Drilling counter-force device of drilling and blasting method tunnel pneumatic rock drill

Abstract

The utility model discloses a drilling and blasting method tunnel pneumatic rock drill drilling counter-force device which comprises a plurality of vertical connecting rods which are transversely arranged at intervals, at least two transverse connecting rods are vertically arranged between every two adjacent vertical connecting rods at intervals, the transverse connecting rods are connected with the vertical connecting rods through connecting pieces, the vertical connecting rod on the front side is used for fixing, and the vertical connecting rod on the rear side is used for fixing. The vertical connecting rod on the rear side is used for being connected with the air leg end of the pneumatic rock drill in a clamped mode and can be gradually switched to be connected to the previous vertical connecting rod in a clamped mode along with drilling of the pneumatic rock drill. The device is simple to fold and unfold and easy to operate, can effectively solve the problem that the drilling operation is influenced by the instability of the root of the air leg of the rock drill in the drilling and blasting method drilling operation, and can improve the drilling efficiency and reduce the labor investment.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction using a drill and blast method, in particular to a drilling reaction force device for a pneumatic rock drill for a tunnel using a drill and blast method. Background Art

[0002] With the continuous advancement of infrastructure construction in my country, drilling and blasting is widely used in the construction of underground projects or tunnel projects. The drilling and blasting method is widely used for its high construction flexibility and strong adaptability. As an important process of drilling and blasting construction, the operation time and personnel input of the drilling operation have become one of the important processes affecting the entire drilling and blasting construction.

[0003] The commonly used artificial drilling equipment in the industry is the air-leg pneumatic rock drill, which relies on compressed air to drive the piston to reciprocate. During the stroke, the piston hits the drill tail, and during the return stroke, the piston drives the drill to rotate to achieve rock crushing and drilling. During the drilling process, the air-leg rock drill relies on the air leg to support the ground or rock surface to provide reaction force to ensure the normal operation of the rock drill.

[0004] At present, during the drilling construction process, the gas leg relies on the rock at the bottom of the tunnel to provide reaction force. The environment in the drilling area of ​​the tunnel face is relatively poor, and it is easy to have water accumulation, uneven bottom rock, and rocks that have not been cleaned up in the upper circulation, which makes it difficult for the gas leg to take root. In addition, as the drill rig drills, the gas leg needs to move forward synchronously. During the drilling construction process, it is easy to have problems such as unstable leg support and difficulty in taking root. Especially in the process of drilling the bottom hole, personnel are often required to cooperate with the gas leg to take root, which is labor-intensive and time-consuming, prolonging the drilling operation time and increasing the number of drilling operators. The poor working environment of the face, the increase in the operation time and the number of operators, to a certain extent, restrict the application and promotion of this technology on site. Utility Model Content

[0005] In order to solve the problems of difficulty in rooting of air legs, inconvenient operation, loss of work time and so on during drilling operation, the utility model provides a drilling reaction force device for a pneumatic rock drill in a tunnel using the drill and blast method, which can improve the rooting effect of the air legs of the pneumatic rock drill, improve the drilling efficiency of the drill and blast method, and reduce the operation time.

[0006] The technical solution adopted by the utility model is a drilling reaction force device for a pneumatic rock drill in a tunnel using a drill-and-blast method, comprising a plurality of vertical connecting rods arranged at intervals in a transverse direction, at least two transverse connecting rods being arranged at intervals in a vertical direction between adjacent vertical connecting rods, the transverse connecting rods being connected to the vertical connecting rods by connecting pieces, the front vertical connecting rod being used for fixing, the rear vertical connecting rod being used for clamping the air leg end of the pneumatic rock drill, and being able to be gradually switched and clamped to the previous vertical connecting rod as the pneumatic rock drill is drilling.

[0007] Furthermore, the connecting piece is a circular ring piece.

[0008] Furthermore, connecting pieces are provided at both end portions of the transverse connecting rod and the vertical connecting rod.

[0009] Furthermore, the transverse connecting rods and the vertical connecting rods are made of threaded steel bar segments, and the connecting pieces are made of threaded steel rings.

[0010] Furthermore, five vertical connecting rods are arranged with equal spacing.

[0011] The utility model has the following beneficial effects:

[0012] 1. The device is simple to retract and easy to operate. It can effectively solve the problem of unstable root of the gas leg of the rock drill in the drilling and blasting method affecting the drilling operation, and can improve the drilling efficiency and reduce labor input.

[0013] 2. The device is easy to process, has strong operability, high structural integrity and rigidity, is simple to maintain, and can be recycled.

[0014] 3. The two adjacent vertical connecting rods are connected by threaded steel rings, which enhance the adaptability to uneven ground areas. They can adapt to the unevenness of the tunnel face area, poor rock integrity and other areas that affect the rooting of the rock drill's air legs. Especially in the process of drilling the bottom plate eye of the tunnel face, since the bottom plate eye is located at the bottom of the face, the reaction force device can effectively ensure that the air legs are stably and reliably rooted, and the application effect is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the transverse connecting rod of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the vertical connecting rod of the utility model;

[0018] Figure 4 It is a use schematic diagram of the utility model.

[0019] In the figure: 1. reaction device; 11. horizontal connecting rod; 12. vertical connecting rod; 13. connecting piece; 2. air leg; 3. drill bit for drill pipe; 4. heading face. DETAILED DESCRIPTION

[0020] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a drilling reaction force device of a tunnel pneumatic rock drill using a drill and blast method of the utility model in conjunction with the accompanying drawings.

[0021] like Figure 1~Figure 3As shown, a drilling reaction force device for a pneumatic rock drill in a tunnel using a drill-and-blast method comprises a plurality of vertical connecting rods 12 arranged at intervals in a transverse direction, at least two transverse connecting rods 11 are arranged at intervals in a vertical direction between adjacent vertical connecting rods 12, the transverse connecting rods 11 are connected to the vertical connecting rods 12 via connecting pieces 13, the front vertical connecting rod 12 is used for fixing, and the rear vertical connecting rod 12 is used for clamping the end of the air leg 2 of the pneumatic rock drill, and can be gradually switched to be clamped to the previous vertical connecting rod 12 as the pneumatic rock drill drills.

[0022] In this embodiment, the transverse connecting rod 11 and the vertical connecting rod 12 are made of threaded steel bar segments. Taking the processing and manufacturing of the reaction force device 1 with a length of 2m and a width of 50cm as an example, the transverse connecting rod 11 is cut from threaded steel bar segments with a diameter of 22mm and a length of 40cm, and the number of segments is four. The vertical connecting rod 12 is cut from threaded steel bar segments with a diameter of 22mm and a length of 50cm, and the number of segments is five.

[0023] The connecting member 13 is a circular ring member, which is made of a threaded steel ring, the steel diameter of the threaded steel ring is 10 mm, the inner diameter is 36 mm, and the threaded steel rings are welded at both ends of each threaded steel bar segment. When processing the threaded steel rings, the threaded steel rings used for the threaded steel bar segments to be connected are connected in advance.

[0024] like Figure 4 As shown, during the drilling operation, the reaction device 1 is placed at the bottom of the tunnel. According to the actual drilling situation on site, the end of the air leg 2 of the pneumatic rock drill is clamped on a suitable segment. The pneumatic rock drill pushes the drill rod with a chisel 3. The reaction device 1 is manually fixed on the side close to the face 4. As the pneumatic rock drill drills, the end of the air leg 2 can be moved to the next segment, and so on. After the drilling is completed, the reaction device 1 is moved to the next drilling position, and the operation is cyclic until the drilling is completed.

[0025] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A drilling reaction device for a pneumatic rock drill in a tunnel using a drill and blast method, characterized in that: The invention comprises a plurality of vertical connecting rods (12) arranged at intervals in a transverse direction, at least two horizontal connecting rods (11) are arranged at intervals in a vertical direction between adjacent vertical connecting rods (12), the horizontal connecting rods (11) and the vertical connecting rods (12) are connected via connecting pieces (13), the vertical connecting rods (12) on the front side are used for fixing, and the vertical connecting rods (12) on the rear side are used for clamping the ends of the air legs (2) of the pneumatic rock drill, and can be gradually switched to be clamped to the previous vertical connecting rod (12) as the pneumatic rock drill drills.

2. The drilling reaction force device of a pneumatic rock drill for a tunnel using a drill and blast method according to claim 1, characterized in that: The connecting piece (13) is a circular ring piece.

3. The drilling reaction force device of a pneumatic rock drill for a tunnel using a drill and blast method according to claim 2, characterized in that: Connecting pieces (13) are provided at both end portions of the transverse connecting rod (11) and the vertical connecting rod (12).

4. The drilling reaction force device of a pneumatic rock drill for a tunnel using a drill and blast method according to claim 2 or 3, characterized in that: The transverse connecting rod (11) and the vertical connecting rod (12) are made of threaded steel bar segments, and the connecting piece (13) is made of threaded steel rings.

5. The drilling reaction force device of a pneumatic rock drill for a tunnel using a drill and blast method according to claim 1, characterized in that: Five vertical connecting rods (12) are provided, and the distances between them are equal.

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