Supporting device for leveling underground roadway

Abstract

The invention relates to the technical field of coal mining, in particular to a supporting device for leveling an underground roadway, which comprises a movable base, a jacking assembly, a leveling assembly and two supporting assemblies, the bottom end of the jacking assembly is fixed to the movable base, the leveling assembly and the two supporting assemblies are supported on the top of the jacking assembly through the jacking assembly, the jacking assembly is in driving connection with the leveling assembly and the two supporting assemblies, and the two supporting assemblies are rotationally connected to the two sides of the leveling assembly. The device has the beneficial effects that the height and angle of the leveling assembly and the supporting assembly are adjusted through the jacking assembly, and the uneven part of the top wall of the roadway is accurately polished and trimmed. And supporting structures on the two sides of the leveling assembly are matched to reliably abut against the top wall of the roadway, and the problem that supporting is not firm due to poor flatness of the top wall of the roadway is effectively solved. And additional independent leveling operation is not needed, wall face finishing and stable supporting are directly achieved, the construction process is simplified, and the underground supporting construction efficiency, the structural stability and the operation safety are improved.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to a support device for leveling underground roadways. Background Technology

[0002] During the construction of support structures for underground roadways, support structures are typically used to provide compressive support to the inner walls of the roadways, thereby enhancing and reinforcing the structural compressive strength of the underground roadways. To ensure that the internal volume of the roadways meets the requirements of mining operations, the roof walls of the underground roadways need to be leveled before installing the support structures.

[0003] In existing underground roadway support construction, although the overall stability of the roadway can be improved by erecting underground protective supports, the unevenness of the roadway roof makes it difficult for the protective supports to fit tightly against the roadway roof. The resulting connection strength is insufficient, failing to achieve the desired support effect. Therefore, additional adjustments to the flatness of the underground roadway roof are required, increasing the construction steps and significantly reducing the ease of erecting the protective support structure. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a support device for leveling underground roadways, which solves the technical problem of discontinuous roof flatness in existing underground roadways.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides a support device for leveling underground roadways, comprising a movable base, a lifting assembly, a leveling assembly, and two support assemblies. The bottom end of the lifting assembly is fixed to the movable base, and the leveling assembly and the two support assemblies are supported on top of it by the lifting assembly. The lifting assembly is driven to connect to the leveling assembly and the two support assemblies respectively, and the two support assemblies are rotatably connected to both sides of the leveling assembly. The lifting assembly can drive the leveling assembly to move in the vertical direction, and the lifting assembly can drive the support assemblies to rotate around the leveling assembly, so as to facilitate the leveling assembly to grind and level the roadway roof, and the two support assemblies support the roadway roof.

[0009] Optionally, the lifting assembly includes two first lifting units and a second lifting unit; the two first lifting units are symmetrically distributed about the vertical plane of the leveling assembly, the top of the first lifting unit is slidably connected to the support assembly, and when the first lifting unit drives the support assembly to rotate around the leveling assembly, it is adapted to the support assembly to form a preset angle to support the tunnel roof; the top of the second lifting unit is fixedly connected to the bottom of the leveling assembly, so as to the second lifting unit drive the leveling assembly, and the leveling assembly grinds and levels the tunnel roof.

[0010] Optionally, the movable base includes two mounting slots, a pad, and a base; the pad is fixedly connected to the middle of the base, the two mounting slots are symmetrically arranged on both sides of the pad, two first lifting units are fixedly connected to the two mounting slots respectively, and a second lifting unit is fixedly connected to the top of the pad.

[0011] Optionally, the first lifting unit includes multiple first driving cylinders, a clamping plate, a connector, a reinforcing rod, and a connecting plate; the two ends of the reinforcing rod are fixedly connected to the connecting plate and the clamping plate respectively, the clamping plate is fixedly connected to the side of the connector, the connector is sleeved on the multiple first driving cylinders, and the multiple first driving cylinders are arranged in the front-rear direction; a first inclined platform and a second inclined platform are provided in the mounting groove, and the first inclined platform and the second inclined platform are fixedly connected to the left and right ends of the mounting groove respectively; the connecting plate is fixed to the first side of the first inclined platform, and the bottom end of the first driving cylinder is fixed to the first side of the second inclined platform.

[0012] Optionally, the angle between the first side of the first inclined platform and the horizontal plane is 60°-75°, the angle between the first side of the second inclined platform and the horizontal plane is 15°-30°, and the reinforcing rod is perpendicular to the first drive cylinder.

[0013] Optionally, the support assembly includes a push plate and multiple limiting grooves; the limiting grooves extend in the left-right direction, and the multiple limiting grooves are spaced apart in the front-back direction on the bottom surface of the push plate and correspond one-to-one with multiple first drive cylinders, so that the first drive cylinders and the limiting grooves are slidably connected in the extending direction, and one end of the push plate is rotatably connected to the leveling assembly.

[0014] Optionally, the mobile base also includes multiple counterweight plates, multiple counterweight pillows, and multiple rollers; the counterweight plates extend horizontally, the multiple counterweight plates are fixed to the front and rear sides of the base, the counterweight pillows are arranged along the left and right directions at the bottom of the base, and the multiple counterweight pillows are spaced apart along the front and rear directions, and the multiple rollers are connected to the bottom of the base.

[0015] Optionally, the counterweight plate has multiple threaded holes to facilitate connection to the ground.

[0016] Optionally, the second lifting unit includes multiple second drive cylinders and a reinforcing plate; the reinforcing plate is fixed to the upper surface of the pad, the bottom end of the second drive cylinder is fixed to the reinforcing plate, the top end of the second drive cylinder is fixed to the bottom end of the leveling assembly, and the multiple second drive cylinders are arranged in an array.

[0017] Optionally, the leveling assembly includes a lifting platform, a driver, and a leveling blade; the lifting platform is fixed to the top of the second drive cylinder, and a receiving groove extending vertically is provided in the center of the lifting platform; the driver is fixed in the receiving groove, and the output end of the driver is connected to the leveling blade; the top surface of the leveling blade has a cutting surface.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this invention are as follows: This invention provides a support device for leveling underground roadways, comprising a movable base, a lifting assembly, a leveling assembly, and two support assemblies. The bottom end of the lifting assembly is fixed to the movable base. The leveling assembly and the two support assemblies are supported on top of the lifting assembly, and the lifting assembly is driven to both the leveling assembly and the two support assemblies. The two support assemblies are rotatably connected to both sides of the leveling assembly. The lifting assembly can drive the leveling assembly to move vertically, and it can also drive the support assemblies to rotate around the leveling assembly, facilitating the leveling assembly's grinding and leveling of the roadway roof. The two support assemblies support the roadway roof. Compared to existing technologies, the lifting assembly allows for precise grinding and leveling of uneven areas on the roadway roof by adjusting the height and angle of the leveling and support assemblies. Combined with the reliable support structures on both sides of the leveling assembly against the roadway roof, this effectively solves the problem of unstable support caused by poor roadway roof flatness. No additional leveling work is required; wall surface repair and stable support can be achieved directly, simplifying the construction process and improving the efficiency, structural stability, and operational safety of underground support construction. Attached Figure Description

[0020] Figure 1 This is a front view of the support device for leveling underground roadways according to Embodiment 1 of the present invention;

[0021] Figure 2 for Figure 1 The diagram shows a structural schematic of a support device used for leveling underground roadways.

[0022] Figure 3 for Figure 2 A partial structural diagram of point A in the support device used for leveling underground roadways;

[0023] Figure 4 for Figure 1 The diagram shows a structural schematic of a support device used for leveling underground roadways from another angle.

[0024] Figure 5 for Figure 4 The diagram shows a partial structural schematic of point B in the support device used for leveling underground roadways.

[0025] Explanation of reference numerals in the attached figures

[0026] 1: Movable base; 11: Mounting slot; 12: Pad; 13: Base; 14: First inclined platform; 15: Second inclined platform; 16: Counterweight plate; 17: Counterweight pillow; 18: Roller;

[0027] 2: Lifting assembly; 21: First lifting unit; 211: First drive cylinder; 212: Clamping plate; 213: Connector; 214: Reinforcing rod; 215: Connecting plate; 22: Second lifting unit; 221: Second drive cylinder; 222: Reinforcing plate;

[0028] 3: Leveling assembly; 31: Lifting platform; 32: Driver; 33: Leveling blade;

[0029] 4: Support component; 41: Push plate; 42: Limiting groove. Detailed Implementation

[0030] 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," "lower," "left," "right," "front," and "rear" are used interchangeably. Figure 1 The orientation is used as a reference. Here, "up" refers to the direction closer to the leveling component, "down" refers to the direction closer to the moving base, and "left" refers to the direction facing... Figure 1 The direction to the left is "right". "Right" refers to facing the left. Figure 1 "To the right" refers to the direction, while "front" and "back" refer to directions perpendicular to the up / down and left / right directions, respectively, meaning facing... Figure 1 It is the direction perpendicular to the screen.

[0031] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0032] Example 1:

[0033] Reference Figures 1 to 5This embodiment proposes a support device for leveling underground roadways, used to level discontinuous roof surfaces in underground roadways. Specifically, the support device for leveling underground roadways in this embodiment includes a movable base 1, a lifting assembly 2, a leveling assembly 3, and two support assemblies 4, as detailed below.

[0034] In this embodiment, the movable base 1 can move and be positioned within the underground roadway. The lifting assembly 2 is fixedly connected to the movable base 1 by welding, screwing, or snap-fitting. The top of the lifting assembly 2 is used to support the leveling assembly 3 and the two support assemblies 4. The lifting assembly 2 is driven by the leveling assembly 3 and the two support assemblies 4, and can drive the leveling assembly 3 and the two support assemblies 4 individually or in concert.

[0035] The leveling component 3 is located on top of the lifting component 2 and is used to grind and level the tunnel roof. Two support components 4 are symmetrically arranged on both sides of the leveling component 3 and are connected to the leveling component 3 by a rotatable connection, allowing the support components 4 to pitch and rotate relative to the leveling component 3. While driving the leveling component 3 to move vertically, the lifting component 2 can also drive the support components 4 to pitch and rotate around the leveling component 3, thereby adjusting the angle and position of the support components 4.

[0036] In the non-operational state, the lifting component 2 is in a low position, and the leveling component 3 is also in a low position. The angle between the two support components 4 and the leveling component 3 is small, and the two support components 4 are tucked to both sides of the lifting component 2.

[0037] During operation, the jacking assembly 2 first drives the leveling assembly 3 to rise to the leveling position on the tunnel roof. Simultaneously, the jacking assembly 2 drives the two support assemblies 4 to rotate and unfold closer to the tunnel roof, so that the sides of the support assemblies 4 abut against and support the tunnel roof, enhancing the stability of the support device. The leveling assembly 3 then begins to grind the tunnel roof to eliminate uneven areas. By driving the leveling assembly 3 and the two support assemblies 4 separately through the jacking assembly 2, the leveling assembly 3 and the support assemblies 4 work together to achieve integrated leveling and support of the tunnel roof.

[0038] In summary, by adjusting the height and angle of the leveling component 3 and the support component 4 using the lifting component 2, uneven areas of the roadway roof can be precisely ground and repaired. Combined with the reliable support structures on both sides of the leveling component 3, this effectively solves the problem of unstable support caused by poor roadway roof flatness. No additional separate leveling work is required; wall repair and stable support are achieved directly, simplifying the construction process and improving the efficiency, structural stability, and operational safety of underground support construction.

[0039] Furthermore, the lifting assembly 2 includes two first lifting units 21 and a second lifting unit 22. The two first lifting units 21 are symmetrically distributed about the vertical plane of the leveling assembly 3. The bottom end of the first lifting unit 21 is fixed to the movable base 1 by welding, screwing, or snapping, and the top end of the first lifting unit 21 is slidably connected to the support assembly 4. The bottom end of the second lifting unit 22 is fixed to the movable base 1 by welding, screwing, or snapping, and the top end of the second lifting unit 22 is fixedly connected to the bottom end of the leveling assembly 3.

[0040] The first lifting unit 21 and the second lifting unit 22 are driven independently. The second lifting unit 22 drives the leveling component 3 to move vertically, which is used to grind and level the tunnel roof. Before the leveling component 3 starts operating, the first lifting unit 21 drives the support component 4 to move. Since the support component 4 is slidably connected to the top of the first lifting unit 21 and is rotatably connected to both sides of the leveling component 3, the support component 4 rotates around the leveling component 3 under the lifting force of the first lifting unit 21 until the support component 4 forms a preset angle to support the tunnel roof. Through the drive of the first lifting unit 21, the support component 4 can adapt to the tunnel roof at different angles and positions, achieving stable support.

[0041] Furthermore, the movable base 1 includes two mounting slots 11, a pad 12, and a base 13. The pad 12 is fixedly connected to the middle position of the base 13 by welding, screwing, or integral molding, and the two mounting slots 11 are symmetrically arranged on both sides of the pad 12. Two first lifting units 21 are fixedly connected to the two mounting slots 11 by welding, screwing, or snapping, respectively, so that the first lifting units 21 are positioned and fixed on the movable base 1. The second lifting unit 22 is fixedly connected to the top of the pad 12 by welding, screwing, or snapping, so that the second lifting unit 22 is located at the center position of the movable base 1, so as to facilitate the driving of the leveling assembly 3 for lifting operations.

[0042] Furthermore, the first lifting unit 21 includes multiple first driving cylinders 211, a clamping plate 212, a connecting member 213, a reinforcing rod 214, and a connecting plate 215. The two ends of the reinforcing rod 214 are fixedly connected to the connecting plate 215 and the clamping plate 212 respectively by welding, screwing, or snapping. The clamping plate 212 is fixedly connected to the side of the connecting member 213 by welding, screwing, or snapping. The connecting member 213 is sleeved onto the multiple first driving cylinders 211, which are arranged in a front-to-back direction. Thus, the connecting member 213 combines the multiple first driving cylinders 211 into a whole, and the clamping plate 212 and the connecting plate 215, along with the reinforcing rod 214, form a support frame, facilitating the reinforcing rod 214 to support the multiple first driving cylinders 211. It is understood that the first driving cylinders 211 are fixed and do not rotate.

[0043] The mounting groove 11 is provided with a first inclined platform 14 and a second inclined platform 15. The first inclined platform 14 and the second inclined platform 15 are fixedly connected to the left and right ends of the mounting groove 11 by welding, screwing, or snapping, respectively, with the first inclined platform 14 being away from the bottom end of the first drive cylinder 211. The connecting plate 215 is fixed to the first side of the first inclined platform 14 by welding, screwing, or snapping, so that one end of the first lifting unit 21 is fixed to the first inclined platform 14 through the connecting plate 215, and the first side of the first inclined platform 14 is an inclined surface exposed in the mounting groove 11. The bottom end of the first drive cylinder 211 is fixed to the first side of the second inclined platform 15 by welding, screwing, or snapping (the first side of the second inclined platform 15 is an inclined surface exposed in the mounting groove 11). The first side surfaces of the first inclined platform 14 and the second inclined platform 15 are both inclined surfaces, so that the first lifting unit 21 is in an inclined posture in the mounting groove 11, so that the support component 4 can be driven to rotate around the leveling component 3 to form a preset angle.

[0044] Specifically, the angle between the first side of the first inclined platform 14 and the horizontal plane is 60°-75°, and the angle between the first side of the second inclined platform 15 and the horizontal plane is 15°-30°. The bottom end of the first drive cylinder 211 is fixed to the first side of the second inclined platform 15, so that the first drive cylinder 211 is set in an inclined direction perpendicular to the first side of the second inclined platform 15. The connecting plate 215 is fixed to the first side of the first inclined platform 14, so that the connecting plate 215 is set in an inclined direction along the first side of the first inclined platform 14, thereby the reinforcing rod 214 is set in an inclined direction perpendicular to the first side of the first inclined platform 14. By setting the angle between the first inclined platform 14 and the second inclined platform 15, the first lifting unit 21 is tilted in the mounting groove 11, so that the drive support assembly 4 rotates around the leveling assembly 3 to form a preset angle. The reinforcing rod 214 is perpendicular to the first driving cylinder 211, so that the supporting direction of the reinforcing rod 214 on the first driving cylinder 211 is perpendicular to the driving direction of the first driving cylinder 211, thereby improving the stability of the first driving cylinder 211 during driving.

[0045] Furthermore, the support component 4 includes a pushing plate 41 and multiple limiting grooves 42. One end of the pushing plate 41 is rotatably connected to the leveling component 3, allowing the pushing plate 41 to rotate around the leveling component 3. Specifically, one end of the pushing plate 41 is rotatably connected to the leveling component 3 via a pin. Multiple limiting grooves 42 are disposed on the bottom surface of the pushing plate 41, extending in the left-right direction and spaced apart in the front-back direction. The number of limiting grooves 42 corresponds one-to-one with the multiple first driving cylinders 211 in the first lifting unit 21. The top end of the first driving cylinder 211 is slidably connected to the limiting groove 42, and the sliding direction is along the left-right extension direction of the limiting groove 42. When the first driving cylinder 211 drives the pushing plate 41 to move, the limiting groove 42 slides and supports the top end of the first driving cylinder 211, while the pushing plate 41 rotates around the connection point with the leveling component 3 until the pushing plate 41 forms a preset angle to support the top wall of the tunnel.

[0046] Furthermore, the movable base 1 also includes multiple counterweight plates 16, multiple counterweight pillows 17, and multiple rollers 18. The counterweight plates 16 extend horizontally, and are fixedly connected to the front and rear sides of the base 13 by welding, screwing, or snap-fitting. The counterweight pillows 17 are arranged along the entire length of the base 13 in the left-right direction, and are spaced apart in the front-back direction. By setting multiple counterweight plates 16 and multiple counterweight pillows 17, the center of gravity of the support device is lowered, improving the stability of the support device during operation and preventing swaying. The multiple rollers 18 are connected to the bottom of the base 13 to facilitate the movement of the movable base 1.

[0047] Furthermore, the second lifting unit 22 includes multiple second drive cylinders 221 and a reinforcing plate 222. The reinforcing plate 222 is fixedly connected to the upper surface of the pad 12 by welding, screwing, or snapping, etc., to disperse the influence of the driving force of the second drive cylinders 221 on the pad 12. The bottom ends of the multiple second drive cylinders 221 are fixedly connected to the reinforcing plate 222 by welding, screwing, or snapping, etc., and the top ends of the multiple second drive cylinders 221 are fixedly connected to the bottom end of the leveling assembly 3 by welding, screwing, or snapping, etc. The multiple second drive cylinders 221 are arranged in an array to provide lifting driving force to the leveling assembly 3 in a uniformly distributed manner, so that the leveling assembly 3 remains stable during the lifting process.

[0048] Furthermore, the leveling assembly 3 includes a lifting platform 31, a driver 32, and a leveling blade 33. The lifting platform 31 is fixed to the top of the second drive cylinder 221 by welding, screwing, or snapping, and is driven by the second drive cylinder 221 to achieve lifting and lowering movement. A receiving groove extending vertically is provided at the center of the lifting platform 31. The driver 32 is fixed in the receiving groove, and its output end is connected to the leveling blade 33. Specifically, the driver 32 is a motor, and its output end can drive the leveling blade 33 to rotate. The top surface of the leveling blade 33 has a cutting surface for grinding and leveling the tunnel roof. The driver 32 drives the leveling blade 33 to rotate, which, in conjunction with the lifting and lowering drive of the lifting platform 31 by the second drive cylinder 221, causes the cutting surface of the leveling blade 33 to act on the tunnel roof, achieving the leveling operation. It should be emphasized that the leveling cutter 33 includes an integrally formed cutter head and two cutter blades. The cutter head is shaped like a frustum, while the cutter blades are shaped like triangular prisms. During the rotation of the leveling cutter 33, the cutter head and cutter blades can cut away the top wall of the tunnel and smooth out the uneven parts of the tunnel top wall.

[0049] Example 2:

[0050] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the counterweight plate 16 in this embodiment is connected to the ground by having a threaded hole, as detailed below.

[0051] In this embodiment, the counterweight plate 16 has multiple threaded holes, which are arranged through the counterweight plate 16 along its thickness direction. These threaded holes are spaced apart on the counterweight plate 16 in the left-right direction to facilitate fixed connection with the ground via anchor bolts. When the movable base 1 moves to the working position, the anchor bolts pass through the threaded holes and are screwed into the roadway floor, locking the counterweight plate 16 to the ground and preventing displacement of the movable base 1 during leveling operations. The engagement of the threaded holes and the anchor bolts allows the counterweight plate 16 to provide static counterweight using its own weight, and also to form a rigid connection with the ground when needed, further enhancing the stability of the movable base 1 during the operation of the lifting assembly 2 and the leveling assembly 3. The detachable connection via the threaded holes facilitates the rapid positioning and retraction of the movable base 1, adapting to the transfer needs of different working positions in the underground roadway.

[0052] In the description of this invention, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] 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.

[0055] 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.

[0056] 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 support device for leveling underground roadways, characterized in that, It includes a movable base (1), a lifting assembly (2), a leveling assembly (3), and two support assemblies (4); The bottom end of the lifting component (2) is fixed on the movable base (1). The leveling component (3) and the two support components (4) are supported on the top of the lifting component (2). The lifting component (2) is driven to connect the leveling component (3) and the two support components (4) respectively. The two support components (4) are rotatably connected to both sides of the leveling component (3). The lifting component (2) can drive the leveling component (3) to move in the up and down direction, and the lifting component (2) can drive the support component (4) to rotate around the leveling component (3) so as to be suitable for the leveling component (3) to grind and level the roadway top wall, and the two support components (4) support the roadway top wall.

2. The support device for leveling underground roadways as described in claim 1, characterized in that: The lifting assembly (2) includes two first lifting units (21) and a second lifting unit (22); Two first lifting units (21) are symmetrically distributed about the vertical plane where the leveling component (3) is located. The top of the first lifting unit (21) is slidably connected to the support component (4). When the first lifting unit (21) drives the support component (4) to rotate around the leveling component (3), it is suitable for the support component (4) to form a preset angle to support the top wall of the roadway. The top end of the second lifting unit (22) is fixedly connected to the bottom end of the leveling component (3) so that the second lifting unit (22) can drive the leveling component (3) to grind and level the top wall of the tunnel.

3. The support device for leveling underground roadways as described in claim 2, characterized in that: The movable base (1) includes two mounting slots (11), a pad (12) and a base (13); The pad (12) is fixedly connected to the middle of the base (13), the two mounting slots (11) are symmetrically arranged on both sides of the pad (12), the two first lifting units (21) are fixedly connected to the two mounting slots (11) respectively, and the second lifting unit (22) is fixedly connected to the top of the pad (12).

4. The support device for leveling underground roadways as described in claim 3, characterized in that: The first lifting unit (21) includes multiple first drive cylinders (211), a clamping plate (212), a connector (213), a reinforcing rod (214), and a connecting plate (215); The two ends of the reinforcing rod (214) are fixedly connected to the connecting plate (215) and the clamping plate (212) respectively. The clamping plate (212) is fixedly connected to the side of the connecting member (213). The connecting member (213) is sleeved on a plurality of first driving cylinders (211). The plurality of first driving cylinders (211) are arranged in the front-back direction. The mounting groove (11) is provided with a first inclined platform (14) and a second inclined platform (15), and the first inclined platform (14) and the second inclined platform (15) are respectively fixedly connected to the left and right ends of the mounting groove (11). The connecting plate (215) is fixed to the first side of the first inclined platform (14), and the bottom end of the first driving cylinder (211) is fixed to the first side of the second inclined platform (15).

5. The support device for leveling underground roadways as described in claim 4, characterized in that: The angle between the first side of the first inclined platform (14) and the horizontal plane is 60°-75°, the angle between the first side of the second inclined platform (15) and the horizontal plane is 15°-30°, and the reinforcing rod (214) is perpendicular to the first driving cylinder (211).

6. The support device for leveling underground roadways as described in claim 4, characterized in that: The support component (4) includes a push plate (41) and a plurality of limiting grooves (42); the limiting grooves (42) extend in the left-right direction, and the plurality of limiting grooves (42) are spaced apart in the front-back direction on the bottom surface of the push plate (41) and correspond one-to-one with the plurality of first driving cylinders (211), so that the first driving cylinders (211) and the limiting grooves (42) are slidably connected in the extending direction, and one end of the push plate (41) is rotatably connected to the leveling component (3).

7. The support device for leveling underground roadways as described in claim 3, characterized in that: The mobile base (1) also includes multiple counterweight plates (16), multiple counterweight pillows (17), and multiple rollers (18). The counterweight plate (16) extends horizontally, and multiple counterweight plates (16) are fixed on the front and rear sides of the base (13). The counterweight pillow is arranged along the left and right direction at the bottom of the base (13), and multiple counterweight pillows are spaced apart along the front and rear direction. Multiple rollers (18) are connected to the bottom of the base (13).

8. The support device for leveling underground roadways as described in claim 7, characterized in that: The counterweight plate (16) has multiple threaded holes for connection to the ground.

9. The support device for leveling underground roadways as described in claim 3, characterized in that: The second lifting unit (22) includes a plurality of second drive cylinders (221) and a reinforcing plate (222); The reinforcing plate (222) is fixed to the upper surface of the pad (12), the bottom end of the second driving cylinder (221) is fixed to the reinforcing plate (222), the top end of the second driving cylinder (221) is fixed to the bottom end of the leveling component (3), and a plurality of the second driving cylinders (221) are arranged in an array.

10. The support device for leveling underground roadways as described in claim 9, characterized in that: The leveling assembly (3) includes a lifting platform (31), a driver (32), and a leveling blade (33). The lifting platform (31) is fixed to the top of the second driving cylinder (221), and the center of the lifting platform (31) has a receiving groove extending in the vertical direction. The driver (32) is fixed in the receiving groove, and the output end of the driver (32) is connected to the leveling knife (33). The top surface of the leveling knife (33) has a cutting surface.

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