Fluid internal circulation brake drum

Abstract

The utility model discloses a fluid internal circulation brake drum which comprises a brake drum body (1), a plurality of first ribs (5) axially extending from the flat end of the brake drum body (1) to the arc-shaped end of the brake drum body (1) are arranged in an annular water channel (3), the first ribs (5) are evenly distributed in the circumferential direction of the brake drum body (1), and gaps are formed between the first ribs (5) and the arc-shaped end. The first ribs (5) opposite to the water through holes (4) are provided with wedge-shaped flow dividing heads (6), the wedge-shaped flow dividing heads (6) point to the arc-shaped end, meanwhile, a plurality of second ribs (10) axially extending from the arc-shaped end of the brake drum body (1) to the flat end are arranged in the annular water channel (3), the first ribs (5) and the second ribs (10) enable the annular water channel (3) to be divided into a plurality of arc-shaped holes, and the arc-shaped holes are connected to form a fluid channel. And the flowing path of water in the annular water channel (3) is increased, so that the contact time of the water and the brake drum is prolonged, the heat exchange time is long, and the cooling effect on the brake drum is good.

Description

Technical Field

[0001] The utility model relates to a vehicle brake control component, in particular to a fluid internal circulation brake drum. Background Art

[0002] The brake drum is the friction pair of the drum brake. In addition to having the strength and rigidity required as a component, it should also have the highest possible and stable friction coefficient, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity.

[0003] Most vehicles, especially cargo vehicles, use brake pads and brake drums (i.e., brake drums) for braking. The wheel hub is equipped with heat dissipation holes for heat dissipation, but the heat dissipation effect is not ideal, especially when driving on long downhill sections, frequent braking is required to control the driving speed. This operation will cause the brakes (i.e., brake drums) to remain at high temperatures for a long time, and the high temperature is difficult to dissipate. The existing solution is to install a water spray tank and continuously spray the brake drums with water pipes to cool them down. However, when the brake drums are used intensively, the cooling effect of spraying is not ideal. The water used for spraying cannot be recycled and is directly discharged, increasing driving costs. On the other hand, water flows onto the road, causing the road surface to become slippery, and in winter, it will also cause the road surface to freeze, posing a greater safety hazard to other vehicles and causing damage to the road surface.

[0004] In the industry, some research has been done on drum brakes. For example, 202222045505.2 discloses an internal circulation cooling system for automobile brakes, including a brake drum, the outer circumferential surface of which is mounted with a first rotating seal and a second rotating seal, a sealing ring is mounted on the first rotating seal and the second rotating seal, and an annular cavity is formed between the brake drum and the first rotating seal, the second rotating seal and the sealing ring, and the water inlet pipe and the water outlet pipe are respectively connected to the sealing ring and communicated with the cavity. The above scheme is to add an annular cavity outside the brake drum. Although it can also meet the cooling effect, the seal is prone to failure, and it is unclear how to adapt to changes in the outer diameter. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a fluid internal circulation brake drum which is easy to install and has good cooling effect. The sand discharge holes in the casting process are used to achieve fluid sealing, which greatly enhances the structural strength of the brake drum.

[0006] The utility model solves its technical problems by adopting the following technical scheme: a fluid internal circulation brake drum, comprising a brake drum body 1, a plurality of arc-shaped brake linings arranged in a circumferential direction are detachably fixed on the inner wall of a brake circumferential portion 2 of the brake drum body 1, an annular water channel 3 surrounding the brake drum body 1 is provided between the inner wall and the outer wall of the brake circumferential portion 2, the length of the annular water channel 3 in the axial direction is equal to the length of the effective brake surface, the annular water channel 3 is symmetrically provided with water holes 4 extending upward through the arc-shaped end portions about the axis, and the water holes 4 are respectively connected to fluid elbows 12 as water inlets and outlets.

[0007] The annular water channel 3 has a plurality of first ribs 5 extending axially from the flat end of the brake drum body 1 to the arcuate end. The plurality of first ribs 5 are evenly distributed along the circumference of the brake drum body 1. There is a gap between the first ribs 5 and the arcuate end. The first ribs 5 opposite to the water through holes 4 are provided with wedge-shaped diverters 6, which point to the arcuate end. The flat ends on both sides of the first ribs 5 are provided with sand discharge holes 8, and the sand discharge holes 8 are provided with external threaded fluid plugs 9. External threaded water diverters 7 are provided outside the wedge-shaped diverters 6, and the external threaded water diverters 7 are connected to the fluid elbow 12 through the fluid elbow positioning sleeve 11.

[0008] At the same time, the inside of the annular water channel 3 has a plurality of second ribs 10 extending axially from the arc-shaped end to the flat end of the brake drum body 1. The plurality of second ribs 10 are evenly distributed along the circumference of the brake drum body 1. There is a gap between the second ribs 10 and the flat end. The first ribs 5 and the second ribs 10 are equal in number and are staggered to form a tortuous reciprocating closed liquid-cooled circulation water channel 3. Sand drainage holes 8 are also provided on both sides of the second ribs 10 and on the arc-shaped ends opposite to the first ribs 5. The sand drainage holes 8 are provided with externally threaded fluid plugs 9.

[0009] The fluid elbow positioning sleeve 11 has the same curvature as the arc-shaped end of the brake drum body 1 .

[0010] The connection between the fluid elbow positioning sleeve 11 and the external threaded water diversion nozzle 7 and the connection with the fluid elbow 12 are both provided with sealing ring grooves 13, and the sealing rings used in the connection are made of highly elastic silicone material.

[0011] The utility model has the following beneficial effects: the first rib and the second rib cast in one piece with the brake drum body can not only enhance the strength of the brake drum, but also divide the circulating heat dissipation annular water channel into a plurality of arc holes, each arc hole is interconnected to form a fluid channel, and a wedge-shaped diverter is provided on the first rib opposite to the water hole, which can effectively separate and form a two-way inlet and outlet fluid, accelerate the flow rate of the fluid in the brake drum, increase the flow path of water in the annular water channel, thereby extending the contact time between water and the brake drum, and the heat exchange time is long, and the cooling effect on the brake drum is good. The design of the sand discharge hole makes it unnecessary to adopt an overall seal for the brake drum body, and the sand discharge hole in the casting process is used to achieve fluid blocking, which greatly enhances the structural strength of the brake drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0014] Figure 3 It is a schematic diagram of the partially unfolded annular water channel of the utility model.

[0015] Figure 4 The utility model is a schematic diagram of the side structure of a water diversion nozzle connected with an external thread.

[0016] Figure 5 It is a schematic diagram of the structure of the water inlet of the utility model.

[0017] Figure 6 It is a schematic diagram of the structure of the external thread water diversion nozzle of the utility model.

[0018] Figure 7 This is a schematic diagram of the structure of the fluid elbow positioning sleeve of the utility model.

[0019] Figure 8 This is a schematic diagram of the fluid elbow structure of the utility model.

[0020] Brake drum body 1, brake circumference 2, annular water channel 3, water hole 4, first rib 5, wedge-shaped diverter 6, external thread water diverter 7, sand discharge hole 8, external thread fluid plug 9, second rib 10, fluid elbow positioning sleeve 11, fluid elbow 12, sealing ring groove 13. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0022] like Figure 1As shown in FIG. 8 , a fluid internal circulation brake drum comprises a brake drum body 1, wherein the brake drum body 1 is a cylindrical component, wherein one end has a flat cross section, which is the flat end; and the other end has an arc-shaped transition section, which is the arc-shaped end; a plurality of arc-shaped brake linings arranged along the circumference of the brake circumference portion 2 of the brake drum body 1 are detachably fixed on the inner wall thereof, and an annular water channel 3 surrounding the brake drum body 1 is provided between the inner wall and the outer wall of the brake circumference portion 2, and the axial length of the annular water channel 3 is equal to the length of the effective braking surface, and the annular water channel 3 is symmetrically provided with water holes 4 extending upward through the arc-shaped end portions about the axis, and the water holes 4 are respectively connected to the external fluid bend pipes 12 as water inlet and outlet.

[0023] The annular water channel 3 has a plurality of first ribs 5 extending axially from the flat end of the brake drum body 1 to the arc-shaped end. The plurality of first ribs 5 are evenly distributed along the circumference of the brake drum body 1. There is a gap between the first ribs 5 and the arc-shaped end. The first ribs 5 opposite to the water holes 4 are provided with wedge-shaped diverters 6, and the wedge-shaped diverters 6 point to the arc-shaped end. Sand discharge holes 8 are provided on the flat ends on both sides of the first ribs 5, and then the sand discharge holes 8 are blocked by external threaded fluid plugs 9. External threaded water diverters 7 are provided outside the wedge-shaped diverters 6, and the external threaded water diverters 7 are connected to the fluid elbow 12 through a fluid elbow positioning sleeve 11. The fluid elbow positioning sleeve 11 has the same curvature as the arc-shaped end of the brake drum body 1, and the connection between the fluid elbow positioning sleeve 11 and the external threaded water diverter 7 and the connection with the fluid elbow 12 are provided with sealing ring grooves 13, and the sealing ring used in the connection is made of high elastic silicone material.

[0024] The wedge-shaped flow divider 6 and the external threaded water divider 7 can realize single-hole double-sided inlet and outlet, so that the fluid in the brake drum body 1 is divided into two, and the flow rate of the fluid in the brake drum is accelerated, so that the flow in the brake drum can be quickly taken out.

[0025] At the same time, the annular water channel 3 has a plurality of second ribs 10 extending axially from the arc-shaped end to the flat end of the brake drum body 1. The plurality of second ribs 10 are evenly distributed along the circumference of the brake drum body 1. There is a gap between the second ribs 10 and the flat end. The first ribs 5 and the second ribs 10 are equal in number and arranged in a staggered manner, forming a zigzag reciprocating closed liquid cooling circulation water channel 3. The arc-shaped ends on both sides of the second ribs 10 and opposite to the first ribs 5 are also provided with sand discharge holes 8, which are then sealed with external threaded fluid plugs 9. The first ribs 5 and the second ribs 10 divide the annular water channel 3 into a plurality of arc-shaped holes, each of which is interconnected to form a fluid channel, which increases the flow path of water in the annular water channel 3, thereby extending the contact time between water and the brake drum, and the heat exchange time is long, which has a good cooling effect on the brake drum.

Claims

1. A fluid internal circulation brake drum, comprising a brake drum body (1), characterized in that: An annular water channel (3) surrounding the brake drum body (1) is provided between the inner wall and the outer wall of the brake circumference (2) of the brake drum body (1); the length of the annular water channel (3) in the axial direction is equal to the length of the effective brake surface; the annular water channel (3) is symmetrically provided with water holes (4) extending upward through the arc-shaped end portions about the axis; the water holes (4) are respectively connected to the fluid elbows (12) as water inlets and water outlets; The annular water channel (3) has a plurality of first ribs (5) extending axially from the flat end of the brake drum body (1) to the arc-shaped end. The plurality of first ribs (5) are evenly distributed along the circumference of the brake drum body (1). There is a gap between the first ribs (5) and the arc-shaped end. A wedge-shaped flow diverter (6) is provided on the first rib (5) opposite to the water through hole (4). The wedge-shaped flow diverter (6) points to the arc-shaped end. At the same time, the annular water channel (3) has a plurality of second ribs (10) extending axially from the arc-shaped end of the brake drum body (1) to the flat end. The plurality of second ribs (10) are evenly distributed along the circumference of the brake drum body (1). There is a gap between the second ribs (10) and the flat end. The first ribs (5) and the second ribs (10) are equal in number and arranged in an alternating manner, forming a zigzag reciprocating closed liquid cooling circulation water channel (3).

2. The fluid internal circulation brake drum according to claim 1, characterized in that: Sand discharge holes (8) are provided on the flat ends of both sides of the first rib (5), and the sand discharge holes (8) are provided with externally threaded fluid plugs (9); an externally threaded water diversion nozzle (7) is provided outside the wedge-shaped diversion head (6), and the externally threaded water diversion nozzle (7) is connected to the fluid elbow (12) through a fluid elbow positioning sleeve (11); Sand discharge holes (8) are also provided on the arc-shaped ends on both sides of the second rib (10) and opposite to the first rib (5), and the sand discharge holes (8) are provided with external threaded fluid plugs (9).

3. The fluid internal circulation brake drum according to claim 2, characterized in that: The fluid elbow positioning sleeve (11) has the same curvature as the arc-shaped end of the brake drum body (1).

4. The fluid internal circulation brake drum according to claim 2, characterized in that: The connection between the fluid elbow positioning sleeve (11) and the externally threaded water diverter nozzle (7), and the connection with the fluid elbow (12) are both provided with sealing ring grooves (13), and the sealing rings used in the connection are made of highly elastic silicone material.

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