WO2012113208A1 - Dispositif d'entraînement d'équipement de pompage de béton et équipement de pompage de béton - Google Patents

Dispositif d'entraînement d'équipement de pompage de béton et équipement de pompage de béton Download PDF

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Publication number
WO2012113208A1
WO2012113208A1 PCT/CN2011/078570 CN2011078570W WO2012113208A1 WO 2012113208 A1 WO2012113208 A1 WO 2012113208A1 CN 2011078570 W CN2011078570 W CN 2011078570W WO 2012113208 A1 WO2012113208 A1 WO 2012113208A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
hydraulic pump
valve
power source
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.)
Ceased
Application number
PCT/CN2011/078570
Other languages
English (en)
Chinese (zh)
Inventor
刘波
郭岗
裴杰
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.)
Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
Original Assignee
Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development 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 Hunan Zoomlion Special Vehicle Co Ltd, Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd filed Critical Hunan Zoomlion Special Vehicle Co Ltd
Publication of WO2012113208A1 publication Critical patent/WO2012113208A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more 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
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • 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
    • F15B2211/214—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers

Definitions

  • the present invention relates to a power drive apparatus for a concrete pumping apparatus and a concrete pumping apparatus including the power drive apparatus.
  • CN201386294Y discloses a dual power device for construction machinery, as shown in Fig. 1, the device comprises a first power source 1, a second power source 2, a first hydraulic pump 3, a hydraulic motor 6, a transfer case 7 and a second a hydraulic pump 8, the first power source 1 is drivingly connected to a first power input end of the transfer case 7 through the first hydraulic pump 3 and a hydraulic motor 6, and the second power source 2 is drivingly connected to the The second power input end of the transfer case 7 is connected to the second hydraulic pump 8 by the power output end of the transfer case 7.
  • the dual power device for construction machinery has two power output routes, and the first power output route is: the first power source 1 drives the first hydraulic pump 3, the first hydraulic pump 3 drives the hydraulic motor 6 to rotate, and the hydraulic motor 6 passes the minute
  • the movable box 7 drives the second hydraulic pump 8, and the second hydraulic pump 8 drives the working element to operate;
  • the second power output route is: the second power source 2 drives the second hydraulic pump 8 through the transfer case 7, the second hydraulic pump 8 then drive the working component to work.
  • the above-described dual power unit for construction machinery has an advantage in that the first power source 1 and the second power source 2 can be set as the motor and the engine, respectively, so that the second hydraulic pump 8 can be driven by the motor where there is an external power source.
  • the present invention provides a power driving device for a concrete pumping apparatus, the device comprising a first power source, a second power source, a first hydraulic pump, a hydraulic motor, a transfer case and a second hydraulic pump,
  • the first power source is coupled to a first power input of the transfer case by the first hydraulic pump and a hydraulic motor
  • the second power source is coupled to a second power input of the transfer case
  • the power output end of the transfer case is connected to the second hydraulic pump, and the second hydraulic pump hydraulically drives the working element through the hydraulic drive line, wherein the oil outlet of the first hydraulic pump is hydraulically connected To the hydraulic drive line.
  • the apparatus includes a hydraulic control element for controlling an oil outlet of the first hydraulic pump to selectively communicate with or communicate with an oil inlet of the hydraulic motor.
  • the hydraulic control element comprises a first cartridge valve and a second cartridge valve, wherein the two working ports of the first cartridge valve respectively correspond to the oil outlet of the first hydraulic pump and the hydraulic pressure
  • the oil inlet of the motor is hydraulically connected
  • the two working ports of the second cartridge valve are respectively hydraulically connected to the oil outlet of the first hydraulic pump and the hydraulic drive line.
  • the hydraulic control element comprises a reversing valve, and the two working ports of the reversing valve are respectively hydraulically connected with the control port of the first cartridge valve and the control port of the second cartridge valve .
  • the oil inlet of the reversing valve is hydraulically connected to the oil outlet of the first hydraulic pump.
  • the oil inlet of the reversing valve is hydraulically connected to the oil outlet of the second hydraulic pump.
  • a first one-way valve is connected in series between the oil inlet of the reversing valve and the oil outlet of the first hydraulic pump, and the oil inlet of the reversing valve and the first A second check valve is connected in series between the oil outlets of the two hydraulic pumps.
  • the hydraulic control element comprises a two-position three-way reversing valve, the oil inlet of the two-position three-way reversing valve is hydraulically connected to the oil outlet of the first hydraulic pump, and one working port is hydraulically connected to The oil inlet of the hydraulic motor and the other working port are hydraulically connected to the hydraulic drive line.
  • the hydraulic drive line is connected in series with a first reversing valve, and the oil outlet of the first hydraulic pump is hydraulically connected to the first between the first reversing valve and the second hydraulic pump Hydraulically driven piping.
  • the hydraulic drive line is connected in series with a first reversing valve, and the oil outlet of the first hydraulic pump is hydraulically connected to the first reversing valve and the working element through a second reversing valve The hydraulic drive line between the two.
  • the first power source is an electric motor
  • the second power source is an engine
  • the present invention provides a concrete pumping apparatus, wherein the concrete pumping apparatus comprises the above-described power driving apparatus.
  • the power driving device of the concrete pumping device provided by the present invention since the oil outlet of the first hydraulic pump is hydraulically connected to the hydraulic drive line, the power driving device of the concrete pumping device provided by the present invention has three powers The output route, the first power output route is: the first power source drives the first hydraulic pump, the first hydraulic pump drives the hydraulic motor to rotate, the hydraulic motor drives the second hydraulic pump through the transfer case, and the second hydraulic pump drives the working element
  • the second power output route is: the second power source drives the second hydraulic pump through the transfer case, and the second hydraulic pump drives the working component to work
  • the third power output route is: the first power source drives the first hydraulic pressure The pump, while the second power source drives the second hydraulic pump through the transfer case, and the first hydraulic pump and the second hydraulic pump merge to drive the working element to work.
  • the power driving device of the concrete pumping device provided by the invention has the third power output route, the power requirement of the high-pressure large-displacement concrete pumping device can be met, and the requirements of the high-level pumping can be met, thereby greatly improving Pumping performance of concrete pumping equipment.
  • the first power source or the second power source can be used for power supply during low-pressure pumping, and the first power source and the second power source are used for power supply during high-pressure pumping, the concrete pumping equipment is improved. The adaptability of working conditions reduces the cost per concrete during high/low pressure pumping, thus achieving high economic benefits.
  • FIG. 1 is a schematic diagram of a schematic diagram of a dual power drive device for a conventional construction machine
  • FIG. 2 is a schematic diagram of a power driving device of a concrete pumping device provided by the present invention
  • FIG. 3 is a schematic structural view of an embodiment of a power driving device for a concrete pumping device provided by the present invention
  • Figure 4 is a schematic view showing the structure of another embodiment of the power driving device of the concrete pumping device provided by the present invention.
  • Fig. 5 is a structural schematic view showing still another embodiment of the power driving device of the concrete pumping apparatus provided by the present invention. Description of the reference numerals
  • first power source 1: first power source; 2: second power source; 3: first hydraulic pump; 4: first hydraulic line; 5: drive shaft; 6: hydraulic motor; 7: transfer case; Pump; 9: second hydraulic line; 10: second check valve; 11: reversing valve; 12: first cartridge valve; 13: second cartridge valve; 14: working element; 15: two three Through-way valve; 16: hydraulic drive line; 17: first reversing valve; 18: second reversing valve; 19: first check valve; 20: first relief valve; 21: first pressure gauge 22: third check valve; 23: filling valve; 24: second relief valve; 25: second pressure gauge; 26: fuel tank; 27: filter.
  • drive connection means the passage of a power transmission member (for example, a transmission shaft, a hydraulic pipe), unless otherwise stated. Roads, etc. are connected to achieve power transfer when needed;
  • hydraulic connection means connecting through hydraulic lines (and necessary hydraulic components) to achieve hydraulic oil transfer when needed.
  • the present invention provides a power driving device for a concrete pumping apparatus, which includes a first power source 1, a second power source 2, a first hydraulic pump 3, a hydraulic motor 6, a transfer case 7, and a second hydraulic pump 8.
  • the first power source 1 is drivingly connected to the first power input end of the transfer case 7 through the first hydraulic pump 3 and the hydraulic motor 6, and the second power source 2 is drivingly connected to the transfer a second power input end of the transfer case 7 , the power output end of the transfer case 7 is connected to the second hydraulic pump 8 , and the second hydraulic pump 8 hydraulically drives the working element 14 via the hydraulic drive line 16 , wherein
  • the oil outlet of the first hydraulic pump 3 is hydraulically connected to the hydraulic drive line 16.
  • the power driving device of the concrete pumping device provided by the present invention since the oil outlet of the first hydraulic pump 3 is hydraulically connected to the hydraulic drive line 16, the power driving device of the concrete pumping device provided by the present invention has The three power output routes, the first power output route is: the first power source 1 drives the first hydraulic pump 3, the first hydraulic pump 3 drives the hydraulic motor 6 to rotate, and the hydraulic motor 6 drives the second hydraulic pump 8 through the transfer case 7.
  • the second hydraulic pump 8 drives the working element 14 to operate;
  • the second power output route is: the second power source 2 drives the second hydraulic pump 8 through the transfer case 7, and the second hydraulic pump 8 drives the working element 14 to operate;
  • the third power output route is: the first power source 1 drives the first hydraulic pump 3, while the second power source 2 drives the second hydraulic pump 8 through the transfer case 7, and the first hydraulic pump 3 and the second hydraulic pump 8 merge
  • the working element 14 is then driven to work. Since the power driving device of the concrete pumping device provided by the invention has the third power output route, the power requirement of the high-pressure large-displacement concrete pumping device can be met, and the requirements of the high-level pumping can be met, thereby greatly improving Pumping performance of concrete pumping equipment.
  • first power source 1 or the second power source 2 can be used for power supply during low pressure pumping, and high pressure pumping At the same time, the first power source 1 and the second power source 2 are used to provide power, so that the adaptability of the concrete pumping equipment is improved, and the cost per concrete during high/low pressure pumping is reduced, thereby achieving a higher Economic benefits.
  • the oil outlet of the first hydraulic pump 3 can be hydraulically connected to the hydraulic motor 6 through the first hydraulic line 4 and hydraulically connected to the hydraulic drive line 16 via the second hydraulic line 9.
  • the oil outlet of the first hydraulic pump 3 is selectively communicated with the oil inlet of the hydraulic motor 6 or with the hydraulic pressure
  • the drive line 16 is in communication, preferably, the device includes a hydraulic control element for controlling the oil outlet of the first hydraulic pump 3 to selectively communicate with the oil inlet of the hydraulic motor 6 or with the hydraulic drive Line 16 is connected.
  • the hydraulic control element can be appropriately selected to achieve the above functions.
  • the hydraulic control element includes a first cartridge valve 12 and a second cartridge valve 13, and the two working ports of the first cartridge valve 12 are respectively Hydraulically connected to the oil outlet of the first hydraulic pump 3 and the oil inlet of the hydraulic motor 6, the two working ports of the second cartridge valve 13 and the outlet of the first hydraulic pump 3, respectively
  • the oil port and the hydraulic drive line 16 are hydraulically connected.
  • the opening and closing of the first cartridge valve 12 and the second cartridge valve 13 the opening and closing of the first hydraulic line 4 and the second hydraulic line 9 can be conveniently controlled, thereby selectively achieving the first A power output route or a third power output route.
  • This type of control can be used when the displacement of the first hydraulic pump 3 is relatively large.
  • the hydraulic control element comprises a reversing valve 11, the two working ports of the reversing valve 11 respectively
  • the control port of the first cartridge valve 12 and the control port of the second cartridge valve 13 are hydraulically connected.
  • the reversing valve 11 can appropriately select various reversing valves, and the three-position four-way reversing valve is shown in FIG.
  • the three-position four-way reversing valve When it is required to work with the first power output route, the three-position four-way reversing valve is in the left position, the first cartridge valve 12 is opened, and the second cartridge valve 13 is closed; when the second power output route is required to work The three-position four-way reversing valve is in the middle position, and the first cartridge valve 12 and the second cartridge valve 13 are both closed; when the third power output route is required to be operated, the three-position four-way reversing valve is in the right position. , the first The cartridge valve 12 is closed and the second cartridge valve 13 is opened.
  • the oil inlet of the reversing valve 11 is hydraulically connected to the oil outlet of the first hydraulic pump 3.
  • oil can be supplied to the switching valve 11 through the first hydraulic pump 3, so that it is not necessary to additionally provide an oil supply device, which is convenient to arrange and save energy.
  • the oil inlet of the reversing valve 11 is hydraulically connected to the oil outlet of the second hydraulic pump 8.
  • the oil can be supplied to the reversing valve 11 through the second hydraulic pump 8, so that it is not necessary to additionally provide an oil supply device, which is convenient to arrange and save energy.
  • the oil inlet of the reversing valve 11 is simultaneously hydraulically connected to the oil outlet of the first hydraulic pump 3 and the oil outlet of the second hydraulic pump 8.
  • the oil inlet of the reversing valve 11 may also be hydraulically connected only to the oil outlet of the first hydraulic pump 3 or the oil outlet of the second hydraulic pump 8.
  • the first cartridge valve 12 and the second cartridge valve are ensured. 13 is opened and closed, preferably, a first check valve 19 is connected in series between the oil inlet of the reversing valve 11 and the oil outlet of the first hydraulic pump 3, the reversing A second check valve 10 is connected in series to the line between the oil inlet of the valve 11 and the oil outlet of the second hydraulic pump 8.
  • the hydraulic control element includes a two-position three-way switching valve 15, and an oil inlet of the two-position three-way switching valve 15 is hydraulically connected to the first An oil outlet of a hydraulic pump 3, one working port is hydraulically connected to the oil inlet of the hydraulic motor 6, and the other working port is hydraulically connected to the hydraulic drive line 16.
  • the opening and closing of the first hydraulic line 4 and the second hydraulic line 9 can be conveniently controlled, thereby selectively implementing the first power output route or the third line. Power output route.
  • a first reversing valve 17 is serially connected to the hydraulic drive line 16, and an oil outlet of the first hydraulic pump 3 is hydraulically connected to the first The hydraulic drive line 16 between a reversing valve 17 and the second hydraulic pump 8.
  • Such a solution can be used when the displacements of the first hydraulic pump 3 and the second hydraulic pump 8 are small, and the flow rate of the oil discharged from the first hydraulic pump 3 and the oil discharged from the second hydraulic pump 8 is merged. It is smaller than the rated flow rate of the first reversing valve 17. In this case, the oil discharged from the first hydraulic pump 3 may first merge with the oil discharged from the second hydraulic pump 8, and may be reversed by the first switching valve 17.
  • the hydraulic drive line 16 is connected in series with a first reversing valve 17, and the oil outlet of the first hydraulic pump 3 passes through the second reversing direction.
  • Valve 18 is hydraulically coupled to the hydraulic drive line 16 between the first diverter valve 17 and the working element 14.
  • This solution can be used in the case where one of the reversing valves cannot satisfy the total displacement of the first hydraulic pump 3 and the second hydraulic pump 8.
  • the oil discharged from the first hydraulic pump 3 and the oil discharged from the second hydraulic pump 8 may be reversed by the second switching valve 18 and the first reversing valve 17, respectively, and then merged. Preventing the flow requirements from being met in the case where only one directional control valve is provided.
  • the first reversing valve 17 and the second reversing valve 18 can appropriately select various reversing valves, such as electro-hydraulic reversing valves.
  • the first power source 1 is used to drive the first hydraulic pump 3 to operate, and the second power source 2 is generally connected to the second power input end of the transfer case 7 via the transmission shaft 5, thereby driving the second hydraulic pump 8 jobs.
  • the first power source 1 may be an electric motor or an engine
  • the second power source 2 may also be an electric motor or an engine.
  • the engine can be a gasoline engine or a diesel engine.
  • the first power source 1 is an electric motor and the second power source 2 is an engine.
  • the second hydraulic pump 8 can be driven by the electric motor in the place where the external power source is used, thereby achieving the purpose of energy saving and environmental protection, and reducing the use cost; the second hydraulic pump 8 is driven by the engine in the place where the power is cut off or no external power source is used, Easy to use.
  • the concrete pumping device is a vehicle-mounted concrete pump or a concrete pump truck
  • the engine can advantageously select the chassis engine.
  • a first relief valve 20 for achieving overload protection is connected in series to the hydraulic line of the first hydraulic pump 3, and the first relief valve 20 can function as a safety valve.
  • the hydraulic circuit of the first hydraulic pump 3 may further be provided with a pressure measuring branch, and the pressure measuring branch is provided with a first pressure gauge 21 for measuring the pumping of the first hydraulic pump 3 pressure.
  • a third check valve 22 is provided between the oil port A and the port B of the hydraulic motor 6 which are mutually inlet and outlet.
  • the port B of the hydraulic motor 6 is further provided with a liquid filling branch, and the liquid filling branch is provided with a filling valve 23, for example, a conventional one-way valve can be selected as the filling valve 23.
  • a second relief valve 24 for realizing overload protection is connected in series to the hydraulic line of the second hydraulic pump 8, and the second relief valve 24 can function as a safety valve.
  • the hydraulic circuit of the second hydraulic pump 8 may further be provided with a pressure measuring branch, and the pressure measuring branch is provided with a second pressure gauge 25 for measuring the pumping of the second hydraulic pump 8. pressure.
  • the first hydraulic pump 3 may be a fixed pump or a variable pump, and may be selected according to specific needs.
  • the structures of the two-way valve 10, the two-position three-way reversing valve 15, the first reversing valve 17, and the second reversing valve 18 are well known to those skilled in the art, and are not described herein again.
  • the working element 14 is typically a pumping cylinder for concrete pumping equipment.
  • the present invention provides a concrete pumping apparatus including the above-described power driving apparatus.
  • the concrete pumping device can be of various types, such as a vehicle-mounted hybrid Concrete pump or concrete pump truck.
  • the first power source 1 when the first power output route is adopted, the first power source 1 is activated, the second hydraulic circuit 9 is disconnected by the hydraulic control element, and the first hydraulic circuit 4 is turned on.
  • the first power source 1 drives the first hydraulic pump 3 to operate, the first hydraulic pump 3 drives the hydraulic motor 6 through the first hydraulic line 4, and the hydraulic motor 6 drives the second hydraulic pump 8 through the transfer case 7,
  • the second hydraulic pump 8 drives the working element 14.
  • the second power output route is adopted, the second power source 2 is activated, and when the second power source 2 is the chassis engine, the connection between the second power source 2 and the rear axle transmission shaft is also disconnected through the transfer case 7.
  • the second power source 2 is caused to drive the second hydraulic pump 8 through the transfer case 7, and the second hydraulic pump 8 drives the working element 14.
  • the first power source 1 and the second power source 2 are activated, the first hydraulic line 4 is disconnected by the hydraulic control element, and the second hydraulic line 9 is turned on, when the first When the second power source 2 is the chassis engine, the connection between the second power source 2 and the rear axle transmission shaft is also disconnected through the transfer case 7, so that the first power source 1 drives the first hydraulic pump 3 to operate, and the second power source 2, the second hydraulic pump 8 is driven by the transfer case 7, and the oil discharged from the first hydraulic pump 3 is merged with the oil discharged from the second hydraulic pump 8 through the second hydraulic line 9, and the combined oil is driven together.
  • Element 14 works.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention se rapporte à un dispositif d'entraînement d'un équipement de pompage de béton, qui comprend une première source d'énergie (1), une seconde source d'énergie (2), une première pompe hydraulique (3), un moteur hydraulique (6), un carter de transmission (7) et une seconde pompe hydraulique (8). La première source d'énergie (1) est reliée par entraînement à une première extrémité d'entrée d'énergie du carter de transmission (7) par l'intermédiaire de la première pompe hydraulique (3) et du moteur hydraulique (6), et la seconde source d'énergie (2) est reliée par entraînement à une seconde extrémité d'entrée d'énergie du carter de transmission (7). L'extrémité de sortie d'énergie du carter de transmission (7) est reliée par entraînement à la seconde pompe hydraulique (8). La seconde pompe hydraulique (8) entraîne par voie hydraulique un composant de travail (14) par l'intermédiaire d'une conduite d'entraînement hydraulique (16), un orifice de sortie d'huile de la première pompe hydraulique (3) étant relié par voie hydraulique à la conduite d'entraînement hydraulique (16). Le dispositif d'entraînement permet d'améliorer les performances de pompage et la capacité d'adaptation aux conditions de travail de l'équipement de pompage de béton, ce qui permet de réaliser un bénéfice économique plus important.
PCT/CN2011/078570 2011-02-24 2011-08-18 Dispositif d'entraînement d'équipement de pompage de béton et équipement de pompage de béton Ceased WO2012113208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110045442.4 2011-02-24
CN2011100454424A CN102650303A (zh) 2011-02-24 2011-02-24 混凝土泵送设备的动力驱动装置和混凝土泵送设备

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WO2012113208A1 true WO2012113208A1 (fr) 2012-08-30

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CN (1) CN102650303A (fr)
WO (1) WO2012113208A1 (fr)

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CN107059589B (zh) * 2017-04-24 2019-02-26 陆厚铭 一种桩梁式桥整体结构及施工工艺和施工机械
CN109340199A (zh) * 2018-12-03 2019-02-15 三汽车制造有限公司 泵送机械液压系统
EP4375517A1 (fr) * 2022-11-28 2024-05-29 Scanwill ApS Dispositif de connection hydraulique pour vérin hydraulique simple effet

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CN201386294Y (zh) * 2009-03-11 2010-01-20 长沙中联重工科技发展股份有限公司 工程机械用双动力装置
CN201963620U (zh) * 2011-02-24 2011-09-07 长沙中联重工科技发展股份有限公司 混凝土泵送设备的动力驱动装置和混凝土泵送设备

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