Lifting-arching combined foldable mechanism for bottom plates of recreational vehicle

Abstract

A lifting-arching combined foldable mechanism for bottom plates of a recreational vehicle comprises a chassis. Slide ways are mounted on the chassis, slide chutes are arranged in each slide way, a slide rail is mounted in each slide chute, lifting pulleys are mounted on each slide rail, the slide rails are connected with a beam, a middle bottom plate and bottom plates on two sides are mounted on each slide way, each of the bottom plates on two sides comprises a hinge connection plate, a pin shaft connection plate and a hollow layer, a triangular lifting frame below each hinge connection plate contacts with the corresponding lifting pulley on the corresponding slide rail, a support rod telescopic device is mounted below each pin shaft connection plate and comprises a telescopic sleeve and a telescopic rod, one end of each telescopic rod is rotatably connected with the corresponding slide rail through a rotating shaft A, one end of each telescopic sleeve is rotatably connected with the lower side of each pin shaft connection plate through a rotating shaft B, hydraulic cylinders are mounted on the outer walls of the slide ways, piston rods of the hydraulic cylinders are connected with the beam through hollow layer lifting devices, each hollow layer lifting device comprises a 90-degree lifting carriage, the lower portions of the 90-degree lifting carriages are connected with the piston rods of the hydraulic cylinders, a roller is mounted on the upper portion of each 90-degree lifting carriage and contacts with the lower side of the corresponding hollow layer, and connecting frames are mounted on the inner wall of the beam and are rotatably connected with the middles of the 90-degree lifting carriages through pins.

Description

technical field [0001] The invention relates to the bottom plate of a car house, in particular to a flip-arch combination folding mechanism for the bottom plate of a car house. Background technique [0002] Due to the needs of some people’s work, they need to work and stay in the field, such as the People’s Liberation Army’s rescue and disaster relief or to perform tasks in the wilderness. People have already set up tents in the wild for work and accommodation. Setting up tents is not only slow and troublesome, but also When the weather is bad, tents have poor effect of sheltering from wind and rain, and tents cannot effectively block the attacks of wild animals in places where wild animals appear. Thereby there is an urgent need for a device that is easy to build and pack up, has good strength after building up, and is convenient to move after being packed up. Therefore, people have invented a caravan, such as Chinese Patent No. CN200820071986. The structure includes the s...

AI Technical Summary

Problems solved by technology

[0002] Due to the needs of some people’s work, they need to work and stay in the field, such as the People’s Liberation Army’s rescue and disaster relief or to perform tasks in the wilderness. People have already set up tents in the wild for work and accommodation. Setting up tents is not only slow and troublesome, but also When the weather is bad, tents have poor wind and rain protection effect, and tents cannot effectively block the attacks of wild animals in places where there are wild animals.

Thereby there is an urgent need for a device that is easy to build and pack up, has good strength after building up, and is convenient to move after being packed up. Therefore, people have invented a caravan, such as Chinese Patent No. CN200820071986. The structure includes the sliding connection between the main body and the telescopic body through the movable guide rail and the fixed guide rail seat. The main car body is equipped with a transmission mechanism; the two sides of the fixed guide rail seat are respectively equipped with four rollers; the movable guide rail is connected to the telescopic case. Under the bottom plate of the body, it is interspersed in the corresponding fixed guide rail seat; the synchronous shaft is set on the longitudinal symmetrical centerline of the main body bottom plate, and the two ends of the synchronous shaft are equipped with gears, and the inner side of the gear is equipped with bearings; the main There are two racks on the bottom plate of the box meshing with the gears at both ends of the synchronous shaft. The disadvantage is that the transmission between the racks and the gears has poor reliability. There is only one bottom plate of the telescopic box on both sides. It overlaps under the bottom of the main box, so the bottom of the main box must be high to accommodate two telescopic box bottoms and one main box bottom, and the telescopic box bottom must be equal to or smaller than the main box bottom. The expanded telescopic box has less space

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