A tensioning device suitable for construction of a cable glass curtain wall

Abstract

This invention discloses a tensioning device suitable for cable-stayed glass curtain wall construction, comprising: a tensioning mechanism for tensioning the curtain wall cables; and a lifting mechanism for providing a tensioning force source. A support assembly is provided between the lifting mechanism and the tensioning mechanism, the support assembly including a movable support that leverages the lifting mechanism and the tensioning mechanism. By employing a lever-structured arrangement of the lifting mechanism and the tensioning mechanism to tension the cables, precise tensioning force adjustment can be achieved simply by adjusting the lifting height of the lifting mechanism, relying on the lever arm ratio of the lever structure.

Description

Technical Field

[0001] This invention relates to the field of glass curtain wall installation technology, and in particular to a tensioning device suitable for cable-stayed glass curtain wall construction. Background Technology

[0002] In the current installation of cable-stayed glass curtain walls, the entire glass curtain wall is connected by cable-stayed points. Specifically, the glass panels are fixed to the truss with steel claws. The glass panels are fixed by point-supported steel claws installed on the cable structure. After grouting, the curtain wall system is finally formed.

[0003] For example, existing technology discloses a cable-net supported glass curtain wall and its construction method, application number CN201811051605.8, which includes a cable net system, several embedded iron parts, a cable tensioning system, and a curtain wall hoisting system located at the top of the main structure; the cable tensioning system is used to adjust the tension of the cables in the cable net system, the cable net system is used to fix the glass, and the curtain wall hoisting system is used to hoist the glass; the embedded iron parts include steel plates and embedded reinforcing bars fixed on the steel plates; spiral plates are fixed on the embedded reinforcing bars; ear plates are fixed at the bottom of the steel plates, and the cable tensioning system is located at the bottom of the ear plates; the steel plates and embedded reinforcing bars are embedded in the floor slab of the main structure.

[0004] In the above scheme, the connector is fixed to the glass, and then the connector is connected to the connector claw to form an integral part of the cable net system. The glass curtain wall is tensioned in conjunction with the cable tensioning system. However, it is difficult to adjust the tension force in this scheme, and it is difficult to make fine adjustments when it is adjusted to near the preset value, resulting in poor applicability. Summary of the Invention

[0005] In view of the problem mentioned in the background art that the pretension force adjustment of the cables in the glass curtain wall is difficult to adjust accurately, this application provides a tensioning device suitable for the construction of cable-stayed glass curtain walls. The device uses a lifting mechanism and a tensioning mechanism arranged in a lever structure to tension the cables. When adjusting the tension force, only the lifting height of the lifting mechanism needs to be adjusted. The precise tension force adjustment can be achieved by relying on the lever arm ratio of the lever structure.

[0006] To achieve the above objectives, a tensioning device suitable for cable-stayed glass curtain wall construction is disclosed, comprising: a tensioning mechanism for tensioning the curtain wall cables; and a lifting mechanism for providing a tensioning force source. A support assembly is provided between the lifting mechanism and the tensioning mechanism, the support assembly including a movable support that leverages the lifting mechanism and the tensioning mechanism. By using a common device like the lifting mechanism in conjunction with the tensioning mechanism to form a lever, the stabilizing force provided by the lifting mechanism is transferred to the cables of the glass curtain wall. This allows for cable tension adjustment to be completed by a single operator, making operation lightweight and convenient. Furthermore, the tension length of the cables can be quantified according to the lifting height of the lifting mechanism during adjustment, ensuring that the degree of tension adjustment meets the design prestress value requirements.

[0007] Furthermore, the support assembly also includes a base; a first screw and a second screw facing each other are respectively provided on the movable support and the base, and a first adjusting sleeve is provided between the first screw and the second screw. The base serves as both the tensioning mechanism and the lifting mechanism, both of which are mounted on the base. The fixing point of the second screw on the base can be adjusted between the lifting mechanism and the tensioning mechanism, thereby changing the ratio of the two lever arms of the lever structure, and thus determining the tensioning length range according to the tension of the cable, effectively improving the versatility of the tensioning device. The first screw and the second screw are connected by the first adjusting sleeve. By rotating the first adjusting sleeve, the length by which the first screw and the second screw are screwed into the first adjusting sleeve can be changed, thereby adjusting the height of the entire support assembly. If the lifting mechanism adjusts the lifting height too high and generates bending moment, the height of the entire support assembly can be adjusted to keep the tensioning mechanism in a state of holding the cable in place for tension adjustment.

[0008] Preferably, the lifting mechanism includes a lifting device mounted on a base. The lifting device includes a base and a lifting rod mounted on the base, the lifting rod being hinged to a movable support. The lifting device includes, but is not limited to, lifting equipment such as jacks and hydraulic pumps, and is capable of precisely adjusting the height of the lifting rod to control the operation of the lever structure.

[0009] Preferably, the tensioning mechanism includes a cable connection part and a tensioning part. The connection part includes a through hole disposed on the movable support, and a limiting groove is provided at the end of the through hole near the base. The tensioning mechanism includes a connecting cylinder installed at the end of the cable after the cable passes through the through hole, and the end of the connecting cylinder away from the base abuts against the limiting groove. The connection part is used to connect the cable, while the tensioning part is used to connect the embedded part. The connecting cylinder abuts against the bottom of the limiting groove. When the lifting mechanism lifts the cable, the limiting groove presses down on the connecting cylinder, causing the cable to be pressed down and tightened, thus completing the cable tensioning.

[0010] Preferably, the limiting groove is provided with a prefabricated clamp, which includes a first clamping block and a second clamping block fitted into the limiting groove. A cable hole is provided between the first and second clamping blocks, and the connecting cylinder abuts against the prefabricated clamp near the base. The prefabricated clamp is used to limit the cable, ensuring that the friction between the cable and the movable base is borne by the prefabricated clamp during tensioning. After long-term use, the relative distance between the connecting cylinder and the prefabricated clamp can be maintained by replacing the prefabricated clamp, thereby ensuring that the prestress value of the cable is controlled within a suitable range.

[0011] Furthermore, a wedge-shaped surface is provided on the side of the second locking block away from the first locking block, and the wedge-shaped surface can be wedged into the limiting groove. During the process of the cable being pressed down, the second locking block is wedged into the limiting groove by the tension force to complete the stable installation, so that the diameter of the cable hole between the first and second locking blocks forms a preset diameter, that is, it engages with the cable, avoiding the problem of the cable hole being too large, which would cause frequent friction between the cable and the cable hole and result in a short life of the assembled locking component.

[0012] Preferably, the cable holes in the second locking block are distributed along a wedge-shaped surface away from the outer wall of the first locking block. The diameter of the cable holes in the thickness direction of the movable support is the same as the diameter of the cable, and the cable holes are arranged inclined outwards away from the outer wall of the first locking block. This structure ensures that when the lifting mechanism is working, the movable base is affected by the lever force. When the end with the limit groove swings downwards, the outer wall can make way for the cable in the vertical state, ensuring that it remains vertical and avoiding bending and damage to the cable when tension is applied, thus ensuring that the quality of the cable is not affected.

[0013] Preferably, the tensioning part includes an embedded part fixedly connected to the ground. A third screw and a fourth screw facing each other are respectively provided on the connecting cylinder and the embedded part. A second adjusting sleeve is provided between the third screw and the fourth screw. The tensioning part can also be adjusted in relative position by rotating the second adjusting sleeve, thereby adjusting the height between the embedded part and the limiting groove, so that the tensioning mechanism can adapt to the adjustment range of the entire tensioning device.

[0014] Furthermore, the base is a split structure, including a main base and a fixed base assembled at one end of the main base. A through hole is provided between the main base and the fixed base, and the fourth screw passes through the through hole and is connected to the embedded part. The base is assembled to the main base through the fixed base to fix the fourth screw, ensuring that the cable has an adjustment reference and is easy to assemble and disassemble.

[0015] Furthermore, a protective sleeve is provided at the end of the fourth screw near the base; a clearance groove is provided on the side of the through hole near the movable base, and the protective sleeve is inserted into the clearance groove. When the protective sleeve is not provided, during the continuous lifting process of the lifting mechanism, if the lower end of the connecting cylinder is pressed further down when it abuts the base, the connecting cylinder and the base will be squeezed together, causing damage to each other and endangering the structure of the entire tensioning device. If the damage is severe, it can lead to the collapse of the tensioning device and cause the cable to pop out, resulting in a safety accident. Therefore, by providing a protective sleeve between the connecting cylinder and the base, and ensuring that the protective sleeve can be pressed into the clearance groove to a certain depth, the operator is promptly reminded to stop tensioning and instead adjust the height of the tensioning device to avoid damage.

[0016] Therefore, the present invention has the following beneficial effects:

[0017] (1) The cable is tensioned by a lifting mechanism and a tensioning mechanism arranged in a lever structure. When adjusting the tension, only the lifting height of the lifting mechanism needs to be adjusted. The precise tension can be adjusted by relying on the lever arm ratio of the lever structure.

[0018] (2) Change the length of the first screw and the second screw screw into the first adjusting sleeve to adjust the height of the entire support assembly; adjust the relative position by rotating the second adjusting sleeve to adjust the height between the embedded part and the limiting groove;

[0019] (3) The fixing point of the second screw on the base can be adjusted between the lifting mechanism and the tensioning mechanism to change the ratio of the two lever arms of the lever structure, thereby determining the tensioning length range according to the tension of the cable, effectively improving the versatility of the tensioning device;

[0020] (4) The friction between the cable and the movable base is borne by the assembled clamp. After long-term use, the relative distance between the connecting cylinder and the assembled clamp can be maintained by replacing the assembled clamp, thereby ensuring that the prestress value of the cable is controlled within a suitable range.

[0021] (5) The outer wall of the cable hole is inclined outward away from the first clamping block. This can prevent the cable from bending and being damaged when tensioning is applied, thus ensuring that the quality of the cable is not affected. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Appendix Figure 2 yes Figure 1 Side view of the tensioning mechanism.

[0024] Appendix Figure 3 yes Figure 1 Side view of the central lifting mechanism.

[0025] Appendix Figure 4 yes Figure 1 Side view of the central support assembly.

[0026] Appendix Figure 5 yes Figure 1 Top view of the central base.

[0027] Appendix Figure 6 yes Figure 1 Top view of the assembled card component.

[0028] Appendix Figure 7 yes Figure 1 Bottom view of the assembled card component.

[0029] 100 Cable, 1. Tensioning mechanism, 11 Connecting part, 111 Through hole, 12 Tensioning part, 121 Embedded part, 122 Fourth screw, 123 Second adjusting sleeve, 13 Limiting groove, 14 Connecting sleeve, 141 Third screw, 2 Lifting mechanism, 21 Lifting device, 22 Seat, 23 Lifting rod, 24 Snap-fit ​​groove, 3 Support assembly, 31 Movable support, 311 First screw, 32 Base, 321 Second screw, 322 Main seat, 323 Fixed seat, 33 First adjusting sleeve, 34 Through hole, 4 Assembled clamp, 41 First clamping block, 42 ​​Second clamping block, 421 Wedge surface, 43 Cable hole, 431 Outer hole wall, 5 Protective sleeve, 6 Relief groove. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] like Figure 1 , 2 As shown in Figures 3 and 4, a tensioning device suitable for cable-stayed glass curtain wall construction includes: a tensioning mechanism 1 for tensioning the curtain wall cable 100; and a lifting mechanism 2 for providing a tensioning force source. A support assembly 3 is provided between the lifting mechanism and the tensioning mechanism. The support assembly includes a movable support 31 that lever-connects the lifting mechanism and the tensioning mechanism. The support assembly also includes a base 32. A first screw 311 and a second screw 321 facing each other are respectively provided on the movable support and the base. A first adjusting sleeve 33 connects the first screw and the second screw. The lifting mechanism includes a lifting device 21 mounted on the base. The lifting device includes a base 22 and a lifting rod 23 mounted on the base. The lifting rod is hinged to the movable support. In this embodiment, the base of the lifting mechanism includes bolts fixedly connected to the base and a steel plate disposed on the top of the bolts. The lifting device is disposed on the steel plate, and the edge of the steel plate is provided with a locking groove 24 for engaging the lifting device, ensuring that the lifting device is stably installed on the base.

[0033] By using a lifting mechanism or similar commonly used equipment in conjunction with the tensioning mechanism to form a lever, the stabilizing force provided by the lifting mechanism is transferred to the cables of the glass curtain wall. This allows for cable tension adjustment to be completed by a single operator, making operation simple and convenient. Furthermore, the tension length of the cable can be quantified according to the lifting height of the lifting mechanism, ensuring that the tension adjustment meets the design prestress requirements. Both the tensioning and lifting mechanisms are mounted on a base.

[0034] The lifting equipment includes, but is not limited to, jacks, hydraulic pumps, and other lifting devices, capable of precisely adjusting the height of the lifting rod to control the lever structure. The tensioning mechanism includes a cable connection section and a tensioning section. The connection section includes a through hole on a movable support, with a limit groove at the end of the through hole near the base. The tensioning mechanism includes a connecting sleeve installed at the end of the cable after it passes through the through hole, with the end of the connecting sleeve away from the base abutting against the limit groove. The connection section is used to connect the cable, while the tensioning section is used to connect embedded parts. The connecting sleeve rests against the bottom of the limit groove. When the lifting mechanism lifts the cable, the limit groove presses down on the connecting sleeve, causing the cable to be pressed down and tightened, thus completing the cable tensioning.

[0035] like Figure 6 , 7 As shown, a prefabricated clamping component 4 is provided within the limiting groove. The prefabricated clamping component includes a first clamping block 41 and a second clamping block 42, which are fitted and installed within the limiting groove. A cable hole 43 is provided between the first and second clamping blocks. A connecting cylinder abuts against the prefabricated clamping component near the base. A wedge-shaped surface 421 is provided on the side of the second clamping block away from the first clamping block, and the wedge-shaped surface can wedge into the limiting groove. The cable holes in the second clamping block are distributed along the wedge-shaped surface away from the outer wall 431 of the first clamping block.

[0036] The prefabricated clamps are used to limit the cable and ensure that the friction between the cable and the movable base is borne by the prefabricated clamps during the tensioning process. After long-term use, the relative distance between the connecting cylinder and the prefabricated clamps can be maintained by replacing the prefabricated clamps, thereby ensuring that the prestress value of the cable is controlled within a suitable range.

[0037] During the downward pressing of the cable, the second locking block is wedged into the limiting groove by the tension force to complete the stable installation. This makes the cable hole between the first and second locking blocks form a preset diameter, which engages with the cable. This avoids the problem of the cable hole being too large, which would cause frequent friction between the cable and the cable hole and result in a short lifespan of the assembled locking parts.

[0038] The diameter of the cable hole in the thickness direction of the movable support is the same as the diameter of the cable. The outer wall of the cable hole, away from the first locking block, is inclined outward. This structure ensures that when the lifting mechanism is working, the movable base is affected by the lever force. When the end with the limit groove swings downward, the outer wall can give way to the cable in the vertical state, ensuring that it remains vertical. This avoids the cable bending and damage when tension is applied to the cable, and ensures that the quality of the cable is not affected.

[0039] The tensioning part includes an embedded part fixedly connected to the ground. A third screw and a fourth screw, facing each other, are respectively installed on the connecting sleeve and the embedded part. A second adjusting sleeve is installed between the third screw and the fourth screw. For example... Figure 5 As shown, the base is a split structure, including a main base 322 and a fixed base 323 assembled at one end of the main base. A through hole 34 is provided between the main base and the fixed base, and the main base and the fixed base are fixed by bolts. A fourth screw passes through the through hole and is connected to the embedded part 121. A protective sleeve 5 is provided at the end of the fourth screw near the base; a clearance groove 6 is provided on the side of the through hole near the movable base, and the protective sleeve is inserted into the clearance groove.

[0040] The tensioning part can also be adjusted in relative position by rotating the second adjusting sleeve, thereby adjusting the height between the embedded part and the limiting groove, so that the tensioning mechanism can adapt to the adjustment range of the entire tensioning device. The base is assembled to the main base through a fixed seat to fix the fourth screw, ensuring that the cable has an adjustment reference and is easy to disassemble and assemble. When the protective sleeve is not set, if the lower end of the connecting cylinder is pressed down when it abuts the base during the continuous lifting process of the lifting mechanism, the connecting cylinder will be squeezed and damaged by the base, which will endanger the structure of the entire tensioning device. If the damage is serious, it will cause the tensioning device to collapse and the cable to pop out, resulting in a safety accident. Therefore, by setting a protective sleeve between the connecting cylinder and the base, and the protective sleeve can be pressed into the relief groove to a certain depth, the operator is promptly reminded to stop tensioning and instead adjust the height of the tensioning device to avoid damage to the tensioning device.

[0041] In this embodiment, during tensioning, the upper and lower parts of the cable are connected via a first adjusting sleeve, and the cable is simultaneously connected to the embedded parts via bolts. When the first adjusting sleeve cannot be turned manually, a tensioning device is required. First, the first locking block is placed in the limiting groove, then the steel wire rope, serving as the cable, is passed through the cable hole of the first locking block. Next, the second locking block is inserted, and the main base of the base is connected to the main base, with the protective sleeve installed. The lifting device begins to lift, forcing the sleeve on the cable to descend. Simultaneously, the first adjusting sleeve begins to rotate, turning the first screw and the second threaded rod into the first adjusting sleeve, thereby increasing the prestress of the cable.

[0042] In this embodiment, when the lifting height of the lifting device is too high, a bending moment will be generated. Therefore, the height can be adjusted by the second adjusting sleeve so that the assembled clamp can always be locked in the limiting groove. Finally, the operation is repeated until the cable reaches the design prestress value.

[0043] Example 2

[0044] In this embodiment, unlike Embodiment 1, the fixing point of the second screw on the base can be adjusted between the lifting mechanism and the tensioning mechanism. This changes the ratio of the two lever arms in the lever structure, thereby determining the tensioning length range based on the cable tension and effectively improving the versatility of the tensioning device. Specifically, when the second screw and the entire support assembly are moved closer to the lifting mechanism, the power arm in the lever structure shortens while the resistance arm increases. At this time, by controlling the power output value of the lifting device, the cable tension ratio can be increased. That is, the closer the support assembly is to the lifting mechanism, the greater the cable tensioning length when the lifting device lifts to the same height; and vice versa. After this adjustable lever structure fulcrum position is applied to the tensioning device, the operator can adjust the position of the support assembly according to the prestress value range of the cable, thereby obtaining a larger adjustment range without changing the tensioning device. The first screw and the second screw are connected by a first adjusting sleeve. By rotating the first adjusting sleeve, the length by which the first screw and the second screw are screwed into the first adjusting sleeve can be changed, thereby adjusting the height of the entire support assembly. If the lifting mechanism raises the height too high and causes bending moment, the height of the entire support assembly can be adjusted to keep the tensioning mechanism in a state where the cable is locked and the tension is adjusted.

Claims

1. A tensioning device suitable for cable-stayed glass curtain wall construction, characterized in that, include: Tensioning mechanism, used to tension curtain wall cables; The lifting mechanism is used to provide the tension force source; A support assembly is provided between the lifting mechanism and the tensioning mechanism, and the support assembly includes a movable support that connects the lifting mechanism and the tensioning mechanism with a lever. The support assembly also includes a base; the movable support and the base are respectively provided with a first screw and a second screw facing each other, and a first adjusting sleeve is provided between the first screw and the second screw. The fixing point of the second screw on the base can be adjusted between the lifting mechanism and the tensioning mechanism, thereby changing the ratio of the two lever arms of the lever structure.

2. The tensioning device for cable-stayed glass curtain wall construction according to claim 1, characterized in that, The lifting mechanism includes a lifting device mounted on a base. The lifting device includes a base and a lifting rod mounted on the base. The lifting rod is hinged to a movable support.

3. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 1 or 2, characterized in that, The tensioning mechanism includes a connecting part and a tensioning part. The connecting part includes a through hole provided on the movable support, and a limiting groove is provided at the end of the through hole near the base. The tensioning mechanism includes a connecting cylinder installed at the end of the cable after the cable passes through the through hole, and the end of the connecting cylinder away from the base abuts against the limiting groove.

4. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 3, characterized in that, The limiting groove is provided with an assembly-type fastener, which includes a first fastener block and a second fastener block that are fitted into the limiting groove. A cable hole is provided between the first fastener block and the second fastener block. The connecting cylinder abuts against the side of the assembly-type fastener near the base.

5. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 4, characterized in that, The second card block has a wedge-shaped surface on the side away from the first card block, and the wedge-shaped surface can be wedged into the limiting groove.

6. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 4, characterized in that, The cable holes in the second card block are distributed along a wedge-shaped surface, away from the outer wall of the first card block.

7. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 3, characterized in that, The tensioning part includes an embedded part fixedly connected to the ground. The connecting cylinder and the embedded part are respectively provided with a third screw and a fourth screw facing each other. A second adjusting sleeve is provided between the third screw and the fourth screw.

8. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 7, characterized in that, The base is a split structure, including a main base and a fixed base assembled at one end of the main base. A through hole is provided between the main base and the fixed base, and the fourth screw passes through the through hole and is connected to the embedded part.

9. A tensioning device suitable for cable-stayed glass curtain wall construction according to claim 8, characterized in that, A protective sleeve is provided at one end of the fourth screw near the base; a clearance groove is provided on the side of the through hole near the movable base, and the protective sleeve is inserted into the clearance groove.

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