CN201444612U - Variable frequency motor used for digger - Google Patents
Variable frequency motor used for digger Download PDFInfo
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- CN201444612U CN201444612U CN2009200105506U CN200920010550U CN201444612U CN 201444612 U CN201444612 U CN 201444612U CN 2009200105506 U CN2009200105506 U CN 2009200105506U CN 200920010550 U CN200920010550 U CN 200920010550U CN 201444612 U CN201444612 U CN 201444612U
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- main shaft
- motor
- heat radiation
- frequency motor
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Abstract
The utility model discloses a variable frequency motor used for a digger, which comprises a velometer, an end cover, a main shaft, a stator, a rotor, a machine casing and an outer cover, wherein the rotor consists of an iron core, a coil or a conducting bar and a spindle, and is sheathed on the main shaft to become one; the stator mainly consists of the iron core, the coil and a frame, and is arranged on the machine casing; the upper side of the machine casing is provided with a cooling motor; the outer cover is fixed on the machine casing through evenly-distributed fastening bolts; and the main shaft is sleeved on the machine casing through two cylindrical roller bearings. The variable frequency motor has the advantages of easy speed regulation, energy saving, no commutator and electric brush, simple structure, convenient control, easy maintenance, low cost, no sparkle and strong adaptive capacity to environment, and can expand capacity, realize high-speed and high-voltage operation, and realize soft start and prompt braking action.
Description
Technical field
The present invention relates to a kind of variable-frequency motor that is used for excavator, belong to technical field of motors.
Background technology
Excavator adopts dc traction system mostly both at home and abroad at present, and direct current machine is owing to exist commutator, and it makes complicated, and price is higher; Its shortcoming is that commutator and brush are arranged, and complex structure is safeguarded inconvenience, the cost height; Capacity cannot enlarge, and can not realize high-speed and the high voltage operation; Spark is arranged, shortcomings such as adaptive capacity to environment difference.The power-supply device that the three-phase low tension is provided at present generally all is the frequency conversion unit, sends three-phase intermediate frequency low tension with a coaxial configuration three-phase of drive or single-phase intermediate frequency low voltage generator during promptly by a three-phase or single-phase asynchronous motor energising running, so be called unit.Its shortcoming is that volume is big, quality heavy, consumptive material is many, price is expensive, use is inconvenient.
Summary of the invention
A kind of variable-frequency motor that is used for excavator disclosed in this invention comprises velometer, end cap, main shaft, stator, rotor, end cap, heat radiation motor, enclosing cover, protection network and casing; Rotor is made up of iron core, coil or sliver, rotating shaft, and rotor is sleeved on the main shaft, becomes one with main shaft; Stator mainly is made up of iron core, coil and support, and stator is installed on the casing; The upside of casing has the heat radiation casing; Enclosing cover is fixed on the casing by uniform fastening bolt; Main shaft is sleeved on the casing by two cylinder roller bearings.The heat radiation motor is installed in a side of heat radiation casing, and the heat radiation casing communicates with casing inside, and the output of heat radiation motor links to each other with heat radiation electric machine main shaft in the casing that dispels the heat.The both sides of electric machine main shaft all are torque outputs, and the torque output of both sides has keyway and key, along the axial outside nut is installed along axial middle part.Velometer is installed in the enclosing cover, and described velometer is connected with teeth groove, and teeth groove is sleeved on the electric machine main shaft.A protection network is housed on the casing, and described protection network is fixed on the outside of casing by fastening bolt.Bottom of shell is a pedestal, and the shoulder hole that holds the ground connection set bolt is arranged on the pedestal.
Velometer of the present invention by transmitter, converts the teeth groove variable signal behind the signal of telecommunication to signal conveys to frequency converter, to adjust motor speed again; End cap is the strutting piece of rotating part, in order to lay bearing and measure speed gears; These parts also play the effect of protection stator and rotor; Bearing is a NJ type cylinder roller bearing, to adapt to bad working environment and complicated operating characteristic; Stator mainly is made up of iron core, coil, support etc., and the three-phase alternating current electric energy that frequency converter is imported passes through current-carrying part coil and magnetic conduction part iron core, converts rotating magnetic field to; Rotor mainly is made up of iron core, coil or sliver, rotating shaft etc., and this rotating parts is the significant components that converts electric energy to mechanical energy; Cascade oiling oil enters bearing by this part; Radiator fan provides power for the heat radiation of motor stator and rotor, and the heat that produces during machine operation is sent outside the machine, makes motor energy operate as normal; Enclosing cover is in order to support and protection encoder velocity transducer; Protection network has protection concurrently, heat radiation and watch window effect; Earth stud connects earth conductor cable; Priming cup and oil pipe are the fueling vehicles of bearing.
It is easy, energy-conservation that the present invention has a speed governing; Absence of commutator and brush, simple in structure, control is convenient, safeguards that cost is low easily; Can enlarge capacity, realize high-speed and the high voltage operation; Can realize soft start and fast braking; No-spark, advantage such as adaptive capacity to environment is strong.
Description of drawings
Fig. 1 be motor of the present invention partly cut open structural representation;
Fig. 2 is the end view of motor of the present invention.
Embodiment
Fig. 1 and Fig. 2 are a kind of variable-frequency motors that is used for excavator of the present invention, and motor comprises velometer 1, end cap 2, main shaft 3, stator 4, rotor 5, end cap 6, heat radiation motor 7, enclosing cover 8, protection network 9 and casing 10; Rotor 5 is made up of iron core, coil or sliver, rotating shaft, and rotor 5 is sleeved on the main shaft 3, becomes one with main shaft 3; Stator is made up of iron core, coil and support, and stator 4 is installed on the casing 10; The upside of casing 10 has a heat radiation motor; Enclosing cover 8 is fixed on the casing 10 by uniform fastening bolt; The two ends of described main shaft 3 are fixed on two cylinder roller bearings, and two cylinder roller bearings are sleeved on the casing 10.Heat radiation motor 7 is installed in a side of heat radiation casing, and the heat radiation casing communicates with casing 10 inside, and the output of heat radiation motor 7 links to each other with heat radiation motor 7 main shafts in the casing that dispels the heat.The both sides of electric machine main shaft 3 all are torque outputs, and the torque output of both sides has keyway and key along axial middle part, be screw thread and nut along the axial outside.Velometer 1 is installed in the enclosing cover 8, and velometer 1 is connected with teeth groove, and teeth groove is sleeved on the electric machine main shaft.A protection network 9 is housed on the casing 10, and protection network 9 is fixed on the outside of casing 10 by fastening bolt.
Specific embodiment 1: a kind of power 85kW of 4 cubic metres of frequency control turning motors, rated voltage 690V, rated current 84A, rated frequency 38Hz, rated speed 1126r/min, efficient 91%, power factor 0.9, class of insulation H.The motor case bottom is a pedestal, and its main shaft was vertical with horizontal plane after motor installed, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Specific embodiment 2: a kind of 4 cubic metres of frequency controls promote the power 290kW of motor, rated voltage 690V, rated current 290A, rated frequency 38Hz, rated speed 750r/min, efficient 92%, power factor 0.91, class of insulation F.The motor case bottom is a pedestal, and it is parallel with horizontal plane that motor installs its main shaft of back, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Specific embodiment 3: a kind of power 85kW of 4 cubic metres of frequency control movable motors, rated voltage 690V, rated current 85A, rated frequency 38Hz, rated speed 1126r/min, efficient 92%, power factor 0.91, class of insulation H.The motor case bottom is a pedestal, and it is parallel with horizontal plane that motor installs its main shaft of back, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in the casing top of motor.
Specific embodiment 4: a kind of power 85kW of 4 cubic metres of frequency controls pushing motor, rated voltage 690V, rated current 108A, rated frequency 38Hz, rated speed 1126r/min, efficient 92%, power factor 0.92, class of insulation H.It is pedestal that motor installs its bottom of shell of back, and electric machine main shaft is parallel with horizontal plane, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Specific embodiment 5: a kind of power 180kW of 10 cubic metres of frequency control turning motors, rated voltage 690V, rated current 182A, rated frequency 38Hz, rated speed 713.1r/min, efficient 94.83%, power factor 0.871, class of insulation H.The motor case bottom is a pedestal, and its main shaft was vertical with horizontal plane after motor installed, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Specific embodiment 6: a kind of 10 cubic metres of frequency controls promote the power 380kW of motor, rated voltage 690V, rated current 371A, rated frequency 36Hz, rated speed 753.6r/min, efficient 95.71%, power factor 0.895, class of insulation F.The motor case bottom is a pedestal, and it is parallel with horizontal plane that motor installs its main shaft of back, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Specific embodiment 7: a kind of power 180kW of 10 cubic metres of frequency control movable motors, rated voltage 690V, rated current 180.4A, rated frequency 36Hz, rated speed 752.6r/min, efficient 94.59%, power factor 0.883, class of insulation H.The motor case bottom is a pedestal, and it is parallel with horizontal plane that motor installs its main shaft of back, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Specific embodiment 8: a kind of power 270kW of 10 cubic metres of frequency controls pushing motor, rated voltage 690V, rated current 267.3A, rated frequency 36Hz, rated speed 752.4r/min, efficient 95.21%, power factor 0.888, class of insulation H.The motor case bottom is a pedestal, and it is parallel with horizontal plane that motor installs its main shaft of back, and 4 shoulder holes that can hold the ground connection set bolt are arranged on the pedestal, and the cooling fan of motor is installed in a side of the casing of motor.
Claims (5)
1. a variable-frequency motor that is used for excavator comprises velometer (1), end cap (2), main shaft (3), stator (4), rotor (5), end cap (6), heat radiation motor (7), enclosing cover (8), protection network (9) and casing (10); It is characterized in that: described rotor (5) is made up of iron core, coil or sliver, rotating shaft, and described rotor (5) is sleeved on the main shaft (3), becomes one with main shaft (3); Described stator (4) mainly is made up of iron core, coil and support, and described stator (4) is installed on the casing (10); The upside of described casing (10) has the heat radiation casing; Described enclosing cover (8) is fixed on the casing (10) by uniform fastening bolt; Main shaft (3) is sleeved on the casing (10) by two cylinder roller bearings.
2. the variable-frequency motor that is used for excavator according to claim 1, it is characterized in that: described heat radiation motor (7) is installed in a side of heat radiation casing, the heat radiation casing communicates with casing (10) inside, and the output of heat radiation motor (7) links to each other with heat radiation motor (7) main shaft in the casing that dispels the heat.
3. the variable-frequency motor that is used for excavator according to claim 1 is characterized in that: the both sides of described electric machine main shaft (3) all are torque outputs, and the torque output of both sides has keyway and key, along the axial outside nut is installed along axial middle part.
4. the variable-frequency motor that is used for excavator according to claim 1 is characterized in that: velometer (1) is installed in the described enclosing cover (8), and described velometer (1) is connected with teeth groove, and teeth groove is sleeved on the electric machine main shaft.
5. the variable-frequency motor that is used for excavator according to claim 1 is characterized in that: a protection network (9) is housed on the described casing (10), and described protection network (9) is fixed on the outside of casing (10) by fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200105506U CN201444612U (en) | 2009-02-13 | 2009-02-13 | Variable frequency motor used for digger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200105506U CN201444612U (en) | 2009-02-13 | 2009-02-13 | Variable frequency motor used for digger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444612U true CN201444612U (en) | 2010-04-28 |
Family
ID=42549292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200105506U Expired - Lifetime CN201444612U (en) | 2009-02-13 | 2009-02-13 | Variable frequency motor used for digger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444612U (en) |
-
2009
- 2009-02-13 CN CN2009200105506U patent/CN201444612U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100428 |