CN206034442U - Static pile driver hydraulic control system - Google Patents

Abstract

The utility model provides a static pile driver hydraulic control system, includes the oil tank, with first hydraulic pump and second hydraulic pump that the oil tank is connected, with a hydraulic pump connection's first check valve, with first check valve is connected the first switching -over valve that is clamp stake hydro -cylinder fuel feeding and is the second switching -over valve of diecasting institution fuel feeding, with the 2nd hydraulic pump connection's second check valve, parallel connection is the third switching -over valve of the hydraulic rotary motor fuel feeding of hoist respectively, for the fourth switching -over valve of roll poplar hydraulic motor fuel feeding, for the 5th switching -over valve of luffing cylinder fuel feeding, for the 6th switching -over valve of boom telescope hydraulic drive mechanism fuel feeding, with the foot valve of third switching -over valve, fourth switching -over valve, the 5th switching -over valve and the 6th switching -over valve parallel connection, the oil return opening of third switching -over valve, fourth switching -over valve, the 5th switching -over valve and the 6th switching -over valve with the play oil pipe of first check valve connects, the foot valve is used for adjusting the reposition of redundant personnel flow of second hydraulic pump.

Description

A kind of static pile press hydraulic control system

Technical field

This utility model is related to the piling machinery in engineering machinery, more particularly, to a kind of hydraulic control of static pile press System.

Background technology

China starts to release and use static pile press from 20th century the nineties, and the machine mainly exists in the world at present China produces and uses；Static pile press has the advantages that noiselessness, pollution-free (Motor drive), working performance are high, especially fits Should be in urban architecture foundation construction.Static press piling machine operation is clamped pile body using the hydraulic jack of pile chuck, then uses Piling oil cylinder promotes pile chuck that pile body is pressed into underground；Simultaneously also need in work progress using equipment it is subsidiary hang a lifting Machine.An important requirement to static pile press is firmly to clamp pile body, but while and is unlikely to chucking power and crosses senior general's stake Body folder splits, and this is the key element for affecting static pile press normal operation.The clip pile control hydraulic system of existing static pile press Structure include that the components such as fuel tank, oil pump, relief valve, reversal valve, hydraulic lock, clip pile oil cylinder, overload valve are connected and composed；Its work Principle is：In operation, reversal valve is manipulated, the pressure oil that oil pump comes enters the big chamber of clip pile oil cylinder, and clip pile oil cylinder is in pressure oil In the presence of pile body is clamped, hydraulic lock is used for preventing the oil leakage in the big chamber of clip pile oil cylinder, so as to keep pressure, pile chuck to exist Piling oil cylinder effect is lower to be pressed into underground by frictional force by pile body.Because static pile press clip pile and pile driving pressure it is larger, to clip pile The pressure requirements of oil cylinder are high, somewhat pressure release then not clamping stake, cause piling to fail, and carried out using hydraulic lock etc. in prior art Pressurize, it is possible to there is certain pressure release, affects normal operation.

In prior art, Hydraulic System of Hydrostatic Pressure Pile Driver is divided into piling and clip pile hydraulic system and crane hydraulic system, and two System separates fuel feeding, and as the usage frequency of crane is very low, general only just use when hanging has the idleness of equipment Or the problem of the waste energy, and piling and clip pile hydraulic system generally require big flow piling, in the situation of piling speed Under, it is difficult to meet its traffic demand, large discharge pump need to be set, increase many costs.Crane in slinging work, to proposing stake Generally require to be adjusted according to operating mode with the speed of revolution, what in prior art, static pile press was subsidiary hangs a crane hydraulic pressure System speed governing is inconvenient.

Utility model content

In order to overcome the defect of prior art, this utility model to provide a kind of static pile press hydraulic control system, so as to Piling working performance is improved, it is convenient to adjust piling and the subsidiary speed regulation for hanging a crane.

In order to solve above-mentioned technical problem, this utility model provides a kind of static pile press hydraulic control system, including oil Case；The first hydraulic pump being connected with the fuel tank by oil pipe and the second hydraulic pump；Oil-in passes through oil pipe and first liquid First check valve of press pump outlet connection；Oil-in is connected with the oil-out of first check valve by oil pipe, two work Hydraulic fluid port is connected with the rodless cavity and rod chamber of clip pile oil cylinder respectively by oil pipe, and oil return opening is connected with the fuel tank by oil pipe First reversal valve；Oil-in is connected with the oil-out of first check valve by oil pipe, and two actuator ports are by oil pipe point It is not connected with the rodless cavity and rod chamber of piling oil cylinder, the second reversal valve that oil return opening is connected with the fuel tank by oil pipe；Enter The second check valve that hydraulic fluid port is connected with second hydraulic pump outlet by oil pipe；It is connected in parallel, respectively the hydraulic pressure of crane 3rd reversal valve of rotary motor fuel feeding, is the 4th reversal valve for rolling up poplar hydraulic motor fuel feeding, is the 5th of amplitude oil cylinder fuel feeding the Reversal valve, and for the 6th reversal valve of boom frame telescopic hydraulic drive mechanism fuel feeding；With the 3rd reversal valve, the 4th reversal valve, The foot valve of the 5th reversal valve and the 6th reversal valve downlink connection, the foot valve are used for adjusting the shunting stream of the second hydraulic pump Amount；The oil-in of the 3rd reversal valve, the 4th reversal valve, the 5th reversal valve and the 6th reversal valve passes through oil pipe and described second The oil-out connection of check valve, oil return opening are connected with the flowline of first check valve.

In order to solve to avoid clip pile oil cylinder pressure release in operation process, the technical problem of stable clip pile pressure, used as entering one Step improved technology scheme, the static pile press hydraulic control system that this utility model is provided, also with oil-in and the piling The rodless cavity oil inlet pipe connection of oil cylinder, the 3rd check valve that oil-out is connected with the rodless cavity oil inlet pipe of the clip pile oil cylinder；Enter Hydraulic fluid port is connected with the first actuator port of first reversal valve by oil pipe, and oil-out passes through oil pipe and the clip pile oil cylinder Rodless cavity and the hydraulic control one-way valve of the 3rd one-way valved outlet connection；Connect with the flowline of first actuator port of the first reversal valve The first overflow valve for connecing；The control port of the hydraulic control one-way valve passes through oil pipe and second actuator port of the first reversal valve Flowline connects.

As further improved technology scheme, the static pile press hydraulic control system that this utility model is provided, described the One hydraulic pump and the second hydraulic pump are unidirectional volume adjustable hydraulic pump.

Used as further improved technology scheme, the static pile press hydraulic control system that this utility model is provided is and described The flowline of two actuator port of the second reversal valve connection further respectively has the second overflow valve and the 3rd overflow valve.

As the static pile press hydraulic control system that further improved technology scheme, this utility model are provided, also have The 4th overflow being connected in parallel with the 3rd reversal valve, the 4th reversal valve, the 5th reversal valve, the 6th reversal valve and foot valve Valve.

As the static pile press hydraulic control system that further improved technology scheme, this utility model are provided, also have With the 7th reversal valve of second reversal valve downlink connection.

In the case where not conflicting, above-mentioned improved technology scheme can be implemented alone or in combination.

The static pile press hydraulic control system that this utility model is provided, the 3rd reversal valve 10, the 4th reversal valve the 11, the 5th , for being connected in parallel, the 4th overflow valve 23 is used for controlling respectively for reversal valve 12, the 6th reversal valve 13, foot valve 14, the 4th overflow valve 23 The input pressure of reversal valve and foot valve 14, foot valve 14 can be used for the hydraulic pressure for flowing through each reversal valve when adjusting crane job Oil mass, during effectively solving crane job, each course of action needs the technical problem of speed governing；Foot valve 14 can also adjust second Hydraulic pump 3 enters the The hydraulic oil of piling and clip pile hydraulic system, makes the first hydraulic pump 2 and the second hydraulic pump 3 with parallel connection can be Piling and clip pile hydraulic system fuel feeding, improve working performance.

Description of the drawings

Accompanying drawing is used for providing and further understanding to of the present utility model, constitutes the part of the application, but do not constitute it is right Improper restriction of the present utility model.In the accompanying drawings：

Fig. 1 is embodiment static pile press hydraulic control system schematic diagram.

Specific embodiment

Below in conjunction with the accompanying drawings embodiment of the present utility model is described in further detail.

Static pile press hydraulic control system as shown in Figure 1, is divided into piling and clip pile hydraulic system and crane hydraulic pressure System.Piling and clip pile hydraulic system include fuel tank 1, and the first hydraulic pump 2 is connected with fuel tank 1 by oil pipe, and the first hydraulic pump 2 is Unidirectional volume adjustable hydraulic pump；The oil-in of the first check valve 4 is connected with the outlet of the first hydraulic pump 2 by oil pipe, the first reversal valve 7 For the three position four-way directional control valve of regulating flow quantity, the oil-in of the first reversal valve 7 is by oil pipe and the oil-out of the first check valve 4 Connection, two actuator ports be connecteds with the rodless cavity and rod chamber of clip pile oil cylinder 5 respectively by oil pipe, oil return opening pass through oil pipe and Fuel tank 1 connects；Second reversal valve 8 and the 7th reversal valve 24 are connected in parallel, and their oil-in passes through oil pipe and the first check valve 4 Oil-out connection, two actuator ports are connected with the rodless cavity and rod chamber of piling oil cylinder 6 respectively by oil pipe, and oil return opening is logical Cross oil pipe to be connected with fuel tank 1, the flowline of the second reversal valve 8 and the 7th reversal valve 24 liang of actuator ports connection further respectively has the Two overflow valves 21 and the 3rd overflow valve 22；Rodless cavity oil-feed of the oil-in of the 3rd check valve 19 by oil pipe and piling oil cylinder 6 Pipe connects, and the oil-out of the 3rd check valve 19 is connected with the rodless cavity oil inlet pipe of clip pile oil cylinder 5 by oil pipe；Hydraulic control one-way valve 20 Oil-in be connected with the first actuator port of the first reversal valve 7 by oil pipe, nothing of the oil-out by oil pipe and clip pile oil cylinder 5 The outlet connection of rod cavity and the 3rd check valve 19；The flowline of 7 first actuator port of the first overflow valve 21 and the first reversal valve connects Connect；The control port of hydraulic control one-way valve 20 is connected with the flowline of 7 second actuator port of the first reversal valve by oil pipe.

Crane hydraulic system includes fuel tank 1, and the second hydraulic pump 3 is connected with fuel tank by oil pipe, and the second hydraulic pump 3 is single To volume adjustable hydraulic pump, the oil-in of the second check valve 9 is connected with the outlet of the second hydraulic pump 3 by oil pipe；3rd reversal valve 10 Oil-in be connected with the oil-out of the second check valve 9, two actuator ports of the 3rd reversal valve 10 hydraulic pressure respectively with crane The two hydraulic fluid ports connection of rotary motor 15, the oil-in of the 4th reversal valve 11 are connected with the oil-out of the second check valve 9, the 4th commutation Two actuator ports of valve 11 are connected with two hydraulic fluid ports of the volume poplar hydraulic motor 16 of crane respectively, the oil-in of the 5th reversal valve 12 Be connected with the oil-out of the second check valve 9, two actuator ports of the 5th reversal valve 12 respectively with the amplitude oil cylinder 17 of crane Rodless cavity and rod chamber connection, the oil-in of the 6th reversal valve 13 are connected with the oil-out of the second check valve 9, the 6th reversal valve 13 Two actuator ports be connected with two hydraulic fluid ports of the boom frame telescopic hydraulic motor 18 of crane respectively, the oil-in of foot valve 14 and The oil-out connection of two check valves 9, foot valve 14 are used for adjusting the bypass flow of second hydraulic pump 3, and the 4th overflow valve 23 enters Hydraulic fluid port is connected with the oil-out of the second check valve 9, and the 3rd reversal valve 10, the 4th reversal valve 11, the 5th reversal valve 12 and the 6th are changed To the oil return opening of valve 13, and the oil-out of foot valve 14, the 4th overflow valve 23 is fuel-displaced with the second check valve 9 by oil pipe Mouth connection；3rd reversal valve 10, the 4th reversal valve 11, the 5th reversal valve 12, the 6th reversal valve 13, foot valve 14, the 4th overflow Valve 23 is to be connected in parallel.

Operation principle：3rd reversal valve 10, the 4th reversal valve 11, the 5th reversal valve 12, the 6th reversal valve 13, foot valve 14th, for being connected in parallel, the 4th overflow valve 23 is used for controlling the input pressure of each reversal valve and foot valve 14, foot the 4th overflow valve 23 Step on valve 14 can be used for adjust crane job when, flow through the The hydraulic oil of each reversal valve, for example：Foot valve 14 can be stepped on by foot Displacement controlling hydraulic oil from the amount of flowing away of foot valve 14, and then control the liquid into corresponding reversal valve during crane job Force feed flow, controls the speed of crane action with this, when needing to slow down, it is only necessary to by 14 pedal pine one of foot valve Point, when needing to accelerate speed, it is only necessary to 14 pedal of foot valve is floored, you can realize maximal rate hoisting operation, effectively When solving crane job, each course of action needs the technical problem of speed governing；Foot valve 14 can also adjust the second hydraulic pump 3 and enter Enter the hydraulic fluid flow rate of piling and clip pile hydraulic system, make the first hydraulic pump 2 and 3 parallel connection of the second hydraulic pump be piling and clip pile liquid Pressure system fuel feeding, improves working performance.

When piling and clip pile hydraulic system operation, rodless cavity oil-feed of first reversal valve 7 to clip pile oil cylinder 5 is manipulated first, Rod chamber oil return, the stake for making the clamping of clip pile oil cylinder 5 residence to be pressed；Then the second reversal valve 8 or/and the 7th reversal valve 24 is manipulated, Make hydraulic oil enter the rodless cavity of piling oil cylinder 6, carry out piling and bury operation.Due to the operating pressure of piling oil cylinder 6 during work Inherently slightly larger than the operating pressure of clip pile oil cylinder 5, so when piling operation is carried out, be connected with 6 rodless cavity of piling oil cylinder Pipeline in addition to 6 fuel feeding of piling oil cylinder, also by rodless cavity fuel feeding from the 3rd check valve 19 to clip pile oil cylinder 5, so as to effective Keep the rodless cavity of clip pile oil cylinder not fall pressure, obtain good piling efficiency.The pressure of the control clip pile of hydraulic control one-way valve 20 oil cylinder 5 It is unlikely too high, play safeguard protection effect.

Obviously, this utility model is not limited to above preferred implementation, can also be in this utility model claim and explanation In the spirit that book is limited, the conversion and improvement of various ways is carried out, same technical problem, and technology expected from obtaining can be solved Effect, therefore do not repeat.One of ordinary skill in the art can from this utility model disclosure directly or associate it is all Scheme, as long as within the spirit that claim is limited, fall within protection domain of the present utility model.

Claims (6)

1. a kind of static pile press hydraulic control system, it is characterised in that：Including fuel tank（1）；By oil pipe and the fuel tank（1） First hydraulic pump of connection（2）With the second hydraulic pump（3）；Oil-in passes through oil pipe and first hydraulic pump（2）Outlet connection The first check valve（4）；Oil-in passes through oil pipe and first check valve（4）Oil-out connection, two actuator ports lead to Cross oil pipe respectively with clip pile oil cylinder（5）Rodless cavity and rod chamber connection, oil return opening passes through oil pipe and the fuel tank（1）Connection First reversal valve（7）；Oil-in passes through oil pipe and first check valve（4）Oil-out connection, two actuator ports pass through Oil pipe respectively with piling oil cylinder（6）Rodless cavity and rod chamber connection, oil return opening passes through oil pipe and the fuel tank（1）The of connection Two reversal valves（8）；Oil-in passes through oil pipe and second hydraulic pump（3）Second check valve of outlet connection（9）；It is in parallel to connect Connect, respectively the hydraulic rotary motor of crane（15）3rd reversal valve of fuel feeding（10）, it is volume poplar hydraulic motor（16）Fuel feeding The 4th reversal valve（11）, it is amplitude oil cylinder（17）5th reversal valve of fuel feeding（12）, and be boom frame telescopic hydraulic drive mechanism （18）6th reversal valve of fuel feeding（13）；With the 3rd reversal valve（10）, the 4th reversal valve（11）, the 5th reversal valve（12）With 6th reversal valve（13）And the foot valve of downlink connection（14）, the foot valve（14）For adjusting the second hydraulic pump（3）Shunting Flow；3rd reversal valve（10）, the 4th reversal valve（11）, the 5th reversal valve（12）With the 6th reversal valve（13）Oil-in By oil pipe and second check valve（9）Oil-out connection, oil return opening and first check valve（4）Flowline connect Connect.

2. static pile press hydraulic control system according to claim 1, it is characterised in that：Also have oil-in with it is described Piling oil cylinder（6）The connection of rodless cavity oil inlet pipe, oil-out and the clip pile oil cylinder（5）Rodless cavity oil inlet pipe connection the 3rd Check valve（19）；Oil-in passes through oil pipe and first reversal valve（7）The first actuator port connection, oil-out pass through oil pipe With the clip pile oil cylinder（5）Rodless cavity and the 3rd check valve（19）The hydraulic control one-way valve of outlet connection（20）；With described first Reversal valve（7）First overflow valve of the flowline connection of the first actuator port（21）；The hydraulic control one-way valve（20）Control oil Mouth passes through oil pipe and first reversal valve（7）The flowline connection of the second actuator port.

3. static pile press hydraulic control system according to claim 1, it is characterised in that：First hydraulic pump（2） With the second hydraulic pump（3）For unidirectional volume adjustable hydraulic pump.

4. static pile press hydraulic control system according to claim 1, it is characterised in that：With second reversal valve （8）The flowline of two actuator ports connection further respectively has the second overflow valve（21）With the 3rd overflow valve（22）.

5. static pile press hydraulic control system according to claim 1, it is characterised in that：Also with changing with the described 3rd To valve（10）, the 4th reversal valve（11）, the 5th reversal valve（12）, the 6th reversal valve（13）And foot valve（14）For being connected in parallel Four overflow valves（23）.

6. static pile press hydraulic control system according to claim 1, it is characterised in that：Also with changing with described second To valve（8）And the 7th reversal valve of downlink connection（24）.