CN218376426U

CN218376426U - Dual-drive balanced petroleum lifting mechanism

Info

Publication number: CN218376426U
Application number: CN202222644022.4U
Authority: CN
Inventors: 姚立波; 祁红飞; 陈益民; 靳伟; 胡小臣
Original assignee: Zhejiang Saifu Electromechanical Technology Co ltd
Current assignee: Zhejiang Saifu Electromechanical Technology Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-01-24
Anticipated expiration: 2032-10-09

Abstract

The utility model provides a dual drive balanced type petroleum lifting mechanism mainly includes motor A and motor B, all install pinion A on the main shaft A at motor A both ends, all install pinion B on the main shaft B at motor B both ends, main shaft A and main shaft B top central point put and are provided with the major axis, make the axis of main shaft A and main shaft B parallel with the axis of major axis and symmetry set up, the axis of main shaft A and main shaft B forms the contained angle with the line in the axis of major axis respectively, wherein the axle extension part at major axis both ends is used for installing the swing arm of petroleum pumping unit; a bull gear A and a bull gear B are mounted on the long shaft 7, the bull gear A and the bull gear B are respectively meshed with the pinion gear A and the pinion gear B to form a single speed reduction structure, and the bull gear A and the bull gear B are helical gears and are opposite in direction. The beneficial effects of the utility model are that: the double-motor symmetrical design structure is adopted, so that the torque is very large when the double motors are started, and the double motors operate simultaneously; because the directions of the helical gears are opposite, the axial stress balance on the main shaft and the long shaft can be ensured, and the single-side stress can be avoided; after the double-motor driving is adopted, the two sides of the large gear are stressed, so that the left radial stress and the right radial stress of the long shaft are balanced, and the stress on one side is avoided.

Description

Dual-drive balanced type petroleum lifting mechanism

Technical Field

The utility model relates to a beam-pumping unit field mainly is a dual drive balanced type oil hoist mechanism.

Background

The power mechanism and the speed reducing mechanism of the oil pumping unit generally comprise a motor, a belt pulley and a gear box, and the problems of belt quality, belt installation, load unbalance of the oil pumping unit and the like can be caused by adopting a belt and belt pulley structure.

In order to solve the above problems, chinese patent CN 209458360U discloses a pumping unit belt efficiency improving device, which comprises a first belt pulley, a belt and a second belt pulley, wherein the first belt pulley is rotatably connected with the second belt pulley through the belt, a belt tension elastic adjusting device is arranged at the bottom of the belt, a replacement belt adjusting device is arranged at the bottom of the belt tension elastic adjusting device, and a base is fixedly connected to the bottom of the replacement belt adjusting device and the bottom of the second belt pulley. Need not to change at the moving motor when changing the belt, convenient and fast more, dual safety protection protects operator's personal safety.

However, the pumping unit still adopts a mode that the motor is connected with the gear box through the belt pulley to form a power mechanism and a speed reducing mechanism, the structure is complex and large in size, and the transmission ratio needs to be changed during speed change; the sealed gear box needs to be filled with engine oil, so that the maintenance cost is high; when the oil pumping unit is used, the energy consumption is high (the electric efficiency is less than 60%), and most importantly, the problem of load unbalance of the oil pumping unit is not solved due to the fact that the torque is very large when the oil pumping unit is started.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide an energy-conserving high-efficient, maintenance cost is extremely low, small dual drive balanced type oil hoist mechanism.

The purpose of the utility model is achieved by the following technical scheme. A dual-drive balanced type petroleum lifting mechanism mainly comprises a permanent magnet synchronous motor A and a motor B, wherein pinions A are mounted on main shafts A at two ends of the motor A, pinions B are mounted on main shafts B at two ends of the motor B, long shafts are arranged in central positions above the main shafts A and the main shafts B, so that the axes of the main shafts A and the main shafts B are parallel to and symmetrically arranged with the axis of the long shafts, included angles are formed between the axes of the main shafts A and the main shafts B and the connecting line of the axes of the long shafts respectively, and shaft extension parts at two ends of the long shafts are used for mounting swing arms of a petroleum pumping unit; a bull gear A and a bull gear B are mounted on the long shaft 7, the bull gear A and the bull gear B are respectively meshed with the pinion gear A and the pinion gear B to form a single speed reduction structure, and the bull gear A and the bull gear B are helical gears and are opposite in direction.

Furthermore, the ends of the main shaft A and the main shaft B are provided with a section of conical braking shaft head for matching with a brake.

Furthermore, motor bearings are arranged on the main shaft A and the main shaft B.

Furthermore, a bearing and a bearing seat are arranged on the long shaft.

Furthermore, the motor A and the motor B are arranged on the base, and the motor A, the motor B, the pinion A, the pinion B, the gearwheel A and the gearwheel B are all arranged in the protective cover or the original gearbox.

Furthermore, the motor A and the motor B adopt permanent magnet synchronous motors, and are controlled by a frequency converter to realize stepless speed regulation.

Furthermore, when the motor A and the motor B are started, the motor A and the motor B operate simultaneously, and the output power is low after the stable operation.

Furthermore, lubricating grease is additionally arranged at the matching part of the bull gear A and the pinion gear A and the matching part of the bull gear B and the pinion gear B.

The utility model has the advantages that:

1. the double-motor symmetrical design structure is adopted, the torque of a single motor cannot be too large in the space, the double-motor symmetrical design is adopted, the space utilization is reasonable, and the stress distribution is uniform; the torque is very large when the motor is started, and the double motors operate simultaneously; because the directions of the bevel gears are opposite, the axial stress balance on the main shaft and the long shaft can be ensured, and the single-side stress can be avoided; after the double-motor driving is adopted, the two sides of the large gear are stressed, so that the left radial stress and the right radial stress of the long shaft are balanced, and the stress on one side is avoided.

2. The power mechanism and the speed reducing mechanism of the oil pumping unit are integrated in the protective cover or the original gear box, and the original equipment is slightly changed.

3. The motor directly drives the big gear wheel through the small gear wheel to achieve the aim of speed reduction, the motor adopts a permanent magnet synchronous motor and is controlled by the frequency converter, stepless speed regulation can be realized, and because the torque is very large when the motor is started, the double motors operate simultaneously, and the torque is reduced after stable operation, so that the low-power output can be realized after the stable operation, and the energy is saved.

4. The helical gear of single speed reduction just can satisfy the operation as long as add lubricating grease, does not need constantly to change machine oil like original gear box, so adopts the utility model discloses a relevant material cost can be practiced thrift to the motor.

5. The end parts of the main shaft A and the main shaft B are respectively provided with a section of conical braking shaft head, so that a structure with two ends braking is formed, and the braking is more stable.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Description of reference numerals: the braking device comprises a motor A1, a motor B2, a pinion A3, a pinion B4, a bull gear A5, a bull gear B6, a long shaft 7, a main shaft A8, a main shaft B9, a bearing seat 10, a bearing 11, a motor bearing 12, a base 13, a protective cover 14 and a conical braking shaft head 15.

Detailed Description

The present invention is further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-2, a dual-drive balanced petroleum lifting mechanism mainly comprises a pinion A3, a pinion B4, a gearwheel A5, a gearwheel B6, a long shaft 7, a spindle A8, a spindle B9, a motor A1 and a motor B2, wherein the motor A1 and the motor B2 are installed on a base 13, the motor A1, the motor B2, the pinion A3, the pinion B4, the gearwheel A5 and the gearwheel B6 are all installed in a protective cover 14 or an original gearbox, the motor A1 and the motor B2 form two sets of motor drives, the motor A1 and the motor B2 adopt permanent magnet synchronous motors and are controlled by a frequency converter to realize stepless speed regulation.

All install pinion A3 on the main shaft A8 at motor A1 both ends, all install pinion B4 on the main shaft B9 at motor B2 both ends, be provided with motor bearing 12 on main shaft A8 and the main shaft B9, every motor has 2 group's pinions (drive gear) promptly, separately with output power large gear engagement. The end parts of the main shaft A8 and the main shaft B9 are provided with a section of conical braking shaft head 15 which is used for matching with a brake to realize braking after the motor is powered off.

The central position above the main shaft A8 and the main shaft B9 is provided with a long shaft 7, so that the axes of the main shaft A8 and the main shaft B9 are parallel to and symmetrically arranged with the axis of the long shaft 7, the axes of the main shaft A8 and the main shaft B9 respectively form included angles with the connecting line of the axes of the long shaft 7, and shaft extension parts at two ends of the long shaft 7 are used for installing swing arms of the petroleum pumping unit. A large gear A5 and a large gear B6 (outputting power large gears driven by two pairs (four) of small gears arranged on a motor) are arranged on the long shaft 7, and a bearing 11 and a bearing seat 10 for supporting are also arranged; the large gear A5 and the large gear B6 are respectively meshed and connected with the small gear A3 and the small gear B4 to form a single reduction structure, wherein the large gear A5 and the large gear B6 are bevel gears and are opposite in direction, and the bevel gears are arranged in opposite directions, so that the axial stress balance on the main shaft and the long shaft can be ensured, and the single side stress can be avoided; after the double-motor driving is adopted, the two sides of the large gear are stressed, so that the left radial stress and the right radial stress of the long shaft are balanced, and the single-side stress is avoided.

The utility model discloses with the power unit and the reduction gears integration of beam-pumping unit in protection casing or original gear box, adopt the design of bi-motor, adorn the pinion with the motor shaft both ends and be connected with power take off's gear wheel direct meshing, the integrated installation is in the combination protection casing. Grease is filled, a closed gear box is not needed, engine oil is not needed to be filled, and only the running frequency of the motor is changed during speed change. After the double motors are started to operate, the large gear is driven by the small gear on the motor to rotate so as to achieve the purpose of stepless speed reduction, and meanwhile, the large gear drives the main shaft to rotate, and the main shaft drives the pumping unit to work. The motor adopts a permanent magnet synchronous motor, is controlled by a frequency converter, can realize stepless speed regulation, and can output low power after stable operation and save energy because the torque is very large when starting and the double motors operate simultaneously and the torque becomes small after stable operation.

During assembly, the size of the mechanism can be directly installed in a protective cover of an oil pumping unit or an original gear box through design, two pairs of pinions are positioned through steps on a main shaft, concentricity is symmetrically installed on the main shaft extending from two sides of two motors and fixed and then integrally installed in the protective cover, two ends of a long shaft are symmetrically installed on a pair of large gears through step positioning, the assembly of the large shaft gear can be stably installed on the pinions on two sides of the motors due to the step positioning, lubricating grease is added after the tight joint of the large gears and the pinions is checked, bearings and bearing seats are installed at two ends of the long shaft after a protective cover fixing groove steel base is covered, a bearing outer cover and the protective cover are connected through screws, the dual-drive balanced type oil lifting mechanism is installed, after test running is normal, a swing arm is connected through the long shaft, and a four-rod structure of the oil pumping unit is driven to run.

Will dual drive balanced type oil hoist mechanism is applied to the beam-pumping unit description: the power unit motor of the present mostly beam-pumping unit is connected through modes such as belt pulley and reduction gears gear box usually, this kind of combination energy consumption is high, and is bulky, and the maintenance cost is high, the utility model discloses with power unit directly with the reduction gears combination the kinetic energy loss that has significantly reduced and can integrate to install in the protection casing, it is small safer, the moment of torsion is great when this equipment starts, nevertheless two motor symmetric design lets the atress more even, steady operation back torque reduces, readjustment motor reduces output by a wide margin, more the energy can be saved (the electrical efficiency is greater than 80%), the helical gear of single speed reduction just can satisfy the operation as long as with lubricating grease, do not need constantly change machine oil like the gear box, so adopt the utility model discloses a relevant material cost can be practiced thrift to the motor. The rotating speed of the motor can be freely switched to improve the oil extraction efficiency. The oil extractor has multiple purposes, saves energy, reduces the operation cost, simultaneously can improve the working efficiency of the oil extractor, and reduces the maintenance cost.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. A dual drive balanced type oil hoist mechanism which characterized in that: the oil pumping unit mainly comprises a motor A (1) and a motor B (2), pinions A (3) are mounted on main shafts A (8) at two ends of the motor A (1), pinions B (4) are mounted on main shafts B (9) at two ends of the motor B (2), a long shaft (7) is arranged at the center positions above the main shafts A (8) and the main shafts B (9), so that the axes of the main shafts A (8) and the main shafts B (9) are parallel to and symmetrically arranged with the axis of the long shaft (7), included angles are formed between the axes of the main shafts A (8) and the main shafts B (9) and the connecting line of the axes of the long shaft (7), and shaft extension parts at two ends of the long shaft (7) are used for mounting swing arms of an oil pumping unit; install gear wheel A (5) and gear wheel B (6) on major axis (7), gear wheel A (5) and gear wheel B (6) are connected with pinion A (3), pinion B (4) meshing respectively and are constituted single reduction structure, wherein gear wheel A (5) and gear wheel B (6) are helical gear and opposite direction.

2. The dual drive balanced petroleum lifting mechanism of claim 1, characterized in that: the end parts of the main shaft A (8) and the main shaft B (9) are provided with a section of conical braking shaft head (15) which is used for being matched with a brake.

3. The dual drive balanced oil lifting mechanism according to claim 1 or 2, characterized in that: and motor bearings (12) are arranged on the main shaft A (8) and the main shaft B (9).

4. The dual drive balanced oil lifting mechanism of claim 3, characterized in that: the long shaft (7) is provided with a bearing (11) and a bearing seat (10).

5. The dual drive balanced oil lifting mechanism of claim 4, characterized in that: motor A (1) and motor B (2) install on base (13), motor A (1), motor B (2), pinion A (3), pinion B (4), gear wheel A (5) and gear wheel B (6) all install in protection casing (14) or original gear box.

6. The dual drive balanced oil lifting mechanism of claim 5, characterized in that: the motor A (1) and the motor B (2) adopt permanent magnet synchronous motors and are controlled by a frequency converter to realize stepless speed regulation.

7. The dual drive balanced petroleum lifting mechanism of claim 6, characterized in that: when the motor is started, the motor A (1) and the motor B (2) operate simultaneously, and low-power output is realized after stable operation.

8. The dual drive balanced oil lifting mechanism according to claim 1 or 5, characterized in that: lubricating grease is additionally arranged at the matching part of the bull gear A (5) and the pinion gear A (3) and the matching part of the bull gear B (6) and the pinion gear B (4).