SCRAPER CONVEYOR STRUCTURE …
In this article, the welded scraper used in a side-double-chain scraper conveyor in a mine is taken as the research object, and the reasons why scraper is d optimization is …
In this article, the welded scraper used in a side-double-chain scraper conveyor in a mine is taken as the research object, and the reasons why scraper is d optimization is …
1.1.2. Defining Material. 45 steel is used for the scraper head, press buckle and middle part, the mass density of the material is 7.89 103 kg/m3, Young's modulus is 2.09 1011 N/m2, Poisson's ratio is 0.269, yield strength is 3.55 108 N/m2, tensile strength is 6.0 108 N/m2, the specific heat is 524 J/(kg K). 684 Fig. 1. Field observations of the physical map.
To correct the tracking errors, remove the affected splice and re-splice that section of the belt. Readjust the idlers of the pulleys in the affected area and ensure they're providing enough tension to the belt. Remove the accumulation and set in place a plan for improved/regular maintenance to keep the system running smoothly.
T2 blades are primary scraper blades and made of polyurethane. They have a large wear area and can be used on new, worn or damaged belts. DYNA Engineering has engineered a carbide tip for our polyurethane T blades. These tips are great for adding extra service life and are perfect if you are choosing to install T blades onto a new conveyor belt ...
3. 4. 5. Bulk handling. Scraper Conveyors. A scraper conveyor is a type of flight conveyor. It consists of a trough in which a continuous driven chain with flights is running. The flights are scraping the material over the …
The scraper conveyor is the key conveying equipment for fully mechanized coal mining. Wear failure of the chute is the main form of failure of the scraper conveyor. In this study, the discrete ...
The wear of scraper conveyor chute causes both significant economic and environmental losses by shortening the service life. The life of the chute under coal abrasive wear situations is primarily decided by operating conditions and the materials properties. The comprehensive analysis of the influence factors had not been studied before. In this …
the scraper conveyor's head and tail sprockets have different degrees of speed difference under various working condi-tions. This work proposes a research and monitoring method
The belt scraper design comes in two forms – primary and secondary. Primary Conveyor Belt Cleaners — Clean the Conveyor belts at the head pulley eliminating problems with carryback spillage. Secondary Conveyor Belt Cleaners — Installed where the belt leaves the discharge pulley on the return side. They remove any residue left by the ...
Vibration signal is often used in traditional gear fault diagnosis techniques. However, the working face of the scraper conveyor is narrow, harsh and easily explosive, so it is inconvenient to obtain vibration signals by installing sensors. Motor current signature analysis (MCSA) is a fault-diagnosis method without sensor installation, which is easier …
There are two main variations of flight conveyors ( scraper conveyors ): 1) Conveyors with raised flights where the flight bar's level is above the material level. These conveyors work on purely dragging action of the chain to overcome the frictional drag between load and trough during conveyance. 2) Conveyors with submerged profile flights.
Scraper conveyors are mainly used to transport coal from the coal face under the coal mine, ash, chips, bark, pallet and many more. It is a type of flight conveyor, that consists …
by： Conveyor . The working principle of the scraper conveyor is to use the open chute as a bearing part for coal, gangue or materials, and fix the scraper on the chain as a traction member. When the driving part of the machine head starts, the sprocket on the driving head shaft rotates, so that the scraper chain circulates and ...
Open Access. Peer-reviewed. Research Article. Impact damage to the middle trough of a scraper conveyor based on the engineering discrete element method and orthogonal matrix analysis. …
The scraper conveyor is the unique transport equipment in coal mining face. Its chain drive system is the core subsystem. The dynamic characteristics of the chain drive system need monitoring for ...
A scraper conveyor is important in coal mining. During operation, its working performance is affected by chain speed fluctuations, terrain fluctuations, and load changes.
Abstract: For the coal mine underground coal mining working face scraper conveyor usually work starts with load, in order to get the accurate dynamic scraper conveyor …
Aiming at the problem of serious shutdowns of conveyors caused by abnormal coal flow of scraper conveyors, a coal flow monitoring method based on speckle structured light is proposed. The point cloud data of the coal body on the scraper conveyor is collected through the speckle structured light acquisition system. Then, the proposed …
The trough/drag chain conveyor is a conveying device that continuously conveys powder, granules, small pieces, and other loose materials in a closed casing by means of a moving scraper chain. Because the scraper chain is embedded in the material being conveyed, it is called the trough/dray chain conveyor.
The machines involved in a fully mechanized coal mining face are hydraulic support, shearer, and scraper conveyor (Xie et al. 2017).When the working face is operational the shearer takes the scraper conveyor as the running track, cuts the coal back and forth along the coal wall, cuts the coal off the coal wall, and loads the falling coal into …
A scrap-conveyor is a piece of important transportation equipment in a fully mechanized mining face. Its load varies with the change in mining technology and mechanical properties of the coal rock. 1–3 The change in the load of the scraper conveyor affects the service life of the transmission parts of the scraper conveyor. The gear fault …
The invention relates to a scraper (10) for scraper chain conveyors, with a top web (12) on which a chain-connecting region (13) for joining the scraper (10) to a scraper chain is formed, and with scraper wings for guiding the scraper on side profiles and on the base of a scraper chain conveyor. In order to provide scrapers which can be used to achieve a …
1 Introduction. A scraper conveyor is widely used as the transport equipment for a working face [1, 2].The performances of the scrapers and chains, which constitute the core of a scraper conveyor, have important implications for the quality of a scraper conveyor [], and an excessively high or low tension of the chain could cause a …
Submerged Scraper Conveyors (SSC) are generally used for ash removal below the coal fired boilers of large power plants. They generally use a two-chain conveying system, …
Submerged Scraper Conveyors (SSC) are generally used for ash removal below the coal fired boilers of large power plants. They generally use a two-chain conveying system, with a driving station using sprockets (toothed or pocket wheel type) and the chain guided by intermediate and reverse wheels following the path required for conveying the bulk ...
A test platform for the three-dimensional bending of the scraper conveyor is set up. The measuring effect of perceived and actual shape at the straight and bending states of the scraper conveyor ...
A scraper conveyor is important in coal mining. During operation, its working performance is affected by chain speed fluctuations, terrain fluctuations, and load changes. Thus, evaluating the ...
conditions of the scraper conveyor chain transmission system and thus obtained the variation rules of torque, contact force, and scraper chain tension under various workingconditions.However,thespeedandaccelerationof sprockets and scraper chains under abnormal working conditions were not analyzed. e simulation was not
The scraper conveyor is composed of rigid linepan sections, so the centerlines of each linepan reflect the shape of the scraper conveyor. ... The grating string embedded in the FBG curvature ...
Our forged scraper chain is an ideal conveyor chain for use in embedded scraper conveyors. Additionally, it has also found a wide range of applications in industries such as grain processing, mining machinery, steelmaking, and power generation. Forged scraper chainis comprised of the scraper-integrated link plates, or the combination of …