Multi-rotor power-on brake

Abstract

The utility model relates to the field of electromagnetic brakes, and particularly discloses a multi-rotor power-on brake which comprises a magnet yoke and further comprises a cylindrical movable plate, one end of the cylindrical movable plate is inserted into an inner hole of the magnet yoke, and at least two rotors are connected to the cylindrical movable plate in a sleeved mode. The multiple rotors are clamped between the end face of the magnet yoke and the end face of the cylindrical movable plate. According to the utility model, by additionally arranging the axial superposition of the rotors, the braking area is increased, the braking torque is increased, and the braking effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic brakes, in particular to a multi-rotor electric brake. Background Art

[0002] The operating principle of the electric brake is based on electromagnetic induction and force. When the rated voltage is applied to the coil winding, the electromagnetic force attracts the moving plate and attaches it to the end surface of the slotted disc, stopping the rotor motor. When power is removed, the spring force pulls the moving plate back, separating it from the yoke and allowing the rotor and motor to resume rotation.

[0003] Existing brakes (such as Figure 3 The conventional multi-rotor electric brake (shown in FIG) uses a translation plate, which has only one friction surface and a small braking torque. Therefore, a multi-rotor electric brake is designed to increase the braking area and braking torque. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-rotor electric brake which axially squeezes multiple rotors, thereby increasing the friction surface between the magnetic yoke and the moving plate and improving the braking torque.

[0005] The utility model is achieved through the following technical solutions: a multi-rotor electric brake, including a magnetic yoke and a cylindrical movable plate, one end of the cylindrical movable plate is inserted into the inner hole of the magnetic yoke, and at least two rotors are sleeved on the cylindrical movable plate; multiple rotors are clamped between the end face of the magnetic yoke and the end face of the cylindrical movable plate.

[0006] Furthermore, friction plates are bonded to both side end surfaces of the rotor.

[0007] Furthermore, it also includes ring plates, which are alternately sleeved on the cylindrical moving plate with the rotor, and the end faces of the ring plates are in contact with the end faces of the ring plates.

[0008] Furthermore, the inner hole wall of the magnetic yoke is provided with a snap-in socket adapted to fit the outer diameter of the ring sheet.

[0009] Furthermore, it also includes connecting screws, a flange and a spring sheet, the two ends of the spring sheet are respectively connected to the flange and the cylindrical movable plate, and the connecting screws pass through the cylindrical movable plate, the spring sheet and the flange in sequence.

[0010] Furthermore, a tightening screw hole is provided on the side surface of the flange, and the tightening screw hole is arranged along the radial direction of the flange.

[0011] Furthermore, the rotor and the cylindrical moving plate are connected by a spline.

[0012] The technical solution of the present invention has at least the following advantages and beneficial effects: the present invention arranges the movable plate as a cylindrical structure which is inserted into the inner hole of the magnetic yoke, and sleeves a plurality of rotors on the movable plate, so that when power is supplied, extrusion is generated between the rotors, thereby increasing the braking contact area between the magnetic yoke and the movable plate, improving the braking torque, and achieving a better braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of the multi-rotor electric brake in the present invention;

[0014] Figure 2 for Figure 1 A local enlarged view of point A in FIG;

[0015] Figure 3 This is a schematic diagram of the existing electric brake structure.

[0016] Reference numerals: 1-yoke, 11-bayonet, 2-cylindrical moving plate, 3-flange, 31-tightening screw hole, 4-spring plate, 5-connecting screw, 6-rotor, 61-friction plate, 7-ring plate. DETAILED DESCRIPTION

[0017] The following is a specific implementation method with reference to the accompanying drawings.

[0018] Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings Detailed implementation of the drawings

[0019] Specific implementation of the accompanying drawings Specific implementation of the accompanying drawings

[0020] The following is further described in conjunction with specific embodiments. Figure 1-Figure 3 As shown, this embodiment is a multi-rotor 6 electric brake, including a magnetic yoke 1 and a cylindrical movable plate 2. One end of the cylindrical movable plate 2 is inserted into the inner hole of the magnetic yoke 1, and at least two rotors 6 are sleeved on the cylindrical movable plate 2; the multiple rotors 6 are clamped between the end surface of the magnetic yoke 1 and the end surface of the cylindrical movable plate 2; specifically, as shown in FIG. Figure 3 As shown, the braking area of ​​a conventional electric brake is only part of the end surface of the yoke 1 close to the moving plate, and its braking area is relatively small. The utility model arranges multiple rotors 6 on the cylindrical moving plate 2. When the yoke 1 is energized, the electromagnetic force attracts the cylindrical moving plate 2 to move toward one end of the yoke 1. Not only will the end surface of the yoke 1 be in contact and friction with the cylindrical moving plate 2, but the rotor 6 located between the yoke 1 and the cylindrical moving plate 2 will also be squeezed, and braking friction will also be generated between the multiple rotors 6, thereby greatly improving the braking torque.

[0021] like Figure 2As shown, in this embodiment, friction plates 61 are bonded to both side end faces of the rotor 6; specifically, the friction plate 61 is an annular structure, and the outer diameter of the friction plate 61 is adapted to the outer edge of the rotor 6. The friction force during braking is increased by providing the friction plate 61.

[0022] like Figure 1 and Figure 2 As shown, this embodiment further includes an annular piece 7, which is alternately sleeved on the cylindrical movable plate 2 with the rotor 6, and the end faces of the annular piece 7 are in contact with the end faces of the annular piece 7; specifically, in the power-off state, when the rotor 6 is connected to the cylindrical movable plate 2, and the annular piece 7 is not connected to the cylindrical movable plate 2, the rotor 6 will rotate synchronously with the cylindrical movable plate 2; therefore, when power is supplied, both sides of the rotor 6 will be in frictional contact with the stationary object.

[0023] In order to prevent the ring pieces 7 from moving in the axial direction, a bayonet 11 that fits the outer diameter of the ring pieces 7 is opened on the inner hole wall of the yoke 1, and the spacing between two adjacent ring pieces 7 is relatively uniform.

[0024] This embodiment further includes connecting screws 5, a flange 3 and a spring sheet 4. The two ends of the spring sheet 4 are respectively connected to the flange 3 and the cylindrical movable plate 2. The connecting screws 5 pass through the cylindrical movable plate 2, the spring sheet 4 and the flange 3 in sequence. Specifically, the cylindrical movable plate 2 and the flange 3 form an integrated structure that rotates synchronously with the motor shaft. When the yoke 1 is energized, the cylindrical movable plate 2 is adsorbed to one side of the yoke 1, and the spring sheet 4 will stretch.

[0025] It is worth noting that if Figure 1 As shown, a tightening screw hole 31 is provided on the side of the flange 3, and the tightening screw hole 31 is arranged along the radial direction of the flange 3. Specifically, when the motor shaft is inserted into the inner hole of the flange 3, the locking screw is screwed out from the tightening screw hole 31 and tightly connected to the surface of the motor shaft.

[0026] Optionally, a spline connection is adopted between the multiple rotors 6 and the cylindrical moving plate 2 .

[0027] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-rotor (6) electric brake, comprising a magnetic yoke (1), characterized in that: It also includes a cylindrical moving plate (2), one end of which is inserted into the inner hole of the magnetic yoke (1), and at least two rotors (6) are sleeved on the cylindrical moving plate (2); The plurality of rotors (6) are clamped between the end surface of the magnetic yoke (1) and the end surface of the cylindrical moving plate (2).

2. The multi-rotor (6) electric brake according to claim 1, characterized in that: Friction plates (61) are bonded to both end surfaces of the rotor (6).

3. The multi-rotor (6) electric brake according to claim 1, characterized in that: It also includes an annular plate (7), wherein the annular plate (7) and the rotor (6) are alternately sleeved on the cylindrical moving plate (2), and the end faces of the annular plate (7) are in contact with the end faces of the annular plate (7).

4. The multi-rotor (6) electric brake according to claim 3, characterized in that: The inner hole wall of the magnetic yoke (1) is provided with a bayonet (11) adapted to be snapped into the outer diameter of the ring sheet (7).

5. The multi-rotor (6) electric brake according to claim 1, characterized in that: It also includes a connecting screw (5), a flange (3) and a spring sheet (4), wherein the two ends of the spring sheet (4) are respectively connected to the flange (3) and the cylindrical movable plate (2), and the connecting screw (5) passes through the cylindrical movable plate (2), the spring sheet (4) and the flange (3) in sequence.

6. The multi-rotor (6) electric brake according to claim 5, characterized in that: A tightening screw hole (31) is provided on the side surface of the flange (3), and the tightening screw hole (31) is arranged along the radial direction of the flange (3).

7. The multi-rotor (6) electric brake according to claim 1, characterized in that: The rotor (6) and the cylindrical moving plate (2) are connected by a spline.

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