Braking abrasion particulate matter discharging and collecting device

Abstract

The invention relates to the technical field of motor vehicle non-tail gas particulate matter emission testing, and discloses a brake abrasion particulate matter emission collecting device which is provided with an absorption cover, a brake assembly, a collecting pipe and a draught fan, the brake assembly is connected to a hub, the absorption cover covers the brake assembly, the collecting pipe is connected to one side of the wheel center of the hub, and the draught fan is arranged on the collecting pipe. The draught fan and the collecting pipe are oppositely arranged and connected to the other side of the wheel center, the absorption cover is provided with a first space, and at least part of the braking assembly is contained in the first space. When an automobile is braked, the brake disc rotates anticlockwise, the brake calipers abut against the brake disc, the brake pad and the brake disc rub to generate abrasion particles, and due to inertia, the particles continue to do circumferential motion along the brake pad and finally escape from the tail end of the brake pad to enter the first space. The draught fan and the brake calipers receive signals synchronously, air is started, air flow blowing the outer side of the wheel center is generated, particulate matter in the absorption cover can be gathered in the collecting pipe, gathering of the particulate matter in the absorption cover is avoided, and the collecting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of non-exhaust particulate matter emission testing for motor vehicles, and in particular to a brake wear particulate matter emission collection device. Background Art

[0002] Due to the continuous advancement of science and technology and people's urgent need for environmental protection, the field of new energy and new materials continues to develop. Correspondingly, new energy vehicles will gradually replace traditional fuel vehicles and become the mainstream of motor vehicles. As a result, people's attention to motor vehicle pollutant emissions has gradually shifted from tail gas emissions to non-tail gas emissions. According to data from the German Environment Agency, about 85% of road traffic particulate emissions come from non-tail gas particulate emissions. Among them, particulate emissions caused by brake wear are the main source of emissions.

[0003] Most of the existing brake wear emission collection devices are trumpet-shaped, and are directly aimed at the entire wheel hub on the outside of the vehicle for collection. Although the largest possible collection area is guaranteed, the blocking of the airflow of the exhaust particles by the spokes easily leads to new problems such as blocked airflow and insufficient collection. Therefore, there is an urgent need for a brake wear particle emission collection device that can more efficiently collect non-exhaust emission particles and reduce their pollution to the atmosphere. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a brake wear particle emission collection device, which has no impact on the braking process and can efficiently collect non-exhaust emission particles to reduce the degree of pollution to the atmosphere.

[0005] The present invention provides a brake wear particle emission collection device, comprising: a brake assembly, wherein the brake assembly comprises a brake disc, a brake caliper and a brake pad, wherein the brake disc is connected to a wheel hub, wherein the brake caliper can selectively abut against or separate from the brake disc, wherein the brake pad is arranged on a surface of a side where the brake caliper abuts against the brake disc, wherein the brake pad extends along the circumference of the wheel hub, and an end located upstream of the brake disc in a rotation direction is a rear end of the brake pad; An absorption component, the absorption component comprising an absorption cover and a collection pipe, the absorption cover is connected to a wheel center side of the hub through the collection pipe, a cover wall of the absorption cover is surrounded by a first space, the tail end of the brake pad is accommodated in the first space, and the first space is communicated with the collection pipe; A fan is arranged opposite to the collecting pipe and connected to the other side of the wheel center. The fan is configured to be turned on when the brake caliper abuts against the brake disc.

[0006] According to the technical solution provided in the embodiment of the present application, the cover wall of the absorption cover includes: A first end face and a second end face, wherein the first end face and the second end face are spaced apart and both form an angle with the width direction of the hub; A third end face and a fourth end face, wherein the third end face and the fourth end face are arranged at intervals along the width direction, and the first end face, the third end face, the second end face and the fourth end face are sequentially connected end to end; a fifth end face, the fifth end face being connected to the first end face, the second end face, the third end face, and the fourth end face; The first end surface, the second end surface, the third end surface, the fourth end surface and the fifth end surface surround a first space.

[0007] According to the technical solution provided in the embodiment of the present application, the projection of the third end surface along the width direction of the wheel hub is a first projection area, and the brake caliper is completely placed in the first projection area; The projection of the fourth end face along the width direction of the wheel hub is a second projection area, the brake caliper is at least partially placed in the second projection area, and the volume of the brake caliper placed in the second projection area is greater than one third of the volume of the brake caliper and less than one half of the volume of the brake caliper.

[0008] According to the technical solution provided in the embodiment of the present application, the extended surfaces of the first end surface and the second end surface form an angle α, and 120°<angle α<180°.

[0009] According to the technical solution provided in the embodiment of the present application, the projection of the third end surface along the width direction of the wheel hub is a first projection area, and the brake caliper is completely placed in the first projection area; The projection of the fourth end face along the width direction of the wheel hub is a second projection area, the brake caliper is at least partially placed in the second projection area, and the volume of the brake caliper placed in the second projection area is greater than one third of the volume of the brake caliper and less than one half of the volume of the brake caliper.

[0010] According to the technical solution provided in the embodiment of the present application, a bending portion is provided on a side of the third end face away from the fifth end face, and the bending portion extends in a direction close to the brake caliper.

[0011] According to the technical solution provided in the embodiment of the present application, the first end surface and the second end surface of the absorption cover are both provided with avoidance grooves so that the brake disc can be partially accommodated in the first space.

[0012] According to the technical solution provided in the embodiment of the present application, both the first end face and the second end face are perpendicular to the width direction of the hub.

[0013] According to the technical solution provided in the embodiment of the present application, the brake wear particle emission collection device also includes a controller, and the controller is electrically connected to the brake caliper and the fan.

[0014] According to the technical solution provided in the embodiment of the present application, the collection tube can be externally connected to a particle collection, detection and purification device.

[0015] According to the technical solution provided in the embodiment of the present application, the absorption cover is made of elastic material.

[0016] Compared with the prior art, the present application has the following beneficial effects: the brake assembly of the brake wear particle emission collection device of the present application comprises a brake disc, a brake caliper and a brake pad, the brake disc is connected to the wheel hub, the brake caliper can selectively abut or separate from the brake disc, the brake pad is arranged on the surface of the brake caliper abutting against the brake disc, the brake pad extends along the circumference of the wheel hub, and the end located upstream of the brake disc in the rotation direction is the rear end of the brake pad; An absorption component, the absorption component comprising an absorption cover and a collection pipe, the absorption cover is connected to a wheel center side of the wheel hub through the collection pipe, a cover wall of the absorption cover is surrounded by a first space, the tail end of the brake pad is accommodated in the first space, and the first space is communicated with the collection pipe; A fan is arranged opposite to the collecting pipe and connected to the other side of the wheel center. The fan is configured to be turned on when the brake caliper abuts against the brake disc.

[0017] When the car brakes, the car wheel hub rotates, driving the brake disc to rotate counterclockwise, and the brake caliper abuts the brake disc. At this time, the brake caliper and brake pad are relatively still, and the friction between the brake pad and the brake disc produces brake wear particles. Due to inertia, the particles generated by the brake pad tend to continue to move circumferentially along the brake pad, and finally escape into the first space at the tail end of the brake pad. At the same time, the fan and the brake caliper receive signals synchronously, and the wind is turned on to generate an airflow that blows the outside of the wheel center. Since the pressure is smaller where the air flow rate is large, the particles in the absorption cover will be gathered as much as possible in the collection tube connected to the wheel center, avoiding the accumulation of particles in the absorption cover and further improving the collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic structural diagram of a brake wear particle emission and collection device provided in an embodiment of the present invention; Figure 2 is a schematic diagram of the outer angle structure of the hub provided by an embodiment of the present invention; Figure 3 It is a cross-sectional view of the collection cover structure provided by an embodiment of the present invention.

[0020] 100, wheel hub; 110, wheel center; 1. Brake assembly; 11. Brake disc; 12. Brake caliper; 13. Brake pad; 2. Absorption assembly; 21. Absorption cover; 211. First end surface; 212. Second end surface; 213. Third end surface; 214. Fourth end surface; 215. Fifth end surface; 216. First space; 22. Collection tube; 3. Fan. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] It should be noted that the terms used in the present invention are only for describing specific embodiments, rather than limiting the scope of the present application. As shown in the present specification, unless the context clearly indicates an exception, the words "one", "a", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of more restrictions, the elements defined by the sentence "include one..." do not exclude the presence of other identical elements in the process, method or device including the elements.

[0023] Due to the continuous advancement of science and technology and people's urgent need for environmental protection, the field of new energy and new materials continues to develop. Correspondingly, new energy vehicles will gradually replace traditional fuel vehicles and become the mainstream of motor vehicles. As a result, people's attention to motor vehicle pollutant emissions has gradually shifted from tail gas emissions to non-tail gas emissions. According to data from the German Environment Agency, about 85% of road traffic particulate emissions come from non-tail gas particulate emissions. Among them, particulate emissions caused by brake wear are the main source of emissions.

[0024] Most of the existing brake wear emission collection devices are trumpet-shaped, and are directly aimed at the entire wheel hub on the outside of the vehicle for collection. Although the largest possible collection area is guaranteed, the blocking of the airflow of the exhaust particles by the spokes easily leads to new problems such as blocked airflow and insufficient collection. Therefore, there is an urgent need for a brake wear particle emission collection device that can more efficiently collect non-exhaust emission particles and reduce their pollution to the atmosphere.

[0025] like Figure 1-3 As shown, this embodiment provides a brake wear particle emission collection device, including an absorption component 1, a brake component 2 and a fan 3, wherein the brake component 1 includes a brake disc 11, a brake caliper 12 and a brake pad 13, the brake disc 11 is connected to the wheel hub 100, the brake caliper 12 can selectively abut or separate from the brake disc 11, the brake pad 13 is arranged on the surface of the brake caliper 12 and the brake disc 11 abutting side, the brake pad 13 extends along the circumference of the wheel hub 100, and the end of the brake disc 11 located upstream of the rotation direction is the brake pad. 13; the absorption component 2 includes an absorption cover 21 and a collecting pipe 22, the absorption cover 21 is connected to one side of the wheel center 110 of the wheel hub 100 through the collecting pipe 22, the cover wall of the absorption cover 21 is surrounded by a first space 216, the tail end of the brake pad 13 is accommodated in the first space 216, and the first space 216 is communicated with the collecting pipe 22; the fan 3 is arranged opposite to the collecting pipe 22, connected to the other side of the wheel center 110, and the fan 3 is configured to be turned on when the brake caliper 12 abuts against the brake disc 11.

[0026] When the car brakes, the car wheel hub 100 rotates, driving the brake disc 11 to rotate counterclockwise, and the brake caliper 12 abuts against the brake disc 11. At this time, the brake caliper 12 and the brake pad 13 are relatively still, and the brake pad 13 and the brake disc 11 rub against each other to produce brake wear particles. Due to inertia, the particles produced by the brake pad 13 tend to continue to move circumferentially along the brake pad 13, and finally escape into the first space 216 at the tail end of the brake pad 13.

[0027] The brake wear particle emission collection device provided in this embodiment also includes a controller, which is electrically connected to the fan 3 and the brake caliper 12 to control the coordinated work of the fan 3 and the brake caliper 12. In other embodiments, the fan 3 and the brake caliper 12 can also be connected by rigid connection, elastic connection, etc., as long as they can achieve the purpose of coordinated work, and no excessive restrictions are made here. When the car brakes, the fan 3 and the brake caliper 12 receive signals synchronously, and the fan 3 is turned on to generate an airflow blowing to the outside of the wheel center 110. Since the pressure is smaller where the air flow rate is large, the particles in the absorption cover 21 will be gathered into the collection pipe 22 connected to the wheel center 100 as much as possible, avoiding the accumulation of particles in the absorption cover 21 and improving the collection efficiency.

[0028] The cover wall of the absorption cover 21 has five end faces, specifically including a first end face 211 and a second end face 212 arranged at intervals, the first end face 211 and the second end face 212 are both arranged at an angle with the width direction of the hub 100, in this embodiment, the first end face 211 and the second end face 212 are both perpendicular to the width direction of the hub 100; it also includes a third end face 213 and a fourth end face 214 arranged at intervals along the width direction, the first end face 211, the third end face 213, the second end face 212 and the fourth end face 214 are connected end to end in sequence; it also includes a fifth end face 215, the fifth end face 215 is connected to the first end face 211, the second end face 212, the third end face 213, and the fourth end face 214, finally forming a cover-like structure with an open side, the first end face 211, the second end face 212, the third end face 213, the fourth end face 214 and the fifth end face 215 enclose the first space 216.

[0029] In order to ensure the collection efficiency of the collection device as much as possible while minimizing the impact on the braking process, the present embodiment provides a preferred solution for the size of the absorption cover 21: the first end face 211 and the second end face 212 are set at an angle α, 120°<angle α<180°; the projection of the third end face 213 along the width direction of the wheel hub 100 is a first projection area, and the brake caliper 12 is completely placed in the first projection area; the projection of the fourth end face 214 along the width direction of the wheel hub 100 is a second projection area, and the brake caliper 12 is at least partially placed in the second projection area, and the volume of the brake caliper 12 placed in the second projection area is greater than one third of the volume of the brake caliper 12 and less than one half of the volume of the brake caliper 12.

[0030] Furthermore, the first end surface 211 and the second end surface 212 of the absorption cover 21 are both provided with avoidance grooves, so that the brake disc 11 can be partially accommodated in the first space 216. The third end surface 213 is provided with a bending portion on a side away from the fifth end surface 215, and the bending portion extends toward the direction close to the brake caliper 12 to prevent the particles in the first space 216 from escaping. In the brake wear particle emission collection device provided in this embodiment, the absorption cover 21 is made of elastic material, which can better fit the shape of the brake caliper 12 and the brake pad 13.

[0031] In the brake wear particulate matter emission collection device provided in this embodiment, the collection pipe 22 can be connected to a particulate matter collection, detection and purification device, including but not limited to a particulate matter collection container, a particulate matter composition real-time monitoring device, a particulate matter purification device, etc. The particulate matter in the collection pipe is properly handled to prevent it from being re-diffused into the air.

[0032] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A brake wear particle emission collection device, characterized in that: include: A brake assembly (1), the brake assembly (1) comprising a brake disc (11), a brake caliper (12) and a brake pad (13), the brake disc (11) being connected to a wheel hub (100), the brake caliper (12) being capable of selectively abutting against or separating from the brake disc (11), the brake pad (13) being arranged on a surface of a side where the brake caliper (12) abuts against the brake disc (11), the brake pad (13) extending along the circumference of the wheel hub (100), and an end located upstream in a rotation direction of the brake disc (11) being a tail end of the brake pad (13); An absorption component (2), the absorption component (2) comprising an absorption cover (21) and a collection pipe (22), the absorption cover (21) being connected to a side of a wheel center (110) of the wheel hub (100) via the collection pipe (22), a cover wall of the absorption cover (21) being provided with a first space (216), the rear end of the brake pad (13) being accommodated in the first space (216), and the first space (216) being in communication with the collection pipe (22); A fan (3), the fan (3) being arranged opposite to the collecting pipe (22) and connected to the other side of the wheel center (110), the fan (3) being configured such that when the brake caliper (12) abuts against the brake disc (11), the fan (3) is turned on.

2. The brake wear particle emission collection device according to claim 1, characterized in that: The cover wall of the absorption cover (21) comprises: A first end surface (211) and a second end surface (212), wherein the first end surface (211) and the second end surface (212) are arranged at an interval and both form an angle with the width direction of the hub (100); a third end face (213) and a fourth end face (214), wherein the third end face (213) and the fourth end face (214) are arranged at intervals along the width direction of the hub (100), and the first end face (211), the third end face (213), the second end face (212) and the fourth end face (214) are sequentially connected end to end; a fifth end surface (215), the fifth end surface (215) being connected to the first end surface (211), the second end surface (212), the third end surface (213), and the fourth end surface (214); The first end surface (211), the second end surface (212), the third end surface (213), the fourth end surface (214) and the fifth end surface (215) are arranged to form the first space (216).

3. The brake wear particle emission collection device according to claim 2, characterized in that: The extended surfaces of the first end surface (211) and the second end surface (212) form an included angle α, and 120°<included angle α<180°.

4. The brake wear particle emission collection device according to claim 2, characterized in that: The projection of the third end surface (213) along the width direction of the wheel hub (100) is a first projection area, and the brake caliper (12) is completely placed in the first projection area; The projection of the fourth end surface (214) along the width direction of the wheel hub (100) is a second projection area, the brake caliper (12) is at least partially disposed in the second projection area, and the volume of the brake caliper (12) disposed in the second projection area is greater than one third of the volume of the brake caliper (12) and less than one half of the volume of the brake caliper (12).

5. The brake wear particle emission collection device according to claim 2, characterized in that: A bending portion is provided on a side of the third end surface (213) away from the fifth end surface (215), and the bending portion extends in a direction close to the brake caliper (12).

6. The brake wear particle emission collection device according to claim 2, characterized in that: The first end surface (211) and the second end surface (212) of the absorption cover (21) are both provided with avoidance grooves, so that the brake disc (11) can be partially accommodated in the first space (216).

7. The brake wear particle emission collection device according to claim 2, characterized in that: The first end surface (211) and the second end surface (212) are both perpendicular to the width direction of the hub (100).

8. The brake wear particle emission collection device according to claim 1, characterized in that: It also includes a controller, which is electrically connected to the brake caliper (12) and the fan (3).

9. The brake wear particle emission collection device according to claim 1, characterized in that: The collection tube (22) can be externally connected to a particle collection, detection and purification device.

10. The brake wear particle emission collection device according to claim 1, characterized in that: The absorption cover (21) is made of elastic material.

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