Special electrohydraulic directional control valve

Authors

Abstract

Abstract. The analysis of the application of modern aggregates with electrical control in various machines, both of the agro-industrial complex, and in other branches of the national economy is performed. A scheme is pro-posed and the design of a special monoblock hydraulic directional control valve GR20-24E with electrohydraulic control is developed. In the second stage, the cartridge 

version of the power cascade of the hydraulic directional control valve was used, which made it possible to simpli-fy the design, improve maintainability and reduce the overall dimensions and mass of the hydraulic part. The first cascade of control of the hydraulic directional control valve the spool is made in the form of two choke-like "ball-saddle" slots, in which the position of the balls is controlled by electromagnets. This execution of the con-trol system is characterized by simplicity, impossibility of jamming, lack of friction and the possibility of obtaining small strokes, which provides a higher reliability and power reduction for controlling the electromagnets.
As a result of the research and development work created electro-hydraulic directional control valve in a monoblock design. The use of the cartridge type switch-gear and the application in the pilot section of the throttle gap distributor with the ball locking element allowed to simplify the design of the hydraulic hydraulic directional control valve, increase its reliability and reduce the di-mensions and mass.
Key words: hydraulic directional control valve, car-tridge version, electromagnet, pilot part, reliability.

References

Claas. Jaguar 980-930 [Electronic resource]. URL: http://www.claas.co.uk/products/forage-harvesters/ jaguar980-930-2018. Title of the screen.

Case IH Agriculture. Austoft Cane Harvesters [Electronic resource]. URL: https://www.caseih.com/anz/ en-au/products/harvesting/austoft-cane-harvesters Title of the screen.

Электроника существенно расширяет возмож-ности дросселя [Электронный ресурс]. ?нтернет-версия журнала «Конструктор. Машиностроитель». – 2017. №1. Режим доступа: https://konstruktor.net/ podrobnee-hidr/intellektualnyj-drossel-na-420-bar-1566.html. Дата последнего доступа 15.07.2018.

Hawe Hydraulik - Solutions for a World under Pressure. Hydraulic valves [Electronic resource]. URL: https://www.hawe.com/products/product-search-by-category/hydraulic-valves/ Title of the screen.

Bosch Rexroth. Proportional, high-response and servo valves [Electronic resource]. URL: https://www.boschrexroth.com/ics/cat/?language= en&id=&cat=Industrial- Hydraulics- Catalog&m=DE&u=si&o=Desktop&p=g 253780,g257618e2da621c1f18& InitialNodeFirstLevel=true - Title of the screen.

Rexroth Bosch-Group. Mobile Hydraulics. Directional Control Valves SB 23 LS. [Electronic resource]. URL: https://www.yumpu.com/en/ document/ view/8788049/wegeventile-sb-23-ls-directional-control-valves-bosch-rexroth Title of the screen.

Claas. Jaguar 980-930 [Electronic resource]. URL: http://www.claas.co.uk/products/forage-harvesters/ jaguar 980-930-2018. Title of the screen.

Case IH Agriculture. Austoft Cane Harvesters [Electronic resource]. URL: https://www.caseih.com/anz/ en-au/products/harvesting/austoft-cane-harvesters Title of the screen.

Electronics greatly enhances throttle [Electronic resource]. Internet version of the magazine "Constructor. Mashinostroitel". 2017. No. 1. Mode of access: https://konstruktor.net/ podrobnee-hidr/intellektualnyj-drossel-na-420-bar-1566.html. Last access date 15.07.2018.

Hawe Hydraulik - Solutions for a World under Pressure. Hydraulic valves [Electronic resource] / URL: https://www.hawe.com/products/product-search-by-category/hydraulic-valves/ Title of the screen.

Bosch Rexroth. Proportional, high-response and servo valves [Electronic resource] / URL: https://www.boschrexroth.com/ics/cat/?language= en&id=&cat=Industrial- Hydraulics- Catalog&m=DE&u=si&o=Desktop&p=g 253780,g257618e2da621c1f18& InitialNodeFirstLevel=true - Title of the screen.

Rexroth Bosch-Group. Mobile Hydraulics. Directional Control Valves SB 23 LS. [Electronic resource] / URL: https://www.yumpu.com/en/ document/ view/8788049/wegeventile-sb-23-ls-directional-control-valves-bosch-rexroth Title of the screen.

Downloads

Published

2019-01-24

Issue

Vol. 9 No. 3 (2018)

Section

Статті

License

Relationship between right holders and users shall be governed by the terms of the license Creative Commons  Attribution – non-commercial – Distribution On Same Conditions 4.0 international (CC BY-NC-SA 4.0):https://creativecommons.org/licenses/by-nc-sa/4.0/deed.uk

Authors who publish with this journal agree to the following terms:

  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).