CN211661427U - Special mould for assembling tower foot of iron tower - Google Patents

Abstract

The utility model discloses an iron tower column foot assembly special mould, including column foot base fixed plate, be provided with on the column foot base fixed plate and be used for carrying out the column foot bottom plate locating component who fixes a position to the column foot bottom plate, the outside of column foot base fixed plate is provided with the adjustable column foot riser assembling mould of three dimensions that the multiunit is used for centre gripping column foot riser and advances line location to the column foot riser, the utility model is simple in operation, only need 1 people alright accomplish the assembly of a plurality of column feet, node fast, have high reliability, nearly no trouble, safe and reliable, do not have any wastes material emission such as solid, liquid, gas that can cause environmental pollution, can realize manpower resources's the biggest saving to reduce assembly workman, welding workman's intensity of labour by a wide margin.

Description

Special mould for assembling tower foot of iron tower

Technical Field

The utility model relates to an assembly jig, specific theory relates to an assembly precision is high, assembly efficiency is high, can satisfy artifical and automatic welding equipment welded iron tower column foot assembly special mould simultaneously, belongs to welding die equipment technical field.

Background

The tower foot of the iron tower is an important supporting component in the iron tower, and the structural stability of the iron tower directly determines the structural stability of the iron tower, so that the assembly quality of the iron tower is very important.

The traditional integral structure of the tower foot of the power transmission and transformation line iron tower comprises a tower foot bottom plate and three tower foot vertical plates, the existing method for assembling the tower foot of the iron tower mostly adopts a manual assembly mode, tools such as a steel plate ruler, an angle ruler and the like are used for singly marking an assembly line on the tower foot bottom plate, and then other plates are positioned, assembled and fixed by spot welding according to marking lines, so that the assembly error of the tower feet with the same model and different models is large when the tower foot is assembled by adopting the assembly mode, only the manual welding mode can be adopted, and the mass welding requirement of automatic welding equipment cannot be met; when each group of tower legs are assembled, the assembly lines need to be drawn again, so that the assembly efficiency is low, and two persons need to finish the assembly together.

In order to solve the problems, some tower foot welding positioning tools appear on the market, and the tool is as follows: 201621150232.6's angle steel tower foot welding frock, comprising a base plate, be provided with four non-intersect risers on the bottom plate, four risers intersect at the one point and the contained angle of two adjacent center extension lines to bottom plate center extension line is the right angle, the equal parallel arrangement in every riser one side has movable clamp plate, leave tower foot steel sheet centre gripping clearance between movable clamp plate and the riser, be fixed with the limiting plate on the bottom plate in the movable clamp plate outside, guide bar and threaded connection have the screw rod to the activity has been worn on the limiting plate, guide bar and screw rod are parallel to each other, the terminal and movable clamp plate fixed connection of guide bar, the screw rod is terminal to be connected with movable clamp plate rotation.

As patent numbers: 201621150228. X's angle steel tower foot accurate assembly framework includes the bottom plate, and the bottom plate upper berth is equipped with four non-intersect guide rails, and the extension line that four guide rails extend to the bottom plate center intersects at a point and the contained angle of two adjacent extension lines is the right angle, all is provided with on every guide rail and follows the gliding riser of guide rail, and the left and right sides facade of riser all sets up to the tower foot steel sheet laminating plane that is on a parallel with the guide rail, all embeds the magnetic base that has the twist grip in every riser.

As patent numbers: 201720473699.2A positioning die for fixing the welding angle of a tower foot plate and a main material comprises a tower foot plate fixing plate and a main material fixing angle steel which is obliquely arranged on the tower foot plate fixing plate and used for fixing the main material, wherein the outer side of the main material fixing angle steel is fixedly provided with a first stiffening plate and a second stiffening plate; the tower foot plate fixing plate is provided with bolt fixing holes, the first stiffening plate and the second stiffening plate are in contact with two outer side faces of the main material fixing angle steel, the inner side face of the main material fixing angle steel is in contact connection with the outer side face of the main material, and connecting holes corresponding to the holes in the main material are formed in the two faces of the main material fixing angle steel.

Although the welding tool for the tower foot of the iron tower can improve the assembly efficiency of the tower foot, the assembly angle of a workpiece cannot be freely adjusted, and the assembly quality and the assembly efficiency of the tower feet of different types cannot be fundamentally solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved main technical problem of the utility model is to provide an assembly precision is high, assembly efficiency is high, can satisfy artifical and automatic welding equipment welded iron tower column foot assembly special mould simultaneously.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides an iron tower column foot assembly special mould, includes column foot base fixed plate, is provided with the column foot bottom plate locating component who is used for advancing line location to the column foot bottom plate on the column foot base fixed plate, and the outside of column foot base fixed plate is provided with the adjustable column foot riser assembling mould of three dimensions that the multiunit is used for centre gripping column foot riser and advances line location to the column foot riser.

The following is the utility model discloses to above-mentioned technical scheme's further optimization:

the integral structure of the tower foot base fixing plate is rectangular, and a sliding groove is obliquely formed in the upper end face of the tower foot base fixing plate.

Further optimization: the tower foot bottom plate positioning assembly comprises a tower foot bottom plate main positioning piece fixedly arranged above the tower foot base fixing plate and close to an included angle of the tower foot base fixing plate, and a tower foot bottom plate auxiliary positioning piece is arranged in the sliding groove in a sliding mode.

Further optimization: the tower foot bottom plate main positioning piece comprises a fixing piece fixedly arranged above the tower foot base fixing plate, and a second positioning piece is sleeved on the fixing piece.

Further optimization: the auxiliary positioning part of the tower foot bottom plate comprises a sliding positioning part which is arranged on the sliding groove in a sliding mode, and a first positioning part is sleeved on the sliding positioning part.

Further optimization: adjustable tower foot riser rigging die of three-dimensional includes the bed plate, and the top of bed plate is provided with the mounting panel, and the front side fixedly connected with of mounting panel is used for the centre gripping to treat the centre gripping subassembly of welding tower foot riser, and the top of bed plate is provided with and is used for supporting the mounting panel to carry out the position removal subassembly of diversified removal.

Further optimization: the azimuth moving assembly comprises sliding plates which are arranged above the base plate in parallel, and a longitudinal sliding assembly which is used for supporting the sliding plates to slide longitudinally is fixedly arranged on the base plate.

Further optimization: the sliding plate is fixedly provided with a fixed vertical plate at a position close to the front end, the fixed vertical plate is provided with a rotating assembly, and the fixed vertical plate is connected with the mounting plate through the rotating assembly.

Further optimization: the rotating assembly comprises a rotating shaft which is rotatably arranged on the fixed vertical plate, and one end of the rotating shaft, which is close to the mounting plate, is fixedly connected with the mounting plate.

Further optimization: the clamping assembly comprises two tower foot vertical plate clamping pieces fixedly arranged on the front end face of the mounting plate, the two tower foot vertical plate clamping pieces are arranged in parallel, and a clamping cavity is formed between the two tower foot vertical plate clamping pieces.

The above technical scheme is adopted in the utility model, when using, at first according to waiting to assemble the distance between two sets of locating holes that set up along the diagonal on the tower foot bottom plate of iron tower foot and set for the distance between tower foot bottom plate auxiliary positioning piece and the main setting element of tower foot bottom plate on the tower foot bottom plate of tower foot base fixed plate.

And then aligning the two groups of positioning holes arranged on the tower foot bottom plate with the tower foot bottom plate auxiliary positioning piece and the tower foot bottom plate main positioning piece to realize positioning and placement of the tower foot bottom plate through the tower foot bottom plate auxiliary positioning piece and the tower foot bottom plate main positioning piece.

And then installing three tower foot vertical plates to be assembled on a corresponding three-dimensional adjustable tower foot vertical plate assembling die, adjusting the positions of the tower foot vertical plates by an azimuth moving assembly according to the assembling positions, and welding the assembled tower foot bottom plate and the assembled tower foot vertical plates after the adjustment is finished to manufacture the tower foot of the iron tower.

And then the tower foot vertical plate clamping piece is loosened to enable the tower foot vertical plate to be separated from the clamping cavity, so that the assembled tower foot of the iron tower can be lifted away from the mold, and the assembling process is completed.

The above technical scheme is adopted in the utility model, think about ingenious, rational in infrastructure, adopted the three-dimensional positioning assembly mould design technology that point, face combine, all parts all adopt high accuracy numerical control machining center machining technology, have guaranteed that the whole precision of spare part satisfies welding robot demand completely. The influence of size errors in the blanking and machining processes of tower legs and joints on assembly is overcome, the selection of the whole datum of a workpiece creatively adopts the technology of positioning the main hole, the auxiliary hole and the surface of the bottom plate, the large error caused by manual material marking and drilling of the bottom plate is overcome, and the uniformity and the accuracy of the datum are ensured.

To the assembly of riser the utility model discloses an in the design adopted plane location technology, because this mould can realize around, side-to-side movement and riser mounting can follow the center pin and rotate wantonly, can accomplish the accurate positioning to all angle tower feet, node riser like this, the work piece error that makes it assembly accomplish can satisfy welding robot demand completely.

Because the design theory of ergonomics has fully been considered, the utility model is simple in operation, only need 1 people alright accomplish the assembly of a plurality of tower feet, node fast, need not to carry out necessary measurement in the original assembly, draw line etc. consuming time, hard work. Can practice thrift assembly personnel 50%, and need not professional assembly personnel, arbitrary personnel simply learn can.

Owing to adopt the wear-resisting guiding mechanism of high accuracy, the utility model discloses have high reliability, few trouble, safe and reliable do not have any wastes material emissions such as solid, liquid, the gas that can cause environmental pollution.

Through adopting the utility model discloses, can realize manpower resources's the biggest saving, can reduce assembly workman, welding worker by a wide margin, can reduce about 80% at most.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a top view of the special mold for assembling the tower leg of the iron tower in the embodiment of the present invention;

FIG. 4 is a top view of an auxiliary positioning member for a tower foot bottom plate in an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a top view of the tower foot bottom plate main positioning member in the embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line B- -B of FIG. 6;

fig. 8 is a schematic structural view of an assembly mold for a three-dimensional adjustable tower foot vertical plate in the embodiment of the present invention;

fig. 9 is a top view of fig. 8.

In the figure: 1-tower foot base fixing plate; 2-tower foot bottom plate auxiliary positioning piece; 3-a tower foot bottom plate main positioning piece; 4-tower foot bottom plate; 5-a tower foot vertical plate; 6-a three-dimensional adjustable tower foot vertical plate assembling die; 7-tower foot vertical plate clamping piece; 8-base plate; 9-a sliding plate; 10-a guide rail; 11-a rail slide; 12-fixing the vertical plate; 13-a fixing member; 14-a first positioning member; 15-a first compression bolt; 16-a sliding locator; 17-a second positioning element; 18-a second compression bolt; 19-mounting a plate; 20-a chute; 21-a rotating shaft; 22-a strip through groove; 23-bolt fasteners.

Detailed Description

Example (b): as shown in fig. 1-3, a special mold for assembling tower legs of an iron tower comprises a tower leg base fixing plate 1, wherein a tower leg base plate positioning assembly for positioning a tower leg base plate 4 is arranged on the tower leg base fixing plate 1, and a plurality of groups of three-dimensional adjustable tower leg vertical plate assembling molds 6 for clamping a tower leg vertical plate 5 and positioning the tower leg vertical plate 5 are arranged on the outer side of the tower leg base fixing plate 1.

The overall structure of the tower foot base fixing plate 1 is rectangular, and a sliding groove 20 is obliquely formed in the upper end face of the tower foot base fixing plate 1.

The tower foot bottom plate positioning assembly comprises a tower foot bottom plate main positioning piece 3 which is fixedly arranged above a tower foot base fixing plate 1 and close to an included angle of the tower foot base fixing plate 1, and a tower foot bottom plate auxiliary positioning piece 2 is arranged in the sliding groove 20 in a sliding mode.

The main positioning part 3 of the tower foot bottom plate comprises a fixing part 13 fixedly arranged above the tower foot base fixing plate 1 and close to an included angle of the tower foot base fixing plate 1, and a second positioning part 17 is sleeved on the fixing part 13.

The integral structure of the second positioning part 17 is in a cone frustum shape, and the bottom of the second positioning part 17 is in contact with the tower foot base fixing plate 1.

By the design, the positioning hole on the tower foot bottom plate 4 to be assembled and welded can be placed on the second positioning part 17 and automatically centered on the positioning hole through the conical table surface of the second positioning part 17, and then the tower foot bottom plate 4 is positioned and placed above the tower foot base fixing plate 1.

A threaded hole is formed in the center of the fixing member 13, a second pressing bolt 18 is connected to the fixing member 13 through the threaded hole, and the second pressing bolt 18 is used for fixedly mounting the second positioning member 17 on the fixing member 13.

A washer is sleeved on the second pressing bolt 18, and the second pressing bolt 18 is in contact with the second positioning part 17 through the washer.

By the design, the second positioning part 17 can be fixedly arranged on the fixing part 13 through the second compression bolt 18, the installation effect can be improved through the gasket, and the second compression bolt 18 is prevented from loosening after long-time use.

The tower foot bottom plate auxiliary positioning part 2 comprises a sliding positioning part 16 arranged on the sliding groove 20 in a sliding mode, and a first positioning part 14 is sleeved on the sliding positioning part 16.

The integral structure of the first positioning piece 14 is in a cone frustum shape, and the bottom of the first positioning piece 14 is in contact with the tower foot base fixing plate 1.

By the design, the positioning hole on the tower foot bottom plate 4 to be assembled and welded can be placed on the second positioning part 17 and automatically centered by the conical table surface of the second positioning part 17, and then another positioning hole of the tower foot bottom plate 4 is placed on the first positioning part 14 and automatically centered by the conical table surface of the first positioning part 14, so that the tower foot bottom plate 4 is positioned and placed above the tower foot base fixing plate 1.

And the diameters of the two positioning holes on the tower foot bottom plate 4 are the same, and the overall structures and the sizes of the first positioning piece 14 and the second positioning piece 17 are also the same, so that when the tower foot bottom plate 4 is placed on the first positioning piece 14 and the second positioning piece 17 through the positioning holes, the upper end face of the tower foot bottom plate 4 can be ensured to be a horizontal plane, and the use is convenient.

And the sliding positioning piece 16 and the sliding chute 20 are installed in a sliding manner, so that the sliding positioning piece 16 can slide along the sliding chute 20, and the sliding positioning piece 16 can drive the first positioning piece 14 to move when sliding along the sliding chute 20, so that the space and the position between the first positioning piece 14 and the second positioning piece 17 can be changed, and the positioning assembly device can be suitable for positioning and assembling iron tower legs of iron towers of various models.

A threaded hole is formed in the center of the sliding positioning part 16, a first pressing bolt 15 is connected to the sliding positioning part 16 through the threaded hole in a threaded manner, and the first pressing bolt 15 is used for fixedly mounting the first positioning part 14 on the fixing part 13.

The first compression bolt 15 is sleeved with a gasket, and the first compression bolt 15 is in contact with the first positioning piece 14 through the gasket.

By means of the design, the first positioning piece 14 can be fixedly installed on the fixing piece 13 through the first compression bolt 15, the installation effect can be improved through the gasket, and the first compression bolt 15 is prevented from loosening due to long-time use.

The number of the three-dimensional adjustable tower foot vertical plate assembling dies 6 is set according to the tower foot vertical plates 5 of the tower feet of the iron tower to be welded, in the implementation, the number of the tower foot vertical plates 5 of the tower feet of the iron tower is three, and then the 3 three-dimensional adjustable tower foot vertical plate assembling dies 6 are needed to be adopted for respectively clamping and positioning the tower foot vertical plates 5, and the 3 three-dimensional adjustable tower foot vertical plate assembling dies 6 are respectively arranged on the front side and the rear side of the tower foot base fixing plate 1 and on one side close to the main positioning part 3 of the tower foot base plate.

The three-dimensional adjustable tower foot vertical plate assembling die 6 comprises a base plate 8, a mounting plate 19 is arranged above the base plate 8, a clamping component used for clamping the tower foot vertical plate 5 to be welded is fixedly connected to the front side of the mounting plate 19, and a position moving component used for supporting the mounting plate 19 to move in multiple directions is arranged above the base plate 8.

By the design, the clamping assembly can be used for clamping the tower foot vertical plate 5 to be welded, and the azimuth moving assembly supporting and mounting plate 19 can move in multiple directions to drive the tower foot vertical plate 5 to move in multiple directions so as to position the tower foot vertical plate 5.

The first positioning piece 14 and the second positioning piece 17 are respectively installed on the first positioning piece 14 and the second positioning piece 17 through a first compression bolt 15 and a second compression bolt 18, and then the first positioning piece 14 and the second positioning piece 17 can be replaced according to the diameter of the positioning holes in the tower foot bottom plate 4, so that the welding device can be suitable for welding iron tower feet of various models.

The azimuth moving assembly comprises a sliding plate 9 arranged above a base plate 8 in parallel, and a longitudinal sliding assembly used for supporting the sliding plate 9 to slide longitudinally is fixedly arranged on the base plate 8.

The longitudinal sliding assembly comprises two guide rails 10 which are fixedly installed above the base plate 8 and distributed along the length direction of the base plate 8, a plurality of guide rail sliding blocks 11 are connected to the guide rails 10 in a sliding mode, and the upper ends of the guide rail sliding blocks 11 are fixedly connected with the sliding plate 9.

By means of the design, the guide rail sliding block 11 can slide along the guide rail 10 through the sliding connection between the guide rail sliding block 11 and the guide rail 10, and further the guide rail 10 and the guide rail sliding block 11 can support and support the sliding plate 9 to slide longitudinally.

A fixed vertical plate 12 is fixedly arranged on the sliding plate 9 at a position close to the front end, the fixed vertical plate 12 is vertically arranged with the sliding plate 9, a rotating component is arranged on the fixed vertical plate 12 at a position close to the middle part, and the fixed vertical plate 12 is connected with a mounting plate 19 through the rotating component.

The rotating assembly comprises a rotating shaft 21 which is rotatably arranged on the fixed vertical plate 12, and one end of the rotating shaft 21, which is close to the mounting plate 19, is fixedly connected with the mounting plate 19.

Design like this, rotate with fixed riser 12 through pivot 21 and be connected to pivot 21 and mounting panel 19 fixed connection, and then accessible pivot 21 supports mounting panel 19 and rotates, realizes driving the tower footing riser 5 of centre gripping on the centre gripping subassembly and rotates and change whole circumferential position.

One end of the rotating shaft 21, which is far away from the mounting plate 19, penetrates through the rear side face of the fixed vertical plate 12 and is integrally connected with a threaded rod, and a nut fastener is connected to the threaded rod in a threaded manner.

Design like this, the accessible rotates the nut fastener, makes the nut fastener remove and is close to fixed riser 12, and then can make the threaded rod drive mounting panel 19 through pivot 21 when continuing to rotate the nut fastener and be close to fixed riser 12 to make mounting panel 19 be face and face contact with fixed riser 12, improve frictional force, realize fixing mounting panel 19's circumferential position.

The rotating shaft 21 can be rotatably connected with the fixed vertical plate 12 through a bearing, a mounting hole for mounting the bearing is formed in the fixed vertical plate 12, the outer ring of the bearing is fixedly connected with the outer surface of the mounting hole in the fixed vertical plate 12, and the inner ring of the bearing is slidably connected with the outer surface of the rotating shaft 21 through a key and a key slot.

The key is fixedly arranged on the rotating shaft 21, and the key groove is formed in the inner ring of the bearing.

The design is that the rotating shaft 21 is connected with the fixed vertical plate 12 in a rotating way through the bearing seat, and the rotating effect of the mounting plate 19 can be improved through the bearing seat.

A plurality of reinforcing plates are fixedly arranged between the rear part of the fixed vertical plate 12 and the sliding plate 9, and the reinforcing plates are used for improving the overall strength of the fixed vertical plate 12.

And the base plate 8 is provided with an installation adjusting component for installing the whole body and adjusting the transverse position of the whole body.

Installation adjustment subassembly is including seting up the rectangular logical groove 22 that is close to both ends position department on bed plate 8, two rectangular axes that lead to groove 22 are the symmetry and lay, install bolt fastening 23 in the rectangular logical groove 22 respectively.

The bolt fastener 23 pre-embeds the bottom bolt fastener, the base plate 8 can be fixedly installed on the ground through the bolt fastener 23, the transverse position of the base plate 8 can be adjusted through the strip through groove 22 after the bolt fastener 23 is loosened, and then the whole three-dimensional adjustable tower footing plate assembling die 6 is driven to adjust the transverse position.

The clamping assembly comprises two tower foot vertical plate clamping pieces 7 fixedly arranged on the front end face of the mounting plate 19, the two tower foot vertical plate clamping pieces 7 are arranged in parallel, and a clamping cavity is formed between the two tower foot vertical plate clamping pieces 7.

The tower foot vertical plate 5 can be placed in the clamping cavity, and the tower foot vertical plate 5 is fixed in the clamping cavity through the two tower foot vertical plate clamping pieces 7.

And the tower foot vertical plate clamping piece 7 is provided with a clamping component for fixing the tower foot vertical plate 5 in the clamping cavity.

The clamping assembly comprises a plurality of threaded holes formed in the tower foot vertical plate clamping piece 7, bolts are connected in the threaded holes in a bolted mode, one end of each bolt can penetrate through the threaded hole to stretch into the clamping cavity and abut against the tower foot vertical plate 5 in the clamping cavity, and the tower foot vertical plate 5 is restrained in the clamping cavity.

When the positioning device is used, the distance between the tower foot bottom plate auxiliary positioning piece 2 and the tower foot bottom plate main positioning piece 3 on the tower foot base fixing plate 1 is set according to the distance between two groups of positioning holes arranged along the diagonal line on the tower foot bottom plate 4 of the iron tower to be assembled.

Then, two groups of positioning holes arranged on the tower foot bottom plate 4 are aligned with the tower foot bottom plate auxiliary positioning piece 2 and the tower foot bottom plate main positioning piece 3, so that the tower foot bottom plate 4 is positioned and placed through the tower foot bottom plate auxiliary positioning piece 2 and the tower foot bottom plate main positioning piece 3.

And then installing three tower foot vertical plates 5 to be assembled on corresponding three-dimensional adjustable tower foot vertical plate assembling dies 6, adjusting the positions of the tower foot vertical plates 5 by using the azimuth moving assembly according to the assembling positions, and welding the assembled tower foot bottom plate 4 and the assembled tower foot vertical plates 5 after the adjustment is finished to manufacture the tower foot of the iron tower.

And then the tower foot vertical plate clamping piece 7 is loosened to enable the tower foot vertical plate 5 to be separated from the clamping cavity, so that the assembled tower foot of the iron tower can be lifted off the mold, and the assembling process is completed.

For those skilled in the art, based on the teachings of the present invention, changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims (10)

1. The utility model provides an iron tower column foot assembly special mould, includes column foot base fixed plate (1), its characterized in that: the tower foot base fixing plate (1) is provided with a tower foot base plate positioning assembly used for positioning the tower foot base plate (4), and the outer side of the tower foot base fixing plate (1) is provided with a plurality of groups of three-dimensional adjustable tower foot vertical plate assembling dies (6) used for clamping the tower foot vertical plate (5) and positioning the tower foot vertical plate (5).

2. The special mold for assembling the tower foot of the iron tower according to claim 1, wherein: the overall structure of the tower foot base fixing plate (1) is rectangular, and a sliding groove (20) is obliquely formed in the upper end face of the tower foot base fixing plate (1).

3. The special mold for assembling the tower foot of the iron tower as claimed in claim 2, wherein: the tower foot bottom plate positioning assembly comprises a tower foot bottom plate main positioning piece (3) fixedly arranged above the tower foot base fixing plate (1) and close to an included angle of the tower foot base fixing plate (1), and a tower foot bottom plate auxiliary positioning piece (2) is arranged in the sliding groove (20) in a sliding mode.

4. The special mold for assembling the tower foot of the iron tower according to claim 3, wherein: the tower foot bottom plate main positioning piece (3) comprises a fixing piece (13) fixedly arranged above the tower foot base fixing plate (1), and a second positioning piece (17) is sleeved on the fixing piece (13).

5. The special mold for assembling the tower foot of the iron tower as claimed in claim 4, wherein: the auxiliary positioning part (2) of the tower foot bottom plate comprises a sliding positioning part (16) which is arranged on the sliding groove (20) in a sliding mode, and a first positioning part (14) is sleeved on the sliding positioning part (16).

6. The special mold for assembling the tower foot of the iron tower as claimed in claim 5, wherein: adjustable tower footing riser rigging die of three-dimensional (6) includes bed plate (8), and the top of bed plate (8) is provided with mounting panel (19), and the front side fixedly connected with of mounting panel (19) is used for the centre gripping to treat the centre gripping subassembly of welding tower footing riser (5), and the top of bed plate (8) is provided with and is used for supporting that mounting panel (19) carry out the position removal subassembly of diversified removal.

7. The special mold for assembling the tower foot of the iron tower as claimed in claim 6, wherein: the azimuth moving assembly comprises sliding plates (9) which are arranged above the base plate (8) in parallel, and a longitudinal sliding assembly which is used for supporting the sliding plates (9) to slide longitudinally is fixedly arranged on the base plate (8).

8. The special mold for assembling the tower foot of the iron tower according to claim 7, wherein: a fixed vertical plate (12) is fixedly arranged on the sliding plate (9) close to the front end, a rotating assembly is arranged on the fixed vertical plate (12), and the fixed vertical plate (12) is connected with the mounting plate (19) through the rotating assembly.

9. The special mold for assembling the tower foot of the iron tower according to claim 8, wherein: the rotating assembly comprises a rotating shaft (21) which is rotatably arranged on the fixed vertical plate (12), and one end, close to the mounting plate (19), of the rotating shaft (21) is fixedly connected with the mounting plate (19).

10. The special mold for assembling the tower foot of the iron tower according to claim 9, wherein: the clamping assembly comprises two tower foot vertical plate clamping pieces (7) fixedly arranged on the front end face of the mounting plate (19), the two tower foot vertical plate clamping pieces (7) are arranged in parallel, and a clamping cavity is formed between the two tower foot vertical plate clamping pieces (7).

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