Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 4

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Derailments of wagons during sorting on marshalling humps at the hump yards

100%

Sergejeves D. , Gavrilovs P.

2008

tom nr 2

CD-CD

On the Latvian railway the last years there has been an increase of number of derailment of freight carriages. For the determination of reasons, resulting in the derailment of freight carriages, an analysis of derailments was carried for the last 10 years.

Research of the defective frog wing OF 1/11 mark

100%

Gavrilovs P. , Ivanovs V.

tom T. 12, z. 4

119--126

In this article, for the first time, research of the defective frog wing of the 1/11 mark on the Latvian Railway has been carried out. In the process of which was collected, processed and the analysis of points defects on the Latvian Railway was carried out for eight compartments of the track distance during 2014, 2015 and 2016 (Developed a chief of defectoscopy shop V. Glotov, approved CD the chief of the distance V. Makedon). The frog wing of the 1/11 mark (the 60 E1 DO 04 07 frog type) was considered according to the basic classification of the defects, and an analysis and research of the cause of its fracture were carried out.

Analysis of the restoration process of surfaces of railway turnout elements by build-up welding

80%

Sergejevs D. , Tipainis A. , Gavrilovs P.

2013

tom R. 14, nr 3

269-271

The practice has show that restoration of the surface of railway turnout elements by a build-up welding very often is unsuccessful due to subsequent origination of areas of premature destructions such as shivers, stratification, spalling, a.o. Experimental study revealed that causes of the defects are due to welding technology violations and ineffective turnout element existing defect diagnosis methods applied.

Determination of amplitudes at oscillation of carriages on brake position of moderator-coolant?

80%

Sergevevs D. , Sergevevs A. , Gavrilovs P.

tom nr 6

We present equations to describe in analytical form a dynamics of a freight carriages group on a sorting hill. The purpose is to determine analytically the amplitudes of oscillations, induced by a braking process on a moderatorcoolant. The groups of carriages needed to be braked may consist of four, six and ten carriages. The theoretically varied parameters are the longitudinal speed of the group and a period of brake apply, as well as types of the freight carriages. The results allow to choose the regime of safe braking in order to avoid the derailment.