CN109458363A - Hydraulic pile hammer - Google Patents
Hydraulic pile hammer Download PDFInfo
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- CN109458363A CN109458363A CN201811553282.2A CN201811553282A CN109458363A CN 109458363 A CN109458363 A CN 109458363A CN 201811553282 A CN201811553282 A CN 201811553282A CN 109458363 A CN109458363 A CN 109458363A
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- 239000012530 fluid Substances 0.000 claims abstract description 51
- 241000282693 Cercopithecidae Species 0.000 claims abstract description 50
- 239000002828 fuel tank Substances 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 13
- 239000003921 oil Substances 0.000 description 41
- 230000009471 action Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
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- 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
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of hydraulic pile hammer, including upper beam, guide rod and lower beam, upper beam and lower beam are respectively fixedly connected in the both ends of guide rod, are also fixedly installed with middle cross beam on the guide rod between upper beam and lower beam, slidably supported on guide rod to have pile monkey；Hydraulic cylinder is supported between upper beam and middle cross beam, the piston rod extension end of hydraulic cylinder is connected with pile monkey, the oil outlet of hydraulic pump and to being connected to the lower cylinder chamber of the hydraulic cylinder and the P hydraulic fluid port of two position three way directional control valve, the oil return inlet T mouth of two position three way directional control valve is connected to fuel tank, and the A hydraulic fluid port of two position three way directional control valve leads to the upper cylinder half chamber of the hydraulic cylinder；The P hydraulic fluid port of control valve is connected to the oil outlet of hydraulic pump, and the T hydraulic fluid port of control valve is connected with fuel tank.The hydraulic cylinder is double acting hydraulic cylinder with double piston rods or two-action single-rod hydraulic cylinder；Two position three way directional control valve is hydraulic directional valve.The hydraulic pile hammer has structure simple, fast response time, is able to achieve the quick commutation for mentioning hammer and dropping hammer.
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 differential hydraulic
The guide rod type hydraulic pile hammer of system.
Background technique
Paddle type mill piling machine mainly has diesel hammer and hydraulic hammer.Diesel pile hammer is made an uproar since its own structure is insurmountable
The problems such as sound, vibration and fume pollution and be gradually prohibited from using；Also due to the long-pending limitation with efficiency of diesel pile hammer thermal capacitance, reason
It also can only achieve 15 tons by the jump bit core quality for above saying maximum diesel hammer, be not able to satisfy the construction requirement of large scale prefabricated stake.
Hydraulic pile hammer then have the characteristics that piling is high-efficient, noise low vibration is small, without fume pollution, advance is recognized extensively
Can, it is imperative with hydraulic pile hammer diesel oil substitute pile hammer, the Japan in western developed country and Asia, South Korea, Hong Kong and
The countries and regions such as Singapore, hydraulic pile hammer completely instead of diesel pile hammer, become the absolutely main force in piling market.
But for existing hydraulic pile hammer since the through-current capacity of hydraulic control circuit is small, the pressure loss is big, and oil rub resistance ability is weak, sensitive
Not high, the deficiencies of that there are impact velocitys is low, response speed is slow, the single hammer action time is long and poor structure rigidity is spent, these
The hydraulic pile hammer of structure inevitably forms back with the raising of blow speed and blow energy in hydraulic cylinder oil pocket
Pressure, blow energy and speed are restricted, and are equally difficult to meet the hundreds of kilojoules of large-scale foundation pile even the strike energy of thousands of kilojoules
Amount requires.
In order to improve the blow energy of hydraulic peening hammer and the through-current capacity and response speed of hydraulic control circuit, the applicant
The application for a patent for invention of " the guide rod type pile hammer with hydraulic cartridge valve ", patent application are proposed on October 24th, 2017
Number: 201711003379.1.Pile monkey in the patent application is slidably supported on pile monkey guide rod, and hydraulic cylinder is then for promoting stake
The power source of hammer is implemented to hit the pile sinking of foundation pile by the movement of falling object of pile monkey.The hydraulic pile hammer hydraulic control is returned
Road then includes pilot control valve and two inserted valves, and work structuring and working principle constitute single-acting hydraulic impact piling
Hammer, pile monkey hammer core hit pile body in a manner of freely falling body；The pressure oil of hydraulic pump is oily under the control of pilot control valve when mentioning hammer
Liquid is through the first inserted valve and the second inserted valve with certain pressure value is filled into the cavity of resorption of hydraulic cylinder and realizes and mentions hammer.Due to mentioning
The second inserted valve is first closed when hammer and opens the first inserted valve again, and it is dynamic that the sequentially linkage of two inserted valves will form more spool
Make the time, its working chamber and the oil pressure of control chamber two sides are almost equal when especially the second inserted valve is closed, and insert valve core
The mobile reset spring only relied in valve realizes, the flowed friction of system and limited spring force, so that the inserting valve core
Slow movement, opening and closing time is longer.Hydraulic pump will carry out pressurising to entire control loop and mention hammer to set up when mentioning hammer in addition
Oil pressure can postpone the practical opening and closing time of inserted valve again, when this, which proposes hammer process, can consume more work.When dropping hammer then
The first inserted valve is first closed, then opens the second inserted valve.It will form longer inserted valve in each strike for mentioning hammer, dropping hammer
The switching motion time, so that the slow striking frequency of response speed of entire hydraulic system is low.Therefore this single-acting guide rod type piling
Although hammer has guiding performance good, blow energy can be improved by increasing pile monkey weight, its hydraulic control circuit is by elder generation
The control valve group that pilot valve and multiple main valves are constituted, needs the linkage of multiple main valves to switch, not only increases oil circuit when being commutated
Complexity, the reliability of transmission system is reduced, and multistage switching increases the time of commutation action, so that response speed
It is slack-off, the operating time in each strike period, it is difficult to realize that high-frequency is driven piles, influence the raising of pile foundation construction efficiency.
Based on above-mentioned deficiency, the applicant proposes the hair of " the big energy hydraulic pile hammer of high frequency " on March 30th, 2018 again
Bright patent application, number of patent application: 201810291946.6.Hydraulic cylinder in the patent application covers cylinder knot using differential type
Structure, to constitute double-action hydraulic pile hammer, but it includes that there are two inserted valves that its hydraulic control circuit, which is equally main,.Mention hammer
When the second inserted valve close, the first inserted valve is opened, and the pressure oil of hydraulic pump is directly filled with the straight-bar chamber of hydraulic cylinder；When strike
Two inserted valves are opened, and the first inserted valve is closed, and hydraulic cylinder constitutes differential connection circuit at this time, and this structure, which is conducive to improve, beats
Hit frequency and blow speed, but hydraulic control circuit is there are still multiple inserted valves sequentially open-shut linkage, each action cycle when
Length is still longer, is still difficult to realize the substantially speed-raising of striking frequency, limits hydraulic pile hammer Xiang Genggao striking frequency and more
The development of height strike energy position.
Summary of the invention
Deficiency present in scheme in view of the above technology, technical problem to be solved by the invention is to provide one kind to have knot
Structure is simple, fast response time, is able to achieve the hydraulic pile hammer for quickly proposing hammer and commutation of dropping hammer.
In order to solve the above-mentioned technical problem, hydraulic pile hammer of the invention, including upper beam, guide rod and lower beam, upper cross
Beam and lower beam are respectively fixedly connected in the both ends of guide rod, are also fixedly installed on the guide rod between upper beam and lower beam
Crossbeam, it is slidably supported on guide rod to have pile monkey；Hydraulic cylinder, the piston rod of hydraulic cylinder are supported between the upper beam and middle cross beam
Extension end is connected with pile monkey, the oil outlet of hydraulic pump and to the lower cylinder chamber and two position three way directional control valve for being connected to the hydraulic cylinder
P hydraulic fluid port, the oil return inlet T mouth of two position three way directional control valve is connected to fuel tank, and the A hydraulic fluid port of two position three way directional control valve leads to the hydraulic cylinder
Upper cylinder half chamber；The P hydraulic fluid port of control valve is connected to the oil outlet of hydraulic pump, and the T hydraulic fluid port of control valve is connected with fuel tank, control valve
A hydraulic fluid port is connected with two position three way directional control valve one end control chamber, the other end control of the B hydraulic fluid port and two position three way directional control valve of control valve
Chamber processed is connected.
In said structure, due to hydraulic to control using single two position three way directional control valve in hydraulic directio control loop
The commutation of cylinder shortens the port valve path of hydraulic oil, simplifies control loop structure, increases circuit reliability, save liquid
The time-consuming of each action process in pressure system reduces the commutation response time of hydraulic system, is advantageously implemented the fast of pile hammer
Speed mentions hammer and quickly drops hammer strike, avoids and postpones response time of hydraulic system, to make to change because more inserted valves sequentially act
It becomes faster to movement response, effectively improves the response speed of pile monkey hydraulic system；It simultaneously can using two position three way directional control valve
The commutation displacement of two position three way directional control valve spool is directly driven by the hydraulic oil of system, spool displacement thrust is powerful, spool
Shift reliable, fast response time rapidly；It is also avoided using two position three way directional control valve and is brought due to more inserted valves sequentially act
Malfunction, realize the accurate of reversal valve control action, therefore not only substantially increase using two position three way directional control valve hydraulic
The response speed of system element and the striking frequency of pile monkey, and the structure of hydraulic system is enormously simplified, reduce hydraulic pressure system
Valve number in system, reduces operation troubles.Again due to being convenient for constituting differential hydraulic system using two position three way directional control valve, in pile monkey
When mentioning hammer, high pressure oil caused by hydraulic pump enters directly into the cavity of resorption of hydraulic cylinder, and hydraulic cylinder epicoele oil return is passed straight back to again
In fuel tank, oil inlet and oil return smooth channel, actuation time shorten, fast response time；When pile monkey drops hammer and drives piles, under hydraulic cylinder
Cylinder chamber and upper cylinder half chamber are interconnected to form differential connection by two position three way directional control valve, and the flow of upper cylinder half chamber is except hydraulic pump
Outside fuel feeding, there are also the oil return that lower cylinder chamber fills into, the oil liquid of the fuel feeding of hydraulic pump and lower cylinder chamber, which merges together, flows to upper cylinder half chamber, flows
Amount increase so that piston driving piston rod rapid decrease and drop hammer.It is downward to be formed by hydraulic cylinder upper cylinder half chamber for differential connection simultaneously
Hydraulic thrust and pile monkey gravity form resultant force, keep the hitting power of pile monkey hammer core bigger, not only blow energy becomes larger, and moves back and forth speed
Degree is fast, also improves the striking frequency of pile monkey.Due also to the guide part to be pumped using guide rod as pile monkey, is not only led
More stable to effect, pile monkey movement flexibly, and uses convenient for production processing and maintenance；What guide rod and upper and lower crossbeam were constituted
Pile monkey supporting structure also has higher stiffness and strength, is conducive to bear bigger blow energy and higher striking frequency.
The preferred embodiment of the present invention, the two position three way directional control valve are hydraulic directional valve, and the control valve is two
Four-way electromagnetic reversing valve；The hydraulic cylinder is double acting hydraulic cylinder with double piston rods or two-action single-rod hydraulic cylinder.The structure
Not only commutation is reliable rapid, but also has bigger blow energy, and different hydraulic systems can be selected according to actual condition
Flow.
The preferred embodiment of the present invention, the hydraulic cylinder upper end are connected with integrated valve block, and the A hydraulic fluid port of the integrated valve block is logical
To the lower cylinder chamber of hydraulic cylinder, the B hydraulic fluid port of integrated valve block leads to the upper cylinder half chamber of hydraulic cylinder.It is not only improved and is subtracted using integrated valve block structure
Few hydraulic leak point and failure rate, but also hydraulic oil pipe system becomes more succinct.
The preferred embodiment of the present invention, the oil outlet of the hydraulic pump are connected to the A hydraulic fluid port of inserted valve, the B of inserted valve
Hydraulic fluid port and to the P hydraulic fluid port for the oil outlet and two position three way directional control valve for being connected to hydraulic pump, the P hydraulic fluid port of inserted valve and hydraulic cylinder it is upper
The connection of cylinder chamber.The inserted valve control chamber of the inserted valve is connected with inserted valve working chamber；The P hydraulic fluid port of inserted valve is through integrated valve block
It is connected to the upper cylinder half chamber of hydraulic cylinder.The structure can effectively slow down the huge strike effect of pile monkey strike moment to hydraulic system
Impact, is effectively protected hydraulic system and hydraulic component.
The preferred embodiment of the present invention, the oil outlet of the hydraulic pump are communicated with high pressure accumulator, the two-position three way
The oil return inlet T mouth of reversal valve is communicated with oil-return accumulator.Can not only steady hydraulic system oil pressure, absorb high-pressure pulsating, Er Qie
It drops hammer and increases blow energy to hydraulic cylinder when hitting.
The preferred embodiment of the present invention, the oil outlet of the hydraulic pump is also communicated with bypass accumulator and overflow valve, other
Road accumulator is between hydraulic pump and overflow valve.Be conducive to steady hydraulic system oil pressure, guarantee the normal work of hydraulic system.
The preferred embodiment of the present invention, the guide rod at least two, the bar center line of each guide rod is parallel to each other.Guiding
Reliably, stable structure.
The preferred embodiment of the present invention is connected with piston sleeve on the lower beam, activity setting in the piston sleeve
Have for piston is beaten.Direct hammering of the pile monkey to foundation pile head is avoided, also can effectively disperse the percussion for balancing pile monkey, make stake
Hammering blow power becomes uniformly, and foundation pile can more bear huge hammer action and judder.
The extension end of the preferred embodiment of the present invention, the piston rod is mutually hinged with pile monkey.Effectively avoid strenuous vibration
Lower pile monkey center line is inconsistent with hydraulic cylinder center line, and generates to eccentric wear caused by hydraulic cylinder and twist and warping, improves liquid
Cylinder pressure bending bearing capacity and shearing strength.
Detailed description of the invention
Hydraulic pile hammer of the present invention is described further with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of structural schematic diagram of specific embodiment of hydraulic pile hammer of the present invention；
In figure, 1-hydraulic pump, 2-check-valves, 3-bypass accumulators, 4-overflow valves, 5-inserted valve working chambers, 6-insertings
Valve control chamber, 7-inserted valves, 8-two position three way directional control valves, 9-high pressure accumulators, 10-oil-return accumulators, 11-control valves,
12-fuel tanks, 13-upper beams, 14-integrated valve blocks, 15-hydraulic cylinder upper end covers, 16-hydraulic cylinder bodies, 17-guide rods,
18-hydraulic cylinder lower covers, 19-middle cross beams, 20-piston rods, 21-pile monkey attachment bases, 22-pile monkeys, 23-lower beams,
24-for beat pad, 25-piston sleeves, 26-replace beat piston.
Specific embodiment
Hydraulic pile hammer as shown in Figure 1 including pile monkey part and is attached thereto logical hydraulic control circuit.
The pile monkey part of hydraulic pile hammer includes two guide rods being parallel to each other 17, and two guide rods 17 are all made of outer diameter phase
Same cylinder hollow steel pipe, tubular type guide rod rigidity with higher and mechanical strength.It is fixedly connected in the upper end of two guide rods
Upper beam 13 is fixedly connected with lower beam 23 in the lower end of two guide rods；Two guide rods 17 and upper beam 13 and 23 structure of lower beam
At stable frame frame structure.It is also fixedly installed with middle cross beam 19 on two guide rods, which is located at upper beam 13
Between lower beam 23.It is slidably supported on two guide rods 17 to have a pile monkey 22, pile monkey 22 be located at middle cross beam 19 and lower beam 23 it
Between, pile monkey 22 is the strike weight for counting and picking up ton that weighs；It is set on the hammer body of the pile monkey 22 there are two slide-and-guide hole, is slided at two
Sliding bearing bush is embedded in pilot hole, pile monkey 22 is slidably supported on guide rod 17 by sliding bearing bush.In middle cross beam 19 and upper cross
Fixed bearing has hydraulic cylinder between beam 13, which uses the hydraulic cylinder of double acting double piston-rod structure, is located at piston two sides
Piston rod be each passed through the cylinder cap of corresponding end and protruding.The cylinder body of hydraulic cylinder is using set cylinder structure, the inner cylinder liner of cylinder body
Oil inlet passage is formed between outer cylinder sheath.The upper end of hydraulic cylinder is fixedly attached on upper beam 13 by the upper end cover of hydraulic cylinder,
Integrated valve block 14 is also fixedly connected on the upper end cover of hydraulic cylinder, the A hydraulic fluid port on integrated valve block 14 leads to the lower cylinder of hydraulic cylinder
The B hydraulic fluid port of chamber, integrated valve block 14 then leads to the upper cylinder half chamber of hydraulic cylinder.The lower end of hydraulic cylinder passes through hydraulic cylinder lower cover fixed bearing
In on middle cross beam 19.The extension end of piston rod 20 on the downside of hydraulic cylinder piston is hinged with 22 phase of pile monkey, which stretches
Outlet is connected on pile monkey attachment base 21 by its bulb end, and pile monkey attachment base 21 is then fixedly installed on pile monkey 22.In lower cross
Be fixedly connected with piston cylinder 25 on the downside of beam 23, be movably set in piston sleeve 25 for beating piston 26, for beat piston 26 and
It is lined between pile monkey 22 for pad 24 is played.
The hydraulic control circuit part of hydraulic pile hammer includes hydraulic pump 1, and hydraulic pump uses Variable plunger pump, in order to
Adjust flow system flow and pressure.The inlet port of hydraulic pump 1 is connected to fuel tank 12, and the oil outlet of hydraulic pump 1 is through check-valves 2 and to connection
To the lower cylinder chamber of hydraulic cylinder and the P hydraulic fluid port of two position three way directional control valve 18.1 oil outlet of hydraulic pump be connected to through check-valves 2 it is integrated
The A hydraulic fluid port of valve block 14, the A hydraulic fluid port on integrated valve block 14 are connected to hydraulic cylinder through the oil inlet passage between the inside and outside cylinder sleeve of hydraulic cylinder again
Lower cylinder chamber.The oil return inlet T mouth of two position three way directional control valve 8 is connected to fuel tank 12, and the A hydraulic fluid port of the two position three way directional control valve 8 is through integrated
Valve block 14 and B hydraulic fluid port thereon lead to the upper cylinder half chamber of hydraulic cylinder.The P hydraulic fluid port of control valve 11 is connected to the oil outlet of hydraulic pump 1, control
The T hydraulic fluid port of valve 11 processed is connected with fuel tank 12, and the A hydraulic fluid port of control valve 11 is connected with one end control chamber of two position three way directional control valve 8
Logical, the B hydraulic fluid port of control valve 11 is connected with the other end control chamber of two position three-way valve 8, with the hydraulic oil by hydraulic system come
The spool of driving and control two position three way directional control valve between a position secondly slide.
It is also communicated with bypass accumulator 3 and overflow valve 4 in the oil outlet of hydraulic pump 1, bypass accumulator 3 is located at hydraulic pump 1
Between overflow valve 4.Inserted valve 7, the A of the oil outlet of hydraulic pump 1 and the inserted valve 7 are also communicated in the oil outlet of hydraulic pump 1
Hydraulic fluid port is connected, the B hydraulic fluid port of inserted valve 7 and to the P hydraulic fluid port for the oil outlet and two position three way directional control valve 8 for being connected to hydraulic pump 1, inserts
The P hydraulic fluid port of dress valve 7 is connected with the upper cylinder half chamber of hydraulic cylinder, and 7 inserted valve control chamber 6 of inserted valve is connected with inserted valve working chamber 5,
The P hydraulic fluid port of inserted valve 7 is connected through integrated valve block 14 with the upper cylinder half chamber of hydraulic cylinder.When pile monkey and foundation pile severe impact when piling
When, the upper cylinder half chamber oil pressure moment of hydraulic cylinder 2 increases and pushes open the spool of inserted valve 7, makes lower cylinder chamber phase of the upper cylinder half chamber with hydraulic cylinder
It is connected to and plays buffer protection function.Hydraulic pump 1 oil outlet also and to being communicated with high pressure accumulator 9, which presses accumulator 9
Steady high-pressure oil passage pulsation and the blow energy of pile monkey can be improved, also connected in the oil return inlet T mouth of two position three way directional control valve 8
It is connected with oil-return accumulator 10.Above-mentioned accumulator 10 is all made of bag type accumulator.
When work starts, pile monkey is in initial state, starts hydraulic pump 1 first and is gradually raised to oil pressure in hydraulic system
After certain value, 11 spool of control valve is moved to and mentions hammer position, the pressure oil pumped out at this time from 1 oil outlet of hydraulic pump is through integrated valve block
After 14 A hydraulic fluid port enters the oil duct of integrated valve block 14, then hydraulic cylinder is filled by the oil inlet passage that inside and outside cylinder sleeve is constituted
Lower cylinder chamber, the oil liquid of hydraulic cylinder upper cylinder half chamber then passes through integrated valve block 14 and B hydraulic fluid port thereon is connected to the A of two position three way directional control valve 8
Hydraulic fluid port is back to fuel tank using the T hydraulic fluid port being connected to A hydraulic fluid port, at this time pile monkey 22 under the action of hydraulic cylinder by lifting,
When pile monkey reaches highest setting position, 11 spool of control valve moves to position of dropping hammer (position shown in Fig. 1), at this time the upper cylinder half of hydraulic cylinder
Chamber is connected to the differential hydraulic system that constitutes through two position three way directional control valve 8 with lower cylinder chamber, down thrust of the pile monkey 22 in hydraulic cylinder
It drops hammer strike with being realized under the double action of self gravity.The strike impact force of pile monkey 22 passes through to play pad 24 and pass for piston 26 is beaten
It passs foundation pile and realizes pile sinking.After strike is implemented in 22 pairs of stakes of pile monkey, control valve 11, which then moves to, mentions hammer position, what hydraulic pump 1 pumped out
Pressure oil is pumped into cylinder chamber under hydraulic cylinder again, to push hydraulic cylinder piston and piston rod to drive 22 upward sliding of pile monkey, under
Strike of once dropping hammer is prepared.It so repeats, the sliding valve core of control valve 11 is constantly moved back and forth two operating positions, and real
Existing pile monkey proposes hammer or piling of dropping hammer.
Control valve 11 is two-position four-way solenoid directional control valve, and two position three way directional control valve 8 is then the two position three way directional control valve that surges.
It is above-mentioned to have enumerated some preferred embodiments of the invention, but the present invention is not limited to the above embodiments, not
Modifications and variations there are many more violating in the case where general principles.As hydraulic cylinder both can be double acting double piston-rod liquid
Cylinder pressure is also possible to two-action single-rod hydraulic cylinder.Guide rod can both use overall structure, be also possible to by two sections or two sections
The split type structure being formed by connecting with upper rod section.The buffer structure that inserted valve 7 is constituted, can also use other common hydraulic pressure systems
System buffer structure；Hydraulic pump is also possible to constant displacement pump either variable pump.Etc..These transformation and improvement each fall within this hair
In bright protection scope.
Claims (10)
1. a kind of hydraulic pile hammer, including upper beam (13), guide rod (17) and lower beam (23), upper beam (13) and lower beam
(23) it is respectively fixedly connected in the both ends of guide rod (17), it is also solid on the guide rod (12) between upper beam (13) and lower beam (23)
Dingan County is equipped with middle cross beam (19), slidably supported on guide rod (17) to have pile monkey (22)；In the upper beam (13) and middle cross beam (19)
Between be supported with hydraulic cylinder, piston rod (20) extension end of hydraulic cylinder is connected with pile monkey (22), it is characterised in that: hydraulic pump
(1) oil outlet and to the P hydraulic fluid port for the lower cylinder chamber and two position three way directional control valve (8) for being connected to the hydraulic cylinder, two-position three way changes
It is connected to fuel tank (12) to the oil return inlet T mouth of valve (8), the A hydraulic fluid port of two position three way directional control valve (8) leads to the upper cylinder half of the hydraulic cylinder
Chamber；The P hydraulic fluid port of control valve (11) is connected to the oil outlet of hydraulic pump (1), and the T hydraulic fluid port of control valve (11) is connected with fuel tank (12)
Logical, the A hydraulic fluid port of control valve (11) is connected with two position three way directional control valve (8) one end control chamber, the B hydraulic fluid port and two of control valve (11)
The other end control chamber of position three-way diverter valve (8) is connected.
2. hydraulic pile hammer according to claim 1, it is characterised in that: the two position three way directional control valve (8) is to surge to change
To valve, the control valve (11) is two-position four-way solenoid directional control valve；The hydraulic cylinder is double acting hydraulic cylinder with double piston rods or double
Act on single-piston-rod hydraulic cylinder.
3. hydraulic pile hammer according to claim 1 or 2, it is characterised in that: the hydraulic cylinder upper end is connected with pile-up valve
Block (14), the A hydraulic fluid port of the integrated valve block (14) lead to the lower cylinder chamber of hydraulic cylinder, and the B hydraulic fluid port of integrated valve block (14) leads to hydraulic cylinder
Upper cylinder half chamber.
4. hydraulic pile hammer according to claim 1 or 2, it is characterised in that: the oil outlet of the hydraulic pump (1) and inserting
The A hydraulic fluid port of valve (7) is connected to, the B hydraulic fluid port of inserted valve (7) and to the oil outlet and two position three way directional control valve for being connected to hydraulic pump (1)
(8) P hydraulic fluid port, the P hydraulic fluid port of inserted valve (7) are connected to the upper cylinder half chamber of hydraulic cylinder.
5. hydraulic pile hammer according to claim 4, it is characterised in that: the inserted valve control chamber (6) of the inserted valve (7)
It is connected with inserted valve working chamber (5)；The P hydraulic fluid port of inserted valve (7) is connected to through integrated valve block (14) with the upper cylinder half chamber of hydraulic cylinder.
6. hydraulic pile hammer according to claim 1, it is characterised in that: the oil outlet of the hydraulic pump (1) is communicated with height
It presses accumulator (9), the oil return inlet T mouth of the two position three way directional control valve (8) is communicated with oil-return accumulator (10).
7. hydraulic pile hammer according to claim 1, it is characterised in that: the oil outlet of the hydraulic pump (1) is also communicated with
Accumulator (3) and overflow valve (4) are bypassed, bypass accumulator (3) is located between hydraulic pump (1) and overflow valve (4).
8. hydraulic pile hammer according to claim 1, it is characterised in that: the guide rod (17) at least two, each guide rod
(17) bar center line is parallel to each other.
9. hydraulic pile hammer according to claim 1, it is characterised in that: be connected with piston sleeve on the lower beam (23)
(25), it is movably set in the piston sleeve (25) for piston (26) are beaten.
10. hydraulic pile hammer according to claim 1, it is characterised in that: the extension end of the piston rod (20) and pile monkey
(22) it is mutually hinged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553282.2A CN109458363B (en) | 2018-12-19 | 2018-12-19 | Hydraulic pile driving hammer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553282.2A CN109458363B (en) | 2018-12-19 | 2018-12-19 | Hydraulic pile driving hammer |
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| CN109458363A true CN109458363A (en) | 2019-03-12 |
| CN109458363B CN109458363B (en) | 2024-02-09 |
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| CN201811553282.2A Active CN109458363B (en) | 2018-12-19 | 2018-12-19 | Hydraulic pile driving hammer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110005014A (en) * | 2019-05-07 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | It is a kind of can automatic frequency adjustment quartering hammer hydraulic system, control method and excavator |
| CN110286000A (en) * | 2019-07-16 | 2019-09-27 | 中国科学院海洋研究所 | A kind of fluid sample Suction filtration device and its application method based on ROV |
| CN113202095A (en) * | 2021-04-14 | 2021-08-03 | 中信重工机械股份有限公司 | Hydraulic pile hammer oil way, method for prolonging service life of pipeline part of hydraulic pile hammer and hydraulic pile hammer |
| CN114458663A (en) * | 2022-01-19 | 2022-05-10 | 上海海岳液压机电工程有限公司 | Energy control method based on hydraulic pile hammer |
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