WO2015139530A1 - 挖掘机辅助动力节能装置 - Google Patents

挖掘机辅助动力节能装置 Download PDF

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WO2015139530A1
WO2015139530A1 PCT/CN2015/071542 CN2015071542W WO2015139530A1 WO 2015139530 A1 WO2015139530 A1 WO 2015139530A1 CN 2015071542 W CN2015071542 W CN 2015071542W WO 2015139530 A1 WO2015139530 A1 WO 2015139530A1
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Prior art keywords
cylinder
excavator
nitrogen
hydraulic cylinder
control valve
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PCT/CN2015/071542
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English (en)
French (fr)
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樊硕
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樊硕
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Publication of WO2015139530A1 publication Critical patent/WO2015139530A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2271—Actuators and supports therefor and protection therefor
    • 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
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type

Definitions

  • the present invention relates to the field of excavators, and in particular to an excavator auxiliary power saving device.
  • Excavators also known as excavating machinery, are earthmoving machines that use buckets to excavate materials above or below the surface of the carrier and into the transport vehicle or to the stockyard.
  • the materials excavated by the excavator are mainly soil, coal, sediment and pre-pulled soil and rock. From the development of construction machinery in recent years, the development of excavators is relatively fast, and excavators have become one of the most important construction machinery in engineering construction.
  • increasing the power of the engine increases the consumption of the engine and reduces the service life of the engine; while increasing the capacity of the bucket, it also increases the resistance of the boom when working, and at the same time, If the boom has enough force to work, it must increase the power of the engine, thereby increasing engine consumption and reducing the life of the boom and engine.
  • an excavator auxiliary power saving device which comprises a two-cylinder connecting seat, a nitrogen cylinder, a hydraulic cylinder and a control valve;
  • the nitrogen cylinder and the hydraulic cylinder are fixed and arranged in parallel on the double cylinder connecting seat;
  • One end of the nitrogen cylinder with hydraulic oil is connected to one end of the hydraulic cylinder through a control valve;
  • the other end of the nitrogen cylinder is provided with a gas injection hole.
  • control valve is connected to the control system of the excavator through a pilot control tube.
  • both ends of the hydraulic cylinder are connected in parallel with the lift cylinder of the boom of the excavator through the shaft ear.
  • one end of the hydraulic cylinder connected to the control valve is provided with a drain port
  • One end of the nitrogen cylinder connected to the control valve is provided with a drain port.
  • hydraulic cylinder is provided with an exhaust port away from an end connected to the control valve.
  • an integrated control block is disposed on the gas injection hole.
  • the integrated control block includes a pressure gauge, an airing control valve, and an exhaust pressure relief valve.
  • connections are both sealed rigid connections.
  • the excavator auxiliary power saving device adds the piston rod of the hydraulic cylinder to the boom of the excavator, sets the cylinder of the hydraulic cylinder on the base of the excavator, and provides the driving force to the hydraulic cylinder through the nitrogen cylinder.
  • the power is controlled by the control valve, and the entire device does not use the power of the engine of the excavator, thereby increasing the lifting force of the excavator boom without consuming the power of the excavator, thereby increasing the volume of the bucket and
  • the length of the working arm further increases work efficiency and working radius.
  • FIG. 1 is a schematic structural diagram of an auxiliary power saving device for an excavator according to an embodiment of the present invention.
  • 1 upper connecting shaft ear
  • 2 hydraulic cylinder
  • 3 exhaust port
  • 4 rod cavity
  • 5 piston rod
  • 6 cylinder
  • 7 double cylinder connecting seat
  • 8 rodless cavity
  • 9 oil drain
  • 10 lower shaft lug
  • 11 pilot control tube
  • 12 control valve
  • 13 oil chamber
  • 14 nitrogen chamber
  • 15 nitrogen cylinder
  • 16 air injection hole
  • 17 integrated control block .
  • connection or integral connection; may be mechanical connection or electrical connection; may be directly connected, may also be indirectly connected through an intermediate medium, or may be internal communication between the two elements.
  • connection or integral connection; may be mechanical connection or electrical connection; may be directly connected, may also be indirectly connected through an intermediate medium, or may be internal communication between the two elements.
  • the present invention provides an excavator auxiliary power saving device, comprising a two-cylinder connecting seat 7, a nitrogen cylinder 15, a hydraulic cylinder 2 and a control valve 12;
  • the nitrogen cylinder 15 and the hydraulic cylinder 2 are fixed and arranged in parallel on the double cylinder connecting seat 7;
  • One end of the nitrogen cylinder 15 with hydraulic oil is connected to one end of the hydraulic cylinder 2 through a control valve 12;
  • the other end of the nitrogen cylinder 15 is provided with a gas injection hole 16.
  • Nitrogen is a stable inert gas that has been widely used in home appliances, furniture, and automobiles.
  • the gas spring has small volume, large spring force, long stroke, stable operation, precise manufacturing, long service life (about one million times), gentle elastic curve, and no need for pre-tightening. It has metal springs, rubber and air cushions. Elastic components are difficult to accomplish.
  • the large nitrogen gas spring system is difficult to manufacture, high in precision and high in cost.
  • a combination of nitrogen and a hydraulic system, a nitrogen storage tank, i.e., a nitrogen cylinder 15, is then produced using the characteristics of nitrogen.
  • a similar communication device composed of the nitrogen cylinder 15 and the hydraulic cylinder 2 serves as an auxiliary power for lifting of the working device of the excavator and a function of reducing potential energy recovery.
  • the nitrogen cylinder 15 is first injected with a required amount of hydraulic oil through the gas injection hole 16, and the nitrogen cylinder 15 is injected with nitrogen gas of a desired pressure from the gas injection hole 16, and then the gas injection hole 16 is sealed.
  • the nitrogen cylinder 15 is connected to the hydraulic cylinder 2 through the control valve 12, and the entire device is connected in parallel with the boom of the excavator, but is a separate system and is not connected to the hydraulic system of the excavator, and has safety, independence, innovation and convenience. .
  • the entire device moves passively with the boom and does not affect the operation of the excavator's staff.
  • the high-pressure nitrogen gas in the nitrogen cylinder 15 transmits the pressure through the hydraulic oil to the rodless chamber 8 of the hydraulic cylinder 2, providing auxiliary power for the boom lifting, and avoiding excessive operation of the engine during high-power operation. The problem of black smoke occurred.
  • the control valve 12 is installed at the root of the rodless cavity of the oil cylinder to control the flow rate, and functions as a boom anti-drop lock during the boom stop process, which has a great effect on the safety of the excavator work.
  • the height of the hydraulic oil in the nitrogen cylinder 15 is higher than the control during the whole process.
  • the height of the pipe to which the valve 12 is connected, that is, the hydraulic oil in the nitrogen cylinder 15 can smoothly enter the hydraulic cylinder 2.
  • control valve 12 is connected to the control system of the excavator through the pilot control tube 11.
  • the control valve 12 is connected to the control system of the excavator through the pilot control pipe 11, so that the entire auxiliary power saving device can be perfectly combined with the power system of the excavator.
  • both ends of the hydraulic cylinder 2 are connected in parallel with the lift cylinder of the boom of the excavator through the shaft ear.
  • An end of the piston rod 5 of the hydraulic cylinder 2 away from the cylinder barrel 6 is provided with an upper connecting lug 1, and an end of the cylinder barrel 6 away from the piston rod 5 is provided with a lower connecting lug 10.
  • the upper connecting lug 1 and the lower connecting lug 10 are connected to the boom of the excavator via a pin and are connected in parallel with the lift cylinder on the boom to mount the hydraulic cylinder 2 on the excavator.
  • hydraulic cylinder 2 may be connected to the excavator through the shaft ear, or may be connected by other means, as long as the hydraulic cylinder 2 can be mounted on the boom of the excavator, and the hydraulic cylinder 2 can be
  • the piston rod 5 may be operated in accordance with the movement of the boom.
  • one end of the hydraulic cylinder 2 connected to the control valve 12 is provided with a drain port 9;
  • One end of the nitrogen cylinder 15 connected to the control valve 12 is provided with an oil discharge port 9.
  • the nitrogen cylinder 15 and the hydraulic pressure are used.
  • the discharge of the hydraulic oil in the cylinder 2 is more advantageous for the maintenance of the nitrogen cylinder 15 and the hydraulic cylinder 2, thereby avoiding the occurrence of a missed inspection.
  • hydraulic cylinder 2 is provided with an exhaust port 3 away from the end connected to the control valve 12.
  • the hydraulic oil in the device can be discharged through the rodless chamber 8, and the nitrogen in the nitrogen cylinder can be discharged through the exhaust port 3.
  • the exhaust port 3 is disposed on the rod chamber 4 of the hydraulic cylinder, and the rod chamber 4 is communicated with the nitrogen chamber 14 of the nitrogen cylinder 15 through the pipe, so that the movement of the piston rod 5 can accelerate the nitrogen cylinder.
  • the nitrogen in 15 is discharged.
  • an integrated control block 17 is disposed on the gas injection hole 16.
  • An integrated control block 17 is provided on the gas injection hole 16, and various controls such as a pressure such as a nitrogen amount such as a hydraulic oil amount can be performed in the nitrogen cylinder 15.
  • various controls such as a pressure such as a nitrogen amount such as a hydraulic oil amount can be performed in the nitrogen cylinder 15.
  • the integrated control block 17 includes a pressure gauge, an airing control valve, and an exhaust pressure relief valve.
  • the pressure is an essential parameter for the use of the entire device.
  • the entire device cannot function as an auxiliary power, and it is necessary to replenish the power in time, that is, to supplement the hydraulic oil in the nitrogen cylinder 15.
  • Nitrogen entering the oil chamber 13 or the supplemental nitrogen cylinder 15 enters the nitrogen chamber 14, thereby increasing the pressure of the nitrogen cylinder 15.
  • the aeration control valve and the exhaust pressure relief valve are disposed in the integrated control block 17, and the gas charging efficiency and exhaust efficiency of the nitrogen cylinder 15 can be enhanced.
  • connections are both sealed rigid connections.
  • the power-saving device Since the entire device assists the boom of the excavator by the pressure generated by the gas and the liquid, the connection at each joint needs to be sealed, otherwise the gas leakage or the leakage of the hydraulic oil will cause assistance.
  • the power-saving device has insufficient pressure and thus cannot function as an auxiliary power.
  • the entire device can be effectively combined into one unit.
  • the nitrogen in the nitrogen chamber 14 has a pressure, and during the extension of the excavator's boom, the engine drives the boom to be lifted.
  • the control system of the excavator controls the control valve 12 of the auxiliary power saving device.
  • the hydraulic oil in the nitrogen cylinder 15 is opened, the hydraulic oil in the oil chamber 13 is pressed into the rodless chamber 8 of the hydraulic cylinder 2, thereby driving the piston rod of the hydraulic cylinder 2.
  • 5 protrudes in the cylinder 6 of the hydraulic cylinder 2, and plays an auxiliary power role for lifting the boom of the excavator.
  • the boom is lowered due to gravity, and the compression cylinder 2 is compressed.
  • the hydraulic oil in the rodless chamber 8 is pushed out, and enters the oil chamber 13 of the nitrogen cylinder 15 through the connecting pipe, and the hydraulic oil in the oil chamber 13 increases.
  • the nitrogen in the nitrogen chamber 14 is compressed so that the nitrogen is the next extended storage pressure.
  • the whole device is a sealed environment, but when the oil seal ages due to long-term use, the hydraulic oil will overflow through the oil seal gap. When the critical point is reached, the nitrogen will overflow and the device will fail.
  • the device is connected in parallel with the excavator boom, and the oil spill of the cylinder is easy to find, and the device can be disassembled and replaced in time. Even if it is not found in time to cause the device to fail, the nitrogen overflow will not affect the excavator's own safety system. The overflowing nitrogen will not affect the environment.
  • the device only needs to be disassembled and replaced, and can continue to be used without safety hazards.
  • the free-standing device makes the excavator not affect the device in the event of a malfunction, and the device can also play an auxiliary safety role in the repair and failure of the excavator.
  • the excavator auxiliary power saving device attaches the piston rod of the hydraulic cylinder 2 to the boom of the excavator, sets the cylinder of the hydraulic cylinder 2 on the base of the excavator, and supplies the hydraulic cylinder 2 through the nitrogen cylinder 15.
  • the power is increased, the power is controlled by the control valve 12, and the entire device does not use the power of the engine of the excavator, thereby increasing the lifting force of the excavator boom without consuming the power of the excavator, thereby increasing the bucket
  • the volume and boom length further increase the working efficiency and working radius; at the same time, the gravitational potential energy of the working device is also optimized to the maximum during the operation, without consuming additional mechanical energy, saving energy and reducing the hydraulic system. Dynamic load at the heat and slewing bearings; under the premise of the same weight, the operation stability is improved, and a larger working radius or bucket capacity can be obtained, which is very important for improving performance and saving fuel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

一种挖掘机辅助动力节能装置，包括双缸连接座（7）、氮气缸（15）、液压缸（2）和控制阀（12）；氮气缸（15）和液压缸（2）固定且平行设置在双缸连接座（7）上；氮气缸（15）内装有液压油的一端通过控制阀（12）与液压缸（2）的一端连接；氮气缸（15）的另一端设置有注气孔（16）；将液压缸（2）的活塞杆（5）附加在挖掘机的大臂上，将液压缸（2）的缸筒（6）设置在挖掘机的底座上，通过氮气缸（15）给液压缸（2）提供推动力，通过控制阀（12）对动力进行控制，整个装置不使用挖掘机的发动机的动力，增加了挖掘机大臂的举升力，增加了铲斗的容积及工作臂的长度。

Description

挖掘机辅助动力节能装置 技术领域
本发明涉及挖掘机领域，具体而言，涉及一种挖掘机辅助动力节能装置。
背景技术
挖掘机，又称挖掘机械(excavating machinery)，是用铲斗挖掘高于或低于承机面的物料，并装入运输车辆或卸至堆料场的土方机械。挖掘机挖掘的物料主要是土壤、煤、泥沙以及经过预松后的土壤和岩石。从近几年工程机械的发展来看，挖掘机的发展相对较快，挖掘机已经成为工程建设中最主要的工程机械之一。
随着人们生活节奏的加快，对生活质量要求的提高，对挖掘机的使用效率也要求越来越高。究竟怎样才能更有效的提高挖掘机的效率，人们的做法不一，有的是增加发动机功率，以求能使挖掘机大臂的伸张和收缩的速度得到提高；有的是增加铲斗容量，以求能在每一次挖掘时能够多挖掘一些。这些方式在一定的程度上都提高了工作效率，但是，这样的提高却是以降低挖掘机的使用寿命为代价的。也就是说，增加发动机的功率在增加的同时，也加速了发动机的消耗，减少了发动机的使用寿命；在增加了铲斗容量的同时，也增加了大臂工作时的阻力，同时，为了使大臂有足够的力进行工作，就必须提高发动机的功率，从而加剧了发动机的消耗，同时减少了大臂和发动机的使用寿命。
那么究竟如何才能在不减少挖掘机使用寿命的同时，又能提高挖掘机的工作效率呢？这已经成为了人们的一个新的研究课题。
发明内容
本发明的目的在于提供一种挖掘机辅助动力节能装置，以解决上述的问题。
在本发明的实施例中提供了一种挖掘机辅助动力节能装置，其包括双缸连接座、氮气缸、液压缸和控制阀；
氮气缸和液压缸固定且平行设置在双缸连接座上；
氮气缸内装有液压油的一端通过控制阀与液压缸的一端连接；
氮气缸的另一端设置有注气孔。
进一步的，控制阀通过先导控制管与挖掘机的控制系统连接。
进一步的，液压缸的两端通过轴耳与挖掘机的大臂的举升油缸并联相接。
进一步的，液压缸与控制阀连接的一端设置有放油口；
和/或，
氮气缸与控制阀连接的一端设置有放油口。
进一步的，液压缸远离与控制阀连接的一端设置有排气口。
进一步的，注气孔上设置有集成控制块。
进一步的，集成控制块包含压力表、加气控制阀和排气泄压阀。
进一步的，连接均为密封刚性连接。
本发明提供的挖掘机辅助动力节能装置，将液压缸的活塞杆附加在挖掘机的大臂上，将液压缸的缸筒设置在挖掘机的底座上，通过氮气缸给液压缸提供推动力，通过控制阀对动力进行控制，整个装置不使用挖掘机的发动机的动力，从而实现了在不消耗挖掘机功率的情况下，增加了挖掘机大臂的举升力，从而可以增加铲斗的容积及工作臂的长度，进一步增加了工作效率及工作半径。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的挖掘机辅助动力节能装置的结构示意图。图中，1:上连接轴耳；2:液压缸；3:排气口；4:有杆腔；5:活塞杆；6:缸筒；7:双缸连接座；8:无杆腔；9:放油口；10:下连接轴耳；11:先导控制管；12:控制阀；13:油液室；14:氮气室；15:氮气缸；16:注气孔；17:集成控制块。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将对本发明的技术方案进行清楚、完整的描述。显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动的前提下所得到的所有其它实施例，都属于本发明所保护的范围。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，也可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
如图1所示，本发明提供了一种挖掘机辅助动力节能装置，其包括双缸连接座7、氮气缸15、液压缸2和控制阀12；
氮气缸15和液压缸2固定且平行设置在双缸连接座7上；
氮气缸15内装有液压油的一端通过控制阀12与液压缸2的一端连接；
氮气缸15的另一端设置有注气孔16。
氮气是一种稳定的惰性气体，在家电、家具、汽车等领域开始广泛使用。氮气弹簧体积小、弹力大、行程长、工作平稳，制造精密，使用寿命长(约一百万次)，弹力曲线平缓，以及不需要预紧等等，它具有金属弹簧、橡胶和气垫等常规弹性组件难以完成的工作。但大型氮气弹簧系统制作难度大，精度高，成本高。继而使用氮气的特性制作氮气与液压系统的组合体，氮气储能罐，即氮气缸15。使用氮气缸15与液压缸2组成的类似连通器装置，起到挖掘机的工作装置的举升的辅助动力和下降的势能回收的作用。
先通过注气孔16给氮气缸15注入所需量的液压油，再从注气孔16给氮气缸15注入所需压力的氮气，之后将注气孔16密封。
氮气缸15通过控制阀12与液压缸2连接，再将整个装置与挖掘机的大臂并联，但属于独立系统，不与挖掘机液压系统连接，具有安全性、独立性、创新性和便捷性。整个装置随大臂被动动作，不会影响挖掘机工作人员的操作。在举升过程中，氮气缸15内的高压氮气将压力通过液压油传递到液压缸2的无杆腔8内，为大臂举升提供辅助动力，在大功率工作时，避免发动机因过分运作发生冒黑烟的问题。在下降过程中，在不影响原挖掘机势能回收系统及流量再生系统工作的情况下，通过氮气缓冲作用，进一步将大臂下降的势能产生的多余热能抵消，减少对挖掘机各部件的损耗，增加使用寿命。控制阀12安装在油缸的无杆腔根部，控制流量，在大臂停止过程中起到大臂防降锁停作用，对于挖掘机工作的安全性有极大的作用。
需要注意的是，整个过程中，氮气缸15内的液压油的高度要高于与控 制阀12连接的管道的高度，即能使氮气缸15内的液压油顺利进入液压缸2内。
进一步的，控制阀12通过先导控制管11与挖掘机的控制系统连接。
将控制阀12通过先导控制管11与挖掘机的控制系统连接在一起，从而能使整个辅助动力节能装置与挖掘机的动力系统完美结合。
进一步的，液压缸2的两端通过轴耳与挖掘机的大臂的举升油缸并联相接。
液压缸2的活塞杆5远离缸筒6的一端上设置上连接轴耳1，缸筒6远离活塞杆5的一端设置下连接轴耳10。上连接轴耳1与下连接轴耳10通过销轴与挖掘机的大臂连接，且与大臂上的举升油缸相并联，从而将液压缸2安装在挖掘机上。
需要指出的是，液压缸2可以是通过轴耳与挖掘机连接，也可以是用其他方式进行连接，其只要能将液压缸2安装在挖掘机的大臂上，并能使液压缸2的活塞杆5随大臂的动作而进行动作即可。
进一步的，液压缸2与控制阀12连接的一端设置有放油口9；
和/或，
氮气缸15与控制阀12连接的一端设置有放油口9。
氮气缸15和/或液压缸2的下端，即装有液压油的一端设置有放油口9，当整个装置使用时间较久之后，需要对装置进行检修，此时，将氮气缸15和液压缸2内的液压油排出更有利于对氮气缸15和液压缸2的检修，从而避免有漏检的地方出现。
进一步的，液压缸2远离与控制阀12连接的一端设置有排气口3。
同样的道理，当对装置进行检修时，通过无杆腔8可以将装置内的液压油排出，还可以通过排气口3将氮气缸内的氮气排出。
将排气口3设置在液压缸的有杆腔4上，再将有杆腔4通过管道与氮气缸15的氮气室14相通，这样通过活塞杆5的移动，能够加速将氮气缸 15内的氮气排出。
进一步的，注气孔16上设置有集成控制块17。
在注气孔16上设置集成控制块17，可以对氮气缸15内进行各种控制，如压力，如氮气量，如液压油量等。通过一系列的参数控制，可以更有效的知道整个辅助动力节能装置的使用情况，从而能有利于对装置的各种故障产生时的判断。
进一步的，集成控制块17包含有压力表、加气控制阀和排气泄压阀。
压力是整个装置使用的必须的参数，当氮气缸15内的压力为零后，整个装置就无法起到辅助动力的作用了，就需要及时的补充动力，也就是补充氮气缸15内的液压油进入油液室13或补充氮气缸15内的氮气进入氮气室14，从而增加氮气缸15的压力。
将加气控制阀和排气泄压阀设置在集成控制块17内，可以加强氮气缸15的加气效率和排气效率。
进一步的，连接均为密封刚性连接。
因整个装置是通过气体和液体产生的压力对挖掘机的大臂进行辅助动作的，因此，每一个连接处的连接均需进行密封处理，否则不管是气体的泄漏还是液压油的泄漏都会造成辅助动力节能装置的压力不足，从而不能起到辅助动力的作用。
通过刚性连接，可以将整个装置有效的组合成一个整体。
整个装置在初始的时候，氮气室14内的氮气具有压力，在挖掘机的大臂伸张的过程中，发动机驱动大臂提升，此时，挖掘机的控制系统控制辅助动力节能装置的控制阀12打开，使氮气缸15内的液压油在氮气室14内氮气的压力作用下，将油液室13内的液压油压进液压缸2的无杆腔8内，从而驱使液压缸2的活塞杆5在液压缸2的缸筒6内伸出，对挖掘机的大臂的提升起到了辅助的动力作用。
在挖掘机的大臂下降的过程中，大臂由于重力原因下降，压缩液压缸2 的活塞杆5，活塞杆5下压的过程中，将无杆腔8内的液压油压出，通过连接管道进入氮气缸15的油液室13内，油液室13内的液压油增多，将氮气室14内的氮气进行压缩，从而使氮气为下一次的伸张存储压力。
整个装置是独立密封环境，但当长期使用造成油封老化时，液压油会通过油封缝隙溢出，当到达临界点时，氮气溢出，装置失效。本装置与挖掘机大臂并联，油缸溢油很容易发现，可及时将装置拆卸更换油封。即使未能及时发现导致装置失效，氮气溢出也不会影响挖掘机自身的安全系统，溢出的氮气也不影响环境，装置只需要拆卸更换配件便能继续使用，没有安全隐患。独立式装置使得挖掘机在出现故障时不会对本装置产生影响，本装置还能在挖掘机检修及出现故障时起到辅助安全的作用。
本发明提供的挖掘机辅助动力节能装置，将液压缸2的活塞杆附加在挖掘机的大臂上，将液压缸2的缸筒设置在挖掘机的底座上，通过氮气缸15给液压缸2提高动力，通过控制阀12对动力进行控制，整个装置不使用挖掘机的发动机的动力，从而实现在不消耗挖掘机功率的情况下，增加了挖掘机大臂的举升力，从而可以增加铲斗的容积及动臂长度，进一步增加了工作效率和工作半径；同时在作业过程中，工作装置的重力势能也得到最大程度的优化，不消耗额外的机械能，既节省能量，又减少了液压系统的发热和回转轴承等处的动载荷；在机重相同的前提下，作业稳定性提高，可获得更大的作业半径或铲斗容量，这对提高性能、节省燃料等有着非常重要的意义。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (8)

  1. 一种挖掘机辅助动力节能装置，其特征在于，包括双缸连接座、氮气缸、液压缸和控制阀；
    所述氮气缸和所述液压缸固定且平行设置在所述双缸连接座上；
    所述氮气缸内装有液压油的一端通过所述控制阀与所述液压缸的一端连接；
    所述氮气缸的另一端设置有注气孔。
  2. 根据权利要求1所述的挖掘机辅助动力节能装置，其特征在于，所述控制阀通过导控制管与挖掘机的控制系统连接。
  3. 根据权利要求2所述的挖掘机辅助动力节能装置，其特征在于，所述液压缸的两端通过轴耳与挖掘机的大臂的举升油缸并联相接。
  4. 根据权利要求3所述的挖掘机辅助动力节能装置，其特征在于，所述液压缸与所述控制阀连接的一端设置有放油口；
    和/或，
    所述氮气缸与所述控制阀连接的一端设置有放油口。
  5. 根据权利要求4所述的挖掘机辅助动力节能装置，其特征在于，所述液压缸远离与所述控制阀连接的一端设置有排气口。
  6. 根据权利要求5所述的挖掘机辅助动力节能装置，其特征在于，所述注气孔上设置有集成控制块。
  7. 根据权利要求6所述的挖掘机辅助动力节能装置，其特征在于，所述集成控制块包含有压力表、加气控制阀和排气泄压阀。
  8. 根据权利要求1-7中任一项所述的挖掘机辅助动力节能装置，其特征在于，所有连接均为密封刚性连接。
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