CN2199361Y

CN2199361Y - Electromagnetic brake

Info

Publication number: CN2199361Y
Application number: CN 94224917
Authority: CN
Inventors: 彭宇光
Original assignee: GUANGDE ELECTRIC APPLIANCES FACTORY
Current assignee: GUANGDE ELECTRIC APPLIANCES FACTORY
Priority date: 1994-07-29
Filing date: 1994-07-29
Publication date: 1995-05-31
Anticipated expiration: 2004-07-29

Abstract

The utility model provides an electromagnetic brake, and the structure of the utility model is connected with a motor. The utility model comprises a magnetic yoke (3), an excitation coil (5), a friction plate (6), an armature iron (7) and a spring (2). The utility model is characterized in that the utility model also comprises an annular inner block (1) arranged in the centre hole of the magnetic yoke (3), a regulated annular outer block (10) arranged at the outer side of a connector (8), and a spline sleeve (9) clamped between the inner block (1) and the regulated annular outside block (10); the connector (8) is sheathed on the splinesleeve (9), and the connector (8) is connected with the spline sleeve (9); the spring (2) is a cylindrical compress screw spring, the left end of the spring is axially positioned by the inner block (1), the right end of the spring is bunted against the connector (8), and the armature iron (7) directly fixed on the connector (8) can be reset.

Description

Electromagnetic brake

The utility model relates on a kind of structure and to be connected the device that is used to control mechanical energy with motor, specifically the dry type monolithic energising electromagnetic brake on one one kinds of rotor spindle noses that are set in motor.

The early stage DDZ1 series dry type monolithic energising electromagnetic brake of producing (hereinafter to be referred as DDZ1 series break) of our factory mainly by be installed on the electric motor end cap in be provided with field coil yoke, be embedded the friction plate on the yoke end face, armature, spring and the connection of being fixed on the rotor axis of electric constitute.Find that in use there is following some deficiency in DDZ1 series break: 1, described spring is a kind of the same board-like curved spring of conventional pads that is similar to, and a rivet clasp of this curved spring is on connecting, and the other end rivet clasp is decided on the armature.Because the elastic deformation amount of this curved spring is less, so the working gas gap of break is less, has only 0.2mm～0.4mm, again because the rotor of motor all has certain play, so be difficult to the working gas gap of break is adjusted to the scope of regulation, usually cause break not work reliably.2, be that singly-bound is connected between the connection of DDZ1 series break and the rotor axis of electric, because connecting the non-magnet material that must adopt as aluminum alloy one class makes, therefore intensity is lower, and in frequent braking process, the keyway of connection is impacted and distortion even damage by the braking of moment easily.3, in use must wear and tear owing to friction plate, so need often to adjust air gap, and the connection of DDZ1 series break axially by a screw on rotor axis of electric, so the air gap adjustment is very difficult, especially the user is more difficult in the working site adjustment.

In view of there is above-mentioned deficiency in prior art, the purpose of this utility model provides a kind of modified model dry type monolithic energising electromagnetic brake of reliable operation, and it has working gas gap wide ranges, long service life, and Installation and Debugging are easy to advantage.

Another purpose of the present utility model provides a kind of working gas gap and adjusts easy dry type monolithic energising electromagnetic brake.

The utility model realize the above-mentioned first purpose technical solution comprise be installed on that motor terminal covers in be provided with field coil yoke, be embedded friction plate, armature, spring and connection on the yoke end face, it is characterized in that:

A, also comprise the annular internal stop that is located in the yoke center hole, be located at the annular adjustable outer baffle block that connects the outside and be clipped in internal stop and adjustable outer baffle block in the middle of spline housing;

B, described coupling sleeve between the two by splined, are provided with the keyway that connects with rotor axis of electric in the endoporus of spline housing on spline housing;

C, described spring are a kind of cylindrical compression helical spring, and this spring also is located in the center hole of yoke, and its left end is by the internal stop axially locating, and right-hand member is pushing and connecting, and the armature that is fixed in the connection is separated with friction plate.

The utility model realizes that above-mentioned another purpose technical solution is characterised in that described adjustable outer baffle block is made of outer baffle block and the air gap adjusting screw that is located on the outer baffle block edge, the head of described air gap adjusting screw withstands on the right side of connection, and turning between air gap adjusting screw can regulate friction plate and the armature distance is described working gas gap.

The utility model has following outstanding advantage than prior art.

1, replaced the board-like curved spring that armature is resetted with the cylindrical compression helical spring, make the working gas gap scope expand to 0.2mm～3mm by 0.2mm～0.4mm, thereby reduced the adjustment difficulty of working gas gap, increased substantially the reliability of work;

2, set up a spline housing, directly connect connecting in the prior art with the rotor axis of electric singly-bound, be modified into and connect and the spline housing splined, connect with the rotor axis of electric singly-bound by spline housing again, thereby eliminated this weak tie-point (because spline housing does not directly contact with armature, can make of the higher steel of intensity), its anti-braking impact force is improved significantly;

3, on the basis of having expanded the working gas gap scope, improved the working gas gap controlling mechanism again, promptly used the air gap adjusting screw to regulate working gas gap, thereby make working gas gap adjusting work become more easy, especially the user regulates in the working site, and described effect is then more remarkable.

Below in conjunction with accompanying drawing and an optimum implementation the utility model is explained in further detail.

Description of drawings:

Figure of description is the structural representation of a most preferred embodiment of the present utility model; Demonstrate concrete structure of the present utility model and user mode among the figure simultaneously; Double dot dash line is shown among the figure is partial structurtes with the motor of the utility model coupling.

Embodiment

Referring to accompanying drawing, yoke 3 and establish field coil 15 within it and be embedded friction plate 6 on yoke 3 end faces and utilize known technology and implement with reference to accompanying drawing.

With reference to accompanying drawing, from left to right be provided with annular internal stop 1, spline housing 9 and adjustable outer baffle block 10 in the center hole of yoke 3 successively; This is adjustable, and outer baffle block 10 is made of outer baffle block 10A and the air gap adjusting screw 10B that is located on the described outer baffle block 10A edge.

Referring to accompanying drawing, cylindrical compression helical spring 2 also is located in the center hole of yoke 3, the center hole Spielpassung of its external diameter and yoke 3; Cylinder-shaped compression spring 2 is clipped in internal stop 1 and connects between 8, and its left end is by internal stop 1 axially locating, and right-hand member is pushing and connecting 8; Connect 8 and be enclosed within on the spline housing 9, and adopt splined between the spline housing 9, can on spline housing 9, horizontally slip; Be provided with keyway in the center hole of spline housing 9, connect, by internal stop 1 and outer baffle block 10A it is clipped in the middle simultaneously, carry out axially locating with rotor axis of electric 13 singly-bounds; Armature 7 is being connect on 8 the interior edge face by rivet 11 rivet clasps; Under the pushing and pressing effect of cylindrical compression helical spring 2, the exterior edge face of connection 8 leans against the head of air gap adjusting screw 10B all the time, and armature 7 and friction plate 6 are separated.

Referring to accompanying drawing, during assembling, at first yoke 3 is fixed on the rear end cover 12 of motor with screw, by graphic technique other part cover is installed on the rotor shaft 13 of motor again, and carry out axially locating with two circlips for shaft 14, load onto fan blade 4 at last.Turn air gap adjusting screw 10B after installing again, air gap delta is adjusted at about 1mm.

Referring to accompanying drawing, motor is in the high speed rotating process, in case field coil 5 is connected exciting curent, 7 in armature and friction plate 6 fit together tightly, produce the friction torque that overcomes motor torque, and motor is braked and stall rapidly; After cutting off the exciting curent of field coil 5, under the elastic force effect of cylindrical compression helical spring 2, armature 7 separates immediately with friction plate 6, promptly cancels the braking to motor.

Claims

1, a kind of energising electromagnetic brake, comprise be installed on the End cover for motor (12) in be provided with field coil (5) yoke (3), be embedded the friction plate (6) on yoke (3) end face, armature (7), spring (2) and connect (8) is characterized in that:

A, also comprise the annular internal stop (1) that is located in yoke (3) center hole, be located at the annular adjustable outer baffle block (10) in connections (8) outside and be clipped in internal stop (1) and the spline housing (9) of adjustable outer baffle block (10) centre;

B, described connection (8) are enclosed within on the spline housing (9), between the two by splined, are provided with the keyway that connects with rotor axis of electric (13) in the endoporus of spline housing (9);

C, described spring (2) are a kind of cylindrical compression helical spring, this spring (2) also is located in the center hole of yoke (3), its left end is by internal stop (1) axially locating, and right-hand member is pushing connection (8), and the armature (7) that will be fixed in the connection (8) separates with friction plate (6).

2, a kind of energising electromagnetic brake according to claim 1, it is characterized in that described adjustable outer baffle block (10) is made of outer baffle block (10A) and the air gap adjusting screw (10B) that is located on outer baffle block (10A) edge, the head of described air gap adjusting screw (10B) withstands on the right side of connection (8).