A lifting device for setting up a lifting device for setting up a lifting device for setting up a lifting device for setting up a lifting for setting up a lifting device for setting

Abstract

The present application relates to a kind of lifting device for coal mine underground supporting shed and its lifting device.Lifting device includes two lifting mechanisms located in the roadway both sides;The vertical orientation of the lifting mechanism jacking end is provided with the first roller around the steel wire rope and horizontal telescopic device;The lifting mechanism jacking end drives the first roller and horizontal telescopic device to move to the high place of roadway;The first end of the steel wire rope on two lifting mechanisms is connected to the both ends of long steel beam, after the steel wire rope hoists long steel beam to the high place of roadway, the driving end of the horizontal telescopic device on two lifting mechanisms is pressed to the both ends of long steel beam End face;And the first end of the steel wire rope on two lifting mechanisms can be connected to two single columns, the steel wire rope can hoist single column in horizontal state to vertical state, and the jacking end of single column supports long steel beam at the high place of roadway on the roof of roadway.Its beneficial effect is, instead of manpower to transport the long steel beam with relatively heavy weight and to stand up the single column with relatively heavy weight.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to a hoisting device and hoisting method for supporting and raising sheds in underground coal mines. Background Technology

[0002] Coal mining faces must increase the scope and strength of advance support at the upper and lower exits and in roadways. The advance support length for working faces in areas with low impact hazard must not be less than 70m; for working faces in thick coal seams with top coal caving and working faces in areas with medium or higher impact hazard, the advance support length must not be less than 120m. Advance support must meet the requirements for support strength and overall stability. Due to geological conditions, most mines use single-pillar supports with long steel beams for advance support. Specifically, the single-pillar supports the long steel beams against the roadway roof; this process is called support lifting. Because of the narrow roadway space and limited personnel in coal mining faces, the transportation of support lifting equipment mainly relies on manual labor to move the heavy single-pillar supports and long steel beams, resulting in high labor intensity and significant safety risks. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a lifting device for supporting and raising sheds in underground coal mines, which solves the technical problems of high labor intensity and high safety risks associated with the current manual handling of heavy single columns and long steel beams.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] In a first aspect, embodiments of the present invention provide a hoisting device for supporting a canopy in an underground coal mine, the canopy comprising a long steel beam and a single column, and the hoisting device comprising two hoisting mechanisms located on both sides of the roadway:

[0008] Each of the lifting mechanisms is equipped with a first roller wound with a steel wire rope and a horizontal expansion joint at its vertically oriented lifting end; the lifting end of the lifting mechanism can drive the first roller and the horizontal expansion joint to move upward to a higher position in the roadway.

[0009] The first ends of the wire ropes on the two lifting mechanisms can be connected to the two ends of the long steel beam respectively. After the wire ropes can lift the long steel beam to a high position in the roadway, the drive ends of the horizontal expansion joints on the two lifting mechanisms can extend and press against the end faces of the long steel beam.

[0010] Furthermore, the first ends of the steel wire ropes on the two lifting mechanisms can be connected to the two individual columns one by one. The steel wire ropes can lift the individual columns that are in a horizontal state to a vertical state. The top support ends of the individual columns located at both ends below the long steel beam can be extended and support the long steel beam located at the top of the roadway onto the roadway roof.

[0011] According to the present invention, the axial direction of the first roller is perpendicular to the extension direction of the drive end of the horizontal telescoping device.

[0012] According to the present invention, the lifting mechanism further includes a wire rope drum that can be fixed to the roadway floor, the second end of the wire rope being wound around the wire rope drum, and the wire rope drum being used to wind up and unwind the wire rope so as to lift the long steel beam to a high point in the roadway or lift the single column to a vertical position.

[0013] According to the present invention, the drive end of the horizontal expansion joint is fixedly connected to the pressure plate; the two pressure plates on the two lifting mechanisms are L-shaped opposite each other, and the two pressure plates can respectively abut against the end faces and side walls of the long steel beam.

[0014] According to the present invention, proximity sensors are provided on the opposite sidewalls of the two pressure plates, and the proximity sensors are used to monitor the pressure plates relative to the end face of the elongated steel beam.

[0015] According to the present invention, the lifting end of the lifting mechanism is fixedly connected to the fixing frame; the first roller and the horizontal telescopic device are both disposed on the fixing frame;

[0016] The lifting mechanism further includes a second roller disposed on the fixed frame and located on the horizontal side of the horizontal telescopic member. The second roller and the first roller are arranged axially parallel, and the steel wire rope at the second end of the first roller is wound around the second roller.

[0017] According to the present invention, it further includes two single-column support mechanisms corresponding one-to-one with the single column, each of the single-column support mechanisms including a first plate and a second plate perpendicular to each other;

[0018] The first plate can be inserted between the horizontal sidewall of the single column and the tunnel floor and can support the sidewall of the vertical single column, while the second plate can support the bottom of the vertical single column.

[0019] According to the present invention, a top support and telescopic rollers are provided on the second plate;

[0020] The vertically oriented drive end of the top support can extend to protrude beyond the bottom of the second plate or shorten to be above or flush with the bottom of the second plate; the telescopic roller can extend to protrude beyond the bottom of the second plate or retract into the second plate.

[0021] According to the present invention, the bottom of the second plate is provided with a first groove for accommodating the telescopic roller, and the side wall of the second plate is provided with an adjustment hole communicating with the first groove. The adjustment hole includes a vertical hole and a horizontal hole communicating with the bottom of the vertical hole.

[0022] The telescopic roller includes a roller frame and a wheel body disposed on the roller frame, and a vertically oriented elastic element is connected between the roller frame and the first groove;

[0023] An adjusting rod is provided on the roller frame, and the adjusting rod passes through the adjusting hole;

[0024] When the adjusting rod is located in the vertical hole, the telescopic roller is entirely housed in the first groove.

[0025] When the adjusting rod is located in the horizontal hole, the wheel extends out of the bottom of the second plate, and the elastic element extends or contracts.

[0026] Secondly, the present invention also provides a lifting method for the lifting device for supporting a hoisting frame in an underground coal mine, comprising the following steps:

[0027] S1: The lifting end of the lifting mechanism drives the first roller and the horizontal expansion joint to move upward to the height of the roadway;

[0028] S2: After the first ends of the wire ropes on the two lifting mechanisms are respectively connected to the two ends of the long steel beam, the wire ropes lift the long steel beam to a high position in the roadway;

[0029] S3: The drive ends of the horizontal telescopic devices on the two lifting mechanisms extend and press against the end faces of both ends of the long steel beam;

[0030] S4: After disconnecting the wire rope from the long steel beam and connecting the first ends of the wire ropes on the two lifting mechanisms to the two horizontal single columns, the wire ropes can lift the single column to a vertical position.

[0031] S5: Disconnect the steel wire rope and the single column. After the top support end of the single column located at both ends below the long steel beam extends and abuts against both ends of the long steel beam located at the high point of the roadway, the drive ends of the horizontal expansion joints on the two lifting mechanisms retract and leave the end faces of the long steel beam. Subsequently, the top support end of the single column continues to extend and supports the long steel beam against the top plate of the roadway.

[0032] (III) Beneficial Effects

[0033] The beneficial effects of this invention are as follows: The lifting device of this invention mechanically lifts long steel beams to a high position in the roadway and raises the horizontally positioned single columns transported to the underground roadway of the coal mine to a vertical position. The single columns then support the long steel beams against the roadway ceiling, replacing the manual handling of heavy long steel beams and the erection of heavy single columns. This reduces labor intensity, minimizes safety risks, and improves the efficiency and accuracy of the canopy erection. Furthermore, before the long steel beams are positioned at a high position in the roadway and supported by the single columns, the drive ends of two horizontal expansion joints press against the two end faces of the long steel beams to clamp them. This eliminates the need to pre-install the long steel beams on the roadway ceiling, improving the efficiency of the canopy erection and avoiding the safety risks associated with manual installation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the hoisting device for supporting and raising a canopy in an underground coal mine, according to the present invention, for lifting long steel beams.

[0035] Figure 2 This is a schematic diagram of the lifting device for supporting and raising a canopy in an underground coal mine, according to the present invention, lifting a single column that is in a horizontal state to a vertical state.

[0036] Figure 3 A schematic diagram of a support canopy formed by two individual columns and a long steel beam to support the roof of the roadway;

[0037] Figure 4 To enhance the three-dimensional schematic diagram of the mechanism;

[0038] Figure 5 This is a schematic diagram showing the position of a single column support mechanism and a single column in a horizontal position.

[0039] Figure 6 This is a schematic diagram showing the position of a single column support mechanism and a single column in a vertical position.

[0040] Figure 7 This is a schematic diagram of a single column support mechanism.

[0041] [Explanation of Labels in the Attached Image]

[0042] 1: Lifting mechanism; 11: First roller; 12: Horizontal expansion joint; 121: Pressure plate; 13: Steel wire rope; 14: Fixing frame; 141: Roller frame; 15: Second roller; 16: Steel wire rope drum; 17: Lifting main body;

[0043] 2: Single column support mechanism; 21: First plate; 22: Second plate; 221: Top support; 222: Telescopic roller; 2221: Roller frame; 2222: Wheel body; 2223: Elastic element; 2224: Adjusting rod; 223: First groove; 224: Adjusting hole; 2241: Vertical hole; 2242: Horizontal hole; 225: Second groove;

[0044] 3: Long steel beams;

[0045] 4: Single column;

[0046] 5: Sleeve. Detailed Implementation

[0047] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper" and "lower" refer to the orientation shown in Figure 1.

[0048] See Figure 1-7 This invention provides a hoisting device for supporting a canopy in an underground coal mine. The canopy includes a long steel beam 3 and a single column 4. The hoisting device includes two hoisting mechanisms 1 located on both sides of the roadway.

[0049] Each lifting mechanism 1 has a first roller 11 with a wire rope 13 wound around its vertical lifting end and a horizontal expansion joint 12. The lifting end of the lifting mechanism 1 can drive the first roller 11 and the horizontal expansion joint 12 to move upward to a higher position in the roadway. The first ends of the wire ropes 13 on the two lifting mechanisms 1 can be connected to the two ends of the long steel beam 3 respectively. After the wire ropes 13 lift the long steel beam 3 to a higher position in the roadway, the driving ends of the horizontal expansion joints 12 on the two lifting mechanisms 1 can extend and press against the end faces of the long steel beam 3. Furthermore, the first ends of the wire ropes 13 on the two lifting mechanisms 1 can be connected to two individual columns 4 one-to-one. The wire ropes 13 can lift the individual columns 4 from a horizontal position to a vertical position, thus erecting the individual columns 4. The single column 4 is a hydraulic cylinder. The top support ends of the two single columns 4 located at both ends below the long steel beam 3 can extend and support the two ends of the long steel beam 3 located at the top of the roadway onto the roadway roof, so that the two single columns 4 and the long steel beam 3 form a support canopy for supporting the roadway roof.

[0050] Specifically, the hoisting method for a hoisting device used for supporting a canopy in underground coal mines includes the following steps:

[0051] S1: The lifting end of the lifting mechanism 1 drives the first roller 11 and the horizontal expansion joint 12 to move upward to the high point of the roadway;

[0052] S2: After the first ends of the wire ropes 13 on the two lifting mechanisms 1 can be connected to the two ends of the long steel beam 3 respectively, the wire ropes 13 will lift the long steel beam 3 to a high place in the roadway.

[0053] S3: The driving ends of the horizontal expansion joints 12 on the two lifting mechanisms 1 can extend and press against the end faces of the long steel beam 3.

[0054] S4: After disconnecting the wire rope 13 from the long steel beam 3 and connecting the first ends of the wire ropes 13 on the two lifting mechanisms 1 to the two horizontal single columns 4, the wire rope 13 can lift the single column 4 to a vertical position.

[0055] S5: Disconnect the steel wire rope 13 and the single column 4. After the top support end of the single column 4 located at both ends below the long steel beam 3 extends and abuts against both ends of the long steel beam 3 located at the high point of the roadway, the drive end of the horizontal expansion joint 12 on the two lifting mechanisms 1 retracts and leaves the end faces of both ends of the long steel beam 3. Subsequently, the top support end of the single column 4 continues to extend and supports the long steel beam 3 against the top plate of the roadway.

[0056] The lifting device of this invention mechanically lifts the long steel beam 3 to a high position in the roadway via the lifting mechanism 1, and lifts the horizontally positioned single column 4 transported to the underground roadway of the coal mine to a vertical position. The single column 4 then supports the long steel beam 3 against the roadway ceiling. This replaces the manual handling of the heavy long steel beam 3 and the erection of the heavy single column 4, reducing labor intensity, minimizing safety risks, and improving the efficiency and accuracy of the support structure. Furthermore, before the long steel beam 3 is positioned at a high position in the roadway and supported by the single column 4, the driving ends of two horizontal expansion joints 12 press against the two end faces of the long steel beam 3 to clamp it. This eliminates the need to pre-install the long steel beam 3 on the roadway ceiling, improving the efficiency of the support structure and avoiding the safety risks associated with manual installation.

[0057] Furthermore, to facilitate the connection between the long steel beam 3 and the wire rope 13, sleeves 5 are fitted at both ends of the long steel beam 3, and the wire rope 13 is connected by the sleeves 5.

[0058] The sleeve 5 includes two parts symmetrically arranged relative to their axes. Connecting lugs are provided on the two parts. After the two parts are spliced ​​together, bolts are passed through the connecting lugs to form a detachable connection for the sleeve 5, so as to facilitate the loading and unloading of the sleeve 5 and the long steel beam 3.

[0059] Furthermore, the drive end of the horizontal expansion joint 12 is fixedly connected to the pressure plate 121.

[0060] The two pressure plates 121 on the two lifting mechanisms 1 are L-shaped and can respectively abut against the end faces and side walls of the long steel beam 3, so that the two pressure plates 121 can stably clamp the two ends of the long steel beam 3.

[0061] Furthermore, proximity sensors are provided on the opposite sidewalls of the two pressure plates 121. The proximity sensors are used to monitor the pressure plates 121 relative to the end faces of the long steel beam, so that the pressure plates 121 are precisely clamped at both ends of the long steel beam 3.

[0062] Specifically, the horizontal telescopic device 12 is an electric telescopic rod or a hydraulic cylinder.

[0063] Furthermore, the axial direction of the first roller 11 is perpendicular to the extension direction of the drive end of the horizontal expansion joint 12, so that the drive end of the horizontal expansion joint 12 can correspond to the end face of the long steel beam 3 lifted by the first end of the wire rope 13.

[0064] Furthermore, the lifting mechanism 1 includes a lifting body 17, and the lifting end of the lifting body 17 is fixedly connected to a fixing frame 14. The first roller 11 and the horizontal expansion joint 12 are both mounted on the fixing frame 14.

[0065] Specifically, the first roller 11 is fixed to the fixed frame 14 by the roller frame 141.

[0066] Specifically, the lifting body 17 is a hydraulic cylinder.

[0067] Preferably, the lifting mechanism 1 further includes a second roller 15 disposed on the roller frame 141 and located on the horizontal side of the horizontal expansion joint 12. The second roller 15 and the first roller 11 are arranged axially parallel. The steel wire rope 13 at the second end of the first roller 11 is wound around the second roller 15 to avoid interference between the second end of the steel wire rope 13 and the horizontal expansion joint 12.

[0068] Furthermore, the lifting mechanism 1 also includes a wire rope drum 16 that can be fixed to the roadway floor. The second end of the wire rope 13 is wound around the wire rope drum 16. The wire rope drum 16 is used to wind up and unwind the wire rope 13 so as to lift the long steel beam 3 to a high place in the roadway or lift the single column 4 to a vertical position.

[0069] Specifically, the wire rope drum 16 is fixedly connected to the drive end of the drive motor, and the drive motor drives the wire rope drum 16 to rotate forward or reverse to wind up or unwind the wire rope 13.

[0070] Furthermore, the lifting device also includes two single-column support mechanisms 2, which correspond one-to-one with the single column 4 and are used to assist in keeping the single column 4 in a vertical state.

[0071] Each individual column support mechanism 2 includes a first plate 21 and a second plate 22 that are perpendicular to each other. The first plate 21 can be inserted between the side wall of the horizontal individual column 4 and the tunnel floor and can support the side wall of the vertical individual column 4. The second plate 22 can support the bottom of the vertical individual column 4.

[0072] In use, the first plate 21 is first inserted between the side wall of the horizontal single column 4 and the roadway floor. After the lifting mechanism 1 lifts the horizontal single column 4 to a vertical position through the wire rope 13, the first plate 21 of the single column support mechanism 2 is then vertically oriented and supports the side wall of the single column 4, and the second plate 22 is then horizontally oriented and supports the bottom of the single column 4, so as to keep the single column 4 in a vertical position and avoid the single column 4 tilting, which would cause it to be unable to stably support the long steel beam 3.

[0073] Furthermore, a top support 221 and a telescopic roller 222 are provided on the second plate 22.

[0074] The vertically oriented drive end of the top support 221 can extend to protrude beyond the bottom of the second plate 22 or shorten to be above or flush with the bottom of the second plate 22. The telescopic roller 222 can extend to protrude beyond the bottom of the second plate 22 or retract into the second plate 22.

[0075] In the initial state, the top support 221 is higher than or flush with the bottom of the second plate 22, and the telescopic roller 222 is retracted into the second plate 22. When the single column 4 is in a vertical state, with the first plate 21 supporting the side wall of the single column 4 and the second plate 22 supporting the bottom of the single column 4: firstly, the top support 221 extends and protrudes from the bottom of the second plate 22 to support the tunnel floor, so that the second plate 22 is detached from the tunnel floor. Subsequently, the telescopic roller 222 extends and protrudes from the bottom of the second plate 22 and abuts against the tunnel floor. Then, the top support 221 retracts to be higher than or flush with the bottom of the second plate 22 to detach from the tunnel floor. At this time, it can push the single column support mechanism 2 to move the single column 4 to below the long steel beam 3 located at the high point of the tunnel, avoiding manual movement, reducing labor intensity and safety risks. Subsequently, the top support 221 extends again to support the tunnel floor, thereby causing the second plate 22 to detach from the tunnel floor, and the telescopic roller 222 retracts back into the second plate 22. Then, the top support 221 shortens again, and the bottom of the single column 4 is supported by the second plate 22.

[0076] Therefore, the single column support mechanism 2 can support the single column 4 and move the single column 4 to the bottom of the long steel beam 3 located at the top of the roadway.

[0077] Specifically, the bottom of the second plate 22 is provided with a first groove 223 for accommodating the telescopic roller 222. An adjustment hole 224 communicating with the first groove 223 is provided on the side wall of the second plate 22. The adjustment hole 224 includes a vertical hole 2241 and a horizontal hole 2242 communicating with the bottom of the vertical hole 2241. The telescopic roller 222 includes a roller frame 2221 and a wheel body 2222 mounted on the roller frame 2221. A vertically oriented elastic element 2223 connects the roller frame 2221 and the first groove 223. An adjustment rod 2224 is provided on the roller frame 2221, and the adjustment rod 2224 passes through the adjustment hole 224.

[0078] When the adjusting rod 2224 is located in the vertical hole 2241, the telescopic roller 222 is completely housed in the first groove 223;

[0079] When the adjusting rod 2224 is located in the horizontal hole 2242, the wheel body 2222 extends out of the bottom of the second plate 22, and the elastic element 2223 extends or contracts.

[0080] When the adjusting rod 2224 moves from the horizontal hole 2242 to the vertical hole 2241, the elastic element 2223 rebounds and drives the adjusting rod 2224 to move upward to abut the top wall of the vertical hole 2241, so that the telescopic roller 222 is completely housed in the first groove 223.

[0081] Therefore, by switching the adjusting rod 2224 between the vertical hole 2241 and the horizontal hole 2242, the telescopic roller 222 can be conveniently adjusted for extension and retraction. Its structure is simple and easy to operate.

[0082] Preferably, the number of telescopic rollers 222 is one or more, which can be determined according to the weight of the single column 4 to be supported.

[0083] Specifically, the number of top support members 221 is two or more, and top support members 221 are provided at both ends of the second plate 22 so that when the top support members 221 at both ends extend and protrude from the bottom of the second plate 22, the second plate 22 can be completely separated from the roadway floor plate.

[0084] More specifically, a top support 221 located at the end of the second plate 22 away from the first plate 21 is disposed on the side wall of the second plate 22. A top support 221 located at the end of the second plate 22 closer to the first plate 21 is disposed within a second groove 225 formed at the bottom of the second plate 22. Specifically,

[0085] More specifically, the top support 221 includes a hydraulic cylinder mounted on the second plate 22 via a flange and a cylinder connected to the drive end of the hydraulic cylinder. The hydraulic cylinder drives the cylinder to extend or shorten relative to the second plate 22, and the cylinder supports the tunnel floor.

[0086] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0087] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0088] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hoisting device for supporting a canopy in an underground coal mine, the canopy comprising a long steel beam (3) and a single column (4), characterized in that, The lifting device includes two lifting mechanisms (1) located on both sides of the roadway. Each of the lifting mechanisms (1) is provided with a first roller (11) with a steel wire rope (13) wound around it and a horizontal expansion joint (12) at its vertically oriented lifting end; the lifting end of the lifting mechanism (1) can drive the first roller (11) and the horizontal expansion joint (12) to move up to the height of the roadway; The first ends of the wire ropes (13) on the two lifting mechanisms (1) can be connected to the two ends of the long steel beam (3) respectively. After the wire ropes (13) can lift the long steel beam (3) to a high place in the roadway, the driving ends of the horizontal expansion joints (12) on the two lifting mechanisms (1) can extend and press against the two end faces of the long steel beam (3). Furthermore, the first ends of the steel wire ropes (13) on the two lifting mechanisms (1) can be connected to the two individual columns (4) one by one. The steel wire ropes (13) can lift the individual column (4) in the horizontal state to the vertical state. The top support ends of the individual columns (4) located at both ends below the long steel beam (3) can be extended and support the long steel beam (3) located at the top of the roadway on the roadway roof. The driving end of the horizontal expansion joint (12) is fixedly connected to the pressure plate (121); the two pressure plates (121) on the two lifting mechanisms (1) are L-shaped opposite each other, and the two pressure plates (121) can respectively abut against the end faces and side walls of the long steel beam (3); Proximity sensors are provided on the opposite sidewalls of the two pressure plates (121), and the proximity sensors are used to monitor the pressure plates (121) relative to the end face of the long steel beam (3); It also includes two single column support mechanisms (2) that correspond one-to-one with the single column (4), each of the single column support mechanisms (2) including a first plate (21) and a second plate (22) that are perpendicular to each other. The second plate (22) is provided with a top support (221) and a telescopic roller (222).

2. The hoisting device for supporting and lifting sheds in underground coal mines as described in claim 1, characterized in that, The axial direction of the first roller (11) is perpendicular to the extension direction of the drive end of the horizontal telescoping device (12).

3. The hoisting device for supporting and lifting sheds in underground coal mines as described in claim 1, characterized in that, The lifting mechanism (1) also includes a wire rope drum (16) that can be fixed to the roadway floor. The second end of the wire rope (13) is wound around the wire rope drum (16). The wire rope drum (16) is used to wind up and unwind the wire rope (13) so as to lift the long steel beam (3) to a high place in the roadway or lift the single column (4) to a vertical position.

4. The hoisting device for supporting and lifting sheds in underground coal mines as described in claim 1, characterized in that, The lifting end of the lifting mechanism (1) is fixedly connected to the fixing frame (14); the first roller (11) and the horizontal telescopic device (12) are both mounted on the fixing frame (14); The lifting mechanism (1) further includes a second roller (15) disposed on the fixed frame (14) and located on the horizontal side of the horizontal telescopic device (12). The second roller (15) and the first roller (11) are arranged axially parallel, and the steel wire rope (13) at the second end of the first roller (11) is wound around the second roller (15).

5. The hoisting device for supporting and lifting sheds in underground coal mines as described in claim 1, characterized in that, The first plate (21) can be inserted between the side wall of the horizontally positioned single column (4) and the roadway floor and can support the side wall of the vertically positioned single column (4). The second plate (22) can support the bottom of the vertically positioned single column (4).

6. The hoisting device for supporting and lifting sheds in underground coal mines as described in claim 5, characterized in that, The vertically oriented drive end of the top support (221) can extend to protrude from the bottom of the second plate (22) or shorten to be above or flush with the bottom of the second plate (22); the telescopic roller (222) can extend to protrude from the bottom of the second plate (22) or retract into the second plate (22).

7. The hoisting device for supporting and lifting sheds in underground coal mines as described in claim 6, characterized in that, The bottom of the second plate (22) is provided with a first groove (223) for accommodating the telescopic roller (222), and the side wall of the second plate (22) is provided with an adjustment hole (224) communicating with the first groove (223). The adjustment hole (224) includes a vertical hole (2241) and a horizontal hole (2242) communicating with the bottom of the vertical hole (2241). The telescopic roller (222) includes a roller frame (2221) and a wheel body (2222) disposed on the roller frame (2221). A vertically oriented elastic member (2223) is connected between the roller frame (2221) and the first groove (223). An adjusting rod (2224) is provided on the roller frame (2221), and the adjusting rod (2224) passes through the adjusting hole (224); When the adjusting rod (2224) is located in the vertical hole (2241), the telescopic roller (222) is completely housed in the first groove (223); When the adjusting rod (2224) is located in the horizontal hole (2242), the wheel (2222) extends out of the bottom of the second plate (22), and the elastic element (2223) extends or contracts.

8. A hoisting method for a hoisting device for supporting a hoisting frame in an underground coal mine, as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: The lifting end of the lifting mechanism (1) drives the first roller (11) and the horizontal expansion joint (12) to move up to the height of the roadway; S2: After the first ends of the wire ropes (13) on the two lifting mechanisms (1) are respectively connected to the two ends of the long steel beam (3), the wire ropes (13) lift the long steel beam (3) to the high point of the roadway; S3: The drive ends of the horizontal telescoping devices (12) on the two lifting mechanisms (1) extend and press against the end faces of the two ends of the long steel beam (3); S4: After disconnecting the wire rope (13) from the long steel beam (3) and connecting the first ends of the wire rope (13) on the two lifting mechanisms (1) to the two horizontal single columns (4), the wire rope (13) can lift the single column (4) to a vertical position. S5: Disconnect the steel wire rope (13) and the single column (4). After the top support end of the single column (4) located at both ends below the long steel beam (3) extends and abuts against both ends of the long steel beam (3) located at the high point of the roadway, the driving ends of the horizontal expansion joints (12) on the two lifting mechanisms (1) retract and leave the end faces of both ends of the long steel beam (3). Subsequently, the top support end of the single column (4) continues to extend and supports the long steel beam (3) against the top plate of the roadway.

Images