Wyniki wyszukiwania - BazTech

1

Development of inpipe inspection robots with vibratory impulse actuator and investigation of their kinematic parameters

Pikunas A., Mistinas V., Spruogis B.

Zeszyty Naukowe Politechniki Poznańskiej. Maszyny Robocze i Transport

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2004

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Nr 58

39-47

EN

In this paper, a robot for inpipe inspection of underground urban gas pipeline is presented. The robot is developed for visual and non-destructive testing of the pipeline networks. The robot is configured as an articulated structure - resembling a snake shape. Two active driving vehicles are located in the front and the rear parts of the system. Passive modules such as a control module and other optional modules are inserted between the active vehicles. The design scheme of an inpipe inspection robot with a vibratory impulse actuator is discussed. The dynamic model of a robot with a vibratory pneumatic actuator was developed and the equations of its movement were derived.

PL

W artykule przedstawiono robota rurociągów gazowych przeznaczonego do nieniszczącej kontroli oraz nadzorowania powierzchni wewnętrznej rurociągu. Robot składa się z otwartego przegubowego łańcucha, w którym ogniwa napędzające znajdują się na jego końcach. Urządzenia kontroli nieniszczącej i nadzorowania powierzchni wewnętrznej rurociągu są umieszczone pomiędzy ogniwami napędowymi. Ponadto przedstawiono schemat konstruk cyjny napędu wibracyjnego robota. Stworzono model dynamiczny robota z napędem wibracyj nym i zbadano jego charakterystyki dynamiczne.

2

Research on the pipeline transport robots elements

Pikunas A., Spruogis B., Matuliauskas A.

Eksploatacja i Niezawodność

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2004

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nr 1

14-18

EN

In the article are reviewed constructions of the pipeline transport robots elements and scheme of new original construction is presented. The mathematical model of the pipeline transport robot is formed and its motion equations are presented.

3

Investigation of reliability of high-pressure fuel pumps

Pikunas A., Spruogis B., Jurevicius J.

Eksploatacja i Niezawodność

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2004

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nr 3

29-32

EN

This paper presents the research of faults of high-pressure fuel pumps (HPFP) as the main units of fuel equipment having influence on ifs reliability. Based by example of distributive-type ram HPFP-s, produced in Vilnius (Lithuania), there were examined the main indications of such failures and in accordance with the Waybull 's distribution law thwere were determined distributions of frequency of the random failures. Histogram of distribution of the random value, differential function and diagram of failure distribution of the HPFP-s are also presented.

4

Research of the efficiency of use of shock absorbers with controlled dissipative force in motor cars

Pikunas A., Spruogis B.

Eksploatacja i Niezawodność

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2002

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nr 1(13)

3-6

EN

Shock absorbers are chosen according to a certain average influence, so in a wider range of an influence of vibrations as well as on changes of the weight of the transported cargo a scantiness of ordinary shock absorbers comes to light. In the article, possibilities of an application of a shock absorber with magnetic liquid are discussed. In such case, dissipative features may be changed dependently on the level on vibrations of the amortized object. For this purpose, a feedback receiving signals from a seismic sensor is used. Vibration isolating features for the case when the signal is integrated for one or two times are described. In case of feedback according to the offset, i.e. when the signal of the accelerometer is integrated for two times, the efficiency of the vibration isolating system becomes independent on changes of the amortized mass.