CN219902019U - Blade bolt auxiliary dismounting device and blade bolt dismounting system - Google Patents

Abstract

The utility model relates to the field of wind-heat blade assembly, and discloses a blade bolt auxiliary dismounting device and a blade bolt dismounting system. This supplementary dismounting device of blade bolt installs in the blade root, and after the bolt passed the bolt sleeve pipe was fixed in the blade root with fixing device in the one end of keeping away from the blade root on, utilized extracting tool to unscrew the bolt from the blade root one by one, this device simple structure to structural feature is obvious, can evenly spread the atress of single bolt to a plurality of bolts when dismantling the bolt, can effectively reduce the damage rate when the bolt is dismantled.

Description

Blade bolt auxiliary dismounting device and blade bolt dismounting system

Technical Field

The utility model relates to the field of assembly of lifting blades, in particular to an auxiliary dismounting device for blade bolts and a blade bolt dismounting system.

Background

When the wind field is taken out and replaced, the bolts at the root of the non-hoisted blade of the wind generating set are generally taken out and replaced after being loosened through pipe tongs and a hydraulic station, but the exposed size of the bolts at the root of the blade is long, so that the fastening moment is overlarge, the situation of bolt torsion breaking occurs, and the replacement difficulty is increased.

Disclosure of Invention

The utility model aims to solve the problem that a bolt at the root of a non-hoisted blade of a wind generating set is easy to break in the prior art, and provides an auxiliary dismounting device for the blade bolt.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a blade bolt auxiliary dismounting device, including a plurality of bolt bushings arranged at intervals from each other and a fixing clamp plate fixed to an end portion of the bolt bushing, wherein the fixing clamp plate is an arc plate and is mountable such that a plurality of bolts of a blade root portion respectively pass through the bolt bushings correspondingly, and a side of the fixing clamp plate facing away from the bolt bushings abuts against the blade root portion.

Preferably, the two ends of the bolt sleeve are respectively fixed with the fixing clamp plates, and each fixing clamp plate is correspondingly provided with a plurality of bolt holes aligned with the bolt sleeve, so that the bolts penetrate through the bolt sleeve and then extend out of the fixing clamp plates from the bolt holes.

Preferably, a plurality of the bolt holes are arranged in an arc shape, and the diameter of the arc-shaped array is matched with the diameter of the root of the blade.

Preferably, the blade bolt auxiliary dismounting device comprises 3-7 of said bolt bushings.

Preferably, the bolt sleeve is made of martensitic stainless steel.

Preferably, the radial width of the fixing clip is greater than the outer diameter of the bolt sleeve.

A second aspect of the present utility model provides a blade bolt removing system comprising the blade bolt auxiliary removing device described above and a plurality of nuts for a plurality of bolts screwed to the blade root.

Preferably, the nut assembling and disassembling device further comprises a pneumatic wrench for assembling and disassembling the nut.

Preferably, a hydraulic removal tool for removing the bolts from the blade root is also included.

Preferably, positioning means for positioning the fan blade in at least one direction are also included.

Through the technical scheme, when the bolts at the root parts of the blades are not lifted, the auxiliary dismounting device for the bolts of the blades is mounted at the root parts of the blades, after the bolts penetrate through the bolt sleeves and are fixed on the root parts of the blades by the dismounting device for the bolts of the blades at one end far away from the root parts of the blades, the bolts are screwed out from the root parts of the blades one by using the dismounting tool, and the device is simple in structure and obvious in structural characteristics, and can uniformly spread stress of a single bolt to a plurality of bolts when the bolts are dismounted, so that the damage rate of the bolts during dismounting can be effectively reduced.

Drawings

Fig. 1 is a schematic structural view of the present blade bolt removing apparatus.

Description of the reference numerals

1. Bolt sleeve 2, fixed clamping plate 3 and bolt hole

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the present utility model, unless otherwise specified, terms such as "upper, lower, left, and right" and "upper, lower, left, and right" are used generically to refer to the attached drawings; "inner and outer" means inner and outer relative to the contour of the respective parts themselves; "distal" and "proximal" refer to the distal and proximal relative to the contours of the components themselves.

The utility model provides a blade bolt auxiliary dismounting device, which comprises a plurality of bolt sleeves 1 and fixing clamping plates 2, wherein the bolt sleeves 1 are arranged at intervals, the fixing clamping plates 2 are arc-shaped plates, the fixing clamping plates 2 can be installed so that a plurality of bolts at the root of a blade respectively correspondingly pass through the bolt sleeves 1, and one sides of the fixing clamping plates 2, which are away from the bolt sleeves 1, are abutted against the root of the blade.

Wherein, when the bolts are disassembled, the exposed parts of the bolts at the root parts of the blades respectively pass through the bolt sleeves 1 of the auxiliary disassembling device for the bolts of the blades, wherein, each bolt sleeve is arranged on the fixed clamping plate 2, and the fixed clamping plate 2 is fixed to the end part of the bolt sleeve 1. The fixing clamp plate 2 has the function of integrating a plurality of the bolt sleeves 1, and has the functions of fixing and supporting the bolt sleeves 1 when the bolts at the root parts of the blades are disassembled, so that the bolt sleeves 1 are prevented from being broken. Meanwhile, the fixing clamp plate 2 is further used for fixing the auxiliary dismounting device of the blade bolt to the blade root after the bolt sleeve 1 is sleeved on the blade root bolt by the auxiliary fastening mechanism, so that the blade root bolt can be taken out along the extending direction of the bolt sleeve 1. The fixing clip 2 may be mounted to one or both ends of the bolt sleeve 1. When the fixing clamp plate 2 is mounted at one end of the bolt sleeve 1, the fixing clamp plate 2 is arranged at one end of the bolt sleeve 1 far away from the root of the blade. After the blade bolt passes through the bolt sleeve 1, the fastening device integrally fixes the auxiliary dismounting device for the blade bolt at the root of the blade under the cooperation of the fixing clamp plate 2. At this time, only one of the blade bolts is disassembled in each disassembly action, and the blade bolts around the disassembled blade bolt can be reinforced under the fixation of the bolt sleeve 1 and the fixing clamp plate 2, so that the purpose of reducing the moment is achieved.

Specifically, the curvature of the fixing clamp plate 2 of the auxiliary dismounting device for the blade bolt is the same as the curvature of the blade root base, further, after the fixing clamp plate 2 and the bolt sleeve 1 are assembled, a plurality of the bolt sleeves 1 are also arranged in an arc shape, and accordingly, the curvature of the arc-shaped bolt sleeve array and the curvature and the radius of the arc-shaped formed by arranging the bolts are equal, so that a plurality of the bolt sleeves 1 can be simultaneously mounted on corresponding bolts and each bolt is allowed to pass through the bolt sleeve 1. When a plurality of bolts respectively pass through a plurality of corresponding bolt sleeves 1 and are fixed through the fixed clamping plates 2, the stress of the single bolt can be uniformly spread on the plurality of bolts when the single bolt is disassembled, so that the stress of the single bolt is reduced, and the breakage rate of the bolt in the bolt disassembling process is further reduced.

The bolts are required to pass through the bolt sleeve 1 and the fixing clamp plate 2 respectively, so that in order to pass through the bolt sleeve 1 and the fixing clamp plate 2, a plurality of bolt holes 3 aligned with the bolt sleeve 1 are correspondingly formed in the fixing clamp plate 2 so as to allow the bolts to pass through the bolt sleeve 1 and then extend out of the fixing clamp plate 2 from the bolt holes 3.

Further, for improving the assembly accuracy of this supplementary dismounting device of blade bolt, prevent that bolt sleeve 2 and bolt from appearing not counterpointing the phenomenon, a plurality of bolt hole 3 are the arc and arrange, and the diameter of this arc array with the diameter looks adaptation of blade root.

In order to ensure that the moment of a single bolt is reduced, the portability of the device is ensured as much as possible, and the installation difficulty of the device is reduced, the blade bolt auxiliary dismounting device is integrated with 3-7 bolt sleeves 1.

Because the blade root bolt is generally higher in strength and high in occlusion degree with the blade, the auxiliary dismounting device for the blade bolt is higher in stress when the bolt is dismounted, so that the hardness of the device is improved, the production cost is reduced, and the device is made of martensitic stainless steel.

To ensure that the fixing clip 2 provides sufficient fixing support for the bolt sleeve 1, the radial width of the fixing clip 2 is greater than the outer diameter of the bolt sleeve 1.

Another aspect of the present utility model provides a blade bolt removing system comprising the blade bolt auxiliary removing device described above and a plurality of nuts for a plurality of bolts screwed to the blade root. Wherein the nut is used to fix the blade bolt auxiliary dismounting device to the blade root. When the blade bolt auxiliary dismounting device has two fixing clamp plates 2, the nut is fixed to the outside of the fixing clamp plate 2 away from the blade root; when the blade bolt auxiliary dismounting device has a fixing clamp plate 2, the nut is fixed to the outside of the fixing clamp plate 2 away from the blade root. The auxiliary dismounting device for the blade bolt is fixed to the root of the blade by utilizing the nut to be matched with the fixing clamp plate 2 for further reinforcement, and a fastening agent can be smeared on the inner thread surface of the nut.

When the blade bolt auxiliary dismounting device is mounted, the nut is screwed onto the bolt to press the fixing clamp plate 2, and the pressure between the nut and the fixing clamp plate 2 fixes the blade bolt auxiliary dismounting device to the blade root. Therefore, in order to facilitate the installation of the nuts, the blade bolt auxiliary dismounting device further comprises a pneumatic wrench.

In order to detach the bolts from the root parts of the blades, the system comprises a power device besides an auxiliary detaching device for the bolts of the blades. The power device is specifically a hydraulic dismounting tool.

To facilitate the mounting of the blade bolt assist removal device to the blade root, the blade bolt removal system further comprises positioning means for positioning the fan blade in at least one direction.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a plurality of simple variants of the technical proposal of the utility model can be carried out, comprising that each specific technical feature is combined in any suitable way, and in order to avoid unnecessary repetition, the utility model does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims (10)

1. The utility model provides a supplementary dismounting device of blade bolt, its characterized in that includes a plurality of bolt sleeve pipes (1) that separate each other and be fixed in fixed splint (2) of bolt sleeve pipe (1) tip, wherein fixed splint (2) are the arc to can install so that a plurality of bolts of blade root correspond respectively pass bolt sleeve pipe (1), just one side butt that deviates from of fixed splint (2) bolt sleeve pipe (1) in the blade root.

2. Blade bolt auxiliary dismounting device according to claim 1, characterized in that the fixing clamp plates (2) are fixed at both ends of the bolt sleeve (1), and that a plurality of bolt holes (3) aligned with the bolt sleeve (1) are correspondingly provided on each fixing clamp plate (2) to allow the bolts to extend out of the fixing clamp plates (2) from the bolt holes (3) after passing through the bolt sleeve (1).

3. Blade bolt auxiliary dismounting device according to claim 2, characterized in that a plurality of the bolt holes (3) are arranged in an arc shape, and that the diameter of the arc-shaped array is adapted to the diameter of the blade root.

4. Blade bolt auxiliary dismounting device according to claim 1, characterized in that it comprises 3-7 of said bolt bushings (1).

5. Blade bolt auxiliary dismounting device according to claim 1, characterized in that the material of the bolt sleeve (1) is martensitic stainless steel.

6. Blade bolt auxiliary dismounting device according to claim 1, characterized in that the radial width of the fixing clamp plate (2) is larger than the outer diameter of the bolt bushing (1).

7. A blade bolt removing system comprising the blade bolt auxiliary removing device according to any one of claims 1 to 6 and a plurality of nuts for a plurality of bolts screwed to the blade root.

8. The blade bolt removal system of claim 7, further comprising a pneumatic wrench for removing the nut.

9. The blade bolt removal system of claim 7, further comprising a hydraulic removal tool for removing the bolt from the blade root.

10. The blade bolt removal system of claim 7, further comprising a positioning device for positioning the fan blade in at least one direction.