Full-automatic tensioning machine

Abstract

The utility model relates to the technical field of constructional engineering, and discloses a full-automatic tensioning machine which comprises a hot rolling light rail, a lifting platform is connected to the hot rolling light rail in a sliding mode and can slide in the length direction of the hot rolling light rail, and a double-shaft moving device is arranged at the lifting end of the lifting platform. An elastic platform used for automatic alignment of a tensioning screw rod on the model is arranged at the moving end of the double-shaft moving device, and an automatic threading assembly is arranged on the surface of the side, away from the double-shaft moving device, of the elastic platform and used for being rapidly connected with the tensioning screw rod on the model. The prestress tensioning device has the advantages that various functions of lifting, double-shaft moving, automatic alignment, automatic threading, tensioning, automatic locking and the like are integrated, the whole-course automation of the prestress tensioning process is realized, the labor intensity of operators is greatly reduced, the working efficiency is improved, meanwhile, construction errors caused by human factors are reduced, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a full-automatic tensioning machine. Background Art

[0002] Prestressed concrete engineering is part of the concrete structure of buildings and bridges. Only with prestressed concrete engineering can large-span concrete bridges across rivers and seas and various types of cement products with light structures and strong load-bearing capacity for the containment vessels of nuclear power plant reactors be realized. The tensioning machine is mainly composed of three parts: the main machine, the hydraulic system, and the sensor. The main machine provides mechanical power, the hydraulic system provides tensioning force, and the sensor precisely controls the tensioning force. When working, the tensioning machine uses the hydraulic system to tension the steel cables or prestressed tendons to the predetermined stress value, and then fixes and grouts them to finally form a prestressed structure.

[0003] Traditional tensioning machines usually use manual tensioning rod sleeves and manual locking nuts. Due to differences in operator skill levels and experience, the threading accuracy may be low, and the depth and thickness of the threads may be uneven, affecting the tensioning effect. In addition, during on-site construction, operators are required to perform repetitive labor for a long time, which is labor-intensive and has low production efficiency. Therefore, a fully automatic tensioning machine is proposed to solve the above problems. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a fully automatic tensioning machine, comprising a hot-rolled light rail, wherein a lifting platform is slidably connected to the hot-rolled light rail, and the lifting platform can slide along the length direction of the hot-rolled light rail, and the lifting end of the lifting platform is provided with a biaxial moving device, and the moving end of the biaxial moving device is provided with an elastic platform for automatically aligning the tensioning wire rod on the model, and the surface of the elastic platform away from the biaxial moving device is provided with an automatic threading assembly, which is used to quickly connect with the tensioning wire rod on the model, and one side surface of the automatic threading assembly is provided with a tensioning device for applying tensioning force to the tensioning wire rod on the model, and the other side surface is provided with an automatic locking assembly.

[0005] Furthermore, the lifting platform includes a lower frame arranged on the hot-rolled light rail, pulleys are provided at the four corners of the lower frame, a first electric push rod is provided on the lower frame, and an upper frame is provided at the telescopic end of the first electric push rod, a guide rod is provided on one side surface of the lower frame, and a guide sleeve adapted to the guide rod is provided on one side surface of the upper frame, and the guide rod is slidably connected in the guide sleeve, a guide screw with one end passing through the upper frame is provided on one side surface of the lower frame, and a locking nut is threadedly connected to the guide screw.

[0006] Furthermore, the biaxial moving device includes a longitudinal moving member and a transverse moving member arranged at a moving end of the longitudinal moving member.

[0007] Furthermore, the longitudinal moving part includes a first stepper motor fixedly mounted on the upper frame, the output end coupling of the first stepper motor is connected to a screw rod, a screw rod nut seat is threadedly connected to the screw rod, and an adjustment plate is provided on one side surface of the screw rod nut seat, and the adjustment plate is slidably connected to the upper frame.

[0008] Furthermore, the transverse moving member includes a second electric push rod fixedly mounted on the adjustment plate surface, the telescopic end of the second electric push rod is provided with a moving plate, the moving plate is slidably connected to the side surface of the adjustment plate, and the elastic platform is provided on the moving plate surface.

[0009] Furthermore, the elastic platform includes a lower connecting plate, which is arranged on one side surface of the movable plate, and columns are provided at the four corners of the top of the lower connecting plate. An upper connecting plate is provided at the other end of the column, and a first spring is provided between the lower connecting plate and the upper connecting plate and is sleeved on the outside of the column. Several spring sleeves are provided on the opposite side surfaces of the lower connecting plate and the upper connecting plate, and a second spring is provided between the upper and lower adjacent spring sleeves.

[0010] Furthermore, the automatic threading assembly includes a frame with an opening on one side, the frame is arranged on one side surface of the upper connecting plate, and the second stepper motor and the box body are respectively installed on the frame body through two elastic members. The output end of the second stepper motor is rotatably connected to the driving gear through a cross coupling, and the driving gear is rotatably connected to the box body. The box body is rotatably connected to a driven gear meshing with the driving gear, and the driven gear is rotatably connected to a through-set external spline sleeve, and the inner side of the external spline sleeve is clamped with an internal spline sleeve.

[0011] Furthermore, the tensioning device includes a hydraulic tensioning mechanism arranged on an elastic platform, one end of the tensioning screw rod on the hydraulic tensioning mechanism is threadedly connected to a screw rod sleeve, the other end of the screw rod sleeve is threadedly connected to a limiting nut sleeve, and a T-shaped joint is slidably connected inside the limiting nut sleeve. One end of the T-shaped joint is fixedly connected to one end of the internal spline sleeve, and a third spring located in the screw rod sleeve is arranged between the other end and the tensioning screw rod.

[0012] Furthermore, the automatic locking assembly includes a frame, a frame is installed on the frame through an elastic part, a hydraulic motor is fixedly installed on the frame, a torsion body is rotatably connected to the frame for locking the tensioning nut on the model, and the hydraulic motor and the torsion body are connected through a gear transmission mechanism.

[0013] Furthermore, it includes a correction component, which includes a mounting base fixedly mounted on the surface of the adjustment plate, and there are two mounting bases. A one-way cylinder is provided on each of the two mounting bases, and the two one-way cylinders are arranged opposite to each other, and an L-shaped push plate is provided at the telescopic end of the one-way cylinder.

[0014] The beneficial effects of the present invention are as follows: the present invention uses the lifting platform and the biaxial moving device on the hot-rolled light rail, and the equipment can be flexibly operated at different positions and heights while maintaining the stability and reliability of the structure. The coordinated use of the elastic platform and the automatic threading component enables the equipment to automatically align and thread the tensioning wire rod on the model, avoiding errors in manual operation and improving construction accuracy. The coordinated use of the tensioning device and the automatic locking component can quickly and accurately apply tensioning force and lock the tensioning nut, ensuring the stability and safety of the prestressed structure. Finally, the addition of the correction component further improves the construction accuracy and efficiency. Compared with the existing technology, it integrates multiple functions such as lifting, biaxial movement, automatic alignment, automatic threading, tensioning and automatic locking, realizing the full automation of the prestressed tensioning process, greatly reducing the labor intensity of the operator, improving work efficiency, and also reducing construction errors caused by human factors, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the longitudinal moving part of the utility model;

[0017] Figure 3 This is a schematic diagram of the automatic threading assembly of the utility model;

[0018] Figure 4 For this utility model Figure 3 A in the middle is an enlarged schematic diagram;

[0019] Figure 5 For this utility model Figure 3 The enlarged schematic diagram of point B in the middle;

[0020] Figure 6 This is a schematic cross-sectional view of the tensioning device, the outer spline sleeve and the inner spline sleeve of the utility model.

[0021] Among them, 1. Hot-rolled light rail; 2. Lifting platform; 21. Lower frame; 22. Pulley; 23. First electric push rod; 24. Upper frame; 25. Guide rod; 26. Guide sleeve; 27. Guide screw; 28. Lock nut; 3. Biaxial moving device; 31. Longitudinal moving part; 311. First stepper motor; 312. Screw; 313. Screw nut seat; 314. Adjustment plate; 32. Horizontal moving part; 321. Second electric push rod; 322. Moving plate; 4. Elastic platform; 41. Lower connecting plate; 42. Column; 43. Upper connecting plate; 44. First spring; 45. Spring sleeve; 46. Second spring; 5. Automatic threading assembly; 51. Frame; 52. Second stepping motor; 53. Box body; 54. Driving gear; 55. Driven gear; 56. External spline sleeve; 57. Internal spline sleeve; 6. Tensioning device; 61. Hydraulic tensioning mechanism; 62. Screw sleeve; 63. Limiting nut sleeve; 64. T-shaped joint; 65. Third spring; 7. Automatic locking assembly; 71. Frame; 72. Hydraulic motor; 73. Torsion body; 8. Correction assembly; 81. Mounting seat; 82. One-way cylinder; 83. L-shaped push plate. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] In the embodiment, Figure 1-6A fully automatic tensioning machine is provided, comprising a hot-rolled light rail 1, a lifting platform 2 is slidably connected to the hot-rolled light rail 1, and the lifting platform 2 can slide along the length direction of the hot-rolled light rail 1, and the lifting end of the lifting platform 2 is provided with a biaxial moving device 3, and the moving end of the biaxial moving device 3 is provided with an elastic platform 4 for automatically aligning the tensioning wire rod on the model, and the elastic platform 4 is provided with an automatic threading component 5 on the side away from the biaxial moving device 3, which is used to quickly connect with the tensioning wire rod on the model, and one side surface of the automatic threading component 5 is provided with a tensioning device 6 for applying tensioning force to the tensioning wire rod on the model, and the other side surface is provided with an automatic locking component 7, the lifting platform 2 slides along the length direction of the hot-rolled light rail 1 to be positioned above the model to which tensioning force is to be applied, ensuring that the equipment can initially reach the working position, and then the lifting of the lifting platform 2 The lowering end adjusts its height according to actual needs so that the biaxial moving device 3 and the elastic platform 4, automatic threading assembly 5, etc. carried by it can smoothly reach the height of the tensioning wire rod on the model. The elastic platform 4 is automatically aligned according to the position of the tensioning wire rod on the model to ensure that the automatic threading assembly 5 can be accurately aligned and quickly connected to the tensioning wire rod on the model. After the automatic threading assembly 5 is successfully connected, the tensioning device 6 begins to apply tensioning force to the tensioning wire rod on the model, tensioning it to a predetermined value and maintaining it for a period of time, which can ensure that the tensioning wire rod on the model reaches the stress state required by the design, and at the same time helps the tensioning wire rod on the model to establish an effective prestressed field, thereby improving the bearing capacity and crack resistance of the structure. After the tensioning force is applied, the automatic locking assembly 7 locks the tensioning nut on the model, realizing the full automation and efficiency of the prestressing process.

[0026] Reference Figure 1-6 , wherein the lifting platform 2 includes a lower frame 21 arranged on the hot-rolled light rail 1, pulleys 22 are provided at the four corners of the lower frame 21, a first electric push rod 23 is provided on the lower frame 21, and an upper frame 24 is provided at the telescopic end of the first electric push rod 23, a guide rod 25 is provided on one side surface of the lower frame 21, and a guide sleeve 26 adapted to the guide rod 25 is provided on one side surface of the upper frame 24, and the guide rod 25 is slidably connected in the guide sleeve 26, a guide screw 27 with one end passing through the upper frame 24 is provided on one side surface of the lower frame 21, and a locking nut 28 is threadedly connected to the guide screw 27;

[0027] Through the above-mentioned structural setting, pulleys 22 are provided at the four corners of the lower frame 21 to facilitate the movement of the platform. The upper frame 24 can be lifted and lowered relative to the lower frame 21 through the telescopic action of the first electric push rod 23. The guide rod 25 is slidably connected to the guide sleeve 26, which plays a guiding and stabilizing role. When the upper frame 24 reaches the specified height, it can be fastened to the appropriate position on the guide screw 27 by locking the locking nut 28, thereby locking the current height of the upper frame 24 and ensuring the stability of the lifting platform during use.

[0028] Reference Figure 1-6 , wherein the biaxial moving device 3 includes a longitudinal moving member 31 and a transverse moving member 32 provided at the moving end of the longitudinal moving member 31;

[0029] Reference Figure 1-6 The longitudinal moving member 31 includes a first stepper motor 311 fixedly mounted on the upper frame 24. The output coupling of the first stepper motor 311 is connected to a screw rod 312. A screw rod nut seat 313 is threadedly connected to the screw rod 312. An adjustment plate 314 is provided on one side surface of the screw rod nut seat 313. The adjustment plate 314 is slidably connected to the upper frame 24.

[0030] With the above-mentioned structural arrangement, when the first stepper motor 311 is started and rotates the screw rod 312 , the screw rod nut seat 313 moves linearly along the screw rod 312 , thereby driving the adjustment plate 314 and the components connected thereto to move longitudinally.

[0031] Reference Figure 1-6 , wherein the transverse moving member 32 includes a second electric push rod 321 fixedly mounted on the surface of the adjustment plate 314, a moving plate 322 is provided at the telescopic end of the second electric push rod 321, the moving plate 322 is slidably connected to the surface of one side of the adjustment plate 314, and the elastic platform 4 is provided on the surface of the moving plate 322;

[0032] With the above-mentioned structural arrangement, the second electric push rod 321 is used to drive the movable plate 322 to move laterally, thereby driving the elastic platform 4 disposed thereon to adjust its position.

[0033] Reference Figure 1-6 , wherein the elastic platform 4 includes a lower connecting plate 41, which is arranged on one side surface of the movable plate 322, and a column 42 is provided at each of the four corners of the top of the lower connecting plate 41, and an upper connecting plate 43 is provided at the other end of the column 42. A first spring 44 is provided between the lower connecting plate 41 and the upper connecting plate 43 and is sleeved on the outer side of the column 42. A plurality of spring sleeves 45 are provided on the surface of the opposite side of the lower connecting plate 41 and the upper connecting plate 43, and a second spring 46 is provided between two adjacent spring sleeves 45;

[0034] Through the above-mentioned structural setting, the lower connecting plate 41 is fixedly set on one side surface of the movable plate 322 as the supporting base of the elastic platform. The columns 42 are set at the top four corners of the lower connecting plate 41. They extend vertically upward and are connected to the upper connecting plate 43, together forming the main frame of the elastic platform. The first spring 44 is set on the outside of the column 42, located between the lower connecting plate 41 and the upper connecting plate 43, and plays a major elastic support role. When there is a certain deviation before the tensioning rod on the model enters the automatic threading assembly 5, the first spring 44 and the second spring 46 cooperate with each other to enable the tensioning rod on the model to smoothly enter the automatic threading assembly 5.

[0035] Reference Figure 1-6 , wherein the automatic threading assembly 5 includes a frame 51 with an opening on one side, the frame 51 is arranged on a side surface of the upper connecting plate 43, and a second stepping motor 52 and a box body 53 are respectively installed on the frame 51 through two elastic members, the output end of the second stepping motor 52 is rotatably connected to a driving gear 54 through a cross coupling, and the driving gear 54 is rotatably connected to the box body 53, and a driven gear 55 meshing with the driving gear 54 is rotatably connected to the box body 53, and an external spline sleeve 56 is rotatably connected to the driven gear 55, and an internal spline sleeve 57 is clamped on the inner side of the external spline sleeve 56;

[0036] Through the above-mentioned structural setting, the second stepper motor 52 is installed on the frame 51 through an elastic member, which not only ensures the stability of the motor, but also allows it to be fine-tuned to a certain extent to adapt to different working requirements. The second stepper motor 52 drives the driving gear 54 to rotate, and at the same time drives the driven gear 55 and the external spline sleeve 56 to rotate synchronously. The inner side of the external spline sleeve 56 is provided with a plurality of protrusions distributed in an annular shape and at equal intervals, and the outer side of the internal spline sleeve 57 is provided with grooves adapted to the protrusions. Therefore, when the external spline sleeve 56 rotates, it can drive the internal spline sleeve 57 to rotate synchronously, so it can be threadedly connected to one end of the tensioning rod on the model.

[0037] Reference Figure 1-6 , wherein the tensioning device 6 includes a hydraulic tensioning mechanism 61 provided on the elastic platform 4, one end of the tensioning screw on the hydraulic tensioning mechanism 61 is threadedly connected to a screw sleeve 62, the other end of the screw sleeve 62 is threadedly connected to a limit screw nut sleeve 63, a T-shaped joint 64 is slidably connected in the limit screw nut sleeve 63, one end of the T-shaped joint 64 is fixedly connected to one end of the internal spline sleeve 57, and a third spring 65 located in the screw sleeve 62 is provided between the other end and the tensioning screw;

[0038] Through the above-mentioned structural setting, after the tensioning screw on the model enters the distance of one end of the internal spline sleeve 57, the hydraulic tensioning mechanism 61 is started, and the hydraulic tensioning mechanism 61 adopts existing technology and can be purchased directly from the market, so it is not repeated. The hydraulic tensioning mechanism 61 drives the tensioning screw to apply tensioning force to the screw sleeve 62. The screw sleeve 62 plays an intermediary role. The other end is connected to a limiting nut sleeve 63 through a thread. The T-shaped joint 64 is slidably connected to the limiting nut sleeve 63 and has a certain degree of freedom. One end of the T-shaped joint 64 is fixedly connected to one end of the internal spline sleeve 57. When the T-shaped joint 64 moves, the internal spline sleeve 57 will also move accordingly, thereby applying tensioning force to the tensioning screw on the model.

[0039] Reference Figure 1-6 The automatic locking assembly 7 includes a frame 71, which is mounted on the frame body 51 via an elastic member. A hydraulic motor 72 is fixedly mounted on the frame 71. A torsion body 73 for locking the tension nut on the model is rotatably connected to the frame 71, and the hydraulic motor 72 and the torsion body 73 are connected via a gear transmission mechanism.

[0040] With the above-mentioned structural arrangement, after the tensioning of the tensioning wire rod on the model is completed, the hydraulic motor 72 drives the torsion body 73 to rotate through the gear transmission mechanism, thereby applying a locking force to the tensioning nut.

[0041] Reference Figure 1-6 , which includes a correction component 8, the correction component 8 includes a mounting base 81 fixedly mounted on the surface of the adjustment plate 314, and the number of the mounting base 81 is two, and a one-way cylinder 82 is provided on each of the two mounting bases 81, and the two one-way cylinders 82 are arranged opposite to each other, and the telescopic end of the one-way cylinder 82 is provided with an L-shaped push plate 83.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic tensioning machine, comprising a hot-rolled light rail (1), characterized in that: The hot-rolled light rail (1) is slidably connected to a lifting platform (2), and the lifting platform (2) can slide along the length direction of the hot-rolled light rail (1); a lifting end of the lifting platform (2) is provided with a biaxial moving device (3); a moving end of the biaxial moving device (3) is provided with an elastic platform (4) for automatically aligning a tensioning wire rod on a model; and an automatic threading assembly (5) is provided on a surface of the elastic platform (4) away from the biaxial moving device (3), which is used for quickly connecting with the tensioning wire rod on the model; a tensioning device (6) for applying tensioning force to the tensioning wire rod on the model is provided on one surface of the automatic threading assembly (5), and an automatic locking assembly (7) is provided on the other surface.

2. A fully automatic tensioning machine according to claim 1, characterized in that: The lifting platform (2) includes a lower frame (21) arranged on the hot-rolled light rail (1), pulleys (22) are arranged at the four corners of the lower frame (21), a first electric push rod (23) is arranged on the lower frame (21), and an upper frame (24) is arranged at the telescopic end of the first electric push rod (23), a guide rod (25) is arranged on one side surface of the lower frame (21), and a guide sleeve (26) adapted to the guide rod (25) is arranged on one side surface of the upper frame (24), and the guide rod (25) is slidably connected to the guide sleeve (26), a guide screw (27) with one end penetrating the upper frame (24) is arranged on one side surface of the lower frame (21), and a locking nut (28) is threadedly connected to the guide screw (27).

3. The fully automatic tensioning machine according to claim 1, characterized in that: The biaxial moving device (3) comprises a longitudinal moving member (31) and a transverse moving member (32) arranged at the moving end of the longitudinal moving member (31).

4. A fully automatic tensioning machine according to claim 3, characterized in that: The longitudinal moving member (31) comprises a first stepper motor (311) fixedly mounted on the upper frame (24); a coupling at the output end of the first stepper motor (311) is connected to a screw rod (312); a screw rod nut seat (313) is threadedly connected to the screw rod (312); and an adjustment plate (314) is provided on one side surface of the screw rod nut seat (313); and the adjustment plate (314) is slidably connected to the upper frame (24).

5. The fully automatic tensioning machine according to claim 4, characterized in that: The transverse moving member (32) comprises a second electric push rod (321) fixedly mounted on the surface of the adjustment plate (314); a moving plate (322) is provided at the telescopic end of the second electric push rod (321); the moving plate (322) is slidably connected to a side surface of the adjustment plate (314); and an elastic platform (4) is provided on the surface of the moving plate (322).

6. The fully automatic tensioning machine according to claim 5, characterized in that: The elastic platform (4) comprises a lower connecting plate (41), which is arranged on a side surface of the movable plate (322), and a column (42) is provided at each of the four corners of the top of the lower connecting plate (41). An upper connecting plate (43) is provided at the other end of the column (42). A first spring (44) is provided between the lower connecting plate (41) and the upper connecting plate (43) and is sleeved on the outside of the column (42). A plurality of spring sleeves (45) are provided on the surface of the side opposite to the lower connecting plate (41) and the upper connecting plate (43), and a second spring (46) is provided between two adjacent spring sleeves (45).

7. The fully automatic tensioning machine according to claim 6, characterized in that: The automatic threading assembly (5) comprises a frame (51) with an opening at one side, the frame (51) being arranged on a side surface of an upper connecting plate (43), a second stepping motor (52) and a box (53) being respectively mounted on the frame (51) via two elastic members, an output end of the second stepping motor (52) being rotationally connected to a driving gear (54) via a cross coupling, and the driving gear (54) being rotationally connected to the box (53), a driven gear (55) meshing with the driving gear (54) being rotationally connected to the box (53), an external spline sleeve (56) being rotationally connected to the driven gear (55), and an internal spline sleeve (57) being clamped on the inner side of the external spline sleeve (56).

8. The fully automatic tensioning machine according to claim 7, characterized in that: The tensioning device (6) includes a hydraulic tensioning mechanism (61) arranged on the elastic platform (4), one end of the tensioning screw rod on the hydraulic tensioning mechanism (61) is threadedly connected to a screw rod sleeve (62), the other end of the screw rod sleeve (62) is threadedly connected to a limiting screw nut sleeve (63), and a T-shaped joint (64) arranged in a through-going manner is slidably connected in the limiting screw nut sleeve (63), one end of the T-shaped joint (64) is fixedly connected to one end of the internal spline sleeve (57), and a third spring (65) located in the screw rod sleeve (62) is arranged between the other end and the tensioning screw rod.

9. The fully automatic tensioning machine according to claim 7, characterized in that: The automatic locking assembly (7) comprises a frame (71), the frame (71) is mounted on the frame body (51) via an elastic member, a hydraulic motor (72) is fixedly mounted on the frame (71), a torsion body (73) for locking a tension nut on a model is rotatably connected to the frame (71), and the hydraulic motor (72) and the torsion body (73) are connected via a gear transmission mechanism.

10. The fully automatic tensioning machine according to claim 5, characterized in that: The invention comprises a deviation correction component (8), wherein the deviation correction component (8) comprises a mounting seat (81) fixedly mounted on the surface of the adjustment plate (314), and the number of the mounting seats (81) is two, and a one-way cylinder (82) is provided on each of the two mounting seats (81), and the two one-way cylinders (82) are arranged opposite to each other, and an L-shaped push plate (83) is provided at the telescopic end of the one-way cylinder (82).

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