CN117277683A

CN117277683A - External rotor driving roller special for oil pumping unit

Info

Publication number: CN117277683A
Application number: CN202311293942.9A
Authority: CN
Inventors: 张伟
Original assignee: Heilongjiang Mcneeson Equipment Manufacturing Co ltd
Current assignee: Heilongjiang Mcneeson Equipment Manufacturing Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2023-12-22

Abstract

The invention relates to a special outer rotor driving roller for a pumping unit, which is used as driving power of a tower-type pumping unit and comprises a stator consisting of a coil, an iron core and a roller shaft; the rolling part consists of two parts, namely a roller and a permanent magnet, and is characterized in that: the roller shaft penetrates through and is fixed on the shaft hole of the iron core body, and the coil and the iron core are made into a winding; a threading sleeve is sleeved on the roller shaft, a power line of the coil penetrates through the threading sleeve and is provided with a binding post, and an encoder and a bearing are arranged on the threading sleeve; the other side of the roller shaft is provided with a bearing and a brake, the two bearings are respectively provided with an outer rotor end cover, an outer roller is arranged between the two outer roller end covers, and a permanent magnet is fixed on the inner wall of the outer roller by a fixing frame. The advantages are that: the structure is simple, and no speed reducer exists; the operation is simplified, and the integrated control is performed by a computer host; the failure rate is low, and the maintenance cost is low.

Description

External rotor driving roller special for oil pumping unit

Technical Field

The invention relates to the technical field of tower-type pumping units, in particular to an outer rotor driving roller special for a pumping unit.

Background

The tower type pumping unit has no walking beam, only tower and platform, and the belt and belt roller are used to convert the circular motion of the reversible motor into the vertical linear motion of the pumping rod.

The authorized bulletin days are: 2022, 05 month 17 day, application number: 202122130131.X name: the technical scheme of the Chinese invention patent of the tower type lower power pumping unit records the working principle of the tower type pumping unit, and comprises a platform 5 and a guardrail 1 which are arranged at the top end of a derrick 6, and a bracket 8 which is connected between the middle part of the derrick 6 and a well platform 14, and is characterized in that: the speed reducer 20 is arranged on the base 18 below the derrick 6, and the … … drags the sucker rod by the sucker rod elevator 13 to finish the pumping work action. "

This solution solves most of the problems of the prior art, but some remain. For example, a relatively outstanding problem is that no matter which motor is adopted, a speed reducer is required to be matched, so that the existing pumping unit becomes an insurmountable technical bottleneck, and a complex operation device is added, so that a plurality of problems are brought, such as purchase cost, energy consumption and maintenance are brought, and the economic benefit is affected. The motor is provided with a speed reducer to drive the oil pump to work, and is limited by the principle and structure of the motor. The existing motors used on the pumping unit are all driven by the output power of a motor shaft to drive a working machine to do work, and the motor is limited to work with a speed reducer.

The friction force of the belt roller and the belt is basically kept close to the balance state, but the belt roller and the belt are driven by friction force, so that friction loss between the belt roller and the belt is not low, dynamic balance is realized, the friction force of the belt roller and the belt is changed along with the change of working conditions, the change of temperatures in different seasons and the like, and parameters of the balance weight are required to be adjusted frequently, so that normal operation of equipment is affected. Another problem is also more pronounced: the belt is also good, and after a period of time, the chain can be lengthened, if the space for adjusting the redundant length is not available, the stroke of the sucker rod can be shortened, and the recovery ratio of petroleum can be reduced. The traditional regulation is manual shutdown regulation, and the method is time-consuming and affects the recovery ratio. Thus, in order to solve the above problems, another idea is proposed: the roller and the motor are combined into a whole, so that a speed reducer, namely an external rotor driving roller special for the pumping unit, can be omitted; and further changes the structure of the working surface of the roller as a break to solve the above problems.

Disclosure of Invention

The invention aims to provide an external rotor driving roller special for an oil pumping unit, which solves the problems of more using equipment, high cost, complex maintenance, low efficiency, influence on recovery ratio and the like in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the special outer rotor driving roller for the oil pumping unit comprises a stator consisting of a coil 9, an iron core 10 and a roller shaft 1, and a rolling part consisting of a roller 12 and a permanent magnet 11, and is characterized in that: the drum shaft 1 passes through and is fixed by a shaft hole 17 of the iron core body 16, and the coil 9 and the iron core 10 are manufactured into windings; a threading sleeve 3 is sleeved on the spool shaft 1, a power wire 7 of a coil 9 penetrates through the threading sleeve 3 and is provided with a binding post 2, and an encoder 4 and a bearing 5 are arranged on the threading sleeve 3; the other side of the roller shaft 1 is provided with a bearing 5 and a brake 13, the two bearings 5 are respectively provided with an outer roller end cover 6, an outer roller 12 is arranged between the two outer roller end covers 6, and a permanent magnet 11 is fixed on the inner wall of the outer roller 12 by a fixing frame 8.

Preferably: the fixing frame 8 is in a strip shape, one surface of the fixing frame is fixed on the inner wall of the outer roller 12, the other surface of the fixing frame is provided with a transverse convex edge 15, and the cross section of the fixing frame is in a T shape.

Preferably: the round edge of the outer roller end cover 6 is provided with an inner convex ring edge 14, and the end parts of the outer roller end cover 6 and the outer roller 12 are movably connected by bolts.

Preferably: the outer drum 12 has a cylindrical shape, and the cylindrical surface is a flat arc surface.

Preferably: the cylindrical surface of the outer drum 12 is provided with regular strip-shaped projections 18.

Preferably: a sprocket 20 is mounted on the outer drum end cover 6 at one end of the outer drum 12, and the sprocket 20 is fixed to the outer drum end cover 6 through bolt holes 21.

Compared with the prior art, the invention has the beneficial effects that: the structure is simple, and no speed reducer exists; the operation is simplified, and the integrated control is performed by a computer host; the failure rate is low, and the maintenance cost is low.

Drawings

FIG. 1 is a schematic half-sectional view of the present invention;

FIG. 2 is a 2-fold enlarged view of the parts of the invention, such as the outer drum 12, the fixing frame 8, the permanent magnet 11, etc., taken along the plane A-A of FIG. 1.

Fig. 3 is a 2-time enlarged view of the A-A face coil 9, the iron core 10, etc. of fig. 1;

fig. 4 is a perspective view of the outer circumferential surface of the outer drum 12 provided with the strip-shaped protrusions 18;

FIG. 5 is a schematic view of the cylinder 12, etc. shown in FIG. 4, and the working condition of the adapting belt 19;

FIG. 6 is a schematic view of the outer drum end cover 6 at one end of the drum 12 with the sprocket 20 mounted thereon;

fig. 7 is a schematic diagram showing the positional relationship between the sprocket 20 and the bolt hole 21.

In the figure: 1-drum shaft, 2-terminal, 3-threading sleeve, 4-encoder, 5-bearing, 6-outer drum end cover, 7-power cord, 8-mount, 9-coil, 10-iron core, 11-permanent magnet, 12-drum, 13-stopper, 14-interior flange, 15-horizontal flange, 16-iron core body, 17-shaft hole, 18-bar protruding, 19-belt, 20-sprocket, 21-bolt hole.

In the drawings, except where explicitly indicated, there are no strict proportional relationships or correspondence relationships between other drawings, but schematic diagrams and schematic diagrams for explaining the principles of the present invention, and the relative positional relationships, and general shapes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 7 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments that may be obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "on … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, rotated, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-3, and fig. 4-7, the present invention provides a technical principle scheme and embodiments of related products derived from the principle for understanding the principle: the special outer rotor driving roller for the oil pumping unit comprises a stator consisting of a coil 9, an iron core 10 and a roller shaft 1, and a rotor part consisting of a roller 12 and a permanent magnet 11, and is characterized in that: the drum shaft 1 passes through and is fixed by a shaft hole 17 of the iron core body 16, and the coil 9 and the iron core 10 are manufactured into windings; a threading sleeve 3 is sleeved on the spool shaft 1, a power wire 7 of a coil 9 penetrates through the threading sleeve 3 and is provided with a binding post 2, and an encoder 4 and a bearing 5 are arranged on the threading sleeve 3; the other side of the roller shaft 1 is provided with a bearing 5 and a brake 13, the two bearings 5 are respectively provided with an outer roller end cover 6, an outer roller 12 is arranged between the two outer roller end covers 6, and a permanent magnet 11 is fixed on the inner wall of the outer roller 12 by a fixing frame 8.

The invention is used for the oil extraction field and needs to explain the principle. The special outer rotor driving roller for the pumping unit can be used as a power output source, so that the driving belt pulls the pumping rod, and the working principle of a motor is said first. In brief, the motor is composed of a stator and a rotor, after being electrified, the coil and the iron core can generate a magnetic field to be mutually exclusive with the magnetic force of the permanent magnet stator to generate driving force, the stator part is connected with a shell of the motor (the high-power motor is fixedly connected with a base), the rotor of the motor rotates, the stator and the rotor do relative rotation, a power output end of the rotor is a motor shaft, and the motor shaft is connected with a working machine to do work. In the field of brushless permanent magnet motors, if the rotor is fixed and the power line is led out, the original stator can be rotated around the rotor, namely the outer roller 12, in the invention, the outer roller 12 is actually an original stator with a regular shape, the roller shaft 1 is sleeved with the threading sleeve 3, the power line 7 of the coil 9 penetrates through the threading sleeve 3 and is provided with the binding post 2, so that all rotating parts (the bearing 5, the outer roller end cover 6 and the like) are arranged outside the threading sleeve 3, the wiring of the power line is not influenced, the technical problem of leading out the power line 7 is solved, and the interchange of the rotation functions of the stator and the rotor (the roller) of the brushless permanent magnet motor is realized. The invention uses 380V power electricity, realizes variable frequency control through integrated circuit and decoder programming, and completes the control of the rotation direction and frequency of the outer roller 12, which belongs to the molding technology in the electromechanical field.

Here, an example of use of such a motor in the field of electric vehicles is exemplified. The rear wheel of most two-wheeled electric vehicles is in a motor direct-drive working mode, a motor rotor and a motor shaft (in the traditional sense) are fixed with a frame, and a motor stator shell (in the traditional sense) is integrally connected with the rear wheel and the wheels, so that power output is realized.

The fixing frame 8 is in a strip shape, one surface of the fixing frame is fixed on the inner wall of the outer roller 12, the other surface of the fixing frame is provided with a transverse convex edge 15, and the cross section of the fixing frame is in a T shape. The fixing frame 8 is used for fixing and installing the permanent magnet 11, can be processed and installed by a component, and can be added with the outer roller 12 in an integrated machine, so that the existing machining technology and equipment are not difficult and are not repeated. The number and size of the holders 8 are referred to in such a motor design manual. The brake 13 acts as an automatic "brake" in the de-energized state.

The shape of the outer roller end cover 6 is like two opposite-buckling plates, an inner convex ring edge 14 is arranged at the round edge, the outer roller end cover 6 and the end part of the outer roller 12 are clamped at the inner edge of the end part of the outer roller 12 during installation, and the outer roller end cover 6 and the end part of the outer roller 12 are movably connected by bolts, so that the maintenance is convenient.

The outer roller 12 is cylindrical in shape, and the cylindrical surface is a flat arc surface, so that the belt is suitable for the existing tower type pumping unit belt. The cylindrical surface of the outer drum 12 is provided with regular strip-shaped protrusions 18, and the drum needs to use a belt with a corresponding shape, namely, the strip-shaped protrusions on one surface of the belt, so that the belt is free from slipping and has high transmission efficiency. A sprocket 20 can be mounted on the outer roller end cover 6 at one end of the outer roller 12, and the sprocket 20 is fixed on the outer roller end cover 6 through bolt holes 21, so that the function of the outer roller 12 can be further expanded by driving the pumping unit through the sprocket 20 and a chain.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The special outer rotor driving roller for the oil pumping unit comprises a stator consisting of a coil (9), an iron core (10) and a roller shaft (1), and a rolling part consisting of a roller (12) and a permanent magnet (11), and is characterized in that: the roller shaft (1) passes through and is fixed from a shaft hole (17) of the iron core body (16), and the coil (9) and the iron core (10) are made into a winding; a threading sleeve (3) is sleeved on the drum shaft (1), a power line (7) of a coil (9) penetrates through the threading sleeve (3) and is provided with a binding post (2), and an encoder (4) and a bearing (5) are arranged on the threading sleeve (3); the other side of the roller shaft (1) is provided with a bearing (5) and a brake (13), the two bearings (5) are respectively provided with an outer roller end cover (6), an outer roller (12) is arranged between the two outer roller end covers (6), and a permanent magnet (11) is fixed on the inner wall of the outer roller (12) by a fixing frame (8).

2. The special outer rotor driving roller for the pumping unit according to claim 1, wherein: the fixing frame (8) is strip-shaped, one surface of the fixing frame is fixed on the inner wall of the outer roller (12), the other surface of the fixing frame is provided with a transverse convex edge (15), and the cross section of the fixing frame is T-shaped.

3. The special outer rotor driving roller for the pumping unit according to claim 1, wherein: the round edge of the outer roller end cover (6) is provided with an inner convex ring edge (14), and the end parts of the outer roller end cover (6) and the outer roller (12) are movably connected by bolts.

4. The special outer rotor driving roller for the pumping unit according to claim 1, wherein: the outer roller (12) is cylindrical in shape, and the cylindrical surface is a flat arc-shaped surface.

5. The special outer rotor driving roller for the oil pumping unit according to claim 1 or 4, wherein: the cylindrical surface of the outer drum (12) is provided with regular strip-shaped protrusions (18).

6. The special outer rotor driving roller for the pumping unit according to claim 1, wherein: a sprocket (20) is mounted on an outer drum end cover (6) at one end of the outer drum (12), and the sprocket (20) is fixed on the outer drum end cover (6) through bolt holes (21).