Auxiliary docking device and method for wind power tower drum

Abstract

The invention relates to the technical field of offshore wind power engines, in particular to an auxiliary docking device and method for a wind power tower drum. Comprising an upper binding mechanism which comprises an annular upper lantern ring and an upper air bag arranged on the annular inner side of the upper lantern ring; the lower binding mechanism comprises an annular lower lantern ring and a lower air bag arranged on the annular inner side of the lower lantern ring; the telescopic mechanisms are connected with the upper binding mechanism and the lower binding mechanism and comprise a first telescopic mechanism and a second telescopic mechanism, the first telescopic mechanism comprises a plurality of first telescopic parts, the second telescopic mechanism comprises a plurality of second telescopic parts, the bottom ends of the first telescopic parts are hinged to the lower lantern ring, and the top ends of the first telescopic parts are hinged to the upper lantern ring; the bottom end of the second telescopic part is hinged to the lower lantern ring, and the top end of the second telescopic part is hinged to the first telescopic part. The device is simple in structure, the butt-joint method is convenient to implement, the safety coefficient of the butt-joint process is high, and the butt-joint efficiency of the wind power tower drum is improved.

Description

Technical Field

[0001] The invention relates to the technical field of offshore wind engines, and in particular to a wind power tower auxiliary docking device and method. Background Art

[0002] Wind power generation is gradually becoming one of the important ways to utilize renewable energy. The wind tower is a key structure that supports offshore wind turbines. It is usually composed of 4-5 tower sections connected by flanges. During the installation of the wind tower, the wind tower needs to be transported to the sea in sections and then assembled. During the installation process, the wind tower is generally hoisted to the pre-built foundation with the help of large lifting equipment, and the docking is completed through the flange connection between the towers.

[0003] At present, there are two main defects in the tower hoisting and docking process: (1) The hook and the tower are connected by a flexible steel cable, and the tower is subject to a large wind load, which can easily cause the suspended tower to shake. Especially when approaching the lower tower section, collision or friction may occur, resulting in damage or even deformation of the flange surface. Therefore, during the tower installation process, the tower displacement and descent speed must be specially controlled; (2) During the docking of the two tower sections, the specified flange holes must be perfectly docked, which requires fine adjustment of the crane's lifting angle, and may require multiple construction workers to rely on manpower to rotate the suspended tower. Therefore, the entire tower docking process is risky, difficult, inefficient, and requires strict technical skills of the operators. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose a wind turbine tower auxiliary docking device and method. The device has a simple structure, the docking method is easy to implement, the docking process has a high safety factor, and the docking efficiency of the wind turbine tower is improved.

[0005] The technical solution of the present invention is: a wind power tower auxiliary docking device, which includes: The upper restraint mechanism comprises an annular upper collar and an upper air bag arranged inside the annular shape of the upper collar, wherein the inner diameter of the upper collar is larger than the outer diameter of the bottom of the upper tower section; The lower restraint mechanism comprises an annular lower collar and a lower air bag arranged inside the annular shape of the lower collar, wherein the inner diameter of the lower collar is larger than the outer diameter of the top of the lower sleeve; A telescopic mechanism connecting the upper restraining mechanism and the lower restraining mechanism comprises a first telescopic mechanism and a second telescopic mechanism, wherein the first telescopic mechanism comprises a plurality of first telescopic parts, and the second telescopic mechanism comprises a plurality of second telescopic parts, wherein the bottom end of the first telescopic part is hinged to the lower ring, the top end of the first telescopic part is hinged to the upper ring, the bottom end of the second telescopic part is hinged to the lower ring, and the top end of the second telescopic part is hinged to the first telescopic part; In the initial state, the first telescopic portion is arranged along the vertical direction, and the second telescopic portion is arranged at an incline.

[0006] In the present invention, an air pump is provided in both the upper airbag and the lower airbag, and gas is filled into the upper airbag or the lower airbag through the air pump, so that the inner side wall of the upper airbag and the outer wall of the upper tower section, or the inner side wall of the lower airbag and the outer wall of the lower tower section, are closely fitted; The sliding friction between the inner wall of the lower airbag and the lower tower section is greater than the gravity of the device, thereby achieving a fixed connection between the device and the lower tower section.

[0007] A plurality of first telescopic parts are evenly spaced along the circumferential direction of the upper ring and the lower ring; The first telescopic portion includes a first sliding sleeve and a first telescopic rod; The bottom of the first sliding sleeve is connected to the lower sleeve ring through a ball joint, the upper end of the first sliding tower is slidably connected to the first telescopic rod, the first telescopic rod is slidably arranged in the first sliding tower, and the top end of the first telescopic rod is connected to the upper sleeve ring through a ball joint; In the initial state, the first telescopic portion is in an unextended state.

[0008] The second telescopic portion includes a second sliding sleeve and a second telescopic rod; The bottom of the second telescopic rod is connected to the lower sleeve by a ball joint, the upper end of the second telescopic rod is slidably arranged in the second sliding sleeve, the lower end of the second sliding sleeve is slidably connected to the second telescopic rod, and the top end of the second sliding sleeve is connected to the upper sleeve by a ball joint; In the initial state, the second telescopic portion is in an unextended state.

[0009] The present invention also includes a method for achieving wind turbine tower docking using the above wind turbine tower auxiliary docking device, comprising the following steps: S1. Use a crane to hoist the auxiliary docking device so that the lower restraint mechanism is located outside the ring at the top of the lower tower section, and the lower restraint mechanism is fixed to the top outer wall of the lower tower section; use a crane to hoist the upper tower section into the upper restraint mechanism; at this time, the first telescopic part and the second telescopic part are both in the initial state; S2. Determine the angle deviation between the upper tower section and the lower tower section , through the extension of the second telescopic part, the first telescopic part is driven to rotate around the hinge point between the first telescopic part and the lower restraint mechanism, so that the rotation angle of the first telescopic part is , and the rotation direction is toward the angle deviation direction of the flange hole on the upper tower section relative to the flange hole on the lower tower section, and at the same time, the first telescopic part is extended; S3, fix the upper restraint mechanism to the bottom outer wall of the upper tower section, contract the second telescopic part, and drive the first telescopic part to rotate around the hinge point between it and the lower restraint mechanism, so that the rotation angle of the first telescopic part is , to achieve alignment between the center of the flange hole of the upper tower section and the center of the flange hole of the lower tower section, and at this time, the first telescopic part is arranged along the vertical direction; At the same time, the first telescopic part performs a contraction action, so that the absolute movement of the hinge point between the first telescopic part and the upper restraint mechanism is horizontal movement; S4. The crane lowers the upper tower section, and at the same time the first telescopic section continues to retract until the upper and lower tower sections are completely docked.

[0010] In step S1, after the lower restraining mechanism is located at the outer side of the top of the lower tower section, the air pump in the lower airbag is started to inflate the lower airbag, so that the lower airbag expands until the lower airbag is tightly fitted with the outer wall of the top of the lower tower section. At this time, the sliding friction between the lower restraining mechanism and the lower tower section is greater than the gravity of the device, thereby achieving a fixed connection between the device and the lower tower section. In step S3, the air pump in the upper airbag is started to inflate the upper airbag, causing the upper airbag to expand until the upper airbag fits tightly against the bottom exterior of the upper tower section, thereby achieving a fixed connection between the upper restraint mechanism and the upper tower section. At this time, the crane still hoists the upper tower section through the wire rope.

[0011] In step S2, the second telescopic parts in the second telescopic mechanism group move synchronously, and the telescopic distance of the second telescopic parts is ,

[0012] in, represents the distance between the bottom end of the first telescopic portion and the corresponding second telescopic portion; Indicates the length of the second telescopic portion in the initial state; Indicates the deflection of the first telescopic part After the angle is adjusted, the distance between the hinge point between the first telescopic part and the second telescopic part and the bottom end of the first telescopic part; The elongated length of the first telescopic portion is , the elongation length of the first telescopic part must meet ,in, It indicates the vertical distance between the upper and lower tower sections after the crane hoists the upper tower section into the upper restraint mechanism. .

[0013] In step S3, the second telescopic parts in the second telescopic mechanism are synchronously moved so that the second telescopic parts move at a speed of When the second telescopic part is retracted to the initial state, the top of the first telescopic part is driven to deflect around the bottom of the first telescopic part by the connection between the second telescopic part and the first telescopic part. ; At the same time, the first telescopic part in the first telescopic mechanism moves synchronously, so that the first telescopic part moves at a speed of To shrink, .

[0014] In step S4, after the upper tower section and the lower tower section are completely docked, the crane releases the connection with the upper tower section, and the air pumps in the upper airbag and the lower airbag are adjusted to separate the upper airbag from the bottom outer wall of the upper tower section, and the lower airbag from the top outer wall of the lower tower section; If the next tower section needs to be docked, repeat steps S1 to S4; if docking is not required, the wind turbine tower auxiliary docking device is vertically hoisted by a crane to recover the device.

[0015] The beneficial effects of the present invention are: The tower lifted by the crane has three degrees of freedom of movement, including the vertical movement of the tower, the rotation of the tower around the z-axis and the shaking of the tower. First, the upper restraint mechanism of the device described in the present application can constrain the swing of the tower; secondly, the present application can separate the rotation and vertical movement of the tower to first achieve precise alignment between the upper and lower tower sections, and then vertically lower the upper tower section to the lower tower section to achieve complete docking between the upper and lower tower sections. During the alignment and docking process, there is no need for the coordination of the crane and other docking equipment, which avoids the difficulty of coordination between the crane and other docking equipment. The docking process has a high safety factor and is easy to implement, which greatly improves the docking efficiency of the wind turbine tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the device of the present invention in an initial state; Figure 2 is a schematic diagram of the main structure of the device of the present invention in the initial state; Figure 3 It is a schematic diagram of the structure when the first group of telescopic mechanisms of the device of the present invention is in a tilted state; Figure 4 It is a schematic diagram of the speed decomposition of the first telescopic part and the second telescopic part connected thereto in the fifth step.

[0017] In the figure: 1 upper restraining mechanism; 101 upper sleeve ring; 102 upper airbag; 103 lifting ear; 2 lower restraining mechanism; 201 lower sleeve ring; 202 lower airbag; 3 first group of telescopic mechanisms; 301 first telescopic part; 4 second group of telescopic mechanisms; 401 second telescopic part. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] like Figures 1 to 3 As shown, a wind power tower auxiliary docking device described in the present invention comprises an upper restraining mechanism 1, a lower restraining structure 2, and a telescopic mechanism connecting the upper restraining mechanism and the lower restraining mechanism.

[0021] The upper restraint mechanism 1 includes an upper ring 101, which is in a circular shape, and an upper airbag 102 is provided on the inner side of the ring of the upper ring 101. The upper airbag is an inflatable rubber airbag. In the initial state, the upper airbag 102 is in an uninflated state, and the inner diameter of the upper ring 101 is slightly larger than the bottom outer diameter of the upper tower section. When the upper airbag 102 is filled with gas, the volume of the upper airbag 102 increases, and the inner surface of the upper restraint mechanism is closely fitted with the outer surface of the upper tower section, so that the upper restraint mechanism and the upper tower section are fixedly connected, thereby fixing the upper tower section.

[0022] Several lifting ears 103 are evenly spaced apart on the outer side of the ring of the upper collar 101, and the connection between the upper restraining mechanism and the crane is realized through the lifting ears, so that the device can be lifted by the crane conveniently.

[0023] The lower restraining mechanism 2 includes a lower collar 201, which is in a circular shape, and a lower airbag 202 is provided on the inner side of the ring of the lower collar 201. The lower airbag 202 is an inflatable rubber airbag. In the initial state, the lower airbag 202 is in an uninflated state. At this time, the inner diameter of the lower collar 202 is slightly larger than the outer diameter of the top of the lower tower section. When the lower airbag 202 is filled with gas, the volume of the lower airbag 202 increases, the inner surface of the lower restraining mechanism fits tightly with the outer surface of the lower tower section, and the sliding friction between the lower restraining mechanism and the outer wall of the lower tower section is greater than the gravity of the entire auxiliary docking device, thereby realizing a fixed connection between the entire device and the lower tower section. Therefore, the device can realize the connection between two adjacent upper and lower tower sections.

[0024] In this embodiment, the side walls of the upper airbag 102 and the lower airbag 202 that contact the tower are made of high-friction rubber, which increases the friction with the outer wall of the tower and reduces the collision wear on the outer wall of the tower. At the same time, an air pump is provided inside the upper airbag 102 and the lower airbag 202, and the expansion degree of the upper airbag 102 and the lower airbag 202 can be controlled by controlling the air intake of the air pump, so that the upper restraint mechanism fits the outer wall of the upper tower section and the lower restraint mechanism fits the outer wall of the lower tower section.

[0025] The telescopic mechanism includes a first telescopic mechanism group 3 and a second telescopic mechanism group 4. The first telescopic mechanism group 3 includes a plurality of first telescopic parts 301 evenly spaced along the annular circumference of the upper and lower rings. The first telescopic part 301 includes a first sliding sleeve and a first telescopic rod. The bottom end of the first sliding sleeve is connected to the lower ring 201 through a ball joint, and the top end of the first sliding sleeve is slidably connected to the first telescopic rod. The lower end of the first telescopic rod is slidably arranged in the first sliding sleeve, and the top end of the first sliding sleeve is connected to the upper ring 101 through a ball joint.

[0026] The second telescopic mechanism 4 includes a plurality of second telescopic parts 401, and the second telescopic parts 401 are arranged correspondingly to the first telescopic parts 301. The second telescopic parts 401 include a second sliding sleeve and a second telescopic rod, the bottom end of the second telescopic rod is connected to the lower ring 201 through a ball joint, and the top end of the second telescopic rod is slidably arranged in the second sliding sleeve. The bottom end of the second sliding sleeve is slidably connected to the second telescopic rod, and the top end of the second sliding sleeve is hinged to the first sliding sleeve of the corresponding first telescopic part.

[0027] In the initial state, the first telescopic part in the first group of telescopic mechanisms and the second telescopic part in the second group of telescopic mechanisms are both in an unextended state. At this time, the first telescopic part is arranged along the vertical direction, and the second telescopic part is arranged at an angle, that is, there is a certain angle between the second telescopic part and the vertical direction.

[0028] The telescopic distance and telescopic speed of the multiple first telescopic parts in the first telescopic mechanism can be synchronously controlled. When the first telescopic parts are in the vertical direction, the vertical lowering of the upper tower section can be guided by controlling the synchronous contraction of the multiple first telescopic parts, and the shaking of the upper tower section during the lowering process can also be effectively prevented.

[0029] Similarly, the telescopic distance and telescopic speed of the multiple second telescopic parts in the second telescopic mechanism can also be synchronously controlled. When the upper tower section is hoisted by the wire rope, and the upper restraining mechanism clamps the bottom of the upper tower section, and the lower restraining mechanism clamps the top of the lower tower section, the upper end of the first telescopic part rotates around the lower end through the synchronous telescopic of the second telescopic part, and at the same time, the first telescopic part drives the upper tower section to rotate, so as to realize the rotation of the upper tower section around the tower axis, and the rotation angle generated by the telescopic is not less than the angle between the flange holes of the adjacent upper and lower tower sections and the connecting line of the tower centerline, so as to realize the alignment between the flange holes of the adjacent upper and lower tower sections.

[0030] The present application also includes a method for achieving wind turbine tower docking using the above-mentioned wind turbine tower auxiliary docking device, and the method specifically includes the following steps.

[0031] The first step is to hang the hook of the crane wire rope on the lifting lug 103 of the upper restraint mechanism 1, and lift the wind power tower auxiliary docking device by the crane until the lower restraint mechanism 2 of the device is inserted into the top of the lower tower, and adjust the air pump in the lower airbag 202 in the lower restraint mechanism 2 to expand the lower airbag until the lower airbag fits tightly with the lower tower. Then, release the hook between the crane and the upper restraint mechanism, and through the friction between the entire device and the tower, the device is stably fixed on the top of the lower tower.

[0032] In the second step, the first telescopic part in the first telescopic mechanism and the second telescopic part in the second telescopic mechanism in the device are both in the initial state. The upper tower section is lifted by the crane wire rope, and the upper tower section is slowly inserted into the upper ring of the upper restraining mechanism. The air pump in the upper airbag 102 is started to inflate the upper airbag, and the upper airbag expands until the inner wall of the upper airbag 102 is slightly in contact with the outer wall of the upper tower section. The slight contact can ensure that there is still relative up and down movement and relative circumferential rotation between the upper restraining mechanism and the upper tower section, and at the same time, it can prevent the upper tower section from swinging significantly under the action of wind load or crane load.

[0033] As mentioned above, since there can still be relative up and down movement between the upper restraint mechanism and the upper tower section, the upper tower section is lowered continuously in the upper restraint mechanism under the lifting action of the crane until the vertical distance between the upper and lower tower sections is less than 10 cm. When the vertical distance between the upper and lower tower sections is n, the crane stops lowering the upper tower section, and at this time, the crane and the upper tower section are still connected by the crane wire rope, that is, the position of the upper tower section is fixed by the crane.

[0034] The third step is to determine the angle deviation of the upper and lower tower sections after the positions of the two adjacent upper and lower tower sections are fixed. .

[0035] In this embodiment, angle scales are marked on the flanges of the adjacent upper and lower tower sections, and then the angle deviation between the flange hole of the upper tower section and the flange hole of the lower tower section is measured by laser method. Specifically, a laser can be emitted from top to bottom at the control center of the flange hole of the upper tower section, and when the laser falls on the angle scale of the flange of the lower tower section, the angle scale value pointed by the laser is the angle deviation between the upper tower section and the lower tower section.

[0036] The fourth step is to simultaneously start the second telescopic part in the second telescopic mechanism to push the first telescopic part in the first telescopic mechanism to form a certain angle with the vertical direction, and the angle is .

[0037] First, the deflection direction of the first telescopic portion needs to be determined.

[0038] In the present application, since the lower restraint mechanism is fixedly connected to the lower tower section, and the gravity of the lower tower section is relatively large, during the extension and retraction process of the first telescopic part, the force generated during the extension and retraction process will not have any effect on the lower tower section, that is, the lower tower section will not produce any movement changes. At the same time, since the first telescopic part is connected to the lower sleeve, the position of the lower end of the first telescopic part will not change, that is, during the process of the first telescopic part being pushed and deflected by the second telescopic part, the top end of the first telescopic part rotates around its bottom end.

[0039] As described above, since the position of the lower tower section will not change, the position of the lower restraining mechanism fixedly connected to the lower tower section will not change either. Therefore, the present application takes the lower tower section as the reference, and the angle deviation of the flange hole of the upper tower section relative to the flange hole of the lower tower section is .

[0040] The second telescopic part moves to deflect the first telescopic part along the ball joint connection point between the first telescopic part and the lower restraint mechanism, and the top end of the first telescopic part deflects toward the deviation direction of the flange hole of the upper tower section relative to the flange hole of the lower tower section.

[0041] Secondly, in the present application, the first telescopic part is deflected at an angle by the extension and contraction of the second telescopic part, and during the deflection of the first telescopic part, if the length of the first telescopic part remains unchanged, the first telescopic part will be displaced axially. In order to realize the downward pull-down alignment process of the first telescopic part in the sixth step, it is necessary to ensure that there is a certain distance between the upper restraint mechanism and the lower restraint mechanism. Therefore, the first telescopic part needs to be extended in this step.

[0042] In the present application, the second telescopic part in the second telescopic mechanism is simultaneously started, so that the telescopic distance of the second telescopic part is , ; in, represents the distance between the bottom end of the first telescopic portion and the corresponding second telescopic portion; Indicates the length of the second telescopic portion in the initial state; Indicates the deflection of the first telescopic part After the angle is adjusted, the distance between the hinge point between the first telescopic part and the second telescopic part and the bottom end of the first telescopic part.

[0043] At the same time, the first telescopic part in the first telescopic mechanism is started at the same time, so that the extension length of the first telescopic part is c , the elongation length of the first telescopic part must meet .

[0044] Since the first telescopic part and the upper tower section are in a state of relative axial movement and relative rotation, the first telescopic part deflects During the process of adjusting the angle, the upper tower section is in a stationary state under the action of the crane and does not rotate with the first telescopic section.

[0045] The fifth step is to start the second telescopic part in the second telescopic mechanism and the first telescopic part in the first telescopic mechanism, and drive the upper tower section to deflect by the first telescopic part. , achieving vertical alignment between the flange hole of the upper tower section and the flange hole of the lower tower section, and at the same time making the top of the first telescopic part move in the horizontal direction, thereby ensuring that the horizontal position of the upper tower section does not change.

[0046] First, the air pump in the upper airbag of the upper restraining mechanism is started to expand the upper airbag, so that the inner side of the upper airbag is in close contact with the outer wall of the upper tower section, thereby achieving a fixed connection between the upper restraining mechanism and the upper tower section.

[0047] Next, the second telescopic part in the second telescopic mechanism is started at the same time. During the extension and retraction of the second telescopic part, the top end of the first telescopic part is driven to deflect around the bottom end of the first telescopic part by the connection between the second telescopic part and the first telescopic part. That is, in this step, the deflection direction of the first deflection unit is the same as the deflection angle of the first deflection unit in the fourth step, but the deflection direction is opposite.

[0048] At the same time, the first telescopic part of the first telescopic mechanism is started, so that the first telescopic part moves at a speed of To shrink, .

[0049] like Figure 4 As shown in the figure O Point A represents the hinge point between the first telescopic part and the lower restraint mechanism, point P represents the hinge point between the first telescopic part and the upper restraint mechanism, point M represents the hinge point between the second telescopic part and the lower restraint mechanism, and point N represents the hinge point between the first telescopic part and the corresponding second telescopic part.

[0050] The absolute motion of point N on the second telescopic part is the telescopic motion along the second telescopic part, and the speed is . It can be decomposed into the sliding speed of the second slide sleeve along the first telescopic part , and the circular motion of the first telescopic part around point O, with a speed of , which is perpendicular to the ON line. In addition, the horizontal velocity of point N is defined as .

[0051] ; ; in, Represents the angle between the first telescopic portion and the second telescopic portion in the fourth step.

[0052] According to the velocity composition theorem and geometric relationship, the velocity of point P on the first telescopic part can be obtained: for: ; It can be seen that during the extension and retraction process of the second telescopic part, the first telescopic part will be driven to rotate around the hinge point between the first telescopic part and the lower restraint mechanism, i.e., point O. At this time, the top end of the first telescopic part will move in a direction perpendicular to the first telescopic part, i.e., point O. The first telescopic part and the upper tower section fixed thereto can not only rotate horizontally, but also move vertically upward. Since the upper tower section is hoisted by a crane during the actual construction process, the first telescopic part must be rotated synchronously with the crane; otherwise, since the telescopic force of the first telescopic part is much smaller than the gravity of the upper tower section, the first telescopic part cannot rotate, and the angle offset cannot be achieved.

[0053] To this end, in the present application, the contraction action of the first telescopic part is used to offset the rotation in the vertical direction, and the first telescopic part and the upper tower section only produce horizontal rotation, and no vertical up and down movement.

[0054] That is to say, the absolute motion of point P on the first telescopic part in the present application is horizontal motion, and the speed is , the involved motion of the first telescopic part during the contraction of the second telescopic part is a circular motion around point O, and its speed is , the contraction speed of the first telescopic part is , according to the velocity composition theorem and geometric relationship, we can get: ; .

[0055] In the fourth step, the first telescopic portion is deflected relative to the vertical direction by an angle When the angle between the second telescopic portion and the horizontal direction is From the sine theorem we know that: ;

[0056] From the similarity ratio, we can get: ; Combining the above formulas, we can get: .

[0057] Through the contraction of the second telescopic part and the contraction of the first telescopic part, the first telescopic part can drive the upper tower section to deflect by an angle of , so that the flange holes of the upper tower section and the flange holes of the lower tower section are completely aligned, and during the rotation of the upper tower section, the upper tower section only produces horizontal deflection, and does not produce vertical movement, without the need for crane action coordination, and the alignment between the upper and lower flange holes is achieved very simply and at a very low cost. After the upper tower section and the lower tower section are completely aligned, the first telescopic part rotates to the vertical direction, and at this time the first telescopic part is in an extended state.

[0058] In the sixth step, the crane slowly lowers the lower tower section, and the first telescopic part shrinks synchronously at a certain speed until the upper and lower tower sections are completely connected, and the flange holes of the upper and lower tower sections are fixedly connected by bolts. The crane loosens the connection with the upper tower section, adjusts the air pump in the upper airbag and the air pump in the lower airbag, separates the upper airbag from the bottom outer wall of the upper tower section, and separates the lower airbag from the top outer wall of the lower tower section.

[0059] Step 7: If the next tower section needs to be docked, repeat steps 1 to 6. If there is no need to dock other towers, the crane vertically lifts the wind turbine tower auxiliary docking device to separate the device from the tower, thereby realizing the recovery of the device.

[0060] The above is a detailed introduction to a wind power tower auxiliary docking device and method provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professional and technical personnel in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professional and technical personnel in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed in this article.

Claims

1. A wind power tower auxiliary docking device, characterized in that: include: The upper restraint mechanism comprises an annular upper collar and an upper air bag arranged inside the annular shape of the upper collar, wherein the inner diameter of the upper collar is larger than the outer diameter of the bottom of the upper tower section; The lower restraint mechanism comprises an annular lower collar and a lower air bag arranged inside the annular shape of the lower collar, wherein the inner diameter of the lower collar is larger than the outer diameter of the top of the lower sleeve; A telescopic mechanism connecting the upper restraining mechanism and the lower restraining mechanism comprises a first telescopic mechanism and a second telescopic mechanism, wherein the first telescopic mechanism comprises a plurality of first telescopic parts, and the second telescopic mechanism comprises a plurality of second telescopic parts, wherein the bottom end of the first telescopic part is hinged to the lower ring, the top end of the first telescopic part is hinged to the upper ring, the bottom end of the second telescopic part is hinged to the lower ring, and the top end of the second telescopic part is hinged to the first telescopic part; In the initial state, the first telescopic portion is arranged along the vertical direction, and the second telescopic portion is arranged at an incline.

2. A wind turbine tower auxiliary docking device according to claim 1, characterized in that: An air pump is provided in both the upper airbag and the lower airbag, and gas is filled into the upper airbag or the lower airbag through the air pump, so that the inner wall of the upper airbag and the outer wall of the upper tower section, or the inner wall of the lower airbag and the outer wall of the lower tower section, are closely fitted; The sliding friction between the inner wall of the lower airbag and the lower tower section is greater than the gravity of the device, thereby achieving a fixed connection between the device and the lower tower section.

3. The wind turbine tower auxiliary docking device according to claim 1, characterized in that: A plurality of first telescopic parts are evenly spaced along the circumferential direction of the upper ring and the lower ring; The first telescopic portion includes a first sliding sleeve and a first telescopic rod; The bottom of the first sliding sleeve is connected to the lower sleeve ring through a ball joint, the upper end of the first sliding tower is slidably connected to the first telescopic rod, the first telescopic rod is slidably arranged in the first sliding tower, and the top end of the first telescopic rod is connected to the upper sleeve ring through a ball joint; In the initial state, the first telescopic portion is in an unextended state.

4. A wind power tower auxiliary docking device according to claim 3, characterized in that: The second telescopic portion includes a second sliding sleeve and a second telescopic rod; The bottom of the second telescopic rod is connected to the lower sleeve by a ball joint, the upper end of the second telescopic rod is slidably arranged in the second sliding sleeve, the lower end of the second sliding sleeve is slidably connected to the second telescopic rod, and the top end of the second sliding sleeve is connected to the upper sleeve by a ball joint; In the initial state, the second telescopic portion is in an unextended state.

5. A method for docking wind turbine towers according to the wind turbine tower auxiliary docking device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Use a crane to hoist the auxiliary docking device so that the lower restraint mechanism is located outside the ring at the top of the lower tower section, and the lower restraint mechanism is fixed to the top outer wall of the lower tower section; use a crane to hoist the upper tower section into the upper restraint mechanism; at this time, the first telescopic part and the second telescopic part are both in the initial state; S2. Determine the angle deviation between the upper tower section and the lower tower section , through the extension of the second telescopic part, the first telescopic part is driven to rotate around the hinge point between the first telescopic part and the lower restraint mechanism, so that the rotation angle of the first telescopic part is , and the rotation direction is toward the angle deviation direction of the flange hole on the upper tower section relative to the flange hole on the lower tower section, and at the same time, the first telescopic part is extended; S3, fix the upper restraint mechanism to the bottom outer wall of the upper tower section, contract the second telescopic part, and drive the first telescopic part to rotate around the hinge point between it and the lower restraint mechanism, so that the rotation angle of the first telescopic part is , to achieve alignment between the center of the flange hole of the upper tower section and the center of the flange hole of the lower tower section, and at this time, the first telescopic part is arranged along the vertical direction; At the same time, the first telescopic part performs a contraction action, so that the absolute movement of the hinge point between the first telescopic part and the upper restraint mechanism is horizontal movement; S4. The crane lowers the upper tower section, and at the same time the first telescopic section continues to retract until the upper and lower tower sections are completely docked.

6. The method for connecting wind turbine towers according to claim 5, characterized in that: In step S1, after the lower restraining mechanism is located at the outer side of the top of the lower tower section, the air pump in the lower airbag is started to inflate the lower airbag, so that the lower airbag expands until the lower airbag is tightly fitted with the outer wall of the top of the lower tower section. At this time, the sliding friction between the lower restraining mechanism and the lower tower section is greater than the gravity of the device, thereby achieving a fixed connection between the device and the lower tower section. In step S3, the air pump in the upper airbag is started to inflate the upper airbag, causing the upper airbag to expand until the upper airbag fits tightly against the bottom exterior of the upper tower section, thereby achieving a fixed connection between the upper restraint mechanism and the upper tower section. At this time, the crane still hoists the upper tower section through the wire rope.

7. The method for connecting wind turbine towers according to claim 5, characterized in that: In step S2, the second telescopic parts in the second telescopic mechanism group move synchronously, and the telescopic distance of the second telescopic parts is , ； in, represents the distance between the bottom end of the first telescopic portion and the corresponding second telescopic portion; Indicates the length of the second telescopic portion in the initial state; Indicates the deflection of the first telescopic part After the angle is adjusted, the distance between the hinge point between the first telescopic part and the second telescopic part and the bottom end of the first telescopic part; The elongated length of the first telescopic portion is , the elongation length of the first telescopic part must meet ,in, It indicates the vertical distance between the upper and lower tower sections after the crane hoists the upper tower section into the upper restraint mechanism. .

8. The method for connecting wind turbine towers according to claim 5, characterized in that: In step S3, the second telescopic parts in the second telescopic mechanism are synchronously moved so that the second telescopic parts move at a speed of When the second telescopic part is retracted to the initial state, the top of the first telescopic part is driven to deflect around the bottom of the first telescopic part by the connection between the second telescopic part and the first telescopic part. ; At the same time, the first telescopic part in the first telescopic mechanism moves synchronously, so that the first telescopic part moves at a speed of To shrink, 。 9. The method for connecting wind turbine towers according to claim 5, characterized in that: In step S4, after the upper tower section and the lower tower section are completely docked, the crane releases the connection with the upper tower section, and the air pumps in the upper airbag and the lower airbag are adjusted to separate the upper airbag from the bottom outer wall of the upper tower section, and the lower airbag from the top outer wall of the lower tower section; If the next tower section needs to be docked, repeat steps S1 to S4; if docking is not required, the wind turbine tower auxiliary docking device is vertically hoisted by a crane to recover the device.

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