A hole positioning device and hole machine for pile foundation construction

Abstract

The present invention discloses a pile foundation construction hole positioning device and a hole-guiding machine in the field of pile foundation construction technology. The device comprises an upper measuring platform, on which an axis positioner and an angle detector are provided; a lower mounting base, which is arranged directly below the upper measuring platform; a positioning pin, the top of which is fixedly connected to the upper measuring platform, and a connecting hole is provided on the lower mounting base; a shock-absorbing return spring, the two ends of which are respectively fixedly connected to the upper measuring platform and the lower mounting base, and the axial dimension of the shock-absorbing return spring is larger than the axial dimension of the positioning pin; and an electromagnet, which is arranged on the upper measuring platform or the lower mounting base, and the upper measuring platform can move downward under the magnetic force of the electromagnet and is horizontally rigidly connected to the lower mounting base through the plug-in fit of the positioning pin and the connecting hole. The present invention can not only improve the positioning accuracy of the hole-guiding, but also reduce labor intensity and improve the construction efficiency of the hole-guiding.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation construction, and in particular to a hole-guiding and positioning device and a hole-guiding machine for pile foundation construction. Background Art

[0002] In recent years, with the increasing expansion of infrastructure construction and the continuous deepening of low-carbon new energy construction, photovoltaic power stations, as an important development direction of new energy, have been able to develop on a large scale.

[0003] The construction foundation of photovoltaic power stations is mainly based on prefabricated pipe piles. Traditional piling positioning requires that the center point of each prefabricated pipe pile be accurately measured and laid out (manually measured) according to the position on the design drawings and the on-site benchmark points, and the center point is marked with obvious signs (such as steel bar heads, chopsticks, etc.); when drilling holes for the pile foundation, it is usually determined by visual inspection that the drill bit center coincides with the mark. This method has the disadvantages of a large workload for measurement and layout, large positioning errors, low construction efficiency, and a low hole drilling qualification rate.

[0004] Patent publication CN218373853U discloses a hole positioning device for PHC pile construction. This device uses laser-assisted positioning to align the auger rod with a positioning point (i.e., a marker), improving the positioning accuracy of the hole. However, in actual production, because this device aligns the auger rod with the positioning point indirectly, it not only improves the positioning accuracy of the hole to a limited extent, but also suffers from high labor intensity and a long construction period.

[0005] In summary, how to improve the positioning accuracy of the guide hole and improve the construction efficiency has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide a hole-guiding positioning device for pile foundation construction, so as to solve the technical problems of low positioning accuracy and low construction efficiency in the existing hole-guiding positioning device.

[0007] The technology adopted by the present invention is as follows: a hole positioning device for pile foundation construction, comprising:

[0008] Go up to the measuring platform;

[0009] An axis locator, which is disposed on the upper measuring platform and is capable of locating the horizontal position of the rotation axis of the auger rod;

[0010] An angle detector is provided on the upper measuring platform and is capable of measuring the angle between the rotation axis of the auger rod and the horizontal plane;

[0011] A lower mounting base, wherein the lower mounting base is arranged directly below the upper measuring platform;

[0012] A positioning pin is provided between the upper measuring platform and the lower mounting base, the top end of the positioning pin is fixedly connected to the upper measuring platform, and the lower mounting base is provided with a connection hole that matches the positioning pin;

[0013] A shock-absorbing return spring, wherein the top end of the shock-absorbing return spring is fixedly connected to the upper measuring platform, the bottom end of the shock-absorbing return spring is fixedly connected to the lower mounting base, and the axial dimension of the shock-absorbing return spring is greater than the axial dimension of the locating pin, and the bottom end of the locating pin is spaced apart from the lower mounting base;

[0014] The electromagnet is arranged on the upper measuring platform or the lower mounting base, and the upper measuring platform can move downward under the magnetic force of the electromagnet and is horizontally rigidly connected to the lower mounting base through the plug-in fit of the positioning pin and the connecting hole.

[0015] Preferably, the electromagnet is arranged in the middle of the lower mounting base.

[0016] Preferably, there are multiple shock-absorbing reset springs, and the multiple shock-absorbing reset springs are evenly distributed around the circumference of the rotation axis of the auger rod.

[0017] Preferably, the axis locator is an RTK locator.

[0018] Preferably, the upper measuring platform is provided with a compass for indicating direction.

[0019] Preferably, the positioning pin includes a columnar section and a conical section that are coaxially fixedly connected, the top end of the columnar section is fixedly connected to the upper measuring platform, the bottom end of the columnar section is fixedly connected to the large diameter end of the conical section, and the radial dimension of the columnar section is equal to the radial dimension of the connecting hole.

[0020] Preferably, the connecting hole is a through hole.

[0021] Another object of the present invention is to provide a drilling machine for pile foundation construction, including the above-mentioned drilling positioning device for pile foundation construction, characterized in that it also includes the auger rod, the upper fixed frame and the drive motor, the top end of the auger rod is rotatably connected to the upper fixed frame, the drive motor is fixedly mounted on the upper fixed frame and is transmission-connected to the auger rod, the lower mounting base is fixedly mounted on the drive motor, and the positioning axis of the axis locator coincides with the rotation axis of the auger rod.

[0022] Beneficial effects of the present invention:

[0023] The present invention adopts a method of combining axis positioning and angle positioning. First, an axis locator and an angle detector are installed on the upper measuring platform. Then, a shock-absorbing reset spring, a positioning pin and an electromagnet are arranged between the upper measuring platform and the lower mounting base. The axial size of the shock-absorbing reset spring is larger than the axial size of the positioning pin, so that when the electromagnet is energized, the upper measuring platform and the positioning pin can move downward under the action of the magnetic force, and the positioning pin is plugged into the connecting hole on the lower mounting base to realize the rigid connection between the upper measuring platform and the lower mounting base in the horizontal direction, so that the axis locator can locate the horizontal position of the rotating axis of the spiral drill rod, and the angle detector can detect the rotation of the spiral drill rod. The angle detector can detect the angle between the rotating axis of the spiral drill rod and the horizontal plane, which not only realizes the direct positioning of the guide hole, but also improves the positioning accuracy of the guide hole; when the electromagnet is powered off, under the elastic force of the shock-absorbing reset spring, the upper measuring platform drives the positioning pin to move upward and disengage from the lower mounting base, so that the upper measuring platform and the lower mounting base are flexibly connected. The shock-absorbing reset spring can buffer the vibration and protect the axis locator and angle detector on the upper measuring platform, thereby ensuring the measurement accuracy of the positioning device and extending the service life of the positioning device, while realizing dynamic monitoring of the guide hole construction and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the hole positioning device for pile foundation construction of the present invention;

[0025] Figure 2 It is a front view of the hole positioning device for pile foundation construction of the present invention;

[0026] Figure 3 A side view of the hole positioning device for pile foundation construction according to the present invention;

[0027] Figure 4 It is a structural schematic diagram of the hole-guiding machine of the present invention.

[0028] Description of reference numerals in the figures:

[0029] 1. Upper measuring platform; 2. Axis locator; 3. Angle detector; 4. Lower mounting base; 5. Locating pin; 6. Connecting hole; 7. Shock-absorbing return spring; 8. Electromagnet; 9. Compass; 10. Auger rod; 11. Upper fixing bracket; 12. Drive motor. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0034] Examples, such as Figure 1-Figure 4 As shown, a drilling positioning device for pile foundation construction is installed on a drilling machine, which can improve the positioning accuracy of the drilling machine during construction and improve the drilling construction efficiency. The positioning device includes:

[0035] The upper measuring platform 1 is arranged in a horizontal direction.

[0036] The axis locator 2 is provided on the upper measuring platform 1 and can locate the horizontal position of the rotation axis of the auger rod 10 .

[0037] The angle detector 3 is provided on the upper measuring platform 1 and can measure the angle between the rotation axis of the auger rod 10 and the horizontal plane.

[0038] The lower mounting base 4 is arranged directly below the upper measuring platform 1 , and the lower mounting base 4 is parallel to the upper measuring platform 1 .

[0039] The positioning pin 5 is vertically arranged between the upper measuring platform 1 and the lower mounting base 4, and the top end of the positioning pin 5 is fixedly connected to the upper measuring platform 1; the lower mounting base 4 is provided with a connecting hole 6 that matches the positioning pin 5.

[0040] The shock-absorbing reset spring 7 is arranged between the upper measuring platform 1 and the lower mounting base 4, and the top end of the shock-absorbing reset spring 7 is fixedly connected to the upper measuring platform 1, and the bottom end of the shock-absorbing reset spring 7 is fixedly connected to the lower mounting base 4; the axial dimension of the shock-absorbing reset spring 7 is larger than the axial dimension of the locating pin 5, and the distance between the bottom end of the locating pin 5 and the lower mounting base 4 is set.

[0041] The electromagnet 8 is arranged on the upper measuring platform 1 or the lower mounting base 4, and the upper measuring platform 1 can move downward under the magnetic force of the electromagnet 8 and is horizontally rigidly connected to the lower mounting base 4 through the plug-in fit of the positioning pin 5 and the connecting hole 6.

[0042] The present application adopts a method that combines axis positioning and angle positioning. An axis locator 2 and an angle detector 3 are first installed on the upper measuring platform 1. Then, a shock-absorbing reset spring 7, a positioning pin 5 and an electromagnet 8 are arranged between the upper measuring platform 1 and the lower mounting base 4. The axial dimension of the shock-absorbing reset spring 7 is larger than the axial dimension of the positioning pin 5, so that when the electromagnet 8 is energized, the upper measuring platform 1 and the positioning pin 5 can move downward under the action of the magnetic force, and the positioning pin 5 is plugged into the connecting hole 6 on the lower mounting base 4 to achieve a rigid connection between the upper measuring platform 1 and the lower mounting base 4 in the horizontal direction, so that the axis locator 2 can position the horizontal position of the rotating axis of the spiral drill rod 10. , and the angle detector 3 can detect the angle between the rotation axis of the spiral drill rod 10 and the horizontal plane, which not only realizes the direct positioning of the guide hole, but also improves the positioning accuracy of the guide hole; when the electromagnet 8 is powered off, under the elastic force of the shock-absorbing reset spring 7, the upper measuring platform 1 drives the positioning pin 5 to move upward and disengage from the lower mounting base 4, so that the upper measuring platform 1 and the lower mounting base 4 are flexibly connected. The shock-absorbing reset spring 7 can buffer the vibration and protect the axis locator 2 and the angle detector 3 on the upper measuring platform 1, thereby ensuring the measurement accuracy of the positioning device and extending the service life of the positioning device. At the same time, dynamic monitoring of the guide hole construction is realized and construction efficiency is improved.

[0043] In a specific embodiment, if Figure 1 、 Figure 2 As shown, the electromagnet 8 is fixedly mounted in the middle of the lower mounting base 4 .

[0044] This arrangement is because: fixing the electromagnet 8 in the middle of the lower mounting base 4 can make the magnetic force of the electromagnet 8 on the upper measuring platform 1 more uniform, and make the movement state of each part of the upper measuring platform 1 the same, thereby ensuring that the positioning pin 5 can be accurately inserted into the connecting hole 6 of the lower mounting base 4.

[0045] Preferably, there are multiple shock-absorbing reset springs 7 , and the multiple shock-absorbing reset springs 7 are evenly distributed around the circumference of the rotation axis of the auger rod 10 .

[0046] This arrangement is because: evenly distributing multiple shock-absorbing reset springs 7 around the circumference of the rotation axis of the spiral drill rod 10 can make the shock-absorbing reset springs 7 have equal elastic force on each part of the upper measuring platform 1, further ensuring that the motion state of each part of the upper measuring platform 1 is the same.

[0047] In a specific embodiment, if Figure 1 As shown, the axis locator 2 is an RTK locator; the RTK locator utilizes high-precision Beidou (or GPS) positioning and RTK carrier phase differential technology, and is an existing technology.

[0048] This setting is because: RTK locator is a type of satellite locator, and its positioning accuracy can reach 1mm.

[0049] Preferably, a compass 9 for indicating direction is provided on the upper measuring platform 1 .

[0050] In a specific embodiment, if Figure 1 、 Figure 3 As shown, the positioning pin 5 includes a columnar section and a conical section that are coaxially fixedly connected. The top end of the columnar section is fixedly connected to the upper measuring platform 1, and the bottom end of the columnar section is fixedly connected to the large diameter end of the conical section. The radial dimension of the columnar section is equal to the radial dimension of the connecting hole 6.

[0051] This arrangement is because: when the upper measuring platform 1 moves downward under the magnetic force of the electromagnet 8, the radial dimension of the conical section of the locating pin 5 is smaller than the radial dimension of the connecting hole 6 on the lower mounting base 4, so that the bottom end of the locating pin 5 can be accurately inserted into the connecting hole 6, and the horizontal rigid connection between the upper measuring platform 1 and the lower mounting base 4 is achieved through the abutment between the columnar section of the locating pin 5 and the wall of the connecting hole 6.

[0052] Preferably, the connecting hole 6 is a through hole.

[0053] Specific embodiments, such as Figure 1-Figure 4 As shown, a hole positioning device for pile foundation construction, the positioning device includes:

[0054] The upper measuring platform 1 is a rectangular steel plate and is arranged in a horizontal direction.

[0055] The RTK locator is detachably fixedly mounted in the middle of the upper measuring platform 1 , and the measuring axis of the RTK locator coincides with the rotation axis of the auger rod 10 , so that the RTK locator can locate the horizontal position of the rotation axis of the auger rod 10 .

[0056] The angle detector 3 is detachably fixedly mounted on the upper measuring platform 1 , and the angle detector 3 can measure the angle between the rotation axis of the auger rod 10 and the horizontal plane.

[0057] The lower mounting base 4 is arranged directly below the upper measuring platform 1 , and the lower mounting base 4 is parallel to the upper measuring platform 1 .

[0058] Locating pins 5, two locating pins 5 are arranged between the upper measuring platform 1 and the lower mounting base 4, one on the left and one on the right, in the vertical direction, and the top of the locating pin 5 is fixedly connected to the upper measuring platform 1; a connecting hole 6 corresponding to the locating pin 5 is provided on the lower mounting base 4, and the radial dimension of the columnar section of the locating pin 5 is equal to the radial dimension of the connecting hole 6, and the radial dimension of the conical section of the locating pin 5 is smaller than the radial dimension of the connecting hole 6.

[0059] Shock-absorbing reset spring 7, four shock-absorbing reset springs 7 are evenly distributed around the circumference of the measuring axis of the RTK locator and are arranged between the upper measuring platform 1 and the lower mounting base 4, and the top end of the shock-absorbing reset spring 7 is fixedly connected to the upper measuring platform 1, and the bottom end of the shock-absorbing reset spring 7 is fixedly connected to the lower mounting base 4; the axial dimension of the shock-absorbing reset spring 7 is greater than the axial dimension of the locating pin 5, and the distance between the bottom end of the locating pin 5 and the lower mounting base 4 is set.

[0060] The electromagnet 8 is detachably fixedly mounted in the middle of the lower mounting base 4. When the electromagnet 8 is energized, the upper measuring platform 1 can move downward under the magnetic force of the electromagnet 8 and the upper measuring platform 1 is horizontally rigidly connected to the lower mounting base 4 through the plug-in fit of the positioning pin 5 and the connecting hole 6.

[0061] In the positioning measurement state, under the magnetic force of the electromagnet 8, the upper measuring platform 1 and the lower mounting base 4 are horizontally rigidly connected, which can ensure the positioning measurement accuracy of the hole guide; during the hole guide construction, the upper measuring platform 1 is separated from the lower mounting base 4 through the elastic force of the shock-absorbing reset spring 7 on the upper measuring platform 1, which can isolate the vibration of the spiral drill rod 10 during operation and protect the RTK locator and angle detector 3 installed on the upper measuring platform 1.

[0062] Examples, such as Figure 4 As shown, a boring machine for pile foundation construction includes the above-mentioned positioning device and an auger rod 10, an upper fixing frame 11 and a drive motor 12; wherein, the top end of the auger rod 10 is rotatably connected to the upper fixing frame 11; the drive motor 12 is fixedly mounted on the upper fixing frame 11, and the drive motor 12 is transmission-connected to the auger rod 10, for driving the auger rod 10 to rotate around its own rotation axis; the lower mounting base 4 is fixedly mounted on the drive motor 12, and the positioning axis of the axis locator 2 coincides with the rotation axis of the auger rod 10.

[0063] The fixed connection between the lower mounting base 4 and the drive motor 12 may be achieved by any known fixed connection method, such as a bolt connection.

[0064] The use process of the positioning device of the present invention is as follows:

[0065] The positioning device is fixedly installed on the boring machine, and the positioning axis of the axis locator 2 coincides with the rotation axis of the auger rod 10 of the boring machine; according to the position on the design drawing, the electronic coordinates of the boring (that is, the pile foundation) are input into the axis locator 2 of the positioning device, and the boring position is positioned by satellite. When the boring machine drives the auger rod 10 to move horizontally to just above the boring position, the angle between the rotation axis of the auger rod 10 and the horizontal plane is detected by the angle detector 3, and the angle of the auger rod 10 is adjusted to the position, and then the electromagnet 8 is powered off, and then the boring construction operation is carried out.

[0066] During the drilling process, the drilling can be paused multiple times at irregular intervals, and by energizing the electromagnet 8, the horizontal position and inclination angle (the angle between the axis and the horizontal plane) of the guide hole axis can be positioned and measured, and fine-tuned by the guide hole machine, and then the guide hole can be dynamically monitored to reduce manual hole positioning errors and secondary pile adjustment errors.

[0067] Compared with the existing technology, this application has at least the following beneficial technical effects:

[0068] This application uses satellite positioning to locate the position of the lead hole, which can control the positioning accuracy of the lead hole within 1mm, greatly improving the positioning accuracy of the lead hole; at the same time, this application uses a positioning device to directly and automatically locate the position of the lead hole, which can reduce labor intensity and improve construction efficiency.

[0069] Using the positioning device in this application to locate the guide hole can reduce the manual measurement time of each pile by 10 days / sub-array, reduce the quality management cost by 2 people*10 days / sub-array, reduce the secondary hole expansion cost by 1,000 yuan / sub-array, and reduce the secondary pile adjustment cost by 1,000 yuan / sub-array.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A hole positioning device for pile foundation construction, characterized in that: include: Upper measuring platform (1); An axis locator (2), the axis locator (2) being arranged on the upper measuring platform (1), and the axis locator (2) being capable of locating the horizontal position of the rotation axis of the auger rod (10); An angle detector (3), the angle detector (3) being arranged on the upper measuring platform (1), and the angle detector (3) being capable of measuring the angle between the rotation axis of the auger rod (10) and the horizontal plane; A lower mounting base (4), wherein the lower mounting base (4) is arranged directly below the upper measuring platform (1); A positioning pin (5), the positioning pin (5) being arranged between the upper measuring platform (1) and the lower mounting base (4), the top end of the positioning pin (5) being fixedly connected to the upper measuring platform (1), and the lower mounting base (4) being provided with a connection hole (6) matching the positioning pin (5); A shock-absorbing reset spring (7), wherein the top end of the shock-absorbing reset spring (7) is fixedly connected to the upper measuring platform (1), the bottom end of the shock-absorbing reset spring (7) is fixedly connected to the lower mounting base (4), and the axial dimension of the shock-absorbing reset spring (7) is greater than the axial dimension of the positioning pin (5) and the bottom end of the positioning pin (5) is spaced apart from the lower mounting base (4); An electromagnet (8) is provided on an upper measuring platform (1) or a lower mounting base (4), and the upper measuring platform (1) can move downward under the magnetic force of the electromagnet (8) and is horizontally rigidly connected to the lower mounting base (4) through the plug-in fit of a positioning pin (5) and a connecting hole (6).

2. A hole positioning device for pile foundation construction according to claim 1, characterized in that: The electromagnet (8) is arranged in the middle of the lower mounting base (4).

3. A hole positioning device for pile foundation construction according to claim 2, characterized in that: There are multiple shock-absorbing reset springs (7), and the multiple shock-absorbing reset springs (7) are evenly distributed around the circumference of the rotation axis of the spiral drill rod (10).

4. A hole positioning device for pile foundation construction according to claim 1, characterized in that: The axis positioner (2) is an RTK positioner.

5. A hole positioning device for pile foundation construction according to claim 4, characterized in that: The upper measuring platform (1) is provided with a compass (9) for indicating direction.

6. A hole positioning device for pile foundation construction according to claim 1, characterized in that: The positioning pin (5) comprises a coaxially fixedly connected columnar section and a conical section, the top end of the columnar section is fixedly connected to the upper measuring platform (1), the bottom end of the columnar section is fixedly connected to the large diameter end of the conical section, and the radial dimension of the columnar section is equal to the radial dimension of the connecting hole (6).

7. A hole positioning device for pile foundation construction according to claim 6, characterized in that: The connecting hole (6) is a through hole.

8. A drilling machine for pile foundation construction, comprising the drilling positioning device for pile foundation construction according to any one of claims 1 to 7, characterized in that: The invention also includes the auger rod (10), an upper fixing frame (11) and a driving motor (12), wherein the top end of the auger rod (10) is rotatably connected to the upper fixing frame (11), the driving motor (12) is fixedly mounted on the upper fixing frame (11) and is transmission-connected to the auger rod (10), the lower mounting base (4) is fixedly mounted on the driving motor (12), and the positioning axis of the axis positioner (2) coincides with the rotation axis of the auger rod (10).

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