Drill rod fixing mechanism of down-the-hole drill

Abstract

The utility model discloses a drill rod fixing mechanism of a down-the-hole drill, and belongs to the technical field of down-the-hole drills. The drill rod fixing mechanism of the down-the-hole drill comprises a drill rod, a guide rail assembly located on one side of the drill rod and a fixing mechanism connected with the drill rod in a penetrating mode, the fixing mechanism is composed of a bearing and a fixing disc, a bearing chamber is formed in the center of the fixing disc, and the bearing is installed in the bearing chamber. The down-the-hole drill solves the problem that when an existing down-the-hole drill drills holes, the safety and firmness of a drill rod cannot be guaranteed, when the down-the-hole drill is used, the drill rod is large in stress when the drill is started for drilling operation, the fixing mechanism on the drill rod can improve the stability of the drill rod in the working process, the friction force between the fixing mechanism and the drill rod can be reduced through the bearing, the drilling operation is not affected, and the service life of the drill rod is prolonged. The firmness degree between the bolt and the screw hole is adjusted, the tightness of the crack changes, the fixing hole also changes along with the crack, meanwhile, the stability degree of the fixing mechanism is increased, and therefore the stability of the drill rod is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of down-the-hole drills, in particular to a drill rod fixing mechanism for down-the-hole drills. Background Art

[0002] Down-the-hole drills are mainly used for rock drilling in open-pit mining and other projects. The essence of down-the-hole drilling is to make the impactor dive into the hole during the drilling process to reduce the energy loss caused by the impact work transmitted by the drill rod, thereby reducing the influence of hole depth on drilling efficiency.

[0003] Common down-the-hole drills have certain safety hazards because the drill rod mainly relies on itself as a support point and the drill rod cannot be safe and firm during operation.

[0004] In summary, how to solve the problem of being unable to ensure the safety and firmness of the drill rod during drilling is a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a drill rod fixing mechanism for a down-the-hole drill, which stabilizes the drill rod through the fixing mechanism, thereby improving the stability of the drill rod and ensuring that there are no safety hazards during drilling.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drill rod fixing mechanism of a down-the-hole drilling rig, comprising a drill rod, and also comprising a guide rail assembly located on one side of the drill rod and a fixing mechanism connected by the drill rod, the fixing mechanism consisting of a bearing and a fixing plate, a bearing chamber is provided at the center of the fixing plate, and the bearing is installed in the bearing chamber;

[0007] The upper end of the drill rod is connected to a rotary power head, the lower end of the drill rod is connected to an impactor, and the lower end of the impactor is connected to a drill protector;

[0008] Three identical fixing rods are installed between the rotary power head and the drill protector.

[0009] Preferably, the drill rod passes through the fixing mechanism, the fixing plate is provided with three fixing holes, the edges of the fixing plate are provided with slits respectively, screw holes are provided on both sides of the slits, and bolts are threadedly passed through the screw holes.

[0010] Preferably, a rotary power head is slidably connected to the upper side of the guide rail assembly, and a drill protector is installed on the lower side of the guide rail assembly.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model discloses a drill rod fixing mechanism for a down-the-hole drilling rig. When the drilling rig is in use, the rotary power head drives the square drill rod, thereby driving the drill rod, and the drill rod drives the impactor and the drill bit to perform a drilling operation. The kinetic energy of the drilling operation is too large, and the drill rod is subjected to a large force. The fixing mechanism on the drill rod can improve the stability of the drill rod when it is working, wherein the bearing can reduce the friction between the fixing mechanism and the drill rod, does not affect the drilling operation, thereby further improving the stability of the drill rod and preventing safety hazards from occurring when the drilling rig is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the whole of the utility model;

[0014] Figure 2 A three-dimensional diagram of the drilling rig of the utility model;

[0015] Figure 3 It is a schematic diagram of the fixing mechanism of the utility model.

[0016] In the figure: 1. drill rod; 12. rotary power head; 13. impactor; 14. drill protector; 2. fixing mechanism; 21. bearing; 22. fixing plate; 221. bearing chamber; 222. fixing hole; 223. gap; 224. screw hole; 225. bolt; 23. fixing rod; 3. guide rail assembly. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 A drill rod fixing mechanism for a down-the-hole drilling rig includes a drill rod 1, a guide rail assembly 3 located on one side of the drill rod and a fixing mechanism 2 connected through the drill rod 1, the fixing mechanism 2 is composed of a bearing 21 and a fixing plate 22, a bearing chamber 221 is provided at the center of the fixing plate 22, the bearing 21 is installed in the bearing chamber 221, the upper end of the drill rod 1 is connected to a rotary power head 12, the lower end of the drill rod 1 is connected to an impactor 13, the lower end of the impactor 13 is connected to a drill protector 14, three identical fixing rods 23 are installed between the rotary power head 12 and the drill protector 14, the drill rod 1 passes through the bearing 21 in the fixing mechanism 2, the bearing 21 reduces the friction generated by the protection of the fixing mechanism 2 when the drill rod is working, and will not affect the working efficiency, the fixing rod 23 between the rotary power head 12 and the drill protector 14 further stabilizes the drilling rig as a whole.

[0019] Furthermore, the drill rod 1 passes through the fixing mechanism 2, and the fixing plate 22 has three fixing holes 222. The edges of the fixing plate 22 have slits 223, and screw holes 224 are provided on both sides of the slits 223. Bolts 225 are threadedly passed through the screw holes 224. The three fixing holes 222 are respectively connected to the fixing rod 23. The slits 223 can be tightened between the bolts 225 and the screw holes 224 to reduce the size of the fixing holes 222, thereby increasing the stability of the entire fixing mechanism 2.

[0020] Furthermore, a rotary power head 12 is slidably connected to the upper side of the guide rail assembly 3, and a drill protector 14 is installed on the lower side of the guide rail assembly 3. The rotary power head 12 and the drill protector 14 are inherent devices of the drilling rig.

[0021] Working principle: The utility model is a drill rod fixing mechanism for a down-the-hole drilling rig. When the drilling rig is started, the rotary power head 12 drives the drill rod, and the drill rod drives the impactor and the drill bit to perform drilling operations. The kinetic energy of the drilling operation is too large, and the drill rod 1 is subjected to large force. The fixing mechanism 2 on the drill rod 1 can improve the stability of the drill rod 1 during operation. First, the firmness between the bolt 225 and the screw hole 224 is adjusted, and the gap 223 is changed in tightness accordingly. The fixing hole 222 can move up and down on the fixing rod 23, thereby changing the position of the fixing mechanism 2 on the drill rod 1. At the same time, the stability of the fixing mechanism 2 on the drilling rig can also be increased. When the drill rod 1 is working, the bearing 21 can reduce the friction between the fixing mechanism 2 and the drill rod 1, does not affect the drilling operation, and increases the overall practicality.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill rod fixing mechanism for a down-the-hole drilling rig, comprising a drill rod (1), characterized in that: It also includes a guide rail assembly (3) located on one side of the drill rod and a fixing mechanism (2) connected to and penetrated by the drill rod (1), the fixing mechanism (2) consisting of a bearing (21) and a fixing plate (22), a bearing chamber (221) being provided at the center of the fixing plate (22), and the bearing (21) being installed in the bearing chamber (221); The upper end of the drill rod (1) is connected to a rotary power head (12), the lower end of the drill rod (1) is connected to an impactor (13), and the lower end of the impactor (13) is connected to a drill protector (14); Three identical fixing rods (23) are installed between the rotary power head (12) and the drill protector (14).

2. A down-the-hole drill rod fixing mechanism according to claim 1, characterized in that: The drill rod (1) passes through the fixing mechanism (2); the fixing plate (22) is provided with three fixing holes (222); edges of the fixing plate (22) are respectively provided with slits (223); screw holes (224) are provided on both sides of the slits (223); and bolts (225) are threadedly passed through the screw holes (224).

3. A down-the-hole drill rod fixing mechanism according to claim 1, characterized in that: The upper side of the guide rail assembly (3) is slidably connected to a rotary power head (12), and the lower side of the guide rail assembly (3) is equipped with a drill protector (14).

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