Road bridge drilling and punching equipment

Abstract

The present application belongs to the technical field of bridge drilling, and particularly relates to a road bridge drilling and punching equipment, which comprises a vehicle body, a hydraulic supply device, a hydraulic lifting device and a power supply device arranged on the vehicle body, and a motor fixedly arranged on the top of a lifting seat arranged on the side wall of the hydraulic lifting device. The dynamic jacking of the positioning pipe by the stabilizing mechanism effectively solves the problem of the swinging of the drill pipe caused by the large length of the drill pipe, and improves the drilling precision. The drilling pressure detection mechanism can accurately identify hard rock and reduce the drilling speed and the feeding speed in linkage, reduces the drill bit wear and avoids the pipe sticking, and balances the safety and the efficiency. The drilling degree detection mechanism can monitor the drill bit wear and trigger an alarm, and the stabilizing mechanism is linked to enhance the jacking force to compensate for the loss of stability. The three mechanisms cooperate with each other, which significantly improves the automation level, the operation reliability and the adaptability to complex strata of the equipment, and guarantees the drilling quality and the construction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of bridge drilling technology, and in particular relates to a drilling and hole-making device for road bridges. Background Technology

[0002] In road and bridge engineering, bridge pile foundations need to be drilled to form deep holes for pouring concrete load-bearing structures. In roadbed treatment, it is necessary to drill holes to insert drainage pipes or grouting pipes to improve the stability of the foundation. Therefore, drilling equipment is an indispensable piece of equipment, such as the self-protecting municipal road and bridge drilling equipment disclosed in announcement number CN120193757A.

[0003] To meet the demands of deep-hole operations, existing drilling equipment often features excessively long drill rods, resulting in a large distance between the drill bit and the drive motor. This leads to insufficient rigidity and significant swaying of the drill rod, especially at high speeds. Such swaying causes the drill bit to deviate from its preset trajectory, ultimately resulting in a large deviation in the drilled hole diameter and affecting the fit of subsequent component installations. Furthermore, the drill bit frequently encounters hard rock hidden in the soil during drilling. If the equipment fails to adjust its parameters in time and continues operating at the original high drilling speed and large feed rate, it will exacerbate the wear and even breakage of the drill bit's cutting edge. This not only increases the frequency of consumable replacements and construction costs but may also cause work stoppages due to drill bit damage, delaying the project schedule.

[0004] Therefore, a drilling and hole-making device for road and bridge construction is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a drilling and hole-making device for roads and bridges.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a road and bridge drilling equipment, comprising a vehicle body and a hydraulic supply device, a hydraulic lifting device, and a power supply device mounted on the vehicle body, wherein a lifting seat is provided on the side wall of the hydraulic lifting device, and further comprising:

[0007] A motor is fixedly installed on the top of the lifting seat. The output end of the motor is fixedly provided with a first drill rod extending downward. The lower end of the first drill rod is provided with a second drill rod. The lower end of the second drill rod is fixedly provided with a drill bit. A drilling pressure detection mechanism is provided between the first drill rod and the second drill rod. A positioning tube is fixedly provided on the rod wall of the first drill rod. The second drill rod passes through the interior of the positioning tube.

[0008] A stabilizing mechanism is provided at the bottom of the side wall of the hydraulic lifting device. The wall of the positioning tube passes through the interior of the stabilizing mechanism, and the stabilizing mechanism is used to press the positioning tube tightly.

[0009] A drilling progress detection mechanism is disposed between the lifting base and the side wall of the hydraulic lifting device, and the drilling progress detection mechanism is used to detect the degree to which the drill bit has penetrated the soil;

[0010] The PLC controller is fixedly installed on the top of the power supply device. The hydraulic supply device, power supply device, motor, drilling pressure detection mechanism, stabilization mechanism and drilling degree detection mechanism are all electrically connected to the PLC controller.

[0011] Preferably, the drilling pressure detection mechanism includes a slot disposed at the lower end of the first drill rod, the upper end of the second drill rod is inserted into the slot, and a pressure sensor is fixedly disposed at the upper end of the second drill rod, and a spring is fixedly disposed between the pressure sensor and the slot.

[0012] Preferably, limiting strips are fixedly provided on both sides of the second drill rod wall, and limiting grooves that cooperate with the two limiting strips are provided on both sides of the slot.

[0013] Preferably, the stabilizing mechanism includes a hollow liquid guiding ring fixedly disposed on the side wall of the hydraulic lifting device. A first oil supply pipe is fixedly disposed between the side wall of the hollow liquid guiding ring and the hydraulic supply device. A hollow stabilizing ring is disposed below the hollow liquid guiding ring. The wall of the positioning pipe passes through the interior of the hollow liquid guiding ring and the interior of the hollow stabilizing ring. A plurality of evenly distributed liquid guiding pipes are fixedly disposed around the hollow liquid guiding ring and the hollow stabilizing ring. Electromagnetic flow valves are fixedly disposed on the walls of the plurality of liquid guiding pipes. A plurality of evenly distributed hydraulic telescopic rods are fixedly disposed inside the hollow stabilizing ring. The plurality of liquid guiding pipes are respectively connected to the plurality of hydraulic telescopic rods. A stabilizing ball is fixedly disposed at one end of the plurality of hydraulic telescopic rods. The plurality of stabilizing balls extend into the interior of the hollow stabilizing ring and are in contact with the wall of the positioning pipe.

[0014] Preferably, the hydraulic telescopic rod includes a piston cylinder fixedly disposed on the inner side wall of the hollow stabilizing ring, a piston plate is slidably sealed inside the piston cylinder, a piston rod extending to the outside of the piston cylinder is fixedly disposed on one side of the piston plate, and one end of the piston rod extending outward is fixedly connected to the side wall of the stabilizing ball.

[0015] Preferably, all of the liquid guiding tubes are L-shaped tubes, and all of the liquid guiding tubes are high-strength alloy steel tubes.

[0016] Preferably, the drilling progress detection mechanism includes a mounting block fixedly installed on the side wall of the lifting seat, an infrared sensor fixedly installed on the side wall of the mounting block, and a plurality of evenly distributed reflectors fixedly installed on the side wall of the hydraulic lifting device along the vertical direction, with the position of the infrared sensor corresponding to the position of the reflector.

[0017] Preferably, the hydraulic lifting device is a hydraulic cylinder, and the moving end of the hydraulic cylinder is fixedly connected to the side wall of the lifting seat. A second oil supply pipe is fixedly provided between the hydraulic lifting device and the hydraulic supply device.

[0018] Compared with existing technologies, the advantages of this invention are as follows:

[0019] 1. This invention, through its stabilizing mechanism, applies a large clamping force to the positioning tube via multiple stabilizing balls during the initial drilling stage, counteracting the swaying caused by excessive exposure of the first and second drill rods. As drilling deepens, the clamping force gradually decreases with increasing soil constraint, preventing damage to the first and second drill rods due to excessive constraint. This dynamic adjustment not only enhances the rotational stability of the first and second drill rods and effectively solves the problem of significant swaying caused by excessive distance between the drill bit and the motor, but also ensures that the drill bit always drills along a preset trajectory, significantly improving the borehole diameter accuracy and providing a guarantee for the fit of subsequent component installation.

[0020] 2. This invention, through its drilling pressure detection mechanism, allows the pressure sensor to capture the rapid changes in reaction force in real time when the drill bit contacts hard rock. This triggers a synchronous reduction in drilling speed and feed rate via a PLC controller. Simultaneously, it increases the amount of hydraulic oil supplied to the stabilizing mechanism, thereby increasing the radial clamping force of the stabilizing ball on the positioning tube. This enhances the stability of the first and second drill rods during rotation, reducing chipping and wear of the drill bit cutting edge caused by rigid impact, extending the drill bit's service life, and improving drilling accuracy.

[0021] 3. The present invention, through the drilling progress detection mechanism, the infrared sensor and the reflector work together to monitor the drilling speed change in real time. When the drill bit speed decreases due to wear, it can not only remind the replacement through the alarm module, but also trigger the stabilizing mechanism to increase the clamping force to counteract the additional vibration, improve the stability of the borehole and reduce wear. Attached Figure Description

[0022] Figure 1 This is a first-view perspective perspective of a road and bridge drilling and hole-making device provided by the present invention;

[0023] Figure 2 This is a second-view perspective perspective of a road and bridge drilling and hole-making device provided by the present invention;

[0024] Figure 3 This is a perspective view of the connection between the lifting seat, motor, first drill rod, second drill rod and drill bit in a road and bridge drilling equipment provided by the present invention.

[0025] Figure 4 This is a cross-sectional perspective view of the connection between the first drill rod and the second drill rod in a road and bridge drilling and hole-making device provided by the present invention.

[0026] Figure 5 This is a perspective view of a stabilization mechanism for a road and bridge drilling equipment provided by the present invention;

[0027] Figure 6 This is a three-dimensional view of the hollow stabilizing ring after being cut open in the stabilizing mechanism of a road and bridge drilling equipment provided by the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the hydraulic lifting device and the drilling progress detection mechanism in a road and bridge drilling equipment provided by the present invention.

[0029] In the diagram: 1. Vehicle body; 2. Hydraulic supply device; 3. Hydraulic lifting device; 4. Power supply device; 5. Lifting seat; 6. Motor; 7. First drill rod; 8. Second drill rod; 9. Drill bit; 10. Drilling pressure detection mechanism; 101. Slot; 102. Pressure sensor; 103. Spring; 104. Limiting strip; 105. Limiting groove; 11. Positioning tube; 12. Stabilizing mechanism; 121. Hollow guide ring; 122. First oil supply pipe; 123. Hollow stabilizing ring; 124. Guide pipe; 125. Electromagnetic flow valve; 126. Hydraulic telescopic rod; 127. Stabilizing ball; 13. Drilling degree detection mechanism; 131. Mounting block; 132. Infrared sensor; 133. Reflector; 14. PLC controller; 15. Piston cylinder; 16. Piston plate; 17. Piston rod; 18. Second oil supply pipe. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] like Figures 1-7 The road and bridge drilling equipment shown includes a vehicle body 1 and a hydraulic supply device 2, a hydraulic lifting device 3, and a power supply device 4 mounted on the vehicle body 1. The hydraulic lifting device 3 has a lifting seat 5 on its side wall. The hydraulic lifting device 3 is a hydraulic cylinder, and the moving end of the hydraulic cylinder is fixedly connected to the side wall of the lifting seat 5. A second oil supply pipe 18 is fixedly provided between the hydraulic lifting device 3 and the hydraulic supply device 2. The hydraulic supply device 2 supplies hydraulic oil to the hydraulic lifting device 3 through the second oil supply pipe 18, causing the moving end of the hydraulic lifting device 3 to move the lifting seat 5 upwards or downwards. The equipment also includes:

[0032] A motor 6 is fixedly mounted on the top of the lifting base 5. A first drill rod 7 extending downwards is fixedly mounted at the output end of the motor 6. A second drill rod 8 is mounted at the lower end of the first drill rod 7, and a drill bit 9 is fixedly mounted at the lower end of the second drill rod 8. The operation of the motor 6 can drive the first drill rod 7, the second drill rod 8, and the drill bit 9 to rotate synchronously. A drilling pressure detection mechanism 10 is provided between the first drill rod 7 and the second drill rod 8. A positioning tube 11 is fixedly mounted on the wall of the first drill rod 7, and the second drill rod 8 passes through the interior of the positioning tube 11. The drilling pressure detection mechanism 10 includes a slot 101 located at the lower end of the first drill rod 7. The upper end of the second drill rod 8 is inserted into the slot 101, and a pressure sensor 102 is fixedly mounted on the upper end of the second drill rod 8. A spring 103 (with an elastic coefficient of 500-1500 N / mm, ensuring the spring 103's stability) is fixed between the pressure sensor 102 and the slot 101. 3. Under significant external force, a noticeable compression is generated, ensuring that the pressure sensor 102 can accurately capture the signal of impact from hard rock, while avoiding overload damage to the spring 103 or pressure sensor 102 due to excessive rigidity. The first drill rod 7 and the second drill rod 8 are movable. During movement, the pressure sensor 102 can detect the magnitude of the squeezing force between them, thereby determining the squeezing force of the drill bit 9 drilling. Limiting strips 104 are fixedly provided on both sides of the rod wall of the second drill rod 8. Limiting grooves 105 that cooperate with the two limiting strips 104 are opened on both sides of the slot 101. The cooperation between the limiting strips 104 and the limiting grooves 105 can lock and limit the second drill rod 8 to the slot 101, preventing the first drill rod 7 and the second drill rod 8 from rotating relative to each other. Since the first drill rod 7 is fixedly connected to the positioning tube 11, it ensures that the second drill rod 8 and the positioning tube 11 rotate synchronously.

[0033] A stabilizing mechanism 12 is disposed at the bottom of the side wall of the hydraulic lifting device 3. The wall of the positioning tube 11 passes through the interior of the stabilizing mechanism 12, and the stabilizing mechanism 12 is used to press the positioning tube 11 against the wall. The stabilizing mechanism 12 includes a hollow liquid guiding ring 121 fixedly disposed on the side wall of the hydraulic lifting device 3. A first oil supply pipe 122 is fixedly disposed between the side wall of the hollow liquid guiding ring 121 and the hydraulic supply device 2. A hollow stabilizing ring 123 is disposed below the hollow liquid guiding ring 121. The wall of the positioning tube 11 passes through the interior of the hollow liquid guiding ring 121 and the interior of the hollow stabilizing ring 123. A plurality of evenly distributed liquid guiding pipes are fixedly disposed around the hollow liquid guiding ring 121 and the hollow stabilizing ring 123. The tube 124, including multiple liquid guide tubes 124, is an L-shaped tube made of high-strength alloy steel. The high strength of the high-strength alloy steel allows for a secure connection between the hollow liquid guide ring 121 and the hollow stabilizing ring 123. Electromagnetic flow valves 125 are fixedly installed on the walls of each liquid guide tube 124. Multiple evenly distributed hydraulic telescopic rods 126 are fixedly installed inside the hollow stabilizing ring 123. Each liquid guide tube 124 is connected to one of the hydraulic telescopic rods 126. A stabilizing ball 127 is fixedly installed at one end of each hydraulic telescopic rod 126. The stabilizing ball 127 extends into the interior of the hollow stabilizing ring 123 and connects with the tube of the positioning tube 11. The wall contact setting, the stabilizing ball 127 and the positioning tube 11 are both made of high-strength wear-resistant alloy material, such as chromium-molybdenum alloy steel, and their surface is carburized and quenched, which can significantly improve the wear resistance. At the same time, it is necessary to regularly add lubricating oil to the contact parts of the stabilizing ball 127 and the positioning tube 11 to reduce the contact wear and avoid uneven distribution of clamping force due to local wear, which to a certain extent reduces the shaking degree of the first drill rod 7 and the second drill rod 8; the hydraulic telescopic rod 126 includes a piston cylinder 15 fixedly set on the inner wall of the hollow stabilizing ring 123, and a piston plate 16 is slidably sealed inside the piston cylinder 15. One side of the piston plate 16 is fixedly provided with an extension to the piston cylinder 15. The external piston rod 17 has one end extending outward and is fixedly connected to the side wall of the stabilizing ball 127. The hydraulic supply device 2 injects hydraulic oil into the hollow stabilizing ring 123 through the first oil supply pipe 122. After the hydraulic oil forms pressure in the hollow stabilizing ring 123, it is simultaneously diverted to multiple guide pipes 124 and finally flows into the corresponding piston cylinder 15, pushing the piston plate 16 inside the piston cylinder 15 to move axially, thereby driving the piston rod 17 and the stabilizing ball 127 at the end to extend until the ball walls of all the stabilizing balls 127 abut against the outer wall of the positioning tube 11, increasing the rotational stability of the positioning tube 11, thereby improving the rotational stability of the first drill rod 7 and the second drill rod 8.

[0034] The drilling depth detection mechanism 13 is located between the side wall of the lifting base 5 and the hydraulic lifting device 3. The drilling depth detection mechanism 13 is used to detect the degree of drilling of the drill bit 9 into the soil. The drilling depth detection mechanism 13 includes a mounting block 131 fixedly installed on the side wall of the lifting base 5. An infrared sensor 132 is fixedly installed on the side wall of the mounting block 131. Multiple evenly distributed reflectors 133 (the spacing between the multiple reflectors 133 is 50-100mm) are fixedly installed on the side wall of the hydraulic lifting device 3 in the vertical direction. The position of the infrared sensor 132 corresponds to the position of the reflector 133. When the infrared sensor 132 is aligned with the reflector 133, the infrared beam emitted by the emitting end of the infrared sensor 132 is reflected back to the receiving end by the reflector 133. At this time, the infrared sensor 132 will generate a trigger signal.

[0035] The PLC controller 14 is fixedly installed on the top of the power supply device 4. The hydraulic supply device 2, the power supply device 4, the motor 6, the drilling pressure detection mechanism 10, the stabilizing mechanism 12, and the drilling degree detection mechanism 13 are all electrically connected to the PLC controller 14.

[0036] The operating principle of the present invention is described as follows: The operator first pushes the vehicle body 1, aligns the drill bit 9 with the pre-marked drilling position, and connects the power supply of the equipment after positioning. The operator starts the hydraulic supply device 2 and the motor 6 by operating the PLC controller 14. At this time, the hydraulic supply device 2 supplies hydraulic oil to the hydraulic lifting device 3 through the second oil supply pipe 18, driving the hydraulic lifting device 3 to drive the lifting seat 5 to move down smoothly. At the same time, the motor 6 drives the first drill rod 7, the second drill rod 8, the positioning pipe 11 and the drill bit 9 to rotate synchronously. Under the downward thrust of the lifting seat 5, the drill bit 9 gradually cuts into the soil and begins the drilling operation.

[0037] During the drilling process, the operator further activates the hydraulic supply device 2 through the PLC controller 14, which injects hydraulic oil into the hollow stabilizing ring 123 through the first oil supply pipe 122. After the hydraulic oil forms pressure in the hollow stabilizing ring 123, it is simultaneously diverted to multiple guide pipes 124 and finally flows into the corresponding piston cylinder 15, pushing the piston plate 16 inside the piston cylinder 15 to move axially, thereby driving the piston rod 17 and the stabilizing balls 127 at the end to extend until the ball walls of all the stabilizing balls 127 abut against the outer wall of the positioning tube 11. At this time, multiple stabilizing balls 127 apply a uniform clamping force to the positioning tube 11 from the circumferential direction, effectively enhancing the stability of the first drill rod 7 and the second drill rod 8 when rotating, avoiding the large swaying phenomenon caused by the excessive distance between the drill bit 9 and the motor 6, and significantly improving the drilling accuracy. The stabilizing balls 127 not only play a stabilizing role for the positioning tube 11, but also the balls of the stabilizing balls 127 can roll without hindering the rotation and downward movement of the positioning tube 11.

[0038] In the initial stage of drilling, due to the relatively long exposed portions of the first drill rod 7, the second drill rod 8, and the positioning tube 11, the shallow soil provides weak constraint. The first drill rod 7 and the second drill rod 8 are prone to significant swaying due to their own length and the impact of the drill bit 9. At this time, the stabilizing mechanism 12 needs to apply a large clamping force through the stabilizing ball 127 to counteract the swaying. As the drilling depth increases, the distance between the first drill rod 7, the second drill rod 8, and the positioning tube 11 and the soil increases. The soil forms a "natural support" through friction and lateral extrusion, which gradually strengthens the constraint on the first drill rod 7, the second drill rod 8, and the positioning tube 11, resulting in a significant reduction in the swaying amplitude of the drill bit 9. The clamping force required by the stabilizing mechanism 12 also decreases accordingly.

[0039] Simultaneously, as the lifting platform 5 descends, it synchronously moves the infrared sensor 132 on one side downwards. When the infrared sensor 132 aligns with the uppermost reflector 133, the infrared beam emitted by the transmitter of the infrared sensor 132 is reflected back to the receiver by the reflector 133, triggering the infrared sensor 132 to send an electrical signal to the PLC controller 14. After receiving the signal, the PLC controller 14 increases the oil supply from the hydraulic supply device 2 to the stabilizing mechanism 12 by adjusting the electromagnetic flow valve 125, thereby increasing the clamping force of the stabilizing ball 127 on the positioning tube 11, enhancing the initial stability of the drill bit 9. As the infrared sensor 132 continues to descend, it aligns with each of the reflectors 133 below and triggers a signal. The PLC controller 14 then gradually reduces the oil supply through the electromagnetic flow valve 125, so that the clamping force decreases synchronously as the soil constraint increases. This avoids excessive constraint and maintains drilling accuracy, ensuring efficient completion of the drilling operation. (During this process, the oil supply of the hydraulic supply device 2 is range-based. The oil supply is reduced each time the infrared sensor 132 passes a reflector 133, and this oil supply is within a range, which can avoid fatigue damage to the stabilizing mechanism 12 caused by large pressure fluctuations.)

[0040] During the drilling process of drill bit 9, if it encounters hard rock objects inside the soil, the hard rock will generate a strong reaction force on drill bit 9. This external force is transmitted to the second drill rod 8 through drill bit 9, pushing the second drill rod 8 and drill bit 9 upward as a whole. At this time, the upper end of the second drill rod 8 will squeeze the pressure sensor 102 upward, forcing the spring 103 inside the pressure sensor 102 to be compressed. The pressure value detected by the pressure sensor 102 will increase sharply. When the pressure value reaches the preset threshold (such as 30MPa) of PLC controller 14, PLC controller 14 will immediately activate the protection mechanism: on the one hand, control the hydraulic lifting device 3 to reduce the downward speed of the lifting seat 5, thereby reducing the drilling speed of drill bit 9. This can reduce the rigid impact frequency between drill bit 9 and hard rock, avoid the cutting edge from breaking due to excessive instantaneous force, and at the same time provide drill bit 9 with more time to complete the cutting of hard rock, reducing the risk of stuck drill bit.

[0041] On the other hand, the PLC controller 14 synchronously reduces the output power of the motor 6, reduces the rotation speed of the drill bit 9, reduces the friction intensity between the drill bit 9 and the hard rock per unit time, reduces the heat generated during the cutting process, avoids the degradation of the material properties of the drill bit 9 due to high temperature, and at the same time makes the cutting force more concentrated on the rock fracture point, improving the stability of hard rock drilling.

[0042] It should be emphasized that during the normal drilling phase when the drill bit 9 is not in contact with hard rock, there will be slight compression between the first drill rod 7 and the second drill rod 8 due to the conventional cutting reaction force, and the spring 103 will be compressed to a small degree. At this time, the pressure value of the pressure sensor 102 will always be stable within the preset threshold range (such as 5-15MPa). The PLC controller 14 will not trigger the deceleration command, and the drill bit 9 can maintain its original rotation speed and drilling speed for efficient operation. This ensures that the construction efficiency in soft soil or conventional strata is not affected. It can accurately protect the equipment when encountering hard rock and ensure the construction progress under normal working conditions, thus achieving a balance between safety and efficiency.

[0043] During normal drilling, the hydraulic lifting device 3 drives the drill bit 9 to descend at a constant speed according to preset parameters. At this time, the infrared sensor 132, which moves synchronously with the lifting seat 5, will pass through multiple reflectors 133 preset along the drilling path in sequence. When the drill bit 9 is in good condition and the drilling resistance is stable, the time taken for the infrared sensor 132 to go from passing through one reflector 133 to aligning with the next adjacent reflector 133 remains within a stable range (such as 2-3 seconds). This time is monitored and automatically recorded in real time by the built-in system of the PLC controller 14.

[0044] If drill bit 9 experiences edge wear and reduced cutting ability due to prolonged use, the frictional resistance with the soil or rock strata during drilling will significantly increase. This will passively slow down the downward speed of drill bit 9 driven by the hydraulic lifting device 3. At this time, the time it takes for infrared sensor 132 to pass between two adjacent reflectors 133 will significantly increase (far exceeding the normal stable range). By comparing the real-time monitoring time with the preset benchmark value, PLC controller 14 can accurately determine that the wear of drill bit 9 is significant and the cutting efficiency has decreased. Once this state is confirmed, the built-in alarm module of PLC controller 14 will be triggered immediately (e.g., issuing an audible and visual alarm signal) to promptly remind the staff to check the wear of drill bit 9 and replace it, thus avoiding decreased drilling accuracy, increased energy consumption, or drill jamming due to excessive wear of drill bit 9. In the event of a malfunction, the PLC controller 14 simultaneously sends an adjustment command to the hydraulic supply device 2, controlling it to increase the amount of hydraulic oil supplied to the stabilizing mechanism 12. After the hydraulic oil enters the hollow stabilizing ring 123 through the first oil supply pipe 122, it is diverted to each piston cylinder 15 and pushes the piston plate 16 to move, causing the stabilizing ball 127 to further press against the positioning tube 11, thereby increasing the radial pressing force of the stabilizing ball 127 against the positioning tube 11. This dynamic pressurization process can effectively counteract the additional vibration caused by the wear of the drill bit 9 and the increase in frictional resistance, further enhancing the stability of the first drill rod 7 and the second drill rod 8 during rotation, preventing the drill bit from swaying due to uneven force, and ensuring that the drill bit 9 always drills accurately along the preset trajectory, providing a reliable guarantee for the subsequent construction quality.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A road and bridge drilling equipment, comprising a vehicle body (1) and a hydraulic supply device (2), a hydraulic lifting device (3), and a power supply device (4) disposed on the vehicle body (1), wherein the hydraulic lifting device (3) has a lifting seat (5) disposed on its side wall, characterized in that, Also includes: A motor (6) is fixedly installed on the top of the lifting seat (5). The output end of the motor (6) is fixedly provided with a first drill rod (7) extending downward. The lower end of the first drill rod (7) is provided with a second drill rod (8). The lower end of the second drill rod (8) is fixedly provided with a drill bit (9). A drilling pressure detection mechanism (10) is provided between the first drill rod (7) and the second drill rod (8). A positioning tube (11) is fixedly provided on the rod wall of the first drill rod (7). The second drill rod (8) passes through the interior of the positioning tube (11). The drilling pressure detection mechanism (10) 10) Includes a slot (101) disposed at the lower end of the first drill rod (7), the upper end of the second drill rod (8) is inserted into the slot (101), and a pressure sensor (102) is fixedly disposed at the upper end of the second drill rod (8). A spring (103) is fixedly disposed between the pressure sensor (102) and the slot (101). Limiting strips (104) are fixedly disposed on both sides of the rod wall of the second drill rod (8). Limiting grooves (105) that cooperate with the two limiting strips (104) are opened on both sides of the slot (101). A stabilizing mechanism (12) is disposed at the bottom of the side wall of the hydraulic lifting device (3). The wall of the positioning tube (11) passes through the interior of the stabilizing mechanism (12), and the stabilizing mechanism (12) is used to press the positioning tube (11) against the wall. The stabilizing mechanism (12) includes a hollow liquid guide ring (121) fixedly disposed on the side wall of the hydraulic lifting device (3). A first oil supply pipe (122) is fixedly disposed between the side wall of the hollow liquid guide ring (121) and the hydraulic supply device (2). A hollow stabilizing ring (123) is disposed below the hollow liquid guide ring (121). The wall of the positioning tube (11) passes through the interior of the hollow liquid guide ring (121) and the interior of the hollow stabilizing ring (123). A plurality of evenly distributed liquid guide tubes (124) are fixedly disposed around the hollow liquid guide ring (121) and the hollow stabilizing ring (123). The walls of the plurality of liquid guide tubes (124) are all fixed. An electromagnetic flow valve (125) is fixedly provided. Multiple evenly distributed hydraulic telescopic rods (126) are fixedly provided inside the hollow stabilizing ring (123). Multiple liquid guide pipes (124) are respectively connected to multiple hydraulic telescopic rods (126). A stabilizing ball (127) is fixedly provided at one end of each of the multiple hydraulic telescopic rods (126). The multiple stabilizing balls (127) extend into the interior of the hollow stabilizing ring (123) and are in contact with the wall of the positioning tube (11). The hydraulic telescopic rod (126) includes a piston cylinder (15) fixedly provided on the inner side wall of the hollow stabilizing ring (123). A piston plate (16) is provided inside the piston cylinder (15) in a sealed sliding manner. A piston rod (17) extending to the outside of the piston cylinder (15) is fixedly provided on one side of the piston plate (16). The outwardly extended end of the piston rod (17) is fixedly connected to the side wall of the stabilizing ball (127). The drilling degree detection mechanism (13) is located between the lifting seat (5) and the side wall of the hydraulic lifting device (3), and the drilling degree detection mechanism (13) is used to detect the degree of drilling of the drill bit (9) into the soil; The PLC controller (14) is fixedly installed on the top of the power supply device (4). The hydraulic supply device (2), power supply device (4), motor (6), drilling pressure detection mechanism (10), stabilizing mechanism (12) and drilling degree detection mechanism (13) are all electrically connected to the PLC controller (14).

2. The road and bridge drilling equipment according to claim 1, characterized in that, All of the liquid guiding tubes (124) are L-shaped tubes, and all of the liquid guiding tubes (124) are high-strength alloy steel tubes.

3. The road and bridge drilling equipment according to claim 1, characterized in that, The drilling progress detection mechanism (13) includes a mounting block (131) fixedly installed on the side wall of the lifting seat (5). An infrared sensor (132) is fixedly installed on the side wall of the mounting block (131). A plurality of evenly distributed reflectors (133) are fixedly installed on the side wall of the hydraulic lifting device (3) along the vertical direction. The position of the infrared sensor (132) corresponds to the position of the reflector (133).

4. The road and bridge drilling equipment according to claim 1, characterized in that, The hydraulic lifting device (3) is a hydraulic cylinder, and the moving end of the hydraulic cylinder is fixedly connected to the side wall of the lifting seat (5). A second oil supply pipe (18) is fixedly provided between the hydraulic lifting device (3) and the hydraulic supply device (2).

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