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The small-sized drilling rig such as XY-100 is widely used in survey engineering. With the development of underpinning technique, more and more micro-pile should be drill near buildings and structures. The higher rig shelf should be upgraded for suit with limited space. The excavation of deep foundation...

There are lots of advantages using linear motor in high speed direct feed drive system. Nevertheless the control system of linear motor is easily being disturbed because of the distinctive structure. To improve the response characteristics of linear motor feed drive system, this paper proposes a regression...

This paper mainly researches the combination of scaffolding instruction and flipped classroom model, discuss its applicability. Through the methods of literature review, investigation and practice, this paper analysis the scaffolding instruction theory and flip classroom teaching method systematically...

In this paper, a soil cutting test rig was developed equipping with two force sensors and a displacement sensor. The equipment could perform measurements continuously at various cutting speeds when the cutting tools worked in the soils. The cutting tool is a rectangle blade. It can moves horizontally...

In this paper, reducer test bed is structured into two categories from the working principle, open power flow test bed and closed power flow test bed. Analysis of the constituent elements of the gear unit test rig, described the current development situation reducer test bed, summarizes the development...

Rotation speed difference domain (RSDD) frequency spectrum and RSDD envelop spectrum are presented for sake of detecting intershaft bearing with local defect. The methods are used to analyze vibration signal measured from intershaft bearing test rig. Results of the theoretical analysis show that, positions...

Solar photovoltaic (PV) systems operate during long time periods and produce a vast number of data. Traditional data collection employs a manual method with conventional instruments such as multimeters and thermocouples, which is a time-consuming process. Automatic-sensor based data acquisition (DAQ)...

To accurately diagnose the mechanical failure of fan, the method based on the symmetrized dot pattern (SDP) analysis and improved Back Propagation (BP) neural network is proposed. Vibration signals acquisition of 13 kinds of running states were achieved on the 4-73 No.8D centrifugal fan test rig and...

The paper proposed a control method based on the electro-hydraulic servo loading system used on the bearing test rig for aircraft engine. Aiming at the nonlinear problem of the system, a control method is designed based on RBF neural network. This method uses the BRF algorithm of neural network on the...

The mechanical model of mast of special rotary drilling rig for transmission line is established in this paper. The ultimate loads of mast of rotary drilling rig are designed for drilling condition and lifting drill condition, and the simulation of the mast is done under these typical working conditions....

In order to investigate the cage slip ratio, the dynamic differential equations of high-speed cylindrical roller bearing were built and solved by GSTIFF (Gear Stiff) integer algorithm. Cage slip ratio in hybrid ceramic cylindrical roller bearing and steel cylindrical roller bearing has been studied,...

As a kind of design technique, industrial moulding design has been applying in all kinds of production design, especial the new products. Taking the ZDY Directional Drilling Rigs as a example, the paper gives a detailed description of application and research of industrial moulding design in developing...

Multi-axial fretting fatigue wear mechanisms of steel wires of hoisting rope and the protection design were explored in the present study. Multi-axial tension-torsion fretting fatigue behaviours of steel wires were investigated employing the self-made test rig. In order to quantitatively explore wear...

Tunnel exploration is a kind of method with high efficiency and economy, but special tunnel exploration drilling rigs are scarce. ZDY1900S type all hydraulic tunnel drilling rig is a kind of equipment designed for tunnel exploration, also can be used to drill gas drainage holes, water exploration holes...

Combining virtual reality technology into the design process of drilling rig, the virtual reality system of drilling rig design is realized by using industrial model data import, physical engine technology, 3D engine principle, light processing technology, non-programming production design, and resource...

ABB Drives is a highly technical product which has been widely used in metallurgical, mining, windmill farm, building automation, drilling rig and oilfield. This also presents many characteristics such as large number of servicing points plus a wide geographic spread. Since most of them are located at...

Aiming at the problems existing in the bolt drilling rig, an intelligent visualization scheme based on PLC, interface and frequency converter was used to reform the control system of a certain type of bolt rig. Through analyzing the control principle of the system, the PLC terminal wiring diagram is...

Drilling industry operates under low-voltage power network, causes large number of reactive power loss, and seriously affects the power system voltage stability. This paper introduces the application of Static Var Generator (SVG) reactive power compensation in the low-voltage drilling power network using...

In this article physical and chemical testing index and filtration effect index are explained in detail. Tested the filtration effect of the GLASS filter media PPS media METAMAX and FMS filter media by use of German AFC-131 filter media test rig. And Then tested their breaking strength permeability temperature...

Hai Yang Shi You 981 (HYSY981) is a 6th generation deep water Semi-submersible rig and the first DP3 drilling rig in China. To ensure safety operation of the rig, dynamic positioning capability analysis was performed on HYSY981. Firstly, the model of marine environment including wind, wave and current...

Structures and dynamics of planetary gears are very different from fixed axis gears. Special attentions to fault diagnostics of planetary gear system need to be carefully studied. In this paper, a distinctive nature of damage induced vibration of planetary gear box, namely tidal frequency, considering...

The deformation control of surrounding rocks is one of the key problems in deep mining, especially floor heave control. In view of coal mine disaster caused by roadway surrounding rock under complex geological conditions, the lack of special mechanical control technology and equipment, the construction...

Gear shafts of drill rigs in case of holes drilling in coal mines work in complex aperiodical loading conditions. One way to reduce metal consumption of gear shafts is to use the combined strengthening technology on the basis of plastic deformation of the surface (PDS) method. FEM modeling of plastic...

Rich burn - Quick quench - Lean burn (RQL) combustion technology is one of the most promising low emission combustion technologies for aeroengines. During the whole process of RQL, rapid and effective mixing in the quenching zone is critical for its key role of bridging rich burn and lean burn processes....

Energy storage methods will be a critical part of the future energy supply system, as demand is increased by electrification of domestic heat and take-up of renewable generation increases the variability of supply. Domestic storage units are likely to be key to this transition, and this paper will present...

This paper presents a fast method to evaluate the accuracy of a calibration method of a stereovision rig built with commercially available cameras. The method allows by retro projection to quantify very precisely errors in terms of depth reconstruction. The proposed method has been evaluated on the depth...

In order to improve the reliability of the coal mine tunnel drilling rig in the absence relevant data at the primary design stage, the reliability fuzzy prediction model and the fuzzy comprehensive evaluation process was established based on the fuzzy theory in this paper. The reliability of hydraulic...

In order to investigate friction and wear characteristics of 30CrMnSi-LD10-CS friction pair, the friction and wear test rig was built to measure the friction torque and wear coefficient under low speed, and mathematical calculation was used to figure out the relationship between friction torque and wear...

The paper puts forward a new model of electric-loading test rig for testing remanufacture automatic transmission to meet the demands for testing different types of remanufactured automatic transmissions. The sub-systems, including electric & electronic control systems and the mechanical components, were...

In order to prevent the catastrophic accidents caused by the failure of the reducer, based on virtual technology such as CAD/CAE and Solidworks, the friction and vibration testing device of planetary gear reducer was designed, and the weak links of the transmission device were found out, its life and...

This paper introduces the working process and technical parameters of drive head on CBM vehicle drill rig in detail. With structural parameters as design variables, minimum volume as objective function and parameter and checking conditions of single gear transmission axis and gear as constraint conditions,...

In this work, the distilled biodiesel of waste cooking acids methyl esters (WCME) was blended with petroleum diesel as testing fuels (D100/DB2/DB5/DB20/DB100). The tribological performance of the biodiesel was evaluated using a reciprocating cylinder-on-flat wear test rig (Cameron-Plint TE-77) at various...

In order to reduce the occurrence of miner burnout, a game model of miners and coal mine strategy selection was constructed from the perspective of bounded rationality. In-depth analysis of the key influencing factors in the choice of mining rig and coal mining strategy. It is found that there are 4...

In present scenario, online monitoring and control of dynamic mechanical systems drives an attention of many researchers. Present paper explores design, development and fabrication of an Electrorheological fluid damper done in laboratory, which can be used as a semi-active variable damping device for...

Background: Turbulent flow downstream of atherosclerotic plaques produces low amplitude shear waves which travel through the chest and can be measured by skin sensors. This acoustic signature may provide a cheap non-invasive way to diagnose arterial disease. We report measurements of shearing oscillations...

Planetary gearboxes are mostly used in very hard working situations such as helicopters, wind turbines, heavy trucks, marine vehicle, hybrid cars etc. In order to understand the basic nature of planetary gearbox vibration, this paper includes a vibration and dynamic behavior of single stage planetary...

To increase the production of hydrocarbons Russia stepped on the shelf of the Arctic seas. The Arctic, as it is known, is characterized by severe climatic conditions, it can be attributed to the extremely long frosty winter, strong winds, six-month polar nights and ice on the surface of the sea all year...

A special-purpose testing device for bearing preload was developed. The relationship between preload and system natural frequency was researched with the test rig. The test data of bearing preload changing with system natural frequency was fitted. The results show that the preload test rig has reflected...

In order to resolve the resonance problem of jack-up riser with drill string, the frequency equation of natural transverse vibration with compressive axial load and the length of the riser above the seabed as independent variable was derived in this paper. Then the frequency equation was solved by the...

This journal will describe how the kick handling time is reduced from the actual condition by applying Drillers The method in Well X. This well is an exploration well with the main objective at the 9,000 ft range of depth in Kujung Formation, which has been identified as a gas hydrocarbon reservoir zone....

It is suggested that the teaching reform in the OBE model can be carried out on the course of Exploration Engineering in accordance with the current market demand for drilling rig construction, involving the following aspects: 1) the courses are limited to some certain ones, and 48 class hours are determined....

Based on the contact characteristics of helical surfaces and the coexistence of rolling and sliding at the screw-roller interface, a forecast model of the thread pair using Archard wear theory is proposed. To obtain the wear depth and the wear volume of the screw raceway in the whole effective stroke,...

Currently, ARINC429 data buses are widely applied in commercial aircrafts for connecting avionic systems architecture and devices. The author does the research of collecting the avionics ARINC429 data and presents the method and suggestion.

The mathematical models of compressor, evaporator and condenser in a refrigerated container’s refrigeration unit were established, which were used to form the whole system model for steady-state simulation according to the coupling relationship among them. The full-load performance of the refrigeration...

In order to promote risk identification and prevention of raise boring rigs, an index system is constructed, and a risk assessment and classification method is proposed. By analysing the risk factors such as geology, equipment, environment and personnel, we constructed a work breakdown structure and...

Impact is universal phenomenon in mechanical system with clearance. In order to accurately describe the effect of impact between journal and bearing in clearance joint, an improved contact force model is presented in this work, which assumes the coefficient of restitution during impact is varied, and...

Energy in buildings in tropical regions such as Indonesia is dominated by air conditioning systems. With the high use of electrical energy from tourism accommodation, it will be difficult to develop because operational costs are high. Thus, the purpose of this research is to obtain energy savings from...

During the process of drilling, the drill bit makes direct contact with the engineering rock mass, and the feedback from the drill bit effectively represents the mechanical properties of the rock mass. Digital drilling technology allows for the real-time monitoring of key parameters such as rotational...

The global structural analysis for the mat-supported jack-up rig is always of the first priority since it determines the global behaviour of the platform. Different from the traditional 3-leg or 4-leg jack-up rigs, the mat-supported jack-up rig is sitting on the seabed floor instead of deeply penetrating...

On April 20, 2010, British Petroleum’s Deepwater Horizon drilling rig in the Gulf of Mexico exploded, creating the largest oil spill in U.S. history. Analysis of 1,161 BP tweets during the crisis response reflected unexpected reputation repair strategies and responsibility attribution. Situational Crisis...