CN202978639U - Lifting motor for electric fork-lift truck - Google Patents
Lifting motor for electric fork-lift truck Download PDFInfo
- Publication number
- CN202978639U CN202978639U CN2012205860265U CN201220586026U CN202978639U CN 202978639 U CN202978639 U CN 202978639U CN 2012205860265 U CN2012205860265 U CN 2012205860265U CN 201220586026 U CN201220586026 U CN 201220586026U CN 202978639 U CN202978639 U CN 202978639U
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- rear end
- velocity transducer
- lifting motor
- winding
- end cap
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Abstract
The utility model discloses a lifting motor for an electric fork-lift truck. A cast-aluminum rotor externally sleeves and forms interference fit with an internal spline shaft. Two ends of the internal spline shaft rotatably fit with front and rear end caps respectively. A stator core externally sleeves the cast-aluminum rotor. There is a gap between the cast-aluminum rotor and the stator core. A winding is inserted in the stator core. The rear end cap is fixedly connected to a connection terminal of a velocity sensor. The rear end of the internal spline shaft is fixedly connected with a rotating member of the velocity sensor. A coded disc body of the rotating member of the velocity sensor is fixed on the rear end face of the internal spline shaft. A plurality of magnetic steels are uniformly installed on the outer circumference of the coded disc body. The magnetic steels are alternately distributed according to N pole and S pole. A Hall element of a velocity sensor stationary part is integrated on a Hall circuit board which is fixed on the rear end cap. There is a certain space between the Hall element and the outer ring of the magnetic steels. The rotating member of the velocity sensor synchronously rotates with the internal spline shaft. When each of the magnetic steels rotates over the Hall element, the Hall element induces a voltage signal, and the signal is transmitted to an external controller through the connection terminal of the velocity sensor.
Description
Technical field
The utility model belongs to electric fork drive device for vehicle manufacturing technology field, relates in particular to a kind of balance weight type electri forklift and drives the pallet fork three-phase low-voltage asynchronous motor.
Background technology
Electri forklift is that the pallet fork by vehicle front transports goods, and moving up and down by lifting motor in fork truck of pallet fork realizes driving.The energy source of electri forklift is direct-flow storage battery, up to the present, the lifting motor overwhelming majority of balance weight type electri forklift is still DC motor, but, complex structure less due to the DC motor specific power, can occupy larger space, fork truck inside, bring very large inconvenience to its installation.In addition, the mechanical commutation device of DC motor must keep sliding contact between brush and commutator in running, therefore, can have the phenomenons such as spark, noise, unlimited electrical interference, and maintenance period is short, needs often to change brush with being difficult to avoid; Simultaneously, the existence of mechanical commutator has limited the high-speed cruising of motor.
The utility model content
Existing DC motor volume is large, noise is high, reversing arrangement is fragile in order to overcome, and the problems such as motor poor reliability and after-sales service difficulty, the utility model provides a kind of electri forklift with the asynchronous lifting motor of low pressure, this AC asynchronous motor have volume little, simple in structure, do not need mechanical commutation device, noise low, sturdy and durable, can run up, the advantages such as operating characteristic is good, efficient is high, service free.
The technical scheme that its technical problem that solves the utility model adopts is: electri forklift lifting motor, comprise female splined shaft, bearing, front end housing, cast-aluminum rotor, stator core, three phase mains binding post, winding, velocity transducer splicing ear, rear end cap, velocity transducer stationary parts, velocity transducer rotating parts, cast-aluminum rotor is coated at female splined shaft, between the two by the interference fit carry-over moment, the front and back end of female splined shaft is rotatably assorted by a bearing and front end housing, rear end cap respectively, and front end housing, rear end cap are covered in the two-port of a support; Stator core is pressed in support, and is coated at cast-aluminum rotor, leaves the gap between the outer wall of cast-aluminum rotor and the inwall of stator core; Winding embeds in the stator slot of stator core, and the three-phase lead-out wire of winding is connected on the three phase mains binding post, and the three phase mains binding post is fixed in the outer wall of support; Be fixedly connected with the velocity transducer splicing ear on rear end cap; The rear end of female splined shaft is fixedly connected with the velocity transducer rotating parts, the velocity transducer rotating parts comprises the code-disc body, the code-disc body is fixed in the rear end face of female splined shaft, and the excircle of code-disc body is installed a plurality of magnet steel equably, and a plurality of magnet steel are alternately arranged by the N utmost point, the S utmost point; The velocity transducer stationary parts comprises Hall element, hall circuitboard, and Hall element is integrated on hall circuitboard, and hall circuitboard is fixed in rear end cap, and the outer ring of Hall element and magnet steel has a determining deviation; The velocity transducer rotating parts is with the female splined shaft synchronous rotary, and wherein, when each magnet steel turned over Hall element, Hall element induced voltage signal, and this voltage signal Negotiation speed transducer splicing ear is delivered in outer controller.
Preferably, winding is embedded in temperature sensor, and the temperature signal that temperature sensor records is delivered to outer controller by the temperature sensor splicing ear, and the temperature sensor splicing ear is fixed in rear end cap.
Preferably, hall circuitboard is fixed in a base, and base is fixed on rear end cap.
Preferably, rear end cap is fixedly connected with a sensor wrap, and sensor wrap with velocity transducer stationary parts, velocity transducer rotating parts cover in the inner.
Preferably, the outer wall of support is fixedly connected with a lifting bolt.
Preferably, support has louvre.
Preferably, described louvre two encloses, respectively the position, both ends of close support along the support annular arrangement totally.
Preferably, between front end housing and female splined shaft, oil sealing is housed.
Preferably, described stator core has 36 stator slots, be labeled as respectively in order 1-36, the U phase winding coil of three phase windings forms by following structure coiling: have six winding coils, embed respectively in 1 and 10,2 and 11,3 and 12,19 and 28,20 and 29,21 and 30 stator slot, connected by connecting line between coil; The composition of V, W phase, connection and arrangement form are mutually identical with U, and six winding coils of V phase embed respectively in 7 and 16,8 and 17,9 and 18,25 and 34,26 and 35,27 and 36 stator slot; Six winding coils of W phase embed respectively in 4 and 13,5 and 14,6 and 15,22 and 31,23 and 32,24 and 33 stator slot.
Preferably, described winding coil is formed by equivalent wire coiling 2 circles; Described equivalent wire is comprised of 34 fine copper wires.
In the structure of the utility model electri forklift with the asynchronous lifting motor of low pressure, consisted of the rotor assembly of motor by female splined shaft, cast-aluminum rotor; Consisted of the stator module of motor by winding, thermistor (temperature sensor), stator core, support and nameplate; The sensor cluster that has been formed motor by velocity transducer splicing ear, velocity transducer stationary parts and velocity transducer rotatable parts and sensor wrap.Rotor assembly, stator module and sensor cluster are by having consisted of asynchronous motor with assemblings such as bearing, front end housing, rear end cap, bolts.The utility model three-phase low-voltage asynchronous motor avoids safeguarding substantially, volume is little, heat radiation is good, noise is low, operating characteristic is good; The velocity transducer cost that the utility model adopts is low, is arranged on the motor outside, and is easy to maintenance.
Adopt winding combination provided by the utility model and arrangement mode, compare with existing common industrial asynchronous motor, under the condition that keeps the output equal-wattage, the electronic function of the utility model is worked below safe voltage 36V, have the ability of holding large electric current, and then obtain the larger overload capacity of motor.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In Fig. 1: 1, female splined shaft; 2, oil sealing; 3, bearing; 4, front end housing; 5, cast-aluminum rotor; 6, stator core; 7, support; 8, lifting bolt; 9, three phase mains binding post; 10, winding; 11, velocity transducer splicing ear; 12, temperature sensor splicing ear; 13, rear end cap; 14, temperature sensor; 15, velocity transducer stationary parts; 16, velocity transducer rotating parts; 17, sensor wrap; 18, hexagon socket head cap screw; 19, nameplate; 20, support louvre.
Fig. 2 is the punching figure of cast-aluminum rotor.
In Fig. 2: 5-1, rotor punching; 5-2-1, rotor; 5-2-2, shaft hole.
Fig. 3 is the front view of cast-aluminum rotor.
Fig. 4 is the end view of cast-aluminum rotor.
In Fig. 3,4: 5-2, rotor core; 5-3, end ring; 5-4, fan blade; 5-5, balance columns.
Fig. 5 is stator punching figure.
In Fig. 5: 6-1, stator punching; 6-2, stator slot.
Fig. 6 is that the U phase winding launches schematic diagram.
In Fig. 6: 36 stator slots of 1-36 numeral stator punching; Hexagon shown in a-b-c-d-e-f represents a winding coil; L is connecting line between coil, and U is that electric current flows into end, and X is the outflow of bus current end.
Fig. 7 is the profile of velocity transducer stationary parts.
In Fig. 7: 11-1, velocity transducer splicing ear; 15-1, hall circuitboard; 15-2, Hall element; 15-3, base.
Fig. 8 is velocity transducer rotating parts and base schematic diagram.
In Fig. 8: 15-3, base; 15-4, screw hole; 15-5, bolt hole; 16-1, code-disc body; 16-2, magnet steel.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is elaborated.
Referring to Fig. 1, the present embodiment electri forklift comprises female splined shaft 1, oil sealing 2, bearing 3, front end housing 4, cast-aluminum rotor 5, stator core 6, support 7, lifting bolt 8, three phase mains binding post 9, winding 10, velocity transducer splicing ear 11, temperature sensor splicing ear 12, rear end cap 13, temperature sensor 14, velocity transducer stationary parts 15, velocity transducer rotating parts 16, sensor wrap 17, hexagon socket head cap screw 18, nameplate 19 with the lifting motor.
Be coated at female splined shaft 1 after cast-aluminum rotor 5 heating, between the two by the interference fit transmitting torque, cast-aluminum rotor 5, female splined shaft 1 consist of the rotor assembly of motor.The front and back end of female splined shaft 1 is rotatably assorted by a bearing 3 and front end housing 4, rear end cap 13 respectively, and front and rear cover is covered in the two-port of support 7, and is fixedly connected with support 7 by hexagon socket head cap screw 18 respectively.Front end housing 4 also is equipped with oil sealing 2 with the contact position of female splined shaft 1 front end.
The locus of rotor assembly in motor interior controlled in front and rear cover 4, the 13 front and back end cappings with rotor assembly, stator module, guarantees to have certain gap between stator core 6 and rotor assembly.Also be fixedly connected with velocity transducer splicing ear 11 and temperature sensor splicing ear 12 on rear end cap 13, the rear end of female splined shaft 1 is fixedly connected with velocity transducer rotating parts 16(concrete structure and vide infra), velocity transducer stationary parts 15 and sensor wrap 17 are fixed on rear end cap 13, and sensor wrap 17 is covered the stationary parts 15 of transducer, the rotating parts 16 of transducer in the inner.Velocity transducer splicing ear 11, sensor wrap 17, velocity transducer stationary parts 15 and velocity transducer rotating parts 16 form the speed sensor assembly of motor.Velocity transducer rotating parts 16 is with splined shaft 1 synchronous rotary, and produce pulse signal in the stationary parts 15 of velocity transducer, signal Negotiation speed transducer splicing ear 11 passes to outer controller, the signal that outer controller Negotiation speed sensor cluster produces can be judged the current rotating speed of motor rotor assembly and position, and controls the rotating speed of motor with this.
Figure 2 shows that the punching figure of cast-aluminum rotor 5.Multi-disc rotor punching 5-1 laminates and forms rotor core 5-2, after rotor core 5-2 laminates moulding, it has rotor 5-2-1 and shaft hole 5-2-2, inject liquid aluminium in its rotor 5-2-1, cooling rear formation rotor bar, and end ring 5-3, the fan blade 5-4 and the balance columns 5-5 that form Fig. 3,4 rotor iron core 5-2 ends.Rotor bar in rotor core 5-2 and rotor thereof and end ring 5-3, fan blade 5-4 and the balance columns 5-5 of end have consisted of cast-aluminum rotor 5, are pressed into female splined shaft 1 relevant position after cast-aluminum rotor 5 heating, finally consist of the rotor assembly of motor.
Figure 5 shows that the punching figure of stator core 6, stator punching 6-1 is circular, and forms stator slot 6-2.Some stator punching 6-1 laminate, and form stator core 6, be embedded in winding 10 at stator slot 6-2, and imbed temperature sensor 14 in winding 10, and stator core 6, winding 10, temperature sensor 14 consist of motor band winding stator core.Stator core with winding is pressed into the stator module that support consists of motor.
Figure 6 shows that the expansion schematic diagram of U phase in motor three phase windings, that is: stator core 6 inner circles are launched tiling, 36 stator slots of 1-36 numeral stator punching; Hexagon shown in a-b-c-d-e-f represents a winding coil, hexagonal ab, de limit embeds respectively in the stator slot of corresponding stator core 6, each winding coil is to be formed by equivalent wire coiling 2 circles, connected by connecting line L between coil, and equivalent wire is comprised of 34 fine copper wires, and the ability that so equivalent wire holds electric current is exactly 34 times of every fine copper wire.U is that electric current flows into end, and X is the outflow of bus current end, and electric current is flowed into by the U end and is divided into two-way, merges into a route X end through two-way after winding and flows out, and the parallel branch number of motor is 2, and the total current in winding is 2 times of each branch road.The V of motor, the composition of W, connection are mutually identical with U with arrangement form, the V phase winding embeds in stator slot 7,8,9,16,17,18,25,26,27,34,35,36, the W phase winding embeds in remaining stator slot, consists of the three-phase symmetric winding of motor.
Fig. 7,8 is depicted as speed sensor assembly, and in Fig. 8, code-disc body 16-1 is fixed on the afterbody of female splined shaft 1, and the cylindrical of code-disc body 16-1 is installed a plurality of magnet steel 16-2 equably, and the N utmost point of magnet steel 16-2, the S utmost point are alternately placed.Base 15-3 is fixed by bolts on rear end cap 13 by bolt hole 15-5, Hall element 15-2 is integrated on hall circuitboard 15-1, hall circuitboard 15-1 is screwed on base 15-3 by screw hole 15-4, and the outer ring of Hall element 15-2 and magnet steel 16-2 has a determining deviation.The rotating parts 16 of velocity transducer is with female splined shaft 1 synchronous rotary, wherein, N, when S utmost point magnet steel 16-2 turns over Hall element 15-2, can induce therein voltage signal, this signal Negotiation speed transducer splicing ear 11 is delivered in outer controller, controller can go out the current speed of motor and position by this calculated signals, and then controls the rotating speed of motor.Hall element and hall circuitboard adopt prior art.
The utility model low-pressure asynchronous motor, winding 10 embeds in stator core 6 grooves by above-mentioned coiling and distribution mode, just can make motor that the ability of holding large electric current is arranged.Different from industrial normal asynchronous, the operating mode operation of the utility model motor below safe voltage 36V, rated current is 10 times of outputs that also can keep same levels power of Same Efficieney asynchronous motor, is applicable to the battery-driven applying working condition of electri forklift.In addition, the velocity transducer that the utility model adopts, the external inlet sensor of its functional equivalent, and low price greatly reduce the cost of motor; It designs the outside in motor, and installation and maintenance are also convenient.
The space that more than is each parts of the utility model consists of, after passing into low-voltage AC to motor, electric current enters in winding 10 by U, V, W three phase terminals subflow, and in the interior formation rotating magnetic field of stator core 6, and then inducing rotor current in rotor bar, the rotating magnetic field in stator core 6 and the function of current in rotor bar produce electromagnetic force, form moment, drag the rotor assembly rotation and realize driving function.
The utility model electri forklift with lifting low-tension motor brushless, noise is little, sturdy and durable, volume is little, heat radiation is good.
Claims (10)
1. electri forklift lifting motor, comprise female splined shaft, bearing, front end housing, cast-aluminum rotor, stator core, three phase mains binding post, winding, velocity transducer splicing ear, rear end cap, velocity transducer stationary parts, velocity transducer rotating parts, cast-aluminum rotor is coated at female splined shaft, between the two by the interference fit carry-over moment, the front and back end of female splined shaft is rotatably assorted by a bearing and front end housing, rear end cap respectively, it is characterized in that: front end housing, rear end cap are covered in the two-port of a support; Stator core is pressed in support, and is coated at cast-aluminum rotor, leaves the gap between the outer wall of cast-aluminum rotor and the inwall of stator core; Winding embeds in the stator slot of stator core, and the three-phase lead-out wire of winding is connected on the three phase mains binding post, and the three phase mains binding post is fixed in the outer wall of support; Be fixedly connected with the velocity transducer splicing ear on rear end cap; The rear end of female splined shaft is fixedly connected with the velocity transducer rotating parts, the velocity transducer rotating parts comprises the code-disc body, the code-disc body is fixed in the rear end face of female splined shaft, and the excircle of code-disc body is installed a plurality of magnet steel equably, and a plurality of magnet steel are alternately arranged by the N utmost point, the S utmost point; The velocity transducer stationary parts comprises Hall element, hall circuitboard, and Hall element is integrated on hall circuitboard, and hall circuitboard is fixed in rear end cap, and the outer ring of Hall element and magnet steel has a determining deviation; The velocity transducer rotating parts is with the female splined shaft synchronous rotary, and wherein, when each magnet steel turned over Hall element, Hall element induced voltage signal, and this voltage signal Negotiation speed transducer splicing ear is delivered in outer controller.
2. electri forklift as claimed in claim 1 lifting motor, it is characterized in that: winding is embedded in temperature sensor, the temperature signal that temperature sensor records is delivered to outer controller by the temperature sensor splicing ear, and the temperature sensor splicing ear is fixed in rear end cap.
3. electri forklift as claimed in claim 1 lifting motor, it is characterized in that: hall circuitboard is fixed in a base, and base is fixed on rear end cap.
4. as the described electri forklift of claim 1-3 any one lifting motor, it is characterized in that: rear end cap is fixedly connected with a sensor wrap, and sensor wrap with velocity transducer stationary parts, velocity transducer rotating parts cover in the inner.
5. electri forklift as claimed in claim 1 lifting motor, it is characterized in that: the outer wall of support is fixedly connected with a lifting bolt.
6. electri forklift lifting motor as described in claim 1 or 5, it is characterized in that: support has louvre.
7. electri forklift as claimed in claim 6 lifting motor is characterized in that: described louvre is along the support annular arrangement, and totally two circles are respectively near the position, both ends of support.
8. as claim 1-3 or the described electri forklift of 5 any one lifting motor, it is characterized in that: between front end housing and female splined shaft, oil sealing is housed.
9. as the described electri forklift of claim 1-3 any one lifting motor, it is characterized in that: described stator core has 36 stator slots, be labeled as respectively in order 1-36, the U phase winding coil of three phase windings forms by following structure coiling: have six winding coils, embed respectively in 1 and 10,2 and 11,3 and 12,19 and 28,20 and 29,21 and 30 stator slot, connected by connecting line between coil; The composition of V, W phase, connection and arrangement form are mutually identical with U, and six winding coils of V phase embed respectively in 7 and 16,8 and 17,9 and 18,25 and 34,26 and 35,27 and 36 stator slot; Six winding coils of W phase embed respectively in 4 and 13,5 and 14,6 and 15,22 and 31,23 and 32,24 and 33 stator slot.
10. electri forklift as claimed in claim 9 lifting motor, it is characterized in that: described winding coil is formed by equivalent wire coiling 2 circles; Described equivalent wire is comprised of 34 fine copper wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205860265U CN202978639U (en) | 2012-11-08 | 2012-11-08 | Lifting motor for electric fork-lift truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205860265U CN202978639U (en) | 2012-11-08 | 2012-11-08 | Lifting motor for electric fork-lift truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978639U true CN202978639U (en) | 2013-06-05 |
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ID=48519662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205860265U Expired - Fee Related CN202978639U (en) | 2012-11-08 | 2012-11-08 | Lifting motor for electric fork-lift truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978639U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931791A (en) * | 2012-11-08 | 2013-02-13 | 浙江西子富沃德电机有限公司 | Lifting electrical motor for electrical forklift |
| CN103762783A (en) * | 2014-02-12 | 2014-04-30 | 浙江联宜电机股份有限公司 | Motor rear end cover structure with Hall assembly |
| CN107342720A (en) * | 2017-08-28 | 2017-11-10 | 广东威灵电机制造有限公司 | Motor control assembly and method and washing machine |
| CN110535293A (en) * | 2018-05-24 | 2019-12-03 | 江苏伯海电驱动科技有限公司 | A kind of permanent magnet synchronous motor with buffer-type revolving speed intelligent speed-control structure |
-
2012
- 2012-11-08 CN CN2012205860265U patent/CN202978639U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931791A (en) * | 2012-11-08 | 2013-02-13 | 浙江西子富沃德电机有限公司 | Lifting electrical motor for electrical forklift |
| CN102931791B (en) * | 2012-11-08 | 2015-05-27 | 浙江西子富沃德电机有限公司 | Lifting electrical motor for electrical forklift |
| CN103762783A (en) * | 2014-02-12 | 2014-04-30 | 浙江联宜电机股份有限公司 | Motor rear end cover structure with Hall assembly |
| CN107342720A (en) * | 2017-08-28 | 2017-11-10 | 广东威灵电机制造有限公司 | Motor control assembly and method and washing machine |
| CN110535293A (en) * | 2018-05-24 | 2019-12-03 | 江苏伯海电驱动科技有限公司 | A kind of permanent magnet synchronous motor with buffer-type revolving speed intelligent speed-control structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20211108 |