Torque-adjustable electromagnetic brake

Abstract

The torque-adjustable electromagnetic brake comprises a magnetic shell, a stator and a rotor, the stator and the rotor are arranged in the magnetic shell, a friction plate is fixedly arranged on the rotor, a flange is arranged on one side of the rotor, and the friction plate can be tightly attached to the flange so that friction force can be generated between the friction plate and the flange to establish a braking state; a pin is further slidably arranged on the magnetic shell, the pin is provided with a large-diameter end and a small-diameter end, the small-diameter end is sleeved with a spring, one end of the spring abuts against the large-diameter end, and the other end of the spring is fixedly connected with the rotor; an adjusting ring is further movably arranged on the magnetic shell and can drive the pin to slide in the magnetic shell. The beneficial effects of the utility model are mainly reflected in that the position of the adjusting ring on the magnet is adjusted to drive the pin to slide in the magnetic shell and control the acting force applied to the rotor to be changed, thereby avoiding the situation that the braking force is too large or too small when the friction plate is in contact with the flange, improving the braking accuracy, improving the comfort level, and reducing the cost. And the method has relatively wide applicability.

Description

Technical Field

[0001] The utility model relates to an electromagnetic safety brake, and in particular to a torque adjustable electromagnetic brake. Background Art

[0002] The spring-loaded electromagnetic safety brake is one of many types of brakes. Due to its small size, large braking torque, and convenient installation and debugging, it is widely used in many fields such as lifting equipment, ports, metallurgy, battery cars, and wind power generation.

[0003] For example, the authorized announcement number CN210686770U discloses a self-balancing brake that can prevent harmful friction caused by vertical installation, including a flange, a rotor, an armature, and a stator arranged in sequence from near to far from the motor. A coil and a brake spring are embedded on the end face of the stator close to the armature. A shaft sleeve is connected inside the rotor. The shaft sleeve is provided with a reduced-diameter protruding end that extends into the flange. A support spring is sleeved on the reduced-diameter protruding end of the shaft sleeve. The rotor is supported on the support spring. The support spring is clamped between the rotor and the support component. The support component is clamped on the reduced-diameter protruding end of the shaft sleeve. However, the force exerted by the rotor on the flange is always constant and cannot be adjusted accordingly according to actual needs, resulting in situations where the braking force is too strong or too loose, affecting the braking effect, and having relatively wide limitations. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a torque adjustable electromagnetic brake.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A torque adjustable electromagnetic brake includes a magnetic shell, and a stator and a rotor arranged inside it. A friction plate is fixedly provided on the rotor. A flange is provided on one side of the rotor. The friction plate can be closely attached to the flange to generate frictional force between the two to establish a braking state. A pin is also slidably provided on the magnetic shell. The pin has a large-diameter end and a small-diameter end. A spring is sleeved on the small-diameter end. One end of the spring abuts against the large-diameter end, and the other end is fixedly connected to the rotor. An adjusting ring is also movably provided on the magnetic shell. The adjusting ring can drive the pin to slide inside the magnetic shell.

[0007] Preferably, an external thread is provided on the connecting end of the adjusting ring, and an internal thread adapted to the external thread is provided on the magnetic shell.

[0008] Preferably, the stator at least includes a coil box fixedly provided on the inner wall of the magnetic shell, and a coil is provided inside the coil box.

[0009] Preferably, the stator further includes a stationary armature, which is fixedly arranged on one side of the magnetic shell and is close to the coil.

[0010] Preferably, the rotor includes at least a moving armature, which has a cylindrical end and a limiting end. The cylindrical end and the limiting end are integrally formed. The limiting end is slidably arranged in the limiting groove of the magnetic shell, and the friction plates are fixedly arranged on both sides of the limiting end.

[0011] Preferably, the magnetic shell, the flange, the stationary armature and the moving armature are coaxially assembled, and the magnetic shell, the stationary armature and the flange are locked together by connecting bolts.

[0012] Preferably, the spring is a wave spring.

[0013] The beneficial effects of the present utility model are mainly reflected in:

[0014] 1. Exquisite design. By adjusting the position of the adjusting ring on the magnet, the pin can be driven to slide in the magnetic shell, controlling the force applied to the rotor to change, avoiding the situation that the braking force is too large or too small when the friction plate contacts the flange, improving the braking accuracy, enhancing the comfort, and having wide applicability.

[0015] 2. The inner thread and the outer thread are connected in cooperation with each other, with simple and convenient operation, high stability, easy disassembly, replacement and maintenance, and greatly improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution of the present utility model will be further described below with reference to the accompanying drawings:

[0017] Figure 1 : Cross-sectional view of the preferred embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present utility model, and any structural, methodical, or functional changes made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0021] As Figure 1 shown, the present utility model discloses a torque adjustable electromagnetic brake, which includes a magnetic shell 1 and a stator and a rotor 2 arranged therein. The rotor 2 can rotate relative to the stator. The structure of the rotor rotating relative to the stator is prior art, and the present utility model will not elaborate too much here, and all belong to the protection scope of the present utility model.

[0022] In the present utility model, a friction plate 3 is fixedly arranged on the rotor 2, and a flange 4 is arranged on one side of the rotor 2. The friction plate 3 can be in close contact with the flange 4 to generate frictional force to establish a braking state. This braking method is prior art and is disclosed in, for example, the authorized publication numbers CN208348363U, CN208503313U, etc. Therefore, the present utility model will not elaborate too much here.

[0023] A pin 5 is also slidably arranged on the magnetic shell 1. The pin 5 has a large diameter end 51 and a small diameter end 52. A spring 53 is sleeved on the small diameter end 52. One end of the spring 53 abuts against the large diameter end 51, and the other end is fixedly connected to the rotor 2. An adjusting ring 6 is also movably arranged on the magnetic shell 1. The adjusting ring 6 can drive the pin 5 to slide in the magnetic shell 1. In the above, by adjusting the position of the adjusting ring 6 on the magnet 1, the pin 5 can be driven to slide in the magnetic shell 1, and the acting force applied to the rotor 2 can be controlled to change, avoiding the situation that the braking force is too large or too small when the friction plate 3 contacts the flange, improving the braking accuracy and comfort, and having a wide applicability.

[0024] In this preferred embodiment, an external thread is arranged on the connecting end 61 of the adjusting ring 6, and an internal thread adapted to the external thread is arranged on the magnetic shell 1. The above uses the mutual cooperation of the internal thread and the external thread for connection, which is simple and convenient to operate, has high stability, is convenient for disassembly, replacement and maintenance, and greatly improves the work efficiency. The above is the most preferred embodiment of the present utility model. Of course, other connection methods, such as clamping, pressing, etc., can also be adopted, and all belong to the protection scope of the present utility model, and will not be elaborated too much here.

[0025] The stator at least includes a coil box 11 fixedly arranged on the inner wall of the magnetic shell 1. A coil 12 is arranged in the coil box 11. The stator also includes a fixed armature 13. The fixed armature 13 is fixedly arranged on one side of the magnetic shell 1 and is close to the coil 12. The rotor 2 at least includes a moving armature 21. The moving armature 21 has a cylindrical end 22 and a limiting end 23. The cylindrical end 22 and the limiting end 23 are integrally formed. The limiting end 23 is slidably arranged in the limiting groove 24 of the magnetic shell 1. The friction plate 3 is fixedly arranged on both sides of the limiting end 23.

[0026] The magnetic shell 1, flange 4, fixed armature 13 and moving armature 21 are coaxially assembled, and the magnetic shell 1, fixed armature 13 and flange 4 are locked together by connecting bolts 7 to achieve quick connection. In addition, in this preferred embodiment, the spring 53 is a wave spring. Of course, it can also be a snap spring or the like, all of which fall within the protection scope of the present utility model and will not be elaborated here.

[0027] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and 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.

[0028] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent embodiments or changes made without departing from the technical spirit of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A torque-adjustable electromagnetic brake, comprising a magnetic shell (1) and a stator and a rotor (2) arranged therein, characterized in that: A friction plate (3) is fixedly provided on the rotor (2), and a flange (4) is provided on one side of the rotor (2). The friction plate (3) can be in close contact with the flange (4) so ​​that the two generate friction to establish a braking state. A pin (5) is also slidably provided on the magnetic shell (1). The pin (5) has a large diameter end (51) and a small diameter end (52). A spring (53) is sleeved on the small diameter end (52). One end of the spring (53) abuts against the large diameter end (51), and the other end is fixedly connected to the rotor (2). An adjusting ring (6) is also movably provided on the magnetic shell (1). The adjusting ring (6) can drive the pin (5) to slide inside the magnetic shell (1).

2. The torque-adjustable electromagnetic brake according to claim 1, characterized in that: The connection end (61) of the adjustment ring (6) is provided with an external thread, and the magnetic shell (1) is provided with an internal thread matching the external thread.

3. The torque adjustable electromagnetic brake according to claim 1, characterized in that: The stator comprises at least a coil box (11) fixedly mounted on the inner wall of the magnetic shell (1), wherein a coil (12) is arranged in the coil box (11).

4. The torque-adjustable electromagnetic brake according to claim 3 is characterized in that: The stator further comprises a fixed armature (13), wherein the fixed armature (13) is fixedly arranged on one side of the magnetic shell (1) and is close to the coil (12).

5. The torque-adjustable electromagnetic brake according to claim 2, characterized in that: The rotor (2) comprises at least a movable armature (21), the movable armature (21) having a cylindrical end (22) and a limiting end (23), the cylindrical end (22) and the limiting end (23) being integrally formed, the limiting end (23) being slidably disposed in a limiting groove (24) of the magnetic shell (1), and the friction plate (3) being fixedly disposed on both sides of the limiting end (23).

6. The torque-adjustable electromagnetic brake according to claim 5, characterized in that: The magnetic shell (1), the flange (4), the fixed armature (13) and the movable armature (21) are coaxially assembled, and the magnetic shell (1), the fixed armature (13) and the flange (4) are locked together by connecting bolts (7).

7. The torque-adjustable electromagnetic brake according to claim 1, characterized in that: The spring (53) is a wave spring.

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