• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 183
  • 60
  • 31
  • 31
  • 17
  • 17
  • 8
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 1
  • 1
  • Tagged with
  • 438
  • 82
  • 68
  • 61
  • 33
  • 33
  • 31
  • 31
  • 29
  • 27
  • 26
  • 26
  • 25
  • 24
  • 24
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
361

Stavebně technologický projekt výzkumného centra CEITEC - Brno / Construction technology project of research center CEITEC - Brno

Roubíček, Marek January 2014 (has links)
The subject of the Diploma's thesis is " Construction and technological solutions of CEITEC Science Park in Brno". The content is a solution of the whole project from a commercial, construction-technological and time costingness side. The purpose was a preparation of all works before starting an execution.
362

Pojezdové a zvedací zařízení / Travelling and lifting mechanism

Bernard, Vladislav January 2010 (has links)
The thesis deals the design and calculation of handling equipment designed for transport of Bell helicopter between the airport and hangar space. The first part contains an analysis of possible mechanisms applicable to the handling of the helicopter as well as an overview of the overall evaluation of some producers, engaged in the manufacture of this type of device. The second part presents the design, necessary calculations and drawing documentation. Handling equipment is designed for loading kapacity of 2000kg with a minimum 80 mm lift of helicopter to ensure safe transportation to the required distance.
363

Otočný zvedací stůl QHZ 20 / QHZ 20 lifting turntable

Bursík, Miroslav January 2011 (has links)
This master’s thesis deals with the design of the new concept of lifting turntable QHZ 20. The main objective is to reduce the installation depth of table. Part of thesis is background research of individual components of the forging complex with hydraulic press CKW 25. It describes the current structure QHZ table, comparing the advantages and disadvantages of possible solutions of the table. The work also includes design, description and calculation of the chosen solution.
364

Stavitelné rozpěrné zařízení pro zvedací práce v hale / The changeable strut devices for cranes in hall

Dvořáček, Jan January 2012 (has links)
This thesis was created for Bosch Rexroth in order to simplify the lifting work in the manufacturing hall. There was made the construction project of changeable strut devices for lifting loads. The project is comprised of two parts. The first deals with the analytical calculation and the second part consists of a numerical calculation using the finite element method.
365

Tlakové ztráty a tepelný výkon hydraulických kostek lineární integrované hydraulické jednotky / Pressure losses and heat output of the hydraulic blocks of a linear integrated hydraulic unit

Soukup, Lubomír January 2012 (has links)
A common problem in the design of hydraulic systems is the pressure losses caused by movement of viscous liquid in individual elements of hydraulic circuits. These losses have negative effects on the overall efficiency of hydraulic systems and thus their overall operation. There is a change in temperature of working fluid and components (elements) of circuit due to the result of the mentioned losses. This master thesis is focused on the heat generation (output) in hydraulic cubes of a linear integrated hydraulic cubes (here in after LIHJ) which is the prototype of hydraulic lifting equipment. Losses, arising during the operation LIHJ in pipes and in hoses, can be determined numerically and experimentally. Most of hydrostatic transmitters and others hydraulic components are almost always supplied with the necessary documentation which contains all the necessary information such as experimental characteristics, etc. However problematic parts are the hydraulic blocks which are specific to their size and function. Of course, each manufacturer must prepare technical documentation including characteristics which are important for trouble-free operation of the hydraulic system. The main aim of this work is to determine pressure losses and the heat generation (output) in the hydraulics blocks by program which is used for creating geometry and computing using software like Ansys Fluent, which is based on the finite element method. If these calculations could be compared with experimental measurement technically, then heat generation (output) in both the cubes will be evaluated towards other hydraulic components and the whole system (device). The simulation results will be implemented in software which is used for calculation of heat generation in LIHJ at different operating modes and loads. Furthermore, these results will be the basis for the design of geometry of hydraulic blocks with low pressure losses which will reduce energy consumption of the device. At the end of this thesis, some advanced methods for the manufacturing of hydraulic blocks are briefly introduced, namely the method 3-D casting.
366

Návrh horního nosníku dvousloupového regálového zakladače / Design of the upper beam two columned shelf stacker

Kuděla, Jan January 2014 (has links)
This master thesis deals with a concept of two columned shelf stacker’s upper beam. The first part contains a research of storage systems used in logistics and a description of the shelf stack’s basic parts. The second part is dedicated to the draft of the pulley arrangement with a rope calculation, pulleys and shafts, in the same the draft of the pulley attachment to the rope leading to the counterweights. It is followed by the concept of the couple winch drive ensues synchronized with the electronic cardan. The final part depicts the dynamic analysis of the lifting truck’s movement in the dependence on the load size and distribution respecting the dynamic effect of the counterweight act.
367

Hydraulická soustava hydraulické ruky / Hydraulic system of hydraulic crane

Lukeštík, Přemysl January 2014 (has links)
This thesis deals with the design of the hydraulic system of hydraulic crane. It focuses on the description of the individual elements of the existing hydraulic system, analysis of forces, calculate diameters of linear hydraulic motors and their pressures and flow rates.
368

Jeřábová kočka mostového jeřábu 32 t / Crane trolley 32 t

Knapec, Tomáš January 2015 (has links)
This master’s thesis is the design development of crane trolley, which is used to manipulate with scrap material. The target of this thesis is to develop a technical report including calculations of running and lifting gear, strength calculation of frame of trolley and drawings containing assembly of crane trolley and assemblies of running and lifting gear. Desired parameters of this trolley are maximum load capacity 32 000 kg, lifting height of 11 m, working lifting speed up to 10 m/min and working running speed up to 50 m/min.
369

Pomocná jeřábová kočka licího jeřábu / Auxiliary crab for overhead foundry crane

Adam, Petr January 2016 (has links)
This master thesis deals with issue design of crab trolley. Concretely is acted about auxiliary crab trolley with required capacity 65 000 kg. This crab is on overhead crane, which is situated at hall of foundry. In particular chapters is processed design of lifting mechanism and travelling mechanism, which is amended to strength control of frame. This whole leads to output solutions, which is drawing documentation.
370

Jeřáb radiální portálový / Radial gantry crane

Dias, Aleš January 2016 (has links)
The aim of my thesis is a conceptual design radial gantry crane including the important strength calculations according to the standards and examinations by means of ANSYS Workbench. The lifting capacity is 1500 kg, the length of the boom is 12 000 mm and the height of lifting is 3600mm. The crane is designed as fully revolving and the angle turning is 360°. The work also includes the selection of a suitable lifting gear from the manufacturer´s catalogue including the accessories casters, all important components and also FEM construction analysis.

Page generated in 0.1321 seconds