A wind power hybrid tower prefabricated tower section connection structure

Abstract

The present invention discloses a wind power hybrid tower prefabricated tower section connection structure, including a fixed plate, a pressing plate, a first fixing member and a second fixing member. The fixed plate includes an embedded plate, a connecting plate and an exposed plate. The embedded plate is embedded in the slice, the exposed plate is located outside the slice, and the exposed plate and the embedded plate are mutually displaced. The connecting plate connects the exposed plate and the embedded plate. The pressing plate covers the side wall of the slice and faces the embedded plate. The first fixing member is used to connect and fix the pressing plate with the embedded plate. The second fixing member is used to connect the exposed plates on two adjacent slices. The wind power hybrid tower prefabricated tower section connection structure can be smoothly constructed in winter, and the connection method is simple and fast, and will not weaken or damage the connection parts, thereby improving the stability of the overall tower section of the structure.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to a prefabricated tower section connection structure for a wind power hybrid tower. Background Art

[0002] In the field of wind power prefabricated towers, most prefabricated towers are currently in the form of full vertical, segmented and piece-by-piece. The so-called piece-by-piece means that the cylinder section of the hybrid tower is made up of multiple pieces and fixed by grouting. However, the grouting connection is easily affected by temperature and weather, and the construction period is long and the quality is difficult to guarantee. For this reason, the grouting-free dry connection piece-by-piece prefabricated assembled hybrid tower came into being. This method has the technical advantage of developing large single-unit capacity, large impeller diameter and high tower.

[0003] However, the existing grouting-free dry-connected prefabricated assembled concrete towers mostly adopt a combination connection method of embedded parts and bolts. This connection method often has the problems of difficult perforation alignment, high requirements for template accuracy, and cross-sectional weakening caused by connection in the concrete body of the tower section. In addition, this method also has the problem of bond slip between the bolts and the concrete and partial detachment of the concrete under repeated loads, which affects the bearing capacity and leads to large deformation in the later stage. It cannot be used for main load-bearing components with high seismic requirements and the problem of serious uneven force on the inner and outer segments, which is prone to local plate damage. Summary of the invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a prefabricated tower section connection structure for a wind turbine hybrid tower, which can be smoothly constructed in winter, and the connection method is simple and quick, and will not weaken or damage the connection parts of the fragments, thereby improving the stability of the overall tower section of the structure.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: a wind power hybrid tower prefabricated tower section connection structure, comprising:

[0006] A fixed plate, comprising an embedded plate, a connecting plate and an exposed plate, wherein the embedded plate is embedded in the slice, the exposed plate is located outside the slice, and the exposed plate and the embedded plate are staggered with each other, and the connecting plate connects the exposed plate and the embedded plate;

[0007] A pressing sheet, covering the side wall of the segment and facing the embedded plate;

[0008] A first fixing member is used to connect and fix the pressing sheet to the embedded plate; and

[0009] The second fixing member is used to connect the exposed plates on two adjacent slices.

[0010] Furthermore, the embedded plate is provided with a first mounting hole, and a through hole is provided at a corresponding position on the pressing sheet, and the first fixing member is inserted into the first mounting hole and the through hole at the same time to connect the embedded plate and the pressing sheet.

[0011] Furthermore, the fixed plate also includes a sleeve, which is inserted into the first mounting hole and fixedly connected to the first mounting hole, the first fixing member is an anchor bolt, and a thread matching the anchor bolt is provided in the sleeve.

[0012] Furthermore, a mounting groove is provided in the exposed plate, a movable plate can be slidably installed in the mounting groove, a second mounting hole is provided on the movable plate for the second fixing member to pass through, and a fixing device is installed on the exposed plate, and the fixing device can press the surface and side of the movable plate to fix the position of the movable plate relative to the exposed plate.

[0013] Furthermore, the fixing device includes a top surface pressing device and a side pressing device, the top surface pressing device is arranged on the surface of the exposed plate away from the other exposed plate, the top surface pressing device extends into the installation groove to press the surface of the movable plate, and the side pressing device is installed on the side of the exposed plate, and the side pressing device extends into the installation groove to press the side wall of the movable plate.

[0014] Furthermore, the movable plate is rectangular, and the side pressing devices press the four side walls of the movable plate respectively.

[0015] Furthermore, the side pressing device includes two pressing screws and two groups of pressing assemblies, two side grooves connected to the mounting grooves are opened in the exposed plate, and the two groups of pressing assemblies are respectively arranged in the two side grooves, and the two pressing screws and the two groups of pressing assemblies respectively press the four side walls of the movable plate.

[0016] The two push rods are respectively connected with the left-hand thread and the right-hand thread on the double-threaded rod, and the two push rods are respectively connected with the left-hand thread and the right-hand thread on the double-threaded rod. The two push rods are respectively connected with the left-hand thread and the right-hand thread on the double-threaded rod. The two push rods are respectively connected with the left-hand thread and the right-hand thread on the double-threaded rod. The push rod is arranged on the push plate and is located on the side away from the double-threaded rod. The side wall of the two push screws is deep into the mounting groove from the side wall of the exposed plate and can press the other two side walls of the movable plate.

[0017] Furthermore, the side pressing device also includes a guide plate, which is arranged parallel to the push plate, and the two ends of the guide plate are respectively connected to the inner wall of the side groove, and a guide hole is opened on the guide plate, and the push rod can slide through the guide hole.

[0018] Furthermore, guide grooves are provided on both side walls of the side groove, and both ends of the push plate are slidably connected to the guide grooves.

[0019] Beneficial effects of the present invention:

[0020] The above-mentioned wind power hybrid tower prefabricated tower section connection structure includes a fixed plate, a pressing plate, a first fixing member and a second fixing member. The fixed plate includes an embedded plate, a connecting plate and an exposed plate. The embedded plate is embedded in the slice, the exposed plate is located outside the slice, and the exposed plate and the embedded plate are staggered with each other. The connecting plate connects the exposed plate and the embedded plate; the pressing plate covers the side wall of the slice and faces the embedded plate; the first fixing member is used to connect and fix the pressing plate to the embedded plate; the second fixing member is used to connect the exposed plates on two adjacent slices.

[0021] The prefabricated tower section connection structure of the wind turbine hybrid tower does not need to be connected within the segments. The embedded plates and pressing plates can expand the area of ​​the load-bearing part, thereby avoiding the problem of bonding slip between the bolts of the segment anchoring part and the concrete and partial falling off of the concrete caused by the traditional fixing method, thereby affecting the overall bearing capacity and stability. At the same time, this method does not require grouting at the connection site, can be smoothly constructed in winter, and the connection method is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for use in the specific embodiments. In all the drawings, each component or board is not necessarily drawn according to the actual scale.

[0023] Figure 1 A schematic diagram of a prefabricated tower section connection structure for a wind power hybrid tower provided by an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of a wind power hybrid tower prefabricated tower section connection structure in which a fixed plate and a pressing sheet are connected together is shown;

[0025] Figure 3 for Figure 1 The internal schematic diagram of an exposed plate in a prefabricated tower section connection structure of a wind power hybrid tower is shown;

[0026] Figure 4 for Figure 1 A schematic diagram of a wind power hybrid tower prefabricated tower section connection structure in which a movable plate is in a free state is shown;

[0027] Figure 5 for Figure 1 A schematic diagram of a double threaded rod in a prefabricated tower section connection structure of a wind power hybrid tower is shown;

[0028] Reference numerals:

[0029] 100, fixed plate; 110, embedded plate; 120, connecting plate; 130, exposed plate; 131, mounting groove; 132, side groove; 140, movable plate; 141, second mounting hole; 150, sleeve;

[0030] 200, tableting;

[0031] 300, a first fixing member;

[0032] 400, second fixing member; 410, fastening bolt; 420, nut;

[0033] 500, fixing device; 510, top surface pressing device; 520, side pressing device; 521, pressing screw; 522, pressing assembly; 5221, double threaded rod; 5222, push rod; 5223, slider; 5224, push plate; 5225, push rod; 5226, guide plate. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0035] See also Figures 1 to 5 The present invention provides a wind power hybrid tower prefabricated tower section connection structure, including a fixed plate 100, a pressing sheet 200, a first fixing member 300 and a second fixing member 400.

[0036] Specifically, the fixed plate 100 is arranged on the slices of the tower section, and the fixed plates 100 on two adjacent slices are arranged oppositely. The fixed plate 100 includes an embedded plate 110, an exposed plate 130 and a connecting plate 120. The embedded plate 110 is embedded in the slice, the exposed plate 130 is located outside the slice, and the exposed plate 130 and the embedded plate 110 are staggered with each other, and the connecting plate 120 connects the exposed plate 130 and the embedded plate 110. The entire fixed plate 100 can be Z-shaped or wavy. When the embedded plate 110 is embedded in the slice, it is spaced apart from the edge of the slice, which is convenient for the embedding of the embedded plate 110. At the same time, during use, the local force-bearing area of ​​the slice can be increased, thereby avoiding the concrete part where the embedded plate 110 is embedded to be damaged and detached. Note: During embedding, it is necessary to pay attention to welding the embedded plate 110 to the steel bars in the segment. At the same time, a position for the first fixing member 300 to pass through needs to be reserved in the segment.

[0037] The pressing piece 200 covers the side wall of the slice and faces the embedded plate 110. The first fixing piece 300 is used to connect and fix the pressing piece 200 to the embedded plate 110. When connecting, the first fixing piece 300 needs to be extended into the slice to connect with the embedded plate 110. The second fixing piece 400 is used to connect the exposed plates 130 on two adjacent slices, and the connection of the two adjacent slices is completed by connecting the first fixing piece 300 and the second fixing piece 400.

[0038] In this way, it is not necessary to connect in the segment, thus reducing the problem of bonding slip between the bolts of the segment anchoring part and the concrete and partial fall-off of the concrete, which affects the overall bearing capacity and stability, caused by the traditional fixing method. In addition, the force is distributed by the embedded plate 110 and the pressing plate 200, which can expand the area of ​​the force-bearing part and reduce the risk of damage to the connection part; at the same time, in this way, grouting is not required at the connection site, and the construction can be smoothly carried out in winter, and the connection method is simple and fast.

[0039] In this embodiment, a first mounting hole is formed on the embedded plate 110, and a through hole is formed at a corresponding position on the pressing plate 200. The first fixing member 300 is inserted into both the first mounting hole and the through hole to connect the embedded plate 110 and the pressing plate 200.

[0040] See also Figure 2As a preferred embodiment, the connection structure further includes a sleeve 150. The sleeve 150 is inserted into the first mounting hole and fixedly connected to the first mounting hole. Specifically, the fixed connection method can be selected as welding, which can improve rigidity and stability. The first fixing member 300 is an anchor bolt, and a thread matching the anchor bolt is provided in the sleeve 150.

[0041] During construction, the embedded plate 110 is first welded to the steel bars in the segment, then the sleeve 150 is vertically inserted into the first mounting hole on the embedded plate 110, and then the sleeve 150 is welded to the embedded plate 110, and finally grouting is cast to fix it. The following advantages are achieved by using this method of embedding the sleeve 150: first, when burying the embedded plate 110, it is convenient not to reserve a long passage for the first fixing member 300 to pass through, which can improve the convenience of construction; second, the sleeve 150 is connected with the anchor bolt, which can reduce the response of the connection under repeated loads, and reduce the eccentricity of the force, so that the overall component has a higher bearing capacity.

[0042] In addition, in other embodiments, the first fixing member 300 and the sleeve 150 may also be connected by other connection methods such as clamping or riveting.

[0043] See also Figure 3 and Figure 4 In this embodiment, a mounting groove 131 is provided in the exposed plate 130, and a movable plate 140 can be slidably installed in the mounting groove 131. A second mounting hole 141 for the second fixing member 400 to pass through is provided on the movable plate 140. A fixing device 500 is installed on the exposed plate 130, and the fixing device 500 can press the surface and side of the movable block to fix the position of the movable plate 140 relative to the exposed plate 130. In a specific implementation, the second fixing member 400 can be selected to be put into the structure by fastening bolts 410 combined with nuts 420. The fastening bolts 410 are inserted into the two second mounting holes 1, and the nuts 420 are threadedly connected to the fastening bolts 410 to connect and fix the two exposed plates 130.

[0044] In this way, during installation, the two second mounting holes 141 can be flexibly aligned to avoid the problem that the second fixing member 400 cannot be inserted into the two second mounting holes 141 for fixing due to processing accuracy or installation accuracy problems. The fixing device 500 is used to fix the movable plate 140. In the initial state, the movable plate 140 is in a free state. After the second fixing member 400 is inserted into the two second mounting holes 141 and fixed, the position of the movable plate 140 can be fixed by the fixing device 500.

[0045] See also Figure 1Specifically, the fixing device 500 includes a top pressing device 510 and a side pressing device 520. The top pressing device 510 is disposed on the surface of the exposed plate 130 away from the other exposed plate 130, and the top pressing device 510 extends into the mounting groove 131 to press the surface of the movable plate 140. The side pressing device 520 is installed on the side of the exposed plate 130, and the side pressing device 520 extends into the mounting groove 131 to press the side wall of the movable plate 140.

[0046] In specific implementation, the top surface pressing device 510 can use a common tightening screw, and the tightening screw is vertically inserted into the mounting groove 131 to tighten the movable plate 140. The number of tightening screws can also be selected to be multiple. Of course, other tightening methods can also be used, that is, as long as the movable plate 140 can be tightened in a direction perpendicular to the surface of the movable plate 140.

[0047] See also Figure 3 and Figure 4 In this embodiment, the movable plate 140 is rectangular, and the side pressing device 520 presses the four side walls of the movable plate 140 respectively. The side pressing device 520 includes two pressing screws 521 and two sets of pressing components 522. Two side grooves 132 connected to the mounting groove 131 are opened in the exposed plate 130, and the two sets of pressing components 522 are respectively arranged in the two side grooves 132. The two pressing screws 521 and the two sets of pressing components 522 press the four side walls of the movable plate 140 respectively.

[0048] The top surface pressing device 510 and the side surface pressing device 520 can form a horizontal and vertical pressing mode for the movable plate 140, so as to prevent the movable plate 140 from being unstable during use, thereby affecting the stability of the entire structure.

[0049] Please continue to see Figure 3 and Figure 4Specifically, the top pressure assembly 522 includes a double threaded rod 5221, a push rod 5222, a slider 5223, a push plate 5224 and a push rod 5225. The double threaded rods 5221 of the two groups of top pressure assemblies can be rotated from the side wall of the exposed plate 130 to penetrate into the side groove 132. The outer wall of the tail of the double threaded rod 5221 is provided with a left-handed thread and a right-handed thread, and the left-handed thread and the right-handed thread are arranged oppositely. The push plate 5224 is located in the side groove 132, and is arranged parallel to the double threaded rod 5221, and is located on a side close to the installation groove 131. There are two push rods 5222, and the two push rods 5222 are arranged in an eight-shaped shape relative to each other, and one end of the two push rods 5222 is hinged to the push rod 5222, and the other end of the two push rods 5222 is hinged with a slider 5223, and the two sliders 5223 are respectively connected to the left-handed thread and the right-handed thread on the double threaded rod 5221. The push rod 5225 is arranged on the push plate 5224 and is located on the side away from the double threaded rod 5221, and can press vertically on the side wall of the movable plate 140. The two pressing screws penetrate into the mounting groove 131 from the side wall of the exposed plate 130, and can press on the other two side walls of the movable plate 140.

[0050] After the position of the movable plate 140 is adjusted, a set of pressing screws 521 and pressing components 522 at the relative positions are first fixed. The specific operation is: rotate the pressing screw 521 and the double-threaded rod 5221, and the pressing screw 521 moves toward the movable plate 140 until it abuts against the movable plate 140. Then rotate the double-threaded rod 5221. Under the action of the left-handed thread and the right-handed thread, the two sliders 5223 move toward each other and push the push plate 5224 and the push rod 5225 to move toward the movable plate 140 until they abut against the movable plate 140. Then, the pressing of the two opposite sides of the movable plate 140 can be completed. The same operation method is used to fix the remaining set of pressing screws 521 and pressing components 522 to fix the other two opposite sides of the movable plate 140. When it is necessary to loosen, the pressing screw 521 and the double-threaded rod 5221 are rotated in the opposite direction. Through the two pressing screws 521 and the two sets of pressing components 522 , the movable plate 140 can be pressed from the four sidewall directions to fix the position of the movable plate 140 .

[0051] Please continue to see Figure 3 and Figure 4 As a preferred embodiment, the side pressing device 520 further includes a guide plate 5226. The guide plate 5226 is arranged parallel to the push plate 5224, and the two ends of the guide plate 5226 are respectively connected to the inner side wall of the side groove 132. The guide plate 5226 is provided with a guide hole, and the push rod 5222 can slide through the guide hole. The guide of the guide plate 5226 can prevent the push rod 5225 from deviating.

[0052] As a more preferred embodiment, guide grooves are provided on both side walls of the side groove 132, and both ends of the push plate 5224 are slidably connected to the guide grooves. The guide grooves guide the push plate 5224 again, further improving the stability of the push rod 5225.

[0053] The usage of the above-mentioned wind power hybrid tower prefabricated tower section connection structure is as follows:

[0054] During installation, the embedded plate 110 is first welded to the steel bars in the segment, and then the sleeve 150 is vertically inserted into the first installation hole on the embedded plate 110, and then the sleeve 150 is welded to the embedded plate 110, and finally grouting is poured to fix them; after the embedded plate 110 and the sleeve 150 are fixed, the pressing sheet 200 is covered on the side wall of the segment, and the through hole is aligned with the sleeve 150, and then the anchor bolt is inserted from the through hole into the sleeve 150, and the anchor bolt is rotated until the anchor bolt tightly presses the movable plate 140.

[0055] Next, first adjust the top surface pressing device 510 and the side pressing device 520 to make the movable plate 140 movable, then insert the fastening bolt 410 from one of the second mounting holes 141, manually move the other second mounting hole 141 so that the second mounting hole 141 on it is aligned with the fastening bolt 410, then pass the fastening bolt 410 from the other second mounting hole 141, then tighten the nut 420 until the two exposed plates 130 are clamped;

[0056] Finally, the top surface pressing device 510 and the four sets of side pressing devices 520 are adjusted respectively so that the top surface pressing device 510 and the side pressing devices 520 press against the movable plate 140 from the top surface of the movable plate 140 and the four side walls of the movable plate 140, and finally the position of the movable plate 140 is fixed.

[0057] The above-mentioned wind power tower prefabricated tower segment connection structure does not need to be connected within the segment. The embedded plate 110 and the pressing plate 200 can expand the area of ​​the force-bearing part, thereby reducing the bonding slip between the anchor bolts and the concrete and the local fall-off of the concrete, which affects the overall bearing capacity and stability. At the same time, this method does not require grouting at the connection site, can be smoothly constructed in winter, and the connection method is simple and fast.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for the technical features of the board or the entire board therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A wind power hybrid tower prefabricated tower section connection structure, characterized in that: include: A fixed plate, comprising an embedded plate, a connecting plate and an exposed plate, wherein the embedded plate is embedded in the slice, the exposed plate is located outside the slice, and the exposed plate and the embedded plate are staggered with each other, and the connecting plate connects the exposed plate and the embedded plate to form a Z-shaped or wavy fixed plate; A pressing sheet, covering the side wall of the segment and facing the embedded plate; A first fixing member, used for connecting and fixing the pressing sheet to the embedded plate; and The second fixing member is used to connect the exposed plates on two adjacent slices.

2. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 1 is characterized in that: The embedded plate is provided with a first mounting hole, and a through hole is provided at a corresponding position on the pressing sheet, and the first fixing member is inserted into the first mounting hole and the through hole at the same time to connect the embedded plate and the pressing sheet.

3. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 2 is characterized in that: The fixed plate also includes a sleeve, which is inserted into the first mounting hole and fixedly connected to the first mounting hole. The first fixing member is an anchor bolt, and a thread matching the anchor bolt is provided in the sleeve.

4. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 1 is characterized in that: The exposed plate is provided with an installation groove in which a movable plate can be slidably installed. The movable plate is provided with a second installation hole for the second fixing member to pass through. A fixing device is installed on the exposed plate, and the fixing device can press the surface and side of the movable plate to fix the position of the movable plate relative to the exposed plate.

5. The wind power hybrid tower prefabricated tower section connection structure according to claim 4 is characterized in that: The fixing device includes a top surface pressing device and a side surface pressing device. The top surface pressing device is arranged on the surface of the exposed plate away from the other exposed plate, and the top surface pressing device extends into the installation groove to press the surface of the movable plate. The side surface pressing device is installed on the side of the exposed plate, and the side surface pressing device extends into the installation groove to press the side wall of the movable plate.

6. The wind power hybrid tower prefabricated tower section connection structure according to claim 5 is characterized in that: The movable plate is rectangular, and the side pressing devices press the four side walls of the movable plate respectively.

7. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 6 is characterized in that: The side pressing device includes two pressing screws and two groups of pressing assemblies. Two side grooves connected to the mounting grooves are opened in the exposed plate. The two groups of pressing assemblies are respectively arranged in the two side grooves. The two pressing screws and the two groups of pressing assemblies respectively press the four side walls of the movable plate.

8. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 7 is characterized in that: The pressing assembly comprises a double-threaded rod, a push rod, a slider, a push plate and a push rod, the double-threaded rods of the two groups of the pressing assemblies can be rotatably penetrated into the side groove from the side wall of the exposed plate respectively, and the outer wall of the tail of the double-threaded rod is provided with a left-handed thread and a right-handed thread, and the left-handed thread is arranged opposite to the right-handed thread, the push plate is located in the side groove and is arranged parallel to the double-threaded rod and is located on one side close to the mounting groove, the push rod has two, the two push rods are arranged in an eight-shaped shape relative to each other, and one end of the two push rods is hinged to the push rod, and the other ends of the two push rods are hinged to the slider, the two sliders are respectively connected with the left-handed thread and the right-handed thread on the double-threaded rod, the push rod is arranged on the push plate and is located on the side away from the double-threaded rod, and can press the side wall of the movable plate; the two pressing screws penetrate into the mounting groove from the side wall of the exposed plate and can press the other two side walls of the movable plate.

9. The wind power hybrid tower prefabricated tower section connection structure according to claim 8, characterized in that: The side pressing device also includes a guide plate, which is arranged parallel to the push plate, and the two ends of the guide plate are respectively connected to the inner wall of the side groove. The guide plate is provided with a guide hole, and the push rod can slide through the guide hole.

10. The wind power hybrid tower prefabricated tower section connection structure according to claim 8, characterized in that: Guide grooves are provided on both side walls of the side groove, and both ends of the push plate are slidably connected to the guide grooves.

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