Three-chain scraper chain for conveyor

Abstract

The utility model relates to the technical field of coal mine underground fully mechanized coal mining face conveyors, in particular to a three-chain scraper chain for a conveyor. The utility model patent with the application number of CN202310145841.0 discloses a three-chain transmission system based on the ultra-large transportation volume, and the problems that a three-chain scraper chain is poor in stress uniformity of three chains, poor in S-bend adapting operation and the like exist in the three-chain scraper chain. The three-chain scraper chain for the conveyor is composed of the scrapers, the U-shaped bolts, the nuts, the left chain, the middle chain and the right chain, one scraper is fixed to the left chain and the middle chain through the U-shaped bolts, and the other scraper is fixed to the middle chain and the right chain through the U-shaped bolts at the interval of n rings, that is, each scraper is fixed to the two chains. And different scrapers are crossly arranged left and right. By means of the arrangement mode, the stress uniformity of the three chains is greatly improved, meanwhile, the adaptability of S-bend operation of the conveyor is improved, and high application and popularization value is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to scraper conveyor design technical field, concretely is a kind of three chain scraper chain for conveyor. BACKGROUND

[0002] Scraper conveyor is widely used in coal mining industry, undertakes the transportation and transfer task of coal. The traditional scraper conveyor drive system is all by two chain transmission power, but in recent years, with the development of large-scale coal mining direction, it is necessary to increase the installed power of scraper conveyor and the groove width to increase the conveying capacity of conveyor to meet the mining needs of super large coal mine. However, due to the increase of installed power, the sprocket hole needs to transmit more power, which seriously affects the service life of sprocket hole; while the increase of groove width, the force arm of scraper is longer when it is scraped, which leads to frequent damage of scraper. At the same time, the increase of chain specification leads to the increase of overall height of conveyor, which affects the bottom amount of coal mining machine. These factors seriously restrict the development and construction of super large coal mine. In view of this problem, the invention patent with application number CN202310145841.0 discloses a three chain drive system and scraper conveyor based on super large conveying capacity, which uses three chain scraper chain for coal transportation, reduces the chain specification by increasing the number of chains, effectively reduces the height of conveyor and increases the bottom amount of coal mining machine. At the same time, the sprocket and scraper are changed from traditional two-point force to three-point force, which is more uniform, thereby prolonging the service life of scraper and sprocket. However, this three chain scraper chain has two problems, one is that three chains are fixed on one scraper, and the force of three chains is not uniform, even one chain is not stressed, which not only affects the service life of chain, but also affects the stress state of scraper; the other is that three chains are fixed on one scraper, and the chain distance of two chains on the side is large, which is not suitable for the operation of S bend of conveyor, and increases the running resistance. SUMMARY

[0003] Therefore, the utility model aims at providing a kind of three chain scraper chain for conveyor, which is composed of scraper, U-shaped bolt, nut, left chain, middle chain and right chain. One scraper is fixed on left chain and middle chain by U-shaped bolt, and another scraper is fixed on middle chain and right chain by U-shaped bolt every n ring. This arrangement forms different scrapers arranged alternately on left chain, middle chain and right chain. This arrangement greatly improves the uniformity of force of three chains, and improves the adaptability of S bend operation of conveyor, which has high popularization and application value.

[0004] The utility model adopts the technical scheme of a kind of three chain scraper chain for conveyor, which includes scraper 2, left chain 3, middle chain 4, right chain 5, U-shaped bolt 6 and nut 7. Different scrapers 2 are arranged alternately on left chain 3, middle chain 4, middle chain 4 and right chain 5 by two groups of U-shaped bolt 6 and four nuts 7 every n ring.

[0005] Further, the chain center distance L of the scraper 2 is half of the scraper length M, the chain center distance L is one third of the trough width H of the scraper conveyor 1, and each alternately arranged scraper 2 has one end close to the inner opening of the trough and the other end located on the center line N of the adjacent scraper.

[0006] The three-chain scraper chain for the conveyor has the advantages of ingenious design, simple and compact structure, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0007] Fig. 1 The utility model relates to a kind of three-chain scraper chain for conveyor, design is ingenious, structure is simple and compact, and each scraper is fixed on two chains, the arrangement of such greatly improves the stress uniformity of three chains, improves the efficiency of coal belt, simultaneously, improve the adaptability of conveyor S bend operation and the service life of scraper and chain, can effectively reduce equipment failure rate, improve mine extraction efficiency, help the development of super large coal mine.

[0008] Fig. 2 The utility model relates to a kind of three-chain scraper chain, design is ingenious, structure is simple and compact, and each scraper is fixed on two chains, the arrangement of such greatly improves the stress uniformity of three chains, improves the efficiency of coal belt, simultaneously, improve the adaptability of conveyor S bend operation and the service life of scraper and chain, can effectively reduce equipment failure rate, improve mine extraction efficiency, help the development of super large coal mine.

[0009] Figure: 1 scraper conveyor, 2 scraper, 3 left chain, 4 middle chain, 5 right chain, 6 U-shaped bolt, 7 nut, M scraper length, N scraper center line, L chain center distance, H trough width. DETAILED DESCRIPTION

[0010] The specific implementation of the utility model is described in detail as follows in combination with the drawings:

[0011] As shown in the drawing, Figs. 1-2 The utility model relates to a kind of three-chain scraper chain for conveyor, including scraper 2, left chain 3, middle chain 4, right chain 5, U-shaped bolt 6, nut 7;Different scraper 2 is fixed by two groups of U-shaped bolt 6 and four nuts 7 every N ring alternately arranged on left chain 3, middle chain 4 and middle chain 4, right chain 5.

[0012] In the embodiment, the chain center distance L of the scraper 2 is half of the scraper length M, the chain center distance L is one third of the trough width H of the scraper conveyor 1, and each alternately arranged scraper 2 has one end close to the inner opening of the trough and the other end located on the center line N of the adjacent scraper.

[0013] In this way, each scraper is alternately arranged on the three chains, and the beneficial effects are as follows: each scraper is fixed on two chains, which can maximize the stress uniformity and S-bend operation adaptability of the three chains, and one end of each scraper is located at the center line of the adjacent scraper, which can improve the running stability and coal belt efficiency of the three-chain scraper chain.

[0014] The detailed description of the technical scheme of the utility model by means of the preferred embodiments above is illustrative rather than formal limitation. Based on reading the utility model specification, the skilled in the art can modify the technical scheme recorded in the embodiments or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the range of the technical scheme of the utility model embodiments.

Claims

1. A three-chain scraper chain for a conveyor, characterized in that, Includes scraper (2), left chain (3), middle chain (4), right chain (5), U-bolt (6), and nut (7); different scrapers (2) are fixed on the left chain (3), middle chain (4) and right chain (5) alternately arranged every N rings by two sets of U-bolts (6) and four nuts (7).

2. The three-chain scraper chain for a conveyor according to claim 1, characterized in that, The chain center distance (L) of the scraper (2) is half of the scraper length (M), and the chain center distance (L) is one-third of the groove width (H) of the scraper conveyor (1). Each scraper (2) arranged alternately has one end adjacent to the groove opening and the other end located on the center line (N) of the adjacent scraper.

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