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1

Power flows in a hydrostatic-mechanical transmission of a mining locomotive during the braking process

Samorodov Vadym, Bondarenko Anatoliy, Taran Igor, Klymenko Iryna

Transport Problems

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2020

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T. 15, z. 3

17--28

EN

This paper considers the braking process of a mine diesel locomotive with hydrostatic mechanical transmission (HSMT) operating according to the “input differential” scheme. Braking process modeling involves four implementation methods. Identification and systematization of basic regularities in the distribution of power flows within a closed transmission contour in the process of braking have been performed with the help of software support developed by means of MatLab/Simulink. The simulation results of braking due to the hydrostatic transmission and the braking system during the movement of a diesel locomotive in the transport and traction ranges are presented in the form of graphical correlations. The process of theoretical studies of the braking process of a diesel locomotive with HSMT operating according to the “input differential” scheme has helped determine that, in terms of deceleration at the expense of a hydrostatic drive (HSD) and braking system while preserving kinematic engine-wheels connection, it is not permitted to implement this method of braking process as it is followed by excess of the allowable value of working pressure differential within HSD up to 2.8 times.

2

Analysis of hydrostatic mechanical transmission efficiency in the process of wheeled vehicle braking

Taran I., Klymenko I.

Transport Problems

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2017

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T. 12, z. spec.

45--56

EN

To analyze the braking process of a mine diesel locomotive with hydrostatic-mechanical transmission (HSMT), a mathematical model has been developed. In contrast to available models, this one takes into consideration rules of changes in controlling the parameters of hydrostatic drive (HSD) and implementation methods for the braking process. Moreover, the model makes it possible to study changes in kinematic parameters, power parameters, and energy parameters of HSMT under various conditions of a mine diesel locomotive operation. It has been determined that the use of HSMT operating according to the “output differential” scheme is possible, providing kinematic disconnection of the engine from the driving wheels (for emergency braking with complete stop of the diesel locomotive) or at the expense of HSD while preserving the kinematic connection between the engine and the wheels (for deceleration). Use of the braking system together with HSD or the braking system only while preserving the kinematic connection between the engine and the wheels will result in HSMT failure.

3

Propozycja wykorzystania momentomierza do analizy układu napędowego lokomotywy typu LDS-100K-EMA

Dobrzaniecki P.

Maszyny Górnicze

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2014

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R. 32, nr 4

22--27

PL

Identyfikacja i rejestracja parametrów pracy układu przeniesienia napędu, umożliwia wykorzystanie ich w procesie diagnostyki, np. wyznaczania trendu awarii w zależności od obciążenia układu napędowego. Bezpośredni pomiar momentu obrotowego w układach napędowych maszyn roboczych nie jest spotykany. Związane to jest z potencjalnymi problemami podczas zabudowy urządzenia pomiarowego w łańcuchu kinematycznym oraz z podwyższoną ceną maszyny. Naprzeciw ekonomicznych konsekwencji rozbudowy układu pomiarowego pojazdu warto jednak postawić korzyści, wynikające ze znajomości przebiegu podstawowego parametru trakcyjnego, od którego wprost zależy wartość siły pociągowej. W artykule omówiono budowę typowego układu przeniesienia napędu w górniczym pojeździe szynowym, zaproponowano zastosowanie dodatkowego urządzenia pomiarowego w układzie przeniesienia napędu, a także przedstawiono sposób wykorzystania otrzymanych danych pomiarowych z użyciem dostępnych narzędzi programistycznych.

EN

Identification and recording of operational parameters of drive transmission system enable their use in diagnostics process, e.g. in determination of failure trend depending on load to drive system. Direct measurement of torque in drive systems of machines is not used. It is associated with potential problems during installation of measuring device in kinematic chain and with increased price of the machine. However, it is worth to compare cost of extending the measuring system and benefits resulting from the knowledge of time process of basic traction parameter, which directly affects the value of pulling force. The design of typical drive transmission system in mine rail vehicle is discussed, use of additional measuring device in drive transmission system is suggested and method for taking advantage of the obtained measuring data with use of available programming tools is presented.