Steering control valve group

Abstract

The utility model relates to the technical field of control valves, in particular to a steering control valve group. In order to solve the problems that oil ways in a hydraulic system are mutually connected, and the maintenance difficulty is increased when hydraulic components are maintained or replaced, the following technical scheme is provided: the hydraulic system comprises a mounting seat, and four groups of shells are mounted on the mounting seat; four sets of valve bodies used for being connected with a hydraulic oil way are arranged in the installation base. Each valve body is provided with a control assembly used for driving hydraulic oil to flow, and the control assemblies are arranged in the shell. Each group of shell is provided with a control module which corresponds to each group of control assembly and is used for controlling, and the side surface of one group of shell is also provided with a general control module for allocation. The steering device has the advantages that the response speed is high when the wheels are steered, various steering modes can be realized, the maintenance and the replacement are convenient, and the maintenance difficulty is low.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a steering control valve group. Background Art

[0002] Since the vehicle's steering system is usually a hydraulic power-assisted steering system, the hydraulic pump therein is responsible for providing hydraulic power to the entire steering system. The hydraulic pump supplies hydraulic oil to the main control valve of the steering system, and the main control valve then distributes the hydraulic oil to the steering cylinders of each wheel. Therefore, the hydraulic oil is connected between the various processing devices to achieve coordination and balance of vehicle steering. Sharing hydraulic oil means that the oil circuits in the hydraulic system are interconnected. If one part of it is contaminated, it may spread to the entire system. Therefore, when repairing or replacing hydraulic components, extra care must be taken to prevent oil contamination, which increases the difficulty of maintenance. In view of this, the utility model proposes a steering control valve group. Utility Model Content

[0003] The purpose of the utility model is to propose a steering control valve group to solve the problem in the background technology that the oil circuits in the hydraulic system are interconnected, which increases the difficulty of maintenance when repairing or replacing hydraulic components.

[0004] The technical solution of the present utility model is as follows: a steering control valve group includes a mounting seat, on which four groups of shells are installed; four groups of valve bodies for connecting to hydraulic oil circuits are arranged in the mounting seat; each group of the valve bodies is installed with a control component for driving the flow of hydraulic oil, and the control component is arranged in the shell; each group of the shells is installed with a control module corresponding to and controlling each group of control components, and a master control module for deployment is also arranged on the side of one group of shells.

[0005] Optionally, the valve body includes a first oil cylinder, a first piston, a second oil cylinder, a second piston, and a first connecting pipe. The first oil cylinder and the second oil cylinder are connected through the first connecting pipe. The first piston is installed in the first oil cylinder and is arranged below the first connecting pipe. The second piston is installed in the second oil cylinder and is arranged above the first connecting pipe. The first piston divides the first oil cylinder into a first interval above and a second interval below. The second piston divides the second oil cylinder into a third interval above and a fourth interval below.

[0006] Optionally, the valve body also includes two groups of connecting pipes installed on the side of the first cylinder and the second cylinder away from each other, one end of the connecting pipe is connected to the hydraulic oil circuit, the two groups of connecting pipes are coaxially arranged, the connecting pipe installed on the side of the first cylinder is connected to the second interval, and the connecting pipe installed on the side of the second cylinder is connected to the fourth interval.

[0007] Optionally, the valve body further includes a second communicating pipe for communicating the second section with the third section, and the first section with the fourth section is communicated through the first communicating pipe.

[0008] Optionally, the control assembly includes a long rod, a first rack, and a first gear. The long rod is fixedly connected to the top of the first piston, passes through the top of the first cylinder and is slidingly connected to the first cylinder. The first rack is installed on the top of the long rod, and the first gear is rotatably connected to the housing and meshes with the first rack.

[0009] Optionally, the control component also includes a short rod, a second rack, a second gear, and a third gear. The short rod is fixedly connected to the top of the second piston, the short rod passes through the top of the second cylinder and is slidingly connected to the second cylinder, the second rack is installed on the top of the short rod, the second gear is arranged on the side of the second rack close to the first gear, the second gear is engaged with the second rack, and the third gear rotatably connected to the housing is engaged with the first gear and the second gear.

[0010] Optionally, the control component further includes a micro motor installed in the housing, and an output end of the micro motor is fixedly connected to the second gear.

[0011] Optionally, sealing rubber rings are provided at the sliding position between the long rod and the first oil cylinder, and at the sliding position between the second oil cylinder and the second piston.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] The utility model controls the steering of the four wheels separately by setting up four sets of valve bodies. When repairing or replacing hydraulic components, the four sets of hydraulic oil circuits do not interfere with each other, which reduces the difficulty of maintenance and facilitates various steering operations.

[0014] Furthermore, by setting up the control component, the first piston and the second piston can be driven to move in opposite directions, thereby squeezing the hydraulic oil in the first cylinder and the first piston into the steering cylinder to steer the wheel. At the same time, the small displacement of the first piston and the second piston can drive more hydraulic oil to move, thereby accelerating the steering response speed.

[0015] In summary, the present invention has a fast response speed when steering the wheels and can realize multiple steering modes. It is also easy to repair and replace, and has low maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the steering control valve group;

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-section structure;

[0018] Figure 3 It is a structural diagram of the control component;

[0019] Figure 4 yes Figure 2 Enlarged schematic diagram of point A in the middle.

[0020] Reference numerals:

[0021] 1. Mounting seat;

[0022] 2. Housing; 21. Control module; 22. Master control module;

[0023] 3. Valve body; 31. First oil cylinder; 32. First piston; 33. Second oil cylinder; 34. Second piston; 35. First connecting pipe; 36. Connecting pipe; 37. Second connecting pipe; 311. First section; 312. Second section; 331. Third section; 332. Fourth section;

[0024] 4. Control assembly; 41. Long rod; 42. First rack; 43. First gear; 44. Short rod; 45. Second rack; 46. Second gear; 47. Third gear; 48. Micro motor. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] Example

[0031] like Figure 1-3 As shown, the steering control valve assembly proposed in the present invention includes a mounting base 1, on which four housings 2 are mounted. Mounting base 1 houses four valve bodies 3 for connecting to hydraulic oil circuits. The valve bodies 3 include a first cylinder 31, a first piston 32, a second cylinder 33, a second piston 34, and a first connecting pipe 35. The first cylinder 31 and the second cylinder 33 are connected via the first connecting pipe 35, allowing hydraulic oil to flow between the first and second cylinders 31 and 33. The first piston 32 is mounted in the first cylinder 31 and positioned below the first connecting pipe 35. The second piston 34 is mounted in the second cylinder 33 and positioned above the first connecting pipe 35. The first piston 32 divides the first cylinder 31 into an upper first section 311 and a lower second section 312. The second piston 34 divides the second cylinder 33 into an upper third section 331 and a lower fourth section 332. The first connecting pipe 35 connects the first and fourth sections 311 and 332, allowing hydraulic oil to flow synchronously therebetween. The valve body 3 also includes two sets of connecting pipes 36, mounted on opposite sides of the first and second cylinders 31 and 33. One end of each connecting pipe 36 is connected to the hydraulic oil circuit. The four sets of valve bodies 3 are connected to the steering cylinders of the four wheels, respectively, to control steering. The two sets of connecting pipes 36 are coaxially arranged. The connecting pipe 36 mounted on the side of the first cylinder 31 communicates with the second section 312, while the connecting pipe 36 mounted on the side of the second cylinder 33 communicates with the fourth section 332. The valve body 3 also includes a second connecting pipe 37, which connects the second section 312 with the third section 331. This second connecting pipe 37 is U-shaped and allows hydraulic oil in the second and third sections 312 and 331 to communicate.

[0032] For details, please refer to Figure 2-4The control valve assembly also includes a control assembly 4 mounted on each valve body 3 to drive the flow of hydraulic oil. The control assembly 4 is disposed within the housing 2. The control assembly 4 comprises a long rod 41, a first rack 42, and a first gear 43. The long rod 41 is fixedly connected to the top of the first piston 32. When the long rod 41 moves, it drives the first piston 32 to slide within the first cylinder 31, thereby driving the flow of hydraulic oil. The long rod 41 extends through the top of the first cylinder 31 and is slidably connected to the first cylinder 31. The first rack 42 is mounted on the top of the long rod 41 and moves synchronously with the first rack 42. The first gear 43 is rotatably connected to the housing 2 and meshes with the first rack 42. Rotation of the first gear 43 drives movement of the first rack 42. The control assembly 4 also includes a short rod 44, a second rack 45, a second gear 46, and a third gear 47. The short rod 44 is fixedly connected to the top of the second piston 34. When it moves, the short rod 44 drives the second piston 34 to slide within the second cylinder 33, thereby driving the flow of hydraulic oil. A short rod 44 extends through the top of the second cylinder 33 and is slidably connected to it. A second rack 45 is mounted on the top of the short rod 44 and moves synchronously with it. A second gear 46 is positioned on the side of the second rack 45 near the first gear 43 and meshes with the second rack 45. A third gear 47, rotatably connected to the housing 2, meshes with both the first gear 43 and the second gear 46. The second gear 46 rotates, driving the second rack 45 to move. Simultaneously, the third gear 47 drives the first gear 43 to rotate synchronously, in the same direction. The control assembly 4 also includes a micromotor 48 mounted in the housing 2. The output end of the micromotor 48 is fixedly connected to the second gear 46, driving the second gear 46 to rotate. Sealing rubber rings are provided at the sliding locations between the long rod 41 and the first cylinder 31, and between the second cylinder 33 and the second piston 34, to enhance sealing and prevent hydraulic oil leakage.

[0033] Finally, if Figure 1 As shown, each housing 2 is equipped with a control module 21 corresponding to and controlling each control assembly 4, enabling independent control of the four wheels. A master control module 22 is also provided on the side of one housing 2 for coordination, allowing the four wheels to rotate in a coordinated manner, thereby achieving multi-directional movement.

[0034] In this embodiment, the micromotor 48 is activated, driving the second gear 46 to rotate. The second gear 46 then drives the first gear 43 to rotate via the third gear 47, with the first and second gears 43 and 46 rotating in the same direction. Because the first rack 42 meshes with the first gear 43 and the second rack 45 meshes with the second gear 46, the first rack 42 moves upward, while the second rack 45 moves downward. As the first rack 42 moves upward, it drives the first piston 32 upward via the long rod 41, compressing the first section 311 and expanding the second section 312. Simultaneously, the second rack 45 drives the second piston 34 downward via the short rod 44, compressing the fourth section 332 and expanding the third section 331. Furthermore, because the first and fourth sections 311 and 332 are connected via the first connecting pipe 35, and the second and third sections 312 and 331 are connected via the second connecting pipe 37, the oil circuit connected by the two sets of connecting pipes 36 can drive the hydraulic oil in the circuit, thereby controlling the steering cylinder and the wheel angle. This allows for greater hydraulic fluid flow when the distance between the first piston 32 and the second piston 34 is small, enabling a quick response of the steering cylinder. The master control module 22 coordinates the activation of multiple control modules 21 and controls the rotation angles of the micro motors 48, achieving coordinated rotation angles of the four wheels and enabling multi-directional wheel control.

[0035] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. Steering control valve group, characterized in that, include: A mounting base (1), with four sets of housings (2) mounted on the mounting base (1); The mounting seat (1) is provided with four groups of valve bodies (3) for connecting to a hydraulic oil circuit; Each group of valve bodies (3) is equipped with a control component (4) for driving the flow of hydraulic oil, and the control component (4) is arranged in the housing (2); Each group of the housings (2) is equipped with a control module (21) corresponding to and controlling each group of control components (4), and a master control module (22) for coordination is also provided on the side of one group of the housings (2).

2. The steering control valve assembly according to claim 1, characterized in that: The valve body (3) comprises a first oil cylinder (31), a first piston (32), a second oil cylinder (33), a second piston (34), and a first connecting pipe (35). The first oil cylinder (31) and the second oil cylinder (33) are connected through the first connecting pipe (35). The first piston (32) is installed in the first oil cylinder (31) and is arranged below the first connecting pipe (35). The second piston (34) is installed in the second oil cylinder (33) and is arranged above the first connecting pipe (35). The first piston (32) divides the first oil cylinder (31) into an upper first section (311) and a lower second section (312). The second piston (34) divides the second oil cylinder (33) into an upper third section (331) and a lower fourth section (332).

3. The steering control valve assembly according to claim 2, characterized in that: The valve body (3) further comprises two groups of connecting pipes (36) respectively installed on one side of the first oil cylinder (31) and the second oil cylinder (33) away from each other, one end of the connecting pipe (36) being connected to the hydraulic oil circuit, and the two groups of connecting pipes (36) being coaxially arranged, the connecting pipe (36) installed on the side of the first oil cylinder (31) being connected to the second section (312), and the connecting pipe (36) installed on the side of the second oil cylinder (33) being connected to the fourth section (332).

4. The steering control valve assembly according to claim 2, characterized in that: The valve body (3) further includes a second communicating pipe (37) for communicating the second section (312) with the third section (331), and the first section (311) and the fourth section (332) are communicated through a first communicating pipe (35).

5. The steering control valve assembly according to claim 2, characterized in that: The control assembly (4) comprises a long rod (41), a first rack (42), and a first gear (43); the long rod (41) is fixedly connected to the top of the first piston (32); the long rod (41) passes through the top of the first oil cylinder (31) and is slidably connected to the first oil cylinder (31); the first rack (42) is installed on the top of the long rod (41); and the first gear (43) is rotatably connected to the housing (2) and meshes with the first rack (42).

6. The steering control valve assembly according to claim 5, characterized in that: The control assembly (4) further comprises a short rod (44), a second rack (45), a second gear (46), and a third gear (47). The short rod (44) is fixedly connected to the top of the second piston (34), the short rod (44) passes through the top of the second oil cylinder (33) and is slidably connected to the second oil cylinder (33), the second rack (45) is mounted on the top of the short rod (44), the second gear (46) is arranged on the side of the second rack (45) close to the first gear (43), the second gear (46) is meshed with the second rack (45), and the third gear (47) rotatably connected to the housing (2) is meshed with the first gear (43) and the second gear (46).

7. The steering control valve assembly according to claim 6, characterized in that: The control assembly (4) further comprises a micro motor (48) installed in the housing (2), and an output end of the micro motor (48) is fixedly connected to the second gear (46).

8. The steering control valve assembly according to claim 5, characterized in that: Sealing rubber rings are provided at the sliding position between the long rod (41) and the first oil cylinder (31) and at the sliding position between the second oil cylinder (33) and the second piston (34).

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