CN211974842U

CN211974842U - Electromagnetic brake assembly

Info

Publication number: CN211974842U
Application number: CN201921873186.6U
Authority: CN
Inventors: 林珍珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-03
Filing date: 2019-11-03
Publication date: 2020-11-20
Anticipated expiration: 2029-11-03

Abstract

The utility model mainly relates to an electromagnetic brake assembly, which comprises a cylindrical shell, wherein the shell is provided with a top cover, and an electromagnet, a brake spring and a metal brake disc are arranged in the shell; the electromagnet is fixed at the bottom of the top cover; the brake disc is arranged below the electromagnet and plays a role of an armature, a plurality of sliding grooves are uniformly arrayed on the circumference of the side face of the brake disc, a plurality of guide posts corresponding to the sliding grooves are arranged on the shell wall in the shell, and the sliding grooves are sleeved on the guide posts and can slide up and down. When the utility model works, the metal brake disc can be integrally and smoothly upwards attracted by the electromagnet; in addition, when the electromagnetic brake system is in a brake state, the guide columns are matched with the sliding grooves, so that the metal brake disc is not driven by the brake disc to rotate, the safety factor of the electromagnetic brake is ensured, and the electromagnetic brake system has a positive technical effect.

Description

Electromagnetic brake assembly

Technical Field

The utility model relates to a rolling door machine technical field especially relates to an electromagnetic brake assembly.

Background

Most of the existing door rolling machines are provided with electromagnetic brake systems, and the principle is as follows: one end of a rotating shaft of the motor is connected with the reduction gear box, the other end of the rotating shaft is fixed with a brake disc, when the motor is electrified and works, the electromagnet is also electrified and works to attract the metal brake disc, the brake disc is separated from the brake disc, the brake is opened, and the motor runs smoothly; when the power is cut off and the work is stopped, the metal brake disc is pressed on the brake disc under the action of the brake spring to play a role in braking, and the motor stops working.

Therefore, in order to ensure the normal operation of the door rolling machine, a brake clearance is arranged between the electromagnet and the metal brake disc in the electromagnetic brake system so as to ensure that the door rolling machine can break away from the brake in time during operation. Electromagnet and metal brake disc among the present rolling door machine braking system rely on a thinner metal pole to support, and in the inside through-hole of brake spring was worn to be equipped with by the metal pole, rock easily during the brake, the downside that causes the metal brake disc did not wholly break away from the brake disc, and the metal brake disc still is in half friction state with the brake disc this moment, and the motor circular telegram during operation, the resistance grow generates heat easily and causes the damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, an electromagnetic brake assembly is provided.

The utility model provides a technical scheme that its technique was taken is: an electromagnetic brake assembly comprises a cylindrical shell, wherein a top cover is arranged above the inside of the shell, the top cover is provided with bosses, and fixing holes are uniformly formed in the circumferences of the bosses; an electromagnet, a brake spring and a metal brake disc are arranged inside the shell; the electromagnet comprises an iron core and a coil, the brake spring is arranged in a containing hole in the center of the iron core and pushes against the metal brake disc, and the top of the electromagnet is fixed at the bottom of the top cover; the brake disc is arranged below the electromagnet and plays a role of an armature, the upper side surface of the brake disc is attracted and contacted with the electromagnet when the brake disc is attracted by the electromagnet, and the lower side surface of the brake disc can be in frictional contact with a brake disc of the door rolling machine under the elastic pushing action of a brake spring when the brake disc is not attracted by the electromagnet; the side surface circumference of the brake disc is uniformly arrayed with a plurality of sliding chutes which are vertically distributed, the shell wall inside the shell is provided with a plurality of guide posts corresponding to the sliding chutes, and the sliding chutes are sleeved on the guide posts and can slide up and down; and a plurality of screw holes are uniformly distributed on the circumference of the shell wall at the bottom of the shell.

Furthermore, the number of the fixing holes is 4.

Further, the sliding grooves are provided with 3 or 4 sliding grooves.

Furthermore, the screw hole is provided with 6.

Furthermore, a notch is also arranged on the shell wall at the top of the shell and used as a coil outlet of the electromagnet.

The utility model has the advantages that: when the brake disc works, the metal brake disc can be integrally and smoothly attracted upwards by the electromagnet; in addition, when the electromagnetic brake system is in a brake state, the guide columns are matched with the sliding grooves, so that the metal brake disc is braked on the brake disc and is not loosened, and the safety factor of the electromagnetic brake is ensured.

Drawings

Fig. 1 is a schematic perspective view of the housing of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

FIG. 3 is a schematic sectional view A-A of FIG. 2.

Fig. 4 is a schematic structural diagram of the metal brake disc of the present invention.

FIG. 5 is a schematic sectional view of the structure of FIG. 4B-B.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1-5, the embodiment of the present invention: an electromagnetic brake assembly comprises a cylindrical shell 1, a top cover 2 is arranged above the inside of the shell 1, a boss 3 is arranged on the top cover 2, and fixing holes 4 are uniformly formed in the circumference of the boss 3; an electromagnet 5, a brake spring 6 and a metal brake disc 7 are arranged inside the shell 1; the electromagnet 5 comprises an iron core 8 and a coil 9, the brake spring 6 is arranged in a containing hole 10 in the center of the iron core 8 and pushes against a metal brake disc 7, and the top of the electromagnet 5 is fixed at the bottom of the top cover 2; the brake disc 7 is arranged below the electromagnet 5 and plays a role of an armature, the upper side surface of the brake disc 7 is attracted and contacted with the electromagnet 5 when being attracted by the electromagnet 5, and the lower side surface of the brake disc 7 can be in frictional contact with a brake disc 11 of the door rolling machine under the elastic force pushing action of a brake spring 6 when not being attracted by the electromagnet 5; the brake disc 7 is uniformly arrayed with a plurality of sliding grooves 12 on the circumference of the side surface thereof, the sliding grooves 12 are vertically distributed, a plurality of guide posts 13 corresponding to the sliding grooves 12 are arranged on the shell wall in the shell 1, and the sliding grooves 12 are sleeved on the guide posts 13 and can slide up and down; a plurality of screw holes 14 are uniformly distributed on the circumference of the shell wall at the bottom of the shell 1.

In this embodiment, there are 4 fixing holes 4.

In this embodiment, there are 3 or 4 sliding grooves 12.

In this embodiment, there are 6 screw holes 14.

In this embodiment, a notch 15 is further disposed on the wall of the top of the housing 1, and the notch 15 is used as a coil outlet of the electromagnet 8.

When implementing, will the utility model discloses an electromagnetic brake assembly and motor 16 fixed connection, set screw 17 passes through screw 14 and fixes casing 1 in motor 16's top, and reduction gear box is connected to 18 lower extremes of motor 16's pivot, its upper end fixed brake disc 11. When the motor 16 and the electromagnet 5 are electrified to work, the electromagnet 5 works to attract the metal brake disc 7, the metal brake disc 7 is separated from the brake disc 11, the brake is opened, and the motor 16 runs smoothly. When the motor 16 and the electromagnet 5 are powered off and stop working, the metal brake disc 7 is pressed on the brake disc 11 under the action of the elastic force of the brake spring 6 to play a braking role, and the motor 16 stops working. When the motor 16 stops working, the weight of the rolling door can drive the gear in the gear box and the rotating shaft 18 of the motor, so that the brake disc 11 at the upper end of the rotating shaft 18 can also be driven, at the moment, the guide post 13 is matched with the sliding groove 12, the metal brake disc 7 cannot rotate in the shell 1, the brake disc 11 cannot rotate under the pressing of the metal brake disc 7, the rotating shaft 18 can be prevented from being reversed by the dead weight of the rolling door, the safety coefficient of electromagnetic braking is improved, and the safe operation of the rolling door machine and the rolling door is ensured.

As described above, the present invention is only the embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. An electromagnetic brake assembly, characterized in that: the device comprises a cylindrical shell, wherein a top cover is arranged above the inside of the shell, the top cover is provided with bosses, and fixing holes are uniformly formed in the circumferences of the bosses; an electromagnet, a brake spring and a metal brake disc are arranged inside the shell; the top of the electromagnet is fixed at the bottom of the top cover, and the electromagnet comprises an iron core and a coil; the brake spring is arranged in a containing hole in the center of the iron core and pushes the brake spring downwards to a metal brake disc, the brake disc is in a cylindrical cake shape and is arranged below the electromagnet and plays a role of an armature, the upper side surface of the brake disc is attracted and contacted with the electromagnet when the brake disc is attracted by the electromagnet, and the lower side surface of the brake disc can be in frictional contact with a brake disc of the door rolling machine under the elastic force pushing action of the brake spring when the brake disc is not attracted by the electromagnet; the side surface circumference of the brake disc is uniformly arrayed with a plurality of sliding chutes which are vertically distributed, the shell wall inside the shell is provided with a plurality of guide posts corresponding to the sliding chutes, and the sliding chutes are sleeved on the guide posts and can slide up and down; and a plurality of screw holes are uniformly distributed on the circumference of the shell wall at the bottom of the shell.

2. An electromagnetic brake assembly as defined in claim 1, wherein: the fixed orifices are provided with 4.

3. An electromagnetic brake assembly as defined in claim 1, wherein: the sliding groove is provided with 3 or 4 sliding grooves.

4. An electromagnetic brake assembly as defined in claim 1, wherein: the screw hole is equipped with 6.

5. An electromagnetic brake assembly as defined in claim 1, wherein: and a notch is also arranged on the shell wall at the top of the shell and is used as a coil outlet of the electromagnet.