Head-on net hanging device for heading face

Abstract

The utility model relates to the technical field of coal mine tunneling operation, concretely relates to a kind of tunneling working face head-on protective net hoisting device, mainly solve the technical problem that the head-on protective net suspension operation of existing existence empty roof operation risk.This device is equipped with clamping plate assembly, hinge, flap and telescopic sleeve, by clamping plate assembly can be fixed in the device on the drilling car girder, by hinge rotation can make flap switch to extended state, by telescopic sleeve elongation can make the device adapt to different width roadway, finally by closed loop hook head-on protective net is hung on telescopic sleeve, it can be just.The suspension operation of this device can be carried out before drilling car is opened into tunneling working face, after suspension, drilling car carries the device and head-on protective net to open to tunneling working face, so it can effectively eliminate the risk brought by empty roof operation.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunneling operation technology, and in particular to a device for hanging protective netting at the face of a tunneling working face. Background Technology

[0002] The face protection netting at the tunneling face serves as a crucial barrier to protect workers during the support process. It is primarily used to prevent falling rocks from injuring workers and is therefore of great significance.

[0003] In existing technology, after the drilling rig temporarily supports the roof, the workers begin installing the facing protection net before permanent support is provided for the roof. Only after the facing protection net is installed do they begin providing permanent support for the roof. Because the roof is still not fully supported when the facing protection net is being installed, there is a risk of working under an unsupported roof. Utility Model Content

[0004] To overcome the technical defects of existing face protection net suspension operations that pose risks of working under no-top conditions, this utility model provides a face protection net suspension device for tunneling faces.

[0005] The tunneling face face protection net hanging device provided by this utility model includes: The clamping plate assembly includes an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are clamped and fixed to the main beam of the drilling rig by through bolts. A hinge is installed on the upper surface of the upper clamping plate and has an overlap area reserved with the edge of the upper clamping plate. The axis of the hinge extends in the front-back direction. A flap, one end of which is connected to the hinge in the left-right direction, has an extended state that partially overlaps the overlapping area and partially extends out of the upper clamping plate, and a retracted state that is attached to the upper clamping plate, by rotating the flap through the hinge. The telescopic sleeve has two sets, both of which are fixed to the other end of the flap in the left-right direction. Each set of telescopic sleeves extends in the front-back direction and the two sets of telescopic sleeves extend in opposite directions. The telescopic sleeve is equipped with a locking element for locking the length.

[0006] Optionally, the flap is a frame structure.

[0007] Optionally, the frame structure is welded from multiple angle steels.

[0008] Optionally, the locking element is a screw screwed onto the wall of the telescopic sleeve.

[0009] Optionally, the innermost free end of the telescopic sleeve is provided with a limiting rod, which is used to cooperate with the closed-loop hook to limit the end of the frontal guard net.

[0010] The technical solution provided by this utility model has the following advantages compared with the prior art: This novel face-mounted protective netting suspension device for tunneling faces comprises a clamping plate assembly, hinges, a flapping plate, and a telescopic sleeve. The clamping plate assembly secures the device to the main beam of the drilling rig. Rotating the hinges allows the flapping plate to extend, and extending the telescopic sleeve adapts the device to tunnels of varying widths. Finally, the face-mounted protective netting is suspended from the telescopic sleeve via a closed-loop hook. The suspension operation can be performed before the drilling rig enters the tunneling face. After suspension, the drilling rig carries the device and the face-mounted protective netting to the face, effectively eliminating the risks associated with working under unsupported roofs. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the hanging device in an embodiment of the present invention; Figure 2 An installation diagram showing the flap in the extended state in an embodiment of this utility model; Figure 3 This is an installation diagram showing the flap in the retracted state in an embodiment of this utility model.

[0014] In the picture: 1. Clamping plate assembly; 11. Upper clamping plate; 12. Lower clamping plate; 13. Bolt; 2. Hinge; 3. Flip plate; 4. Telescopic sleeve; 5. Limiting rod; 100. Main beam; 200. Front guard net; 300. Closed-loop hook. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0016] In this description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0018] The following is combined with Figures 1 to 3 The specific embodiments of this utility model will be described in detail below.

[0019] This embodiment provides a hoisting device for the face protection net of a tunneling working face, including a clamping plate assembly 1, a hinge 2, a flap 3, and a telescopic sleeve 4.

[0020] The clamping plate assembly 1 includes an upper clamping plate 11 and a lower clamping plate 12, and the upper clamping plate 11 and the lower clamping plate 12 are clamped and fixed to the main beam 100 of the drilling rig by through bolts 13.

[0021] It is easy to understand that the lower clamping plate 12 and the upper clamping plate 11 are relatively independent. When in use, the lower clamping plate 12 is placed below the main beam 100 of the drilling rig, and the upper clamping plate 11 is placed above the main beam 100 of the drilling rig. Then, the bolts 13 pass through the upper clamping plate 11 and the lower clamping plate 12 at the same time, so that the head of the bolt 13 abuts against one clamping plate, and the tail of the bolt 13 is tightened to the other clamping plate with the nut. In this way, the entire device is fixed relative to the main beam 100 of the drilling rig.

[0022] Specifically, the location and number of bolts 13 are not limited, with the design based on ensuring secure fixing and not interfering with other structures.

[0023] The hinge 2 is installed on the upper surface of the upper clamping plate 11 and has an overlap area reserved with the edge of the upper clamping plate 11. The axis of the hinge 2 extends in the front-back direction.

[0024] Specifically, hinge 2 is a mature structure in this field, which includes a shaft core and two bushings fitted outside the shaft core. The first bushing is fixedly connected to the upper clamping plate 11, and the second bushing is connected to the flip plate 3.

[0025] The flap 3 is connected to the hinge 2 at one end in the left-right direction. The flap 3 can be rotated by the hinge 2 to have an extended state in which it partially overlaps the overlapping area and partially extends outward from the upper clamp 11, and a retracted state in which it is attached to the upper clamp 11.

[0026] It should be noted that the main purpose of the overlapping area is to support the flap 3 when it is in the deep state, so that the flap 3 remains in the extended state under the action of gravity.

[0027] It is easy to understand that the state switching of the flip plate 3 is achieved by the rotation of the second bushing relative to the shaft core.

[0028] It should be noted that the flap 3 has both an extended state and a retracted state. Its design purpose is that after the tunneling work is completed, this device descends with the main beam 100 of the drilling rig and then flips to the retracted state to facilitate other operations.

[0029] Specifically, the flap 3 has a frame structure, which is lighter and has higher structural strength, and also helps to avoid the position of the bolt 13 on the upper clamping plate 11.

[0030] More specifically, the frame structure is welded from multiple angle steels, making the materials readily available.

[0031] The telescopic sleeve 4 has two sets, both fixed to the other end of the flap 3 in the left-right direction. Each set of telescopic sleeves 4 extends in the front-back direction, and the two sets of telescopic sleeves 4 extend in opposite directions. The telescopic sleeve 4 is equipped with a locking element to lock its length. In use, the frontal guard net 200 is suspended on the telescopic sleeve 4 by the closed-loop hook 300.

[0032] It is easy to understand that the reason why the telescopic sleeve 4 is designed in two sets with opposite extension directions is mainly to adapt to roadways of different widths by extending the two sets of telescopic sleeve 4, so that the facing protection net 200 can cover the entire cross section.

[0033] Specifically, the locking element is a screw screwed onto the wall of the telescopic sleeve 4. It should be noted that when the telescopic sleeve 4 has N nested layers, all of the remaining N-1 layers except the innermost layer need to have screws shaped at the ends facing the extension direction so that each layer of the sleeve can be locked and fixed after extension. This is something that those skilled in the art can easily design.

[0034] Furthermore, a limiting rod 5 is provided at the innermost free end of the telescopic sleeve 4. The limiting rod 5 is used to limit the end of the facing net 200 in conjunction with the closed-loop hook 300. The so-called free end is the end facing the extension direction. Since the facing net 200 has no axial positioning when suspended on the telescopic sleeve 4 by the closed-loop hook 300, although the length of the telescopic sleeve 4 is extended to match the width of the roadway, the facing net 200 is prone to sliding relative to the telescopic sleeve 4 with the closed-loop hook 300. Therefore, this device adds a limiting rod 5. When the facing net 200 is suspended on the telescopic sleeve 4 by the closed-loop hook 300, both the front and rear ends of the facing net 200 are suspended outside the limiting rod 5 by the closed-loop hook 300. This restricts the movement of the two closed-loop hooks 300 at the front and rear ends by the limiting rod 5, thereby effectively preventing the facing net 200 from moving along the telescopic sleeve 4, and thus ensuring that the facing net 200 covers the entire cross section.

[0035] The working principle of the face protection netting hanging device in this embodiment is as follows: Before the drilling rig reaches the tunneling face, the upper clamping plate 11 and the lower clamping plate 12 are first clamped and fixed to the upper and lower sides of the main beam 100 of the drilling rig by bolts 13. Then, the flip plate 3 is flipped to the extended state. Next, the telescopic sleeve 4 is extended. Finally, the face protection net 200 is suspended on the telescopic sleeve 4 by the closed loop hook 300, and the front and rear ends of the face protection net 200 are limited by the limiting rod 5. After the drilling rig reached the tunneling face, the 200mm face protection netting completely covered the entire cross section; When the tunneling operation is completed, first remove the closed-loop hook 300 connected to the face protection net 200 from the telescopic sleeve 4, then retract the telescopic sleeve 4, then lower the main beam 100 of the drilling rig, and finally flip the flap 3 to the retracted state.

[0036] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.

Claims

1. A hanging device for the protective netting at the tunnel face, characterized in that, include: The clamping plate assembly (1) includes an upper clamping plate (11) and a lower clamping plate (12), wherein the upper clamping plate (11) and the lower clamping plate (12) are clamped and fixed to the main beam (100) of the drilling rig by through bolts (13); The hinge (2) is installed on the upper surface of the upper clamping plate (11) and has an overlap area reserved with the edge of the upper clamping plate (11). The axis of the hinge (2) extends in the front-back direction. A flap (3) is connected to the hinge (2) at one end in the left-right direction. The flap (3) rotates through the hinge (2) to have an extended state in which it partially overlaps the overlapping area and partially extends outward from the upper clamp (11) and a retracted state in which it is attached to the upper clamp (11). The telescopic sleeve (4) has two sets, both of which are fixed to the other end of the flap (3) in the left-right direction. Each set of telescopic sleeves (4) extends in the front-back direction and the two sets of telescopic sleeves (4) extend in opposite directions. The telescopic sleeve (4) is equipped with a locking element for locking the length.

2. The face protection net hanging device according to claim 1, characterized in that, The flap (3) is a frame structure.

3. The face protection net hanging device according to claim 2, characterized in that, The frame structure is welded from multiple angle steel bars.

4. The face protection net hanging device according to claim 1, characterized in that, The locking element is a screw that is screwed onto the wall of the telescopic sleeve (4).

5. The face protection net hanging device according to claim 1, characterized in that, The innermost sleeve of the telescopic sleeve (4) is provided with a limiting rod (5), which is used to cooperate with the closed loop hook (300) to limit the end of the front guard net (200).

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