Mounting structure for brake of hoisting motor

Abstract

The utility model relates to the field of motors, in particular to a hoisting motor brake mounting structure. Comprising a motor body, and a rotor and a brake connected with the rotor are arranged in the motor body; the brake comprises a brake shell and a brake module, the brake shell is connected with the motor shell in an interference fit mode, and one end of the brake shell is connected with the brake module. According to the utility model, the brake casing of the brake is arranged inside the motor and is matched with the brake casing of the motor, so that the brake casing of the brake is tightly attached to the rear flange, the structure further promotes the compactness and light weight of the whole structure of the motor, the axial length of the motor is effectively shortened, and the service life of the motor is prolonged. In addition, the overall size of the motor is obviously reduced, the motor can be used in an application scene with limited space, in addition, the structural design also reduces the use of materials, and the production cost of the motor is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a hoisting motor brake installation structure. Background Art

[0002] In the current lifting industry, safety performance is given top priority. To ensure that equipment can stop operating quickly and reliably in the event of an emergency power outage or other unexpected situation, and to avoid potential accident risks, the motors used in lifting equipment are required to be equipped with power-off electromagnetic brakes of corresponding specifications. Although the implementation of this safety measure greatly enhances the safety protection capabilities of the equipment, it also inevitably brings the following problems.

[0003] When the power-off electromagnetic brake is added, the overall cost of the motor increases. As an important component of the motor safety system, the brake often accounts for nearly one-third of the motor manufacturing cost, which undoubtedly increases the cost for the manufacturer. In addition, the complex structure and large size of the electromagnetic brake not only increase the overall weight and size of the motor, but also put higher requirements on the design layout of the motor, further increasing the production difficulty and manufacturing cost. Utility Model Content

[0004] The purpose of this utility model is to propose a lifting motor brake installation structure. By redesigning the brake, rationally utilizing the original space inside the motor, combining the brake with the rear flange of the motor, and using the rear flange of the motor as the brake housing, the volume of the entire motor is greatly reduced to solve the problems of high motor production cost and large motor volume in the background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a lifting motor brake installation structure, comprising a motor body, wherein a rotor and a brake connected to the rotor are arranged in the motor body; the brake comprises a brake housing and a brake module, wherein the brake housing is connected to the motor housing by an interference fit, and one end of the brake housing is connected to the brake module.

[0007] As a further improvement, the brake module includes an armature, a brake cover, a friction disc and a brake winding; one end of the armature is connected to the brake housing through a spring, and the other end is connected to the brake cover through a friction disc, and the brake winding is embedded in the brake housing.

[0008] As a further improvement, it further comprises a guide sleeve, and the brake cover plate is connected to the brake housing via the guide sleeve and screws.

[0009] As a further improvement, a square key is provided at the center of the friction disc, and a through hole is provided at the center of the square key for connecting to the rotor shaft.

[0010] As a further improvement, a plurality of rubber strips are embedded between the friction disc and the square key.

[0011] As a further improvement, the brake winding is arranged on a winding frame.

[0012] As a further improvement, the brake housing is connected to the rear flange of the motor housing.

[0013] As a further improvement, it further includes a magnetic encoder, which is sleeved on the shaft section of the rotor shaft located outside the brake module.

[0014] As a further improvement, the brake housing is made of magnetic conductive material, and the motor housing is made of aluminum.

[0015] As a further improvement, the brake housing is integrated with the motor housing.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] Compared with the traditional motor structure in which the brake is usually installed on the mounting surface of the rear flange of the motor, and the brake housing and electromagnetic coil of the brake are far away from the rear flange mounting surface, the utility model arranges the brake housing of the brake inside the motor and cooperates with the brake housing of the motor itself, so that the brake housing of the brake is arranged close to the rear flange. This structure further promotes the compactness and lightweight of the overall structure of the motor, not only effectively shortens the axial length of the motor, but also significantly reduces the overall volume of the motor, meeting the use of the motor in application scenarios with limited space. In addition, this structural design also reduces the use of materials, thereby further reducing the production cost of the motor.

[0018] While ensuring the reduction in size of the motor, the utility model optimizes the brake structure, ensuring that the brake can respond quickly and stably and reliably realize the braking function in a compact space, fully meeting the safe braking requirements of the motor under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a crane motor brake installation structure of the utility model;

[0020] Figure 2 This is a schematic diagram of a brake housing of a crane motor brake installation structure according to the present invention;

[0021] Figure 3 This is another schematic diagram of a brake housing of a crane motor brake installation structure according to the present invention;

[0022] Figure 4 This is a schematic diagram of a brake module of a crane motor brake installation structure of the utility model;

[0023] Figure 5 This is a schematic diagram of a friction disc of a lifting motor brake installation structure of the utility model.

[0024] Figure numerals: 1. stator; 2. brake winding; 3. rotor; 4. motor housing; 5. brake casing; 6. winding bobbin; 7. brake cover; 8. spring; 9. square key; 10. friction disc; 11. magnetic encoder. DETAILED DESCRIPTION

[0025] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0028] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] Example 1

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] The utility model provides a lifting motor brake installation structure, which includes a motor body, in which a rotor 3 and a brake connected to the rotor 3 are provided; the brake includes a brake housing 5 and a brake module, wherein the brake housing 5 is connected to the motor housing 4 by an interference fit, and one end of the brake housing 5 is connected to the brake module.

[0032] like Figure 1 As shown, the motor rotor 3 in the embodiment has the same structure as that of the prior art. It can be either a permanent magnet motor rotor 3 or a squirrel cage rotor 3 of a three-phase asynchronous motor. The rotor 3 is supported by bearings at both ends to ensure the freedom of rotation. In the embodiment, the stator 1 is installed in the motor housing 4, and the stator 1 and the brake winding 2 are encapsulated by epoxy encapsulation to ensure insulation performance.

[0033] like Figure 2 and Figure 3 As shown, in this embodiment, the brake housing 5 is arranged inside the motor, and one end of the brake housing 5 is tightly connected to the rear flange of the motor housing 4. In this embodiment, when the motor housing 4 is made of aluminum, the brake housing 5 is preferably made of magnetic material and is connected by interference crimping. In order to ensure the adsorption capacity of the brake in the embodiment, the magnetic material can be made of No. 10 steel, No. 20 steel, Y15 and other materials, and the motor housing 4 can be made of common extruded aluminum profiles such as 6063-T5.

[0034] In the embodiment, the brake module includes an armature, a brake cover plate 7, a friction disc 10, and a brake winding 2; one end of the armature is connected to the brake housing 5 via a spring 8, and the other end is connected to the brake cover plate 7 via the friction disc 10. The brake winding 2 is embedded in the brake housing 5. The brake winding 2 is arranged on a winding frame 6. In the embodiment, Figure 4As shown, the armature is fixed to the brake housing 5, and a plurality of springs 8 are provided between the armature and the brake housing 5. When the springs 8 are compressed, they exert a certain elastic force on the armature; the brake cover plate 7 is fixed to the brake housing 5 by means of screws and guide sleeves, and a friction disk 10 is clamped between the armature and the brake cover plate 7.

[0035] When the power is off, the spring 8 bounces up and pushes up the connected armature, and together with the brake cover plate 7, the friction disc 10 is tightly clamped and compacted, so that the friction disc 10 cannot rotate, thereby achieving the braking purpose; after the coil of the brake winding 2 is energized, the brake housing 5 generates a magnetic field, which will attract the armature and compress the spring 8. The compressed spring 8 will cause the friction disc 10 to be released and can rotate freely along the axial direction, thereby releasing the braking state.

[0036] The brake cover plate 7 is connected to the brake housing 5 via a guide sleeve and screws. The guide sleeve and screws provided in the embodiment are connected to connect the brake cover plate 7 to the brake housing 5. In addition, the gap during the adsorption of the spring 8 during movement is controlled by the thickness of the guide sleeve.

[0037] like Figure 5 As shown, the friction disc 10 is provided with a square key 9 at its center. This key 9 has a through-hole at its center for connection to the rotor 3 shaft. Multiple rubber strips are embedded between the friction disc 10 and the square key 9. The square key 9 in this embodiment enables torque transmission between the brake and the rotor 3 shaft; the rubber strips ensure sufficient friction between the square key 9 and the friction disc.

[0038] The magnetic encoder 11 is also included, and the magnetic encoder 11 is sleeved on the shaft section of the rotor 3 outside the brake module. The magnetic encoder 11 provided in the embodiment can measure the displacement of the rotor 3 shaft.

[0039] This embodiment is basically the same as Example 1, except that the brake housing 5 and the motor housing 4 described in this embodiment are integrated. In the embodiment, when the brake housing 5 and the motor housing 4 are both composed of carbon steel, the brake housing 5 can be directly processed on the motor housing 4 during processing. The integrated structure allows the brake housing 5 and the motor housing 4 to share some materials, effectively reducing the overall manufacturing cost.

[0040] The utility model arranges the brake housing of the brake inside the motor and cooperates with the brake housing of the motor itself, so that the brake housing of the brake is arranged close to the rear flange. This structure further promotes the compactness and lightweight of the overall structure of the motor, not only effectively shortens the axial length of the motor, but also significantly reduces the overall volume of the motor, meeting the use of the motor in application scenarios with limited space. In addition, this structural design also reduces the use of materials, thereby further reducing the production cost of the motor.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0042] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any changes made based on the technical solution in accordance with the technical concept proposed by the present utility model shall fall within the scope of protection of the claims of the present utility model.

Claims

1. A lifting motor brake mounting structure, comprising a motor body, characterized in that: The motor body is provided with a rotor and a brake connected to the rotor; the brake comprises a brake housing and a brake module, wherein the brake housing is connected to the motor housing by interference fit, and one end of the brake housing is connected to the brake module.

2. A lifting motor brake installation structure according to claim 1, characterized in that: The brake module includes an armature, a brake cover, a friction disc and a brake winding; one end of the armature is connected to the brake housing through a spring, and the other end is connected to the brake cover through the friction disc, and the brake winding is embedded in the brake housing.

3. A lifting motor brake installation structure according to claim 2, characterized in that: It also includes a guide sleeve, and the brake cover plate is connected to the brake housing through the guide sleeve and screws.

4. A lifting motor brake installation structure according to claim 2, characterized in that: A square key is provided at the center of the friction disc, and a through hole for connecting with the rotor shaft is provided at the center of the square key.

5. A lifting motor brake installation structure according to claim 4, characterized in that: A number of rubber strips are embedded between the friction disc and the square key.

6. A lifting motor brake installation structure according to claim 2, characterized in that: The brake winding is arranged on a winding frame.

7. The hoisting motor brake installation structure according to claim 1, characterized in that: The brake housing is connected to the rear flange of the motor housing.

8. The hoisting motor brake installation structure according to claim 1, characterized in that: It also includes a magnetic encoder, which is sleeved on the shaft section of the rotor shaft located outside the brake module.

9. The hoisting motor brake installation structure according to claim 1, characterized in that: The brake housing is made of magnetic conductive material, and the motor housing is made of aluminum.

10. The hoisting motor brake installation structure according to claim 1, characterized in that: The brake housing is integrated with the motor housing.

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