A longitudinal steel bar installation auxiliary device for a steel reinforcement formwork frame and a use method thereof

Abstract

This invention discloses an auxiliary device and method for installing longitudinal reinforcing bars on a rebar formwork, belonging to the technical field of longitudinal reinforcing bar installation using formwork. The invention includes an interconnected installation part and a guiding part. The installation part is equipped with a limiting component; the limiting component includes a first pressure plate and a first locking member. One end of the first locking member penetrates the installation part and extends into its inner cavity, connecting to the first pressure plate. The first locking member drives the first pressure plate to press and release the reinforcing bars located in the inner cavity of the installation part. By placing the end of the reinforcing bar into the installation part and fixing it, this invention overcomes the defect that the end of a single reinforcing bar is prone to bending and deformation when directly threaded longitudinally, thus easily slipping out from the gap between stirrups, thereby ensuring construction efficiency and quality. Furthermore, the installation auxiliary device of this invention can simultaneously perform longitudinal threading operations on multiple reinforcing bars, further improving work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of construction technology for longitudinal steel bar installation using a formwork frame, and more specifically, relates to an auxiliary device for installing longitudinal steel bars in a steel bar formwork frame and its usage method. Background Technology

[0002] Currently, when using formwork for rebar installation, the longitudinal rebar is typically threaded manually after the stirrups are positioned on the formwork. This method is inefficient and requires multiple people. Furthermore, due to the gaps between the stirrups and the increased bending of the longitudinal rebar as its length increases, it is difficult to control, often resulting in the longitudinal rebar slipping out of the gaps and ending up outside the stirrups, failing to meet design and specification requirements. This leads to rework, delays, increased labor input, and higher costs. Additionally, the increased length of the rebar during threading makes the ends less controllable, increasing the risk of injury to nearby personnel and posing a significant safety hazard.

[0003] A search revealed Chinese Patent Application Publication No. 2021.09.10, which discloses an auxiliary device for the rapid installation of longitudinal stirrups in a steel reinforcement cage. This auxiliary device includes an S-shaped hook, a first bearing, and a second bearing. The S-shaped hook comprises a first curved portion and a second curved portion. The inner rings of the first and second bearings are fixedly fitted onto the first curved portion. The axes of the first and second bearings intersect to form a V-shape. A gap is provided between the first and second bearings, and the width of this gap is smaller than the diameter of the stirrup to be installed. The second curved portion is used to suspend the longitudinal stirrups from the main reinforcement bars of the steel reinforcement cage. This application can improve the installation progress of longitudinal stirrups and reduce construction intensity. However, this auxiliary device mainly provides a fulcrum for the stirrups, and the problem of the stirrups easily slipping out of the gaps between the stirrups remains unresolved. Summary of the Invention

[0004] 1. The problem to be solved

[0005] To address the problem in existing technologies where longitudinal reinforcement bars easily slip out of the gaps between stirrups during installation, thus affecting construction progress and quality, this invention provides a longitudinal reinforcement bar installation auxiliary device and its usage method using a reinforcement formwork. The technical solution of this invention can effectively prevent longitudinal reinforcement bars from slipping out of the gaps between stirrups, ensuring construction quality and improving construction efficiency.

[0006] 2. Technical Solution

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0008] The present invention provides a longitudinal reinforcement installation auxiliary device for a steel bar formwork frame, comprising an interconnected installation part and a guide part, wherein the installation part is provided with a limiting component;

[0009] The limiting component includes a first pressure plate and a first locking member. One end of the first locking member passes through the mounting part and extends into its inner cavity to connect with the first pressure plate. The first locking member drives the first pressure plate to perform pressing and releasing operations on the reinforcing bars located in the inner cavity of the mounting part.

[0010] Furthermore, the mounting portion includes a connecting section and a mounting section, the mounting section being disposed at the end of the connecting section away from the guide portion; wherein, the top of the connecting section is higher than the top of the mounting section, and a first locking member is disposed on the top wall of the mounting section.

[0011] Furthermore, the connecting section is cylindrical in shape, and the cross-section of the mounting section is an arc with a radius not greater than that of the connecting section.

[0012] Furthermore, the sum of the lengths of the mounting portion and the guide portion is greater than 1.5 times the stirrup spacing.

[0013] Furthermore, the inner wall of the mounting section is provided with a support plate corresponding to the first pressure plate, and at least one of the pressing surfaces of the two is a concave arc-shaped surface.

[0014] Furthermore, it also includes a clamp for locking onto the reinforcing bar, the clamp being connected to a positioning rope, and the positioning rope being equipped with a second locking element.

[0015] Furthermore, the clamp includes a main board and end plates disposed at both ends of the main board, wherein a second pressure plate is connected to the opposite sides of the two end plates by an elastic element.

[0016] Furthermore, the main board has a guide groove along the distribution direction of the two end plates for the positioning rope to pass through, and the second locking member is provided on the main board.

[0017] Furthermore, both the first locking member and the second locking member are fastening bolts, and the end of the first locking member away from the first pressure plate is provided with a handle.

[0018] The method for threading reinforcing bars using the aforementioned longitudinal reinforcing bar installation auxiliary device includes the following steps:

[0019] Step 1: Connect the clamps together using positioning ropes, adjust the spacing between adjacent clamps according to the spacing requirements of the reinforcing bars, and tighten the positioning ropes.

[0020] Step 2: Secure the clamps to different steel bars, and then tie the multiple steel bars together;

[0021] Step 3: Place the tied ends of the reinforcing bars between the first pressure plate and the support plate, and press them tightly;

[0022] Step 4: Push the reinforcing bars along the direction of the guide. After the installation auxiliary device moves to the designated position, remove the tied reinforcing bars from the limiting component and then separate the multiple reinforcing bars. At this time, due to the positioning effect of the positioning rope, the spacing between the reinforcing bars meets the process requirements.

[0023] Step 5: Tie multiple steel bars in sequence, and then remove the clamps.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) The present invention provides a longitudinal reinforcement installation auxiliary device for a steel reinforcement formwork frame, comprising an interconnected installation part and a guide part, wherein a limiting component is provided on the installation part; in use, the end of the steel reinforcement is placed into the installation part and fixed, and the guiding effect of the tapered guide part is utilized; at the same time, the sum of the lengths of the installation part and the guide part is greater than the spacing of the stirrups, thereby overcoming the defect that the end of a single steel reinforcement is easy to bend and deform when directly threaded longitudinally, and thus easily slips out from the gap between the stirrups, so as to ensure construction efficiency and construction quality; in addition, the installation auxiliary device of the present invention can perform longitudinal threading operations on multiple steel reinforcements at the same time, thereby further improving work efficiency.

[0027] (2) A longitudinal reinforcement installation auxiliary device for a steel reinforcement formwork frame of the present invention, wherein the installation part is generally stepped and includes a connecting section and an installation section; wherein the top of the connecting section is higher than the top of the installation section, and the first locking member is disposed on the top wall of the installation section; through this design, the part of the first locking member protruding from the installation section is lower than the top of the connecting section, which can effectively prevent interference between the first locking member and the stirrup during the longitudinal reinforcement threading process, thereby affecting the normal progress of longitudinal reinforcement threading.

[0028] (3) The longitudinal reinforcement installation auxiliary device of the reinforcement formwork frame of the present invention further includes a clamp for clamping onto the reinforcement. The clamp is provided with a guide groove for the positioning rope to pass through, and the guide groove is equipped with a second locking member for locking the positioning rope. Through the cooperation of the clamp and the positioning rope, multiple reinforcements can be tied and positioned, so that the spacing between the reinforcements can meet the process requirements after longitudinal reinforcement is installed, thereby further improving work efficiency. In addition, the multiple reinforcements tied together have better strength than a single reinforcement, making them less prone to bending and deformation, which is also beneficial for longitudinal reinforcement installation. In addition, the setting of the support plate makes the tied reinforcements close to the center of the connection section, which can effectively prevent the clamp from protruding outside the connection section and interfering with the stirrups. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the longitudinal reinforcement installation auxiliary device for a steel bar formwork frame in Example 1;

[0030] Figure 2 This is a schematic diagram of the structure of an auxiliary device for installing longitudinal reinforcing bars in a reinforcing bar formwork in Example 2;

[0031] Figure 3 This is a schematic diagram of the fixture structure in Example 3;

[0032] Figure 4 This is a schematic diagram of the structure of the clamp and the reinforcing bar in the embodiment;

[0033] Figure 5 This is a schematic diagram showing the state of multiple steel bars after they have been tied together in the embodiment;

[0034] Figure 6 This is a schematic diagram of the longitudinal steel bar installation auxiliary device with a support plate in Example 4.

[0035] In the diagram: 1. Mounting section; 11. Connecting section; 12. Mounting section; 2. Guiding section;

[0036] 3. Limiting component; 31. First pressure plate; 32. First locking component; 33. Support plate; 34. Handle.

[0037] 4. Reinforcing bars; 5. Clamps; 51. Main board; 52. End plate; 53. Second pressure plate; 54. Elastic element; 55. Second locking element; 6. Positioning rope. Detailed Implementation

[0038] The present invention will be further described below with reference to specific embodiments.

[0039] Example 1

[0040] like Figure 1 As shown in the figure, a longitudinal steel bar installation auxiliary device for a steel bar formwork frame in this embodiment includes an installation part 1 and a guide part 2 connected to each other, and a limiting component 3 is provided on the installation part 1.

[0041] The mounting part 1 is a hollow cylindrical structure, and the guide part 2 is a conical structure. The transition between the mounting part 1 and the guide part 2 is smooth, which facilitates the longitudinal movement of the entire mounting auxiliary device. Here, longitudinal movement refers to the longitudinal direction of the reinforcing bar, that is, movement along the direction pointed by the conical guide part 2.

[0042] The limiting component 3 includes a first pressure plate 31 and a first locking member 32. One end of the first locking member 32 passes through the mounting part 1 and extends into its inner cavity to connect with the first pressure plate 31. The first locking member 32 drives the first pressure plate 31 to perform pressing and releasing operations on the reinforcing bar 4 located in the inner cavity of the mounting part 1.

[0043] Specifically, in this embodiment, the first locking member 32 is a fastening bolt, and the end of the fastening bolt away from the first pressure plate 31 is provided with a handle 34 to facilitate rotation. Of course, a screw hole needs to be machined on the mounting part 1, and the first locking member 32 and the mounting part 1 are connected by a threaded transmission to drive the first pressure plate 31.

[0044] In addition, in order to better limit the position of the reinforcing bar 4, the first pressure plate 31 is a concave arc-shaped plate. The main function of the first pressure plate 31 is to limit the reinforcing bar 4 radially to prevent the reinforcing bar 4 from shaking significantly within the installation part 1 during the longitudinal threading process, thereby affecting the smooth progress of the longitudinal threading.

[0045] It should be noted that even if there is an axial relative displacement between the reinforcing bar 4 and the first pressure plate 31, causing the reinforcing bar 4 to extend further into the guide part 2, it will eventually be stopped by the closed end of the guide part 2, thus not affecting the entire reinforcing bar insertion operation.

[0046] In this embodiment, a longitudinal reinforcement installation auxiliary device for a reinforcement formwork frame is described. During operation, the end of the reinforcement bar 4 is first inserted into the installation part 1. Then, the handle 34 is rotated, and the first pressure plate 31 is pressed down via the fastening bolts to clamp and limit the reinforcement bar 4. Finally, the reinforcement bar 4 is pushed to move the entire installation auxiliary device forward, completing the longitudinal reinforcement insertion operation.

[0047] It should be further noted that, in this embodiment, the length of the entire installation auxiliary device must be greater than the spacing of the stirrups to prevent the installation auxiliary device from slipping out of the gaps between the stirrups. Preferably, the length of the installation auxiliary device is greater than 1.5 times the stirrup spacing.

[0048] Compared to the traditional method of directly pushing the reinforcing bar 4 longitudinally, the ends of the reinforcing bar 4 tend to bend and deform to some extent, making it easy for it to slip out through the gaps between adjacent stirrups, affecting construction efficiency and quality. In this embodiment, during the longitudinal rebar threading operation, the ends of the reinforcing bars 4 are placed inside the installation part 1, thereby overcoming the defect of easy bending and deformation of the ends of a single reinforcing bar 4. At the same time, the guiding effect of the tapered guide part and the fact that the length of the installation auxiliary device is greater than the spacing of the stirrups can effectively prevent the entire device from slipping out of the gaps between the stirrups, ensuring the construction quality of the longitudinal rebar threading operation. In addition, the installation auxiliary device of this embodiment can perform longitudinal rebar threading operations on multiple reinforcing bars 4 simultaneously, thereby further improving work efficiency and saving construction time.

[0049] Example 2

[0050] In practical use, it was found that because the first locking member 32 protrudes from the mounting part 1, the protruding part is prone to interference between the stirrups during the longitudinal reinforcement threading process, thus affecting the efficiency of longitudinal reinforcement threading. To solve this problem, in this embodiment, the structure of the mounting part 1 is further optimized.

[0051] refer to Figure 2 As shown, the mounting section 1 is divided into two parts: a connecting section 11 and a mounting section 12. The mounting section 12 is located at the end of the connecting section 11 furthest from the guide section 2. The top of the connecting section 11 is higher than the top of the mounting section 12, and a first locking member 32 is disposed on the top wall of the connecting section 11. This ensures that the portion of the first locking member 32 protruding from the mounting section 12 remains lower than the top of the connecting section 11, thereby eliminating interference between the first locking member 32 and the stirrup.

[0052] Specifically, the connecting segment 11 is still a cylindrical structure, and the mounting segment 12 has an arc-shaped cross-section. Preferably, the radius of the mounting segment 12 is the same as that of the connecting segment 11, and the end face of the mounting segment 12 coincides with part of the end face of the connecting segment 11 to ensure a smooth transition at the connection between the two.

[0053] Furthermore, the installation section 1 is made of steel pipe, which is then cut radially and axially to remove part of the annular wall, making the steel pipe have a stepped shape. The top of the lower part of the step is covered with a cover plate to form the installation section 12, and the first locking member 32 is set on the cover plate and is as close as possible to the middle position; the higher part of the step is the connecting section 11.

[0054] Of course, the diameter of the mounting section 12 can also be smaller than that of the connecting section 11, and the two can be connected by a nested connection. That is to say, the end of the connecting section 11 is directly located in the inner cavity of the mounting section 12.

[0055] In this embodiment, the mounting portion 1 is set in a stepped shape, and the first locking member 32 is placed on the mounting section 12 at the lower part of the step. This ensures that the portion of the first locking member 32 protruding from the mounting section 12 is still lower than the top of the connecting section 11. During the longitudinal reinforcement process, since the connecting section 11 is a cylindrical structure and is located in front of the moving path of the mounting section 12, the protruding portion of the first locking member 32 and the handle 34 will not interfere with the stirrups.

[0056] Example 3

[0057] After using the auxiliary device described in the above embodiment to complete the longitudinal threading operation of multiple reinforcing bars 4, it is still necessary to tie each individual reinforcing bar 4. The tying operation of the longitudinal reinforcing bars requires adjusting the spacing between each reinforcing bar 4 according to process requirements. In this embodiment, a clamp 5 is provided. This clamp 5, in cooperation with the positioning rope 6, ensures that the spacing between multiple reinforcing bars 4 directly meets process requirements after the longitudinal threading operation is completed, thereby further improving construction efficiency.

[0058] Specifically, refer to Figures 3-5 As shown, the clamp 5 includes a main board 51 and end plates 52 disposed at both ends of the main board 51. Each end plate 52 has an elastic element 54 connected to its opposite side, and the other end of each elastic element 54 is connected to a second pressure plate 53. Preferably, the elastic element 54 is a spring. The connection between the clamp 5 and the reinforcing bar 4 is achieved through the two second pressure plates 53.

[0059] The main board 51 is provided with a wire passage groove for the positioning rope 6 to pass through, and the wire passage groove is opened along the distribution direction of the two end plates 52. A second locking member 55 is also provided on the main board 51, which is preferably a fastening bolt. One end of the fastening bolt enters the wire passage groove through a screw hole on the main board 51 to perform tightening and loosening operations on the positioning rope 6.

[0060] In addition, to ensure the stability of the engagement of the two second pressure plates 53 with the reinforcing bar 4, the pressing surfaces of the two second pressure plates 53 can be designed as an arc-shaped structure that adapts to the outer periphery of the reinforcing bar 4 (not shown in the figure).

[0061] In this embodiment, multiple clamps 5 are connected in series by positioning rope 6, and the positioning rope 6 is locked by the second locking member 55; at the same time, the clamps 5 are clamped on the reinforcing bars 4 by the second pressure plate 53, and by adjusting the spacing between the clamps 5, the spacing between the reinforcing bars 4 can be ensured to meet the corresponding process requirements.

[0062] Example 4

[0063] In the above embodiments, the clamp 5 ensures that after the longitudinal threading of multiple reinforcing bars 4, the spacing between adjacent reinforcing bars 4 can directly meet the process requirements without further spacing adjustments, thereby improving work efficiency. However, when the clamp 5 is clamped onto the reinforcing bars 4, and the reinforcing bars 4 are close to the inner wall of the installation section 12, the clamp 5 may be located on the outer side of the installation section 12, thus posing a risk of interference between the clamp 5 and the stirrups.

[0064] To solve the above problems, such as Figure 6 As shown, in this embodiment, a support plate 33 is provided on the inner wall of the installation section 12, and the position of the support plate 33 corresponds to the first pressure plate 31. Preferably, the limiting space formed by the first pressure plate 31 and the support plate 33 is as close as possible to the center of the installation section 12 to reduce the risk of interference between the clamp 5 and the stirrup.

[0065] In addition, the support plate 33 can also be designed as a concave arc-shaped structure, so that the pressing surfaces of the support plate 33 and the first pressure plate 31 together form a limiting space. Of course, either the support plate 33 or the first pressure plate 31 can be designed as an arc shape.

[0066] In this embodiment, the cooperation between the support plate 33 and the first pressure plate 31 not only completes the limiting work of the reinforcing bar 4, but also effectively prevents interference between the low clamp 5 and the stirrups. Of course, in the aforementioned embodiments, the support plate 33 can also be provided on the inner wall of the installation section 12.

[0067] A method for longitudinal reinforcement threading using an installation auxiliary device according to this embodiment includes the following steps:

[0068] Step 1: Pass the positioning rope 6 through the wire grooves on multiple clamps 5 in sequence, and use the positioning rope 6 to connect the clamps 5 together. Adjust the spacing between adjacent clamps 5 according to the spacing requirements of the reinforcing bars 4, and press and fix the positioning rope 6 with the second locking member 55.

[0069] In this specific embodiment, the positioning rope 6 is connected with four clamps in series, meaning that four steel bars 4 are simultaneously threaded longitudinally. Of course, the specific number of steel bars 4 during each longitudinal threading operation can be determined according to actual needs, and can be increased or decreased.

[0070] Step 2: Use the second pressure plate 53 to clamp the clamp 5 onto different steel bars 4, and then tie the multiple steel bars 4 together.

[0071] It should be noted that the clamps 5 should be staggered and as close as possible to each other when they are clamped on different reinforcing bars 4. The staggered clamps 5 are to prevent interference between different clamps 5 during the binding process; while the close clamps are to ensure the accuracy of the spacing between the reinforcing bars 4.

[0072] Step 3: Place the tied ends of the reinforcing bars 4 between the first pressure plate 31 and the support plate 33, and rotate the first locking member 32 to press and limit them. In this step, try to ensure that the clamp 5 is located inside the installation part 1 to reduce the risk of interference between the clamp 5 and the stirrups.

[0073] Step 4: Push the tied steel bar 4 along the direction of the guide part 2. After the installation auxiliary device moves to the designated position, take the tied steel bar 4 out from the limiting component 3, and then separate the multiple steel bars 4. At this time, due to the positioning effect of the positioning rope 6, the spacing between the steel bars 4 meets the process requirements.

[0074] Step 5: Tie multiple steel bars 4 in sequence, and then remove the clamps 5.

[0075] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An auxiliary device for installing longitudinal reinforcing bars on a reinforcing bar formwork, characterized in that: It includes an installation part (1) and a guide part (2) that are connected to each other, and the installation part (1) is provided with a limiting component (3); The limiting component (3) includes a first pressure plate (31) and a first locking member (32), wherein one end of the first locking member (32) passes through the mounting part (1) and extends into its inner cavity to connect with the first pressure plate (31). The first locking member (32) drives the first pressure plate (31) to perform pressing and releasing operations on the steel bar (4) located in the inner cavity of the mounting part (1). The mounting part (1) includes a connecting section (11) and a mounting section (12), wherein the mounting section (12) is disposed at the end of the connecting section (11) away from the guide part (2); wherein the top of the connecting section (11) is higher than the top of the mounting section (12), and a first locking member (32) is disposed on the top wall of the mounting section (12); The inner wall of the installation section (12) is provided with a support plate (33) corresponding to the first pressure plate (31), and at least one of the pressing surfaces of the two is a concave arc surface; A limiting space is formed between the first pressure plate (31) and the support plate (33), and the limiting space is close to the center of the installation section (12); It also includes a clamp (5) for clamping onto the reinforcing bar (4), the clamp (5) being connected to a positioning rope (6), and the positioning rope (6) being equipped with a second locking element (55). The clamp (5) includes a main board (51) and end plates (52) disposed at both ends of the main board (51), wherein the opposite sides of the two end plates (52) are connected to a second pressure plate (53) by an elastic element (54).

2. The auxiliary device for installing longitudinal reinforcing bars in a reinforcing bar formwork according to claim 1, characterized in that: The connecting section (11) is cylindrical in shape, and the cross section of the mounting section (12) is an arc with a radius not greater than that of the connecting section (11).

3. The auxiliary device for installing longitudinal reinforcing bars in a reinforcing bar formwork according to claim 2, characterized in that: The sum of the lengths of the mounting part (1) and the guide part (2) is greater than 1.5 times the stirrup spacing.

4. A longitudinal reinforcement installation auxiliary device for a steel reinforcement formwork according to any one of claims 1-3, characterized in that: The main board (51) has a wire groove along the distribution direction of the two end plates (52) for the positioning rope (6) to pass through, and the second locking member (55) is provided on the main board (51).

5. The auxiliary device for installing longitudinal reinforcing bars in a reinforcing bar formwork according to claim 4, characterized in that: Both the first locking member (32) and the second locking member (55) are fastening bolts, and the end of the first locking member (32) away from the first pressure plate (31) is provided with a handle (34).

6. A method for threading reinforcing bars using the longitudinal reinforcing bar installation auxiliary device as described in claim 5, characterized in that: Includes the following steps, Step 1: Use the positioning rope (6) to connect multiple clamps (5) together. Adjust the spacing between adjacent clamps (5) according to the spacing requirements of the steel bars (4), and tighten the positioning rope (6). Step 2: Secure the clamps (5) onto different reinforcing bars (4) and then tie the multiple reinforcing bars (4) together; Step 3: Place the end of the tied steel bar (4) between the first pressure plate (31) and the support plate (33) and press it tightly; Step 4: Push the reinforcing bar (4) along the direction of the guide (2). After the installation auxiliary device moves to the designated position, take the tied reinforcing bar (4) out of the limiting component (3) and then separate the multiple reinforcing bars (4). At this time, due to the positioning effect of the positioning rope (6), the spacing between the steel bars (4) meets the process requirements; Step 5: Tie multiple steel bars (4) in sequence, and then remove the clamps (5).

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