Vehicle braking energy recovery hydraulic device

Abstract

The invention relates to the related technical field of hydraulic cylinders, and discloses a vehicle braking energy recovery hydraulic device which comprises a hydraulic cylinder assembly and a generator assembly, the hydraulic cylinder assembly comprises a cylinder body and a piston rod, one end of the piston rod is provided with a piston sealing assembly, and a reset assembly is connected between the piston sealing assembly and the interior of the cylinder body; when the piston sealing assembly compresses hydraulic oil, the high sealing effect can be achieved, when the piston sealing assembly resets, the piston sealing assembly achieves the normal sealing effect, the high-pressure movement time of the piston sealing assembly is shortened, and the abrasion degree of the piston sealing assembly is reduced; the reset assembly can guarantee the reset effect of the piston sealing assembly and can improve the compression effect of hydraulic oil in the cylinder body, and therefore the vehicle braking energy recovery efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of hydraulic cylinders, and more specifically, relates to a hydraulic device for recovering vehicle braking energy. Background Technology

[0002] In vehicle braking energy recovery hydraulic systems, the core of recovering braking energy using an electro-hydraulic cylinder (a combination of a hydraulic cylinder and a generator) lies in converting the kinetic energy during vehicle braking into hydraulic energy, and then further into electrical energy for storage. When the vehicle brakes, the drive motor reverses or transmits kinetic energy to the hydraulic cylinder section of the electro-hydraulic cylinder via a transmission device. The piston in the hydraulic cylinder moves under pressure, compressing the hydraulic oil and converting mechanical energy into hydraulic energy. At this time, the inlet and outlet of the hydraulic cylinder are connected to the hydraulic circuit, forming high-pressure oil. The high-pressure oil drives the generator (such as a hydraulic motor-type generator) connected to the hydraulic cylinder to rotate, and the generator converts the hydraulic energy into electrical energy. The electrical energy is rectified, regulated, and stored in a battery or supercapacitor for subsequent vehicle acceleration or auxiliary drive, thus realizing the recovery of vehicle braking energy.

[0003] The existing technology for explosion-proof lighting fixtures still has the following drawbacks: In existing technologies, during the operation of hydraulic cylinders in vehicle braking energy recovery hydraulic devices, the piston seals in the hydraulic cylinders are prone to wear due to long-term high pressure and high-speed movement; and the sealing effect of the piston seals is limited, which can easily lead to hydraulic oil leakage when the hydraulic oil is squeezed under high pressure. This not only affects the system pressure stability, but may also pollute the environment and increase maintenance costs.

[0004] In the prior art, the piston seal in the hydraulic cylinder is usually pushed back to the initial position by the elastic force generated by the return spring, so as to realize the spring-assisted reset function and ensure that the piston seal is quickly reset under low pressure or zero pressure. However, the stiffness of the return spring is difficult to control. If the return spring is too soft, it will easily lead to insufficient reset, and if the return spring is too hard, it will affect the efficiency of vehicle braking energy recovery.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a hydraulic device for vehicle braking energy recovery, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0006] The present invention provides a hydraulic device for recovering vehicle braking energy, which overcomes the above-mentioned defects in the prior art.

[0007] The purpose and effect of the hydraulic device for vehicle braking energy recovery of the present invention are achieved by the following specific technical means: A hydraulic device for regenerating braking energy in a vehicle includes a hydraulic cylinder assembly and a generator assembly. The hydraulic cylinder assembly includes a cylinder body and a piston rod. One end of the piston rod is provided with a piston sealing assembly, and a reset assembly is connected between the piston sealing assembly and the interior of the cylinder body. The piston sealing assembly includes a piston member. The outer wall of the piston member is provided with a first rubber ring. The outer wall of the first rubber ring is provided with an annular groove. A second rubber ring is fitted inside the annular groove. The outer wall of the second rubber ring is provided with a first sealing ring. A second sealing ring is provided at each of the two outer walls of the first sealing ring. A third sealing ring is connected between the two outer walls of the second sealing ring. A first hollow elastic element is provided between the inner wall of the middle part of the first sealing ring and the outer wall of the second rubber ring. A plurality of hydraulic chambers are arranged in a circular array inside the piston member. A T-shaped push rod is radially slidable in the hydraulic chamber. One end of the T-shaped push rod is provided with a push plate. The other end of the T-shaped push rod is connected to the interior of the hydraulic chamber with a spring. An annular elastic element is connected between the two outer walls of the first sealing ring and one end of each of the two second sealing rings.

[0008] Preferably, the piston component has a cavity in the middle, the piston rod slides in the cylinder, one end of the piston rod is fixedly connected to the piston component, the second rubber ring slides in contact with the annular groove, one side wall of the first sealing ring, the second sealing ring, and the third sealing ring have a V-shaped cross-section, the middle outer wall of the third sealing ring contacts the inner wall of the cylinder, both ends of the second sealing ring contact the inner wall of the cylinder, the middle outer wall of the first sealing ring contacts the inner wall of the cylinder, the push plate slides in the annular groove, the opening direction of the cross-section of the first sealing ring is the same as the opening direction of the cross-section of the third sealing ring, and the opening direction of the cross-section of the first sealing ring is opposite to the opening direction of the cross-section of the second sealing ring.

[0009] Preferably, the cavity is connected to a plurality of hydraulic cavities, the T-shaped push rod has a connecting channel in the middle, the hydraulic cavity is connected to the interior of the first hollow elastic element through the connecting channel, and a solenoid valve is provided at one end of the connecting channel.

[0010] Preferably, the reset assembly includes a second hollow elastic element, one side wall of which has a V-shaped cross-section, and the interior of the second hollow elastic element communicates with the cavity.

[0011] Preferably, the second hollow elastic member has a frame in the middle, and a mounting plate is fixed at each end of the frame. A pressure rod is slidably provided at each end of the frame. A damping is provided between the ends of the two pressure rods that are close to each other. A movable plate is fixed at the ends of the two pressure rods that are far from each other. A pair of top rods are provided on the side of the two movable plates that are far from each other. The two pairs of top rods are respectively connected to the upper and lower ends of the interior of the second hollow elastic member.

[0012] Preferably, a pair of sliding rods are provided on the side of each of the two movable plates that are close to each other. The outer wall of each pair of sliding rods is in sliding contact with the mounting plate. A pair of compression springs are connected between one side of the mounting plate and one side of the movable plate. The compression springs are wound around the outer wall of the sliding rods. The outer wall of the compression rods is in sliding contact with the mounting plate.

[0013] Preferably, the outer wall of the movable plate is provided with a plurality of levers, and the outer wall of the mounting plate is rotatably connected to one side of the levers with a connecting plate. One end of the connecting plate is rotatably connected to one end of the mounting plate, and the other end of the connecting plate is rotatably connected to one side of the levers.

[0014] Preferably, the generator assembly includes a housing, a generator body is mounted at one end of the housing, and an oil passage carrier is mounted at the other end of the housing, the oil passage carrier being in communication with the interior of the cylinder.

[0015] Preferably, the oil circuit carrier has a drive chamber in the middle, a first rotating tube is rotatably arranged in the drive chamber, a water wheel is provided on the outer wall of the first rotating tube, the water wheel rotates in the drive chamber, a second rotating tube is provided at the upper end of the first rotating tube, the inner wall of the upper end of the second rotating tube is in spline contact with the output end of the generator body, and an overflow pipe is provided on the upper side of the oil circuit carrier, the overflow pipe covers the outside of the second rotating tube.

[0016] Preferably, the piston rod has a housing at one end away from the cylinder, and the outer wall of the cylinder slides in contact with the inner wall of the housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a hydraulic device for regenerating braking energy in vehicles. Through the arrangement of a first rubber ring, the outer walls at both ends of the first rubber ring slide in contact with the inner wall of the cylinder, thereby achieving a double sealing effect in the piston sealing assembly. Furthermore, through the arrangement of a second rubber ring, a first sealing ring, and two second sealing rings, the outer wall of the middle portion of one first sealing ring and the two ends of both second sealing rings slide in contact with the interior of the cylinder, achieving a multiple sealing effect in the piston sealing assembly and preventing hydraulic oil leakage. Finally, through the arrangement of a third sealing ring and an annular elastic element, the outer wall of the middle portion of the third sealing ring slides in contact with the inner wall of the cylinder, and the annular elastic element and the outer wall of the middle portion of the first sealing ring abut against the two ends of the second sealing ring, ensuring that the two ends of the second sealing ring and the middle portion of the third sealing ring are fully in contact with the inner wall of the cylinder, thus greatly enhancing the multiple sealing effect of the piston sealing assembly.

[0018] This invention discloses a hydraulic device for vehicle brake energy recovery. Through the arrangement of a T-shaped push rod, a push plate, and a cavity, the piston sealing assembly moves to compress a reset assembly. The second hollow elastic element in the reset assembly is compressed, causing hydraulic oil within the second hollow elastic element to be delivered to the cavity. The hydraulic oil in the cavity is then delivered to several hydraulic chambers. The hydraulic oil pushes the T-shaped push rod and push plate radially outward. This radial outward movement of the T-shaped push rod and push plate pushes the inner wall of the second rubber ring, reducing the distance between the outer wall of the second rubber ring and the inner wall of the cylinder. This increases the pressure contact between the first, second, and third sealing rings and the inner wall of the cylinder, thereby improving the sealing effect of the piston sealing assembly. Furthermore, through the connection channel, solenoid valve, and first hollow elastic element, the outer wall of the piston sealing assembly is in full contact with the inner wall of the cylinder. When the solenoid valve opens, the hydraulic oil in the cavity is transported to the first hollow elastic element through the solenoid valve and connection channel. The expansion of the first hollow elastic element further increases the degree of compression contact between the first sealing ring, second sealing ring, and third sealing ring and the inner wall of the cylinder, thereby further improving the sealing effect of the piston sealing assembly. Finally, when the piston sealing assembly compresses the hydraulic oil, it achieves a high sealing effect, and when the piston sealing assembly resets, it achieves a normal sealing effect, reducing the high-pressure movement time of the piston sealing assembly and reducing the degree of wear of the piston sealing assembly.

[0019] This invention discloses a vehicle braking energy recovery hydraulic device. Through the arrangement of a second hollow elastic element, pressure rods, damping, mounting plate, sliding rods, and compression springs, the second hollow elastic element in the reset assembly is compressed and deformed by the bottom of the cylinder and the piston sealing assembly. Two pairs of push rods push two movable plates closer together, which in turn causes the two pressure rods to move closer together. The movement of the two pressure rods generates elastic force through damping compression. The movement of the movable plates causes the two sliding rods to move, and the movable plates, in conjunction with the mounting plate, remain relatively fixed, thereby compressing the two compression springs and generating elastic force. This ensures that the piston sealing assembly can quickly reset under low or zero pressure conditions under the action of the damping elastic force and the elastic force of the two pairs of compression springs. Furthermore, the inclusion of a second hollow elastic element, with its V-shaped cross-section, allows for compression deformation. This deformation enables the central portion of the second hollow elastic element to move radially outward, compressing the hydraulic oil within the cylinder and rapidly generating high-pressure hydraulic oil. This improves the conversion of hydraulic energy into electrical energy, thus enhancing the efficiency of vehicle regenerative braking. Finally, the arrangement of the levers and connecting plates, with their reduced distance between the movable plate and the mounting plate, and the two connecting plates holding them together, allows the levers to swing away from each other. This further promotes the radial outward movement of the central portion of the second hollow elastic element, compressing the hydraulic oil and further improving the conversion of hydraulic energy into electrical energy. Therefore, the reset assembly not only ensures the effective reset of the piston sealing assembly but also enhances the compression of the hydraulic oil within the cylinder, thereby improving the efficiency of vehicle regenerative braking. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the first isometric structure of the present invention; Figure 2 This is a schematic diagram of the second isometric structure of the present invention; Figure 3 This is a schematic diagram of the first isometric structure of the generator assembly in this invention; Figure 4 This is a schematic diagram of the second isometric structure of the generator assembly in this invention; Figure 5 This is a front view structural diagram of the present invention; Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at point AA; Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point F; Figure 8 This is a cross-sectional view of the reset component in this invention; Figure 9 for Figure 5 Schematic diagram of the cross-sectional structure at point BB; Figure 10 for Figure 5 Schematic diagram of the cross-sectional structure at the CC section; Figure 11 This is a schematic diagram of the left-side structure of the present invention; Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure at the middle DD section; Figure 13 This is a cross-sectional view of the piston sealing assembly in this invention. Figure 14 for Figure 13 A magnified schematic diagram of the local structure at point G; Figure 15 for Figure 13 Schematic diagram of the cross-sectional structure at the middle EE section; Figure 16 This is a cross-sectional view of the rubber ring in this invention.

[0023] Explanation of reference numerals in the attached figures: Cylinder body 10, piston rod 11, outer shell 12, oil circuit carrier 13, housing 14, generator body 15, overflow pipe 16, drive chamber 17, first rotating pipe 18, water turbine 19, second rotating pipe 20, piston sealing assembly 21, reset assembly 22, piston component 23, first rubber ring 24, annular groove 25, second rubber ring 26, first sealing ring 27, second sealing ring 28, third sealing ring 29, annular elastic element 30, first hollow elastic element 31, push plate 32, cavity 33, hydraulic chamber 34, T-shaped push rod 35, spring 36, connecting channel 37, solenoid valve 38, second hollow elastic element 39, frame 40, movable plate 41, pressure rod 42, damping 43, push rod 44, mounting plate 45, slide rod 46, compression spring 47, lever plate 48, connecting plate 49. Detailed Implementation

[0024] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0025] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figure 1-16 As shown: This invention provides an embodiment of a hydraulic device for regenerating braking energy in vehicles. like Figure 1-16 As shown, the system includes a hydraulic cylinder assembly and a generator assembly. The hydraulic cylinder assembly includes a cylinder body 10 and a piston rod 11. One end of the piston rod 11 is provided with a piston sealing assembly 21. A reset assembly 22 is provided between the piston sealing assembly 21 and the interior of the cylinder body 10. The piston sealing assembly 21 includes a piston member 23. The outer wall of the piston member 23 is provided with a first rubber ring 24. The outer wall of the first rubber ring 24 is provided with an annular groove 25. A second rubber ring 26 is fitted inside the annular groove 25. The outer wall of the second rubber ring 26 is provided with a first sealing ring 27. A second sealing ring is provided at each of the two ends of the outer wall of the first sealing ring 27. A third sealing ring 29 is connected between the outer walls of the two ends of the second sealing ring 28. A first hollow elastic element 31 is provided between the inner wall of the middle part of the first sealing ring 27 and the outer wall of the second rubber ring 26. Several hydraulic chambers 34 are arranged in a circular array inside the piston 23. A T-shaped push rod 35 is radially slidable inside the hydraulic chamber 34. A push plate 32 is provided at one end of the T-shaped push rod 35. A spring 36 is connected between the other end of the T-shaped push rod 35 and the inside of the hydraulic chamber 34. An annular elastic element 30 is connected between the outer walls of the two ends of the first sealing ring 27 and one end of the two second sealing rings 28, respectively.

[0028] In practice, the piston sealing assembly 21 moves to compress the reset assembly 22. The second hollow elastic element 39 in the reset assembly 22 is compressed, causing the hydraulic oil inside the second hollow elastic element 39 to be delivered to the cavity 33. The hydraulic oil in the cavity 33 is then delivered to several hydraulic chambers 34. The hydraulic oil pushes the T-shaped push rod 35 and push plate 32 to move radially outward. The radial outward movement of the T-shaped push rod 35 and push plate 32 pushes the inner wall of the second rubber ring 26, reducing the distance between the outer wall of the second rubber ring 26 and the inner wall of the cylinder 10. This increases the degree of contact between the first sealing ring 27, the second sealing ring 28, the third sealing ring 29 and the inner wall of the cylinder 10, thereby improving the sealing effect of the piston sealing assembly 21.

[0029] The outer wall of the piston sealing assembly 21 is in full contact with the inner wall of the cylinder 10. The solenoid valve 38 is opened, allowing the hydraulic oil in the cavity 33 to be transported to the first hollow elastic element 31 through the solenoid valve 38 and the connecting channel 37. The expansion of the first hollow elastic element 31 further increases the degree of compression contact between the first sealing ring 27, the second sealing ring 28, the third sealing ring 29 and the inner wall of the cylinder 10, so as to further improve the sealing effect of the piston sealing assembly 21.

[0030] When the piston sealing assembly 21 compresses the hydraulic oil, it provides a high sealing effect, and when the piston sealing assembly 21 resets, it provides a normal sealing effect, reducing the high-pressure movement time of the piston sealing assembly 21 and reducing the degree of wear of the piston sealing assembly 21.

[0031] Preferred, such as Figure 6 , Figure 14 As shown, the piston component 23 has a cavity 33 in the middle. The piston rod 11 slides in the cylinder 10. One end of the piston rod 11 is fixedly connected to the piston component 23. The second rubber ring 26 slides in contact with the annular groove 25. The cross-section of one side wall of the first sealing ring 27, the second sealing ring 28, and the third sealing ring 29 is V-shaped. The middle outer wall of the third sealing ring 29 contacts the inner wall of the cylinder 10. The two ends of the second sealing ring 28 contact the inner wall of the cylinder 10. The middle outer wall of the first sealing ring 27 contacts the inner wall of the cylinder 10. The push plate 32 slides in the annular groove 25. The opening direction of the cross-section of the first sealing ring 27 is the same as the opening direction of the cross-section of the third sealing ring 29. The opening direction of the cross-section of the first sealing ring 27 is opposite to the opening direction of the cross-section of the second sealing ring 28.

[0032] Preferred, such as Figure 13-14 As shown, the cavity 33 is connected to several hydraulic cavities 34. The T-shaped push rod 35 has a connecting channel 37 in the middle. The hydraulic cavity 34 is connected to the interior of the first hollow elastic member 31 through the connecting channel 37. One end of the connecting channel 37 is equipped with a solenoid valve 38.

[0033] Preferred, such as Figure 6-8 As shown, the reset assembly 22 includes a second hollow elastic member 39. One side wall of the second hollow elastic member 39 has a V-shaped cross-section, and the interior of the second hollow elastic member 39 is connected to the cavity 33.

[0034] Preferred, such as Figure 6-8 As shown, a frame 40 is provided in the middle of the interior of the second hollow elastic member 39. A mounting plate 45 is fixed at each end of the frame 40. A pressure rod 42 is slidably provided at each end of the frame 40. A damping 43 is connected between the ends of the two pressure rods 42 that are close to each other. A movable plate 41 is fixed at the ends of the two pressure rods 42 that are far apart from each other. A pair of top rods 44 are provided on the side of the two movable plates 41 that are far apart from each other. The two pairs of top rods 44 are respectively connected to the upper and lower ends of the interior of the second hollow elastic member 39.

[0035] Preferred, such as Figure 6-8 As shown, a pair of sliding rods 46 are provided on the side of the two movable plates 41 that are close to each other. The outer wall of each pair of sliding rods 46 is in sliding contact with the mounting plate 45. A pair of compression springs 47 are connected between one side of the mounting plate 45 and one side of the movable plate 41. The compression springs 47 are wrapped around the outer wall of the sliding rods 46. The outer wall of the pressure rod 42 is in sliding contact with the mounting plate 45.

[0036] Preferred, such as Figure 6-8 As shown, the outer wall of the movable plate 41 is provided with a plurality of lever plates 48, and the outer wall of the mounting plate 45 is rotatably connected to one side of the lever plates 48 with a connecting plate 49. One end of the connecting plate 49 is rotatably connected to one end of the mounting plate 45, and the other end of the connecting plate 49 is rotatably connected to one side of the lever plates 48.

[0037] Preferred, such as Figure 1-5 , Figure 9-12 As shown, the generator assembly includes a housing 14, with a generator body 15 mounted on one end of the housing 14 and an oil passage carrier 13 mounted on the other end of the housing 14. The oil passage carrier 13 is connected to the interior of the cylinder block 10.

[0038] Preferred, such as Figure 1-5 , Figure 9-12 As shown, a drive chamber 17 is provided in the middle of the oil circuit carrier 13. A first rotating tube 18 is rotatably provided in the drive chamber 17. A water wheel 19 is provided on the outer wall of the first rotating tube 18. The water wheel 19 rotates in the drive chamber 17. A second rotating tube 20 is provided at the upper end of the first rotating tube 18. The inner wall of the upper end of the second rotating tube 20 is in spline contact with the output end of the generator body 15. An overflow pipe 16 is provided on the upper side of the oil circuit carrier 13. The overflow pipe 16 covers the outside of the second rotating tube 20.

[0039] Preferred, such as Figure 11-12As shown, the piston rod 11 has a housing 12 at one end away from the cylinder 10, and the outer wall of the cylinder 10 slides in contact with the inner wall of the housing 12.

[0040] Specific usage of this invention: When the vehicle brakes, the vehicle's drive motor reverses or transmits kinetic energy through a transmission device to the hydraulic cylinder assembly in the vehicle's brake energy recovery hydraulic system. The piston rod 11 in the hydraulic cylinder assembly moves under pressure, and this movement within the cylinder body 10 drives the piston sealing assembly 21 to move. The piston sealing assembly 21 compresses the hydraulic oil, converting mechanical energy into hydraulic energy. At this time, the cylinder body 10 is connected to the oil circuit carrier 13, allowing high-pressure oil to enter the drive chamber 17. The flow of the high-pressure oil drives the water turbine 19 and the first rotating pipe 18 to rotate. The rotation of the first rotating pipe 18 drives the rotation of the second rotating pipe 20. The rotation of the second rotating pipe 20 drives the output end of the generator body 15 to rotate, generating electrical energy. The generator body 15 converts hydraulic energy into electrical energy. After rectification and voltage stabilization, the electrical energy is stored in a battery or supercapacitor for subsequent vehicle acceleration or auxiliary drive, thus realizing vehicle brake energy recovery.

[0041] Meanwhile, as the piston rod 11 drives the piston sealing assembly 21 to move within the cylinder 10, the piston sealing assembly 21 is prone to wear under long-term high pressure and high-speed movement; and the sealing effect of the piston seal is limited, easily leading to hydraulic oil leakage. First, the outer walls of the upper and lower ends of the first rubber ring 24 slide in contact with the inner wall of the cylinder 10, thus achieving a double sealing effect for the piston sealing assembly 21. Then, the outer wall of the middle part of one first sealing ring 27 and the two ends of the two second sealing rings 28 slide in contact with the interior of the cylinder 10, achieving a multiple sealing effect for the piston sealing assembly 21 and preventing hydraulic oil overflow. Specifically, the two ends of the second sealing ring 28 are pressed against the middle of the first sealing ring 27 and the annular elastic element 30, ensuring that both ends of the second sealing ring 28 are in full contact with the inner wall of the cylinder 10, thereby enabling the piston sealing assembly 21 to achieve a multiple sealing effect. Finally, the outer wall of the middle part of the third sealing ring 29 slides into contact with the inner wall of the cylinder 10, and the annular elastic element 30 and the outer wall of the middle part of the first sealing ring 27 abut against the two ends of the second sealing ring 28, so that the two ends of the second sealing ring 28 and the middle part of the third sealing ring 29 can fully contact the inner wall of the cylinder 10, thereby greatly improving the multiple sealing effect of the piston sealing assembly 21.

[0042] Next, the piston rod 11 drives the piston sealing assembly 21 to move within the cylinder 10. This movement compresses the reset assembly 22, compressing the second hollow elastic element 39 within the reset assembly 22. This compression causes the hydraulic oil within the second hollow elastic element 39 to be transported to the cavity 33, which in turn is transported to several hydraulic chambers 34. The hydraulic oil then pushes the T-shaped push rod 35 and push plate 32 radially outward. This radial outward movement of the T-shaped push rod 35 and push plate 32 pushes the inner wall of the second rubber ring 26, reducing the distance between the outer wall of the second rubber ring 26 and the inner wall of the cylinder 10. This increases the pressure contact between the first sealing ring 27, the second sealing ring 28, the third sealing ring 29 and the inner wall of the cylinder 10, thereby improving the sealing effect of the piston sealing assembly 21. The outer wall of the piston sealing assembly 21 is in full contact with the inner wall of the cylinder 10. The solenoid valve 38 opens, allowing hydraulic oil in the cavity 33 to be transported through the solenoid valve 38 and connecting channel 37 to the first hollow elastic element 31. The expansion of the first hollow elastic element 31 further increases the pressure contact between the first sealing ring 27, the second sealing ring 28, the third sealing ring 29 and the inner wall of the cylinder 10, thereby further improving the sealing effect of the piston sealing assembly 21. During the reset movement of the piston sealing assembly 21, the T-shaped push rod 35 can be moved and reset under the action of the spring 36. The hydraulic oil in the first hollow elastic element 31 flows back to the cavity 33 through the connecting channel 37 and the solenoid valve 38, thus restoring the sealing effect of the piston sealing assembly 21, reducing the high-pressure movement time of the piston sealing assembly 21, thereby reducing the wear of the piston sealing assembly 21, extending its service life, and reducing the possibility of hydraulic oil leakage.

[0043] Then, after the outer wall of the piston sealing assembly 21 fully contacts the inner wall of the cylinder 10, the piston sealing assembly 21 moves downward and compresses and deforms the reset assembly 22. The second hollow elastic element 39 in the reset assembly 22 is compressed and deformed by the bottom of the cylinder 10 and the piston sealing assembly 21, and the two pairs of push rods 44 push the two movable plates 41 closer to each other. The two movable plates 41 move closer to each other, which drives the two pressure rods 42 to move closer to each other. The two pressure rods 42 move closer to each other and compress the damper 43 to generate elastic force. The movement of the movable plates 41 drives the two slide rods 46 to move. The movement of the movable plates 41 cooperates with the mounting plate 45 to be relatively fixed, thereby compressing the two compression springs 47 to generate elastic force. In order to ensure that the piston sealing assembly 21 can quickly reset under low pressure or zero pressure under the action of the elastic force of the damper 43 and the elastic force of the two pairs of compression springs 47.

[0044] Finally, due to the V-shaped cross-section of one side wall of the second hollow elastic element 39, the second hollow elastic element 39 is compressed and deformed. Utilizing the cross-sectional shape of the second hollow elastic element 39, its middle portion moves radially outward to squeeze the hydraulic oil, facilitating rapid compression of the hydraulic oil within the cylinder 10. This results in the rapid generation of high-pressure hydraulic oil, improving the conversion of hydraulic energy into electrical energy and enhancing the efficiency of vehicle brake energy recovery. Furthermore, the reduced distance between the movable plate 41 and the mounting plate 45, combined with the support of the two connecting plates 49, allows the two lever plates 48 to swing away from each other, further promoting the radial outward movement of the middle portion of the second hollow elastic element 39 to squeeze the hydraulic oil, further improving the conversion of hydraulic energy into electrical energy. Therefore, the reset assembly 22 not only ensures the reset effect of the piston sealing assembly 21 but also improves the compression effect of the hydraulic oil within the cylinder 10, thereby enhancing the efficiency of vehicle brake energy recovery.

[0045] This invention discloses a vehicle braking energy recovery hydraulic device. Through the arrangement of a first rubber ring 24, the outer walls of the upper and lower ends of the first rubber ring 24 slide in contact with the inner wall of the cylinder 10, thereby achieving a double sealing effect for the piston sealing assembly 21. Furthermore, through the arrangement of a second rubber ring 26, a first sealing ring 27, and a second sealing ring 28, the outer wall of the middle portion of one first sealing ring 27 and the two ends of both second sealing rings 28 slide in contact with the interior of the cylinder 10, achieving a multiple sealing effect for the piston sealing assembly 21 and preventing hydraulic oil leakage. Finally, through the arrangement of a third sealing ring 29 and an annular elastic element 30, the outer wall of the middle portion of the third sealing ring 29 slides in contact with the inner wall of the cylinder 10, and the annular elastic element 30 and the outer wall of the middle portion of the first sealing ring 27 abut against the two ends of the second sealing ring 28, ensuring that the two ends of the second sealing ring 28 and the middle portion of the third sealing ring 29 are fully in contact with the inner wall of the cylinder 10, thus greatly improving the multiple sealing effect of the piston sealing assembly 21.

[0046] This invention discloses a vehicle braking energy recovery hydraulic device. Through the arrangement of a T-shaped push rod 35, a push plate 32, and a cavity 33, the piston sealing assembly 21 moves to compress the reset assembly 22. The second hollow elastic element 39 in the reset assembly 22 is compressed, causing hydraulic oil within the second hollow elastic element 39 to be transported into the cavity 33. The hydraulic oil in the cavity 33 is then transported into several hydraulic chambers 34. The hydraulic oil pushes the T-shaped push rod 35 and push plate 32 radially outward. This radial outward movement of the T-shaped push rod 35 and push plate 32 pushes the inner wall of the second rubber ring 26, reducing the distance between the outer wall of the second rubber ring 26 and the inner wall of the cylinder 10. This increases the pressure contact between the first sealing ring 27, the second sealing ring 28, the third sealing ring 29 and the inner wall of the cylinder 10, thereby improving the sealing effect of the piston sealing assembly 21. Through the connection channel 37, solenoid valve 38, and first hollow elastic element 31, the outer wall of piston sealing assembly 21 is in full contact with the inner wall of cylinder 10. Solenoid valve 38 is opened, allowing hydraulic oil in cavity 33 to be transported to the first hollow elastic element 31 through solenoid valve 38 and connection channel 37. The expansion of the first hollow elastic element 31 further increases the degree of compression contact between the first sealing ring 27, second sealing ring 28, and third sealing ring 29 and the inner wall of cylinder 10, thereby further improving the sealing effect of piston sealing assembly 21. Finally, piston sealing assembly 21 achieves a high sealing effect when compressing hydraulic oil, and performs normal sealing when piston sealing assembly 21 resets, reducing the high-pressure movement time of piston sealing assembly 21 and reducing the degree of wear of piston sealing assembly 21.

[0047] This invention discloses a vehicle braking energy recovery hydraulic device. Through the arrangement of a second hollow elastic element 39, pressure rods 42, damping 43, mounting plate 45, sliding rods 46, and compression springs 47, the second hollow elastic element 39 in the reset assembly 22 is compressed and deformed by the bottom of the cylinder 10 and the piston sealing assembly 21. Two pairs of push rods 44 push two movable plates 41 closer together, which in turn causes the two pressure rods 42 to move closer together. The two pressure rods 42 then compress the damping 43, generating a spring force. The movement of the movable plates 41 causes the two sliding rods 46 to move, and the movable plates 41, in conjunction with the mounting plate 45, remain relatively fixed, thereby compressing the two compression springs 47 and generating a spring force. This ensures that the piston sealing assembly 21 can quickly reset under low or zero pressure conditions, under the combined action of the spring force of the damping 43 and the spring force of the two pairs of compression springs 47. Furthermore, through the arrangement of the second hollow elastic element 39, since the cross-section of one side wall of the second hollow elastic element 39 is a V-shaped structure, the second hollow elastic element 39 is compressed and deformed. Utilizing the cross-sectional shape of the second hollow elastic element 39, the middle part of the second hollow elastic element 39 moves radially outward to compress, thereby facilitating the rapid compression of the hydraulic oil in the cylinder 10, achieving rapid generation of high-pressure hydraulic oil, improving the conversion of hydraulic energy into electrical energy, and thus improving the efficiency of vehicle braking energy recovery. Finally, through the arrangement of the paddle plate 48 and the connecting plate 49, since the distance between the movable plate 41 and the mounting plate 45 is reduced, the two paddle plates 48 can be moved away from each other by the two connecting plates 49, thereby further promoting the radial outward movement of the middle part of the second hollow elastic element 39 to compress the hydraulic oil, further improving the conversion of hydraulic energy into electrical energy. Therefore, the reset assembly 22 can not only ensure the reset effect of the piston sealing assembly 21, but also improve the compression effect of the hydraulic oil in the cylinder 10, thereby improving the efficiency of vehicle braking energy recovery.

[0048] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A vehicle brake energy recovery hydraulic device comprising a hydraulic cylinder assembly and a generator assembly, characterized by: The hydraulic cylinder assembly comprises a cylinder body (10) and a piston rod (11), one end of the piston rod (11) is provided with a piston sealing assembly (21), and a reset assembly (22) is connected between the piston sealing assembly (21) and the inside of the cylinder body (10); The piston sealing assembly (21) comprises a piston piece (23), the outer wall of the piston piece (23) is provided with a first rubber ring (24), the middle of the outer wall of the first rubber ring (24) is provided with an annular groove (25), the second rubber ring (26) is sleeved in the annular groove (25), the outer wall of the second rubber ring (26) is provided with a first sealing ring (27), the outer walls of both ends of the first sealing ring (27) are respectively provided with a second sealing ring (28), the third sealing ring (29) is connected between the outer walls of both ends of the second sealing ring (28), the first hollow elastic piece (31) is arranged between the inner wall of the middle of the first sealing ring (27) and the outer wall of the second rubber ring (26), a plurality of hydraulic cavities (34) are arranged in the inside of the piston piece (23) in an array, the T-shaped push rod (35) is radially slidably arranged in the hydraulic cavity (34), the push plate (32) is arranged at one end of the T-shaped push rod (35), the spring (36) is connected between the other end of the T-shaped push rod (35) and the inside of the hydraulic cavity (34), and the annular elastic piece (30) is connected between the outer walls of both ends of the first sealing ring (27) and one end of the two second sealing rings (28).

2. The hydraulic device for vehicle brake energy recovery according to claim 1, characterized in that: The inside of the piston piece (23) is provided with a cavity (33), the piston rod (11) slides in the cylinder body (10), one end of the piston rod (11) is fixedly connected with the piston piece (23), the second rubber ring (26) is in sliding contact with the annular groove (25), the side wall section of the first sealing ring (27), the second sealing ring (28) and the third sealing ring (29) is in V-shaped structure, and the push plate (32) slides in the annular groove (25).

3. The hydraulic device for vehicle brake energy recovery according to claim 2, characterized in that: The cavity (33) is in communication with a plurality of hydraulic cavities (34), respectively, the inside of the T-shaped push rod (35) is provided with a connecting channel (37), the hydraulic cavity (34) is in communication with the inside of the first hollow elastic piece (31) through the connecting channel (37), and one end of the connecting channel (37) is provided with an electromagnetic valve (38).

4. The hydraulic device for vehicle brake energy recovery according to claim 2, characterized in that: The reset assembly (22) comprises a second hollow elastic piece (39), the side wall section of the second hollow elastic piece (39) is in V-shaped structure, and the inside of the second hollow elastic piece (39) is in communication with the cavity (33).

5. The hydraulic device for vehicle brake energy recovery according to claim 4, characterized in that: The inside of the second hollow elastic piece (39) is provided with a frame (40), both ends of the frame (40) are respectively provided with an installation plate (45), both ends of the frame (40) are respectively provided with a pressing rod (42), the ends of the two pressing rods (42) close to each other are connected with a damper (43), the ends of the two pressing rods (42) away from each other are respectively provided with an activity plate (41), and the sides of the two activity plates (41) away from each other are respectively provided with a pair of jacks (44). The two pairs of jacks (44) are connected with the upper and lower ends of the inside of the second hollow elastic piece (39) respectively.

6. The hydraulic device for vehicle brake energy recovery according to claim 5, characterized in that: The sides of the two activity plates (41) close to each other are respectively provided with a pair of slide rods (46), the outer walls of each pair of slide rods (46) are in sliding contact with the installation plate (45), a pair of compression springs (47) are connected between the side of the installation plate (45) and the side of the activity plate (41), the compression springs (47) are wound on the outer walls of the slide rods (46), and the outer walls of the pressing rods (42) are in sliding contact with the installation plate (45).

7. The hydraulic device for vehicle brake energy recovery according to claim 6, characterized in that: The outer wall of the activity plate (41) is rotatably provided with a plurality of dials (48), the outer wall of the installation plate (45) is rotatably connected with one side of the dial (48) through a connecting plate (49), one end of the connecting plate (49) is rotatably connected with one end of the installation plate (45), and the other end of the connecting plate (49) is rotatably connected with one side of the dial (48).

8. The hydraulic device for vehicle brake energy recovery according to claim 1, characterized in that: The generator assembly comprises a shell (14), one end of the shell (14) is provided with a generator body (15), and the other end of the shell (14) is provided with an oil circuit carrier (13). The oil circuit carrier (13) is in communication with the inside of the cylinder body (10).

9. The hydraulic device for vehicle brake energy recovery according to claim 8, characterized in that: The inside of the oil circuit carrier (13) is provided with a driving cavity (17), the driving cavity (17) is rotatably provided with a first rotating pipe (18), the outer wall of the first rotating pipe (18) is provided with a water wheel (19), the water wheel (19) rotates in the driving cavity (17), the upper end of the first rotating pipe (18) is provided with a second rotating pipe (20), the inner wall of the upper end of the second rotating pipe (20) is in spline fit contact with the output end of the generator body (15), the upper side of the oil circuit carrier (13) is provided with an overflow pipe (16), and the overflow pipe (16) covers the outside of the second rotating pipe (20).

10. The hydraulic apparatus for vehicle brake energy recovery according to claim 1, characterized by: The end of the piston rod (11) away from the cylinder body (10) is provided with an outer shell (12), and the outer wall of the cylinder body (10) is in sliding contact with the inner wall of the outer shell (12).

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