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Dynamic Compaction Machine

Dynamic Compaction Machine

Dynamic compaction is a method that is used to increase the density of the soil of the field. It is a method with the purpose of increasing the density of soil deposits. The process of the dynamic compaction includes dropping a heavy weight repeatedly on the ground at regularly spaced intervals. The weight and the height determine the amount of compaction that would occur. The weight that is used depends on the degree of compaction desired and is between 8 T to 36 T. The height varies from 1m to 30m for special applications.

YTQH400A Dynamic Compaction Machine
1. Wide application range.
The tamping capacity can reach up to 400 t.m if there is no attachments used. And tamping capacity is up to 800t.m. Those allow the machine meeting the requirement of most strong tamping construction.
2. Excellent performance of power unit:
Our dynamic compaction machine YTQH400 is equipped with 179 kW Cummins diesel engine with "GB Ⅱ" emission, which has strong power as well as reliable, economical and environmental performance; the 140 kW variable main pump with high transmission efficiency.
3. High strength, high reliability and good stability of chassis.
The retractable chassis mechanism hoisted by the 70 t grade creeper has an extendable folding bracket. When working, the creeper length will be 6,055 mm, and the width can reach up to 4,830 mm, medium diameter of slewing bearing adopted is 1,806 mm, and with a high strength and excellent overall stability; the built-in planet gear reducer and large torque running motor has a large driving force, strong grade ability and high reliability regardless of external influence. The ground clearance of chassis is larger than 360 mm, and grounding pressure is only 0.067 MPa to facilitate a strong passing capacity.
4. High strength of boom:
The boom formed by welding of high strength structural pipe has a main chord pipe specification of φ76X9, and has good rigidness, light weight and strong carrying capacity. The upper section of boom has a projected "Goose head" structure which is more applicable for strong tamping construction; the ratchet can lock the derricking winch mechanism to further ensure a safe and reliable positioning of boom.
5. Large pulling force of single rope of lifting winch:
For the lifting winch with free hook falling function and M7 working level, the maximum pulling force of single rope can reach up to 10–13 t, and maximum rope speed can reach up to 110m/min. The built-in normally closed brake can ensure a reliable braking of tamper.
6. Convenient and agile operation dynamic compaction machine:
The hydraulic control system adopts armrest box type pilot handle control and load sensor with micro-motion function which is convenient and agile; the swing mechanism has controllable free slipping mechanism to facilitate a stable operation without impact.
7. Working with long time and large power:
The hydraulic system is equipped with an independent cooling system to ensure the engine and hydraulic system can work for a long time with large power not resulting in over-temperature. The useful volume for the enlarged fuel tank can get up to 500 L to efficiently guarantee a day's working.
8. Dynamic compaction machine of High safety:
It is provided with electronic combination instrument, integrated control device of engine data, and automatic warning device; it is also equipped with safety devices such as rotary table swing locking device, boom anti-overturn device, winch over-rolling protection device, lifting ultimate micro-motion device etc to make sure safe and reliable working.
9. Comfortable operation:
The shock absorbing connected cab has a wide range of view and beautiful appearance, and is equipped with a guard screen. The human-oriented design inside the cab such as shock absorbing seat, fan, heater and optional MP3 audio player can provide a comfortable operation and good working environment.
10. Convenient transportation:
The external dimension for the main machine is 7,240 X 3,300 X 3,400 mm. When transporting, only the boom and balancing weight is necessary to be removed instead of disassembly of the whole dynamic compaction machine, and the maximum weight for a single piece is 36.5 t to facilitate a low transportation cost. The supported type balancing weight with the maximum single piece weight of 6.2 t is more convenient for the installation, disassemble and transfer.


Tamping energy level 400
Allowable hammer weight 20
Chassis track 5200
Chassis width 3300(4830)
Creeper tread width 800
Boom length of this Dynamic Compaction Machine 19-25
Working angle 60-77
Maximum lifting height 25.8
Working radius 6.5-14.6
Lifting pulling force 10 to 13
Lifting speed 0-110
Swing speed 0-2.5
Travel speed of the Dynamic Compaction Machine 0-1.3
Grade ability 40
Engine power 179
Rated speed of engine 2000
Overall weight 63.4
Weight of balancing weight 20
Main machine weight 36.4
Main machine dimension (L x W x H) 7240X3300X3400
Grounding pressure 0.067
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