Steering mechanism, vehicle, device and method for preparing steering mechanism

Abstract

A steering mechanism comprises a first steering wheel (10), a second steering wheel (20), a first driving device (30) and a second driving device (40). The first driving device (30) is connected to the first steering wheel (10); the second driving device (40) is connected to the second steering wheel (20). The first driving device (30) and the second driving device (40) are respectively used to drive the first steering wheel (10) and the second steering wheel (20) independently, so that the first steering wheel (10) and the second steering wheel (20) are deflected in the same direction to achieve steering. The first driving device (30) and the second driving device (40) are respectively driven independently to deflect in the same direction, and there is no linkage relationship between the two steering wheels. The two steering wheels do not need to be connected through a complex mechanical transmission mechanism, thereby simplifying the structure of the steering mechanism. A vehicle, an apparatus and a method for preparing a steering mechanism are also disclosed.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular, to a steering mechanism, a vehicle, and an apparatus and method for preparing a steering mechanism. Background Art

[0002] Currently, there are two main types of vehicle steering mechanisms. The first is a mechanical hydraulic steering mechanism, which uses an engine belt to drive a hydraulic pump, and then controls the pressure difference of the hydraulic oil flowing into the two ends of the power cylinder through a valve body, pulling the piston to move, and the piston is connected to the power connecting rod to transmit the power to the wheels to achieve left and right steering. This is mainly used in traditional fuel vehicles; the other is to control the steering through electric assistance. The electric motor, together with the clutch and reduction gear, is installed on the frame, and the motor assists the mechanical power transmission rod to achieve steering.

[0003] Generally, the two steering wheels in the steering mechanism are linked via a complex linkage mechanism, and the entire steering mechanism has a relatively complex structure. Summary of the invention

[0004] The embodiments of the present application provide a steering mechanism, a vehicle, and an apparatus and method for preparing a steering mechanism to improve the problem of complex structure of the steering mechanism.

[0005] In a first aspect, an embodiment of the present application provides a steering mechanism, comprising:

[0006] First steering wheel;

[0007] Second steering wheel;

[0008] A first driving device connected to the first steering wheel; and

[0009] A second driving device connected to the second steering wheel;

[0010] The first driving device and the second driving device are respectively used to drive the first steering wheel and the second steering wheel independently, so that the first steering wheel and the second steering wheel are deflected in the same direction to achieve steering.

[0011] In the above scheme, the first driving device and the second driving device are respectively driven to deflect in the same direction. There is no linkage relationship between the two steering wheels, and the two steering wheels do not need to be connected by a complex mechanical transmission mechanism, which simplifies the structure of the steering mechanism.

[0012] In addition, the steering mechanism of the embodiment of the present application also has the following additional technical features:

[0013] In some embodiments, the first driving device comprises:

[0014] Two first hydraulic cylinders are spaced apart and distributed on the same side of the first steering wheel. One first hydraulic cylinder is used to push the first steering wheel, and the other first hydraulic cylinder is used to pull the first steering wheel to drive the first steering wheel to deflect.

[0015] In the above scheme, the first steering wheel is driven to deflect by two first hydraulic cylinders in a push-and-pull manner. The two first hydraulic cylinders can provide a greater steering force for the first steering wheel and make the deflection and steering process of the first steering wheel smoother.

[0016] In some embodiments, the second driving device comprises:

[0017] Two second hydraulic cylinders are spaced apart and distributed on the same side of the second steering wheel. One second hydraulic cylinder is used to push the second steering wheel, and the other second hydraulic cylinder is used to pull the second steering wheel to drive the second steering wheel to deflect.

[0018] In the above scheme, the second steering wheel is driven to deflect by two second hydraulic cylinders in a push-and-pull manner. The two second hydraulic cylinders can provide a greater steering force for the second steering wheel and make the deflection and steering process of the second steering wheel smoother.

[0019] In some embodiments, the two first hydraulic cylinders include a first front hydraulic cylinder and a first rear hydraulic cylinder, the two second hydraulic cylinders include a second front hydraulic cylinder and a second rear hydraulic cylinder, and the first front hydraulic cylinder, the first rear hydraulic cylinder, the second front hydraulic cylinder and the second rear hydraulic cylinder are all located between the first steering wheel and the second steering wheel;

[0020] When the first steering wheel and the second steering wheel deflect to the left in the same direction, the first front hydraulic cylinder is used to push the first steering wheel, the first rear hydraulic cylinder is used to pull the first steering wheel, the second front hydraulic cylinder is used to pull the second steering wheel, and the second rear hydraulic cylinder is used to push the second steering wheel;

[0021] When the first steering wheel and the second steering wheel deflect to the right in the same direction, the first front hydraulic cylinder is used to pull the first steering wheel, the first rear hydraulic cylinder is used to push the first steering wheel, the second front hydraulic cylinder is used to push the second steering wheel, and the second rear hydraulic cylinder is used to pull the second steering wheel.

[0022] In the above solution, since the first front hydraulic cylinder, the first rear hydraulic cylinder, the second front hydraulic cylinder and the second rear hydraulic cylinder are all located between the first steering wheel and the second steering wheel, the steering mechanism has a compact structure and reduces the space occupied.

[0023] In some embodiments, the steering mechanism further comprises:

[0024] The hydraulic control system is used to supply fluid to the first drive device and the second drive device so that the first drive device and the second drive device drive the first steering wheel and the second steering wheel respectively and independently so that the first steering wheel and the second steering wheel deflect in the same direction.

[0025] In the above scheme, the hydraulic control system supplies fluid to the first drive device and the second drive device, so that the first drive device and the second drive device can be precisely controlled to achieve the same-direction deflection of the first steering wheel and the second steering wheel. It can be understood that the first drive device and the second drive device are hydraulic actuators, and under the action of the hydraulic control system, the first drive device and the second drive device can provide a large driving force for the first steering wheel and the second steering wheel.

[0026] In some embodiments, the hydraulic control system includes:

[0027] A steering control device having a first working state and a second working state;

[0028] a steering member, drivingly connected to the steering control device, the steering member being used to control the steering control device to switch between the first working state and the second working state; and

[0029] A fluid supply device is used to supply fluid to the first drive device and the second drive device when the steering control device is in a first working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the left in the same direction; and is also used to supply fluid to the first drive device and the second drive device when the steering control device is in a second working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the right in the same direction.

[0030] In the above scheme, the steering control device can be controlled by the steering member to put the steering control device in the first working state or the second working state, so that the fluid supply device supplies fluid to the first drive device and the second drive device, so as to realize the first steering wheel and the second steering wheel to deflect to the left or right in the same direction. This structural hydraulic control system can realize steering by operating the steering member, and the overall structure is simple and the steering operation is convenient.

[0031] In some embodiments, the hydraulic control system further comprises:

[0032] A diverter valve, wherein the liquid provided by the liquid supply device flows into the first drive device and the second drive device through the diverter valve and the steering control device in sequence, and the diverter valve is used to adjust the ratio of the flow rate of the liquid flowing from the steering control device into the first drive device to the flow rate of the liquid flowing from the steering control device into the second drive device, so that the deflection angle of the first steering wheel is the same or different from the deflection angle of the second steering wheel.

[0033] In the above scheme, the flow ratio of the liquid flowing from the steering control device into the first drive device to the flow ratio of the liquid flowing from the steering control device into the second drive device can be adjusted by the diverter valve. In the actual driving process, the flow ratio of the liquid flowing into the first drive device to the flow ratio of the liquid flowing into the second drive device can be controlled by the diverter valve according to the specific driving conditions, so that the deflection angles of the first steering wheel and the second steering wheel during the steering process are the same or different, thereby improving the handling performance and driving experience.

[0034] In some embodiments, the hydraulic control system further comprises:

[0035] A flow regulating valve, wherein the liquid provided by the liquid supply device flows into the first drive device and the second drive device through the flow regulating valve, the diverter valve, and the steering control device in sequence;

[0036] A vehicle speed sensor, used to obtain a vehicle speed signal; and

[0037] The control unit is used to control the flow regulating valve to adjust the flow of the liquid flowing into the diverter valve according to the vehicle speed signal.

[0038] In the above scheme, the vehicle speed signal can be obtained by the vehicle speed sensor, and the control unit can control the flow regulating valve according to the vehicle speed signal to adjust the flow of the liquid flowing into the diverter valve. If the flow of the liquid flowing into the diverter valve changes, the flow of the liquid flowing into the first drive device and the second drive device through the diverter valve and the steering control device in sequence will also change, so as to change the driving force provided by the first drive device and the second drive device to the first steering wheel and the second steering wheel respectively.

[0039] In some embodiments, the hydraulic control system further comprises:

[0040] A torque sensor, used for obtaining a torque signal of the steering member;

[0041] The control unit is further configured to control the flow regulating valve to regulate the flow of the liquid flowing into the diverter valve according to the torque signal.

[0042] In the above scheme, the torque signal of the steering member can be obtained by the torque sensor, and the control unit can control the flow regulating valve according to the torque signal to adjust the flow of the liquid flowing into the diverter valve. If the flow of the liquid flowing into the diverter valve changes, the flow of the liquid flowing into the first drive device and the second drive device through the diverter valve and the steering control device in sequence will also change, so as to change the driving force provided by the first drive device and the second drive device to the first steering wheel and the second steering wheel respectively. When the torque applied to the steering member by the driver during the steering process is greater than the preset value, the torque sensor can obtain a torque signal representing the magnitude of the torque applied to the steering member, and the control unit controls the flow regulating valve to increase the flow of liquid flowing into the diverter valve, ultimately causing the first drive device and the second drive device to provide a larger driving force to the first steering wheel and the second steering wheel respectively, so that the first steering wheel and the second steering wheel deflect at a relatively faster speed; when the torque applied to the steering member by the driver during the steering process is less than the preset value, the torque sensor can obtain a torque signal representing the magnitude of the torque applied to the steering member, and the control unit controls the flow regulating valve to reduce the flow of liquid flowing into the diverter valve, ultimately causing the first drive device and the second drive device to provide a smaller driving force to the first steering wheel and the second steering wheel respectively, so that the first steering wheel and the second steering wheel deflect at a relatively slower speed.

[0043] In some embodiments, the steering control device includes:

[0044] A first reversing valve connected to the first driving device through a first pipeline and a second pipeline; and

[0045] a second reversing valve, connected to the second driving device through a third pipeline and a fourth pipeline;

[0046] The steering member is used to switch the positions of the valve core of the first reversing valve and the valve core of the second reversing valve, so that the steering control device is in a first working state or a second working state;

[0047] When the steering control device is in a first working state, the first pipeline and the third pipeline are liquid inlet pipelines, and the second pipeline and the fourth pipeline are liquid return pipelines;

[0048] When the steering control device is in the second working position, the first pipeline and the third pipeline are liquid return pipelines, and the second pipeline and the fourth pipeline are liquid inlet pipelines.

[0049] In the above scheme, the first reversing valve and the second reversing valve are used to respectively change the inlet and outlet conditions of the first driving device and the second driving device to achieve the deflection of the first steering wheel and the second steering wheel. This steering control device has a simple structure.

[0050] In some embodiments, the first driving device comprises:

[0051] Two first hydraulic cylinders are spaced apart and distributed on the same side of the first steering wheel, the piston rod of each first hydraulic cylinder is connected to the first steering wheel, and each first hydraulic cylinder includes a first chamber for extending the piston rod by fluid inflow and a second chamber for retracting the piston rod by fluid inflow;

[0052] The first chamber of a first hydraulic cylinder and the second chamber of another first hydraulic cylinder are in communication with the first pipeline, and the second chamber of the first hydraulic cylinder and the first chamber of the other first hydraulic cylinder are in communication with the second pipeline.

[0053] In the above scheme, if the first pipeline is filled with liquid, the first chamber of a first hydraulic cylinder and the second chamber of another first hydraulic cylinder are filled with liquid, the piston rod of one first hydraulic cylinder is extended to apply thrust to the first steering wheel, and the piston rod of the other first hydraulic cylinder is retracted to apply tension to the first steering wheel; if the second pipeline is filled with liquid, the second chamber of a first hydraulic cylinder and the first chamber of another first hydraulic cylinder are filled with liquid, the piston rod of one first hydraulic cylinder is retracted to apply tension to the first steering wheel, and the piston rod of the other first hydraulic cylinder is extended to apply thrust to the first steering wheel. In other words, no matter whether the first pipeline or the second pipeline is filled with liquid, the two first hydraulic cylinders will adopt a push-pull method to drive the first steering wheel to deflect, which can provide a greater steering force for the first steering wheel and make the first steering wheel deflection and steering process smoother.

[0054] In some embodiments, the second driving device comprises:

[0055] Two second hydraulic cylinders are spaced apart and distributed on the same side of the second steering wheel, the piston rod of each second hydraulic cylinder is connected to the second steering wheel, and each second hydraulic cylinder includes a third chamber for extending the piston rod when liquid is added, and a fourth chamber for retracting the piston rod when liquid is added;

[0056] The third chamber of one second hydraulic cylinder and the fourth chamber of another second hydraulic cylinder are in communication with the third pipeline, and the fourth chamber of one second hydraulic cylinder and the third chamber of another second hydraulic cylinder are in communication with the fourth pipeline.

[0057] In the above scheme, if the third pipeline is filled with liquid, the third chamber of a second hydraulic cylinder and the fourth chamber of another second hydraulic cylinder are filled with liquid, the piston rod of one second hydraulic cylinder is extended to apply thrust to the second steering wheel, and the piston rod of the other second hydraulic cylinder is retracted to apply tension to the second steering wheel; if the fourth pipeline is filled with liquid, the fourth chamber of a second hydraulic cylinder and the third chamber of another second hydraulic cylinder are filled with liquid, the piston rod of one second hydraulic cylinder is retracted to apply tension to the second steering wheel, and the piston rod of the other second hydraulic cylinder is extended to apply thrust to the second steering wheel. In other words, no matter whether the third pipeline or the fourth pipeline is filled with liquid, the two second hydraulic cylinders will adopt a push-pull method to drive the second steering wheel to deflect, which can provide a greater steering force for the second steering wheel and make the second steering wheel deflection and steering process smoother.

[0058] In a second aspect, an embodiment of the present application provides a vehicle, comprising the above-mentioned steering mechanism.

[0059] In the above scheme, the steering mechanism of the vehicle drives the first steering wheel and the second steering wheel to deflect in the same direction respectively through the first drive device and the second drive device. There is no linkage relationship between the two steering wheels, and the two steering wheels do not need to be connected through a complex mechanical transmission mechanism, which simplifies the structure of the steering mechanism and reduces the weight and space occupancy of the entire vehicle.

[0060] In a third aspect, an embodiment of the present application provides a device for preparing a steering mechanism, wherein the device for preparing a steering mechanism comprises:

[0061] providing means for providing a first steering wheel, a second steering wheel, a first drive device, and a second drive device; and

[0062] A mounting device, used for mounting the first steering wheel and the second steering wheel on the first driving device and the second driving device respectively;

[0063] The first driving device and the second driving device are respectively used to drive the first steering wheel and the second steering wheel independently, so that the first steering wheel and the second steering wheel are deflected in the same direction to achieve steering.

[0064] In a fourth aspect, an embodiment of the present application provides a method for preparing a steering mechanism, the method for preparing a steering mechanism comprising:

[0065] Providing a first steering wheel, a second steering wheel, a first driving device and a second driving device;

[0066] installing the first steering wheel on the first driving device;

[0067] installing the second steering wheel on the second driving device;

[0068] The first driving device and the second driving device are respectively used to drive the first steering wheel and the second steering wheel independently, so that the first steering wheel and the second steering wheel are deflected in the same direction to achieve steering. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0070] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0071] Figure 2 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are not deflected) provided in some embodiments of the present application;

[0072] Figure 3 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are deflected to the left) provided in some embodiments of the present application;

[0073] Figure 4 A steering mechanism provided in some embodiments of the present application (the first steering wheel and the second steering wheel are deflected to the right);

[0074] Figure 5 A schematic diagram of the structure of a steering mechanism provided in another embodiment of the present application;

[0075] Figure 6 A schematic diagram of the structure of a steering mechanism provided in some other embodiments of the present application;

[0076] Figure 7 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are not deflected) provided in some other embodiments of the present application;

[0077] Figure 8 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are deflected to the left) provided in some further embodiments of the present application;

[0078] Fig. 9 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are deflected to the right) provided in some further embodiments of the present application;

[0079] Fig.10 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are not deflected) provided in some other embodiments of the present application;

[0080] Fig.11 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are deflected to the left) provided in some other embodiments of the present application;

[0081] Fig.12 A schematic diagram of the structure of a steering mechanism (the first steering wheel and the second steering wheel are deflected to the right) provided in some other embodiments of the present application;

[0082] Fig.13 A schematic diagram of the structure of a steering mechanism provided in some embodiments of the present application;

[0083] Fig.14 A schematic diagram of the structure of a steering mechanism provided in some further embodiments of the present application;

[0084] Fig.15 A schematic block diagram of an apparatus for preparing a steering mechanism provided in some embodiments of the present application;

[0085] Fig.16 A flow chart of a method for preparing a steering mechanism provided in some embodiments of the present application.

[0086] Marking description: 10-first steering wheel; 11-first wheel; 12-first connecting frame; 13-first rotating shaft; 20-second steering wheel; 21-second wheel; 22-second connecting frame; 23-second rotating shaft; 30-first driving device; 31-first hydraulic cylinder; 311-first chamber; 312-second chamber; 32-first front hydraulic cylinder; 33-first rear hydraulic cylinder; 40-second driving device; 41-second hydraulic cylinder; 411-third chamber; 412-fourth chamber; 42-second front hydraulic cylinder; 43-second rear hydraulic cylinder; 50-hydraulic control system; 51-steering control device; 511-first reversing valve; 5111-first pipeline; 5112-second pipeline; 512-second reversing valve; 5121-third pipeline; 5122-fourth pipeline; 52-steering member; 53-liquid supply device; 531-hydraulic pump; 532-liquid storage tank; 533-driving motor; 54-diverter valve; 541-pipeline; 542-connecting pipe; 55-flow regulating valve; 56-vehicle speed sensor; 57-control unit; 58-torque sensor; 60-frame; 100-steering mechanism; 200-battery; 300-controller; 400-motor; 1000-vehicle; 1100-providing device; 1200-installing device; 2000-equipment for preparing steering mechanism. DETAILED DESCRIPTION

[0087] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0088] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0089] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0090] At present, the two steering wheels in the steering mechanism of a vehicle are generally linked through a complex linkage mechanism, and the structure of the entire steering mechanism is relatively complex.

[0091] In view of this, the present application provides a technical solution, which realizes steering by separately driving two steering wheels to deflect in the same direction through two driving devices.

[0092] It should be noted that the technical solutions described in the embodiments of the present application are applicable to vehicles, which may be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned vehicles.

[0093] For the convenience of description, the following embodiments are described by taking a new energy vehicle as an example.

[0094] Please refer to Figure 1 , Figure 1 This is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 includes a steering mechanism 100 , and the vehicle 1000 achieves steering through the steering mechanism 100 .

[0095] In some embodiments, the vehicle 1000 further includes a battery 200, which may be disposed at the bottom, head, or tail of the vehicle 1000. The battery 200 may be used to power the vehicle 1000, for example, the battery 200 may be used as an operating power source for the vehicle 1000.

[0096] The vehicle 1000 may further include a controller 300 and a motor 400 , wherein the controller 300 is used to control the battery 200 to supply power to the motor 400 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0097] In some embodiments, the battery 200 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0098] The battery 200 provided in the embodiment of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery 200 mentioned in the present application may include a battery module or a battery pack. The battery 200 generally includes a box for encapsulating one or more battery cells, and the box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0099] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0100] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can be passed without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the separator can be PP or PE, etc. In addition, the electrode assembly can be a winding structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0101] Please refer to Figure 2-Figure 4 , Figure 2 This is a schematic structural diagram of a steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are not deflected) provided in some embodiments of the present application. Figure 3 This is a schematic structural diagram of a steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are deflected to the left) provided in some embodiments of the present application. Figure 4 The steering mechanism 100 provided in some embodiments of the present application (the first steering wheel 10 and the second steering wheel 20 are deflected to the right). The steering mechanism 100 provided in the embodiment of the present application includes a first steering wheel 10, a second steering wheel 20, a first driving device 30 and a second driving device 40. The first driving device 30 is connected to the first steering wheel 10, and the second driving device 40 is connected to the second steering wheel 20. The first driving device 30 and the second driving device 40 are respectively used to drive the first steering wheel 10 and the second steering wheel 20 separately, so that the first steering wheel 10 and the second steering wheel 20 are deflected in the same direction to achieve steering.

[0102] In the above-mentioned steering mechanism 100, the first driving device 30 and the second driving device 40 are respectively driven to deflect in the same direction. There is no linkage relationship between the two steering wheels, and the two steering wheels do not need to be connected through a complex mechanical transmission mechanism, which simplifies the structure of the steering mechanism 100.

[0103] In addition, since the first drive device 30 and the second drive device 40 can control the first steering wheel 10 and the second steering wheel 20 separately, the first steering wheel 10 and the second steering wheel 20 are independent of each other and do not interfere with each other during the steering process. During the steering process, the deflection angle of the first steering wheel 10 driven by the first drive device 30 and the deflection angle of the second steering wheel 20 driven by the second drive device 40 can be the same or different, thereby improving the steering operability of the steering mechanism 100.

[0104] The steering mechanism 100 may further include a vehicle frame 60, and the first driving device 30 and the second driving device 40 may be both mounted on the vehicle frame 60 to secure the first steering wheel 10 and the second steering wheel 20 to the vehicle frame 60. During the steering process of the vehicle 1000, it can be considered that the first steering wheel 10 and the second steering wheel 20 are deflected relative to the vehicle frame 60. Figure 2 , Figure 3 and Figure 4 In the embodiment, the first steering wheel 10 is located on the left side of the second steering wheel 20.

[0105] Among them, the first steering wheel 10 may include a first wheel 11 and a first connecting frame 12. The first wheel 11 is rotatably arranged on the first connecting frame 12. The first wheel 11 can rotate around its own axis relative to the first connecting frame 12. The first driving device 30 is connected to the first connecting frame 12. When the first driving device 30 drives the first connecting frame 12 to deflect, the first wheel 11 will follow the first connecting frame 12 to deflect, thereby realizing the deflection of the first steering wheel 10.

[0106] The second steering wheel 20 may include a second wheel 21 and a second connecting frame 22. The second wheel 21 is rotatably arranged on the second connecting frame 22. The second wheel 21 can rotate around its own axis relative to the second connecting frame 22. The second driving device 40 is connected to the second connecting frame 22. When the second driving device 40 drives the second connecting frame 22 to deflect, the second wheel 21 will follow the second connecting frame 22 to deflect, thereby realizing the deflection of the second steering wheel 20.

[0107] In some embodiments, please refer to Figure 2-Figure 4 The first driving device 30 may include two first hydraulic cylinders 31, which are spaced apart and distributed on the same side of the first steering wheel 10, one first hydraulic cylinder 31 is used to push the first steering wheel 10, and the other first hydraulic cylinder 31 is used to pull the first steering wheel 10 to drive the first steering wheel 10 to deflect.

[0108] The two first hydraulic cylinders 31 drive the first steering wheel 10 to deflect by a push-and-pull method. The two first hydraulic cylinders 31 can provide a greater steering force for the first steering wheel 10 and make the first steering wheel 10 more stable during the deflection and steering process.

[0109] For the convenience of description, the two first hydraulic cylinders 31 are defined as the first front hydraulic cylinder 32 and the first rear hydraulic cylinder 33, respectively. It can be understood that the two first hydraulic cylinders 31 are arranged front and back, and the first front hydraulic cylinder 32 is located in front of the first rear hydraulic cylinder 33. The two first hydraulic cylinders 31 drive the first steering wheel 10 to deflect in a push-pull manner, which can be understood as follows: when the first front hydraulic cylinder 32 pushes the first steering wheel 10 to deflect, the first rear hydraulic cylinder 33 pulls the first steering wheel 10, and when the first front hydraulic cylinder 32 pulls the first steering wheel 10 to deflect, the first rear hydraulic cylinder 33 pushes the first steering wheel 10.

[0110] The piston rod of each first hydraulic cylinder 31 is connected to the first steering wheel 10. Specifically, the piston rod of each first hydraulic cylinder 31 is hinged to the first connecting frame 12 of the first steering wheel 10. Each first hydraulic cylinder 31 includes a first chamber 311 into which liquid is added to make the piston rod extend, and a second chamber 312 into which liquid is added to make the piston rod retract. If liquid is added to the first chamber 311 of the first front hydraulic cylinder 32, the piston rod of the first front hydraulic cylinder 32 extends, and the first front hydraulic cylinder 32 pushes the first steering wheel 10 to deflect; if liquid is added to the second chamber 312 of the first front hydraulic cylinder 32, the piston rod of the first front hydraulic cylinder 32 retracts, and the first front hydraulic cylinder 32 pulls the first steering wheel 10 to deflect. Similarly, if liquid is added to the first chamber 311 of the first rear hydraulic cylinder 33, the piston rod of the first rear hydraulic cylinder 33 extends, and the first rear hydraulic cylinder 33 pushes the first steering wheel 10 to deflect; if liquid is added to the second chamber 312 of the first rear hydraulic cylinder 33, the piston rod of the first rear hydraulic cylinder 33 retracts, and the first rear hydraulic cylinder 33 pulls the first steering wheel 10 to deflect.

[0111] In this embodiment, the cylinder bodies of the two first hydraulic cylinders 31 can be directly fixed on the frame 60. Since the first steering wheel 10 is deflected by the two first hydraulic cylinders 31 in a push-pull manner, there is no need to establish a rotation connection relationship between the first steering wheel 10 and the frame 60. Of course, in other embodiments, please refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of the steering mechanism 100 provided in another embodiment of the present application, wherein the first connecting frame 12 of the first steering wheel 10 can also be rotatably connected to the vehicle frame 60 through the first rotating shaft 13, and during the steering process, the first steering wheel 10 will rotate around the first rotating shaft 13. In this case, the cylinder bodies of the two first hydraulic cylinders 31 can be hinged to the vehicle frame 60.

[0112] It should be noted that, in other embodiments, the first hydraulic cylinders 31 in the first driving device 30 may also be other numbers. For example, when the first connecting frame 12 of the first steering wheel 10 is rotatably connected to the vehicle frame 60 via the first rotating shaft 13, the first hydraulic cylinder 31 may be one. Of course, the first driving device 30 may also be other structures. For example, the first driving device 30 is a motor that drives the first steering wheel 10 to deflect.

[0113] In some embodiments, please refer to Figure 2-Figure 4 The second driving device 40 may include two second hydraulic cylinders 41, which are spaced apart and distributed on the same side of the second steering wheel 20, one second hydraulic cylinder 41 is used to push the second steering wheel 20, and the other second hydraulic cylinder 41 is used to pull the second steering wheel 20 to drive the second steering wheel 20 to deflect.

[0114] The second steering wheel 20 is driven to deflect by the two second hydraulic cylinders 41 in a push-and-pull manner. The two second hydraulic cylinders 41 can provide a greater steering force for the second steering wheel 20 and make the deflection and steering process of the second steering wheel 20 smoother.

[0115] For the convenience of description, the two second hydraulic cylinders 41 are defined as the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43, respectively. It can be understood that the two second hydraulic cylinders 41 are arranged front and rear, and the second hydraulic cylinder 41 is located in front of the second rear hydraulic cylinder 43. The two second hydraulic cylinders 41 drive the second steering wheel 20 to deflect in a push-pull manner, which can be understood as follows: when the second front hydraulic cylinder 42 pushes the second steering wheel 20 to deflect, the second rear hydraulic cylinder 43 pulls the second steering wheel 20, and when the second front hydraulic cylinder 42 pulls the second steering wheel 20 to deflect, the second rear hydraulic cylinder 43 pushes the second steering wheel 20.

[0116] The piston rod of each second hydraulic cylinder 41 is connected to the second steering wheel 20. Specifically, the piston rod of each second hydraulic cylinder 41 is hinged to the second connecting frame 22 of the second steering wheel 20. Each second hydraulic cylinder 41 includes a third chamber 411 into which liquid is added to extend the piston rod, and a fourth chamber 412 into which liquid is added to retract the piston rod. If liquid is added to the third chamber 411 of the second front hydraulic cylinder 42, the piston rod of the second front hydraulic cylinder 42 extends, and the second front hydraulic cylinder 42 pushes the second steering wheel 20 to deflect; if liquid is added to the fourth chamber 412 of the second front hydraulic cylinder 42, the piston rod of the second front hydraulic cylinder 42 retracts, and the second front hydraulic cylinder 42 pulls the second steering wheel 20 to deflect. Similarly, if liquid enters the third chamber 411 of the second rear hydraulic cylinder 43, the piston rod of the second rear hydraulic cylinder 43 extends, and the second rear hydraulic cylinder 43 pushes the second steering wheel 20 to deflect; if liquid enters the fourth chamber 412 of the second rear hydraulic cylinder 43, the piston rod of the second rear hydraulic cylinder 43 retracts, and the second front hydraulic cylinder 42 pulls the second steering wheel 20 to deflect.

[0117] Optionally, the first front hydraulic cylinder 32, the first rear hydraulic cylinder 33, the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43 are all located between the first steering wheel 10 and the second steering wheel 20, that is, the first front hydraulic cylinder 32 and the first rear hydraulic cylinder 33 are both arranged on the inner side of the first steering wheel 10, and the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43 are both arranged on the inner side of the second steering wheel 20. This structure makes the steering mechanism 100 compact and reduces the space occupied.

[0118] like Figure 3 As shown, when the first steering wheel 10 and the second steering wheel 20 deflect to the left in the same direction, the first front hydraulic cylinder 32 is used to push the first steering wheel 10, the first rear hydraulic cylinder 33 is used to pull the first steering wheel 10, the second front hydraulic cylinder 42 is used to pull the second steering wheel 20, and the second rear hydraulic cylinder 43 is used to push the second steering wheel 20.

[0119] like Figure 4 As shown, when the first steering wheel 10 and the second steering wheel 20 deflect to the right in the same direction, the first front hydraulic cylinder 32 is used to pull the first steering wheel 10, the first rear hydraulic cylinder 33 is used to push the first steering wheel 10, the second front hydraulic cylinder 42 is used to push the second steering wheel 20, and the second rear hydraulic cylinder 43 is used to pull the second steering wheel 20.

[0120] In this embodiment, the cylinder bodies of the two second hydraulic cylinders 41 can be directly fixed on the frame 60. Since the second steering wheel 20 is deflected by the two second hydraulic cylinders 41 in a push-pull manner, there is no need to establish a rotation connection relationship between the second steering wheel 20 and the frame 60. Of course, in other embodiments, please continue to refer to Figure 5 The second connecting frame 22 of the second steering wheel 20 can also be rotatably connected to the vehicle frame 60 through the second rotating shaft 23. During the steering process, the second steering wheel 20 will rotate around the second rotating shaft 23. In this case, the cylinder bodies of the two second hydraulic cylinders 41 can be hinged to the vehicle frame 60.

[0121] It should be noted that in yet another embodiment, the second hydraulic cylinder 41 in the second driving device 40 may also be of other numbers. For example, when the second connecting frame 22 of the second steering wheel 20 is rotatably connected to the frame 60 via the second rotating shaft 23, the second hydraulic cylinder 41 may be set to one. Of course, the second driving device 40 may also be of other structures. For example, the second driving device 40 is a motor that drives the second steering wheel 20 to deflect.

[0122] In some embodiments, please refer to Figure 6 , Figure 6The structural schematic diagram of the steering mechanism 100 provided in some other embodiments of the present application, the steering mechanism 100 may also include a hydraulic control system 50, the hydraulic control system 50 is used to supply fluid to the first drive device 30 and the second drive device 40, so that the first drive device 30 and the second drive device 40 separately drive the first steering wheel 10 and the second steering wheel 20, so that the first steering wheel 10 and the second steering wheel 20 are deflected in the same direction to achieve steering.

[0123] It is understandable that the first drive device 30 and the second drive device 40 are hydraulic actuators, and under the action of the hydraulic control system 50, the first drive device 30 and the second drive device 40 can provide a large driving force for the first steering wheel 10 and the second steering wheel 20. In the above embodiments, the first front hydraulic cylinder 32, the first rear hydraulic cylinder 33, the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43 are all hydraulic actuators. The following takes the hydraulic control system 50 supplying fluid to the first front hydraulic cylinder 32, the first rear hydraulic cylinder 33, the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43 as an example, and the specific structure of the hydraulic control system 50 is described in detail.

[0124] In some embodiments, please refer to Figure 7-Figure 9 , Figure 7 A schematic structural diagram of a steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are not deflected) provided in some other embodiments of the present application; Figure 8 A schematic structural diagram of a steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are deflected to the left) provided in some other embodiments of the present application; Fig. 9 The schematic diagram of the structure of the steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are deflected to the right) provided in some other embodiments of the present application. The hydraulic control system 50 may include a steering control device 51, a steering member 52 and a hydraulic supply device 53.

[0125] The steering control device 51 has a first working state and a second working state. The steering member 52 is transmission-connected to the steering control device 51, and the steering member 52 is used to control the steering control device 51 to switch between the first working state and the second working state.

[0126] like Figure 8 As shown, the fluid supply device 53 is used to supply fluid to the first drive device 30 and the second drive device 40 when the steering control device 51 is in the first working state, so that the first drive device 30 and the second drive device 40 respectively drive the first steering wheel 10 and the second steering wheel 20 to deflect to the left in the same direction.

[0127] like Fig. 9As shown, the fluid supply device 53 is also used to supply fluid to the first drive device 30 and the second drive device 40 when the steering control device 51 is in the second working state, so that the first drive device 30 and the second drive device 40 respectively drive the first steering wheel 10 and the second steering wheel 20 to deflect to the right in the same direction.

[0128] The steering control device 51 can be controlled by the steering member 52 so that the steering control device 51 is in the first working state or the second working state, so that the fluid supply device 53 supplies fluid to the first drive device 30 and the second drive device 40, so as to realize the first steering wheel 10 and the second steering wheel 20 to deflect to the left or right in the same direction. The hydraulic control system 50 of this structure can realize steering by operating the steering member 52, and the overall structure is simple and the steering operation is convenient.

[0129] The liquid supply device 53 may include a hydraulic pump 531 and a liquid storage tank 532. The hydraulic pump 531 is used to pump the liquid in the liquid storage tank 532 into the steering control device 51. The hydraulic pump 531 may be driven by a driving motor 533. The liquid in the liquid storage tank 532 may be oil.

[0130] The steering member 52 may be a steering wheel, and the steering control device 51 may be switched between the first working state and the second working state by rotating the steering wheel.

[0131] The steering control device 51 may have various structures as long as it can switch the fluid path to achieve the steering of the first steering wheel 10 and the second steering wheel 20 .

[0132] In some embodiments, please refer to Figure 10-12 , Fig.10 A schematic structural diagram of a steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are not deflected) provided in some other embodiments of the present application; Fig.11 A schematic structural diagram of a steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are deflected to the left) provided in some other embodiments of the present application; Fig.12 Schematic diagram of the structure of the steering mechanism 100 (the first steering wheel 10 and the second steering wheel 20 are deflected to the right) provided in other embodiments of the present application. The steering control device 51 may include a first reversing valve 511 and a second reversing valve 512, the first reversing valve 511 is connected to the first drive device 30 through a first pipeline 5111 and a second pipeline 5112, and the second reversing valve 512 is connected to the second drive device 40 through a third pipeline 5121 and a fourth pipeline 5122.

[0133] The steering member 52 is used to switch the positions of the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512 so that the steering control device 51 is in the first working state or the second working state.

[0134] like Fig.11As shown, when the steering control device 51 is in the first working state, the first pipeline 5111 and the third pipeline 5121 are liquid inlet pipelines, and the second pipeline 5112 and the fourth pipeline 5122 are liquid return pipelines; Fig.12 As shown, when the steering control device 51 is in the second working position, the first pipeline 5111 and the third pipeline 5121 are liquid return pipelines, and the second pipeline 5112 and the fourth pipeline 5122 are liquid inlet pipelines.

[0135] The steering member 52 can be connected to the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512 through a transmission mechanism to transmit the rotational force of the steering member 52 to the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512, so that the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512 move to change the working state of the first reversing valve 511 and the second reversing valve 512. The transmission mechanism can be in various structural forms, such as a rack and pinion mechanism.

[0136] Optionally, the first chamber 311 of the first front hydraulic cylinder 32 and the second chamber 312 of the first rear hydraulic cylinder 33 are both in communication with the first pipeline 5111, and the second chamber 312 of the first front hydraulic cylinder 32 and the first chamber 311 of the first rear hydraulic cylinder 33 are both in communication with the second pipeline 5112. The third chamber 411 of the second front hydraulic cylinder 42 and the fourth chamber 412 of the second rear hydraulic cylinder 43 are in communication with the fourth pipeline 5122, and the fourth chamber 412 of the second front hydraulic cylinder 42 and the third chamber 411 of the second rear hydraulic cylinder 43 are in communication with the third pipeline 5121.

[0137] like Fig.11As shown, when the steering control device 51 is in the first working state, since the first pipeline 5111 and the third pipeline 5121 are liquid inlet pipelines, and the second pipeline 5112 and the fourth pipeline 5122 are liquid return pipelines, the first chamber 311 of the first front hydraulic cylinder 32 and the second chamber 312 of the first rear hydraulic cylinder 33 are supplied with liquid through the first pipeline 5111, and the fourth chamber 412 of the second front hydraulic cylinder 42 and the third chamber 411 of the second rear hydraulic cylinder 43 are supplied with liquid through the third pipeline 5121, and the liquid in the second chamber 312 of the first front hydraulic cylinder 32 and the first chamber 311 of the first rear hydraulic cylinder 33 flows back through the second pipeline 5112 and finally flows back into the liquid storage tank 532, and the liquid in the third chamber 411 of the second front hydraulic cylinder 42 and the fourth chamber 412 of the second rear hydraulic cylinder 43 flows back through the second pipeline 5112 and finally flows back into the liquid storage tank 532. During this process, the piston rod of the first front hydraulic cylinder 32 extends to apply a thrust to the first steering wheel 10; the piston rod of the first rear hydraulic cylinder 33 retracts to apply a pulling force to the first steering wheel 10; the piston rod of the second front hydraulic cylinder 42 retracts to apply a pulling force to the second steering wheel 20; the piston rod of the second rear hydraulic cylinder 43 extends to apply a thrust to the second steering wheel 20. Finally, the first steering wheel 10 and the second steering wheel 20 are deflected to the left.

[0138] like Fig.12 As shown, when the steering control device 51 is in the second working state, since the first pipeline 5111 and the third pipeline 5121 are return pipelines, and the second pipeline 5112 and the fourth pipeline 5122 are inlet pipelines, the second chamber 312 of the first front hydraulic cylinder 32 and the first chamber 311 of the first rear hydraulic cylinder 33 are inlet with liquid through the second pipeline 5112, and the third chamber 411 of the second front hydraulic cylinder 42 and the fourth chamber 412 of the second rear hydraulic cylinder 43 are inlet with liquid through the fourth pipeline 5122. The liquid in the first chamber 311 of the first front hydraulic cylinder 32 and the second chamber 312 of the first rear hydraulic cylinder 33 flows back through the first pipeline 5111 and finally returns to the flow channel liquid storage tank 532. The liquid in the fourth chamber 412 of the second front hydraulic cylinder 42 and the third chamber 411 of the second rear hydraulic cylinder 43 flows back through the fourth pipeline 5122 and finally returns to the flow channel liquid storage tank 532. During this process, the piston rod of the first rear hydraulic cylinder 33 extends to apply a thrust to the first steering wheel 10; the piston rod of the first front hydraulic cylinder 32 retracts to apply a pulling force to the first steering wheel 10; the piston rod of the second rear hydraulic cylinder 43 retracts to apply a pulling force to the second steering wheel 20; the piston rod of the second front hydraulic cylinder 42 extends to apply a thrust to the second steering wheel 20. Finally, the first steering wheel 10 and the second steering wheel 20 are deflected to the right.

[0139] The first reversing valve 511 and the second reversing valve 512 can be three-position four-way reversing valves, and the valve core of the first reversing valve 511 has three positions: left position, middle position and right position. When the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512 are both in the left position, the steering control device 51 is in the first working state, the first pipeline 5111 supplies liquid to the first front hydraulic cylinder 32 and the first rear hydraulic cylinder 33, the third pipeline 5121 supplies liquid to the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43, and the first steering wheel 10 and the second steering wheel 20 deflect to the left; when the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512 are both in the right position, the steering control device 51 is in the second working state, the second pipeline 5112 supplies liquid to the first front hydraulic cylinder 32 and the first rear hydraulic cylinder 33, the fourth pipeline 5122 supplies liquid to the second front hydraulic cylinder 42 and the second rear hydraulic cylinder 43, and the first steering wheel 10 and the second steering wheel 20 deflect to the right. When the valve core of the first reversing valve 511 and the valve core of the second reversing valve 512 are both in the middle position, the first pipeline 5111, the second pipeline 5112, the third pipeline 5121 and the fourth pipeline 5122 are not supplied with fluid, and the first steering wheel 10 and the second steering wheel 20 are not deflected.

[0140] In other embodiments, the steering control device 51 may also be a valve of other structures. For example, the steering control device 51 is a rotary actuated proportional valve, which is a proportional valve that is switched by the rotation of the steering member 52 .

[0141] In some embodiments, please refer to Fig.13 , Fig.13 A structural schematic diagram of a steering mechanism 100 provided in some embodiments of the present application, wherein the hydraulic control system 50 further includes a diverter valve 54, wherein the liquid provided by the liquid supply device 53 flows into the first drive device 30 and the second drive device 40 through the diverter valve 54 and the steering control device 51 in sequence, and the diverter valve 54 is used to adjust the ratio of the flow rate of the liquid flowing from the steering control device 51 into the first drive device 30 and the flow rate of the liquid flowing from the steering control device 51 into the second drive device 40, so as to make the deflection angle of the first steering wheel 10 the same or different from the deflection angle of the second steering wheel 20.

[0142] During actual driving, the flow rate ratio of the liquid flowing into the first drive device 30 and the flow rate of the liquid flowing into the second drive device 40 can be controlled by the diverter valve 54 according to the specific driving conditions, so that the deflection angles of the first steering wheel 10 and the second steering wheel 20 during the steering process are the same or different, thereby improving the handling performance and driving experience.

[0143] The diverter valve 54 can adjust the ratio of the flow rate of the liquid flowing from the steering control device 51 into the first drive device 30 and the flow rate of the liquid flowing from the steering control device 51 into the second drive device 40 when turning according to different vehicle speeds and the rotation direction of the steering member 52. For example, when the vehicle speed is not higher than the first preset value, the steering member 52 rotates forward or backward, and the diverter valve 54 controls the flow rate of the liquid flowing into the first drive device 30 to be equal to the flow rate of the liquid flowing into the second drive device 40, so that the deflection angles of the first steering wheel 10 and the second steering wheel 20 are equal; when the vehicle speed is higher than the first preset value, when the steering member 52 rotates forward, the first steering wheel 10 on the left and the second steering wheel 20 on the right deflect to the left, and the diverter valve 54 controls the flow rate of the liquid flowing into the first drive device 30 to be smaller than the flow rate of the liquid flowing into the second drive device 40, so that the angle of the first steering wheel 10 deflecting to the left is smaller than the angle of the second steering wheel 20 deflecting to the left; when the vehicle speed is higher than the first preset value, when the steering member 52 rotates backward, the first steering wheel 10 on the left and the second steering wheel 20 on the right deflect to the right, and the diverter valve 54 controls the flow rate of the liquid flowing into the second drive device 40 to be smaller than the flow rate of the liquid flowing into the first drive device 30, so that the angle of the second steering wheel 20 deflecting to the right is smaller than the angle of the first steering wheel 10 deflecting to the right.

[0144] The diverter valve 54 has a liquid inlet and a first liquid outlet and a second liquid outlet. The first liquid outlet and the second liquid outlet are respectively connected to the first reversing valve 511 and the second reversing valve 512 through a pipeline 541, and the liquid inlet is connected to the hydraulic pump 531 through a connecting pipe 542. The diverter valve 54 controls the ratio of the flow rate of the liquid flowing into the first drive device 30 to the flow rate of the liquid flowing from the steering control device 51 to the second drive device 40, which is actually to control the ratio of the flow rate of the liquid discharged from the first liquid outlet to the flow rate of the liquid discharged from the second liquid outlet.

[0145] In some embodiments, please refer to Fig.14 , Fig.14 This is a structural schematic diagram of the steering mechanism 100 provided in some further embodiments of the present application, where the hydraulic control system 50 also includes a flow regulating valve 55 , a vehicle speed sensor 56 and a control unit 57 .

[0146] The liquid provided by the liquid supply device 53 flows into the first drive device 30 and the second drive device 40 through the flow regulating valve 55, the diverter valve 54, and the steering control device 51 in sequence. The vehicle speed sensor 56 is used to obtain a vehicle speed signal of the vehicle 1000. The control unit 57 is used to control the flow regulating valve 55 to adjust the flow of the liquid flowing into the diverter valve 54 according to the vehicle speed signal.

[0147] The vehicle speed signal of the vehicle 1000 can be obtained through the vehicle speed sensor 56, and the control unit 57 can control the flow regulating valve 55 according to the vehicle speed signal to adjust the flow of the liquid flowing into the diverter valve 54. If the flow of the liquid flowing into the diverter valve 54 changes, the flow of the liquid flowing into the first drive device 30 and the second drive device 40 through the diverter valve 54 and the steering control device 51 in sequence will also change, so as to change the driving force provided by the first drive device 30 and the second drive device 40 to the first steering wheel 10 and the second steering wheel 20 respectively.

[0148] When the vehicle speed is low (the vehicle speed is not higher than the second preset value, such as, the vehicle speed is not higher than 30 km / h), the vehicle speed sensor 56 obtains a vehicle speed signal indicating a low vehicle speed. If the driver turns through the steering member 52 at this time, the control unit 57 controls the flow regulating valve 55 to increase the flow of liquid flowing into the diverter valve 54, and finally the first drive device 30 and the second drive device 40 provide greater driving force to the first steering wheel 10 and the second steering wheel 20 respectively, so that the first steering wheel 10 and the second steering wheel 20 deflect at a relatively fast speed.

[0149] When the vehicle speed is high (the vehicle speed is higher than the second preset value, such as, the vehicle speed is higher than 30 km / h), the vehicle speed sensor 56 obtains a vehicle speed signal indicating a higher vehicle speed. If the driver turns through the steering member 52 at this time, the control unit 57 controls the flow regulating valve 55 to reduce the flow of liquid flowing into the diverter valve 54, and finally the first drive device 30 and the second drive device 40 provide smaller driving force to the first steering wheel 10 and the second steering wheel 20 respectively, so that the first steering wheel 10 and the second steering wheel 20 deflect at a relatively slow speed, thereby improving safety during high-speed driving.

[0150] The flow regulating valve 55 is disposed on a connecting pipe 542 connected between the hydraulic pump 531 and the liquid inlet of the diverter valve 54. The flow regulating valve 55 may be an electromagnetic flow regulating valve 55.

[0151] The vehicle speed sensor 56 and the flow regulating valve 55 are both electrically connected to a control unit 57 , and the control unit 57 may be an ECU (Electronic Control Unit) of the vehicle 1000 .

[0152] In some embodiments, please refer to Fig.14 The hydraulic control system 50 further includes a torque sensor 58, which is used to obtain a torque signal of the steering member 52. The control unit 57 is also used to control the flow regulating valve 55 to adjust the flow of the liquid flowing into the diverter valve 54 according to the torque signal.

[0153] The torque sensor 58 is electrically connected to the control unit 57 .

[0154] The torque signal of the steering member 52 can be obtained through the torque sensor 58, and the control unit 57 can control the flow regulating valve 55 according to the torque signal to adjust the flow of the liquid flowing into the diverter valve 54. If the flow of the liquid flowing into the diverter valve 54 changes, the flow of the liquid flowing into the first drive device 30 and the second drive device 40 through the diverter valve 54 and the steering control device 51 in sequence will also change, so as to change the driving force provided by the first drive device 30 and the second drive device 40 to the first steering wheel 10 and the second steering wheel 20 respectively.

[0155] When the torque applied by the driver to the steering member 52 during the steering process through the steering member 52 is greater than the preset value, the torque sensor 58 can obtain a torque signal representing the magnitude of the torque applied to the steering member 52, and the control unit 57 controls the flow regulating valve 55 to increase the flow of the liquid flowing into the diverter valve 54, and finally the first drive device 30 and the second drive device 40 provide a larger driving force to the first steering wheel 10 and the second steering wheel 20 respectively, so that the first steering wheel 10 and the second steering wheel 20 deflect at a relatively fast speed; when the torque applied by the driver to the steering member 52 during the steering process through the steering member 52 is less than the preset value, the torque sensor 58 can obtain a torque signal representing the magnitude of the torque applied to the steering member 52, and the control unit 57 controls the flow regulating valve 55 to reduce the flow of the liquid flowing into the diverter valve 54, and finally the first drive device 30 and the second drive device 40 provide a smaller driving force to the first steering wheel 10 and the second steering wheel 20 respectively, so that the first steering wheel 10 and the second steering wheel 20 deflect at a relatively slow speed.

[0156] Please refer to Fig.15 , Fig.15 A schematic block diagram of an apparatus 2000 for preparing a steering mechanism provided in some embodiments of the present application, wherein the preparation of the steering mechanism includes a providing device 1100 and an installing device 1200 .

[0157] The providing device 1100 is used to provide a first steering wheel 10 , a second steering wheel 20 , a first driving device 30 and a second driving device 40 .

[0158] The mounting device 1200 is used to mount the first steering wheel 10 and the second steering wheel 20 on the first driving device 30 and the second driving device 40 respectively.

[0159] The first driving device 30 and the second driving device 40 are respectively used to drive the first steering wheel 10 and the second steering wheel 20 independently, so that the first steering wheel 10 and the second steering wheel 20 are deflected in the same direction to achieve steering.

[0160] Please refer to Fig.16 , Fig.16A flowchart of a method for preparing a steering mechanism 100 provided in some embodiments of the present application, the method for preparing the steering mechanism 100 includes:

[0161] S100: providing a first steering wheel 10, a second steering wheel 20, a first driving device 30 and a second driving device 40;

[0162] S200: Installing the first steering wheel 10 on the first driving device 30;

[0163] S300 : Install the second steering wheel 20 on the second driving device 40 .

[0164] The first driving device 30 and the second driving device 40 are respectively used to drive the first steering wheel 10 and the second steering wheel 20 independently, so that the first steering wheel 10 and the second steering wheel 20 are deflected in the same direction to achieve steering.

[0165] It should be noted that the above step S200 may be performed before step S300 or after step S300.

[0166] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0167] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A steering mechanism, characterized in that: include: First steering wheel; Second steering wheel; A first driving device connected to the first steering wheel; as well as A second driving device connected to the second steering wheel; The first driving device and the second driving device are used to drive the first steering wheel and the second steering wheel separately, respectively, so that the first steering wheel and the second steering wheel are deflected in the same direction to achieve steering; The steering mechanism also includes: a hydraulic control system, configured to supply fluid to the first drive device and the second drive device, so that the first drive device and the second drive device drive the first steering wheel and the second steering wheel separately, respectively, so that the first steering wheel and the second steering wheel deflect in the same direction; The hydraulic control system comprises: A steering control device having a first working state and a second working state; a steering member, drivingly connected to the steering control device, the steering member being used to control the steering control device to switch between the first working state and the second working state; and a fluid supply device, used for supplying fluid to the first drive device and the second drive device when the steering control device is in a first working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the left in the same direction; and also used for supplying fluid to the first drive device and the second drive device when the steering control device is in a second working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the right in the same direction; The hydraulic control system further comprises: A diverter valve, wherein the liquid provided by the liquid supply device flows into the first drive device and the second drive device through the diverter valve and the steering control device in sequence, and the diverter valve is used to adjust the ratio of the flow rate of the liquid flowing from the steering control device into the first drive device to the flow rate of the liquid flowing from the steering control device into the second drive device, so that the deflection angle of the first steering wheel is the same or different from the deflection angle of the second steering wheel.

2. The steering mechanism according to claim 1, characterized in that: The first driving device comprises: Two first hydraulic cylinders are spaced apart and distributed on the same side of the first steering wheel. One first hydraulic cylinder is used to push the first steering wheel, and the other first hydraulic cylinder is used to pull the first steering wheel to drive the first steering wheel to deflect.

3. The steering mechanism according to claim 2, characterized in that: The second driving device comprises: Two second hydraulic cylinders are spaced apart and distributed on the same side of the second steering wheel. One second hydraulic cylinder is used to push the second steering wheel, and the other second hydraulic cylinder is used to pull the second steering wheel to drive the second steering wheel to deflect.

4. The steering mechanism according to claim 3, characterized in that: The two first hydraulic cylinders include a first front hydraulic cylinder and a first rear hydraulic cylinder, the two second hydraulic cylinders include a second front hydraulic cylinder and a second rear hydraulic cylinder, the first front hydraulic cylinder, the first rear hydraulic cylinder, the second front hydraulic cylinder and the second rear hydraulic cylinder are all located between the first steering wheel and the second steering wheel; When the first steering wheel and the second steering wheel deflect to the left in the same direction, the first front hydraulic cylinder is used to push the first steering wheel, the first rear hydraulic cylinder is used to pull the first steering wheel, the second front hydraulic cylinder is used to pull the second steering wheel, and the second rear hydraulic cylinder is used to push the second steering wheel; When the first steering wheel and the second steering wheel deflect to the right in the same direction, the first front hydraulic cylinder is used to pull the first steering wheel, the first rear hydraulic cylinder is used to push the first steering wheel, the second front hydraulic cylinder is used to push the second steering wheel, and the second rear hydraulic cylinder is used to pull the second steering wheel.

5. The steering mechanism according to claim 1, characterized in that: The hydraulic control system further comprises: A flow regulating valve, wherein the liquid provided by the liquid supply device flows into the first drive device and the second drive device through the flow regulating valve, the diverter valve, and the steering control device in sequence; A vehicle speed sensor, used to obtain a vehicle speed signal; and The control unit is used to control the flow regulating valve to adjust the flow of the liquid flowing into the diverter valve according to the vehicle speed signal.

6. The steering mechanism according to claim 5, characterized in that: The hydraulic control system further comprises: A torque sensor, used for obtaining a torque signal of the steering member; The control unit is further configured to control the flow regulating valve to regulate the flow of the liquid flowing into the diverter valve according to the torque signal.

7. The steering mechanism according to any one of claims 1 to 6, characterized in that: The steering control device comprises: A first reversing valve connected to the first driving device through a first pipeline and a second pipeline; and a second reversing valve, connected to the second driving device through a third pipeline and a fourth pipeline; The steering member is used to switch the positions of the valve core of the first reversing valve and the valve core of the second reversing valve, so that the steering control device is in a first working state or a second working state; When the steering control device is in a first working state, the first pipeline and the third pipeline are liquid inlet pipelines, and the second pipeline and the fourth pipeline are liquid return pipelines; When the steering control device is in the second working position, the first pipeline and the third pipeline are liquid return pipelines, and the second pipeline and the fourth pipeline are liquid inlet pipelines.

8. The steering mechanism according to claim 7, characterized in that: The first driving device comprises: Two first hydraulic cylinders are spaced apart and distributed on the same side of the first steering wheel, the piston rod of each first hydraulic cylinder is connected to the first steering wheel, and each first hydraulic cylinder includes a first chamber for extending the piston rod by fluid inflow and a second chamber for retracting the piston rod by fluid inflow; The first chamber of a first hydraulic cylinder and the second chamber of another first hydraulic cylinder are in communication with the first pipeline, and the second chamber of the first hydraulic cylinder and the first chamber of the other first hydraulic cylinder are in communication with the second pipeline.

9. The steering mechanism according to claim 8, characterized in that: The second driving device comprises: Two second hydraulic cylinders are spaced apart and distributed on the same side of the second steering wheel, the piston rod of each second hydraulic cylinder is connected to the second steering wheel, and each second hydraulic cylinder includes a third chamber for extending the piston rod when liquid is added, and a fourth chamber for retracting the piston rod when liquid is added; The third chamber of one second hydraulic cylinder and the fourth chamber of another second hydraulic cylinder are in communication with the third pipeline, and the fourth chamber of one second hydraulic cylinder and the third chamber of another second hydraulic cylinder are in communication with the fourth pipeline.

10. A vehicle, characterized in that: Comprising a steering mechanism according to any one of claims 1-9.

11. A device for preparing a steering mechanism, characterized in that: The equipment for preparing the steering mechanism comprises: providing means for providing a first steering wheel, a second steering wheel, a first drive device, and a second drive device; and A mounting device, used for mounting the first steering wheel and the second steering wheel on the first driving device and the second driving device respectively; The first driving device and the second driving device are used to drive the first steering wheel and the second steering wheel separately, respectively, so that the first steering wheel and the second steering wheel are deflected in the same direction to achieve steering; The providing device is also used for: providing a hydraulic control system, the hydraulic control system being used to supply fluid to the first drive device and the second drive device, so that the first drive device and the second drive device drive the first steering wheel and the second steering wheel separately, respectively, so that the first steering wheel and the second steering wheel deflect in the same direction; The hydraulic control system comprises: A steering control device having a first working state and a second working state; a steering member, drivingly connected to the steering control device, the steering member being used to control the steering control device to switch between the first working state and the second working state; and a fluid supply device, used for supplying fluid to the first drive device and the second drive device when the steering control device is in a first working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the left in the same direction; and also used for supplying fluid to the first drive device and the second drive device when the steering control device is in a second working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the right in the same direction; The hydraulic control system further comprises: A diverter valve, wherein the liquid provided by the liquid supply device flows into the first drive device and the second drive device through the diverter valve and the steering control device in sequence, and the diverter valve is used to adjust the ratio of the flow rate of the liquid flowing from the steering control device into the first drive device to the flow rate of the liquid flowing from the steering control device into the second drive device, so that the deflection angle of the first steering wheel is the same or different from the deflection angle of the second steering wheel.

12. A method for preparing a steering mechanism, characterized in that: The method for preparing the steering mechanism comprises: Providing a first steering wheel, a second steering wheel, a first driving device and a second driving device; installing the first steering wheel on the first driving device; installing the second steering wheel on the second driving device; The first driving device and the second driving device are used to drive the first steering wheel and the second steering wheel separately, respectively, so that the first steering wheel and the second steering wheel are deflected in the same direction to achieve steering; providing a hydraulic control system, supplying fluid to the first drive device and the second drive device through the hydraulic control system, so that the first drive device and the second drive device drive the first steering wheel and the second steering wheel separately, so that the first steering wheel and the second steering wheel deflect in the same direction; Wherein, the hydraulic control system comprises: A steering control device having a first working state and a second working state; a steering member, drivingly connected to the steering control device, the steering member being used to control the steering control device to switch between the first working state and the second working state; and a fluid supply device, used for supplying fluid to the first drive device and the second drive device when the steering control device is in a first working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the left in the same direction; and also used for supplying fluid to the first drive device and the second drive device when the steering control device is in a second working state, so that the first drive device and the second drive device respectively drive the first steering wheel and the second steering wheel to deflect to the right in the same direction; The hydraulic control system further comprises: A diverter valve, wherein the liquid provided by the liquid supply device flows into the first drive device and the second drive device through the diverter valve and the steering control device in sequence, and the diverter valve is used to adjust the ratio of the flow rate of the liquid flowing from the steering control device into the first drive device to the flow rate of the liquid flowing from the steering control device into the second drive device, so that the deflection angle of the first steering wheel is the same or different from the deflection angle of the second steering wheel.

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