Rear axle combined retarder assembly structure with multiple stages of brake disc sets and heat dissipation channels

Abstract

The invention relates to the technical field of rear axles, and discloses a rear axle combined retarder assembly structure with a multi-stage brake disc set and a heat dissipation channel, which solves the problems that the brake performance is poor due to the fact that an existing rear axle retarder does not have the multi-stage brake capacity, and brake discs are prone to overheating damage due to the fact that the existing rear axle retarder does not have the heat dissipation channel. Driving shafts are fixedly installed at the two ends of the rear axle body correspondingly, three brake discs are fixedly installed on the surfaces of the two driving shafts correspondingly, hubs are fixedly installed at the ends, away from each other, of the two driving shafts correspondingly, and supporting frames are fixedly installed at the two ends of the surface of the rear axle body through fixing ferrules correspondingly. Mounting covers are fixedly mounted at the ends, away from each other, of the two supporting frames, partition plates are fixedly mounted in the middles of the interiors of the two mounting covers, and three openings are formed in each partition plate; the rear axle retarder has the multi-stage braking capacity and is high in braking performance, and due to the fact that the heat dissipation channel is arranged, overheating damage to the brake disc is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of rear axles, and in particular relates to a rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel. Background Art

[0002] The rear-axle combined retarder is an auxiliary braking device integrated into the vehicle's rear axle. It generates reverse torque through hydraulic or electromagnetic principles to assist the main brake system in deceleration. Its compact structure and direct coupling with the rear-axle drivetrain efficiently convert the vehicle's kinetic energy into and dissipate heat, making it particularly suitable for sustained braking scenarios such as long downhill slopes. This technology is widely used in heavy-duty trucks, large buses, and construction vehicles, significantly reducing main brake wear, extending service life, and improving driving safety. In special operating conditions such as mines and ports, the rear-axle combined retarder, with its efficient and stable braking performance, has become a key piece of equipment for ensuring transportation efficiency and safety.

[0003] The existing rear axle retarder does not have multi-stage braking capability, resulting in poor braking performance, and does not have a heat dissipation channel, causing the brake disc to be easily overheated and damaged. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel, which effectively solves the problem in the above background technology that the existing rear axle retarder does not have multi-stage braking capability, resulting in poor braking performance, and does not have a heat dissipation channel, causing the brake disc to be easily overheated and damaged.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel, comprising a rear axle body, drive shafts fixedly mounted at both ends of the rear axle body, three brake discs fixedly mounted on the surfaces of the two drive shafts, wheel hubs fixedly mounted on the ends of the two drive shafts facing away from each other, support frames fixedly mounted on both ends of the rear axle body through fixing rings, mounting covers fixedly mounted on the ends of the two support frames facing away from each other, partitions fixedly mounted on the middle portions of the interiors of the two mounting covers, three openings respectively formed on the two partitions, hydraulic cylinders fixedly mounted on the inner tops of the two mounting covers, six brake pads respectively disposed on the lower portions of the interiors of the two mounting covers, transmission assemblies provided at the transmission ends of the two hydraulic cylinders, the two transmission assemblies being transmission-connected to the corresponding six brake pads, and power output to the corresponding brake pads via the two transmission assemblies during operation of the two hydraulic cylinders, so that the brake pads contact the brake discs for multi-stage braking, a plurality of first air ducts equidistantly formed on the surface of the brake discs, and a plurality of second air ducts equidistantly formed on the circumferential surface of the brake discs.

[0006] Preferably, the two transmission assemblies each include a moving beam, two three-stage transmission bars are fixedly installed in the middle of the bottom of the two moving beams, a first-stage transmission bar is fixedly installed at both ends of the bottom of the two moving beams, and a second-stage transmission bar is fixedly installed at the lower part of the two moving beams and between the two three-stage transmission bars and the two first-stage transmission bars.

[0007] Preferably, sliders are fixedly mounted on both ends of the tops of the two movable beams through support arms, and sliding grooves are provided on the inner walls of both sides of the two mounting covers, and the sliders are slidably mounted inside the corresponding sliding grooves.

[0008] Preferably, a sliding sleeve is fixedly installed in the middle of both sides of the two movable beams through a connecting rod, a sliding rod is inserted into the interior of the sliding sleeve, and the bottom of the sliding rod is fixedly connected to the top of the partition respectively.

[0009] Preferably, corresponding first-stage moving blocks, second-stage moving blocks and third-stage moving blocks are provided below the four first-stage transmission bars, the four second-stage transmission bars and the four third-stage transmission bars and inside the six openings.

[0010] Preferably, a rectangular rod is fixedly installed inside the opening, the lower parts of the first-level moving block, the second-level moving block and the third-level moving block are all arranged on the surface of the rectangular rod through a rectangular sleeve, and a baffle is fixedly installed in the middle of the surface of the rectangular rod, and an inclined block is fixedly installed on the upper part of one side of the first-level moving block, the second-level moving block and the third-level moving block.

[0011] Preferably, two springs are sleeved on the surface of the rectangular rods, both ends of the springs are fixedly connected to the rectangular sleeves and the baffle respectively, and two corrugated sleeves are fixedly installed between the two rectangular sleeves and the baffle on the same rectangular rod.

[0012] Preferably, the bottoms of the first-level moving block, the second-level moving block and the third-level moving block are all fixedly installed with connecting strips, and limiting rods are inserted between the limiting holes at both ends of the six connecting strips inside the same mounting cover. Both ends of the limiting rods are fixedly connected to the inner walls on both sides of the mounting cover, and the bottoms of the connecting strips are fixedly connected to the brake pads.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) During operation, two hydraulic cylinders are controlled simultaneously to drive two moving beams to move downward. When the moving beams move downward, the support arms drive the sliders to slide inside the slide grooves, and the connecting rods drive the sleeves to slide on the surfaces of the slide rods at the same time, thereby increasing the stability of the two moving beams when they move downward. When the two moving beams move downward, the four first-level transmission bars first push the corresponding first-level moving blocks, causing the four first-level moving blocks to move horizontally. When the four first-level moving blocks move, the connecting bars drive the four brake pads to contact the outer sides of the brake discs on both sides, thereby performing the first-level braking.

[0015] When the two hydraulic cylinders drive the two moving beams to move downward, they also push the corresponding secondary moving blocks to move horizontally through the four secondary transmission bars, so that the four secondary moving blocks drive the four brake pads to contact the inner sides of the brake discs on both sides through the connecting bars, thereby performing the second-level braking;

[0016] When the two hydraulic cylinders drive the two moving beams to continuously move downward, they also push the corresponding three-stage moving blocks to move horizontally through the four three-stage transmission bars. The four three-stage moving blocks drive the four brake pads to contact the two sides of the brake disc in the middle through the connecting bars, thereby performing the third-stage braking. The three-stage braking can greatly improve the braking effect.

[0017] (2) When the four first-level moving blocks, the four second-level moving blocks and the four third-level moving blocks move horizontally, they all drive the rectangular sleeve to slide along the surface of the rectangular rod, and simultaneously squeeze the spring and the corrugated sleeve, thereby ensuring the movement stability of the four first-level moving blocks, the four second-level moving blocks and the four third-level moving blocks while enabling them to have elastic reset capabilities, and the corrugated sleeve can protect the spring and increase the service life of the spring; when the connecting strip moves, it slides along the surface of the limit rod through the limit hole, thereby improving the stability of the brake pad when it moves;

[0018] When the brake pad contacts the brake disc, a large amount of heat is generated by friction. The heat is quickly discharged through a plurality of first air ducts and a plurality of second air ducts, thereby increasing the service life of the brake disc.

[0019] (3) The rear axle retarder has multi-stage braking capability, has strong braking performance, and is provided with a heat dissipation channel to avoid overheating and damage to the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached figure:

[0022] Figure 1 Schematic diagram of the rear axle combined retarder assembly structure with multi-stage brake disc group and heat dissipation channel of the present invention Figure 1 ;

[0023] Figure 2 Schematic diagram of the rear axle combined retarder assembly structure with multi-stage brake disc group and heat dissipation channel of the present invention Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the internal structure of the mounting cover of the present invention;

[0025] Figure 4 This is a schematic diagram of the enlarged structure of the interior of the mounting cover of the present invention;

[0026] Figure 5 For the present invention Figure 3 Schematic diagram of the partially enlarged structure;

[0027] Figure 6 For the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0028] Figure 7 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0029] In the figure: 1. rear axle body; 2. hydraulic cylinder; 3. wheel hub; 4. fixed ring; 5. support frame; 6. mounting cover; 7. brake disc; 8. first air duct; 9. second air duct; 10. brake pad; 11. moving beam; 12. primary transmission bar; 13. secondary transmission bar; 14. tertiary transmission bar; 15. connecting rod; 16. sliding sleeve; 17. sliding rod; 18. support arm; 19. slider; 20. slide groove; 21. partition; 22. opening; 23. rectangular rod; 24. rectangular sleeve; 25. tertiary moving block; 26. oblique block; 27. baffle; 28. spring; 29. corrugated sleeve; 30. connecting bar; 31. limiting hole; 32. limiting rod; 33. primary moving block; 34. secondary moving block; 35. drive shaft. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1 to 7The present invention includes a rear axle body 1, both ends of the rear axle body 1 are fixedly mounted with a drive shaft 35, the surfaces of the two drive shafts 35 are respectively fixedly mounted with three brake discs 7, the ends of the two drive shafts 35 away from each other are fixedly mounted with a wheel hub 3, both ends of the surface of the rear axle body 1 are fixedly mounted with a support frame 5 through a fixed ring 4, the ends of the two support frames 5 away from each other are fixedly mounted with a mounting cover 6, the middle part of the inside of the two mounting covers 6 is fixedly mounted with a partition 21, the two partitions 21 are respectively provided with three openings 22, and the two mounting covers 6 are fixedly mounted with a partition 21. A hydraulic cylinder 2 is fixedly installed on the inner top, and six brake pads 10 are respectively provided on the lower part of the two mounting covers 6. The transmission ends of the two hydraulic cylinders 2 are provided with transmission components, and the two transmission components are respectively connected to the corresponding six brake pads 10. When the two hydraulic cylinders 2 are in operation, the power is output to the corresponding brake pads 10 through the two transmission components, so that the brake pads 10 contact the brake disc 7 for multi-stage braking. The surface of the brake disc 7 is provided with a number of first air ducts 8 at equal distances in an annular shape, and the circumferential surface of the brake disc 7 is provided with a number of second air ducts 9 at equal distances.

[0032] During operation, the two hydraulic cylinders 2 are controlled simultaneously to drive the two transmission components to operate. When the two transmission components are in operation, three-level braking is performed on the six brake discs 7. When the brake pads 10 are in contact with the brake discs 7, a large amount of heat will be generated by friction. The heat will be quickly discharged through several first air ducts 8 and several second air ducts 9, thereby increasing the service life of the brake discs 7. This enables the rear axle retarder to have multi-level braking capabilities, its braking performance is strong, and a heat dissipation channel is provided to avoid overheating and damage to the brake discs 7.

[0033] In the second embodiment, based on the first embodiment, the two transmission assemblies each include a moving beam 11, two three-stage transmission bars 14 are fixedly mounted in the middle of the bottom of the two moving beams 11, a first-stage transmission bar 12 is fixedly mounted at both ends of the bottom of the two moving beams 11, and a second-stage transmission bar 13 is fixedly mounted on the lower part of the two moving beams 11 and located between the two three-stage transmission bars 14 and the two first-stage transmission bars 12;

[0034] Slide blocks 19 are fixedly mounted on both ends of the top of the two moving beams 11 through support arms 18. Slide grooves 20 are provided on the inner walls of both sides of the two mounting covers 6. The slide blocks 19 are slidably mounted inside the corresponding slide grooves 20. Slide sleeves 16 are fixedly mounted on the middle parts of both sides of the two moving beams 11 through connecting rods 15. Slide rods 17 are inserted into the interior of the slide sleeves 16. The bottoms of the slide rods 17 are fixedly connected to the tops of the partitions 21.

[0035] During operation, the two hydraulic cylinders 2 are controlled simultaneously to drive the two moving beams 11 to move downward. When the moving beams 11 move downward, the support arms 18 drive the sliders 19 to slide inside the slide grooves 20, and at the same time, the connecting rods 15 drive the sleeves 16 to slide on the surface of the slide rods 17, thereby increasing the stability of the two moving beams 11 when they move downward.

[0036] Below the four primary transmission bars 12, the four secondary transmission bars 13, and the four tertiary transmission bars 14, and located inside the six openings 22, there are corresponding primary moving blocks 33, secondary moving blocks 34, and tertiary moving blocks 25; the interiors of the openings 22 are all fixedly installed with rectangular rods 23, and the lower parts of the primary moving blocks 33, the secondary moving blocks 34, and the tertiary moving blocks 25 are all sleeved on the surface of the rectangular rods 23 through rectangular sleeves 24, and a baffle 27 is fixedly installed in the middle of the surface of the rectangular rods 23, and an inclined block 26 is fixedly installed on the upper part of one side of the primary moving blocks 33, the secondary moving blocks 34, and the tertiary moving blocks 25;

[0037] The surface of the rectangular rod 23 is sleeved with two springs 28, and the two ends of the spring 28 are fixedly connected to the rectangular sleeve 24 and the baffle 27 respectively. Two corrugated sleeves 29 are fixedly installed between the two rectangular sleeves 24 and the baffle 27 on the same rectangular rod 23; the bottom of the first-level moving block 33, the second-level moving block 34 and the third-level moving block 25 are fixedly installed with a connecting strip 30, and the limiting holes 31 at both ends of the six connecting strips 30 inside the same mounting cover 6 are inserted with limiting rods 32. The two ends of the limiting rods 32 are fixedly connected to the inner walls of the two sides of the mounting cover 6, and the bottoms of the connecting strips 30 are fixedly connected to the brake pads 10;

[0038] When the two moving beams 11 move downward, they first push the corresponding first-stage moving blocks 33 through the four first-stage transmission bars 12, causing the four first-stage moving blocks 33 to move horizontally. When the four first-stage moving blocks 33 move, they all drive the four brake pads 10 to contact the outer sides of the brake discs 7 on both sides through the connecting bars 30, thereby performing the first-stage braking.

[0039] When the two hydraulic cylinders 2 drive the two moving beams 11 to move downward, they also push the corresponding secondary moving blocks 34 to move horizontally through the four secondary transmission bars 13, so that the four secondary moving blocks 34 drive the four brake pads 10 to contact the inner sides of the brake discs 7 on both sides through the connecting bars 30, thereby performing the second-stage braking;

[0040] When the two hydraulic cylinders 2 drive the two moving beams 11 to continuously move downward, they also push the corresponding three-stage moving blocks 25 to move horizontally through the four three-stage transmission bars 14. The four three-stage moving blocks 25 drive the four brake pads 10 to contact both sides of the brake disc 7 located in the middle through the connecting bar 30, thereby performing the third-stage braking. The three-stage braking can greatly improve the braking effect.

[0041] When the four first-level moving blocks 33, the four second-level moving blocks 34 and the four third-level moving blocks 25 move horizontally, they all drive the rectangular sleeve 24 to slide along the surface of the rectangular rod 23, and simultaneously squeeze the spring 28 and the corrugated sleeve 29, thereby ensuring the movement stability of the four first-level moving blocks 33, the four second-level moving blocks 34 and the four third-level moving blocks 25 while enabling them to have the ability of elastic reset, and the corrugated sleeve 29 can protect the spring 28 and increase the service life of the spring 28; when the connecting bar 30 moves, it slides along the surface of the limit rod 32 through the limit hole 31, thereby improving the stability of the brake pad 10 when moving.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel, comprising a rear axle body (1), characterized in that: Drive shafts (35) are fixedly mounted on both ends of the rear axle body (1), three brake discs (7) are fixedly mounted on the surfaces of the two drive shafts (35), and wheel hubs (3) are fixedly mounted on the ends of the two drive shafts (35) that are away from each other. Support frames (5) are fixedly mounted on both ends of the surface of the rear axle body (1) through fixed collars (4), and mounting covers (6) are fixedly mounted on the ends of the two support frames (5) that are away from each other. A partition (21) is fixedly mounted in the middle of the interior of the two mounting covers (6), and the two partitions (21) are respectively provided with three openings (22). The inner tops of the two mounting covers (6) are fixedly mounted. A hydraulic cylinder (2) is fixedly installed on each of the two mounting covers (6). Six brake pads (10) are respectively provided at the lower part of the interior of each of the two mounting covers (6). Transmission components are provided at the transmission ends of the two hydraulic cylinders (2). The two transmission components are respectively connected to the corresponding six brake pads (10). When the two hydraulic cylinders (2) are in operation, power is output to the corresponding brake pads (10) through the two transmission components, so that the brake pads (10) contact the brake disc (7) to perform multi-stage braking. The surface of the brake disc (7) is provided with a plurality of first air ducts (8) at equal intervals in an annular manner, and the circumferential surface of the brake disc (7) is provided with a plurality of second air ducts (9) at equal intervals.

2. The rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel according to claim 1, characterized in that: The two transmission assemblies each comprise a moving beam (11), two third-stage transmission bars (14) are fixedly mounted in the middle of the bottom of the two moving beams (11), a first-stage transmission bar (12) is fixedly mounted at both ends of the bottom of the two moving beams (11), and a second-stage transmission bar (13) is fixedly mounted at the lower portion of the two moving beams (11) and located between the two third-stage transmission bars (14) and the two first-stage transmission bars (12).

3. The rear axle combined retarder assembly structure with a multi-stage brake disc assembly and a heat dissipation channel according to claim 2, characterized in that: Both ends of the top of the two moving beams (11) are fixedly mounted with sliders (19) through support arms (18), and both side inner walls of the two mounting covers (6) are provided with slide grooves (20), and the sliders (19) are respectively slidably mounted inside the corresponding slide grooves (20).

4. The rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel according to claim 2, characterized in that: The middle parts of both sides of the two moving beams (11) are fixedly mounted with sliding sleeves (16) through connecting rods (15), the interiors of the sliding sleeves (16) are plugged with sliding rods (17), and the bottoms of the sliding rods (17) are fixedly connected to the tops of the partitions (21).

5. The rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel according to claim 2, characterized in that: Corresponding first-stage moving blocks (33), second-stage moving blocks (34) and third-stage moving blocks (25) are provided below the four first-stage transmission bars (12), the four second-stage transmission bars (13) and the four third-stage transmission bars (14) and inside the six openings (22).

6. The rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel according to claim 5, characterized in that: A rectangular rod (23) is fixedly installed inside the opening (22); the lower parts of the first-stage moving block (33), the second-stage moving block (34) and the third-stage moving block (25) are sleeved on the surface of the rectangular rod (23) through a rectangular sleeve (24); a baffle (27) is fixedly installed in the middle of the surface of the rectangular rod (23); and an inclined block (26) is fixedly installed on the upper part of one side of the first-stage moving block (33), the second-stage moving block (34) and the third-stage moving block (25).

7. The rear axle combined retarder assembly structure with a multi-stage brake disc group and a heat dissipation channel according to claim 6, characterized in that: The surface of the rectangular rod (23) is sleeved with two springs (28), and both ends of the spring (28) are fixedly connected to the rectangular sleeve (24) and the baffle (27) respectively. Two corrugated sleeves (29) are fixedly installed between the two rectangular sleeves (24) and the baffle (27) on the same rectangular rod (23).

8. The rear axle combined retarder assembly structure with a multi-stage brake disc assembly and a heat dissipation channel according to claim 5, characterized in that: The bottoms of the first-stage moving block (33), the second-stage moving block (34) and the third-stage moving block (25) are all fixedly mounted with connecting bars (30); limiting rods (32) are inserted between the limiting holes (31) at both ends of the six connecting bars (30) inside the same mounting cover (6); both ends of the limiting rods (32) are fixedly connected to the inner walls on both sides of the mounting cover (6); and the bottoms of the connecting bars (30) are fixedly connected to the brake pads (10).

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