Adjustable spacing reinforcing bar alignment fixture

By using a gear slide rail assembly and a gripper structure driven by a clamping cylinder, the problem of insufficient rigidity in existing rebar alignment and positioning fixtures is solved, enabling rapid adjustment of rebar spacing and height, and improving construction efficiency.

CN224413158UActive Publication Date: 2026-06-26CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD
Filing Date
2025-07-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing rebar alignment and positioning clamps lack rigidity in resisting lateral and torsional forces, have poor structural adaptability, and affect construction progress.

Method used

The gripper structure, driven by a gear slide rail assembly and a clamping cylinder, combined with a support cylinder and a level, enables adjustable spacing and height adjustment to adapt to different steel bar specifications and construction scenarios.

Benefits of technology

The rigidity and adaptability of the clamps have been improved, allowing for quick adjustment of the spacing and height of the reinforcing bars to meet different engineering needs and improve construction efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a positioning clamp belongs to building construction technical field, concretely is a reinforcing bar alignment positioning clamp of adjustable spacing, including main body shell and upper layer frame, the upper layer frame sets up the top of main body shell still includes clamping subassembly and horizontal subassembly, gear slide rail group, gear slide rail group sets up in the both sides of upper layer frame, a plurality of sliding blocks are installed on the surface of gear slide rail group, the utility model reached the effect that the different length reinforcing bar clamping demand was satisfied, the construction progress was accelerated, the telescopic rod structure of the prior art patent was not usually as rigid frame of integral type in resisting lateral force and torsional force, the structure rigidity was deficient, the installation adaptability was poor, mainly relied on manual rotation to realize clamping or loosening drive threaded rod of rotating wheel, influenced construction progress's problem.
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Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to an adjustable spacing rebar alignment and positioning clamp. Background Technology

[0002] During use, steel bars are limited in length due to the specifications of steel production and transportation conditions. To ensure the integrity and continuity of the structure and enhance the overall load-bearing capacity of the building, steel bar alignment clamps are usually used to align and fix the steel bars.

[0003] A search revealed Chinese patent CN211162693U, which discloses an alignment and positioning fixture for welding processing. The fixture includes a fixture table, a left fixed seat, and a right fixed seat. The left fixed seat is located on the upper left side of the fixture table and has anti-slip protrusions inside. A threaded rod is located inside the lower end of the left fixed seat, with a rotating wheel at its front end. A movable block is located at the lower end of the left fixed seat and is mounted on a sliding rod. A fixed sleeve is connected to the right end of the left fixed seat, and a telescopic rod is located inside the fixed sleeve. A limit block is mounted on the left end of the telescopic rod, and the right end of the telescopic rod is fixed to the left end of the right fixed seat. A right movable rod is mounted on the telescopic rod. This alignment and positioning fixture for welding processing can conveniently and simultaneously fix two steel pipes, improving the applicability of the positioning fixture and facilitating the alignment of the centers of two steel pipes during welding at the pipe joint.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The telescopic rod structures described in the aforementioned patents are generally inferior to integral rigid frames in resisting lateral and torsional forces. They lack structural rigidity, have poor installation adaptability, and mainly rely on manually rotating a wheel to drive a threaded rod to clamp or loosen, which affects the construction progress and thus has certain limitations. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes an adjustable spacing rebar alignment and positioning clamp to meet the clamping requirements of rebars of different lengths and accelerate construction progress.

[0007] The technical solution to achieve the purpose of this utility model is: an adjustable spacing rebar alignment and positioning clamp, including a main shell and an upper frame, wherein the upper frame is disposed above the main shell, and also includes a clamping component and a horizontal component;

[0008] A gear slide rail assembly is provided on both sides of the upper frame, and multiple sliders are slidably mounted on the surface of the gear slide rail assembly.

[0009] The clamping assembly includes a clamping cylinder fixedly installed on one side of the slider, and a gripper mounting base is fixedly installed on the output end of the clamping cylinder;

[0010] The horizontal component includes a mounting hole on one side of the surface of the upper frame, and a lead screw is disposed inside the mounting hole.

[0011] Preferably, a plurality of support seats are fixedly installed on the surface of the main body shell, and a support cylinder is fixedly installed on the surface of each support seat. The support cylinder is located below the upper frame. A control module is fixedly installed on one side inside the main body shell. A moving wheel is fixedly installed on the bottom of the main body shell. A bottom frame is fixedly installed between the moving wheel and the main body shell.

[0012] Preferably, slide rail covers are fixedly installed on both sides of the top of the gear slide rail assembly, a storage box is fixedly installed between the slide rail covers, a push rod is fixedly installed on one side of the slide rail cover, and an anti-roll cage is provided on the surface of the slide rail cover.

[0013] Preferably, the other end of the gripper mounting base is engaged with a first gripper and a second gripper, the first gripper and the second gripper are engaged vertically, and a limit ring is provided on the top of the first gripper.

[0014] Preferably, a plurality of first spring adjusting pins are fixedly installed on the surface of the first gripper, and a plurality of second spring adjusting pins are fixedly installed on the surface of the second gripper. Springs are sleeved on both the first and second spring adjusting pins, and spring fixing pins are provided on both sides of the gripper mounting base. The springs are fixedly connected to the spring fixing pins.

[0015] Preferably, a handwheel is fixedly installed on the top of the lead screw, the handwheel abuts against the surface of the upper frame, a nut is threaded onto the lead screw, a level is fixedly installed on one side of the nut, and bearing seats are fixedly installed at both ends of the lead screw, one of the bearing seats is fixedly installed inside the main body shell, and the other bearing seat is fixedly installed on the upper frame.

[0016] Compared with existing technologies, the significant advantages of this invention are:

[0017] Firstly, the gear slide rail assembly on both sides of the upper frame of this utility model, together with multiple sets of sliders, constitutes an adjustment structure. Construction personnel can adjust the distance between each clamping component by mechanically driving the gears and moving the sliders freely on the slide rails according to the specifications of the reinforcing bars and the actual spacing requirements. This adapts to the arrangement requirements of reinforcing bars in different engineering scenarios. Whether it is the sparse reinforcing bar layout of a long-span bridge or the dense reinforcing bar array of the core tube of a high-rise building, this clamp can complete the operation.

[0018] Secondly, with this utility model, construction workers can rotate the screw by turning the handwheel, which in turn moves the nut up and down. The level provides real-time feedback on the alignment status of the reinforcing bars, and any deviations can be corrected immediately to ensure that the reinforcing bars are at the same height and meet construction requirements. Height adjustment is achieved by the support cylinder inside the main shell. The support seat at the shaft end of the support cylinder is connected to the upper frame. Through the extension and retraction of the cylinder, the height of the upper frame can be adjusted, effectively improving the versatility and ease of operation of the clamp in the construction environment.

[0019] This invention solves the problems of existing patented telescopic rod structures, which are generally inferior to integral rigid frames in resisting lateral and torsional forces, have insufficient structural rigidity, poor installation adaptability, and mainly rely on manually rotating a wheel to drive the threaded rod to achieve clamping or loosening, thus affecting the construction progress. Attached Figure Description

[0020] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure provided by this utility model;

[0022] Figure 2 This is a schematic diagram of the overall disassembled structure provided by this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the clamping component provided by this utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the clamping component provided by this utility model;

[0025] Figure 5 This utility model provides Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 6 This utility model provides Figure 2 Enlarged structural diagram at point B.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Main body shell; 2. Slide rail cover; 3. Push rod; 4. Moving wheel; 5. Bottom frame; 6. Roll cage; 7. Storage box; 8. Upper frame; 9. Control module; 10. Level; 11. Support cylinder; 12. Gear slide rail assembly; 13. Slider; 14. Support base; 15. Clamping cylinder; 16. Claw mounting base; 17. Spring; 18. Limit ring; 19. First claw; 20. Nut; 21. Second claw; 22. Second spring adjusting pin; 23. First spring adjusting pin; 24. Mounting hole; 25. Handwheel; 27. Bearing seat; 28. Lead screw. Detailed Implementation

[0029] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0030] This utility model provides an adjustable-spacing rebar alignment and positioning clamp through improvements. The technical solution of this utility model is as follows:

[0031] like Figures 1-6 As shown, an adjustable spacing rebar alignment and positioning clamp includes a main shell 1 and an upper frame 8. The upper frame 8 is located above the main shell 1 and has an overall U-shaped structure to facilitate the installation of subsequent components. It also includes a clamping component and a horizontal component.

[0032] Gear slide rail assembly 12 is set on both sides of the upper frame 8. Multiple sliders 13 are slidably installed on the surface of gear slide rail assembly 12. The sliders 13 can slide freely along the slide rail assembly. Each slider 13 is equipped with a clamping component at one end for fixing the reinforcing bar.

[0033] The clamping assembly includes a clamping cylinder 15 fixedly installed on one side of the slider 13. The output end of the clamping cylinder 15 is fixedly installed with a claw mounting seat 16. The clamping assemblies on both sides do not interfere with each other, and the clamping range is larger, which can meet the fixing needs of steel bars of different diameters.

[0034] The horizontal component includes a mounting hole 24 on one side of the surface of the upper frame 8. A lead screw 28 is installed inside the mounting hole 24. The two ends of the lead screw 28 are respectively inserted into two bearing seats 27 to ensure that the lead screw 28 can rotate stably.

[0035] Furthermore, multiple support seats 14 are fixedly installed on the surface of the main body shell 1, and a support cylinder 11 is fixedly installed on the surface of each support seat 14. The support cylinder 11 is located below the upper frame 8. A control module 9 is fixedly installed on one side inside the main body shell 1. A moving wheel 4 is fixedly installed on the bottom of the main body shell 1. A bottom frame 5 is fixedly installed between the moving wheel 4 and the main body shell 1. Through telescopic movement, the upper frame 8 can be pushed up or down, thereby adjusting the height between the upper frame 8 and the main body shell 1 to adapt to the requirements of the rebar positioning height under different construction scenarios.

[0036] Furthermore, slide rail covers 2 are fixedly installed on both sides of the top of the gear slide rail assembly 12, and storage boxes 7 are fixedly installed between the slide rail covers 2. A push rod 3 is fixedly installed on one side of the slide rail cover 2, and an anti-roll rack 6 is provided on the surface of the slide rail cover 2 to facilitate the storage of tools and prevent the steel bars placed on the clamp from rolling and slipping off.

[0037] As a further embodiment of this utility model, the other end of the gripper mounting base 16 is engaged with a first gripper 19 and a second gripper 21. The first gripper 19 and the second gripper 21 are engaged vertically. A limiting ring 18 is provided on the top of the first gripper 19. The limiting ring 18 fixes the first gripper 19 and the second gripper 21 below the through groove, so as to avoid mutual avoidance with the clamping assembly placed upside down on the opposite side.

[0038] Furthermore, multiple first spring adjusting pins 23 are fixedly installed on the surface of the first gripper 19, and multiple second spring adjusting pins 22 are fixedly installed on the surface of the second gripper 21. Springs 17 are fitted on both the first spring adjusting pins 23 and the second spring adjusting pins 22. Spring fixing pins are provided on both sides of the gripper mounting base 16. The springs 17 are fixedly connected to the spring fixing pins. Depending on the diameter of the reinforcing bar and the spacing of the reinforcing bar, one end of the spring 17 can be selected to be fitted on different first spring adjusting pins 23 and second spring adjusting pins 22, thus expanding the application environment of the device.

[0039] Furthermore, a handwheel 25 is fixedly installed on the top of the lead screw 28, and the handwheel 25 abuts against the surface of the upper frame 8. A nut 20 is threaded onto the lead screw 28, and a level 10 is fixedly installed on one side of the nut 20. Bearing seats 27 are fixedly installed at both ends of the lead screw 28. One bearing seat 27 is fixedly installed inside the main body shell 1, and the other bearing seat 27 is fixedly installed on the upper frame 8. The level 10 is used to observe the horizontal state of the reinforcing bars to ensure that the reinforcing bars are tied at the same level and to ensure consistent connection strength.

[0040] The specific working method is as follows: the construction personnel first push the clamp to the construction site, align the U-shaped groove with the steel bars that need to be tied and extended, set the steel bar spacing, and the control module 9 controls the gears on the gear slide rail assembly 12 to drive the slider 13 to move along the slide rail. The clamping components on both sides move synchronously to adapt to the requirements of different projects for steel bar spacing. Subsequently, the rebar that needs to be extended is placed between the first jaw 19 and the second jaw 21 of the clamping assembly. The clamping cylinder 15 is activated, and the jaw mounting seat 16 drives the jaw to move, fixing the rebar from multiple directions. At the same time, the spring 17 on the jaw provides elastic force through the first spring adjusting pin 23 and the second spring adjusting pin 22, ensuring that rebars of different diameters can be stably fixed and avoiding the impact of rebar swaying on subsequent rebar binding. The overlapping length of the rebars and rebar bindings should be consistent. The construction personnel turn the handwheel 25, which drives the lead screw 28 to rotate. The lead screw 28 drives the nut 20 to move along the lead screw 28. The level 10 installed on one side of the nut 20 provides a reference for the height of the rebar, ensuring the overlapping length. When encountering construction scenarios with different heights, the construction personnel activate the corresponding command in the control module 9, and the support cylinder 11 begins to extend and retract. The support seat 14 at its shaft end moves inside the main body shell 1, driving the upper frame 8 to rise or fall, thereby adjusting the height of the entire clamp and the rebar to meet the clamping requirements of rebars of different lengths.

[0041] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. An adjustable-spacing rebar alignment and positioning clamp, comprising a main body shell (1) and an upper frame (8), characterized in that: The upper frame (8) is disposed above the main body shell (1) and also includes; Gear slide rail assembly (12), the gear slide rail assembly (12) is arranged on both sides of the upper frame (8), and multiple sliders (13) are slidably installed on the surface of the gear slide rail assembly (12); The clamping assembly includes a clamping cylinder (15) fixedly installed on one side of the slider (13), and a gripper mounting base (16) is fixedly installed on the output end of the clamping cylinder (15). The horizontal component includes a mounting hole (24) formed on one side of the surface of the upper frame (8), and a lead screw (28) is disposed inside the mounting hole (24).

2. The adjustable spacing rebar alignment and positioning clamp according to claim 1, characterized in that: Multiple support seats (14) are fixedly installed on the surface of the main body shell (1). Each support seat (14) is fixedly installed with a support cylinder (11). The support cylinder (11) is located below the upper frame (8). A control module (9) is fixedly installed on one side inside the main body shell (1). A moving wheel (4) is fixedly installed at the bottom of the main body shell (1). A bottom frame (5) is fixedly installed between the moving wheel (4) and the main body shell (1).

3. The adjustable spacing rebar alignment and positioning clamp according to claim 1, characterized in that: The gear slide rail assembly (12) has slide rail covers (2) fixedly installed on both sides of the top. A storage box (7) is fixedly installed between the slide rail covers (2). A push rod (3) is fixedly installed on one side of the slide rail cover (2). An anti-roll cage (6) is provided on the surface of the slide rail cover (2).

4. The adjustable spacing rebar alignment and positioning clamp according to claim 1, characterized in that: The other end of the gripper mounting base (16) is engaged with a first gripper (19) and a second gripper (21). The first gripper (19) and the second gripper (21) are engaged vertically. A limit ring (18) is provided on the top of the first gripper (19).

5. The adjustable spacing rebar alignment and positioning clamp according to claim 4, characterized in that: The surface of the first gripper (19) is fixedly equipped with a plurality of first spring adjusting pins (23), and the surface of the second gripper (21) is fixedly equipped with a plurality of second spring adjusting pins (22). A spring (17) is sleeved on both the first spring adjusting pin (23) and the second spring adjusting pin (22). Spring fixing pins are provided on both sides of the gripper mounting base (16), and the spring (17) is fixedly connected to the spring fixing pin.

6. A rebar alignment and positioning clamp with adjustable spacing according to any one of claims 1-4, characterized in that: A handwheel (25) is fixedly installed on the top of the lead screw (28), and the handwheel (25) abuts against the surface of the upper frame (8). A nut (20) is threaded on the lead screw (28), and a level (10) is fixedly installed on one side of the nut (20). Bearing seats (27) are fixedly installed at both ends of the lead screw (28). One of the bearing seats (27) is fixedly installed inside the main body shell (1), and the other bearing seat (27) is fixedly installed on the upper frame (8).