A brake with air support

Abstract

The present invention provides a brake with air support, belonging to the technical field of brakes; it includes a pressure plate, a first moving disk, a static disk, a second moving disk and a pressure-bearing disk. During braking, the pressure plate is in close contact with the first moving disk, the static disk, the second moving disk and the pressure-bearing disk under the pushing action of a braking mechanism. Friction plates are fixedly connected to the sides of the pressure plate, the first moving disk, the static disk, the second moving disk and the pressure-bearing disk that are close to each other. By arranging inclined pneumatic support holes on the first moving disk and the second moving disk, when the inner hub rotates at a high speed, the first moving disk and the second moving disk rotate together with it, thus generating a centrifugal effect, generating a flow inside the pneumatic support holes, and generating a pressure difference on both sides of the inclined pneumatic support holes. This pressure difference can prevent the brake disks from coming into contact when braking is not carried out, keep the braking clearance in dynamic balance, thereby reducing the drag torque and no-load loss power, reducing losses and wear.

Description

Technical Field

[0001] The present invention relates to the technical field of brakes, and particularly to a brake with air support. Background Art

[0002] The braking device is a core component to ensure the normal operation and system safety of complex mechanical systems. As a key component of the braking system, brakes have been widely used in important transportation tools such as aviation, automobiles, high-speed trains, as well as various industrial and military equipment. Dry disc brakes are widely used in civil aviation aircraft and heavy military vehicles.

[0003] In the existing multi-disc brakes during normal driving, there is no mechanical structure for axial positioning and support of the friction plates. Therefore, the gap between each moving friction plate and the static friction plate is uncontrollable, or the axial force is unbalanced, which may cause the friction plates to come into contact when not braking. This will increase the drag torque and idle loss power, resulting in increased mechanical losses and accelerated wear of the friction plates, ultimately shortening the service life of the brake. The main reason for this problem is the asymmetry of the axial aerodynamic force and imbalance brought about by the asymmetry of the brake structure. This unbalanced aerodynamic force will cause the friction plates to shift to one side, resulting in contact under non-braking conditions. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a brake with air support to solve the problem that in the existing multi-disc brakes during normal driving, the gap between the moving friction plate and the static friction plate is uncontrollable, or the axial force is unbalanced, which will increase the drag torque and idle loss power, resulting in increased mechanical losses and accelerated wear of the friction plates, ultimately shortening the service life of the brake.

[0005] To solve the above technical problem, the present invention provides the following technical solutions:

[0006] A brake with air support includes a pressure plate, a first moving plate, a static plate, a second moving plate, and a bearing plate. During braking, the pressure plate is in close contact with the first moving plate, the static plate, the second moving plate, and the bearing plate under the pushing action of the braking mechanism. Friction plates are fixedly connected to the sides of the pressure plate, the first moving plate, the static plate, the second moving plate, and the bearing plate that are close to each other.

[0007] A plurality of pneumatic support holes are provided on both the first moving plate and the second moving plate. The pneumatic support holes obliquely penetrate through the left and right sides of the first moving plate and the second moving plate. A plurality of guide vanes are fixedly connected to the inner walls of the centers of the first moving plate and the second moving plate.

[0008] Preferably, the pneumatic support holes are circular holes and penetrate through the friction plates. The ends of the pneumatic support holes far from the static plate are close to the outer sides of the first moving plate and the second moving plate.

[0009] Preferably, the number of the friction plates is multiple and they are evenly distributed in a circumferential direction on the pressure plate, the first moving plate, the stationary plate, the second moving plate and the pressure-bearing plate.

[0010] Preferably, a plurality of flow guiding vanes are fixedly connected to the inner walls of the centers of the first moving plate and the second moving plate.

[0011] Preferably, the included angle between the axis of the pneumatic support hole and the plane of the first moving plate and the second moving plate is 15 - 35 degrees.

[0012] Preferably, the pneumatic support hole includes a first through hole and a second through hole. The first through hole is opened on the friction plate, the second through hole is opened on the first moving plate or the second moving plate, and the diameter of the first through hole is larger than that of the second through hole.

[0013] Preferably, a plurality of convex platforms are fixedly connected to both the left and right sides of the first moving plate and the second moving plate. The convex platforms are located inside the first through hole, the second through hole penetrates the convex platforms, and a gap is left between the outer surface of the friction plate and the convex platforms.

[0014] Preferably, the convex platforms are perpendicular to the first moving plate and the second moving plate, and the convex platforms are integrally forged and formed with the first moving plate or the second moving plate.

[0015] Preferably, the first through hole includes a positioning hole and a communication hole, and the convex platform is located inside the positioning hole.

[0016] Preferably, the communication hole is inclined and coaxially arranged with the second through hole.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, by opening inclined pneumatic support holes on the first moving plate and the second moving plate, when the inner hub rotates at a high speed, the first moving plate and the second moving plate rotate with it, thus generating a centrifugal effect, generating a flow inside the pneumatic support holes, and generating a pressure difference on both sides of the inclined pneumatic support holes. This pressure difference can prevent the brake discs from contacting each other when braking is not performed, keep the braking gap in dynamic balance, thereby reducing the drag torque and no-load power loss, reducing losses and wear. At the same time, the pneumatic support holes can dissipate the heat generated by braking in time, prevent the temperature of the friction plates from being too high, ensure subsequent effective braking, and when the gap between the brake discs changes, the pressure difference generated by this pneumatic centrifugal effect will also change accordingly, and this change can restore the position of the brake discs to the equilibrium position, thus realizing adaptive control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the air-supported brake;

[0021] Figure 2 Schematic diagram of the structure of the pressure plate of the air-supported brake;

[0022] Figure 3 Schematic diagram of the structure of the static plate of the air-supported brake;

[0023] Figure 4 Schematic diagram of the structure of the pressure-bearing plate of the air-supported brake;

[0024] Figure 5 Schematic diagram of the structure of the moving plate of the air-supported brake;

[0025] Figure 6 Schematic diagram of the sectional structure of the moving plate of the air-supported brake;

[0026] Figure 7 Schematic diagram of the sectional structure of the pneumatic support hole of the air-supported brake;

[0027] Figure 8 Schematic diagram of the enlarged structure of the pneumatic support hole of the air-supported brake;

[0028] Figure 9 Schematic diagram of the installation sectional structure of the friction plate of the air-supported brake.

[0029] [Reference numerals]

[0030] 1. Pressure plate; 2. First moving plate; 3. Static plate; 4. Second moving plate; 5. Pressure-bearing plate; 6. Flow guide vane; 7. Pneumatic support hole; 8. Friction plate; 9. Boss; 701. First through hole; 702. Second through hole; 7011. Positioning hole; 7012. Communication hole.

[0031] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. Detailed implementation manners

[0032] The following will describe in detail a brake with air support provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0033] It should be noted that in the specification, references to "one embodiment", "an embodiment", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0034] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0035] It can be understood that the meanings of "on...", "above...", and "over..." in the present disclosure should be construed in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0036] In addition, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the accompanying drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0037] Embodiment 1

[0038] As Figures 1-6As shown in the figure, an embodiment of the present invention provides a brake with air support, which includes a pressure plate 1, a first moving plate 2, a stationary plate 3, a second moving plate 4, and a pressure-bearing plate 5. The first moving plate 2 and the second moving plate 4 have the same size and structure. The pressure plate 1, the stationary plate 3, and the pressure-bearing plate 5 do not rotate. Among them, the pressure plate 1 has high strength. Its main function is to receive an axial force during braking. For example, when the piston applies pressure, the pressure plate 1, the first moving plate 2, the stationary plate 3, the second moving plate 4, and the pressure-bearing plate 5 are in close contact, and braking is performed through friction force.

[0039] Specifically, the first moving plate 2 and the second moving plate 4 are driven by a transmission shaft to rotate, thereby driving the vehicle to travel. When braking, the frictional resistance generated by the friction plates 8 on both sides thereof hinders its rotation, thereby performing braking.

[0040] The pressure plate 1 is used to make the pressure plate 1, the first moving plate 2, the stationary plate 3, the second moving plate 4, and the pressure-bearing plate 5 in close contact by extrusion during braking. Friction plates 8 are fixedly connected to the sides of the pressure plate 1, the first moving plate 2, the stationary plate 3, the second moving plate 4, and the pressure-bearing plate 5 that are close to each other. The number of friction plates 8 is multiple and they are evenly distributed in a circumferential direction on the pressure plate 1, the first moving plate 2, the stationary plate 3, the second moving plate 4, and the pressure-bearing plate 5.

[0041] Among them, Figure 2 is a structural schematic diagram of the pressure plate 1, with friction plates 8 attached to the inner side. The friction plates 8 are the main friction parts. The friction plates 8 are connected by bolts or special connecting parts, which is convenient for replacement; the stationary plate 3 is the main friction component, with friction plates 8 on both sides, and its structure is as Figure 3 shown; the main function of the pressure-bearing plate 5 is to fix the entire brake, and friction plates 8 are also attached to its inner side, and its structure is as Figure 4 shown;

[0042] Friction plates 8 are attached to the inner sides of the pressure plate 1 and the pressure-bearing plate 5. The inner friction plates 8 can effectively prevent the reduction of the part life due to friction.

[0043] A plurality of pneumatic support holes 7 are provided on both the first moving plate 2 and the second moving plate 4, as Figure 5 and 6As shown in the figure, g1, g2, g3, and g4 are braking clearances, d1 and d2 are the diameters of the pneumatic support holes 7, α1 and α2 are the inclination angles of the pneumatic support holes 7. The pneumatic support holes 7 penetrate through the first moving disk 2 and the second moving disk 4, and are in air flow communication with g1, g2, g3, and g4. The pneumatic support holes 7 not only improve the heat dissipation effect but also generate pneumatic support. The included angle between the axis of the pneumatic support holes 7 and the planes of the first moving disk 2 and the second moving disk 4 is 15 - 35 degrees. The pneumatic support holes 7 obliquely penetrate through the left and right sides of the first moving disk 2 and the second moving disk 4. The pneumatic support holes 7 are round holes and penetrate through the friction plates 8. The end of the pneumatic support holes 7 far from the static disk 3 is close to the outer sides of the first moving disk 2 and the second moving disk 4. A plurality of guide vanes 6 are fixedly connected to the central inner walls of the first moving disk 2 and the second moving disk 4. The guide vanes 6 are located on the first moving disk 2 and the second moving disk 4, and their main function is to enable the air flow to circulate rapidly inside the inner hub, and to be coupled with the pneumatic support holes 7 to achieve a better pneumatic support effect.

[0044] Working principle:

[0045] When braking, the pressure plate 1 is subjected to a braking force and moves axially. Since the braking force is much greater than the axial aerodynamic force and the pneumatic support force, the first moving disk 2, the static disk 3, the second moving disk 4, and the pressure-bearing disk 5 are mutually extruded and frictionally braked due to the axial force of the pressure plate 1, and the friction plates 8 generate resistance by friction to achieve the braking effect. When the braking is released, the pressure plate 1, the first moving disk 2, the static disk 3, the second moving disk 4, and the pressure-bearing disk 5 return to their original positions, and gaps are formed between the friction plates 8. Under the normal high-speed rotation of the inner hub, the first moving disk 2 and the second moving disk 4 rotate with it, thus generating a centrifugal effect. The air flow flows inside the pneumatic support holes 7, and a pressure difference is generated on both sides of the inclined pneumatic support holes 7. This pressure difference can prevent the brake disks from contacting each other when braking is not performed, and keep the braking clearances in dynamic balance. Due to the pneumatic support force generated by the pneumatic support holes 7, the braking clearances g1, g2, g3, and g4 are always greater than 0, avoiding the generation of drag torque and idle loss power caused by the axial aerodynamic force causing the disks to contact each other, thereby reducing the drag torque and idle loss power, reducing losses, and reducing wear;

[0046] At the same time, after braking and releasing the brake plate, under the action of the guide vanes 6, the air flow passes through the guide grooves and then forms pneumatic support under the action of the pneumatic support holes 7, achieving the functions of quickly separating the brake disks and maintaining the braking clearances, and at the same time, it can also quickly take away the heat generated by friction.

[0047] Embodiment 2

[0048] The difference from Embodiment 1 is that, as Figures 6-8As shown, the pneumatic support hole 7 includes a first through hole 701 and a second through hole 702. The first through hole 701 is opened on the friction plate 8, and the second through hole 702 is opened on the first moving disk 2 or the second moving disk 4. The diameter of the first through hole 701 is greater than that of the second through hole 702.

[0049] The expansion coefficients of the first moving disk 2 or the second moving disk 4 and the friction plate 8 are different, which can prevent the friction plate 8 and the moving disk from expanding due to temperature rise, avoid the second through hole 702 of the moving disk from increasing to generate a step that hinders the air flow, and better enable the air flow to pass through for pneumatic support.

[0050] As Figure 7 and Figure 8 shown, in this embodiment, a plurality of convex platforms 9 are fixedly connected to both the left and right sides of the first moving disk 2 and the second moving disk 4. The convex platforms 9 are located inside the first through hole 701. The second through hole 702 penetrates the convex platforms 9. A gap is left between the outer surface of the friction plate 8 and the convex platforms 9. The convex platforms 9 are perpendicular to the first moving disk 2 and the second moving disk 4, and the convex platforms 9 are integrally forged with the first moving disk 2 or the second moving disk 4.

[0051] As Figure 8 and Figure 9 shown, in this embodiment, the first through hole 701 includes a positioning hole 7011 and a communication hole 7012. The convex platform 9 is located inside the positioning hole 7011. The communication hole 7012 is inclined and coaxially arranged with the second through hole 702. This setting makes the positioning and installation of the friction plate 8 more convenient, and at the same time does not affect the support effect of the pneumatic support hole 7.

[0052] Term Explanation:

[0053] Brake clearance: In this article, it refers to the clearance between the friction plates of each disk in the brake.

[0054] Axial aerodynamic force: In this article, it refers to the aerodynamic force generated due to the brake clearance when the inner hub rotates. The axial aerodynamic force is the main reason for generating the drag torque and the no-load loss power.

[0055] Drag torque: In this article, it refers to the torque generated by the contact of the pressure plate, the moving disk, the static disk, and the bearing disk, that is, the torque generated by the contact of each disk without braking.

[0056] No-load loss power: In this article, it refers to the ineffective work generated due to the drag torque when no braking is performed.

[0057] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. To enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion about the essence of the present invention.

[0058] Those of ordinary skill in the art can understand that all or part of the steps in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a program, and this program can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disks, optical discs, etc.

[0059] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A brake with air support, characterized in that: The invention comprises a pressure plate (1), a first moving plate (2), a static plate (3), a second moving plate (4) and a pressure plate (5); during braking, the pressure plate (1) is pushed by a braking mechanism to be in close contact with the first moving plate (2), the static plate (3), the second moving plate (4) and the pressure plate (5); and friction plates (8) are fixedly connected to the sides of the pressure plate (1), the first moving plate (2), the static plate (3), the second moving plate (4) and the pressure plate (5) that are close to each other. A plurality of pneumatic support holes (7) are provided on the first moving disk (2) and the second moving disk (4), and the pneumatic support holes (7) obliquely penetrate the left and right sides of the first moving disk (2) and the second moving disk (4); The pneumatic support hole (7) comprises a first through hole (701) and a second through hole (702), the first through hole (701) being provided on the friction plate (8), the second through hole (702) being provided on the first moving plate (2) or the second moving plate (4), and the diameter of the first through hole (701) being greater than the diameter of the second through hole (702); A plurality of bosses (9) are fixedly connected to the left and right sides of the first moving plate (2) and the second moving plate (4); the bosses (9) are located inside the first through hole (701); the second through hole (702) passes through the bosses (9); and a gap is left between the outer surface of the friction plate (8) and the bosses (9); The boss (9) is arranged perpendicularly to the first moving disk (2) and the second moving disk (4); the boss (9) and the first moving disk (2) or the second moving disk (4) are integrally forged; The first through hole (701) comprises a positioning hole (7011) and a communicating hole (7012), and the boss (9) is located inside the positioning hole (7011); The communicating hole (7012) is arranged obliquely and coaxially with the second through hole (702).

2. The air-supported brake according to claim 1, characterized in that: The pneumatic support hole (7) is a circular hole and penetrates the friction plate (8); an end of the pneumatic support hole (7) away from the stationary plate (3) is close to the outer sides of the first moving plate (2) and the second moving plate (4).

3. The air-supported brake according to claim 2, characterized in that: The friction plates (8) are multiple in number and are evenly distributed circumferentially on the pressure plate (1), the first moving plate (2), the stationary plate (3), the second moving plate (4) and the pressure plate (5).

4. The air-supported brake according to claim 3, characterized in that: A plurality of guide vanes (6) are fixedly connected to the central inner walls of the first moving disk (2) and the second moving disk (4).

5. The air-supported brake according to claim 4, characterized in that: The angle between the axis of the pneumatic support hole (7) and the planes of the first moving plate (2) and the second moving plate (4) is 15-35 degrees.

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