A rotatable tie rod mounted on top of an i-beam form

Abstract

The application provides a rotatable pull rod installed on the top of an I-beam template, belonging to the field of prestressed concrete bridges, which comprises a fixed bottom plate, a movable bottom plate arranged on one side of the fixed bottom plate, a telescopic mechanism connecting the movable bottom plate and the fixed bottom plate, a positioning clamping block fixedly connected to the bottom of the fixed bottom plate and the movable bottom plate, and a U-shaped frame fixedly connected to the side end of the fixed bottom plate and the movable bottom plate. The pushing of the driving spring is offset by the driving pawl, and the driving pawl is unlocked. Under the pushing of the reset coil spring, the rotating shaft is rotated, the rotating shaft drives the driving pawl to rotate, the driving pawl is reset, and the two driving pawls are reset one by one, so that the fixing of the device and the two I-beam templates is conveniently released, the device is quickly disassembled, the device is quickly assembled and disassembled, the installation mode between the butterfly buckle and the screw rod is avoided, the installation speed is improved, and the flow operation of the beam bench is accelerated.

Description

Technical Field

[0001] This invention belongs to the field of prestressed concrete bridges, specifically relating to a rotatable tie rod installed on the top of the formwork of beam I. Background Technology

[0002] Prestressed concrete beams: A force is pre-applied to the beam to generate a negative bending moment at mid-span, partially offsetting the positive bending moment during use. Prestressed concrete structures: To prevent premature cracking in reinforced concrete structures, high-strength steel bars and high-strength concrete are fully utilized. Essentially, prestress is applied to structural members before they are subjected to load to reduce or offset the tensile stress in the concrete caused by the load, thus minimizing tensile stress in the structural members, or even placing them in a compressive state.

[0003] Prestressed concrete I-beams are a common type of bridge. Each I-beam has a parallel concrete slab at the top and bottom, connected by a vertical concrete web. The side formwork of the I-beam is irregularly shaped, making it difficult to reinforce with ordinary fasteners or tie rods. Furthermore, precast bridges are long, and the commonly used butterfly-buckle tie rods are slow to install. Each time the formwork is removed, the butterfly buckle and tie rods must be completely removed and reinstalled during the next formwork installation. This disassembly and installation method significantly slows down the assembly line operation of the beam fabrication platform. Therefore, we propose a rotatable tie rod installed on the top of the I-beam formwork. Summary of the Invention

[0004] The purpose of this invention is to provide a rotatable tie rod that can be installed on the top of the I-beam formwork, in order to solve the problems of the slow construction speed of the commonly used butterfly buckle fastening tie rod, and the fact that the butterfly buckle and tie rod need to be completely removed every time the formwork is removed, and then reinstalled when the formwork is installed again. The disassembly and installation method of the butterfly buckle and tie rod seriously slows down the assembly line operation of the beam fabrication platform.

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

[0006] A rotatable tie rod installed on the top of the formwork of an I-beam, including a fixed base plate;

[0007] A movable base plate is set on one side of a fixed base plate. The movable base plate and the fixed base plate are connected by a telescopic mechanism. Positioning blocks are fixedly connected to the bottom of both the fixed base plate and the movable base plate. U-shaped frames are fixedly connected to the side ends of both the fixed base plate and the movable base plate.

[0008] The support block is provided in two parts, which are fixedly connected to the top of the fixed base plate and the movable base plate. An adjustment mechanism and a positioning mechanism are provided between the two support blocks.

[0009] Two flip-blocks are provided, each mounted between the inner walls of two U-shaped frames via two rotating shafts; and

[0010] The linkage mechanism consists of two sets, which are located on the sides of the fixed base plate and the movable base plate. The two sets of linkage mechanisms are connected to two rotating shafts to rotate the two pawls.

[0011] As a preferred embodiment of the present invention, each set of the linkage mechanism includes a limiting component and a rotating component. Two sets of limiting components are provided, and the two sets of limiting components are located at the side ends of the two U-shaped frames and connected to two rotating shafts. Two sets of rotating components are provided, and the two sets of rotating components are located at the side ends of the two U-shaped frames and connected to two rotating shafts.

[0012] As a preferred embodiment of the present invention, each set of rotating components includes an internal hexagonal slotted gear, a transmission gear, and a gear cover. The transmission gear is fixedly connected to the side end of the rotating shaft, the internal hexagonal slotted gear is rotatably connected to the side end of the U-shaped frame, and the gear cover is sleeved on the outer surface of the internal hexagonal slotted gear and the transmission gear. The gear cover is connected to the U-shaped frame.

[0013] In a preferred embodiment of the present invention, the limiting assembly includes a ratchet cover, a swing groove, a coil spring, a ratchet, a pawl, a fixing block, and a pawl. The ratchet is fixedly connected to the side end of the pawl, the fixing block is fixedly connected to the side end of the U-shaped frame, the pawl is rotatably connected to the side end of the U-shaped frame, and the pawl is fixedly connected between the fixing block and the pawl. The ratchet cover is sleeved on the outer surface of the ratchet, the pawl, the fixing block, and the pawl. The swing groove is formed on the side end of the ratchet cover and corresponds to the pawl. The coil spring cover is fixedly connected to the side end of the ratchet cover and communicates with the ratchet cover. The coil spring is disposed between the inner walls of the coil spring cover, one end of the coil spring is fixedly connected to the side end of the rotating shaft, and the other end of the coil spring is fixedly connected to the inner wall of the coil spring cover.

[0014] In a preferred embodiment of the present invention, the adjusting mechanism includes a fixed rod, a sliding rod, a locking groove, a locking bar, a square slide tube, an elastic locking block, a pull rod, a compression spring, a second slide groove, and a second slider. The fixed rod is rotatably connected to the top of one support block, and the sliding rod is rotatably connected to the top of another support block. The locking groove is formed at the side end of the fixed rod, and the square slide tube is fixedly connected to the bottom of the fixed rod. The square slide tube communicates with the locking groove, the locking bar slides within the locking groove, and the elastic locking block slides within the square slide tube. The square slide tube engages with the elastic block, the pull rod is inserted into the bottom of the square slide tube and connected to the elastic block, the compression spring is sleeved on the circumferential surface of the pull rod, the bottom of the compression spring is connected to the square slide tube, and the top of the compression spring is connected to the elastic block. There are two second slide grooves, which are formed on the inner wall of the square slide tube. There are two second sliders, which slide within the two second slide grooves. Both second slide grooves are connected to the elastic block.

[0015] In a preferred embodiment of the present invention, the positioning mechanism includes a positioning block, a threaded rod, a self-locking nut, a circular groove, and a positioning slot. Two positioning slots are provided, located on the tops of two support blocks. Two positioning blocks are provided, fixedly connected to the bottom of a fixed rod and a sliding rod, and aligned with the two positioning slots. The circular groove is located within one support block and communicates with the positioning slot. The threaded rod is inserted into the circular groove, with one end extending through to the side end of one positioning block. The self-locking nut is threaded onto the circumferential surface of the threaded rod.

[0016] In a preferred embodiment of the present invention, the telescopic mechanism includes a telescopic groove, a telescopic rod, a push spring, a first sliding groove, and a first slider. The telescopic groove is formed on the side end of the fixed base plate. The telescopic rod slides between the inner walls of the telescopic groove. Multiple push springs are provided, with one end of each push spring fixedly connected to the inner wall of the telescopic groove and the other end connected to the telescopic rod. The first sliding groove is formed at the bottom of the fixed base plate. The first slider slides between the inner walls of the first sliding groove and is connected to the telescopic rod.

[0017] In a preferred embodiment of the present invention, a connecting block is fixedly connected to the top of both the fixed base plate and the movable base plate, and two connecting rods are rotatably connected to the top of each of the two connecting blocks, and the two connecting rods are rotatably connected by a hinge shaft.

[0018] In a preferred embodiment of the present invention, rubber pads are fixedly connected to the bottom of both the fixed base plate and the movable base plate.

[0019] As a preferred embodiment of the present invention, the top of the card strip is provided with scale lines.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] In this design, during device installation, in a single limiting assembly, the rotating shaft drives the coil spring to retract and rotate. Under the push of the actuating spring, the actuating pawl engages with the ratchet in one direction, preventing the rotating shaft from rotating in the opposite direction and achieving one-way locking of the actuating pawl. This prevents the device from detaching from the top of the two I-beam templates. When disassembling the device, the two actuating pawls are moved one by one. In each limiting assembly, the actuating pawl counteracts the push of the actuating spring, releasing the locking of the actuating spring. Under the push of the coil spring's reset, the rotating shaft rotates, which in turn rotates the actuating pawl, causing it to reset. By resetting the two actuating pawls one by one, it is easy to release the device from the two I-beam templates, enabling rapid device disassembly. This detachable and rapid installation and disassembly avoids the installation method using butterfly buckles and screws, increasing installation speed and accelerating the assembly line operation of the beam fabrication platform.

[0022] In this solution, when there is an error in the distance between the two I-beam templates, the elastic block and the locking strip are released by pulling the tie rod, and the sliding rod is pulled to make the locking strip slide in the locking strip groove, changing the distance between the fixed base plate and the movable base plate, so that the fixed base plate and the movable base plate correspond to the two I-beam templates, thereby adjusting the unfolding distance of the device, making the device adapt to different spacings between the two I-beam templates, and improving the applicability of the device.

[0023] In this scheme, after adjusting the unfolding distance of the device, rotating the self-locking nut and connecting it to the threaded rod with bolts allows one end of the threaded rod to be inserted into the circular groove. This fine-tunes and locks the distance between the two support blocks, thereby achieving fine-tuning and locking of the distance between the two I-beam templates. This also allows for fine-tuning of the top spacing of the two I-beam templates, ensuring that the two I-beam templates are parallel and improving the quality of the concrete I-beams. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a first installation schematic diagram of a rotatable tie rod installed on the top of the I-beam template according to the present invention;

[0026] Figure 2 This is a second installation schematic diagram of a rotatable tie rod installed on the top of the I-beam template according to the present invention;

[0027] Figure 3This is a first half-sectional view of a rotatable tie rod installed on the top of the I-beam template according to the present invention;

[0028] Figure 4 This invention relates to a rotatable tie rod installed on the top of the I-beam formwork. Figure 3 Enlarged view of point A;

[0029] Figure 5 This is a second half-sectional view of a rotatable tie rod installed on the top of the I-beam template according to the present invention;

[0030] Figure 6 This invention relates to a rotatable tie rod installed on the top of the I-beam formwork. Figure 5 Enlarged view of point B;

[0031] Figure 7 This is an exploded view of a limiting assembly for a rotatable tie rod installed on the top of a beam template according to the present invention.

[0032] Figure 8 This is an exploded view of a rotating assembly of a rotatable tie rod installed on the top of a beam template according to the present invention;

[0033] Figure 9 This is a partial exploded view of a rotatable tie rod installed on the top of the I-beam template according to the present invention.

[0034] In the diagram: 1. Fixed base plate; 2. Movable base plate; 3. Telescopic groove; 4. Telescopic rod; 5. Push spring; 6. First slide groove; 7. First slider; 8. Positioning block; 9. Connecting block; 10. Connecting rod; 11. Support block; 12. Fixed rod; 13. Sliding rod; 14. Locking groove; 15. Locking strip; 17. Square slide tube; 18. Elastic locking block; 19. Pull rod; 20. Compression spring; 21. Second slide groove; 22. Second slider; 2 3. Flip-over locking block; 24. Internal hexagonal slotted gear; 25. Transmission gear; 26. Gear cover; 27. Ratchet cover; 28. Swing groove; 29. ​​Spring cover; 30. Spring; 31. Ratchet; 32. Actuating pawl; 33. Fixing block; 34. Actuating spring; 35. U-shaped frame; 36. Rubber pad; 37. Positioning block; 38. Threaded rod; 40. Self-locking nut; 41. Circular groove; 42. Scale line; 43. Rotating shaft; 44. Positioning groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0036] Reference Figure 1 - Figure 9 A rotatable tie rod installed on the top of the I-beam formwork, comprising:

[0037] Fixed base plate 1;

[0038] The movable base plate 2 is located on one side of the fixed base plate 1. The movable base plate 2 and the fixed base plate 1 are connected by a telescopic mechanism. The bottom of both the fixed base plate 1 and the movable base plate 2 are fixedly connected with positioning blocks 8, and the side ends of both the fixed base plate 1 and the movable base plate 2 are fixedly connected with U-shaped frames 35.

[0039] There are two support blocks 11. The two support blocks 11 are fixedly connected to the top of the fixed base plate 1 and the movable base plate 2. An adjustment mechanism and a positioning mechanism are provided between the two support blocks 11.

[0040] Two flip-blocks 23 are provided, each mounted between the inner walls of two U-shaped frames 35 via two rotating shafts 43; and

[0041] The linkage mechanism is provided in two sets. The two sets of linkage mechanisms are located at the side ends of the fixed base plate 1 and the movable base plate 2, and the two sets of linkage mechanisms are connected to two rotating shafts 43 to rotate the two pawls 32.

[0042] In this invention, the fixed base plate 1 and the movable base plate 2 are used to support and fix the two support blocks 11 and the U-shaped frame 35. The two positioning blocks 8 are set to assist in positioning by abutting against the inner surface of the two I-beam templates. The two U-shaped frames 35 are set to accommodate and fix the two rotating shafts 43, the flipping block 23 and the two sets of linkage mechanisms. The two support blocks 11 are used to support and fix the adjustment mechanism and the locking mechanism. The adjustment mechanism is used to adjust the distance between the fixed base plate 1 and the movable base plate 2. The locking mechanism is used to lock the distance between the fixed base plate 1 and the movable base plate 2. The two flipping blocks 23 fix the device to the top of the two I-beam templates by flipping. The two sets of linkage mechanisms are connected to the two rotating shafts 43 to rotate the two pawls 32.

[0043] Each linkage mechanism includes a limiting component and a rotating component. There are two sets of limiting components, which are located at the side ends of the two U-shaped frames 35 and connected to the two rotating shafts 43. There are also two sets of rotating components, which are located at the side ends of the two U-shaped frames 35 and connected to the two rotating shafts 43.

[0044] In this invention, a single set of limiting components is used to lock and fix the rotation of a single pawl 32 in one direction, and a single set of rotating components is used to rotate the single pawl 32.

[0045] Each rotating assembly includes an internal hexagonal slotted gear 24, a transmission gear 25, and a gear cover 26. The transmission gear 25 is fixedly connected to the side end of the rotating shaft 43, the internal hexagonal slotted gear 24 is rotatably connected to the side end of the U-shaped frame 35, and the gear cover 26 is sleeved on the outer surface of the internal hexagonal slotted gear 24 and the transmission gear 25. The gear cover 26 is connected to the U-shaped frame 35.

[0046] In this invention, in each rotating assembly, the transmission gear 25 drives the actuating spring 34 to rotate, which in turn rotates the flipping block 23. The hexagonal slotted gear 24 has a hexagonal groove on its side end for inserting a hexagonal wrench, which then rotates the hexagonal slotted gear 24. The hexagonal slotted gear 24, through meshing with the transmission gear 25, drives the transmission gear 25 to rotate. The swing groove 28 seals and isolates the hexagonal slotted gear 24 and the transmission gear 25 to prevent oxidation and corrosion. When the device is placed on top of the two I-beam templates, a hexagonal wrench is inserted into the hexagonal slots on the side of the two internal hexagonal slot gears 24. The internal hexagonal slot gears 24 are rotated one by one by the hexagonal wrench. Each internal hexagonal slot gear 24 drives the transmission gear 25 to rotate through meshing with the transmission gear 25. The transmission gear 25 drives the actuating spring 34 to rotate. The rotating shaft 43 drives the flipping block 23 to rotate, so that the flipping block 23 rotates to the bottom of the top plate of the I-beam template. The rotating assembly makes it easy to rotate the flipping block 23.

[0047] The limiting assembly includes a ratchet cover 27, a swing groove 28, a coil spring 30, a ratchet 31, a pawl 32, a fixing block 33, and a pawl 34. The ratchet 31 is fixedly connected to the side end of the pawl 34, the fixing block 33 is fixedly connected to the side end of the U-shaped frame 35, the pawl 32 is rotatably connected to the side end of the U-shaped frame 35, and the pawl 34 is fixedly connected between the fixing block 33 and the pawl 32. The ratchet cover 27 is sleeved on the ratchet 31 and the pawl 34. The outer surfaces of the pawl 32, the fixing block 33, and the actuating spring 34 are provided with a swing groove 28 on the side end of the ratchet cover 27, which corresponds to the actuating pawl 32. The coil spring cover 29 is fixedly connected to the side end of the ratchet cover 27 and is connected to the ratchet cover 27. The coil spring 30 is disposed between the inner walls of the coil spring cover 29. One end of the coil spring 30 is fixedly connected to the side end of the rotating shaft 43, and the other end of the coil spring 30 is fixedly connected to the inner wall of the coil spring cover 29.

[0048] In this invention, in a single-set limiting assembly, ratchet 31 rotates synchronously with actuating spring 34, fixing block 33 supports the elastic extension and contraction of actuating spring 34, actuating pawl 32 engages unidirectionally with ratchet 31 to unidirectionally lock the rotation of rotating shaft 43, actuating spring 34 pushes actuating pawl 32 to engage with ratchet 31, ratchet cover 27 isolates ratchet 31, actuating pawl 32, fixing block 33 and actuating spring 34 to prevent dust and moisture from corroding and oxidizing them, swing groove 28 guides the deflection of actuating pawl 32, coil spring cover 29 accommodates coil spring 30, coil spring 30 pushes actuating spring 34 to rotate in the opposite direction, thereby resetting actuating pawl 32. During installation, in the single-set limiting assembly, rotating shaft 43 drives coil spring 32... The device retracts and rotates. Under the push of the actuating spring 34, the actuating pawl 32 engages with the ratchet 31 in one direction, preventing the rotating shaft 43 from rotating in the opposite direction and achieving one-way locking of the actuating pawl 32. This prevents the device from falling off the top of the two I-beam templates. When the device needs to be disassembled, the two actuating pawls 32 are moved one by one. In each set of limiting components, the actuating pawl 32 counteracts the push of the actuating spring 34, releasing the locking of the actuating spring 34. Under the push of the coil spring 30 for reset, the rotating shaft 43 is driven to rotate. The rotating shaft 43 drives the actuating pawl 32 to rotate, so that the actuating pawl 32 is reset. The two actuating pawls 32 are reset one by one, which facilitates the release of the device from the two I-beam templates and realizes quick disassembly of the device. The detachable quick installation and disassembly avoids the installation method between butterfly buckles and screws, improves the installation speed, and speeds up the assembly line operation of the beam fabrication platform.

[0049] The adjustment mechanism includes a fixed rod 12, a sliding rod 13, a locking groove 14, a locking strip 15, a square slide tube 17, an elastic locking block 18, a pull rod 19, a compression spring 20, a second slide groove 21, and a second slider 22. The fixed rod 12 is rotatably connected to the top of one support block 11, and the sliding rod 13 is rotatably connected to the top of another support block 11. The locking groove 14 is opened at the side end of the fixed rod 12, and the square slide tube 17 is fixedly connected to the bottom of the fixed rod 12. The square slide tube 17 communicates with the locking groove 14. The locking strip 15 slides in the locking groove 14, and the elastic locking block 18 slides in the square slide tube 17. The square slide tube 17 engages with the elastic block 18. The pull rod 19 is inserted into the bottom of the square slide tube 17 and is connected to the elastic block 18. The compression spring 20 is sleeved on the circumferential surface of the pull rod 19. The bottom of the compression spring 20 is connected to the square slide tube 17, and the top of the compression spring 20 is connected to the elastic block 18. There are two second slide grooves 21, which are opened on the inner wall of the square slide tube 17. There are two second sliders 22, which slide in the two second slide grooves 21. Both second slide grooves 21 are connected to the elastic block 18.

[0050] In this invention, the fixed rod 12 supports and fixes a positioning block 37, the sliding rod 13 supports and fixes a locking strip 15 and a positioning block 37, the locking strip groove 14 is opened to accommodate the sliding of the locking strip 15, the square slide tube 17 is used to accommodate the pull rod 19, the elastic locking block 18 and the compression spring 20, the locking strip 15 is used to engage with the elastic locking block 18, and the elastic locking block 18 adjusts the distance between the fixed rod 12 and the sliding rod 13 by engaging with the locking strip 15, the pull rod 19 supports and fixes the elastic locking block 18, the compression spring 20 pushes the elastic locking block 18 closer to the locking strip 15, and the two second sliding grooves 21 are opened to accommodate the sliding of the two second sliders 22. The two second sliders 22, through sliding engagement with the two second sliding grooves 21, guide and restrict the movement of the elastic block 18, improving the accuracy of the docking between the elastic block 18 and the locking strip 15. When there is an error in the distance between the two I-beam templates, by pulling the pull rod 19, the engagement between the elastic block 18 and the locking strip 15 is released, and by pulling the sliding rod 13, the locking strip 15 slides in the locking strip groove 14, changing the distance between the fixed base plate 1 and the movable base plate 2, so that the fixed base plate 1 and the movable base plate 2 correspond to the two I-beam templates, thereby adjusting the unfolding distance of the device, making the device adaptable to different spacings between the two I-beam templates, and improving the applicability of the device.

[0051] The positioning mechanism includes a positioning block 37, a threaded rod 38, a self-locking nut 40, a circular groove 41, and a positioning groove 44. There are two positioning grooves 44, which are located on the top of the two support blocks 11. There are two positioning blocks 37, which are fixedly connected to the bottom of the fixed rod 12 and the sliding rod 13. The two positioning blocks 37 are in contact with the two positioning grooves 44. The circular groove 41 is located in one support block 11 and is connected to the positioning groove 44. The threaded rod 38 is inserted into the circular groove 41, and one end of the threaded rod 38 extends through to the side end of one positioning block 37. The self-locking nut 40 is threadedly connected to the circumferential surface of the threaded rod 38.

[0052] In this invention, the two positioning grooves 44 are provided to accommodate the insertion of two positioning blocks 37. The two positioning blocks 37, inserted into the two positioning grooves 44, achieve parallel positioning of the two support blocks 11, thereby achieving parallel positioning between the fixed base plate 1 and the movable base plate 2. The circular groove 41 is provided to accommodate one end of a threaded rod 38. The threaded rod 38, inserted into the circular groove 41, allows the sliding rod 13 to be detachably fixed to the top of one support block 11. The self-locking nut 40, through its threaded connection with the threaded rod 38, secures the screw... The threaded rod 38 is telescopically controlled to determine whether it is inserted into the circular groove 41. After adjusting the extension distance of the device, the self-locking nut 40 is rotated, and the self-locking nut 40 is bolted to the threaded rod 38, so that one end of the threaded rod 38 is inserted into the circular groove 41. This allows for fine-tuning and locking of the distance between the two support blocks 11, thereby enabling fine-tuning and locking of the distance between the two I-beam templates. This also allows for fine-tuning of the top spacing of the two I-beam templates, ensuring that the two I-beam templates are parallel and improving the quality of the concrete I-beams.

[0053] The telescopic mechanism includes a telescopic groove 3, a telescopic rod 4, a push spring 5, a first slide groove 6, and a first slider 7. The telescopic groove 3 is located on the side of the fixed base plate 1. The telescopic rod 4 slides between the inner walls of the telescopic groove 3. Multiple push springs 5 ​​are provided, with one end of each push spring 5 fixedly connected to the inner wall of the telescopic groove 3 and the other end of each push spring 5 connected to the telescopic rod 4. The first slide groove 6 is located at the bottom of the fixed base plate 1. The first slider 7 slides between the inner walls of the first slide groove 6 and is connected to the telescopic rod 4.

[0054] In this invention, the telescopic groove 3 is designed to accommodate the telescopic rod 4 and multiple push springs 5. The telescopic rod 4 is connected in parallel to the fixed base plate 1 and the movable base plate 2 by sliding support with the push springs 5. The multiple push springs 5 ​​are used to push the telescopic rod 4 to reset, so that the fixed base plate 1 and the movable base plate 2 are far apart, which facilitates the two positioning blocks 8 to be close to the inner surface of the two I-beam templates and ensures that the device is perpendicular to the two I-beam templates. The first sliding groove 6 is designed to accommodate the sliding of the first slider 7. The first slider 7 limits the maximum sliding distance of the telescopic rod 4 by sliding with the first sliding groove 6. When the distance between the fixed base plate 1 and the movable base plate 2 is changed, the telescopic rod 4 slides to the required distance in the telescopic groove 3 under the push of the multiple push springs 5. The sliding cooperation between the telescopic groove 3 and the telescopic rod 4 provides auxiliary support for adjusting the distance between the fixed base plate 1 and the movable base plate 2.

[0055] Both the fixed base plate 1 and the movable base plate 2 are fixedly connected to the top of a connecting block 9. The top of each connecting block 9 is rotatably connected to two connecting rods 10, which are rotatably connected by a hinge.

[0056] In this invention, two connecting blocks 9 are used to support two connecting rods 10, and the two connecting rods 10 are rotatably connected to ensure the connection between the fixed base plate 1 and the movable base plate 2.

[0057] Rubber pads 36 are fixedly connected to the bottom of both the fixed base plate 1 and the movable base plate 2.

[0058] In this invention, two rubber pads 36 are used to fill the gap between the fixed base plate 1, the movable base plate 2 and the two I-beam templates to ensure the stable fixation of the device.

[0059] The top of the card strip 15 has a scale line 42.

[0060] In this invention, the scale line 42 makes the change in distance between the fixed base plate 1 and the movable base plate 2 visible, which facilitates the adjustment of the distance between the fixed base plate 1 and the movable base plate 2.

[0061] The working process of the rotatable tie rod installed on the top of the I-beam formwork provided by this invention is as follows:

[0062] During installation, the two rubber pads 36 correspond to the tops of the two I-beam templates, positioning the top of the I-beam templates between the two positioning blocks 8 and the U-shaped frame 35. Using a hexagonal wrench, each of the two internal hexagonal slotted gears 24 is rotated individually. Each internal hexagonal slotted gear 24 meshes with the transmission gear 25, causing the transmission gear 25 to rotate. The transmission gear 25 then rotates the actuating spring 34, which in turn rotates the rotating shaft 43, causing the flipping block 23 to rotate to the bottom of the top plate of the I-beam template. The rotating assembly facilitates the rotation of the flipping block 23. Simultaneously, the rotating shaft 43 causes the coil spring 30 to retract and rotate, pushing the actuating spring 34 to... The movable pawl 32 engages with the ratchet 31 in one direction, preventing the rotating shaft 43 from rotating in the opposite direction and achieving one-way locking of the movable pawl 32. This prevents the device from detaching from the top of the two I-beam templates. When disassembly is required, the two movable pawls 32 are moved one by one. In each set of limiting components, the movable pawl 32 counteracts the push of the moving spring 34, releasing the lock on the moving spring 34. Under the reset push of the coil spring 30, the rotating shaft 43 is driven to rotate, which in turn drives the movable pawl 32 to rotate, causing the movable pawl 32 to reset. By resetting the two movable pawls 32 one by one, it is easy to release the device from the two I-beam templates, achieving quick disassembly of the device. It is a detachable device. The device allows for quick installation and disassembly, avoiding the use of butterfly buckles and screws, thus increasing installation speed and accelerating the assembly line operation of the beam fabrication platform. When there is an error in the distance between the two I-beam templates, pulling the tie rod 19 releases the engagement between the elastic block 18 and the locking strip 15, and pulling the sliding rod 13 allows the locking strip 15 to slide within the locking strip groove 14, changing the distance between the fixed base plate 1 and the movable base plate 2. This ensures that the fixed base plate 1 and the movable base plate 2 correspond to the two I-beam templates, allowing adjustment of the device's unfolding distance. This enables the device to adapt to different spacings between the two I-beam templates, increasing its applicability. When changing the spacing between the fixed base plate 1 and the movable base plate 2... Under the push of multiple push springs 5, the telescopic rod 4 slides within the telescopic groove 3 to the required distance. Through the sliding cooperation between the telescopic groove 3 and the telescopic rod 4, auxiliary support is provided for adjusting the distance between the fixed base plate 1 and the movable base plate 2. After the unfolding distance of the device is adjusted, the self-locking nut 40 is rotated. Through the bolt connection between the self-locking nut 40 and the threaded rod 38, one end of the threaded rod 38 is inserted into the circular groove 41, which finely adjusts and locks the distance between the two support blocks 11. This achieves fine adjustment and locking of the distance between the two I-beam templates, and fine adjustment of the top spacing of the two I-beam templates, ensuring that the two I-beam templates are parallel and improving the quality of the concrete I-beam.

[0063] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotatable tie rod mounted to the top of an I-beam form, characterized by, The utility model relates to a kind of adjustable and fixed bottom plate, including; Fixed bottom plate (1); Movable bottom plate (2) is arranged in one side of fixed bottom plate (1), and the movable bottom plate (2) is connected between fixed bottom plate (1) by telescopic mechanism, and the bottom of fixed bottom plate (1) and movable bottom plate (2) is fixedly connected with positioning clamping block (8), and the side end of fixed bottom plate (1) and movable bottom plate (2) is fixedly connected with U-shaped frame (35); Support block (11) is provided with two, two support block (11) is fixedly connected on the top of fixed bottom plate (1) and movable bottom plate (2), and adjusting mechanism and positioning mechanism are provided between two support block (11); Turnover clamping block (23) is provided with two, two turnover clamping block (23) are all installed between the inner wall of two U-shaped frames (35) by two rotating shafts (43);And Linkage mechanism is provided with two groups, two groups of linkage mechanism are arranged in the side end of fixed bottom plate (1) and movable bottom plate (2), and two groups of linkage mechanism are connected with two rotating shafts (43), to rotate two actuating pawls (32); Each group of linkage mechanism includes limiting component and rotating component, the limiting component is provided with two groups, two groups of limiting component are arranged in the side end of two U-shaped frames (35), and two groups of limiting component are connected with two rotating shafts (43), and the rotating component is provided with two groups, two groups of rotating component are arranged in the side end of two U-shaped frames (35), and two groups of rotating component are connected with two rotating shafts (43); The adjusting mechanism includes fixed rod (12), sliding rod (13), clamping strip slot (14), clamping strip (15), square slide pipe (17), elastic clamping block (18), pull rod (19), extrusion spring (20), second sliding groove (21) and second sliding block (22), the fixed rod (12) is rotatably connected on the top of one support block (11), the sliding rod (13) is rotatably connected on the top of another support block (11), the clamping strip slot (14) is opened in the side end of fixed rod (12), the square slide pipe (17) is fixedly connected on the bottom of fixed rod (12), the square slide pipe (17) is communicated with clamping strip slot (14), the clamping strip (15) is slid in clamping strip slot (14), the elastic clamping block (18) is slid in square slide pipe (17), the square slide pipe (17) is engaged with elastic clamping block (18), the pull rod (19) is inserted in the bottom of square slide pipe (17), the pull rod (19) is connected with elastic clamping block (18), the extrusion spring (20) is sleeved on the circumferential surface of pull rod (19), the bottom of extrusion spring (20) is connected with square slide pipe (17), the top of extrusion spring (20) is connected with elastic clamping block (18), the second sliding groove (21) is provided with two, two second sliding grooves (21) are opened on the inner wall of square slide pipe (17), the second sliding block (22) is provided with two, two second sliding blocks (22) are slid in two second sliding grooves (21), and two second sliding grooves (21) are connected with elastic clamping block (18).

2. A rotatable tie installed on the top of I-beam formwork according to claim 1, characterized in that, Each of the rotating assemblies comprises an internal hexagonal slot gear (24), a transmission gear (25) and a gear cover (26), the transmission gear (25) is fixedly connected to the side end of the rotating shaft (43), the internal hexagonal slot gear (24) is rotatably connected to the side end of the U-shaped frame (35), the gear cover (26) is sleeved on the outer surfaces of the internal hexagonal slot gear (24) and the transmission gear (25), and the gear cover (26) is connected with the U-shaped frame (35).

3. A rotatable tie bar for mounting to the top of an I-beam form according to claim 2, wherein, The limiting assembly comprises a ratchet cover (27), an oscillating groove (28), a coil spring cover (29), a coil spring (30), a ratchet (31), a pushing pawl (32), a fixed block (33) and a pushing spring (34), the ratchet (31) is fixedly connected to the side end of the rotating shaft (43), the fixed block (33) is fixedly connected to the side end of the U-shaped frame (35), the pushing pawl (32) is rotatably connected to the side end of the U-shaped frame (35), the pushing spring (34) is fixedly connected between the fixed block (33) and the pushing pawl (32), the ratchet cover (27) is sleeved on the outer surfaces of the ratchet (31), the pushing pawl (32), the fixed block (33) and the pushing spring (34), the oscillating groove (28) is arranged at the side end of the ratchet cover (27), the oscillating groove (28) corresponds to the pushing pawl (32), the coil spring cover (29) is fixedly connected to the side end of the ratchet cover (27), the coil spring cover (29) is in communication with the ratchet cover (27), the coil spring (30) is arranged between the inner walls of the coil spring cover (29), one end of the coil spring (30) is fixedly connected to the side end of the rotating shaft (43), and the other end of the coil spring (30) is fixedly connected to the inner walls of the coil spring cover (29).

4. A rotatable tie according to claim 3, wherein, The positioning mechanism comprises a positioning block (37), a threaded rod (38), a self-locking nut (40), a circular groove (41) and a positioning groove (44), the positioning groove (44) is provided with two, the positioning groove (44) is arranged at the top of the support block (11), the positioning block (37) is provided with two, the positioning block (37) is fixedly connected to the bottom of the fixed rod (12) and the sliding rod (13), the positioning block (37) is opposite to the positioning groove (44), the circular groove (41) is arranged in the support block (11), and the circular groove (41) is in communication with the positioning groove (44), the threaded rod (38) is inserted into the circular groove (41), and one end of the threaded rod (38) penetrates through the side end of the positioning block (37), and the self-locking nut (40) is threadedly connected to the circumferential surface of the threaded rod (38).

5. A rotatable tie according to claim 4, wherein, The telescopic mechanism comprises a telescopic slot (3), a telescopic rod (4), push springs (5), a first sliding slot (6) and a first sliding block (7), the telescopic slot (3) is arranged at the side end of the fixed bottom plate (1), the telescopic rod (4) slides between the inner walls of the telescopic slot (3), the push springs (5) are provided in plurality, the plurality of push springs (5) are arranged between the inner walls of the telescopic slot (3), one end of the plurality of push springs (5) is fixedly connected with the inner walls of the telescopic slot (3), the other end of the plurality of push springs (5) is connected with the telescopic rod (4), the first sliding slot (6) is arranged at the bottom of the fixed bottom plate (1), the first sliding block (7) slides between the inner walls of the first sliding slot (6), and the first sliding block (7) is connected with the telescopic rod (4).

6. A rotatable tie according to claim 5, wherein, The top of the fixed bottom plate (1) and the movable bottom plate (2) is fixedly connected with a connecting block (9), the top of the two connecting blocks (9) is rotatably connected with two connecting rods (10), and the two connecting rods (10) are rotatably connected through a hinge shaft.

7. A rotatable tie bar for mounting to the top of an I-beam form according to claim 6, wherein, The bottom of the fixed bottom plate (1) and the movable bottom plate (2) is fixedly connected with a rubber pad (36).

8. A rotatable tie bar for mounting to the top of an I-beam form according to claim 7, wherein, The top of the clamping strip (15) is provided with a scale line (42).

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