A wind turbine blade root mounting structure

Abstract

The utility model discloses a wind driven generator blade root mounting structure, including base and its periphery side ring and have several groups of support components, and support component includes the support rod of rotation setting on the base and is rotationally arranged with the support seat for blade root bolt rod support along the support rod one end away from the base, and a plurality of locking pieces for connecting rod locking are rotationally arranged on the base, and the support component is detachably installed on the base through the connecting seat of rotationally arranged corresponding one end of the support rod. The mounting structure can effectively reduce the probability of the corresponding number of bolt rods on the blade root to shake or even stretch during hoisting, improve the position stability of the bolt rod on the blade root and the efficiency of subsequent butt joint, appropriately improve the installation efficiency, and also can effectively reduce the probability of the bolt rod to stretch or even fall off and deformation damage due to unnecessary collision process, improve the effect and use flexibility.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically to a wind turbine blade root mounting structure. Background Technology

[0002] Wind turbine blades are fixed to the generator hub via a connection structure at their root. Currently, the most common connection method is a bolted connection structure using either a pre-embedded flange or a post-embedded flange. This involves multiple bolts distributed at the blade root, which mate with the flange on the hub and are tightened with nuts. While this structure is widely used, during hoisting, the dozens or even hundreds of bolts at the blade root are prone to swaying or even expansion and contraction. This increases the difficulty of aligning with the bolt holes on the hub flange and the associated risks, reducing installation efficiency and increasing the probability of bolts falling off or even deforming and being damaged. Utility Model Content

[0003] The purpose of this utility model is to provide a wind turbine blade root mounting structure. This mounting structure can effectively reduce the probability of the corresponding number of bolts on the blade root swaying or even stretching during the hoisting process, improve the positional stability of the bolts at the blade root and the efficiency of subsequent connection, and appropriately improve the installation efficiency while also effectively reducing the probability of bolts stretching, falling off or deforming due to unnecessary collisions, thus improving the effect and flexibility of use.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A wind turbine blade root mounting structure includes a base and several sets of support components arranged around its periphery. The support components include a support rod rotatably mounted on the base and a support seat rotatably mounted on one end of the support rod away from the base for supporting the blade root bolt rod. Multiple sets of locking elements for locking the connecting rod are rotatably mounted on the base.

[0006] Preferably, the support assembly is detachably mounted on the base via a connecting seat rotatably provided at one end of the support rod.

[0007] Preferably, the support base is provided with a pad.

[0008] Preferably, a connecting frame is detachably installed on the base, and a through hole is opened in the middle of the connecting frame and multiple sets of spaced connecting rods are arranged around the periphery of the through hole.

[0009] Preferably, a rubber head can be detachably installed on the bolt rod, and the rubber head is shaped like a frustum.

[0010] Compared with the prior art, this utility model has the following advantages and effects:

[0011] This utility model relates to a wind turbine blade root mounting structure. The addition of a base and support components effectively reduces the probability of swaying or even expansion / contraction of the corresponding number of bolts at the blade root during hoisting. This improves the positional stability of the bolts at the blade root and the efficiency of subsequent connection. While appropriately increasing installation efficiency, it also effectively reduces the probability of bolt expansion / contraction, detachment, or deformation damage due to unnecessary collisions. Furthermore, during connection, once the bolts are aligned with the bolt holes on the flange in the hub and inserted to an appropriate depth, multiple sets of locking components can be rotated to disassemble and remove the base and several sets of support components, ensuring the bolts are fully inserted into the bolt holes. The optimal insertion depth is used to complete the installation and fixing process between the blade and the hub with the nut. The installation structure formed by the disassembled base and its several sets of support components can be installed and fixed on the hub. Specifically, the support can be abutted against the nut on the bolt rod or the corresponding redundant length of the bolt rod extending behind the nut. Combined with the above operations, the installation structure formed by the base and its several sets of support components is installed and fixed in the corresponding cavity on the hub. Under the abutment of this installation structure, the positional stability of the corresponding nut on the bolt rod and the corresponding locking effect can be effectively improved, reducing the possibility of the nut shifting on the bolt rod and loosening during subsequent use, and improving the connection between the blade and the hub. The system ensures stability and allows for flexible assembly and disassembly as needed during routine inspections and maintenance. This further enhances the effectiveness and flexibility of the installation structure formed by the base and its supporting components. Furthermore, the ring-shaped structure formed in the center of the base provides structural strength without hindering operators from connecting wires or passing tools between the blades and the hub. Ropes can be tied to the connection gaps between the base and its supporting components. When tying ropes around the base, a certain length of redundant rope end can be reserved along the center of the cavity formed in the center of the base. During subsequent hoisting, operators can adjust the rope at the corresponding connection points inside the hub. By adjusting the rope end appropriately, and considering the length of the support rod and the installation method of the base and its various support components, the locking mechanism ensures the installation stability of the base and its various support components at the blade root. Simultaneously, the force direction of the base, support rod, and support seat during rope pulling also ensures the support stability of the bolt rod, further improving the stability and efficiency of moving and connecting the blade root towards the hub. After connection, the rope can be untied. This operation method further enhances the operational flexibility of connecting the blade and hub, as well as the flexibility and applicability of this wind turbine blade root installation structure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a wind turbine blade root mounting structure according to an embodiment of the present invention.

[0013] Figure 2-3 This is a partially enlarged view of a wind turbine blade root mounting structure according to an embodiment of this utility model.

[0014] Figure numbers: blade 100, bolt rod 101, hexagonal slot hole 1010, base 1, locking part 10, slide groove 11, second slide groove 12, support assembly 2, support rod 21, support seat 22, pad 221, pin 23, snap ring 230, connecting seat 3, connecting frame 4, through hole 41, connecting rod 42, rubber head 5, connecting strip 50. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0016] See Figure 1-3 This embodiment relates to a root mounting structure for a wind turbine blade 100, including a base 1 and several sets of support components 2 arranged around its periphery. The support components 2 include a support rod 21 rotatably mounted on the base 1 and a support seat 22 rotatably mounted along one end of the support rod 21 away from the base 1 for supporting the root bolt rod 101 of the blade 100. Multiple sets of locking members 10 for locking the connecting rod 42 are rotatably mounted on the base 1.

[0017] Specifically in this embodiment, such as Figure 1 The overall structural design of the wind turbine blade 100 root mounting structure shown herein allows for the connection of several sets of surrounding bolt rods 101 at the root of the blade 100, and can be combined with... Figure 2 and Figure 3 The installation process of the base 1 and its supporting components 2 is shown. The number of supporting components 2 is equal to the number of bolts 101 at the root of the blade 100. Combined with the structural design of the support seat 22 adapting to the bolts 101, the corresponding spacing allows the support seat 22 to fit snugly against the outside of the bolts 101. Thus, the base 1, supported by the connecting rod 42, is located in the center of the cavity formed by several sets of bolts 101 at the root of the blade 100. The length of the connecting rod 42 is set so that the base 1 and the support seat 22 are in two different planes. Furthermore, to ensure the effectiveness of the supporting components 2, the distance between the two planes should not be too large. Figure 2Taking the installation method as an example, when the base 1 is pulled outward from the center of the cavity at its root in a direction away from the blade 100, the rotation of the support rod 21 allows the support seat 22 to support and abut the bolt rod 101. At this time, the bolt rod 101 can be stabilized by a certain tension at the corresponding installation position at the root of the blade 100 under the support of the support seat 22. At the same time, the locking member 10 corresponding to the position of the support rod 21 on the base 1 is rotated. The locking member 10 can be screwed in and out through the threaded hole opened at the corresponding position of the base 1 to lock the support rod 21. The number of locking members 10 is set to ensure that the base 1 and the support assembly 2 are stably supported in the cavity at the root of the blade 100. After the base 1 and the support assembly 2 are initially installed at the root of the blade 100, the subsequent hoisting and docking process can be carried out on the hub to fit the bolt rod 101 in several sets of bolt holes. The addition of the base 1 and support assembly 2 to the root mounting structure of this wind turbine blade 100 effectively reduces the probability of swaying or even expansion / contraction of the corresponding number of bolts 101 at the root of the blade 100 during hoisting. This improves the positional stability of the bolts 101 at the root of the blade 100 and the efficiency of subsequent docking. While appropriately increasing installation efficiency, it also effectively reduces the probability of bolts 101 expanding / contracting, falling off, or deforming due to unnecessary collisions. Furthermore, during docking, once the bolts 101 are aligned with the bolt holes on the flange in the hub and inserted to an appropriate depth, multiple sets of locking parts 10 can be rotated to disassemble and remove the base 1 and several sets of support assemblies 2. This allows the bolts 101 to reach the optimal insertion depth in the bolt holes, enabling the connection of the nuts to complete the installation and fixing process between the blade 100 and the hub. The installation structure formed by the disassembled base 1 and several sets of support assemblies 2 can then be installed and fixed on the hub. The support 22 can abut against the nut on the bolt rod 101 or the corresponding redundant length of the bolt rod 101 extending behind the nut. Combined with the above operations, the mounting structure formed by the base 1 and its several sets of support components 2 is installed and fixed in the corresponding cavity on the hub. This mounting structure effectively improves the positional stability and locking effect of the nut on the bolt rod 101, reducing the possibility of the nut shifting on the bolt rod 101 and loosening during subsequent use. This improves the connection stability between the blade 100 and the hub. Furthermore, it can be flexibly disassembled and reassembled according to operational needs during routine inspections and maintenance, further enhancing the effectiveness and flexibility of the mounting structure formed by the base 1 and its several sets of support components 2. In addition, the ring-shaped structure formed in the center of the base 1 provides structural strength without hindering operators from connecting wiring or passing tools between the blade 100 and the hub.Furthermore, ropes can be tied to the connection gap formed by the base 1 and several sets of support components 2 on it. When the rope is tied around the base 1, a certain redundant length of rope end can be reserved along the center of the cavity formed in the middle of the base 1. During subsequent hoisting, the operator can adjust the rope end appropriately at the corresponding connection point inside the hub. Combined with the length setting of the support rod 21 and the corresponding installation method of the base 1 and several sets of support components 2 on it, the locking member 10 can ensure the installation structure formed by the base 1 and several sets of support components 2 on it. The installation stability at the root of blade 100 is ensured, and the force direction of base 1, support rod 21, and support seat 22 during rope pulling also guarantees the support stability of bolt rod 101. This further improves the stability and efficiency of moving and docking the root of blade 100 towards the hub. After docking, the rope can be untied. This operation method further enhances the operational flexibility of docking blade 100 and hub, as well as the flexibility and applicability of this wind turbine blade 100 root installation structure.

[0018] The support component 2 is detachably mounted on the base 1 via a connecting seat 3 rotatably disposed at one end of the support rod 21. Specifically, it can be combined with... Figure 3 As shown, the support component 2 can be detachably connected by sliding within the corresponding groove 11 on the base 1 via a protruding plate at the bottom of the connecting seat 3. This further improves the structural detachability and disassembly flexibility of this installation structure, facilitating the replacement of the support component 2. Furthermore, the connecting seats 3 and support base 22 at both ends of the support rod 21 are also detachably connected by rotating pins 23 and their corresponding retaining springs 230, facilitating the inspection, maintenance, and replacement of components in this installation structure, thus improving its practicality. Additionally, during actual installation, this installation structure can be adjusted based on the length of the support rod 21 and the direction of the groove 11. Figure 1 The installation process shown in the diagram ensures that when the rope tied to the base 1 is pulled and the base 1 is subjected to force, the connecting seat 3 and its supporting components 2 will not slip off the base 1, thus improving the stability of use.

[0019] The support base 22 is provided with a pad 221. The pad 221 can be attached to the corresponding wall surface of the support base 22 according to the usage requirements. The pad 221 can be made of flexible anti-slip materials such as rubber, which can further improve the friction between the support base 22 and the bolt rod 101 when they are pressed together, and play a certain anti-slip and wear-resistant role, thereby improving the stability of this installation structure.

[0020] A connecting frame 4 is detachably mounted on the base 1. The connecting frame 4 has a through hole 41 in the middle and multiple sets of spaced connecting rods 42 arranged around the periphery of the through hole 41. Figure 1-3The connecting frame 4 shown is designed to allow for a detachable connection by sliding multiple sets of connecting rods 42 on the base 1 within the second sliding grooves 12 of the corresponding connecting rods 42. The positions of the second sliding grooves 12 and the locking member 10 are staggered. Combined with the sliding direction on the base 1 and the arrangement of the second sliding grooves 12, ropes can be tied to the base 1 and the multiple sets of connecting rods 42 on the connecting frame 4 according to usage requirements. Finally, the rope end is threaded through the through hole 41 to complete the entire binding process. During the subsequent installation process, the rope can be concentrated on the through hole 41 in the middle of the connecting frame 4 to concentrate the force, thereby further improving the effect and support stability of this installation structure at the root of the blade 100 under the corresponding force. Moreover, the multiple sets of through slots formed by the multiple sets of support rods 21 on the connecting frame 4 locking on the base 1, combined with the detachable connection process of the connecting frame 4 on the base 1, do not affect the operator's operation of connecting lines or passing tools between the blade 100 and the hub, further improving the functional diversity and usage flexibility of this wind turbine blade 100 root installation structure.

[0021] A rubber head 5 can also be detachably installed on the bolt rod 101, and the rubber head 5 is shaped like a frustum. See details below. Figure 3 As shown, in conjunction with the structural design of the bolt rod 101 commonly used for connecting the blade 100 and the hub, the rubber head 5 can be adapted to be inserted into the hexagonal slot 1010 opened at the corresponding end of the bolt rod 101 through the connecting strip 50 provided thereon for a detachable connection process. The addition of the rubber head 5, combined with its frustum-shaped structure, can further improve the operational efficiency of the bolt rod 101 being inserted into the bolt hole. Moreover, the rubber head 5 can also play a certain anti-collision role, effectively reducing the degree of deformation of the bolt rod 101 head caused by collision and the adverse effects on the subsequent connection process. Furthermore, the detachable connection method of the rubber head 5 does not affect the subsequent disassembly and assembly process of the bolt rod 101 at the corresponding position at the root of the blade 100, meeting different installation requirements and usage needs.

[0022] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A root mounting structure for wind turbine blades, characterized in that: It includes a base and several sets of support components surrounding it. The support components include a support rod rotatably mounted on the base and a support seat rotatably mounted on one end of the support rod away from the base for supporting the bolt rod at the root of the blade. Multiple sets of locking elements for locking the connecting rod are rotatably mounted on the base.

2. The wind turbine blade root mounting structure according to claim 1, characterized in that: The support assembly is detachably mounted on the base via a connecting seat that is rotatably provided at one end of the support rod.

3. The wind turbine blade root mounting structure according to claim 1, characterized in that: A pad is provided on the support base.

4. The wind turbine blade root mounting structure according to claim 1, characterized in that: The base is detachably mounted with a connecting frame. The connecting frame has a through hole in the middle and multiple sets of spaced connecting rods arranged around the through hole.

5. The wind turbine blade root mounting structure according to claim 1, characterized in that: A rubber head can also be detachably installed on the bolt rod, and the rubber head is shaped like a frustum.

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