Whole pre-splicing jig frame for twin tower

Abstract

The utility model discloses a double-limb tower integral pre-splicing jig frame which comprises a jig frame cross beam, a supporting plate assembly is arranged on the top of the jig frame cross beam in a mirror image mode, the supporting plate assembly comprises a first supporting plate and a jig frame inclined strut, and a plurality of second supporting plates are vertically fixed to the surface of the jig frame inclined strut. The first supporting plate is used for arranging the supporting plate elevation according to the slope of the linear twisted wall plate, it is guaranteed that the transverse tower center lines of all the double-limb tower sections are located at the same elevation, and the second supporting plate is used for limiting. According to the jig frame disclosed by the utility model, the real tower line type pre-assembly of the curve twin tower can be realized, the real tower position state can be simulated, and the overall line type precision of the twin tower and the connection precision between sections can be better controlled; the jig frame is flexible in arrangement, simple and practical in structure, capable of being recycled and high in economic benefit; the bed-jig supporting plates are arranged in a fixed-size mode in the elevation direction and the transverse direction, and the section positioning efficiency during pre-assembling can be improved.

Description

Technical Field

[0001] The utility model relates to a pre-assembled frame, in particular to an integral pre-assembled frame for a double-limb tower. Background Art

[0002] Electricity towers can be divided into angle steel towers and steel tubular towers based on their structural form. Currently, most steel tubular towers, both domestically and internationally, utilize external flange connections or plug-in connections. Their appearance is essentially a single-tower structure with regular 16-gons, regular 32-gons, or regular 64-gons. These uniform shapes make them relatively easy to manufacture. Special towers utilize an irregular polygonal twin-tower structure connected by internal flanges. The segmental connections utilize internal flanges, and the cross-section is composed of irregular polygons that continuously change along the tower's elevation. The entire tower is a twin-tower structure. Their elegant overall shape, resembling a betel nut, has led to their nickname, the Betel Nut Tower, but their overall manufacturing is extremely challenging. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to propose a pre-assembled frame for a double-limb tower to ensure the overall linear and shape requirements of the double-limb tower.

[0004] Technical solution: The double-limb tower integral pre-assembled tire frame of the utility model includes a tire frame cross beam, and a support plate assembly is arranged in a mirror image on the top of the tire frame cross beam. The support plate assembly includes a first support plate and a tire frame diagonal support. A plurality of second support plates are vertically fixed to the surface of the tire frame diagonal support. The first support plate is arranged at the support plate elevation according to the slope of the linear twisted wall panel, and ensures that the transverse tower center lines of all double-limb tower segments are at the same elevation. The second support plate is used for limiting.

[0005] The elevation deviation of the first support plate is no more than 2 mm.

[0006] The linear deviation between the two ends of the left and right width segments of the double-limb tower and the longitudinal center line of the tower is no more than 5mm, and the height deviation between the center of the hole group at the end of the segment and the top surface of the tire frame is no more than 2mm.

[0007] The segments of the double-limb tower are connected by inner flange components.

[0008] The inner flange assembly includes an anchor plate and a flange plate, the anchor plate includes an upper anchor plate and a lower anchor plate, the flange plate includes an upper flange plate and a lower flange plate, an upper flange plate and a lower flange plate are arranged between the upper anchor plate and the lower anchor plate, and several flange reinforcements are connected between the flange plate and the adjacent anchor plates.

[0009] The manufacturing frame of the linear twisted wall panel includes a ground platform and multiple integral support plates. The linear twisted wall panels are placed on the surfaces of the multiple integral support plates. The support plate slope on each section of the integral support plate is consistent with that of the linear twisted wall panel. The integral support plate includes multiple support plates, and a ground platform is provided at the bottom of each support plate.

[0010] The linear error of the manufacturing frame of the linear twisted siding does not exceed 2mm.

[0011] The thickness of the integral support plate is not less than 16 mm, and the slope of the support plate on each section must be consistent with the linear twisted wall panel.

[0012] Beneficial effects: The tire frame of the utility model can realize the pre-assembly of the actual tower line of the curved double-limb tower, simulate the actual tower position, and can better control the overall line accuracy of the double-limb tower and the connection accuracy between segments; the tire frame is flexible in layout, simple and practical in structure, and can be recycled, with high economic benefits; the height and horizontal directions of the tire frame support plates are all arranged in fixed sizes, which can improve the segment positioning efficiency during pre-assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the overall pre-assembled frame of the double-limb tower of the utility model;

[0014] Figure 2 This is a schematic diagram of the pre-assembled frame of the double-limb tower of the present invention;

[0015] Figure 3 This is a schematic diagram of the linear twisted wall panel of the present invention;

[0016] Figure 4 for Figure 3 Special tire frame for manufacturing linear twisted siding;

[0017] Figure 5 for Figure 4 Cross-sectional views of the support plate of the special tire frame for manufacturing linear twisted wall panels; among them, (a) is the AA cross-sectional view; (b) is the BB cross-sectional view; (c) is the CC cross-sectional view; (d) is the DD cross-sectional view; (e) is the EE cross-sectional view;

[0018] Figure 6 It is a schematic diagram of the inner flange assembly of the present invention;

[0019] Figure 7 This is a schematic diagram of the segment division of the double-limb tower manufacturing method of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2As shown, the pre-assembled double-leg tower frame of the present invention includes a frame crossbeam 20, with a mirror-image support plate assembly arranged on top of the frame crossbeam 20. The support plate assembly includes a first support plate 22 and a frame diagonal brace 21. Multiple second support plates 23 are vertically fixed to the surface of the frame diagonal brace 21. The first support plates 22 are arranged at the same elevation according to the slope of the linear twisted wall panel, ensuring that the transverse tower centerline M of all steel tower segments is at the same elevation. The second support plates 23 are used for position limiting. The first support plates 22 are first laid out according to theoretical calculations to ensure that the transverse tower centerline M of each section is 1900mm above the top surface of the frame crossbeam 20. The width of the first support plates 22 is no less than 200mm, and the spacing is 400-600mm. The support plates are then cut and manufactured according to the theoretical calculations. Finally, the first support plate assembly position lines are marked on both sides with the tower longitudinal centerline N as the reference, with a lateral deviation of no more than 2mm. The first support plate elevations are simultaneously verified using a level. For each crossbeam, the support plate will be set out in CAD, and each section will have similar Figure 1 After the tire frame is prepared and the support plates are arranged, the support plates are cut and made according to the laid-out drawing, and then installed, positioned and measured on site.

[0022] Control the elevation deviation of the first support plate 22 to be no more than 2mm, position the left and right width segments in sequence on the integral pre-assembled frame, perform pre-assembly, measure the distances between the two ends of the left and right width segments and the longitudinal center line N of the tower respectively, control the linear deviation to be no more than 5mm, and the height between the center of the hole group at the end of the segment and the top surface of the frame, control the deviation to be no more than 2mm.

[0023] After the measurement is qualified, the segments are fixed to the tire frame, and the segments are assembled in sequence. The segments are connected with the internal flange components and the through-hole rate is guaranteed to be 100%. Figure 6 As shown, the inner flange assembly includes an anchor plate and a flange plate. The anchor plate includes an upper anchor plate 41 and a lower anchor plate 42. The flange plate includes an upper flange plate 51 and a lower flange plate 52. An upper flange plate 51 and a lower flange plate 52 are provided between the upper anchor plate 41 and the lower anchor plate 42. Several flange stiffeners 53 are connected between the flange plate and the adjacent anchor plates.

[0024] like Figure 7 As shown, the segments of the double-limb tower are divided into the bottom segment, the middle segment and the top segment. The length of the bottom segment is less than 7m. The length of the bottom segment of this embodiment is 6.3m. The length of the bottom segment is small and the longitudinal line shape of the bottom is small, so it is not considered to be segmented again. The middle segment of the tower includes standard length segments and special position segments. The standard length segment of this embodiment is Figure 7Segments 02 to 07 have a standard length of 10m. Each standard length segment is further divided into manufacturing segments. The manufacturing segment division is performed by staggering the partition positions within the standard length segment by 100mm. The segment lengths are 5.1m and 4.9m respectively. Segments 08 to 10 are special position segments and are segmented according to the crossarm positions. The remaining segments are the tower top segments. The tower top segment of this embodiment is segment 11, which is 6.2m long. The tower top segment consists of two manufacturing segments, welded together by the upper tower crown and the lower double-limb segment. The lower double-limb segment serves as the double-limb tower joint segment and has a 30mm reserve at the top. The upper tower crown is a non-expandable curved surface and is manufactured separately.

[0025] When assembling to the tower top segment, measure the longitudinal deviation of the left and right segments, cut the top opening margin of the joint segment in the tower top segment according to the actual deviation, assemble the tower crown, and weld the tower crown and the joint segment into an integral segment; weld the transverse butt welds between the manufactured segments.

[0026] Since the cross section of the double-limb tower is an irregular polygonal cross section that is constantly changing, and the angle between the wall panel and the horizontal is constantly changing, the wall panels in the segment are linearly twisted. Therefore, the wall panels with linear twist need to be divided and manufactured separately. The slopes of the upper and lower sections of the linear twisted wall panels are different, which causes the wall panels to twist. According to the actual BIM model, the slopes of each section of the wall panel along the elevation direction change linearly, as shown below. Figure 3 shown.

[0027] Linear twisted siding is made of Figure 4 The tire frame shown in the figure is manufactured, and the tire frame includes a ground platform 326 and a plurality of integral support plates. The ground platform 326 is fixed to the foundation with expansion bolts, and linear twisted wall panels are placed on the surfaces of the plurality of integral support plates. The thickness of the integral support plates is not less than 16 mm, and the slope of the support plates on each section must be consistent with the linear twisted wall panels. The integral support plates include a first support plate 321, a second support plate 322, a third support plate 323, a fourth support plate 324 and a fifth support plate 325. A ground platform 326 is provided at the bottom of each support plate. The cross-sectional views of the first support plate 321, the second support plate 322, the third support plate 323, the fourth support plate 324 and the fifth support plate 325 are shown as follows: Figure 5 As shown in (a) to (e).

[0028] The production process of linear twisted siding includes the following steps:

[0029] 1) First, assemble the tire frame. The tire frame is composed of a ground platform and an integral support plate. The entire tire frame must have a certain degree of rigidity. The ground platform and the foundation are fixed with expansion bolts. The thickness of the integral support plate is 20mm, and the support plate slope on each section must be consistent with the linear twist wall plate. Inspect the tire frame and control the linear error to no more than 2mm.

[0030] 2) Place the linear twisted siding on the tire frame, fix the siding to the tire frame with U-shaped clips, and use the hot straightening process to form. The hot straightening temperature does not exceed 650℃. The hot straightening should be carried out in a step-by-step manner until the siding and the tire frame are 100% close together.

[0031] 3) During the thermal correction process, a level is used to measure the elevation of each characteristic point and monitor the linear shape of the siding until the thermal correction is qualified.

Claims

1. A double-limb tower integral pre-assembled frame, characterized in that: The integral pre-assembled tire frame of the double-limb tower includes a tire frame cross beam, and a support plate assembly is arranged in a mirror image on the top of the tire frame cross beam. The support plate assembly includes a first support plate and a tire frame diagonal support. A plurality of second support plates are vertically fixed to the surface of the tire frame diagonal support. The first support plates are arranged at the support plate elevation according to the slope of the linear twisted wall panel and ensure that the transverse tower center lines of all double-limb tower segments are at the same elevation. The second support plates are used for limiting.

2. A double-limb tower integral pre-assembled frame according to claim 1, characterized in that: The elevation deviation of the first support plate is no more than 2 mm.

3. The double-limb tower integral pre-assembled frame according to claim 1, characterized in that: The linear deviation between the two ends of the left and right width segments of the double-limb tower and the longitudinal center line of the tower is no more than 5mm, and the height deviation between the center of the hole group at the end of the segment and the top surface of the tire frame is no more than 2mm.

4. A double-limb tower integral pre-assembled frame according to claim 3, characterized in that: The segments of the double-limb tower are connected by inner flange components.

5. The double-limb tower integral pre-assembled frame according to claim 4, characterized in that: The inner flange assembly includes an anchor plate and a flange plate, the anchor plate includes an upper anchor plate and a lower anchor plate, the flange plate includes an upper flange plate and a lower flange plate, an upper flange plate and a lower flange plate are arranged between the upper anchor plate and the lower anchor plate, and several flange reinforcements are connected between the flange plate and the adjacent anchor plates.

6. The double-limb tower integral pre-assembled frame according to claim 1, characterized in that: The manufacturing frame of the linear twisted wall panel includes a ground platform and multiple integral support plates. The linear twisted wall panels are placed on the surfaces of the multiple integral support plates. The support plate slope on each section of the integral support plate is consistent with that of the linear twisted wall panel. The integral support plate includes multiple support plates, and a ground platform is provided at the bottom of each support plate.

7. The double-limb tower integral pre-assembled frame according to claim 6, characterized in that: The linear error of the manufacturing frame of the linear twisted siding does not exceed 2mm.

8. The double-limb tower integral pre-assembled frame according to claim 6, characterized in that: The thickness of the integral support plate is not less than 16 mm.

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