A variable flow area suction nozzle for road sweeping vehicles

Abstract

The invention discloses a variable flow area suction nozzle applied to a road sweeper. The variable flow area suction nozzle comprises a suction nozzle body and a conveying pipe arranged on the suction nozzle body, as well as a front air baffle plate arranged at the front end of the suction nozzle body and a rear air baffle plate at the back end of the suction nozzle body, wherein air inlet passages are formed between the bottom ends of the front air baffle plate and the rear air baffle plate and road surface when the sweeper works; a suction inner cavity communicated with the conveying pipe is formed among the suction body, the front air baffle plate and the rear air baffle plate; a tongue plate arranged on the suction nozzle body is arranged in the suction nozzle inner cavity; and the tongue plate can swing when the sweeper works so that the cross-sectional flow area of the suction inner cavity is increased or reduced. By optimizing the flow field, the suction nozzle disclosed by the invention can guarantee relatively good adaptability of the road sweeper to dense garbage and light garbage on the ground, so that the adaptability of the road sweeper to the road garbage is enhanced, and the sweeping quality and working efficiency of the road sweeper are improved.

Description

technical field [0001] The invention belongs to the field of road cleaning equipment, and in particular relates to a variable flow area suction nozzle for a road cleaning vehicle. Background technique [0002] With the rapid development of my country's current urbanization and the increase of labor costs, urban road cleaning and cleaning equipment, including road sweepers, is gradually being popularized. There are many kinds of road sweepers. Among them, suction sweepers and pure suction sweepers have become one of the main development directions of road sweepers because of their advantages such as fast operation speed, high efficiency, and thorough road cleaning. [0003] The working principle of the suction-sweeping road sweeper is that after the brush collects the road garbage within a certain range (usually directly below the road sweeper), when the suction nozzle passes over the garbage, it will suck up the garbage on the ground and send it into the garbage In the garb...

AI Technical Summary

Problems solved by technology

[0006] In fact, the height of the inner cavity of the suction nozzle of the existing road sweeper remains unchanged during the cleaning operation, which means that the suction nozzle with a strong ability to collect sand and small stones is difficult to handle light garbage such as leaves and plastic films on the ground. It is also difficult to achieve high-quality cleaning operations on roads with thicker dust and sand particles. Moreover, for suction nozzles with a fixed height in the inner cavity, the range of operating speed is also narrow, which is generally not suitable for highways. cleaning work

Therefore, it has brought a lot of trouble to the road sweeper operators, and also restricted the full performance of the road sweeper, thus restricting the scope of use of the road sweeper

[0007] Due to the uncertainty of the road garbage situation, if the corresponding road sweeper is developed according to the needs of various road garbage situations and operating speeds, for road sweeper development companies, the product models will be very complicated, and the product pedigree will also be cumbersome; For units using road sweepers, it is necessary to purchase a variety of road sweepers to meet the needs of cleaning and cleaning, which not only increases the cost of equipment purchase and maintenance, but also the utilization factor of various types of equipment is not high

Therefore, it is unrealistic to develop a variety of corresponding road sweepers for different characteristics of road garbage to meet the requirements of various urban road cleaning.

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