Pipe culvert reinforcing bar making jig

Abstract

The application discloses a kind of round pipe culvert reinforcing bar manufacturing jig, it is related to culvert manufacturing technical field, it includes frame, cross bar and disc round reinforcing bar winding mechanism. Cross bar is horizontally installed on frame, and disc round reinforcing bar winding mechanism is arranged on cross bar. The disc round reinforcing bar winding mechanism includes winding bar and rotating assembly, rotating assembly is rotatably arranged on cross bar, and two groups are symmetrically arranged on cross bar. Winding bar is detachably installed between two rotating assemblies, and multiple winding bars are arranged between two rotating assemblies around the rotation axis of cross bar, to form the circumferential winding surface for disc round reinforcing bar winding. Multiple clamping positions are arranged on the surface of winding bar, and the clamping positions on different winding bars correspond in circumferential direction, to form the circumferential winding route for disc round reinforcing bar embedding. The application can realize the efficient production of round pipe culvert reinforcing cage, ensure the consistency of reinforcing bar spacing and protective layer thickness, and improve production efficiency and reinforcing cage quality.

Description

Technical Field

[0001] This invention relates to the field of culvert manufacturing technology, and in particular to a jig for fabricating reinforcing bars for circular culverts. Background Technology

[0002] With the rapid development of infrastructure construction in my country, the requirements for standardized highway construction are constantly increasing, and the requirements for concrete quality are also rising accordingly. In highway subgrade drainage engineering, circular culverts are the most common type of culvert structure, and their sections are usually precast with reinforced concrete. During the precasting process of circular culverts, the control of the thickness of the concrete cover is crucial. To ensure the uniformity of the concrete cover thickness, it is necessary to ensure the consistency of the spacing between the inner and outer rings of reinforcing bars and the spacing between the upper and lower layers of reinforcing bars during the binding of the reinforcing cage, and to ensure that the entire reinforcing cage remains vertical, thereby making the thickness and strength of the concrete cover uniform throughout the precast pipe sections.

[0003] However, in existing construction sites, the fabrication of reinforcing bars for circular culverts typically involves three to four workers manually coiling the bars into multiple rings around a steel pipe support. Due to the limitations of this method, the spacing between the inner and outer layers of reinforcing bars, as well as the spacing between the upper and lower layers, is often difficult to control precisely. This results in the reinforcing cage failing to meet standardized requirements for verticality and protective layer thickness, thus affecting the quality and strength consistency of the final precast pipe sections. This deficiency in existing technology reveals a lack of effective structural control methods during the fabrication of circular culvert reinforcing cages, necessitating technological improvements to achieve precise spacing control and consistent protective layer thickness. Summary of the Invention

[0004] This invention discloses a jig for fabricating reinforcing bars for circular culverts, in order to improve the problem of low quality of reinforcing bars for circular culverts in related technologies.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A frame for manufacturing reinforcing bars for circular culverts includes a frame, a crossbar, and a coiled reinforcing bar winding mechanism. The crossbar is horizontally mounted on the frame, and the coiled reinforcing bar winding mechanism is mounted on the crossbar. The coiled reinforcing bar winding mechanism includes a winding rod and a rotating assembly. The rotating assembly is rotatably mounted on the crossbar, and two sets of the rotating assembly are spaced apart and symmetrically arranged on the crossbar. The winding rod is detachably mounted between the two sets of the rotating assembly, and multiple winding rods are spaced apart around the rotation axis of the crossbar between the two sets of the rotating assembly to form a circumferential winding surface for winding the coiled reinforcing bar. The surface of the winding rod is provided with multiple locking positions, and the locking positions on the multiple winding rods are circumferentially corresponding to each other to form a circumferential winding route for embedding the coiled reinforcing bar.

[0007] Preferably, the rotating assembly includes a rotating sleeve and a limiting rod. The rotating sleeve is rotatably sleeved on the crossbar. Limiting plates are provided on the crossbar at both ends of the rotating sleeve. The limiting plates are in contact with the ends of the rotating sleeve to limit the displacement of the rotating sleeve in the length direction of the crossbar.

[0008] The limiting rods are evenly spaced in the circumferential direction on the outer wall of the rotating sleeve, and the length direction of the limiting rods is perpendicular to the length direction of the crossbar. The winding rod is detachably mounted on the corresponding limiting rods on the two sets of rotating components.

[0009] Preferably, the limiting rod has a plurality of first insertion holes on the rod wall near its own end and along the length direction of the limiting rod, and the first insertion holes on two corresponding limiting rods correspond one-to-one. The first insertion holes are used for the end of the winding rod to be inserted.

[0010] Preferably, the winding rod is provided with multiple sets of snap-fit ​​components along its own length direction. Each snap-fit ​​component consists of two snap-fit ​​strips, and the snap-fit ​​position is formed between the two snap-fit ​​strips.

[0011] Preferably, the limiting rod is hollow inside, and an insertion part is rotatably provided inside the limiting rod. The first insertion hole is opened on the insertion part along the axial direction of the insertion part, and the cross-sectional shape of the first insertion hole is triangular or rectangular. An insertion rod is coaxially provided at the end of the winding rod, and the cross-sectional shape of the insertion rod is adapted to the cross-sectional shape of the first insertion hole, so that the winding rod and the insertion part can rotate synchronously when they are inserted and engaged. A first torsion spring is sleeved on the rod segment of the insertion part located inside the limiting rod. One end of the first torsion spring is connected to the outer wall of the insertion part, and the other end is connected to the inner wall of the limiting rod. The first torsion spring always has the tendency to make the insertion part and the winding rod rotate synchronously to a preset position. The preset position is configured such that the snap-fit ​​position on the winding rod is facing away from the crossbar.

[0012] Preferably, it also includes an adjustment mechanism, which is mounted on one of the sets of rotating components. The adjustment mechanism can drive multiple winding rods to rotate simultaneously so that the locking positions on the winding rods are facing the crossbar side.

[0013] Preferably, the adjustment mechanism includes a bracket, an active adjustment component, and a passive adjustment component. The bracket is installed on the side of one set of rotating components facing away from another set of rotating components. Multiple sets of passive adjustment components are provided on the bracket, and one set of passive adjustment components corresponds to one winding rod. One set of active adjustment components is provided on the bracket, and one set of active adjustment components is simultaneously connected to multiple sets of passive adjustment components. The active adjustment component has a switchable first state and a second state. In the first state, multiple passive adjustment components simultaneously drive multiple winding rods to rotate so that multiple locking positions are facing the crossbar side. In the second state, multiple first torsion springs simultaneously drive multiple winding rods to rotate so that multiple locking positions are facing away from the crossbar side.

[0014] Preferably, the bracket includes a hollow disc, an extension body, and a connecting end plate. The connecting end plate is disposed on the rod wall of the limiting rod away from the rotating sleeve. The extension body is connected to the connecting end plate, and one extension body is parallel to and directly opposite one limiting rod. The hollow disc is disposed between multiple extension bodies, and the extension direction of multiple extension bodies is consistent with the diameter direction of the hollow disc.

[0015] The extension body is hollow inside, and the interior of the hollow disk is connected to the interior of the extension body. The passive adjustment component is located inside the extension body and the hollow disk, and the active adjustment component is located on the hollow disk.

[0016] Preferably, the active adjustment assembly includes an active rotating roller, an extension rod, and a turntable. The active rotating roller is coaxially and rotatably disposed within the hollow disc. The extension rod is coaxially connected to the active rotating roller and is located outside the hollow disc. The turntable is coaxially disposed at the end of the extension rod away from the active rotating roller. The passive adjustment assembly includes a passive rotating roller, a second torsion spring, a winding reel, a connecting rope, and a guide rod. Multiple passive rotating rollers are rotatably disposed within the extension body along its length direction. Each passive rotating roller coaxially corresponds to one insertion part. A second insertion hole with a triangular or rectangular cross-sectional shape adapted to the insertion rod is axially opened on the passive rotating roller. The insertion rod can pass through the insertion part and be inserted into the second insertion hole. The winding reel is coaxially disposed on the passive rotating roller. The connecting rope includes a main rope body and branch rope bodies. Multiple branch rope bodies are provided on one main rope body, and one branch rope body corresponds to one winding reel. One end of the branch rope body is connected to the winding reel. The other end is connected to the main rope body. The guide rod is arranged parallel to the extension body. The guide rod has an axially penetrating guide channel for the main rope body to pass through. The end of the main rope body away from the branch rope body is connected to the outer peripheral wall of the active rotating roller. The second torsion spring is sleeved on the passive rotating roller. One end of the second torsion spring is connected to the inner wall of the extension body, and the other end is connected to the outer peripheral wall of the passive rotating roller. When the second torsion spring is in its natural state, the second insertion hole and the first insertion hole are always aligned. In the second state, the branch rope body is wound half a turn around the upper surface of the winding wheel. In the first state, the rope segment of the branch rope body is completely detached from the winding wheel, and at this time, the length direction of the branch rope body is parallel to the length direction of the extension body. In the first state, the switching process between the first and second states, and the second state, the connecting rope is always taut.

[0017] Preferably, the end of the winding rod is provided with a slot, the insertion rod is slidably inserted into the slot, and a spring is provided between the insertion rod and the inner end wall of the slot, the spring always having the tendency to push the insertion rod out of the slot.

[0018] The technical solution adopted in this invention can achieve the following beneficial effects:

[0019] This invention achieves efficient winding and precise positioning of coiled steel bars through a clever combination of a frame, crossbars, and a coiled steel bar winding mechanism. The coiled steel bar winding mechanism employs a design that combines a winding rod with a rotating component. Multiple locking points on the winding rod and a corresponding circumferential winding path ensure the stability and uniformity of the steel bar winding, thereby improving production quality.

[0020] The rotating assembly, through the structural arrangement of the rotating sleeve and limiting rod, ensures both flexible assembly and disassembly of the winding rod and axial positioning of the sleeve via the limiting plate, enhancing the overall structural reliability. Simultaneously, the design of the insertion rod on the winding rod, in conjunction with the first and second insertion holes, utilizes various adaptable insertion structures to ensure synchronous rotation and secure connection of the winding rod, preventing detachment or misalignment during winding. The first torsion spring automatically adjusts the winding rod to a preset position, optimizing operational convenience and further reducing manual adjustment workload.

[0021] Furthermore, the combined action of the adjustment mechanism and active and passive adjustment components enables synchronous adjustment of multiple winding rods, improving overall operational efficiency. The coordinated design of the connecting rope, winding wheel, and guide rod ensures reliability and precision during adjustment, resulting in smoother position switching of the winding rods. Overall, this invention offers significant advantages such as a reasonable structural design, high winding efficiency, convenient adjustment, and stable rebar winding quality, effectively improving the efficiency and finished product quality of circular culvert rebar fabrication. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0024] Figure 2 This is a partial cross-sectional view of an embodiment of this application;

[0025] Figure 3 yes Figure 2 Enlarged view of part A in the image;

[0026] Figure 4 This is a partial schematic diagram illustrating the winding rod according to an embodiment of this application;

[0027] Figure 5 This is a partial cross-sectional view of an embodiment of this application;

[0028] Figure 6 yes Figure 5 Enlarged view of part B in the image;

[0029] Figure 7 yes Figure 5 Enlarged view of section C in the image;

[0030] Figure 8 This is a partial schematic diagram illustrating the connection relationship between the active adjustment component and the passive adjustment component according to an embodiment of this application.

[0031] In the diagram: 100, frame; 200, crossbar; 210, limiting plate; 300, coiled steel bar winding mechanism; 310, winding rod; 311, insertion rod; 312, slot; 313, spring; 320, rotating assembly; 321, rotating sleeve; 322, limiting rod; 400, snap-fit ​​component; 410, snap-fit ​​strip; 420, snap-fit ​​position; 500, insertion part; 510, first insertion hole; 520, first torsion spring; 600, adjusting mechanism. 610, Support; 611, Hollow disc; 612, Extension body; 613, Connecting end plate; 620, Active adjustment assembly; 621, Active rotating roller; 622, Extension rod; 623, Turntable; 630, Passive adjustment assembly; 631, Passive rotating roller; 631a, Second insertion hole; 632, Second torsion spring; 633, Winding reel; 634, Connecting rope; 634a, Main rope body; 634b, Branch rope body; 635, Guide rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0033] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] The following is in conjunction with the appendix Figures 1 to 8 The present application provides a detailed description of a circular culvert steel reinforcement fabrication jig through specific embodiments and application scenarios.

[0035] Combination Figure 1 , Figure 2A frame for manufacturing reinforcing bars for circular culverts includes a frame 100, a crossbar 200, and a coiled reinforcing bar winding mechanism 300. The crossbar 200 is horizontally mounted on the frame 100, and the coiled reinforcing bar winding mechanism 300 is mounted on the crossbar 200. Exemplarily, the coiled reinforcing bar winding mechanism 300 includes a winding rod 310 and a rotating assembly 320. The rotating assembly 320 is rotatably mounted on the crossbar 200, and two sets of rotating assemblies 320 are spaced apart and symmetrically arranged on the crossbar 200. The winding rod 310 is detachably disposed between the two sets of rotating assemblies 320, and multiple winding rods 310 are spaced apart between the two sets of rotating assemblies 320 around the rotation axis of the crossbar 200 to form a circumferential winding surface for winding the coiled reinforcing bar. Multiple locking positions 420 are spaced apart on the surface of the winding rod 310, and the locking positions 420 on the multiple winding rods 310 correspond circumferentially to form a circumferential winding route for embedding the coiled reinforcing bar.

[0036] For example, the frame 100 is L-shaped, and the crossbars 200 are horizontally arranged on the frame 100 to form a U-shape. Furthermore, in order to improve the stability of the frame 100, diagonal braces are provided between the vertical and horizontal bars of the frame 100 to improve the overall stability of the frame 100.

[0037] Based on this, through the coordinated action of the frame 100, the crossbar 200, and the coiled rebar winding mechanism 300, precise control can be achieved during the fabrication of the circular culvert rebar cage. This effectively solves the problem of uneven spacing between inner and outer layers of rebar and between upper and lower layers of rebar, which exists in traditional manual rebar winding, and ensures the consistency of the protective layer thickness. Specifically, the coiled rebar winding mechanism 300 of this jig consists of a winding rod 310 and a rotating component 320. The arrangement of the rotating component 320 allows the winding rod 310 to rotate freely along its axis of rotation on the crossbar 200, and the spaced and symmetrical arrangement of the rotating component 320 helps to form a stable winding structure. Each winding rod 310 has multiple locking positions 420 on its surface, and the distribution of these locking positions 420 conforms to a circumferentially uniform design, allowing the coiled rebar to be precisely embedded into the locking positions 420 on the winding rod 310 during the winding process, thereby forming a stable and uniform circumferential winding surface.

[0038] This adjustable winding rod 310 structure ensures that the spacing and arrangement of each coil of reinforcing steel remain consistent, avoiding errors that occur during manual operation. Specifically, the winding path of the coiled reinforcing steel is determined by the snap-fit ​​positions 420 on multiple winding rods 310, and the uniform distribution of the snap-fit ​​positions 420 ensures precise control of the steel spacing. This structural design effectively avoids misalignment problems within the reinforcing cage and between upper and lower layers of reinforcing steel, thereby ensuring consistent protective layer thickness across all parts of the circular culvert reinforcing cage and further enhancing the structural strength and stability of the precast pipe sections.

[0039] Furthermore, the adjustability of the frame allows it to adapt to the fabrication needs of steel bars of different specifications. The configuration of the crossbars 200 and the winding rods 310 can be adjusted according to the actual construction situation, thereby meeting the requirements of different pipe section sizes and steel bar specifications. Compared with the traditional method of manually tying steel cages, this invention can greatly improve the efficiency and accuracy of steel cage fabrication, reduce the uncertainty of manual operation, ensure the uniformity and stability of the steel cage, and provide a solid foundation for subsequent concrete pouring.

[0040] In summary, the circular pipe culvert rebar fabrication jig of the present invention, through innovative structural design, provides an effective, precise and efficient method for fabricating rebar cages. It not only optimizes the quality control of rebar cages but also improves production efficiency, solving problems such as uneven spacing and inconsistent protective layer thickness in traditional manual methods, and has significant technical effects.

[0041] In some implementations, such as Figure 1 , Figure 2 As shown, the rotating assembly 320 includes a rotating sleeve 321 and a limiting rod 322. The rotating sleeve 321 is rotatably sleeved on the crossbar 200. Limiting plates 210 are provided on the crossbar 200 at both ends of the rotating sleeve 321. The limiting plates 210 are in contact with the ends of the rotating sleeve 321 to limit the displacement of the rotating sleeve 321 in the length direction of the crossbar 200.

[0042] For example, multiple limiting rods 322 are evenly spaced on the outer wall of the rotating sleeve 321, and the length direction of the limiting rods 322 is perpendicular to the length direction of the crossbar 200. The winding rod 310 is detachably mounted on the corresponding limiting rods 322 on the two sets of rotating components 320.

[0043] By incorporating a combination structure of a rotating sleeve 321 and a limiting rod 322 within the rotating assembly 320, the accuracy of the rebar winding and the stability of the device are further improved. Specifically, the rotating sleeve 321 is rotatably fitted onto the crossbar 200, and limiting plates 210 are provided at both ends of the crossbar 200. The contact between the limiting plates 210 and the ends of the rotating sleeve 321 effectively restricts the displacement of the rotating sleeve 321 along the length of the crossbar 200, ensuring that the rotating assembly 320 always remains in the predetermined working position. This design effectively avoids the problem of rebar winding position deviation caused by the axial displacement of the rotating sleeve 321 during the winding process, thereby improving the manufacturing accuracy of the rebar cage.

[0044] Furthermore, the limiting rods 322 are evenly spaced on the outer circumferential surface of the rotating sleeve 321, and their length direction is perpendicular to the length direction of the crossbar 200. This structural design allows the winding rod 310 to be stably installed between the corresponding limiting rods 322 of the two sets of rotating components 320. The uniform distribution of the limiting rods 322 ensures the arrangement accuracy and stability of the winding rods 310, resulting in a more uniform and consistent winding path for the reinforcing bars, further optimizing the spacing control effect of the inner and outer layers of reinforcing bars and the upper and lower layers of reinforcing bars in the reinforcing cage.

[0045] In some implementations, combined with Figure 2 , Figure 3 The limiting rod 322 has a plurality of first insertion holes 510 on the rod wall near its own end and along the length direction of the limiting rod 322. The first insertion holes 510 on the two corresponding limiting rods 322 correspond one to one. The first insertion holes 510 are used for the end of the winding rod 310 to be inserted.

[0046] For example, in combination Figure 4 The winding rod 310 is provided with multiple sets of snap-fit ​​parts 400 along its own length direction. Each snap-fit ​​part 400 is composed of two snap-fit ​​strips 410, and the snap-fit ​​position 420 is formed between the two snap-fit ​​strips 410.

[0047] When making circular culvert reinforcement bars, the coiled reinforcement bars can be released sequentially according to multiple snap-fit ​​positions 420 in the same circumferential direction. By setting multiple snap-fit ​​positions 420, the coiled reinforcement bars can be guided to wind in a predetermined direction, thereby improving the production efficiency of the reinforcement cage.

[0048] In some implementations, such as Figure 3 As shown, the limiting rod 322 is hollow inside, and an insertion part 500 is rotatably provided inside the limiting rod 322. A first insertion hole 510 is opened on the insertion part 500 along the axial direction of the insertion part 500, and the cross-sectional shape of the first insertion hole 510 is triangular or rectangular. An insertion rod 311 is coaxially provided at the end of the winding rod 310. The cross-sectional shape of the insertion rod 311 is adapted to the cross-sectional shape of the first insertion hole 510 so that the winding rod 310 and the insertion part 500 can rotate synchronously when they are inserted and engaged. For example, a first torsion spring 520 is sleeved on the rod segment of the insertion part 500 located within the limiting rod 322. One end of the first torsion spring 520 is connected to the outer wall of the insertion part 500, and the other end is connected to the inner wall of the limiting rod 322. The first torsion spring 520 always tends to cause the insertion part 500 and the winding rod 310 to rotate synchronously to a preset position. This preset position is configured such that the locking position 420 on the winding rod 310 is in a state facing away from the crossbar 200. It is worth noting that the accompanying drawings of this application only show the case where the cross-sectional shape of the first insertion hole 510 is rectangular.

[0049] Based on this, after inserting the insertion rod 311 at the end of the winding rod 310 into the first insertion hole 510, since the shape of the first insertion hole 510 is triangular or rectangular, the winding rod 310 can achieve synchronous rotation with the pre-insertion part 500. Under the torsion of the first torsion spring 520, the locking position 420 on the winding rod 310 is in a state facing away from the crossbar 200, which facilitates the winding of the coiled steel bar on multiple locking positions 420 in the circumferential direction, improving the winding efficiency.

[0050] In some implementations, combined with Figure 1 , Figure 2 as well as Figure 5 The system also includes an adjustment mechanism 600, which is mounted on one of the rotating components 320. The adjustment mechanism 600 can drive multiple winding rods 310 to rotate simultaneously, so that the locking positions 420 on the winding rods 310 are facing the crossbar 200. After the coiled steel bars are wound and welded to form a steel cage, the steel cage needs to be removed from the multiple winding rods 310. At this time, due to the obstruction of the locking pieces 400, it is not easy to remove the steel cage from the multiple winding rods 310. Based on this, by adjusting the mechanism 600, multiple winding rods 310 are rotated simultaneously, so that the locking positions 420 on the winding rods 310 are facing the crossbar 200. At this time, the position of the multiple locking pieces 400 will not interfere with the removal of the steel cage, that is, the finished steel cage can be removed from the multiple winding rods 310 along the length of the crossbar 200.

[0051] For example, the adjustment mechanism 600 includes a bracket 610, an active adjustment component 620, and a passive adjustment component 630. The bracket 610 is mounted on the side of one set of rotating components 320 facing away from another set of rotating components 320. Multiple sets of passive adjustment components 630 are provided on the bracket 610, and each set of passive adjustment components 630 corresponds to a winding rod 310. One set of active adjustment components 620 is provided on the bracket 610, and each set of active adjustment components 620 is simultaneously connected to multiple sets of passive adjustment components 630. The active adjustment component 620 has a switchable first state and a second state. When the active adjustment component 620 is in the first state, multiple passive adjustment components 630 simultaneously drive multiple winding rods 310 to rotate so that multiple locking positions 420 are all facing the side facing away from the crossbar 200. When the active adjustment component 620 is in the second state, multiple first torsion springs 520 simultaneously drive multiple winding rods 310 to rotate so that multiple locking positions 420 are all facing the side facing away from the crossbar 200. In this way, multiple winding rods 310 can be rotated simultaneously through the cooperation of the active adjustment component 620 and the passive adjustment component 630, thereby improving the ease of operation.

[0052] In some implementations, combined with Figure 5 , Figure 6 as well as Figure 7 The bracket 610 includes a hollow disc 611, an extension body 612, and a connecting end plate 613. The connecting end plate 613 is located on the rod wall of the limiting rod 322 away from the rotating sleeve 321. The extension body 612 is connected to the connecting end plate 613, and each extension body 612 is parallel to and directly opposite a limiting rod 322. The hollow disc 611 is located between multiple extension bodies 612, and the extension direction of the multiple extension bodies 612 is consistent with the diameter direction of the hollow disc 611. Furthermore, the extension body 612 is hollow inside, and the interior of the hollow disc 611 is connected to the interior of the extension body 612. A passive adjustment component 630 is located inside the extension body 612 and the hollow disc 611, and an active adjustment component 620 is located on the hollow disc 611. It is worth noting that the extension body 612 is also a hollow plate.

[0053] For example, the active adjustment assembly 620 includes an active rotating roller 621, an extension rod 622, and a turntable 623. The active rotating roller 621 is coaxially and rotatably disposed within the hollow disc 611. The extension rod 622 is coaxially connected to the active rotating roller 621 and is located outside the hollow disc 611. The turntable 623 is coaxially disposed at the end of the extension rod 622 away from the active rotating roller 621. For example, the turntable 623 has multiple protrusions and recesses circumferentially to facilitate hand control by the operator.

[0054] Furthermore, in combination Figure 3 , Figure 7 as well as Figure 8 The passive adjustment assembly 630 includes a passive rotating roller 631, a second torsion spring 632, a winding reel 633, a connecting rope 634, and a guide rod 635. Multiple passive rotating rollers 631 are provided rotatably within the extension body 612 along the length direction of the extension body 612, and each passive rotating roller 631 coaxially corresponds to an insertion part 500. A second insertion hole 631a with a triangular or rectangular cross-sectional shape is axially opened on the passive rotating roller 631 and is adapted to the insertion rod 311. The insertion rod 311 can pass through the insertion part 500 and be inserted into the second insertion hole 631a.

[0055] For example, the winding reel 633 is coaxially mounted on the passive rotating roller 631. The connecting rope 634 includes a main rope body 634a and branch rope bodies 634b. Multiple branch rope bodies 634b are provided on one main rope body 634a, and one branch rope body 634b corresponds to one winding reel 633. One end of the branch rope body 634b is connected to the winding reel 633, and the other end is connected to the main rope body 634a. For example, the end of the branch rope body 634b is welded or bonded to the outer peripheral wall surface of the winding reel 633. The guide rod 635 is parallel to the extension body 612. The guide rod 635 has an axially penetrating guide channel for the main rope body 634a to pass through. The end of the main rope body 634a away from the branch rope body 634b is connected to the outer peripheral wall of the active rotating roller 621.

[0056] For example, the second torsion spring 632 is sleeved on the passive rotating roller 631. One end of the second torsion spring 632 is connected to the inner wall of the extension body 612, and the other end is connected to the outer peripheral wall of the passive rotating roller 631. When the second torsion spring 632 is in its natural state, the second insertion hole 631a and the first insertion hole 510 are always aligned. When the active adjustment component 620 is in the second state, the branch rope 634b is wound half a turn around the upper surface of the winding wheel 633. When the active adjustment component 620 is in the first state, the rope segment of the branch rope 634b is completely detached from the winding wheel 633, and at this time, the length direction of the branch rope 634b is parallel to the length direction of the extension body 612. When the active adjustment component 620 is in the first state, during the switching process between the first and second states, and in the second state, the connecting rope 634 is always in a taut state.

[0057] Furthermore, in combination Figure 4 The winding rod 310 has an axially formed slot 312 at its end. The insertion rod 311 is slidably inserted into the slot 312. A spring 313 is provided between the insertion rod 311 and the inner wall of the slot 312. The spring 313 always tends to push the insertion rod 311 out of the slot 312. For example, a movable groove is provided at the end of the winding rod 310 and along its length. The movable groove is connected to the slot 312. A lever is vertically provided on the insertion rod 311. The surface of the lever facing away from the insertion rod 311 has multiple anti-slip stripes, which allows the operator to easily push the lever with their fingers to control the position of the insertion rod 311 in the slot 312.

[0058] Based on this, when it is necessary to install the winding rod 310 between the limiting rods 322, first push the lever by hand so that the insertion rod 311 overcomes the elastic force of the spring 313 and retracts at least partially into the slot 312. At this time, the length of the entire winding rod 310 will be relatively shortened, and it can be placed directly between the two limiting rods 322. Then, align the insertion rod 311 at the other end of the winding rod 310 with the first insertion hole 510 and insert it. Next, align the insertion rod 311 at the end that is retracted in the slot 312 with the first insertion hole 510 on the corresponding insertion part 500. Then release the lever. Under the elastic force of the spring 313, the insertion rod 311 at this end will pass through the first insertion hole 510 and then be inserted into the second insertion hole 631a in the passive rotating roller 631. Install all the winding rods 310 in the above manner, and all the winding rods 310 can be installed.

[0059] Once the winding rod 310 is installed in place, without external force, the first torsion spring 520 and the second torsion spring 632 will drive the winding rod 310 to rotate and position it so that the multiple locking positions 420 on the winding rod 310 are all facing away from the crossbar 200. In this state, the outer circumferential surface of the multiple winding rods 310 will form a circumferential winding route that allows the coiled steel bars to be inserted. Therefore, the operator can sequentially bend the coiled steel bars according to the circumferential winding route formed by these locking positions 420, so that the coiled steel bars can be used to shape the outer frame of the steel cage on the surface of the multiple parallel winding rods 310.

[0060] Once the rebar cage is fabricated, the locking position 420 will lock the cage, preventing it from being properly removed from the multiple winding rods 310. In this situation, the operator can manually rotate the turntable 623, causing the active rotating roller 621 to rotate. The active rotating roller 621 will then drive the end of the main rope 634a closest to it to move synchronously. Guided by the guide rod 635, the end of the main rope 634a furthest from the active rotating roller 621 will experience a downward vertical pull from the rotation of the active rotating roller 621. Simultaneously, this tension is applied directly to the branch rope 634b. Since part of the branch rope 634b is wrapped halfway around the upper surface of the winding reel 633, it moves vertically downwards under tension, causing the winding reel 633 to rotate 180° until it completely detaches from the reel. During this process, the passive rotating roller 631 also synchronously rotates the winding rod 310 180°, causing the locking position 420 to rotate from the side facing away from the crossbar 200 to the side facing the crossbar 200. After rotating 180°, the locking piece 400 and the locking position 420 completely avoid the external reinforcing cage, so the reinforcing cage is no longer restricted by the locking piece 400 and can be normally removed from the multiple winding rods 310.

[0061] After a steel cage is fabricated, the operator releases the turntable 623. Under the restoring torque of the first torsion spring 520 and the second torsion spring 632, the locking position 420 can automatically rotate to the side facing away from the crossbar 200 to facilitate the fabrication of the next steel cage.

[0062] It is worth noting that, generally, when fabricating a reinforcing cage, only the winding rod 310 needs to be installed in the two first insertion holes 510 furthest from the horizontal bar 200. The first insertion holes 510 in other positions are only used when fabricating other materials. This is because the fabricated reinforcing cage can be directly removed along the axis of the horizontal bar 200 from the two first insertion holes 510 furthest from the horizontal bar 200, while it cannot be removed from the other positions.

[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0064] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A jig for fabricating reinforcing bars for circular pipe culverts, characterized in that, It includes a frame (100), a crossbar (200), and a coiled steel bar winding mechanism (300). The crossbar (200) is horizontally mounted on the frame (100), and the coiled steel bar winding mechanism (300) is mounted on the crossbar (200). The coiled steel bar winding mechanism (300) includes a winding rod (310) and a rotating assembly (320). The rotating assembly (320) is rotatably mounted on the crossbar (200), and two sets of the rotating assemblies (320) are spaced apart and symmetrically arranged on the crossbar (200). The winding rod (310) is detachably mounted between the two sets of the rotating assemblies (320), and multiple winding rods (310) are spaced apart between the two sets of the rotating assemblies (320) around the rotation axis of the crossbar (200) to form a circumferential winding surface for winding the coiled steel bar. Multiple locking positions (420) are spaced apart on the surface of the winding rod (310), and the locking positions (420) on the multiple winding rods (310) are circumferentially corresponding to each other to form a circumferential winding route for embedding the coiled steel bar. The rotating assembly (320) includes a rotating sleeve (321) and a limiting rod (322). The rotating sleeve (321) is rotatably sleeved on the crossbar (200). Limiting plates (210) are provided on both ends of the crossbar (200) and located at both ends of the rotating sleeve (321). The limiting plates (210) are in contact with the ends of the rotating sleeve (321) to limit the displacement of the rotating sleeve (321) in the length direction of the crossbar (200). The limiting rods (322) are evenly spaced on the outer wall of the rotating sleeve (321), and the length direction of the limiting rods (322) is perpendicular to the length direction of the cross bar (200). The winding rod (310) is detachably mounted on the corresponding limiting rods (322) on the two sets of rotating components (320). The limiting rod (322) has a plurality of first insertion holes (510) on the rod wall near its own end and along the length direction of the limiting rod (322). The first insertion holes (510) on two corresponding limiting rods (322) correspond one to one. The first insertion holes (510) are used for the end of the winding rod (310) to be inserted. The limiting rod (322) is hollow inside, and an insertion part (500) is rotatably provided inside the limiting rod (322). The first insertion hole (510) is opened on the insertion part (500) along the axial direction of the insertion part (500), and the cross-sectional shape of the first insertion hole (510) is triangular or rectangular. The end of the winding rod (310) is coaxially provided with an insertion rod (311), and the cross-sectional shape of the insertion rod (311) is adapted to the cross-sectional shape of the first insertion hole (510) so that the winding rod (310) and the insertion part (500) can rotate synchronously when they are plugged in. The insertion part (500) is fitted with a first torsion spring (520) on the rod segment inside the limiting rod (322). One end of the first torsion spring (520) is connected to the outer wall of the insertion part (500) and the other end is connected to the inner wall of the limiting rod (322). The first torsion spring (520) always has the tendency to make the insertion part (500) and the winding rod (310) rotate synchronously to a preset position. The preset position is configured such that the snap-fit ​​position (420) on the winding rod (310) is in a state facing away from the crossbar (200).

2. The jig for fabricating reinforcing bars for a circular culvert according to claim 1, characterized in that, The winding rod (310) is provided with multiple sets of snap-fit ​​parts (400) along its own length direction. Each snap-fit ​​part (400) is composed of two snap-fit ​​strips (410), and the snap-fit ​​position (420) is formed between the two snap-fit ​​strips (410).

3. The steel reinforcement fabrication jig for a circular culvert according to claim 1, characterized in that, It also includes an adjustment mechanism (600) mounted on one of the sets of rotating components (320). The adjustment mechanism (600) can drive multiple winding rods (310) to rotate simultaneously so that the snap-fit ​​positions (420) on the winding rods (310) are in a state facing the crossbar (200).

4. The steel reinforcement fabrication jig for a circular culvert according to claim 3, characterized in that, The adjustment mechanism (600) includes a bracket (610), an active adjustment component (620), and a passive adjustment component (630). The bracket (610) is mounted on one side of one set of rotating components (320) facing away from another set of rotating components (320). Multiple sets of passive adjustment components (630) are provided on the bracket (610), and one set of passive adjustment components (630) corresponds to one winding rod (310). One set of active adjustment components (620) is provided on the bracket (610), and one set of active adjustment components (620) is simultaneously connected to multiple sets of passive adjustment components (630). The active adjustment component (620) has a switchable first state and a second state. When the active adjustment component (620) is in the first state, the multiple passive adjustment components (630) simultaneously drive the multiple winding rods (310) to rotate so that the multiple locking positions (420) are all facing the crossbar (200); When the active adjustment component (620) is in the second state, the plurality of first torsion springs (520) simultaneously drive the plurality of winding rods (310) to rotate so that the plurality of snap-fit ​​positions (420) are all facing away from the crossbar (200).

5. The reinforcing steel frame for circular culverts according to claim 4, characterized in that, The bracket (610) includes a hollow disc (611), an extension (612), and a connecting end plate (613). The connecting end plate (613) is disposed on the rod wall of the limiting rod (322) away from the rotating sleeve (321). The extension (612) is connected to the connecting end plate (613), and one extension (612) is parallel to and directly opposite one limiting rod (322). The hollow disc (611) is disposed between multiple extensions (612), and the extension direction of multiple extensions (612) is consistent with the diameter direction of the hollow disc (611). The extension body (612) is hollow inside, the interior of the hollow disk (611) is connected to the interior of the extension body (612), the passive adjustment component (630) is disposed inside the extension body (612) and the hollow disk (611), and the active adjustment component (620) is disposed on the hollow disk (611).

6. A jig for fabricating reinforcing bars for a circular culvert according to claim 5, characterized in that, The active adjustment assembly (620) includes an active rotating roller (621), an extension rod (622), and a turntable (623). The active rotating roller (621) is coaxially and rotatably disposed inside the hollow disc (611). The extension rod (622) is coaxially connected to the active rotating roller (621) and is located outside the hollow disc (611). The turntable (623) is coaxially disposed at the end of the extension rod (622) away from the active rotating roller (621). The passive adjustment assembly (630) includes a passive rotating roller (631), a second torsion spring (632), a winding reel (633), a connecting rope (634), and a guide rod (635). Multiple passive rotating rollers (631) are rotatably arranged within the extension body (612) along the length direction of the extension body (612), and each passive rotating roller (631) coaxially corresponds to one insertion part (500). A second insertion hole (631a) with a triangular or rectangular cross-sectional shape is axially opened on the passive rotating roller (631) and is adapted to the insertion rod (311). The insertion rod (311) can pass through the insertion part (500) and be inserted into the second insertion hole (631a). The winding reel (633) is coaxially mounted on the passive rotating roller (631). The connecting rope (634) includes a main rope body (634a) and branch rope bodies (634b). Multiple branch rope bodies (634b) are provided on one main rope body (634a), and one branch rope body (634b) corresponds to one winding reel (633). One end of the branch rope body (634b) is connected to the winding reel (633), and the other end is connected to the main rope body (634a). The guide rod (635) is parallel to the extension body (612). The guide rod (635) has an axially penetrating guide channel for the main rope body (634a) to pass through. The end of the main rope body (634a) away from the branch rope body (634b) is connected to the outer peripheral wall of the active rotating roller (621). The second torsion spring (632) is sleeved on the passive rotating roller (631). One end of the second torsion spring (632) is connected to the inner wall of the extension body (612), and the other end is connected to the outer peripheral wall of the passive rotating roller (631). When the second torsion spring (632) is in its natural state, the second insertion hole (631a) and the first insertion hole (510) are always aligned. When the active adjustment component (620) is in the second state, the rope segment (634b) is wound half a turn around the upper surface of the winding reel (633). When the active adjustment component (620) is in the first state, the rope segment of the rope segment (634b) is completely detached from the winding reel (633), and at this time, the length direction of the rope segment (634b) is parallel to the length direction of the extension body (612). The connecting rope (634) remains taut throughout the process of the active adjustment component (620) being in the first state, the state during the switching process between the first and second states, and the second state.

7. A jig for fabricating reinforcing bars for circular pipe culverts according to claim 6, characterized in that, The end of the winding rod (310) is provided with a slot (312) in the axial direction. The insertion rod (311) is slidably inserted into the slot (312). A spring (313) is provided between the insertion rod (311) and the inner end wall of the slot (312). The spring (313) always has the tendency to push the insertion rod (311) out of the slot (312).

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