Equipment foundation grouting classification and requirements

Equipment foundation grouting classification and requirements(a) classification of grouting and grouting materials1. The classification of groutingGrouting equipment is divided into a grouting and secondary grouting. A grouting is after coarse alignment equipment, for the grouting anchor bolt hole. Secondary grouting is in fine alignment equipment, to the grouting equipment between the base and foundation.2. The grouting materialGrouting material into fine stone concrete and shrinkage concrete, micro expansive concrete, epoxy mortar and other grouting material (such as CGM efficient non-shrinkage grouting material, RG early strength micro expansion size), etc.(2) equipment grouting requirements1. Reserve the anchor bolt hole or mechanical equipment between the base and foundation grouting and its configuration, performance and maintenance should conform to the current national standard "technical specification for concrete admixture application and relevant regulations of the common concrete mixture ratio design procedures.2. Reserve the anchor bolt hole should be clean before grouting, appropriate USES fine stone concrete grouting, the strength should be higher than basis or floor of the concrete strength level. Grouting should be compacted, should not make the anchor bolt skew and mechanical equipment installation precision.3. The equipment between the base and foundation grouting layer thickness should not be less than 25 mm, but for fixed pad iron or prevent oil and water from entering the grouting layer. Grouting should be laying outside before the template, the template to the spacing of the outside of the equipment base should not be less than 60 mm. Grouting layer equipment under load, should be set within the template. When the equipment is grouting layer and base surface contact requirements high, appropriate USES no shrinkage of concrete.Five new technology applications, mechanical equipment installationAlong with the progress of science and technology, mechanical equipment installation adopted many new technologies, such as:1. The laser technology and laser detection technology in applicationLaser alignment instrument and laser measurement system for long-distance rotary center line geometry, as well as the vertical degree, in mechanical axis of parallelism, flatness, straightness measurement. High measuring accuracy, simple operation and data display, storage and printing system, is currently in the cement equipment such as rotary kiln, coking equipment such as drying machine, steel rolling equipment such as transmission countershaft and power plant and other projects in the construction of the application.2. Large equipment hoisting using computer control of the hydraulic synchronizing lifting technology and the wireless remote control hydraulic synchronization technology and equipment of the hydraulic synchronizing lifting large components technology is a very distinctive installation construction of new technology, it is the component and equipment on the ground after assembling, the ascent to scheduled height in place. In the process of ascension, not only can control the motion and stress distribution of components and equipment, can also make components and stuck in the air and micro adjustment equipment, realize inversion construction and air splicing, complete human and existing equipment was unable to complete the task of large components and equipment installation is convenient, reliable and safe. On the basis of computer control and wireless remote control system, realize the remote control.1 P0753. The early strength, high strength concrete in the application of the anchor bolt hole groutingNewly developed concrete grouting anchor bolt hole (have a grouting) materials, direct injection equipment foundation, no vibration, no shrinkage, 24 h compressive strength of 50 million mpa. Equipment day after grouting anchor hole, then tighten the anchor bolts, construction convenient, early strength, high strength.4. Equipment modular integration technology applicationWith the development of modular construction equipment, this kind of equipment installation will be more and more.5. The integration of mechanical, electrical, hydraulic, computer measurement and control technology6. Pipeline comprehensive layout techniquesEngineering application of BIM technology, 3 d visualization technology can achieve comprehensive configuration line in computer simulation of the construction.1 h413014 accuracy control of mechanical equipment installation requirements Mechanical equipment installation task is after assembly, in place, looking for positive, fixed, make the precision of the its installation design, specification and standard requirements.A, mechanical equipment installation accuracyMechanical equipment installation engineering integrates a series of equipment is a set of device or a production line, so as to form a technical equipment system, and finally form the production capacity. Equipment installation accuracy refers to the installation process to ensure a complete set of equipment needed for the correct linkage between each independent equipment location accuracy; Single equipment through reasonable installation process and the manufacturing precision of adjustment method can reproduce; The whole sets of equipment in the use of three aspects, such as running precision accuracy.Second, the factors affected the accuracy of equipment installation(a) equipment foundation factorEquipment based on the installation accuracy mainly insufficient strength, the influence of uneven settlement and ant-vibration performance is insufficient. Equipment inspection, to install base if the strength is not enough, or continue to settlement, installation deviation change, influence equipment installation accuracy. Therefore, equipment installation shall be carried out after the foundation strength comply with the design requirements, is looking for leveling should be based on the settlement observation to determine stability after, or after the foundation stability for final adjustment. Equipment operation may produce larger dynamic load or after impact load, if the equipment foundation vibration resistance is insufficient, will also affect the equipment installation accuracy.(2) the shim and the primary and secondary groutingEquipment support on the shim and second grouting layer. When the shim is not smooth, contact is not good, primary and secondary grouting is not dense, strength is not enough, will affect the equipment installation accuracy. Therefore, shim should flush, burr, cushion between iron and foundation, pad iron, shim and equipment should be good contact between, shim not more than 5 pieces in each group, shim to compaction, shim between spot welding position, primary and secondary grouting should be vibrating compaction, strength shall comply with the rules and regulations of design or related.(3) the anchor boltAnchor bolt installation of verticality and fastening force influence equipment installation accuracy, anchor bolt installation if not vertical, nuts, washers) contact with the equipment will be skewed, local may also produce clearance, uneven, affect equipment fixed, bolt fastening force is not enough, also affect fixed equipment. In the operation of the equipment if not firm, in can produce vibration and displacement. As a result, the anchor bolt should be installed vertically, prevent shifts when pouring concrete. Anchor bolt fastening, should be required to design a fastening force requirements shall be determined using the torque wrench or tighten the hydraulic bolt tensioning jack, guarantee the preload value.2 P076(4) equipment manufacturing and assembly1. The equipment manufacture to installation precision is mainly the influence of the machining accuracy. Equipment manufacturing quality of grain to the design requirements, the most direct impact on the installation precision, and most of the problems that cannot be the scene processing, so the equipment is very important for the quality inspection before delivery.2. The fitting precision of disintegration of equipment will directly affect the quality of equipment operation, including the relative motion between the moving parts, precision matching accuracy and quality of contact between the mating surface. Large equipment assembly at the scene, the relative motion between the moving parts including precisionlinear motion, circular motion precision accuracy and precision of transmission, such as a large gear hobbing machine installation if the end of the transmission chain out-of-tolerance turbine deputy for installation accuracy, produce operation error, will influence the machining precision of gear. Matching accuracy refers to the matching between the surface reaches the fit clearance or interference of proximity, will directly affect the nature of the. Contact quality refers to match the size of the contact area between the surface and the distribution of its main influence to match the size of the contact deformation between parts, thus affecting the stability of the nature and life, such as gear mesh.3. Equipment installation precision of benchmark including elevation difference, levelness, vertical degree, straightness, parallelism and so on, will directly affect the equipment between different parts of position precision and relative motion accuracy to each other. Such as double housing planer bedway straightness and parallelism between guide will effect the precision of the linear motion of the workbench.(5) measuring factorsMeasurement process including the objects, the unit of measurement, measurement methods and measurement precision four elements. The influence of measurement error on the equipment installation accuracy is mainly the detection precision of measuring instruments, the machining precision of detection benchmark, installation benchmark actual deviation, the rationality of the testing method and testing personnel skill levels.1. The main shape error, the detection method of the position error and error evaluation。