Brake-adjustable electromagnetic power-off brake

Abstract

The utility model belongs to the technical field of brakes, and particularly relates to a brake-adjustable electromagnetic power-off brake, which comprises a stator, an armature, a friction plate and an end cover, the stator is detachably connected with the end cover through a bolt, the armature and the friction plate are clamped and mounted between opposite surfaces of the stator and the end cover, and the friction plate is positioned between the armature and the end cover. According to the electromagnetic power-off brake with the adjustable braking, by controlling the number of the spring bodies in each circle to make contact with the armature and making contact with the armature, the pressure borne by the armature can be adjusted, the spring bodies move in the direction of the end cover, and at the moment, the stress of the spring bodies is increased; when the electromagnetic power-off brake works, the friction plate can be more tightly attached to the end cover, the friction force between the friction plate and the end cover is increased, the braking force can be adjusted, and the braking strength of the electromagnetic power-off brake is in an adjustable state and can be flexibly adjusted according to actual application requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to an electromagnetic power-off brake with adjustable braking. Background Art

[0002] In the fields of industrial automation and mechanical control, electromagnetic brakes, as important actuators, are widely used in machinery in metallurgy, construction, chemicals, food processing, machine tools, printing, and packaging. They play an irreplaceable role in applications requiring rapid braking upon power failure. However, conventional electromagnetic brakes have significant limitations in terms of brake strength adjustability, limiting their application in more complex operating conditions.

[0003] Once the traditional electromagnetic power-off brake is designed, its braking strength is relatively fixed and difficult to flexibly adjust according to actual needs. This design results in the brake being unable to provide optimal braking effect when responding to different loads or working conditions, affecting the overall performance and efficiency of the equipment. Since the braking strength cannot be adjusted, when the equipment requires a different braking force, the entire brake often needs to be replaced, which not only increases maintenance costs but also affects the continuous operation time of the equipment. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the inventors have conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0005] Specifically, the technical problem to be solved by the present invention is to provide an electromagnetic power-off brake with adjustable braking to solve the problem that once the current traditional electromagnetic power-off brake is designed, its braking strength is relatively fixed and difficult to flexibly adjust according to actual needs. This design causes the brake to be unable to provide the optimal braking effect when responding to different loads or working conditions, affecting the overall performance and efficiency of the equipment.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] An electromagnetic brake with adjustable braking, comprising a stator, an armature, a friction plate and an end cover, wherein the stator and the end cover are detachably connected by bolts, the armature and the friction plate are clamped and mounted between the opposing surfaces of the stator and the end cover, and the friction plate is located between the armature and the end cover;

[0008] A coaxial reserved hole is provided at the center of the stator, a wire cavity is provided on one end surface of the stator close to the end cover, and a coil is installed in the inner cavity of the wire cavity;

[0009] The stator is provided with a spring cavity on both the outer side and the inner side of one end close to the end cover. An elastic component is installed in the inner cavity of the spring cavity, and the elastic end of the elastic component contacts the armature, thereby promoting the fit between the friction plate and the end cover.

[0010] As an improved technical solution, the elastic component includes a micro push rod fixed inside the spring cavity, a connecting block is fixedly installed on the movable end of the micro push rod, and a spring body is fixed on the end of the connecting block away from the micro push rod.

[0011] As an improved technical solution, the stator has six fixing holes on the outward edge near one end of the end cover, and six fixing slots on the outward edge of one end of the end cover. Hollow sleeves for fixing bolts to pass through are placed on three of the fixing holes.

[0012] As an improved technical solution, six positioning slots are formed at equal intervals on the peripheral surface of the armature, and the hollow sleeve passes through the inner cavity of the positioning slots to limit the position of the armature.

[0013] As an improved technical solution, a limiting groove adapted to the friction plate is provided on a side of the armature close to the end cover, and an end of the second clamping cavity close to the armature is located in the inner cavity of the limiting groove.

[0014] As an improved technical solution, a first clamping cavity is opened at the center of one end of the armature, and a second clamping cavity is opened at the center of one end of the friction plate, and the size of the second clamping cavity is smaller than that of the first clamping cavity.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. In the present invention, the extension and retraction of the micro push rod can retract the spring body into the interior of the spring cavity, thereby releasing the contact between the spring body and the armature. Two turns of spring body are provided, and the number of spring bodies in each turn that contacts the armature and resists the armature can be controlled, thereby adjusting the pressure on the armature. Therefore, the friction force between the friction plate and the end cover can be adjusted to achieve the adjustment of the braking force.

[0017] 2. In the present invention, the micro push rod is extended to move the spring body toward the end cover. At this time, the stress of the spring body increases, which will cause the friction plate to fit more closely with the end cover, thereby increasing the friction between the friction plate and the end cover and also realizing the adjustment of the braking force.

[0018] 3. The utility model controls the number of spring bodies in each circle that come into contact with the armature and resist the armature, thereby adjusting the pressure on the armature. The spring body moves toward the end cover. At this time, the stress of the spring body increases, which will cause the friction plate to fit more closely with the end cover, increasing the friction between the friction plate and the end cover, and also achieving the adjustment of the braking force. The braking strength of the electromagnetic power-off brake is in an adjustable state and can be flexibly adjusted according to actual application requirements, providing the best braking effect when dealing with different loads or working conditions. When the equipment requires different braking forces, there is no need to replace the entire brake, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0020] Figure 1 This is a schematic structural diagram of the explosion of the electromagnetic power-off brake with adjustable braking according to the utility model.

[0021] Figure 2 The diagram is a schematic diagram of the exploded structure of the armature and friction plate of the electromagnetic power-off brake with adjustable braking according to the utility model.

[0022] Figure 3 The utility model is a schematic structural diagram of the stator of the electromagnetic power-off brake with adjustable braking.

[0023] Figure 4 This is a structural diagram of the elastic component of the electromagnetic power-off brake with adjustable braking according to the utility model.

[0024] Description of reference numerals:

[0025] 1. Stator; 11. Reserved hole; 12. Coil; 13. Wire cavity; 14. Spring cavity; 15. Fixing hole; 16. Hollow sleeve; 2. Armature; 21. Limiting groove; 22. Positioning slot; 23. Card cavity 1; 3. Friction plate; 31. Card cavity 2; 4. End cover; 41. Fixing slot; 5. Elastic component; 51. Micro push rod; 52. Connecting block; 53. Spring body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0029] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0030] like Figures 1 to 4 As shown together, this embodiment provides an electromagnetic brake with adjustable braking, which includes a stator 1, an armature 2, a friction plate 3 and an end cover 4. The stator 1 and the end cover 4 are detachably connected by bolts. The armature 2 and the friction plate 3 are clamped and installed between the opposite surfaces of the stator 1 and the end cover 4, and the friction plate 3 is located between the armature 2 and the end cover 4.

[0031] A coaxial reserved hole 11 is provided at the center of the stator 1, and a wire cavity 13 is provided on one end surface of the stator 1 close to the end cover 4. A coil 12 is installed in the inner cavity of the wire cavity 13.

[0032] A spring cavity 14 is provided on both the outer and inner sides of the stator 1 near the end cover 4. An elastic component 5 is installed in the inner cavity of the spring cavity 14, and the elastic end of the elastic component 5 contacts the armature 2, promoting the fit between the friction plate 3 and the end cover 4.

[0033] By controlling the number of spring bodies 53 in each circle that come into contact with the armature 2 and resist the armature 2, the pressure on the armature 2 can be adjusted. The spring body 53 moves toward the end cover 4. At this time, the stress of the spring body 53 increases, which will cause the friction plate 3 to fit more closely with the end cover 4, increasing the friction between the friction plate 3 and the end cover 4, and also achieving the adjustment of the braking force. The braking strength of the electromagnetic power-off brake is in an adjustable state and can be flexibly adjusted according to actual application requirements, providing the best braking effect when dealing with different loads or working conditions. When the equipment requires different braking forces, there is no need to replace the entire brake, which is convenient and quick.

[0034] like Figure 1 、 Figures 3 and 4 As shown together, in this embodiment, the elastic component 5 includes a micro push rod 51 fixed inside the spring cavity 14, a connecting block 52 is fixedly installed on the movable end of the micro push rod 51, and a spring body 53 is fixed on the end of the connecting block 52 away from the micro push rod 51.

[0035] The extension and retraction of the micro push rod 51 can retract the spring body 53 into the interior of the spring chamber 14, so that the spring body 53 can be released from contact with the armature 2. Two circles of spring body 53 are provided, and the number of spring bodies 53 in each circle that are in contact with the armature 2 and resist the armature 2 can be controlled, so that the pressure on the armature 2 can be adjusted, so that the fitting friction between the friction plate 3 and the end cover 4 can be adjusted to achieve the adjustment of the braking force. At the same time, the micro push rod 51 is extended to move the spring body 53 toward the end cover 4. At this time, the stress of the spring body 53 increases, which will cause the friction plate 3 to fit more closely with the end cover 4, increase the friction between the friction plate 3 and the end cover 4, and also achieve the adjustment of the braking force.

[0036] like Figure 1 and Figure 3 As shown together, in this embodiment, six fixing holes 15 are formed on the outward edge of the stator 1 near the end cover 4, four fixing through-holes are formed on the inward edge of the stator 1 near the end cover 4, and six fixing through-grooves 41 are formed on the outward edge of one end of the end cover 4. The six fixing through-grooves 41 correspond to the six fixing holes 15, and hollow sleeves 16 for fixing bolts to pass through are placed on the three fixing holes 15.

[0037] like Figure 2 As shown, in this embodiment, six positioning slots 22 are formed at equal intervals on the peripheral surface of the armature 2 , and the hollow sleeve 16 passes through the inner cavity of the positioning slots 22 to limit the position of the armature 2 .

[0038] like Figure 2As shown, in this embodiment, a limiting groove 21 adapted to the friction plate 3 is provided on one side of the armature 2 close to the end cover 4 , and the end of the second clamping cavity 31 close to the armature 2 is located in the inner cavity of the limiting groove 21 .

[0039] like Figure 2 As shown, in this embodiment, a first clamping cavity 23 is opened at the center of one end of the armature 2, and a second clamping cavity 31 is opened at the center of one end of the friction plate 3, and the size of the second clamping cavity 31 is smaller than that of the first clamping cavity 23.

[0040] When in use, when the coil 12 is not energized, it cannot be magnetically attracted to the armature 2 and the friction plate 3. Under the elastic resistance of the spring body 53, the spring body 53 pushes the armature 2 and the friction plate 3 toward the end cover 4, so that the friction plate 3 and the end cover 4 are tightly fitted together. The fitting of the friction plate 3 and the end cover 4 realizes braking.

[0041] When the coil 12 is energized, a magnetic force is generated, which attracts the armature 2, causing the armature 2 to move toward the stator 1 and compress the spring body 53. At this time, the friction plate 3 is released from the contact with the end cover 4, and the braking state is released.

[0042] It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention. In addition, it should be understood that after reading the technical content of the present invention, those skilled in the art may make various changes, modifications and / or variations to the present invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims of this application.

Claims

1. The electromagnetic brake with adjustable braking is characterized by: The invention comprises a stator (1), an armature (2), a friction plate (3) and an end cover (4), wherein the stator (1) and the end cover (4) are detachably connected by bolts, the armature (2) and the friction plate (3) are clamped and installed between the opposite surfaces of the stator (1) and the end cover (4), and the friction plate (3) is located between the armature (2) and the end cover (4); A coaxial reserved hole (11) is provided at the center of a circle on the stator (1), a wire cavity (13) is provided on an end surface of the stator (1) close to the end cover (4), and a coil (12) is installed in the inner cavity of the wire cavity (13); The stator (1) is provided with a spring cavity (14) on both the outer side and the inner side of one end close to the end cover (4). An elastic component (5) is installed in the inner cavity of the spring cavity (14), and the elastic end of the elastic component (5) contacts the armature (2), thereby causing the friction plate (3) to fit with the end cover (4).

2. The electromagnetic brake with adjustable braking according to claim 1, characterized in that: The elastic component (5) comprises a micro push rod (51) fixed inside the spring cavity (14), a connecting block (52) being fixedly mounted on the movable end of the micro push rod (51), and a spring body (53) being fixed on one end of the connecting block (52) away from the micro push rod (51).

3. The electromagnetic brake with adjustable braking according to claim 2, characterized in that: The stator (1) is provided with six fixing holes (15) on an outward edge near one end of the end cover (4), and six fixing slots (41) are provided on an outward edge at one end of the end cover (4). Hollow sleeves (16) for fixing bolts to pass through are placed on three of the fixing holes (15).

4. The electromagnetic brake with adjustable braking according to claim 3, characterized in that: The peripheral surface of the armature (2) is provided with six positioning slots (22) at equal intervals, and the hollow sleeve (16) passes through the inner cavity of the positioning slots (22) to limit the position of the armature (2).

5. The electromagnetic brake with adjustable braking according to claim 4, characterized in that: A limiting groove (21) adapted to the friction plate (3) is provided on a side of the armature (2) close to the end cover (4).

6. The electromagnetic brake with adjustable braking according to claim 5, characterized in that: A first clamping cavity (23) is provided at the center of one end of the armature (2), and a second clamping cavity (31) is provided at the center of one end of the friction plate (3). The size of the second clamping cavity (31) is smaller than the size of the first clamping cavity (23). The second clamping cavity (31) is located in the inner cavity of the limiting groove (21) near one end of the armature (2).

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