Integrated gap-adjustment-free permanent magnet brake

Abstract

The utility model relates to the technical field of brakes, and provides an integrated clearance-adjustment-free permanent magnet brake which comprises a stator, a rotor and a flange plate, the rotor is connected with the flange plate, a center positioning hole is formed in the middle of the stator, one end of the flange plate is connected into the center positioning hole in a matched mode and rotationally connected with the center positioning hole, and the other end of the flange plate is connected with the rotor. And the flange plate, the rotor and the stator form an integrated structure. According to the utility model, the concentricity of the rotor and the stator is improved, and the normal braking effect is prevented from being influenced by deviation.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, and in particular, to a permanent magnet brake with an integrated structure and no need to adjust the clearance. Background Technique

[0002] The permanent magnet brake is a new type of adjustable constant torque output device, and its main features and application fields are extensive. The braking force of the permanent magnet brake is generated by a permanent magnetic field, so it works in a power-off state and realizes functions such as holding, positioning, and emergency stop. In order to neutralize the braking effect, the magnetic flux of the permanent magnet can be offset by an alternating electromagnetic field (electromagnetic release system). This design ensures zero-clearance transmission of the braking torque to the machine shaft (such as the motor shaft) and reliably releases the permanent magnet single-sided brake with zero residual torque.

[0003] In the traditional permanent magnet brake, the stator and the rotor are separately and independently installed and fixed on various components. The rotor is installed on the motor shaft, which is difficult to install. Moreover, the rotor and the stator are prone to non-concentricity and deviation during use, which has an adverse effect on normal braking when braking contact occurs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a permanent magnet brake with an integrated structure and no need to adjust the clearance, so as to improve the concentricity of the rotor and the stator and prevent deviation from affecting the normal braking effect.

[0005] The utility model is realized by the following technical solutions: a permanent magnet brake with an integrated structure and no need to adjust the clearance, including a stator, a rotor, and a flange. The rotor is connected to the flange. A central positioning hole is opened in the middle of the stator, and one end of the flange is adaptively inserted into the central positioning hole and rotatably connected thereto to form an integrated structure.

[0006] Further, an installation step groove is provided in the middle of the stator close to the central positioning hole. A bearing is adaptively clamped in the installation step groove, and the flange abuts against the bearing.

[0007] Further, a clearance gasket is provided on the end face of the bearing close to the rotor, and the clearance gasket is arranged between the bearing and the flange.

[0008] Further, a retaining ring or a nut is sleeved on one end of the flange passing through the central positioning hole.

[0009] Further, a riveted flanging structure is adopted on one side of the flange passing through the central positioning hole.

[0010] Further, it also includes connecting screws and spring washers. The spring washers are arranged between the flange and the rotor, and the connecting screws sequentially pass through the flange, the spring washers, and the rotor.

[0011] Furthermore, the flange is a conical hollow structure.

[0012] Furthermore, it further includes a permanent magnet and a connecting screw. The permanent magnet is arranged on the side of the stator away from the rotor, and the connecting screw passes through the permanent magnet and is threadedly connected and fixed to the stator.

[0013] The technical solution of the present utility model has at least the following advantages and beneficial effects: By press-fitting and riveting the rotor and the stator to form an integral structure, the present utility model solves the problems of non-concentricity and deviation during the use of the rotor and the stator, and the running-in between the stator and the rotor is better, ensuring the consistency of the torque of the permanent magnet brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 Schematic diagram of the internal structure of the integral non-adjustable clearance permanent magnet brake provided for the embodiments of the present utility model;

[0016] Figure 2 Schematic diagram of the structure of one end face of the flange in the present utility model;

[0017] Figure 3 Schematic diagram of the structure when the flange in the present utility model adopts a riveted and flanged structure.

[0018] Reference numerals: 1 - stator, 11 - central positioning hole, 12 - mounting step groove, 2 - rotor, 3 - flange, 4 - bearing, 5 - clearance gasket, 6 - retaining ring, 7 - coupling screw, 8 - spring piece, 9 - permanent magnet, 10 - connecting screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Accordingly, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0021] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] The following is further described in conjunction with specific embodiments. Referring to Figures 1 - 3 As shown, this embodiment is an integrated permanent magnet brake with non-adjustable clearance, including a stator 1, a rotor 2, and a flange 3. The rotor 2 is connected to the flange 3. A central positioning hole 11 is provided in the middle of the stator 1. One end of the flange 3 is adaptively inserted into the central positioning hole 11 and rotatably connected thereto to form an integrated structure. Specifically, compared with traditional permanent magnet brakes, there is no connection and contact between the stator 1 and the rotor, and they are respectively installed and fixed on each component, resulting in a lack of positioning between the stator 1 and the rotor. It is difficult to ensure the coaxiality between the rotor and the stator 1. It is extremely easy for the rotor and the stator 1 to deviate during frictional contact, and problems such as insufficient braking frictional contact torque may occur. By providing a central positioning hole 11 in the middle of the stator 1 to form a positioning reference and contacting and rotatably connecting with the flange 3, the motor shaft can drive the flange 3 and the rotor 2 to rotate synchronously and become an integral body, reducing the installation difficulty, ensuring reliability, improving the coaxiality and fit between the rotor 2 and the stator 1, making it difficult for the rotor 2 to run off track, having better running-in with the stator 1, and ensuring a good braking effect of the brake.

[0023] As Figure 1 As shown, an installation step groove 12 is provided in the middle of the stator 1 adjacent to the central positioning hole 11. A bearing 4 is adaptively clamped in the installation step groove 12, and the flange abuts against the bearing 4. Specifically, the bearing 4 abuts against the bottom of the installation step groove 12. The rotor 2 and the stator 1 are press-fitted into the installation step groove 12 through the bearing 4 to become an integral body, and the rotor 2 and the stator 1 can rotate relative to each other, solving the problem of non-concentricity between the rotor 2 and the stator 1 during use and having good torque consistency.

[0024] Preferably, a clearance shim 5 is provided on the end face of the bearing 4 close to the rotor 2. The clearance shim 5 is arranged between the bearing 4 and the flange 3. A retaining snap ring 6 or a nut is sleeved on one end of the flange 3 passing through the central positioning hole 11. Specifically, the installation clearance of the brake can be adjusted by a plurality of clearance shims 5, and the position of the retaining snap ring 6 can be changed. The retaining snap ring 6 abuts against the positioning center hole, so as to accurately adjust the clearance of the permanent magnet brake. The nut can be sleeved on the front end of the flange 3 and is threadedly connected thereto for adjustment, which is simple and convenient to operate.

[0025] Referring to Figure 3 As shown, a riveting and flanging structure is adopted on the side where the flange 3 passes through the central positioning hole 11. Specifically, riveting causes the front end of the flange 3 to be flanged, so that the flange 3 cannot be pulled out axially, and it is fixed in cooperation with the retaining snap ring 6, which improves the installation firmness of the brake.

[0026] This embodiment further includes a connecting screw 7 and a spring piece 8. The spring piece 8 is arranged between the flange 3 and the rotor 2, and the connecting screw 7 sequentially passes through the flange 3, the spring piece 8 and the rotor 2.

[0027] As Figure 1 shown, the flange 3 in this embodiment is a conical hollow structure, and its conical end is inserted into the inner hole of the stator 1.

[0028] As Figure 1 shown, this embodiment further includes a permanent magnet 9 and a connecting screw 10. The permanent magnet 9 is arranged on the side of the stator 1 away from the rotor 2. The connecting screw 10 passes through the permanent magnet 9 and is threadedly connected and fixed to the stator 1. The installation and disassembly of the permanent magnet 9 are relatively convenient.

[0029] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated permanent magnet brake with adjustable clearance, comprising a stator (1), a rotor (2) and a flange (3), wherein the rotor (2) is connected to the flange (3), and is characterized in that: A central positioning hole (11) is formed in the middle of the stator (1). One end of the flange plate (3) is adaptively inserted into the central positioning hole (11) and is rotatably connected thereto. The flange plate (3) and the rotor (2) form an integral structure with the stator (1).

2. The integrated non-adjustable clearance permanent magnet brake according to claim 1, characterized in that: An installation step groove (12) adjacent to the central positioning hole (11) is provided in the middle of the stator (1). A bearing (4) is adaptively clamped in the installation step groove (12), and the flange abuts against the bearing (4).

3. The integrated non-adjustable clearance permanent magnet brake according to claim 2, wherein: A clearance gasket (5) is provided on one end face of the bearing (4) close to the rotor (2), and the clearance gasket (5) is arranged between the bearing (4) and the flange plate (3).

4. The integrated non-adjustable clearance permanent magnet brake according to claim 2 or 3, characterized in that: A retaining ring (6) or a nut is sleeved on one end of the flange plate (3) passing through the central positioning hole (11).

5. The integrated non-adjustable clearance permanent magnet brake according to claim 2 or 3, characterized in that: One side of the flange plate (3) passing through the central positioning hole (11) adopts a riveted and flanged structure.

6. The integrated non-adjustable clearance permanent magnet brake according to claim 1, wherein: A connecting screw (7) and a spring plate (8) are further included. The spring plate (8) is arranged between the flange plate (3) and the rotor (2), and the connecting screw (7) sequentially passes through the flange plate (3), the spring plate (8) and the rotor (2).

7. The integrated non-adjustable clearance permanent magnet brake according to claim 1, wherein: The flange plate (3) is a conical hollow structure.

8. The integrated non-adjustable clearance permanent magnet brake according to claim 1, wherein: A permanent magnet (9) and a connecting screw (10) are further included. The permanent magnet (9) is arranged on one side of the stator (1) away from the rotor (2), and the connecting screw (10) passes through the permanent magnet (9) and is threadedly connected and fixed to the stator (1).

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