High-efficiency prestressed adjustable municipal bridge construction device and method

Abstract

The application belongs to the technical field of bridge construction, and particularly relates to an efficient prestress adjustable municipal bridge construction device and method, which comprises a fixed base, two first installation plates are fixedly installed on the two sides of the fixed base, two first installation holes are formed in each of the first installation plates; further comprises a fixed stretching part and a moving stretching part, the fixed stretching part is fixedly arranged on the top of the fixed base, and the moving stretching part is slidingly arranged on the top of the fixed base; in the application, the municipal bridge construction device adopts modular design and has a simple and clear structure; by adjusting the lengths of the fixed stretching part and the moving stretching part, the device can flexibly adapt to the stretching requirements of different numbers of steels, and efficient and accurate prestress stretching is realized.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a high-efficiency prestressed adjustable municipal bridge construction device and method. Background Technology

[0002] In the construction of municipal bridges, the application of prestressed technology is crucial for ensuring the stability and safety of bridge structures. As an important component of prestressed technology, the quality and efficiency of prestressed steel reinforcement directly affect the overall performance of the bridge.

[0003] Traditional prestressed steel bar tensioning devices are complex in structure and cumbersome to operate, increasing construction difficulty and reducing efficiency. Furthermore, they are difficult to control precisely, thus affecting the tensioning effect of the prestressed steel bars. At the same time, these devices often lack flexibility, making it inconvenient to adapt them to the quantity of steel bars to be tensioned. In actual construction, due to differences in bridge structures and design requirements, as well as variations in construction locations, the number of steel bars required to be tensioned may vary, and traditional tensioning devices often cannot quickly and accurately adapt to these changes.

[0004] To address the aforementioned problems, this invention proposes a highly efficient prestressed adjustable municipal bridge construction device and method. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the complex structure, cumbersome operation, and inconvenience in adapting and adjusting the traditional prestressed steel bar tensioning device according to the quantity of steel bars to be tensioned. Therefore, this invention proposes a highly efficient prestressed adjustable municipal bridge construction device and method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency prestressed adjustable municipal bridge construction device, comprising: A fixed base, wherein two first mounting plates are fixedly installed on both sides of the fixed base, and two first mounting holes are opened in each of the multiple first mounting plates for installing the fixed base; It also includes a fixed tensioning part and a movable tensioning part. The fixed tensioning part is fixedly disposed on the top of the fixed base, and the movable tensioning part is slidably disposed on the top of the fixed base. The fixed tensioning part consists of a first tensioning base and a first extension seat, with the first extension seat slidably disposed inside the first tensioning base. The movable tensioning part consists of a second tensioning base and a second extension seat, with the second extension seat slidably disposed inside the second tensioning base. Both the first and second tensioning bases have multiple first through holes, and both the first and second extension seats have multiple second through holes. The multiple first and second through holes cooperate to allow the passage of reinforcing bars. The fixed tensioning part and the movable tensioning part cooperate to stretch the reinforcing bars laid during bridge construction to adjust the prestress of the reinforcing bars. It also includes two first anchors and two second anchors. The two first anchors are respectively disposed inside the first tension base and the second tension base, and the two second anchors are respectively disposed inside the first extension seat and the second extension seat. The first anchors and the second anchors are used to fix the reinforcing bars passing through the first through hole and the second through hole. It also includes a fixed side plate and a movable side plate, which are located on both sides of the fixed tension part and the movable tension part, respectively. The fixed side plate is fixedly connected to the top of the fixed base, and the movable side plate is slidably fitted to the fixed base. Sliding holes are provided in both the fixed side plate and the movable side plate. Fixed seats are fixedly installed at both ends of the fixed tension part, and movable seats are fixedly installed at both ends of the movable tension part. The two fixed seats are fixedly installed through one side of the fixed side plate and the movable side plate, respectively. The two movable seats are slidably connected to the corresponding fixed side plate and the movable side plate through sliding holes. It also includes two jacks, which are detachably installed on one side of two fixed seats. One end of the piston rod of each of the two jacks is fixedly connected to one side of an adjacent movable seat. The two jacks are used to push the movable tensioning part to move and complete the tensioning of the steel bar. It also includes two sets of extension components, which are used to perform horizontal extension of the fixed tension part and the movable tension part, respectively.

[0007] In one possible design, the first and second stretching bases have identical structures, as do the first and second extension seats. The extension assembly includes a fixing block fixedly mounted on the top of the second extension seat. The top of the second stretching base has a sliding groove. The fixing block passes through the sliding groove through the top of the second stretching base and is slidably connected to it. A first screw is rotatably mounted on the top of the second stretching base via a bracket. A handwheel is fixedly mounted on one end of the first screw to assist in rotating it. The first screw is threadedly connected to the fixing block. A positioning post slides through the top of the second stretching base. The positioning post is located at the end of the second stretching base with an opening. A return spring is sleeved on the outer wall of the positioning post. One end of the return spring is fixedly connected to the top of the second stretching base, and the other end is fixedly connected to the outer wall of the positioning post. The bottom end of the positioning post has a spherical arc surface. The top of the second extension seat has multiple positioning grooves. The positioning post cooperates with multiple second extension seats. The positioning post is used to limit the position of the second extension seat after it extends, enabling the first through hole and the second through hole to correspond and cooperate.

[0008] In one possible design, a first mounting groove is provided on one side of both the first and second tension bases, and a second mounting groove is provided on one side of both the first and second extension seats. Two first retaining plates are slidably disposed inside the first mounting groove. Multiple first springs are fixedly installed on the opposite sides of the two first retaining plates, and the other ends of the multiple first springs are fixedly connected to the inner wall of the first mounting groove. Both first retaining plates cooperate with a first anchor to fix the first anchor. Similarly, two second retaining plates are slidably disposed inside the second mounting groove. Multiple second springs are fixedly installed on the opposite sides of the two second retaining plates, and the other ends of the multiple second springs are fixedly connected to the inner wall of the second mounting groove. Both second retaining plates cooperate with a second anchor to fix the second anchor.

[0009] In one possible design, one side of each of the two corresponding first clamping plates and the two corresponding second clamping plates is provided with a bevel for quick installation of the first and second anchors. Multiple auxiliary grooves are provided on the beveled sides of the multiple first and second clamping plates to allow the user to push them from the outside, thus enabling the disassembly of the first and second anchors.

[0010] In one possible design, a first fixing plate is fixedly installed on the top of each of the two movable seats, and a second fixing plate is fixedly installed on the top of each of the two fixed seats. A second screw rod is rotatably passed through one side of the second fixing plate, and a support sleeve is threaded on the outer wall of the second screw rod. The other end of the support sleeve abuts against one side of the first fixing plate. The support sleeve and the second screw rod cooperate to provide abutment support for the moved tensioning part after it has been moved, and can replace the jack to complete the continuous tension support of the reinforcing bar.

[0011] In one possible design, an abutment block is fixedly installed at one end of the support sleeve near the first fixed plate. The abutment block cooperates with the first fixed plate to ensure the stability of the second screw and the support sleeve when supported. A hexagonal sleeve is fixedly fitted on the outer wall of the support sleeve. The hexagonal sleeve is used to restrict the rotation of the support sleeve by the user to ensure the normal extension of the support sleeve. A turntable is fixedly installed at one end of the second screw, which allows the user to quickly complete the rotation adjustment of the second screw.

[0012] In one possible design, a plurality of protruding strips are fixedly installed on the top of the fixed base, and the bottom of the movable tensioning part slides in cooperation with the plurality of protruding strips. The plurality of protruding strips are used to ensure the stable movement of the movable tensioning part during tensioning, thereby ensuring a good tensioning effect on the reinforcing bar.

[0013] In one possible design, a second mounting plate is fixedly installed at both ends of the movable side plate. Each of the two second mounting plates has a second mounting hole. The second mounting plates and the second mounting holes are used to fix the movable side plate. The two second mounting plates are slidably engaged with the top of the adjacent first mounting plate. The two second mounting holes are engaged with the adjacent first mounting holes. This design avoids interfering with the installation of the fixed base when the first and second extension seats are not extended.

[0014] In one possible design, a scale is fixedly installed on the top of the fixed side plate, and the scale is provided with graduations. An indicator strip is fixedly installed on the top of the adjacent first fixed plate, and one end of the indicator strip cooperates with the scale to assist the user in accurately stretching the reinforcing bar.

[0015] A method for using a high-efficiency prestressed adjustable municipal bridge construction device includes the following steps: S1. In use, the user can install the device on one side of the laid-out steel reinforcement structure. Multiple steel bars in the steel reinforcement structure are passed through multiple first and second through holes in the fixed tensioning part and the movable tensioning part, respectively. At this time, the first and second anchors in the fixed tensioning part and the movable tensioning part can achieve unidirectional fixation of the steel bars, preventing retraction. Then, the user can push the movable tensioning part using the jacks on both sides. Multiple protrusions on the fixed base, as well as the fixed side plate and sliding holes, ensure that the movable tensioning part moves stably, thereby completing the tensioning of the steel bars and adjusting the prestress of the steel bars. When tensioning the steel bars, the user can accurately judge the tensioning length of the steel bars by observing the position change of the indicator bar on the scale, avoiding over-tensioning and damage to the steel bars. S2. When using the device, the user can extend the fixed tensioning part and the movable tensioning part to different degrees depending on the number of steel bars to be stretched. The user only needs to rotate the handwheels on the fixed tensioning part and the movable tensioning part at the same time. At this time, the first screw can push the fixed block to move, and then the first extension seat and the second extension seat can be pushed out from the first tensioning base and the second tensioning base respectively. When the first extension seat and the second extension seat are pushed out, since the top of the first extension seat and the second extension seat are provided with multiple positioning grooves, when the first extension seat and the second extension seat move, their tops can abut against the positioning post and make it move backward. When the first extension seat and the second extension seat gradually move, the arc end of the positioning post will be inserted into the corresponding positioning groove under the action of the return spring, which can complete the positioning of the first extension seat and the second extension seat. At this time, it can be ensured that the multiple first through holes and the second through holes can correspond to each other, ensuring that the steel bars pass through well and are fixed. S3. When maintaining the equipment, users can disassemble and replace the first and second anchors at any time, resulting in good maintenance. It also allows for the fixing of steel bars of different specifications. During disassembly, users can use multiple auxiliary grooves to push the corresponding first and second clamping plates until the first and second anchors disengage, allowing them to be removed for maintenance or replacement. When installing the first and second anchors, users can directly insert them into the corresponding first and second mounting slots. Taking the first anchor as an example, it can directly press against the inclined surfaces of the two first clamping plates and cause them to retract until the first anchor is fully inside the first mounting slot. Under the action of multiple first springs, the two first clamping plates can limit and engage the first anchor. Both ends of the first and second anchors are provided with protrusions to prevent vertical movement after installation, ensuring a good installation and fixing effect. S4. After the user uses the jack to stretch the steel bar, the second screw can be rotated by the turntable, and the support sleeve can be fixed at the same time to prevent it from rotating synchronously. Then the support sleeve can be pushed out. The other end of the support sleeve can abut against the first fixed plate and replace the jack to complete the support between the fixed stretching part and the moving stretching part. This can reduce the wear on the jack when the steel bar is being stretched, and the jack does not need to be occupied for a long time, so it can be easily put into other work. Beneficial effects

[0016] In this invention, the high-efficiency prestressed adjustable municipal bridge construction device adopts a modular design, dividing the device into multiple independent components, making the structure simpler and clearer. Simultaneously, by optimizing the operation method, such as using simple operating components like handwheels and jacks, users can easily complete operations such as fixing, stretching, and adjusting the reinforcing bars, reducing operational difficulty and improving construction efficiency. In this invention, the high-efficiency prestressed adjustable municipal bridge construction device can be adapted to the amount of steel bars to be stretched by adjusting the length of the fixed tensioning part and the movable tensioning part. Whether it is a small number or a large number of steel bars, it can achieve efficient and precise prestressed stretching, which greatly improves the flexibility and applicability of the device. In this invention, the high-efficiency prestressed adjustable municipal bridge construction device achieves precise positioning and fixation between the tension base and the extension seat by setting precise positioning grooves and positioning columns, which can better complete the fixation and tensioning of the reinforcing bars.

[0017] In this invention, the high-efficiency prestressed adjustable municipal bridge construction device can conveniently and quickly replace and install anchorages, improving the maintenance efficiency of the device, and further facilitating the fixing of steel bars of different specifications, greatly improving the flexibility of the device.

[0018] In this invention, the high-efficiency prestressed adjustable municipal bridge construction device adopts a modular design, with a simple and clear structure and convenient operation, greatly reducing construction difficulty and cost. By adjusting the length of the fixed tensioning part and the movable tensioning part, the device can flexibly adapt to the tensioning requirements of different numbers of steel bars, achieving efficient and precise prestressing tensioning. In addition, the precise positioning groove and positioning column design ensures the accuracy and stability of the adjustment between the tensioning base and the extension seat. At the same time, the quick disassembly and replacement of the anchorages can facilitate the fixing of steel bars of different specifications, greatly improving the flexibility of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention; Figure 2 This is a schematic diagram of the tension section of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention, showing its extended state. Figure 3 This is a schematic diagram of the fixed base structure of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention; Figure 4 This is a schematic diagram of the tension section structure of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention. Figure 5 This is a schematic diagram of the disassembled tension section of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention. Figure 6 This is a schematic diagram of the disassembled structure of the anchor fixing part of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention; Figure 7 This is a schematic diagram of the tension base and extension seat structure of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention; Figure 8 This is a schematic diagram of the second screw and support sleeve structure of a high-efficiency prestressed adjustable municipal bridge construction device proposed in this invention.

[0020] In the diagram: 1. Fixed base; 2. Fixed side plate; 3. Fixed tensioning part; 4. Movable tensioning part; 5. Movable side plate; 6. Sliding hole; 7. First tensioning base; 8. First extension seat; 9. Second tensioning base; 10. Second extension seat; 11. Protrusion; 12. First mounting plate; 13. First mounting hole; 14. First through hole; 15. Second through hole; 16. Movable seat; 17. Fixed base; 18. Jack; 19. Fixed block; 20. Positioning groove; 21. Slide groove; 22. First screw; 23. Handwheel; 24. Positioning pin; 25. Return spring; 26. First mounting groove; 27. First anchor; 28. First clamping plate; 29. ​​First spring; 30. Second mounting groove; 31. Second anchor; 32. Second clamping plate; 33. Second spring; 34. First fixing plate; 35. Second fixing plate; 36. Second screw; 37. Support sleeve; 38. Hexagonal sleeve; 39. Abutment block; 40. Turntable; 41. Scale; 42. Indicator strip; 43. Second mounting plate; 44. Second mounting hole; 45. Auxiliary groove. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1

[0022] Reference Figure 1-8A municipal bridge construction device includes: a fixed base 1, a fixed tensioning part 3, a movable tensioning part 4, two first anchors 27, two second anchors 31, a fixed side plate 2, a movable side plate 5, two jacks 18, and two sets of extension components. Two first mounting plates 12 are fixedly installed on both sides of the fixed base 1. Two first mounting holes 13 are opened in each of the multiple first mounting plates 12. The fixed base 1 can be stably installed at the construction site through the multiple first mounting holes 13. The fixed tensioning part 3 is fixedly installed on the top of the fixed base 1, and the movable tensioning part 4 is slidably installed on the top of the fixed base 1. The fixed tensioning part 3 consists of a first tensioning base 7 and a first extension seat 8, with the first extension seat 8 slidably installed inside the first tensioning base 7. The movable tensioning part 4 consists of a second tensioning base 9 and a second extension seat 10, with the second extension seat 10 slidably installed inside the second tensioning base 9. The first tensioning base 7 and the second tensioning base 9 have the same structure, as do the first extension seat 8 and the second extension seat 10. Multiple first through holes 14 are provided in both the first tensioning base 7 and the second tensioning base 9, and multiple second through holes 15 are provided in both the first extension seat 8 and the second extension seat 10. The multiple first through holes 14 and the second through holes 15 cooperate to allow the steel bars to pass through. The fixed tensioning part 3 and the movable tensioning part 4 cooperate to stretch the steel bars laid during bridge construction to adjust the prestress of the steel bars. By adopting the structure of the tensioning base and the extension seat cooperating, the device can be flexibly adapted and adjusted according to the number of steel bars to be stretched. Two first anchors 27 are respectively disposed inside the first tension base 7 and the second tension base 9, and two second anchors 31 are respectively disposed inside the first extension seat 8 and the second extension seat 10. The first anchors 27 and the second anchors 31 are used to fix the reinforcing bars passing through the first through hole 14 and the second through hole 15. Fixed side plate 2 and movable side plate 5 are located on both sides of fixed tension part 3 and movable tension part 4, respectively. Fixed side plate 2 is fixedly connected to the top of fixed base 1, and movable side plate 5 is slidably fitted to fixed base 1. Sliding holes 6 are provided in both fixed side plate 2 and movable side plate 5. Fixed seats 17 are fixedly installed at both ends of fixed tension part 3, and movable seats 16 are fixedly installed at both ends of movable tension part 4. The two fixed seats 17 are fixedly fixed through one side of fixed side plate 2 and movable side plate 5, respectively, and the two movable seats 16 are slidably connected to the corresponding fixed side plate 2 and movable side plate 5 through sliding holes 6. Two jacks 18 are detachably installed on one side of two fixed seats 17. One end of the piston rod of the two jacks 18 is fixedly connected to one side of the adjacent movable seat 16. The two jacks 18 are used to push the movable tensioning part 4 to move and complete the tensioning of the steel bar. Two sets of extension components are used for horizontal extension of the fixed tensioning part 3 and the movable tensioning part 4, respectively. The extension components include a fixing block 19 fixedly installed on the top of the second extension base 10. The top of the second tensioning base 9 is provided with a sliding groove 21. The fixing block 19 passes through the sliding groove 21 through the top of the second tensioning base 9 and is slidably connected to the second tensioning base 9. The top of the second tensioning base 9 is rotatably installed with a first screw 22 through a bracket. A handwheel 23 is fixedly installed at one end of the first screw 22. The handwheel 23 is used to assist in rotating the first screw 22. The first screw 22 is threadedly connected to the fixing block 19. Furthermore, a positioning post 24 is slidably passed through the top of the second stretching base 9. The positioning post 24 is located at the end of the second stretching base 9 with an opening. A return spring 25 is sleeved on the outer wall of the positioning post 24. One end of the return spring 25 is fixedly connected to the top of the second stretching base 9, and the other end of the return spring 25 is fixedly connected to the outer wall of the positioning post 24. The bottom end of the positioning post 24 is provided with a spherical arc surface. The top of the second extension seat 10 is provided with multiple positioning grooves 20. The positioning post 24 cooperates with multiple second extension seats 10. The positioning post 24 is used to limit the position of the second extension seat 10 after it extends, so that the first through hole 14 and the second through hole 15 can correspond and cooperate.

[0023] In this embodiment, to facilitate the installation and disassembly of the anchor, a first mounting groove 26 is provided on one side of both the first tension base 7 and the second tension base 9, and a second mounting groove 30 is provided on one side of both the first extension seat 8 and the second extension seat 10. Two first retaining plates 28 are slidably disposed inside the first mounting groove 26. Multiple first springs 29 are fixedly installed on the sides of the two first retaining plates 28 that are far apart from each other. The other ends of the multiple first springs 29 are fixedly connected to the inner wall of the first mounting groove 26. Both first retaining plates 28 cooperate with the first anchor 27. The first anchor 27 is fixed in place. Two second locking plates 32 are slidably arranged inside the second mounting groove 30. Multiple second springs 33 are fixedly installed on the side of the two second locking plates 32 that are far apart from each other. The other ends of the multiple second springs 33 are fixedly connected to the inner wall of the second mounting groove 30. The two second locking plates 32 cooperate with the second anchor 31 to fix the second anchor 31. When the anchor is put into the corresponding mounting groove, the locking plate will be pushed open. When the anchor is fully inserted, the locking plate will be reset under the action of the spring, thereby fixing the anchor.

[0024] This application can be used in the field of bridge construction technology, or in other fields applicable to this application. Example 2

[0025] refer to Figure 1 , 36, 7, 8, Improvements based on Example 1: A high-efficiency prestressed adjustable municipal bridge construction device, which is applied to the field of bridge construction technology; In this embodiment, each of the two corresponding first clamping plates 28 and the two corresponding second clamping plates 32 has a slope on one side for quick installation of the first anchor 27 and the second anchor 31. The sloped sides of the multiple first clamping plates 28 and the multiple second clamping plates 32 are provided with multiple auxiliary grooves 45 for the user to push them from the outside to complete the disassembly of the first anchor 27 and the second anchor 31.

[0026] In this embodiment, to improve the stability of the device, a first fixing plate 34 and a second fixing plate 35 are respectively installed on the top of the movable base 16 and the fixed base 17. A second screw 36 rotates through the second fixing plate 35, and a support sleeve 37 is fitted onto the second screw 36. When it is necessary to fix the position of the movable tension part 4, the second screw 36 can be rotated to make the support sleeve 37 abut against the first fixing plate 34, thereby providing additional support force. An abutment block 39 is fixedly installed at one end of the support sleeve 37 near the first fixing plate 34. The abutment block 39 cooperates with the first fixing plate 34 to ensure the stability of the second screw 36 and the support sleeve 37 when supported. To facilitate user operation, a hexagonal sleeve 38 is fixed to the outer wall of the support sleeve 37, and a turntable 40 is installed at one end of the second screw 36. These designs allow users to more easily rotate the second screw 36 to adjust the position of the support sleeve 37.

[0027] In this embodiment, in order to enhance the stability of the movable stretching part 4 during the stretching process, a plurality of protrusions 11 are also installed on the top of the fixed base 1. These protrusions slide in cooperation with the bottom of the movable stretching part 4 to ensure its stability during the movement.

[0028] In this embodiment, to provide additional support and fixation for the movable side plate 5, second mounting plates 43 are fixed at both ends of it. These mounting plates have second mounting holes 44. When the first protruding seat 8 and the second protruding seat 10 are not extended, the second mounting plate 43 and the first mounting plate 12 can cooperate to align the second mounting hole 44 with the first mounting hole 13, thereby avoiding interference with the installation of the fixed base 1.

[0029] In this embodiment, a scale 41 is also installed on the top of the fixed side plate 2, while an indicator strip 42 is fixed on the top of the movable seat 16. These designs allow users to more precisely control the elongation of the reinforcing bars.

[0030] A method for using a high-efficiency prestressed adjustable municipal bridge construction device includes the following steps: S1. In use, the user can install the device on one side of the laid-out steel reinforcement structure, and pass one end of multiple steel bars in the steel reinforcement structure through multiple first through holes 14 and second through holes 15 in the fixed tensioning part 3 and the movable tensioning part 4 respectively. At this time, the first anchor 27 and the second anchor 31 in the fixed tensioning part 3 and the movable tensioning part 4 can achieve unidirectional fixation of the steel bars, which can prevent the steel bars from shrinking back. Then, the user can push the movable tensioning part 4 through the jacks 18 on both sides. Multiple protrusions 11 on the fixed base 1, as well as the fixed side plate 2 and sliding hole 6, can ensure that the movable tensioning part 4 moves forward stably when moving, thereby completing the tensioning of the steel bars and realizing the adjustment of the prestress of the steel bars. When tensioning the steel bars, the user can accurately judge the tensioning length of the steel bars by observing the position change of the indicator bar 42 on the scale 41, which can avoid excessive tensioning and damage to the steel bars. S2. When using the device, the user can extend the fixed stretching part 3 and the movable stretching part 4 to different degrees depending on the number of steel bars to be stretched. The user only needs to rotate the handwheel 23 on the fixed stretching part 3 and the movable stretching part 4 at the same time. At this time, the first screw 22 can push the fixed block 19 to move, and then the first extension seat 8 and the second extension seat 10 can be pushed out from the first stretching base 7 and the second stretching base 9 respectively. When the first extension seat 8 and the second extension seat 10 are pushed out, since the top of the first extension seat 8 and the second extension seat 10 are provided with multiple positioning grooves 20, when the first extension seat 8 and the second extension seat 10 move, their tops can abut against the positioning post 24 and make it move backward. When the first extension seat 8 and the second extension seat 10 gradually move, the arc end of the positioning post 24 will be inserted into the corresponding positioning groove 20 under the action of the return spring 25, which can complete the positioning of the first extension seat 8 and the second extension seat 10. At this time, it can be ensured that the multiple first through holes 14 and the second through holes 15 can correspond to each other, ensuring that the steel bars pass through well and are fixed. S3. When performing equipment maintenance, users can disassemble and replace the first anchor 27 and the second anchor 31 at any time, achieving good maintenance results and also enabling the fixing of steel bars of different specifications. During disassembly, users can use multiple auxiliary grooves 45 to push the corresponding first clamping plate 28 and second clamping plate 32 until the first anchor 27 and second anchor 31 disengage, allowing them to be removed for maintenance or replacement. During installation, users can directly insert the first anchor 27 and second anchor 31 into the corresponding... In the corresponding first mounting groove 26 and second mounting groove 30, taking the first anchor 27 as an example, the first anchor 27 can directly press the inclined surfaces of the two first clamping plates 28 and make them retract until the first anchor 27 is completely inserted into the first mounting groove 26. Under the action of multiple first springs 29, the two first clamping plates 28 can limit and engage the first anchor 27. Both ends of the first anchor 27 and the second anchor 31 are provided with protrusions, which can prevent them from moving in the vertical direction after installation, ensuring that the installation and fixing effect of the first anchor 27 and the second anchor 31 is good. S4. After the user uses the jack 18 to stretch the steel bar, the second screw 36 can be rotated through the turntable 40. While rotating, the support sleeve 37 is fixed so that it cannot rotate synchronously. Then the support sleeve 37 can be pushed out. The other end of the support sleeve 37 can abut against the first fixing plate 34 and replace the jack 18 to complete the support between the fixed stretching part 3 and the movable stretching part 4. This can reduce the wear on the jack 18 when the steel bar is being stretched. At the same time, the jack 18 does not need to be occupied for a long time and can be easily put into other work.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency prestressed adjustable municipal bridge construction device, characterized in that, include: A fixed base (1) is provided, and two first mounting plates (12) are fixedly installed on both sides of the fixed base (1). Two first mounting holes (13) are provided in each of the first mounting plates (12) for installing the fixed base (1). It also includes a fixed tensioning part (3) and a movable tensioning part (4). The fixed tensioning part (3) is fixedly disposed on the top of the fixed base (1), and the movable tensioning part (4) is slidably disposed on the top of the fixed base (1). The fixed tensioning part (3) is composed of a first tensioning base (7) and a first extension seat (8). The first extension seat (8) is slidably disposed inside the first tensioning base (7). The movable tensioning part (4) is composed of a second tensioning base (9) and a second extension seat (10). The second extension seat (10) is slidably disposed inside the second tensioning base (9). The first tensioning base (7) and the second tensioning base (9) are each provided with a plurality of first through holes (14). The first extension seat (8) and the second extension seat (10) are provided with a plurality of second through holes (15). The plurality of first through holes (14) and second through holes (15) cooperate to allow the steel bars to pass through. The fixed tensioning part (3) and the movable tensioning part (4) cooperate to stretch the steel bars laid out during bridge construction in order to adjust the prestress of the steel bars. It also includes two first anchors (27) and two second anchors (31). The two first anchors (27) are respectively disposed inside the first tension base (7) and the second tension base (9), and the two second anchors (31) are respectively disposed inside the first extension seat (8) and the second extension seat (10). The first anchors (27) and the second anchors (31) are used to fix the reinforcing bars passing through the first through hole (14) and the second through hole (15). It also includes a fixed side plate (2) and a movable side plate (5). The fixed side plate (2) and the movable side plate (5) are located on both sides of the fixed tension part (3) and the movable tension part (4), respectively. The fixed side plate (2) is fixedly connected to the top of the fixed base (1). The movable side plate (5) is slidably connected to the fixed base (1). The fixed side plate (2) and the movable side plate (5) are both provided with sliding holes (6). The fixed tension part (3) is fixedly installed with fixed seats (17) at both ends. The movable tension part (4) is fixedly installed with movable seats (16) at both ends. The two fixed seats (17) are fixedly connected to one side of the fixed side plate (2) and the movable side plate (5), respectively. The two movable seats (16) are slidably connected to the corresponding fixed side plate (2) and the movable side plate (5) through the sliding holes (6). It also includes two jacks (18), which are detachably installed on one side of two fixed seats (17). One end of the piston rod of the two jacks (18) is fixedly connected to one side of the adjacent moving seat (16). The two jacks (18) are used to push the moving tensioning part (4) to move and complete the tensioning of the steel bar. It also includes two sets of extension components, which are used to perform horizontal extension of the fixed stretching part (3) and the movable stretching part (4), respectively.

2. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 1, characterized in that, The first tension base (7) and the second tension base (9) have the same structure, and the first extension seat (8) and the second extension seat (10) have the same structure. The extension assembly includes a fixing block (19) fixedly installed on the top of the second extension seat (10). The top of the second tension base (9) is provided with a sliding groove (21). The fixing block (19) passes through the top of the second tension base (9) through the sliding groove (21) and is slidably connected to the second tension base (9). The top of the second tension base (9) is rotatably mounted with a first screw (22) via a bracket. A handwheel (23) is fixedly installed at one end of the first screw (22). The handwheel (23) is used to assist in rotating the first screw (22). The first screw (22) is threadedly connected to the fixing block (19). The second tension... A positioning post (24) slides through the top of the base (9). The positioning post (24) is located at the end of the second tension base (9) with an opening. A return spring (25) is sleeved on the outer wall of the positioning post (24). One end of the return spring (25) is fixedly connected to the top of the second tension base (9), and the other end of the return spring (25) is fixedly connected to the outer wall of the positioning post (24). A spherical arc surface is provided at the bottom of the positioning post (24). Multiple positioning grooves (20) are provided on the top of the second extension seat (10). The positioning post (24) cooperates with multiple second extension seats (10). The positioning post (24) is used to limit the position of the second extension seat (10) after it extends, so that the first through hole (14) and the second through hole (15) can correspond and cooperate.

3. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 2, characterized in that, The first tension base (7) and the second tension base (9) are provided with a first mounting groove (26) on one side, and the first extension seat (8) and the second extension seat (10) are provided with a second mounting groove (30) on one side. The first mounting groove (26) is slidably provided with two first clamping plates (28). Multiple first springs (29) are fixedly installed on the side of the two first clamping plates (28) that are far apart from each other. The other end of the multiple first springs (29) is fixedly connected to the inner wall of the first mounting groove (26). The two first clamping plates (28) cooperate with the first anchor (27) to fix the first anchor (27). The second mounting groove (30) is slidably provided with two second clamping plates (32). Multiple second springs (33) are fixedly installed on the side of the two second clamping plates (32) that are far apart from each other. The other end of the multiple second springs (33) is fixedly connected to the inner wall of the second mounting groove (30). The two second clamping plates (32) cooperate with the second anchor (31) to fix the second anchor (31).

4. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 3, characterized in that, Two corresponding first clamping plates (28) and two corresponding second clamping plates (32) are provided with a bevel on one side for quick installation of the first anchor (27) and the second anchor (31). Multiple auxiliary grooves (45) are provided on the beveled sides of the multiple first clamping plates (28) and the multiple second clamping plates (32) for the user to push them from the outside to complete the disassembly of the first anchor (27) and the second anchor (31).

5. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 4, characterized in that, The top of each of the two movable seats (16) is fixedly installed with a first fixed plate (34), and the top of each of the two fixed seats (17) is fixedly installed with a second fixed plate (35). A second screw (36) is rotatably passed through one side of the second fixed plate (35). A support sleeve (37) is threaded on the outer wall of the second screw (36). The other end of the support sleeve (37) abuts against one side of the first fixed plate (34). The support sleeve (37) and the second screw (36) cooperate to provide abutment support for the moved tensioning part (4) after it has been moved. This can replace the jack (18) to complete the continuous tension support of the steel bar.

6. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 5, characterized in that, A stop block (39) is fixedly installed at one end of the support sleeve (37) near the first fixed plate (34). The stop block (39) cooperates with the first fixed plate (34) to ensure the stability of the second screw (36) and the support sleeve (37) when supported. A hexagonal sleeve (38) is fixedly fitted on the outer wall of the support sleeve (37). The hexagonal sleeve (38) is used to restrict the rotation of the support sleeve (37) by the user to ensure the normal extension of the support sleeve (37). A turntable (40) is fixedly installed at one end of the second screw (36) to enable the user to quickly complete the rotation adjustment of the second screw (36).

7. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 6, characterized in that, The top of the fixed base (1) is fixedly installed with multiple protrusions (11), and the bottom of the movable tensioning part (4) is slidably engaged with the multiple protrusions (11). The multiple protrusions (11) are used to ensure the stable movement of the movable tensioning part (4) during tensioning, and to ensure a good tensioning effect on the reinforcing bar.

8. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 1, characterized in that, The movable side plate (5) is fixedly installed with a second mounting plate (43) at both ends. The two second mounting plates (43) are provided with a second mounting hole (44). The second mounting plate (43) and the second mounting hole (44) are used to fix the movable side plate (5). The two second mounting plates (43) are slidably engaged with the top of the adjacent first mounting plate (12). The two second mounting holes (44) are engaged with the adjacent first mounting hole (13). When the first extension seat (8) and the second extension seat (10) are not extended, the installation of the fixed base (1) is avoided.

9. The high-efficiency prestressed adjustable municipal bridge construction device according to claim 7, characterized in that, A scale (41) is fixedly installed on the top of the fixed side plate (2). The scale (41) is provided with graduations. An indicator strip (42) is fixedly installed on the top of the adjacent first fixed plate (34). One end of the indicator strip (42) cooperates with the scale (41) to assist the user in completing the precise stretching of the steel bar.

10. The method of using the high-efficiency prestressed adjustable municipal bridge construction device according to claim 9, characterized in that, Includes the following steps: S1. When in use, the user can install the device on one side of the laid-out steel reinforcement structure and pass one end of multiple steel bars in the steel reinforcement structure through multiple first through holes (14) and second through holes (15) in the fixed tensioning part (3) and the movable tensioning part (4). At this time, the first anchor (27) and the second anchor (31) in the fixed tensioning part (3) and the movable tensioning part (4) can achieve unidirectional fixation of the steel bars, which can prevent the steel bars from shrinking. Then, the user can push the movable tensioning part (4) through the jacks (18) on both sides. Multiple protrusions (11) on the fixed base (1) and the fixed side plate (2) and sliding hole (6) can ensure that the movable tensioning part (4) moves forward stably, thereby completing the tensioning of the steel bars and adjusting the prestress of the steel bars. When the steel bars are being tensioned, the user can accurately judge the tensioning length of the steel bars by observing the position change of the indicator bar (42) on the scale (41), which can avoid excessive tensioning and damage to the steel bars. S2. When using the device, the user can extend the fixed tensioning part (3) and the movable tensioning part (4) to different degrees depending on the number of steel bars to be stretched. The user only needs to rotate the handwheel (23) on the fixed tensioning part (3) and the movable tensioning part (4) at the same time. At this time, the first screw (22) can push the fixed block (19) to move, and then the first extension seat (8) and the second extension seat (10) can be pushed out from the first tensioning base (7) and the second tensioning base (9) respectively. When pushing out the first extension seat (8) and the second extension seat (10), due to the first extension seat (8) and the second extension seat (10) The top of each extension seat (10) is provided with multiple positioning grooves (20). When the first extension seat (8) and the second extension seat (10) move, their tops can abut against the positioning post (24) and make them move backward. When the first extension seat (8) and the second extension seat (10) move gradually, the arc end of the positioning post (24) will be inserted into the corresponding positioning groove (20) under the action of the return spring (25), which can complete the positioning of the first extension seat (8) and the second extension seat (10). At this time, it can be ensured that multiple first through holes (14) and second through holes (15) can correspond to each other, ensuring that the reinforcing bar passes through and is fixed. S3. When maintaining the equipment, the user can disassemble and replace the first anchor (27) and the second anchor (31) at any time, achieving good maintenance results. It can also fix steel bars of different specifications. During disassembly, the user can use multiple auxiliary grooves (45) to push the corresponding first clamping plate (28) and second clamping plate (32) until the first anchor (27) and second anchor (31) disengage, allowing them to be removed for maintenance or replacement. When installing the first anchor (27) and second anchor (31), the user can directly insert the first anchor (27) and second anchor (31) into the corresponding... In the corresponding first mounting groove (26) and second mounting groove (30), taking the first anchor (27) as an example, the first anchor (27) can directly squeeze the inclined surfaces of the two first clamping plates (28) and make them retreat until the first anchor (27) is completely inserted into the first mounting groove (26). Under the action of multiple first springs (29), the two first clamping plates (28) can limit and engage the first anchor (27). Both ends of the first anchor (27) and the second anchor (31) are provided with protrusions, which can prevent them from moving in the vertical direction after installation, thus ensuring the installation and fixation of the first anchor (27) and the second anchor (31). S4. After the user uses the jack (18) to stretch the steel bar, the second screw (36) can be rotated by the turntable (40), and the support sleeve (37) can be fixed at the same time to prevent it from rotating synchronously. Then the support sleeve (37) can be pushed out. The other end of the support sleeve (37) can abut against the first fixed plate (34) and replace the jack (18) to complete the support between the fixed stretching part (3) and the movable stretching part (4). This can reduce the wear on the jack (18) when the steel bar is stretched. At the same time, the jack (18) does not need to be occupied for a long time and can be conveniently put into other work.

Images