Steel strand tensioning device

Abstract

The application discloses a steel strand tensioning device suitable for being installed on a main beam of a flexible support, comprising a base used for being installed on the main beam, a holding assembly used for holding the steel strand, a pulley assembly comprising a first pulley, the first pulley being installed on the holding assembly, a pull rope, one end of the pull rope being fixed, the other end of the pull rope being also fixed after winding around the first pulley, and the holding assembly being capable of moving towards the main beam by exerting a tension force on the pull rope. The steel strand tensioning device can obtain the same tension force on the steel strand by exerting a smaller acting force, and has the advantages of simple structure, light weight, convenient installation, high installation efficiency and the like.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic support structures, and in particular to a steel strand tensioning device. Background Technology

[0002] Currently, most steel strand tensioning for flexible supports on the market uses hydraulic equipment or winch equipment. The equipment is heavy and difficult to transport. When the tension force is large, the equipment itself also needs to be fixed. This is especially inconvenient for projects such as fishing and solar power projects or projects with complex terrain.

[0003] Therefore, it is necessary to provide a new steel strand tensioning device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a steel strand tensioning device for a flexible support, which has a simple structure, is easy to use, and has high installation efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A steel strand tensioning device, suitable for installation on the main beam of a flexible support, the steel strand tensioning device comprising:

[0007] Base, for mounting to the main beam;

[0008] Holding components are used to hold steel strands in place;

[0009] A pulley assembly, including a first pulley, the first pulley being mounted on the retaining assembly;

[0010] A pull rope is fixed at one end and the other end of the pull rope is also fixed after being wound around the first pulley. By applying tension to the pull rope, the holding assembly can be moved toward the main beam.

[0011] As a further improvement of the present invention, at least two first pulleys are arranged in the transverse direction, and two of the at least two first pulleys are respectively arranged at both ends of the transverse direction of the holding assembly.

[0012] As a further improved technical solution of the present invention, the pulley assembly further includes a first fixing seat, two first fixing seats are respectively disposed at the lateral ends of the holding assembly, the first pulley is pivotally disposed on the first fixing seat, and a space is formed between the two first fixing seats for the steel cable to pass through the holding assembly.

[0013] As a further improvement of the present invention, the pulley assembly further includes a second pulley, which is pivotally disposed on the base, and the other end of the pull rope is fixed after being wound around the first pulley and the second pulley in sequence.

[0014] As a further improvement of the present invention, a third pulley is provided on the base. The pivot axis of the third pulley is perpendicular to the pivot axis of the second pulley. The other end of the pull rope is wound around the first pulley and the second pulley on one side of the space in sequence, and then turns to the other side of the space through the third pulley, and is wound around the first pulley and the second pulley on the other side of the space again.

[0015] As a further improvement of the present invention, the base includes an upper platform, a side operating part, a lower connecting part and a side connecting part connected in sequence, and the second pulley is pivotally disposed on the side operating part.

[0016] As a further improvement of the present invention, the side operation part is provided with a sliding component, the sliding component includes a guide part, a sliding part and an adjusting member, the sliding part cooperates with the guide part, the second pulley is pivotally disposed on the adjusting member, the adjusting member is connected to the sliding part, and the adjusting member can drive the sliding part and the second pulley to move synchronously in the height direction.

[0017] As a further improved technical solution of the present invention, the steel strand tensioning device further includes a winding device disposed on the base. The winding device includes a mounting base and a roller. The roller is pivotally disposed on the mounting base. The two ends of the tension rope are fixed on the roller. When the roller rotates, it can wind the tension rope to apply tension to the tension rope.

[0018] As a further improvement of the present invention, the roller includes a cylindrical portion and a toothed portion formed on the outer periphery of the cylindrical portion, and the winding device further includes a transmission rod, the transmission rod includes a rod portion and a gear, the number of teeth of the toothed portion is greater than the number of teeth of the gear, and the toothed portion meshes with the gear.

[0019] As a further improvement of the present invention, the steel strand tensioning device further includes a reduction device disposed on the mounting base. The reduction device includes a housing, a worm gear and a worm. The worm gear and the worm are disposed inside the housing. The worm extends out of the housing to form a power input end. The worm gear is connected to the transmission rod.

[0020] As a further improvement of the present invention, the steel strand tensioning device further includes a driving tool, which is used to connect to the power input end and can drive the steel strand tensioning device to perform tensioning action.

[0021] As a further improvement of the present invention, the bottom of the upper platform is provided with casters, which can drive the steel strand tensioning equipment to move along the main beam.

[0022] As a further improvement of the present invention, the holding assembly includes two clamping plates and a locking assembly. Each clamping plate is provided with a channel and a fastening hole. The channel of one clamping plate corresponds to the fastening hole of the other clamping plate. The two clamping plates are locked by the locking assembly passing through the channel of one clamping plate and the fastening hole of the other clamping plate. A holding space for the steel strand is formed between the locking assembly and the channel.

[0023] Compared with the prior art, the advantages of the steel strand tensioning device of the present invention are as follows:

[0024] The steel strand tensioning device of this application includes a base, a holding component, a pulley assembly, and a tension rope. The base is fixed to the main beam, the holding component is used to abut the steel strand, and the pulley assembly is provided on the holding component. The pulley assembly is connected to the base by the tension rope. By applying tension force to the tension rope, the steel strand can be tensioned and moved to the main beam to assist workers in installing the steel strand onto the main beam. The entire steel strand tensioning device has a simple structure, is lightweight, easy to install and operate, and has high installation efficiency.

[0025] By installing a pulley assembly on the holding assembly, the pulleys on the holding assembly become movable pulleys. This allows for the application of a smaller force to the guy rope to achieve the same tension as the steel strand, offering the advantage of labor saving. Reducing the force applied to the guy rope allows for the use of smaller force-applying devices, making operation more convenient and reducing costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a steel strand tensioning device according to a specific embodiment of the present invention;

[0027] Figure 2 This is a partial structural schematic diagram of the base and pulley assembly according to a specific embodiment of the present invention;

[0028] Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle;

[0029] Figure 4 for Figure 2 Front view diagram;

[0030] Figure 5 for Figure 4 A magnified structural diagram of region B in the middle;

[0031] Figure 6 for Figure 2 A left-view diagram;

[0032] Figure 7 This is a partial structural diagram of the base according to a specific embodiment of the present invention;

[0033] Figure 8 This is an exploded view of a portion of the sliding component according to a specific embodiment of the present invention;

[0034] Figure 9 This is a partial exploded structural diagram of the base according to a specific embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the installation of the third pulley according to a specific embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the installation of the fourth pulley according to a specific embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram of the installation of a caster according to a specific embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of the structure of a winding device according to a specific embodiment of the present invention;

[0039] Figure 14 for Figure 13 A magnified structural diagram of region C in the middle;

[0040] Figure 15 This is an exploded structural diagram of a winding device according to a specific embodiment of the present invention;

[0041] Figure 16 This is a schematic diagram of the installation of a speed reduction device according to a specific embodiment of the present invention;

[0042] Figure 17 This is a schematic diagram of the installation of the holding component and the rope according to a specific embodiment of the present invention;

[0043] Figure 18 This is a schematic diagram of the structure of a retaining component according to a specific embodiment of the present invention;

[0044] Figure 19 This is a schematic diagram of the structure of a retaining component according to a specific embodiment of the present invention;

[0045] Figure 20 This is an exploded view of the holding component according to a specific embodiment of the present invention;

[0046] Figure 21 This is an exploded view of the holding component according to a specific embodiment of the present invention;

[0047] Figure 22 This is an exploded view of the holding component according to a specific embodiment of the present invention;

[0048] Figure 23 This is a schematic diagram of the installation of the retaining component and the first fixing base according to a specific embodiment of the present invention;

[0049] Figure 24 This is a schematic diagram of the retaining component and steel strand according to a specific embodiment of the present invention;

[0050] Figure 25 This is a cross-sectional structural diagram of the retaining component and steel strand according to a specific embodiment of the present invention;

[0051] Figure 26 This is a schematic diagram of the installation of the head of the steel strand and the main beam according to a specific embodiment of the present invention. Detailed Implementation

[0052] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0053] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” as used in the specification and claims of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0054] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this invention are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" encompasses the element following "comprising" or "including" and its equivalents, but this does not preclude the element preceding "comprising" or "including" from also including other elements. In this invention, the term "several" means two or more.

[0055] Please see Figures 1 to 26As shown, this embodiment of the invention discloses a steel strand tensioning device, suitable for installation on the main beam 200 of a flexible support, to tension the steel strand 100, facilitating worker assistance in installing the steel strand. The steel strand 100 includes a rope 101 and a head 102, which are integrally formed, and the diameter of the head 102 is larger than the diameter of the rope 101. The steel strand tensioning device includes a holding assembly 10, a pulley rope 20, a pulley assembly, a base 40, a winding device, a speed reduction device 60, and a driving tool 70. The holding assembly 10 is used to abut the steel strand 100. The base 40 is installed on the main beam 200. The pulley rope 20 is wound around the pulley assembly, and both ends of the pull rope 20 are fixed to the winding device. The driving tool 70 sequentially drives the speed reduction device 60 and the winding device to apply tension to the pull rope 20, thereby moving the holding assembly 10 and the steel strand 100 toward the main beam 200, achieving a larger tension force on the steel strand 100 and reducing the input torque. In other embodiments, both ends of the pull rope 20 can also be fixed to the ground or other positions, as long as most of the pull rope 20 is wound around the winding device.

[0056] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the base 40 is installed on the outer periphery of the main beam 200. The base 40 is generally rectangular and includes an upper platform 41, a side operating part 42, a lower connecting part 43, and a side connecting part 44 connected end to end. The upper platform 41 and the lower connecting part 43 are opposite each other, and the side operating part 42 and the side connecting part 44 are opposite each other. In this embodiment, the upper platform 41 includes multiple hollow square tubes arranged in parallel, which have strong supporting force and save material costs; the side operating part 42 includes multiple plates arranged in parallel, with both ends fixedly connected to the upper platform 41 and the lower connecting part 43 respectively; the lower connecting part 43 includes multiple plates arranged in parallel, with both ends fixedly connected to the side operating part 42 and the side connecting part 44 respectively; the side connecting part 44 has multiple hollow square tubes arranged in parallel, with both ends fixedly connected to the lower connecting part 43 and the upper platform 41 respectively. From the front view of the base 40, the base 40 forms a left-right symmetrical structure, wherein the side operating part 42, the lower connecting part 43, and the side connecting part 44 are each divided into two parts and connected to the upper platform 41. In other embodiments, the upper platform 41 may also be composed of a single piece of sheet metal or other commonly used materials.

[0057] Please see Figures 1 to 11 , Figure 23As shown, the side operation section 42 is provided with a sliding assembly 45, which includes a guide section 451, a sliding section 452, and an adjusting member 453. The single-sided side operation section 42 includes two plates, with the guide section 451 formed by hollowing out the middle of the plates. The sliding section 452 has a sliding groove 4521. The width of the guide section 451, which is the thickness of a single plate of the side operation section 42, is approximately equal to the width of the sliding groove 4521. This allows the sliding section 452 to translate along the guide section 451, i.e., to move along the height direction, without moving in other directions. In this embodiment, the sliding section 452 is roller-shaped; in other embodiments, the sliding section 452 can also be formed into other shapes that are easier to move. Adjusting member 453 is connected to sliding part 452. Adjusting member 453 can drive sliding part 452 to move and be fixed on guide part 451. The pulley assembly includes first pulley 31, second pulley 33 and third pulley 34. The first pulley 31 is installed on the holding assembly 10, the second pulley 33 and the third pulley 34 are installed on the base 40, and the pull rope 20 is wound around the first pulley 31, the second pulley 33 and the third pulley 34 and is continuously connected.

[0058] Please see Figure 1 and Figure 23 As shown, the first pulley 31 is installed on the holding assembly 10 and is used to wind the pull rope 20 to apply tension to the holding assembly 10. Specifically, one end of the pull rope 20 is fixed, and the other end is wound around the first pulley 31. By applying tension to the pull rope, the holding assembly 10 can be moved toward the main beam 200. Further, at least two first pulleys 31 are arranged in the transverse direction. In this embodiment, two first pulleys 31 are respectively installed at both ends of the transverse direction of the holding assembly 10 so that the holding assembly remains stable when under tension. Further, the pulley assembly is also provided with two first fixing seats 32 to install the first pulleys 31. The two first fixing seats 32 are respectively arranged at both ends of the holding assembly 10 in the transverse direction and located on the side of the holding assembly 10 closer to the main beam 200. A space 300 is formed between the two first fixing seats 32 for the steel strand 100 to pass through the holding assembly 10. The first pulley 31 is pivotally mounted on the first fixing seat 32.

[0059] In this embodiment, the transverse direction refers to the extension direction of the main beam 200.

[0060] Please see Figures 4 to 8As shown, the second pulley 33 is mounted on the base 40. Further, the second pulley 33 is pivotally mounted on the side operating part 42. Even further, the second pulley 33 is pivotally mounted on the adjusting member 453. One end of the pull rope 20 is fixed to the winding device, and the other end is sequentially wound around the first pulley 31 and the second pulley 33 before being fixed to the winding device. The adjusting member 453 includes a straight rod 4531 and a mating part 4532. The mating part 4532 is located at one end of the straight rod 4531, and a shaft 454 passes through the mating part 4532. The mating part 4532 is concave, and the sliding part 452 is located on the left and right sides of the concave shape of the mating part 4532. The second pulley 33 pivots in the middle of the concave shape of the mating part 4532. The left and right sides of the concave shape of the mating part 4532 have two opposing first through holes 4533. A shaft 454 passes through the first through holes 4533, the sliding part 452, and the second pulley 33 to connect the adjusting member 453 to the sliding part 452 and the second pulley 33. Specifically, the shaft 454 passes through the sliding part 452, the first through hole 4533, the second pulley 33, the first through hole 4533, and the sliding part 452 sequentially from one side to the other side. Thus, operating the adjusting member 453 can drive the sliding part 452 and the second pulley 33 to move synchronously, thereby realizing the height adjustment of the holding assembly 10. Furthermore, a fixing plate 455 is provided at the end of the side operation part 42 away from the upper platform 41. The fixing plate 455 is fixedly connected to two plates of the side operation part 42 on the same side of the base 40. The fixing plate 455 has a second through hole 4551, which is adapted to the straight rod 4531. The straight rod 4531 passes through the second through hole 4551, so that the adjusting member 453 can move more stably. When the position of the sliding part 452 and the second pulley 33 is adjusted, the fixing member 82 is screwed into the end of the straight rod 4531 away from the mating part 4532 until it is close to the fixing plate 455 to fix it.

[0061] Please see Figure 4 , Figure 9 and Figure 10As shown, the third pulley 34 is installed on the base 40 and is used to change the direction of the pull rope 20 from one side of the space 300 to the other side of the space 300. Further, the third pulley 34 is pivotally mounted on the base 40, and the pivot axis of the third pulley 34 is perpendicular to the pivot axis of the second pulley 33. The third pulley 34 is located above the second pulley 33. One end of the pull rope 20 is fixed, and the other end is wound around the first pulley 31 and the second pulley 33 on one side of the space 300 in sequence. After passing through the third pulley 34, it changes direction to the other side of the space 300, and then wound around the first pulley 31 and the second pulley 33 on the other side of the space 300 in sequence. In this embodiment, there are two third pulleys 34, which are symmetrically arranged on both sides of the space 300. In this embodiment, the pulley assembly is further provided with a second fixing seat 35 for mounting the third pulley 34. The second fixing seat 35 has a groove 351, a first through hole 352 and a second through hole 353. The second through hole 353 is perpendicular to the first through hole 352. The third pulley 34 is at least partially located in the groove 351. The third pulley 34 is mounted on the second fixing seat 35 through the first through hole 352. The second fixing seat 35 is then fixedly mounted on the base 40 through the second through hole 353 and the mounting hole (not shown in the figure) on the base 40.

[0062] Please see Figure 2 , Figure 4 , Figure 7 , Figure 9 and Figure 11 As shown, in this embodiment, the pulley assembly also includes a fourth pulley 36, which is mounted on the base 40 and used to guide the ends of the pull ropes 20 on both sides to the winding device. Further, the fourth pulley 36 is pivotally mounted on the base 40, and the ends of the pull ropes 20 on both sides are fixed to the winding device after being wound around the fourth pulley 36. In this embodiment, the pulley assembly also includes a third fixing seat 37 for mounting the fourth pulley 36. The third fixing seat 37 includes multiple mounting pieces 371, two kits 372, and a long rod 373. First, the fourth pulley 36 is pivotally mounted on the kits 372. Then, the long rod 373 is used to coaxially mount the mounting pieces 371 and the kits 372, so that the fourth pulley 36, mounting pieces 371, kits 372, and long rod 373 form a whole. Finally, the mounting pieces 371 are fixed to the mounting holes (not shown in the figure) of the upper platform 41 to complete the installation of the fourth pulley 36.

[0063] In this embodiment, a first pulley 31, a second pulley 33, a third pulley 34, and a fourth pulley 36 are respectively provided on both sides of the steel strand 100, i.e., at both ends of the holding assembly 10. The third pulley 34 and the fourth pulley 36 are only used to change the winding direction and force direction of the pull rope 20. The first pulley 31 acts as a movable pulley; by providing one first pulley 31, the force can be reduced to half, allowing a larger tension force on the steel strand to be obtained with a smaller output force on the pull rope, thus saving effort. It also reduces the force applied to the pull rope, allowing for the use of smaller force-applying devices, making operation more convenient and reducing costs. The second pulley 33, while changing the winding direction and force direction of the pull rope 20, also acts as a fixed pulley in the entire steel strand tensioning device.

[0064] Please see Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 9 and Figure 12 As shown, the base 40 is equipped with casters 46, which are used to move the entire steel strand tensioning equipment along the main beam 200 to assist in the installation of multiple transverse steel strands. The casters 46 are located at the bottom of the upper platform 41 and include a caster body 461 and a caster axle 462. The length of the caster axle 462 is greater than the length of the caster body 461. In this embodiment, a fourth fixing seat 47 is provided to install the casters 46. The fourth fixing seat 47 has a third through hole 471 through which the caster axle 462 passes, and both ends of the caster axle 462 pass through the third through hole 471. The fourth fixing seat 47 is then fixed to the upper platform 41, thereby installing the casters 46 on the upper platform 41.

[0065] Please see Figure 1 , Figures 13 to 15As shown, the winding device includes a roller 52 and a transmission rod 53. In this embodiment, a mounting base 51 is provided to mount the roller 52 and the transmission rod 53. The roller 52 and the transmission rod 53 are pivotally mounted on the mounting base 51. The two ends of the pull rope 20 are fixed to the roller 52. When the roller 52 rotates, it can wind the pull rope 20 to apply tension to the pull rope 20. The roller 52 includes a cylindrical portion 521 and a toothed portion 522 formed on the outer periphery of the cylindrical portion 521. The transmission rod 53 includes a rod portion 531 and a gear 532. The toothed portion 522 meshes with the gear 532, so that the transmission rod 53 can drive the roller 52 to rotate. Furthermore, the number of teeth of the toothed portion 522 is greater than the number of teeth of the gear 532, thereby changing the transmission ratio and achieving a speed reduction effect. Thus, a smaller torque can be input from the transmission rod 53 to achieve a larger torque output from the roller 52. The mounting base 51 has a fourth through hole 511 and a fifth through hole 512, and the roller 52 has a sixth through hole 523. The fourth through hole 511 and the sixth through hole 523 are coaxial. The rod portion 531 passes through the fifth through hole 512, thereby assembling the winding device into a whole. The mounting base 51 is fixed on the base 40, specifically, the mounting base 51 is fixed on the upper platform 41. The pull rope 20 winds from the fourth pulley 36 to the drum portion 521. The end of the pull rope 20 is fixed to the roller 52, so that the rotation of the roller 52 drives the winding and unwinding of the pull rope 20. The outer diameter of the drum portion 521 is large enough to wind and store the pull rope 20.

[0066] Please see Figure 1 , Figure 13 and Figure 16 As shown, the reduction device 60 is mounted on the mounting base 51. The reduction device 60 includes a housing 61, a worm gear, and a worm. The worm gear and worm are disposed inside the housing 61. The worm extends out of the housing 61 to form a power input end 62, and the worm gear forms a power output end 63 inside the housing 61. The worm gear is connected to the transmission rod 53. The driving tool 70 is connected to the power input end 62, and the transmission rod 53 is connected to the power output end 63. Specifically, the rod portion 531 of the transmission rod 53 passes through the fifth through hole 512 and extends to the outside of the mounting base 51, then extends into the housing 61 to connect to the power output end 63. In this embodiment, the reduction device 60 adopts a worm gear reducer and can be started and stopped at any position using its self-locking performance. The driving tool 70 can be operated electrically or manually. The driving tool 70 provides power to the reduction device 60 and transmits it sequentially to the transmission rod 53, the roller 52, the pull rope 20, and the holding assembly 10 to achieve tensioning and fixing of the steel strand 100.

[0067] Please see Figures 17 to 23As shown, the holding assembly 10 is used to hold and abut against the fixed steel strand 100. The holding assembly 10 includes two interlocking clamps 11, a locking assembly 12 for locking the clamps 11, and a sleeve 13 fixed to the clamps 11. The clamp 11 has a central hole 113, a channel 114 communicating with the central hole 113, and a fastening hole 115. The central hole 113 is used for the sleeve 13 to pass through, and the channel 114 and the fastening hole 115 are used for the installation of the locking assembly 12. The sleeve 13 includes a tube 131, a blocking part 132, and a first channel 133 extending from the tube 131 to the blocking part 132. The first channel 133 is used to fix and accommodate the steel strand 100, and both ends of the steel strand 100 extend out of the first channel 133. The outer diameter of the tube 131 is equivalent to the size of the central hole 113. The blocking part 132 abuts against the head 102 of the steel strand 100 on the side away from the clamp. Thus, when a tension force is applied to the steel strand 100 to move toward the main beam 200, the blocking part 132 abuts against the head 102 of the steel strand 100 and drives the entire steel strand 100 to move toward the main beam 200.

[0068] The outer diameter of the blocking part 132 is larger than the size of the central hole 113, so that when the steel strand 100 is subjected to tension and generates a reaction force, the blocking part 132 abuts against the clamp 11 and the sleeve 13 is not pulled out by the steel strand 100.

[0069] Furthermore, the sleeve 13 is divided into two parts so that the first channel 133 is not radially closed. During assembly, the two parts of the sleeve 13 are fitted onto the outer periphery of the steel strand 100, and then the sleeve 13 is fixed and locked using the clamping plate 11 and the locking assembly 12. A holding space for the steel strand 100 is formed between the locking assembly 12 and the channel 114. In this embodiment, the central hole 113 is the holding space. In this embodiment, two clamping plates 11 and two locking assemblies 12 are used. The two clamping plates 11 are arranged opposite each other, and the channel 114 of one clamping plate 11 corresponds to the fastening hole 115 of the other clamping plate 11 to facilitate the adjustment and fixing of the locking assembly 12. The locking assembly 12 includes a main lock body 121 and a nut 122. The main lock body 121 includes a lock head 1211 and a lock pin 1212. The size of the lock head 1211 is larger than the size of the channel 114 and the fastening hole 115, so that the lock head 1211 abuts against one side of the clamping plate 11. The lock pin 1212 is partially located in the channel 114 and the fastening hole 115, and partially located on the other side of the clamping plate 11. The nut 122 is inserted from the other side of the clamping plate 11 through the tail of the lock pin 1212 and tightened to lock the clamping plate 11 and the sleeve 13. Further, the lock head 1211 has a third through hole 1213 for mounting the first fixing seat 32 and the first pulley 31. Furthermore, the locking assembly 12 also includes a plug 123. The lock pin 1212 has a fourth through hole 1214. The plug 123 is adapted to the fourth through hole 1214 to enhance the locking effect of the locking assembly 12. In some embodiments, the locking assembly 12 is further provided with a washer 124 between the clamping plate 11 and the nut 122 to enhance the locking effect.

[0070] Please see Figure 1 , Figures 24 to 26 As shown, in this embodiment, the head 102 of the steel strand 100 abuts against the sleeve 13 in the axial direction. Further, the head 102 abuts against the blocking part 132 in the axial direction. The head 102 has a first fixing hole 1022 and a fixing groove 1021 at the other end relative to the rope 101. The main beam 200 has a second fixing hole 201 and a mounting plate 202. The second fixing hole 201 is provided in the mounting plate 202. The mounting plate 202 is inserted into the fixing groove 1021. The head 102 is installed on the main beam 200 through the first fixing hole 1022 and the second fixing hole 201, thus completing the installation of the steel strand 100.

[0071] Furthermore, in this embodiment, in the length direction of the main beam 200, pulley assemblies are symmetrically provided on the holding components 10 on both sides of the steel strand 100 to ensure that the holding components 10 remain stable during movement. On one side of the steel strand 100, the pull rope 20 is sequentially wound around the fourth pulley 36, the first pulley 31, the second pulley 33, and the third pulley 34, and then sequentially wound around the third pulley 34, the second pulley 33, the first pulley 31, and the fourth pulley 36 on the other side. Finally, it is wound from the fourth pulleys 36 on both sides to the drum 52 for winding and storage. The end of the pull rope 20 is fixed to the drum 52 so that the drum 52 can drive the pull rope 20 to be wound and released synchronously. The part of the pulley assembly on the holding component 10 forms a movable pulley, which has a labor-saving effect. When the tensioning operation is completed, a smaller force can be applied to the pull rope 20, which also reduces the rotation speed of the winding device and achieves the first stage of deceleration. The winding device and the transmission rod 53 are meshed by gears. The number of teeth on the toothed part 522 of the winding device is greater than the number of teeth on the gear 532, which can change the transmission ratio and achieve a speed reduction effect. This allows a smaller torque input from the transmission rod 53 to achieve a larger torque output from the drum 52, thus realizing the second stage of speed reduction. By setting a speed reduction device 60 on the transmission rod 52, which is a worm gear combination, its self-locking performance allows for start and stop at any position, thus achieving the third stage of speed reduction. The input end of the worm gear serves as the power input end for the entire steel strand tensioning device. Therefore, the entire steel strand tensioning device, through three stages of speed reduction, achieves a larger tension force with a smaller input power. The entire drive unit has a smaller size and specifications, reducing costs, and is easy to install and highly efficient.

[0072] In summary, compared with the prior art, the advantages of the steel strand tensioning device of the present invention are as follows: The steel strand tensioning device of the present application includes a base 40, a holding component 10, a pulley assembly, and a tension rope 20. The base 40 is fixed to the main beam 200. The holding component 10 is used to abut the steel strand 100. A pulley assembly is provided on the holding component 10. The pulley assembly is connected to the base 40 through the tension rope 20. By applying tension force to the tension rope 20, the steel strand 100 can be tensioned and moved to the main beam 200 to assist workers in installing the steel strand 100 onto the main beam 200. The entire steel strand tensioning device has a simple structure, is lightweight, easy to install and operate, and has high installation efficiency. By setting the pulley assembly and installing the pulley assembly on the holding component 10, the pulley installed on the holding component 10 forms a movable pulley, so that a smaller force is applied to the tension rope 20 to obtain the same tension force on the steel strand 100, which has the advantage of saving labor. Reducing the force applied to the pull rope 20 allows for the use of smaller force-applying devices, making operation more convenient and reducing costs.

[0073] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A steel strand tensioning device, suitable for installation on the main beam (200) of a flexible support, characterized in that, The steel strand tensioning equipment includes: Base (40) for mounting to the main beam (200); A retaining assembly (10) is used to retain the steel strand (100); The pulley assembly includes a first pulley (31) and a second pulley (33). The first pulley (31) is mounted on the retaining assembly (10). At least two first pulleys (31) are arranged laterally. Two of the at least two first pulleys (31) are respectively arranged at both ends of the laterally of the retaining assembly (10). The second pulley (33) is pivotally disposed on the base (40). The pull rope (20) is fixed at one end, and the other end of the pull rope (20) is fixed after being wound around the first pulley (31) and the second pulley (33) in sequence. By applying tension to the pull rope (20), the holding component (10) and the steel strand (100) can be driven to move toward the main beam (200). A winding device is provided on the base (40). The winding device includes a mounting base (51) and a roller (52). The roller (52) is pivotally mounted on the mounting base (51). The two ends of the pull rope (20) are fixed on the roller (52). When the roller (52) rotates, it can wind the pull rope (20) to apply tension to the pull rope (20).

2. The steel strand tensioning device according to claim 1, characterized in that: The pulley assembly also includes a first fixing seat (32), two first fixing seats (32) are respectively disposed at the lateral ends of the holding assembly (10), the first pulley (31) is pivotally disposed on the first fixing seat (32), and a space (300) is formed between the two first fixing seats (32) for the steel strand (100) to pass through the holding assembly (10).

3. The steel strand tensioning device according to claim 2, characterized in that: A third pulley (34) is provided on the base (40). The pivot axis of the third pulley (34) is perpendicular to the pivot axis of the second pulley (33). The other end of the pull rope (20) is wound around the first pulley (31) and the second pulley (33) on one side of the space in sequence, and then turns to the other side of the space (300) through the third pulley (34), and wound around the first pulley (31) and the second pulley (33) on the other side of the space (300) again.

4. The steel strand tensioning device according to claim 2, characterized in that: The base (40) includes an upper platform (41), a side operation section (42), a lower connecting section (43) and a side connecting section (44) connected in sequence, and the second pulley (33) is pivotally disposed on the side operation section (42).

5. The steel strand tensioning device according to claim 4, characterized in that: The side operation part (42) is provided with a sliding assembly (45), which includes a guide part (451), a sliding part (452) and an adjusting member (453). The sliding part (452) cooperates with the guide part (451), and the second pulley (33) is pivotally disposed on the adjusting member (453). The adjusting member (453) is connected to the sliding part (452), and the adjusting member (453) can drive the sliding part (452) and the second pulley (33) to move synchronously in the height direction.

6. The steel strand tensioning device according to claim 4, characterized in that: The roller (52) includes a cylindrical portion (521) and a toothed portion (522) formed on the outer periphery of the cylindrical portion (521). The winding device also includes a transmission rod (53), which includes a rod portion (531) and a gear (532). The number of teeth of the toothed portion (522) is greater than the number of teeth of the gear (532), and the toothed portion (522) meshes with the gear (532).

7. The steel strand tensioning device according to claim 6, characterized in that: The steel strand tensioning device also includes a speed reduction device (60) mounted on the mounting base (51). The speed reduction device (60) includes a housing (61), a worm gear and a worm. The worm gear and the worm are disposed inside the housing (61). The worm extends out of the housing (61) to form a power input end (62). The worm gear is connected to the transmission rod (53).

8. The steel strand tensioning device according to claim 7, characterized in that: The steel strand tensioning device also includes a drive tool (70), which is used to connect to the power input end (62) and can drive the steel strand tensioning device to perform tensioning actions.

9. The steel strand tensioning device according to claim 4, characterized in that: The bottom of the upper platform (41) is provided with casters (46), which can drive the steel strand tensioning equipment to move along the main beam (200).

10. The steel strand tensioning device according to claim 1, characterized in that: The holding assembly (10) includes two clamping plates (11) and a locking assembly (12). Each clamping plate (11) is provided with a channel (114) and a fastening hole (115). The channel (114) of one clamping plate (11) corresponds to the fastening hole (115) of the other clamping plate (11). The two clamping plates (11) are locked by the locking assembly (12) passing through the channel (114) of one clamping plate (11) and the fastening hole (115) of the other clamping plate (11). The locking assembly (12) and the channel (114) form a holding space for the steel strand (100).

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