CN102535465B - Hydraulic pneumatic composite pile hammer - Google Patents
Hydraulic pneumatic composite pile hammer Download PDFInfo
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- CN102535465B CN102535465B CN201010601616.6A CN201010601616A CN102535465B CN 102535465 B CN102535465 B CN 102535465B CN 201010601616 A CN201010601616 A CN 201010601616A CN 102535465 B CN102535465 B CN 102535465B
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Abstract
A kind of hydraulic pneumatic composite pile hammer, forms the pneumatic complex controll cylinder of Integral hydraulic by hydraulic cylinder, piston rod, piston, cylinder, is realized reciprocating motion and the hammering of pile hammer by hydraulic coupling, aerodynamic force, piston rod gravity.Integrated combination valve, high pressure accumulator, low pressure accumulator are adopted without pipeline and integrated form connected mode, is integrated in combination integrated valve block, realizes quick supply and the quick drain of large discharge.Cylinder adopts Compressed Gas as working media, and the gas compression in a work period inside cylinder, expansion respectively once, utilize the energy of gas to make hammer body accelerate to decline.By solenoid operated directional valve, large discharge control is carried out to cartridge valve group simultaneously.Low pressure accumulator by cartridge valve group, to hydraulic cylinder repairing and absorbing buffering.Adopt full-enclosed structure and piston rod guiding mechanism, realize playing raked pile and underwater operation.
Description
Technical field
The invention belongs to engineering machinery piling machinery and the mechanical parts and transmission device field of mechanical engineering and civil engineering, be specifically related to a kind of frame for movement and equipment of hydraulic pneumatic composite pile hammer.
Background technology
Stake rise can demand more than 7000 year before hominid utilize the river nurse building house based on timber to cross people's period at He Mudu.Since modern age, people have invented the various piling machinerys of piling.Piling machinery pile hammer conventional in construction foundation working has the various ways such as diesel pile hammer and hydraulic pile hammer.Traditional drop hammer type diesel pile hammer is because high energy consumption, noise are large, have the weak points such as pollution to start to be limited to use in many countries and regions.Hydraulic pile hammer technique functions comes from nineteen sixties.Hammer body is risen to certain height by the hydraulic coupling that hydraulic pile hammer utilizes hydraulic cylinder to produce, and hammer body accelerates under the superposition of Gravitative Loads or deadweight and hydraulic coupling etc., and the pile body of foundation pile is hit in hammering, utilizes the kinetic energy of hammer body by pile body injection soil layer.Hydraulic pile hammer is compared with traditional diesel pile hammer, and have obvious advantage, the also adjustable blow energies such as efficiency is high, noise is low, non-exhaust emission, wide accommodation, also may be used for underwater pile driving and batter piling.The units such as Shanghai Engineering Machinery Plant of China start the foreign technology such as Introduced from Japan develop hydraulic pile hammer successively from generation nineteen ninety, and existing model machine comes out.Because construction is limited, the reasons such as components and parts required precision is high, expensive, and operating efficiency is lower, the quantity dropping into batch production is at present also very limited.
Along with the building size of countries in the world construction foundation working constantly expands, the demand of pile hammer increases sharply, to the performance of piling machinery and the requirement of efficiency also more and more higher, the piling machinery product of high accuracy and high response is competitively being developed in manufactory commercial city.But existing diesel pile hammer and general hydraulic pile hammer all cannot meet the requirement of modern foundation construction.Modern foundation construction requires that piling machinery piling efficiency is high, noise is low, it is little to vibrate, without fume pollution, environmental friendliness.How to develop a kind of reliable, accurate, eco-friendly hydraulic pneumatic composite pile hammer, particularly propose the hydraulic pneumatic composite pile hammer foundation pile of building work mechanized equipment of a kind of novel, environmental protection, low energy consumption, mechanical electronic hydraulic gas integral, there is very important theory and realistic meaning.
Summary of the invention
Main purpose of the present invention is the frame for movement providing a kind of hydraulic pneumatic composite pile hammer, the hydraulic technique of pile hammer and pneumatic technical combinations problem is solved by new structure, the high-pressure high-flow realizing large-scale pile hammer hydraulic control system controls, and then reach the larger blow energy of hydropneumatic pile hammer and striking frequency, complete and there is high piling efficiency, low noise, small vibration, modern construction operation without features such as fume pollutions.
For reaching above object, solution of the present invention is:
A kind of hydraulic pneumatic composite pile hammer, comprise hydraulic cylinder (the pneumatic complex controll cylinder of Integral hydraulic), the combination of cylinder, piston rod, piston, integrated combination valve block, high pressure accumulator assembly, low pressure accumulator assembly, oil-supply valve, oil return valve combination, cylindrical shell, tailpiece of the piston rod cap assemblies, suspension ring top cover, cylinder end piece, locking nut, seal, cylinder barrel, its two ends adopt flange connection to be connected with suspension ring top cover, integrated combination valve block:
Described piston is installed in cylinder axis hole;
Described piston rod, its one end connects piston, and the other end is connected with the hammer body of pile hammer;
Described integrated combination valve block adopts the frame mode of cartridge valve group that oil-supply valve combination, oil return valve are combined in integrated combination valve block, is arranged on integrated combination valve block by high pressure accumulator assembly, low pressure accumulator Components integration;
Described hydraulic cylinder connection has the hydraulic oil of certain pressure by action of hydraulic force one end at piston, and cylinder connection has the gas of certain pressure by the other end of Aerodynamic force action at piston.Described hydraulic cylinder, piston rod, piston, cylinder structurally forms the pneumatic complex controll cylinder of Integral hydraulic, by the hydraulic coupling that hydraulic cylinder produces, the aerodynamic force that cylinder produces, the gravitional force of piston rod and hammer body forms the hammer force of pile hammer, and realize the reciprocating motion of pile hammer piston rod and hammer body, namely hydraulic cylinder connection has the hydraulic oil of certain pressure by action of hydraulic force one end at piston, cylinder connection has the gas of certain pressure by the other end of Aerodynamic force action at piston, hydraulic coupling and Aerodynamic force action are on same straight line, but the direction of active force is contrary, pass through hydraulic coupling, aerodynamic force, the compound action of hammer body deadweight potential energy realizes reciprocating motion and the piling effect of pile hammer piston rod.
Described integrated combination valve block adopts the frame mode of cartridge valve group that oil-supply valve combination, oil return valve combination of sets are formed in combination valve block, high pressure accumulator assembly, low pressure accumulator Components integration are arranged on combination valve block, adopt without pipeline and integrated form connected mode, when the lifting fast with rapid strike pile body of pile hammer hammer body, realize quick supply and the quick drain of hydraulic pressure large discharge between hydraulic energy source and Integral hydraulic pneumatic complex controll cylinder.Combination integrated valve block avoids complicated pipeline connection, layout and installation, improves the reliability of hydraulic system, solves the outstanding problem that the radial installation dimension of the inner installing space finite sum of pile driver is little.High pressure accumulator assembly is composed in parallel by two or more high pressure accumulator, and low pressure accumulator assembly is composed in parallel by two or more low pressure accumulator.
Described cartridge valve group, comprises oil-supply valve combination and oil return valve combination.Oil-supply valve combines and is made up of two or more in-line plug-in solenoid operated directional valve of parallel connection and controlled in-line cartridge valve thereof; Oil return valve combination is by two or more oil return line plug-in solenoid operated directional valve of parallel connection and controlled oil return line cartridge valve thereof, and oil return line unidirectional cartridge valve composition, oil return line plug-in solenoid operated directional valve and controlled oil return line cartridge valve group in parallel with the unidirectional cartridge valve of oil return line.Cartridge valve be arranged on combination integrated valve block valve body on connect with working connection, by solenoid operated directional valve, cartridge valve is controlled.Cartridge valve employing filtering accuracy is the filter screen of less than 25 μm, prevents the obstruction of spool.Cartridge valve main valve plug quality is little, and stroke is short, is active in one's movements, compact conformation, realizes being connected with integrated form without pipeline, carries out lifting fast of pile hammer hammer body and controls with large discharge during rapid strike pile body.
Described hydraulic energy source, the parallel hydraulic pump group that the hydraulic pump comprising more than Liang Tai and two is connected in parallel, the unidirectional cartridge valve of in-line, unloading electromagnetic valve and pressure-control valve group composition hydraulic power source.In order to meet the requirement of hydraulic cylinder rapid movement, adopt the form of high pressure accumulator group and hydraulic pump group associating fuel feeding, to the quick fuel feeding of Integral hydraulic pneumatic complex controll cylinder.Oil return line adopts the low pressure accumulator group of two or more parallel connection, when return line is longer and return pressure loss is larger, low pressure accumulator group absorbs rapidly the hydraulic oil that the pneumatic complex controll cylinder of Integral hydraulic is discharged, and realizes hurtling down and hitting of pile hammer; Process mesolow Accumulator arrangements is lifted to fuel tank exudate force feed in pile hammer.At Integral hydraulic pneumatic complex controll cylinder piston ascent stage and in-line plug-in solenoid operated directional valve and controlled in-line cartridge valve group thereof are closed time, low pressure accumulator group to hydraulic cylinder repairing, prevents from inhaling empty and absorbing buffering through the unidirectional cartridge valve of oil return line.
Described cylinder, adopt pre-charging pressure, gas adopts the compressed nitrogen of more than 1.5MPa as working media, within a work period of pile hammer, gases at high pressure compression in cylinder, expansion respectively once, complete storage and the release of gas energy, utilize the compression energy of gas in the pile hammer decline stage, hammer body to be accelerated, improve the blow energy of pile hammer, realize the double acting piling function of gas energy and hammer body deadweight.Hammer body lifts in process by the pneumatic complex controll cylinder of Integral hydraulic, cylinder interior gas compression storage power, and the size of this energy and cylinder cavity volume size, hammer body raising height are relevant; The pneumatic complex controll cylinder of Integral hydraulic hits in pile body process, energy stored by cylinder interior gas release, the power of gas directly acts on the piston of the pneumatic complex controll cylinder of Integral hydraulic, hammer body is made to accelerate to decline together with the gravity of hammer body, peak acceleration reaches more than 1g, pile hammer rapid strike pile body, the size of this strike acceleration is relevant with the capacity of water of the size of cylinder storage power, low pressure accumulator group absorbing liquid cylinder pressure exudate force feed.
Further, the pneumatic complex controll cylinder of described Integral hydraulic, adopts full-enclosed structure and piston rod guiding mechanism, can play raked pile and underwater operation.
The present invention is on concrete structure, specifically, the pneumatic piston rod of complex controll cylinder of described Integral hydraulic is connected with the hammer body of pile hammer, realizes reciprocating motion and the piling effect of pile hammer by the compound action of hydraulic coupling, aerodynamic force, hammer body deadweight potential energy.
Owing to have employed said method, the present invention has following characteristics: by providing a kind of frame for movement of hydraulic pneumatic composite pile hammer, solve the hydraulic pressure of pile hammer and pneumatic combinatorial problem, the high-pressure high-flow realizing hydraulic control system controls, and then reach the larger blow energy of hydropneumatic pile hammer and striking frequency, compare with existing diesel pile hammer and general hydraulic pile hammer, hydraulic pneumatic composite pile hammer can realize having high piling efficiency, low noise, small vibration, without the modern construction operation of the features such as fume pollution, based on construction industry provide a kind of novel, environmental protection, the hydraulic pneumatic composite pile hammer foundation pile work mechanized equipment of mechanical electronic hydraulic gas integral.
Accompanying drawing explanation
Fig. 1 is the structural representation of the major part of a kind of embodiment of the present invention.
Fig. 2 is the schematic diagram of the hydraulic control system of a kind of embodiment of the present invention.
Fig. 3 is the schematic diagram of the combination integrated valve block valve body structure of a kind of embodiment of the present invention.
Fig. 4 is the schematic diagram of the cylinder barrel structure of a kind of embodiment of the present invention.
Fig. 5 is the schematic diagram of the hydraulic pneumatic composite pile hammer profile of a kind of embodiment of the present invention.
Graphical sysmbol: 1 is tailpiece of the piston rod cap assemblies, 2 is oil-supply valve combination, 3 is integrated combination valve block, 4 is hexagon socket head cap screw A, 5 is high pressure accumulator assembly, 6 is cylinder barrel, 7 is seal, 8 is hexagon socket head cap screw B, 9 is suspension ring top cover, 10 is hexagon socket head cap screw C, 11 is cylinder end piece, 12 is cylinder, 13 is locking nut, 14 is piston, 15 is hydraulic cylinder (the pneumatic complex controll cylinder of Integral hydraulic), 16 is low pressure accumulator assembly, 17 is piston rod seal pack, 18 is oil return valve combination, 19 is piston rod, 20 is fuel tank, 21 is strainer, 22 is parallel hydraulic pump group, 23 is the unidirectional cartridge valve of in-line, 24 is in-line cartridge valve, 25 is in-line Cha Installed formula two-position four-way solenoid operated directional valve, 26 is charge valve and stop valve group, 27 is nitrogen cylinder, 28 is three-position four-way electromagnetic directional valve, 29 is position sensor (position of record pile hammer), 30 is overflow valve A, 31 is overflow valve B, 32 is oil return line Cha Installed formula two-position four-way solenoid operated directional valve, 33 is oil return line cartridge valve, 34 is pressure meter, 35 is the unidirectional cartridge valve of oil return line back pressure, 36 is the unidirectional cartridge valve of oil return line, 37 is pulse counter (number of times that record pile hammer falls), 38 is overflow valve C, 39 is Stress control cartridge valve, 40 is choke valve, 41 is two-position four-way solenoid operated directional valve, 42 is off-load cartridge valve, 43 is recessed flange, 44 is cylindrical shell, 45 is boss flange, 46 is upper support seat, 47 is middle cylinder body, 48 is lower support seat, 49 is lower cylinder body, 50 is nut (M48 × 36), 51 is hexagon-headed bolt (M48 × 36), 52 is nut (M45 × 36), 53 is hexagon-headed bolt (M45 × 36), 54 is bearing.
Detailed description of the invention
Below in conjunction with embodiment described in accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of the major part of a kind of embodiment of the present invention.As shown in the figure, hydraulic pneumatic composite pile hammer of the present invention, structure comprises tailpiece of the piston rod cap assemblies 1, oil-supply valve combination 2, integrated combination valve block 3, hexagon socket head cap screw A4, high pressure accumulator assembly 5, cylinder barrel 6, seal 7, hexagon socket head cap screw B8, suspension ring top cover 9, hexagon socket head cap screw C10, cylinder end piece 11, cylinder 12, locking nut 13, piston 14, hydraulic cylinder (the pneumatic complex controll cylinder of Integral hydraulic) 15, low pressure accumulator assembly 16, piston rod seal pack 17, oil return valve combination 18, piston rod 19.Wherein, hydraulic cylinder 15, piston rod 19, piston 14, cylinder 12 structurally form the pneumatic complex controll cylinder of Integral hydraulic.Piston rod 19 is connected with the hammer body of pile hammer.
Concrete, the pneumatic complex controll cylinder of Integral hydraulic is the key component of hydraulic pneumatic composite pile hammer.Hydraulic cylinder 15 connection has the hydraulic oil of certain pressure by action of hydraulic force one end at piston, cylinder 12 connection has the gas of certain pressure by the other end of Aerodynamic force action at piston, hydraulic coupling and Aerodynamic force action are on same straight line, but the direction of active force is contrary, pass through hydraulic coupling, the compound action of aerodynamic force and hammer body deadweight realizes the reciprocating motion of piston rod 19, namely by hydraulic coupling that hydraulic cylinder 15 produces, the aerodynamic force that cylinder 12 produces, the gravitional force of piston rod 19 and hammer body forms the hammer force of pile hammer, pass through hydraulic coupling, aerodynamic force, the compound action of hammer body deadweight potential energy realizes reciprocating motion and the piling effect of pile hammer piston rod.
Described integrated combination valve block 3 adopts the frame mode of cartridge valve group that oil-supply valve combination 2, oil return valve combination 18 are integrated in integrated combination valve block, by high pressure accumulator assembly 5, low pressure accumulator assembly 16 integrated installation on integrated combination valve block, adopt without pipeline and integrated form connected mode, when the lifting fast with rapid strike pile body of pile hammer hammer body, realize quick supply and the quick drain of hydraulic pressure large discharge between hydraulic energy source and Integral hydraulic pneumatic complex controll cylinder.Combination integrated valve block 3 avoids complicated pipeline connection, layout and installation, improves the reliability of hydraulic system, solves the outstanding problem that the radial installation dimension of the inner installing space finite sum of pile driver is little.High pressure accumulator assembly 5 is composed in parallel by two or more high pressure accumulator, and low pressure accumulator assembly 16 is composed in parallel by two or more low pressure accumulator.
Described cartridge valve group comprises oil-supply valve combination 2 and oil return valve combination 18.Oil-supply valve combination 2 is made up of two or more in-line plug-in solenoid operated directional valve of parallel connection and controlled in-line cartridge valve thereof; Oil return valve combination 18 is by two or more oil return line plug-in solenoid operated directional valve of parallel connection and controlled oil return line cartridge valve thereof, and oil return line unidirectional cartridge valve composition, oil return line plug-in solenoid operated directional valve and controlled oil return line cartridge valve group in parallel with the unidirectional cartridge valve of oil return line.Cartridge valve be arranged on combination integrated valve block valve body on connect with hydraulic energy source, by solenoid operated directional valve, cartridge valve is controlled.Cartridge valve employing filtering accuracy is the filter screen of less than 25 μm, prevents the obstruction of spool.Cartridge valve main valve plug quality is little, and stroke is short, is active in one's movements, compact conformation, realizes being connected with integrated form without pipeline, carries out lifting fast of pile hammer hammer body and controls with large discharge during rapid strike pile body.
Fig. 2 is the schematic diagram of the hydraulic control system of a kind of embodiment of the present invention.The hydraulic control system of this embodiment comprises hydraulic energy source, oil-supply valve combination, the pneumatic complex controll cylinder of Integral hydraulic, oil return valve combination, high pressure accumulator group, low pressure accumulator group, checkout gear part composition.
Concrete, hydraulic energy source by fuel tank 20, strainer 21, parallel hydraulic pump group 22, the unidirectional cartridge valve 23 of in-line, charge valve and stop valve group 26, nitrogen cylinder 27, three-position four-way electromagnetic directional valve 28, overflow valve A30, overflow valve B31, pressure meter 34, the unidirectional cartridge valve 35 of oil return line back pressure, pulse counter (number of times that record pile hammer falls) 37, overflow valve C38, Stress control cartridge valve 39, choke valve 40, two-position four-way solenoid operated directional valve 41, off-load cartridge valve 42 forms.Parallel hydraulic pump group 22 drives the hydraulic pump of 3 flow 580L/min respectively by the diesel engine of 3 300KW or motor, produces hydraulic energy source; Two-position four-way solenoid operated directional valve 41, off-load cartridge valve 42 forms unloading electromagnetic valve, in emergency circumstances carries out off-load at hydraulic energy source.Three-position four-way electromagnetic directional valve 28, overflow valve A30, overflow valve B31, overflow valve C38, Stress control cartridge valve 39, choke valve 40 decomposition pressure control valve group, the operating pressure of hydraulic control energy resource system.The return pressure of oil return line back pressure unidirectional cartridge valve 35 initialization system, thus regulate low pressure accumulator group 16 to the operating pressure of hydraulic cylinder 15 repairing, avoid hydraulic cylinder 15 to inhale sky.Nitrogen cylinder 27, charge valve and stop valve group 26 are inflated in advance to the cylinder 12 of the pneumatic complex controll cylinder 15 of Integral hydraulic.
Oil-supply valve combination 2 is by in-line cartridge valve 24, in-line Cha Installed formula two-position four-way solenoid operated directional valve 25 forms, concrete, 1 two-position four-way solenoid operated directional valve 25 is adopted to control the in-line cartridge valve 24 of 3 cartridge valve compositions in parallel, by the Synchronization Control of in-line cartridge valve group, realize the opening and closing of high flow rate oil supply valve combination 2.
Oil return valve combination 18 inserts Installed formula two-position four-way solenoid operated directional valve 32 by oil return line, oil return line cartridge valve 33, the unidirectional cartridge valve 36 of oil return line forms, concrete, 1 two-position four-way solenoid operated directional valve 32 is adopted to control the oil return line cartridge valve 33 of 4 cartridge valve compositions in parallel, by the Synchronization Control of oil return line cartridge valve group, realize the opening and closing of large discharge oil return valve combination 18.At Integral hydraulic pneumatic complex controll cylinder 15 piston rod 19 ascent stage and in-line valve combination 1 is closed time, low pressure accumulator group 16 to hydraulic cylinder 15 repairing, prevents hydraulic cylinder 15 from inhaling empty and absorbing buffering through the unidirectional cartridge valve 36 of oil return line.
High pressure accumulator group 5 is composed in parallel by the high pressure accumulator of 3 volumes more than 32 liters; The hydraulic cylinder that high pressure accumulator group 5 and parallel hydraulic pump group 22 are combined to the pneumatic complex controll cylinder 15 of Integral hydraulic provides large discharge, realizes the quick rising of Integral hydraulic pneumatic complex controll cylinder 15.Low pressure accumulator group 16 is composed in parallel by the low pressure accumulator of 4 volumes more than 16 liters; When the piston rod 19 of the pneumatic complex controll cylinder 15 of Integral hydraulic is in the strike pile body stage, the large discharge that low pressure accumulator group 16 absorbing liquid cylinder pressure 15 is discharged, thus realize rapid strike pile body; When the piston rod 19 of the pneumatic complex controll cylinder 15 of Integral hydraulic is in ascent stage, low pressure accumulator group 16 by hydraulic oil by pipeline to fuel tank oil extraction.
Checkout gear is by pulse counter (number of times that record pile hammer falls) 37, and position sensor (position of record pile hammer) 29 forms.Oil feed line diameter is 80mm, and return line diameter is 150mm.The volume of fuel tank is 5000L.
Fig. 3 is the schematic diagram of the integrated combination valve block valve body structure of a kind of embodiment of the present invention.Oil-supply valve combination 2 and oil return valve combination 18 are installed in one end of the valve body of integrated combination valve block 3, other end installation high-voltage accumulator package 5 and low pressure accumulator assembly 16, solve the problem of installing more Hydraulic Elements in limited radial space, reduce pipeline and connect the reliability that improve hydraulic system.
Fig. 4 is the schematic diagram of the cylinder barrel structure of a kind of embodiment of the present invention.The cylinder barrel 6 of hydraulic pneumatic composite pile hammer is by recessed flange 43; cylindrical shell 44; boss flange 45 and bearing 54 form; its two ends adopt flange connection to be connected with suspension ring top cover 9, integrated combination valve block 3; cylinder barrel 6 plays protection integrated combination valve block 3, high pressure accumulator assembly 5 and low pressure accumulator assembly 16, the cylinder 12 of the pneumatic complex controll cylinder 15 of Integral hydraulic and the effect of source of the gas part thereof, simultaneously structurally for the installation of hydraulic pneumatic composite pile hammer provides support structure.
Fig. 5 is the schematic diagram of the hydraulic pneumatic composite pile hammer profile of a kind of embodiment of the present invention.Profile is seen by suspension ring top cover 9, hexagon socket head cap screw C10, cylinder barrel 6, integrated combination valve block 3, upper support seat 46, middle cylinder body 47, lower support seat 48, lower cylinder body 49, nut (M48 × 36) 50, hexagon-headed bolt (M48 × 36) 51, nut (M45 × 36) 52, hexagon-headed bolt (M45 × 36) 53, the compositions such as hexagon socket head cap screw A4.The inside of the hydraulic pneumatic composite pile hammer of this embodiment is provided with the pneumatic complex controll cylinder 15 of Integral hydraulic, position sensor 29, pulse counter 37, charge valve and stop valve group 26, hammer body, hammer body guiding mechanism.By the nitrogen aerating device set up and pressure sensor and electromagnetic on-off valve, can be inflated the air cavity of cylinder 12 by charge valve and stop valve group 26; Position sensor 29 is for recording the position of pile hammer; The number of times that pulse counter 37 falls for recording pile hammer.Top is provided with suspension ring, for constructing operation.Hammer body guiding mechanism connects pile monkey and pile cover, is provided with the rubber-like liner of buffering and is suitable for fixture joint and the sensor such as blow energy, striking frequency of various stake type and size.
Further, pile hammer of the present invention, owing to adopting full-enclosed structure and piston rod guiding mechanism, can realize the piling work of vertical direction, can also realize beating raked pile.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art are according to announcement of the present invention, and the improvement made for the present invention and amendment all should within protection scope of the present invention.
Claims (8)
1. a hydraulic pneumatic composite pile hammer, it is characterized in that: pile hammer has hammer body, also comprise tailpiece of the piston rod cap assemblies, suspension ring top cover, cylinder end piece, cylinder, piston, hydraulic cylinder, piston rod seal pack, integrated combination valve block, high pressure accumulator assembly, oil-supply valve combination, low pressure accumulator assembly and oil return valve combination, and;
Cylinder barrel, its two ends adopt flange connection to be connected with suspension ring top cover, integrated combination valve block:
Described piston is installed in cylinder axis hole;
Described piston rod, its one end connects piston, and the other end is connected with the hammer body of pile hammer;
Described integrated combination valve block adopts the frame mode of cartridge valve group that oil-supply valve combination, oil return valve are combined in integrated combination valve block, is arranged on integrated combination valve block by high pressure accumulator assembly, low pressure accumulator Components integration;
Described hydraulic cylinder connection has the hydraulic oil of certain pressure by action of hydraulic force one end at piston, and cylinder connection has the gas of certain pressure by the other end of Aerodynamic force action at piston.
2. hydraulic pneumatic composite pile hammer according to claim 1, is characterized in that: described hydraulic cylinder, piston rod, piston, cylinder structurally form the pneumatic complex controll cylinder of Integral hydraulic.
3. hydraulic pneumatic composite pile hammer according to claim 1, is characterized in that: described high pressure accumulator assembly is composed in parallel by plural high pressure accumulator; Described low pressure accumulator assembly is composed in parallel by two or more low pressure accumulator.
4. hydraulic pneumatic composite pile hammer according to claim 1, it is characterized in that: described oil-supply valve combines and is made up of the plural in-line plug-in solenoid operated directional valve of parallel connection and controlled in-line cartridge valve thereof, described oil return valve combination is made up of two or more oil return line plug-in solenoid operated directional valve of parallel connection and controlled oil return line cartridge valve thereof and the unidirectional cartridge valve of oil return line, described oil return line plug-in solenoid operated directional valve and controlled oil return line cartridge valve in parallel with the unidirectional cartridge valve of oil return line, and the oil return line cartridge valve of cartridge valve composition in parallel is controlled by oil return line plug-in solenoid operated directional valve.
5. hydraulic pneumatic composite pile hammer according to claim 1, it is characterized in that: also comprise hydraulic control system and comprise hydraulic energy source, oil-supply valve combines, the pneumatic complex controll cylinder of Integral hydraulic, oil return valve combination, high pressure accumulator group, low pressure accumulator group, checkout gear part forms, wherein, hydraulic energy source is by fuel tank, strainer, parallel hydraulic pump group, the unidirectional cartridge valve of in-line, charge valve and stop valve group, nitrogen cylinder, three-position four-way electromagnetic directional valve, overflow valve, overflow valve, pressure meter, the unidirectional cartridge valve of oil return line back pressure, pulse counter, overflow valve, Stress control cartridge valve, choke valve, two-position four-way solenoid operated directional valve, off-load cartridge valve forms, high pressure accumulator group and parallel hydraulic pump group are combined provides large discharge to the pneumatic complex controll cylinder of Integral hydraulic, realize the quick rising of Integral hydraulic pneumatic complex controll cylinder.
6. hydraulic pneumatic composite pile hammer according to claim 5, it is characterized in that: described integrated combination valve block adopts the frame mode of cartridge valve group that oil-supply valve combination, oil return valve combination of sets are formed in integrated combination valve block, adopting is arranged on integrated combination valve block without pipeline and integrated form connected mode by high pressure accumulator assembly, low pressure accumulator Components integration, when the lifting fast with rapid strike pile body of pile hammer hammer body, realize quick supply and the quick drain of hydraulic pressure large discharge between hydraulic energy source and Integral hydraulic pneumatic complex controll cylinder.
7. the hydraulic pneumatic composite pile hammer according to any one of claim 2-6, is characterized in that: institute's low pressure accumulator group is composed in parallel by 4 low pressure accumulators; When the piston rod of the pneumatic complex controll cylinder of Integral hydraulic is in the strike pile body stage, the large discharge that low pressure accumulator group absorbing liquid cylinder pressure is discharged, thus realize rapid strike pile body; When the piston rod of the pneumatic complex controll cylinder of Integral hydraulic is in ascent stage, low pressure accumulator group by hydraulic oil by pipeline to fuel tank oil extraction.
8. the hydraulic pneumatic composite pile hammer according to any one of claim 1-6, it is characterized in that: described cylinder adopts pre-inflation, gas adopts compressed nitrogen, within a work period of pile hammer, gases at high pressure compression in cylinder, expansion are respectively once, complete storage and the release of gas energy, described nitrogen cylinder, charge valve and stop valve group are inflated in advance to the cylinder of the pneumatic complex controll cylinder of Integral hydraulic.
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2010
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| JPS57146828A (en) * | 1981-03-03 | 1982-09-10 | Takashi Takee | Oil-pressure drop hammer for driving pile |
| CN2464777Y (en) * | 2001-02-27 | 2001-12-12 | 华南理工大学 | Hydraulic-pneumatic driving device for hydraulic piling hammer |
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| CN101748730A (en) * | 2009-12-15 | 2010-06-23 | 高天宝 | Multi-function closed cylinder type hydraulic piling hammer |
| CN201649087U (en) * | 2010-04-01 | 2010-11-24 | 湖南华宇生物工程机械有限公司 | Gas-liquid control drive system for hydraulic pile-driving hammer capable of wirelessly adjusting impact energy and frequency |
| CN201915406U (en) * | 2010-12-23 | 2011-08-03 | 上海工程机械厂有限公司 | Hydraulic and pneumatic combined pile hammer |
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| CN102535465A (en) | 2012-07-04 |
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