Load-bearing cable and cross beam end node for photovoltaic flexible support

Abstract

The utility model provides a load-bearing cable and cross beam end part node for a photovoltaic flexible support, which belongs to the field of photovoltaic support structures, and comprises an end truss steel column, an end truss rectangular steel pipe cross beam, a threading pipe and a load-bearing cable, the top of the end truss steel column is provided with a column top end plate, and the bottom of the end truss rectangular steel pipe cross beam is provided with a beam bottom end plate; the column top end plate and the beam bottom end plate are detachably connected, threading holes are formed in the side walls of the two sides of the end truss rectangular steel pipe cross beam respectively, the threading pipe is arranged on the end truss rectangular steel pipe cross beam in a penetrating and penetrating mode through the threading holes, the right end of the bearing cable is arranged outside the threading pipe, and the left end of the bearing cable sequentially penetrates through the interior of the threading pipe and the interior of the wedge-shaped cushion block. And then connecting with an anchorage device with an anti-loosening device. The node can be assembled without on-site welding, is convenient to operate, not only reduces the manufacturing cost, but also reduces the risk of on-site construction, and in addition, the node can ensure that the load-bearing cable is clear in force transmission, and can ensure that the load-bearing cable is in force transmission operation with the maximum efficiency.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic support structures, in particular to a load-bearing cable and a crossbeam end node for a photovoltaic flexible support. Background Art

[0002] The photovoltaic flexible support system has the characteristics of large span and high clearance, which can greatly improve the space utilization rate of land. It is now widely used in mountainous areas, fish ponds, agricultural greenhouses, sewage treatment plants, etc. According to the different spans, the photovoltaic flexible support is mainly divided into two-cable and three-cable systems. The two-cable system is suitable for smaller spans. The three-cable system consists of two component cables, one load-bearing cable and inter-cable struts. Because it can form a space cable truss, its bearing capacity and wind resistance are more superior, and it can be used for spans of 30-100m. In the end bracket of the three-cable system, the crossbeam needs to bear the large tensile force from the load-bearing cable and the component cable, and its stress state is relatively complex, with both large bending moment and large torque. Therefore, rectangular steel tubes with good bidirectional bending and torsion resistance are usually used. The main problem brought by the rectangular steel tube section is that the threading and anchoring of the load-bearing cable is relatively complicated. At present, the threading of the load-bearing cable is mostly done by directly inserting the cable through the openings on the two side walls of the rectangular steel tube crossbeam. This method is difficult to operate, and the cable often does not align with the second side wall hole. In addition, during use, the cable is in direct contact with the hole wall, which can easily cause the hole wall to cut the cable body. The load-bearing cable in the three-cable system is relatively large in stress, so the anchor node at its end is particularly important. Many projects do not consider the node treatment between the load-bearing cable and the end crossbeam sufficiently, such as using H-shaped steel with poor out-of-plane bending and torsion resistance as the crossbeam, using on-site welding to connect the top crossbeam to the top of the column, and lacking stiffening ribs at the connection between the crossbeam and the top of the column, which creates a major safety hazard. In addition, most of the beams and column tops are currently welded, which will result in a large amount of on-site welding. On-site welding is affected by the environment and high-altitude operations. The quality of the welds is not easy to guarantee compared to factory welding, and the rework rate is high, which will also increase labor costs and construction cycles. Utility Model Content

[0003] In view of this, the utility model aims to propose a load-bearing cable and beam end node for a photovoltaic flexible bracket. The node can be assembled without on-site welding, and is easy to operate. It can not only reduce the cost of construction, but also reduce the risk of on-site construction, making on-site construction safe and reliable. In addition, by setting a threading tube, it can facilitate the threading construction, and the threading tube can prevent the cable from being cut by the threading hole on the side wall of the beam. The stiffening ribs set on the side of the beam can prevent the beam from being subjected to the large tension transmitted by the load-bearing cable, causing local deformation or instability of the beam wall panel. This node can ensure that the load-bearing cable transmits force clearly. On the one hand, it can prevent the load-bearing cable from accidentally applying force to the beam to cause damage, and on the other hand, it can ensure that the load-bearing cable transmits force with maximum efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a load-bearing cable and beam end node for a photovoltaic flexible bracket, comprising an end frame steel column, an end frame rectangular steel tube beam, a threading tube and a load-bearing cable, a column top plate is arranged on the top of the end frame steel column, a beam bottom end plate is arranged on the bottom of the end frame rectangular steel tube beam, the column top plate and the beam bottom end plate are detachably connected, threading holes are respectively arranged on the side walls of the end frame rectangular steel tube beam, the threading tube is inserted through the threading holes and arranged on the end frame rectangular steel tube beam, the right end of the load-bearing cable is arranged outside the threading tube, and the left end passes through the inside of the threading tube and the inside of the wedge-shaped pad in turn, and then is connected to the anchor with an anti-loosening device.

[0005] Furthermore, the end frame steel column is an independent column or an A-column.

[0006] Furthermore, column top stiffening ribs are provided between the end frame steel column and the top plate of the column.

[0007] Furthermore, beam side stiffening ribs are arranged between the end rectangular steel tube cross beam and the beam bottom end plate.

[0008] Furthermore, two threading holes are arranged on the side walls of the end rectangular steel tube cross beam, and there is a height difference between the two in the vertical direction.

[0009] Furthermore, one end of the threading tube is provided with a bell-mouth structure, and the other end is provided with a plurality of bending parts, and a notch is provided between two adjacent bending parts, so that the bending parts can be bent and deformed when subjected to external force.

[0010] Furthermore, the inclination angle of the threading tube is consistent with the slope angle of the wedge-shaped pad.

[0011] Furthermore, the bottom end plate of the beam and the top end plate of the column are connected by a plurality of high-strength bolts.

[0012] Compared with the prior art, the load-bearing cable and beam end node for a photovoltaic flexible support described in the utility model has the following advantages:

[0013] (1) The utility model can be assembled without welding at the construction site, which is convenient to operate, not only reducing the construction cost, but also reducing the risk of on-site construction, making on-site construction safe and reliable;

[0014] (2) The utility model has a simple structure and is easy to manufacture in a factory. All weld connections in the nodes are completed in the factory, and welding does not need to be performed on the construction site, which facilitates the control of construction quality and progress.

[0015] (3) The node described in the utility model can ensure that the load-bearing cable transmits force clearly. On the one hand, it can prevent the load-bearing cable from accidentally applying force to the beam and causing damage. On the other hand, it can ensure that the load-bearing cable transmits force with maximum efficiency.

[0016] (4) The wedge-shaped pad matches the angle of the load-bearing cable, which can make the anchor, wedge-shaped pad, and end rectangular steel tube beam seamlessly pressed together, thereby improving the overall reliability and stability of the node;

[0017] (5) The end rectangular steel tube cross beam is provided with beam side stiffening ribs on both sides of the threading tube, which can provide strengthened support for the end rectangular steel tube cross beam wall panel to avoid local deformation or instability damage of the wall panel caused by large cable force;

[0018] (6) By setting up a threading tube, it is convenient to thread the wire on site in the factory and improve efficiency;

[0019] (7) The wire threading tube can protect the cable body and prevent the cable body from directly contacting the openings on the side wall of the beam, thereby avoiding being cut by the openings on the side wall during long-term stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 This is a front view of a load-bearing cable and a crossbeam end node for a photovoltaic flexible support according to an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0023] Figure 3 This is a schematic diagram of the structure of the threading tube according to an embodiment of the utility model;

[0024] Figure 4 The present invention is a structural schematic diagram of a wire threading tube having a notch at one end.

[0025] Description of reference numerals:

[0026] 1. End steel column; 2. End rectangular steel tube beam; 3. Top plate of column; 4. Bottom plate of beam; 5. Threading tube; 6. Wedge-shaped pad; 7. Anchor with anti-loosening device; 8. Load-bearing cable; 9. High-strength bolts; 10. Stiffening ribs at the top of column; 11. Stiffening ribs on the side of beam; 12. Threading holes; 13. Bell mouth; 14. Notch; 15. Bending part. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] like Figure 1-Figure 4 As shown, the utility model provides a load-bearing cable and crossbeam end node for a photovoltaic flexible support. This node is mainly for a three-cable structural system with a large force, and can also be used for a two-cable system. The node is safe and reliable, has clear force transmission, is easy to operate, and does not require on-site welding, which effectively saves labor costs and shortens the on-site construction period. It can be applied to various types of photovoltaic flexible support projects and other similar cable structure projects, and can also be applied to general cable structure projects. Specifically, the utility model is a load-bearing cable and crossbeam end node for a photovoltaic flexible support, including an end frame steel column, an end frame rectangular steel tube crossbeam, a threading tube and a load-bearing cable. The top of the end frame steel column is provided with a column top plate, and the bottom of the end frame rectangular steel tube crossbeam is provided with a beam bottom end plate. The column top plate and the beam bottom end plate are detachably connected. Preferably, the beam bottom end plate and the column top plate are connected by a number of high-strength bolts. The two side walls of the end rectangular steel tube beam are provided with threading holes at different heights, that is, the two threading holes provided on the two side walls of the end rectangular steel tube beam have a height difference in the vertical direction, and the threading tube is inserted through the threading hole and provided on the end rectangular steel tube beam. After the threading tube is installed, the threading tube presents a certain inclination angle α on the end rectangular steel tube beam, and the right end of the load-bearing cable is provided outside the threading tube, and the left end passes through the inside of the threading tube and the inside of the wedge-shaped pad in turn, and then is connected to the anchor with an anti-loosening device. The side of the wedge-shaped pad that contacts the anchor with an anti-loosening device is provided with an inclined surface angle β, and the inclination angle α of the threading tube is consistent with the inclined surface angle β of the wedge-shaped pad, so that the angle of the wedge-shaped pad matches the angle of the load-bearing cable, so that the anchor with an anti-loosening device, the wedge-shaped pad, and the end rectangular steel tube beam can be seamlessly compressed. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] The end frame steel columns are independent columns, A-columns or other types of steel columns.

[0031] The column top stiffening ribs are arranged between the end frame steel column and the top plate of the column. Specifically, the column top stiffening ribs are arranged on the four side walls of the end frame steel column, which can play the role of supporting the top plate of the column, strengthen the connection between the column top and the end plate, and ensure the transmission of the horizontal force of the column top.

[0032] Beam side stiffening ribs are arranged between the end rectangular steel tube cross beam and the end plate at the bottom of the beam. Specifically, the end rectangular steel tube cross beam is provided with beam side stiffening ribs on the side walls on both sides of the threading tube, which can provide reinforced support for the end rectangular steel tube cross beam wall plate to avoid local deformation or instability damage of the wall plate caused by large cable force.

[0033] All weld connections such as the stiffening ribs on the top of the column in the node and the stiffening ribs on the side of the beam are completed in the factory. When assembling the end rectangular steel tube beams and the end steel columns at the construction site, only high-strength bolts are needed. The operation is convenient and no welding is required at the construction site. It can not only reduce the construction cost, but also reduce the risk of on-site construction, making on-site construction safe and reliable.

[0034] One end of the threading tube is provided with a trumpet structure to facilitate the threading of the load-bearing cable. The other end of the threading tube is a bendable section with a notch. Specifically, the other end is provided with multiple bending parts, and a notch is provided between two adjacent bending parts. When the bending part is subjected to external force, it can be bent and deformed. After the tube is threaded, the bending part is bent outward so that it is stuck outside the rectangular steel pipe beam of the end frame and fits with the side wall of the rectangular steel pipe beam of the end frame. At the same time, the wedge-shaped pad can press the bending part, so that the threading tube can be effectively prevented from retreating after the tube is threaded, thereby improving reliability and safety. The fixing of the threading tube does not require welding and fixing at the construction site, and can be achieved through the bending part, which not only improves the installation efficiency of the node, but also reduces the risk of on-site construction. By setting up a threading tube, it is convenient to thread the cable on site in the factory, which effectively improves efficiency. In addition, the threading tube can protect the cable body and prevent the cable body from directly contacting the side wall openings of the end rectangular steel tube beam, thereby avoiding being cut by the side wall openings during long-term stress.

[0035] In the actual work process, the end steel column is welded to the top plate of the column through the column top stiffening rib in the factory, and the end rectangular steel tube beam is welded to the bottom end plate of the beam through the beam side stiffening rib in the factory. When the components are transported to the site for installation, the bottom end plate of the beam is connected to the top plate of the column with a number of high-strength bolts; the wall panels on both sides of the end rectangular steel tube beam are provided with threading holes at different heights, and the threading tube is inserted into the end rectangular steel tube beam from the lower side. After the end with the notch passes through the end rectangular steel tube beam, the bent part of the end of the threading tube is bent along the notch and stuck on the outside of the end rectangular steel tube beam to prevent the threading tube from retreating; after the load-bearing cable is inserted through the bell mouth of the threading tube, it is passed out from the other side of the end rectangular steel tube beam and inserted into the wedge-shaped pad, and then the anchor with anti-loosening device is installed.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A load-bearing cable and beam end node for a photovoltaic flexible support, characterized in that: It includes an end steel column, an end rectangular steel tube beam, a threading tube and a load-bearing cable. A column top plate is arranged on the top of the end steel column, a beam bottom end plate is arranged on the bottom of the end rectangular steel tube beam, the column top plate and the beam bottom end plate are detachably connected, threading holes are respectively arranged on the side walls of the end rectangular steel tube beam, the threading tube is inserted through the threading holes and arranged on the end rectangular steel tube beam, the right end of the load-bearing cable is arranged outside the threading tube, and the left end passes through the inside of the threading tube and the inside of the wedge-shaped pad in turn, and then is connected to the anchor with an anti-loosening device.

2. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 1, characterized in that: The end steel columns are independent columns or A-shaped columns.

3. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 2, characterized in that: Column top stiffening ribs are arranged between the end frame steel column and the top plate of the column.

4. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 1, characterized in that: Beam side stiffening ribs are arranged between the end rectangular steel tube cross beam and the beam bottom end plate.

5. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 1, characterized in that: Two threading holes are arranged on the side walls of both sides of the rectangular steel tube cross beam of the end frame, and there is a height difference between the two in the vertical direction.

6. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 5, characterized in that: One end of the threading tube is provided with a bell mouth structure, and the other end is provided with a plurality of bending parts, and a notch is provided between two adjacent bending parts. When the bending parts are subjected to external force, they can be bent and deformed.

7. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 6, characterized in that: The inclination angle of the threading tube is consistent with the slope angle of the wedge-shaped spacer.

8. The load-bearing cable and beam end node for a photovoltaic flexible support according to claim 1, characterized in that: The bottom end plate of the beam and the top end plate of the column are connected by several high-strength bolts.

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