CN-121989027-A - Wind turbine generator system bolt pretightning force monitoring robot

Abstract

The invention discloses a wind turbine generator bolt pretightening force monitoring robot, which relates to the technical field of wind turbine generator monitoring and comprises a robot body, ultrasonic pretightening force sensors and a screwing mechanism, wherein the ultrasonic pretightening force sensors are arranged on the head parts of bolts on the wind turbine generator, cameras are symmetrically arranged at the bottom of the robot body and are electrically connected with a controller on the robot body, and the screwing mechanism is arranged at the bottom of the robot body and is positioned between the two cameras. According to the invention, the ultrasonic pre-tightening force sensor is arranged on the bolt to be monitored to detect the pre-tightening force of the bolt in real time, detection data is fed back to the controller on the robot body, the robot body moves to the position of the bolt with a problem under the tracking effect of the camera, and then the ratchet sleeve and the electric push rod on the tightening mechanism are used for correspondingly tightening the loosened nut on the nut, so that the whole process is automatically carried out, the operation and maintenance time is reduced, and the detection efficiency of the bolt is improved.

Inventors

• QING XIAOMEI
• SUN CHANG
• DING YOU
• LU YUTAO
• ZHANG QIAN
• DAI CHENGJUN
• MA ZICHAO
• YAN TINGJUN

Assignees

• 南通理工学院

Dates

Publication Date

20260508

Application Date

20240102

Claims (6)

1. 1. The wind turbine generator system bolt pretightening force monitoring robot comprises a robot body (4) and an ultrasonic pretightening force sensor (3) and is characterized by further comprising a screwing mechanism (6), wherein the ultrasonic pretightening force sensor (3) is arranged at the head of a bolt (2) on the wind turbine generator system (1), cameras (5) are symmetrically arranged at the bottom of the robot body (4), and the cameras (5) are electrically connected with a controller on the robot body (4); the screwing mechanism (6) is arranged at the bottom of the robot body (4) and is positioned between the two cameras (5).
2. 2. The wind turbine generator system bolt pretightening force monitoring robot of claim 1, wherein the tightening mechanism (6) comprises a fixing frame (61), a lifting assembly (65) and a tightening assembly (66), the fixing frame (61) is arranged at the bottom of the robot body (4), the fixing frame (61) is connected with a base (63) through a guide rod (62), the guide rod (62) is connected with a lifting disc (64) in a sliding manner, the lifting assembly (65) is arranged on the fixing frame (61) and is used for driving the tightening assembly (66) on the lifting disc (64) to move up and down along the guide rod (62), and the tightening assembly (66) is used for tightening a loose nut on the bolt (2).
3. 3. The wind turbine generator system bolt pretightening force monitoring robot of claim 2, wherein the lifting assembly (65) comprises a driving motor (651) and a driving screw rod (652), the driving motor (651) is arranged on the fixing frame (61), one end of the driving screw rod (652) is rotationally connected with the base (63), the other end of the driving screw rod (652) is connected with an output shaft of the driving motor (651) through a coupler, and the lifting disc (64) is in threaded connection with the driving screw rod (652) through a screw rod nut.
4. 4. The wind turbine generator system bolt pretightening force monitoring robot of claim 2, wherein the screwing assembly (66) comprises a ratchet sleeve (661) and an electric push rod (663), a wrench (662) rotating with a lifting disc (64) is arranged on the upper portion of the ratchet sleeve (661), the fixed end of the electric push rod (663) is hinged with an overhanging plate (664) at the top of the lifting disc (64) through a pin shaft, and the telescopic end of the electric push rod (663) is hinged with the wrench (662) through a pin shaft.
5. 5. The wind turbine generator system bolt pretightening force monitoring robot of claim 4, wherein the base (63) is provided with a through hole (631) matched with the ratchet sleeve (661).
6. 6. The wind turbine generator system bolt pretightening force monitoring robot of claim 2, wherein the guide rods (62) are provided with a plurality of guide rods and are uniformly distributed along the circumference of the base (63).

Description

Wind turbine generator system bolt pretightning force monitoring robot Technical Field The invention relates to the technical field of wind turbine generator system monitoring, in particular to a wind turbine generator system bolt pretightening force monitoring robot. Background In recent years, the assembly capacity of the wind turbine is increasingly increased, the traditional operation and maintenance mode is insufficient to meet the operation and maintenance period of the wind turbine, intelligent monitoring and operation and maintenance are important gradually, the intelligent monitoring and operation and maintenance are also applied to the wind turbine, mechanical structural components such as a tower of the wind turbine are often connected through bolts, when the wind turbine is subjected to extreme loads such as wind, waves and currents for a long time, the pretightening force of the bolts can be damaged, and if the problem bolts are not treated in time, the wind turbine can be damaged. Disclosure of Invention The invention aims to provide a wind turbine generator bolt pretightening force monitoring robot which overcomes the defects in the prior art. The utility model provides a wind turbine generator system bolt pretightning force monitoring robot, includes robot body and ultrasonic pretightning force sensor, still includes tightening mechanism, install the bolt head on the wind turbine generator system ultrasonic pretightning force sensor, the bottom symmetry of robot body is equipped with the camera, the controller electric connection on camera and the robot body, tightening mechanism locates the bottom of robot body and is located between two cameras. Preferably, the tightening mechanism comprises a fixing frame, a lifting assembly and a tightening assembly, wherein the fixing frame is arranged at the bottom of the robot body and is connected with a base through a guide rod, the guide rod is connected with a lifting disc in a sliding mode, the lifting assembly is arranged on the fixing frame and used for driving the tightening assembly on the lifting disc to move up and down along the guide rod, and the tightening assembly is used for tightening a nut loosened on a bolt. Preferably, the lifting assembly comprises a driving motor and a driving screw rod, the driving motor is arranged on the fixing frame, one end of the driving screw rod is rotationally connected with the base, the other end of the driving screw rod is connected with an output shaft of the driving motor through a coupler, and the lifting disc is in threaded connection with the driving screw rod through a screw nut. Preferably, the screwing assembly comprises a ratchet sleeve and an electric push rod, a spanner rotating with the lifting disc is arranged on the upper portion of the ratchet sleeve, the fixed end of the electric push rod is hinged to an overhanging plate at the top of the lifting disc through a pin shaft, and the telescopic end of the electric push rod is hinged to the spanner through the pin shaft. Preferably, the base is provided with a through hole matched with the ratchet sleeve. Preferably, the guide rods are provided with a plurality of guide rods and are uniformly distributed along the circumference of the base. The invention has the following advantages: When the ultrasonic pre-tightening device is used, the pre-tightening force of the bolt is detected in real time by arranging the ultrasonic pre-tightening force sensor on the bolt to be monitored, detection data is fed back to the controller on the robot body, the robot body moves to the position of the bolt with a problem under the tracking effect of the camera, and then the ratchet sleeve and the electric push rod on the tightening mechanism correspondingly tighten the loosened nut, so that the whole process is automatically carried out, the operation and maintenance time is reduced, and the detection efficiency of the bolt is improved. Drawings FIG. 1 is a schematic diagram of the structure of the present invention when the wind turbine is in operation. Fig. 2 is a schematic structural view of the device of the present invention. Fig. 3 is a schematic side view of the tightening mechanism of the present invention. Fig. 4 is a partial enlarged view at a in fig. 3. Fig. 5 is a schematic view of the structure of the bottom of the tightening mechanism of the present invention. Fig. 6 is a schematic diagram of the device of the present invention. Wherein: 1, a wind turbine generator system, 2, bolts, 3, an ultrasonic pretightening force sensor, 4, a robot body, 5, a camera, 6, a screwing mechanism, 61, a fixing frame, 62, a guide rod, 63, a base, 631, a through hole, 64, a lifting disk, 65, a lifting component 651, a driving motor, 652, a driving screw rod, 66, a screwing component, 661, a ratchet sleeve, 662, a spanner, 663, an electric push rod, 664 and an overhanging plate. Detailed Description The following detailed description of the embodiments of the inv