Mould for rapid forming of segment reinforcement cage

By designing adjustable inner and outer frames and slot structures for the jig, the problems of low applicability and efficiency of traditional rebar cage forming equipment are solved, enabling rapid and efficient forming of rebar cages of different specifications.

CN224238159UActive Publication Date: 2026-05-15CHINA RAILWAY KEJIAN PREFABRICATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY KEJIAN PREFABRICATION TECH CO LTD
Filing Date
2025-06-04
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional steel cage forming equipment has low applicability and efficiency, making it difficult to apply to the production of steel cages of different specifications.

Method used

Design a rapid prototyping device that includes an inner frame and an outer frame. The inner frame provides basic support, while the outer frame adapts to steel cages of different widths through adjustable connecting frames and slot structures. The inner and outer frames cooperate through adjustable connectors and slots to achieve precise positioning and welding of main bars and stirrups.

Benefits of technology

It improves the versatility and applicability of steel cage forming, enhances production efficiency and flexibility, and is suitable for the production of steel cages of different specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a mould for rapid prototyping of a segment reinforcement cage, which comprises a mould inner frame and a mould outer frame, the mould inner frame comprises an inner bottom frame and a base frame located on the inner bottom frame, the base frame is formed by at least two transverse plates and at least two longitudinal plates which are crossed transversely and longitudinally, a plurality of first clamping grooves which are arranged at intervals in the transverse direction are formed in the transverse plates, and the first clamping grooves are connected with the inner bottom frame. The longitudinal plate is of an arc-shaped structure, and a plurality of second clamping grooves are formed in the longitudinal plate at intervals along the arc track of the longitudinal plate. The clamping fixture outer frame comprises two supporting frames, a connecting frame and two side plates, the two supporting frames are oppositely arranged and located on the two sides of the inner bottom frame in the transverse direction respectively, the two ends of the connecting frame are connected with the two supporting frames respectively, the length of the connecting frame is adjustable, and the two side plates are supported on the two supporting frames respectively so as to be located on the two sides of the base frame in the transverse direction respectively. The side plate is of an arc-shaped structure which is coaxial with the longitudinal plate, and a plurality of third clamping grooves which are formed along the arc track of the side plate at intervals are formed in the side plate.
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Description

Technical Field

[0001] This utility model relates to the field of steel cage forming technology, and more specifically, to a jig for rapid forming of segment steel cages. Background Technology

[0002] A steel reinforcement cage is a three-dimensional steel skeleton structure made of main bars and stirrups fixed by welding. Its main function is to bear tensile stress, improve the tensile strength and integrity of concrete members, and prevent concrete cracking. In tunnel shield construction, the segment reinforcement cage is a reinforcing skeleton structure used to reinforce precast concrete segments. Traditionally, the reinforcement bars are placed directly on the ground and welded together to form the segment reinforcement cage, which is relatively inefficient.

[0003] Existing technology discloses an arched formwork frame, comprising a base, side frames, an arc-shaped plate, a longitudinal bracket, and a transverse bracket. Two side frames are fixed to opposite sides of the base, the arc-shaped plate is fixed to the tops of the two side frames, the longitudinal bracket is located on the base between the two side frames, and the transverse bracket is fixed to the longitudinal bracket. The base, side frames, arc-shaped plate, and longitudinal bracket all extend longitudinally, while the transverse bracket extends transversely. Each of the arc-shaped plate, longitudinal bracket, and transverse bracket has several positioning slots spaced apart along its length. Specifically, reinforcing bars are aligned and placed according to the positioning slots on the arc-shaped plate, longitudinal bracket, and transverse bracket, and then welded to complete the forming of the reinforcing cage. However, this arched formwork frame is only suitable for the fabrication of reinforcing cages of fixed specifications, and its versatility and applicability are poor. Utility Model Content

[0004] The purpose of this invention is to provide a jig for rapid prototyping of steel cages for tunnel segments, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] This utility model provides a jig for rapid forming of steel cages for tunnel segments, comprising: an inner frame of the jig, including an inner base frame and a base frame located on the inner base frame, the base frame being formed by at least two horizontal plates and at least two vertical plates intersecting horizontally and vertically, the horizontal plates having a plurality of first slots arranged at intervals along the horizontal direction, the vertical plates having an arc-shaped structure, and having a plurality of second slots arranged at intervals along their arc trajectory; an outer frame of the jig, including a support frame, a connecting frame, and two side plates, the two support frames being provided, the two support frames being arranged opposite each other and respectively located on both sides of the inner base frame in the horizontal direction, the two ends of the connecting frame being connected to the two support frames respectively, and the length of the connecting frame being adjustable, the two side plates being respectively supported on the two support frames, so as to be located on both sides of the base frame in the horizontal direction, the side plates having an arc-shaped structure arranged coaxially with the vertical plates, and having a plurality of third slots arranged at intervals along their arc trajectory.

[0007] In some embodiments of this application, the support frame includes a plurality of support rods spaced apart longitudinally, and the side plate is supported on the top of each of the support rods; the connecting frame includes the same number of connecting rods as the support rods, the connecting rods are spaced apart longitudinally and are arranged in a one-to-one correspondence with each of the support rods; the connecting rod includes a first rod portion, a connecting screw and a second rod portion arranged sequentially in the transverse direction, the connecting screw is screwed to the first rod portion and the second rod portion respectively, and the first rod portion and the second rod portion are respectively connected to two opposite support rods in the two support frames.

[0008] In some embodiments of this application, a support rod of one of the support frames is rotatably connected to the first rod portion. When each of the support rods of the support frame rotates relative to the first rod portion, it can drive the side plate supported at its top to move laterally away from or closer to the base frame.

[0009] In some embodiments of this application, the first rod portion is provided with a limiting groove extending through its upper and lower sides, and one of the support rods of the support frame passes through the limiting groove, and the width of the limiting groove in the lateral direction is greater than the diameter of the support rod in the lateral direction; the outer frame of the fixture also includes a bolt assembly, the bolt assembly including a screw and two nuts, the screw passing through one longitudinal wall of the limiting groove, the support rod and the other longitudinal wall of the limiting groove in sequence, and the two nuts being screwed to both ends of the screw and located outside the limiting groove.

[0010] In some embodiments of this application, the inner base frame is provided with a positioning block extending longitudinally, and the positioning block is provided with a hook groove with an opening facing the inside of the inner base frame; the outer frame of the fixture also includes a snap-locking component and an opening and closing snap fastener, the snap-locking component is provided on the support rod, one end of the opening and closing snap fastener is connected to the snap-locking component, and the other end passes around the hook groove and is adjustablely connected to the snap-locking component to connect the inner base frame and the support rod.

[0011] In some embodiments of this application, the inner base frame includes a base frame and a plurality of vertical rods erected on the base frame. Each of the vertical rods is evenly distributed on both sides of the base frame in the horizontal direction and serves to support the base frame. Two support frames are located outside the base frame and are respectively located on both sides of the base frame in the horizontal direction. The connecting frame is located above the base frame. In some embodiments of this application, the horizontal plate includes a horizontal plate body, a plurality of positioning cards, and fasteners of the same number as the positioning cards. The horizontal plate body has positioning grooves extending in the horizontal direction. The positioning cards are spaced apart in the horizontal direction. The fasteners pass through the positioning cards and are adjustablely fixed within the positioning grooves. Each positioning card has a first slot.

[0012] In some embodiments of this application, the outer frame of the fixture further includes a top plate, which is detachably connected to the two side plates and located above the base frame. A fourth slot is provided on the lower side of the top plate.

[0013] In some embodiments of this application, the inner frame of the fixture further includes two limiting end plates, which are respectively located on both sides of the longitudinal plate in the longitudinal direction and are rotatably connected to the inner base frame. The limiting end plates rotate relative to the inner base frame to move closer to or further away from the longitudinal plate in the longitudinal direction.

[0014] In some embodiments of this application, the inner frame of the fixture further includes a limiting end plate bracket, the limiting end plate bracket including connecting plates that are respectively connected to the two ends of the limiting end plate in the transverse direction, and the two connecting plates are respectively connected to the inner base frame by bolts.

[0015] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects:

[0016] In the jig for rapid prototyping of steel cages for tunnel segments according to this embodiment of the invention, the inner frame of the jig provides core positioning and support for the forming of the steel cage. The inner bottom frame of the inner frame provides basic support for the base frame above it. The first slot of the horizontal plate and the second slot of the vertical plate in the base frame can respectively position the main reinforcement bars and stirrups of the steel cage. The third slot of the side plate in the outer frame of the jig is used to position the stirrups laterally to confirm the width of the steel cage. Further, the first slot of the horizontal plate is subsequently used for verification and limiting welding of the main reinforcement bars, and the second slot of the vertical plate and the third slot of the side plate are used together to verify and limit welding of the stirrups. Since the two side plates are supported on two support frames respectively, and the two support frames are connected by an adjustable-length connecting frame, specifically, by adjusting the length of the connecting frame, the lateral spacing between the two horizontal plates located on the two support frames can be increased or decreased, making the rapid prototyping jig applicable to the production of steel cages of different widths, improving its versatility and applicability. Attached Figure Description

[0017] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0018] Figure 1 This is a schematic diagram of the structure of a jig for rapid prototyping of steel reinforcement cages for tunnel segments, according to an exemplary embodiment.

[0019] Figure 2 yes Figure 1 Detailed structural diagram.

[0020] Figure 3 yes Figure 1 A structural diagram from another perspective.

[0021] Figure 4 yes Figure 1 A schematic diagram of the specific structure of the outer frame of the jig.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1. Inner frame of the fixture; 11. Inner base frame; 111. Base frame; 112. Vertical rod; 113. Positioning block; 12. Base frame; 121. Horizontal plate; 1211. Horizontal plate body; 1212. Positioning card; 1213. Fastener; 1214. Positioning groove; 1215. First slot; 122. Vertical plate; 1221. Second slot; 13. Limiting end plate; 14. Limiting end plate bracket; 141. Connecting plate;

[0024] 2. Outer frame of the fixture; 21. Support frame; 211. Support rod; 22. Connecting frame; 221. Connecting rod; 2211. First rod part; 2212. Connecting screw; 2213. Second rod part; 2214. Limiting groove; 23. Side plate; 231. Third slot; 24. Bolt assembly; 25. Buckle lock; 26. Opening and closing buckle; 27. Top plate; 271. Fourth slot;

[0025] X represents the horizontal direction; Y represents the vertical direction. Detailed Implementation

[0026] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0027] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0028] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0029] Please see Figures 1 to 3The jig for rapid forming of steel cage for pipe segments provided in one embodiment of the present invention mainly includes an inner jig frame 1 and an outer jig frame 2. The inner jig frame 1 includes an inner base frame 11 and a base frame 12 located on the inner base frame 11. The base frame 12 is formed by at least two horizontal plates 121 and at least two vertical plates 122 intersecting horizontally and vertically. The horizontal plates 121 are provided with a plurality of first slots 1215 arranged at intervals along the horizontal direction X. The vertical plates 122 have an arc-shaped structure and are provided with a plurality of second slots 1221 arranged at intervals along their arc trajectory. The outer frame 2 of the fixture includes a support frame 21, a connecting frame 22, and two side plates 23. There are two support frames 21, which are arranged opposite each other and located on both sides of the inner base frame 11 in the transverse X direction. The two ends of the connecting frame 22 are connected to the two support frames 21 respectively, and the length of the connecting frame 22 is adjustable. The two side plates 23 are supported on the two support frames 21 respectively, and are located on both sides of the base frame 12 in the transverse X direction. The side plates 23 have an arc-shaped structure arranged coaxially with the longitudinal plate 122, and have several third slots 231 arranged at intervals along their arc trajectory.

[0030] In the jig for rapid prototyping of steel reinforcement cages for tunnel segments according to this embodiment of the present invention, the inner frame 1 of the jig provides core positioning and support for the prototyping of the steel reinforcement cage. The inner base frame 11 of the inner frame 1 provides basic support for the base frame 12 above it. The first slot 1215 of the horizontal plate 121 and the second slot 1221 of the vertical plate 122 in the base frame 12 can respectively position the main reinforcement bars and stirrups of the steel reinforcement cage. The third slot 231 of the side plate 23 in the outer frame 2 of the jig is used to position the stirrups laterally (X) to confirm the width of the steel reinforcement cage. Further, the first slot 1215 of the horizontal plate 121 is subsequently used for verification and limiting welding of the main reinforcement bars, and the second slot 1221 of the vertical plate 122 and the third slot 231 of the side plate 23 are used together to verify and limit welding of the stirrups. Since the two side plates 23 are respectively supported on the two support frames 21, and the two support frames 21 are connected by a length adjustable connecting frame 22, specifically, by adjusting the length of the connecting frame 22, the lateral X-spacing between the two horizontal plates 121 located on the two support frames 21 can be increased or decreased, so that the rapid prototyping jig can be used to manufacture steel cages of different widths, thereby improving its versatility and applicability.

[0031] Please see Figure 2 and Figure 4In a specific embodiment, the support frame 21 includes a plurality of support rods 211 spaced apart along the longitudinal direction Y, and the side plate 23 is supported on the top of each support rod 211. The connecting frame 22 includes the same number of connecting rods 221 as the support rods 211, each connecting rod 221 spaced apart along the longitudinal direction Y and corresponding to each support rod 211. The connecting rod 221 includes a first rod portion 2211, a connecting screw 2212 and a second rod portion 2213 arranged sequentially along the transverse direction X. The connecting screw 2212 is screwed to the first rod portion 2211 and the second rod portion 2213 respectively, and the first rod portion 2211 and the second rod portion 2213 are respectively connected to two opposing support rods 211 in the two support frames 21.

[0032] This paper provides a specific and feasible implementation method for the specific structure of the support frame 21 and the connecting frame 22 in the outer frame 2 of the fixture, as well as the structural cooperation between the support frame 21 and the connecting frame 22. Specifically, the length of the connecting rod 221 is adjusted by adjusting the length of the connecting screw 2212 screwed into the first rod part 2211 and / or the second rod part 2213. By adjusting the length of each connecting rod 221, the overall length of the connecting frame 22 is adjustable. The screw connection method has the advantages of reliable connection and convenient adjustment.

[0033] In a specific embodiment, the support rod 211 of one of the support frames 21 is rotatably connected to the first rod portion 2211. When each support rod 211 of the support frame 21 rotates relative to the first rod portion 2211, it can drive the side plate 23 supported at its top to move away from or closer to the base frame 12 in the lateral X direction. This facilitates the positioning, placement, binding, and welding of the main reinforcement bars and stirrups, thereby improving the flexibility and convenience of the steel cage manufacturing process.

[0034] Please see Figure 2 In one embodiment where the support rod 211 of one of the support frames 21 is rotatably connected to the first rod portion 2211, the first rod portion 2211 has a limiting groove 2214 extending through its upper and lower sides. The support rod 211 of one of the support frames 21 passes through the limiting groove 2214, and the width of the limiting groove 2214 in the transverse X direction is greater than the diameter of the support rod 211 in the transverse X direction. The outer frame 2 of the fixture also includes a bolt assembly 24, which includes a screw and two nuts. The screw passes sequentially through one groove wall of the limiting groove 2214 in the longitudinal Y direction, the support rod 211, and the other groove wall of the limiting groove 2214 in the longitudinal Y direction. The two nuts are screwed to both ends of the screw and are located outside the limiting groove 2214.

[0035] Through the coordinated cooperation between the limiting groove 2214, the support rod 211 and the bolt assembly 24, a rotatable connection between the support rod 211 and the first rod part 2211 can be achieved, and the two groove walls of the limiting groove 2214 in the transverse X direction can limit the range of rotation of the support rod 211, making it easy to adjust.

[0036] In a further embodiment, the inner base frame 11 is provided with a positioning block 113 extending longitudinally along the Y direction, and the positioning block 113 is provided with a groove with an opening facing the inside of the inner base frame 11. The outer frame 2 of the fixture also includes a latching lock 25 and an opening and closing latch 26. The latching lock 25 is provided on the support rod 211, and one end of the opening and closing latch 26 is connected to the latching lock 25, while the other end passes around the groove and is adjustablely connected to the latching lock 25 to connect the inner base frame 11 and the support rod 211. Through the coordinated cooperation between the positioning block 113, the latching lock 25, and the opening and closing latch 26, it is ensured that the support frame 21 can always be stably connected to the inner base frame 11 in different states to maintain a fixed state, thereby improving the reliability of the overall structure.

[0037] It is conceivable that the support rod 211 of the other support frame 21 is rotatably connected to the first rod portion 2211. For the specific cooperation method, please refer to the design of the above embodiment, which will not be repeated here. Specifically, the support rods 211 of the two support frames 21 can rotate in the lateral X direction away from the base frame 12, so that the outer frame 2 of the fixture is in an outward-opening state, which further improves the overall flexibility and convenience.

[0038] In a specific embodiment, the inner base frame 11 includes a base frame 111 and a plurality of vertical rods 112 erected on the base frame 111. Each vertical rod 112 is evenly distributed on both sides of the base frame 111 in the horizontal direction X and is used to support the base frame 12. Both support frames 21 are located outside the base frame 111 and are respectively located on both sides of the base frame 111 in the horizontal direction X. The connecting frame 22 is located above the base frame 111.

[0039] The rigid support frame formed by the base frame 111 and the vertical rod 112 ensures that it can be stably placed on the ground or platform, and provides stable support for the base frame 12, thereby ensuring the stability of the rebar cage fabrication process. The support frame 21 is located outside the base frame 111, and the connecting frame 22 is located above the base frame 111, which can avoid interference between the outer base frame and the inner base frame 11, and the two can form a nested structure, further improving the stability of the overall structure. On the other hand, the connecting frame 22 being located above the base frame 111 also facilitates the operator's length adjustment.

[0040] Specifically, during assembly, the two support frames 21 are first pushed into the inner base frame 11 from both sides of the transverse X, so that the first rod 2211 and the second rod 2213 are located above the base frame 111. Then, the first rod 2211 and the second rod 2213 are connected by screws to complete the assembly between the inner frame 1 and the outer frame 2 of the fixture.

[0041] In this embodiment, the positioning block 113 is disposed on the vertical rod 112.

[0042] In a specific embodiment, the horizontal plate 121 includes a horizontal plate body 1211, a plurality of positioning cards 1212, and a number of fasteners 1213 equal to the number of positioning cards 1212. The horizontal plate body 1211 has a positioning groove 1214 extending along the horizontal X. The positioning cards 1212 are distributed at intervals along the horizontal X. The fasteners 1213 pass through the positioning cards 1212 and are fixed in the positioning groove 1214 in an adjustable position. The positioning cards 1212 have a first slot 1215.

[0043] By adjusting the position of the fastener 1213 in the positioning groove 1214, the position of the positioning card 1212 relative to the horizontal plate body 1211 can be adjusted, thus making it suitable for the manufacture of steel cages of different specifications.

[0044] In this embodiment, the fastener 1213 is a bolt. On the one hand, according to actual usage requirements, the engagement between the fastener 1213, the positioning card 1212, and the positioning groove 1214 can be disengaged to remove the positioning card 1212 from the horizontal plate body 1211, and then positioning cards 1212 with different sizes of first slots 1215 can be installed to adapt to the usage requirements of steel bars of different thicknesses. On the other hand, the number of positioning cards 1212 can be increased or decreased to meet different production needs.

[0045] It should be noted that the longitudinal plate 122 and the side plate 23 are designed with reference to the specific structure of the transverse plate 121, which will not be elaborated here, further improving the applicability of the fixture.

[0046] Please see Figures 1 to 3 In a specific embodiment, the outer frame 2 of the jig also includes a top plate 27, which is detachably connected to the two side plates 23 by means of screws or other methods, and is located above the base frame 12. A fourth slot 271 is provided on the lower side of the top plate 27. The top plate 27 is used to provide upper positioning for the main reinforcement bars and can limit the processing thickness of the reinforcement cage. In specific application scenarios, different specifications of top plates 27 can be selected according to actual needs.

[0047] In a specific embodiment, the inner frame 1 of the fixture also includes two limiting end plates 13. The two limiting end plates 13 are respectively located on both sides of the longitudinal plate 122 in the longitudinal direction Y, and are rotatably connected to the inner base frame 11. The limiting end plates 13 can rotate relative to the inner base frame 11 to move closer to or further away from the longitudinal plate 122 in the longitudinal direction Y. The limiting end plates 13 can limit the arc length of the main ribs according to actual usage requirements, avoiding unevenness of the main ribs, thereby improving processing efficiency and accuracy.

[0048] In this embodiment, the inner frame 1 of the fixture also includes a limiting end plate bracket 14. The limiting end plate bracket 14 includes connecting plates 141 that are respectively connected to the two ends of the limiting end plate 13 in the transverse X direction. The two connecting plates 141 are respectively connected to the inner base frame 11 by bolts. By switching the locked and unlocked states of the bolts, rotating the two connecting plates 141 drives the limiting end plate 13 to rotate. The structure is relatively simple, and the operation is simple and easy to implement.

[0049] While the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A jig for rapid forming of steel reinforcement cages for tunnel segments, characterized in that, include: The inner frame of the fixture includes an inner base frame and a base frame located on the inner base frame. The base frame is formed by at least two horizontal plates and at least two vertical plates intersecting horizontally and vertically. The horizontal plates are provided with a plurality of first slots arranged at intervals along the horizontal direction. The vertical plates have an arc-shaped structure and are provided with a plurality of second slots arranged at intervals along their arc trajectory. The outer frame of the fixture includes a support frame, a connecting frame, and two side plates. There are two support frames, which are arranged opposite each other and located on both sides of the inner base frame in the transverse direction. The two ends of the connecting frame are connected to the two support frames respectively, and the length of the connecting frame is adjustable. The two side plates are supported on the two support frames respectively, and are located on both sides of the base frame in the transverse direction. The side plates have an arc-shaped structure arranged coaxially with the longitudinal plate, and have a number of third slots arranged at intervals along their arc trajectory.

2. The jig for rapid forming of segment reinforcement cages according to claim 1, characterized in that, The support frame includes a plurality of support rods spaced apart along the longitudinal direction, and the side plate is supported on the top of each of the support rods; The connecting frame includes the same number of connecting rods as the support rods, with each connecting rod distributed longitudinally at intervals and corresponding to each of the support rods; The connecting rod includes a first rod portion, a connecting screw, and a second rod portion arranged sequentially in the transverse direction. The connecting screw is screwed to the first rod portion and the second rod portion respectively. The first rod portion and the second rod portion are respectively connected to two opposing support rods in the two support frames.

3. The jig for rapid forming of segment reinforcement cages according to claim 2, characterized in that, One of the support rods of the support frame is rotatably connected to the first rod portion. When each of the support rods of the support frame rotates relative to the first rod portion, it can drive the side plate supported at its top to move laterally away from or towards the base frame.

4. The jig for rapid forming of segment reinforcement cages according to claim 3, characterized in that, The first rod has a limiting groove that extends through its upper and lower sides, and one of the support rods of the support frame passes through the limiting groove, and the width of the limiting groove in the lateral direction is greater than the diameter of the support rod in the lateral direction. The outer frame of the fixture also includes a bolt assembly, which includes a screw and two nuts. The screw passes sequentially through one longitudinal wall of the limiting groove, the support rod, and another longitudinal wall of the limiting groove. The two nuts are screwed to both ends of the screw and are located outside the limiting groove.

5. The jig for rapid forming of segment reinforcement cages according to claim 4, characterized in that, The inner base frame is provided with a positioning block extending longitudinally, and the positioning block is provided with a hook groove with an opening facing the inside of the inner base frame; The outer frame of the fixture also includes a latching lock and an opening and closing latch. The latching lock is located on the support rod. One end of the opening and closing latch is connected to the latching lock, and the other end passes around the hook groove and is adjustablely connected to the latching lock to connect the inner base frame and the support rod.

6. The jig for rapid forming of segment reinforcement cages according to claim 1, characterized in that, The inner base frame includes a base frame and several vertical rods erected on the base frame. Each of the vertical rods is evenly distributed on both sides of the base frame in the horizontal direction and is used to support the base frame. Both of the aforementioned support frames are located outside the base frame and are respectively located on both sides of the base frame in the horizontal direction, while the connecting frame is located above the base frame.

7. The jig for rapid forming of segment reinforcement cages according to claim 1, characterized in that, The horizontal plate includes a horizontal plate body, a plurality of positioning cards and fasteners of the same number as the positioning cards. The horizontal plate body has a positioning groove extending laterally. The positioning cards are distributed at intervals laterally. The fasteners pass through the positioning cards and are fixed in the positioning grooves in an adjustable position. The positioning cards have a first card slot.

8. The jig for rapid forming of segment reinforcement cages according to claim 1, characterized in that, The outer frame of the fixture also includes a top plate, which is detachably connected to the two side plates and located above the base frame. A fourth slot is provided on the lower side of the top plate.

9. The jig for rapid forming of segment reinforcement cages according to claim 1, characterized in that, The inner frame of the fixture also includes two limiting end plates, which are located on both sides of the longitudinal plate in the longitudinal direction and are rotatably connected to the inner base frame. The limiting end plates can rotate relative to the inner base frame to move closer to or further away from the longitudinal plate in the longitudinal direction.

10. The jig for rapid forming of segment reinforcement cages according to claim 1, characterized in that, The inner frame of the fixture also includes a limiting end plate bracket, which includes connecting plates that are connected to the two ends of the limiting end plate in the lateral direction. The two connecting plates are respectively connected to the inner base frame by bolts.