CN102278331A - Multi-way directional valve for lorry-mounted crane and control method thereof - Google Patents

Multi-way directional valve for lorry-mounted crane and control method thereof Download PDF

Info

Publication number
CN102278331A
CN102278331A CN201110169262A CN201110169262A CN102278331A CN 102278331 A CN102278331 A CN 102278331A CN 201110169262 A CN201110169262 A CN 201110169262A CN 201110169262 A CN201110169262 A CN 201110169262A CN 102278331 A CN102278331 A CN 102278331A
Authority
CN
China
Prior art keywords
valve
lorry
directional control
mounted crane
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201110169262A
Other languages
Chinese (zh)
Inventor
程磊
刘�东
赵龙辉
赵娇阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou XCMG Truck Mounted Crane Co Ltd
Original Assignee
Xuzhou XCMG Truck Mounted Crane Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuzhou XCMG Truck Mounted Crane Co Ltd filed Critical Xuzhou XCMG Truck Mounted Crane Co Ltd
Priority to CN201110169262A priority Critical patent/CN102278331A/en
Publication of CN102278331A publication Critical patent/CN102278331A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

The invention relates to a multi-way directional valve for a lorry-mounted crane and a control method thereof, belonging to multi-way valves for engineering machinery and control methods thereof. A first secondary pressure-limiting valve is connected with a load opening A1 and a loading opening B1 of a rotary reversing valve, a first main overflow valve is connected with an oil pump opening P1 of the multi-way directional valve for the lorry-mounted crane, and a second main overflow valve is connected with an oil pump opening P2 of the multi-way directional valve for the lorry-mounted crane; a first load retaining valve, a second load retaining valve and a third load retaining valve are respectively connected with oil inlets of the rotary reversing valve, a flexible reversing valve and a luffing reversing valve, and a check valve is connected with an oil inlet of a hoisting double-pump confluence reversing valve; and the rotary reversing valve is connected in series with the hoisting double-pump confluence reversing valve, and the flexible reversing valve and the luffing reversing valve are connected in parallel and then are connected in series with the hoisting double-pump confluence reversing valve. The multi-way directional valve for the lorry-mounted crane, disclosed by the invention, has the advantages that: the conversion between high speed and slow speed can be realized on a hoisting unit according to the difference of operating conditions by aiming to the difference of characteristics of each moving mechanism of the lorry-mounted crane, thus the work efficiency is improved and the micromotion performance is also taken into account.

Description

Lorry-mounted crane is with multiple directional control valve and controlling method
Technical field
The present invention relates to a kind of engineering machinery with multi-way valve and controlling method, particularly a kind of lorry-mounted crane is with multiple directional control valve and controlling method.
Background technique
Multiple directional control valve is the combination brake switch and proporting based on plural selector valve, according to the requirement of different hydraulic systems, also relief valve, one-way valve etc. also can be combined in the valve, is mainly used on the various engineering machinery, carries out the centralized control of a plurality of executive components.
General lorry-mounted crane multiple directional control valve, each connection is three bit manipulations, and has only a filler opening, can only use single metering pump fuel feeding, this causes: 1, rotating at a slow speed, function that stable operation requires rapidly and efficiently to be moved with flexible and luffing produces contradiction, can not realize simultaneously; 2, hoist motor can only be operated under the speed, can not take into account rapidly and efficiently the requirement with the fine motion location simultaneously; 3, car load can only move by simply connected, and car load efficient is too low.If use the variable displacement pump fuel feeding, it is too high that car load increases cost, has a strong impact on the cost performance of lorry-mounted crane.
Summary of the invention
The objective of the invention is to provide a kind of lorry-mounted crane with multiple directional control valve and controlling method, solve existing lorry-mounted crane and can not use the double pump fuel feeding, can not realize the part body interlock, can not realize the problem of elevator double speed action.
The object of the present invention is achieved like this: this lorry-mounted crane includes the first main relief valve, the first load maintaining valve, slewing directional control valve, first level pressure-limit valve, second subprime pressure-limit valve, one-way valve, elevator double pump interflow selector valve, flexible selector valve, the second load maintaining valve, luffing selector valve, the 3rd load maintaining valve, the second main relief valve with multiple directional control valve;
First time the level pressure-limit valve is connected with the B1 mouth with the load port A1 mouth of slewing directional control valve, the second subprime pressure-limit valve is connected with the B2 mouth with the load port A2 mouth of elevator double pump interflow selector valve, the first main relief valve is connected with multiple directional control valve P1 oil pump mouth with this lorry-mounted crane, and the second main relief valve is connected with multiple directional control valve P2 oil pump mouth with this lorry-mounted crane; The first load maintaining valve, the second load maintaining valve, the 3rd load maintaining valve are connected with the filler opening of slewing directional control valve, flexible selector valve, luffing selector valve respectively, and one-way valve is connected with the filler opening of elevator double pump interflow selector valve; Slewing directional control valve and elevator double pump interflow selector valve are connected in series with elevator double pump interflow selector valve after flexible selector valve 8 and luffing selector valve are connected in parallel for being connected in series.
Controlling method: this lorry-mounted crane elevator double pump interflow selector valve is five bit manipulations, and slewing directional control valve, flexible selector valve and luffing selector valve are three bit manipulations; This lorry-mounted crane adopts float amount metering pump to provide the pressure oil circuit for slewing directional control valve with multiple directional control valve P1 oil pump mouth; This lorry-mounted crane adopts big discharge capacity metering pump to provide the pressure oil circuit for stretch selector valve and luffing selector valve with multiple directional control valve P2 oil pump mouth; Elevator double pump interflow selector valve is double speed control, in the time of at a slow speed, the multiple directional control valve P1 oil pump mouth off-load of this lorry-mounted crane, P2 oil pump mouth provides pressure oil, in the time of fast, this lorry-mounted crane now collaborates with multiple directional control valve P1 oil pump mouth and the cause for gossip of P2 oil pump, is elevator double pump interflow selector valve fuel feeding jointly.
Beneficial effect: owing to adopted above-mentioned principle scheme, this lorry-mounted crane can adopt float amount metering pump to provide the pressure oil circuit for slewing directional control valve 3 with multiple directional control valve P1 oil pump mouth, and realization is turned round at a slow speed, stable operation; This lorry-mounted crane can adopt big discharge capacity metering pump to provide the pressure oil circuit for stretch selector valve and luffing selector valve with multiple directional control valve P2 oil pump mouth, and realization is flexible to be moved fast with luffing; Elevator double pump interflow selector valve can be realized double speed control, in the time of at a slow speed, the multiple directional control valve P1 oil pump mouth off-load of this lorry-mounted crane, P2 oil pump mouth provides pressure oil for elevator double pump interflow selector valve, in the time of fast, this lorry-mounted crane now collaborates with multiple directional control valve P1 oil pump mouth and the cause for gossip of P2 oil pump, is elevator double pump interflow selector valve fuel feeding jointly; Revolution and flexible can the interlock, revolution and luffing can link, and elevator can link with arbitrary motion mechanism.
Advantage: at each motion characteristic difference of lorry-mounted crane, this programme can be realized turning round at a slow speed, stable operation, the quick purpose of moving of flexible and luffing; The elevator connection can be realized fast and conversion at a slow speed according to the operating mode difference, has both improved working efficiency, has taken into account fretting performance simultaneously again; Revolution and flexible can the interlock, revolution and luffing can link, and elevator can link with arbitrary motion mechanism; Moderate cost has reduced the cost burden of complete machine.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Among the figure, 1, the first main relief valve; 2, the first load maintaining valve; 3, slewing directional control valve; 4, first level pressure-limit valve; 5, second subprime pressure-limit valve; 6, one-way valve; 7, elevator double pump interflow selector valve; 8, flexible selector valve; 9, the second load maintaining valve; 10, luffing selector valve; 11, the 3rd load maintaining valve; 12, the second main relief valve.
Embodiment
Embodiment 1: this lorry-mounted crane includes with multiple directional control valve: this lorry-mounted crane includes the first main relief valve 1, the first load maintaining valve 2, slewing directional control valve 3, second subprime pressure-limit valve 4, second subprime pressure-limit valve 5, one-way valve 6, elevator double pump interflow selector valve 7, flexible selector valve 8, the second load maintaining valve 9, luffing selector valve 10, the 3rd load maintaining valve 11 and the second main relief valve 12 with multiple directional control valve; First time level pressure-limit valve 4 is connected with the B1 mouth with the load port A1 mouth of slewing directional control valve 3, second subprime pressure-limit valve 5 is connected with the B2 mouth with the load port A2 mouth of elevator double pump interflow selector valve 7, the first main relief valve 1 is connected with multiple directional control valve P1 oil pump mouth with this lorry-mounted crane, and the second main relief valve 12 is connected with multiple directional control valve P2 oil pump mouth with this lorry-mounted crane; The first load maintaining valve 2, the second load maintaining valve 9, the 3rd load maintaining valve 11 are connected with the filler opening of slewing directional control valve 3, flexible selector valve 8, luffing selector valve 10 respectively, and one-way valve 6 is connected with the filler opening of elevator double pump interflow selector valve 7; Slewing directional control valve 3 collaborates selector valve 7 for being connected in series with the elevator double pump, is connected in series with elevator double pump interflow selector valve 7 after flexible selector valve 8 and luffing selector valve 10 are connected in parallel.
This lorry-mounted crane elevator double pump interflow selector valve 7 is five bit manipulations, slewing directional control valve 3, flexible selector valve 8 and luffing selector valve 10 are three bit manipulations, can adopt float amount metering pump for slewing directional control valve 3 provides the pressure oil circuit with multiple directional control valve P1 oil pump mouth, reach realize revolution at a slow speed, aim of stable operation; This lorry-mounted crane can adopt big discharge capacity metering pump for stretch selector valve 8 and luffing selector valve 10 provide the pressure oil circuit with multiple directional control valve P2 oil pump mouth, reaches to realize purpose flexible and that luffing moves fast; Elevator double pump interflow selector valve 7 can be realized double speed control, in the time of at a slow speed, the multiple directional control valve P1 oil pump mouth off-load of this lorry-mounted crane, P2 oil pump mouth provides pressure oil, in the time of fast, this lorry-mounted crane now collaborates with multiple directional control valve P1 oil pump mouth and the cause for gossip of P2 oil pump, is elevator double pump interflow selector valve fuel feeding jointly; Revolution and flexible can the interlock, revolution and luffing can link, and elevator can link with arbitrary motion mechanism.

Claims (2)

1. this lorry-mounted crane multiple directional control valve is characterized in that: this lorry-mounted crane includes the first main relief valve, the first load maintaining valve, slewing directional control valve, first level pressure-limit valve, second subprime pressure-limit valve, one-way valve, elevator double pump interflow selector valve, flexible selector valve, the second load maintaining valve, luffing selector valve, the 3rd load maintaining valve, the second main relief valve with multiple directional control valve;
First time the level pressure-limit valve is connected with the B1 mouth with the load port A1 mouth of slewing directional control valve, the second subprime pressure-limit valve is connected with the B2 mouth with the load port A2 mouth of elevator double pump interflow selector valve, the first main relief valve is connected with multiple directional control valve P1 oil pump mouth with this lorry-mounted crane, and the second main relief valve is connected with multiple directional control valve P2 oil pump mouth with this lorry-mounted crane; The first load maintaining valve, the second load maintaining valve, the 3rd load maintaining valve are connected with the filler opening of slewing directional control valve, flexible selector valve, luffing selector valve respectively, and one-way valve is connected with the filler opening of elevator double pump interflow selector valve; Slewing directional control valve and elevator double pump interflow selector valve are connected in series with elevator double pump interflow selector valve after flexible selector valve and luffing selector valve are connected in parallel for being connected in series.
2. this lorry-mounted crane is with the controlling method of multiple directional control valve, and it is characterized in that: this lorry-mounted crane elevator double pump interflow selector valve is five bit manipulations, and slewing directional control valve, flexible selector valve and luffing selector valve are three bit manipulations; This lorry-mounted crane adopts float amount metering pump to provide the pressure oil circuit for slewing directional control valve with multiple directional control valve P1 oil pump mouth; This lorry-mounted crane adopts big discharge capacity metering pump to provide the pressure oil circuit for stretch selector valve and luffing selector valve with multiple directional control valve P2 oil pump mouth; Elevator double pump interflow selector valve is double speed control, in the time of at a slow speed, the multiple directional control valve P1 oil pump mouth off-load of this lorry-mounted crane, P2 oil pump mouth provides pressure oil, in the time of fast, this lorry-mounted crane now collaborates with multiple directional control valve P1 oil pump mouth and the cause for gossip of P2 oil pump, is elevator double pump interflow selector valve fuel feeding jointly.
CN201110169262A 2011-06-22 2011-06-22 Multi-way directional valve for lorry-mounted crane and control method thereof Pending CN102278331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110169262A CN102278331A (en) 2011-06-22 2011-06-22 Multi-way directional valve for lorry-mounted crane and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110169262A CN102278331A (en) 2011-06-22 2011-06-22 Multi-way directional valve for lorry-mounted crane and control method thereof

Publications (1)

Publication Number Publication Date
CN102278331A true CN102278331A (en) 2011-12-14

Family

ID=45103973

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110169262A Pending CN102278331A (en) 2011-06-22 2011-06-22 Multi-way directional valve for lorry-mounted crane and control method thereof

Country Status (1)

Country Link
CN (1) CN102278331A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899588A (en) * 2014-01-17 2014-07-02 徐州徐工随车起重机有限公司 Lorry-mounted crane multi-way reversing device and straight arm lorry-mounted crane
CN105422530A (en) * 2014-10-30 2016-03-23 徐州重型机械有限公司 Pilot integrated multi-way valve group and crane
CN105443481A (en) * 2014-12-09 2016-03-30 徐州重型机械有限公司 Series-parallel crane multitandem valve and hydraulic system and crane
CN107504000A (en) * 2017-10-12 2017-12-22 徐州徐工随车起重机有限公司 A kind of lorry-mounted crane multi-way reversing device
CN111059087A (en) * 2019-12-23 2020-04-24 中联重科股份有限公司 Power distribution hydraulic system and crane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990352A (en) * 1974-10-11 1976-11-09 Kabushiki Kaisha Komatsu Seisakusho Control valve
CN2844532Y (en) * 2005-07-19 2006-12-06 四川长江液压件有限责任公司 Multi-path switching valve of hydraulic crane
CN201228685Y (en) * 2008-05-26 2009-04-29 长治清华机械厂 Hydraulic system of lorry-mounted crane
CN202108803U (en) * 2011-06-22 2012-01-11 徐州徐工随车起重机有限公司 Multi-way reversing valve for lorry-mounted crane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990352A (en) * 1974-10-11 1976-11-09 Kabushiki Kaisha Komatsu Seisakusho Control valve
CN2844532Y (en) * 2005-07-19 2006-12-06 四川长江液压件有限责任公司 Multi-path switching valve of hydraulic crane
CN201228685Y (en) * 2008-05-26 2009-04-29 长治清华机械厂 Hydraulic system of lorry-mounted crane
CN202108803U (en) * 2011-06-22 2012-01-11 徐州徐工随车起重机有限公司 Multi-way reversing valve for lorry-mounted crane

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899588A (en) * 2014-01-17 2014-07-02 徐州徐工随车起重机有限公司 Lorry-mounted crane multi-way reversing device and straight arm lorry-mounted crane
CN105422530A (en) * 2014-10-30 2016-03-23 徐州重型机械有限公司 Pilot integrated multi-way valve group and crane
CN105443481A (en) * 2014-12-09 2016-03-30 徐州重型机械有限公司 Series-parallel crane multitandem valve and hydraulic system and crane
CN105443481B (en) * 2014-12-09 2018-01-12 徐州重型机械有限公司 Series parallel type crane banked direction control valves, hydraulic system and crane
CN107504000A (en) * 2017-10-12 2017-12-22 徐州徐工随车起重机有限公司 A kind of lorry-mounted crane multi-way reversing device
CN107504000B (en) * 2017-10-12 2024-01-02 徐州徐工随车起重机有限公司 Multi-way reversing device of lorry-mounted crane
CN111059087A (en) * 2019-12-23 2020-04-24 中联重科股份有限公司 Power distribution hydraulic system and crane
CN111059087B (en) * 2019-12-23 2021-07-30 中联重科股份有限公司 Power distribution hydraulic system and crane

Similar Documents

Publication Publication Date Title
CN103244496B (en) Rotary control valve group, revolution hydraulic control system and hoist
CN104214150B (en) Double-hoist hydraulic control system and there is its engineering machinery
CN202108803U (en) Multi-way reversing valve for lorry-mounted crane
CN103267034A (en) Load sensitive hydraulic system with compensation valve energy recovery function
CN102278331A (en) Multi-way directional valve for lorry-mounted crane and control method thereof
CN203754318U (en) Crane winching hydraulic system and crane
CN102536932A (en) Compression refuse collector and hydraulic system thereof
CN104071709B (en) A kind of crane controls system and crane with the fixing stepless luffing of auxiliary
CN102345749A (en) Flow collecting valve and crane hydraulic control system with the same
CN104806582B (en) A kind of hydraulic system at engineering machinery Based Intelligent Control interflow
CN103899588B (en) Lorry-mounted crane multi-way reversing device and straight-arm lorry-mounted crane
CN102734501B (en) Converging multipath valve and crane hydraulic system
CN103303801A (en) Hydraulic confluence control system for truck crane
CN103883573A (en) Hydraulic boom control system and harbor handling machine
CN203582302U (en) Control valve bank, hydraulic control system and truck crane
CN202418066U (en) Hydraulic system and concrete equipment
CN203717509U (en) Lorry-mounted crane multi-way reversing device and straight-arm lorry-mounted crane
CN204553368U (en) A kind of hydraulic system of engineering machinery intelligent control interflow
CN108179781A (en) Loader hydraulic control system
CN203948359U (en) The hydraulic system of engineering machinery and engineering machinery
CN204082721U (en) A kind of fluid pressure drive device of lifting machine
CN103470556A (en) Multi-way valve converging hydraulic system and land leveler
CN203868013U (en) Multi-tandem valve and hydraulic control system
CN103511379B (en) A kind of crane, hydraulic system and switching valve
CN204284053U (en) For guide's oil circuit relief arrangement and the pilot hydraulic control system of virtual wall function

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20111214