阅读说明：本技术 一种减振降噪制动器 (Vibration-damping noise-reducing brake ) 是由 王金元 赵春婕 李栋墚 于 2021-08-10 设计创作，主要内容包括：本发明专利公开了一种减振降噪制动器,包括制动鼓、半轴支撑座、制动底盘、摩擦片、中空圆筒、制动缸、复位弹簧、制动蹄、筋板、浅槽、深槽、筋板压条、内圆柱面压条、压板,所述制动底盘一侧中心、顶端和底端分别固定安装有所述半轴支撑座、所述制动缸和所述压板,所述制动缸的顶杆与所述制动蹄顶端固定连接,所述制动蹄底端与所述压板的销孔活动连接,所述制动蹄中部设有所述筋板,所述制动蹄的外圆柱面上固定安装有所述摩擦片,能够在复杂的制动条件下表现出较强的减振降噪效果,能够大幅度地耗散制动过程中的振动能量,从而减少制动过程中的噪声污染及其负面作用。(The invention discloses a vibration-damping noise-reducing brake, which comprises a brake drum, a half axle supporting seat, a brake chassis, a friction plate, a hollow cylinder, a brake cylinder, a reset spring, a brake shoe, a rib plate, a shallow groove, a deep groove, a rib plate pressing strip, an inner cylindrical surface pressing strip and a pressing plate, the half shaft supporting seat, the brake cylinder and the pressure plate are respectively and fixedly arranged at the center, the top end and the bottom end of one side of the brake chassis, the ejector rod of the brake cylinder is fixedly connected with the top end of the brake shoe, the bottom end of the brake shoe is movably connected with the pin hole of the pressure plate, the rib plate is arranged in the middle of the brake shoe, and the friction plate is fixedly mounted on the outer cylindrical surface of the brake shoe, so that a strong vibration and noise reduction effect can be shown under a complex braking condition, vibration energy in the braking process can be greatly dissipated, and noise pollution and negative effects in the braking process are reduced.)

1. The utility model provides a stopper of making an uproar falls in damping, includes brake drum (1), semi-axis supporting seat (2), brake chassis (3), friction disc (4), cavity drum (5), brake cylinder (6), reset spring (7), brake shoe (8), gusset (9), shallow slot (10), deep trouth (11), gusset layering (12), inner cylinder layering (13), clamp plate (14), characterized by: brake chassis (3) one side center, top and bottom respectively fixed mounting have semi-axis supporting seat (2) brake jar (6) with clamp plate (14), the ejector pin of brake jar (6) with brake shoe (8) top fixed connection, brake shoe (8) bottom with the pinhole swing joint of clamp plate (14), brake shoe (8) middle part is equipped with gusset (9), fixed mounting has on the outer face of cylinder of brake shoe (8) friction disc (4).

2. A vibration and noise reducing brake as claimed in claim 1, wherein: the brake drum (1) is fixedly connected with wheels of a common vehicle, the half shaft supporting seat (2) is fixedly connected with the brake chassis (3), and the half shaft supporting seat and the brake chassis are arranged on a chassis suspension of the common vehicle.

3. A vibration and noise reducing brake as claimed in claim 1, wherein: the brake shoe is characterized in that the inner cylindrical surface of the brake shoe (8) is provided with the shallow grooves (10), the number of the shallow grooves (10) is 2, the 2 shallow grooves (10) are respectively positioned at two sides of the rib plate (9) and are symmetrically distributed, the inner cylindrical surface pressing strips (13) are welded on the shallow grooves (10) in a sealing mode, and a closed cavity is formed between the shallow grooves (10) and the inner cylindrical surface pressing strips (13).

4. A vibration and noise reducing brake as claimed in claim 1, wherein: the deep groove structure is characterized in that 3 deep grooves (11) are formed in one side face of the rib plate (9) at equal intervals, two ends of each deep groove (11) are of a U-shaped structure, spherical metal particles are filled in the deep grooves (11), rib plate pressing strips (12) are welded on the deep grooves (11) in a sealing mode, a closed cavity is formed between each deep groove (11) and each rib plate pressing strip (12), and the spherical metal particles are located inside the closed cavity.

5. A vibration and noise reducing brake as claimed in claim 1, wherein: the brake shoe is characterized in that two ends of the hollow cylinder (5) are respectively fixedly connected with the reset springs (7), spherical metal particles are filled in the hollow cylinder (5), the number of the reset springs (7) is 2, and one ends, far away from the hollow cylinder (5), of the reset springs (7) are movably connected with the through holes in the brake shoe (8).

6. A vibration and noise reducing brake as claimed in claim 1, wherein: the number of the brake shoes (8) is 2, and the brake shoes are respectively and symmetrically distributed on two sides of the half shaft supporting seat (2).

7. A vibration and noise reducing brake as claimed in claim 1, wherein: the rib plate pressing strip (12) is an arc-shaped flat plate with two U-shaped ends.

8. A vibration and noise reducing brake as claimed in claim 1, wherein: the side surface of the inner cylindrical surface pressing strip (13) is an arc cylindrical surface.

Technical Field

The invention relates to a brake control system of a general vehicle for transportation or a component thereof, in particular to a vibration and noise reduction brake.

Background

In the running process of the vehicle, the brake can achieve the purpose of forced deceleration or stop through different operations of a driver, so that the vehicle can run stably, and the safety of the driver and passengers can be ensured under emergency. Although the conventional brake has wide application, stable and reliable structure and low manufacturing cost, the conventional brake has the defects that sliding friction and mechanical vibration generated by braking during the running process of a vehicle generate sharp braking noise. The instability factors of the conventional braking or the emergency braking of the vehicle are more, and the braking noises from different sources can be mixed together to generate stronger noise interference, so that the emotion and riding comfort of a driver and passengers are influenced, the manipulation safety and stability of the driver are also influenced, and the consumer can doubt the performance of the product, and the sale of the brake product and even the whole vehicle is influenced. Many vehicle manufacturers have therefore placed higher design and performance requirements on brake manufacturers: on the premise of ensuring high-efficiency braking, the brake noise is reduced as much as possible, and the sound comfort of a common vehicle is improved. Most brake manufacturers do not have a clear and effective solution due to design, manufacturing and machining process limitations, and equipment manufacturers have a great deal of research into conventional brake noise control, which attempts to reduce high frequency noise generated during vehicle braking, respectively, from the perspective of brake construction and materials, but the effect is not significant. To date, no complete set of solutions and devices exist that can better suppress or eliminate such braking noise.

Disclosure of Invention

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a vibration and noise reducing brake.

According to the technical scheme that this application embodiment provided, stopper of making an uproar falls in damping, including brake drum, semi-axis supporting seat, brake chassis, friction disc, cavity drum, checking cylinder, reset spring, brake shoe, gusset, shallow slot, deep trouth, gusset layering, interior cylinder layering, clamp plate, there are fixed mounting at brake chassis one side center, top and bottom respectively semi-axis supporting seat the checking cylinder with the clamp plate, the ejector pin of checking cylinder with brake shoe top fixed connection, the brake shoe bottom with the pinhole swing joint of clamp plate, the brake shoe middle part is equipped with the gusset, fixed mounting has on the outer face of cylinder of brake shoe the friction disc.

In the invention, the brake drum is fixedly connected with the wheels of a common vehicle, the half shaft supporting seat is fixedly connected with the brake chassis, and the half shaft supporting seat and the brake chassis are arranged on a chassis suspension of the common vehicle.

In the invention, the inner cylindrical surface of the brake shoe is provided with 2 shallow grooves, the 2 shallow grooves are respectively positioned at two sides of the rib plate and are symmetrically distributed, the inner cylindrical surface pressing strips are welded on the shallow grooves in a sealing mode, and a closed cavity is formed between the shallow grooves and the inner cylindrical surface pressing strips. The closed cavity formed by the shallow groove and the inner cylindrical surface pressing strip is a necessary condition for forming air film damping.

In the invention, 3 deep grooves are arranged on one side surface of the rib plate at equal intervals, two ends of each deep groove are of a U-shaped structure, spherical metal particles are filled in the deep grooves, rib plate pressing strips are welded on the deep grooves in a sealing mode, a closed cavity is formed between each deep groove and each rib plate pressing strip, and the spherical metal particles are located in the closed cavity. The closed cavity formed by the deep groove and the rib plate pressing strip and the spherical metal particles filled in the deep groove are necessary conditions for forming non-blocking particle damping.

In the invention, two ends of the hollow cylinder are respectively and fixedly connected with the return springs, spherical metal particles are filled in the hollow cylinder, the number of the return springs is 2, and one end of each return spring, which is far away from the hollow cylinder, is movably connected with the through hole in the brake shoe. The hollow cylinder and the spherical metal particles filled in the hollow cylinder are necessary conditions for forming non-obstructive particle damping.

In the invention, the number of the brake shoes is 2, and the brake shoes are respectively and symmetrically distributed on two sides of the half shaft supporting seat.

In the invention, the rib plate pressing strip is an arc-shaped flat plate with two U-shaped ends.

In the invention, the side surface of the inner cylindrical surface pressing bar is an arc cylindrical surface.

To sum up, the beneficial effect of this application: the damping and noise reduction device can show a strong damping and noise reduction effect under a complex braking condition. The brake shoe is reasonably provided with the cavities with different depths, and the combined vibration and noise reduction design of air film damping of the shallow groove cavity, non-obstructive particle damping in the deep groove cavity and the hollow cylinder and a cubic-stiffness spring mass vibrator consisting of the hollow cylinder and a pair of reset springs is utilized, so that the vibration and the brake noise of the whole structure can be effectively inhibited, wherein one end of each reset spring is connected with the hollow cylinder, and the other end of each reset spring is arranged on a hole position of a rib plate of the brake shoe, so that the cubic-stiffness spring mass vibrator is formed and also serves as a non-obstructive particle damping vibration absorber, a vibration-damped object can be better coupled, the matching frequency is wider, the random vibration frequency can be better adapted, and the vibration in multiple directions, angles and amplitudes can be matched. The design can greatly dissipate vibration energy in the braking process, so that noise pollution and negative effects thereof in the braking process are reduced.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of the external structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of a brake shoe according to the present invention;

fig. 4 is a comparison of the average a-weighted sound pressure level frequency response functions of the prior art product and the present solution.

Reference numbers in the figures: a brake drum-1; a half shaft supporting seat-2; a brake chassis-3; a friction plate-4; a hollow cylinder-5; a brake cylinder-6; a return spring-7; a brake shoe-8; a rib plate-9; shallow groove-10; a deep groove-11; pressing strips-12 for the rib plates; inner cylindrical surface depression bar-13; a pressure plate-14.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in figures 1-3, the vibration-damping noise-reducing brake comprises a brake drum 1, a half shaft support seat 2, a brake chassis 3, a friction plate 4, a hollow cylinder 5, a brake cylinder 6, a return spring 7, a brake shoe 8, a rib plate 9, a shallow groove 10, a deep groove 11, a rib plate pressing strip 12, an inner cylindrical surface pressing strip 13 and a pressing plate 14, wherein the half shaft support seat 2, the brake cylinder 6 and the pressing plate 14 are fixedly installed at the center, the top end and the bottom end of one side of the brake chassis 3 respectively, an ejector rod of the brake cylinder 6 is fixedly connected with the top end of the brake shoe 8, and the bottom end of the brake shoe 8 is movably connected with a pin hole of the pressing plate 14. Under the push of the ejector rod of the brake cylinder 6, the brake shoe 8 can rotate around the pin hole of the pressure plate 14, and simultaneously, the brake shoe 8 is opened towards two sides to extrude the brake drum 1, so that the friction braking effect is achieved. A rib plate 9 is arranged in the middle of the brake shoe 8, and a friction plate 4 is fixedly arranged on the outer cylindrical surface of the brake shoe 8. The number of the brake shoes 8 is 2, and the brake shoes are respectively and symmetrically distributed on two sides of the half-shaft supporting seat 2. The brake drum 1 is fixedly connected with the wheel of a general vehicle and rotates synchronously with the wheel, the half shaft supporting seat 2 is used for supporting a half shaft of the vehicle and is fixedly connected with the brake chassis 3, and the half shaft supporting seat and the brake chassis are arranged on a chassis suspension of the general vehicle.

As shown in fig. 2 and 3, the inner cylindrical surface of the brake shoe 8 is provided with 2 shallow grooves 10, the number of the shallow grooves 10 is 2, the 2 shallow grooves 10 are respectively positioned at two sides of the rib plate 9 and are symmetrically distributed, inner cylindrical surface pressing strips 13 are welded on the shallow grooves 10 in a sealing mode, a closed cavity is formed between the shallow grooves 10 and the inner cylindrical surface pressing strips 13, the depth of the shallow grooves 10 is 1/5 of the thickness of the cylindrical surface of the brake shoe 8, the width of the shallow grooves 10 is 1/4 of the width of the cylindrical surface of the brake shoe 8, and the circumferential length of the shallow grooves 10 is 2/3 of the maximum circumferential length of the inner cylindrical surface of the brake shoe 8. The side surface of the inner cylindrical surface bead 13 is an arc cylindrical surface, the thickness of the inner cylindrical surface bead 13 is 1mm, the width of the inner cylindrical surface bead 13 is 2mm larger than that of the shallow groove 10, and the circumferential length of the inner cylindrical surface bead 13 exceeds that of the shallow groove 10 by 2 mm.

As shown in fig. 2 and 3, 3 deep grooves 11 are arranged on one side surface of a rib plate 9 at equal intervals, two ends of each deep groove 11 are of a U-shaped structure, the depth of each deep groove 11 is 3/5 of the thickness of the rib plate 9, the radial width of each deep groove 11 is 2/3 of the narrowest width of the rib plate 9, the circumferential length of each deep groove 11 is 1/5 of the maximum circumferential length of the rib plate 9, spherical metal particles are filled in the deep grooves 11, the diameter of each spherical metal particle is 1/8 of the depth of the deep groove 11, the filling volume of each spherical metal particle is 3/5 of the volume of the deep groove 11, rib plate pressing strips 12 are welded on the deep grooves 11 in a sealing mode, a closed cavity is formed between each deep groove 11 and each rib plate pressing strip 12, and the spherical metal particles are located in the closed cavity. The rib plate pressing strip 12 is an arc-shaped flat plate with two U-shaped ends, the thickness of the rib plate pressing strip 12 is 1/5 of the thickness of the rib plate 9, the radial width of the rib plate pressing strip 12 is 2mm larger than that of the deep groove 11, and the circumferential length of the rib plate pressing strip 12 exceeds 2mm beyond two sides of the position of the deep groove 11 by 3.

As shown in fig. 2, two ends of the hollow cylinder 5 are respectively fixedly connected with a return spring 7, spherical metal particles are filled in the hollow cylinder 5, the number of the return springs 7 is 2, and one end of each return spring 7, which is far away from the hollow cylinder 5, is movably connected with a through hole on the brake shoe 8.

The invention relates to a vibration-damping noise-reducing brake which is one of drum brakes and is a novel vibration-damping noise-reducing brake developed on the basis of the structure of the traditional brake. The design is easy to implement, and the purposes of vibration reduction and noise reduction can be achieved on the premise of not reducing the original braking efficiency. The brake transmission mechanism is utilized to enable the brake shoe 8 to press the brake friction plate 4 on the inner side surface of the brake drum 1, the brake drum 1 and the wheel rotate synchronously, meanwhile, friction braking force is generated, the wheel is decelerated or stopped within the shortest distance according to requirements, or the parking reliability of the vehicle is guaranteed, and the vehicle is prevented from automatically sliding.

The invention provides a design scheme of a vibration-damping noise-reducing brake from a key component brake shoe 8 and a return spring 7 connected with the key component brake shoe for the first time, which comprises the following steps: by reasonably arranging cavities with different depths on the brake shoe 8, the vibration and the brake noise of the whole structure can be effectively inhibited by utilizing the combined vibration attenuation and noise reduction design of air film damping of a cavity of a shallow groove 10, non-obstructive particle damping in a cavity of a deep groove 11 and a hollow cylinder 5 and a cubic-stiffness spring mass vibrator consisting of the hollow cylinder 5 and a pair of reset springs 7, so that the noise pollution and the negative effects in the brake process are reduced.

As shown in fig. 4, the effect contrast explains that: under the same maximum braking force working condition, the improved patent prototype and the improved original equipment are respectively used for realizing multi-point sampling analysis on a spherical surface 0.3m away from the brake to obtain an average A weighting sound pressure level frequency response function, as shown in figure 4, the noise data of the patent prototype is lower than that of the original equipment by about 3dBA on the whole, and the braking noise of the brake is effectively reduced.

The foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the invention according to the present application is not limited to the technical solutions in which the above-described technical features are combined in a specific manner, and also covers other technical solutions in which the above-described technical features or their equivalent are combined arbitrarily without departing from the inventive concept described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.