Supporting device for gob-side entry retaining of ultrahigh roadway

Abstract

The utility model relates to the technical field of supporting devices for gob-side entry retaining, and discloses a supporting device for gob-side entry retaining of an ultrahigh roadway, which comprises a pair of first-level telescopic rods, a pair of second-level telescopic rods, a pair of connecting structures, a pair of second-level telescopic rods and a pair of connecting structures, the second-stage telescopic rod is fixed to the top of the connecting structure corresponding to the first-stage telescopic rod. The width adjusting structure is arranged between the two connecting structures; the supporting plate is used for supporting the top wall of the ultrahigh roadway through the secondary telescopic rod, the supports are fixed to the front end and the rear end of the connecting structure respectively, the pulleys are arranged at the bottoms of the supports, and after the primary telescopic rod is retracted, the pulleys are supported on the ground; and the control panel is arranged on one of the first-stage telescopic rods. Compared with the prior art, the adjustable supporting device has the advantages that the supporting width can be adjusted, the adjustable supporting device is matched with the widths of different ultrahigh roadways, and the adjustable supporting device can be moved through the pulleys and is more convenient to carry and recycle.

Description

Technical Field

[0001] The utility model relates to the technical field of support devices for gob-side tunnel retention, in particular to a support device for gob-side tunnel retention in a super-high tunnel. Background Art

[0002] Gob-side entry retention is a mining technique designed to maximize resource recovery and minimize coal loss by maintaining existing entryways along the edge of the goaf behind the mining face. This allows for the recovery of protective coal pillars typically left in traditional mining methods, maximizing resource recovery. This technique utilizes specialized support materials and techniques to re-support the drift from the previous section and retain it for use in the next section, achieving pillar-free mining. Gob-side entry retention not only helps improve coal resource recovery but also reduces roadway excavation, extending the mine's service life. It is an effective strategy for resource management and improving mine economic efficiency.

[0003] However, when retaining a tunnel along the goaf in a super-high tunnel, a support device that is too high will reduce stability, and if multiple support devices are combined and fixed, they cannot be adjusted according to the tunnel width, and are too heavy to be transported and moved. The installation and recovery of the support device along the goaf is time-consuming and labor-intensive, which is very troublesome and inconvenient. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the above technical difficulties and provide a support device for leaving a tunnel along the goaf of an ultra-high tunnel. The device is provided with two levels of telescopic rods, and four rods are provided on each level. When not supported, the device can be moved by a pulley, and a width adjustment structure is provided to adjust the distance between the telescopic rods in the left and right directions.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] A support device for gob-side retaining in a super-high tunnel comprises a first-stage telescopic rod and a second-stage telescopic rod, both of which are hydraulic telescopic rods, and further comprises:

[0007] The connecting structure is mirrored on the left and right sides and has a pair of first-level telescopic rods fixed at the bottom of the two connecting structures respectively, and the second-level telescopic rods corresponding to the first-level telescopic rods are fixed at the top of the connecting structure.

[0008] A width adjustment structure is provided between the two connecting structures;

[0009] The supporting plate supports the top wall of the super-high tunnel through the secondary telescopic rod.

[0010] Brackets and pulleys: A pair of brackets are fixed at the front and rear ends of the connecting structure, and a pulley is provided at the bottom. After the first-stage telescopic rod is retracted, the pulley is supported on the ground;

[0011] A control panel is arranged on one of the first-level telescopic rods.

[0012] As an improvement, the connection structure includes a mounting plate and support columns; the mounting plate is a plate structure arranged horizontally front to back, and a pair of support columns are arranged upper and lower, respectively, at both ends of the mounting plate, and the two mounting plates are connected and fixed together.

[0013] As an improvement, the width adjustment structure includes a slide groove, a sliding rod and a cross rod; a pair of slide grooves are respectively arranged on the opposite surfaces of the two mounting plates, and the two ends of the sliding rod are respectively slidably fitted in the two slide grooves, and the cross rod is a pair of rod body structures arranged in an X-shape and hinged to each other. There are multiple rods arranged between the two connecting structures, and the adjacent cross rods are hinged. The cross rods on the two most sides are respectively rotatably connected to a support column and the sliding rod on the same side, and there are two groups of cross rods arranged in upper and lower mirror images.

[0014] As an improvement, it also includes a fixed seat, a transmission block, a screw and a motor; the fixed seat is sleeved and fixed on one of the support columns, and the motor is fixed on the fixed seat, one end of the screw passes through the fixed seat and is connected to the drive shaft of the motor, and the other end is rotatably set on the bearing seat formed on the mounting plate, and the transmission block is sleeved and fixed on the corresponding sliding rod and cooperates with the screw thread.

[0015] The advantages of this utility model compared with the prior art are:

[0016] 1. The utility model is provided with two levels of telescopic rods, and each level is provided with four rods, which can support a higher height and the supporting effect is more stable.

[0017] 2. When the utility model is not supported, the whole is supported by the bracket and the pulley, and can be moved by the pulley, which is convenient for carrying and recovering the support device in the tunnel, reducing the use of manpower and carrying tools, and making the transportation and recovery process more convenient, labor-saving and safe.

[0018] 3. The utility model is provided with a width adjustment structure. When the telescopic rods on the left and right sides are connected, the distance between the telescopic rods in the left and right directions can be adjusted to adapt to various super-high lane widths within a certain range, which makes it more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0021] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 .

[0022] Figure 4 It is a structural schematic diagram of the width adjustment structure of the utility model.

[0023] Figure 5 It is a schematic diagram of the use of the present utility model.

[0024] As shown in the figure: 1. First-level telescopic rod; 2. Second-level telescopic rod; 3. Support foot; 4. U-shaped bracket; 5. Support plate; 6. Bracket; 7. Pulley; 8. Mounting plate; 9. Cross rod; 10. Control panel; 11. Support column; 12. Sliding rod; 13. Slide; 14. Fixed seat; 15. Transmission block; 16. Screw; 17. Bearing seat; 18. Motor. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] A support device for retaining lanes along the gob in a super-high tunnel, such as Figure 1 、 2 Shown, including:

[0028] Connecting structure and width adjustment structure; such as Figure 4As shown, the connection structure includes a mounting plate 8 and a support column 11; the mounting plate 8 is a plate structure arranged horizontally in the front and rear, and a pair of support columns 11 are arranged up and down, the two support columns 11 are respectively arranged at the front and rear ends of the mounting plate 8, and the two mounting plates 8 are connected and fixed together, the connection structure is mirrored in a pair on the left and right, and the two connection structures are connected by a width adjustment structure, the width adjustment structure includes a slide 13, a sliding rod 12, a cross rod 9, a fixing seat 14, a transmission block 15, a screw 16 and a motor 18; a pair of slide grooves 13 are respectively provided on the opposite surfaces of the two mounting plates 8, and the two ends of the sliding rod 12 are respectively slidably fitted in the two slide grooves 13, and the cross rod 9 is a pair The rod structure is arranged in an X-shape and hinged to each other. There are multiple rods arranged between the two connecting structures, and the adjacent cross rods 9 are hinged. The remaining two ends of the cross rods 9 on the two sides are respectively rotatably connected to a support column 11 and a sliding rod 12 on the same side (the support columns 11 correspond to each other), and the fixed seat 14 is sleeved and fixed on one of the support columns 11 (the support column 11 located at the front end of the right connecting structure), and the motor 18 is fixed on the fixed seat 14 (fixed on the front side of the fixed seat 14), one end of the screw 16 passes through the fixed seat 14 and is connected to the drive shaft of the motor 18, and the other end is rotatably set on the bearing seat 17 formed on the mounting plate 8 (as shown in FIG. Figure 4 As shown, the screw rod 16 is arranged in the right connecting structure and on the right side of the two support columns 11), the transmission block 15 is sleeved and fixed on the corresponding sliding rod 12, and is threadedly matched with the screw rod 16. After the motor 18 is started, the transmission block 15 drives the sliding rod 12 to move along the slide groove 13 (the sliding rod 12 and the support column 11 move relative to or opposite to each other), so that the two rod bodies of the cross rod rotate crosswise, and the distance between the two connecting structures changes.

[0029] The bracket 6 is a vertically arranged plate structure, and two pulleys 7 are provided at the bottom end, and the top is connected and fixed on the mounting plate 8, and a pair of (such as Figure 3 As shown), the first-stage telescopic rod 1 and the second-stage telescopic rod 2 are both hydraulic three-section telescopic rods, and as Figure 1As shown, two pairs of first-level telescopic rods 1 are respectively arranged at the bottom of the two connecting structures, and the top ends are connected and fixed to the lower mounting plate 8 corresponding to each support column 11. A disc-shaped supporting foot 3 is fixed to the bottom of the first-level telescopic rod 1, and is supported on the ground by the supporting foot 3. A control panel 10 is provided on one of the first-level telescopic rods 1 (the control panel 10 is fixed on the first-level telescopic rod 1 at the rear end of the right connecting structure, and is arranged on the oil cylinder of the first-level telescopic rod 1 toward the inner side of the support device). Four second-level telescopic rods 2 are arranged at the top of the connecting structure corresponding to the first-level telescopic rod 1, and the bottom ends are connected and fixed to the upper mounting plate 8 corresponding to each support column 11, and U-shaped brackets 4 are respectively provided on the top, the inner walls of which are adapted to the bottom of the support plate 5. The support plate 5 is arranged horizontally left and right, and the two ends are overlapped and fitted in a pair of U-shaped brackets 4, and the two support plates 5 support the top wall of the super-high tunnel under the action of the second-level telescopic rod 2.

[0030] The methods of using the first-level telescopic rod 1, the second-level telescopic rod 2 and the control panel 10 are all existing mature technologies in the relevant industry, and all the first-level telescopic rods 1, the second-level telescopic rods 2 and the motor 18 can be controlled through the control panel 10.

[0031] In the specific implementation of this embodiment:

[0032] Push the undeployed support device to the specified support position, start the motor 18 through the control panel 10 to rotate the screw 16, so that the connecting structures on both sides are separated by the width adjustment structure and move in opposite directions, stop after reaching the specified width, and adjust the support device to ensure that the support device is in the correct position, partially open the first-level telescopic rod 1, so that the bottom support foot 3 of the first-level telescopic rod 1 contacts the bottom surface, and the pulley 7 is suspended in the air, and the support plate 5 is placed in the U-shaped bracket 4 corresponding to the top of the second-level telescopic rod 2, and start the first-level telescopic rod 1 and the second-level telescopic rod 2 again through the control panel 10, so that the support plate 5 is in conflict with the top wall of the super-high tunnel, thereby supporting the super-high tunnel, and evenly arrange and support multiple support devices along the front and back to form an empty tunnel. At this time, one side of the support device is the construction surface for coal mining, and the other side is the filling area, where the filling material is poured for support.

[0033] After the construction surface is excavated for a certain distance, it is supported by support devices to form a new goaf-side tunnel. The support devices of the original goaf-side tunnel are dropped and recovered, and then the original goaf-side tunnel area is poured and filled.

[0034] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A support device for gob-side tunnel retaining in a super-high tunnel, comprising a first-stage telescopic rod (1) and a second-stage telescopic rod (2), both of which are hydraulic telescopic rods, characterized in that: Also includes: The connection structure is provided with a pair of mirror images on the left and right, and the two pairs of first-level telescopic rods (1) are respectively fixed on the bottom of the two connection structures, and the second-level telescopic rods (2) corresponding to the first-level telescopic rods (1) are fixed on the top of the connection structure; A width adjustment structure is provided between the two connecting structures; The supporting plate (5) supports the top wall of the super-high tunnel through the secondary telescopic rod (2); A pair of brackets (6) and a pulley (7), wherein the pair of brackets (6) are respectively arranged at the front and rear ends of the connection structure, and a pulley (7) is arranged at the bottom. After the first-stage telescopic rod (1) is retracted, the pulley (7) is supported on the ground; A control panel (10) is arranged on one of the first-level telescopic rods (1).

2. A support device for gob-side entry retaining in a super-high tunnel according to claim 1, characterized in that: The top of the secondary telescopic rod (2) is provided with a U-shaped bracket (4), and the inner wall is adapted to the bottom of the supporting plate (5). The supporting plate (5) is arranged horizontally on the left and right, and the two ends are respectively overlapped and matched in a pair of U-shaped brackets (4).

3. The support device for gob-side entry retaining in a super-high tunnel according to claim 1, characterized in that: The connection structure comprises a mounting plate (8) and support columns (11); the mounting plate (8) is a plate structure arranged horizontally front and back, and a pair of support columns (11) are arranged up and down, respectively, and the two support columns (11) are respectively arranged at the two ends of the mounting plate (8) and connect and fix the two mounting plates (8) together.

4. The support device for gob-side entry retaining in a super-high tunnel according to claim 3 is characterized in that: The width adjustment structure comprises a slide groove (13), a sliding rod (12) and a cross rod (9); a pair of slide grooves (13) are respectively arranged on opposite surfaces of the two mounting plates (8), and the two ends of the sliding rod (12) are respectively slidably fitted in the two slide grooves (13); the cross rod (9) is a pair of rod structures arranged in an X-shaped cross and hinged to each other, and a plurality of cross rods (9) are arranged between the two connecting structures, and adjacent cross rods (9) are hinged, and the cross rods (9) on the two most sides are respectively rotatably connected to a support column (11) and the sliding rod (12) on the same side.

5. The support device for gob-side entry retaining in a super-high tunnel according to claim 4, characterized in that: The invention also includes a fixing seat (14), a transmission block (15), a screw rod (16) and a motor (18); the fixing seat (14) is sleeved and fixed on one of the support columns (11), and the motor (18) is fixed on the fixing seat (14); one end of the screw rod (16) passes through the fixing seat (14) and is connected to the drive shaft of the motor (18); the other end is rotatably arranged on a bearing seat (17) formed on the mounting plate (8); the transmission block (15) is sleeved and fixed on the corresponding sliding rod (12) and is threadedly matched with the screw rod (16).

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