Roof breaking support for coal face

Abstract

A coal face roof-breaking support comprises a roof-breaking unit, a linkage unit and a unit support, the linkage unit comprises a first telescopic piece and a connecting piece, the two ends of the first telescopic piece are hinged to the roof-breaking unit and the unit support respectively, the two ends of the connecting piece are hinged to the roof-breaking unit and the unit support respectively, and the connecting piece cannot be stretched or shortened; the connecting pieces cannot stretch out and draw back, when inclining front and back and left and right relative to the unit supports, the roof breaking units are restrained by the connecting pieces, the stability of the roof breaking units is improved, and the toppling risk of the roof breaking units is reduced.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roof breaking technology, and in particular to a roof breaking support for coal mining faces. Background Technology

[0002] Article 105 of the Coal Mine Safety Regulations stipulates that when the roof is managed using the caving method at a coal mining face, the roof must be caved in a timely manner. If the roof does not collapse or the suspended roof distance exceeds the provisions of the operating procedures, coal mining must be stopped, and manual forced roof caving or other measures must be taken to handle the situation.

[0003] Chinese invention patent application number 202310591817.X discloses a self-moving multi-functional roof-breaking device for roadways, including a front frame, a rear frame, and a connecting frame jack connecting the front frame and the rear frame; the rear frame includes a rear base, columns vertically arranged at the four corners of the rear base, and a support beam and a roof-breaking beam connected to each pair of columns. A roof-breaking module or a mesh-cutting module is provided on the roof-breaking beam. The connecting frame jack is connected to the connection point behind the front frame and the connection point in front of the rear frame, respectively, to realize the self-moving operation of pushing the front frame and pulling the rear frame.

[0004] The front frame supports the rear frame via connecting jacks. During the movement of the rear frame, it loses its support from the top plate. The connecting jacks expand and contract within a certain range of force, losing their effectiveness in supporting the rear frame. The rear frame itself has poor stability and a high risk of tipping over. Summary of the Invention

[0005] In view of this, and to address the above-mentioned shortcomings, it is necessary to propose a roof-breaking support for coal mining faces.

[0006] A roof-breaking support for a coal mining face includes a roof-breaking unit, a linkage unit, and a unit support. The linkage unit includes a first telescopic member and a connecting member. The two ends of the first telescopic member are respectively hinged to the roof-breaking unit and the unit support. The two ends of the connecting member are respectively hinged to the roof-breaking unit and the unit support. The connecting member cannot be extended or shortened.

[0007] Preferably, the roof-breaking unit and the unit support are arranged in a line, and the rotation axes of the first telescopic member and the connecting member relative to the roof-breaking unit are both perpendicular to the plane where the roof-breaking unit and the unit support are located.

[0008] Preferably, the roof-breaking unit includes a roof-breaking base, a slope roof assembly, a second telescopic member, and a third telescopic member. The slope roof assembly is located at the upper end of the second telescopic member, the roof-breaking base is located at the lower end of the second telescopic member, the second telescopic member is hinged to the roof-breaking base, one end of the third telescopic member is hinged to the roof-breaking base, and the other end of the third telescopic member is hinged to the second telescopic member.

[0009] Preferably, the roof-breaking unit includes a protective plate, which is disposed on both sides of the roof-breaking base.

[0010] Preferably, the roof-breaking unit includes a backing plate, which is fixed on the roof-breaking base. One end face of the connector contacts one side of the backing plate. The end face of the connector that contacts the backing plate is arc-shaped. The upper part of the backing plate is a straight plate, and the lower part of the backing plate is an arc shape that rolls with the end face of the connector.

[0011] Preferably, the top-breaking unit includes a baffle plate, which is disposed above the abutment plate.

[0012] Preferably, the unit support includes a top beam, a fourth telescopic member, and a support base, with the top beam located at the upper end of the fourth telescopic member and the support base located at the lower end of the fourth telescopic member.

[0013] Preferably, the linkage unit includes a first adapter, one end of which is hinged to the connector, and the other end of which is hinged to the support base. The rotation axis of the first adapter relative to the connector is parallel to the plane where the roof breaking unit and the unit support are located, and the rotation axis of the first adapter relative to the support base is perpendicular to the plane where the roof breaking unit and the unit support are located.

[0014] Preferably, the linkage unit includes a second adapter, one end of which is hinged to the first telescopic member, and the other end of which is hinged to the support base. The rotation axis of the second adapter relative to the first telescopic member is parallel to the plane where the roof-breaking unit and the unit support are located, and the rotation axis of the second adapter relative to the support base is perpendicular to the plane where the roof-breaking unit and the unit support are located.

[0015] Preferably, the unit bracket includes a clamp, and the fourth telescopic member is connected to the support base via the clamp.

[0016] Beneficial effects: Since the connector is non-extendable, when the top-breaking unit tilts relative to the unit support in the front-back or left-right directions, it is restrained by the connector, thus improving the stability of the top-breaking unit and reducing the risk of the top-breaking unit tipping over. Attached Figure Description

[0017] Figure 1 This is a front view of the roof-breaking support of the coal mining face.

[0018] Figure 2 This is a top view of the roof-breaking support of the coal mining face.

[0019] Figure 3 for Figure 1 A schematic diagram of the partial internal structure of the top-breaking unit described in the figure.

[0020] Figure 4 for Figure 2 A schematic diagram of the partial internal structure of the top-breaking unit described in the figure.

[0021] In the diagram: roof breaking unit 10, roof breaking base 11, slope roof assembly 12, second telescopic component 13, third telescopic component 14, guard plate 15, abutment plate 16, baffle 17, linkage unit 20, first telescopic component 21, connector 22, adapter 23, unit bracket 30, top beam 31, fourth telescopic component 32, support base 33, clamp 34, top plate 40. Detailed Implementation

[0022] 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.

[0023] See Figures 1 to 4 This utility model embodiment provides a roof breaking support for a coal mining face, including a roof breaking unit 10, a linkage unit 20, and a unit support 30. The linkage unit 20 includes a first telescopic member 21 and a connecting member 22. The two ends of the first telescopic member 21 are respectively hinged to the roof breaking unit 10 and the unit support 30, and the two ends of the connecting member 22 are respectively hinged to the roof breaking unit 10 and the unit support 30. The connecting member 22 cannot be extended or shortened.

[0024] In use, the unit support 30 is used to support the roof 40 of the coal mining face, the roof breaking unit 10 is used to break the roof 40 of the coal mining face, the first telescopic member 21 extends or shortens, and the roof breaking unit 10 swings relative to the unit support 30.

[0025] Beneficial effects: Since the connector 22 is non-extendable, when the top-breaking unit 10 tilts relative to the unit support 30 in the front-back or left-right directions, it is restrained by the connector 22, thereby improving the stability of the top-breaking unit 10 and reducing the risk of the top-breaking unit 10 tipping over.

[0026] See Figures 1 to 4 Furthermore, the roof-breaking unit 10 and the unit support 30 are arranged in a line, and the rotation axes of the first telescopic member 21 and the connecting member 22 relative to the roof-breaking unit 10 are both perpendicular to the plane where the roof-breaking unit 10 and the unit support 30 are located.

[0027] For example, it is preferable that the first telescopic member 21 and the connecting member 22 are arranged to be parallel to each other.

[0028] The "front and back" mentioned in the context refers to the arrangement direction of the top-breaking unit 10 and the unit support 30, while the "left and right" mentioned in the context refers to the direction perpendicular to the plane where the top-breaking unit 10 and the unit support 30 are located.

[0029] See Figures 1 to 4Furthermore, the roof-breaking unit 10 includes a roof-breaking base 11, a roof-breaking assembly 12, a second telescopic member 13, and a third telescopic member 14. The roof-breaking assembly 12 is located at the upper end of the second telescopic member 13, and the roof-breaking base 11 is located at the lower end of the second telescopic member 13. The second telescopic member 13 is hinged to the roof-breaking base 11, and one end of the third telescopic member 14 is hinged to the roof-breaking base 11, while the other end of the third telescopic member 14 is hinged to the second telescopic member 13. The third telescopic member 14 extends or retracts, and the second telescopic member 13 causes the roof-breaking assembly 12 to swing back and forth.

[0030] For example, the roof-breaking component is used to break the roof plate 40. Specifically, the roof-breaking component is a triangular pyramid that is pushed into the roof plate 40 under the action of the second telescopic member 13, thereby breaking the roof plate 40. It is preferable that the third telescopic member 14 is connected to the fixed end of the second telescopic member 13. The second telescopic member 13 can also be rotatably connected to the roof-breaking base 11. The second telescopic member 13 swings back and forth and left and right relative to the roof-breaking base 11. The specific connection structure is not limited in this application.

[0031] See Figures 1 to 4 Furthermore, the roof-breaking unit 10 includes a protective plate 15, which is disposed on both sides of the roof-breaking base 11.

[0032] See Figures 1 to 4 Furthermore, the roof-breaking unit 10 includes abutment plate 16, which is fixed on the roof-breaking base 11. One end face of the connector 22 contacts one side of the abutment plate 16. The end face of the connector 22 that contacts the abutment plate 16 is arc-shaped. The upper part of the abutment plate 16 is a straight plate, and the lower part of the abutment plate 16 is an arc shape that rolls with the end face of the connector 22.

[0033] The connector 22 rotates relative to the roof-breaking base 11, and the connector 22 rolls with the abutment plate 16. The pin at the hinge of the abutment plate 16 and the roof-breaking base 11 is protected and is not easily bent. The abutment plate 16 can also be provided at the connection between the first telescopic member 21 and the roof-breaking base 11. The structure and function are the same, so they will not be described again.

[0034] See Figures 1 to 4 Furthermore, the top-breaking unit 10 includes a baffle 17, which is located above the abutment plate 16.

[0035] The baffle 17 is perpendicular to the upper part of the abutment plate 16, and the edge of the baffle 17 extends directly above the hinge point between the connector 22 and the top-breaking base 11, which can limit the crushing unit from tilting towards the unit support 30 at a certain angle. The first telescopic member 21 can also be provided with a baffle 17 at the connection between it and the top-breaking base 11. The structure and function are the same, so they will not be described in detail.

[0036] See Figures 1 to 4Furthermore, the unit support 30 includes a top beam 31, a fourth telescopic member 32, and a support base 33. The top beam 31 is located at the upper end of the fourth telescopic member 32, and the support base 33 is located at the lower end of the fourth telescopic member 32.

[0037] For example, the first telescopic member 21, the second telescopic member 13, the third telescopic member 14, and the fourth telescopic member 32 are hydraulic cylinders, and the connecting member 22 is a non-extendable rigid plate or rod.

[0038] See Figures 1 to 4 Furthermore, the linkage unit 20 includes a first adapter 23, one end of which is hinged to the connector 22, and the other end of which is hinged to the support base 33. The rotation axis of the first adapter 23 relative to the connector 22 is parallel to the plane where the top-breaking unit 10 and the unit support 30 are located, and the rotation axis of the first adapter 23 relative to the support base 33 is perpendicular to the plane where the top-breaking unit 10 and the unit support 30 are located.

[0039] See Figures 1 to 4 Furthermore, the linkage unit 20 includes a second adapter 23. One end of the second adapter 23 is hinged to the first telescopic member 21, and the other end of the second adapter 23 is hinged to the support base 33. The rotation axis of the second adapter 23 relative to the first telescopic member 21 is parallel to the plane where the roof breaking unit 10 and the unit support 30 are located, and the rotation axis of the second adapter 23 relative to the support base 33 is perpendicular to the plane where the roof breaking unit 10 and the unit support 30 are located.

[0040] See Figures 1 to 4 Furthermore, the unit bracket 30 includes a clamp 34, and the fourth telescopic member 32 is connected to the support base 33 through the clamp 34.

[0041] The fourth telescopic member 32 is hinged to the support base 33 and the top beam 31, and can also be rotatably connected. The fourth telescopic member 32 swings back and forth and left and right relative to the support base 33 or the top beam 31. This application does not limit the specific rotatable connection structure and the structure of the clamp 34.

[0042] The modules or units in the device of this utility model embodiment can be merged, divided, or deleted according to actual needs.

[0043] 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 support for a coal mining face, characterized in that: It includes a roof-breaking unit, a linkage unit, and a unit support. The linkage unit includes a first telescopic component and a connecting component. The two ends of the first telescopic component are respectively hinged to the roof-breaking unit and the unit support. The two ends of the connecting component are respectively hinged to the roof-breaking unit and the unit support. The connecting component cannot be extended or shortened.

2. The roof-breaking support for coal mining faces as described in claim 1, characterized in that: The roof-breaking unit and the unit support are arranged in a line, and the rotation axes of the first telescopic component and the connecting component relative to the roof-breaking unit are perpendicular to the plane where the roof-breaking unit and the unit support are located.

3. The roof-breaking support for coal mining faces as described in claim 2, characterized in that: The roof-breaking unit includes a roof-breaking base, a slope roof assembly, a second telescopic member, and a third telescopic member. The slope roof assembly is located at the upper end of the second telescopic member, and the roof-breaking base is located at the lower end of the second telescopic member. The second telescopic member is hinged to the roof-breaking base, one end of the third telescopic member is hinged to the roof-breaking base, and the other end of the third telescopic member is hinged to the second telescopic member.

4. The roof-breaking support for coal mining faces as described in claim 3, characterized in that: The top-breaking unit includes protective plates, which are located on both sides of the top-breaking base.

5. The roof-breaking support for coal mining faces as described in claim 3, characterized in that: The roof-breaking unit includes a backing plate, which is fixed on the roof-breaking base. One end face of the connector contacts one side of the backing plate. The end face of the connector that contacts the backing plate is arc-shaped. The upper part of the backing plate is a straight plate, and the lower part of the backing plate is an arc shape that rolls with the end face of the connector.

6. The roof-breaking support for coal mining faces as described in claim 5, characterized in that: The top-breaking unit includes a baffle plate, which is located above the abutment plate.

7. The roof-breaking support for coal mining faces as described in claim 1, characterized in that: The unit support includes a top beam, a fourth telescopic member, and a support base. The top beam is located at the upper end of the fourth telescopic member, and the support base is located at the lower end of the fourth telescopic member.

8. The roof-breaking support for coal mining faces as described in claim 7, characterized in that: The linkage unit includes a first adapter, one end of which is hinged to the connector, and the other end of which is hinged to the support base. The rotation axis of the first adapter relative to the connector is parallel to the plane where the roof breaking unit and the unit support are located, and the rotation axis of the first adapter relative to the support base is perpendicular to the plane where the roof breaking unit and the unit support are located.

9. The roof-breaking support for coal mining faces as described in claim 7, characterized in that: The linkage unit includes a second adapter, one end of which is hinged to the first telescopic member, and the other end of which is hinged to the support base. The rotation axis of the second adapter relative to the first telescopic member is parallel to the plane where the roof-breaking unit and the unit support are located, and the rotation axis of the second adapter relative to the support base is perpendicular to the plane where the roof-breaking unit and the unit support are located.

10. The roof-breaking support for coal mining faces as described in claim 7, characterized in that: The unit bracket includes a clamp, and the fourth telescopic component is connected to the support base via the clamp.

Images