02总体介绍the collectivity introduction.pdf

8/17/2019 02 The collectivity introduction.pdf

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总体介绍

The collectivity introduction


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§ 1.市场背景及发展历史Market background and history of excavator

§ 2.挖掘机基本结构及工作原理The basic structure and principle of excavator

§ 3.柳工挖掘机产品系列The series production of excavator of Liugong

§ 4.D系列挖掘机定义及特点介绍

Definition and characteristics introduction of D series excavato

§ 5.D系列中型挖掘机产品简介The introduction of D series medium-size excavator product.

目录Table of contents


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§1. Market background and history of excavator

1-1挖掘机概述The introduction of excavator

1-2挖掘机发展简史

History of the development of excavator


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1-1 The introduction of excavator

什么是挖掘机？

What is the excavator ?

定义：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。挖掘的物料主要是土壤、煤、泥沙以及经过预松后的土壤和岩石。

Definition : Called excavating machinery too , it is the

machinery that can excavate the soil, coal, sand orrock and then load it into the truck or stock-yard.


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正铲Front bucket

履带式Tracked type

反铲Reverse bucket

轮胎式Wheel type

抓斗Grab

起重Lifting

周期作业式

（单斗）Periodic

机械式

Mechanical

连续作业式（多斗）Continuous

轮斗式 Bucket-wheel type

汽车式 Automobile type

步履式Step type电铲Electric

液压式Hydraulic

斗轮式 Bucket-wheel type

挖掘机Excavator


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各种类型与功能的挖掘机械，广泛应用于工业与民用建筑、

交通运输、水利电力工程、农田改造、矿山采掘以及现代化军事工程等行业的机械化施工中。

The different kind of excavator are widely applied in

mining or construction of building, transportation and

so on.

工程施工中约有60%以上的土石方量是靠挖掘机械来完成的

。近年来，挖掘机是整个工程机械行业中产、销量增长最快的

一个机种。

About sixty percent of earth-rock excavation in theworld are completed by excavator.



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1-2 History of the development of excavator

第一台手动挖掘机问世至今已有130多年的历史，期间经历

了由蒸汽驱动斗回转挖掘机到电力驱动和内燃机驱动回转挖掘机、应用机电液一体化技术的全自动液压挖掘机的逐步发展过程。

There are 130 years from the first manual excavatorinvented, its development come through driven bysteam, electricity and internal combustion,

mechatronics and hydraulics integration andintelligentization.


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由于液压技术的应用，20世纪40年代有了在拖拉机上配装液压反铲的悬挂式挖掘机。

Due to the application of hydraulic, the excavatorthat assembled hydraulic bucket was invented in1940s.

20世纪50年代初期和中期相继研制出拖式全回转液压挖掘机和履带式全液压挖掘机。

The full-hydraulic crawler type excavator wasinvented in 1950s.



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从20世纪60年代起，液压挖掘机进入推广和蓬勃发展阶段，各

国挖掘机制造厂和品种增加很快，产量猛增。The hydraulic excavator developed very fast from 1960S,the number of factory of excavator increased very fast.

20世纪70年代起，液压挖掘机广泛采用高压变量系统，向高速、高压、大功率发展，产量占挖掘机总产量的90%以上。目

前几乎100﹪ 。The hydraulic excavator developed along high speed,high pressure and high power from 1970s, the hydraulic

excavator almost is 100% of all excavator now.



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§ 4.D系列挖掘机定义及特点介绍

Definition and characteristics introduction of D series excavato




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§2. The basic structure and principle of excavato

§2-1 液压挖掘机基本结构

Basic structure of hydraulic excavator

2-1-1 回转平台 (revolving work-table)

2-1-2 行走装置 (walking system)

2-1-3 工作装置 (working system)

§2-2液压挖掘机的工作原理

Working principle of hydraulic excavator

§2-3液压挖掘机主要参数

Main parameter of hydraulic excavator


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2-1 Basic structure of hydraulic excavator

工装置

动装置液压系统回转装置驾驶室

回转平台行走装置

挖掘机

excavator

revolving work-table walking systemworking system

propulsionsystem

hydraulicsystem

revolvingsystem

operatorcabin


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2-1-1 Revolving work-table

回转平台

revolving work-table

发动机engine

主控阀main control valve 驾驶室

operator cabin

电气系统electric system

散热器radiator

回转马达revolving motor

覆盖件covering


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回转平台：安装发动机，液压泵，控制阀，油箱，

配重，驾驶室等诸多部件。Revolving work-table: engine, hydraulic pump,

control valve, oil tank, counterweight, operator

cabin etc. are install on it.

2-1-1 Revolving work-table


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2-1-1 Revolving work-table -engine

发动机：动力元件，将柴油化学能转化为机械能输出。Engine o: is a propulsion unit, change diesel oil’s chemical

energy into mechanical energy and output it.


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2-1-1 Revolving work-table -main pump

液压动力元件，将发动机的机械

能转化为液压能输出。Hydraulic power unit, change

engine’s mechanical energy

into hydraulic energy.

结构特点：双泵串联，后面还可以再串联一个先导齿轮泵。

Structure feature: 2 pumps in-line, still can connect a gear

pilot pump behind.


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机械动力传动路线：发动机飞轮→弹性联轴器→ 主泵。

Transport line of mechanical power ：engine gear→shaft joint→ main pump.

液压动力传动路线：主泵→油管→主控阀→ 执行机构。Transport line of hydraulic power ：main pump→ oil

pipe→ main control valve →executing system .

2-1-1 Revolving work-table -main pump


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2-1-1 Revolving work-table -main control valve

控制元件，将主泵输出的液压能传递给各执行机构，驱动主机动作。

Control unit, deliver hydraulic energy from main pump to

other executing system, in order to drive machine.

结构特点：内含许多阀杆和各

种插装阀、单向阀等，集成度

很高。

Structure feature: contain many valve

handles and different kinds of valves, have high density of

integration.

主控阀Main control valve ：


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控制对象：行走马达，回转马达，工作装置油缸。

Controlling parts: walking motor, revolving motor, oilcylinder of working system.

液压动力传动路线：主控阀→油管→各种执行元件。Transport line of hydraulic power: main control valve→ oil pipe → different executing units.

2-1-1 Revolving work-table -main control valve

2 1 1 Revolving work table revolving


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2-1-1 Revolving work-table - revolvingmotor & Speed reducer

回转马达及减速机Revolving motor & Speed reducer ：

执行元件，将主控阀传递过来的液压能转化为机械能输出，驱动上部机构回转。

Executing unit, change hydraulic energy from main controlvalve into mechanical energy and output it, then drive upperequipment.

结构特点：马达和减速机集成为一体。

Structure feature: motor & speed reducer integrated as one.动力传动路线：马达→减速机

→回转支承→回转平台。

Transport line of power: motor →speed reducer→ revolving supporting → revolving work-table.


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2-1-1 Revolving work-table - foot pilot valve

控制元件，将先导泵输出的液压能传递至主控阀行走阀芯，控制行走动作。

Controlling unit, transport hydraulic energy from pilot pumpto main control valve walking spool, control walking

movement.

液压动力传动路线：先导泵→脚先导阀

→主控阀行走阀芯。Transport line of hydraulic power: pilot

pump→foot pilot valve→ main control valve walking spool.

脚先导阀Foot pilot valve ：


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手先导阀Hand pilot valve ：

控制元件，将先导泵输出的液压能传递至主控阀动臂、斗杆、铲斗、回转阀芯，控制相应动作。

Controlling unit, transport hydraulic energy from pilot pump to

main control valve boom、stick、digging bucket、 revolving

spool，and control relevant movement.

2-1-1 Revolving work-table - hand pilot valve


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结构特点：十字轴，可前后动作，也可左右动作。

Structure feature: cross axle structure, realize every

direction’s movement.

液压动力传动路线：先导泵→手先导阀→主控阀相关阀芯。

Transport line of hydraulic power: pilot pump→ hand pilot

valve→

main control valve relevant spool.

2-1-1 Revolving work-table - hand pilot valve


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2-1-2 Walking system

回转支承revolving supporting

行走架

walking frame

支重轮bogie wheel引导轮

idler

驱动轮drive wheel

履带chain track

张紧装置

chain adjuster

拖链轮upper carrier wheel

2-1-2 Walking system -four wheels


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2 1 2 Walking system four wheelsand one track

carrier wheel

chain adjuster

idler drive wheel

chain link

track board


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2-1-2 Walking system - Walking frame

行走架是履带行走装置的承重骨架。

Walking frame is the main bearing structure of trackwalking system.


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2-1-2 Walking system - Walking motor


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2 1 2 Walking system Walking motor& speed reducer

执行元件，将主控阀传递过来的液压能转化为机械能输出，驱动整机行走及转向。

Executing unit, change hydraulic energy from main control

valve into mechanical energy and output it, then drivemachine and make it turn around.

结构特点：马达和减速机集成为一体。

Structure feature: motor & speed reducer integrated as one.动力传动路线：

马达→减速机→驱动链轮→履带。

Transport line of power: motor →speed reducer→ drive wheel → train track.

行走马达及减速机Walking motor & speed reducer ：


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2-1-3 Working system

动臂boom

斗杆

stick

摇杆rocker arm

动臂油缸boom cylinder

铲斗油缸bucket cylinder

连杆connecting rod

斗杆油缸stick cylinder

铲斗bucket


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工作装置是挖掘机的主要组成部分之一。可以更换的工作

装置极大地拓展了挖掘机的应用。

Working system is a Important part of the excavator.

Replaceable working equipment expand the usage of

excavator.

铲斗，抓斗，吸盘，液压锤，液压剪，液压螺旋钻等。Bucket ,grab, sucker, hydraulic

hammer, hydraulic shears,hydraulic twist drill etc.



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反铲是单斗液压挖掘机最常用的结构型式，主要用于挖

掘停机面以下土壤。Backhoe is a usual type of monobucket hydraulicexcavator, mainly used to dig soil lower than level

plane.

动臂、斗杆和铲斗等主要部件彼此铰接，在液压缸的作用下各部件绕铰接点转动，完成挖掘、提升和卸土等动作。

Bucket grab、boom and stick are hinge joint to eachother, driven by hydraulic cylinder, complete the

motion of digging、lifting and outloading.

……



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针对不同的作业对象，选取不同的铲斗。

Different object of work, different bucket.

标准铲斗standard bucket

V型铲斗

V-type bucket平整斗

岩石斗

rock bucket



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铲斗的容量要机器相匹配Bucket’s capacity must match in machine

如果选取的铲斗比推荐的容量大得多，挖掘机的瞬时转动惯量将会变得很大。对整个机器的寿命和稳定性都有不利影响；对液压部件、大臂、小臂和机架同样也有不利

影响。

If bucket is bigger than which is commended,

instantaneous rotational inertia of excavator would bemuch bigger, it would have a bad influence to hydraulic

parts、working arms and also machine structure, then

cut down life time and stability of excavator.



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大小臂的选取与铲斗容量Choose of working armsand bucket’s capacity

相对较短的大小臂具有较大的挖掘力，宜配较大容量的铲斗，但是同时以降低挖掘范围为代价。

Shorter arms, bigger digging force, suitable for bigger capacity

of bucket, but smaller dig area.

较长的大小臂，尤其是超长臂挖掘机，具有较小的

挖掘力，宜配较小容量的铲斗，优点是扩大挖掘范

围。

Longer arms, especially over-long arms, have a smaller

digging force, suitable for smaller capacity of bucket, itsadvantage is widen dig area.



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选择合适的铲斗具有下列优点：Advantage of choosing a suitable bucket:

降低工作装置的故障率 (reduce breakdown rate)；

降低工作循环时间(reduce time of work cycle) ；

降低燃油消耗(reduce cost of fuel oil) ；

提高单位挖掘力(promote per digging force) ；

提高生产率(promote productivity) ；提高机器的耐用性(increase service durability of

machine) ；

提高机器的稳定性(increase stability of machine) 。


2 3


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液压破碎锤：主要用来打桩、开挖

冻土和岩层、破坏路面表层、捣实土壤等工作。

Hydraulic hammer: mainly used

for piling, excavating frozen soil

and rock, or destroying the road

surface, tamping the soil and so

on.


2 1 3 W ki t


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液压剪：剪断水泥建筑的钢筋等

Hydraulic shear : mainly used

for cutting the building’sreinforcing steel .


2 1 3 W ki t


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液压螺旋钻：用于钻孔，取土等作业。

Hydraulic auger: it isused for drilling，collecting earth and

so on .


2-2 Working principle of hydraulic


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excavator

利用杠杆原理，液压缸推动动臂、斗杆和铲斗产生各构件之间的相对旋转运动，从而实现人为控制的挖掘和卸料动作。

Using the principle of level , the Hydraulic Cylinderpush the excavator ’s boom、arm and bucket andlet them rotary so that we can control the

movement of excavating and discharging.

上部回转平台绕垂直轴旋转。

The work platform rotate about an approximately

vertical axis.



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回转与行走装置是液压挖掘机的机体，转台上部设有动力装

置和传动系统，发动机是液压挖掘机的动力源，大多采用柴油发动机。

Work platform and moving device are the hydraulicexcavate ’s body, there are power and transmissionsystem on the platform , engine is the origin of

power , most of excavate use diesel engine.

excavator



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液压传动系统通过液压泵将发动机的动力传递给液压马

达，液压缸等执行元件，推动工作装置动作，从而完成各种作业。

Hydraulic transmission system transmit powerto hydraulic motor , hydraulic cylinder throughhydraulic pump , and push work device to work

so that it can complete many kinds operation.

excavator



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excavator

Engine

Drive

Pilot

pump

Control oi lPilot valve

Control

Driver Control oi l

Work oilWork oilDrive

Work

pump

Main valve

Work oil

Motor

Carry out

Carry out

Drive Control oil Control

Engine Pilot pump Pilot valve Driver

Control oil

Drive Work oil Work oil

Work pump Main valve Motor

Work oil Carry out

Carry out

Implement work Cylinder Swing Travel

2-3 Main parameter of hydraulic excavator


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2 3 Main parameter of hydraulic excavator

1.斗容 Bucket capacity

2.发动机功率 Engine power

3.操作重量 Operating weight

4.挖掘力 Digging force

5.工作范围 Operating range

6.运输尺寸 Transportation size

7.回转速度

Swiveling speed8.行走速度与牵引力 Travel speed and traction

9.接地比压 Grounding pressure

2 3 1 Bucket Capacity


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2-3-1 Bucket Capacity

斗容是挖掘机三个主参数（操作重量，发动机功率，斗容）之一。

Bucket Capacity is one of basic parameter

斗容一般分为堆装和平装两种，挖掘机常用标定斗容为堆装。

Bucket capacity are generally divided into two kinds:

stowage and paperback, and stowage is usually used

for calibrating the bucket capacity.

1：1堆装 1：2堆装

2 3 2 Engine power


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2-3-2 Engine power

总功率(gross power )：

指在没有消耗功率附件，如消音器、风扇、交流发电机及空

气滤清器的情况下，在发动机飞轮上测得的输出功率。Output power be measured on the engine flywheel when

no power consumption attachments, such as mufflers, fan,

alternator and air filter case.净功率(net power )：

指在装有消耗功率附件，如消音器、风扇、交流发电机及空

气滤清器的情况下，在发动机飞轮上测得的输出功率。Output power be measured on the engine flywheel when

have power consumption attachments, such as mufflers,

fan, alternator and air filter case.

2-3-3 Operating weight


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2-3-3 Operating weight

操作重量决定了挖掘机的级别，决定了挖掘机挖掘力的上限。Operating weight determines the level of the excavator ,and theupper limit of excavators.

如果挖掘力超过这个极限，在反铲的情况下，挖掘机将打滑，并被向前拉动，这非常危险。在正铲情况下，挖掘机将向后打滑。If the digging force beyond the limit, in the backhoe case,excavator will slip, and be pulling forward, which is very dangerous.In the shovel case, excavator will be slipping backwards.

2-3-4 Digging force


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2-3-4 Digging force

包括斗杆挖掘力和铲斗挖掘力。

Including Arm digging force and bucket digging force.

两个挖掘力的动力不同，斗杆挖掘力来自斗杆油缸，铲斗挖

掘力来自铲斗油缸。Different digging force have different power : arm digging

from arm cylinder ,bucket dingging from bucket cylinder.

A r m c y l i

n d e rB u c k e t c y l i n d e r

2-3-5 Operating range


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2-3-5 Operating range

A 最大挖掘半径

Max reach

B 最大地面挖掘半径

Max reach at ground level

C 最大挖掘深度

Max dig depth

D 最大挖掘深度（8′水平）

Max dig depth of 8'bottom

E 最大垂直挖掘深度

Max dig depth of vertical

F 最大挖掘高度

Max dig height

G 最大卸载高度

Max dump heightH 最小回转半径

Min swin radius

2-3-6 Transportation size


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2 3 6 Transportation size

A machine cab width E height of engine cover I track gauge

B transport width F counterweight clearance J shoe width

C cab height G track on ground K ground clearance

D tailswing radius H undercarriage length L transport length

M Boom height

2-3-7 Swiveling speed


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回转速度：挖掘机空载时，稳定回转所能达到的平均最大速

度。Swing speed: when excavators no-load, the stability of

the average maximum rotation speed can be achieved.

2 3 7 Swiveling speed

2-3-8 Travel speed and traction


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2 3 8 Travel speed and traction

行走速度：挖掘机空载时，稳定行走所能达到的平均最大速度。

Travel speed: when excavators no-load, the stability of theaverage maximum speed can be achieved.

牵引力是指挖掘机行走时所产生的力。Traction refers to the power when excavator travelling .

行走速度与牵引力表明了挖掘机行走的机动灵活性及其行走能力。

Walking speed and traction demonstrated the flexibility and mobility

walking excavator walking ability.

2-3-9 Grounding pressure


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2 3 9 Grounding pressure

接地比压的大小决定了挖掘机适合工作的地面条件。

The size of ground pressure determines the ground conditions for

excavator's operating.

接地压力指机器重量对地面产生的压力。

Ground pressure is the pressure of machine weight exerted on theground.

理论值。因为履带不能完全与地面接触；由于整机重心的偏移，履带上的压力不均匀。

Theoretical value. Because the crawler can not contact with theground completely and the whole center of gravity shifts, which

makes the pressure on the track is uneven.

接地比压=工作重量/全部与地面接触的面积



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§ 4.D系列挖掘机定义及特点介绍Definition and characteristics introduction of D series excavato


Table of contents


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Table of contents

§ 4. Definition and characteristics introductionof D series excavator


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§ 4-1 D系列挖掘机定义Definition introduction of D series excavator

§ 4-2 D系列挖掘机主要特点介绍

Main characteristics introduction of D series excavator

of D series excavator

4-1 Definition of D series


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集柳工多年研发制造经验，针对用户实际需求而精心设计制造的新一代机型；

A new generation of type well designed and manufactured in connectionwith users’ actual demands, which is integrated with many years of

experience of LiuGong in research, development and manufacture;

在研究国际先进挖掘机特点、优点基础上研发的高品质机型；High-quality type developed on the basis of studying characteristics andadvantages of international leading excavators;

采用国家863项目的最新成果，完全具有柳工自主知识产权的产品；Product that adopts the latest achievements of National 863 Program andhas LiuGong independent intellectual property rights;

4-1 Definition of D series


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柳工智能型挖掘机，全面替换C系列，升级换代型机型；

LiuGong intelligent excavator of updated and upgraded type, which can besubstituted for C series completely;

采用柳工新一代自主知识产权的微电脑全功率控制系统（CAPC)，实现

机、电、液一体化； A new generation of LiuGong micro-computer full-power control system

(CAPC) with independent intellectual property rights is adopted to realize

electromechanical-hydraulic intergration;

效率更高、油耗更低。Higher efficiency, lower oil consumption.

4-2 Main characteristics of LiuGong excavator


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可靠

靠

ReliableReliable

高效

效

EfficientEfficient

值得信赖得信赖

TrustworthyTrustworthyExpert in earthwork

4-2 High-quality overall configuration


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Track pad

Chain link Track roller

and carrier

roller

Tensioner

Idler

4-2 Power configuration--Cummins


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专门为挖掘机开发的发动机

Engines specially developed for excavators.

使用Zexel直列泵。对油品的适应性更强

Adopting Zexel in-line pump. Adaptabilityto oil is much stronger.

完全满足欧Ⅱ、Ⅲ阶段排放

It can completely meet EU stage Ⅱ and

Ⅲ emission standard.

扭矩储备充足

Sufficient torque reserve.

正常使用保养情况下，大修周期可达10000

小时以上

Under normal operation and maintenance

conditions, complete overhaul period can

reach over 10000 hours.

康明斯与柳工---长期战略合作伙伴关系Cummins and LiuGong ---Long term strategic partnership

4-2 Power configuration--Cummins


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相比同类型的柴油机零部

件少40%，故障出现率大为

降低

Compared with the diesel

engine of the same type,

parts are reduced by 40%

and fault rate is also greatly

reduced.

性能成熟可靠的发动机系统

Engine system with mature and reliable performance

4-2 Full-power control system


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CAPC system

A new generation of

LiuGong full-powercontrol system with

intellectual property

rights;

Electromechanical-

hydraulic intergration;

High efficiency, oil

saving, well

operability!

Monitor a series of parameters like engine rotation speed. With the increase of external load, pump power is

increased and engine load is also increased. When increased of the external load leads to decreased of engine

rotation speed, electrical control system will automatically adjust the pump current in order to automatically reduce thepump pressure at start of adjustment and to reduce pump power; otherwise it will increase the pump power in order

to realize reasonable matching of hydraulic power and engine power and in order to realize high efficiency, oil saving

and better operability.

Automatic idle speed switch Manual idle speed switch

Standard standby change-over switch

Standby switch

Hydraulic oil temperature sensor

Fuel amount sensor

Hand pilot pressure switch type sensor

Foot pilot pressure switch type sensor

4-2 Full-power control system


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CAPC 全功率电控功能特点Functional characteristics of CAPC full-power electrical control system

4-2 Engine rotation speed control—multipleoptions


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Setting on accelerator control mode:

Power zone: 10-gear, 9-gear

Full-power follow-up mode is adopted. CAPCsystem can dynamically control matching of

hydraulic system power and diesel engineoutput power according to working load andgive full play to the power of diesel engine.

Economical zone: 8-gear, 7-gear, 6-gear, 5-gear

Engine rotation speed can be reduced gradually

and it can suitable for work of various workingstrength.

6-gear: Applicable to operation of hydraulichammer

Precision zone: 4-gear, 3-gear

Applicable to light load and precision work

p

When faults occur on the controller, select emergency

mode through standard/emergency change-over switch 1.

Also, standby accelerator can adjust the engine rotation

speed to realize normal operation during repair period ofthe controller.

Applicable for differentmaterials

Rotation speed of 10

gears

CAPC computer control system6-10 gears full-power follow-up modes are applicable to engine powers

under different operation conditions. Among other things, 6-gear is

applicable to operation of the hydraulic breaking hammer.

2-5 gears can be used to select reasonable power matching. They are

applicable to precision operation.

4-2 LCD Monitor


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I t i s v

i s u a l a

n d

c a n a l s

o g i v e

s

a n a l a

r m !

• Display and detection of machine operation states. During operation of the machine, it can display through

query the machine operation states including operation pressure, amount of fuel, engine oil pressure, water

temperature and oil temperature. When abnormities occurs, the monitor will give an alarm.

• Understand the machineoperation states through

the monitor. When

abnormity occurs during

machine operation, the

system will give an alarm

through the monitor.

• Machine operation states can be easily

detected through query and selection among

various machine operation states.

• Understand maintenance items needed to be done at

each maintenance period through inquiring the

maintenance interval.

Monitor with simple operation and easy identification of machine operation states

Machine operation states are clear at a glance

Simple and easy switch query amongvarious machine operation states

Maintenance information display

function

4-2 Hydraulic system --Reliability and durability


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1、液压系统密封法由普通和平面O形圈密封改为24°锥密封（带O型圈）--改善振动时的密封性能

Seal method of hydraulic system is changed

from common plane O-ring seal into 24°cone

seal (with O-ring). --Improving the sealperformance at vibration

液压系统可靠性和耐久性提高：选用抗振性更好的密封形式Improved hydraulic system reliability and durability: Adopting the seal type with well vibration

resistance

(老形式)平面密封

(Old type) Plane seal

(新形式) 24°锥密封（带O型圈）

(New type) 24°cone seal (with O-ring)

2、工作油路采用法兰密封形式Working oil line adopts flange seal

4-2 Hydraulic system --Reliability and durability


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液压系

统布局

图

液压系统可靠性和耐久性提高：油管的走向、固定进行系统布局；有效避免因振动引起油管渗漏及磨损发生。Improved hydraulic system reliability and durability: System layout is made

through oil pipe routing and fixation; it can effectively avoid oil pipe leakage

and wear caused by vibration.

4-2 Electrical system --Reliability and durability


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电器系统可靠性和耐久性提高：将主要电器元件集中布置在驾驶室内，在方便维护的同时，改善了元件的工作环境从而提高可靠性。Improved electrical system reliability and durability: Main electrical elements

shall be centralized in the cab. In this way, it is convenient for maintenanceand it also improves the working environment of these elements to improve

the reliability. 继电器Relay

D

D series

执行器控制器 Actuator

controller

主控制器

Main controller

4-2 Electrical system --Reliability and durability


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线路的走向、固定进行系统布

局、避免因振动引起的松脱及磨损发生。System layout is made

through line routing and

fixation. It shall avoid

looseness and wear causedby vibration.

改善了接地连接:

改变集中接地方式，采用多点接地方式，以改善接地连接的可靠性Improved ground connection:

Centralized grounding mode is

changed into multiple-point

grounding mode in order toimprove reliability of ground

connection.

电器系统可靠性和耐久性提高：线路的走向、固定Improved system reliability and durability: Routing and fixation of lines

4-2 Comfortable operating environment


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驾驶室宽度1008mm，业界最宽敞驾驶室之一

The cab is 1008mm wide, which is one of the most spacious cabs in this field.

驾驶室内的工作空间符合ISO工作空间标准。

Working space in the cab meets the ISO working space standard.

安装在扶手箱灵巧的先导锁手柄，可以前后移动，上下车更方便。Smart pilot locking handle installed on the armrest box can be moved backward and

forward, which is convenient for getting on/off the vehicle.

宽敞的驾驶室Spacious cab



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5000kcal（SAE）的大风量空调器，合理布置的成形风道，可供选择的送风模式，有

内循环与外循环（新鲜空气送入模式）两种模式可供选择。

5000kcal(SAE) air conditioner with large air

volume; reasonably arranged air duct; air

supply modes for selection: Internal circulation

and external circulation (Mode for fresh airsupply).

使操作者一年四季均可享受舒适的环境。

Operators can enjoy the comfortable

environment all the year round.

脚部吹风口 Air supply port

for feet

空调风道采用新型空调风道，同时增大风道直径，在减小风阻的同时达到更快速更均匀的制冷效果. Air conditioning air duct

New air conditioning air duct is adopted. Also,

air duct diameter is increased. Thus, it can

not only reduce the windage, but also canreach fast and even refrigeration effect.

后风道Rear air duct

后风道Rear air duct

自动冷暖空调 Automatic air conditioning

空调操作界面简明、操作简单Simple air conditioning operation

interface, easy operation



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在工作之余、操作手享受自已钟爱

的美妙音乐，心情舒畅。When there is no work to be done,

operators can enjoy their favorite

music, which can bring good

mood.

适应不同的光线环境，可以更方便监视整机信息

It is applicable to

environments with different

light conditions, which is

convenient for monitoring theoverall machine.

利用空调的送风，冷藏或保暖饮

料。Refrigerate or warm the beverage

b usin air su l from the air

带MP3的收音机Radio with MP3

大屏幕彩色液晶显示器Large color LCD

冷暧风冷却、加暧蓄物箱Cold and warm storage boxes

with cold and warm air



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新的司机椅扶手与长手柄完美结合

操作力更小，操作手长时间操作机器亦不觉得累。New armrest of the driver’s seat can be well used with the longhandle

Operating force become smaller and the operator can not feel

tired for a long time period of operation.

脚踏的空间更符合人机工程学，长时间操作机器腿部亦不累。

Pedal space conforms to ergonomics. The operator can not feeltired for a long time period of operation.

灵巧的手先导操纵手柄Smart pilot operating handle

更人性化的脚踏More humanized pedal

4-2 Perfect working environment


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舒适的操作环境Comfortable operation

environment

前窗除霜口Defrosting port of

front window

冷、暖储物箱Cool and warm

storage boxes

长手柄的先导操作杆、新工艺的

先导切断阀手柄Pilot operating

lever with long

handle, shutoff

valve handle

made with newprocess

新工艺的雨刮器Rain wiper made

with new process

音响设备与逃生锤Sound equipment and

emer enc hammer


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4-2 Simple and convenient maintenance


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发动机机油放油口

Engine oil drain port

回转马达齿轮油排放口Rotary motor gear oil drain port



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§ 5. The introduction of D series medium-sizeexcavator product.


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§ 5-1柳工挖掘机代号LiuGong excavator code

§ 5-2 922D与922LC（Ⅰ）的参数对比Parameters comparison between 922D and 922LC（Ⅰ）

§ 5-3 925D与925LC（Ⅰ）的参数对比Parameters comparison between 925D and 925LC（Ⅰ）

§ 5-4 整机外观变化Overall appearance

§ 5-1 LiuGong excavator code


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Liugong standard:

柳工标准

CLG922D

C China中国

LG LiuGong

柳工

9 Excavator

挖掘机

22

Operating

weight

操作重量

D D series

D 系列

5-2 Parameters comparison between 922D and922LC（Ⅰ）


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产品型号 Product model 922D( ) 922D(Ⅲ) 922LC（）

操作重量（kg）Operating weight (kg) 22000 22000

1.0

116/2000

2×215

31.8

62967

11.5

145/159

95/103

6770

6615

9850

9540

9705

21900

标准斗容（m³） Standard bucket capacity (m³) 1.0 0.95

额定功率（kw）Rated power (kw) 112/1950 108/2100

液压系统流量（l/min）Hydraulic system flow (l/min) 2×210 2×200

工作装置主压力（Mpa）Main pressure of workingdevice (Mpa)

31.8 31.4

回转扭矩（ Nm) Swing torque (Nm) 62967 62554

最大卸载高度（mm）Max. dumping height (mm) 6770 6750

回转速度（r/min）Swing speed (r/min) 12 10.2

铲斗挖掘力（kn）Bucket breakout force (kN) ISO 145/159 128/140

斗杆挖掘力（kn）Arm breakout force (kN) ISO 95/103 91/99

最大挖掘深度（mm）Max. digging depth (mm) 6615 6635

最大挖掘半径（mm）Max. reach (mm) 9850 9850

最大挖掘高度（mm）Max. digging height (mm) 9540 9520最大地面挖掘半径（mm）Max. reach at ground levelmm

9705 9705

5-2 Parameters comparison between 925D and925LC(Ⅰ)


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产品型号 Product model 925D( ) 925D(Ⅲ) 925LC（I）

操作重量（kg）Operating weight (kg) 25500 25500

1.2

142/2200

2×230

32.2

7004510.5

149/160

105/114

6840

7015

10390

9720

10230

25500

标准斗容（m³） Standard bucket capacity (m³) 1.2 1.1

额定功率（kw）Rated power (kw) 133/2000 125/2100

液压系统流量（l/min）Hydraulic system flow (l/min) 2×230 2×210

工作装置主压力（Mpa）Main pressure of workingdevice (Mpa)

32.2 31.4

回转扭矩（ Nm) Swing torque (Nm) 70045 68700回转速度（r/min）Swing speed (r/min) 11.5 10.6

铲斗挖掘力（kn）Bucket breakout force (kN) ISO 149/160 149/160

斗杆挖掘力（kn）Arm breakout force (kN) ISO 105/114 105/114

最大卸载高度（mm）Max. dumping height (mm) 6840 6680

最大挖掘深度（mm）Max. digging depth (mm) 7015 7000

最大挖掘半径（mm）Max. reach (mm) 10390 10260

最大挖掘高度（mm）Max. digging height (mm) 9720 9750最大地面挖掘半径（mm）Max. reach at ground level(mm)

10230 10020

5-4 922D overall appearance


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922D922LC（I）



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922LC（I） 922D



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925LC（I） 925D



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925LC（I） 925D

Shaping the future together


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Thanks!

谢谢

02总体介绍the collectivity introduction.pdf

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