Telescopic adjustable square drill bit

Abstract

The invention provides a telescopic adjustable square drill bit, and relates to the technical field of drilling engineering. The telescopic adjustable square drill bit comprises a connecting base, two side plates are symmetrically and fixedly installed at the bottom of the connecting base, two fixing holes are symmetrically formed in each side plate, the same fixing pin is arranged in the two corresponding fixing holes in the two side plates, the same box is rotatably installed on the fixing pins, and the box is fixedly installed on the side plates. An adjusting mechanism is arranged on the side plates, two adjusting pins are arranged on the adjusting mechanism, the box bodies are rotationally installed on the corresponding adjusting pins, the adjusting mechanism is used for adjusting the angle between the two box bodies, a power mechanism is arranged in each box body, cutting wheels are rotationally installed on the two sides of each box body, and the cutting wheels are arranged on the two sides of each box body. The power mechanism is used for providing power for rotation of the cutting wheel. The telescopic adjustable square drill bit has the advantages of being convenient to use and capable of drilling square holes suitable for different square piles.

Description

Technical Field

[0001] The invention relates to the technical field of drilling engineering, and in particular to a telescopic and adjustable square drill bit. Background Art

[0002] At present, the drilling rigs used in drilling projects all use round drill bits. All pile types (cast-in-place piles) use round drill bits to rotate 360 ​​degrees for drilling. All pile types are cylindrical, and the anti-slip piles required by the design can only be achieved by prefabricated square piles. Rotary machines cannot produce square cast-in-place piles, which greatly increases the design and construction costs. The "repose angle" of cylindrical piles is zero, and the "repose angle" of square piles can effectively increase friction resistance. Under the corresponding load, the cost of square piles is 40% of that of cylindrical piles, which reduces the construction cost and construction period and meets the design and construction requirements.

[0003] The "angle of repose" refers to the maximum angle measured when a particle is in a static state and the gravity and friction between particles are balanced when the particle slides on the free inclined plane of the powder accumulation layer in a gravitational field.

[0004] Therefore, it is necessary to provide a new telescopic adjustable square drill bit to solve the above-mentioned technical problems. Summary of the invention

[0005] The technical problem solved by the invention is to provide a telescopic and adjustable square drill bit which is easy to use and can drill square holes suitable for different square piles.

[0006] In order to solve the above technical problems, the telescopic adjustable square drill bit provided by the present invention includes: a connecting seat, two side panels are symmetrically fixedly installed on the bottom of the connecting seat, two fixing holes are symmetrically provided on the side panels, and the same fixing pin is provided in the two corresponding fixing holes located on the two side panels, and the same box body is rotatably installed on the fixing pin, an adjustment mechanism is provided on the side panel, two adjusting pins are provided on the adjusting mechanism, and the box body is rotatably installed on the corresponding adjusting pins, and the adjustment mechanism is used to adjust the angle between the two box bodies, and a power mechanism is provided in the box body, and cutting wheels are rotatably installed on both sides of the box body, and the power mechanism is used to provide power for the rotation of the cutting wheel.

[0007] Preferably, the adjustment mechanism includes two arc-shaped adjustment plates fixedly mounted on the side panels, three adjustment holes are formed on the arc-shaped adjustment plates, the three adjustment holes are distributed with the corresponding fixed holes as the axis, and the adjustment pins pass through the corresponding adjustment holes on the two side panels.

[0008] Preferably, a square connector is fixedly mounted on the top of the connecting seat, four reinforcing plates distributed in a ring shape are fixedly mounted on the side of the square connector, and the bottom of the reinforcing plate is fixedly connected to the top of the connecting seat.

[0009] Preferably, a hydraulic motor is fixedly mounted on the box body, a first gear located in the box body is fixedly mounted on the output shaft of the hydraulic motor, a rotating shaft is rotatably mounted in the box body, a second gear and a third gear are provided on an outer fixed sleeve of the rotating shaft, the second gear is meshed with the first gear, a fixed roller is rotatably mounted in the box body, both ends of the fixed roller extend outside the box body, a fourth gear is provided on an outer fixed sleeve of the fixed roller, the fourth gear is meshed with the third gear, and the cutting wheel fixed sleeve is provided on the outer side of the fixed roller.

[0010] Preferably, an adjusting cutting wheel is provided on the side of the two cutting wheels on the same box body which are away from each other, and a plurality of cutting heads are provided on the adjusting cutting wheel and the cutting wheel.

[0011] Preferably, an annular mounting block is fixedly mounted on the inner wall of the adjusting cutting wheel, and the adjusting cutting wheel is fixedly connected to the fixed roller via the annular mounting block.

[0012] Preferably, four mounting holes are symmetrically provided on the box body, the fixing holes are matched with the corresponding mounting holes, and the adjusting holes are matched with the corresponding mounting holes.

[0013] Preferably, the box body is provided with a lifting lug.

[0014] Preferably, the adjustment mechanism includes an arc-shaped adjustment hole opened on the side panel, a mounting plate is fixedly installed on the bottom of the side panel, a hydraulic cylinder is fixedly installed on the top of the mounting plate, a connecting strip is fixedly installed on the output shaft of the hydraulic cylinder, two sliding rods are symmetrically fixedly installed on the bottom of the connecting strip, an adjustment rod is installed on the sliding rod, and the adjustment rod is rotatably installed on the fixing pin and the adjusting pin respectively.

[0015] Preferably, the outer sliding sleeve of the sliding rod is provided with a guide block, the guide block is fixedly mounted on the side plate, a strip hole is opened on the adjustment rod, a connecting shaft is installed on the sliding rod, and the connecting shaft passes through the strip hole.

[0016] Compared with the related art, the telescopic and adjustable square drill bit provided by the present invention has the following beneficial effects: The present invention provides a telescopic and adjustable square drill bit, which can be conveniently and stably connected to a drilling rig on the market through a square connector; an adjustment mechanism composed of an arc-shaped adjustment plate and an adjustment hole can be adjusted according to the size of a square pile, and adjustment cutting wheels of different sizes are provided to make the drill bit suitable for a variety of square pile sizes; a reducer composed of a first gear, a connecting shaft, a second gear, a third gear and a fourth gear can increase the torque to ensure the normal operation of the cutting wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a first embodiment of a telescopic and adjustable square drill bit provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from another perspective is shown; Figure 3 for Figure 2 The cross-sectional structural diagram shown; Figure 4 for Figure 1 The cross-sectional structural diagram shown; Figure 5 for Figure 1 The schematic diagram of the installation structure of the connecting seat, side plate and direction connector shown; Figure 6 for Figure 1 A schematic diagram of a portion of the structure shown; Figure 7 for Figure 6 A schematic diagram of the structure from another perspective is shown; Figure 8 for Figure 7 The structural schematic diagram of the box shown; Fig. 9 for Figure 7 Schematic diagram of the cross-sectional connection structure of the box and the power mechanism shown Fig.10 A schematic diagram of a second embodiment of the telescopic and adjustable square drill bit provided by the present invention; Fig.11 for Fig.10 The structural schematic diagram of the adjustment mechanism is shown.

[0018] Numbers in the figure: 1. Connecting seat; 2. Side plate; 3. Arc-shaped adjustment plate; 4. Adjustment hole; 5. Fixing hole; 6. Reinforcement plate; 7. Square connector; 8. Box; 9. Mounting hole; 10. Hydraulic motor; 11. First gear; 12. Rotating shaft; 13. Second gear; 14. Third gear; 15. Fourth gear; 16. Fixed roller; 17. Cutting wheel; 18. Adjust cutting wheel; 19. Cutting head; 20. Fixing pin; 21. Adjustment pin; 22. Arc-shaped adjustment hole; 23. Mounting plate; 24. Hydraulic cylinder; 25. Connecting strip; 26. Guide block; 27. Slide rod; 28. Adjustment rod; 29. ​​First mounting hole; 30. Second mounting hole; 31. Strip hole; 32. Connecting shaft. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes. Example

[0020] Please refer to Figure 1-Figure 9In a first embodiment of the present invention, a telescopic adjustable square drill bit comprises: a connecting seat 1, two side plates 2 are symmetrically fixedly installed at the bottom of the connecting seat 1, two fixing holes 5 are symmetrically provided on the side plates 2, and the same fixing pin 20 is provided in the two corresponding fixing holes 5 on the two side plates 2, and the same box 8 is rotatably installed on the fixing pin 20, an adjustment mechanism is provided on the side plate 2, and two adjusting pins 21 are provided on the adjustment mechanism. The box 8 is rotatably installed on the corresponding adjusting pins 21, and the adjustment mechanism is used to adjust the angle between the two boxes 8, and a power mechanism is provided in the box 8, and cutting wheels 17 are rotatably installed on both sides of the box 8, and the power mechanism is used to provide power for the rotation of the cutting wheel 17.

[0021] The adjustment mechanism includes two arc-shaped adjustment plates 3 fixedly mounted on the side plates 2, and three adjustment holes 4 are opened on the arc-shaped adjustment plates 3. The three adjustment holes 4 are distributed with the corresponding fixing holes 5 as the axis, and the adjustment pins 21 pass through the corresponding adjustment holes 4 located on the two side plates 2.

[0022] In this embodiment, the number of adjustment holes 4 located on the same arc-shaped adjustment plate 3 is three.

[0023] A square connector 7 is fixedly mounted on the top of the connector base 1 , and four reinforcing plates 6 distributed in a ring shape are fixedly mounted on the side of the square connector 7 . The bottom of the reinforcing plates 6 is fixedly connected to the top of the connector base 1 .

[0024] A hydraulic motor 10 is fixedly mounted on the box body 8, and a first gear 11 located in the box body 8 is fixedly mounted on the output shaft of the hydraulic motor 10. A rotating shaft 12 is rotatably mounted in the box body 8, and a second gear 13 and a third gear 14 are fixedly sleeved on the outer side of the rotating shaft 12, and the second gear 13 is meshed with the first gear 11. A fixed roller 16 is rotatably mounted in the box body 8, and both ends of the fixed roller 16 extend to the outside of the box body 8. A fourth gear 15 is fixedly sleeved on the outer side of the fixed roller 16, and the fourth gear 15 is meshed with the third gear 14. The cutting wheel 17 is fixedly sleeved on the outer side of the fixed roller 16.

[0025] In other embodiments, the hydraulic motor 10 may be replaced with a waterproof motor.

[0026] An adjusting cutting wheel 18 is provided on the side of the two cutting wheels 17 on the same box body 8 that are away from each other. A plurality of cutting heads 19 are provided on the adjusting cutting wheel 18 and the cutting wheel 17 .

[0027] An annular mounting block is fixedly mounted on the inner wall of the adjusting cutting wheel 18 , and the adjusting cutting wheel 18 is fixedly connected to the fixed roller 16 via the annular mounting block.

[0028] The box body 8 is symmetrically provided with four mounting holes 9 , the fixing holes 5 are matched with the corresponding mounting holes 9 , and the adjusting holes 4 are matched with the corresponding mounting holes 9 .

[0029] The box body 8 is provided with lifting ears.

[0030] The working principle of the telescopic and adjustable square drill bit provided by the present invention is as follows: When in use, firstly, the entire drill bit is connected to the drilling rig through the square connector 7, and then the hydraulic motor 10 is connected to the corresponding hydraulic system. Then, it is determined whether the cutting wheel 18 needs to be adjusted according to the size of the square pile to be installed. If not, just remove the adjusting cutting wheel 18. If necessary, select a suitable adjusting cutting wheel 18 and install it on the cutting wheel 17. At this time, the size adjustment of a group of opposite sides of the square pile corresponding to the drill bit is completed; then, according to the size of the square pile to be installed, the adjusting pin 21 is installed in the appropriate adjusting hole 4, so that the angle between the two boxes 8 can be adjusted, so that the distance between the two cutting wheels 17 can be adjusted, so that the distance between the two cutting wheels 17 can adapt to the size of another group of opposite sides of the square pile; Then start the hydraulic motor 10, which drives the fixed roller 16 to rotate through the reducer composed of the first gear 11, the second gear 13, the third gear 14 and the fourth gear 15. The fixed roller 16 drives the cutting wheel 17 and the adjusting cutting wheel 18 to rotate, and the cutting wheel 17 and the adjusting cutting wheel 18 drive the cutting head 19 to rotate, so that the ground can be drilled until the required drilling depth is reached. Turn off the hydraulic motor 10, take out the drill bit through the drilling rig, and the drilling of the square hole is completed.

[0031] Compared with the related art, the telescopic and adjustable square drill bit provided by the present invention has the following beneficial effects: The present invention provides a telescopic and adjustable square drill bit, which can be conveniently and stably connected to a drilling rig on the market through a square connector 7; an adjustment mechanism composed of an arc-shaped adjustment plate 3 and an adjustment hole 4 can be adjusted according to the size of a square pile, and at the same time, adjustment cutting wheels 18 of different sizes are arranged to make the drill bit suitable for a variety of square pile sizes; a reducer composed of a first gear 11, a rotating shaft 12, a second gear 13, a third gear 14 and a fourth gear 15 can increase the torque to ensure the normal operation of the cutting wheel 17.

[0032] Second embodiment: Based on the telescopically adjustable square drill bit provided in the first embodiment of the present application, the second embodiment of the present application provides another telescopically adjustable square drill bit. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0033] The second embodiment of the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0034] Please refer to Fig.10 and Fig.11 The difference between this embodiment and the first embodiment is that, in this embodiment, the adjustment mechanism includes an arc-shaped adjustment hole 22 opened on the side plate 2, a mounting plate 23 is fixedly installed on the bottom of the side plate 2, a hydraulic cylinder 24 is fixedly installed on the top of the mounting plate 23, a connecting bar 25 is fixedly installed on the output shaft of the hydraulic cylinder 24, two sliding rods 27 are symmetrically fixedly installed on the bottom of the connecting bar 25, an adjusting rod 28 is installed on the sliding rod 27, and the adjusting rod 28 is rotatably installed on the fixing pin 20 and the adjusting pin 21 respectively.

[0035] The adjusting rod 28 is provided with a first mounting hole 29 and a second mounting hole 30 . The fixing pin 20 passes through the first mounting hole 29 , and the adjusting pin 21 passes through the second mounting hole 30 .

[0036] The outer sliding sleeve of the slide bar 27 is provided with a guide block 26 , and the guide block 26 is fixedly mounted on the side plate 2 . The adjustment rod 28 is provided with a strip hole 31 , and a connecting shaft 32 is installed on the slide bar 27 , and the connecting shaft 32 passes through the strip hole 31 .

[0037] In this embodiment, when it is necessary to adjust the distance between the two cutting wheels 17, it is only necessary to start the hydraulic cylinder 24, the hydraulic cylinder 24 drives the connecting bar 25 to move, the connecting bar 25 drives the slide bar 27 to move upward or downward in the guide block 26, and the slide bar 27 drives the adjustment rod 28 to rotate around the first mounting hole 29 and the fixing pin 20 through the connecting shaft 32, so that the adjustment rod 28 drives the adjustment pin 21 to rotate, the adjustment pin 21 drives the box body 8 to rotate, and the box body 8 drives the cutting wheel 17 to rotate around the fixing pin 20 as the axis, so that the distance between the two cutting wheels 17 can be adjusted to adapt to the size of the square pile.

[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A telescopic and adjustable square drill bit, characterized in that: include: A connecting seat, wherein two side plates are symmetrically fixedly installed at the bottom of the connecting seat, two fixing holes are symmetrically provided on the side plates, and the same fixing pin is provided in the two corresponding fixing holes on the two side plates, and the same box body is rotatably installed on the fixing pin, and an adjustment mechanism is provided on the side plate, and two adjusting pins are provided on the adjusting mechanism, and the box body is rotatably installed on the corresponding adjusting pins, and the adjusting mechanism is used to adjust the angle between the two box bodies, and a power mechanism is provided in the box body, and cutting wheels are rotatably installed on both sides of the box body, and the power mechanism is used to provide power for the rotation of the cutting wheel; The adjustment mechanism comprises two arc-shaped adjustment plates fixedly mounted on the side plates, three adjustment holes are formed on the arc-shaped adjustment plates, the three adjustment holes are distributed with the corresponding fixing holes as the axis, and the adjustment pins penetrate the corresponding adjustment holes on the two side plates; A square connector is fixedly mounted on the top of the connection seat, and four reinforcing plates distributed in a ring shape are fixedly mounted on the side of the square connector, and the bottom of the reinforcing plate is fixedly connected to the top of the connection seat; A hydraulic motor is fixedly installed on the box body, and a first gear located in the box body is fixedly installed on the output shaft of the hydraulic motor. A rotating shaft is rotatably installed in the box body, and a second gear and a third gear are provided on an outer fixed sleeve of the rotating shaft, and the second gear is meshed with the first gear. A fixed roller is rotatably installed in the box body, and both ends of the fixed roller extend outside the box body, and a fourth gear is provided on the outer fixed sleeve of the fixed roller, and the fourth gear is meshed with the third gear. The cutting wheel fixed sleeve is provided on the outer side of the fixed roller.

2. The telescopic and adjustable square drill bit according to claim 1, characterized in that: An adjusting cutting wheel is provided on the side of the two cutting wheels on the same box body which are away from each other, and a plurality of cutting heads are provided on the adjusting cutting wheel and the cutting wheel.

3. The telescopic and adjustable square drill bit according to claim 2, characterized in that: An annular mounting block is fixedly mounted on the inner wall of the adjusting cutting wheel, and the adjusting cutting wheel is fixedly connected to the fixed roller via the annular mounting block.

4. The telescopic and adjustable square drill bit according to claim 3, characterized in that: The box body is symmetrically provided with four mounting holes, the fixing holes are matched with the corresponding mounting holes, and the adjusting holes are matched with the corresponding mounting holes.

5. The telescopic and adjustable square drill bit according to claim 3, characterized in that: The box body is provided with a lifting lug.

6. The telescopic and adjustable square drill bit according to claim 3, characterized in that: The adjustment mechanism includes an arc-shaped adjustment hole opened on the side plate, a mounting plate is fixedly installed on the bottom of the side plate, a hydraulic cylinder is fixedly installed on the top of the mounting plate, a connecting strip is fixedly installed on the output shaft of the hydraulic cylinder, two sliding rods are symmetrically fixedly installed on the bottom of the connecting strip, an adjustment rod is installed on the sliding rod, and the adjustment rod is rotatably installed on the fixing pin and the adjusting pin respectively.

7. The telescopic and adjustable square drill bit according to claim 6, characterized in that: The outer sliding sleeve of the slide rod is provided with a guide block, and the guide block is fixedly mounted on the side plate. The adjustment rod is provided with a strip hole, and the slide rod is provided with a connecting shaft, and the connecting shaft passes through the strip hole.

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