Lattice tower prestressed cable construction method and lattice tower

Abstract

The present invention belongs to the technical field of wind power generation, and discloses a prestressed cable construction method for a lattice tower and a lattice tower. The prestressed cable construction method for a lattice tower comprises the steps of installing a bracket, installing a cable ring plate, arranging a traction mechanism, performing a cable threading operation, and adjusting the cable ring plate. In the above-mentioned construction method, the traction mechanism pulls the cable ring plate to drive one end of the prestressed cable to move, so that the prestressed cable can be normally lifted. Since one end of the prestressed cable is connected to the cable ring plate in advance, the prestressed cables will not be entangled with each other during the lifting process, which is beneficial to improving the cable threading construction efficiency of the prestressed cable. Moreover, by fixing the cable ring plate at the corner position of the lattice tower, the friction between the prestressed cable and the corner position can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a lattice tower prestressed cable construction method and a lattice tower. Background Art

[0002] In order to alleviate the environmental problems caused by the use of fossil energy, wind energy, as a developed clean energy, has been widely used in many fields. Among them, the use of wind energy for power generation is a rapidly developing field, and wind turbines are important equipment for realizing wind energy power generation.

[0003] In the prior art, with the development of large-scale and high-altitude wind turbines, the application of lattice wind turbine towers has begun to increase. The principle is to apply prestressed cables in hollow steel tube concrete to improve the bearing capacity of the entire tower. Among them, the height of the lattice section has become higher and higher with the development of the industry, and the lattice section near the blade tip needs to be set with an angle to meet the blade tip clearance distance limit so that the blade can rotate normally. At the same time, more prestressed cables need to be arranged in each column to adapt to the large load of the unit. The increase in the height of the lattice section brings about a larger weight of the prestressed bundle, making it impossible to lift the entire bundle of the cable, resulting in low construction efficiency of a single cable, and it is impossible to ensure that the cables will not be entangled with each other during the cable threading process. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low cable threading efficiency of the prestressed cable in the existing lattice tower prestressed cable threading construction method.

[0005] To this end, the present invention provides a lattice tower prestressed cable construction method, comprising:

[0006] Install the bracket: an upper bracket and a lower bracket are respectively arranged at the upper anchoring end and the lower anchoring end of the lattice tower, and an upper anchor head is fixed on the upper bracket, and a lower anchor head is fixed on the lower bracket;

[0007] Install the grommet plate: first install the grommet plate in the lattice tower, and then connect a number of guide ropes, both ends of which are connected to the upper anchor head and the lower anchor head, to the grommet plate to guide the grommet plate;

[0008] Arrange the traction mechanism: arrange the upper traction mechanism on one side of the upper anchoring end, and connect the traction end of the upper traction mechanism and the grommet plate through a first traction rope; arrange the lower traction mechanism on one side of the lower anchoring end, and connect the traction end of the lower traction mechanism and the grommet plate through a second traction rope;

[0009] Carry out the cable threading work: first connect one end of the prestressed cable to the cable threading ring plate, and then use the upper traction mechanism and the lower traction mechanism to pull the cable threading ring plate to drive one end of the prestressed cable to move between the upper anchor head and the lower anchor head, so as to connect the two ends of the prestressed cable to the upper anchor head and the lower anchor head respectively.

[0010] Optionally, the above-mentioned prestressed cable threading construction method for a lattice tower further includes a step of adjusting the cable threading ring plate after the cable threading step, and the step of adjusting the cable threading ring plate includes: pulling the cable threading ring plate to the corner position of the lattice tower through the lower traction mechanism to provide prestressed deflection to the prestressed cable through the cable threading ring plate.

[0011] Optionally, in the above-mentioned lattice tower prestressed cable construction method, the step of adjusting the cable ring plate also includes: connecting one end of the first traction cable connected to the upper traction mechanism to the upper anchor head, and connecting one end of the second traction cable connected to the lower traction mechanism to the lower anchor head.

[0012] Optionally, the above-mentioned lattice tower prestressed cable construction method, after the cable ring plate adjustment step, also includes a bracket removal step, and the bracket removal step includes: moving the upper anchor head from the upper bracket to the upper anchor end and fixing it, and removing the upper bracket; moving the lower anchor head from the lower bracket to the lower anchor end and fixing it, and removing the lower bracket.

[0013] Optionally, in the above-mentioned lattice tower prestressed cable threading construction method, in the cable threading work step, the cable threading ring plate is first pulled to the lower anchor end by the lower traction mechanism, and one end of the prestressed cable is connected to the cable threading ring plate, and then the cable threading ring plate is pulled to the upper anchor end by the upper traction mechanism, and the end of the prestressed cable connected to the cable threading ring plate is connected to the upper anchor head, and the other end of the prestressed cable is connected to the lower anchor head, and this process is repeated to complete the cable threading work of the prestressed cable.

[0014] Optionally, in the above-mentioned prestressed cable threading construction method for lattice towers, in the cable threading work step, the cable threading ring plate is first pulled to the lower anchor end by the lower traction mechanism, and one end of the prestressed cable is connected to the cable threading ring plate, and then the cable threading ring plate is pulled to the upper anchor end by the upper traction mechanism, and the end of the prestressed cable connected to the cable threading ring plate is connected to the cable threading ring plate in another lattice tower, and the cable threading ring plate is pulled to the lower anchor end by the lower traction mechanism of the other lattice tower, so that the two ends of the prestressed cable are respectively connected to the lower anchor heads of the two lattice towers.

[0015] Optionally, in the above-mentioned lattice tower prestressed cable threading construction method, in the cable threading work step, after the two ends of the prestressed cable are respectively connected to the lower anchor heads of the two lattice towers, the prestressed cable is cut off at the reserved position of the prestressed cable, and the cut ends of the prestressed cable are respectively connected to the upper anchor heads of the two lattice towers.

[0016] Optionally, in the above-mentioned lattice tower prestressed cable threading construction method, in the cable threading work step, when the prestressed cable is connected to the cable threading ring plate, grease is applied to the prestressed cable and the cable threading ring plate.

[0017] Optionally, in the above-mentioned lattice tower prestressed cable threading construction method, the bracket installation step also includes: fixing an upper pulley on the upper bracket, and fixing a lower pulley on the lower bracket.

[0018] A lattice tower, used in the above-mentioned lattice tower prestressed cable-threading construction method, comprising:

[0019] A tower body, comprising an upper anchor end and a lower anchor end arranged opposite to each other, wherein the tower body has an installation cavity, and the installation cavity is formed between the upper anchor end and the lower anchor end;

[0020] A cable-threading structure, comprising a cable-threading ring plate and a guide rope arranged in the installation cavity, one end of the guide rope being connected to the lower anchoring end, and the other end passing through the cable-threading ring plate and being connected to the upper anchoring end, the cable-threading ring plate being suitable for being connected to a traction mechanism, and a plurality of penetration portions being provided on the cable-threading ring plate, and the penetration portions being suitable for being connected to a prestressed cable;

[0021] Among them, the upper anchor end and the lower anchor end are respectively provided with an upper anchor head and a lower anchor head, and the upper anchor head and the lower anchor head are respectively provided with an upper connecting part and a lower connecting part, the upper connecting part and the lower connecting part are relatively arranged and are both suitable for connecting with the end of the prestressed cable, and the upper connecting part and the lower connecting part are both arranged corresponding to the through-part.

[0022] The technical solution provided by the present invention has the following advantages:

[0023] 1. The prestressed cable-threading construction method of a lattice tower provided by the present invention comprises the steps of installing a bracket, installing a cable-threading ring plate, arranging a traction mechanism and performing a cable-threading work. In the above-mentioned construction method, the upper anchor head and the lower anchor head can be respectively installed on the upper anchor end and the lower anchor end through the step of installing the bracket; the cable-threading ring plate can be moved in the lattice tower under the guidance of the guide rope through the step of installing the cable-threading ring plate; the upper traction mechanism and the lower traction mechanism can respectively pull the cable-threading ring plate to move to the upper anchor end and the lower anchor end through the first traction rope and the second traction rope through the step of arranging the traction mechanism; and the cable-threading work step can be performed so that one end of the prestressed cable can be moved to the upper anchor end or the lower anchor end under the drive of the cable-threading ring plate, and when reaching the upper anchor end or the lower anchor end, one end of the prestressed cable connected to the cable-threading ring plate can be connected to the upper anchor head or the lower anchor head, and the other end can be connected to the lower anchor head or the upper anchor head, so that the cable-threading work of the prestressed cable can be completed. Therefore, by pulling the cable ring plate through the traction mechanism to drive one end of the prestressed cable to move, the normal lifting of the prestressed cable can be ensured. Moreover, since one end of the prestressed cable is connected to the cable ring plate in advance, the prestressed cables will not be entangled with each other during the lifting process, which is beneficial to improving the cable threading construction efficiency of the prestressed cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic plan view of a lattice tower provided in an embodiment of the present invention;

[0026] Figure 2 It is a schematic plan view of a grommet plate provided in an embodiment of the present invention;

[0027] Description of reference numerals:

[0028] 1-upper anchor end; 11-upper bracket; 12-upper anchor head; 13-upper pulley;

[0029] 2-lower anchoring end; 21-lower bracket; 22-lower anchor head;

[0030] 3-through-groove plate; 31-through portion; 32-fixing portion; 33-guide portion; 4-guide rope; 5-upper traction mechanism; 51-first traction rope; 6-lower traction mechanism; 61-second traction rope; 7-prestressed rope. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] Example 1

[0036] This embodiment provides a lattice tower prestressed cable construction method, such as Figure 1 and Figure 2As shown, it includes the steps of installing the bracket, installing the cable ring plate 3, arranging the traction mechanism and performing the cable-threading work. The step of installing the bracket is to respectively arrange the upper bracket 11 and the lower bracket 21 at the upper anchor end 1 and the lower anchor end 2 of the lattice tower, and fix the upper anchor head 12 on the upper bracket 11, and fix the lower anchor head 22 on the lower bracket 21; the step of installing the cable ring plate 3 is to first install the cable ring plate 3 in the lattice tower, and then connect a plurality of guide ropes 4, whose two ends are respectively connected to the upper anchor head 12 and the lower anchor head 22, to the cable ring plate 3 to guide the cable ring plate 3; the step of arranging the traction mechanism is to install the upper anchor head 12 and the lower anchor head 22 on the upper anchor end 11, and fix the upper anchor head 1 ... An upper traction mechanism 5 is arranged on one side of the end 1, and the traction end of the upper traction mechanism 5 and the cable ring plate 3 are connected by a first traction rope 51. A lower traction mechanism 6 is arranged on one side of the lower anchor end 2, and the traction end of the lower traction mechanism 6 and the cable ring plate 3 are connected by a second traction rope 61. The cable threading work steps are as follows: firstly, one end of the prestressed cable 7 is connected to the cable ring plate 3, and then the cable ring plate 3 is pulled by the upper traction mechanism 5 and the lower traction mechanism 6 to drive one end of the prestressed cable 7 to move between the upper anchor head 12 and the lower anchor head 22, so as to connect the two ends of the prestressed cable 7 to the upper anchor head 12 and the lower anchor head 22 respectively.

[0037] The above-mentioned lattice tower prestressed cable construction method, through the step of installing the bracket, enables the upper anchor head 12 and the lower anchor head 22 to be installed on the upper anchor end 1 and the lower anchor end 2 respectively; through the step of installing the cable ring plate 3, the cable ring plate 3 can be moved in the lattice tower under the guidance of the guide rope 4; through the step of arranging the traction mechanism, the upper traction mechanism 5 and the lower traction mechanism 6 can respectively pull the cable ring plate 3 to the upper anchor end 1 and the lower anchor end 2 through the first traction rope 51 and the second traction rope 61; through the step of performing the cable threading work, one end of the prestressed cable 7 can be moved to the upper anchor end 1 or the lower anchor end 2 under the drive of the cable ring plate 3, and when reaching the upper anchor end 1 or the lower anchor end 2, the end of the prestressed cable 7 connected to the cable ring plate 3 can be connected to the upper anchor head 12 or the lower anchor head 22, and the other end can be connected to the lower anchor head 22 or the upper anchor head 12, so that the cable threading work of the prestressed cable 7 can be completed. Therefore, by pulling the cable ring plate 3 through the traction mechanism to drive one end of the prestressed cable 7 to move, it can ensure that the prestressed cable 7 is lifted normally. Moreover, since one end of the prestressed cable 7 is connected to the cable ring plate 3 in advance, the prestressed cables 7 will not be entangled with each other during the lifting process, which is beneficial to improving the cable threading construction efficiency of the prestressed cable 7.

[0038] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, after the cable threading step, the step of adjusting the cable threading ring plate 3 is also included. The step of adjusting the cable threading ring plate 3 includes: pulling the cable threading ring plate 3 to the corner position of the lattice tower through the lower traction mechanism 6 to provide prestressed deflection to the prestressed cable 7 through the cable threading ring plate 3.

[0039] The above-mentioned prestressed cable threading construction method for a lattice tower adds a step of adjusting the cable threading ring plate 3 after the cable threading step, so that the cable threading ring plate 3 can be moved to the corner position of the lattice tower under the traction of the lower traction mechanism 6. Therefore, when the prestressed cable 7 is prestressed after the cable threading work is completed, the cable threading ring plate 3 can fix the prestressed cable 7 and provide prestressed steering for the prestressed cable 7, thereby avoiding direct contact and friction between the prestressed cable 7 and the corner position of the lattice tower, which is beneficial to avoiding the prestressed cable 7 from breaking due to friction with the corner position.

[0040] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, the step of adjusting the cable ring plate 3 also includes: connecting one end of the first traction rope 51 connected to the upper traction mechanism 5 to the upper anchor head 12 , and connecting one end of the second traction rope 61 connected to the lower traction mechanism 6 to the lower anchor head 22 .

[0041] The above-mentioned prestressed cable construction method for the lattice tower, by setting the cable adjustment step, also includes connecting one end of the first traction cable 51 connected to the upper traction mechanism 5 to the upper anchor head 12 and connecting one end of the second traction cable 61 connected to the lower traction mechanism 6 to the lower anchor head 22, so that when the cable ring plate 3 is pulled to the corner position of the lattice tower by the lower traction mechanism 6, the first traction cable 51 and the second traction cable 61 can fix the cable ring plate 3 at the corner position of the lattice tower through the upper anchor head 12 and the lower anchor head 22.

[0042] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, after the step of adjusting the through-grommet plate 3, a step of removing the bracket is also included, and the step of removing the bracket includes: moving the upper anchor head 12 from the upper bracket 11 to the upper anchor end 1 and fixing it, and removing the upper bracket 11; moving the lower anchor head 22 from the lower bracket 21 to the lower anchor end 2 and fixing it, and removing the lower bracket 21.

[0043] The above-mentioned prestressed cable-threading construction method for a lattice tower adds a step of removing the bracket after the step of adjusting the cable-threading ring plate 3, so that the upper anchor head 12 and the lower anchor head 22 can be fixed on the upper anchor end 1 and the lower anchor end 2, respectively, thereby forming a whole with the lattice tower. In addition, after the upper bracket 11 and the lower bracket 21 are removed from the upper anchor end 1 and the lower anchor end 2, respectively, they can also be recycled.

[0044] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2As shown, in the cable threading work step, the cable threading ring plate 3 is first pulled to the lower anchoring end 2 by the lower traction mechanism 6, and one end of the prestressed cable 7 is connected to the cable threading ring plate 3, and then the cable threading ring plate 3 is pulled to the upper anchoring end 1 by the upper traction mechanism 5, and the end of the prestressed cable 7 connected to the cable threading ring plate 3 is connected to the upper anchor head 12, and the other end of the prestressed cable 7 is connected to the lower anchor head 22, and the cable threading work of the prestressed cable 7 can be completed by repeating this process.

[0045] The above-mentioned lattice tower prestressed cable threading construction method uses the lower traction mechanism 6 to pull the cable threading ring plate 3 to the lower anchor end 2 during the cable threading work step, and connects one end of the prestressed cable 7 to the cable threading ring plate 3, and then pulls the cable threading ring plate 3 to the upper anchor end 1 through the upper traction mechanism 5, and connects the end of the prestressed cable 7 connected to the cable threading ring plate 3 to the upper anchor head 12, and the other end of the prestressed cable 7 is connected to the lower anchor head 22, so that the cable threading work of one prestressed cable 7 can be completed, and by repeatedly performing the above-mentioned operations, the cable threading work of multiple prestressed cables 7 can be completed, and in the process of threading the prestressed cable 7, since only one prestressed cable 7 is threaded at a time, the prestressed cable 7 that has completed the cable threading work and the prestressed cable 7 that is undergoing the cable threading work will not be entangled with each other.

[0046] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, in the cable threading work step, the cable threading ring plate 3 is first pulled to the lower anchoring end 2 by the lower traction mechanism 6, and one end of the prestressed cable 7 is connected to the cable threading ring plate 3, and then the cable threading ring plate 3 is pulled to the upper anchoring end 1 by the upper traction mechanism 5, and the end of the prestressed cable 7 connected to the cable threading ring plate 3 is connected to the cable threading ring plate 3 in another lattice tower, and the cable threading ring plate 3 is pulled to the lower anchoring end 2 by the lower traction mechanism 6 of the other lattice tower, so that the two ends of the prestressed cable 7 are respectively connected to the lower anchor heads 22 of the two lattice towers.

[0047] The above-mentioned lattice tower prestressed cable construction method uses the lower traction mechanism 6 to pull the cable ring plate 3 to the lower anchor end 2 during the cable insertion work step, and connects one end of the prestressed cable 7 to the cable ring plate 3, and then pulls the cable ring plate 3 to the upper anchor end 1 through the upper traction mechanism 5, and connects the end of the prestressed cable 7 connected to the cable ring plate 3 to the cable ring plate 3 in another lattice tower, and pulls the cable ring plate 3 to the lower anchor end 2 of another lattice tower through the lower traction mechanism 6 of another lattice tower, and connects the end of the prestressed cable 7 connected to the cable ring plate 3 of another lattice tower to the lower anchor end 2 of another lattice tower, so that the two ends of the prestressed cable 7 can be connected to the lower anchor heads 22 of the two lattice towers respectively, so that the cable insertion work of the prestressed cables 7 of the two lattice towers can be completed simultaneously.

[0048] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, in the cable threading step, after the two ends of the prestressed cable 7 are respectively connected to the lower anchor heads 22 of the two lattice towers, the prestressed cable 7 is cut off at the reserved position of the prestressed cable 7, and the cut ends of the prestressed cable 7 are respectively connected to the upper anchor heads 12 of the two lattice towers.

[0049] The above-mentioned lattice tower prestressed cable threading construction method cuts off the reserved position of the prestressed cable 7 whose two ends are respectively connected to the lower anchor heads 22 of the two lattice towers during the cable threading work step, and connects the two ends of the cut prestressed cable 7 to the upper anchor heads 12 of the two lattice towers respectively, so that one prestressed cable 7 can be fixed in each of the two lattice towers, that is, the cable threading work of the prestressed cables 7 of the two lattice towers is completed at the same time.

[0050] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, during the cable threading step, when the prestressing cable 7 is connected to the cable threading eye plate 3 , lubricating grease is applied to the prestressing cable 7 and the cable threading eye plate 3 .

[0051] The above-mentioned lattice tower prestressed cable construction method uses grease to apply on the prestressed cable 7 and the cable ring plate 3 during the cable insertion work step, so that when the prestressed cable 7 and the cable ring plate 3 are connected, the grease can effectively reduce the friction between the prestressed cable 7 and the cable ring plate 3.

[0052] The lattice tower prestressed cable construction method provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, the bracket installation step also includes: fixing an upper pulley 13 on the upper bracket 11 and fixing a lower pulley on the lower bracket 21 .

[0053] The above-mentioned lattice tower prestressed cable threading construction method, through the step of setting an installation bracket, also includes fixing an upper pulley 13 on the upper bracket 11 and fixing a lower pulley on the lower bracket 21, so that when the prestressed cable 7 is threaded, the prestressed cable 7 can be guided by the upper pulley 13 and the lower pulley, thereby preventing the prestressed cable 7 from getting tangled itself during the lifting process of the prestressed cable 7.

[0054] The prestressed cable-threading construction method for a lattice tower provided by the present invention comprises the following steps: installing a bracket so that an upper anchor head 12 and a lower anchor head 22 can be respectively installed on an upper anchor end 1 and a lower anchor end 2; installing a cable-threading ring plate 3 so that the cable-threading ring plate 3 can move in the lattice tower under the guidance of a guide rope 4; arranging a traction mechanism so that an upper traction mechanism 5 and a lower traction mechanism 6 can respectively pull the cable-threading ring plate 3 to move toward an upper anchor end 1 and a lower anchor end 2 through a first traction rope 51 and a second traction rope 61; and performing a cable-threading work step so that one end of a prestressed cable 7 can be moved to an upper anchor end 1 or a lower anchor end 2 under the drive of the cable-threading ring plate 3, and when reaching the upper anchor end 1 or the lower anchor end 2, one end of the prestressed cable 7 connected to the cable-threading ring plate 3 can be connected to an upper anchor head 12 or a lower anchor head 22, and the other end thereof can be connected to a lower anchor head 22 or an upper anchor head 12, so that the cable-threading work of the prestressed cable 7 can be completed. Therefore, by pulling the cable ring plate 3 through the traction mechanism to drive one end of the prestressed cable 7 to move, it can ensure that the prestressed cable 7 is lifted normally. Moreover, since one end of the prestressed cable 7 is connected to the cable ring plate 3 in advance, the prestressed cables 7 will not be entangled with each other during the lifting process, which is beneficial to improving the cable threading construction efficiency of the prestressed cable 7.

[0055] Example 2

[0056] This embodiment provides a lattice tower, such as Figure 1 and Figure 2 As shown, the above-mentioned prestressed cable-threading construction method for the lattice tower includes a tower body and a cable-threading structure, the tower body includes an upper anchoring end 1 and a lower anchoring end 2 arranged oppositely, the tower body has an installation cavity, and the installation cavity is formed between the upper anchoring end 1 and the lower anchoring end 2; the cable-threading structure includes a cable-threading ring plate 3 and a guide rope 4 arranged in the installation cavity, one end of the guide rope 4 is connected to the lower anchoring end 2, and the other end passes through the cable-threading ring plate 3 and is connected to the upper anchoring end 1, the cable-threading ring plate 3 is suitable for connecting to a traction mechanism, and the cable-threading ring plate 3 is provided with a plurality of penetration portions 31, and the penetration portions 31 are suitable for connecting to the prestressed cable 7; wherein, an upper anchor head 12 and a lower anchor head 22 are respectively provided on the upper anchoring end 1 and the lower anchor head 22 are respectively provided with an upper connecting portion and a lower connecting portion, the upper connecting portion and the lower connecting portion are relatively arranged and are both suitable for connecting to the end of the prestressed cable 7, and the upper connecting portion and the lower connecting portion are both arranged corresponding to the penetration portion 31.

[0057] The lattice tower of the above structure has a cable-threading structure arranged in the tower body, and the tower body includes an upper anchoring end 1 and a lower anchoring end 2 arranged relatively to each other, and an installation cavity formed between the upper anchoring end 1 and the lower anchoring end 2, wherein the upper anchoring end 1 and the lower anchoring end 2 are respectively provided with an upper anchor head 12 and a lower anchor head 22, and the upper anchor head 12 and the lower anchor head 22 are respectively provided with an upper connecting portion and a lower connecting portion, which are respectively an upper connecting hole and a lower connecting hole in the present embodiment, and the upper connecting portion and the lower connecting portion are arranged relatively to each other and can be connected to one end of the prestressed cable 7, and the cable-threading structure specifically includes a cable-threading ring plate 3 and a guide rope 4 arranged in the installation cavity, wherein one end of the guide rope 4 is connected to the lower anchoring end 2, and the other end passes through the cable-threading ring plate 3 and is connected to the upper anchoring end 1, and the cable-threading ring plate 3 is connected to the traction mechanism, so that under the traction of the traction mechanism, the cable-threading ring plate 3 can move in the installation cavity under the guiding action of the guide rope 4.

[0058] In addition, a plurality of through-portions 31 are provided on the through-portion ring plate 3. The through-portions 31 are through-holes in the present embodiment. The through-portions 31 are correspondingly arranged with the upper connecting portion and the lower connecting portion, and each through-portion 31 can be connected with one end of the prestressed cable 7. Thus, when the through-portion ring plate 3 moves in the installation cavity, the end of the prestressed cable 7 connected with the through-portion ring plate 3 can be synchronously moved in the installation cavity driven by the through-portion ring plate 3. When the through-portion ring plate 3 moves to the upper anchoring end 1, the end of the prestressed cable 7 connected with the through-portion ring plate 3 can be connected with the upper connecting portion, and the other end can be connected with the lower connecting portion. In this way, the threading of the prestressed cable 7 can be completed. Since the upper connecting portion, the lower connecting portion and the through-portion 31 are correspondingly arranged, when the prestressed cable 7 is lifted, the prestressed cables 7 will not be entangled with each other.

[0059] Specifically, Figure 2 As shown, a fixing portion 32 and a guide portion 33 are also provided on the grommet plate 3. The fixing portion 32 and the guide portion 33 are respectively a fixing hole and a guide hole in the present embodiment, wherein the fixing portion 32 can be connected to the first traction rope 51 and the second traction rope 61, so that the grommet plate 3 can move in the installation cavity under the traction of the traction mechanism, and the guide portion 33 can be connected to the guide rope 4, so that the guide rope 4 can guide the grommet plate 3.

[0060] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A lattice tower prestressed cable construction method, characterized in that: The construction steps include: Mounting brackets: an upper bracket (11) and a lower bracket (21) are respectively arranged at the upper anchor end (1) and the lower anchor end (2) of the lattice tower, and an upper anchor head (12) is fixed to the upper bracket (11), and a lower anchor head (22) is fixed to the lower bracket (21); Installing the grommet plate (3): first installing the grommet plate (3) in the lattice tower, and then connecting a plurality of guide ropes (4) whose two ends are respectively connected to the upper anchor head (12) and the lower anchor head (22) to the grommet plate (3) to guide the grommet plate (3); Arranging a traction mechanism: arranging an upper traction mechanism (5) on one side of the upper anchoring end (1), and connecting the traction end of the upper traction mechanism (5) and the grommet ring plate (3) via a first traction rope (51); arranging a lower traction mechanism (6) on one side of the lower anchoring end (2), and connecting the traction end of the lower traction mechanism (6) and the grommet ring plate (3) via a second traction rope (61); The cable threading operation is performed by first connecting one end of the prestressed cable (7) to the cable threading ring plate (3), and then pulling the cable threading ring plate (3) through the upper pulling mechanism (5) and the lower pulling mechanism (6) to drive one end of the prestressed cable (7) to move between the upper anchor head (12) and the lower anchor head (22), so that the two ends of the prestressed cable (7) are connected to the upper anchor head (12) and the lower anchor head (22) respectively; After the cable threading step, a step of adjusting the cable threading ring plate (3) is also included, and the step of adjusting the cable threading ring plate (3) includes: pulling the cable threading ring plate (3) to the corner position of the lattice tower through the lower pulling mechanism (6), so as to provide prestressed deflection for the prestressed cable (7) through the cable threading ring plate (3).

2. The lattice tower prestressed cable construction method according to claim 1, characterized in that: The step of adjusting the cable ring plate (3) further comprises: connecting one end of the first traction rope (51) connected to the upper traction mechanism (5) to the upper anchor head (12), and connecting one end of the second traction rope (61) connected to the lower traction mechanism (6) to the lower anchor head (22).

3. The lattice tower prestressed cable construction method according to claim 2, characterized in that: After the step of adjusting the grommet plate (3), a step of removing the bracket is also included, and the step of removing the bracket includes: moving the upper anchor head (12) from the upper bracket (11) to the upper anchor end (1) and fixing it, and removing the upper bracket (11); moving the lower anchor head (22) from the lower bracket (21) to the lower anchor end (2) and fixing it, and removing the lower bracket (21).

4. The lattice tower prestressed cable construction method according to claim 1, characterized in that: In the cable threading step, the cable threading ring plate (3) is first pulled to the lower anchor end (2) by the lower pulling mechanism (6), and one end of the prestressed cable (7) is connected to the cable threading ring plate (3), and then the cable threading ring plate (3) is pulled to the upper anchor end (1) by the upper pulling mechanism (5), and the end of the prestressed cable (7) connected to the cable threading ring plate (3) is connected to the upper anchor head (12), and the other end of the prestressed cable (7) is connected to the lower anchor head (22), and the cable threading work of the prestressed cable (7) can be completed by repeating this process.

5. The lattice tower prestressed cable construction method according to claim 1, characterized in that: In the cable threading step, the cable threading ring plate (3) is first pulled to the lower anchor end (2) by the lower pulling mechanism (6), and one end of the prestressed cable (7) is connected to the cable threading ring plate (3), and then the cable threading ring plate (3) is pulled to the upper anchor end (1) by the upper pulling mechanism (5), and the end of the prestressed cable (7) connected to the cable threading ring plate (3) is connected to the cable threading ring plate (3) in another lattice tower, and the cable threading ring plate (3) is pulled to the lower anchor end (2) by the lower pulling mechanism (6) of the other lattice tower, so that the two ends of the prestressed cable (7) are respectively connected to the lower anchor heads (22) of the two lattice towers.

6. The lattice tower prestressed cable construction method according to claim 5, characterized in that: In the cable threading step, after the two ends of the prestressed cable (7) are respectively connected to the lower anchor heads (22) of the two lattice towers, the prestressed cable (7) is cut off at the reserved position of the prestressed cable (7), and the cut ends of the prestressed cable (7) are respectively connected to the upper anchor heads (12) of the two lattice towers.

7. The lattice tower prestressed cable construction method according to claim 6, characterized in that: In the cable threading step, when the prestressed cable (7) is connected to the cable threading ring plate (3), lubricating grease is applied to the prestressed cable (7) and the cable threading ring plate (3).

8. The lattice tower prestressed cable construction method according to claim 1, characterized in that: The step of installing the bracket also includes: fixing an upper pulley (13) on the upper bracket (11) and fixing a lower pulley on the lower bracket (21).

9. A lattice tower, using the lattice tower prestressed cable construction method according to any one of claims 1 to 8, characterized in that: include: A tower body, comprising an upper anchor end (1) and a lower anchor end (2) arranged opposite to each other, the tower body having a mounting cavity, the mounting cavity being formed between the upper anchor end (1) and the lower anchor end (2); A cable-threading structure, comprising a cable-threading ring plate (3) and a guide rope (4) arranged in the installation cavity, one end of the guide rope (4) being connected to the lower anchor end (2), and the other end of the guide rope (4) passing through the cable-threading ring plate (3) and connected to the upper anchor end (1), the cable-threading ring plate (3) being suitable for being connected to a traction mechanism, and a plurality of penetration portions (31) being provided on the cable-threading ring plate (3), and the penetration portions (31) being suitable for being connected to a prestressed cable (7); The upper anchor end (1) and the lower anchor end (2) are respectively provided with an upper anchor head (12) and a lower anchor head (22); the upper anchor head (12) and the lower anchor head (22) are respectively provided with an upper connecting portion and a lower connecting portion; the upper connecting portion and the lower connecting portion are arranged opposite to each other and are both suitable for connecting to the end of the prestressed cable (7); the upper connecting portion and the lower connecting portion are both arranged corresponding to the through-portion (31).

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