阅读说明：本技术 防冲击地压专用钻头 (Special drill bit for preventing rock burst ) 是由 张显荣 高超 张傲 张松林 李亮 朱文峰 于 2020-07-04 设计创作，主要内容包括：本发明公开了防冲击地压专用钻头,包括钻杆和刀片,所述钻杆一侧固定有螺旋刀片,其中,所述钻杆一端固定有第一限位块,所述钻杆一端设置有连接块,所述连接块一侧开设有安装孔,靠近钻杆的所述连接块一端开设有第一挤压槽,所述第一挤压槽与钻杆之间安装有第一弹簧,靠近第一限位块的所述第一挤压槽一侧开设有第一限位槽。该防冲击地压专用钻头设置有钻头工作时会产生冲击,钻头受到冲击时会对钻杆进行挤压,钻杆受到挤压时会带动第一限位块进行移动,第一限位块移动时可以与第一限位槽进行滑动,钻杆受到挤压的同时可以对第一弹簧进行挤压,第一弹簧受到挤压可以通过自身弹力将钻头的冲击力进行减缓,方便钻头在使用时可以进行防冲击。(The invention discloses a special drill bit for preventing rock burst, which comprises a drill rod and a blade, wherein a spiral blade is fixed on one side of the drill rod, a first limiting block is fixed at one end of the drill rod, a connecting block is arranged at one end of the drill rod, an installation hole is formed in one side of the connecting block, a first extrusion groove is formed in one end, close to the drill rod, of the connecting block, a first spring is arranged between the first extrusion groove and the drill rod, and a first limiting groove is formed in one side, close to the first limiting block, of the first extrusion groove. This special drill bit of protecting against shock ground pressure is provided with the drill bit during operation and can produces the impact, the drill bit can extrude the drilling rod when receiving the impact, the drilling rod can drive first stopper when receiving the extrusion and remove, can slide with first spacing groove when first stopper removes, can extrude first spring when the drilling rod receives the extrusion, first spring receives the extrusion and can slow down the impact force of drill bit through self elasticity, make things convenient for the drill bit to carry out the protecting against shock when using.)

1. Rock burst resistant special drill bit, including drilling rod (1) and blade (21), its 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 at one end of the drill rod (1), a connecting block (4) is arranged at one end of the drill rod (1), a mounting hole (5) is formed in one side of the connecting block (4), a first extrusion groove (6) is formed in one end of the connecting block (4) close to the drill rod (1), a first spring (7) is arranged between the first extrusion groove (6) and the drill rod (1), a first limiting groove (8) is formed in one side of the first extrusion groove (6) close to the first limiting block (3), a drill bit (22) is fixed at the other end of the drill rod (1), a fixing block (9) is fixed at one side of the drill bit (22), a connecting groove (10) is formed in one side of the fixing block (9), and second limiting grooves (11) are formed in two sides of the;

inside gomphosis of second spacing groove (11) has second stopper (12), be fixed with between second stopper (12) closure plate (13), closure plate (13) one side is fixed with pulling piece (14), block groove (15) have been seted up to closure plate (13) one side, be close to block groove (15) second extrusion groove (16) have been seted up to fixed block (9) one side, second extrusion groove (16) internally mounted has second spring (17), second spring (17) one side is fixed with steel ball (18), is close to spread groove (10) inside spout (19) have been seted up to fixed block (9), the inside gomphosis of spout (19) has slider (20), blade (21) are fixed in slider (20) one side.

2. The drill bit special for protecting against rock burst according to claim 1, characterized in that: the first limiting blocks (3) and the first limiting grooves (8) are arranged in two groups, the first limiting blocks (3) are in sliding connection with the first limiting grooves (8), and the maximum sliding distance of the first limiting blocks (3) does not exceed the length of the first limiting grooves (8).

3. The drill bit special for protecting against rock burst according to claim 1, characterized in that: the first extrusion groove (6) and the drill rod (1) are cylindrical, the diameter of the first extrusion groove (6) is the same as that of the drill rod (1), and a telescopic structure is formed between the first extrusion groove (6) and the drill rod (1) through a first spring (7).

4. The drill bit special for protecting against rock burst according to claim 1, characterized in that: the connecting groove (10) and the closing plate (13) are rectangular, the size of the connecting groove (10) is matched with that of the closing plate (13), and the closing plate (13) is in sliding connection with the second limiting groove (11) through a second limiting block (12).

5. The drill bit special for protecting against rock burst according to claim 1, characterized in that: four groups of clamping grooves (15), four groups of second extrusion grooves (16), four groups of second springs (17) and four groups of steel balls (18) are arranged, the clamping grooves (15) are arc-shaped, the arc of the clamping grooves (15) is matched with the arc of the steel balls (18), and the second extrusion grooves (16) and the steel balls (18) form a telescopic structure through the second springs (17).

6. The drill bit special for protecting against rock burst according to claim 1, characterized in that: the sliding grooves (19) and the sliding blocks (20) are arranged in two groups, and the sliding grooves (19) and the sliding blocks (20) are in sliding connection.

Technical Field

The invention relates to the technical field of soil exploration equipment, in particular to a drill bit special for preventing rock burst.

Background

The earth pressure special drill bit is also called a spiral drill bit, the cutting tool used by the soil layer spiral drill bit is a shovel-shaped wear-resistant alloy bucket tooth with cutting teeth, and the earth pressure special drill bit is mainly used for non-circulating drilling in soil layers above the underground water level, sandy soil layers, compact sand layers containing a small amount of clay and sandstone layers with small particle sizes. The structure is a straight spiral, and comprises a bullet single screw, a double-head single screw and a double-head double screw. The single-screw drill bit is suitable for drilling an ovoid sandstone layer and a clay layer with good cementation property due to easy slag removal and small rotation resistance, and the double-screw drill bit is strong in soil carrying capacity and good in correcting performance and is suitable for drilling a loose stratum and a soft-hard interbedded stratum.

The special rock pressure drill bit on the market at present has many defects, does not have the anti-impact function, and the blade is inconvenient to be installed, and the slider is inconvenient to be positioned, so the technology that can improve the special rock pressure drill bit structure of anti-impact is urgently needed on the market to perfect the equipment.

Disclosure of Invention

The invention aims to provide a special drill for preventing rock burst, which aims to solve the problems that the special drill for preventing rock burst in the market at present has many defects, does not have the function of preventing rock burst, is inconvenient to install blades and is inconvenient to position the blades.

In order to achieve the purpose, the invention provides the following technical scheme: the rock burst preventing special drill bit comprises a drill rod and a blade, wherein a spiral blade is fixed on one side of the drill rod, wherein,

a first limiting block is fixed at one end of the drill rod, a connecting block is arranged at one end of the drill rod, an installation hole is formed in one side of the connecting block, a first extrusion groove is formed in 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 formed in one side of the first extrusion groove close to the first limiting block, a drill bit is fixed at the other end of the drill rod, a fixed block is fixed on one side of the drill bit, a connecting groove is formed in one side of the fixed block, and second limiting grooves are formed in two sides;

the second limiting groove is embedded with a second limiting block, a sealing plate is fixed between the second limiting blocks, a pulling block is fixed on one side of the sealing plate, a clamping groove is formed in one side of the sealing plate, a second extrusion groove is formed in one side of the fixing block and is 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 formed in the fixing block and is close to the connecting groove, a sliding block is embedded in the sliding groove, and the blade is fixed on one side of the sliding block.

Preferably, the first limiting block and the first limiting groove are provided with two groups, the first limiting block and the first limiting groove are in sliding connection, and the maximum sliding distance of the first limiting block does not exceed the length of the first limiting groove.

Preferably, the first extrusion groove and the drill rod are cylindrical, 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.

Preferably, the connecting groove and the closing plate are rectangular, the size of the connecting groove is matched with that of the closing plate, and the closing plate and the second limiting groove are in sliding connection through the second limiting block.

Preferably, four groups of the clamping groove, the second extrusion groove, the second spring and the steel ball are arranged, the clamping groove is arc-shaped, the arc of the clamping groove is matched with the arc of the steel ball, and the second extrusion groove and the steel ball form a telescopic structure through the second spring.

Preferably, the sliding grooves and the sliding blocks are arranged in two groups, and the sliding grooves are in sliding connection with the sliding blocks.

Compared with the prior art, the invention has the beneficial effects that: this protecting against rock burst special drill bit:

1. the drill bit can generate impact when working, the drill bit can extrude the drill rod when being impacted, the drill rod can drive the first limiting block to move when being extruded, the first limiting block can slide with the first limiting groove when moving, the drill rod can extrude the first spring when being extruded, the impact force of the drill bit can be reduced through the self elasticity when the first spring is extruded, and the drill bit can be conveniently prevented from being impacted when being used;

2. the sliding block can be butted with the sliding groove by pulling the blade, so that the blade can be pushed to enable the sliding block and the sliding groove to slide when the sliding block is butted with the sliding groove, and the pulling block can be pushed to enable the sealing plate to close the connecting groove after the sliding block slides to one end of the sliding groove, so that the blade can be conveniently and quickly installed;

3. be provided with the closing plate and can remove through promoting the pulling block, so that the closing plate can drive the second stopper when removing and remove, can slide with the second spacing groove when the second spacing block removes, can extrude the steel ball when the closing plate removes, the steel ball receives and can extrude the second spring when extrudeing, the closing plate can drive the position that the block groove removed the steel ball when the steel ball extrudeed the second spring is inside, the steel ball can reset through second spring self elasticity after the position that the block groove removed the steel ball, can extrude fixedly to the block groove after the steel ball resets, can fix a position after making things convenient for the blade installation.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is an enlarged view of part A of the present invention;

FIG. 4 is an enlarged view of the part B of the present invention.

In the figure: 1. a drill stem; 2. a helical blade; 3. a first stopper; 4. connecting blocks; 5. mounting holes; 6. a first extrusion groove; 7. a first spring; 8. a first limit groove; 9. a fixed block; 10. connecting grooves; 11. a second limit groove; 12. a second limiting block; 13. a closing plate; 14. pulling the block; 15. a clamping groove; 16. a second extrusion groove; 17. a second spring; 18. steel balls; 19. a chute; 20. a slider; 21. a blade; 22. a drill bit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the drill bit special for preventing impact ground pressure comprises a drill rod 1, a spiral blade 2, a first limiting block 3, a connecting block 4, a mounting hole 5, a first extrusion groove 6, a first spring 7, a first limiting groove 8, a fixing block 9, a connecting groove 10, a second limiting groove 11, a second limiting block 12, a sealing plate 13, a pulling block 14, a clamping groove 15, a second extrusion groove 16, a second spring 17, a steel ball 18, a sliding groove 19, a sliding block 20, a blade 21 and a drill bit 22, wherein the spiral blade 2 is fixed on one side of the drill rod 1,

a first limiting block 3 is fixed at one end of the drill rod 1, two groups of first limiting blocks 3 and first limiting grooves 8 are arranged, the first limiting blocks 3 are connected with the first limiting grooves 8 in a sliding mode, the maximum sliding distance of the first limiting blocks 3 does not exceed the length of the first limiting grooves 8, a connecting block 4 is arranged at one end of the drill rod 1, a mounting hole 5 is formed in one side of the connecting block 4, a first extrusion groove 6 is formed in one end, close to the drill rod 1, of the connecting block 4, the first extrusion groove 6 and the drill rod 1 are cylindrical, the diameter of the first extrusion groove 6 is the same as that of the drill rod 1, a telescopic structure is formed between the first extrusion groove 6 and the drill rod 1 through a first spring 7, a first spring 7 is installed between the first extrusion groove 6 and the drill rod 1, and one side, close to the first limiting blocks 3, of the first extrusion groove 6 is provided with the first limiting grooves 8, a drill bit 22 is fixed at the other end of the drill rod 1, a fixed block 9 is fixed at one side of the drill bit 22, a connecting groove 10 is formed in one side of the fixed block 9, the connecting groove 10 and the closing plate 13 are rectangular, the size of the connecting groove 10 is matched with that of the closing plate 13, the closing plate 13 and the second limiting groove 11 form sliding connection through a second limiting block 12, and second limiting grooves 11 are formed in two sides of the connecting groove 10;

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 on one side of the closing plate 13, a clamping groove 15 is formed on one side of the closing plate 13, four groups of clamping grooves 15, second extrusion grooves 16, second springs 17 and steel balls 18 are arranged on one side of the closing plate 12, the clamping grooves 15 are arc-shaped, the arc of the clamping grooves 15 is matched with the arc of the steel balls 18, a telescopic structure is formed between the second extrusion grooves 16 and the steel balls 18 through second springs 17, a second extrusion groove 16 is formed on one side of the fixing block 9 close to the clamping groove 15, the second springs 17 are arranged in the second extrusion grooves 16, the steel balls 18 are fixed on one side of the second springs 17, a sliding groove 19 is formed in the fixing block 9 close to the connecting groove 10, the sliding grooves 19 and the sliding blocks 20 are arranged in two groups, and the sliding grooves 19 and the sliding blocks 20 are in sliding, a slider 20 is fitted into the slide groove 19, and the blade 21 is fixed to one side of the slider 20.

The working principle is as follows: when the drill bit special for preventing the rock burst is used, firstly, the drill bit special for preventing the rock burst needs to be simply known, before the drill bit is used, the blade 21 needs to be installed, the blade 21 can be pulled to drive the sliding block 20 to be in butt joint with the sliding groove 19, the blade 21 can be pushed to enable the sliding block 20 to slide with the sliding groove 19 when the sliding block 20 is in butt joint with the sliding groove 19, the sliding block 14 can be pushed to enable the sealing plate 13 to move when the sliding block 20 slides to one end of the sliding groove 19, the second limiting block 12 can be driven to move when the sealing plate 13 moves, the second limiting block 12 can slide with the second limiting groove 11 when the second limiting block 12 moves, the steel ball 18 can be extruded when the steel ball 18 is extruded, the second spring 17 can be extruded when the steel ball 18 is extruded to the inside of the second spring 17, the sealing plate 13 can drive the clamping groove 15 to move to the position of the steel ball 18 when the clamping groove 15 moves to the position of the steel ball 18 Position, steel ball 18 can extrude fixedly to snap-fit groove 15 after reseing, can fix a position after making blade 21 install, blade 21 can use after the installation is accomplished, drill bit 22 during operation can produce the impact, drill bit 22 can extrude drilling rod 1 when receiving the impact, drilling rod 1 can drive first stopper 3 when receiving the extrusion and remove, can slide with first spacing groove 8 when first stopper 3 removes, drilling rod 1 can extrude first spring 7 when receiving the extrusion, first spring 7 can slow down drill bit 22's impact force through self elasticity when receiving the extrusion, the content of not doing detailed description in this description belongs to the known prior art of technical professional in this field.

In summary, the embodiments of the present invention are merely exemplary and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made according to the content of the claims of the present invention should fall within the technical scope of the present invention.