Fast-assembly type steel tower transition section suitable for concrete tower drum

Abstract

The utility model discloses a fast-assembly type steel tower transition section suitable for a concrete tower drum, which comprises a transition section drum body, a concrete tower drum body is arranged below the transition section drum body, a second flange plate is welded at the top of the concrete tower drum body, and first flange plates are welded at the upper end and the lower end of the transition section drum body; and a connecting plate is arranged at the top of the upper first flange plate. According to the fast-assembly type steel tower transition section suitable for the concrete tower drum, a plurality of driven gears can be driven to rotate at the same time by rotating a driving gear ring in the forward direction, so that a sleeve rotates, and at the moment, two fixing bolts located in the sleeve move oppositely and are screwed into threaded holes in a corresponding connecting plate, a first flange plate and a second flange plate; and the connecting plate, the first flange plate and the second flange plate can be fixed together, so that the transition section barrel and the concrete tower barrel body can be quickly mounted, on the contrary, the transition section barrel and the concrete tower barrel body can be quickly dismounted, and workers can conveniently use the concrete tower barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete towers, in particular to a quick-install steel tower transition section suitable for concrete towers. Background Art

[0002] The concrete tower and the steel tower transition section are important structural parts of the wind turbine generator set. The connection and transition between them are crucial to the stability and safety of the entire tower. Defects: The traditional transition section connection device between the existing concrete tower section and the steel tower section still adopts the method of tightening and fastening with pre-embedded concrete bolts and anchor steel plates. Due to the large spacing between the bolt installation positions, the stress of the concrete tower will be uneven. During the operation of the wind turbine, tensile stress will be continuously generated on the concrete tower wall. In severe cases, the concrete tower shell will be cracked, and its crack resistance performance cannot be guaranteed, which will affect the overall service life of the tower. In addition, the traditional transition section connection device still adopts the welding flange on the connection device and the steel tower bottom flange, which is expensive. In order to solve the above defects, the existing technology (application number: 201922261099.1, authorization announcement date) (Chinese patent application dated 2020-10-23) discloses a steel-concrete tower transition section connection structure, in which the steel pad is adapted to the top area of ​​the concrete tower, thereby increasing the contact area with the concrete tower; the steel pads on the top of the concrete tower are fastened by gluing and solidification, so that the weight of the steel tower, nacelle, hub, etc. is evenly distributed on the concrete tower, avoiding uneven force on the concrete tower and large local force, and the cost is low; a ring-shaped bolt connection plate structure is provided, which can be directly connected to the bottom flange of the steel tower with high-strength bolts, with high installation efficiency and low cost; a reinforcing rib plate structure is provided, and the addition of the reinforcing rib plate enhances the connection strength between the concrete and the steel tower, improves safety, and at the same time, the right angles of the reinforcing rib plate are not in direct contact with the corners of the connection position, avoiding stress concentration, and the welding effect is safer and more reliable.

[0003] The existing technology is to provide an annular bolt connecting plate structure, which can be directly connected to the bottom flange of the steel tower using high-strength bolts, with high installation efficiency and low cost. However, each time the installation and disassembly is performed, the staff needs to use tools to loosen or tighten multiple bolts in sequence, and remove or insert multiple bolts to complete the installation and disassembly of the transition section cylinder, resulting in a time-consuming and labor-intensive disassembly method that is inconvenient to use.

[0004] Therefore, we proposed a quick-install steel tower transition section suitable for concrete towers that can well solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a quick-install steel tower transition section suitable for concrete tower tubes, so as to solve the problem raised in the above-mentioned background technology that the existing steel tower transition sections on the market require workers to use tools to loosen or tighten multiple bolts in sequence, and remove or insert multiple bolts to complete the installation and disassembly of the transition section tube body, resulting in a time-consuming and labor-intensive disassembly method and inconvenient use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quick-install steel tower transition section suitable for a concrete tower, comprising a transition section cylinder, a concrete tower body is arranged below the transition section cylinder, and a second flange is welded to the top of the concrete tower body, and a first flange is welded to both the upper and lower ends of the transition section cylinder; a connecting plate is provided on the top of the first upper flange, and threaded holes are provided at equal angles inside the first flange, the second flange and the connecting plate, a fixing ring is fixedly sleeved on the outer side of the transition section cylinder, and a sleeve is connected to the inner side of the fixing ring at equal angles; fixing bolts are connected at equal angles to the top and bottom of the sleeve, and a driven gear is fixedly sleeved on the outer side of the sleeve, and a driving gear ring is sleeved on the outer side of the fixing ring.

[0007] Preferably, the positions of the threaded holes on the first flange, the second flange and the connecting plate correspond one to one, the two ends of the sleeve extend out of the top and bottom of the fixing ring respectively, and the sleeve and the fixing ring are rotationally connected, and the end side of the fixing bolt is slidably connected to the inner wall of the sleeve through a slider.

[0008] Preferably, every two fixing bolts are symmetrically distributed inside a sleeve, and the outer side of the fixing bolts is threadedly connected to the inner wall of the sleeve. The threads on the outer sides of the upper and lower fixing bolts are in opposite directions, and the positions of the fixing bolts and the threaded holes correspond one to one.

[0009] Preferably, the driving gear ring is rotationally connected to the fixed ring, the plurality of driven gears are distributed at equal angles on the inner side of the driving gear ring, and the plurality of driven gears are meshingly connected to the driving gear ring.

[0010] Preferably, reinforcing ribs are provided at equal angles inside the transition section cylinder, and the upper and lower ends of the reinforcing ribs are welded to the opposite surfaces of the two first flanges. Prestressed cables are connected at equal angles through the interior of the transition section cylinder, and both ends of the prestressed cables pass through the interior of the connecting plate, the first flange and the second flange, and the prestressed cables are fixed to the upper surface of the connecting plate by anchors.

[0011] Preferably, the front of the fixing ring is fixedly connected to a bracket above the limiting groove, and a limiting rod is connected to the inside of the bracket. A reset spring is installed at the connection position between the outer side of the limiting rod and the bracket, and limiting grooves are provided at equal angles on the outer side of the driving gear ring.

[0012] Preferably, the bracket is arranged in an "L" shape, the limiting rod and the bracket are slidably connected, and the positions of the limiting rod and the limiting slot correspond to each other.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the quick-install steel tower transition section suitable for concrete tower adopts a new structural design, the specific contents of which are as follows: (1) by rotating the gear ring in the forward direction, it can simultaneously drive multiple driven gears to rotate, causing the sleeve to rotate. At this time, the two fixing bolts inside the sleeve move in opposite directions and are screwed into the threaded holes on the corresponding connecting plate, the first flange and the second flange, which can fix the connecting plate, the first flange and the second flange together, so that the installation between the transition section cylinder and the concrete tower body can be completed quickly, and vice versa, it can be quickly disassembled, which is convenient for the staff to use.

[0014] (2) After the driving gear ring has finished rotating, the limiting rod is loosened so that the limiting rod is reset under the elastic force of the reset spring and is locked into the corresponding limiting groove, thereby limiting the driving gear ring and preventing it from deflecting during use and affecting the stability of the transition section cylinder installation.

[0015] (3) The use of the reinforced ribs can enhance the strength of the connection between the transition section cylinder and the concrete tower body, thereby improving safety. The prestressed cables can provide a secondary fastening effect, thereby reducing the probability of fatigue failure of the fastening components and improving the overall reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the reinforcing rib plate and prestressed cable of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the driving gear ring and the driven gear of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the sleeve and the fixing ring of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixing bolt of the utility model;

[0021] Figure 6 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0022] Figure 7 For this utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0023] In the figure: 1. Transition section cylinder; 2. Concrete tower body; 3. Anchor; 4. First flange; 5. Second flange; 6. Fixing bolt; 7. Sleeve; 8. Fixing ring; 9. Driving gear ring; 10. Driven gear; 11. Prestressed cable; 12. Reinforcement rib plate; 13. Limiting groove; 14. Limiting rod; 15. Return spring; 16. Bracket. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 7 , the utility model provides the following technical solutions: a quick-install steel tower transition section suitable for concrete tower;

[0026] Embodiment 1: In order to solve the problem that in the prior art, when the existing steel tower transition section is in use, the staff needs to use tools to loosen or tighten multiple bolts in sequence, and remove or insert multiple bolts to complete the installation and disassembly of the transition section cylinder 1, which makes the disassembly method time-consuming and labor-intensive and inconvenient to use, the following solution is disclosed, specifically referring to Figure 1 and Figure 3-Figure 6As shown, it includes a transition section cylinder 1, a concrete tower body 2 is provided below the transition section cylinder 1, and a second flange 5 is welded to the top of the concrete tower body 2, and a first flange 4 is welded to the upper and lower ends of the transition section cylinder 1; a connecting plate is provided on the top of the first flange 4, and threaded holes are provided at equal angles inside the first flange 4, the second flange 5 and the connecting plate, a fixing ring 8 is sleeved and fixed on the outer side of the transition section cylinder 1, and a sleeve 7 is connected to the inside of the fixing ring 8 at equal angles, the positions of the threaded holes on the first flange 4, the second flange 5 and the connecting plate correspond one to one, the two ends of the sleeve 7 extend out of the top and bottom of the fixing ring 8 respectively, and the sleeve 7 and the fixing ring 8 are rotatably connected; The top and bottom of the sleeve 7 are connected with fixing bolts 6 at equal angles, and every two fixing bolts 6 are symmetrically distributed inside a sleeve 7. The end side surfaces of the fixing bolts 6 are slidingly connected to the inner wall of the sleeve 7 through a slider, and the outer side of the fixing bolts 6 is threadedly connected to the inner wall of the sleeve 7. The threads on the outer sides of the upper and lower fixing bolts 6 are in opposite directions. The positions of the fixing bolts 6 and the threaded holes correspond one to one, and a driven gear 10 is fixed to the outer side of the sleeve 7, and a driving gear ring 9 is provided on the outer side of the fixing ring 8. The driving gear ring 9 and the fixing ring 8 are rotationally connected. Multiple driven gears 10 are distributed at equal angles on the inner side of the driving gear ring 9, and multiple driven gears 10 are meshed with the driving gear ring 9.

[0027] Align the first flange 4 at the bottom of the transition section cylinder 1 with the second flange 5 at the top of the concrete tower body 2, and then the staff pulls the limit rod 14 to release the limit on the driving gear ring 9, and uses a tool to rotate the driving gear ring 9 in the forward direction, which can simultaneously drive multiple driven gears 10 to rotate, causing the sleeve 7 to rotate. At this time, the two fixing bolts 6 located inside the sleeve 7 move in opposite directions and screw into the corresponding first flange 4, second flange 5 and threaded holes on the connecting plate, which can fix the first flange 4, second flange 5 and connecting plate together, so that the installation between the transition section cylinder 1 and the concrete tower body 2 can be completed quickly. When the driving gear ring 9 is rotated in the opposite direction, the fixing bolts 6 are unscrewed from the threaded holes to release the first flange 4, second flange 5 and connecting plate, so that the transition section cylinder 1 can be quickly disassembled, which is convenient for the staff to use.

[0028] Embodiment 2: Different from embodiment 1, this embodiment uses the elastic force of the return spring 15 to insert the limiting rod 14 into the relative limiting groove 13, which can limit the driving gear ring 9 and ensure the stability of the installation of the transition section cylinder 1. For details, refer to Figure 3 、 Figure 4 and Figure 7As shown, the front of the fixing ring 8 is located above the limiting groove 13 and is fixedly connected to a bracket 16, and the interior of the bracket 16 is penetrated by a limiting rod 14, and a return spring 15 is installed at the connection position between the outer side of the limiting rod 14 and the bracket 16. The limiting groove 13 is provided at equal angles on the outer side surface of the driving gear ring 9, and the bracket 16 is arranged in an "L" shape. The limiting rod 14 and the bracket 16 are slidably connected, and the position of the limiting rod 14 corresponds to that of the limiting groove 13.

[0029] When the driving gear ring 9 has finished rotating, the limiting rod 14 is loosened so that the limiting rod 14 is reset under the elastic force of the reset spring 15 and is locked into the corresponding limiting groove 13, thereby limiting the driving gear ring 9 and preventing it from deflecting during use and affecting the stability of the installation of the transition section cylinder 1.

[0030] Example 3: Different from Example 2, this example utilizes a reinforcing rib plate 12 to enhance the strength of the connection between the transition section cylinder 1 and the concrete tower body 2. Figure 1 and Figure 2 As shown, reinforcing ribs 12 are provided at equal angles inside the transition section cylinder 1, and the upper and lower ends of the reinforcing ribs 12 are welded to the opposite surfaces of the two first flanges 4. Prestressed cables 11 are connected to the interior of the transition section cylinder 1 at equal angles, and both ends of the prestressed cables 11 pass through the interior of the connecting plate, the first flange 4 and the second flange 5, and the prestressed cables 11 are fixed to the upper surface of the connecting plate by anchors 3.

[0031] The provided reinforcing ribs 12 can enhance the strength of the connection between the transition section cylinder 1 and the concrete tower body 2, thereby improving safety. The provided prestressed cables 11 can provide a secondary fastening effect, thereby reducing the probability of fatigue failure of the fastening components and improving overall reliability and stability.

[0032] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-install steel tower transition section suitable for a concrete tower, comprising a transition section cylinder (1), a concrete tower body (2) being arranged below the transition section cylinder (1), a second flange (5) being welded to the top of the concrete tower body (2), and first flanges (4) being welded to both the upper and lower ends of the transition section cylinder (1); It is characterized by: A connecting plate is provided on the top of the first flange (4) above, and threaded holes are provided in the interior of the first flange (4), the second flange (5) and the connecting plate at equal angles. A fixing ring (8) is sleeved and fixed on the outer side of the transition section cylinder (1), and a sleeve (7) is connected to the interior of the fixing ring (8) at equal angles. The top and bottom of the sleeve (7) are connected with fixing bolts (6) at equal angles, and a driven gear (10) is sleeved and fixed on the outer side of the sleeve (7), and a driving gear ring (9) is sleeved on the outer side of the fixing ring (8).

2. The quick-install steel tower transition section suitable for a concrete tower according to claim 1, characterized in that: The positions of the threaded holes on the first flange (4), the second flange (5) and the connecting plate correspond to each other, the two ends of the sleeve (7) extend out of the top and bottom of the fixing ring (8) respectively, and the sleeve (7) and the fixing ring (8) are rotatably connected, and the end side surface of the fixing bolt (6) is slidably connected to the inner wall of the sleeve (7) through a slider.

3. The quick-install steel tower transition section suitable for a concrete tower according to claim 1, characterized in that: Every two fixing bolts (6) are symmetrically distributed in a sleeve (7) in an upper and lower direction, and the outer sides of the fixing bolts (6) are connected to the inner wall of the sleeve (7) by threads, and the threads on the outer sides of the upper and lower fixing bolts (6) are in opposite directions, and the positions of the fixing bolts (6) and the threaded holes correspond one to one.

4. The quick-install steel tower transition section suitable for a concrete tower according to claim 1, characterized in that: The driving gear ring (9) and the fixed ring (8) are rotationally connected, and the plurality of driven gears (10) are distributed at equal angles on the inner side of the driving gear ring (9), and the plurality of driven gears (10) and the driving gear ring (9) are all meshingly connected.

5. The quick-install steel tower transition section suitable for a concrete tower according to claim 1, characterized in that: The interior of the transition section cylinder (1) is provided with reinforcing ribs (12) at equal angles, and the upper and lower ends of the reinforcing ribs (12) are welded to the opposite surfaces of the two first flanges (4). The interior of the transition section cylinder (1) is connected with prestressed cables (11) at equal angles, and both ends of the prestressed cables (11) pass through the interior of the connecting plate, the first flange (4) and the second flange (5), and the prestressed cables (11) are fixed to the upper surface of the connecting plate through anchors (3).

6. The quick-install steel tower transition section suitable for a concrete tower according to claim 1, characterized in that: The front of the fixing ring (8) is located above the limiting groove (13) and is fixedly connected to a bracket (16), and the inside of the bracket (16) is penetrated by a limiting rod (14), and a return spring (15) is installed at the connection position between the outer side of the limiting rod (14) and the bracket (16), and the outer side surface of the driving gear ring (9) is provided with a limiting groove (13) at an equal angle.

7. The quick-install steel tower transition section suitable for a concrete tower according to claim 6, characterized in that: The bracket (16) is arranged in an "L" shape, the limiting rod (14) and the bracket (16) are slidably connected, and the positions of the limiting rod (14) and the limiting groove (13) correspond to each other.

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