Intelligent tensioning device for prestressed steel strand

Abstract

The application relates to the technical field of steel strands, in particular to a prestressed steel strand intelligent tensioning device which comprises a base and a tensioning driving mechanism arranged on the base, and further comprises a first cylinder, a second cylinder, the first cylinder being fixed on the base, the second cylinder being movably arranged on the base and being connected with the tensioning driving mechanism, the tensioning driving mechanism being capable of driving the second cylinder to move along the length direction of the base, two arc-shaped plate members being rotatably arranged on the base, one set of transmission mechanism being connected with the rotating shaft of each of the two arc-shaped plate members, the transmission mechanism being connected with an elastic trigger mechanism arranged on the base, the elastic trigger mechanism being capable of cooperating with the tensioning driving mechanism, a screw driving mechanism being capable of adjusting the position of an anchorage device, and a dismounting structure being capable of realizing quick assembly of a positioning disc; through mutual cooperation between various mechanisms and components, the prestressed steel strand intelligent tensioning device realizes efficient and safe tensioning of the steel strand, and is suitable for popularization and use.

Description

Technical Field

[0001] This invention relates to the field of steel strand technology, specifically to an intelligent tensioning device for prestressed steel strands. Background Technology

[0002] Steel strand is a steel product made of multiple strands of steel wire twisted together. The surface of carbon steel can be coated with galvanized layers, zinc-aluminum alloy layers, aluminum cladding, copper plating, epoxy resin coating, etc., as needed. Prestressing tensioning involves applying tension to a structural member before it bears tensile stress, causing deformation to cope with the loads on the steel structure. The effect of prestressing tensioning is to apply pre-compressive stress to the steel strands in the tension module before the structural member bears external loads, improving the member's bending resistance and stiffness, delaying crack initiation, and increasing the member's durability.

[0003] In actual operation, existing steel strand tensioning devices typically use bolts to fix the various components together. As a result, workers need to use tools to perform a series of operations during assembly, leading to low work efficiency. Moreover, the safety performance of most devices needs to be improved, as dangerous accidents can easily occur when the steel strand breaks. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent tensioning device for prestressed steel strands to solve the problems mentioned in the background art.

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

[0006] A prestressed steel strand intelligent tensioning device includes a base and a tensioning drive mechanism disposed on the base, and further includes:

[0007] A first cylinder and a second cylinder, wherein the first cylinder is fixed on the base and the second cylinder is movably disposed on the base and connected to the tensioning drive mechanism, the tensioning drive mechanism can drive the second cylinder to move along the length direction of the base to perform a tensioning action on the steel strand located between the first cylinder and the second cylinder;

[0008] Two arc-shaped plates are rotatably mounted on the base. Each of the two arc-shaped plates has a rotation shaft connected to a transmission mechanism. The transmission mechanism is connected to an elastic triggering mechanism mounted on the base. The elastic triggering mechanism can cooperate with the tensioning drive mechanism.

[0009] An anchor is movably provided in both the first cylinder and the second cylinder, and the anchor is connected to a threaded drive mechanism installed in the first cylinder. The threaded drive mechanism can drive the anchor to move axially along the first cylinder. The threaded drive mechanism also cooperates with a limiting mechanism provided on the first cylinder.

[0010] A positioning plate is provided at one end of the first cylinder and one end of the second cylinder, and the positioning plate is provided with multiple positioning holes for steel strands to pass through. The positioning plate is detachably connected to the first cylinder through two sets of disassembly and assembly structures.

[0011] As a further embodiment of the present invention: the base is provided with a through groove, the tensioning drive mechanism includes a cross platform that is slidably fitted in the through groove and a hydraulic cylinder installed at the bottom of the base and whose movable end is fixedly connected to the cross platform, the second cylinder is fixed on the cross platform, and the elastic triggering mechanism is provided in the through groove and cooperates with the cross platform.

[0012] As a further embodiment of the present invention: the elastic triggering mechanism includes two horizontal rods slidably disposed in the through groove and a triggering plate fixedly connected to one end of the two horizontal rods facing the horizontal platform. The triggering plate abuts against the horizontal platform, and a set of the transmission mechanism is respectively connected to one end of the two horizontal rods away from the triggering plate.

[0013] Each of the two crossbars is fitted with a fourth columnar spring, one end of which is connected to the trigger plate and the other end is connected to the inner wall of the through groove.

[0014] As a further embodiment of the present invention: the transmission mechanism includes a horizontal shaft rotatably mounted on the bottom of the base and a transmission tube slidably sleeved on the horizontal shaft. The inner wall of the transmission tube is provided with a protruding post, and the outer wall of the horizontal shaft is provided with a sliding groove adapted to the transmission tube. The protruding post extends into the sliding groove and is slidably connected to the horizontal shaft. The sliding groove includes an inclined section and a straight section connected together.

[0015] The transmission tube is fixedly connected to the crossbar via a cross arm, the rotation shaft of the arc-shaped plate is connected to the transmission shaft rotatably mounted on the base via a first bevel gear set, and a second bevel gear set is connected between the transmission shaft and the cross shaft.

[0016] As a further embodiment of the present invention: the threaded drive mechanism includes an axial moving component installed inside the first cylinder and connected to the anchor, and a drive member disposed on the outer wall of the first cylinder and cooperating with the axial moving component, the drive member also cooperating with the limiting mechanism.

[0017] As a further embodiment of the present invention: the axial movement assembly includes a lead screw rotatably mounted in the first cylinder and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw. The threaded sleeve is fixedly connected to the anchor, and two guide wheels are installed on the outer wall of the threaded sleeve. The guide wheels cooperate with a guide rail fixed on the inner wall of the first cylinder. The end of the lead screw away from the anchor is also provided with a cylindrical cavity, and the cylindrical cavity is provided with two strip-shaped grooves adapted to the driving component.

[0018] As a further embodiment of the present invention: the driving component includes a connecting plate movably disposed at the end of the first cylindrical body and a driving shaft rotatably mounted on the connecting plate. The driving shaft is adapted to the cylindrical cavity, and two strip-shaped protrusions adapted to the strip-shaped groove are formed on the outer wall of the driving shaft.

[0019] Two guide rods are fixed to the end of the first cylinder. The connecting plate is slidably connected to the two guide rods, and a first cylindrical spring is sleeved on the outer periphery of each of the two guide rods. One end of the first cylindrical spring is connected to the first cylinder, and the other end is connected to the connecting plate.

[0020] As a further embodiment of the present invention: the limiting mechanism includes a limiting plate that is slidably disposed on the first cylinder and a fixing rod that is fixed on the outer wall of the first cylinder and slidably connected to the limiting plate. A second columnar spring is sleeved on the outer periphery of the fixing rod. One end of the second columnar spring is connected to the limiting plate, and the other end is connected to a first boss fixed on the fixing rod at the end away from the first cylinder.

[0021] The limiting plate has a driven block fixed to its side, the connecting plate is connected to a drive wheel via a connecting arm, the drive wheel abuts against the driven block, and the driven block has an inclined surface.

[0022] As a further embodiment of the present invention: the disassembly and assembly structure includes a guide rail fixed on the first cylinder, the guide rail being adapted to a connecting block fixed on the positioning plate, and a locking tube being provided on the guide rail, the locking tube cooperating with an elastic locking member provided on the connecting block;

[0023] The elastic locking member includes a locking rod that is slidably disposed on the connecting block and adapted to the locking tube, and a third columnar spring sleeved on the outer periphery of the locking rod. One end of the third columnar spring is connected to the connecting block, and the other end is connected to a second boss fixed to the end of the locking rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention has a novel design. When tensioning begins, the tensioning drive mechanism can cooperate with the elastic triggering mechanism, thereby causing the transmission mechanism to drive the arc-shaped plate to rotate. The two arc-shaped plates are in a contracted state during the tensioning of the steel strand, which can effectively play a protective role. The threaded drive mechanism can adjust the position of the anchor, and the disassembly and assembly structure can realize the quick assembly of the positioning plate. Therefore, through the mutual cooperation between various mechanisms and components, the efficient and safe tensioning function of the steel strand is realized, which is suitable for widespread use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of one embodiment of an intelligent tensioning device for prestressed steel strands.

[0026] Figure 2 This is a structural schematic diagram from another angle of one embodiment of the intelligent tensioning device for prestressed steel strands.

[0027] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0028] Figure 4 This is a schematic diagram illustrating the cooperation relationship between the transmission mechanism and the elastic triggering mechanism in one embodiment of the intelligent tensioning device for prestressed steel strands.

[0029] Figure 5 This is a schematic diagram of the structure of the first cylinder in one embodiment of the intelligent tensioning device for prestressed steel strands.

[0030] Figure 6 This is an exploded view of the threaded drive mechanism in one embodiment of a prestressed steel strand intelligent tensioning device.

[0031] Figure 7 This is an exploded view of the disassembly and assembly structure of an embodiment of a prestressed steel strand intelligent tensioning device.

[0032] In the diagram: 1. Base; 2. Hydraulic cylinder; 3. Horizontal platform; 4. First cylinder; 5. Second cylinder; 6. Anchor; 7. Positioning plate; 8. Guide wheel; 9. Drive shaft; 10. Lead screw; 11. Threaded sleeve; 12. Guide rod; 13. First cylindrical spring; 14. Connecting plate; 15. Connecting arm; 16. Drive wheel; 17. Fixed rod; 18. First boss; 19. Second cylindrical spring; 20. Limiting plate; 21. Driven component 21. Block; 22. Guide rail; 23. Locking tube; 24. Connecting block; 25. Locking rod; 26. Second boss; 27. Third columnar spring; 28. Arc-shaped plate; 29. ​​First bevel gear set; 30. Second bevel gear set; 31. Drive shaft; 32. Horizontal shaft; 3201. Inclined section; 3202. Straight section; 33. Trigger plate; 34. Crossbar; 35. Cross arm; 36. Drive tube; 37. Fourth columnar spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0035] Please see Figures 1-7 In this embodiment of the invention, a prestressed steel strand intelligent tensioning device includes a base 1 and a tensioning drive mechanism disposed on the base 1, and further includes:

[0036] A first cylinder 4 and a second cylinder 5 are provided. The first cylinder 4 is fixed on the base 1, and the second cylinder 5 is movably disposed on the base 1 and connected to the tensioning drive mechanism. The tensioning drive mechanism can drive the second cylinder 5 to move along the length direction of the base 1 to perform tensioning action on the steel strand between the first cylinder 4 and the second cylinder 5.

[0037] Two arc-shaped plates 28 are rotatably arranged on the base 1. Each of the two arc-shaped plates 28 has a rotation shaft connected to a transmission mechanism. The transmission mechanism is connected to an elastic triggering mechanism installed on the base 1. The elastic triggering mechanism can cooperate with the tensioning drive mechanism.

[0038] An anchor 6 is movably provided in both the first cylinder 4 and the second cylinder 5, and the anchor 6 is connected to a threaded drive mechanism installed in the first cylinder 4. The threaded drive mechanism can drive the anchor 6 to move along the axial direction of the first cylinder 4. The threaded drive mechanism also cooperates with a limiting mechanism provided on the first cylinder 4.

[0039] The positioning disk 7 is provided at one end of the first cylinder 4 and the second cylinder 5 respectively. The positioning disk 7 is provided with a plurality of positioning holes for steel strands to pass through, and the positioning disk 7 is detachably connected to the first cylinder 4 through two sets of disassembly and assembly structures.

[0040] It should be noted that the first cylinder 4 and the second cylinder 5 have the same structure. Therefore, the first cylinder 4 will be used as an example in the description of this invention.

[0041] In actual use, the two ends of the steel strand are connected to the anchors 6 in the first cylinder 4 and the second cylinder 5 respectively. The positioning plate 7 positions the steel strand through the positioning hole on it. When the tensioning drive mechanism is working, it can drive the second cylinder 5 to move along the length direction of the base 1, that is, the second cylinder 5 moves away from the first cylinder 4, and the steel strand is tensioned accordingly.

[0042] During the initial stroke of the tensioning drive mechanism, the elastic trigger mechanism is activated. The elastic trigger mechanism then drives the arc-shaped plate 28 to rotate through the transmission mechanism. The two arc-shaped plates 28 then retract, shielding the steel strands between the first cylinder 4 and the second cylinder 5, thus providing protection and preventing wire breakage during tensioning, which could lead to dangerous accidents and improve the safety of the device.

[0043] When work begins, the operator can control the threaded drive mechanism to move the anchor 6 towards the outside of the first cylinder 4 and the second cylinder 5 until the anchor 6 is exposed. During this process, the limiting mechanism will cooperate with the threaded drive mechanism to release the limiting state of the anchor 6. After the connection between the steel strand and the anchor 6 is completed, the threaded drive mechanism will drive the anchor 6 back into the first cylinder 4 and the second cylinder 5. The limiting mechanism will then limit the anchor 6 again to ensure the stability of the anchor 6 during tensioning. The disassembly and assembly structure allows for convenient assembly of the positioning plate 7, thereby facilitating work and improving work efficiency.

[0044] In summary, at the start of tensioning, the tensioning drive mechanism can cooperate with the elastic triggering mechanism, thereby causing the transmission mechanism to drive the arc-shaped plate 28 to rotate. The two arc-shaped plates 28 are in a contracted state during the tensioning of the steel strand, which can effectively play a protective role. The threaded drive mechanism can adjust the position of the anchor 6, and the disassembly and assembly structure can realize the quick assembly of the positioning plate 7. Therefore, through the cooperation between various mechanisms and components, the efficient and safe tensioning function of the steel strand is realized, which is suitable for widespread use.

[0045] It should also be noted that this device has intelligent functions. Specifically, it uses sensors to collect relevant data of the steel strand in real time and feeds it back to the computer to calculate the elongation of the steel strand. Through analysis, the speed of the oil pump motor is controlled based on the analysis results to achieve intelligent control of tension force and loading speed.

[0046] Please refer to it again. Figure 2 , Figure 3 as well as Figure 4 The base 1 has a through groove. The tensioning drive mechanism includes a horizontal platform 3 slidably fitted into the through groove and a hydraulic cylinder 2 installed at the bottom of the base 1 with its movable end fixedly connected to the horizontal platform 3. The second cylinder 5 is fixed on the horizontal platform 3. The elastic triggering mechanism is located in the through groove and cooperates with the horizontal platform 3. The elastic triggering mechanism includes two horizontal rods 34 slidably disposed in the through groove and a trigger plate 33 fixedly connected to one end of the two horizontal rods 34 facing the horizontal platform 3. The trigger plate 33 abuts against the horizontal platform 3, and a set of transmission mechanisms is respectively connected to the ends of the two horizontal rods 34 away from the trigger plate 33.

[0047] Each of the two crossbars 34 is fitted with a fourth columnar spring 37 on its outer periphery. One end of the fourth columnar spring 37 is connected to the trigger plate 33, and the other end is connected to the inner wall of the through groove.

[0048] The transmission mechanism includes a horizontal shaft 32 rotatably mounted on the bottom of the base 1 and a transmission tube 36 slidably sleeved on the horizontal shaft 32. The inner wall of the transmission tube 36 has a protruding post, and the outer wall of the horizontal shaft 32 has a sliding groove adapted to the transmission tube 36. The protruding post extends into the sliding groove and is slidably connected to the horizontal shaft 32. The sliding groove includes an inclined section 3201 and a straight section 3202 connected together. The transmission tube 36 is fixedly connected to the horizontal bar 34 via a horizontal arm 35. The rotation shaft of the arc-shaped plate 28 is connected to the transmission shaft 31 rotatably mounted on the base 1 via a first bevel gear set 29. A second bevel gear set 30 connects the transmission shaft 31 and the horizontal shaft 32.

[0049] In detail, the first bevel gear set 29 includes a first bevel gear fixedly mounted on the rotating shaft of the arc-shaped plate 28 and a second bevel gear fixedly mounted on the transmission shaft 31, wherein the second bevel gear meshes with the first bevel gear;

[0050] Similarly, the second bevel gear set 30 includes a third bevel gear fixed on the transmission shaft 31 and a fourth bevel gear fixed on a section of the transverse shaft 32 facing the transmission shaft 31, and the fourth bevel gear meshes with the third bevel gear.

[0051] When the hydraulic cylinder 2 drives the horizontal platform 3 to slide within the through groove, causing the second cylinder 5 to move away from the first cylinder 4 and pull the steel strand, the horizontal platform 3 pushes the trigger plate 33. Correspondingly, the trigger plate 33 causes the horizontal bar 34 to slide on the base 1, the fourth columnar spring 37 is compressed, and the horizontal bar 34 drives the transmission tube 36 to slide along the axis of the horizontal shaft 32 via the horizontal arm 35. At this time, the protruding post will cooperate with the sliding groove. When the protruding post slides within the inclined section 3201, it will slide with the horizontal shaft 32, causing the horizontal shaft 32 to rotate. Subsequently, the horizontal shaft 32 drives the transmission shaft 31 to rotate via the second bevel gear set 30. The transmission shaft 31 drives the arc-shaped plate 28 to sway via the first bevel gear set 29. The two arc-shaped plates 28 then perform a retraction action, which can effectively protect the steel strand during tensioning and prevent dangerous accidents.

[0052] Please refer to it again. Figure 5 and Figure 6The threaded drive mechanism includes an axial moving assembly installed inside the first cylinder 4 and connected to the anchor 6, and a drive member disposed on the outer wall of the first cylinder 4 and cooperating with the axial moving assembly. The drive member also cooperates with the limiting mechanism. The axial moving assembly includes a lead screw 10 rotatably installed in the first cylinder 4 and a threaded sleeve 11 sleeved on the lead screw 10 and threadedly connected to the lead screw 10. The threaded sleeve 11 is fixedly connected to the anchor 6, and two guide wheels 8 are installed on the outer wall of the threaded sleeve 11. The guide wheels 8 cooperate with a guide rail fixed on the inner wall of the first cylinder 4. The end of the lead screw 10 away from the anchor 6 is also provided with a cylindrical cavity, and the cylindrical cavity is provided with two strip-shaped grooves adapted to the drive member.

[0053] The driving component includes a connecting plate 14 movably disposed at the end of the first cylindrical body 4 and a driving shaft 9 rotatably mounted on the connecting plate 14. The driving shaft 9 is adapted to the cylindrical cavity, and two strip-shaped protrusions adapted to the strip-shaped groove are formed on the outer wall of the driving shaft 9. Two guide rods 12 are also fixed to the end of the first cylindrical body 4. The connecting plate 14 is slidably connected to the two guide rods 12, and a first cylindrical spring 13 is sleeved on the outer periphery of each of the two guide rods 12. One end of the first cylindrical spring 13 is connected to the first cylindrical body 4, and the other end is connected to the connecting plate 14.

[0054] The limiting mechanism includes a limiting plate 20 slidably disposed on the first cylinder 4 and a fixing rod 17 fixed to the outer wall of the first cylinder 4 and slidably connected to the limiting plate 20. A second cylindrical spring 19 is sleeved on the outer periphery of the fixing rod 17. One end of the second cylindrical spring 19 is connected to the limiting plate 20, and the other end is connected to a first boss 18 fixed to the end of the fixing rod 17 away from the first cylinder 4. A driven block 21 is fixed to the side of the limiting plate 20. The connecting plate 14 is connected to a drive wheel 16 through a connecting arm 15. The drive wheel 16 abuts against the driven block 21, and the driven block 21 has an inclined surface.

[0055] In practice, the operator needs to push the drive shaft 9 into the lead screw 10 to rotate the drive shaft 9. Then, the drive shaft 9 drives the lead screw 10 to rotate through the matching relationship between the strip-shaped protrusion and the strip-shaped groove. During the process of the drive shaft 9 entering the lead screw 10, the connecting plate 14 slides close to the first cylinder 4 on the guide rod 12, the first columnar spring 13 is compressed, the drive wheel 16 acts on the inclined surface of the driven block 21, causing the driven block 21 to drive the limiting plate 20 to slide towards the outside of the first cylinder 4, the second columnar spring 19 is compressed, and the limiting plate 20 releases the limiting state of the anchor 6, so that after the lead screw 10 rotates, the threaded sleeve 11 engages with the lead screw 10 to push the anchor 6 towards the outside of the first cylinder 4, which facilitates the connection operation between the steel strand and the anchor 6.

[0056] Please refer to it again. Figure 7 The disassembly and assembly structure includes a guide rail 22 fixed to the first cylinder 4. The guide rail 22 is adapted to a connecting block 24 fixed to the positioning plate 7. The guide rail 22 is also provided with a locking tube 23, which cooperates with an elastic locking member provided on the connecting block 24. The elastic locking member includes a locking rod 25 slidably disposed on the connecting block 24 and adapted to the locking tube 23, and a third columnar spring 27 sleeved on the outer periphery of the locking rod 25. One end of the third columnar spring 27 is connected to the connecting block 24, and the other end is connected to a second boss 26 fixed to the end of the locking rod 25.

[0057] During the assembly of the positioning disk 7, the locking rod 25 is moved to compress the third columnar spring 27. Then, the connecting block 24 is aligned with the guide rail 22, and the positioning disk 7 is pushed toward the interior of the first cylinder 4. After the locking rod 25 is aligned with the locking tube 23, the locking rod 25 is released, and the third columnar spring 27 rebounds. The locking rod 25 is then inserted into the locking tube 23, thus achieving rapid assembly of the positioning disk 7.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prestressed steel strand intelligent tensioning device, comprising a base (1) and a tensioning drive mechanism disposed on the base (1); Its features are, Also includes: A first cylinder (4) and a second cylinder (5). The first cylinder (4) is fixed on the base (1), and the second cylinder (5) is movably disposed on the base (1) and connected to the tensioning drive mechanism. The tensioning drive mechanism can drive the second cylinder (5) to move along the length direction of the base (1) to perform tensioning action on the steel strand between the first cylinder (4) and the second cylinder (5). Two arc-shaped plates (28) are rotatably arranged on the base (1). Each of the two arc-shaped plates (28) has a set of transmission mechanisms connected to its rotation shaft. The transmission mechanisms are connected to the elastic triggering mechanism installed on the base (1). The elastic triggering mechanism can cooperate with the tensioning drive mechanism. An anchor (6) is movably provided in the first cylinder (4) and the second cylinder (5), and the anchor (6) is connected to a threaded drive mechanism installed in the first cylinder (4). The threaded drive mechanism can drive the anchor (6) to move along the axial direction of the first cylinder (4). The threaded drive mechanism also cooperates with a limiting mechanism provided on the first cylinder (4). The positioning disk (7) is provided at one end of the first cylinder (4) and the second cylinder (5) respectively. The positioning disk (7) is provided with multiple positioning holes for steel strands to pass through, and the positioning disk (7) is detachably connected to the first cylinder (4) through two sets of disassembly and assembly structures. The base (1) is provided with a through groove. The tensioning drive mechanism includes a horizontal platform (3) that is slidably fitted in the through groove and a hydraulic cylinder (2) installed at the bottom of the base (1) and whose movable end is fixedly connected to the horizontal platform (3). The second cylinder (5) is fixed on the horizontal platform (3). The elastic triggering mechanism is located in the through groove and cooperates with the horizontal platform (3). The elastic triggering mechanism includes two horizontal bars (34) slidably disposed in the through groove and a trigger plate (33) fixedly connected to one end of the two horizontal bars (34) facing the horizontal platform (3). The trigger plate (33) abuts against the horizontal platform (3), and a set of transmission mechanisms is respectively connected to one end of the two horizontal bars (34) away from the trigger plate (33). Among them, a fourth columnar spring (37) is sleeved on the outer periphery of each of the two crossbars (34). One end of the fourth columnar spring (37) is connected to the trigger plate (33), and the other end is connected to the inner wall of the through groove. The transmission mechanism includes a horizontal shaft (32) rotatably mounted on the bottom of the base (1) and a transmission tube (36) slidably sleeved on the horizontal shaft (32). The inner wall of the transmission tube (36) is provided with a protruding post, and the outer wall of the horizontal shaft (32) is provided with a sliding groove adapted to the transmission tube (36). The protruding post extends into the sliding groove and is slidably connected to the horizontal shaft (32). The sliding groove includes an inclined section (3201) and a straight section (3202) connected together. The transmission tube (36) is fixedly connected to the crossbar (34) via the cross arm (35), and the rotation shaft of the arc plate (28) is connected to the transmission shaft (31) rotatably mounted on the base (1) via the first bevel gear set (29). A second bevel gear set (30) is connected between the transmission shaft (31) and the cross shaft (32).

2. The intelligent tensioning device for prestressed steel strands according to claim 1, characterized in that, The threaded drive mechanism includes an axial moving component installed inside the first cylinder (4) and connected to the anchor (6), and a drive component disposed on the outer wall of the first cylinder (4) and cooperating with the axial moving component. The drive component also cooperates with the limiting mechanism.

3. The intelligent tensioning device for prestressed steel strands according to claim 2, characterized in that, The axial movement assembly includes a lead screw (10) rotatably mounted in the first cylinder (4) and a threaded sleeve (11) sleeved on the lead screw (10) and threadedly connected to the lead screw (10). The threaded sleeve (11) is fixedly connected to the anchor (6), and two guide wheels (8) are installed on the outer wall of the threaded sleeve (11). The guide wheels (8) cooperate with the guide rail fixed on the inner wall of the first cylinder (4). The end of the lead screw (10) away from the anchor (6) is also provided with a cylindrical cavity, and two strip grooves adapted to the driving component are provided in the cylindrical cavity.

4. The intelligent tensioning device for prestressed steel strands according to claim 3, characterized in that, The driving component includes a connecting plate (14) movably disposed at the end of the first cylinder (4) and a driving shaft (9) rotatably mounted on the connecting plate (14). The driving shaft (9) is adapted to the cylindrical cavity, and two strip-shaped protrusions adapted to the strip-shaped groove are formed on the outer wall of the driving shaft (9). Two guide rods (12) are fixed at the end of the first cylinder (4). The connecting plate (14) is slidably connected to the two guide rods (12). A first columnar spring (13) is sleeved on the outer periphery of each of the two guide rods (12). One end of the first columnar spring (13) is connected to the first cylinder (4), and the other end is connected to the connecting plate (14).

5. The intelligent tensioning device for prestressed steel strands according to claim 4, characterized in that, The limiting mechanism includes a limiting plate (20) slidably disposed on the first cylinder (4) and a fixing rod (17) fixed on the outer wall of the first cylinder (4) and slidably connected to the limiting plate (20). A second columnar spring (19) is sleeved on the outer periphery of the fixing rod (17). One end of the second columnar spring (19) is connected to the limiting plate (20), and the other end is connected to a first boss (18) fixed on the fixing rod (17) away from the first cylinder (4). The limiting plate (20) has a driven block (21) fixed on its side. The connecting plate (14) is connected to a drive wheel (16) via a connecting arm (15). The drive wheel (16) abuts against the driven block (21), and the driven block (21) has an inclined surface.

6. The intelligent tensioning device for prestressed steel strands according to claim 1, characterized in that, The disassembly and assembly structure includes a guide rail (22) fixed on the first cylinder (4), the guide rail (22) is adapted to the connecting block (24) fixed on the positioning plate (7), and the guide rail (22) is also provided with a locking tube (23), the locking tube (23) cooperates with the elastic locking member provided on the connecting block (24); The elastic locking member includes a locking rod (25) that is slidably disposed on the connecting block (24) and adapted to the locking tube (23), and a third columnar spring (27) sleeved on the outer periphery of the locking rod (25). One end of the third columnar spring (27) is connected to the connecting block (24), and the other end is connected to a second boss (26) fixed at the end of the locking rod (25).

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