CN203104204U

CN203104204U - Top-drive system

Info

Publication number: CN203104204U
Application number: CN 201220726306
Authority: CN
Inventors: 张贵德; 李春生; 蒋松松; 李想; 耿建华; 黎恒磊
Original assignee: CNPC Great Wall Drilling Co
Current assignee: China National Petroleum Corp; CNPC Great Wall Drilling Co
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2013-07-31
Anticipated expiration: 2022-12-26

Abstract

The utility model discloses a top-drive system. The top-drive system comprises a permanent-magnet speed-regulating motor, as well as an upper gearbox and a lower gearbox which are in two-stage gearing-down and arranged in a splitting manner, wherein the upper gearbox is connected with the output shaft of the permanent-magnet speed-regulating motor, and the lower gearbox is connected with a top-drive main shaft; and the power of the permanent-magnet speed-regulating motor is transferred to the top-drive main shaft via the upper gearbox and the lower gearbox, so as to drive a drilling tool to rotate to finish well drilling work. According to the top-drive system disclosed by the utility model, the output shaft of the motor and the top-drive main shaft are concentrically arranged, so that limits on the dimensions of the motor are fewer, the overall dimensions of the top-drive system are reduced, and the bearing effect of the top-drive gearboxes is improved, thus reducing the machining cost and reducing the difficulty of ordinary maintenance work. Moreover, with the adoption of the disc-type permanent-magnet speed-regulating motor, the top-drive system has the advantages of being small in axial dimensions, high in power output accuracy, good in controllability, high in power factor, large in the maximum output torque, and the like.

Description

The top drive system

Technical field

The utility model relates to the oil electromechanical engineering, especially a kind of top drive system.

Background technology

As shown in Figure 1, each model top is driven and is all adopted single gear box to realize double reduction at present, the motor outputting power is passed to the top drive main shaft, and washing pipe mechanism and motor all are positioned at upper gear case, and adopt flange to connect.

Because gearbox output shaft (main shaft is driven on the top) must be mid-, make the washing pipe mechanism (slurry channel assembly) that is connected with this main shaft also must put middle installation.Little tonnage top is driven and is all adopted single motor-driven, because the existence of washing pipe mechanism, make motor must be installed in left or the right side of gear box top center and inclined to one side after, this has caused the size of Width bigger, because the derrick space is limited, must strict volume and the power of controlling top-drive motor.

Simultaneously because the general weight of motor is bigger, and the structure of biasing can cause seriously laying particular stress on of gear box, drive on the influence top goes up, shackle and rise, tripping operation.On the other hand, the motor that drive on existing top adopts common phase asynchronous alternating current machine, and its axial dimension is bigger, has occupied the space on the bigger height, and output accuracy is limited, and max. output torque is not enough, can not adapt to complicated operating mode neatly.

The utility model content

Problem at the prior art existence, the purpose of this utility model is to provide a kind of output accuracy and max. output torque that improves motor, and, push up width and the height that drives thereby dwindle to greatest extent to the top drive system that overall structure rearranges, realize pushing up and drive design of miniization.

For achieving the above object, a kind of top of the utility model drive system, comprise upper gear box and lower tooth roller box that permanent magnetism velocity modulation electric engine, double reduction transmission split are provided with, upper gear box links to each other with the output shaft of permanent magnetism velocity modulation electric engine, the lower tooth roller box drives main shaft with the top and is connected, the power of permanent magnetism velocity modulation electric engine passes to the top via upper gear box and lower tooth roller box and drives main shaft, drives the drilling tool rotation and finishes drillng operation.

Further, described permanent magnetism velocity modulation electric engine is the desk permanent-magnet buncher.

Further, be connected by the major axis that compound gear is set between described upper gear box and the lower tooth roller box, finish the transmission of power.

Further, described compound gear comprises the gear wheel that is arranged on major axis top, the pinion of major axis bottom.

Further, the main shaft arranged concentric is driven on described motor output shaft and top.

Further, the space between described upper gear box and the lower tooth roller box is provided with slurry channel.

Further, described upper gear box comprises three pinions that match: described gear wheel, idle pulley and motor output shaft gear, under the situation that does not change gearratio, in order to piece together central moment, idle pulley is arranged between gear wheel and the motor output shaft gear, and the motor output shaft gear is arranged on the described motor output shaft.

Further, described lower gear case comprises two pinions that cooperatively interact: described pinion and main shaft gear wheel, the main shaft gear wheel is installed in described top and drives on the main shaft.

The utility model drives the main shaft arranged concentric with motor output shaft and top, makes motor size limited less, and dwindles the overall dimensions that drive on the top, and improves the top and drive gear box load-bearing effect, has reduced processing cost, has reduced the difficulty of maintenance work.And adopt the desk permanent-magnet buncher to have advantages such as axial dimension is little, power output accuracy height, controllability is good, power factor (PF) is high, max. output torque is big.

Description of drawings

Fig. 1 is a drive system structural representation in top in the prior art;

Fig. 2 is the utility model top drive system structural representation;

Fig. 3 is the utility model top drive system sectional structure schematic diagram;

Fig. 4 is the upper gear box structural representation;

Fig. 5 is a lower gear box structure schematic diagram.

Embodiment

Below, with reference to the accompanying drawings, the utility model is more fully illustrated, exemplary embodiment of the present utility model has been shown in the accompanying drawing.Yet the utility model can be presented as multiple multi-form, and should not be construed as the exemplary embodiment that is confined to narrate here.But, these embodiment are provided, thereby make the utility model, and scope of the present utility model is fully conveyed to those of ordinary skill in the art comprehensively with complete.

In order to be easy to explanation, here can use such as " on ", D score " left side " space relative terms such as " right sides ", be used for element shown in the key diagram or feature relation with respect to another element or feature.It should be understood that except the orientation shown in the figure spatial terminology is intended to comprise the different azimuth of device in using or operating.For example, if the device among the figure is squeezed, be stated as the element that is positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, the exemplary term D score can comprise upper and lower orientation both.Device can otherwise be located (revolve turn 90 degrees or be positioned at other orientation), and the relative explanation in used here space can correspondingly be explained.

To shown in Figure 5, the utility model top drive system comprises upper gear box 2 and lower tooth roller box 3 that permanent magnetism velocity modulation electric engine, double reduction transmission split are provided with as Fig. 2, is connected by the major axis 4 that compound gear is set between upper gear box 2 and the lower tooth roller box 3.Compound gear comprises the gear wheel 9 that is arranged on major axis 4 tops, the pinion 5 of major axis 4 bottoms.

Upper gear box 2 comprises major axis top gear wheel 9, idle pulley 10 and the motor output shaft gear 12 that cooperatively interacts and install, wherein: major axis top gear wheel 9 is installed in major axis 4 tops, motor output shaft gear 12 is arranged on the motor output shaft 13, idle pulley 10 is installed on the idler shaft 14, under the situation that does not change gearratio, in order to piece together central moment, idle pulley 10 is arranged between gear wheel 9 and the motor output shaft gear 12, and meshes simultaneously with two gears.Lower tooth roller box 3 comprises major axis lower pinion 5 and the main shaft gear wheel 11 that cooperatively interacts and install, and major axis lower pinion 5 is installed in the bottom of described major axis 4, and main shaft gear wheel 11 is installed in the top and drives on the main shaft 6.

In the utility model, permanent magnetism velocity modulation electric engine power passes to the top via motor output shaft 13, motor output shaft gear 12, idle pulley 10, major axis top gear wheel 9, major axis 4, major axis lower pinion 5, main shaft gear wheel 11 successively and drives main shaft 6, finishes drillng operation thereby drive the drilling tool rotation.

And, permanent magnetism velocity modulation electric engine is a desk permanent-magnet buncher 1 in the utility model, owing to adopt the design of detachable gear wheel case, the upper gear box 2 of realizing the double reduction transmission is scattered in up-down structure with lower tooth roller box 3, two gear boxes realize that respectively one-level slows down, and the space of reserving between upper gear box 2 and the lower tooth roller box 3 is to slurry channel 8(washing pipe mechanism) be provided with installing space.

Motor output shaft 13, slurry channel 8(washing pipe mechanism) center and top drive main shaft 6 arranged concentric, make desk permanent-magnet buncher 1 size-constrained less, and dwindle and push up the overall dimensions that drives, solved the space problem on the motor Width, also improved the stressing conditions of gear box, and gear box load-bearing effect is driven on the improvement top.Like this, under the prerequisite that does not influence slurry channel, it is concentric to have realized that main shaft is driven on motor output shaft and top, has saved the top and has driven overall dimensions, has avoided the biasing of motor, has improved and has pushed up the stressing conditions that drives gear box.And then reduced processing cost, reduced the difficulty of maintenance work.

Key is, first desk permanent-magnet buncher 1 has been incorporated in the drive system of top in the utility model, and with the main motor that desk permanent-magnet buncher 1 drives as the top, this has started the beginning in this area.Because desk permanent-magnet buncher 1 axial dimension is less, can reduce the height that drive on whole top significantly, realizes pushing up and drive integrally-built miniaturization.And desk permanent-magnet buncher 1 has power output accuracy height, and controllability is good, the power factor (PF) height, and advantage such as max. output torque is big, it can adapt to drilling condition more neatly.

Claims

1. top drive system, it is characterized in that, this system comprises upper gear box and the lower tooth roller box that permanent magnetism velocity modulation electric engine, double reduction transmission split are provided with, upper gear box links to each other with the output shaft of permanent magnetism velocity modulation electric engine, the lower tooth roller box drives main shaft with the top and is connected, the power of permanent magnetism velocity modulation electric engine passes to the top via upper gear box and lower tooth roller box and drives main shaft, drives the drilling tool rotation and finishes drillng operation.

2. top as claimed in claim 1 drive system is characterized in that, described permanent magnetism velocity modulation electric engine is the desk permanent-magnet buncher.

3. top as claimed in claim 1 drive system is characterized in that, is connected by the major axis that compound gear is set between described upper gear box and the lower tooth roller box.

4. top as claimed in claim 1 drive system is characterized in that, described compound gear comprises the gear wheel that is arranged on major axis top, the pinion of major axis bottom.

5. top as claimed in claim 1 drive system is characterized in that the main shaft arranged concentric is driven on described motor output shaft and top.

6. top as claimed in claim 1 drive system is characterized in that, the space between described upper gear box and the lower tooth roller box is provided with slurry channel.

7. top as claimed in claim 4 drive system, it is characterized in that, described upper gear box comprises three pinions that match: described gear wheel, idle pulley and motor output shaft gear, under the situation that does not change gearratio, in order to piece together central moment, idle pulley is arranged between gear wheel and the motor output shaft gear, and the motor output shaft gear is arranged on the described motor output shaft.

8. top as claimed in claim 4 drive system is characterized in that, described lower gear case comprises two pinions that cooperatively interact: described pinion and main shaft gear wheel, the main shaft gear wheel is installed in described top and drives on the main shaft.