CN107386978B - Coal mine rock tunnel three-axis cutting and drilling rock breaking device - Google Patents

Abstract

The invention relates to a three-axis cutting and drilling rock-breaking device for coal mine rock tunnels. The three-axis cutting and drilling rock-breaking device for coal mine rock tunnels includes a drill rod arranged on an adjusting bracket. The length direction of the drill rod is horizontal and One end is connected to a horizontal driving mechanism, and multiple drill rods are arranged at parallel intervals on the adjustment bracket. The horizontal drive mechanism drives the drill rods to move horizontally and perform drilling operations. The spatial position of the drill rods on the adjustment bracket is adjustable. According to the present invention The structure is simple, and it can carry out drilling construction at high speed and high quality while ensuring safety. Three holes are drilled at a time, which increases the number of holes drilled per unit time, reduces the drilling time, and ensures the time between drillings. The unification of parallelism and angle makes the blast hole have better integrity, reduces the depth error along the blast hole, improves the utilization of blasting energy, improves the blasting process, reduces the consumption of personnel time, and reduces construction costs.

Description

Coal mine rock tunnel three-axis cutting and drilling rock breaking device

Technical field

The invention relates to the technical field of blasting and drilling, and in particular to a three-axis cutting and drilling rock breaking device for coal mine rock tunnels.

Background technique

Due to the narrow construction section and high rock strength of coal mine rock tunnel excavation in my country, the use of tunnel boring machines has low construction efficiency, high equipment costs, and large mechanical wear. It is especially affected by the underground construction environment and has poor adaptability. Cut blasting has good adaptability to geological conditions, low construction cost, relatively mature technology, and is currently widely used. Cut blasting mainly involves arranging cut holes on the excavation surface and using low-section detonators to detonate the explosives in the cut first to form a cut cavity, which adds a new free surface for subsequent blasthole blasting and improves the problem of only one free surface in tunnel blasting. , Reduce the pinching effect of rock mass blasting.

The quality of the cut hole directly affects the effect of cut blasting. Downhole drilling tools mostly use rock drilling rigs and portable rock drills. Rock drilling rigs are more expensive and are limited by the size of the excavation section when running underground. Restrictions cannot be applied. Also due to the size of the excavation section, it is not convenient for multiple portable rock drills to operate at the same time. For underground portable rock drills, one rock drill drills one hole at a time. The drilling efficiency is low and the time is long. Also due to the different operating levels of workers, The angle and depth errors of the cut hole are large, which makes the cut blast hole have a large deviation along the hole depth direction and the depth of the hole bottom is different. As a result, the energy generated by the explosive explosion cannot form an overall shear effect well, resulting in a decrease in blasting energy. It is wasteful and the grooving effect is poor, which in turn affects the overall blasting effect of the section.

Due to the influence of the height of the rock drilling machinery, currently underground, blastholes above the middle of the excavation surface are drilled first, and then the slag is removed through the scraper, and then blastholes at the lower part of the excavation are drilled, resulting in discontinuity in the process. Due to the work of the scraper, Other processes cannot be carried out on the working surface, resulting in a waste of personnel time.

Contents of the invention

The object of the present invention is to provide a three-axis cutout and rock-breaking device for coal mine rock tunnels, which solves the limitations of the excavation section size on the drilling machinery, long construction time, low drilling efficiency, discontinuous blasting processes, and the problem of cutting holes. Problems such as large errors in drilling angle and depth.

In order to achieve the above purpose, the technical solution adopted by this combined structure invention is:

A three-axis cutting and drilling rock breaking device for coal mine rock tunnels, including a drill rod arranged on an adjusting bracket. The drill rod is horizontal in its long direction and one end is connected to a horizontal driving mechanism. The drill rods are located on the adjusting bracket and are arranged at parallel intervals. A plurality of horizontal driving mechanisms drive the drill rod to move horizontally and reciprocally and perform drilling operations. The spatial position of the drill rod located on the adjustment bracket is adjustable.

The present invention also has the following features:

The horizontal driving mechanism includes a cylinder arranged on an adjusting bracket. A piston is provided in the cylinder. The piston divides the cylinder body into two chambers. The rod end of the drill rod is connected to one end of the piston. The drill rod extends out of the cylinder body of the cylinder, and the two chambers of the cylinder body are respectively connected with the air source through pipelines.

The drill rod is a hollow tube structure, the piston is provided with a waterway, the waterway is provided with an outlet connected to the rod end of the drill rod, the outlet is provided with a needle, and the needle is inserted between the drill rod and the piston. At the connection end, the waterway is provided with an inlet connected to a high-pressure water source.

The adjustment bracket includes a support foot. The height of the support foot is adjustable. A flange is provided at the upper end of the support foot. A first adjustment tube is vertically provided on the flange. The first adjustment tube The lower end forms an adjustable rotary connection with the flange. The upper end of the first regulating pipe is provided with a second regulating pipe. The second regulating pipe forms an adjustable rotary connection with the first regulating pipe. The second regulating pipe The end extends horizontally and is provided with a third regulating pipe. The third regulating pipe forms an adjustable rotational connection with the second regulating pipe. The cylinder body of the cylinder is fixed on the pipe end of the third regulating pipe.

A first adjusting bolt is provided at the connection between the second adjusting tube and the first adjusting tube. The first adjusting bolt passes through the first adjusting tube and abuts against the outer wall of the second adjusting tube. The third adjusting tube is connected with the outer wall of the second adjusting tube. The second adjustment tube is provided with a second adjustment bolt, which passes through the third adjustment tube and abuts against the outer wall of the second adjustment tube.

The first adjustment tube is inserted into the outer tube wall of the second adjustment tube. The inner wall of the first adjustment tube is provided with a first convex ring. The outer tube wall of the second adjustment tube is provided with a first convex ring. The first ring groove is matched with the convex ring. The first adjusting bolt passes through the first adjusting tube and abuts against the bottom of the first ring groove of the second adjusting tube. The third adjusting tube is inserted into the second adjusting tube. On the outer tube wall, the inner wall of the third adjustment tube is provided with a second convex ring, and the outer tube wall of the second adjustment tube is provided with a second annular groove that cooperates with the second convex ring. The bolt passes through the third adjustment tube and abuts against the bottom of the second annular groove of the second adjustment tube.

The piston is provided with a piston rod, the rod end of the piston rod is provided with a drill tail cylinder liner, the piston rod and the drill tail cylinder liner are connected through threads, and the drill rod is inserted into the drill tail cylinder liner.

Compared with the existing technology, the technical effects of the present invention are: the present invention has a simple structure and can perform drilling construction at high speed and high quality while ensuring safety. Three holes can be drilled at a time, which improves drilling efficiency per unit time. The number of holes can reduce the drilling time, ensure the uniformity of parallelism and angle between blast holes, make the blast hole integrity better, reduce the depth error along the blast hole, improve the utilization rate of blasting energy, and improve the The blasting process reduces the consumption of personnel time and reduces construction costs.

Description of drawings

Figure 1 is a schematic structural diagram of a three-axis cutting and drilling rock breaking device in a coal mine rock tunnel;

Figure 2 is a cross-sectional view of the cylinder in the three-axis cutting and drilling rock breaking device in the coal mine rock tunnel;

Figure 3 is a cross-sectional view of the adjusting bracket in the three-axis cutting and drilling rock breaking device in the coal mine rock tunnel;

Figure 4 is an end view of the cylinder in the three-axis cutting and drilling rock breaking device in the coal mine rock tunnel.

Detailed ways

The present invention will be further described with reference to Figures 1 to 4:

The three-axis cutting and drilling rock breaking device for coal mine rock tunnels includes a drill rod 20 arranged on an adjusting bracket 10. The drill rod 20 is horizontal in its long direction and one end is connected to a horizontal driving mechanism. The drill rod 20 is located on the adjusting bracket. A plurality of drill rods 20 are arranged at parallel intervals on the upper part 10, and the horizontal driving mechanism drives the drill rod 20 to move horizontally and reciprocally and perform drilling operations. The spatial position of the drill rod 20 located on the adjustment bracket 10 is adjustable;

As shown in Figure 1, during actual blasting, this device is first used to carry out cutting and drilling into the area to be blasted according to the design drawings. The cutting and drilling mechanism itself is set on the adjusting bracket 10, and the spatial position of the adjusting bracket 10 can be adjusted. , so that the drill rod 20 can be easily adjusted to the position to be drilled, the horizontal moving mechanism is started, and the drill rod 20 moves horizontally reciprocally and performs drilling operations.

As a preferred solution of the present invention, as shown in FIG. 2 , the horizontal driving mechanism includes a cylinder 70 provided on the adjustment bracket 10 , a piston 71 is provided in the cylinder 70 , and the piston 71 divides the cylinder body of the cylinder 70 into two chambers. The rod end of the drill rod 20 is connected to one end of the piston 71. The drill rod 20 extends out of the cylinder body of the cylinder 70. The two chambers of the cylinder body of the cylinder 70 are connected to each other through pipelines. Air source connection;

A plurality of the above-mentioned drill rods 20 are arranged in parallel at one end of the piston 71, and can be set to three. During the actual drilling operation, high-pressure air is introduced into a chamber of the cylinder 70 to drive the piston 71, and then It can realize the simultaneous drilling of three holes, increase the number of cut holes per unit time, reduce the time of cut holes, ensure the uniformity of parallelism and angle between cut holes, and make the integrity of cut holes better. Well, the depth error along the blast hole is reduced, which improves the utilization rate of blasting energy, so that the energy generated by the explosive explosion can form an overall shearing effect and ensure the grooving effect.

In order to facilitate the discharge of rock powder in the blast hole, as shown in Figure 2, the drill rod 20 is a hollow tube structure, the piston 71 is provided with a water channel 711, and the water channel 711 is provided with a rod connected to the drill rod 20. The outlet is connected at both ends. The outlet is provided with a needle 72. The needle 72 is inserted at the connecting end of the drill rod 20 and the piston 71. The water path 711 is provided with an inlet connected to a high-pressure water source;

When the cylinder 70 is started, high-pressure water is synchronously introduced into the piston 71, and the high-pressure water is synchronously entered into the drill rod 20 through the needle 72, so that while drilling the hole, the high-pressure water can cut the rock mass in the hole on the one hand, and the rock mass in the hole on the other hand. The rock powder in the blast hole is discharged simultaneously.

Furthermore, as shown in FIG. 1 , the adjustment bracket 10 includes a support foot 11 , the height of the support foot 11 is adjustable, and a flange 12 is provided at the upper end of the support foot 11 . The flange 12 A first regulating pipe 13 is provided vertically. The lower end of the first regulating pipe 13 forms an adjustable rotational connection with the flange 12. The upper end of the first regulating pipe 13 is provided with a second regulating pipe 14. The second adjustment tube 14 forms an adjustable rotation connection with the first adjustment tube 13. The end of the second adjustment tube 14 extends horizontally and is provided with a third adjustment tube 15. The third adjustment tube 15 and the second adjustment tube 14 form Adjustable rotary connection, the cylinder body of the cylinder 70 is fixed on the pipe end of the third regulating pipe 15;

By adjusting the height of the support foot 11, the height of the drill rod 20 can be easily adjusted, and by rotating and adjusting the above-mentioned second adjustment tube 14 and the third adjustment tube 15, both the horizontal and vertical planes of the drill rod 20 can be adjusted. Adjustment in three dimensions allows the drill rod 20 to be adjusted to a designated drilling position to perform drilling operations.

Specifically, as shown in FIG. 3 , a first adjusting bolt 16 is provided at the connection between the second adjusting tube 14 and the first adjusting tube 13 , and the first adjusting bolt 16 passes through the first adjusting tube 13 and the second adjusting tube 13 . The outer wall of the adjusting tube 14 is in contact with each other. The third adjusting tube 15 and the second adjusting tube 14 are provided with a second adjusting bolt 17 . The second adjusting bolt 17 passes through the third adjusting tube 15 and the second adjusting tube 14 . against the outer wall;

As shown in FIG. 3 , the first adjustment tube 13 is inserted on the outer wall of the second adjustment tube 14 , and the inner wall of the first adjustment tube 13 is provided with a first convex ring. The second adjustment tube 14 The outer tube wall is provided with a first annular groove that matches the first convex ring, and the first adjusting bolt 16 passes through the first adjusting tube 13 and abuts against the bottom of the first annular groove of the second adjusting tube 14, thereby Realize the rotation connection and positioning of the two adjustment tubes;

In the same way, the third adjustment tube 15 is inserted on the outer tube wall of the second adjustment tube 14. The inner wall of the third adjustment tube 15 is provided with a second convex ring. The outer tube of the second adjustment tube 14 The wall is provided with a second annular groove that matches the second convex ring. The second adjusting bolt 17 passes through the third adjusting tube 15 and abuts against the bottom of the second annular groove of the second adjusting tube 14 . Thereby realizing the rotational connection and positioning of the two regulating tubes.

The piston 71 is provided with a piston rod 712. The rod end of the piston rod 712 is provided with a drill tail cylinder liner 713. The piston rod 712 and the drill tail cylinder liner 713 are connected through threads. The drill rod 20 is inserted in Inside the drill tail cylinder liner 713.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced, but these modifications or substitutions shall not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (3)

1. Coal mine rock tunnel triaxial slitting, drilling and breaking device is characterized in that: the drilling device comprises a drill rod (20) arranged on an adjusting bracket (10), wherein the length direction of the drill rod (20) is horizontal, one end of the drill rod is connected with a horizontal driving mechanism, a plurality of drill rods (20) are arranged on the adjusting bracket (10) at intervals in parallel, the horizontal driving mechanism drives the drill rod (20) to horizontally reciprocate and perform drilling operation, and the spatial position of the drill rod (20) on the adjusting bracket (10) is adjustable;

the horizontal driving mechanism comprises a cylinder (70) arranged on the adjusting bracket (10), a piston (71) is arranged in the cylinder (70), the piston (71) divides the cylinder body of the cylinder (70) into two chambers, the rod end of the drill rod (20) is connected with one end of the piston (71), the drill rod (20) extends out of the cylinder body of the cylinder (70), and the two chambers of the cylinder body of the cylinder (70) are respectively communicated with an air source through pipelines;

the drill rod (20) is of a hollow pipe structure, the piston (71) is provided with a waterway (711), the waterway (711) is provided with an outlet communicated with the rod end of the drill rod (20), the outlet is provided with a needle head (72), the needle head (72) is inserted into the connecting end of the drill rod (20) and the piston (71), and the waterway (711) is provided with an inlet communicated with a high-pressure water source;

the adjusting bracket (10) comprises supporting feet (11), the height of each supporting foot (11) is adjustable, a flange plate (12) is arranged at the upper end of each supporting foot (11), a first adjusting pipe (13) is vertically arranged on each flange plate (12), the lower end of each first adjusting pipe (13) and each flange plate (12) form adjustable rotary connection, a second adjusting pipe (14) is arranged at the upper end of each first adjusting pipe (13), the second adjusting pipes (14) and the first adjusting pipes (13) form adjustable rotary connection, the pipe ends of the second adjusting pipes (14) horizontally extend and are provided with third adjusting pipes (15), the third adjusting pipes (15) and the second adjusting pipes (14) form adjustable rotary connection, and the cylinder body of the cylinder (70) is fixed at the pipe ends of the third adjusting pipes (15);

the piston (71) is provided with a piston rod (712), the rod end of the piston rod (712) is provided with a drill shank cylinder sleeve (713), the piston rod (712) is connected with the drill shank cylinder sleeve (713) through threads, and the drill rod (20) is inserted into the drill shank cylinder sleeve (713).

2. The coal mine rock roadway triaxial slitting, drilling and breaking device according to claim 1, characterized in that: the junction of second governing pipe (14) and first governing pipe (13) is provided with first adjusting bolt (16), first adjusting bolt (16) pass first governing pipe (13) and the outer wall of second governing pipe (14) support, third governing pipe (15) are provided with second adjusting bolt (17) with second governing pipe (14), second adjusting bolt (17) pass third governing pipe (15) and the outer wall of second governing pipe (14) support.

3. The coal mine rock roadway triaxial slitting, drilling and breaking device according to claim 2, characterized in that: the first adjusting pipe (13) is inserted on the outer pipe wall of the second adjusting pipe (14), a first convex ring is arranged on the inner wall of the first adjusting pipe (13), a first annular groove matched with the first convex ring is arranged on the outer pipe wall of the second adjusting pipe (14), a first adjusting bolt (16) penetrates through the first adjusting pipe (13) to be abutted against the bottom of the first annular groove of the second adjusting pipe (14), a third adjusting pipe (15) is inserted on the outer pipe wall of the second adjusting pipe (14), a second convex ring is arranged on the inner wall of the third adjusting pipe (15), a second annular groove matched with the second convex ring is arranged on the outer pipe wall of the second adjusting pipe (14), and a second adjusting bolt (17) penetrates through the third adjusting pipe (15) to be abutted against the bottom of the second annular groove of the second adjusting pipe (14).