Improved structure for preventing high temperature of brake drum and bearing

Abstract

The invention discloses an improved structure for preventing high temperature of a brake drum and a bearing, the improved structure comprises a tire, the tire and a rim assembly matched with the tire, the rim assembly comprises a rim and a hub, the rim is fastened on the hub through a stud and a nut, a half-shaft sleeve is arranged at the center of the hub, and the half-shaft sleeve is connected with the tire. A half shaft is assembled on the hub in an inserted mode, the half shaft is screwed into the hub through a double-end bolt, the half shaft is fastened on the hub, a half shaft sleeve is connected with a first bearing in a sleeved mode, a fan assembly is arranged on the outer circumference of the hub, and a brake drum is fastened on the hub through a fastening nut and a fastening bolt on the hub. The fan assembly comprises an impeller and a fan, the impeller and the fan are connected to the two sides of the large-plane connecting hole of the hub through bolts, a round air duct is assembled on the impeller, and a second bearing is installed on the other side, away from the first bearing, of the hub.

Description

Technical Field

[0001] This invention belongs to the field of vehicle braking system cooling technology, specifically relating to an improved structure for preventing high temperatures in brake drums and bearings. Background Technology

[0002] A brake is a device that slows down, stops, or keeps moving parts at a stop; it is a mechanical part that can stop or slow down moving parts in machinery. Brakes can be divided into two main categories: industrial brakes and automotive brakes. Automotive brakes are further divided into service brakes, parking brakes, and counterbalanced brakes. During driving, the newer type of counterbalanced brake is generally used because it works in conjunction with a helical groove brake drum to maintain the vehicle's balance throughout the journey. Furthermore, its braking stability is currently the best among automotive brakes, providing excellent protection, especially for drivers of heavy-duty vehicles.

[0003] Frequent braking can cause brake pads to overheat, leading to reduced braking force and thermal expansion, and in severe cases, brake system lockup. Currently, brake pads used in vehicles in my country mainly suffer from the following problems: 1. When driving on mountainous or hilly downhill roads, frequent and prolonged braking can easily cause the braking system to overheat, resulting in brake pads reaching temperatures above 350℃. This reduces the coefficient of friction, burns out the pads, and affects braking stability; 2. Overheating of the lubricating oil during emergency braking can burn out the bearings.

[0004] In view of the above factors, an improved structure is provided to prevent high temperatures in the brake drum and bearings. Minimizing losses through structural improvements is the primary task for safe production. Summary of the Invention

[0005] The purpose of this invention is to provide an improved structure for preventing high temperatures in brake drums and bearings, thereby solving the problems mentioned in the background art.

[0006] The objective of this invention is achieved through the following technical solution: an improved structure for preventing high temperatures in brake drums and bearings, comprising a tire, a rim assembly that mates with the tire, the rim assembly comprising a rim and a hub, the rim being fastened to the hub by double-ended bolts and nuts, a half-shaft sleeve being provided at the center of the hub, a half-shaft being inserted and mounted on the hub, the half-shaft being screwed into the hub by double-ended bolts, the half-shaft being fastened to the hub, a first bearing being fitted onto the half-shaft sleeve, a fan assembly being provided on the outer circumference of the hub, and a brake drum being fastened to the hub by fastening nuts and fastening bolts.

[0007] Furthermore, the fan assembly includes an impeller and a fan, and the impeller and the fan are connected to both sides of the large flat connecting hole of the hub by bolts, and a round air duct is mounted on the impeller.

[0008] Furthermore, a second bearing is installed on the side of the hub away from the first bearing.

[0009] Furthermore, a shoe assembly is provided inside the brake drum, the shoe assembly includes a brake shoe, the brake shoe is mounted on a shoe assembly pin, and the shoe assembly pin is mounted on a brake cam bracket.

[0010] Furthermore, the shoe assembly is also provided with an oil seal assembly, which is installed on the axle housing oil seal stop.

[0011] Furthermore, an inner cavity impeller is bolted onto the hub, and the inner cavity impeller is positioned opposite to the brake shoe.

[0012] Furthermore, the shoe assembly pin includes a shoe pin shaft and a shoe shaft support fixed on the end face of the brake cam bracket. A camshaft support is provided on the brake cam bracket. The shoe pin shaft is used to install the shoe assembly. A camshaft is provided on the brake cam bracket. The camshaft passes through the brake cam bracket and cooperates with the camshaft support.

[0013] Furthermore, the brake cam bracket is provided with rectangular channels evenly distributed along the circumference of the brake cam bracket, the rectangular channels being airflow passages, and the brake cam bracket being connected to the axle housing.

[0014] Furthermore, the impeller and the brake drum always maintain the same angular velocity, and the impeller provides ventilation and cooling to the outer surface of the brake drum.

[0015] Furthermore, the brake cam bracket is provided with at least 11 ventilation holes along its circumferential surface, which facilitate airflow into the inner cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention cools the inner and outer surfaces of the brake drum, brake pads, wheel hub, and bearings when the vehicle brakes generate high temperatures.

[0017] This invention adds a sealing element to prevent bearing lubricating oil from being sucked out of the bridge housing cavity by the impeller, which would cause a reduction in lubricating oil and lead to bearing burnout.

[0018] In this invention, the impeller and the brake drum assembly have the same angular velocity when the vehicle is moving. The impeller ventilates and cools the outer surface of the brake drum, and the impeller draws the air out of the brake drum. The purpose is to remove heat with the airflow, and at the same time cool the brake drum, hub and bearing.

[0019] This invention uses an air-cooling device to economically solve production safety problems, prevent accident losses, and address property damage and personal safety issues caused by accidents. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall assembly of the present invention; Figure 2 This is a three-dimensional schematic diagram of the wheel rim assembly of the present invention; Figure 3 This is a schematic diagram of the wheel hub of the present invention; Figure 4 This is a schematic diagram of the fan of the present invention; Figure 5 This is a schematic diagram of the circular air duct of the present invention; Figure 6 This is a schematic diagram of the brake drum assembly of the present invention; Figure 7 This is a schematic diagram of the hoof assembly of the present invention; Figure 8 This is a schematic diagram of the hoof support of the present invention; Figure 9 This is a schematic diagram of the expansion of the hoof plate of the present invention; Figure 10 This is a schematic diagram of the brake cam bracket of the present invention; Figure 11 This is a schematic diagram of the internal impeller of the present invention; Figure 12 This is a schematic diagram of the fan of the present invention. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] like Figure 1-12 As shown, an improved structure for preventing high temperatures in brake drums and bearings includes a tire 1, characterized in that: the tire 1 and the rim assembly that mates with the tire 1, the rim assembly includes a rim 5 and a hub 10, the rim 5 is fastened to the hub 10 by a double-headed bolt 15 and a nut 16; A half-shaft sleeve 11 is provided at the center of the hub 10. A half-shaft 4 is inserted and assembled on the hub 10. The half-shaft 4 is screwed into the hub 10 by a double-headed bolt 2 and is fastened to the hub 10. A first bearing 8 is sleeved and installed on the half-shaft sleeve 11. A fan assembly 17 is provided on the outer circumference of the hub 10, and the brake drum 14 is fastened to the hub 10 by fastening nuts 15 and fastening bolts 16.

[0025] The fan assembly 17 includes an impeller 9 and a fan 13. The impeller 9 and the fan 13 are connected to the two sides of the large flat connecting hole of the hub 10 by bolts. A circular air duct 12 is mounted on the impeller 9 to prevent the bearing lubricating oil from being sucked out of the bridge housing cavity by the impeller, which would cause the lubricating oil to decrease and the bearing to burn out.

[0026] When the vehicle brakes and generate high temperatures, the fan assembly cools the inner and outer surfaces of the brake drum, brake pads, wheel hub, and bearings.

[0027] A second bearing 18 is installed on the hub 10 on the side away from the first bearing 8.

[0028] In the above embodiment, the first bearing 8 is installed in another bearing hole of the hub 10, and a bearing is installed at each end of the hub 10.

[0029] The brake drum 14 is provided with a shoe assembly, which includes a brake shoe 19. The brake shoe 19 is mounted on a shoe assembly pin 21, and the shoe assembly pin 21 is mounted on a brake cam bracket 23.

[0030] The shoe assembly is also provided with an oil seal assembly 22, which is installed on the axle housing oil seal stop.

[0031] The oil seal provided in the above embodiments can prevent the bearing grease from being sucked away.

[0032] An inner cavity impeller 20 is also bolted onto the hub 10, and the inner cavity impeller 20 is arranged opposite to the brake shoe 19.

[0033] The shoe assembly pin 21 includes a shoe pin shaft 26 and a shoe shaft support 24 fixed on the end face of the brake cam bracket 23. A camshaft support 25 is provided on the brake cam bracket 23. The shoe pin shaft 26 is used to install the shoe assembly. A camshaft 27 is provided on the brake cam bracket 23. The camshaft 27 passes through the brake cam bracket 23 and cooperates with the camshaft support 25.

[0034] The brake cam support 23 has rectangular channels evenly distributed along its circumference. These rectangular channels are airflow passages. The brake cam support 23 is connected to the axle housing.

[0035] The impeller 9 and the brake drum 14 always maintain the same angular velocity, and the impeller 9 provides ventilation and cooling to the outer surface of the brake drum 14.

[0036] In the above embodiment, the impeller 9 ventilates and cools the outer surface of the brake drum. The impeller draws air out of the brake drum, so that the airflow can carry away heat and cool the brake drum, hub and bearing at the same time.

[0037] The fan 9 and the air duct 12 together form a ventilation hole with the hub 10, which promotes airflow into the inner cavity and reduces the temperature of the outer surface of the hub.

[0038] In the above embodiment, the brake cam bracket 23 has at least 11 vents along its circumferential surface, which facilitate airflow into the inner cavity. When the vehicle is moving, the impeller and the brake drum assembly have the same angular velocity.

[0039] This invention solves the problem of existing brakes lacking active cooling. The design is simple, using an internal impeller and a large external impeller and fan blades, resulting in a large air volume. When the vehicle is moving, the impeller and brake drum assembly rotate at the same speed as the original wheels. The cooling function starts when the vehicle begins to move, so the base temperature of each component is relatively low. During braking, the air carries away some of the heat, increasing braking safety.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An improved structure for preventing high temperatures in brake drums and bearings, comprising a tire (1), characterized in that: The tire (1) and the rim assembly that mates with the tire (1), the rim assembly including the rim (5) and the hub (10), the rim (5) being fastened to the hub (10) by double-headed bolts (15) and nuts (16); A half-shaft sleeve (11) is provided at the center of the hub (10). A half-shaft (4) is inserted and assembled on the hub (10). The half-shaft (4) is screwed into the hub (10) by a double-headed bolt (2). The half-shaft (4) is fastened on the hub (10). A first bearing (8) is sleeved and installed on the half-shaft sleeve (11). A fan assembly (17) is provided on the outer circumference of the hub (10), and the brake drum (14) is fastened to the hub (10) by fastening nuts (15) and fastening bolts (16).

2. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 1, characterized in that: The fan assembly (17) includes an impeller (9) and a fan (13). The impeller (9) and the fan (13) are connected by bolts on both sides of the large flat connecting hole of the hub (10). A round air duct (12) is mounted on the impeller (9).

3. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 2, characterized in that: A second bearing (18) is installed on the hub (10) on the side away from the first bearing (8).

4. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 3, characterized in that: The brake drum (14) is provided with a shoe assembly, which includes a brake shoe (19). The brake shoe (19) is mounted on a shoe assembly pin (21), and the shoe assembly pin (21) is mounted on a brake cam bracket (23).

5. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 4, characterized in that: The shoe assembly is also provided with an oil seal assembly (22), which is installed on the axle housing oil seal stop.

6. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 5, characterized in that: An inner cavity impeller (20) is also bolted onto the hub (10), and the inner cavity impeller (20) is arranged opposite to the brake shoe (19).

7. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 6, characterized in that: The shoe assembly pin (21) includes a shoe pin shaft (26) and a shoe shaft support (24) fixed on the end face of the brake cam bracket (23). A camshaft support (25) is provided on the brake cam bracket (23). The shoe pin shaft (26) is used to install the shoe assembly. A camshaft (27) is provided on the brake cam bracket (23). The camshaft (27) passes through the brake cam bracket (23) and cooperates with the camshaft support (25).

8. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 7, characterized in that: The brake cam bracket (23) has rectangular channels evenly distributed along its circumference. The rectangular channels are airflow channels. The brake cam bracket (23) is connected to the axle housing.

9. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 8, characterized in that: The impeller (9) and the brake drum (14) always maintain the same angular velocity, and the impeller (9) provides ventilation and cooling to the outer surface of the brake drum (14).

10. The improved structure for preventing high temperatures in the brake drum and bearings according to claim 9, characterized in that: The brake cam bracket (23) is provided with at least 11 vents along the circumferential surface, through which airflow enters the inner cavity.

Images