Vehicle brake energy recovery hydraulic device

Abstract

This invention relates to the technical field of hydraulic cylinders and discloses a hydraulic device for vehicle brake energy recovery, including a hydraulic cylinder assembly and a generator assembly. The hydraulic cylinder assembly includes a cylinder body and a piston rod, with a piston sealing assembly at one end of the piston rod. A reset assembly is connected between the piston sealing assembly and the interior of the cylinder body. This invention achieves a high sealing effect when the piston sealing assembly compresses the hydraulic oil, and maintains a normal sealing effect when the piston sealing assembly resets, reducing the high-pressure movement time of the piston sealing assembly and decreasing its wear. The reset assembly not only ensures the reset effect of the piston sealing assembly but also improves the compression effect of the hydraulic oil in the cylinder, thereby improving the efficiency of vehicle brake energy recovery.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field related to hydraulic cylinders, and more particularly relates to a vehicle braking energy recovery hydraulic device. BACKGROUND

[0002] In the vehicle braking energy recovery hydraulic device, the core of recovering braking energy by using an electro-hydraulic cylinder (combined by a hydraulic cylinder and a generator) is to convert the kinetic energy during vehicle braking into hydraulic energy, and further convert the hydraulic energy into electrical energy for storage. When the vehicle brakes, the driving motor reverses or transmits the kinetic energy to the hydraulic cylinder part of the electro-hydraulic cylinder through the transmission device. The piston of the hydraulic cylinder moves under the action of pressure, compresses the hydraulic oil, and converts mechanical energy into hydraulic energy. At this time, the inlet and outlet of the hydraulic cylinder are connected with the hydraulic circuit to form high-pressure oil. The high-pressure oil drives the generator (such as a hydraulic motor type generator) connected with the hydraulic cylinder to rotate, and the generator converts the hydraulic energy into electrical energy. The electrical energy is stored in the battery or super capacitor after rectification and voltage stabilization, and is used for subsequent acceleration or auxiliary driving of the vehicle to realize vehicle braking energy recovery.

[0003] The prior art still has the following defects for lamp explosion-proof:

[0004] In the prior art, the hydraulic cylinder in the vehicle braking energy recovery hydraulic device is prone to wear of the piston seal in the hydraulic cylinder under long-term high pressure and high-speed movement during operation. The sealing effect of the piston seal is limited, and the hydraulic oil is prone to leakage when being extruded under high pressure. This not only affects the stability of the system pressure, but also pollutes the environment and increases the maintenance cost.

[0005] In the prior art, the piston seal in the hydraulic cylinder is usually pushed back to the initial position by the elastic force of a return spring to realize spring-assisted reset 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, and the return spring is too soft to cause insufficient reset, and the return spring is too hard to affect the efficiency of vehicle braking energy recovery.

[0006] Therefore, in view of the above problems, the present application provides a vehicle braking energy recovery hydraulic device to achieve the purpose of being more practical and valuable. SUMMARY

[0007] The present application provides a vehicle braking energy recovery hydraulic device to overcome the above-mentioned defects in the prior art.

[0008] The purpose and effect of the present application are achieved by the following specific technical means:

[0009] The utility model provides a kind of vehicle braking energy recovery hydraulic device, including hydraulic cylinder assembly and generator assembly, the hydraulic cylinder assembly includes cylinder body and piston rod, one end of the piston rod is equipped with piston seal assembly, and reset assembly is connected between the piston seal assembly and the inside of the cylinder body;The piston seal assembly includes piston piece, the outer wall of the piston piece is equipped with first rubber ring, the outer wall of the first rubber ring is equipped with annular groove in middle, the second rubber ring is sleeved in the annular groove, the outer wall of the second rubber ring is equipped with first seal ring, the outer wall of the two ends of the first seal ring is respectively equipped with one second seal ring, the outer wall between the two ends of the second seal ring is connected and equipped with third seal ring, the first hollow elastic piece is equipped between the middle inner wall of the first seal ring and the outer wall of the second rubber ring, the inside of the piston piece is equipped with a plurality of hydraulic cavities in array, T-shaped push rod is slidably arranged in the hydraulic cavity, the one end of the T-shaped push rod is equipped with push plate, and spring is connected between the other end of the T-shaped push rod and the inside of the hydraulic cavity, and one annular elastic piece is connected between the outer wall of the two ends of the first seal ring and one end of the two second seal rings.

[0010] Preferably, the inside of the piston piece is equipped with cavity, the piston rod slides in the cylinder body, one end of the piston rod is fixedly connected with the piston piece, the second rubber ring is in sliding contact with the annular groove, the side wall section of the first seal ring, the second seal ring and the third seal ring is V-shaped structure, the middle outer wall of the third seal ring is in contact with the inner wall of the cylinder body, the two ends of the second seal ring are in contact with the inner wall of the cylinder body, the middle outer wall of the first seal ring is in contact with the inner wall of the cylinder body, the push plate slides in the annular groove, the section opening direction of the first seal ring is the same as that of the third seal ring, and the section opening direction of the first seal ring is opposite to that of the second seal ring.

[0011] Preferably, the cavity is communicated with a plurality of hydraulic cavities respectively, the inside of the T-shaped push rod is equipped with connecting channel in middle, the hydraulic cavities are communicated with the inside of the first hollow elastic piece through the connecting channel, and one end of the connecting channel is equipped with electromagnetic valve.

[0012] Preferably, the reset assembly includes second hollow elastic piece, the side wall section of the second hollow elastic piece is V-shaped structure, and the inside of the second hollow elastic piece is communicated with the cavity.

[0013] Preferably, a frame body is arranged in the interior of the second hollow elastic member, two mounting plates are fixedly arranged at the two ends of the frame body respectively, two pressure rods are slidingly arranged at the two ends of the frame body respectively, a damper is arranged between the ends of the two pressure rods which are close to each other, one movable plate is fixedly arranged at the end of each of the two pressure rods which are away from each other, a pair of jacks are arranged on the sides of the two movable plates which are away from each other, and the two pairs of jacks are connected with the upper and lower ends of the interior of the second hollow elastic member respectively.

[0014] Preferably, a pair of slide rods are arranged on the sides of the two movable plates which are close to each other, the outer walls of the slide rods are in sliding contact with the mounting plates, a pair of compression springs are arranged between the side of the mounting plate and the side of the movable plate, the compression springs are wound around the outer walls of the slide rods, and the outer walls of the pressure rods are in sliding contact with the mounting plates.

[0015] Preferably, a plurality of knobs are rotatably arranged on the outer wall of the movable plate, a connecting plate is rotatably arranged between the outer wall of the mounting plate and the side of the knob, one end of the connecting plate is rotatably connected with one end of the mounting plate, and the other end of the connecting plate is rotatably connected with the side of the knob.

[0016] Preferably, the generator assembly comprises a shell, a generator body is arranged at one end of the shell, and an oil passage carrier is arranged at the other end of the shell and is in communication with the interior of the cylinder body.

[0017] Preferably, a driving cavity is arranged in the interior of the oil passage carrier, a first rotating tube is rotatably arranged in the driving cavity, a water wheel is arranged on the outer wall of the first rotating tube, the water wheel rotates in the driving cavity, a second rotating tube is arranged at the upper end of the first rotating tube, the upper end inner wall of the second rotating tube is in splined fit contact with the output end of the generator body, an overflow pipe is arranged on the upper side of the oil passage carrier, and the overflow pipe covers the outer portion of the second rotating tube.

[0018] Preferably, an outer shell is arranged at the end of the piston rod which is away from the cylinder body, and the outer wall of the cylinder body is in sliding contact with the inner wall of the outer shell.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The hydraulic device for vehicle brake energy recovery of the application, through the setting of the first rubber ring, utilizes the outer wall of the upper and lower ends of the first rubber ring to slide contact with the inner wall of the cylinder body, so that the piston sealing assembly realizes double sealing effect. Then through the setting of the second rubber ring, the first sealing ring and the second sealing ring, the outer wall of the middle part of the first sealing ring and the two ends of the two second sealing rings are all in sliding contact with the inside of the cylinder body, and the piston sealing assembly realizes multiple sealing effect, avoiding the situation of hydraulic oil overflow. Finally, through the setting of the third sealing ring and the annular elastic piece, the outer wall of the middle part of the third sealing ring is in sliding contact with the inner wall of the cylinder body, and the two ends of the second sealing ring are resisted by the outer wall of the middle part of the first sealing ring and the annular elastic piece, so that the two ends of the second sealing ring and the middle part of the third sealing ring are both in full contact with the inner wall of the cylinder body, so as to greatly improve the multiple sealing effect of the piston sealing assembly.

[0021] The hydraulic device for vehicle brake energy recovery of the application, through the setting of the T-shaped push rod, the push plate and the cavity, the piston sealing assembly moves to compress the reset assembly, the second hollow elastic piece in the reset assembly is compressed, so that the hydraulic oil in the second hollow elastic piece is transported into the cavity, and the hydraulic oil in the cavity is transported into the plurality of hydraulic chambers. The hydraulic oil pushes the T-shaped push rod and the push plate to move radially outward, the plurality of T-shaped push rods and push plates push the inner wall of the second rubber ring to move radially outward, so that the distance between the outer wall of the second rubber ring and the inner wall of the cylinder body is reduced, thereby increasing the extrusion contact degree of the first sealing ring, the second sealing ring and the third sealing ring with the inner wall of the cylinder body, and the sealing effect of the piston sealing assembly is improved. Then through the setting of the connecting channel, the electromagnetic valve and the first hollow elastic piece, the outer wall of the piston sealing assembly is in full contact with the inner wall of the cylinder body, the electromagnetic valve is opened, the hydraulic oil in the cavity is transported into the first hollow elastic piece through the electromagnetic valve and the connecting channel, the first hollow elastic piece is expanded, the extrusion contact degree of the first sealing ring, the second sealing ring and the third sealing ring with the inner wall of the cylinder body is further increased, so as to further improve the sealing effect of the piston sealing assembly. Finally, when the piston sealing assembly compresses the hydraulic oil, high sealing effect is realized, when the piston sealing assembly resets, normal sealing effect is realized, the time of high pressure movement of the piston sealing assembly is reduced, and the degree of wear of the piston sealing assembly is reduced.

[0022] The hydraulic device for vehicle brake energy recovery of the application, through the setting of the second hollow elastic member, the pressure rod, the damping, the mounting plate, the sliding rod and the compression spring, the second hollow elastic member in the reset assembly is compressed and deformed by the bottom of the cylinder and the piston sealing assembly, two pairs of jacks are used to push two movable plates to move close to each other, the movement of the two movable plates drives the two pressure rods to move close to each other, and the movement of the two pressure rods to each other compresses the damping to generate elastic force. The movement of the movable plate drives the movement of the two sliding rods, and the movement of the movable plate cooperates with the relative fixation of the mounting plate, so as to compress the two compression springs to generate elastic force. Under the action of the elastic force of the damping and the elastic force of the two pairs of compression springs, the piston sealing assembly is quickly reset in the low pressure or zero pressure state. Through the setting of the second hollow elastic member, since the section of the side wall of the second hollow elastic member is V-shaped structure, the second hollow elastic member is compressed and deformed, and the section shape of the second hollow elastic member is used to move the middle part of the second hollow elastic member to the radial outside for extrusion, so as to quickly extrude the hydraulic oil in the cylinder, realize the quick generation of high pressure hydraulic oil, improve the conversion of hydraulic energy into electric energy, and improve the efficiency of vehicle brake energy recovery. Finally, through the setting of the dial plate and the connecting plate, since the distance between the movable plate and the mounting plate is reduced, the two connecting plates are used to make the two dial plates swing away from each other, so as to further promote the movement of the middle part of the second hollow elastic member to the radial outside to extrude the hydraulic oil, and further improve the conversion of hydraulic energy into electric energy. Therefore, the reset assembly can not only ensure the reset effect of the piston sealing assembly, but also improve the compression effect of the hydraulic oil in the cylinder, so as to improve the efficiency of vehicle brake energy recovery. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] The application will be further described below in combination with the drawings and embodiments.

[0025] Figure 1 It is a first isometric structural schematic diagram of the application;

[0026] Figure 2 It is a second isometric structural schematic diagram of the application;

[0027] Figure 3 It is a first isometric structural schematic diagram of the generator assembly in the application;

[0028] Figure 4 It is a second isometric structural schematic diagram of the generator assembly in the application;

[0029] Figure 5 is a front view structural schematic diagram of the present application;

[0030] Figure 6 is a front view structural schematic diagram of the present application; Figure 5 is a sectional view structural schematic diagram at A-A in the present application;

[0031] Figure 7 is a front view structural schematic diagram of the present application; Figure 6 is a partial enlarged view structural schematic diagram at F in the present application;

[0032] Figure 8 is a sectional view structural schematic diagram of the reset assembly in the present application;

[0033] Figure 9 is a front view structural schematic diagram of the present application; Figure 5 is a sectional view structural schematic diagram at B-B in the present application;

[0034] Figure 10 is a front view structural schematic diagram of the present application; Figure 5 is a sectional view structural schematic diagram at C-C in the present application;

[0035] Figure 11 is a left view structural schematic diagram of the present application;

[0036] Figure 12 is a front view structural schematic diagram of the present application; Figure 11 is a sectional view structural schematic diagram at D-D in the present application;

[0037] Figure 13 is a sectional view structural schematic diagram of the piston sealing assembly in the present application;

[0038] Figure 14 is a front view structural schematic diagram of the present application; Figure 13 is a partial enlarged view structural schematic diagram at G in the present application;

[0039] Figure 15 is a front view structural schematic diagram of the present application; Figure 13 is a sectional view structural schematic diagram at E-E in the present application;

[0040] Figure 16 is a sectional view structural schematic diagram of the rubber ring in the present application.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] Cylinder 10, piston rod 11, shell 12, oil circuit carrier 13, housing 14, generator body 15, overflow pipe 16, drive cavity 17, first rotating pipe 18, water wheel 19, second rotating pipe 20, piston sealing assembly 21, reset assembly 22, piston piece 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 member 30, first hollow elastic member 31, push plate 32, cavity 33, hydraulic chamber 34, T-shaped push rod 35, spring 36, connecting channel 37, electromagnetic valve 38, second hollow elastic member 39, frame 40, movable plate 41, pressing rod 42, damping 43, jacking rod 44, mounting plate 45, sliding rod 46, compression spring 47, push plate 48, connecting plate 49. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0044] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] As Figures 1-16 shown:

[0047] The present application provides a vehicle brake energy recovery hydraulic device embodiment,

[0048] As Figures 1-16As shown, including hydraulic cylinder assembly and generator assembly, hydraulic cylinder assembly includes cylinder body 10 and piston rod 11, one end of piston rod 11 is provided with piston sealing assembly 21, piston sealing assembly 21 and the inside of cylinder body 10 are connected with reset assembly 22; piston sealing assembly 21 includes piston piece 23, the outer wall of piston piece 23 is provided with first rubber ring 24, the outer wall of first rubber ring 24 is provided with annular groove 25, annular groove 25 is provided with second rubber ring 26, the outer wall of second rubber ring 26 is provided with first sealing ring 27, the outer wall of both ends of first sealing ring 27 is respectively provided with one second sealing ring 28, the outer wall between both ends of second sealing ring 28 is connected with third sealing ring 29, the inner wall of the middle part of first sealing ring 27 and the outer wall of second rubber ring 26 are provided with first hollow elastic piece 31, the inside circumference of piston piece 23 is provided with several hydraulic cavities 34, T-shaped push rod 35 is radially slidably arranged in hydraulic cavity 34, one end of T-shaped push rod 35 is provided with push plate 32, the other end of T-shaped push rod 35 and the inside of hydraulic cavity 34 are connected with spring 36, the outer wall of both ends of first sealing ring 27 and one end of two second sealing rings 28 are connected with one annular elastic piece 30.

[0049] In specific implementation, piston sealing assembly 21 moves to compress reset assembly 22, second hollow elastic piece 39 in reset assembly 22 is compressed, so that the hydraulic oil in second hollow elastic piece 39 is transported into cavity 33, and the hydraulic oil in cavity 33 is transported into several hydraulic cavities 34 respectively. The hydraulic oil is used to push T-shaped push rod 35 and push plate 32 to move radially outward, and the radially outward movement of several T-shaped push rods 35 and push plates 32 pushes the inner wall of second rubber ring 26, so that the distance between the outer wall of second rubber ring 26 and the inner wall of cylinder body 10 is reduced, thereby increasing the extrusion contact degree of first sealing ring 27, second sealing ring 28, third sealing ring 29 and the inner wall of cylinder body 10, and the sealing effect of piston sealing assembly 21 can be improved.

[0050] The outer wall of piston sealing assembly 21 is in full contact with the inner wall of cylinder body 10, electromagnetic valve 38 is opened, the hydraulic oil in cavity 33 is transported into first hollow elastic piece 31 through electromagnetic valve 38 and connecting channel 37, and the expansion of first hollow elastic piece 31 further increases the extrusion contact degree of first sealing ring 27, second sealing ring 28, third sealing ring 29 and the inner wall of cylinder body 10, so as to further improve the sealing effect of piston sealing assembly 21.

[0051] When piston sealing assembly 21 compresses the hydraulic oil, high sealing effect is achieved, and when piston sealing assembly 21 resets, normal sealing effect is achieved, the time of high pressure movement of piston sealing assembly 21 is reduced, and the degree of wear of piston sealing assembly 21 is reduced.

[0052] Preferably, as Figure 6 ,Figure 14 As shown in the figure, 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 V-shaped structure, the middle part of the outer wall of the third sealing ring 29 is in contact with the inner wall of the cylinder body 10, the two ends of the second sealing ring 28 are in contact with the inner wall of the cylinder body 10, the middle part of the outer wall of the first sealing ring 27 is in contact with the inner wall of the cylinder body 10, the push plate 32 slides in the annular groove 25, the section opening direction of the first sealing ring 27 is the same as that of the third sealing ring 29, and the section opening direction of the first sealing ring 27 is opposite to that of the second sealing ring 28.

[0053] Preferably, as shown in the figure, Figures 13-14 As shown in the figure, the cavity 33 is in communication with a plurality of hydraulic chambers 34, respectively, the inside of the T-shaped push rod 35 is provided with a connecting channel 37, the hydraulic chamber 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.

[0054] Preferably, as shown in the figure, Figures 6-8 As shown in the figure, the reset assembly 22 comprises a second hollow elastic piece 39, the side wall section of the second hollow elastic piece 39 is V-shaped structure, and the inside of the second hollow elastic piece 39 is in communication with the cavity 33.

[0055] Preferably, as shown in the figure, Figures 6-8 As shown in the figure, the inside of the second hollow elastic piece 39 is provided with a frame 40, one mounting plate 45 is fixedly arranged at each end of the frame 40, one pressure rod 42 is slidingly arranged at each end of the frame 40, the damping 43 is connected between the ends of the two pressure rods 42 which are close to each other, one movable plate 41 is fixedly arranged at each end of the two pressure rods 42 which are away from each other, and one pair of jacks 44 is arranged on the side of the two movable plates 41 which are away from each other, and the two pairs of jacks 44 are connected with the upper and lower ends of the inside of the second hollow elastic piece 39.

[0056] Preferably, as shown in the figure, Figures 6-8 As shown in the figure, one pair of slide rods 46 is arranged on the side of the two movable plates 41 which are close to each other, the outer wall of each pair of slide rods 46 is in sliding contact with the mounting plate 45, a pair of compression springs 47 is connected between the side of the mounting plate 45 and the side of the movable plate 41, the compression spring 47 is wound on the outer wall of the slide rod 46, and the outer wall of the pressure rod 42 is in sliding contact with the mounting plate 45.

[0057] Preferably, as shown in the figure, Figures 6-8As shown, the outer wall of the movable plate 41 is provided with a plurality of push plates 48, the outer wall of the mounting plate 45 is rotatably connected with one side of the push plate 48 and is provided with a connecting plate 49, one end of the connecting plate 49 is rotatably connected with one end of the mounting plate 45, and the other end of the connecting plate 49 is rotatably connected with one side of the push plate 48.

[0058] Preferably, as shown in the drawings, Figures 1-5 , Figures 9-12 As shown, 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 passage carrier 13, which is in communication with the inside of the cylinder body 10.

[0059] Preferably, as shown in the drawings, Figures 1-5 , Figures 9-12 As shown, the inside of the oil passage carrier 13 is provided with a driving cavity 17, the first rotating pipe 18 is rotatably arranged in the driving cavity 17, 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 contact with the output end of the generator body 15, the upper side of the oil passage carrier 13 is provided with an overflow pipe 16, and the overflow pipe 16 covers the outside of the second rotating pipe 20.

[0060] Preferably, as shown in the drawings, Figures 11-12 As shown, the outer shell 12 is arranged at the end of the piston rod 11 away from the cylinder body 10, and the outer wall of the cylinder body 10 is in sliding contact with the inner wall of the outer shell 12.

[0061] The specific use method of the present application is as follows:

[0062] When the vehicle brakes, the driving motor of the vehicle reverses or transmits kinetic energy to the hydraulic cylinder assembly in the vehicle braking energy recovery hydraulic device through the transmission device. The piston rod 11 in the hydraulic cylinder assembly moves under the action of pressure, the piston rod 11 moves in the cylinder body 10 to drive the piston sealing assembly 21 to move, the piston sealing assembly 21 moves to compress the hydraulic oil, and the mechanical energy is converted into hydraulic energy. At this time, the cylinder body 10 is in communication with the oil passage carrier 13, so that the high-pressure oil enters the driving cavity 17, and the flow of the high-pressure oil drives the water wheel 19 and the first rotating pipe 18 to rotate. The rotation of the first rotating pipe 18 drives the second rotating pipe 20 to rotate. The rotation of the second rotating pipe 20 drives the output end of the generator body 15 to rotate, the rotation of the output end of the generator body 15 generates electric energy, and the generator body 15 converts the hydraulic energy into electric energy. The electric energy is stored in the storage battery or the super capacitor after rectification and voltage stabilization, which is used for subsequent acceleration or auxiliary driving of the vehicle, so as to realize the vehicle braking energy recovery.

[0063] Meanwhile, in the process that the piston rod 11 drives the piston sealing assembly 21 to move in the cylinder body 10, the piston sealing assembly 21 is easy to be worn under long-term high pressure and high-speed movement, and the sealing effect of the piston sealing assembly is limited, which is easy to cause hydraulic oil leakage. First, the outer wall of the upper and lower ends of the first rubber ring 24 is in sliding contact with the inner wall of the cylinder body 10, so that the piston sealing assembly 21 realizes double sealing effect. Then, the outer wall of the middle part of the first sealing ring 27 and the two ends of the two second sealing rings 28 are in sliding contact with the inside of the cylinder body 10, so that the piston sealing assembly 21 realizes multiple sealing effect and avoids the situation of hydraulic oil overflow. Among them, the two ends of the second sealing ring 28 are resisted by the middle part of the first sealing ring 27 and the annular elastic element 30, so that the two ends of the second sealing ring 28 are in full contact with the inner wall of the cylinder body 10, so that the piston sealing assembly 21 realizes multiple sealing effect. Finally, the outer wall of the middle part of the third sealing ring 29 is in sliding contact with the inner wall of the cylinder body 10, and the two ends of the second sealing ring 28 are resisted by the annular elastic element 30 and the outer wall of the middle part of the first sealing ring 27, so that the two ends of the second sealing ring 28 and the middle part of the third sealing ring 29 are in full contact with the inner wall of the cylinder body 10, so as to greatly improve the multiple sealing effect of the piston sealing assembly 21.

[0064] Then, the outer wall of the piston sealing assembly 21 is in full contact with the inner wall of the cylinder body 10, and the piston sealing assembly 21 is moved downward to compress the reset assembly 22. The second hollow elastic member 39 in the reset assembly 22 is compressed by the bottom of the cylinder body 10 and the compression deformation of the piston sealing assembly 21. The two movable plates 41 are pushed to move close to each other by the two pairs of jacks 44. The two movable plates 41 move close to each other to drive the two pressure rods 42 to move close to each other, and the two pressure rods 42 move close to each other to compress the dampers 43 to generate elastic force. The movement of the movable plate 41 drives the movement of the two slide rods 46, and the movement of the movable plate 41 cooperates with the relative fixation of the mounting plate 45 to compress the two compression springs 47 to generate elastic force. In order to ensure that the piston sealing assembly 21 is quickly reset under low pressure or zero pressure state under the action of the elastic force of the damper 43 and the elastic force of the two pairs of compression springs 47.

[0065] Then, the outer wall of the piston sealing assembly 21 is in full contact with the inner wall of the cylinder body 10, and the piston sealing assembly 21 is moved downward to compress the reset assembly 22. The second hollow elastic member 39 in the reset assembly 22 is compressed by the bottom of the cylinder body 10 and the compression deformation of the piston sealing assembly 21. The two movable plates 41 are pushed to move close to each other by the two pairs of jacks 44. The two movable plates 41 move close to each other to drive the two pressure rods 42 to move close to each other, and the two pressure rods 42 move close to each other to compress the dampers 43 to generate elastic force. The movement of the movable plate 41 drives the movement of the two slide rods 46, and the movement of the movable plate 41 cooperates with the relative fixation of the mounting plate 45 to compress the two compression springs 47 to generate elastic force. In order to ensure that the piston sealing assembly 21 is quickly reset under low pressure or zero pressure state under the action of the elastic force of the damper 43 and the elastic force of the two pairs of compression springs 47.

[0066] Finally, since the side wall of the second hollow elastic member 39 has a V-shaped cross section, the second hollow elastic member 39 is compressed and deformed, and the middle part of the second hollow elastic member 39 moves radially outward to pressurize the hydraulic oil, so as to quickly pressurize the hydraulic oil in the cylinder 10, quickly generate high-pressure hydraulic oil, improve the conversion of hydraulic energy into electrical energy, and improve the efficiency of vehicle braking energy recovery. And since the distance between the movable plate 41 and the mounting plate 45 is reduced, the two connecting plates 49 can make the two push plates 48 move away from each other, so as to further promote the middle part of the second hollow elastic member 39 to move radially outward to pressurize the hydraulic oil, and further improve 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.

[0067] The hydraulic device for vehicle braking energy recovery of the present application has the following advantages. The first rubber ring 24 is arranged to achieve double sealing of the piston sealing assembly 21 by sliding contact between the outer walls at the upper and lower ends of the first rubber ring 24 and the inner wall of the cylinder 10. The second rubber ring 26, the first sealing ring 27, and the second sealing ring 28 are arranged to achieve multiple sealing of the piston sealing assembly 21 by sliding contact between the middle outer wall of the first sealing ring 27 and the two ends of the second sealing ring 28 and the inner wall of the cylinder 10, thereby preventing hydraulic oil from leaking. The third sealing ring 29 and the annular elastic member 30 are arranged to achieve multiple sealing of the piston sealing assembly 21 by sliding contact between the middle outer wall of the third sealing ring 29 and the inner wall of the cylinder 10, and by the annular elastic member 30 pressing 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 are in full contact with the inner wall of the cylinder 10, thereby greatly improving the multiple sealing effect of the piston sealing assembly 21.

[0068] The application discloses a vehicle brake energy recovery hydraulic device, which is characterized in that the T-shaped push rod 35, the push plate 32 and the cavity 33 are arranged, the piston sealing assembly 21 is arranged to compress the reset assembly 22, the second hollow elastic member 39 in the reset assembly 22 is compressed, the hydraulic oil in the second hollow elastic member 39 is delivered into the cavity 33, and the hydraulic oil in the cavity 33 is delivered into a plurality of hydraulic cavities 34. The T-shaped push rod 35 and the push plate 32 are pushed to move radially outward, a plurality of T-shaped push rods 35 and push plates 32 are pushed to move radially outward and push the inner wall of the second rubber ring 26, the distance between the outer wall of the second rubber ring 26 and the inner wall of the cylinder body 10 is reduced, the extrusion contact degree of the first sealing ring 27, the second sealing ring 28 and the third sealing ring 29 with the inner wall of the cylinder body 10 is increased, and the sealing effect of the piston sealing assembly 21 is improved. The outer wall of the piston sealing assembly 21 is in full contact with the inner wall of the cylinder body 10, the electromagnetic valve 38 is opened, the hydraulic oil in the cavity 33 is delivered into the first hollow elastic member 31 through the electromagnetic valve 38 and the connecting channel 37, the first hollow elastic member 31 is expanded, the extrusion contact degree of the first sealing ring 27, the second sealing ring 28 and the third sealing ring 29 with the inner wall of the cylinder body 10 is further increased, the sealing effect of the piston sealing assembly 21 is further improved, the piston sealing assembly 21 is compressed to have a high sealing effect, the piston sealing assembly 21 has a normal sealing effect when the piston sealing assembly 21 is reset, the time of high-pressure movement of the piston sealing assembly 21 is reduced, and the wear degree of the piston sealing assembly 21 is reduced.

[0069] The hydraulic device for vehicle braking energy recovery of the present application, through the setting of the second hollow elastic element 39, the pressing rod 42, the damping 43, the mounting plate 45, the sliding rod 46 and the compression spring 47, the second hollow elastic element 39 in the reset assembly 22 is compressed and deformed by the bottom of the cylinder body 10 and the piston sealing assembly 21, two pairs of jacks 44 are used to push two movable plates 41 to move close to each other, the two movable plates 41 move close to each other to drive two pressing rods 42 to move close to each other, and the two pressing rods 42 move close to each other to compress the damping 43 to generate elastic force. The movement of the movable plate 41 drives the movement of the two sliding rods 46, and the movable plate 41 moves in cooperation with the mounting plate 45 to be relatively fixed, so as to compress the two compression springs 47 to generate elastic force. Under the action of the elastic force of the damping 43 and the elastic force of the two pairs of compression springs 47, the piston sealing assembly 21 is quickly reset in the low pressure or zero pressure state. Then, through the setting of the second hollow elastic element 39, since the section of the side wall of the second hollow elastic element 39 is in V-shaped structure, the second hollow elastic element 39 is compressed and deformed, and the section shape of the second hollow elastic element 39 is used to make the middle part of the second hollow elastic element 39 move outward in the radial direction for extrusion, so as to quickly extrude the hydraulic oil in the cylinder body 10, realize the quick generation of high-pressure hydraulic oil, improve the conversion of hydraulic energy into electric energy, and be beneficial to improving the efficiency of vehicle braking energy recovery. Finally, through the setting of the lever 48 and the connecting plate 49, since the distance between the movable plate 41 and the mounting plate 45 is reduced, the two levers 48 are driven to move away from each other by the two connecting plates 49, so as to further promote the movement of the middle part of the second hollow elastic element 39 outward in the radial direction to extrude the hydraulic oil, and further improve the conversion of hydraulic energy into electric 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 body 10, so as to improve the efficiency of vehicle braking energy recovery.

[0070] Embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

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 middle inner wall 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 circumference of the inside of the piston piece (23), the T-shaped push rod (35) is radially slidably arranged in the hydraulic cavity (34), the one end of the T-shaped push rod (35) is provided with a push plate (32), 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). 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); 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 communicated with the cavity (33).

2. The hydraulic device for vehicle brake energy recovery according to claim 1, characterized in that: The cavity (33) is communicated with a plurality of hydraulic cavities (34), the inside of the T-shaped push rod (35) is provided with a connecting channel (37), the hydraulic cavity (34) is communicated 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).

3. The hydraulic device for vehicle brake energy recovery according to claim 1, 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 a mounting plate (45), both ends of the frame (40) are respectively provided with a pressing rod (42), the ends of the two pressing rods (42) away from each other are connected with a damper (43), the ends of the two pressing rods (42) away from each other are respectively provided with a movable plate (41), and the sides of the two movable plates (41) away from each other are respectively provided with a pair of jacks (44). Two pairs of the jacks (44) are connected with the upper and lower ends of the inside of the second hollow elastic piece (39) respectively.

4. The hydraulic device for vehicle brake energy recovery according to claim 3, characterized in that: The sides of the two movable 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 mounting plate (45), a pair of compression springs (47) are connected between the side of the mounting plate (45) and the side of the movable 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 mounting plate (45).

5. The hydraulic device for vehicle brake energy recovery according to claim 4, characterized in that: The outer wall of the movable plate (41) is rotatably provided with a plurality of dials (48), the outer wall of the mounting 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 mounting plate (45), and the other end of the connecting plate (49) is rotatably connected with one side of the dial (48).

6. 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).

7. The hydraulic device for vehicle brake energy recovery according to claim 6, 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).

8. The hydraulic device for vehicle brake energy recovery according to claim 1, characterized in that: 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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