CN201786241U

CN201786241U - Top drive device directly driven by motor

Info

Publication number: CN201786241U
Application number: CN2010205115070U
Authority: CN
Inventors: 王维旭; 陈思祥; 高明; 弓英明; 张鹏
Original assignee: Baoji Oilfield Machinery Co Ltd
Current assignee: Baoji Oilfield Machinery Co Ltd
Priority date: 2010-08-31
Filing date: 2010-08-31
Publication date: 2011-04-06
Anticipated expiration: 2020-08-31

Abstract

The utility model discloses a top drive device directly driven by motor. The upper part of a shell is provided with the motor. The upper part of the motor is provided with a washing pipe. The washing pipe is connected with a goose neck pipe. A spindle of the motor extends out of the shell to be connected with an internal blowout preventer. A pipe processing system is arranged between a main connection lug of the shell and the lower section of the internal blowout preventer. A connecting rod is connected between the upper section of the internal blowout preventer and the middle section of the pipe processing system. A hydraulic cylinder is connected between a connecting rod connection lug in the middle of the connecting rod and the main connection lug. Hooks are arranged at the lower end of the shell along the circumference. Suspended clips are hung on the hooks by hangers. The utility model has the advantages that the device adopts the permanent magnet low-speed high-torque motor to directly drive the top drive spindle, reduces the transmission link, has small volume, light weight and simple structure, is convenient to process and has low cost and high transmission efficiency.

Description

A kind of top driving device of motor direct drive

Technical field

The utility model belongs to the oil exploration equipment technical field, relates to a kind of top driving device of motor direct drive.

Background technology

Top driving device is the device that drillng operation must be used, and general employing electro-motor (or hydraulic motor) driven wheel reduction box is driven on conventional top, is rotated drillng operation by the gear reduction box drive shaft again.The subject matter that this kind structure is brought is to have increased reduction box, causes the volume of top driving device to increase, and weight increases, processed complex, and cost strengthens; The forcedlubricating system that reduction box adopts often produces oil leakage phenomenon, contaminated environment; The transmission of power connection is long, causes mechanical efficiency to descend.

Summary of the invention

The purpose of this utility model provides a kind of top driving device of motor direct drive, has solved top of the prior art and has driven problems such as transmission chain length, efficient are low, easy oil leakage, cost height.

The technical scheme that the utility model adopted is, a kind of top driving device of motor direct drive is equipped with motor on housing top, on the top of motor washing pipe is installed, and washing pipe is connected with gooseneck; The main shaft of motor stretches out housing and is connected with inner blowout preventer; Between the main lug of housing and the hypomere of inner blowout preventer the pipe treatment system is installed, is connected with connecting rod between the stage casing of the epimere of inner blowout preventer and pipe treatment system, be connected with hydraulic cylinder between the middle part connecting rod lug of connecting rod and the main lug; The lower end edge circumference of housing is provided with hook, is lifted with elevator by suspension ring on the hook.

The beneficial effects of the utility model are that the top driving device of employing motor direct drive saves reduction box, has improved transmission efficiency; Simple in structure, easy to process, reduced volume and weight, reduced cost.

Description of drawings

Fig. 1 is the structural representation that the utility model directly drives top driving device;

Fig. 2 is the structural representation that the utility model has elevator.

Among the figure, 1. washing pipe, 2. motor, 3. housing, 4. pipe treating apparatus, 5. inner blowout preventer, 6. gooseneck, 7. main shaft, 8. suspension ring, 9. elevator, 10. connecting rod, 11. hydraulic cylinders, 12. main lugs, 13. connecting rod lugs, 14. hooks.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is elaborated.

As Fig. 1, Fig. 2, structure of the present utility model is, on housing 3 tops motor 2 is installed, and by bolt washing pipe 1 arranged on the top of motor 2, and washing pipe 1 is connected with gooseneck 6; The main shaft 7 of motor 2 stretches out housing 3 and is connected with inner blowout preventer 5, and inner blowout preventer 5 and main shaft 7 tighten by screw thread, and adopt the flange pretension; Between the main lug 12 of housing 3 and the hypomere of inner blowout preventer 5 pipe treatment system 4 is installed, be connected with connecting rod 10 between the stage casing of the epimere of inner blowout preventer 5 and pipe treatment system 4, be connected with hydraulic cylinder 11 between the middle part connecting rod lug 13 of connecting rod 10 and the main lug 12; The lower end edge circumference of housing 3 is provided with hook 14, and hook is lifted with elevator 9 by two suspension ring 8 on 14, and elevator 9 is positioned at inner blowout preventer 5 below correspondence positions, and the hook that elevator 9 bears when making a trip carries, and hook is carried merits and demerits suspension ring 8 is delivered on the housing.

Main shaft 7 passes housing 3 and the bearing suspension by being installed in housing 3 inside on housing, and the hook when main shaft 7 bears drilling well carries, and hook carried by the bearing that is installed in housing 3 inside is delivered on the housing 3; Main shaft 7 is simultaneously as the power transmission shaft of motor 2, and motor 2 transmits torque to main shaft 7 and drives drill string and is rotated operation; Main shaft 7 is a hollow shaft, for mud leaves passage; Main shaft 7 passes motor 2 back and seals with the bottom of gooseneck 6 washing pipe 1 in, and mud passes through gooseneck 6, main shaft 7, inner blowout preventer 5, enters drilling rod again and carries out mud circulation.

Motor 2 adopts permanent magnet low-speed high pulling torque alternating-current variable frequency motor, directly drives the main shaft 7 of top driving device.Motor 2 is one or many series connection.During drillng operation, 4 pairs of tool joints of pipe treating apparatus and top are driven the protection joint of main shaft lower end and are gone up the shackle operation.

The utility model compared with prior art, adopt permanent magnet low-speed high pulling torque motor direct-drive top to drive main shaft, reduce main motor and pushed up the transmission links such as gear reduction box that drive between the main shaft, simultaneously also cancelled reduction box forcedlubricating system etc., solved in the past that the top drives that transmission chain length, efficient are low, easy oil leakage, high in cost of production problem.

Claims

1. the top driving device of a motor direct drive, it is characterized in that: on housing (3) top motor (2) is installed, on the top of motor (2) washing pipe (1) is installed, washing pipe (1) is connected with gooseneck (6); The main shaft (7) of motor (2) stretches out housing (3) and is connected with inner blowout preventer (5); Between the main lug (12) of housing (3) and the hypomere of inner blowout preventer (5) pipe treatment system (4) is installed, be connected with connecting rod (10) between the stage casing of the epimere of inner blowout preventer (5) and pipe treatment system (4), be connected with hydraulic cylinder (11) between the middle part connecting rod lug (13) of connecting rod (10) and the main lug (12); The lower end edge circumference of housing (3) is provided with hook (14), and hook (14) is gone up and is lifted with elevator (9) by suspension ring (8).

2. the top driving device of motor direct drive according to claim 1 is characterized in that: described inner blowout preventer (5) tightens by screw thread with main shaft (7), and adopts the flange pretension.