CN221231835U - Wind power tower tube welding support - Google Patents

Abstract

The utility model discloses a wind power tower welding bracket which comprises a placing table for placing a tower, wherein two rows of limiting mechanisms are adjustably arranged on the upper surface of the placing table, each limiting mechanism comprises an extrusion piece, a pressing piece is further arranged above the placing table, one end of the pressing piece is fixed at the top of an adjusting piece, the adjusting piece is arranged on two sides of the placing table, the placing table comprises a bottom plate and placing blocks, at least three groups of placing blocks are arranged, the placing blocks are equally arranged on the bottom plate, and a space surrounded by the extrusion pieces on the two sides, the pressing piece on the top and the placing blocks on the bottom forms a space for accommodating the tower. When the tower drum type welding machine is used, the positions of the plurality of placing blocks are adjusted according to the length of the tower drum, the plurality of placing blocks are arranged at equal dividing positions of the tower drum, the positions of the adjusting extrusion pieces are convenient for limiting the tower drum to prevent the tower drum from rolling, the weight of the tower drum is evenly shared by the equal dividing positions of the placing blocks, and the adjusting pieces arranged on two sides drive the pressing pieces to evenly press down the connecting parts of the top of the tower drum, so that the welding firmness is improved, and the probability of fracture is reduced.

Description

Wind power tower tube welding support

Technical Field

The utility model relates to the field of welding of wind power towers, in particular to a welding bracket of a wind power tower.

Background

The wind power tower is a tower pole of wind power generation, mainly plays a supporting role in a wind power generator set, and absorbs the vibration of the set. The production process flow of the wind power tower is generally as follows: and (3) blanking by a numerical control cutting machine, chamfering a thick plate, performing spot welding, positioning and welding an inner longitudinal seam and an outer longitudinal seam after plate bending forming by a plate bending machine, performing roundness inspection, performing secondary rounding if a problem exists, performing assembly-to-point welding on a roller frame by adopting a hydraulic assembly after welding a single-section cylinder, and then welding the inner circumferential seam and the outer circumferential seam.

Among the prior art, the application number is CN202223049482.9 a wind power tower bobbin pile welding protection steady rest, but among the above-mentioned scheme, through "move the bobbin to the brace table top, rotate the bobbin, make the joint position upwards, rethread carousel rotates the regulation pole, drive both sides clamping seat through the regulation pole and remove, fix the bobbin through both sides clamping seat, restart the pneumatic cylinder, drive the movable block through the pneumatic cylinder and move to the bobbin top, restart the pneumatic cylinder, drive the positioning seat through the pneumatic cylinder and remove, extrude the bobbin top through the positioning seat, thereby fix the bobbin," but the position of different specification wind power tower barrel length is different, equally dividing position to evenly share bobbin weight and the aforesaid through the positioning seat to extrude the bobbin top of being difficult to move to the bobbin, but need move the positioning seat and continue to weld when welding to the position that the bobbin outer wall was extruded by the positioning seat, but the outside of bobbin loses the power of extrusion when moving the positioning seat and removes and remove its welded part and break and lead to welding failure in being inconvenient for when welding to one side of positioning seat removes the extrusion piece and carry out the welding position control and carry out the welding position and prevent that the welding failure from leading to weld the firm one side of not to unclamping again to weld. How to invent a welding bracket for a wind power tower to improve the problems becomes a problem to be solved urgently by the person skilled in the art.

Disclosure of utility model

In order to solve the problems, the utility model provides a welding bracket for wind power towers, which aims to improve the problems that when the wind power towers with different specifications are welded, the positions of a dovetail groove and a clamping seat are relatively fixed, the dovetail groove and the clamping seat are difficult to move to the equal dividing position of a bobbin to uniformly share the weight of the bobbin, the top of the bobbin is extruded by a positioning seat, when the welding is performed, the positioning seat is required to be moved to continue welding when the welding is performed to the position of the outer wall of the bobbin extruded by the positioning seat, but when the positioning seat is moved, the extrusion force is lost outside the bobbin, so that the welding part is easy to break, and the welding failure is caused.

The object of the utility model is achieved in the following way:

The utility model provides a wind-powered electricity generation tower section of thick bamboo welding support, is including placing the platform of placing the tower section of thick bamboo, establishes two rows of stop gear with placing the bench surface is adjustable, and stop gear includes the extrusion piece, still is provided with down the casting die in place the bench side, and casting die one end is fixed at the regulating part top down, and the regulating part is installed in place the bench both sides, place the bench and include the bottom plate and place the piece, place the piece and be provided with three at least groups, all place the piece and equally divide and install on the bottom plate, the space that the casting die of both sides, casting die and the place piece of bottom enclose constitutes the space that holds the tower section of thick bamboo.

The wind power tower cylinder welding bracket is characterized in that four extrusion parts are arranged, every two extrusion parts are arranged in one row, each extrusion part comprises an L-shaped limiting plate, a threaded connecting rod and a push plate, a transverse bar-shaped hole is formed in the bottom plate of each L-shaped limiting plate, an I-shaped limiting slide block is arranged at the bottom of each push plate, the I-shaped limiting slide block penetrates through each transverse bar-shaped hole to be in sliding connection with the bottom of each L-shaped limiting plate, and the side wall of each push plate is arranged on the side plate of each L-shaped limiting plate through the threaded connecting rod; the bottom plate is provided with a vertical bar-shaped hole, the direction of the vertical bar-shaped hole is parallel to the axial direction of the tower, the bottom of the L-shaped limiting plate is provided with an L-shaped limiting slide block, the L-shaped limiting slide block is inserted into the vertical bar-shaped hole and then is fastened by a limiting bolt, and the L-shaped limiting plate, the H-shaped limiting slide block, the threaded connecting rod, the transverse bar-shaped hole, the L-shaped limiting slide block and the vertical bar-shaped hole are mutually matched to form an adjustable device of the limiting mechanism.

Above-mentioned wind-powered electricity generation tower section of thick bamboo welding stent, screw thread connecting rod tip is provided with the rotation handle.

The wind power tower welding support is provided with a rubber pad on one side surface of the push plate far away from the threaded connecting rod, and a rubber anti-slip pad is fixedly arranged at the bottom of the limit bolt 216.

Above-mentioned wind-powered electricity generation tower section of thick bamboo welding stent, place the platform and include the bottom plate and place the piece, it is provided with three group at least to place the piece, three group place the piece and equally divide and install on the bottom plate, the top of placing the piece is for sunken setting, the bottom symmetry of placing the piece is provided with two "L" shape spacing sliders, spacing spout has been seted up to the surface of bottom plate and the L shape spacing slider department of corresponding of placing the piece, place the piece and pass through the spacing slidable mounting of L shape spacing slider in the top of bottom plate, the both ends fixedly connected with screw ear of placing the piece, a plurality of screw holes have evenly been seted up on the bottom plate and the position of placing the piece both sides, screw ear at the both ends of placing the piece passes through fastening bolt fixed connection in the screw hole at bottom plate top, it removes the restriction of placing the piece to screw bolt to twist again and make the strength equally divide the holding the tower section of thick bamboo and make the holding and screw up the bolt and fix placing the piece.

Above-mentioned wind-powered electricity generation tower section of thick bamboo welding support, the regulating part is provided with three groups, a set of regulating part is located one side of placing the platform, two other groups are located the opposite side of placing the platform, the regulating part includes lead screw and support column, when placing one side of the platform only one set of regulation pole, the axis of rotation of motor is connected to lead screw one end, the other end rotates and is connected in first bearing frame, motor and first bearing frame are installed on the bottom plate lateral wall, the support column has been cup jointed to the lead screw outside, the support column passes through screw nut and lead screw transmission connection, and the bottom side of support column and the spacing sliding connection of bottom plate's lateral wall, the first pneumatic cylinder of top fixedly connected with of support column, first casting die fixedly connected with the flexible end of first pneumatic cylinder, the bottom surface of first casting die is the arcwall; when two groups of adjusting rods are arranged on the other side of the placing table, a first bearing and a second bearing are respectively arranged at two ends of a screw rod (222), the first bearing and the second bearing are respectively arranged on the first bearing seat and the second bearing seat, the first bearing seat and the second bearing seat are respectively fixed at two ends of the side wall of the bottom plate, the middle part of the screw rod is arranged in the middle of the side wall of the bottom plate through the bearings, support columns are sleeved on the outer parts of the two sides of the screw rod and are connected with each other through screw rod nuts and screw rod transmission, the bottom side surfaces of the support columns are in limit sliding connection with the side wall of the bottom plate, the tops of the two support columns are respectively fixedly connected with a second hydraulic cylinder and a third hydraulic cylinder, the second pressing piece and the third pressing piece are respectively fixedly connected with telescopic ends of the second hydraulic cylinder and the third hydraulic cylinder, and the bottom surface of the pressing piece is an arc-shaped surface.

Above-mentioned wind-powered electricity generation tower section of thick bamboo welding support, the bottom side of support column and the lateral wall of bottom plate set up slide column and spout respectively, slide column and spout assorted.

Compared with the prior art, the utility model has the following technical effects:

According to the wind power tower welding bracket obtained through the design, when the wind power tower welding bracket is used, the lengths of the tower are adjusted to enable the plurality of placing blocks to be located at the equal dividing positions of the tower as far as possible, the limiting bolts are adjusted to be matched with the limiting sliding blocks below the limiting plates to adjust the positions of the extrusion pieces so as to limit and prevent the tower from rolling, the extrusion pieces are convenient to move to the equal dividing positions of the bobbins to uniformly share the weight of the bobbins, two groups of adjusting pieces are arranged on one side to drive the extrusion pieces to press down the connecting part of the top of the tower, when one group of adjusting pieces and the extrusion pieces are welded, the adjusting pieces on one side are controlled to drive the screw rod to enable the supporting columns to move through the motor when the adjusting pieces are required to move to weld, the top of the tower after the welding is completed, the extrusion pieces which are required to be removed are moved to continue welding, the other extrusion pieces are convenient to move to one side after the welding is completed, the welding is controlled to be carried out, and then the welding is carried out on one side which is not welded, so that the firmness of the welding is increased, and the probability of fracture is reduced.

Drawings

FIG. 1 is a schematic diagram of a side structure of the present utility model;

FIG. 2 is a schematic diagram of another embodiment of the present utility model;

FIG. 3 is a schematic view of a limiting mechanism according to the present utility model;

FIG. 4 is a partially exploded view of the placement table of the present utility model;

fig. 5 is a schematic view of the extrusion split structure of the present utility model.

In the figure: 110-tower; 120-placing a table; 121-a bottom plate; 122-placing a block; 123-fastening bolts; 200-a limiting mechanism; 210-extrusion; 211-limiting plates; 212-a threaded rod; 213-push plate; 214-rubber pad; 215-a handle; 216-limit bolts; 220-an adjusting member; 221-a second bearing block; 222-screw rod; 223-support column; 224—a first bearing block; 225-a first hydraulic cylinder; 226-a second bearing block; 230-a first hold-down; 231-a second press block; 232-third press block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The construction and operation of the present utility model will be described in detail with reference to fig. 1-5.

The utility model provides a wind-powered electricity generation tower section of thick bamboo welding stent, is including placing the platform 120 of placing tower section of thick bamboo 110, establishes two rows of stop gear 200 on placing the bench surface with adjustable, and stop gear includes extrusion piece 210, still is provided with down casting piece 230 in placing a top, and casting piece one end is fixed at the regulating part 220 top down, and the regulating part 220 is installed in placing a both sides, place the platform 120 and include bottom plate 121 and place piece 122, place piece 122 and be provided with three group at least, all place piece 122 and equally divide and install on bottom plate 121, the space that the casting piece of both sides, top and the place piece of bottom enclose constitutes the space that holds the tower section of thick bamboo.

The placement stage 120 is used to place the tower 110 against rolling. The extrusion 210 is installed on the placing table 120, and is used for limiting the extrusion of the tower 110 with different lengths to prevent rolling, three adjusting pieces 220 are installed on two sides of the placing table 120, the extrusion piece is matched with the lower extrusion piece to extrude the tower 110, the joint of the tower 110 is attached through the matching of the three groups of adjusting pieces 220 and the lower extrusion piece, and the three groups of adjusting pieces 220 and the lower extrusion piece are mutually matched to reduce the fracture of the welding part caused by the fact that the lower extrusion piece 230 does not press down above the tower 110 during welding.

According to the wind power tower welding bracket, four groups of extrusion pieces 210 are arranged, each two groups are arranged in one row, each extrusion piece comprises an L-shaped limiting plate 211, a threaded connecting rod 212 and a push plate 213, a transverse bar-shaped hole is formed in the bottom plate of each L-shaped limiting plate, an I-shaped limiting slide block is arranged at the bottom of each push plate, the I-shaped limiting slide block penetrates through each transverse bar-shaped hole to be in sliding connection with the bottom of each L-shaped limiting plate, and the side wall of each push plate is arranged on the side plate of each L-shaped limiting plate through the threaded connecting rod 212; the bottom plate 121 is provided with a vertical bar-shaped hole, the direction of the vertical bar-shaped hole is parallel to the axial direction of the tower, the bottom of the L-shaped limiting plate is provided with an L-shaped limiting slide block, the L-shaped limiting slide block is inserted into the vertical bar-shaped hole and then is fastened by a limiting bolt 216, and the L-shaped limiting plate, the I-shaped limiting slide block, the threaded connecting rod, the transverse bar-shaped hole, the L-shaped limiting slide block and the vertical bar-shaped hole are mutually matched to form an adjustable device of the limiting mechanism. The end part of the threaded connecting rod is provided with a rotating handle 215, and the threaded rod 212 is driven by the rotating handle 215 to be matched with the limiting plate 211 for pushing the push plate 213 to move so as to limit the tower 110 and prevent the tower from rolling.

The L-shaped limiting sliding block is used for limiting the limiting plate 211, so that the limiting plate 211 can move linearly and is prevented from falling off, the limiting bolt 216 is used for fixing the position of the limiting plate 211, and when the limiting bolt 216 is screwed to be in threaded connection with the limiting plate 211, the limiting bolt 216 extrudes the bottom plate 121 to limit.

According to the wind power tower welding bracket, one side surface of the push plate 213, which is far away from the threaded connecting rod, is provided with the rubber pad 214, and the bottom of the limit bolt 216 is fixedly provided with the rubber anti-skid pad.

According to the wind power tower welding bracket, the top of the placement block 122 is arranged in a concave manner, two L-shaped limiting sliding blocks are symmetrically arranged at the bottom of the placement block 122, limiting sliding grooves are formed in the surface of the bottom plate 121 and the corresponding positions of the L-shaped limiting sliding blocks of the placement block 122, the placement block 122 is installed above the bottom plate 121 in a limiting sliding manner through the L-shaped limiting sliding blocks, screw hole lugs are fixedly connected to two ends of the placement block 122, a plurality of screw holes are uniformly formed in the positions of the bottom plate 121 and two sides of the placement block 122, the screw hole lugs at two ends of the placement block 122 are fixedly connected to the screw holes at the top of the bottom plate 121 through fastening bolts 123, the limitation of the placement block 122 on the placement block 122 is removed through screwing the fastening bolts 123, and the force for supporting the tower 110 is equally distributed, and then the fastening bolts 123 are screwed to fix the placement block 122.

The wind power tower welding bracket comprises three groups of adjusting pieces 220, wherein one group of adjusting pieces 220 is positioned on one side of a placing table, the other two groups of adjusting pieces 220 are positioned on the other side of the placing table 120, the adjusting pieces 220 comprise a screw rod 222 and a supporting column 223, when one group of adjusting pieces 220 are arranged on one side of the placing table, one end of the screw rod 222 is connected with a rotating shaft of a motor, the other end of the screw rod is rotatably connected with a first bearing seat 224, the motor and the first bearing seat are arranged on the side wall of a bottom plate, the supporting column 223 is sleeved outside the screw rod 222, the supporting column 223 is in transmission connection with the screw rod 222 through screw rod nuts, the bottom side surface of the supporting column 223 is in limit sliding connection with the side wall of the bottom plate 121, the top of the supporting column 223 is fixedly connected with a first hydraulic cylinder 225, a first hold-down piece 230 is fixedly connected with the telescopic end of the first hydraulic cylinder 225, and the bottom surface of the first hold-down piece is an arc surface; when two groups of adjusting rods 220 are arranged on the other side of the placing table, a first bearing and a second bearing are respectively arranged at two ends of the screw rod 222, the screw thread directions of two sides of the screw rod are opposite by taking the center of the screw rod as the center, the first bearing and the second bearing are respectively arranged on the first bearing seat and the second bearing seat, the first bearing seat 224 and the second bearing seat 221 are respectively fixed at two ends of the side wall of the bottom plate, the middle part of the screw rod 222 is arranged at the middle part of the side wall of the bottom plate through the bearings, support columns 223 are sleeved outside the two sides of the screw rod 222 and are in transmission connection with the screw rod 222 through screw nuts, the bottom side surfaces of the support columns 223 are in limit sliding connection with the side wall of the bottom plate 121, the tops of the two support columns are respectively fixedly connected with a second hydraulic cylinder 225 and a third hydraulic cylinder, the second hold-down piece 231 and the third hold-down piece 232 are respectively fixedly connected with the telescopic ends of the second hydraulic cylinder and the third hydraulic cylinder, and the bottom surface of the hold-down piece is an arc surface.

According to the welding bracket for the wind power tower, the side surface of the bottom of the supporting column 223 and the side wall of the bottom plate 121 are respectively provided with a sliding column and a sliding groove, and the sliding column is matched with the sliding groove. According to the specification model of a tower, the interval between the second pushing piece, the third pushing piece and the first pushing piece can be set, the motor can be started to adjust the position of the first pushing piece, the interval between the second pushing piece 231 and the third pushing piece 232 can be manually screwed by a screw rod, and the screw rod can be driven to rotate by the motor through the motor mounted at the end part of the screw rod, so that the two support columns can be reversely or oppositely displaced, and the interval between the second pushing piece and the third pushing piece at the top of the two support columns can be adjusted.

Working principle: the coil Cheng Da is placed on the plurality of placing blocks 122 after the barrel 110 is rolled, the positions of the plurality of placing blocks 122 are adjusted in advance according to the length of the barrel 110, so that the plurality of placing blocks 122 are positioned at the equal dividing position of the barrel 110 as far as possible, the push plate 213 is driven by the rotating handle 215 to be close to the barrel 110, the outer wall of the barrel 110 is extruded through the rubber pad 214, the limiting bolts 216 are matched with the limiting blocks below the limiting plates 211 to adjust the positions of the extrusion pieces 210 so as to limit the barrel 110 and prevent the barrel 110 from rolling, the two groups of adjusting pieces 220 are arranged on one side to drive the extrusion pieces 230 to push down the connecting part of the top of the barrel 110, when the barrel is welded to the positions of the group of adjusting pieces 220 and the extrusion pieces 230, the adjusting pieces 220 on one side are controlled to move through the motor 221 to drive the lead screw 222 to move the support column 223, the top of the barrel 110 after the barrel is moved to the welded side to press the top of the barrel 110, and the extrusion pieces 230 to be removed are removed to continue welding.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.

Claims (7)

1. The utility model provides a wind-powered electricity generation tower section of thick bamboo welding stent, is including placing a platform (120) of placing a tower section of thick bamboo, its characterized in that: two rows of stop gear (200) are established with adjustable in placing bench upper surface, and stop gear includes extrusion piece (210), still is provided with under casting die (230) in placing bench top, and casting die one end is fixed at regulating part (220) top down, and regulating part (220) are installed in placing bench both sides, place bench (120) including bottom plate (121) and place piece (122), place piece (122) and be provided with three at least and be organized, all place piece (122) and equally divide and install on bottom plate (121), and the space that places that the casting die of both sides, top and bottom encloses constitutes the space that holds the tower section of thick bamboo.

2. The wind power tower welding stent of claim 1, wherein: four extrusion parts (210) are arranged in one row, each two extrusion parts comprise an L-shaped limiting plate (211), a threaded connecting rod (212) and a push plate (213), a transverse bar-shaped hole is formed in the bottom plate of the L-shaped limiting plate, an I-shaped limiting slide block is arranged at the bottom of the push plate, the I-shaped limiting slide block penetrates through the transverse bar-shaped hole to be in sliding connection with the bottom of the L-shaped limiting plate, and the side wall of the push plate is arranged on the side plate of the L-shaped limiting plate through the threaded connecting rod (212); the bottom plate (121) is provided with a vertical bar-shaped hole, the direction of the vertical bar-shaped hole is parallel to the axial direction of the tower, the bottom of the L-shaped limiting plate is provided with an L-shaped limiting slide block, the L-shaped limiting slide block is inserted into the vertical bar-shaped hole, a rear limiting bolt (216) is fastened, and the L-shaped limiting plate, the I-shaped limiting slide block, the threaded connecting rod, the transverse bar-shaped hole, the L-shaped limiting slide block and the vertical bar-shaped hole are mutually matched to form an adjustable device of the limiting mechanism.

3. The wind power tower welding stent of claim 2, wherein: a rubber pad (214) is arranged on one side surface, far away from the threaded connecting rod, of the push plate (213), and a rubber anti-slip pad is fixedly arranged at the bottom of the limit bolt (216).

4. The wind power tower welding stent of claim 2, wherein: the threaded connecting rod end is provided with a turning handle (215).

5. The wind power tower welding stent of claim 1, wherein: the top of placing piece (122) is sunken setting, the bottom symmetry of placing piece (122) is provided with two "L" shape spacing sliders, spacing spout has been seted up to the surface of bottom plate (121) and the L shape spacing slider department that corresponds of placing piece (122), place the top of piece (122) through spacing slidable mounting of L shape spacing slider in bottom plate (121), the both ends fixedly connected with screw ear of placing piece (122), a plurality of screw holes have evenly been seted up on the bottom plate (121) and the position of placing piece (122) both sides, the screw ear of placing the both ends of piece (122) passes through fastening bolt (123) fixed connection in the screw hole at bottom plate (121) top.

6. The wind power tower welding stent of claim 1, wherein: the adjusting piece (220) is provided with three groups, one group of adjusting piece (220) is positioned on one side of the placing table, the other two groups of adjusting piece (220) are positioned on the other side of the placing table (120), the adjusting piece (220) comprises a screw rod (222) and a supporting column (223), when one group of adjusting piece (220) is arranged on one side of the placing table, one end of the screw rod (222) is connected with a rotating shaft of a motor, the other end of the screw rod is rotatably connected with a first bearing seat (224), the motor and the first bearing seat are arranged on the side wall of the bottom plate, the supporting column (223) is in transmission connection with the screw rod (222) through screw rod nuts, the bottom side surface of the supporting column (223) is in limit sliding connection with the side wall of the bottom plate (121), the top of the supporting column (223) is fixedly connected with a first hydraulic cylinder (225), the first hold-down piece (230) is fixedly connected with the telescopic end of the first hydraulic cylinder (225), and the bottom surface of the first hold-down piece is an arc-shaped surface. When two groups of adjusting parts (220) are arranged on the other side of the placing table, a first bearing and a second bearing are respectively arranged at two ends of a screw rod (222), the first bearing and the second bearing are respectively arranged on the first bearing seat and the second bearing seat, the first bearing seat (224) and the second bearing seat (221) are respectively fixed at two ends of the side wall of the bottom plate, the middle part of the screw rod (222) is arranged in the middle of the side wall of the bottom plate through the bearings, support columns (223) are sleeved outside the two sides of the screw rod (222) and are in transmission connection with the screw rod (222) through screw rod nuts, the bottom side of the support columns (223) is in limit sliding connection with the side wall of the bottom plate (121), the tops of the two support columns are respectively fixedly connected with a second hydraulic cylinder and a third hydraulic cylinder, the second hold-down part (231) and the third hold-down part (232) are respectively fixedly connected with the telescopic ends of the second hydraulic cylinder and the third hydraulic cylinder, and the bottom surface of the hold-down part is an arc surface.

7. The wind power tower welding stent of claim 6, wherein: the side surface of the bottom of the supporting column (223) and the side wall of the bottom plate (121) are respectively provided with a sliding column and a sliding groove, and the sliding column is matched with the sliding groove.