Highway engineering bridge cast-in-situ bored pile device

Abstract

The utility model relates to the technical field of cast-in-situ bored pile devices, in particular to a highway engineering bridge cast-in-situ bored pile device which comprises a drilling cylinder, a pile drilling mechanism is arranged in the drilling cylinder and comprises a hole drilling motor fixedly connected to the top end of the drilling cylinder, and the output end of the hole drilling motor is fixedly connected with a liquid drainage screw rod. A main drill bit is fixedly connected to the bottom end of the liquid discharging spiral rod and rotationally connected to the bottom of the drilling barrel, a plurality of slurry inlet spiral grooves are formed in the outer side wall of the main drill bit and communicate with the drilling barrel, two liquid outlets are formed in the surface of the drilling barrel, and a coil is arranged in the drilling barrel. The damping characteristic can be adjusted in real time through the cooperation of the drilling barrel and the pile drilling mechanism and the cooperation of the magnetorheological fluid and the coil, low-frequency impact of the main drill bit in a hard rock stratum is effectively restrained, the aluminum honeycomb buffer ring absorbs high-frequency vibration, and the drilling perpendicularity deviation is controlled through the combination of the drilling barrel and the pile drilling mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of bored pile devices, specifically to a bored pile device for highway engineering bridges. Background Technology

[0002] Highway bridges generally consist of several major parts, including roadbed, pavement, bridge, tunnel engineering, and traffic engineering facilities. During bridge construction, cast-in-place piles are used. These piles are constructed by drilling holes at the designed pile locations; the holes have a circular cross-section, a reinforcing cage is placed inside, and then concrete is poured in. Due to their advantages such as vibration-free construction, no soil displacement, low noise, and suitability for use in densely built-up urban areas, cast-in-place piles are widely used in construction. However, in practical applications, improvements are needed to facilitate the transportation of the drilling equipment used for cast-in-place piles.

[0003] A search revealed a patent document with publication number CN221609900U, which discloses a drilling device for cast-in-place piles used in bridge construction. This utility model discloses a drilling device for cast-in-place piles used in bridge construction, relating to the field of drilling equipment technology. It includes a tracked vehicle body with symmetrically arranged adjustment mechanisms at one end of the tracked vehicle body. A cast-in-place pile drilling mechanism is arranged between the adjustment mechanisms. One end of one adjustment mechanism is equipped with a control cabinet, and the other end with a toolbox. A fixing block is located in the middle of the other end of the tracked vehicle body. This utility model, by setting up adjustment mechanisms, achieves the adjustment of the overall height of the cast-in-place pile drilling device. Driven by an adjustment motor, it can drive the cast-in-place pile drilling mechanism to adjust by 90 degrees, enabling the device to be easily transported when encountering bridges or height restrictions, thereby improving the transportability of the cast-in-place pile drilling device.

[0004] When the above-mentioned technical solution is used, the drill rod is prone to high-frequency vibration and low-frequency oscillation in hard rock or complex strata, which leads to borehole deviation and abnormal wear of the drill bit.

[0005] Therefore, it is necessary to invent a drilling and grouting pile device for highway engineering bridges to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a drilling and grouting pile device for highway engineering bridges. By coordinating the drill barrel and the drilling pile mechanism, vibration reduction is achieved, thereby solving the problem in the prior art that the drill rod is prone to high-frequency vibration and low-frequency oscillation in hard rock or complex strata, which leads to borehole deviation and abnormal wear of the drill bit.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a drilling and grouting pile device for highway engineering bridges, comprising a drill cylinder, a pile drilling mechanism disposed inside the drill cylinder, the pile drilling mechanism including a drilling motor fixedly connected to the top of the drill cylinder, a draining spiral rod fixedly connected to the output end of the drilling motor, a main drill bit fixedly connected to the bottom end of the draining spiral rod and rotatably connected to the bottom of the drill cylinder, several sets of slurry inlet spiral grooves opened on the outer side wall of the main drill bit and the slurry inlet spiral grooves communicating with the drill cylinder, two sets of liquid outlets opened on the surface of the drill cylinder, a coil disposed inside the drill cylinder, an aluminum honeycomb buffer ring installed inside the drill cylinder, magnetorheological fluid disposed inside the drill cylinder and a drain valve installed on the outer side of the drill cylinder, the operation of the main drill bit suppressing the drilling machine starting impact through the cooperation of the magnetorheological fluid and the coil.

[0008] Preferably, the drill barrel has an outer annular groove inside and the coil is installed inside the outer annular groove. An inner annular groove is provided on the inner side of the outer annular groove and the magnetorheological fluid is located inside the inner annular groove. The space is provided by the cooperation of the inner annular groove and the outer annular groove.

[0009] Preferably, a connecting block is fixedly connected to the outer wall of the drill barrel, a buffer box is provided on the right side of the connecting block, and a lifting block is provided on the right side of the buffer box, which is responsible for secondary buffering.

[0010] Preferably, the lifting block has a lifting seat slidably connected inside, and a lifting motor is fixedly connected to the top of the lifting seat, which drives the movement of subsequent parts.

[0011] Preferably, the output end of the lifting motor is fixedly connected to a threaded rod, and the threaded rod is threadedly connected to the lifting block. The bottom end of the threaded rod is rotatably connected to a base, and the base is fixedly connected to the bottom end of the lifting seat. The rotation of the threaded rod drives the lifting block, buffer box, connecting block, and drill barrel to rise and fall sequentially.

[0012] Preferably, hook-shaped blocks are fixedly connected to the opposite ends of the connecting block and the lifting block. The hook-shaped blocks are located inside the buffer box and are used to achieve the connection.

[0013] Preferably, the inner sides of the two sets of hook-shaped blocks are fixedly connected to a first buffer block, and the first buffer block is fixedly connected to the inside of the buffer box. The gap between the hook-shaped blocks and the buffer box is filled with a second buffer block, and the second buffer block is fixedly connected to the inner side wall of the buffer box. Secondary vibration reduction is achieved through the cooperation of the second buffer block and the first buffer block.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] By coordinating the drill barrel and the drilling mechanism, the damping characteristics can be adjusted in real time using the combination of magnetorheological fluid and coils, effectively suppressing the low-frequency impact of the main drill bit in hard rock formations. Meanwhile, the aluminum honeycomb buffer ring absorbs high-frequency vibrations. The combination of the two controls the verticality deviation of the borehole. The linkage design of the discharge auger and the slurry inlet auger not only improves the mud discharge efficiency but also helps stabilize the drill bit through fluid reaction force. The first and second buffer blocks in the buffer box form a composite energy-dissipating structure, further attenuating medium-frequency vibrations. In addition, the nested layout of the outer and inner ring grooves optimizes the sealing performance of the magnetorheological fluid, and the discharge valve enables convenient maintenance. The overall structure can still adapt to complex geological conditions even without sensors. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the buffer block structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the drill barrel of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Drill barrel; 2. Drilling mechanism; 201. Drilling motor; 202. Fluid discharge auger; 203. Main drill bit; 204. Inlet auger groove; 205. Fluid outlet; 206. Inner ring groove; 207. Outer ring groove; 208. Magnetorheological fluid; 209. Coil; 210. Aluminum honeycomb buffer ring; 3. Connecting block; 4. Buffer box; 5. Lifting block; 6. Lifting seat; 7. Lifting motor; 8. Base; 9. First buffer block; 10. Second buffer block; 11. Hook-shaped block; 12. Threaded rod. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-5 The diagram shows a bored pile device for highway bridges, comprising a drill cylinder 1, a drilling mechanism 2 inside the drill cylinder 1, a drilling motor 201 fixedly connected to the top of the drill cylinder 1, a slurry discharge auger 202 fixedly connected to the output end of the drilling motor 201, a main drill bit 203 fixedly connected to the bottom end of the slurry discharge auger 202 and rotatably connected to the bottom of the drill cylinder 1, several sets of slurry inlet spiral grooves 204 opening on the outer wall of the main drill bit 203 and communicating with the drill cylinder 1, two sets of slurry outlets 205 opening on the surface of the drill cylinder 1, a coil 209 inside the drill cylinder 1, and an aluminum honeycomb buffer ring 21 installed inside the drill cylinder 1. 0. The drill barrel 1 is equipped with magnetorheological fluid 208 inside and a drain valve is installed on the outside of the drill barrel 1. The operation of the main drill bit 203 is suppressed by the cooperation of the magnetorheological fluid 208 and the coil 209. The drill barrel 1 has an outer ring groove 207 inside and the coil 209 is installed inside the outer ring groove 207. An inner ring groove 206 is provided on the inner side of the outer ring groove 207 and the magnetorheological fluid 208 is located inside the inner ring groove 206. The cooperation between the inner ring groove 206 and the outer ring groove 207 provides space. A connecting block 3 is fixedly connected to the outer wall of the drill barrel 1. A buffer box 4 is provided on the right side of the connecting block 3. A lifting block 5 is provided on the right side of the buffer box 4. The buffer box 4 is responsible for secondary buffering.

[0026] Refer to the instruction manual appendix Figure 1-5The lifting block 5 is internally slidably connected to a lifting seat 6. A lifting motor 7 is fixedly connected to the top of the lifting seat 6, which drives the movement of subsequent parts. A threaded rod 12 is fixedly connected to the output end of the lifting motor 7 and is threadedly connected to the lifting block 5. A base 8 is rotatably connected to the bottom end of the threaded rod 12 and is fixedly connected to the bottom end of the lifting seat 6. The rotation of the threaded rod 12 drives the lifting block 5, buffer box 4, connecting block 3, and drill barrel 1 to rise and fall sequentially. A hook-shaped block 11 is fixedly connected to the opposite end of the connecting block 3 and the lifting block 5. The hook-shaped block 11 is located inside the buffer box 4 and is used to achieve engagement. A first buffer block 9 is fixedly connected to the inner side of the two sets of hook-shaped blocks 11 and is fixedly connected to the inside of the buffer box 4. A second buffer block 10 is filled in the gap between the hook-shaped block 11 and the buffer box 4 and is fixedly connected to the inner side of the buffer box 4. The wall is subjected to secondary vibration reduction through the cooperation of the second buffer block 10 and the first buffer block 9. Through the cooperation of the drill barrel 1 and the drilling mechanism 2, the damping characteristics can be adjusted in real time by the cooperation of the magnetorheological fluid 208 and the coil 209, which effectively suppresses the low-frequency impact of the main drill bit 203 in hard rock formations. The aluminum honeycomb buffer ring 210 absorbs high-frequency vibration. The combination of the two controls the verticality deviation of the borehole. The linkage design of the discharge spiral rod 202 and the slurry inlet spiral groove 204 not only improves the mud discharge efficiency, but also helps stabilize the drill bit through the fluid reaction force. The first buffer block 9 and the second buffer block 10 in the buffer box 4 form a composite energy-consuming structure, which further attenuates the medium-frequency vibration. In addition, the nested layout of the outer ring groove 207 and the inner ring groove 206 optimizes the sealing performance of the magnetorheological fluid 208. With the help of the discharge valve, maintenance is convenient. The overall structure can still adapt to complex geological conditions even without sensors.

[0027] The working principle of this practical application is as follows:

[0028] Refer to the instruction manual appendix Figure 1-5 The drilling motor 201 drives the drainage auger 202 to rotate, which in turn drives the main drill bit 203 to cut the formation. Rock cuttings are discharged from the outlet 205 after entering the drill barrel 1 through the mud inlet auger 204. When the drill bit encounters hard rock or cavities, the resulting vibration is transmitted to the drill barrel 1 through the drainage auger 202. Low-frequency impacts are dissipated by the magnetorheological fluid 208. After the coil 209 is energized, a magnetic field is formed, which causes the viscosity of the magnetorheological fluid 208 to increase sharply, converting the vibration energy into heat energy. High-frequency vibrations are absorbed by the aluminum honeycomb buffer ring 210 through the plastic deformation of the cell wall.

[0029] Simultaneously, the lifting motor 7 adjusts the height of the drill barrel 1 via the threaded rod 12. During this process, the hook-shaped block 11 compresses the first buffer block 9 and the second buffer block 10, offsetting the lifting impact. The entire working process of the drill barrel 1 forms a three-stage vibration reduction chain of "electromagnetic damping - honeycomb energy absorption - mechanical buffering". The annular cavity design of the outer ring groove 207 and the inner ring groove 206 ensures the sealing reliability of the magnetorheological fluid 208 under rotating conditions, ultimately achieving dynamic stability in the drilling process.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drilling and grouting pile device for highway bridges, comprising a drill cylinder (1), characterized in that: The drill barrel (1) is equipped with a drilling mechanism (2). The drilling mechanism (2) includes a drilling motor (201) fixedly connected to the top of the drill barrel (1). The output end of the drilling motor (201) is fixedly connected to a drain screw rod (202). The bottom end of the drain screw rod (202) is fixedly connected to a main drill bit (203), and the main drill bit (203) is rotatably connected to the bottom of the drill barrel (1). The outer wall of the main drill bit (203) is provided with several sets of slurry inlet spiral grooves (204), and the slurry inlet spiral grooves (204) are connected to the drill barrel (1). The surface of the drill barrel (1) is provided with two sets of liquid outlets (205). The drill barrel (1) is equipped with a coil (209). The drill barrel (1) is equipped with an aluminum honeycomb buffer ring (210). The drill barrel (1) is equipped with magnetorheological fluid (208), and a drain valve is installed on the outside of the drill barrel (1).

2. The bored pile device for highway bridges according to claim 1, characterized in that: The drill barrel (1) has an outer ring groove (207) inside and a coil (209) is installed inside the outer ring groove (207). An inner ring groove (206) is provided on the inner side of the outer ring groove (207) and the magnetorheological fluid (208) is located inside the inner ring groove (206).

3. The bored pile device for highway bridges according to claim 1, characterized in that: A connecting block (3) is fixedly connected to the outer wall of the drill barrel (1), a buffer box (4) is provided on the right side of the connecting block (3), and a lifting block (5) is provided on the right side of the buffer box (4).

4. The bored pile device for highway bridges according to claim 3, characterized in that: The lifting block (5) is internally slidably connected to a lifting seat (6), and the top of the lifting seat (6) is fixedly connected to a lifting motor (7).

5. The bored pile device for highway bridges according to claim 4, characterized in that: The output end of the lifting motor (7) is fixedly connected to a threaded rod (12) and the threaded rod (12) is threadedly connected to the lifting block (5). The bottom end of the threaded rod (12) is rotatably connected to a base (8), and the base (8) is fixedly connected to the bottom end of the lifting seat (6).

6. The bored pile device for highway bridges according to claim 3, characterized in that: The connecting block (3) and the lifting block (5) are both fixedly connected to a hook block (11) at opposite ends, and the hook block (11) is located inside the buffer box (4).

7. The bored pile device for highway bridges according to claim 6, characterized in that: The inner sides of the two sets of hook-shaped blocks (11) are fixedly connected to a first buffer block (9), and the first buffer block (9) is fixedly connected to the inside of the buffer box (4). The gap between the hook-shaped blocks (11) and the buffer box (4) is filled with a second buffer block (10), and the second buffer block (10) is fixedly connected to the inner wall of the buffer box (4).

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