Road machinery

The system consists of two parts, which can be independently added to the mixing depth control device on the mixing machine and the rotor lifting hydraulic system, and has the characteristics of simple structure and low cost. 3 Reference 2 Electrical System Improvement and Maintenance Publication, Zhong Xie Yongsheng Road Construction Machinery and Construction Mechanization. The use of 2171.13,15 mixers for several years discovered some deficiencies in the original design and improved them; and a more comprehensive discussion of equipment maintenance must be carried out throughout the installation, commissioning and use of imported equipment. 4 Wu Runcai 0120005286 Centrifugal Stabilized Soil Mixer New All-wheel Steering System Journal, Zhongssuan, Construction Machinery. 2000,313.78 The article takes the model 8450 stabilized soil mixer as an example to analyze the composition and characteristics of the new all-wheel steering hydraulic system, and gives the mathematical model of the rear-wheel electro-hydraulic servo steering system, and analyzes the stability. The conclusions apply to all mid-mounted stabilized soil mixers. 3 reference 3GJ20005287 mixer hydraulic pump distribution plate repair magazine, the middle section of the tiger construction machinery. 2000,312.8 The pressure pump oil is mixed with copper and the valve plate wears, causing the pressure of the main hydraulic pump to drop, and the main engine cannot work normally. The article describes the overhaul methods and procedures.

GJ20005288 D 1200 Asphalt Mixer Paving Machine, Zhong Chang An Qun Construction Machinery. 2000, 312.3 The Ding 1200 Asphalt Mixer paving machine developed by Xi'an Road Construction Machinery Plant is used to pave the bottom layer and surface layer of asphalt mixture as well as the stable soil and other materials of the base layer. The paper introduces the main performance parameters and structural features of the aircraft. 1 Tentali 620005289 Road Widening Pavers Publication, British company introduced a wide variety of asphalt concrete paving machine for road widening. When working. The body shook and discharged to both sides. The small-diameter front wheels are steering wheels, and the larger diameter rear wheels are the rollers. The engine is equipped with a relatively high-powered internal combustion engine and a hydraulic plate for compacting the compounded material. The width of the curved flat blade is 9 sisters. 1. In addition, a chain scraper conveyor with a width of 450 and a propeller type vibrating roller are installed on the machine. 1 GJ20005290 Device for Extracting Substances from Mixtures This patented device is used to extract viscous samples from mixes, such as bitumen. The device consists of a sieve member for screening the sample. A solvent supply system and a discharge member for removing the analyzed material. The structural features of the device ensure the minimum consumption of solvent. The feed member is made into a solvent feed spray device having a rotary spray head or a fixed spray nozzle type. 9GJ20005291 Asphalt Pavement Adhesive Layer Reinforced Woven Net Patent Honeycomb Woven Net is mainly used for the reinforcement of adhesive layer of asphalt pavement. The net is formed by weaving cross-woven or synthetic fiber or heterocyclic compound fiber lines that can withstand loads, and is glued or welded in sections, and coated with attachments that have a chemical bond to asphalt. Woven nets have good adhesion properties and are non-woven, thin materials. 3 GJ20005292 Leaching concrete mixing equipment only, in the mixing equipment, the material is conveyed into the inclined drying cylinder by the conveyor, the end of the cylinder is equipped with a fire box with a nozzle, and there is a discharging device at the other end. Through them, it is ensured that the materials are sent to the screening machine and sieved according to the grain size, and then the materials enter the hot hopper successively. Metering hopper and asphalt meter connected in the stirring device. The hot gases and evaporation products generated during the combustion process enter the dust removal system and are mixed with the asphalt concrete ingredients. The process delivery of the ingredients to the mix must be carried out with a conveyor that is arranged at an acute angle to the main plane of the vertical line in the conveying direction. The section of the fire box of the drying drum is compared with that of the standard drying drum. Similar section with injection nozzle. A fast kinematics model of a section of bituminous concrete particles with recurring fall. The result of this process can be the productivity and quality of the asphalt concrete mix ingredients. 1 Chen Yuanji rock drilling machinery and pneumatic tools 020005 slave 3 rail hydraulic rock drill hydraulic system program discussion, Zhong Li Huijie mining machinery.

This paper describes the hydraulic system exposed during the actual use of rail-mounted hydraulic rock drill, expounds the combination of drilling machine and oil supply pump, and discusses the design of the hydraulic system of the machine. Introduced the function of the hydraulic system, put forward the design scheme of two hydraulic systems, it is simple and function is complete, the structure is compact and convenient to maintain, raise the efficiency and reduce the energy consumption. Spiral Drilling Machines for Rock Drilling Rigidity, Design of Journal of Zhonghuan Yanping Mining Machinery. In 1999, the structural features of the screw-swing cylinder and its role in the drilling rig were described. The structure of the large-angle swing helical cylinder and the determination and calculation methods of the main parameters were introduced.

Discussed several structural types of the back transition mechanism, and pointed out that modern drilling rigs mostly use both the existing swing and the return complex.