[go: up one dir, main page]

CN101435451A - Movable arm potential energy recovery method and apparatus of hydraulic excavator - Google Patents

Movable arm potential energy recovery method and apparatus of hydraulic excavator Download PDF

Info

Publication number
CN101435451A
CN101435451A CNA2008101438747A CN200810143874A CN101435451A CN 101435451 A CN101435451 A CN 101435451A CN A2008101438747 A CNA2008101438747 A CN A2008101438747A CN 200810143874 A CN200810143874 A CN 200810143874A CN 101435451 A CN101435451 A CN 101435451A
Authority
CN
China
Prior art keywords
potential energy
energy
generator
solenoid valve
hydraulic
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.)
Granted
Application number
CNA2008101438747A
Other languages
Chinese (zh)
Other versions
CN101435451B (en
Inventor
黄中华
刘少军
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.)
Central South University
Original Assignee
Central South University
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 Central South University filed Critical Central South University
Priority to CN2008101438747A priority Critical patent/CN101435451B/en
Publication of CN101435451A publication Critical patent/CN101435451A/en
Application granted granted Critical
Publication of CN101435451B publication Critical patent/CN101435451B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

The invention discloses a method for recovering potential energy of a movable arm of a hydraulic digging machine and a device thereof. The method comprises the following steps: firstly, the potential energy is stored through an energy accumulator in the retraction process of a hydraulic cylinder; and secondly the stored energy in the energy accumulator drives a generator to generate electricity, thereby realizing the recovery of the potential energy of the movable arm of the hydraulic digging machine. A mode for storing the potential energy is to convert the potential energy into pressure energy. The energy accumulator and the generator are connected through a proportioning valve so as to control the rotational speed of the generator. The method realizes high-efficiency recovery of the potential energy of the movable arm of the hydraulic digging machine; the principle of the method is to skillfully change the working time of hydraulic oil for power generation through the function of energy storage of the energy accumulator and provide effective buffering for recovering the potential energy; in addition, through the throttling control of the proportioning valve, the method reduces pressure fluctuation of the hydraulic oil in the power generation process, realizes the adjustment of the working rotational speed of the generator, improves the working efficiency of the generator and further improves the efficiency of energy recovery.

Description

一种液压挖掘机动臂势能回收方法及装置 Method and device for recovering potential energy of hydraulic excavator arm

技术领域 technical field

本发明属于机电一体化技术领域，涉及一种液压挖掘机动臂势能回收方法及装置。The invention belongs to the technical field of mechatronics, and relates to a method and a device for recovering potential energy of a hydraulic excavator arm.

背景技术 Background technique

液压挖掘机是一种典型的周期性作业设备，动臂的下降是其工作周期的一个典型环节。当液压挖掘机动臂下降时，普通液压挖掘机是通过控制阀的开度来调节工作臂的下降速度，通过关闭控制阀实现动臂下降运动的停止。普通液压挖掘机通常没有能量回收装置，动臂下放过程中释放的势能大部分消耗在控制阀上，造成了能量的浪费。The hydraulic excavator is a typical periodic operation equipment, and the lowering of the boom is a typical part of its work cycle. When the boom of the hydraulic excavator is lowered, the ordinary hydraulic excavator adjusts the lowering speed of the working arm through the opening of the control valve, and stops the lowering movement of the boom by closing the control valve. Ordinary hydraulic excavators usually do not have an energy recovery device, and most of the potential energy released during the lowering of the boom is consumed on the control valve, resulting in a waste of energy.

混合动力液压挖掘机由于装有蓄电池和发电机，理论上可以把液压挖掘机动臂下降过程中的势能回收成电能并存储于蓄电池中，在适当的时候再用于驱动电动机做功。现有的油电混合动力液压挖掘机动臂势能回收方法大多采用在动臂液压缸回油路上串接液压马达和发电机，通过液压马达驱动发电机把动臂的势能回收成电能。由于液压挖掘机动臂下降过程中可以进行能量回收的时间通常小于2秒钟，且回收过程中液压油的压力波动大，导致发电机工作在低效率区、能量回收的效率非常低。Since the hybrid hydraulic excavator is equipped with a battery and a generator, it can theoretically recover the potential energy during the lowering of the hydraulic excavator arm into electrical energy and store it in the battery, which can then be used to drive the motor to do work at an appropriate time. Most of the existing oil-electric hybrid hydraulic excavator arm potential energy recovery methods use a hydraulic motor and a generator connected in series on the return line of the hydraulic cylinder of the boom, and the potential energy of the boom is recovered into electrical energy through the hydraulic motor driving the generator. Since the energy recovery time during the lowering process of the hydraulic excavator arm is usually less than 2 seconds, and the pressure fluctuation of the hydraulic oil during the recovery process is large, the generator works in a low-efficiency area, and the efficiency of energy recovery is very low.

发明内容 Contents of the invention

本发明所要解决的技术问题是提供一种液压挖掘机动臂势能回收方法及装置，以提高液压挖掘机动臂势能的回收效率。The technical problem to be solved by the present invention is to provide a method and device for recovering the potential energy of the arm of the hydraulic excavator, so as to improve the recovery efficiency of the potential energy of the arm of the hydraulic excavator.

本发明的技术解决方案如下：Technical solution of the present invention is as follows:

一种液压挖掘机动臂势能回收方法，其特征在于，先通过蓄能器把液压缸回缩过程中的势能储存，再将蓄能器中的储能驱动发电机发电，实现液压挖掘机动臂势能的回收。A method for recovering the potential energy of a hydraulic excavator arm, which is characterized in that the potential energy in the retraction process of the hydraulic cylinder is first stored through an accumulator, and then the energy stored in the accumulator is used to drive a generator to generate electricity to realize hydraulic excavation maneuvering. Recovery of arm potential energy.

所述储存势能的方式是将势能转换成压力能。The way of storing potential energy is to convert potential energy into pressure energy.

所述的蓄能器和发电机之间通过比例阀连接以控制发电机的转速。The accumulator and the generator are connected through a proportional valve to control the rotation speed of the generator.

一种液压挖掘机动臂势能回收装置，其特征在于，包括液压缸、油箱、储能器、马达、发电机和储能装置；所述的液压缸的一端通过第一电磁阀与油箱连接；另一端通过第二电磁阀与油箱连接；所述的液压缸的无杆端与储能器通过第三电磁阀连接；所述的储能器通过第四电磁阀、马达与发电机连接；所述的发电机与储能装置电连接。A potential energy recovery device for a hydraulic excavator arm, characterized in that it includes a hydraulic cylinder, a fuel tank, an energy storage device, a motor, a generator, and an energy storage device; one end of the hydraulic cylinder is connected to the fuel tank through a first solenoid valve; The other end is connected to the fuel tank through the second solenoid valve; the rodless end of the hydraulic cylinder is connected to the accumulator through the third solenoid valve; the accumulator is connected to the generator through the fourth solenoid valve and the motor; the The generator described above is electrically connected to the energy storage device.

所述的液压挖掘机动臂势能回收装置还包括控制器，所述的控制器与第一电磁阀、第二电磁阀、第三电磁阀和第四电磁阀的控制端连接。The hydraulic excavator arm potential energy recovery device further includes a controller, and the controller is connected to the control ends of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve.

所述的第一电磁阀、第二电磁阀和第三电磁阀均为二位二通电磁阀。The first solenoid valve, the second solenoid valve and the third solenoid valve are all two-position two-way solenoid valves.

所述的第四电磁阀为二位二通比例阀。The fourth electromagnetic valve is a two-position two-way proportional valve.

所述的发电机通过逆变器与储能装置连接。The generator is connected with the energy storage device through the inverter.

有益效果：Beneficial effect:

本发明实现了液压挖掘机动臂势能的高效回收，其原理是巧妙地通过蓄能器的储能作用改变了液压油用于发电的工作时间，给势能的回收提供了有效的缓冲，另外，通过比例阀的节流控制减小了发电过程中液压油的压力波动，实现了发电机工作转速的调节，提高了发电机的工作效率，进而提高了能量回收的效率。The invention realizes the efficient recovery of the potential energy of the arm of the hydraulic excavator. The principle is that the working time of the hydraulic oil for power generation is cleverly changed through the energy storage function of the accumulator, which provides an effective buffer for the recovery of the potential energy. In addition, The throttling control of the proportional valve reduces the pressure fluctuation of the hydraulic oil during the power generation process, realizes the adjustment of the working speed of the generator, improves the working efficiency of the generator, and then improves the efficiency of energy recovery.

通过蓄能器把液压缸回缩过程中的势能先转换成压力能，然后通过控制器的控制，把蓄能器中的压力油用于驱动发电机发电。由于蓄能器的储能作用，避免了现有能量回收只能发生在液压缸缩回时的不足，有效延长了能量回收的时间。The potential energy in the retraction process of the hydraulic cylinder is first converted into pressure energy through the accumulator, and then the pressure oil in the accumulator is used to drive the generator to generate electricity through the control of the controller. Due to the energy storage function of the accumulator, the deficiency that the existing energy recovery can only occur when the hydraulic cylinder is retracted is avoided, and the energy recovery time is effectively extended.

通过控制器调整二位二通比例阀的开度，保持液压油流过发电机时的压差基本保持不变，实现发电机工作转速的调节，确保发电机工作在高效率区。由此克服了原有的势能回收装置势能回收效率低的缺点。Adjust the opening degree of the two-position two-way proportional valve through the controller to keep the pressure difference when the hydraulic oil flows through the generator basically unchanged, realize the adjustment of the working speed of the generator, and ensure that the generator works in a high-efficiency area. Therefore, the shortcoming of low potential energy recovery efficiency of the original potential energy recovery device is overcome.

附图说明 Description of drawings

图1为液压挖掘机动臂势能能量回收装置示意图。Figure 1 is a schematic diagram of a potential energy recovery device for a hydraulic excavator arm.

具体实施方式 Detailed ways

下面实例是对本发明的进一步说明，而不是限制发明的范围。The following example is to further illustrate the present invention, but not to limit the scope of the invention.

实施例1：Example 1:

如图1所示，油电混合动力液压挖掘机动臂势能回收装置，包括液压缸3、控制器1、蓄能器2、二位二通电磁阀4、5和7、二位二通比例阀6(其中二位二通电磁阀4、7和5和二位二通比例阀6分别对应发明内容部分的第一电磁阀、第二电磁阀、第三电磁阀和第四电磁阀)、发电机9、液压马达10、逆变器11、储能器12和油箱8，二位二通电磁阀4、5和7均为常闭电磁阀，二位二通比例阀6为常闭比例阀，二位二通电磁阀4安装在液压缸3有杆腔油口和油箱8之间，二位二通电磁阀7安装在液压缸3无杆腔油口和油箱8之间，二位二通电磁阀5一端与液压缸3无杆腔的油口相连，另一端与二位二通比例阀6相连。蓄能器2安装在二位二通电磁阀5和二位二通比例阀6之间。二位二通比例阀6之后依次串接了液压马达10、发电机9、逆变器11和储能器12。控制器2的输出分别与二位二通电磁阀4、5、7、二位二通比例阀6和发电机9相连。另外需要说明的是：图1中的标号8对应的是同一个油箱，画成多个只是行业画图的标准。As shown in Figure 1, the oil-electric hybrid hydraulic excavator arm potential energy recovery device includes a hydraulic cylinder 3, a controller 1, an accumulator 2, two-position two-way solenoid valves 4, 5 and 7, and a two-position two-way ratio Valve 6 (two-position two-way solenoid valves 4, 7 and 5 and two-position two-way proportional valve 6 respectively correspond to the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve in the summary of the invention), Generator 9, hydraulic motor 10, inverter 11, accumulator 12 and oil tank 8, two-position two-way solenoid valves 4, 5 and 7 are normally closed solenoid valves, and two-position two-way proportional valve 6 is normally closed proportional Valve, the two-position two-way solenoid valve 4 is installed between the oil port of the rod chamber of the hydraulic cylinder 3 and the fuel tank 8, the two-position two-way solenoid valve 7 is installed between the oil port of the rodless chamber of the hydraulic cylinder 3 and the fuel tank 8, and the two-position One end of the two-way solenoid valve 5 is connected to the oil port of the rodless cavity of the hydraulic cylinder 3, and the other end is connected to the two-position two-way proportional valve 6. The accumulator 2 is installed between the two-position two-way solenoid valve 5 and the two-position two-way proportional valve 6 . A hydraulic motor 10 , a generator 9 , an inverter 11 and an accumulator 12 are sequentially connected in series after the two-position two-way proportional valve 6 . The output of the controller 2 is connected with the two-position two-way solenoid valves 4, 5, 7, the two-position two-way proportional valve 6 and the generator 9 respectively. In addition, it should be noted that the number 8 in Fig. 1 corresponds to the same fuel tank, and it is only a standard for industry to draw multiple drawings.

该装置的工作过程如下：当液压缸3的活塞杆缩回时，如果不需要进行能量回收，则开启二位二通电磁阀4、7，关闭二位二通电磁阀5和二位二通比例阀6，油箱8中的液压油通过二位二通电磁阀4进入液压缸3的有杆腔，液压缸3无杆腔中的液压油通过二位二通电磁阀7回油箱；如果需要进行能量回收，则先关闭二位二通电磁阀7和二位二通比例阀6，再接通二位二通电磁阀4、5，油箱8中的液压油通过二位二通电磁阀4进入液压缸3的有杆腔，液压缸3无杆腔中的液压油被充入到蓄能器2中。当需要进行能量回收时，控制器1关闭二位二通电磁阀5、7，接通二位二通电磁阀4和二位二通比例阀6，蓄能器2中的压力油流入液压马达10，带动发电机9发电，发电机9产生的电能通过逆变器11存储在储能器12中。The working process of the device is as follows: When the piston rod of the hydraulic cylinder 3 is retracted, if energy recovery is not required, the two-position two-way solenoid valves 4 and 7 are opened, and the two-position two-way solenoid valves 5 and two-position two-way solenoid valves are closed. The proportional valve 6 and the hydraulic oil in the oil tank 8 enter the rod chamber of the hydraulic cylinder 3 through the two-position two-way solenoid valve 4, and the hydraulic oil in the rodless chamber of the hydraulic cylinder 3 returns to the oil tank through the two-position two-way solenoid valve 7; if necessary To recover energy, first close the two-position two-way solenoid valve 7 and the two-position two-way proportional valve 6, then connect the two-position two-way solenoid valves 4 and 5, and the hydraulic oil in the oil tank 8 passes through the two-position two-way solenoid valve 4 Enter the rod chamber of the hydraulic cylinder 3, and the hydraulic oil in the rodless chamber of the hydraulic cylinder 3 is charged into the accumulator 2. When energy recovery is required, the controller 1 closes the two-position two-way solenoid valves 5 and 7, turns on the two-position two-way solenoid valve 4 and the two-position two-way proportional valve 6, and the pressure oil in the accumulator 2 flows into the hydraulic motor 10. Drive the generator 9 to generate electricity, and the electric energy generated by the generator 9 is stored in the energy storage device 12 through the inverter 11 .

通过蓄能器2把液压缸3回缩过程中的势能先转换成压力能，然后通过控制器1的控制，把蓄能器2中的压力油用于驱动发电机9发电。由于蓄能器2的储能作用，避免了现有能量回收只能发生在液压缸3缩回时的不足，有效延长了能量回收的时间。The potential energy in the retraction process of the hydraulic cylinder 3 is first converted into pressure energy through the accumulator 2, and then the pressure oil in the accumulator 2 is used to drive the generator 9 to generate electricity through the control of the controller 1. Due to the energy storage function of the accumulator 2, the deficiency that the existing energy recovery can only occur when the hydraulic cylinder 3 is retracted is avoided, and the energy recovery time is effectively extended.

通过控制器1调整二位二通比例阀6的开度，保持液压油流过发电机9时的压差基本保持不变，实现发电机9输出稳定的电能以及实现发动机9工作转速的调节，确保发电机9工作在高效率区。Adjust the opening degree of the two-position two-way proportional valve 6 through the controller 1, keep the pressure difference when the hydraulic oil flows through the generator 9 basically unchanged, realize the stable output of electric energy of the generator 9 and the adjustment of the working speed of the engine 9, Make sure that generator 9 works in the high efficiency zone.

Claims (8)

1、一种液压挖掘机动臂势能回收方法，其特征在于，先通过蓄能器把液压缸回缩过程中的势能储存，再将蓄能器中的储能驱动发电机发电，实现液压挖掘机动臂势能的回收。1. A method for recovering the potential energy of the arm of a hydraulic excavator, which is characterized in that the potential energy in the retraction process of the hydraulic cylinder is first stored through an accumulator, and then the energy stored in the accumulator is used to drive a generator to generate electricity to realize hydraulic excavation The recovery of the potential energy of the mobile arm. 2、根据权利要求1所述的液压挖掘机动臂势能回收方法，其特征在于，所述储存势能的方式是将势能转换成压力能。2. The method for recovering the potential energy of the arm of the hydraulic excavator according to claim 1, characterized in that the way of storing the potential energy is to convert the potential energy into pressure energy. 3、根据权利要求1或2所述的液压挖掘机动臂势能回收方法，其特征在于，所述的蓄能器和发电机之间通过比例阀连接以控制发电机的转速。3. The method for recovering the potential energy of the arm of the hydraulic excavator according to claim 1 or 2, characterized in that the accumulator and the generator are connected through a proportional valve to control the rotation speed of the generator. 4、一种液压挖掘机动臂势能回收装置，其特征在于，包括液压缸、油箱、储能器、马达、发电机和储能装置；所述的液压缸的一端通过第一电磁阀与油箱连接；另一端通过第二电磁阀与油箱连接；所述的液压缸的无杆端与储能器通过第三电磁阀连接；所述的储能器通过第四电磁阀、马达与发电机连接；所述的发电机与储能装置电连接。4. A potential energy recovery device for a hydraulic excavator arm, characterized in that it includes a hydraulic cylinder, a fuel tank, an energy storage device, a motor, a generator, and an energy storage device; one end of the hydraulic cylinder is connected to the fuel tank through the first electromagnetic valve connection; the other end is connected to the oil tank through the second solenoid valve; the rodless end of the hydraulic cylinder is connected to the accumulator through the third solenoid valve; the accumulator is connected to the generator through the fourth solenoid valve and the motor ; The generator is electrically connected with the energy storage device. 5、根据权利要求4所述的液压挖掘机动臂势能回收装置，其特征在于，还包括控制器，所述的控制器与第一电磁阀、第二电磁阀、第三电磁阀和第四电磁阀的控制端连接。5. The potential energy recovery device for hydraulic excavator arm according to claim 4, further comprising a controller, the controller communicates with the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve. The control side connection of the solenoid valve. 6、根据权利要求4所述的液压挖掘机动臂势能回收装置，其特征在于，所述的第一电磁阀、第二电磁阀和第三电磁阀均为二位二通电磁阀。6. The potential energy recovery device for the arm of a hydraulic excavator according to claim 4, wherein the first solenoid valve, the second solenoid valve and the third solenoid valve are all two-position two-way solenoid valves. 7、根据权利要求4所述的液压挖掘机动臂势能回收装置，其特征在于，所述的第四电磁阀为二位二通比例阀。7. The potential energy recovery device for the arm of the hydraulic excavator according to claim 4, wherein the fourth electromagnetic valve is a two-position two-way proportional valve. 8、根据权利要求4～7任一项所述的液压挖掘机动臂势能回收装置，其特征在于，所述的发电机通过逆变器与储能装置连接。8. The potential energy recovery device for the arm of a hydraulic excavator according to any one of claims 4-7, wherein the generator is connected to the energy storage device through an inverter.
CN2008101438747A 2008-12-09 2008-12-09 Method and device for recovering potential energy of hydraulic excavator arm Expired - Fee Related CN101435451B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008101438747A CN101435451B (en) 2008-12-09 2008-12-09 Method and device for recovering potential energy of hydraulic excavator arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008101438747A CN101435451B (en) 2008-12-09 2008-12-09 Method and device for recovering potential energy of hydraulic excavator arm

Publications (2)

Publication Number Publication Date
CN101435451A true CN101435451A (en) 2009-05-20
CN101435451B CN101435451B (en) 2012-03-28

Family

ID=40710035

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008101438747A Expired - Fee Related CN101435451B (en) 2008-12-09 2008-12-09 Method and device for recovering potential energy of hydraulic excavator arm

Country Status (1)

Country Link
CN (1) CN101435451B (en)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846121A (en) * 2010-06-01 2010-09-29 湖南山河智能机械股份有限公司 Energy recovering system of hydraulic executing mechanism
CN101956405A (en) * 2010-07-15 2011-01-26 吉林大学 Gravitational potential energy recovery device during descending of engineering machinery movable arm
US7900444B1 (en) 2008-04-09 2011-03-08 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
CN102071718A (en) * 2011-03-01 2011-05-25 湖南山河智能机械股份有限公司 System for recovering energy of excavator
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US7963110B2 (en) 2009-03-12 2011-06-21 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8046990B2 (en) 2009-06-04 2011-11-01 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage and recovery systems
US8104274B2 (en) 2009-06-04 2012-01-31 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
US8117842B2 (en) 2009-11-03 2012-02-21 Sustainx, Inc. Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
CN102535554A (en) * 2010-11-17 2012-07-04 利勃海尔液压挖掘机有限公司 Implement actuated through at least one working drive movable element
CN102561448A (en) * 2010-11-17 2012-07-11 利勃海尔液压挖掘机有限公司 Device for processing material
CN102561442A (en) * 2010-11-17 2012-07-11 利勃海尔液压挖掘机有限公司 Work device
CN102678690A (en) * 2012-05-22 2012-09-19 山河智能装备股份有限公司 Potential energy recycling hydraulic system of working device
CN102691682A (en) * 2011-03-21 2012-09-26 杨双来 Method and device for potential energy recovery and storage by utilizing deadweight of crane jib
CN102822423A (en) * 2010-04-20 2012-12-12 住友重机械工业株式会社 Construction machine
CN102826000A (en) * 2012-08-17 2012-12-19 三一集团有限公司 Vehicle hybrid power system and container stacker
CN102971542A (en) * 2011-02-03 2013-03-13 日立建机株式会社 Power regeneration device for work machine
CN103671295A (en) * 2013-12-17 2014-03-26 四川百世昌重型机械有限公司 Closed energy storage hydraulic system
CN104005440A (en) * 2014-06-06 2014-08-27 山东中川液压有限公司 Potential energy recovering control device of hydraulic excavator boom
CN104047934A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and matching method during load continuous change
CN104047932A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and use method under non-stable load condition
CN104047935A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and use method under non-stable load condition
CN103452149B (en) * 2013-08-26 2015-07-15 中外合资沃得重工（中国）有限公司 Potential energy recovery hydraulic control device for movable arm of excavator
CN102561448B (en) * 2010-11-17 2016-12-14 利勃海尔液压挖掘机有限公司 The machinery processed for material
US9638217B2 (en) 2011-03-21 2017-05-02 Shuanglai Yang Lifting system and lifting method for jib of an operating machine, and an operating machine thereof
CN106939907A (en) * 2016-05-12 2017-07-11 华若延 A kind of energy-recuperation system for building machinery
CN107420384A (en) * 2017-09-15 2017-12-01 太原理工大学 Lifting device gravitional force P-V storage system
CN108368692A (en) * 2015-12-04 2018-08-03 斗山英维高株式会社 The hydraulic control device and hydraulic control method of engineering machinery
CN109253120A (en) * 2018-10-17 2019-01-22 太原理工大学 Combination cylinder energy conservation hoisting system
CN109563862A (en) * 2017-03-14 2019-04-02 日立建机株式会社 The fluid pressure drive device of Work machine
CN111649013A (en) * 2020-06-16 2020-09-11 长沙理工大学 An active hydraulic energy storage device based on linear motor
CN113731965A (en) * 2020-05-29 2021-12-03 比亚迪股份有限公司 Device for processing a hydraulic vehicle brake system
CN114215829A (en) * 2021-12-09 2022-03-22 中联重科土方机械有限公司 Movable arm potential energy recovery system for engineering equipment and engineering equipment
WO2024108543A1 (en) * 2022-11-25 2024-05-30 江苏徐工工程机械研究院有限公司 Energy recovery and reuse system for loader-digger and control method therefor, and loader-digger

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8479505B2 (en) 2008-04-09 2013-07-09 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8240140B2 (en) 2008-04-09 2012-08-14 Sustainx, Inc. High-efficiency energy-conversion based on fluid expansion and compression
US8225606B2 (en) 2008-04-09 2012-07-24 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8474255B2 (en) 2008-04-09 2013-07-02 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8448433B2 (en) 2008-04-09 2013-05-28 Sustainx, Inc. Systems and methods for energy storage and recovery using gas expansion and compression
US8677744B2 (en) 2008-04-09 2014-03-25 SustaioX, Inc. Fluid circulation in energy storage and recovery systems
US8250863B2 (en) 2008-04-09 2012-08-28 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
US8359856B2 (en) 2008-04-09 2013-01-29 Sustainx Inc. Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery
WO2009152141A2 (en) 2008-06-09 2009-12-17 Sustainx, Inc. System and method for rapid isothermal gas expansion and compression for energy storage
US8171728B2 (en) 2010-04-08 2012-05-08 Sustainx, Inc. High-efficiency liquid heat exchange in compressed-gas energy storage systems
US8191362B2 (en) 2010-04-08 2012-06-05 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8234863B2 (en) 2010-05-14 2012-08-07 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8495872B2 (en) 2010-08-20 2013-07-30 Sustainx, Inc. Energy storage and recovery utilizing low-pressure thermal conditioning for heat exchange with high-pressure gas
US8578708B2 (en) 2010-11-30 2013-11-12 Sustainx, Inc. Fluid-flow control in energy storage and recovery systems
WO2012158781A2 (en) 2011-05-17 2012-11-22 Sustainx, Inc. Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems
US20130091834A1 (en) 2011-10-14 2013-04-18 Sustainx, Inc. Dead-volume management in compressed-gas energy storage and recovery systems
RU2709270C1 (en) * 2018-08-01 2019-12-17 Федеральное государственное бюджетное образовательное учреждение высшего образования "Псковский государственный университет" Single-bucket excavator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3590547B2 (en) * 1999-07-13 2004-11-17 新キャタピラー三菱株式会社 Control device for hydraulic actuator
JP2006336306A (en) * 2005-06-02 2006-12-14 Shin Caterpillar Mitsubishi Ltd Work machine
CN1958972A (en) * 2005-11-01 2007-05-09 李恒辉 Method for retrieving reciprocating potential energy of working machines and tools
CN101012802A (en) * 2006-12-21 2007-08-08 中国科学院广州能源研究所 Hydraulic cylinder down-suspension floater wave energy generating system
CN201339206Y (en) * 2008-12-09 2009-11-04 中南大学 Movable arm potential energy recovery device of hybrid power hydraulic pressure excavating machine

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7900444B1 (en) 2008-04-09 2011-03-08 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US8122718B2 (en) 2009-01-20 2012-02-28 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US7963110B2 (en) 2009-03-12 2011-06-21 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage
US8046990B2 (en) 2009-06-04 2011-11-01 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage and recovery systems
US8104274B2 (en) 2009-06-04 2012-01-31 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
US8109085B2 (en) 2009-09-11 2012-02-07 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8117842B2 (en) 2009-11-03 2012-02-21 Sustainx, Inc. Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
CN102822423B (en) * 2010-04-20 2015-08-19 住友重机械工业株式会社 Construction machinery
CN102822423A (en) * 2010-04-20 2012-12-12 住友重机械工业株式会社 Construction machine
CN101846121A (en) * 2010-06-01 2010-09-29 湖南山河智能机械股份有限公司 Energy recovering system of hydraulic executing mechanism
CN101956405A (en) * 2010-07-15 2011-01-26 吉林大学 Gravitational potential energy recovery device during descending of engineering machinery movable arm
CN102561442A (en) * 2010-11-17 2012-07-11 利勃海尔液压挖掘机有限公司 Work device
CN102561442B (en) * 2010-11-17 2017-04-26 利勃海尔液压挖掘机有限公司 Work device
US9163385B2 (en) 2010-11-17 2015-10-20 Liebherr-Hydraulikbagger Gmbh Working device
CN102535554A (en) * 2010-11-17 2012-07-04 利勃海尔液压挖掘机有限公司 Implement actuated through at least one working drive movable element
CN102561448B (en) * 2010-11-17 2016-12-14 利勃海尔液压挖掘机有限公司 The machinery processed for material
CN102561448A (en) * 2010-11-17 2012-07-11 利勃海尔液压挖掘机有限公司 Device for processing material
CN102535554B (en) * 2010-11-17 2017-04-12 利勃海尔液压挖掘机有限公司 Implement actuated through at least one working drive movable element
CN102971542A (en) * 2011-02-03 2013-03-13 日立建机株式会社 Power regeneration device for work machine
CN102971542B (en) * 2011-02-03 2015-11-25 日立建机株式会社 The power regeneration device of Work machine
CN102071718B (en) * 2011-03-01 2012-11-14 山河智能装备股份有限公司 System for recovering energy of excavator
CN102071718A (en) * 2011-03-01 2011-05-25 湖南山河智能机械股份有限公司 System for recovering energy of excavator
US9638217B2 (en) 2011-03-21 2017-05-02 Shuanglai Yang Lifting system and lifting method for jib of an operating machine, and an operating machine thereof
CN102691682A (en) * 2011-03-21 2012-09-26 杨双来 Method and device for potential energy recovery and storage by utilizing deadweight of crane jib
CN102678690B (en) * 2012-05-22 2015-05-20 山河智能装备股份有限公司 Potential energy recycling hydraulic system of working device
CN102678690A (en) * 2012-05-22 2012-09-19 山河智能装备股份有限公司 Potential energy recycling hydraulic system of working device
CN102826000A (en) * 2012-08-17 2012-12-19 三一集团有限公司 Vehicle hybrid power system and container stacker
CN102826000B (en) * 2012-08-17 2016-04-06 湖南三一港口设备有限公司 Vehicle hybrid system and container stacking machine
CN104047935A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and use method under non-stable load condition
CN104047932B (en) * 2013-03-15 2016-03-30 宝钢工业炉工程技术有限公司 The potential energy recovery system of jacking equipment under Vnsteady loads and using method thereof
CN104047932A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and use method under non-stable load condition
CN104047934A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and matching method during load continuous change
CN103452149B (en) * 2013-08-26 2015-07-15 中外合资沃得重工（中国）有限公司 Potential energy recovery hydraulic control device for movable arm of excavator
CN103671295A (en) * 2013-12-17 2014-03-26 四川百世昌重型机械有限公司 Closed energy storage hydraulic system
CN103671295B (en) * 2013-12-17 2016-03-16 四川百世昌重型机械有限公司 A kind of enclosed energy storage hydraulic system
CN104005440A (en) * 2014-06-06 2014-08-27 山东中川液压有限公司 Potential energy recovering control device of hydraulic excavator boom
CN108368692A (en) * 2015-12-04 2018-08-03 斗山英维高株式会社 The hydraulic control device and hydraulic control method of engineering machinery
CN106939907A (en) * 2016-05-12 2017-07-11 华若延 A kind of energy-recuperation system for building machinery
CN106939908A (en) * 2016-05-12 2017-07-11 华若延 Building machinery energy reclaiming method
CN107013507A (en) * 2016-05-12 2017-08-04 华若延 A kind of energy reclaiming method of building machinery
CN109563862B (en) * 2017-03-14 2020-06-19 日立建机株式会社 Hydraulic drive device for working machine
CN109563862A (en) * 2017-03-14 2019-04-02 日立建机株式会社 The fluid pressure drive device of Work machine
CN107420384B (en) * 2017-09-15 2019-04-30 太原理工大学 Lifting device gravity potential energy pressure volume storage system
CN107420384A (en) * 2017-09-15 2017-12-01 太原理工大学 Lifting device gravitional force P-V storage system
CN109253120A (en) * 2018-10-17 2019-01-22 太原理工大学 Combination cylinder energy conservation hoisting system
CN113731965A (en) * 2020-05-29 2021-12-03 比亚迪股份有限公司 Device for processing a hydraulic vehicle brake system
CN113731965B (en) * 2020-05-29 2023-09-05 比亚迪股份有限公司 Device for treating a hydraulic vehicle brake system
CN111649013A (en) * 2020-06-16 2020-09-11 长沙理工大学 An active hydraulic energy storage device based on linear motor
CN114215829A (en) * 2021-12-09 2022-03-22 中联重科土方机械有限公司 Movable arm potential energy recovery system for engineering equipment and engineering equipment
CN114215829B (en) * 2021-12-09 2024-03-22 中联重科土方机械有限公司 Swing arm potential energy recovery system for engineering equipment and engineering equipment
WO2024108543A1 (en) * 2022-11-25 2024-05-30 江苏徐工工程机械研究院有限公司 Energy recovery and reuse system for loader-digger and control method therefor, and loader-digger
US12234625B2 (en) 2022-11-25 2025-02-25 Jiangsu Xcmg Construction Machinery Research Institute Ltd. Backhoe loader energy recovery and reuse system and control method thereof, and backhoe loader

Also Published As

Publication number Publication date
CN101435451B (en) 2012-03-28

Similar Documents

Publication Publication Date Title
CN101435451A (en) Movable arm potential energy recovery method and apparatus of hydraulic excavator
CN201339206Y (en) Movable arm potential energy recovery device of hybrid power hydraulic pressure excavating machine
CN102094434B (en) System for differential recovery of potential energy of boom of oil liquid hybrid power excavating machine
CN102912821B (en) Hydraulic excavating energy saving system
CN102587444B (en) Oil hybrid system for excavator with energy differential recovery
CN202081450U (en) Potential energy differential recovery system for moving arm of oil-liquid hybrid power excavator
CN103741755B (en) Excavator energy recovery system
CN102877495B (en) Hybrid power system for recovering potential energy of movable arm of excavating machine
WO2013035815A1 (en) Excavator and control method for excavator
CN103470557B (en) Hydraulic rotary braking energy-saving control system
CN110258684A (en) A kind of energy saver of excavator swing arm single cylinder pressure-bearing energy regenerating and recycling
CN104358284A (en) Oil electro-hydraulic hybrid driving system for hydraulic digging machine
CN104452868B (en) Double-hydraulic-cylinder mixed drive control system
CN102889273A (en) Electro-hydraulic system for recycling and releasing potential energy of engineering machinery
CN103397679B (en) Movable arm energy-saving control system
CN108591144B (en) Distributed direct-drive excavator hydraulic system with motor-driven dual quantitative pumps and dual accumulators
CN108533546B (en) Hydraulic excavator power system adopting double-pump direct drive and differential fast forward automatic switching
CN103924627A (en) Automatic idle speed system and method of electro-hydraulic hybrid-driving engineering machine
CN204266284U (en) A kind of hydraulic excavating machine oil electricity liquid hybrid drive system
CN107235440A (en) A kind of liquid electricity mixing energy conserving system for lifting mechanism
CN103469835B (en) Excavator oil-liquid hybrid power control system with energy recovery and conversion functions
CN104727372B (en) Engineering machinery swing arm energy-saving drive system
CN204590152U (en) A kind of engineering machinery swing arm energy-saving driving system
CN108302074B (en) Energy regeneration system and control method of electric forklift
CN103437392B (en) Hybrid power hydraulic excavator system and using method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120328

Termination date: 20121209