CN117570133A - Adjustable drum brake for electric vehicle - Google Patents
Adjustable drum brake for electric vehicle Download PDFInfo
- Publication number
- CN117570133A CN117570133A CN202410050691.XA CN202410050691A CN117570133A CN 117570133 A CN117570133 A CN 117570133A CN 202410050691 A CN202410050691 A CN 202410050691A CN 117570133 A CN117570133 A CN 117570133A
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- Prior art keywords
- brake
- fixedly connected
- embedded
- ring
- air inlet
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- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000009423 ventilation Methods 0.000 claims abstract description 33
- 238000007664 blowing Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/82—Features relating to cooling for internally-engaging brakes
- F16D65/827—Features relating to cooling for internally-engaging brakes with open cooling system, e.g. cooled by air
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
An adjustable drum brake for an electric vehicle belongs to the technical field of drum brakes, and aims to solve the technical problems that the existing drum brake is easy to accumulate heat and has potential safety hazards when the electric vehicle brakes for many times on long downhill; according to the invention, through the arrangement of the air inlet component, the sealing component, the supporting component, the transmission component, the centrifugal rotating component and the blowing component, in the braking process, the embedded rod can be inserted into the embedded hole, so that the face gear and the outer tooth ring are rotated, the brake shoe and the brake pad can be radiated through the rotation of the fan, meanwhile, the internal and external air can circulate through the air inlet hopper, the ventilation pipe and the communication hole, the heat of the brake shoe and the brake pad can be taken away, after the downhill is finished, the angle of the spur gear can be adjusted under the dead weight of the balancing weight, the ventilation pipe can be sealed, the radiation of the brake pad in the long downhill can be realized, the reduction of the braking effect can be avoided, and the safety can be improved.
Description
Technical Field
The invention relates to the technical field of drum brakes, in particular to an adjustable drum brake for an electric vehicle.
Background
The drum brake is also called a block brake, and the brake friction plate is pressed on the inner side of the brake drum by the brake transmission mechanism, so that braking force is generated, wheels are decelerated according to requirements or stopped in the shortest distance, so that driving safety is ensured, when the conventional drum brake is used, heat is difficult to dissipate due to structural limitation, when an electric vehicle runs on a long downhill slope, multiple times of spot braking are needed for braking, heat accumulation is easy to occur in the drum brake when multiple times of spot braking are needed, the temperature of the brake plate in the drum brake is too high, the braking effect of the drum brake is reduced, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide an adjustable drum brake for an electric vehicle, which can solve the problems that the conventional drum brake is easy to accumulate heat and has potential safety hazard when the electric vehicle brakes for many times on a long downhill in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the adjustable drum brake for the electric vehicle comprises a brake bottom plate and a brake drum embedded in one side of the brake bottom plate, wherein the brake drum is not contacted with the brake bottom plate, two sides of the brake bottom plate are connected with a cam shaft in a penetrating and rotating manner, one end of the cam shaft is fixedly connected with a rocker arm, a brake assembly for braking and a heat dissipation assembly for dissipating heat are arranged on the inner wall of the brake bottom plate at intervals, and an air inlet adjusting assembly for adjusting air inlet is embedded in the outer surface of the brake bottom plate;
the air inlet adjusting component comprises an air inlet part embedded in the outer surface of the brake bottom plate and a sealing part arranged on one side of the brake component, the sealing part is arranged on one side of the air inlet part, the heat dissipation component comprises a supporting part arranged on the inner wall of the brake bottom plate and a transmission part arranged on the outer surface of the supporting part, the outer surface of the supporting part is embedded with a centrifugal rotating part, a blowing part is arranged between the transmission part and the inner wall of the brake bottom plate, and the air blowing component is provided with a plurality of groups, one end of the centrifugal rotating component is connected with the inner wall of the brake drum, the air inlet component is used for communicating the inside and the outside of the brake bottom plate, the sealing component is used for controlling air inlet of the air inlet component, the centrifugal rotating component is used for driving the brake drum to drive the supporting component to rotate, the supporting component is used for supporting the driving component and driving the driving component to rotate, and the driving component is used for driving the air blowing components of the plurality of groups to rotate so as to generate air flow.
Further, the air inlet component comprises a first supporting block fixedly connected to the outer surface of the brake bottom plate and an air inlet hopper fixedly connected to the upper end of the first supporting block, one end of the air inlet hopper is fixedly connected with a ventilation pipe, one end of the ventilation pipe is fixedly connected with the outer surface of the brake bottom plate in an embedded mode, the outer surface of the ventilation pipe is fixedly connected with a second supporting block, and the air inlet hopper and the ventilation pipe are used for air circulation.
Further, the brake component comprises a positioning block fixedly connected to the inner wall of the brake bottom plate, the lower end of the second supporting block is fixedly connected with the upper end of the positioning block, two groups of brake shoes are rotationally connected to the two ends of the positioning block, one ends of the two groups of brake shoes are in contact with the cam shaft, the outer surfaces of the two groups of brake shoes are fixedly connected with brake pads, the two groups of brake pads are matched with the position of the brake drum, a reset spring is fixedly arranged between the two groups of brake shoes, and the reset spring is used for pulling the two groups of brake shoes to reset.
Further, the sealing part comprises a rotating shaft which is rotationally connected with one side of the positioning block and a spur gear which is fixedly connected with one end of the rotating shaft, wherein two sides of the spur gear are penetrated and provided with arc holes, one side of the spur gear is in contact with one end of the ventilation pipe, the arc holes are matched with the position of the ventilation pipe, and the spur gear is used for controlling the air outlet of the ventilation pipe.
Further, the supporting part comprises a supporting ring fixedly connected to the inner wall of the brake bottom plate and an embedded ring which is embedded and rotationally connected with one end of the supporting ring, the other end of the embedded ring is fixedly connected with a fixed disc, and the supporting ring is used for supporting the embedded ring.
Further, the transmission part comprises a face gear fixedly connected to the outer surface of the fixed disc and an outer gear ring fixedly connected to one side of the face gear, the outer gear ring is meshed with the spur gear, a balancing weight is fixedly connected to the lowest part of the inner side of the outer gear ring, and the balancing weight is used for controlling the angle of the spur gear.
Further, the centrifugal rotating part comprises a connecting ring fixedly connected to the inner wall of the brake drum and a rotating ring fixedly connected to the other end of the connecting ring, a mounting hole is formed in the inner side of the rotating ring, a pressure spring is fixedly connected to the inner wall of the mounting hole, an embedded rod is fixedly connected to the other end of the pressure spring, the embedded rod is movably connected with the mounting hole in an embedded mode, and four groups of the mounting hole, the pressure spring and the embedded rod are uniformly arranged in an annular mode, and the pressure spring is used for extruding the embedded rod to move.
Furthermore, the fixed disk one end fixedly connected with transmission ring, the transmission ring surface has been seted up and has been inlayed the hole, and the embedding hole is the annular and evenly has been seted up four sets of, four sets of the embedded lever respectively with four sets of the activity gomphosis of embedding hole, the embedded lever is used for driving the transmission ring and rotates.
Further, the blowing component comprises a locating plate fixedly connected to the inner wall of the braking bottom plate and a transmission shaft rotationally connected with one side of the locating plate, a bevel gear and a fan are fixedly connected to the outer surface of the transmission shaft at intervals, the bevel gear is meshed with the face gear, and the face gear is used for driving the fan to rotate.
Further, the outer surface of the brake pad is arranged into a convex arc, the inner wall of the brake drum is provided with a jogged groove, the jogged groove is matched with the radian of the outer surface of the brake pad, and the jogged groove is used for enlarging the contact area.
Compared with the prior art, the invention has the beneficial effects that:
according to the adjustable drum brake for the electric vehicle, through the arrangement of the air inlet component, the sealing component, the supporting component, the transmission component, the centrifugal rotating component and the air blowing component, in the braking process, the embedded rod can be inserted into the embedded hole, so that the face gear and the outer tooth ring can rotate, the brake shoe and the brake pad can be cooled through the rotation of the fan, meanwhile, internal and external air can flow through the air inlet hopper, the ventilation pipe and the communication hole, heat of the brake shoe and the brake pad can be taken away, after the downhill is finished, the angle of the spur gear can be adjusted under the dead weight action of the balancing weight, the ventilation pipe can be sealed, the cooling of the brake pad can be realized in the long downhill, and therefore, the reduction of braking effect can be avoided, and the safety can be improved.
Drawings
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic view of the air intake adjusting assembly, heat dissipating assembly, camshaft and brake assembly of the present invention;
FIG. 3 is a schematic illustration of the brake assembly and brake pad configuration of the present invention;
FIG. 4 is a schematic view showing the separation of the structure of the air inlet and the closing member of the present invention;
FIG. 5 is a schematic view of a heat dissipating assembly and spur gear of the present invention;
FIG. 6 is a schematic view of the support member and transmission member structure of the present invention;
FIG. 7 is a schematic view showing the support member and the transmission member of the present invention in a disassembled configuration;
FIG. 8 is a schematic view of the centrifugal rotating member of the present invention;
FIG. 9 is a schematic view of the inner structure of the rotary ring according to the present invention;
fig. 10 is a schematic view of a blower unit structure according to the present invention;
fig. 11 is a cross-sectional view of a brake drum and brake pad construction of the present invention.
In the figure: 1. a brake drum; 11. a fitting groove; 2. a brake pad; 21. a communication hole; 3. a rocker arm; 4. an intake air adjusting assembly; 41. an air intake member; 411. a first support block; 412. an air inlet hopper; 413. a ventilation pipe; 414. a second support block; 42. a closing member; 421. a rotating shaft; 422. spur gears; 423. an arc-shaped hole; 5. a heat dissipation assembly; 51. a support member; 511. a support ring; 512. an embedded ring; 513. a fixed plate; 514. a drive ring; 515. an insertion hole; 52. a transmission member; 521. face gears; 522. an outer toothed ring; 523. balancing weight; 53. a centrifugal rotating member; 531. a connecting ring; 532. a rotating ring; 533. a mounting hole; 534. a pressure spring; 535. an embedded rod; 54. a blowing part; 541. a positioning plate; 542. a transmission shaft; 543. bevel gear; 544. a fan; 6. a cam shaft; 7. a brake assembly; 71. a positioning block; 72. a brake shoe; 73. a brake pad; 74. and a return spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, 2 and 5, an adjustable drum brake for an electric vehicle comprises a brake bottom plate 2 and a brake drum 1 embedded in one side of the brake bottom plate 2, wherein the brake drum 1 is not contacted with the brake bottom plate 2, two sides of the brake bottom plate 2 are connected with a cam shaft 6 in a penetrating and rotating way, one end of the cam shaft 6 is fixedly connected with a rocker arm 3, a brake component 7 for braking and a heat dissipation component 5 for dissipating heat are arranged on the inner wall of the brake bottom plate 2 at intervals, and an air inlet adjusting component 4 for adjusting air inlet is embedded in the outer surface of the brake bottom plate 2;
the air intake adjusting assembly 4 comprises an air intake part 41 embedded in the outer surface of the brake bottom plate 2 and a closing part 42 arranged on one side of the brake assembly 7, the closing part 42 is arranged on one side of the air intake part 41, the heat dissipating assembly 5 comprises a supporting part 51 arranged on the inner wall of the brake bottom plate 2 and a transmission part 52 arranged on the outer surface of the supporting part 51, a centrifugal rotating part 53 is embedded in the outer surface of the supporting part 51, a blowing part 54 is arranged between the transmission part 52 and the inner wall of the brake bottom plate 2, the blowing part 54 is provided with a plurality of groups, one end of the centrifugal rotating part 53 is connected with the inner wall of the brake drum 1, the air intake part 41 is used for communicating the inside and the outside of the brake bottom plate 2, the closing part 42 is used for controlling air intake of the air intake part 41, the centrifugal rotating part 53 is used for transmission so that the brake drum 1 can drive the supporting part 51 to rotate, the supporting part 51 is used for supporting the transmission part 52 and driving the transmission part 52 to rotate, and the transmission part 52 is used for driving the plurality of groups of blowing part 54 to rotate to generate air flow.
The invention is further described below with reference to examples.
Referring to fig. 3, 4 and 6-11, the air inlet component 41 includes a first support block 411 fixedly connected to the outer surface of the brake bottom plate 2 and an air inlet hopper 412 fixedly connected to the upper end of the first support block 411, one end of the air inlet hopper 412 is fixedly connected with a ventilation pipe 413, one end of the ventilation pipe 413 is fixedly connected with the outer surface of the brake bottom plate 2 in an embedded manner, the outer surface of the ventilation pipe 413 is fixedly connected with a second support block 414, the air inlet hopper 412 and the ventilation pipe 413 are used for air circulation, and the air inlet range can be enlarged through the air inlet hopper 412.
The brake assembly 7 comprises a positioning block 71 fixedly connected with the inner wall of the brake bottom plate 2, the lower end of a second supporting block 414 is fixedly connected with the upper end of the positioning block 71, two ends of the positioning block 71 are respectively and rotatably connected with a brake shoe 72, one ends of the two groups of brake shoes 72 are respectively and fixedly connected with a brake shoe 73 in contact with the cam shaft 6, the brake shoes 73 of the two groups of brake shoes 72 are matched with the brake drum 1 in position, a return spring 74 is fixedly arranged between the brake shoes 72 of the two groups of brake shoes 74, the return spring 74 is used for pulling the brake shoes 72 of the two groups of brake shoes to return, the brake shoes 72 of the two groups of brake shoes 72 can be pushed to be mutually far away through the rotation of the cam shaft 6, the brake shoes 73 of the two groups of brake shoes 73 are contacted with the inner wall of the brake drum 1, and therefore braking can be achieved.
The sealing component 42 comprises a rotating shaft 421 rotatably connected with one side of the positioning block 71 and a straight gear 422 fixedly connected with one end of the rotating shaft 421, wherein arc holes 423 are formed in two sides of the straight gear 422 in a penetrating mode, one side of the straight gear 422 is in contact with one end of the ventilation pipe 413, the arc holes 423 are matched with the position of the ventilation pipe 413, the straight gear 422 is used for controlling air outlet of the ventilation pipe 413, when the straight gear 422 rotates to enable the ventilation pipe 413 to be overlapped with the arc holes 423, air in the ventilation pipe 413 can enter the brake bottom plate 2 through the arc holes 423, and conversely, the end portion of the ventilation pipe 413 can be sealed.
The supporting member 51 includes a supporting ring 511 fixedly connected to the inner wall of the brake pad 2, and an embedded ring 512 rotatably connected to one end of the supporting ring 511, and a fixed disk 513 fixedly connected to the other end of the embedded ring 512, where the supporting ring 511 is used for supporting the embedded ring 512.
The transmission part 52 comprises an end face gear 521 fixedly connected to the outer surface of the fixed disk 513 and an outer tooth ring 522 fixedly connected to one side of the end face gear 521, the outer tooth ring 522 is in meshed connection with the spur gear 422, a balancing weight 523 is fixedly connected to the lowest position of the inner side of the outer tooth ring 522, the balancing weight 523 is used for controlling the angle of the spur gear 422, when the outer tooth ring 522 is not subjected to external force, the balancing weight 523 drives the outer tooth ring 522 to rotate due to self weight, the balancing weight 523 is located at the lowest position of the inner wall of the outer tooth ring 522, in the process, the outer tooth ring 522 drives the spur gear 422 to rotate, the spur gear 422 is stopped at a fixed angle, and one end of the ventilation pipe 413 is closed by the spur gear 422.
The centrifugal rotating part 53 comprises a connecting ring 531 fixedly connected to the inner wall of the brake drum 1 and a rotating ring 532 fixedly connected to the other end of the connecting ring 531, a mounting hole 533 is formed in the inner side of the rotating ring 532, a pressure spring 534 is fixedly connected to the inner wall of the mounting hole 533, an embedded rod 535 is fixedly connected to the other end of the pressure spring 534, the embedded rod 535 is movably connected with the mounting hole 533 in an embedded mode, four groups of the mounting hole 533, the pressure spring 534 and the embedded rod 535 are uniformly arranged in an annular mode, the pressure spring 534 is used for extruding the embedded rod 535 to move, when the electric vehicle runs, the brake drum 1 rotates along with wheels of the electric vehicle, the connecting ring 531 and the rotating ring 532 rotate, the embedded rod 535 of the four groups also rotates, and the embedded rod 535 can overcome the elasticity of the pressure spring 534 to move towards the inside of the mounting hole 533 when the rotating ring 532 rotates at a higher speed, and the pressure spring 534 can extrude the embedded rod 535 to move outwards the mounting hole 533 when the electric vehicle brakes.
One end of the fixed disk 513 is fixedly connected with a transmission ring 514, the outer surface of the transmission ring 514 is provided with embedded holes 515, four groups of embedded rods 535 are uniformly annularly provided with the embedded holes 515, the embedded rods 535 of the four groups are movably embedded with the embedded holes 515 of the four groups respectively, the embedded rods 535 are used for driving the transmission ring 514 to rotate, when the electric vehicle brakes, the embedded rods 535 of the four groups are extruded to be attached to the outer surface of the transmission ring 514, and the electric vehicle wheels still rotate in the braking process.
The air blowing component 54 comprises a positioning plate 541 fixedly connected to the inner wall of the brake bottom plate 2 and a transmission shaft 542 rotatably connected to one side of the positioning plate 541, wherein a bevel gear 543 and a fan 544 are fixedly connected to the outer surface of the transmission shaft 542 at intervals, the bevel gear 543 is meshed with the face gear 521, the face gear 521 is used for driving the fan 544 to rotate, and when the face gear 521 rotates, a plurality of groups of bevel gears 543 can be driven to rotate, so that the transmission shaft 542 drives the fan 544 to rotate, and when the fan 544 rotates, air flow blowing to the brake shoe 72 can be generated, so that the temperature of the brake shoe 72 and the brake pad 73 can be reduced.
The brake block 73 surface sets up to protruding arc, and the gomphosis groove 11 has been seted up to brake drum 1 inner wall, and gomphosis groove 11 and brake block 73 surface radian phase-match, and gomphosis groove 11 is used for enlarging area of contact, sets up gomphosis groove 11 and brake block 73 into the arc, can increase the area of contact of brake block 73 and gomphosis groove 11, can promote frictional force to can promote braking effect.
When the electric vehicle brakes on a long downhill without breaking points, the two groups of brake pads 73 can rub against the embedded grooves 11 to realize braking, in the braking process, the embedded rods 535 can be inserted into the embedded holes 515, so that the face gears 521 and the outer toothed rings 522 rotate, the face gears 521 rotate to drive the multiple groups of fans 544 to rotate, air flows blowing to the two groups of brake shoes 72 can be generated through the rotation of the multiple groups of fans 544, the brake shoes 72 and the brake pads 73 can be radiated, the outer toothed rings 522 rotate to drive the spur gears 422 to rotate, in the rotation process of the spur gears 422, because the electric vehicle slowly moves on a downhill, the internal and external gases can circulate through the air inlet hoppers 412, the ventilation pipes 413 and the communication holes 21, heat of the brake shoes 72 and the brake pads 73 can be taken away through the circulation of air, meanwhile, after downhill, along with the improvement of the speed of the electric vehicle, when the rotating speed of the rotating ring 532 exceeds a certain value, the embedded rod 535 is separated from the embedded hole 515 due to centrifugal force, the straight gear 422 can be adjusted to a position in contact with the ventilation pipe 413 under the action of the dead weight of the balancing weight 523, so that the ventilation pipe 413 can be sealed, dust entering between the brake drum 1 and the brake bottom plate 2 during running of the electric vehicle can be effectively reduced, heat dissipation of the brake pad 73 during long downhill can be realized, the reduction of the braking effect can be avoided, the safety can be improved, and meanwhile, the heat dissipation can be automatically started and ended along with the braking condition of the electric vehicle, so that the electric vehicle is convenient to use.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (10)
1. The utility model provides a drum brake with adjustable electric motor car, includes brake pad (2) and embedding setting brake drum (1) in brake pad (2) one side, and brake drum (1) and brake pad (2) contactless, and brake pad (2) both sides run through and rotate and be connected with camshaft (6), camshaft (6) one end fixedly connected with rocking arm (3), its characterized in that: a braking component (7) for braking and a heat dissipation component (5) for dissipating heat are arranged on the inner wall of the braking bottom plate (2) at intervals, and an air inlet adjusting component (4) for adjusting air inlet is embedded into the outer surface of the braking bottom plate (2);
the air inlet adjusting assembly (4) comprises an air inlet part (41) embedded in the outer surface of the brake bottom plate (2) and a sealing part (42) arranged on one side of the brake assembly (7), the sealing part (42) is arranged on one side of the air inlet part (41), the heat dissipation assembly (5) comprises a supporting part (51) arranged on the inner wall of the brake bottom plate (2) and a transmission part (52) arranged on the outer surface of the supporting part (51), a centrifugal rotating part (53) is embedded in the outer surface of the supporting part (51), an air blowing part (54) is arranged between the transmission part (52) and the inner wall of the brake bottom plate (2), the air blowing part (54) is provided with a plurality of groups, one end of the centrifugal rotating part (53) is connected with the inner wall of the brake drum (1), the air inlet part (41) is used for communicating the inner side with the brake bottom plate (2), the sealing part (42) is used for controlling air inlet of the air inlet part (41), the centrifugal rotating part (53) is used for driving the brake drum (1) to rotate the supporting part (51), the supporting part (52) is used for supporting the transmission part (52) and driving the transmission part (52) to rotate, and the transmission part (52) is used for driving the transmission part (52) to rotate, and the transmission part (52) is driven to rotate, and the air flow is driven to rotate.
2. An adjustable drum brake for an electric vehicle as set forth in claim 1, wherein: the air inlet component (41) comprises a first supporting block (411) fixedly connected to the outer surface of the brake bottom plate (2) and an air inlet hopper (412) fixedly connected to the upper end of the first supporting block (411), one end of the air inlet hopper (412) is fixedly connected with a ventilation pipe (413), one end of the ventilation pipe (413) is fixedly connected with the outer surface of the brake bottom plate (2) in an embedded mode, the outer surface of the ventilation pipe (413) is fixedly connected with a second supporting block (414), and the air inlet hopper (412) and the ventilation pipe (413) are used for air circulation.
3. An adjustable drum brake for an electric vehicle as claimed in claim 2, wherein: the brake assembly (7) comprises a positioning block (71) fixedly connected to the inner wall of a brake bottom plate (2), the lower end of a second supporting block (414) is fixedly connected with the upper end of the positioning block (71), two groups of brake shoes (72) are rotatably connected to two ends of the positioning block (71), one ends of the two groups of brake shoes (72) are in contact with a cam shaft (6), the outer surfaces of the two groups of brake shoes (72) are fixedly connected with brake pads (73), the two groups of brake pads (73) are matched with the positions of a brake drum (1), return springs (74) are fixedly arranged between the two groups of brake shoes (72), and the return springs (74) are used for pulling the two groups of brake shoes (72) to return.
4. An adjustable drum brake for electric vehicles according to claim 3, wherein: the sealing component (42) comprises a rotating shaft (421) which is rotationally connected with one side of the positioning block (71) and a straight gear (422) which is fixedly connected with one end of the rotating shaft (421), wherein arc-shaped holes (423) are formed in the two sides of the straight gear (422) in a penetrating mode, one side of the straight gear (422) is in contact with one end of the ventilation pipe (413), the arc-shaped holes (423) are matched with the position of the ventilation pipe (413), and the straight gear (422) is used for controlling air outlet of the ventilation pipe (413).
5. An adjustable drum brake for an electric vehicle as set forth in claim 4, wherein: the supporting component (51) comprises a supporting ring (511) fixedly connected to the inner wall of the brake bottom plate (2) and an embedded ring (512) which is embedded and rotatably connected with one end of the supporting ring (511), the other end of the embedded ring (512) is fixedly connected with a fixed disc (513), and the supporting ring (511) is used for supporting the embedded ring (512).
6. An adjustable drum brake for an electric vehicle as set forth in claim 5, wherein: the transmission part (52) comprises an end gear (521) fixedly connected to the outer surface of the fixed disc (513) and an outer gear ring (522) fixedly connected to one side of the end gear (521), the outer gear ring (522) is in meshed connection with the spur gear (422), a balancing weight (523) is fixedly connected to the lowest position inside the outer gear ring (522), and the balancing weight (523) is used for controlling the angle of the spur gear (422).
7. An adjustable drum brake for an electric vehicle as set forth in claim 6, wherein: the centrifugal rotating component (53) comprises a connecting ring (531) fixedly connected to the inner wall of the brake drum (1) and a rotating ring (532) fixedly connected to the other end of the connecting ring (531), a mounting hole (533) is formed in the inner side of the rotating ring (532), a pressure spring (534) is fixedly connected to the inner wall of the mounting hole (533), an embedded rod (535) is fixedly connected to the other end of the pressure spring (534), the embedded rod (535) is movably connected with the mounting hole (533) in an embedded mode, and four groups of the mounting hole (533), the pressure spring (534) and the embedded rod (535) are uniformly arranged in an annular mode, and the pressure spring (534) is used for extruding the embedded rod (535) to move.
8. An adjustable drum brake for electric vehicles according to claim 7, wherein: one end of the fixed disc (513) is fixedly connected with a transmission ring (514), an embedding hole (515) is formed in the outer surface of the transmission ring (514), four groups of embedding holes (515) are uniformly formed in an annular shape, the four groups of embedding rods (535) are respectively movably embedded with the four groups of embedding holes (515), and the embedding rods (535) are used for driving the transmission ring (514) to rotate.
9. An adjustable drum brake for an electric vehicle as set forth in claim 8, wherein: the blowing component (54) comprises a positioning plate (541) fixedly connected to the inner wall of the brake bottom plate (2) and a transmission shaft (542) rotatably connected to one side of the positioning plate (541), wherein a bevel gear (543) and a fan (544) are fixedly connected to the outer surface of the transmission shaft (542) at intervals, the bevel gear (543) is meshed with the face gear (521), and the face gear (521) is used for driving the fan (544) to rotate.
10. An adjustable drum brake for electric vehicles according to claim 3, wherein: the outer surface of the brake pad (73) is arranged to be a convex arc, the inner wall of the brake drum (1) is provided with a jogged groove (11), the jogged groove (11) is matched with the radian of the outer surface of the brake pad (73), and the jogged groove (11) is used for enlarging the contact area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410050691.XA CN117570133B (en) | 2024-01-15 | 2024-01-15 | Adjustable drum brake for electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410050691.XA CN117570133B (en) | 2024-01-15 | 2024-01-15 | Adjustable drum brake for electric vehicle |
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| CN117570133A true CN117570133A (en) | 2024-02-20 |
| CN117570133B CN117570133B (en) | 2024-04-16 |
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| CN202410050691.XA Active CN117570133B (en) | 2024-01-15 | 2024-01-15 | Adjustable drum brake for electric vehicle |
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| JPH09151967A (en) * | 1995-11-30 | 1997-06-10 | Minoru Nakagawa | Ventilated ring brake system |
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| Publication number | Publication date |
|---|---|
| CN117570133B (en) | 2024-04-16 |
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Application publication date: 20240220 Assignee: JIANGSU ZHETHAI ELECTRICAL TECHNOLOGY CO.,LTD. Assignor: KARASAWA TRAFFIC EQUIPMENT (TAIZHOU) Co.,Ltd. Contract record no.: X2024980017916 Denomination of invention: An adjustable drum brake for electric vehicles Granted publication date: 20240416 License type: Common License Record date: 20241011 |