SERIE OTR820D OTR HYDRAULIC PILING RIG MACHINE

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Product Description:

OTR820D:
①. Base: CAT 329D(HHP)
②. Max pile diameter (mm): 1800
③. Max pile depth (m): 60
④. Engine: CAT C7 ACERT 187KW
⑤. Maximum nominal torque (kNm): 200
⑥. Undercarriage with expandable (mm): 3000-4300
……More info  


1. Adopts the complete OEM Caterpillar retractable-crawler dedicated chasis,Its telescopic scope between the two crawler ends extends from 3000mm(at transportation) to 4400mm(at work). Undercarriage with expandable and removable tracks by means of hydraulic cylinders, guarantee exception stabbility in any type of ground. It has considerable traction force which allows easy movement even in the most difficult job sites.
2.Takes international top CAT Diesel engine with electric injection, turbocharged and air inter-cooling system. It is high reliability, fuel economy and power reserves. Emissions meet standard EPAC-Ⅲ.
3.The winches are positioned in the lower part of the mast, in front of the cabin, so that the operator can constantly check the proper operation. Thanks to the fact that the cable moves parallely to the mast, flection is not created on the upper part of the mast and operating life of the cable is therefore much longer. Tail positioned winch is available for heavy-duty type.
4.New design parallelogram system, computer optimized design and simplified pin connection system featured with nice appearance, great driving force and good stability, especially shaped to fit crowd system, allowing working radius adjustment always maintaining the mast in vertical position. The parallelogram system is easily for convenient transform between transportation and working conditions.
5.Self-erecting mast, high level anti-shock technology and high-strenth material steel attribute to that max torque can be applied all over the mast length. Multipurpose design for cylinder crowed system. Sensor and control center realize real-time measurement of the inclination angle, auto adjustment of mast verticality and inching adjustment.
6.Crowd system by means of long stroke hydraulic cylinder or crowd winch separately, are option for your exact request.
7.Rotary head with variable displacement motors and one high spin off speed. And rotary is extremely reliable, it has been disgned in order to gurantee a very compact, efficient and powerful rotary. The transmission group of rotary is made up of a hydraulic motor and new power shift purposely studied and designed to obtain maximum perfomance. During the drilling phase, the rotary has the entire power of the diesel at its complete disposal. Adapter of rotary is essential to absorb the considerable shock connected to the high speed of the main winch.
8.Telescopic kelly bar with guide made by high quality specially for high boring strength and torque force. Available with friction or inter-locking type.
9. All the main hydraulic components(pumps, valve, motor, connector) are from well-known international brands such as Bosch-Rexroth, brevini, which ensure the stability, reliability, high-efficiency and energy-saving of the entire system
10.Electronic controlling system is an innovative system, developed by Osaint, which controls and monitors the operation of the machines. For ease of operation, the system is controlled by a touch screen located in the cab. The system function is to enable the machines to perform different functions more efficiently. A dedicated power module electronic control and CAN-Bus system ensures the main pumps and Disel engine to work at their most effective and productive stages.


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Q:What material steel pipe do the drill pipe use?
A rod that is connected and used to transmit power in a drilling tool. The common components of drill string are drill bit, drill collar, drill pipe, stabilizer, special joint and kelly. The basic functions of drill string are: (1) lifting bit; (2) applying drilling pressure; (3) transmitting power; (4) conveying drilling fluid; (5) carrying out special operations: squeezing cement, dealing with underground accidents, etc..
Q:Attention problems of rotary drilling rig
Lubrication of Slewing Support racewayThe slewing support roller shall be filled with grease once every 100 hours. Under special working conditions, such as tropical, humidity, dust, temperature difference and continuous operation, the lubrication cycle should be shortened. A new grease must be added before and after the machine stops running for a long time. Grease the grease before injecting grease. Each lubrication must be filled with grease in the raceway until it oozes from the seal. When grease is injected, turn the slewing ring slowly.
Q:How can the drilling rod of rotary drilling rig be telescopic?
The power head only drives the first section of the drill pipe, and the following drill rod is driven by the driving sleeve at the bottom of each drill rod.
Q:What is the market prospect of rotary drilling rig?
Market awareness increased rapidly, and the market capacity expanded rapidly. Rising market demand attracted into the domestic large-scale engineering machinery enterprises, Hunan Yu Tai heavy production of small rotarydiggingmachine relatively affordable price
Q:Rotary drilling rig deep hole Doumen difficulties what happened?
It can not be completed by simple drilling technology (rotary drilling rig does not need gas, water circulation is not needed, and soil is imported by spiral sheet, which we call simple drilling process)
Q:Do you need electricity for rotary drilling rig?
If you don't use electric drive, it depends on hydraulic oil
Q:What is a rotary cast in place pile?
Engineering terminology, generally refers to the construction of rotary drilling machine pile type, the full name of rotary drilling pile, engineering referred to as rotary pile. Due to the use of mechanical work, the number of workers is not high, it can save a lot of labor costs.
Q:Can rotary drilling machine be used in rock layer?
The rock layer depends on the hardness, I have seen the 280 rig called 700KPA mudstone and 2200KPA granite, and 250 rigs played 4000KPA to beat rock schist, the key lies in the construction of rotary drilling rig, a rock speed is very slow.
Q:Tire type rotary drilling rig, drilling depth of 15 meters, diameter 1.2. This machine is how much money.
I have been to the factory, and I can not say it is a lie. The equipment may be used in local geological conditions.
Q:Long spiral applies to high-speed rail construction, civil construction, rotary excavation in relatively large diameter foundation construction, such as bridge foundation construction is more common.
Drilling technology and principle of rotary drilling rig. The first is through the rotary drilling rig's own walking function and mast luffing mechanism makes the drill can quickly reach the pile position, the mast guide barrel drill will lower the drill pipes with valve at the bottom of the hole are arranged on the power head device for drill rig, provide torque, pressure device through the pressure head will add pressure to the way drill pipe, drill bits, rotary rock and soil, and directly in the drill rig, and then by the lifting device and the telescopic rod will be made drill hole dumping, such cycles, constantly borrow, dumping, straight to the drilling depth to the design. For the good cohesive rock soil, dry or clear water drilling can be adopted. But in the loose and easy to collapse formation, the static mud wall drilling must be adopted.

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