Rebar spacing positioning device

Abstract

This invention discloses a rebar spacing positioning device, specifically relating to the field of rebar positioning technology. It includes a base with a deflection plate on it. Positioning and lifting components are respectively arranged on both sides of the deflection plate. Each positioning and lifting component includes a support frame mounted on the deflection plate. A sliding plate is slidably connected to the center of the support frame, and several variable-pitch grooves are formed through the sliding plate. This invention achieves precise adjustment of the support rod spacing through the coordinated operation of the support frame, sliding plate, variable-pitch grooves, and sliding column, combined with a screw-driven adjusting rod. The variable-pitch grooves are radially distributed along the axial direction of the sliding plate, ensuring uniform spacing during the convergence or diffusion of the support rods by the sliding column. This effectively avoids errors from manual positioning, ensuring that the rebar spacing strictly meets design requirements. It prevents insufficient tensile strength due to excessive spacing and stress concentration caused by insufficient spacing, thus guaranteeing the mechanical stability of reinforced concrete structures from the source.

Description

Technical Field

[0001] This invention relates to the field of rebar positioning technology, and more specifically, to a rebar spacing positioning device. Background Technology

[0002] As the core load-bearing component of reinforced concrete structures, steel bars are widely used in civil engineering fields such as buildings, bridges, and tunnels. They form a synergistic working system with concrete through bonding force. Concrete mainly bears compressive force, while steel bars bear tensile force. The combination of the two can significantly improve the load-bearing capacity, ductility, and durability of the structure.

[0003] In reinforced concrete structure construction, precise control of rebar spacing is a crucial aspect of ensuring project quality. On one hand, rebar spacing directly affects the structure's mechanical properties: excessive spacing prevents the tensile force in the concrete's tension zone from being effectively distributed by the rebar, easily leading to early concrete cracking and reduced structural load-bearing capacity. For example, excessive rebar spacing in floor slabs can cause significant bending cracks during use. Insufficient spacing results in overly dense rebars, causing stress concentration and weakening the structure's tensile and shear resistance. For instance, inadequate stirrup spacing in beams can lead to localized stress imbalances. On the other hand, rebar spacing is also closely related to concrete pouring quality: the spacing must allow sufficient space for concrete aggregates (gravel, sand). If the spacing is too small, the concrete cannot densely fill the gaps between the rebars, easily forming voids, honeycomb, and other defects, reducing the bond between the rebar and concrete, and consequently affecting the structure's durability and seismic performance.

[0004] Existing methods for positioning reinforcing bars mostly rely on manual measurement and binding, which is not only inefficient but also prone to errors in positioning accuracy due to human operation, making it difficult to ensure the consistency of reinforcing bar spacing. At the same time, traditional positioning devices are mostly fixed structures, which cannot flexibly adapt to the needs of different specifications of reinforcing bars, different construction angles, and multi-layer and multi-directional reinforcement. After positioning, the reinforcing bars are prone to displacement during the pouring process, further affecting the quality of the project. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rebar spacing positioning device, which aims to solve the problems mentioned in the background art.

[0006] The present invention provides the following technical solution: a rebar spacing positioning device, including a base, a deflection plate provided on the base, and positioning and lifting components provided on both sides of the deflection plate;

[0007] The positioning and lifting assembly includes a support frame mounted on a deflection plate. A slide plate is slidably connected to the middle of the support frame. Several variable pitch grooves are opened through the slide plate, and each variable pitch groove is radially distributed along the axis of the slide plate. Sliding columns are slidably connected to the multiple slide plates, and each sliding column is provided with a support rod. The support rods are displaced on the slide plate along the variable pitch grooves guided by the sliding columns, causing the support rods to converge and spread.

[0008] An adjustment groove is provided on the support rod, and a first locking rod is slidably connected in the adjustment groove. A second locking rod is hinged to the top side of the first locking rod. A rotating wheel is rotatably connected to the middle of the first locking rod. An abutment block is hinged on the second locking rod. The bottom end of the abutment block abuts against the rotating wheel. By moving the second locking rod, the abutment block is displaced, driving the rotating wheel to rotate.

[0009] Optionally, in a possible implementation, the positioning and lifting assembly further includes a hinge rod disposed at the bottom of the second locking rod. The hinge rod is hinged to the second locking rod, and the bottom end of the hinge rod extends to the rotating wheel. The hinge rod is driven to move by pressing down the second locking rod, which in turn drives the rotating wheel to rotate. A locking tooth is provided on one side of the rotating wheel, and an extension rod is provided on the other side of the rotating wheel. A first positioning groove is provided on the extension rod, and a second positioning groove is provided at one end of the first locking rod. The second positioning groove is located at the top of the first positioning groove. The extension rod and the rotating wheel rotate axially along the connection between the rotating wheel and the first locking rod, causing the extension rod to move closer to the second positioning groove to clamp the reinforcing bar. A torsion spring is provided at the connection between the abutment block and the second locking rod. When the abutment block is deflected by force, the torsion spring is compressed. The elasticity of the torsion spring itself drives the abutment block to reset, so that the bottom end of the abutment block can be continuously locked on the locking tooth.

[0010] Optionally, in a possible implementation, an adjusting rod is slidably connected to the bottom of the support frame. The adjusting rod is installed at the bottom of the support frame via a lead screw, and one end of the adjusting rod extends to the slide plate. Rotating the lead screw drives the adjusting rod to move the slide plate, so that each support rod is adjusted by changing the pitch via the sliding column and the pitch groove. An electric push rod is provided inside the base. The output end of the electric push rod is hinged to a first traction rod. One end of the first traction rod is hinged to a second traction rod. The second traction rod is hinged to the base. One end of the second traction rod is hinged to a third traction rod. One end of the third traction rod extends to a deflection plate. The third traction rod is hinged to the deflection plate. The end of the deflection plate away from the third traction rod extends to the base and is hinged to the base. The electric push rod drives the first traction rod to move and pull the second traction rod to deflect. The deflection of the second traction rod drives the third traction rod to pull the deflection plate to deflect, which is used to adjust the position of the positioning and lifting assembly.

[0011] The technical effects and advantages of this invention are as follows:

[0012] 1. This invention, through the coordinated operation of the support frame, sliding plate, variable pitch groove, and sliding column, combined with the adjusting rod driven by the screw, enables precise adjustment of the support rod spacing. The variable pitch groove is radially distributed along the axis of the sliding plate, ensuring uniform spacing during the convergence or diffusion of the support rods driven by the sliding column. This effectively avoids errors caused by manual positioning, ensuring that the rebar spacing strictly meets design requirements. It prevents insufficient tensile strength due to excessive spacing and stress concentration caused by insufficient spacing, thus guaranteeing the mechanical stability of the reinforced concrete structure from the source.

[0013] 2. This invention relies on the linkage structure of the first locking rod, the second locking rod, the rotating wheel, and the abutment block, combined with the locking function of the torsion spring and the locking teeth, to achieve double locking and fixing of the reinforcing bars. Whether the second locking rod is pried open to drive the rotating wheel through the abutment block, or the second locking rod is pressed down to pull the rotating wheel through the hinge rod, the first positioning groove and the second positioning groove on the extension rod can be driven to fit tightly against the reinforcing bar. The torsion spring drives the abutment block to continuously lock onto the locking teeth, preventing the rotating wheel from reversing, ensuring that the reinforcing bars do not loosen or shift during the concrete pouring process, and ensuring that the spacing accuracy remains consistent.

[0014] 3. This invention, through the linkage of an electric push rod, multiple sets of traction rods, and a deflection plate, can flexibly adjust the angle and position of the positioning and lifting components to adapt to the angle requirements of different construction scenarios. Simultaneously, the device can adapt to steel bars of different diameters by increasing or decreasing the number of support rods and adjusting the rod spacing. Furthermore, the positioning and lifting components on both sides of the deflection plate and the positioning structure at the top of the traction rods form a three-dimensional positioning system, enabling not only the positioning of steel bars within the same plane but also meeting the synchronous positioning requirements of multi-layer, multi-directional reinforcement, eliminating the need for an additional support frame and significantly improving construction adaptability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0016] Figure 1 This is a front view of the overall structure of the present invention.

[0017] Figure 2 This is a side view of the overall structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the base, electric push rod, first traction rod, second traction rod, third traction rod, and deflection plate of the present invention.

[0019] Figure 4 This is an illustration of the support frame, slide plate, support rod, and adjusting rod of the present invention.

[0020] Figure 5 This is a schematic diagram of the first locking rod, the second locking rod, the rotating wheel, the hinge rod, the abutment block, the extension rod, and the first positioning groove of the present invention.

[0021] Figure 6 For the present invention Figure 4 Exploded view.

[0022] Figure 7 For the present invention Figure 5 Exploded view.

[0023] The attached figures are labeled as follows: 1. Base; 2. Deflection plate; 3. Support frame; 4. Slide plate; 5. Variable pitch groove; 6. Support rod; 7. Adjustment groove; 8. Sliding column; 9. First locking rod; 10. Second locking rod; 11. Rotary wheel; 12. Abutment block; 13. Hinge rod; 14. Extension rod; 15. First positioning groove; 16. Second positioning groove; 17. Adjustment rod; 18. Electric push rod; 19. First traction rod; 20. Second traction rod; 21. Third traction rod. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Example 1

[0026] This embodiment discloses a rebar spacing positioning device, which aims to solve the problems in the prior art of difficulty in accurately controlling rebar spacing, insufficient stability after positioning, and poor pouring quality caused by rebar spacing issues during concrete pouring.

[0027] Specifically, the rebar spacing positioning device in this embodiment includes a base 1, which is made of high-strength alloy steel and has an anti-slip pad on its bottom to enhance the stability of the device on the construction site and prevent displacement during construction. A deflection plate 2 is mounted on the base 1 and is hinged to the base 1 via a pivot, allowing the deflection plate 2 to rotate flexibly around the hinge point. Positioning and lifting components are symmetrically arranged on both sides of the deflection plate 2 to lift and position the rebar from both sides, ensuring the balance of the rebar positioning.

[0028] The positioning and lifting assembly includes a support frame 3 fixedly mounted on the deflection plate 2. The support frame 3 has a rectangular frame structure, is hollow inside with openings at both ends, and a sliding plate 4 is slidably connected to the middle of the support frame 3. The sliding plate 4 can slide within the support frame 3. (See attached image) Figure 4 Appendix Figure 6As shown, several variable pitch grooves 5 are provided through the slide plate 4. Each variable pitch groove 5 is radially distributed along the axis of the slide plate 4. The variable pitch grooves 5 are evenly arranged in a fan shape with the center of the slide plate 4. Sliding columns 8 are slidably connected in the slide plates 4. The outer diameter of the sliding column 8 is adapted to the width of the variable pitch groove 5 to ensure the smooth sliding of the sliding column 8 in the variable pitch groove 5. Each sliding column 8 is vertically welded with a support rod 6. Its surface is smooth to avoid scratching the steel bars. The support rod 6 is displaced on the slide plate 4 by the guide of the sliding column 8 along the variable pitch groove 5, thereby realizing the convergence and diffusion of each support rod 6, and adjusting the spacing between adjacent support rods 6 to adapt to the positioning requirements of steel bars of different specifications.

[0029] Example 2

[0030] Based on Example 1, this embodiment is illustrated in the appendix. Figure 4 Appendix Figure 6 As shown, attached Figure 5 and attached Figure 7 As shown, the support rod 6 has an adjustment groove 7, which is set along the length of the support rod 6. A first locking rod 9 is slidably connected in the adjustment groove 7. The first locking rod 9 can slide up and down along the length of the adjustment groove 7 to adjust the locking position. A second locking rod 10 is hinged to one side of the top of the first locking rod 9 through a hinge shaft. The second locking rod 10 can rotate around the hinge shaft. A rotating wheel 11 is rotatably connected to the middle of the first locking rod 9 through a bearing. The rotating wheel 11 can rotate freely around its own axis. An abutment block 12 is hinged to the second locking rod 10 through a hinge seat. The bottom end of the abutment block 12 abuts against the rotating wheel 11. By moving the second locking rod 10, the abutment block 12 can be displaced, thereby driving the rotating wheel 11 to rotate.

[0031] The bottom of the second locking rod 10 is provided with a hinge rod 13. One end of the hinge rod 13 is hinged to the second locking rod 10 through a pin. The bottom end of the hinge rod 13 extends to the rotating wheel 11 and contacts the edge of the rotating wheel 11. Pressing down the second locking rod 10 can drive the hinge rod 13 to move, thereby pulling the rotating wheel 11 to rotate, realizing a dual drive mode and ensuring the convenience and reliability of the locking operation.

[0032] One side of the rotating wheel 11 has evenly spaced circumferentially serrated teeth, and the other side of the rotating wheel 11 has an integrally formed extension rod 14. The extension rod 14 has a first positioning groove 15, which is an arc-shaped groove whose curvature matches the outer diameter of the reinforcing bar. One end of the first locking rod 9 has a second positioning groove 16, which is also an arc-shaped groove and corresponds to the first positioning groove 15. The second positioning groove 16 is located at the top of the first positioning groove 15. By rotating the extension rod 14 and the rotating wheel 11 axially along the connection between the rotating wheel 11 and the first locking rod 9, the extension rod 14 can move closer to the second positioning groove 16, thereby clamping and fixing the reinforcing bar placed between the first positioning groove 15 and the second positioning groove 16, preventing the reinforcing bar from loosening or shifting during the positioning process.

[0033] In the above adjustment process, in order to achieve the function of locking and resetting the contact block 12, a torsion spring is provided at the connection between the contact block 12 and the second locking rod 10. One end of the torsion spring is fixed to the second locking rod 10, and the other end is fixed to the contact block 12. When the contact block 12 is deflected by force through the torsion spring, the torsion spring is compressed. When the second locking rod 10 is released, the elasticity of the torsion spring can drive the contact block 12 to reset, so that the bottom end of the contact block 12 can be continuously locked on the locking teeth, thereby realizing the positioning and locking of the rotating wheel 11 and ensuring the stability of the locking state.

[0034] An adjusting rod 17 is slidably connected to the bottom of the support frame 3. The adjusting rod 17 is installed at the bottom of the support frame 3 via a lead screw. One end of the lead screw passes through the side wall of the support frame 3 and extends to the outside. A handwheel is provided at the outer end of the lead screw to facilitate the operator to rotate the lead screw. One end of the adjusting rod 17 is fixedly connected to the slide plate 4 by bolts. Rotating the lead screw can drive the adjusting rod 17 to slide along the bottom of the support frame 3, thereby driving the slide plate 4 to move. This allows each support rod 6 to achieve pitch adjustment via the sliding column 8 and the pitch groove 5, improving the accuracy of the pitch adjustment.

[0035] Example 3

[0036] Based on Example 2, this embodiment is illustrated in the appendix. Figure 3As shown, an electric push rod 18 is fixedly installed inside the base 1 by bolts. The electric push rod 18 adopts a linear drive mechanism commonly used in the prior art. Its output end is hinged to a first traction rod 19 through a hinge joint. One end of the first traction rod 19 is hinged to a second traction rod 20 through a pin. The middle part of the second traction rod 20 is hinged to the base 1 through a rotating shaft. One end of the second traction rod 20 is hinged to a third traction rod 21 through a pin. One end of the third traction rod 21 extends to the deflection plate 2 through a hinge lug and is hinged to the deflection plate 2. The end of the deflection plate 2 away from the third traction rod 21 extends to the base 1 through a rotating shaft and is hinged to the base 1. The electric push rod 18 drives the first traction rod 19 to move, which can pull the second traction rod 20 to deflect around its middle hinge point. The deflection of the second traction rod 20 drives the third traction rod 21 to pull the deflection plate 2 to deflect around its hinge point with the base 1, thereby adjusting the position of the positioning and lifting component, so that the device can adapt to different construction angles and position requirements.

[0037] The specific working principle is as follows:

[0038] First, place base 1 on top of the formwork erected with steel bars. The anti-slip pad at the bottom of base 1 ensures the stability of the device and prevents displacement during construction.

[0039] According to construction requirements, activate the electric push rod 18 inside base 1, as shown in the attached diagram. Figure 3 As shown, the output end of the electric push rod 18 extends or retracts, driving the first traction rod 19 to perform linear displacement. During the displacement of the first traction rod 19, it pulls the second traction rod 20 to deflect around the hinge point between its middle part and the base 1. When the second traction rod 20 deflects, it drives the third traction rod 21 to move. The third traction rod 21 then pulls the deflection plate 2 to deflect around its hinge point with the base 1 until the positioning and lifting assembly is adjusted to a suitable angle position. Then, the electric push rod 18 is turned off, completing the adjustment of the positioning angle.

[0040] When adjusting the spacing of the reinforcing bars: According to the specifications and design spacing requirements of the reinforcing bars to be positioned, rotate the handwheel at the outer end of the bottom screw of the support frame 3, as shown in the attached diagram. Figure 4 Appendix Figure 6 As shown, the screw rotation drives the adjusting rod 17 to slide along the bottom of the support frame 3. The adjusting rod 17 drives the sliding plate 4 to slide within the support frame 3. During the sliding of the sliding plate 4, the sliding column 8 is displaced under the guidance of the variable pitch groove 5, which in turn drives the support rod 6 to move, realizing the convergence or diffusion of each support rod 6, thereby adjusting the spacing between adjacent support rods 6. When the spacing is adjusted to meet the design requirements, the handwheel is stopped to complete the initial adjustment of the steel bar spacing.

[0041] Rebar locking and fixing: Place the rebar to be positioned on the support rod 6, ensuring the rebar is between the first positioning groove 15 and the second positioning groove 16. The operator can then lock and fix the rebar in two ways:

[0042] Method 1: Move the second locking lever 10, as shown in the attached diagram. Figure 5 Appendix Figure 7 As shown, the second locking rod 10 rotates around the hinge axis with the first locking rod 9, causing the abutment block 12 to move. During the displacement, the abutment block 12 contacts the surface of the rotating wheel 11 and generates a traction force, which in turn drives the rotating wheel 11 to rotate around its own axis. The rotation of the rotating wheel 11 causes the extension rod 14 to move closer to the second positioning groove 16 until the first positioning groove 15 and the second positioning groove 16 are tightly attached to the surface of the steel bar, thus clamping the steel bar. At this time, the abutment block 12 is reset under the elastic action of the torsion spring, and its bottom end is locked on the tooth of the rotating wheel 11, thus locking the rotating wheel 11 and preventing the steel bar from loosening.

[0043] Method 2: Press down the second locking rod 10, the second locking rod 10 rotates around the hinge axis, driving the hinge rod 13 to move. The hinge rod 13 pulls the rotating wheel 11 to rotate, which in turn drives the extension rod 14 to move closer to the second positioning groove 16, thus completing the clamping of the steel bar. At the same time, the abutment block 12 is locked on the locking teeth under the action of the torsion spring, thus achieving locking.

[0044] Once the reinforcing bars are positioned and locked, concrete pouring can begin. Because the spacing between the reinforcing bars is precisely controlled and they are firmly fixed, the concrete aggregate can pass smoothly through the gaps, ensuring the compactness of the concrete and preventing defects such as voids and honeycombing. After the concrete has solidified, the second locking rod 10 is reversed to disengage the contact block 12 from the teeth of the rotating wheel 11. Then, the rotating wheel 11 is rotated in the opposite direction to move the extension rod 14 away from the second positioning groove 16, releasing the reinforcing bars. The position of the deflection plate 2 is then adjusted via the electric push rod 18, allowing for the positioning of the next set of reinforcing bars, or the device can be disassembled and moved to another construction location.

[0045] Example 4;

[0046] The above technical solution is attached as follows Figure 1 As shown, the positioning and lifting components on both sides of the deflection plate 2 enable the positioning of steel bars in the same plane. However, in actual civil engineering, steel bars are often arranged in multiple layers and directions, such as the longitudinal reinforcing bars, transverse stirrups, and web bars of beams, or the bottom bars, top bars, and distribution bars of floor slabs. Multiple sets of steel bars need to be positioned at different heights or in different directions. The original positioning and lifting components on both sides of the deflection plate 2 can position the bottom or middle layers of steel bars. The newly added first locking rod 9 and second locking rod 10 at the top of the second traction rod 20 and the third traction rod 21, as well as their internal structure, can position the upper layer of steel bars at different heights according to the length of the traction rod and the deflection angle, so as to achieve synchronous positioning of multiple layers of steel bars without the need to build an additional support frame.

[0047] The traction rod can be driven to deflect by the electric push rod 18. The positioning structure at the top can be adjusted with the angle of the traction rod to position the steel bars in different directions, such as the longitudinal reinforcing bars and the transverse distribution bars, forming a multi-dimensional positioning system in both plane and three-dimensional form, which can be used to adapt to complex reinforcement designs.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rebar spacing positioning device, comprising a base (1), characterized in that: A deflection plate (2) is provided on the base (1), and positioning and lifting components are provided on both sides of the deflection plate (2); The positioning and lifting assembly includes a support frame (3) set on a deflection plate (2), a slide plate (4) is slidably connected to the middle of the support frame (3), a plurality of variable pitch grooves (5) are opened through the slide plate (4), and each variable pitch groove (5) is radially distributed along the axis of the slide plate (4). Sliding columns (8) are slidably connected in the multiple slide plates (4), and each sliding column (8) is provided with a support rod (6). The support rod (6) is displaced on the slide plate (4) by the guide of the variable pitch groove (5) through the sliding column (8) so that the support rods (6) converge and spread. An adjustment groove (7) is provided on the support rod (6). A first locking rod (9) is slidably connected in the adjustment groove (7). A second locking rod (10) is hinged to one side of the top of the first locking rod (9). A rotating wheel (11) is rotatably connected to the middle of the first locking rod (9). An abutment block (12) is hinged on the second locking rod (10). The bottom end of the abutment block (12) abuts against the rotating wheel (11). By moving the second locking rod (10), the abutment block (12) is displaced, driving the rotating wheel (11) to rotate. An electric push rod (18) is provided inside the base (1). The output end of the electric push rod (18) is hinged to a first traction rod (19), and one end of the first traction rod (19) is hinged to a second traction rod (20). The second traction rod (20) is hinged to the base (1), and a third traction rod (21) is hinged to one end of the second traction rod (20). One end of the third traction rod (21) extends to the deflection plate (2). The third traction rod (21) is hinged to the deflection plate (2). The end of the deflection plate (2) away from the third traction rod (21) extends to the base (1) and is hinged to the base (1). The first traction rod (19) is driven by the electric push rod (18) to move and pull the second traction rod (20) to deflect. The deflection of the second traction rod (20) drives the third traction rod (21) to pull the deflection plate (2) to deflect. This is used to adjust the position of the positioning and lifting components. The positioning and lifting components on both sides of the deflection plate (2) can realize the positioning of the steel bars in the same plane. The original positioning and lifting components on both sides of the deflection plate (2) can position the bottom or middle layer steel bars. The newly added first locking rod (9) and second locking rod (10) at the top of the second traction rod (20) and the third traction rod (21) and their internal structure can position the upper layer steel bars at different heights according to the length of the traction rod and the deflection angle, so as to realize the synchronous positioning of multiple layers of steel bars without the need to build an additional support frame.

2. The rebar spacing positioning device according to claim 1, characterized in that: The positioning and lifting assembly also includes a hinge rod (13) at the bottom of the second locking rod (10). The hinge rod (13) is hinged to the second locking rod (10). The bottom end of the hinge rod (13) extends to the rotating wheel (11). The hinge rod (13) is driven to move by pressing down the second locking rod (10) to pull the rotating wheel (11) to rotate.

3. The rebar spacing positioning device according to claim 1, characterized in that: The rotating wheel (11) has a locking tooth on one side and an extension rod (14) on the other side. The extension rod (14) has a first positioning groove (15) and a second positioning groove (16) on one end of the first locking rod (9).

4. The rebar spacing positioning device according to claim 3, characterized in that: The second positioning groove (16) is located at the top of the first positioning groove (15). The extension rod (14) and the rotating wheel (11) rotate axially along the connection between the rotating wheel (11) and the first locking rod (9) to make the extension rod (14) move closer to the second positioning groove (16) to clamp the steel bar. A torsion spring is provided at the connection between the abutment block (12) and the second locking rod (10). When the abutment block (12) is deflected by the torsion spring, the torsion spring is compressed. The elasticity of the torsion spring drives the abutment block (12) to reset, so that the bottom end of the abutment block (12) can be continuously locked on the locking teeth.

5. The rebar spacing positioning device according to claim 1, characterized in that: The bottom of the support frame (3) is slidably connected to an adjusting rod (17). The adjusting rod (17) is installed at the bottom of the support frame (3) by a screw, and one end of the adjusting rod (17) extends to the slide plate (4). Rotating the screw drives the adjusting rod (17) to move the slide plate (4) so ​​that each support rod (6) can be adjusted by the sliding column (8) and the pitch groove (5).

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