Down-the-hole drill bit structure with detachable working end alloy teeth

Abstract

The utility model discloses a down-the-hole drill bit structure with detachable working end alloy teeth, which belongs to the field of down-the-hole drill bits and comprises a down-the-hole drill bit main body consisting of a root canal and alloy teeth, the root canal is positioned on the right side of the alloy teeth, a connecting cylinder is mounted on the right side surface of the alloy teeth, and one end of the connecting cylinder extends into the root canal; according to the down-the-hole drill bit structure with the detachable working end alloy teeth, the fixing plate, the fixing rod, the first spring and the operation plate are arranged, one end of each alloy tooth extends into the root canal under the action of the connecting cylinder, the fixing rod is slidably supported under the action of the fixing plate in the groove, and one end of the connecting cylinder is fixed under the action of the fixing groove and the fixing rod; by combining the action of an operation plate and a first spring, the operation plate can be conveniently moved at any time to move one end of a fixing rod out of a fixing groove, then the alloy teeth are detached and replaced, the whole down-the-hole drill bit body does not need to be replaced when the alloy teeth are abraded, resource waste is avoided, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the down -the -hole drill technical field, concretely relates to a detachable down -the -hole drill structure of work end alloy tooth. BACKGROUND

[0002] Down -the -hole drill is a kind of tool for rock drilling, usually matched with down -the -hole hammer, it is matched with the hammer and is used for drilling operation, is widely used in the mining of open -pit mine, quarry, hydroelectric engineering, water well drilling and the support of excavated side column and other fields.

[0003] Since down -the -hole drill is used for rock drilling for a long time, the alloy tooth of long time work is prone to wear, but the alloy tooth on the existing down -the -hole drill is fixed on the down -the -hole drill, cannot be individually disassembled and replaced, and then the entire down -the -hole drill needs to be replaced when the alloy tooth wears, and then resource waste is caused, and use is not convenient. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a detachable down -the -hole drill structure of work end alloy tooth to solve the problem that the alloy tooth of long time work is prone to wear due to the long time use of down -the -hole drill for rock drilling in the above background art, but the alloy tooth on the existing down -the -hole drill is fixed on the down -the -hole drill, cannot be individually disassembled and replaced, and then the entire down -the -hole drill needs to be replaced when the alloy tooth wears, and then resource waste is caused, and use is not convenient.

[0005] To achieve the above object, the utility model provides the following technical scheme: including the down -the -hole drill main body of the root canal and alloy tooth, the root canal is located at the right side of alloy tooth, the right side surface of alloy tooth is equipped with the connecting barrel, one end of connecting barrel extends into the root canal, the front and rear two side surfaces of root canal inner wall are all set with recess, recess is equipped with fixed plate, fixed plate is equipped with the fixed rod of slidingly penetrating installation, the opposite end of two fixed rods is all equipped with pull plate, the spring one of the fixed rod is equipped with two ends fixedly connected with pull plate and fixed plate, the front and rear two side surfaces of connecting barrel are all set with the fixed slot that is matched with the fixed rod, one end of fixed rod extends into fixed slot, the front and rear two side surfaces of root canal are set with the communicating groove, the communicating groove is connected with recess, the front and rear two side surfaces of root canal are all set with the T-shaped operating plate, the vertical part of operating plate is located in communicating groove and is fixedly connected with pull plate.

[0006] The above scheme is adopted, by setting a fixing plate, a fixing rod, a spring and an operating plate, and utilizing the function of the connecting tube, one end of the alloy tooth is extended into the root canal, and the fixing rod is slidably supported by the action of the fixing plate in the groove, and one end of the connecting tube is fixed by cooperating with the action of the fixing groove and the fixing rod. Combined with the action of the operating plate and the spring, it is convenient to move the operating plate at any time to move one end of the fixing rod out of the fixing groove and then disassemble and replace the alloy tooth. When the alloy tooth is worn, there is no need to replace the entire down-the-hole drill bit body, which will not cause waste of resources and is convenient to use.

[0007] As a preferred embodiment, two support plates are installed on the opposite sides of the two fixed plates, and the opposite sides of the two support plates on the same side are provided with sliding grooves, in which sliders are slidably installed, and one end of the slider is fixedly connected to the pull plate.

[0008] By adopting the above scheme, a support plate and a slider are provided, and the slide groove opened on the support plate is utilized, combined with the sliding action of one end of the slider in the slide groove, when the pull plate is driven to move by the operating plate, the pull plate is strengthened and supported by the slider, thereby improving the stability of the pull plate, so that the pull plate can drive the fixed rod to move stably, and the operation is convenient.

[0009] As a preferred embodiment, a fixing ring is installed in the root canal, four springs 2 are installed on the left side of the fixing ring, and one end of the four springs 2 is installed with the same annular push plate, and the side of the push plate is in contact with the connecting tube.

[0010] By adopting the above scheme, a fixing ring, a second spring and a push plate are set, the fixing ring is used to support the second spring, and the second spring is used to elastically support the push plate, so that after the connecting tube is released, the push plate is subjected to the reaction force of the second spring to push one end of the connecting tube out of the follower tube, thereby facilitating and quickly disassembling the alloy tooth.

[0011] As a preferred embodiment, a telescopic rod is provided in the spring 2, the telescopic rod is mounted on the fixing ring, and the telescopic shaft of the telescopic rod is fixedly connected to the pushing plate.

[0012] By adopting the above solution, a telescopic rod is set up and the extensibility of the telescopic rod is used to fill the interior of the spring 2, thereby improving the fullness of the interior of the spring 2, so that the spring 2 will not deviate to the side when squeezed or stretched by the push plate, thereby improving the stability of the spring 2 and extending the service life of the spring 2.

[0013] As a preferred embodiment, an annular baffle is installed on the connecting tube, four pins are installed on the right side of the baffle, and four slots are arranged to match the pins on the left side of the root canal, and one end of the pin extends into the slot.

[0014] By adopting the above scheme, a baffle and a pin are set up, and the baffle is used to determine the position of the connecting tube entering the root canal. Combined with the cooperation of the pin and the slot, the connecting tube and the root canal are initially fixed together, thereby facilitating the initial fixation of the alloy tooth on the root canal.

[0015] As a preferred embodiment, four arc-shaped limiting grooves are formed on the inner wall surface of the root canal, limiting plates are provided in the limiting grooves, and the limiting plates are fixedly connected to the connecting tube.

[0016] By adopting the above scheme, by setting a limit groove and a limit plate, and utilizing the sliding effect of one end of the limit plate in the limit groove, the position of the connecting tube entering the root canal is determined, thereby facilitating the rapid fixation of the connecting tube in the later stage, and then connecting the alloy tooth and the root canal together.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The down-the-hole drill bit structure with detachable alloy teeth at the working end is provided with a fixing plate, a fixing rod, a spring and an operating plate. By utilizing the function of the connecting tube, one end of the alloy tooth is extended into the root canal. The fixing plate in the groove is used to slide and support the fixing rod. The fixing groove and the fixing rod cooperate to fix one end of the connecting tube. Combined with the function of the operating plate and the spring, the operating plate can be moved at any time to remove one end of the fixing rod from the fixing groove, thereby detaching and replacing the alloy teeth. When the alloy teeth are worn, there is no need to replace the entire down-the-hole drill bit body, thereby avoiding waste of resources and being convenient to use.

[0019] The working end alloy tooth detachable down-the-hole drill bit structure is provided with a support plate and a slider, and utilizes the slide groove provided on the support plate, combined with the sliding action of one end of the slider in the slide groove, so that when the pull plate is driven to move by the operating plate, the pull plate is strengthened and supported by the slider, thereby improving the stability of the pull plate, so that the pull plate can drive the fixed rod to move stably, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the root canal of the present invention;

[0022] Figure 3 This is an enlarged structural diagram of point A of the present utility model;

[0023] Figure 4 This is a schematic diagram of the main structure of the root canal of the present invention.

[0024] In the figure: 1. Root canal; 2. Alloy tooth; 3. Fixed plate; 4. Spring 1; 5. Pull plate; 6. Operating plate; 7. Fixed rod; 8. Fixed ring; 9. Telescopic rod; 10. Spring 2; 11. Push plate; 12. Support plate; 13. Slider; 14. Baffle; 15. Latch; 16. Limit plate; 17. Connecting tube; 18. Limit groove; 19. Groove; 20. Slide groove. DETAILED DESCRIPTION

[0025] See also Figures 1-4 The present invention provides a down-the-hole drill bit structure with detachable alloy teeth at the working end, including a down-the-hole drill bit body consisting of a root canal 1 and an alloy tooth 2. The root canal 1 is located on the right side of the alloy tooth 2. A connecting tube 17 is installed on the right side of the alloy tooth 2. One end of the connecting tube 17 extends into the root canal 1. A groove 19 is provided on the front and rear side surfaces of the inner wall of the root canal 1. A fixing plate 3 is installed in the groove 19. A fixing rod 7 is slidably installed on the fixing plate 3. A pull plate 5 is installed on the opposite ends of the two fixing rods 7. A spring 4 is sleeved on the fixing rod 7 with two ends fixedly connected to the pull plate 5 and the fixing plate 3 respectively. A fixing groove matched with the fixing rod 7 is provided on the front and rear side surfaces of the connecting tube 17. One end of the fixing rod 7 extends into the fixing groove. A connecting groove is provided on the front and rear side surfaces of the root canal 1. The connecting groove is connected to the groove 19, and a T-shaped operating plate 6 is provided on the front and rear sides of the root canal 1. The vertical part of the operating plate 6 is located in the connecting groove and is fixedly connected to the pull plate 5. By setting the fixing plate 3, the fixing rod 7, the spring 4 and the operating plate 6, the action of the connecting tube 17 is utilized to extend one end of the alloy tooth 2 into the root canal 1. Through the action of the fixing plate 3 in the groove 19, the fixing rod 7 is slidably supported, and the action of the fixing groove and the fixing rod 7 is coordinated to fix one end of the connecting tube 17. Combined with the action of the operating plate 6 and the spring 4, it is convenient to move the operating plate 6 at any time to move one end of the fixing rod 7 out of the fixing groove and then disassemble and replace the alloy tooth 2. When the alloy tooth 2 is worn, there is no need to replace the entire down-the-hole drill bit body, which will not cause waste of resources and is convenient to use.

[0026] Two supporting plates 12 are installed on the opposite sides of the two fixed plates 3, and a sliding groove 20 is provided on the opposite sides of the two support plates 12 on the same side. A slider 13 is slidably installed in the sliding groove 20, and one end of the slider 13 is fixedly connected to the pull plate 5. By providing the support plate 12 and the slider 13, utilizing the sliding groove 20 provided on the support plate 12, combined with the sliding effect of one end of the slider 13 sliding in the sliding groove 20, when the pull plate 5 is driven by the operating plate 6 to move, the pull plate 5 is strengthened and supported by the action of the slider 13, thereby improving the stability of the pull plate 5, so that the pull plate 5 can drive the fixed rod 7 to move stably, and the operation is convenient.

[0027] A fixing ring 8 is installed in the root canal 1, and four springs 2 10 are installed on the left side of the fixing ring 8. One end of the four springs 2 10 is installed with the same annular push plate 11, and the side of the push plate 11 fits with the connecting tube 17. By setting the fixing ring 8, spring 2 10 and push plate 11, the fixing ring 8 is used to support the spring 2 10, and the push plate 11 is elastically supported by the spring 2 10, so that after the connecting tube 17 is released, the push plate 11 is subjected to the reaction force of the spring 2 10 to push one end of the connecting tube 17 out of the root canal, thereby facilitating and quickly disassembling the alloy tooth 2.

[0028] A telescopic rod 9 is provided in the spring 2 10, and the telescopic rod 9 is installed on the fixed ring 8. The telescopic axis of the telescopic rod 9 is fixedly connected to the push plate 11. By providing the telescopic rod 9, the extensibility of the telescopic rod 9 is utilized to fill the interior of the spring 2 10, thereby improving the fullness of the interior of the spring 2 10, so that the spring 2 10 will not deviate laterally when squeezed or stretched by the push plate 11, thereby improving the stability of the spring 2 10 and extending the service life of the spring 2 10.

[0029] An annular baffle 14 is installed on the connecting tube 17, and four pins 15 are installed on the right side of the baffle 14. Four slots are arranged to cooperate with the pins 15 on the left side of the root canal 1, and one end of the pin 15 extends into the slot. By setting the baffle 14 and the pin 15, the position of the connecting tube 17 entering the root canal 1 is determined by utilizing the effect of the baffle 14. Combined with the effect of the pin 15 cooperating with the slot, the connecting tube 17 and the root canal 1 are preliminarily fixed together, thereby facilitating the preliminarily fixing of the alloy tooth 2 on the root canal 1.

[0030] Four arc-shaped limit grooves 18 are provided on the inner wall surface of the root canal 1, and a limit plate 16 is provided in the limit groove 18. The limit plate 16 is fixedly connected to the connecting tube 17. By providing the limit groove 18 and the limit plate 16, and utilizing the effect of one end of the limit plate 16 sliding in the limit groove 18, the position of the connecting tube 17 entering into the root canal 1 is determined, thereby facilitating the quick fixation of the connecting tube 17 in the later stage, and then connecting the alloy tooth 2 to the root canal 1 together.

[0031] When in use, move the operating plate 6, the operating plate 6 drives the pulling plate 5 to move, and when the pulling plate 5 moves, it drives the fixing rod 7 to move, the pulling plate 5 stretches the spring 14, and the fixing rod 7 slides on the fixing plate 3, and then one end of the connecting tube 17 is placed on the left side of the root canal 1, and then move the connecting tube 17, the connecting tube 17 drives one end of the limiting plate 16 to extend into the limiting groove 18, the connecting tube 17 drives the baffle 14 to move, and the baffle 14 drives one end of the latch 15 to extend into the slot, and when the connecting tube 17 enters the root canal 1, it conflicts with the pushing plate 11, and as the connecting tube 17 gradually enters the root canal 1, the pushing plate 11 moves Move to the right, push plate 11 to squeeze spring 2 10 and telescopic rod 9, and then release the operating plate 6. The operating plate 6 moves into the groove 19 under the reaction force of spring 1 4, and the pull plate 5 drives the fixing rod 7 to move into the root canal 1. At this time, one end of the fixing rod 7 extends into the fixing groove, thereby completing the installation of the alloy tooth 2. When the alloy tooth 2 needs to be disassembled, move the operating plate 6 outward, and the operating plate 6 drives the pull plate 5 to move. The pull plate 5 drives one end of the fixing rod 7 to move out of the fixing groove. The connecting tube 17 is pushed out of the root canal 1 by the push plate 11, and then the alloy tooth 2 can be disassembled. The structure is simple.

Claims

1. A down-the-hole drill bit with detachable alloy teeth at the working end, characterized by: The invention comprises a down-the-hole drill bit body consisting of a root canal (1) and an alloy tooth (2), wherein the root canal (1) is located on the right side of the alloy tooth (2), a connecting tube (17) is installed on the right side of the alloy tooth (2), one end of the connecting tube (17) extends into the root canal (1), grooves (19) are provided on the front and rear sides of the inner wall of the root canal (1), a fixing plate (3) is installed in the groove (19), a fixing rod (7) is installed on the fixing plate (3) and a pull plate (5) is installed on the opposite ends of the two fixing rods (7). A spring (4) is sleeved on the rod (7), with both ends fixedly connected to the pull plate (5) and the fixed plate (3) respectively. The front and rear side surfaces of the connecting tube (17) are provided with fixing grooves arranged in coordination with the fixed rod (7). One end of the fixed rod (7) extends into the fixing groove. The front and rear side surfaces of the root canal (1) are provided with connecting grooves, which are connected to the groove (19). The front and rear side surfaces of the root canal (1) are provided with T-shaped operating plates (6). The vertical part of the operating plate (6) is located in the connecting groove and is fixedly connected to the pull plate (5).

2. The down-the-hole drill bit structure with detachable alloy teeth at the working end according to claim 1, characterized in that: Two supporting plates (12) are installed on the opposite sides of the two fixing plates (3), and a sliding groove (20) is provided on the opposite sides of the two supporting plates (12) on the same side. A slider (13) is slidably installed in the sliding groove (20), and one end of the slider (13) is fixedly connected to the pulling plate (5).

3. The down-the-hole drill bit structure with detachable alloy teeth at the working end according to claim 1, characterized in that: A fixing ring (8) is installed in the root canal (1), and four springs (10) are installed on the left side of the fixing ring (8). One end of the four springs (10) is installed with a same annular push plate (11), and the side surface of the push plate (11) is in contact with the connecting tube (17).

4. The down-the-hole drill bit structure with detachable alloy teeth at the working end according to claim 3 is characterized in that: A telescopic rod (9) is provided in the second spring (10), and the telescopic rod (9) is mounted on the fixing ring (8). The telescopic shaft of the telescopic rod (9) is fixedly connected to the pushing plate (11).

5. The down-the-hole drill bit structure with detachable alloy teeth at the working end according to claim 1, characterized in that: An annular baffle (14) is installed on the connecting tube (17), and four latches (15) are installed on the right side of the baffle (14). Four slots arranged to match the latches (15) are opened on the left side of the root canal (1), and one end of the latch (15) extends into the slot.

6. The down-the-hole drill bit structure with detachable alloy teeth at the working end according to claim 1, characterized in that: Four arc-shaped limiting grooves (18) are provided on the inner wall surface of the root canal (1), and limiting plates (16) are arranged in the limiting grooves (18). The limiting plates (16) are fixedly connected to the connecting tube (17).

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