Hydraulic brake valve

Abstract

The application discloses a hydraulic brake valve and relates to the related field of hydraulic brake systems.The hydraulic brake valve comprises a valve body, a spring seat assembly, a rubber sleeve, a pedal assembly, a spring seat return spring, a valve core, a valve core return spring, a plug and a valve core displacement detection mechanism.The pedal assembly and the valve core displacement detection mechanism are arranged.The pressure sensor and the resistance displacement meter in the pedal assembly are used for collecting pedal strength and rotation angle in real time.The angle sensor of the valve core displacement detection mechanism is used for converting linear displacement of the valve core into a rotation angle through gear transmission.Comparison is made between the pedal rotation angle theoretical value and the valve core actual displacement value.When the deviation exceeds a threshold value, a fault is determined.The auxiliary return motor drives the gear plate to forcibly lift the valve core through the one-way transmission structure, so that the valve core return failure is avoided, the brake of the automobile is affected, and accidents are caused.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydraulic brake system, and particularly relates to a hydraulic brake valve. BACKGROUND

[0002] The hydraulic brake valve is a core control device of a vehicle hydraulic brake system, and its function is to convert the pedal force of a driver into brake hydraulic pressure, to control the brake fluid flow by adjusting the displacement of a valve core, and to finally realize the accurate regulation and control of the wheel braking torque. The traditional hydraulic brake valve usually comprises a valve body, a valve core and a mechanical transmission mechanism, the valve body is internally provided with an oil inlet, an oil outlet and a valve cavity, the valve core is axially moved in the valve cavity by spring reset, the oil passage opening and closing area is changed, and the pedal stroke is linearly converted into the displacement of the valve core;

[0003] The existing hydraulic brake valve has the following defects:

[0004] The pedal force and the valve core action lack closed-loop verification, there is no early warning mechanism when sudden mechanical failure (such as valve core jam) occurs, the spring is passively reset, when the valve core is jammed due to oil dirt condensation or component deformation, manual disassembly and maintenance are required, the reset process cannot be actively intervened, and there are safety hazards and high maintenance costs. SUMMARY

[0005] Therefore, in order to solve the above problems, the present application provides a hydraulic brake valve.

[0006] The present application is achieved in that a hydraulic brake valve is constructed, which comprises a valve body, a pedal assembly and a valve core displacement detection mechanism, a spring seat assembly is embedded in the middle of the top end of the valve body, a rubber sleeve is sleeved on the outer side of the spring seat assembly, a valve core is vertically arranged in the middle of the valve body, and the top of the valve core is elastically connected with the spring seat reset spring through the valve core reset spring.

[0007] The pedal assembly is installed on the top of the valve body, the valve core displacement detection mechanism is installed on the bottom of the valve body, and the valve core displacement detection mechanism is connected with the bottom of the valve core.

[0008] Preferably, the pedal assembly comprises a pedal, a straight plate, a pressure sensor, a rotating seat, a fixed rotating shaft, a roller and a resistance displacement meter, the pressure sensor is used for detecting the pressure of the pedal, the roller is used for pressing the spring seat assembly, the resistance displacement meter is used for monitoring the rotation angle of the pedal, the pedal is arranged on the top of the straight plate, and the pedal and the straight plate are movably connected at the edges, the pressure sensor is installed between the pedal and the straight plate, the rotating seat is fixed to the left side of the bottom of the straight plate, the left middle part of the rotating seat is rotationally connected with the valve body through a rotating shaft, the bottom right side of the rotating seat is rotationally connected with the roller through a rotating shaft, the bottom left end of the straight plate is rotationally connected with the resistance displacement meter through a rotating shaft, and the other end of the resistance displacement meter is rotationally connected with the valve body through a rotating shaft.

[0009] Preferably, the valve core displacement detection mechanism includes a housing, a connecting rod, a toothed plate, a gear, a transmission shaft, an angle sensor, a one-way transmission structure, an auxiliary reset motor, a movable block, and a toothed plate reset spring. The angle sensor is used to monitor the movement direction and stroke of the valve core. The auxiliary reset motor is used to reset the valve core in case of a fault. The top of the connecting rod is fixedly connected to the valve core, and the bottom end of the connecting rod extends into the housing and is fixedly connected to the toothed plate. The front side of the toothed plate meshes with the gear. The center of the gear is transversely penetrated by the transmission shaft, and the gear is connected to the transmission shaft. The left end of the transmission shaft is connected to the angle sensor via a coupling, and the angle sensor is fixedly installed on the left side wall of the housing. The right end of the transmission shaft is connected to the one-way transmission structure, and the right end of the one-way transmission structure is connected to the output shaft of the auxiliary reset motor. The auxiliary reset motor is installed on the right side wall of the housing.

[0010] Preferably, the connecting rod and the toothed plate are both vertically arranged, and the connecting rod and the toothed plate are arranged in the same vertical line as the valve core.

[0011] Preferably, the bottom end of the toothed plate is fixedly connected to the movable block, and the bottom of the movable block is elastically connected through the bottom end face inside the toothed plate return spring housing.

[0012] Preferably, a limiting block is fixed to the rear side of the toothed plate, and a limiting rod vertically penetrates the inner center of the limiting block, with both the upper and lower ends of the limiting rod fixedly connected to the outer shell.

[0013] Preferably, the unidirectional transmission structure includes a driven frame, a driving plate, an annular plate, a slot, a mounting groove, a slider, a connecting post, and a compression spring. The driving plate is disposed inside the driven frame, and the driven frame does not contact the driving plate. The right edge of the driven frame is fixedly connected to the annular plate. The inner wall of the annular plate has a slot, which is arranged in a circular array on the inner wall of the annular plate. The inner edge of the driving plate has a mounting groove. A slider is disposed inside the mounting groove near the center of the driving plate. The slider is slidably connected to the inner wall of the mounting groove. A connecting post is fixed to the right side of the slider, and the connecting post extends out of the driving plate. The slider is elastically connected to the mounting groove via a compression spring on the side away from the center of the driving plate. The left center of the driven frame is connected to the transmission shaft, and the right center of the driving plate is connected to the output shaft of the auxiliary reset motor.

[0014] Preferably, the right side of the active plate is provided with a sliding groove, the right end of the connecting column extends through the sliding groove, and the connecting column is slidably connected to the sliding groove.

[0015] Preferably, the centers of the driven frame, the driving plate, and the annular plate are arranged in a straight line.

[0016] Preferably, a plug is installed at the bottom of the valve body, the bottom edge of the valve core is elastically connected to the plug through a valve core return spring, and the top of the connecting rod passes through the plug and is fixedly connected to the valve core. The connecting rod and the plug are sealed together, and an oil outlet and an oil inlet are provided on both sides of the valve body.

[0017] The present invention has the following advantages: The present invention provides a hydraulic brake valve through improvements, which, compared with similar devices, have the following improvements:

[0018] The hydraulic brake valve described in this invention incorporates a pedal assembly and a valve core displacement detection mechanism.

[0019] The pedal force and angle are collected in real time by pressure sensors and resistive displacement gauges in the pedal assembly. The valve core displacement detection mechanism converts the linear displacement of the valve core into a rotation angle through toothed plate and gear transmission. The theoretical value of the pedal rotation angle is compared with the actual value of the valve core displacement. When the deviation exceeds the threshold, a fault is determined. The auxiliary reset motor drives the toothed plate to forcefully lift the valve core through a one-way transmission structure to prevent the valve core reset failure, which would affect the vehicle's braking and cause an accident.

[0020] The hydraulic brake valve of the present invention has a one-way transmission structure, which prevents the drive shaft of the auxiliary reset motor from rotating when the gear rotates, and enables the gear to rotate when the auxiliary reset motor is driven, thereby reducing the resistance to the movement of the valve core, and the valve core is reset by means of a toothed plate reset spring. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the pedal assembly structure of the present invention;

[0023] Figure 3 This is the present invention. Figure 2 A magnified view of a portion of area A;

[0024] Figure 4 This is a schematic diagram of the valve core displacement detection mechanism of the present invention;

[0025] Figure 5 This is a partial structural schematic diagram of the valve core displacement detection mechanism of the present invention;

[0026] Figure 6 This is a right view of the toothed plate structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the unidirectional transmission structure of the present invention;

[0028] Figure 8 This is the present invention. Figure 7 A magnified view of a portion of area B;

[0029] Figure 9 This is a side view of the annular plate structure of the present invention;

[0030] Figure 10 This is a right view of the internal structure of the active plate of the present invention.

[0031] The components include: 1. Valve body; 2. Spring seat assembly; 3. Rubber sleeve; 4. Pedal assembly; 5. Spring seat return spring; 6. Valve core; 7. Valve core return spring; 8. Plug; 9. Valve core displacement detection mechanism; 10. Oil outlet; 11. Oil inlet.

[0032] 41. Pedal; 42. Straight plate; 43. Pressure sensor; 44. Rotating base; 45. Fixed rotating shaft; 46. Roller; 47. Resistance displacement gauge;

[0033] 91. Housing; 92. Connecting rod; 93. Gear plate; 94. Gear; 95. Drive shaft; 96. Angle sensor; 97. One-way transmission structure; 98. Auxiliary reset motor; 99. Moving block; 910. Gear plate return spring;

[0034] 931. Limiting block; 932. Limiting rod;

[0035] 971. Driven frame; 972. Active plate; 973. Annular plate; 974. Slot; 975. Mounting slot; 976. Slider; 977. Connecting post; 978. Compression spring. Detailed Implementation

[0036] The following will be combined with the appendix Figure 1 - Appendix Figure 10 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0037] Please see Figure 1 The present invention provides a hydraulic brake valve, comprising a valve body 1, a pedal assembly 4, and a valve core displacement detection mechanism 9. A spring seat assembly 2 is embedded in the middle of the top of the valve body 1, and a rubber sleeve 3 is fitted on the outside of the spring seat assembly 2. A valve core 6 is vertically arranged in the middle of the inner part of the valve body 1, and the top of the valve core 6 is elastically connected to the spring seat return spring 5 through a valve core return spring 7.

[0038] The pedal assembly 4 is installed on the top of the valve body 1, and the valve core displacement detection mechanism 9 is installed on the bottom of the valve body 1, and the valve core displacement detection mechanism 9 is connected to the bottom of the valve core 6.

[0039] A plug 8 is installed at the bottom of the valve body 1. The bottom edge of the valve core 6 is elastically connected to the plug 8 through the valve core return spring 7. The top of the connecting rod 92 passes through the plug 8 and is fixedly connected to the valve core 6. The connecting rod 92 and the plug 8 are sealed together. An oil outlet 10 and an oil inlet 11 are provided on both sides of the valve body 1.

[0040] Please see Figures 2-3 The pedal assembly 4 includes a pedal 41, a straight plate 42, a pressure sensor 43, a rotating seat 44, a fixed rotating shaft 45, a roller 46, and a resistive displacement meter 47. The pressure sensor 43 is used to detect the pressure applied to the pedal 41, the roller 46 is used to press down on the spring seat assembly 2, and the resistive displacement meter 47 is used to monitor the rotation angle of the pedal 41. The pedal 41 is located on the top of the straight plate 42, and the pedal 41 and the straight plate 42 are movably fitted at their edges. The pressure sensor 43 is installed between the pedal 41 and the straight plate 42. The rotating seat 44 is fixed on the bottom left side of the straight plate 42. The middle left side of the rotating seat 44 is rotatably connected to the valve body 1 through a rotating shaft. The right bottom end of the rotating seat 44 is rotatably connected to the roller 46 through a rotating shaft. The bottom left end of the straight plate 42 is rotatably connected to the resistive displacement meter 47 through a rotating shaft, and the other end of the resistive displacement meter 47 is rotatably connected to the valve body 1 through a rotating shaft.

[0041] Please see Figures 4-6 The valve core displacement detection mechanism 9 includes a housing 91, a connecting rod 92, a toothed plate 93, a gear 94, a transmission shaft 95, an angle sensor 96, a one-way transmission structure 97, an auxiliary reset motor 98, a movable block 99, and a toothed plate reset spring 910. The angle sensor 96 is used to monitor the movement direction and stroke of the valve core 6. The auxiliary reset motor 98 is used to reset the valve core 6 in case of a fault. The top of the connecting rod 92 is fixedly connected to the valve core 6, and the bottom end of the connecting rod 92 extends into the housing 91 and is fixedly connected to the toothed plate 93. Next, the front side of the toothed plate 93 meshes with the gear 94. The center of the gear 94 is transversely penetrated by the transmission shaft 95, and the gear 94 is connected to the transmission shaft 95. The left end of the transmission shaft 95 is connected to the angle sensor 96 through a coupling, and the angle sensor 96 is fixedly installed on the left side wall of the housing 91. The right end of the transmission shaft 95 is connected to the one-way transmission structure 97, and the right end of the one-way transmission structure 97 is connected to the output shaft of the auxiliary reset motor 98. The auxiliary reset motor 98 is installed on the right side wall of the housing 91.

[0042] Both the connecting rod 92 and the toothed plate 93 are vertically arranged, and the connecting rod 92 and the toothed plate 93 are arranged in the same vertical line as the valve core 6, so that when the valve core 6 moves vertically, it drives the connecting rod 92 and the toothed plate 93 to move vertically synchronously.

[0043] The bottom end of the toothed plate 93 is fixedly connected to the movable block 99, and the bottom of the movable block 99 is elastically connected through the bottom end face inside the housing 91 of the toothed plate return spring 910. The toothed plate return spring 910 generates elastic potential energy to push the toothed plate 93 to reset, so as to avoid the transmission between the toothed plate 93 and the gear 94 and the transmission between the bevel gears in the one-way transmission structure 97 affecting the reset effect of the valve core return spring 7 on the valve core 6, thereby ensuring the reset effect of the valve core 6.

[0044] A limiting block 931 is fixed to the rear side of the toothed plate 93, and a limiting rod 932 vertically penetrates the inner center of the limiting block 931. Both the upper and lower ends of the limiting rod 932 are fixedly connected to the outer shell 91. The movement trajectory of the limiting block 931 and the toothed plate 93 is restricted by the limiting rod 932 to ensure the meshing effect between the toothed plate 93 and the gear 94.

[0045] Please see Figures 7-10 The unidirectional transmission structure 97 includes a driven frame 971, a driving plate 972, an annular plate 973, a slot 974, a mounting groove 975, a slider 976, a connecting post 977, and a compression spring 978. The driving plate 972 is disposed inside the driven frame 971, and the driven frame 971 and the driving plate 972 do not contact each other. The right edge of the driven frame 971 is fixedly connected to the annular plate 973. The inner wall of the annular plate 973 has slots 974, and the slots 974 are arranged in a ring array on the inner wall of the annular plate 973. The inner edge of the driving plate 972 is located at... An installation slot 975 is provided. Inside the installation slot 975, near the center of the active plate 972, a slider 976 is provided. The slider 976 is slidably connected to the inner wall of the installation slot 975. A connecting post 977 is fixed to the right side of the slider 976 and extends out of the active plate 972. The side of the slider 976 away from the center of the active plate 972 is elastically connected to the installation slot 975 through a compression spring 978. The left end of the driven frame 971 is connected to the drive shaft 95, and the right end of the active plate 972 is connected to the output shaft of the auxiliary reset motor 98.

[0046] The right side of the active plate 972 is provided with a sliding groove, and the right end of the connecting post 977 extends through the sliding groove, and the connecting post 977 is slidably connected to the sliding groove.

[0047] The centers of the driven frame 971, the driving plate 972, and the annular plate 973 are arranged in a straight line. The rotation direction and rotation angle of the transmission shaft 95 are detected by the angle sensor 96, and the movement direction and movement stroke of the valve core 6 are calculated.

[0048] The pressure sensor 43 uses a Honeywell FSS series pressure sensor, which is small in size, highly accurate, and suitable for monitoring the pressure applied to the pedal 41.

[0049] The resistance displacement meter 47 adopts the Bourns 3590 series resistance displacement meter, which has high accuracy and is suitable for monitoring the rotation angle of the pedal 41.

[0050] The angle sensor 96 uses the Bourns 3590S-2-103L model, which has high detection accuracy and can monitor the stroke of the valve core at the 6 mm level.

[0051] The auxiliary reset motor 98 uses a Maxon EC 20 Flat brushless motor, which has a compact structure and small size.

[0052] This invention provides an improved hydraulic brake valve, the working principle of which is as follows;

[0053] First, when the pedal 41 of the pedal assembly 4 is pressed, the pressure sensor 43 between the pedal 41 and the straight plate 42 monitors the pressure on the pedal 41, causing the pedal 41 and the straight plate 42 to drive the rotating seat 44 to rotate clockwise along the fixed rotating shaft 45. When the pedal 41 and the straight plate 42 rotate clockwise, the resistance displacement meter 47 is pulled to extend. The travel of the left end of the straight plate 42 is monitored by the resistance displacement meter 47, and then the rotation angle of the pedal 41 is calculated.

[0054] When the rotating seat 44 rotates clockwise, it presses down on the spring seat assembly 2 through the roller 46. The spring seat assembly 2 presses down on the valve core 6 through the spring seat return spring 5, causing the valve core 6 to move down and connect the oil outlet 10 and the oil inlet 11. The downward movement of the valve core 6 drives the toothed plate 93 to move down through the connecting rod 92. The toothed plate 93 drives the movable block 99 to press down on the toothed plate return spring 910.

[0055] The toothed plate 93 moves down, causing the gear 94 to rotate. The gear 94 drives the transmission shaft 95 to rotate concentrically. The left end of the transmission shaft 95 drives the input shaft of the angle sensor 96 to rotate. The angle sensor 96 monitors the rotation direction and rotation angle of the transmission shaft 95, and then calculates the displacement direction and displacement distance of the valve core 6. The right end of the transmission shaft 95 drives the driven frame 971 to rotate. Since the connecting column 977 is in a retracted state when the driving plate 972 does not rotate, the driven frame 971 does not drive the driving plate 972 to rotate when it rotates.

[0056] Second, when the pressure on the pedal 41 is released, the toothed plate return spring 910 generates elastic potential energy to push the movable block 99, the toothed plate 93 and the connecting rod 92 upward, and the valve core return spring 7 generates elastic potential energy to push the valve core 6 upward to reset. At the same time, the spring seat return spring 5 generates elastic potential energy to push the spring seat assembly 2 upward to reset. The spring seat assembly 2 moves upward and lifts the roller 46, so that the pedal 41, the straight plate 42 and the rotating seat 44 rotate counterclockwise along the fixed rotating shaft 45 to reset, and the resistance displacement meter 47 retracts.

[0057] Third, the pressure state of the pedal 41 is monitored by the pressure sensor 43, the rotation angle of the pedal 41 is monitored by the resistance displacement meter 47, and the moving direction and moving distance of the valve core 6 are monitored by the angle sensor 96.

[0058] When pedal 41 is pressed, the distance that valve core 6 should move is calculated based on the rotation angle of pedal 41, and compared with the movement distance of valve core 6 detected by angle sensor 96 to determine whether the movement distance of valve core 6 is correct. When pedal 41 is pressed, pressure sensor 43 detects the applied pressure of pedal 41, and resistive displacement meter 47 detects the rotation of pedal 41. However, if angle sensor 96 does not detect the rotation of drive shaft 95 or the detected rotation angle of drive shaft 95 exceeds the preset value range of the distance that valve core 6 should move, it is determined that valve core 6 or valve core return spring 7 is faulty, and troubleshooting is performed on valve core 6 and valve core return spring 7.

[0059] When the pressure applied to pedal 41 is released, pressure sensor 43 does not detect the pressure applied to pedal 41, and resistance displacement meter 47 detects that pedal 41 rotates to the reset state. However, angle sensor 96 does not detect that valve core 6 moves upward or does not move upward to the reset state. At this time, it is determined that valve core 6, valve core reset spring 7 or toothed plate reset spring 910 are faulty, which prevents valve core 6 from moving upward effectively. Since the preload of spring seat reset spring 5 can lift spring seat assembly 2 to reset when valve core 6 cannot move upward, the detection data of pressure sensor 43 and resistance displacement meter 47 are normal.

[0060] When the valve core 6 fails to reset, the auxiliary reset motor 98 generates power to drive the active plate 972 to rotate through the output shaft. When the active plate 972 rotates, it generates centrifugal force, causing the slider 976 inside the active plate 972 to squeeze the compression spring 978 and move outward. The slider 976 drives the connecting column 977 to move outward and engage with the slot 974 on the inner wall of the annular plate 973, causing the active plate 972 to rotate and drive the annular plate 973 and the driven frame 971 to rotate. The driven frame 971 drives the gear 94 to rotate in the direction of valve core 6 reset through the transmission shaft 95. The rotation of the gear 94 drives the toothed plate 93 to move upward. The upward movement of the toothed plate 93 drives the valve core 6 to move upward through the connecting rod 92, thus resetting the valve core 6. This prevents the valve core 6 from failing to reset, which would keep the oil outlet 10 and the oil inlet 11 connected and cause a safety hazard.

[0061] When the pressure applied to pedal 41 is released, pressure sensor 43 does not detect the applied pressure of pedal 41, angle sensor 96 detects that valve core 6 moves up to the reset state, but resistance displacement meter 47 detects that pedal 41 rotates to the reset state. At this time, it is determined that the spring seat reset spring 5 or pedal assembly 4 is faulty. Since damage to the fixed rotating shaft 45 of pedal assembly 4 can also cause pedal 41 to fail to reset, it is necessary to troubleshoot the spring seat reset spring 5 or pedal assembly 4.

[0062] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic brake valve, comprising a valve body (1), wherein a spring seat assembly (2) is embedded in the middle of the top of the valve body (1), a rubber sleeve (3) is fitted on the outer side of the spring seat assembly (2), and a valve core (6) is vertically arranged in the middle of the inner part of the valve body (1), wherein the top of the valve core (6) is elastically connected to the spring seat return spring (5) through a valve core return spring (7); characterized in that: It also includes a pedal assembly (4) and a valve core displacement detection mechanism (9), the pedal assembly (4) being installed on the top of the valve body (1), the valve core displacement detection mechanism (9) being installed on the bottom of the valve body (1), and the valve core displacement detection mechanism (9) being connected to the bottom of the valve core (6); The pedal assembly (4) includes a pedal (41), a pressure sensor (43), a roller (46), and a resistive displacement meter (47). The pressure sensor (43) is used to detect the pressure applied to the pedal (41). The roller (46) is used to press down on the spring seat assembly (2). The resistive displacement meter (47) is used to monitor the rotation angle of the pedal (41). The valve core displacement detection mechanism (9) includes an angle sensor (96) and an auxiliary reset motor (98). The angle sensor (96) is used to monitor the moving direction and moving stroke of the valve core (6). The auxiliary reset motor (98) is used to reset the valve core (6) in a faulty state. The valve core displacement detection mechanism (9) also includes a housing (91), a connecting rod (92), a toothed plate (93), a gear (94), a transmission shaft (95), and a one-way transmission structure (97). The top of the connecting rod (92) is fixedly connected to the valve core (6), and the bottom end of the connecting rod (92) extends into the housing (91) and is fixedly connected to the toothed plate (93). The front side of the toothed plate (93) meshes with the gear (94). The center of the gear (94) is transversely penetrated by the transmission shaft (95), and the gear (94) is connected to the transmission shaft (95). The left end of the transmission shaft (95) is connected to the angle sensor (96) through a coupling. The right end of the transmission shaft (95) is connected to the one-way transmission structure (97), and the right end of the one-way transmission structure (97) is connected to the output shaft of the auxiliary reset motor (98).

2. The hydraulic brake valve according to claim 1, characterized in that: The pedal assembly (4) further includes a straight plate (42), a rotating seat (44), and a fixed rotating shaft (45). The pedal (41) is disposed on the top of the straight plate (42), and the pedal (41) and the edge of the straight plate (42) are movably engaged. The pressure sensor (43) is installed between the pedal (41) and the straight plate (42). The rotating seat (44) is fixed on the bottom left side of the straight plate (42). The middle left side of the rotating seat (44) is rotatably connected to the valve body (1) through a rotating shaft. The bottom right side of the rotating seat (44) is rotatably connected to the roller (46) through a rotating shaft. The bottom left end of the straight plate (42) is rotatably connected to the resistance displacement meter (47) through a rotating shaft, and the other end of the resistance displacement meter (47) is rotatably connected to the valve body (1) through a rotating shaft.

3. The hydraulic brake valve according to claim 1, characterized in that: The connecting rod (92) and the toothed plate (93) are both vertically arranged, and the connecting rod (92) and the toothed plate (93) are arranged in the same vertical line as the valve core (6).

4. A hydraulic brake valve according to claim 1, characterized in that... The bottom end of the toothed plate (93) is fixedly connected to the movable block (99), and the bottom of the movable block (99) is elastically connected to the bottom surface inside the outer shell (91) of the toothed plate return spring (910).

5. A hydraulic brake valve according to claim 1, characterized in that... The toothed plate (93) has a limiting block (931) fixed on its rear side, and the inner center of the limiting block (931) is vertically penetrated by a limiting rod (932). The upper and lower ends of the limiting rod (932) are fixedly connected to the outer shell (91).

6. A hydraulic brake valve according to claim 1, characterized in that... The unidirectional transmission structure (97) includes a driven frame (971), a driving plate (972), an annular plate (973), a slot (974), a mounting groove (975), a slider (976), a connecting post (977), and a compression spring (978). The driving plate (972) is disposed inside the driven frame (971). The right edge of the driven frame (971) is fixedly connected to the annular plate (973). The inner wall of the annular plate (973) has a slot (974). The inner edge of the driving plate (972) has a mounting groove (975). The mounting groove (975) contains... A slider (976) is provided near the center of the active plate (972). The slider (976) is slidably connected to the inner wall of the mounting (975). A connecting post (977) is fixed on the right side of the slider (976) and extends out of the active plate (972). The slider (976) away from the center of the active plate (972) is elastically connected to the mounting groove (975) through a compression spring (978). The center of the left end of the driven frame (971) is connected to the transmission shaft (95). The center of the right end of the active plate (972) is connected to the output shaft of the auxiliary reset motor (98).

7. A hydraulic brake valve according to claim 6, characterized in that... The active plate (972) has a sliding groove on its right side, and the right end of the connecting column (977) extends through the sliding groove and is slidably connected to the sliding column.

8. A hydraulic brake valve according to claim 6, characterized in that... The centers of the driven frame (971), the active plate (972), and the annular plate (973) are arranged in a straight line.

9. A hydraulic brake valve according to claim 1, characterized in that... The valve body (1) is equipped with a plug (8) at the bottom end. The bottom edge of the valve core (6) is elastically connected to the plug (8) through the valve core return spring (7). The top end of the connecting rod (92) passes through the plug (8) and is fixedly connected to the valve core (6). The connecting rod (92) and the plug (8) are sealed together. The valve body (1) is provided with an oil outlet (10) and an oil inlet (11) on both sides.

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