CN217501252U

CN217501252U - Inhaul cable for wind tower for wind power generation

Info

Publication number: CN217501252U
Application number: CN202122234405.XU
Authority: CN
Inventors: 苏桥; 苏均; 张后禅; 许培耀
Original assignee: Shanghai Electric Research Concrete Building Science And Technology Group Co ltd; Liuzhou Guiqiao Cable Co ltd
Current assignee: Shanghai Electric Research Concrete Building Science And Technology Group Co ltd; Liuzhou Guiqiao Cable Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-09-27
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to a wind power generation is cable for wind tower, including the finished product cable, still include anchor case subassembly, lower anchor case subassembly, two spherical backing rings and two spherical nuts, it includes two upper junction plates of building tower end on the wind power generation wind tower to go up anchor case subassembly, go up anchor backing plate and two and go up the reinforcing plate, lower anchor case subassembly includes two lower junction plates of building tower base end under the wind power generation wind tower, lower anchor backing plate and two lower reinforcing plates, still install respectively on the upper and lower anchor backing plate and be used for sealed finished product cable anchor head, the split type safety cover of spherical backing ring and spherical nut. The finished cable upper end and the finished cable lower end of the inhaul cable are respectively installed by adopting the upper anchor box assembly, the lower anchor box assembly, the spherical backing ring and the spherical nut in a matched mode, the tensioning lugs are welded on the lower anchor box assembly and used for tensioning the finished cable, tensioning and cable adjusting can be achieved on the base of the wind power generation wind tower, a large tensioning space does not need to be reserved at the lower end of the base, and cost can be saved.

Description

Inhaul cable for wind tower for wind power generation

Technical Field

The utility model relates to a prestressing force cable, in particular to cable for wind power generation wind tower.

Background

Wind power generation is used as clean energy, more and more wind power generation is popularized and used, wind power generators are installed at the top end of a wind tower, the wind tower generally comprises concrete tower barrels assembled by sections, the height of each section of tower barrel is 2.5-3 m, the wind tower can reach the height of 40-80 m according to design, 8-24 bundles of guys are generally arranged inside the tower barrels and used for fixing the tower barrels which are overlapped together, and the guys are shown in figure 1. The guy cable is composed of a plurality of steel strands with the outer diameter of 15.2mm, the upper end and the lower end of the tower are fixed by anchors, and the upper end and the lower end of the tower are tensioned through the space below the tower so as to achieve a certain force value for anchoring. There are some disadvantages in the construction and installation process: a large stretching movement space needs to be reserved at the lower end of the base of the wind power tower, and the cable body steel strands need to be installed in an aligned mode one by one, so that the construction quantity is large, the construction period is long, and the cable force is inconvenient to adjust.

The Chinese patent discloses a steel strand body external stay cable structure system for a wind tower, which is a steel strand stay cable system adopting a combined anchoring mode of an extrusion anchor and a clamping piece group anchor, is favorable for the installation of a narrow space structure at the top of the tower, but the upper end of the system is fixed by a nut, the lower tensioning end is anchored by a clamping piece anchorage, and the problems that the steel strands of the cable body need to be aligned and installed one by one, and the installation and tensioning processes are relatively complex exist.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the utility model provides a simple structure, be convenient for construction and transfer simple cable for wind power generation wind tower, anchor case subassembly is adopted respectively to the finished product cable upper and lower end of this cable for wind power generation wind tower, anchor case subassembly and spherical backing ring down, the cooperation installation of spherical nut, and it has the stretch-draw ear to be used for the stretch-draw of finished product cable to weld on anchor case subassembly down, can realize like this that stretch-draw and transfer the cable on the base of wind power generation wind tower, great stretch-draw space need not reserved again to the base lower extreme, can save the cost.

The technical scheme for solving the technical problems is as follows: the inhaul cable for the wind power generation wind tower comprises a finished cable, wherein the finished cable comprises a cable body, anchor heads arranged at two ends of the cable body, an upper anchor box assembly, a lower anchor box assembly, two spherical backing rings and two spherical nuts, the upper anchor box assembly comprises two upper connecting plates, an upper anchor backing plate and two upper reinforcing plates which are poured at the upper tower end of the wind power generation wind tower, the lower anchor box assembly comprises two lower connecting plates, a lower anchor backing plate and two lower reinforcing plates which are poured at the lower tower base end of the wind power generation wind tower, through holes for the finished cable to pass through are formed in the upper anchor backing plate and the lower anchor backing plate, and the anchor heads at the upper ends of the finished cable pass through the upper anchor backing plate and are fixed above the upper anchor backing plate through the spherical backing rings and the spherical nuts; the lower end anchor head of the finished cable penetrates through the lower anchor backing plate and is fixed below the lower anchor backing plate through the spherical backing ring and the spherical nut, and the spherical nut is in threaded connection with the anchor head of the finished cable; the opposite end surfaces of the upper anchor backing plate and the lower anchor backing plate are respectively connected with the upper reinforcing plate and the lower reinforcing plate, the upper anchor backing plate and the two upper reinforcing plates are connected between the two upper connecting plates, the lower anchor backing plate and the two lower reinforcing plates are connected between the two lower connecting plates, and tensioning lugs are further fixed on the outer sides of the two lower connecting plates; and the upper anchor backing plate and the lower anchor backing plate are respectively provided with a split type protective cover used for sealing the finished cable anchor head, the spherical backing ring and the spherical nut.

The tension lugs are U-shaped structures formed by transverse plates and longitudinal plates fixed at two ends of the transverse plates, and tension rod through holes are formed in the transverse plates.

Split type safety cover include two half cover bodies, half cover body includes the semicircle ring body, connects the sealed lid in semicircle ring body one end and connects at the peripheral semicircle ring flange of semicircle ring body other end, be provided with flange on the half cover body, connect through flange and bolt and nut between two half cover bodies, split type safety cover is installed on last anchor backing plate and lower anchor backing plate through two semicircle ring flange and screw.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. the utility model discloses go up the lower extreme and adopt respectively anchor case subassembly, lower anchor case subassembly and spherical backing ring, spherical nut cooperation installation finished product cable. The upper connecting plate of the upper anchor box assembly and the lower connecting plate of the lower anchor box assembly are embedded in the wind power generation wind tower, and the tensioning lugs are welded on the lower connecting plate and used for tensioning finished cables, so that tensioning and cable adjustment can be realized on the base of the wind power generation wind tower, a large tensioning space does not need to be reserved at the lower end of the base, the cost can be saved, and tensioning is convenient.

2. The tensioning lug is used as a reaction point for tensioning, and the original structure stress system is not changed in the tensioning cable force conversion process of the structure.

3. The utility model discloses the both ends anchor head of finished product cable all realizes the anchor through spherical backing ring, spherical nut and anchor backing plate, during the reeving direct whole cable according to corresponding the position hang into can, need not like single reeving like steel strand wires, greatly reduced construction cycle.

4. The spherical cushion ring and the spherical nut are matched for use, so that the tensile force is transmitted more uniformly through the spherical surface, and the stress concentration is reduced.

5. The split type protective cover consisting of two split type half cover bodies is adopted, and the two half cover bodies are screwed up and connected through bolts, so that the installation is convenient.

The technical features of the guy cable for wind power tower according to the present invention will be further described with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1: the structure of the existing wind power generation tower is schematic.

FIG. 2: the utility model relates to a wind power generation is cable structure schematic diagram for wind tower.

FIG. 3: the utility model relates to a cross-sectional view is looked to cable owner for wind power generation wind tower.

FIG. 4: the utility model discloses lower anchor case subassembly and stretch-draw ear structure sketch map.

FIG. 5 is a schematic view of: the utility model discloses lower anchor case subassembly and stretch-draw ear main view cross-section.

FIG. 6: the utility model discloses a split type safety cover stereogram.

FIG. 7 is a schematic view of: the utility model discloses stretch-draw state diagram.

In the figure: a-upper tower end, B-lower tower base end.

P1-upper tower, P2-assembled tower body, P3-shell, P4-lower end tower base and P5-lower end tensioning space.

K1-a tensioning jack, K2-a tensioning clamping block, K3-a tensioning cross beam, K4-a guide sleeve and K5-a tensioning rod.

Detailed Description

Example 1: a guy cable for a wind power generation wind tower is shown in figures 2-6 and comprises a finished cable 5, wherein the finished cable comprises a cable body 51 and anchor heads 52 arranged at two ends of the cable body, and further comprises an upper anchor box component 2, a lower anchor box component 6, two spherical backing rings 4 and two spherical nuts 3, the upper anchor box component comprises two upper connecting plates 21, an upper anchor backing plate 22 and two upper reinforcing plates 23 which are poured at the upper tower end of the wind power generation wind tower, the lower anchor box component comprises two lower connecting plates 61, a lower anchor backing plate 62 and two lower reinforcing plates 63 which are poured at the lower tower base end of the wind power generation wind tower, through holes for the finished cable to pass through are formed in the upper anchor backing plate 22 and the lower anchor backing plate 62, and the upper end anchor head of the finished cable passes through the upper anchor backing plate and is fixed above the upper anchor backing plate through the spherical backing rings 4 and the spherical nuts 3; the lower end anchor head of the finished cable penetrates through the lower anchor backing plate and is fixed below the lower anchor backing plate through the spherical backing ring and the spherical nut, and the spherical nut is in threaded connection with the anchor head of the finished cable; the opposite end surfaces of the upper anchor backing plate and the lower anchor backing plate are respectively connected with an upper reinforcing plate 23 and a lower reinforcing plate 63, the upper anchor backing plate 22 and the two upper reinforcing plates 23 are connected between the two upper connecting plates 21, the lower anchor backing plate 62 and the two lower reinforcing plates 63 are connected between the two lower connecting plates 61, and tensioning lugs 7 are further fixed on the outer sides of the two lower connecting plates; and the upper anchor backing plate and the lower anchor backing plate are respectively provided with a split type protective cover 1 for sealing a finished cable anchor head, a spherical backing ring and a spherical nut.

In this embodiment, the tension ears are U-shaped structures formed by transverse plates 71 and longitudinal plates 72 fixed to both ends of the transverse plates, and the transverse plates are provided with tension rod through holes 73.

In this embodiment, split type safety cover 1 include two half cover bodies, half cover body includes the semicircle ring body 12, connects sealed lid 13 in semicircle ring body one end and connects at semicircle ring body other end outlying semicircle flange 11, be provided with flange 14 on the half cover body, connect through flange and bolt and nut (flange can adopt the preparation of resistant oil rubber, connect through bolt tightening behind the installation sealing washer in resistant oil rubber) between two half cover bodies, split type safety cover passes through two semicircle ring flange and the mounting screw on last anchor backing plate and lower anchor backing plate.

The utility model discloses installation stretch-draw process:

1. in the early stage of installation, an upper connecting plate of an upper anchor box assembly and a lower connecting plate of a lower anchor box assembly are embedded in advance when an upper tower and a lower end base are poured, a finished cable penetrates after the tower crane is assembled, and an anchor head of the finished cable can be assembled by pre-tightening two ends of a spherical nut and a spherical backing ring.

2. After the rope threading is finished, tensioning is carried out on the surface of the lower base by using a tensioning tool through tensioning lugs on two sides of the lower anchor box assembly as reaction points, and a rope body is tensioned on the surface of the base in a rope adjusting tensioning state, as shown in fig. 7. The cable body is sleeved with a guide sleeve (the guide sleeve is split and consists of two semicircular pipes), and the guide sleeve is clamped by a tensioning clamping block integrally connected with a tensioning cross beam. During tensioning, a tensioning jack is used, a tensioning rod penetrates through tensioning rod through holes of tensioning lugs on two sides of the jack and a lower anchor box assembly, a nut is locked to serve as a reaction point, force conversion is completed through a tensioning cross beam, an anchor head serves as a stress point to be tensioned, namely the tensioning cross beam applies force to a guide pipe, the guide pipe applies force to a finished cable anchor head, a spherical nut is locked to complete tensioning after required tensioning force is achieved, finally a split type protective cover is covered, and the anchor head nut and the like are protected from erosion.

The utility model discloses accord with wind power tower finished product cable JT850-2013 "extrusion anchor steel strand cables", JTT 1090 and 2016 standard specification design requirements such as bridge is with packing type epoxy coating steel strand extrusion anchor cable ", the dependable performance.

Claims

1. The utility model provides a cable for wind power generation wind tower, includes finished product cable (5), finished product cable is including cable body (51) and install anchor head (52) at cable body both ends, its characterized in that: the wind power generation wind tower is characterized by further comprising an upper anchor box component (2), a lower anchor box component (6), two spherical backing rings (4) and two spherical nuts (3), wherein the upper anchor box component comprises two upper connecting plates (21), an upper anchor backing plate (22) and two upper reinforcing plates (23) which are poured at the upper tower end of the wind power generation wind tower, the lower anchor box component comprises two lower connecting plates (61), a lower anchor backing plate (62) and two lower reinforcing plates (63) which are poured at the lower tower base end of the wind power generation wind tower, through holes for finished cables to pass through are formed in the upper anchor backing plate and the lower anchor backing plate, and the upper anchor head of the finished cables passes through the upper anchor backing plate and is fixed above the upper anchor backing plate through the spherical backing rings and the spherical nuts; the lower end anchor head of the finished cable penetrates through the lower anchor backing plate and is fixed below the lower anchor backing plate through the spherical backing ring and the spherical nut, and the spherical nut is in threaded connection with the anchor head of the finished cable; the opposite end surfaces of the upper anchor backing plate and the lower anchor backing plate are respectively connected with the upper reinforcing plate and the lower reinforcing plate, the upper anchor backing plate and the two upper reinforcing plates are connected between the two upper connecting plates, the lower anchor backing plate and the two lower reinforcing plates are connected between the two lower connecting plates, and tensioning lugs (7) are further fixed on the outer sides of the two lower connecting plates; and the upper anchor backing plate and the lower anchor backing plate are respectively provided with a split type protective cover 1 for sealing a finished cable anchor head, a spherical backing ring and a spherical nut.

2. The guy cable for a wind tower for wind power generation according to claim 1, wherein: the tension lug is a U-shaped structure consisting of a transverse plate (71) and longitudinal plates (72) fixed at two ends of the transverse plate, and the transverse plate is provided with a tension rod through hole (73).

3. The guy cable for a wind tower for wind power generation according to claim 1 or 2, wherein: split type safety cover include two semi-circular ring bodies, the semi-circular ring body includes semi-circular ring body (12), connects sealed lid (13) in semi-circular ring body one end and connects at semi-circular ring body other end outlying semi-circular ring flange (11), be provided with flange (14) on the semi-circular ring body, connect through flange and bolt and nut between the two semi-circular ring bodies, split type safety cover is through two semi-circular ring flange and mounting screw on last anchor backing plate and lower anchor backing plate.