Shaftless screw conveyor for recycling top coal at end of fully mechanized coal mining face

Abstract

The utility model belongs to the field of coal conveyor equipment, and relates to a shaftless screw conveyor for recycling top coal at the end of a fully mechanized coal mining face. Top coal at the end of a working face can be recycled when fully-mechanized coal mining equipment retracts, and the mining rate is increased. According to the technical scheme, the shaftless spiral conveyor comprises a shaftless spiral conveyor body and a coal slipping plate. The shaftless screw conveyor body is arranged on one side of an end support at a gate road of a fully mechanized coal mining face, and the extending direction of the shaftless screw conveyor body is consistent with the arrangement direction of a plurality of end supports at the gate road of the fully mechanized coal mining face. The shaftless screw conveyor body is provided with a plurality of end supports, the coal sliding plate is an obliquely-arranged plate and arranged in gaps among the end supports, one end of the coal sliding plate abuts against the rock wall of a gate road of the fully mechanized coal mining face, the other end of the coal sliding plate extends to the position above the shaftless screw conveyor body, and one end of the coal sliding plate is higher than the other end of the coal sliding plate.

Description

Technical Field

[0001] The utility model belongs to the field of coal mining equipment and relates to a shaftless screw conveyor for recovering top coal at the end of a fully mechanized mining working face. Background Art

[0002] Underground fully mechanized mining operations, such as Figure 1 As shown, in order to ensure the safety of the operation and facilitate air intake and transportation, working chutes 7 are provided on both sides of the working surface 6, wherein the intersection of the working chutes 7 and the working surface 6 is the end of the working surface.

[0003] The stress concentration of the roof at the end of the working face makes it easy for the roof to collapse. Therefore, an end bracket 8 is provided at the end of the working face for support. The top coal at the end of the working face is covered by the end bracket 8 and for safety reasons, the top coal at the end of the working face is not cut and recovered, resulting in great waste. Utility Model Content

[0004] In order to overcome the defects in the above-mentioned related technologies, the utility model proposes a shaftless screw conveyor for recovering the top coal at the end of a fully-mechanized mining face; the top coal at the end of the working face can be recovered when the fully-mechanized mining equipment is withdrawn, thereby improving the mining rate.

[0005] Some embodiments of the utility model provide a shaftless screw conveyor for recovering top coal at the end of a fully-mechanized mining face. The shaftless screw conveyor for recovering top coal at the end of a fully-mechanized mining face comprises: a shaftless screw conveyor body and a coal chute. The shaftless screw conveyor body is arranged at one side of an end support at the flume of the fully-mechanized mining face, and the extension direction of the shaftless screw conveyor body is consistent with the arrangement direction of a plurality of end supports at the flume of the fully-mechanized mining face. The coal chute is an inclined plate, and the coal chute is arranged in the gap between the plurality of end supports, and one end of the coal chute contacts the rock wall of the flume of the fully-mechanized mining face, and the other end of the coal chute extends to above the shaftless screw conveyor body, and one end of the coal chute is higher than the other end.

[0006] Preferably, the shaftless screw conveyor for top coal recovery at the end of the fully mechanized mining face further comprises a placement groove. A placement groove is provided on the ground on one side of the end support at the flume of the fully mechanized mining face, the extension direction of the placement groove is consistent with the arrangement direction of the multiple end supports at the flume of the fully mechanized mining face, the shaftless screw conveyor body is fixed in the placement groove, and the upper end of the shaftless screw conveyor body is not higher than the upper end of the placement groove.

[0007] Preferably, the shaftless screw conveyor for top coal recovery at the end of the fully mechanized mining working face further comprises: a bridge frame. The bridge frame comprises an upper end face, the width of the bridge frame is adapted to the width of the placement groove, the bridge frame is arranged in the placement groove, the upper end face of the bridge frame is flush with the ground on one side of the end bracket, and the bridge frame is configured to provide support for the end bracket when passing through the placement groove.

[0008] Preferably, the coal chute is a frame structure, and includes an upper inclined bracket. Two coal chutes are symmetrically arranged, and the coal chute plate is fixed on the inclined brackets of the two coal chutes.

[0009] Preferably, the shaftless screw conveyor for top coal recovery at the fully mechanized mining face end further comprises a high-altitude conveyor. A high-altitude conveyor is also arranged on one side of the discharge port of the shaftless screw conveyor body, one end of the high-altitude conveyor is arranged below the discharge port of the shaftless screw conveyor body, and the other end of the high-altitude conveyor is higher than the ground.

[0010] Preferably, the coal chute comprises: a base plate and a wear-resistant lining plate. The base plate is a metal plate. The wear-resistant lining plate is fixed on the side of the base plate, and the wear-resistant lining plate faces upward.

[0011] The beneficial effects of the utility model are:

[0012] The utility model installs the shaftless screw conveyor body on the side of the end supports arranged in a row away from the rock wall, and the end supports can be withdrawn one by one, and then the top coal is mined by manual labor, tunneling machines or drilling rigs and other equipment. A coal chute is arranged below the mining site, and the coal blocks can be guided into the shaftless screw conveyor by the coal chute, so as to achieve the purpose of quickly conveying the coal.

[0013] The utility model also adopts an installation groove, and the shaftless screw conveyor body can be installed inside the installation groove, and the end bracket is conveniently transferred through the bridge frame, which provides convenience for subsequent top coal mining.

[0014] The utility model adopts a shaftless screw conveyor body, which has the advantages of an open upper end and convenient feeding, and is suitable for the requirement of convenient and fast feeding of the shaftless screw conveyor body at the end of the working face. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural diagram of the prior art of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 It is a side structural diagram of the utility model;

[0019] Figure 4 This is a structural diagram for placing a bridge frame in the utility model. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0023] like Figures 2 to 4As shown, some embodiments of the utility model provide a shaftless screw conveyor for recovering top coal at the end of a fully-mechanized mining face. The shaftless screw conveyor for recovering top coal at the end of a fully-mechanized mining face comprises: a shaftless screw conveyor body 1 and a coal chute 2. The shaftless screw conveyor body 1 is arranged at one side of the end support at the flume of the fully-mechanized mining face, and the extension direction of the shaftless screw conveyor body 1 is consistent with the arrangement direction of multiple end supports at the flume of the fully-mechanized mining face. The coal chute 2 is an inclined plate, and the coal chute 2 is arranged in the gap between the multiple end supports, and one end of the coal chute 2 is against the rock wall of the flume of the fully-mechanized mining face, and the other end of the coal chute 2 extends to the top of the shaftless screw conveyor body 1, and one end of the coal chute 2 is higher than the other end.

[0024] Preferably, the shaftless screw conveyor for top coal recovery at the end of the fully mechanized mining face further comprises a placement groove 3. A placement groove 3 is provided on the ground on one side of the end bracket at the flume of the fully mechanized mining face, the extension direction of the placement groove 3 is consistent with the arrangement direction of multiple end brackets at the flume of the fully mechanized mining face, the shaftless screw conveyor body 1 is fixed in the placement groove 3, and the upper end of the shaftless screw conveyor body 1 is not higher than the upper end of the placement groove 3.

[0025] Preferably, the shaftless screw conveyor for top coal recovery at the end of the fully mechanized mining working face further comprises: a bridge frame 4. The bridge frame 4 comprises an upper end face, the width of the bridge frame 4 is adapted to the width of the placement groove 3, the bridge frame 4 is arranged in the placement groove 3, the upper end face of the bridge frame 4 is cut flush with the ground on one side of the end bracket, and the bridge frame 4 is configured to provide support for the end bracket when passing through the placement groove 3.

[0026] Preferably, the coal chute rack 5 is a frame structure, and the coal chute rack 5 includes an upper inclined bracket. Two coal chute racks 5 are symmetrically arranged, and the coal chute plate 2 is fixed on the inclined brackets of the two coal chute racks 5.

[0027] The coal chute rack 5 can be a steel structure welded frame. There are two coal chute racks 5, each of which is a right-angled triangular prism structure, and one side of the coal chute rack 5 is an inclined surface, which can facilitate the coal chute plate 2 to be fixed on the inclined bracket of the coal chute rack 5.

[0028] The two coal chute racks 5 can be adjusted according to the gap between the two end brackets to facilitate the installation of the coal chute plate 2.

[0029] Preferably, the shaftless screw conveyor for top coal recovery at the fully mechanized mining face end further comprises a high-altitude conveyor. A high-altitude conveyor is also arranged on one side of the discharge port of the shaftless screw conveyor body 1, one end of the high-altitude conveyor is arranged below the discharge port of the shaftless screw conveyor body 1, and the other end of the high-altitude conveyor is higher than the ground.

[0030] Preferably, the coal chute 2 comprises: a base plate and a wear-resistant lining plate. The base plate is a metal plate. The wear-resistant lining plate is fixed on the side of the base plate, and the wear-resistant lining plate faces upward.

[0031] The base can be steel plate, and the wear-resistant lining can be impact-resistant, wear-resistant steel plate or ceramic plate.

[0032] The specific application process is as follows:

[0033] When the comprehensive mining equipment begins to withdraw, such as coal mining machines, hydraulic supports and scraper conveyors, they can be gradually withdrawn, and the end supports in the working chute are retained.

[0034] An accommodating groove 3 is excavated on the ground on the side of the end bracket away from the rock wall. It can be understood that, in order to facilitate the setting of the bridge frame 4 and the shaftless screw conveyor body 1, the accommodating groove 3 can be a stepped groove, that is, the lower width of the accommodating groove 3 is adapted to the width of the shaftless screw conveyor body 1, so that the shaftless screw conveyor body 1 is installed at the lower part of the accommodating groove 3, the upper width of the accommodating groove 3 can be 3 to 5 times the lower width of the accommodating groove 3, and the bridge frame 4 is set at the upper part of the accommodating groove 3.

[0035] During the process of placing the coal chute rack 5 , the upper portion of the placement groove 3 between the rock wall and the shaftless screw conveyor body 1 can be filled to facilitate the placement of the coal chute rack 5 .

[0036] In the specific mining process, one end support in a row can be withdrawn, and when withdrawn, a bridge frame 4 is installed at the corresponding position. Then, a coal chute 2 is installed at the position, and the shaftless screw conveyor body 1 is started to start mining the top coal at the position. The mined coal falls onto the coal chute 2 and enters the shaftless screw conveyor body 1.

[0037] The end of the shaftless screw conveyor body 1 is a discharge port, and a belt conveyor or other conveying mechanism can be set at the discharge port to convey the coal to a higher position, so that the vehicle or conveying mechanism can output the coal.

[0038] To ensure safety, after the top coal excavation is completed at this location, the end support can be sent back to its original position, and the end support can be controlled to support the roof firmly to avoid danger during the mining process. When all the top coal is recovered and excavated, the equipment can be withdrawn according to the normal process.

[0039] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A shaftless screw conveyor for recovering top coal at the end of a fully mechanized mining face, characterized in that: include: A shaftless screw conveyor body, wherein the shaftless screw conveyor body is arranged on one side of an end support at a longitudinal slot of a fully mechanized mining working face, and an extending direction of the shaftless screw conveyor body is consistent with an arrangement direction of a plurality of end supports at the longitudinal slot of the fully mechanized mining working face; A coal chute, which is an inclined plate, is disposed in the gap between the plurality of end brackets, and one end of the coal chute is in contact with the rock wall of the longitudinal chute of the comprehensive mining working face, and the other end of the coal chute extends to above the shaftless screw conveyor body, and one end of the coal chute is higher than the other end.

2. The shaftless screw conveyor for top coal recovery at the end of a fully mechanized mining face according to claim 1, characterized in that: The shaftless screw conveyor for top coal recovery at the fully mechanized mining face end also includes a placement trough, An accommodation groove is provided on the ground on one side of the end head support at the longitudinal slot of the comprehensive mining working face, and the extension direction of the accommodation groove is consistent with the arrangement direction of multiple end head supports at the longitudinal slot of the comprehensive mining working face. The shaftless screw conveyor body is fixed in the accommodation groove, and the upper end of the shaftless screw conveyor body is not higher than the upper end of the accommodation groove.

3. The shaftless screw conveyor for top coal recovery at the end of a fully mechanized mining face according to claim 2 is characterized in that: The shaftless screw conveyor for top coal recovery at the end of the fully mechanized mining working face further comprises: a bridge frame; The bridge frame includes an upper end surface, the width of the bridge frame is adapted to the width of the mounting groove, the bridge frame is arranged in the mounting groove, and the upper end surface of the bridge frame is flush with the ground on one side of the end bracket. The bridge frame is configured to provide support for the end bracket when passing through the mounting groove.

4. The shaftless screw conveyor for top coal recovery at the end of a fully mechanized mining face according to claim 3 is characterized in that: The coal chute is a frame structure, and the coal chute includes an upper inclined support; The two coal chutes are symmetrically arranged, and the coal chute plates are fixed on the inclined brackets of the two coal chutes.

5. The shaftless screw conveyor for top coal recovery at the end of a fully mechanized mining face according to claim 4, characterized in that: The shaftless screw conveyor for top coal recovery at the end of the fully mechanized mining working face also includes a high-altitude conveyor; A high conveyor is also arranged on one side of the discharge port of the shaftless screw conveyor body, one end of the high conveyor is arranged below the discharge port of the shaftless screw conveyor body, and the other end of the high conveyor is higher than the ground.

6. The shaftless screw conveyor for top coal recovery at the end of a fully mechanized mining face according to claim 5, characterized in that: The coal chute comprises: A substrate, wherein the substrate is a metal plate; A wear-resistant lining plate is fixed on the side of the base plate and faces upward.

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