Device for tensioning inclined web vertical finish rolling deformed steel bar

Abstract

The utility model relates to the technical field of bridge engineering, in particular to an inclined web vertical finish rolling deformed steel bar tensioning device which comprises a pedestal, an upper top plate is fixedly connected to the pedestal, an inclined upper base plate is rotatably connected to the upper top plate, a first round hole is formed in the inclined upper base plate, and a second round hole used in cooperation with the first round hole is formed in the upper top plate. An included angle exists between the inclined upper base plate and the upper top plate, a limiting assembly used for preventing the inclined upper base plate from rotating is arranged on the upper top plate, and a supporting structure used for supporting the inclined upper base plate is arranged between the inclined upper base plate and the upper top plate. By adjusting the included angle between the inclined upper base plate and the upper top plate, tensioning of different bridge inclined webs is achieved, the application range of the device is widened, and convenience of the device is improved.

Description

Technical Field

[0001] This application relates to the technical field of bridge engineering, and particularly to a device for tensioning vertical precision rolled thread steel of inclined webs. Background Art

[0002] The cast-in-place box girder web is a concrete structure and is one of the important components commonly used in bridge engineering. In bridge engineering, in order to reduce and control the principal tensile stress of the box girder web and prevent the web concrete from cracking, setting vertical prestressing tendons in the box girder web has become one of the important design contents. Using precision rolled thread steel as the vertical prestressing tendon of the concrete box girder web has the advantages of unrestricted connection by welding, convenient anchoring, simple construction, high strength, and good relaxation performance.

[0003] The tensioning of the precision rolled thread steel of the box girder is a key link to ensure the project quality. Therefore, before the tensioning of the precision rolled thread steel of the box girder, it is necessary to select a suitable tensioning device and adjust the tension of the device according to the design requirements.

[0004] At present, the tensioning devices on the market are vertical precision rolled thread steel tensioning benches. When in use, they are only suitable for the tensioning of straight webs of bridges or the tensioning of single inclined webs of bridges, and cannot be adapted to the tensioning of different inclined webs of bridges, resulting in a limited scope of use of the entire tensioning device. Summary of the Utility Model

[0005] In order to solve the problem that the existing tensioning device has a limited scope of use itself and cannot be adapted to the tensioning of different inclined webs of bridges, this application provides a device for tensioning vertical precision rolled thread steel of inclined webs.

[0006] A device for tensioning vertical precision rolled thread steel of inclined webs provided by this application adopts the following technical solutions:[[]]

[0007] A device for tensioning vertical precision rolled thread steel of inclined webs includes a bench, on which an upper top plate is fixedly connected. An inclined upper backing plate is rotatably connected to the upper top plate. A first round hole for passing through the precision rolled thread steel is opened on the inclined upper backing plate, and a second round hole for cooperating with the first round hole is opened on the upper top plate. There is an included angle between the inclined upper backing plate and the upper top plate, and a limiting component for preventing the inclined upper backing plate from rotating is provided on the upper top plate. A support structure for supporting the inclined upper backing plate is provided between the inclined upper backing plate and the upper top plate.

[0008] By adopting the above technical solution, during use, first fix the pedestal, and then rotate the inclined upper backing plate to change the included angle between the inclined upper backing plate and the upper top plate until the vertical prestressed tendon can pass through the second round hole and the first round hole in sequence. Then, the inclination angle of the inclined upper backing plate can be fixed through the limiting component. After that, support for the inclined upper backing plate is provided through the support structure. Then, install the jack, connector, and backing plate on the inclined upper backing plate, and the tensioning of the vertical prestressed tendon of the inclined web can be achieved. At the same time, the inclination angle of the inclined upper backing plate can be adjusted to adapt to different inclined webs of bridges for tensioning, improving the overall application range of the tensioning device.

[0009] Preferably, the limiting component includes a connecting shaft key-connected to one end of the upper top plate and an abutting bolt threadedly connected to the connecting shaft. One end of the inclined upper backing plate is rotatably connected to the connecting shaft, and the abutting bolt abuts against the side wall of the inclined upper backing plate.

[0010] By adopting the above technical solution, during use, the connecting shaft and the upper top plate are key-connected, which can prevent relative rotation between the connecting shaft and the upper top plate. By screwing the abutting bolt, the abutting bolt is tightened against the side wall of the inclined upper backing plate, so as to position the inclined upper backing plate through the friction force between the abutting bolt and the side wall of the inclined upper backing plate. The use is simple and convenient.

[0011] Preferably, the support structure includes a diagonal support plate arranged between the inclined upper backing plate and the upper top plate. One end of the diagonal support plate abuts against the inclined upper backing plate, and the other end of the diagonal support plate abuts against the upper top plate.

[0012] By adopting the above technical solution, during use, the diagonal support plate supports one end of the inclined upper backing plate away from the upper top plate to ensure the stability of the inclined upper backing plate during the tensioning of the inclined web of the bridge. At the same time, the whole diagonal support plate is movable, which is convenient for adapting to inclined upper backing plates with different inclination angles.

[0013] Preferably, the pedestal includes a lower top plate and two lower web plates fixed on the lower top plate. The two lower web plates are arranged oppositely, and an avoidance groove is formed between the two lower web plates and the lower top plate. An avoidance hole is formed on the lower top plate, and the avoidance hole communicates the avoidance groove and the second round hole.

[0014] By adopting the above technical solution, during use, the lower top plate is supported by the two lower web plates, the upper top plate and the inclined upper backing plate are arranged on the lower top plate, and the nut of the precision rolled thread steel can be conveniently adjusted by the avoidance groove between the two lower web plates, that is, it is convenient for the connection between the precision rolled thread steel of the box girder and the precision rolled thread steel for work.

[0015] Preferably, a lower backing plate is fixed at one end of the lower web plate away from the lower top plate, and the width of the lower backing plate is greater than the width of the end of the lower web plate.

[0016] By adopting the above technical solution, during use, the contact area between the lower abdominal plate and the bridge deck is increased through the lower backing plate, thereby increasing the stress area between the lower abdominal plate and the bridge deck, and reducing the damage of the lower abdominal plate to the bridge deck concrete during the tensioning of the high-strength threaded steel.

[0017] Preferably, a buffer layer is provided on the lower backing plate.

[0018] By adopting the above technical solution, during use, by providing a buffer layer, a buffer is provided between the lower abdominal plate and the bridge deck, further reducing the pressure damage of the lower abdominal plate to the bridge deck concrete.

[0019] Preferably, the support structure includes a sliding seat sliding on the upper top plate, a support rod fixed on the sliding seat, and a positioning component provided on the sliding seat for positioning the sliding seat.

[0020] By adopting the above technical solution, by providing a sliding seat, it is convenient for the user to move the support rod. The support rod forms a support for the inclined upper backing plate, and the positioning component positions the sliding seat after movement, thereby ensuring the support stability of the support rod for the inclined upper backing plate.

[0021] Preferably, the positioning component includes a pin inserted through the sliding seat, an abutting plate fixed on the pin, and a spring sleeved on the pin. One end of the pin is located above the sliding seat, and the other end of the pin passes through the sliding seat and abuts against the upper top plate. The spring is located between the abutting plate and the sliding seat. One end of the spring abuts against the sliding seat, and the other end of the spring abuts against the abutting plate.

[0022] By adopting the above technical solution, during use, the pin is limited by the elastic force of the spring to ensure that the bottom end of the pin abuts tightly against the upper top plate without external force. When the support rod needs to be moved, the user only needs to pull the pin so that the bottom end of the pin disengages from the upper top plate, and the overall use is simple and convenient.

[0023] Preferably, an abutting inclined surface is provided at one end of the support rod away from the sliding seat, a first magnet is provided on the abutting inclined surface, and a second magnet is provided on the inclined upper backing plate for cooperating with the first magnet.

[0024] By adopting the above technical solution, during use, through the magnetic adsorption effect of the first magnet and the second magnet, the inclined upper backing plate is prevented from detaching from the support rod, thereby increasing the stability after the fixed angle of the inclined upper backing plate is increased.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. During use, the angle between the inclined upper backing plate and the upper top plate is adjusted by rotating the inclined upper backing plate, and then the angle of the rotated inclined upper backing plate is fixed by the limiting component. At the same time, the supporting structure is used to ensure the stability of the inclined upper backing plate after the fixed angle, so as to realize the tensioning of the vertical precision rolled threaded steel of the inclined web of different bridges, improve the application range of the overall device, and ensure the stability of the tensioning process;

[0027] 2. During use, by setting the lower backing plate and the buffer layer, the contact area between the lower web and the bridge deck concrete is increased, so as to increase the stress area between the lower web and the bridge deck concrete, thereby reducing the pressure damage of the web to the bridge deck concrete during the tensioning process;

[0028] 3. During use, the moving direction of the support rod is limited by the sliding seat, and the sliding seat after sliding is positioned by the positioning component, so as to realize effective support for the inclined upper backing plates with different inclination angles. At the same time, in cooperation with the first magnet and the second magnet, the stability of the inclined upper backing plate after the fixed angle is increased. Brief Description of the Drawings

[0029] Figure 1 is an axonometric schematic diagram mainly showing the overall structure in Embodiment 1 of the present application;

[0030] Figure 2 is a sectional view mainly showing the overall structure in Embodiment 1 of the present application;

[0031] Figure 3 is an axonometric schematic diagram mainly showing the structure of the limiting component in Embodiment 1 of the present application;

[0032] Figure 4 is an axonometric schematic diagram mainly showing the overall structure in Embodiment 2 of the present application;

[0033] Figure 5 is an exploded view mainly showing the support structure in Embodiment 2 of the present application.

[0034] Reference Numerals: 1, pedestal; 11, upper top plate; 12, lower web; 13, avoidance groove; 14, avoidance hole; 2, upper top plate; 21, second round hole; 3, inclined upper backing plate; 31, first round hole; 4, limiting component; 41, connecting shaft; 42, abutting bolt; 5, support structure; 51, inclined support plate; 52, sliding seat; 53, support rod; 6, lower backing plate; 7, buffer layer; 8, positioning component; 81, pin; 82, abutting plate; 83, spring; 9, abutting inclined surface. Detailed Description of the Embodiment

[0035] The following is a further detailed description of the present application in combination with the attached Figure 1 - attached Figure 5 drawings.

[0036] An embodiment of the present application discloses a device for tensioning vertical precision rolled threaded steel of an inclined web.

[0037] Embodiment 1:

[0038] Referring to Figure 1 and Figure 2 , a device for tensioning vertical precision rolled threaded steel of an inclined web includes a horizontally placed pedestal 1. The pedestal 1 is composed of a lower top plate 11 and two lower web plates 12. The lower web plates 12 are located below the lower top plate 11, and the top ends of the lower web plates 12 are welded and fixed to the bottom surface of the lower top plate 11. The two lower web plates 12 are arranged oppositely, and the two lower web plates 12 are respectively located at both ends in the width direction of the lower top plate 11. An avoidance groove 13 is formed between the two lower web plates 12 and one lower top plate 11. During use, the overall structure of the pedestal 1 is simple and convenient for handling. At the same time, the avoidance groove 13 formed below the lower top plate 11 is convenient for the user to adjust the nut of the precision rolled threaded steel.

[0039] Referring to Figure 1 and Figure 2 , an upper top plate 2 is fixedly connected to the lower top plate 11 by bolts. The right end of the upper top plate 2 is rotatably connected with an inclined upper backing plate 3. The inclined upper backing plate 3 is inclined above the upper top plate 2, that is, there is an included angle between the inclined upper backing plate 3 and the upper top plate 2. A first round hole 31 is opened on the inclined upper backing plate 3, a second round hole 21 is opened on the upper top plate 2, and an avoidance hole 14 is opened on the lower top plate 11. The avoidance hole 14 is communicated with the second round hole 21, and the apertures of the avoidance hole 14 and the second round hole 21 are both larger than the first round hole 31. A limiting component 4 is arranged on the upper top plate 2, and the limiting component 4 is used to position the rotated inclined upper backing plate 3.

[0040] Referring to Figure 1 and Figure 2 , during use, by adjusting the included angle between the inclined upper backing plate 3 and the upper top plate 2, the center of the first round hole 31 is aligned with the center of the vertical precision rolled threaded steel on the inclined web, so as to realize the tensioning of the vertical precision rolled threaded steel on the inclined webs of different bridges, improving the application range of the device. After the inclination angle of the inclined upper backing plate 3 is adjusted, the inclined upper backing plate 3 is positioned by the limiting component 4, so as to ensure the stability of the inclined upper backing plate 3 during the subsequent tensioning process.

[0041] Referring to Figure 1 and Figure 3The limiting assembly 4 includes a connecting shaft 41 and an abutment bolt 42. The connecting shaft 41 is inserted into the right end of the upper top plate 2, and the connecting shaft 41 is key-connected to the upper top plate 2. The two ends of the connecting shaft 41 are respectively located on one side of the upper top plate 2, and the inclined upper pad 3 is rotatably connected to the connecting shaft 41. Two abutment bolts 42 are provided, and the two abutment bolts 42 are respectively threadedly connected to one end of the connecting shaft 41; when in use, one end of the connecting shaft 41 is passed through one end of the inclined upper pad 3, the upper top plate 2, and the other end of the inclined upper pad 3 in sequence, and then the abutment bolt 42 is screwed on the end of the connecting shaft 41 so that the two abutment bolts 42 are respectively abutted on the side wall of one side of the inclined upper pad 3, thereby realizing the assembly of the inclined upper pad 3 and the upper top plate 2.

[0042] Reference Figure 1 and Figure 3 By connecting the connecting shaft 41 and the upper top plate 2 with a key, on the one hand, relative rotation between the upper top plate 2 and the connecting shaft 41 is avoided, and on the other hand, it is convenient for users to install and disassemble; at the same time, when the inclined upper pad 3 is rotated to a certain angle, the two abutment bolts 42 can be screwed so that the abutment bolts 42 are pressed against the side wall of the inclined upper pad 3, thereby positioning the inclined upper pad 3 by the friction between the abutment bolts 42 and the inclined upper pad 3.

[0043] Reference Figure 1 When the vertical fine-rolled threaded steel bars on the inclined web of the bridge are tensioned, in order to increase the stability of the inclined upper pad 3, a supporting structure 5 is further provided between the inclined upper pad 3 and the upper top plate 2. The supporting structure 5 is used to support the inclined upper pad 3. The supporting structure 5 includes an inclined support plate 51. The inclined support plate 51 is arranged as a whole at an angle between the inclined upper pad 3 and the upper top plate 2. The bottom end of the inclined support plate 51 abuts against the upper end surface of the upper top plate 2, and the top end of the inclined support plate 51 abuts against the bottom surface of the inclined upper pad 3. When in use, the inclined support plate 51, the upper top plate 2 and the inclined upper pad 3 together form a triangle shape.

[0044] Reference Figure 1 During the tensioning process, the inclined upper pad 3 will exert a downward and leftward force on the inclined support plate 51, wherein the leftward force is overcome by the friction force at the upper and lower ends of the inclined support plate 51. Therefore, in this embodiment, the upper and lower ends of the inclined support plate 51, the lower end surface of the inclined upper pad 3, and the upper end surface of the upper top plate 2 can all be set to rough surfaces with a higher friction coefficient.

[0045] Reference Figure 1, a lower backing plate 6 is fixedly welded to the bottom end of the lower web plate 12. In this embodiment, the lower backing plate 6 is preferably provided with two, and the two lower backing plates 6 are respectively located at both ends of the lower web plate 12 in the length direction. During use, the contact area between the lower web plate 12 and the bridge concrete is increased through the lower backing plate 6, so as to increase the stress area between the lower web plate 12 and the bridge deck concrete. Furthermore, during the tensioning process, the pressure of the lower web plate 12 on the bridge deck concrete is prevented from being too concentrated, resulting in pressure damage to the bridge deck concrete.

[0046] Refer to Figure 1 , in addition, in order to further protect the bridge deck, a buffer layer 7 is further provided on the bottom surface of the lower backing plate 6. In this embodiment, the buffer layer 7 is preferably a soft rubber pad, and the rubber pad is sleeved on the lower backing plate 6. During use, a buffer force is provided between the lower backing plate 6 and the bridge deck concrete through the rubber pad, and combined with the lower backing plate 6 itself, the situation of cracking the box girder concrete during the tensioning process can be effectively reduced.

[0047] Refer to Figure 1 , in order to ensure the volume and weight of the overall device, in this embodiment, the lower backing plate 6, the lower top plate 11, the lower web plate 12, the upper top plate 2, the inclined upper backing plate 3 and the inclined support plate 51 are all made of Q235 steel plates with a thickness of 20 mm, the connecting shaft 41 is made of a steel bar with a cross-sectional diameter of 5 mm, and the buffer layer 7 is made of a rubber pad with a thickness of 2 cm. The overall device processed in this way is light and small in volume, convenient to move, and more convenient to use.

[0048] The implementation principle of the embodiment of this application is: during use, place the pedestal 1 at the designated position so that the high-strength steel bars in the box girder are located in the avoidance groove 13 directly below the pedestal 1, and then adjust the inclination angle of the inclined upper backing plate 3 until the center of the first round hole 31 on the inclined upper backing plate 3 aligns with the center of the vertical high-strength steel bar on the inclined web plate, and then the inclination angle of the inclined upper backing plate 3 can be fixed by screwing the abutting bolt 42. Then, insert the inclined support plate 51 between the inclined upper backing plate 3 and the upper top plate 2. After that, one end of the high-strength steel bar for work can be inserted into the avoidance groove 13 through the first round hole 31, the second round hole 21 and the avoidance hole 14 in sequence, and connected to the high-strength steel bars in the box girder through nuts. Finally, install the jack, the connector and the backing plate on the inclined upper backing plate 3, and then tension the high-strength steel bar for work through the jack to achieve the effect of tensioning the high-strength steel bars in the box girder; after the tensioning is completed, anchor the high-strength steel bars in the box girder, and remove the jack and the high-strength steel bar for work. After that, the device can be recycled, and the overall use is simple and convenient.

[0049] The difference between Embodiment 2 and Embodiment 1 is that:

[0050] Refer to Figure 4 and Figure 5, two sets of support structures 5 can be provided, and the two sets of support structures 5 are respectively located at both ends of the upper top plate 2 in the width direction. The support structure 5 includes a sliding seat 52 and a support rod 53. A sliding groove is formed on the upper top plate 2. A part of the sliding seat 52 slides in the sliding groove, and the other part of the sliding seat 52 is located outside the sliding groove. The bottom end of the support rod 53 is welded and fixed to the sliding seat 52, and an abutting inclined surface 9 is integrally formed at the top end of the support rod 53. The abutting inclined surface 9 is used to abut against the bottom surface of the inclined upper cushion plate 3.

[0051] Refer to Figure 4 and Figure 5 , a positioning component 8 is arranged on the sliding seat 52. The positioning component 8 is used to position the sliding seat 52. The positioning component 8 includes a pin 81, an abutting plate 82 and a spring 83. The pin 81 penetrates through the sliding seat 52, and the top end of the pin 81 is located above the sliding seat 52. The base of the pin 81 abuts against the upper top plate 2 after passing through the sliding seat 52. The abutting plate 82 is integrally formed on the pin 81, and the abutting plate 82 is located between the sliding seat 52 and the upper top plate 2. The spring 83 is sleeved on the pin 81. The spring 83 is located between the abutting plate 82 and the sliding seat 52, and one end of the spring 83 abuts against the sliding seat 52, and the other end of the spring 83 abuts against the abutting plate 82.

[0052] Refer to Figure 4 and Figure 5 , during use, when there is no other external force except gravity, the spring 83 is in a compressed state. At this time, under the elastic force of the spring 83, the bottom end of the pin 81 abuts tightly against the upper top plate 2. When it is necessary to move the sliding seat 52, the user can pull up the pin 81, so that the bottom end of the pin 81 is separated from the upper top plate 2, and then the position of the support rod 53 can be adjusted.

[0053] Refer to Figure 4 and Figure 5 , a first magnet is embedded on the abutting inclined surface 9 of the support rod 53, and a second magnet is arranged on the bottom surface of the inclined upper cushion plate 3. The second magnet is strip-shaped, and the length direction of the second magnet is parallel to the length direction of the inclined upper cushion plate 3. The second magnet and the first magnet can be magnetically adsorbed; during use, by sliding the support rod 53, the first magnet is adsorbed on the second magnet, so as to increase the stability of the inclined upper cushion plate 3 at a fixed angle, thereby facilitating subsequent tensioning.

[0054] The implementation principle of the embodiment of this application is as follows: When in use, place the pedestal 1 at the designated position, then adjust the inclination angle of the inclined upper backing plate 3 so that the center of the first round hole 31 on the inclined upper backing plate 3 aligns with the center of the vertical rolled thread steel on the inclined web. Then, fix the inclination angle of the inclined upper backing plate 3 by screwing the abutting bolt 42. Then, pull the bolt pin 81 and slide the support rod 53 until the top of the support rod 53 abuts against the bottom surface of the inclined upper backing plate 3, and then release the bolt pin 81 to position the support rod 53. After that, one end of the rolled thread steel for work can be inserted into the avoidance groove 13 after passing through the first round hole 31, the second round hole 21, and the avoidance hole 14 in sequence, and connected to the rolled thread steel in the box girder through a nut. Finally, install the jack, the connector, and the backing plate on the inclined upper backing plate 3, and then tension the rolled thread steel for work through the jack to achieve the effect of tensioning the rolled thread steel in the box girder; after the tensioning is completed, anchor the rolled thread steel in the box girder, and remove the jack and the rolled thread steel for work. After that, the device can be recycled. The overall use is simple and convenient. At the same time, during the tensioning process, the fixing stability of the inclined upper backing plate 3 is ensured.

[0055] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A device for tensioning vertical high-strength deformed steel bars with inclined webs, characterized in that: It includes a pedestal (1), on which an upper top plate (2) is fixedly connected. A slanting upper cushion plate (3) is rotatably connected to the upper top plate (2). A first round hole (31) for passing through a precision rolled threaded steel is formed on the slanting upper cushion plate (3). A second round hole (21) for cooperating with the first round hole (31) is formed on the upper top plate (2). An included angle exists between the slanting upper cushion plate (3) and the upper top plate (2), and a limiting component (4) for preventing the slanting upper cushion plate (3) from rotating is arranged on the upper top plate (2). A supporting structure (5) for supporting the slanting upper cushion plate (3) is arranged between the slanting upper cushion plate (3) and the upper top plate (2).

2. The device for tensioning the vertical rolled thread steel with inclined webs according to claim 1, characterized in that: The limiting component (4) includes a connecting shaft (41) key-connected to one end of the upper top plate (2) and an abutting bolt (42) threadedly connected to the connecting shaft (41). One end of the slanting upper cushion plate (3) is rotatably connected to the connecting shaft (41), and the abutting bolt (42) abuts against the side wall of the slanting upper cushion plate (3).

3. The device for tensioning the vertical rolled thread steel with inclined web according to claim 1, characterized in that: The supporting structure (5) includes a slanting support plate (51) arranged between the slanting upper cushion plate (3) and the upper top plate (2). One end of the slanting support plate (51) abuts against the slanting upper cushion plate (3), and the other end of the slanting support plate (51) abuts against the upper top plate (2). An included angle exists between the slanting support plate (51) and the upper top plate (2).

4. A device for tensioning vertical high-strength deformed steel bars with inclined webs according to claim 1, characterized in that: The pedestal (1) includes a lower top plate (11) and two lower abdominal plates (12) fixed on the lower top plate (11). The two lower abdominal plates (12) are arranged oppositely. An avoidance groove (13) is formed between the two lower abdominal plates (12) and the lower top plate (11). An avoidance hole (14) is formed on the lower top plate (11), and the avoidance hole (14) communicates with the avoidance groove (13) and the second round hole (21).

5. The device for tensioning the vertical rolled thread steel with inclined webs according to claim 4, characterized in that: A lower cushion plate (6) is fixed at one end of the lower abdominal plate (12) away from the lower top plate (11), and the width of the lower cushion plate (6) is greater than the width of the end of the lower abdominal plate (12).

6. The device for tensioning the vertical fine-rolled threaded steel with inclined webs according to claim 5, characterized in that: A buffer layer (7) is arranged on the lower cushion plate (6).

7. The device for tensioning the vertical rolled thread steel with inclined web according to claim 1, characterized in that: The supporting structure (5) includes a sliding seat (52) sliding on the upper top plate (2) and a supporting rod (53) fixed on the sliding seat (52). A positioning component (8) for positioning the sliding seat (52) is arranged on the sliding seat (52).

8. The device for tensioning the vertical high-strength deformed steel bar with inclined web according to claim 7, wherein: The positioning component (8) includes a pin (81) passing through the sliding seat (52), a butt plate (82) fixed on the pin (81), and a spring (83) sleeved on the pin (81). One end of the pin (81) is located above the sliding seat (52), and the other end of the pin (81) passes through the sliding seat (52) and abuts against the upper top plate (2). The spring (83) is located between the butt plate (82) and the sliding seat (52). One end of the spring (83) abuts against the sliding seat (52), and the other end of the spring (83) abuts against the butt plate (82).

9. The device for tensioning the vertical high-strength deformed steel bar with inclined web according to claim 7, wherein: One end of the support rod (53) away from the sliding seat (52) is provided with an abutting inclined surface (9), a first magnet is arranged on the abutting inclined surface (9), and a second magnet for cooperating with the first magnet is arranged on the inclined upper backing plate (3).

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