Rotary drilling rig rental: Rotary drilling rig is a kind of construction machinery suitable for construction engineering hole-forming operations. Widely used in municipal construction, roads and bridges, high-rise buildings and other basic construction projects., Suitable for dry (short spiral) or wet (rotary bucket) and rock formation (core drilling) drilling operations using different drilling tools. Rotary drilling rig has the characteristics of large installed power, large output torque, large axial pressure, flexible, high construction efficiency and multi-function. Rotary drilling rig adapts to the soil geological conditions in most areas of China, has a wide range of applications, and can basically meet the needs of bridge construction, high-rise building foundation and other projects. At present, rotary drilling rig has been widely used in various bored pile projects. Therefore, it is of great significance to discuss the construction preparation of rotary drilling rig and the common water construction technology from the technical point of view.

1. Rotary Drilling Rig Rental Construction Preparation

1. Rotary drilling rig rental data preparation

(1) On-site engineering geological data and necessary hydrogeological data, pile foundation construction drawings and drawing review minutes shall be prepared before construction.

(2) Survey data of underground pipelines (pipelines, cables), underground structures, dangerous buildings and precision instrument workshops in the site and adjacent areas.

(3) The technical performance data of the main construction machinery and its supporting equipment, the inspection and mix ratio test of the required materials, and the physical performance test of the required materials. According to the raw materials used, a qualified laboratory is entrusted to carry out the mix ratio test of commercial concrete.

(4) There are effective pile foundation engineering construction organization design or construction plan, load and construction process test reference materials.

(5) Drawing review

Make detailed safety technical disclosure, give full play to the democracy before construction, mobilize the enthusiasm and creativity of employees, let all employees involved in the construction participate in the discussion of the construction plan, improve the importance of safety production quality assurance, and assess all departments.

2. Rotary drilling rig rental construction machinery and equipment

The measuring instruments used, such as total station, theodolite, level, steel tape measure, rotary drilling rig, electric welding machine and other mechanical equipment must have factory certificate.

3. Requirements for renting small and medium-sized machines and tools of rotary drilling rig

(1) Mixer

The fuselage is installed firmly and stably, and a rain-proof operating shed is set; various clutches, brakes, wire ropes and protective covers must be safe, reliable and effective; hands should hold relevant certificates; there must be good separate grounding.

(2) Hand-held electric tools

Rotary drilling rig rental: the leakage protector must be installed separately; the protective cover is safe and effective; the shell must be grounded or grounded; damage to the rubber wire is not allowed.

(3) Electric welding machine

Have reliable rainproof measures; Good grounding or zero connection protection; A complete protective cover shall be provided at the connection between the primary line and the secondary line; The nose shall be used in the second line; The wiring is not allowed to be laid and pulled randomly, and the welding grip shall be well insulated. Welders shall be certified to work.

(4) Cylinder

Rental of rotary drilling rig: all kinds of gas cylinders have obvious color code and anti-vibration ring, and are not allowed to be exposed in the open air; The distance between acetylene gas and oxygen cylinder should be greater than 5m; When using acetylene cylinder, a backfire preventer must be equipped; The pipe shall be fixed with chuck; The operator must hold a certificate.