a sleigh

Abstract

The invention discloses a sled car, which has the advantages of lightness, reliable strength, stable transmission and the like. Including the frame system and rear suspension system, the frame system includes engine frame, left plate, right plate, connecting frame, track frame, snow shield frame, left plate, right plate, respectively fixed above the rear of the engine frame, left The plate and the right plate are respectively connected to the rear of the engine frame through the left upper ear and the right upper ear. The rear end of the left plate and the right plate; the rear suspension system includes a guide rail frame, on which a first shock absorbing structure and a second shock absorbing structure are installed, the second shock absorbing structure is connected to the lower part of the front end of the track frame, and the first shock absorbing structure The structure is connected to the lower part of the rear end of the track frame; the left plate, right plate, left upper ear, right upper ear, track frame, and guide rail frame are made of aluminum alloy plates, and the engine frame, connecting frame, and snow shield frame are welded steel frame structures.

Description

technical field [0001] The invention relates to the technical field of snow vehicles, in particular to a sled. Background technique [0002] As a new snow transportation and entertainment tool, the sleigh car currently has two main structures for the frame system of the domestic sleigh car: an all-aluminum alloy plate structure, which requires high installation process requirements to ensure the assembly size, and is not resistant to impact Disadvantages such as easy deformation; the steel frame structure of all welded pipes, and the steel frame system welded by welded pipes are not suitable for high-speed sleds due to shortcomings such as heavy weight and large vibration; currently there is no special rear suspension system for sleds in China. Most of the parts use tubular welded iron frame combination parts and central shock absorber to relieve external impact. The preload of the rear suspension can only be adjusted by adjusting the preload of the central shock absorber. T...

AI Technical Summary

Problems solved by technology

However, the shifting process requires hands or feet to manipulate the shift lever to shift gears. During this process, problems such as shifting sticking and laborious shifting may occur, and there are disadvantages such as unreliable structure and large space occupation.

[0005] At present, the sleigh vehicles with medium and large displacements mainly use two-stroke engines, which are very noisy. In order to reduce noise and reduce emissions, there is currently a set of box-type in-line mufflers that specifically belong to two-stroke engines; however, due to With the gradual improvement of emission requirements, more and more sled vehicles use four-stroke engines, and the exhaust temperature of four-stroke engines is higher. The noise reduction of sleigh vehicles with four-stroke engines usually uses box-type back-pressure mufflers, while box-type The back-pressure muffler has a large volume, and the sleigh muffler is arranged on the front side, so the installation space is limited. In addition, increasing the volume of the muffler will increase the weight of the vehicle, and the increase in weight will affect the performance of the vehicle; If the exhaust muffler matches the four-stroke engine, the noise reduction effect is not good because the intake air temperature is too high

[0006] At present, the crawler drive system of domestic sled vehicles is to drive the inner rubber teeth or drive the iron buckle, and these two transmission methods have the disadvantages of low driving efficiency and instability, and at the same time, the service life of the track and the driving wheel is relatively low

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