Square pile foundation impact drilling construction device and method in high groundwater level area
By using a combination of drilling and testing mechanisms in areas with high groundwater levels, the problems of hole collapse and sand inrush during the construction of square pile foundations were solved, achieving stable and efficient impact drilling and reducing construction difficulty.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG ROAD & BRIDGE CONSTR
- Filing Date
- 2026-04-02
- Publication Date
- 2026-06-12
AI Technical Summary
In areas with high groundwater levels, existing rotary drilling methods for constructing square pile foundations are prone to borehole collapse and sand inrush, increasing the difficulty of construction.
The system employs a combination of drilling mechanism, hoisting mechanism, and detection mechanism. The drilling mechanism is driven by a rope for impact drilling, and pressure detection devices monitor the tensile deformation of the rope in real time. A correction component prevents deflection and ensures the stability of the borehole wall.
It reduces borehole wall disturbance, improves construction stability and accuracy, reduces the risk of borehole collapse and sand inrush, and lowers construction difficulty.
Smart Images
Figure CN122190615A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of pile foundation construction technology, specifically relating to a percussion drilling construction device and method for square pile foundations in areas with high groundwater levels. Background Technology
[0002] In infrastructure construction such as highways, railways, and power transmission lines, pile foundation construction is used in areas with high groundwater levels to achieve stronger soil retaining and anti-slide capabilities. Specifically, a pit is excavated on the ground according to the required dimensions to serve as the foundation pit. Reinforcing steel bars are then placed inside the pit, followed by the pouring of reinforced concrete to enhance the bearing capacity of the foundation. Common pit shapes are circular and square. Compared to traditional circular pile foundations, square piles have a larger lateral friction area under the same cross-section and material conditions, thereby increasing the pile's lateral friction force and significantly increasing its lateral bearing capacity. In deep foundation pits and high slope projects, square piles exhibit significantly better mechanical properties than circular piles as anti-slide piles.
[0003] Currently, when drilling square pile foundations in areas with high groundwater levels, it is necessary to first excavate a circular foundation pit using a drill bit, and then use other equipment to shape it into a square hole. However, the rotary drilling method used in existing circular foundation pit construction operations involves significant disturbance during rotational cutting and hole enlargement, which can easily lead to hole collapse and sand inrush in soft strata with high groundwater levels, increasing the difficulty of the operation. Summary of the Invention
[0004] The purpose of this invention is to provide a simple and reasonably designed percussion drilling device and method for square pile foundations in high groundwater areas in order to solve the above-mentioned problems.
[0005] The present invention achieves the above objectives through the following technical solutions: In a first aspect, the present invention provides a percussion drilling device for square pile foundations in areas with high groundwater levels, comprising: The drilling mechanism has a rope connected to its input end, and a winch mechanism connected to the input end of the rope. The winch mechanism is used to drive the drilling mechanism to perform impact drilling on the pile foundation pit via the rope. The ropes are arranged in pairs. A detection mechanism is located above the drilling mechanism. The detection mechanism includes an upper baffle, a lower baffle, a traveling member, and a pressure detection device. The upper and lower baffles are fixedly arranged relative to each other. Each of the upper and lower baffles has a constraint groove. Paired ropes pass through the upper and lower baffles through the corresponding constraint grooves. The traveling member is arranged correspondingly to the rope and is clamped on the rope. The traveling member is located between the upper and lower baffles. A pressure detection device is located above the traveling member. When the drilling mechanism is lowered by the rope, the traveling member abuts against the lower baffle. When the drilling mechanism is retracted by the rope, the traveling member moves up to the pressure detection device and abuts against the upper baffle.
[0006] As a further optimization of the present invention, it also includes a traveling vehicle body, the front end of which is provided with a mast. In the working state, the mast is in a vertical state, and a guide seat is provided at the top of the mast. The rope is guided, lifted and lowered through the guide seat. The winch lifting mechanism is provided on the traveling vehicle body. The upper baffle and the lower baffle are respectively fixed to the mounting frame, and the mounting frame is fixedly installed on the mast.
[0007] As a further optimization of the present invention, the pressure detection element is a pressure sensor, and a top plate is provided at the lower end of the upper baffle, with the top plate corresponding to the pressure sensor.
[0008] As a further optimization of the present invention, the groove depth of the constraint groove gradually decreases from the outside to the inside along the extension direction of the constraint groove.
[0009] As a further optimization of the present invention, the drilling mechanism includes a drill bit, a guide rod, and a guide cylinder. The drill bit is installed at the lower end of the guide rod, and a connecting seat is installed at the upper end of the guide rod. The output ends of the paired ropes are fixedly connected to the connecting seat. The end of the guide rod away from the connecting seat passes through the guide cylinder and is slidably connected to the guide cylinder. A sheath is fixedly installed at the lower end of the guide cylinder, and the sheath is fixedly installed on the mast by a limiting seat.
[0010] As a further optimization of the present invention, the accompanying component includes a housing, a driving component, a bracket, and a waist drum wheel. The driving component is housed inside the housing. A driving plate is fixedly connected to the output end of the driving component. A bracket is fixedly mounted on the driving plate. A waist drum wheel is rotatably mounted on the bracket. The waist drum wheels are arranged in pairs. The driving component, the bracket, and the waist drum wheels are arranged correspondingly. The rope is located between the two waist drum wheels, and the waistline portion of the waist drum wheel rubs against the rope.
[0011] As a further optimization of the present invention, a correction component is provided between the housings of the two following components, the correction component being used to prevent the following components from deflecting with the rope.
[0012] As a further optimization of the present invention, the correction component includes a vertical plate, an embedded magnetic block, and a side magnetic block. The upper end of the vertical plate is fixedly connected to the upper baffle, and the lower end of the vertical plate is fixedly connected to the lower baffle. The vertical plate is located between two accompanying components. An embedded magnetic block is embedded in the vertical plate. A side magnetic block is fixedly arranged opposite the housing. The paired side magnetic blocks are symmetrically located on both sides of the vertical plate, and the side magnetic blocks and the embedded magnetic blocks have the same magnetism.
[0013] Secondly, the present invention also provides a method for impact drilling construction of square pile foundations in areas with high groundwater levels, applied to the aforementioned impact drilling construction device for square pile foundations in areas with high groundwater levels. The method includes the following steps: Connect the output end of the rope to the input end of the drilling mechanism, and let the rope pass through the constraint grooves of the upper baffle and the lower baffle in sequence, and clamp the follower on the rope between the upper baffle and the lower baffle; The hoisting mechanism drives the rope to be lowered, so that the impact drilling end of the drilling mechanism can perform impact drilling on the pile foundation pit. The follower moves down with the rope and abuts the lower baffle. At this time, the rope length below the follower is consistent. Next, the hoisting mechanism drives the rope to retract, and the follower moves upward with the rope, causing the pressure detection device to abut against the upper baffle. The contact time points of the two pressure detection devices with the upper baffle are compared, and the rope corresponding to the pressure detection device that abuts later undergoes tensile deformation compared to the rope corresponding to the pressure detection device that abuts earlier.
[0014] As a further optimization of the present invention, the accompanying component includes a housing, a driving component, a bracket, and a waist drum wheel, and the clamping steps of the accompanying component and the rope include: Align the housings so that the rope is positioned between the paired waist drum wheels; The drive unit drives the bracket, causing the waist drum wheel to move closer to the rope until the waistline of the waist drum wheel comes into contact with the rope.
[0015] The present invention has at least the following beneficial effects: The present invention provides a square pile foundation impact drilling construction device and method in areas with high groundwater levels. The device is equipped with a drilling mechanism, a winch lifting mechanism and a detection mechanism. The winch lifting mechanism drives the drilling mechanism to impact drill the pile foundation pit through ropes. The impact drilling method is up and down hammering, which causes little lateral disturbance to the hole wall and is less likely to loosen or collapse the hole wall. This facilitates the shape control of the hole wall and reduces the difficulty of operation. The detection mechanism includes an upper baffle, a lower baffle, a traveling member and a pressure detection member. The pressure detection member is set above the traveling member. By clamping the traveling member with the ropes between the upper baffle and the lower baffle, and comparing the timing of the contact points between the two pressure detection members and the upper baffle, it is possible to determine in time which rope has undergone tensile deformation and make timely replacement or pre-tightening adjustment. The accompanying component includes a housing, a drive unit, a bracket, and a waist drum wheel. The clamping between the accompanying component and the rope is achieved through the frictional contact between the waistline portion of the paired waist drum wheels and the rope. Even if the waist drum wheels are worn, the drive unit can be adjusted to ensure that the degree of frictional contact between the waistline portion of the waist drum wheels and the rope meets the clamping constraint force between the accompanying component and the rope. Furthermore, a correction assembly is set between the paired accompanying components. The correction assembly includes a vertical plate, an embedded magnetic block, and a side magnetic block. By setting the side magnetic block and the embedded magnetic block, the side magnetic block and the embedded magnetic block generate a repulsive force to reduce the synchronous torsional force of the accompanying components, thereby reducing the offset between the pressure sensor and the top plate and ensuring the pressure detection accuracy when the pressure sensor and the top plate come into contact. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the invention Figure 1 A schematic diagram of the front structure; Figure 3 This is a schematic diagram of the rope and detection mechanism of the present invention; Figure 4 This is the present invention. Figure 3 A schematic diagram of the front sectional structure; Figure 5 This is the invention Figure 3 A schematic diagram of the side structure; Figure 6 This is a cross-sectional structural schematic diagram of the accompanying component and rope of the present invention; Figure 7 This is the present invention. Figure 5 Enlarged view of the central structure; Figure 8 This is a top view schematic diagram of the paired accompanying components and ropes of the present invention.
[0017] In the image: 1. Vehicle body; 101. Mast; 2. Drilling mechanism; 21. Drill bit; 22. Sheath; 23. Limit seat; 24. Guide tube; 25. Guide rod; 26. Connecting seat; 3. Rope; 301. Guide seat; 302. Winch hoisting mechanism; 4. Detection mechanism; 41. Upper baffle; 42. Constraint groove; 43. Accompanying component; 431. Housing; 432. Driving component; 433. Driving plate; 434. Bracket; 435. Waist drum wheel; 44. Lower baffle; 45. Mounting bracket; 46. Top plate; 47. Pressure sensor; 48. Vertical plate; 49. Embedded magnetic block; 410. Side magnetic block. Detailed Implementation
[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0019] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the impact drilling construction device for square pile foundations in high groundwater areas provided by the present invention includes: The drilling mechanism 2 has a rope 3 connected to its input end, and a winch lifting mechanism 302 connected to its input end. The winch lifting mechanism 302 is used to drive the drilling mechanism 2 to perform impact drilling on the pile foundation pit through the rope 3. The impact drilling method is to hammer up and down, which causes little lateral disturbance to the hole wall and is less likely to loosen or collapse the hole wall. This makes it easier to control the shape of the foundation pit hole wall and reduces the difficulty of operation. The ropes 3 are set in pairs. The detection mechanism 4 is located above the drilling mechanism 2. The detection mechanism 4 includes an upper baffle 41, a lower baffle 44, a follower 43, and a pressure detection element. The upper baffle 41 and the lower baffle 44 are fixedly arranged relative to each other. The upper baffle 41 and the lower baffle 44 are respectively provided with constraint grooves 42. The paired ropes 3 pass through the upper baffle 41 and the lower baffle 44 through the corresponding constraint grooves 42. The follower 43 is arranged correspondingly to the ropes 3 and is clamped on the ropes 3. The follower 43 is located between the upper baffle 41 and the lower baffle 44. The pressure detection element is located above the follower 43. When the drilling mechanism 2 is lowered by the ropes 3, the follower 43 abuts against the lower baffle 44. When the drilling mechanism 2 is retracted by the ropes 3, the follower 43 moves up to the pressure detection element and abuts against the upper baffle 41.
[0021] It should be noted that the input ends of the paired ropes 3 are respectively connected to the hoisting mechanisms 302, that is, the two hoisting mechanisms 302 respectively wind up / lower their respective ropes 3, so that when one of the ropes 3 undergoes a tensile phase change, it can be reflected in time. For example, the hoisting mechanism 302 is a winch.
[0022] The winding / unwinding amount of rope 3 is the same through the two hoisting mechanisms 302. At this time, when rope 3 is lowered, the drilling mechanism 2 moves down to perform impact drilling on the pile foundation pit, causing the traveling member 43 to move down with rope 3 and abut against the lower baffle 44. Through the combing of rope 3 by the traveling member 43, the length of rope 3 below the traveling member 43 is made uniform. When rope 3 is wound up, the traveling member 43 moves up with rope 3. If rope 3 does not undergo tensile deformation, the two traveling members 43 move up with rope 3 and abut against the upper baffle 41 synchronously. If one of them undergoes tensile deformation, the taut rope 3 will lift the drilling mechanism 2 upward, causing the pressure detection element corresponding to the accompanying part 43 on the taut rope 3 to first abut against the upper baffle 41, while the pressure detection element corresponding to the accompanying part 43 on the rope 3 that has undergone tensile deformation will abut against the upper baffle 41 later. Therefore, by comparing the timing of the contact between the two pressure detection elements and the upper baffle 41, it is possible to determine in time which rope 3 has undergone tensile deformation and make timely replacement or adjustment of the pretension.
[0023] For example, see [link to relevant documentation]. Figure 1 and Figure 2 The impact drilling construction device also includes a traveling vehicle body 1, with a mast 101 installed at the front end of the traveling vehicle body 1, so as to... Figure 2 Taking the orientation shown as an example, the mast 101 is located at the left end of the traveling vehicle body 1. In the working state, the mast 101 is in a vertical state. The top of the mast 101 is provided with a guide seat 301. The rope 3 is guided, lifted and lowered through the guide seat 301. For example, the guide seat 301 includes a guide wheel. The rope 3 passes around the guide wheel for guidance. The winch lifting mechanism 302 is provided on the traveling vehicle body 1. The upper baffle 41 and the lower baffle 44 are respectively fixed to the mounting frame 45. The mounting frame 45 is fixedly installed on the mast 101.
[0024] For example, the pressure detection element is a pressure sensor 47, and a top plate 46 is provided at the lower end of the upper baffle 41. The top plate 46 is correspondingly arranged with the pressure sensor 47. Through the protrusions of the top plate 46 on the upper baffle 41, the top plate 46 fully compresses the pressure sensor 47 to ensure pressure transmission efficiency.
[0025] It should be noted that, as Figure 3 and Figure 4 As shown, along the extending direction of the constraint groove 42, the groove depth of the constraint groove 42 gradually decreases from the outside to the inside. Among them, with... Figure 4Taking orientation as an example, the extension direction of the constraint groove 42 is horizontal. At this time, the groove depth of the constraint groove 42 gradually decreases from left to right. That is, the upper edge of the constraint groove 42 adopts an inclined design with the left side higher than the right side. Taking the constraint groove 42 on the upper baffle 41 as an example, when the rope 3 moves vertically back and forth in the constraint groove 42, the support force generated by the inclined edge of the constraint groove 42 on the rope 3 can be decomposed into a vertically upward support component and a horizontally rightward guiding component. This guiding component makes the rope 3 always have a tendency to move towards the inside (right side) of the constraint groove 42, thereby realizing the automatic centering and reliable constraint of the rope 3 in the constraint groove 42, effectively preventing the rope 3 from coming out towards the left opening direction of the constraint groove 42, and improving the stability and safety of the device operation. Similarly, when the rope 3 moves vertically back and forth in the constraint groove 42 on the lower baffle 44, the supporting force generated by the inclined edge of the constraint groove 42 on the rope 3 can be decomposed into a vertically downward supporting component and a horizontally rightward guiding component. This guiding component makes the rope 3 always tend to move towards the inside (right side) of the constraint groove 42, thereby realizing the automatic centering and reliable constraint of the rope 3 in the constraint groove 42, effectively preventing the rope 3 from coming out towards the left opening of the constraint groove 42, and improving the stability and safety of the device operation.
[0026] For example, see [link to relevant documentation]. Figure 1 and Figure 2 The drilling mechanism 2 includes a drill bit 21, a guide rod 25, and a guide cylinder 24. The drill bit 21 is installed at the lower end of the guide rod 25, and a connecting seat 26 is installed at the upper end of the guide rod 25. The output ends of the paired ropes 3 are fixedly connected to the connecting seat 26. The end of the guide rod 25 away from the connecting seat 26 passes through the guide cylinder 24 and is slidably connected to the guide cylinder 24. A sheath 22 is fixedly installed at the lower end of the guide cylinder 24. The sheath 22 is fixedly installed on the mast 101 through a limiting seat 23. Under the traction of the rope 3 and the guiding constraint of the guide rod 25 and the guide cylinder 24, the vertical accuracy of the drill bit 21 during vertical impact drilling is ensured. The sheath 22 is used to store the drill bit 21 after drilling is completed, preventing the drill bit 21 from being bumped and damaged.
[0027] It should be noted that the impact amplitude varies depending on the material of the soil layer. For example, when starting to drill, a small stroke (500mm) is used to ensure accurate hole positioning and prevent tilting. The stroke is adjusted according to the geological conditions. For example, a high stroke (1000mm) is used when passing through dense soil layers, and a medium stroke (750mm) is used when passing through loose sand, gravel, or pebble soil layers. The reciprocating distance of rope 3 varies under different strokes. Therefore, with the help of the detection of the accompanying component 43, the difference in length between the two ropes 3 can be detected in time when rope 3 moves back and forth multiple times.
[0028] For example, see [link to relevant documentation]. Figure 6 The accompanying component 43 includes a housing 431, a drive component 432, a bracket 434, and a waist drum wheel 435. The drive component 432 is housed inside the housing 431. A drive plate 433 is fixedly connected to the output end of the drive component 432. The bracket 434 is fixedly mounted on the drive plate 433. The waist drum wheel 435 is rotatably mounted on the bracket 434. The waist drum wheels 435 are arranged in pairs. The drive component 432, the bracket 434, and the waist drum wheels 435 are arranged correspondingly. The rope 3 is located between the two waist drum wheels 435, and the waistline portion of the waist drum wheel 435 rubs against the rope 3. By adjusting the distance between the two waist drum wheels 435, the accompanying component 43 can be adapted to detect ropes 3 of different diameters. Moreover, even if the waist drum wheel 435 wears, it can be adjusted by the drive component 432 to ensure that the degree of friction between the waistline portion of the waist drum wheel 435 and the rope 3 meets the clamping constraint force between the accompanying component 43 and the rope 3.
[0029] For example, see [link to relevant documentation]. Figure 5 A correction component is provided between the housings 431 of the two follower components 43. The correction component is used to prevent the follower components 43 from deflecting with the rope 3.
[0030] For example, see [link to relevant documentation]. Figure 7 and Figure 8 The correction assembly includes a vertical plate 48, an embedded magnetic block 49, and a side magnetic block 410. The upper end of the vertical plate 48 is fixedly connected to the upper baffle 41, and the lower end of the vertical plate 48 is fixedly connected to the lower baffle 44. The vertical plate 48 is located between two accompanying components 43. The embedded magnetic block 49 is embedded in the vertical plate 48. The side magnetic block 410 is fixedly arranged opposite the housing 431. The paired side magnetic blocks 410 are symmetrically located on both sides of the vertical plate 48, and the side magnetic blocks 410 and the embedded magnetic blocks 49 have the same magnetism. When the rope 3 twists during the winding / lowering process, the rope 3 causes the accompanying component 43 to have a synchronous twisting tendency through the waist drum wheel 435. The side magnetic block 410 and the embedded magnetic block 49 are arranged to generate a repulsive force, thereby reducing the synchronous twisting force of the accompanying component 43. This reduces the offset between the pressure sensor 47 and the top plate 46, ensuring the pressure detection accuracy when the pressure sensor 47 and the top plate 46 are in contact. Moreover, this non-contact correction method has no mechanical wear and a low failure rate.
[0031] It should be noted that, as Figure 7 As shown, in order to prevent interference between the side magnetic blocks 410 corresponding to the two accompanying components 43, the side magnetic blocks 410 corresponding to the two accompanying components 43 are distributed vertically.
[0032] For example, the present invention also provides a method for impact drilling construction of square pile foundations in areas with high groundwater levels, applied to the aforementioned impact drilling construction device for square pile foundations in areas with high groundwater levels. The construction method includes the following steps: Connect the output end of the rope 3 to the input end of the drilling mechanism 2, and let the rope 3 pass through the constraint groove 42 of the upper baffle 41 and the lower baffle 44 in sequence, and clamp the follower 43 on the rope 3 between the upper baffle 41 and the lower baffle 44. The hoisting mechanism 302 drives the rope 3 to be lowered, so that the impact drilling end of the drilling mechanism 2 can perform impact drilling on the pile foundation pit. The follower 43 moves down with the rope 3 and abuts the lower baffle 44. At this time, the length of the rope 3 below the follower 43 is the same. Next, the hoisting mechanism 302 drives the rope 3 to retract, and the follower 43 moves upward with the rope 3, so that the pressure detection element abuts against the upper baffle 41. The contact time points of the two pressure detection elements with the upper baffle 41 are compared. The rope 3 corresponding to the pressure detection element that abuts later undergoes tensile deformation compared to the rope 3 corresponding to the pressure detection element that abuts earlier.
[0033] The accompanying component 43 includes a housing 431, a drive component 432, a bracket 434, and a waist drum wheel 435. The clamping steps of the accompanying component 43 and the rope 3 include: The housing 431 is aligned so that the rope 3 is positioned between the paired waist drum wheels 435; The drive component 432 drives the bracket 434, causing the waist drum wheel 435 to move closer to the rope 3, until the waistline of the waist drum wheel 435 rubs against the rope 3.
[0034] It should be noted that when using the square pile foundation impact drilling construction device in the high groundwater level area, the vehicle body 1 travels to the construction position. At this time, the mast 101 is in a vertical state. The output end of the rope 3 is connected to the upper end of the connecting seat 26, and the rope 3 passes through the constraint groove 42 of the upper baffle 41 and the lower baffle 44 in sequence. Then, the follower 43 is clamped on the rope 3 between the upper baffle 41 and the lower baffle 44, so that the rope 3 is located between the paired waist drum wheels 435. Next, the hoisting mechanism 302 drives the rope 3 to descend, causing the guide rod 25 to move downwards along the guide cylinder 24, enabling the drill bit 21 to perform impact drilling on the pile foundation pit. During drilling, the trailing member 43 moves downwards with the rope 3 and abuts against the lower baffle 44. The trailing member 43 straightens the rope 3, ensuring that the length of the rope 3 below the trailing member 43 is consistent. When the rope 3 is wound up, the trailing member 43 moves upwards with the rope 3. If the rope 3 does not undergo tensile deformation, the two trailing members 43 move upwards with the rope 3 and simultaneously abut against the upper baffle 41. If one of them undergoes tensile deformation, the taut rope 3 will lift the drilling mechanism 2 upward, causing the pressure sensor 47 corresponding to the follower part 43 on the taut rope 3 to first abut against the upper baffle 41, while the pressure sensor 47 corresponding to the follower part 43 on the rope 3 that has undergone tensile deformation will then abut against the upper baffle 41. Therefore, by comparing the timing of the contact between the two pressure sensors and the upper baffle 41, it is possible to determine in time which rope 3 has undergone tensile deformation and make timely replacement or adjustment of the pretension. The reciprocating motion of the rope 3, and the adjustment according to the size of the drilling impact stroke, result in a high degree of friction between the rope 3 and the waist drum wheel 435. Therefore, the wear on the waistline of the waist drum wheel 435 can be addressed by adjusting the distance between the waist drum wheel 435 and the rope 3 through the adjustment of the drive component 432, so that the friction between the waist drum wheel 435 and the rope 3 meets the clamping requirements.
[0035] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A percussion drilling device for square pile foundations in areas with high groundwater levels, characterized in that, include: The drilling mechanism (2) has a rope (3) connected to its input end and a winch lifting mechanism (302) connected to its input end. The winch lifting mechanism (302) is used to drive the drilling mechanism (2) to perform impact drilling on the pile foundation pit through the rope (3). The rope (3) is arranged in pairs. The detection mechanism (4) is located above the drilling mechanism (2). The detection mechanism (4) includes an upper baffle (41), a lower baffle (44), a traveling member (43), and a pressure detection member. The upper baffle (41) and the lower baffle (44) are fixedly arranged relative to each other. The upper baffle (41) and the lower baffle (44) are respectively provided with constraint grooves (42). The ropes (3) arranged in pairs pass through the upper baffle (41) and the lower baffle (44) through the corresponding constraint grooves (42). The traveling member ( 43) Corresponding to the rope (3), the follower (43) is clamped on the rope (3) and the follower (43) is set between the upper baffle (41) and the lower baffle (44). A pressure detection device is set above the follower (43). When the drilling mechanism (2) is lowered by the rope (3), the follower (43) abuts against the lower baffle (44). When the drilling mechanism (2) is pulled up by the rope (3), the follower (43) moves up to the pressure detection device abuts against the upper baffle (41).
2. The impact drilling device for square pile foundations in areas with high groundwater levels according to claim 1, characterized in that, It also includes a traveling vehicle body (1), with a mast (101) at the front end of the traveling vehicle body (1). In the working state, the mast (101) is in a vertical state, and a guide seat (301) is provided at the top of the mast (101). The rope (3) is guided, lifted and lowered through the guide seat (301). The winch lifting mechanism (302) is set on the traveling vehicle body (1). The upper baffle (41) and the lower baffle (44) are respectively fixed to the mounting frame (45), and the mounting frame (45) is fixedly installed on the mast (101).
3. The percussion drilling device for square pile foundations in areas with high groundwater levels according to claim 2, characterized in that, The pressure detection element is a pressure sensor (47), and a top plate (46) is provided at the lower end of the upper baffle (41), with the top plate (46) corresponding to the pressure sensor (47).
4. The impact drilling device for square pile foundations in areas with high groundwater levels according to claim 3, characterized in that, Along the extension direction of the constraint groove (42), the groove depth of the constraint groove (42) gradually decreases from the outside to the inside.
5. The percussion drilling device for square pile foundations in areas with high groundwater levels according to claim 3, characterized in that, The drilling mechanism (2) includes a drill bit (21), a guide rod (25), and a guide cylinder (24). The drill bit (21) is installed at the lower end of the guide rod (25), and a connecting seat (26) is installed at the upper end of the guide rod (25). The output ends of the paired ropes (3) are fixedly connected to the connecting seat (26). The end of the guide rod (25) away from the connecting seat (26) passes through the guide cylinder (24) and is slidably connected to the guide cylinder (24). A sheath (22) is fixedly installed at the lower end of the guide cylinder (24), and the sheath (22) is fixedly installed on the mast (101) through a limiting seat (23).
6. The percussion drilling device for square pile foundations in areas with high groundwater levels according to claim 5, characterized in that, The accompanying component (43) includes a housing (431), a drive component (432), a bracket (434), and a waist drum wheel (435). The drive component (432) is installed inside the housing (431). The output end of the drive component (432) is fixedly connected to a drive plate (433). The bracket (434) is fixedly installed on the drive plate (433). The waist drum wheel (435) is rotatably mounted on the bracket (434). The waist drum wheels (435) are arranged in pairs. The drive component (432), the bracket (434), and the waist drum wheels (435) are arranged correspondingly. The rope (3) is located between the two waist drum wheels (435), and the waistline part of the waist drum wheel (435) rubs against the rope (3).
7. The impact drilling device for square pile foundations in areas with high groundwater levels according to claim 6, characterized in that, A correction assembly is provided between the housings (431) of the two accompanying components (43) to prevent the accompanying components (43) from deflecting with the rope (3).
8. The percussion drilling device for square pile foundations in areas with high groundwater levels according to claim 7, characterized in that, The correction assembly includes a vertical plate (48), an embedded magnetic block (49), and a side magnetic block (410). The upper end of the vertical plate (48) is fixedly connected to the upper baffle (41), and the lower end of the vertical plate (48) is fixedly connected to the lower baffle (44). The vertical plate (48) is located between two accompanying components (43). An embedded magnetic block (49) is embedded on the vertical plate (48). A side magnetic block (410) is fixedly arranged opposite the housing (431). The paired side magnetic blocks (410) are symmetrically located on both sides of the vertical plate (48), and the side magnetic blocks (410) and the embedded magnetic blocks (49) have the same magnetism.
9. A method for impact drilling construction of square pile foundations in areas with high groundwater levels, characterized in that, The impact drilling construction device for square pile foundations in high groundwater areas, as described in any one of claims 1 to 8, comprises the following steps: Connect the output end of the rope (3) to the input end of the drilling mechanism (2), and make the rope (3) pass through the constraint groove (42) of the upper baffle (41) and the lower baffle (44) in sequence, and clamp the follower (43) on the rope (3) between the upper baffle (41) and the lower baffle (44); The hoisting mechanism (302) drives the rope (3) to be lowered, so that the impact drilling end of the drilling mechanism (2) impacts the pile foundation pit. The follower (43) moves down with the rope (3) and abuts the lower baffle (44). At this time, the length of the rope (3) below the follower (43) is consistent. Then, the hoisting mechanism (302) drives the rope (3) to move upward, and the follower (43) moves upward with the rope (3) so that the pressure detection device abuts against the upper baffle (41). The contact time points of the two pressure detection devices with the upper baffle (41) are compared. The rope (3) corresponding to the pressure detection device that abuts later undergoes tensile deformation compared to the rope (3) corresponding to the pressure detection device that abuts earlier.
10. The method for impact drilling construction of square pile foundations in areas with high groundwater levels according to claim 9, characterized in that, The accompanying component (43) includes a housing (431), a drive component (432), a bracket (434), and a waist drum wheel (435). The clamping steps of the accompanying component (43) and the rope (3) include: The housing (431) is aligned so that the rope (3) is positioned between the paired waist drum wheels (435); Drive the bracket (434) via the drive component (432) to move the waist drum wheel (435) toward the rope (3) until the waist part of the waist drum wheel (435) rubs against the rope (3).