Starting motor of agricultural machinery
By setting an annular sealing ring and a large window design in the starting motor of agricultural machinery, combined with a drainage hole, the problem of foreign matter entering is solved, ensuring the normal operation of the motor and improving reliability and durability.
Patent Information
- Application Number
- CN202423232449.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In the existing technology, the technology of agricultural starter motors cannot effectively solve the problem that the dust-proof structure of the one-way clutch cannot prevent foreign matter such as grass clippings and mud from entering during operation, causing the motor to become stuck or stuck, and the existing window design is difficult to effectively discharge foreign matter.
An annular sealing ring and a large window design are set inside the front cover, and O-rings and rubber sealing gaskets are set at multiple connections, combined with a drainage hole design to prevent foreign matter from entering and drain water in time.
It effectively prevents foreign matter from entering the motor, ensures the normal operation of the motor, avoids jamming and blocking, and improves the reliability and durability of the motor.
Smart Images
Figure CN223469362U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of starting motor, concretely relates to a starting motor of agricultural machinery. BACKGROUND
[0002] Referring to Figure 8 and Figure 9 , the existing starting motor of agricultural machinery comprises an electromagnetic switch and a motor, the motor is provided with a front end cover 3 at the front end, a one-way clutch is arranged in the front end cover 3, the one-way clutch and a gear 5 thereof are sleeved on a driving shaft 4 of the motor, a dust cover 13 is arranged on a hollow shaft of the one-way clutch, a window 6 for meshing the gear 5 with a flywheel of the engine is arranged on the front end cover 3, the dust cover 13 is fixed below the gear 5, a sealing ring 14 is further arranged below the dust cover 13, the sealing ring 14 is in interference fit in a stopper arranged on the inner wall of the front end cover 3, through the cooperation of the dust cover 13 and the sealing ring 14, the grass clippings, mud and other foreign matters 15 entering the inside of the front end cover 3 from the window 6 are prevented from entering the inside of the motor, thereby preventing the motor from being stuck or even dead. However, this structure can only prevent the grass clippings, mud and other foreign matters 15 from entering the inside of the motor when the starting motor is not working, and once the starting motor works, referring to Figure 9 , the electromagnetic switch drives the one-way clutch to move axially, the gear 5 meshes with the flywheel of the engine through the window 6, and since the one-way clutch moves axially, the dust cover 13 fixed on the hollow shaft of the one-way clutch also moves, so that the dust cover 13 is separated from the sealing ring 14, and the grass clippings, mud and other foreign matters 15 accumulated in the inside of the front end cover 3 enter the inside of the motor along with Figure 9 the arrow direction, block the teeth of the one-way clutch, cause the motor to be stuck, affect the output of the motor, and even cause the motor to be dead. Moreover, in the prior art, the window 6 arranged on the front end cover 3 is very small, and only when the starting motor works, the gear 5 is exposed in the window 6 through the axial movement of the one-way clutch, and the window 6 is just enough for the gear 5 to mesh with the flywheel, and when the starting motor is not working, the gear 5 is retracted below the window 6. Although this small window structure can reduce the grass clippings, mud and other foreign matters 15 entering the front end cover 3, once the grass clippings, mud and other foreign matters 15 enter the front end cover 3, it is difficult to discharge them, so that the grass clippings, mud and other foreign matters 15 are continuously accumulated in the inside of the front end cover 3, thereby affecting the normal work of the starting motor. SUMMARY
[0003] The utility model provides a starting motor of agricultural machinery in view of the above problems, which blocks the grass clippings, mud and other foreign matters entering the front end cover through the arrangement of the annular sealing ring, and prevents the grass clippings, mud and other foreign matters from entering the inside of the motor.
[0004] The utility model discloses a technical scheme for a starting motor of agricultural machinery, which comprises a motor shell, a front end cover, a rear end cover and an electromagnetic switch. A drive shaft is connected to a motor rotor shaft in the motor shell. A one-way clutch is fixed on the drive shaft and arranged in the front end cover. A gear is fixed on a hollow shaft at one end of the one-way clutch. The front end cover is provided with a window for engaging the gear with a flywheel of an engine. An elastic sealing ring is arranged in the front end cover and located between the one-way clutch and the window to seal the one-way clutch in the front end cover.
[0005] Preferably, the opening length of the window in the axial direction is equal to or greater than the distance of axial movement of the gear.
[0006] Preferably, the inner wall of the front end cover is provided with an annular stopper, and the elastic sealing ring is interference-fitted in the annular stopper.
[0007] Preferably, the front end cover is provided with a first drainage hole.
[0008] Preferably, the bottom surface of the rear end cover is inclined, and the second drainage hole is arranged at the intersection of the lowest point of the bottom surface and the side wall, so that the position of the second drainage hole is always at the lowest position when the motor is installed horizontally or vertically.
[0009] Preferably, the second drainage hole is provided with a baffle at the opening of one end connected to the inside of the motor.
[0010] Preferably, the inclination angle of the bottom surface is 3-5°.
[0011] Preferably, the connection between the stator in the motor shell and the front end cover is provided with a first O-shaped sealing ring, and the connection between the stator in the motor shell and the rear end cover is provided with a second O-shaped sealing ring.
[0012] Preferably, the connection between the electromagnetic switch and the front end cover is provided with a rubber sealing gasket.
[0013] The utility model has the advantages that:
[0014] 1. The annular sealing ring is arranged on the hollow shaft of the one-way clutch, and the annular stopper is arranged on the inner wall of the front end cover, so that the annular sealing ring does not move with the hollow shaft of the one-way clutch, and the annular sealing ring always blocks foreign matters such as grass clippings and mud outside, ensuring the normal operation of the starting motor.
[0015] 2. The window arranged on the front end cover is larger, which is conducive to discharging foreign matters such as grass clippings and mud into the front end cover.
[0016] 3. The O-shaped sealing rings or rubber sealing gaskets are arranged at multiple connection parts to prevent water from entering the inside of the starting motor and ensure the normal operation of the starting motor.
[0017] 4. The front end cover and the rear end cover are provided with drainage holes, water entering the starting motor can be discharged in time, and normal work of the starting motor is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a structural schematic view of the utility model;
[0019] Figure 2 is a sectional view of the utility model;
[0020] Figure 3 is a front end cover local schematic view of the utility model;
[0021] Figure 4 is a front end cover sectional schematic view of the utility model when the starting motor is not working;
[0022] Figure 5 is a front end cover sectional schematic view of the utility model when the starting motor is working;
[0023] Figure 6 is a rear end cover inner side structure schematic view of the utility model;
[0024] Figure 7 is a rear end cover outer side structure schematic view of the utility model;
[0025] Figure 8 is a prior art front end cover sectional schematic view when the starting motor is not working;
[0026] Figure 9 is a prior art front end cover sectional schematic view when the starting motor is working. DETAILED DESCRIPTION
[0027] Reference Figures 1 to 7The utility model provides a starting motor of agricultural machinery, including motor shell 1, front end cover 3, rear end cover 18 and electromagnetic switch 2, be equipped with first drain hole 9 on the front end cover 3, when water flow enters the front end cover 3, can pass through first drain hole 9 and exports it. To guarantee that water flow can normally export under the vertical installation condition of motor, the bottom surface 181 of rear end cover 18 is inclined plane, the junction of the lowest point of bottom surface 181 and lateral wall 182 is equipped with second drain hole 19, bottom surface 181 is inclined 3 to the direction of second drain hole 19, make the position of this second drain hole 19 always be in the lowest position when motor horizontal installation or vertical installation, guarantee whether motor horizontal installation or vertical installation, when water flow enters the inside of motor, water flow will certainly flow to second drain hole 19, and exports water flow through second drain hole 19. The orifice of one end of second drain hole 19 with the inside communication of motor is equipped with a baffle 20 to ensure that external water flow cannot directly enter the inside of motor. The motor rotor shaft in motor shell 1 is connected with a driving shaft 4, a one-way clutch 16 arranged in the front end cover 3 is fixed on the driving shaft 4, a gear 5 is fixed on the hollow shaft 17 of one end of the one-way clutch 16 in the circumferential direction, the front end cover 3 is provided with a window 6 for the gear 5 to engage with the engine flywheel, the opening length of the window 6 in the axial direction is equal to or greater than the axial movement distance of the gear 5, to ensure that the gear 4 is always exposed in the window 6. The structure of the large window avoids the accumulation of foreign matters such as grass clippings and mud in the inside of the front end cover 3. An elastic sealing ring 7 is arranged in the front end cover 3, the elastic sealing ring 7 is located between the one-way clutch 16 and the window 6, and the one-way clutch 16 is sealed in the front end cover 3. An annular stop 8 is arranged on the inner wall of the front end cover 3, and the elastic sealing ring 7 is interference-fitted in the annular stop 8, to block the foreign matters such as grass clippings and mud entering the front end cover 3 from the outside when the hollow shaft 17 moves axially. First O-shaped sealing rings 10 are arranged at the connection between the stator in the motor shell 1 and the front end cover 3, second O-shaped sealing rings 11 are arranged at the connection between the stator in the motor shell 1 and the rear end cover 18, and rubber sealing pads 12 are arranged at the connection between the electromagnetic switch 2 and the front end cover 3. By arranging the first O-shaped sealing rings 10, the second O-shaped sealing rings 11 and the rubber sealing pads 12, water flow is prevented from entering the inside of the motor from the connection parts of the starting motor.
[0028] The above description is only preferred embodiments of the utility model, and is not used for limiting the utility model, and the person skilled in the art makes the change to the utility model without departing from the spirit of the utility model, and all fall within the protection scope of the utility model.
Claims
1. A starting motor for agricultural machinery, comprising a motor housing (1), a front end cover (3), a rear end cover (18), and an electromagnetic switch (2), wherein a motor rotor shaft in the motor housing (1) is connected to a drive shaft (4), a one-way clutch (16) disposed in the front end cover (3) is fixed to the drive shaft (4), a gear (5) is fixed circumferentially on a hollow shaft (17) at one end of the one-way clutch (16), and the front end cover (3) is provided with a window (6) for engaging the gear (5) with an engine flywheel, characterized in that: The front end cover (3) is provided with an elastic sealing ring (7) inside, the elastic sealing ring (7) is located between the one-way clutch (16) and the window (6), and the one-way clutch (16) is sealed in the front end cover (3).
2. The starting motor of an agricultural machine according to claim 1, characterized by: The window (6) is provided with an opening in the axial direction, and the opening length is equal to or greater than the axial movement distance of the gear (5).
3. The starting motor of an agricultural machine according to claim 1, characterized by: The inner wall of the front end cover (3) is provided with an annular stop (8), and the elastic sealing ring (7) is interference-fitted in the annular stop (8).
4. The starting motor of an agricultural machine according to claim 1, characterized by: The front end cover (3) is provided with a first drainage hole (9).
5. The starting motor of an agricultural machine according to claim 1, characterized by: The bottom surface (181) of the rear end cover (18) is inclined, and the second drainage hole (19) is arranged at the intersection between the lowest point of the bottom surface (181) and the side wall (182), so that the position of the second drainage hole (19) is always at the lowest position when the motor is horizontally installed or vertically installed.
6. The starting motor of an agricultural machine according to claim 5, characterized by: The second drainage hole (19) is provided with a baffle (20) at the opening of the end connected to the inside of the motor.
7. The starting motor of an agricultural machine according to claim 5, characterized by: The inclination angle of the bottom surface (181) is 3-5°.
8. The starting motor of an agricultural machine according to claim 1, characterized by: The connection between the stator in the motor shell (1) and the front end cover (3) is provided with a first O-shaped sealing ring (10), and the connection between the stator in the motor shell (1) and the rear end cover (18) is provided with a second O-shaped sealing ring (11).
9. The starting motor of an agricultural machine according to claim 1, characterized by: The connection between the electromagnetic switch (2) and the front end cover (3) is provided with a rubber sealing gasket (12).