Precise measuring and positioning tool for fan assembly

Abstract

The invention belongs to the technical field of measuring equipment, and particularly relates to a precision measuring and positioning tool for fan assembly, which comprises a mounting disc, a laser total station, a shielding assembly and a pneumatic assembly, the laser total station is mounted at the top of the mounting disc, and the mounting disc is rotationally mounted at the top of the triangular bracket; the shielding assembly comprises a fixing frame, connecting frames are symmetrically arranged on the two sides of the fixing frame, and an organ cover is arranged between the connecting frames and the fixing frame. The pneumatic assembly is arranged on the side edge of the fixing frame and used for driving the organ cover to be unfolded or folded, and the pneumatic assembly comprises an air inlet pipe and a second air channel. The pneumatic assembly is arranged to drive the shielding assembly to be unfolded or folded, during measurement and positioning, the shielding assembly is driven by the pneumatic assembly to be unfolded and arranged on the outer side of the laser total station in a covering mode, and the rain shielding, sun shading and anti-collision effects can be achieved; and after positioning is completed, the shielding assembly is driven to be folded towards the middle, occupied space is reduced, and storage and storage are facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring equipment, in particular to a precision measuring and positioning tool for fan assembly. Background Art

[0002] With the growing global demand for clean energy, wind power is becoming an increasingly important sustainable energy source. This is particularly true in ultra-high altitude areas, where wind energy resources are abundant and land is vast. However, wind turbine installation presents numerous challenges due to harsh environmental conditions such as low pressure, low temperatures, strong winds, and low oxygen levels. These challenges not only impact the progress, cost, and safety of wind turbine projects, but also place higher demands on measurement accuracy during the installation process. As a core component of wind turbine projects, the quality of wind turbine installation is directly linked to the success of the project. The installation process includes several key steps, including ground assembly of wind turbine components, hoisting the entire unit, and positioning it in mid-air. During ground assembly, ensuring the precise fit of components such as the nacelle, hub, and blades is crucial. Therefore, the use of high-precision measuring instruments, such as laser total stations, has become essential for improving wind turbine assembly accuracy. Laser total stations, combined with laser ranging technology, can precisely measure and locate the position of wind turbine components, ensuring the required assembly accuracy.

[0003] Patent application CN114964184B discloses a total station. The key technical features of the total station are: an instrument body, a base, and a tripod. The instrument body is mounted on the base, which is mounted on the tripod. The total station also includes a C-shaped rain shield with a downward-facing opening. The central axis of the rain shield is aligned with the axis of the objective lens on the instrument body. The rain shield and the base are detachably connected, and the instrument body is located within the rain shield. The instrument body is located within the rain shield, which shields the instrument body from rain above and on both sides, preventing rain from falling on the instrument body and thus preventing rain from entering the instrument body and causing damage. The total station in this embodiment is suitable for both dry and rainy working conditions, making it more versatile than existing total stations. It also provides a sunshade effect. The rain shield provides lateral light shielding for the objective lens and eyepiece, shielding the instrument body from rain.

[0004] However, the above technology often has the following drawbacks: the existing technology achieves the rain shield function by installing a rain shield. Although the rain shield is detachable, it takes up a lot of space due to its material quality and is inconvenient to store after disassembly, which affects work efficiency. Therefore, the present invention provides a precision measurement and positioning tool for wind turbine assembly. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the precision measurement and positioning tool for wind turbine assembly described in the present invention includes a mounting plate, a laser total station, a shielding component and a pneumatic component; The laser total station is mounted on the top of a mounting plate, and the mounting plate is rotatably mounted on the top of a tripod bracket; The shielding assembly is arranged on the outside of the laser total station, and the shielding assembly includes a fixed frame, connecting frames are symmetrically arranged on both sides of the fixed frame, and an accordion cover is arranged between the connecting frame and the fixed frame; The pneumatic component is arranged on the side of the fixed frame and is used to drive the accordion cover to expand or fold. The pneumatic component includes an air inlet pipe and air duct 2. The air duct 2 is arranged in the middle of the accordion cover. The air duct 2 is connected to the air cavity a provided inside the fixed frame. One end of the air inlet pipe is connected to the air cavity a inside the fixed frame through a connecting component, and the other end of the air inlet pipe is connected to an external two-way air pump.

[0007] Preferably, the connecting component includes a fixing seat fixed on the side wall of the fixing frame, a limiting groove is provided on the side of the fixing seat, a connecting block is slidably arranged in the limiting groove, the air intake pipe is connected to the connecting block through a rotating joint, a plurality of connecting holes are provided inside the fixing seat, which are connection hole one, connection hole two, connection hole three, connection hole four and connection hole five from top to bottom, a plurality of air cavities are provided inside the fixing frame, and the plurality of air cavities are respectively connected to the corresponding connecting holes, and the connecting block is respectively connected to the plurality of connecting holes through the plug-in component.

[0008] Preferably, the plug-in assembly includes a movable cavity opened in the middle of the connecting block, a connecting pipe is slidably installed in the movable cavity, one end of the connecting pipe is plugged into the connecting hole, and the other end of the connecting pipe is connected to the air intake pipe through a telescopic tube, a shift block is fixed to the side wall of the connecting pipe, the end of the shift block passes through the movable groove opened on the connecting block and extends to the outside, and a spring is fixed inside the movable groove to reset the shift block.

[0009] Preferably, storage cavities are provided on both sides of the fixing frame.

[0010] Preferably, an air duct 1 is provided inside the receiving cavity and outside the accordion cover, and the air duct 1 is communicated with the air cavity b provided inside the fixing frame.

[0011] Preferably, an air duct three is provided inside the accordion cover, an inner cavity is opened in the middle of the connecting frame, and an air outlet is opened in the inner cavity toward the inside of the connecting frame, one end of the air duct three is connected to the inner cavity of the connecting frame, and the other end of the air duct three is connected to the air cavity c provided inside the fixed frame.

[0012] Preferably, convex mounting grooves are provided on both sides of the mounting plate, and slide rails are slidably provided in the mounting grooves. The slide rails and the mounting grooves are adapted to each other, and the fixing frame is fixed in the middle of the top of the slide rails. Through holes are symmetrically provided on both sides of the mounting plate, and limiting columns are movably inserted in the through holes. A slot that can be engaged with the limiting column is provided on the middle side wall of the slide rail, and a spring 2 for resetting the limiting column is fixed on the side wall of the mounting plate.

[0013] Preferably, a convex movable block is fixed to the bottom of the connecting frame, and the movable block is slidably arranged in a track groove provided on the top of the slide rail, and a ball is rotatably mounted on the bottom end of the movable block.

[0014] Preferably, a fixing block is fixed in the middle of the track groove, and air outlet holes are symmetrically opened on both sides of the fixing block.

[0015] Preferably, a retaining ring is provided in the air inlet hole inside the fixing seat, and the side of the retaining ring away from the connecting block is connected to a flap through a torsion spring, and a connecting ring is provided on the side of the retaining ring close to the connecting ring, and a sleeve is fixed in the middle of the side wall of the connecting ring, and the sleeve seal is slidably provided in the middle of the retaining ring, and a spring three is fixed between the connecting ring and the retaining ring.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention describes a precision measurement and positioning tool for fan assembly, which drives the shielding component to expand or fold by setting a pneumatic component. During measurement and positioning, the two-way air pump is started to inflate the air duct 2 inside the accordion covers on both sides through the air inlet pipe and the air cavity a, so that the accordion covers on both sides expand at the same time, thereby pushing the connecting frame to expand in the direction away from the fixed frame. At this time, the expanded accordion covers are arranged on the outside of the laser total station, which can protect against rain, sun and collision. In addition, the two-way air pump is used to draw air outward, so that the accordion covers on both sides are folded at the same time, which reduces the space occupied and is convenient for storage.

[0017] 2. The present invention describes a precision measurement and positioning tool for fan assembly. When the accordion cover is unfolded, the connecting pipe 2 and the air inlet pipe are connected through the plug-in assembly and the connecting block. At this time, air can be inflated into the air cavity c, and the gas enters the inner cavity of the connecting frame and is blown out from the air outlet, forming a wind wall on the inner side of the connecting frame to prevent dust from adhering to the objective lens and eyepiece of the laser total station and affecting the observation line of sight.

[0018] 3. The present invention describes a precision measuring and positioning tool for fan assembly. Before folding the accordion cover, the connecting pipe 1 and the air inlet pipe are connected through the plug-in assembly and the connecting block. At this time, air can be inflated into the air cavity b, and the gas is blown out from the air duct 1, which can blow off the dust falling on the surface of the accordion cover, so as to clean the surface of the accordion cover and avoid dust accumulation after the accordion cover is folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a partial structural schematic diagram of the present invention; Figure 4 is a cross-sectional view of a connection frame of the present invention; Figure 5 It is a partial structural cross-sectional view of the present invention; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 yes Figure 5 Enlarged view of point B in the middle; Figure 8 yes Figure 6 Enlarged view of point C in the middle; Figure 9 This is a distribution diagram of the air cavities inside the fixing frame of the present invention.

[0021] In the figure: 1. Mounting plate; 2. Laser total station; 3. Mounting slot; 4. Slide rail; 5. Track slot; 6. Fixing frame; 7. Storage chamber; 8. Organ cover; 9. Connecting frame; 10. Fixing seat; 11. Connecting block; 12. Air inlet pipe; 13. Movable block; 14. Ball bearing; 15. Airway 1; 16. Airway 2; 17. Fixing block; 18. Air outlet; 19. Airway 3; 20. Air outlet; 21. Connecting hole one; 22. Connecting hole two; 23. Connecting hole three; 24. Connecting hole four; 25. Connecting hole five; 26. Movable cavity; 27. Telescopic tube; 28. Connecting tube; 29. ​​Movable groove; 30. Limiting groove; 31. Shift block; 32. Spring one; 33. Slot; 34. Limiting column; 35. Spring two; 36. Retaining ring; 37. Connecting ring; 38. Sleeve; 39. Spring three; 40. Flip plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Example 1: Figures 1 to 9 As shown, a precision measurement and positioning tool for wind turbine assembly according to an embodiment of the present invention includes a mounting plate 1, a laser total station 2, a shielding component, and a pneumatic component; The laser total station 2 is mounted on the top of the mounting plate 1, and the mounting plate 1 is rotatably mounted on the top of the tripod bracket; The shielding assembly is arranged outside the laser total station 2, and the shielding assembly includes a fixed frame 6, and connecting frames 9 are symmetrically arranged on both sides of the fixed frame 6, and an accordion cover 8 is arranged between the connecting frame 9 and the fixed frame 6; The pneumatic assembly is arranged on the side of the fixed frame 6 and is used to drive the accordion cover 8 to expand or retract. The pneumatic assembly includes an air inlet pipe 12 and an air duct 16. The air duct 16 is arranged in the middle of the accordion cover 8. The air duct 16 is connected to the air cavity a provided inside the fixed frame 6. One end of the air inlet pipe 12 is connected to the air cavity a inside the fixed frame 6 through a connecting assembly, and the other end of the air inlet pipe 12 is connected to an external two-way air pump. During operation, during the assembly of the fan, the tripod bracket and the laser total station 2 are installed at the designated location according to the prescribed operating steps, and the laser total station 2 is used to accurately locate the installation position of the parts; then the shielding component is installed on the outside of the laser total station 2, and the air inlet pipe 12 and the two-way air pump are connected, and the two-way air pump is controlled by a remote control device; when measuring and positioning, the two-way air pump is started, and air is blown into the air cavity a through the air inlet pipe 12. The air cavity a is connected to the air duct 2 16 inside the accordion covers 8 on both sides. The air duct 2 16 is provided with multiple groups and is evenly distributed on the sides of the air cavity a. By inflating the air duct 2 16, the accordion covers 8 on both sides are expanded at the same time, thereby pushing the connecting frame 9 to expand in the direction away from the fixed frame 6. At this time, the expansion The accordion cover 8 at the back is arranged on the outside of the laser total station 2, which can play a protective role. On the one hand, it can shelter from rain, prevent rain from entering the laser total station 2, causing damage to the instrument, and prevent rain from falling on the objective lens or eyepiece and affecting observation work; on the other hand, it can prevent sunlight from shining on the objective lens, which will cause blur and color difference in the eyepiece observation image; in addition, when it is overturned by external impact during the measurement and positioning process, the connecting frame 9, accordion cover 8 and fixed frame 6 surround the outside of the laser total station 2, playing a protective and buffering role, preventing the laser total station 2 from direct contact with the ground and other debris, causing damage; in addition, a two-way air pump is used to draw air outward, so that the accordion covers 8 on both sides are folded at the same time, reducing the space occupied and facilitating storage.

[0024] The connecting assembly includes a fixing seat 10 fixed on the side wall of the fixing frame 6, and a limiting groove 30 is provided on the side of the fixing seat 10. A connecting block 11 is slidably provided in the limiting groove 30. The air inlet pipe 12 is connected to the connecting block 11 through a rotating joint. A plurality of connecting holes are provided inside the fixing seat 10, which are, from top to bottom, a connecting hole 1 21, a connecting hole 22, a connecting hole 3 23, a connecting hole 4 24 and a connecting hole 5 25. A plurality of air cavities are provided inside the fixing frame 6, and the plurality of air cavities include an air cavity a, an air cavity b, an air cavity c, an air cavity d and an air cavity e. The plurality of air cavities are respectively connected to the corresponding connecting holes, and the connecting block 11 is respectively connected to the plurality of connecting holes through a plug-in assembly; During operation, the air cavity a is connected to the third connection hole 23, and the connecting block 11 is connected to the third connection hole 23 through the plug-in assembly, so that air is inflated into the air cavities a on both sides to expand the accordion covers 8 on both sides at the same time, and air can also be exhausted to make the accordion covers 8 on both sides fold at the same time; The air cavity d and the air cavity e are separately connected to the accordion covers 8 on both sides. By using a plug-in component to connect the connecting block 11 to the air cavity d and the air cavity e respectively, the accordion cover 8 on one side can be controlled to be expanded or retracted according to the direction of sunlight. For example, when sunlight shines on the objective lens from the front, the accordion cover 8 on the outside of the objective lens can be expanded to block the sunlight from shining on the objective lens and affecting the observation effect. At this time, the eyepiece is in a shaded position and the accordion cover 8 does not need to be expanded to ensure that this side has sufficient brightness to facilitate clear observation of the parameters on the display screen.

[0025] The plug assembly includes a movable chamber 26 defined in the middle of the connecting block 11. A connecting pipe 28 is slidably mounted in the movable chamber 26. One end of the connecting pipe 28 is plugged into the connecting hole. The other end of the connecting pipe 28 communicates with the intake pipe 12 via a telescopic tube 27. A shift block 31 is fixed to the side wall of the connecting pipe 28. The end of the shift block 31 passes through a movable slot 29 defined in the connecting block 11 and extends to the outside. A spring 32 is fixed within the movable slot 29 to return the shift block 31 to its original position. During operation, by pushing the shift block 31 outward, the shift block 31 drives the connecting tube 28 to move laterally, so that the connecting tube 28 slides toward the inside of the active cavity 26 until the end of the connecting tube 28 is disengaged from the connecting hole, removing the restriction on the connecting block 11, and then the position of the connecting block 11 can be moved to align the connecting tube 28 with other air inlet holes. After that, the connecting tube 28 is inserted into different air inlet pipes 12 by rebounding through the spring 1 32, so as to realize the inflation or deflating of different air cavities.

[0026] The fixing frame 6 is provided with a storage cavity 7 on both sides. When the accordion cover 8 is folded during operation, the accordion cover 8 can be stored in the storage cavity 7 so as to protect the accordion cover 8 .

[0027] An air duct 15 is provided inside the storage cavity 7 and outside the accordion cover 8. The air duct 15 is connected to the air cavity b provided inside the fixing frame 6. A plurality of air ducts 15 are provided and are evenly distributed outside the accordion cover 8. During operation, the connecting pipe 28 is connected to the air cavity b. Before the accordion cover 8 is folded, the connecting pipe 28 is connected to the air inlet pipe 12 through the plug-in assembly and the connecting block 11. At this time, the air cavity b can be inflated, and the gas is blown out from the air duct 15, which can blow off the dust that falls on the surface of the accordion cover 8, so as to clean the surface of the accordion cover 8 and avoid dust accumulation after the accordion cover 8 is folded.

[0028] The interior of the accordion cover 8 is provided with an air duct 3 19, of which there are multiple air ducts 19 and are arranged alternately with the air duct 2 16. An inner cavity is opened in the middle of the connecting frame 9, and the inner cavity is provided with an air outlet 20 toward the inner side of the connecting frame 9. One end of the air duct 3 19 is connected to the inner cavity of the connecting frame 9, and the other end of the air duct 3 19 is connected to the air cavity c provided inside the fixed frame 6; During operation, the connecting pipe 282 is connected to the air cavity c. After the accordion cover 8 is unfolded, the connecting pipe 282 is connected to the air inlet pipe 12 through the plug-in assembly and the connecting block 11. At this time, the air cavity c can be inflated, and the gas enters the inner cavity of the connecting frame 9 and is blown out from the air outlet 20, forming a wind wall on the inner side of the connecting frame 9 to prevent dust from adhering to the objective lens and eyepiece of the laser total station 2 and affecting the observation line of sight.

[0029] The mounting plate 1 is provided with convex mounting grooves 3 on both sides, and a slide rail 4 is slidably provided in the mounting groove 3. The slide rail 4 is adapted to the mounting groove 3, and the fixing frame 6 is fixed to the middle of the top of the slide rail 4. Through holes are symmetrically provided on both sides of the mounting plate 1, and a limit column 34 is movably inserted into the through hole. A card slot 33 that can be engaged with the limit column 34 is provided on the middle side wall of the slide rail 4. A spring 35 for resetting the limit column 34 is fixed on the side wall of the mounting plate 1. During operation, when assembling the shielding component, first slide the slide rail 4 into the installation slot 3, and drive the end of the limit column 34 through the spring 2 35 to be inserted into the slot 33 on the side of the slide rail 4, so as to limit the slide rail 4 in the installation slot 3, thereby realizing the rapid disassembly and assembly of the shielding component.

[0030] A convex movable block 13 is fixed to the bottom of the connecting frame 9, and the movable block 13 is slidably set in the track groove 5 provided on the top of the slide rail 4, and the bottom end of the movable block 13 is inlaid with a ball 14 for rotation. During operation, the movable block 13 and the track groove 5 are set to limit the position of the connecting frame 9, and then limit the accordion cover 8, so that the accordion cover 8 is stably set on the outside of the laser total station 2 to play a protective role. By setting the ball 14, the movable block 13 can be supported to reduce the friction of the movable block 13. In addition, a gap is created between the movable block 13 and the bottom of the track groove 5, which is convenient for subsequent cleaning of dust inside the track groove 5.

[0031] A fixing block 17 is fixed in the middle of the track groove 5, and air outlet holes 18 are symmetrically opened on both sides of the fixing block 17; when working, the air outlet holes 18 are connected with the connecting pipe 28, and when the air duct 15 blows air outward to clean the surface of the accordion cover 8, air is blown out from the air outlet holes 18 at the same time to clean the track groove 5 and avoid dust accumulation in the track groove 5.

[0032] Example 2: Figure 8As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a baffle ring 36 is provided in the air inlet hole inside the fixing seat 10, and the side of the baffle ring 36 away from the connecting block 11 is rotatably connected to a flap 40 through a torsion spring, and a connecting ring 37 is provided on the side of the baffle ring 36 close to the connecting ring 37, and a sleeve 38 is fixed in the middle of the side wall of the connecting ring 37, and the sleeve 38 is sealingly slidably arranged in the middle of the baffle ring 36, and a spring 39 is fixed between the connecting ring 37 and the baffle ring 36; during operation, when the movable tube of the plug-in assembly is inserted into the corresponding connecting hole, the movable tube is in close contact with the connecting ring 37 to improve the air tightness of the connection position, and a spring 39 can also be provided on the surface of the connecting ring 37. The flexible rubber pad further improves the air tightness; in addition, when the movable tube squeezes the connecting ring 37 inward, the connecting ring 37 pushes the flap 40 to rotate inward and open through the sleeve 38, so that the connecting tube 28 is conductive, so as to realize inflation and exhaust operations; when the movable tube exits the connecting tube 28, the flap 40 is driven to rotate in the opposite direction by the torsion spring, and fits on the side wall of the retaining ring 36, closing the middle hole of the retaining ring 36, and after the accordion cover 8 is unfolded, the corresponding connecting hole three 23 can be blocked, thereby preventing the accordion cover 8 from being folded by external impact, so that the accordion cover 8 can be stably covered on the outside of the laser total station 2; and at this time, the connecting block 11 and the plug-in assembly can be moved to the second position of the connecting tube 28 to simultaneously realize other tasks.

[0033] Working principle: first assemble the tripod and the laser total station 2, then install the shielding component on the outside of the laser total station 2, and connect the air inlet pipe 12 and the two-way air pump; during the measurement and positioning process, start the two-way air pump, and blow air into the air cavity a through the air inlet pipe 12. The air cavity a is connected with the air duct 2 16 inside the accordion covers 8 on both sides. The air duct 2 16 is provided with multiple groups and is evenly distributed on the sides of the air cavity a. By inflating the air duct 2 16, the accordion covers 8 on both sides are expanded at the same time, thereby pushing the connecting frame 9 to expand in the direction away from the fixed frame 6. At this time, the expanded accordion cover 8 is arranged on the outside of the laser total station 2, which can play the role of rain protection, sun protection and collision prevention. The connecting block 11 and the connecting hole 3 23 are connected by the plug assembly to realize the inflation of air into the air cavity a on both sides so that the accordion covers 8 on both sides are expanded at the same time, and the air can be exhausted outwards so that the accordion covers 8 on both sides are folded at the same time; By using the plug-in assembly to connect the connecting block 11 to the air cavity d and the air cavity e respectively, the accordion cover 8 on one side can be independently controlled to expand or retract according to the direction of sunlight; Before folding the accordion cover 8, the connecting pipe 28 is connected to the air inlet pipe 12 through the plug-in assembly and the connecting block 11. At this time, air can be inflated into the air cavity b, and the air is blown out from the air channel 15 to blow off the dust that has fallen on the surface of the accordion cover 8, so as to clean the surface of the accordion cover 8 and avoid dust accumulation after the accordion cover 8 is folded; the air outlet 18 is connected to the connecting pipe 28, and when the air channel 15 blows air outward to clean the surface of the accordion cover 8, air is blown outward from the air outlet 18 at the same time, so as to clean the track groove 5 and avoid dust accumulation in the track groove 5; When the accordion cover 8 is unfolded, the connecting pipe 28 is connected to the air inlet pipe 12 through the plug-in assembly and the connecting block 11. At this time, air can be inflated into the air cavity c, and the gas enters the inner cavity of the connecting frame 9 and is blown out from the air outlet 20, forming a wind wall on the inner side of the connecting frame 9 to prevent dust from adhering to the objective lens and eyepiece of the laser total station 2 and affecting the observation line of sight.

[0034] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision measurement and positioning tool for fan assembly, characterized by: It includes a mounting plate (1), a laser total station (2), a shielding component and a pneumatic component; The laser total station (2) is mounted on the top of the mounting plate (1), and the mounting plate (1) is rotatably mounted on the top of the tripod bracket; The shielding component is arranged outside the laser total station (2), and the shielding component includes a fixed frame (6), connecting frames (9) are symmetrically arranged on both sides of the fixed frame (6), and an accordion cover (8) is arranged between the connecting frame (9) and the fixed frame (6); The pneumatic component is arranged on the side of the fixed frame (6) and is used to drive the accordion cover (8) to expand or retract. The pneumatic component includes an air inlet pipe (12) and air duct 2 (16). The air duct 2 (16) is arranged in the middle of the accordion cover (8). The air duct 2 (16) is connected to the air cavity a provided inside the fixed frame (6). One end of the air inlet pipe (12) is connected to the air cavity a inside the fixed frame (6) through a connecting component, and the other end of the air inlet pipe (12) is connected to an external two-way air pump.

2. The precision measurement and positioning tool for wind turbine assembly according to claim 1, characterized in that: The connecting assembly includes a fixing seat (10) fixed on the side wall of the fixing frame (6), a limiting groove (30) is provided on the side of the fixing seat (10), a connecting block (11) is slidably provided in the limiting groove (30), the air inlet pipe (12) is connected to the connecting block (11) through a rotating joint, a plurality of connecting holes are provided inside the fixing seat (10), which are, from top to bottom, connecting hole one (21), connecting hole two (22), connecting hole three (23), connecting hole four (24) and connecting hole five (25), a plurality of air cavities are provided inside the fixing frame (6), and the plurality of air cavities are respectively connected to the corresponding connecting holes, and the connecting block (11) is respectively connected to the plurality of connecting holes through the plug-in assembly.

3. The precision measurement and positioning tool for wind turbine assembly according to claim 2, characterized in that: The plug-in assembly includes an active cavity (26) provided in the middle of the connecting block (11), a connecting pipe (28) is slidably installed in the active cavity (26), one end of the connecting pipe (28) is plugged into the connecting hole, and the other end of the connecting pipe (28) is connected to the air intake pipe (12) through the telescopic tube (27), a shift block (31) is fixed to the side wall of the connecting pipe (28), the end of the shift block (31) passes through the active groove (29) provided on the connecting block (11) and extends to the outside, and a spring (32) is fixed inside the active groove (29) for returning the shift block (31) to its original position.

4. The precision measurement and positioning tool for wind turbine assembly according to claim 1, characterized in that: Storage cavities (7) are provided on both sides of the fixing frame (6).

5. The precision measurement and positioning tool for wind turbine assembly according to claim 4, characterized in that: An air passage 1 (15) is provided inside the receiving cavity (7) and outside the accordion cover (8), and the air passage 1 (15) is communicated with the air cavity b provided inside the fixing frame (6).

6. The precision measurement and positioning tool for wind turbine assembly according to claim 1, characterized in that: An air duct three (19) is provided inside the accordion cover (8), an inner cavity is provided in the middle of the connecting frame (9), and an air outlet (20) is provided in the inner cavity toward the inner side of the connecting frame (9), one end of the air duct three (19) is communicated with the inner cavity of the connecting frame (9), and the other end of the air duct three (19) is communicated with the air cavity c provided inside the fixed frame (6).

7. The precision measurement and positioning tool for wind turbine assembly according to claim 1, characterized in that: The mounting plate (1) is provided with convex mounting grooves (3) on both sides, and a slide rail (4) is slidably provided in the mounting groove (3). The slide rail (4) and the mounting groove (3) are adapted to each other, and the fixing frame (6) is fixed in the middle of the top of the slide rail (4). The mounting plate (1) is symmetrically provided with through holes on both sides, and a limiting column (34) is movably inserted in the through holes. The middle side wall of the slide rail (4) is provided with a slot (33) that can be engaged with the limiting column (34), and a spring (35) for resetting the limiting column (34) is fixed on the side wall of the mounting plate (1).

8. The precision measurement and positioning tool for wind turbine assembly according to claim 7, characterized in that: A convex movable block (13) is fixed to the bottom of the connecting frame (9), and the movable block (13) is slidably arranged in a track groove (5) provided on the top of the slide rail (4). A ball (14) is rotatably mounted on the bottom end of the movable block (13).

9. The precision measurement and positioning tool for wind turbine assembly according to claim 8, characterized in that: A fixing block (17) is fixed in the middle of the track groove (5), and air outlet holes (18) are symmetrically provided on both sides of the fixing block (17).

10. The precision measurement and positioning tool for wind turbine assembly according to claim 2, characterized in that: A retaining ring (36) is provided in the air inlet hole inside the fixing seat (10), and the side of the retaining ring (36) away from the connecting block (11) is rotatably connected to a flap (40) through a torsion spring, and a connecting ring (37) is provided on the side of the retaining ring (36) close to the connecting ring (37), and a sleeve (38) is fixed in the middle of the side wall of the connecting ring (37), and the sleeve (38) is sealingly slidably provided in the middle of the retaining ring (36), and a spring three (39) is fixed between the connecting ring (37) and the retaining ring (36).

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