Steel casing deviation monitoring device in pile foundation drilling process

Abstract

The utility model discloses a steel casing deviation monitoring device in a pile foundation drilling process, which belongs to the technical field of building construction, and adopts the technical scheme that the steel casing deviation monitoring device in the pile foundation drilling process is characterized by comprising at least three laser range finders surrounding the periphery of a steel casing; the outer wall of the steel casing is provided with laser reflection stickers in one-to-one correspondence with the laser range finders, laser of the laser range finders is perpendicular to the laser reflection stickers, and the laser, the center of the laser reflection stickers and the axis of the steel casing are located on the same plane. The device has the advantages that the distance is converted into deviation of the steel casing, so that the position of the steel casing is monitored in real time and correspondingly adjusted in the drilling process.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a steel casing deviation monitoring device during the pile foundation drilling process. Background Art

[0002] The existing pile foundation construction plane position control is to place the center point, lead out the cross guard pile, and control the pile foundation deviation by taking the intersection of the wire pulling line as the pile foundation center. During the drilling rig construction process, the wire pulling cannot be achieved due to mechanical obstruction of the drilling rig, and the plane position of the steel casing cannot be controlled. During the pile foundation drilling construction process, the steel casing is easily displaced due to the address, drilling rig offset, etc., and it is not easy to detect during the process, and the deviation cannot be adjusted in time, which can easily cause the pile position to exceed the limit after drilling, affecting the quality of the project. Utility Model Content

[0003] The utility model aims to provide a device for monitoring the deviation of a steel casing during the pile foundation drilling process.

[0004] The utility model is realized by the following measures: a device for monitoring the deviation of a steel casing during pile foundation drilling, characterized in that it comprises at least three laser rangefinders surrounding the periphery of the steel casing;

[0005] A laser reflective sticker corresponding to the laser rangefinder is arranged on the outer wall of the steel casing. The laser of the laser rangefinder is perpendicular to the laser reflective sticker. The laser, the center of the laser reflective sticker and the axis of the steel casing are all in the same plane.

[0006] Furthermore, the laser rangefinders are evenly distributed around the periphery of the steel casing in a circumferential direction. To facilitate installation and positioning, four laser rangefinders are generally provided.

[0007] Furthermore, it also includes a support frame of the laser rangefinder, wherein the lower end of the support frame is fixed on the ground;

[0008] The laser rangefinder is arranged on the support frame through a detachable connection. The support frame can directly adopt a guard pile, and the laser rangefinder is fixed on the guard pile by bolts.

[0009] Furthermore, the laser reflective sticker is bonded to the outer wall of the steel casing; or connected to the steel casing through an auxiliary part;

[0010] The auxiliary parts include a vertical plate parallel to the axis of the steel casing, a horizontal plate perpendicular to the vertical plate, and a roller rotatably arranged below the vertical plate, the inner side of the outer surface of the roller is tangent to the outer wall of the steel casing, the outermost end of the outer surface of the roller is flush with the outer wall of the vertical plate, the axis of the roller is perpendicular to the axis of the steel casing, a screw is rotatably arranged on the vertical plate and above the horizontal plate, a moving rod is arranged on the screw through a threaded connection, a strip opening is arranged on the horizontal plate, the moving rod moves in the strip opening along the axis direction of the screw, and the outer wall of the moving rod is in close contact with the inner wall of the steel casing. In this way, the outer diameter of the roller can be regarded as the distance between the laser reflective sticker and the outer wall of the steel casing and they are kept consistent.

[0011] Furthermore, a fixing plate is fixedly provided at the lower end of the moving rod, and push rods are symmetrically provided at both ends of the fixing plate, and the push rods are closely attached to the inner wall of the steel casing.

[0012] Furthermore, the outer end of the push rod is a spherical surface.

[0013] Furthermore, it also includes a mobile terminal for receiving the monitoring signal of the laser rangefinder, and the mobile terminal is used to display the monitoring signal of the laser rangefinder in real time. The mobile terminal is generally a mobile phone, and the laser rangefinder uses Bluetooth to transmit signals with the mobile terminal. This is a prior art and will not be repeated here.

[0014] Working principle:

[0015] In the first step, the measuring instrument accurately measures the center position of the pile foundation, and based on the center position, the positions of several laser rangefinders around the steel casing are measured, and then the support frame is installed, generally 5 meters away from the steel casing.

[0016] The second step is to paste the laser reflective sticker on the steel casing on the same horizontal plane according to the deployed laser rangefinder. Before pasting, the steel casing wall needs to be polished with sandpaper and cleaned before pasting. After pasting, it is rolled with a rubber ring to squeeze out the bubbles and make it firmly bonded; or install the auxiliary parts, the outer wall of the roller is close to the outer wall of the steel casing, and the screw is rotated to make the inner side of the moving rod or the top rod close to the inner wall of the steel casing, and then paste the laser reflective sticker. The laser reflective sticker can be installed with auxiliary parts to realize the turnover of the laser reflective sticker.

[0017] The third step is to turn on the laser rangefinder, observe the laser reflective sticker on the wall of the steel casing, align the laser with the center of the laser reflective sticker, then take a reading and fine-tune the position of each laser rangefinder to ensure that the measurement data of all laser rangefinders is 5 meters.

[0018] Step 4. Turn on the Bluetooth of the mobile phone to connect to the laser rangefinder, click Measure, and check whether the data is transmitted. If the transmission is normal, check whether the displayed data is consistent with the data displayed on the laser rangefinder to avoid reading errors due to inconsistent unit settings.

[0019] The fifth step is to check the measurement accuracy. After observing the readings, if the error is within 5 mm, no adjustment is made. If the deviation exceeds 5 mm, adjust the laser rangefinder until the accuracy meets the requirements.

[0020] In the sixth step, the pile foundation construction begins, the drilling rig is in place, and the drilling construction begins. After drilling five meters, the mobile phone measures the distance via Bluetooth. If the deviation meets the design requirements, continue drilling. After drilling 10 meters, measure every 5 meters. If the distance exceeds the limit, it means that the steel casing is offset. The drilling rig construction is suspended in time, the drilling rig support condition and the surrounding address condition are checked, and the drilling is readjusted and then drilled into the center of the pile foundation.

[0021] Step 7: Continuously monitor the deviation during pile foundation drilling.

[0022] The technical solution provided by the embodiment of the utility model has the following beneficial effects: by converting the distance into the steel casing deviation, the position of the steel casing can be monitored in real time during the drilling process and corresponding adjustments can be made; the overall structure is simple, the installation is convenient, the turnover efficiency is high, and the cost is low; real-time monitoring of the drilling rig during the drilling process can be achieved, and there is no need to stop the rig and lift the drill to check the pile position. If there is a large deviation, it can be discovered in time during the construction process, thus avoiding safety and quality hazards, saving construction time and effectively ensuring the quality of pile foundation construction, providing favorable guarantees for the construction of the next step of the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present utility model, a brief introduction will be given to the drawings used in the embodiments below. Obviously, the drawings listed below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0025] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of the installation of auxiliary parts in the embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the auxiliary parts in the embodiment of the utility model.

[0028] In the accompanying drawings, the list of components represented by each number is as follows: 1. Steel casing; 2. Laser reflective sticker; 3. Auxiliary parts; 4. Guard pile; 5. Laser rangefinder; 6. Mobile phone; 301. Vertical plate; 302. Horizontal plate; 303. Screw; 304. Moving rod; 305. Roller; 306. Push rod; 307. Strip mouth; 30301. Handwheel; 30302. Bearing. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] See also Figure 1-Figure 4 ,in Figure 1 and Figure 2 For the convenience of display, the actual layout is not strictly followed. The guard pile 4 is actually parallel to the axis of the steel casing 1. Figure 1 The laser reflective sticker 2 and the steel casing 1 at A in the middle are displayed in non-proportional scale.

[0031] This embodiment provides a device for monitoring the deviation of a steel casing 1 during pile foundation drilling, which is characterized by comprising at least three laser rangefinders 5 surrounding the outer periphery of the steel casing 1;

[0032] A laser reflective sticker 2 corresponding to the laser rangefinder 5 is arranged on the outer wall of the steel casing 1. The laser of the laser rangefinder 5 is perpendicular to the laser reflective sticker 2. The center of the laser, the laser reflective sticker 2 and the axis of the steel casing 1 are all in the same plane.

[0033] The laser rangefinders 5 are evenly distributed around the periphery of the steel casing 1 in the circumferential direction. For the convenience of installation and positioning, four laser rangefinders 5 are generally provided.

[0034] It also includes a support frame for the laser rangefinder 5, the lower end of the support frame is fixed on the ground;

[0035] The laser rangefinder 5 is arranged on the support frame through a detachable connection. The support frame can directly adopt the guard pile 4, and the laser rangefinder 5 can be fixed on the guard pile 4 by bolts. The depth of the lower end of the guard pile 4 into the soil is more than 50 cm. A corresponding mounting rod or mounting frame can be arranged at the position where the laser rangefinder 5 is installed (on the side wall of the part of the guard pile 4 exposed above the ground), and then the laser rangefinder 5 is fixed on the mounting rod or mounting frame by bolts.

[0036] The laser reflective sticker 2 is bonded to the outer wall of the steel casing 1; or connected to the steel casing 1 through an auxiliary component 3;

[0037] The auxiliary component 3 includes a vertical plate 301 parallel to the axis of the steel casing 1, a horizontal plate 302 perpendicular to the vertical plate 301, and a roller 305 rotatably arranged below the vertical plate 301, the inner side of the outer surface of the roller 305 is tangent to the outer wall of the steel casing 1, the outermost end of the outer surface of the roller 305 is flush with the outer wall of the vertical plate 301, and the axis of the roller 305 is perpendicular to the axis of the steel casing 1. A screw rod 303 is rotatably arranged on the vertical plate 301 and located above the horizontal plate 302. The screw rod 303 is rotatably arranged on the vertical plate 301 through a bearing 30302, and a hand wheel 30301 is fixedly arranged on the outer end of the screw rod. A moving rod 304 is threadedly connected to the screw rod 303, and a strip opening 307 is arranged on the horizontal plate 302. The moving rod 304 moves in the strip opening 307 along the axial direction of the screw rod 303, and the outer wall of the moving rod 304 is in close contact with the inner wall of the steel casing 1. In this way, the outer diameter of the roller 305 can be regarded as the distance between the laser reflective sticker 2 and the outer wall of the steel casing 1 and they are kept consistent.

[0038] A fixing plate is fixedly provided at the lower end of the moving rod 304 , and push rods 306 are symmetrically provided at both ends of the fixing plate, and the push rods 306 are closely attached to the inner wall of the steel casing 1 .

[0039] The outer end of the push rod 306 is spherical.

[0040] It also includes a mobile terminal for receiving the monitoring signal of the laser rangefinder 5. The mobile terminal is used to display the monitoring signal of the laser rangefinder 5 in real time. The mobile terminal generally adopts a mobile phone 6. The laser rangefinder 5 uses Bluetooth to transmit signals with the mobile terminal. This is a prior art and will not be repeated here.

[0041] Working principle:

[0042] In the first step, the measuring instrument accurately measures the center position of the pile foundation, and based on the center position, the positions of several laser rangefinders 5 around the steel casing 1 are measured, and then the support frame is installed, generally 5 meters away from the steel casing.

[0043] In the second step, according to the arranged laser rangefinder, the laser reflective sticker 2 is pasted on the steel casing 1 on the same horizontal plane. Before pasting, the wall of the steel casing 1 needs to be polished with sandpaper and pasted after cleaning. After pasting, it is rolled with a rubber ring to squeeze out bubbles and make it firmly bonded; or the auxiliary part 3 is installed, the outer wall of the roller 305 is close to the outer wall of the steel casing 1, and the screw 303 is rotated to make the inner side of the moving rod 304 or the top rod 306 close to the inner wall of the steel casing 1, and then the laser reflective sticker 2 is pasted. The laser reflective sticker 2 can be installed with the auxiliary part 3 to realize the turnover of the laser reflective sticker 2.

[0044] The third step is to turn on the laser rangefinder 5, observe the laser reflective sticker 2 on the wall of the steel casing 1, align the laser with the center of the laser reflective sticker 2, then take readings, and fine-tune the position of each laser rangefinder 5 to ensure that the measurement data of all laser rangefinders 5 are 5 meters.

[0045] The fourth step is to turn on the Bluetooth of the mobile phone 6 to connect to the laser rangefinder 5, click measurement, and check whether the data is transmitted. If the transmission is normal, check whether the displayed data is consistent with the data displayed on the laser rangefinder 5 to avoid reading errors caused by inconsistent unit settings.

[0046] The fifth step is to check the measurement accuracy. After observing the readings, if the error is within 5 mm, no adjustment is made. If the deviation exceeds 5 mm, adjust the laser rangefinder 5 until the accuracy meets the requirements.

[0047] Step 6. The pile foundation construction begins. The drilling rig is in place and the drilling construction begins. After drilling five meters, the mobile phone 6 measures the distance via Bluetooth. If the deviation meets the design requirements, continue drilling. After drilling 10 meters, measure every 5 meters. If the distance exceeds the limit, it means that the steel casing 1 is offset. The drilling rig construction is suspended in time to check the support of the drilling rig and the surrounding address conditions. After readjustment, drill into the center of the pile foundation.

[0048] Step 7: Continuously monitor the deviation during pile foundation drilling.

[0049] 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 in the protection scope of the present invention.

Claims

1. A device for monitoring the deviation of steel casing during pile foundation drilling, characterized in that: Includes at least three laser rangefinders surrounding the outer periphery of the steel casing; A laser reflective sticker corresponding to the laser rangefinder is arranged on the outer wall of the steel casing. The laser of the laser rangefinder is perpendicular to the laser reflective sticker. The laser, the center of the laser reflective sticker and the axis of the steel casing are all in the same plane.

2. The device for monitoring the deviation of steel casing during pile foundation drilling according to claim 1, characterized in that: The laser rangefinders are evenly distributed around the periphery of the steel casing.

3. The device for monitoring the deviation of steel casing during pile foundation drilling according to claim 1, characterized in that: Also included is a support frame of the laser rangefinder, wherein the lower end of the support frame is fixed on the ground; The laser rangefinder is arranged on the supporting frame through a detachable connection.

4. The device for monitoring the deviation of steel casing during pile foundation drilling according to claim 1, characterized in that: The laser reflective sticker is bonded to the outer wall of the steel casing; or connected to the steel casing through an auxiliary part; The auxiliary parts include a vertical plate parallel to the axis of the steel casing, a horizontal plate perpendicular to the vertical plate, and a roller rotatably arranged under the vertical plate, the inner side of the outer surface of the roller is tangent to the outer wall of the steel casing, the outermost end of the outer surface of the roller is flush with the outer side wall of the vertical plate, the axis of the roller is perpendicular to the axis of the steel casing, a screw is rotatably arranged on the vertical plate and above the horizontal plate, a moving rod is provided on the screw through a threaded connection, a strip opening is provided on the horizontal plate, the moving rod moves in the strip opening along the axial direction of the screw, the outer wall of the moving rod is in close contact with the inner wall of the steel casing, and the laser reflective sticker is bonded to the outer side wall of the vertical plate.

5. The device for monitoring the deviation of steel casing during pile foundation drilling according to claim 4, characterized in that: A fixing plate is fixedly arranged at the lower end of the moving rod, and push rods are symmetrically arranged at both ends of the fixing plate, and the push rods are closely attached to the inner wall of the steel casing.

6. The device for monitoring the deviation of steel casing during pile foundation drilling according to claim 5, characterized in that: The outer end of the push rod is a spherical surface.

7. The device for monitoring the deviation of steel casing during pile foundation drilling according to any one of claims 1 to 6, characterized in that: It also includes a mobile terminal for receiving the monitoring signal of the laser rangefinder, and the mobile terminal is used for displaying the monitoring signal of the laser rangefinder in real time.

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