A bracket node, a middle bracket and a node installation method

Abstract

The present invention discloses a bracket node, a middle bracket and a node installation method. The bracket node includes a cushion block and a locking member. One side of the cushion block is arranged in contact with the cross beam on the bracket, and the side of the cushion block facing away from the cross beam is an arc surface structure; the locking member passes through the cross beam and cooperates with the arc surface structure of the cushion block to form a connection hole, and the main cable passes through the connection hole and is locked to the cushion block; the arc surface structure is a partial cylindrical surface structure, and the axis of the arc surface structure is perpendicular to the length direction of the main cable. The present invention supports the main cable through the cushion block and cooperates with the locking member to lock the main cable. The cushion block reduces the risk of the main cable's folding angle through the arc surface structure. At the same time, the main cable can be closer to the center of the cross beam, thereby optimizing the force on the cross beam and improving the connection stability of the main cable.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic equipment, and particularly relates to a bracket node, a middle bracket and a node installation method. Background Art

[0002] With the development of the photovoltaic industry, flexible photovoltaic systems have shown great advantages in the construction of power stations in complex terrains. Steel strands are used as the main load-bearing cables (main cables) between flexible photovoltaics, and the main cables are fixed through end brackets composed of steel beams, side anchors, etc. Due to the large span of the main cable, multiple intermediate bracket structures need to be set in the area where the main cable spans for the main cable to pass through and support the main cable. However, during the installation process of the main cable, the main cable needs to be tensioned to a certain tensile force to achieve stable support for the photovoltaic panels. The mountainous situation is relatively complex, and multiple middle brackets will have an up-and-down working condition, resulting in a kink in the main cable. A kink in the main cable at the node position of the middle bracket will pose a certain risk of jamming. It will not only make it difficult to tension the main cable, but also there is a risk of the main cable breaking due to the uneven force at the kink position, causing great economic losses.

[0003] Therefore, how to improve the stability of the main cable assembly and tensioning process is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a bracket node to improve the stability of the main cable assembly and tensioning process.

[0005] Another purpose of the present invention is to provide a middle bracket including the above-mentioned bracket node.

[0006] Another purpose of the present invention is to provide an installation method for the above-mentioned bracket node.

[0007] To achieve the above purposes, the present invention provides the following technical solutions:

[0008] A bracket node includes a cushion block and a locking member. One side of the cushion block is attached to a cross beam on the bracket, and the side of the cushion block facing away from the cross beam is an arc surface structure; the locking member passes through the cross beam and cooperates with the arc surface structure of the cushion block to form a connection hole, and the connection hole is for the main cable to pass through and lock the main cable to the cushion block;

[0009] A limiting portion is arranged in the connection hole. The limiting portion passes through the connection hole and contacts the arc surface structure. The main cable is pressed by the locking member to the limiting portion. The limiting portion is a steel wire rope and at least two strands of the steel wire rope pass through the connection hole. The main cable contacts two strands of the steel wire rope at the same time and is fixedly connected to at least a part of the area of the steel wire rope.

[0010] Preferably, in the above-mentioned bracket node, the arc surface structure is a partial cylindrical surface structure, and the axis of the arc surface structure is perpendicular to the length direction of the main cable.

[0011] Preferably, in the above-mentioned bracket node, the projection of the steel wire rope in the length direction of the main cable extends beyond both sides of the cross beam, and the areas where the steel wire rope extends beyond both sides of the cross beam are respectively fixedly connected to the main cable through rope clamps.

[0012] Preferably, in the above-mentioned bracket node, two steel wire ropes are arranged in parallel and both pass through the connection hole.

[0013] Preferably, in the above-mentioned bracket node, a single steel wire rope is provided, and the single steel wire rope extends along the length direction of the main cable, surrounds the cross beam in the connection hole for one circle and then continues to extend.

[0014] Preferably, in the above-mentioned bracket node, the steel wire rope contacts the cushion block and presses the main cable against the locking member, and the axis connection line of the two steel wire ropes in contact with the main cable is an isosceles triangle. Preferably, in the above-mentioned bracket node, the steel wire rope contacts the locking member and presses the main cable against the cushion block, and the axis connection line of the two steel wire ropes in contact with the main cable is an isosceles triangle.

[0015] Preferably, in the above-mentioned bracket node, the size of the side of the cushion block that fits the cross beam in the length direction of the main cable is larger than that of the cross beam, and it fits the edge of the cross beam through a bending structure.

[0016] A middle bracket includes a bracket column and a cross beam. The cross beam is fixedly arranged on the bracket column, and several bracket nodes as described in any one of the above embodiments are arranged on the cross beam.

[0017] An installation method for a bracket node is used to install the bracket node as described in any one of the above embodiments on a middle bracket. The installation method at least includes the following steps:

[0018] Pre-fix the main cable: After the main cable is tensioned, surround the main cable with a U-bolt and pass it through the cross beam. The main cable is located in the connection hole, and the U-bolt is in a non-locked state so that the main cable has freedom in the connection hole;

[0019] Pre-install the steel wire rope: Fix one end of the steel wire rope to the main cable through a rope clamp to form a fixed end, pass the other free end of the steel wire rope through the connection hole, wind around the cross beam for one circle, and then pass back through the connection hole again to form a two-strand steel wire rope structure in the connection hole;

[0020] Lock the wire rope: Install a first clip at the free end of the wire rope, and install a second clip on the main rope passing through the connection hole. Pull the two clips toward each other until the wire rope is tightly connected to the beam and the pad in a full circle, and the free end of the wire rope is taut.

[0021] Fix the main rope: Use the rope clamp to lock the free end of the wire rope on the main rope, tighten the U-bolt, and remove the rope clamp to complete the installation of the bracket node.

[0022] Preferably, in the installation method of the above-mentioned bracket node, in the step of locking the wire rope, the opposite tensioning of the first cable clamp and the second cable clamp is achieved by a hand winch, and the distance between the first cable clamp and the second cable clamp in the length direction of the main rope is greater than the hand winch.

[0023] It can be seen from the above technical solution that the bracket node provided by the present invention is provided with a pad on the beam for receiving the main cable, and the pad is connected to the beam through a locking piece to form a connecting hole. When the main cable passes through the connecting hole and is fixed by the locking piece, the installation convenience of the main cable can be improved by the expansion and contraction of the connecting hole, and the setting of the locking piece can make the main cable dock with the arc surface structure on the pad. Compared with the structure in which the main cable directly contacts the beam in the prior art, it can have a smooth transition structure, and avoid the problem of the main cable being bent or knotted when the height changes between adjacent bracket nodes, and being unable to continue to be tensioned. At the same time, compared with the structure in which the roller node is set in the prior art, it can reduce production costs, and make the main cable and the beam have a shorter distance. When the main cable is subjected to force, the force arm between it and the beam is shorter, so that the beam and the main cable have stronger structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments 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 diagram of the structure of a middle support with support nodes provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the middle bracket node structure;

[0027] Figure 3 This is the front view of the main cable passing through the support node;

[0028] Figure 4 forFigure 3 Schematic cross-sectional structure diagram of the locking member position;

[0029] Figure 5 Top view of the main cable passing through the bracket node position;

[0030] Figure 6 Lateral view of a single middle bracket;

[0031] Figure 7 is Figure 6 Schematic structure diagram after rotation of area A in ;

[0032] Figure 8 is Figure 7 Schematic structure diagram of the locking structure of the steel wire rope and the main cable in the connection hole in .

[0033] Among them, 10 - spacer; 110 - arc surface structure; 20 - locking member; 210 - connection hole; 30 - limiting part; 310 - steel wire rope; 40 - wire clip; 510 - bracket column; 520 - cross beam; 60 - main cable. Specific implementation mode

[0034] The core of the present invention lies in disclosing a bracket node to improve the stability of the main cable assembly and tensioning process.

[0035] Another core of the present invention lies in providing a middle bracket including the above-mentioned bracket node, and a flexible photovoltaic system including the above-mentioned middle bracket.

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the invention recorded in the claims in any way. In addition, all the contents of the constitution shown in the following embodiments are not limited to what is necessary for the solution of the invention recorded in the claims.

[0037] Such as Figure 1 and Figure 2As shown in the figure, the bracket node provided by the embodiment of the present invention includes a cushion block 10 and a locking member 20. Among them, one side of the cushion block 10 is attached to the cross beam 520 on the bracket. At the same time, the side of the cushion block 10 facing away from the cross beam 520 is an arc surface structure 110, so as to prevent the cross beam 520 with a sharp-corner cross-sectional configuration from directly contacting the main cable 60 and generating sharp corners during the tensioning process of the main cable 60. Specifically, the cushion block 10 is attached to the cross beam 520 and fixedly connected to the cross beam 520 as an integral structure. The arc surface structure 110 on the cushion block 10 can be a conical surface, a cylindrical surface or a spherical arc surface structure 110. It should be noted that the purpose of setting the arc surface structure 110 is to avoid the problem of angular distortion of the main cable 60 when different bracket nodes are at different heights and the main cable 60 needs to change its position in the height direction. Therefore, the arc surface structure 110 needs to have an arc transition region in the length extension direction of the main cable 60. In some embodiments of the present invention, the arc surface structure 110 is designed as a partial cylindrical surface structure that is easy to process and assemble, that is, the arc surface structure 110 is a partial region of the cylindrical surface, and the axis of the arc surface structure 110 is set at a preset angle with the length direction of the main cable 60. It should be noted that the axis of the arc surface structure 110 being set at a preset angle rather than parallel to the length direction of the main cable 60 can achieve the transition of the arc surface structure 110 to the main cable 60. In a preferred embodiment of the present invention, in order to make the main cable 60 have a more uniform transition effect on both sides of the cross beam 520 and reduce the risk of skewed sliding of the main cable 60, the axis of the arc surface structure 110 is perpendicular to the length direction of the main cable 60. The main cable 60 can maintain the smallest contact area with the arc surface structure 110 of the cushion block 10. When the locking member 20 locks the main cable 60 to the cushion block 10, the main cable 60 has a smaller moving space, thereby improving the structural stability of the main cable 60.

[0038] In the above embodiments, the locking member 20 is specifically a structure passing through the cross beam 520, and the locking member 20 can cooperate with the arc surface structure 110 of the cushion block 10 to form a connection hole 210. It should be noted that the connection hole 210 is a hole structure with adjustable size, and its expansion and contraction can be realized by the area where the locking member 20 passes through the cross beam 520, enabling the main cable 60 to have a relatively large docking space to pass through the connection hole 210 and then contract to lock the main cable 60. On the basis of the above structure, the main cable 60 can have a relatively large assembly space and conveniently pass through the connection hole 210. At the same time, the function of the locking member 20 enables the main cable 60 to be docked with the arc surface structure 110 on the cushion block 10. Compared with the structure in the prior art where the main cable 60 directly contacts the cross beam 520, it can have a smooth transition structure, avoiding the problems of kinking or knotting of the main cable 60 when there is a height change between adjacent support nodes, and thus unable to continue tensioning. At the same time, compared with the structure of setting roller nodes in the prior art, there is only the cushion block 10 between the main cable 60 and the load-bearing cross beam 520, resulting in a shorter distance between the main cable 60 and the cross beam 520. When the main cable 60 is subjected to a force, the lever arm between it and the cross beam 520 is shorter, making the cross beam 520 and the main cable 60 have stronger structural stability. It should be noted that the cushion block 10 can be a cushion block 10 made of aluminum alloy material to have a good support effect and a relatively large weight, thereby reducing the load on the cross beam 520.

[0039] To further optimize the above technical solution, the support node provided in the embodiment of the present invention further includes a limiting portion 30. The limiting portion 30 is used to limit the sway of the main cable 60. Specifically, the limiting portion 30 passes through the connection hole 210, one side of which contacts the arc surface structure 110 of the cushion block 10, and the other side is used to contact and support the main cable 60. The main cable 60 is pressed by the locking member 20 against the limiting portion 30, and the limiting portion 30 is clamped and limited to the main cable 60 in the axial direction of the arc surface structure 110. Thus, when the main cable 60 is tensioned, it can only be adjusted along its length direction and will not sway along both sides of the length direction.

[0040] The setting of the limiting portion 30 is to reduce the risk of sway of the main cable 60 and avoid the risk of wear and fracture of the main cable 60 due to sway at the support node position. It can be provided with a groove structure for the main cable 60 to be embedded, or a protrusion structure can be used to limit the sway space of the main cable 60 in the connection hole 210. In some embodiments of the present invention, such as Figure 2 and Figure 3As shown, the limiting part 30 adopts a steel wire rope 310 structure. Specifically, at least two strands of steel wire ropes 310 pass through the connecting hole 210, and the axis of the steel wire rope 310 is arranged parallel to the axis of the main cable 60. The main cable 60 is in contact with both strands of steel wire ropes 310 at the same time. Since both the steel wire rope 310 and the main cable 60 are cylindrical structures, the two strands of steel wire ropes 310 can be stably located inside the connecting hole 210 due to the limiting components on both sides of the locking part 20, while the main cable 60 can be stuck into the gap between the two strands of steel wire ropes 310, and by means of stacking and squeezing for limiting, the risk of shaking on both sides in the length direction can be reduced.

[0041] Furthermore, in order to ensure the limiting effect of the steel wire rope 310 on the main cable 60, it is preferred that the projection of the steel wire rope 310 in the length direction of the main cable 60 covers the cross beam 520, that is, the length of the steel wire rope 310 needs to be greater than the width of the cross beam 520. While the steel wire rope 310 limits the main cable 60 in the connecting hole 210, it extends out of the connecting hole 210 in the length direction of the main cable 60, and has an area partially overlapping with the main cable 60. The above structure can increase the contact area between the steel wire rope 310 and the main cable 60 in the length direction of the main cable 60, so that when the main cable 60 extends and contracts in its length direction, the steel wire rope 310 can still maintain the limiting structure in the connecting hole 210, and prevent the steel wire rope 310 from slipping out of the connecting hole 210 and losing the limiting effect on the main cable 60.

[0042] At the same time, it should be noted that the areas where the steel wire rope 310 extends beyond both sides of the cross beam 520 are respectively fixedly connected to the main cable 60 through wire rope clips 40, so that the steel wire rope 310 and the main cable 60 are fixedly connected into an integrated structure. It can not only prevent the steel wire rope 310 from slipping out of the connecting hole 210, that is, limit and protect one side of the steel wire rope 310 through the wire rope clip 40, and improve the limiting stability of the steel wire rope 310 on the main cable 60 in the connecting hole 210; at the same time, the integrated structure of the main cable 60 and the steel wire rope 310 can have a larger cross-sectional area at the position of the support node, that is, the fixation of the steel wire rope 310 strengthens the strength and expands the cross-section of the main cable 60. At the position of the support node, the main cable 60 has a stronger stiffness effect. While the steel wire rope 310 reduces the risk of bending of the main cable 60, it improves the bearing strength of the main cable 60 in the connecting hole 210, and makes the main cable 60 have a more stable assembly effect.

[0043] It should be further noted that it is preferred to arrange at least two wire rope clips 40 at least at intervals on the side where the steel wire rope 310 extends out of the cross beam 520. The specific arrangement is based on the extending length of the steel wire rope 310, and only needs to ensure that the arrangement of the wire rope clips 40 can keep the steel wire rope 310 and the main cable 60 in a stable fitting structure. Arranging at least two wire rope clips 40 can be used as backups for each other, and prevent the steel wire rope 310 from falling off and losing the limiting and structure strengthening effects on the main cable 60 when a single wire rope clip 40 fails.

[0044] In addition, it is preferably that the lengths of the wire ropes 310 located on both sides of the cross beam 520 in the length direction of the main cable 60 are equal, and the wire ropes 310 are fixedly connected to the main cable 60 through symmetrically arranged wire clamps 40, so as to make the structures on both sides of the cross beam 520 have better uniformity and stability.

[0045] Furthermore, in the support node provided by the embodiment of the present invention, the wire ropes 310 can be two parallel ones. The two wire ropes 310 can be in contact or arranged at intervals. They are arranged in a parallel state through the connection holes 210, while the main cable 60 is arranged between the two wire ropes 310 and is in contact with both wire ropes 310 at the same time, so as to achieve the limiting effect. In some embodiments of the present invention, in order to reduce the number of installation parts, as Figure 3 and Figure 4 shown, a single wire rope 310 is provided. And in the area of the connection hole 210 of the single wire rope 310, after winding around the cross beam 520 for one circle, it continues to extend along the length direction, that is, in the length direction of the main cable 60, the single wire rope 310 can extend on both sides of the cross beam 520 respectively and is fixedly arranged with the main cable 60 respectively, and its winding structure around the cross beam 520 can form a two-circle structure in the connection hole 210, so as to achieve the effect of limiting the sway of the main cable 60.

[0046] Based on the above embodiments, the wire rope 310 and the main cable 60 are in a locked state in the connection hole 210, and they have different relative position setting forms. In some embodiments of the present invention, the wire rope 310 is used as an intermediate structure to support the main cable 60 based on the cushion block 10, that is, the wire rope 310 props up the main cable 60 and during the process of shrinking and locking in the connection hole 210, presses the main cable 60 onto the locking part 20. At this time, the main cable 60 only contacts the locking part 20 and the wire rope 310, and forms a stable triangular structure with the wire rope 310. In order to improve the stability of the wire rope 310 in limiting and supporting the main cable 60, as Figure 5 , Figure 6 and Figure 7 shown, in some embodiments of the present invention, the axis connection line of the main cable 60 and the two wire ropes 310 in contact with it is an isosceles triangle. Specifically, in the cross section in the length direction of the main cable 60, the axis of the main cable 60 and the axes of the two wire ropes 310 are three points. Connecting these three points as vertices to form a triangular structure can form an isosceles triangular structure with the axis of the main cable 60 as the vertex. The supporting force arms of the two wire ropes 310 for the main cable 60 are similar, and can provide a more uniform supporting force, reducing the risk of the main cable 60 sliding along one side of the wire rope 310.

[0047] In some other embodiments of the present invention, the steel wire rope 310 serves as a filling structure at the top of the main cable 60 to contact the locking member 20, filling the area between the main cable 60 and the locking member 20. That is, the main cable 60 remains in contact with the cushion block 10, and the steel wire rope 310 is arranged in the gap between the main cable 60 and the locking member 20. During the process of reducing and locking the connection hole 210, the steel wire rope 310 gradually presses the main cable 60 against the cushion block 10, thereby achieving the purpose of stably arranging the main cable 60 on the cushion block 10. At the same time, the axis connection line of the two strands of steel wire rope 310 with which the main cable 60 contacts can also form an isosceles triangle to enhance the locking effect of the steel wire rope 310 on the main cable 60.

[0048] It should be further noted that in some other embodiments of the present invention, different specifications of the locking member 20 can also achieve the effect of pressing the steel wire rope 310 from both sides of the main cable 60 towards the axis direction of the main cable 60. The main cable 60 is in contact with both the locking member 20 and the cushion block 10 simultaneously, and the steel wire rope 310 fills the areas on both sides of the main cable 60 to maintain the locked state of the main cable 60.

[0049] Furthermore, since the cushion block 10 is the basis of the support structure of the main cable 60 on the cross beam 520, in some embodiments of the present invention, the size of the side of the cushion block 10 that fits the cross beam 520 in the length direction of the main cable 60 is set to be larger than the width size of the cross beam 520, so that the cushion block 10 can surround one side wall of the cross beam 520 in the length direction of the main cable 60, having a larger contact area and improving the fitting effect of the cushion block 10. In addition, in order to reduce the weight of the support node, the arc-shaped convex structure of the cushion block 10 can be set as a cavity, and reinforcing rib plates are arranged inside it to reduce the weight of the cushion block 10 while meeting the support effect on the main cable 60.

[0050] In addition, in some embodiments of the present invention, the locking member 20 is a U-shaped bolt, which has stable structural strength and sufficient assembly convenience. Specifically, holes are opened on the cross beam 520 for both sides of the U-shaped bolt to pass through, and the bottom of the U-shaped structure of the U-shaped bolt protrudes from the arc surface structure 110 of the cushion block 10 to form a connection hole 210 for the main cable 60 to pass through. By pushing or pulling out the U-shaped bolt, the passing area of the connection hole 210 can be adjusted to facilitate the assembly and locking of the main cable 60. The open side of the U-shaped bolt can pass through one or two side walls of the cross beam 520. Preferably, the open side of the U-shaped bolt passes through two side walls of the cross beam 520, enabling the operator to perform fastening operations from outside the cross beam 520, having a larger tool operation space and improving the convenience of the locking assembly of the support node for the main cable 60.

[0051] Furthermore, as Figure 1 and Figure 5As shown in the figure, an embodiment of the present invention further provides a middle bracket, which includes a bracket column 510 for fixedly connecting to the ground, and a cross beam 520 fixedly arranged on the bracket column 510. In particular, several bracket nodes provided in any of the above embodiments are arranged on the cross beam 520. It should be noted that the bracket nodes are arranged according to the number of photovoltaic panels set and the bearing strength of the cross beam 520. The several bracket nodes are arranged at intervals so that the main cables 60 are arranged at intervals to meet the bearing requirements of the photovoltaic panels. And since the above bracket nodes have the technical effects provided in any of the above embodiments, this middle bracket also has the above technical effects, which will not be elaborated herein again.

[0052] Furthermore, an embodiment of the present invention further provides a method for installing a bracket node for installing the bracket node provided in any of the above embodiments on a middle bracket. Specifically, the installation method at least includes the following steps:

[0053] S01: Pre-fix the main cable: After the main cable is tensioned, surround the main cable with a U-bolt and pass it through the cross beam. The main cable is located in the connection hole, and the U-bolt is in a non-locked state so that the main cable has freedom in the connection hole.

[0054] S02: Pre-install the steel wire rope: Fix one end of the steel wire rope to the main cable through a wire clip to form a fixed end. After passing the other free end of the steel wire rope through the connection hole, wrap it around the cross beam once and then pass it back through the connection hole to form a two-strand steel wire rope structure in the connection hole.

[0055] S03: Lock the steel wire rope: Set a first cable clamp at the free end position of the steel wire rope, and set a second cable clamp on the main cable passing through the connection hole. Tighten the two cable clamps towards each other until the steel wire rope is tightly combined with the cross beam and the cushion block in a state of full-circle fitting, and the free end of the steel wire rope is taut.

[0056] S04: Fix the main cable: Lock and fix the free end of the steel wire rope on the main cable through a wire clip, lock the U-bolt, and remove the cable clamp to complete the installation of the bracket node.

[0057] It should be noted that in step S03, the opposite tightening of the first cable clamp and the second cable clamp is realized by a chain block to achieve convenient locking of the steel wire rope under manual operation. And the distance between the first cable clamp and the second cable clamp in the length direction of the main cable is greater than that of the chain block to meet the smooth setting of the chain block. At the same time, during the process of realizing the opposite tightening of the first cable clamp and the second cable clamp by the chain block, when starting to lock, the chain block is in an obvious drooping state, and the chain block can be tightened at a relatively fast speed. When the steel wire rope starts to tighten and fit the cross beam, the chain block needs to be operated in a state of decelerated tightening to avoid breaking of the steel wire rope and the main cable due to over-tightening.

[0058] In addition, an embodiment of the present invention further provides a flexible photovoltaic system, which includes a photovoltaic panel and a main cable 60 for carrying the photovoltaic panel. In the span area of the main cable 60, a plurality of the middle brackets provided in the above embodiments are arranged at intervals to support the main cable 60 in a partitioned manner to meet the span requirement of the main cable 60. Since the above middle brackets have the technical effects provided in any of the above embodiments, this flexible photovoltaic system also has the above technical effects, which will not be elaborated herein again.

[0059] The above description is only a preferred embodiment of the present invention and an explanation of the applied technical principles, and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. The scope of the invention involved in the present invention is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present invention.

Claims

1. A bracket node, characterized in that, It includes a cushion block and a locking member. One side of the cushion block is arranged in contact with the cross beam on the bracket, and the side of the cushion block facing away from the cross beam is of an arc surface structure; the locking member passes through the cross beam and cooperates with the arc surface structure of the cushion block to form a connection hole, and the main cable passes through the connection hole and is locked to the cushion block; A limiting part is arranged in the connection hole. The limiting part passes through the connection hole and contacts the arc surface structure. The main cable is pressed by the locking member to the limiting part. The limiting part is a steel wire rope and at least two strands of the steel wire rope pass through the connection hole. The main cable contacts two strands of the steel wire rope at the same time and is fixedly connected with at least a part of the area of the steel wire rope; the projection of the steel wire rope in the length direction of the main cable extends beyond both sides of the cross beam, and the areas where the steel wire rope extends beyond both sides of the cross beam are respectively fixedly connected with the main cable through wire rope clips.

2. The bracket node according to claim 1, wherein, The arc surface structure is a partial cylindrical surface structure, and the axis of the arc surface structure is perpendicular to the length direction of the main cable.

3. The bracket node according to claim 1, characterized in that, Two steel wire ropes are arranged in parallel and both pass through the connection hole.

4. The bracket node according to claim 1, characterized in that, A single steel wire rope is arranged, and the single steel wire rope extends along the length direction of the main cable and continues to extend after surrounding the cross beam in the connection hole for one circle.

5. The bracket node according to claim 2, wherein, The steel wire rope contacts the cushion block and presses the main cable to the locking member, and the axis connection line of the two strands of the steel wire rope contacted by the main cable is an isosceles triangle.

6. The bracket node according to claim 2, wherein, The steel wire rope contacts the locking member and presses the main cable to the cushion block, and the axis connection line of the two strands of the steel wire rope contacted by the main cable is an isosceles triangle.

7. The bracket node according to claim 1, wherein, The size of the side of the cushion block in contact with the cross beam in the length direction of the main cable is larger than that of the cross beam, and it is attached to the edge of the cross beam through a bending structure.

8. A middle bracket, characterized in that It includes a bracket column and a cross beam. The cross beam is fixedly arranged on the bracket column, and several bracket nodes as described in any one of claims 1-7 are arranged on the cross beam.

9. An installation method for a bracket node, which is used to install the bracket node as described in any one of claims 1-7 on a middle bracket. The installation method at least includes the following steps: Pre-fix the main cable: After the main cable is tensioned, surround the main cable with a U-bolt and pass it through the cross beam. The main cable is located in the connection hole, and the U-bolt is in a non-locked state so that the main cable has freedom in the connection hole; Pre-install the steel wire rope: Fix one end of the steel wire rope to the main cable through a wire rope clip to form a fixed end, and pass the other free end of the steel wire rope through the connection hole, then wind it around the cross beam for one circle, and then pass it back through the connection hole to form a two-strand steel wire rope structure in the connection hole; Lock the steel wire rope: Set a first cable clamp at the free end position of the steel wire rope, and set a second cable clamp on the main cable passing through the connection hole. Tighten the two cable clamps towards each other until the steel wire rope is tightly combined with the cross beam and the cushion block in a state of being in full contact, and the free end of the steel wire rope is taut; Fix the main cable: Lock and fix the free end of the steel wire rope on the main cable through a wire rope clip, lock the U-bolt, and remove the cable clamp to complete the installation of the bracket node.

10. The installation method of the bracket node according to claim 9, characterized in that, In the step of locking the wire rope, the opposite tension of the first cable gripper and the second cable gripper is realized by a chain block, and the distance between the first cable gripper and the second cable gripper in the length direction of the main cable is greater than that of the chain block.

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