CN2730008Y

CN2730008Y - Powder device of motor

Info

Publication number: CN2730008Y
Application number: CNU2004200883213U
Authority: CN
Inventors: 胡济荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-14
Filing date: 2004-09-14
Publication date: 2005-09-28
Anticipated expiration: 2014-09-14
Also published as: WO2006029551A1

Abstract

The utility model discloses a powder device of the motor, comprising a motor (4), a shaft coupling (11), a clutch (33), a front axle assembly (31), a belt-type stepless speed change mechanism (27), a gear reducer (29) and an output chain wheel (30). The above components are connected in sequence. After the structure is adopted, the output efficiency of the motor can be effectively improved, and the noise is reduced, and the vibration is relieved. The defect that the current load of the controller is oversize when the motor climbs can be effectively avoided.

Description

Motor power device

Technical field

The utility model relates to a kind of power set, particularly relates to a kind of motor power device.

Background technology

Present motor power device is generally done following arrangement: motor outputs to reducing gear, and reducing gear is connected to the traction element of dynamic power machine, finishes the power output of motor with this.Wherein, reducing gear is gear reduction generally speaking, and its noise and vibratility in the gear reduction process is very big.The employing belt slows down, its noise and vibratility alleviate greatly, but driving wheel and driven pulley need certain spacing in the belt transmission, and there is skidding in belt transmission, so the belt deceleration transmission exists the deceleration spatial dimension to require the problem big, that transmission efficiency is low.In addition, motor is in startup, climbing process, and motor speed reduces, and the output torque increases, and the controller current loading is excessive, and this moment, the delivery efficiency of motor also can die-off; Simultaneously, this has also influenced the electromotor overload scope.In the occasion that often relates to large torque output, the controller current loading is excessive and burn, very cause and burn that motor, the motor delivery efficiency is low, motor bears overload level are too narrow just to become the important restraining factors that restriction above-mentioned motor output device, especially motor use.

The utility model content

Technical problem to be solved in the utility model provides a kind of delivery efficiency height, vibrations are light, little, the slight overload of noise can steadily be exported, the motor power device of compact conformation.

The technical scheme that the utility model technical solution problem is proposed comprises motor, front axle, belt-type stepless speed change mechanism, gear reduction unit, output chain gear, and above-mentioned parts connect successively.

As further improvement of the utility model, this motor power device is connected with shaft coupling and clutch in turn between motor and front axle.

Further improve as the utility model, the stator of the motor in this motor power device is by being bolted on the motor field frame; One end of motor output shaft is arranged on the motor back cover by bearing, and the other end is arranged on the motor field frame by bearing.

After adopting said structure, when motor start-up, motor idle running.Along with the raising of motor speed, clutch closes, and motor begins to drive front axle and rotates.Owing to be non-loaded startup, motor can enter the high efficiency section from inefficient section very soon when initial the startup, improved transmission efficiency.The dynamic power machine that adopts said structure is in the normal operation process, and when the external world needed bigger output torque, motor began to reduce than the large torque rotating speed for output.When the rotating speed of current driving-disc assembly began to reduce, the direction that ball and driving disc spacing pressing Moving plate begin vertically dish outside leaving driving disc spacing pressing moved, driving belt begin to diminish around diameter; A movable card begin to move to fixing card under the effect of spring force in this moment clutch drived disk assy, and driving belt begins to become big around diameter on clutch drived disk assy, and the gearratio of whole transmission begins to increase, and the rotating speed of clutch plate begins reduction.Because the speed change of this belt-type stepless speed change mechanism is automatically, thereby the landing that has alleviated motor speed greatly avoids the motor operation to slip into inefficient section, thereby has improved the delivery efficiency of motor on the whole.Simultaneously, the speed change of this belt-type stepless speed change mechanism is progressive, has eliminated directly by the defective of motor reduction of speed generation than big bang.In addition, by the automatic reduction of speed of belt-type stepless speed change mechanism, when also having avoided directly passing through the output of motor reduction of speed realization large torque, the defective that the controller current loading is excessive.

Also have, in the process of working long hours, this utility model can make motor under the state that keeps output rated power, and the slewing range of dynamic power machine broadens, and at this moment, the output torque becomes linear inverse proportion to change with rotating speed, has guaranteed the stationarity of vehicle '.Under the condition of motor NOL normal overload 10%, this belt-type stepless speed change mechanism also can guarantee to export torque and become linear inverse proportion to change with rotating speed.

Therefore, the employing of whole utility model scheme help improving on the whole motor operating efficiency, alleviate vibrations, the excessive defective of controller current loading when eliminating large torque output; And can when motor start-up, realize non-loaded startup, make motor very fast cross inefficient section, realize that greater efficiency starts.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the delivery efficiency curve chart of motor.

Fig. 3 is driving belt gearratio and motor speed graph of a relation.

Embodiment

Shown in Figure 1, be the specific embodiments of the utility model motor power device, it comprises motor 4, shaft coupling 11, clutch 33, front axle 31, belt-type stepless speed change mechanism 27, gear reduction unit 29.

Wherein, described motor 4 is made up of motor field frame 5, motor back cover 3, motor stator 6, motor rotor 7, motor output shaft 1, bearing 2,9.Motor stator 6, motor rotor 7 are in motor field frame 5, motor stator 6 is fixed on the motor field frame 5 by the seam on the motor field frame 5 by bolt 8, motor output shaft 1 is by bearing 2 and bearing 9 location, the one end is arranged on the motor back cover 3, the other end is arranged on the motor field frame 5, and stretches out from the end face of motor casing 5.

Motor output shaft 1 is fixed together with shaft coupling cover 12, and shaft coupling shell 10 is fixed on the motor field frame 5.

Clutch hoof piece 35 usefulness bolts 34 are fixed on the shaft coupling cover 12, and clutch drive plate 32 is fixed on an end of front axle 31.

Described front axle 31 is installed in the transmission case body assembly 13, and front wheel driving disc assembly 15, nut 19 are housed on front axle 31.

Described belt-type stepless speed change mechanism 39 comprises front wheel driving disc assembly 15, driving belt 21, clutch drived disk assy 23.

Described front wheel driving disc assembly 15 is made up of the outer dish 16 of driving disc spacing pressing, sleeve 20, driving disc spacing pressing Moving plate 17, ball 18, ball guard shield 14.Wherein, driving disc spacing pressing coils 16 outward and is fixed on the front axle 31 and with rotation therewith, and driving disc spacing pressing Moving plate 17, ball 18 constitute speed adjusting gear, can move axially.Because driving disc spacing pressing Moving plate 17 and ball 18 can move axially with the rotary speed of motor 4, thus can change driving belt 21 around diameter.

Described clutch drived disk assy 23 comprises spring 36, Moving plate face 37 and fixing card 38.

Driving belt 21 1 ends are contained on the front wheel driving disc assembly 15, and the other end is contained on the clutch drived disk assy 23.Clutch drived disk assy 23 is contained on the driving shaft 25, and its outer end is fastening with jam nut 24.When requiring driving shaft 25 rotating speeds low, belt transmission requires bigger gearratio, and this moment, clutch drived disk assy 23 was pressed to fixedly card 38 to Moving plate face 37 by self spring 36 pressure, thereby makes driving belt at clutch drived disk assy 23 bigger around diameter.When motor 4 rotating speeds improve, the ball 18 in the front wheel driving disc assembly 15 drives driving disc spacing pressing Moving plate 17 dish 16 to driving disc spacing pressing outside and moves axially under action of centrifugal force, and driving belt 21 begins to become greatly around diameter on front wheel driving disc assembly 15.Because the length of driving belt 21 itself is constant, so the elastic force that driving belt 21 begins to force movable in a clutch drived disk assy card to overcome spring 36 outwards moves vertically, driving belt 21 on clutch drived disk assy 23 begin to diminish around diameter, so the belt transmission ratio begins to diminish, the rotating speed of clutch plate 26 begins to improve.

Driving shaft 25 is contained on the transmission case body assembly 13, and driving shaft 25 links together with gear reduction unit 29, and by gear reduction unit 29 outputs; In addition, driving shaft 25 is arranged in parallel with front axle 31.

Gear wheel 28 is fitted on the output shaft 22, and output shaft 22 is contained on the transmission case body assembly 13, and output shaft 22 is arranged in parallel with driving shaft 25, front axle 31; The output of output shaft 22 is equipped with output chain gear 30.

Connect DC power supply switch, rotate the accelerator handle, motor 4 rotates under controller action, motor output shaft 1 drives clutch 33 rotations by shaft coupling 11, clutch 33 drives front axle 31, front wheel driving disc assembly 15 rotates together, and be transferred to clutch drived disk assy 23 and driving shaft 25 by driving belt 21, and driving shaft 25 is meshed and transmitted to output shaft 22 by gear wheel 28, and output shaft 22 drives output chain gears 30 and rotates together.

Shown in Figure 2, be the delivery efficiency curve chart of motor.When motor started at first, its delivery efficiency was very low.In order to make motor cross inefficient section rapidly, the utility model has added clutch 33 in technical scheme.Clutch 33 is in off-state with 31 on front axle when motor starts at first, when promptly motor 4 starts, and motor 4 idle running.Along with the raising of motor 4 rotating speeds, clutch 33 closes, and motor begins to drive front axle 31 and rotates.Owing to be non-loaded startup, motor can enter the high efficiency section from inefficient section very soon when initial the startup, promptly move in rotation speed n 1～n2 section.Wherein n1, n2 determine according to the performance of motor itself.

The dynamic power machine that adopts said structure is in the normal operation process, and when the external world needed bigger output torque, motor 4 began to reduce than the large torque rotating speed for output.When the rotating speed of current driving-disc assembly 15 began to reduce, 17 beginnings of ball 18 and driving disc spacing pressing Moving plate were coiled 16 direction vertically and are moved to leave driving disc spacing pressing outside, driving belt 21 begin to diminish around diameter; A movable card 37 begins to move to fixing card 38 under the effect of spring 36 in the clutch drived disk assy 23 at this moment, driving belt 21 begins to become big around diameter on clutch drived disk assy 23, the gearratio of whole transmission begins to increase, and the rotating speed of clutch plate 26 begins to reduce.Above-mentioned speed change is automatically, thereby the landing that has alleviated motor 4 rotating speeds greatly avoids motor 4 operations to slip into inefficient section.

Shown in Figure 3, be driving belt gearratio and motor speed graph of a relation.For the output that makes total steady, making the velocity of rotation of the variation of gearratio of driving belt 21 and motor 4 change adapts, can to the spacing of the quality of ball 18, driving disc spacing pressing Moving plate 17 and the outer dish 16 of driving disc spacing pressing, driving belt 21 on the front wheel driving disc assembly 15 at first around the spring 36 on diameter, the clutch drived disk assy 23, Moving plate face 37 and fixedly spacing, driving belt 21 the adjusting around diameter at first on clutch drived disk assy 23 of card 38, make that the variation of gearratio of driving belt 21 is corresponding just with the change in rotational speed of motor 4.

Claims

1, a kind of motor power device, comprise motor (4), gear reduction unit (29), output chain gear (30), above-mentioned parts connect successively, it is characterized in that: also be connected with front axle (31), belt-type stepless speed change mechanism (39) between motor (4) and gear reduction unit (29) in turn.

2, motor power device according to claim 1 is characterized in that: also be connected with shaft coupling (11) and clutch (33) between motor (4) and front axle (31) in turn.

3, motor power device according to claim 1 and 2 is characterized in that: the stator (6) of described motor (4) is fixed on the motor field frame (5) by bolt (8); One end of motor output shaft (1) is arranged on the motor back cover (3) by bearing (2), and the other end is arranged on the motor field frame (5) by bearing (9).