Reinforcing steel bar prestress tensioning device

Abstract

The invention relates to the technical field of tensioning devices, and discloses a reinforcing steel bar prestress tensioning device which comprises a table body, the inner wall of the table body is slidably connected with a bottom plate, the top side of the bottom plate is fixedly connected with a tensioning cylinder, the right side of the tensioning cylinder is fixedly connected with a disc, and the right side of the disc is in contact with a column body; a plurality of arc-shaped plates are fixedly connected to the right side of the column body, a threaded cylinder is slidably connected to the inner wall of the right end of the column body, a plurality of rotating columns are fixedly connected to the right end of the threaded cylinder, a rotating assembly is arranged on the inner wall of the threaded cylinder, and a rotating handle is fixedly connected to the right side of the rotating assembly. According to the device, steel bars with different thicknesses can be fixed and limited, a specific device does not need to be prepared for the steel bars with different sizes, the inventory cost and the field management complexity are reduced, and then the use range of the device is widened; and meanwhile, the steel bars can be pre-tightened.

Description

Technical Field

[0001] The invention relates to the technical field of tensioning devices, and in particular to a steel bar prestressing tensioning device. Background Art

[0002] Prestressing is an engineering technique used to reinforce concrete structures to increase their load-bearing capacity and earthquake resistance. This process effectively increases the strength and stability of the structure by prestressing steel bars in the concrete to offset the compressive forces of the concrete under load.

[0003] After searching, the Chinese patent document announcement number: CN208981793U discloses a prestressed steel bar tensioning device, including a fixed plate and a fixed seat, the other end of the fixed seat is provided with a first groove, one end of the first groove is connected to the end face of the through hole, the first clamping block and the second clamping block are slidably connected inside the first groove, the upper end face of the first clamping block and the lower end face of the second clamping block are both provided with a clamping groove, the side of the first clamping block is fixedly connected with a slider, the lower end side of the first groove is provided with a slide groove, the slider is slidably connected to the inside of the slide groove, the first clamping block is provided with a first chamber inside, the first chamber is fixedly connected with a first motor inside, the shaft end of the first motor is fixedly connected with a first sprocket, the upper end of the first clamping block is fixedly connected with a first bearing on both sides, and the first bearing is fixedly connected with a threaded shaft inside. The prestressed steel bar tensioning device is simple to clamp steel bars and improves work efficiency.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the above patent mentioned in the beneficial effects: "The steel bar prestressing tensioning device can conveniently fix the steel bars through the first motor, the first sprocket, the second sprocket, the threaded shaft, the threaded groove, the first clamp block, the second clamp block and the clamp groove, thereby saving time and improving work efficiency." Although the above patent improves work efficiency by fixing the steel bars, in the specific operation process, it is impossible to restrict and fix steel bars of different thicknesses and requires a special device to carry out construction, resulting in a smaller range of use of the device. Therefore, in view of the above shortcomings, a steel bar prestressing tensioning device is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a steel bar prestressing tensioning device, aiming to improve the problem in the prior art that devices with multiple characteristics are required to correspond to steel bars of different thicknesses, resulting in a smaller range of use of the device.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The top end of the lifting plug in the lifting plug has a spring, and the bottom end of the lifting plug has a spring, and the bottom end of the lifting plug has a spring, and the other end of the lifting plug has a spring.

[0008] As a further description of the above technical solution:

[0009] The plurality of sliding assemblies each comprise an arc block, the inner walls of the plurality of arc blocks are fixedly connected on one side thereof with a strong spring, the opposite sides of the strong springs are fixedly connected to a triangular column, the opposite sides of the triangular columns are fixedly connected to a sliding rod, the opposite sides of the sliding rods are fixedly connected to a splint, the opposite sides of the splints are in contact with a steel bar, the rear side of the opening block is fixedly connected to a connecting block, the rear side of the connecting block is fixedly connected to a linking block, and the opposite sides of the linking blocks are fixedly connected to a spring 1.

[0010] As a further description of the above technical solution:

[0011] The left side of the tensioning cylinder is fixedly connected with a sleeve, the inner wall of the sleeve is slidably connected with a supporting cylinder, the outer right end of the supporting cylinder is fixedly connected with a vertical plate, the front and rear ends of the left side of the vertical plate are fixedly connected with support blocks, the far sides of the two support blocks are fixedly connected with right-angle columns, the front and rear ends of the right side of the vertical plate are fixedly connected with the support plate, and the far sides of the two support plates are fixedly connected with a rotating block, the interior of the rotating block is fixedly connected with a fixed rod, and a rotating assembly is provided on the outside of the fixed rod, and a fixed shaft is fixedly connected to the middle of the rotating assembly, and the left and right ends of the fixed shaft are rotatably connected with arch plates, each two arch plates are fixedly connected with one of the square frames on the top side, and a limiting plate is slidably connected to the inner wall of the square frame, and the left and right sides of the limiting plate are fixedly connected with limiting blocks, and a telescopic assembly is provided on the top side of the limiting plate, and the top side of the telescopic assembly is fixedly connected with a fixed frame.

[0012] As a further description of the above technical solution:

[0013] A plurality of upright blocks are fixedly connected to the bottom side of the inner wall of the platform body, and a driving assembly is fixedly connected to the bottom side of the inner wall of the platform body, wherein the inner walls of several of the upright blocks are fixedly connected to driven shafts, wherein the outsides of several of the driven shafts are rotatably connected to fixed plates, and the far ends of the plurality of fixed plates are rotatably connected to connecting plates, and the top end of the connecting plate is rotatably connected to a square plate.

[0014] As a further description of the above technical solution:

[0015] The driving assembly includes a motor, the bottom side of which is fixedly connected to the bottom side of the inner wall of the platform body, the driving end of the motor is fixedly connected to a rotating shaft, and the front end of the rotating shaft is rotatably connected to the inner wall of one of the vertical blocks.

[0016] As a further description of the above technical solution:

[0017] The front end of the rotating shaft is fixedly connected to the inner wall of the bottom end of one of the fixed plates, and the top sides of the plurality of square plates are fixedly connected to the bottom side of the bottom plate.

[0018] As a further description of the above technical solution:

[0019] The rotating assembly includes a threaded rod, the external thread of the threaded rod is connected to the inner wall of the threaded barrel, the left side of the threaded rod is fixedly connected to a circular plate, the right side of the column is provided with a plurality of T-shaped openings, the right side of the threaded rod is fixedly connected to the left side of the handle, and the outer portion of the circular plate is rotatably connected to the middle inner wall of the column.

[0020] As a further description of the above technical solution:

[0021] The rotating assembly comprises a fixed rod, the outer portion of the fixed rod is fixedly connected to the inner wall of the rotating block, the outer portion of the fixed rod is rotatably connected to a pull plate, and the bottom side of the pull plate is fixedly connected to a handle.

[0022] As a further description of the above technical solution:

[0023] The telescopic assembly comprises a strip plate, the bottom side of which is fixedly connected to the top side of the limiting plate, a second spring is sleeved on the outside of the strip plate, and the top side of the strip plate is fixedly connected to the bottom side of the fixing frame.

[0024] As a further description of the above technical solution:

[0025] The bottom side of the second spring is fixedly connected to the top side of the limiting plate, the top side of the second spring is fixedly connected to the top side of the inner wall of the square frame, and the outside of the strip plate is slidably connected to the top inner wall of the square frame.

[0026] The present invention has the following beneficial effects:

[0027] 1. In the present invention, by using a handle, a slider, a circular plate, an inclined plate, a rotating drum and other structures in coordination, it is possible to fix and restrict steel bars of different thicknesses, without having to prepare a specific device for each size of steel bars, thereby reducing inventory costs and the complexity of on-site management, and further increasing the scope of use of the device; at the same time, the steel bars can be pre-tightened to prevent the steel bars from shrinking when relaxed, and deformation can be reduced, structural stability can be improved, service life can be extended, and the risk of fracture can be reduced.

[0028] 2. In the present invention, by using the structures such as the vertical plate, the support block, the right-angle column, the support plate, the rotating block, and the fixing rod in coordination, the sleeve and the support tube can be quickly docked and fixed, which can significantly reduce the assembly time, save manpower and time costs, and workers can complete the assembly task more quickly, thereby improving work efficiency.

[0029] 3. In the present invention, by using a rotating shaft, a driven shaft, a fixed plate, a connecting plate, a square plate and other structures in coordination, steel bars of different heights can be fixed and tensioned, so that the height of the device can be adjusted according to specific circumstances and needs, so that it can adapt to different working environments, terrains or usage scenarios, and thus better meet the needs of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional diagram of a steel bar prestressing tensioning device proposed by the present invention;

[0031] Figure 2 A schematic diagram of a disc structure of a steel bar prestressing tensioning device proposed by the present invention;

[0032] Figure 3 A schematic diagram of the internal structure of a column of a steel bar prestressing tensioning device proposed by the present invention;

[0033] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0034] Figure 5 A schematic diagram of the internal structure of an arc block of a steel bar prestressing tensioning device proposed by the present invention;

[0035] Figure 6 A schematic diagram of the structure of an opening block of a steel bar prestressing tensioning device proposed by the present invention;

[0036] Figure 7 A schematic diagram of a vertical plate structure of a steel bar prestressing tensioning device proposed by the present invention;

[0037] Figure 8 A schematic diagram of a square frame structure of a steel bar prestressing tensioning device proposed by the present invention;

[0038] Fig. 9 The present invention provides a schematic diagram of the internal structure of a steel bar prestressing tensioning device.

[0039] Legend:

[0040] 1. Platform; 2. Bottom plate; 3. Tensioning cylinder; 4. Disc; 5. Cylinder; 6. Arc plate; 7. Threaded cylinder; 8. Rotating column; 9. Threaded rod; 10. T-shaped opening; 11. Turning handle; 12. Sliding block; 13. Circular plate; 14. Inclined plate; 15. Rotating cylinder; 16. Rotating plate; 17. Rotating plate; 18. Opening block; 19. Arc block; 20. Strong spring; 21. Triangular column; 22. Sliding rod; 23. Clamp; 24. Reinforcement bar; 25. Connecting block; 26. Connecting block; 27. Spring One; 28. Sleeve; 29. ​​Support tube; 30. Vertical plate; 31. Support block; 32. Right-angle column; 33. Support plate; 34. Rotating block; 35. Fixed rod; 36. Pull plate; 37. Handle; 38. Fixed shaft; 39. Arch plate; 40. Square frame; 41. Limiting plate; 42. Limiting block; 43. Strip plate; 44. Spring two; 45. Fixed frame; 46. Vertical block; 47. Motor; 48. Rotating shaft; 49. Driven shaft; 50. Fixed plate; 51. Connecting plate; 52. Square plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Reference Figure 1 - Figure 2 An embodiment of the present invention is a prestressed steel bar tensioning device, comprising a platform 1, the inner wall of the platform 1 is slidably connected to a bottom plate 2, the bottom plate 2 can slide on the inner wall of the platform 1, this design allows the entire tensioning device to be adjusted according to steel bars of different lengths, increasing the flexibility and applicability of the device, a tensioning cylinder 3 is fixedly connected to the top side of the bottom plate 2, a disc 4 is fixedly connected to the right side of the tensioning cylinder 3, a column 5 is in contact with the right side of the disc 4, ensuring uniform distribution of force, thereby improving tensioning efficiency and tensioning quality of the steel bars, a plurality of arc plates 6 are fixedly connected to the right side of the column 5 for limiting the steel bars 24.

[0043] Reference Figure 2 - Figure 4The inner wall of the right end of the column 5 is slidably connected with a threaded cylinder 7. The threaded cylinder 7 can slide horizontally through the restriction of the column 5. The right end of the threaded cylinder 7 is fixedly connected with a plurality of rotating columns 8. The rotating columns 8 are driven to slide together during the sliding process of the threaded cylinder 7. The inner wall of the threaded cylinder 7 is provided with a rotating assembly, which includes a threaded rod 9. The outer thread of the threaded rod 9 is connected to the inner wall of the threaded cylinder 7. The threaded cylinder 7 is driven to slide through the rotation of the threaded rod 9. The left side of the threaded rod 9 is fixedly connected with a circular plate 13 for limiting the threaded rod 9 and preventing the threaded rod 9 from sliding off. The right side of the column 5 is provided with a plurality of T-shaped openings 10.

[0044] The right side of the threaded rod 9 is fixedly connected to the left side of the turning handle 11, which is convenient for driving the threaded rod 9 to rotate. The outer side of the circular plate 13 is rotatably connected to the middle inner wall of the column 5. The right side of the rotating assembly is fixedly connected to the turning handle 11. The left ends of the front and rear sides of the threaded cylinder 7 are fixedly connected to sliders 12. The threaded cylinder 7 is restricted by the sliders 12 so that the threaded cylinder 7 converts the rotating force into a sliding force. The right side of the column 5 is rotatably connected to a rotating cylinder 15. The inner wall of the rotating cylinder 15 is fixedly connected to a plurality of inclined plates 14. The inclined plates 14 are forced to drive the rotating cylinder 15 to slide. The outer side of the rotating cylinder 15 is fixedly connected to a plurality of rotating plates 16, so that the rotating cylinder 15 can drive the rotating plate 16 to rotate. The far ends of the plurality of rotating plates 16 are rotatably connected to rotating plates 17, thereby driving the rotating plate 17 to rotate.

[0045] Reference Figure 2 , Figure 5 and Figure 6 , the far ends of the multiple rotating plates 17 are rotatably connected with the opening blocks 18, thereby driving the opening blocks 18 to slide, the far sides of the multiple opening blocks 18 are provided with sliding components, and the multiple sliding components include arc blocks 19, and the inner walls of the multiple arc blocks 19 are fixedly connected with strong springs 20 on the near side, and the far sides of the multiple strong springs 20 are fixedly connected with triangular columns 21, and the two sides of the strong springs 20 are fixed so that the strong springs 20 can be evenly stressed, and the far sides of the multiple triangular columns 21 are fixedly connected with sliding rods 22, and the force is transmitted to the triangular columns 21 through the sliding rods 22;

[0046] The far sides of the multiple sliding rods 22 are fixedly connected with a clamping plate 23, and the reaction force exerted by the clamping plate 23 on restricting the steel bars 24 of different thicknesses pushes the clamping plate 23 to slide. The far sides of the multiple clamping plates 23 are in contact with the steel bars 24, and the rear side of the opening block 18 is fixedly connected with a connecting block 25, which is driven by the opening block 18 to slide. The rear side of the connecting block 25 is fixedly connected with a connecting block 26, thereby driving the connecting block 26 to slide inside the column 5 to provide supporting force. The far sides of the multiple connecting blocks 26 are fixedly connected with a spring 27, and the spring 27 is fixed so that the spring 27 can be evenly stressed.

[0047] Reference Figure 1 , Figure 7 and Figure 8 The left side of the tensioning cylinder 3 is fixedly connected with a sleeve 28, and the inner wall of the sleeve 28 is slidably connected with a support cylinder 29. The right end of the outer side of the support cylinder 29 is fixedly connected with a vertical plate 30. The front and rear ends of the left side of the vertical plate 30 are fixedly connected with support blocks 31 to provide support force for the support blocks 31. The far sides of the two support blocks 31 are fixedly connected with right-angle columns 32 for engaging with the fixed frame 45. The front and rear ends of the right side of the vertical plate 30 are fixedly connected with support plates 33 to provide support force for the support plates 33. The far sides of the two support plates 33 are fixedly connected with rotating The rotating block 34 is provided with a fixed rod 35 fixedly connected to the inside of the rotating block 34, and a rotating assembly is arranged outside the fixed rod 35. The rotating assembly includes the fixed rod 35, and the outside of the fixed rod 35 is fixedly connected to the inner wall of the rotating block 34 to provide support for the fixed rod 35. The outside of the fixed rod 35 is rotatably connected to a pull plate 36. The pull plate 36 can rotate with the fixed rod 35 as a center point through the restriction of the fixed rod 35. The bottom side of the pull plate 36 is fixedly connected with a handle 37 to facilitate the movement of the pull plate 36 for rotation. The middle part of the rotating assembly is fixedly connected with a fixed shaft 38.

[0048] The left and right ends of the fixed shaft 38 are rotatably connected with an arch plate 39, and the arch plate 39 is displaced by the movement of the fixed shaft 38. The top sides of each of the two arch plates 39 are fixedly connected with one of the square frames 40, thereby driving the square frame 40 to displace. The inner wall of the square frame 40 is slidably connected with a limiting plate 41 for providing support for the strip plate 43. The left and right sides of the limiting plate 41 are fixedly connected with limiting blocks 42. The top side of the limiting plate 41 is provided with a telescopic component, which includes a strip plate 43. The bottom side of the strip plate 43 is fixedly connected to the top side of the limiting plate 41. The strip plate 43 provides supporting force, and a spring 2 44 is sleeved on the outside of the strip plate 43. The bottom side of the spring 2 44 is fixedly connected to the top side of the limiting plate 41, and the top side of the spring 2 44 is fixedly connected to the top side of the inner wall of the square frame 40, so that the spring 2 44 is restricted and fixed so that the spring 2 44 can be evenly stressed. The outside of the strip plate 43 is slidably connected to the top inner wall of the square frame 40, and the top side of the strip plate 43 is fixedly connected to the bottom side of the fixed frame 45, providing supporting force for the fixed frame 45 to facilitate the engagement with the right-angle column 32, and the top side of the telescopic component is fixedly connected to the fixed frame 45.

[0049] Reference Figure 1 and Fig. 9The bottom side of the inner wall of the platform 1 is fixedly connected with a plurality of vertical blocks 46 to provide support force for the vertical blocks 46. The bottom side of the inner wall of the platform 1 is fixedly connected with a driving assembly, and the driving assembly includes a motor 47, a driving source. The bottom side of the motor 47 is fixedly connected to the bottom side of the inner wall of the platform 1, so that the motor 47 can operate stably. The driving end of the motor 47 is fixedly connected with a rotating shaft 48, and the rotating shaft 48 is driven to rotate by the driving motor 47. The front end of the rotating shaft 48 is rotatably connected to the inner wall of one of the vertical blocks 46, and several of the vertical blocks 46 The inner walls are fixedly connected with driven shafts 49, which drive one of the upright blocks 46 to rotate. The outsides of several driven shafts 49 are rotatably connected with fixed plates 50 to provide support for the remaining fixed plates 50. The far ends of the multiple fixed plates 50 are rotatably connected with connecting plates 51, and the top of the connecting plates 51 is rotatably connected with a square plate 52. The front end of the rotating shaft 48 is fixedly connected to the bottom inner wall of one of the fixed plates 50, and the top sides of the multiple square plates 52 are fixedly connected to the bottom side of the bottom plate 2.

[0050] Working principle: We pass the sleeve 28, the tensioning cylinder 3, the disc 4 and the column 5 through the steel bars 24 of different thicknesses in sequence, and then apply a rotational force by holding the turning handle 11, which then drives the threaded rod 9 to rotate, thereby driving the threaded cylinder 7 to rotate, and the sliders 12 fixed on the front and rear sides of the threaded cylinder 7 slide inside the column 5, so that it converts the rotational force exerted on the threaded cylinder 7 into a sliding force, and then drives the rotating column 8 to slide, and then each rotating column 8 will push an inclined plate 14, so that the inclined plate 14 can drive the rotating cylinder 15 to rotate, thereby driving the rotating plate 16 to slide, and then driving the rotating plate 17 to slide, the Rongguang rotating plate 17 drives the opening block 18 to rotate and can push the opening block 18 to slide, and drives the connecting block 25 to slide on the inner wall of the column 5 through the opening block 18, and at the same time the connecting block 25 will also drive the connecting block 26 to slide The inner wall of the column 5 provides support for the opening block 18, and the spring 1 27 is squeezed during the sliding of the connecting block 26, so that the spring 1 27 can store elastic potential energy, and then give the opening block 18 a force in the opposite direction to reset, and finally transmit the force to the rotating drum 15 for rotation and reset, and the opening block 18 will also push the arc block 19 to slide, and then the arc block 19 will push the clamping plate 23 to contact the steel bar, and then the steel bar will give the clamping plate 23 a force in the opposite direction, thereby pushing the sliding rod 22 to slide, and then driving the triangular column 21 to slide, and the triangular column 21 will also squeeze the strong spring 20, so that the strong spring 20 can store elastic potential energy, and then give the clamping plate 23 a force in the opposite direction to fix and restrict the steel bar, thereby preventing the steel bar from shrinking when it is relaxed, and can also reduce deformation, improve structural stability, extend service life and reduce the risk of breakage;

[0051] After the sleeve 28 and the support tube 29 are connected, the handle 37 is held so that the handle 37 can drive the pull plate 36 to move around the fixed rod 35, and then push the fixed shaft 38 to slide, and the arch plate 39 rotates outside the fixed shaft 38, so that the fixed shaft 38 can slide downward, and the fixed frame 45 will first be engaged with the support block 31 on the left side of the sleeve 28, and the right-angle column 32 fixed on one side of the support block 31 can adapt to the fixed frame 45 to provide supporting force, and then the arch plate 39 will drive the square frame 40 to slide, thereby pushing the spring 2 44 to slide outside the strip plate 43, and at the same time fixedly squeezed with the limiting plate 41, so as to complete the splicing and fixing of the sleeve 28 and the support tube 29;

[0052] Then, the driving motor 47 drives the rotating shaft 48 to rotate, thereby driving one of the fixed plates 50 to slide, and then pushing one of the connecting plates 51 to rotate, and then pushing the square plate 52 to move upward, and the square plate 52 pushes the bottom plate 2 to move upward, so that the device as a whole can adapt to the use of different heights, and the bottom plate 2 will also drive the other three square plates 52 to move, thereby driving three of the connecting plates 51 to rotate, and then driving three of the fixed plates 50 to rotate outside the driven shaft 49 to provide support force.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed steel bar tensioning device, comprising a platform (1), characterized in that: The inner wall of the platform (1) is slidably connected to a bottom plate (2), the top side of the bottom plate (2) is fixedly connected to a tensioning cylinder (3), the right side of the tensioning cylinder (3) is fixedly connected to a disc (4), the right side of the disc (4) is in contact with a column (5), the right side of the column (5) is fixedly connected to a plurality of arc-shaped plates (6), the right end inner wall of the column (5) is slidably connected to a threaded cylinder (7), the right end of the threaded cylinder (7) is fixedly connected to a plurality of rotating columns (8), the inner wall of the threaded cylinder (7) is provided with a rotating assembly, and the right side of the rotating assembly is fixedly connected to A turning handle (11), the left ends of both front and rear sides of the threaded cylinder (7) are fixedly connected with sliders (12), the right side of the column (5) is rotatably connected with a rotating cylinder (15), the inner wall of the rotating cylinder (15) is fixedly connected with a plurality of inclined plates (14), the outer side of the rotating cylinder (15) is fixedly connected with a plurality of rotating plates (16), the far ends of the plurality of rotating plates (16) are rotatably connected with rotating plates (17), the far ends of the plurality of rotating plates (17) are rotatably connected with opening blocks (18), and the far sides of the plurality of opening blocks (18) are provided with sliding components.

2. A prestressed steel bar tensioning device according to claim 1, characterized in that: The plurality of sliding assemblies each comprise an arc block (19), the inner walls of the plurality of arc blocks (19) are fixedly connected to a strong spring (20) on the proximal side thereof, the plurality of strong springs (20) are fixedly connected to a triangular column (21) on the distal side thereof, the plurality of triangular columns (21) are fixedly connected to a sliding rod (22) on the distal side thereof, the plurality of sliding rods (22) are fixedly connected to a clamping plate (23) on the distal side thereof, the plurality of clamping plates (23) are in contact with a steel bar (24) on the distal side thereof, the opening block (18) is fixedly connected to a connecting block (25) on the rear side thereof, the connecting block (25) is fixedly connected to a connecting block (26) on the rear side thereof, and the plurality of connecting blocks (26) are fixedly connected to a spring 1 (27) on the distal side thereof.

3. A prestressed steel bar tensioning device according to claim 1, characterized in that: The left side of the tensioning cylinder (3) is fixedly connected to a sleeve (28), the inner wall of the sleeve (28) is slidably connected to a support cylinder (29), the outer right end of the support cylinder (29) is fixedly connected to a vertical plate (30), the left front and rear ends of the vertical plate (30) are fixedly connected to support blocks (31), the far sides of the two support blocks (31) are fixedly connected to right-angle columns (32), the right front and rear ends of the vertical plate (30) are fixedly connected to support plates (33), the far sides of the two support plates (33) are fixedly connected to rotating blocks (34), and the interior of the rotating blocks (34) is fixedly connected to the support plates (33). A fixed rod (35) is provided, a rotating assembly is arranged outside the fixed rod (35), a fixed shaft (38) is fixedly connected to the middle of the rotating assembly, the left and right ends of the fixed shaft (38) are rotatably connected to arch plates (39), the top sides of each of the two arch plates (39) are fixedly connected to one of the square frames (40), the inner wall of the square frame (40) is slidably connected to a limiting plate (41), the left and right sides of the limiting plate (41) are fixedly connected to limiting blocks (42), a telescopic assembly is arranged on the top side of the limiting plate (41), and the top side of the telescopic assembly is fixedly connected to a fixed frame (45).

4. A prestressed steel bar tensioning device according to claim 1, characterized in that: A plurality of upright blocks (46) are fixedly connected to the bottom side of the inner wall of the platform body (1), and a driving assembly is fixedly connected to the bottom side of the inner wall of the platform body (1), wherein the inner walls of several of the upright blocks (46) are fixedly connected to driven shafts (49), wherein the outsides of several of the driven shafts (49) are rotatably connected to fixed plates (50), and the far ends of the plurality of fixed plates (50) are rotatably connected to connecting plates (51), and the top end of the connecting plate (51) is rotatably connected to a square plate (52).

5. A prestressed steel bar tensioning device according to claim 4, characterized in that: The driving assembly comprises a motor (47), the bottom side of the motor (47) is fixedly connected to the bottom side of the inner wall of the platform (1), the driving end of the motor (47) is fixedly connected to a rotating shaft (48), and the front end of the rotating shaft (48) is rotatably connected to the inner wall of one of the vertical blocks (46).

6. A prestressed steel bar tensioning device according to claim 5, characterized in that: The front end of the rotating shaft (48) is fixedly connected to the inner wall of the bottom end of one of the fixed plates (50), and the top sides of the plurality of square plates (52) are fixedly connected to the bottom side of the bottom plate (2).

7. A prestressed steel bar tensioning device according to claim 1, characterized in that: The rotating assembly comprises a threaded rod (9), the outer thread of the threaded rod (9) is connected to the inner wall of the threaded barrel (7), the left side of the threaded rod (9) is fixedly connected to a circular plate (13), the right side of the column (5) is provided with a plurality of T-shaped openings (10), the right side of the threaded rod (9) is fixedly connected to the left side of the turning handle (11), and the outer part of the circular plate (13) is rotatably connected to the middle inner wall of the column (5).

8. A prestressed steel bar tensioning device according to claim 3, characterized in that: The rotating assembly comprises a fixed rod (35), the outer portion of the fixed rod (35) is fixedly connected to the inner wall of the rotating block (34), the outer portion of the fixed rod (35) is rotatably connected to a pull plate (36), and the bottom side of the pull plate (36) is fixedly connected to a handle (37).

9. A prestressed steel bar tensioning device according to claim 3, characterized in that: The telescopic assembly comprises a strip plate (43), the bottom side of the strip plate (43) is fixedly connected to the top side of the limiting plate (41), a spring 2 (44) is sleeved on the outside of the strip plate (43), and the top side of the strip plate (43) is fixedly connected to the bottom side of the fixing frame (45).

10. A prestressed steel bar tensioning device according to claim 9, characterized in that: The bottom side of the second spring (44) is fixedly connected to the top side of the limiting plate (41), the top side of the second spring (44) is fixedly connected to the top side of the inner wall of the square frame (40), and the outside of the strip plate (43) is slidably connected to the top inner wall of the square frame (40).

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