A small drilling device for blasting and drilling in coal mining

Abstract

This utility model provides a small drilling device for blasting and drilling in coal mines, including a movable base, a movable mechanism mounted on the movable base, a pneumatic drill, and a drill rod stabilizing mechanism. The movable mechanism includes a movable frame, two parallel connecting rails, a pneumatic telescopic rod, and a threaded rod fixedly connected to the shaft of the pneumatic motor. The bottom surface of the movable frame has a groove corresponding to the connecting rail, which mates with the connecting rail. The rear side of the base is fixedly connected to the front end of the pneumatic telescopic rod. The pneumatic drill is fixedly connected to the top center of the lifting plate of the movable frame. The drill rod stabilizing mechanism includes a fixed frame, a fixed ring, a ring rail, and a reinforcing frame. The fixed frame is fixedly connected to the top surface of the lifting plate, the fixed ring is fixedly connected to the front end surface of the fixed frame, the ring rail is fixedly connected to the front end surface of the fixed ring, and the reinforcing frame is mounted on the ring rail and fixedly connected to the drill rod. This device is compact and flexible, allowing for more flexible use and stable and rapid drilling operations.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining, and in particular relates to a small drilling device for blasting and drilling in coal mining. Background Technology

[0002] Coal mines are an important energy source and the foundation of a country's industrialization. my country is a major coal consumer, but most of its coal mines are underground, which is characterized by high difficulty and high risk. With the continuous development of science and technology, the level of underground coal mining in my country is getting higher and higher, and various equipment is developing towards intelligent mines, making coal mine production more efficient and safer.

[0003] In the coal mining process, drilling and blasting of the working face are often required. With the development of technology, underground drilling rigs have also evolved, such as multi-row drill rod drilling rigs and intelligent drilling rigs, which can efficiently complete drilling work. However, due to differences in size and complexity, these devices are mostly suitable for large-area drilling operations. In some narrow areas, workers need to manually drill additional holes using the drilling rigs. During manual drilling, due to the lack of effective auxiliary stabilizing structures, the drill rod of the drilling motor is prone to shaking, deviation, and other instability during high-speed rotation. This not only increases the roughness of the drilled hole wall and makes it difficult to guarantee the hole diameter accuracy, but also accelerates the wear of the drill rod and related components, leading to frequent failures, shortening the service life of the equipment, increasing maintenance costs, and increasing the frequency of equipment replacement. At the same time, after using large equipment for large-area mechanized drilling, there will inevitably be substandard holes that need to be corrected by manual drilling. Existing drilling rigs cannot meet these requirements. Utility Model Content

[0004] The purpose of this invention is to provide a small drilling device for blasting and drilling in coal mining. This device is compact and flexible, making it more versatile and enabling stable and rapid drilling operations.

[0005] To achieve the above objectives, the technical solution of this utility model is a small drilling device for blasting and drilling in coal mines, comprising a movable base, a moving mechanism mounted on the movable base, a pneumatic drill, and a drill rod stabilizing mechanism.

[0006] The movable base is equipped with casters at the four corners of its bottom.

[0007] The moving mechanism includes a moving frame, two parallel connecting rails, and a pneumatic telescopic rod. The connecting rails and the pneumatic telescopic rod are fixedly connected to the top surface of the moving base. The pneumatic telescopic rod is located behind the connecting rails. A threaded rod is fixedly connected to the shaft of the pneumatic motor. The moving frame includes a base plate, longitudinal plates vertically fixed to both ends of the base plate, and a lifting plate. The top surface of the base plate is fixedly connected to the pneumatic motor. The bottom surface of the base plate has a groove corresponding to the connecting rail, which mates with the connecting rail. The middle of the rear side of the base is fixedly connected to the front end of the pneumatic telescopic rod for moving the moving frame along the connecting rails. Lifting sleeves are fixedly connected to both ends of the lifting plate, and the lifting sleeves slide on the longitudinal plates. Threaded holes are opened on the lifting plate corresponding to the threaded rod, which mate with the threaded rod. A pneumatic drill is fixedly connected to the middle of the top surface of the lifting plate.

[0008] The drill rod stabilization mechanism includes a fixed frame, a fixed ring, a ring rail, and a reinforcing frame. The fixed frame is fixedly connected to the top surface of the lifting plate, and the pneumatic drill is located inside it. The fixed ring is fixedly connected to the front end face of the fixed frame, and the ring rail is fixedly connected to the front end face of the fixed ring. The centers of the fixed ring and the ring rail are coaxially arranged with the drill rod of the pneumatic drill. The reinforcing frame includes a reinforcing plate and reinforcing rods vertically fixed to both sides of the reinforcing plate. A reinforcing sleeve is fixedly connected to the bottom of the reinforcing rod, and the reinforcing sleeve is slidably connected to the ring rail. The reinforcing plate of the reinforcing frame has a drill rod fixing hole corresponding to the drill rod, and the drill rod fixing hole is fixedly connected to the drill rod.

[0009] The longitudinal plate is provided with a number of positioning holes at equal intervals along the axis, and the lifting sleeve is provided with a locking hole corresponding to the positioning hole. The locking hole and the positioning hole are locked by a positioning pin.

[0010] The base of the mobile frame has stabilizing plates horizontally arranged on the front and rear sides at both ends, and vibration damping rubber pads are arranged on the bottom surface of the stabilizing plates.

[0011] A push handle is fixedly connected to the rear of the movable base.

[0012] A stop block is fixedly connected to the upper end of the threaded rod.

[0013] The mobile frame is equipped with a dustproof and waterproof outer shell, and a drill rod outlet is provided on the dustproof and waterproof outer shell.

[0014] A tapered transition rubber ring is provided between the drill rod fixing hole and the drill rod, with the large-diameter section of the tapered transition rubber ring located inside the drill rod fixing hole.

[0015] The inner wall of the lifting sleeve is provided with a vibration damping rubber ring.

[0016] This invention features a simple, compact, and flexible structure. Its drill bit has both lateral and longitudinal movement capabilities, making it primarily suitable for temporary supplementary drilling operations. A drill rod stabilization mechanism provides guiding support and effectively reduces drill rod vibration during operation, thereby improving drill rod stability. It is particularly suitable for supplementary and repair drilling operations following rapid hole laying in large machinery. Attached Figure Description

[0017] Figure 1 is a three-dimensional structural schematic diagram of this utility model;

[0018] Figure 2 is a three-dimensional schematic diagram of the drilling mechanism of this utility model;

[0019] Figure 3 is a three-dimensional schematic diagram of the drilling mechanism of this utility model;

[0020] Figure 4 is a top-view perspective of the present invention;

[0021] Figure 5 is an enlarged three-dimensional schematic diagram of area A in Figure 2 of this utility model.

[0022] In the diagram: 1. Movable base plate; 2. Movable frame; 21. Base plate; 22. Drill bit; 23. Reinforcing plate; 24. Ring rail; 25. Fixed ring; 26. Fixed frame; 27. Pneumatic drill; 28. Lifting plate; 29. ​​Lifting sleeve; 210. Pneumatic motor; 211. Threaded rod; 212. Reinforcing rod; 213. Reinforcing sleeve; 3. Movable mechanism; 31. Pneumatic telescopic rod; 32. Connecting rail; 33. Connecting plate; 4. Movable wheel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] As shown in Figures 1-5, a small drilling device for blasting and drilling in coal mining includes a movable base 1, a moving mechanism 3 mounted on the movable base, a pneumatic drill 27, and a drill rod stabilizing mechanism. The movable base 1 has four movable wheels 4 at its bottom corners, and the movable wheels have a self-locking function. This self-locking structure can adopt any type of movable wheel self-locking structure available on the market. A push handle is fixedly connected to the rear of the movable base to facilitate workers to push it. The movable base can be appropriately weighted to ensure the overall stability of the equipment.

[0025] The moving mechanism 3 includes a moving frame 2, two parallel connecting rails 32, and a pneumatic telescopic rod 31. The connecting rails 32 and the pneumatic telescopic rod 31 are fixedly connected to the top surface of the moving base 1. The pneumatic telescopic rod is located behind the connecting rails 32. A threaded rod 211 is fixedly connected to the shaft of the pneumatic motor 210. A stop block is fixedly connected to the upper end of the threaded rod to limit the lifting plate and prevent it from separating from the threaded rod. The moving frame 2 includes a base plate 21, longitudinal plates vertically fixed to both ends of the base plate 21, and a lifting plate 28. The pneumatic motor 210 is fixedly connected to the top surface of the base plate 21. The bottom surface of the base plate 21 has a groove corresponding to the connecting rail, which cooperates with the connecting rail 32. The middle of the rear side of the base 21 is fixedly connected to the front end of the pneumatic telescopic rod 31 to move the moving frame 2 along the connecting rail. Lifting sleeves 29 are fixedly connected to both ends of the lifting plate 28. The sliding sleeve is mounted on the longitudinal plate. A vibration-damping rubber ring is provided on the inner wall of the lifting sleeve. Threaded holes are provided on the lifting plate corresponding to the threaded rod positions, and these holes mate with the threaded rod. A pneumatic drill 27 is fixedly connected to the center of the top surface of the lifting plate. Several positioning holes are evenly spaced along the axis of the longitudinal plate. A locking hole is provided on the lifting sleeve corresponding to each positioning hole. The locking hole and the positioning hole are locked together by a positioning pin. The main purpose is to ensure the stability of the lifting plate. Preferably, as shown in Figure 1, stabilizing plates are horizontally mounted on the front and rear sides of the left and right ends of the base of the moving frame. Vibration-damping rubber pads are provided on the bottom surface of the stabilizing plates to improve the stability of the moving frame and reduce vibrations caused by the rotation of the drill bit. Figure 4 The middle section shows the section without added stabilizing plates, which is mainly determined by the geological conditions of the surrounding rock. Adding stabilizing plates improves stability.

[0026] The drill rod stabilization mechanism includes a fixed frame 26, a fixed ring 25, a ring rail 24, and a reinforcing frame. The fixed frame 26 is fixedly connected to the top surface of the lifting plate 28, and the pneumatic drill 27 is located inside it. The fixed ring 25 is fixedly connected to the front end face of the fixed frame 26, and the ring rail 24 is fixedly connected to the front end face of the fixed ring 25. The center of the fixed ring 25 and the ring rail 24 are coaxially arranged with the drill rod of the pneumatic drill 27. The reinforcing frame includes a reinforcing plate 23 and reinforcing rods 212 vertically fixed on both sides of the reinforcing plate. A reinforcing sleeve 213 is fixedly connected to the bottom of the reinforcing rod 212, and the reinforcing sleeve 213 is slidably connected to the ring rail 24. The reinforcing plate of the reinforcing frame is provided with a drill rod fixing hole corresponding to the drill rod. A conical transition rubber ring is provided between the drill rod fixing hole and the drill rod. The large diameter section of the conical transition rubber ring is located inside the drill rod fixing hole. The conical transition rubber ring is used to reduce the impact of vibration caused by drill bit rotation on the equipment. The drill pipe stabilization mechanism uses a reinforcing frame that rotates with the drill bit, and then the reinforcing frame is confined to rotating on a circular track. This confines the drill pipe, reducing radial offset caused by its rotation and ensuring stable drilling. Another advantage of this structure is its lightweight design; the drill pipe does not require additional auxiliary support devices, and vibration damping components reduce the impact of drill pipe vibration on the equipment, improving equipment stability.

[0027] The mobile frame 2 is equipped with a dustproof and waterproof outer shell, and the drill rod outlet is provided on the dustproof and waterproof outer shell. Only the drill rod and the drill bit 22 at the front end extend out of the dustproof and waterproof outer shell, which reduces the impact of slag and cooling water on the device during drilling. Since this application does not involve the improvement of the drill rod cooling water mechanism, its structure will not be described in detail.

[0028] In use, after the large hole-laying mechanism lays out the holes according to the design, the construction personnel carry out construction on the locations where drilling cannot be carried out by the large hole-laying mechanism or the holes that fail the inspection. The construction personnel move the device to the construction position, lock the moving wheels, connect the relevant equipment to the underground air supply pipeline, start the pneumatic motor to control the lifting plate to drive the pneumatic drill to the drilling position, and then start the pneumatic drill to start drilling. During the drilling process, the pneumatic telescopic rod pushes the moving frame forward continuously, controlling the drilling depth until the drilling is completed. Throughout the drilling process, the drill rod stabilizing mechanism reduces the deviation and vibration of the drill rod, ensuring the drilling quality.

Claims

1. A small drilling device for blasting and drilling in coal mining, characterized in that, Includes a mobile base, a moving mechanism mounted on the mobile base, a pneumatic drill, and a drill rod stabilizing mechanism. The movable base is equipped with casters at the four corners of its bottom. The moving mechanism includes a moving frame, two parallel connecting rails, and a pneumatic telescopic rod. The connecting rails and the pneumatic telescopic rod are fixedly connected to the top surface of the moving base. The pneumatic telescopic rod is located behind the connecting rails. A threaded rod is fixedly connected to the shaft of the pneumatic motor. The moving frame includes a base plate, longitudinal plates vertically fixed to both ends of the base plate, and a lifting plate. The top surface of the base plate is fixedly connected to the pneumatic motor. The bottom surface of the base plate has a groove corresponding to the connecting rail, which mates with the connecting rail. The middle of the rear side of the base is fixedly connected to the front end of the pneumatic telescopic rod for moving the moving frame along the connecting rails. Lifting sleeves are fixedly connected to both ends of the lifting plate, and the lifting sleeves slide on the longitudinal plates. Threaded holes are opened on the lifting plate corresponding to the threaded rod, which mate with the threaded rod. A pneumatic drill is fixedly connected to the middle of the top surface of the lifting plate. The drill rod stabilization mechanism includes a fixed frame, a fixed ring, a ring rail, and a reinforcing frame. The fixed frame is fixedly connected to the top surface of the lifting plate, and the pneumatic drill is located inside it. The fixed ring is fixedly connected to the front end face of the fixed frame, and the ring rail is fixedly connected to the front end face of the fixed ring. The centers of the fixed ring and the ring rail are coaxially arranged with the drill rod of the pneumatic drill. The reinforcing frame includes a reinforcing plate and reinforcing rods vertically fixed to both sides of the reinforcing plate. A reinforcing sleeve is fixedly connected to the bottom of the reinforcing rod, and the reinforcing sleeve is slidably connected to the ring rail. The reinforcing plate of the reinforcing frame has a drill rod fixing hole corresponding to the drill rod, and the drill rod fixing hole is fixedly connected to the drill rod.

2. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, The longitudinal plate is provided with a number of positioning holes at equal intervals along the axis, and the lifting sleeve is provided with a locking hole corresponding to the positioning hole. The locking hole and the positioning hole are locked by a positioning pin.

3. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, The base of the mobile frame has stabilizing plates horizontally arranged on the front and rear sides at both ends, and vibration damping rubber pads are arranged on the bottom surface of the stabilizing plates.

4. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, A push handle is fixedly connected to the rear of the movable base.

5. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, A stop block is fixedly connected to the upper end of the threaded rod.

6. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, The mobile frame is equipped with a dustproof and waterproof outer shell, and a drill rod outlet is provided on the dustproof and waterproof outer shell.

7. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, A tapered transition rubber ring is provided between the drill rod fixing hole and the drill rod, with the large-diameter section of the tapered transition rubber ring located inside the drill rod fixing hole.

8. The small drilling device for blasting and drilling in coal mining according to claim 1, characterized in that, The inner wall of the lifting sleeve is provided with a vibration damping rubber ring.

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