Wind direction measuring method for tower crane

Abstract

The invention discloses a wind direction measurement method for a tower crane. A wind direction measurement system for the tower crane comprises a wind indicator, a wind direction sensor and a wind direction sensor, the rotary encoder is mounted at the rotary center of the tower crane and is used for measuring the rotary angle of the tower crane; and the controller is a tower crane controller, reads the wind direction of the wind indicator and the rotary encoder in real time, and calculates the absolute wind direction. Compensation is automatically calculated by combining the wind indicator and the rotary encoder, absolute wind direction measurement in rotation operation of the tower crane can be achieved, and the method has the advantages of being simple, low in cost, relatively high in reliability and the like.

Description

Technical Field

[0001] This invention relates to a wind direction measurement method, specifically a wind direction measurement method for tower cranes. Background Technology

[0002] In the safe operation of tower cranes, wind direction measurement is crucial for ensuring wind resistance stability and operational safety. Operating units adjust the boom orientation based on wind direction to reduce wind load torque and store historical wind direction data for accident tracing or wind-induced vibration analysis. Currently, wind vanes on the market measure relative wind direction based on the tower crane's coordinate system, not absolute wind direction in the geographic coordinate system. Therefore, when the tower crane is rotating, the wind vane's reading is not the actual wind direction. In practical applications, absolute wind direction is required. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides a method for measuring wind direction for tower cranes. By combining a wind vane and a slewing encoder for automatic calculation and compensation, the method can measure the absolute wind direction during the slewing operation of the tower crane. It features a simple method, low cost, and relatively high reliability, thus solving the problem of inaccurate measurement of absolute wind direction during the slewing operation of the tower crane.

[0004] Relative wind direction: The wind vane is based on the wind direction deflection angle in the tower crane coordinate system.

[0005] Absolute wind direction: The wind vane is based on the wind deflection angle in the geographic coordinate system.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a wind direction measurement method for tower cranes, wherein the wind direction measurement method for tower cranes is based on the working method of a wind direction measurement system for tower cranes, and the wind direction measurement system for tower cranes includes: Wind vane: Used to detect relative wind direction; Slewing encoder: Installed at the slewing center of the tower crane, used to measure the slewing angle of the tower crane; Controller: This is the tower crane controller, which reads the wind direction from the wind vane and the slewing encoder in real time to calculate the absolute wind direction.

[0007] Furthermore, the wind vane, rotary encoder, and controller input are connected.

[0008] Furthermore, the wind vane is installed on the unobstructed top of the tower crane and automatically aligns with the wind direction via its tail fin.

[0009] Furthermore, the wind vane includes a tail fin, a pointing stick, and an angle sensor. The tail fin and the pointing stick form the wind vane head, which is connected to the angle sensor via a rotating shaft. The physical rotation of the wind vane is converted into an electrical signal and sent to the controller to be interpreted as the corresponding angle value, thereby calculating the relative wind direction.

[0010] Furthermore, the controller automatically records the initial values ​​of the wind vane and slewing encoder, with true north as 0°. When the tower crane rotates, the controller reads the values ​​of the wind vane and slewing encoder in real time, automatically calculates and compensates for the deflection of the wind direction relative to the initial position of the crane boom, and then calculates the absolute wind direction and wind force level.

[0011] The beneficial effects of this invention are: by combining wind vane and slewing encoder for automatic calculation and compensation, the absolute wind direction can be measured during the slewing operation of the tower crane. It has the characteristics of simple method, low cost and relatively high reliability. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0014] A method for measuring wind direction for tower cranes, the method being based on the working method of a tower crane wind direction measurement system, the tower crane wind direction measurement system comprising: a wind vane: used to detect relative wind direction; a slewing encoder: installed at the slewing center of the tower crane, used to measure the slewing angle of the tower crane; and a controller: the tower crane controller, which reads the wind direction from the wind vane and the slewing encoder in real time to calculate the absolute wind direction.

[0015] The wind vane, rotary encoder, and controller input are connected.

[0016] The wind vane is installed on the unobstructed top of the tower crane and automatically aligns with the wind direction via its tail fin.

[0017] The wind vane includes a tail fin, a pointing stick, and an angle sensor. The tail fin and pointing stick together form the wind vane head. The angle sensor is connected to the rotating shaft, which converts the physical rotation of the wind vane into an electrical signal and sends it to the controller to be interpreted as the corresponding angle value, thereby calculating the relative wind direction.

[0018] The wind direction measurement method for tower cranes includes: the controller automatically records the initial values ​​of the wind vane and the slewing encoder, with due north as 0°. When the tower crane rotates, the controller reads the values ​​of the wind vane and the slewing encoder in real time, automatically calculates and compensates for the deflection of the wind direction relative to the initial position of the crane boom, and then calculates the absolute wind direction and wind force level.

[0019] 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 or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for measuring wind direction for tower cranes, characterized in that, Tower crane wind direction measurement systems include: Wind vane: Used to detect relative wind direction; Slewing encoder: Installed at the slewing center of the tower crane, used to measure the slewing angle of the tower crane; Controller: This is the tower crane controller, which reads the wind direction from the wind vane and the slewing encoder in real time to calculate the absolute wind direction.

2. A method for measuring wind direction for tower cranes according to claim 1, characterized in that, The wind vane, rotary encoder, and controller input are connected.

3. A method for measuring wind direction for tower cranes according to claim 2, characterized in that, The wind vane is installed on the unobstructed top of the tower crane and automatically aligns with the wind direction via its tail fin.

4. A method for measuring wind direction for tower cranes according to claim 2, characterized in that, The wind vane includes a tail fin, a pointing stick, and an angle sensor. The tail fin and pointing stick together form the wind vane head. The angle sensor is connected to the rotating shaft, which converts the physical rotation of the wind vane into an electrical signal and sends it to the controller to be interpreted as the corresponding angle value, thereby calculating the relative wind direction.

5. A method for measuring wind direction for tower cranes according to claim 2, characterized in that, The controller automatically records the initial values ​​of the wind vane and slewing encoder, with true north as 0°. When the tower crane rotates, the controller reads the values ​​of the wind vane and slewing encoder in real time, automatically calculates and compensates for the deflection of the wind direction relative to the initial position of the crane boom, and then calculates the absolute wind direction and wind force level.