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Hybrid power plant for engineering machinery

A technology of hybrid power and power device, which can be used in the field of fuel oil, hydraulic excavators and loaders, and can solve the problems of environmental pollution, inconvenient walking and high cost of use

Inactive Publication Date: 2007-11-28
张晓英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Complex structure
The structure of the diesel engine is very complicated, which brings problems such as high cost, high failure rate, and inconvenient use and maintenance.
[0004] 2. High cost of use
With the depletion of oil resources, the price of diesel continues to rise, resulting in high cost of use
[0005] 3. Pollution of the environment
The diesel engine makes a lot of noise when it is working, and it also emits a large amount of harmful exhaust gas to pollute the environment
[0006] There are also a small number of construction machinery such as excavators that use electric motors as power. The disadvantages are: it is inconvenient to walk, and it cannot be used on construction sites without power supply conditions.

Method used

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  • Hybrid power plant for engineering machinery
  • Hybrid power plant for engineering machinery

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: As shown in Figure 1, this example is two sets of power equipments driving a hydraulic oil pump, and these two sets of power equipments refer to electric motor (1) and diesel engine (2). The diesel engine (2) is connected to the driving disc (6) of the clutch, and the electric motor (1) is connected to the driving disc (5) of the clutch through a transmission mechanism. The transmission mechanism in this example is a belt drive, and the driving pulley (11) is mounted on the motor shaft Above, the driven pulley and the driving disc (5) of the clutch are an integral body, and the two wheels are connected by a transmission belt (10), and the driven disc (7) of the clutch is connected by a clutch shaft and a hydraulic oil pump.

[0014] When the construction machinery is working on the construction site, it basically becomes a fixed operation equipment. When it is connected to the power supply, the working equipment is driven by the electric motor to work, and ...

Embodiment 2

[0016] Embodiment 2: As shown in Figure 2, the electric motor (1) and the diesel engine (2) drive two hydraulic oil pumps (14) and (4) respectively, no clutch is needed to switch between the two sets of power, and the diesel engine drives the hydraulic oil pump (4), the electric motor drives the hydraulic oil pump (14), and the two oil pumps are connected in parallel. After being isolated by the check valves (12) and (13), they do not interfere with each other, and then enter the hydraulic oil cylinder ( 9), drag the work tool to work. The parallel connection mentioned here is just a parallel connection. It does not mean that the diesel engine and the electric motor work at the same time, but that one of them is selected to work according to the situation, and the other does not need to work.

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Abstract

The invention relates to a mixing engine device, more accurately an engine device which can use fuel and electricity, belonging to one part of construction machinery. It is suitable for various construction machineries, especially for hydraulic excavator and loader. The engine device comprises motor (1) and diesel engine (2). After two engine devices are switched by engine switching device they drive hydraulic pump (4) work. In site operation, power supply is provided and the operator is driven by the motor. In the site without power supply or in walking the operator is driven by diesel engine. The engine device is provided with low using cost, small noise, no pollution for circumstance, reliable work, simple maintenance and convenient walk. It can improve attendance rate and operation adaptability.

Description

technical field [0001] A hybrid power device, more precisely, a power device that can use both fuel and electricity, belongs to a part of construction machinery, and is suitable for various construction machinery, especially for hydraulic excavators and loaders. Background technique [0002] Most of the existing construction machinery such as excavators and loaders use diesel engines as power, and the inherent disadvantages are: [0003] 1. Complex structure. The structure of the diesel engine is very complicated, which brings problems such as high cost, high failure rate, and inconvenient use and maintenance. [0004] 2. High cost of use. With the depletion of oil resources, the price of diesel continues to rise, resulting in high cost of use. [0005] 3. Pollution of the environment. The diesel engine makes a lot of noise when it works, and it also emits a large amount of harmful exhaust gas to pollute the environment. [0006] There are also a small amount of constru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/20
Inventor 张晓英王自杨忠平王彬
Owner 张晓英
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