Wear-resistant middle trough for scraper conveyer

Abstract

The utility model relates to a wear-resistant middle trough for a scraper conveyer, which comprises a bottom plate and a middle plate, support plates are arranged on the upper end surfaces of the bottom plate and the middle plate, and a plurality of strip-shaped bulges extending along the conveying direction are arranged on the upper end surfaces of the support plates. When the scraper is used, the strip-shaped protrusions are arranged on the upper end faces of the middle plate and the bottom plate, raised grains are formed on the upper end faces of the bottom plate and the middle plate, so that double raised grains are formed on the middle groove, the strip-shaped protrusions are in contact with the scraper, and surface contact of the scraper is changed into line contact. The contact area between the scraper and the middle plate and the contact area between the scraper and the bottom plate are effectively reduced, friction resistance is reduced, operation power is reduced, meanwhile, the service life of the middle groove is prolonged, meanwhile, the connecting strength between the long-strip-shaped protrusions is enhanced through the arrangement of the supporting plate, and the service life of the middle groove is prolonged through connection between the supporting plate and the middle plate or the bottom plate. Therefore, the strip-shaped protrusions can be conveniently connected with the middle plate and the bottom plate.

Description

Technical Field

[0001] The utility model relates to the field of scraper conveyors, in particular to the technical field of middle troughs of scraper conveyors, and specifically refers to a wear-resistant middle trough for a scraper conveyor. Background Art

[0002] Scraper conveyors are commonly used conveying equipment in coal mines. They are not only used to transport coal and materials, but also serve as the running track for shearers. Therefore, they have become an indispensable main equipment in modern coal mining technology. Scraper conveyors use scraper chains to tow and achieve the conveyance of coal in the trough.

[0003] The working principle of a scraper conveyor is as follows: the open conveying trough in the middle is used as the bearing part for coal. Scrapers are fixed on the chain to form a scraper chain. After the head drive part is started, the sprocket on the head shaft rotates, causing the scraper chain to run cyclically and drive the coal to move along the conveying trough until it is unloaded at the head part.

[0004] The conveying trough of a scraper conveyor is composed of multiple middle troughs butt-jointed. The middle trough of a scraper conveyor mainly includes trough sides arranged on both sides and a middle plate and a bottom plate fixedly connected between them. The bottom plate is directly below the middle plate. Both the middle plate and the bottom plate play a role in carrying materials. The middle plate is in direct contact with the materials and the scrapers, and the bottom plate is in direct contact with the materials and the scrapers. This results in the most serious friction between the bottom plate and the middle plate. Therefore, in the prior art, the contact positions between the middle plate and the scrapers, and between the bottom plate and the scrapers are prone to wear, and the large contact area causes a large frictional force, thereby increasing the operating power and reducing the service life of the middle trough at the same time. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a wear-resistant middle trough for a scraper conveyor. Long strip protrusions are provided on the upper end surfaces of the middle plate and the bottom plate, so that the long strip protrusions are in contact with the scrapers, thereby changing the surface contact between the scrapers into line contact, effectively reducing the contact areas between the scrapers and the middle plate, and between the scrapers and the bottom plate, reducing the frictional resistance, thereby reducing the operating power and increasing the service life of the middle trough at the same time.

[0006] The utility model is realized through the following technical solutions. A wear-resistant middle trough for a scraper conveyor includes a bottom plate and a middle plate. Support plates are provided on the upper end surfaces of the bottom plate and the middle plate, and a number of long strip protrusions extending along the conveying direction are provided on the upper end surfaces of the support plates.

[0007] When the utility model is in use, long strip protrusions are arranged on the upper end faces of the middle plate and the bottom plate, so that wavy lines are formed on the upper end faces of the bottom plate and the middle plate, and thus double wavy lines are formed on the middle groove. The long strip protrusions are in contact with the scraper, so that the contact between the scraper and the middle plate and the contact between the scraper and the bottom plate are changed from surface contact to line contact, effectively reducing the contact area between the scraper and the middle plate and between the scraper and the bottom plate, reducing the frictional resistance, thereby reducing the operating power. At the same time, the service life of the middle groove is increased. Meanwhile, the setting of the support plate enhances the connection strength between the long strip protrusions. Through the connection between the support plate and the middle plate or the bottom plate, the connection between the long strip protrusions and the middle plate and the bottom plate is facilitated.

[0008] Preferably, there is a gap between two adjacent long strip protrusions, and the gap forms an anti-wear groove with the support plate as the bottom, and pulverized coal is arranged in the anti-wear groove.

[0009] In this preferred solution, by arranging pulverized coal in the anti-wear groove and making full use of the lubricating effect of the pulverized coal, the abrasion of coal and gangue on the middle plate and the scraper and between the scraper and the bottom plate is greatly reduced, the service life of the scraper conveyor is prolonged, and the operating power is reduced. At the same time, the setting of the gap increases the volume of the anti-wear groove, thereby increasing the amount of pulverized coal contained, so as to ensure sufficient accumulation of pulverized coal and ensure sufficient lubricating effect.

[0010] Preferably, the cross-section of the long strip protrusion in the width direction is an upward convex arc.

[0011] In this preferred solution, through the setting of the arc, the support strength of the long strip protrusion is enhanced.

[0012] Preferably, the front end face and the rear end face of the long strip protrusion are both inclined planes inclined towards the inner side of the middle groove. In this preferred solution, through the setting of the inclined plane, a guiding effect is given to the scraper.

[0013] Preferably, the width of the gap is adapted to the width of the long strip protrusion. This preferred solution facilitates the installation and setting of the protrusion on the support plate.

[0014] Preferably, several adjacent long strip protrusions form a protrusion group, and several protrusion groups are arranged in the width direction, and the distance between two adjacent protrusion groups is the same.

[0015] In this preferred solution, through the setting of the protrusion group, it is cooperated with the scraper in segments in the width direction to reduce waste.

[0016] Preferably, the first protrusion group includes two long strip protrusions, the second protrusion group includes eight long strip protrusions, the two second protrusion groups are located between the two first protrusion groups, and the two first protrusion groups are respectively located at the two side edges of the upper end face of the support plate.

[0017] In the setting of this preferred solution, in the width direction, a small amount of support is provided for the edge of the scraper, and the second protrusion group is used as the main support, so that the long strip protrusions are reasonably arranged and used.

[0018] The beneficial effects of the utility model are as follows: long strip protrusions are arranged on the upper end surfaces of the middle plate and the bottom plate, so that wavy lines are formed on the upper end surfaces of the bottom plate and the middle plate, and thus double wavy lines are formed on the middle groove. The long strip protrusions are in contact with the scraper, so that the surface contact between the scraper and the middle plate and the bottom plate is changed into line contact, effectively reducing the contact area between the scraper and the middle plate and between the scraper and the bottom plate, reducing the frictional resistance, thereby reducing the operating power, and at the same time increasing the service life of the middle groove. Meanwhile, the arrangement of the support plate enhances the connection strength between the long strip protrusions. Through the connection between the support plate and the middle plate or the bottom plate, the connection between the long strip protrusions and the middle plate and the bottom plate is facilitated; by arranging pulverized coal in the wear-reducing groove and making full use of the lubricating effect of the pulverized coal, the wear of coal and gangue on the middle plate and the scraper and between the scraper and the bottom plate is greatly reduced, the service life of the scraper conveyor is prolonged, and the operating power is reduced; meanwhile, the setting of the gap increases the volume of the wear-reducing groove, thereby increasing the amount of pulverized coal contained, ensuring sufficient accumulation of pulverized coal and ensuring sufficient lubricating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 is Figure 1 an enlarged schematic diagram at A in

[0021] Figure 3 is a front view of the structure of the utility model;

[0022] Figure 4 is Figure 3 an enlarged schematic diagram at B in

[0023] Figure 5 is Figure 4 an enlarged schematic diagram at C in

[0024] Figure 6 is a top view of the structure of the utility model;

[0025] Figure 7 is Figure 6 an enlarged schematic diagram at D in

[0026] As shown in the figure:

[0027] 1, middle plate; 2, bottom plate; 3, long strip protrusion; 4, wear-reducing groove; 5, support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific embodiments.

[0029] Referring to the attached Figures 1-7, a wear-resistant middle trough for a scraper conveyor of the present utility model, includes trough sides provided on both sides and a middle plate 1 and a bottom plate 2 fixedly connected between the two. The bottom plate 2 is directly below the middle plate 1.

[0030] Support plates 5 are provided on the upper end surfaces of the bottom plate 2 and the middle plate 1. A number of long strip protrusions 3 extending along the conveying direction are provided on the upper end surfaces of the support plates 5. The cross-section of the long strip protrusions 3 in the width direction is an upwardly convex arc. The front end surface and the rear end surface of the long strip protrusions 3 are both inclined surfaces inclined towards the inside of the middle trough.

[0031] A number of long strip protrusions 3 are arranged in parallel. There is a gap between adjacent two long strip protrusions 3. The width of the gap is adapted to the width of the long strip protrusions 3. The gap forms an anti-friction groove 4 with the support plate 5 as the bottom. Coal powder is provided in the anti-friction groove 4.

[0032] Adjacent two long strip protrusions 3 form a first protrusion group. Adjacent eight long strip protrusions 3 form a second protrusion group. The two second protrusion groups are located between the two first protrusion groups. The two first protrusion groups are respectively located at the two side edges of the upper end surface of the support plate 5. The four protrusion groups are arranged in the width direction. The distance between adjacent two protrusion groups is the same.

[0033] When the present utility model is in use, long strip protrusions 3 are provided on the upper end surfaces of the middle plate 1 and the bottom plate 2, so that a wavy pattern is formed on the upper end surfaces of the bottom plate 2 and the middle plate 1, thereby forming a double wavy pattern on the middle trough, making the long strip protrusions 3 contact the scraper, so that the scraper changes from surface contact to line contact, effectively reducing the contact area between the scraper and the middle plate 1 and between the scraper and the bottom plate 2, reducing the frictional resistance, thereby reducing the operating power, and at the same time increasing the service life of the middle trough. At the same time, the setting of the support plate 5 enhances the connection strength between the long strip protrusions 3. Through the connection between the support plate 5 and the middle plate 1 or the bottom plate 2, it is convenient for the long strip protrusions 3 to be connected to the middle plate 1 and the bottom plate 2; by providing coal powder in the anti-friction groove 4 and making full use of the lubricating effect of the coal powder, the wear of the middle plate 1, the scraper, and between the scraper and the bottom plate 2 by coal and gangue is greatly reduced, the service life of the scraper conveyor is extended, and the operating power is reduced; at the same time, the setting of the gap increases the volume of the anti-friction groove 4, thereby increasing the amount of coal powder contained, so as to ensure sufficient accumulation of coal powder and ensure sufficient lubrication effect.

[0034] Of course, the above description is not limited to the above examples. The technical features not described in this utility model can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and accompanying drawings are only used to illustrate the technical solutions of this utility model and are not a limitation to this utility model. The detailed description of this utility model is made with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in this technical field within the substantial scope of this utility model do not depart from the purpose of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. An abrasion-resistant middle trough for a scraper conveyor, comprising a bottom plate (2) and a middle plate (1), characterized in that: Support plates (5) are provided on the upper end surfaces of the bottom plate (2) and the middle plate (1), and a number of strip-shaped protrusions (3) extending in the conveying direction are provided on the upper end surfaces of the support plates (5).

2. The wear-resistant middle trough for scraper conveyors according to claim 1, characterized in that: There is a gap between two adjacent strip-shaped protrusions (3), and the gap forms an antifriction groove (4) with the support plate (5) as the bottom, and pulverized coal is provided in the antifriction groove (4).

3. The wear-resistant middle trough for scraper conveyors according to claim 1, characterized in that: The cross-section of the strip-shaped protrusion (3) in the width direction is an upwardly convex arc.

4. The wear-resistant middle trough for scraper conveyors according to claim 1, characterized in that: The front end face and the rear end face of the strip-shaped protrusion (3) are both inclined planes inclined towards the inner side of the middle groove.

5. The wear-resistant middle trough for scraper conveyors according to claim 2, characterized in that: The width of the gap is adapted to the width of the strip-shaped protrusion (3).

6. The wear-resistant middle trough for scraper conveyors according to claim 5, characterized in that: Several adjacent strip-shaped protrusions (3) form a protrusion group, and several protrusion groups are arranged in the width direction, and the distances between two adjacent protrusion groups are the same.

7. The wear-resistant middle trough for scraper conveyor according to claim 6, characterized in that: The first protrusion group includes two strip-shaped protrusions (3), the second protrusion group includes eight strip-shaped protrusions (3), two second protrusion groups are located between two first protrusion groups, and two first protrusion groups are respectively located at two side edges of the upper end surface of the support plate (5).

Images