CN2192714Y

CN2192714Y - Long Service life screw arbor drilling tool

Info

Publication number: CN2192714Y
Application number: CN 94240210
Authority: CN
Inventors: 王清; 单既明; 赵洪才; 王家友
Original assignee: JIAOLONG MACHINERY PLANT WEIFANG
Current assignee: JIAOLONG MACHINERY PLANT WEIFANG
Priority date: 1994-04-20
Filing date: 1994-04-20
Publication date: 1995-03-22
Anticipated expiration: 2004-04-20

Abstract

The utility model relates to a power drilling tool that is used for the well-digging of the oil development and the work of the geological prospecting. The utility model is made up with the four parts of a by-pass valve, a motor, a cardan axle and a drive axle which are linked in turn. The motor is made up by a screw stator 8 whose inner cross section is penta encephalic and is fixed to the inner motor case and a spiral rotor 9 whose inner cross section is quad and is installed on the inner stator 8. The meshing curve of the screw stator 8 and the spiral rotor 9 is a line shape of the equidistant hypereutectoid line. The progression of the motor is 6. The cardan axle 10 that connects with the spiral rotor 9 and the drive axle 12 is an internal sealing structure of the petal type. The power and the service life is bigger and longer than that of the traditional screw arbor drilling tool.

Description

Long Service life screw arbor drilling tool

The utility model relates to a kind of power drilling tool of the usefulness of digging a well in oil development, geological prospecting operation.

In China and even worldwide oil development, geological prospecting operation, rotating disk bores to be beaten straight well and still occupies an leading position up till now.The high-power diesel engine supporting with it, slush pump consumes energy are very big, and it is dangerous, particularly to overcome the powerful frictional resistance of the borehole wall in the deep-well section, make rotating speed reduce, drill footage is slow, greatly reduce drilling efficiency, for this reason, relevant oil field was once made of the helicoid hydraulic motor replacement rotating disk brill of traditional structure and was played the straight well test.Only, cause short, poor reliability of its life-span, the operating mode that straight well is beaten in the oil field that can not suit because of existing helicoid hydraulic motor exists problem aspect the structural performance.

The purpose of this utility model is by the improvement to existing helicoid hydraulic motor structure, provide a kind of both can directed, deflecting, the discharge capacity that can beat straight well again is big, power height, the helicoid hydraulic motor that the life-span is long.

The utility model is to realize like this, bypass valve shell, motor case, universal drive shaft shell, power transmission shaft shell are fixedly connected sequentially, overflow structure bypass valve through spring reset is installed in the bypass valve shell, in motor case, be fixed with section and be five helical stator, the helical rotor that section is a four-head is installed in the helical stator, the front end of helical rotor is connected with power transmission shaft by universal drive shaft, and its technical essential is: helical rotor and helical stator pitch curve are equidistant hypocycloid line style; Motor progression is six grades; Universal drive shaft adopts the petal type inner seal structure, has so just constituted the said helicoid hydraulic motor of the utility model.

Because helical rotor and helical stator pitch curve in the motor sub-assembly of the present utility model are equidistant hypocycloid line style, optimized the meshing performance of helical rotor and helical stator, reduced the internal drag of motor widely, the wearing and tearing between helical rotor and the helical stator have been alleviated, thereby improved the power of helicoid hydraulic motor, prolonged the application life of helicoid hydraulic motor.In addition motor progression is increased to 6 grades, it not only helps improving the power of motor, can guarantee the stability of motor performance equally, improve the life-span of motor, moreover, universal drive shaft adopts the petal type inner seal structure, and it mainly is the stability that guarantees that helical rotor and power transmission shaft rotate, to prolong the life-span of helicoid hydraulic motor.The application life of this helicoid hydraulic motor is more than 120 hours.

Fig. 1 is a structure principle chart of the present utility model;

Fig. 2 is the structure chart of the utility model bypass valve;

Fig. 3 is the structure chart of the utility model motor sub-assembly;

Fig. 4 is an A-A sectional drawing among Fig. 3;

Fig. 5 is the structure of the utility model universal drive shaft assembly;

Fig. 6 is the utility model transmission shaft component structure chart.

Below in conjunction with accompanying drawing the utility model is described in detail, bypass valve shell 1 of the present utility model, motor case 2, universal drive shaft shell 3, power transmission shaft shell 4 are fixedly connected sequentially, and these shells all are cylindrical shapes.That installs in bypass valve shell 1 has spring reset overflow structure for the hollow spool 5 of a fixing valve pocket 7 and an activity is installed in overflow valve shell 1, spring 6 structures are installed between valve pocket 7 and spool 5.Be fixed with section that rubber makes and be five helical stator 8 in motor case 2, it is the helical rotor 9 of four-head that section is installed in helical stator 8, and the pitch curve of helical rotor 9 and helical stator 8 is equidistant hypocycloid line style.The front end of helical rotor 9 be contained in universal drive shaft shell 3 in universally be connected to axle 10, universal drive shaft 10 is the petal type inner seal structure.The front end of universal drive shaft 10 is connected with power transmission shaft 12 be installed in power transmission shaft shell 4 by bearing 11 in.

Claims

1, the high life helicoid hydraulic motor, it comprises the bypass valve shell (1) that is fixedly connected sequentially, motor case (2), universal drive shaft shell (3), power transmission shaft shell (4), the bypass valve of spring reset overflow structure is installed in bypass valve shell (1), in motor case (2), be fixed with section and be five helical stator (8), the helical rotor that section is a four-head (9) is installed in helical stator (8), helical rotor (9) is connected with power transmission shaft (12) through universal drive shaft (10), it is characterized in that: helical stator (8) is equidistant hypocycloid line style with the pitch curve of helical rotor (9), motor progression is 6 grades, and universal drive shaft (10) is the petal type inner seal structure.