Tower prestressed cable connecting structure

Abstract

The invention relates to the technical field of prestressed cable connection, in particular to a tower prestressed cable connection structure. Due to the fact that a prestressed cable body is in a high stress state for a long time and is easily affected by the external environment, strength is reduced and even fractures are caused, the problem that stress distribution of anchoring nodes of the cable body and a tower is uneven exists, local deformation or relaxation is possibly caused, and the prestressed cable is locally deformed or relaxed. After the prestressed cable is loosened, structural deformation or bearing capacity reduction of a building is easily caused, and the overall structure is unbalanced. A tower prestressed cable connecting structure comprises a screw rod, a hook fixedly connected to the screw rod and a rotating ring connected to the screw rod through threads. When the sliding frame moves reversely, the sliding frame can drive the prestressed cable to move reversely under the action of the sliding rod and the buckling piece, then the prestressed cable is automatically tensioned when the prestressed cable is loosened, structural deformation or bearing capacity reduction of a building caused by stress looseness is avoided, and the balance state of the structure is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of prestressed cable connection, and particularly to a connection structure for prestressed cables of a tower. Background Art

[0002] In the modern engineering field, tall tower structures are widely used in industries such as wind power, communication, and power transmission. Taking an offshore wind power tower as an example, it needs to withstand the tests of strong winds, wave impacts, and complex geological conditions; a communication tower has to stably support antenna equipment in different climate environments to ensure stable signal transmission. With the continuous upgrading of engineering requirements, the height of the tower continues to increase and the loads are more complex, and the traditional structural forms are difficult to meet the requirements of safety and economy. The prestressed cable technology can actively adjust the stress state of the tower by pre-applying tension, significantly improving the structural stiffness and wind and seismic resistance performance, so it has become the core means to optimize the mechanical properties of the tower.

[0003] Since the prestressed cable body is in a high-stress state for a long time, it is easily affected by the external environment, resulting in a decrease in strength or even fracture. In addition, there is a problem of uneven stress distribution at the anchoring node between the cable body and the tower, which may cause local deformation or relaxation, leading to local deformation or relaxation of the prestressed cable. After the prestressed cable becomes loose, it is easy to cause structural deformation or a decrease in bearing capacity of the building, resulting in an imbalance of the overall structure. Summary of the Invention

[0004] To overcome the above disadvantages, the present invention provides a connection structure for prestressed cables of a tower, which can lock the prestressed cable when it becomes loose, prevent the excessive loosening amplitude from affecting the structural safety, and can reversely tighten the prestressed cable to keep the prestressed cable in a tightened state, improving the stability of the overall structure.

[0005] The technical implementation solution of the present invention is: a connection structure for prestressed cables of a tower, including: a screw rod, a hook fixed to the screw rod, a rotating ring threadedly connected to the screw rod, a fixing frame threadedly connected to the rotating ring, a sliding frame slidably connected to the fixing frame, a conical cylinder threadedly connected to the sliding frame, a clamping component provided on the conical cylinder, the prestressed cable passing through the conical cylinder and the sliding frame, a locking mechanism for locking the prestressed cable provided on the sliding frame, a tightening mechanism for tightening the prestressed cable provided on the fixing frame, and the tightening mechanism is connected to the fixing frame.

[0006] Further, the clamping component includes: three clamping blocks and a reinforcing rib. The three clamping blocks are fixed to the reinforcing rib, and the three clamping blocks clamp the prestressed cable through the reinforcing rib. The three clamping blocks and the reinforcing rib are both located inside the conical cylinder.

[0007] Furthermore, the locking mechanism includes: a sliding rod slidably connected to the sliding frame, a connecting frame fixedly connected to the sliding rod, two clamping blocks fixedly connected to the connecting frame, and a tension spring directly connecting the sliding rod and the sliding frame.

[0008] Furthermore, both of the two clamping blocks are obliquely arranged.

[0009] Furthermore, the tensioning mechanism includes: two fixed rods fixedly connected to the fixed frame, two connecting rods rotatably connected to the two fixed rods respectively, all four connecting rods slidably connected to the sliding rod, four sliding blocks slidably connected to the fixed frame, two fastening members fixed to the prestressed cable by screws, and the two fastening members are clamped with the sliding rod.

[0010] Furthermore, it further includes a limiting mechanism for stabilizing the prestressed cable, and the limiting mechanism includes: two rotating plates rotatably connected to the conical cylinder, and fixing plates fixedly connected to the two rotating plates respectively.

[0011] Furthermore, slots are formed in both of the two fixing plates.

[0012] Furthermore, it further includes an alarm mechanism for alarming, and the alarm mechanism includes: alarms arranged on both sides of the sliding frame, and buttons are arranged on both of the two alarms.

[0013] The present invention has the following advantages: 1. When the sliding rod moves, it will drive the sliding frame to move. When the connecting frame moves, it will drive the clamping blocks to move. When the clamping blocks move, the sliding frame will squeeze the two clamping blocks. When the pulling distance of the prestressed cable exceeds the safe range, the two clamping blocks will clamp the prestressed cable. At the same time, the sliding frame will resist the two clamping blocks, so that the prestressed cable will no longer move, thereby locking the prestressed cable when it becomes loose, and preventing the prestressed cable from loosening and detaching, enhancing the connection stability of the prestressed cable.

[0014] 2. When the sliding frame moves in the reverse direction, it will drive the prestressed cable to move in the reverse direction under the action of the sliding rod and the fastening member, thereby automatically tensioning the prestressed cable when it becomes loose, avoiding structural deformation or reduction of bearing capacity of the building caused by stress relaxation, and maintaining the balance state of the structure.

[0015] 3. When the safe range is exceeded, the button on the alarm will contact the fixed frame, triggering the alarm, thereby reminding the staff to make corresponding adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 is a partial three-dimensional structural schematic diagram of the present invention.

[0018] Figure 3 This is a partial exploded three-dimensional structural schematic diagram of the present invention.

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the tensioning mechanism of the present invention.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the limiting mechanism of the present invention.

[0022] Figure 7 This is a three-dimensional structural schematic diagram of the alarm mechanism of the present invention.

[0023] In the above drawings: 12, prestressed cable; 1, screw; 2, hook; 3, rotating ring; 4, fixing bracket; 5, sliding bracket; 6, conical cylinder; 7, clamping component; 8, locking mechanism; 81, sliding rod; 82, connecting frame; 83, clamping block; 84, tension spring; 9, tensioning mechanism; 91, fixed rod; 92, connecting rod; 93, sliding block; 94, fastening member; 10, limiting mechanism; 101, rotating plate; 102, fixing plate; 11, alarm mechanism; 111, alarm; 112, button. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] A connection structure for a tower prestressed cable, as Figures 1-3 shown, includes: a screw 1, a hook 2 fixedly connected to the screw 1, a rotating ring 3 threadedly connected to the screw 1, a fixing bracket 4 threadedly connected to the rotating ring 3, a sliding bracket 5 slidably connected to the fixing bracket 4, a conical cylinder 6 threadedly connected to the sliding bracket 5, a clamping component 7 provided on the conical cylinder 6, the prestressed cable 12 passing through the conical cylinder 6 and the sliding bracket 5, a locking mechanism 8 provided on the sliding bracket 5 for locking the prestressed cable 12, a tensioning mechanism 9 provided on the fixing bracket 4 for tensioning the prestressed cable 12, and the tensioning mechanism 9 is connected to the fixing bracket 4.

[0026] As Figure 3As shown, the clamping component 7 includes: three clamping blocks and one reinforcing rib. The three clamping blocks are fixedly connected to the reinforcing rib, and the three clamping blocks clamp the prestressed cable 12 through the reinforcing rib. Both the three clamping blocks and the reinforcing rib are located inside the conical cylinder 6.

[0027] As Figure 1 and Figure 4 shown, the locking mechanism 8 includes: a sliding rod 81 slidably connected to the sliding frame 5, a connecting frame 82 fixedly connected to the sliding rod 81, two clamping blocks 83 fixedly connected to the connecting frame 82. Both of the two clamping blocks 83 are obliquely arranged, and a tension spring 84 is directly connected between the sliding rod 81 and the sliding frame 5.

[0028] As Figure 1 and Figure 5 shown, the tensioning mechanism 9 includes: two fixed rods 91 fixedly connected to the fixed frame 4, two connecting rods 92 rotatably connected to the two fixed rods 91 respectively. The four connecting rods 92 are all slidably connected to the sliding rod 81, four sliding blocks 93 slidably connected to the fixed frame 4, the four connecting rods 92 are respectively slidably connected to the four sliding blocks 93, two fastening members 94 fixed to the prestressed cable 12 by screws, and the two fastening members 94 are clamped with the sliding rod 81.

[0029] When connecting the prestressed cable 12 is needed, the staff first passes the prestressed cable 12 through the conical cylinder 6, then sleaves the clamping block of the clamping component 7 and the reinforcing rib on the prestressed cable 12, and then fixes the two fastening components 94 at one end of the prestressed cable 12 through screws, and clamps the fastening component 94 with the sliding rod 81. Subsequently, hook the hook 2 on the anchor post, and the staff rotates the rotating ring 3 according to the tightness of the prestressed cable 12 through screws. The rotation of the rotating ring 3 will tighten the prestressed cable 12 under the action of the threads of the screw rod 1 and the sliding rod 81, completing the connection of the prestressed cable 12. When the prestressed cable 12 becomes loose due to thermal expansion and contraction or other factors, the prestressed cable 12 will pull outwards. The prestressed cable 12 will pull the sliding rod 81 to move through the fastening component 94, and the tension spring 84 will be stretched. When the sliding rod 81 moves, it will drive the sliding frame 5 to move. When the connecting frame 82 moves, it will drive the clamping block 83 to move. When the clamping block 83 moves, the sliding frame 5 will squeeze the two clamping blocks 83. When the pulling distance of the prestressed cable 12 exceeds the safety range, the two clamping blocks 83 will clamp the prestressed cable 12, and at the same time the sliding frame 5 will resist the two clamping blocks 83, making the prestressed cable 12 no longer move, thereby locking the prestressed cable 12 when it becomes loose, and at the same time preventing the prestressed cable 12 from loosening and detaching, enhancing the connection stability of the prestressed cable 12; when the sliding rod 81 moves, it will cause the connecting rod 92 to rotate around the fixed rod 91. When the connecting rod 92 rotates, it will push the sliding block 93 to move in the reverse direction. When the sliding block 93 moves in the reverse direction, it will push the sliding frame 5 to move in the reverse direction. When the sliding frame 5 moves in the reverse direction, it will drive the prestressed cable 12 to move in the reverse direction under the action of the sliding rod 81 and the fastening component 94, thereby automatically tightening the prestressed cable 12 when it becomes loose.

[0030] As Figure 1 and Figure 6 shown, it further includes a limiting mechanism 10 for stabilizing the prestressed cable 12. The limiting mechanism 10 includes: two rotating plates 101 rotatably connected to the conical cylinder 6, fixed plates 102 are respectively fixedly connected to the two rotating plates 101, chutes are opened on the two fixed plates 102, and the chutes on the two fixed plates 102 are used to prevent the prestressed cable 12 from deviating.

[0031] After the hook 2 is hooked on the anchor post, the two rotating plates 101 can be rotated so that the two fixed plates 102 clamp the prestressed cable 12 in the middle, and at the same time the prestressed cable 12 is fixed through screws, strengthening the stability and strength of the overall connection structure.

[0032] As Figure 1 and Figure 7 shown, it further includes an alarm mechanism 11 for alarming. The alarm mechanism 11 includes: alarm devices 111 arranged on both sides of the sliding frame 5, and buttons 112 are arranged on both alarm devices 111.

[0033] When the sliding plate moves in the opposite direction, the alarm 111 will be driven to move. When the safety range is exceeded, the button 112 on the alarm 111 will contact the fixing frame 4, triggering the alarm 111, thereby reminding the staff to make corresponding adjustments.

[0034] Working principle: First, pass the prestressed cable 12 through the conical cylinder 6, then put the block and rubber band of the clamping assembly 7 on the prestressed cable 12, and then fix the two fasteners 94 to one end of the prestressed cable 12 with screws, and clamp the fastener 94 with the sliding rod 81, then hook the hook 2 on the anchor column, and rotate the two rotating plates 101 so that the two fixed plates 102 clamp the prestressed cable 12 in the middle, and fix the prestressed cable 12 with screws to enhance the stability and strength of the overall connection structure. The staff adjusts the tightness of the prestressed cable 12 according to the screws. The rotating ring 3 is rotated. The rotation of the rotating ring 3 will tighten the prestressed cable 12 under the action of the threads of the screw rod 1 and the sliding rod 81, completing the connection of the prestressed cable 12. When the prestressed cable 12 becomes loose due to thermal expansion and contraction or other factors, the prestressed cable 12 will be pulled outward. The prestressed cable 12 will pull the sliding rod 81 to move through the buckle 94, and the tension spring 84 will be stretched. When the sliding rod 81 moves, it will also drive the sliding frame 5 to move. When the connecting frame 82 moves, it will also drive the clamping block 83 to move. When the clamping block 83 moves, the sliding frame 5 will squeeze the two clamping blocks 83. When the pulling distance of the prestressed cable 12 exceeds the safe range, the two clamping blocks 83 will clamp the prestressed cable 12, and the sliding frame 5 will press against the two clamping blocks 83, so that the prestressed cable 12 will no longer move, and then the prestressed cable 12 will be locked when the prestressed cable 12 becomes loose, and at the same time prevent the prestressed cable 12 from loosening and detaching, thereby enhancing the connection stability of the prestressed cable 12; when the sliding rod 81 moves, the connecting rod 92 will rotate around the fixed rod 91, and when the connecting rod 92 rotates, it will push the sliding block 93 to move in the opposite direction, and when the sliding block 93 moves in the opposite direction, it will push the sliding The frame 5 moves in the reverse direction. When the sliding frame 5 moves in the reverse direction, it will drive the prestressed cable 12 to move in the reverse direction under the action of the sliding rod 81 and the fastener 94, and then automatically tighten the prestressed cable 12 when it becomes loose, so as to avoid structural deformation or reduction of bearing capacity of the building due to stress relaxation, and maintain the balance of the structure; when the sliding plate moves in the reverse direction, it will drive the alarm 111 to move. When it exceeds the safety range, the button 112 on the alarm 111 will contact the fixed frame 4, triggering the alarm 111, thereby reminding the staff to make corresponding adjustments.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A connecting structure for prestressed cables of a tower, characterized in that: Comprising: A screw rod (1), a hook (2) fixedly connected to the screw rod (1), a rotating ring (3) threadedly connected to the screw rod (1), a fixing frame (4) threadedly connected to the rotating ring (3), a sliding frame (5) slidably connected to the fixing frame (4), a conical cylinder (6) threadedly connected to the sliding frame (5), a clamping component (7) provided on the conical cylinder (6), a prestressed cable (12) passing through the conical cylinder (6) and the sliding frame (5), a locking mechanism (8) provided on the sliding frame (5), a tensioning mechanism (9) provided on the fixing frame (4), and the tensioning mechanism (9) is connected to the fixing frame (4).

2. The tower prestressed cable connection structure according to claim 1, characterized in that: The clamping component (7) comprises: three clamping blocks and a reinforcing rib. The three clamping blocks are fixedly connected to the reinforcing rib, and the three clamping blocks clamp the prestressed cable (12) through the reinforcing rib. The three clamping blocks and the reinforcing rib are both located inside the conical cylinder (6).

3. The prestressed cable connection structure of a tower according to claim 1, characterized in that: The locking mechanism (8) comprises: a sliding rod (81) slidably connected to the sliding frame (5), a connecting frame (82) fixedly connected to the sliding rod (81), two clamping blocks (83) fixedly connected to the connecting frame (82), and a tension spring (84) directly connecting the sliding rod (81) and the sliding frame (5).

4. A tower prestressed cable connection structure according to claim 3, characterized in that: Both of the two clamping blocks (83) are obliquely arranged.

5. A tower prestressed cable connection structure according to claim 3, characterized in that: The tensioning mechanism (9) comprises: two fixing rods (91) fixedly connected to the fixing frame (4), two connecting rods (92) respectively rotatably connected to the two fixing rods (91), the four connecting rods (92) are all slidably connected to the sliding rod (81), four sliding blocks (93) slidably connected to the fixing frame (4), the four connecting rods (92) are respectively slidably connected to the four sliding blocks (93), two fastening members (94) fixed to the prestressed cable (12) by screws, and the two fastening members (94) are clamped with the sliding rod (81).

6. A tower prestressed cable connection structure according to claim 5, characterized in that: It further includes a limiting mechanism (10) for stabilizing the prestressed cable (12). The limiting mechanism (10) comprises: two rotating plates (101) rotatably connected to the conical cylinder (6), and fixing plates (102) respectively fixedly connected to the two rotating plates (101).

7. A tower prestressed cable connection structure according to claim 6, characterized in that: Slots are respectively formed on both of the two fixing plates (102).

8. A tower prestressed cable connection structure according to claim 6, characterized in that: It further includes an alarm mechanism (11) for alarming. The alarm mechanism (11) comprises: alarm devices (111) provided on both sides of the sliding frame (5), and buttons (112) are provided on both of the two alarm devices (111).

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