Reinforcement cage jig frame

By designing a positioning back frame and positioning components on the steel cage jig, and utilizing the cooperation of the limiting structure and positioning teeth, the problems of complex structure and high assembly difficulty of the steel cage jig were solved, achieving the effects of simplifying the structure and improving positioning accuracy.

CN224222623UActive Publication Date: 2026-05-12HUNAN WUXIN INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN WUXIN INTELLIGENT TECHNOLOGY CO LTD
Filing Date
2025-05-14
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The existing rebar cage frame structure is complex and difficult to assemble, which affects the positioning accuracy and binding efficiency of the rebar cage.

Method used

The design employs a positioning back frame and positioning components. The positioning back frame is provided with multiple limiting structures at intervals. The positioning components include positioning tooth blocks corresponding to the limiting structures. The positioning tooth blocks are rotatable and engage with the limiting structures for limiting, thus eliminating the need for a connecting plate and its installation mechanism.

Benefits of technology

The structure of the rebar cage frame was simplified, the assembly difficulty was reduced, the positioning accuracy and binding efficiency of the rebar cage were improved, and the hoisting operation was simplified.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of prefabricated part production, in particular to a reinforcement cage jig frame which comprises a positioning back frame and a positioning assembly. The positioning back frame is provided with a plurality of limiting structures at intervals in the first direction. The positioning assembly comprises a plurality of positioning tooth blocks in one-to-one correspondence with the limiting structures, the positioning tooth blocks are hinged to the positioning back frame so that the positioning tooth blocks can rotate in the second direction, and the first ends of the positioning tooth blocks are provided with bearing grooves used for bearing positioning steel bars; in the bearing state, the second ends of the positioning tooth blocks are matched with the corresponding limiting structures in a limiting mode. According to the reinforcement cage jig frame, the positioning assembly is directly arranged on the positioning back frame of the reinforcement cage jig frame, a connecting plate used for installing the positioning assembly and an installing mechanism of the connecting plate can be omitted, the structure of the reinforcement cage jig frame is simplified, the assembling difficulty is reduced, and the defects that in the prior art, a reinforcement cage positioning device is complex in structure and high in assembling difficulty are overcome.
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Description

Technical Field

[0001] This utility model relates to the field of precast component production technology, and in particular to a steel cage frame. Background Technology

[0002] When pre-tying the reinforcing cage, the spacing of the reinforcing bars needs to be positioned according to the design requirements to ensure the tying accuracy of the reinforcing cage.

[0003] In existing technologies, fastener mounting holes are typically made at the back frame of the rebar cage formwork to connect with a connecting plate. Multiple rotatable positioning teeth are spaced along the length of the connecting plate to position the rebar spacing during pre-tying and to allow for proper positioning when the rebar cage is hoisted after tying. However, in existing technologies, the back frame of the rebar cage formwork requires an additional connecting structure to fix the connecting plate, resulting in a complex structure and high assembly difficulty. Utility Model Content

[0004] This utility model provides a rebar cage frame to solve the defects of existing rebar cage positioning devices, which have complex structures and are difficult to assemble.

[0005] This utility model provides a steel cage frame, including: a positioning back frame and a positioning component.

[0006] The positioning back frame is provided with multiple limiting structures at intervals along a first direction; the positioning component includes multiple positioning teeth blocks that correspond one-to-one with the limiting structures. The positioning teeth blocks are hinged to the positioning back frame so that the positioning teeth blocks can rotate along a second direction. The first end of the positioning teeth block is provided with a support groove for supporting the positioning reinforcing bar. In the supporting state, the second end of the positioning teeth block is limited and engaged with the corresponding limiting structure.

[0007] According to the steel cage frame provided by this utility model, the limiting structure includes a limiting groove, and the limiting groove includes a bottom wall and a top wall; in the supporting state, the second end of the positioning tooth block is limited and engaged with the bottom wall and / or the top wall corresponding to the limiting groove.

[0008] According to the steel cage frame provided by this utility model, in the initial state, the second end of the positioning tooth block is limited and engaged with the bottom wall and / or the top wall corresponding to the limiting groove.

[0009] According to the steel cage frame provided by this utility model, the positioning back frame includes an outer side plate, a back frame support plate and an inner side plate. The outer side plate and the inner side plate are disposed opposite to each other on both sides of the back frame support plate, and the limiting groove is disposed on the outer side plate.

[0010] According to the steel cage frame provided by this utility model, the back support plate includes a support plate body and a plurality of connecting parts corresponding to the limiting grooves. The connecting parts are connected to the support plate body and pass through the corresponding limiting grooves. The positioning teeth are hinged to the connecting parts.

[0011] According to the steel cage frame provided by this utility model, the limiting groove further includes two side walls arranged opposite to each other, the outer edge of the connecting part cooperates with the bottom wall and / or the top wall, and the side of the connecting part cooperates with one of the side walls.

[0012] According to the steel cage frame provided by this utility model, the positioning tooth block is hinged to the support plate body.

[0013] According to the steel cage frame provided by this utility model, the back support plate, the outer side plate and the inner side plate are integrally formed.

[0014] According to the steel cage frame provided by this utility model, the limiting structure includes a limiting block; in the supporting state, the second end of the positioning tooth block is limited and engaged with the corresponding limiting block.

[0015] According to the steel cage frame provided by this utility model, the positioning component further includes a hinged connector, and the positioning tooth block is hinged to the positioning back frame through the hinged connector. The hinged connector is a hinge shaft or a hinge bolt.

[0016] The steel cage frame provided by this utility model can eliminate the need for the connecting plate and its installation mechanism for installing the positioning component by directly setting the positioning component on the positioning back frame of the steel cage frame. This simplifies the structure of the steel cage frame, reduces the assembly difficulty, and solves the defects of the existing steel cage positioning device, which has a complex structure and high assembly difficulty.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a steel cage frame provided in one embodiment of the present utility model.

[0020] Figure 2 yes Figure 1A magnified view of part A in the diagram.

[0021] Figure 3 A schematic diagram of the support state of the steel cage frame provided in one embodiment of this utility model.

[0022] Figure 4 This is a schematic diagram of the steel cage frame provided in the second embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the steel cage frame provided in the third embodiment of this utility model.

[0024] Figure 6 yes Figure 5 A magnified view of part B in the diagram.

[0025] Figure 7 This is a schematic diagram of the steel cage frame provided in the fourth embodiment of this utility model.

[0026] Figure 8 yes Figure 7 A magnified view of part C in the diagram.

[0027] Figure 9 This is a schematic diagram of the steel cage frame provided in Embodiment 5 of this utility model.

[0028] Figure 10 yes Figure 9 A magnified view of part of D.

[0029] Figure label:

[0030] 100. Positioning back frame; 110. Outer side plate; 120. Back frame support plate; 121. Support plate body; 122. Connecting part; 130. Inner side plate; 140. Limiting structure; 141. Limiting groove; 142. Limiting block; 200. Positioning assembly; 210. Positioning tooth block; 211. Support groove; 220. Hinge connector. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0034] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The following is combined Figures 1 to 10 This invention describes the steel cage frame provided by the present invention.

[0037] See Figures 1 to 3 As shown, the steel cage frame provided in this embodiment of the present invention includes: a positioning back frame 100 and a positioning component 200.

[0038] The positioning back frame 100 is provided with a plurality of limiting structures 140 at intervals along a first direction; the positioning assembly 200 includes a plurality of positioning teeth 210 corresponding one-to-one with the limiting structures 140. The positioning teeth 210 are hinged to the positioning back frame 100 so that the positioning teeth 210 can rotate along a second direction. The first end of the positioning teeth 210 is provided with a support groove 211 for supporting the positioning steel bar; in the supporting state, the second end of the positioning teeth 210 is limited and engaged with the corresponding limiting structure 140.

[0039] It should be noted that the "first direction" and "second direction" mentioned above can be referred to as... Figure 1 The arrows shown indicate the directions. The first direction can be understood as the length direction of the positioning back frame 100, and the second direction can be understood as vertical.

[0040] The steel cage frame provided by this utility model, by directly setting the positioning component 200 on the positioning back frame 100 of the steel cage frame, can eliminate the need for the connecting plate and its installation mechanism for installing the positioning component 200, simplify the structure of the steel cage frame, reduce the assembly difficulty, and solve the defects of the complex structure and high assembly difficulty of the steel cage positioning device in the prior art.

[0041] Specifically, the steel cage frame includes a positioning back frame 100 and a positioning component 200.

[0042] The positioning back frame 100 provides support for the rebar cage jig and is used to install the positioning assembly 200. The positioning back frame 100 has multiple limiting structures 140 spaced along its length. These limiting structures 140 cooperate with the positioning teeth 210 to limit the rotation angle of the positioning teeth 210, ensuring the rebar cage remains stable during pre-tying.

[0043] The limiting structure 140 can adopt various methods known in the prior art. For example, the hole-type limiting structure 140, by providing multiple holes on the positioning back frame 100, and providing corresponding protrusions or pins at the second end of the positioning tooth block 210, when the positioning tooth block 210 rotates to a certain angle, the protrusions or pins will be inserted into the corresponding holes, thereby limiting its rotation angle; the slot-type limiting structure 140, by providing multiple slots on the positioning back frame 100, and providing a protrusion at the second end of the positioning tooth block 210, when the positioning tooth block 210 rotates to a designated position, the protrusion will be engaged in the slot, ensuring that the positioning tooth block 210 is kept in the predetermined position; the protrusion-type limiting structure 140, by providing multiple protrusions on the positioning back frame 100, and having the second end of the positioning tooth block 210 in direct contact with these protrusions, thereby limiting the rotation range of the positioning tooth block 210.

[0044] Of course, in addition to the above methods, the limiting structure 140 may also adopt other methods known in the prior art, without any special limitation.

[0045] Multiple limiting structures 140 can be arranged on the positioning back frame 100 in a uniform or non-uniform manner, depending on the actual spacing of each steel bar in the steel cage, without any special restrictions.

[0046] The positioning component 200 is used to limit and fix the reinforcing bars to ensure that the reinforcing bars are arranged at a set spacing during the pre-tying process, thereby improving the tying accuracy. The positioning component 200 includes a plurality of positioning teeth 210 corresponding one-to-one with the limiting structure 140. The positioning teeth 210 are hinged to the positioning back frame 100 so that the positioning teeth 210 can rotate vertically. The first end of the positioning teeth 210 is provided with a support groove 211 for supporting the positioning reinforcing bars.

[0047] See Figure 3 As shown, during the pre-tying of the reinforcing bars, each positioning tooth 210 corresponds to one reinforcing bar in the reinforcing cage. In the supported state, because the reinforcing bar presses on the positioning tooth 210, the positioning tooth 210 and the limiting structure 140 engage in a limiting cooperation, preventing the positioning tooth 210 from continuing to rotate vertically, thus achieving the positioning function of the reinforcing bar. The support groove 211 can further limit the reinforcing bar, preventing it from sliding. The support groove 211 can be in various forms such as a rectangular groove or an arc groove, without any special limitation. In addition, since the positioning tooth 210 can rotate vertically, after the pre-tying of the reinforcing cage is completed, it can be directly lifted and hoisted away. When the reinforcing bar encounters the positioning tooth 210 above, it can be driven to rotate vertically to make way, thereby simplifying the hoisting operation.

[0048] See Figures 1 to 4As shown, the steel cage support frame provided by this utility model is suitable for positioning steel bars in various beam types, including small box girders, large box girders, T-beams, and various bridge beams. In specific implementation, the inclination angle of the positioning back frame 100 can be adaptively set according to the specifications of the steel cage, and no special limitation is made thereto.

[0049] See Figure 2 , Figure 6 and Figure 8 As shown, according to some embodiments of the present invention, the limiting structure 140 includes a limiting groove 141, which includes a bottom wall and a top wall; in the supporting state, the second end of the positioning tooth block 210 is limited and engaged with the bottom wall and / or top wall of the corresponding limiting groove 141.

[0050] By setting the limiting structure 140 in the form of a limiting groove 141, the design and manufacturing of the limiting structure 140 can be simplified while ensuring effective limiting cooperation with the positioning tooth block 210, thereby reducing the overall structural complexity of the positioning back frame 100.

[0051] Specifically, the limiting groove 141 provides a clear and stable limiting contact wall surface, allowing the positioning tooth block 210 to rotate within a specific angle range and provide a stable positioning function under support. Moreover, the limiting groove 141 can be processed by punching, laser cutting, etc., which is simpler to design and manufacture compared with the existing technology of welding positioning blocks on the positioning back frame 100.

[0052] Understandably, in the supported state, the second end of the positioning tooth block 210 engages with the bottom wall and / or top wall of the corresponding limiting groove 141. That is, in the supported state, the second end of the positioning tooth block 210 engages with either the bottom wall or the top wall of the corresponding limiting groove 141, or the second end of the positioning tooth block 210 engages with both the bottom wall and the top wall of the corresponding limiting groove 141. In specific implementation, the position of the positioning tooth block 210 engaging with the limiting groove 141 in the supported state can be controlled by controlling the height of the limiting groove 141.

[0053] As an example, in this embodiment, in the supporting state, the second end of the positioning tooth block 210 is limited and engaged with the top wall of the corresponding limiting groove 141.

[0054] See Figure 2 , Figure 6 and Figure 8 As shown, according to some embodiments of the present invention, in the initial state, the second end of the positioning tooth block 210 is limited and engaged with the bottom wall and / or top wall of the corresponding limiting groove 141.

[0055] In the initial state, by setting the second end of the positioning tooth block 210 to the bottom wall and / or top wall of the corresponding limiting groove 141 for limiting engagement, the positional stability of the positioning tooth block 210 before the pre-tying of the reinforcing cage can be guaranteed, making it easier to place the reinforcing bars on the corresponding positioning tooth block 210, thereby simplifying the placement operation of the reinforcing bars.

[0056] Specifically, in the initial state, the second end of the positioning tooth block 210 is engaged with the bottom wall and / or top wall of the corresponding limiting groove 141, and the operator can directly place the steel bar on the corresponding positioning tooth block 210 without having to move the limiting tooth block to the initial position, making the operation simple.

[0057] In practice, the initial position of the positioning tooth block 210 can be optimized by controlling the hinged connection between the positioning tooth block 210 and the positioning back frame 100. For example, a hinged shaft with low damping can be used to configure the positioning tooth block 210 and the positioning back frame 100 as a hinged connection. After the steel cage is lifted off the jig, the positioning tooth block 210 can return to its initial state by its own weight.

[0058] See Figure 2 , Figure 6 and Figure 8 As shown, according to some embodiments of the present invention, the positioning back frame 100 includes an outer side plate 110, a back frame support plate 120 and an inner side plate 130. The outer side plate 110 and the inner side plate 130 are disposed opposite to each other on both sides of the back frame support plate 120, and the limiting groove 141 is disposed on the outer side plate 110.

[0059] By setting the positioning back frame 100 to include an outer side plate 110, a back frame support plate 120 and an inner side plate 130, the structural strength of the positioning back frame 100 can be enhanced by using the back frame support plate 120, while the limiting groove 141 is set on the outer side plate 110 for easy installation.

[0060] The outer side plate 110, the back frame support plate 120 and the inner side plate 130 can be processed into the positioning back frame 110 by welding, bolting or integral installation, etc., and there are no special limitations on this.

[0061] Preferably, in this embodiment, the outer side plate 110, the back support plate 120, and the inner side plate 130 are integrally formed. During processing, the limiting groove 141 can be processed at the set position of the positioning back frame 110 first. After the limiting groove 141 is processed, the positioning back frame 110 can be processed into a shape including the outer side plate 110, the back support plate 120, and the inner side plate 130 by bending or other means. Its structure is simple and easy to process and manufacture. Alternatively, an H-shaped profile can be used directly as the positioning back frame 110, and the limiting groove 141 can be processed on the outward side wall of the profile.

[0062] See Figure 2 and Figure 6As shown, according to some embodiments of the present invention, the back support plate 120 includes a support plate body 121 and a plurality of connecting parts 122 corresponding to the limiting grooves 131. The connecting parts 122 are connected to the support plate body 121 and pass through the corresponding limiting grooves 131. The positioning tooth block 210 is hinged to the connecting part 122.

[0063] By providing multiple connecting portions 122 on the support plate body 121 that correspond one-to-one with the limiting grooves 141, the connecting portions 122 can provide installation space, allowing the positioning tooth block 210 and the positioning back frame 100 to be configured as hinged. That is, the back frame support plate 120 in the existing positioning back frame 100 is used as the mounting and fixing component of the positioning assembly 200.

[0064] Similarly, the back support plate 120 can also be processed by methods such as punching and laser cutting.

[0065] See Figure 2 and Figure 6 As shown, according to some embodiments of the present invention, the limiting groove 141 further includes two side walls arranged opposite to each other, the outer edge of the connecting part 122 cooperates with the bottom wall and / or the top wall, and the side of the connecting part 122 cooperates with one of the side walls.

[0066] By engaging the outer edge of the connecting part 122 with the bottom wall and / or the top wall, and engaging the side of the connecting part 122 with one of the side walls, the connecting part 122 can be limited by the bottom wall and / or the top wall and the side wall of the limiting groove 141, thereby improving the connection stability between the back support plate 120 and the positioning back frame 110.

[0067] It is understood that the outer edge of the connecting part 122 can cooperate with the bottom wall or the top wall of the limiting groove 141, or cooperate with both the bottom wall and the top wall of the limiting groove 141 at the same time.

[0068] Specifically, the outer edge of the connecting part 122 cooperates with the bottom wall and / or the top wall to restrict the movement of the connecting part 122 along the length direction of the positioning back frame 110, while the side of the connecting part 122 cooperates with one of the side walls to restrict the movement of the connecting part 122 along the width direction of the positioning back frame 110, thereby improving the connection stability between the back frame support plate 120 and the outer side plate 110 and the inner side plate 130, and preventing it from shaking during use.

[0069] See Figure 7 and Figure 8 As shown, according to some embodiments of the present invention, the positioning tooth block 210 is hinged to the support plate body 121.

[0070] By directly connecting the positioning tooth block 210 to the support plate body 121 in a hinged manner, there is no need to additionally provide a connecting part 122 on one side of the support plate body 121, which simplifies the structure of the back frame support plate 120 and facilitates its processing and manufacturing. At this time, the positioning tooth block 210 can be limited and fixed by the bottom wall of the limiting groove 141.

[0071] join Figure 9 and Figure 10 As shown, according to some embodiments of the present invention, the limiting structure 140 includes a limiting block 142; in the supporting state, the second end of the positioning tooth block 210 is limited and engaged with the corresponding limiting block 142.

[0072] By setting the limiting block 142 to limit the positioning tooth block 210, the positioning accuracy of the positioning tooth block 210 can be ensured, and the positional stability of the positioning tooth block 210 under the supporting state can be guaranteed. The limiting block 142 can be fixed to the positioning back frame 100 by welding, bolt connection or other methods.

[0073] It is readily understood that in some embodiments not shown, the limiting block 142 may also be combined with the limiting groove 141 to limit and fix the positioning tooth block 210. For example, the limiting block 142 may be located on the bottom wall or below the limiting groove 141 to ensure the positioning accuracy of the positioning tooth block 210 and its positional stability under the support state.

[0074] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 and Figure 10 As shown, according to some embodiments of the present invention, the positioning component 200 further includes a hinge connector 220, and the positioning tooth block 210 is hinged to the positioning back frame 100 through the hinge connector 220. The hinge connector 220 is a hinge shaft or a hinge bolt.

[0075] By setting the hinge connector 220 as a hinge shaft or a hinge bolt, the positioning tooth block 210 can be rotated vertically, and the assembly process of the positioning assembly 200 is simplified. The hinge shaft can be a pin, a perforated pin, etc. The hinge bolt is used in conjunction with a nut, utilizing the shank of the hinge bolt as the hinge connection shaft.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A steel cage frame, characterized in that, include: Positioning back frame (100), wherein the positioning back frame (100) is provided with a plurality of limiting structures (140) spaced apart along a first direction; The positioning component (200) includes a plurality of positioning teeth (210) corresponding one-to-one with the limiting structure (140). The positioning teeth (210) are hinged to the positioning back frame (100) so that the positioning teeth (210) can rotate in a second direction. The first end of the positioning teeth (210) is provided with a support groove (211) for supporting the positioning steel bar. In the supported state, the second end of the positioning tooth block (210) is engaged with the corresponding limiting structure (140).

2. The steel cage frame according to claim 1, characterized in that, The limiting structure (140) includes a limiting groove (141), and the limiting groove (141) includes a bottom wall and a top wall; In the supported state, the second end of the positioning tooth block (210) is limited and engaged with the bottom wall and / or the top wall of the corresponding limiting groove (141).

3. The steel cage frame according to claim 2, characterized in that, In the initial state, the second end of the positioning tooth block (210) is engaged with the bottom wall and / or the top wall of the corresponding limiting groove (141).

4. The steel cage frame according to claim 2, characterized in that, The positioning back frame (100) includes an outer side plate (110), a back frame support plate (120), and an inner side plate (130). The outer side plate (110) and the inner side plate (130) are disposed opposite to each other on both sides of the back frame support plate (120), and the limiting groove (141) is disposed on the outer side plate (110).

5. The steel cage frame according to claim 4, characterized in that, The back support plate (120) includes a support plate body (121) and a plurality of connecting parts (122) corresponding one-to-one with the limiting groove (141). The connecting parts (122) are connected to the support plate body (121) and pass through the corresponding limiting groove (141). The positioning tooth block (210) is hinged to the connecting part (122).

6. The reinforcing cage frame according to claim 5, characterized in that, The limiting groove (141) also includes two oppositely arranged side walls, the outer edge of the connecting part (122) cooperates with the bottom wall and / or the top wall, and the side of the connecting part (122) cooperates with one of the side walls.

7. The reinforcing cage frame according to claim 5, characterized in that, The positioning tooth block (210) is hinged to the support plate body (121).

8. The steel cage frame according to claim 4, characterized in that, The back support plate (120), the outer side plate (110), and the inner side plate (130) are integrally formed.

9. The reinforcing cage frame according to any one of claims 1 to 8, characterized in that, The limiting structure (140) includes a limiting block (142); In the supported state, the second end of the positioning tooth block (210) is engaged with the corresponding limiting block (142) for limiting.

10. The reinforcing cage frame according to any one of claims 1 to 8, characterized in that, The positioning assembly (200) further includes a hinge connector (220), the positioning tooth block (210) is hinged to the positioning back frame (100) through the hinge connector (220), and the hinge connector is a hinge shaft or a hinge bolt.