Multi-shaft linkage oil-gas balance steering suspension system

Abstract

The invention provides a multi-shaft linkage oil-gas balance steering suspension system, and belongs to the technical field of suspension systems. The number of the axles is multiple, and the multiple axles are horizontally arranged and located on the lower side of the frame; the number of the hubs is multiple, the multiple hubs are symmetrically distributed on the lower side of the frame, and tires are fixed to the side ends of the multiple hubs through bolts; the suspension mechanism is arranged between the frame and the axles, in the running process of the vehicle, the output ends of the oil cylinders push the axles to press downwards, so that the tires can make contact with the road surface, oil gas suspension is adopted for replacing steel plate spring suspension, the up-down stroke of the tires is increased, the situation that a single tire is in a suspended state is avoided, and the service life of the tires is prolonged. Instantaneous stress of other tires is prevented from being increased to exceed the bearing limit, the potential safety hazard of tire burst is eliminated, meanwhile, the multiple tires make contact with the ground, the design redundancy in the frame design process can be reduced, and the actual bearing weight of a vehicle is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of suspension systems, and particularly relates to a multi-axis linkage oil-gas balanced steering suspension system. Background Art

[0002] A suspension system is a general term for all force transmission connecting devices between the vehicle frame and the axle or wheels of an automobile. Its main functions are to transmit the forces and torques acting between the wheels and the vehicle frame, buffer the impact force transmitted from the uneven road surface to the vehicle frame or body, and attenuate the resulting vibrations to ensure smooth driving of the automobile, support the weight of the wheels, maintain good contact between the wheels and the ground, ensure that the wheels move within a fixed angle to make the steering stable. The suspension system is mainly divided into two categories: non-independent suspension and independent suspension. The suspension system of a heavy truck usually consists of components such as springs, shock absorbers, and stabilizer bars. These components are connected to the axle and the vehicle body through connecting parts such as suspension arms, ball joints, and hangers.

[0003] The authorized publication number "CN201198273Y" discloses "a novel follow-up load-bearing suspension system for a truck, which includes a driving middle axle. The driving middle axle is connected to a thrust rod, and the other end of the thrust rod is connected to a follow-up rear axle. A balance bridge suspension device is provided between the driving middle axle and the follow-up rear axle. It solves the problem of insufficient bearing capacity of the rear axle of a common 4*2 truck. By applying a balance bridge suspension system to the original rear axle and adding a follow-up load-bearing axle at the back, the bearing capacity of the whole vehicle's rear axle is enhanced to meet the user's needs and avoid wear of the rear axle tires. Compared with a 6*4 vehicle, the rear axle is mainly moved forward, the middle through bridge and the middle drive shaft are cancelled, and a follow-up rear axle is added, reducing the overall vehicle cost and fuel consumption."

[0004] The above-mentioned patent transmits torque to the drive axle tires respectively through the transmission gear set in the drive axle; the rotation of the drive axle tires drives the whole vehicle to run, and the follower axle tires are driven to rotate. Its middle axle drive and rear axle follow-up reduce one inter-axle drive shaft compared with the double-link axle drive, reducing the overall vehicle cost. At the same time, it solves the problem of insufficient bearing capacity of the rear axle of ordinary 4*2 trucks. The suspension system of the balance axle is applied to the original rear axle, and a follower load-bearing axle is added at the back to strengthen the bearing capacity of the whole vehicle's rear axle, meet the user's needs, and avoid wear of the rear axle tires. Compared with 6*4 vehicles, the main improvement is to move the rear axle forward, cancel the middle through axle and the middle drive shaft, and add a follower rear axle, which reduces the overall vehicle cost and fuel consumption. The suspension systems used in the multi-axle frames of existing heavy trucks mostly adopt leaf spring suspensions. When turning uphill, downhill, or on large undulating roads (undulating roads greater than 50mm), due to the adjustment ability of the leaf spring suspension system being limited by the arc height of the leaf spring, there will be a situation where a single tire leaves the ground during the operation of the chassis. This will cause the instantaneous force on other tires to increase, creating a safety hazard of tire blowout. Limited by the fact that the ordinary leaf spring suspension steering system has limited adjustment ability for harsh working conditions, in extreme working conditions on the construction site, due to the poor road conditions, structural components such as the frame and tires will be damaged by long-term torsional fatigue. Even when the dump truck is lifting and unloading, the uneven road surface will cause uneven force on the whole vehicle, the carriage will be skewed, and it is impossible to control the attitude of the axle, and then it is impossible to ensure that the axle fits the road surface state displacement, resulting in a risk of frame rollover. For this reason, we propose a multi-axle linkage oil-gas balance steering suspension system. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-axle linkage oil-gas balance steering suspension system, aiming to replace the leaf spring suspension with an oil-gas suspension, increase the up and down stroke of the tires, avoid the suspension state of a single tire, prevent the instantaneous force on other tires from increasing beyond the bearing limit, eliminate the safety hazard of tire blowout. At the same time, the attitude of the axle is controlled by using a figure-eight thrust rod structure, and the axle can move up and down normally on the undulating road surface, which not only controls the attitude of the axle, avoids long-term torsional fatigue damage to structural components such as the frame and tires, prevents uneven force on the whole vehicle caused by uneven road surface during the lifting and unloading of the dump truck, resulting in the skewing of the carriage, enables the axle to ensure normal displacement in a state of fitting the road surface under extreme road conditions, and reduces the risk of frame rollover.

[0006] To achieve the above object, the present invention provides the following technical solutions: A multi-axle linkage oil-gas balance steering suspension system, including a frame; Axles, multiple axles are provided, and the multiple axles are horizontally arranged under the frame; Wheel hubs, multiple wheel hubs are provided, the multiple wheel hubs are symmetrically distributed under the frame, and tires are fixed to the side ends of the multiple wheel hubs by bolts; and The suspension mechanism is arranged between the vehicle frame and the plurality of vehicle axles, and the suspension mechanism is connected to the plurality of wheel hubs to move the plurality of tires.

[0007] As a preferred solution of the present invention, the suspension mechanism includes an elastic component, a connecting rod component, a synchronization component and a limit component. The elastic component is provided in multiple groups, and the multiple groups of elastic components are arranged in parallel between the frame and multiple axles. The limit components are provided in multiple groups, and the multiple groups of limit components are all arranged between the frame and multiple axles, and the multiple groups of limit components are located on one side of the multiple groups of elastic components. The synchronization component is provided in multiple groups, and the multiple groups of synchronization components are arranged at the side ends of multiple axles, and the multiple groups of synchronization components are connected to multiple wheel hubs. The connecting rod assembly is arranged at the side end of the frame, and the connecting rod assembly is connected to the multiple groups of synchronization components.

[0008] As a preferred solution of the present invention, each group of the elastic components includes a side end fixing frame and a cylinder, two side end fixing frames are provided, and the two side end fixing frames are fixedly connected to the two side ends of the frame, and two cylinders are provided, and the two cylinders are installed and fixed between the inner walls of the two side end fixing frames, and the output ends of the two cylinders extend to the bottom of the frame, and the output ends of the two cylinders are rotatably connected to the axle through a hinge shaft.

[0009] As a preferred solution of the present invention, each group of the limiting components includes a bottom fixing frame, a diagonal tie rod, a latch frame and a reinforcing rod, four latch frames are provided, and the four latch frames are fixedly connected to the top of a single axle, and the four latch frames are staggered up and down, two bottom fixing frames are provided, and the two bottom fixing frames are fixedly connected to the bottom of the frame, and the reinforcing rod is rotatably connected between the two bottom fixing frames, four diagonal tie rods are provided, and the four diagonal tie rods are arranged between the two bottom fixing frames and the single axle, one end of the four diagonal tie rods is rotatably connected to the two bottom fixing frames by a latch, and the other end of the four diagonal tie rods is rotatably connected to the four latch frames by a latch, and the four diagonal tie rods are in two groups of up and down staggered forms.

[0010] As a preferred solution of the present invention, each group of the synchronization components includes a steering knuckle, a synchronous steering rod, an electromagnetic thrust rod, an adapter block and a synchronization rod, wherein two steering knuckles are provided, and the two steering knuckles are rotatably connected to the two ends of a single axle, two synchronous steering rods are provided, and the two synchronous steering rods are fixedly connected to the side ends of the two steering knuckles, two adapter blocks are provided, and the two adapter blocks are fixedly connected to one side end of the axle, the two electromagnetic thrust rods are rotatably connected to the two adapter blocks through hinge shafts, and the output ends of the two electromagnetic thrust rods are rotatably connected to the two synchronous steering rods, and the synchronization rod is rotatably connected between the two synchronous steering rods.

[0011] As a preferred embodiment of the present invention, the connecting rod assembly includes a steering tie rod, a rotating shaft rod, a rotating frame, a driven rod, a driving rod, a swinging block, a support frame and a servo motor. There are three rotating shaft rods, and the three rotating shaft rods are installed at the side end of the vehicle frame, and the three rotating shaft rods are located on one side of the side end fixing frame. There are three rotating frames, and the three rotating frames are rotatably connected to the circumferential surfaces of the three rotating shaft rods. There are two driven rods, and the two driven rods are of different lengths. The two driven rods are rotatably connected between the three rotating frames. The support frame is fixedly connected to the side end of the vehicle frame. The servo motor is fixedly connected to the side end of the support frame. The output end of the support frame extends to the other side of the support frame. The swinging block is fixedly connected to the output end of the servo motor, and the swinging block is located on the other side of the support frame. The driving rod is rotatably connected to the side end of the swinging block, and the other end of the driving rod is rotatably connected to a rotating frame. There are three steering tie rods, and the three steering tie rods are rotatably connected to the tops of the three steering knuckles. Two of the three steering tie rods are rotatably connected to two rotating frames, and one of the three steering tie rods is rotatably connected to the swinging block.

[0012] As a preferred embodiment of the present invention, two synchronous valves are fixedly connected between the inner walls of the vehicle frame, and the three oil cylinders on one side of the vehicle frame are all connected to the synchronous valves through oil pipes.

[0013] As a preferred embodiment of the present invention, arc-shaped scraping plates are bent at the side ends of multiple synchronous steering rods, and the multiple arc-shaped scraping plates are located inside the multiple tires.

[0014] As a preferred embodiment of the present invention, pressure detectors are built in multiple electromagnetic thrust rods.

[0015] As a preferred embodiment of the present invention, two car body frames are fixedly connected to the top of the vehicle frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this solution, during the driving process of the vehicle, the output ends of multiple oil cylinders push multiple axles downward, so that multiple tires can all contact the road surface. The air-oil suspension is used to replace the leaf spring suspension, increasing the up and down stroke of multiple tires, avoiding the suspension state of a single tire, preventing the instantaneous force on other tires from increasing beyond the load limit, eliminating the safety hazard of tire blowout. At the same time, by using multiple tires all in contact with the ground, the design redundancy in the design process of the vehicle frame can be reduced, and the actual load capacity of the vehicle can be increased.

[0017] 2. In this solution, the four diagonal tie rods are in two groups in a staggered up-and-down pattern, effectively restricting the left-right movement of the axle but not restricting the up-down movement of the axle, achieving cross-restriction on the axle, controlling the axle attitude, preventing long-term torsional fatigue damage to structural components such as the frame and tires, and preventing the carriage from tilting when the dump truck lifts and unloads goods due to uneven road surfaces, resulting in uneven stress on the whole vehicle. When the axle is under extreme road conditions, it ensures the normal displacement of the axle in contact with the road surface, reduces the risk of frame roll, and when the axle is under extreme road conditions, it ensures the displacement of the axle in contact with the road surface and reduces the risk of frame roll.

[0018] 3. In this solution, when three cylinders on one side are connected to a synchronous valve through oil pipes, multiple cylinders are connected in series with hydraulic oil on one side, enabling the tires to achieve adaptive balance, effectively reducing the bumps during the driving of the freight car body, and reducing the breakage rate of goods during transportation.

[0019] 4. In this solution, when multiple tires are deflected synchronously, after the multiple steering knuckles on one side are deflected, the multiple steering knuckles on one side drive the multiple wheels and tires to deflect. The multiple steering knuckles on one side drive the multiple steering knuckles on the other side to deflect through multiple synchronizing rods, enabling the two sides of the tires to rotate synchronously. At the same time, the output ends of multiple electromagnetic thrust rods drive two synchronous steering rods to deflect synchronously through telescoping, using multiple electromagnetic thrust rods to synchronously compensate for the deflection of multiple tires, avoiding asynchronous deflection of multiple tires, improving the synchronous turning ability of the frame, and preventing abnormal wear of a single tire among multiple tires, thus increasing the service life of the tires.

[0020] 5. In this solution, multiple electromagnetic thrust rods are internally provided with pressure detectors to collect the wheelbase between multiple tires in real time, facilitating real-time feedback of the deflection angle data of multiple tires, effectively collecting the deflection angles of multiple tires, providing accurate data for frame attitude adjustment, reducing the difficulty of frame attitude adjustment, and improving the driving comfort of the freight car. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is an installation schematic diagram of a multi-axis linkage oil-gas balanced steering suspension system of the present invention; Figure 2 is a three-dimensional view of a multi-axis linkage oil-gas balanced steering suspension system of the present invention; Figure 3 is a half-sectional view of a multi-axis linkage oil-gas balanced steering suspension system of the present invention; Figure 4This is a partial half-sectional view of the first perspective of a multi-axis linkage oil-gas balanced steering suspension system of the present invention; Figure 5 This is a partial half-sectional view of the second perspective of a multi-axis linkage oil-gas balanced steering suspension system of the present invention; Figure 6 This is a multi-axis linkage oil-gas balanced steering suspension system of the present invention Figure 5 The enlarged view of part A; Figure 7 This is the disassembling schematic diagram of the first perspective of a multi-axis linkage oil-gas balanced steering suspension system of the present invention; Figure 8 This is a multi-axis linkage oil-gas balanced steering suspension system of the present invention Figure 7 The enlarged view of part B; Figure 9 This is the disassembling schematic diagram of the second perspective of a multi-axis linkage oil-gas balanced steering suspension system of the present invention.

[0022] In the figure: 1, vehicle frame; 2, tire; 3, side end fixing frame; 4, oil cylinder; 5, axle; 6, steering knuckle; 7, wheel hub; 8, synchronous steering rod; 9, electromagnetic thrust rod; 10, adapter block; 11, synchronous rod; 12, steering tie rod; 13, rotating shaft rod; 14, rotating frame; 15, driven rod; 16, driving rod; 17, swing block; 18, support frame; 19, servo motor; 20, bottom fixing frame; 21, diagonal tie rod; 22, pin fixing frame; 23, strengthening rod; 24, hopper frame; 25, arc scraper; 26, synchronous valve. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1 Refer to Figure 1 - Figure 9 A multi-axis linkage oil-gas balanced steering suspension system includes: Vehicle frame 1; Axle 5, there are multiple axles 5, and the multiple axles 5 are horizontally arranged on the lower side of the vehicle frame 1; Wheel hub 7, there are multiple wheel hubs 7, the multiple wheel hubs 7 are symmetrically distributed on the lower side of the vehicle frame 1, and tires 2 are fixed to the side ends of the multiple wheel hubs 7 by bolts; and Suspension mechanism, the suspension mechanism is arranged between the vehicle frame 1 and multiple axles 5, the suspension mechanism is connected to multiple wheels 7, and is used to move multiple tires 2.

[0025] In the present invention, the vehicle frame 1 is used to support and fix multiple side fixing brackets 3, multiple rotating shaft rods 13, multiple bottom fixing brackets 20 and two vehicle body frames 24, multiple wheels 7 are used to fix multiple tires 2, multiple tires 2 are used to support the whole vehicle frame, the suspension mechanism is connected to multiple wheels 7, and is used to move multiple tires 2.

[0026] The suspension mechanism includes an elastic component, a link component, a synchronization component and a limit component. There are multiple groups of elastic components, and multiple groups of elastic components are arranged in parallel between the vehicle frame 1 and multiple axles 5. There are multiple groups of limit components, and multiple groups of limit components are all arranged between the vehicle frame 1 and multiple axles 5, and multiple groups of limit components are located on one side of multiple groups of elastic components. There are multiple groups of synchronization components, and multiple groups of synchronization components are arranged at the side ends of multiple axles 5. Multiple groups of synchronization components are connected to multiple wheels 7. The link component is arranged at the side end of the vehicle frame 1, and the link component is connected to multiple groups of synchronization components.

[0027] In the present invention, multiple groups of elastic components are used to press down multiple tires 2, multiple groups of limit components are used to limit the horizontal movement of multiple tires 2, the synchronization component is used to synchronously deflect multiple tires 2, and the link component is used to deflect multiple tires 2.

[0028] Each group of elastic components includes a side fixing bracket 3 and an oil cylinder 4. There are two side fixing brackets 3, and the two side fixing brackets 3 are fixedly connected to the two side ends of the vehicle frame 1. There are two oil cylinders 4, and the two oil cylinders 4 are installed and fixed between the inner walls of the two side fixing brackets 3. The output ends of the two oil cylinders 4 extend to the bottom of the vehicle frame 1, and the output ends of the two oil cylinders 4 are rotatably connected to the axle 5 through a hinge shaft.

[0029] In the present invention, in each group of elastic components, the two side fixing brackets 3 are used to accommodate and connect the two oil cylinders 4, and the two oil cylinders 4 are used to push down a single axle 5 to control the distance between the axle 5 and the vehicle frame 1. During the driving of the vehicle, the output ends of multiple oil cylinders 4 push down multiple axles 5, so that multiple tires 2 can all contact the road surface. The air-oil suspension is used to replace the leaf spring suspension, increasing the up and down stroke of multiple tires 2, avoiding the suspension state of a single tire 2, preventing the instantaneous force on other tires 2 from increasing beyond the load limit, eliminating the safety hazard of tire blowout. At the same time, by using multiple tires 2 all in contact with the ground, the design redundancy in the vehicle frame design process can be reduced, and the actual load capacity of the vehicle can be increased.

[0030] Each set of limiting components includes a bottom fixing frame 20, a diagonal tie rod 21, a latch frame 22 and a reinforcing rod 23. Four latch frames 22 are provided, and the four latch frames 22 are fixedly connected to the top of a single axle 5. The four latch frames 22 are staggered up and down. Two bottom fixing frames 20 are provided, and the two bottom fixing frames 20 are fixedly connected to the bottom of the frame 1. The reinforcing rod 23 is rotatably connected between the two bottom fixing frames 20. Four diagonal tie rods 21 are provided, and the four diagonal tie rods 21 are arranged between the two bottom fixing frames 20 and the single axle 5. One end of the four diagonal tie rods 21 is rotatably connected to the two bottom fixing frames 20 by a latch, and the other end of the four diagonal tie rods 21 is rotatably connected to the four latch frames 22 by a latch, and the four diagonal tie rods 21 are in two groups of up and down staggered forms.

[0031] In the present invention, four latch frames 22 are used to support and connect multiple diagonal rods 21, two bottom fixing frames 20 are used to fix the reinforcing rods 23 and multiple diagonal rods 21, the reinforcing rods 23 are used for fixed connection between the two bottom fixing frames 20, and the frame 1, the reinforcing rods 23 and the two bottom fixing frames 20 are in a trapezoidal state, and the four diagonal rods 21 are in two groups of up and down staggered forms, which effectively limit the left and right movement of the axle 5, but do not limit the up and down movement of the axle 5, so as to achieve cross restriction of the axle 5 and control the posture of the axle 5. It not only controls the posture of the axle, but also avoids long-term distortion and fatigue damage of structural parts such as the frame 1 and the tire 2, and prevents uneven force on the whole vehicle due to uneven road surface when the dump truck is lifted and unloaded, resulting in skewed carriage, so that the axle 5 is under extreme road surface, ensuring that the axle 5 moves in accordance with the road surface state and reduces the risk of frame rollover.

[0032] Each set of synchronization components includes a steering knuckle 6, a synchronization steering rod 8, an electromagnetic thrust rod 9, an adapter block 10 and a synchronization rod 11. There are two steering knuckles 6, which are rotatably connected to the two ends of a single axle 5. There are two synchronization steering rods 8, which are fixedly connected to the side ends of the two steering knuckles 6. There are two adapter blocks 10, which are fixedly connected to one side end of the axle 5. The two electromagnetic thrust rods 9 are rotatably connected to the two adapter blocks 10 through hinge shafts, and the output ends of the two electromagnetic thrust rods 9 are rotatably connected to the two synchronization steering rods 8. The synchronization rod 11 is rotatably connected between the two synchronization steering rods 8.

[0033] In the present invention, among multiple groups of synchronous components, multiple knuckles 6 are used to support and fix multiple wheels 7, multiple synchronous steering rods 8 are used to drive the multiple knuckles 6 to deflect, and then drive the multiple wheels 7 and tires 2 to deflect. Multiple adapter blocks 10 are used to support and fix multiple electromagnetic thrust rods 9. The output ends of the multiple electromagnetic thrust rods 9 push the multiple synchronous steering rods 8 to deflect. The multiple adapter blocks 10 are used for the synchronous deflection between the multiple synchronous steering rods 8. When synchronously deflecting the multiple tires 2, after the multiple knuckles 6 on one side deflect, the multiple knuckles 6 on one side drive the multiple wheels 7 and tires 2 to deflect. The multiple knuckles 6 on one side drive the multiple knuckles 6 on the other side to deflect through multiple synchronizing rods 11, so that the two tires 2 on both sides can rotate synchronously. At the same time, the output ends of the multiple electromagnetic thrust rods 9 drive two synchronous steering rods 8 to deflect synchronously through expansion and contraction, and the multiple electromagnetic thrust rods 9 are used to synchronously compensate for the deflection of the multiple tires 2, avoiding the asynchronous deflection of the multiple tires 2, improving the synchronous turning ability of the vehicle frame, and at the same time preventing abnormal wear of a single tire among the multiple tires 2 and improving the service life of the tires.

[0034] The link assembly includes a steering tie rod 12, a rotating shaft rod 13, a rotating frame 14, a driven rod 15, a driving rod 16, a swinging block 17, a support frame 18 and a servo motor 19. There are three rotating shaft rods 13, and the three rotating shaft rods 13 are installed at the side end of the vehicle frame 1 and are located on one side of the side end fixing frame 3. There are three rotating frames 14, and the three rotating frames 14 are rotatably connected to the circumferential surfaces of the three rotating shaft rods 13. There are two driven rods 15, and the two driven rods 15 are of different lengths. The two driven rods 15 are rotatably connected between the three rotating frames 14. The support frame 18 is fixedly connected to the side end of the vehicle frame 1, and the servo motor 19 is fixedly connected to the side end of the support frame 18. The output end of the support frame 18 extends to the other side of the support frame 18. The swinging block 17 is fixedly connected to the output end of the servo motor 19, and the swinging block 17 is located on the other side of the support frame 18. The driving rod 16 is rotatably connected to the side end of the swinging block 17, and the other end of the driving rod 16 is rotatably connected to one rotating frame 14. There are three steering tie rods 12, and the three steering tie rods 12 are rotatably connected to the tops of the three knuckles 6. Two of the three steering tie rods 12 are rotatably connected to the two rotating frames 14, and one of the three steering tie rods 12 is rotatably connected to the swinging block 17.

[0035] In the present invention, three rotating shaft rods 13 are used to support the rotation of three rotating frames 14. The three rotating frames 14 are used to transmit the pulling force of the driving rod 16, and then pull two steering tie rods 12 to move. Two driven rods 15 are used for the synchronous deflection of the three rotating frames 14. The support frame 18 is used to support and fix the servo motor 19. The servo motor 19 is used to drive the swing block 17 to deflect. The driving rod 16 is used to pull one rotating frame 14 to deflect. The three steering tie rods 12 are used to pull three steering knuckles 6 on one side to deflect. During the steering process of multiple tires 2, the output end of the servo motor 19 drives the swing block 17 to deflect. The swing block 17 pulls the driving rod 16 and a single steering tie rod 12 to move. At the same time, the driving rod 16 pulls one of the three rotating frames 14 to deflect. The three rotating frames 14 are connected by two driven rods 15 and deflect synchronously on the circumferential surface of the three rotating shaft rods 13. One of the three rotating frames 14 pulls the other two steering tie rods 12 to move, and then the three steering tie rods 12 simultaneously pull the three steering knuckles 6 to deflect, so that the three steering knuckles 6 drive the three hubs 7 and the tires 2 to deflect. At the same time, by using multiple sets of synchronous components, the multiple tires 2 on both sides can be quickly steered synchronously to meet the needs of the truck turning and driving.

[0036] Two synchronous valves 26 are fixedly connected between the inner walls of the vehicle frame 1. The three oil cylinders 4 on one side of the vehicle frame 1 are all connected to the synchronous valve 26 through oil pipes.

[0037] In the present invention, the two synchronous valves 26 are respectively connected to the six oil cylinders 4 on both sides through oil pipes. When the three oil cylinders 4 on one side are connected to a synchronous valve 26 through oil pipes, the multiple oil cylinders 4 adopt a series connection mode of unilateral hydraulic oil, so that the tires can be adaptively balanced, effectively reducing the bumping during the driving of the truck bed and reducing the damage rate of the goods during transportation.

[0038] Arc-shaped scraping plates 25 are bent at the side ends of multiple synchronous steering rods 8, and the multiple arc-shaped scraping plates 25 are located inside the multiple tires 2.

[0039] In the present invention, the multiple arc-shaped scraping plates 25 deflect synchronously with the multiple steering knuckles 6 and the tires 2. The multiple arc-shaped scraping plates 25 are provided to scrape a large amount of soil attached to the inner walls of the multiple tires 2, facilitating the cleaning of the soil and reducing the corrosion and oxidation of the multiple tires 2 by mud and water.

[0040] Pressure monitors are built into multiple electromagnetic thrust rods 9.

[0041] In the present invention, pressure detectors are built into multiple electromagnetic thrust rods 9 to collect the wheelbase between the multiple tires 2 in real time, facilitate the real-time feedback of the deflection angle data of the multiple tires 2, effectively collect the deflection angle of the multiple tires 2, provide accurate data for the adjustment of the vehicle frame posture, reduce the difficulty of adjusting the vehicle frame posture, and improve the driving comfort of the truck.

[0042] Two bucket frames 24 are fixedly connected to the top of the vehicle frame 1.

[0043] In the present invention, the two bucket frames 24 are used to support the bucket.

[0044] A method for using a multi-axis linkage oil-gas balanced steering suspension system includes the following steps: S1. Increase the load: During the driving of the vehicle, the output ends of multiple oil cylinders 4 push multiple axles 5 downward, so that multiple tires 2 can all contact the road surface. At the same time, the four diagonal tie rods 21 are in two groups in a vertically staggered form, effectively restricting the left and right movement of the axle 5, but not restricting the up and down movement of the axle 5. The leaf spring suspension is replaced by an oil-gas suspension, increasing the up and down stroke range of each tire 2 from the original floating stroke of 100 mm to the maximum floating stroke of 150 mm. The body attitude and the force condition will change. The vehicle can adapt to a road surface with a maximum undulation of 150 mm from the original maximum undulation of 50 mm, keeping the body attitude stable, enabling each tire to be normally stressed, avoiding the suspension state of a single tire 2, preventing the instantaneous force on other tires 2 from increasing beyond the load limit, eliminating the safety hazard of tire blowout. At the same time, by using the fact that multiple tires 2 all contact the ground, the design redundancy in the vehicle frame design process can be reduced, and the actual load capacity of the vehicle can be increased; S2. Attitude adjustment: During the driving of the vehicle, the output end of the servo motor 19 drives the swing block 17 to deflect. The swing block 17 pulls the active rod 16 and a single steering tie rod 12 to move. At the same time, the active rod 16 pulls one of the three rotating frames 14 to deflect. The three rotating frames 14 are connected by two driven rods 15 and deflect synchronously on the circumferential surfaces of the three rotating shaft rods 13. One of the three rotating frames 14 pulls the other two steering tie rods 12 to move, and then the three steering tie rods 12 simultaneously pull the three steering knuckles 6 to deflect, so that the three steering knuckles 6 drive the three hubs 7 and the tires 2 to deflect. At the same time, by using multiple groups of synchronous components, the multiple tires 2 on both sides can perform fast synchronous steering to meet the needs of the truck for turning; At the same time, when driving on an extreme road surface, the four diagonal tie rods 21 are in two groups in a vertically staggered form, effectively restricting the left and right movement of the axle 5, but not restricting the up and down movement of the axle 5, realizing cross-restriction on the axle 5, achieving control of the attitude of the axle 5, enabling the axle 5 to be in an extreme road surface and ensuring the displacement of the axle 5 in a state of fitting the road surface, reducing the risk of vehicle frame roll; S3. Adaptive balance: When three oil cylinders 4 on one side are connected to a synchronous valve 26 through oil pipes, multiple oil cylinders 4 are connected in series with unilateral hydraulic oil, enabling the tires to achieve adaptive balance, effectively reducing the jolting of the truck bed during driving, and reducing the breakage rate of cargo transportation. At the same time, multiple oil cylinders 4 on one side are connected in series, and the internal pressure of multiple oil cylinders 4 is adaptively balanced. On different undulating road surfaces, under the condition of adaptive balance of oil and gas pressure, each oil cylinder automatically balances to achieve a stable state of the vehicle body.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-axis linkage oil-gas balanced steering suspension system, characterized in that: include; Frame (1); Axles (5), wherein a plurality of axles (5) are provided, and the plurality of axles (5) are horizontally arranged and located on the lower side of the frame (1); A wheel hub (7), wherein a plurality of the wheel hubs (7) are provided, the plurality of the wheel hubs (7) are symmetrically distributed on the lower side of the frame (1), and the side ends of the plurality of the wheel hubs (7) are all fixed with tires (2) by bolts; and A suspension mechanism is provided between a vehicle frame (1) and a plurality of vehicle axles (5), and the suspension mechanism is connected to a plurality of wheel hubs (7) to move a plurality of tires (2).

2. The multi-axis linkage oil-gas balanced steering suspension system according to claim 1, characterized in that: The suspension mechanism comprises an elastic component, a connecting rod component, a synchronous component and a limit component. The elastic component is provided in multiple groups, and the multiple groups of elastic components are arranged in parallel between the frame (1) and the multiple axles (5). The limit component is provided in multiple groups, and the multiple groups of limit components are all arranged between the frame (1) and the multiple axles (5), and the multiple groups of limit components are located on one side of the multiple groups of elastic components. The synchronous component is provided in multiple groups, and the multiple groups of synchronous components are arranged at the side ends of the multiple axles (5). The multiple groups of synchronous components are connected to the multiple wheel hubs (7). The connecting rod component is provided at the side end of the frame (1), and the connecting rod component is connected to the multiple groups of synchronous components.

3. The multi-axis linkage oil-gas balanced steering suspension system according to claim 2, characterized in that: Each group of the elastic components comprises a side end fixing frame (3) and an oil cylinder (4), wherein two side end fixing frames (3) are provided, and the two side end fixing frames (3) are fixedly connected to the two side ends of the frame (1); wherein two oil cylinders (4) are provided, and the two oil cylinders (4) are installed and fixed between the inner walls of the two side end fixing frames (3), and the output ends of the two oil cylinders (4) extend to the bottom of the frame (1), and the output ends of the two oil cylinders (4) are rotationally connected to the axle (5) via a hinge shaft.

4. The multi-axis linkage oil-gas balanced steering suspension system according to claim 3, characterized in that: Each group of the position limiting components comprises a bottom fixing frame (20), a diagonal tie rod (21), a latch frame (22) and a reinforcing rod (23). Four latch frames (22) are provided. The four latch frames (22) are fixedly connected to the top of a single axle (5). The four latch frames (22) are staggered up and down. Two bottom fixing frames (20) are provided. The two bottom fixing frames (20) are fixedly connected to the bottom of the frame (1). The reinforcing rod (23) is rotatably connected between the two bottom fixing frames (20). Four diagonal tie rods (21) are provided. The four diagonal tie rods (21) are arranged between the two bottom fixing frames (20) and the single axle (5). One end of the four diagonal tie rods (21) is rotatably connected to the two bottom fixing frames (20) by means of a latch. The other end of the four diagonal tie rods (21) is rotatably connected to the four latch frames (22) by means of a latch. The four diagonal tie rods (21) are in two groups of vertically staggered forms.

5. The multi-axis linkage oil-gas balanced steering suspension system according to claim 4, characterized in that: Each group of the synchronization components comprises a steering knuckle (6), a synchronization steering rod (8), an electromagnetic thrust rod (9), an adapter block (10) and a synchronization rod (11); two steering knuckles (6) are provided, and the two steering knuckles (6) are rotationally connected to the two ends of a single axle (5); two synchronization steering rods (8) are provided, and the two synchronization steering rods (8) are fixedly connected to the side ends of the two steering knuckles (6); two adapter blocks (10) are provided, and the two adapter blocks (10) are fixedly connected to one side end of the axle (5); the two electromagnetic thrust rods (9) are rotationally connected to the two adapter blocks (10) via hinge shafts, and the output ends of the two electromagnetic thrust rods (9) are rotationally connected to the two synchronization steering rods (8); and the synchronization rod (11) is rotationally connected between the two synchronization steering rods (8).

6. The multi-axis linkage oil-gas balanced steering suspension system according to claim 5, characterized in that: The connecting rod assembly comprises a steering rod (12), a rotating shaft rod (13), a rotating frame (14), a driven rod (15), an active rod (16), a swing block (17), a support frame (18) and a servo motor (19). The rotating shaft rods (13) are provided in three numbers, the three rotating shaft rods (13) are installed on the side end of the frame (1), and the three rotating shaft rods (13) are located on one side of the side end fixed frame (3). The rotating frames (14) are provided in three numbers, the three rotating frames (14) are rotatably connected to the circumferential surfaces of the three rotating shaft rods (13). The driven rods (15) are provided in two numbers, the two driven rods (15) are of different lengths, and the two driven rods (15) are rotatably connected between the three rotating frames (14). The support frame (18) is fixedly connected to the side end of the frame (1). The servo motor (19) is provided in The motor (19) is fixedly connected to the side end of the support frame (18), the output end of the support frame (18) extends to the other side of the support frame (18), the swing block (17) is fixedly connected to the output end of the servo motor (19), and the swing block (17) is located on the other side of the support frame (18), the active rod (16) is rotationally connected to the side end of the swing block (17), and the other end of the active rod (16) is rotationally connected to a rotating frame (14), three steering rods (12) are provided, the three steering rods (12) are rotationally connected to the tops of three steering knuckles (6), two of the three steering rods (12) are rotationally connected to two rotating frames (14), and one of the three steering rods (12) is rotationally connected to the swing block (17).

7. The multi-axis linkage oil-gas balanced steering suspension system according to claim 6, characterized in that: Two synchronization valves (26) are fixedly connected between the inner walls of the vehicle frame (1), and the three oil cylinders (4) on one side of the vehicle frame (1) are all connected to the synchronization valves (26) via oil pipes.

8. The multi-axis linkage oil-gas balanced steering suspension system according to claim 7, characterized in that: The side ends of the plurality of synchronous steering rods (8) are all bent with arc-shaped scrapers (25), and the plurality of arc-shaped scrapers (25) are located on the inner sides of the plurality of tires (2).

9. The multi-axis linkage oil-gas balanced steering suspension system according to claim 8, characterized in that: The plurality of electromagnetic thrust rods (9) are equipped with built-in pressure detectors.

10. The multi-axis linkage oil-gas balanced steering suspension system according to claim 8, characterized in that: Two bucket frames (24) are fixedly connected to the top of the vehicle frame (1).

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