Torque-adjustable electromagnetic power-off brake

Abstract

The utility model discloses a torque adjustable electromagnetic power -off brake, torque adjustable electromagnetic power -off brake, including the shell of no. The inside of shell is movably sleeved with the rotating shaft, and the outside fixed sleeve of rotating shaft has the brake wheel. The utility model provides a torque adjustable electromagnetic power -off brake, is provided with the adjusting bolt through setting, when the brake long -term use leads to the wear thickness reduction of friction plate, rotates two adjusting bolts, so that adjusting bolt can drive electromagnetic coil horizontal movement, namely drives friction plate horizontal movement to reach the adjustment effect of the distance between friction plate and brake wheel, namely reaches the adjustment effect of friction plate and brake wheel extrusion pressure, thereby avoids the problem that the brake effect is not good caused by the thickness reduction of friction plate, and further brings the convenience for the maintenance adjustment of brake.

Description

Technical Field

[0001] This utility model relates to the technical field of an adjustable torque electromagnetic power-off brake, specifically an adjustable torque electromagnetic power-off brake. Background Technology

[0002] An electromagnetic power-off brake consists of a core, spring, armature, friction pads, brake disc, and transmission connection device, and is mainly used for braking various types of motors. When energized, the windings of the core generate a magnetic field that attracts the armature. The armature then compresses the spring fixed within the core. When the core is de-energized, the spring ejects the armature, which, through the friction pads, generates braking torque on the brake disc to limit its rotation. The brake disc is connected to the rotor via a transmission connection device, thus restricting the rotation of the motor rotor.

[0003] Chinese Patent CN208764200U discloses an electromagnetic power-off brake, belonging to the field of mechanical technology. It solves the problem of poor braking effect in existing electromagnetic power-off brakes. This electromagnetic power-off brake includes an iron core, an armature and a fixing plate on the iron core, a brake disc between the armature and the fixing plate, and at least one guide post on the fixing plate. One end of the guide post is slidably connected to the iron core. Friction pads are fixedly connected to both the armature and the fixing plate, with two friction pads located at opposite ends of the brake disc. This electromagnetic power-off brake improves the braking effect of the brake.

[0004] The aforementioned patent has some shortcomings: due to the limited and difficult-to-adjust movement of the internal friction pads in the electromagnetic brake, the friction pads need to be replaced immediately when they wear out, resulting in high maintenance costs for the electromagnetic brake. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic power-off brake with adjustable torque to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an adjustable torque electromagnetic power-off brake, comprising a first housing, a rotating shaft movably sleeved inside the first housing, a brake wheel fixedly sleeved outside the rotating shaft, a limiting sleeve fixedly sleeved inside the first housing, a limiting mechanism provided at the bottom of the inner cavity of the limiting sleeve, an electromagnetic coil movably sleeved inside the limiting sleeve, a friction plate movably sleeved on the side of the electromagnetic coil, an adjusting bolt threaded onto the side of the first housing, a sealing ring fixedly sleeved on the top of the first housing, a second housing fixedly sleeved on the top of the first housing, and a sealing mechanism provided on the front of the first housing.

[0007] Preferably, one end of the adjusting bolt is movably sleeved on the side of the electromagnetic coil, and there are two adjusting bolts, which are symmetrically distributed about the axis of rotation.

[0008] Preferably, the limiting mechanism includes a limiting groove, which is formed at the bottom of the inner cavity of the limiting sleeve. A limiting block is fixedly connected to the bottom of the electromagnetic coil, and the limiting block is movably sleeved inside the limiting groove.

[0009] Preferably, the top of the sealing ring is in close contact with the bottom of the second housing, and the sealing ring is made of rubber.

[0010] Preferably, the closing mechanism includes a first positioning block, which is fixedly connected to the front of the second housing, and the second positioning block is fixedly connected to the front of the first housing. The first positioning block has a threaded post threaded into its internal thread.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This torque-adjustable electromagnetic power-off brake, by setting adjustment bolts, when the brake has been used for a long time and the friction pad has worn down and the thickness has decreased, rotating the two adjustment bolts allows the adjustment bolts to drive the electromagnetic coil to move horizontally, that is, to drive the friction pad to move horizontally, thereby achieving the effect of adjusting the distance between the friction pad and the brake wheel, that is, achieving the effect of adjusting the squeezing force between the friction pad and the brake wheel, thus avoiding the problem of poor braking effect caused by the reduction of friction pad thickness, and thus bringing convenience to the maintenance and adjustment of the brake; In addition, this torque-adjustable electromagnetic power-off brake also features a closed mechanism. When the brake needs to be assembled and fixed, the electromagnetic coil is fixed inside the first housing. At this time, the threaded column is rotated, which causes the threaded column to drive the second housing to be tightly pressed against the top of the first housing through the first positioning block. This achieves the fixing effect between the first and second housings, thereby achieving the assembly and fixing effect of the brake, which brings convenience to the installation and disassembly of the brake. Attached Figure Description

[0012] Figure 1 A schematic diagram of a preferred embodiment of an adjustable torque electromagnetic power-off brake provided by this utility model; Figure 2 This is a front view of the electromagnetic coil in the structure of this utility model; Figure 3 This is a front view of the structure of this utility model.

[0013] In the diagram: 1. Housing No. 1; 2. Rotating shaft; 3. Brake wheel; 4. Limiting sleeve; 5. Limiting mechanism; 51. Limiting groove; 52. Limiting block; 6. Electromagnetic coil; 7. Friction plate; 8. Adjusting bolt; 9. Sealing ring; 10. Housing No. 2; 11. Closing mechanism; 111. Positioning block No. 1; 112. Positioning block No. 2; 113. Threaded column. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0015] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0016] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Please see Figure 1-3An embodiment of this utility model provides: an adjustable torque electromagnetic power-off brake, comprising a first housing 1, a rotating shaft 2 movably sleeved inside the first housing 1, a brake wheel 3 fixedly sleeved outside the rotating shaft 2, a limiting sleeve 4 fixedly sleeved inside the first housing 1, a limiting mechanism 5 provided at the bottom of the inner cavity of the limiting sleeve 4, an electromagnetic coil 6 movably sleeved inside the limiting sleeve 4, a friction plate 7 movably sleeved on the side of the electromagnetic coil 6, an adjusting bolt 8 threadedly sleeved on the side of the first housing 1, a sealing ring 9 fixedly sleeved on the top of the first housing 1, a second housing 10 fixedly sleeved on the top of the first housing 1, and a sealing mechanism 11 provided on the front of the first housing 1.

[0020] One end of the adjusting bolt 8 is movably sleeved on the side of the electromagnetic coil 6, and there are two adjusting bolts 8, which are symmetrically distributed about the rotation axis 2. By setting the adjusting bolts 8, when the brake is used for a long time and the friction plate 7 wears and the thickness is reduced, rotating the two adjusting bolts 8 will cause the electromagnetic coil 6 to move horizontally, that is, to move the friction plate 7 horizontally. This achieves the effect of adjusting the distance between the friction plate 7 and the brake wheel 3, that is, adjusting the squeezing pressure between the friction plate 7 and the brake wheel 3. This avoids the problem of poor braking effect caused by the reduction of the friction plate 7 thickness, and brings convenience to the maintenance and adjustment of the brake.

[0021] The limiting mechanism 5 includes a limiting groove 51, which is opened at the bottom of the inner cavity of the limiting sleeve 4. A limiting block 52 is fixedly connected to the bottom of the electromagnetic coil 6, and the limiting block 52 is movably sleeved inside the limiting groove 51. By setting the limiting mechanism 5, when the distance between the friction plate 7 and the brake wheel 3 is adjusted, the limiting block 52 can limit the horizontally moving electromagnetic coil 6 through the limiting groove 51, so as to avoid the electromagnetic coil 6 tilting or deviating when moving horizontally, thereby improving the stability of the electromagnetic coil 6 when moving horizontally, that is, improving the stability of the friction plate 7 when adjusting its position.

[0022] The top of the sealing ring 9 is in close contact with the bottom of the second housing 10, and the sealing ring 9 is made of rubber. By setting the sealing ring 9, when the brake is assembled and closed, the sealing ring 9 can fill the gap between the first housing 1 and the second housing 10, so as to avoid the problem of dust on the outside of the first housing 1 entering the interior with air and becoming dirty and difficult to clean, thereby improving the cleanliness of the brake interior.

[0023] The closing mechanism 11 includes a first positioning block 111, which is fixedly connected to the front of the second housing 10. The front of the first housing 1 is fixedly connected to a second positioning block 112, and a threaded post 113 is threaded into the inside of the first positioning block 111. By setting up the closing mechanism 11, when the brake needs to be assembled and fixed, the electromagnetic coil 6 is fixed inside the first housing 1. At this time, the threaded post 113 is rotated, so that the threaded post 113 can drive the second housing 10 to be tightly pressed against the top of the first housing 1 through the first positioning block 111, thereby achieving the fixing effect between the first housing 1 and the second housing 10, and thus achieving the assembly and fixing effect of the brake, thereby bringing convenience to the installation and disassembly of the brake.

[0024] Working principle: When the brake wears down and the friction pad 7 due to prolonged use, rotating the two adjusting bolts 8 causes the electromagnetic coil 6 to move horizontally, which in turn moves the friction pad 7 horizontally. This adjusts the distance between the friction pad 7 and the brake wheel 3, thus adjusting the pressure between them. This avoids the problem of poor braking performance caused by reduced friction pad thickness, and facilitates brake maintenance and adjustment. During the adjustment of the distance between the friction pad 7 and the brake wheel 3, the limiting block 52 limits the horizontal movement of the electromagnetic coil 6 through the limiting groove 51, preventing tilting or offset during horizontal movement. This improves the stability of the electromagnetic coil 6 during horizontal movement, thus enhancing the stability of the friction pad 7 position adjustment. Qualitatively, during the assembly and sealing of the brake, the sealing ring 9 fills the gap between the first housing 1 and the second housing 10, preventing dust from entering the first housing 1 along with air and causing dirt that is difficult to clean, thereby improving the cleanliness of the brake's interior. When the brake needs to be assembled and fixed, the electromagnetic coil 6 is fixed inside the first housing 1. At this time, the threaded column 113 is rotated, so that the threaded column 113 drives the second housing 10 to be tightly pressed against the top of the first housing 1 through the first positioning block 111, thereby achieving the fixing effect of the first housing 1 and the second housing 10, and thus achieving the assembly and fixing effect of the brake, thereby bringing convenience to the installation and disassembly of the brake. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A torque-adjustable electromagnetic power-off brake, characterized in that: The device includes a first housing, inside which a rotating shaft is movably fitted, and outside which a brake wheel is fixedly fitted, and inside which a limit sleeve is fixedly fitted, with a limit mechanism provided at the bottom of the inner cavity of the limit sleeve, and inside which an electromagnetic coil is movably fitted, with a friction plate movably fitted to the side of the electromagnetic coil, and an adjusting bolt threaded onto the side of the first housing, and a sealing ring fixedly fitted to the top of the first housing, and a second housing is fixedly fitted to the top of the first housing, with a sealing mechanism provided on the front of the first housing.

2. The torque-adjustable electromagnetic power-off brake according to claim 1, characterized in that: One end of the adjusting bolt is movably sleeved on the side of the electromagnetic coil, and there are two adjusting bolts, which are symmetrically distributed about the axis of rotation.

3. The torque-adjustable electromagnetic power-off brake according to claim 1, characterized in that: The limiting mechanism includes a limiting groove, which is formed at the bottom of the inner cavity of the limiting sleeve. A limiting block is fixedly connected to the bottom of the electromagnetic coil, and the limiting block is movably sleeved inside the limiting groove.

4. The torque-adjustable electromagnetic power-off brake according to claim 1, characterized in that: The top of the sealing ring is in close contact with the bottom of the second housing, and the sealing ring is made of rubber.

5. The torque-adjustable electromagnetic power-off brake according to claim 1, characterized in that: The closing mechanism includes a first positioning block, which is fixedly connected to the front of the second housing. The second positioning block is fixedly connected to the front of the first housing, and a threaded post is threaded into the internal thread of the first positioning block.

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