High-stability electromagnetic brake convenient to disassemble and assemble

Abstract

The invention discloses a high-stability electromagnetic brake convenient to disassemble and assemble, and relates to the technical field of brakes. Comprising a shell, a base is installed on the top of the shell through a connecting shaft, a rotating shaft channel is formed between the base and the top of the shell in a penetrating mode, an armature is arranged on the portion, located on the surface of the rotating shaft channel, between the base and the shell in a sleeving mode, an electromagnetic coil is arranged in the shell, and an installation mechanism is arranged at the bottom of the shell. A compensation assembly is arranged at the top of the armature, a rotating disc is rotationally connected to the position, located on the surface of the periphery of the rotating shaft channel, in the cavity in the device shell, a connecting rod is arranged in the armature in a limiting mode, an unlocking assembly is arranged at the bottom of the shell, and the armature and the shell are installed easily and can be operated by one person; gaps in all directions between the armature and the electromagnetic coil are ensured to be the same, adjustment is easy, and automatic compensation after the brake pad is abraded is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of brakes, in particular to a high-stability electromagnetic brake that is easy to assemble and disassemble. Background Art

[0002] Brakes are widely used in metallurgy, construction, chemical industry, food, machinery, transport ships, and packaging as braking devices for related mechanical rotating power equipment (generally motors). Among them, the power-off electromagnetic brake (also known as the "power-off brake") is a safety device that relies on electromagnetic force to release and automatically brake when the power is off. Its core feature is that it brakes immediately in the event of a power outage or fault to ensure that the equipment stops moving. It is often used in situations where safety protection is required, especially in the event of an unexpected power outage, to effectively avoid accidents and ensure the safety of personnel and equipment.

[0003] When installing the existing power-off electromagnetic brake, the armature needs to be pressed to overcome the elastic force of the spring, so that it is gradually close to the electromagnetic coil, and then fastened with bolts. This often requires the cooperation of multiple people for installation, which is inconvenient. Secondly, the distance between the armature and the electromagnetic coil needs to be evenly adjusted. Multiple bolts need to be turned and adjusted one by one with a feeler gauge to ensure that the gaps in all directions are the same. This is cumbersome to adjust. At the same time, as the use time increases, the brake pads on the armature will wear out, which increases the distance between the brake pads and the friction disc, resulting in a decrease in braking performance.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the original high-stability electromagnetic brake. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-stability electromagnetic brake that is easy to disassemble and assemble, so as to solve the problems in the above-mentioned background technology that the installation between the armature and the electromagnetic coil is inconvenient, the gap adjustment is cumbersome, and the brake pads on the armature will wear, which increases the distance between the brake pads and the friction disc, resulting in weakened braking performance. The technical solution of the present invention addresses the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electromagnetic brake with high stability that is easy to assemble and disassemble, comprising a housing, a base mounted on the top of the housing via a connecting shaft, a shaft passage extending through the middle of the base and the top of the housing, an armature sleeved on the surface of the shaft passage between the base and the housing, a friction disk sleeved above the armature, an electromagnetic coil disposed within the housing, a mounting mechanism disposed at the bottom of the housing, and a compensation assembly disposed on the top of the armature; The mounting mechanism includes a device shell fixedly connected to the bottom of the shell body, a rotating disk is rotatably connected to the outer surface of the rotating shaft channel in the internal cavity of the device shell, a gear is provided in the internal cavity of the device shell at the periphery of the rotating disk, the top of the gear is rotatably connected to the top of the internal cavity of the device shell, a ratchet is fixedly connected in the groove at the bottom of the rotating disk, a pawl is provided at the bottom of the internal cavity of the device shell corresponding to the ratchet position, the pawl is rotatably connected to the bottom of the internal cavity of the device shell by a torsion spring, a connecting rod is provided for limiting the internal position of the armature, the bottom of the connecting rod extends into the internal cavity of the device shell, and is threadedly connected to the internal part of the gear, and an unlocking component is provided at the bottom of the shell.

[0007] Preferably, the unlocking assembly includes a resistance rod, which is slidably mounted inside the device shell, the top of the resistance rod extends into the groove at the bottom of the rotating disk, the bottom of the resistance rod extends out of the bottom of the device shell, and is provided with a pressing rod, and both sides of the resistance rod slide within the cavity below the rotating disk inside the device shell, and a first spring is fixedly connected to the top of the cavity below the rotating disk, and the bottom of the first spring is fixedly connected to both sides of the resistance rod, and a resistance block is fixedly connected to the position of the top of the resistance rod on the other side of the pawl.

[0008] Preferably, the compensation component includes a brake pad, which is slidably mounted in a top groove of the armature near one end of the rotating shaft channel, and the bottom ends of the inner portion of the top groove of the armature are fixedly connected to the limit rods and extend into the interior of the brake pad, and a movable plate is slidably mounted in the cavity on both sides of the limit rod inside the brake pad, and a second spring is fixedly connected to the side of the movable plate away from the limit rod, and the other end of the second spring is connected to the inner wall of the cavity on both sides of the limit rod, and the surface of the movable plate on one side close to the limit rod is fixedly connected to the limit teeth, and the bottom of the groove at the top of the armature is located between the limit rods and an electromagnet is provided.

[0009] Preferably, a plurality of accommodating grooves are uniformly provided around the top of the shell, a third spring is fixedly connected to the bottom of the accommodating groove, and the top of the third spring contacts the bottom of the armature.

[0010] Preferably, the top of one end of the rotating disk close to the rotating shaft channel is connected to the inner wall of the cavity inside the device shell through a torsion spring, and the bottom of the ratchet is fixedly connected to a rotating rod, which extends out of the interior of the device shell, and an arc-shaped sliding groove is provided at the bottom of the device shell corresponding to the rotating rod.

[0011] Preferably, a plurality of teeth are evenly arranged on the outer surface of the rotating disk in a circumferential direction, and five groups of gears are evenly arranged on the outer periphery of the rotating disk, and the five groups of gears are meshed with the teeth.

[0012] Preferably, a speed detector is installed on the inner wall of the shaft channel, a limit block is provided on the surface of the shaft sleeve, and a protrusion is provided on the inner wall of the upper area of ​​the shaft channel corresponding to the limit block on the surface of the shaft sleeve.

[0013] Preferably, the contact surface at the top of the contact rod is set as an inclined structure, the contact surfaces on both sides of the limiting rod are set as inclined structures, and the tooth direction of the limiting tooth is opposite to the inclined direction of the contact surfaces on both sides of the limiting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention is provided with a rotating disk, a gear, a ratchet, a pawl and a connecting rod. The connecting rod is placed into the armature and inserted into the interior of the housing. The rotating rod is then rotated to drive the ratchet to rotate. The rotation of the ratchet cooperates with the pawl to drive the rotating disk to rotate. The ratchet and the pawl cooperate to prevent the rotating disk from reversing during the installation process. The rotation of the rotating disk drives the outer gear to rotate, so that the thread in the bottom area of ​​the connecting rod engages with the thread opened inside the gear. The installation between the armature and the housing can be achieved by continuing to rotate the rotating rod. The installation is relatively simple and can be operated by one person. At the same time, the rotating rod can also adjust the gap between the armature and the electromagnetic coil. Since the rotation of the rotating disk can drive the rotation of five sets of gears at the same time, the connecting rod drives the armature to adjust evenly, ensuring that the gap between the armature and the electromagnetic coil in all directions is the same, which is relatively simple to adjust.

[0015] (2) The present invention is provided with a brake pad, a limit rod, a movable plate, a speed detector, a limit tooth and an electromagnet. The speed detector detects the braking time of the rotating shaft during braking. When the braking time is long, the electromagnet is energized to provide a reverse repulsive force to drive the brake pad to move upward, thereby realizing automatic compensation after the brake pad is worn. When the brake pad moves upward, the inclined surfaces at both ends of the limit rod will resist the movement of both sides of the movable plate. After the brake pad moves to the appropriate position, the limit teeth on the movable plate will engage with both sides of the limit rod to prevent the strong pressure from pushing the brake pad back during braking, resulting in brake failure. This effectively solves the problem that the distance between the brake pad and the friction disc increases due to long-term use, resulting in reduced braking performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 Schematic diagram of the internal structure cross section of the present invention; Figure 3 This is a schematic cross-sectional view of the internal structure of the present invention from another angle; Figure 4 For the present invention Figure 3 A schematic diagram of the structure at center A; Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle; Figure 6 This is a schematic diagram of the bottom structure of the device housing of the present invention; Figure 7 This is a schematic diagram of the shaft sleeve structure of the present invention; Figure 8 Schematic diagram of the internal structure of the device shell of the present invention; Figure 9 It is a schematic diagram of the interference rod structure of the present invention.

[0017] In the figure: 1. Housing; 2. Base; 3. Armature; 4. Bushing; 5. Friction disc; 6. Electromagnetic coil; 71. Device housing; 72. Rotating disc; 73. Gear; 74. Ratchet; 75. Pawl; 76. Connecting rod; 771. Interference rod; 772. Interference block; 81. Brake pad; 82. Limit rod; 83. Moving plate; 84. Limit tooth; 85. Electromagnet; 9. Rotating rod; 10. Arc-shaped slide groove; 11. Bump. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0019] See also Figures 1-9 The present invention provides a technical solution: a high-stability electromagnetic brake that is easy to disassemble and assemble, comprising a housing 1, a base 2 being mounted on the top of the housing 1 via a connecting shaft, a shaft channel being provided through the middle of the base 2 and the top of the housing 1, a speed detector being installed on the inner wall of the shaft channel, a limit block being provided on the surface of the shaft sleeve 4, a bump 11 being provided on the upper wall of the region above the shaft channel corresponding to the limit block on the surface of the shaft sleeve 4, an armature 3 being provided on the surface of the shaft channel between the base 2 and the housing 1, and a plurality of accommodating grooves being uniformly provided on the top of the housing 1 along the circumference. A third spring is fixedly connected to the bottom of the accommodating groove, and the top of the third spring contacts the bottom of the armature 3. A friction disk 5 is provided above the armature 3 through a sleeve 4. An electromagnetic coil 6 is provided inside the housing 1. The base 2 is fixed to the front cover of the drive motor by bolts, and then the sleeve 4 is sleeved on the rotating shaft of the drive motor. The friction disk 5 is then sleeved on the outer surface of the sleeve 4, so that the limit block on the outer surface of the sleeve 4 is engaged with the protrusion 11 in the area above the rotating shaft channel. A mounting mechanism is provided at the bottom of the housing 1, and a compensation component is provided on the top of the armature 3. The mounting mechanism includes a device shell 71 fixedly connected to the bottom of the shell 1, a rotating disk 72 is rotatably connected to the outer surface of the rotating shaft channel in the internal cavity of the device shell 71, a gear 73 is provided in the internal cavity of the device shell 71 on the periphery of the rotating disk 72, the top of the gear 73 is rotatably connected to the top of the internal cavity of the device shell 71, a ratchet 74 is fixedly connected to the groove at the bottom of the rotating disk 72, a pawl 75 is provided at the bottom of the internal cavity of the device shell 71 corresponding to the position of the ratchet 74, and the pawl 75 is connected to the bottom of the internal cavity of the device shell 71 through The torsion spring is rotated and connected. The internal limit of the armature 3 is provided with a connecting rod 76. The bottom of the connecting rod 76 extends into the internal cavity of the device shell 71 and is connected to the internal thread of the gear 73. The outer surface of the rotating disk 72 is evenly provided with a number of teeth. The gear 73 is evenly provided with five groups on the outer periphery of the rotating disk 72. The five groups of gears 73 mesh with the teeth. The top of the end of the rotating disk 72 close to the rotating shaft channel is connected to the inner wall of the internal cavity of the device shell 71 through a torsion spring. The bottom of the ratchet 74 is fixedly connected to the rotating rod 9. The rotating rod 9 extends The cam 72 is rotated to rotate the gear 73, and the cam 73 is rotated to rotate the gear 73.

[0020] When the locking cam 75 is in the unlocking state, the locking cam 75 is locked and the locking cam 75 is locked, and the locking cam 75 is locked.

[0021] As an embodiment of the present invention, the compensation component includes a brake pad 81, which is fitted and slidably installed in the top groove of the armature 3 near one end of the rotating shaft channel, and the bottom ends of the top groove of the armature 3 are fixedly connected to the limiting rod 82 and extend into the interior of the brake pad 81. A movable plate 83 is fitted and slidably installed in the cavity on both sides of the limiting rod 82 inside the brake pad 81, and the side of the movable plate 83 away from the limiting rod 82 is fixedly connected to a second spring, and the other end of the second spring is connected to the inner wall of the cavity on both sides of the limiting rod 82. The surface of the movable plate 83 close to the limiting rod 82 is fixedly connected to the limiting tooth 84, and the bottom of the top groove of the armature 3 is located between the limiting rod 82 and an electromagnet is provided. 85. The contact surfaces on both sides of the limit rod 82 are set to an inclined structure, and the tooth direction of the limit tooth 84 is opposite to the inclined direction of the contact surfaces on both sides of the limit rod 82. The speed detector control circuit energizes the electromagnet 85, providing a reverse repulsive force to drive the brake pad 81 to move upward. The upward movement of the brake pad 81 causes the inclined surfaces at both ends of the limit rod 82 to move against the movable plate 83 on both sides. When the brake pad 81 moves to the appropriate position under the action of the repulsive force of the electromagnet 85, the inclined surfaces at both ends of the limit rod 82 will be stuck between the limit teeth 84 on the movable plate 83 and engage with them, thereby fixing the compensated brake pad 81 to prevent the strong pressure from pushing the brake pad 81 back during braking, resulting in brake failure.

[0022] Working principle: First, fix the base 2 on the front cover of the drive motor with bolts, then put the sleeve 4 on the rotating shaft of the drive motor, and then put the friction disk 5 on the outer surface of the sleeve 4, so that the limit block on the outer surface of the sleeve 4 is engaged with the protrusion 11 in the upper area of ​​the rotating shaft channel, and then put the five groups of connecting rods 76 into the corresponding mounting holes on the surface of the armature 3, and insert the extended part into the interior of the shell 1 until it extends into the device shell 71 and contacts the threaded hole on the top of the gear 73. At this time, the shell 1 is put on the rotating shaft of the drive motor and fixedly connected to the base 2 with bolts. Then, rotate the rotating rod 9 to drive the ratchet 74 to rotate, and the ratchet 74 rotates the armature The ratchet 75 drives the rotating disk 72 to rotate. The rotation of the rotating disk 72 drives the peripheral gear 73 to rotate, so that the thread in the bottom area of ​​the connecting rod 76 engages with the thread opened inside the gear 73. The rotating rod 9 is further rotated to make the armature 3 overcome the elastic force of the third spring and be fixed to the housing 1. Finally, the rotating rod 9 is slowly rotated to drive the rotating disk 72 to rotate. The rotation of the rotating disk 72 can simultaneously drive the five groups of gears 73 to rotate. At this time, the five groups of connecting rods 76 simultaneously drive the armature 3 to move, evenly adjusting the gap between the armature 3 and the electromagnetic coil 6, ensuring that the gap between the armature 3 and the electromagnetic coil 6 in all directions is the same, reducing the number of adjustments in different directions; When the brake pad 81 is worn out after long-term use, the speed detector detects the braking time of the rotating shaft during braking. If the braking time is too long, the speed detector control circuit energizes the electromagnet 85, providing a reverse repulsive force to drive the brake pad 81 to move upward. The upward movement of the brake pad 81 causes the inclined surfaces at both ends of the limit rod 82 to contact the movement of both sides of the movable plate 83. When the brake pad 81 moves to the appropriate position under the action of the repulsive force of the electromagnet 85, the inclined surfaces at both ends of the limit rod 82 will be stuck between the limit teeth 84 on the movable plate 83 and mesh with them, thereby fixing the compensated brake pad 81 to prevent the strong pressure from The brake pad 81 pushes back, causing the brake to fail. When the brake pad 81 needs to be replaced, it is only necessary to remove the shell 1 and the armature 3 from the base 2, and then press the pressing rods on both sides of the bottom of the device shell 71 at the same time to drive the interference rod 771 to move into the device shell 71. The top inclined surface of the interference rod 771 interferes with the interference block 772, causing the pawl 75 to rotate, and its interference surface disengages from the tooth surface of the ratchet 74. At this time, the rotating disk 72 reverses under the action of the torsion spring at its top, and the reverse rotation of the rotating disk 72 drives the gear 73 to rotate in the opposite direction, so that the bottom of the connecting rod 76 disengages from the inside of the gear 73. Finally, remove the armature 3 and replace the brake pad 81 on its surface.

[0023] Any content not described in detail in this specification is prior art known to those skilled in the art. In the description of the present invention, unless otherwise specified, "plurality" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings and are intended solely for ease of description and simplification. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation and are therefore not to be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise specified or limited, the terms "connected" and "connected" are to be understood broadly, meaning, for example, fixedly connected, detachably connected, or integrally connected; mechanically connected, electrically connected; directly connected, or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention on a case-by-case basis.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-stability electromagnetic brake that is easy to disassemble and assemble, comprising a housing (1), characterized in that: A base (2) is mounted on the top of the housing (1) via a connecting shaft, a rotating shaft channel is provided through the middle of the base (2) and the top of the housing (1), an armature (3) is sleeved on the surface of the rotating shaft channel between the base (2) and the housing (1), a friction disc (5) is sleeved on the armature (3) via a shaft sleeve (4), an electromagnetic coil (6) is provided inside the housing (1), a mounting mechanism is provided at the bottom of the housing (1), and a compensation component is provided on the top of the armature (3); The mounting mechanism comprises a device shell (71) fixedly connected to the bottom of the housing (1); a rotating disk (72) is rotatably connected to the outer surface of the rotating shaft channel in the internal cavity of the device shell (71); a gear (73) is provided on the outer periphery of the rotating disk (72) in the internal cavity of the device shell (71); the top of the gear (73) is rotatably connected to the top of the internal cavity of the device shell (71); a ratchet (74) is fixedly connected in the groove at the bottom of the rotating disk (72); a pawl (75) is provided at the bottom of the internal cavity of the device shell (71) corresponding to the position of the ratchet (74); the pawl (75) is rotatably connected to the bottom of the internal cavity of the device shell (71) via a torsion spring; a connecting rod (76) is provided inside the armature (3) to limit the position; the bottom of the connecting rod (76) extends into the internal cavity of the device shell (71) and is threadedly connected to the internal portion of the gear (73); and an unlocking component is provided at the bottom of the housing (1).

2. The high-stability electromagnetic brake that is easy to disassemble and assemble according to claim 1, characterized in that: The unlocking assembly includes a resisting rod (771), which is slidably mounted inside the device shell (71), the top of the resisting rod (771) extends into the groove at the bottom of the rotating disk (72), the bottom of the resisting rod (771) extends out of the bottom of the device shell (71), and is provided with a pressing rod, both sides of the resisting rod (771) are limitedly slid in the cavity below the rotating disk (72) inside the device shell (71), the top of the cavity below the rotating disk (72) is fixedly connected to a first spring, the bottom of the first spring is fixedly connected to both sides of the resisting rod (771), and the other side of the pawl (75) is fixedly connected to a resisting block (772) corresponding to the top position of the resisting rod (771).

3. The high-stability electromagnetic brake that is easy to disassemble and assemble according to claim 2, characterized in that: The compensation component includes a brake pad (81), which is fitted and slidably installed in a top groove of the armature (3) near one end of the rotating shaft channel, and the bottom ends of the top groove of the armature (3) are fixedly connected to the limiting rod (82) and extend into the brake pad (81). A movable plate (83) is fitted and slidably installed in the cavity on both sides of the limiting rod (82) inside the brake pad (81), and a second spring is fixedly connected to the side of the movable plate (83) away from the limiting rod (82). The other end of the second spring is connected to the inner wall of the cavity on both sides of the limiting rod (82). The surface of the movable plate (83) near the limiting rod (82) is fixedly connected to the limiting tooth (84), and the bottom of the top groove of the armature (3) is located between the limiting rods (82) and an electromagnet (85) is provided.

4. The high-stability electromagnetic brake that is easy to disassemble and assemble according to claim 3, characterized in that: A plurality of accommodating grooves are evenly arranged in the circumferential direction on the top of the housing (1), a third spring is fixedly connected to the bottom of the accommodating groove, and the top of the third spring contacts the bottom of the armature (3).

5. The electromagnetic brake with high stability and easy disassembly and assembly according to claim 4, characterized in that: The top of one end of the rotating disk (72) close to the rotating shaft channel is connected to the inner wall of the internal cavity of the device shell (71) through a torsion spring. The bottom of the ratchet (74) is fixedly connected to a rotating rod (9). The rotating rod (9) extends out of the interior of the device shell (71). The bottom of the device shell (71) is provided with an arc-shaped sliding groove (10) corresponding to the rotating rod (9).

6. The electromagnetic brake with high stability and easy disassembly and assembly according to claim 5, characterized in that: The outer surface of the rotating disk (72) is evenly provided with a plurality of teeth in the circumferential direction. Five groups of gears (73) are evenly provided on the outer periphery of the rotating disk (72). The five groups of gears (73) are meshed with the teeth.

7. The high-stability electromagnetic brake that is easy to disassemble and assemble according to claim 6, characterized in that: A rotation speed detector is installed on the inner wall of the rotating shaft channel, a limit block is provided on the surface of the shaft sleeve (4), and a protrusion (11) is provided on the inner wall of the upper area of ​​the rotating shaft channel corresponding to the limit block on the surface of the shaft sleeve (4).

8. The high-stability electromagnetic brake that is easy to disassemble and assemble according to claim 7, characterized in that: The top contact surface of the contact rod (771) is configured as an inclined structure, the contact surfaces on both sides of the limiting rod (82) are configured as inclined structures, and the tooth direction of the limiting tooth (84) is opposite to the inclined direction of the contact surfaces on both sides of the limiting rod (82).

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