A new type of double-sided permanent magnet synchronous motor output shaft

Abstract

The utility model discloses a novel double-side shaft permanent magnet synchronous motor output shaft, wherein the output shaft is sequentially provided with five sections from left to right, namely a left power docking section, a left support section, a main body section, a right support section and a right power docking section, a step portion formed by docking the left end of the main body section with the right end of the left support section is a left bearing abutment portion, and the left power docking section is arranged on the outside of the left end cover of the permanent magnet synchronous motor; a step portion formed by docking the right end of the right support section with the left end of the right power docking section is a right bearing abutment portion, and the right power docking section is arranged on the inside of the right end cover of the permanent magnet synchronous motor; the left end of the output shaft is a protruding structure, and the right end is an included structure, so that the structure is more compact; the left power docking section adopts a keyway transmission structure; the right power docking section adopts an internal spline sleeve structure; the above transmission method makes it easy to install the output shaft and the drive shaft, and the operation is simple and quick.

Description

Technical Field

[0001] The utility model relates to the technical field of double-sided shaft permanent magnet synchronous motor shafts, in particular to a novel double-sided shaft permanent magnet synchronous motor output shaft. Background Art

[0002] Permanent magnet synchronous motors are increasingly widely used in the field of petroleum engineering technology due to their high efficiency, high power factor, small size, high speed, and light weight. In the process of oil extraction, the oil pump is the most commonly used oil extraction equipment. Most of the oil pumps used in the prior art are beam pumps. Due to the limitations of their physical structure, this type of oil pump has problems such as low mechanical transmission efficiency, high power consumption, difficult mechanical maintenance, and high mechanical failure rate.

[0003] At present, the output shaft structure of the permanent magnet motor used in the oil pump drive device is generally a single-side shaft extension. This motor has only one power output end, and the power can only be transmitted on one side of the motor and the drum. Since the motor and the large drum are in a state of continuous heavy-load operation for a long time, the forces on both sides of the motor and the drum are very different, which leads to problems such as eccentric wear and easy damage to the bearings. In addition, in the double-reducer drive device of the oil pump, the motor needs to drive two planetary reducers on both sides, which requires the double-side shaft motor to have a more compact structure and be more convenient to install. Utility Model Content

[0004] The purpose of the utility model is to provide a new double-sided shaft permanent magnet synchronous motor output shaft, which can output power at both ends simultaneously, and at the same time has a compact structure and is simple and quick to install; the shaft end at one end is located inside the motor end cover and is an internal spline sleeve structure, and the other end is located outside the motor end cover and is a keyway structure.

[0005] The technical solution adopted by the utility model is:

[0006] A novel double-sided shaft permanent magnet synchronous motor output shaft, the output shaft is provided with five sections from left to right, namely a left power docking section, a left support section, a main body section, a right support section and a right power docking section, the diameters of the main body section, the left support section and the left power docking section gradually decrease in sequence, a step portion formed by the docking of the left end of the main body section with the right end of the left support section is a left bearing abutment portion, and the left power docking section is arranged outside the left end cover of the permanent magnet synchronous motor; the diameter of the right support section is larger than the diameter of the main body section and the diameter of the right power docking section, a step portion formed by the docking of the right end of the right support section with the left end of the right power docking section is a right bearing abutment portion, and the right power docking section is arranged inside the right end cover of the permanent magnet synchronous motor.

[0007] The left power docking section adopts a keyway transmission structure.

[0008] The right power docking section adopts an internal spline sleeve structure, and the spline sleeve adopts an involute, rectangular or toothed internal spline.

[0009] The utility model is provided with five sections from left to right, namely, a left power docking section, a left support section, a main body section, a right support section and a right power docking section. An annular groove is formed between the left end face of the main body section and the left motor end cover, which is used to clamp the bearing at the left end, and further positioned by a positioning ring, to ensure that the output shaft will not be offset during operation. Similarly, an annular groove is formed between the right end face of the right support section and the inner side of the right motor end cover, which is used to clamp the bearing at the right end, and further positioned by a positioning ring. Furthermore, the left power docking section adopts a keyway transmission structure, the right power docking section adopts an internal spline sleeve structure, and the spline sleeve adopts an involute, rectangular or toothed internal spline. The above-mentioned transmission method is adopted, so that the output shaft and the drive shaft can be easily installed and the operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a cross-sectional view of the installation structure of the utility model. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, the output shaft of the utility model is provided with five sections from left to right, namely, the left power docking section 3, the left support section 2, the main body section 1, the right support section 4 and the right power docking section 5. The diameters of the main body section 1, the left support section 2 and the left power docking section 3 gradually decrease in sequence. The step formed by the docking of the left end of the main body section 1 and the right end of the left support section 2 is the left bearing abutment section. The left power docking section 3 is arranged outside the left end cover of the permanent magnet synchronous motor 8; the diameter of the right support section is larger than the diameter of the main body section 1 and the diameter of the right power docking section 5. The step formed by the docking of the right end of the right support section and the left end of the right power docking section 5 is the right bearing abutment section. The right power docking section 5 is arranged inside the right end cover of the permanent magnet synchronous motor 8. The left end of the output shaft is a protruding structure, and the right end is an internal structure, which makes the structure more compact.

[0013] The left power docking section 3 adopts a keyway 7 transmission structure. The right power docking section 5 adopts an internal spline sleeve 6 structure, and the spline sleeve 6 adopts an involute, rectangular or toothed internal spline. The above transmission method makes it easy to install the output shaft and the drive shaft, and the operation is simple and fast.

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 and Figure 2 As shown, the output shaft is arranged at the center of the motor 8, and positioning holes located on the same horizontal line are arranged on the left motor end cover 8-1 and the right motor end cover 8-2 of the motor 8, and positioning rings 9 are arranged on the inner and outer edges of the positioning holes, respectively. The positioning rings 9 are used to clamp against one side end face of the corresponding bearing 10, and the other side end face of the bearing 10 is aligned with the corresponding left end face of the main section 1 and the right end face of the right support section. In fact, an annular groove is formed between the left end face of the main section 1 and the left motor end cover 8-1, which is used to clamp the bearing 10 at the left end, and then further positioned by the positioning ring 9, to ensure that the output shaft will not be offset during operation. Similarly, an annular groove is formed between the right end face of the right support section and the inner side of the right motor end cover 8-2, which is used to clamp the bearing 10 at the right end, and then further positioned by the positioning ring 9.

[0016] In addition, the left power docking section 3 adopts a keyway 7 transmission structure and the right power docking section 5 adopts an internal spline sleeve 6 structure as a transmission method, and then matches the reduction boxes on the left and right sides of the docking, ensuring that the device is easy to install and easy and quick to operate.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A novel double-sided permanent magnet synchronous motor output shaft, characterized in that: The output shaft is provided with five sections from left to right, namely a left power docking section, a left support section, a main body section, a right support section and a right power docking section. The diameters of the main body section, the left support section and the left power docking section gradually decrease in sequence. The step portion formed by the docking of the left end of the main body section with the right end of the left support section is the left bearing abutment portion, and the left power docking section is arranged on the outside of the left end cover of the permanent magnet synchronous motor; the diameter of the right support section is larger than the diameter of the main body section and the diameter of the right power docking section. The step portion formed by the docking of the right end of the right support section with the left end of the right power docking section is the right bearing abutment portion, and the right power docking section is arranged on the inside of the right end cover of the permanent magnet synchronous motor.

2. The novel double-sided permanent magnet synchronous motor output shaft according to claim 1 is characterized in that: The left power docking section adopts a keyway transmission structure.

3. The novel double-sided permanent magnet synchronous motor output shaft according to claim 2 is characterized in that: The right power docking section adopts an internal spline sleeve structure, and the spline sleeve adopts an involute, rectangular or tooth-shaped internal spline.

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