CN201503742U

CN201503742U - Damping device for electromagnet

Info

Publication number: CN201503742U
Application number: CN2009201867070U
Authority: CN
Inventors: 陈本义; 柳跃松
Original assignee: ANHUI GUANGDECHANGLI BRAKE Co Ltd
Current assignee: ANHUI GUANGDECHANGLI BRAKE Co Ltd
Priority date: 2009-07-30
Filing date: 2009-07-30
Publication date: 2010-06-09
Anticipated expiration: 2019-07-30

Abstract

The utility model relates to a damping device for an electromagnet. An end cap is arranged outside the end cover of the electromagnet, holes are formed on the end cap and an end cover to allow the electromagnet to pass through, a piston is arranged on a movable core in a cavity between the end cap and the end cover, passages communicated with two axial end surfaces are arranged on the piston, and the cavity is filled with liquid. According to the technical scheme, in the damping device, the end cap is arranged outside the electromagnet, the movable core passes through the end cover and the end cap in sequence, the piston is arranged on the movable core in the cavity between the end cover and the end cap, the passages communicated with the two axial end surfaces are arranged on the piston, and the cavity is filled with liquid. Under the action of orifice compensation, the liquid resistance force to the piston prevents the outwards pushing action of the movable core from directly impacting the end cover and causing the end cover to generate noise; and the resistance force to the piston can be regulated by adjusting the sizes of the passages on the piston, and no interference to the outwards pushing action of the movable core in working is generated. The damping device does not require consumable materials like a damping pat and realize the free maintenance.

Description

The electromagnet damping device

Technical field

The utility model relates to the shock-damping structure of electromagnet, is specifically related to a kind of electromagnet damping device.

Background technology

The structure of existing electromagnet is to be provided with coil in tubular shell, and moving core passes coil, is provided with end cap in the tubular shell both sides, the centre bore that moving core traversing through end covers.Extrapolation action when moving core is worked can make core bump end cap and produce noise.Electromagnet is the vitals on the elevator traction machine, its specification requirement height, and noise requires little, and strict demand is arranged in national standard.At present the damping of electromagnet is general avoids moving core extrapolation the direct collision of end cap to be reached the purpose of damping with the mode that adds beam.And these dampings normally cushion the impact of moving core with beam, and noise reduction is limited, and the useful life of beam is limited, need to safeguard to change.

Summary of the invention

The purpose of this utility model provides the little damping device of a kind of noise.

For achieving the above object, this use is novel has adopted following technical scheme: a kind of electromagnet damping device, key is: described electromagnet damping device is included in electromagnet end cap arranged outside end cap, offering the hole moving core of power supply magnet on end cap and the end cap passes, moving core in the cavity between end cap and end cap is provided with a piston, piston is provided with the path of connection shaft to two end faces, filling liquid in the cavity.

As shown from the above technical solution, the utility model passes through at electromagnet arranged outside end cap, moving core passes end cap and end cap successively, on the moving core in the cavity between end cap and end cap, piston is set, be provided with on the piston connection shaft to the path of two end faces and in cavity filling liquid, utilize the effect of orifice restriction, liquid has avoided the extrapolation action of moving core directly to clash into end cap and produce noise to the resistance of piston, and the size of path just can be regulated the resistance of liquid to piston on the adjustment piston, and the extrapolation action in the time of can not working to moving core produces big interference.And this device do not need to use consumable materials such as beam, can realize non-maintaining.

Description of drawings

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

Fig. 2 is a structure of piston schematic diagram of the present utility model;

Fig. 3 is the left view of Fig. 2.

Embodiment

As Fig. 1,2, shown in 3, the utility model is provided with end cap 20 at electromagnet outside end cap 10, moving core 30 passes end cap 10 and end cap 20 successively, on the moving core 301 in the cavity between end cap 10 and end cap 20, piston 40 is set, on piston 40, be provided with connection shaft to the path 41 of two end faces and in cavity filling liquid, utilize the effect of orifice restriction, liquid has avoided the extrapolation action of moving core 20 directly to clash into end cap 30 and produce noise to the resistance of piston 40, and the size of adjusting path 41 on the piston 40 just can be regulated the resistance of liquid to piston 40, the big interference of extrapolation action generation in the time of can not working to moving core 30.And this device do not need to use consumable materials such as beam, can realize non-maintaining.

As preferred embodiment of the present utility model, connecting axle is the through hole 41 that piston center hole 42 next doors are offered vertically to the path of two end faces on the described piston 40, and liquid was to the pressure of piston 40 when the size by adjusting through hole 41 just can regulating piston 40 be moved.

Piston 40 cooperates by the external screw thread on the reducing convex shoulder 31 that internal thread 43 and moving core 30 are set at centre bore 42 and is installed on the moving core 30.

End cap 20 is the carnival hat type, and the shade limit of end cap 20 is adjacent to end cap 10, and the shade limit of end cap 20 is connected on the counterbore in end cap 10 outsides by bolt.End cap 20 is selected the carnival hat type, is the features of shape that utilizes its inner chamber, is a preferred plunger shaft shape.

Be to guarantee the sealing of the cavity between end cap 10 and the end cap 20, pass end cap 10 places and move core 30 at end cap 10 and end cap 20 junctions, moving core 30 and pass end cap 20 places sealing ring all is set, guarantee that filling liquid can not overflow.

Radially also be provided with screwed hole 44 installation holding screws 50 on the cock body of piston 40 and hold out against moving core 30 to prevent piston 40 loosening displacements.

The liquid that is full of in the seal cavity is silicone grease, silicone grease has splendid heat-resisting quantity, electrical insulating property and stability in use, volatilization is few, do not solidify and the free from corrosion characteristics of metal material contacting, meet environment for use demand of the present utility model, the filling liquid phenomenon of trickling arbitrarily also can not occur even when maintenance, need open end cap 20.

The utility model is not limited to the foregoing description, also comprise other similar execution modes, for example offer stepped hole in the electromagnet end cap central bore near a side of outer face, stepped hole is by gland envelope tieholen mouth, electromagnet passes end cap and gland successively, on the moving core in stepped hole piston is set.

Claims

1. electromagnet damping device, it is characterized in that: described electromagnet damping device is included in electromagnet end cap (10) arranged outside end cap (20), offering the hole moving core (30) of power supply magnet on end cap (20) and the end cap (10) passes, the moving core (31) that is positioned at the cavity between end cap (20) and the end cap (10) is provided with a piston (40), piston (40) is provided with the path (41) of connection shaft to two end faces, filling liquid in the cavity.

2. electromagnet damping device according to claim 1 is characterized in that: described connection the axis of the piston is the other through hole of offering vertically of piston center hole to the path (41) of two end faces.

3. electromagnet damping device according to claim 1 and 2 is characterized in that: the external screw thread that the centre bore (42) of described piston (40) is provided with on the reducing convex shoulder (31) of the moving core (30) of internal thread (43) and electromagnet cooperates.

4. electromagnet damping device according to claim 1 is characterized in that: described end cap (20) becomes the carnival hat type, and its shade limit is connected on the counterbore in end cap (10) outside by bolt.

5. electromagnet damping device according to claim 1 is characterized in that: described end cap (20) and end cap (10) junction, moving core (30) pass that end cap (10) is located and moving core (30) passes end cap (20) and locates all to be provided with sealing ring.

6. a kind of electromagnet damping device according to claim 3 is characterized in that: tapped through hole (44) radially also is set on the cock body of described piston (40) holding screw (50) is installed.

7. a kind of electromagnet Buddhist nun device according to claim 1, it is characterized in that: described liquid is silicone grease.