WCM CTX8010 Anwendungshandbuch
1
CTX8010 MINI EXCAVATOR
OPERATION & PARTS MANUAL
2
Preface
Chapter I Usage Features and Performance Parameters of CTX8010 Excavator
Section I Usage and features
Section II Main performance parameters
Chapter II Basic Structures and Work principle of CTX8010 Excavator
Section I Overview
Section II Work principle
Section III Basic structure of mechanical system
Section IV Basic structure of hydraulic system
Chapter III Service Technologies of CTX8010 Excavator
Section I Basic construction knowledge
Section II Preparation for work
Section III Operational essentials
Section IV Operational precautions
Chapter VI Maintenance of CTX8010 Excavator
Section I Daily inspection
Section II Periods of overhaul, medium and minor repair
Chapter VII Troubleshooting of CTX8010 Excavator
Section I General
Section II Troubleshooting of mechanical system
Section III Troubleshooting of hydraulic system
Section IV Troubleshooting of electrical control system
Section V Troubleshooting of engine
Section VI Other
3
Chapter I Usage Features and Performance Parameters of CTX8010
Excavator
Section I Usage and features
CTX8010 Excavator are provided with excavating, crushing, ditch cleaning, drilling and bulldozing, with their
attachments quick hitched and thus its utilization up greatly. In addition, they are easy to operate and transport and
flexible to work at narrow site.
CTX8010 Excavator, hydraulic type with single bucket
This type of excavators are mainly applied to: farming, landscaping, ditching and fertilization in garden, vegetable
greenhouse, agricultural transformation, indoor demolition, small earthwork, civil engineering, road recovery,
basement and indoor construction, concrete breaking, burying of cable, laying of water supply line, garden
cultivation, desilting and others.
The excavator are equipped with Changchai diesel engines, domestic main pumps and rotary motors, traveling
motor, featuring comprehensive guarantee, durability and flexibility.
Excavators are able to equipped with multiple work equipments, such as quick hitch, log grab, ripper, leveling
bucket, auger and narrow bucket, as well as optional roof, radiator and others, so as to meet your needing.
4
Quick hitch Narrow bucket
Log grab Mechanical thumb
Auger Ripper Rake
5
Section II Main performance parameters
6
Overall dimensions
Unit: mm
A Wheel track
962
B Overall length of track
1282
C Ground clearance of platform
377.5
D Ground clearance of platform tail
843.5
E Chassis width
960
F Crawler width
161.12
H Crawler height
330.53
I Transportation length
2796.48
J Overall height
1155
Work range
Unit: mm
A Max. digging radius on ground
3017.16
B Max. digging depth
1745.55
C Max. digging height
2842
D Max. unloading height
1919.82
E Max. vertical digging depth
1371.51
F Min. swing radius
1292.67
G Max. lifting height of dozer blade
347
H Max. digging depth of dozer blade
255
Performance parameters
Weight of complete machine kg
1000
Standard bucket capacity m³
0.025
Rated power kw
7.5
7
Chapter II Basic Structures and Work Principle of CTX8010 Excavator
Section I Overview on CTX8010 Excavator
CTX8010 Excavator is composed of power train, work equipment, swing mechanism, control mechanism, drive
system, traveling mechanism and auxiliary equipment, as shown in fig. 1-1. Mounted on the rotary table are the
regular full-swing type hydraulic excavators, main components of drive system, swing mechanism and auxiliary
devices, which are referred to as upper rotary. Therefore, a CTX8010 Excavator is divided into work equipment,
upper rotary and traveling mechanism.
8
Section II Work principle of excavators
Diesel engine changes the chemical energy of diesel into mechanical energy that is then altered with hydraulic
gear pump to hydraulic energy that is distributed to each actuating element (such as hydraulic cylinder, swing
motor and traveling motor). After that, each actuating element transform the hydraulic energy back to mechanical
energy, driving the work equipment and running the complete
machine.
Movement and power transmission route of excavator shown below:
1.
Traveling power route: diesel engine —— coupler —— hydraulic pump (mechanical energy changed to
hydraulic energy) —— distributor valve —— central swing joint —— traveling motor (hydraulic energy
changed to mechanical energy)—— sprocket —— rubber crawler—— starting of traveling
2.
Expandable track route: diesel engine —— coupler —— hydraulic pump (mechanical energy changed to
hydraulic energy) —— distributor valve —— electromagnetic valve —— central swing joint ——
telescopic oil cylinder (hydraulic energy changed mechanical energy) —— Chassis expands outwards
3.
Swing power route: diesel engine —— coupler —— hydraulic pump (mechanical energy changed to
hydraulic energy) —— distributor valve—— swing motor (hydraulic energy changed to mechanical
energy) —— slewing bearing —— realizing of wing
4.
Boom power route: diesel engine —— coupler —— hydraulic pump (mechanical energy changed to
hydraulic energy) —— distributor valve —— boom cylinder (hydraulic energy changed to mechanical
energy)——boom movement
5.
Swing arm route: diesel engine —— coupler —— hydraulic pump (mechanical energy changed to
9
hydraulic) —— distributor valve —— electromagnetic valve —— swing arm cylinder —— The swing arm
being to move
6.
Arm power route: diesel engine —— coupler —— hydraulic pump (mechanical energy changed to hydraulic
energy) —— distributor valve —— arm cylinder (hydraulic energy changed to mechanical energy) —— arm
movement
7.
Bucket power route: diesel engine ——coupler —— hydraulic pump (mechanical energy changed to
hydraulic energy) —— distributor valve —— bucket cylinder (hydraulic energy changed to mechanical
energy) —— bucket movement
10
Section III Basic structure of CTX8010 Excavator mechanical system
1
Power system
CTX8010 Excavator is equipped with single-cylinder air-cooling diesel engine.
2
Drive system
CTX8010 Excavator's drive system could transfer the output power from diesel engine through the hydraulic
system to work equipment, swing mechanism and traveling mechanism.
3
Swing mechanism
Swing mechanism could turn the work equipment and upper rotary leftwards and rightwards, so as to do the
excavating and the unloading. CTX8010 Excavator’s swing mechanism has to fix the rotary table onto frame and
has it swing flexibly, without any inclining risk. Therefore, CTX8010 Excavator is equipped with a slewing
support (supports) and a slewing drive (power of turntable slewing), which are called by a joint name as swing
mechanism.
3.1
Slewing support
CTX8010 Excavator has its rotary table supported with a rolling bearing, realizing the swinging of upper
rotary.
3.2
Rotary drive
CTX8010 Excavator adopts the direct drive type. Namely, the output shaft of low-speed high-torque hydraulic
motor is mounted with a driving pinion which meshes with the slewing gear ring. .
4
Traveling mechanism
Traveling mechanism supports the complete weight of excavator and drives it to run.
CTX8010 Excavator has the crawler traveling mechanism similar to other crawlers, with one hydraulic motor
driving one track. This excavator adopts low-speed high-torque motor. When two hydraulic motors run in the
same direction, this machine goes straightly forward; when one motor is supplied with oil and the other is braked,
excavator steers around the braked track; when two motors runs reversely, excavator rotates in situ.
Each part of traveling mechanism is mounted on integral traveling frame. The pressure oil from hydraulic pump
goes through the multi-way directional valve and the central swing joint into the hydraulic traveling motor that
changes the pressure energy into output torque that then goes to sprocket, driving excavator to run.
CTX8010 Excavator’s sprockets are of integral castings and able to correctly engage with track, featuring balance
drive. Sprockets located at rear part of excavator, shortening the tensioner part and relieving the track abrasion,
wear and power consumption. Each track is equipped with a tensioner, adjusting the track tension and reducing the
track vibration noise, abrasion, wear and power loss.
5
Work equipment
The hydraulic excavator could have multiple work equipment, up to dozens of varieties, with backhoe and ripper
most popular.
CTX8010 Excavator has the boom, arm and bucket articulated with each other, as shown in figure and swing
around their articulated points respectively with aid of the hydraulic cylinder, finishing the excavating, lifting and
unloading.
5.1
Boom
As the main component of backhoe work equipment, the integrated skewed boom is adopted on CTX8010
Excavator.
Being of the most popular type at present, skewed boom could allow excavator to dip deeper and to lower the
unloading depth, satisfying the backhoe requirements.
Inhaltsverzeichnis
