Hydraulic excavator driving system with potential energy recovery function
A hydraulic excavator and drive system technology, applied in the direction of earth mover/excavator, construction, etc., can solve the problems of high cost, throttling loss, complex structure, etc., to reduce energy consumption, avoid complex structure, and improve energy efficiency high effect
Inactive Publication Date: 2014-07-16
中国人民解放军63983部队
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a hydraulic excavator drive system with potential energy recovery, which overcomes the disadvantages of throttling loss, complex structure, and high cost in energy recovery in the prior art
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[0015] The embodiments listed in the present invention are only used to help understand the present invention, and should not be interpreted as limiting the protection scope of the present invention. For those of ordinary skill in the art, they can also Improvements and modifications are made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
[0016] Such as figure 1 As shown, it includes an internal combustion engine 1, a variable displacement hydraulic pump 2 connected to the internal combustion engine, and is characterized in that it also includes a boom control system connected to the variable displacement hydraulic pump 2, a swing control system, a multi-way valve group 18, and The bucket actuator 14 and the arm actuator 16 connected by the multi-way valve group 18;
[0017] The boom control system is used to control the hydraulic cylinder of the boom to realize the up and down...
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The invention relates to the technical field of hydraulic excavator driving systems, in particular to a hydraulic excavator driving system with a potential energy recovery function. The hydraulic excavator driving system comprises an internal combustion engine and a variable-displacement hydraulic pump, and further comprises a movable arm control system, a rotation control system, a multi-way valve set, a bucket actuator and a bucket rod actuator, wherein the variable-displacement hydraulic pump is connected with the internal combustion engine, the movable arm control system is connected with the variable-displacement hydraulic pump, and the bucket actuator and the bucket rod actuator are connected with the multi-way valve set. The hydraulic excavator driving system is used in hydraulic excavators and overcomes the defects of throttling loss, structure complexity, high cost and the like of energy recovery in the prior art.
Description
technical field [0001] The invention relates to the technical field of a hydraulic excavator drive system, in particular to a hydraulic excavator drive system with potential energy recovery. Background technique [0002] Since the hydraulic excavator has a relatively short working cycle and a high frequency of action, the downward potential energy of the boom is considerable during its working process. But at present, the general hydraulic excavator does not recycle the downward potential energy of its boom, so that the downward potential energy of the boom is lost in the form of heat energy at the throttle, resulting in waste of energy, and the heat emitted also affects the life of the machine components. It can be seen that it is imperative to recover energy from the hydraulic excavator arm. [0003] Current hydraulic system energy recovery mostly uses valve control system or hydraulic transformer to realize energy recovery, such as in CN102094434A, adopts negative flow c...
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IPC IPC(8): E02F9/22
Inventor 庄静伟刘津盛锋宣惠平张欲保潘晟菡陈赣邵立福
Owner 中国人民解放军63983部队