Pneumatic crashing wedge device for underground tunneling support

Abstract

The utility model relates to the technical field of coal mine auxiliary equipment, in particular to a pneumatic wedge colliding device for underground tunneling support, which comprises a rear handle mounted on an air pick, a limiting rod connected to the tail end of the rear handle and a locking sleeve sleeved on the rear handle. A limiting table for limiting is arranged at the joint of the rear handle and the limiting rod; the limiting rod is used for being connected with an anchor rod. In the utility model, the rear handle is arranged on the end head of the air pick, power is provided by the air pick, the anchor rod for supporting is sleeved on the limiting rod, and the anchor rod is positioned and locked by the locking sleeve; the overall structure is simple, disassembly is fast, the machining and transformation cost is low, the underground anchor rod supporting efficiency is improved, and the working intensity of underground workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine auxiliary equipment, in particular to a pneumatic wedge striker used for underground tunneling support. Background Art

[0002] In underground coal mine excavation construction, the support forms vary with the changes in geological conditions. When encountering soft rock or broken zones during excavation, the commonly used support method is scaffolding support. When encountering particularly broken roofs, scaffolding and wedge advance combined support is used.

[0003] However, the commonly used means of wedge support at present is to use manpower and sledgehammers to install and pound the support brackets. This method cannot be operated by one person and requires two or more people to operate. This construction method is not only labor-intensive, but also very time-consuming. During the construction process, the underground roof cannot be supported in time, and there are greater safety hazards. Utility Model Content

[0004] The utility model aims to provide a pneumatic wedge striker for underground tunneling support, which has a compact structure, is quick to install, reduces construction time and has strong expansion capability.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A pneumatic wedge striker for underground tunneling support, comprising a rear handle mounted on a pneumatic pick, a limit rod connected to the end of the rear handle, and a locking sleeve sleeved on the rear handle;

[0007] A limiting platform for limiting is provided at the connection between the rear handle and the limiting rod; the limiting rod is used to connect the anchor rod.

[0008] Furthermore, the surface of the rear handle is provided with a rear handle thread, and the inner wall of the locking sleeve is provided with a sleeve thread; the rear handle and the sleeve thread are thread-locked by matching the rear handle thread with the sleeve thread;

[0009] Furthermore, the limiting rod is provided with a limiting hole for anchor rod insertion connection;

[0010] Furthermore, the inner wall of the locking sleeve is also provided with an anti-skid pad, and the anti-skid pad is used to abut against the sleeve-type anchor rod to prevent slipping;

[0011] Furthermore, the locking sleeve opening on one side of the anti-slip pad is smaller than the locking sleeve opening on one side of the sleeve thread;

[0012] Furthermore, the side edge of the limit platform is a curved surface, and the curved surface smoothly transitions with the rear handle and the limit rod;

[0013] Furthermore, the rear handle, the limiting rod and the limiting platform are an integrated structure;

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model provides a pneumatic wedge striker for underground excavation support, wherein the rear handle is mounted on the end of a pneumatic pick, the pneumatic pick provides power, the anchor rod used for support is sleeved on a limit rod, and the anchor rod is positioned and locked by a locking sleeve; the overall structure is simple, the disassembly is quick, the processing and modification cost is low, the efficiency of underground anchor rod support is improved, and the work intensity of underground workers is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the utility model connected with an inserted anchor rod;

[0019] Figure 4 It is a schematic diagram of the utility model being connected with a sleeve-type anchor rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] refer to Figure 1-4 As shown, a pneumatic wedge striker for underground excavation support comprises a rear handle 11 mounted on a pneumatic pick, a limit rod 12 connected to the end of the rear handle 11, and a locking sleeve 3 sleeved on the rear handle 11;

[0022] A limiting platform 13 for limiting position is provided at the connection between the rear handle 11 and the limiting rod 12; the limiting rod 12 is used to connect the anchor rod.

[0023] During the specific implementation of the utility model, the rear handle 11 is installed on the end of the pneumatic pick, which provides power. The anchor rod sleeve used for support is connected to the limit rod 12, and the locking sleeve 3 is used to position and lock the anchor rod. The overall structure is simple, disassembly is quick, and the processing and modification cost is low, which improves the efficiency of underground anchor rod support and reduces the work intensity of underground workers.

[0024] In this embodiment, the surface of the rear handle 11 is provided with a rear handle thread 111, and the inner wall of the locking sleeve 3 is provided with a sleeve thread 31; the rear handle 11 and the sleeve thread 31 are thread-locked by the rear handle thread 111 cooperating with the sleeve thread 31. The rear handle thread 111 on the rear handle 11 and the sleeve thread 31 on the inner wall of the locking sleeve 3 are thread-locked and matched, and by thread matching, different models and sizes of locking sleeves 3 can be selected as required.

[0025] refer to Figure 3 In this embodiment, the limiting rod 12 is provided with a limiting hole 121 for anchor rod insertion connection; the limiting rod 12 is reserved with a limiting hole 121 of standard threaded steel size, which is used to limit the installation of the threaded steel anchor rod 4, further improving the adaptability to various anchor rods and improving the efficiency of underground support operations.

[0026] refer to Figure 4 In this embodiment, the inner wall of the locking sleeve 3 is also provided with an anti-skid pad 32, and the anti-skid pad 32 is used to abut against the sleeve-type anchor rod to prevent slipping; the opening of the locking sleeve 3 on one side of the anti-skid pad 32 is smaller than the opening of the locking sleeve 3 on one side of the sleeve thread 31; in actual use, when the locking sleeve 3 is rotated and moved through the sleeve thread 31, the anti-skid pad 32 gradually approaches the sleeve-type anchor rod 5, and the opening of the locking sleeve 3 on one side of the anti-skid pad 32 can further abut and fix the sleeve-type anchor rod 5 to achieve a locking effect; the replaceable locking sleeve, combined with the stepless adjustable thread locking, can adapt to anchor rods of various sizes and models, thereby improving the adaptability to various support anchor rods.

[0027] In this embodiment, the side of the limiting platform 13 is an arc surface, and the arc surface smoothly transitions with the rear handle 11 and the limiting rod 12; the rear handle 11, the limiting rod 12 and the limiting platform 13 are an integrated structure.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A pneumatic wedge striker for underground tunneling support, characterized in that: It comprises a rear handle (11) mounted on a pneumatic pick, a limiting rod (12) connected to the end of the rear handle (11), and a locking sleeve (3) sleeved on the rear handle (11); A limiting platform (13) for limiting position is provided at the connection between the rear handle (11) and the limiting rod (12); the limiting rod (12) is used to connect the anchor rod.

2. A pneumatic wedge striker for underground tunneling support according to claim 1, characterized in that: The surface of the rear handle (11) is provided with a rear handle thread (111), and the inner wall of the locking sleeve (3) is provided with a sleeve thread (31); the rear handle (11) and the sleeve thread (31) are thread-locked by matching the rear handle thread (111) with the sleeve thread (31).

3. A pneumatic wedge striker for underground tunneling support according to claim 1, characterized in that: The limiting rod (12) is provided with a limiting hole (121) for anchor rod insertion connection.

4. A pneumatic wedge striker for underground tunneling support according to claim 2, characterized in that: The inner wall of the locking sleeve (3) is also provided with an anti-skid pad (32), and the anti-skid pad (32) is used to abut against the inserted anchor rod to prevent slipping.

5. A pneumatic wedge striker for underground tunneling support according to claim 4, characterized in that: The opening of the locking sleeve (3) on one side of the anti-slip pad (32) is smaller than the opening of the locking sleeve (3) on one side of the sleeve thread (31).

6. A pneumatic wedge striker for underground tunneling support according to claim 1, characterized in that: The side edge of the limiting platform (13) is an arc surface, and the arc surface smoothly transitions with the rear handle (11) and the limiting rod (12).

7. A pneumatic wedge striker for underground tunneling support according to claim 1, characterized in that: The rear handle (11), the limiting rod (12) and the limiting platform (13) are an integrated structure.

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