CN100568673C

CN100568673C - Vertical AC asynchronous topped driven motor

Info

Publication number: CN100568673C
Application number: CNB2007100622194A
Authority: CN
Inventors: 尚诗贤; 张培军; 王春喜
Original assignee: Yongji Xinshisu Electric Equipment Co Ltd
Current assignee: CRRC Yongji Electric Co Ltd
Priority date: 2007-06-21
Filing date: 2007-06-21
Publication date: 2009-12-09
Anticipated expiration: 2027-06-21
Also published as: CN101075760A

Abstract

The invention relates to an asynchronous motor, in particular to a vertical AC asynchronous top drive motor. The problem that the domestic top drive motor cannot be manufactured in the prior art is solved. Including the stator assembly, the upper end cover and the lower end cover installed at both ends, and the rotor assembly in the middle of the stator assembly. The rotating shaft of the rotor assembly is matched with the upper end cover and the lower end cover through the non-drive end bearing and the drive end bearing respectively. The shaft end of the non-drive end of the rotating shaft is The upper end cover is stretched out and the non-drive end of the rotating shaft is also sleeved with four-point contact ball bearings. The vertical AC asynchronous top drive motor of the present invention has a novel and reasonable structural design, strong overload capacity, wide constant power area, low failure rate, safe and reliable use, and fully meets the use requirements of the top drive device for oilfield mining machinery. Ended the history of my country's top drive motors relying on imports.

Description

Vertical AC asynchronous topped driven motor

Technical field

The present invention relates to a kind of asynchronous machine, be specially a kind of vertical AC asynchronous topped driven motor.

Background technology

Oil drilling top drive driving device is to drive a kind of new equipment that drilling tool replaces rig tradition rotating disk from top by motor, has starting up and down flexibly, easy-to-operate, production efficiency advantages of higher.It is one of 21 century drilling well three big technical equipments, is representing the highest level of drilling technology and mechanical-electrical-hydraulic integration petroleum special equipment.Because technological element of a product height, manufacture difficulty are big, are abroad monopolized for a long time.In recent years, along with the strategy that China Petroleum enforcement is walked out, large quantities of drilling crews had participated in the bid work of overseas drilling engineering.In bid, drilling crew whether be equipped with top-drive device become can in one of target essential condition.In the recent period, the top driving device of all positive exploitation oneself of each elephant rig factory.Top-drive motor is the critical component and the device of top driving device, and present domestic top-drive motor almost all adopts the import asynchronous motor.Top-drive motor directly directly drives drilling tool from the top, compact conformation, transmission efficiency height, significantly reduce lock of tool drilling, is the device of the moving rig indispensability of fax from now on.So top-drive motor has extremely wide application and commercialized development prospect.At present in relevant motor basic theory and other practical writing were offered, the document and the report that relate to top driving asynchronous motor configuration aspects did not almost have.

Summary of the invention

The present invention is in order to solve exist in the prior art domestic and can not to make the problem of top-drive motor and a kind of vertical AC asynchronous topped driven motor is provided.

The present invention is realized by following technical scheme, a kind of vertical AC asynchronous topped driven motor, comprise that upper end cover and bottom end cover, the middle rotor of stator assembling that install at stator assembling and two ends thereof assemble, the rotating shaft of rotor assembling cooperates with upper end cover and bottom end cover by non-transmision end bearing and driving end bearing respectively, and rotating shaft non-transmision end axle head stretches out on upper end cover and the rotating shaft non-transmision end and also is with four-point contact ball.

The upper end cover top is provided with blower fan, and blower fan is communicated with upper end cover.

The support iron core of stator assembling comprises the preceding trim ring and the back trim ring at two ends, be provided with the stator punching that overlaps together between two trim rings, the periphery that passes stator punching and trim ring is provided with at least one connecting screw rod, stator punching week, side had at least one groove, and the groove internal fixation has the arm-tie that is welded between preceding trim ring and the back trim ring.Connecting screw rod is four or eight, and groove is four or eight.

Stator punching is a square.Connecting screw rod is distributed in four jiaos of stator punching of rectangle, and groove is uniformly distributed on four limits of stator punching of rectangle.Have ventilation hole on the stator punching.

Compared with prior art, the design that the present invention has adopted rotating shaft non-transmision end axle head to stretch out upper end cover, the rotating shaft non-transmision end axle head part of stretching out upper end cover generally cooperates with braking mechanism in actual applications, so that can motor be stopped operating; Rotating shaft non-transmision end side has adopted the design of four-point contact ball, has adapted to the requirement that whole motor when motor turns round under the rotating shaft erectility is subjected to axial force; Blower fan is set above upper end cover and can makes motor obtain forcing air-cooled fast the design that blower fan is communicated with motor, guarantee the running safety of motor.Vertical AC asynchronous topped driven motor structural design novelty described in the utility model, reasonable, overload capacity is strong, constant power area is wide, failure rate is low, safe and reliable, satisfies the instructions for use of oilfield exploitation machinery top driving device fully.The history of China's top-drive motor dependence on import is through with.

Description of drawings

Fig. 1 is an internal structure schematic diagram of the present invention

Fig. 2 is the structural representation of support iron core

Fig. 3 is figure The A-A profile

The 1-blower fan; 2-coils the bearing of stopping; The 3-round nut; Outer bearing cover before the 4-, the 5-four-point contact ball; The 6-bearing housing; The 7-back-up ring; 8-non-transmision end bearing; The 9-upper end cover; Internal sealed ring before the 10-; The assembling of 11-stator; The assembling of 12-rotor; Internal sealed ring behind the 13-; Inside cap behind the 14-; 15-driving end bearing; The 16-bottom end cover; Outer bearing cover behind the 17-; Internal sealed ring behind the 18-; The 19-rotating seal ring; The 20-rotating shaft, trim ring before the 21-flange, 22-, 23-arm-tie, 24-stator punching, trim ring behind the 25-, 26-ventilation hole, 27-connecting screw rod, 28-blind window

Embodiment

A kind of vertical AC asynchronous topped driven motor, comprise that upper end cover 9 and bottom end cover 16, the stator assembling 11 middle rotors that install at stator assembling 11 and two ends thereof assemble 12, the rotating shaft 20 of rotor assembling 12 cooperates with upper end cover 9 and bottom end cover 16 by non-transmision end bearing 8 and driving end bearing 15 respectively, and rotating shaft 20 non-transmision end axle heads stretch out on upper end cover 9 and rotating shaft 20 non-transmision ends and also are with four-point contact ball 5.

The concrete mounting structure of four-point contact ball 5 is, be fixed with bearing housing 6 on the upper end cover 9, four-point contact ball 5 is positioned at bearing housing 6, and bearing housing 6 is provided with the preceding outer bearing cover 4 that is pressed on the four-point contact ball 5, and four-point contact ball 5 belows also are provided with back-up ring 7.Internal sealed ring 10 before the position of rotating shaft 20 below upper end cover 9 is with.

Upper end cover 9 tops are provided with blower fan 1, and blower fan 1 is communicated with upper end cover 9.

As schematically shown in Figure 2, the support iron core of stator assembling 11 comprises the preceding trim ring 22 and the back trim ring 25 at two ends, be provided with the stator punching 24 that overlaps together between two trim rings, the periphery that passes stator punching and trim ring is provided with at least one connecting screw rod 27, stator punching 24 all sides have at least one groove, and the groove internal fixation has the arm-tie 23 that is welded between preceding trim ring 22 and the back trim ring 25.

Connecting screw rod 27 is four or eight, and groove is four or eight.

Stator punching 24 is a square.Connecting screw rod 27 is distributed in four jiaos of stator punching of rectangle, and groove is uniformly distributed on four limits of stator punching of rectangle.Have ventilation hole 26 on the stator punching 24.

Circular punching is adopted in the rotor core of rotor assembling 12, is laminated in the rotating shaft by rotor key, and is locked in the rotating shaft by round nut.Circular punching has ventilation hole.

The wind that blower fan 1 produces is blown into motor internal by bend pipe and upper end cover 9, divides three the tunnel through motor internal by stator ventilation hole and rotor ventilation hole, motor gas-gap, and the blind window 28 by bottom end cover 16 blows out then, takes away the heat that produces in the motor operation course.

The part that the upper and lower side of rotating shaft 20 stretches out end cap adopts 1: 50 axial cone, driving end shaft extension hot jacket driving cog

Wheel; The blower fan below also is provided with coils the bearing 2 of stopping, and non-transmission axle head cover brake disc coils the brake gear braking brake dishes of installing in the bearing 2 of stopping rotating shaft 20 is stopped operating fast, brake gear use power supply machine mechanical braking.

Driving end bearing 15 adopts the NU2228ECML roller bearing, bears the driving end radial load.Non-transmision end is provided with two bearings: non-transmision end bearing 8 is the NU226ECM roller bearing, bears the non-transmision end radial load; One is QJ326N2 four-point contact ball 5, bears the suffered axial force of whole rotor.On the whole, motor is three bearing arrangements, and support place at two ends respectively has a cylinder ball bearing, in order to bearing radial force.Because travelling gear is an involute helical gear, motor all has bigger axial force when just changing a job work and counter-rotating shackle, so be provided with four-point contact ball at non-transmision end, this four-point contact ball special use is to bear the rotor axial power under the motor operating condition.

The driving end bearing is a non-maintaining type, and the non-transmision end duplex bearing is for refueling structure.

Because the special vertical mounting structure of top-drive motor requires, bottom end cover 16 end faces are provided with flange 21, gear box is connected by flange 21 with bottom end cover 16 end faces.For the lubricating oil that prevents gear box enters motor, dilution drive of motor end bearing lubricating grease, the bottom end cover 16 of motor has back outer bearing cover 17, is provided with rotating seal ring 19 between rotating shaft 20 and the back outer bearing cover 17; Above bottom end cover 16, be provided with back inside cap 14, be provided with back internal sealed ring 13 between rotating shaft 20 and the back inside cap 14.Enter motor with the oil that prevents gear box.

Claims

1. A vertical AC asynchronous top drive motor, including a stator assembly (11) and its upper end cover (9) and lower end cover (16) installed at both ends, the rotor assembly (12) in the middle of the stator assembly (11), the rotor The rotating shaft (20) of the assembly (12) cooperates with the upper end cover (9) and the lower end cover (16) through the non-driving end bearing (8) and the driving end bearing (15) respectively, and it is characterized in that: the non-driving end of the rotating shaft (20) The shaft end stretches out the upper end cover (9) and the non-drive end of the rotating shaft (20) is also covered with a four-point contact ball bearing (5), the lower end cover (16) of the motor is provided with a rear outer bearing cover (17), and the rotating shaft ( 20) and the rear outer bearing cover (17) are provided with a radially rotating sealing ring (19), the upper end cover (9) is fixed with a bearing box (6), and the four-point contact ball bearing (5) is located in the bearing box (6 ), the bearing box (6) is provided with a front outer bearing cover (4) pressed on the four-point contact ball bearing (5), and a retaining ring (7) is provided under the four-point contact ball bearing (5). The end face of the cover (16) is provided with a flange (21), and a fan (1) is provided above the upper end cover (9). The fan (1) is connected with the upper end cover (9). The front pressure ring (22) and the rear pressure ring (25), between the two pressure rings, there are stator punches (24) laminated together, and at least one connecting screw ( 27), there is at least one groove on the peripheral side of the stator punch (24), and the pull plate (23) with two ends welded between the front pressure ring (22) and the rear pressure ring (25) is fixed in the groove.

2. The vertical AC asynchronous top drive motor according to claim 1, characterized in that: the upper and lower ends of the rotating shaft (20) protruding from the end cover adopt a 1:50 shaft cone.

3. The vertical AC asynchronous top drive motor according to claim 1, characterized in that: the stator punch (24) is square.