Circulating cooling brake drum

Abstract

The utility model discloses a circulating cooling brake drum which comprises an integrally-formed brake drum body, the two ends of the brake drum body are a plane end and an arc face end respectively, a plurality of circulating grooves in an annular array are formed in the peripheral face of the brake drum body, shunting strips are arranged in the circulating grooves, and sealing cover plates matched with the circulating grooves are arranged on the circulating grooves. A fluid inlet and a fluid outlet are formed in the brake drum body, and the fluid outlet is formed in the circulating groove opposite to the fluid inlet; according to the brake drum, the circulating groove is formed in the brake drum body, the U-shaped channel in the circulating groove forms the fluid circulating channel of the snakelike structure, and an internal circulation heat dissipation loop is formed in the brake drum, so that the temperature of a brake disc can be rapidly and efficiently reduced, and the problems that the road surface is wet and slippery due to water spraying cooling, and the driving safety of other vehicles is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of truck braking, in particular to a circulating cooling brake drum. Background Art

[0002] The car brake drum is a key component of car braking and is related to the driving safety of the car. Especially when driving on a long downhill section, frequent braking is required to control the driving speed. This operation will cause the brake drum to remain at high temperature 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 and cool it through a water pipe. However, under high-intensity use, the cooling and heat dissipation effect of spraying is not ideal. The water used for spraying and cooling cannot be recycled and is directly discharged, increasing driving costs; on the other hand, water flows onto the road, causing the road surface to be slippery, and in winter it will also cause the road surface to freeze, posing a major safety hazard to other vehicles and causing damage to the road surface. When the temperature of the edge of the brake disc rises to a certain temperature, the car will experience brake thermal decay when braking, affecting the braking effect.

[0003] At present, there are also brake drums that can dissipate heat and cool down without using a spray water tank. Usually, heat dissipation holes, ventilation holes and other heat dissipation components are opened on the brake drum. For example, the Chinese utility model patent with application number 201621236292.X discloses an air-cooled anti-explosion brake drum, which solves the problem of rapid evacuation of the heat of the friction block through the heat dissipation grooves, heat dissipation holes and ventilation holes under high-speed and heavy-load conditions to reduce the temperature of the brake drum. This device does not need to spray brake water during braking, but the cooling mainly relies on air cooling. Only when the air intake is large at high speed or the surrounding temperature is low can a good cooling effect be achieved. When the driving speed is low, the air intake is small or the surrounding ambient temperature is high, the cooling effect on the brake drum is significantly reduced, and the applicable environment is limited.

[0004] In order to solve the deficiencies in the prior art, the applicant has previously disclosed a fluid circulation heat dissipation brake drum with application number CN202321706434.4, which includes an outer drum and an inner drum. The lower part of the inner wall of the outer drum is provided with a heat dissipation channel of a serpentine structure extending upward to the upper part. The inner drum is coaxially arranged in the outer drum, and the two are sealed and connected. The outer wall of the inner drum contacts the heat dissipation channel, and a closed circulation cooling circuit is used for heat dissipation and cooling. The heat dissipation medium flows in the circuit throughout the process and will not spill or leak to the ground. While realizing the circulation heat dissipation and cooling of the outer drum and the inner drum of the brake drum, the heat dissipation medium is also recycled and reused to solve the problem of poor cooling effect. It not only improves the cooling effect, but also solves the problem that the traditional water spraying cooling causes the road surface to be slippery or icy, affecting the driving safety of other vehicles. However, when casting, the brake drum body needs to be cast into a cavity structure with a heat dissipation channel. Not only is the casting process more complicated, but the composition of the inner and outer shells will affect the strength of the brake drum body and reduce the service life. Summary of the invention

[0005] In order to solve the above problems, the utility model provides a circulating cooling brake drum which is less affected by the environment, has a good braking effect, does not bring potential safety hazards to the road surface, is easy to cast and has high strength.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a circulating cooling brake drum, comprising an integrally formed brake drum body, wherein the two ends of the brake drum body are respectively a flat end and a curved end, a plurality of circulation grooves in an annular array are provided on the outer peripheral surface of the brake drum body, a diverter strip is provided in the circulation groove, a positioning threaded hole is provided on the top surface of the diverter strip, one end of the diverter strip is a flat surface, and the other end is a curved surface, the flat surface of the diverter strip is connected to the midpoint of the end surface of the circulation groove close to the flat end of the brake drum body, the curved surface is opposite to the end surface of the circulation groove close to the curved end of the brake drum body, and a gap is left, so that the cavity in the circulation groove forms a "U"-shaped channel, each adjacent circulation groove is separated by a reinforcing strip, and an inverted "U"-shaped through groove is provided at the end of the reinforcing strip close to the flat end of the brake drum body to connect the adjacent circulation grooves together, so that the "U"-shaped channel in each circulation groove forms a fluid circulation channel with a serpentine structure.

[0007] The circulation groove is provided with a sealing cover plate adapted thereto, and a locking screw hole corresponding to the positioning screw hole on the top surface of the diverter strip is opened on the end surface of the sealing cover plate. The sealing cover plate is connected to the positioning screw hole of the diverter strip through the locking screw hole and the locking nut, so that a closed cavity structure is formed in the circulation groove.

[0008] The brake drum body is provided with a fluid inlet and a fluid outlet, wherein the fluid inlet is provided on one of the circulation grooves close to the arc surface end of the brake drum body, and a wedge-shaped diverter head is provided on the arc surface of the diverter strip opposite to the fluid inlet in the circulation groove, and a corresponding elbow through hole is provided at a position corresponding to the fluid inlet on the arc surface end of the brake drum body, and an elbow positioning sleeve is installed in the elbow through hole, and the elbow positioning sleeve is an "L"-shaped through pipe, and its outlet is connected to a fluid elbow, and the other end of the fluid elbow is connected to the fluid inlet through a water diverter nozzle, and sealing ring grooves are provided at the connection between the fluid elbow and the elbow positioning sleeve, as well as at the connection with the water diverter nozzle, and a rubber sealing ring is provided in the sealing ring groove.

[0009] The fluid outlet is opened on the circulation groove opposite to the fluid inlet. The fluid outlet is also provided with a bend positioning sleeve, a fluid bend and a water diversion nozzle. The connection method between each component and the fluid outlet is the same as that of the fluid inlet, and a wedge-shaped diversion head is also provided on the arc surface of the diversion strip opposite to the fluid outlet in the circulation groove.

[0010] As an optimization solution for this case, the water diversion nozzle includes a tube body and a diversion plate. A connecting plate is relatively arranged in the middle of the outer circumferential surface of the tube body, a threaded fixing hole is opened in the middle of the end surface of the connecting plate, and a sealing ring groove is opened in the lower part of the outer circumferential surface. The top end of the diversion plate is a wedge-shaped structure and is connected to the inner wall of the tube body, and the bottom end is an arc-shaped structure and extends out of the tube body.

[0011] As an optimization solution for this case, a reinforcing rib structure is provided on the top surface of the sealing cover plate.

[0012] Beneficial effects: 1. The utility model arranges a circulation groove on the brake drum body, and forms a "U"-shaped channel in the circulation groove into a serpentine fluid circulation channel, thereby forming an internal circulation heat dissipation loop in the brake drum, which can quickly and efficiently reduce the temperature of the brake drum, and also solves the problem of slippery road surface caused by water spraying for cooling, which affects the driving safety of other vehicles.

[0013] ②. The brake drum body of the utility model is formed by one-piece casting, so that the circulation groove, diverter strip, reinforcing strip and other components are connected without welding, with high strength, good stability and extended service life; there is no need to perform weld flaw detection on the brake disc, which greatly reduces the maintenance cost during use.

[0014] ③. The utility model sets the circulation groove into a semi-open structure and then closes it with a sealing cover. When the fluid is blocked during use, the cover can be quickly removed to clear the blockage, which effectively improves the fluid circulation cooling effect and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the utility model when the circulation groove is not sealed.

[0019] Figure 5 It is a structural schematic diagram of the fluid diversion in the utility model.

[0020] Figure 6 It is a schematic diagram of the expanded structure of the fluid circulation channel in the utility model.

[0021] Figure 7 It is a structural schematic diagram of the water diversion nozzle in the utility model.

[0022] Figure 8 for Figure 7Schematic diagram of the cross-sectional structure.

[0023] Fig. 9 It is a structural schematic diagram of the elbow positioning sleeve in the utility model.

[0024] Fig.10 It is a schematic diagram of the fluid elbow in the utility model.

[0025] Fig.11 It is a structural schematic diagram of the sealing cover plate in the utility model.

[0026] In the figure: 1. brake drum body; 2. circulation groove; 3. diverter strip; 4. reinforcing strip; 5. sealing cover plate; 6. fluid inlet; 7. fluid outlet; 8. wedge-shaped diverter head; 9. elbow positioning sleeve; 10. fluid elbow; 11. water diverter nozzle; 1101. pipe body; 1102. diverter plate. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. The drawings are all in a very simplified form and use inaccurate ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0029] See also Figure 1-11 This embodiment discloses a circulating cooling brake drum for installation on a vehicle for braking, specifically comprising an integrally formed brake drum body 1, Figure 1 , Figure 2 and Figure 3 It can be seen that the two ends of the brake drum body 1 are respectively a flat end and a curved end. Figure 4 A plurality of circulation grooves 2 in an annular array are provided on the outer circumferential surface of the brake drum body 1, and a diverter strip 3 is provided in the circulation groove 2. A positioning threaded hole is provided on the top surface of the diverter strip 3, and one end of the diverter strip 3 is a flat surface, and the other end is an arcuate surface. The flat surface of the diverter strip 3 is connected to the midpoint of the end surface of the circulation groove 2 close to the plane end of the brake drum body 1, and the arcuate surface is opposite to the end surface of the circulation groove 2 close to the arcuate end of the brake drum body 1, and a gap is left, so that the cavity in the circulation groove 2 forms a "U"-shaped channel, and each adjacent circulation groove 2 is separated by a reinforcing strip, and an inverted "U"-shaped through groove is provided at the end of the reinforcing strip close to the plane end of the brake drum body 1 to connect the adjacent circulation grooves 2 together, so that the "U"-shaped channel in each circulation groove 2 forms a fluid circulation channel with a serpentine structure. For the specific structure of the fluid circulation channel and the fluid circulation flow direction, refer to Figure 6.

[0030] See also Figure 1 and Figure 2 The circulation groove 2 is provided with a sealing cover plate 5 adapted thereto, and the end surface of the sealing cover plate 5 is provided with a locking screw hole corresponding to the positioning screw hole on the top surface of the diverter strip 3. Figure 3 It can be seen that the sealing cover plate 5 is connected to the positioning screw hole of the diverter strip 3 through the locking screw hole and the locking nut, so that a closed cavity structure is formed in the circulation groove 2. Fig.11 It can be seen that the top surface of the sealing cover plate 5 is provided with a reinforcing rib structure.

[0031] See also Figure 3 The brake drum body 1 is provided with a fluid inlet 6 and a fluid outlet 7. The fluid inlet 6 is provided on one of the circulation grooves 2 close to the arc surface end of the brake drum body 1. Figure 5 It can be seen that a wedge-shaped flow divider 8 is provided on the arc surface of the flow divider strip 3 opposite to the fluid inlet 6 in the circulation groove 2, and a corresponding elbow through hole is opened at the position corresponding to the fluid inlet 6 on the arc surface end of the brake drum body 1, and an elbow positioning sleeve 9 is installed in the elbow through hole. For specific structure, see Fig. 9 The elbow positioning sleeve 9 is an "L"-shaped through pipe, and its outlet is connected to a fluid elbow 10. The other end of the fluid elbow 10 is connected to the fluid inlet 6 through a water diversion nozzle 11. Fig.10 It can be seen that the connection between the fluid elbow 10 and the elbow positioning sleeve 9 and the connection with the water diversion nozzle 11 are both provided with sealing ring grooves, and rubber sealing rings are provided in the sealing ring grooves.

[0032] See also Figure 3 The fluid outlet 7 is opened on the circulation groove 2 opposite to the fluid inlet 6. The fluid outlet 7 is also provided with a bend positioning sleeve 9, a fluid bend 10 and a water diversion nozzle 11. The connection method between each component and the fluid outlet 7 is the same as that of the fluid inlet 6, and a wedge-shaped diversion head 8 is also provided on the arc surface of the diversion strip 3 opposite to the fluid outlet 7 in the circulation groove 2.

[0033] For specific structure, see Figure 7 and Figure 8 The water diversion nozzle 11 includes a tube body 1101 and a diversion plate 1102. A connecting plate is relatively arranged on the middle part of the outer peripheral surface of the tube body 1101. A threaded fixing hole is opened in the middle part of the end surface of the connecting plate, and a sealing ring groove is opened in the lower part of the outer peripheral surface. The top end of the diversion plate 1102 is a wedge-shaped structure and is connected to the inner wall of the tube body 1101, and the bottom end is an arc-shaped structure and extends out of the tube body 1101.

[0034] When using, see Figure 5The fluid enters the circulation groove 2 of the brake drum body 1 from the fluid inlet 6, and is first divided by the water diversion plate of the water diversion nozzle 11. After passing through the wedge-shaped diversion opposite to the fluid inlet, two fluids are formed to flow through the "U"-shaped channel in each circulation groove 2 to form a serpentine structure of the fluid circulation channel. For specific flow directions, see Figure 6 During the flow of the fluid, the fluid absorbs the heat generated by the brake drum body 1 and cools it down. The heat is then discharged from the fluid outlet 7 to an external cooling device for cooling and recycling.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A circulating cooling brake drum, comprising an integrally formed brake drum body (1), wherein two ends of the brake drum body (1) are respectively a flat end and a curved end, and characterized in that: A plurality of circulation grooves (2) in an annular array are provided on the outer peripheral surface of the brake drum body (1), a flow dividing strip (3) is provided in the circulation groove (2), a positioning threaded hole is provided on the top surface of the flow dividing strip (3), one end of the flow dividing strip (3) is a flat surface, and the other end is an arcuate surface, the flat surface of the flow dividing strip (3) is connected to the midpoint of the end surface of the circulation groove (2) close to the plane end of the brake drum body (1), the arcuate surface is opposite to the end surface of the circulation groove (2) close to the arcuate end of the brake drum body (1), and a gap is left, so that the cavity in the circulation groove (2) forms a "U"-shaped channel, each two adjacent circulation grooves (2) are separated by a reinforcing strip (4), and an inverted "U"-shaped through groove is provided at the end of the reinforcing strip (4) close to the plane end of the brake drum body (1) to connect the adjacent circulation grooves (2) together, so that the "U"-shaped channel in each circulation groove (2) forms a fluid circulation channel with a serpentine structure; The circulation groove (2) is provided with a sealing cover plate (5) adapted thereto, and a locking screw hole corresponding to the positioning screw hole on the top surface of the diverter strip (3) is opened on the end surface of the sealing cover plate (5), and the sealing cover plate (5) is connected to the positioning screw hole of the diverter strip (3) via the locking screw hole and the locking nut, so that a closed cavity structure is formed in the circulation groove (2); The brake drum body (1) is provided with a fluid inlet (6) and a fluid outlet (7). The fluid inlet (6) is provided on one of the circulation grooves (2) near the arc surface end of the brake drum body (1), and a wedge-shaped flow divider (8) is provided on the arc surface of the flow divider strip (3) in the circulation groove (2) opposite to the fluid inlet (6). A corresponding elbow through hole is provided at a position corresponding to the fluid inlet (6) on the arc surface end of the brake drum body (1). A elbow positioning sleeve (9) is installed in the elbow through hole. The elbow positioning sleeve (9) is an "L"-shaped through pipe, and its outlet is connected to a fluid elbow (10). The other end of the fluid elbow (10) is connected to the fluid inlet (6) through a water diversion nozzle (11), and a sealing ring groove is provided at the connection between the fluid elbow (10) and the elbow positioning sleeve (9), and at the connection with the water diversion nozzle (11). A rubber sealing ring is provided in the sealing ring groove. The fluid outlet (7) is provided on the circulation groove (2) opposite to the fluid inlet (6). The fluid outlet (7) is also provided with a bend positioning sleeve (9), a fluid bend (10) and a water diverter (11). The connection method between each component and the fluid outlet (7) is the same as that of the fluid inlet (6). A wedge-shaped diverter head (8) is also provided on the arc surface of the diverter strip (3) opposite to the fluid outlet (7) in the circulation groove (2).

2. A circulating cooling brake drum according to claim 1, characterized in that: The water diversion nozzle (11) comprises a tube body (1101) and a diversion plate (1102); a connecting plate is arranged opposite to the middle of the outer peripheral surface of the tube body (1101); a threaded fixing hole is provided in the middle of the end surface of the connecting plate; a sealing ring groove is provided at the lower part of the outer peripheral surface; the top end of the diversion plate (1102) is a wedge-shaped structure and is connected to the inner wall of the tube body (1101); the bottom end is an arc-shaped structure and extends out of the tube body (1101).

3. A circulating cooling brake drum according to claim 1 or 2, characterized in that: A reinforcing rib structure is provided on the top surface of the sealing cover plate (5).

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