TITLE

设施蔬菜收获切割影响因素优化试验

AUTHOR(S)
高国华; 王天宝; 周增产; 卜云龙
PUB. DATE
October 2015
SOURCE
Transactions of the Chinese Society of Agricultural Engineering;Oct2015, Vol. 31 Issue 19, p15
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the developed countries of the West, the greenhouse vegetable industry has become highly mechanized, with a relatively stable mechanization production system and necessary supporting tools. In order to improve the efficiency of harvesting greenhouse vegetables, Beijing University of Technology has designed an innovative vegetable harvester. The cutting tool that is used to remove vegetables from their stems is a critical factor in greenhouse vegetable harvesting and must be optimized to ensure that greenhouse vegetables are harvested effectively. The designed machine can have a better harvest effect and reduce the wear of cutting tool in the process of the work. At present, the mechanical properties of stem-cutting factors affecting crops have been extensively studied with sugar cane, corn stalk, eulaliopsis binata stem and cabbage in China and abroad. This paper detailed the design and study of the SHQG-I greenhouse vegetable harvest cutting experiment platform, which used a response surface method (RSM) to optimize the harvest process through a comprehensive cutting tool that removed vegetables from their stems. The study object of this paper was butter lettuce; the experiment was carried out on the SHQG-I greenhouse vegetable harvest cutting experiment platform, and the working process of greenhouse vegetable harvester was analyzed. According to the butter lettuce growth and the working process conditions, 6 parameters of the harvest cutting process were analyzed: cutting position, way of cutting, cutting speed, cutting angle, clamping distance and clamping angle. Determining the ways in which these parameters affected cutting force was the target of the experiment. The working range of these factors, which could be adjusted on the SHQG-I greenhouse vegetable harvest cutting experiment platform, influenced the cutting force. For the RSM employed in the experiment, generally no more than 4 parameters would be adjusted at a time. Therefore, the experiment first used the factor-screening test to determine the cutting position and cutting way. The cutting position was at 7 mm and the smooth cutting angle was 10°. The results of the experiment were analyzed with the Design-expert software. In addition, the regression equation of the cutting force and the various factors were determined, and lack of fit of the regression equation was found to be insignificant. Next, variance analysis was used to determine the significant factors, which were cutting speed, clamp distance, interaction between cutting speed and cutting angle, and interaction between cutting speed and clamp distance. Then, the curve diagram of significant factors and the response surface figure were drawn. Ultimately, the optimal working parameters were determined: cutting speed was 675 mm/s, cutting angle was 4.85°, clamping distance was 98.5 mm and clamping angle was 64.5°. According to the optimization parameters, the expected cutting force was 17.9 N, and the actual cutting force was 17.4 N (2.8% less than the expected force), which met the demand of the test. The experiment guaranteed a harvest success rate of 100% in all of the cases, as well as effectively reduced the necessary cutting force in the harvest process. After optimization, the harvester machine was in good condition, it produced a good harvest, and the cutting fracture was smooth, which satisfied the engineering requirement. The optimization parameters obtained in the experiment can be applied for the improvement of the actual equipment in the greenhouse vegetable industry field.
ACCESSION #
111151687

 

Related Articles

  • Russian greenhouse farming on the verge of big changes. Gerden, Eugene // FloraCulture International;Mar2014, Vol. 24 Issue 3, p8 

    The article offers information on greenhouse growing in Russia. It states that many greenhouses shut the business due to high production costs and less profit. According to the Ministry of Agriculture of the country only 25 percent of consumption by people consists of greenhouse vegetables. It...

  • Cuesta Roble releases 2013 international vegetable production data.  // Greenhouse Management;Apr2013 Produce Grower Supplement, p5 

    This article presents information on the release of the 2013 edition of the "International Greenhouse Vegetable Production Statistics," by Cuesta Roble Consulting, which gives a report on the current worldwide data and research on the commercial production of greenhouse vegetables for 125 countries.

  • Green Envy. Hall, Gail // Avenue: Edmonton;Nov2013, p64 

    The article reports on the contribution of Alberta to the availability of locally grown vegetables in Canada as of 2013. According to greenhouse specialist Dr. Mohyuddin Mirza, the province is one of the largest producers of greenhouse vegetables in the country. It notes that greenhouse growers...

  • Development Education. Fien, John // Social Alternatives;Jul84, Vol. 4 Issue 2, p18 

    The article focuses on the concept of development education that is concerned with the lives and future well-being of people of the Third World countries of the South or under Third World conditions in the industralized North. It is reported that development education has a role in the domain of...

  • Logistic Equation and its Application as Forecasting Model of Vegetables Production in Greenhouses in Albania. SHEHU, VALENTINA // Albanian Journal of Agricultural Sciences;2015, Vol. 14 Issue 3, p228 

    Correct forecasting is of a great importance for the business and economy of the country. To comprehend the market and the economic system, mathematical models are used to describe and predict the future of situation. Agriculture is the spinal column of Albania's economic activity and the last...

  • Imagining a Borderless World: A Comparative Study of Rabindranath Tagore and Swami Vivekananda. Sarkar, Sandip // Language in India;Mar2011, Vol. 11 Issue 3, p244 

    In the wake of globalised market economy we often talk of global village without taking into account the praxis of 'shadow lines' indicating the political sovereignty of a particular country. The birth of a nation is a historical phenomenon. Some scholars may consider it as a 'commodity'...

  • Greenhouse Gas Reductions.  // Alternatives Journal (A\J) - Canada's Environmental Voice;Summer2003, Vol. 29 Issue 3, p5 

    Reports that several developing countries have reduced their combined greenhouse gas emissions.

  • THE RAINMAKER. Pearce, Fred // New Scientist;01/26/2002, Vol. 173 Issue 2327, p40 

    Discusses the solar seawater still technology developed by Great Britain-based Light Works as of January 26, 2002. Use of the technology to develop greenhouses for growing vegetables in arid regions; Advantages of using greenhouses based on the system.

  • Greenhouse Veggies Win The Race. Snyder, Rick // American Vegetable Grower;Dec2007, Vol. 55 Issue 12, p64 

    The author discusses the greenhouse vegetable industry whose production is predicted to surpass vegetables grown in the field. Based on supermarket sales in the U.S., the market share of greenhouse tomatoes, for instance, was 43% in 2006. In many European countries, a large majority of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics