Multistage flow amplification type hydraulic brake valve

Abstract

The invention relates to the field of hydraulic brake valves, and discloses a multistage flow amplification type hydraulic brake valve which comprises a brake pedal, a brake pad and a hydraulic brake mechanism arranged between the brake pedal and the brake pad. End plates are arranged on the sides, away from each other, of the two supporting partition plates at the ends, side plates are installed between every two adjacent supporting partition plates and between the supporting partition plates at the ends and the end plates, installation cavities are formed between every two adjacent supporting partition plates and between the supporting partition plates at the ends and the end plates, and single valve body assemblies are installed in the installation cavities; the diameter of the large-diameter hydraulic cavity formed in the valve piece shell is larger than that of the small-diameter hydraulic cavity, single-time flow amplification is achieved, the multiple valve piece shells are connected in series, the purpose of multi-stage flow amplification is achieved, the braking sensitivity is improved, and the braking sensitivity is adjusted according to the number of the valve piece shells connected in series.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic brake valves, specifically a multi-stage flow amplification hydraulic brake valve. Background Technology

[0002] The hydraulic brake valve is a key component of the hydraulic braking system, used to control and regulate the pressure and flow of brake fluid to achieve the vehicle's braking function. Its valve body is connected to the brake pedal and brake pads at both ends. When the brake pedal is depressed, it pushes the input piston, which in turn transmits power through the hydraulic oil inside the valve body, pushing the output piston and thus the output rod. The brake pads are mounted on the end of the output rod, so that after the brake pads move, they press against the wheel, thereby applying friction braking to the wheel. However, the following drawbacks still exist: Different vehicles have different weights, varying inertia, and drivers have different braking habits. When braking, the distance the brake pedal is pressed is generally proportional to the distance the brake pads move, making it difficult to adjust the sensitivity of hydraulic brakes through the valve body, thus making it inconvenient for different vehicles. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a multi-stage flow amplification hydraulic brake valve, which effectively solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage flow amplification hydraulic brake valve, comprising a brake pedal, brake pads, and a hydraulic braking mechanism disposed between the brake pedal and the brake pads. The hydraulic braking mechanism includes multiple support partitions equidistantly arranged from top to bottom. Two end support partitions at the ends are provided with end plates on opposite sides. Side plates are installed between two adjacent support partitions and between the end support partitions and the end plates. Mounting cavities are formed between two adjacent support partitions and between the end support partitions and the end plates. A single valve body assembly is installed in the mounting cavity. A connecting series assembly is installed on the support partition, and limit fixing assemblies are installed at both ends of the support partition. The connecting series assembly is used to connect two adjacent single valve body assemblies in series, and to control the limit fixing assemblies to limit and fix the single valve body assembly. A single valve body assembly includes a valve housing installed in a mounting cavity. The valve housing has a large-diameter hydraulic chamber and a small-diameter hydraulic chamber inside. The diameter of the large-diameter hydraulic chamber is larger than that of the small-diameter hydraulic chamber. The large-diameter hydraulic chamber contains a power input component, and the small-diameter hydraulic chamber contains a power output component. A connecting pipe is installed between the large-diameter hydraulic chamber and the small-diameter hydraulic chamber, and a check valve is installed inside the connecting pipe.

[0005] Preferably, the power input component includes a first piston plate movably installed inside the large-diameter hydraulic chamber, an input rod fixedly installed on the side of the first piston plate away from the small-diameter hydraulic chamber, a first spring fixedly installed on the side of the first piston plate near the small-diameter hydraulic chamber, one end of the first spring being fixedly connected to the inner wall of the end of the large-diameter hydraulic chamber, and a pressure relief and return component installed on the side of the first piston plate near the small-diameter hydraulic chamber.

[0006] Preferably, the power output component includes a second piston plate movably installed inside the small-diameter hydraulic chamber, an output rod is installed on the side of the second piston plate away from the large-diameter hydraulic chamber, a second spring is installed on the side of the second piston plate away from the large-diameter hydraulic chamber, one end of the second spring is fixedly connected to the inner wall of the end of the small-diameter hydraulic chamber, and a connecting flange is installed on the end of the input rod and the end of the output rod.

[0007] Preferably, the pressure relief and return component includes an internal tube fixedly installed on the end of the first piston plate near the small-diameter hydraulic chamber. The end of the internal tube near the first piston plate has a first through hole in the circumferential direction. An external tube is sleeved on the outside of the internal tube. One end of the external tube is inserted into the interior of the small-diameter hydraulic chamber. An end cylinder is installed on one end of the external tube. A second through hole is opened in the circumferential direction of the end cylinder. A retaining ring protrusion is installed on one end of the internal tube. The retaining ring protrusion is located inside the end cylinder and on the side of the second through hole near the large-diameter hydraulic chamber.

[0008] Preferably, the connecting series assembly includes a rotating groove formed inside the supporting partition, a rotating shaft rotatably mounted inside the rotating groove, and connecting plates mounted at both ends of the rotating shaft. The two connecting plates are arranged in opposite directions, and U-shaped frames are mounted at the ends of the connecting plates. One U-shaped frame is mounted on the outside of the input rod on the upper valve housing, and the other U-shaped frame is mounted on the outside of the output rod on the lower valve housing. Two limiting plates are mounted on both the input rod and the output rod, and the U-shaped frame is positioned between the two limiting plates.

[0009] Preferably, the input rod has a groove, a limiting plate is slidably installed inside the groove, a slider is installed at the end of the limiting plate near the connecting plate, the slider is slidably installed inside the slide groove, the slide groove is opened inside the connecting plate, and a third spring is symmetrically installed on the side of the slider away from the U-shaped frame, one end of the third spring is fixedly connected to the inner wall of the end of the slide groove.

[0010] Preferably, the limiting and fixing assembly includes a fixing cylinder symmetrically installed at both ends of the supporting partition. The fixing cylinder is coaxially arranged with the rotating groove. There are two limiting arc grooves symmetrically starting on the outer side of the fixing cylinder. A rotating ring is rotatably installed on the inner side of the fixing cylinder. Two limiting blocks are symmetrically installed on the outer side of the rotating ring. The two limiting blocks are slidably installed on the inner side of the two limiting arc grooves, on the rotating ring near the output rod. One of the limiting blocks is provided with an auxiliary clamping component.

[0011] Preferably, two guide blocks are symmetrically installed on the inner side of the rotating ring, and two guide grooves are symmetrically opened on the outer wall of the rotating shaft. The two guide blocks are slidably connected to the two guide grooves respectively, and the guide blocks correspond one-to-one with the limiting blocks.

[0012] Preferably, the auxiliary clamping component includes a limiting cylinder fixedly installed at the end of the limiting block. The limiting cylinder has an end groove at one end near the supporting partition. The limiting block has a movable groove inside, which communicates with the inner cavity of the limiting cylinder. A pressure-bearing piston plate is movably installed inside the limiting cylinder. A clamping block is installed on the side of the pressure-bearing piston plate near the supporting partition. The clamping block is located inside the end groove. A piston block is movably installed inside the movable groove.

[0013] Preferably, a connecting frame is installed on the side of the piston block away from the limiting cylinder, and a limiting groove is opened inside the corresponding guide block. A limiting block is rotatably installed inside the limiting groove. A screw is fixedly installed on the side of the limiting block near the limiting stop. The screw is threadedly connected to the connecting frame. A gear is installed on the other side of the limiting block. The gear is located on the side of the guide block away from the limiting stop. A toothed plate is meshed on the outside of the gear. The toothed plate is installed on the side wall of the guide groove along its length.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the diameter of the large-diameter hydraulic chamber inside the valve housing is larger than the diameter of the small-diameter hydraulic chamber, so that the output movement distance of the output rod is greater than the input movement distance of the input rod, thereby achieving single-stage flow amplification. Furthermore, multiple valve housings are connected in series through a rotating shaft to achieve multi-stage flow amplification, thereby improving braking sensitivity. The braking sensitivity can be adjusted by the number of valve housings connected in series. 2. This invention uses multiple mounting cavities from top to bottom to install multiple valve housings, and connects them in series via a rotating shaft on a support partition. This avoids connecting multiple valve housings in series along the length direction, saving space occupied by the multi-stage flow amplification hydraulic brake valve. It is practical and convenient, and the number of valve housings connected in series can be adjusted without disassembling the valve housings. 3. In this invention, when the rotating shaft rotates, the two U-shaped frames are connected to the input rod on the upper valve housing and the output rod on the lower valve housing respectively, so that the two adjacent valve housings are connected in series. At the same time, the rotating ring is driven to rotate through the guide groove and the guide block, so that the limiting block can limit and fix the valve housing, saving the fixing time of the valve housing and facilitating installation. 4. In this invention, the limiting cylinder on the rotating ring near the output rod moves to the top of the rotating ring, limiting the valve housing near the output rod. When the rotating shaft moves, the screw is driven to rotate by the toothed plate and gear, causing the piston block to move and increasing the air pressure on the side of the pressurized piston plate, thereby achieving auxiliary pressing on the valve housing near the output rod to resist the pressure effect of the first spring, the second spring and the hydraulic oil on the valve housing. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the multi-stage flow amplification hydraulic brake valve structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the valve housing of the present invention; Figure 3 This is a schematic diagram of the structure of a single valve body assembly of the present invention; Figure 4 This is a schematic diagram of the pressure relief and return flow component of the present invention; Figure 5 This is a schematic diagram of the supporting partition structure of the present invention; Figure 6 This is a schematic diagram of the connected series component structure of the present invention; Figure 7 This is a schematic diagram of the limiting and fixing component structure of the present invention; Figure 8 This is a schematic diagram of the auxiliary clamping component structure of the present invention; In the diagram: 1. Support partition; 2. End plate; 3. Side plate; 4. Single valve body assembly; 401. Valve housing; 402. Large-diameter hydraulic chamber; 403. Small-diameter hydraulic chamber; 404. First piston plate; 405. Input rod; 406. First spring; 407. Pressure relief and return component; 4071. Internal tube; 4072. First through hole; 4073. External tube; 4074. End cylinder; 4075. Second through hole; 4076. Stop block; 408. Second piston plate; 409. Output rod; 410. Second spring; 411. Connecting pipe; 412. Check valve; 5. Connecting series assembly; 501. Rotating groove; 502. Rotating shaft; 503. Connecting plate; 504. 505. U-shaped frame; 506. Plate groove; 507. Limiting plate; 508. Slider; 509. Slide groove; 510. Third spring; 6. Limiting plate; 6. Limiting and fixing assembly; 601. Fixing cylinder; 602. Limiting arc groove; 603. Rotating ring; 604. Guide block; 605. Limiting stop block; 606. Guide groove; 607. Auxiliary clamping component; 6071. Limiting cylinder; 6072. End groove; 6073. Movable groove; 6074. Pressurized piston plate; 6075. Clamping block; 6076. Piston block; 6077. Connecting frame; 6078. Limiting rotating groove; 6079. Limiting rotating block; 60710. Screw; 60711. Gear; 60712. Tooth plate. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1, by Figures 1-8 The present invention relates to a multi-stage flow amplification hydraulic brake valve, comprising a brake pedal, brake pads, and a hydraulic braking mechanism disposed between the brake pedal and the brake pads. The hydraulic braking mechanism includes a plurality of support partitions 1 arranged equidistantly from top to bottom. Two end support partitions 1 are provided with end plates 2 on opposite sides of each other. Side plates 3 are installed between two adjacent support partitions 1 and between the end support partitions 1 and the end plates 2. Mounting cavities are formed between two adjacent support partitions 1 and between the end support partitions 1 and the end plates 2. A single valve body assembly 4 is installed in the mounting cavity. The plurality of single valve body assemblies 4 are arranged in series to form a multi-stage flow amplification hydraulic brake valve.

[0019] A connecting series assembly 5 is installed on the support partition 1. Limiting and fixing assemblies 6 are installed at both ends of the support partition 1. The connecting series assembly 5 is used to connect two adjacent single valve body assemblies 4 in series. In this way, multiple single valve body assemblies 4 can be connected in series through multiple connecting series assemblies 5, and the number of single valve body assemblies 4 connected in series can be controlled. The limiting and fixing assemblies 6 are used to limit and fix the single valve body assembly 4.

[0020] The single valve body assembly 4 includes a valve housing 401 installed in the mounting cavity. The valve housing 401 has a large-diameter hydraulic chamber 402 and a small-diameter hydraulic chamber 403 inside. The diameter of the large-diameter hydraulic chamber 402 is larger than the diameter of the small-diameter hydraulic chamber 403. The large-diameter hydraulic chamber 402 has a power input component inside, and the small-diameter hydraulic chamber 403 has a power output component inside. A connecting pipe 411 is installed between the large-diameter hydraulic chamber 402 and the small-diameter hydraulic chamber 403. A one-way valve 412 is installed inside the connecting pipe 411.

[0021] The power input component includes a first piston plate 404 movably installed inside the large-diameter hydraulic chamber 402. An input rod 405 is fixedly installed on the side of the first piston plate 404 away from the small-diameter hydraulic chamber 403. A first spring 406 is fixedly installed on the side of the first piston plate 404 near the small-diameter hydraulic chamber 403. One end of the first spring 406 is fixedly connected to the inner wall of the end of the large-diameter hydraulic chamber 402. A pressure relief and return component 407 is installed on the side of the first piston plate 404 near the small-diameter hydraulic chamber 403.

[0022] The power output component includes a second piston plate 408 movably installed inside the small-diameter hydraulic chamber 403. An output rod 409 is installed on the side of the second piston plate 408 away from the large-diameter hydraulic chamber 402. A second spring 410 is installed on the side of the second piston plate 408 away from the large-diameter hydraulic chamber 402. One end of the second spring 410 is fixedly connected to the inner wall of the end of the small-diameter hydraulic chamber 403. The diameter of the large-diameter hydraulic chamber 402 provided in the valve housing 401 is larger than the diameter of the small-diameter hydraulic chamber 403, so that the output movement distance of the output rod 409 is greater than the input movement distance of the input rod 405, thereby realizing single flow amplification. Both the end of the input rod 405 and the end of the output rod 409 are equipped with connecting flanges, which are used to connect with the brake pedal and brake pads.

[0023] The pressure relief and return component 407 includes an inner tube 4071 fixedly installed on one end of the first piston plate 404 near the small-diameter hydraulic chamber 403. A first through hole 4072 is circumferentially opened at the end of the inner tube 4071 near the first piston plate 404. An outer tube 4073 is sleeved on the outside of the inner tube 4071. One end of the outer tube 4073 is inserted into the interior of the small-diameter hydraulic chamber 403. An end sleeve 4074 is installed at one end of the outer tube 4073. A second through hole 4075 is circumferentially opened at the end sleeve 4074. One end is equipped with a retaining ring protrusion 4076, which is located inside the end cylinder 4074 and on the side of the second through hole 4075 near the large-diameter hydraulic chamber 402. When braking, the inner tube 4071 moves relative to the outer tube 4073, closing the first through hole 4072 and the second through hole 4075, thereby controlling the flow direction of the hydraulic oil. When retracting, the inner tube 4071 retracts before the outer tube 4073, opening the first through hole 4072 and the second through hole 4075, facilitating the retraction of the hydraulic oil.

[0024] The connecting series assembly 5 includes a rotating groove 501 formed inside the supporting partition 1. A rotating shaft 502 is rotatably mounted inside the rotating groove 501. Multiple valve housings 401 are connected in series via the rotating shaft 502 to achieve multi-stage flow amplification, thereby improving braking sensitivity. The braking sensitivity can be adjusted by the number of valve housings 401 connected in series. Connecting plates 503 are installed at both ends of the rotating shaft 502. The two connecting plates 503 are set in opposite directions. U-shaped brackets 504 are installed at the ends of the connecting plates 503. One U-shaped bracket 504 is installed on the outside of the input rod 405 on the upper valve housing 401, and the other U-shaped bracket 504 is installed on the outside of the output rod 409 on the lower valve housing 401. Two limiting plates 510 are installed on both the input rod 405 and the output rod 409. The U-shaped brackets 504 are limited by the two limiting plates 510. Between 10, a plate groove 505 is provided on the input rod 405. A limiting plate 506 is slidably installed inside the plate groove 505. A slider 507 is installed on the end of the limiting plate 506 near the connecting plate 503. The slider 507 is slidably installed inside the slide groove 508. The slide groove 508 is opened inside the connecting plate 503. A third spring 509 is symmetrically installed on the side of the slider 507 away from the U-shaped frame 504. One end of the third spring 509 is fixedly connected to the inner wall of the end of the slide groove 508. Multiple valve housings 401 are installed from top to bottom in multiple mounting cavities and are connected in series through the rotating shaft 502 on the support partition 1. This avoids multiple valve housings 401 being connected in series along the length direction, saving space occupied by the multi-stage flow amplification hydraulic brake valve. It is practical and convenient. The number of valve housings 401 connected in series can be adjusted without disassembling the valve housings 401.

[0025] The limiting and fixing assembly 6 includes a fixing cylinder 601 symmetrically installed at both ends of the supporting partition 1. The fixing cylinder 601 is coaxially arranged with the rotating groove 501. Two limiting arc grooves 602 are symmetrically started on the outer side of the fixing cylinder 601. A rotating ring 603 is rotatably installed on the inner side of the fixing cylinder 601. Two limiting blocks 605 are symmetrically installed on the outer side of the rotating ring 603. The two limiting blocks 605 are slidably installed on the inner side of the two limiting arc grooves 602, on the rotating ring 603 near the output rod 409. One of the limiting blocks 605 is provided with an auxiliary clamping element 607. Two guide blocks 604 are symmetrically installed on the inner side of the rotating ring 603. The rotating shaft 50 Two guide grooves 606 are symmetrically opened on the outer wall of 2. Two guide blocks 604 are slidably connected to the two guide grooves 606 respectively. The guide blocks 604 correspond one-to-one with the limit blocks 605. When the rotating shaft 502 rotates, the two U-shaped frames 504 are connected to the input rod 405 on the upper valve housing 401 and the output rod 409 on the lower valve housing 401 respectively, so that the two adjacent valve housings 401 are connected in series. At the same time, the rotating ring 603 is driven to rotate through the guide grooves 606 and the guide blocks 604, so that the limit blocks 605 can limit and fix the valve housing 401, saving the fixing time of the valve housing 401 and facilitating installation.

[0026] The auxiliary clamping component 607 includes a limiting cylinder 6071 fixedly installed at the end of the limiting block 605. The limiting cylinder 6071 has an end groove 6072 at one end near the supporting partition 1. The limiting block 605 has a movable groove 6073 inside, which communicates with the inner cavity of the limiting cylinder 6071. A pressure-bearing piston plate 6074 is movably installed inside the limiting cylinder 6071. A clamping block 6075 is installed on the side of the pressure-bearing piston plate 6074 near the supporting partition 1. The clamping block 6075 is located inside the end groove 6072. A piston block 6076 is movably installed inside the movable groove 6073. A connecting bracket 6077 is installed on the side of the piston block 6076 away from the limiting cylinder 6071. A limiting groove 6078 is formed inside the corresponding guide block 604. A limiting block 6079 is rotatably installed inside the limiting groove 6078. A screw 60710 is fixedly installed on the side of the limiting block 6079 near the limiting stop 605. Rod 60710 is threadedly connected to connecting bracket 6077. Gear 60711 is installed on the other side of limiting rotating block 6079. Gear 60711 is located on the side of guide block 604 away from limiting stop block 605. Gear 60711 is meshed with toothed plate 60712 on its outer side. Toothed plate 60712 is installed on the side wall of guide groove 606 along its length. Limiting cylinder 6071 on rotating ring 603 near output rod 409 moves to above rotating ring 603, and moves upward. The valve housing 401 is limited at the end near the output rod 409. When the rotating shaft 502 moves, the screw 60710 is driven to rotate through the toothed plate 60712 and the gear 60711, which causes the piston block 6076 to move, resulting in an increase in air pressure on the side of the pressurized piston plate 6074. This achieves auxiliary pressing on the end of the valve housing 401 near the output rod 409, which is used to resist the pressure effect of the first spring 406, the second spring 410 and the hydraulic oil on the valve housing 401.

[0027] Working principle: During assembly, multiple valve housings 401 are installed in their respective mounting cavities. Then, each rotating shaft 502 is rotated so that two U-shaped frames 504 are installed on the outside of the input rod 405 on the upper valve housing 401 and the outside of the output rod 409 on the lower valve housing 401, respectively. During installation, the limiting plate 506 needs to be pulled outward to open the opening of the U-shaped frame 504. After the input rod 405 is installed between the two limiting plates 510, the limiting plate 506 moves back under the elastic force of the third spring 509, closing the opening of the U-shaped frame 504, thereby fixing the rotating shaft 502 to the input rod 405 and the output rod 409. In its original state, the two limiting blocks 605 on the rotating ring 603 are set in a horizontal state, while the guide block 604 is slidably connected to the guide groove 606 on the rotating shaft 502. After the rotating shaft 502 rotates, it drives the rotating ring 603 to rotate, so that the rotating ring 603 rotates to a vertical state, so that the limiting blocks 605 can limit the end of the valve housing 401, thereby completing the limiting and fixing of the valve housing 401. When each rotating shaft 502 is connected to the input rod 405 on the upper valve housing 401 and the output rod 409 on the lower valve housing 401 respectively, the valve housings 401 are arranged in series. The brake pedal is mounted on the end of the input rod 405 on the lowest valve housing 401, and the brake pad is mounted on the end of the output rod 409 on the highest valve housing 401. When the brake pedal is depressed, it pushes the first piston plate 404 inside the lowest valve housing 401 to move. After moving, the inner tube 4071 moves relative to the outer tube 4073, causing the outer tube 4073 to move relative to the first piston plate 404. One through hole 4072 is closed, while the retaining ring protrusion 4076 closes the second through hole 4075. At this time, the hydraulic oil in the large-diameter hydraulic chamber 402 is forced from the one-way valve 412 into the small-diameter hydraulic chamber 403, thereby pushing the output rod 409 to move outward. Since the diameter of the large-diameter hydraulic chamber 402 is larger than the diameter of the small-diameter hydraulic chamber 403, the flow length is increased. After the lowermost output rod 409 in the series moves outward, it pushes the upper input rod 405 to move through the rotating shaft 502. The flow output of the valve housings 401 connected in series is continuously amplified, thereby improving the hydraulic braking sensitivity, as shown in the following configuration: When the cross-sectional area of ​​the large-diameter hydraulic chamber 402 is twice the cross-sectional area of ​​the small-diameter hydraulic chamber 403, the input rod 405 on the bottom valve housing 401 moves a distance of n, the output rod 409 on the bottom valve housing 401 moves a distance of 2n, then the input rod 405 on the upper valve housing 401 moves a distance of 2n, the output rod 409 on the upper valve housing 401 moves a distance of 4n, and then the output rod 409 on the second upper valve housing 401 moves a distance of 8n, and so on. Thus, as the number of valve housings 401 increases, the hydraulic braking sensitivity increases. After the brake pedal is released, the first piston plate 404 moves back under the force of the first spring 406, while the second piston plate 408 moves back under the force of the second spring 410. When the first piston plate 404 moves back, the inner tube 4071 moves back relative to the outer tube 4073, so that the first through hole 4072 and the second through hole 4075 are opened. At this time, the hydraulic oil that entered the small diameter hydraulic chamber 403 flows back from the inner tube 4071 to the large diameter hydraulic chamber 402. When the rotating ring 603 rotates, the limiting cylinder 6071 on the side of the rotating ring 603 closest to the output rod 409 moves above the rotating ring 603, limiting the valve housing 401 near the output rod 409. As the output rod 409 moves outward, the rotating shaft 502 moves synchronously. During this movement, the toothed plate 60712 meshes with the gear 60711, causing the screw 60710 to rotate continuously. Since the screw 60710 is threadedly connected to the connecting bracket 6077, thus… The piston block 6076 is moved toward the limiting cylinder 6071, causing the air pressure on the side of the pressurized piston plate 6074 to continuously increase. The auxiliary clamping member 607 is set on the side of the valve housing 401 near the output rod 409, thereby improving the limiting support effect on the pressurized end of the valve housing 401 and reducing the pressure effect of the first spring 406, the second spring 410 and the hydraulic oil on the valve housing 401 during braking. The limiting support effect is stronger as the moving distance of the rotating shaft 502 increases.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage flow amplification hydraulic brake valve, comprising a brake pedal, brake pads, and a hydraulic braking mechanism disposed between the brake pedal and the brake pads, characterized in that: The hydraulic braking mechanism includes multiple support partitions (1) arranged equidistantly from top to bottom. Two support partitions (1) at the ends are provided with end plates (2) on opposite sides. Side plates (3) are installed between two adjacent support partitions (1) and between the support partitions (1) and the end plates (2) at the ends. A mounting cavity is formed between two adjacent support partitions (1) and between the support partitions (1) and the end plates (2) at the ends. A single valve body assembly (4) is installed in the mounting cavity. A connecting series assembly (5) is installed on the support partition (1). Limiting and fixing assemblies (6) are installed at both ends of the support partition (1). The connecting series assembly (5) is used to connect two adjacent single valve body assemblies (4) in series and control the limiting and fixing assembly (6) to limit and fix the single valve body assembly (4). The single valve body assembly (4) includes a valve housing (401) installed in the mounting cavity. The valve housing (401) has a large-diameter hydraulic chamber (402) and a small-diameter hydraulic chamber (403) inside. The diameter of the large-diameter hydraulic chamber (402) is larger than the diameter of the small-diameter hydraulic chamber (403). The large-diameter hydraulic chamber (402) has a power input component inside, and the small-diameter hydraulic chamber (403) has a power output component inside. A connecting pipe (411) is installed between the large-diameter hydraulic chamber (402) and the small-diameter hydraulic chamber (403). A check valve (412) is installed inside the connecting pipe (411).

2. The multi-stage flow amplification hydraulic brake valve according to claim 1, characterized in that: The power input component includes a first piston plate (404) movably installed inside the large-diameter hydraulic chamber (402). An input rod (405) is fixedly installed on the side of the first piston plate (404) away from the small-diameter hydraulic chamber (403). A first spring (406) is fixedly installed on the side of the first piston plate (404) close to the small-diameter hydraulic chamber (403). One end of the first spring (406) is fixedly connected to the inner wall of the end of the large-diameter hydraulic chamber (402). A pressure relief return component (407) is installed on the side of the first piston plate (404) close to the small-diameter hydraulic chamber (403).

3. The multi-stage flow amplification hydraulic brake valve according to claim 1, characterized in that: The power output component includes a second piston plate (408) movably installed inside the small-diameter hydraulic chamber (403). An output rod (409) is installed on the side of the second piston plate (408) away from the large-diameter hydraulic chamber (402). A second spring (410) is installed on the side of the second piston plate (408) away from the large-diameter hydraulic chamber (402). One end of the second spring (410) is fixedly connected to the inner wall of the end of the small-diameter hydraulic chamber (403). A connecting flange is installed on the end of the input rod (405) and the end of the output rod (409).

4. A multi-stage flow amplification hydraulic brake valve according to claim 2, characterized in that: The pressure relief and return component (407) includes an internal tube (4071) fixedly installed on the end of the first piston plate (404) near the small-diameter hydraulic chamber (403). The end of the internal tube (4071) near the first piston plate (404) has a first through hole (4072) in the circumferential direction. An external tube (4073) is sleeved on the outside of the internal tube (4071). One end of the external tube (4073) is inserted into the interior of the small-diameter hydraulic chamber (403). An end cylinder (4074) is installed on one end of the external tube (4073). A second through hole (4075) is opened in the circumferential direction of the end cylinder (4074). A retaining ring protrusion (4076) is installed on one end of the internal tube (4071). The retaining ring protrusion (4076) is located inside the end cylinder (4074), and the retaining ring protrusion (4076) is located on the side of the second through hole (4075) near the large-diameter hydraulic chamber (402).

5. A multi-stage flow amplification hydraulic brake valve according to claim 1, characterized in that: The connecting series assembly (5) includes a rotating groove (501) opened inside the supporting partition (1). A rotating shaft (502) is rotatably installed inside the rotating groove (501). A connecting plate (503) is installed at both ends of the rotating shaft (502). The two connecting plates (503) are set in opposite directions. A U-shaped frame (504) is installed at the end of the connecting plate (503). One U-shaped frame (504) is installed on the outside of the input rod (405) on the upper valve housing (401), and the other U-shaped frame (504) is installed on the outside of the output rod (409) on the lower valve housing (401). Two limiting plates (510) are installed on both the input rod (405) and the output rod (409). The U-shaped frame (504) is limited between the two limiting plates (510).

6. A multi-stage flow amplification hydraulic brake valve according to claim 2, characterized in that: The input rod (405) has a slot (505) and a limiting plate (506) is slidably installed inside the slot (505). A slider (507) is installed at one end of the limiting plate (506) near the connecting plate (503). The slider (507) is slidably installed inside the slide groove (508). The slide groove (508) is opened inside the connecting plate (503). A third spring (509) is symmetrically installed on the side of the slider (507) away from the U-shaped frame (504). One end of the third spring (509) is fixedly connected to the inner wall of the end of the slide groove (508).

7. A multi-stage flow amplification hydraulic brake valve according to claim 1, characterized in that: The limiting and fixing assembly (6) includes a fixing cylinder (601) symmetrically installed at both ends of the supporting partition (1). The fixing cylinder (601) is coaxially arranged with the rotating groove (501). There are two limiting arc grooves (602) symmetrically starting on the outer side of the fixing cylinder (601). A rotating ring (603) is rotatably installed on the inner side of the fixing cylinder (601). Two limiting blocks (605) are symmetrically installed on the outer side of the rotating ring (603). The two limiting blocks (605) are slidably installed on the inner side of the two limiting arc grooves (602) and on the rotating ring (603) near the output rod (409). An auxiliary clamping component (607) is provided on one of the limiting blocks (605).

8. A multi-stage flow amplification hydraulic brake valve according to claim 7, characterized in that: Two guide blocks (604) are symmetrically installed on the inner side of the rotating ring (603), and two guide grooves (606) are symmetrically opened on the outer wall of the rotating shaft (502). The two guide blocks (604) are slidably connected to the two guide grooves (606) respectively, and the guide blocks (604) correspond one-to-one with the limit blocks (605).

9. A multi-stage flow amplification hydraulic brake valve according to claim 7, characterized in that: The auxiliary clamping component (607) includes a limiting cylinder (6071) fixedly installed at the end of the limiting block (605). The limiting cylinder (6071) has an end groove (6072) at one end near the supporting partition (1). The limiting block (605) has a movable groove (6073) inside. The movable groove (6073) communicates with the inner cavity of the limiting cylinder (6071). A pressure piston plate (6074) is movably installed inside the limiting cylinder (6071). A clamping block (6075) is installed on the side of the pressure piston plate (6074) near the supporting partition (1). The clamping block (6075) is located inside the end groove (6072). A piston block (6076) is movably installed inside the movable groove (6073).

10. A multi-stage flow amplification hydraulic brake valve according to claim 9, characterized in that: A connecting frame (6077) is installed on the side of the piston block (6076) away from the limiting cylinder (6071). A limiting groove (6078) is opened inside the corresponding guide block (604). A limiting block (6079) is rotatably installed inside the limiting groove (6078). A screw (60710) is fixedly installed on the side of the limiting block (6079) near the limiting stop (605). The screw (60710) is threadedly connected to the connecting frame (6077). A gear (60711) is installed on the other side of the limiting block (6079). The gear (60711) is located on the side of the guide block (604) away from the limiting stop (605). A toothed plate (60712) is meshed on the outside of the gear (60711). The toothed plate (60712) is installed on the side wall of the guide groove (606) in the length direction.

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