Permanent magnet brake structure with air gap for delivery belt

Abstract

The utility model discloses a brake structure with an air gap for delivery, and belongs to the technical field of permanent magnet brakes. Comprising a rotor part and a stator part which are coaxially arranged, an air gap is formed between the rotor part and the stator part in the axial direction, the rotor part can rotate relative to the stator part, the stator part comprises a magnetic shell, the rotor part comprises a rotary flange, the rotary flange is provided with a connecting shaft along the rotary axis, and the connecting shaft is connected with the magnetic shell. The magnetic shell comprises a mounting groove into which the connecting shaft extends, and a bearing is arranged between the mounting groove and the connecting shaft; and the rotor part can be connected with a transmission device through a spline structure. And by adopting the design of the preassembled air gap, the preassembly of the stator and the rotor is completed before leaving a factory, so that the complex debugging work on site is avoided. The time and labor cost are saved, and the stability and reliability of the air gap distance are effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of brake, especially relates to a delivery brake structure with air gap. BACKGROUND

[0002] Common electric brake usually has three modes: regenerative braking, dynamic braking and electromagnetic braking.

[0003] However, the stator and rotor of the current brake are separated during transportation, manual assembly and air gap debugging need to be carried out on the customer site, the debugging of air gap is to increase the gasket or process a knife to part of the parts, which not only consumes time and effort, but also improper operation can lead to unstable air gap distance, thereby affecting the performance and reliability of the brake.

[0004] In view of the continuous improvement of market demand for brake performance, it is particularly urgent to develop a brake structure with pre-installed air gap. This structure realizes the pre-assembly of the stator and rotor before leaving the factory, eliminates the need for on-site debugging, and ensures the stability of the air gap distance, which has great significance for improving the market competitiveness and practical application value of the product. INVENTION CONTENTS

[0005] The utility model mainly solves the technical problem to provide a delivery brake structure with air gap, realizes the pre-assembly of the stator and rotor before leaving the factory, eliminates the need for on-site debugging, and ensures the stability of the air gap distance, which has great significance for improving the market competitiveness and practical application value of the product.

[0006] To solve the above technical problems, one technical scheme of the utility model is as follows:

[0007] A delivery brake structure with air gap, comprising a rotor part and a stator part arranged coaxially, an air gap is arranged between the rotor part and the stator part in the axial direction, the rotor part can rotate relative to the stator part,

[0008] The stator part comprises a magnetic shell, the rotor part comprises a rotary flange, the rotary flange is provided with a connecting shaft along a rotary axis, the magnetic shell comprises a mounting groove for the connecting shaft to extend into, and a bearing is arranged between the mounting groove and the connecting shaft.

[0009] Further, the mounting groove is connected with the outer ring of the bearing, and the connecting shaft is connected with the inner ring of the bearing.

[0010] Further, the rotor part can be connected with the shaft of the transmission device through the spline structure, and the transmission device can be a motor, a speed reducer, a working machine or an actuator.

[0011] Further, the rotary flange is provided with a spline shaft away from one side of the magnetic shell, the spline shaft is provided with external spline, the speed reducer has internal spline matched with the external spline.

[0012] Further, the rotary flange is provided with a spline shaft away from one side of the magnetic shell, the spline shaft is provided with external spline, the speed reducer has internal spline matched with the external spline.

[0013] The beneficial technical effects of the utility model are:

[0014] The utility model adopts the design of pre-installed air gap, and the pre-assembly of stator and rotor is completed before factory delivery, so that the complex debugging work on site is avoided. The setting of bearing not only provides support and positioning function, but also ensures the stability of relative position between rotor part and stator part, which not only saves time and labor cost, but also effectively ensures the stability and reliability of air gap distance.

[0015] The utility model sets up spline structure in rotor part, simplifies the process of installing rotor in speed reducer, and now can be directly realized through spline cooperation, which not only reduces the number of parts, but also improves the stability and reliability of torque transmission. In addition, the introduction of spline structure makes the disassembly and assembly between rotor part and speed reducer more convenient, and is convenient for subsequent maintenance and replacement work. DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram (perspective view) of the utility model;

[0017] Figure 2 It is the overall structure schematic diagram (cross section view, embodiment one) of the utility model;

[0018] Figure 3 It is the overall structure schematic diagram (partial cross section view, embodiment two) of the utility model;

[0019] Figure 4 It is the overall structure schematic diagram (cross section view, embodiment three) of the utility model

[0020] The marks of each part in the drawings are as follows:

[0021] 1, rotor part;11, rotary flange;12, connecting shaft;13, spline structure;131, spline shaft;14, armature;

[0022] 2, stator part;21, magnetic shell;22, installation groove;23, permanent magnet;24, winding coil;

[0023] 3, air gap;

[0024] 4, bearing. DETAILED DESCRIPTION

[0025] In order to enable a clearer understanding of the technical means of the present application and to enable implementation in accordance with the content of the specification, the specific embodiments of the present application are further described in detail below in combination with the drawings and examples, and the following examples are used to illustrate the present application but not to limit the scope of the present application.

[0026] The specific embodiment discloses a brake structure with an air gap.

[0027] Embodiment one, as shown in the figure: Figures 1 to 2

[0028] It is a structure of a permanent magnet brake, the rotor part 1 includes a rotary flange 11, the bottom center position of the rotary flange 11 extends to one side of the stator part and is provided with a connecting shaft 12, and the connecting shaft 12 is arranged along the rotary axis of the rotary flange 11.

[0029] In the embodiment, the connecting shaft 12 and the rotary flange 11 are integrated.

[0030] The stator part 2 includes a magnetic shell 21, and the center position of the magnetic shell 21 is provided with a mounting groove 22 for the connecting shaft 12 to extend into. A bearing 4 is arranged between the mounting groove 22 and the connecting shaft 12, the outer ring of the bearing 4 is connected with the inner wall of the mounting groove 22, and the inner ring of the bearing 4 is connected with the outer wall of the connecting shaft 12, so that the relative rotation between the rotor part 1 and the stator part 2 is realized, and the stable gap, i.e. the air gap 3, between the two is maintained.

[0031] The spline structure 13 is arranged on the side of the rotary flange 11 away from the magnetic shell 21, i.e. the side away from the air gap 3. The spline structure 13 specifically includes a spline shaft 131, which is arranged along the rotary axis of the rotary flange 11 and is provided with an external spline on the outer surface thereof. Such a design enables the rotor part 1 to be directly connected with a speed reducer through the spline structure 13, without the need for an additional shaft or a shaft coupling, thereby simplifying the assembly process and improving the stability and reliability of the connection.

[0032] In summary, the present application adopts the design of pre-installing the air gap 3, and the relative position stability between the rotor part 1 and the stator part 2 is ensured through the arrangement of the bearing 4, and the distance of the air gap 3 is maintained constant. At the same time, the spline structure 13 is arranged on the rotor part 1, thereby simplifying the process of installing the rotor on the transmission device and improving the stability and reliability of the torque transmission.

[0033] Embodiment two, as shown in the figure. Figure 3

[0034] ​​Based on the permanent magnet brake structure of Embodiment 1, Embodiment 2 also provides a design scheme for selecting different connecting shafts 12. The connecting shaft 12 and the rotary flange 11 are separate structures. A cylindrical through groove is provided in the center of the magnetic housing 21, and the connecting shaft 12 is fixedly installed in the cylindrical through groove, specifically with an interference fit.

[0035] It is worth noting that for Embodiment 1 and Embodiment 2, the magnetization structure of the permanent magnet 23 can be selected according to actual needs, and can be an axial magnetization structure or a radial magnetization structure. When an axial magnetization structure is selected, the permanent magnet 23 is located between the wound coil 24 and the armature 14, or below the wound coil 24.

[0036] Example 3, as follows Figure 4 The diagram shows the structure of an electric brake. It also uses a separate structure design with a connecting shaft 12 and a rotating flange 11, but it differs from Embodiment 2 in that the structure of the connecting shaft is different, and the bearing is located in the middle section of the mounting groove.

[0037] It is worth noting that, in this utility model, whether it is a permanent magnet brake or an electrically powered brake, the connecting shaft technology solutions of Embodiment 1, Embodiment 2 and Embodiment 3 can be selected according to the actual situation.

[0038] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A delivery structure of a permanent magnet brake with air gap, comprising a rotor part (1) and a stator part (2) arranged coaxially, an air gap (3) is arranged between the rotor part and the stator part in axial direction, the rotor part can rotate relative to the stator part, characterized in that: the stator part comprises a magnetic shell (21), the rotor part comprises a rotary flange (11), the rotary flange is provided with a connecting shaft (12) along a rotary axis, the magnetic shell comprises a mounting groove (22) for the connecting shaft to extend into, and a bearing (4) is arranged between the mounting groove and the connecting shaft. The mounting groove is connected with the outer ring of the bearing, and the connecting shaft is connected with the inner ring of the bearing.

2. A permanent magnet brake structure with an air gap for delivery according to claim 1, characterized in that: The rotor part can be connected with the shaft of a transmission device through a spline structure (13).

3. A permanent magnet brake structure with an air gap for delivery according to claim 1, characterized in that: The rotary flange is provided with a spline shaft (131) away from the magnetic shell, the spline shaft is provided with external splines, and the transmission device has internal splines matched with the external splines.

4. A permanent magnet brake structure delivering an air gap as claimed in claim 3, characterized in that: ​

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