Temat: arm - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Experimental investigation of ied interrogation arm during normal operation
Autorzy:: Barnat, W.
Gotowicki, P.
Kiczko, A.
Dybcio, P.
Szczepaniak, M.
Jasiński, W.
Powiązania:: https://bibliotekanauki.pl/articles/243002.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: IED
improvised explosive device
interrogation arm
Opis:: The paper presents experimental static tests of IED interrogation arm for Shiba special vehicle. The test was performed by Military University of Technology and Military Institute of Engineer Technology. A number of strain gauges and camera markers were placed on the arm to allow recording strains and movements of specific construction points. The arm's motion was recorded using high speed camera. The equipment used were Vishay EA 06 120LZ 120 strain gauges with ESAM Traveller bridge. The sampling rate was 1000 Hz. The test was to pick up maximum design weight, move it to maximum overhang and then drop it on the ground. During the test, signal from gauges and video capture was recorded. The data was then processed using Thema 3D software to obtain markers displacements and angular changes of both arm parts. Afterwards, the test was repeated for different weight. The analysis showed, that maximum stresses in examined construction parts did not exceed yield stress of material. As well as that, in-depth motion analysis of the arm was conducted. Further works are twofold. Firstly, there will be tests concerning arm under dynamic load occurring during normal maintenance During this test only strains in specific construction parts will be recorded. Secondly, numerical model of an arm will be developed and validated using data obtained during both tests. This will help visualize stress distribution in each arm's part.
Źródło:: Journal of KONES; 2012, 19, 4; 571-575
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The analysis of friction in the bearing of rocker arms
Autorzy:: Kubiak, P.
Siczek, K.
Powiązania:: https://bibliotekanauki.pl/articles/244722.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: rocker arm
slide bearing
combustion engine
friction
Opis:: Rocker arms are important parts in many valve train systems of combustion engines. They are responsible for translating the profile of the camshaft into motion for opening and closing the inlet and outlet valves. The design, materials and lash adjuster elements for existing rocker arms were discussed. The modified rocker arm bearing was designed for the investigated Benzer 50cc four-stroke engine. The modification for the analysed engine includes the change of bearing for both inlet and outlet rocker arms. The original rocker arm bearing is of the slide type and mates with the axis fixed via the pin to the cylinder head. The modified bearing can be of the needle roller or the slide type and include two bearings mating with the axis, to which the rocker arm is fixed. The aim of the presented study was to obtain the courses of pressure in cylinder against the crankshaft angle, which was needed to calculate the loading force of rocker arm bearing and then friction torque therein. The models of valve train assembly and of the bearing operating under boundary friction were elaborated. Resulted values of the friction torque in rocker arm bearing for different operating conditions of engine were presented in the paper.
Źródło:: Journal of KONES; 2016, 23, 2; 231-238
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Development of a simplified method for measuring engine motoring friction and its application to valve train friction measurement
Autorzy:: Nakashima, K.
Kato, T.
Goto, K.
Murakami, Y.
Powiązania:: https://bibliotekanauki.pl/articles/241837.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine friction
motoring friction method
valve train
rocker arm
follower configuration
Opis:: We developed a simpler and less expensive method for measuring friction. Our equipment floats the double-end shaft motor by supporting both sides of the motor shaft with bearings, allowing the stator within the motor case to swing on the rotor with the shaft. Two arms were installed in the motor case; one is attached to a load meter; the other to a balance weight. The motor shaft is connected to the engine shaft, and when the engine is operated by the motor, torque is exerted on the stator with the motor case in the direction opposite to the motor shaft rotation, with engine friction acting as the reaction force. Torque is calculated by multiplying the arm length by the load as measured by the load meter in the arm. As an application of our new motoring friction test method, we measured valve train friction. The cylinder head of a single cylinder gasoline engine was clamped on a test bed, and its camshaft was connected to our friction measuring equipment. Utilizing various follower configurations of the rocker arms, we investigated the friction loss between the rocker arms and the cam. We thus clarified the effect of the valve-opening period and the valve lift on friction loss under various camshaft rotation speeds, and understood the lubricating conditions between the rocker arms and the cam.
Źródło:: Journal of KONES; 2016, 23, 2; 261-267
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Remote controlled mobile inspection robot
Autorzy:: Filipek, P.
Kamiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/242177.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mobile inspection robot
ventilation duct
structure of the running system
mobile robot arm
supporting vertical pressure wheel
camera positioner
environmental parameter sensors
Opis:: Provision of well-being in rooms is associated with their good ventilation. Good ventilation is influenced by cleanliness of ventilation ducts. The article presents a drive-by-wire version of a mobile inspection robot for ventilation ducts. A handler, which is movable in three axes and ended with a grab, a supporting vertical wheel (to reduce wheel skid) as well as a colour camera, a distance sensor and two light sources (LED and halogen lamp) on a rotary platform have been placed on a circular chassis. Apart from performing the inspection function, the operator of the "Inspector 1" robot may remove bigger pieces of dirt and garbage from a ventilation shaft using the handler and the grab. The device is powered from a 12 V / 5 Ah battery. A robot controlled using a control panel allows accurate illumination of the internal walls of the duct and wireless transmission of a colour image to the operator's monitor. The rotary platform on which the camera with lighting is placed is also capable of tilting up and down. The robot's drive has been resolved in a way that makes it as manoeuvrable as possible. Two front drive wheels operate independently and two rear wheels are easy-running. The robot will also allow recording the following environmental parameters in the ventilation shaft: humidity, temperature, draught force and direction and the presence of gases. The entire robot's electronic system is based on battery-powered supply (12V/5Ah) which is sufficient for approx. two hours of continuous operation. The voltage of the battery is constantly monitored and should it drop.
Źródło:: Journal of KONES; 2011, 18, 2; 129-135
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Structural solutions of driving system and sets remotely controlled vehicle to the inspection of ventilating pipes
Rozwiązania konstrukcyjne układu jezdnego i podzespołów zdalnie sterowanego pojazdu do inspekcji kanałów wentylacyjnych
Autorzy:: Filipek, P.
Kamiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/245751.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mobilny robot inspekcyjny
wspomagające pionowe koło dociskowe
kanał wentylacyjny
konstrukcja układu jezdnego
ruchome ramię robota
pozycjoner kamery
mobile inspecting robot
ventilation pipe
driving system construction
mobile robot arm
helping vertical tighten wheel
camera tripod
Opis:: This article shows function and construction assumptions of mobile, wireless inspection-cleaning robot of ventilating pipes. Robot has got cordless colour camera. Robot has got many different sensors (flow and direction of air, gas, humidity and temperature) it can exactly diagnosed canal in respect of efficiency and presence of fire or gas. Robot arm is equipped in four changeable endings: clutch with pincer, taking in shovel, two traverse brushes (deaning ventilation canals about square or rectangle section) and brush about oblong pivot (cleaning ventilation canals about circled section). Thanks to changeable endings robot can fast become inspector from a cleaning machine. Helping vertical tighten wheel is a innovation introduced to the robot construction, in result it increases wheels tighten to the ground. It will decrease wheel skid and it make possible to drive under larger inclination or in vertical canal. Tighten power vertical wheel to over head partition of ventilation canal is regulated by the tighten sensor. This article shows modelling construction elements of the robot. In certain domains work, the elaborated robot exceeds with functional quality industrial robots by using in it several environmental sensors and innovations.
Artykuł przedstawia założenia funkcyjne i konstrukcyjne mobilnego, bezprzewodowego robota do inspekcji i czyszczenia kanałów wentylacyjnych. Robot wyposażony w kolorową kamerę przekazuje obraz bezprzewodowo. Wzbogacony o różne czujniki (min. przepływu i kierunku powietrza, gazu, wilgotności i temperatury) może dokładnie zdiagnozować kanał pod kątem sprawności oraz obecności gazu lub ognia. Ramię robota jest wyposażone w cztery zamienne końcówki: chwytak ze szczypcami, łyżkę nabierającą, dwie szczotki poprzeczne (czyszczenie kanałów o przekroju prostokątnym lub kwadratowym) oraz szczotka o osi podłużnej (czyszczenie kanałów o przekroju kołowym). Dzięki wymiennym końcówkom robot może szybko przeistoczyć się z inspektora w maszynę czyszczącą. Wspomagające pionowe koło dociskowe jest innowacją wprowadzoną do konstrukcji robota „Inspektor l" w celu zwiększenia docisku kół do podłoża. Zapewni to zmniejszenie się poślizgu kół oraz możliwość jazdy pod większym nachyleniem lub w kanale pionowym. Siła docisku koła pionowego do górnej ścianki kanału wentylacyjnego jest regulowana za pomocą umieszczonego w konstrukcji czujnika nacisku. W artykule przedstawiono zamodelowane elementy konstrukcyjne robota.
Źródło:: Journal of KONES; 2009, 16, 4; 75-82
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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