CN119934177A - Air-supported brake - Google Patents
Air-supported brake Download PDFInfo
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- CN119934177A CN119934177A CN202510438269.6A CN202510438269A CN119934177A CN 119934177 A CN119934177 A CN 119934177A CN 202510438269 A CN202510438269 A CN 202510438269A CN 119934177 A CN119934177 A CN 119934177A
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Abstract
The invention provides a brake with an air support, which belongs to the technical field of brakes and comprises a pressurizing disc, a first movable disc, a static disc, a second movable disc and a pressure-bearing disc, wherein the pressurizing disc is tightly contacted 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 during braking, and friction plates are fixedly connected to one sides of the pressurizing disc, the first movable disc, the static disc, the second movable disc and the pressure-bearing disc, which are close to each other. According to the invention, the inclined pneumatic support holes are formed in the first movable disc and the second movable disc, and the brake rotates together with the first movable disc and the second movable disc when the inner hub rotates at a high speed, so that a centrifugal effect is generated, flow is generated in the pneumatic support holes, and pressure differences are generated on two sides of the inclined pneumatic support holes, and the pressure differences can prevent the brake discs from contacting under the condition of not braking, and keep a braking gap in dynamic balance, thereby reducing torque and air loss power of a belt, reducing loss and reducing abrasion.
Description
Technical Field
The invention relates to the technical field of brakes, in particular to a brake with an air support.
Background
The braking device is a core component for ensuring the normal operation and the system safety of a complex mechanical system. Brakes are widely used as key components of braking systems in important vehicles such as aviation, automobiles, high-speed trains and various industrial and military equipment devices. Dry plate brakes are widely used in civil aircraft and heavy-duty military vehicles.
Under normal running, the friction plates of the existing multi-plate brake have no mechanical structure for axial positioning and supporting, so that the gaps between the dynamic friction plates and the static friction plates are uncontrollable, or the axial stress is unbalanced, so that the friction plates can be contacted when not braked, the belt torque and the idle loss power can be increased, the mechanical loss is increased, the abrasion speed of the friction plates is increased, and the service life of the brake is finally shortened. The main reason for this problem is the axial aerodynamic force asymmetry and imbalance due to the structural asymmetry of the brake, which tends to shift the friction plate to one side, resulting in contact without braking.
Disclosure of Invention
The invention aims to solve the technical problems that under normal running, the gap between a dynamic friction plate and a static friction plate of the existing multi-plate brake is uncontrollable or the axial stress is unbalanced, so that the torque of a belt and the air loss power are increased, the mechanical loss is increased, the abrasion speed of the friction plate is accelerated, and the service life of the brake is finally shortened.
In order to solve the technical problems, the invention provides the following technical scheme:
The brake with air support comprises a pressurizing disc, a first movable disc, a static disc, a second movable disc and a pressure-bearing disc, wherein the pressurizing disc is tightly contacted 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 during braking, friction plates are fixedly connected with one sides of the pressurizing disc, the first movable disc, the static disc, the second movable disc and the pressure-bearing disc, which are close to each other,
The first movable disk and the second movable disk are provided with a plurality of pneumatic supporting holes, the pneumatic supporting holes obliquely penetrate through the left side and the right side of the first movable disk and the right side of the second movable disk, and the inner central walls of the first movable disk and the second movable disk are fixedly connected with a plurality of guide vanes.
Preferably, the pneumatic support hole is a round hole and penetrates through the friction plate, and one end of the pneumatic support hole, which is far away from the static disc, is close to the outer sides of the first movable disc and the second movable disc.
Preferably, the friction plates are a plurality of and uniformly distributed on the pressurizing disc, the first movable disc, the static disc, the second movable disc and the bearing disc in circumference.
Preferably, the inner walls of the centers of the first movable disk and the second movable disk are fixedly connected with a plurality of guide vanes.
Preferably, an included angle between the axis of the pneumatic supporting hole and the plane of the first movable disk and the plane of the second movable disk is 15-35 degrees.
Preferably, the pneumatic supporting hole comprises a first through hole and a second through hole, the first through hole is formed in the friction plate, the second through hole is formed in the first movable disc or the second movable disc, and the diameter of the first through hole is larger than that of the second through hole.
Preferably, the left and right sides of first movable disk and second movable disk all fixedly connected with a plurality of bosss, the boss is located the inside of first through-hole, the boss is run through to the second through-hole, leave the clearance between the surface of friction disc and the boss.
Preferably, the boss is perpendicular to the first movable disk and the second movable disk, and the boss and the first movable disk or the second movable disk are integrally forged and formed.
Preferably, the first through hole includes a positioning hole and a communication hole, and the boss is located inside the positioning hole.
Preferably, the communication hole is obliquely arranged and coaxially arranged with the second communication hole.
Compared with the prior art, the invention has at least the following beneficial effects:
According to the scheme, the inclined pneumatic supporting holes are formed in the first movable disc and the second movable disc, when the inner hub rotates at a high speed, the brake rotates together with the first movable disc and the second movable disc, so that a centrifugal effect is generated, flow is generated in the pneumatic supporting holes, pressure differences are generated on two sides of the inclined pneumatic supporting holes, the pressure differences can prevent the brake discs from contacting under the condition that braking is not performed, a braking gap is kept in dynamic balance, so that torque and air loss are reduced, loss and abrasion are reduced, heat generated by braking can be timely dissipated through the pneumatic supporting holes, the temperature of a friction plate is prevented from being too high, follow-up effective braking is guaranteed, after the gap between the brake discs is changed, the pressure differences generated by the pneumatic centrifugal effect are correspondingly changed, the positions of the brake discs can be restored to the balance positions, and therefore self-adaptive control is achieved.
Drawings
The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.
FIG. 1 is a schematic perspective view of an air-supported brake;
FIG. 2 is a schematic structural view of a pressure plate of the brake with air support;
FIG. 3 is a schematic structural view of a stationary disc with an air-supported brake;
FIG. 4 is a schematic view of the structure of a pressure plate of an air-supported brake;
FIG. 5 is a schematic structural view of a rotor with an air-supported brake;
FIG. 6 is a schematic cross-sectional view of a rotor with an air-supported brake;
FIG. 7 is a schematic cross-sectional view of an air bearing aperture of an air bearing brake;
FIG. 8 is an enlarged schematic view of the pneumatic support aperture of the brake with air support;
FIG. 9 is a schematic view of an installation cross-section of a friction plate with an air-supported brake.
[ Reference numerals ]
1. The device comprises a pressurizing disc, a first movable disc, a first fixed disc, a second movable disc, a pressure-bearing disc, a guide vane, a pneumatic supporting hole, a friction plate, a boss, 701, a first through hole, 702, a second through hole, 7011, a positioning hole, 7012 and a communication hole, wherein the pressurizing disc, the first movable disc, the fixed disc, the second movable disc, the pressure-bearing disc, the guide vane, the pneumatic supporting hole, the friction plate, the 9, the boss, the 701, the first through hole, the 702 and the second through hole are arranged.
While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.
Detailed Description
The present invention provides an air-supported brake that is described in detail below with reference to the accompanying drawings and specific embodiments. While the invention has been described herein in detail in order to make the embodiments more detailed, the following embodiments are preferred and can be embodied in other forms as well known to those skilled in the art, and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention to the specific forms disclosed herein.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.
It is to be understood that the meaning of "on," "above," "over," and "above" in this disclosure should be read in the broadest manner so that "on" means not only "directly on" something but also includes "on" something with intervening features or layers therebetween, and "on" or "above" means not only "on" or "over" but also may include the meaning of "on" or "over" it without intervening features or layers therebetween.
Furthermore, spatially relative terms such as "under," "below," "lower," "above," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.
Example 1
As shown in fig. 1-6, the embodiment of the invention provides an air-supported brake, which comprises a pressure plate 1, a first movable plate 2, a static plate 3, a second movable plate 4 and a pressure-bearing plate 5, wherein the first movable plate 2 and the second movable plate 4 are identical in size and structure, the pressure plate 1, the static plate 3 and the pressure-bearing plate 5 do not rotate, the pressure plate 1 has higher strength, and the main function is that the pressure plate 1 is subjected to axial force when in braking, such as a piston is pressed by the piston, so that the pressure plate 1, the first movable plate 2, the static plate 3, the second movable plate 4 and the pressure-bearing plate 5 are in close contact, and braking is performed by friction force;
Specifically, the first movable disc 2 and the second movable disc 4 are driven to rotate by the transmission shaft so as to drive the vehicle to run. During braking, the friction resistance generated by the friction plates 8 at the two sides of the brake block the rotation of the brake, so that the brake is performed;
the pressing disc 1 is used for enabling the pressing disc 1, the first movable disc 2, the static disc 3, the second movable disc 4 and the pressure bearing disc 5 to be in close contact through extrusion during braking, friction plates 8 are fixedly connected to the sides, close to the pressure bearing disc 5, of the pressing disc 1, the first movable disc 2, the static disc 3, the second movable disc 4 and the pressure bearing disc 5, and the friction plates 8 are multiple in number and uniformly distributed on the pressing disc 1, the first movable disc 2, the static disc 3, the second movable disc 4 and the pressure bearing disc 5 in a circumferential mode;
the structure of the pressure disc 1 is shown in fig. 2, the friction plate 8 is attached to the inner side of the pressure disc 1, the friction plate 8 is a main friction part, the friction plate 8 is connected through bolts or special connecting pieces, and the pressure disc is convenient to replace, the static disc 3 is a main friction part, the friction plates 8 are arranged on two sides of the pressure disc, the structure of the pressure disc is shown in fig. 3, the main function of the pressure disc 5 is to fix the whole brake, the friction plate 8 is attached to the inner side of the pressure disc, and the structure of the pressure disc is shown in fig. 4;
Friction plates 8 are attached to the inner sides of the pressurizing plate 1 and the pressure-bearing plate 5, and the friction plates 8 can effectively prevent the parts from being reduced in service life due to friction;
The first movable disk 2 and the second movable disk 4 are respectively provided with a plurality of pneumatic supporting holes 7, as shown in figures 5 and 6, g1, g2, g3 and g4 are braking gaps, d1 and d2 are diameters of the pneumatic supporting holes 7, alpha 1 and alpha 2 are inclination angles of the pneumatic supporting holes 7, the pneumatic supporting holes 7 penetrate through the first movable disk 2 and the second movable disk 4 and are communicated with g1, g2 and g3 and g4 in a gas flow manner, the pneumatic supporting holes 7 not only improve the heat dissipation effect, but also generate pneumatic supporting, the included angle between the axis of the pneumatic supporting holes 7 and the plane of the first movable disk 2 and the plane of the second movable disk 4 is 15-35 degrees, the left and right sides that pneumatic supporting hole 7 slope runs through first movable disk 2 and second movable disk 4, pneumatic supporting hole 7 is the round hole and runs through friction disc 8, the one end that the static dish 3 was kept away from to pneumatic supporting hole 7 is close to the outside of first movable disk 2 and second movable disk 4, the equal fixedly connected with of the inner wall in center of first movable disk 2 and second movable disk 4a plurality of guide vanes 6, guide vane 6 is located first movable disk 2 and second movable disk 4, its main effect is that make the air current circulate fast in the interior hub, with pneumatic supporting hole 7 intercoupling, realize better pneumatic supporting effect.
Working principle:
When braking, the pressurizing disc 1 receives braking force to axially move, the first moving disc 2, the static disc 3, the second moving disc 4 and the pressure bearing disc 5 mutually squeeze friction braking due to the axial force of the pressurizing disc 1 and generate resistance force by friction plates 8 because the braking force is far greater than the axial aerodynamic force and the pneumatic supporting force, so as to achieve the braking effect, after the braking is released, the pressurizing disc 1, the first moving disc 2, the static disc 3, the second moving disc 4 and the pressure bearing disc 5 are reset, gaps are formed among the friction plates 8, the first moving disc 2 and the second moving disc 4 rotate together with the first moving disc and the second moving disc, so that a centrifugal effect is generated, airflow flows in the pneumatic supporting hole 7, and pressure difference is generated at two sides of the inclined pneumatic supporting hole 7, the pressure difference can prevent the brake discs from contacting under the condition that the braking is not performed, the braking gaps are in dynamic balance because the pneumatic supporting force generated by the pneumatic supporting hole 7 is kept, the braking gaps g1, g2, g3 and g4 are always greater than 0, the mutual contact band and the exhaust torque loss are avoided, and the exhaust torque loss are reduced;
And meanwhile, after braking, the braking plate is released, the air flow passes through the diversion trench under the action of the diversion vane 6 and then forms pneumatic support under the action of the pneumatic support hole 7, so that the effects of rapidly separating the braking disc and maintaining a braking gap are achieved, and meanwhile, the heat generated by friction can be rapidly taken away.
Example two
The difference from the first embodiment is that, as shown in fig. 6 to 8, 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, the second through hole 702 is opened on the first movable disk 2 or the second movable disk 4, and the diameter of the first through hole 701 is larger than that of the second through hole 702;
The expansion coefficients of the first movable disc 2 or the second movable disc 4 and the friction plate 8 are different, so that expansion caused by the temperature rise of the friction plate 8 and the movable disc is avoided, the step which is used for blocking the air flow is formed by enlarging the second through hole 702 of the movable disc, the air flow is better caused to pass through, and the pneumatic support is carried out.
As shown in fig. 7 and 8, in this embodiment, the left and right sides of the first movable disc 2 and the second movable disc 4 are fixedly connected with a plurality of bosses 9, the bosses 9 are located in the first through holes 701, the second through holes 702 penetrate the bosses 9, gaps are left between the outer surfaces of the friction plates 8 and the bosses 9, the bosses 9 are perpendicular to the first movable disc 2 and the second movable disc 4, and the bosses 9 and the first movable disc 2 or the second movable disc 4 are integrally formed by forging and pressing.
As shown in fig. 8 and 9, in the present embodiment, the first through hole 701 includes a positioning hole 7011 and a communication hole 7012, the boss 9 is located inside the positioning hole 7011, the communication hole 7012 is disposed obliquely and coaxially with the second through hole 702, so that the positioning and mounting of the friction plate 8 are more convenient, and the supporting effect of the pneumatic supporting hole 7 is not affected.
Term interpretation:
brake clearance, herein referred to as the gap between the friction plates of the discs in the brake.
Axial aerodynamic force, herein referred to as aerodynamic force generated by the brake clearance when the inner hub rotates, is the primary cause of belt exhaust torque and lost power.
The torque of the belt row refers to the torque generated by contact of the pressing disc, the moving disc, the static disc and the pressure-bearing disc, namely the torque generated by contact of the discs under the condition of no braking.
Lost power, herein refers to the ineffective work due to ribbon displacement torque when no braking is applied.
The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the above embodiments may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510438269.6A CN119934177B (en) | 2025-04-09 | 2025-04-09 | Air-supported brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510438269.6A CN119934177B (en) | 2025-04-09 | 2025-04-09 | Air-supported brake |
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| Publication Number | Publication Date |
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| CN119934177A true CN119934177A (en) | 2025-05-06 |
| CN119934177B CN119934177B (en) | 2025-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510438269.6A Active CN119934177B (en) | 2025-04-09 | 2025-04-09 | Air-supported brake |
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| CN108468728A (en) * | 2018-05-17 | 2018-08-31 | 湖南世鑫新材料有限公司 | Bullet train complete disc brake |
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| CN111196256A (en) * | 2020-01-19 | 2020-05-26 | 山东联星能源集团有限公司 | Basalt fiber automobile brake disc |
| CN112065894A (en) * | 2020-08-24 | 2020-12-11 | 瑞卡斯(南京)精密机械有限公司 | Stable brake disc device for elevator and preparation method |
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|---|---|
| CN119934177B (en) | 2025-06-20 |
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