Node connector of concrete filled steel tube wind power tower

Abstract

The invention discloses a node connector of a concrete filled steel tube wind power tower, and relates to the technical field of wind power towers, the node connector comprises a node connecting pipe, bolt-sphere connecting mechanisms are fixedly connected to three edges of the outer wall of the node connecting pipe respectively, and steel tube connecting mechanisms are arranged on the inner walls of the sides, away from the node connecting pipe, of the three bolt-sphere connecting mechanisms; each bolt-ball connecting mechanism comprises a bolt-ball connecting mechanism shell, a second fixing groove is formed in the top of each bolt-ball connecting mechanism shell, and a second fixing groove is formed in the top of each bolt-ball connecting mechanism shell. The node connector is compact in structure, the stability and the wind resistance of the connecting part are enhanced, the connecting failure risk caused by environmental factors is effectively reduced, quick and accurate butt joint can be achieved through the arrangement of the bolt-sphere connecting mechanism, and the construction difficulty and the safety risk of high-altitude operation are remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind power towers, in particular to a node connector of a steel tube concrete wind power tower. Background Art

[0002] Steel tube concrete wind turbine tower refers to a wind turbine tower structure that combines steel tubes and concrete. This tower utilizes the high strength of steel tubes and the compressive resistance of concrete. Through reasonable design and construction, the tower has better stability and durability when bearing loads such as wind force and deadweight. Compared with traditional steel or concrete towers, steel tube concrete wind turbine tower has obvious advantages in material cost, construction efficiency and structural performance.

[0003] According to the patent document: CN110173148A, a universal attachment ball-type branch node connector for a lattice-type steel tube concrete wind power tower is disclosed, and the node connector includes an attachment plate, a tube body, a bolt ball, a locking piece, a connecting rod, a connecting ball and a support rod, the attachment plate is connected to the tower column surface by fixing bolts, the tube body is vertically arranged on the outer wall of the attachment plate, the locking piece is installed on the outer end of the tube body and the locking piece has a center hole, the bolt ball is rotatably arranged in the tube body and the bolt ball partially extends out of the tube body from the center hole of the locking piece, the connecting ball is detachably connected to the extending part of the bolt ball through the connecting rod, and the connecting ball has an internal threaded hole. The node connector provided by the present invention avoids the influence of the aging, shrinkage, and expansion deformation of the tower on the connection strength between the tower and the attachment plate; the use of connecting rods, connecting balls and support rods to cooperate to connect multiple webs helps to reduce the end points of the connection between the web and the bolt ball, thereby reducing the restriction on the rotation angle of the bolt ball.

[0004] During the tower construction process, when the tower steel pipes at both ends are connected to the surrounding steel pipes through node connectors, it is usually necessary to rely on hoisting devices to lift the steel pipes to the predetermined position to achieve precise docking. However, during the hoisting operation, the steel pipes are easily affected by external environmental factors, especially wind conditions, which causes unnecessary swings of the steel pipes during the docking stage, thereby causing docking position deviation problems. In response to this situation, construction workers need to continuously adjust the position of the steel pipes in the high-altitude working environment and tighten them with the help of connecting grooves and bolts. This process not only significantly increases the difficulty of construction, but also increases the safety risks during the operation. In addition, the tower structure is exposed to the natural environment for a long time and is subjected to harsh conditions such as wind and sun. It is prone to material aging, shedding, shrinkage, and expansion and deformation. These physical changes will directly affect the stability of the connection between the tower and the sleeve, increase the risk of connection failure, and pose a potential threat to the stability of the overall structure. Summary of the invention

[0005] The purpose of the present invention is to provide a node connector for a steel tube concrete wind turbine tower to solve the problem in the prior art that during the lifting operation, the steel tube is easily affected by external environmental factors, especially the interference of wind conditions, causing unnecessary swinging of the steel tube during the docking stage, thereby causing the docking position deviation. In view of this situation, the construction personnel need to continuously adjust the position of the steel tube in the high-altitude working environment, and tighten the connection with the help of connecting grooves and bolts. This process not only significantly increases the difficulty of construction, but also aggravates the problem of safety risks during the operation.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a node connector of a steel tube concrete wind power tower, comprising a node connection pipe, wherein three sides of the outer wall of the node connection pipe are respectively fixedly connected with bolt ball connection mechanisms, and the inner walls of the three bolt ball connection mechanisms away from the node connection pipe are all provided with steel pipe connection mechanisms; The bolt-ball connection mechanism comprises a bolt-ball connection mechanism housing, a second fixing groove is provided on the top of the bolt-ball connection mechanism housing, a bolt is threadedly connected to the inner wall of the second fixing groove, fixing grooves are provided on both sides of the bolt-ball connection mechanism housing, second bolts are threadedly connected to the inner walls of the two fixing grooves, and one end of the second bolt extends to the outer wall of the bolt-ball connection mechanism housing and is threadedly connected to a nut; The steel pipe connecting mechanism includes a steel pipe connecting front pipe, the outer wall of the steel pipe connecting front pipe is provided with a bolt groove in an annular array, one end of the steel pipe connecting front pipe close to the node connecting pipe is fixedly connected to a limiting pipe, the outer wall of the limiting pipe is provided with a limiting groove in an annular array, and the inner wall of the limiting pipe is movably connected with a fixing rod.

[0007] Preferably, the fixing rod comprises a threaded rod, one end of the threaded rod away from the node connecting tube is fixedly connected to the inner wall of the limiting tube near the end of the steel pipe connecting front tube, the other end of the threaded rod away from the limiting tube extends to the outer wall of the limiting tube and is fixedly connected with a bolt ball, the outer wall of the bolt ball is movably connected to the inner wall of the bolt ball connecting mechanism housing, bolt ball grooves are respectively provided on both sides and the top of the outer wall of the bolt ball, the inner wall of the bolt ball groove at the top is threadedly connected to the outer wall of one side of the bolt extending to the inner wall of the bolt ball connecting mechanism housing, and the inner walls of the bolt ball grooves on the left and right sides are respectively threadedly connected to the outer walls on both sides of the second bolt on the inner wall of the bolt ball connecting mechanism housing.

[0008] Preferably, the threaded rod is threadedly connected to an internally threaded push shaft on one side of the outer wall of the limiting tube, the internally threaded push shaft is rotatably connected to an external push tube on the side away from the bolt ball, the outer wall of the external push tube is slidably connected to the outer wall of the threaded rod, one end of the external push tube away from the internally threaded push shaft extends to the inner wall of the limiting tube and a plurality of push rods are fixedly connected to the annular array, one end of the plurality of push rods away from the external push tube is fixedly connected to the push shaft, and the outer wall of the threaded rod is fixedly connected to a second connecting shaft on one side of the inner wall of the limiting tube.

[0009] Preferably, the outer walls of the second connecting shaft and the push shaft are fixedly connected with multiple hinge blocks in a circular array, the outer walls of the two groups of hinge blocks are rotatably connected with rotating rods, and the sides of the two groups of rotating rods away from the hinge blocks are rotatably connected with limited arc plates.

[0010] Preferably, the node connecting pipe comprises a node connecting pipe shell, and the top and the bottom of the inner wall of the node connecting pipe shell are respectively slidably connected with auxiliary connecting pipes.

[0011] Preferably, the node connecting tube shell includes a node connecting tube body, the top and bottom of three sides of the outer wall of the node connecting tube body are fixedly connected to two limit blocks, the inner walls of the six groups of limit tubes are slidably connected to limit rods, the top and bottom of three sides of the outer wall of the node connecting tube body are fixedly connected to reinforced semicircular tube hinge blocks, the inner walls of the three groups of reinforced semicircular tube hinge blocks are rotatably connected to reinforced semicircular tube rotating rods, the opposite surfaces of the three groups of reinforced semicircular tube rotating rods are fixedly connected to reinforced semicircular tubes, and the outer walls of the three groups of reinforced semicircular tube rotating rods are movably connected to the inner sides of the six groups of limit blocks.

[0012] Preferably, the left and right groups of the three groups of reinforced semicircular tubes away from the node connecting tube body are fixedly connected with bolt fixing plates, the top and bottom of the six groups of bolt fixing plates are provided with reinforcement grooves, and the four sides of the top and bottom of the outer wall of the node connecting tube body are provided with two node connecting tube bolt grooves.

[0013] Preferably, a rear slide groove is opened on the rear side of the node connecting tube body, and the top and bottom of the rear side of the node connecting tube body are fixedly connected with a bidirectional screw connecting block, the inner walls of the two bidirectional screw connecting blocks are threadedly connected with a bidirectional screw, and the bottom end of the bidirectional screw is fixedly connected with a turning handle.

[0014] Preferably, the two auxiliary connecting tubes each include an auxiliary connecting tube shell, the outer walls of the two auxiliary connecting tube shells are respectively slidably connected to the top and bottom of the inner wall of the node connecting tube body, two auxiliary connecting tube bolt grooves are provided at the top and bottom of the four sides of the outer walls of the two auxiliary connecting tube shells, and a transmission block is fixedly connected to the side of the rear sides of the two auxiliary connecting tube shells that are close to each other.

[0015] Preferably, the rear sides of the two transmission blocks extend to the outer wall of the node connecting tube body through the rear slide groove and are respectively threadedly connected to the top and bottom of the outer wall of the bidirectional screw rod, and the two transmission blocks extend to the left and right sides of the outer wall of the node connecting tube body and are fixedly connected with side fixing plates, and the front and rear sides of the tops of the two groups of side fixing plates are provided with side fixing plate fixing grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This application provides multiple bolt-ball connection mechanisms, steel pipe connection mechanisms and reinforced semicircular pipes, so that the node connector is more compact in structure, the stability and wind resistance of the connection parts are enhanced, and the risk of connection failure caused by environmental factors is effectively reduced. At the same time, through the setting of the bolt-ball connection mechanism, fast and accurate docking can be achieved, which significantly reduces the construction difficulty and the safety risk of high-altitude operations; 2. The present application can fasten the connection between the two sections of the tower poles by providing a node connection pipe shell and a secondary connection pipe, and can also make it more convenient to adjust and fix the towers at different heights. The fixing effect of the node connector is further improved by the bolt fixing plate and the reinforcement groove, ensuring the stability and reliability of the connection part during long-term use; 3. The present application further enhances the structural strength and torsion resistance of the node connector by providing a reinforced semi-circular tube hinge block and a reinforced semi-circular tube rotating rod, thereby ensuring the stability of the tower under severe weather conditions; 4. The present application provides a bidirectional screw connection block and a handlebar, which makes the adjustment of the node connector more convenient and precise. Construction workers can operate the handlebar on the ground and adjust the position of the secondary connecting pipe by rotating the bidirectional screw, thereby achieving fast and precise installation of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main three-dimensional structure of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 2 It is a schematic diagram of the main body three-dimensional separation structure of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 3 It is a three-dimensional structural schematic diagram of a bolt ball connection mechanism and a steel tube connection mechanism of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of a bolt-ball connection mechanism of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of a steel tube connection mechanism of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 6It is a schematic diagram of a three-dimensional separation structure of a steel tube connection mechanism of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of a fixing rod of a node connector of a steel tube concrete wind power tower according to the present invention; Figure 8 It is a schematic diagram of a three-dimensional separation structure of a node connection pipe of a node connector of a steel tube concrete wind power tower according to the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of a node connection pipe shell of a node connector of a steel tube concrete wind power tower according to the present invention; Fig.10 The present invention is a schematic diagram of the three-dimensional structure of a secondary connecting pipe of a node connector of a steel tube concrete wind power tower.

[0018] Numbers in the figure: 1, node connecting pipe; 11, node connecting pipe shell; 111, node connecting pipe body; 112, node connecting pipe bolt groove; 113, limit block; 114, limit rod; 115, reinforced semicircular pipe hinge block; 116, reinforced semicircular pipe rotating rod; 117, reinforced semicircular pipe; 118, bolt fixing plate; 119, reinforcement groove; 1110, rear slide groove; 1111, two-way screw rod connecting block; 1112, two-way screw rod; 1113, turning handle; 12, auxiliary connecting pipe; 121, auxiliary connecting pipe shell; 122, auxiliary connecting pipe bolt groove; 123, transmission block; 124, side fixing plate; 125, Side fixing plate fixing groove; 2. Bolt ball connection mechanism; 21. Bolt ball connection mechanism housing; 22. Fixing groove; 23. Second fixing groove; 24. Bolt; 25. Second bolt; 26. Nut; 3. Steel pipe connection mechanism; 31. Steel pipe connected to front pipe; 32. Bolt groove; 33. Limiting tube; 34. Limiting groove; 35. Fixing rod; 351. Threaded rod; 352. Bolt ball; 353. Bolt ball slot; 354. Internal threaded push shaft; 355. External push tube; 356. Push rod; 357. Push shaft; 358. Articulated block; 359. Rotating rod; 3510. Second connecting shaft; 3511. Limiting arc plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Figure 1-2As shown, the present invention provides a technical solution for a node connector of a steel tube concrete wind power tower, including a node connecting tube 1, wherein three sides of the outer wall of the node connecting tube 1 are respectively fixedly connected with bolt ball connecting mechanisms 2, and the inner walls of the three bolt ball connecting mechanisms 2 away from the node connecting tube 1 are all provided with steel tube connecting mechanisms 3.

[0021] See also Figure 3-9The bolt-ball connection mechanism 2 comprises a bolt-ball connection mechanism housing 21, a second fixing groove 23 is provided at the top of the bolt-ball connection mechanism housing 21, a bolt 24 is threadedly connected to the inner wall of the second fixing groove 23, fixing grooves 22 are respectively provided on both sides of the bolt-ball connection mechanism housing 21, second bolts 25 are threadedly connected to the inner walls of the two fixing grooves 22, one end of the second bolt 25 extends to the outer wall of the bolt-ball connection mechanism housing 21 and is threadedly connected to a nut 26, and the steel pipe connection mechanism 3 comprises a steel pipe connection front pipe 31, a bolt groove 32 is provided in an annular array on the outer wall of the steel pipe connection front pipe 31, and a limiting pipe 33 is fixedly connected to one end of the steel pipe connection front pipe 31 near the node connection pipe 1, and a limiting groove is provided in an annular array on the outer wall of the limiting pipe 33 34, the inner wall of the limiting tube 33 is movably connected with a fixing rod 35, and the fixing rod 35 includes a threaded rod 351, and one end of the threaded rod 351 away from the node connection tube 1 is fixedly connected to the inner wall of the limiting tube 33 near the end of the steel pipe connection front tube 31, and the end of the threaded rod 351 away from the limiting tube 33 extends to the outer wall of the limiting tube 33 and is fixedly connected with a bolt ball 352, and the outer wall of the bolt ball 352 is movably connected to the inner wall of the bolt ball connection mechanism housing 21, and bolt ball clamping grooves 353 are respectively provided on both sides and the top of the outer wall of the bolt ball 352, and the inner wall of the top bolt ball clamping groove 353 is threadedly connected to the outer wall of one side of the bolt 24 extending to the inner wall of the bolt ball connection mechanism housing 21, and the inner walls of the bolt ball clamping grooves 353 on the left and right sides are respectively threadedly connected to The second bolt 25 is on the outer wall of both sides of the inner wall of the bolt ball connection mechanism housing 21, the threaded rod 351 is threadedly connected with an internal threaded push shaft 354 on one side of the outer wall of the limiting tube 33, the internal threaded push shaft 354 is rotatably connected with an external push tube 355 on the side away from the bolt ball 352, the outer wall of the external push tube 355 is slidably connected to the outer wall of the threaded rod 351, one end of the external push tube 355 away from the internal threaded push shaft 354 extends to the inner wall of the limiting tube 33 and is fixedly connected with a plurality of push rods 356 in an annular array, one end of the plurality of push rods 356 away from the external push tube 355 is fixedly connected with a push shaft 357, the outer wall of the threaded rod 351 is fixedly connected with a second connecting shaft 3510 on one side of the inner wall of the limiting tube 33, and the second connecting shaft 3510 and the outer wall of the push shaft 357 are both annular The node connection tube 1 comprises a node connection tube shell 11, and the top and the bottom of the inner wall of the node connection tube shell 11 are respectively slidably connected with the auxiliary connection tube 12, and the node connection tube shell 11 comprises a node connection tube body 111, and the top and the bottom of the outer wall of the node connection tube body 111 are respectively slidably connected with two limit blocks 113, and the inner walls of the six groups of limit tubes 33 are slidably connected with the limit rods 114, and the top and the bottom of the outer wall of the node connection tube body 111 are respectively slidably connected with the reinforced semicircular tube hinge blocks 115,The inner walls of the three groups of reinforced semicircular tube hinge blocks 115 are rotatably connected with reinforced semicircular tube rotating rods 116, and the opposite surfaces of the three groups of reinforced semicircular tube rotating rods 116 are fixedly connected with reinforced semicircular tubes 117. The outer walls of the three groups of reinforced semicircular tube rotating rods 116 are movably connected to the inner sides of the six groups of limit blocks 113. The left and right groups of the three groups of reinforced semicircular tubes 117 away from the node connection pipe body 111 are fixedly connected with bolt fixing plates 118. The top and bottom of the six groups of bolt fixing plates 118 are provided with reinforcement grooves 119. The four sides of the top and bottom of the outer wall of the node connection pipe body 111 are provided with two node connection pipe bolt grooves 112. When the three sides of the steel pipe need to be connected after the node is connected, first remove the bolt 24 and the second bolt 25 to release the limit of the inner wall bolt ball 352 of the bolt ball connection mechanism housing 21, and then the bolt ball 352 can be rotated on the inner wall of the bolt ball connection mechanism housing 21 to adjust the steel pipe connection mechanism 3 to the most suitable position for connecting the steel pipe and the best fixing effect, and then the bolt 24 and the second bolt 25 are re-fixed through the bolt ball groove 353 on the outer wall of the bolt ball 352 to fix the bolt ball 352, and one end of the steel pipe is inserted into the outer wall of the steel pipe connection front pipe 31 and the limiting pipe 33, and then the staff rotates the internal threaded push shaft 354 with a wrench, and the internal threaded push shaft 354 engages with the outer wall of the threaded rod 351 to drive the external push pipe 355 to move toward the inner wall of one side of the limiting pipe 33, thereby pushing the push shaft 35 through the push rod 356. When the outer wall of the threaded rod 351 moves and the push shaft 357 moves toward one side of the second connecting shaft 3510, the push shaft 357 and the multiple rotating rods 359 on the outer wall of the second connecting shaft 3510 are driven to rotate and change the angle, thereby pushing the limiting arc plate 3511 to extend to the outer wall of the limiting tube 33 through the limiting groove 34. The multiple limiting arc plates 3511 expand outward through the multiple limiting grooves 34 to support the inner wall of the steel pipe. When the inner wall of the steel pipe is fixed, the staff can continue to use bolts to reinforce the connection between the steel pipe and the steel pipe connecting mechanism 3 through the multiple bolt grooves 32 opened on the outer wall of the steel pipe connecting front tube 31, thereby ensuring the stability and safety of the entire wind power tower. In the actual operation process, the staff needs to ensure the tightness of the bolts 24 and the second bolts 25 to prevent loosening under the action of wind. After completing the preliminary fixation of the steel pipe, the staff also needs to reinforce the node connection pipe 1. First, the limit rod 114 is pulled out of the inner wall of the two limit blocks 113 to release the limit on the reinforcing semicircular pipe rotating rod 116 to ensure that it can move freely. Then, the top and bottom reinforcing semicircular pipe rotating rods 116 are rotated to make the two reinforcing semicircular pipes 117 fit tightly, and the inner wall thereof wraps the steel pipe and the steel pipe connecting mechanism 3. Then, the reinforcing grooves 119 opened by the two sets of bolt fixing plates 118 are used to reinforce them with bolts, thereby increasing the strength of the connection part. In this way, through the double reinforcement of the reinforcing semicircular pipe 117 and the bolt fixing plate 118, the node connection pipe 1 can be effectively prevented from displacement or deformation under severe weather conditions. Finally, the staff needs to check the reinforcement of the entire node connection pipe 1 to ensure that all bolts and connection parts are tightened in place. Through the above steps, it can be ensured that the node connector of the steel tube concrete wind power tower remains stable in long-term operation, thereby providing reliable support for wind power generation.

[0022] See also Figure 9-10 A rear slide groove 1110 is provided on the rear side of the node connecting pipe body 111, and the top and bottom of the rear side of the node connecting pipe body 111 are fixedly connected with a two-way screw rod connecting block 1111, and the inner walls of the two two-way screw rod connecting blocks 1111 are threadedly connected with a two-way screw rod 1112, and the bottom end of the two-way screw rod 1112 is fixedly connected with a turning handle 1113, and the two auxiliary connecting pipes 12 each include an auxiliary connecting pipe shell 121, and the outer walls of the two auxiliary connecting pipe shells 121 are respectively slidably connected to the top and bottom of the inner wall of the node connecting pipe body 111, and the four sides of the outer walls of the two auxiliary connecting pipe shells 121 Two auxiliary connecting pipe bolt grooves 122 are provided at the top and bottom of the two auxiliary connecting pipe housings 121, and transmission blocks 123 are fixedly connected to the sides close to each other on the rear sides. The rear sides of the two transmission blocks 123 extend to the outer wall of the node connecting pipe body 111 through the rear slide groove 1110 and are respectively threadedly connected to the top and bottom of the outer wall of the bidirectional screw rod 1112. The two transmission blocks 123 extend to the left and right sides of the outer wall of the node connecting pipe body 111 and are fixedly connected to side fixing plates 124. Side fixing plate fixing grooves 125 are provided on the front and rear sides of the tops of the two sets of side fixing plates 124. When it is necessary to connect the vertical poles of the two sections of the tower, first, the vertical poles at both ends are inserted into the inner wall of the auxiliary connecting pipe shell 121 and connected by bolts through the auxiliary connecting pipe bolt grooves 122 at the bottom of the four sides of the outer wall of the auxiliary connecting pipe shell 121, and then the turning handle 1113 is turned to make the two-way screw rod 1112 rotate. Since the two-way screw rod 1112 is threadedly connected with the transmission block 123, the transmission block 123 will move toward each other along the rear slide groove 1110, and the auxiliary connecting pipe shell 121 will slide along the inner wall of the node connecting pipe body 111, so that the vertical poles of the two sections of the tower are tightly fitted. When the vertical poles of the two sections of the tower are completely fitted, the fixing pin is inserted through the side fixing plate fixing groove 125 on the side fixing plate 124 to ensure the stability of the tower structure after connection, and then the fixing pin is inserted through the auxiliary connecting pipe bolt groove 122 on the other side and the node connecting pipe bolt groove 112 for reinforcement. Through this design, a fast, simple and firm wind power tower connection can be achieved, which greatly improves construction efficiency and safety.

[0023] Working principle: When the three sides of the steel pipe need to be connected after the node is connected, first remove the bolt 24 and the second bolt 25 to release the limit of the bolt ball 352 on the inner wall of the bolt ball connection mechanism shell 21, and then adjust the steel pipe connection mechanism 3 to the most suitable position for connecting the steel pipe and the best fixing effect by rotating the bolt ball 352 on the inner wall of the bolt ball connection mechanism shell 21, and then re-fix the bolt ball 352 with the bolt 24 and the second bolt 25 through the bolt ball slot 353 on the outer wall of the bolt ball 352, and insert one end of the steel pipe into the outer wall of the steel pipe connection front pipe 31 and the limit pipe 33. The staff then uses a wrench to rotate the internal threaded push shaft 354, which engages with the outer wall of the threaded rod 351 to drive the external push tube 355 to move toward the inner wall of one side of the limiting tube 33, thereby pushing the push shaft 357 to move on the outer wall of the threaded rod 351 through the push rod 356. When the push shaft 357 moves toward one side of the second connecting shaft 3510, it drives the push shaft 357 and multiple rotating rods 359 on the outer wall of the second connecting shaft 3510 to rotate and change the angle, thereby pushing the limiting arc plate 3511 to extend to the outer wall of the limiting tube 33 through the limiting groove 34. A plurality of limit grooves 34 expand outward to support the inner wall of the steel pipe. When the inner wall of the steel pipe is fixed, the staff can continue to use bolts to reinforce the connection between the steel pipe and the steel pipe connecting mechanism 3 through the plurality of bolt grooves 32 opened on the outer wall of the steel pipe connecting front pipe 31, thereby ensuring the stability and safety of the entire wind power tower. In the actual operation process, the staff needs to ensure the tightness of the bolts 24 and the second bolts 25 to prevent loosening under the action of wind. After completing the initial fixation of the steel pipe, the staff also needs to reinforce the node connecting pipe 1. First, pull out the limit rod 114 and tighten it. The inner wall of each limit block 113 releases the limit on the reinforcing semicircular tube rotating rod 116 to ensure that it can move freely. Then, the top and bottom reinforcing semicircular tube rotating rods 116 are rotated to make the two reinforcing semicircular tubes 117 fit tightly, and the inner wall thereof wraps the steel pipe and the steel pipe connecting mechanism 3. Then, the reinforcing grooves 119 opened by the two sets of bolt fixing plates 118 are used to reinforce them with bolts, thereby increasing the strength of the connection part. In this way, the double reinforcement of the reinforcing semicircular tube 117 and the bolt fixing plate 118 can effectively prevent the node connecting pipe 1 from displacement or deformation under severe weather conditions. When it is necessary to connect the vertical poles of the two sections of the tower, first, insert the vertical poles at both ends into the inner wall of the auxiliary connecting pipe shell 121 and connect them with bolts through the auxiliary connecting pipe bolt grooves 122 at the bottom of the four sides of the outer wall of the auxiliary connecting pipe shell 121, then turn the handle 1113 to make the two-way screw rod 1112 rotate. Since the two-way screw rod 1112 is threadedly connected with the transmission block 123, the transmission block 123 will move toward each other along the rear slide groove 1110, and the auxiliary connecting pipe shell 121 will slide along the inner wall of the node connecting pipe body 111, so that the vertical poles of the two sections of the tower are tightly fitted. When the vertical poles of the two sections of the tower are completely fitted, the fixing pin is inserted through the side fixing plate fixing groove 125 on the side fixing plate 124 to ensure the stability of the connected tower structure, and then the fixing pin is inserted through the auxiliary connecting pipe bolt groove 122 on the other side and the node connecting pipe bolt groove 112 for reinforcement.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A node connector for a steel tube concrete wind power tower, characterized in that: It comprises a node connection pipe (1), wherein three sides of the outer wall of the node connection pipe (1) are respectively fixedly connected with bolt-ball connection mechanisms (2), and the inner walls of the three bolt-ball connection mechanisms (2) on a side away from the node connection pipe (1) are each provided with a steel pipe connection mechanism (3); The bolt-ball connection mechanism (2) comprises a bolt-ball connection mechanism housing (21), a second fixing groove (23) is provided on the top of the bolt-ball connection mechanism housing (21), a bolt (24) is threadedly connected to the inner wall of the second fixing groove (23), fixing grooves (22) are respectively provided on both sides of the bolt-ball connection mechanism housing (21), second bolts (25) are threadedly connected to the inner walls of the two fixing grooves (22), and one end of the second bolt (25) extends to the outer wall of the bolt-ball connection mechanism housing (21) and is threadedly connected to a nut (26); The steel pipe connection mechanism (3) comprises a steel pipe connection front pipe (31), the outer wall of the steel pipe connection front pipe (31) is provided with bolt grooves (32) in an annular array, one end of the steel pipe connection front pipe (31) close to the node connection pipe (1) is fixedly connected to a limit pipe (33), the outer wall of the limit pipe (33) is provided with a limit groove (34) in an annular array, and the inner wall of the limit pipe (33) is movably connected to a fixing rod (35).

2. A node connector for a steel tube concrete wind power tower according to claim 1, characterized in that: The fixing rod (35) comprises a threaded rod (351), one end of the threaded rod (351) away from the node connection tube (1) is fixedly connected to the inner wall of the limiting tube (33) near the end of the steel tube connection front tube (31), one end of the threaded rod (351) away from the limiting tube (33) extends to the outer wall of the limiting tube (33) and is fixedly connected to a bolt ball (352), the outer wall of the bolt ball (352) is movably connected to the inner wall of the bolt ball connection mechanism housing (21), bolt ball clamping grooves (353) are respectively provided on both sides and the top of the outer wall of the bolt ball (352), the inner wall of the bolt ball clamping groove (353) at the top is threadedly connected to the outer wall of one side of the bolt (24) extending to the inner wall of the bolt ball connection mechanism housing (21), and the inner walls of the bolt ball clamping grooves (353) on the left and right sides are respectively threadedly connected to the outer walls of both sides of the second bolt (25) on the inner wall of the bolt ball connection mechanism housing (21).

3. A node connector for a steel tube concrete wind power tower according to claim 2, characterized in that: The threaded rod (351) is threadedly connected to an internal threaded push shaft (354) on one side of the outer wall of the limiting tube (33); the internal threaded push shaft (354) is rotatably connected to an external push tube (355) on the side away from the bolt ball (352); the outer wall of the external push tube (355) is slidably connected to the outer wall of the threaded rod (351); one end of the external push tube (355) away from the internal threaded push shaft (354) extends to the inner wall of the limiting tube (33) and is fixedly connected to a plurality of push rods (356) in an annular array; one end of the plurality of push rods (356) away from the external push tube (355) is fixedly connected to a push shaft (357); the outer wall of the threaded rod (351) is fixedly connected to a second connecting shaft (3510) on one side of the inner wall of the limiting tube (33).

4. A node connector for a steel tube concrete wind power tower according to claim 3, characterized in that: The outer walls of the second connecting shaft (3510) and the pushing shaft (357) are fixedly connected to a plurality of hinge blocks (358) in a circular array, and the outer walls of the two groups of hinge blocks (358) are rotatably connected to rotating rods (359), and the sides of the two groups of rotating rods (359) away from the hinge blocks (358) are rotatably connected to a limiting arc plate (3511).

5. The node connector of a steel tube concrete wind power tower according to claim 1, characterized in that: The node connection pipe (1) comprises a node connection pipe shell (11), and the top and the bottom of the inner wall of the node connection pipe shell (11) are respectively slidably connected to auxiliary connection pipes (12).

6. A node connector for a steel tube concrete wind power tower according to claim 5, characterized in that: The node connection tube housing (11) comprises a node connection tube body (111); the top and bottom of three sides of the outer wall of the node connection tube body (111) are fixedly connected to two limit blocks (113); the inner walls of the six groups of limit tubes (33) are slidably connected to limit rods (114); the top and bottom of three sides of the outer wall of the node connection tube body (111) are fixedly connected to reinforced semicircular tube hinge blocks (115); the inner walls of the three groups of reinforced semicircular tube hinge blocks (115) are rotatably connected to reinforced semicircular tube rotating rods (116); the opposite surfaces of the three groups of reinforced semicircular tube rotating rods (116) are fixedly connected to reinforced semicircular tubes (117); and the outer walls of the three groups of reinforced semicircular tube rotating rods (116) are movably connected to the inner sides of the six groups of limit blocks (113).

7. A node connector for a steel tube concrete wind power tower according to claim 6, characterized in that: The left and right groups of the three groups of reinforced semicircular tubes (117) away from the node connection tube body (111) are fixedly connected with bolt fixing plates (118), the top and bottom of the six groups of bolt fixing plates (118) are provided with reinforcement grooves (119), and the four sides of the top and bottom of the outer wall of the node connection tube body (111) are provided with two node connection tube bolt grooves (112).

8. A node connector for a steel tube concrete wind power tower according to claim 6, characterized in that: A rear slide groove (1110) is provided on the rear side of the node connection tube body (111); the top and bottom of the rear side of the node connection tube body (111) are fixedly connected to bidirectional screw rod connection blocks (1111); the inner walls of the two bidirectional screw rod connection blocks (1111) are threadedly connected to bidirectional screw rods (1112); and the bottom end of the bidirectional screw rod (1112) is fixedly connected to a turning handle (1113).

9. A node connector for a steel tube concrete wind power tower according to claim 5, characterized in that: The two secondary connecting pipes (12) each comprise a secondary connecting pipe housing (121); the outer walls of the two secondary connecting pipe housings (121) are respectively slidably connected to the top and bottom of the inner wall of the node connecting pipe body (111); the top and bottom of the four sides of the outer walls of the two secondary connecting pipe housings (121) are each provided with two secondary connecting pipe bolt grooves (122); and a transmission block (123) is fixedly connected to the rear sides of the two secondary connecting pipe housings (121) that are close to each other.

10. A node connector for a steel tube concrete wind power tower according to claim 9, characterized in that: The rear sides of the two transmission blocks (123) extend to the outer wall of the node connection tube body (111) through the rear slide groove (1110) and are respectively threadedly connected to the top and bottom of the outer wall of the bidirectional screw rod (1112); the left and right sides of the two transmission blocks (123) extending to the outer wall of the node connection tube body (111) are fixedly connected to side fixing plates (124); and the front and rear sides of the tops of the two sets of side fixing plates (124) are provided with side fixing plate fixing grooves (125).

Images