Power transmission line automatic pit dividing method and system for iron tower foundation construction

Abstract

The invention discloses an automatic power transmission line pit dividing method and system for iron tower foundation construction, and the method comprises the following steps: arranging a laser indicator at the center position of an iron tower, and determining the height of the laser indicator; obtaining construction parameters, wherein the construction parameters comprise horizontal root distance and vertical root distance; determining a target horizontal rotation angle and a target vertical rotation angle of the laser indicator according to the construction parameters; rotating the laser indicating instrument according to the target horizontal rotation angle and the target vertical rotation angle, and emitting laser; confirming the center of the foundation pit according to the laser indication points; according to the method, GPS positioning is not needed, automatic positioning of the foundation pit is achieved in a laser indication mode, and the pit dividing accuracy and the working effect are improved.

Description

Technical Field

[0001] This invention relates to the field of power engineering measurement technology, and more specifically to an automatic method and system for dividing the foundation pits of transmission lines for tower foundation construction. Background Technology

[0002] In the construction of high-voltage and ultra-high-voltage transmission line projects, pit preparation work is usually required before the construction of the tower foundation. As an important preliminary step in the construction of the tower foundation, the positioning accuracy of this work directly affects the spatial layout of the foundation components, the rationality of the structural stress, and the overall construction quality, thereby affecting the operational safety and reliability of the transmission line project.

[0003] In current engineering practice, foundation pit positioning is primarily accomplished through manual measurement. Operators typically use parameters provided in the design drawings, such as the base opening, half-base opening, and foundation type, employing traditional trigonometric calculations and the diagonal method, combined with a theodolite or conventional total station, to perform positioning operations. During on-site operations, multiple manual calculations, angle readings, parameter recordings, and cross-checks are required. The ground marking of the center points of the four foundation pits is completed one by one by manually rotating the instrument and visually interpreting the angles.

[0004] With the development of surveying technology, some engineering projects have begun to try satellite-based auxiliary surveying methods, such as GPS or GNSS systems, for pile location confirmation and foundation pit location setting out. However, such methods are highly dependent on the continuity and stability of satellite signals. In mountainous areas, forest areas, undulating terrain, or power transmission line construction environments with complex signal obstruction, they often face practical limitations such as insufficient accuracy or inability to operate, thus limiting their application scope.

[0005] Therefore, how to improve the efficiency and stability of pit splitting operations is an urgent problem to be solved in this field. Summary of the Invention

[0006] In view of the above problems, the present invention is proposed to provide an automatic pit-dividing method and system for transmission line foundation construction that overcomes or at least partially solves the above problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An automatic trenching method for power transmission line foundation construction includes the following steps: Install a laser pointer at the center of the tower and confirm its height; Obtain construction parameters, including horizontal root opening and vertical root opening; Based on the construction parameters, confirm the target horizontal rotation angle and target vertical rotation angle of the laser pointer; The laser pointing instrument is rotated according to the target's horizontal and vertical rotation angles, and a laser is emitted; the center of the pit is confirmed based on the laser pointing point.

[0008] Preferably, the laser pointer is used to display the horizontal and vertical turning angles in real time.

[0009] Preferably, before rotating the laser pointer, the steps further include: pointing the laser pointer towards the center of the tower or the direction of the line, setting the horizontal angle to zero, and setting the reference direction.

[0010] Preferably, the steps further include: when rotating the laser pointer, comparing the real-time displayed rotation angle with the target rotation angle.

[0011] Preferably, during the comparison, the comparison detection is performed according to a preset tolerance range, and an alarm is triggered when the comparison result enters the tolerance range.

[0012] An automatic trenching system for power transmission lines used in tower foundation construction includes: The parameter input module is used to acquire construction parameters, including horizontal root opening and vertical root opening. The target calculation module is used to determine the target horizontal rotation angle and target vertical rotation angle of the laser pointer based on the construction parameters. A laser pointer is used to emit a laser and to confirm the center of the pit by adjusting the angle.

[0013] Preferably, it also includes an angle monitoring module, which is used to set a reference direction and display the current turning angle based on the reference direction in real time.

[0014] Preferably, the angle monitoring module is also used to compare the current turning angle with the target turning angle and issue an alarm based on the comparison result.

[0015] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an automatic pit-division method and system for transmission line foundation construction, which does not require GPS positioning and uses laser pointing to achieve automatic positioning of the foundation pit, thereby improving the accuracy of pit division and work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an automatic pit-dividing method for power transmission line foundation construction provided in an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the principle of horizontal rotation angle calculation in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the vertical rotation angle calculation principle in an embodiment of the present invention; Figure 4 This is a schematic diagram of an automatic pit-digging system for power transmission lines used in the construction of tower foundations, according to an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 This invention discloses an automatic trenching method for power transmission lines used in tower foundation construction, comprising the following steps: S1: Set up a laser pointer at the center of the tower and confirm the height of the pointer.

[0020] S2: Obtain construction parameters, including horizontal and vertical root openings.

[0021] S3: Confirm the target horizontal rotation angle and target vertical rotation angle of the laser pointer based on the construction parameters.

[0022] S4: Rotate the laser pointing instrument according to the target's horizontal and vertical rotation angles and emit a laser; confirm the center of the pit according to the laser pointing point.

[0023] The following is a detailed explanation of each step in this embodiment: S1 describes the instrument deployment process. In this embodiment, the center of the pit is ultimately indicated by a laser to achieve precise pit division. The laser pointing position is determined by the instrument height and rotation angle. The rotation angle of the laser pointer needs to be determined based on the parameters given in the design drawings and the instrument height.

[0024] In this embodiment, the laser pointer is a total station, which can be installed above the central pile of the tower by means of a frame.

[0025] S2 describes the process of obtaining construction parameters. The construction parameters required in this embodiment include horizontal and vertical root opening parameters.

[0026] S3 represents the calculation process, which determines the target's horizontal and vertical rotation angles based on construction parameters. Specifically, this includes: S31: Calculate the horizontal deflection angle of each foundation pit point, in order to Figure 2 For example.

[0027]

[0028] Where β is the horizontal rotation angle, and x and y are the horizontal root opening parameter and the vertical root opening parameter, respectively.

[0029] S32; Calculate the vertical deflection angle of each foundation pit point, to Figure 3 For example.

[0030]

[0031]

[0032] in, L The parameter is the root of the diagonal. α The vertical rotation angle is h, and the instrument height is h.

[0033] S33: Calculate the slope distance.

[0034]

[0035] Where E is the slant distance.

[0036] In this embodiment, the laser pointer is also used for laser ranging. By comparing the measured distance with the target slant distance, the ground height deviation of the indicated position can be further confirmed.

[0037] S4 describes the operation process of the laser pointer. After the calculation in S3, the design parameters on the drawings are converted into the operating parameters of the laser pointer.

[0038] Before rotating the laser pointer, a reference direction needs to be set. In this embodiment, the "direction of line advance" or "direction of line across" in the tower design drawings is taken as the X-axis direction of the coordinate system, and the current observation direction of the total station is set to this direction manually or optically, that is, this direction is set to 0°, as a horizontal angle reference reference.

[0039] Then, based on the horizontal and vertical rotation angles obtained in S3, the laser pointer is rotated to the target rotation angle. After the rotation is completed, the laser is emitted. At this time, the laser-indicated position is the center of the pit. This process is repeated to confirm the positions of the four pits.

[0040] To further implement the above technical solution, when operating the laser pointer, the current operating parameters, namely the actual horizontal and vertical rotation angles, can be obtained in real time through laser pointing, so that the operator can compare the target parameters in real time.

[0041] Furthermore, when rotating the laser pointer, the displayed rotation angle is automatically compared with the target rotation angle, and an alarm is triggered when the two angles approach the tolerance range based on a preset tolerance range.

[0042] Example 2 like Figure 4 Based on the same inventive concept, this invention discloses an automatic pit-digging system for transmission lines used in the construction of iron tower foundations, including a parameter input module for acquiring construction parameters, which include horizontal and vertical root openings. The target calculation module is used to determine the target's horizontal and vertical rotation angles based on construction parameters. A laser pointer is used to emit a laser and to confirm the center of the pit by adjusting the angle.

[0043] To further implement the above technical solution, an angle monitoring module is also included. The angle monitoring module is used to set the reference direction and display the current turning angle based on the reference direction in real time. The angle monitoring module is also used to compare the current turning angle with the target turning angle and issue an alarm prompt based on the comparison result.

[0044] The following section will use a total station as an example to provide a detailed explanation of this embodiment: The total station integrates an angle measurement module, a laser rangefinder module, a laser pointer, and an angle sensor. It is equipped with a touch screen and processing core based on the Android operating system.

[0045] The target calculation module, parameter input module, and angle monitoring module are all integrated into the total station. The corresponding module's interactive interface is displayed on a touchscreen for operator use.

[0046] The specific operation steps of this embodiment are as follows: Set up a total station at the center pile (point O) of the tower and complete the centering and leveling operations.

[0047] Power on via the touchscreen, click "Measurement of Electrified Towers", then click "Slot Measurement" to start the slot calculation program.

[0048] Manually rotate the telescope lens to accurately aim at the center stake of the adjacent tower or the line direction stake, and set this direction as the direction of line movement; click the "Horizontal Angle Zero" button in the program interface to complete the reference direction setting.

[0049] In the input box of the program interface, enter the foundation half-length opening parameter as 8.0 m (assumed value), the instrument height as 1.5 m, and select the foundation type as "square".

[0050] Click the "Calculate" button. The program interface will immediately display the calculation results table, for example: ① Pit A: Horizontal angle H = 315.000°, vertical angle V = 89.500°; ② Pit B: Horizontal angle H = 45.000°, vertical angle V = 89.500°; ③ Pit C: Horizontal angle H = 135.000°, vertical angle V = 89.500°; ④ Pit D: Horizontal angle H = 225.000°, vertical angle V = 89.500°.

[0051] In the program interface, select "Position A" and begin slowly rotating the total station horizontally. When the horizontal angle display reaches 315° (for example, 314.8°), the instrument will emit a continuous "beep" sound. After fine-tuning to 315°, rotate the telescope until the vertical angle is close to 89.5°, triggering the same alert. After achieving precise alignment, the total station will automatically activate the laser pointer function, projecting a red laser onto the ground. Workers will drive wooden stakes into the laser point and mark it with paint, thus obtaining the center point of the A-leg foundation pit.

[0052] Return to the program interface, select pits B, C, and D in sequence, and repeat step 6 to complete the calibration of the center points of all four pits.

[0053] After the pit is divided, the distance between the two points on the diagonal can be measured and verified. Once the pit dimensions are confirmed to be correct, the excavation of the foundation pit can begin.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic trenching method for transmission line foundation construction, characterized in that, Includes the following steps: Install a laser pointer at the center of the tower and confirm its height; Obtain construction parameters, including horizontal root opening and vertical root opening; Based on the construction parameters, confirm the target horizontal rotation angle and target vertical rotation angle of the laser pointer; The laser pointing instrument is rotated according to the target's horizontal and vertical rotation angles, and a laser is emitted; the center of the pit is confirmed based on the laser pointing point.

2. The automatic trenching method for transmission line foundation construction according to claim 1, characterized in that, The laser pointer is used to display the horizontal and vertical turning angles in real time.

3. The automatic trenching method for transmission line foundation construction according to claim 2, characterized in that, Before rotating the laser pointer, the steps also include: pointing the laser pointer towards the center of the tower or the direction of the line, setting the horizontal angle to zero, and setting the reference direction.

4. The automatic trenching method for transmission line foundation construction according to claim 2 or 3, characterized in that, The steps also include: when rotating the laser pointer, comparing the real-time displayed rotation angle with the target rotation angle.

5. The method for automatic trenching of bookstore wiring in tower foundation construction according to claim 4, characterized in that, During the comparison, the comparison detection is performed according to the preset tolerance range. When the comparison result enters the tolerance range, an alarm is triggered.

6. An automatic trenching system for transmission lines used in the construction of iron tower foundations, characterized in that, include: The parameter input module is used to acquire construction parameters, including horizontal root opening and vertical root opening. The target calculation module is used to determine the target horizontal rotation angle and target vertical rotation angle of the laser pointer based on the construction parameters. A laser pointer is used to emit a laser and to confirm the center of the pit by adjusting the angle.

7. The automatic trenching system for transmission line foundation construction according to claim 6, characterized in that, It also includes an angle monitoring module, which is used to set a reference direction and display the current turning angle based on the reference direction in real time.

8. The automatic trenching system for transmission line foundation construction according to claim 7, characterized in that, The angle monitoring module is also used to compare the current turning angle with the target turning angle and issue an alarm based on the comparison result.

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