WO2006081744A1 - A hydraulic auxiliary system with an accumulator increasing flow for a concrete pump - Google Patents

A hydraulic auxiliary system with an accumulator increasing flow for a concrete pump Download PDF

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Publication number
WO2006081744A1
WO2006081744A1 PCT/CN2006/000110 CN2006000110W WO2006081744A1 WO 2006081744 A1 WO2006081744 A1 WO 2006081744A1 CN 2006000110 W CN2006000110 W CN 2006000110W WO 2006081744 A1 WO2006081744 A1 WO 2006081744A1
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WO
WIPO (PCT)
Prior art keywords
oil
accumulator
point
pump
valve
Prior art date
Application number
PCT/CN2006/000110
Other languages
French (fr)
Chinese (zh)
Inventor
Yangdong He
Original Assignee
Yangdong He
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 Yangdong He filed Critical Yangdong He
Priority to US11/815,561 priority Critical patent/US20080112818A1/en
Priority to DE112006000284T priority patent/DE112006000284T5/en
Publication of WO2006081744A1 publication Critical patent/WO2006081744A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members

Definitions

  • the invention relates to a concrete pump hydraulic system auxiliary energy storage and increasing device.
  • the hydraulic system of the concrete pump performs the driving function of the pumping, distribution and agitation of the concrete in the concrete pump.
  • the existing hydraulic system which is composed of a working oil circuit device and a stirring oil circuit device, that is, a so-called double pump oil supply, see FIG. 5; a pumping oil circuit device, a distribution oil circuit device and a stirring oil circuit device , the so-called three pump oil supply, see Figure 4. They all lack an auxiliary energy storage device.
  • the main oil pump works in the constant power control zone, the former often has a phenomenon that the power of the distribution valve cylinder is insufficient due to the increase of the oil pump pressure and the displacement, and the hydraulic shock of the oil passage is large; the latter is distributed in the oil passage constant pressure pump.
  • the frequent shifting of the working state between the maximum displacement and the minimum displacement results in a shortened working life, an increased failure rate, and insufficient performance of the pump.
  • the above drawbacks adversely affect the operational reliability of the concrete pump and increase the manufacturing and maintenance costs of the product.
  • the technical problem to be solved by the present invention is to provide a concrete pump hydraulic system auxiliary energy storage and increasing device for the defects of the prior art, which can help eliminate the phenomenon of insufficient power of the distribution valve cylinder and improve the hydraulic system work. State to improve the performance, efficiency and reliability of the concrete pump hydraulic system.
  • the device has a coupling oil passage 1 having an input end P and an output end B, the technical feature of which is that the oil passage between the input end P and the output end B is Connection There is a check valve 11 to which an accumulator 10 and a relief valve 12 with an output T are connected to the oil line between the check valve 11 and the input end P.
  • the pressure oil of the auxiliary energy storage and flow increasing device is provided by an oil pump, which may be a variable pump or a metering pump; the pressure oil enters from the input end P of the device.
  • the accumulator 10 is accumulating and the motive oil is outputted from the output terminal B via the check valve 11.
  • the setting of the relief valve 12 is mainly used here to ensure the safety of the oil circuit without overloading.
  • the overflow pressure of the device is set by the relief valve 12, and the pressure overflow flows back to the tank through the output terminal T.
  • the energy storage capacity of the auxiliary energy storage flow increasing device varies with the pressure of the hydraulic oil in the device. The pressure increases, and the ability to store and release energy increases.
  • This pressure change is automatically adapted to changes in the oil line pressure of the working oil circuit device.
  • the oil passage pressure at the output terminal B controls the state of charge of the accumulator 10.
  • the auxiliary energy storage and increasing device releases the corresponding power oil to supplement its demand; in the state where the distribution valve oil circuit is not reversed, the auxiliary energy storage and increasing device also applies to the working oil.
  • the road unit provides power oil.
  • the beneficial effects of the present invention are that the above-described technical solutions and characteristics of the device enable the reliability and working performance of the working oil circuit device to be effectively improved and enhanced, so that the oil pump to which the oil is supplied can be operated in a stable working state.
  • FIG. 1 is a schematic structural view of an auxiliary energy storage and flow increasing device for a concrete pump hydraulic system according to the present invention.
  • 2 to 3 are reference diagrams for use of the oil passage device composed of the present invention and the working oil passage device and the oil pump.
  • 4 to 5 are reference diagrams of the hydraulic oil circuit principle of the prior art concrete pump.
  • a concrete pump hydraulic system auxiliary energy storage and flow increasing device has a hydraulic hose pipe connected to the connecting oil circuit 1, and one end of the connecting oil circuit 1 is an input port, and the other end For the output port.
  • the check valve 11 is a commercially available check valve product of the type S10.
  • the accumulator 10 is a commercially available accumulator product of the type XL4.
  • the relief valve 12 is available in a commercially available relief valve type DB10.
  • the variable (quantitative) pump 3 supplies hydraulic oil to the auxiliary energy storage flow-increasing device, and the hydraulic oil enters from the input port and is output from the output port.
  • the pressure oil outputted from the output terminal 8 through the check valve (11) communicates with the pressure oil zone of the working oil circuit device, and the oil pressure of the working oil circuit device controls the oil pressure and energy storage state of the auxiliary energy storage device. .
  • the working oil circuit device is in the pumping state (the main oil cylinder 16 is operated), the electric storage device 10 of the auxiliary energy storage and increasing device performs isostatic energy storage, and after the energy storage is completed, the power oil is supplied to the working oil circuit device; the pumping pressure is increased.

Abstract

The present invention relates to a hydraulic auxiliary system with an accumulator increasing flow for a concrete pump. The system includes a connecting oil path with an inlet point P and an outlet point B. A check valve locates between the point P and B. There is an accumulator 10 and a relief valve 12 with a outlet point T between the check valve 11 and the point P. The pressured oil go into the accumulator storing energy through the point P, and then the accumulator exports the another pressured oil through the check valve 11. The pressure of point B controls the state of the accumulator 10. The relief valve 12 sets the relief pressure and the oil relieved go back to the tank through the point T. A distribution valve locates in the operating oil path, when the distribution valve shifts, the accumulator releases some pressured oil to complement the need of power. When the distribution valve does not shift, the accumulator supplies pressured oil also to the operating oil path. The present invention has stable property and the pump in this system runs stably.

Description

一种混凝土泵液压系统辅助蓄能增流装置 （二）  A concrete pump hydraulic system auxiliary energy storage and increasing device (2)
技术领域 Technical field
本发明涉及一种混凝土泵液压系统辅助蓄能增流装置。  The invention relates to a concrete pump hydraulic system auxiliary energy storage and increasing device.
背景技术 Background technique
混凝土泵的液压系统在混凝土泵中完成混凝土的泵送、 分配和搅拌装 置的驱动功能。 现有的液压系统， 一种由工作油路装置和搅拌油路装置构 成， 即所谓双泵供油， 参见图 5 ; —种由泵送油路装置、 分配油路装置和 搅拌油路装置构成， 即所谓三泵供油， 参见图 4。 它们都缺少辅助蓄能增 流装置。 当主油泵工作在恒功率控制区时， 前者常因油泵压力升高、 排量 下降而出现分配阀油缸动力不足的现象， 而且油路液压冲击较大； 后者的 分配阀油路恒压泵在最大排量和最小排量间频繁转换工作状态， 导致其工 作寿命缩短， 故障率上升， 而且油泵效能未能充分发挥。 上述缺陷对混凝 土泵的工作可靠性产生不利影响， 并增加了产品的制造和维护成本。  The hydraulic system of the concrete pump performs the driving function of the pumping, distribution and agitation of the concrete in the concrete pump. The existing hydraulic system, which is composed of a working oil circuit device and a stirring oil circuit device, that is, a so-called double pump oil supply, see FIG. 5; a pumping oil circuit device, a distribution oil circuit device and a stirring oil circuit device , the so-called three pump oil supply, see Figure 4. They all lack an auxiliary energy storage device. When the main oil pump works in the constant power control zone, the former often has a phenomenon that the power of the distribution valve cylinder is insufficient due to the increase of the oil pump pressure and the displacement, and the hydraulic shock of the oil passage is large; the latter is distributed in the oil passage constant pressure pump. The frequent shifting of the working state between the maximum displacement and the minimum displacement results in a shortened working life, an increased failure rate, and insufficient performance of the pump. The above drawbacks adversely affect the operational reliability of the concrete pump and increase the manufacturing and maintenance costs of the product.
发明内容 Summary of the invention
本发明要解决的技术问题是， 针对现有技术存在的缺陷， 提供一种混 凝土泵液压系统辅助蓄能增流装置， 该装置能有助于消除分配阀油缸动力 不足的现象，改善液压系统工作状态，提高混凝土泵液压系统的工作性能、 效率和可靠性。  The technical problem to be solved by the present invention is to provide a concrete pump hydraulic system auxiliary energy storage and increasing device for the defects of the prior art, which can help eliminate the phenomenon of insufficient power of the distribution valve cylinder and improve the hydraulic system work. State to improve the performance, efficiency and reliability of the concrete pump hydraulic system.
本发明的技术解决方案是， 提供一种混凝土泵液压系统辅助蓄能增流 The technical solution of the present invention is to provide a concrete pump hydraulic system to assist energy storage and increase flow
,装置， 该装置， 参见图 1， 具有联接油路 1， 该联接油路 1具有输入端 P 和输出端 B,其技术特点是，所述输入端 P与输出端 B之间的油路上还连接 有一个单向阀 11， 该单向阀 11与输入端 P之间的油路上连接有一个蓄能 器 10和一个带有输出端 T的溢流阀 12。 The device, the device, see Fig. 1, has a coupling oil passage 1 having an input end P and an output end B, the technical feature of which is that the oil passage between the input end P and the output end B is Connection There is a check valve 11 to which an accumulator 10 and a relief valve 12 with an output T are connected to the oil line between the check valve 11 and the input end P.
本发明的工作原理是， 参见图 2〜3， 辅助蓄能增流装置的压力油由油 泵提供， 所述油泵可以是变量泵， 也可以是定量泵； 压力油从该装置输入 端 P进入， 向蓄能器 10蓄能并经单向阀 11从输出端 B向外输出动力油。 溢流阀 12 的设置在这里主要起使油路不过载的安全保障作用。 利用溢流 阀 12设定本装置溢流压力， 压力溢流经输出端 T流回油箱。 本辅助蓄能 增流装置的蓄能能力随装置内液压油压力的变化而变化。 压力增加， 蓄能 和释能的能力增大。 该压力变化自动适应于工作油路装置的油路压力的变 化。 输出端 B的油路压力控制蓄能器 10的蓄能状态。 工作油路装置分配 阀油路换向过程中， 辅助蓄能增流装置释放相应的动力油补充其需求； 在 分配阀油路不换向的状态下， 辅助蓄能增流装置也向工作油路装置提供动 力油。  The working principle of the present invention is that, referring to Figures 2 to 3, the pressure oil of the auxiliary energy storage and flow increasing device is provided by an oil pump, which may be a variable pump or a metering pump; the pressure oil enters from the input end P of the device. The accumulator 10 is accumulating and the motive oil is outputted from the output terminal B via the check valve 11. The setting of the relief valve 12 is mainly used here to ensure the safety of the oil circuit without overloading. The overflow pressure of the device is set by the relief valve 12, and the pressure overflow flows back to the tank through the output terminal T. The energy storage capacity of the auxiliary energy storage flow increasing device varies with the pressure of the hydraulic oil in the device. The pressure increases, and the ability to store and release energy increases. This pressure change is automatically adapted to changes in the oil line pressure of the working oil circuit device. The oil passage pressure at the output terminal B controls the state of charge of the accumulator 10. In the process of reversing the oil passage of the working oil circuit device, the auxiliary energy storage and increasing device releases the corresponding power oil to supplement its demand; in the state where the distribution valve oil circuit is not reversed, the auxiliary energy storage and increasing device also applies to the working oil. The road unit provides power oil.
本发明的有益效果是， 本装置的上述技术方案及其特性使得工作油路 装置的可靠性和工作性能得到有效地提高和增强， 使向其供油的油泵能在 平稳的工作状态下运行。  The beneficial effects of the present invention are that the above-described technical solutions and characteristics of the device enable the reliability and working performance of the working oil circuit device to be effectively improved and enhanced, so that the oil pump to which the oil is supplied can be operated in a stable working state.
附图说明 DRAWINGS
, 图 1是本发明的混凝土泵液压系统辅助蓄能增流装置结构示意图。  1 is a schematic structural view of an auxiliary energy storage and flow increasing device for a concrete pump hydraulic system according to the present invention.
图 2〜3是本发明与工作油路装置及油泵组成的油路装置使用参考图。 图 4〜5是现有技术的混凝土泵液压油路原理参考图。  2 to 3 are reference diagrams for use of the oil passage device composed of the present invention and the working oil passage device and the oil pump. 4 to 5 are reference diagrams of the hydraulic oil circuit principle of the prior art concrete pump.
附图中： 1一联接油路，  In the drawing: 1 a joint oil circuit,
10—蓄能器， , 12—溢流阀， 10—Accumulator, , 12—relief valve,
11一单向阀，  11 one check valve,
16—主油缸，  16—the main cylinder,
19一分配阀油缸，  19 a distribution valve cylinder,
2—主油泵，  2—main oil pump,
3—泵。  3—Pump.
具体实施方式 detailed description
, 按照图 1和上述结构的本发明之一种混凝土泵液压系统辅助蓄能增流 装置的实施例， 有液压胶管管接的联接油路 1， 联接油路 1一端为输入端 Ρ， 另一端为输出端 Β。 单向阀 11采用型号为 S10的市售单向阀产品。 蓄 能器 10采用型号为 XL4的市售蓄能器产品。 溢流阀 12采用型号为 DB10 的市售溢流阀产品。  According to the embodiment of the present invention, a concrete pump hydraulic system auxiliary energy storage and flow increasing device according to the present invention has a hydraulic hose pipe connected to the connecting oil circuit 1, and one end of the connecting oil circuit 1 is an input port, and the other end For the output port. The check valve 11 is a commercially available check valve product of the type S10. The accumulator 10 is a commercially available accumulator product of the type XL4. The relief valve 12 is available in a commercially available relief valve type DB10.
从图 2〜3可以看到， 变量 （定量） 泵 3提供液压油给辅助蓄能增流 装置， 液压油从输入端 Ρ进入， 从输出端 Β输出。 经过单向阀 (11)由输出 .端8输出的压力油与工作油路装置的压力油区相通， 工作油路装置的油路 压力控制辅助蓄能增流装置的油路压力和蓄能状态。 当工作油路装置处于 泵送状态 （主油缸 16动作） 时， 辅助蓄能增流装置的蓄电器 10进行等压 蓄能， 完成蓄能后向工作油路装置提供动力油； 泵送压力增大， 蓄能压力 和容积也增大。 当工作油路装置处于换向状态 （分配阀油缸 19动作） 时， 蓄能器 10的能量释放， 和主油泵 2—起， 保证换向过程的压力和流量需 要。尤其当主油泵 2工作在恒功率区 (泵送压力增大，油泵排量减少） 时， 辅 .助蓄能增流装置能保证工作油路装置正常完成其换向过程。 与此同时， 油 泵 3始终工作在平稳状态 As can be seen from Figures 2 to 3, the variable (quantitative) pump 3 supplies hydraulic oil to the auxiliary energy storage flow-increasing device, and the hydraulic oil enters from the input port and is output from the output port. The pressure oil outputted from the output terminal 8 through the check valve (11) communicates with the pressure oil zone of the working oil circuit device, and the oil pressure of the working oil circuit device controls the oil pressure and energy storage state of the auxiliary energy storage device. . When the working oil circuit device is in the pumping state (the main oil cylinder 16 is operated), the electric storage device 10 of the auxiliary energy storage and increasing device performs isostatic energy storage, and after the energy storage is completed, the power oil is supplied to the working oil circuit device; the pumping pressure is increased. Large, accumulator pressure and volume also increase. When the working oil circuit device is in the reversing state (the dispensing valve cylinder 19 is actuated), the energy of the accumulator 10 is released, together with the main oil pump 2, to ensure the pressure and flow rate of the commutation process. Especially when the main oil pump 2 is operating in the constant power zone (the pumping pressure is increased and the pump displacement is reduced), the auxiliary energy storage flow increasing device can ensure that the working oil circuit device normally completes its commutation process. At the same time, oil Pump 3 always works at a steady state

Claims

权利 要 求 书 Claim
1、 一种混凝土泵液压系统辅助蓄能增流装置， 具有联接油路（1)， 该 联接油路 (1)具有输入端 P和输出端8，其特征是， 所述输入端 P与输出端 B之 间的油路上连接有一个单向阀（11)， 该单向阀（11)与输入端 P之间的油路 上还连接有一个蓄能器（10)和一个带有输出端 T的溢流阀 （12)。  1. A concrete pump hydraulic system auxiliary energy storage and increasing device, comprising a connecting oil circuit (1), the connecting oil circuit (1) has an input end P and an output end 8, wherein the input end P and the output A check valve (11) is connected to the oil passage between the end B, and an accumulator (10) and an output end T are connected to the oil passage between the check valve (11) and the input end P. Overflow valve (12).
PCT/CN2006/000110 2005-02-06 2006-01-23 A hydraulic auxiliary system with an accumulator increasing flow for a concrete pump WO2006081744A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/815,561 US20080112818A1 (en) 2005-02-06 2006-01-23 Auxiliary Energy-Accumulation And Flow-Enhancement Device For Hydraulic System Of Concrete Pump
DE112006000284T DE112006000284T5 (en) 2005-02-06 2006-01-23 A hydraulic auxiliary system with an accumulator for a concrete pump to increase the flow rate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510031258.9A CN1815040A (en) 2005-02-06 2005-02-06 Concrete pump hydraulic system auxiliary energy-storage flow-increasing device (2)
CN200510031258.9 2005-02-06

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CN101984255A (en) * 2010-10-11 2011-03-09 秦月明 Electric-hydraulic control system applied in concrete or coal slurry conveying device and method for controlling system
CN102305222B (en) * 2011-08-24 2014-03-26 天津大学 Electro-hydraulic variable valve device with energy accumulator buffer function and energy storage method thereof
CN102410265A (en) * 2011-09-22 2012-04-11 三一重机有限公司 Device for collecting overflow energy of hydraulic system
CN102536933B (en) * 2012-02-06 2015-05-20 三一重工股份有限公司 Hydraulic pumping system and concrete-pumping equipment comprising same
CN102878044B (en) * 2012-10-17 2015-01-07 飞翼股份有限公司 Full hydraulic control mining concrete pump
CN103603840B (en) * 2013-11-26 2016-03-23 三一汽车制造有限公司 Integrated hydraulic valve group and hydraulic driving system and concrete pump
CN113227587B (en) * 2018-12-26 2023-04-21 潍柴动力股份有限公司 Hydraulic variable pump set and excavator
CN112815231B (en) * 2019-11-17 2022-04-29 中石化石油工程技术服务有限公司 Liquid-gas pressurization system

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