阅读说明：本技术 一种油田用电动机 (Motor for oil field ) 是由 丛日东 杨凤凯 姚炳龙 孙庆伟 周敏杰 于国江 李晶 张化庆 郭英健 于 2019-09-25 设计创作，主要内容包括：本发明涉及电动机技术领域,且公开了一种一种油田用电动机,包括电动机本体,所述电动机本体的输出轴上固定套接有集电环,所述集电环的表面滑动安装有碳刷,电动机本体的机壳上开设有通孔,通孔的内部插接有活塞筒。本油田用电动机,通过设置活塞筒、第一活塞、圆筒、铁芯、线圈和永磁铁,随着碳刷的磨损,压紧弹簧的不断释放后造成碳刷与集电环之间的压力减小时,利用电磁铁与永磁铁相互吸引,电磁铁与永磁铁相互靠近时,随着距离的缩短,相互之间的吸引力会增大,以此补足压紧弹簧因释放长度过长造成碳刷与集电环之间的压力不足,保持碳刷集电环之间的压力均衡,使得碳刷与集电环保持良好的接触,以此增加电动机的使用寿命。(The invention relates to the technical field of motors and discloses an oil field motor which comprises a motor body, wherein a collecting ring is fixedly sleeved on an output shaft of the motor body, a carbon brush is slidably mounted on the surface of the collecting ring, a through hole is formed in a shell of the motor body, and a piston cylinder is inserted into the through hole. This motor for oil field, through setting up a piston section of thick bamboo, first piston, the drum, the iron core, coil and permanent magnet, along with the wearing and tearing of carbon brush, when the continuous release of hold-down spring caused the pressure between carbon brush and the collecting ring to reduce, utilize electro-magnet and permanent magnet inter attraction, when electro-magnet and permanent magnet were close to each other, along with the shortening of distance, mutual appeal can increase, thereby complement hold-down spring and cause the pressure between carbon brush and the collecting ring not enough because of release length overlength, keep the pressure balance between the carbon brush collecting ring, make carbon brush and collecting ring keep good contact, with this life who increases the motor.)

1. The utility model provides an electric motor for oil field, includes motor body (1), fixed cover on the output shaft of motor body (1) has connect collecting ring (2), the surface slidable mounting of collecting ring (2) has carbon brush (3), its characterized in that: the motor is characterized in that a through hole (4) is formed in a shell of the motor body (1), a piston cylinder (5) is inserted into the through hole (4), a first piston (6) is installed on the inner wall of the piston cylinder (5) in a sliding mode, a carbon brush rod (7) is fixedly installed on the side face of the first piston (6), a carbon brush holder (8) is fixedly installed at one end, far away from the first piston (6), of the carbon brush rod (7), a carbon brush (3) is fixedly installed in the carbon brush holder (8), a cylinder (9) is communicated with the top of the piston cylinder (5), the surface of the cylinder (9) is in contact with the shell of the motor body (1), a second piston (10) is installed on the inner wall of the cylinder (9) in a sliding mode, a compression spring (11) is fixedly installed on the upper surface of the second piston (10), and the other end of the compression spring (11) is fixed with the inner wall of the cylinder (, the motor is characterized in that a partition plate (12) is fixedly mounted on the inner wall of the cylinder (9), the joint of the piston cylinder (5) and the cylinder (9) is located between the second piston (10) and the partition plate (12), an iron core (13) is fixedly mounted below the partition plate (12) on the inner wall of the cylinder (9), a coil (14) is wound on the surface of the iron core (13), two ends of the coil (14) penetrate through the cylinder (9) and are fixed with two ends of a sliding rheostat (15), the sliding rheostat (15) is fixedly mounted on a shell of the motor body (1), and a permanent magnet (16) is fixedly mounted on the lower surface of the second piston (10).

2. The oilfield motor of claim 1, wherein: the surface of the cylinder (9) is provided with a fixed pressing sheet (17), and the fixed pressing sheet (17) is fixed with the shell of the motor body (1) through screws.

3. The oilfield motor of claim 1, wherein: the cylinder (9) is composed of a shell (901) and a magnetic resisting layer (902), the magnetic resisting layer (902) is positioned inside the shell (901), and the magnetic resisting layer (902) is made of a high saturation permeability material with the permeability of 80000-120000.

4. The oilfield motor of claim 1, wherein: the coil (14) and the iron core (13) form an electromagnet after being electrified, and the electromagnet and the permanent magnet (16) are mutually attracted.

5. The oilfield motor of claim 1, wherein: the slide rheostat (15) is connected with the coil (14) in series.

6. The oilfield motor of claim 1, wherein: the interior of the piston cylinder (5) and the cylinder (9) is positioned between the first piston (6) and the second piston (10) and is filled with hydraulic oil.

Technical Field

The invention relates to the technical field of motors, in particular to a motor for an oil field.

Background

In oil field exploitation, an electric motor is the most common machine and provides power for various opening transportation equipment, a carbon brush is an important component of the electric motor, the shape of the carbon brush is generally a square block and is clamped on a metal support, a spring is arranged in the carbon brush to tightly press the carbon brush on a rotating shaft, and when the electric motor rotates, electric energy is transmitted to a coil through a phase changer, and the current electric motor carbon brush has the following problems:

1. Most of the existing carbon brushes only rely on the spring to provide pressing force, so that the carbon brushes are connected with the collecting ring under certain pressure, but the spring is continuously released along with the abrasion of the carbon brushes, and after the spring is compressed according to Hooke's law, the elasticity of the spring to the carbon brushes is reduced along with the increase of the release length of the spring in the release process, so that the surface of the carbon brushes and the collecting ring after the abrasion is poor in contact, and the use of the motor is influenced.

2. For example, the invention discloses a motor (publication number: CN208890529U) for oil field exploitation mechanical equipment, when a carbon brush is worn and shortened, a sealing piston I moves downwards under the elastic force of a compression spring and is communicated with two groups of L-shaped through holes, so that the contact pressure between the carbon brush and a collector ring is supplemented, and poor contact is prevented.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the oilfield motor which has the advantage of pressure balance between the carbon brush and the collecting ring along with the abrasion of the carbon brush, and solves the problem that the pressure between the carbon brush and the collecting ring is changed to influence the use of the motor in the use process of the carbon brush.

(II) technical scheme

in order to achieve the purpose, the invention provides the following technical scheme: an oil field motor comprises a motor body, wherein a collecting ring is fixedly sleeved on an output shaft of the motor body, a carbon brush is slidably mounted on the surface of the collecting ring, a through hole is formed in a casing of the motor body, a piston cylinder is inserted in the through hole, a first piston is slidably mounted on the inner wall of the piston cylinder, a carbon brush rod is fixedly mounted on the side surface of the first piston, a carbon brush holder is fixedly mounted at one end, away from the first piston, of the carbon brush rod, the carbon brush is fixedly mounted in the carbon brush holder, the top of the piston cylinder is communicated with a cylinder, the surface of the cylinder is in contact with the casing of the motor body, a second piston is slidably mounted on the inner wall of the cylinder, a compression spring is fixedly mounted on the upper surface of the second piston, the other end of the compression spring is fixed with the inner wall of the cylinder, and a partition plate is fixedly mounted on the inner wall, and the joint of the piston cylinder and the cylinder is positioned between the second piston and the partition plate, an iron core is fixedly installed on the inner wall of the cylinder below the partition plate, a coil is wound on the surface of the iron core, two ends of the coil penetrate through the cylinder and are fixed with two ends of the sliding rheostat, the sliding rheostat is fixedly installed on a shell of the motor body, and a permanent magnet is fixedly installed on the lower surface of the second piston.

Preferably, the surface of the cylinder is provided with a fixed pressing sheet, and the fixed pressing sheet is fixed with the shell of the motor body through screws.

Preferably, the cylinder consists of a shell and a magnetic resisting layer, the magnetic resisting layer is positioned inside the shell, and the magnetic resisting layer is made of a high saturation permeability material with the permeability of 80000-120000.

Preferably, the coil forms an electromagnet with the iron core after being electrified, and the electromagnet and the permanent magnet attract each other.

Preferably, the sliding varistor is connected in series with the coil.

preferably, the interior of the piston cylinder and the cylinder between the first piston and the second piston is filled with hydraulic oil.

(III) advantageous effects

The invention provides an electric motor for an oil field, which has the following beneficial effects:

(1) This motor for oil field, through setting up a piston section of thick bamboo, first piston, the drum, the iron core, coil and permanent magnet, along with the wearing and tearing of carbon brush, when the continuous release of pressure spring caused the pressure between carbon brush and the collecting ring to reduce, utilize electro-magnet and permanent magnet inter attraction, when electro-magnet and permanent magnet are close to each other, along with the shortening of distance, appeal can increase each other, it is not enough because of the release length overlength causes the pressure between carbon brush and the collecting ring to supply pressure spring, keep the pressure equilibrium between the carbon brush collecting ring, make carbon brush and collecting ring keep good contact, with this life who increases the motor.

(2) This motor for oil field, through using the volume change to receive the less hydraulic oil of influence of temperature to transmit, reduce the influence that the temperature caused to the pressure between carbon brush and the collecting ring, prevent that the inside temperature of motor is higher, gaseous expend with heat and contract with cold nature is big, has increaseed the pressure between carbon brush and the collecting ring, has accelerated the wearing and tearing of carbon brush, reduces the life of carbon brush.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is a front cross-sectional view of a piston cylinder of the present invention;

FIG. 3 is a side view of a motor body of the present invention construction;

FIG. 4 is a circuit diagram of the present invention.

In the figure: the motor comprises a motor body 1, collector rings 2, carbon brushes 3, through holes 4, a piston cylinder 5, a first piston 6, a brush rod 7, a brush holder 8, a cylinder 9, a 901 shell, a magnetic resisting layer 902, a second piston 10, a compression spring 11, a partition plate 12, an iron core 13, a coil 14, a slide rheostat 15, a permanent magnet 16 and a fixed pressing sheet 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: an oil field motor comprises a motor body 1, a collecting ring 2 is fixedly sleeved on an output shaft of the motor body 1, a carbon brush 3 is slidably mounted on the surface of the collecting ring 2, a through hole 4 is formed in a casing of the motor body 1, a piston cylinder 5 is inserted into the through hole 4, a first piston 6 is slidably mounted on the inner wall of the piston cylinder 5, a carbon brush rod 7 is fixedly mounted on the side surface of the first piston 6, a carbon brush holder 8 is fixedly mounted at one end, far away from the first piston 6, of the carbon brush rod 7, the carbon brush 3 is fixedly mounted in the carbon brush holder 8, a cylinder 9 is communicated with the top of the piston cylinder 5, the surface of the cylinder 9 is in contact with the casing of the motor body 1, a second piston 10 is slidably mounted on the inner wall of the cylinder 9, a compression spring 11 is fixedly mounted on the upper surface of the second piston 10, the other end of the compression spring 11 is fixed with the inner wall of the cylinder 9, and the joint of the piston cylinder 5 and the cylinder 9 is positioned between the second piston 10 and the partition plate 12, the inner wall of the cylinder 9 is positioned below the partition plate 12 and is fixedly provided with an iron core 13, the surface of the iron core 13 is wound with a coil 14, two ends of the coil 14 penetrate through the cylinder 9 and are fixed with two ends of a slide rheostat 15, the slide rheostat 15 is fixedly arranged on the shell of the motor body 1, and the lower surface of the second piston 10 is fixedly provided with a permanent magnet 16.

Wherein, the surface of the cylinder 9 is provided with a fixed pressing sheet 17, the fixed pressing sheet 17 is fixed with the shell of the motor body 1 through screws, when the carbon brush 3 needs to be replaced, the screws on the fixed pressing sheet 17 are unscrewed, the cylinder 9 can be taken out from the inside of the through hole 4, the carbon brush 3 is replaced, and after the replacement is finished, the screws are inserted from the position of the through hole 4 and screwed.

the cylinder 9 is composed of a casing 901 and a magnetic blocking layer 902, the magnetic blocking layer 902 is located inside the casing 901, the magnetic blocking layer 902 is made of a high saturation permeability material with permeability of 80000-120000, and the magnetic blocking layer 902 is arranged to prevent the permanent magnet 16 from attracting the housing of the motor body 1 or an external object, and reduce influence on movement of the second piston 10 caused by attraction between the permanent magnet 16 and the housing of the motor body 1 or the external object.

When the coil 14 is electrified, the compression spring 11 is continuously released along with the abrasion of the carbon brush 3, the elasticity of the compression spring 11 to the carbon brush 3 is reduced along with the increase of the release length of the compression spring 11, but because the electromagnet and the permanent magnet 16 are mutually attracted, and when the electromagnet and the permanent magnet 16 are close to each other, the attraction force between the electromagnet and the permanent magnet is increased along with the decrease of the distance, so that the insufficient pressure between the carbon brush 3 and the collecting ring 2 caused by the overlong release length of the compression spring 11 is compensated.

The slide rheostat 15 is connected in series with the coil 14, and the current in the coil 14 is adjusted by adjusting the slide rheostat 15, so that the purpose of changing the magnetic force of the electromagnet is achieved.

The piston cylinder 5 and the cylinder 9 are filled with hydraulic oil between the first piston 6 and the second piston 10, the hydraulic oil can play a role in transmission, and compared with filling gas, the volume change of the hydraulic oil is less affected by temperature, and pressure balance between the carbon brush 3 and the collecting ring 2 can be better maintained.

The working principle is as follows: along with the abrasion of the carbon brush 3, the compression spring 11 is continuously released, the elasticity of the compression spring 11 to the carbon brush 3 is reduced along with the increase of the release length of the compression spring 11, the coil 14 is electrified, the electromagnet and the permanent magnet 16 are mutually attracted, and when the electromagnet and the permanent magnet 16 are close to each other, the attraction force between the electromagnet and the permanent magnet is increased along with the reduction of the distance, so that the insufficient pressure between the carbon brush 3 and the collecting ring 2 caused by the overlong release length of the compression spring 11 is complemented, the pressure balance between the carbon brush 3 and the collecting ring 2 is kept, meanwhile, the transmission is carried out by adopting hydraulic oil with the volume change and small influence of the temperature, and the influence of the temperature on the pressure between the carbon brush 3.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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