CN101191507A - Hydraulic system for tunneling machine - Google Patents

Hydraulic system for tunneling machine Download PDF

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Publication number
CN101191507A
CN101191507A CN 200710159117 CN200710159117A CN101191507A CN 101191507 A CN101191507 A CN 101191507A CN 200710159117 CN200710159117 CN 200710159117 CN 200710159117 A CN200710159117 A CN 200710159117A CN 101191507 A CN101191507 A CN 101191507A
Authority
CN
China
Prior art keywords
valve
proportional
hydraulic
pressure
power
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
CN 200710159117
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Chinese (zh)
Inventor
崔闯
汪清波
孙晓明
刘桂颖
付金壁
王德仁
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.)
SHENYANG MINING MACHINERY (GROUP) CO Ltd
Original Assignee
SHENYANG MINING MACHINERY (GROUP) 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 SHENYANG MINING MACHINERY (GROUP) CO Ltd filed Critical SHENYANG MINING MACHINERY (GROUP) CO Ltd
Priority to CN 200710159117 priority Critical patent/CN101191507A/en
Publication of CN101191507A publication Critical patent/CN101191507A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a development machine hydraulic system, belonging to an open type hydraulic system. The invention is characterized in that: a constant power loading sensitive axial plunger variable displacement pump provided with pressure cut-off function is connected with a six-way proportional multichannel conversion valve with functions of pressure compensation and load sensing through a pipe; various plate valves are arranged inside the six-way proportional mutlichannel conversion valve and respectively connected with and control various actuators; pressure compensation valves are respectively connected on oil inlet pipes of various plate valves and used for adjusting flow values of various plate valves; a pilot opening of the proportional multichannel valve is connected with a manual proportional pilot valve. The whole system has the function of power adaptation and solves the problems of gross leak, large power loss, low pressure, high temperature rise of oils and low reliability of a hydraulic system consisting of a gear pump and a manual multiple-way valve. The invention has the advantages of improvement of power/weight ratio of the hydraulic system, more comfortable and safer operation of drivers due to a proportional pilot handle, more precise action and great improvement of reliability.

Description

A kind of development machine hydraulic system
Technical field
The invention belongs to a kind of hydraulic system that is applied on the development machine.
Background technique
Domestic existing development machine mostly is the open system of the manual multi-path reversing valve control of gear pump driven greatly with hydraulic system.This kind system bulk is bigger, and under the general narrow and small situation in mining equipment space, assembling difficulty is big.This kind system is owing to be gear pump driven in addition, and pressure is lower, causes the driving force deficiency easily, also has this system leak amount relatively large, and efficient and reliability are also relatively low.
Summary of the invention
The purpose of this invention is to provide a kind of development machine hydraulic system, it is big to have a power-weight ratio, through-flow big, leaks low, the efficient height, level of integration high with have characteristics such as power adaptive functions.
A kind of development machine hydraulic system, belong to open type hydraulic system, the six logical type proportional multi-path reversing valves that it is characterized in that having the responsive shaft orientation plunger variable pump of constant power load of pressure cut off function and having pressure compensation and load sensing function are by pipeline connection, each plate valve is set in six logical type proportional multi-path reversing valves to be connected respectively and controls each actuator, and there is pressure-compensated valve to be connected to separately on the plate valve in-line, be used for adjusting the flow value of each plate valve, the pilot control opening of proportional multi-path valve links to each other with manual proportional pilot valve.
The control mouth of guide's handle is connected with the pilot control opening of proportional multi-path reversing valve, the pressure oil of guide's handle is the low pressure oil that proportional multi-path reversing valve provides, driver's direct control guide handle is adjusted direction and the flow size that changes multiple directional control valve, six logical type proportional multi-path reversing valves pass to coupled power ecad plunger variable pump to flow and pressure demand signal simultaneously, the variable displacement pump real-time variable, to guarantee that adjusted discharge capacity just in time satisfies the demand of load, does not have power dissipation.But when driving a plurality of executive component, for fear of each loop load difference causes when action time the flow major part be diverted to the get on generation of this phenomenon of the lower loop of load, in six logical type proportional multi-path reversing valves, add pressure-compensated valve, so just can carry out pressure compensation automatically, the distribution of dependable flow and load difference are irrelevant.
Native system is compared with the system that manual multiple-way valve constitutes with the gear pump that development machine extensively adopts at present, have superior power adaptive functions, the power output of pump does not have power dissipation directly by the loading demand decision, has improved the reliability of system when saving the energy.Because native system is driven by plunger pump, and the output pressure ratio gear pump exceeds a lot, has improved power-weight ratio, and the proportion pilot handle makes driver's operation more comfortable, safety is moved also more accurate in addition.Be applied on the development machine, it is comfortable to make development machine have an operation, and control is precisely saved the energy, and outputting power is powerful, reduces oil liquid temperature, characteristics such as reliability height.
Description of drawings
Fig. 1 is that the hydraulic system parts are provided with schematic representation;
Embodiment
Development machine hydraulic system of the present invention, comprise pump and pump stroking mechanism, multiple directional control valve and hydraulic actuator, see Fig. 1, it is characterized in that having the inlet port S mouth of the responsive shaft orientation plunger variable pump 2 of constant power load (being called for short variable displacement pump 2) of pressure cut off function, the drain tap T1 mouth of variable displacement pump 2 connects with fuel tank 1 by pipeline, directly be connected with the Ls mouth of six logical type proportional multi-path reversing valves 4 with pump stroking mechanism 3 outlets that variable displacement pump 2 is connected by pipeline X1, the P1 mouth of six logical type proportional multi-path reversing valves 4 is connected by pipeline with the A mouth of variable displacement pump 2, the leakage hydraulic fluid port Y mouth of six logical proportional multi-path reversing valves 4 connects by pipeline and fuel tank 1, six logical type proportional multi-path reversing valve 4 one ends link to each other with the P2 mouth pipeline of proportion pilot handle 7 with the X2 mouth that pump stroking mechanism 3 communicates, the outlet T3 of fuel tank 1 connects guide's handle 7, two pressure-compensated valves 6 that are provided with in the six logical type proportional multi-path reversing valves 4 are connected on the in-line of plate valve separately, the liquid outlet a7 of guide's handle 7, b7, a8, b8 is connected with pipeline with the six plate valve hydraulic control mouth a7 ' b7 ' a8 ' b8 ' that lead in the type proportional multi-path reversing valves 4.A1, the B1 of six logical type proportional multi-path reversing valves 4, A2, B2 mouth are linked to each other by the connection mouth of pipeline with each hydraulic actuator 5 of needs control respectively, and the oil return inlet T 2 of six logical type proportional multi-path reversing valves 4 communicates with fuel tank 1 pipeline.Design needs in the pressure cut off value size of pump and the system Daheng power setting can realize that the pressure compensation value that each actuator 5 loop needs can be by adjusting pressure-compensated valve 6 realizations with the size of flow by adjusting screw and the pump stroking mechanism 3 of adjusting pressure-compensated valve 6 self.
Hydraulic system used unit among the present invention can be ordered to factory by functional requirement.Above-mentioned variable displacement pump 2 requires to have the pressure cut off function, and when promptly the force value of pump reached the pressure cut off value of setting, the output flow of pump was zero, and it is constant that pressure is kept setting value.The realization of load sensing function is to realize by the variable valve group of proportional multi-path reversing valve and pump is common, proportional multi-path reversing valve connects the variable valve group of the load pressure signal value being passed to pump by pipeline, the pressure of pump variable valve group action control pump and flow output and load matched.
For example, when driver operation proportion pilot valve events, the openings of sizes of pilot valve has determined the size of delivery pressure, and then determined the flow of the plate valve of proportional multi-path pilot valve correspondence, the effect of pressure-compensated valve is to guarantee still to guarantee in load variations that the flow of plate valve is constant in the plate valve, the pressure of load end senses in the pump stroking mechanism by pipeline and proportional multi-path reversing valve, the pump stroking mechanism has so just been realized the power adaptive functions of system by with the comparison of setting value and then to adjust pressure consistent with flow output and load request.

Claims (1)

1. development machine hydraulic system, belong to open type hydraulic system, the six logical type proportional multi-path reversing valves that it is characterized in that having the responsive shaft orientation plunger variable pump of constant power load of pressure cut off function and having pressure compensation and load sensing function are by pipeline connection, each plate valve is set in six logical type proportional multi-path reversing valves to be connected respectively and controls each actuator, and there is pressure-compensated valve to be connected to separately on the plate valve in-line, be used for adjusting the flow value of each plate valve, the pilot control opening of proportional multi-path valve links to each other with manual proportional pilot valve.
CN 200710159117 2007-12-21 2007-12-21 Hydraulic system for tunneling machine Pending CN101191507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710159117 CN101191507A (en) 2007-12-21 2007-12-21 Hydraulic system for tunneling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710159117 CN101191507A (en) 2007-12-21 2007-12-21 Hydraulic system for tunneling machine

Publications (1)

Publication Number Publication Date
CN101191507A true CN101191507A (en) 2008-06-04

Family

ID=39486682

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200710159117 Pending CN101191507A (en) 2007-12-21 2007-12-21 Hydraulic system for tunneling machine

Country Status (1)

Country Link
CN (1) CN101191507A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139830A (en) * 2011-01-27 2011-08-03 天津山河装备开发有限公司 Load-sensitive double-power control device applicable to crawler crane
CN102251996A (en) * 2011-07-05 2011-11-23 天津柳工机械有限公司 Engineering mechanical load sensing hydraulic system
CN102966630A (en) * 2012-11-16 2013-03-13 无锡汇虹机械制造有限公司 Detection method for constant-flow oil return channel
CN103423225A (en) * 2013-07-22 2013-12-04 四川泛水基电液机械有限责任公司 Low-energy-consumption hydraulic open-type walking system and control method
CN103807240A (en) * 2012-11-14 2014-05-21 柳州柳工挖掘机有限公司 Priority system and priority device on pilot hydraulic control oil circuit
CN103939403A (en) * 2014-04-29 2014-07-23 三一重通机械有限公司 Load-sensitive hydraulic system and bulldozer
CN104061197A (en) * 2014-06-05 2014-09-24 安徽博一流体传动股份有限公司 Hydraulic system for loading machine
CN104179741A (en) * 2014-08-08 2014-12-03 徐州五洋科技股份有限公司 Load-sensing-controlled hydraulic system
CN104179734A (en) * 2014-08-27 2014-12-03 浙江德泰机电工程有限公司 Constant-pressure control device and method for hydraulic pump
CN104514765A (en) * 2013-09-26 2015-04-15 陕西中大机械集团有限责任公司 Multi-way valve hydraulic system for controlling paver hydraulic auxiliary system
CN105347193A (en) * 2015-11-23 2016-02-24 潍柴动力股份有限公司 Constant-power and variable-power point control system and method for crane

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139830A (en) * 2011-01-27 2011-08-03 天津山河装备开发有限公司 Load-sensitive double-power control device applicable to crawler crane
CN102139830B (en) * 2011-01-27 2012-11-07 天津山河装备开发有限公司 Load-sensitive double-power control device applicable to crawler crane
CN102251996A (en) * 2011-07-05 2011-11-23 天津柳工机械有限公司 Engineering mechanical load sensing hydraulic system
CN103807240A (en) * 2012-11-14 2014-05-21 柳州柳工挖掘机有限公司 Priority system and priority device on pilot hydraulic control oil circuit
CN102966630A (en) * 2012-11-16 2013-03-13 无锡汇虹机械制造有限公司 Detection method for constant-flow oil return channel
CN103423225B (en) * 2013-07-22 2015-10-28 四川泛水基电液机械有限责任公司 A kind of low energy consumption hydraulic open type running gear and controlling method
CN103423225A (en) * 2013-07-22 2013-12-04 四川泛水基电液机械有限责任公司 Low-energy-consumption hydraulic open-type walking system and control method
CN104514765A (en) * 2013-09-26 2015-04-15 陕西中大机械集团有限责任公司 Multi-way valve hydraulic system for controlling paver hydraulic auxiliary system
CN104514765B (en) * 2013-09-26 2018-02-23 陕西中大机械集团有限责任公司 For controlling the banked direction control valves hydraulic system of Paver Hydraulic accessory system
CN103939403A (en) * 2014-04-29 2014-07-23 三一重通机械有限公司 Load-sensitive hydraulic system and bulldozer
CN104061197A (en) * 2014-06-05 2014-09-24 安徽博一流体传动股份有限公司 Hydraulic system for loading machine
CN104179741A (en) * 2014-08-08 2014-12-03 徐州五洋科技股份有限公司 Load-sensing-controlled hydraulic system
CN104179734A (en) * 2014-08-27 2014-12-03 浙江德泰机电工程有限公司 Constant-pressure control device and method for hydraulic pump
CN105347193A (en) * 2015-11-23 2016-02-24 潍柴动力股份有限公司 Constant-power and variable-power point control system and method for crane

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Open date: 20080604