An assembled wind turbine tower

Abstract

The present invention relates to the technical field of wind turbine towers, and in particular to an assembled wind turbine tower, comprising a base, a tower, a splicing ring, a screw, and a mounting ring, wherein the splicing ring is connected to the upper portion of the tower, the screws are connected to the top of the splicing ring and the top of the base at even circumferential intervals, and the mounting ring is connected to the lower portion of the tower, and the mounting ring has through-holes evenly spaced circumferentially. The present invention can position the tower by using a positioning tube and a positioning rod, so that the screws and through-holes can correspond one-to-one, and the position of the tower can be quickly calibrated and aligned, thereby improving assembly efficiency. The output shaft of the motor can drive the internal threaded sleeve to rotate, and the internal threaded sleeve is screwed onto the screw, automatically assembling the tower, and reducing the labor intensity of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine towers, and in particular to an assembled wind turbine tower. Background Art

[0002] Wind turbine towers are an important component of wind turbine generator sets. They are mainly used to support the wind turbine main unit and ensure its stability in various weather conditions. Wind turbine towers are usually composed of multiple sections of cylindrical steel structures. After these segmented towers are produced in the manufacturing plant, they need to be transported to the wind farm site for assembly.

[0003] During the on-site assembly of wind turbine towers, each tower segment is lifted to the designated position in turn by a crane, and then multiple workers work together to complete the hole calibration and alignment work. Calibration and alignment work requires highly precise operations to ensure that the bolts can smoothly pass through the preset holes and achieve a stable connection between the towers. However, due to the huge size and astonishing weight of the towers, manual calibration and alignment takes a lot of time and has low assembly efficiency. Moreover, after completing the hole alignment, it is necessary to rely on manual tightening of a large number of nuts one by one to fix the tower connection, which is labor-intensive for the workers. Summary of the Invention

[0004] In view of this, the present invention provides an assembled wind turbine tower, which can overcome the shortcomings of manual calibration and alignment taking a lot of time, low assembly efficiency, and high labor intensity for workers, requiring manual tightening of a large number of nuts one by one to fix the tower connection after completing the hole alignment.

[0005] An assembled wind power tower comprises a base, a tower, a splicing ring, a screw, a mounting ring, an electric push rod, an annular frame, a guide rod, an annular plate, a supporting plate, a spring, an internal threaded sleeve, a positioning mechanism and a rotating mechanism. The upper part of the tower is connected to the splicing ring, the top of the splicing ring and the top of the base are connected to screws at uniform circumferential intervals, the lower part of the tower is connected to the mounting ring, the mounting ring is provided with through holes at uniform circumferential intervals, an electric push rod is installed on the tower, an annular frame is slidably connected to the tower, the telescopic rod of the electric push rod is connected to the annular frame, four guide rods are connected in the annular frame, an annular plate is slidably connected to the four guide rods, the lower ends of the guide rods are connected to the supporting plate, a spring is connected between the supporting plate and the annular plate, the annular plate is rotatably connected to the internal threaded sleeve at uniform circumferential intervals, the positioning mechanism is used to position the tower so that the screw and the through hole can correspond one to one, and the rotating mechanism is used to control the rotation of the internal threaded sleeve so that the internal threaded sleeve can be screwed onto the screw.

[0006] Further explanation: the positioning mechanism includes a connecting ring, a positioning rod, a positioning sleeve and a positioning tube. The top of the base is connected to a connecting ring. The top of the connecting ring and the top of the splicing ring are connected to positioning rods at evenly spaced circumferential intervals. The mounting ring is connected to positioning sleeves at evenly spaced circumferential intervals. The tops of the positioning sleeves are connected to positioning tubes. When the tower is hoisted onto the base, the positioning rod will be inserted into the positioning sleeve and the positioning tube to position the tower.

[0007] Further explanation: the rotating mechanism includes a ring gear, a gear and a motor. The ring gear is rotatably connected in the annular frame, and the internal threaded sleeves are connected to the gears. The gears and the ring gear are meshed. The motor is installed on the top of the annular plate, and the output shaft of the motor is connected to the top of one of the internal threaded sleeves.

[0008] Further explanation: it also includes pressure rods and pressure blocks. The pressure rods are connected to the top of the annular frame at even intervals along the circumference, and the lower ends of the pressure rods are connected to pressure blocks for pressing the internal threaded sleeve.

[0009] Further description, it also includes a sealing ring, a sealing groove is opened on the top of the mounting ring, and the bottom of the annular frame is connected to the sealing ring. The sealing ring can move into the sealing groove to seal the gap between the mounting ring and the annular frame.

[0010] Further explanation: it also includes a protective shell and a telescopic tube. The tower is connected to a protective shell for protecting the electric push rod. The electric push rod is located inside the protective shell, and the telescopic rod of the electric push rod slides through the bottom of the protective shell. A telescopic tube for protecting the telescopic rod of the electric push rod is connected between the bottom of the protective shell and the top of the annular frame. The telescopic rod of the electric push rod is located inside the telescopic tube.

[0011] Further description is made, and a sealing ring is included. The sealing ring is connected inside the annular frame, and the tower is in contact with the inner wall of the sealing ring.

[0012] Further description, it also includes a support block, and the top of the support plate is connected to a support block for supporting the annular plate.

[0013] The beneficial effects of the present invention are:

[0014] 1. The present invention can position the tower through the positioning tube and the positioning rod, so that the screw and the through hole can correspond one to one, and the position of the tower can be quickly calibrated and aligned, thereby improving the assembly efficiency. The output shaft of the motor can drive the internal threaded sleeve to rotate, and the internal threaded sleeve is screwed onto the screw to automatically assemble the tower, reducing the labor intensity of the staff.

[0015] 2. The internal thread sleeve can be pressed by the pressure rod and the pressure block to prevent the internal thread sleeve from loosening and improve the stability of the internal thread sleeve.

[0016] 3. The sealing ring can seal the gap between the mounting ring and the annular frame to prevent moisture from entering the annular frame through the gap between the mounting ring and the annular frame, thereby preventing the components in the annular frame from undergoing excessive oxidation reactions and extending the service life of the components in the annular frame.

[0017] 4. The protective shell and telescopic tube can protect the electric linear actuator to prevent dust and moisture from drifting onto the electric linear actuator, thereby preventing the electric linear actuator from short circuiting. At the same time, it can prevent external objects from colliding with the electric linear actuator and preventing the electric linear actuator from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the screw, mounting ring, through hole, electric push rod and annular frame of the present invention.

[0020] Figure 3 It is a cross-sectional view of the annular frame of the present invention.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of part A.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the positioning mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating mechanism of the present invention.

[0024] Figure 7 This is a state diagram of the tower after assembly of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the pressure rod and the pressure block of the present invention.

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the sealing groove and the sealing ring of the present invention.

[0027] Figure 10 It is a schematic diagram of the three-dimensional structure of the protective shell and the telescopic tube of the present invention.

[0028] Figure 11 It is a schematic diagram of the three-dimensional structure of the sealing ring of the present invention.

[0029] In the above drawings: 1: base, 2: tower, 3: splicing ring, 4: screw, 5: mounting ring, 6: through hole, 7: electric push rod, 8: annular frame, 9: guide rod, 10: annular plate, 11: support plate, 12: spring, 13: internal threaded sleeve, 141: connecting ring, 142: positioning rod, 143: positioning sleeve, 144: positioning tube, 151: gear ring, 152: gear, 153: motor, 161: pressure rod, 162: pressure block, 171: sealing groove, 172: sealing ring, 181: protective shell, 182: telescopic tube, 19: sealing ring, 20: support block. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0031] Please refer to Figure 1-Figure 7 , an assembled wind power tower, including a base 1, a tower 2, a splicing ring 3, a screw 4, a mounting ring 5, an electric push rod 7, an annular frame 8, a guide rod 9, an annular plate 10, a support plate 11, a spring 12, an internal threaded sleeve 13, a positioning mechanism and a rotating mechanism, the upper part of the tower 2 is connected with a splicing ring 3, the top of the splicing ring 3 and the top of the base 1 are connected with screws 4 at uniform intervals in the circumference, the lower part of the tower 2 is connected with a mounting ring 5, the mounting ring 5 has through holes 6 evenly spaced in the circumference, four electric push rods 7 are installed on the lower part of the tower 2 at uniform intervals through bolts, the lower part of the tower 2 is slidably connected to the annular frame 8, the lower end of the telescopic rod of the electric push rod 7 and the ring The top of the annular frame 8 is connected, and four guide rods 9 are connected to the top of the annular frame 8 at uniform circumferential intervals. An annular plate 10 is slidably connected to the four guide rods 9. The lower ends of the guide rods 9 are connected to a support plate 11. A spring 12 is sleeved on the guide rod 9. The two ends of the spring 12 are respectively connected to the annular plate 10 and the support plate 11. The spring 12 is sleeved on the guide rod 9 to prevent the spring 12 from bending. An internal threaded sleeve 13 is connected to the annular plate 10 at uniform circumferential intervals. The positioning mechanism is used to position the tower 2 so that the screw 4 and the through hole 6 can correspond one to one. The rotating mechanism is used to control the rotation of the internal threaded sleeve 13 so that the internal threaded sleeve 13 can be screwed onto the screw 4.

[0032] Please refer to Figure 5 The positioning mechanism includes a connecting ring 141, a positioning rod 142, a positioning sleeve 143 and a positioning tube 144. The top of the base 1 is connected to the connecting ring 141. The top of the connecting ring 141 and the top of the splicing ring 3 are connected to the positioning rods 142 at uniform intervals in the circumferential direction. The mounting ring 5 is connected to the positioning sleeves 143 at uniform intervals in the circumferential direction. The positioning sleeves 143 are conical, and the tops of the positioning sleeves 143 are connected to positioning tubes 144.

[0033] Please refer to Figure 6 The rotating mechanism includes a ring gear 151, a gear 152 and a motor 153. The ring gear 151 is rotatably connected to the lower part of the annular frame 8. The internal threaded sleeves 13 are connected with gears 152. The gears 152 and the ring gear 151 are meshed. The motor 153 is installed on the front side of the top of the annular plate 10 by bolts. The output shaft of the motor 153 is connected to the top of one of the internal threaded sleeves 13.

[0034] The staff installs the base 1 at the installation position in advance, and then lifts the tower 2 by hoisting, and lifts the tower 2 to the top of the base 1, and then slowly lowers the tower 2. The positioning rod 142 will enter the positioning sleeve 143 and contact the inner wall of the positioning sleeve 143. The positioning sleeve 143 is conical, so the positioning rod 142 will follow the positioning sleeve 143 into the positioning tube 144. The positioning tube 144 and the positioning rod 142 can position the tower 2 so that the screw 4 and the through hole 6 can correspond one to one, and the position of the tower 2 can be quickly calibrated and aligned without manual fine adjustment. The assembly efficiency can be improved. Then the tower 2 continues to descend, the screw 4 will enter the through hole 6, and then the telescopic rod of the electric push rod 7 will be controlled to extend, driving the annular frame 8 to move downward, and the internal threaded sleeve 13 will move downward accordingly. The internal threaded sleeve 13 will contact the upper end of the screw 4. At this time, the motor 153 is started, and the output shaft of the motor 153 drives one of the gears 152 to rotate, the gear 152 drives the ring gear 151 to rotate, and the ring gear 151 drives the remaining gears 152 to rotate, so that all the internal threaded sleeves 13 can rotate synchronously, the telescopic rod of the electric push rod 7 continues to extend, and the internal threaded sleeve 13 continues to move downward. The internal threaded sleeve 13 moves downward and screws the internal threaded sleeve 13 onto the screw rod 4. If the threads on the internal threaded sleeve 13 and the threads on the screw rod 4 are not completely consistent, the internal threaded sleeve 13 will stop moving downward, and the spring 12 will stretch to prevent the internal threaded sleeve 13 from squeezing the screw rod 4. When the threads on the internal threaded sleeve 13 and the threads on the screw rod 4 are completely consistent, under the action of the spring 12, the internal threaded sleeve 13 continues to move downward and screws onto the screw rod 4, automatically assembling the tower 2 and reducing the labor intensity of the staff. After the tower 2 is assembled, the motor 153 is turned off, and then the telescopic rod of the electric push rod 7 is controlled to continue to extend. Long, driving the annular frame 8, guide rod 9 and ring gear 151 to continue moving downward. At this time, the annular plate 10, internal threaded sleeve 13 and gear 152 stop moving downward, the spring 12 will stretch, the ring gear 151 and the gear 152 will be disengaged, so that the vibration generated by the internal threaded sleeve 13 cannot be transmitted, thereby preventing all internal threaded sleeves 13 from loosening. When the annular frame 8 moves downward and contacts the mounting ring 5, the electric push rod 7 is closed, and the bottom of the annular frame 8 contacts the top of the mounting ring 5, which can prevent external garbage from entering the annular frame 8. There are also screws 4 and positioning rods 142 on the splicing ring 3, which can splice the tower 2.

[0035] Please refer to Figure 8 , also includes a pressure rod 161 and a pressure block 162. The pressure rods 161 are connected to the top of the annular frame 8 at evenly spaced intervals in the circumferential direction. The lower ends of the pressure rods 161 are connected to pressure blocks 162. The bottoms of the pressure blocks 162 have a rubber layer to prevent the pressure blocks 162 from damaging the internal threaded sleeve 13.

[0036] After the tower 2 is assembled, the internal threaded sleeve 13 may vibrate under the influence of external factors. The vibration of one internal threaded sleeve 13 will cause the remaining internal threaded sleeves 13 to vibrate through the gear 152 and the ring gear 151, thereby causing all the internal threaded sleeves 13 to loosen, affecting the stability of the tower 2. Therefore, after the tower 2 is assembled, the telescopic rod of the electric push rod 7 can be controlled to continue to extend, driving the annular frame 8 to continue to move downward. At this time, the internal threaded sleeve 13 stops moving downward, and the annular frame 8 will drive the pressure rod 161 and the pressure block 162 to move downward. The pressure block 162 can press the internal threaded sleeve 13 to prevent the internal threaded sleeve 13 from loosening and improve the stability of the internal threaded sleeve 13.

[0037] Please refer to Figure 9 , also includes a sealing ring 172, a sealing groove 171 is opened on the top of the mounting ring 5, and the sealing ring 172 is connected to the bottom of the annular frame 8.

[0038] When the annular frame 8 moves downward, it will drive the sealing ring 172 to move downward, and the sealing ring 172 will move into the sealing groove 171. The sealing ring 172 can seal the gap between the mounting ring 5 and the annular frame 8 to prevent moisture from entering the annular frame 8 through the gap between the mounting ring 5 and the annular frame 8, thereby preventing the components in the annular frame 8 from undergoing excessive oxidation reactions and extending the service life of the components in the annular frame 8.

[0039] Please refer to Figure 10 , also includes a protective shell 181 and a telescopic tube 182. Four protective shells 181 are evenly spaced circumferentially at the lower part of the tower 2 and connected by bolts. The electric push rod 7 is located in the protective shell 181, and the telescopic rod of the electric push rod 7 slides through the bottom of the protective shell 181. A telescopic tube 182 is connected between the bottom of the protective shell 181 and the top of the annular frame 8, and the telescopic rod of the electric push rod 7 is located in the telescopic tube 182.

[0040] The protective shell 181 and the telescopic tube 182 can protect the electric push rod 7, prevent dust and moisture from floating onto the electric push rod 7, thereby preventing the electric push rod 7 from short circuiting. At the same time, it can prevent external objects from colliding with the electric push rod 7 and prevent the electric push rod 7 from being damaged. When the telescopic rod of the electric push rod 7 is extended and retracted, the telescopic tube 182 will adaptively extend and shorten to ensure that the electric push rod 7 can operate normally.

[0041] Please refer to Figure 11, also includes a sealing ring 19, the upper part of the annular frame 8 is connected to the sealing ring 19, the tower 2 is in contact with the inner wall of the sealing ring 19, and the sealing ring 19 can seal the gap between the tower 2 and the annular frame 8 to prevent moisture from entering the annular frame 8 through the gap between the tower 2 and the annular frame 8, thereby preventing the components in the annular frame 8 from undergoing oxidation reaction too quickly and extending the service life of the components in the annular frame 8.

[0042] Please refer to Figure 4 , also includes a support block 20, four support blocks 20 are connected to the top of the support plate 11, the bottom of the annular plate 10 is in contact with the top of the support block 20, and the support block 20 can support the annular plate 10 to prevent the annular plate 10 from causing excessive pressure on the spring 12.

[0043] The above description is merely an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention are intended to be included within the scope of protection of the present invention. Any content not elaborated in detail herein is already known to those skilled in the art.

Claims

1. An assembled wind power tower, comprising a base (1), a tower (2), a splicing ring (3), a screw (4) and a mounting ring (5), wherein the upper portion of the tower (2) is connected to the splicing ring (3), the top of the splicing ring (3) and the top of the base (1) are both connected to the screws (4) at circumferentially uniform intervals, the lower portion of the tower (2) is connected to the mounting ring (5), and the mounting ring (5) is provided with through holes (6) at circumferentially uniform intervals, wherein: The utility model also includes an electric push rod (7), an annular frame (8), a guide rod (9), an annular plate (10), a support plate (11), a spring (12), an internal threaded sleeve (13), a positioning mechanism and a rotating mechanism. The electric push rod (7) is installed on the tower (2). The annular frame (8) is slidably connected to the tower (2). The telescopic rod of the electric push rod (7) is connected to the annular frame (8). Four guide rods (9) are connected inside the annular frame (8). The four guide rods (9) are slidably connected to the annular plate (10). The lower ends of the guide rods (9) are all connected to the support plate (11). A spring (12) is connected between the support plate (11) and the annular plate (10). The annular plate (10) is connected to the internal threaded sleeve (13) at uniform intervals in the circumferential direction. The positioning mechanism is used to position the tower (2) so that the screw rod (4) and the through hole (6) can correspond one to one. The rotating mechanism is used to control the rotation of the internal threaded sleeve (13) so that the internal threaded sleeve (13) can be screwed onto the screw rod (4). The positioning mechanism includes a connecting ring (141), a positioning rod (142), a positioning sleeve (143) and a positioning tube (144). The top of the base (1) is connected to the connecting ring (141). The top of the connecting ring (141) and the top of the splicing ring (3) are both connected to the positioning rods (142) at circumferentially uniform intervals. The top of the mounting ring (5) is connected to the positioning sleeves (143) at circumferentially uniform intervals. The tops of the positioning sleeves (143) are both connected to the positioning tubes (144). When the tower (2) is hoisted onto the base (1), the positioning rods (142) are inserted into the positioning sleeves (143) and the positioning tubes (144) to position the tower (2).

2. The assembled wind turbine tower according to claim 1, characterized in that: The rotating mechanism includes a ring gear (151), a gear (152) and a motor (153). The ring gear (151) is rotatably connected in the annular frame (8). The internal threaded sleeves (13) are connected to the gears (152). The gears (152) and the ring gear (151) are meshed. The motor (153) is installed on the top of the annular plate (10). The output shaft of the motor (153) is connected to the top of one of the internal threaded sleeves (13).

3. The assembled wind turbine tower according to claim 1, characterized in that: It also includes a pressure rod (161) and a pressure block (162). The pressure rods (161) are connected to the top of the annular frame (8) at even intervals in the circumferential direction. The lower ends of the pressure rods (161) are connected to pressure blocks (162) for pressing the internal threaded sleeve (13).

4. The assembled wind turbine tower according to claim 1, characterized in that: The mounting ring (5) further comprises a sealing ring (172), a sealing groove (171) is formed on the top of the mounting ring (5), and a sealing ring (172) is connected to the bottom of the annular frame (8). The sealing ring (172) can be moved into the sealing groove (171) to seal the gap between the mounting ring (5) and the annular frame (8).

5. The assembled wind turbine tower according to claim 1, characterized in that: The utility model further comprises a protective shell (181) and a telescopic tube (182), wherein the tower (2) is connected with the protective shell (181) for protecting the electric push rod (7), the electric push rod (7) is located in the protective shell (181), and the telescopic rod of the electric push rod (7) slides through the bottom of the protective shell (181), and the telescopic tube (182) for protecting the telescopic rod of the electric push rod (7) is connected between the bottom of the protective shell (181) and the top of the annular frame (8), and the telescopic rod of the electric push rod (7) is located in the telescopic tube (182).

6. The assembled wind turbine tower according to claim 1, characterized in that: It also includes a sealing ring (19), the sealing ring (19) is connected to the annular frame (8), and the tower (2) and the inner wall of the sealing ring (19) are in contact.

7. The assembled wind turbine tower according to claim 1, characterized in that: It also includes a support block (20), and the top of each support plate (11) is connected to a support block (20) for supporting the annular plate (10).

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