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The article presents a variant of improving the design of the working equipment of a single-bucket excavator. The proposed technical solution allows the development and sampling of solid and frozen soil without changing the working equipment from the bucket to the hydraulic hammer. The result is achieved by installing two hydraulic hammers on the front part of the bucket. Presents calculations of the hydraulic system of the excavator and hydraulic hammers, allowing to confirm the performance of the proposed solution. The methodology of technological operations is determined taking into account the use of the proposed technical solution.

Introduction.Two methods among five in regulatory documents of the Russian Federation can be interested for assessing the quality of traffic management by environmental indicators. Only such methods take into account the parameters of the traffic flow that affect the volume of emissions. The parameter influencing the results of calculations in both methods is an average motion speed. Moreover, there are areas on urban highways, where traffic moves unevenly (braking, dispersal, stopping). Therefore, such factor entails an increase in the volume of emissions from vehicles. At the same time, this uneven movement is largely due to the existing organization of traffic (TO) on certain elements of the street-road network (SRN). Accordingly, the method for calculating pollutant emissions to assess the quality of TO, which take into account the unevenness of traffic flow, should be developed.Materials and methods. The paper proposes to take into account the average speed of traffic in those parts, where the traffic flow moves stationary, and on the elements of the main traffic line, where the traffic flow is non-stationary, and to take into account additional emissions. Moreover, the additional emission from the traffic flow should be considered separately in the following cases: if the cars stop (there are deceleration modes, idling and acceleration) and in the situation, when cars decrease their speed (slowdown and acceleration).Results.As a result, the difference between calculations of carbon monoxide emissions by the proposed method and by the GOST methodology is 57%, and for emissions of nitrogen oxides is 94%.Discussion and conclusion. The proposed methodology allows accurately assessing the quality of the TO on the section of the urban highway and its individual elements on environmental indicators. In addition, the proposed methodology would allow carrying out calculations for the evaluation of road traffic projects and activities, which aim to reduce the harmful impact of traffic on the environment of the highway areas.

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The paper proposes a new variant of additional support improvement of the pipelayer boom. The supposed technical solution allows one to increase smoothing and stability of pipelayer operation. The result is achieved by adding extra elements into the construction of the pipelayer boom support. The proposed construction presupposes that cargo boom will be joined with the pipelayer support, which consists of a hydraulic cylinder and a metal base, used for cylinder fixation to the support with bolted-type connection. The relations, gained from the computed pattern of the pipelayer working equipment, are given to prove the efficiency of the proposed design solution. The calculated relations allow defining the size of the loads applied on the pipelayer. The results of the theoretical research, carried out in Solid works, are demonstrated in graphics, and it shows the stresses, shifts and deformations in boom design of the pipelayer used for long-distance pipeline placement. The additional advantage is that the size of the strength margin in the support structure of the pipelayer boom was obtained due to the conducted research.