CN219900804U - Tower section positioning and clamping tool - Google Patents

Abstract

The utility model provides a tower section positioning and clamping tool, which comprises the following components: the two mounting frames are oppositely arranged and enclose a rivet welding space for accommodating the tower body, and each mounting frame comprises a bracket and a frame rotatably arranged on the bracket; the main chord positioning mechanism is arranged on one of the frames and comprises an end surface reference block and a main chord connecting seat, the end surface reference block is used for being in contact positioning with the end surface of the main chord, and the main chord connecting seat is used for being connected with the end of the main chord; the fish tail clamping mechanism is arranged on the other frame and comprises an extension shaft, an outer limiting block and an inner compression block, wherein the outer limiting block and the inner compression block are connected with the extension shaft, the extension shaft can stretch out and draw back relative to the rivet welding space, and the outer limiting block and the inner compression block are used for clamping the fish tail inside and outside. The utility model can simultaneously meet the demands of riveting and welding procedures of tower sections of different types, reduces lifting and overturning steps in the welding procedure, saves the manufacturing working hours of structural members, can realize rotary welding, can realize flat welding of all welding seams, and can greatly improve the welding quality.

Description

Tower section positioning and clamping tool

Technical Field

The utility model belongs to the technical field of welding, and particularly relates to a tower section positioning and clamping tool.

Background

At present, the tower body of the tower crane is usually formed by connecting a transition joint and a standard joint, the transition joint and the standard joint are required to be assembled before welding, four main chords of the transition joint and the standard joint are fixed through a tool, and then middle web members are assembled. The method comprises the steps of riveting all parts together according to the rivet welding of a transition joint and a standard joint with a main chord member of a fishplate, wherein the size requirement is high, the riveting is troublesome, the tool is lifted after all the parts are riveted, and the tool is required to be lifted and turned over for multiple times to carry out flat welding; lower frock welding, in order to guarantee the quality need school fire correction, the manufacturing time is more, influence efficiency, and rivet welding process is separately, can increase the preparation man-hour, needs bigger welding place, because not having to fix a position each joint and hole in the welding process in addition, makes overall dimension unable accurate assurance because of welding shrink easily.

Disclosure of Invention

The utility model mainly aims to provide a tower section positioning and clamping tool, and aims to solve the technical problems of low riveting and welding efficiency and poor quality of a tower section of a tower crane in the prior art.

In order to achieve the above object, the present utility model provides a tower section positioning and clamping fixture, the tower section including a main chord having a main chord end and a fish tail end, the tower section positioning and clamping fixture comprising: the two mounting frames are oppositely arranged and enclose a rivet welding space for accommodating the tower section, and each mounting frame comprises a bracket and a frame rotatably arranged on the bracket; the main chord positioning mechanism is arranged on one of the frames and comprises an end surface reference block and a main chord connecting seat, wherein the end surface reference block is used for being in contact positioning with the end surface of the main chord, and the main chord connecting seat is used for being connected with the main chord end; the fish tail clamping mechanism is arranged on the other frame and comprises an extension shaft, an outer limiting block and an inner pressing block, wherein the outer limiting block and the inner pressing block are connected with the extension shaft, the extension shaft can stretch and retract relative to the rivet welding space, and the outer limiting block and the inner pressing block are used for clamping the fish tail inside and outside.

In the embodiment of the utility model, the main string positioning mechanism further comprises a positioning shaft sleeve arranged on the main string connecting seat, and the positioning shaft sleeve is used for being connected with the main string end through a positioning pin shaft.

In the embodiment of the utility model, the number of the positioning shaft sleeves is multiple, and the central lines of any two adjacent positioning shaft sleeves are mutually perpendicular.

In an embodiment of the present utility model, the plurality of positioning bushings includes a full circle bushing and a half circle bushing with an opening.

In an embodiment of the present utility model, the fish tail clamping mechanism further includes: the threaded end cover is arranged on the frame and internally provided with a trapezoid threaded hole; the rotating assembly comprises a rotating wheel and a threaded shaft connected with the rotating wheel, and the threaded shaft is in threaded fit with the trapezoid threaded hole; the screw thread shaft is provided with a stepped groove for the extension shaft to extend in, the snap ring is arranged in the stepped groove and is arranged outside the extension shaft in a surrounding mode, and the snap ring is in clearance fit with the extension shaft and limits the extension shaft along the extension direction of the extension shaft.

In the embodiment of the utility model, the fish tail clamping mechanism further comprises a guide end cover, wherein the guide end cover is arranged on one side of the frame facing the rivet welding space, the threaded end cover is arranged on one side of the frame facing away from the rivet welding space, and the extending shaft penetrates through the guide end cover and is in guide fit with the guide end cover through a guide key.

In an embodiment of the present utility model, the fish tail clamping mechanism further includes: the outer limiting block and the inner pressing block are both arranged on the positioning seat, the section size of the positioning seat is larger than that of the extending shaft, and the positioning seat is provided with a connecting hole for the extending shaft to extend in; the fastening ring is clamped in the connecting hole, sleeved outside the extending shaft and used for fastening and connecting the extending shaft with the positioning seat.

In the embodiment of the utility model, the inner pressing block can rotate relative to the extending shaft, and the inner pressing block is provided with an arc-shaped pressing surface.

In the embodiment of the utility model, the end surface reference block comprises a first positioning plate and a second positioning plate which are mutually perpendicular, and the first positioning plate and the second positioning plate are both provided with positioning surfaces for contacting with the end surface of the main chord; and/or, the mounting frame further comprises a bearing seat arranged at the top of the bracket, and the frame is hinged with the bearing seat through a rotating shaft.

In the embodiment of the utility model, the mounting frame further comprises a positioning sleeve and a fixed shaft, wherein a plurality of positioning sleeves are arranged on the frame at intervals around the rotation center of the frame, and the fixed shaft is used for extending into the positioning sleeve and limiting the frame relative to the bracket; and/or, the two frames are connected through at least two connecting shafts.

Through the technical scheme, the tower section positioning and clamping tool provided by the embodiment of the utility model has the following beneficial effects:

in the tower section riveting and welding process, an end surface reference block of the tower section positioning and clamping tool can be used for positioning the main chord end surface of the main chord, so that the contact area between the main chord positioning mechanism and the main chord is ensured, the positioning precision of the main chord positioning mechanism is improved, whether the main chord end is tightly attached to the end surface reference block or not can be directly observed after positioning, and the dimensional precision and the end surface flatness are ensured; the main chord connecting seat and the main chord end are adopted for preliminary positioning connection, the main chord member is fixed in a rivet welding space, then the extension shaft of the fish tail clamping mechanism can be adjusted, the extension shaft extends out relative to the rivet welding space and is close to the fish tail end of the main chord member, the outer limiting block is abutted against the outer end face of the fish tail end, meanwhile, the inner pressing block is abutted against the inner end face of the fish tail end, the outer limiting block and the inner pressing block are matched to form an inner and outer clamping structure for clamping the fish tail end, so that tower section riveting is carried out on the main chord member, and after the riveting procedure is finished, the rotatable frame rotates the tower section to a specified angle, so that a worker can conveniently carry out the welding procedure. The tower section positioning and clamping tool disclosed by the utility model can simultaneously meet the demands of riveting and welding procedures of tower sections of different types, the lifting and overturning steps in the welding procedure are reduced, the manufacturing time of structural parts is saved, the rotary welding can be realized, all welding seams can be welded flatly, the welding quality can be greatly improved, the fire correction is not needed after the welding, the fire correction time is reduced, the welding is performed on the tool, the welding deformation is reduced, and the size is more accurate; and the whole main chord end can ensure the flatness by tightly jacking the main chord end on the tool.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide an understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of a tower section positioning and clamping tool according to an embodiment of the present utility model from a single perspective;

FIG. 2 is a schematic view of a tower section positioning and clamping tool according to an embodiment of the present utility model in another view;

FIG. 3 is a schematic view of a frame structure on which a tower section positioning and clamping tool is mounted in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of a part of a tower section positioning and clamping tool according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a portion of a tower section positioning and clamping tool according to another embodiment of the present utility model;

fig. 6 is a schematic structural view of a fish tail clamping mechanism of a tower section positioning and clamping tool according to still another embodiment of the utility model.

Description of the reference numerals

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.

The tower section positioning and clamping fixture according to the utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, in the embodiment of the present utility model, the tower section 200 includes a main chord member 210 having a main chord end and a fish tail end, and the tower section positioning and clamping fixture 100 includes two mounting frames 1, a main chord positioning mechanism 3 and a fish tail clamping mechanism 4; the two mounting frames 1 are oppositely arranged and enclose a rivet welding space 2 for accommodating the tower section, and each mounting frame 1 comprises a bracket 11 and a frame 12 rotatably arranged on the bracket 11; the main string positioning mechanism 3 is mounted to one of the frames 12,

the main string positioning mechanism 3 comprises an end surface reference block 31 and a main string connecting seat 32, wherein the end surface reference block 31 is used for being in contact positioning with the end surface of the main string, and the main string connecting seat 32 is used for being connected with the end of the main string; the fish tail clamping mechanism 4 is mounted on the other frame 12, the fish tail clamping mechanism 4 comprises an extension shaft 41, an outer limiting block 42 and an inner pressing block 43 which are connected with the extension shaft 41, the extension shaft 41 can stretch and retract relative to the rivet welding space 2, and the outer limiting block 42 and the inner pressing block 43 are used for clamping the fish tail inside and outside.

It will be appreciated that the tower section 200 in this embodiment may be a standard section or a transition section, with the tail end of the main chord 210 provided with a fishplate. The bracket 11 extends in the up-down direction and comprises at least two supporting legs, the two mounting frames 1 are oppositely arranged in the left-right direction, the frame 12 is rectangular, and the rotation center line of the frame 12 is parallel to the ground. The main string positioning mechanism 3 and the fish tail clamping mechanism 4 are positioned at the corners of the frame 12. The tower section 200 in this embodiment is mainly used for a tower crane, and the tower section positioning and clamping tool 100 is used for positioning and clamping the main chord member 210 of the tower section 200 in the riveting and welding procedures of the tower section 200, and the end surface reference block 31 and the main chord connection seat 32 are detachably mounted on the frame 12 and can be replaced.

In the riveting and welding process of the tower section 200, the end surface reference block 31 of the tower section positioning and clamping tool 100 can be used for positioning the main chord end surface of the main chord 210 in a contact manner, so that the contact area between the main chord positioning mechanism 3 and the main chord 210 is ensured, the positioning precision of the main chord positioning mechanism 3 is improved, after positioning, whether the main chord end is tightly attached to the end surface reference block 31 can be directly observed, and the dimensional precision and the end surface flatness are ensured; the main chord connecting seat 32 and the main chord end are adopted for preliminary positioning connection, so that the main chord member 210 is fixed in the rivet welding space 2, then the extension shaft 41 of the fish tail clamping mechanism 4 can be adjusted, the extension shaft 41 extends out relative to the rivet welding space 2 and is close to the fish tail end of the main chord member 210 until the outer limiting block 42 abuts against the outer end face of the fish tail end, meanwhile, the inner pressing block 43 abuts against the inner end face of the fish tail end, and the outer limiting block 42 and the inner pressing block 43 are matched to form an inner and outer clamping structure for clamping the fish tail end, so that the main chord member 210 is riveted by the tower section 200, and after the riveting process is finished, the rotatable frame 12 rotates the tower section 200 to a specified angle, so that a worker can conveniently weld the fish tail end. The tower section positioning and clamping tool 100 in the embodiment can simultaneously meet the demands of riveting and welding procedures of the tower section 200, reduces lifting and overturning steps in the welding procedure, saves manufacturing time of structural members, can rotationally weld, can weld all welding seams flatly, can greatly improve welding quality, does not need to correct fire after welding, reduces fire correcting time, reduces welding deformation on the tool, and has more accurate size; and the whole main chord end can ensure the flatness by tightly jacking the main chord end on the tool.

Specifically, the main string positioning mechanism 3 further includes a positioning sleeve 33 disposed on the main string connecting seat 32, where the positioning sleeve 33 is used to connect with the main string end through a positioning pin. In this embodiment, the positioning shaft sleeve 33, the positioning pin shaft and the main string end are connected, so that the main string positioning mechanism 3 can be fixed to the main string end in a preliminary manner, and meanwhile, the main string positioning mechanism can be detached conveniently, and has a simple structure.

As shown in fig. 1, 2 and 5, the number of the positioning bosses 33 is plural, and the center lines of any adjacent two positioning bosses 33 are perpendicular to each other. In one embodiment, one of the positioning bosses 33 may extend in an axial direction, i.e., a horizontal direction, of the main chord 210, and the other positioning boss 33 may extend in an up-down direction, such that the two positioning bosses 33 radially and axially limit the main chord 210. The plurality of positioning bosses 33 includes a full circle boss and a half circle boss with an opening. The shaft sleeve of whole circle design cooperation half circle design, when can guaranteeing to fix a position accurately, the drawing of patterns of being convenient for.

In another embodiment, as shown in fig. 4 and 6, the fish tail clamping mechanism 4 further includes a threaded end cap 44, a swivel assembly 45, and a snap ring 46; the threaded end cover 44 is mounted on the frame 12, and a trapezoid threaded hole is formed in the threaded end cover 44; the rotating assembly 45 comprises a rotating wheel 451 and a threaded shaft 452 connected with the rotating wheel 451, and the threaded shaft 452 is in threaded fit with the trapezoid threaded hole; the clamping ring 46 and the threaded shaft 452 are provided with a step groove for the extension shaft 41 to extend in, the clamping ring 46 is arranged in the step groove and is annularly arranged outside the extension shaft 41, and the clamping ring 46 is in clearance fit with the extension shaft 41 and limits the extension shaft 41 along the extension direction of the extension shaft 41.

The snap ring 46 in this embodiment may be a split design of an upper half ring and a lower half ring, the protruding shaft 41 and the threaded shaft 452 are connected and matched by the snap ring 46 to form a segmented shaft design, trapezoidal threads are turned in a trapezoidal threaded hole in the threaded end cover 44 and matched with trapezoidal threads on the threaded shaft 452, when the rotating wheel 451 rotates, the threaded shaft 452 moves along the axial direction to achieve the effect of propping up and returning, the protruding shaft 41 and the threaded shaft 452 can keep the travelling route consistent, but a matching gap is formed between the snap ring 46 and the protruding shaft 41, so that the protruding shaft 41 does not rotate along with the threaded shaft 452, and the position of the main chord of 90 ° can be fixedly ensured. In addition, the threaded end cover 44 and the frame 12 in the embodiment are detachably connected, and the clamping ring 46 and the threaded end cover 44 are detachably connected, so that key positioning components of the tool are assembled and replaceable in abrasion, and a sustainable design is formed.

It should be noted that, the fish tail clamping mechanism 4 further includes a guide end cover 47, the guide end cover 47 is mounted on a side of the frame 12 facing the rivet welding space 2, the threaded end cover 44 is mounted on a side of the frame 12 facing away from the rivet welding space 2, and the protruding shaft 41 penetrates through the guide end cover 47 and is in guide fit with the guide end cover 47 through a guide key. The protruding shaft 41 in this embodiment may adopt a key slot design, and the guiding end cover 47 is internally provided with a composite bushing, so that the protruding shaft 41 and the composite bushing are guided by the guiding key to move backward along the horizontal direction, and the accuracy of the running track of the protruding shaft 41 is improved.

In the embodiment of the utility model, the fish tail clamping mechanism 4 further comprises a positioning seat 48 and a fastening ring 49; the outer limiting block 42 and the inner compression block 43 are both arranged on the positioning seat 48, the section size of the positioning seat 48 is larger than that of the extension shaft 41, and the positioning seat 48 is provided with a connecting hole for the extension shaft 41 to extend in; the fastening ring 49 is clamped in the connecting hole, and the fastening ring 49 is sleeved outside the extension shaft 41 and is used for fastening and connecting the extension shaft 41 and the positioning seat 48.

In this embodiment, by providing the fastening ring 49 between the projecting shaft 41 and the positioning seat 48, the coaxiality between the positioning seat 48 and the projecting shaft 41 can be improved, and the projecting shaft 41 and the positioning seat 48 can be connected more tightly. Meanwhile, the positioning seat 48 provides enough installation space for the outer limiting block 42 and the inner pressing block 43, and as shown in fig. 4, a plurality of outer limiting blocks 42 can be mutually matched to position and clamp the fish tail end.

In one embodiment, the inner compression block 43 is rotatable relative to the extension shaft 41, and the inner compression block 43 is provided with an arcuate compression surface 431. The inner compression block 43 in this embodiment can be hinged to the positioning seat 48, and two end faces of the inner compression block 43 are arc compression faces 431, and the compression force of the inner compression block 43 to the fish tail end can be adjusted by rotating the arc compression faces 431, so that the matching tightness of the inner compression block 43 and the fish tail end is improved.

As shown in fig. 5, the end surface reference block 31 includes a first positioning plate 311 and a second positioning plate 312 that are perpendicular to each other, and the first positioning plate 311 and the second positioning plate 312 are each provided with a positioning surface for contacting the end surface of the main chord; the mounting frame 1 further comprises a bearing block 13 arranged at the top of the bracket 11, and the frame 12 is hinged with the bearing block 13 through a rotating shaft 14. The first positioning plate 311 and the second positioning plate 312 in this embodiment can form an L-shaped end surface reference block 31, so that the end surface reference block 31 can perform axial and radial limiting on the main chord end of the main chord 210, and the positioning accuracy of the end surface reference block 31 on the main chord end is improved. When it is desired to rotate the tower section 200, the frame 12 may be manually rotated to rotate the frame 12 about the axis of the rotating shaft 14. The bearing seat 13 is detachably connected with the bracket 11, and the rotating shaft 14 is detachably connected with the frame 12, so that the replacement of parts can be facilitated.

As shown in fig. 2, in the embodiment of the present utility model, as shown in fig. 3 and 4, the mounting frame 1 further includes a positioning sleeve 15 and a fixing shaft 16, wherein the positioning sleeves 15 are mounted on the frame 12 at intervals around the rotation center of the frame 12, and the fixing shaft 16 is used for extending into the positioning sleeve 15 and limiting the frame 12 relative to the bracket 11; the two frames 12 are connected by at least two connecting shafts 17. After the frame 12 rotates to a designated position relative to the bracket 11, the fixing shaft 16 can pass through the bracket 11 and be inserted into the positioning sleeve 15, so that the frame 12 is stopped in a rotating way, the number of the positioning sleeves 15 can be set according to actual use requirements, and the fixing shaft 16 is L-shaped. The two frames 12 are connected through the connecting shaft 17, so that the structure of the tower section positioning and clamping tool 100 is more stable, and the connecting shaft 17 and the frames 12 are detachably connected, so that the adjustment of the installation frame 1 can be facilitated. After the riveting and welding processes of the tower section 200 are completed, the extension shaft 41 drives the outer limiting block 42 and the inner clamping block 43 to withdraw from the fish tail and retract to the original position, and after the tower section 200 is hoisted to the fish tail clamping mechanism 4, the tower section is hoisted vertically upwards to be demoulded.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

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; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. 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.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. Tower section positioning and clamping fixture, tower section (200) including a main chord (210) having a main chord end and a fish tail end, characterized in that the tower section positioning and clamping fixture (100) comprises:

the two mounting frames (1) are oppositely arranged and enclose a rivet welding space (2) for accommodating the tower section (200), and the mounting frames (1) comprise a bracket (11) and a frame (12) rotatably arranged on the bracket (11);

the main chord positioning mechanism (3) is arranged on one of the frames (12), the main chord positioning mechanism (3) comprises an end surface reference block (31) and a main chord connecting seat (32), the end surface reference block (31) is used for being in contact positioning with the end surface of the main chord, and the main chord connecting seat (32) is used for being connected with the end of the main chord;

the fish tail clamping mechanism (4) is arranged on the other frame (12), the fish tail clamping mechanism (4) comprises an extension shaft (41), an outer limiting block (42) and an inner pressing block (43), the outer limiting block (42) and the inner pressing block (43) are connected with the extension shaft (41), the extension shaft (41) can stretch and retract relative to the rivet welding space (2), and the outer limiting block (42) and the inner pressing block (43) are used for clamping the fish tail inside and outside.

2. The tower section positioning and clamping fixture according to claim 1, wherein the main string positioning mechanism (3) further comprises a positioning shaft sleeve (33) arranged on the main string connecting seat (32), and the positioning shaft sleeve (33) is used for being connected with the main string end through a positioning pin shaft.

3. The tower section positioning and clamping fixture according to claim 2, wherein the number of the positioning shaft sleeves (33) is plural, and the central lines of any two adjacent positioning shaft sleeves (33) are mutually perpendicular.

4. The tower section positioning and clamping fixture according to claim 2, wherein a plurality of said positioning bushings (33) comprises a full circle bushing and a half circle bushing with an opening.

5. Tower segment locating and clamping fixture according to any of the claims 1 to 4, wherein said fish tail clamping mechanism (4) further comprises:

a threaded end cover (44) mounted on the frame (12), wherein a trapezoid threaded hole is formed in the threaded end cover (44);

a rotation assembly (45) comprising a rotating wheel (451) and a threaded shaft (452) connected to the rotating wheel (451), the threaded shaft (452) being in threaded engagement with the trapezoidal threaded hole;

the clamping ring (46), the screw shaft (452) is provided with a step groove for the extension shaft (41) to extend in, the clamping ring (46) is installed in the step groove and is annularly arranged outside the extension shaft (41), and the clamping ring (46) is in clearance fit with the extension shaft (41) and limits the extension shaft (41) along the extension direction of the extension shaft (41).

6. The tower section positioning and clamping tool according to claim 5, wherein the fish tail clamping mechanism (4) further comprises a guide end cover (47), the guide end cover (47) is mounted on one side of the frame (12) facing the rivet welding space (2), the threaded end cover (44) is mounted on one side of the frame (12) facing away from the rivet welding space (2), and the protruding shaft (41) penetrates through the guide end cover (47) and is in guide fit with the guide end cover (47) through a guide key.

7. The tower section positioning and clamping fixture according to claim 5, wherein the fish tail clamping mechanism (4) further comprises:

the positioning seat (48), the outer limiting block (42) and the inner pressing block (43) are both arranged on the positioning seat (48), the section size of the positioning seat (48) is larger than that of the extension shaft (41), and the positioning seat (48) is provided with a connecting hole for the extension shaft (41) to extend in;

the fastening ring (49) is clamped in the connecting hole, and the fastening ring (49) is sleeved outside the extension shaft (41) and is used for fastening and connecting the extension shaft (41) and the positioning seat (48).

8. Tower segment positioning and clamping fixture according to any of the claims 1-4, characterized in that the inner clamping blocks (43) are rotatable relative to the protruding shaft (41) and that the inner clamping blocks (43) are provided with arc-shaped clamping surfaces (431).

9. Tower segment locating and clamping fixture according to any of the claims 1 to 4, characterized in that said end surface reference block (31) comprises a first locating plate (311) and a second locating plate (312) perpendicular to each other, said first locating plate (311) and second locating plate (312) being provided with locating surfaces for contacting said main chord end surface;

and/or the number of the groups of groups,

the mounting frame (1) further comprises a bearing seat (13) arranged at the top of the bracket (11), and the frame (12) is hinged with the bearing seat (13) through a rotating shaft (14).

10. The tower section positioning and clamping fixture according to any one of claims 1 to 4, wherein the mounting frame (1) further comprises a positioning sleeve (15) and a fixed shaft (16), a plurality of positioning sleeves (15) are mounted on the frame (12) at intervals around the rotation center of the frame (12), and the fixed shaft (16) is used for extending into the positioning sleeve (15) and limiting the frame (12) relative to the bracket (11);

and/or the number of the groups of groups,

the two frames (12) are connected by at least two connecting shafts (17).