Rotary drilling machine drill bit convenient to replace

Abstract

The utility model relates to the technical field of drill bit replacement, and discloses a rotary drilling machine drill bit convenient to replace, which comprises a drilling machine head, a connecting rod and a barb steel plate assembly, the top end of the drilling machine head is fixedly connected with a square head hinge rod, the bottom end of the connecting rod is fixedly connected with a bolt column, and three limiting rods are fixedly connected in the middle of the interior of the bolt column. Sliding blocks are slidably connected to the upper sides and the lower sides of the exteriors of the three limiting rods, telescopic air rods are fixedly connected to the sides, close to each other, of the two sliding blocks, four rotating rods are rotatably connected to the middles of the exteriors of the sliding blocks, connecting rods are rotatably connected to the middles of the rotating rods, and abutting blocks are rotatably connected to the ends, away from the limiting rods, of the rotating rods. According to the drill bit replacement device, drill bits of different sizes and specifications can be rapidly replaced, operation is easy, high connection strength and stability can be provided, drill bit function replacement is achieved, the shutdown time of a production line can be shortened, and work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bit replacement, in particular to a rotary drilling rig drill bit which is convenient to replace. Background Technique

[0002] The rotary drilling rig is a construction technology suitable for hole forming operations in building foundation projects. It is widely used in foundation construction projects such as municipal construction, highway bridges, and high-rise buildings. With different drill tools, it is suitable for dry (short helix), or wet (rotary bucket) and rock layer (core drill) hole forming operations. Common rotary drilling rig drill bits include spiral drill bits, rotary buckets, barrel core drill bits, under-reaming drill bits, impact drill bits, grab drill bits, and hydraulic grabs.

[0003] In the prior art, when connecting the drill bit of the rotary drilling rig, multiple pin rods are used to penetrate the connection part to fix the drill bit. In the fixing process, workers need to hammer the pin rods into the connection holes, which is quite laborious. The working environment of the drill bit is relatively harsh, and the pin rods often get stuck in the connection holes. This situation is quite difficult to handle. Therefore, in view of the above problems, a rotary drilling rig drill bit which is convenient to replace is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a rotary drilling rig drill bit which is convenient to replace, aiming to improve the problem of difficult drill bit replacement in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A rotary drilling rig drill bit which is convenient to replace, comprising a drill rig head, a connecting rod, and a barbed steel plate assembly. The top end of the drill rig head is fixedly connected with a square head hinge rod. The bottom end of the connecting rod is fixedly connected with a pin column. Three limiting rods are fixedly connected to the middle inside the pin column. Sliding blocks are slidably connected to the upper and lower sides of the outside of the three limiting rods. A telescopic air rod is fixedly connected to the adjacent sides of the two sliding blocks. Four rotating rods are rotatably connected to the middle outside of the sliding blocks. A connecting rod is rotatably connected to the middle of the rotating rod. A resisting block is rotatably connected to the end of the rotating rod away from the limiting rod. Four through holes are opened on the outside of the pin column. Card slots are opened on both the left and right sides of the drill rig head. Grooves are opened on both the left and right sides at the bottom end of the drill rig head. A square block is fixedly connected to the rear side of the groove. A rotating assembly is arranged outside the square block, and the rotating assembly is used to engage the position of the barbed steel plate assembly;

[0007] As a further description of the above technical solution:

[0008] The rotating assembly includes two limiting blocks, a rotating cylinder, an arc groove, a handle, a connecting shaft, a clamping member and a connecting block. At both the front and rear ends of the side of the square block away from the drill head, limiting blocks are fixedly connected. A rotating cylinder is provided in the middle of the square block. An arc groove is rotatably connected in the middle of the rotating cylinder. A handle is provided in the middle of the arc groove. A connecting shaft is fixedly connected in the middle of the two limiting blocks. A clamping member is rotatably connected to the outer part of the connecting shaft. A connecting block is fixedly connected to the side of the clamping member close to the drill head;

[0009] As a further description of the above technical solution:

[0010] The outer part of the pin column is engaged with the inner wall of the square head hinge rod, and the abutting block is sleeved on the outer part of the rotating rod;

[0011] As a further description of the above technical solution:

[0012] The outer part of the abutting block is slidably connected to the inner wall of the through hole, and the side of the abutting block away from the limiting rod is in contact with the inner wall of the square head hinge rod;

[0013] As a further description of the above technical solution:

[0014] The front and rear sides of the clamping member are slidably connected to the adjacent sides of the two limiting blocks, and the outer part of the clamping member is engaged with the outer part of the arc groove;

[0015] As a further description of the above technical solution:

[0016] Two notches are provided on the outer part of the clamping member;

[0017] As a further description of the above technical solution:

[0018] The bottom end of the connecting block is in contact with the top end of the square block, and the rear side of the connecting block is slidably connected to the rear side of the inner wall of the groove;

[0019] As a further description of the above technical solution:

[0020] The outer part of the barbed steel plate assembly is engaged with the inner wall of the card slot, and the rear side of the rear limiting block is in contact with the rear side of the inner wall of the groove.

[0021] The present utility model has the following beneficial effects:

[0022] 1. In the present utility model, by controlling the telescopic air rod in the pin column to start and push the sliders to slide towards each other, the rotating rods connected to the sliders are driven to cross-rotate, driving the abutting block to slide out of the through hole and abut against the inner wall of the square head hinge rod, realizing the rapid replacement of drill bits of different sizes and specifications. Moreover, the operation is simple, which can provide high connection strength and stability, ensuring that the drill bit will not loosen or shift during the working process.

[0023] 2. In the present utility model, by driving the rotating cylinder to rotate through the hand-held grip, the clamping member can rotate around the connecting shaft, thereby driving the barbed steel plate assembly fixed at the top of the connecting block to rotate downward, realizing the replacement of the drill bit function, which helps to reduce the downtime of the production line, thereby improving the project progress and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of a rotary drilling rig bit that is easy to replace proposed by the present utility model;

[0025] Figure 2 A structural schematic diagram of a pin column of a rotary drilling rig bit that is easy to replace proposed by the present utility model;

[0026] Figure 3 A structural schematic diagram of a abutment block of a rotary drilling rig bit that is easy to replace proposed by the present utility model;

[0027] Figure 4 A structural schematic diagram of a rotating rod of a rotary drilling rig bit that is easy to replace proposed by the present utility model;

[0028] Figure 5 A structural schematic diagram of a clamping member of a rotary drilling rig bit that is easy to replace proposed by the present utility model;

[0029] Figure 6 A structural schematic diagram of a limit block of a rotary drilling rig bit that is easy to replace proposed by the present utility model.

[0030] LEGEND DESCRIPTION:

[0031] 1. Drill head; 2. Square head articulated rod; 3. Connecting rod; 4. Pin column; 5. Limit rod; 6. Slide block; 7. Telescopic air rod; 8. Rotating rod; 9. Connecting rod; 10. Abutment block; 11. Through hole; 12. Card slot; 13. Groove; 14. Square block; 15. Limit block; 16. Rotating cylinder; 17. Arc groove; 18. Grip; 19. Connecting shaft; 20. Clamping member; 21. Connecting block; 22. Barbed steel plate assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] Refer to Figures 1 - 3, An embodiment provided by the present utility model: A rotary drilling rig bit that is convenient for replacement, including a drilling rig head 1, a connecting rod 3, and a barbed steel plate assembly 22. The top end of the drilling rig head 1 is fixedly connected with a square-headed articulated rod 2. The square-headed articulated rod 2 is connected to the drilling rig head 1 for the convenience of replacing the drilling rig head 1. The bottom end of the connecting rod 3 is fixedly connected with a pin column 4. The outside of the pin column 4 is engaged with the inner wall of the square-headed articulated rod 2. The design of the pin column 4 is for the operator to insert the pin column 4 into the square-headed articulated rod 2 to preliminarily fix the drilling rig head 1.

[0034] In the middle of the inside of the pin column 4, three limiting rods 5 are fixedly connected. The limiting rods 5 are evenly fixed in the middle of the inner wall of the pin column 4. On the upper and lower sides of the outside of the three limiting rods 5, sliding blocks 6 are slidably connected. The sliding blocks 6 are provided with three holes, so the sliding blocks 6 can slide on the limiting rods 5. On the adjacent sides of the two sliding blocks 6, a telescopic air rod 7 is fixedly connected. The driving end of the top of the telescopic air rod 7 is fixedly connected to the bottom end of the top sliding block 6. The hydraulic motor part of the telescopic air rod 7 is fixedly connected to the top end of the bottom sliding block 6. When the telescopic air rod 7 is started, the telescopic air rod 7 itself expands and contracts to pull or push the sliding blocks 6 to move synchronously. And the telescopic air rod 7 is in the middle position of the three limiting rods 5 and is surrounded by the three limiting rods 5, so its movement will not be interfered by the limiting rods 5.

[0035] Reference Figure 3 , Figure 4 , Four rotating rods 8 are rotatably connected to the middle of the outside of the sliding block 6. The rotating rods 8 are rotatably connected to the middle positions of the front, back, left, and right of the sliding block 6. The middle part of the rotating rod 8 is rotatably connected to a connecting rod 9. The connecting rod 9 connects two crossed rotating rods 8 to make the rotating rods 8 rotate around the connecting rod 9. The end of the rotating rod 8 far from the limiting rod 5 is rotatably connected to a resisting block 10. The end of the rotating rod 8 far from the limiting rod 5 is rotatably connected to the upper and lower ends of the inner wall of the resisting block 10. Four through holes 11 are provided on the outside of the pin column 4. The outside of the resisting block 10 is slidably connected to the inner wall of the through hole 11. The size of the through hole 11 is closely fitted to the outside of the resisting block 10, restricting the sliding distance of the resisting block 10 and effectively preventing the entry of dust.

[0036] The resisting block 10 is sleeved on the outside of the rotating rod 8. This design is to increase the sliding distance that the resisting block 10 can move and protect the rotating rod 8 to prevent dust and rain from entering the pin column 4 and damaging the internal components. The side of the resisting block 10 far from the limiting rod 5 is in contact with the inner wall of the square-headed articulated rod 2. The resisting block 10 extends out of the through hole 11 of the pin column 4 and abuts against the inner wall of the square-headed articulated rod 2, thereby engaging with the square-headed articulated rod 2. And since the distance that the rotating rod 8 crosses and folds to push the resisting block 10 to slide out of the through hole 11 is adjustable, different specifications and sizes of the square-headed articulated rods 2 fixed on the drilling rig head 1 can be realized, and indirectly, the drilling rig heads 1 of different sizes can be quickly replaced.

[0037] Reference Figure 5 , Figure 6, slots 12 are provided on both the left and right sides of the drill head 1, and the outer part of the barbed steel plate assembly 22 is engaged with the inner wall of the slot 12. The slot 12 is for placing and clamping and fixing the barbed steel plate assembly 22. Grooves 13 are provided on both the left and right sides at the bottom end of the drill head 1. A square block 14 is fixedly connected to the rear side of the groove 13. A rotating assembly is arranged outside the square block 14. The groove 13 is for giving a moving position to the square block 14 and the rotating assembly, and the rotating assembly is for clamping the position of the barbed steel plate assembly 22.

[0038] The rotating assembly includes two limiting blocks 15, a rotating cylinder 16, an arc groove 17, a handle 18, a connecting shaft 19, a clamping member 20 and a connecting block 21. Limiting blocks 15 are fixedly connected to both the front and rear ends of the side of the square block 14 away from the drill head 1. The limiting blocks 15 are fixed at the top corner positions of the square block 14. A rotating cylinder 16 is provided in the middle of the square block 14. An arc groove 17 is rotatably connected to the middle of the rotating cylinder 16. The rotating cylinder 16 is closely attached to the outside of the arc groove 17. A handle 18 is provided in the middle of the arc groove 17. A connecting shaft 19 is fixedly connected to the middle of the two limiting blocks 15. A clamping member 20 is rotatably connected to the outside of the connecting shaft 19. Two notches are provided on the outside of the clamping member 20. The handle 18 provided in the middle of the arc groove 17 has the same thickness as the clamping member 20, and the upper and lower two notches of the clamping member 20 are oppositely provided.

[0039] A connecting block 21 is fixedly connected to the side of the clamping member 20 close to the drill head 1. The front and rear sides of the clamping member 20 are slidably connected to the adjacent sides of the two limiting blocks 15. When the connecting block 21 rotates, it will drive the clamping member 20 to rotate around the connecting shaft 19 and fit the limiting blocks 15 to maintain the stability when the barbed steel plate assembly 22 fixed by the connecting block 21 rotates. The outside of the clamping member 20 is engaged with the outside of the arc groove 17. The bottom end of the connecting block 21 is in contact with the top end of the square block 14. The rear side of the connecting block 21 is slidably connected to the rear side of the inner wall of the groove 13. The rear side of the rear limiting block 15 is in contact with the rear side of the inner wall of the groove 13 for the stable rotation of the connecting block 21.

[0040] Working principle: When the drill head 1 needs to be replaced, the operator can drive the pin column 4 of the rotary excavator's connecting rod 3 to insert into the inner wall of the square head hinge rod 2 of the drill head 1, and then start the telescopic air rod 7. Let the two ends of the telescopic air rod 7 drive the slider 6 to slide on the limiting rod 5, so that the cross rods 8 connected to the slider 6 fold inward and push the abutting block 10 to slide and tightly abut against the inner wall of the through hole 11 and the inner wall of the square head hinge rod 2, so that the connecting rod 3 and the drill head 1 are quickly connected and different drill heads 1 can be replaced by the engagement of the inner wall of the square head hinge rod 2 with the pin column 4 and the abutting block 10. In this design, since the distance that the cross rods 8 fold and push the abutting block 10 to slide out of the through hole 11 is adjustable, different specifications and sizes of drill heads 1 can be replaced.

[0041] When it is necessary to use the barb steel plate assembly 22 to realize the salvage function, the cylinder fixed on the front side of the arc groove 17 can be held by hand, and the arc groove 17 can be rotated so that the outer edge of the handle 18 set on the arc groove 17 is flush with the outer edge of the block 14, so that the protruding outer part of the connecting shaft 19 can be rotated to contact the inner wall of the handle 18. At this time, the barb steel plate assembly 22 is bent and rotated downward, so that the barb steel plate assembly 22 drives the clamping part 20 downward with the connecting shaft 19 as the center, and finally the arc groove 17 is rotated so that the rounded position of the arc groove 17 is engaged with the notch of the clamping part 20, so that the position of the barb steel plate assembly 22 is fixed, and the function of the drill head 1 is replaced, which helps to reduce the downtime of the production line, thereby improving project progress and work efficiency.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary drilling rig bit that is easy to replace, comprising a drilling rig head (1), a connecting rod (3), and a barbed steel plate assembly (22), characterized in that: The top end of the drilling rig head (1) is fixedly connected to a square-headed hinged rod (2), the bottom end of the connecting rod (3) is fixedly connected to a latch column (4), the inner middle of the latch column (4) is fixedly connected to three limit rods (5), the upper and lower sides of the outer sides of the three limit rods (5) are slidably connected to sliders (6), the adjacent sides of two sliders (6) are fixedly connected to telescopic gas rods (7), the outer middle of the slider (6) is rotatably connected to four rotating rods (8), and the middle of the rotating rod (8) is rotatably connected to a connecting rod (9) ), the end of the rotating rod (8) away from the limiting rod (5) is rotatably connected to the stop block (10), the outside of the latch column (4) is provided with four through holes (11), the left and right sides of the drill head (1) are provided with card slots (12), the left and right sides of the bottom end of the drill head (1) are provided with grooves (13), the rear side of the groove (13) is fixedly connected to the block (14), and the outside of the block (14) is provided with a rotating component, and the rotating component is used to position the hook steel plate component (22).

2. The rotary drilling bit according to claim 1, characterized in that: The rotating assembly comprises two limit blocks (15), a rotating cylinder (16), an arc groove (17), a handle (18), a connecting shaft (19), a clamping piece (20) and a connecting block (21). The front and rear ends of the block (14) away from the drill head (1) are fixedly connected to the limit blocks (15). The middle of the block (14) is provided with a rotating cylinder (16). The middle of the rotating cylinder (16) is rotatably connected to the arc groove (17). The middle of the arc groove (17) is provided with a handle (18). The middle of the two limit blocks (15) is fixedly connected to the connecting shaft (19). The outside of the connecting shaft (19) is rotatably connected to the clamping piece (20). The side of the clamping piece (20) close to the drill head (1) is fixedly connected to the connecting block (21).

3. The easily replaceable rotary drilling rig drill bit according to claim 1, characterized in that: The outside of the latch column (4) is engaged with the inner wall of the square-head hinged rod (2), and the stop block (10) is sleeved on the outside of the rotating rod (8).

4. The easily replaceable rotary drilling rig drill bit according to claim 1, characterized in that: The outside of the stop block (10) is slidably connected to the inner wall of the through hole (11), and the side of the stop block (10) away from the limiting rod (5) is in contact with the inner wall of the square-head hinge rod (2).

5. The auger bit for a rotary drilling rig according to claim 2, characterized in that: The front and rear sides of the clamping member (20) are slidably connected to adjacent sides of the two limit blocks (15), and the exterior of the clamping member (20) is engaged with the exterior of the arc groove (17).

6. The auger bit for a rotary drilling rig according to claim 2, characterized in that: Two notches are formed on the outside of the clamp (20).

7. The rotary drilling rig bit according to claim 2, characterized in that: The bottom end of the connecting block (21) contacts the top end of the block (14), and the rear side of the connecting block (21) is slidably connected to the rear side of the inner wall of the groove (13).

8. The easily replaceable drill bit for rotary drilling rig according to claim 2, characterized in that: The exterior of the barb steel plate assembly (22) is engaged with the inner wall of the slot (12), and the rear side of the rear limit block (15) is in contact with the rear side of the inner wall of the groove (13).

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