Riveting torsion measuring device for central disc of wind wheel

Abstract

The utility model belongs to the technical field of wind wheel middle disc riveting torsion measurement, and discloses a wind wheel middle disc riveting torsion measurement device which comprises a base and a supporting frame, a torsion measurement unit is arranged on the base, a fixing part used for fixing a middle disc is arranged on the torsion measurement unit, and a fixing assembly capable of moving up and down is arranged on the supporting frame. The shaft sleeve on the middle disc can be detachably connected with the fixing assembly through a fixing bolt, the supporting frame is further provided with a power output module, the power output module is used for applying torsion to the fixing assembly and applying torsion to the shaft sleeve through the fixing assembly, and the torsion borne by the shaft sleeve can be fed back through the torsion measuring unit. Torsion is applied to the shaft sleeve through the power output module, the relative displacement of the shaft sleeve and the middle discs is observed, the connection reliability of the shaft sleeve and the middle discs can be judged, the torsion borne by the shaft sleeve can be fed back through the torsion measuring unit, the specific torsion value is displayed, it is guaranteed that the torsion borne by all the middle discs is the same during measurement, and control by operators is facilitated.

Description

Technical Field

[0001] This application belongs to the field of wind turbine disc riveting torque measurement technology, specifically a wind turbine disc riveting torque measurement device. Background Technology

[0002] Centrifugal fans are common fluid machinery widely used in HVAC systems, industrial gas handling, and air transport. The impeller is a key component of a centrifugal fan, its main function being to draw gas in through the inlet and accelerate it through rotation, ultimately outputting it at high speed and pressure. In the impeller structure, the central disc is a crucial component connecting the blades and the main shaft. The central disc not only provides mechanical support but also directly impacts aerodynamic performance. Its design must balance strength and lightweight, typically employing high-strength materials such as aluminum alloys or composite materials to meet the strength requirements of the fan under high speeds and heavy loads.

[0003] In existing impellers, the disc and the bushing are generally connected by riveting, such as the air conditioner fan impeller disclosed in Chinese patent CN27772525Y. In order to ensure the reliability of the connection between the disc and the bushing, it is generally necessary to measure the torque of the disc and the bushing after riveting. In the existing technology, there is no special device for measuring the torque of the disc and bushing riveting. Utility Model Content

[0004] The purpose of this application is to provide a torque measuring device for the riveting of a wind turbine mid-disk. This measuring device uses a torque measuring unit to fix the mid-disk, and the bushing on the mid-disk is detachably connected to the fixing component by fixing bolts. Torque is applied to the bushing through a power output module, and the relative displacement between the bushing and the mid-disk is observed. This allows the reliability of the connection between the bushing and the mid-disk to be determined. Furthermore, the torque on the bushing can be fed back through the torque measuring unit to display the specific torque value, ensuring that the torque on each mid-disk is the same during measurement, which is convenient for operators to control.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A wind turbine rotor disc riveting torque measuring device includes a base and a support frame connected to the base. The base is provided with a torque measuring unit, and the torque measuring unit is provided with a fixing part for fixing the rotor disc. The support frame is provided with a vertically movable fixing component, which is located above the rotor disc. The bushing on the rotor disc is detachably connected to the fixing component via fixing bolts. The support frame is also provided with a power output module, which is used to apply torque to the fixing component and apply torque to the bushing through the fixing component. The torque on the bushing disc can be fed back through the torque measuring unit.

[0007] Preferably, the torque measuring unit includes a torque tester and a fixed plate installed on the input end of the torque tester. The fixed plate is provided with at least two positioning pins for fixing the middle plate, and the positioning pins are fixing parts.

[0008] Preferably, the fixing component includes a fixing column, a sleeve disposed at the bottom of the fixing column, a limiting part at the top of the fixing column, the fixing column being slidably connected to the support frame in a vertically movable manner and located above the middle plate, the sleeve matching the bushing, and a notch for the fixing bolt to pass through on one side of the sleeve, and a horizontally arranged connecting rod on the fixing column, the power output module applying torque to the fixing column by pushing the connecting rod.

[0009] Preferably, the power output module includes a push cylinder, which is horizontally mounted on the support frame, and the power output end of the push cylinder is matched with the position of the connecting rod.

[0010] Preferably, a baffle is provided on the side of the support frame away from the push cylinder, the baffle is arranged opposite to the push cylinder, and the connecting rod is located between the baffle and the push cylinder.

[0011] Preferably, the power output module further includes a pressure regulating valve and a manual valve mounted on the support frame. The input end of the pressure regulating valve is connected to an external air supply device, and the output end of the pressure regulating valve is connected to the manual valve. The manual valve is provided with a first output pipe and a second output pipe. Both the first output pipe and the second output pipe are connected to the push cylinder and are used to control the extension and retraction of the power output part of the push cylinder.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] This application uses a torque measurement unit to fix the middle plate, and the bushing on the middle plate is detachably connected to the fixing component by fixing bolts. The torque is applied to the bushing through the power output module, and the relative displacement between the bushing and the middle plate is observed. This allows the reliability of the connection between the bushing and the middle plate to be determined. Furthermore, the torque on the bushing can be fed back through the torque measurement unit and the specific torque value can be displayed, ensuring that the torque on each middle plate is the same during measurement, which is convenient for operators to control. Attached Figure Description

[0014] Figure 1 This is a perspective view of the wind turbine disc riveting torque measuring device of Embodiment 1;

[0015] Figure 2 This is a front view of the wind turbine disc riveting torque measuring device of Embodiment 1;

[0016] Figure 3 This is a side view of the wind turbine disc riveting torque measuring device of Embodiment 1;

[0017] Figure 4This is a top view of the wind turbine disc riveting torque measuring device of Embodiment 1;

[0018] Figure 5 This is a schematic diagram of the structure of the middle disk of the wind turbine middle disk riveting torque measuring device in Example 1;

[0019] Figure 6 This is a perspective view of the wind turbine center plate riveting torque measuring device of Embodiment 1, including the center plate.

[0020] The labels for each item are as follows:

[0021] Base 1; Support frame 2; Torque measuring unit 11; Fixing component 21; Power output module 22; Baffle 23; Torque tester 111; Fixing plate 112; Fixing column 211; Sleeve 212; Limiting part 213; Notch 214; Connecting rod 215; Push cylinder 221; Hand valve 223; Pressure regulating valve 222; Positioning pin 1121; Second output pipe 2231; First output pipe 2232; Wind wheel disc A; Bushing B; Fixing bolt C; Adjusting hole D; Through hole E; First line a; Second line b. Detailed Implementation

[0022] The technical solutions of 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 application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] Example 1

[0024] refer to Figures 1-6 A wind turbine rotor disc riveting torque measuring device includes a base 1 and a support frame 2 connected to the base 1. The base 1 is provided with a torque measuring unit 11, which is provided with a fixing part for fixing the rotor disc A. The support frame 2 is provided with a fixing component 21 that can move up and down. The fixing component 21 is located above the rotor disc A. The bushing B on the rotor disc A can be detachably connected to the fixing component 21 by fixing bolts C. The support frame 2 is also provided with a power output module 22, which is used to apply torque to the fixing component 21 and apply torque to the bushing B through the fixing component 21. The torque on the bushing B can be fed back through the torque measuring unit 11.

[0025] It should be noted that the wind turbine's central plate A includes the central plate A and the bushing B riveted to the central plate A. The bushing B is equipped with a fixing bolt C, and the central plate A is also equipped with an adjustment hole D and multiple through holes E.

[0026] In a preferred embodiment, in order to more intuitively observe whether there is relative displacement between the middle plate A and the bushing B during the test, the operator can also add marks on the bushing B and the middle plate A before the test. Specifically, a vertical first line a is drawn on the bushing B using an erasable pen, and a second line b is drawn on the middle plate A that matches the position of the first line a.

[0027] In this design, the operator mounts the middle plate A onto the fixed part with the bushing B on top, and then connects it to the fixed assembly 21 via fixing bolts C. Torque is applied to the fixed assembly 21 via the power output module 22, thereby applying torque to the bushing B. The torque applied to the bushing B is fed back by the torque measuring unit 11, which displays the specific torque value to ensure that the torque applied to each bushing B is the same. After testing, in the preferred embodiment, the reliability of the connection between the middle plate A and the bushing B is determined by comparing the positions of the first line a and the second line b. This method facilitates the measurement of the riveting reliability between the middle plate A and the bushing B.

[0028] It should also be noted that the torque applied to the fixing component 21 described in this embodiment is actually a force that provides rotation to the fixing component 21. In actual measurement, if the riveting between the middle plate A and the bushing B is stable, the fixing component 21 will not rotate. Therefore, the rotation described here is only the action applied during measurement, and does not necessarily occur during the measurement process.

[0029] In this embodiment, the torque measuring unit 11 includes a torque tester 111 and a fixed plate 112 mounted on the input end of the torque tester 111. The fixed plate 112 is provided with at least two positioning pins 1121 for fixing the middle plate A. The positioning pins 1121 are fixing parts.

[0030] Implicitly, the torque tester 111 includes a display and a housing electrically connected to the display. A sensing module is provided inside the housing, and a polygonal groove is provided on the top of the sensing module. The polygonal groove is the input end of the torque tester 111. A protrusion matching the polygonal groove is provided on the bottom of the fixed plate 112. The fixed plate 112 is mounted on the input end of the torque tester 111 through the protrusion.

[0031] Specifically, the torque tester 111 is existing technology, and its specific structure can be found in the technical solution disclosed in Chinese Patent CN113607324A. Therefore, the specific structure of the torque tester 111 will not be described in detail in this embodiment.

[0032] More specifically, the middle plate A is fixed to the corresponding positioning pin 1121 through the adjustment hole D and the through hole E to restrict the movement of the middle plate A. Therefore, when the power output module 22 applies torque to the bushing B, the force will be transmitted to the fixed plate 112 through the middle plate A, and then to the sensing module through the fixed plate 112, thereby displaying the specific torque value on the display.

[0033] In this embodiment, the fixing component 21 includes a fixing post 211 and a sleeve 212 disposed at the bottom of the fixing post 211. The top of the fixing post 211 is provided with a limiting part 213. The fixing post 211 is slidably connected to the support frame 2 in a way that allows it to move up and down and is located above the middle plate A. The sleeve 212 matches the bushing B, and a notch 214 for the fixing bolt C to pass through is provided on one side of the sleeve 212. The fixing post 211 is also provided with a horizontally arranged connecting rod 215. The power output module 22 applies torque to the fixing post 211 by pushing the connecting rod 215.

[0034] In practical applications, when installing the middle plate A, the operator needs to manually lift the fixing column 211. After fixing the middle plate A, the fixing column 211 can move downwards under its own weight and fit onto the bushing B through the sleeve 212, encasing the entire bushing B. The operator then tightens the bolts on one side of the bushing B to fix the bushing B onto the sleeve 212. Subsequently, the power output module 22 only needs to push the connecting rod 215 to provide rotational force to the fixing column 211, applying torque to the bushing B. This connection method is not only simple and reliable but also easy to disassemble.

[0035] Furthermore, the power output module 22 includes a push cylinder 221, which is horizontally mounted on the support frame 2, and the power output end of the push cylinder 221 is matched with the position of the connecting rod 215.

[0036] During measurement, an external air source is supplied to the push cylinder 221, causing the power output end of the push cylinder 221 to extend until the power output end of the push cylinder 221 contacts the connecting rod 215, and continues to push the connecting rod 215, thereby driving the fixed column 211 to rotate and applying torque to the bushing B.

[0037] Preferably, a baffle 23 is provided on the side of the support frame 2 away from the push cylinder 221. The baffle 23 is arranged opposite to the push cylinder 221, and the connecting rod 215 is located between the baffle 23 and the push cylinder 221.

[0038] Specifically, the baffle 23 ensures safety during measurement. If the connection between the middle plate A and the bushing B is unreliable, specifically, if the middle plate A and the bushing B do not undergo relative displacement under the applied torque, but the middle plate A and the bushing B separate under the continuously applied torque, the applied torque may cause the fixed column 211 to drive the connecting rod 215 to rotate. The baffle 23 can restrict the rotation of the connecting rod 215 to avoid injuring the operator.

[0039] Furthermore, the power output module 22 also includes a pressure regulating valve 222 and a manual valve 223 mounted on the support frame 2. The input end of the pressure regulating valve 222 is connected to an external air supply device, and the output end of the pressure regulating valve 222 is connected to the manual valve 223. The manual valve 223 is provided with a first output pipe 2232 and a second output pipe 2231. Both the first output pipe 2232 and the second output pipe 2231 are connected to the push cylinder 221 and are used to control the extension and retraction of the power output part of the push cylinder 221.

[0040] In practical applications, the input air pressure can be adjusted via the pressure regulating valve 222. During testing, the operator manually turns the valve 223 to connect the second output pipe 2231 to the pressure regulating valve 222. The external air supply device delivers gas to the push cylinder 221, causing the power output end of the push cylinder 221 to extend. After measurement, the operator manually turns the valve 223 to connect the first output pipe 2232 to the pressure regulating valve 222. The external air supply device delivers gas to the push cylinder 221, causing the power output end of the push cylinder 221 to retract, returning to its initial state. The specific connection method between the first output pipe 2232, the second output pipe 2231, and the pressure regulating valve can use a three-way valve. It should also be noted that both the pressure regulating valve 222 and the manual valve 223 are existing technologies; therefore, their specific structures will not be described in detail in this embodiment.

[0041] The working principle of this device is as follows:

[0042] The operator first marks the first line a and the second line b on the middle plate A and the bushing B. Then, the middle plate A is installed on the fixed plate 112 with the bushing B facing upwards, and the adjusting hole D and the through hole E are matched with the corresponding positioning pins 1121 to restrict the movement of the middle plate A. Subsequently, the bushing B on the middle plate A is connected to the sleeve 212 by the fixing bolt C to complete the installation. The operator uses the pressure regulating valve 222 to adjust the input air pressure and operates the hand valve 223 to connect the second output pipe 2231 with the pressure regulating valve 222. The external air source delivery equipment delivers the gas to the push... The cylinder 221 is pushed out, and the power output end of the cylinder 221 is pushed out until the power output end of the cylinder 221 contacts the connecting rod 215, and pushes the connecting rod 215 to apply torque to the bushing B. The torque is converted by the sensor module and the specific torque value is displayed on the display. After the torque value reaches the preset value, the operator drives the cylinder 221 to reset through the hand valve 223 and separates the middle plate A and bushing B from the device. The positions of the first line a and the second line b are observed to determine the reliability of the riveting of the middle plate A and bushing B.

[0043] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements or modifications can be made without departing from the principle of this application, and these improvements or modifications should also be considered within the scope of protection of this application.

Claims

1. A device for measuring the riveting torque of a wind turbine rotor disc, characterized in that, The device includes a base and a support frame connected to the base. The base is equipped with a torque measuring unit, which has a fixing part for fixing the middle plate. The support frame has a vertically movable fixing component located above the middle plate. A bushing on the middle plate can be detachably connected to the fixing component via fixing bolts. The support frame also has a power output module for applying torque to the fixing component and applying torque to the bushing through the fixing component. The torque applied to the bushing can be fed back through the torque measuring unit.

2. The wind turbine disc riveting torque measuring device according to claim 1, characterized in that, The torque measuring unit includes a torque tester and a fixed plate installed on the input end of the torque tester. The fixed plate is provided with at least two positioning pins for fixing the middle plate, and the positioning pins are the fixing parts.

3. The wind turbine disc riveting torque measuring device according to claim 1, characterized in that, The fixing component includes a fixing post and a sleeve disposed at the bottom of the fixing post. The top of the fixing post is provided with a limiting part. The fixing post is slidably connected to the support frame in a vertically movable manner and is located above the middle plate. The sleeve matches the bushing, and a notch is provided on one side of the sleeve for the fixing bolt to pass through. The fixing post is also provided with a horizontally arranged connecting rod. The power output module applies torque to the fixing post by pushing the connecting rod.

4. The wind turbine disc riveting torque measuring device according to claim 3, characterized in that, The power output module includes a push cylinder, which is horizontally mounted on the support frame, and the power output end of the push cylinder is matched with the position of the connecting rod.

5. The wind turbine disc riveting torque measuring device according to claim 4, characterized in that, The support frame is provided with a baffle on the side away from the push cylinder. The baffle is arranged opposite to the push cylinder, and the connecting rod is located between the baffle and the push cylinder.

6. The wind turbine disc riveting torque measuring device according to claim 4, characterized in that, The power output module also includes a pressure regulating valve and a manual valve installed on the support frame. The input end of the pressure regulating valve is connected to an external air supply device, and the output end of the pressure regulating valve is connected to the manual valve. The manual valve is provided with a first output pipe and a second output pipe. Both the first output pipe and the second output pipe are connected to the push cylinder and are used to control the extension and retraction of the power output part of the push cylinder.

Images