Expanding combined type air leakage isolation protection device for goaf protection coal pillar

Abstract

The utility model relates to the field of protection coal pillar isolation protection devices, in particular to a goaf protection coal pillar unfolding combined type air leakage isolation protection device which comprises a fixing strip and further comprises a protection plate, fixing ground anchors are arranged on the surface of the fixing strip, and the protection plate and the fixing strip are detachably connected through bolts. Positioning columns are fixedly installed on the upper end face of the protection plate, positioning holes are formed in the lower end face of the protection plate, clamping grooves are formed in the two ends of the fixing strip, and connecting holes are formed in the positions, located on the inner sides of the clamping grooves, of the surface of the fixing strip. The fixing strips are fixedly connected with the protection coal pillar through the fixing ground anchors, so that the fixing strips are attached to the surface of the coal pillar, then the protection plates are installed between the fixing strips, the positioning columns are clamped into the positioning holes, assembling of the multiple protection plates is facilitated, and air leakage gaps are formed between the protection plates on the upper side and the lower side. And a certain gap is formed between the protection plate and the surface of the coal pillar by matching the isolation strip, so that ventilation and exhaust are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of protective coal pillar isolation protection devices, in particular to a combined air leakage isolation protection device for protective coal pillars in goaf areas. Background Art

[0002] During coal mining, for safety reasons, the part of the face left unmined is called the coal pillar. Its main functions include protecting important buildings on the ground, reducing the mine pressure of the surrounding rock of the mining area or tunnel, preventing gas accumulation in the upper corners of the working face, and the development of the height of the overburden fracture zone in smaller mining areas. In order to prevent underground mining from damaging ground buildings and structures and ensure their safety and stability, the protective coal pillar in the goaf will be left with support structures and isolation protection structures for protection. The support structure increases the supporting force, while the isolation protection device isolates the surface of the coal pillar.

[0003] Existing goaf protection coal pillar isolation protection devices are mostly integrated structures, which are large in size and inconvenient to install and disassemble. At the same time, the overall isolation and fitting result in poor ventilation and pose certain safety hazards.

[0004] Therefore, in view of the problem that the existing goaf protection coal pillar isolation protection devices are mostly integrated structures, resulting in poor ventilation and certain safety hazards, a goaf protection coal pillar expansion combined leakage isolation protection device can be designed to achieve combined assembly, which is easy to disassemble and assemble. Utility Model Content

[0005] In order to overcome the problem that the existing goaf protection coal pillar isolation protection devices are mostly integrated structures, resulting in poor ventilation and certain safety hazards.

[0006] The technical solution of the utility model is: a combined air leakage isolation protection device is deployed for protecting coal pillars in the goaf, including a fixing bar and a protective plate. The surface of the fixing bar is provided with fixing anchor nails. The protective plate and the fixing bar are detachably connected by bolts. A positioning column is fixedly installed on the upper end face of the protective plate. A positioning hole is provided on the lower end face of the protective plate. An isolation strip is provided on the rear end face of the protective plate. A clamping groove is provided at both ends of the fixing bar. A connecting hole is provided on the surface of the fixing bar located on the inner side of the clamping groove.

[0007] Preferably, the fixing strips are connected and fixed to the protective coal pillars through fixing anchors so that the fixing strips fit on the surface of the coal pillars, and then protective plates are installed between the fixing strips, and the positioning columns are snapped into the positioning holes to facilitate the assembly of multiple protective plates, and to form air leakage gaps between the upper and lower protective plates, and to adapt the isolation strips so that a certain gap is formed between the protective plates and the surface of the coal pillars to facilitate ventilation and exhaust.

[0008] Preferably, two fixing bars are provided on both sides of the protective plate, and mounting holes are provided on the surface of the fixing bars, and the mounting holes are distributed at equal intervals.

[0009] Preferably, a nail cap is provided at the front end of the fixing anchor nail, the fixing anchor nail is sleeved with the mounting hole, and the outer diameter of the nail cap is larger than the inner diameter of the mounting hole.

[0010] Preferably, the protective plates are distributed at equal intervals, and both ends of the protective plates are respectively adapted to the snap-in grooves.

[0011] Preferably, the positioning posts are distributed at equal intervals, and one end of the positioning post away from the protective plate is slidably connected to the positioning hole.

[0012] Preferably, the isolation strips are distributed at equal intervals on the surface of the protective plate, the isolation strips are designed in a trapezoidal structure, and an exhaust slot is provided between the two isolation strips.

[0013] Preferably, the connection holes are distributed in four groups at equal intervals, with two connection holes in each group, and the connection holes are threadedly connected to the bolts.

[0014] Beneficial effects of the utility model:

[0015] The goaf area protective coal pillar deploys a combined air leakage isolation protection device, connects and fixes the fixing strips and the protective coal pillars through fixing anchor nails, so that the fixing strips fit on the surface of the coal pillars, and then installs protective plates between the fixing strips, and snaps the positioning posts into the positioning holes, which facilitates the assembly of multiple protective plates and forms air leakage gaps between the upper and lower protective plates. The isolation strips are adapted to form a certain gap between the protective plates and the coal pillar surfaces, which facilitates ventilation and exhaust. At the same time, the combination of multiple protective plates facilitates the disassembly and assembly of the isolation protection device, improves convenience, and ensures ventilation between the coal pillars and the outside world during isolation, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the utility model is shown as the combined air leakage isolation protection device for the goaf protection coal pillar. Figure 1 ;

[0017] Figure 2 The overall structure of the utility model of the combined air leakage isolation protection device for the goaf protection coal pillar is shown Figure 2 ;

[0018] Figure 3 Shown is a schematic diagram of the fixing strip structure of the combined air leakage isolation protection device for the goaf protection coal pillar of the utility model;

[0019] Figure 4 Shown is a schematic diagram of the protective plate structure of the combined air leakage isolation protection device for the goaf protection coal pillar of the present invention.

[0020] Explanation of the accompanying drawings: 1. Fixing bar; 11. Mounting hole; 2. Protective plate; 3. Fixing anchor; 31. Nail cap; 4. Positioning column; 5. Positioning hole; 6. Isolation bar; 7. Snap-in groove; 8. Connecting hole. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4 The utility model provides an embodiment: a combined air leakage isolation protection device for a goaf protection coal pillar, comprising a fixing bar 1 and a protection plate 2. The surface of the fixing bar 1 is provided with a fixing anchor 3. The protection plate 2 and the fixing bar 1 are detachably connected by bolts. A positioning column 4 is fixedly installed on the upper end surface of the protection plate 2. A positioning hole 5 is provided on the lower end surface of the protection plate 2. An isolation bar 6 is provided on the rear end surface of the protection plate 2. A clamping groove 7 is provided at both ends of the fixing bar 1. The protection plates 2 are evenly spaced. They are respectively adapted to the snap-in grooves 7. A connecting hole 8 is provided on the surface of the fixing bar 1 located on the inner side of the snap-in groove 7. The fixing bar 1 is connected and fixed to the protective coal pillar through the fixing anchor 3, so that the fixing bar 1 fits on the surface of the coal pillar. Then, the protective plate 2 is installed between the fixing bars 1, and the positioning column 4 is snapped into the positioning hole 5 to facilitate the assembly of multiple protective plates 2, and to form an air leakage gap between the protective plates 2 on the upper and lower sides. The isolation strip 6 is adapted to form a certain gap between the protective plate 2 and the surface of the coal pillar to facilitate ventilation and exhaust.

[0023] See also Figure 2 and Figure 3 In this embodiment, two fixing bars 1 are provided on both sides of the protective plate 2. The surface of the fixing bar 1 is provided with mounting holes 11, and the mounting holes 11 are distributed at equal intervals. The front end of the fixing anchor 3 is provided with a nail cap 31, and the fixing anchor 3 is sleeved with the mounting hole 11. The outer diameter of the nail cap 31 is larger than the inner diameter of the mounting hole 11. The fixing anchor 3 is installed in the mounting hole 11, and the fixing bar 1 and the coal pillar are connected and fixed, which facilitates the installation and fixation of the isolation protection device.

[0024] See also Figure 4 In this embodiment, the isolation strips 6 are distributed at equal intervals on the surface of the protective plate 2. The isolation strips 6 are designed in a trapezoidal structure. An exhaust slot is provided between the two isolation strips 6. There are four groups of connecting holes 8 distributed at equal intervals. Each group of connecting holes 8 is provided with two connecting holes. The connecting holes 8 are threadedly connected to the bolts. During installation, the two sides of the protective plate 2 are placed in the clamping grooves 7. The protective plate 2 is fixed by the connection of the bolts and the connecting holes 8, so that there is a certain gap between the protective plate 2 and the coal pillar to facilitate air leakage.

[0025] During work, the fixing bar 1 is connected and fixed to the protective coal pillar through the fixing anchor 3, so that the fixing bar 1 fits on the surface of the coal pillar, and then the protective plate 2 is installed between the fixing bars 1, and the positioning column 4 is snapped into the positioning hole 5, which facilitates the assembly of multiple protective plates 2, and forms air leakage gaps between the protective plates 2 on the upper and lower sides, and adapts the isolation strip 6 to form a certain gap between the protective plate 2 and the surface of the coal pillar, which is convenient for ventilation and exhaust. At the same time, the combination of multiple protective plates 2 facilitates the disassembly and assembly of the isolation protection device, improves convenience, and ensures the ventilation of the coal pillar and the outside world during isolation.

[0026] Through the above steps, the positioning column 4 is snapped into the positioning hole 5, which facilitates the assembly of multiple protective plates 2 and forms air leakage gaps between the protective plates 2 on the upper and lower sides. The isolation strips 6 are adapted to form a certain gap between the protective plates 2 and the surface of the coal pillar, which facilitates ventilation and exhaust, so as to solve the problem that the existing goaf protection coal pillar isolation protection devices are mostly integrated structures, resulting in poor ventilation and certain safety hazards.

Claims

1. A combined air leakage isolation and protection device for deploying a protective coal pillar in a goaf area, comprising a fixing bar (1), characterized in that: The invention also includes a protective plate (2), a fixing anchor (3) is provided on the surface of the fixing strip (1), the protective plate (2) and the fixing strip (1) are detachably connected by bolts, a positioning column (4) is fixedly installed on the upper end surface of the protective plate (2), a positioning hole (5) is provided on the lower end surface of the protective plate (2), an isolation strip (6) is provided on the rear end surface of the protective plate (2), a clamping groove (7) is provided at both ends of the fixing strip (1), and a connecting hole (8) is provided on the surface of the fixing strip (1) located inside the clamping groove (7).

2. The combined air leakage isolation protection device for deploying coal pillars in goaf areas according to claim 1 is characterized in that: Two fixing bars (1) are provided on both sides of the protective plate (2). Mounting holes (11) are provided on the surface of the fixing bars (1), and the mounting holes (11) are distributed at equal intervals.

3. The combined air leakage isolation protection device for deploying protective coal pillars in goaf areas according to claim 2 is characterized in that: A nail cap (31) is provided at the front end of the fixing anchor nail (3), the fixing anchor nail (3) and the mounting hole (11) are sleeved, and the outer diameter of the nail cap (31) is larger than the inner diameter of the mounting hole (11).

4. The combined air leakage isolation and protection device for deploying protective coal pillars in goaf areas according to claim 1 is characterized in that: The protective plates (2) are distributed at equal intervals, and both ends of the protective plates (2) are respectively adapted to the clamping grooves (7).

5. The combined air leakage isolation protection device for deploying protective coal pillars in goaf areas according to claim 1 is characterized in that: The positioning posts (4) are distributed at equal intervals, and one end of the positioning post (4) away from the protective plate (2) is slidably connected to the positioning hole (5).

6. The combined air leakage isolation protection device for deploying protective coal pillars in goaf areas according to claim 1 is characterized in that: The isolation strips (6) are located on the surface of the protective plate (2) and are distributed at equal intervals. The isolation strips (6) are designed in a trapezoidal structure, and an exhaust slot is provided between the two isolation strips (6).

7. The combined air leakage isolation protection device for deploying protective coal pillars in goaf areas according to claim 1 is characterized in that: The connection holes (8) are distributed in four groups at equal intervals, and each group of connection holes (8) is provided with two connection holes. The connection holes (8) are threadedly connected to the bolts.

Images