CN109756068B - Mower comprising switch reluctance motor - Google Patents

Mower comprising switch reluctance motor Download PDF

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Publication number
CN109756068B
CN109756068B CN201811511841.3A CN201811511841A CN109756068B CN 109756068 B CN109756068 B CN 109756068B CN 201811511841 A CN201811511841 A CN 201811511841A CN 109756068 B CN109756068 B CN 109756068B
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China
Prior art keywords
motor
reluctance motor
switch reluctance
brake
driving wheel
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CN201811511841.3A
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CN109756068A (en
Inventor
高鹏
陈刚
邹斌
刘大军
张进
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Zhejiang YAT Electrical Appliance Co Ltd
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Zhejiang YAT Electrical Appliance Co Ltd
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Abstract

The invention relates to a mower comprising a switch reluctance motor, which comprises a machine shell, wherein a PCB controller, the switch reluctance motor and a cutter assembly are arranged in the machine shell, an integrated transmission mechanism integrating braking and speed reduction is arranged on the switch reluctance motor, the integrated transmission mechanism comprises a rotating shaft fixedly connected with an output shaft of the switch reluctance motor, a driving wheel arranged on the rotating shaft, a driven wheel assembly driven by the driving wheel, and a braking assembly connecting the driving wheel with the driven wheel assembly. The integrated transmission mechanism replaces the existing belt transmission, the transmission effect is good, a reduction ratio is formed between the driving wheel and the driven wheel assembly during working, the rotation speed finally output by the switch reluctance motor is effectively reduced, braking is further realized through the braking assembly, the blade reduction effect is good, and the use is safe; the switch reluctance motor is characterized by further comprising a switch reluctance motor, wherein the switch reluctance motor is an alternating current power supply, an alternating current plug or a direct current power supply no matter in a working environment, the application range is wide, the power supply is diversified, and various power supply requirements are met.

Description

Mower comprising switch reluctance motor
Technical Field
The present invention relates to a lawn mower comprising a switched reluctance motor.
Background
A mower is a garden electric tool for trimming lawns, vegetation and the like, and the existing mower generally adopts a motor as a drive and drives a main shaft provided with a blade to operate through a belt. If the machine is required to be stopped in the operation process, the power supply is directly cut off, the blade still can run for a period of time at high speed under the inertia effect, and potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the technical problem of providing a mower comprising a switch reluctance motor, and solves the problem of potential safety hazard of the existing mower.
The utility model provides a lawn mower including switched reluctance motor, includes the casing, be equipped with PCB controller, switched reluctance motor and cutter subassembly in the casing, be equipped with the integrated drive mechanism that collects brake and speed reduction in an organic whole on the switched reluctance motor, integrated drive mechanism includes with the epaxial action wheel of switched reluctance motor output rigid coupling, setting up in the pivot, by action wheel driven driving wheel subassembly to and connect the brake subassembly from driving wheel subassembly.
By adopting the technical scheme, the integrated transmission mechanism replaces the existing belt transmission, the transmission effect is good, a reduction ratio is formed between the driving wheel and the driven wheel assembly during working, the rotating speed finally output by the switch reluctance motor is effectively reduced, braking is further realized through the braking assembly, the blade reduction effect is good, and the use is safe; the novel electric mower also comprises a switched reluctance motor, the switched reluctance motor has wide application range no matter whether the working environment is an alternating current power supply, an alternating current plug or a direct current power supply, the power supply is selected and diversified, various power supply requirements are met, meanwhile, the integrated transmission mechanism enables the switched reluctance motor and the mower to be of a perfect structure, and the speed reduction and the braking are combined into a whole, so that the novel electric mower is safe and efficient to use; the PCB controller is used as a carrier for electrical connection, and has small volume and small occupied space.
Preferably, the cutter assembly comprises a cutter shaft, a blade fixing seat fixed on the cutter shaft, and a blade arranged on the blade fixing seat.
Through adopting above-mentioned technical scheme, cutter assembly simple structure, installation and dismantlement are convenient, be convenient for maintain and change when cutter assembly wearing and tearing.
Preferably, the driven wheel assembly comprises a large gear, and the large gear is sleeved on the cutter shaft and meshed with the driving wheel.
Through adopting above-mentioned technical scheme, the action wheel adopts the pinion, and driven wheel subassembly adopts the gear wheel, and action wheel and driven wheel subassembly meshing setting, the transmission is steady, can adapt to wider speed and power transmission, and tooth resistance is strong, and complete machine overload capacity is strong.
Preferably, the brake assembly comprises a brake disc arranged above the large gear, a spring arranged between the brake disc and the large gear and a brake leather ring arranged on the lower surface of the large gear, wherein a plurality of convex teeth are arranged on the outer side of the brake leather ring at equal intervals, and the brake disc, the spring and the brake leather ring are all sleeved on the cutter shaft.
Through adopting above-mentioned technical scheme, friction through brake block and brake disc between produces the braking force to make the arbor stall, the spring plays the cushioning effect in the braking process, and the brake apron outside equidistant a plurality of protruding teeth that are equipped with, and protruding tooth makes driving wheel and follow driving wheel subassembly be difficult to take place the slope, reduces from the rocking of driving wheel subassembly when rotating.
Preferably, the driven wheel assembly comprises a planet carrier, a plurality of planet wheels arranged on the planet carrier, and a toothed ring meshed with the planet wheels.
By adopting the technical scheme, the planet carrier, the planet gears and the toothed ring jointly form planetary gear meshing rotation, the planetary gear rotation volume is small, the space occupied by the shell is small, and the arrangement replaces the working mode that the large gear is used as a driven wheel assembly, so that compared with the traditional working mode that the whole outside of the shell is reduced, the heat dissipation space inside the shell is enlarged, the bearing capacity is large, and the working is stable; the output end of the switch reluctance motor is connected with the driving wheel, the driving wheel is a pinion, the driving wheel is circumferentially meshed with the planet wheel, and the acting force of the driving wheel on the peripheral side wall of the planet wheel is just coincident with the acting force of the bearing on the rotating shaft, so that the situation of inclination cannot occur in working.
Preferably, the brake assembly comprises a brake disc arranged at the bottom of the planet carrier, a brake pad arranged below the brake disc, a spring arranged between the brake pad and the brake disc, the spring and the brake pad are all sleeved on the cutter shaft.
Through adopting above-mentioned technical scheme, produce the braking force through the friction between brake block and the brake disc to make the arbor stall, the spring plays the cushioning effect in the braking in-process, so effectually compensatied because of the switch reluctance motor rotational speed is too high and lead to the defect that can not use on the lawn mower, make switch reluctance motor can perfect combine together with the lawn mower simultaneously, the operation is safer, the noise is littleer.
Preferably, the PCB controller, the switch reluctance motor and the integrated transmission mechanism are fixed in the shell through a motor bracket.
Through adopting above-mentioned technical scheme, the motor support has fine support and spacing effect to switch reluctance motor, PCB controller and integrated drive mechanism, reduces the pressure to the casing, avoids taking place the slope and rocks in the course of the work.
Preferably, the motor support comprises an upper motor support and a lower motor support, the switch reluctance motor is arranged on the upper motor support, the PCB controller is arranged on the upper motor support in a suspended mode through the support, and the integrated transmission mechanism is arranged between the upper motor support and the lower motor support in a limiting mode.
By adopting the technical scheme, the motor bracket is arranged in a split mode, the structure is simple, the installation and the disassembly are convenient, the switch reluctance motor and the PCB controller are arranged on the upper bracket of the motor, the supporting and limiting functions are good, and the switch reluctance motor and the PCB controller are prevented from shaking, tilting and falling in the use process; the PCB controller is suspended and installed through the bracket, when the PCB controller generates heat during operation, the heat dissipation of the PCB controller is accelerated, the heat is prevented from gathering in the shell to influence the service performance of each device, and even safety accidents are caused; the integrated transmission mechanism is arranged between the upper motor support and the lower motor support, has good supporting and limiting functions on the integrated transmission mechanism, cannot deviate and misplace after being used for many times, and improves the use safety.
Preferably, a heat dissipation wheel is arranged on the upper bracket of the motor and is connected with an output shaft of the switch reluctance motor; and a plurality of heat dissipation holes are formed in the periphery of the heat dissipation fan on the upper motor support.
Through adopting above-mentioned technical scheme, be equipped with the heat dissipation wheel on the output shaft of switch reluctance motor, and casing and motor upper bracket are equipped with the louvre in the week side of heat dissipation wheel, form the air current when the heat dissipation wheel rotates, simultaneously, the direction of rotation from the driving wheel is the same with the direction of rotation of heat dissipation wheel, air concentration in the lateral wall department of installation cavity when driving wheel and heat dissipation wheel rotate to outside getting rid of the casing from the louvre under the circumstances of constantly circulating rotation, radiating effect is good, and each device receives the interference little, and working property is stable.
Preferably, a motor seat is arranged in the shell, and a honeycomb opening is arranged at the bottom of the motor seat.
Through adopting above-mentioned technical scheme, set up the motor cabinet bottom and be cellular opening for the air current is with wind upward pressure under the effect of lawn mower casing negative pressure, cooperates the fan blade combined action on the heat dissipation wheel, makes whole set of system form circulating type cooling system, and the radiating effect is good.
In order to solve the technical problems, the invention is realized by the following technical scheme:
in summary, the invention has the advantages that:
1. The integrated transmission mechanism replaces the existing belt transmission, the transmission effect is good, a reduction ratio is formed between the driving wheel and the driven wheel assembly during working, the rotation speed finally output by the switch reluctance motor is effectively reduced, braking is further realized through the braking assembly, the blade reduction effect is good, and the use is safe; the novel electric mower also comprises a switched reluctance motor, the switched reluctance motor has wide application range no matter whether the working environment is an alternating current power supply, an alternating current plug or a direct current power supply, the power supply is selected and diversified, various power supply requirements are met, meanwhile, the integrated transmission mechanism enables the switched reluctance motor and the mower to be of a perfect structure, and the speed reduction and the braking are combined into a whole, so that the novel electric mower is safe and efficient to use; the PCB controller is used as a carrier for electrical connection, and has small volume and small occupied space;
2. The switch reluctance motor is arranged on the motor upper bracket, the heat dissipation fan blade is arranged on the motor upper bracket, and the driving wheel is sleeved on the heat dissipation fan blade, so that a reduction ratio can be formed between the driving wheel and the driven wheel assembly, the final output rotating speed of the switch reluctance motor is reduced, and the brake is realized through the brake assembly, so that the defect that the switch reluctance motor cannot be used on a mower due to high rotating speed can be effectively overcome, and meanwhile, the switch reluctance motor and the mower are perfectly structured by the integrated transmission mechanism, so that the use is safe and efficient;
3. The driven wheel assembly is a planetary gear consisting of a planetary carrier, a planetary gear and a toothed ring, the planetary gear has small rotation volume and small space of the shell, and the arrangement replaces the working mode that a large gear is used as the driven wheel assembly, compared with the traditional working mode that the whole outside of the shell is reduced, the heat dissipation space inside the shell is enlarged, the bearing capacity is large, and the working is stable; the output end of the switch reluctance motor is connected with the driving wheel, the driving wheel adopts a pinion, and the driving wheel is meshed with the planet wheel in the circumferential direction, so that the acting force of the driving wheel on the circumferential side wall of the planet wheel is just coincident with the acting force of the bearing on the rotating shaft, and therefore, the situation of inclination cannot occur in operation;
4. The output shaft of the switch reluctance motor is provided with the radiating wheel, the shell and the upper motor support are provided with radiating holes on the periphery of the radiating wheel, air flow is formed when the radiating wheel rotates, meanwhile, the rotation direction of the driven wheel assembly is the same as that of the radiating wheel, air is concentrated at the side wall of the mounting cavity when the driven wheel assembly and the radiating wheel rotate, and the shell is discharged from the radiating holes under the condition of continuous circulating rotation, so that the radiating effect is good, each device is small in interference, and the working performance is stable.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a partial schematic view of a first embodiment of the present invention;
FIG. 3 is a schematic view of a brake assembly according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a cutter assembly according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the installation of a motor base and a second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a second embodiment of the present invention;
fig. 7 is a schematic structural view of a driven wheel assembly according to a second embodiment of the present invention.
Reference numerals:
1. A PCB controller; 2. a switched reluctance motor; 3. a cutter assembly; 31. a cutter shaft; 32. a blade holder; 33. a blade; 4. an integrated transmission mechanism; 41. a rotating shaft; 42. a driving wheel; 43. a driven wheel assembly; 431. a planet carrier; 432. a planet wheel; 433. a toothed ring; 44. a brake assembly; 441. a spring; 442. brake leather rings; 443. convex teeth; 444. a brake pad; 445. a brake disc; 5. a motor bracket; 51. a motor upper bracket; 52. a motor lower bracket; 53. a bracket; 6. a heat dissipation wheel; 7. a heat radiation hole; 8. a motor base; 9. honeycomb openings.
Detailed Description
As shown in fig. 1,2,3, 4, 5, 6 and 7.
Embodiment one:
the utility model provides a lawn mower containing switched reluctance motor, includes the casing, be equipped with PCB controller 1, switched reluctance motor 2 and cutter subassembly 3 in the casing, be equipped with on the switched reluctance motor 2 and collect brake and slow down integrated drive mechanism 4 in an organic whole, integrated drive mechanism 4 includes the pivot 41 with switched reluctance motor 2 output shaft rigid coupling, sets up the action wheel 42 on pivot 41, by action wheel 42 driven driving wheel subassembly 43 to and connect action wheel 42 and from the brake subassembly 44 of driving wheel subassembly 43.
The switched reluctance motor 2 can work through configuration of a power system no matter whether the working environment is an alternating current power supply, an alternating current plug or a direct current power supply, has wide application range, is diversified in power supply selection, and meets various power supply requirements; the PCB controller 1 is used as a carrier for electrical connection, and has small volume and small occupied space; the integrated transmission mechanism 4 replaces the existing transmission belt transmission, and even if the working time is long, the transmission efficiency and the transmission precision cannot be affected due to the looseness of the transmission belt; the speed reduction ratio is formed between the driving wheel 42 and the driven wheel assembly 43 during operation, the rotation speed of the final output of the switch reluctance motor 2 is effectively reduced, braking is realized through the braking assembly 44, the defect that the switch reluctance motor 2 cannot be used on a mower due to overhigh rotation speed is effectively overcome, and meanwhile, the integrated transmission mechanism 4 enables the switch reluctance motor 2 and the mower to be in a perfect structure, so that the use is safe and efficient.
The cutter assembly 3 comprises a cutter shaft 31, a blade fixing seat 32 fixed on the cutter shaft 31, and a blade 33 arranged on the blade fixing seat 32, and has simple structure, convenient installation and disassembly and convenient maintenance and replacement when the cutter assembly 3 is worn.
The driven wheel assembly 43 comprises a large gear which is sleeved on the cutter shaft 31 and is meshed with the driving wheel 42; the driving wheel 42 adopts a pinion, the driven wheel assembly 43 adopts a large gear, the driving wheel 42 and the driven wheel assembly 43 are meshed, the transmission is stable, the device can adapt to wide speed and power transmission, the tooth resistance capability is strong, and the overload capability of the whole machine is strong.
The brake assembly 44 comprises a brake disc 445 arranged above the bull gear, a spring 441 arranged between the brake disc 445 and the bull gear, and a brake rubber ring 442 arranged on the lower surface of the bull gear, wherein a plurality of convex teeth 443 are arranged on the outer side of the brake rubber ring 442 at equal intervals, and the brake disc 445, the spring 441 and the brake rubber ring 442 are all sleeved on the cutter shaft 31. Braking force is generated through friction between the brake leather ring 442 and the brake disc 445, so that the cutter shaft 31 stops rotating, the spring 441 plays a role in buffering in the braking process, a plurality of convex teeth 443 are arranged on the outer side of the brake leather ring 442 at equal intervals, the convex teeth 443 enable the driven wheel assembly 43 not to incline easily, and shaking of the driven wheel assembly 43 during rotation is reduced.
The PCB controller 1, the switch reluctance motor 2 and the integrated transmission mechanism 4 are fixed in the shell through a motor bracket 5; the motor bracket 5 has good supporting and limiting functions on the switch reluctance motor 2, the PCB controller 1 and the integrated transmission mechanism 4, reduces the pressure on the shell, and avoids tilting and shaking in the working process.
The motor bracket 5 comprises a motor upper bracket 51 and a motor lower bracket 52, the switch reluctance motor 2 is arranged on the motor upper bracket 51, the PCB controller 1 is arranged on the motor upper bracket 51 in a suspending way through a bracket 53, and the integrated transmission mechanism 4 is arranged between the motor upper bracket 51 and the motor lower bracket 52 in a limiting way; the motor bracket 5 is arranged in a split mode, the structure is simple, the installation and the disassembly are convenient, the switch reluctance motor 2 and the PCB controller 1 are installed on the motor upper bracket 51, the supporting and limiting functions are good, and the switch reluctance motor 2 and the PCB controller 1 are prevented from shaking, tilting and falling in the using process; the PCB controller 1 is mounted in a suspended manner through the support 53, and when the PCB controller 1 generates heat during operation, the heat dissipation of the PCB controller 1 is accelerated, so that the heat is prevented from accumulating in the shell to influence the service performance of each device and even cause safety accidents; the integrated transmission mechanism 4 is arranged between the motor upper bracket 51 and the motor lower bracket 52, has good supporting and limiting functions on the integrated transmission mechanism 4, can not deviate and misplace after being used for many times, and improves the use safety.
A heat dissipation wheel 6 is arranged on the motor upper bracket 51, and the heat dissipation wheel 6 is connected with an output shaft of the switch reluctance motor 2; a plurality of heat dissipation holes 7 are arranged on the periphery of the heat dissipation fan on the upper motor bracket 51.
The output shaft of the switch reluctance motor 2 is provided with the heat dissipation wheel 6, the shell and the motor upper bracket 51 are respectively provided with the heat dissipation holes 7 at the periphery of the heat dissipation wheel 6, air flow is formed when the heat dissipation wheel 6 rotates, meanwhile, the rotation direction of the large gear is the same as that of the heat dissipation wheel 6, air is concentrated at the side wall of the installation cavity when the large gear and the heat dissipation wheel 6 rotate, and the shell is removed from the heat dissipation holes 7 under the condition of continuous circulating rotation, so that the heat dissipation effect is good, each device is small in interference, and the working performance is stable.
The motor cabinet 8 is arranged in the machine shell, and a honeycomb opening 9 is arranged at the bottom of the motor cabinet 8. The air flow is enabled to press the wind upwards under the action of the negative pressure of the mower casing, and the fan blades on the heat dissipation wheel 6 are matched to act together, so that a circulating heat dissipation system is formed in the casing, and the heat dissipation effect is good.
Embodiment two:
A mower comprising a switched reluctance motor according to the first embodiment, and the second embodiment has the following differences, in that the driven wheel assembly 43 includes a planet carrier 431, a plurality of planet gears 432 disposed on the planet carrier 431, and a toothed ring 433 disposed in engagement with the planet gears 432. The planet carrier 431, the planet gears 432 and the toothed ring 433 jointly form planetary gear meshing rotation, the planetary gear has small rotation volume and small occupied space of the machine shell, and the arrangement replaces a working mode that a large gear is used as the driven wheel assembly 43, compared with the traditional working mode that the whole outside of the machine shell is reduced, the heat dissipation space inside the machine shell is enlarged, the bearing capacity is large, and the work is more stable; the output end of the switch reluctance motor 2 is connected with the driving wheel 42, the driving wheel 42 adopts a pinion, and the driving wheel 42 is meshed with the planet wheel 432 in the circumferential direction, so that the acting force of the driving wheel 42 on the circumferential side wall of the planet wheel 432 is just coincident with the acting force of the bearing on the rotating shaft 41, and therefore, no inclination occurs in operation.
The brake assembly 44 is arranged on a brake disc 445 at the bottom of the planet carrier 431, a brake pad 444 is arranged below the brake disc 445, a spring 441 is arranged between the brake pad 444 and the brake disc 445, the spring 441 and the brake pad 444 are all sleeved on the cutter shaft 31; the braking force is generated through friction between the brake pad 444 and the brake disc 445, so that the cutter shaft 31 is stopped, the spring 441 plays a role in buffering in the braking process, the defect that the switch reluctance motor cannot be used on a mower due to overhigh rotating speed is effectively overcome, meanwhile, the switch reluctance motor can be perfectly combined with the mower, the operation is safer, and the noise is smaller.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which is defined in the appended claims.

Claims (6)

1. A mower comprising a switched reluctance motor, comprising a housing, characterized in that: the integrated transmission mechanism comprises a rotating shaft fixedly connected with an output shaft of the switch reluctance motor, a driving wheel arranged on the rotating shaft, a driven wheel assembly driven by the driving wheel and a brake assembly connected with the driven wheel assembly; the driven wheel assembly comprises a large gear which is sleeved on the cutter shaft and meshed with the driving wheel; the brake assembly comprises a brake disc arranged above the large gear, a spring arranged between the brake disc and the large gear and a brake leather ring arranged on the lower surface of the large gear, wherein a plurality of convex teeth are arranged on the outer side of the brake leather ring at equal intervals, the brake disc, the spring and the brake leather ring are all sleeved on the cutter shaft, braking force is generated through friction between a brake block and the brake disc, and therefore the cutter shaft is stopped, and the spring plays a role in buffering in the braking process.
2. A lawnmower incorporating a switched reluctance motor as claimed in claim 1 wherein: the cutter assembly comprises a cutter shaft, a blade fixing seat fixed on the cutter shaft and a blade arranged on the blade fixing seat.
3. A lawnmower incorporating a switched reluctance motor as claimed in claim 1 wherein: the PCB controller, the switch reluctance motor and the integrated transmission mechanism are fixed in the shell through a motor bracket.
4. A lawnmower incorporating a switched reluctance motor as claimed in claim 3, wherein: the motor support comprises a motor upper support and a motor lower support, the switch reluctance motor is arranged on the motor upper support, the PCB controller is arranged on the motor upper support in a suspended mode through the support, and the integrated transmission mechanism is arranged between the motor upper support and the motor lower support in a limiting mode.
5. A lawnmower incorporating a switched reluctance motor as claimed in claim 4 wherein: a heat dissipation wheel is arranged on the upper bracket of the motor and is connected with an output shaft of the switch reluctance motor; and a plurality of heat dissipation holes are formed in the periphery of the heat dissipation fan on the upper motor support.
6. A lawnmower incorporating a switched reluctance motor as claimed in claim 1 wherein: the motor cabinet is arranged in the shell, and a honeycomb opening is formed in the bottom of the motor cabinet.
CN201811511841.3A 2018-12-11 2018-12-11 Mower comprising switch reluctance motor Active CN109756068B (en)

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Application Number Priority Date Filing Date Title
CN201811511841.3A CN109756068B (en) 2018-12-11 2018-12-11 Mower comprising switch reluctance motor

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Application Number Priority Date Filing Date Title
CN201811511841.3A CN109756068B (en) 2018-12-11 2018-12-11 Mower comprising switch reluctance motor

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CN109756068A CN109756068A (en) 2019-05-14
CN109756068B true CN109756068B (en) 2024-06-04

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111030371B (en) * 2019-12-18 2022-01-07 超音速智能科技(浙江)有限公司 Single-phase motor

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GB1371128A (en) * 1971-08-31 1974-10-23 Deere & Co Electric drive riding or tractor mower
US6085502A (en) * 1998-06-30 2000-07-11 Honda Giken Kogyo Kabushiki Kaisha Blade brake assembly
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CN106712444A (en) * 2015-07-13 2017-05-24 西华大学 External rotor switch magnetic resistance wheel-hub motor
CN108076836A (en) * 2016-11-21 2018-05-29 周宝东 A kind of electric four-wheeled mower blade arrestment mechanism
CN108386499A (en) * 2018-01-29 2018-08-10 宁波大叶园林设备股份有限公司 Gardens intelligent grass-removing four planetary gear rear-guard moving gear box of three-level
CN209462178U (en) * 2018-12-11 2019-10-01 浙江亚特电器有限公司 A kind of grass trimmer comprising switched reluctance machines

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