Channel steel positioning frame for foundation short column steel reinforcement framework

Abstract

The invention provides a channel steel positioning frame for a foundation short column steel reinforcement framework, and belongs to the technical field of channel steel positioning frames, the channel steel positioning frame comprises a base frame, each side edge of the base frame is provided with a plurality of limiting units evenly distributed along the side edge, and each limiting unit comprises a mounting seat, a positioning head, an elastic structure, a sliding part and an opening part; a unified control assembly is slidably mounted on the base frame. According to the channel steel positioning frame for the foundation short column steel reinforcement framework, vertical ribs can be stably and accurately limited and fixed, the vertical ribs can be conveniently and rapidly taken and placed, meanwhile, the binding position of stirrups cannot be restrained, the binding quality of the steel reinforcement framework can be improved, and the cost is reduced. And the construction work of a concrete structure can be conveniently carried out in a mode of hoisting to a pouring point along with the steel reinforcement framework, and the efficiency and the quality of concrete construction are comprehensively improved.

Description

Technical Field

[0001] This invention relates to the field of channel steel positioning frame technology, specifically a channel steel positioning frame for a short column reinforcement skeleton in foundations. Background Technology

[0002] In the construction of concrete structures, the forming quality of the steel reinforcement cage is directly related to the overall accuracy of subsequent pouring and the stability of the structure. Current construction methods mostly adopt on-site fabrication and overall hoisting, that is, the steel reinforcement cage is first tied and formed on the construction site, and then the steel reinforcement cage is moved to the designated pouring position by hoisting equipment.

[0003] To improve the efficiency and quality of rebar cage fabrication, positioning frames are typically used to limit and fix the vertical rebars, ensuring uniform spacing and providing temporary support during the binding process. Currently, most positioning frames are rectangular structures with pre-set slots or holes. During construction, the vertical rebars are inserted for positioning, followed by the binding of stirrups. After the stirrups are formed, the entire structure is hoisted, and the positioning frame automatically separates from the stirrups during hoisting, allowing for rapid transition to the next rebar cage. This method effectively improves the quality and efficiency of rebar cage binding and contributes to increased concrete structure construction efficiency. However, it still has significant shortcomings in practical engineering: First, the placement of the positioning frames is limited, only allowing installation at the top and / or bottom of the rebar cage. Furthermore, stirrups cannot be bound above the top positioning frame or below the bottom positioning frame, as this would hinder the separation of the positioning frame from the rebar cage. This arrangement, to some extent, restricts further improvement in the quality of the rebar cage formation.

[0004] Secondly, during the hoisting process, the steel reinforcement cage loses the limitation and support of the positioning frame, making it prone to deformation, which directly affects the accuracy and quality of subsequent concrete pouring. This problem is particularly prominent in the foundation short column steel reinforcement cages that bear important vertical and horizontal load transfer tasks between the building foundation and the superstructure.

[0005] In addition, the existing positioning frame's bayonet and hole dimensions are difficult to balance between installation convenience and positioning stability. If an interference fit is used, it is difficult to conveniently insert and remove vertical bars. If a clearance fit is used, it is difficult to achieve stable positioning, ultimately affecting the overall forming quality of the steel reinforcement cage.

[0006] To address the aforementioned issues, existing technologies have attempted to improve the situation by using snap-on or detachable limiting components, such as using U-shaped limiting components with fastening nuts to fix the vertical reinforcement bars. However, these solutions require individual operations during installation and disassembly, which is cumbersome and significantly reduces on-site fabrication efficiency. In addition, some technologies have attempted to hoist the positioning frame along with the reinforcement cage to the pouring point to reduce the deformation of the reinforcement cage during hoisting. However, since the pouring point is usually located in the foundation pit, where the space is confined and the lighting is dim, the existing positioning frame is difficult to remove in this environment. This also increases the complexity of the overall construction, affecting not only the overall construction efficiency but also reducing the overall construction economy. Therefore, the existing positioning frame has problems that urgently need improvement in both structure and application mode. Summary of the Invention

[0007] This invention provides a channel steel positioning frame for a short column reinforcement cage in foundations. The positioning frame includes a rectangular base frame, with several limiting units evenly distributed along each side of the base frame. Each limiting unit includes: a mounting base, detachably and fixedly mounted on the base frame; positioning heads symmetrically hinged to the mounting base, with arc-shaped clamping surfaces on opposite sides; an elastic structure located between the symmetrical positioning heads, providing a reverse restraining force less than the clamping force during the clamping and fixing of the vertical reinforcement bars, so that the positioning heads are in a ready-to-clamp state when not clamping; and a sliding member, slidably mounted. A limiting head is symmetrically arranged on the mounting base; the limiting head includes: a horizontal limiting part for controlling the relative rotation of the symmetrical positioning heads; a vertical limiting part for restricting the vertical degree of freedom of the positioning head and providing vertical support; an opening part, installed on the sliding part, and controlling the positioning head to rotate in the opposite direction to open after the limiting head is released, so as to release the clamping and fixing of the vertical rib and completely offset the positioning head from the stirrup in the vertical direction. A unified control component is slidably installed on the base frame. The unified control component includes a sliding frame and several connecting heads. The connecting heads cooperate with the sliding part to limit the connection between the multiple sliding parts and the sliding frame, and move synchronously with the sliding frame.

[0008] In one possible implementation, a plurality of mounting points are provided on the base frame, the mounting points are distributed in a rectangular array, and there are at least two columns in the longitudinal direction, with the limiting unit installed on any one of the mounting points in the corresponding column.

[0009] In one possible implementation, limit posts are symmetrically installed on the slider, and the connecting head is fixedly installed on the sliding frame to form a limit area with an upper opening with the sliding frame. The limit posts are inserted into the limit area from top to bottom, so that the slider and the sliding frame are limited and connected together.

[0010] In one possible implementation, the horizontal limiting part is a cylindrical structure and is rotatably mounted on the sliding member. The side opposite to the symmetrical positioning head is an inclined limiting surface, which abuts against the horizontal limiting part. The vertical limiting part is a limiting ring and is fixedly sleeved on the horizontal limiting part. The inclined limiting surface has a limiting groove that matches the vertical limiting part.

[0011] In one possible implementation, the base frame is provided with a plurality of limiting holes, and a positioning post corresponding to the limiting hole is fixedly installed on the mounting base. The positioning post is inserted into the corresponding limiting hole to reinforce and limit the mounting base.

[0012] In one possible implementation, the opening element includes a limiting frame and limiting members, which are respectively mounted on the positioning head and the sliding member, both of which are located in the limiting frame and constrain the degree of freedom of the limiting frame in the vertical direction.

[0013] In one possible implementation, the elastic structure and the symmetrical positioning head are in abutting contact, and the elastic structure is fixedly mounted on the mounting base.

[0014] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: According to the embodiments of the present invention, a channel steel positioning frame for a short column reinforcement cage in a foundation is provided. The positioning head, with the cooperation of the elastic structure and the limiting head, clamps and fixes the vertical reinforcement in a manner of first preparing to clamp and then tightening the clamp. This facilitates the rapid placement of the vertical reinforcement and provides stable and accurate limiting clamping and fixing of the vertical reinforcement. Moreover, during the separation process between the reinforcement cage and the positioning frame after the reinforcement cage is formed, the limiting head and the opening component cooperate to control the clamping and fixing and the release of the positioning head. After the positioning head is released from clamping and fixing, it is completely offset from the stirrups in the longitudinal direction, which facilitates the removal of the reinforcement cage and the position of the stirrup binding is not affected by the removal of the reinforcement cage. The process constraints not only help to further improve the quality of the rebar cage binding, but also facilitate the construction of concrete structures by hoisting the positioning frame along with the rebar cage to the pouring point. This effectively reduces the possibility of deformation of the rebar cage during hoisting, which would reduce the quality of the pouring. During the placement of the rebar cage into the foundation pit, the positioning head can be quickly and conveniently released from clamping the vertical bars at the pit opening. After the rebar cage is placed, the positioning frame can be directly hoisted to the rebar cage fabrication point for rebar cage fabrication. This comprehensively improves the efficiency and quality of concrete construction. In particular, the positioning head can stably and accurately limit and fix the vertical bars under the limitation of the horizontal and vertical limiting parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a channel steel positioning frame for a short column reinforcement cage in a foundation, provided by an embodiment of the present invention.

[0016] Figure 2This is a partial structural schematic diagram of a channel steel positioning frame for a short column reinforcement cage in a foundation, provided by an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the positioning head and limiting head of a channel steel positioning frame for a short column reinforcement cage in a foundation, provided by an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the positioning head clamping and unfolding process of a channel steel positioning frame for a short column reinforcement cage in a foundation, provided by an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the installation point and connection head of a channel steel positioning frame for a short column reinforcement cage in a foundation, provided by an embodiment of the present invention.

[0020] In the diagram: 1. Base frame; 2. Mounting base; 3. Positioning head; 4. Arc-shaped clamping surface; 5. Elastic structure; 6. Sliding component; 7. Limiting head; 71. Horizontal limiting part; 72. Vertical limiting part; 8. Opening component; 81. Limiting frame; 82. Limiting component; 9. Unified control component; 91. Sliding frame; 92. Connecting head; 10. Limiting post; 11. Limiting groove; 12. Mounting point; 13. Limiting hole; 14. Positioning post; 15. Vertical reinforcement; 16. Stirrup. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Please see Figure 1 A channel steel positioning frame for a short column reinforcement cage in foundations, comprising a base frame 1, such as... Figure 1As shown, the base frame 1 is a rectangular frame composed of four side beams connected end to end. Each side beam has several evenly distributed limiting units on its inner side. These limiting units correspond one-to-one with the vertical reinforcement bars 15 on the corresponding side and are used to limit and fix the vertical reinforcement bars 15, ensuring the accuracy of the spacing between them and providing support during the subsequent binding of the stirrups 16. This effectively improves the quality of the steel reinforcement cage formation. Each side beam also has a unified control component 9 that uniformly controls the limiting units to limit and fix the vertical reinforcement bars 15 or uniformly releases their limiting fixation. During disassembly, the unified control component 9 uniformly controls the limiting units on the corresponding side beam to quickly release the limiting fixation of the vertical reinforcement bars 15, causing the limiting units to be completely offset longitudinally from the transverse stirrups 16 and located outside the stirrups 16. At this point, no further disassembly is required; the steel reinforcement cage can be moved upwards to complete the separation of the steel reinforcement cage from the positioning frame. This facilitates the binding of the steel reinforcement bars using the positioning frame as a fixed setting, and allows the steel reinforcement cage to be moved upwards after formation. The positioning frame is detachable to meet the conventional application of the positioning frame, and the binding of the stirrups is unrestricted. The stirrups can be bound at both the top and bottom of the positioning frame, which helps to further improve the binding quality of the rebar cage. The rebar cage can also be directly lowered and placed into the foundation pit. This allows for efficient and convenient hoisting of the positioning frame to the pouring point along with the rebar cage, and the quick disassembly of the positioning frame and placement of the rebar cage. This effectively avoids the deformation of the rebar cage during hoisting, which could reduce the quality of the pouring. It provides strong assistance in improving the quality of the pouring. For example, a temporary limiting structure (not shown in the figure) can be set at the pit opening to limit the base frame 1. When the positioning frame is hoisted to the top of the pit along with the rebar cage, the positioning frame will move onto the limiting structure as the rebar cage is lowered. At this time, the lowering of the rebar cage is paused slightly, and then the limiting unit is quickly released from the vertical bar. Then the rebar cage is lowered to the preset position, and finally the positioning frame is hoisted back up and detached from the rebar cage.

[0023] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The limiting unit includes a mounting base 2, a positioning head 3, an elastic structure 5, a sliding member 6, a limiting head 7, and an opening member 8. The mounting base 2 is detachably and fixedly installed on the inner side of the corresponding side beam. The positioning head 3 is symmetrically hinged to the mounting base 2, and the opposite sides of the symmetrical positioning head 3 are provided with arc-shaped clamping surfaces 4 (e.g., Figure 4 As shown), the elastic structure 5 is located between the symmetrical positioning heads 3. The opening part 8 and the limiting head 7 are symmetrically arranged and correspond one-to-one with the positioning head 3. Figure 3 and Figure 4As shown, the symmetrical limiting heads 7 are located on the opposite side of the corresponding positioning heads 3 and are mounted on the sliding member 6. The opening member 8 is connected between the positioning head 3 and the sliding member 6. In the initial state, the symmetrical positioning heads 3 are in the ready-to-clamp state. At this time, the limiting heads 7 limit the positioning heads 3 from the opposite side of the positioning heads 3. The elastic structure 5 located between the symmetrical positioning heads 3 provides a force that inhibits the positioning heads 3 from rotating inward, so that the positioning heads 3 are in the ready-to-clamp state. At this time, the vertical rib 15 can be smoothly inserted between the symmetrical positioning heads 3 and located in the corresponding arc-shaped clamp. Between the holding surfaces 4, after all the vertical ribs 15 are inserted between the symmetrical positioning heads 3 in the corresponding limiting units, the unified control component 9 uniformly controls the sliding member 6 to slide inward. The symmetrical positioning heads 3 rotate inward synchronously under the limitation of the corresponding limiting head 7, clamping and fixing the corresponding vertical ribs 15 in the center. During the disassembly process, the unified control component 9 uniformly controls the sliding member 6 to slide outward, gradually releasing the limitation of the positioning head 3 by the limiting head 7. Then, it drives the opening member 8 to open the symmetrical positioning head 3 until it is completely separated from the vertical ribs 15 and staggered from the stirrups 16 in the vertical direction (e.g., Figure 4 (As shown in the lower right view), at this time, the steel reinforcement cage can move vertically, where the elastic structure 5 and the symmetrical positioning head 3 are in abutting contact, and the elastic joint 5 is fixedly installed on the mounting base 2, as shown. Figure 4 As shown, the elastic structure 5 is a mounting block with symmetrically arranged elastic contact heads. The mounting block is fixedly installed on the mounting base 2. When the symmetrical positioning head 3 is in the ready clamping state, the corresponding elastic contact heads abut against the positioning head 3 respectively. When the positioning head 3 is rotated open in the opposite direction, the elastic structure 5 is no longer compressed. The elastic contact head can be a rubber head.

[0024] See Figure 3 and Figure 4 The opening component 8 includes a waist-shaped limiting frame 81 and a limiting component 82 that limits the limiting frame 81, such as... Figure 4 As shown, the limiting member 82 is installed on the positioning head 3 and the sliding member 6 respectively, and both are located within the limiting frame 81, constraining the vertical degree of freedom of the limiting frame 81. During the process of the opening member 8 opening the symmetrical positioning head 3, as the sliding member 6 moves outward, the limiting frame 81, under the limiting of the upper limiting member 82 on the sliding member 6, pulls the positioning head 3 to rotate in opposite directions until it is completely misaligned with the stirrup 16 in the vertical direction (e.g., Figure 4 (As shown in the lower right view), at this time, the steel reinforcement cage can either move upward to separate from the positioning frame or move downward to be placed into the foundation pit. As the sliding member 6 slides inward, the limiting frame 81 gradually relaxes as the sliding member 6 slides. Then, the limiting head 7 abuts against the corresponding positioning head 3 and makes the positioning head 3 rotate relative to each other.

[0025] See Figure 3The limiting head 7 includes a horizontal limiting part 71 and a vertical limiting part 72. The horizontal limiting part 71 controls the horizontal rotation of the positioning head 3, and the vertical limiting part 72 restricts the vertical degree of freedom of the positioning head 3 and provides vertical support. The horizontal limiting part 71 is a cylindrical structure and is rotatably mounted on the sliding member 6, which can effectively reduce the friction during the limiting process. The opposite side of the symmetrical positioning head 3 is an inclined limiting surface, which abuts against the horizontal limiting part 71. The vertical limiting part 72 is a limiting ring and is fixed. The horizontal limiting part 71 is fitted in the middle and coaxially distributed with the horizontal limiting part 71. The inclined limiting surface has a limiting groove 11 that cooperates with the vertical limiting part 72. During the sliding of the sliding member 6, the horizontal limiting part 71 cooperates with the inclined limiting surface to make the positioning head 3 rotate inward synchronously. At the same time, the vertical limiting part 72 always moves along the limiting groove 11, limiting the positioning head 3 in the vertical direction, ensuring the accuracy of the positioning head 3 position and providing support for the positioning head 3 in the vertical direction, ensuring the stability of the positioning head 3 clamping state.

[0026] See Figure 2 , Figure 3 and Figure 5 The unified control component 9 includes a sliding frame 91 and several connecting heads 92. The connecting heads 92 cooperate with the sliding parts 6, so that the multiple sliding parts 6 are limited and connected to the sliding frame 91 and move with the sliding frame 91. The sliding frame 91 is slidably installed above the side beam in the inward and outward directions. The connecting heads 92 are limit rods and are fixedly installed on the sliding frame 91, forming a limit area with an upper opening with the sliding frame 91. Limiting posts 10 are symmetrically installed on the sliding parts 6. The limiting posts 10 can be inserted into the limit area from top to bottom, so that the sliding parts 6 slide inward and outward with the sliding frame 91, and facilitate the disassembly and assembly of the limit unit. The sliding frame 91 can be driven by a screw structure. The screw structure is used to feed spirally and lock in real time to control the movement of the sliding frame 91 and lock it in the current position in real time.

[0027] See Figure 2 and Figure 5 Several installation points 12 are provided on the side beam. The installation points 12 are distributed in a rectangular array and there are at least two columns in the longitudinal direction. In the corresponding side direction, adjacent installation points 12 form a spacing unit. The limiting unit is installed based on the spacing unit and according to the spacing of the vertical ribs 15. It can meet the positioning requirements of vertical ribs 15 with a spacing multiple of the reference in different spacing units within a certain range. The vertically distributed installation points 12 provide more than one installation option for the limiting unit, which can make the inward limiting units staggered, thereby effectively avoiding the situation where the spacing of the vertical ribs 15 is too small and the parallel distribution of the limiting units causes mutual interference.

[0028] See Figure 3 and Figure 5The side beam is symmetrically provided with limit holes 13, and the mounting base 2 is fixedly installed with positioning pins 14 corresponding to the limit holes 13. The positioning pins 14 are inserted into the limit holes 13 to limit the mounting base 2 and improve the stability of the fixed state of the mounting base 2.

[0029] In embodiments of the present invention, 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.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding 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; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A channel steel positioning frame for a short column reinforcement cage in foundations, comprising a rectangular base frame, characterized in that: Each side of the base frame is provided with a plurality of limiting units evenly distributed along that side, the limiting units comprising: Mounting base, which can be detachably and securely installed on the base frame; The positioning heads are symmetrically hinged to the mounting base, and their opposite sides are provided with arc-shaped clamping surfaces; An elastic structure is provided between symmetrical positioning heads to provide a reverse restraining force smaller than the clamping force during the process of the positioning heads clamping and fixing the vertical rib, so that the positioning heads are in a ready-to-clamp state when not clamping. A sliding component is slidably mounted on a mounting base and has symmetrically arranged limit heads on it; The limiting head includes: a horizontal limiting part, used to control the relative rotation of symmetrical positioning heads; The vertical limiting section is used to restrict the vertical degree of freedom of the positioning head and provide vertical support; The opening component is installed on the sliding component and, after the limiting head is released from its limit position, controls the positioning head to rotate in the opposite direction to open it, thereby releasing the clamping and fixing of the vertical rib and completely disengaging the positioning head from the stirrup in the vertical direction. A unified control component is slidably mounted on the base frame. The unified control component includes a sliding frame and several connecting heads. The connecting heads cooperate with the sliding parts to limit the connection between the multiple sliding parts and the sliding frame, and move synchronously with the sliding frame.

2. The channel steel positioning frame for a short column reinforcement cage in foundations according to claim 1, characterized in that: The base frame is provided with a number of mounting points, which are distributed in a rectangular array and have at least two columns in the longitudinal direction. The limiting unit is installed on any one of the mounting points in the corresponding column.

3. A channel steel positioning frame for a short column reinforcement cage in a foundation, as described in claim 1 or 2, characterized in that: Limiting posts are symmetrically installed on the sliding member, and the connecting head is fixedly installed on the sliding frame to form a limiting area with an opening at the top. The limiting posts are placed into the limiting area from top to bottom, so that the sliding member and the sliding frame are connected together in a limiting manner.

4. A channel steel positioning frame for a short foundation column reinforcement cage according to claim 1, characterized in that: The horizontal limiting part is a cylindrical structure and is rotatably mounted on the sliding part. The side opposite to the symmetrical positioning head is an inclined limiting surface, which abuts against the horizontal limiting part. The vertical limiting part is a limiting ring and is fixedly sleeved on the horizontal limiting part. The inclined limiting surface has a limiting groove that matches the vertical limiting part.

5. A channel steel positioning frame for a short column reinforcement cage in foundations according to claim 1, characterized in that: The base frame is provided with several limiting holes, and the mounting base is fixedly installed with positioning posts corresponding to the limiting holes. The positioning posts are inserted into the corresponding limiting holes to reinforce and limit the mounting base.

6. A channel steel positioning frame for a short foundation column reinforcement cage according to claim 1, characterized in that: The opening component includes a limiting frame and a limiting member. The limiting member is installed on the positioning head and the sliding member, respectively. Both are located in the limiting frame and constrain the degree of freedom of the limiting frame in the vertical direction.

7. A channel steel positioning frame for a short column reinforcement cage in foundations according to claim 1, characterized in that: The elastic structure and the symmetrical positioning head are in abutting contact, and the elastic structure is fixedly installed on the mounting base.

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