In cylinder
Cylinder body oil inlet (22) and cylinder body oil return opening (23) are provided on bottom (24), cylinder body oil inlet (22) is connected with oil inlet passage (27)
Logical, which leads to the rod chamber of hydraulic cylinder, cylinder body oil return opening further through the fuel feed hole (29) on inner cylinder liner (26)
(23) it is connected to the rodless cavity of hydraulic cylinder.
2. differential type hydraulic pile hammer according to claim 1, it is characterised in that: the hammer core guide part (16) uses cylinder
Formula guide frame, hammer core (17) are slideably positioned in the guide cylinder.
3. differential type hydraulic pile hammer according to claim 1 or 2, it is characterised in that: the lower end of the hydraulic cylinder passes through
Cylinder cap (30) is supported on lower support flange (6), and the upper end of hydraulic cylinder is supported on support flange (3), upper support flange (3)
It is mutually permanently connected with lower support flange (6) by supporting element (5)；Lower support flange (6) is fixedly mounted by connection sleeve (7)
In the upper end of hammer core guide part (16).
4. differential type hydraulic pile hammer according to claim 1, it is characterised in that: the overhanging end of the piston rod (35) is solid
Surely shaft coupling (9) are connected with, one end of the shaft coupling (9) is hinged with hammer core connecting rod (10), the other end of the hammer core connecting rod (10)
It is connected by butterfly spring with hammer core (17).
5. differential type hydraulic pile hammer according to claim 4, it is characterised in that: the butterfly spring include upper butterfly spring (12) and
Lower butterfly spring (14), hammer core connecting rod (10) is equipped with connecting rod convex shoulder (42), in connecting rod convex shoulder (42), two sides are separately installed with up and down
Butterfly spring (12) and lower butterfly spring (14), butterfly spring (12) and lower butterfly spring (14) are pressed by butterfly spring gland (11) in hammer core (17) institute on this
In corresponding butterfly spring mounting hole.
6. differential type hydraulic pile hammer according to claim 4 or 5, it is characterised in that: the upper butterfly spring (12) and lower butterfly
Spring (14) is installed in butterfly spring mounting hole corresponding to hammer core (17) by butterfly spring mounting base (13).
7. differential type hydraulic pile hammer according to claim 1, it is characterised in that: the hydrostatic support set (31) is flush-mounted in
On cylinder cap (30), static pressure oil clearance (43) are provided between hydrostatic support set (31) and piston rod (35)；Static pressure fuel feed hole (33)
It is connected to static pressure oil return hole (34) with static pressure oil clearance (43).
8. differential type hydraulic pile hammer according to claim 7, it is characterised in that: also set on the hydrostatic support set (31)
Oil leak hole (32) are equipped with, hydrostatic seal part (44) are provided on the outside of the both ends of static pressure oil clearance (43), in oil leak hole (32)
Two sides are also provided with hydrostatic seal part (44).
9. differential type hydraulic pile hammer according to claim 1, it is characterised in that: the hammer core guide part (16) lower end peace
Piston (19) are beaten equipped with movable replace.
10. differential type hydraulic pile hammer according to claim 9, it is characterised in that: hammer core guide part (16) lower end
Piston sleeve (20) are fixedly installed with, are movably set in piston sleeve (20) for piston (19) is beaten, for beating under piston (19)
End face is arcwall face, is connected in piston sleeve (20) for piston (19) is beaten by piston shackle member (21) activity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462975.XU CN208415251U (en) | 2018-03-30 | 2018-03-30 | Differential type hydraulic pile hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462975.XU CN208415251U (en) | 2018-03-30 | 2018-03-30 | Differential type hydraulic pile hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208415251U true CN208415251U (en) | 2019-01-22 |
Family
ID=65119152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820462975.XU Active CN208415251U (en) | 2018-03-30 | 2018-03-30 | Differential type hydraulic pile hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208415251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108239978A (en) * | 2018-03-30 | 2018-07-03 | 江苏巨威机械有限公司 | Differential type hydraulic pile hammer |
-
2018
- 2018-03-30 CN CN201820462975.XU patent/CN208415251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108239978A (en) * | 2018-03-30 | 2018-07-03 | 江苏巨威机械有限公司 | Differential type hydraulic pile hammer |
| CN108239978B (en) * | 2018-03-30 | 2023-11-17 | 江苏巨威机械有限公司 | Differential hydraulic pile hammer |
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