In the territories of the Russian North in connection with the operation and development of oil and gas complex is operated by a large Park, the hydraulic mobile machines. Operation of such equipment is difficult in conditions of low negative ambient temperatures due to changes in the thermal state of units, elements of machine systems. The hydraulic system unlike other systems of machines is distributed throughout the machine, has a large length, many elements. The heating efficiency of which depends on the order, the simultaneity of inclusion, taking into account the duration and intensity of heating of each element. This problem is solved by automating the process of thermal preparation of hydraulic machines. For this purpose the scheme of automation of process of thermal preparation of elements of the hydraulic drive of the mobile car is developed. The algorithm of the program of the control unit of the process of thermal preparation is presented. For example, heating the working fluid exhaust gases of internal combustion engines developed functional scheme of automatic control system by the process of heating the working fluid in the hydraulic reservoir.

Keywords: operation of machines in conditions of the North, hydraulic machines, thermal preparation of the hydraulic drive, hydraulic drive elements, automation of the thermal preparation of the hydraulic actuator, the control process of heat training, systems trai

In the context of the autonomous functioning of special equipment in the Far North and the Arctic is necessary to use its internal resources to maintain optimal thermal state units and units. This can be accomplished using a heat recovery system of the internal combustion engine. For this purpose the heat accumulator. The mathematical modeling of the thermal state of the heat accumulator in the cooling stage. The main factors affecting the cooling time of the thermal battery: TA insulation thickness, weight coolant, coolant temperature, air temperature, wind speed. Also developed a mathematical model of the process of cooling the heat accumulator in general terms. It is presented in graphical form, which simplifies the determination of the time of cooling the heat accumulator in its design. For the definition of Q and Bi developed a program «Time».

Keywords: operation, heat storage, thermal preparation, heat transfer, heat recovery system, low negative temperature

One source of thermal energy for heating hydraulic road construction machinery, operating in Russian regions with severe climatic conditions, are recyclable heat internal combustion engine exhaust gases. The article investigates the warm working hydraulic fluid hydraulic drive construction machinery diesel engine exhaust gases. With the aim of reducing warm-up time suggested the use of small hydraulic drive hydraulic tank with a heat exchanger. To study an experimental setup that is mounted on the loader Mustang 3300V. Experiments were carried out in the winter, warming the working fluid exhaust gases are two modes of internal combustion engines - at no load and at medium speed. Dynamics of thermal processes was recorded by an electronic memory recorder. As sensors used thermometers - resistance. As a result, it was obtained according to the temperature of the working fluid from the hydraulic tank warm-up time.

Keywords: heating hydraulic drive, hydraulic tank, heat recovery, construction machinery, hydraulic fluid

The article describes the working conditions of earth-moving machinery. The main ones are climatic and groundwater. At the same time in different conditions the potential of machinery is not used efficiently, ie they do not dogruzheny of the energy supplied in the working process of interaction of the ""working body - the ground"" or overwhelmed. It was determined that the basic properties of machines that determine the quality of reliability, and adaptation to the operating conditions. On this basis, it is determined that there is a possibility to increase their efficiency by adapting the machine to certain operating conditions. In this regard, necessary methods and means for correcting the energy impact of the machine on the ground in its development. This problem is solved by studying the laws of interaction of the working body digger ground. And on this basis the development of control actions on machines (changing its operating speed, cutting depth, cutting angle)

Keywords: digger, adaptation, adaptation, development of soils, working body, working conditions

In developing training tools thermal units, assemblies and systems of machines operating at low temperatures below zero, should pay more attention to the monitoring of their thermal state. At this point, there are many ways to measure the temperature. All of them are divided according to the principle of action. There are a large number of sensors for measuring temperature, based on these principles. However, when building automation means of thermal preparation machines play a special role performance sensors of different design when used in automation nodes to determine the temperature units, assemblies and systems of machines. At this point in the design automation received widespread microcontrollers, comparators, and which comprise analog-digital converters in a single chip, and also capable of converting analog electric quantities into digital form. This ensures high accuracy.

Keywords: thermal state thermal training machine, temperature measurement, a semiconductor sensor, a thermistor, a thermocouple, a microcontroller, an analog-to-digital converter

Abstract: Operation of motor transport and special equipment is carried out in difficult conditions, the impact of environmental conditions (temperature, humidity, dust, wind, solar radiation) and changes in modes of operation of the machine. This affects the performance of equipment, the number and complexity of repairs. Away from fixed bases (in the field), the problem is particularly acute repairs. One of the most energy-intensive and expensive works are welding (welding parts with a break, welding cracks, fusing metal layer on the worn surface, metal cutting). In this work the welding equipment affect the voltage drops in the supply mains, therefore, produces a large number of failures such equipment. After the equipment is accompanied by an increased amount of electric power consumption, this results in material costs. Previously proposed equipment has improved mass, which reduces the efficiency of the welding. Based on this study was proposed innovative design welding inverter using the resonance effect, with enhanced reliability, low-cost design version (in terms of mass production). In order to improve the reliability and reduce the cost of the proposed design of inverter proposed a number of new approaches. Full-bridge inverter is studied welding power source with the implementation of the resonance effect with a stable and smooth operation, high reliability, because the circuit of the inverter is not sensitive to changes in the supply voltage.

Keywords: construction machinery, parts, low temperatures, thermal state, measurement, monitoring, control, sensor, hardware-measuring system

Abstract: Operation of motor transport and special equipment is carried out in difficult conditions, the impact of environmental conditions (temperature, humidity, dust, wind, solar radiation) and changes in modes of operation of the machine. This affects the performance of equipment, the number and complexity of repairs. Away from fixed bases (in the field), the problem is particularly acute repairs. One of the most energy-intensive and expensive works are welding (welding parts with a break, welding cracks, fusing metal layer on the worn surface, metal cutting). In this work the welding equipment affect the voltage drops in the supply mains, therefore, produces a large number of failures such equipment. After the equipment is accompanied by an increased amount of electric power consumption, this results in material costs. Previously proposed equipment has improved mass, which reduces the efficiency of the welding. Based on this study was proposed innovative design welding inverter using the resonance effect, with enhanced reliability, low-cost design version (in terms of mass production). In order to improve the reliability and reduce the cost of the proposed design of inverter proposed a number of new approaches. Full-bridge inverter is studied welding power source with the implementation of the resonance effect with a stable and smooth operation, high reliability, because the circuit of the inverter is not sensitive to changes in the supply voltage.

Keywords: repair, motor trucks, welding, full-bridge inverter welding power source, the resonance effect.

The substantiation of the need for the preparation of thermal hydraulic drive road construction machinery (SDM) operating in the North. Given that a significant number of failures falls on hydraulic drive elements, it becomes urgent need to study their work and causes of failures. In order to analyze the thermal training funds, the development of new systems is necessary to study thermal characteristics of hydraulic drive elements SDM operated at low subzero temperatures. It is necessary to take into account the rate of change of the processes occurring in the hydraulic drive. In accordance with the above requires a quality measuring equipment, created on the basis of analog-to-digital converters. For this analysis instrumentation for experimental studies. Currently, at the Department of Transportation and technological systems developed hardware and software for temperature measurement system for monitoring hydraulic drive elements SDM.

Keywords: construction machinery, operation, negative temperature, hydraulic, thermal preparation, measurement, sensor