Brake assembly and clutch

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a brake assembly and a clutch. The brake assembly comprises a connecting part, a brake plate and a plurality of first brake pads; the multiple first brake pads are used for being arranged on the power output shaft in a sleeving mode and are arranged at intervals in the first direction. The brake plate comprises a main plate and at least one second brake pad, the at least one second brake pad is arranged on the inner side of the main plate, the connecting part is arranged on the outer side of the main plate, the connecting part is used for being in transmission connection with a generator, and first brake pads are arranged on the two sides of each second brake pad in the first direction; wherein the first direction is the axis direction of the power output shaft. The brake assembly is provided with the connecting part, the connecting part can be in transmission connection with the power generator, when the brake assembly brakes the power output shaft, rotation kinetic energy of parts such as a transmission in transmission connection with the power output shaft can be converted into power of the power generator for power generation, and then recovery of the part of kinetic energy is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a brake component and a clutch. Background Art

[0002] The clutch is one of the important components of the car, and it is directly related to the comprehensive performance of the car and the safety of life and property. The clutch includes a brake assembly, a hydraulic drive assembly and a power output shaft. When the brake assembly brakes the power output shaft, the transmission and other components connected to the power output shaft have a large rotational kinetic energy, and this part of the rotational kinetic energy can drive the power output shaft to rotate for a certain period of time until the brake assembly brakes the power output shaft.

[0003] In the process of braking the power output shaft, the rotational kinetic energy of components such as a transmission drivingly connected to the power output shaft will be wasted. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a brake assembly and a clutch, wherein the brake assembly has a connecting portion, which can be connected to the generator in a transmission manner, so that when the brake assembly brakes the power output shaft, the rotational kinetic energy of components such as a transmission that are connected to the power output shaft in a transmission manner is converted into power of the generator for generating electricity, thereby realizing the recovery of this part of the kinetic energy.

[0005] In the first aspect, an embodiment of the utility model provides a brake assembly, which includes a connecting portion, a brake plate and a plurality of first brake pads; the plurality of first brake pads are sleeved on a power output shaft, and the plurality of first brake pads are arranged at intervals along a first direction; the brake plate includes a main board and at least one second brake pad, the at least one second brake pad is arranged on the inner side of the main board, the connecting portion is arranged on the outer side of the main board, the connecting portion is used to be connected to the generator transmission, and along the first direction, the first brake pads are arranged on both sides of each second brake pad; wherein the first direction is the axial direction of the power output shaft.

[0006] The braking assembly in this embodiment has a braking state and an initial state. When the braking assembly is in the initial state, there is a gap between the first brake pad and the second brake pad, and no frictional torque is generated between the first brake pad and the second brake pad. When the braking assembly transitions from the initial state to the braking state, after the first brake pad and the second brake pad are subjected to the force applied by the hydraulic drive assembly, the first brake pad and the second brake pad are pressed against each other, and a frictional force is generated between the first brake pad and the second brake pad, thereby achieving the braking of the power output shaft. Additionally, the second brake pad will rotate under the drive of the first brake pad, and the rotation of the second brake pad can drive the connecting portion installed on the main board to rotate. The connecting portion can transfer the rotational kinetic energy to the generator to drive the generator to generate electricity and achieve the recovery of kinetic energy.

[0007] In one embodiment, along the second direction, there is a gap between the main board and the first brake pad, where the second direction is the direction perpendicular to the axis of the power output shaft, or in other words, the second direction is the radial direction of the power output shaft.

[0008] In one embodiment, the braking assembly further includes a transmission structure. One end of the transmission structure is in transmission connection with the connecting portion, and the other end of the transmission structure is in transmission connection with the generator.

[0009] In one embodiment, the connecting portion is a toothed ring, and the toothed ring is sleeved outside the main board. The toothed ring can be integrally formed with the main board, or the toothed ring can be arranged outside the main board through interference fit, or the toothed ring can be arranged outside the main board through a connecting piece.

[0010] In one embodiment, the transmission structure includes a first gear, a transmission shaft, and a second gear. The two ends of the transmission shaft are respectively fixedly connected to the first gear and the second gear. The first gear meshes with the toothed ring, and the second gear is used for transmission connection with the input end of the generator. The radius of the first gear is smaller than the radius of the second gear. The radii of the first gear and the second gear can also be adjusted according to actual needs.

[0011] In one embodiment, the connecting portion is a first sprocket, and the first sprocket is sleeved outside the main board; the transmission structure includes a second sprocket and a transmission chain, and the transmission chain transmits and connects the second sprocket and the first sprocket. The second sprocket is used for transmission connection with the generator. The specific connection method between the first sprocket and the main board is the same as the connection method between the toothed ring and the main board, and will not be elaborated here.

[0012] In one embodiment, the connecting portion is a first pulley, and the first pulley is sleeved outside the main board; the transmission structure includes a second pulley, a second transmission shaft, and a conveyor belt. The conveyor belt drives and connects the second pulley and the first pulley, and the second transmission shaft passes through the second pulley and rotates synchronously with the second pulley. The specific connection manner between the first pulley and the main board is the same as that between the toothed ring and the main board, and will not be elaborated here.

[0013] In one embodiment, along the first direction, at least a first keyway is provided on the first brake pad located at the end, and at least one second keyway is provided on the power output shaft, and the first keyway and the second keyway correspond to each other.

[0014] In a second aspect, the present application further provides a clutch, including a power output shaft, a hydraulic drive assembly, and a brake assembly in any technical solution of the first aspect; the hydraulic drive assembly is disposed on the power output shaft, and the hydraulic drive assembly is used to drive the brake assembly to switch the brake assembly between an initial state and a braking state; when the hydraulic drive assembly drives the brake assembly to be in the braking state, the second brake pad presses and frictions with the first brake pad. When the clutch brakes, since the brake assembly includes a connecting portion, the energy of devices such as a transmission connected to the power output shaft can be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a clutch provided by an embodiment of the present invention;

[0016] Figure 2 is a cross-sectional view of a clutch provided by an embodiment of the present invention;

[0017] Figure 3 is a cross-sectional view of a first friction plate in a clutch provided by an embodiment of the present invention;

[0018] Figure 4 is a cross-sectional view of a brake assembly provided by an embodiment of the present invention.

[0019] Reference numerals: 10 - power output shaft; 20 - fixing assembly; 30 - clutch assembly; 31 - first friction plate; 310 - core plate; 311 - wear-resistant layer; 312 - oil groove; 32 - second friction plate; 40 - brake assembly; 41 - connecting portion; 42 - brake plate; 420 - main board; 421 - second brake pad; 43 - first brake pad; 44 - transmission structure; 440 - first gear; 441 - transmission shaft; 442 - second gear; 50 - hydraulic drive assembly; 51 - piston; 52 - brake pin; 53 - return spring; 60 - power input assembly; 70 - deep groove ball bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The brake assembly and the clutch provided in the embodiments of the utility model are described in detail below in conjunction with the accompanying drawings.

[0022] Figure 1 A schematic structural diagram of a clutch provided in an embodiment of the utility model. Figure 2 for Figure 1 The clutch comprises a fixed component 20, a power input component 60, a power output shaft 10, a hydraulic drive component 50, a clutch component 30 and a brake component 40, wherein the power output shaft 10 is used to connect with the gearbox, the fixed component 20, the hydraulic drive component 50 and the brake component 40 are all arranged on the power output shaft 10, the power input component 60 is arranged at one end of the power output shaft 10, the fixed component 20 is fixedly connected to the power output shaft 10, and the clutch component 30 is arranged between the fixed component 20 and the power input component 60. The hydraulic drive component 50 can drive the clutch component 30 to switch between the engaged state and the disengaged state. When the clutch component 30 is in the engaged state, the fixed component 20 and the power input component 60 are connected by transmission through the clutch component 30, and the hydraulic drive component 50 can also drive the brake component 40 to switch between the braking state and the initial state.

[0023] When the hydraulic drive component 50 drives the brake component 40 from the initial state to the braking state, the gearbox and other components connected to the power output shaft 10 have large rotational kinetic energy. The rotational kinetic energy and the rotational kinetic energy of the fixed component 20 can drive the generator to generate electricity through the brake component 40, and the generated electrical energy is stored in the battery.

[0024] The clutch assembly 30 includes a plurality of first friction plates 31 and a plurality of second friction plates 32. The plurality of first friction plates 31 are sleeved on the power input assembly 60, and the plurality of second friction plates 32 are arranged on the fixed assembly 20. The plurality of first friction plates 31 and the plurality of second friction plates 32 are arranged alternately along the axial direction (first direction) of the power output shaft 10. When the working oil provides power to the hydraulic drive assembly 20, the hydraulic drive assembly 20 applies pressure to the second friction plates 32, the second friction plates 32 and the first friction plates 31 are pressed tightly, and friction is generated between the second friction plates 32 and the first friction plates 31. The clutch assembly 30 is in an engaged state, and the power input assembly 60 drives the fixed assembly 20 to rotate through the clutch assembly 30. The fixed assembly 20 is connected to the power output shaft 10, thereby driving the power output shaft 10 to rotate.

[0025] When braking is required, the hydraulic drive component 50 will stop applying force to the clutch component 30. At the same time, the hydraulic drive component 50 will drive the brake component 40 from the initial state to the braking state. In the process of the brake component 40 entering the braking state from the initial state, the brake component 40 will drive the generator to work to achieve energy recovery.

[0026] Figure 3 This is a schematic diagram of the structure of the first friction plate provided in the embodiment of the present application, referring to Figures 1 to 3 In the above embodiment, the first friction plate 31 includes a core plate 310 and a plurality of wear-resistant layers 311 disposed on both sides of the core plate 310. The wear-resistant layers 311 on both sides of the core plate 310 are symmetrically disposed, and the plurality of wear-resistant layers 311 on each side are arranged at intervals along the second direction, and the gap between two adjacent wear-resistant layers 311 forms an oil groove 312. The oil groove 312 is used to fill the lubricating oil, which can take away the heat generated between the wear-resistant layer 311 and the second friction plate 32, that is, the lubricating oil can take away the heat generated between the first friction plate 31 and the second friction plate 32, and the depth of the oil groove 312 needs to be within a set range to ensure that there is enough lubricating oil in the oil groove.

[0027] Along the first direction, a second friction plate 32 located on the side away from the brake assembly 40 is fixedly connected to the fixed assembly 20, and the remaining second friction plates 32 are arranged on the fixed assembly 20, and the remaining second friction plates 32 can move relative to the fixed assembly 20 along the first direction.

[0028] Each second friction plate 32 and its adjacent first friction plate 31 can form a friction pair. It can be understood that along the first direction, two friction pairs are formed between the first friction plate 31 and the two second friction plates 32 on its two sides. And when the clutch assembly 30 is in the disengaged state, there is a gap between each second friction plate 32 and its adjacent first friction plate 31. In order to detect the gap between the second friction plate 32 and its adjacent first friction plate 31, a mark can be provided at the edge of the second friction plate 32. When the clutch assembly 30 changes from the disengaged state to the engaged state, or from the engaged state to the disengaged state, according to the distance that the mark position on the second friction plate 32 moves, the gap change between the second friction plate 32 and its adjacent first friction plate 31 can be determined, so as to determine the wear amount of each friction pair.

[0029] In the above embodiment, the hydraulic drive assembly 50 includes a piston 51, a brake pin 52 and at least one return spring 53. One end of the brake pin 52 is fixed to the piston 51, and the other end of the brake pin 52 extends toward the side where the brake assembly 40 is located. The piston 51 is sleeved on the power output shaft 10. The piston 51 is located between the clutch assembly 30 and the brake assembly 40. The piston 51 can move along the axis direction (the first direction) of the power output shaft 10 under the drive of the working oil. One end of the return spring 53 is arranged on the side of the piston 51 away from the brake assembly, and the other end of the return spring 53 is arranged on the side of the power output shaft 10 close to the power input assembly 60. Specifically, when the clutch assembly 30 changes from the disengaged state to the engaged state, the piston 51 moves toward the side of the second friction plate 32 under the drive of the working oil, so as to drive friction to be generated between the second friction plate 32 and the first friction plate 31, and further output the kinetic energy of the power input assembly 60 to the power output shaft 10 through the clutch assembly 30. When the piston 51 moves toward the side of the second friction plate 32 under the drive of the working oil, at least one return spring 53 contracts under the pressure of the piston 51. When the clutch assembly 30 changes from the engaged state to the disengaged state, the working oil pressure received by the piston 51 disappears. During the reset process of the return spring 53, the piston 51 and the brake pin 52 arranged on the piston 51 can be driven to move. The brake pin 52 passes through the fixing assembly 20 and contacts the first brake plate 43 included in the brake assembly 40 to realize the braking of the brake assembly 40.

[0030] In the above embodiments, the power input component 60 can be an inner hub. From the side of the power output shaft 10 away from the power input component 60 to the direction of the power input component 60, the outer diameter of the power output shaft 10 can be distributed in a stepped manner, that is, along the direction from the side of the power output shaft 10 away from the power input component 60 to the power input component 60, the outer diameter of the power output shaft 10 gradually decreases. More specifically, the outer side of the power output shaft 10 can include a first stepped surface, a second stepped surface, a third stepped surface, and a fourth stepped surface, and the first stepped surface, the second stepped surface, the third stepped surface, and the fourth stepped surface are connected in sequence. The braking component 40 is arranged on the first stepped surface, one end of the fixing component 20 is arranged on the second stepped surface, the other end of the fixing component 20 extends to the side away from the braking component 40, the piston 51 is arranged on the third stepped surface, one end of the return spring 53 is fixed to the third stepped surface, the other end of the return spring 53 is fixed on the piston 52, a deep groove ball bearing 70 is arranged on the fourth stepped surface, and the power input component 60 is connected to one end of the power output shaft 10 through the deep groove ball bearing 70.

[0031] The braking component will be introduced below.

[0032] Figure 4 It is a cross-sectional view of the braking component provided by the embodiment of the present application. Refer to Figure 1 、 Figure 2 and Figure 4 , the braking component 40 includes a connecting portion 41, a braking plate 42, and a plurality of first brake pads 43. Among them, the plurality of first brake pads 43 are sleeved on the power output shaft 10, and the plurality of first brake pads 43 are arranged at intervals along the first direction. The braking plate 42 includes a main plate 420 and at least one second brake pad 421. At least one second brake pad 421 is arranged on the inner side of the main plate 420, and the connecting portion 41 is arranged on the outer side of the main plate 420. The connecting portion 41 is used for driving connection with the generator. Along the first direction, both sides of each second brake pad 421 are provided with first brake pads 43. Among them, the first direction is the axial direction of the power output shaft 10.

[0033] The braking component 40 has an initial state and a braking state. When the braking component 40 is in the initial state, there is a gap between the first brake pad 43 and the second brake pad 421, and no frictional torque is generated between the first brake pad 43 and the second brake pad 421. In the process of the braking component 40 entering the braking state from the initial state, the first brake pad 43 close to the hydraulic driving component 50 is driven by the hydraulic driving component 50, so that the first brake pad 43 has a force away from the hydraulic driving component 50 to squeeze the second brake pad 421 and the remaining first brake pads 43, so that friction is generated between the first brake pad 43 and the second brake pad 421, thereby realizing the braking of the power output shaft 10.

[0034] During the process from when the hydraulic drive assembly 50 starts to drive the brake assembly 40 to brake the power output shaft 10 until the power output shaft 10 stops rotating, the second brake pad 421 will rotate driven by the frictional force of the first brake pad 43. The rotation of the second brake pad 421 can drive the connecting portion 41 installed on the main board 420, and the connecting portion 41 can transfer the rotational kinetic energy to the generator to drive the generator to generate electricity, realizing the recovery of kinetic energy.

[0035] Continue to refer to Figure 4 , in order to ensure that there is no interference between the first brake pad 43 and the side of the main board 420 facing the power output shaft 10, when the brake assembly 40 is in the braking state and the initial state, along the second direction, there is a gap between the side of the main board 420 facing the power output shaft 10 and the outer peripheral side of the first brake pad 43, so as to ensure that when the hydraulic drive assembly 50 drives the first brake pad 43 to press the second brake pad 421, there is no contact between the main board and the first brake pad 43, and improve the working stability of the brake assembly 40 in the braking state.

[0036] In the above embodiments, the number of the first brake pads 43 can be two, three, four, five, etc., and the number of the second brake pads 421 is one, two, three, or four, etc., that is, the number of the first brake pads 43 is one more than the number of the second brake pads 421.

[0037] When the brake assembly 40 is arranged on the power output shaft 10, along the first direction, at least one first keyway is provided on the first brake pad 43 away from the clutch assembly 30, and at least one second keyway is provided on the power output shaft 10. At least one first keyway and at least one second keyway correspond to each other. The first brake pad 43 is sleeved on the power output shaft 10 through a spline, and the first brake pad 43 can move on the power output shaft 10, so that when the hydraulic drive assembly 50 drives the first brake pad 43 close to the clutch assembly 30, the first brake pad 43 can press the second brake pad 421, generating frictional force between the first brake pad 43 and the second brake pad 421, realizing the braking of the power output shaft 10.

[0038] In order to ensure the stable transmission of kinetic energy, the brake assembly 40 further includes a transmission structure 44. One end of the transmission structure 44 is in transmission connection with the connecting portion 41, and the other end of the transmission structure 44 is connected to the generator.

[0039] In the above embodiments, the main board 420 is of an annular structure. The inner side of the main board 420 is the inner ring of the annular main board 420, and the outer side of the main board 420 is the outer ring of the annular main board 420. The structural form of the connecting portion 41 can be various, such as: the connecting portion 41 is a gear ring, a belt pulley or a sprocket, etc. Different forms of the connecting portion 41 need to correspond to different forms of the transmission structure 44 to ensure the stable output of kinetic energy.

[0040] In addition, the connecting portion 41 and the main board 420 can be integrally formed, or the connecting portion 41 and the main board 420 can be in interference fit, or the connecting portion 41 and the main board 420 can be detachably connected together through a connecting member.

[0041] When the connecting portion 41 is a gear ring, the gear ring is fixedly arranged on the outer side of the main board 420. The transmission structure 44 includes a first gear 440, a transmission shaft 441, and a second gear 442. The transmission shaft 441 drives the first gear 440 and the second gear 442 to be in transmission connection. The first gear 440 meshes with the gear ring, and the second gear 442 is used to be in transmission connection with the input end of the generator. When the braking assembly 40 is in a braking state, the main board 420 rotates, thereby driving the gear ring fixed on the outer side of the main board 420 to rotate. The rotation of the gear ring can drive the first gear 440 meshing with the gear ring. The first gear 440 drives the second gear 442 to rotate through the transmission shaft 441, and then transfers the kinetic energy to the generator to realize the recovery of the kinetic energy.

[0042] Wherein, the radius of the first gear 440 can be smaller than the radius of the second gear 442.

[0043] When the connecting portion 41 is a sprocket, the transmission structure 44 also includes a sprocket. At this time, the connecting portion 41 is the first sprocket, and the first sprocket can be sleeved on the outer side of the main board 420. The transmission structure 44 includes a second sprocket and a transmission chain. The transmission chain connects the first sprocket and the second sprocket, and the second sprocket is used to be in transmission connection with the generator. When the braking assembly 40 is in a braking state, the main board 420 rotates, thereby driving the first sprocket fixed on the outer side of the main board 420 to rotate. The first sprocket drives the second sprocket to rotate through the transmission chain, and the second sprocket can be in transmission connection with the input shaft of the generator, and then transfers the kinetic energy to the generator to realize the recovery of the kinetic energy.

[0044] When the connecting portion 41 is a pulley, the transmission structure 44 also includes a pulley. At this time, the connecting portion 41 is the first pulley, and the first pulley can be sleeved on the outer side of the main board 420. The transmission structure 44 includes a second pulley and a conveyor belt. The conveyor belt connects the first pulley and the second pulley, and the second pulley is in transmission connection with the generator through a second transmission shaft. When the braking assembly 40 is in a braking state, the main board 420 rotates, thereby driving the first pulley fixed on the outer side of the main board 420 to rotate. The first pulley drives the second pulley to rotate through the conveyor belt, and the second pulley can be in transmission connection with the generator through the second transmission shaft, and then transfers the kinetic energy to the generator to realize the recovery of the kinetic energy.

[0045] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications within.

Claims

1. A braking assembly, characterized in that, Comprising: A connecting part, a brake plate and a plurality of first brake pads; The plurality of first brake pads are sleeved on the power output shaft, and the plurality of first brake pads are arranged at intervals in a first direction; The brake plate includes a main board and at least one second brake pad. The at least one second brake pad is arranged on the inner side of the main board, the connecting part is arranged on the outer side of the main board, and the connecting part is used for driving connection with a generator. Along the first direction, the first brake pads are arranged on both sides of each second brake pad; Wherein, the first direction is the axial direction of the power output shaft.

2. The braking assembly according to claim 1, wherein Along a second direction, there is a gap between the main board and the first brake pad; wherein, the second direction is the direction perpendicular to the axis of the power output shaft.

3. The braking assembly according to claim 1, characterized in that, The brake assembly further includes a transmission structure, one end of the transmission structure is in driving connection with the connecting part, and the other end of the transmission structure is in driving connection with the generator.

4. The braking assembly according to claim 3, characterized in that The connecting part is a toothed ring, and the toothed ring is sleeved on the outer side of the main board.

5. The braking assembly according to claim 4, characterized in that, The transmission structure includes a first gear, a transmission shaft and a second gear. The two ends of the transmission shaft are respectively fixedly connected with the first gear and the second gear. The first gear meshes with the toothed ring, and the second gear is used for driving connection with the input end of the generator.

6. The braking assembly according to claim 5, wherein, The radius of the first gear is smaller than the radius of the second gear.

7. The braking assembly according to claim 3, wherein The connecting part is a first sprocket, and the first sprocket is sleeved on the outer side of the main board; The transmission structure includes a second sprocket and a transmission chain, and the transmission chain drives and connects the second sprocket and the first sprocket, and the second sprocket is used for driving connection with the generator.

8. The braking assembly according to claim 3, wherein, The connecting part is a first pulley, and the first pulley is sleeved on the outer side of the main board; The transmission structure includes a second pulley, a second transmission shaft and a transmission belt. The transmission belt drives and connects the second pulley and the first pulley. The second transmission shaft penetrates through the second pulley, and the second transmission shaft rotates synchronously with the second pulley.

9. The braking assembly according to any one of claims 1 to 8, characterized in that Along the first direction, at least a first keyway is arranged on the first brake pad at the end, and at least one second keyway is arranged on the power output shaft, and the first keyway and the second keyway correspond to each other.

10. A clutch, characterized in that, Comprising the power output shaft, a hydraulic drive assembly and the brake assembly according to any one of claims 1 to 9; The hydraulic drive assembly is arranged on the power output shaft, and the hydraulic drive assembly is used for driving the brake assembly to switch between an initial state and a braking state; When the hydraulic drive assembly drives the brake assembly to be in the braking state, the second brake pad presses and frictions with the first brake pad.

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