Highway bridge construction drilling platform

Abstract

The invention discloses a highway bridge construction drilling platform which comprises a drilling platform body fixedly installed at the tail end of an engineering vehicle, an inverted-L-shaped frame, a lifting plate, a spiral drill rod and other key components, a knocking mechanism is arranged on the lifting plate, and the spiral drill rod is driven to do lifting reciprocating motion through transmission of a cylindrical sleeve, an inclined circular plate, an arc-shaped sliding block and a gear; and the platform is further provided with an adjusting mechanism, the drilling depth of the spiral drilling rod is accurately controlled through threaded connection matching of a threaded rod and a threaded sleeve block, and the drilling precision is enhanced. The dust falling mechanism atomizes and sprays a water source to a drilling hole through cooperation of a piston plate, a pull rod and a one-way valve, dust falling is achieved, a third gear at the bottom end of a fixing ring drives a bulldozing plate to conduct circular motion, crushed soil at the drilling hole is moved and transported, and drilling hole backfilling is prevented. And efficient, accurate and environment-friendly highway bridge construction drilling operation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of highway bridge construction drilling, and specifically to a drilling platform for highway bridge construction. Background Art

[0002] Highway bridge engineering refers to all work such as the planning, design, construction, maintenance, and repair of structures that cross waters, valleys, and all traffic channels. Since the geological conditions of highway bridge engineering are relatively complex, the structure is large, and the importance is high, the foundation structure needs to bear a large load. Therefore, during the construction of highway bridge engineering, for sections where the foundation has not been established, pile holes are formed in the foundation soil by means of mechanical drilling, steel pipe soil extrusion, or manual excavation, and steel reinforcement cages are placed therein and concrete is poured to lay a solid foundation for building the bearing platform in the future. According to different hole-forming methods, bored cast-in-place piles can be divided into several categories such as pipe-sinking cast-in-place piles, bored cast-in-place piles, and dug cast-in-place piles. The existing drilling platforms for highway bridge construction have deficiencies in terms of drilling efficiency, adaptability, and accuracy. Especially when facing drilling tasks with complex geological conditions and high-precision requirements, the limitations of traditional technologies are more obvious.

[0003] The existing Chinese patent with the publication number CN116255084B includes a bracket and a spiral drill installed at the rear end of an engineering vehicle. A lifting plate is slidably installed on the side wall of the bracket away from the engineering vehicle. A threaded rod that penetrates through the lifting plate is rotatably installed on one side of the bracket. The spiral drill is rotatably installed at the bottom end of the lifting plate. A connecting seat penetrated by the threaded rod is slidably sleeved on the bracket. The end of the connecting seat away from the bracket is fixedly installed with a guiding seat penetrated by the spiral drill. A soil collection cavity is formed inside the guiding seat. A soil cleaning groove is formed at the bottom end inside the soil collection cavity. A rotating ring pipe is rotatably installed inside the soil collection cavity. Soil cleaning plates are symmetrically distributed below the rotating ring pipe.

[0004] When the above device is in use, during the process of driving the spiral drill to drill downward by setting the threaded rod, the threaded rod simultaneously drives the rotating ring pipe to rotate through the transmission of a one-way conveying box body. The rotating ring pipe drives the soil cleaning plates to rotate, and the soil cleaning plates sweep the soil brought out by the drilling. When the soil cleaning plates reach the soil cleaning groove, the soil will enter the soil cleaning groove, and the soil brought out by the drilling can be collected in a timely manner, which is convenient for cleaning. However, in the actual use process, due to the hardness of rock formations at different depths, when the drill rod encounters a harder rock formation, the drilling speed is slow, which affects the drilling speed. Therefore, it is difficult to drive the drill rod to reciprocate up and down to break the rock formation.

[0005] Therefore, we propose a drilling platform for highway bridge construction. Summary of the Invention

[0006] The object of the present invention is to provide a drilling platform for highway bridge construction, which has the advantage of driving the drill rod to reciprocate up and down to break the rock formation, and solves the problems in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: A drilling platform for highway bridge construction, including a drilling platform body fixedly installed at the rear end of the engineering vehicle. One side of the drilling platform body is fixedly connected with an inverted L-shaped frame, and an activity groove is opened on the inverted L-shaped frame. The inner wall of the activity groove is movably connected with a lifting plate that reciprocates up and down. The lifting plate is penetrated and rotatably connected with a rotating sleeve. The inner wall of the lifting plate is connected with a spiral drill rod that moves up and down for drilling. The top end of the inverted L-shaped frame is penetrated and fixedly rotatably connected with a spline shaft rod that is driven by a power mechanism to reciprocate. The bottom end of the spline shaft rod penetrates into the inner wall of the spiral drill rod and is connected with it for lifting and moving. On both sides of the lifting plate near the rotating sleeve at symmetric positions, there are penetrated and fixedly connected with cylindrical shells. The cylindrical shells are provided with a knocking mechanism for driving the spiral drill rod to reciprocate up and down.

[0008] Preferably, the knocking mechanism includes cylindrical sleeves rotatably connected to the outer contours of the two cylindrical shells near the ends. On the outer contours of the two cylindrical sleeves, there are fixedly connected with inclined circular plates for supporting the spiral drill rod. On the outer contour of the spiral drill rod near the end, there is fixedly connected with a support plate. At symmetric positions at both ends of the support plate, there are fixedly connected with arc-shaped sliders. On the outer contours of the two inclined circular plates, there are opened annular grooves for supporting the arc-shaped sliders. The two arc-shaped sliders respectively penetrate into the inner walls of the adjacent annular grooves and are movably connected.

[0009] Preferably, a first gear for driving the cylindrical sleeve to rotate is fixedly connected to the outer contour of the rotating sleeve near the end. On the outer contours of the two cylindrical sleeves, there are fixedly connected with second gears that are meshed and driven with the first gear.

[0010] Preferably, the inverted L-shaped frame is provided with an adjusting mechanism for adjusting the drilling depth of the spiral drill rod. The adjusting mechanism includes a threaded rod fixedly rotatably connected to the inner wall of the activity groove of the inverted L-shaped frame for driving the lifting plate to move up and down. The lifting plate is penetrated and fixedly connected with a threaded sleeve block, and the threaded sleeve block is sleeved on the outer contour of the threaded rod and is screwed.

[0011] Preferably, a second pulley for driving the threaded rod to rotate axially and reciprocally is coaxially fixedly connected to the end of the spline shaft rod. A water storage tank is coaxially fixedly connected to the position corresponding to the end of the threaded rod. A transmission belt for driving the threaded rod to rotate axially and reciprocally is sleeved in the chute on the outer contours of the second pulley and the water storage tank.

[0012] Preferably, a dust reduction mechanism for dust reduction around the drill hole is provided on the drill platform body. The dust reduction mechanism includes a water storage tank fixedly connected to the drill platform body for storing water. On both sides of the two cylindrical shells near the bottom, water inlet pipes and drain pipes are respectively penetrated and fixedly connected. The bottom ends of the two water inlet pipes penetrate to the inner wall of the water storage tank and are fixedly connected. A fixing ring is fixedly connected to the bottom of the drill platform body. Atomizing nozzles for atomizing and spraying water to the drill hole are respectively penetrated and fixedly connected at symmetrical positions on both sides of the fixing ring. The bottom ends of the two drain pipes respectively penetrate to the inner wall of the adjacent atomizing nozzle and are fixedly connected.

[0013] Preferably, a piston plate for extracting and discharging the water source inside the water storage tank is connected to the inner walls of the two cylindrical shells in a lifting and moving manner. Pulling rods are fixedly connected to both piston plates. One end of each of the two pulling rods away from the piston plate is fixedly connected to a support plate. One-way liquid inlet valves and one-way liquid discharge valves are fixedly connected to the inner walls of the water inlet pipe and the drain pipe near one end of the cylindrical shell on each side.

[0014] Preferably, a third gear is rotatably connected to the bottom end of the fixing ring. A plurality of earth pushing plates for transporting the broken soil around the drill hole are fixedly connected to the bottom of the third gear, and the earth pushing plates are evenly arranged on the third gear. A fourth gear for driving the first pulley to rotate is coaxially fixedly connected to the bottom end of the threaded rod, and the teeth of the fourth gear mesh with the teeth of the third gear.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: First, through the cooperation of the cylindrical sleeve, the inclined circular plate, the arc-shaped slider and the gear transmission, the spiral drill rod can perform lifting and reciprocating movements, repeatedly strike the rock formation, apply impact force on the surface of the rock formation, and promote the fragmentation of the rock formation. Compared with the traditional single rotary drilling, it can more effectively break harder rock formations, accelerate the drilling speed, and significantly improve the drilling efficiency. Especially when facing rock formations with different depths and different hardnesses, the advantages are more obvious. It can effectively solve the problem of slow drilling speed of the traditional drilling method when encountering hard rock formations. At the same time, since the knocking mechanism can drive the spiral drill rod to perform regular lifting and reciprocating movements, the force on the drill rod during the drilling process is more uniform, avoiding the situation of excessive local wear of the drill rod caused by long-term single-direction rotary drilling, thereby effectively extending the service life of the spiral drill rod and reducing the construction cost.

[0016] II. Through the screwing fit of the threaded rod and the threaded sleeve block, and the scale lines provided on the inverted L-shaped frame, the lifting and moving distance of the lifting plate and the screw drill rod can be accurately controlled, thereby realizing the precise adjustment of the drilling depth. Construction workers can intuitively observe and adjust the drilling depth according to the scale lines, ensuring that the drilling depth strictly meets the design requirements, improving the accuracy and quality of drilling, and is of great significance for the strict control of the drilling depth in the construction of highway bridge foundations.

[0017] III. Through the cooperation of the water storage tank, the water inlet pipe, the drain pipe, the atomizing nozzle, as well as the piston plate, the pull rod and the one-way valve, the water source is atomized and sprayed onto the drilling site, which can timely and effectively carry out dust reduction treatment on the dust generated during the drilling process. This not only reduces the pollution of the dust to the surrounding environment and avoids the situation of dust flying all over the construction site, but also reduces the harm caused by the dust to the physical health of construction workers, providing a cleaner and healthier working environment for construction workers, meeting the requirements of modern construction for environmental protection and occupational health. At the same time, a good construction environment also helps to improve the work efficiency and construction quality of construction workers, thereby indirectly reducing the construction cost and improving the economic benefits of the entire project.

[0018] IV. The third gear at the bottom of the fixed ring drives the bulldozing plate to perform circular motion, guiding and transporting the broken soil at the drilling site towards the outside, effectively preventing the broken soil from backfilling into the drill hole. During the drilling construction process, if the broken soil backfills, it will not only affect the drilling depth and quality, but may also cause accidents such as drill pipe jamming. Through the transporting function of the bulldozing plate, the cleanliness and smoothness of the drill hole are ensured, providing good conditions for subsequent construction processes such as placing the steel reinforcement cage and pouring concrete, guaranteeing the smooth progress of the construction. Furthermore, timely transporting the broken soil at the drilling site can prevent the broken soil from accumulating around the drill hole and affecting the passage and operation of construction workers, reducing the probability of safety accidents such as falling and slipping that construction workers may encounter due to the sliding and accumulation of broken soil, improving the safety of the construction site, and providing better protection for the personal safety of construction workers.

[0019] Through the combined use of the above structures, the problem that in the actual use process of the existing device, due to the hardness of rock formations at different depths, when the drill pipe encounters a harder rock formation, the drilling speed is slow, thereby affecting the drilling speed, and it is difficult to drive the drill pipe to reciprocate up and down to break the rock formation is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a sectional three-dimensional structural schematic diagram of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the part where the rotating sleeve is located in the present invention; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at position A in the present invention; Figure 5 For the present invention Figure 3 Schematic diagram of the structure at position B in the present invention; Figure 6 Schematic cross-sectional view of the three-dimensional structure of the cylindrical shell part of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure at position C in the present invention; Figure 8 Schematic three-dimensional structure diagram of the part where the third gear of the present invention is located.

[0021] In the figure: 1. Drilling platform body; 2. Inverted L-shaped frame; 202. Movable groove; 3. Lifting plate; 4. Rotating sleeve; 5. Spiral drill rod; 6. Spline shaft rod; 7. Cylindrical shell; 8. Cylindrical sleeve; 9. Obliquely arranged circular plate; 901. Annular groove; 10. Support plate; 11. Arc-shaped slider; 12. First gear; 13. Second gear; 14. Threaded rod; 15. Threaded sleeve block; 16. First pulley; 17. Second pulley; 18. Transmission belt; 19. Water storage tank; 20. Water inlet pipe; 201. One-way liquid inlet valve; 21. Drain pipe; 211. One-way liquid discharge valve; 22. Fixed ring; 23. Atomizing nozzle; 24. Pull rod; 25. Piston plate; 26. Third gear; 27. Earth-pushing plate; 28. Fourth gear. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Example 1, please refer to Figures 1 to 8, the present invention provides a technical solution: a drilling platform for highway bridge construction, including a drilling platform body 1 fixedly installed at the rear end of an engineering vehicle. On one side of the drilling platform body 1, an inverted L-shaped frame 2 is fixedly connected, and an activity groove 202 is opened on the inverted L-shaped frame 2. An elevating plate 3 that moves up and down reciprocally is movably connected to the inner wall of the activity groove 202. A rotating sleeve 4 is penetrated and rotatably connected to the elevating plate 3. A spiral drill rod 5 for drilling is connected to move up and down inside the inner wall of the elevating plate 3. The top of the inverted L-shaped frame 2 is penetrated and fixedly rotationally connected with a spline shaft rod 6 that is reciprocally rotated by a power mechanism. The bottom end of the spline shaft rod 6 penetrates into the inner wall of the spiral drill rod 5 and is connected to move up and down. On both sides of the elevating plate 3 near the rotating sleeve 4 at symmetric positions, cylindrical shells 7 are penetrated and fixedly connected. A knocking mechanism for driving the spiral drill rod 5 to move up and down reciprocally is provided on the cylindrical shell 7.

[0024] When in use, by setting the drilling platform body 1 and installing the drilling platform body 1 at the rear end of the engineering vehicle, the engineering vehicle can move the drilling platform body 1 to the drilling area. Through the inverted L-shaped frame 2 provided on the drilling platform body 1, the inverted L-shaped frame 2 is fixedly supported on the drilling platform body 1. Through the activity groove 202 opened on the inverted L-shaped frame 2 and the elevating plate 3 provided on the activity groove 202, the elevating plate 3 can move up and down on the inner wall of the activity groove 202. Through the rotating sleeve 4 provided on the elevating plate 3, the rotating sleeve 4 can be rotatably supported on the elevating plate 3. Through the spiral drill rod 5 provided on the elevating plate 3 and the spline shaft rod 6 provided on the inverted L-shaped frame 2, the spline shaft rod 6 is connected to move up and down inside the inner wall of the spiral drill rod 5, and the spline shaft rod 6 is driven to rotate by a motor. Thus, the motor can drive the spiral drill rod 5 to rotate synchronously and reciprocally around a fixed axis through the spline shaft rod 6, realizing the operation of driving the spiral drill rod 5 to rotate for drilling.

[0025] Moreover, the spiral drill rod 5 is connected to move up and down inside the inner wall of the rotating sleeve 4, enabling the spiral drill rod 5 to drive the rotating sleeve 4 to rotate around a fixed axis on the elevating plate 3. Through the cylindrical shell 7 provided on the elevating plate 3, the cylindrical shell 7 is fixedly supported on the elevating plate 3, and the knocking mechanism provided on the cylindrical shell 7 can enable the knocking mechanism to drive the spiral drill rod 5 to reciprocally knock the rock formation. Then, the spiral drill rod 5 can break the rock formation, improving the drilling efficiency of the spiral drill rod 5.

[0026] Embodiment 2, on the basis of Embodiment 1, further: The knocking mechanism includes cylindrical sleeves 8 rotatably connected to the outer contours near the ends of two cylindrical shells 7. Oblique circular plates 9 for supporting the spiral drill rod 5 are fixedly connected to the outer contours of the cylindrical sleeves 8 on both sides. A support plate 10 is fixedly connected to the outer contour of the spiral drill rod 5 near the end. Arc-shaped sliders 11 are fixedly connected to symmetric positions at both ends of the support plate 10. Annular grooves 901 for supporting the arc-shaped sliders 11 are formed in the outer contours of the oblique circular plates 9 on both sides. The arc-shaped sliders 11 on both sides penetrate through the inner walls of the adjacent annular grooves 901 and are movably connected.

[0027] A first gear 12 for driving the cylindrical sleeve 8 to rotate is fixedly connected to the outer contour of the rotating sleeve 4 near the end. Second gears 13 meshing with the first gear 12 are fixedly connected to the outer contours of the cylindrical sleeves 8 on both sides.

[0028] During use, through the cylindrical sleeve 8 provided on the cylindrical shell 7, the cylindrical sleeve 8 can be rotatably connected to the outer contour of the cylindrical shell 7. And the oblique circular plate 9 provided on the cylindrical sleeve 8 is fixedly supported on the cylindrical sleeve 8. Through the support plate 10 provided on the spiral drill rod 5, the support plate 10 can be sleeved on the outer contour of the spiral drill rod 5 and rotatably connected. Through the annular groove 901 formed in the oblique circular plate 9 and the arc-shaped slider 11 provided on the support plate 10, the annular groove 901 can movably support the arc-shaped slider 11 on the inner wall. At the same time, the arc-shaped slider 11 can support the support plate 10 under the action of the annular groove 901, so that the spiral drill rod 5 can perform fixed-axis rotation on the inner wall of the support plate 10.

[0029] When drilling, through the first gear 12 provided on the rotating sleeve 4, along with the spiral drill rod 5 driving the rotating sleeve 4 to rotate, the rotating sleeve 4 can drive the first gear 12 to rotate synchronously. Through the second gear 13 provided on the cylindrical sleeve 8, and the teeth of the second gear 13 and the first gear 12 meshing with each other, thus the second gear 13 can drive the cylindrical sleeve 8 to rotate synchronously on the outer contour of the cylindrical shell 7 under the action of the first gear 12, and the cylindrical sleeve 8 can drive the oblique circular plate 9 to rotate. Along with the oblique circular plate 9 being obliquely placed on the cylindrical sleeve 8, further, the arc-shaped slider 11 can pull the spiral drill rod 5 to perform reciprocating lifting movement through the support plate 10 under the action of the annular groove 901, realizing that the spiral drill rod 5 can reciprocally knock on the rock formation. Then the spiral drill rod 5 can apply an impact force on the surface of the rock formation, promoting the fragmentation of the rock formation and further improving the drilling efficiency.

[0030] Embodiment 3, on the basis of Embodiment 2, further: The inverted L-shaped frame 2 is provided with an adjusting mechanism for adjusting the drilling depth of the spiral drill rod 5. The adjusting mechanism includes a threaded rod 14 that penetrates through the inverted L-shaped frame 2 to the inner wall of the movable groove 202 and is rotatably connected to the fixed axis to drive the lifting plate 3 to move up and down. The lifting plate 3 is penetrated and fixedly connected with a threaded sleeve block 15. The threaded sleeve block 15 is sleeved on the outer contour of the threaded rod 14 and is screwed.

[0031] The end of the spline shaft rod 6 is coaxially fixedly connected with a second pulley 17 that drives the threaded rod 14 to rotate axially and reciprocally. A water storage tank 19 is coaxially fixedly connected to the position corresponding to the end of the threaded rod 14. A transmission belt 18 that drives the threaded rod 14 to rotate axially and reciprocally is sleeved in the chute on the outer contour of the second pulley 17 and the water storage tank 19.

[0032] During use, through the threaded rod 14 arranged on the inverted L-shaped frame 2, the threaded rod 14 can be rotatably connected to the fixed axis on the inverted L-shaped frame 2. Through the second pulley 17 arranged on the spline shaft rod 6, and the second pulley 17 is coaxially fixedly connected with the spline shaft rod 6, the spline shaft rod 6 can drive the second pulley 17 to rotate axially and reciprocally synchronously. Through the first pulley 16 arranged on the threaded rod 14, and the transmission belt 18 arranged on the first pulley 16 and the second pulley 17, the transmission belt 18 is sleeved in the chute on the outer contours of the first pulley 16 and the second pulley 17. Along with the spline shaft rod 6 driving the second pulley 17 to rotate axially and reciprocally, the transmission belt 18 can drive the first pulley 16 and the threaded rod 14 to rotate axially and reciprocally synchronously on the inverted L-shaped frame 2 under the action of the second pulley 17. Through the threaded sleeve block 15 arranged on the lifting plate 3, and the threaded sleeve block 15 is sleeved on the outer contour of the threaded rod 14 and is screwed. Along with the threaded rod 14 rotating axially and reciprocally, the threaded sleeve block 15 can drive the lifting plate 3 to move up and down reciprocally on the inner wall of the movable groove 202 under the action of the threaded rod 14. At the same time, the lifting plate 3 can drive the spiral drill rod 5 to move up and down reciprocally synchronously on the spline shaft rod 6.

[0033] And the radius of the first pulley 16 is greater than the radius of the second pulley 17. Along with the spline shaft rod 6 driving the spiral drill rod 5 to drill, the lifting plate 3 can drive the spiral drill rod 5 to move slowly in the downward vertical direction, realizing that the lifting plate 3 can drive the spiral drill rod 5 to move downward for drilling construction. And a scale line is arranged on one side of the inverted L-shaped frame 2, so that the personnel can directly see the drilling depth of the spiral drill rod 5, further improving the drilling accuracy of the spiral drill rod 5.

[0034] When the drilling is completed, the above structure moves in the opposite direction for resetting, and then the lifting plate 3 can pull the spiral drill rod 5 to move upward and reset out of the drill hole.

[0035] Embodiment 4, on the basis of Embodiment 3, further: A dust reduction mechanism for dust reduction around the drilling is provided on the drilling platform body 1. The dust reduction mechanism includes a water storage tank 19 fixedly connected to the drilling platform body 1 for storing water. On both sides of the two cylindrical shells 7 near the bottom end, a water inlet pipe 20 and a drain pipe 21 are respectively penetrated and fixedly connected. The bottom ends of the two water inlet pipes 20 penetrate to the inner wall of the water storage tank 19 and are fixedly connected. A fixing ring 22 is fixedly connected to the bottom of the drilling platform body 1. Atomizing nozzles 23 for atomizing and spraying water to the drilling area are penetrated and fixedly connected at symmetric positions on both sides of the fixing ring 22. The bottom ends of the two drain pipes 21 penetrate to the inner wall of the adjacent atomizing nozzle 23 and are fixedly connected.

[0036] A piston plate 25 for pumping and discharging the water source inside the water storage tank 19 is connected to the inner walls of the two cylindrical shells 7 in a lifting and moving manner. A pull rod 24 is fixedly connected to each of the two piston plates 25. One end of each of the two pull rods 24 away from the piston plate 25 is fixedly connected to the support plate 10. A one-way liquid inlet valve 201 and a one-way liquid discharge valve 211 are fixedly connected to the inner walls of the water inlet pipe 20 and the drain pipe 21 near one end of the cylindrical shell 7 on each side.

[0037] During use, the water storage tank 19 on the drilling platform body 1 is filled with water. Through the water inlet pipe 20 and the drain pipe 21 provided on the cylindrical shell 7, the water inlet pipe 20 and the drain pipe 21 are both communicated with the inner wall of the cylindrical shell 7. At the same time, the water inlet pipe 20 can communicate the water storage tank 19 with the inner wall of the cylindrical shell 7. Through the fixing ring 22 provided on the drilling platform body 1, the fixing ring 22 is fixedly supported at the bottom of the drilling platform body 1. Through the atomizing nozzles 23 provided on the fixing ring 22, the drain pipe 21 can communicate the atomizing nozzles 23 with the inner wall of the cylindrical shell 7.

[0038] Through the piston plate 25 provided on the cylindrical housing 7, and the piston plate 25 is in contact with the inner wall of the cylindrical housing 7, the piston plate 25 is connected to move up and down on the inner wall of the cylindrical housing 7. Through the pull rod 24 provided on the piston plate 25, both ends of the pull rod 24 are respectively fixed and supported on the piston plate 25 and the support plate 10. Along with the support plate 10 driving the auger 5 to move up and down reciprocally, the pull rod 24 can pull the piston plate 25 to move up and down reciprocally synchronously on the inner wall of the cylindrical housing 7 under the action of the support plate 10. Through the one-way inlet valve 201 and the one-way drain valve 211 provided on the water inlet pipe 20 and the drain pipe 21, when the pull rod 24 pulls the piston plate 25 to move towards the end away from the water inlet pipe 20, the air pressure inside the cylindrical housing 7 near the water inlet pipe 20 is in a negative pressure state. At this time, the one-way inlet valve 201 is in an open state, and the one-way drain valve 211 is in a closed state. Furthermore, the water inlet pipe 20 can quantitatively extract the water source inside the water storage tank 19 to the inner wall of the cylindrical housing 7. When the pull rod 24 pushes the piston plate 25 to move towards the end close to the water inlet pipe 20, and the air pressure inside the cylindrical housing 7 near the water inlet pipe 20 is in a positive pressure state. At this time, the one-way inlet valve 201 is in a closed state, and the one-way drain valve 211 is in an open state. Then the drain pipe 21 can discharge the water source inside the cylindrical housing 7 to the inner wall of the atomizing nozzle 23, and the atomizing nozzle 23 can atomize and spray the water source to the drilling area, which can make the water mist perform dust reduction treatment on the dust in the drilling area, avoiding the problem that the dust pollutes the air and causes the surrounding personnel to inhale and cause harm to the body.

[0039] Embodiment 5, on the basis of Embodiment 4, furthermore: The bottom end of the fixed ring 22 is rotatably connected with a third gear 26. The bottom of the third gear 26 is fixedly connected with a plurality of earth-moving plates 27 for moving the crushed soil around the drilling. The earth-moving plates 27 are evenly arranged on the third gear 26. The bottom end of the threaded rod 14 is coaxially fixedly connected with a fourth gear 28 that drives the first pulley 16 to rotate, and the teeth of the fourth gear 28 are meshed with the teeth of the third gear 26.

[0040] In use, through the third gear 26 provided on the fixing ring 22, the third gear 26 is rotatably connected to the bottom end of the fixing ring 22, and the earth-pushing plate 27 provided on the third gear 26 is fixedly supported on the third gear 26. Through the fourth gear 28 provided on the threaded rod 14, and the fourth gear 28 is coaxially fixed to the threaded rod 14, the threaded rod 14 can drive the fourth gear 28 to rotate synchronously. Along with the meshing transmission between the fourth gear 28 and the third gear 26, the third gear 26 can drive the earth-pushing plate 27 to perform a circular motion at the drilling position under the action of the fourth gear 28. And the earth-pushing plate 27 is inclined on the third gear 26, so that the earth-pushing plate 27 can guide the crushed soil at the drilling position towards the outside, avoiding the problem of the backfill of the crushed soil at the drilling position.

[0041] Furthermore, it is realized that during the actual use of the existing device, the drill rod can be driven to reciprocate up and down to break the rock formation, improving the drilling efficiency, being convenient to use, and being better than traditional products.

[0042] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the specification and drawings, they can also be directly processed according to the existing common technical knowledge without any doubt. At the same time, the connection methods of each component adopt the mature conventional means in the existing technology, and the machines, parts and equipment all adopt the conventional models in the existing technology, so no specific description will be made here.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling platform for highway bridge construction, characterized in that: It includes a drilling platform body (1) fixedly installed at the rear end of the engineering vehicle. On one side of the drilling platform body (1), an inverted L-shaped frame (2) is fixedly connected. An activity groove (202) is opened on the inverted L-shaped frame (2). A lifting plate (3) that moves up and down reciprocally is movably connected to the inner wall of the activity groove (202). A rotating sleeve (4) is penetrated and rotatably connected to the lifting plate (3). A spiral drill rod (5) for drilling is connected to move up and down inside the inner wall of the lifting plate (3). The top of the inverted L-shaped frame (2) is penetrated and fixedly rotatably connected to a spline shaft rod (6) that is driven to rotate reciprocally by a power mechanism. The bottom end of the spline shaft rod (6) penetrates to the inner wall of the spiral drill rod (5) and is connected to move up and down. On both sides of the lifting plate (3) near the rotating sleeve (4) at symmetric positions, cylindrical shells (7) are penetrated and fixedly connected. A knocking mechanism for driving the spiral drill rod (5) to move up and down reciprocally is provided on the cylindrical shells (7).

2. The drilling platform for highway bridge construction according to claim 1, characterized in that: The knocking mechanism includes cylindrical sleeves (8) rotatably connected to the outer contours near the ends of the two cylindrical shells (7). Obliquely arranged circular plates (9) for supporting the spiral drill rod (5) are fixedly connected to the outer contours of the cylindrical sleeves (8) on both sides. A support plate (10) is fixedly connected to the outer contour of the spiral drill rod (5) near the end. Arc-shaped sliders (11) are fixedly connected to the symmetric positions at both ends of the support plate (10). Annular grooves (901) for supporting the arc-shaped sliders (11) are opened on the outer contours of the obliquely arranged circular plates (9) on both sides. The arc-shaped sliders (11) on both sides penetrate to the inner walls of the annular grooves (901) on the adjacent side and are movably connected respectively.

3. A drilling platform for highway bridge construction according to claim 2, characterized in that: A first gear (12) for driving the cylindrical sleeve (8) to rotate is fixedly connected to the outer contour of the rotating sleeve (4) near the end. Second gears (13) that mesh and drive with the first gear (12) are fixedly connected to the outer contours of the cylindrical sleeves (8) on both sides.

4. A drilling platform for highway bridge construction according to claim 3, characterized in that: An adjusting mechanism for adjusting the drilling depth of the spiral drill rod (5) is provided on the inverted L-shaped frame (2). The adjusting mechanism includes a threaded rod (14) that penetrates to the inner wall of the activity groove (202) on the inverted L-shaped frame (2) and is fixedly rotatably connected to drive the lifting plate (3) to move up and down for adjustment. A threaded sleeve block (15) is penetrated and fixedly connected to the lifting plate (3). The threaded sleeve block (15) is sleeved on the outer contour of the threaded rod (14) and is screwed.

5. A drilling platform for highway bridge construction according to claim 4, characterized in that: A second pulley (17) for driving the threaded rod (14) to rotate axially and reciprocally is coaxially fixedly connected to the end of the spline shaft rod (6). A water storage tank (19) is coaxially fixedly connected to the position corresponding to the second pulley (17) at the end of the threaded rod (14). A transmission belt (18) for driving the threaded rod (14) to rotate axially and reciprocally is sleeved in the chute on the outer contours of the second pulley (17) and the water storage tank (19).

6. The drilling platform for highway bridge construction according to claim 5, wherein: A dust reduction mechanism for dust reduction around the drilling is provided on the drilling platform body (1). The dust reduction mechanism includes a water storage tank (19) for storing water source fixedly connected to the drilling platform body (1). On both sides of the two cylindrical shells (7) near the bottom end at symmetric positions, water inlet pipes (20) and drain pipes (21) are both penetrated and fixedly connected. The bottom ends of the water inlet pipes (20) on both sides penetrate to the inner wall of the water storage tank (19) and are fixedly connected. A fixing ring (22) is fixedly connected to the bottom of the drilling platform body (1). Atomizing nozzles (23) for atomizing and spraying water source to the drilling position are both penetrated and fixedly connected at symmetric positions on both sides of the fixing ring (22). The bottom ends of the drain pipes (21) on both sides penetrate to the inner wall of the adjacent atomizing nozzle (23) and are fixedly connected respectively.

7. A drilling platform for highway bridge construction according to claim 6, characterized in that: Piston plates (25) for extracting and discharging the water source inside the water storage tank (19) are connected to the inner walls of the two cylindrical shells (7) in a lifting and moving manner. Pulling rods (24) are fixedly connected to both piston plates (25). The ends of the two pulling rods (24) far away from the piston plates (25) are fixedly connected to the support plate (10). One-way liquid inlet valves (201) and one-way liquid discharge valves (211) are fixedly connected to the inner walls of the water inlet pipes (20) and the drain pipes (21) on each side near the cylindrical shell (7).

8. A drilling platform for highway bridge construction according to claim 7, characterized in that: A third gear (26) is rotatably connected to the bottom end of the fixing ring (22). A plurality of earth pushing plates (27) for transporting the crushed soil around the drilling are fixedly connected to the bottom of the third gear (26), and the earth pushing plates (27) are evenly arranged on the third gear (26). A fourth gear (28) for driving the first pulley (16) to rotate is coaxially fixedly connected to the bottom end of the threaded rod (14), and the teeth of the fourth gear (28) are meshed with the teeth on the third gear (26).

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