Coal mine tunnel roof supporting device

Abstract

The invention provides a coal mine roadway roof supporting device which comprises a base, a side supporting assembly and a top supporting assembly, the side supporting assembly comprises a first telescopic rod and a second telescopic rod which are oppositely arranged on the two sides of the base, and the first telescopic rod and the second telescopic rod are both rotationally connected with the base so as to abut against a bottom plate or a side wall of a roadway; the jacking assembly comprises a lifting mechanism and a supporting plate, and the lifting mechanism is used for driving the supporting plate to move so that the supporting plate can abut against a top plate of the roadway; the base further comprises a base plate and a plurality of threaded rods, a gradienter is arranged on the base plate, a plurality of threaded holes are formed in the base plate, the threaded rods penetrate through the threaded holes in a one-to-one correspondence mode, a supporting block is arranged at the bottom end of each threaded rod, and the threaded rods can move in the threaded holes, so that the supporting blocks abut against the roadway bottom plate to adjust the levelness of the base plate. According to the supporting device, the levelness of the base can be adjusted through the screws and the threaded holes while the roadway roof is supported, and the supporting stability can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and in particular to a coal mine roadway roof supporting device. Background Art

[0002] In coal mining, the roof of a coal seam is composed of a false roof, an immediate roof, and a pre-existing roof. The false roof is a thin, easily collapsed rock layer adjacent to the coal seam. The immediate roof, composed of easily collapsed mudstone and other rock layers, is categorized as unstable, moderately stable, stable, and hard. The pre-existing roof is a thick, hard rock layer. The roof of a coal mine roadway typically includes the immediate roof and pre-existing roof, and some coal seam roofs also include a false roof.

[0003] Most tunnel support technologies use fixed structures to support the tunnel roof. However, when the tunnel floor becomes uneven due to geological conditions or mining disturbances, the fixed structure cannot adjust the fixed angle or position to adapt to the bottom shape, resulting in insufficient contact and poor fixing stability, which can easily cause the support device to shift or even fail to support the roof. Furthermore, the fixed structure can only provide linear support in a single direction and cannot adjust the support direction or strength according to the actual angle of the roof base. This leads to insufficient support in local areas, making it difficult to effectively control roof subsidence or collapse, seriously threatening underground operation safety. Summary of the Invention

[0004] The present invention aims to at least partially address one of the technical problems in the related art. To this end, embodiments of the present invention provide a coal mine roadway roof support device that can simultaneously support the roadway roof and adjust the horizontality of the base using a screw and threaded holes, thereby improving support stability.

[0005] The present invention provides a coal mine roadway roof support device, which includes:

[0006] A base, the base being used to support the bottom plate of the roadway;

[0007] a side support assembly, the side support assembly comprising a first telescopic rod and a second telescopic rod, the first telescopic rod and the second telescopic rod being respectively disposed on opposite sides of the base, the first telescopic rod and the second telescopic rod being rotatably connected to the base to abut against the floor or side of the tunnel;

[0008] A top support assembly, the top support assembly comprising a lifting mechanism and a support plate, the two ends of the lifting mechanism being respectively connected to the base and the support plate, the lifting mechanism being used to drive the support plate to move so that the support plate abuts against the top plate of the tunnel;

[0009] The base also includes a seat plate and a plurality of threaded rods. The seat plate is provided with a spirit level and a plurality of threaded holes. The plurality of threaded rods are passed through the plurality of threaded holes in a one-to-one correspondence. The bottom end of each threaded rod is provided with a support block. The threaded rod is movable in the threaded hole so that the plurality of support blocks abut against the bottom plate of the tunnel to adjust the horizontality of the seat plate.

[0010] In summary, the coal mine tunnel roof support device provided by the embodiment of the present invention drives the support plate to rise through the lifting assembly, so that the support plate abuts against the tunnel roof, thereby supporting the tunnel roof; and the extension and contraction amount of each threaded rod in the corresponding threaded hole can be adjusted, so that at least part of the multiple support blocks abut against the tunnel bottom plate, so as to adjust the horizontality of the bottom plate, which helps to improve the stability of the support.

[0011] In some embodiments, at least one of the first telescopic rod and the second telescopic rod includes a sleeve rod, a movable rod and a fixed rod, the movable rod is inserted into the sleeve rod, a positioning hole is provided on the side wall of the sleeve rod, and a plurality of fixing holes are provided on the movable rod. The plurality of fixing rods are arranged at intervals along the length direction of the movable rod, and one end of the fixed rod passes through the positioning hole and the fixing hole to fix the sleeve rod and the movable rod.

[0012] In some embodiments, the fixing rod comprises a bolt or a fixing pin.

[0013] In some embodiments, the base also includes a support column arranged on the seat plate, the lifting mechanism is arranged above the support column, the first telescopic rod and the second telescopic rod both have fixed ends, and in the height direction of the support column, the fixed end of the first telescopic rod and the fixed end of the second telescopic rod are respectively connected to different height positions of the support column.

[0014] In some embodiments, at least two first telescopic rods are provided, and the fixed ends of the two first telescopic rods are respectively connected to different height positions of the support column, and the first telescopic rods are used to abut against the side of the tunnel.

[0015] In some embodiments, the support column is further provided with a lighting lamp.

[0016] In some embodiments, the lifting mechanism includes a hydraulic cylinder, a hydraulic rod and a controller, the support plate is arranged at the top of the hydraulic rod, the hydraulic cylinder is connected to the support column, and the hydraulic cylinder is coupled to the hydraulic rod and the controller respectively; the controller is arranged on the support column and is used to adjust the extension and contraction amount of the hydraulic rod relative to the hydraulic cylinder.

[0017] In some embodiments, a receiving cavity is provided at the top of the hydraulic rod, a ball head is provided at the middle of the support plate, and the ball head is rotatably disposed in the receiving cavity.

[0018] In some embodiments, the lifting mechanism further includes at least two third telescopic rods, both ends of the third telescopic rods are correspondingly connected to the support plate and the hydraulic rod, and the third telescopic rods are symmetrically arranged on opposite sides of the hydraulic rod.

[0019] In some embodiments, the top support assembly further includes a buffer pad, which is provided on a side of the support plate abutting against the tunnel top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a coal mine tunnel roof support device in one embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the internal structure of a coal mine tunnel roof support device in one embodiment of the present invention.

[0022] Figure 3 yes Figure 1 The diagram shown is a partial enlarged schematic diagram of the coal mine roadway roof support device at center A.

[0023] Figure 4 for Figure 2 The diagram shown is a partial enlarged schematic diagram of the coal mine roadway roof support device at point B in the middle.

[0024] Reference numerals: 100, coal mine roadway roof support device;

[0025] 10. Base; 11. Base plate; 111. Threaded hole; 12. Threaded rod; 13. Level; 14. Support block; 15. Support column; 151. First connecting portion; 152. Second connecting portion; 16. Lighting lamp;

[0026] 20. Side support assembly; 21. First telescopic rod; 211. Sleeve rod; 2111. Positioning hole; 212. Movable rod; 2121. Fixing hole; 213. Fixing rod; 214. Free end; 215. Plate; 216. Fixed end; 22. Second telescopic rod;

[0027] 30. Support assembly; 31. Lifting mechanism; 311. Hydraulic cylinder; 312. Hydraulic rod; 3121. Accommodating chamber; 313. Controller; 32. Support plate; 321. Ball head; 33. Third telescopic rod; 34. Buffer pad. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] When mining a coal mine, a tunnel must be dug out first. The coal mine tunnel roof support device 100 provided by the embodiment of the present invention is used to be fixed in the tunnel and supported between the bottom plate and the roof plate of the tunnel to facilitate the smooth development of coal mining. Figures 1 to 4 ,in, Figure 1 FIG. 1 is a schematic diagram of the three-dimensional structure of a coal mine roadway roof support device 100 in one embodiment of the present invention. Figure 2 FIG. 1 is a schematic diagram of the internal structure of a coal mine roadway roof support device 100 according to an embodiment of the present invention. Figure 3 for Figure 1 A partial enlarged schematic diagram of point A in the middle, Figure 4 for Figure 2 A partial enlarged schematic diagram of point B in the middle.

[0030] The coal mine tunnel roof support device 100 provided in an embodiment of the present invention includes a base 10, a side support assembly 20 and a top support assembly 30. The base 10 is used to support the bottom plate of the tunnel; the side support assembly 20 includes a first telescopic rod 21 and a second telescopic rod 22, and the first telescopic rod 21 and the second telescopic rod 22 are respectively arranged on opposite sides of the base 10. The first telescopic rod 21 and the second telescopic rod 22 are both rotatably connected to the base 10 to abut the bottom plate or side wall of the tunnel; the top support assembly 30 includes a lifting mechanism 31 and a support plate 32. The two ends of the lifting mechanism 31 are respectively connected to the base 10 and the support plate 32. The lifting mechanism 31 is used to drive the support plate 32 to move so that the support plate 32 abuts against the roof of the tunnel.

[0031] The base 10 also includes a seat plate 11 and a plurality of threaded rods 12. The seat plate 11 is provided with a spirit level 13 and a plurality of threaded holes 111. The plurality of threaded rods 12 are respectively passed through the plurality of threaded holes 111. The bottom end of each threaded rod 12 is provided with a support block 14. The threaded rod 12 is movable in the threaded hole 111 so that the plurality of support blocks 14 abut against the bottom plate of the tunnel to adjust the levelness of the seat plate 11.

[0032] The base 10 can be abutted against and supported by the tunnel floor via the base plate 11. A first telescopic rod 21 and a second telescopic rod 22 are rotatably connected to the base 10. The free end 214 of the first telescopic rod 21 can be fixed to the side of the tunnel, while the free end 214 of the second telescopic rod 22 can be fixed to the tunnel floor.

[0033] The lifting mechanism 31 is fixed on the base 10, and the support plate 32 is rotatably provided on the upper end of the lifting mechanism 31. The lifting mechanism 31 drives the support plate 32 to rise so that the support plate 32 abuts against the tunnel roof. By rotating the support plate 32, when the tunnel roof is inclined relative to the tunnel floor, the inclination angle of the support plate 32 can be adaptively changed automatically, so that the support plate 32 can fully contact and fit with the tunnel roof, thereby achieving a stable support effect.

[0034] Furthermore, during use of the coal mine roadway roof support device 100, the operator can adjust the levelness of the seat plate 11 by adjusting the extension and contraction of each threaded rod 12 in the corresponding threaded hole 111, so that at least a portion of the plurality of support blocks 14 abuts against the roadway floor. This can reduce the impact of uneven roadway floor levels on the levelness of the seat plate 11. The spirit level 13 is used to assist in determining relative levelness. In this embodiment, the spirit level 13 is a bubble level 13, but practical applications are not limited thereto.

[0035] In summary, the coal mine tunnel roof support device 100 provided in the embodiment of the present invention drives the support plate 32 to rise through the lifting assembly, so that the support plate 32 abuts against the tunnel roof, thereby supporting the tunnel roof; and the extension and contraction amount of each threaded rod 12 in the corresponding threaded hole 111 can be adjusted, so that at least part of the multiple support blocks 14 abuts against the tunnel bottom plate, so as to adjust the horizontality of the bottom plate, which helps to improve the stability of the support.

[0036] In some embodiments, at least one of the first telescopic rod 21 and the second telescopic rod 22 includes a sleeve rod 211, a movable rod 212 and a fixed rod 213. The movable rod 212 is inserted into the sleeve rod 211. A positioning hole 2111 is provided on the side wall of the sleeve rod 211. The movable rod 212 is provided with multiple fixing holes 2121. Multiple fixing rods 213 are arranged at intervals along the length direction of the movable rod 212. One end of the fixed rod 213 passes through the positioning hole 2111 and the fixing hole 2121 to fix the sleeve rod 211 and the movable rod 212.

[0037] Among them, such as Figures 1 to 3 As shown, the first telescopic rod 21 includes a sleeve rod 211 and a movable rod 212 inserted into the sleeve rod 211. A positioning hole 2111 is defined on the sidewall of the sleeve rod 211 and extends through the sleeve rod 211. A plurality of spaced-apart fixing holes 2121 are defined on the sidewall of the movable rod 212. One end of a fixing rod 213 passes through the positioning hole 2111 and the fixing hole 2121 to secure the sleeve rod 211 and the movable rod 212.

[0038] Optionally, the fixing rod 213 can be configured as a bolt or a fixing pin. One end of the bolt passes through the positioning hole 2111 and the fixing hole 2121 and is screwed with a nut to achieve the fixing of the sleeve rod 211 and the movable rod 212.

[0039] Of course, in some embodiments, the positioning hole 2111 may also be provided on the movable rod 212 , and the corresponding fixing hole 2121 may be provided on the sleeve rod 211 .

[0040] Furthermore, if Figure 1 and Figure 2 As shown, the free ends 214 of the first telescopic rod 21 and the second telescopic rod 22 are respectively rotatably connected to a plate 215. The plate 215 has a plurality of openings. A plurality of corresponding pins (not shown) are respectively passed through the plurality of openings and driven into the side walls and bottom (bottom plate) of the tunnel to achieve the fixing of the corresponding plates 215 to the side walls and bottom of the tunnel, but the actual application is not limited to this. Based on the above, when the side walls or bottom of the tunnel are uneven, the first telescopic rod 21 and the second telescopic rod 22 can also be used to stably fix the coal mine tunnel roof support device 100 to the side walls and bottom of the tunnel, which demonstrates the stability of the coal mine tunnel roof support device 100.

[0041] In some embodiments, the base 10 also includes a support column 15 provided on the seat plate 11, the lifting mechanism 31 is provided above the support column 15, the first telescopic rod 21 and the second telescopic rod 22 both have a fixed end 216, and in the height direction of the support column 15, the fixed end 216 of the first telescopic rod 21 and the fixed end 216 of the second telescopic rod 22 are respectively connected to different height positions of the support column 15.

[0042] Furthermore, the fixed end 216 of the first telescopic rod 21 is pivotally connected to the first connecting portion 151 of the support column 15, and the fixed end 216 of the second telescopic rod 22 is pivotally connected to the second connecting portion 152 of the support column 15. Figure 1 and Figure 2 The first connecting portion 151 and the second connecting portion 152 are respectively located at two different positions on the side wall of the support column 15, so that the base 10 is firmly fixed on the tunnel floor and the side wall.

[0043] Furthermore, there are at least two first telescopic rods 21, and the fixed ends 216 of the two first telescopic rods 21 are respectively connected to different height positions of the support column 15, and the first telescopic rods 21 are used to abut the side of the tunnel. That is, at least two first telescopic rods 21 are respectively rotatably connected to at least two first connecting parts 151 of the support column 15. Figure 1 and Figure 2 At least two first connecting parts 151 are arranged along the extension direction of the support column 15 (ie, the vertical direction or the height direction of the support column 15), so that the at least two first telescopic rods 21 can be further firmly fixed on the side of the tunnel.

[0044] In this embodiment, a lighting lamp 16 is further provided on the support column 15. The setting position of the lighting lamp 16 is different from the setting position of the first telescopic rod 21. That is, the lighting direction of the lighting lamp 16 is not towards the side of the tunnel, so as to better provide good lighting for the workers' construction area.

[0045] It should be noted that since there is basically water accumulation in the tunnels and the environment is relatively humid, lighting equipment is prone to problems such as short circuits. The lighting lamp 16 in this embodiment uses a plastic enclosed shell and is powered by a battery built into the coal mine tunnel roof support device 100 to ensure that mining work can proceed smoothly.

[0046] In some embodiments, the lifting mechanism 31 can be configured as a hydraulic lifting mechanism, which includes a hydraulic cylinder 311, a hydraulic rod 312, and a controller 313. The support plate 32 is disposed on the upper end of the hydraulic rod 312. The hydraulic cylinder 311 is connected to the support column 15, and the hydraulic cylinder 311 is coupled to the hydraulic rod 312 and the controller 313 respectively.

[0047] Controller 313 is mounted on support column 15. For example, controller 313 can be configured as a control button or joystick, and is used to adjust the extension and retraction of hydraulic rod 312 relative to hydraulic cylinder 311, thereby enabling hydraulic rod 312 to move vertically relative to base 10, thereby driving support plate 32 upward and into contact with the tunnel roof. Regarding the manufacturing process, controller 313 and hydraulic cylinder 311 can be coupled via an electrical control connection or other common coupling methods, which are common in the prior art and will not be further described.

[0048] Furthermore, if Figure 2 As shown, an accommodating cavity 3121 is provided at the upper end of the hydraulic rod 312 , and a ball head 321 is fixedly provided at the middle portion of the support plate 32 . The ball head 321 is rotatably accommodated in the accommodating cavity 3121 to achieve a rotating connection.

[0049] Furthermore, the lifting mechanism 31 includes at least two third telescopic rods 33, each of which is connected to the support plate 32 and the hydraulic rod 312 at its ends. The third telescopic rods 33 are symmetrically arranged on opposite sides of the hydraulic rod 312. In this way, the at least two third telescopic rods 33 can provide support forces for the support plate 32 in different directions. Before the support plate 32 abuts the tunnel roof, the support plate 32 can be oriented roughly toward the tunnel roof with the help of the supporting force, facilitating operation by workers.

[0050] Optionally, the third telescopic rod 33 can be formed by a sleeve rod 211 and a movable rod 212. However, unlike the first and second telescopic rods 21 and 22, the sleeve rod 211 and the movable rod 212 of the third telescopic rod 33 are secured by a damping structure. Of course, in some embodiments, the support plate 32 can also be pivotally connected to the lifting mechanism 31 solely by a ball head 321, with a damping structure provided between the ball head 321 and the accommodating cavity 3121 to provide support; however, practical applications are not limited to this.

[0051] In some embodiments, as Figure 1 and Figure 2 As shown, the support assembly 30 further includes a cushion 34, which is positioned on the side of the support plate 32 that contacts the tunnel roof. When the cushion 34 contacts the tunnel roof, it provides a cushioning effect, effectively preventing damage to the tunnel roof caused by the rigid support plate 32 during support. In this embodiment, the cushion 34 can be made of materials such as rubber and foam, but practical applications are not limited thereto.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0056] In the present invention, the terms "one embodiment," "some embodiments," etc., mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A coal mine roadway roof support device, characterized in that: include: A base, the base being used to support the bottom plate of the roadway; a side support assembly, the side support assembly comprising a first telescopic rod and a second telescopic rod, the first telescopic rod and the second telescopic rod being respectively disposed on opposite sides of the base, the first telescopic rod and the second telescopic rod being rotatably connected to the base to abut against the floor or side of the tunnel; A top support assembly, the top support assembly comprising a lifting mechanism and a support plate, the two ends of the lifting mechanism being respectively connected to the base and the support plate, the lifting mechanism being used to drive the support plate to move so that the support plate abuts against the top plate of the tunnel; The base also includes a seat plate and a plurality of threaded rods. The seat plate is provided with a spirit level and a plurality of threaded holes. The plurality of threaded rods are passed through the plurality of threaded holes in a one-to-one correspondence. The bottom end of each threaded rod is provided with a support block. The threaded rod is movable in the threaded hole so that the plurality of support blocks abut against the bottom plate of the tunnel to adjust the horizontality of the seat plate.

2. The coal mine roadway roof support device according to claim 1, characterized in that: At least one of the first telescopic rod and the second telescopic rod includes a sleeve rod, a movable rod and a fixed rod, the movable rod is inserted into the sleeve rod, a positioning hole is provided on the side wall of the sleeve rod, and a plurality of fixing holes are provided on the movable rod. The plurality of fixing rods are arranged at intervals along the length direction of the movable rod, and one end of the fixed rod passes through the positioning hole and the fixing hole to fix the sleeve rod and the movable rod.

3. The coal mine roadway roof support device according to claim 2, characterized in that: The fixing rod includes a bolt or a fixing pin.

4. The coal mine roadway roof support device according to claim 1, characterized in that: The base also includes a support column arranged on the seat plate, the lifting mechanism is arranged above the support column, the first telescopic rod and the second telescopic rod both have fixed ends, and in the height direction of the support column, the fixed end of the first telescopic rod and the fixed end of the second telescopic rod are respectively connected to the support column at different height positions.

5. The coal mine roadway roof support device according to claim 4, characterized in that: There are at least two first telescopic rods, and the fixed ends of the two first telescopic rods are respectively connected to different height positions of the support column. The first telescopic rods are used to abut against the side of the tunnel.

6. The coal mine roadway roof support device according to claim 4, characterized in that: The support column is also provided with a lighting lamp.

7. The coal mine roadway roof support device according to claim 4, characterized in that: The lifting mechanism includes a hydraulic cylinder, a hydraulic rod and a controller. The support plate is arranged at the top of the hydraulic rod. The hydraulic cylinder is connected to the support column. The hydraulic cylinder is coupled to the hydraulic rod and the controller respectively. The controller is arranged on the support column and is used to adjust the extension and contraction amount of the hydraulic rod relative to the hydraulic cylinder.

8. The coal mine roadway roof support device according to claim 7, characterized in that: The top of the hydraulic rod is provided with an accommodating cavity, the middle of the support plate is provided with a ball head, and the ball head is rotatably arranged in the accommodating cavity.

9. The coal mine roadway roof support device according to claim 8, characterized in that: The lifting mechanism further includes at least two third telescopic rods, two ends of the third telescopic rods are correspondingly connected to the support plate and the hydraulic rod, and the third telescopic rods are symmetrically arranged on opposite sides of the hydraulic rod.

10. The coal mine roadway roof support device according to claim 1, characterized in that: The top support assembly further includes a buffer pad, which is arranged on a side of the support plate abutting against the tunnel roof.

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