A trailer/semi-trailer oil-pneumatic suspension device
A technology of oil-pneumatic suspension and semi-trailer, which is applied in the field of suspension system, can solve the problems of large structure size, complex structure, low roll angle stiffness, etc., and achieve the effect of vibration reduction and life improvement
Active Publication Date: 2018-04-17
上海优软汽车科技有限公司
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Problems solved by technology
[0002] At present, the suspension system used for trailers and semi-trailer transport vehicles is the commonly used traditional suspension of leaf springs. Because the stiffness of elastic elements is mostly linear, the stiffness remains basically unchanged, even if variable thickness, main and auxiliary steel plates, etc. The performance improvement effect of the measures is not significant, and the air suspension has the disadvantages of small unit energy storage, large structure size, complex structure, many types of parts, and low roll angle stiffness.
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[0009] Such as figure 1 The shown (a trailer / semi-trailer) oil-air suspension device includes an upper bracket 1, an oil-air spring cylinder 2, a lower bracket 3, a leaf spring 5 (can be a single or auxiliary spring as shown in the figure), a leaf spring The middle section of the bracket 6, the leaf spring 5 is fixed on the axle 4 by the U-shaped bolt 8 and the pressure plate 9 (the pressure plate 9 has two, arranged up and down, the U-shaped bolt 8 passes through the pressure plate 9 from below, and is locked by a nut). The leaf spring One end of the lug of 5 is hinged on the leaf spring bracket 6, and the leaf spring bracket is fixed on the frame 7. The other end of the leaf spring 5 is connected with one end of the oil-air spring cylinder 2 through the lower bracket 3 through a ball hinge. The other end is connected to the upper bracket 1 through a ball hinge, and the upper bracket 1 is fixed to the frame 7.
[0010] Such as figure 1 As shown, the leaf spring bracket 6 and the...
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The invention provides an oil-gas suspension device for a trailer / semitrailer. The oil-gas suspension device for the trailer / semitrailer comprises a plate spring support and a plate spring, wherein a middle segment of the plate spring is fixed on a car shaft through a fixed device, a packing ear which is arranged on one end of the plate spring is hinged on the plate spring support, the plate spring support is fixed on a car frame, the other end of the plate spring is connected with one end of an oil-gas spring cylinder through a lower support and a spherical hinge, the other end of the oil-gas spring cylinder is connected onto an upper support through a spherical hinge, and the upper support is fixed on the car frame. The oil-gas suspension device for the trailer / semitrailer buffers through compressibility of the oil-gas spring cylinder, damps by controlling flow speed of oil liquid through a damping hole, replaces a steel plate spring or an air spring, and is applied on the trailer or the semitrailer, thereby achieving riding comfort and damping of cars, and prolonging life.
Description
Technical field [0001] The invention relates to a suspension system for a trailer and a semi-trailer transport vehicle, in particular to a trailer / semi-trailer hydro-pneumatic suspension device. Background technique [0002] At present, the suspension systems for trailers and semi-trailer vehicles are commonly used traditional leaf spring suspensions. Because the stiffness of the elastic elements is mostly linear, the stiffness remains basically unchanged, even if variable thickness, main and auxiliary steel plates are used. The performance improvement effect of the measures is not significant, and the air suspension has the disadvantages of small unit energy storage, large structure size, complex structure, many types of parts, and low roll angle stiffness. Summary of the invention [0003] In order to improve the smoothness of the trailer or semi-trailer transport vehicle, improve the damping effect, and reduce the dynamic load coefficient, the present invention proposes a hydro...
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IPC IPC(8): B60G15/06
Inventor 郭茂春
Owner 上海优软汽车科技有限公司