Alternating current starting motor
By designing the drive shaft, gears, and actuation mechanism of the AC starter motor, the problem of easy damage to the DC starter motor was solved, achieving low-current starting and high reliability, reducing the failure rate and economic losses, and meeting the starting requirements of high-power internal combustion generator sets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGYING ZHAOQI MACHINERY CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing DC starter motors are prone to damage in high-power internal combustion generator sets. The instantaneous large current generated during the power conversion process has a significant impact on the electrical system, resulting in a high failure rate and economic losses.
An AC starter motor is used, and through the combined design of a drive shaft, gears, a one-way clutch assembly and a toggle mechanism, the toggle mechanism moves the one-way clutch assembly along the axial direction of the drive shaft, so that the gears move closer to or away from the flywheel, thereby achieving start and stop control.
It reduces the starting current requirement, extends the start-up time, lowers the failure rate, improves safety and reliability, and reduces economic losses for users.
Smart Images
Figure CN224149710U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of starting technology for high-power internal combustion generator sets, and in particular to an AC starter motor. Background Technology
[0002] Currently, internal combustion generator sets with power outputs ranging from 500-3000kW, fueled by natural gas, refining tail gas, biogas, coal mine gas, and diesel oil, commonly employ DC starter motors for starting. Their working principle involves converting alternating current (AC) to direct current (DC) powered by a battery to drive the motor, thus starting the generator set. However, the drawbacks of using DC starter motors include the limited energy storage capacity of the accompanying batteries, and the significant instantaneous current generated during the energy conversion process, which can severely impact the electrical system and potentially burn out the motor. This makes DC starter motors prone to damage, causing substantial economic losses and inconvenience for users. Utility Model Content
[0003] The purpose of this utility model is to provide an AC starter motor that has the advantages of reducing the failure rate, being safe and reliable in use, and meeting the starting requirements of generator sets under various on-site working conditions.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] This utility model provides an AC starter motor, including a housing, a drive shaft, gears, a one-way clutch assembly, and a toggle mechanism;
[0006] The drive shaft is rotatably engaged with the housing. The gear and the one-way clutch assembly are both sleeved on the outside of the drive shaft. The one-way clutch assembly is slidably engaged with the drive shaft along the axial direction of the drive shaft. The gear is rotatably engaged with the drive shaft. The gear extends into the clutch and is rotatably engaged with the one-way clutch assembly in one direction.
[0007] The actuating mechanism is mounted on the outside of the housing and connected to the one-way clutch assembly. The actuating mechanism is used to actuate the one-way clutch assembly along the axial direction of the drive shaft so that the one-way clutch assembly drives the gear to move closer to or away from the flywheel.
[0008] Furthermore, the actuating mechanism includes a shift fork, a reset member, and an electromagnetic switch. One end of the shift fork extends into the electromagnetic switch, and the other end is connected to the one-way clutch assembly. The reset member is disposed between the shift fork and the electromagnetic switch. The electromagnetic switch is used to drive the shift fork to move closer to the flywheel along the axial direction of the transmission shaft when energized. The reset member is used to drive the shift fork to move away from the flywheel along the axial direction of the transmission shaft when the electromagnetic switch is de-energized.
[0009] Furthermore, the reset member is disposed outside the electromagnetic switch, the shift fork is provided with a limiting boss, and the reset member is sleeved outside the shift fork and connected between the limiting boss and the outer shell of the electromagnetic switch.
[0010] Furthermore, the one-way clutch assembly has an annular groove recessed on its exterior, and the shift fork is engaged in the annular groove along the axial direction of the drive shaft.
[0011] Furthermore, the one-way clutch assembly includes a clutch housing, a half-clutch, a accumulator elastic element, and a sliding sleeve;
[0012] The clutch housing is sleeved on the outside of the drive shaft and connected to the actuation mechanism. The half clutch, the energy storage elastic element, and the sliding sleeve are all disposed between the clutch housing and the drive shaft.
[0013] The sliding sleeve is slidably engaged with the drive shaft along the axial direction of the drive shaft, and the sliding sleeve is connected to the clutch housing;
[0014] The half-clutch is sleeved on the outside of the sliding sleeve and threadedly engaged with the sliding sleeve. One end of the half-clutch is axially engaged with the gear in one direction, and the other end is clamped between the half-clutch housing and the energy storage elastic element.
[0015] Furthermore, the end of the half-clutch facing the gear has a first meshing tooth, and the end of the gear facing the half-clutch has a second meshing tooth that meshes with the first meshing tooth. The first meshing tooth is used to drive the second meshing tooth to rotate in one direction.
[0016] Furthermore, the clutch housing includes a first housing and a limiting plate. The first housing is connected to the actuating mechanism, and the limiting plate is detachably connected to one axial end of the first housing. The limiting plate is used to abut against a gear extending into the first housing to limit the axial position of the gear.
[0017] Furthermore, the energy-storing elastic element is a helical spring.
[0018] Furthermore, the outer casing includes a second housing and a third housing, wherein the second housing and the third housing are detachably connected to form a mounting cavity;
[0019] A first bearing is provided between the drive shaft and the second housing, and a second bearing is provided between the drive shaft and the third housing;
[0020] Both the one-way clutch assembly and the gear are disposed within the mounting cavity;
[0021] The actuating mechanism is mounted on the outside of the third housing, and the mounting cavity has an opening for the actuating mechanism to extend into.
[0022] Furthermore, a power input component for driving the drive shaft to rotate is connected to the drive shaft, and the power input component is located outside the housing.
[0023] The AC starter motor provided by this utility model can produce the following beneficial effects:
[0024] When using the aforementioned AC starter motor, the drive shaft rotates, driving the one-way clutch assembly to rotate. The one-way clutch assembly then drives the gear to rotate. Subsequently, the actuating mechanism moves the one-way clutch assembly axially along the drive shaft, causing the one-way clutch assembly to drive the gear closer to the flywheel. The gear then drives the flywheel to rotate, starting the generator set. When the generator set is operating normally, the actuating mechanism moves the one-way clutch assembly axially along the drive shaft, causing the one-way clutch assembly to drive the gear away from the flywheel, thus disengaging the gear from the flywheel.
[0025] Compared to existing technologies, the AC starter motor provided by this utility model does not require a large starting current. Compared to DC starter motors, it can extend the starting time, reduce the failure rate, and is safe and reliable to use, reducing the economic losses and troubles of users, and meeting the starting requirements of high-power internal combustion generator sets. Attached Figure Description
[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of an AC starter motor provided in an embodiment of the present utility model.
[0028] Icons: 1-Outer shell; 11-Second shell; 12-Third shell; 2-Drive shaft; 21-Power input component; 3-Gear; 4-One-way clutch assembly; 41-Clutch shell; 411-First shell; 412-Limit plate; 42-Half clutch; 43-Power storage elastic component; 44-Sliding sleeve; 5-Actuating mechanism; 51-Shift fork; 511-Limit boss; 52-Reset component; 53-Electromagnetic switch; 6-Flywheel; 7-First bearing; 8-Second bearing; 9-Spacer. Detailed Implementation
[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0033] This embodiment provides an AC starter motor, such as Figure 1 As shown, it includes a housing 1, a drive shaft 2, a gear 3, a one-way clutch assembly 4, and a toggle mechanism 5;
[0034] The drive shaft 2 is rotatably engaged with the housing 1. The gear 3 and the one-way clutch assembly 4 are both sleeved on the outside of the drive shaft 2. The one-way clutch assembly 4 is slidably engaged with the drive shaft 2 along the axial direction of the drive shaft 2. The gear 3 is rotatably engaged with the drive shaft 2. The gear 3 extends into the clutch and is rotatably engaged with the one-way clutch assembly 4 in one direction.
[0035] The actuating mechanism 5 is installed on the outside of the housing 1 and connected to the one-way clutch assembly 4. The actuating mechanism 5 is used to actuate the one-way clutch assembly 4 along the axial direction of the drive shaft 2 so that the one-way clutch assembly 4 drives the gear 3 to move closer to or away from the flywheel 6.
[0036] Reference Figure 1 The following explains the usage process of the aforementioned AC starter motor:
[0037] When using the aforementioned AC starter motor, the drive shaft 2 rotates. Because the one-way clutch assembly 4 slides along the axial direction of the drive shaft 2, the drive shaft 2 can drive the one-way clutch assembly 4 to rotate, which in turn drives the gear 3 to rotate. Subsequently, the actuating mechanism 5 moves the one-way clutch assembly 4 to the left along the axial direction of the drive shaft 2, causing the one-way clutch assembly 4 to drive the gear 3 closer to the flywheel 6. The gear 3 then drives the flywheel 6 to rotate, starting the generator set. When the generator set is operating normally, the actuating mechanism 5 moves the one-way clutch assembly 4 to the right along the axial direction of the drive shaft 2, causing the one-way clutch assembly 4 to drive the gear 3 away from the flywheel 6, thus disengaging the transmission between the gear 3 and the flywheel 6.
[0038] The AC starter motor provided in the above embodiments does not require a large starting current. Compared with the DC starter motor, it can extend the starting time, reduce the failure rate, and is safe and reliable to use, reducing the economic losses and troubles of users, and meeting the starting requirements of high-power internal combustion generator sets.
[0039] In alternative implementations, such as Figure 1 As shown, the actuating mechanism 5 includes a shift fork 51, a reset member 52, and an electromagnetic switch 53. One end of the shift fork 51 extends into the electromagnetic switch 53, and the other end is connected to the one-way clutch assembly 4. The reset member 52 is located between the shift fork 51 and the electromagnetic switch 53.
[0040] When using, such as Figure 1 As shown, when the electromagnetic switch 53 is energized, the magnetic force drives the shift fork 51 to move to the left along the axial direction of the transmission shaft 2. The shift fork 51 then drives the one-way clutch assembly 4 to move to the left, causing the gear 3 to mesh with the flywheel 6. After the generator set starts, the electromagnetic switch 53 is de-energized, and the reset component 52 drives the shift fork 51 to move to the right along the axial direction of the transmission shaft 2, causing the gear 3 to move away from the flywheel 6 and canceling the transmission between the gear 3 and the flywheel 6.
[0041] The aforementioned toggle mechanism 5 is easy for the user to operate; simply controlling the energization of the electromagnetic switch 53 is sufficient.
[0042] Specifically, the electromagnetic switch 53 includes a spiral tube and an iron core. When energized, the internal spiral tube is magnetized and attracts the internal iron core to move horizontally. When de-energized, the spiral tube cancels its attraction to the iron core. Since the shift fork 51 is connected to the iron core, the axial movement of the shift fork can be realized.
[0043] In alternative implementations, such as Figure 1As shown, to facilitate the installation of the reset component 52, the reset component 52 is disposed outside the electromagnetic switch 53. The shift fork 51 is provided with a limiting boss 511. The reset component 52 is sleeved on the outside of the shift fork 51 and connected between the limiting boss 511 and the outer shell 1 of the electromagnetic switch 53.
[0044] like Figure 1 As shown, when the shift fork 51 moves to the left under the action of magnetic force, the reset member 52 is stretched. When the electromagnetic switch 53 is de-energized, the magnetic force disappears, and the reset member 52 tends to return to its original state, thereby driving the shift fork 51 to move to the right, realizing the reciprocating movement of the shift fork 51.
[0045] Specifically, the reset member 52 can be a helical spring, one end of which is connected to the limiting boss 511, and the other end is connected to the housing 1 of the electromagnetic switch 53.
[0046] In an optional embodiment, the one-way clutch assembly 4 is provided with an annular groove on its exterior, and the shift fork 51 is engaged in the annular groove along the axial direction of the drive shaft 2, so that when the shift fork 51 moves along the axial direction of the drive shaft 2, it can synchronously drive the one-way clutch assembly 4 to move.
[0047] In alternative implementations, such as Figure 1 As shown, the one-way clutch assembly 4 includes a clutch housing 41, a half clutch 42, a accumulator elastic element 43, and a sliding sleeve 44. The clutch housing 41 is sleeved on the outside of the drive shaft 2 and connected to the actuating mechanism 5. The half clutch 42, the accumulator elastic element 43, and the sliding sleeve 44 are all disposed between the clutch housing 41 and the drive shaft 2. The sliding sleeve 44 slides along the axial direction of the drive shaft 2 and is connected to the clutch housing 41. The half clutch 42 is sleeved on the outside of the sliding sleeve 44 and threadedly engaged with the sliding sleeve 44. One end of the half clutch 42 rotates unidirectionally with the gear 3 along the axial direction of the drive shaft 2, and the other end is sandwiched between the accumulator elastic element 43 and the clutch housing 41.
[0048] The elastic element 43, under its own elastic force, presses the left end of the semi-clutch 42 against the end of the gear 3 that extends into the clutch housing 41, so that the semi-clutch 42 and the gear 3 remain engaged. In use, the drive shaft 2 drives the sliding sleeve 44 to rotate. Since the semi-clutch 42 is limited axially by the elastic element 43, it rotates with the sliding sleeve 44, and at the same time, the semi-clutch 42 drives the gear 3 to rotate.
[0049] When the generator set starts normally, the speed of the flywheel 6 increases and becomes faster than the speed of the drive shaft 2. Since the half clutch 42 and the gear 3 are engaged in one-way rotation, the speed of the gear 3 will not drive the half clutch 42 to rotate with it. The one-way clutch assembly 4 separates from the gear 3, so that the torque will not be transmitted to the drive shaft 2, thus protecting the AC starter motor.
[0050] Specifically, the drive shaft 2 has a groove in a direction parallel to its own axis, and the inner surface of the sliding sleeve 44 may have a key, which extends into the groove and slides in cooperation with the groove.
[0051] In an optional embodiment, the end of the half-clutch 42 facing the gear 3 has a first meshing tooth, and the end of the gear 3 facing the half-clutch 42 has a second meshing tooth that meshes with the first meshing tooth. The first meshing tooth is used to drive the second meshing tooth to rotate in one direction. That is, if the first meshing tooth can drive the second meshing tooth to rotate clockwise, then the first meshing tooth cannot drive the second meshing tooth to rotate counterclockwise, and vice versa.
[0052] In alternative implementations, such as Figure 1 As shown, to facilitate the installation of gear 3, clutch housing 41 includes a first housing 411 and a limiting plate 412. The first housing 411 is engaged with the actuating mechanism 5. The limiting plate 412 is detachably connected to one end of the first housing 411 in the axial direction. The limiting plate 412 is used to abut against the gear 3 that extends into the first housing 411 to limit the axial position of the gear 3.
[0053] When it is necessary to install gear 3, the connection between the limiting plate 412 and the first housing 411 can be removed first. After the end of gear 3 with the second meshing tooth is placed into the clutch housing 41, the limiting plate 412 can be connected to the first housing 411.
[0054] The limiting plate 412 can be an integral structure or a split structure. The limiting plate 412 can be connected to the first housing 411 by screws or other connecting brackets, or it can be snapped together.
[0055] In an optional embodiment, to facilitate the selection of the energy-storing elastic element 43, the energy-storing elastic element 43 is a helical spring.
[0056] In an optional embodiment, to facilitate the installation of the drive shaft 2, gear 3, and one-way clutch assembly 4, such as... Figure 1 As shown, the outer casing 1 includes a second casing 11 and a third casing 12, which are detachably connected to form a mounting cavity; a first bearing 7 is provided between the drive shaft 2 and the second casing 11, and a second bearing 8 is provided between the drive shaft 2 and the third casing 12; a one-way clutch assembly 4 and a gear 3 are both located in the mounting cavity; an actuating mechanism 5 is installed on the outside of the third casing 12, and the mounting cavity has an opening for the actuating mechanism 5 to extend into.
[0057] When installing the drive shaft 2, gear 3 and one-way clutch assembly 4, the connection between the second housing 11 and the third housing 12 can be removed first, so that the gear 3 and one-way clutch assembly 4 can be installed inside the housing 1.
[0058] The second housing 11 and the third housing 12 can be detachably connected by screws or other connectors.
[0059] Specifically, such as Figure 1 As shown, the second housing 11 may have an opening for the actuation mechanism 5 to extend into.
[0060] In alternative implementations, such as Figure 1 As shown, there are two second bearings 8, and a spacer 9 is provided between the two second bearings 8. The spacer 9, together with the transmission shaft 2 and the housing 1, realizes the axial positioning of the two second bearings 8.
[0061] In alternative implementations, such as Figure 1 As shown, a power input component 21 for driving the drive shaft 2 to rotate is connected to the drive shaft 2. The power input component 21 is located outside the housing 1 and is located at the end of the drive shaft 2 away from the flywheel 6. The power input component 21 is used to connect to an AC motor, and the AC motor transmits power to the power input component 21.
[0062] The power input component 21 can be a pulley, gear, or sprocket, etc., and the rotation of the drive shaft 2 is achieved by driving the power input component 21 to rotate.
[0063] The AC starter motor provided in the above embodiments has been tested and found to effectively reduce the failure rate, improve safety and reliability, increase starting efficiency, and is easy to promote in the market.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An alternating current start motor characterized by, It includes a housing (1), a drive shaft (2), a gear (3), a one-way clutch assembly (4), and a toggle mechanism (5); The drive shaft (2) is rotatably engaged with the housing (1). The gear (3) and the one-way clutch assembly (4) are both sleeved on the outside of the drive shaft (2). The one-way clutch assembly (4) is slidably engaged with the drive shaft (2) along the axial direction of the drive shaft (2). The gear (3) is rotatably engaged with the drive shaft (2). The gear (3) extends into the clutch and is unidirectionally engaged with the one-way clutch assembly (4). The actuating mechanism (5) is installed outside the housing (1) and connected to the one-way clutch assembly (4). The actuating mechanism (5) is used to actuate the one-way clutch assembly (4) along the axial direction of the drive shaft (2) so that the one-way clutch assembly (4) drives the gear (3) to move closer to or away from the flywheel (6).
2. The alternating current start motor of claim 1, wherein, The actuating mechanism (5) includes a shift fork (51), a reset member (52), and an electromagnetic switch (53). One end of the shift fork (51) extends into the electromagnetic switch (53), and the other end is connected to the one-way clutch assembly (4). The reset member (52) is located between the shift fork (51) and the electromagnetic switch (53). The electromagnetic switch (53) is used to drive the shift fork (51) to move closer to the flywheel (6) along the axial direction of the transmission shaft (2) when energized. The reset member (52) is used to drive the shift fork (51) to move away from the flywheel (6) along the axial direction of the transmission shaft (2) when the electromagnetic switch (53) is de-energized.
3. The alternating current start motor of claim 2 wherein, The reset member (52) is disposed outside the electromagnetic switch (53). The shift fork (51) is provided with a limiting boss (511). The reset member (52) is sleeved outside the shift fork (51) and connected between the limiting boss (511) and the outer shell (1) of the electromagnetic switch (53).
4. The alternating current start motor of claim 2 wherein, The one-way clutch assembly (4) has an annular groove recessed on its exterior, and the shift fork (51) is engaged in the annular groove along the axial direction of the drive shaft (2).
5. The alternating current start motor of claim 1, wherein, The one-way clutch assembly (4) includes a clutch housing (41), a half clutch (42), a power storage elastic element (43), and a sliding sleeve (44). The clutch housing (41) is sleeved on the outside of the drive shaft (2) and connected to the actuation mechanism (5). The half clutch (42), the energy storage elastic element (43) and the sliding sleeve (44) are all located between the clutch housing (41) and the drive shaft (2). The sliding sleeve (44) is slidably engaged with the transmission shaft (2) along the axial direction of the transmission shaft (2), and the sliding sleeve (44) is connected to the clutch housing (41); The half clutch (42) is sleeved on the outside of the sliding sleeve (44) and threadedly engaged with the sliding sleeve (44). One end of the half clutch (42) along the axial direction of the transmission shaft (2) is engaged with the gear (3) in a one-way rotational manner, and the other end is sandwiched between the energy storage elastic element (43) and the clutch housing (41).
6. The alternating current start motor of claim 5 wherein, The half-clutch (42) has a first meshing tooth at one end facing the gear (3), and the gear (3) has a second meshing tooth at one end facing the half-clutch (42) that meshes with the first meshing tooth. The first meshing tooth is used to drive the second meshing tooth to rotate in one direction.
7. The alternating current start motor of claim 5 wherein, The clutch housing (41) includes a first housing (411) and a limiting plate (412). The first housing (411) is connected to the actuating mechanism (5). The limiting plate (412) is detachably connected to one end of the first housing (411) in the axial direction. The limiting plate (412) is used to abut against the gear (3) extending into the first housing (411) to limit the axial position of the gear (3).
8. The alternating current start motor of claim 5 wherein, The energy-storing elastic element (43) is a helical spring.
9. The alternating current start motor of any one of claims 1-8, wherein, The outer casing (1) includes a second casing (11) and a third casing (12), wherein the second casing (11) and the third casing (12) are detachably connected to form a mounting cavity; A first bearing (7) is provided between the drive shaft (2) and the second housing (11), and a second bearing (8) is provided between the drive shaft (2) and the third housing (12). Both the one-way clutch assembly (4) and the gear (3) are located within the mounting cavity; The actuating mechanism (5) is mounted on the outside of the third housing (12), and the mounting cavity has an opening for the actuating mechanism (5) to extend into.
10. The AC starter motor according to any one of claims 1-8, characterized in that, The drive shaft (2) is connected to a power input component (21) for driving the drive shaft (2) to rotate, and the power input component (21) is located outside the housing (1).