Brake assembly

Abstract

The invention relates to the technical field of hydraulic valves, in particular to a brake assembly which comprises a brake valve module, a pipe joint, a plug, an integrated block and a protective cover, the brake assembly composed of two brake pressure control valves is fixed to the integrated block through the protective cover, the plug and the pipe joint are installed on the integrated block, and the brake pressure control valves are connected with the integrated block by inputting different currents. The larger the current is, the larger the rotation amplitude of the armature is, the larger the distance of the flat spring moving up and down along with the two-dimensional piston is, and the larger the pressure output by the brake assembly is. The two brake pressure control valves not only can work independently, but also can work at the same time, do not interfere with each other when working at the same time and can output different pressures, all parts are assembled in a modular mode through an integrated block, and the space occupied by the whole brake assembly and the weight of equipment can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic valves, and in particular to a brake assembly. Background Art

[0002] Brake components are mainly used in hydraulic oil circuit systems to control the pressure of actuators in the hydraulic system.

[0003] The brake assembly plays the role of regulating and fixing pressure in the hydraulic system. It works by controlling the balance between hydraulic oil and spring. The brake assembly controls the opening and closing of the oil channel on the valve body by the balance between spring force and hydraulic force. Traditional pressure control valves are mainly controlled by manual control and solenoid control. Manual adjustment has the advantage of stable control, but the operation is difficult and the control accuracy is unstable. Solenoid adjustment has the advantages of high control accuracy and simple operation, but unstable control is prone to pressure fluctuations.

[0004] In order to improve the control accuracy and operation stability of the braking equipment, it is necessary to provide a new braking device to avoid the defects of manual control and electromagnet control. Summary of the invention

[0005] In order to solve the above problems, an embodiment of the present invention provides a brake assembly, which solves the problems raised in the background technology. The balance between the liquid pressure and the spring force is controlled by the movement of the two-dimensional valve piston, and the control is stable and pressure fluctuations are not easily generated.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a brake assembly, including an integrated block, on which a pipe joint and a screw plug are provided, a brake valve module is provided in the middle of the integrated block, and the brake valve module is fixed to the integrated block through a protective cover, the brake valve module includes two brake pressure control valves, and the integrated block is provided with a chamber for installing the two brake pressure control valves, the brake pressure control valve includes a connecting plate, a driving source is provided on one side of the connecting plate, and a valve body part is provided on the other side, and a two-dimensional piston connected to the driving source is provided on the upper part of the valve body part.

[0007] As a further improvement of the above technical solution:

[0008] The driving source comprises an armature, a coil, a pole shoe, a permanent magnet, a leaf spring, a clamping screw, a sleeve, a set screw, an LVDT displacement sensor and a bearing retainer which are arranged on a connecting plate.

[0009] The two-dimensional piston is inserted in the middle of the armature, coils are arranged on both sides of the armature, a leaf spring sleeved on the two-dimensional piston is arranged below the armature, pole shoes are arranged on both sides of the coil, a permanent magnet located outside the coil is arranged between the two pole shoes, and the bearing retainer is located above the armature.

[0010] The leaf spring comprises a base body, connecting parts are arranged at both ends of the base body, a through hole for penetrating the two-dimensional piston is arranged in the middle of the base body, and a buffer part is arranged between the through hole and the connecting part.

[0011] The buffer portion is of hollow design.

[0012] The valve body part includes a valve sleeve, one end of the valve sleeve is provided with a piston sleeve for connecting to a two-dimensional piston, and the other end is provided with a power valve core, the outside of the power valve core is provided with a power valve sleeve, a sensitive chamber is provided between the power valve sleeve and the piston sleeve, a pressure-regulating spring is provided in the sensitive chamber, a tightening spring is provided at the bottom of the power valve core, and the lower end of the tightening spring is provided with a tail end cover connected to the valve sleeve.

[0013] The sensitive chamber is provided with a left gasket and a right gasket respectively located at two ends of the pressure regulating spring.

[0014] One end of the valve sleeve away from the sensitive chamber is provided with a concentric ring sleeved on the outside of the two-dimensional piston.

[0015] The two-dimensional piston is provided with a low-pressure groove and a high-pressure groove, and the piston sleeve is provided with a square oblique groove.

[0016] A low-pressure oil port, a working oil port and a high-pressure oil port which are connected to the valve sleeve are arranged on the side wall of the power valve sleeve in sequence from top to bottom.

[0017] The beneficial effects of the embodiments of the present invention are as follows: the brake assembly includes a brake valve module, a pipe joint, a screw plug, an integrated block and a protective cover. The brake assembly consisting of two brake pressure control valves is fixed on the integrated block through a protective cover. The screw plug and the pipe joint are installed on the integrated block. By inputting different currents, different brake pressure control valves can be controlled to work. The greater the current, the greater the rotation amplitude of the armature, the greater the distance the leaf spring moves up and down with the two-dimensional piston, and the greater the pressure output by the brake assembly. The two brake pressure control valves can work independently or simultaneously. They do not interfere with each other when working simultaneously and can output different pressures.

[0018] By modularizing the components through integrated blocks, the space occupied by the entire brake assembly and the weight of the equipment itself can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present invention;

[0020] Figure 2 It is a rear view of the present invention;

[0021] Figure 3 It is a cross-sectional view of a brake assembly (including a brake pressure control valve);

[0022] Figure 4 This is a structural diagram of the brake pressure control valve;

[0023] Figure 5 A top view of the driving source;

[0024] Figure 6 is a cross-sectional view of a driving source;

[0025] Figure 7 It is a cross-sectional view of the valve body;

[0026] Figure 8 It is a cross-sectional view of the valve body;

[0027] Fig. 9 It is the structural diagram of the two-dimensional piston;

[0028] Fig.10 It is the structural diagram of the piston sleeve;

[0029] Fig.11 A top view of a leaf spring.

[0030] In the figure: 1, brake valve module; 2, pipe joint; 3, screw plug; 4, integrated block; 5, protective cover; 6, drive source; 7, valve body; 8, connecting plate; 9, permanent magnet; 10, LVDT displacement sensor; 11, pole shoe; 12, coil; 13, armature; 14, set screw; 15, sleeve; 16, clamping screw; 17, leaf spring; 171, base; 172, connecting part; 173, through hole; 174, buffer part; 18, two 1. Piston; 19. Concentric ring; 20. Piston sleeve; 21. Valve sleeve; 22. Power valve sleeve; 23. Power valve core; 24. Tightening spring; 25. Tail cover; 26. Wire retaining ring; 27. Left gasket; 28. Pressure regulating spring; 29. ​​Right gasket; 30. Bearing retainer; 310. Sensing chamber; 311. High-pressure oil port; 312. Working oil port; 313. Low-pressure oil port; 314. High-pressure groove; 315. Low-pressure groove; 316. Square bevel groove. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0032] like Figure 1-11As shown, the brake assembly of this embodiment includes an integrated block 4, on which a pipe joint 2 and a screw plug 3 are provided, a brake valve module 1 is provided in the middle of the integrated block 4, and the brake valve module 1 is fixed to the integrated block 4 through a protective cover 5. The brake valve module 1 includes two brake pressure control valves, and the integrated block 4 is provided with a chamber for installing the two brake pressure control valves. The brake pressure control valve includes a connecting plate 8, one side of the connecting plate 8 is provided with a driving source 6, and the other side is provided with a valve body part 7, and the upper part of the valve body part 7 is provided with a two-dimensional piston 18 connected to the driving source 6.

[0033] The driving source 6 includes an armature 13 , a coil 12 , a pole shoe 11 , a permanent magnet 9 , a leaf spring 17 , a clamping screw 16 , a sleeve 15 , a set screw 14 , an LVDT displacement sensor 10 and a bearing retainer 30 , which are arranged on the connecting plate 8 .

[0034] The two-dimensional piston 18 is inserted in the middle of the armature 13, and the coils 12 are arranged on both sides of the armature 13. A leaf spring 17 sleeved on the two-dimensional piston 18 is arranged below the armature 13, and pole shoes 11 are arranged on both sides of the coil 12. A permanent magnet 9 located on the outside of the coil 12 is arranged between the two pole shoes 11, and the bearing retainer 30 is located above the armature 13.

[0035] The leaf spring 17 includes a base 171 , with connecting parts 172 provided at both ends of the base 171 , a through hole 173 for penetrating the two-dimensional piston 18 provided in the middle of the base 171 , and a buffer part 174 provided between the through hole 173 and the connecting part 172 .

[0036] The buffer portion 174 is hollow in design.

[0037] The valve body part 7 includes a valve sleeve 21, one end of the valve sleeve 21 is provided with a piston sleeve 20 for connecting to the two-dimensional piston 18, and the other end is provided with a power valve core 23, the outside of the power valve core 23 is provided with a power valve sleeve 22, a sensitive chamber 310 is provided between the power valve sleeve 22 and the piston sleeve 20, a pressure regulating spring 28 is provided in the sensitive chamber 310, a tightening spring 24 is provided at the bottom of the power valve core 23, and the lower end of the tightening spring 24 is provided with a tail end cover 25 connected to the valve sleeve 21.

[0038] A left gasket 27 and a right gasket 29 are disposed in the sensitive chamber 310 and are located at two ends of the pressure regulating spring 28 respectively.

[0039] A concentric ring 19 sleeved on the outside of the two-dimensional piston 18 is provided at one end of the valve sleeve 21 away from the sensitive chamber 310 .

[0040] A low-pressure groove 314 and a high-pressure groove 315 are provided on the two-dimensional piston 18 , and a square inclined groove 316 is provided on the piston sleeve 20 .

[0041] The side wall of the power valve sleeve 22 is provided with a low-pressure oil port 313 , a working oil port 312 and a high-pressure oil port 311 which are communicated with the valve sleeve 21 in sequence from top to bottom.

[0042] Working principle / assembly process of this solution: The brake assembly includes a brake valve module 1, a pipe joint 2, a screw plug 3, an integrated block 4 and a protective cover 5. The brake assembly consisting of two brake pressure control valves is fixed on the integrated block 4 through the protective cover 5. The screw plug 3 and the pipe joint 2 are installed on the integrated block 4. By inputting different currents, different brake pressure control valves can be controlled to work. The greater the current, the greater the rotation amplitude of the armature 13, the greater the distance that the leaf spring 17 moves up and down with the two-dimensional piston 18, and the greater the pressure output by the brake assembly. The two brake pressure control valves can work independently or simultaneously. When working simultaneously, they do not interfere with each other and can output different pressures.

[0043] The brake pressure control valve includes a connecting plate 8 carrying a driving source 6 , a valve body 7 is installed at the other end of the connecting plate 8 , and a two-dimensional piston 18 extending from the valve body 7 is inserted into the connecting plate 8 and then extends from the driving source 6 .

[0044] The driving source 6 adopts a torque motor, including a connecting plate 8, an armature 13, a coil 12, a pole shoe 11, a permanent magnet 9, a leaf spring 17, a clamping screw 16, a sleeve 15, a set screw 14, a bearing retainer 30 and an LVDT displacement sensor 10. The two-dimensional piston 18 is inserted in the center position of the armature 13, a coil 12 is inserted on each side of the armature 13, and the LVDT displacement sensor 10 is installed on the other side of the armature 13. A leaf spring 17 is installed under the armature 13, and a set screw 14 is installed in the screw hole on the side of the armature 13 to lock the armature 13 and the two-dimensional piston 18. The pole shoe 11 is inserted into the driving source 6 along the coil 12, and the permanent magnet 9 is installed between the two pole shoes 11. The bearing retainer 30 is pressed above the connecting plate 8. When the coil 12 is energized, the magnetic circuit of the permanent magnet 9 on the pole shoe 11 changes, and the armature 13 rotates to one side, driving the two-dimensional piston 18 to rotate.

[0045] The leaf spring 17 is made of beryllium bronze, with a hollow middle structure. The structure includes but is not limited to Fig.11 As shown, the hollow structure in the middle of the beryllium bronze can make the armature 13 drive the two-dimensional piston 18 to rotate with a larger angle, and at the same time make the two-dimensional piston 18 drive the armature 13 to move up and down with a larger displacement.

[0046] The valve body part 7 includes a valve sleeve 21, a concentric ring 19, a piston sleeve 20, a two-dimensional piston 18, a power valve sleeve 22, and a power valve core 23. The power valve core 23 is installed in the valve sleeve 21, and a tightening spring 24 and a tail end cover 25 are installed at one end of the power valve core 23. The tail end cover 25 is screwed to the valve sleeve 21 and a wire retaining ring 26 is provided at the connection. A left gasket 27, a pressure regulating spring 28, and a right gasket 29 are installed at the other end of the power valve core 23. The concentric ring 19 is installed on one side of the valve sleeve 21. The concentric ring 19 is sleeved on the two-dimensional piston 18 and then sleeved in the piston sleeve 20. At the same time, the two-dimensional piston 18 presses against the other end of the right gasket 29. A low-pressure groove 315 and a high-pressure groove 314 are provided on the two-dimensional piston 18, and a square oblique groove 316 is provided on the piston sleeve 20. Through the rotation and sliding of the two-dimensional piston 18, the sensitive chamber 310 is connected to the high-pressure groove 314 and the low-pressure groove 316 respectively. The groove 315 is connected. When the two-dimensional piston 18 rotates, the intersection area of ​​the low-pressure groove 315 and the square inclined groove 316 increases, the pressure in the sensitive chamber 310 decreases, and the two-dimensional piston 18 slides downward under the action of the liquid pressure until a new balance is reached. The pressure regulating spring 28 is squeezed by the two-dimensional piston 18 to generate a corresponding spring force, which pushes the power valve core 23 downward and destroys the pressure balance, thereby increasing the flux of the high-pressure oil port 311 on the power valve sleeve 22 and reducing the flux of the low-pressure oil port 313, causing the pressure of the working oil port 312 to rise. An oil channel is drilled in the power valve core 23 to connect to the bottom of the valve sleeve 21. The pressure at the bottom of the valve sleeve 21 increases until the spring force is balanced, and the power valve core 23 returns to its original position. At this time, the pressure output by the working oil port 312 is the pressure of the spring force acting on the power valve core 23, and the flux of the high-pressure oil port 311 and the low-pressure oil port 313 are the same.

[0047] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0050] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A brake assembly, characterized in that: It comprises an integrated block (4), on which a pipe joint (2) and a screw plug (3) are arranged, a brake valve module (1) is arranged in the middle of the integrated block (4), and the brake valve module (1) is fixed to the integrated block (4) via a protective cover (5); The brake valve module (1) comprises two brake pressure control valves, the integrated block (4) is provided with a chamber for installing the two brake pressure control valves, the brake pressure control valve comprises a connecting plate (8), a driving source (6) is provided on one side of the connecting plate (8), and a valve body part (7) is provided on the other side, and a two-dimensional piston (18) connected to the driving source (6) is provided on the upper part of the valve body part (7).

2. The brake assembly according to claim 1, characterized in that: The driving source (6) comprises an armature (13) arranged on a connecting plate (8), a coil (12), a pole shoe (11), a permanent magnet (9), a leaf spring (17), a clamping screw (16), a sleeve (15), a set screw (14), an LVDT displacement sensor (10) and a bearing retainer (30).

3. The brake assembly according to claim 2, characterized in that: The two-dimensional piston (18) is inserted in the middle of the armature (13), coils (12) are arranged on both sides of the armature (13), a leaf spring (17) sleeved on the two-dimensional piston (18) is arranged below the armature (13), pole shoes (11) are arranged on both sides of the coil (12), a permanent magnet (9) located outside the coil (12) is arranged between the two pole shoes (11), and the bearing retainer (30) is located above the armature (13).

4. The brake assembly according to claim 2, characterized in that: The leaf spring (17) comprises a base (171), connecting parts (172) are arranged at both ends of the base (171), a through hole (173) for penetrating the two-dimensional piston (18) is arranged in the middle of the base (171), and a buffer part (174) is arranged between the through hole (173) and the connecting part (172).

5. The brake assembly according to claim 4, characterized in that: The buffer portion (174) is of hollow design.

6. The brake assembly according to claim 1, characterized in that: The valve body part (7) includes a valve sleeve (21), one end of the valve sleeve (21) is provided with a piston sleeve (20) for connecting to a two-dimensional piston (18), and the other end is provided with a power valve core (23), the outside of the power valve core (23) is provided with a power valve sleeve (22), a sensitive chamber (310) is provided between the power valve sleeve (22) and the piston sleeve (20), a pressure regulating spring (28) is provided in the sensitive chamber (310), a tightening spring (24) is provided at the bottom of the power valve core (23), and the lower end of the tightening spring (24) is provided with a tail end cover (25) connected to the valve sleeve (21).

7. The brake assembly according to claim 6, characterized in that: The sensitive chamber (310) is provided with a left gasket (27) and a right gasket (29) respectively located at the two ends of the pressure regulating spring (28).

8. The brake assembly according to claim 6, characterized in that: One end of the valve sleeve (21) away from the sensitive chamber (310) is provided with a concentric ring (19) sleeved on the outside of the two-dimensional piston (18).

9. The brake assembly according to claim 6, characterized in that: The two-dimensional piston (18) is provided with a low-pressure groove (314) and a high-pressure groove (315), and the piston sleeve (20) is provided with a square inclined groove (316).

10. The brake assembly according to claim 6, characterized in that: A low-pressure oil port (313), a working oil port (312) and a high-pressure oil port (311) which are in communication with the valve sleeve (21) are arranged on the side wall of the power valve sleeve (22) in sequence from top to bottom.

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