CN107673183B - Protection device and blade hoist - Google Patents
Protection device and blade hoist Download PDFInfo
- Publication number
- CN107673183B CN107673183B CN201710711290.4A CN201710711290A CN107673183B CN 107673183 B CN107673183 B CN 107673183B CN 201710711290 A CN201710711290 A CN 201710711290A CN 107673183 B CN107673183 B CN 107673183B
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- China
- Prior art keywords
- protective cover
- blade
- protection device
- cover body
- wall surface
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/108—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means for lifting parts of wind turbines
Abstract
The invention provides a protection device and a blade lifting appliance. The protection device is used for protecting the pneumatic annex of installing in the blade, and the protection device includes: the protective cover body is provided with an accommodating cavity and an opening part which are communicated with each other, and the protective cover body can be buckled on the outer wall surface of the blade through the opening part so as to receive the pneumatic accessory in the accommodating cavity; adapting unit, adapting unit are connected with the protecting cover body, can connect the protecting cover body in hoist device. Therefore, the protection device and the blade lifting appliance provided by the invention can achieve the purposes of avoiding the pneumatic accessories arranged on the blades from being damaged due to extrusion of the lifting device and improving the lifting efficiency of the impeller set in the process of lifting the blades in the impeller set by the lifting device.
Description
Technical Field
The invention relates to the field of equipment in the technical field of wind power generation, in particular to a protection device and a blade lifting appliance.
Background
The blades are core working components of the wind generating set, and the wind generating set converts wind energy into electric energy based on the rotation of the blades under the action of wind power, so that the size of the wind energy captured by the blades from circulating air is directly related to the energy output of the wind generating set. However, in the operation of the wind generating set, the airflow may flow and separate at the root of the blade or in most of the span range of the blade, which affects the wind energy capture efficiency of the wind generating set.
Therefore, most of the blades of the wind generating set are provided with aerodynamic accessories, such as vortex generators, stall strips, herringbone strips and the like, and the aerodynamic accessories are arranged on the surface of the blade and can improve the aerodynamic performance of the blade according to the aerodynamic characteristics of the blade, so that the generating capacity of the wind generating set can be improved.
In performing the lifting of the impeller assembly, a lifting device is typically used to assist in assembling the blades to the hub. However, when the hoisting device is used for hoisting the blade provided with the pneumatic accessory, the pneumatic accessory is connected to the surface of the blade, so that the hoisting device is easy to excessively extrude the pneumatic accessory when supporting the blade to be lifted upwards, and the pneumatic accessory is damaged. When the pneumatic accessory is damaged, it needs to be removed and reconnected. Therefore, excessive materials and labor cost are wasted, the hoisting period is prolonged, and the construction efficiency of the wind generating set is reduced.
At present, due to the fact that an effective protection device and a blade lifting appliance are not available, when blades are lifted, the lifting device is usually intentionally avoided and lifted in order to not damage the pneumatic accessories, and then the problems that the lifting of the blades is unbalanced or the lifting of the blades is low in alignment precision and low in efficiency are caused, and even more, the failure of lifting of the blades is caused, and major safety accidents are caused.
therefore, a new protection device and blade sling are needed.
Disclosure of Invention
According to the embodiment of the invention, the protection device and the blade lifting appliance are provided, so that the pneumatic accessories arranged on the blades can be prevented from being damaged due to extrusion of the lifting device in the process of lifting the blades in the impeller set through the lifting device, and the lifting efficiency of the impeller set is improved.
according to an aspect of an embodiment of the present invention, there is provided a protection device for protecting a blade-mounted aerodynamic accessory, including: the protecting cover body, the protecting cover body have hold the chamber and with hold the opening of chamber intercommunication, the protecting cover body can be through opening lock in the outer wall of blade to receive pneumatic annex in holding the chamber, separate hoisting device and the outer wall of blade each other through the protecting cover body.
According to an aspect of the embodiment of the present invention, the protective cover further includes an abutting portion connected to an edge of the opening portion, and the protective cover can be in abutting engagement with the outer wall surface of the blade through the abutting portion.
According to an aspect of the embodiment of the present invention, the abutting portion is continuously provided along an edge of the opening portion.
According to an aspect of the embodiment of the present invention, the abutting portion includes a support plate connected to an edge of the opening portion tangentially to an outer wall surface of the blade.
According to an aspect of the embodiment of the present invention, the protective cover body further includes a contact portion provided on an end surface of the abutting portion facing the blade, the abutting portion being in contact with an outer wall surface of the blade through the contact portion.
According to an aspect of an embodiment of the invention, the contact portion comprises a layer or block structure made of a flexible material.
According to an aspect of the embodiment of the present invention, the protective cover body includes at least two side walls connected to each other and a reinforcing structural member located in the receiving cavity and connected between two adjacent side walls of the protective cover body to limit an amount of deformation of an angle formed between the two opposite side walls of the protective cover body in an extending direction of the lifting device.
According to an aspect of the embodiment of the present invention, the protection device further includes a connection member connected with the protective cover body to connect the protective cover body to the lifting device.
according to an aspect of the embodiment of the invention, the connecting part forms a guide channel with two open ends on the side of the protective cover body away from the opening part, and the guide channel is used for a hoisting device to pass through so as to movably connect the protective cover body on the hoisting device.
According to an aspect of an embodiment of the present invention, the connecting member includes a fixing band, the fixing band and the shield body cooperate with each other to enclose the guide passage, wherein the connecting member includes two fixing bands, the two fixing bands are disposed on the shield body opposite to each other and are provided with fastening structures corresponding to each other to be engaged with each other by the fastening structures; or the connecting part comprises a fixing bandage, and two ends of the fixing bandage are respectively fixedly connected to the protective cover body.
According to an aspect of an embodiment of the present invention, the protection device further includes: the detection unit is arranged in the accommodating cavity and used for acquiring position data of the pneumatic accessories in the accommodating cavity; the processing unit is connected with the detection unit and used for receiving the position data, comparing the position data with a preset threshold value and sending an alarm instruction when the position data is smaller than the preset threshold value; and the alarm unit is connected with the processing unit and used for receiving the alarm instruction and responding the alarm instruction to send out an alarm prompt.
According to an aspect of an embodiment of the present invention, the detection unit includes: infrared pressure sensors or laser ranging sensors.
according to an aspect of the embodiment of the present invention, the shape of the transverse section and/or the longitudinal section of the shield body is configured to be trapezoidal, semicircular, rectangular, or triangular.
According to another aspect of an embodiment of the present invention, there is also provided a blade hanger including: the hoisting device can support the blade; and the protective device is movably connected to the hoisting device through the guide channel, so that the opening part can be buckled on the outer wall surface of the blade, and the pneumatic accessory is received in the accommodating cavity.
In summary, according to the protection device and the blade hanger of the embodiment of the present invention, the protection cover body having the opening portion and the accommodating cavity communicating with the opening portion is provided, and the protection cover body covers the outer periphery of the pneumatic attachment mounted on the outer wall surface of the blade through the opening portion. From this can receive pneumatic annex in holding the chamber through the protecting cover body to separate the outer wall of blade and hoist device each other, avoid hoist device to carry out the in-process of hoist and mount at supplementary blade, cause excessive extrusion to pneumatic annex, and cause the damage to pneumatic annex, and cause the influence to the stability of being connected between the outer wall of pneumatic annex and blade. Therefore, the protection device provided by the embodiment of the invention can achieve one or more of the purposes of improving the assembly efficiency of the impeller set, saving labor and reducing the production cost of the wind generating set.
Drawings
the invention may be better understood from the following description of specific embodiments thereof taken in conjunction with the accompanying drawings, in which:
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.
Fig. 1 is a schematic cross-sectional view of a protective device according to an embodiment of the present invention in a specific application example;
FIG. 2 is a schematic illustration of a layered structure of a material of a protective mask body according to an embodiment of the invention;
Fig. 3 is a schematic cross-sectional view of a protection device according to another embodiment of the present invention in a specific application example;
Fig. 4 is a schematic configuration diagram of one specific example of a connecting member in the protection apparatus according to the embodiment of the present invention;
Fig. 5 is a schematic cross-sectional view of a protection device according to a further embodiment of the present invention in a specific application example;
Fig. 6 is a schematic cross-sectional view of a protection device according to another embodiment of the present invention in a specific application example;
Fig. 7 is a schematic cross-sectional view of a protective device according to still another embodiment of the present invention in a specific application example.
Wherein:
10-the outer wall surface of the blade;
20-a protective device; 21-a protective mask body; 211-inner layer; 212-an outer layer; 213-a side wall; 214-a side wall; 215-side wall; 21 a-a receiving cavity; 21 b-an opening; 22-a connecting member; 221-securing straps; 222-securing straps; 223-bonding buckle; 23-a support plate; 24-a contact portion; 25-a detection unit; 26-an alarm unit; 27-a reinforcing structure;
30-hoisting the device;
40-pneumatic accessories.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
the following description will be given with the directional terms as they are shown in the drawings, and not intended to limit the protection device and the specific structure of the blade sling according to the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The protective device and the blade lifting appliance provided by the embodiment of the invention can be applied to a blade lifting link and are matched with a lifting device for bearing a blade, and when the lifting device is used for lifting the blade, the pneumatic accessories arranged on the blade are protected by the protective device. The pneumatic accessories are prevented from being damaged under the extrusion force action of the hoisting device. Therefore, the stability of the connection between the pneumatic accessories and the blades can be ensured, and the lifting efficiency of the impeller assembly is improved. The pneumatic attachments may be, but are not limited to, vortex generators, stall strips, chevron belts, and the like.
for a better understanding of the invention, a protection device and a blade sling according to an embodiment of the invention will be described below with reference to fig. 1 to 7.
Fig. 1 is a schematic cross-sectional view of a protection device 20 according to an embodiment of the present invention in a specific application example. As shown in fig. 1, the protection device 20 can cooperate with a lifting device 30 for lifting a blade, for protecting aerodynamic accessories 40 mounted on the blade (only the outer wall surface 10 of the blade is schematically shown in the figure), and in particular, for improving the power generation capacity of a wind turbine generator system, the aerodynamic accessories are usually mounted on the blade in a group arrangement. The hoisting device is not limited to a hoisting belt, a hoisting rope and the like, and can be any device for completing the hoisting process of the blade.
The protection device 20 includes: the protective cover 21 comprises a containing cavity 21a and an opening 21b which are communicated with each other, the protective cover 21 can be buckled on the outer wall surface 10 of the blade through the opening 21b, so that the pneumatic accessory 40 is received in the containing cavity 21a, and the hoisting device 30 is separated from the outer wall surface 10 of the blade through the protective cover 21.
thus, the protector 20 according to the embodiment of the present invention has the housing cavity 21a and the opening 21b communicating with the housing cavity 21a formed by the protector body 21, and can cover the outer periphery of the pneumatic attachment 40 attached to the outer wall surface 10 of the blade through the opening 21 b. The pneumatic attachment 40 can thus be received in the receiving space 21a by the protective hood 21 and the outer wall surface 10 of the blade and the lifting device 30 can be separated from one another by the protective hood 21. The hoisting device 30 is prevented from excessively extruding the pneumatic attachment 40 in the process of hoisting the auxiliary blade, so that the pneumatic attachment 40 is damaged, and the connection stability between the pneumatic attachment 40 and the outer wall surface 10 of the blade is prevented from being affected. Therefore, the protection device 20 of the embodiment of the invention can achieve one or more of the purposes of improving the assembly efficiency of the impeller set, saving labor force and reducing the construction cost of the wind turbine generator set.
with continued reference to fig. 1, according to an embodiment of the present invention, the protective device 20 is cut along the extending direction of the lifting device 30, and the sectional shape of the protective cover 21 is substantially semicircular. An accommodation chamber 21a and an opening 21b communicating with the accommodation chamber 21a are formed at one side of the shield body 21, wherein the sizes of the accommodation chamber 21a and the opening 21b need to be set according to the size of each pneumatic attachment 40 provided on the outer wall surface 10 of the blade. So that the protective cover body 21 can be engaged with the outer circumference of the pneumatic attachment 40 through the opening portion 21b, the pneumatic attachment 40 is received in the receiving cavity 21a, and neither the inner wall of the receiving cavity 21a nor the opening portion 21b touches the pneumatic attachment 40. Since the protective cover 21 can be freely supported between the outer wall surface 10 of the blade and the lifting device 30, the protective cover 21 can be installed as required according to the relative position between the lifting device 30 and the pneumatic attachment 40 during the specific lifting process of the blade. In this way, the protective cover body 21 can be covered on each pneumatic accessory 40 one by one, and the situation that the protective device 20 is not installed outside the pneumatic accessory 40 is avoided. Therefore, the problem that the pneumatic accessories 40 are extruded out of the lifting device 30 and damaged can be solved, the assembly efficiency of the impeller set can be improved, and the power generation capacity of the wind generating set can be guaranteed.
in the present embodiment, the protective cover 21 is provided with a uniform wall thickness, and may be made of a material having certain hardness and toughness, for example, the protective cover 21 may be made of glass fiber reinforced plastic, or the like. So that the protective cover 21 has sufficient rigidity to be supported between the outer wall surface 10 of the blade and the lifting device 30, and the pneumatic attachment 40 is prevented from being pressed by the lifting device 30. Fig. 2 is a schematic view of the layered structure of the material of the protective mask body 21 according to one embodiment of the present invention. In order to prevent the protective cover 21 from being fastened to the outer wall surface 10 of the blade to damage the outer wall surface 10 of the blade, the protective cover 21 may have a layered structure. As shown in fig. 2, in the present embodiment, the protective cover 21 includes an inner layer 211 and an outer layer 212, wherein the inner layer 211 is made of a material with certain hardness, such as glass fiber reinforced plastic or plastic, and the outer layer 212 is made of a flexible material with protective function, such as fabric. Through adopting the lamellar structure that outer 212 wraps inner 211 in the center and form for protective housing 21 can also protect the outer wall surface 10 of blade rather than contact when having sufficient hardness, prevents to cause the mar because protective housing 21 receives the extrusion force of hoist device 30 to the outer wall surface 10 of blade.
In addition, the specific form of the protective cover 21 in the embodiment of the present invention is not limited, and as for the protective cover 21 having a substantially semicircular cross-sectional shape after being cut along the extending direction of the hoisting device 30, in some embodiments, the whole of the protective cover 21 may be, for example, a hemispherical structure (the whole structure of the protective cover 21 is not shown in the drawings). Namely, the pneumatic attachment 40 is integrally received in the receiving cavity 21a by the hemispherical shield body 21 and supported between the outer wall surface 10 of the blade and the lifting device 30 by the shield body 21, so that the pneumatic attachment 40 is protected from being pressed by the lifting device 30.
in addition, for the protective cover body 21 having a substantially semicircular sectional shape when cut along the extending direction of the hoisting device 30, in other embodiments, when the material of the protective cover body 21 has sufficient hardness, the protective cover body 21 may also be a plate-shaped structure, and specifically, the protective cover body 21 is formed of an arc-shaped plate body. That is to say, the protective hood 21 is open on both sides in the direction of extension of the lifting device 30, so that the pneumatic accessory 40 can be received at least partially in the receiving space 21a by the protective hood 21, and the pneumatic accessory 40 can be supported between the outer wall 10 of the blade and the lifting device 30 by the plate-shaped protective hood 21, so that it is protected from being pressed by the lifting device 30.
Fig. 3 is a schematic cross-sectional view of a protection device 20 according to another embodiment of the present invention in a specific application example; fig. 4 is a schematic structural view of a specific example of the connecting member 22 in the protection device 20 according to the embodiment of the present invention. The same reference numerals are used in this embodiment for the same components as in the protection device 20 shown in fig. 1 described above, and the detailed description of the structure that has already been described will not be repeated again. As shown in fig. 3 and 4, the protection device 20 shown in fig. 1 is different in that in the present embodiment, the protection device further includes a connection member 22, the connection member 22 is connected to the protective cover 21, and the protective cover 21 can be connected to the lifting device 30 so that the lifting device 30 and the outer wall surface 10 of the blade are spaced from each other by the protective cover 21.
In some embodiments, the connection part 22 is connected to the protective cover body 21, and a guide channel (not shown) with two open ends is formed on the side of the protective cover body 21 away from the opening 21b, and the guide channel is used for passing through the hoisting device 30 so as to movably connect the protective cover body 21 to the hoisting device 30. In the present embodiment, the connection member 22 connected to the plate-shaped shield body 21 will be specifically described by taking the shield body 21 as an example. The connecting member 22 includes a fixing band to form the above-described guide passage with the surface of the shield body 21 on the side away from the opening portion 21 b.
Illustratively, as shown in fig. 4, the connecting part 22 includes a fixing strap 221 and a fixing strap 222 which are arranged on the protective cover body 21 opposite to each other, that is, when the protective cover body 21 is connected with the lifting device 30, the lifting device 30 is attached to the surface of the protective cover body 21 on the side away from the accommodating cavity 21a, and the fixing strap 221 and the fixing strap 222 arranged on the protective cover body 21 are respectively located on both sides of the lifting device 30 in the longitudinal direction. Specifically, in the present embodiment, the fixing strap 221 and the fixing strap 222 are fixedly connected to the outer surface of the shield body 21 (of course, the outer periphery of the shield body 21 or the surface facing away from the accommodating cavity 21a) through respective one ends, and the fixing strap 221 and the fixing strap 222 are respectively provided with the adhesive button 223 through respective other ends. When it is desired to attach the protective device 20 to the lifting device 30, the fixing strap 221 and the fixing strap 222 can be engaged with each other by the adhesive button 223, so that the fixing strap 221 and the fixing strap 222 engaged with each other and the surface of the protective cover body 21 on the side away from the opening 21b together form a guide passage for the lifting device 30 to pass through, thereby removably attaching the protective cover body 21 to the lifting device 30.
When the blade is hoisted by using the hoisting device 30, the hoisting device 30 supports the bottom surface of the blade and extends upwards from two sides of the blade. After the protective cover 21 is removably attached to the lifting device 30 by means of the attachment means 22, the protective cover 21 can then be supported between the outer wall surface 10 of the blade and the lifting device 30. Furthermore, by adjusting the position of the protection device 20 on the lifting device 30, the protective cover 21 can be moved on the outer wall surface 10 of the blade relative to the pneumatic accessory 40, so that the pneumatic accessory 40 is received in the receiving cavity 21a, and damage to the pneumatic accessory 40 due to improper mutual positions of the receiving cavity 21a and the pneumatic accessory 40 is avoided. Meanwhile, the position of the protection device 20 on the hoisting device 30 can be adaptively adjusted at any time in the process of hoisting the blade.
Therefore, when the hoisting device 30 assists in hoisting the blade, the protective cover body 21 is always supported between the outer wall surface 10 of the blade and the hoisting device 30, receives the pneumatic accessory 40 in the accommodating cavity 21a, and bears the extrusion force applied by the hoisting device 30, so that the pneumatic accessory 40 is prevented from being extruded by the hoisting device 30. Therefore, there is no need to disassemble the pneumatic attachment 40 damaged by the lifting device 30 during the blade lifting process. Therefore, by using the protection device 20 and the hoisting device 30 of the embodiment of the invention to cooperate with the auxiliary blade for hoisting, the hoisting efficiency of the impeller assembly can be improved on the basis of ensuring that the surface of the blade is not damaged due to the disassembly of the pneumatic accessory 40, thereby improving the construction efficiency of the wind generating set.
Fig. 5 is a schematic cross-sectional view of a protection device 20 according to still another embodiment of the present invention in a specific application example. In the present embodiment, the same reference numerals are used for the same components in fig. 5 as those in the protection device 20 in the embodiment shown in fig. 3 for the convenience of understanding and distinction. In an alternative embodiment, as shown in fig. 5, the protective cover 21 may have a substantially trapezoidal cross-sectional shape after cutting the protective device 20 along the extending direction of the lifting device 30. Also, an accommodating chamber 21a and an opening portion 21b communicating with the accommodating chamber 21a are formed at one side of the shield body 21 to be engaged with the outer circumference of the pneumatic attachment 40 through the opening portion 21b, to receive the pneumatic attachment 40 in the accommodating chamber 21a, and to ensure that neither the inner wall of the accommodating chamber 21a nor the opening portion 21b touches the pneumatic attachment 40.
further, with respect to the shield body 21 having a substantially trapezoidal sectional shape cut along the extending direction of the hoist 30, the transverse section (i.e., along the width direction of the hoist 30) and the longitudinal section (i.e., along the extending direction of the hoist 30) of the shield body 21 may both be substantially trapezoidal; or one of the transverse section and the longitudinal section of the protective cover body 21 is substantially trapezoidal. Of course, for the protective cover 21 having a substantially trapezoidal longitudinal section, the protective cover 21 may also have a plate-like structure as in the above-described embodiment, but in this embodiment, the protective cover 21 is not formed by an arc-shaped plate, but formed by bending the plate, so that the protective cover 21 is open on both sides of the extending direction of the lifting device 30. In addition, the connecting member 22 in this embodiment is the same as the connecting member 22 of the protection device 20 in the above embodiment, and thus, the description thereof is omitted.
In an alternative embodiment, as shown in fig. 5, the protective cover 21 may further include an abutting portion to prevent the edge of the protective cover 21 from scratching the outer wall surface 10 of the blade by the abutting portion abutting and cooperating with the outer wall surface 10 of the blade. Specifically, the abutting portion is a support plate 23, and the support plate 23 is connected to the edge of the opening portion 21b and is tangent to the outer wall surface 10 of the blade. Therefore, the protective cover 21 can abut against the outer wall surface 10 of the blade through the support plate 23 without damaging the outer wall surface 10 of the blade. In addition, the support plate 23 may be made of a flexible material, so that the outer wall surface 10 of the blade can be further protected by the support plate 23, and the protective cover 21 is prevented from being supported on the outer circumference of the aerodynamic accessory 40 and damaging the outer wall surface 10 of the blade.
illustratively, the abutting portion may be continuously formed at the edge of the opening portion 21b, which not only can further protect the outer wall surface 10 of the blade from being damaged, but also enables the protective cover 21 to apply uniform pressure to the outer wall surface 10 of the blade through the abutting portion, thereby preventing the outer wall surface 10 of the blade from being damaged due to local pressure. In addition, for example, the abutting portion and the protective cover 21 may be of an integral structure, or may be of a split structure.
in addition, in an alternative embodiment, as shown in fig. 5, the protective cover 21 may further include a contact portion 24. The contact portion 24 is provided on an end surface of the abutting portion facing the outer wall surface 10 of the blade. For example, in an exemplary embodiment, when the abutting portion is the support plate 23 in the above-described embodiment, the contact portion 24 may be a layer-like or block-like structure that is adhesively attached to the end surface of the support plate 23 on the side facing the outer wall surface 10 of the blade and is made of a flexible material. Specifically, the contact portion 24 may include a cotton pad layer, a fabric pad layer, or a rubber pad layer. Thus, the abutting portion can be brought into contact with the outer wall surface 10 of the blade by the contact portion 24, and the contact portion 24 further reduces the possibility of damage to the outer wall surface 10 of the blade by the shield body 21. Of course, the contact portion 24 may have another configuration as long as it can avoid damage to the outer wall surface 10 of the blade when the abutting portion is brought into contact with the outer wall surface 10 of the blade through the contact portion 24.
Fig. 6 is a schematic cross-sectional view of a protection device 20 according to another embodiment of the present invention in a specific application example. In the present embodiment, the same reference numerals are used for the same components in fig. 6 as those in the protection device 20 in the embodiment shown in fig. 5 for ease of understanding and distinction. As shown in fig. 6, in an alternative embodiment, the protection device 20 may further comprise a detection unit 25, an alarm unit 26 and a processing unit (not shown in the figure).
Specifically, the detection unit 25 is installed in the housing cavity 21a of the shield body 21 for acquiring position data of the pneumatic accessory 40 received in the housing cavity 21 a.
In the process of using the protection device 20 of the present embodiment to cooperate with the lifting device 30 to lift the blade, the detection unit 25 is installed in the accommodating cavity 21a, and detects the actual distance between the pneumatic accessory 40 located in the accommodating cavity 21a and the detection unit 25 in real time (i.e. the actual distance between the pneumatic accessory 40 and the inner side wall of the accommodating cavity 21a is converted into the actual distance between the pneumatic accessory 40 and the detection unit 25), and generates the actual distance as the position data of the pneumatic accessory 40 and sends the position data to the processing unit. Illustratively, the detection unit 25 may include an infrared pressure sensor or a laser ranging sensor. In addition, the detecting unit 25 may be mounted on the side wall 213 as shown in fig. 6, or may be mounted on two opposite side walls (i.e., the side wall 214 and the side wall 215) of the protective cover 21 along the extending direction of the hoisting device 30. In addition, it is also possible to provide a plurality of detection units 25 in the housing chamber 21a, and to mount the plurality of detection units 25 on the respective side walls of the housing chamber 21 a.
And the processing unit is connected with the detection unit 25 and used for receiving the position data sent by the detection unit 25, comparing the position data with a preset threshold value, and sending an alarm instruction when the position data is smaller than the preset threshold value.
A preset threshold value is stored in advance in the processing unit, and the preset threshold value is a lower limit value of the distance between the detection unit 25 and the pneumatic accessory 40, that is, when the actual distance between the pneumatic accessory 40 and the detection unit 25 is smaller than the lower limit value (i.e., the preset threshold value), it indicates that the pneumatic accessory 40 will contact the inner side wall of the accommodating cavity 21 a. Therefore, when the processing unit receives the position data (i.e. the actual distance between the pneumatic accessory 40 and the detection unit 25) sent from the detection unit 25, it compares the position data with the pre-stored preset threshold value, and when the processing unit determines that the position data is smaller than the preset threshold value, it sends an alarm command to the alarm unit 26.
In the present embodiment, the specific arrangement position of the processing unit is not limited, for example, the processing unit may be integrated with the detection unit 25 or integrated with the alarm unit 26 in one module, or the processing unit may be separately arranged in the accommodating chamber 21a, as long as the processing unit can receive the position data sent by the detection unit 25 and send an alarm instruction to the alarm unit 26 when the position data is determined to be smaller than the preset threshold value.
The alarm unit 26 is connected to the processing unit, and is configured to receive an alarm command sent by the processing unit, and send an alarm prompt in response to the alarm command. The alarm unit 26 may be, for example, an audible alarm or a luminous alarm, so that it can prompt the operator, by sound or light, that the inner side wall of the housing cavity 21a is about to touch the pneumatic attachment 40 mounted on the outer wall 10 of the blade in response to an alarm command sent by the processing unit. The operator can thus find it in time and can adjust the connection position of the protective device 20 on the lifting device 30 accordingly, so that the pneumatic attachment 40 located in the receiving space 21a is located away from the inner wall of the receiving space 21 a. Therefore, the protection state of the protection device 20 to the pneumatic accessory 40 can be monitored in real time in the hoisting process of the blade, the stability of connection between the pneumatic accessory 40 and the outer wall surface 10 of the blade is further ensured, and the pneumatic accessory 40 is prevented from being extruded and damaged after the protection device 20 undesirably moves. Of course, the type of the alarm unit 26 is not limited in the present invention, and in other embodiments, the alarm unit 26 may also be a display, in which case, the processing unit may directly send the warning instruction to the display to be displayed in a prompt message manner through the display.
Of course, the invention is not limited to the specific setting position of the alarm unit 26, and when the alarm unit 26 is an audible alarm or a luminous alarm, it may be set on the outer periphery of the protective cover body 21 or the surface away from the accommodating cavity 21 a; the alarm unit 26, when a display, may be located at a remote location and remotely connected to the processing unit.
Fig. 7 is a schematic cross-sectional view of a protection device 20 according to still another embodiment of the present invention in a specific application example. In the present embodiment, the same reference numerals are used for the same components as those in the protection device 20 in the embodiment shown in fig. 3 for the convenience of understanding and distinction. As shown in fig. 7, in an alternative embodiment, the protective cover body 21 is formed by bending a plate body (i.e. the protective cover body 21 has three side walls connected to each other and is open at both sides of the extending direction of the lifting device 30), and the protective cover body 21 may further include a reinforcing structural member 27 to limit the amount of deformation of an angle formed between two opposite side walls of the protective cover body 21 in the extending direction of the lifting device 30 by the reinforcing structural member 27.
In the present embodiment, the shield body 21 includes only the side wall 213, the side wall 214, and the side wall 215 connected to each other. Specifically, as shown in fig. 7, the reinforcing structure 27 includes two reinforcing ribs, which are respectively connected between a side wall 213 of the shield body 21, which is substantially parallel to the lifting device 30, and a side wall 214, which is substantially perpendicular to the lifting device 30, and between the side wall 213 of the shield body 21, which is substantially parallel to the lifting device 30, and a side wall 215, which is substantially perpendicular to the lifting device 30. Therefore, when the hoisting device 30 applies the pressing force to the shield body 21 so that the amount of deformation of the angle formed between the side wall 214 and the side wall 215 of the shield body 21 tends to increase, it is possible to provide the pulling force between the side wall 213 and the side wall 214 and between the side wall 213 and the side wall 215, respectively, by the two reinforcing ribs, so as to limit the amount of deformation of the angle formed between the two side walls (i.e., the side wall 214 and the side wall 215) of the shield body 21 that are opposite to each other in the extending direction of the hoisting device 30. Therefore, when the hoisting device 30 excessively presses the protective cover body 21 formed by folding the plate body, the protective cover body 21 is prevented from deforming to press the pneumatic accessories 40 in the accommodating cavity 21 a.
Of course, in other embodiments, for a protective cover 21 (not shown) having five side walls, the reinforcing structure 27 may be provided, and the reinforcing structure 27 may be connected between two adjacent side walls of the protective cover 21 to limit the deformation amount of the angle formed between two opposite side walls of the protective cover 21 along the extending direction of the lifting device 30, so as to increase the structural strength of the protective cover 21.
For example, when the reinforcing structural members 27 are reinforcing ribs, a plurality of reinforcing ribs may be connected between two adjacent ones of the five side walls of the protective cover body 21, respectively, but it is necessary to satisfy a condition that, by connecting reinforcing ribs between two adjacent side walls, the amount of deformation of an angle formed between two side walls of the protective cover body 21 that are opposite to each other in the extending direction of the lifting device 30 should be limited. Therefore, in the process that the protective device 20 is matched with the hoisting device 30 to assist in hoisting the blades, the situation that the side wall of the protective cover body 21 is broken due to the fact that the protective cover body is subjected to excessive extrusion force of the hoisting device 30 can be avoided.
In an alternative embodiment, the abutting portion may be replaced by a rubber member, and the rubber member may be directly connected to the edge of the opening portion 21b, so that the protective cover 21 abuts against the outer wall surface 10 of the blade through the rubber member. Since the rubber member itself has elasticity and a certain frictional force, when the protector 20 abuts against the outer wall surface 10 of the blade through the rubber member, the outer wall surface 10 of the blade can be protected from being damaged while the frictional force between the protective cover body 21 and the outer wall surface 10 of the blade can be increased. Therefore, the protective cover 21 can be prevented from moving on the outer wall surface 10 of the blade with respect to the aerodynamic attachment 40.
In the above-described embodiment, the connection member 22 includes the fixing band 221 and the fixing band 222, and the guide passage is enclosed with the surface of the shield body 21 on the side away from the opening portion 21b by the fixing band 221 and the fixing band 222 being engaged with each other, but the embodiment of the present invention is not limited thereto. In other embodiments, the connecting part 22 may further include a fixing band, and the fixing band and the surface of the protecting cover 21 on the side far from the opening 21b can also enclose the guide passage by fixedly connecting both ends of the fixing band to the protecting cover 21 (not shown). In addition, in other embodiments, the fixing strap may be replaced by other connecting members, for example, the connecting member may be a fastener such as a bolt, and the protective cover 21 may also be connected to the lifting device 30 by the fastener such as the bolt, so that the protective cover 21 is supported between the outer wall surface 10 of the blade and the lifting device 30.
In addition, in the above-described embodiment, the securing band 221 and the securing band 222 are joined by the adhesive button 223 provided corresponding to each other, but embodiments of the present invention are not limited thereto. In other implementations, other fastening structures may be correspondingly disposed between securing strap 221 and securing strap 222. For example, it is also possible to provide a snap structure on the fixing band 221 and the fixing band 222 corresponding to each other, so that the engagement and the separation between the fixing band 221 and the fixing band 222 are achieved by the snap structure.
In the above embodiment, only the protective device 20 is shown to have the protective cover body 21 having the semicircular and trapezoidal sectional shape cut along the extending direction of the hoist 30, but the embodiment of the present invention is not limited thereto. In other embodiments, the shape of the transverse cross section and/or the longitudinal cross section of the protective hood body 21 can also be trapezoidal, semicircular, rectangular or triangular.
Furthermore, according to an embodiment of the invention, a blade sling is provided (as shown in fig. 4), although only a part of the structure of the blade sling is shown in fig. 4, which comprises a lifting device 30 and a protection device 20 as mentioned in any of the above embodiments. When the blade is hoisted by the blade hoist auxiliary blade, the hoisting device 30 can support the blade, and the protection device 20 is movably connected to the hoisting device 30 through the guide channel of the protection device 20, so that the opening 21b of the protection device 20 can be buckled on the outer wall surface 10 of the blade, and the pneumatic accessory 40 is received in the accommodating cavity 21 a.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Also, different features that are present in different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art upon studying the drawings, the specification, and the claims.
Claims (14)
1. A protection device (20) for protecting a pneumatic accessory (40) mounted to a blade, comprising:
the protective cover body (21) is provided with an accommodating cavity (21a) and an opening part (21b) communicated with the accommodating cavity (21a), the protective cover body (21) can be buckled on the outer wall surface (10) of the blade through the opening part (21b) so as to receive the pneumatic accessory (40) in the accommodating cavity (21a), and a hoisting device (30) for hoisting the blade is separated from the outer wall surface (10) of the blade through the protective cover body (21),
the protective cover body (21) is of a layered structure and comprises an inner layer (211) and an outer layer (212), the inner layer (211) is wrapped in the center by the outer layer (212), and the outer layer (212) is made of flexible materials.
2. The protection device (20) according to claim 1, wherein the protective cover (21) further comprises an abutment portion connected to an edge of the opening portion (21b), by which the protective cover (21) can be brought into abutting engagement with the outer wall surface (10) of the blade.
3. the protection device (20) according to claim 2, wherein said abutment is provided continuously along the edge of said opening (21 b).
4. The protection device (20) according to claim 2, characterized in that said abutment comprises a support plate (23), said support plate (23) being connected to the edge of said opening (21b) tangentially to the outer wall surface (10) of said blade.
5. The protection device (20) according to claim 2, wherein the protective cover body (21) further comprises a contact portion (24), the contact portion (24) being provided on an end surface of the abutment portion facing the blade, the abutment portion being in contact with the outer wall surface (10) of the blade through the contact portion (24).
6. The protection device (20) according to claim 5, wherein said contact portion (24) comprises a laminar or block structure made of flexible material.
7. The protection device (20) according to claim 1, wherein the protective cover body (21) comprises at least two side walls connected to each other and a reinforcing structure (27), the reinforcing structure (27) being located in the receiving cavity (21a) and being connected between two adjacent side walls of the protective cover body (21) to limit the amount of deformation of the angle formed between two opposite side walls of the protective cover body (21) in the extension direction of the lifting device (30).
8. The protection device (20) according to any one of claims 1 to 7, wherein the protection device (20) further comprises a connection member (22), the connection member (22) being connected with the protective cover body (21) to connect the protective cover body (21) to the lifting device (30).
9. The protection device (20) according to claim 8, wherein the connecting part (22) forms a guide channel open at both ends on a side of the protective cover body (21) facing away from the opening (21b), the guide channel being used for the passage of the lifting device (30) for movably connecting the protective cover body (21) to the lifting device (30).
10. The protection device (20) according to claim 9, wherein the connecting member (22) comprises a securing strap (221, 222), the securing strap (221, 222) and the protective cover body (21) cooperating with each other to enclose the guiding channel, wherein,
the connecting part (22) comprises two fixing straps (221, 222), the two fixing straps (221, 222) are arranged on the protective cover body (21) opposite to each other and are provided with fastening structures corresponding to each other so as to be jointed with each other through the fastening structures; alternatively, the first and second electrodes may be,
The connecting part (22) comprises one fixing bandage (221, 222), and two ends of one fixing bandage (221, 222) are fixedly connected to the protective cover body (21) respectively.
11. The protection device (20) according to any one of claims 1 to 7, 9, 10, further comprising:
a detection unit (25) mounted in the housing chamber (21a) for acquiring position data of the pneumatic accessory (40) located within the housing chamber (21 a);
The processing unit is connected with the detection unit (25) and used for receiving the position data, comparing the position data with a preset threshold value and sending an alarm instruction when the position data is smaller than the preset threshold value;
And the alarm unit (26) is connected with the processing unit and used for receiving the alarm instruction and responding to the alarm instruction to send out a warning prompt.
12. The protection device (20) according to claim 11, wherein said detection unit (25) comprises: infrared pressure sensors or laser ranging sensors.
13. The protection device (20) according to one of claims 1 to 7, 9, 10, characterized in that the transverse cross section and/or the longitudinal cross section of the protective hood body (21) is shaped as a trapezoid, a semicircle, a rectangle or a triangle.
14. A blade sling, comprising:
The hoisting device (30) can support the blade; and
The protection device (20) according to any one of claims 1 to 13, said protection device (20) being removably connected to said lifting device (30) so as to enable said mouth (21b) to snap-fit against the outer wall (10) of said blade and to receive said pneumatic accessory (40) in said housing cavity (21 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711290.4A CN107673183B (en) | 2017-08-18 | 2017-08-18 | Protection device and blade hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711290.4A CN107673183B (en) | 2017-08-18 | 2017-08-18 | Protection device and blade hoist |
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| Publication Number | Publication Date |
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| CN107673183A CN107673183A (en) | 2018-02-09 |
| CN107673183B true CN107673183B (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710711290.4A Active CN107673183B (en) | 2017-08-18 | 2017-08-18 | Protection device and blade hoist |
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| CN104340861A (en) * | 2013-07-29 | 2015-02-11 | 西门子公司 | Blade gripping device |
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| WO2017071719A1 (en) * | 2015-10-30 | 2017-05-04 | Vestas Wind Systems A/S | Blade lifting method and apparatus |
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| JPWO2014076826A1 (en) * | 2012-11-16 | 2017-01-05 | 三菱重工業株式会社 | Wind turbine blade suspension structure, wind turbine blade suspension method, and wind turbine generator assembly method |
| CN206142647U (en) * | 2016-09-28 | 2017-05-03 | 迪皮埃复材构件（太仓）有限公司 | Blade lifts by crane uses root protection device |
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|---|---|---|---|---|
| HRP20120205T1 (en) * | 2009-01-30 | 2012-03-31 | Wilic S.A.R.L. | Wind power turbine blade packing and packing method |
| CN104340861A (en) * | 2013-07-29 | 2015-02-11 | 西门子公司 | Blade gripping device |
| CN204082230U (en) * | 2014-06-18 | 2015-01-07 | 河北省电力建设调整试验所 | A kind of steam turbine watt vibration sensor safety cover |
| DE202014105459U1 (en) * | 2014-11-13 | 2016-02-16 | Ematec Manfred Eberhard Maschinen- Und Greiftechnik E.K. | Rotorblatthalter |
| WO2017071719A1 (en) * | 2015-10-30 | 2017-05-04 | Vestas Wind Systems A/S | Blade lifting method and apparatus |
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| CN107673183A (en) | 2018-02-09 |
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Address after: No.107 Shanghai Road, Urumqi Economic and Technological Development Zone, Urumqi City, Xinjiang Uygur Autonomous Region Patentee after: Jinfeng Technology Co.,Ltd. Address before: No.107 Shanghai Road, Urumqi Economic and Technological Development Zone, Urumqi City, Xinjiang Uygur Autonomous Region Patentee before: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY Co.,Ltd. |