WO2012100527A1 - 混凝土泵送设备 - Google Patents

混凝土泵送设备 Download PDF

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Publication number
WO2012100527A1
WO2012100527A1 PCT/CN2011/078771 CN2011078771W WO2012100527A1 WO 2012100527 A1 WO2012100527 A1 WO 2012100527A1 CN 2011078771 W CN2011078771 W CN 2011078771W WO 2012100527 A1 WO2012100527 A1 WO 2012100527A1
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Prior art keywords
power source
motor
hydraulic system
concrete pumping
power
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PCT/CN2011/078771
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English (en)
French (fr)
Inventor
万梁
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Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
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Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
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Publication of WO2012100527A1 publication Critical patent/WO2012100527A1/zh
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous

Definitions

  • the present invention relates to engineering equipment, and more particularly to a concrete pumping apparatus. Background technique
  • Concrete pumping equipment typically includes tow pumps, on-board pumps, and pump trucks.
  • the existing pump truck includes a plurality of working devices such as a stirring device 211 , a cleaning device 212 , a dispensing device 221 , a pumping device 231 , a boom device 241 , and a leg device 242 .
  • These working devices are driven by a plurality of hydraulic systems to perform corresponding actions, such as agitating cleaning hydraulic system 21 for driving agitating device 211 and cleaning device 212, for distributing hydraulic system 22 for dispensing device 221,
  • the pumping hydraulic system 23 for driving the pumping device 231, and the boom leg hydraulic system 24 for driving the boom device 241 and the leg device 242.
  • a power source 1 engine or motor
  • the working conditions of the pump truck are more complicated. Under certain operating conditions, all hydraulic systems are required to work together, while in other operating conditions, only one hydraulic system is required (for example, only the agitated cleaning hydraulic system 21 operates under standby conditions). In addition, due to factors such as the difference in concrete conveyance distance and height, and the difference in the number of concrete, the load on each hydraulic system changes greatly, resulting in a large difference in the suction power of the hydraulic system (output power of the power source) as a function of operating conditions. Depending on the complexity of the operating conditions, in order to ensure the ideal energy consumption of the complete machine, the power source for driving the hydraulic system is required to have a very wide power matching characteristic. At present, due to the use of only one power source 1, existing concrete pumping equipment (e.g., tow pumps, pump trucks, etc.) has at least the following disadvantages:
  • the object of the present invention is to provide a concrete pumping device which can meet the wide power matching characteristics of various working devices under various working conditions, can reduce energy consumption, increase the service life of hydraulic components and reduce the installed capacity. Cost and overall weight.
  • the present invention provides a concrete pumping apparatus including a plurality of work devices and a plurality of hydraulic systems for driving the plurality of work devices, wherein the plurality of hydraulic systems Driven by multiple power sources.
  • one power source drives a hydraulic system.
  • one power source drives at least two hydraulic systems.
  • the power source is a motor and different motors have different power ratings.
  • the working device comprises a stirring device, a cleaning device, a dispensing device and a pumping device, wherein: the stirring device and the cleaning device are driven by a stirring cleaning hydraulic system and a corresponding stirring cleaning power source; Driven by a dispensing hydraulic system and a corresponding distributed power source; the pumping device is driven by a pumping hydraulic system and a corresponding pumping power source.
  • the distribution power source and the agitation cleaning power source share one power source.
  • the one power source shared is a first motor
  • the pumping power source is a second motor
  • the power of the first motor is less than the power of the second motor.
  • the working device further comprises a boom device and a leg device, wherein: the boom device and the leg device are driven by a boom leg hydraulic system and a corresponding boom leg power source; preferably The boom leg power source and the distribution power source share a power source and the one power source is a third motor.
  • the concrete pumping apparatus includes a chassis and an engine for driving the chassis to travel.
  • the concrete pumping device since the power source only drives the corresponding hydraulic system, the concrete pumping device provided by the invention satisfies the wide power matching characteristics of each working device under various working conditions, and significantly improves the power source.
  • the load rate which significantly reduces the energy consumption; under certain working conditions, the phenomenon that the hydraulic system that stops working is not idling is avoided, and the service life of components such as power source and hydraulic components is prolonged; and according to the supply of power sources on the market,
  • the use of multiple power sources in accordance with the present invention reduces the overall installed cost and overall weight of the present invention with respect to the use of a single power source.
  • Figure 1 is a prior art example of a pump truck.
  • FIG. 2 is an embodiment of the present invention taking a tow pump as an example.
  • Fig. 3 is an embodiment of the present invention taking a pump truck as an example.
  • a concrete pumping apparatus including a plurality of work devices and a plurality of hydraulic systems for driving the plurality of work devices, and the plurality of hydraulic systems are A power source drive.
  • a plurality of hydraulic systems are driven by only one power source, and thus there are many drawbacks and deficiencies as described in the background section.
  • a plurality of power sources are used to drive a plurality of hydraulic systems, and different corresponding modes may be selected according to specific situations, for example, one power source corresponds to one hydraulic system, or one power source corresponds to two or More hydraulic systems, the choice of power source is very flexible, greatly improving the power matching between the power source and the hydraulic system and the working device, not only can reduce energy consumption, reduce installation cost and reduce the weight of the whole machine, but also Extending the service life of power sources and related components has very beneficial practical significance and very high promotion value.
  • the power source used in the present invention is preferably a motor, and usually different motors should have different power ratings (because different working devices generally have different power requirements), Thereby achieving optimal power matching.
  • the concrete pumping equipment mainly includes the tow pump and the pump truck.
  • the following will take the tow pump and the pump truck as examples.
  • the embodiments of the present invention and its advantageous effects are described in detail.
  • FIG. 2 is an embodiment of the present invention taking a tow pump as an example.
  • the tow pump generally includes a stirring device 211, a cleaning device 212, a dispensing device 221, and a pumping device 231, wherein: the agitating device 211 and the cleaning device 212 are agitated and cleaned by a hydraulic system 21 and corresponding agitating The cleaning power source is driven; the dispensing device 221 is driven by a dispensing hydraulic system 22 and a corresponding distributed power source; the pumping device 231 is driven by the pumping hydraulic system 23 and a corresponding pumping power source.
  • the distribution power source and the agitation cleaning power source may share a single power source.
  • the one power source shared is the first motor 11, and the pumping power source is the second motor 12, and the power of the first motor 11 is smaller than the power of the second motor 12.
  • the rated power consumption of the tow pump is 110 kW, wherein the required power of the pumping hydraulic system 23 is 89 kW, and the sum of the required powers of the distribution hydraulic system 22 and the agitation cleaning hydraulic system 21 is 21 kW. Since the required power of the agitation cleaning hydraulic system 21 and the distribution hydraulic system 22 is small and the load variation is small, it is preferable to share one power source.
  • the pumping hydraulic system 23 has a large working load and a large change in operating conditions, so it is preferable to use a separate power source. .
  • each power source is a motor.
  • the distributed power source and the agitation cleaning power source share a power source, that is, the first motor 11 has a rated power of 22 kW ; the pumping power source is the second motor 12, and the rated power is 90 kW.
  • the power source 1 is a motor of llOkw in order to meet the power requirement of the whole machine.
  • the cost of this motor is 14,000 yuan and the weight is 1000kg.
  • the working conditions of the concrete pump include pumping conditions, waiting conditions and cleaning conditions.
  • the stirring device 211, the cleaning device 212, the distributing device 221, and the pumping device 231 all operate, and the first motor 11 and the second motor 12 are simultaneously turned on, the pumping hydraulic system 23, the distribution hydraulic system 22
  • the agitation cleaning hydraulic system 21 is in a working state.
  • a single power source is configured and a dual motor power source is configured, and the performance of the whole machine is the same.
  • the second motor 12 can be operated. Closing, thereby stopping the operation of the pumping hydraulic system 23. If a single power source 1 is used, in order to ensure the operation of the stirring device 211, the pumping hydraulic system 23 driving the pumping device 231 is in an unnecessary idle state and the single power source 1 has a low load rate, thereby causing the whole The machine consumes a relatively high amount of energy, and the service life of the hydraulic components of the pumping hydraulic system 23 is also unnecessarily lost. At this time, the performance of the whole machine equipped with the dual motor is better than that of the single power source.
  • the dual-motor tow pump has good working condition adaptability.
  • other advantages are analyzed as follows:
  • the tow pump is powered by a single power source 1, the pumping hydraulic system 23 and the distribution hydraulic system 22 are idling under the waiting and cleaning conditions, and only the agitation cleaning hydraulic system 21 works, and the power consumption is 21 kW, then the power is
  • the source load rate is about 19.1%.
  • the tow pump uses a dual motor, only the first motor 11 needs to be started under this condition, and the power source load rate is about 95.5%.
  • the load rate is increased by approximately 76.4%, thereby significantly reducing energy loss.
  • Fig. 3 is another embodiment of the present invention taking a pump truck as an example.
  • the pump truck Compared to a tow pump, the pump truck primarily adds a boom assembly 241 and a leg assembly 242, which are typically driven by a boom leg hydraulic system 24. Since the power consumption of the boom device 241 and the leg device 242 is small and various operating conditions are possible, it is preferable that the driving boom leg hydraulic system 24 and other hydraulic systems share a power source, preferably, and The hydraulic system 22 shares a power source (i.e., the third motor 13), while the agitation cleaning hydraulic system 21 uses the first motor 11 alone, and the pumping hydraulic system 23 uses the second motor 12 alone. Depending on the actual situation, the boom leg hydraulic system 24 can also share a power source with the agitator cleaning hydraulic system 21, in order to avoid repetition, it is not exemplified.
  • the working conditions of the pump truck include pumping conditions, waiting conditions, cleaning conditions, and boom leg extension conditions.
  • the stirring device 211, the cleaning device 212, the distributing device 221, and the pumping device 231 all work, and the boom device 241 and the leg device 242 need to be on standby at any time, so the first motor 11 needs to be turned on at the same time.
  • the second motor 12 and the third motor 13, correspondingly, the agitation cleaning hydraulic system 21, the distribution hydraulic system 22, the pumping hydraulic system 23, and the boom leg hydraulic system 24 are all in operation, and are equipped with a single power source and equipment.
  • the performance of the three-motor power source is basically the same.
  • the stirring device 211 Under the condition of waiting, in order to avoid the solidification of the concrete in the hopper, keeping the stirring device 211 working, it is necessary to open the first motor 11 to ensure the operation of the stirring cleaning hydraulic system 21, which is not in this working condition.
  • the pumping device 231 is required to operate, and the second motor 12 can be turned off to stop the operation of the pumping hydraulic system 23. Since the dispensing device 221 is not required to operate, and the boom device 241 and the leg device 242 are also selectively operated, the third motor 13 can be selectively turned on or off.
  • a single power source 1 is used, then in order to ensure the operation of the stirring device 211, the pumping device 231 and the distributing device 221, the arm device 241 and the corresponding hydraulic system of the leg device 242, which do not need to work, are not required to be idling and single.
  • the power source 1 has a low load rate, which results in high energy consumption of the whole machine. In addition, it also unnecessarily loses the service life of the hydraulic components of the corresponding idling hydraulic system. At this time, the performance of the whole machine equipped with the three-motor power source is better than the single power. The overall performance of the source.
  • pump trucks generally include a chassis and a top (ie, various work devices).
  • each of the power sources described above is for various working devices regardless of the power source of the chassis.
  • it should at least include an engine for driving the chassis, since the chassis and the engine driving the chassis are independent of the inventive aspects of the present invention, and therefore no longer Narration.
  • the agitation device and the cleaning device may each have a separate hydraulic system and motor, the boom leg hydraulic system may share a motor with other hydraulic systems, etc.
  • the agitation device and the cleaning device may each have a separate hydraulic system and motor, the boom leg hydraulic system may share a motor with other hydraulic systems, etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Description

混凝土泵送设备
技术领域
本发明涉及工程设备, 尤其涉及一种混凝土泵送设备。 背景技术
目前, 随着各种混凝土泵送工程难度不断加大, 这就要求使用的混凝 土泵送设备本身结构也越来越复杂。 混凝土泵送设备通常包括拖泵、 车载 泵和泵车。
如图 1所示, 以泵车为例, 现有的泵车包括多个工作装置如搅拌装置 211、 清洗装置 212、 分配装置 221、 泵送装置 231、 臂架装置 241和支腿装 置 242, 这些工作装置由多个液压系统驱动以执行相应的动作, 这些液压系 统例如包括用于驱动搅拌装置 211和清洗装置 212的搅拌清洗液压系统 21, 用于驱动分配装置 221的分配液压系统 22, 用于驱动泵送装置 231的泵送 液压系统 23, 以及用于驱动臂架装置 241和支腿装置 242的臂架支腿液压 系统 24。 目前国内外同行业, 均采用一个动力源 1 (发动机或者电机) 驱 动上述多个液压系统 21、 22、 23、 24。
泵车的工况比较复杂。 在某些工况下, 需要所有液压系统一起工作, 而在另外的工况下, 仅需要一个液压系统工作 (例如, 在待料工况下只有 搅拌清洗液压系统 21 工作)。 另外, 因为混凝土输送距离和高度差异、 混 凝土标号差异等因素, 造成各液压系统的负载变化较大, 从而导致液压系 统的吸入功率 (动力源的输出功率) 随工况变化差异也很大。 根据工况的 复杂性, 为了确保整机具有理想的能耗, 就要求驱动液压系统的动力源具 有非常宽的功率匹配特性。 目前, 由于仅采用一个动力源 1, 从而导致现有 的混凝土泵送设备 (例如拖泵、 泵车等) 至少具有以下缺点:
( 1 ) 由于工况的复杂性, 导致单一动力源 1很难满足各个工作装置的 全负载范围功率匹配, 从而在某些工况下出现动力源 1 负荷率低、 能耗高 的现象;
(2 ) 因为要维持某个液压系统工作, 致使另外不需要工作的液压系统 中的某些液压元件也都处于空转工作状态, 既增加了能量损耗, 又降低了 元件的使用寿命;
( 3 )对于需要高压、 大方量作业的混凝土泵送设备, 由于装机功率要 求高, 但其成本与重量不是线性增长的, 一般分区间 (拐点) 呈加速增长 趋势, 从而导致装机成本和整机重量大幅增加。
因此, 需要一种既能满足复杂工况下各个工作装置的较宽的功率匹配 又能减低能耗、 增加各液压系统元件使用寿命, 同时又能减轻装机成本和 整机重量的混凝土泵送设备。 发明内容
本发明的目的是提供一种混凝土泵送设备, 该混凝土泵送设备既能满 足各种工况下各工作装置的较宽功率匹配特性又能减低能耗、 增加液压元 件使用寿命并能降低装机成本和整机重量。
为了实现上述目的, 本发明提供一种混凝土泵送设备, 该混凝土泵送 设备包括多个工作装置和用于驱动该多个工作装置的多个液压系统, 其特 征在于, 所述多个液压系统由多个动力源驱动。
优选地, 一个动力源对应驱动一个液压系统。
优选地, 一个动力源对应驱动至少两个液压系统。
优选地, 所述动力源为电机, 且不同的电机具有不同的额定功率。 优选地, 所述工作装置包括搅拌装置、 清洗装置、 分配装置和泵送装 置, 其中: 所述搅拌装置和所述清洗装置由搅拌清洗液压系统和对应的搅 拌清洗动力源驱动; 所述分配装置由分配液压系统和对应的分配动力源驱 动; 所述泵送装置由泵送液压系统和对应的泵送动力源驱动。 优选地, 所述分配动力源和所述搅拌清洗动力源共用一个动力源。 优选地, 共用的所述一个动力源为第一电机, 所述泵送动力源为第二 电机, 所述第一电机的功率小于所述第二电机的功率。
优选地, 所述工作装置还包括臂架装置和支腿装置, 其中: 所述臂架 装置和所述支腿装置由臂架支腿液压系统和对应的臂架支腿动力源驱动; 优选地, 所述臂架支腿动力源和所述分配动力源共用一个动力源且该一个 动力源为第三电机。
优选地, 所述混凝土泵送设备包括底盘和用于驱动底盘行走的发动机。 通过上述技术方案, 由于其中的动力源只驱动本身对应的液压系统, 本发明提供的混凝土泵送设备在满足各种工况下各工作装置较宽功率匹配 特性的同时, 显著提高了动力源的负荷率, 从而显著降低能耗; 特定工况 下, 避免了停止工作液压系统不必要空转的现象, 延长了动力源及液压元 件等零部件的使用寿命; 另外根据市场上动力源的供应情况, 使用本发明 涉及的多个动力源相对于使用单一动力源, 减小了整机装机成本和整机重 本发明的其它特征和优点将在随后的具体实施方式中予以详细说明。 附图说明
附图是用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与下面的具体实施方式一起用于解释本发明, 但并不构成对本发明的限制。 在附图中:
图 1是以泵车为例的现有技术。
图 2是以拖泵为例的本发明的一种实施方式。
图 3是以泵车为例的本发明的一种实施方式。
附图标记说明
1 动力源 11 第一电机 12 第二电机 13 第三电机
21 搅拌清洗液压系统 22 分配液压系统
23 泵送液压系统 24 臂架支腿液压系统
211 搅拌装置 212 清洗装置
221 分配装置 231 泵送装置
241 臂架装置 242 支腿装置 具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是, 此处所描述的具体实施方式仅用于说明和解释本发明, 并不用于限制本发 明。
根据本发明的基本发明构思, 提供一种混凝土泵送设备, 该混凝土泵 送设备包括多个工作装置和用于驱动该多个工作装置的多个液压系统, 并 且所述多个液压系统由多个动力源驱动。
在现有技术中, 多个液压系统仅由一个动力源驱动, 因此存在如背景 技术部分所述的诸多缺陷和不足。 为了克服这些缺陷和不足, 在本发明中, 采用多个动力源驱动多个液压系统, 可以根据具体情况选择不同的对应方 式, 例如一个动力源对应一个液压系统, 或者一个动力源对应两个或者更 多个液压系统, 动力源的选用非常灵活, 极大地提高了动力源与液压系统 以及工作装置之间的功率匹配特性, 不仅可以降低能耗、 减少装机成本和 减轻整机重量, 而且还可以延长动力源及相关零部件的使用寿命, 具有非 常有益的实践意义和非常高的推广价值。
考虑到实际情况的需要, 在本发明中所用的动力源优选情况下为电机, 且通常情况下不同的电机应具有不同的额定功率 (因为一般情况下不同的 工作装置具有不同的功率需求), 从而实现最佳的功率匹配。
混凝土泵送设备主要包括拖泵和泵车, 下面将分别以拖泵和泵车为例 来详细描述本发明的实施方式及其有益效果。
图 2是以拖泵为例的本发明的一种实施方式。
如图 2所示,拖泵一般包括搅拌装置 211、清洗装置 212、分配装置 221 和泵送装置 231, 其中: 所述搅拌装置 211和所述清洗装置 212由搅拌清洗 液压系统 21和对应的搅拌清洗动力源驱动; 所述分配装置 221由分配液压 系统 22和对应的分配动力源驱动; 所述泵送装置 231 由泵送液压系统 23 和对应的泵送动力源驱动。 作为一种例子, 所述分配动力源和所述搅拌清 洗动力源还可以共用一个动力源。 另外, 优选地, 共用的所述一个动力源 为第一电机 11, 所述泵送动力源为第二电机 12, 所述第一电机 11 的功率 小于所述第二电机 12的功率。
作为一个实施例, 拖泵的额定消耗功率为 110kw, 其中泵送液压系统 23的需求功率为 89kw,分配液压系统 22和搅拌清洗液压系统 21的需求功 率之和为 21kw。 因为搅拌清洗液压系统 21和分配液压系统 22的需求功率 较小且负载变化小, 所以优选共用一个动力源, 泵送液压系统 23工作负载 大且工况变化也大, 所以优选使用单独的动力源。 优选地, 各个动力源为 电机。 所述分配动力源和所述搅拌清洗动力源共用一个动力源, 即第一电 机 11, 额定功率为 22kw; 泵送动力源为第二电机 12, 额定功率为 90kw。
在现有技术中, 如果采用一个动力源 1, 为了满足整机功率的需求, 动 力源 1为 llOkw的电机。 这一个电机的成本为 14000元, 重量为 1000kg。 在本发明中, 若采用第一电机 11和第二电机 12, 则电机成本为 2900 (第 一电机 11 ) +8900 (第二电机 12 ) =11800元, 重量为 185 (第一电机 11 ) +667 (第二电机 12) =852kg, 由此可以看出, 采用两个电机相对于使用单 一电机, 能够使整机装机成本和重量降低 15%以上。 以上数据参照某供应 商提供的常用电机参数, 如表 1所示。 表 1
Figure imgf000008_0001
实际工作中, 混凝土拖泵的工况包括泵送工况、 待料工况和清洗工况。 在泵送工况下, 搅拌装置 211、 清洗装置 212、 分配装置 221以及泵送装置 231均进行工作,需同时开启第一电机 11与第二电机 12,泵送液压系统 23、 分配液压系统 22、搅拌清洗液压系统 21都处于工作状态, 此时配置单一动 力源与配置双电机动力源, 整机性能相同。
在待料工况下, 为了避免料斗中的混凝土凝固, 只需要保持第一电机 11运行以保证搅拌清洗液压系统 21工作,此工况中不需泵送装置 231工作, 可以将第二电机 12关闭, 从而停止泵送液压系统 23的工作。 若采用单一 动力源 1, 则此时为了保证搅拌装置 211工作, 则导致驱动泵送装置 231的 泵送液压系统 23 处于不必要的空转状态以及单一动力源 1 负荷率低的现 象, 从而造成整机能耗较高, 另外也不必要的损耗了泵送液压系统 23的液 压元件的使用寿命, 此时配备双电机的整机性能优于配置单一动力源的整 机性能。
在清洗工况下, 同样只需保持第一电机 11运行, 以保证搅拌清洗液压 系统 21工作以驱动清洗装置 212, 此工况与上述待料工况相同, 配备双电 机的整机性能优于配置单一动力源的整机性能。
根据以上工况对比分析, 采用双电机的拖泵具有很好的工况适应性, 除了上述能够减轻整机装机成本及重量的优势外, 其他优势分析如下: 拖泵采用单一动力源 1 提供动力时, 在待料和清洗工况下, 泵送液压 系统 23和分配液压系统 22空转, 只有搅拌清洗液压系统 21工作, 其消耗 功率为 21kw, 则此时动力源负荷率约为 19.1%; 在拖泵采用双电机时, 该 工况下只需要启动第一电机 11, 动力源的负荷率约为 95.5%。 负荷率提高 约 76.4%, 从而显著降低能量损耗。
此外, 在待料和清洗工况中, 避免了泵送液压系统 23不必要的空转, 延长了第一电机 22及泵送液压系统 23中液压元件的使用寿命。
图 3是以泵车为例的本发明的另一种实施方式。
与拖泵相比, 泵车主要是增加了臂架装置 241和支腿装置 242, 这两个 工作装置通常是由一个臂架支腿液压系统 24驱动。 因为臂架装置 241和支 腿装置 242 的功率消耗较小且各个工况都有可能使用, 所以优选驱动臂架 支腿液压系统 24和其它液压系统共用一个动力源即可, 优选地, 和分配液 压系统 22共用一个动力源(即第三电机 13 ), 而搅拌清洗液压系统 21单独 使用第一电机 11, 泵送液压系统 23单独使用第二电机 12。 根据实际情况, 臂架支腿液压系统 24也可以和搅拌清洗液压系统 21共用一个动力源, 为 了避免重复此处不做过多举例说明。
实际工作中, 泵车的工况包括泵送工况、 待料工况、 清洗工况以及臂 架支腿展收工况。
在泵送工况下, 搅拌装置 211、 清洗装置 212、 分配装置 221以及泵送 装置 231均进行工作, 臂架装置 241和支腿装置 242则需要随时待命, 所 以需要同时开启第一电机 11、 第二电机 12和第三电机 13, 相应的, 搅拌 清洗液压系统 21、 分配液压系统 22、 泵送液压系统 23以及臂架支腿液压 系统 24都处于工作状态, 此时配备单一动力源与配备三电机动力源的整机 性能基本相同。
在待料工况下, 为了避免料斗中的混凝土凝固, 保持搅拌装置 211 工 作, 需要开启第一电机 11 以保证搅拌清洗液压系统 21工作, 此工况中不 需泵送装置 231工作, 可以将第二电机 12关闭, 从而停止泵送液压系统 23 的工作。 因为不需要分配装置 221工作, 而臂架装置 241和支腿装置 242 也是选择性工作, 所以可选择性地开启或关闭第三电机 13。 若采用单一动 力源 1, 则此时为了保证搅拌装置 211工作, 则导致不需要工作的泵送装置 231和分配装置 221、 臂架装置 241以及支腿装置 242的相应液压系统不必 要空转以及单一动力源 1 负荷率低的现象, 从而造成整机能耗较高, 另外 也不必要地损耗了相应空转液压系统液压元件的使用寿命, 此时配备三电 机动力源的整机性能优于单一动力源的整机性能。
在清洗工况下, 同样只需保持第一电机 11运行, 以保证搅拌清洗液压 系统 21工作以驱动清洗装置 212, 此工况与上述待料工况相同, 配备三电 机动力源的整机性能优于单一动力源整机性能。
在臂架支腿展收工况下, 则只需要驱动臂架支腿液压系统 24的第三电 机 13开启,第一电机 11和第二电机 12以及所对应的液压系统均停止运行。 此工况下, 配备三电机动力源的整机性能同样优于单一动力源的整机性能。
另外, 泵车一般包括底盘和上装 (即各种工作装置)。 在本发明中, 上 文所述的各个动力源均是针对各种工作装置而言的, 与底盘的动力源无关。 换言之, 除了上文所述的各种动力源, 对于泵车来说, 其至少还应当包括 用于驱动底盘行走的发动机, 因为底盘以及驱动底盘的发动机与本发明的 发明点无关, 因此不再赘述。
以上结合附图详细描述了本发明的具体实施方式, 但是, 本发明并不 限于上述实施方式中的具体细节, 在本发明的技术构思范围内, 可以对本 发明的技术方案进行多种简单变型, 这些简单变型均属于本发明的保护范 围。 例如, 搅拌装置和清洗装置也可以各自具有独立的液压系统和电机, 臂架支腿液压系统可以与其他液压系统共用一个电机等等, 这些简单变形 对于本领域技术人员来说是很容易想到和实现的。
另外需要说明的是, 在上述具体实施方式中所描述的各个具体技术特 征, 在不矛盾的情况下, 可以通过任何合适的方式进行组合, 例如根据具 体情况改变动力源和液压系统的数量、 种类及对应关系等, 为了避免不必 要的重复, 本发明对各种可能的组合方式不再另行说明。

Claims

权利要求
1、 一种混凝土泵送设备, 该混凝土泵送设备包括多个工作装置和用于 驱动该多个工作装置的多个液压系统, 其特征在于, 所述多个液压系统由 多个动力源驱动。
2、 根据权利要求 1所述的混凝土泵送设备, 其特征在于, 一个动力源 对应驱动一个液压系统。
3、 根据权利要求 1所述的混凝土泵送设备, 其特征在于, 一个动力源 对应驱动至少两个液压系统。
4、根据权利要求 1-3中任意一项所述的混凝土泵送设备,其特征在于, 所述动力源为电机, 且不同的电机具有不同的额定功率。
5、 根据权利要求 4所述的混凝土泵送设备, 其特征在于, 所述工作装 置包括搅拌装置(211 )、清洗装置(212)、分配装置(221 )和泵送装置(231 ), 其中:
所述搅拌装置(211 )和所述清洗装置(212)由搅拌清洗液压系统(21 ) 和对应的搅拌清洗动力源驱动;
所述分配装置(221 ) 由分配液压系统(22)和对应的分配动力源驱动; 所述泵送装置(231 ) 由泵送液压系统(23 )和对应的泵送动力源驱动。
6、 根据权利要求 5所述的混凝土泵送设备, 其特征在于, 所述分配动 力源和所述搅拌清洗动力源共用一个动力源。
7、 根据权利要求 6所述的混凝土泵送设备, 其特征在于, 共用的所述 一个动力源为第一电机 (11 ), 所述泵送动力源为第二电机 (12), 所述第 一电机 (11 ) 的功率小于所述第二电机 (12) 的功率。
8、 根据权利要求 5所述的混凝土泵送设备, 其特征在于, 所述工作装 置还包括臂架装置 (241 ) 和支腿装置 (242), 其中:
所述臂架装置(241 )和所述支腿装置(242)由臂架支腿液压系统(24) 和对应的臂架支腿动力源驱动。
9、 根据权利要求 8所述的混凝土泵送设备, 其特征在于, 所述臂架支 腿动力源和所述分配动力源共用一个动力源且该一个动力源为第三电机
( 13 )。
10、 根据权利要求 8所述的混凝土泵送设备, 其特征在于, 所述混凝 土泵送设备包括底盘和用于驱动底盘行走的发动机。
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