阅读说明：本技术 一种刹车失灵的预保护方法与装置 (Pre-protection method and device for brake failure ) 是由 柳军铖 陈花园 刘伟 廖琰 师威帆 曾冲 陶冶 于 2021-09-27 设计创作，主要内容包括：本申请公开了一种刹车失灵的预保护方法与装置该方法包括：在整车后悬处设置散热组件；在制动蹄片内设置与所述散热组件相连的第一冷却管路；实时监测所述制动蹄片温度；当监测到所述制动蹄片温度位于第一预设温度和第二预设温度之间时,开启所述散热组件进行循环散热,当监测到所述制动蹄片温度高于第二预设温度时,发出警报,实现在制动蹄片温度较高时,使制动蹄片与制动鼓的温度迅速降低,确保制动器能够提供充足的制动力,并且在温度过高无法降下时,及时发出警报,提醒司机做出保护措施,能有效防止刹车失灵引发的交通事故。(The application discloses a pre-protection method and a device for brake failure, wherein the method comprises the following steps: a heat dissipation component is arranged at the rear suspension of the whole vehicle; a first cooling pipeline connected with the heat dissipation assembly is arranged in the brake shoe; monitoring the temperature of the brake shoe in real time; when the temperature of the brake shoe is monitored to be between a first preset temperature and a second preset temperature, the heat dissipation assembly is started to perform circulating heat dissipation, when the temperature of the brake shoe is monitored to be higher than the second preset temperature, an alarm is given out, when the temperature of the brake shoe is higher, the temperature of the brake shoe and the temperature of the brake drum are rapidly reduced, the brake is ensured to provide sufficient braking force, and when the temperature is too high and cannot be reduced, the alarm is given out in time, a driver is reminded to take protective measures, and traffic accidents caused by brake failure can be effectively prevented.)

1. A method of pre-protecting against brake failure, comprising:

a heat dissipation component is arranged at the rear suspension of the whole vehicle;

a first cooling pipeline connected with the heat dissipation assembly is arranged in the brake shoe;

monitoring the temperature of the brake shoe in real time;

when the brake shoe temperature is monitored to be between a first preset temperature and a second preset temperature, the heat dissipation assembly is started to conduct circulating heat dissipation;

and when the temperature of the brake shoe is monitored to be higher than a second preset temperature, an alarm is given.

2. The method for pre-protection against brake failure of claim 1,

arranging the heat dissipation assembly at a tail beam of the rear overhang of the whole vehicle, wherein the heat dissipation assembly comprises: the radiator comprises an expansion water tank, a radiator, an electric gear pump and a fan arranged at the front end of the radiator.

3. The method for pre-protection against brake failure of claim 1,

the cooling circuit is disposed in an area within the wear warning area of the brake shoe.

4. The method of pre-protecting against brake failure of claim 1, further comprising:

and a second cooling pipeline connected with the heat dissipation assembly is arranged in the brake drum.

5. The method for pre-protection against brake failure of claim 1,

the first preset temperature is 70% of the maximum temperature allowed by the brake shoe;

the second preset temperature is 90% of the maximum temperature allowed by the brake shoe.

6. A pre-protection device for brake failure, comprising:

the temperature sensor is used for monitoring the temperature of the brake shoe in real time;

the heat dissipation assembly is arranged at the rear suspension of the whole vehicle;

the first cooling pipeline is connected with the heat dissipation assembly and arranged inside the brake shoe;

the heat dissipation assembly is used for circularly dissipating heat when the temperature sensor monitors that the temperature of the brake shoe is between a first preset temperature and a second preset temperature;

and the temperature sensor is also used for sending a high-temperature signal to enable the alarm to send out an alarm when the temperature of the brake shoe is monitored to be at a second preset temperature.

7. The brake failure pre-protection arrangement according to claim 6,

the heat dissipation assembly is arranged at a tail beam of the rear suspension of the whole vehicle;

the heat dissipation assembly includes: the expansion water tank, the radiator, electronic gear pump and setting are in the fan of radiator front end.

8. The brake failure pre-protection arrangement according to claim 6,

the cooling line is disposed in an area within a wear warning region of the brake shoe.

9. The brake failure pre-protection arrangement according to claim 6, further comprising:

and the second cooling pipeline is also arranged in the brake drum.

10. The brake failure pre-protection arrangement according to claim 6,

the temperature sensor is connected with a cab instrument and is also used for feeding back the temperature of the brake shoe to the instrument.

Technical Field

The application relates to the field of automotive brakes, in particular to a pre-protection method and device for brake failure.

Background

At present, most of rear axle braking forms of commercial vehicles in the market are drum brakes, the drum brakes are low in price compared with disc brakes, the provided braking force is much larger than that of the disc brakes, but the drum brakes have the fatal defect, a driver needs to frequently use the brakes on a long downhill road section, the temperature of brake shoes is higher and higher, and the provided braking force is greatly reduced along with the rise of the temperature. If the cooling measures cannot be taken timely, the braking force provided by the brake shoes is greatly reduced, and the brake fails to work, so that traffic accidents are caused.

Disclosure of Invention

The application mainly aims to provide a pre-protection method and a pre-protection device for brake failure, and aims to solve the problems that the temperature of a brake shoe and a brake drum is greatly increased due to frequent braking, so that the braking force provided by a brake is greatly reduced, and the driving safety is affected.

In a first aspect, the present application provides a method of pre-protection against brake failure, the method comprising the steps of:

a heat dissipation component is arranged at the rear suspension of the whole vehicle;

a first cooling pipeline connected with the heat dissipation assembly is arranged in the brake shoe;

monitoring the temperature of the brake shoe in real time;

when the brake shoe temperature is monitored to be between a first preset temperature and a second preset temperature, the heat dissipation assembly is started to conduct circulating heat dissipation;

and when the temperature of the brake shoe is monitored to be higher than a second preset temperature, an alarm is given.

In some embodiments, the heat dissipation assembly is disposed at a tail boom of the rear suspension of the vehicle, wherein the heat dissipation assembly comprises: the radiator comprises an expansion water tank, a radiator, an electric gear pump and a fan arranged at the front end of the radiator.

In some embodiments, the cooling line is disposed in an area within a wear warning region of the brake shoe.

In some embodiments, a second cooling line is provided within the brake drum in communication with the heat sink assembly.

In some embodiments, the first preset temperature is 70% of a maximum temperature allowed for the brake shoes;

the second preset temperature is 90% of the maximum temperature allowed by the brake shoe.

In a second aspect, the present application also provides a pre-protection device for brake failure, the device comprising:

the temperature sensor is used for monitoring the temperature of the brake shoe in real time;

the heat dissipation assembly is arranged at the rear suspension of the whole vehicle;

the first cooling pipeline is connected with the heat dissipation assembly and arranged inside the brake shoe;

the heat dissipation assembly is used for circularly dissipating heat when the temperature sensor monitors that the temperature of the brake shoe is between a first preset temperature and a second preset temperature;

and the temperature sensor is also used for sending a high-temperature signal to enable the alarm to send out an alarm when the temperature of the brake shoe is monitored to be at a second preset temperature.

In some embodiments, the heat dissipation assembly is arranged at a tail beam of the rear suspension of the whole vehicle;

the heat dissipation assembly includes: the radiator comprises an expansion water tank, a radiator, an electric gear pump and a fan arranged at the front end of the radiator.

In some embodiments, the cooling circuit is disposed in an area within a wear warning region of the brake shoe.

In some embodiments, the brake failure pre-protection device further comprises a second cooling line, and the second cooling line is further arranged in the brake drum.

In some embodiments, the temperature sensor is connected to a cab instrument and is further configured to feed back the brake shoe temperature to the instrument.

The application provides a pre-protection method and a pre-protection device for brake failure, wherein a heat dissipation component is arranged at the rear suspension of a whole vehicle; a first cooling pipeline connected with the heat dissipation assembly is arranged in the brake shoe; monitoring the temperature of the brake shoe in real time; when the brake shoe temperature is monitored to be between a first preset temperature and a second preset temperature, the heat dissipation assembly is started to conduct circulating heat dissipation; when the temperature of the brake shoe is monitored to be higher than a second preset temperature, an alarm is sent out, so that the temperature of the brake shoe and the brake drum is reduced when the temperature of the brake shoe and the temperature of the brake drum are increased due to frequent braking, the drum brake can provide enough power, when the temperature of the brake shoe and the temperature of the brake drum cannot be reduced, the alarm is sent out in time, a driver is reminded to take safety measures in time, driving safety is effectively improved, an early warning function can be played before an accident happens, the probability of the accident is reduced, and unnecessary economic loss is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flowchart of a method for pre-protecting against brake failure according to an embodiment of the present disclosure;

FIG. 2 is a block diagram schematically illustrating a brake failure pre-protection device according to an embodiment of the present disclosure;

FIG. 3 is a schematic cooling diagram of the brake shoes and brake drum;

fig. 4 is a schematic diagram of a brake shoe cooling circuit arrangement.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a method for pre-protection against brake failure according to an embodiment of the present disclosure.

As shown in fig. 1, the method includes steps S1 through S5.

Step S1, arranging a heat dissipation assembly at the rear suspension of the whole vehicle;

step S2, arranging a first cooling pipeline connected with the heat dissipation assembly in the brake shoe;

step S3, monitoring the temperature of the brake shoe in real time;

step S4, when the temperature of the brake shoe is monitored to be between a first preset temperature and a second preset temperature, the heat dissipation assembly is started to conduct circulating heat dissipation;

and step S5, when the temperature of the brake shoe is monitored to be higher than a second preset temperature, an alarm is given out.

It should be noted that, in step S3, the temperature of the brake shoes may be measured by using a temperature sensor, and the measured temperature is fed back to an instrument in the cab, so that the driver can know the temperature of the brake shoes in time, and the temperature sensor used in this embodiment is an infrared temperature sensor.

Further, as shown in fig. 2, the heat dissipating assembly includes: the radiator comprises an expansion water tank, a radiator, an electric gear pump and a fan arranged at the front end of the radiator, wherein the radiating components are all arranged at the tail beam of a vehicle body.

It should be noted that, as shown in fig. 4, when the first cooling pipeline connected to the heat sink assembly is disposed in the brake shoe, the first cooling pipeline is disposed in the wear warning area of the brake shoe, so as to effectively prevent the pipeline from being worn out, which may result in liquid leakage in the cooling pipeline.

In a preferred embodiment, in addition to the first cooling pipeline arranged on the brake shoe sheet, a second cooling pipeline is arranged on the brake drum, and the first cooling pipeline and the second cooling pipeline are cooled together to greatly improve the cooling efficiency of the brake.

Specifically, as shown in fig. 2 and fig. 3, the heat dissipation assembly is opened to perform circulating heat dissipation, specifically, normal-temperature water is filled in the expansion water tank, the expansion water tank has a certain pressure, and normal-temperature water in the expansion water tank can be pumped into the heat dissipation assembly, and the normal-temperature water passes through the radiator and is cooled to low-temperature water by the radiator, and the low-temperature water flows into the first cooling pipeline and the second cooling pipeline, and the low-temperature water in the first cooling pipeline and the second cooling pipeline can absorb heat in the brake shoe and the brake drum to cool the brake shoe and the brake drum. The low temperature water in the first cooling pipeline and the second cooling pipeline becomes high temperature water because of absorbing the heat, the high temperature water is pumped into the radiator by the electric gear pump once more, it is low temperature water to cool off high temperature by the radiator, flow into first cooling pipeline and second cooling pipeline once more, be brake shoe and brake drum cooling temperature once more, and so circulate and reach the purpose of circulation heat dissipation cooling, and the front end of radiator has increased the fan, can increase the heat-sinking capability of radiator, improve the efficiency that the radiator cools off the high temperature water into low temperature water.

Further, the first preset temperature is 70% of the maximum allowable brake shoe temperature, and the second preset temperature is 90% of the maximum allowable brake shoe temperature. Brake shoeThe maximum permissible temperature is determined by calibration tests, and the braking force for braking is a m/s under the condition that the vehicle is fully loaded²The maximum brake shoe temperature to achieve the braking force is b ℃, and the temperature at the moment is the maximum allowable brake shoe temperature. The maximum temperature allowed by the brake shoe is different when different braking forces of vehicles are different.

Further, the first preset temperature is set to be 70% of the maximum temperature allowed by the brake shoe, the second preset temperature is 90% of the maximum temperature allowed by the brake shoe, the heat dissipation assembly can be started when the temperature reaches 70% of the maximum temperature allowed by the brake shoe, the brake shoe and the brake drum are cooled through the circulating heat dissipation and cooling method, when the temperature reaches 90% of the allowed temperature, the cooling method cannot meet the safety requirement, the brake shoe is too hot, the brake force is greatly reduced, danger is generated when the vehicle continues to drive, and at the moment, a voice prompt is sent out in the cab to remind a driver of taking emergency measures, such as rushing up a high-speed slope danger avoiding lane and the like.

Referring to fig. 2, fig. 2 is a schematic block diagram illustrating a structure of a brake failure pre-protection device according to an embodiment of the present application.

As shown in fig. 2, the apparatus includes:

the temperature sensor is used for monitoring the temperature of the brake shoe in real time; the heat dissipation assembly is arranged at the rear suspension of the whole vehicle; the first cooling pipeline is connected with the heat dissipation assembly and arranged inside the brake shoe;

the heat dissipation assembly is used for circularly dissipating heat when the temperature of the brake shoe monitored by the temperature sensor is between a first preset temperature and a second preset temperature;

the temperature sensor is also used for sending a high-temperature signal to enable the alarm to send out an alarm when the temperature of the brake shoe is monitored to be at a second preset temperature.

In some embodiments, the temperature sensor is further connected with an instrument of a cab, when the temperature of the brake shoe is measured, the temperature is fed back to the instrument, so that a driver can know the temperature of the brake shoe in time, and the temperature sensor adopted in the embodiment is an infrared temperature sensor.

Preferably, radiator unit all sets up in the tail boom department of whole car rear overhang, and radiator unit has included expansion tank, radiator, electronic gear pump and setting are in the fan of radiator front end.

It should be noted that, as shown in fig. 4, when the first cooling pipeline connected to the heat sink assembly is disposed in the brake shoe, the first cooling pipeline is disposed in the wear warning area of the brake shoe, so as to effectively prevent the pipeline from being worn out, which may result in liquid leakage in the cooling pipeline.

In a preferred embodiment, in addition to the first cooling pipeline arranged on the brake shoe sheet, the second cooling pipeline is arranged on the brake drum, and the first cooling pipeline and the second cooling pipeline are cooled together to greatly improve the cooling efficiency of the brake.

Specifically, the expansion tank is filled with water at normal temperature, and the expansion tank has certain pressure, can pump the normal temperature water in it into radiator unit, and normal temperature water passes through the radiator, is the low temperature water with the normal temperature water cooling by the radiator, and low temperature rivers flow into first cooling pipeline and second cooling pipeline, and the low temperature water in first cooling pipeline and the second cooling pipeline can absorb the heat in brake shoe and the brake drum, for brake shoe and the cooling of brake drum. The low temperature water in the first cooling pipeline and the second cooling pipeline becomes high temperature water because of absorbing the heat, the high temperature water is pumped into the radiator by the electric gear pump once more, it is low temperature water to cool off high temperature by the radiator, flow into first cooling pipeline and second cooling pipeline once more, be brake shoe and brake drum cooling temperature once more, and so circulate and reach the purpose of circulation heat dissipation cooling, and the front end of radiator has increased the fan, can increase the heat-sinking capability of radiator, improve the efficiency that the radiator cools off the high temperature water into low temperature water.

It is worth mentioning that the temperature sensor is used for monitoring the temperature of the brake shoes in real time, wherein the first preset temperature is set to be 70% of the maximum temperature allowed by the brake shoes, the second preset temperature is 90% of the maximum temperature allowed by the brake shoes, when the temperature reaches 70% of the maximum temperature allowed by the brake shoes, the brake drum and the brake shoes can be cooled through the device and the circulating cooling method, when the temperature reaches 90% of the allowed temperature, the cooling method has no effect, the brake shoes are already over-high in temperature, the braking force is greatly reduced, running is continued to generate danger, and at the moment, a voice prompt is sent out in a cab to remind a driver of taking emergency measures, such as rushing up a high-speed slope danger-avoiding lane and the like.

Furthermore, the maximum temperature allowed by the brake shoe is obtained by a calibration test, and the braking force for braking is a m/s under the condition that the vehicle is fully loaded²The maximum brake shoe temperature to achieve the braking force is b ℃, and the temperature at the moment is the maximum allowable brake shoe temperature. The maximum temperature allowed by the brake shoe is different when different braking forces of vehicles are different.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention, and these modifications or substitutions are intended to be included in the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.