Special drill bit for anti-impact ground pressure

Abstract

The present invention discloses a special drill bit for preventing impact ground pressure, comprising a drill rod and a blade, a spiral blade being fixed on one side of the drill rod, wherein a first limit block is fixed on one end of the drill rod, a connecting block is provided on one end of the drill rod, a mounting hole is provided on one side of the connecting block, a first extrusion groove is provided on one end of the connecting block close to the drill rod, a first spring is installed between the first extrusion groove and the drill rod, and a first limit groove is provided on one side of the first extrusion groove close to the first limit block. The special drill bit for preventing impact ground pressure is provided with a drill bit that generates impact when working, the drill bit will squeeze the drill rod when impacted, the drill rod will be driven to move when squeezed, the first limit block can slide with the first limit groove when moving, the drill rod can squeeze the first spring at the same time, the first spring can reduce the impact force of the drill bit by its own elastic force when squeezed, so that the drill bit can be conveniently used for preventing impact when in use.

Description

Technical Field

[0001] The invention relates to the technical field of soil exploration equipment, in particular to a special drill bit for preventing impact ground pressure. Background Art

[0002] The drill bit for ground pressure is also called spiral drill bit. The cutting tool used in the soil spiral drill bit is a shovel-shaped wear-resistant alloy bucket tooth plus a pick. It is mainly used for non-circulation drilling in soil layers above the groundwater level, sandy soil layers, dense sand layers containing a small amount of clay, and sand and gravel layers with small particle sizes. The structure is a straight spiral, and there are three types: bullet-head single spiral, double-head single spiral, and double-head double spiral. The single spiral drill bit is easy to clean and has low rotation resistance, so it is suitable for drilling gravel layers and clay layers with good cementation. The double spiral drill bit has strong soil carrying capacity and good guiding performance, and is suitable for drilling loose strata and soft and hard interlayer strata.

[0003] At present, there are many defects in the special drill bits for ground pressure on the market. They do not have anti-impact function, the blades are not convenient to install, and the sliders are not convenient to position. Therefore, there is an urgent need in the market for technology that can improve the structure of special drill bits for anti-impact ground pressure to improve this equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a special drill bit for anti-impact ground pressure, so as to solve the problems raised in the above background technology that the special drill bits for ground pressure currently on the market have many defects, such as lack of anti-impact function, inconvenient installation of the blade, and inconvenient positioning of the blade.

[0005] To achieve the above object, the present invention provides the following technical solution: a special drill bit for preventing impact ground pressure, comprising a drill rod and a blade, wherein a spiral blade is fixed on one side of the drill rod, wherein:

[0006] A first limiting block is fixed to one end of the drill rod, a connecting block is provided at one end of the drill rod, a mounting hole is provided on one side of the connecting block, a first extrusion groove is provided on one end of the connecting block close to the drill rod, a first spring is installed between the first extrusion groove and the drill rod, a first limiting groove is provided on one side of the first extrusion groove close to the first limiting block, a drill bit is fixed to the other end of the drill rod, a fixing block is fixed to one side of the drill bit, a connecting groove is provided on one side of the fixing block, and second limiting grooves are provided on both sides of the connecting groove;

[0007] A second limiting block is embedded in the second limiting groove, a closing plate is fixed between the second limiting blocks, a pulling block is fixed on one side of the closing plate, a clamping groove is provided on one side of the closing plate, a second extrusion groove is provided on one side of the fixed block close to the clamping groove, a second spring is installed in the second extrusion groove, a steel ball is fixed on one side of the second spring, a sliding groove is provided in the fixed block close to the connecting groove, a slider is embedded in the sliding groove, and the blade is fixed on one side of the slider.

[0008] Preferably, two groups of the first limiting blocks and the first limiting grooves are provided, and the first limiting blocks and the first limiting grooves are slidably connected, and the maximum sliding distance of the first limiting blocks does not exceed the length of the first limiting grooves themselves.

[0009] Preferably, the first extrusion groove and the drill rod are both cylindrical, and the diameter of the first extrusion groove is the same as the diameter of the drill rod, and a telescopic structure is formed between the first extrusion groove and the drill rod through a first spring.

[0010] Preferably, the connecting groove and the closing plate are both rectangular, and the size of the connecting groove matches the size of the closing plate, and a sliding connection is formed between the closing plate and the second limiting groove via a second limiting block.

[0011] Preferably, the engaging groove, the second extrusion groove, the second spring and the steel ball are arranged in four groups, and the engaging groove is arc-shaped, and the arc shape of the engaging groove matches the arc shape of the steel ball, and a telescopic structure is formed between the second extrusion groove and the steel ball through the second spring.

[0012] Preferably, two groups of the slide grooves and the sliders are provided, and the slide grooves and the sliders are slidably connected.

[0013] Compared with the prior art, the invention has the following beneficial effects: the special drill bit for preventing ground impact pressure:

[0014] 1. The drill bit generates impact when working, and when the drill bit is impacted, the drill rod is squeezed, and when the drill rod is squeezed, the first limit block is driven to move, and when the first limit block moves, it can slide with the first limit groove, and when the drill rod is squeezed, the first spring can be squeezed, and when the first spring is squeezed, the impact force of the drill bit can be reduced by its own elastic force, so that the drill bit can be prevented from impact when in use;

[0015] 2. A slider is provided to dock the blade with the slide slot by pulling it, so that when the slider docks with the slide slot, the blade can be pushed to make the slider and the slide slot slide. When the slider slides to one end of the slide slot, the pulling block can be pushed to make the closing plate close the connecting slot, so that the blade can be quickly installed;

[0016] 3. A closing plate is provided which can be moved by pushing and pulling the block, so that the closing plate can drive the second limit block to move when it moves, and the second limit block can slide with the second limit groove when it moves, and the steel ball can be squeezed while the closing plate moves, and the steel ball will squeeze the second spring when it is squeezed, and when the steel ball is squeezed into the inside of the second spring, the closing plate will drive the engaging groove to move to the position of the steel ball, and when the engaging groove moves to the position of the steel ball, the steel ball can be reset by the elastic force of the second spring itself, and after the steel ball is reset, the engaging groove can be squeezed and fixed, so that the blade can be positioned after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front structural schematic diagram of the present invention;

[0018] Figure 2 It is a side view structural schematic diagram of the present invention;

[0019] Figure 3 It is a schematic diagram of the enlarged structure of part A of the present invention;

[0020] Figure 4 It is a schematic diagram of the enlarged structure of part B of the present invention.

[0021] In the figure: 1. drill rod; 2. spiral blade; 3. first limit block; 4. connecting block; 5. mounting hole; 6. first extrusion groove; 7. first spring; 8. first limit groove; 9. fixing block; 10. connecting groove; 11. second limit groove; 12. second limit block; 13. closing plate; 14. pulling block; 15. engaging groove; 16. second extrusion groove; 17. second spring; 18. steel ball; 19. slide groove; 20. slider; 21. blade; 22. drill bit. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention provides a technical solution: a special drill bit for preventing impact ground pressure, comprising a drill rod 1, a spiral blade 2, a first limit block 3, a connecting block 4, a mounting hole 5, a first extrusion groove 6, a first spring 7, a first limit groove 8, a fixing block 9, a connecting groove 10, a second limit groove 11, a second limit block 12, a closing plate 13, a pulling block 14, a clamping groove 15, a second extrusion groove 16, a second spring 17, a steel ball 18, a slide groove 19, a slider 20, a blade 21 and a drill bit 22, wherein a spiral blade 2 is fixed on one side of the drill rod 1, wherein,

[0024] A first limit block 3 is fixed at one end of the drill rod 1, and two groups of the first limit block 3 and the first limit groove 8 are provided, and the first limit block 3 and the first limit groove 8 are slidably connected, and the maximum sliding distance of the first limit block 3 does not exceed the length of the first limit groove 8 itself. A connecting block 4 is provided at one end of the drill rod 1, and a mounting hole 5 is provided on one side of the connecting block 4. A first extrusion groove 6 is provided at one end of the connecting block 4 close to the drill rod 1. The first extrusion groove 6 is cylindrical like the drill rod 1, and the diameter of the first extrusion groove 6 is the same as the diameter of the drill rod 1, and a first spring is provided between the first extrusion groove 6 and the drill rod 1. 7 constitutes a telescopic structure, a first spring 7 is installed between the first extrusion groove 6 and the drill rod 1, a first limiting groove 8 is provided on one side of the first extrusion groove 6 close to the first limiting block 3, a drill bit 22 is fixed to the other end of the drill rod 1, a fixing block 9 is fixed to one side of the drill bit 22, a connecting groove 10 is provided on one side of the fixing block 9, the connecting groove 10 and the closing plate 13 are both rectangular, and the size of the connecting groove 10 is consistent with the size of the closing plate 13, and the closing plate 13 and the second limiting groove 11 are slidably connected through the second limiting block 12, and the second limiting grooves 11 are provided on both sides of the connecting groove 10;

[0025] A second limiting block 12 is embedded in the second limiting groove 11, a closing plate 13 is fixed between the second limiting blocks 12, a pulling block 14 is fixed to one side of the closing plate 13, a clamping groove 15 is provided on one side of the closing plate 13, and four groups of the clamping groove 15, the second extrusion groove 16, the second spring 17 and the steel ball 18 are provided, and the arc shape of the clamping groove 15 is consistent with the arc shape of the steel ball 18, and the second extrusion groove 16 and the steel ball 18 are connected by the second spring 17. 7 constitutes a telescopic structure, a second extrusion groove 16 is provided on one side of the fixed block 9 near the engaging groove 15, a second spring 17 is installed inside the second extrusion groove 16, a steel ball 18 is fixed on one side of the second spring 17, a slide groove 19 is provided inside the fixed block 9 near the connecting groove 10, two groups of the slide groove 19 and the slide block 20 are provided, and the slide groove 19 and the slide block 20 are slidably connected, the slide block 20 is embedded in the slide groove 19, and the blade 21 is fixed on one side of the slide block 20.

[0026] Working principle: When using the special drill bit for anti-impact ground pressure, you first need to have a simple understanding of the special drill bit for anti-impact ground pressure. The blade 21 needs to be installed before use. Pulling the blade 21 can drive the slider 20 to dock with the slide groove 19. When the slider 20 docks with the slide groove 19, the blade 21 can be pushed to make the slider 20 and the slide groove 19 slide. When the slider 20 slides to one end of the slide groove 19, the pulling block 14 can be pushed to move the closing plate 13. When the closing plate 13 moves, it can drive the second limit block 12 to move. When the second limit block 12 moves, it can slide with the second limit groove 11. When the closing plate 13 moves, the steel ball 18 can be squeezed. When the steel ball 18 is squeezed, it will squeeze the second spring 17. When the steel ball 18 is squeezed into the inside of the second spring 17, the closing plate 13 will drive the card The engaging groove 15 moves to the position of the steel ball 18. When the engaging groove 15 moves to the position of the steel ball 18, the steel ball 18 can be reset by the elastic force of the second spring 17 itself. After the steel ball 18 is reset, the engaging groove 15 can be squeezed and fixed, so that the blade 21 can be positioned after installation. The blade 21 can be used after installation. The drill bit 22 will produce impact when working. When the drill bit 22 is impacted, it will squeeze the drill rod 1. When the drill rod 1 is squeezed, it will drive the first limit block 3 to move. When the first limit block 3 moves, it can slide with the first limit groove 8. When the drill rod 1 is squeezed, it can squeeze the first spring 7. When the first spring 7 is squeezed, it can reduce the impact force of the drill bit 22 by its own elastic force. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. A special drill bit for preventing rock impact, comprising a drill rod (1) and a blade (21), characterized in that: A spiral blade (2) is fixed on one side of the drill rod (1), wherein a first limiting block (3) is fixed on one end of the drill rod (1), a connecting block (4) is provided on one end of the drill rod (1), a mounting hole (5) is provided on one side of the connecting block (4), a first extrusion groove (6) is provided on one end of the connecting block (4) close to the drill rod (1), a first spring (7) is installed between the first extrusion groove (6) and the drill rod (1), a first limiting groove (8) is provided on one side of the first extrusion groove (6) close to the first limiting block (3), a drill bit (22) is fixed on the other end of the drill rod (1), a fixing block (9) is fixed on one side of the drill bit (22), a connecting groove (10) is provided on one side of the fixing block (9), and second springs (7) are provided on both sides of the connecting groove (10). Two limiting grooves (11); a second limiting block (12) is embedded in the second limiting groove (11), a closing plate (13) is fixed between the second limiting blocks (12), a pulling block (14) is fixed to one side of the closing plate (13), a clamping groove (15) is provided on one side of the closing plate (13), a second extrusion groove (16) is provided on one side of the fixing block (9) near the clamping groove (15), a second spring (17) is installed in the second extrusion groove (16), a steel ball (18) is fixed on one side of the second spring (17), a sliding groove (19) is provided in the fixing block (9) near the connecting groove (10), a sliding block (20) is embedded in the sliding groove (19), and the blade (21) is fixed to one side of the sliding block (20); The first limit block (3) and the first limit groove (8) are provided in two groups, and the first limit block (3) and the first limit groove (8) are slidably connected, and the maximum sliding distance of the first limit block (3) does not exceed the length of the first limit groove (8); The first extrusion groove (6) and the drill rod (1) are both cylindrical, and the diameter of the first extrusion groove (6) is the same as the diameter of the drill rod (1), and a telescopic structure is formed between the first extrusion groove (6) and the drill rod (1) via a first spring (7).

2. The special drill bit for preventing rock burst according to claim 1, characterized in that: The connecting groove (10) and the closing plate (13) are both rectangular in shape, the size of the connecting groove (10) matches the size of the closing plate (13), and the closing plate (13) and the second limiting groove (11) are slidably connected via the second limiting block (12).

3. The special drill bit for preventing rock burst according to claim 1, characterized in that: The engaging groove (15), the second extrusion groove (16), the second spring (17) and the steel ball (18) are provided in four groups, and the engaging groove (15) is in an arc shape, and the arc shape of the engaging groove (15) matches the arc shape of the steel ball (18), and a telescopic structure is formed between the second extrusion groove (16) and the steel ball (18) through the second spring (17).

4. The special drill bit for preventing rock burst according to claim 1, characterized in that: The slide grooves (19) and the sliders (20) are provided in two groups, and the slide grooves (19) and the sliders (20) are slidably connected.

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