Pile drilling device for bridge construction

Abstract

The utility model relates to a pile foundation drilling device for bridge construction, including the fixed frame, the top fixed joint of fixed frame has the mounting panel, be equipped with lifting mechanism on the mounting panel, be equipped with lifting seat on the fixed frame, the top fixed mounting of lifting seat has motor no. 2, the output of motor no. 2 is fixed with drill bit, the drill bit extends to the below of lifting seat, the both sides of fixed frame are fixed with cylinder, the output of two cylinder is fixed with arc piece no. 1 and arc piece no. 2 respectively, the utility model provides a pile foundation drilling device for bridge construction, through two cylinders drive arc piece no. 1 and arc piece no. 2 respectively stick, make arc piece no. 1 and arc piece no. 2 constitute a cylindrical container, and wrap the drill bit in it, through motor no. 2 cooperation clear scraping mechanism can realize the quick cleaning of the soil on the drill bit.

Description

Technical Field

[0001] This utility model belongs to the field of pile foundation drilling technology, specifically a pile foundation drilling device for bridge construction. Background Technology

[0002] Bridge pile foundation drilling equipment is a type of mechanical equipment specifically designed for the construction of pile holes in bridge foundations. Through targeted selection and technical optimization, it can meet the construction needs of all scenarios, from soft soil to hard rock, and from dry land to deep water, making it a core piece of equipment for bridge foundation engineering.

[0003] In existing technologies, when a drill bit is raised after completing a drilling operation, a large amount of dirt usually adheres to its surface. This requires workers to remove the dirt from the drill bit's surface before maintenance, which not only leads to low maintenance efficiency but also increases the workload of the workers.

[0004] Therefore, this utility model provides a pile foundation drilling device for bridge construction.

[0005] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve the problem that in existing technologies, when the drill bit is raised after completing the drilling operation, a large amount of soil usually adheres to the surface of the drill bit, which requires workers to remove the soil from the surface of the drill bit before maintenance. This not only leads to low maintenance efficiency but also increases the workload of workers. Therefore, this utility model proposes a pile foundation drilling device for bridge construction.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The pile foundation drilling device for bridge construction of this utility model includes a fixed frame, an installation plate fixedly connected to the top of the fixed frame, a lifting mechanism provided on the installation plate, a lifting seat provided on the fixed frame, a second motor fixedly installed on the top of the lifting seat, a drill bit fixedly connected to the output end of the second motor, the drill bit extending to the bottom of the lifting seat, cylinders fixedly installed on both sides of the fixed frame, and arc-shaped component one and arc-shaped component two respectively fixedly connected to the output ends of the two cylinders. Arc-shaped component one and arc-shaped component two are each composed of a semi-circular base plate and an arc-shaped plate. Arc-shaped component one and arc-shaped component two are combined to form a cylindrical container. A cleaning and scraping mechanism is provided on arc-shaped component two, and a waste discharge pipe is connected to the bottom of arc-shaped component one.

[0008] Preferably, the cleaning mechanism includes a support plate, a slider, a fixed rod, and a scraper. A vertical groove is formed on the inner wall of the second arc-shaped component. Support plates are fixedly connected to the top and bottom of the vertical groove. A support rod is fixedly connected between the two support plates. A slider is slidably connected to the support rod. A spring is fixedly connected between the slider and the upper support plate. A fixed rod is fixedly connected to the slider. A cleaning component is fixedly connected to the side of the fixed rod away from the slider. The cleaning component is adapted to the drill bit.

[0009] Preferably, the cleaning component consists of a scraper and a pressure strip, the drill bit is auger-shaped, the bottom of the scraper and the top of the pressure strip are both inclined surfaces, the bottom of the scraper is in contact with the top of the spiral blade of the drill bit, and the top of the scraper is in contact with the bottom of the spiral blade of the drill bit.

[0010] Preferably, a connecting rod is fixedly connected to the side of the scraper near the slider, and a metal mounting tube is fixedly connected to the end of the connecting rod away from the scraper. A water spray pipe is fixedly connected to one end of the metal mounting tube, and a water inlet pipe is fixedly connected to the other end of the metal mounting tube. The water inlet pipe is connected to a water supply device and is a flexible hose. Spray nozzles are evenly installed at the bottom of the water spray pipe, and a flow guide is fixedly connected to the bottom end of the spray nozzle. The flow guide is flat.

[0011] Preferably, the lifting mechanism includes a motor, a lead screw, and a lead sleeve. The motor is fixedly mounted on the top of the mounting plate. The output end of the motor is fixedly connected to the lead screw. The bottom end of the lead screw extends to the bottom of the mounting plate and is rotatably connected to the mounting plate. The lead screw is threadedly connected to the lead sleeve, which is fixedly connected to the lifting seat. Limit sleeves are fixedly connected to both sides of the lifting seat. Two limit rods are symmetrically fixed to the fixing frame, and the limit sleeves are slidably connected to the limit rods.

[0012] Preferably, guide sleeves are fixedly connected to both sides of the fixing frame, and guide rods are fixedly connected to the outer walls of the first and second arc-shaped parts, and the guide rods are slidably connected to the guide sleeves.

[0013] Preferably, slot 1 is provided on both sides of the arc plate of the arc-shaped component 1, and a rubber pad 1 is fixedly connected in the slot 1. Slot 2 is provided on the bottom plate of the arc-shaped component 1, and a rubber pad 2 is fixedly connected in the slot 2.

[0014] Preferably, both sides of the arc plate of the second arc-shaped component are fixedly connected to the first insertion block, the first insertion block being adapted to the first slot, and the bottom plate of the second arc-shaped component is provided with the second insertion block, the second insertion block being adapted to the second slot.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The pile foundation drilling device for bridge construction described in this utility model uses two cylinders to drive arc-shaped part one and arc-shaped part two to fit together, so that arc-shaped part one and arc-shaped part two form a cylindrical container and enclose the drill bit. The soil on the drill bit can be quickly cleaned by motor two in conjunction with the cleaning and scraping mechanism.

[0017] 2. The pile foundation drilling device for bridge construction described in this utility model uses a water spray pipe and a nozzle to further rinse the upper surface of the spiral blades of the drill bit after cleaning. The guide shroud at the bottom of the nozzle can expand the rinsing range and make up for the rinsing dead corners between adjacent nozzles.

[0018] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0019] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0020] In the accompanying drawings of the instruction manual:

[0021] Figure 1 This is a front view of the fixing frame of this utility model;

[0022] Figure 2 This is a rear view of the fixing bracket of this utility model;

[0023] Figure 3 This is a schematic diagram of the drill bit part of this utility model;

[0024] Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0025] Figure 5 This is an exploded view of one part of the arc-shaped component of this utility model;

[0026] Figure 6 This is an exploded view of two parts of the arc-shaped component of this utility model;

[0027] Figure 7 This is a cross-sectional view of the scraper section of this utility model.

[0028] The reference numerals used in the above figures are explained as follows:

[0029] 1. Fixing frame; 2. Mounting plate; 3. Motor 1; 4. Lead screw; 5. Sleeve; 6. Lifting seat; 7. Limiting rod; 8. Limiting sleeve; 9. Motor 2; 10. Drill bit; 11. Cylinder; 12. Guide sleeve; 13. Guide rod; 14. Arc-shaped component 1; 15. Arc-shaped component 2; 16. Slot 1; 17. Rubber pad 1; 18. Slot 2; 19. Rubber pad 2; 20. Insert block 1; 21. Insert block 2; 22. Vertical groove; 23. Support plate; 24. Support rod; 25. Slider; 26. Fixing rod; 27. Scraper; 28. Pressure strip; 29. ​​Connecting rod; 30. Water spray pipe; 31. Metal mounting pipe; 32. Nozzle; 33. Flow guide; 34. Water inlet pipe; 35. Spring; 36. Waste discharge pipe. Detailed Implementation

[0030] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0031] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0032] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0033] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0034] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0035] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0036] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0037] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0039] like Figures 1 to 7As shown, the present invention discloses a pile foundation drilling device for bridge construction, comprising a fixed frame 1, an mounting plate 2 fixedly connected to the top of the fixed frame 1, a lifting mechanism on the mounting plate 2, a lifting seat 6 on the fixed frame 1, a motor 9 fixedly mounted on the top of the lifting seat 6, a drill bit 10 fixedly connected to the output end of the motor 9, the drill bit 10 extending below the lifting seat 6, cylinders 11 fixedly mounted on both sides of the fixed frame 1, and arc-shaped component 14 and arc-shaped component 15 fixedly connected to the output ends of the two cylinders 11 respectively. Arc-shaped component 14 and arc-shaped component 15 are each composed of a semi-circular base plate and an arc-shaped plate. Arc-shaped component 14 and arc-shaped component 15, when combined, form a cylindrical container. Arc-shaped component 15 is provided with a cleaning mechanism, and the bottom of arc-shaped component 14 is connected to a waste discharge pipe 36. During operation, the lifting assembly drives... As the mounting base slides down, motor 29 is started, driving drill bit 10 to rotate for drilling. Once drill bit 10 has completed drilling, the lifting assembly raises drill bit 10, activating two cylinders 11. These cylinders then drive arc-shaped component 14 and arc-shaped component 2 15 to fit together, forming a cylindrical container that encloses drill bit 10. At this point, motor 29 is started again, and in conjunction with the cleaning mechanism, the dirt on drill bit 10 can be quickly cleaned. This solves the problem in the prior art where, after drill bit 10 completes drilling and is raised, its surface is usually covered with a large amount of dirt, requiring maintenance personnel to remove the dirt before maintenance. This not only leads to low maintenance efficiency but also increases the workload of the workers.

[0040] The cleaning mechanism includes a support plate 23, a slider 25, a fixing rod 26, and a scraper 27. A vertical groove 22 is provided on the inner wall of the arc-shaped part 15. The top and bottom of the vertical groove 22 are fixedly connected to the support plate 23. A support rod 24 is fixedly connected between the two support plates 23. A slider 25 is slidably connected to the support rod 24. A spring 35 is fixedly connected between the slider 25 and the upper support plate 23. A fixing rod 26 is fixedly connected to the slider 25. A cleaning component is fixedly connected to the side of the fixing rod 26 away from the slider 25. The cleaning component is adapted to the drill bit 10.

[0041] The cleaning component consists of a scraper 27 and a pressure strip 28. The drill bit 10 is auger-shaped. The bottom of the scraper 27 and the top of the pressure strip 28 are both inclined surfaces. The bottom of the scraper 27 is in contact with the top of the spiral blade of the drill bit 10, and the top of the scraper 27 is in contact with the bottom of the spiral blade of the drill bit 10. During operation, when the cylinder 11 drives the arc-shaped component 14 and the arc-shaped component 15 to merge, the scraper 27 and the pressure strip 28 are inserted exactly at the top of the spiral blade of the drill bit 10. After the motor 29 starts, the drill bit 10 rotates with the motor 29, and the pressure strip 28 is drilled. The lower surface of the spiral blade of drill bit 10 is pressed downward, causing slider 25 to slide downward along support rod 24. At the same time, scraper 27 slides along the upper surface of the spiral blade of drill bit 10, thus cleaning the soil on the upper surface of the spiral blade of drill bit 10 until slider 25 drives fixed rod 26 and scraper 27 to slide down to the bottom of support rod 24. During this process, spring 35 is stretched. When the cleaning operation of drill bit 10 is completed, cylinder 11 drives arc-shaped part 14 and arc-shaped part 25 to reset. At this time, slider 25 slides upward and resets under the pulling force of spring 35.

[0042] A connecting rod 29 is fixedly connected to the side of the scraper 27 near the slider 25. A metal mounting tube 31 is fixedly connected to the end of the connecting rod 29 away from the scraper 27. A water spray pipe 30 is fixedly connected to one end of the metal mounting tube 31, and a water inlet pipe 34 is fixedly connected to the other end of the metal mounting tube 31. The water inlet pipe 34 is connected to a water supply device and is a flexible hose. Spray nozzles 32 are evenly installed at the bottom of the spray pipe 30. A flow guide shroud 33 is fixedly connected to the bottom end of the spray nozzle 32. The flow guide shroud 33 is flat. During operation, the scraper 27 moves towards... During the scraping of the upper surface of the spiral blades of the drill bit 10, the water inlet pipe 34 supplies water to the metal mounting pipe 31 and the water spray pipe 30 through the external water supply equipment. The water flow is sprayed out from the nozzle 32 at the bottom of the water spray pipe 30, which further washes the upper surface of the spiral blades of the drill bit 10 after scraping. The flow guide shroud 33 at the bottom of the nozzle 32 can expand the washing range and make up for the washing dead corners between adjacent nozzles 32. The water flow washes the soil to the bottom of the arc-shaped part 14 and discharges it from the waste discharge pipe 36, which facilitates the centralized treatment of wastewater containing soil.

[0043] The lifting mechanism includes a motor 3, a lead screw 4, and a threaded sleeve 5. The motor 3 is fixedly mounted on the top of the mounting plate 2. The output end of the motor 3 is fixedly connected to the lead screw 4. The bottom end of the lead screw 4 extends to the bottom of the mounting plate 2 and is rotatably connected to the mounting plate 2. The threaded sleeve 5 is threadedly connected to the lead screw 4. The threaded sleeve 5 is fixedly connected to the lifting seat 6. Limit sleeves 8 are fixedly connected to both sides of the lifting seat 6. Two limit rods 7 are symmetrically fixed to the fixing frame 1. The limit sleeves 8 are slidably connected to the limit rods 7. During operation, when drilling, the motor 3 is started, which drives the lead screw 4 to rotate, causing the threaded sleeve 5 to move the lifting seat 6 downward along the limit rods 7. After drilling is completed, the motor 3 reverses, and the threaded sleeve 5 drives the lifting seat 6 to rise and reset.

[0044] Guide sleeves 12 are fixedly connected to both sides of the fixed frame 1, and guide rods 13 are fixedly connected to the outer walls of the first arc-shaped part 14 and the second arc-shaped part 15. The guide rods 13 are slidably connected to the guide sleeves 12. During operation, the sliding cooperation between the guide rods 13 and the guide sleeves 12 facilitates the sliding of the first arc-shaped part 14 and the second arc-shaped part 15, which plays an auxiliary guiding role.

[0045] The arc-shaped component 14 has slots 16 on both sides of its arc plate, and a rubber pad 17 is fixedly connected inside the slot 16. The bottom plate of the arc-shaped component 14 has a slot 2 18, and a rubber pad 2 19 is fixedly connected inside the slot 2 18.

[0046] Both sides of the arc-shaped plate of the second arc-shaped component 15 are fixedly connected with insert blocks 20, which are adapted to slots 16. Insert blocks 21 are provided on the bottom plate of the second arc-shaped component 15, which are adapted to slots 18. During operation, when the first arc-shaped component 14 and the second arc-shaped component 15 are combined, insert blocks 20 and 21 slide into slots 16 and 18 respectively. The sealing of the first arc-shaped component 14 and the second arc-shaped component 15 can be ensured by rubber pads 17 and 19.

[0047] Working principle: During drilling, motor 3 is started, which drives the lead screw 4 to rotate, causing the lead sleeve 5 to move the lifting seat 6 downward along the limit rod 7. After drilling is completed, motor 3 reverses, and the lead sleeve 5 drives the lifting seat 6 to rise and reset. Then, two cylinders 11 are started, which respectively drive the arc-shaped parts 14 and 15 to fit together, forming a cylindrical container that encloses the drill bit 10. At this time, the scraper 27 and pressure strip 28 are inserted at the top of the spiral blade of the drill bit 10. Motor 9 is started again, and the drill bit 10 rotates with motor 9. The pressure strip 28 is pressed downward by the lower surface of the spiral blade of the drill bit 10, causing the slider 25 to slide downward along the support rod 24. At the same time, the scraper 27 slides along the upper surface of the spiral blade of the drill bit 10, thus scraping the soil on the upper surface of the spiral blade of the drill bit 10 until the slider 25 drives the fixing rod 26 and the scraper 27. As the drill bit 10 slides down to the bottom of the support rod 24, the spring 35 is stretched. After the cleaning operation of the drill bit 10 is completed, the cylinder 11 drives the arc-shaped part 14 and the arc-shaped part 15 to reset. At this time, the slider 25 slides up and resets under the tension of the spring 35. During the process of the scraper 27 scraping the upper surface of the spiral blade of the drill bit 10 downward, the water inlet pipe 34 supplies water to the metal mounting pipe 31 and the water spray pipe 30 through the external water supply equipment. The water flows from the nozzle 3 at the bottom of the water spray pipe 30. 2. Spraying out to further rinse the upper surface of the spiral blades of the drill bit 10 after cleaning. The flow guide shroud 33 at the bottom of the nozzle 32 can expand the rinsing range and make up for the rinsing dead corners between adjacent nozzles 32. When the arc-shaped part 14 and the arc-shaped part 25 are combined, the insert block 10 and the insert block 21 slide into the slot 16 and the slot 28 respectively. The sealing of the arc-shaped part 14 and the arc-shaped part 25 can be ensured by the rubber pad 17 and the rubber pad 29.

[0048] In this embodiment, the power mechanism or power unit includes, but is not limited to, engines, motors, pneumatic tools, hydraulic pumps, etc. The power unit also includes direct power sources and indirect power sources. Direct power sources are those that can provide their own power, such as engines and motors, while indirect power sources include cylinders and hydraulic cylinders. The power mechanism or power unit can drive the linear reciprocating motion of the actuator through gear and rack engagement, slider and groove engagement, lead screw and nut engagement, etc.

[0049] In this embodiment, the transmission mechanism or transmission unit includes a speed reducer, gearbox, worm gear mechanism, linkage mechanism, compound mechanism, etc. The transmission mechanism or transmission unit is used to transmit power from the power mechanism or power unit to the actuator or actuator.

[0050] In this embodiment, the actuator or actuator unit includes, but is not limited to, compression mechanism, rotation mechanism, swing mechanism, vibration mechanism, lifting mechanism, cutting mechanism, etc.

[0051] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pile foundation drilling device for bridge construction, characterized in that, The device includes a fixed frame, a mounting plate fixed to the top of the fixed frame, a lifting mechanism on the mounting plate, a lifting seat on the fixed frame, a second motor fixedly mounted on the top of the lifting seat, a drill bit fixedly mounted at the output end of the second motor, the drill bit extending to the bottom of the lifting seat, cylinders fixedly mounted on both sides of the fixed frame, and arc-shaped component one and arc-shaped component two fixedly mounted at the output ends of the two cylinders respectively. Arc-shaped component one and arc-shaped component two are each composed of a semi-circular base plate and an arc-shaped plate. Arc-shaped component one and arc-shaped component two, when combined, form a cylindrical container. Arc-shaped component two is equipped with a scraping mechanism, and the bottom of arc-shaped component one is connected to a waste discharge pipe.

2. The pile foundation drilling device for bridge construction according to claim 1, characterized in that, The cleaning mechanism includes a support plate, a slider, a fixed rod, and a scraper. A vertical groove is formed on the inner wall of the second arc-shaped component. Support plates are fixed to the top and bottom of the vertical groove. A support rod is fixed between the two support plates. A slider is slidably connected to the support rod. A spring is fixed between the slider and the upper support plate. A fixed rod is fixed to the slider. A cleaning component is fixed to the side of the fixed rod away from the slider. The cleaning component is compatible with the drill bit.

3. The pile foundation drilling device for bridge construction according to claim 2, characterized in that, The cleaning component consists of a scraper and a pressure strip. The drill bit is auger-shaped. The bottom of the scraper and the top of the pressure strip are both inclined surfaces. The bottom of the scraper is in contact with the top of the spiral blade of the drill bit, and the top of the scraper is in contact with the bottom of the spiral blade of the drill bit.

4. The pile foundation drilling device for bridge construction according to claim 3, characterized in that, A connecting rod is fixed to the side of the scraper near the slider. A metal mounting tube is fixed to the end of the connecting rod away from the scraper. A water spray pipe is fixed to one end of the metal mounting tube, and a water inlet pipe is fixed to the other end of the metal mounting tube. The water inlet pipe is connected to a water supply device and is a flexible hose. Spray nozzles are evenly installed at the bottom of the water spray pipe, and a flow guide is fixed to the bottom end of the spray nozzle. The flow guide is flat.

5. A pile foundation drilling device for bridge construction according to claim 4, characterized in that, The lifting mechanism includes a motor, a lead screw, and a lead sleeve. The motor is fixedly mounted on the top of the mounting plate. The output end of the motor is fixedly connected to the lead screw. The bottom end of the lead screw extends to the bottom of the mounting plate and is rotatably connected to the mounting plate. The lead screw is threadedly connected to the lead sleeve, which is fixedly connected to the lifting seat. Limit sleeves are fixedly connected to both sides of the lifting seat. Two limit rods are symmetrically fixed to the fixing frame. The limit sleeves are slidably connected to the limit rods.

6. A pile foundation drilling device for bridge construction according to claim 5, characterized in that, Guide sleeves are fixedly connected to both sides of the fixing frame, and guide rods are fixedly connected to the outer walls of the first and second arc-shaped parts, and the guide rods are slidably connected to the guide sleeves.

7. A pile foundation drilling device for bridge construction according to claim 6, characterized in that, The arc-shaped component 1 has slots 1 on both sides of its arc-shaped plate, and a rubber pad 1 is fixedly connected inside the slot 1. The bottom plate of the arc-shaped component 1 has slot 2, and a rubber pad 2 is fixedly connected inside the slot 2.

8. A pile foundation drilling device for bridge construction according to claim 7, characterized in that, Both sides of the arc plate of the second arc-shaped component are fixedly connected with a first insert block, which is adapted to the first slot. The bottom plate of the second arc-shaped component is provided with a second insert block, which is adapted to the second slot.

Images