Crown block electromagnetic brake

Abstract

The utility model discloses a crown block electromagnetic brake which comprises a conical rotor brake motor, a rotor and an end cover are assembled on the conical rotor brake motor, a cover body is arranged on the outer side of the rotor, and a brake male ring and a brake female ring are respectively installed between the conical rotor brake motor and the cover body. The conical rotor brake motor is provided with a positive pressure pipeline for introducing air pressure, the positive pressure pipeline feeds the air pressure into a cavity between the conical rotor brake motor and the cover body, and the air pressure is discharged out of the equipment from the end cover through a gap between the brake male ring and the brake female ring. According to the crown block electromagnetic brake, pipelines with positive air pressure are communicated and sent into the cavity to be blown out, abraded dust or entering dust is blown out, meanwhile, steam or a cleaning agent can be injected for cleaning, the situation that more dust is generated by a motor braking part and cannot be dissipated in time is avoided, abrasion and the failure rate are reduced, and the service life is prolonged. And meanwhile, the heat dissipation capability of the equipment is improved through flowing of airflow.

Description

Technical Field

[0001] The utility model relates to the technical field of special motor braking, in particular to an overhead crane electromagnetic brake. Background Technique

[0002] The conical rotor motor is a motor with a conical stator inner cavity and a conical rotor outer shape. It has the ability of power-off self-braking and is widely used in hoisting equipment such as electric hoists and winches. The braking device of the conical rotor motor consists of a braking spring sleeved on the motor rotor, a fan brake wheel and a brake ring on the end cover. When the motor operates, the air-gap magnetic field of the conical rotor motor generates an axial magnetic pull force, compresses the braking spring, and separates the fan brake wheel from the brake ring on the motor end cover, so that the motor can rotate freely. When the power is off, the axial magnetic pull force disappears, and the rotor generates an axial movement under the thrust of the braking spring, making the fan brake wheel press tightly against the brake ring, generating frictional force, forcing the motor to stop quickly and binding the rotor to prevent the lifted heavy object from falling and ensuring safety.

[0003] The dust generated by the motor braking part is relatively large and cannot be dispersed. Most of this dust enters the braking system, resulting in frequent brake holding phenomena, serious wear of the motor end cover and brake block, and a very high failure rate, which has a greater impact on the use of the overhead crane during the out-of-groove period. Therefore, it is necessary to make technical improvements to the motor braking part in the existing technology, discharge the external and worn dust, and improve the braking force when the brake is locked. Content of the Utility Model

[0004] The purpose of the utility model is to provide an overhead crane electromagnetic brake to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An overhead crane electromagnetic brake includes a conical rotor braking motor, which is equipped with a rotor and an end cover. A cover body is arranged on the outside of the rotor. A brake male ring and a brake female ring are respectively installed between the conical rotor braking motor and the cover body. The conical rotor braking motor is provided with a positive pressure pipeline for introducing air pressure. The positive pressure pipeline sends the air pressure into the chamber between the conical rotor braking motor and the cover body, and the air pressure is discharged from the end cover through the gap between the brake male ring and the brake female ring.

[0007] As a further scheme of the utility model: an air chamber and distribution holes for uniform distribution of air pressure are arranged inside the conical rotor braking motor. The air chamber is annular, the positive pressure pipeline is communicated with the air chamber, and the air chamber is provided with equally spaced distribution holes.

[0008] As a further scheme of the utility model: inner fan blades are arranged on the cover body, and the rotor drives the inner fan blades to rotate to circulate and discharge the air flow.

[0009] As a further solution of the utility model: a wide groove is formed on one side of the conical rotor brake motor close to the cover body, and air pressure enters the wide groove through the distribution holes.

[0010] As a further solution of the utility model: an interface end is arranged at the input end of the positive pressure pipeline, and the conical rotor brake motor is fixed to the carrier.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] For this overhead crane electromagnetic brake, the pipeline with positive air pressure is connected and sent into the chamber to blow out, blowing out the worn or entered dust. At the same time, steam or cleaning agent can also be injected for cleaning, avoiding excessive dust generated by the motor braking part and unable to be discharged in time, reducing wear and failure rate. At the same time, the flow of air improves the heat dissipation capacity of the equipment. Description of the Drawings

[0013] Figure 1 It is a structural schematic diagram of an overhead crane electromagnetic brake;

[0014] Figure 2 It is a structural schematic diagram of the distribution holes in an overhead crane electromagnetic brake.

[0015] In the figure: 1, conical rotor brake motor; 2, end cover; 3, rotor; 4, cover body; 5, brake female ring; 6, brake male ring; 7, positive pressure pipeline; 8, air chamber; 9, interface end; 10, wide groove; 11, distribution holes; 12, inner fan blade. Detailed Embodiment

[0016] Please refer to Figure 1 and 2 , in the embodiment of the utility model, an overhead crane electromagnetic brake includes a conical rotor brake motor 1, the conical rotor brake motor 1 is equipped with a rotor 3 and an end cover 2, a cover body 4 is arranged on the outer side of the rotor 3, a brake male ring 6 and a brake female ring 5 are respectively installed between the conical rotor brake motor 1 and the cover body 4, the conical rotor brake motor 1 is provided with a positive pressure pipeline 7 for introducing air pressure, the positive pressure pipeline 7 sends the air pressure into the chamber between the conical rotor brake motor 1 and the cover body 4, and the air pressure is discharged from the end cover 2 through the gap between the brake male ring 6 and the brake female ring 5. An interface end 9 is arranged at the input end of the positive pressure pipeline 7, the conical rotor brake motor 1 is fixed to the carrier, during the operation process, the conical rotor brake motor 1 is in a static state, during the operation process, the rotor 3 drives the cover body 4 to rotate. If conditions permit, the air inlet of the positive pressure pipeline 7 can be connected with a pipeline with positive air pressure and sent into the chamber to blow out, blowing out the worn or entered dust, avoiding excessive dust generated by the motor braking part and unable to be discharged in time, reducing wear and failure rate. At the same time, the flow of air improves the heat dissipation capacity of the equipment.

[0017] In a preferred embodiment, an air chamber 8 and distribution holes 11 for uniform air pressure distribution are provided inside the conical rotor braking motor 1. The air chamber 8 is annular. The positive pressure pipeline 7 is communicated with the air chamber 8. The distribution holes 11 are arranged on the air chamber 8 at equal distances. The uniform distribution of air pressure is very important for blowing out dust, avoiding problems such as dead air flow areas and incomplete dust discharge.

[0018] In a preferred embodiment, an inner fan blade 12 is provided on the cover body 4. The rotor 3 drives the inner fan blade 12 to rotate to circulate and discharge the air flow. The inner fan blade 12 can be spirally diffused outward. When rotating, it generates a centrifugal force on the air flow and pushes the air flow outwards at high speed to blow out the dust between the brake male ring 6 and the brake female ring 5. An air filter device can be installed at the interface end 9. The centrifugal force generated by the rotation of the inner fan blade 12 promotes the air flow circulation, and the air flow is inhaled through the interface end 9, without the need for a separate positive pressure air source pipeline and gas compression device.

[0019] In a preferred embodiment, a wide slot 10 is formed on one side of the conical rotor braking motor 1 close to the cover body 4. The air pressure enters the wide slot 10 through the distribution holes 11. The distribution holes 11 uniformly inject the air flow into the wide slot 10, and the air flow is distributed to the inner fan blade 12 through the wide slot 10 and is uniformly discharged under the action of the centrifugal force of the inner fan blade 12.

[0020] The interface end 9 can not only introduce air flow, but also introduce steam or cleaning agent, which is discharged under the action of the centrifugal force of the inner fan blade 12 to clean the brake male ring 6 and the brake female ring 5. After the cleaning is completed, it is switched to air injection for drying.

[0021] It should be noted that the above embodiments all belong to the same inventive concept of the utility model. The descriptions of the embodiments have their own emphases. For the parts not described in detail in individual embodiments, reference can be made to the descriptions in other embodiments.

[0022] The above-described embodiments only represent the implementation manners of the present utility model. The descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An overhead crane electromagnetic brake, comprising a conical rotor brake motor (1), the conical rotor brake motor (1) being equipped with a rotor (3) and an end cover (2), a cover body (4) being arranged on the outer side of the rotor (3), a brake male ring (6) and a brake female ring (5) being respectively installed between the conical rotor brake motor (1) and the cover body (4), characterized in that, The conical rotor brake motor (1) is provided with a positive pressure pipeline (7) for introducing air pressure. The positive pressure pipeline (7) sends the air pressure into the chamber between the conical rotor brake motor (1) and the cover body (4), and the air pressure is discharged from the end cover (2) through the gap between the brake male ring (6) and the brake female ring (5).

2. The overhead crane electromagnetic brake according to claim 1, characterized in that, An air chamber (8) and distribution holes (11) for uniform distribution of air pressure are arranged inside the conical rotor brake motor (1). The air chamber (8) is annular in shape. The positive pressure pipeline (7) is communicated with the air chamber (8), and the air chamber (8) is provided with distribution holes (11) evenly distributed at equal distances.

3. The overhead crane electromagnetic brake according to claim 1 or 2, characterized in that, An inner fan blade (12) is arranged on the cover body (4), and the rotor (3) drives the inner fan blade (12) to rotate to circulate and discharge the air flow.

4. The overhead crane electromagnetic brake according to claim 1, characterized in that, A wide slot (10) is formed on one side of the conical rotor brake motor (1) close to the cover body (4), and the air pressure enters the wide slot (10) through the distribution holes (11).

5. The overhead crane electromagnetic brake according to claim 1, characterized in that, An interface end (9) is arranged at the input end of the positive pressure pipeline (7), and the conical rotor brake motor (1) is fixed to the carrier.

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