CN220452564U - Motor braking heat abstractor - Google Patents

Abstract

The motor braking heat dissipation device comprises a motor rear cover and a brake which is arranged on the end face of the motor rear cover and used for braking an output shaft of the motor; a heat dissipation circular plate is arranged between the motor rear cover and the brake in a collision manner, an abdication through hole is arranged in the center of the plate surface of the heat dissipation circular plate, and a plurality of heat dissipation fins are uniformly arranged on the outer wall surface of the heat dissipation circular plate in a surrounding manner; the brake outer gap cover is provided with a protective cover, the cover opening end wall of the protective cover is correspondingly connected with the motor rear cover wall through a supporting piece, the bottom of the inner cover of the protective cover is provided with a cooling fan, and the bottom surface of the protective cover is provided with cooling meshes; the heat dissipation device is convenient to refit, and has better braking heat dissipation effect by combining conduction heat dissipation and fan heat dissipation.

Description

Motor braking heat abstractor

Technical Field

The utility model relates to the technical field of electric hoist heat dissipation, in particular to a motor braking heat dissipation device.

Background

The magnetic disk brake is used as an important component in three-in-one lifting and operation of the steel wire rope electric hoist, when the lifting mechanism of the steel wire rope electric hoist is frequently started and stopped, the friction plate of the brake repeatedly rubs with the rotor or the friction plate, so that the rear end cover of the motor is overheated, heat is transferred to the bearing, the bearing clearance is reduced, and finally the motor bearing is blocked;

the Chinese patent with the publication number of CN209411660U discloses a small-size multifunctional electric hoist based on a steel wire rope, wherein heat conducting blocks are arranged at two ends of the outer side of a motor, and heat radiating fins are arranged at one end of each heat conducting block, so that heat generated by the motor due to work can be conducted to the heat radiating fins, the heat radiating effect is achieved, and faults caused by overhigh temperature of the motor are avoided; but the installation position of the heat conducting block needs to change the original structure of the motor, so that the modification cost is increased, and the heat conducting block mainly dissipates heat during the working of the motor and has limited braking friction heat dissipation effect.

Disclosure of Invention

In order to overcome the defects in the background art and solve the prior art, the utility model discloses a motor braking heat dissipation device which is convenient to refit, and has better braking heat dissipation effect by combining conduction heat dissipation and fan heat dissipation.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

a motor braking heat dissipation device comprises a motor rear cover and a brake which is arranged on the end face of the motor rear cover and used for braking an output shaft of the motor; a heat dissipation circular plate is arranged between the motor rear cover and the brake in a collision manner, an abdication through hole is arranged in the center of the plate surface of the heat dissipation circular plate, and a plurality of heat dissipation fins are uniformly arranged on the outer wall surface of the heat dissipation circular plate in a surrounding manner; the outer clearance cover of stopper is equipped with the protection casing, correspond through support piece between the cover mouth end wall of protection casing and the motor back lid wall and be connected, radiator fan is installed to the inner cover bottom of protection casing, the cover bottom surface of protection casing is equipped with the heat dissipation mesh.

Further, the abdication through holes of the heat dissipation circular plate and the plurality of heat dissipation fins are integrally formed by punching an aluminum plate.

Further, the protection casing is established to heat conduction metal material, the inner cover wall of protection casing is fixed with the heat conduction ring, the heat conduction ring inner wall corresponds the conflict with radiating fin outer end.

Further, the heat conducting ring is made of an elastic composite material mixed with heat conducting filler.

Further, chamfer angles are arranged at two ends of the inner ring surface of the heat conducting ring.

Further, the support piece is set to be the heat insulation screw, the protection casing cover wall is equipped with the connecting hole that the heat insulation screw of adaptation passed, behind the motor lid wall be equipped with the screw that the heat insulation screw of adaptation revolved and twisted.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

according to the motor braking heat dissipation device disclosed by the utility model, when the lifting mechanism of the steel wire rope electric hoist is frequently started and stopped, heat generated by repeated friction of the friction plate of the brake can be effectively transferred out through heat conduction of the heat dissipation circular plate, so that the phenomenon that the heat is transferred to the rear cover of the motor to cause bearing locking is avoided; the original mounting structure is not changed when the radiating circular plate is additionally arranged, so that the modification is very convenient, and the radiating effect can be improved to the greatest extent by blowing and radiating through the radiating fins corresponding to the radiating fan.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the shield of FIG. 1 with the shield removed;

fig. 4 is a schematic view of a mounting structure of the heat conducting ring.

In the figure: 1. a motor rear cover; 2. a protective cover; 3. radiating meshes; 4. a brake; 5. a heat dissipation circular plate; 6. a heat conducting ring; 7. a heat radiation fan; 8. a support; 9. and a heat radiating fin.

Detailed Description

In the description, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., the drawings merely correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not indicated or implied that the device or element referred to must have a specific azimuth:

the motor braking heat dissipation device combined with the attached drawings 1-4 comprises a motor rear cover 1 and a brake 4 which is arranged on the end face of the motor rear cover 1 and used for braking an output shaft of the motor, wherein the brake 4 is a traditional electromagnetic disc brake and is braked by friction between a friction plate and a rotor;

a heat dissipation circular plate 5 is arranged between the motor rear cover 1 and the brake 4 in a collision manner, a yielding through hole is formed in the center of the plate surface of the heat dissipation circular plate 5, the yielding through hole does not interfere with the braking operation of the brake 4, a plurality of heat dissipation fins 9 are uniformly and annularly arranged on the outer wall surface of the heat dissipation circular plate 5, and the heat dissipation fins 9 extend out of the outer walls of the motor rear cover 1 and the brake 4, so that a better heat dissipation effect can be achieved; according to the requirement, the abdication through holes of the heat dissipation circular plate 5 and the plurality of heat dissipation fins 9 are integrally formed by punching an aluminum plate, so that the processing and the manufacturing are convenient, the heat conductivity coefficient of aluminum is much higher than that of cast iron, the heat conductivity and the heat dissipation performance are excellent, the heat dissipation circular plate is light and corrosion-resistant, the cost is low, and the processing performance is strong;

the outer gap of the brake 4 is covered with a protective cover 2, the end wall of the cover opening of the protective cover 2 is correspondingly connected with the cover wall of the motor rear cover 1 through a supporting piece 8, and an air flow gap is formed between the protective cover 2 and the outer walls of the motor rear cover 1 and the brake 4 respectively while the installation is stable; according to the requirement, the supporting piece 8 is set as a heat insulation screw, the cover wall of the protective cover 2 is provided with a connecting hole for the heat insulation screw to pass through, the cover wall of the motor rear cover 1 is provided with a screw hole for the heat insulation screw to be screwed, and the axial positioning and the circumferential positioning of the protective cover 2 are carried out through screw connection; the radiator fan 7 is installed to the inner cover bottom of protection casing 2, and the cover bottom surface of protection casing 2 is equipped with the radiating mesh 3, and radiator fan 7 corresponds radiator fin 9 and bloies the heat dissipation, can furthest improve the radiating effect.

According to the requirement, the protective cover 2 is made of heat-conducting metal, the heat-conducting ring 6 is fixed on the inner cover wall of the protective cover 2, the inner wall of the heat-conducting ring 6 is correspondingly abutted against the outer ends of the radiating fins 9, the heat-conducting ring 6 not only can radially mount and position the protective cover 2, but also can transfer the heat of the radiating circular plate 5 to the outside of the protective cover 2, and the radiating effect is greatly improved; in addition, the heat conducting ring 6 is made of an elastic composite material mixed with heat conducting filler, and the polymer composite material can realize higher heat conducting performance by introducing filler with high heat conducting performance, such as alumina, silicon and the like, and can keep the characteristics in a flexible or elastic state, so that the heat conducting ring is convenient to be in contradiction and installation; in addition, both ends of the inner annular surface of the heat conducting ring 6 are provided with chamfers, so that the heat conducting ring is convenient to be inserted outside the radiating fins 9.

According to the motor braking heat dissipation device, only the brake 4 at the rear cover 1 of the traditional motor is required to be detached, the heat dissipation circular plate 5 is sleeved, the brake 4 is used for clamping the heat dissipation circular plate 5, and then the protective cover 2 with the heat dissipation fan 7 is sleeved, so that when braking friction generates heat, the heat conducted to the heat dissipation circular plate 5 can be taken away by starting the heat dissipation fan 7, and the motor bearing is prevented from being heated and locked.

The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the above-described embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (6)

1. The utility model provides a motor braking heat abstractor, contains motor back lid (1) to and install in motor back lid (1) terminal surface and be used for braking stopper (4) of motor output shaft, characterized by: a heat dissipation circular plate (5) is arranged between the motor rear cover (1) and the brake (4) in a abutting and clamping manner, an abdication through hole is formed in the center of the plate surface of the heat dissipation circular plate (5), and a plurality of heat dissipation fins (9) are uniformly and annularly arranged on the outer wall surface of the heat dissipation circular plate (5); the outer clearance cover of stopper (4) is equipped with protection casing (2), correspond through support piece (8) between the cover mouth end wall of protection casing (2) and motor back lid (1) lid wall and be connected, radiator fan (7) are installed to the inner cover bottom of protection casing (2), the cover bottom surface of protection casing (2) is equipped with heat dissipation mesh (3).

2. The motor brake heat sink of claim 1, wherein: the yielding through holes of the heat dissipation circular plate (5) and the plurality of heat dissipation fins (9) are integrally formed by stamping an aluminum plate.

3. The motor brake heat sink of claim 1, wherein: the heat-conducting metal material is arranged in the protective cover (2), the heat-conducting ring (6) is fixed on the inner cover wall of the protective cover (2), and the inner wall of the heat-conducting ring (6) is correspondingly abutted to the outer ends of the radiating fins (9).

4. A motor brake heat sink according to claim 3, wherein: the heat conducting ring (6) is made of an elastic composite material mixed with heat conducting filler.

5. The motor brake heat sink of claim 4 wherein: both ends of the inner annular surface of the heat conducting ring (6) are provided with chamfers.

6. The motor brake heat sink of claim 1, wherein: the support piece (8) is set to be the heat insulation screw, the cover wall of the protection cover (2) is provided with a connecting hole through which the heat insulation screw is matched, and the cover wall of the motor rear cover (1) is provided with a screw hole screwed by the heat insulation screw.