Self-locking type self-tensioning photovoltaic support system

Abstract

The invention discloses a self-locking type self-tensioning photovoltaic support system which comprises two sets of self-locking type self-tensioning mechanisms which are arranged at the connecting positions of two side piles and a net rack beam respectively, and each set of self-locking type self-tensioning mechanism comprises a bracket, a rigid supporting arm, a fixed arm, a rotating arm and a cable force distribution piece. The bracket is arranged on the outer wall of the end part of each side pile; the bottom ends of the rigid supporting arms are pivoted to the brackets of the corresponding side piles; the fixed arm is fixed on the outer wall of the top of the net rack beam; the two ends of the rotating arm are arranged to be a pivoting end and a sliding end respectively, the bottom, close to the pivoting end, of the rotating arm protrudes downwards to form a tensioning end, the rotating arm is pivoted to the fixed arm through the pivoting end, and the rotating arm is in sliding connection with the free end of the rigid supporting arm through the sliding end; the cable force distribution part is detachably fixed to the tensioning end of the rotating arm. Compared with the technical scheme adopted at present, another technical scheme is provided to stabilize the upper inhaul cable and the lower inhaul cable, the stability requirement is met, and the manufacturing cost is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the field of new energy photovoltaic, and particularly relates to a self-locking and self-tensioning photovoltaic support system. Background Art

[0002] In the fishing-light complementary photovoltaic project, flexible photovoltaic supports are mostly used, which can increase the structural spanning span, increase the available space on the water surface, and reduce the number of pile foundations. The upper cable of the flexible photovoltaic support is generally anchored to the lower foundation, and this anchoring foundation usually adopts the form of an anchor pier or an anchor pile to maintain the tension of the cable. When using anchor piles for anchoring, the number of anchor piles is large, and the overall cost of the project will be relatively high, and it may not necessarily have an advantage over the conventional rigid cantilever support economically. When using a gravity-type anchor pier, due to the generally thick silt or soft soil at the bottom of the water, if the foundation treatment is not carried out, the anchor pier will continuously settle during use, resulting in a huge additional tension in the flexible cable and damaging the upper structure; if the foundation treatment is carried out, the engineering quantity is large, which will also lead to poor economic benefits of the whole project.

[0003] In short, at present, in order to achieve stability, a technical solution of increasing the number of more anchor piers or anchor piles in the lower anchoring foundation is adopted, which pushes up the cost. Summary of the Invention

[0004] Aiming at the above problems, the purpose of the present invention is to provide a self-locking and self-tensioning photovoltaic support system, which is used to solve the problem that the cost is pushed up by adopting the technical solution of increasing the number of more anchor piers or anchor piles in the lower anchoring foundation in order to achieve stability at present.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present invention discloses a self-locking and self-tensioning photovoltaic support system, which is arranged in a water area and includes two side piles. A grid beam is arranged between the two side piles. A side pile support is arranged between the top ends of the grid beam and the side piles. The upper surface of the grid beam is provided with a photovoltaic panel. A lower cable is penetrated through the bottom of the grid beam. The two sides of the upper part of the grid beam are respectively penetrated through a left upper cable and a right upper cable. It is characterized in that it further includes two sets of self-locking and self-tensioning mechanisms, which are respectively arranged at the connection between the two side piles and the grid beam. Each set of the self-locking and self-tensioning mechanism includes

[0007] A bracket, which is arranged on the outer wall of the end of each side pile;

[0008] A rigid arm, the bottom end of which is pivotally connected to the bracket of the corresponding side pile;

[0009] A fixed arm, which is fixed on the outer wall of the top of the grid beam;

[0010] A rotating arm, with its two ends respectively set as a pivoting end and a sliding end. At the bottom near the pivoting end, it bulges downward and droops to form a tensioning end. The rotating arm is pivotally connected to the fixed arm through the pivoting end, and the rotating arm is slidably connected to the free end of the rigid support arm through the sliding end;

[0011] A cable force distribution member, inside which there is an upper cable channel. The ends of the upper left cable and the upper right cable pass through and wind inside the upper cable channel of the cable force distribution member. The cable force distribution member is detachably fixed on the tensioning end of the rotating arm;

[0012] Both ends of the lower cable are respectively arranged on the pile cap supports of two side piles.

[0013] Preferably, each set of the self-locking self-tensioning mechanism further includes a lower tensioning cable,

[0014] The end of the lower cable is arranged on the pile cap support, and the pile cap support is connected to the middle part of the rigid support arm through the lower tensioning cable,

[0015] Both ends of the lower cable are respectively connected to the middle parts of the corresponding rigid support arms through their respective lower tensioning cables. The two ends of the lower cable are respectively connected to the upper left cable and the upper right cable through the lower tensioning cables, the rigid support arms, and the rotating arm in sequence, jointly forming a closed self-locking self-tensioning system.

[0016] Preferably, a first pivot shaft is provided on the top surface of the outer end of the corbel. The bottom end of the rigid support arm is pivotally connected to the top surface of the outer end of the corbel through the first pivot shaft;

[0017] A second pivot shaft is provided at the outer end of the fixed arm. The pivoting end of the rotating arm is pivotally connected to the outer end of the fixed arm through the second pivot shaft;

[0018] An inclined sliding groove surface is provided on the inner side of the free end of the rigid support arm. The sliding end of the rotating arm extends into and abuts against the inclined sliding groove surface of the free end of the rigid support arm, thereby realizing the sliding connection between the two.

[0019] Preferably, the length of the sliding end of the rotating arm is respectively greater than the length of the pivoting end and the length of the tensioning end,

[0020] Under the triple actions of the rotation of the rotating arm at the pivoting end, the tensioning of the tensioning end, and the extrusion of the sliding end, the rotating arm fluctuates up and down in a horizontal state or around a horizontal state.

[0021] Preferably, the upper cable channel inside the cable force distribution member extends outward to form an inlet and an outlet of the upper cable channel;

[0022] The upper part of the grid beam includes several groups of left cable nodes and right cable nodes. The left cable nodes and the right cable nodes appear in pairs and form a group. The upper left cable passes through the left cable nodes of each group, and the upper right cable passes through the right cable nodes of each group. The ends of the upper left cable and the upper right cable at the same end respectively penetrate into the inlet and outlet of the cable force distribution part of the self-locking and self-tensioning mechanism corresponding to them, and merge into one inside the cable force distribution part. The two ends of the upper left cable and the upper right cable merge into one inside the cable force distribution parts of the self-locking and self-tensioning mechanisms of two side piles respectively, thereby forming an upper cable from the upper left cable and the upper right cable;

[0023] The cable force distribution part is configured with an upper tension cable, and the upper tension cable is fixedly connected to the corresponding upper cable inside the cable force distribution part. The cable force distribution part is inserted on the tension end of the rotating arm through the upper tension cable.

[0024] Preferably, the cable force distribution part includes a box body. At both ends inside the box body, a left pulley and a right pulley are respectively arranged.

[0025] The gap between the left pulley and the right pulley and the inner wall of the box body forms an upper cable channel. The inlet and outlet of the upper cable channel are respectively arranged at both ends of the box body;

[0026] The upper left cable penetrates into the inlet of the upper cable channel of the box body and bypasses the left pulley. The upper right cable 23 penetrates into the outlet of the upper cable channel of the box body and bypasses the right pulley. The upper left cable and the upper right cable merge into one inside the box body to form an upper cable.

[0027] Preferably, an upper tension cable clamp is arranged in the middle of the outer wall of the box body, and the upper tension cable clamp is used to clamp the upper tension cable.

[0028] Preferably, the cable force distribution part further includes an anchor. The anchor is fixed at the end of the tension end of the rotating arm. The anchor is matched with the upper tension cable and is used to clamp the upper tension cable.

[0029] Preferably, the box body is sequentially formed by butt-jointing an upper cover plate, a lower bottom plate, a back plate and a sealing plate;

[0030] A back plate stiffening plate is further arranged on the back plate, and the tension cable clamp is fixedly connected to the back plate stiffening plate;

[0031] The left pulley and the right pulley are symmetrical about the center line of the box body;

[0032] Both the left pulley and the right pulley are configured with pulley bearings.

[0033] Preferably, the side pile bearing includes a steel ball and a rubber bearing, and the steel ball and the rubber bearing are respectively located at the upper and lower parts of the side pile bearing;

[0034] A lead hole is arranged in the steel ball of the side pile bearing, a lead hole steel pipe is fixed in the lead hole, and an anchor is arranged in the lead hole steel pipe;

[0035] The lower part of the grid beam includes a plurality of lower cable pull nodes, the lower cable passes through the plurality of lower cable pull nodes, and both ends of the lower cable respectively pass through the lead hole steel pipes in the steel balls of the side pile bearings of two side piles and are fixed on the anchors;

[0036] A lower tensioning cable clamp is arranged outside the steel ball of the side pile bearing, the lower tensioning cable passes through the lower tensioning cable clamp and is connected to the lower cable, and can be clamped by the lower tensioning cable clamp.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] (1) The present invention discloses a self-locking and self-tensioning photovoltaic support system, which is arranged in a water area and includes two sets of self-locking and self-tensioning mechanisms, which are respectively arranged at the connection parts of two side piles and the grid beam. Each set of self-locking and self-tensioning mechanisms includes a bracket, a rigid support arm, a fixed arm, a rotating arm, a cable force distribution member and a lower tensioning cable. The bracket is arranged on the outer wall of the end of each side pile; the bottom end of the rigid support arm is pivotally connected to the bracket of the corresponding side pile; the fixed arm is fixed on the outer wall of the top of the grid beam; both ends of the rotating arm are respectively set as a pivot end and a sliding end, and a tensioning end is formed by protruding and drooping downward at the bottom near the pivot end. The rotating arm is pivotally connected to the fixed arm through the pivot end, and the rotating arm is slidably connected to the free end of the rigid support arm through the sliding end; an upper cable channel is arranged inside the cable force distribution member, and the ends of the upper left cable and the upper right cable pass through and wind in the upper cable channel of the cable force distribution member. The cable force distribution member is detachably fixed on the tensioning end of the rotating arm; both ends of the lower cable are respectively arranged on the side pile bearings of two side piles, and the ends of the lower cable are arranged on the side pile bearings, and the side pile bearing is connected to the middle part of the rigid support arm through the lower tensioning cable. Both ends of the lower cable are respectively connected to the middle parts of the corresponding rigid support arms through their respective lower tensioning cables, and both ends of the lower cable are respectively connected to the upper left cable and the upper right cable through the lower tensioning cable, the rigid support arm and the rotating arm in sequence, jointly forming a closed self-locking and self-tensioning system. Compared with the prior art solution of increasing the number of more anchor piers or anchor piles in the lower anchoring foundation, the self-locking and self-tensioning photovoltaic support system disclosed by the present invention provides a completely different technical solution to stabilize the upper cable and the lower cable, which can not only meet the stability requirements, but also significantly reduce the cost, and solve the problems of large foundation engineering quantity, large ground treatment engineering quantity and dragging down the project economy caused by the foundation anchoring of the prestressed flexible cable.

[0039] (2) The present invention discloses a self-locking and self-tensioning photovoltaic support system, which is used for photovoltaic projects of complementary fishing and photovoltaic, reduces the engineering quantity of anchor pier foundations of flexible cables, and reduces the structural cost. It realizes that the upper flexible cable can maintain a large tension force and self-balance without the lower foundation anchorage, can save a large amount of foundation engineering quantity, greatly reduce the engineering quantity of water pile foundation construction and foundation treatment engineering quantity, and reduce the civil engineering structure cost.

[0040] (3) The present invention discloses a self-locking and self-tensioning photovoltaic support system, which establishes a self-locking and self-tensioning system of flexible cables under the condition of no lower anchorage foundation, avoids the relaxation of the unilateral stressed cable under the action of upwind or downwind loads, increases the structural stiffness, and improves the stability of the whole structure;

[0041] (4) The present invention discloses a self-locking and self-tensioning photovoltaic support system, which adopts a cable force distribution component to distribute internal forces to the upper stabilizing cables, so that each stabilizing cable maintains uniform internal force distribution and joint force under any working condition, avoids the damage of individual cables or local members due to internal force concentration, and ensures the structural safety.

[0042] (5) The present invention discloses a self-locking and self-tensioning photovoltaic support system, which can significantly reduce the foundation engineering quantity and reduce the investment cost of the whole structure without increasing or increasing little the steel consumption of the upper structure, and has important significance for the photovoltaic industry of complementary fishing and photovoltaic. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a front elevation structure schematic diagram of a self-locking and self-tensioning photovoltaic support system of the existing conventional practice provided by the prior art;

[0044] Figure 2 It is a front elevation structure schematic diagram of the self-locking and self-tensioning photovoltaic support system provided in Embodiment 1 of the present invention;

[0045] Figure 3 It is Figure 2 The partial enlarged view at I in

[0046] Figure 4 It is Figure 3 The further enlarged cross-sectional view of the end of the side pile shown in

[0047] Figure 5 It is the top view of the end of the side pile provided in Embodiment 1 of the present invention;

[0048] Figure 6 It is the top view of the cable force distribution component in the working state provided in Embodiment 1 of the present invention;

[0049] Figure 7 It is Figure 6The sectional view taken along the A-A direction therein;

[0050] Figure 8 It is a schematic longitudinal sectional view when the side pile support provided in Embodiment 1 of the present invention works.

[0051] Explanation of reference numerals: 1-side pile, 11-anchor pier, 12-middle pile, 13-side pile support, 130-square pyramid member, 131-leading hole steel pipe, 132-anchor, 133-lower tensioning cable clamp; 14-middle pile support;

[0052] 2-grid beam, 21-lower cable, 22-upper left cable, 23-upper right cable, 24-photovoltaic panel;

[0053] 3-self-locking and self-tensioning mechanism,

[0054] 30-bracket,

[0055] 31-rigid support arm, 310-first pivot, 311-inclined sliding groove surface;

[0056] 32-fixed arm, 320-second pivot;

[0057] 33-rotating arm, 331-pivoting end, 332-sliding end, 333-tensioning end;

[0058] 34-cable force distribution member, 340-box body, 3401-upper cover plate, 3402-lower bottom plate, 3403-back plate, 3404-sealing plate, 3405-back plate stiffening plate; 341-upper tensioning cable, 342-anchorage, 343-left pulley, 344-right pulley, 345-upper tensioning cable clamp; 3406-pulley bearing;

[0059] 35-lower tensioning cable. Detailed implementation manners

[0060] Hereinafter, the exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0061] Inventive concept: In order to solve the problem that the current technical solution of increasing the number of anchor piers or anchor piles in the lower anchoring foundation to achieve stability has pushed up the cost, compared with the current technical solution of increasing the number of anchor piers or anchor piles in the lower anchoring foundation, the self-locking and self-tensioning photovoltaic support system disclosed in the present invention provides a completely different technical solution to stabilize the upper stay cable and the lower stay cable, which can not only meet the stability requirements, but also significantly reduce the cost, and solve the problems that the pre-stressed flexible stay cable relies on foundation anchoring, resulting in large foundation engineering quantity, large foundation treatment engineering quantity and dragging down the project economy.

[0062] Prior art: The photovoltaic support system of the existing conventional practice

[0063] The prior art provides a photovoltaic support system of the existing conventional practice, and its structure will be described in detail below with reference to the accompanying drawings.

[0064] Reference Figure 1 , the photovoltaic support system of the existing conventional practice is arranged in a water area, including two side piles 1, a combined beam is arranged between the two side piles 1, and an anchor pier 11 or an anchor pile is respectively configured outside each side pile 1.

[0065] The combined beam includes a grid beam 2, a lower stay cable 21, an upper left stay cable 22 and an upper right stay cable 23.

[0066] Both ends of the grid beam 2 are respectively arranged on the two side piles 1.

[0067] The upper part of the grid beam 2 includes several groups of left stay cable nodes and right stay cable nodes, and the left stay cable nodes and the right stay cable nodes appear in pairs to form a group. The upper left stay cable 22 passes through several groups of left stay cable nodes, and both ends are respectively fixed on the anchor piers 11 or anchor piles near the two side piles 1. The upper right stay cable 23 passes through several groups of right stay cable nodes, and both ends are respectively fixed on the anchor piers 11 or anchor piles near the two side piles 1.

[0068] The lower part of the grid beam 2 includes several lower stay cable nodes, and the lower stay cable 21 passes through several lower stay cable nodes, and both ends are respectively fixed on the anchor piers 11 or anchor piles near the two side piles 1.

[0069] A photovoltaic panel 24 is arranged on the upper surface of the grid beam 2 for photovoltaic power generation of fishery-solar complementary.

[0070] Specifically, the grid beam 2 is a unidirectional grid beam.

[0071] Further, at least one middle pile 12 is arranged between the two side piles 1.

[0072] When one middle pile 12 is arranged between the two side piles 1, a two-span grid beam 2 is formed, and the inner ends of the two-span grid beam 2 are arranged on the middle pile 12 and the outer ends are respectively arranged on the side piles 1.

[0073] When there are multiple intermediate piles 12 arranged between two side piles 1 to form a multi-span grid beam 2, and the ends of the grid beam 2 in the middle span and the inner ends of the grid beam 2 in the outer spans are arranged on the intermediate piles 12, and the outer ends of the grid beam 2 in the outer spans are arranged on the side piles 1.

[0074] Specifically, the bottoms of the two side piles 1 and the intermediate piles 12 respectively extend below the mud line in the water area, and the anchor piers 11 are buried below the mud line or the anchor piles extend below the mud line.

[0075] Specifically, both ends of the grid beam 2 are respectively arranged on the two side piles 1, and the grid beam 2 and the upper left stay cable 22, the upper right stay cable 23 and the lower stay cable 21 on it together form a composite beam.

[0076] Among them, the upper left stay cable 22 and the upper right stay cable 23 are used as stabilizing cables, and the lower stay cable 21 is used as a load-bearing cable.

[0077] Specifically, a side pile support 13 is arranged at the connection between the grid beam 2 and the top of the side pile 1;

[0078] A middle pile support 14 is arranged at the connection between the grid beam 2 and the top of the middle pile 12.

[0079] An inverted square pyramid member 130 is arranged at the connection of each span of the grid beam 2 with the side pile support 13. Specifically, the inverted square pyramid member 130 is connected upward to the upper grid beam 2 through 4 rods and downward to the side pile support 13.

[0080] Similarly, an inverted square pyramid 130 is arranged at the connection of each span of the grid beam 2 with the middle pile support 14. A plurality of inverted square pyramids 130 are arranged at equal intervals in the middle part of the grid beam 2.

[0081] The lower stay cable 21 passes through the side pile support 13 and the lead hole of the square pyramid, and is connected to the grid beam 2 to form a composite beam, becoming the lower edge load-bearing cable of the composite beam.

[0082] Embodiment 1: A self-locking and self-tensioning photovoltaic support system

[0083] Embodiment 1 of the present invention provides a self-locking and self-tensioning photovoltaic support system, which improves the existing conventional self-locking and self-tensioning photovoltaic support system provided by the prior art. The improvement lies in: using a self-locking and self-tensioning mechanism 3 to replace the original anchor pier 11 or anchor pile. First, the self-locking and self-tensioning mechanism 3 is arranged on the outer wall of the end of the side pile 1 through a bracket 30, and then the lower stay cable 21, the upper left stay cable 22 and the upper right stay cable 23 are respectively fixed on the self-locking and self-tensioning mechanism 3. The following describes this improvement in detail with reference to the accompanying drawings.

[0084] Reference Figure 2, this self-locking and self-tensioning photovoltaic support system is also installed in a water area, including two side piles 1. A combined beam is arranged between the two side piles 1. The combined beam includes a grid beam 2. An end pile support 13 is arranged between the top of the grid beam 2 and the top of the side pile 1 as a connecting member between the end of the grid beam 2 and the top of the side pile 1. A photovoltaic panel 24 is arranged on the upper surface of the grid beam 2 as a device for photovoltaic power generation in the complementary fishery and photovoltaic system. Compared with the self-locking and self-tensioning photovoltaic support system provided by the existing conventional practice in the prior art, the improvement lies in: a self-locking and self-tensioning mechanism 3 is respectively arranged at the connection between the two side piles 1 and the grid beam 2,

[0085] Reference Figures 3 to 5 , each set of self-locking and self-tensioning mechanism 3 includes

[0086] a bracket 30, arranged on the outer wall of the end of each side pile 1;

[0087] a rigid arm 31, the bottom end of which is pivotally connected to the bracket 30 of the corresponding side pile 1;

[0088] a fixed arm 32, fixed on the outer wall of the top of the grid beam 2;

[0089] a rotating arm 33, the two ends of which are respectively set as a pivoting end 331 and a sliding end 332. A tensioning end 333 is formed by downward protrusion and drooping at the bottom near the pivoting end 331. The rotating arm 33 is pivotally connected to the fixed arm 32 through the pivoting end 331, and the rotating arm 33 is slidably connected to the free end of the rigid arm 31 through the sliding end 332;

[0090] a cable force distribution member 34, with an upper cable channel arranged inside. The ends of the left upper cable 22 and the right upper cable 23 pass through and wind around in the upper cable channel of the cable force distribution member 34. The cable force distribution member 34 is detachably fixed on the tensioning end 333 of the rotating arm 33;

[0091] The two ends of the lower cable 21 are respectively arranged on the end pile supports 13 of the two side piles 1.

[0092] In order to improve the internal stability of each set of the self-locking and self-tensioning mechanism 3, it is necessary to connect the lower cable 21, the left upper cable 22 and the right upper cable 23 into one body. For this reason, each set of the self-locking and self-tensioning mechanism 3 further includes a lower tensioning cable 35,

[0093] The end of the lower cable 21 is arranged on the end pile support 13, and the end pile support 13 is connected to the middle part of the rigid arm 31 through the lower tensioning cable 35,

[0094] Both ends of the lower stay cable 21 are respectively connected to the middle part of the corresponding rigid arm 31 through their respective lower tension cables 35. The two ends of the lower stay cable 21 are successively connected to the upper left stay cable 22 and the upper right stay cable 23 through the lower tension cable 35, the rigid arm 31, and the rotating arm 33. The lower stay cable 21, the upper left stay cable 22, the upper right stay cable 23, and the self-locking self-tensioning mechanisms 3 at both ends together form a closed self-locking self-tensioning system.

[0095] Specifically, one end of the lower tension cable 35 is fixed to the side pile support 13, and the other end passes through the side pile support 13 and is butt-jointed with the end of the lower stay cable 21.

[0096] As a specific implementation manner, a first pivot 310 is provided on the top surface of the outer end of the corbel 30. The bottom end of the rigid arm 31 is pivotally connected to the top surface of the outer end of the corbel 30 through the first pivot 310;

[0097] A second pivot 320 is provided at the outer end of the fixed arm 32. The pivoting end 331 of the rotating arm 33 is pivotally connected to the outer end of the fixed arm 32 through the second pivot 320;

[0098] An inclined sliding groove surface 311 is provided on the inner side of the free end of the rigid arm 31. The sliding end 332 of the rotating arm 33 extends into and abuts against the inclined sliding groove surface 311 of the free end of the rigid arm 31, thereby realizing the sliding connection between the two.

[0099] Since the rotating arm 33 can rotate relative to the fixed arm 32 during the process of rotating around the second pivot 320, the tensioning end 333 of the rotating arm 33 is subjected to tension, and the inclined sliding groove surface 311 of the rigid arm 31 will exert extrusion on the sliding end 332 of the rotating arm 33. Therefore, under the triple actions of the rotation of the pivoting end 331, the tensioning of the tensioning end 333, and the extrusion of the sliding end 332 of the rotating arm 33, the rotating arm 33 fluctuates up and down in a horizontal state or around a horizontal state. Therefore, preferably, the length of the sliding end 332 of the rotating arm 33 is greater than the lengths of the pivoting end 331 and the tensioning end 333 respectively.

[0100] More specifically, the upper stay cable channel inside the cable force distribution member 34 extends outward to form an inlet and an outlet of the upper stay cable channel. Preferably, the inlet and the outlet of the upper stay cable channel are symmetric about the center line in the length direction of the rotating arm 33;

[0101] The upper part of the grid beam 2 includes several groups of left cable nodes and right cable nodes. The left cable nodes and the right cable nodes appear in pairs and form a group. The upper left cable 22 passes through the left cable nodes of each group, and the upper right cable 23 passes through the right cable nodes of each group. The ends of the same side of the upper left cable 22 and the upper right cable 23 respectively penetrate into the inlet and outlet of the cable force distribution member 34 of the corresponding self-locking and self-tensioning mechanism 3, and merge into one inside the cable force distribution member 34. The two ends of the upper left cable 22 and the upper right cable 23 respectively merge into one inside the cable force distribution member 34 of the self-locking and self-tensioning mechanism 3 of the two side piles 1, thereby forming an upper cable from the upper left cable 22 and the upper right cable 23;

[0102] The cable force distribution member 34 is provided with an upper tension cable 341, and the upper tension cable 341 is fixedly connected to the corresponding upper cable inside the cable force distribution member 34. The cable force distribution member 34 is inserted on the tension end 333 of the rotating arm 33 through the upper tension cable 341.

[0103] As a specific implementation manner, referring to Figure 6 and Figure 7 , the cable force distribution member 34 includes a box body 340. At both ends inside the box body 340, a left pulley 343 and a right pulley 344 are respectively arranged. The gap between the left pulley 343 and the right pulley 344 and the inner wall of the box body 340 constitutes an upper cable channel. The inlet and outlet of the upper cable channel are respectively arranged at both ends of the box body 340.

[0104] The upper left cable 22 penetrates into the inlet of the upper cable channel of the box body 340 and bypasses the left pulley 343. The upper right cable 23 penetrates into the outlet of the upper cable channel of the box body 340 and bypasses the right pulley 344. The upper left cable 22 and the upper right cable 23 merge into one inside the box body 340 to form an upper cable.

[0105] Since the upper left cable 22 and the upper right cable 23 are respectively connected together after passing through the left pulley 343 and the right pulley 344, under any load condition, the stress conditions of the upper left cable 22 and the upper right cable 23 on both sides of the top surface of the grid beam 2 always remain the same, and there will be no situation where one has a very large internal force and the other has a very small internal force, nor will there be a situation where one is over-tensioned and the other is slack.

[0106] Preferably, in order to facilitate tensioning, the upper tension cable 341 is exposed outside the cable force distribution member 34. When the upper tension cable 341 is pulled outwards, tensioning of the upper cable can be formed.

[0107] Among them, the upper tension cable 341 and the lower tension cable 35 respectively form tension ends.

[0108] When the upper tension cable 341 is tensioned, prestress is provided for the upper left cable 22 and the upper right cable 23 simultaneously.

[0109] When the lower tension cable 35 is tensioned, prestress is provided for the lower cable 21.

[0110] In order to clamp the upper tension cable 341, the cable force distribution member 34 further includes an anchor 342 which is fixed to the end of the tensioning end 333 of the rotating arm 33. The anchor 342 is matched with the upper tension cable 341 for clamping the upper tension cable 341.

[0111] When the upper tension cable 341 is inserted into the anchor 342, the upper tension cable 341 is fixed within the anchor 342.

[0112] As a specific example of arranging the upper tension cable 341 on the box body 340, an upper tension cable clamp 345 is provided in the middle of the outer wall of the box body 340, and the upper tension cable clamp 345 is used for clamping the upper tension cable 341.

[0113] Specifically, the box body 340 is surrounded by an upper cover plate 3401, a lower bottom plate 3402, a back plate 3403 and a sealing plate 3404 which are butt-jointed in sequence. In order to enhance the stability of the tension cable clamp 345, a back plate stiffening plate 3405 is further provided on the back plate 3403, and the tension cable clamp 345 is fixedly connected with the back plate stiffening plate 3405.

[0114] Preferably, the left pulley 343 and the right pulley 344 are symmetrical about the center line of the box body 340.

[0115] In order to prevent the left pulley 343 and the right pulley 344 from sliding relative to the box body 340, pulley bearings 3406 are arranged on both the left pulley 343 and the right pulley 344.

[0116] As a specific implementation manner, the side pile bearing 13 includes a steel ball and a rubber bearing. The steel ball and the rubber bearing are respectively located in the upper part and the lower part of the side pile bearing 13.

[0117] Among them, the lower part uses a rubber bearing, allowing a small horizontal displacement.

[0118] Reference Figure 8 As shown, a lead hole is provided in the steel ball of the side pile bearing 13, a lead hole steel pipe 131 is fixed in the lead hole, and an anchor 132 is arranged in the lead hole steel pipe.

[0119] Furthermore, the lower part of the grid beam 2 includes a plurality of lower cable nodes, and the lower cable 21 passes through the plurality of lower cable nodes. The two ends of the lower cable 21 respectively pass through the lead-in steel pipes in the steel spheres of the side pile supports 13 of the two side piles 1 and are fixed on the anchors 132.

[0120] A lower tension cable clamp 133 is disposed outside the steel sphere of the side pile support 13, and the lower tension cable clamp 133 is used to clamp the lower tension cable 35. Specifically, the lower tension cable 35 passes through the lower tension cable clamp 133 and is connected to the lower cable 21, and can be clamped by the lower tension cable clamp 133.

[0121] In the service state, when the upper cable is tightened, the upper tensioning cable 341 is pulled through the cable force distribution member 34, thereby pulling the tensioning end 333 of the rotating arm 33 close to the grid beam 2, and the pivot end 331 of the rotating arm 33 rotates around the second pivot 320 pivoted to the fixed arm 32, causing the sliding end 332 of the rotating arm 33 to slide on the inclined sliding groove surface 311 of the rigid support arm 31, and at the same time, the sliding end 332 of the rotating arm 33 pushes the rigid support arm 31 outward; in the process of the sliding end 332 of the rotating arm 33 pushing the rigid support arm 31 outward, the rotating arm 33 tightens the lower cable 21 through the lower tensioning cable 35.

[0122] It can be seen that when the upper cable is tightened, the lower cable 21 will be tightened, so the lower cable 21 and the upper cable actually form a closed self-locking self-tensioning system.

[0123] Among them, when the lower cable 21 is tensioned, since the side pile support 13 allows a small horizontal displacement, the side pile support 13 will produce a small displacement into the beam, causing the lower tensioning cable 35 to produce a tensioning effect, driving the rigid armrest 31 to rotate inwardly at the end of the beam, and the inclined sliding groove surface 311 squeezes the end of the sliding end 332 inwardly to make it slide slightly upward, so that the tensioning end 333 moves outwardly at the end of the beam, so that the upper left cable 22 and the upper right cable 23 are tensioned at the same time, and a certain tensioning effect is produced in linkage.

[0124] When the upper tensioning cable 341 tensions the upper left cable 22 and the upper right cable 23, the tensioning force of the upper tensioning cable 341 is transmitted to the tensioning end 333 through the anchor 342, causing it to move inwardly toward the beam end, driving the rotating arm 33 to rotate and the end of the sliding end 332 to slide downward, causing the rigid support arm 31 to rotate outwardly toward the beam end, causing the lower tensioning cable 35 to produce a tensioning effect. Since the side pile support 13 allows a small displacement, the side pile support 13 connected to the lower tensioning cable 35 is tensioned outwardly, producing a small outward displacement, and the tensioning effect of the lower cable 21 is further strengthened, resulting in linkage tensioning.

[0125] During the service stage, when the structure is subjected to downward loads such as downwind and self-weight, the lower stay cable 21 bears the vertical load, and the upper grid beam 2 is compressed, and the structure is in a self-balanced state; when the internal forces of the upper left stay cable 22 and the upper right stay cable 23 increase under the action of the upwind load, further tension is generated in the cables, driving the upper tension cable 341 to generate tension towards the beam end, driving the end of the sliding end 332 to slide downward, causing the rigid arm 31 to rotate outward towards the beam end, causing the lower tension cable 35 to be further tensioned, the tension increases, and the side pile support 13 is slightly tensioned outward, driving the lower stay cable 21 to be further tensioned, avoiding the relaxation of the lower stay cable 21 caused by excessive upwind load. Because the lower stay cable 21 has a linkage tensioning function with the upper left stay cable 22 and the upper right stay cable 23, a self-tensioning system for the entire flexible cable is realized under the working conditions of upwind and downwind loads.

[0126] Embodiment 2: A tensioning method for a self-locking and self-tensioning photovoltaic support system

[0127] Embodiment 2 of the present invention provides a tensioning method for a self-locking and self-tensioning photovoltaic support system, which adopts the self-locking and self-tensioning photovoltaic support system of Embodiment 1, and includes the following steps:

[0128] Step 1: After the structure is installed, apply a certain prestress to the lower stay cable 21 to make it in a tensioned state;

[0129] Step 2: Tension the upper tension cable 341 to provide prestress for the upper left stay cable 22 and the upper right stay cable 23 at the same time. The upper left stay cable 22 and the upper right stay cable 23 are pre-tensioned to make the upper left stay cable 22 and the upper right stay cable 23 pre-straighten;

[0130] Step 3: Tension the lower tension cable 35 to perform the first symmetric tension on the lower stay cable 21 until the first tension design value is reached;

[0131] Step 4: Perform the first symmetric tension on the upper left stay cable 22 and the upper right stay cable 23 until the first tension design value is reached;

[0132] Step 5: Install the photovoltaic module purlin on the top member above the grid beam 2, install the photovoltaic modules, and form the photovoltaic panel 24;

[0133] Step 6: Perform the second symmetric tension on the lower stay cable 21 until the second tension design value is reached;

[0134] Step 7: Perform the second symmetric tension on the upper left stay cable 22 and the upper right stay cable 23 until the second tension design value is reached;

[0135] Step 8: Tension the lower stay cable 21 until 10% of the design tensile force is reached. Due to the tensioning linkage effect, the upper left stay cable 22 also reaches 10% of the design tensile force.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A self-locking and self-tensioning photovoltaic support system is provided in a water area, comprising two side piles (1). A grid beam (2) is arranged between the two side piles (1). A side pile support (13) is arranged between the top ends of the grid beam (2) and the side piles (1). A photovoltaic panel (24) is arranged on the upper surface of the grid beam (2). A lower cable (21) is penetrated through the bottom of the grid beam (2). An upper left cable (22) and an upper right cable (23) are respectively penetrated through the two sides of the upper part of the grid beam (2). It is characterized in that, It also includes two sets of self-locking and self-tensioning mechanisms (3), which are respectively arranged at the joints of the two side piles (1) and the grid beam (2). Each set of the self-locking and self-tensioning mechanisms (3) includes a bracket (30) arranged on the outer wall of the end of each side pile (1); a rigid support arm (31) whose bottom end is pivotally connected to the bracket (30) of the corresponding side pile (1); a fixed arm (32) fixed on the outer wall of the top of the grid beam (2); a rotating arm (33) whose two ends are respectively set as a pivotal end (331) and a sliding end (332). A tensioning end (333) is formed by downward protrusion and hanging at the bottom near the pivotal end (331) of the rotating arm (33). The rotating arm (33) is pivotally connected to the fixed arm (32) through the pivotal end (331), and the rotating arm (33) is slidably connected to the free end of the rigid support arm (31) through the sliding end (332); a cable force distribution member (34) with an upper cable channel arranged inside. The ends of the upper left cable (22) and the upper right cable (23) pass through and wind in the upper cable channel of the cable force distribution member (34). The cable force distribution member (34) is detachably fixed on the tensioning end (333) of the rotating arm (33); Both ends of the lower cable (21) are respectively arranged on the side pile supports (13) of the two side piles (1).

2. The self-locking and self-tensioning photovoltaic support system according to claim 1, wherein each set of the self-locking and self-tensioning mechanisms (3) further includes a lower tensioning cable (35), the end of the lower cable (21) is arranged on the side pile support (13), and the side pile support (13) is connected to the middle part of the rigid support arm (31) through the lower tensioning cable (35), both ends of the lower cable (21) are respectively connected to the middle parts of the corresponding rigid support arms (31) through their respective lower tensioning cables (35). The two ends of the lower cable (21) are respectively connected to the upper left cable (22) and the upper right cable (23) through the lower tensioning cable (35), the rigid support arm (31), and the rotating arm (33) in sequence, jointly forming a closed self-locking and self-tensioning system.

3. The self-locking and self-tensioning photovoltaic support system according to claim 1, wherein a first pivot (310) is arranged on the top surface of the outer end of the bracket (30), and the bottom end of the rigid support arm (31) is pivotally connected to the top surface of the outer end of the bracket (30) through the first pivot (310); a second pivot (320) is arranged at the outer end of the fixed arm (32), and the pivotal end (331) of the rotating arm (33) is pivotally connected to the outer end of the fixed arm (32) through the second pivot (320); an inclined sliding groove surface (311) is arranged on the inner side of the free end of the rigid support arm (31), and the sliding end (332) of the rotating arm (33) extends into and abuts against the inclined sliding groove surface (311) of the free end of the rigid support arm (31), thereby realizing the sliding connection between the two.

4. The self-locking and self-tensioning photovoltaic support system according to claim 3, wherein The length of the sliding end (332) of the rotating arm (33) is greater than the lengths of the pivoting end (331) and the tensioning end (333) respectively. Under the triple actions of the rotation of the rotating arm (33) at the pivoting end (331), the tensioning of the tensioning end (333), and the extrusion of the sliding end (332), the rotating arm (33) fluctuates up and down in or around a horizontal state.

5. The self-locking and self-tensioning photovoltaic support system according to claim 1, wherein The upper cable channel inside the cable force distributor (34) extends outward to form an inlet and an outlet of the upper cable channel. The upper part of the grid beam (2) includes several groups of left cable nodes and right cable nodes. The left cable nodes and the right cable nodes appear in pairs and form a group. The upper left cable (22) passes through the left cable nodes of each group, and the upper right cable (23) passes through the right cable nodes of each group. The ends of the upper left cable (22) and the upper right cable (23) at the same end respectively penetrate into the inlets and outlets of the cable channels of the cable force distributor (34) of the corresponding self-locking and self-tensioning mechanism (3), and merge into one inside the cable force distributor (34). The two ends of the upper left cable (22) and the upper right cable (23) merge into one inside the cable force distributor (34) of the self-locking and self-tensioning mechanism (3) of the two side piles (1) respectively. Thus, the upper left cable (22) and the upper right cable (23) form an upper cable. The cable force distributor (34) is provided with an upper tension cable (341), and the upper tension cable (341) is fixedly connected to the corresponding upper cable inside the cable force distributor (34). The cable force distributor (34) is inserted on the tensioning end (333) of the rotating arm (33) through the upper tension cable (341).

6. The self-locking and self-tensioning photovoltaic support system according to claim 5, wherein The cable force distributor (34) includes a box body (340), and a left pulley (343) and a right pulley (344) are respectively arranged at both ends inside the box body (340). The gap between the left pulley (343) and the right pulley (344) and the inner wall of the box body (340) constitutes the upper cable channel, and the inlet and outlet of the upper cable channel are respectively arranged at both ends of the box body (340). The upper left cable (22) penetrates into the inlet of the upper cable channel of the box body (340) and bypasses the left pulley (343). The upper right cable 23 penetrates into the outlet of the upper cable channel of the box body (340) and bypasses the right pulley (344). The upper left cable (22) and the upper right cable (23) merge into one inside the box body (340) to form an upper cable.

7. The self-locking and self-tensioning photovoltaic support system according to claim 6, wherein An upper tension cable clamp (345) is arranged in the middle of the outer wall of the box body, and the upper tension cable clamp (345) is used to clamp the upper tension cable (341).

8. The self-locking and self-tensioning photovoltaic support system according to claim 7, wherein The cable force distributor (34) further includes an anchor (342), and the anchor (342) is fixed to the end of the tensioning end (333) of the rotating arm (33). The anchor (342) is matched with the upper tension cable (341) and is used to clamp the upper tension cable (341).

9. The self-locking and self-tensioning photovoltaic support system according to claim 8, wherein The box body (340) is sequentially formed by butt-jointing an upper cover plate (3401), a lower bottom plate (3402), a back plate (3403) and a sealing plate (3404); A back plate stiffening plate (3405) is further arranged on the back plate (3403), and the tension cable clamp (345) is fixedly connected with the back plate stiffening plate (3405); The left pulley (343) and the right pulley (344) are symmetrical about the center line of the box body (340); Both the left pulley (343) and the right pulley (344) are provided with pulley bearings (3406).

10. The self-locking and self-tensioning photovoltaic support system according to claim 1, wherein The side pile support (13) comprises a steel ball and a rubber support, and the steel ball and the rubber support are respectively located at the upper part and the lower part of the side pile support (13); A lead hole is arranged in the steel ball of the side pile support (13), a lead hole steel pipe (131) is fixed in the lead hole, and an anchor (132) is arranged in the lead hole steel pipe; The lower part of the grid beam (2) comprises a plurality of lower cable nodes, the lower cable (21) passes through the plurality of lower cable nodes, and both ends of the lower cable (21) respectively pass through the lead hole steel pipes (131) in the steel balls of the side pile supports (13) of two side piles (1) and are fixed on the anchors (132); A lower tension cable clamp (133) is arranged outside the steel ball of the side pile support (13), the lower tension cable (35) passes through the lower tension cable clamp (133) and is connected with the lower cable (21), and can be clamped by the lower tension cable clamp (133).

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