CN210418022U

CN210418022U - Positive and negative two-way operation scraper chain

Info

Publication number: CN210418022U
Application number: CN201920783265.1U
Authority: CN
Inventors: 田颖; 何相奎; 龚学林
Original assignee: Hubei Yidu Yiyun Mec&elec Engineering Co ltd
Current assignee: Hubei Yidu Yiyun Mec&elec Engineering Co ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-04-28
Anticipated expiration: 2029-05-28

Abstract

A scraper chain capable of running in both forward and reverse directions comprises chain rods, chain plates, pin shafts and scrapers; the chain rod comprises a rod body, the two ends of the rod body are symmetrically provided with a cylindrical head with a hole, and the rod body and the cylindrical head with the hole form a dumbbell-shaped structure with thick two ends and thin middle part; the adjacent chain rods are connected through chain plates and pin shafts on two sides. The utility model provides a pair of positive and negative two-way operation scraper chain has characteristics such as wearability is good, the transmission is steady, small in noise, load strength is high, long service life.

Description

Positive and negative two-way operation scraper chain

Technical Field

The utility model relates to a scraper chain, especially a positive and negative two-way operation scraper chain.

Background

The scraper chain is used as a main part of a scraper conveyor and widely applied to industries such as electric power, chemical industry, metallurgy, papermaking, grain and oil, ports, mines and the like. The most direct scheme for realizing the function is that the scraper chain has the capability of positive and negative bidirectional reliable and long-life operation.

In addition, after the conventional one-way operation scraper conveyor chain is worn, the whole scraper conveyor chain can be directly turned around to continue to operate.

At present, a scraper conveyor capable of realizing forward and reverse bidirectional operation generally adopts die forging easily-detached chains and sleeve roller chains to manufacture scraper chains.

The die forging easily-disassembled chain consists of an inner ring, an outer ring and a pin shaft, and because the wall thicknesses of the two end parts of the inner ring and the outer ring are thin, the die forging easily-disassembled chain rubs the pin shaft for a long time under the condition of heavy load, the wear resistance is poor, and the service life of the chain is shortened; meanwhile, the contact parts of the long holes of the inner ring and the outer ring and the pin shaft adopt an inclined wall structure, the contact area is small, the transmission stability is poor, the transmission noise is large, the strength and the load strength of the chain are low, and the chain is not suitable for severe working conditions.

The sleeve roller chain consists of an outer chain link, an inner chain link, a roller, a pin shaft, a sleeve and other components. In the daily operation process, under the repeated action of the loose-edge tension and the tight-edge tension, after a certain number of cycles, fatigue damage can occur; the inner and outer chain plates are generally stamping parts, and are contacted and rubbed with materials, so that the outer side of the outer chain link is easily abraded. The chain and the head and tail wheel are engaged with each other, the impact force is borne by the roller and the sleeve firstly, and after repeated impact for a certain number of cycles, the roller and the sleeve can cause impact fatigue damage. Under the working condition of severe environment, the hinge is easy to wear, and chain jumping or chain dropping is easy to cause after the pitch is increased.

Disclosure of Invention

The utility model aims to solve the technical problem that a positive and negative two-way operation scraper chain is provided, anti-two-way operation, use reliable, longe-lived.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a scraper chain capable of running in both forward and reverse directions comprises chain rods, chain plates, pin shafts and scrapers; the chain rod comprises a rod body, the two ends of the rod body are symmetrically provided with a cylindrical head with a hole, and the rod body and the cylindrical head with the hole form a dumbbell-shaped structure with thick two ends and thin middle part; the adjacent chain rods are connected through chain plates and pin shafts on two sides.

The scraper chain adopts 40Cr or 20 CrMnTi.

The chain rod and the chain plate are both formed by integral die forging.

The utility model relates to a positive and negative two-way operation scraper chain has following technological effect:

1) the chain rod and the chain plate are in arc shapes with two symmetrical ends, so that the forging process is simplified; the fork opening of the large end of the traditional fork-shaped die forging chain rod is eliminated, the pin shaft, the clamping ring and other parts can be used universally, the manufacturing process is simplified, the processing cost is reduced, and the material loss is reduced.

2) Increase chain pole tip R arc and drive teeth of a cogwheel R arc area of contact, effectively promote chain operation stationarity, reduce the noise.

3) Chain pole and link joint adopt die forging shaping, whole heat treatment, and for the plate link chain of same material, same cross-section, intensity is high a lot, and then effectively increases scraper chain's load strength, is suitable for multiple operating mode environment. In addition, the wear resistance and the comprehensive mechanical property are improved, and the service life is prolonged.

5) When the scraper conveyor needs to unload materials in the head direction and the tail direction, the scraper chain can be operated in the positive and negative directions; the conventional scraper conveyor running in one direction can turn the whole chain around for continuous use after the scraper chain is worn, so that the service life is prolonged by about 1 time, and the use cost is reduced. Here, it is explained that: the positive and negative direction operation is through body of rod both ends symmetry be equipped with foraminiferous cylinder head, both ends all can mesh with the sprocket, do not have the directionality regulation. Other chains such as bush roller chains can also run in the forward and reverse directions, and the invention is that the die forging chain running is directionally specified relative to the die forging chain, for example, the fork die forging chain requires that a small end is in front of the chain and a large end is behind the chain.

6) The chain and the scraper attachment are diversified in combination form, a suitable scraper chain type can be selected according to different working conditions, the single-row chain and the double-row chain are applicable, and the disassembly and the maintenance are convenient.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a front view of the middle chain bar of the present invention.

Fig. 2 is a top view of the middle chain bar of the present invention.

Fig. 3 is a front view of the middle link plate of the present invention.

Fig. 4 is a top view of the middle link plate of the present invention.

FIG. 5 is a front cross-sectional view of the double-row chain.

FIG. 6 is a top view of a double row chain.

FIG. 7 is a front view of a single row chain.

FIG. 8 is a top view of a single row chain.

In the figure: the chain scraper comprises a chain rod 1, a cylindrical head with holes 1-2, a rod body 1-1, a chain plate 2, a pin shaft 3, a scraper 4, a clamping ring 5 and a bucket scraper 6.

Detailed Description

As shown in fig. 1-8, a scraper chain capable of bidirectional operation comprises a chain rod 1, a chain plate 2, a pin shaft 3 and a scraper 4.

The chain rod 1 comprises a rod body 1-1, two ends of the rod body 1-1 are symmetrically provided with a cylindrical head 1-2 with holes, and the cylindrical head 1-2 with holes and the rod body 1-1 are in smooth transition and form a whole. The whole bar body is thickened relative to a common die forging chain bar, and finally a dumbbell shape with thick ends and thin middle is formed. This structure multiplicable chain pole tip R arc (outer cylinder arc surface) and drive teeth of a cogwheel R arc (drive teeth of a cogwheel inner arc surface) area of contact (R arc is outer cylinder arc surface of chain pole, chain wheel or head pulley inner arc surface, and two arc surfaces of during operation contact also called meshing), effectively promote chain operation stationarity, reduce the noise. Compared with the fork-shaped chain rod, the fork opening of the fork-shaped chain rod is cancelled and the fork opening is replaced by the arc-shaped structure with two symmetrical ends, so that the manufacturing process is simplified, the material loss is reduced, the manufacturing cost is reduced, and meanwhile, the two ends of the chain rod are not divided into a large end and a small end, and are not influenced by the positive direction and the negative direction during assembly. When the scraper conveyor needs to unload materials in the head direction and the tail direction, the scraper chain can be operated in the positive and negative directions; the conventional scraper conveyor running in one direction can turn the whole chain around for continuous use after the scraper chain is worn, so that the service life is prolonged by about 1 time, and the use cost is reduced.

The chain plate 2 is arc-shaped with two symmetrical ends, has high strength and can be conveniently welded with different accessories. The integral die forging of the chain plate 2 can also be integrally punch-formed and integrally heat-treated. Because both ends of the chain plate 2 are of symmetrical structures, the installation direction is not limited.

The chain rod 1 and the chain rod 1 are connected into a chain through chain plates 2 arranged on two sides and a pin shaft 3 and a clamping ring 5.

The chain parts can be made of materials with good processing performance such as 40Cr, 20CrMnTi and the like, and are subjected to quenching, tempering and carburizing treatment. Has the characteristics of higher surface wear resistance, excellent comprehensive mechanical property, wear resistance, light weight, high strength and long service life.

The combination form of the chain and the scraper 4 can be diversified, and the proper scraper chain style is selected according to different working conditions, so that the single-row chain and the double-row chain are applicable.

In addition, aiming at the double-row chain, 3-4 bucket scraping plates 6 can be arranged on the chain, and the bucket scraping plates 6 can clean the residual materials on the bottom plate along the belt in the scraping process of the scraping plates 4. The bucket scraper 6 is fixed through bolt connection, and the bucket scraper 6 can be disassembled and reversed when the bucket scraper needs to be reversed.

In addition, to the double-row chain, the scraper 4 can adopt an inclined scraper, adopts a straight plate and inclines, is convenient to be quickly inserted into the material to be conveyed, and can prevent floating chains.

Claims

1. The utility model provides a positive and negative two-way operation scraper chain which characterized in that: comprises a chain rod (1), a chain plate (2), a pin shaft (3) and a scraping plate (4); the chain rod (1) comprises a rod body (1-1), two ends of the rod body (1-1) are symmetrically provided with a cylindrical head (1-2) with a hole, and the rod body (1-1) and the cylindrical head (1-2) with the hole form a dumbbell-shaped structure with thick two ends and thin middle part; the adjacent chain rods (1) are connected through chain plates (2) on two sides and a pin shaft (3).

2. The chain scraper of claim 1, wherein: the scraper chain adopts 40Cr or 20 CrMnTi.

3. The chain scraper of claim 1, wherein: the chain rod (1) and the chain plate (2) are formed by integral die forging.