CN219570683U

CN219570683U - High-stability brake

Info

Publication number: CN219570683U
Application number: CN202320561848.6U
Authority: CN
Inventors: 张恒硕; 廖世全; 张�杰
Original assignee: Chengdu Xindeli Technology Co ltd
Current assignee: Chengdu Xindeli Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-08-22
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses a high-stability brake, which comprises a friction plate, an armature and a stator, wherein a spline and a spline sleeve are connected in the brake, connecting holes for threaded connection are formed in the end faces of the friction plate and the stator, a rotating shaft required to be braked is connected through the spline, the spline sleeve is positioned between the armature and the friction plate, tooth-shaped grooves are formed in the face, facing the spline sleeve, of the armature, and plastic rubber pads are fixedly connected to the face, facing the armature, of the spline sleeve; be equipped with spacing hole on the terminal surface of armature, spacing hole cooperates with the connecting hole that is located the stator, the inside of connecting hole is provided with the locking subassembly of screw, the locking subassembly of screw includes the spring, the one end of spring is in along the direction of seting up of connecting hole fixed connection the bottom surface of connecting hole. The brake provided by the utility model can improve the stability and reliability of the brake through the tooth-shaped friction structure and the screw anti-loosening arrangement.

Description

High-stability brake

Technical Field

The utility model relates to the technical field of brakes, in particular to a high-stability brake.

Background

In the existing friction brake, the rotor is propped against by electromagnetic force generated by on-off of an electromagnet, braking of the rotor is realized by friction force, and in the specific implementation process, the rotor is clamped by an armature and a friction plate, so that the inertia of the rotor is overcome, and the rotor is braked and stopped.

The brake adopting the spline connection mode is used as a brake with extremely wide application range, and the spline has more key teeth and large tooth thickness, and can bear a larger range of torque and force transmission, so the reliability of the brake is more remarkable. However, vibration is generated during braking of the brake, and in a long-term braking process, periodic vibration has a larger influence on the stability of a screw connection structure, and particularly, the stress amplitude of the screw at the joint of the stator and the friction plate is larger and is more easy to loosen, so that the stability of the brake is influenced.

In addition, friction and abrasion generated by braking of the armature and the spline housing in the brake are increased along with the extension of a braking period, and meanwhile, larger metal friction noise is generated between the spline housing and the armature in the braking. In some brakes, noise and friction wear can be reduced by arranging a gasket between the armature and the spline housing, but the method also has the new technical problem that when the brake brakes, the spline housing rapidly generates a large amount of heat relative to the high-speed friction rotation of the armature, and the heat cannot be released in time, so that the surfaces of the armature and the spline housing are corroded, and meanwhile, the gasket is damaged. Thus, this approach is also inadequate.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a high-stability brake.

The aim of the utility model is realized by the following technical scheme:

the high-stability brake comprises a friction plate, an armature and a stator, wherein a spline and a spline housing are connected in the brake, connecting holes for threaded connection are formed in the end faces of the friction plate and the stator, a rotating shaft which is required to be braked is connected outside through the spline, the end face of the spline housing is positioned between the armature and the friction plate, tooth-shaped grooves are formed in the face, facing the spline housing, of the armature, and plastic rubber pads are fixedly connected to the face, facing the armature, of the spline housing; be equipped with spacing hole on the terminal surface of armature, spacing hole cooperates with the connecting hole that is located the stator, the inside of connecting hole is provided with the locking subassembly of screw, the locking subassembly of screw includes the spring, the one end of spring is in along the direction of seting up of connecting hole fixed connection the bottom surface of connecting hole.

In this scheme, through set up tooth form friction structure (armature is equipped with the tooth groove, and the spline housing sets up the plastic cushion) between armature and spline housing, avoided the direct contact of armature and spline housing, reduced wearing and tearing. The arrangement of the plastic rubber pad also eliminates part of noise between the spline housing and the armature during braking. Simultaneously, when the tooth-shaped groove on the armature is in braking contact with the plastic rubber pad, heat generated by friction can be immediately emitted out through the gap of the tooth-shaped groove, so that the thermal damage to the plastic rubber pad and the spline housing is avoided. Meanwhile, a locking component is arranged for the connecting screw between the friction plate and the stator, so that the screw is prevented from loosening due to periodic stress amplitude generated by vibration of the brake, and the structure of the hard brake is stable. In addition, the armature is fixed in the circumferential direction through the limiting hole and the screw, and the generated friction moment is born by the limiting hole and the connected screw, so that the armature is prevented from moving in the circumferential direction in the braking process, and the torque spring is replaced.

Further, the tooth grooves are radially distributed along the armature surface in the center. The tooth-shaped grooves distributed in this way have better heat dissipation effect.

Further, a top block is arranged in the screw anti-loosening assembly, the external dimension of the top block is matched with the connecting hole, and one end face of the top block is fixedly connected with the spring. The spring can be prevented from being blocked between the threads of the screw by utilizing the contact of the ejector block and the screw, and the ejector block can uniformly transmit the elasticity of the spring to the screw, so that the anti-loosening effect is better.

Further, a counter bore for installing an electromagnet assembly and a return spring is formed in one surface of the stator facing the armature, and two ends of the return spring are fixedly connected with the bottom of the counter bore and the armature respectively.

Further, a sleeve is arranged between the limiting hole and a screw for connecting the friction plate and the stator, the outer diameter of the sleeve is matched with the limiting hole, and the inner diameter of the sleeve is matched with the screw. When the brake is braked, under the action of electromagnetic force, the armature realizes the orientation and the sliding on the screw through the sleeve, the beneficial effects are that the contact area between the limit hole on the armature and the screw can be increased, the pressure born by unit area is reduced, the fatigue abrasion of the limit hole on the armature is effectively reduced, the main abrasion damage is transferred to the screw (because the screw is a standard component, the interchangeability is good, the replacement cost is lower than that of the armature, and the abrasion damage is transferred to the screw), the service life of the armature is prolonged, and meanwhile, the axial movement of the armature is smoother.

Further, the part of the spline, which is meshed with the spline housing, is coated with lubricating grease. The lubricating grease can protect the meshing surface, reduce the abrasion between teeth and has a certain noise reduction effect.

Further, through holes are formed in the edge of the end face of the stator, and the through holes are used for fixedly connecting the brake with an external mechanism.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the tooth-shaped friction structure is arranged between the armature and the spline housing (the armature is provided with the tooth-shaped groove, and the spline housing is provided with the plastic rubber pad), so that the direct contact between the armature and the spline housing is avoided, and the abrasion is reduced. The arrangement of the plastic rubber pad also eliminates part of noise between the spline housing and the armature during braking. Simultaneously, when the tooth-shaped groove on the armature is in braking contact with the plastic rubber pad, heat generated by friction can be immediately emitted out through the gap of the tooth-shaped groove, so that the thermal damage to the plastic rubber pad and the spline housing is avoided.

2. In the utility model, a locking component is arranged for the connecting screw between the friction plate and the stator, so that the screw is prevented from loosening by periodic stress amplitude generated by vibration of the brake, and the structure of the hard brake is further stable.

3. A sleeve is arranged between the limiting hole and the screw, the sleeve is tightly matched with the limiting hole, and the sleeve is in sliding fit with the screw. Therefore, when the brake is braked, the armature realizes the orientation and the sliding on the screw through the sleeve under the action of electromagnetic force, the beneficial effects are that the contact area between the limit hole on the armature and the screw can be increased, the pressure born by the unit area is reduced, the fatigue abrasion of the limit hole on the armature is effectively reduced, the main abrasion damage is transferred to the screw (because the screw is a standard component, the interchangeability is good, the replacement cost is lower than that of the armature, and the abrasion damage is transferred to the screw), the service life of the armature is prolonged, and meanwhile, the axial movement of the armature is smoother.

4. According to the utility model, the armature is circumferentially fixed through the limiting hole and the screw, and the generated friction moment is born by the limiting hole and the connected screw, so that the armature is prevented from moving circumferentially in the braking process, the use of a torque spring is replaced, the structural parts and the arrangement space of the brake are simplified, the brake is compact in structure, and the cost is lower.

Drawings

FIG. 1 is a brake assembly view;

FIG. 2 is a schematic illustration of the internal structure of the brake;

FIG. 3 is a cross-sectional view of the brake;

fig. 4 is a schematic illustration of an armature configuration.

In the figure, a 1-stator, a 2-armature, a 201-tooth-shaped groove, a 3-spline, a 4-spline housing, a 5-friction plate, a 6-screw, a 7-sleeve, an 8-limit hole, a 9-through hole, a 10-connecting hole, an 11-spring, a 12-ejector block, a 13-electromagnet assembly, a 14-return spring and a 15-plastic rubber pad are arranged.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Referring to fig. 1, 2 and 3, the high stability brake provided by the present utility model mainly comprises parts including a friction plate 5, an armature 2 and a stator 1. In the brake, a spline 3 and a spline sleeve 4 are adopted to realize transmission of braking torque to an external rotating shaft, the spline 3 is connected with the rotating shaft which is required to be braked externally, and the end face of the spline sleeve 4 meshed with the spline 3 is positioned between the armature 2 and the friction plate 5. In the brake, the end faces of the friction plate 5 and the stator 1 are provided with connecting holes 10 for screw connection, that is, the friction plate 5 is fixedly connected with the stator 1 by screws 6. A counter bore is formed in one surface of the stator 1 facing the armature 2, the counter bore is used for mounting an electromagnet assembly 13 and a return spring 14, and two ends of the return spring 14 are fixedly connected to the bottom of the counter bore and the armature 2 respectively. The end face edge of the stator 1 is provided with a through hole 9, and the through hole 9 is used for fixedly connecting the brake with an external mechanism.

Referring to fig. 4, in the present utility model, a tooth-shaped groove 201 is disposed on a surface of the armature 2 facing the spline housing 4, and the tooth-shaped grooves 201 are uniformly distributed along an end surface of the armature 2 in a radial manner. And, the plastic rubber pad 15 is fixedly connected to one surface of the spline housing 4 facing the armature 2, and the plastic rubber pad 15 has the characteristics of wear resistance, high temperature resistance and good plasticity. In the braking process of a general brake, the rigid contact between the spline housing 4 and the armature 2 can generate loud noise, and serious abrasion is generated on the contact surface of the spline housing and the armature 2, so that the braking service life is shortened. In the utility model, the spline housing 4 is in indirect contact friction with the armature 2 through the plastic rubber pad 15, so that not only is the larger noise avoided, but also the friction and abrasion are reduced. Meanwhile, when the tooth-shaped groove 201 on the armature 2 is in braking contact with the plastic rubber pad 15, heat generated by friction can be immediately emitted out through the gap of the tooth-shaped groove 201, so that thermal damage to the plastic rubber pad 15 and the spline housing 4 is avoided.

Of course, other embodiments of this solution are possible. For example, in some embodiments, the tooth-shaped groove 201 may be selectively formed on the end surface of the spline housing 4, and the plastic rubber pad 15 may be disposed on the armature 2. However, in this solution, the difficulty of machining the tooth-shaped groove 201 on the end face of the spline housing 4 is greater than that of machining the tooth-shaped groove 201 on the armature 2, because the spline housing 4 has a boss on which the internal spline 3 is located, and there may be some interference with the machining of the tooth-shaped groove 201.

In addition, in the utility model, a limit hole 8 is arranged on the end face of the armature 2, and the position distribution and the size of the limit hole 8 are matched with a connecting hole 10 positioned on the stator 1 so that the screw 6 can be accurately connected. The armature 2 is fixed in the circumferential direction through the limiting hole 8 and the screw 6, and the generated friction moment is born by the limiting hole 8 and the connected screw 6, so that the armature 2 is prevented from moving in the circumferential direction in the braking process, and the torque spring 11 is replaced. Meanwhile, a screw 6 anti-loosening component is arranged in the connecting hole 10, wherein the screw 6 anti-loosening component comprises a spring 11, and one end of the spring 11 is fixedly connected to the bottom surface of the connecting hole 10 along the opening direction (hole axis direction) of the connecting hole 10. The anti-loosening assembly arranged for the screw 6 can tightly prop up the screw 6 in a pre-tightening state, so that the screw thread of the screw 6 is tightly contacted with the reaming screw thread on the connecting hole 10, thereby preventing the screw 6 from loosening due to the influence of external stress amplitude. Meanwhile, abrasion caused by collision and contact between the screw 6 and the hole wall due to loosening is avoided, so that the stability of the connecting structure of the brake is ensured.

Further, in the above anti-loosening assembly, in some embodiments, the screw 6 is provided with a top block 12, the top block 12 has an external dimension matching with the connection hole 10, and an end surface of the top block 12 is fixedly connected with the spring 11, so that the top block 12 can slide in the connection hole 10 through the spring 11. The ejector block 12 is in contact with the screw 6, so that the spring 11 can be prevented from being blocked between the threads of the screw 6, and meanwhile, the ejector block 12 can uniformly transmit the elastic force of the spring 11 to the screw 6, so that the anti-loosening effect is better.

In this embodiment, a sleeve 7 is disposed between the limiting hole 8 and the screw 6 for connecting the friction plate 5 and the stator 1, the outer diameter of the sleeve 7 is matched with the limiting hole 8, and the inner diameter of the sleeve 7 is matched with the screw 6. When the brake is braked, under the action of electromagnetic force, the armature 2 realizes the orientation and the sliding on the screw 6 through the sleeve, the beneficial effects are that the contact area between the limit hole 8 on the armature 2 and the screw 6 can be increased, the pressure born by a unit area is reduced, the fatigue abrasion of the limit hole 8 on the armature 2 is effectively reduced, the main abrasion damage is transferred to the screw 6 (because the screw 6 is a standard component, the interchangeability is good, the replacement cost is lower than that of the armature 2, and the abrasion damage is transferred to the screw 6), the service life of the armature 2 is prolonged, and meanwhile, the axial movement of the armature 2 is also smoother.

In this embodiment, grease is further applied to the spline 3 and spline teeth of the spline housing 4. The presence of the lubricating grease is beneficial to protecting the surfaces of the key teeth and reducing the abrasion between the key teeth, and meanwhile, the lubricating grease has a certain noise reduction effect.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. The utility model provides a high stability stopper, includes friction disc (5), armature (2) and stator (1), the stopper is connected with spline (3) and spline housing (4) in, has seted up connecting hole (10) that are used for threaded connection on the terminal surface of friction disc (5) and stator (1), connects the axis of rotation of outside required braking through spline (3), and spline housing (4) are located between armature (2) and friction disc (5), its characterized in that: the one side of the armature (2) facing the spline housing (4) is provided with tooth-shaped grooves (201), the tooth-shaped grooves (201) are uniformly distributed along the surface of the armature (2), and the one side of the spline housing (4) facing the armature (2) is fixedly connected with a plastic rubber pad (15); be equipped with spacing hole (8) on the terminal surface of armature (2), spacing hole (8) cooperate with connecting hole (10) that are located on stator (1), the inside of connecting hole (10) is provided with screw locking subassembly, screw locking subassembly includes spring (11), the one end of spring (11) is in along the seting up direction fixed connection of connecting hole (10) the bottom surface of connecting hole (10).

2. A high stability brake according to claim 1, wherein: the tooth-shaped grooves (201) are distributed radially in the center along the surface of the armature (2).

3. A high stability brake according to claim 1, wherein: the screw locking assembly is internally provided with a top block (12), the external dimension of the top block (12) is matched with the connecting hole (10), and one end face of the top block (12) is fixedly connected with the spring (11).

4. A high stability brake according to claim 1, wherein: the stator (1) is provided with a counter bore for installing an electromagnet assembly (13) and a return spring (14) on one surface facing the armature (2), and two ends of the return spring (14) are respectively connected with the bottom of the counter bore and the armature (2).

5. A high stability brake according to claim 1, wherein: a sleeve (7) is arranged between the limiting hole (8) and a screw (6) for connecting the friction plate (5) and the stator (1), the outer diameter of the sleeve (7) is matched with the limiting hole (8), and the inner diameter of the sleeve (7) is matched with the screw (6).

6. A high stability brake according to claim 1, wherein: the part of the spline (3) meshed with the spline teeth of the spline housing (4) is coated with lubricating grease.

7. A high stability brake according to claim 1, wherein: the end face edge of the stator (1) is provided with a through hole (9), and the through hole (9) is used for fixedly connecting the brake with an external mechanism.