CN202543938U - Hydraulic mechanism for eccentricity-adjustable hydraulic vibratory pile driver-extractor - Google Patents

Hydraulic mechanism for eccentricity-adjustable hydraulic vibratory pile driver-extractor Download PDF

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Publication number
CN202543938U
CN202543938U CN201220159951XU CN201220159951U CN202543938U CN 202543938 U CN202543938 U CN 202543938U CN 201220159951X U CN201220159951X U CN 201220159951XU CN 201220159951 U CN201220159951 U CN 201220159951U CN 202543938 U CN202543938 U CN 202543938U
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valve
hydraulic
hxf
sequence
oil
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罗春雷
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CHANGSHA HUKUN CONSTRUCTION MACHINERY Co Ltd
Central South University
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CHANGSHA HUKUN CONSTRUCTION MACHINERY Co Ltd
Central South University
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Abstract

一种可调矩液压振动沉拔桩机液压机构，采用两个顺序阀和一个电液换向阀以及一个压差换向阀，通过改变控制系统油压，依次完成液压振动锤启动——零偏心矩调节过程——补油过程——两台液压马达联动启动——振动沉拔桩过程——零偏心矩调节过程——补油过程——两台液压马达停转以及故障时所有偏心块停止动作等顺序控制过程，本实用新型充分利用液压传动易于对液体压力和流动方向进行控制的优点，使不再完全依赖现场技术人员的实际经验来操作零偏心矩及最大偏心矩的切换，方便现场沉拔桩作业。

Figure 201220159951

A torque-adjustable hydraulic vibration pile sinking and pulling machine hydraulic mechanism adopts two sequence valves, an electro-hydraulic reversing valve and a differential pressure reversing valve. By changing the oil pressure of the control system, the hydraulic vibratory hammer is started sequentially—zero Eccentric moment adjustment process - oil replenishment process - linkage start of two hydraulic motors - vibration pile pulling process - zero eccentric moment adjustment process - oil replenishment process - two hydraulic motors stop and all eccentric blocks in case of failure The utility model makes full use of the advantages of hydraulic transmission, which is easy to control the liquid pressure and flow direction, so that it is no longer completely dependent on the actual experience of field technicians to operate the switching of zero eccentric moment and maximum eccentric moment, which is convenient On-site pile sinking and pulling operations.

Figure 201220159951

Description

Adjustable square hydraulic vibration extracting-driving pile machine hydraulic mechanism
Technical field
The utility model relates to a kind of hydraulic mechanism, particularly a kind of adjustable square hydraulic vibration extracting-driving pile machine hydraulic mechanism.
Background technology
The hydraulic vibration extracting-driving pile machine is by hydraulic-driven; Do to rotate in opposite directions forming periodic exciting force through two groups of eccentric blocks, make stake produce a vertical up-down vibration, cause stake and pile peripheral earth to be in the forced vibration state with speed; Make pile peripheral earth liquefy; Penetrating resistance reduces greatly, so under deadweight of pile monkey and pile body and the effect of pile monkey exciting force, overcome inertia resistance and sink in the soil gradually.Vibrohammer is accomplished the pile sinking operation with mode of vibration, thereby can inevitably vibration be passed to pile frame and surrounding environment.Starting and the shutdown stage especially, vibration frequency will be passed through pile frame resonance frequency district, and (6～12HZ), the resonance of pile frame will cause entire machine high vibration and huge noise, can have a strong impact on construction operation environment and equipment life.Theory according to mechanical oscillation can be known, if the eccentric throw of eccentric block is zero, then amplitude also is zero.Thereby if can start and to make the eccentric throw of eccentric block be zero the shutdown stage, can make the vibrator amplitude is zero, just can realize that pile frame does not have resonance and constructs.Patent " hydraulic vibration extracting-driving pile machine transfer moment device " (patent No. CN200520050203.8) thus proposed to adopt eccentric drive hydraulic oil cylinder driving eccentric block to reach the scheme of transferring the square purpose first; But the switching controls of zero eccentricity and maximum eccentric square relies on technician's construction experience fully in the scheme; And serious vibration and noise still can appear in the stake machine when some eccentric drive oil cylinders block, thereby have a strong impact on its application and popularization on existing hydraulic vibration driver.
The utility model content
The purpose of the utility model be to overcome the deficiency of prior art and provide a kind of simple in structure, effectively alleviate the adjustable square hydraulic vibration extracting-driving pile machine hydraulic mechanism of labor strength.
A kind of adjustable square hydraulic vibration extracting-driving pile machine hydraulic mechanism comprises sequence valve XF 2, sequence valve XF 1, electro-hydraulic reversing valve HXF 1With pressure reduction reversal valve HXF 4, said sequence valve XF 2Outlet and one way valve DF 5With one way valve DF 6Connect said sequence valve XF 2Inlet and control system pressure oil p kCommunicate said sequence valve XF 2Outside control mouth and solenoid operated directional valve HXF 3A 3Mouth is connected; Said sequence valve XF 1Outside control mouth directly with control system pressure oil p kConnect said sequence valve XF 1Outlet and electro-hydraulic reversing valve HXF 1The hydraulic control mouth connect said sequence valve XF 1Outlet through choke valve JF 2, connect with fuel tank behind the oil filter LQ; Said electro-hydraulic reversing valve HXF 1Inlet A 1With cartridge valve CF 1Control chamber C 1Pass through a choke valve JF after the parallel connection again 3With system pressure oil p sCommunicate said cartridge valve CF 1Inlet D 1With system pressure oil p sCommunicate said cartridge valve CF 1Outlet E 1Behind oil filter LQ, communicate said electro-hydraulic reversing valve HXF with fuel tank 1Outlet B 1With cartridge valve CF 1Outlet E 1Connect; Said pressure reduction reversal valve HXF 4Two hydraulic control mouth G, H respectively with eccentric drive oil cylinder PG 1, PG 2Rod end chamber communicate said pressure reduction reversal valve HXF 4Inlet A 4Directly with control system pressure oil p kConnect said pressure reduction reversal valve HXF 4Outlet B 4Through choke valve JF 4The back communicates with fuel tank.
In the utility model, said sequence valve XF 1With sequence valve XF 2Be the external control formula sequence valve that leaks.
The employing such scheme uses the sequential control hydraulic cylinder to come to drive eccentric block flexibly and goes back to zero-bit and maximum eccentric position, has avoided pile frame in the startup and the violent covibration in the stage of shutdown, and system architecture is simple, reliability is high; Make full use of hydraulic drive and be easy to advantage that fluid pressure and flow direction are controlled, make the practical experience that relies on the field technician no longer fully operate the switching of zero eccentricity and maximum eccentric square, convenient on-the-spot heavy pile pulling operation.
Description of drawings
Fig. 1 is the hydraulic control schematic diagram of the utility model.
Fig. 2 is the utility model sequence valve XF 2And pressure reduction reversal valve HXF 4Control principle figure.
Fig. 3 is the utility model sequence valve XF 1And electro-hydraulic reversing valve HXF 1Control principle figure.
The specific embodiment
Below in conjunction with accompanying drawing, specify the specific embodiment of the utility model.
Like Fig. 1,2, shown in 3, a kind of adjustable square hydraulic vibration extracting-driving pile machine hydraulic mechanism, two hydraulic motor M 1, M 2Be by two hydraulic pump B 1, B 2Respectively through one way valve DF 1, one way valve DF 2, the system pressure oil p that exports after the parallel connection again sDrive two eccentric drive oil cylinder PG 1, PG 2Cylinder barrel respectively with hydraulic motor M 1, M 2The gyroaxis that drives is fastenedly connected two eccentric drive oil cylinder PG 1, PG 2Enclosed cavity respectively with Synchronization Control oil cylinder TG 1, TG 2Rodless cavity communicate two Synchronization Control oil cylinder TG 1, TG 2The rod chamber parallel connection after, and by hydraulic pump B 3Output is also passed through solenoid operated directional valve HXF 3, cartridge valve CF 2And CF 3External control system pressure oil p kCommunicate cartridge valve CF 2Control chamber C 2With cartridge valve CF 3Entrance cavity D 3Back and solenoid operated directional valve HXF are in parallel 3A 3Mouth is connected cartridge valve CF 2Entrance cavity D 2With cartridge valve CF 3Control chamber C 3After being in parallel again with solenoid operated directional valve HXF 3B 3Mouth is connected cartridge valve CF 2Outlet plenum E 2With cartridge valve CF 3Outlet plenum E 3After the parallel connection again with two Synchronization Control oil cylinder TG 1, TG 2Rod chamber communicate, comprise sequence valve XF 2, sequence valve XF 1, electro-hydraulic reversing valve HXF 1With pressure reduction reversal valve HXF 4, said sequence valve XF 2Outlet and one way valve DF 5With one way valve DF 6Connect said one way valve DF 5With eccentric drive oil cylinder PG 1Connect said one way valve DF 6With eccentric drive oil cylinder PG 2Connect said sequence valve XF 2Inlet and control system pressure oil p kCommunicate said sequence valve XF 2Outside control mouth and solenoid operated directional valve HXF 3A 3Mouth is connected; Said sequence valve XF 1Outside control mouth directly with control system pressure oil p kConnect said sequence valve XF 1Outlet and electro-hydraulic reversing valve HXF 1The hydraulic control mouth connect said sequence valve XF 1Outlet through choke valve JF 2, connect with fuel tank behind the oil filter LQ; Said electro-hydraulic reversing valve HXF 1Inlet A 1With cartridge valve CF 1Control chamber C 1Pass through a choke valve JF after the parallel connection again 3With system pressure oil p sCommunicate cartridge valve CF 1Inlet D 1With system pressure oil p sCommunicate cartridge valve CF 1Outlet E 1Behind oil filter LQ, communicate said electro-hydraulic reversing valve HXF with fuel tank 1Outlet B 1With cartridge valve CF 1Outlet E 1Connect; Said pressure reduction reversal valve HXF 4Two hydraulic control mouth G, H respectively with eccentric drive oil cylinder PG 1, PG 2Rod end chamber communicate said pressure reduction reversal valve HXF 4Inlet A 4Directly with control system pressure oil p kConnect said pressure reduction reversal valve HXF 4Outlet B 4Through choke valve JF 4The back communicates with fuel tank.This mechanism adopts two sequence valves and an electro-hydraulic reversing valve and a pressure reduction reversal valve; Through changing the control system oil pressure, accomplish hydraulic vibration driver successively and start that---------two hydraulic motors interlocks start, and------all eccentric blocks stop sequence control procedures such as action to the heavy pile pulling process of vibration to the repairing process to zero eccentricity adjustment process when zero two hydraulic motor stalls of eccentricity adjustment process---repairing process---and fault.
The detailed process that this hydraulic mechanism is realized is following:
1. before starting shooting, the equal dead electricity of 1YA～4YA, solenoid operated directional valve HXF 2, HXF 3All be in meta, reversal valve HXF 1Be in right position, thus cartridge valve CF 1Be opened, thereby hydraulic pump B 1, B 2The hydraulic oil that pumps is through cartridge valve CF 1Off-load.So hydraulic pump starts back two hydraulic motors and can not rotate.It is original state for sequential control.
2. after hydraulic pump starts, coil 1YA, 3YA successively electric, thereby solenoid operated directional valve HXF 2, HXF 3Successively be placed in position, a left side.As solenoid operated directional valve HXF 3When being in position, a left side, cartridge valve CF 3Be opened cartridge valve CF 2Be in closed condition, then hydraulic pump B 3The control oil that pumps is through reversal valve HXF 3, cartridge valve CF 3Get into Synchronization Control oil cylinder TG 1, TG 2, two oil cylinder TG 1, TG 2Size identical, and both piston rods adopt again and are rigidly connected, thereby to two eccentric drive oil cylinder PG 1, PG 2Import isopyknic fluid, promote PG respectively 1, PG 2Interior piston is synchronized with the movement, and drives eccentric block and gets into zero eccentric position simultaneously.
3. after eccentric block arrives zero eccentric position, two eccentric drive oil cylinder PG 1, PG 2The piston stop motion, fluid stops to flow, its pressure rises rapidly, in case rise to sequence valve XF 2Set pressure, sequence valve XF 2Just be opened, controlled pressure oil passes through DF 5, DF 6Give two eccentric drive oil cylinder PG 1, PG 2Repairing.In the repairing process, control-oil pressure will further raise.
4. the pressure when control oil is elevated to sequence valve XF 1The set pressure value time, sequence valve XF 1Just be opened.Then control oil is through solenoid operated directional valve HXF 2, sequence valve XF 1, will make reversal valve HXF 1Place position, a left side, cartridge valve CF 1Be closed hydraulic pump B 1, B 2Stop off-load, system pressure oil p sGet into hydraulic motor M 1, M 2, two hydraulic motors no back pressure under zero eccentricity starts, and vibrator will not produce vibration this moment.
5. as two hydraulic motor M 1, M 2After the startup, coil 3YA dead electricity, 4YA get electric, solenoid operated directional valve HXF 3Be placed in right position, cartridge valve CF 2Be opened, cartridge valve CF 3Be closed two control oil cylinder TG 1, TG 2Rod chamber communicate with fuel tank.At this moment, the eccentric block exciting force that produces of revolution and spring force make two eccentric drive oil cylinder PG 1, PG 2Fluid in the enclosed cavity flows back to fuel tank, eccentric block thereby get into the maximum eccentric position rapidly, and vibrator begins vibration this moment.Then, coil 1YA, 4YA be dead electricity, solenoid operated directional valve HXF 2, HXF 3All be in meta.Guaranteed the pile vibrosinking of vibrating hammer in the maximum eccentric position.
6. in the time of after accomplishing a construction of prefabricated piles, need stopping the pile sinking operation, coil 2YA gets electric earlier, solenoid operated directional valve HXF 2Place right position, then coil 3YA again electric, solenoid operated directional valve HXF 3Be in position, a left side, cartridge valve CF 3Be opened cartridge valve CF 2Be in closed condition, control oil is able to promote two control oil cylinder TG 1, TG 2Interior piston, thus make eccentric block get back to zero eccentric position.
7. after eccentric block reaches zero eccentric position, two eccentric drive oil cylinder PG 1, PG 2All stop motions of piston, fluid stops to flow, its pressure rises rapidly, in case rise to sequence valve XF 2Setting pressure, sequence valve XF 2Promptly be opened, controlled pressure oil is through two one way valve DF 5, DF 6Respectively to two eccentric drive oil cylinder PG 1, PG 2Repairing.In the repairing process, control-oil pressure can further raise.
8. the pressure when control oil is elevated to sequence valve XF 1The set pressure value time, sequence valve XF 1Just be opened.Electro-hydraulic reversing valve HXF 1The hydraulic control mouth through sequence valve XF 1, reversal valve HXF 2Connect electro-hydraulic reversing valve HXF with fuel tank 1Return to right position, cartridge valve CF 1Be opened, thereby hydraulic pump B 1, B 2Through cartridge valve CF 1Off-load.Thereby make two hydraulic motor M 1, M 2Stall.
9. as any eccentric drive oil cylinder PG 1, PG 2Piston rod driving eccentric block in the process of extrapolation during because of unexpected blocking, the control chamber oil pressure that block the eccentric drive oil cylinder will produce the suction sky and be inclined to the pressure reduction reversal valve HXF that then is attached thereto 4The pressure of two hydraulic control mouths will be no longer equal, pressure reduction reversal valve HXF 4Promptly be opened, controlled pressure oil is through reversal valve HXF 4Take back fuel tank, all stop motions of all eccentric blocks can show this failure cause through electronic warning, get into the troubleshooting stage.

Claims (2)

1.一种可调矩液压振动沉拔桩机液压机构，其特征在于：包括顺序阀XF2、顺序阀XF1、电液换向阀HXF1和压差换向阀HXF4，所述顺序阀XF2的出口与单向阀DF5和单向阀DF6连接，所述顺序阀XF2的入口与控制系统压力油pk相通，所述顺序阀XF2的外控口与电磁换向阀HXF3的A3口相连接；所述顺序阀XF1的外控口直接与控制系统压力油pk接通，所述顺序阀XF1的出口与电液换向阀HXF1的液控口连接，所述顺序阀XF1的出口通过节流阀JF2、滤油器LQ后与油箱接通；所述电液换向阀HXF1的入口A1与插装阀CF1的控制腔C1并联后再通过一节流阀JF3与系统压力油ps相通，所述插装阀CF1的入口D1与系统压力油ps相通，所述插装阀CF1的出口E1经滤油器LQ后与油箱相通，所述电液换向阀HXF1的出口B1与插装阀CF1的出口E1接通；所述压差换向阀HXF4的两液控口G、H分别与偏心驱动油缸PG1、PG2的活塞杆腔相通，所述压差换向阀HXF4的入口A4直接与控制系统压力油pk接通，所述压差换向阀HXF4的出口B4经节流阀JF4后与油箱相通。1. A hydraulic mechanism of adjustable torque hydraulic vibration pile sinking and pulling machine, characterized in that it includes sequence valve XF 2 , sequence valve XF 1 , electro-hydraulic reversing valve HXF 1 and differential pressure reversing valve HXF 4 , the sequence The outlet of the valve XF 2 is connected with the one-way valve DF5 and the one-way valve DF 6 , the inlet of the sequence valve XF 2 is connected with the pressure oil p k of the control system, and the external control port of the sequence valve XF 2 is connected with the electromagnetic reversing valve A 3 port of HXF 3 is connected; the external control port of the sequence valve XF 1 is directly connected with the pressure oil p k of the control system, and the outlet of the sequence valve XF 1 is connected with the hydraulic control port of the electro-hydraulic reversing valve HXF 1 The outlet of the sequence valve XF 1 is connected to the oil tank after passing through the throttle valve JF 2 and the oil filter LQ; the inlet A 1 of the electro-hydraulic reversing valve HXF 1 is connected to the control chamber C of the cartridge valve CF 1 1 is connected in parallel and then communicated with the system pressure oil p s through a throttle valve JF 3 , the inlet D 1 of the cartridge valve CF 1 is communicated with the system pressure oil p s , and the outlet E 1 of the cartridge valve CF 1 passes through After the oil filter LQ is connected to the oil tank, the outlet B 1 of the electro-hydraulic directional valve HXF 1 is connected to the outlet E 1 of the cartridge valve CF 1; the two-hydraulic control port G of the differential pressure directional valve HXF 4 , H communicate with the piston rod chambers of the eccentric drive cylinders PG 1 and PG 2 respectively, the inlet A 4 of the differential pressure reversing valve HXF 4 is directly connected with the pressure oil p k of the control system, and the differential pressure reversing valve HXF The outlet B 4 of 4 communicates with the fuel tank after passing through the throttle valve JF 4 . 2.根据权利要求1所述的可调矩液压振动沉拔桩机液压机构，其特征在于：所述顺序阀XF1和顺序阀XF2均为外控外泄式顺序阀。2. The adjustable torque hydraulic vibration pile sinking and pulling machine hydraulic mechanism according to claim 1, characterized in that: the sequence valve XF 1 and the sequence valve XF 2 are both externally controlled and externally leaked sequence valves.
CN201220159951XU 2012-04-16 2012-04-16 Hydraulic mechanism for eccentricity-adjustable hydraulic vibratory pile driver-extractor Expired - Fee Related CN202543938U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103174816A (en) * 2013-04-03 2013-06-26 湘潭大学 Pressure difference control type infinitely variable transmission flux active control system
CN105464116A (en) * 2016-01-16 2016-04-06 东莞市新宝钢结构工程有限公司 High-speed hydraulic pile driving and drawing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103174816A (en) * 2013-04-03 2013-06-26 湘潭大学 Pressure difference control type infinitely variable transmission flux active control system
CN103174816B (en) * 2013-04-03 2015-09-02 湘潭大学 A kind of pressure differential control type stepless speed variator flow active control system
CN105464116A (en) * 2016-01-16 2016-04-06 东莞市新宝钢结构工程有限公司 High-speed hydraulic pile driving and drawing machine

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C14 Grant of patent or utility model
GR01 Patent grant
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Luo Chunlei

Inventor after: Liu Fanghua

Inventor after: Fan Zenghui

Inventor after: Song Changchun

Inventor after: Zhang Yi

Inventor before: Luo Chunlei

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: LUO CHUNLEI TO: LUO CHUNLEI LIU FANGHUA FAN ZENGHUI SONG CHANGCHUN ZHANG YI

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121121

Termination date: 20130416