Method for measuring a pile ship included angle change value

Abstract

The present application relates to pile driving construction technology field of pile barge, disclose a kind of measurement method of pile barge included angle variation value, install a detection frame on pile frame, install the fixed head of pull rope displacement sensor on detection frame, the fixed end of the fixed head of pull rope displacement sensor is fixed on the deck surface on the top of hull;During pile driving, the distance between pull rope displacement sensor and the fixed head of pull rope displacement sensor is measured in real time using pull rope displacement sensor, and real-time observation value is obtained;According to real-time observation value, the point-line distance of pull rope displacement sensor to pile frame rotating shaft, the point-line distance of the fixed head of pull rope displacement sensor to pile frame rotating shaft, the real-time angle of pile barge is calculated using trigonometric function relationship.The present application replaces pile barge included angle with the point-line distance of pull rope displacement sensor to pile frame rotating shaft and the point-line distance of the fixed head to pile frame rotating shaft, i.e.line-line included angle, more close to actual pile barge included angle, to improve the measurement accuracy of the included angle of pile frame and hull.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile driving construction of a pile driving barge, and particularly relates to a method for measuring a pile barge included angle change value. BACKGROUND

[0002] A pile driving barge drives piles into the bottom of the water by lifting a pile hammer and making it free fall, and by impact force. In the process of pile driving, the pile driving angle needs to be adjusted by adjusting the attitude of the pile frame. At present, the bottom of the pile frame of most pile driving barges is hinged with the front end of the barge body through a support, so that it has the ability to rotate along the pile frame rotation axis to adjust the pile driving angle. In the process of the pile frame rotating, the included angle change value between the pile frame and the barge body is generally measured by an inclination sensor. The double-axis inclination sensor is usually installed on the pile frame and the barge body, and the double-axis inclination sensor measures the included angle between the X-axis and the Y-axis and the horizontal plane. The double-axis inclination sensor measures the linear surface included angle, but the included angle between the pile frame and the barge body that we need is the surface-surface included angle, or the linear-linear included angle that can represent the surface-surface included angle. When the pile frame and the barge body have inclination angles in both the X-axis and the Y-axis directions, the linear surface included angle and the linear-linear included angle are not equivalent, and there may be an error that is difficult to correct.

[0003] When the included angle between the pile frame and the barge body is measured by the inclination sensor, the initial inclination angle of the pile frame is set to zero, so the change value of the inclination angle of the pile frame is the real-time observation value of the inclination sensor on the pile frame. The inclination sensor is installed on the barge body, the initial inclination angle of the barge body is set to zero, so the change value of the inclination angle of the barge body is the real-time observation value of the inclination sensor on the barge body. Then the included angle change value between the pile frame and the barge body is equal to the change value of the inclination angle of the pile frame minus the change value of the inclination angle of the barge body. When the inclination sensors of the pile frame and the barge body are installed, installation errors are brought in, which are difficult to accurately measure and correct.

[0004] Therefore, it is necessary to provide a method for measuring the included angle change value of a pile barge, which measures the linear-linear included angle between the pile frame and the barge body, so as to improve the measurement accuracy of the included angle between the pile frame and the barge body, and obtain a higher precision and a more actual included angle between the pile frame and the barge body. SUMMARY

[0005] The purpose of the present application is to overcome the error problem of measuring the included angle change value between the pile frame and the barge body, and to provide a method for measuring the included angle change value of a pile barge, which improves the measurement accuracy of the included angle between the pile frame and the barge body.

[0006] The technical scheme adopted by the present application to achieve the purpose is as follows:

[0007] A method for measuring the included angle change value of a pile barge, comprising the following steps:

[0008] Step 1: Fix a detection frame on the pile frame, install the pull rope displacement sensor on the detection frame, pull out the fixed head of the pull rope displacement sensor and fix it to the fixed end on the top deck of the hull. The pull rope of the pull rope displacement sensor is perpendicular to the rotation axis of the pile frame.

[0009] Step 2: During the pile driving process, the distance between the pull rope displacement sensor and the fixed head of the pull rope displacement sensor is measured in real time using the pull rope displacement sensor to obtain the real-time observation value;

[0010] Step 3: Based on the real-time observed values, the point-to-line distance from the rope displacement sensor to the pile frame rotation axis, and the point-to-line distance from the fixed head of the rope displacement sensor to the pile frame rotation axis, the real-time angle between the pile frame and the hull is calculated using trigonometric functions.

[0011] In the above technical solution, the testing frame is welded from stainless steel and has been waterproofed.

[0012] In the above technical solution, the number of the rope displacement sensors is n, n>1, and the n rope displacement sensors are installed on the detection frame in a straight line array, which is parallel to the rotation axis of the pile frame; the top deck surface of the hull is provided with n fixed ends corresponding to the rope displacement sensors, and the fixed head of each rope displacement sensor is fixed to the corresponding fixed end.

[0013] In the above technical solution, during the pile driving process, the distance between each rope displacement sensor and its fixed head is measured in real time to obtain multiple real-time observation values. These multiple real-time observation values ​​are cross-checked, and real-time observation values ​​with deviations greater than a preset value are discarded to obtain the remaining real-time observation values. Based on the remaining real-time observation values, the point-to-line distance from the rope displacement sensor to the pile frame rotation axis corresponding to the remaining real-time observation values, and the point-to-line distance from the fixed head of the rope displacement sensor to the pile frame rotation axis corresponding to the remaining real-time observation values, multiple real-time angles between the pile frame and the hull are calculated using trigonometric functions. The average value of these multiple real-time angles is then calculated to obtain the final real-time angle between the pile frame and the hull.

[0014] In the above technical solution, the rope displacement sensor is mounted on the detection frame through a shock-absorbing structure.

[0015] In the above technical solution, the shock absorption structure includes a mounting box, the bottom of which is provided with a cable outlet hole, and the pull rope displacement sensor is installed inside the mounting box; a screw is provided at each of the four corners of the top of the mounting box, and the testing frame is provided with mounting holes for the screws to pass through, and a nut is tightened on the top of each screw; a first shock absorption spring is fitted on the screw between the testing frame and the mounting box, and the bottom of the testing frame and the top of the mounting box are respectively provided with limiting slots for limiting the first shock absorption spring; a second shock absorption spring is fitted on the screw between the testing frame and the nut, and the top of the testing frame and the bottom of the nut are respectively provided with limiting slots for limiting the second shock absorption spring.

[0016] In the above technical solution, the number of the damping structures is n, n>1. Each rope displacement sensor is installed on the detection frame along a straight line array through a damping structure, and the straight line is set parallel to the rotation axis of the pile frame.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The method for measuring the change value of the pile-ship angle of the present invention uses the point-to-line distance from the rope displacement sensor to the pile frame rotation axis and the point-to-line distance from the fixed head of the rope displacement sensor to the pile frame rotation axis to replace the angle between the pile frame and the ship hull. That is, the angle between the pile frame and the ship hull is a line-to-line angle. Compared with the line-to-plane angle between the pile frame and the ship hull in the prior art, the line-to-line angle between the pile frame and the ship hull of the present invention is closer to the actual angle between the pile frame and the ship hull, thereby improving the measurement accuracy of the angle between the pile frame and the ship hull, and obtaining a more accurate and more realistic angle between the pile frame and the ship hull.

[0019] 2. The detection frame of the present invention is equipped with multiple rope displacement sensors along a straight line array. The observation values ​​measured by the multiple rope displacement sensors are cross-checked, and the observation values ​​with deviation values ​​greater than the preset value are eliminated. The remaining observation values ​​are fitted to finally obtain the real-time angle between the pile frame and the ship hull, so that the measured angle value between the pile frame and the ship hull is more accurate.

[0020] 3. The rope displacement sensor of the present invention is installed on the detection frame through a shock-absorbing structure. The first and second shock-absorbing springs of the shock-absorbing structure reduce the influence of the pile frame vibration on the observed value measured by the rope displacement sensor during the pile driving process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure for measuring the change in the angle between the pile and the vessel as described in this invention.

[0023] Figure 2 This is a bottom view of the detection frame equipped with multiple (5) rope displacement sensors as described in this invention.

[0024] Figure 3 This is a schematic diagram of the structure for measuring the change in the included angle of a pile-boat equipped with a shock-absorbing structure, as described in this invention.

[0025] Figure 4 This is a side view of the testing frame with a shock-absorbing structure according to the present invention.

[0026] Figure 5 This is a side view of the testing frame with multiple (5) shock-absorbing structures as described in this invention.

[0027] In the diagram: 1-Rope displacement sensor, 2-Shock absorption structure, 201-Mounting box, 202-Outlet hole, 203-Screw, 204-Nut, 205-First shock absorption spring, 206-Second shock absorption spring, 3-Detection frame, 4-Fixed end, 5-Pile frame rotating shaft. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0029] Example 1

[0030] A method for measuring the change in the angle between the pile and the vessel, see [link / reference]. Figure 1 , Figure 2 , Figure 4 This includes the following steps:

[0031] Step 1: Fix a testing frame 3 on the pile frame. Install the pull-rope displacement sensor 1 on the testing frame 3 (the testing frame 3 is fixedly installed on the pile frame, and the pull-rope displacement sensor 1 is installed on the testing frame 3, therefore the pull-rope displacement sensor 1 and the pile frame are an integral structure). Pull out the fixed head of the pull-rope displacement sensor 1 and fix it to the fixed end on the top deck surface of the hull. The pull rope of the pull-rope displacement sensor 1 (the pull rope between the pull-rope displacement sensor 1 and the fixed head of the pull-rope displacement sensor 1) is perpendicular to the rotation axis 5 of the pile frame. The testing frame 3 is welded from stainless steel and waterproofed; the point-to-line distance between the pull-rope displacement sensor 1 and the rotation axis 5 (axis) of the pile frame is fixed; the point-to-line distance between the fixed head of the pull-rope displacement sensor 1 and the rotation axis 5 (axis) of the pile frame is fixed.

[0032] Step 2: During the pile driving process, the distance between the pull rope displacement sensor 1 and the fixed head of the pull rope displacement sensor 1 is measured in real time to obtain the real-time observation value.

[0033] Step 3: Based on the real-time observed values, the point-to-line distance from the rope displacement sensor 1 to the pile frame rotation axis 5, and the point-to-line distance from the fixed head of the rope displacement sensor 1 to the pile frame rotation axis 5, the real-time angle between the pile frame and the hull is calculated using trigonometric functions.

[0034] In step 2, the real-time observation values ​​are sent to the host computer in real time. The host computer calculates the real-time angle between the pile frame and the ship hull based on the real-time observation values, the point-to-line distance from the rope displacement sensor 1 to the pile frame rotation axis 5, and the point-to-line distance from the fixed head of the rope displacement sensor 1 to the pile frame rotation axis 5, using trigonometric functions.

[0035] The formula for calculating the angle between the pile frame and the hull is as follows:

[0036] ;

[0037] In the formula, This represents the angle between the pile driver and the ship's hull. The distance between the point and line from the rope displacement sensor 1 to the pile frame rotation axis 5 (axis line), in meters; The distance between the fixed head of the rope displacement sensor 1 and the rotating shaft 5 (axis) of the pile frame is represented by the line-point distance, in meters. The distance between the pull rope displacement sensor 1 and its fixed head is represented in meters (m).

[0038] To make the measured angle between the pile and the hull more accurate, see [reference needed]. Figure 2 In this embodiment, the number of rope displacement sensors 1 is n (preferably 5), n>1. The n rope displacement sensors 1 are installed in a straight line array on the detection frame 3, and the straight line is parallel to the rotation axis 5 of the pile frame. The top deck surface of the hull is provided with n fixed ends 4 corresponding to the rope displacement sensors 1, and the fixed head of each rope displacement sensor 1 is fixed to the corresponding fixed end.

[0039] During the pile driving process, each rope displacement sensor 1 is used to measure the distance between the rope displacement sensor 1 and its fixed head in real time, obtaining multiple real-time observation values. These multiple real-time observation values ​​are cross-checked, and real-time observation values ​​with deviations greater than a preset value are discarded, leaving the remaining real-time observation values. Based on the remaining real-time observation values, the point-to-line distance from the rope displacement sensor 1 to the pile frame rotation axis 5 corresponding to the remaining real-time observation values, and the point-to-line distance from the fixed head of the rope displacement sensor 1 to the pile frame rotation axis 5 corresponding to the remaining real-time observation values, multiple real-time angles between the pile frame and the hull are calculated using trigonometric functions. The average of these multiple real-time angles is then calculated to obtain the final real-time angle between the pile frame and the hull.

[0040] The formula for calculating the real-time angle between the final pile frame and the hull is as follows:

[0041] ;

[0042] In the formula, This represents the real-time angle between the pile frame and the hull corresponding to the first rope displacement sensor 1. This represents the real-time angle between the pile frame and the hull corresponding to the m-th rope displacement sensor 1; represents the final real-time angle between the pile and the hull; m represents the number of remaining real-time observations.

[0043] Example 3

[0044] When the piling vessel is driving piles, the pile frame vibrates, causing a change in the distance between the rope displacement sensor 1 and its fixed head. Therefore, based on Example 1, see... Figure 3 , Figure 4 The pull rope displacement sensor 1 is mounted on the detection frame 3 through the shock absorption structure 2. The shock absorption structure 2 reduces the influence of the pile frame vibration on the distance (observed value) between the pull rope displacement sensor 1 and the fixed head of the pull rope displacement sensor 1, thereby making the observed value of the pull rope displacement sensor 1 more accurate.

[0045] The shock-absorbing structure 2 includes a mounting box 201, with a cable outlet 202 at the bottom. The cable displacement sensor 1 is installed inside the mounting box 201. When the shock-absorbing structure 2 is fixed to the detection frame 3, the cable outlet 202 faces the top deck surface of the hull, facilitating the pulling of the cable displacement sensor 1's fixed head from the cable outlet 202 and its fixing to the fixed end 4 on the top deck surface of the hull.

[0046] See Figure 4Each of the four corners of the top of the mounting box 201 is provided with a screw 203. The testing frame 3 is provided with mounting holes for the screws 203 to pass through, and a nut 204 is tightened on the top of each screw 203. A first damping spring 205 is fitted onto the screw 203 between the testing frame 3 and the mounting box 201. The bottom of the testing frame 3 and the top of the mounting box 201 are respectively provided with limiting slots to limit the first damping spring 205 and prevent it from swaying left and right. A second damping spring 206 is fitted onto the screw 203 between the testing frame 3 and the nut 204. The top of the testing frame 3 and the bottom of the nut 204 are respectively provided with limiting slots to limit the second damping spring 206 and prevent it from swaying left and right.

[0047] Furthermore, each screw 203 has an external thread at its top, allowing the nut 204 to be tightened onto the top of the screw 203. Once the nut 204 is tightened onto the top of the screw 203, it is secured with adhesive to prevent loosening. The outer diameter of the nut 204 is larger than the diameter of the second damping spring 206.

[0048] Example 4

[0049] Based on Examples 1-3, when the number of rope displacement sensors 1 is n, the number of damping structures 2 is also n, n>1. Each rope displacement sensor 1 is installed on the detection frame 3 along a straight line array through a damping structure 2, and the straight line is set parallel to the rotation axis of the pile frame.

[0050] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for measuring the change in the angle between a pile and a vessel, characterized in that, Includes the following steps: Step 1: Fix a detection frame on the pile frame, install the pull rope displacement sensor on the detection frame, pull out the fixed head of the pull rope displacement sensor and fix it to the fixed end on the top deck of the hull. The pull rope of the pull rope displacement sensor is perpendicular to the rotation axis of the pile frame. The number of the rope displacement sensors is n, where n>1. The n rope displacement sensors are mounted on the detection frame in a straight line array, and the straight line is parallel to the rotation axis of the pile frame. The top deck surface of the hull is provided with n fixed ends corresponding to the rope displacement sensors, and the fixed head of each rope displacement sensor is fixed to the corresponding fixed end. Step 2: During the pile driving process, the distance between the pull rope displacement sensor and the fixed head of the pull rope displacement sensor is measured in real time using the pull rope displacement sensor to obtain the real-time observation value; During the pile driving process, the distance between each rope displacement sensor and its fixed head is measured in real time to obtain multiple real-time observation values. These real-time observation values ​​are cross-checked, and those with deviations greater than a preset value are discarded to obtain the remaining real-time observation values. Based on the remaining real-time observation values, the point-to-line distance from the rope displacement sensor to the pile frame rotation axis, and the point-to-line distance from the fixed head of the rope displacement sensor to the pile frame rotation axis, multiple real-time angles between the pile frame and the hull are calculated using trigonometric functions. The average of these multiple real-time angles is then calculated to obtain the final real-time angle between the pile frame and the hull. Step 3: Based on the real-time observed values, the point-to-line distance from the rope displacement sensor to the pile frame rotation axis, and the point-to-line distance from the fixed head of the rope displacement sensor to the pile frame rotation axis, the real-time angle between the pile frame and the hull is calculated using trigonometric functions.

2. The measurement method according to claim 1, characterized in that, The testing frame is made of welded stainless steel and has been waterproofed.

3. The measurement method according to claim 1, characterized in that, The rope displacement sensor is mounted on the testing frame via a shock-absorbing structure.

4. The measurement method according to claim 3, characterized in that, The shock absorption structure includes a mounting box with a cable outlet at the bottom. The pull rope displacement sensor is installed inside the mounting box. A screw is located at each of the four corners of the top of the mounting box. The testing frame has mounting holes for the screws to pass through, and a nut is tightened onto the top of each screw. A first shock-absorbing spring is fitted onto the screw between the testing frame and the mounting box. Limiting grooves for limiting the first shock-absorbing spring are located at the bottom of the testing frame and the top of the mounting box. A second shock-absorbing spring is fitted onto the screw between the testing frame and the nut. Limiting grooves for limiting the second shock-absorbing spring are located at the top of the testing frame and the bottom of the nut.

5. The measurement method according to claim 3, characterized in that, The number of the damping structures is n, where n>1. Each rope displacement sensor is mounted on the detection frame along a straight line array through a damping structure, and the straight line is set parallel to the rotation axis of the pile frame.

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