A wind power front-end crane auxiliary device

Abstract

The application discloses a wind power front crane auxiliary device and belongs to the technical field of wind power tower cylinder front crane hoisting. The device comprises a fixing base, opposite side walls of the fixing base are respectively provided with a fixing arm, the fixing arm defines a containing hole, a first bearing is arranged in the containing hole, an adjusting rod is slidably arranged in the inner ring of the first bearing. The adjusting rod has a first end located in the containing hole and a second end located outside the containing hole. A pressing ring is fixedly arranged on the outer wall of the first end, a pressing plate is slidably arranged between the pressing ring and the first bearing, a compression spring is arranged between the pressing plate and the pressing ring, a pressure sensor is arranged between the pressing plate and the first bearing, and the pressure sensor is signal-connected with a monitoring assembly. A connecting part is arranged on the outer wall of the second end, a traction rope is connected to the connecting part, and the other end of the traction rope is used for being connected to the lifting arm of the front crane. An operator can judge the distance between the two front cranes according to the change of the pressure value, timely adjust the position, and realize synchronous cooperation of the two front cranes.

Description

Technical Field

[0001] This application relates to the field of wind turbine tower front-end hoisting technology, and in particular to an auxiliary device for wind turbine front-end hoisting. Background Technology

[0002] In the current booming wind power industry, wind turbine towers, as key supporting structures for wind turbine generators, are crucial in their manufacturing, transportation, and installation. Among these, the hoisting process of wind turbine towers is particularly critical, directly affecting the smooth progress of subsequent installation work and the safety and reliability of the entire wind power project. Currently, using two reach stackers positioned on either side of the wind turbine tower for hoisting is a common and effective operating method.

[0003] However, in practice, coordinating two reach stackers for lifting operations presents numerous challenges, as operators rely solely on visual observation of each other's positions to ensure synchronization. But wind turbine towers are often quite large, making it difficult for operators to fully and accurately observe the position and movements of the other reach stacker. This lack of synchronization can cause excessive tension on the reach stacker's boom, hook, wire rope, and other components, potentially leading to equipment damage. Summary of the Invention

[0004] The purpose of this application is to provide an auxiliary device for wind turbine front-end cranes, which solves the problem of difficulty in synchronizing two front-end cranes during the hoisting of wind turbine towers in the prior art.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] This application provides a wind turbine front-end crane auxiliary device, including: a fixed base, a fixed arm is respectively provided on two opposite side walls of the fixed base, the fixed arm defines a receiving hole, a first bearing is provided in the receiving hole, and the fixed base can be fixedly installed on the outer wall of the wind turbine tower;

[0007] An adjusting rod is slidably inserted through the inner ring of the first bearing. The adjusting rod has a first end located inside the receiving hole and a second end located outside the receiving hole. A pressure ring is fixedly provided on the outer wall of the first end. A pressure plate is slidably provided between the pressure ring and the first bearing. A compression spring is provided between the pressure plate and the pressure ring. A pressure sensor is provided between the pressure plate and the first bearing.

[0008] The second end of the traction rope has a connecting part on its outer wall. One end of the traction rope is connected to the connecting part, and the other end is used to connect to the boom of the front crane.

[0009] A monitoring component, which is connected to the pressure sensor signal.

[0010] In operation, first, the mounting base is fixedly installed in the middle of the outer wall of the wind turbine tower, ensuring that the fixed arms on both sides of the mounting base are parallel to the axis of the wind turbine tower. Next, the booms of the two reach stackers are connected to the connecting parts of the two fixed arms via traction ropes. After completing the above steps, the wind turbine tower is lifted using the two reach stackers. It is important to note that at this point, the adjusting rod should have a certain axial displacement distance under the tension of the traction ropes. The pressure measured by the pressure sensor at this time is set as the standard pressure, corresponding to the standard distance between the two reach stackers. During subsequent lifting of the wind turbine tower by the two reach stackers, when the parallel distance between the two reach stackers increases, the traction rope will pull the adjusting rod to move, the pressure ring will move towards the pressure plate, compressing the compression spring and increasing the pressure sensor pressure; conversely, when the parallel distance between the two reach stackers decreases, the compression spring will rebound, decreasing the pressure sensor pressure. Operators can monitor the pressure sensor values ​​in real time through the monitoring components, judging the distance changes between the two reach stackers based on the pressure value changes, and thus promptly move the reach stackers closer or further apart to achieve synchronized operation.

[0011] Optionally, the traction rope includes a first traction rope and a second traction rope. One end of the first traction rope and the second traction rope are connected to the connecting part, and the other end is respectively connected to different positions of the boom. An angle sensor is provided in the receiving hole. The rotating shaft of the angle sensor is rotatably connected to the adjusting rod. The angle sensor is signal-connected to the monitoring component.

[0012] Optionally, a gear is provided on the rotating shaft of the angle sensor, and an internal gear that meshes with the gear is provided axially on the adjusting rod.

[0013] Optionally, the sensor's rotating shaft is provided with a key, the adjusting rod defines a keyway, and the sensor's rotating shaft is key-connected to the adjusting rod.

[0014] During the hoisting of wind turbine towers, the coordination of the speeds of the two reach stackers is crucial for both safety and efficiency. This solution incorporates an angle sensor within a receiving hole to monitor the synchronization of the two reach stackers' speeds. Specifically, the angle sensor's shaft is rotatably connected to an adjusting rod, and the adjusting rod and angle sensor can slide relative to each other. In this design, the first and second traction ropes are connected to the end and middle of the boom, respectively. When the two reach stackers' speeds are asynchronous, the speed difference causes the second traction rope to exert a torque on the adjusting rod, causing it to rotate. Since the angle sensor's shaft and the adjusting rod are connected via gears and internal gears or keys for synchronized rotation, the rotation of the adjusting rod drives the angle sensor's shaft to rotate synchronously. The angle sensor monitors the rotation angle of the shaft in real time and converts the angle signal into an electrical signal output. Operators can obtain the angle sensor values ​​through the monitoring components and determine whether the speeds of the two reach stackers are synchronized based on changes in the angle values. If the angle value changes, it indicates that the two front cranes are not moving at the same speed. The operator can adjust the operating speed of the front cranes in time to ensure that the two front cranes move in sync, thus ensuring the safety and stability of the wind turbine tower hoisting process.

[0015] Compared with existing technologies, the beneficial effects achieved by this application are as follows: When the two reach stackers of this application are used to lift wind turbine towers, as the parallel distance between the two reach stackers increases, the traction rope will pull the adjusting rod to move, and the pressure ring will move towards the pressure plate, compressing the compression spring and increasing the pressure of the pressure sensor; conversely, when the parallel distance between the two reach stackers decreases, the compression spring will rebound, and the pressure of the pressure sensor will decrease. Operators can monitor the pressure sensor values ​​in real time through the monitoring components, and judge the distance changes between the two reach stackers based on the pressure value changes, allowing for timely adjustments to bring the reach stackers closer or further away, achieving synchronized operation between the two reach stackers. This effectively avoids the problem of excessive tension on the boom, wire rope, and other components of the reach stackers due to asynchronous operation, which could lead to equipment damage. Attached Figure Description

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

[0017] Figure 1 These are top views of some embodiments provided in this application;

[0018] Figure 2 These are schematic diagrams of the internal structure of the fixed arm in some embodiments provided in this application;

[0019] Figure 3 These are schematic diagrams illustrating the hoisting of wind turbine towers according to some embodiments provided in this application.

[0020] Explanation of reference numerals in the attached drawings: 1-Fixed base; 2-Wind turbine tower; 3-Adjusting rod; 4-Pressure plate; 5-Compression spring; 6-Pressure sensor; 7-Traction rope; 8-Front-end hoist; 9-Angle sensor; 11-Fixed arm; 31-Pressure ring; 32-Connecting part; 71-First traction rope; 72-Second traction rope; 111-Accommodation hole; 112-First bearing; 113-Second bearing. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure / application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0022] Example 1

[0023] This embodiment describes an auxiliary device for a wind turbine front-end crane, referencing... Figures 1 to 3 The wind turbine front-end crane auxiliary device in this embodiment includes a fixed base 1. A fixed arm 11 is provided on each of the two opposite side walls of the fixed base 1. The fixed arm 11 defines a receiving hole 111, and a first bearing 112 is disposed within the receiving hole 111. In use, the fixed base 1 is fixed to the outer wall of the wind turbine tower 2 by adhesive. Further, an adjusting rod 3 is slidably inserted through the inner ring of the first bearing 112. The adjusting rod 3 has a first end located inside the receiving hole 111 and a second end located outside the receiving hole 111. A pressure ring 31 is fixedly disposed on the outer wall of the first end. A pressure plate 4 is slidably disposed between the pressure ring 31 and the first bearing 112. A compression spring 5 is disposed between the pressure plate 4 and the pressure ring 31. A pressure sensor 6 is disposed between the pressure plate 4 and the first bearing 112, and the pressure sensor 6 is signal-connected to a monitoring component. Further, a connecting part 32 is provided on the outer wall of the second end. A traction rope 7 is connected to the connecting part 32, and the other end of the traction rope 7 is used to connect to the boom of the front-end crane 8.

[0024] In use, first, the mounting base 1 is fixedly installed in the middle of the outer wall of the wind turbine tower 2, so that the fixing arms 11 on both sides of the mounting base 1 are parallel to the axis of the wind turbine tower 2. Next, the booms of the two front-end cranes 8 are connected to the connecting parts 32 of the two fixing arms 11 by the traction ropes 7. After completing the above steps, the wind turbine tower 2 is lifted by the two front-end cranes 8. It should be noted that at this time, the adjusting rod 3 should have a certain axial displacement distance under the tension of the traction rope 7. The pressure measured by the pressure sensor 6 at this time is set as the standard pressure, corresponding to the standard distance between the two front-end cranes 8. During the subsequent lifting of the wind turbine tower 2 by the two front-end cranes 8, when the parallel distance between the two front-end cranes 8 increases, the traction rope 7 will pull the adjusting rod 3 to move, the pressure ring 31 will move towards the pressure plate 4, the compression spring 5 will be compressed, and the pressure of the pressure sensor 6 will increase; when the parallel distance between the two front-end cranes 8 decreases, the compression spring 5 will rebound, and the pressure of the pressure sensor 6 will decrease. Operators can monitor the pressure sensor 6 value in real time through the monitoring component, and judge the distance change between the two reach cranes 8 based on the change in pressure value, so as to move closer or further away in time to achieve synchronous cooperation between the two reach cranes 8.

[0025] Example 2:

[0026] Based on the same inventive concept as Embodiment 1, refer to Figures 1 to 3 The difference is that in this embodiment, the bottom of the fixing seat 1 is provided with a suction cup, and the fixing seat 1 is fixed to the outer wall of the wind turbine tower 2 by the suction cup.

[0027] During the hoisting of the wind turbine tower 2, the coordination of the speeds of the two front-end cranes 8 is crucial to the safety and efficiency of the hoisting. In this embodiment, an angle sensor 9 is installed in the receiving hole 111 to monitor whether the speeds of the two front-end cranes 8 are synchronized. Specifically, the rotating shaft of the angle sensor 9 is rotatably connected to the adjusting rod 3, and the adjusting rod 3 and the angle sensor 9 can be slidably positioned relative to each other. Furthermore, the traction rope 7 includes a first traction rope 71 and a second traction rope 72. One end of the first traction rope 71 and the second traction rope 72 are connected to the connecting part 32, and the first traction rope 71 and the second traction rope 72 are respectively connected to the end and middle position of the boom.

[0028] Angle sensor 9 monitors the rotation angle of adjusting rod 3, thus reflecting whether the speeds of the two front-end cranes 8 are synchronized. During the hoisting of wind turbine tower 2, when the speeds of the two front-end cranes 8 are not synchronized, the speed difference causes the hook of the front-end crane 8 to be pulled, raising the wind turbine tower 2. This, in turn, causes the second traction rope 72 to generate a torque on the adjusting rod 3, causing the adjusting rod 3 to rotate. Since the rotating shaft of angle sensor 9 and adjusting rod 3 are connected by gears and internal gears or keys to achieve synchronized rotation, the rotation of adjusting rod 3 will drive the rotating shaft of angle sensor 9 to rotate synchronously. Angle sensor 9 monitors the rotation angle of the rotating shaft in real time and converts the angle signal into an electrical signal output. Operators can obtain the value of angle sensor 9 through the monitoring component and judge whether the speeds of the two front-end cranes 8 are synchronized based on the change in the angle value. If the angle value changes, it indicates that the speeds of the two front-end cranes 8 are not synchronized. Operators can adjust the operating speed of the front-end cranes 8 in time to ensure that the speeds of the two front-end cranes 8 are coordinated, ensuring the safety and stability of the hoisting process of wind turbine tower 2.

[0029] In this embodiment, a gear is provided on the rotating shaft of the angle sensor 9, and an internal gear meshing with the gear is provided axially on the adjusting rod 3. When the adjusting rod 3 rotates under the action of the traction rope 7, the meshing transmission between the gear and the internal gear drives the rotating shaft of the angle sensor 9 to rotate synchronously, thereby transmitting the rotation angle information of the adjusting rod 3 to the angle sensor 9. In another way to achieve synchronous rotation of the rotating shaft of the angle sensor 9 and the adjusting rod 3, a key is provided on the rotating shaft of the sensor, and the adjusting rod 3 defines a keyway, with the rotating shaft of the sensor and the adjusting rod 3 connected by the key. The cooperation between the key and the keyway allows the rotating shaft of the angle sensor 9 to rotate synchronously when the adjusting rod 3 rotates, ensuring that the angle sensor 9 can accurately monitor the rotation of the adjusting rod 3.

[0030] In this embodiment, the monitoring components include a PLC controller and a display, wherein the PLC controller is a Siemens S7-1200. The display, pressure sensor 6, and angle sensor 9 are respectively connected to the PLC controller for signal transmission. During the hoisting of the wind turbine tower 2, the pressure sensor 6 monitors the pressure applied to it by the pressure plate 4 in real time, and the angle sensor 9 monitors the rotation angle of the adjusting rod 3 in real time. Both sensors convert the monitored pressure and angle signals into electrical signals and transmit them to the PLC controller. After receiving these signals, the PLC controller processes them and outputs the processed data and judgment results to the display via electrical signals. After receiving the signals, the display shows the pressure value, angle value, and corresponding status prompts for the operator to view. Based on the information displayed on the display, the operator can promptly understand the operating status of the two front-end cranes 8. When abnormalities in distance or speed are detected, the operator can quickly make corresponding operational adjustments, thereby ensuring the safety, stability, and efficiency of the hoisting process of the wind turbine tower 2.

[0031] In this embodiment, a second bearing 113 is provided inside the receiving hole 111. The second bearing 113 is located between the pressure ring 31 and the angle sensor 9, and the second end of the adjusting rod 3 slides through the inner ring of the second bearing 113. By providing the second bearing 113, the rotation of the adjusting rod 3 is made smoother.

[0032] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this disclosure / application, and these improvements and modifications should also be considered within the protection scope of this disclosure / application.

Claims

1. A wind turbine front-end crane auxiliary device, characterized in that, include: A fixing seat (1) is provided with a fixing arm (11) on each of the two opposite side walls. The fixing arm (11) defines a receiving hole (111). A first bearing (112) is provided in the receiving hole (111). The fixing seat (1) can be fixedly installed on the outer wall of the wind turbine tower (2). An adjusting rod (3) is slidably inserted through the inner ring of the first bearing (112). The adjusting rod (3) has a first end located inside the receiving hole (111) and a second end located outside the receiving hole (111). A pressure ring (31) is fixedly installed on the outer wall of the first end. A pressure plate (4) is slidably installed between the pressure ring (31) and the first bearing (112). A compression spring (5) is installed between the pressure plate (4) and the pressure ring (31). A pressure sensor (6) is installed between the pressure plate (4) and the first bearing (112). The second end of the traction rope (7) has a connecting part (32) on its outer wall. One end of the traction rope (7) is connected to the connecting part (32), and the other end is used to connect to the boom of the front crane (8). A monitoring component is connected to the pressure sensor (6) via a signal.

2. The wind power front-end crane auxiliary device according to claim 1, characterized in that, The traction rope (7) includes a first traction rope (71) and a second traction rope (72). One end of the first traction rope (71) and the second traction rope (72) are connected to the connecting part (32), and the other end is connected to different positions of the boom. An angle sensor (9) is provided in the receiving hole (111). The rotating shaft of the angle sensor (9) is rotatably connected to the adjusting rod (3). The angle sensor (9) is signal connected to the monitoring component.

3. The wind power front-end crane auxiliary device according to claim 2, characterized in that, The angle sensor (9) has a gear on its rotating shaft, and the adjusting rod (3) has an internal gear that meshes with the gear in the axial direction.

4. The wind power front-end crane auxiliary device according to claim 2, characterized in that, The angle sensor (9) has a key on its rotating shaft, and the adjusting rod (3) defines a keyway. The rotating shaft of the angle sensor (9) is connected to the adjusting rod (3) by the key.

5. The wind power front-end crane auxiliary device according to claim 2, characterized in that, A second bearing (113) is provided in the receiving hole (111). The second bearing (113) is located between the pressure ring (31) and the angle sensor (9). The second end of the adjusting rod (3) slides through the inner ring of the second bearing (113).

6. The wind power front-end crane auxiliary device according to claim 1, characterized in that, The mounting base (1) is glued to the outer wall of the wind turbine tower (2).

7. The wind power front-end crane auxiliary device according to claim 1, characterized in that, The bottom of the fixing seat (1) is provided with a suction cup, and the fixing seat (1) is fixed to the outer wall of the wind turbine tower (2) by the suction cup.

8. The wind power front-end crane auxiliary device according to claim 2, characterized in that, The monitoring components include a PLC controller and a display, and the display, the pressure sensor (6), and the angle sensor (9) are respectively connected to the PLC controller via signals.

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