WO2015158162A1 - 一种工程机械用液压油箱总成及具有其的工程机械 - Google Patents

一种工程机械用液压油箱总成及具有其的工程机械 Download PDF

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WO2015158162A1
WO2015158162A1 PCT/CN2015/070270 CN2015070270W WO2015158162A1 WO 2015158162 A1 WO2015158162 A1 WO 2015158162A1 CN 2015070270 W CN2015070270 W CN 2015070270W WO 2015158162 A1 WO2015158162 A1 WO 2015158162A1
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oil tank
construction machine
tank
hydraulic
swing cylinder
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PCT/CN2015/070270
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English (en)
French (fr)
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杨滨
张强
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北汽福田汽车股份有限公司
北京智科投资管理有限公司
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Publication of WO2015158162A1 publication Critical patent/WO2015158162A1/zh

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    • 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
    • F15B1/26—Supply reservoir or sump assemblies

Definitions

  • the invention relates to the technical field of engineering machinery, in particular to a hydraulic oil tank assembly for engineering machinery and an engineering machine therewith.
  • a construction machine such as a concrete pump truck (hereinafter referred to as a pump truck) has a work drive mode in which a hydraulic pump is used to deliver pressurized oil to a hydraulic actuator.
  • a container is required to accommodate the circulating hydraulic oil.
  • a hydraulic oil tank is usually used as the container.
  • the hydraulic fuel tank of the pump truck is mainly divided into an independent hydraulic oil tank and an integrated hydraulic oil tank.
  • the independent hydraulic tank has become the mainstream configuration of the current pump truck due to the maintenance convenience, but the independent hydraulic tank increases the weight of the pump truck. Due to the large impact of the oil pumping cylinder of the pumping truck, the simple hydraulic fuel tank weight loss has the risk of cracking the fuel tank structure.
  • the integrated hydraulic tank is mainly located inside the support table. This type of hydraulic tank is inconvenient to clean and inconvenient to repair, mainly used on the swing pump truck.
  • the independent hydraulic tank is a separate component that is attached to the pumping platform and is equipped with oil return and suction lines.
  • the weight of the entire tank is about 300kg, which is not conducive to the reduction of the weight of the pump.
  • the oil return and oil absorption are installed on a fuel tank. Once the oil return shock causes the fuel tank to crack, the hydraulic oil needs to be discharged from the fuel tank for maintenance. This inconvenient integrated hydraulic fuel tank also exists.
  • the above two fuel tank structures are all welded with steel plates, and the paint is sprayed.
  • the hydraulic oil cooling requires a larger cooler and takes up a large space, which is not conducive to the overall arrangement of the pump truck.
  • a utility model patent No. 201020116942.3 entitled "A concrete pump truck and its split type hydraulic oil tank” discloses a split type hydraulic oil tank.
  • the split hydraulic tank is used in a hydraulic system of a concrete pump truck, including a left tank and a right tank connected by pipes, symmetrically It is disposed on both sides of the sub-frame of the concrete pump truck.
  • a split type hydraulic oil tank is also disclosed in Chinese Utility Model Patent No. 200920278580.5, which is entitled "Hydraulic Fuel Tank Layout Improved Flow Crane".
  • the split hydraulic oil tank includes: a first hydraulic oil tank disposed on one side of the boom, and an air filter and a return oil filter at a top thereof; and a second hydraulic oil tank symmetrically disposed on the other side of the boom The top is provided with an air cleaner and a return oil filter.
  • the first hydraulic oil tank and the second hydraulic oil tank are provided with an oil supply interface and a plurality of oil drain interfaces.
  • the existing two split hydraulic fuel tank patents only divide the hydraulic oil tank into two parts, which are separated for separation, without considering the adverse effects of the oil return impact of the pumping cylinder and the increase of the overall weight after the split. Negative Effects.
  • the present invention provides a hydraulic oil tank assembly for a construction machine, comprising: a main oil tank disposed on a body of the construction machine; and a swing cylinder return oil tank disposed at the construction machine a vehicle body spaced apart from the main oil tank, a return port of the tilting cylinder of the construction machine is in communication with the swing cylinder return oil tank; and a connecting oil pipe connecting the main oil tank and the swing cylinder to return oil tank.
  • the hardness of the material of the pendulum return oil tank is greater than the hardness of the material of the main tank.
  • the swing cylinder return oil tank is a steel oil tank; the main oil tank is an aluminum alloy fuel tank.
  • the volume of the swing cylinder return oil tank is smaller than the volume of the main tank.
  • the swing cylinder return oil tank is disposed at the rear of the construction machine.
  • the bottom of the swing tank return oil tank is higher than the bottom of the main tank.
  • the hydraulic oil tank assembly for construction machinery further comprises a swing cylinder return pipe, and the swing cylinder return pipe is disposed perpendicular to a bottom plate of the swing cylinder return oil tank.
  • the present invention also provides a construction machine comprising a hydraulic oil tank assembly for a construction machine according to the present invention.
  • the construction machine is a concrete pump truck.
  • the work machine further includes a boom that provides support to the boom when the boom is in the stowed state.
  • the construction machine further includes a cooling device disposed around the communication oil pipe for cooling the communication oil pipe.
  • the present invention also provides a construction machine comprising the hydraulic oil tank assembly for a construction machine as described above.
  • the construction machine is a concrete pump truck.
  • the work machine further includes a boom that provides support to the boom when the boom is in the stowed state.
  • the construction machine further includes a cooling device disposed around the communication oil pipe for cooling the communication oil pipe.
  • the hydraulic oil tank assembly for construction machinery of the present invention separately sets the swing cylinder return oil tank, so that the oil tank with the smaller volume of the swing cylinder is used to withstand the oil return pressure of the swing cylinder, and can be easily replaced when the oil return tank of the swing cylinder is damaged.
  • the oil tank of the pendulum cylinder can be replaced, or the oil tank of the pendulum cylinder with smaller volume can be strengthened, so that the entire hydraulic oil tank assembly can achieve a better balance between higher strength and lighter weight.
  • FIG. 1 is a schematic view showing the installation state of a hydraulic oil tank assembly for a construction machine according to an embodiment of the present invention.
  • FIG. 1 is a schematic view showing the installation state of a hydraulic oil tank assembly for a construction machine according to an embodiment of the present invention.
  • the hydraulic oil tank assembly for construction machinery shown in FIG. 1 includes a main oil tank 1, a communication oil pipe 2, a swing cylinder return pipe 3, and a swing cylinder return oil tank 4.
  • the present invention provides a hydraulic oil tank assembly for a construction machine, comprising: a main oil tank disposed on a body of the construction machine; a swing cylinder return oil tank, which is disposed on the body of the construction machine, and The main oil tanks are spaced apart and have a volume smaller than a volume of the main oil tank: and a communication oil pipe that communicates the main oil tank and the swing cylinder return oil tank.
  • the present invention provides a hydraulic oil tank assembly for a construction machine, comprising: a main oil tank disposed on a body of the construction machine; a swing cylinder return oil tank, which is disposed on the body of the construction machine, and The main oil tanks are spaced apart, the oil return port of the tilting cylinder of the construction machine is in communication with the swing cylinder return oil tank, and the connecting oil pipe is connected to the main oil tank and the swing cylinder return oil tank.
  • a hydraulic oil tank assembly for a construction machine hydraulic hydraulic tank assembly includes: a main oil tank, a swing cylinder return oil tank, and a communication oil pipe.
  • the main oil tank is disposed on the body of the construction machine, and the installation manner can be arbitrarily set as needed, for example, bolted to the walking platform of the construction machine.
  • the swing cylinder return oil tank is also disposed on the body of the construction machine and spaced apart from the main tank.
  • the swing cylinder return oil tank is for receiving oil return from the swing cylinder.
  • the volume and volume of the pendulum return oil tank are smaller than the volume and volume of the main tank.
  • the communication oil pipe communicates with the main oil tank and the swing cylinder return oil tank.
  • the hydraulic oil tank assembly of the construction machine of the above embodiment separately sets the swing cylinder return oil tank, and the main fuel tank is used for Retaining the rest of the hydraulic oil and returning oil from other hydraulic components, since the oil return of the pendulum cylinder is only a small part of the total hydraulic oil in the hydraulic system of the construction machinery, the smaller the cylinder is returned to the fuel tank. It can withstand the oil return pressure of the pendulum cylinder.
  • the fuel tank can be set to be lighter in weight, so that the entire hydraulic tank assembly can achieve a better balance between higher strength and lighter weight.
  • the volume of the swing cylinder return oil tank 4 is smaller than the volume of the main tank 1. More preferably, the volume or volume of the swing cylinder return oil tank 4 is less than or equal to one fifth of the volume or volume of the main tank 1, for example, the volume of the swing cylinder return oil tank 4 is equal to five cents of the volume of the main tank 1. One, one eighth, one tenth or one twenty one.
  • the hardness of the material of the pendulum return oil tank is greater than the hardness of the material of the main tank.
  • the swing tank return oil tank 4 is a steel tank
  • the main tank 1 is an aluminum alloy tank.
  • the swing cylinder return oil tank 4 is disposed at the rear of the construction machine, that is, near the oil return port of the swing cylinder, and the bottom of the swing cylinder return oil tank 4 is higher than the bottom of the main oil tank 1. This facilitates the setting of the swing cylinder return oil tank 4 and facilitates the flow of oil from the swing cylinder back to the oil tank 4 into the main tank 1.
  • the construction machinery monthly hydraulic oil tank assembly further includes a swing cylinder return pipe, and the swing cylinder return pipe 3 is disposed perpendicular to the bottom plate of the swing cylinder return oil tank 1 . That is, the swing cylinder return pipe 3 passes through the bottom of the swing cylinder back to the oil tank 1 and extends upward perpendicular to the bottom plate. That is, the swing cylinder return pipe is vertically installed at the bottom of the swing cylinder return oil tank. In this way, the oil return of the pendulum cylinder does not directly impact the side wall of the swing cylinder back to the oil tank 1, and the impact of the angle of the return pipe on the return pipe mounting seat can be avoided.
  • the present invention also provides a construction machine comprising the hydraulic oil tank assembly for a construction machine according to the present invention.
  • the construction machine is a concrete pump truck.
  • the work machine further includes a boom that provides support to the boom when the boom is in the stowed state.
  • a boom 5 in a stowed state is also shown.
  • the top of the swing cylinder returning oil tank 4 provides support to the boom 5. That is to say, the swing cylinder return oil tank 4 is simultaneously used as a support for the boom 5. Thereby, the need for the boom support can be reduced, and even the boom support device can be omitted.
  • the hydraulic oil tank assembly of the above embodiment is used in a construction machine, and can be used to return the oil return pressure of the swing cylinder with a small-sized swing cylinder returning oil tank, and can be easily replaced when the oil return tank of the swing cylinder is broken.
  • the cylinder return oil tank or can strengthen the smaller swing tank return oil tank, so that the entire hydraulic tank assembly can achieve a better balance between higher strength and lighter weight.
  • the work machine further includes a cooling device disposed about the communication oil pipe for cooling the communication oil pipe.
  • the oil returning oil tank of the pendulum cylinder is placed at the main support of the cloth boom, and the position is higher than the main oil.
  • the height of the box is good for returning oil to the main tank, and it can replace the function of the main support of the boom.
  • the main fuel tank can be made of a lightweight metal material with a high thermal conductivity (such as aluminum alloy) to facilitate heat dissipation.
  • the invention can not only effectively reduce the weight, but also solve the problem of cracking of the structural member caused by the oil return impact.
  • the existing independent fuel tanks are made of steel plates, and the oil return joint mounts need to be strengthened. Lightweight materials have poor weldability and limit the use of separate fuel tanks in the event of cracking and repairing.
  • the invention optimizes the pipeline arrangement by installing the oil return pipeline with hydraulic impact on the steel tank with smaller volume, and can solve the cracking problem.
  • the oil return pipe of the pendulum cylinder is greatly shortened compared with the previous one, and the connecting oil pipe between the oil returning oil tank and the main oil tank of the pendulum cylinder can take cooling measures to cool the hydraulic oil.
  • the hardness of the material used in the main tank does not need to be very high, and it is preferably a material that is lightweight and has good thermal conductivity, for example, made of an aluminum alloy, which can reduce the weight and avoid the cracking problem caused by the hydraulic oil return impact.
  • the main fuel tank made of aluminum alloy can effectively dissipate heat and reduce the heat dissipation pressure of the hydraulic cooling system.
  • the oil return oil tank and the main oil tank of the swing cylinder are connected through the communication oil pipe to realize the circulation of the hydraulic oil, and the oil suction joint is arranged on the main oil tank.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

一种工程机械用液压油箱总成及具有其的工程机械，所述工程机械用液压油箱总成包括：主油箱（1），其设置在所述工程机械的车身上；摆缸回油油箱（4），其设置在所述工程机械的车身上，且与所述主油箱（1）间隔开，且其体积小于所述主油箱（1）体积；以及连通油管（2），其连接所述主油箱（1）和所述摆缸回油油箱（4）。该工程机械用液压油箱总成单独设置摆缸回油油箱，从而以体积较小的摆缸回油油箱来承受摆缸回油压力，在摆缸回油油箱破损时，能够容易地更换所述摆缸回油油箱。

Description

一种工程机械用液压油箱总成及具有其的工程机械 技术领域
本发明涉及工程机械技术领域，特别是涉及一种工程机械用液压油箱总成及具有其的工程机械。
背景技术
诸如混凝土泵车(以下简称泵车)的工程机械，具工作驱动方式为以液压泵把压力油输送到液压执行元件。在液压油循环过程中，需要一个容器来容纳循环的液压油。通常采用液压油箱来用作所述容器。
目前泵车液压油箱主要分为独立液压油箱和集成液压油箱。独立液压油箱因维修方便成为目前泵车的主流配置，但独立液压油箱增加了泵车的重量。因泵车摆缸回油存在较大的冲击，简单的液压油箱减重存在油箱结构开裂风险。
集成液压油箱主要设在支撑台内部，这类液压油箱清洗不便，维修不便，主要在摆腿泵车上使用。
独立液压油箱为独立的部件，固定在泵车走台上，上面安装有回油和吸油管路。整个油箱重量300kg左右，不利于泵车重量的降低。且回油和吸油都装在一个油箱上，一旦回油冲击导致油箱开裂，需要把液压油从油箱里放出再进行维修，这个不便集成液压油箱也存在。
上述的两种油箱结构，均采用钢板焊接整个油箱，喷漆，液压油冷却需要采用较大的冷却器，占用较大的空间，不利于泵车的总体布置。
名称为“一种混凝土泵车及其分体式液压油箱”的中国实用新型专利第201020116942.3号公开了一种分体式液压油箱。所述分体式液压油箱用于混凝土泵车的液压系统，包括通过管道相连接的左油箱和右油箱，对称地 设置于所述混凝土泵车的副车架两边。
名称为“液压油箱布局改良的流动式起重机”的中国实用新型专利第200920278580.5号也公开了一种分体式液压油箱。所述分体式液压油箱包括：第一液压油箱，设置在吊臂的一侧，其顶部设有空气滤清器和回油滤清器；第二液压油箱，对称设置在吊臂的另一侧，其顶部设置有空气滤清器和回油滤清器。第一液压油箱和第二液压油箱上设置有供油接口和多个泄油接口。
现有的两个分体式液压油箱专利仅仅是把液压油箱分为两部分，为了分体而分体，没有考虑泵车摆缸回油冲击的不利影响以及分体后带来整体重量的上升等不利影响。
发明内容
本发明的目的在于提供一种工程机械用液压油箱总成来克服或至少减轻现有技术的上述缺陷。
为实现上述目的，本发明提供一种工程机械用液压油箱总成，其中，包括：主油箱，其设置在所述工程机械的车身上；摆缸回油油箱，其设置在所述工程机械的车身上，且与所述主油箱间隔开，所述工程机械的摆缸的回油口与所述摆缸回油油箱连通；以及连通油管，其连通所述主油箱和所述摆缸回油油箱。
优选地，所述摆缸回油油箱的材料的硬度大于所述主油箱的材料的硬度。
优选地，所述摆缸回油油箱为钢质油箱；所述主油箱为铝合金油箱。
优选地，所述摆缸回油油箱的容积小于所述主油箱的容积。
优选地，所述摆缸回油油箱设置在工程机械后部处。
优选地，所述摆缸回油油箱的底部高于所述主油箱的底部。
优选地，所述工程机械用液压油箱总成进一步包括摆缸回油管，所述摆缸回油管垂直于所述摆缸回油油箱的底板设置。
本发明还提供一种工程机械，其中，包括如本发明所述的工程机械用液压油箱总成。
优选地，所述工程机械为混凝土泵车。
优选地，所述工程机械进一步包括臂架，在臂架处于收起状态时，所述摆缸回油油箱的顶部对所述臂架提供支撑。
优选地，所述工程机械进一步包括冷却装置，所述冷却装置设置在所述连通油管周围，用于对所述连通油管进行冷却。
本发明还提供一种工程机械，所述工程机械包括如上所述的工程机械用液压油箱总成。
优选地，所述工程机械为混凝土泵车。
优选地，所述工程机械进一步包括臂架，在臂架处于收起状态时，所述摆缸回油油箱的顶部对所述臂架提供支撑。
优选地，所述工程机械进一步包括冷却装置，所述冷却装置设置在所述连通油管周围，用于对所述连通油管进行冷却。
本发明的工程机械用液压油箱总成单独设置摆缸回油油箱，从而以体积较小的摆缸回油油箱来承受摆缸回油压力，在摆缸回油油箱破损时，能够更换容易地更换所述摆缸回油油箱，或者能够对体积较小的摆缸回油油箱进行加强，使得整个液压油箱总成能够在较高的强度与较轻的重量两个方面实现较好的平衡。
附图说明
图1是根据本发明一实施例的工程机械用液压油箱总成的安装状态示意图。
附图标记：
1 主油箱 4 摆缸回油油箱
2 连通油管 5 臂架
3 摆缸回油管    
具体实施方式
为使本发明实施的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行更加详细的描述。在附图中，自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。所描述的实施例是本发明一部分实施例，而不是全部的实施例。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。下面结合附图对本发明的实施例进行详细说明。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明保护范围的限制。
图1是根据本发明一实施例的工程机械用液压油箱总成的安装状态示意图。
图1所示的工程机械用液压油箱总成包括主油箱1、连通油管2、摆缸回油管3和摆缸回油油箱4。
本发明提供一利工程机械用液压油箱总成，其中，包括：主油箱，其设置在所述工程机械的车身上；摆缸回油油箱，其设置在所述工程机械的车身上，且与所述主油箱间隔开，且其体积小于所述主油箱的体积：以及连通油管，其连通所述主油箱和所述摆缸回油油箱。
本发明提供一种工程机械用液压油箱总成，其中，包括：主油箱，其设置在所述工程机械的车身上；摆缸回油油箱，其设置在所述工程机械的车身上，且与所述主油箱间隔开，所述工程机械的摆缸的回油口与所述摆缸回油油箱连通；以及连通油管，其连通所述主油箱和所述摆缸回油油箱。
根据本发明一宽泛实施例的工程机械用液压油箱总成工程机械用液压油箱总成包括：主油箱、摆缸回油油箱以及连通油管。所述主油箱设置在所述工程机械的车身上，安装方式可以根据需要任意设置，例如通过螺栓固定连接在工程机械的走台上。所述摆缸回油油箱也设置在所述工程机械的车身上，且与所述主油箱间隔开。所述摆缸回油油箱用于接收来自摆缸的回油。有利的是，优选地，所述摆缸回油油箱的体积及容积小于所述主油箱的体积及容积。所述连通油管连通所述主油箱和所述摆缸回油油箱。
由于工程机械中摆缸的回油压力较大，为了避免该摆缸的回油对主油缸的冲击，上述实施例的工程机械用液压油箱总成单独设置摆缸回油油箱，主油箱用于容纳其余的液压油以及从其他液压部件的回油，由于摆缸的回油量仅是工程机械的液压系统中液压油总量的一小部分，因此以体积较小的摆缸回油油箱来承受摆缸回油压力，在摆缸回油油箱破损时，能够更换容易地更换所述摆缸回油油箱，或者能够对体积较小的摆缸回油油箱进行加强，并且该摆缸回油油箱可以设置为重量较轻，从而使得整个液压油箱总成能够在较高的强度与较轻的重量两个方面实现较好的平衡。
摆缸回油油箱4的容积小于主油箱1的容积。更优选的是，摆缸回油油箱4的容积或体积小于或等于主油箱1的容积或体积的五分之一，例如，摆缸回油油箱4的体积等于主油箱1的体积的五分之一、八分之一、十分之一或二十七分之一。
有利的是，所述摆缸回油油箱的材料的硬度大于所述主油箱的材料的硬度，优选地，摆缸回油油箱4为钢质油箱，主油箱1为铝合金油箱。从而有利于实现总强度与总重量、总容积的均衡。
参见图1，摆缸回油油箱4设置在工程机械的后部处，即接近摆缸的回油口的位置，且摆缸回油油箱4的底部高于主油箱1的底部。这有利于摆缸回油油箱4的设置，而且有利于摆缸回油油箱4中的油流至主油箱1中。
如图1所示，所述工程机械月液压油箱总成进一步包括摆缸回油管，摆缸回油管3垂直于摆缸回油油箱1的底板设置。也就是说，摆缸回油管3穿过摆缸回油油箱1的底板并垂直于所述底板向上延伸。即所述摆缸回油管竖直安装在所述摆缸回油油箱的底部处。这样，摆缸回油不会直接冲击摆缸回油油箱1的侧壁，而且可以避免因回油管安装存在角度对回油管安装座的冲击。
本发明还提供一种工程机械，其中，包括本发明所述的工程机械用液压油箱总成。优选地，所述工程机械为混凝土泵车。
优选地，所述工程机械进一步包括臂架，在臂架处于收起状态时，所述摆缸回油油箱的顶部对所述臂架提供支撑。
图中还示出了处于收起状态的臂架5。在臂架5处于收起状态时，摆缸回油油箱4的顶部对臂架5提供支撑。也就是说，摆缸回油油箱4同时用作臂架5的支撑。从而，能够减少对臂架支撑的需求，甚至可以省略臂架支撑装置。
将上述实施例的液压油箱总成用于工程机械，能够以体积较小的摆缸回油油箱来承受摆缸回油压力，在摆缸回油油箱破损时，能够更换容易地更换所述摆缸回油油箱，或者能够对体积较小的摆缸回油油箱进行加强，使得整个液压油箱总成能够在较高的强度与较轻的重量两个方面实现较好的平衡。
有利的是，所述工程机械进一步包括冷却装置，所述冷却装置设置在所述连通油管周围，用于对所述连通油管进行冷却。
本发明的目的旨在提供一种分体式独立液压油箱，将油箱分为摆缸回油油箱和主油箱。其中，摆缸回油油箱放在布料杆主支撑处，位置比主油 箱高，利于回油到主油箱，又可代替布料杆主支撑的功能。主油箱可采用导热率高的轻质金属材料(比如铝合金)制作，利于散热。本发明既可以有效降低重量，还可以解决回油冲击所导致的结构件开裂问题。
因为泵车摆缸回油存在较高液压冲击，现有独立油箱均采用钢板制作，且需加强回油接头安装座。轻质材料的焊接性差，一旦出现开裂补焊困难，限制了其在独立油箱的使用。本发明通过把具有液压冲击的回油管路安装在容积较小的钢质油箱上，优化了管路布置，可解决开裂问题。而且摆缸回油管比之前大幅缩短，摆缸回油油箱和主油箱之间连通油管可以采取冷却措施对液压油进行降温。主油箱所采用的材料的硬度不需要很高，而且优选为轻质且导热性较好的材料，例如采用铝合金制作，既可以减重又避免了液压回油冲击所导致的开裂问题。另外，由于铝合金的高导热性，采用铝合金制作的主油箱又可以有效进行散热，减轻液压冷却系统的散热压力。摆缸回油油箱和主油箱通过连通油管连通，实现液压油流通，吸油接头布置在主油箱上。
最后需要指出的是：以上实施例仅用以说明本发明的技术方案，而非对其限制。尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (12)

  1. 一种工程机械用液压油箱总成，其特征在于，包括：
    主油箱，其设置在所述工程机械的车身上；
    摆缸回油油箱，其设置在所述工程机械的车身上，且与所述主油箱间隔开，且其体积小于所述主油箱的体积；以及
    连通油管，其连通所述主油箱和所述摆缸回油油箱。
  2. 如权利要求1所述的工程机械用液压油箱总成，其特征在于，
    所述工程机械的摆缸的回油口与所述摆缸回油油箱连通。
  3. 如权利要求1所述的工程机械用液压油箱总成，其特征在于，所述摆缸回油油箱的材料的硬度大于所述主油箱的材料的硬度。
  4. 如权利要求3所述的工程机械用液压油箱总成，其特征在于，所述摆缸回油油箱为钢质油箱；所述主油箱为铝合金油箱。
  5. 如权利要求1所述的工程机械用液压油箱总成，其特征在于，所述摆缸回油油箱的容积小于所述主油箱的容积。
  6. 如权利要求1所述的工程机械用液压油箱总成，其特征在于，所述摆缸回油油箱设置在工程机械后部处。
  7. 如权利要求1所述的工程机械用液压油箱总成，其特征在于，所述摆缸回油油箱的底部高于所述主油箱的底部。
  8. 如权利要求1所述的工程机械用液压油箱总成，其特征在于，所述工程机械用液压油箱总成进一步包括摆缸回油管，所述摆缸回油管垂直于所述摆缸回油油箱的底板设置。
  9. 一种工程机械，其特征在于，包括如权利要求1-8中任一项所述的工程机械用液压油箱总成。
  10. 如权利要求9所述的工程机械，其特征在于，所述工程机械为混凝土泵车。
  11. 如权利要求9所述的工程机械，其特征在于，所述工程机械进一步包括臂架，在臂架处于收起状态时，所述摆缸回油油箱的顶部对所述臂架提供支撑。
  12. 如权利要求9所述的工程机械，其特征在于，所述工程机械进一步包括冷却装置，所述冷却装置设置在所述连通油管周围，用于对所述连通油管进行冷却。
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