Overview of development trends of hydraulic excavator equipped by working equipment with variable geometric parameters

Authors

  • L. A. Khmara Department of Building and road machines. State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine, Ukraine
  • O. O. Dakhno Department of Building and road machines. State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine, Ukraine

Keywords:

Excavator, telescopic working equipment, trends working equipment.

Abstract

Summary.  Raising  of  problem.  The  most  common  is  commonly  used  building  machinery  is  hydraulic excavator.  One of the main directions of improvement of working equipment  excavator at present is the development and  creation  of  new  structures  excavators  that  allow  for  increased  technological  capabilities  through  the  ability  to modify  the  geometrical  parameters  of  working  equipment,  thanks  to  both  new  structures  created  with  new  and traditional  elements  and  equipped  with  telescopic  working  equipment  such  as  boom  and  telescopic  handle,  with  the change of these parameters is smooth and it is possible to carry out a broad adaptation to various working conditions and reduce the number of specialized equipment at the construction site.  A promising area of earth-moving equipment is telescopic hydraulic excavator working equipment that maximizes digging depth and height of unloading, increase the amount of developed ground with parking and a range of working equipment to quickly change a wide range of geometric parameters of equipment and use a  wide range  of  work bodies  with telescopic  working equipment allows workers  to  combine  operations  with  the  simultaneous  change  of  linear  dimensions  that  will  reduce  cycle  time  and allows you to perform planning work. From this it follows that the problem of the study and definition of rational design parameters  telescopic  loader  working  equipment  is  relevant.    The  purpose  of  the  article.  Identify  the  trends  of excavator  working  equipment  with  variable  geometrical  characteristics  of  working  equipment  and  analyze  these designs.  Conclusion.  The  review  and  analysis  revealed  a  trend  of  excavator  working  equipment  with  variable geometrical  characteristics of working equipment, advantages and disadvantages of existing equipment. To change the geometrical  parameters  in  real  working  equipment  designs  commonly  used  design  enlarged  and  additional  elements section  and  telescopic  handle,  with  the  use  of  telescopic  boom  mechanisms  attention  is  almost  given.  The  authors provided  analytical  equation  to  determine  the  dimensions  of  the  work  equipment  based  on  set  parameters  and recommendations on the use of telescopic boom elements in hydraulic excavator  working equipment.

Author Biographies

L. A. Khmara, Department of Building and road machines. State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine

Doctor of Technical Sciences, Professor.

O. O. Dakhno, Department of Building and road machines. State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine

postgraduate

References

Khmara L. A., Kravets' S.V., Skoblyuk M. P., ta in. Mashyny dlya zemlyanykh robit: pidruchnyk [Machines for earthworks: manual]. – Kh.: KhNADU, 2014 – 548 р.

Khmara L.A. Otsenka effektivnosti teleskopicheskogo rabochego oborudovaniya odnokovshovogo gidravlicheskogo ekskavatora [Evaluating the effectiveness of telescopic the working equipment of hydraulic excavator]. Coll. scientific works: Construction, materials science, mechanical engineering. – D.: PSACEA, 2002. - №15. - P. 143-150.

Khmara L. A., Dakhno O. O., Romanovs'kyy O. L. Tendentsiyi rozvytku robochoho obladnannya hidravlichnykh ekskavatoriv zi zminnymy heometrychnymy parametramy [ Tendencies of Development of hydraulic excavator working equipment with variable geometric parameters]. Visnyk NUVHtP. – Rivne: NUVHtP, 2015. №2 (70). – P. 433-448.

Khmara L.A., Kolisnyk M.P., Stanevskyy V.P. Modernizatsiya ta pidvyshchennya produktyvnosti budivel'nykh mashyn [Modernization and increase productivity of construction machinery]. – K.: Budivelnyk, 1992. – 152p.

Balovnev V.I., Khmara L.A. Intensifikatsiya razrabotki gruntov v dorozhnom stroitelstve [Intensification of digging of soil in road construction]. – M .: Transport. 1993 – 383p.

Specifications ZX210LC / ZX210LCN TYPE H15LD SUPER LONG FRONT [Electronic resource]// Promotional brochure. – 2013. – С. 36. – Access to the brochure: http://www.hcme.com/content/download/7555/80402/file/KA-EN097EU.pdf.

Specifications SUPER LONG FRONT Komatsu [Electronic resource]// Promotional brochure. – 2015. – С. 12. – Access to the brochure: http://www.komatsuamerica.com/equipment/excavators/70001-260000lbs/pc390lc-10slf#productBrochure

New Holland MULTIFUNCTION E215b E245b // Promotional brochure. – 2009. – С. 8. Published by NEW HOLLAND KOBELCO CONSTRUCTION MACHINERY S.p.A. Italy - LEADER Firenze - Cod. 30 460GB -Stampato 03/09

Smolyanitskiy N.V. Gidravlicheskie ekskavatoryi. Chast pervaya. Opredelenie parametrov [Hydraulic Excavators. Part one. Defining parameters]/ E.A. Smolyanitskiy, N.V. Mokin– N.: Stroyizdat, 1990, 281s.

Khmara L.A., Dakhno O.O. Teleskopichne roboche obladnannya hidravlichnoho ekskavatora, otsinka yoho efektyvnosti ta vyznachennya ob"yemu kopannya gruntu [The telescopic working equipment of hydraulic excavator, evaluation of its effectiveness and determine of volume of digging soil]. Coll. scientific works: Construction, materials science, mechanical engineering. – D.: PSACEA, 2012. №.66.4.2. – P. 29-37

Khmara L.A., Dakhno O.O. Vyznachennya teoretychnoho ob"yemu kopannya gruntu odnokivshevym ekskavatorom z teleskopichnym robochym obladnannyam [Determination of theoretical volume of soil digging of excavator with the telescopic working equipment]. Coll. scientific works: Construction, materials science, mechanical engineering. – D.: PSACEA, 2012. №.66.4.2. – P. 38-49.

Khmara L.A., Dakhno O.O. Formuvannya ta otsinka efektyvnosti teleskopichnoho robochoho obladnannya odnokivshevoho hidravlichnoho ekskavatora. [The formation and evaluation of efficiency of telescopic working equipment of hydraulic excavator]. Coll. scientific works: Co nstruction, materials science, mechanical engineering. – D.: PSACEA, 2012. №.66.4.2. – P.142-154

Khmara L. A., Dakhno O. A. Teoreticheskie osnovyi formirovaniya teleskopicheskogo rabochego oborudovaniya odnokovshovogo gidravlicheskogo ekskavatora. [Theoretical bases of formation of a telescopic working equipment of hydraulic excavator]. Stroitelnyie i dorozhnyie mashinyi [Building and road machines]. – M.: Ltd. «SDM-Press», 2015. #12. – P. 44-50.

Khmara L. A., Dakhno O. A. Teleskopicheskoe rabochee oborudovanie gidravlicheskogo ekskavatora i otsenka ego effektivnosti [The telescopic working equipment of hydraulic excavator and evaluation of its effectiveness]. Stroitelnyie i dorozhnyie mashinyi [Building and road machines]. – M.: Ltd. «SDM-Press», 2013. #11. – P. 8-11.

Published

2016-04-26

Issue

Section

Lifting and transport, construction and road machines and equipment