Background technique
Prior art discloses a kind of couplings with soft starting and of force booster type of realizing soft start for load-carrying working machine, referring to application number be specifically: 98100835.6 are called the Chinese patent literature of " modifying device of couplings with soft starting and of force booster type ", as shown in Figure 1, this coupling is mainly by sleeve 1, end cap 2, rotor 3, the blade 4 and the multiple steel ball 5 that are in transmission connection with rotor 3 form, two end cap 2 is installed in respectively sleeve 1 two ends, end cap 2 and sleeve 1 are sheathed on rotor 3 and all can rotate with respect to rotor 3, the end cap 2 on right side is connected with heavy load transmission by coupling 6, rotating shaft and rotor 3 are in transmission connection, blade 4 is located in the annular cavity that rotor 3 and two end cap 2 and sleeve 1 form, in inner chamber between adjacent two blades 4, establish multiple steel balls 5, blade 4 can make to arrive in advance blade 4 and sleeve 1 inwall steel ball 5 is automatically squeezed out this position along the side of blade in the time of the steel ball extruding being subject to below, the position thereby disengaging maximum is squeezed, and the position at original steel ball place substitutes the steel ball by below, realize the conversion of steel ball stress, the final steel ball overwhelming majority is close to inner walls, drive heavy duty to rotate by the frictional force between steel ball and sleeve lining, thereby can reach the Security of heavily loaded frequent starting and the object of anti-stall.
But due to long-time use, the steel ball that is positioned at inner chamber can wear and tear and produce comminuted steel shot because friction is stressed, the inner chamber that these comminuted steel shots can be gone here and there between other blades destroys dynamic balancing, makes equipment produce vibration, brings potential safety hazard, in addition, because comminuted steel shot moisture absorption is stronger, cause environment moist in inner chamber, make the easy corrosion of steel ball and produce block fixed, thereby lose the flexible effect starting, and cause potential safety hazard.
Model utility content
The utility model provides a kind of flexible starting torque Coupler modifying device, be used for overcoming defect of the prior art, avoid comminuted steel shot play and produce the vibration equipment causing because dynamic balancing is unbalance, improve the safety reliability of equipment, extend the working life of flexible starting torque Coupler.
The utility model provides a kind of flexible starting torque Coupler modifying device, comprises rotor and is sleeved on described epitrochanterian housing;
Between described enclosure interior and described rotor, be jointly enclosed to form an annular cavity;
Between rotor and described housing, be rotationally connected;
Described rotor upper driving is connected with multiple blades, and described annular cavity is divided into multiple fan-shaped chambeies by described blade, in each described fan-shaped chamber, is all placed with multiple steel balls;
On described annular cavity wall at described housing during in rotary state and described steel ball contact position be provided with at least one groove;
Described groove diapire is provided with multiple powder outlets;
The width of described powder outlet is less than or equal to the width of described groove, and the width of described groove is less than the diameter of described steel ball.
The flexible starting torque Coupler modifying device that the utility model provides, after electric motor starting, rotate by speed reducer output shaft rotor driven, rotor banding moving vane rotates in housing, when initial state rotating speed is slower, steel ball is positioned near rotor, along with the rotating speed of rotor and blade raises, steel ball is progressively close to annular cavity sidewall under the effect of centrifugal force, in the time that rotating speed is enough high, drive housing to rotate by the frictional force between steel ball and annular cavity wall, housing rotates by the dynamic load of coupling band; The comminuted steel shot producing after worn steel ball and the movement locus of steel ball are roughly the same, therefore in the time that housing rotates, with the position that housing internal chamber wall contacts, groove is set at steel ball, steel ball can be discharged to inner chamber outside by the powder outlet being located on groove because of fricative comminuted steel shot, thereby reduce the dynamic balancing balance phenomenon producing because of comminuted steel shot, to reduce the vibration producing because dynamic balancing is unbalance, improve the safety reliability of equipment; And reduce and be consolidated into the phenomenon of piece because the fricative comminuted steel shot of steel ball makes steel ball, avoid losing the generation of flexible startup effect phenomenon, and then improve working life and the reliability of modifying device.
Embodiment
As shown in Fig. 2-6, the utility model provides a kind of flexible starting torque Coupler modifying device, comprises rotor 3 and is sleeved on the housing 10 on rotor 3; Between housing 10 inside and rotor 3, be jointly enclosed to form an annular cavity; Between rotor 3 and housing 10, be rotationally connected; Rotor 3 upper drivings are connected with multiple blades 4, and annular cavity is divided into multiple fan-shaped chambeies by blade 4, are all placed with multiple steel balls 5 in each fan-shaped chamber; On annular cavity wall at housing 10 during in rotary state and steel ball 5 contact positions be provided with at least one groove 8; Groove diapire is provided with multiple powder outlets 9; The width of powder outlet 9 is less than or equal to the width of groove 8, and the width of groove 8 is less than the diameter of steel ball 5.
If the diameter 6mm of steel ball, the optional 5mm of width of groove 8, the optional 4mm of width of powder outlet 9.The diameter that the width of groove 8 is less than steel ball 5 ensures that steel ball 5 is not stuck in groove 8, and the width of powder outlet 9 is less than or equal to the width of groove 8, is certainly also less than the diameter of steel ball 5, prevents that steel ball 5 from powder outlet 9 out.
The flexible starting torque Coupler modifying device that the utility model provides, after electric motor starting, output revolving shaft 71 rotor drivens 3 by speed reducer 7 rotate, rotor 3 is with moving vane 4 in the interior rotation of housing 10, when initial state rotating speed is slower, steel ball 5 is positioned near rotor 3, along with the rotating speed of rotor 3 and blade 4 raises, steel ball 5 is progressively close away from the sidewall of rotating center to annular cavity under the effect of moment of inertia, in the time that rotating speed is enough high, drive housing 10 to rotate by the frictional force between steel ball 5 and annular cavity wall, housing 10 is with dynamic load to rotate by coupling 6; Long-time use, steel ball 5 produces wearing and tearing, the comminuted steel shot producing after steel ball 5 wearing and tearing and the movement locus of steel ball are roughly the same, therefore in the time that housing 10 rotates, the position contacting with inner walls at steel ball 5 arranges groove 8, and steel ball 5 is gathered in groove 8 because of fricative comminuted steel shot, finally can be discharged to inner chamber outside by the powder outlet 9 being located on groove 8, thereby reduce the dynamic balancing balance phenomenon producing because of comminuted steel shot, to reduce the vibration producing because dynamic balancing is unbalance, improve the safety reliability of equipment; And reduce and be consolidated into the phenomenon of piece because the fricative comminuted steel shot of steel ball makes steel ball, avoid losing the generation of flexible startup effect phenomenon, and then improve working life and the reliability of modifying device.
In such scheme, rotor 3 and blade 4 are installed for convenience, housing 10 comprises sleeve 1 and is fixed on the end cap 2 at sleeve 1 two ends; Rotor 3 is all rotationally connected with end cap 2.Specifically can be dynamically connected by bearing rotary.
Embodiment one as such scheme:
As shown in Figure 3, Figure 4, groove 8 ringwise, and is located on end cap 2 inwalls.
Further improvement as embodiment one:
As shown in Figure 3, Figure 4, groove 8 is close to sleeve 1 inwall setting.In load operation conditions, steel ball and comminuted steel shot are subject to centrifugal action, and the comminuted steel shot overwhelming majority concentrates on the inwall place that is adjacent to sleeve 1, therefore on end cap 2, are close to sleeve 1 inwall place and groove 8 is set is convenient to the discharge of comminuted steel shot.
Embodiment two as such scheme:
As shown in Figure 5, Figure 6, groove 8 is located on sleeve 1 inwall.Because the comminuted steel shot overwhelming majority of steel ball and steel ball generation concentrates on the inwall place that is adjacent to sleeve 1, therefore with respect to embodiment one, groove 8 is set on sleeve 1 inwall and is more conducive to comminuted steel shot discharge.The shape of groove 8 can be lineal shape, also can be curvilinerar figure, and such as helix or irregular curve, the cross section of groove 8 takes the shape of the letter U, and is preferably fillet surface, reduces the friction of wedge angle part to steel ball 5, and steel ball 5 can smooth and easy leaving when through groove 8.As shown in Figure 7, groove 8 arranges ringwise and around sleeve 1 inwall for one week.
Improvement further as embodiment two:
As shown in Figure 5, Figure 6, groove 8 is more than two, and uniform along sleeve 1 inwall one week.Being illustrated as two, can also be three, four or five etc., is provided with like this and is beneficial to dynamic balancing, and prevent the vibration causing because dynamic balancing is unbalance.
Further improvement as embodiment two:
As shown in Figure 5, Figure 6, groove 8 arranges along sleeve axis direction.Be easy to manufacturing, reduce manufacture cost.
On the basis of above-described embodiment:
As shown in Fig. 3-6, powder outlet 9 is distributed on groove 8.Be provided with like this and be beneficial to dynamic balancing, and prevent the vibration causing because dynamic balancing is unbalance.
On the basis of above-described embodiment:
Modifying device also comprises that one for housing being enclosed to safety cover therein, and safety cover bottom is provided with clean-up port, and clean-up port is provided with switch gate.Safety cover and switch gate do not show in the drawings; housing inner chamber is inner, and external atmospheric pressure is larger relatively; comminuted steel shot is also subject to centrifugal action in movement process; after spraying from powder outlet; enter in safety cover, after operation a period of time, by switch gate, the comminuted steel shot in safety cover is cleared; prevent comminuted steel shot through powder outlet directly discharged to pollution of atmosphere environment
Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technological scheme that still can record aforementioned each embodiment is modified, or some or all of technical characteristics is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of the each embodiment's technological scheme of the utility model.