UA4898U - Frame of flight conveyor - Google Patents

Abstract

The frame of flight conveyor includes shaped side pieces and bottom, on upper surface of which the wear-resistant elements in longitudinal rows are located. Wear-resistant elements of bottom are made in the form of strips for entire length of bottom, and on the internal surfaces of vertical walls and lower shelves of shaped side pieces the wear-resistant longitudinal strips for entire length of side pieces are also made.

Description

The utility model refers to mining engineering and can be used in scraper conveyors.

The well-known grate of the scraper conveyor, which includes shaped sidewalls and a bottom with protective strips placed on the end surface, limited by the inner and outer transverse contours of the grate (A.S.

Me615004, cl. B652:319/28, publ. 15.07.1976).

The known grate has low reliability due to the increased wear of the bottom and inner surfaces of the sidewalls, since the protective strips are made only on their end surfaces.

The closest analogue of the claimed useful model is a grate of a scraper conveyor, which includes shaped side walls and a bottom for placing on it a traction chain with scrapers fixed on it, which is made with longitudinal rows of local wear-resistant elements that have the form of truncated cones, placed on large bases up and located in each longitudinal row with an offset of half a step relative to the local wear-resistant elements of the adjacent longitudinal row and with steps between them, the sum of which is a multiple of the pitch of the traction chain and the distance between the scrapers, while the bottom is equipped with additional local wear-resistant elements in the form of truncated cones, placed with large bases down and located in each longitudinal row between other local wear-resistant elements (A.S. USSR

Me1546362, class B652:319/28, publ. 28.02.1990).

The features of the well-known useful model, which coincide with the essential features of the proposed grate scraper conveyor: shaped sidewalls and the bottom, on the upper surface of which there are longitudinal rows of wear-resistant elements.

The known useful model does not provide the necessary technical result for the following reasons.

During the operation of the scraper conveyor, bending occurs in the horizontal plane of its grating joint, which consists of individual hinged gratings. At the same time, as a result of the sliding of the elements of the traction body along the bottom and sidewalls of the rishtak, their intensive wear occurs, and some increase in the wear resistance of the bottom of the rishtak by local wear-resistant (3C) elements does not ensure its high durability, especially when transporting abrasive materials. This is due to the fact that the execution of longitudinal rows of local wear-resistant elements in the form of truncated cones, located with large bases down and up during the movement of the scraper along the bottom of the scraper, leads to uneven wear of the bottom and local ZS elements due to the discontinuity of the contact of friction elements with ZS elements. At the same time, less

The ZS bottom is subject to greater wear, local ZS elements can chip, leading to wear of the lower surface of the scraper in contact with the ZS elements, and the contact of the traction body elements with the inner surfaces of the shaped sidewalls during distortions caused by uneven wear of the bottom leads to intensive wear of the sidewalls. All this leads to high wear of the blade and low durability of the blade condition as a whole.

The useful model is based on the task of improving the scraper conveyor scraper, in which, due to the change in the shape of the ZS elements and their optimal location, the continuity of the contact of the friction elements with the ZS elements is ensured, which allows to reduce the wear of the scraper and increase the durability of the scraper condition as a whole.

The task is solved by the fact that in the grate of the scraper conveyor, which includes shaped sidewalls and a bottom, on the upper surface of which there are longitudinal rows of wear-resistant elements, according to a useful model, the wear-resistant elements of the bottom are made in the form of staffs along the entire length of the bottom, and on the inner surfaces of vertical walls and the lower shelves of the shaped sidewalls are also made of wear-resistant longitudinal staffs for the entire length of the sidewalls.

Appropriate implementation of the headquarters by surfacing.

Expedient implementation of the bottom headquarters in number and width with the possibility of covering its entire surface.

Figure 1 shows a cross-section of the scraper conveyor belt; Fig. 2 is a top view of the rib; on

Fig. 3 - section AA in Fig. 2.

The grating of the scraper conveyor contains two shaped sidewalls 1, connected by means of a bottom 2. On the upper surface of the bottom 2, there are longitudinal rows of ZS elements in the form of staffs 3, which are made by welding over the entire length of the bottom 2. On the inner surfaces of the vertical walls 4 and lower shelves 5 shaped sidewalls 1 are located ZS longitudinal staffs 6, made by welding on the entire length of the sidewalls 1. Staffs from the bottom 2 can be made in number and width with the possibility of covering its entire surface. The traction chain 7 and the scrapers 8 connected to it are placed on the bottom 2 of the scraper.

During the operation of the scraper conveyor, the transported material, for example, rock mass from the excavation unit, is fed to the scraper bed, which consists of separate hinged scrapers.

Scrapers 8, which are connected by a traction chain 7, grab the rock mass and move it along the bottom 2 with wear-resistant staffs 3 made on it. Execution of ZS staffs With longitudinal rows along the entire length of the bottom stabilizes the movement of the scraper 8 relative to the bottom 2 of the scraper, because the scraper slides along ZS staffs 3, which additionally act as guides, reducing the wear of the bottom.

Since the scraper 8 in the process of operation is subject to wear in the places of contact with ZS staffs Z and more closely adheres to the bottom 2, at the same time its lateral vibration decreases, which favorably affects the reduction of wear of the shaped sidewalls 1. The movement of the scraper 8 along the ZS staffs 6 of the lower part of the sidewalls 1 also reduces their wear, and the reduction of the vibration of the scraper 8 and the execution on the inner surfaces of the vertical walls 4 and lower shelves 5 of the longitudinal ZS staffs 6 prevents the formation of burrs and contributes to the uniform movement of the scraper 8. The remains of crushed rock mass located in the spaces between the ZS staffs Z the role of partial lubrication, which prevents wear of the bottom of the scraper 2, and when moving large pieces of rock mass, they prevent them from cutting into the softer layers of the bottom and thus contribute to a more even movement of the scrapers 8.

The advantages of such a device also consist in the fact that during the restoration of the bottom and sidewalls, the coating of ZS strips is carried out in places of maximum wear of the bottom, between the already existing ZS headquarters, thereby increasing the total surface area of ZS and reducing the cost of manufacturing new ones.

ZS staffs on the sides and bottom are placed in places of direct contact with the traction body, and the area covered by the bottom staffs increases in proportion to the abrasiveness of the transported material, up to full coverage.

Thus, the execution of ZS staffs on the bottom and inner surfaces of the sidewalls ensures the continuity of the contact of friction elements with ZS elements, which allows to reduce the wear of the grating and increase the durability of the grating condition as a whole.

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Claims (2)

1. The grate of the scraper conveyor, which includes shaped side walls and a bottom, on the upper surface of which wear-resistant elements are located in longitudinal rows, which is distinguished by the fact that the wear-resistant elements of the bottom are made in the form of a staff along the entire length of the bottom, and on the inner surfaces of the vertical walls and lower shelves, shaped the sidewalls are also made of wear-resistant longitudinal staffs along the entire length of the sidewalls. 2. The grid according to claim 1, which differs in that the staffs are made by surfacing. Z. The grid according to claim 1, which differs in that the bottom staffs are made in number and width with the possibility of covering its entire surface.