Rapid temporary support folding device for coal mine roadway driving working face

Abstract

The utility model discloses a coal mine roadway driving face rapid temporary support folding device which comprises a connecting buckle, fixing lapping lugs, rotating shaft grooves, a connecting rod, reserved screw holes, a lifting screw rod, a fixing threaded sleeve and a fixing base. The periphery of the connecting buckle is integrally provided with two fixing lapping lugs, and each fixing lapping lug is provided with one rotating shaft groove; connecting rods are installed in the fixing lap lugs on the periphery of the connecting buckles through rotating shafts, the connecting buckles are installed at the tail ends of the connecting rods in the same mode, and therefore the protective net capable of being folded and unfolded is formed, reserved screw holes are formed in the centers of the connecting buckles, and the connecting buckles on the periphery of the protective net are installed on the fixing threaded sleeve and the fixing base through lifting screw rods. The height is adjusted to support the top plate, the connecting buckles can be directly connected with the top of a roadway through fixing anchor rods, and a foldable protective net is formed through rotating shaft connection to facilitate transportation and installation; rapid temporary supporting is achieved through the lifting screw rod, and the protecting net can be converted into a part of permanent supporting through the fixing anchor rod to avoid secondary dismantling.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roadway construction, and in particular to a rapid temporary support folding device for coal mine roadway excavation faces. Background Technology

[0002] Coal mine roadway excavation refers to the core operation of excavating tunnels underground in coal mines. Its technical methods, equipment application, and safety management directly affect mining efficiency and safety levels. Along with roadway excavation, temporary supports need to be erected for protection. However, ordinary temporary supports cannot be folded, making transportation into the roadway difficult, and they cannot be integrated with the later permanent supports, requiring secondary dismantling. Utility Model Content

[0003] The purpose of this utility model is to provide a rapid temporary support folding device for coal mine roadway excavation faces to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A folding device for rapid temporary support in a coal mine roadway excavation face includes a connecting buckle, fixing lugs, a rotating shaft groove, a connecting rod, a reserved screw hole, a lifting screw, a fixed threaded sleeve, and a fixed base. Each connecting buckle has two integrally formed fixing lugs around its perimeter, and each fixing lug has a rotating shaft groove. A connecting rod is installed within each fixing lug around the connecting buckle via a rotating shaft, and the end of each connecting rod is also fitted with a connecting buckle in the same manner, thus forming a foldable and unfoldable protective net. A reserved screw hole is provided in the center of each connecting buckle, and the bottom of each connecting buckle around the perimeter is installed within the reserved screw hole via a lifting screw. The bottom of each lifting screw is installed within a fixed threaded sleeve, and a fixed base is welded to the bottom of each fixed threaded sleeve.

[0006] Preferably, the rapid temporary support folding device for coal mine roadway excavation faces also includes fixed anchor bolts. Fixed anchor bolts are installed from bottom to top in the reserved screw holes on the connecting buckle located in the center. The fixed anchor bolts are connected to the top of the roadway. After the lifting screw is removed as temporary support, the protective net composed of the connecting buckle and the connecting rod can still be fixed to the top of the roadway by the fixed anchor bolts, so as part of the permanent support and poured into the permanent support.

[0007] The beneficial effects of this utility model are: This utility model is reasonably designed. The connecting rod and the connecting buckle are combined to form a protective net through the rotating shaft. The whole can be folded and unfolded, which is convenient for transportation and installation. It is fixed by the lifting screw, and the top protective net can be used as part of the permanent support in the later stage. Attached Figure Description

[0008] Figure 1This is a schematic diagram of the structure of the quick temporary support folding device for coal mine roadway excavation face of this utility model;

[0009] Figure 2 This is a schematic diagram of the connecting buckle of the quick temporary support folding device for coal mine roadway excavation face according to this utility model.

[0010] In the diagram: 1. Connecting buckle, 2. Fixing lug, 3. Rotary shaft groove, 4. Connecting rod, 5. Reserved screw hole, 6. Lifting screw, 7. Fixing threaded sleeve, 8. Fixing base, 9. Fixing anchor rod. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0012] like Figures 1-2 As shown, a folding device for rapid temporary support in a coal mine roadway excavation face includes a connecting buckle 1, a fixing lug 2, a rotating shaft groove 3, a connecting rod 4, a reserved screw hole 5, a lifting screw 6, a fixed threaded sleeve 7, and a fixed base 8. The connecting buckle 1 has two integrally formed fixing lugs 2 around its perimeter, and each fixing lug 2 has a rotating shaft groove 3. Connecting rods 4 are installed in the fixing lugs 2 around the connecting buckle 1 via rotating shafts, and connecting buckles 1 are installed at the ends of the connecting rods 4 in the same manner, thus forming a foldable and unfoldable protective net. A reserved screw hole 5 is provided in the center of the connecting buckle 1. The bottom of the connecting buckles 1 around the perimeter is installed in the reserved screw hole 5 via a lifting screw 6, and the bottom of the lifting screw 6 is installed in the fixed threaded sleeve 7. A fixed base 8 is welded to the bottom of each fixed threaded sleeve 7. The rapid temporary support folding device for coal mine roadway excavation faces also includes fixed anchor bolts 9. Fixed anchor bolts 9 are installed from bottom to top in the reserved screw holes 5 on the connecting buckle 1 located in the center. The fixed anchor bolts 9 are connected to the top of the roadway. After the lifting screw 6 is removed as temporary support, the protective net composed of the connecting buckle 1 and the connecting rod 4 can still be fixed to the top of the roadway through the fixed anchor bolts 9, so as part of the permanent support and poured into the permanent support.

[0013] The working principle of this utility model is as follows: the connecting buckle 1 and the connecting rod 4 are connected to each other by a rotating shaft to form a foldable and unfoldable protective net. The height of the protective net is adjusted by the lifting screw 6 around the perimeter to support the top of the roadway. The connecting buckle 1 in the middle is connected to the top of the roadway by the fixed anchor 9. After the lifting screw 6 is removed as a temporary support, the protective net composed of the connecting buckle 1 and the connecting rod 4 can still be fixed to the top of the roadway by the fixed anchor 9, thus serving as part of the permanent support and being poured into the permanent support.

[0014] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary in all respects, and thus equivalent variations within the scope of this invention are included within its scope.

Claims

1. A quick temporary support folding device for coal mine roadway excavation faces, comprising a connecting buckle (1), a fixing lug (2), a rotating shaft groove (3), a connecting rod (4), a reserved screw hole (5), a lifting screw (6), a fixing threaded sleeve (7), and a fixing base (8), characterized in that: The connecting buckle (1) has two fixed lugs (2) integrally formed around its perimeter, and each fixed lug (2) has a rotating shaft groove (3). The fixed lugs (2) around the connecting buckle (1) are all fitted with connecting rods (4) through rotating shafts, and the ends of the connecting rods (4) are fitted with connecting buckles (1) in the same way, thus forming a foldable and unfoldable protective net. The connecting buckle (1) has a reserved screw hole (5) in the center, and the bottom of the connecting buckles (1) around its perimeter is fitted with a lifting screw (6) in the reserved screw hole (5). The bottom of the lifting screw (6) is fitted with a fixed threaded sleeve (7), and the bottom of the fixed threaded sleeve (7) is welded with a fixed base (8).

2. The rapid temporary support folding device for coal mine roadway excavation faces according to claim 1, characterized in that: The rapid temporary support folding device for the coal mine roadway excavation face also includes fixed anchor bolts (9). Fixed anchor bolts (9) are installed from bottom to top in the reserved screw holes (5) on the connecting buckle (1) located in the center. The fixed anchor bolts (9) are connected to the top of the roadway. After the lifting screw (6) is removed as a temporary support, the protective net composed of the connecting buckle (1) and the connecting rod (4) can still be fixed to the top of the roadway by the fixed anchor bolts (9), so as part of the permanent support and poured into the permanent support.

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