Steering system and vehicle

Abstract

The application relates to the technical field of vehicles, in particular to a steering system and a vehicle. The steering system comprises a power steering part and a steering assist part. The power steering part comprises a control valve, a first output shaft and two power cylinders. The control valve is connected with one of the two power cylinders. The two power cylinders are connected with the first output shaft. The first output shaft is used for being connected with a steering axle. The steering assist part comprises an assist body and a second output shaft arranged on the assist body. The second output shaft is used for being connected with the steering axle. The two power cylinders are configured to jointly drive the first output shaft and the second output shaft to assist the steering axle in a first direction when the control valve rotates. The two power cylinders are also configured to jointly drive the first output shaft and the second output shaft to assist the steering axle in a second direction when the control valve reversely rotates. The steering system and the vehicle provided by the application increase steering assist and reduce the possibility of oil leakage, thereby improving safety.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a steering system and a vehicle. Background Technology

[0002] The steering axle is part of the vehicle chassis and is mainly used to support and connect the wheels and drive the wheels to rotate relative to the vehicle body.

[0003] In the prior art, a power steering system and a power steering cylinder are installed on the vehicle chassis. The power steering cylinder is connected to the power steering system, which is connected to the steering axle via a steering rocker arm. The power steering cylinder is connected to the steering rocker arm. The power steering system has a hydraulic cylinder that outputs torque under hydraulic pressure to provide steering assistance to the steering axle through the steering rocker arm. The hydraulic cylinder also distributes hydraulic fluid to the power steering cylinder so that the power steering cylinder provides additional assistance to the steering axle.

[0004] Because heavy-duty mining trucks require greater power steering to meet steering demands, this typically necessitates increasing the hydraulic pressure in the hydraulic cylinders. However, increasing the hydraulic pressure can easily lead to leaks, posing a safety hazard. Utility Model Content

[0005] This application provides a steering system and vehicle that increases steering assistance and reduces the possibility of fluid leakage, thereby improving safety.

[0006] In a first aspect, the steering system provided in this application includes a power steering component and a steering assist component. The power steering component includes a control valve, a first output shaft, and two power cylinders. The control valve is connected to one of the two power cylinders, the two power cylinders are interconnected, and both power cylinders are connected to the first output shaft. The first output shaft is used to connect to the steering axle.

[0007] The power steering system includes a power steering body and a second output shaft mounted on the power steering body. Both power cylinders are connected to the power steering body, and the second output shaft is used to connect to the steering axle.

[0008] The two power cylinders are configured to jointly drive the first output shaft to rotate and jointly drive the second output shaft to move away from the power assist body when the control valve is rotated, so that the first output shaft and the second output shaft jointly assist the steering axle in a first direction.

[0009] The two power cylinders are also configured to jointly drive the first output shaft to rotate in the opposite direction when the control valve rotates in the opposite direction, and jointly drive the second output shaft to move toward the power assist body, so that the first output shaft and the second output shaft jointly assist the steering axle in a second direction, which is opposite to the second direction.

[0010] In one possible implementation, the steering system provided in this application further includes a hydraulic component. The power cylinder includes a cylinder body and a first piston. The first piston is disposed in the cylinder body to divide the cylinder body into a first chamber and a second chamber. The first chambers of the two power cylinders are interconnected, and the second chambers of the two power cylinders are interconnected.

[0011] The first piston of both power cylinders is connected to the first output shaft.

[0012] The hydraulic assembly is connected to a control valve, which is configured to connect the hydraulic assembly to the first chamber when the control valve is rotated, so that the hydraulic assembly injects hydraulic oil into the two first chambers and causes the two first pistons to drive the first output shaft to rotate.

[0013] The control valve is also configured to connect the hydraulic assembly to the second chamber when the control valve rotates in the reverse direction, so that the hydraulic assembly injects hydraulic oil into the two second chambers and causes the two first pistons to drive the first output shaft to rotate in the reverse direction.

[0014] In one possible implementation, the steering system provided in this application further includes a second piston connected to a second output shaft; the second piston is disposed within the power steering body to divide the power steering body into a third chamber and a fourth chamber, the second chamber being connected to the third chamber and the first chamber being connected to the fourth chamber.

[0015] When the hydraulic assembly injects hydraulic oil into the two first chambers, a portion of the hydraulic oil enters the fourth chamber through the first chamber to drive the second piston and the second output shaft away from the power assist body.

[0016] As the hydraulic assembly injects hydraulic oil into the two second chambers, a portion of the hydraulic oil passes through the second chambers into the third chamber to drive the second piston and the second output shaft toward the power assist body.

[0017] In one possible implementation, the steering system provided in this application has a first oil passage hole on one of the two cylinders and a second oil passage hole on the other of the two cylinders.

[0018] The first oil passage connects the second chamber and the third chamber, and the second oil passage connects the first chamber and the fourth chamber.

[0019] In one possible implementation, the steering system provided in this application includes a hydraulic component comprising an oil reservoir and a drive pump connected to the oil reservoir, both of which are connected to a control valve.

[0020] In one possible implementation, the steering system provided in this application further includes a heat sink in the hydraulic components, which connects to an oil reservoir and a control valve.

[0021] In one possible implementation, the steering system provided in this application further includes a steering drop arm and a tie rod assembly, with a first output shaft connected to the steering drop arm; the tie rod assembly includes a first tie rod and a second tie rod, with the steering drop arm connected to the steering axle via the first tie rod, and the second output shaft connected to the steering axle via the second tie rod.

[0022] In one possible implementation, the power steering system provided in this application further includes an input shaft connected to a control valve.

[0023] In one possible implementation, the steering system provided in this application further includes an angle actuator and an intermediate drive shaft, one end of which is connected to the input shaft and the other end of which is connected to the angle actuator.

[0024] Secondly, this application also provides a vehicle, including a vehicle body and a steering system provided in the first aspect thereof disposed on the vehicle body.

[0025] This application provides a steering system and a vehicle. The steering system includes a power steering component and a power steering component. The power steering component includes a control valve, a first output shaft, and two power cylinders. The control valve is connected to one of the two power cylinders, and the two power cylinders are interconnected. Both power cylinders are connected to the first output shaft, which is used to connect to the steering axle. The power steering component includes a power steering body and a second output shaft mounted on the power steering body. Both power cylinders are connected to the power steering body, and the second output shaft is used to connect to the steering axle.

[0026] When the control valve rotates, both power cylinders jointly drive the first output shaft to rotate and jointly drive the second output shaft to move away from the power steering body, so that the first and second output shafts together assist the steering axle in a first direction. When the control valve rotates in the opposite direction, both power cylinders jointly drive the first output shaft to rotate in the opposite direction and jointly drive the second output shaft to move towards the power steering body, so that the first and second output shafts together assist the steering axle in a second direction, opposite to the first direction. In this way, the forces of the two power cylinders are superimposed, increasing the power steering assist. Compared with the existing technology of increasing hydraulic pressure to increase output torque, this reduces the possibility of oil leakage and improves safety. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1This is a schematic diagram of the steering system provided in an embodiment of this application;

[0029] Figure 2 Hydraulic principle diagram of the steering system provided in the embodiments of this application Figure 1 ;

[0030] Figure 3 Hydraulic principle diagram of the steering system provided in the embodiments of this application Figure 2 .

[0031] Explanation of reference numerals in the attached figures:

[0032] 10-Steering axle;

[0033] 100 - Power steering component; 110 - Control valve; 120 - First output shaft; 130 - Power cylinder; 131 - Cylinder block; 1311 - First chamber; 1312 - Second chamber; 1313 - First oil passage; 1314 - Second oil passage; 132 - First piston; 140 - Input shaft;

[0034] 200 - Power steering component; 210 - Power steering body; 211 - Third chamber; 212 - Fourth chamber; 220 - Second output shaft; 230 - Second piston;

[0035] 300 - Hydraulic components; 310 - Oil reservoir; 320 - Drive pump; 330 - Heat sink;

[0036] 400-Steering boom;

[0037] 500 - Tie rod assembly; 510 - First tie rod; 511 - Steering tie rod; 512 - Tie rod link; 520 - Second tie rod; 521 - Steering tie rod; 522 - Tie rod link;

[0038] 600-Angle actuator;

[0039] 700 - Intermediate drive shaft.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0042] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0045] As the background section illustrates, in existing technologies, heavy-duty mining trucks require significant power steering to meet steering demands, typically necessitating increased hydraulic cylinder pressure. However, the seals within the hydraulic cylinders (such as O-rings and oil seals) are usually made of rubber or polyurethane, and their design pressure has a certain upper limit. When the hydraulic pressure exceeds the seal's design pressure, the seal may deform, be squeezed, or even rupture, leading to hydraulic oil leakage and posing a safety hazard.

[0046] Based on this, the steering system and vehicle provided in this application include a power steering component and a power steering assist component. The power steering component includes a control valve, a first output shaft, and two power cylinders. The control valve is connected to one of the two power cylinders, and the two power cylinders are interconnected. Both power cylinders are connected to the first output shaft, which is used to connect to the steering axle. The power steering assist component includes a power assist body and a second output shaft mounted on the power assist body. Both power cylinders are connected to the power assist body, and the second output shaft is used to connect to the steering axle.

[0047] When the control valve rotates, both power cylinders jointly drive the first output shaft to rotate and jointly drive the second output shaft to move away from the power steering body, so that the first and second output shafts together assist the steering axle in a first direction. When the control valve rotates in the opposite direction, both power cylinders jointly drive the first output shaft to rotate in the opposite direction and jointly drive the second output shaft to move towards the power steering body, so that the first and second output shafts together assist the steering axle in a second direction, opposite to the first direction. In this way, the forces of the two power cylinders are superimposed, increasing the power steering assist. Compared with the existing technology of increasing hydraulic pressure to increase output torque, this reduces the possibility of oil leakage and improves safety.

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0049] The steering system provided in this application refers to... Figures 1 to 3 As shown, it includes a power steering component 100 and a power steering assist component 200. The power steering component 100 includes a control valve 110, a first output shaft 120 and two power cylinders 130. The control valve 110 is connected to one of the two power cylinders 130. The two power cylinders 130 are interconnected. Both power cylinders 130 are connected to the first output shaft 120. The first output shaft 120 is used to connect to the steering axle 10.

[0050] The power steering component 200 includes a power steering body 210 and a second output shaft 220 disposed on the power steering body 210. Both power cylinders 130 are connected to the power steering body 210, and the second output shaft 220 is used to connect to the steering axle 10.

[0051] The two power cylinders 130 are configured to jointly drive the first output shaft 120 to rotate and jointly drive the second output shaft 220 to move away from the power assist body 210 when the control valve 110 is rotated, so that the first output shaft 120 and the second output shaft 220 jointly assist the steering axle 10 in a first direction.

[0052] The two power cylinders 130 are also configured to jointly drive the first output shaft 120 to rotate in the opposite direction when the control valve 110 rotates in the opposite direction, and jointly drive the second output shaft 220 to move toward the power assist body 210, so that the first output shaft 120 and the second output shaft 220 jointly assist the steering axle 10 in a second direction, the first direction being opposite to the second direction.

[0053] In practical implementation, control valve 110 can be connected to the steering wheel via the steering lever. (See reference...) Figure 2 As shown, the first of the two power cylinders 130 is connected to the control valve 110, and the second of the two power cylinders 130 is located on one side of the first power cylinder 130.

[0054] Reference Figure 2 As shown, when the steering wheel is rotated counterclockwise, the steering wheel drives the control valve 110 to move in a clockwise direction. Figure 2 Rotating in the +W direction as indicated by the middle arrow, since the control valve 110 is connected to the first power cylinder 130, and the first power cylinder 130 is connected to the first output shaft 120, the control valve 110 drives the first power cylinder 130 to apply an along-axis force to the first output shaft 120. Figure 2 The force acts in the opposite direction of Y, as indicated by the middle arrow. Since the first power cylinder 130 is connected to the second power cylinder 130, and the second power cylinder 130 is connected to the first output shaft 120, the first power cylinder 130 drives the second power cylinder 130 to apply an force along the first output shaft 120. Figure 2 The force in the positive direction of Y, indicated by the middle arrow.

[0055] Since the two power cylinders 130 apply forces in opposite directions to the first output shaft 120, the two power cylinders 130 together drive the first output shaft 120 along... Figure 2 The wheel rotates in the +V direction as indicated by the middle arrow to output torque. Since the first output shaft 120 is connected to the steering axle 10, it applies steering assistance in a first direction to the steering axle 10 to drive the wheels to rotate counterclockwise relative to the vehicle body.

[0056] Since both power cylinders 130 are connected to the power steering component 200, the two power cylinders 130 jointly drive the second output shaft 220 of the power steering component 200 in a direction away from the power steering body 210. Figure 2 The wheel moves in the positive direction of X (as indicated by the middle arrow). Since the second output shaft 220 is used to connect with the steering axle 10, the second output shaft 220 applies additional steering assistance in the first direction to the steering axle 10. Together with the first output shaft 120, it drives the wheel to rotate counterclockwise relative to the vehicle body, thus improving the assistance effect.

[0057] Reference Figure 3As shown, when the steering wheel is rotated clockwise, the steering wheel drives the control valve 110 to rotate clockwise. Figure 3 Rotating in the W direction as indicated by the middle arrow, since control valve 110 is connected to the first power cylinder 130, and the first power cylinder 130 is connected to the first output shaft 120, control valve 110 drives the first power cylinder 130 to apply an angle along the first output shaft 120. Figure 2 The force is in the positive direction of Y, indicated by the middle arrow. Since the first power cylinder 130 is connected to the second power cylinder 130, and the second power cylinder 130 is connected to the first output shaft 120, the first power cylinder 130 drives the second power cylinder 130 to apply a force along the first output shaft 120. Figure 2 The force acting in the opposite direction of Y, as indicated by the middle arrow.

[0058] Since the two power cylinders 130 apply forces in opposite directions to the first output shaft 120, the two power cylinders 130 together drive the first output shaft 120 along... Figure 2 The wheel rotates in the -V direction as indicated by the middle arrow to output torque. Since the first output shaft 120 is connected to the steering axle 10, it applies steering assistance in the second direction to the steering axle 10 to drive the wheels to rotate clockwise relative to the vehicle body.

[0059] Since both power cylinders 130 are connected to the power steering component 200, the two power cylinders 130 jointly drive the second output shaft 220 of the power steering component 200 in the direction toward the power steering body 210. Figure 2 (In the opposite direction of X indicated by the middle arrow) the wheel moves, and since the second output shaft 220 is used to connect with the steering axle 10, the second output shaft 220 applies additional steering assistance in the second direction to the steering axle 10, and together with the first output shaft 120 drives the wheel to rotate clockwise relative to the vehicle body, thereby improving the assistance effect.

[0060] It should be noted that by setting two interconnected power cylinders 130, the combined force of the two power cylinders 130 increases the output torque of the first output shaft 120, thereby increasing the power steering assist. Compared with the prior art method of increasing hydraulic pressure to increase output torque, the power steering component 100 provided in this embodiment requires less hydraulic pressure to output the same torque, thereby reducing the possibility of oil leakage and improving safety.

[0061] It should also be noted that the power steering component 200 is connected to the steering axle 10, and the power steering component 200 directly applies force to the steering axle 10, further improving the power steering effect.

[0062] In some embodiments, refer to Figure 2 and Figure 3As shown, the steering system also includes a hydraulic assembly 300. The power cylinder 130 includes a cylinder body 131 and a first piston 132. The first piston 132 is disposed in the cylinder body 131 to divide the cylinder body 131 into a first chamber 1311 and a second chamber 1312. The first chambers 1311 of the two power cylinders 130 are interconnected, and the second chambers 1312 of the two power cylinders 130 are interconnected.

[0063] The first piston 132 of both power cylinders 130 is connected to the first output shaft 120.

[0064] The hydraulic assembly 300 is connected to the control valve 110, which is configured to connect the hydraulic assembly 300 to the first chamber 1311 when the control valve 110 is rotated, so that the hydraulic assembly 300 injects hydraulic oil into the two first chambers 1311 and causes the two first pistons 132 to drive the first output shaft 120 to rotate.

[0065] The control valve 110 is also configured to connect the hydraulic assembly 300 and the second chamber 1312 when the control valve 110 rotates in the reverse direction, so that the hydraulic assembly 300 injects hydraulic oil into the two second chambers 1312 and causes the two first pistons 132 to drive the first output shaft 120 to rotate in the reverse direction.

[0066] It should be noted that the control valve 110 is connected to the first power cylinder 130. In a specific implementation, the control valve 110 can be connected to the first piston 132 of the first power cylinder 130 via a screw and rack transmission pair. The two first pistons 132 can be connected to the first output shaft 120 via a geared rack and pinion transmission pair. Thus, the rotational motion of the control valve 110 can be converted into the linear motion of the first piston 132 via the screw and rack transmission pair, and the linear motion of the two first pistons 132 can be converted into the rotational motion of the first output shaft 120 via the geared rack and pinion transmission pair. Both the screw and rack transmission pair and the geared rack and pinion transmission pair are technologies well known to those skilled in the art and will not be described in detail here.

[0067] Specifically, refer to Figure 2 As shown, when the steering wheel is rotated counterclockwise, the steering wheel drives the control valve 110 to move in a clockwise direction. Figure 2 Rotating in the +W direction as indicated by the middle arrow, control valve 110 connects hydraulic assembly 300 to the first chamber 1311 of the first power cylinder 130. Hydraulic assembly 300 injects hydraulic oil into the first chamber 1311 of the first power cylinder 130. The hydraulic oil in the first chamber 1311 drives the corresponding first piston 132 (along...). Figure 2 Move in the opposite direction of Y (as indicated by the middle arrow).

[0068] Since the first chambers 1311 of the two power cylinders 130 are interconnected, some of the hydraulic oil in the first chamber 1311 of the first power cylinder 130 enters the first chamber 1311 of the second power cylinder 130, and the hydraulic oil in the second first chamber 1311 drives the corresponding first piston 132 (along...). Figure 2 Move in the positive direction of Y (indicated by the middle arrow).

[0069] Since the first pistons 132 of both power cylinders 130 are connected to the first output shaft 120, and the first pistons 132 of the two power cylinders 130 move in opposite directions, the two first pistons 132 exert opposite forces on the first output shaft 120, driving the first output shaft 120 along... Figure 2 The steering axle 10 is rotated in the +V direction as indicated by the middle arrow to apply steering assistance in the first direction.

[0070] Reference Figure 3 As shown, when the steering wheel is rotated clockwise, the steering wheel drives the control valve 110 to rotate clockwise. Figure 2 Rotating in the W direction as indicated by the middle arrow, control valve 110 connects hydraulic assembly 300 to the second chamber 1312 of the first power cylinder 130. Hydraulic assembly 300 injects hydraulic oil into the second chamber 1312 of the first power cylinder 130. The hydraulic oil in the second chamber 1312 of the first cylinder drives the corresponding first piston 132 (along...). Figure 2 Move in the positive direction of Y (indicated by the middle arrow).

[0071] Since the second chambers 1312 of the two power cylinders 130 are interconnected, some of the hydraulic oil in the second chamber 1312 of the first power cylinder 130 enters the second chamber 1312 of the second power cylinder 130, and the hydraulic oil in the second chamber 1312 drives the corresponding first piston 132 (along...). Figure 2 Move in the opposite direction of Y (as indicated by the middle arrow).

[0072] Since the first pistons 132 of both power cylinders 130 are connected to the first output shaft 120, and the first pistons 132 of the two power cylinders 130 move in opposite directions, the two first pistons 132 exert opposite forces on the first output shaft 120, driving the first output shaft 120 along... Figure 2 The steering axle 10 is rotated in the -V direction as indicated by the middle arrow to apply steering assistance in the second direction.

[0073] It should be noted that by setting two power cylinders 130, each with a first piston 132, the total piston area is increased (i.e., the sum of the areas of the two first pistons 132). Due to the increased total piston area, the output torque is increased while the hydraulic pressure remains constant, thereby increasing the power steering assist. In other words, the two first pistons 132 share the task of generating force, thus requiring less hydraulic pressure from each power cylinder 130, reducing the possibility of oil leakage and improving safety.

[0074] In some embodiments, refer to Figure 2 and Figure 3 As shown, the power steering component 200 also includes a second piston 230, which is connected to the second output shaft 220. The second piston 230 is disposed in the power steering body 210 to divide the power steering body 210 into a third chamber 211 and a fourth chamber 212. The second chamber 212 is connected to the third chamber 211, and the first chamber 211 is connected to the fourth chamber 212.

[0075] When the hydraulic assembly 300 injects hydraulic oil into the two first chambers 1311, a portion of the hydraulic oil enters the fourth chamber 212 through the first chamber 1311 to drive the second piston 230 and the second output shaft 220 to move away from the power assist body 210.

[0076] When the hydraulic assembly 300 injects hydraulic oil into the two second chambers 1312, a portion of the hydraulic oil enters the third chamber 211 through the second chambers 1312 to drive the second piston 230 and the second output shaft 220 to move toward the power assist body 210.

[0077] Specifically, refer to Figure 2 As shown, when the hydraulic assembly 300 injects hydraulic oil into the two first chambers 1311, since the first chambers 1311 are connected to the fourth chamber 212, some of the hydraulic oil in the first chambers 1311 enters the fourth chamber 212, and the hydraulic oil in the fourth chamber 212 drives the second piston 230 (along...). Figure 2 The second piston 230 moves in the positive direction of X (indicated by the middle arrow), that is, it moves away from the power steering body 210. Since the second piston 230 is connected to the second output shaft 220, the second piston 230 drives the second output shaft 220 to move synchronously. Furthermore, since the second output shaft 220 is used to connect to the steering axle 10, the second output shaft 220 applies additional steering assistance in the first direction to the steering axle 10, improving the power steering effect.

[0078] Reference Figure 3As shown, when the hydraulic assembly 300 injects hydraulic oil into the two second chambers 1312, since the second chambers 1312 are connected to the third chamber 211, some of the hydraulic oil in the second chambers 1312 enters the third chamber 211, and the hydraulic oil in the third chamber 211 drives the second piston 230 (along...). Figure 2 The second piston 230 moves in the opposite direction of the arrow X (as indicated by the middle arrow), that is, it moves towards the power steering body 210. Since the second piston 230 is connected to the second output shaft 220, the second piston 230 drives the second output shaft 220 to move synchronously. Furthermore, since the second output shaft 220 is used to connect to the steering axle 10, the second output shaft 220 applies additional steering assistance in a second direction to the steering axle 10, improving the power steering effect.

[0079] In some embodiments, refer to Figure 2 and Figure 3 As shown, one of the two cylinders 131 has a first oil passage hole 1313, and the other of the two cylinders 131 has a second oil passage hole 1314.

[0080] The first oil passage 1313 connects the second chamber 1312 and the third chamber 211, and the second oil passage 1314 connects the first chamber 1311 and the fourth chamber 212.

[0081] In a specific implementation, the cylinder body 131 of the first power cylinder 130 has a first oil passage 1313, which communicates with the second chamber 1312 of the first power cylinder 130, meaning the third chamber 211 communicates with the second chamber 1312 of the first power cylinder 130. The cylinder body 131 of the second power cylinder 130 has a second oil passage 1314, which communicates with the first chamber 1311 of the second power cylinder 130, meaning the fourth chamber 212 communicates with the first chamber 1311 of the second power cylinder 130.

[0082] Reference Figure 2 As shown, when the hydraulic assembly 300 injects hydraulic oil into the first chamber 1311 of the first power cylinder 130, since the first chambers 1311 of the two power cylinders 130 are interconnected, a portion of the hydraulic oil in the first chamber 1311 of the first power cylinder 130 enters the first chamber 1311 of the second power cylinder 130. Furthermore, since the first chamber 1311 of the second power cylinder 130 is connected to the fourth chamber 212, a portion of the hydraulic oil in the first chamber 1311 of the second power cylinder enters the fourth chamber 212, thereby driving the second piston 230 (along...). Figure 2 Move in the positive direction of X (indicated by the middle arrow).

[0083] Reference Figure 3As shown, when the hydraulic assembly 300 injects hydraulic oil into the second chamber 1312 of the first power cylinder 130, since the second chamber 1312 of the first power cylinder 130 is connected to the third chamber 211, part of the hydraulic oil in the second chamber 1312 of the first power cylinder 130 enters the third chamber 211 to drive the second piston 230 (along...). Figure 2 Move in the opposite direction of X (as indicated by the middle arrow).

[0084] In some embodiments, refer to Figure 1 and Figure 2 As shown, the hydraulic assembly 300 includes an oil reservoir 310 and a drive pump 320 connected to the oil reservoir 310. Both the drive pump 320 and the oil reservoir 310 are connected to the control valve 110.

[0085] It should be noted that the control valve 110 has an oil inlet channel and an oil outlet channel. When the control valve 110 rotates, it connects the oil inlet channel to the first chamber 1311 of the drive pump 320 and the first power cylinder 130, and connects the oil outlet channel to the oil reservoir 310 and the second chamber 1312 of the first power cylinder 130. When the control valve 110 rotates in the reverse direction, it connects the oil inlet channel to the second chamber 1312 of the first power cylinder 130 of the drive pump 320, and connects the oil outlet channel to the oil reservoir 310 and the first chamber 1311 of the first power cylinder 130. In a specific implementation, the control valve 110 can be a rotary valve, which includes a valve core and a valve sleeve. The oil circuit is changed by relative rotation. Rotary valves are a technology well known to those skilled in the art and will not be described in detail here.

[0086] Reference Figure 2 As shown, in control valve 110 (along...) Figure 2 When the control valve 110 rotates (in the +W direction indicated by the middle arrow), it connects the oil inlet channel to the drive pump 320 and the first chamber 1311 of the first power cylinder 130. The drive pump 320 injects hydraulic oil into the first chamber 1311 of the first power cylinder 130 through the oil inlet channel. Part of the hydraulic oil in the first chamber 1311 of the first power cylinder 130 enters the first chamber 1311 of the second power cylinder 130 to drive the first piston 132 of the second power cylinder 130 (along the +W direction). Figure 2 (The arrow points in the positive direction of Y) The two power cylinders 130 move in the same direction. Since their second chambers 1312 are interconnected, some hydraulic oil from the second chamber 1312 of the second power cylinder 130 enters the second chamber 1312 of the first power cylinder 130. Furthermore, the third chamber 211 is connected to the second chamber 1312 of the first power cylinder 130, and some hydraulic oil from the third chamber 211 enters the second chamber 1312 of the first power cylinder 130.

[0087] At this time, the control valve 110 connects the oil drain channel to the oil reservoir 310 and the second chamber 1312 of the first power cylinder 130. Part of the hydraulic oil in the second chamber 1312 of the first power cylinder 130 enters the oil reservoir 310 through the oil drain channel. This achieves hydraulic oil circulation and ensures that the hydraulic pressure simultaneously drives the first piston 132 of both power cylinders 130 and the second piston 230 of the power steering component 200 to move synchronously. Consequently, the first output shaft 120 and the second output shaft 220 simultaneously assist the steering axle 10 in the first direction.

[0088] Reference Figure 3 As shown, in control valve 110 (along...) Figure 2 When the control valve 110 rotates (in the direction indicated by the middle arrow -W), it connects the oil inlet channel to the drive pump 320 and the second chamber 1312 of the first power cylinder 130. The drive pump 320 injects hydraulic oil into the second chamber 1312 of the first power cylinder 130 through the oil inlet channel. Part of the hydraulic oil in the second chamber 1312 of the first power cylinder 130 enters the second chamber 1312 of the second power cylinder 130 to drive the first piston 132 of the second power cylinder 130 (along the direction indicated by the middle arrow -W). Figure 2 (Moves in the opposite direction of Y as indicated by the middle arrow). Since the first chambers 1311 of the two power cylinders 130 are interconnected, some hydraulic oil from the first chamber 1311 of the second power cylinder 130 enters the first chamber 1311 of the first power cylinder 130. Furthermore, the fourth chamber 212 is connected to the first chamber 1311 of the second power cylinder 130, and some hydraulic oil from the fourth chamber 212 enters the first chamber 1311 of the second power cylinder 130.

[0089] At this time, the control valve 110 connects the oil drain channel to the oil reservoir 310 and the first chamber 1311 of the first power cylinder 130. Part of the hydraulic oil in the first chamber 1311 of the first power cylinder 130 enters the oil reservoir 310 through the oil drain channel. This achieves hydraulic oil circulation and ensures that the hydraulic pressure simultaneously drives the first pistons 132 of both power cylinders 130 and the second piston 230 of the power steering component 200 to move synchronously. Consequently, the first output shaft 120 and the second output shaft 220 simultaneously assist the steering axle 10 in the second direction.

[0090] For example, the oil storage component 310 can be an oil storage tank or an oil storage container, and the embodiments of this application do not impose too many restrictions on it.

[0091] In some embodiments, refer to Figure 1 and Figure 2 As shown, the hydraulic assembly 300 also includes a heat sink 330, which is connected to the oil reservoir 310 and the control valve 110.

[0092] It should be noted that during operation, the hydraulic oil generates a significant amount of heat due to high-pressure flow, mechanical friction, and valve throttling. If this heat is not dissipated in time, the increased oil temperature can lead to decreased oil viscosity, aging of seals, reduced power steering performance, and even oil oxidation and deterioration. By incorporating a heat sink 330, the oil temperature is reduced, ensuring the stability of the power steering and protecting the hydraulic components.

[0093] For example, the heat sink 330 can be an air-cooled heat pipe or a liquid-cooled heat sink, and the embodiments of this application do not impose too many restrictions on it.

[0094] In some embodiments, refer to Figure 1 As shown, the steering system also includes a steering drop arm 400 and a tie rod assembly 500. The first output shaft 120 is connected to the steering drop arm 400. The tie rod assembly 500 includes a first tie rod 510 and a second tie rod 520. The steering drop arm 400 is connected to the steering axle 10 through the first tie rod 510, and the second output shaft 220 is connected to the steering axle 10 through the second tie rod 520.

[0095] In a specific implementation, the first output shaft 120 can be splined to the steering drop arm 400, and a tapered hole can be provided on the steering drop arm 400. The first tie rod 510 can include a steering tie rod 511 and a tie rod joint 512. One end of the steering tie rod 511 is connected to the tapered hole of the steering drop arm 400 through a ball joint assembly, and the other end of the steering tie rod 511 is connected to the tie rod joint 512 through a ball joint assembly. The tie rod joint 512 is connected to the steering axle 10.

[0096] The power steering unit 210 can be installed in the middle of the steering axle 10 via a ball joint assembly. The second tie rod 520 can include a steering tie rod 521 and a tie rod arm 522. The second output shaft 220 is installed on the tie rod arm 522 via a ball joint assembly. One end of the tie rod arm 522 is connected to the steering axle 10, and the other end of the tie rod arm 522 is connected to the steering axle 10 via the steering tie rod 521.

[0097] Understandably, the steering arm 400 converts the rotational motion of the first output shaft 120 into the linear motion of the steering tie rod 511 and tie rod extension 512, thereby steering the wheels. The second output shaft 220 transmits force to the steering tie rod 521 via the tie rod extension 522, ultimately driving the wheels to rotate. Thus, the first output shaft 120 and the second output shaft 220 are connected to the steering axle 10 via the first tie rod 510 and the second tie rod 520 respectively, efficiently transmitting steering assist and ensuring coordinated wheel steering.

[0098] In some embodiments, refer to Figure 2 As shown, the power steering component 100 also includes an input shaft 140, which is connected to the control valve 110.

[0099] In a practical implementation, one end of the input shaft 140 can be connected to the valve core of the control valve 110 through a mechanical structure such as a pin, cam, or spiral groove; the other end of the input shaft 140 can be used to connect to the steering column of the steering wheel.

[0100] Therefore, when the driver turns the steering wheel, the steering column of the steering wheel drives the input shaft 140 to rotate. The rotation of the input shaft 140 drives the valve core of the control valve 110 to move, changing the flow direction of the hydraulic oil, thereby providing steering assistance.

[0101] In some embodiments, refer to Figure 1 and Figure 2 As shown, the steering system also includes an angle actuator 600 and an intermediate drive shaft 700. One end of the intermediate drive shaft 700 is connected to the input shaft 140, and the other end of the intermediate drive shaft 700 is connected to the angle actuator 600.

[0102] It should be noted that when the power steering component 100 is horizontally arranged (i.e., laterally arranged), since the steering column of the steering wheel is generally arranged longitudinally or at an angle, the axis of the steering column and the axis of the input shaft 140 of the power steering component 100 are not on the same straight line.

[0103] By setting the angle transmission device 600, the direction of power transmission can be changed, so that the rotational motion of the steering column can be effectively transmitted to the input shaft 140 of the power steering component 100. By setting the intermediate drive shaft 700, installation errors and frame deformation can be compensated, avoiding jamming or vibration caused by rigid connection.

[0104] Therefore, by setting up the angle transmission 600 and the intermediate transmission shaft 700, the spatial misalignment problem between the horizontal power steering component 100 and the steering column is solved, while providing a flexible connection to ensure the reliability of the steering system and driving comfort.

[0105] This application also provides a vehicle, including a vehicle body and a steering system disposed on the vehicle body.

[0106] It should be noted that the vehicle body consists of the vehicle's basic structural frame and body shell.

[0107] The specific structure and working method of the steering system have been described in detail in the above embodiments, and will not be repeated here.

[0108] Those skilled in the art will understand that the steering system and vehicle provided in this application include a power steering component 100 and a power steering assist component 200. The power steering component 100 includes a control valve 110, a first output shaft 120, and two power cylinders 130. The control valve 110 is connected to one of the two power cylinders 130, and the two power cylinders 130 are interconnected. Both power cylinders 130 are connected to the first output shaft 120, which is used to connect to the steering axle 10. The power steering assist component 200 includes a power assist body 210 and a second output shaft 220 disposed on the power assist body 210. Both power cylinders 130 are connected to the power assist body 210, and the second output shaft 220 is used to connect to the steering axle 10.

[0109] When the control valve 110 rotates, the two power cylinders 130 jointly drive the first output shaft 120 to rotate and jointly drive the second output shaft 220 to move away from the power steering body 210, so that the first output shaft 120 and the second output shaft 220 jointly assist the steering axle 10 in a first direction. When the control valve 110 rotates in the opposite direction, the two power cylinders 130 jointly drive the first output shaft 120 to rotate in the opposite direction and jointly drive the second output shaft 220 to move towards the power steering body 210, so that the first output shaft 120 and the second output shaft 220 jointly assist the steering axle 10 in a second direction, the first direction being opposite to the second direction. In this way, the forces of the two power cylinders 130 are superimposed, increasing the steering assist. Compared with the prior art of increasing hydraulic pressure to increase output torque, this reduces the possibility of oil leakage and improves safety.

[0110] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0112] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A steering system, characterized in that, include: A power steering system, comprising a control valve, a first output shaft, and two power cylinders, wherein the control valve is connected to one of the two power cylinders, the two power cylinders are interconnected, and both power cylinders are connected to the first output shaft, which is used to connect to the steering axle. A power steering component, comprising a power steering body and a second output shaft disposed on the power steering body, wherein both power cylinders are connected to the power steering body, and the second output shaft is used to connect to the steering axle; The two power cylinders are configured to jointly drive the first output shaft to rotate and jointly drive the second output shaft to move away from the power assist body when the control valve rotates, so that the first output shaft and the second output shaft jointly assist the steering axle in a first direction; The two power cylinders are also configured to jointly drive the first output shaft to rotate in the opposite direction and jointly drive the second output shaft to move toward the power assist body when the control valve rotates in the opposite direction, so that the first output shaft and the second output shaft jointly assist the steering axle in a second direction, the first direction being opposite to the second direction.

2. The steering system according to claim 1, characterized in that, It also includes a hydraulic assembly, wherein the power cylinder includes a cylinder body and a first piston, the first piston being disposed in the cylinder body to divide the cylinder body into a first chamber and a second chamber, the first chambers of the two power cylinders being interconnected, and the second chambers of the two power cylinders being interconnected. The first pistons of both power cylinders are connected to the first output shaft; The hydraulic assembly is connected to the control valve, which is configured to connect the hydraulic assembly to the first chamber when the control valve is rotated, so that the hydraulic assembly injects hydraulic oil into the two first chambers and causes the two first pistons to drive the first output shaft to rotate. The control valve is also configured to connect the hydraulic assembly to the second chamber when the control valve rotates in the reverse direction, so that the hydraulic assembly injects hydraulic oil into the two second chambers and causes the two first pistons to drive the first output shaft to rotate in the reverse direction.

3. The steering system according to claim 2, characterized in that, The power steering component further includes a second piston, which is connected to the second output shaft; the second piston is disposed in the power steering body to divide the power steering body into a third chamber and a fourth chamber, the second chamber is connected to the third chamber, and the first chamber is connected to the fourth chamber; When the hydraulic assembly injects the hydraulic oil into the two first chambers, a portion of the hydraulic oil enters the fourth chamber through the first chamber to drive the second piston and the second output shaft to move away from the power assist body; When the hydraulic assembly injects the hydraulic oil into the two second chambers, a portion of the hydraulic oil enters the third chamber through the second chambers to drive the second piston and the second output shaft to move toward the power assist body.

4. The steering system according to claim 3, characterized in that, One of the two cylinders has a first oil passage hole, and the other of the two cylinders has a second oil passage hole; The first oil passage connects the second chamber and the third chamber, and the second oil passage connects the first chamber and the fourth chamber.

5. The steering system according to any one of claims 2 to 4, characterized in that, The hydraulic assembly includes an oil reservoir and a drive pump connected to the oil reservoir. Both the drive pump and the oil reservoir are connected to the control valve.

6. The steering system according to claim 5, characterized in that, The hydraulic assembly also includes a heat sink, which connects the oil reservoir to the control valve.

7. The steering system according to any one of claims 1 to 4, characterized in that, It also includes a steering drop arm and a tie rod assembly, with the first output shaft connected to the steering drop arm; The tie rod assembly includes a first tie rod and a second tie rod. The steering drop arm is connected to the steering axle via the first tie rod, and the second output shaft is connected to the steering axle via the second tie rod.

8. The steering system according to any one of claims 1 to 4, characterized in that, The power steering system also includes an input shaft, which is connected to the control valve.

9. The steering system according to claim 8, characterized in that, It also includes an angle actuator and an intermediate drive shaft, one end of which is connected to the input shaft and the other end of which is connected to the angle actuator.

10. A vehicle, characterized in that, Includes a vehicle body and a steering system as described in any one of claims 1 to 9 disposed on the vehicle body.

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