CN218041153U - Water-cooling permanent magnet motor for driving forklift - Google Patents
Water-cooling permanent magnet motor for driving forklift Download PDFInfo
- Publication number
- CN218041153U CN218041153U CN202222301127.XU CN202222301127U CN218041153U CN 218041153 U CN218041153 U CN 218041153U CN 202222301127 U CN202222301127 U CN 202222301127U CN 218041153 U CN218041153 U CN 218041153U
- Authority
- CN
- China
- Prior art keywords
- rear end
- end cover
- water
- permanent magnet
- support bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a water-cooling permanent magnet motor is used in fork truck drive, including the front end housing, the stator, rotor and rear end cap, the stator is established to the water-cooling stator, including frame and winding stator core, winding stator core and frame interference fit, be equipped with the cooling water course in the frame lateral wall, the lateral surface is equipped with two business turn over water nozzles and cooling water course intercommunication, in winding stator core is located to the rotor cover, including rotor core and motor shaft, rotor core and motor shaft fixed connection, be equipped with preceding support bearing between outer disc of motor shaft front end and the front end housing in the disc, be equipped with back support bearing between outer disc of rear end and the rear end cap in the disc, be equipped with the outlet box rather than integrated into one piece on the rear end cap, the region that the front end housing rear end is close to winding stator core is equipped with the red enamel insulated coating of three proofings. The utility model discloses permanent-magnet machine is applicable to battery voltage 540 VDC's high-voltage platform, has improved fork truck charge speed greatly, has improved motor efficiency, has reduced the energy consumption loss.
Description
Technical Field
The utility model relates to a fork truck driving motor technical field especially relates to a water-cooling permanent magnet motor for fork truck drive.
Background
At present, motors used by domestic electric forklifts are mostly asynchronous motors of 80VDC platforms. The 80VDC platform truck charges too slowly to fit most of today's needs. And the efficiency of the asynchronous motor is relatively low, and the energy consumption loss is large.
SUMMERY OF THE UTILITY MODEL
Charging too slowly for solving current electric fork-lift, asynchronous machine efficiency is not high, the great problem of energy consumption loss, the utility model provides a water-cooling permanent magnet motor is used in fork truck drive.
In order to achieve the above object, the utility model provides a following technical scheme:
a water-cooled permanent magnet motor for forklift driving comprises a front end cover, a stator, a rotor and a rear end cover, and is characterized in that the stator is a water-cooled stator and comprises a base and a winding stator core, the outer circular surface of the winding stator core is in interference fit with the inner circular surface of the base to ensure that the winding stator core and the base cannot rotate relatively, the front end surface of the base is fixedly connected with the front end cover, the rear end surface of the base is fixedly connected with the rear end cover, a cooling water channel is arranged in the outer side wall of the base, two water inlet and outlet nozzles are arranged at the front end of the outer side surface and communicated with the cooling water channel, the water inlet and outlet nozzles are connected with an external cooling system, the rotor is sleeved in the winding stator core and comprises a rotor core and a motor shaft, the rotor core is a permanent magnet rotor core and fixedly connected with the outer circular surface in the middle of the motor shaft through a flat key, the outer circular surfaces at two ends of the motor shaft are respectively coaxially sleeved in central holes of the front end cover and the front end cover, a front support bearing is arranged between the outer circular surface of the front end surface of the rear end cover and the inner circular surface of the rear end cover, a wire outlet box is connected with the rear end cover in a sealing way;
the region of the rear end of the front end cover, which is close to the winding stator core, is provided with a three-proofing iron red enamel paint insulating coating for the insulation enhancement treatment between the front end cover and the winding stator core, so that the water-cooled permanent magnet motor is suitable for a high-voltage platform with battery voltage of 540 VDC.
Preferably, a first spigot is arranged on the rear end face of the front end cover, and the front end cover is positioned and fixedly connected with the front end of the base through the first spigot; and a second spigot is arranged on the front end face of the rear end cover, and the rear end cover is positioned and fixedly connected with the rear end of the machine base through the second spigot.
Preferably, the middle of the front end cover is provided with a first through hole, the front side of the first through hole is provided with a coaxial first counter bore, the rear side of the first through hole is provided with a coaxial second counter bore, the front support bearing is arranged in the second counter bore, and an oil seal is arranged between the outer circular surface of the front side of the front support bearing on the motor shaft and the inner side wall of the first counter bore.
Preferably, the middle of the rear end cover is provided with a second through hole, the front side of the second through hole is provided with a coaxial third counter bore, the rear side of the second through hole is provided with a coaxial stepped counter bore, the rear support bearing is arranged in the third counter bore, the outer circular surface of the rear side of the rear support bearing on the motor shaft is provided with an encoder, and the encoder is fixedly connected in the stepped counter bore.
Preferably, the encoder is a rotary transformer or an absolute value encoder.
Preferably, the cooling water passage has an annular axial S-shape or a circumferential spiral shape.
Preferably, a sealing gasket is arranged between the rear end face of the outlet box and the box cover for sealing; and sealant is respectively coated on the mounting fitting surfaces of the front end cover and the rear end cover and the base, so that the protection grade of the motor can meet the IP67 requirement.
Preferably, the front support bearing and the rear support bearing both adopt deep groove ball bearings or angular contact bearings.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the three-proofing iron oxide red enamel insulating coating to enhance insulation, reduces discharge distance (space), and makes the permanent magnet motor suitable for the high-voltage platform with battery voltage of 540VDC, thereby greatly improving charging speed, greatly improving efficiency of the permanent magnet motor compared with the prior asynchronous motor, reducing energy consumption loss, and solving the problems that the prior electric forklift is too slow in charging, the asynchronous motor is not high in efficiency and has large energy consumption loss;
2. the utility model has the advantages that the structural layout is ingenious, the manufacturability is good, the winding stator core and the frame adopt interference fit, the mutual rotation between the winding stator core and the frame is prevented, the anti-rotation flat key connection structure is reduced, and the frame processing difficulty is reduced;
3. the utility model discloses a sealed pad and sealed glue, the motor protection level reaches the IP67 requirement.
4. The utility model adopts water cooling to effectively improve the heat dispersion of the motor;
5. the utility model discloses the motor lightweight, motor weight is about former asynchronous machine's 60%, and the cost is equivalent to former asynchronous machine or even lower.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 2 is a schematic external structural view of an embodiment of the present invention;
fig. 3 is a schematic view of the structure of the S-shaped cooling water channel in the second machine base according to the embodiment of the present invention.
In the figure: 1. the motor comprises a front end cover, 101, a first spigot, 102, a first counter bore, 103, a second counter bore, 104, a three-proofing iron red enamel insulating coating, 2, a stator, 201, a winding stator core, 202, a base, 203, a water inlet and outlet nozzle, 204, a cooling water channel, 3, a rear end cover, 301, a second spigot, 302, a third counter bore, 303, a stepped counter bore, 4, an outlet box, 5, a front support bearing, 6, a rotor, 601, a rotor core, 602, a motor shaft, 603, a flat key, 7, a rear support bearing, 8, an encoder, 9, an oil seal, 10, a sealing gasket, 11 and a box cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment of the present invention includes a front end housing 1, a stator 2, a rotor 6 and a rear end housing 3, the stator 2 is a water-cooled stator, and includes a base 202 and a winding stator core 201, the outer circular surface of the winding stator core 201 and the inner circular surface of the base 202 are in interference fit, so as to ensure that the winding stator core 201 and the base 202 do not rotate relatively, reduce the anti-rotation flat key connection structure, and reduce the processing difficulty of the base 202;
the front end face of the base 202 is fixedly connected with the front end cover 1 through a plurality of bolts, and the rear end face of the base is fixedly connected with the rear end cover 3 through a plurality of bolts; a cooling water channel 204 is arranged in the outer side wall of the base 201, the shape of the cooling water channel 204 is set to be circumferential spiral, two water inlet and outlet nozzles 203 are arranged at the front end of the outer side surface of the base 201 and communicated with the cooling water channel 204, and the water inlet and outlet nozzles 203 are connected with an external cooling system to form a circulating cooling system;
the rotor 6 is sleeved in the winding stator core 201 and comprises a rotor core 601 and a motor shaft 602, wherein the rotor core 601 is a permanent magnet rotor core and is fixedly connected with the middle outer circular surface of the motor shaft 602 through a flat key 603; the outer circular surfaces of two ends of the motor shaft 602 are coaxially sleeved in the central holes of the front end cover 1 and the rear end cover 3 respectively, a front support bearing 5 is arranged between the outer circular surface of the front end of the motor shaft 602 and the inner circular surface of the front end cover 1, a rear support bearing 7 is arranged between the outer circular surface of the rear end and the inner circular surface of the rear end cover 3, a wire outlet box 4 which is integrally formed with the rear end cover 3 is arranged on the rear end surface of the rear end cover 3, and the wire outlet box 4 and the rear end cover 3 are integrally formed, so that the volume of the motor is reduced and the cost is reduced; the back end surface of the outlet box 4 is hermetically connected with a box cover 11;
the region, close to the winding stator core 201, at the rear end of the front end cover 1 is provided with a three-proofing iron red enamel insulating coating 104 for insulation enhancement treatment between the front end cover 1 and the winding stator core 201, so that the water-cooled permanent magnet motor is suitable for a high-voltage platform with battery voltage of 540VDC, the charging speed of a forklift is greatly improved, and the problem of slow charging of the existing forklift is solved.
Preferably, a first seam allowance 101 is arranged on the rear end face of the front end cover 1, and the front end cover 1 is positioned and fixedly connected with the front end of the base 202 through the first seam allowance 101; the front end face of the rear end cover 3 is provided with a second spigot 301, and the rear end cover 3 is positioned and fixedly connected with the rear end of the base 202 through the second spigot 301.
Preferably, a first through hole is formed in the middle of the front end cover 1, a first counter bore 102 is coaxially formed in the front side of the first through hole, a second counter bore 103 is coaxially formed in the rear side of the first through hole, the front support bearing 5 is arranged in the second counter bore 103, and an oil seal 9 is arranged between the outer circular surface of the front side of the front support bearing 5 and the inner side wall of the first counter bore 102 on the motor shaft 602.
Preferably, a second through hole is formed in the middle of the rear end cover 3, a coaxial third counterbore 302 is formed in the front side of the second through hole, a coaxial stepped counterbore 303 is formed in the rear side of the second through hole, the rear support bearing 7 is arranged in the third counterbore 302, an encoder 8 is arranged on the outer circular surface of the rear side of the rear support bearing 7 on the motor shaft 602, the encoder 8 is fixedly connected in the stepped counterbore 303, and the encoder 8 is a rotary transformer.
Preferably, the region of the rear end of the front end cover 1 close to the winding stator core 201 is provided with a three-proof iron red enamel insulating coating 104 for insulation enhancement treatment between the front end cover 1 and the winding stator core 201. The insufficient insulation of the winding end part to the ground caused by the over-small distance between the winding end part and the ground is avoided, so that the size of the motor can be reduced, and the requirement that the motor is suitable for a high-voltage platform with the battery voltage of 540VDC is met.
Preferably, a sealing gasket 10 is arranged between the rear end face of the outlet box 4 and the box cover 11 for sealing; sealant is respectively coated on the mounting matching surfaces of the front end cover 1 and the rear end cover 3 and the base 202, so that the protection grade of the motor can meet the IP67 requirement.
Preferably, deep groove ball bearings are adopted as the front support bearing 5 and the rear support bearing 7.
As shown in fig. 3, the second embodiment of the present invention is substantially the same as the first embodiment, except that the cooling water passage 204 in the housing 202 is formed in an annular S shape.
The encoder 8 adopts an absolute value encoder; the front support bearing 5 and the rear support bearing 7 both adopt angular contact bearings.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (8)
1. A water-cooled permanent magnet motor for forklift driving comprises a front end cover, a stator, a rotor and a rear end cover, and is characterized in that the stator is a water-cooled stator and comprises a base and a winding stator core, the outer circular surface of the winding stator core is in interference fit with the inner circular surface of the base to ensure that the winding stator core and the base cannot rotate relatively, the front end surface of the base is fixedly connected with the front end cover, the rear end surface of the base is fixedly connected with the rear end cover, a cooling water channel is arranged in the outer side wall of the base, two water inlet and outlet nozzles are arranged at the front end of the outer side surface and communicated with the cooling water channel, the water inlet and outlet nozzles are connected with an external cooling system, the rotor is sleeved in the winding stator core and comprises a rotor core and a motor shaft, the rotor core is a permanent magnet rotor core and fixedly connected with the outer circular surface in the middle of the motor shaft through a flat key, the outer circular surfaces at two ends of the motor shaft are respectively coaxially sleeved in central holes of the front end cover and the front end cover, a front support bearing is arranged between the outer circular surface of the front end surface of the rear end cover and the inner circular surface of the rear end cover, a wire outlet box is connected with the rear end cover in a sealing way;
the region of the rear end of the front end cover, which is close to the winding stator core, is provided with a three-proofing iron red enamel paint insulating coating for the insulation enhancement treatment between the front end cover and the winding stator core, so that the water-cooled permanent magnet motor is suitable for a high-voltage platform with battery voltage of 540 VDC.
2. The water-cooled permanent magnet motor for driving a forklift according to claim 1, characterized in that: the rear end face of the front end cover is provided with a first spigot, and the front end cover is positioned and fixedly connected with the front end of the base through the first spigot; and a second spigot is arranged on the front end surface of the rear end cover, and the rear end cover is positioned and fixedly connected with the rear end of the machine base through the second spigot.
3. The water-cooled permanent magnet motor for driving a forklift truck according to claim 1, characterized in that: the middle of the front end cover is provided with a first through hole, the front side of the first through hole is provided with a coaxial first counter bore, the rear side of the first through hole is provided with a coaxial second counter bore, the front support bearing is arranged in the second counter bore, and an oil seal is arranged between the outer circular surface of the front side of the front support bearing on the motor shaft and the inner side wall of the first counter bore.
4. The water-cooled permanent magnet motor for driving a forklift truck according to claim 1, characterized in that: the motor shaft is provided with a rear support bearing, the rear end of the motor shaft is provided with a first through hole, the rear end of the motor shaft is provided with a rear support bearing, the middle of the rear end cover is provided with a second through hole, the front side of the second through hole is provided with a coaxial third counter bore, the rear side of the second through hole is provided with a coaxial step-shaped counter bore, the rear support bearing is arranged in the third counter bore, an encoder is arranged on the outer circular surface of the rear side of the rear support bearing on the motor shaft, and the encoder is fixedly connected in the step-shaped counter bore.
5. The water-cooled permanent magnet motor for forklift drive according to claim 4, characterized in that: the encoder adopts a rotary transformer or an absolute value encoder.
6. The water-cooled permanent magnet motor for driving a forklift according to claim 1, characterized in that: the shape of the cooling water channel is a ring shape, an axial S shape or a circumferential spiral shape.
7. The water-cooled permanent magnet motor for forklift drive according to any one of claims 1 to 6, characterized in that: a sealing gasket is arranged between the rear end face of the outlet box and the box cover for sealing; and sealant is respectively coated on the mounting fitting surfaces of the front end cover and the rear end cover and the base, so that the protection grade of the motor can meet the IP67 requirement.
8. The water-cooled permanent magnet motor for driving a forklift according to claim 7, characterized in that: the front support bearing and the rear support bearing are both deep groove ball bearings or angular contact bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222301127.XU CN218041153U (en) | 2022-08-30 | 2022-08-30 | Water-cooling permanent magnet motor for driving forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222301127.XU CN218041153U (en) | 2022-08-30 | 2022-08-30 | Water-cooling permanent magnet motor for driving forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218041153U true CN218041153U (en) | 2022-12-13 |
Family
ID=84351252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222301127.XU Active CN218041153U (en) | 2022-08-30 | 2022-08-30 | Water-cooling permanent magnet motor for driving forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218041153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094236A (en) * | 2023-04-10 | 2023-05-09 | 宁波东力传动设备有限公司 | Water-cooling motor with one-way unidirectional circulating water-cooling motor shell |
-
2022
- 2022-08-30 CN CN202222301127.XU patent/CN218041153U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094236A (en) * | 2023-04-10 | 2023-05-09 | 宁波东力传动设备有限公司 | Water-cooling motor with one-way unidirectional circulating water-cooling motor shell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218041153U (en) | Water-cooling permanent magnet motor for driving forklift | |
| CN103095084B (en) | A kind of oil-immersed type high-specific-power permanent-magnet brushless DC electric machine | |
| CN203206019U (en) | Rotor structure of embedded tangential magnetic field brushless direct current motor | |
| CN101958620A (en) | High-voltage explosion-proof type three-phase asynchronous motor | |
| CN107394963A (en) | A kind of motor with immersion type liquid cooled stator armature | |
| CN210431048U (en) | Oil immersion type integrated permanent magnet brushless direct current motor | |
| CN201521462U (en) | Novel full through-flow submersible pump | |
| CN202309265U (en) | Explosion-proof ultrahigh-efficiency three-phase asynchronous motor with cast copper rotor | |
| CN207853719U (en) | A kind of 45 tons of hybrid power mine truck magneto alternators | |
| CN101446291B (en) | High-efficiency shield pump | |
| CN111404341A (en) | Disk type permanent magnet motor applied to crane | |
| CN207691572U (en) | A kind of hermetic motor mounting structure | |
| CN217427892U (en) | Motor comprising resolver | |
| CN203554194U (en) | Three-phase asynchronous motor with inner fan structure | |
| CN2276687Y (en) | Rare earth permanent magnet outer rotor wheeled electrical machinery | |
| CN211830520U (en) | Disk type permanent magnet motor applied to crane | |
| CN105805022B (en) | A kind of portable series excited machine water pump | |
| CN201750313U (en) | Squirrel-cage motor rotor of hot water circulating pump | |
| CN114142656A (en) | High-voltage explosion-proof type low-speed permanent magnet direct drive motor | |
| CN210518072U (en) | Low-speed large-torque low-voltage explosion-proof variable-frequency permanent magnet synchronous motor | |
| CN207218459U (en) | Small-power triphase asynchronous motor | |
| CN206099601U (en) | High -efficient cooling tower special motor | |
| CN206323258U (en) | Water-cooled wheel hub motor | |
| CN207134897U (en) | A kind of high pulling torque servomotor | |
| CN206077159U (en) | Outer rotor Circular Winding induction machine with water-cooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |