Combined type suspension system for tracked vehicle

[0022] The present invention will be further described below with reference to the content of the present invention and the examples described in the accompanying drawings.

[0023] like figure 1 As shown, a composite tracked vehicle suspension system, the vehicle includes a vehicle body 1, twelve road wheels 2 and twelve balance elbows 3, one end of the balance elbow 3 is hinged with the vehicle body 1, and the other end is hinged with the vehicle body 1. The load-bearing wheel 2 is hinged; it is characterized in that: the structure on both sides of the vehicle body 1 is symmetrical, and the first single air chamber oil and gas spring 4 and the first double air chamber oil and gas are sequentially installed between the balance elbows 3 on both sides and the vehicle body 1 from front to back. Spring 5, the second single-chamber oil-gas spring 6, the second double-chamber oil-gas spring 7, the third double-chamber oil-gas spring 8 and the third single-chamber oil-gas spring 9; the first single-chamber oil-gas spring 4, One end of the first double air chamber oil and gas spring 5, the third double air chamber oil and gas spring 8 and the third single air chamber oil and gas spring 9 are hinged with the vehicle body 1, and the other end is hinged with the respective balance elbow 3; One end of the gas chamber gas spring 6 and the second double gas chamber gas spring 7 are fixedly connected to the vehicle body 1 , and the other ends are connected to the respective balance elbows 3 through a link mechanism.

[0024] like Figure 4 and Figure 5 As shown, the connecting rod mechanism includes a connecting rod 21 and a crank 22 hinged with the connecting rod 21 , and the other end of the crank 22 is fixedly connected with the balance elbow 3 . The other end of the crank 22 is fixedly connected to the hinged end of the balance elbow 3 and the vehicle body 1, so that the first single air chamber oil and gas spring 4, the first double air chamber oil and gas spring 5, the third double air chamber oil and gas spring 8 and the first The three single-chamber gas springs 9 may be installed outside the vehicle body 1 , and the second single-chamber gas spring 6 and the second double-chamber gas spring 7 may be installed inside the vehicle body 1 .

[0025] like figure 2 and Figure 4 As shown, the first single-chamber oil-gas spring 4, the second single-chamber oil-gas spring 6 and the third single-chamber oil-gas spring 9 have the same structure, and all include a first hydraulic cylinder 10, a first piston cylinder 11, a first The movable piston 12 and the first damping valve 13; the first hydraulic cylinder 10 is sleeved on the first piston cylinder 11, the first piston cylinder 10 is provided with a first movable piston 12, and the first hydraulic cylinder A first damping valve 13 is installed at the bottom of 10 , oil is filled between the first movable piston 12 and the first piston cylinder 11 , and nitrogen gas is filled between the first movable piston 12 and the first hydraulic cylinder 10 .

[0026] like image 3 and Figure 5 As shown, the first double-chamber oil-gas spring 5, the second double-chamber oil-gas spring 6 and the third double-chamber oil-gas spring 7 have the same structure, and all include a second hydraulic cylinder 14, a second piston cylinder 15, a second The movable piston 16, the third movable piston 17 and the second damping valve 18; the second hydraulic cylinder 14 is sleeved on the second piston cylinder 15, and the second piston cylinder 15 is provided with the second movable piston 16 and The third movable piston 17, the bottom of the second hydraulic cylinder 14 is provided with a second damping valve 18, a first nitrogen chamber 19 is formed between the second movable piston 16 and the second hydraulic cylinder 14, the second Oil is filled between the movable piston 16 and the third movable piston 17 ; a second nitrogen chamber 20 is formed between the third movable piston 17 and the second piston cylinder 15 . The pressures in the first nitrogen chamber 19 and the second nitrogen chamber 20 are different, and the ratio of the pressures in the second nitrogen chamber 20 and the first nitrogen chamber 19 is a design parameter-specific pressure coefficient, which needs to be based on the quality of the vehicle and ride comfort. requirements, etc. to be determined.

[0027] The balance elbow 3 has the same length and initial installation angle, the size of each load-bearing wheel 2 is equal, and the distance between two adjacent load-bearing wheels 2 is the same, although simulation proves that the same distance can obtain better driving smoothness results, such as Image 6 However, in practical applications, the distance between the load-bearing wheels can also be adjusted as required, but at this time, the respective design data of the oil and gas springs need to be adjusted in order to obtain the overall optimal ride comfort design scheme.

[0028] Through the three-dimensional modeling and simulation analysis of the present invention, it can be known that the maximum acceleration at the driver's position of the vehicle body can be reduced by more than 30% without considering the influence of the crawler on the ride comfort.

[0029] The above description of the embodiments is for the convenience of those skilled in the art to understand and apply the present invention. Those skilled in the art can obviously apply the method introduced in the present invention to their design practice, and make appropriate modifications to the solution, and this process does not require creative work. According to the disclosure of the present invention, improvements and modifications made to the present invention by those skilled in the art should fall within the protection scope of the present invention.