Automobile braking device capable of collecting braking dust

Abstract

The invention relates to the technical field of braking, in particular to an automobile braking device capable of collecting braking dust, which comprises a hub, a brake disc fixedly mounted on the hub, a connecting frame arranged above the brake disc and fixedly mounted on an automobile steering gear, and a brake pushing device fixedly mounted on the connecting frame. The brake pushing device is used for pushing the brake pad to extrude the brake disc and achieve the braking effect. According to the device, complete sealing of the brake disc can be effectively achieved through the connecting frame, the side face sealing shell and the bottom sealing shell, then adsorption and collection of brake dust are achieved through the adsorption layer and the filtering layer located in the collecting cavity, and air provided by the air supply device can cool the surface of the brake disc. The problems that an existing automobile brake system lacks a brake dust collection function and a brake disc lacks an active heat dissipation function are solved, air pollution caused by brake dust can be effectively reduced, and the service life of the brake disc is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of braking technology, and specifically to an automotive braking device capable of collecting braking dust. Background Art

[0002] With the development of China's economy, the per capita car ownership is increasing. Therefore, the pollution caused by cars has become an urgent problem to be solved. The exhaust gas emitted by traditional gasoline vehicles has been able to greatly reduce exhaust gas pollution after treatment. And as gasoline vehicles are gradually replaced by electric vehicles, the pollution caused by automotive exhaust emissions is expected to be completely controlled. However, there is still no good solution to the problem that the braking dust generated during the braking process of both gasoline vehicles and electric vehicles pollutes the air.

[0003] Braking dust is generated by the friction between the brake pads and the brake disc when the brake pads in the automotive braking system clamp the brake disc. Currently, almost all the braking dust generated by cars on the market is directly discharged into the air. The main reason is that a large amount of heat is generated during the braking process of the brake disc, so the brake disc needs to be in contact with the air to maintain the heat dissipation effect. Therefore, it is difficult to add a braking dust collection system to the brake disc. The patent number publication number CN114368376A, and the patent name is an invention of an automotive braking dust absorption device, which provides a braking dust collection device that can collect braking dust by using a dust collection groove arranged around the brake disc. However, this dust collection groove does not completely wrap the brake disc, resulting in the leakage of braking dust from the rotating gap between the brake disc and the dust collection groove. Thus, fine-particle braking dust cannot be completely collected, and therefore, the pollution of the air by braking dust cannot be completely avoided. And although this semi-open braking dust collection system can ensure the heat dissipation effect of the brake disc by relying on natural air cooling, it is also easy for dust particles in the air to enter the dust collection groove, thus requiring regular maintenance and cleaning.

[0004] Therefore, we need an automotive braking device capable of collecting braking dust to solve the problems that the existing automotive braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation, which can effectively reduce the pollution of the air by braking dust and extend the service life of the brake disc. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that the existing automotive braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation. The present application provides an automotive braking device capable of collecting braking dust, which can effectively reduce the pollution of the air by braking dust and extend the service life of the brake disc.

[0006] To achieve the above object, the present invention provides the following technical solution: An automotive braking device capable of collecting braking dust, comprising:

[0007] A hub, on which a brake disc is fixedly installed. Above the brake disc, there is a connecting frame, and the connecting frame is fixedly installed on an automotive steering gear. A brake pushing device is fixedly installed on the connecting frame, and the brake pushing device is used to push a brake pad to squeeze the brake disc to achieve a braking effect;

[0008] A filtering device. A pair of filtering devices are symmetrically arranged on the front and rear sides of the brake disc. The filtering device includes a side sealing housing sleeved on the outside of the brake disc and fixed to the connecting frame. The bottom of the side sealing housing is fixedly connected to a bottom sealing housing. A sealing cavity for sealing the brake disc is formed among the connecting frame, the side sealing housing and the bottom sealing housing. In the side sealing housing, collecting cavities for collecting brake dust generated during braking are correspondingly opened at the left and right ends corresponding to the brake disc, and an adsorption layer for adsorbing and storing the brake dust is arranged in the collecting cavities.

[0009] Further, the collecting cavity is divided into a filtering flow channel by a first partition and a second partition, and the adsorption layer is installed in the filtering flow channel. A second filtering cavity communicated with the end of the filtering flow channel is opened on the side sealing housing, and the head of the filtering flow channel is communicated with the collecting cavity. A filtering layer is fixedly installed in the second filtering cavity, and an exhaust filter screen communicated with the outside is fixedly installed on the second filtering cavity. A gas supply device is fixedly installed on the bottom sealing housing, and the gas supply device is used to send external air into the collecting cavity.

[0010] Further, the adsorption layer is filled with activated carbon or cotton fiber, and the filtering layer is a dust-proof cloth bag or filter cotton.

[0011] Further, the gas supply device includes a pump body fixedly installed on the bottom sealing housing. A central shaft is rotatably installed in the pump body. An impeller for pushing gas to flow is fixedly installed on the central shaft, and a driven wheel is coaxially installed on the central shaft. A driving wheel for driving the driven wheel to rotate is coaxially and fixedly installed on the hub.

[0012] Further, a first filtering cavity is arranged in the bottom sealing housing, and a filter is arranged in the first filtering cavity. The filter includes a clamping frame inserted and installed in the first filtering cavity, and a pre-filtering net for filtering air is fixedly installed on the clamping frame. The first filtering cavity is filled with filter cotton or a dust-removing cloth bag, and the first filtering cavity is communicated with the air inlet end of the pump body and is used to provide filtered air to the pump body.

[0013] Further, a first transmission wheel meshed with the driving wheel is rotatably installed in the bottom sealing housing, a second transmission wheel meshed with the first transmission wheel is rotatably installed in the bottom sealing housing, a third transmission wheel is coaxially installed on the second transmission wheel, the third transmission wheel is meshed with the driven wheel, and the transmission ratio between the driving wheel and the driven wheel is greater than 1.

[0014] Further, the hub includes a main spindle body, and the brake disc includes an annular disc fixedly installed on the main spindle body. The inside of the annular disc is separated by a middle partition into a second cooling cavity and a first cooling cavity for cooling the left and right sides of the middle partition respectively. The middle partition is provided with ventilation holes for communicating the first cooling cavity and the second cooling cavity. A ventilation cooling device for cooling the brake disc is arranged in the main spindle body. The ventilation cooling device includes a central tube rotatably installed coaxially with the main spindle body. A central flow channel for exhausting air is arranged in the central tube. A gas guiding cavity for communicating the central flow channel and the second cooling cavity is arranged in the main spindle body. A fan blade for driving external air into the first cooling cavity is fixedly installed on the main spindle body. A support piece for pushing the air in the first cooling cavity into the ventilation holes is fixedly installed in the central tube corresponding to the first cooling cavity. A flywheel for driving the central tube to rotate is fixedly installed in the support piece. An annular installation cavity for fixedly installing a one-way pushing device is arranged in the main spindle body, and the one-way pushing device is used for pushing the central tube to rotate in one direction.

[0015] Further, a lubricating oil storage cavity for storing lubricating oil is arranged on the central tube, and lubricating holes for injecting lubricating oil between the rotating surface of the central tube and the main spindle body are arranged in the lubricating oil storage cavity.

[0016] Further, an air inlet filter screen for isolating the inside of the first cooling cavity from external air and filtering the external air is arranged in the main spindle body. A scraping piece for scraping and removing dust on the outer side of the air inlet filter screen is fixedly installed on the central tube. A jet head for ejecting the gas in the central flow channel is fixedly installed at the end of the central tube.

[0017] Further, the one-way pushing device includes an annular installation frame fixedly installed in the annular installation cavity. At least two arc-shaped card slots are arranged in an annular array on the main spindle body. An outer arc-shaped piece clamped into the arc-shaped card slots is fixedly installed in the annular installation frame. One end of the outer arc-shaped piece is fixed to the annular installation frame through a third elastic piece. The other end of the outer arc-shaped piece is connected to an inner arc-shaped piece. The other end of the inner arc-shaped piece is respectively connected with a second elastic piece and a first elastic piece. The second elastic piece is arranged in parallel with the third elastic piece, and an obtuse angle connection is formed between the second elastic piece and the first elastic piece. The ends of the second elastic piece and the first elastic piece are respectively fixedly installed on the annular installation frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. An automotive braking device capable of collecting braking dust proposed by the present invention can effectively achieve complete sealing of the brake disc through a connecting frame, a side sealing housing, and a bottom sealing housing, and then utilize the adsorption layer and the filtering layer located in the collection chamber to adsorb and collect the braking dust;

[0020] 2. An automotive braking device capable of collecting braking dust proposed by the present invention can also utilize the gas provided by the air supply device to guide the movement direction of the braking dust, so that the braking dust can be better collected, and the air provided by the air supply device can also cool the surface of the brake disc, thereby effectively improving the cooling effect on the brake disc and further extending the service life of the brake disc. It solves the problems that the existing automotive braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation, and can effectively reduce the pollution of the air by the braking dust and extend the service life of the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a side view of the structure of the present invention;

[0023] Figure 3 is a schematic vertical sectional view of the structure of the present invention;

[0024] Figure 4 is a schematic horizontal sectional view of the structure of the present invention;

[0025] Figure 5 is a schematic structural diagram of the one-way pushing device in the present invention;

[0026] Figure 6 is a schematic structural diagram of the air exchange and cooling device in the present invention;

[0027] Figure 7 is a sectional view of the structure of the air exchange and cooling device in the present invention;

[0028] Figure 8 is a schematic installation diagram of the brake disc and the wheel hub in the present invention;

[0029] Figure 9 is a schematic structural diagram of the filtering device in the present invention;

[0030] Figure 10 is a sectional view of the structure of the air supply device in the present invention.

[0031] In the figure: 1, brake pad; 2, one-way pushing device; 201, first elastic piece; 202, inner arc piece; 203, second elastic piece; 204, outer arc piece; 205, third elastic piece; 206, annular mounting bracket; 3, ventilation and cooling device; 301, arc-shaped card slot; 302, lubricating hole; 303, fan blade; 304, scraping blade; 305, central pipe; 306, air jet head; 307, flywheel; 308, support piece; 309, central flow channel; 310, lubricating oil storage cavity; 4, air supply device; 401, central shaft; 402, pump body; 403, impeller; 404, driven wheel; 5, brake pushing device; 6, brake disc; 601, ventilation hole; 602, middle partition plate; 603, first cooling cavity; 604, second cooling cavity; 605, annular disc; 7, hub; 701, air guiding cavity; 702, main shaft body; 703, annular mounting cavity; 704, driving wheel; 8, filtering device; 801, collecting cavity; 802, second isolation piece; 803, side sealing housing; 804, first isolation piece; 805, adsorption layer; 806, filtering layer; 807, exhaust filter screen; 808, second filtering cavity; 809, filtering flow channel; 9, filter; 901, pre-filter screen; 902, clamping frame; 10, bottom sealing housing; 11, first filtering cavity; 12, first driving wheel; 13, second driving wheel; 14, third driving wheel; 15, intake filter screen; 16, connecting frame. Detailed implementation manners

[0032] In order to clearly and completely describe the objectives and technical solutions of the present invention and more clearly elaborate its advantages, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1:

[0034] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 10, the present invention provides an automotive braking device capable of collecting braking dust, including a wheel hub 7 and a filtering device 8. A brake disc 6 is fixedly installed on the wheel hub 7. Above the brake disc 6, there is a connecting frame 16, and the connecting frame 16 is fixedly installed on the vehicle steering gear. A braking push device 5 is fixedly installed on the connecting frame 16, and the braking push device 5 is used to push the brake pads 1 to press against the brake disc 6 to achieve a braking effect. The braking push device 5 is a hydraulic push rod or an electric push rod.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 , on the front and rear sides of the brake disc 6, a pair of filtering devices 8 are symmetrically arranged. The filtering device 8 includes a side sealing housing 803 sleeved on the outside of the brake disc 6 and fixed to the connecting frame 16. The bottom of the side sealing housing 803 is fixedly connected to a bottom sealing housing 10. A sealing cavity for sealing the brake disc 6 is formed between the connecting frame 16, the side sealing housing 803, and the bottom sealing housing 10. This sealing cavity formed by the connecting frame 16, the side sealing housing 803, and the bottom sealing housing 10 can isolate the brake disc 6 from the external air, so that the braking dust generated by the friction between the brake pads 1 and the brake disc 6 during braking can be retained in the sealing cavity and enter the collection cavity 801. In the side sealing housing 803, collection cavities 801 for collecting the braking dust generated during braking are correspondingly opened at the left and right ends corresponding to the brake disc 6. An adsorption layer 805 for adsorbing and storing the braking dust is arranged in the collection cavity 801. The braking dust can be adsorbed in the collection cavity 801 through the adsorption layer 805, thereby preventing the braking dust from entering the air or continuously rubbing against the brake disc 6 in the collection cavity 801 and causing damage.

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 10, in the collection chamber 801, a filter flow channel 809 is formed by separating with the first separator 804 and the second separator 802, and the adsorption layer 805 is installed in the filter flow channel 809. A second filter chamber 808 communicating with the end of the filter flow channel 809 is provided on the side sealing housing 803, and the head end of the filter flow channel 809 communicates with the collection chamber 801. A filter layer 806 is fixedly installed in the second filter chamber 808, and an exhaust filter screen 807 communicating with the outside is fixedly installed on the second filter chamber 808. A gas supply device 4 is fixedly installed on the bottom sealing housing 10, and the gas supply device 4 is used to send external air into the collection chamber 801. The adsorption layer 805 is filled with activated carbon or cotton fiber, and the filter layer 806 is a dust-proof cloth bag or filter cotton. Since the adsorption layer 805 is mainly used for adsorbing braking dust, common adsorption materials for filtering solid particles can be used as the filling in the adsorption layer 805. Similarly, the filter layer 806 is mainly used for separating braking dust from the air, so the filter layer 806 can also be made of common solid-gas separation materials. The gas supply device 4 can be a fan or a gas pump. Sending external air into the collection chamber 801 through the gas supply device 4 can air-cool the surface of the brake disc 6, thereby extending the service life of the brake disc 6. And the gas entering the collection chamber 801 will continue to enter the second filter chamber 808 along the filter flow channel 809 and finally be discharged through the exhaust filter screen 807. During the gas discharge process, the gas can also drive the braking dust located in the collection chamber 801 into the filter flow channel 809, so that the braking dust can be correctly adsorbed by the adsorption layer 805 and filtered by the filter layer 806, thus further avoiding the braking dust staying in the sealing chamber and the collection chamber 801 to continuously cause frictional damage to the brake disc 6.

[0037] An automotive braking device designed in this embodiment that can collect braking dust can effectively achieve complete sealing of the brake disc 6 through the connecting frame 16, the side sealing housing 803 and the bottom sealing housing 10, and then use the adsorption layer 805 and the filter layer 806 located in the collection chamber 801 to adsorb and collect the braking dust. At the same time, the gas provided by the gas supply device 4 can also be used to guide the movement direction of the braking dust, so that the braking dust can be better collected, and the air provided by the gas supply device 4 can also cool the surface of the brake disc 6, thus effectively improving the cooling effect on the brake disc 6 and further extending the service life of the brake disc 6. It solves the problems that the existing automotive braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation, and can effectively reduce the pollution of braking dust to the air and extend the service life of the brake disc.

[0038] Embodiment Two:

[0039] Please refer to Figure 1 、 Figure 2 、Figure 3 and Figure 9 , on the basis of Embodiment 1, the air supply device 4 includes a pump body 402 fixedly installed on the bottom sealing housing 10, and a central shaft 401 is rotatably installed in the pump body 402. An impeller 403 for promoting gas flow is fixedly installed on the central shaft 401, and a driven wheel 404 is coaxially installed on the central shaft 401. A driving wheel 704 for driving the driven wheel 404 to rotate is coaxially and fixedly installed on the hub 7. A first filter chamber 11 is arranged in the bottom sealing housing 10, and a filter 9 is arranged in the first filter chamber 11. The filter 9 includes a clamping frame 902 inserted and installed in the first filter chamber 11, and a pre-filter screen 901 for filtering air is fixedly installed on the clamping frame 902. The first filter chamber 11 is filled with filter cotton or dust removal cloth bags, and the first filter chamber 11 is communicated with the air inlet end of the pump body 402 and is used to provide filtered air to the pump body 402. A first transmission wheel 12 meshed with the driving wheel 704 is rotatably installed in the bottom sealing housing 10, a second transmission wheel 13 meshed with the first transmission wheel 12 is rotatably installed in the bottom sealing housing 10, and a third transmission wheel 14 is coaxially installed on the second transmission wheel 13. The third transmission wheel 14 is meshed with the driven wheel 404, and the transmission ratio between the driving wheel 704 and the driven wheel 404 is greater than 1. A speed increasing transmission mechanism is formed among the driving wheel 704, the first transmission wheel 12, the second transmission wheel 13, the third transmission wheel 14 and the driven wheel 404, which can effectively utilize the rotation of the hub 7 to drive the central shaft 401 to rotate, and then use the central shaft 401 to drive the impeller 403 to rotate. External air will be sucked into the first filter chamber 11 under the suction provided by the impeller 403 and filtered by the filter 9. Subsequently, the gas in the first filter chamber 11 will be sucked into the pump body 402 and then sent into the collection chamber 801. In this way, the rotation power of the hub 7 itself can be used to drive the air supply device 4 to work, so that no additional power needs to be provided for the air supply device 4, thus facilitating the use. Further, the first transmission wheel 12 can use a ratchet. Through the one-way transmission function of the ratchet, the vehicle can transmit power to the central shaft 401 through the hub 7 only when moving forward, and when the vehicle reverses, the hub 7 cannot drive the central shaft 401 to rotate through the first transmission wheel 12, so that it can effectively avoid the air flow from being sucked into the collection chamber 801 from the exhaust filter screen 807 in the reverse direction during reverse driving, further solving the problems that the existing vehicle braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation, and can effectively reduce the pollution of the air by braking dust and extend the service life of the brake disc.

[0040] Embodiment 3:

[0041] Please refer to 1, Figure 2 , Figure 3 , Figure 4 ,Figure 5 , Figure 6 , Figure 7 and Figure 8, on the basis of the second embodiment, the hub 7 includes a main spindle body 702, and the brake disc 6 includes an annular disc 605 fixedly installed with the main spindle body 702. The interior of the annular disc 605 is separated by a middle partition 602 into a second cooling cavity 604 and a first cooling cavity 603 for cooling the left and right sides of the middle partition 602 respectively. The middle partition 602 is provided with a vent hole 601 for communicating the first cooling cavity 603 and the second cooling cavity 604. A ventilation and cooling device 3 for cooling the brake disc 6 is provided in the main spindle body 702. The ventilation and cooling device 3 includes a central tube 305 rotatably installed coaxially with the main spindle body 702. A central flow channel 309 for exhausting gas is provided in the central tube 305. A gas guiding cavity 701 for communicating the central flow channel 309 and the second cooling cavity 604 is provided in the main spindle body 702. A fan blade 303 for driving external air into the first cooling cavity 603 is fixedly installed on the main spindle body 702. A support piece 308 for pushing the air in the first cooling cavity 603 into the vent hole 601 is fixedly installed in the central tube 305 corresponding to the first cooling cavity 603. A flywheel 307 for driving the central tube 305 to rotate is fixedly installed in the support piece 308. An annular installation cavity 703 for fixedly installing a one-way pushing device 2 is provided in the main spindle body 702. The one-way pushing device 2 is used to push the central tube 305 to rotate in one direction. The one-way pushing device 2 includes an annular installation frame 206 fixedly installed in the annular installation cavity 703. At least two arc-shaped card slots 301 are arranged in an annular array on the main spindle body 702. An outer arc-shaped piece 204 that is snapped into the arc-shaped card slots 301 is fixedly installed in the annular installation frame 206. One end of the outer arc-shaped piece 204 is fixed to the annular installation frame 206 through a third elastic piece 205. The other end of the outer arc-shaped piece 204 is connected to an inner arc-shaped piece 202. The other end of the inner arc-shaped piece 202 is respectively connected to a second elastic piece 203 and a first elastic piece 201. The second elastic piece 203 is arranged parallel to the third elastic piece 205. The second elastic piece 203 and the first elastic piece 201 are connected at an obtuse angle. The ends of the second elastic piece 203 and the first elastic piece 201 are respectively fixedly installed on the annular installation frame 206.The special structural design of the one-way driving device 2 makes the force-bearing performance of the two ends of the outer arc-shaped piece 204 different. Specifically, when the vehicle accelerates forward, the rotational speed of the main shaft body 702 will be higher than that of the central tube 305 at this time. Due to the inertial effect, the edge of the circular arc slot 301 begins to squeeze the side of the outer arc-shaped piece 204 close to the inner arc-shaped piece 202 under the drive of the central tube 305. At this time, the central tube 305 will be in an accelerating state. Since the outer arc-shaped piece 204 wants to deform and break away from the circular arc slot 301 at this time, it needs to overcome the direct driving force provided by the ends of the second elastic piece 203 and the third elastic piece 205, and then cause the inner arc-shaped piece 202 to deform outward. Therefore, the deformation resistance to be overcome is relatively large. At this time, most of the resistance required to overcome during the deformation process of the outer arc-shaped piece 204 will be converted into the power to drive the rotation of the central tube 305 until the central tube 305 rotates synchronously with the main shaft body 702. When the vehicle brakes, the rotational speed of the main shaft body 702 will gradually decrease and be less than the rotational speed of the central tube 305 under the drive of the brake pad 1. At this time, under the action of inertia, the edge of the circular arc slot 301 will squeeze one end of the outer arc-shaped piece 204 close to the third elastic piece 205. At this time, the central tube 305 will be in a decelerating state. Since the outer arc-shaped piece 204 only needs to make the inner arc-shaped piece 202 deform inward and overcome the lateral force provided by the third elastic piece 205 to deform and break away from the circular arc slot 301 at this time, the resistance received by the outer arc-shaped piece 204 at this time is significantly lower than the resistance required by the outer arc-shaped piece 204 when the central tube 305 enters the accelerating state. Therefore, although the central tube 305 will still be decelerated under the action of the one-way driving device 2, the deceleration time required is much longer than the time required for the central tube 305 to reach synchronous rotation with the main shaft body 702 in the accelerating state. Therefore, when the vehicle brakes, the central tube 305 can maintain rotation for a long time. At the same time, due to the energy storage of the flywheel 307, the rotation time will be further extended.The working mode of the ventilation and cooling device 3 will be described in detail for different driving states of the vehicle. First, during the process of the vehicle accelerating forward, since the rotational speed of the main shaft body 702 is higher than that of the central tube 305, the central tube 305 will quickly reach the state of rotating synchronously with the main shaft body 702 under the push of the one-way pushing device 2. During this process, due to the rotation of the central tube 305, the external air flow will be sent into the first cooling chamber 603 by the fan blade 303. Subsequently, the air flow will enter the second cooling chamber 604 through the ventilation holes 601 driven by the support piece 308. The air flow located in the first cooling chamber 603 and the second cooling chamber 604 will cool the brake disc 6, so that the temperature of the brake disc 6 can drop rapidly. Subsequently, the air flow located in the second cooling chamber 604 will enter the central flow channel 309 through the air guiding chamber 701 and will finally be ejected by the jet head 306. When the vehicle is in a constant-speed forward state, since the main shaft body 702 rotates synchronously with the central tube 305, unnecessary friction between the ventilation and cooling device 3 and the main shaft body 702 is avoided, thereby prolonging the service life of the ventilation and cooling device 3. When the vehicle decelerates forward due to braking, the central tube 305 will continue to rotate and gradually reduce its rotational speed driven by the flywheel 307. At this time, the gas will continue to cool the brake disc 6 driven by the ventilation and cooling device 3. In this way, it is ensured that the ventilation and cooling device 3 can still be used to effectively brake the brake disc 6 for a period of time after the vehicle stops braking, thereby prolonging the service life of the brake disc 6. When the vehicle is reversing, since the reversing speed and acceleration of the vehicle are generally small, the central tube 305 will only rotate in the opposite direction relative to when the vehicle is moving forward at a small speed driven by the main shaft body 702. At this time, the external air may be driven by the fan blade 303 to enter the air guiding chamber 701, the second cooling chamber 604 and the first cooling chamber 603 in the reverse direction from the central flow channel 309. Therefore, a corresponding filter screen can be set in the central flow channel 309 or a one-way valve that restricts the air flow to only be discharged from the central flow channel 309 according to needs to isolate external dust, thereby ensuring that the brake disc 6 can be efficiently cooled by the ventilation and cooling device 3. It further solves the problems that the existing vehicle braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation, and can effectively reduce the pollution of the braking dust to the air and prolong the service life of the brake disc.

[0042] Embodiment 4:

[0043] Please refer to Figure 3 、 Figure 4 、 Figure 6 and Figure 7, on the basis of Embodiment 3, a lubricating oil storage cavity 310 for storing lubricating oil is provided on the central tube 305, and a lubricating hole 302 for injecting lubricating oil between the rotating surface of the central tube 305 and the main shaft body 702 is formed in the lubricating oil storage cavity 310. Lubricating oil can be injected into the lubricating oil storage cavity 310 in advance. When the central tube 305 rotates, the lubricating oil in the lubricating oil storage cavity 310 will be thrown out from the lubricating hole 302 under the action of centrifugal force, so as to enter the rotating surface gap between the central tube 305 and the main shaft body 702 for lubrication. In this way, a good lubrication effect can be ensured between the main shaft body 702 and the central tube 305. And because the lubricating oil storage cavity 310 can store a large amount of lubricating oil at one time and realize continuous lubrication during subsequent operations, the frequency of manual lubrication maintenance can be effectively reduced, and only the lubricating oil needs to be provided to the lubricating oil storage cavity 310 regularly. Further solve the problems that the existing automotive braking system lacks the function of collecting braking dust and the brake disc lacks the function of active heat dissipation, and can effectively reduce the pollution of the air by braking dust and extend the service life of the brake disc.

[0044] Embodiment 5:

[0045] Please refer to Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8, on the basis of Embodiment 4, an intake air filter screen 15 for isolating the interior of the first cooling chamber 603 from the external air and filtering the external air is provided inside the main shaft body 702. A scraping blade 304 for scraping and removing dust from the outer side of the intake air filter screen 15 is fixedly installed on the central pipe 305. A jet head 306 for ejecting the gas located in the central flow channel 309 is fixedly installed at the end of the central pipe 305. The jet head 306 is used to provide a higher gas ejection speed by means of a smaller gas flow cross-sectional area, so that the gas ejected by the jet head 306 can move to a position farther from the wheel hub 7. In this way, the high-temperature gas after heat exchange is prevented from being re-sucked into the first cooling chamber 603, thereby further improving the cooling efficiency. The intake air filter screen 15 enables the external air to enter the first cooling chamber 603 after being filtered by the intake air filter screen 15 to remove dust, thus preventing the interiors of the first cooling chamber 603, the second cooling chamber 604, the air guide chamber 701, and the central flow channel 309 from being contaminated and covered by dust. In this way, blockage can be avoided and the heat conduction efficiency of the first cooling chamber 603 and the second cooling chamber 604 can be maintained. Moreover, during the rotation of the central pipe 305, the outer side of the intake air filter screen 15 can be scraped by the scraping blade 304, thereby removing the dust adhering to the surface of the intake air filter screen 15 and preventing the mesh holes of the intake air filter screen 15 from being blocked by dust, ensuring the filtering efficiency of the intake air filter screen 15. Further, the problems that the existing automotive braking system lacks a braking dust collection function and the brake disc lacks an active heat dissipation function are solved, and the pollution of the air by the braking dust can be effectively reduced and the service life of the brake disc can be prolonged.

[0046] Embodiment 6:

[0047] On the basis of Embodiment 5, the present invention further provides a usage method of an automotive braking device capable of collecting braking dust, including the following steps:

[0048] Step 1: When the vehicle is moving forward, the wheel hub 7 will gradually drive the air exchange and cooling device 3 to a state of synchronous rotation with the wheel hub 7 through the one-way pushing device 2, so as to use the air exchange and cooling device 3 to send the external air into the interior of the brake disc 6 to cool the brake disc 6. At the same time, the wheel hub 7 will also drive the air supply device 4 to continuously supply air into the collection chamber 801 through the driving wheel 704, so that the outer side of the brake disc 6 can be cooled by the air from the collection chamber 801;

[0049] Step 2: When the vehicle brakes during forward movement, the braking push device 5 will push the brake pads 1 to clamp the brake disc 6, thereby reducing the rotational speed of the brake disc 6 by using friction to decelerate the vehicle. The braking dust generated by the friction between the brake pads 1 and the brake disc 6 will be driven by the gas sent into the collection chamber 801 by the air supply device 4, so that the braking dust is sent into the filter flow channel 809 under the drive of the gas, and then filtered by the adsorption layer 805 and then by the filter layer 806. Subsequently, the gas continues to be discharged from the exhaust filter screen 807, while the braking dust remains in the adsorption layer 805 and the second filter chamber 808. At the same time, the ventilation and cooling device 3 will continue to rotate driven by the flywheel 307, so as to continuously supply air to the inside of the brake disc 6 for cooling;

[0050] Step 3: During regular maintenance, lubricating oil can be injected into the lubricating oil storage chamber 310 to reduce the friction between the ventilation and cooling device 3 and the main shaft body 702. At the same time, the filter device 8 can be temporarily removed to replace the adsorption layer 805 and the filter layer 806, so as to remove the braking dust collected by the filter device 8.

[0051] Although the above describes the illustrative specific embodiments of the present application for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all application creations using the concept of the present application are within the scope of protection.

Claims

1. An automotive braking device capable of collecting braking dust, characterized in that, Comprising: A wheel hub (7), a brake disc (6) is provided on the wheel hub (7), a connecting frame (16) is provided above the brake disc (6), and the connecting frame (16) is fixedly installed on an automotive steering gear. A brake pushing device (5) is provided on the connecting frame (16), and the brake pushing device (5) is used to push a brake pad (1) to squeeze the brake disc (6) to achieve braking; A pair of filtering devices (8) are symmetrically arranged on the front and rear sides of the brake disc (6). The filtering device (8) includes a side sealing housing (803) sleeved on the outer side of the brake disc (6) and fixed to the connecting frame (16). A bottom sealing housing (10) is provided at the bottom of the side sealing housing (803). A sealing cavity for sealing the brake disc (6) is formed between the connecting frame (16), the side sealing housing (803) and the bottom sealing housing (10). Collection cavities (801) are correspondingly formed at the left and right ends of the side sealing housing (803) corresponding to the brake disc (6), and an adsorption layer (805) is provided in the collection cavity (801).

2. The vehicle braking device capable of collecting braking dust according to claim 1, characterized in that: The collection cavity (801) is separated by a first separator (804) and a second separator (802) to form a filtering flow channel (809). The adsorption layer (805) is arranged in the filtering flow channel (809). A second filtering cavity (808) communicating with the end of the filtering flow channel (809) is formed on the side sealing housing (803). The head of the filtering flow channel (809) communicates with the collection cavity (801). A filtering layer (806) is provided in the second filtering cavity (808), and an exhaust filter screen (807) communicating with the outside is provided on the second filtering cavity (808). An air supply device (4) is provided on the bottom sealing housing (10), and the air supply device (4) is used to send external air into the collection cavity (801).

3. The automotive braking device capable of collecting braking dust according to claim 2, wherein: The adsorption layer (805) is filled with activated carbon or cotton fiber, and the filtering layer (806) is a dust-proof cloth bag or filter cotton.

4. The vehicle braking device capable of collecting braking dust according to claim 2, wherein: The air supply device (4) includes a pump body (402) provided on the bottom sealing housing (10). A central shaft (401) is rotatably installed in the pump body (402). An impeller (403) for pushing gas to flow is provided on the central shaft (401). A driven wheel (404) is coaxially installed on the central shaft (401). A driving wheel (704) for driving the driven wheel (404) to rotate is coaxially arranged on the wheel hub (7).

5. The vehicle braking device capable of collecting braking dust according to claim 4, characterized in that: A first filtering cavity (11) is provided in the bottom sealing housing (10), and a filter (9) is provided in the first filtering cavity (11). The filter (9) includes a clamping frame (902) inserted and installed in the first filtering cavity (11). A pre-filtering net (901) for filtering air is fixedly installed on the clamping frame (902). The first filtering cavity (11) is filled with filter cotton or a dust removal cloth bag, and the first filtering cavity (11) communicates with the air inlet end of the pump body (402) and is used to provide filtered air to the pump body (402).

6. The automotive braking device capable of collecting braking dust according to claim 4, wherein: A first transmission wheel (12) meshed with a driving wheel (704) is rotatably installed inside the bottom sealed housing (10). A second transmission wheel (13) meshed with the first transmission wheel (12) is rotatably installed inside the bottom sealed housing (10). A third transmission wheel (14) is coaxially installed on the second transmission wheel (13). The third transmission wheel (14) is meshed with a driven wheel (404). The transmission ratio between the driving wheel (704) and the driven wheel (404) is greater than 1.

7. The automotive braking device capable of collecting braking dust according to claim 1, characterized in that: The wheel hub (7) includes a main shaft body (702). The brake disc (6) includes an annular disc (605) fixedly installed on the main shaft body (702). The inside of the annular disc (605) is separated by a middle partition plate (602) into a second cooling cavity (604) and a first cooling cavity (603) for cooling the left and right sides of the middle partition plate (602) respectively. An air vent hole (601) for communicating the first cooling cavity (603) and the second cooling cavity (604) is provided on the middle partition plate (602). A ventilation and cooling device (3) for cooling the brake disc (6) is provided inside the main shaft body (702). The ventilation and cooling device (3) includes a central tube (305) rotatably installed coaxially with the main shaft body (702). A central flow channel (309) for exhausting air is provided inside the central tube (305). An air guide cavity (701) for communicating the central flow channel (309) and the second cooling cavity (604) is provided inside the main shaft body (702). A fan blade (303) for driving external air into the first cooling cavity (603) is provided on the main shaft body (702). A support piece (308) for pushing the air in the first cooling cavity (603) into the air vent hole (601) is provided in the central tube (305) corresponding to the first cooling cavity (603). A flywheel (307) for driving the central tube (305) to rotate is provided inside the support piece (308). An annular installation cavity (703) for fixedly installing a one-way pushing device (2) is provided inside the main shaft body (702). The one-way pushing device (2) is used for pushing the central tube (305) to rotate in one direction.

8. The vehicle braking device capable of collecting braking dust according to claim 7, characterized in that: A lubricating oil storage cavity (310) is provided on the central tube (305). A lubricating hole (302) for injecting lubricating oil between the rotating surface of the central tube (305) and the main shaft body (702) is provided inside the lubricating oil storage cavity (310).

9. The automotive braking device capable of collecting braking dust according to claim 7, wherein: An air intake filter net (15) for isolating the inside of the first cooling cavity (603) from external air and filtering the external air is provided inside the main shaft body (702). A scraping piece (304) for scraping and removing dust on the outer side of the air intake filter net (15) is provided on the central tube (305). A jet head (306) for ejecting the gas in the central flow channel (309) is provided at the end of the central tube (305).

10. The vehicle braking device capable of collecting braking dust according to claim 7, characterized in that: The one-way pushing device (2) includes an annular mounting frame (206) fixedly installed in the annular mounting cavity (703). At least two arc-shaped card slots (301) are arranged in an annular array on the main shaft body (702). An outer arc-shaped piece (204) that is snapped into the arc-shaped card slot (301) is arranged in the annular mounting frame (206). One end of the outer arc-shaped piece (204) is fixed to the annular mounting frame (206) through a third elastic piece (205). The other end of the outer arc-shaped piece (204) is connected to an inner arc-shaped piece (202). The other end of the inner arc-shaped piece (202) is respectively connected with a second elastic piece (203) and a first elastic piece (201). The second elastic piece (203) is arranged in parallel with the third elastic piece (205). The included angle between the second elastic piece (203) and the first elastic piece (201) is an obtuse angle. The ends of the second elastic piece (203) and the first elastic piece (201) are respectively fixedly connected to the annular mounting frame (206).

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