Transition support suitable for roadway and fully mechanized coal mining face

Abstract

The utility model relates to a transition support suitable for a roadway and a fully-mechanized coal mining face, the roadway is provided with a roadway top plate, the fully-mechanized coal mining face is provided with a fully-mechanized coal mining face top plate, a transition face top plate is arranged between the roadway top plate and the fully-mechanized coal mining face top plate, and the transition face top plate is of an arc-shaped structure matched with the outer wall of a roller of a coal mining machine. The transition support comprises a supporting beam and a supporting piece installed on the supporting beam, and at least part of the top end of the supporting piece is attached to the transition face top plate. Thus, when the transition support is lifted to support the transition face top plate, at least part of the top end of the supporting piece is attached to the transition face top plate, so that the transition face top plate is evenly stressed, the supporting effect on the transition face top plate is enhanced, and local roof fall accidents caused by too concentrated stress of the transition face top plate are prevented.

Description

Technical Field

[0001] The present disclosure relates to the technical field of roadway support equipment, and in particular, to a transition support applicable to the transition between a roadway and a fully-mechanized coal mining face. Background Art

[0002] The mining height of a large mining height fully-mechanized coal mining face is greater than the roadway height. The mining height of a large mining height fully-mechanized coal mining face can reach more than 7m, while the roadway height at both ends is generally not more than 5m due to factors such as the maximum tunneling schedule of the roadheader and the roadway support strength. Thus, the mining height of the working face is greater than the roadway height. Therefore, the roof of the fully-mechanized coal mining face is higher than the roadway roof.

[0003] During the actual coal mining process, when the drum on the shearer reaches the transition position between the roadway and the fully-mechanized coal mining face, it stops moving forward and moves vertically downward to cut out an arc-shaped transition surface. In the related art, since the roof of the transition surface at the transition position is arc-shaped, while the top beam of the support is flat-shaped, the two do not match. The top beam of the support cannot fit the roof of the transition surface, and the two are in point contact, resulting in a poor support effect on the fully-mechanized coal mining face. The concentrated stress borne by the roof due to the supporting force of the support is very large, and even causes a roof-breaking effect, inducing roof caving at this place, seriously affecting the operation safety and the advancing speed of the working face. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a transition support applicable to the transition between a roadway and a fully-mechanized coal mining face to at least partially solve the problems existing in the related art.

[0005] To achieve the above purpose, the present disclosure provides a transition support applicable to the transition between a roadway and a fully-mechanized coal mining face. The roadway has a roadway roof, the fully-mechanized coal mining face has a fully-mechanized coal mining face roof, and there is a transition surface roof between the roadway roof and the fully-mechanized coal mining face roof. The transition surface roof is configured as an arc-shaped structure adapted to the outer wall of the shearer drum. The transition support includes a support beam and a support member installed on the support beam, and at least part of the top end of the support member fits the transition surface roof.

[0006] Optionally, the support member includes a first part that fits the transition surface roof and a second part that fits the fully-mechanized coal mining face roof.

[0007] Optionally, the width of the first part is the same as the width of the second part.

[0008] Optionally, the support beam includes a plurality of transverse support plates and longitudinal support plates arranged perpendicular to each other.

[0009] Optionally, the support member includes a cover plate fixedly installed on the top of the support beam.

[0010] Optionally, both the support beam and the cover plate are made of steel.

[0011] Optionally, the support member includes a filling block filled between the horizontal support plate and the vertical support plate, and the top end of the filling block protrudes from the top end of the support beam.

[0012] Optionally, the filling block is made of an elastic material.

[0013] Optionally, a bottom plate is installed at the bottom of the support beam.

[0014] Optionally, the width of the transition support is 1.5 m to 2.5 m, and the height is 0.3 m to 0.5 m.

[0015] Through the above technical solution, when the transition support raises to support the roof of the transition surface, at least part of the top end of the support member fits with the roof of the transition surface, making the roof of the transition surface evenly stressed, strengthening the support effect on the roof of the transition surface, and preventing local roof fall accidents on the roof of the transition surface due to too concentrated stress.

[0016] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0017] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0018] Figure 1 is a schematic structural diagram of a transition support applicable to the roadway and the fully-mechanized coal mining face provided by an exemplary embodiment of the present disclosure;

[0019] Figure 2 is an assembly schematic diagram of the transition support, the roof of the fully-mechanized coal mining face, and the roof of the transition surface provided by an exemplary embodiment of the present disclosure.

[0020] Description of the Reference Numerals

[0021] 10 - Transition support; 1 - Roadway roof; 2 - Roof of the fully-mechanized coal mining face; 3 - Roof of the transition surface; 4 - Shearer drum; 5 - Support beam; 51 - Horizontal support plate; 52 - Vertical support plate; 6 - Support member; 61 - First part; 62 - Second part; 7 - Bottom plate; 8 - Side guard plate Detailed Description of the Invention

[0022] The following will describe in detail the specific implementation of the present disclosure with reference to the drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0023] In this disclosure, unless otherwise stated, the orientation terms "upper", "lower", "top", and "bottom" are defined based on the actual usage direction of the relevant components. "Inner" and "outer" refer to the outline of the corresponding components themselves. The terms "first", "second", etc. are used to distinguish different components and do not have sequential or importance. In this disclosure, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] Referring to Figure 1 , Figure 2 , this disclosure provides a transition support applicable to a roadway and a fully mechanized coal mining face. Among them, the roadway has a roadway roof 1, the fully mechanized coal mining face has a fully mechanized coal mining face roof 2, and there is a transition surface roof 3 between the roadway roof 1 and the fully mechanized coal mining face roof 2. The transition surface roof 3 is configured as an arc structure adapted to the outer wall of the shearer drum 4, that is, the diameter of the arc structure of the transition surface roof 3 is the same as the diameter of the shearer drum 4. The transition support 10 may include a support beam 5 and a support member 6 installed on the support beam 5. At least part of the top end of the support member 6 is in contact with the transition surface roof 3. A side guard plate 8 is fixed to one side of the transition support 10 close to the roadway, and the lower end of the side guard plate 8 is connected to the support of the roadway roof 1. The top of the side guard plate 8 is configured as an arc structure adapted to the transition surface roof 3 to avoid interference with the transition surface roof 3. In an embodiment of this disclosure, the transition support 10 is a hydraulic support. After the shearer drum 4 mines coal, the hydraulic support rises to support the roof.

[0025] Through the above technical solution, when the transition support rises to support the transition surface roof, at least part of the top end of the support member is in contact with the transition surface roof, making the force on the transition surface roof uniform, strengthening the support effect on the transition surface roof, and preventing local roof fall accidents on the transition surface roof due to too concentrated force.

[0026] According to an exemplary embodiment of this disclosure, referring to Figure 1 , the support member 6 may include a first part 61 in contact with the transition surface roof 3 and a second part 62 in contact with the fully mechanized coal mining face roof 2. The end face of the fully mechanized coal mining face roof 2 is a plane. In order to increase the support strength of the transition support 10, the transition support 10 needs to have sufficient width, and it can support part of the fully mechanized coal mining face roof 2 while supporting the transition surface roof 3. Therefore, the end face of the first part 61 of the support member 6 is configured as an arc surface, and the end face of the second part 62 is configured as a plane. When placing the transition support 10, the first part 61 is installed close to the roadway to achieve the transition.

[0027] Specifically, referring to Figure 1, the width of the first part 61 can be the same as the width of the second part 62. That is, the transition support 10 takes the central axis in the width direction as the dividing line, with the first part 61 on one side and the second part 62 on the other side. When the shearer cuts coal, when the top of the shearer drum 4 just reaches the central axis position of the transition support 10, the shearer stops cutting coal forward. At this time, the shearer drum 4 cuts coal downward to ensure that the central axis of the transition support 10 is just at the junction of the transition face roof 3 and the fully-mechanized mining face roof 2.

[0028] In some embodiments, referring to Figure 1 , the support beam 5 can include a plurality of horizontally supporting plates 51 and vertically supporting plates 52 arranged perpendicular to each other. In the embodiments of the present disclosure, a plurality of horizontally supporting plates 51 are welded between adjacent vertically supporting plates 52 to form a grid-shaped support beam. The support beam 5 has uniform stress and is prevented from being damaged.

[0029] As an exemplary embodiment of the present disclosure, referring to Figure 1 , the support member 6 can include a cover plate fixedly installed on the top of the support beam 5. The end face of the cover plate of the first part 61 is configured as an arc surface, and the end face of the cover plate of the second part 62 is configured as a plane for fitting with the transition face roof 3 and the fully-mechanized mining face roof 2.

[0030] Furthermore, the materials of the support beam 5 and the cover plate can both be steel. Among them, the horizontally supporting plates 51 and the vertically supporting plates 52 can be cut from thick steel plates.

[0031] As another exemplary embodiment of the present disclosure, the support member 6 can include filling blocks filled between the horizontally supporting plates 51 and the vertically supporting plates 52, and the top ends of the filling blocks protrude from the top end of the support beam 5. In this embodiment, the transition support 10 can be provided without a cover plate. Specifically, the filling blocks can be made of a high-strength flame-retardant and antistatic high-molecular material. The filling blocks are filled into the grid, and the size of each filling block is the same as each grid of the support beam 5. The height of the filling block is slightly higher than that of the support beam 5, so that the filling block can better fit the roof.

[0032] Furthermore, the filling blocks can be made of an elastic material. In this way, the filling blocks can be bent according to the curvature of different transition face roofs 3 to be able to adapt to transition face roofs 3 with different curvatures.

[0033] Among them, referring to Figure 1 , a bottom plate 7 can be installed at the bottom of the support beam 5. The material of the bottom plate 7 can be steel.

[0034] In some embodiments, referring to Figure 2, the width of the transition bracket 10 can be 1.5 m to 2.5 m, specifically 2 m, and the height can be 0.3 m to 0.5 m, specifically 0.4 m. The present disclosure does not limit the size of the transition bracket 10, and it can be adjusted according to actual needs.

[0035] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0036] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, without conflict, they can be combined in any suitable manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0037] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A transition support suitable for tunnels and fully mechanized mining working faces, wherein: The tunnel has a tunnel roof, and the comprehensive mining working face has a comprehensive mining working face roof. There is a transition surface roof between the tunnel roof and the comprehensive mining working face roof. The transition surface roof is constructed into an arc structure that is compatible with the outer wall of the coal mining machine drum. It is characterized in that the transition bracket includes a support beam and a support member installed on the support beam, and at least a portion of the top end of the support member is in contact with the transition surface roof.

2. The transition bracket according to claim 1, characterized in that: The supporting member includes a first part that is in contact with the top plate of the transition surface and a second part that is in contact with the top plate of the comprehensive mining working face.

3. The transition bracket according to claim 2, characterized in that: The width of the first portion is the same as the width of the second portion.

4. The transition bracket according to any one of claims 1 to 3, characterized in that: The support beam comprises a plurality of transverse support plates and longitudinal support plates which are arranged perpendicular to each other.

5. The transition bracket according to claim 4, characterized in that: The support member includes a cover plate fixedly mounted on the top of the support beam.

6. The transition bracket according to claim 5, characterized in that: The support beam and the cover plate are both made of steel.

7. The transition bracket according to claim 4, characterized in that: The supporting member includes a filling block filled between the transverse supporting plate and the longitudinal supporting plate, and the top end of the filling block protrudes from the top end of the supporting beam.

8. The transition bracket according to claim 7, characterized in that: The filling block is made of elastic material.

9. The transition bracket according to claim 1, characterized in that: A bottom plate is installed at the bottom of the support beam.

10. The transition bracket according to claim 1, characterized in that: The width of the transition bracket is 1.5m~2.5m, and the height is 0.3m~0.5m.

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