CN111030375A

CN111030375A - Starting motor

Info

Publication number: CN111030375A
Application number: CN201911309174.5A
Authority: CN
Inventors: 许天贺
Original assignee: Wenzhou Yerun Electrical Machinery Co ltd
Current assignee: Hangzhou Chonghong Technology Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-04-17
Anticipated expiration: 2039-12-18
Also published as: CN111030375B

Abstract

The invention discloses a starting motor, which comprises a main motor, wherein: the motor also comprises an auxiliary motor which can be separated from or connected with the main motor according to requirements, and the main rotating shaft of the main motor and the auxiliary rotating shaft of the auxiliary motor are positioned on the same axis. When the motor is started, the main motor and the auxiliary motor can be selected to be started simultaneously in a connection mode according to requirements, and larger torque can be provided. After the device reaches high-speed operation, the main rotating shaft and the auxiliary rotating shaft which are connected with each other by the auxiliary motor and the main motor can be separated. When the main motor works alone, the current and energy loss are small. Therefore, the invention has the advantages of adjustable torque, energy saving, small coil load, basically no side interference, and capability of configuring power and volume as required.

Description

Starting motor

Technical Field

The invention relates to an electric motor, in particular to a starting motor.

Background

A typical motor is mainly composed of two parts: the stationary part is called the stator and the rotating part is called the rotor. In addition, the fan also comprises an end cover, a fan, a cover shell, a base, a junction box and the like. The stator serves both to generate the magnetic field and to mechanically support the motor. The stator of the motor consists of a stator core, a stator winding and a base. The stator winding is embedded in the stator core, and induced electromotive force is generated when current passes through the stator winding, so that electric energy conversion is realized. The function of the stand is mainly to fix and support the stator core. In the prior art, as disclosed in chinese utility model patent with publication number CN207134940U, a power-assisted starting motor control system is disclosed, which comprises a main motor and a starting power-assisted system, wherein the main motor comprises a motor housing, a main shaft, a rotor and a stator; the starting power-assisted system comprises a power-assisted speed reducing motor, a gear transmission mechanism and a power-assisted control mechanism, wherein an output shaft of the power-assisted speed reducing motor is connected with the main shaft through the gear transmission mechanism; the power assisting control mechanism comprises a controller and an encoder, the controller is connected with the encoder, the encoder is installed at the rear end of the spindle, the power assisting speed reducing motor is connected with a power supply through a power assisting motor switch, the main motor comprises a main motor switch connected with the power supply, and the power assisting motor switch and the main motor switch are both connected with the controller; this motor control system that helping hand was started provides extra power for the main shaft through helping hand control mechanism control helping hand gear motor, solves the pneumatic problem comparatively slowly of main part motor under the comparatively cold condition of weather, improves the start-up efficiency of main part motor, improves the life of motor, is worth wideling popularize.

Disclosure of Invention

The invention aims to provide a starting motor which is adjustable in torque, energy-saving, small in coil load, basically free of side interference and capable of configuring power and volume as required.

The technical scheme adopted by the invention for solving the technical problems is as follows: a starter motor comprising a main motor, wherein: the motor also comprises an auxiliary motor which can be separated from or connected with the main motor according to requirements, and the main rotating shaft of the main motor and the auxiliary rotating shaft of the auxiliary motor are positioned on the same axis. When the motor is started, the main motor and the auxiliary motor can be selected to be started simultaneously in a connection mode according to requirements, and larger torque can be provided. After the device reaches high-speed operation, the main rotating shaft and the auxiliary rotating shaft which are connected with each other by the auxiliary motor and the main motor can be separated. When the main motor works alone, the current and energy loss are small.

In order to optimize the technical scheme, the adopted measures further comprise: the end part of the auxiliary rotating shaft of the auxiliary motor is provided with a main inserting gear; the end part of the main rotating shaft of the main motor is provided with a secondary inserting gear; the main plug gear can be separated from or connected with the auxiliary plug gear under the control of the shifting fork. The shifting fork is adopted to shift the main inserting gear, and when the motor is started, the whole auxiliary rotor moves towards the auxiliary inserting gear of the main motor. On the contrary, after the motor enters the normal working condition, the shifting fork moves reversely to separate the main inserting gear and the auxiliary inserting gear from each other, so that the auxiliary motor is separated from the working condition and stops rotating. If the torque is increased when the main motor works, the shifting fork is used for shifting the main inserting gear to be in butt joint with the auxiliary inserting gear by the shifting fork in a mode that the auxiliary motor is larger than or equal to the rotating speed of the main motor. Because the single side of the butt joint teeth of the main plug gear and the auxiliary plug gear is provided with the inclined surface, when the auxiliary plug gear accelerates or the main plug gear decelerates, the shifting fork only needs to move slightly due to the existence of the inclined surface, and the main plug gear and the auxiliary plug gear can be separated from the connection working condition. And since the other side is vertical, the connection is not easily broken under acceleration. The side surface of the main inserting gear is provided with a convex shoulder; the shifting fork is positioned near the shoulder; a limiting locking piece is further arranged near the convex shoulder, and the locking piece can limit the switching between the states when the main inserting gear is in a separation state or a connection state; preferably, the shift fork is movable in an axial direction of the main plug gear and/or movable in a radial direction of the main plug gear. Can restrict main grafting gear at the connected state or break away from the state as required through the locking piece, and this simple structure, good reliability, it is also very convenient to repair. The structure of the shifting fork can be in a straight line shape, however, the complexity of the outer driving structure is increased, and the switching of the connection state or the disconnection state is completed by matching with the axial movement and the radial movement. This has the advantage that the locking mechanism can be omitted. The shifting fork is approximately Y-shaped, and a certain gap is reserved between the shifting fork and a convex shoulder of the main plugging gear. The shifting fork adopts the Y style of calligraphy structure can effectively reduce external control mechanism's volume, only needs a simple and easy electromagnet mechanism or gaseous, the control that the hydraulic pressure work end just can accomplish the shifting fork. The simple rod-shaped limiting locking piece is matched to complete work. The tail end of the main shell of the main motor is provided with a main motor cover; the main motor cover is connected with the auxiliary shell of the auxiliary motor. And on one hand, the repair and replacement are very convenient by adopting a sectional structure. On the other hand, the main motor and the auxiliary motor with different torque proportions can be allocated according to different torque requirements, and the cost is effectively controlled. The auxiliary shell is provided with a through hole, and the edge part of the through hole is provided with a guide groove which can slidably accommodate the handle part of the shifting fork part; the limiting locking piece part is positioned outside the auxiliary shell. The guide groove is used for stabilizing the working position of the shifting fork and preventing the through hole from being abraded violently. The limiting locking piece is partially exposed, and an air pump or electromagnetic control can be selected according to the configuration condition of the boundary of the use space, so that the application flexibility is improved. The auxiliary rotating shaft of the auxiliary motor is provided with a part with a length L and is positioned outside the auxiliary shell; a support frame is arranged in the auxiliary shell, and the support frame slidably clamps an auxiliary rotating shaft of the auxiliary motor, so that the moving length of an auxiliary rotor of the auxiliary motor and an auxiliary stator of the auxiliary motor is smaller than L. Under the above-mentioned position and length relation, the position of the sub motor is effectively limited to the no-fault area. The length of the auxiliary commutator of the auxiliary motor is less than that of the auxiliary brush frame group. The length range enables the limit position of the auxiliary motor under two different working conditions to still receive current drive. And a sliding bearing which can be in sliding fit with and accommodate the auxiliary rotating shaft of the auxiliary motor is fixed at the tail end of the auxiliary shell. According to the working environment, a rear cover can be arranged for dust prevention.

The invention also comprises an auxiliary motor which can be separated from or connected with the main motor according to requirements, and the main rotating shaft of the main motor and the auxiliary rotating shaft of the auxiliary motor are positioned on the same axis. When the motor is started, the main motor and the auxiliary motor can be selected to be started simultaneously in a connection mode according to requirements, and larger torque can be provided. After the device reaches high-speed operation, the main rotating shaft and the auxiliary rotating shaft which are connected with each other by the auxiliary motor and the main motor can be separated. When the main motor works alone, the current and energy loss are small. Therefore, the invention has the advantages of adjustable torque, energy saving, small coil load, basically no side interference, and capability of configuring power and volume as required.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a local operating state according to an embodiment of the present invention;

FIG. 3 is a schematic view of a configuration of a partial accessory according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

The reference numbers illustrate: the auxiliary brush holder comprises an auxiliary motor 1, an auxiliary rotor 11, an auxiliary stator 12, an auxiliary rotating shaft 13, an auxiliary brush holder group 14, an auxiliary commutator 15, an auxiliary shell 16, a guide groove 16a, a sliding bearing 16b, a main motor 2, a main rotor 21, a main stator 22, a main rotating shaft 23, a gear spring 23a, a spring clamping sleeve 23b, a gear head 23c, an oil-containing bearing 23d, an oil-containing bearing 23e, a manganese steel gasket 23f, a main brush holder group 24, a main commutator 25, a main shell 26, a front end cover 26a, a support frame 3, a main motor cover 4, a main plug gear 5, a slave plug gear 6, a shifting fork 7, a limiting locking piece 8 and a rear cover 9.

Example (b): with reference to fig. 1 to 3, the starting motor comprises a main motor 2, wherein: also comprises the following steps of (1) preparing,

the auxiliary motor 1 can be separated from or connected with the main motor 2 according to requirements, and the main rotating shaft 23 of the main motor 2 and the auxiliary rotating shaft 13 of the auxiliary motor 1 are in the same axis. When the motor is started, the main motor 2 and the auxiliary motor 1 can be selected to be started simultaneously in a connection mode according to requirements, and large torque can be provided. After the device reaches high-speed operation, the main rotating shaft 23 and the auxiliary rotating shaft 13 which are connected with the auxiliary motor 1 and the main motor 2 can be separated. When the main motor 2 works alone, the current and energy loss are small. The end part of an auxiliary rotating shaft 13 of the auxiliary motor 1 is provided with a main inserting gear 5; the end part of the main rotating shaft 23 of the main motor 2 is provided with a secondary inserting gear 6; the master bayonet gear 5 can be disconnected or connected with the slave bayonet gear 6 under the control of the shift fork 7. The shifting fork 7 is adopted to shift the main inserting gear 5, and when the motor is started, the whole auxiliary rotor 11 moves towards the auxiliary inserting gear 6 of the main motor 2. On the contrary, after the motor enters the normal working condition, the shifting fork 7 moves reversely to separate the main inserting gear 5 and the auxiliary inserting gear 6 from each other, so that the auxiliary motor 1 is separated from the working condition and stops rotating. If the torque is increased when the main motor 2 works, the auxiliary motor 1 is adopted to shift the shifting fork 7 to shift the main inserting gear 5 through the shifting fork 7 in a mode that the rotating speed is more than or equal to the rotating speed of the main motor 2, so that the main inserting gear 5 is in butt joint with the auxiliary inserting gear 6. Because the primary plug gear 5 and the secondary plug gear 6 have inclined surfaces on one side of the butt teeth, when the secondary plug gear 6 accelerates or the primary plug gear 5 decelerates, the shifting fork 7 only needs to move a little to cause the two to be separated from the connection working condition due to the inclined surfaces. And since the other side is vertical, the connection is not easily broken under acceleration. The side surface of the main inserting gear 5 is provided with a convex shoulder; the shifting fork 7 is positioned near the shoulder; a limiting locking piece 8 is further arranged near the convex shoulder, and the locking piece 8 can limit the switching between the states when the main plugging gear 5 is in a separation state or a connection state; preferably, the shift fork 7 is movable in the axial direction of the main plug gear 5 and/or movable in the radial direction of the main plug gear 5. The main inserting gear 5 can be limited in a connecting state or a disconnecting state as required through the locking piece 8, and the structure is simple, the reliability is good, and the repair is very convenient. The structure of the fork 7 can be a straight shape, however, the complexity of the outer driving structure is increased, and the switching of the connection state or the disconnection state is completed by matching with the axial and radial movement. This has the advantage that the locking mechanism can be omitted. The shifting fork 7 is approximately Y-shaped, and a certain gap is formed between the shifting fork and a shoulder of the main plug gear 5. The shifting fork 7 adopts a Y-shaped structure, so that the size of an external control mechanism can be effectively reduced, and the shifting fork 7 can be controlled only by a simple electromagnet mechanism or a gas and hydraulic working end. Work is completed by matching with a simple rod-shaped limiting locking piece 8. The tail end of the main shell 26 of the main motor 2 is provided with a main motor cover 4; the main motor cover 4 is connected to the sub-housing 16 of the sub-motor 1. And on one hand, the repair and replacement are very convenient by adopting a sectional structure. On the other hand, the main motor and the auxiliary motor with different torque proportions can be allocated according to different torque requirements, and the cost is effectively controlled. The sub-shell 16 is provided with a through hole, and the edge part of the through hole is provided with a guide groove 16a which can slidably accommodate the handle part of the shifting fork 7; the positive stop latch 8 is located partially outside the sub-housing 16. The guide groove 16a is for stabilizing the operating position of the shift fork 7 and preventing the through hole from being worn severely. The limiting locking piece 8 is partially exposed, and an air pump or electromagnetic control can be selected according to the configuration condition of the boundary of the use space, so that the application flexibility is improved. The auxiliary rotating shaft 13 of the auxiliary motor 1 has a part with a length L and is positioned outside the auxiliary shell 16; the sub-housing 16 has a support frame 3 therein, and the support frame 3 slidably clamps the sub-shaft 13 of the sub-motor 1, so that the length of the movement between the sub-rotor 11 of the sub-motor 1 and the sub-stator 12 of the sub-motor 1 is less than L. Under the above-described position and length relationship, the position of the sub-motor 1 is effectively limited to the no-fault region. The length of the auxiliary commutator 15 of the auxiliary motor 1 is smaller than that of the auxiliary brush holder group 14. This length range allows the secondary motor 1 to be driven by current at its extreme positions under two different operating conditions. A sliding bearing 16b capable of slidably fitting and accommodating the sub-rotary shaft 13 of the sub-motor 1 is fixed to the end of the sub-housing 16. According to the working environment, a rear cover 9 can be arranged for dust prevention.

While the invention has been described in connection with a preferred embodiment, it is not intended to limit the invention, and it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.

Claims

1. The starting motor comprises a main motor (2), and is characterized in that: also comprises the following steps of (1) preparing,

the auxiliary motor (1) can be separated from or connected with the main motor (2) as required, and the main rotating shaft (23) of the main motor (2) and the auxiliary rotating shaft (13) of the auxiliary motor (1) are positioned on the same axis.

2. The starter motor of claim 1, wherein: the end part of an auxiliary rotating shaft (13) of the auxiliary motor (1) is provided with a main inserting gear (5); the end part of a main rotating shaft (23) of the main motor (2) is provided with a secondary inserting gear (6); the main inserting gear (5) and the auxiliary inserting gear (6) can be separated or connected under the control of the shifting fork (7).

3. The starter motor of claim 2, wherein: the side surface of the main inserting gear (5) is provided with a convex shoulder; the shifting fork (7) is positioned near the shoulder; a limiting locking piece (8) is further arranged near the shoulder, and the locking piece (8) can limit the switching between the states when the main inserting gear (5) is in a disengaging state or a connecting state; preferably, the shift fork (7) is movable in the axial direction of the main plug gear (5) and/or in the radial direction of the main plug gear (5).

4. The starter motor of claim 3, wherein: the shifting fork (7) is approximately Y-shaped, and a certain gap is reserved between the shifting fork and a shoulder of the main plug-in gear (5).

5. The starter motor of claim 1, wherein: the tail end of a main shell (26) of the main motor (2) is provided with a main motor cover (4); the main motor cover (4) is connected with an auxiliary shell (16) of the auxiliary motor (1).

6. The starter motor of claim 5, wherein: the auxiliary shell (16) is provided with a through hole, and the edge part of the through hole is provided with a guide groove (16a) which can slidably accommodate the handle part of the shifting fork (7); the limiting locking piece (8) is partially positioned outside the auxiliary shell (16).

7. The starter motor of claim 1, wherein: the auxiliary rotating shaft (13) of the auxiliary motor (1) is provided with a part with a length L and is positioned outside the auxiliary shell (16); the auxiliary shell (16) is internally provided with a support frame (3), and the support frame (3) slidably clamps an auxiliary rotating shaft (13) of the auxiliary motor (1), so that the moving length of an auxiliary rotor (11) of the auxiliary motor (1) and an auxiliary stator (12) of the auxiliary motor (1) is less than L.

8. The starter motor of claim 1, wherein: the length of an auxiliary commutator (15) of the auxiliary motor (1) is smaller than that of the auxiliary brush holder group (14).

9. The starter motor of claim 5, wherein: the tail end of the auxiliary shell (16) is fixed with a sliding bearing (16b) which can accommodate the auxiliary rotating shaft (13) of the auxiliary motor (1) in a sliding fit mode.