Drilling device for mining machinery

Abstract

The utility model discloses a mining machinery drilling device which comprises a drill rod and a drill bit, the lower end of the drill rod is fixedly connected with an expansion head, the drill bit is sleeved on the expansion head, and an insertion block is inserted in the lower portion of the expansion head. A crowbar is matched with the lower part of the inserting block. And a slot is formed in the expansion head. The inserting block comprises an inserting rod, the side portion of the inserting rod is fixedly connected with a mud blocking piece, and the lower end of the inserting rod is fixedly connected with a stopping block. The insertion block further comprises a guide head which is fixedly connected to the upper end of the insertion rod. The inserting block further comprises a guide strip which is fixedly connected to the upper end of the mud blocking piece. The crowbar comprises a bar body, after a drill bit is arranged on an expansion head in a sleeving mode, an insertion block is plugged into the expansion head, then the insertion block is driven into the expansion head through a hammer, the insertion block acts on the expansion head outwards, the expansion head expands outwards in a slight amplitude mode, and therefore the expansion head and the drill bit are fixed, and the expansion head and the drill bit are fixed in a slight expansion mode of the expansion head. The drill mounting difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining drilling equipment, and in particular relates to a mining machinery drilling device. Background Technology

[0002] Down-the-hole drills are commonly used for open-pit and underground drilling operations in rocks of medium hardness or less. During operation, the drill bit plunges into the bottom of the hole, and the rock is broken by the impact force generated by the impactor. Compressed air or a mixture of air and water is used to remove the slag.

[0003] Drill bits for drilling rigs are usually connected by a sleeve joint. Because the drill bit needs considerable friction with the drill rod, the installation friction is quite high, which makes the installation of conventional drill bits quite difficult.

[0004] To address this problem, we propose a drilling device for mining machinery. Utility Model Content

[0005] The purpose of this invention is to solve the problem of the high difficulty in installing conventional drill bits, and to propose a drilling device for mining machinery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drilling device for mining machinery includes a drill rod and a drill bit. An expansion head is fixedly connected to the lower end of the drill rod. The drill bit is fitted onto the expansion head, and a insert block is inserted into the lower part of the expansion head. After the drill bit is fitted onto the expansion head, the insert block is inserted into the expansion head. Then, a hammer is used to drive the insert block into the expansion head. The insert block acts outward on the expansion head, causing it to expand slightly outward, thereby fixing the expansion head and the drill bit. This method of fixing the expansion head and the drill bit through slight expansion reduces the difficulty of drill bit installation.

[0008] Preferably, the lower part of the insert block is fitted with a pry bar. The upper part of the pry bar is locked onto the lower part of the insert block, and then the insert block is pried open by the pry bar to pull the insert block out of the expansion head, so that the expansion head returns to its original position, thereby reducing the resistance of the expansion head and the drill bit, and then the drill bit can be removed for easy removal.

[0009] Preferably, the expansion head has a slot inside. The slot facilitates the docking of the insert block with the expansion head.

[0010] Preferably, the insert includes an insert rod, a mudguard is fixedly connected to the side of the insert rod, and a stop block is fixedly connected to the lower end of the insert rod. The upper part of the pry bar is locked onto the stop block, and then the stop block is pried open by the pry bar, so that the stop block acts on the insert rod, and the insert rod is pulled out from the expansion head.

[0011] Preferably, the insert block further includes a guide head, which is fixedly connected to the upper end of the insert rod. The guide head facilitates the guidance of the insert rod into the slot.

[0012] Preferably, the insert block further includes a guide strip, which is fixedly connected to the upper end of the mudguard. The guide strip facilitates the guidance of the mudguard into the expansion head.

[0013] Preferably, the crowbar includes a rod body, and a Y-shaped claw is fixedly connected to the upper end of the rod body. The Y-shaped claw facilitates the docking of the crowbar with the insert block.

[0014] Preferably, a U-shaped striking block is fixedly connected to the lower end of the rod. The U-shaped striking block is placed over the drill rod, and then a downward strike is applied to the drill bit, making it easier to knock the drill bit off.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. After placing the drill bit on the expansion head, insert the insert block into the expansion head, and then use a hammer to drive the insert block into the expansion head. The insert block acts outward on the expansion head, causing the expansion head to expand slightly outward, thereby fixing the expansion head and the drill bit. Fixing the expansion head and the drill bit by slightly expanding the expansion head reduces the difficulty of drill bit installation.

[0017] 2. Secure the upper part of the pry bar to the lower part of the insert block, then pry the insert block with the pry bar to pull it out of the expansion head, allowing the expansion head to return to its original position. This reduces the resistance of the expansion head and the drill bit, making it easier to remove the drill bit.

[0018] 3. Place the U-shaped striking block over the drill rod and then strike downwards onto the drill bit to knock it off. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the expansion head structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the insert structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the crowbar structure of this utility model.

[0023] In the diagram: 1. Drill rod; 2. Expansion head; 3. Insertion block; 4. Crowbar; 5. Drill bit; 21. Slot; 31. Guide head; 32. Insertion rod; 33. Mudguard; 34. Guide bar; 35. Stop block; 41. Rod body; 42. Y-shaped claw; 43. U-shaped striking block. Detailed Implementation

[0024] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0025] like Figure 2 As shown, a drilling device for mining machinery includes a drill rod 1 and a drill bit 5. An expansion head 2 is fixedly connected to the lower end of the drill rod 1, the drill bit 5 is sleeved on the expansion head 2, and a plug block 3 is inserted into the lower part of the expansion head 2.

[0026] like Figure 1 As shown, a crowbar 4 is fitted to the lower part of the insert 3.

[0027] like Figure 1 and 2 As shown, the expansion head 2 has a slot 21 inside. The slot 21 is used to mate with the middle part of the plug block 3.

[0028] like Figure 1 and 3 As shown, the insert 3 includes an insert rod 32, a mudguard 33 is fixedly connected to the side of the insert rod 32, and a stop block 35 is fixedly connected to the lower end of the insert rod 32. The insert rod 32 is inserted into the slot 21, the mudguard 33 is embedded in the interior of the expansion head 2, and the stop block 35 is engaged with the pry bar 4.

[0029] like Figure 1 and 3 As shown, the insert block 3 also includes a guide head 31, which is fixedly connected to the upper end of the insert rod 32. The guide head 31 is used to guide the insert rod 32 into the slot 21.

[0030] like Figure 1 and 3 As shown, the insert block 3 also includes a guide strip 34, which is fixedly connected to the upper end of the mudguard 33. The guide strip 34 is used to guide the mudguard 33 into the expansion head 2.

[0031] like Figure 1 and 4 As shown, the crowbar 4 includes a rod body 41, and a Y-shaped claw 42 is fixedly connected to the upper end of the rod body 41. The Y-shaped claw 42 is mated with the stop block 35.

[0032] like Figure 4 As shown, a U-shaped striking block 43 is fixedly connected to the lower end of the rod 41. The U-shaped striking block 43 is sleeved and matched with the drill rod 1.

[0033] Working principle: After the drill bit 5 is placed on the expansion head 2, the insert block 3 is inserted into the expansion head 2. Then, the insert block 3 is driven into the expansion head 2 with the help of a hammer. The insert block 3 acts outward on the expansion head 2, causing the expansion head 2 to expand slightly outward, thereby fixing the expansion head 2 and the drill bit 5. The expansion head 2 and the drill bit 5 are fixed by the slight expansion of the expansion head 2, which reduces the difficulty of installing the drill bit 5.

[0034] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.

[0035] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.

Claims

1. A drilling device of a mining machine, comprising a drill rod (1) and a drill bit (5), characterized in that: The lower end of the drill rod (1) is fixedly connected with an expansion head (2), the drill bit (5) is sleeved on the expansion head (2), and the lower part of the expansion head (2) is inserted with an insertion block (3).

2. A drilling apparatus for a mining machine according to claim 1, characterized in that: The lower part of the insertion block (3) is matched with a crowbar (4).

3. A drilling apparatus for a mining machine according to claim 1, characterized in that: The inside of the expansion head (2) is provided with an insertion slot (21).

4. A drilling apparatus for a mining machine according to claim 2, wherein: The insertion block (3) comprises an insertion rod (32), the side of the insertion rod (32) is fixedly connected with a mud baffle (33), and the lower end of the insertion rod (32) is fixedly connected with a stop block (35).

5. A drilling apparatus for a mining machine according to claim 4 wherein: The insertion block (3) further comprises a guide head (31), and the guide head (31) is fixedly connected to the upper end of the insertion rod (32).

6. A drilling apparatus for a mining machine according to claim 4 wherein: The insertion block (3) further comprises a guide strip (34), and the guide strip (34) is fixedly connected to the upper end of the mud baffle (33).

7. A drilling apparatus for a mining machine according to claim 2, wherein: The crowbar (4) comprises a rod body (41), and the upper end of the rod body (41) is fixedly connected with a Y-shaped claw (42).

8. A drilling apparatus for a mining machine according to claim 7, characterized in that: The lower end of the rod body (41) is fixedly connected with a U-shaped knocking block (43).

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