Safety rod bracket for underground tunneling working face

Abstract

The utility model provides a safety rod bracket for an underground tunneling working face, which comprises a vertically arranged first shaft rod, a sleeve is sleeved at the top of the first shaft rod, a second shaft rod is arranged at the bottom of the first shaft rod, a handle is arranged below the sleeve, a support plate is arranged at the top of the sleeve, a plurality of first claw teeth are arranged at the top of the support plate, and a plurality of second claw teeth are arranged at the bottom of the second shaft rod. A bottom plate is arranged at the bottom of the second shaft rod, and a plurality of second claw teeth are evenly distributed along the edge of the bottom of the bottom plate. The supporting device is small in occupied space, large in supporting force, beneficial to supporting operation, convenient to use, low in manufacturing cost and capable of being repeatedly moved and used along with extending of a roadway, effectively protects safety of operators and reduces the accident rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground protection equipment and relates to a safety rod bracket used for an underground excavation working surface. Background Art

[0002] During underground tunnel excavation in mines, after tunnel blasting occurs, workers need to perform dangerous operations such as shotcrete anchor support under bare rock. At this time, the falling of local bare rock, pumice, and ash skin can easily injure people, and the pumice needs to be inspected and pried to deal with it. After treatment, there may still be unforeseen rock falling. Therefore, it is necessary to design a tool that can support and stabilize the rock surface in a short time to prevent the rock from falling and collapsing suddenly, so as to ensure the personal safety of the workers. Utility Model Content

[0003] The purpose of the utility model is to address the problems existing in the prior art and provide a safety rod bracket for underground excavation working surfaces, which solves the problem that when workers perform dangerous operations such as shotcrete net support after tunnel blasting, rocks are prone to sudden falling and collapse, threatening the personal safety of workers.

[0004] To this end, the present invention adopts the following technical solutions:

[0005] A safety rod bracket for an underground excavation working surface comprises a first vertically arranged shaft rod, a sleeve being provided on the top of the first shaft rod and a second shaft rod being provided on the bottom, a handle being provided below the sleeve and a support plate being provided on the top, a plurality of first claws being provided on the top of the support plate, a bottom plate being provided on the bottom of the second shaft rod, and a plurality of second claws being evenly distributed along the edge of the bottom of the bottom plate.

[0006] Furthermore, the first shaft is a threaded rod, a nut is provided in the middle of the handle, and the two are movably connected through a thread.

[0007] Furthermore, the handle is in vertical contact with the sleeve.

[0008] The beneficial effects of the present invention are:

[0009] The utility model can quickly and effectively provide support force when workers carry out dangerous operations such as spray anchor net support after tunnel blasting occurs. It occupies a small space and has a large support force, which is conducive to support operations. At the same time, the utility model is easy to use and has a low cost. It can be repeatedly moved and used as the tunnel extends, effectively protecting the safety of workers and reducing the accident rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model.

[0011] In the figure, 1-handle, 2-first shaft, 3-second shaft, 4-base plate, 5-second claw, 6-sleeve, 7-support plate, 8-first claw. DETAILED DESCRIPTION

[0012] The technical solution of the present invention is described below in conjunction with the accompanying drawings and implementation methods.

[0013] like Figure 1 As shown, a safety rod bracket for underground excavation working surface includes a first shaft rod 2 arranged vertically, a casing 6 is sleeved on the top of the first shaft rod 2, and a second shaft rod 3 is arranged on the bottom.

[0014] A handle 1 is provided below the sleeve 6 and a support plate 7 is provided on the top. The support plate 7 is used to expand the supporting surface, and the handle 1 is in vertical contact with the sleeve 6. Specifically, the first shaft 2 is a threaded rod, and a nut is provided in the middle of the handle 1. The two are movably connected by a thread, and the axial pushing force can be achieved by rotating the threaded nut in coordination.

[0015] A number of first claws 8 are provided on the top of the support plate 7, and a base plate 4 is provided at the bottom of the second shaft rod 3. The base plate 4 is made of round steel with a thickness of 5 mm. A number of second claws 5 are evenly distributed along the edge of the bottom of the base plate 4. Specifically, the first claws 8 and the second claws 5 are both used to penetrate the surface of the tunnel and take root in the rock recesses, thereby playing a role in fixing and preventing slipping.

[0016] The utility model is used in the following process:

[0017] First, screw the center nut of the handle 1 onto the first shaft 2, and then insert the sleeve 6 into the first shaft 2 for sleeve assembly. The threaded rotation between the handle 1 and the first shaft 2 generates relative axial movement, forcing the steel sleeve 6 to move axially on the first shaft 2 until the support plate 7 is close to the tunnel arch and the bottom plate 4 is placed on the ground.

[0018] A blasting operation face (tunnel face) can be equipped with several devices close to the arch wall of the tunnel to achieve relative safety under the bare rock. Generally, a group uses at least 2 or more safety rod brackets, and 2-4 groups can be placed. It is convenient, labor-saving, low-cost, light in weight, takes up little space, and is easy to move, store, and store.

Claims

1. A safety rod bracket for underground excavation working surface, characterized in that: The invention comprises a first shaft (2) arranged vertically, a sleeve (6) being provided on the top of the first shaft (2), a second shaft (3) being provided on the bottom, a handle (1) being provided below the sleeve (6), a support plate (7) being provided on the top, a plurality of first claws (8) being provided on the top of the support plate (7), a bottom plate (4) being provided on the bottom of the second shaft (3), and a plurality of second claws (5) being evenly distributed along the edge of the bottom of the bottom plate (4).

2. A safety rod bracket for underground excavation working surface according to claim 1, characterized in that: The first shaft (2) is a threaded rod, a nut is provided in the middle of the handle (1), and the two are movably connected via a thread.

3. The safety rod bracket for underground excavation working surface according to claim 1, characterized in that: The handle (1) is in vertical contact with the sleeve (6).

Images