Brake with air support

Abstract

The invention provides a brake with an air support, and belongs to the technical field of brakes. Comprising a pressurizing disc, a first movable disc, a static disc, a second movable disc and a pressure-bearing disc, during braking, the pressurizing disc is in close contact with the first movable disc, the static disc, the second movable disc and the pressure-bearing disc under the pushing action of a braking mechanism, and friction plates are fixedly connected to the sides, close to each other, of the pressurizing disc, the first movable disc, the static disc, the second movable disc and the pressure-bearing disc. The inclined pneumatic supporting holes are formed in the first movable disc and the second movable disc, when the brake rotates in the inner hub at a high speed, the first movable disc and the second movable disc rotate along with the brake, so that the centrifugal effect is generated, flowing is generated in the pneumatic supporting holes, and the pressure difference is generated on the two sides of the inclined pneumatic supporting holes; the pressure difference can prevent the brake discs from making contact under the condition that braking is not carried out, and the brake clearance is kept in dynamic balance, so that the running torque and the air loss power are reduced, the loss is reduced, and the abrasion is reduced.

Description

Technical Field

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

[0002] Braking devices are core components that ensure the normal operation and safety of complex mechanical systems. As key components of braking systems, brakes have been widely used in important vehicles such as aviation, automobiles, high-speed trains, and various industrial and military equipment. Dry disc brakes are widely used in civil aircraft and heavy military vehicles.

[0003] In the normal driving of the existing multi-disc brake, the friction plates have no mechanical structure for axial positioning and support, so the gap between each dynamic friction plate and the static friction plate is uncontrollable, or the axial force is unbalanced, which may cause the friction plates to contact when not braking, which will increase the belt torque and air loss power, leading to increased mechanical losses and accelerated wear of the friction plates, and ultimately shortening the service life of the brake. The main reason for this problem is the asymmetry and imbalance of the axial aerodynamic force caused by the asymmetry of the brake structure. The unbalanced aerodynamic force will cause the friction plate to deviate to one side, resulting in contact when not braking. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an air-supported brake to solve the problem that in the existing multi-disc brake, the gap between the dynamic friction plate and the static friction plate is uncontrollable, or the axial force is unbalanced under normal driving, which will increase the belt torque and air loss power, lead to increased mechanical losses and accelerated wear of the friction plate, and ultimately shorten the service life of the brake.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A brake with air support, comprising a pressure plate, a first moving plate, a static plate, a second moving plate and a pressure plate. During braking, the pressure plate is in close contact with the first moving plate, the static plate, the second moving plate and the pressure plate under the pushing action of a brake mechanism. The pressure plate, the first moving plate, the static plate, the second moving plate and the pressure plate are all fixedly connected with friction plates on the sides close to each other. The first moving disk and the second moving disk are both provided with a plurality of pneumatic support holes, which obliquely penetrate the left and right sides of the first moving disk and the second moving disk, and the central inner walls of the first moving disk and the second moving disk are both fixedly connected with a plurality of guide vanes.

[0006] Preferably, the pneumatic support hole is a circular hole and passes through the friction plate, and one end of the pneumatic support hole away from the static plate is close to the outer sides of the first movable plate and the second movable plate.

[0007] Preferably, the friction plates are multiple in number and are evenly distributed circumferentially on the pressure plate, the first moving plate, the stationary plate, the second moving plate and the pressure plate.

[0008] Preferably, a plurality of guide vanes are fixedly connected to the central inner walls of the first moving disk and the second moving disk.

[0009] Preferably, the angle between the axis of the pneumatic support hole and the planes of the first movable plate and the second movable plate is 15-35 degrees.

[0010] 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 movable plate or the second movable plate, and the diameter of the first through hole is greater than the diameter of the second through hole.

[0011] Preferably, a plurality of bosses are fixedly connected to the left and right sides of the first movable plate and the second movable plate, the bosses are located inside the first through holes, the second through holes penetrate the bosses, and a gap is left between the outer surface of the friction plate and the bosses.

[0012] Preferably, the boss is vertically arranged to the first movable plate and the second movable plate, and the boss is integrally forged with the first movable plate or the second movable plate.

[0013] Preferably, the first through hole includes a positioning hole and a communicating hole, and the boss is located inside the positioning hole.

[0014] Preferably, the communicating hole is arranged obliquely and coaxially with the second through hole.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by opening inclined pneumatic support holes on the first movable disc and the second movable disc, when the inner hub of the brake rotates at high speed, the first movable disc and the second movable disc rotate together with it, thereby generating a centrifugal effect, generating flow inside the pneumatic support hole, and causing a pressure difference on both sides of the inclined pneumatic support hole. The pressure difference can prevent the brake discs from contacting each other without braking, and keep the brake clearance in dynamic balance, thereby reducing the belt torque and no-load power, reducing losses and wear. At the same time, the pneumatic support holes can dissipate the heat generated by braking in time to prevent the friction plate from overheating and ensure subsequent effective braking. After the gap between the brake discs changes, the pressure difference caused by the pneumatic centrifugal effect will also change accordingly. This change can restore the position of the brake disc to a balanced position, thereby realizing adaptive control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the brake with air support; Figure 2 It is a schematic diagram of the structure of a pressure disc of a brake with air support; Figure 3 It is a structural schematic diagram of a static disc of a brake with air support; Figure 4 It is a structural schematic diagram of a pressure plate of a brake with air support; Figure 5 It is a structural schematic diagram of a moving disc of a brake with air support; Figure 6 The figure is a schematic cross-sectional structure diagram of a moving disc of a brake with air support; Figure 7 A schematic diagram of the cross-sectional structure of the pneumatic support hole of the brake with air support; Figure 8 It is a schematic diagram of the enlarged structure of the pneumatic support hole of the brake with air support; Fig. 9 This is a schematic diagram of the cross-sectional structure of the installation of the friction pad of the brake with air support.

[0018] [Reference Signs] 1. Pressure plate; 2. First moving plate; 3. Static plate; 4. Second moving plate; 5. Pressure plate; 6. Guide vane; 7. Pneumatic support hole; 8. Friction plate; 9. Boss; 701. First through hole; 702. Second through hole; 7011. Positioning hole; 7012. Connecting hole.

[0019] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0020] The following is a detailed description of a brake with air support provided by the present invention in conjunction with the accompanying drawings and specific embodiments. It is also noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0021] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0022] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0023] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0024] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0025] Embodiment 1 like Figure 1-6As shown, an embodiment of the present invention provides an air-supported brake, comprising a pressure plate 1, a first moving plate 2, a static plate 3, a second moving plate 4 and a pressure plate 5. The first moving plate 2 and the second moving plate 4 are of the same size and structure. The pressure plate 1, the static plate 3 and the pressure plate 5 do not rotate. The pressure plate 1 has a high strength and is mainly used for braking under axial force. For example, the piston is pressurized to make the pressure plate 1, the first moving plate 2, the static plate 3, the second moving plate 4 and the pressure plate 5 in close contact, and brake is performed by friction. Specifically, the first moving plate 2 and the second moving plate 4 are driven by the transmission shaft to rotate and drive the vehicle to travel. When braking, the friction resistance generated by the friction plates 8 on both sides thereof hinders their rotation, thereby braking; The pressure plate 1 is used to make the pressure plate 1, the first moving plate 2, the static plate 3, the second moving plate 4 and the pressure plate 5 closely contact by squeezing during braking. 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 are fixedly connected with friction plates 8. The number of friction plates 8 is multiple and evenly distributed on the pressure plate 1, the first moving plate 2, the static plate 3, the second moving plate 4 and the pressure plate 5. in, Figure 2 The structure diagram of the pressure plate 1 is shown in FIG. 1 , and a friction plate 8 is attached to the inner side. The friction plate 8 is the main friction part. The friction plate 8 is connected by bolts or special connectors for easy replacement. The static plate 3 is the main friction component. There are friction plates 8 on both sides. The structure is shown in FIG. Figure 3 As shown; the main function of the pressure plate 5 is to fix the entire brake, and the inner side thereof is also attached with a friction plate 8, and its structure is as shown Figure 4 As shown; The inner side of the pressure plate 1 and the pressure plate 5 is provided with a friction plate 8, and the inner friction plate 8 can effectively prevent the parts from being shortened due to friction; A plurality of pneumatic support holes 7 are provided on the first moving plate 2 and the second moving plate 4. Figure 5 and 6As shown, g1, g2, g3, and g4 are brake clearances, d1 and d2 are diameters of the pneumatic support hole 7, and α1 and α2 are inclination angles of the pneumatic support hole 7. The pneumatic support hole 7 passes through the first moving disc 2 and the second moving disc 4, and is in airflow communication with g1, g2, g3, and g4. The pneumatic support hole 7 not only improves the heat dissipation effect, but also generates pneumatic support. The angle between the axis of the pneumatic support hole 7 and the planes of the first moving disc 2 and the second moving disc 4 is 15-35 degrees. The pneumatic support hole 7 obliquely passes through the left and right sides of the first moving disc 2 and the second moving disc 4. The pneumatic support hole 7 is a circular hole and passes through the friction plate 8. The end of the pneumatic support hole 7 away from the static disc 3 is close to the outer side of the first moving disc 2 and the second moving disc 4. The central inner walls of the first moving disc 2 and the second moving disc 4 are fixedly connected with a plurality of guide vanes 6. The guide vanes 6 are located on the first moving disc 2 and the second moving disc 4. Their main function is to make the air flow quickly circulate in the inner hub and couple with the pneumatic support hole 7 to achieve better pneumatic support effect.

[0026] Working principle: When braking, the pressure plate 1 is subjected to the braking force and moves axially. Since the braking force is much larger than the axial aerodynamic force and the pneumatic support force, the first moving plate 2, the static plate 3, the second moving plate 4 and the pressure plate 5 are squeezed and braked against each other by the axial force of the pressure plate 1, and the friction of the friction plate 8 generates resistance, thereby achieving the braking effect. When the brake is released, the pressure plate 1, the first moving plate 2, the static plate 3, the second moving plate 4 and the pressure plate 5 are reset, and gaps are formed between the friction plates 8. Under the normal high-speed operation of the inner hub, the first moving plate 2 and the second moving plate 4 rotate with it, thereby generating a centrifugal effect, and the airflow flows inside the pneumatic support hole 7, and a pressure difference is generated on both sides of the inclined pneumatic support hole 7. The pressure difference can prevent the brake discs from contacting each other when no braking is performed, and keep the brake gap in dynamic balance. Due to the pneumatic support force generated by the pneumatic support hole 7, the brake gaps g1, g2, g3, and g4 are It is always greater than 0, avoiding the contact between the disks due to axial aerodynamic force, resulting in belt torque and empty power loss, thereby reducing belt torque and empty power loss, reducing losses and wear; At the same time, after braking, the brake plate is released, and the airflow passes through the guide groove under the action of the guide blade 6, and then forms pneumatic support under the action of the pneumatic support hole 7, so as to achieve the effect of quickly separating the brake disc and maintaining the brake gap, and at the same time, it can also quickly take away the heat generated by friction.

[0027] Embodiment 2 The difference from the first embodiment is that, Figure 6-8 As shown, the pneumatic support hole 7 includes a first through hole 701 and a second through hole 702, the first through hole 701 is provided on the friction plate 8, the second through hole 702 is provided on the first movable plate 2 or the second movable plate 4, and the diameter of the first through hole 701 is greater than the diameter of the second through hole 702; The expansion coefficient of the first moving plate 2 or the second moving plate 4 is different from that of the friction plate 8, so as to avoid the expansion of the friction plate 8 and the moving plate due to the increase in temperature, so that the second through hole 702 of the moving plate is enlarged to produce a step that hinders the airflow, so as to better allow the airflow to pass through and perform pneumatic support.

[0028] like Figure 7 and Figure 8 As shown, in this embodiment, a plurality of bosses 9 are fixedly connected to the left and right sides of the first movable plate 2 and the second movable plate 4, the boss 9 is located inside the first through hole 701, the second through hole 702 passes through the boss 9, a gap is left between the outer surface of the friction plate 8 and the boss 9, the boss 9 is vertically arranged to the first movable plate 2 and the second movable plate 4, and the boss 9 is integrally forged with the first movable plate 2 or the second movable plate 4.

[0029] like Figure 8 and Fig. 9 As shown, in this embodiment, the first through hole 701 includes a positioning hole 7011 and a connecting hole 7012, the boss 9 is located inside the positioning hole 7011, and the connecting hole 7012 is inclined and coaxially arranged with the second through hole 702. In this way, the positioning and installation of the friction plate 8 is more convenient, and at the same time, the supporting effect of the pneumatic support hole 7 will not be affected.

[0030] Terminology explanation: Brake clearance: This article refers to the gap between the friction plates of each disc in the brake.

[0031] Axial aerodynamic force: This article refers to the aerodynamic force generated by the brake clearance when the inner hub rotates. The axial aerodynamic force is the main reason for the generation of belt torque and air loss power.

[0032] Belt torque: This article refers to the torque generated by the contact between the pressure plate, movable plate, static plate and pressure plate, that is, the torque generated by the contact between the plates without braking.

[0033] No-load power loss: This article refers to the ineffective work generated by the torque when no braking is performed.

[0034] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0035] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection 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).

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.

6. The air-supported brake according to claim 5, characterized in that: The pneumatic support hole (7) comprises a first through hole (701) and a second through hole (702), wherein the first through hole (701) is provided on the friction plate (8), and the second through hole (702) is provided on the first moving plate (2) or the second moving plate (4), and the diameter of the first through hole (701) is greater than the diameter of the second through hole (702).

7. The air-supported brake according to claim 6, characterized in that: A plurality of bosses (9) are fixedly connected to the left and right sides of the first movable plate (2) and the second movable plate (4); the bosses (9) are located inside the first through holes (701); the second through holes (702) penetrate the bosses (9); and a gap is left between the outer surface of the friction plate (8) and the bosses (9).

8. The air-supported brake according to claim 7, characterized in that: 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.

9. The air-supported brake according to claim 8, characterized in that: 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).

10. The air-supported brake according to claim 9, characterized in that: The communicating hole (7012) is arranged obliquely and coaxially with the second through hole (702).

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