Equipment for preventing wind power blade cloth layer from sliding down

Abstract

The utility model relates to the technical field of wind power blade manufacturing, in particular to a device for preventing a wind power blade cloth layer from sliding down, which comprises an annular bearing, a clamping component is arranged in the circumferential direction of a circular ring of the annular bearing, and the clamping component is used for clamping the front edge and the rear edge of a die and the cloth layer in an inner cavity of the die and preventing the cloth layer from sliding down in the laying process. The clamping assembly comprises a pneumatic supporting leg and an axial supporting plate connected with the output end of the pneumatic supporting leg, and the axial supporting plate is driven by the pneumatic supporting leg to stretch out and draw back and then abuts against a cloth layer in an inner cavity of the mold. And meanwhile, adaptive adjustment and positioning can be performed according to the sizes of different blades to prevent the cloth layer from sliding down, the pouring quality of the prefabricated part cloth layer and the shell cloth layer is improved, and the occurrence rate of wrinkles, cloth layer sliding down and other problems is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade manufacturing, in particular to a device for preventing a wind turbine blade cloth layer from sliding down. Background Art

[0002] The manufacturing of wind turbine blades needs to be completed in the blade shell mold. One of the manufacturing steps is to lay the fiberglass cloth in the blade shell mold. The fiberglass cloth generally needs to be laid from the root of the wind turbine blade, that is, from the root of the blade shell mold. Lay the fiberglass cloth in the blade mold, and then lay dozens of layers of fiberglass cloth in descending order from the root to the tip of the blade. Place a beam in the middle to shape the "spine" of the blade. Lay balsa wood together with PVC or PET foam at different positions inside the blade, and then lay UD cloth on the trailing edge of the mold for reinforcement. Fix the bolt sleeve at the root of the blade to facilitate the subsequent installation of the wind turbine. Then continue to lay descending layers of fiberglass cloth of the same layer as before.

[0003] During the laying process of the cloth layers of the blade shell and the prefabricated blade root parts, workers need to use cotton thread and spray glue to fix the cloth layers to slide down. However, there are too many cloth layers at the blade roots of these two parts, and excessive spray glue leads to poor wetting of the cloth layers. Improper use of cotton thread leads to overhead and stratification of the cloth layers. The cloth layers cannot be flattened, resulting in frequent wrinkles. In the prior art, such as application number 201921044144.1, a positioning tool for laying fiberglass cloth for wind turbine blades enables the fiberglass cloth to always fit the positioning plate during the laying process, avoiding the occurrence of laying misalignment and improving the production efficiency of the blades. Although the cloth layers can be positioned, the positioning tool is fixed in size and cannot be adaptively adjusted according to different blade sizes to prevent the cloth layers from sliding down. Utility Model Content

[0004] In order to solve the above technical problems, an embodiment of the utility model provides a device for preventing the cloth layer of a wind turbine blade from sliding down, which has achieved the purpose of reducing cloth layer wrinkles caused by human factors during laying, and cloth layer sliding down caused by cutting cotton thread when laying auxiliary materials. At the same time, the positioning can be adaptively adjusted according to different blade sizes to prevent the cloth layer from sliding down, thereby improving the injection quality of the prefabricated cloth layer and the shell cloth layer, and reducing the incidence of problems such as wrinkles and cloth layer sliding down.

[0005] This is achieved through the following technical solutions:

[0006] A device for preventing cloth layers of wind turbine blades from sliding down comprises an annular bearing. A clamping assembly is arranged in the circumferential direction of the annular bearing. The clamping assembly is used to clamp the cloth layers at the front and rear edges of a mold and in an inner cavity of the mold to prevent the cloth layers from sliding down during the laminating process. The clamping assembly comprises a pneumatic support leg and an axial support plate connected to the output end of the pneumatic support leg. The axial support plate is driven to extend and retract by the pneumatic support leg and abuts against the cloth layer in the inner cavity of the mold.

[0007] Further preferably, the clamping assembly also includes a guide rail and an axial clamping force arm slidably connected to the guide rail, and the axial clamping force arm can adjust the axial length of the clamping tooling after sliding, so as to clamp the front and rear edges of the mold.

[0008] Further preferably, a rail cover is slidably connected to the guide rail, the axial clamping force arm is connected to the rail cover, and the rail cover is provided with a locking pin for locking the rail cover and the guide rail.

[0009] Further preferably, a chord-wise positioning member is provided on the annular bearing between the two clamping assemblies. The chord-wise positioning member includes a pneumatic support leg and a chord-wise support plate connected to the output end of the pneumatic support leg, so as to maintain the chord-wise stability of the device during use.

[0010] Further preferably, the pneumatic outrigger includes an outer shell, a piston, a piston rod and a locking pin. The piston rod is connected to the piston and installed in the outer shell of the pneumatic outrigger. The piston rod and the outer shell have holes for inserting both ends of the locking pin. The locking pin is installed between the piston rod and the outer shell to lock the piston rod after extension and retraction.

[0011] Further preferably, a positioning laser is provided on the pneumatic leg facing the inner cavity of the mold for detecting the cloth layer below.

[0012] Beneficial effects of the utility model:

[0013] 1) The utility model reduces the wrinkles of the cloth layer caused by human factors during laying, and the sliding of the cloth layer caused by cutting the cotton thread when laying auxiliary materials. At the same time, the positioning can be adaptively adjusted according to different blade sizes to prevent the cloth layer from sliding, thereby improving the infusion quality of the prefabricated cloth layer and the shell cloth layer, and reducing the incidence of wrinkles, cloth layer sliding and other problems.

[0014] 2) The utility model eliminates the cotton thread to fix the front and rear edge cloth layers of the blade root section, avoiding the misjudgment of foreign body defects caused by the use of cotton thread; when the vacuum is applied, the cotton thread is not cut short, resulting in the cloth layer being suspended and layered. It can also avoid the wrinkles of the cloth layer caused by too many layers of the blade root; solve the problem of cutting the flanging cloth, and at the same time, avoid excessive grinding of the blade root parting surface, damage to the mold and reduce the amount of infusion resin.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0017] Figure 1The utility model is a structural schematic diagram of a device for preventing the cloth layer of a wind turbine blade from sliding down.

[0018] Figure 2 It is a top view of the guide slide rail of the utility model and a schematic diagram of the positioning laser.

[0019] Figure 3 It is a structural schematic diagram of the pneumatic outrigger in the utility model.

[0020] 1-annular bearing, 2-front and rear edges of the mold, 3-inner cavity of the mold, 100-clamping assembly, 110-pneumatic support legs, 111-pneumatic actuator, 112-reducer, 113-locking latch, 114-oil inlet, 115-piston, 116-piston rod, 117-oil outlet, 118-guide sleeve, 119-outer shell, 120-axial support plate, 130-guide rail, 131-slide rail cover, 132-locking latch, 140-axial clamping force arm, 150-chordal positioning member, 151-chordal support plate, 160-positioning laser. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] A device for preventing a cloth layer of a wind turbine blade from sliding down comprises an annular bearing 1. Two clamping assemblies 100 are arranged in the circumferential direction of the annular bearing 1. The clamping assemblies 100 are used to clamp the cloth layer in the front and rear edges 2 of a mold and in an inner cavity 3 of the mold to prevent the cloth layer from sliding down during the laying process. The clamping assemblies 100 comprise pneumatic legs 110 and an axial support plate 120 connected to the output end of the pneumatic legs 110. The pneumatic legs 110 are prior art and have a telescopic function similar to the telescopic principle of a cylinder or a hydraulic cylinder. The axial support plate 120 is driven to telescope by the pneumatic legs 110 and abuts against the cloth layer in the inner cavity 3 of the mold to clamp the cloth layer to prevent it from sliding down. The axial length of the clamping tooling can be adjusted according to different molds.

[0023] The clamping assembly 100 also includes a guide rail 130 and an axial clamping force arm 140 slidably connected to the guide rail 130. The axial clamping force arm 140 clamps the front and rear edges 2 of the mold. The guide rail 130 can be set on the outer shell 119 of the pneumatic support leg 110, and a mounting column can be additionally provided to mount the guide rail 130 and the pneumatic support leg 110 on the mounting column. The mounting column is connected to the annular bearing 1. The guide rail 130 is a prior art, also called a guide rail, which is used for linear reciprocating motion and has a rail cover 131 sliding on the guide rail 130. The axial clamping force arm 140 clamps the front and rear edges 2 of the mold. 0 can be connected to the slide rail cover 131. The driving force is usually a motor or a hydraulic system. If a hydraulic system is used, it can share a driving force with the pneumatic support leg 110. For example, the hydraulic system drives the pneumatic support leg 110 to extend and retract, and then the axial support plate 120 is extended to abut against the cloth layer in the mold cavity 3. The hydraulic system drives the axial clamping force arm 140 on the guide slide rail 130 to abut against the front and rear edges 2 of the mold, thereby clamping the front and rear edges 2 of the mold and the corresponding cloth layer in the mold cavity 3 to prevent the cloth layer from sliding down. The axial length of the clamping tooling can be adjusted according to different molds to maintain the axial stability of the equipment during use.

[0024] Preferably, a locking pin 132 is provided on the slide rail cover 131, and correspondingly, holes for inserting the locking pin 132 are provided on the slide rail cover 131 and the guide rail 130. The locking pin 132 is used to lock the slide rail cover 131 and the guide rail 130, thereby fixing the axial clamping arm 140 after the axial clamping arm 140 clamps the front and rear edges 2 of the mold.

[0025] A chord-wise positioning member 150 is also provided in the circumferential direction of the annular bearing 1 between the two clamping assemblies 100. The chord-wise positioning member 150 also uses the pneumatic support leg 110 as a telescopic mechanism. A chord-wise support plate 151 is provided at the output end of the pneumatic support leg 110 to play a certain positioning and anti-slip role for the cloth layer at the bottom of the mold cavity 3, thereby maintaining the chord-wise stability of the equipment during use.

[0026] In the prior art, the pneumatic outrigger 110 has a motor for controlling the travel of the guide rail, a pneumatic actuator 111 as a handwheel mechanism, a valve positioner, a reducer 112 for controlling the travel speed of the pneumatic outrigger 110, a locking latch 113 for clamping the force arm and the piston rod 116 to reach the specified position, to ensure that the guide rail and the piston rod 116 are not loose, the clamping force arm and the piston rod 116 are locked with a lock, and a manual switch is used to manually control the extension and retraction of the pneumatic outrigger 110; the pneumatic outrigger 110 also has an oil inlet 114, a piston 115, a piston rod 116, an oil outlet 117, a guide sleeve 118, an outer shell 119 of the pneumatic outrigger 110, and a cylinder exhaust hole , O-ring and other conventional structures, the piston rod 116 is connected to the piston 115 and installed in the outer shell 119 of the pneumatic support leg 110, the outer shell 119 of the pneumatic support leg 110 has an oil inlet 114, an oil outlet 117 and a cylinder exhaust hole, the guide sleeve 118 is sleeved on the outside of the piston rod 116, and holes for inserting the two ends of the locking pin 113 are provided on the piston rod 116 and the outer shell 119 of the pneumatic support leg 110, and the locking pin 113 is used to lock the piston rod 116, and the end of the piston rod 116 is connected to the chordal support plate 151 or the axial support plate 120. The detailed structure and working principle of the pneumatic support leg 110 are not repeated here.

[0027] Preferably, a positioning laser 160 is provided on the pneumatic support leg 110 on the side facing the mold cavity 3, which is used to detect whether there is a cloth layer underneath. The positioning laser 160 can be electrically connected to the pneumatic support leg 110. The positioning laser 160 is a prior art with a sensor head. The indicator points to the mold cavity 3. If the indicator works normally, it means that the guide rail 130 of the equipment is working normally; if the indicator does not work, it means that the guide rail 130 is damaged and needs to be replaced; an operating panel is provided on the annular bearing 1, which is an operating platform for various control buttons and is electrically connected to the positioning laser 160, the pneumatic support leg 110 and the electrical components in the guide rail 130. The annular top of the annular bearing 1 can also be used as a hook for crane lifting.

[0028] The specific operation steps of the utility model are:

[0029] This tooling equipment can be used when laying the upper side cloth layer of the blade root core material. Since the cloth layer of the blade root is laid circumferentially, after the tooling equipment is fixed and clamped, the corresponding pneumatic legs 110 are sequentially extended and retracted according to the circumferential laying order. After the cloth layer is laid, the pneumatic legs 110 are inflated again until the cloth layer is laid. When laying auxiliary materials, each pneumatic leg 110 can be slightly deflated to prevent indentations from appearing at the place where the support is pressed after the infusion is completed.

[0030] Other aspects: 1. The equipment can be treated with anti-corrosion and anti-rust treatment, and the corners of each surface of the tooling equipment can be rounded. The lower side of the support surface of each pneumatic leg 110 needs to be wrapped with a rubber pad to prevent scratching the cloth layer and crushing the core material; 2. The status of each component of the tooling equipment needs to be checked before use, and the tooling equipment is prohibited from being used with defects; each supporting surface needs to be cleaned, and a release cloth or a non-porous isolation film must be laid on the lower side of the rubber pad to prevent contamination of the cloth layer.

[0031] The main manufacturing method of the equipment of the utility model is: generally there are three pneumatic legs 110 (which can be adjusted to four or more pneumatic legs 110 according to the size of the blade and the demand), each pneumatic leg 110 is controlled by a root annular bearing, and each leg can be retracted after the equipment is used; all pneumatic legs 110 can be controlled by a remote control at the same time, and a single pneumatic leg 110 has a manual switch and can be operated separately, which is convenient for laying cloth.

[0032] The utility model is used for prefabricating blade root components and shell cloth layer support until the cloth layer is sealed and vacuumed; the positioning can be adaptively adjusted according to different blade sizes to prevent the cloth layer from sliding down, and at the same time, there is no need to reserve a turning spread, thereby reducing defects such as cloth layer overhead and stratification caused by cotton thread fixing the cloth layer; it can also prevent wrinkles caused by too many cloth layers that cannot be flattened manually during laying, thereby reducing the amount of maintenance and improving the quality of blades.

[0033] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A device for preventing wind turbine blade fabric from sliding down, characterized in that: The invention comprises an annular bearing (1), wherein a clamping assembly (100) is arranged in the circumferential direction of the annular bearing (1), wherein the clamping assembly (100) is used to clamp the front and rear edges of the mold and the cloth layer in the inner cavity of the mold, wherein the clamping assembly (100) comprises a pneumatic support leg (110) and an axial support plate (120) connected to the output end of the pneumatic support leg (110), wherein the axial support plate (120) is driven by the pneumatic support leg (110) to extend and retract and then abut against the cloth layer in the inner cavity of the mold; The pneumatic support leg (110) comprises an outer shell (119), a piston (115), a piston rod (116) and a locking pin (113); the piston rod (116) is connected to the piston (115) and installed in the outer shell (119) of the pneumatic support leg (110); the piston rod (116) and the outer shell (119) have holes for inserting the two ends of the locking pin (113); the locking pin (113) is installed between the piston rod (116) and the outer shell (119) and is used to lock the piston rod (116) after extension and contraction.

2. The device for preventing the wind turbine blade fabric from sliding down according to claim 1 is characterized in that: The clamping assembly (100) further comprises a guide rail (130) and an axial clamping force arm (140) slidably connected to the guide rail (130); the axial clamping force arm (140) can adjust the axial length after sliding, and is used to clamp the front and rear edges of the mold.

3. The device for preventing the wind turbine blade fabric from sliding down according to claim 2, characterized in that: A rail cover (131) is slidably connected to the guide rail (130), the axial clamping force arm (140) is connected to the rail cover (131), and a locking pin (132) for locking the rail cover (131) and the guide rail (130) is provided on the rail cover (131).

4. The device for preventing the wind turbine blade fabric from sliding down according to claim 3 is characterized in that: A chord-wise positioning member (150) is also provided on the annular bearing (1) between the two clamping assemblies (100). The chord-wise positioning member (150) comprises a pneumatic support leg (110) and a chord-wise support plate (151) connected to the output end of the pneumatic support leg (110), and is used to maintain chord-wise stability of the device during use.

5. The device for preventing wind turbine blade fabric from sliding down according to claim 1, characterized in that: A positioning laser (160) is provided on the pneumatic leg (110) facing the inner cavity of the mold, for detecting the cloth layer below.

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