Net support machine for tunnel support and use method thereof

Abstract

The present invention belongs to the technical field of tunnel net support, and specifically relates to a net support machine for tunnel support and a method of using the net support machine, including a front support and a rear support, both end faces of the front support are provided with telescopic components I, both end faces of the rear support are provided with telescopic components II, a push telescopic component is provided between the front support and the rear support, both ends of the front support are provided with front brackets, and the rear support between the front brackets on both sides is provided with a rear bracket; the front bracket and the rear bracket are both Z-shaped structural parts. The burden of the construction personnel is reduced by the lifting of the net support machine, and the construction personnel gradually carry out the net laying support work as the net support machine moves forward during the support process.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel net support, and specifically relates to a net support machine for tunnel support and a use method thereof. Background Art

[0002] At present, the support methods for the head section of underground tunnel excavation in coal mines are generally "U"-shaped sheds, trapezoidal sheds, anchor nets or anchor belt nets. The existing technology uses manual construction to advance the top protection, or uses temporary support devices and airborne temporary support methods to protect the top. At present, there are many airborne temporary support methods. The above-mentioned various support methods have many processes, slow equipment movement, low work efficiency, high labor intensity, difficult roof management, and difficult to ensure safety. Especially when using anchor nets for support, the process of setting up the anchor nets depends entirely on manual lifting of the anchor nets or simple wooden supports to the top of the tunnel, so that the anchor nets are laid on the top of the tunnel. In this process, the safety of workers is difficult to guarantee and the physical exertion is too great, resulting in low efficiency. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a net supporting machine for tunnel support and a method of using the same.

[0004] The present invention is achieved through the following technical scheme: a net supporting machine for tunnel support, comprising a front support and a rear support, both end surfaces of the front support are provided with a telescopic component I, both end surfaces of the rear support are provided with a telescopic component II, a push-type telescopic component is provided between the front support and the rear support, front brackets are provided at both ends of the front support, and a rear bracket is provided on the rear support between the front brackets on both sides; the front bracket and the rear bracket are both Z-shaped structural parts.

[0005] Furthermore, the telescopic component I, the telescopic component II and the pushing telescopic component are all jacks.

[0006] Furthermore, one pushing telescopic component is arranged between the telescopic component I on both sides of the front support and the telescopic component II adjacent to the telescopic component I.

[0007] The present invention also provides a method for using a net-supporting machine for tunnel support, comprising the net-supporting machine for tunnel support described in any one of the above, and comprising the following using steps:

[0008] Step 1: The telescopic parts I and II on both sides of the net supporting machine are all extended to press against the coal wall. At this time, the net supporting machine is in the initial state, and the free end of the support anchor at the top of the tunnel is connected with a hanging striker. The net supporting machine is supported on the hanging striker and waits for operation;

[0009] Step 2: The telescopic parts I on both sides of the net supporting machine are retracted, and the push telescopic parts are extended to push the front support forward. During the forward movement, the front bracket of the front support relies on the Z-shaped structure to knock open the suspension striker on the front anchor rod;

[0010] Step 3: After the front support reaches the designated position, the telescopic parts I on both sides of the net support machine extend to press against the coal wall, and the telescopic parts II on both sides of the net support machine retract, and the push telescopic parts retract, pulling the rear support forward. During the forward movement, the rear bracket of the rear support relies on the Z-shaped structure to knock open the suspension striker on the front anchor rod. At this time, the net support machine has completely separated from the rear suspension striker, and the overall weight of the net support machine is borne by the front suspension striker;

[0011] Step 4: After the rear support reaches the designated position, the telescopic parts II on both sides of the net support machine extend to press against the coal wall. At this time, the protective net is placed at the front end supported by the front bracket and the rear bracket, and then the protective net is fixed to the top of the tunnel;

[0012] Step 5. Repeat steps 2 to 4 above to complete the tunnel support and advancement work.

[0013] The beneficial effects of the present invention are as follows: through the lifting of the net supporting machine, the burden of the construction workers is reduced, and during the support process, the construction workers gradually carry out the net laying support work as the net supporting machine moves forward, and the impact door used to support the net supporting machine can be automatically knocked open along the movement direction of the net supporting machine, which not only achieves the supporting effect on the net supporting machine, but also does not affect the support work of the net supporting machine along the laneway, and there is no need to disassemble the supporting device of the net supporting machine, which greatly reduces the workload of the construction workers and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the hanging collision door of the present invention;

[0017] In the figure, 1, rear support, 2, front support, 3, telescopic component II, 4, telescopic component I, 5, push-type telescopic component, 6, rear bracket, 7, front bracket, 8, hanging impact door, 8-1, upper frame, 8-2, rotating shaft, 8-3, baffle, 8-4, torsion spring, 8-5, anchor rod, 8-6, limit plate, 9, protective net. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 and Figure 2As shown, a net-supporting machine for tunnel support includes a front support 2 and a rear support 1. Both end surfaces of the front support 2 are provided with telescopic components I4, and both end surfaces of the rear support 1 are provided with telescopic components II3. A push-telescopic component 5 is arranged between the telescopic components I4 on both sides of the front support 2 and the telescopic components II3 adjacent to the telescopic components I4. The push-telescopic component 5 is used for the net-supporting machine to move forward and backward in the tunnel. Front brackets 7 are provided at both ends of the front support 2, and a rear bracket 6 is provided on the rear support 1 between the front brackets 7 on both sides; the front bracket 7 and the rear bracket 6 are both Z-shaped structural members. The telescopic component I4, the telescopic component II3 and the push-telescopic component 5 are all jacks. The telescopic component I4 and the telescopic component II3 are both used to fix the position of the net-supporting machine.

[0020] like Figures 1 to 3 As shown, the present invention also provides a method for using a net supporting machine for tunnel support, including the net supporting machine for tunnel support described in any one of the above, including the following using steps:

[0021] Step 1: The telescopic parts Ⅰ4 and Ⅱ3 on both sides of the net supporting machine are all extended to the coal wall. At this time, the net supporting machine is in the initial state. The free end of the support anchor at the top of the tunnel is connected with a hanging striker 8. The net supporting machine is supported on the hanging striker 8 and waits for operation. The hanging striker 8 is as shown in FIG. Figure 3 As shown, the suspended impact door 8 includes an upper frame 8-1, and a rotating shaft 8-2 is provided at both side ends of the upper frame 8-1, and a baffle 8-3 is provided at one end of the rotating shaft 8-2 away from the upper frame 8-1, and a torsion spring 8-4 is mounted on the rotating shaft 8-2, and one end of the torsion spring 8-4 is fixed to the upper frame 8-1; the rotating shaft 8-2 is rotationally connected to the upper frame 8-1, and the rotating shaft 8-2 is fixedly connected to the baffle 8-3; the upper frame 8-1 is fixed on the anchor rod 8-5; the two side ends of the upper frame 2 are also provided with limit plates 8-6 for limiting the position of the baffle 8-3, and there is no need to accurately adjust the initial position of the rotation of the torsion spring 8-4. When the net-supporting machine moves forward along the alley, the baffle 8-3 can be pushed open by the front bracket 7 or the rear bracket 6. After the front bracket 7 or the rear bracket 6 of the net-supporting machine passes, the baffles 8-3 on both sides are automatically restored to the closed state by relying on the torsion spring 8-4.

[0022] Step 2: The telescopic parts Ⅰ4 on both sides of the net support machine are retracted, and the push telescopic parts 5 are extended. The push telescopic parts 5 use the rear support 1 supported on the coal walls on both sides as the fulcrum to push the front support 2 forward. During the forward movement, the front bracket 7 of the front support 2 relies on the Z-shaped structure to knock open the hanging striker 8 on the front anchor rod;

[0023] Step 3: After the front support 2 reaches the designated position, the telescopic parts I4 on both sides of the net supporting machine extend to press against the coal wall, the telescopic parts II3 on ​​both sides of the net supporting machine retract, the push telescopic parts 5 retract, and the rear support 1 is pulled forward. During the forward movement, the rear bracket 6 of the rear support 1 relies on the Z-shaped structure to knock open the suspension striker 8 on the front anchor rod. At this time, the net supporting machine has completely separated from the rear suspension striker 8, and the overall weight of the net supporting machine is borne by the front suspension striker 8;

[0024] Step 4: After the rear support 1 reaches the designated position, the telescopic parts II3 on ​​both sides of the net supporting machine extend to press against the coal wall. At this time, the protective net 9 is manually placed at the front end supported by the front bracket 7 and the rear bracket 6, and then the protective net 9 is fixed to the top of the tunnel;

[0025] Step 5. Repeat steps 2 to 4 above to complete the tunnel support and advancement work.

Claims

1. A method for using a net support machine for tunnel support, characterized in that: The net support machine for tunnel support comprises a front support (2) and a rear support (1), both end surfaces of the front support (2) are provided with telescopic components I (4), both end surfaces of the rear support (1) are provided with telescopic components II (3), a push telescopic component (5) is provided between the front support (2) and the rear support (1), both ends of the front support (2) are provided with front brackets (7), and a rear bracket (6) is provided on the rear support (1) between the front brackets (7) on both sides; the front bracket (7) and the rear bracket (6) are both Z-shaped structural components; The net supporting machine for tunnel support comprises the following use steps: Step 1: The telescopic parts I (4) on both sides of the net support machine and the telescopic parts II (3) on both sides of the net support machine are all extended to press against the coal wall. At this time, the net support machine is in an initial state. The free end of the support anchor rod at the top of the tunnel is connected to a hanging striker (8). The net support machine is supported on the hanging striker (8) and waits for operation. The hanging striker (8) includes an upper frame (8-1). The two side ends of the upper frame (8-1) are provided with a rotating shaft (8-2). The rotating shaft (8-2) is away from one end of the upper frame (8-1). A baffle (8-3) is provided, a torsion spring (8-4) is sleeved on the rotating shaft (8-2), and one end of the torsion spring (8-4) is fixed to the upper frame (8-1); the rotating shaft (8-2) and the upper frame (8-1) are rotatably connected, and the rotating shaft (8-2) and the baffle (8-3) are fixedly connected; the upper frame (8-1) is fixed on the anchor rod (8-5); and limit plates (8-6) for limiting the position of the baffle (8-3) are also provided at both side ends of the upper frame; Step 2: The telescopic parts I (4) on both sides of the net supporting machine are retracted, and the push telescopic parts (5) are extended to push the front support (2) forward. During the forward movement, the front bracket (7) of the front support (2) relies on the Z-shaped structure to knock open the suspension striker (8) on the front anchor rod; Step 3: After the front support (2) reaches the designated position, the telescopic parts I (4) on both sides of the net support machine extend to press against the coal wall, the telescopic parts II (3) on both sides of the net support machine retract, the push telescopic parts (5) retract, and the rear support (1) is pulled forward. During the forward movement, the rear bracket (6) of the rear support (1) relies on the Z-shaped structure to knock open the suspension striker (8) on the front anchor rod. At this time, the net support machine has completely separated from the rear suspension striker (8), and the overall weight of the net support machine is borne by the front suspension striker (8); Step 4: After the rear support (1) reaches the designated position, the telescopic parts II (3) on both sides of the net support machine extend out to press against the coal wall. At this time, the protective net (9) is placed at the front end supported by the front bracket (7) and the rear bracket (6), and then the protective net (9) is fixed to the top of the tunnel; Step 5. Repeat steps 2 to 4 above to complete the tunnel support and advancement work.

2. The method for using the net support machine for tunnel support according to claim 1, characterized in that: The telescopic component I (4), the telescopic component II (3) and the push-telescopic component (5) are all jacks.

3. The method for using the net support machine for tunnel support according to claim 1, characterized in that: A push telescopic component (5) is arranged between the telescopic component I (4) on both sides of the front support (2) and the telescopic component II (3) adjacent to the telescopic component I (4).

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