Middle trough assembly with trough length of 2800mm and adapting to super-strong mine pressure

Abstract

The invention relates to the field of mining scraper conveyors, in particular to a scraper conveyor middle trough assembly, and a middle trough belongs to a key component of a coal mine underground working face scraper conveyor, provides a track for operation of a coal mining machine, is a fulcrum with a hydraulic support, and moves forwards alternately. As the thickness of a mined coal seam is continuously increased and the length of the working face is continuously increased, the mine pressure in the coal mining process of the fully mechanized working face is more obvious, the supporting resistance of the support is continuously increased, the width of the support is continuously increased due to the increase of the supporting resistance of the support, and the width of the support is rapidly developed from 1500 mm, 1750 mm, 2050 mm and 2400 mm. In recent years, in order to adapt to larger supporting resistance, the width of a hydraulic support needs to be developed towards the width of 2800mm, so that a scraper conveyor is required to develop a middle trough assembly adaptive to the scraper conveyor, and the requirement for high mine pressure mining is met, and the middle trough assembly with the trough length of 2800mm is developed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mining scraper conveyor, in particular to a 2800 mm long trough to adapt to strong mine pressure middle trough assembly. BACKGROUND

[0002] In recent years, scraper conveyor has been developing in two directions. One is to develop in the direction of higher height of coal mining. In the past ten years, the height of fully mechanized mining face has been developing from 6.3 meters, 7.2 meters, 8.2 meters, 8.8 meters to 10 meters. The scraper conveyor has also been developing to the super heavy scraper conveyor. The trough width, chain specification and installed power of the scraper conveyor have been continuously innovated. On the other hand, with the increasing number of mine with rock burst, the mining speed of fully mechanized mining face in mine will be strictly controlled once the mine is identified as mine with rock burst. This results in that many newly built mines cannot achieve the production requirement in 10 years. In this harsh condition, in order to achieve the production requirement of mine, the length of mining face is continuously increased in recent years. The length of mining face in China has been continuously increased from 400 meters, 480 meters, 500 meters to 550 meters. The mining process of super large mining height or super long mining face will cause strong mine pressure. In order to adapt to strong pressure, the most direct method is to increase the support resistance of hydraulic support. The increase of support resistance of hydraulic support will cause the increase of width of hydraulic support, and then the length of middle trough matched with the hydraulic support will change. The width of hydraulic support is 1500 mm, 1750 mm, 2050 mm, 2400 mm. The support resistance of hydraulic support reaches 28000 KN. With the further development of total fully mechanized mining face, the width of hydraulic support develops to 2800 mm, and the support resistance reaches 38000 KN. This requires to develop 2800 mm long middle trough to adapt to strong mine pressure. SUMMARY

[0003] The purpose of the present application is to provide a 2800 mm long trough to adapt to strong mine pressure middle trough assembly, which solves the problem of strong mine pressure of fully mechanized mining face. The 2800 mm long trough to adapt to strong mine pressure middle trough assembly comprises a baffle trough side 1, a scraper trough side 2, a right rail seat 3, a left rail seat 4, a connecting plate assembly 5, a middle plate 6, a bottom plate 7, a secondary rail plate, the baffle trough side 1 and the scraper trough side 2 are connected with the middle plate 6 and the bottom plate 7 by welding, the connecting plate assembly 5 is welded on the baffle trough side 1, the right rail seat 3 and the left rail seat 4 are welded on the connecting plate assembly 5, and the components are connected into a middle trough assembly by welding. The length of the middle trough is up to 2800 mm, the width A of the trough is greater than 1100 mm, and the connecting strength between the middle troughs is greater than 6500 KN. The pin rail pitch matched with the coal mining is greater than 201 mm. BRIEF DESCRIPTION OF DRAWINGS

[0004] The application is further described by the following drawings and examples Fig. 1 is the front view of the application; Fig. 2 is the top view; Fig. 3 is the side view; 1. baffle groove, 2. shovel groove, 3. right rail seat, 4. left rail seat, 5. coupling plate assembly, 6. middle plate, 7. bottom plate. DETAILED DESCRIPTION

[0005] In Figs. 1-3 the baffle groove 1 and the shovel groove 2 are connected with the middle plate 6 and the bottom plate 7 by welding, the coupling plate assembly 5 is welded on the baffle groove 1, the length of the baffle groove 1, the shovel groove 2 and the coupling plate assembly 5 reaches 2800 mm, the right rail seat 3 and the left rail seat 4 are welded on the coupling plate assembly 5 to form the whole middle groove assembly with the length of 2800 mm, in order to adapt to the moving process of the 2800 mm hydraulic support, the connecting strength between the middle grooves is greater than 6500 KN, and the pitch of the pin rail of the coal mining machine is 201 mm or 235 mm.

Claims

1. A 2800mm long trough assembly adapted to ultra-high mining pressure, comprising a baffle trough side (1), a shovel trough side (2), a right rail seat (3), a left rail seat (4), a connecting plate assembly (5), a middle plate (6), and a bottom plate (7), where A represents the trough width, characterized in that... The auxiliary rail plate, baffle groove (1) and shovel groove (2) are connected to the middle plate (6) and bottom plate (7) by welding. The connecting plate assembly (5) is welded on the baffle groove (1). The right rail seat (3) and left rail seat (4) are welded on the connecting plate assembly (5). The components are welded together to form the middle groove assembly.

2. The 2800mm long trench assembly adapted to ultra-high mining pressure as described in claim 1, characterized in that... The length of the central groove is up to 2800 mm, the width A is greater than 1100 mm, and the connection strength between the central grooves is greater than 6500 KN.

3. The 2800mm long channel assembly adapted to ultra-strong mining pressure as described in claim 1 is characterized in that the pitch of the matching coal mining guide rail is greater than 201 mm.

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