Self-tightening, winding and tensioning device for fiber woven mesh

Abstract

The utility model relates to the technical field of prestressed composite board reinforcement, and provides a fiber woven mesh self-tightening, winding and tensioning device which comprises a rotating rod for winding the free end of a fiber woven mesh and a driving mechanism for driving the rotating rod to rotate so as to tension the fiber woven mesh, and the rotating rod is provided with a penetrating groove for the free end of the fiber woven mesh to penetrate. The tensioning device has the beneficial effect that the tensioning stroke of the fiber woven mesh is increased.

Description

Technical Field

[0001] The present application relates to the technical field of prestressed composite plate reinforcement, and in particular to a fiber woven mesh self-twisting winding tensioning device. Background Art

[0002] Textile Reinforced Concrete (TRC) is a new high-performance composite material made of a combination of fiber mesh and fine-grained concrete. It has the advantages of high bearing capacity, high toughness, corrosion resistance, anti-magnetization, light weight and high strength. When making fiber mesh reinforced concrete panels, glass fiber mesh or carbon fiber mesh is often just laid in the formwork without applying prestress to it. Due to the low elastic modulus of the above-mentioned fiber materials, when the TRC panel is destroyed, the fiber mesh inside it is far from reaching its breaking strength, and the advantage of the high tensile strength of the fiber cannot be fully utilized. Applying prestress to the fiber mesh can solve this problem to a certain extent.

[0003] Relevant studies at home and abroad have pointed out that the ultimate bearing capacity of prestressed fiber woven mesh reinforced concrete slabs is significantly improved. At the same time, after applying prestress, the crack development mechanism of the slab can be delayed, the cracking load of the slab can be increased, the cracks of the slab can be made finer, and the crack resistance, impermeability and corrosion resistance of the slab can be improved.

[0004] In the currently known fiber mesh tensioning devices, the fiber mesh is pushed by a jack to apply prestress to the fiber mesh. However, when a larger prestress is required, the required pushing path is longer, and the pushing stroke of the jack is limited. The prestress that can be applied is also relatively limited, which is particularly obvious when tensioning larger or more multi-layered fiber meshes. Therefore, further improvement is needed. Utility Model Content

[0005] In order to increase the tensioning stroke of the fiber woven mesh, the present application provides a fiber woven mesh self-tightening and winding tensioning device.

[0006] The present application provides a fiber braided mesh self-tightening winding and tensioning device, which adopts the following technical solution:

[0007] A fiber woven net self-tightening winding and tensioning device comprises a rotating rod for winding the free end of the fiber woven net and a driving mechanism for driving the rotating rod to rotate to tension the fiber woven net. The rotating rod has a through slot for the free end of the fiber woven net to pass through.

[0008] By adopting the above technical solution, the free end of the fiber woven net is passed through the groove and then wound on the rotating rod. As the rotating rod rotates, the fiber woven net covers its own free end and is wound. Since the groove is provided, the edge between the groove and the outer peripheral wall of the rotating rod is used to increase the friction with the fiber woven net. In the process of the fiber woven net being wound on the rotating rod, the possibility of the fiber woven net slipping and detaching is reduced, and the fiber woven net is tensioned to apply prestress. Since the rotation of the rotating rod is longer than the pushing path of the jack, the tensioning stroke of the fiber woven net can be increased.

[0009] Preferably, two rotating rods are provided, which are respectively the first rotating rod and the second rotating rod, the gap left between the first rotating rod and the second rotating rod is the through groove, the free end of the fiber woven net includes a front end, a middle end and a rear end in the direction close to itself, the front end is wound around the second rotating rod, the middle end is penetrated through the through groove, the rear end is wound around the first rotating rod, and the part of the fiber woven net away from its free end is wound around the outer peripheral wall of the first rotating rod and the second rotating rod.

[0010] By adopting the above technical solution, two rotating rods are provided, and the groove formed between the two rotating rods is for the fiber woven mesh to pass through. In addition, two rotating rods are provided. For one rotating rod, the amount of the fiber woven mesh that can be pulled by one rotation is increased, which can increase the range of the prestress formed when the woven mesh rotates one rotation, and can also increase the rate of applying the prestress.

[0011] Preferably, there are three rotating rods, which are arranged parallel to each other, and the three rotating rods are respectively a first rotating rod, a second rotating rod and a third rotating rod, and the gaps between the first rotating rod, the second rotating rod and the third rotating rod are the through grooves, and the free end of the fiber woven mesh includes a front end, a middle end and a rear end in the direction close to itself, respectively, the front end is wound around the gap between the first rotating rod and the second rotating rod and the gap between the first rotating rod and the third rotating rod, the middle end is wound around the outer peripheral wall of the third rotating rod, and the rear end is wound around the gap between the second rotating rod and the third rotating rod and the gap between the first rotating rod and the second rotating rod.

[0012] By adopting the above technical solution, three rotating rods are provided, the front end is wound around the gap between the first rotating rod and the second rotating rod and the gap between the first rotating rod and the third rotating rod, the middle end is wound around the outer peripheral wall of the third rotating rod, and the rear end is wound around the gap between the second rotating rod and the third rotating rod and the gap between the first rotating rod and the second rotating rod, so that the fiber woven net passes through the gaps between the three rotating rods in a "J" shape, driving the three rotating rods to rotate continuously, and the fiber woven net begins to be wound around the outside of the three rotating rods and becomes tighter and tighter. In this way, while ensuring that the fiber woven net will not slip off under a large tensioning force, the amount of fiber woven net that can be pulled by one rotation can be further increased, so as to further increase the range of prestress formed when the woven net rotates one circle, and the possibility of slipping and detaching of the limited woven net during the tightening process can be reduced.

[0013] Preferably, the rotating rod is detachably connected to the driving mechanism, the output shaft of the driving mechanism is fixedly connected to the chassis, the end surface of the chassis away from the driving mechanism is provided with a first mounting groove for the rotating rod to slide through, and the chassis is provided with a fixing part for fixing the rotating rod.

[0014] By adopting the above technical solution, the driving mechanism drives the chassis to rotate, thereby driving the rotation of a plurality of rotating rods.

[0015] Preferably, the diameter of the first mounting groove is larger than the diameter of the rotating rod.

[0016] By adopting the above technical solution, the size of the first installation groove is larger than the diameter of the rotating rod, so that before prestress is applied, there is a certain movable gap in the first installation groove of the rotating rod to facilitate the fiber woven mesh to pass through the gap to complete the initial winding.

[0017] Preferably, adjacent first mounting grooves are connected to each other.

[0018] By adopting the above technical solution, since the adjacent mounting grooves are interconnected, during the tensioning process of the fiber woven mesh, the adjacent rotating rods are driven to press towards each other so as to be tightly wound together to form a whole. During the rotation of the rotating rods, the fiber woven mesh is wound around the outside of the three rotating rods and twisted tighter and tighter, thereby ensuring that the fiber woven mesh will not slip off under a large tensioning force and increasing the tensioning stroke of the fiber woven mesh.

[0019] Preferably, a second mounting groove connected to the first mounting groove is formed on the end surface of the chassis away from the driving mechanism, and the second mounting groove extends to the outer peripheral wall of the chassis, and the fixing member includes a cover slidably inserted in the second mounting groove and a limiting strip arranged on the side wall of the cover; a limiting groove for the limiting strip to be slidably inserted is formed on the inner wall of the first mounting groove, and the limiting groove extends to the end surface of the chassis, and the thickness of the limiting strip gradually increases in the direction away from the driving mechanism, and the cover is elastic.

[0020] By adopting the above technical solution, since the thickness of the limit bar gradually increases in the direction away from the driving mechanism, as the limit bar slides and connects to the second mounting groove, and since the cover is elastic, it moves in the direction of the rotating rod, forcing multiple rotating rods to move in the direction close to each other, so as to improve the connection strength between the rotating rod and the chassis, reduce the possibility of slippage and detachment due to external force, and after the fiber woven mesh is passed through the through groove, the cover can be pushed to move in the direction close to the driving mechanism, so as to clamp the free end of the fiber woven mesh passed through the through groove.

[0021] Preferably, the outer peripheral wall of the rotating rod is protrudingly provided with convex points.

[0022] By adopting the above technical solution, the convex points are provided to increase the friction between the fiber woven mesh and the fiber woven mesh, thereby reducing the possibility of the fiber woven mesh slipping and detaching.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. The rotating rod and the groove are provided to increase the friction with the fiber mesh, reduce the possibility of the fiber mesh slipping and detaching during the process of winding the fiber mesh around the rotating rod, and tension the fiber mesh to apply prestress. Since the rotation of the rotating rod is longer than the pushing path of the jack, the tensioning stroke of the fiber mesh can be increased.

[0025] 2. Providing a plurality of rotating rods can increase the amount of fiber mesh that can be pulled after the rotating rod rotates one circle, so as to further increase the range of prestress formed when the mesh rotates one circle, and reduce the possibility of slippage and detachment of the limited mesh during the tightening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0027] Figure 2 is a schematic diagram of the structure of the driving mechanism in Example 1 of the present application;

[0028] Figure 3 is a schematic structural diagram of a rotating rod in Example 1 of the present application;

[0029] Figure 4 It is a schematic diagram of the structure of two rotating rods in Example 1 of the present application;

[0030] Figure 5 is a schematic diagram of the structure of three rotating rods in Example 1 of the present application;

[0031] Figure 6 is a schematic structural diagram of the chassis in Example 1 of the present application;

[0032] Figure 7 It is a structural diagram of Example 2 of the present application.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. Fiber woven mesh; 11. Front end; 12. Middle end; 13. Rear end; 2. Rotating rod; 21. First rotating rod; 22. Second rotating rod; 23. Third rotating rod; 3. Driving mechanism; 31. Worm gear reducer; 32. Driving member; 33. Mounting plate; 34. Bolt; 35. Nut; 4. Groove; 5. Chassis; 51. Drive belt key shaft; 52. First mounting groove; 53. Second mounting groove; 531. Limiting groove; 6. Fixing member; 61. Cover; 62. Limiting strip; 7. Bump. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 , further details of this application are given.

[0035] The embodiment of the present application discloses a fiber woven mesh self-tightening winding and tensioning device.

[0036] Embodiment 1:

[0037] A fiber woven mesh self-tightening winding and tensioning device, referring to Figure 1 , Figure 2 , including a rotating rod 2 for winding the free end of the fiber woven net 1 and a driving mechanism 3 for driving the rotating rod 2 to rotate to tension the fiber woven net 1, wherein the rotating rod 2 has a through slot 4 for the free end of the fiber woven net 1 to pass through. In this embodiment, a plurality of rotating rods 2 are provided, and the rotating rods 2 can be provided with one, two or more than three, and the number of rotating rods 2 is set according to demand.

[0038] Reference Figure 3 When only one rotating rod 2 is provided, the through groove 4 is a through groove radially extending through the outer wall of the rotating rod 2 , and the length direction of the through groove 4 is parallel to the length direction of the rotating rod 2 .

[0039] Reference Figure 4When two rotating rods 2 are provided, the two rotating rods 2 are arranged parallel to each other. For the convenience of distinction, in this embodiment, the two rotating rods 2 are respectively a first rotating rod 21 and a second rotating rod 22. The gap left between the first rotating rod 21 and the second rotating rod 22 is a through groove 4. The free end of the fiber woven net 1 includes a front end 11, a middle end 12 and a rear end 13 in the direction away from itself. The front end 11 is wound around the second rotating rod 22 or the first rotating rod 21, specifically around the second rotating rod 22, the middle end 12 is penetrated through the through groove 4, and the rear end 13 is wound around the first rotating rod 21. The part of the fiber woven net 1 away from its free end is wound around the outer peripheral wall of the first rotating rod 21 and the second rotating rod 22, and the part of the fiber woven net 1 away from the free end is wound around the outer peripheral wall of the first rotating rod 21 and the second rotating rod 22.

[0040] Back to Figure 2 , Figure 5 When three rotating rods 2 are provided, the three rotating rods 2 are arranged parallel to each other, and the three rotating rods 2 are arranged in a triangular stack. For the convenience of distinction, in this embodiment, the three rotating rods 2 are respectively a first rotating rod 21, a second rotating rod 22 and a third rotating rod 23, and the gaps between the first rotating rod 21, the second rotating rod 22 and the third rotating rod 23 are through grooves 4. At this time, the front end 11 of the fiber woven net 1 is wound around the gap between the first rotating rod 21 and the second rotating rod 22 and the gap between the first rotating rod 21 and the third rotating rod 23, the middle end 12 of the fiber woven net 1 is wound around the outer peripheral wall of the third rotating rod 23, and the rear end 13 of the fiber woven net 1 is wound around the gap between the second rotating rod 22 and the third rotating rod 23 and the gap between the first rotating rod 21 and the second rotating rod 22, so that the fiber woven net 1 passes through the through grooves 4 between the three rotating rods 2 in a "J" shape, and the part of the fiber woven net 1 away from the free end is wound around the outer peripheral walls of the first rotating rod 21, the second rotating rod 22 and the third rotating rod 23.

[0041] Back to Figure 1 , Figure 2 The driving mechanism 3 is provided with two and is respectively arranged at the two ends of a plurality of rotating rods 2, and is symmetrically arranged. In this embodiment, the driving mechanism 3 specifically includes a worm gear reducer 31 and a driving member 32 driving the worm gear reducer 31. The driving member 32 can be driven by a hand wheel or a motor. Since the driving mechanism 3 is a prior art, it will not be described in detail here. It should be noted that the bottom wall of the worm gear reducer 31 is fixedly connected with a mounting plate 33, and a bolt 34 is passed through the mounting plate 33. The bolt 34 is threadedly connected with a nut 35 so as to be connected to a frame for making a composite board or to the ground.

[0042] Reference Figure 2 , Figure 6As for the connection between the rotating rod 2 and the driving mechanism 3, in this embodiment, the rotating rod 2 is detachably connected to the driving mechanism 3, specifically three rotating rods 2 are used for demonstration, and the output shaft of the worm gear reducer 31 is provided with a chassis 5, and the surface of the chassis 5 close to the worm gear reducer 31 is protrudingly provided with a transmission belt key shaft 51, which is fixedly connected with the output shaft of the worm gear reducer 31 to drive the chassis 5 to rotate. The end surface of the chassis 5 away from the driving mechanism 3 is provided with a first mounting groove 52 for the rotating rod 2 to slide through, and the number of the first mounting grooves 52 is the same as the number of the rotating rod 2, and there are also three first mounting grooves 52. The diameter of the first mounting groove 52 is larger than the diameter of the rotating rod 2, and the diameter ratio between the first mounting groove 52 and the rotating rod 2 is between 1.01-1.1, specifically 1.05, and the adjacent first mounting grooves 52 are connected to each other, and the distance between the bottoms of the first mounting grooves 52 between the two chassis 5 is the same as the length of the rotating rod 2, so as to reduce the possibility of the rotating rod 2 sliding out of the first mounting groove 52.

[0043] The chassis 5 is provided with a fixing member 6 for fixing the rotating rod 2. In this embodiment, the fixing member 6 specifically includes a cover 61 and a limit strip 62 fixedly connected to the side wall of the cover 61. In this embodiment, the cover 61 is elastic, and the thickness of the limit strip 62 gradually increases in the direction away from the driving mechanism 3. The end surface of the chassis 5 away from the driving mechanism 3 is provided with a second mounting groove 53 connected to the first mounting groove 52. The second mounting groove 53 extends to the outer peripheral wall of the chassis 5. The cover 61 is slidably inserted in the second mounting groove 53. The inner wall of the first mounting groove 52 is provided with a limit slot 531 for the limit strip 62 to be slidably inserted. The limit slot 531 extends to the end surface of the chassis 5.

[0044] The implementation principle of a fiber woven mesh self-tightening and winding tensioning device in an embodiment of the present application is as follows: when the worm gear reducer 31 and the chassis 5 are installed, the two chassis 5 should be installed on the same axis and relative to each other; then, the two ends of the three rotating rods 2 are respectively inserted from the second installation grooves 53 set on the side of the chassis 5 into the first installation grooves 52 of the chassis 5 on both sides, and the angles of the two chassis 5 are adjusted to ensure that the three rotating rods 2 are set horizontally, and then the cover 61 and the limit strip 62 set on the cover 61 are respectively inserted into the second installation groove 53 and the limit groove 531 along the axial direction of the chassis 5 to install the tensioning device.

[0045] Then, the fiber braided net 1 is passed through the through slots 4 between the three rotating rods 2 in a "J" shape, and the driving member 32 is started so that the two worm gear reducers 31 drive the three rotating rods 2 to rotate, so that the fiber braided net 1 begins to be wound around the outside of the three rotating rods 2 and twists tighter and tighter to perform prestressing. After the tensioning is completed, the fiber braided net 1 is cut off, and the remaining fiber braided net 1 is removed from the three rotating rods 2. In the same way, the fiber braided net 1 is passed through the through slots 4 between the three rotating rods 2 in a "J" shape and the winding is completed, and the next tensioning can be performed.

[0046] Embodiment 2:

[0047] Reference Figure 7 The difference from Example 1 is that a convex point 7 is protruding from the outer peripheral wall of the rotating rod 2, and the convex point 7 is an elastic convex point 7. There are several convex points 7 along the axis of the rotating rod 2, and several convex points 7 are arranged at intervals along the length direction of the rotating rod 2. It should be noted that for a rotating rod 2, a convex point 7 is also provided on the inner wall of the through groove 4.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fiber woven mesh self-tightening winding and tensioning device, characterized in that: It comprises a rotating rod (2) around which the free end of a fiber woven net (1) is wound, and a driving mechanism (3) for driving the rotating rod (2) to rotate so as to tension the fiber woven net (1), wherein the rotating rod (2) has a through slot (4) through which the free end of the fiber woven net (1) is passed.

2. A fiber mesh self-tightening winding and tensioning device according to claim 1, characterized in that: Two rotating rods (2) are provided, the two rotating rods (2) are respectively a first rotating rod (21) and a second rotating rod (22); a gap between the first rotating rod (21) and the second rotating rod (22) is the through groove (4); the free end of the fiber woven net (1) comprises a front end (11), a middle end (12) and a rear end (13) in a direction away from the free end of the fiber woven net (1); the front end (11) is wound around the second rotating rod (22) or the first rotating rod (21); the middle end (12) is penetrated through the through groove (4); the rear end (13) is wound around the first rotating rod (21); and a portion of the fiber woven net (1) away from the free end thereof is wound around the outer peripheral wall of the first rotating rod (21) and the second rotating rod (22).

3. The fiber woven mesh self-tightening winding and tensioning device according to claim 1, characterized in that: The rotating rods (2) are provided with three members, the three rotating rods (2) are arranged parallel to each other, the three rotating rods (2) are respectively a first rotating rod (21), a second rotating rod (22) and a third rotating rod (23), the gaps between the first rotating rod (21), the second rotating rod (22) and the third rotating rod (23) are the through grooves (4), the free ends of the fiber braided mesh (1) respectively comprise a front end (11), a middle end (12) and a rear end (13) in a direction away from the free end of the fiber braided mesh (1), the front end (11) is arranged around the gap between the first rotating rod (21) and the second rotating rod (22) and the gap between the first rotating rod (21) and the third rotating rod (23), the middle end (12) is arranged around the outer peripheral wall of the third rotating rod (23), and the rear end (13) is arranged around the gap between the second rotating rod (22) and the third rotating rod (23) and the gap between the first rotating rod (21) and the second rotating rod (22).

4. A fiber woven mesh self-tightening winding and tensioning device according to claim 2 or 3, characterized in that: The rotating rod (2) is detachably connected to the driving mechanism (3); the output shaft of the driving mechanism (3) is fixedly connected to a chassis (5); an end surface of the chassis (5) away from the driving mechanism (3) is provided with a first mounting groove (52) for the rotating rod (2) to slide through; and a fixing member (6) for fixing the rotating rod (2) is provided on the chassis (5).

5. The fiber woven mesh self-tightening winding and tensioning device according to claim 4, characterized in that: The diameter of the first mounting groove (52) is greater than the diameter of the rotating rod (2).

6. A fiber woven mesh self-tightening winding and tensioning device according to claim 5, characterized in that: Adjacent first installation grooves (52) are connected to each other.

7. The fiber woven mesh self-tightening winding and tensioning device according to claim 6, characterized in that: The end surface of the chassis (5) away from the driving mechanism (3) is provided with a second mounting groove (53) connected to the first mounting groove (52), the second mounting groove (53) extending to the outer peripheral wall of the chassis (5), the fixing member (6) comprising a cover (61) slidably inserted in the second mounting groove (53) and a limit strip (62) arranged on the side wall of the cover (61); the inner wall of the first mounting groove (52) is provided with a limit groove (531) for the limit strip (62) to be slidably inserted, the limit groove (531) extending to the end surface of the chassis (5), the thickness of the limit strip (62) gradually increases in a direction away from the driving mechanism (3), and the cover (61) is elastic.

8. The fiber woven mesh self-tightening winding and tensioning device according to claim 1, characterized in that: The outer peripheral wall of the rotating rod (2) is protrudingly provided with a convex point (7).

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