A prospecting Bureau Machinery Manufacturing Plant of the original pump group is powered by the PZ12V190B diesel engine, through the cardan shaft, linkage unit, and then transmitted to the triangular belt drive 3NB21300 type drilling pump. The large unit structure, transportation difficulties, and poor performance of diesel speed, can not meet the needs of drilling workover process. And due to the reliability of diesel engines, linkage poor, frequent downtime maintenance situation, to the user caused many unnecessary losses. According to the current drilling needs of the Central Plains Oilfield in Indonesia and Saudi Arabia, we developed a new type of TJBZ01 trailing pump group on the basis of the original pump group. This type of pump group has the advantages of superior performance, reasonable structure and good transmissibility. It is suitable for drilling operations in various complicated environments and greatly improves the defects of the original pump group such as complex structure and poor practicability. First, the structural characteristics and main technical parameters 1, structural characteristics TJBZ01 type trailer-mounted pump group using Cat Company 3412E EFI diesel instead of domestic PZ12V2190B diesel engine as a power machine. The machine is small in size, light in weight, high in mechanical efficiency, low in fuel consumption, convenient in use and maintenance, good in emission characteristics and superior in cold start performance, and can meet the requirements of F2800 type or F21300 type mud pump under various working conditions. The pump group is equipped with BY801D hydraulic transmission instead of JS321000-type reducer and linkage device, which uses a single-phase to the heart of the three-phase integrated with torque converter, planetary gear mechanical transmission, hydraulic control system with load Change, can automatically switch to torque or lock condition "This configuration not only greatly reduces the volume, but also take advantage of BT801D-type hydraulic transmission speed governing characteristics to meet drilling conditions in different conditions of the drilling fluid displacement Different from pressure requirements "The hydraulic transmission offers 8 speed gears. Use F2800 or F21300 mud pump instead of the original 3NB21300C mud pump. This type of drilling pump with light weight, advanced structure, uniform displacement, easy maintenance and so on. The pump group uses V251.5 universal coupling coupling hydraulic torque converter output and mud pump input shaft, thus replacing the original V-belt drive. Shorten the transmission distance, improve the transmission efficiency and prolong the service life. The pump configuration 30t high and low semi-trailer chassis, the chassis girder 450mm welding process steel, double bridge using ZS12B-type structure, the selection of 11.00220 Yellow tire, dual-chamber brake. In order to increase the stability of the entire unit, the arrangement of six Fuwa 28t bearing leg device, symmetrical arrangement, the long-term operation of the entire unit off the ground "for transport operations, with a Mercedes-Benz tractor pump group Front 50 # traction pin, take-back device can be long-distance driving. 2, the main technical parameters Chassis type 30t high and low double bridge semi-trailer chassis double axle wheelbase 1300mm tractor Mercedes-Benz front traction 50 # traction pin slew radius ; 2200mm diesel engine model Cat3412E hydraulic transmission model BY801D drilling mud pump F2800 or F21300 universal coupling U251.5 Dimensions (length, width and height) 11700mm · 3000mm · 1400mm Second, the power transmission process The pump group work , The power generated by the diesel engine is transmitted to the drilling pump through the coupling after passing the torque of the hydraulic transmission, and in the process, the turning motion is converted into the reciprocating motion and the mechanical energy is converted into the hydraulic energy, that is, the power from the diesel engine Force transmission (variable speed, torque) y universal coupling y drilling pump. Third, the use of 1999 from the first TJBZ01 trailer Up to now, 8 sets of pumps have been used in DuRi and Minas fields in Indonesia since Saudi Aramco's "China 2" drilling crew. Based on the users' feedback, the TJBZ01 pump sets are running smoothly, with reliable quality and operation Simple, not only to reduce the labor intensity of workers, improve the working environment, to better meet the current drilling and workover mud parameters on the parameters, but also has very good transportability, therefore, by the drilling crew welcome Fourth, the conclusion (1) superior performance, high reliability, less wearing parts, can work under complex environmental conditions. (2) advanced and reasonable structure, the entire device small size! Light weight diesel engine, transmission, coupling, drilling Pump are placed on the chassis of the car compact and reasonable "(3) installation and maintenance is simple, low cost, does not require complex foundation Installation is simple, long life, easy maintenance. (4) good transportability, the use of trailer-mounted structure, transportation and mobility flexible.