Top breaking device for two-roadway goaf of fully mechanized coal mining face

Abstract

A fully mechanized coal mining face two-roadway goaf roof breaking device comprises vertical telescopic pieces, top beams, a roof breaking assembly and a horizontal telescopic piece, the vertical telescopic pieces are arranged in a line and sequentially comprise the first vertical telescopic piece, the second vertical telescopic piece and the third vertical telescopic piece, the top beams are installed at the upper end of the first vertical telescopic piece and the upper end of the second vertical telescopic piece, and the roof breaking assembly is installed at the lower end of the first vertical telescopic piece and the upper end of the second vertical telescopic piece. A roof breaking assembly is installed at the upper end of the third vertical telescopic piece, every two adjacent vertical telescopic pieces are connected through a horizontal telescopic piece, when any vertical telescopic piece moves under the action of one horizontal telescopic piece, the other vertical telescopic pieces support the roof, and the risk that the roof collapses when the vertical telescopic pieces move is reduced.

Description

Technical Field

[0001] This utility model relates to the field of roof breaking technology in coal mining faces, and in particular to a roof breaking device for the goaf in two roadways of a fully mechanized mining face. Background Technology

[0002] Roof management in the goaf of fully mechanized mining faces has always been a challenge in underground coal mine management, with frequent instances of untimely roof collapse posing a threat to safe production. The article "Technology for Controlling Untimely Roof Collapse in the Goaf of Fully Mechanized Mining Faces" analyzes the reasons for this delay. Article 105 of the "Coal Mine Safety Regulations" stipulates that when using the caving method to manage the roof in a coal mining face, roof caving must be carried out promptly. If the roof fails to collapse or the suspended distance exceeds the limits specified in the operating procedures, coal mining must be stopped, and manual forced roof caving or other measures must be taken to address the issue.

[0003] Chinese utility model patent CN222025802U discloses a tracked integrated anchor-breaking unit support, including a base. Track assemblies are located on both sides of the base, each comprising track plates, guide cylinders, and connecting seats. Lifting cylinders and guide cylinders corresponding to the guide cylinders and connecting seats are located on the side walls of the base. Two columns are located on the upper surface of the base plate, with a top beam at the top of each column. Mounting seats and mounting plates are located at both ends of the base. An anchor-breaking robotic arm is mounted on the mounting seat, and an operating platform, power assembly, and hydraulic tank are located on the mounting plate. This invention solves the safety hazard caused by the roof not collapsing in the goaf of the two roadways of a fully mechanized mining face. However, a drawback is that the top beam and anchor-breaking robotic arm are both mounted on the same track assembly. During the movement to the next location to be anchored, neither the top beam nor the robotic arm can support the roof, potentially leading to roof collapse and endangering personnel safety. Summary of the Invention

[0004] In view of this, and to address the above-mentioned shortcomings, it is necessary to propose a roof-breaking device for the goaf in the two roadways of a fully mechanized mining face.

[0005] A roof-breaking device for the goaf in two roadways of a fully mechanized mining face includes vertical telescopic components, a roof beam, a roof-breaking assembly, and horizontal telescopic components. The vertical telescopic components are arranged in a line, namely a first vertical telescopic component, a second vertical telescopic component, and a third vertical telescopic component. The upper end of the first and second vertical telescopic components is equipped with a roof beam, and the upper end of the third vertical telescopic component is equipped with a roof-breaking assembly. Adjacent vertical telescopic components are connected by horizontal telescopic components.

[0006] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a cutting component. A fourth vertical telescopic component is arranged on the side of the first vertical telescopic component opposite to the second vertical telescopic component. The fourth vertical telescopic component is connected to the first vertical telescopic component through a horizontal telescopic component. The cutting component is installed at the upper end of the fourth vertical telescopic component.

[0007] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a base, and the lower end of any vertical telescopic component is equipped with the base.

[0008] Preferably, two adjacent bases are connected by two relatively parallel horizontal telescopic members.

[0009] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a transition piece, which is hinged to the base and to the horizontal telescopic piece.

[0010] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes protective plates, and protective plates are installed on both the third and fourth vertical expansion joints.

[0011] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a column ball, which is installed at the upper end of the vertical telescopic member and has a ball socket on the bottom surface of the top beam. The column ball and the ball socket are rotatably engaged.

[0012] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a column ball, which is installed at the lower end of the vertical telescopic member, and a ball socket is provided on the top surface of the base, with the column ball and the ball socket rotating in cooperation.

[0013] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a clamp, which fixes the vertical telescopic component to the base.

[0014] Preferably, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a protrusion, which is located on the upper surface of the roof beam.

[0015] Beneficial effect: When any vertical expansion joint moves under the action of a horizontal expansion joint, the other vertical expansion joints provide support for the roof, reducing the risk of the roof collapsing when the vertical expansion joints move. Attached Figure Description

[0016] Figure 1 This is a front view of the roof-breaking device in the goaf of the two roadways of the fully mechanized mining face.

[0017] Figure 2 This is a top view of the roof-breaking device in the goaf of the two roadways of the fully mechanized mining face.

[0018] Figure 3 This is a partial view from the first perspective of the roof-breaking device in the goaf of the two roadways of the fully mechanized mining face.

[0019] Figure 4 This is a partial view from the second perspective of the roof-breaking device in the goaf of the two roadways of the fully mechanized mining face.

[0020] In the diagram: Top plate 10, anchor cable 20, vertical expansion joint 30, top beam 40, roof breaking component 50, horizontal expansion joint 60, cutting component 70, base 80, adapter 90, guard plate 100, column ball 110, clamp 120, fixing plate 121, connecting plate 122, pin 123, protrusion 130. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] See Figures 1 to 4 This utility model embodiment provides a roof-breaking device for the goaf area in two roadways of a fully mechanized mining face, including vertical telescopic components 30, roof beams 40, roof-breaking components 50, and horizontal telescopic components 60. The vertical telescopic components 30 are arranged in a line, namely the first vertical telescopic component 30, the second vertical telescopic component 30, and the third vertical telescopic component 30. The roof beams 40 are installed at the upper ends of the first vertical telescopic component 30 and the roof-breaking components 50 are installed at the upper end of the third vertical telescopic component 30. Adjacent vertical telescopic components 30 are connected by horizontal telescopic components 60.

[0023] During the roof breaking process, the roof breaking component 50 is used to break the roof plate 10. Specifically, the roof breaking component 50 is a triangular pyramid that, under the action of the third vertical telescopic member 30, pushes into the roof plate 10 and breaks it. When the first vertical telescopic member 30 moves, the top beam 40 on the second vertical telescopic member 30 supports the roof plate 10, and the roof breaking component 50 on the third vertical telescopic member 30 can temporarily serve as a support for the roof plate 10. When the second vertical telescopic member 30 moves, the top beam 40 on the first vertical telescopic member 30 supports the roof plate 10, and the roof breaking component 50 on the third vertical telescopic member 30 can temporarily serve as a support for the roof plate 10. When the third vertical telescopic member 30 moves, the top beam 40 on both the second and third vertical telescopic members 30 supports the roof plate 10.

[0024] For example, both the vertical telescopic member 30 and the horizontal telescopic member 60 are hydraulic cylinders.

[0025] Beneficial effect: When any vertical telescopic member 30 moves under the action of a horizontal telescopic member 60, the other vertical telescopic members 30 provide support for the top plate 10, reducing the risk of the top plate 10 collapsing when the vertical telescopic members 30 move.

[0026] See Figures 1 to 4 Furthermore, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a cutting component 70. A fourth vertical telescopic component 30 is arranged on the side of the first vertical telescopic component 30 opposite to the second vertical telescopic component 30. The fourth vertical telescopic component 30 is connected to the first vertical telescopic component 30 through a horizontal telescopic component 60. The cutting component 70 is installed at the upper end of the fourth vertical telescopic component 30.

[0027] Before breaking through the roof, the cutting assembly 70 is used to break the steel strip and anchor cable 20 on the roof slab 10. The cutting assembly 70 is, for example, a hydraulic breaker.

[0028] See Figures 1 to 4 Furthermore, the roof-breaking device for the goaf area in the two roadways of the fully mechanized mining face includes a base 80, and the lower end of any vertical telescopic component 30 is equipped with the base 80.

[0029] See Figures 1 to 4 Furthermore, two adjacent bases 80 are connected by two relatively parallel horizontal telescopic members 60.

[0030] For example, the vertical telescopic members 30 are arranged in a line, with the plane containing the vertical telescopic members 30 being the first plane and the bottom surface of the top plate 10 being the second plane. The two horizontal telescopic members 60 move respectively, causing the third and fourth vertical telescopic members 30 to swing within the second plane, thus expanding the range of roof penetration.

[0031] See Figures 1 to 4 Furthermore, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a transition piece 90, which is hinged to the base 80 and to the horizontal telescopic piece 60.

[0032] The rotation axis of the adapter 90 and the base 80 is perpendicular to the first plane, and the rotation axis of the adapter 90 and the horizontal telescopic member 60 is perpendicular to the second plane.

[0033] See Figures 1 to 4 Furthermore, the roof-breaking device in the goaf of the two roadways of the fully mechanized mining face includes a protective plate 100, which is installed on both the third and fourth vertical expansion joints 30. The installation of the protective plate 100 can prevent falling roof fragments 10 from damaging the vertical expansion joints 30, the base 80, etc.

[0034] In one embodiment, the extension end of the guard plate 100 and the vertical telescopic member 30 is connected by a support telescopic member, which can be a hydraulic cylinder. When temporarily supporting the top plate 10, the support telescopic member extends and the guard plate 100 supports the top plate 10. When breaking through the top, the support telescopic member retracts and the breaking through component 50 protrudes from the upper surface of the guard plate 100.

[0035] See Figures 1 to 4Furthermore, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a column ball 110, which is installed on the upper end of the vertical telescopic member 30. A ball socket is provided on the bottom surface of the top beam 40, and the column ball 110 and the ball socket rotate in coordination.

[0036] See Figures 1 to 4 Furthermore, the roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a column ball 110, which is installed at the lower end of the vertical telescopic member 30. A ball socket is provided on the top surface of the base 80, and the column ball 110 and the ball socket rotate in coordination.

[0037] For example, both the column ball 110 and the socket are spherical, with the column ball 110 embedded in the socket, which is larger than a hemisphere. The installation method of the column ball 110 on the top beam 40 or the base 80 is a conventional structure and will not be described in detail. When the top-breaking component 50 or the cutting component 70 is working, the contact surfaces between the two top beams 40 and the top plate 10 are not coplanar, resulting in high stability.

[0038] See Figures 1 to 4 Furthermore, the roof-breaking device for the goaf area in the two roadways of the fully mechanized mining face includes a clamp 120, which fixes the vertical telescopic component 30 to the base 80.

[0039] For example, the clamp 120 includes a fixing plate 121, a connecting plate 122, and a pin 123. There are two connecting plates 122, namely a first connecting plate 122 and a second connecting plate 122. The fixing plate 121 is fixed to the base 80. The first ends of the first connecting plate 122 and the second connecting plate 122 are hinged to the fixing plate 121 by the pin 123, and the second ends of the first connecting plate 122 and the second connecting plate 122 are connected by bolts. The predetermined strength pin 123 can be customized according to the test. If the vertical telescopic member 30 is subjected to excessive force, the pin 123 will break first under shear force. The pin 123 is easy to replace.

[0040] See Figures 1 to 4 Furthermore, the roof-breaking device for the goaf area in the two roadways of the fully mechanized mining face includes a protrusion 130, which is located on the upper surface of the roof beam 40.

[0041] The modules or units in the device of this utility model embodiment can be merged, divided, or deleted according to actual needs.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A roof-breaking device for the goaf in two roadways of a fully mechanized mining face, characterized in that: It includes vertical telescopic components, a top beam, a roof-breaking component, and horizontal telescopic components. The vertical telescopic components are arranged in a line, namely, a first vertical telescopic component, a second vertical telescopic component, and a third vertical telescopic component. The top beam is installed at the upper end of the first and second vertical telescopic components, and the roof-breaking component is installed at the upper end of the third vertical telescopic component. Adjacent vertical telescopic components are connected by horizontal telescopic components.

2. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 1, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a cutting component. A fourth vertical telescopic component is arranged on the side of the first vertical telescopic component opposite to the second vertical telescopic component. The fourth vertical telescopic component is connected to the first vertical telescopic component through a horizontal telescopic component. The cutting component is installed at the upper end of the fourth vertical telescopic component.

3. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 2, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a base, and the lower end of any vertical telescopic component is equipped with a base.

4. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 3, characterized in that: The two adjacent bases are connected by two relatively parallel horizontal telescopic components.

5. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 4, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a transition piece, which is hinged to the base and to the horizontal telescopic piece.

6. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 2, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes protective plates, which are installed on both the third and fourth vertical expansion joints.

7. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 3, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a column ball, which is installed at the upper end of the vertical telescopic member. A ball socket is provided on the bottom surface of the top beam, and the column ball and the ball socket are rotatably engaged.

8. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 3, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a column ball, which is installed at the lower end of the vertical telescopic member. A ball socket is provided on the top surface of the base, and the column ball and the ball socket are rotatably engaged.

9. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 8, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a clamp, which fixes the vertical telescopic component to the base.

10. The roof-breaking device for the goaf in the two roadways of a fully mechanized mining face as described in claim 1, characterized in that: The roof-breaking device for the goaf in the two roadways of the fully mechanized mining face includes a protrusion, which is located on the upper surface of the roof beam.

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