A kind of constant-damping mechanism
Technical field
The utility model is used for feed drive technical field, particularly relates to a kind of constant-damping mechanism.
Background technique
In modern production, often need to use the mechanism that constant damping power can be provided, to prevent resistance excessive or too small.And traditional mechanical friction type damper torque is unstable and easily wear and tear, need periodic replacement.
Model utility content
For solving the problem, the utility model provides a kind of not only can provide constant damping force, can also according to the constant-damping mechanism of the change automatic damping adjusting power of applying working condition, this constant-damping mechanism is almost without friction, and the constant-damping mechanism without the need to regularly replacing, mechanism can be used on the occasion that need provide the functions such as constant damping power, tractive force, tension force.
The utility model solves the technological scheme that its technical problem adopts: a kind of constant-damping mechanism, comprise damping module and rocking arm module, described damping module comprises permanent-magnet damper and is contained in the output wheel on described permanent-magnet damper output shaft, described rocking arm module comprises pedestal and is contained in the rocking arm on described pedestal by rotating shaft, described permanent-magnet damper is contained on described rocking arm, and can with rocking arm around described axis of rotation.
Be further used as the improvement of technical solutions of the utility model, also comprise elastic reset part, described rocking arm can strut to side by described elastic reset part around the shaft.
Be further used as the improvement of technical solutions of the utility model, described elastic reset part is the Returnning spring that two ends act on described pedestal and rocking arm respectively.
Be further used as the improvement of technical solutions of the utility model, described pedestal is provided with mounting hole, described Returnning spring is contained in described mounting hole, offside at mounting hole on described pedestal is provided with restraining groove, described rocking arm is equipped with the limiting stopper extended in described restraining groove, the slide block propping up described limiting stopper is equipped with in the end of the inherent Returnning spring of described mounting hole.
Be further used as the improvement of technical solutions of the utility model, the outer surface of described slide block and the internal surface of described mounting hole are slidably fitted.
Be further used as the improvement of technical solutions of the utility model, be provided with the step surface propping up Returnning spring in described mounting hole, described step surface is provided with the exhaust port causing base-plates surface.
Be further used as the improvement of technical solutions of the utility model, described output wheel and permanent-magnet damper lay respectively at the both sides of rocking arm.
The beneficial effects of the utility model: this constant-damping mechanism is connected with output wheel by using permanent-magnet damper, torque due to permanent-magnet damper highly stable and almost without wearing and tearing, thus ensure that damping force is reliably constant, thus avoid the torque instability of friction damper and the problem of needs periodic replacement of wearing and tearing, and the design of rocking arm type can the unstable occasion of adaptation condition, expand equipment use scope, extend working life.Mechanism can be used on the occasion that need provide the functions such as constant damping power, tractive force, tension force.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model embodiment plan view;
Fig. 2 is the utility model embodiment plan view.
Embodiment
With reference to Fig. 1, Fig. 2, that show the concrete structure of the preferred embodiment of the utility model.The structural feature of each element of the utility model will be described in detail below, if and when being described to direction (upper and lower, left and right, before and after), be with the structure shown in Fig. 1 for reference describes, but actual user of the present utility model is to not limiting to so.
The utility model provides a kind of constant-damping mechanism, comprise damping module and rocking arm module, the output wheel 2 that described damping module comprises permanent-magnet damper 1 and is contained on described permanent-magnet damper 1 output shaft, described rocking arm module comprises pedestal 3 and is contained in the Rocker arm 5 on described pedestal 3 by rotating shaft 4, described permanent-magnet damper 1 is contained on described Rocker arm 5 by multiple screw, and described output wheel 2 and permanent-magnet damper 1 lay respectively at the both sides of Rocker arm 5, permanent-magnet damper 1 can rotate around described rotating shaft 4 with Rocker arm 5.
This constant-damping mechanism is connected with output wheel 2 by using permanent-magnet damper 1, torque due to permanent-magnet damper 1 highly stable and almost without wearing and tearing, thus ensure that damping force is reliably constant, thus avoid the torque instability of friction damper and the problem of needs periodic replacement of wearing and tearing, and the design of rocking arm type can the unstable occasion of adaptation condition, expand equipment use scope, extend working life.Mechanism can be used on the occasion that need provide the functions such as constant damping power, tractive force, tension force.
Also comprise elastic reset part, described Rocker arm 5 can 4 strut to side by described elastic reset part around the shaft.Described elastic reset part is the Returnning spring 6 that two ends act on described pedestal 3 and Rocker arm 5 respectively.Described pedestal 3 is provided with mounting hole 31, described Returnning spring 6 is contained in described mounting hole 31, described pedestal 3 is provided with restraining groove 32 at the offside of mounting hole 31, described Rocker arm 5 is equipped with the limiting stopper 7 extended in described restraining groove 32, the slide block 8 propping up described limiting stopper 7 is equipped with in the end of the inherent Returnning spring of described mounting hole 31 6.The outer surface of described slide block 8 and the internal surface of described mounting hole 31 are fitted slidably.Slide block 8 can slide in the mounting hole 31 of pedestal 3, and Rocker arm 5 toward extrapolation, by extruding limiting stopper 7, is pressed on the confined planes of pedestal 3 restraining groove 32, realizes output wheel 2 location in the height direction by the Returnning spring 6 after compression by slide block 8.When carry-out bit is equipped with fluctuation, output wheel 2 just 4 rotates to an angle around the shaft along with Rocker arm 5, thus adapts to new operating mode.
The step surface 33 propping up Returnning spring 6 is provided with in described mounting hole 31, described step surface 33 is provided with the exhaust port 34 causing pedestal 3 surface, the setting of exhaust port 34 can ensure slide block 8 in mounting hole 31 in sliding process, and the air pressure in mounting hole 31 is identical with the external world.
Certainly, the invention is not limited to above-mentioned mode of execution, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent modification or replacement are all included in the application's claim limited range.