Spacing-adjustable steel bar clamp

Abstract

The utility model belongs to the field of steel bar construction, and particularly relates to a spacing-adjustable steel bar fixture which comprises an outer fixture and an inner fixture, the outer fixture and the inner fixture are both U-shaped strip frames, a plurality of arc-shaped clamping grooves are formed in the edges of the right sides of the outer fixture and the inner fixture, and the arc-shaped clamping grooves are communicated with the arc-shaped clamping grooves. The distance between every two adjacent arc-shaped clamping grooves in the inner clamping tool is integral multiples of the distance between every two adjacent arc-shaped clamping grooves in the outer clamping tool. U-shaped sliding grooves are symmetrically formed in the two sides of the upper surface of the outer fixture, a handle vertically penetrates through the U-shaped sliding grooves downwards, a round hole for the handle to penetrate through is formed in the inner fixture, and the lower end of the handle is in threaded connection with a sleeve. The reinforcing steel bar position and the reinforcing steel bar spacing are accurately positioned, meanwhile, the qualification rate of a reinforcing steel bar protective layer is improved, tedious manual chiseling is avoided during secondary pouring, the construction time is shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of steel reinforcement construction, and in particular relates to an adjustable spacing steel reinforcement clamp. Background Technology

[0002] Controlling the spacing of reinforcing bars and the thickness of the concrete cover in cast-in-place structures is crucial for the overall structural safety and performance. In reinforcing bar tying, string lines are commonly used to control spacing, and spacers are used to control the concrete cover. However, existing methods are prone to problems such as excessive deviations in reinforcing bar spacing control, low concrete cover pass rates, poor appearance quality of secondary pours, and difficulty in roughening the surface. While some clamps exist for controlling reinforcing bar spacing, most cannot adjust the controlled spacing and are only suitable for one type of reinforcing bar spacing. Therefore, improvements to existing reinforcing bar clamps are necessary. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an adjustable spacing rebar clamp.

[0004] This invention is achieved through the following technical solution:

[0005] An adjustable-spacing rebar clamp includes an outer clamp and an inner clamp, both of which are U-shaped elongated frames. The inner clamp is located inside the outer clamp, and the width of the outer clamp is equal to the thickness of the rebar protective layer. Both the outer and inner clamps have a plurality of evenly distributed arc-shaped grooves on their right edges. The spacing between adjacent arc-shaped grooves on the inner clamp is an integer multiple of the spacing between adjacent arc-shaped grooves on the outer clamp, and the positions of the arc-shaped grooves on the inner clamp correspond to those on the outer clamp. The upper surface of the outer clamp has symmetrically arranged U-shaped sliding grooves on both sides, with a handle passing vertically downward through each groove. The inner clamp has a circular hole through which the handle passes, the diameter of which is equal to the diameter of the handle. A sleeve is threaded to the lower end of the handle, the outer diameter of which is larger than the diameter of the handle. When the handle slides to the right end of the U-shaped sliding groove, the right edge of the inner clamp is flush with the right edge of the outer clamp, and the positions of the arc-shaped grooves on the inner clamp correspond to those on the outer clamp.

[0006] Preferably, the lower surface of the outer clamp is uniformly provided with protrusions.

[0007] Preferably, it also includes a stopper block, which is used to insert into the U-shaped groove to prevent the handle from moving.

[0008] Preferably, the stopper is a rectangular rubber block.

[0009] Preferably, the inner clamp is located in the middle of the outer clamp.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. Precisely locates the position of the reinforcing bars, avoiding problems such as excessive deviation in the spacing of the reinforcing bars and uneven spacing of the reinforcing bars.

[0012] 2. It improved the pass rate of the concrete cover for steel bars, avoiding rework in the later stages.

[0013] 3. The appearance quality of the secondary pouring surface is improved, avoiding tedious manual roughening, shortening construction time, and improving construction efficiency.

[0014] 4. It has low production cost, is easy to operate, can be reused multiple times, and can be used in construction with different rebar spacing. Attached Figure Description

[0015] Figure 1 This is a side view of the fixture in use in this embodiment;

[0016] Figure 2 This is a top view of the fixture in use in this embodiment.

[0017] Figure 3 This is a schematic diagram of the U-shaped sliding groove surface structure when the clamp is used in this embodiment;

[0018] Figure 4 This is a schematic diagram of the convex surface structure of the clamp in use in this embodiment;

[0019] Figure 5 This is a schematic diagram of the side structure of the clamp when it is not in use in this embodiment;

[0020] Figure 6 This is a top view of the structure when the clamp is not in use in this embodiment;

[0021] Figure 7 This is a schematic diagram of the external clamp structure in this embodiment;

[0022] Figure 8 This is a schematic diagram of the clamp structure in this embodiment;

[0023] Figure 9 This is a schematic diagram of the handle structure in this embodiment.

[0024] In the diagram, 1 is the outer clamp, 2 is the inner clamp, 3 is the arc-shaped groove, 4 is the U-shaped slide, 5 is the handle, 6 is the round hole, 7 is the sleeve, 8 is the protrusion, and 9 is the plug. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0026] This embodiment includes an outer clamp 1 and an inner clamp 2, with the inner clamp 2 located inside the outer clamp 1. Both the outer clamp 1 and the inner clamp 2 are U-shaped elongated frames. The width of the outer clamp 1 is equal to the thickness of the concrete cover for the reinforcing bars, allowing for precise control of the concrete cover thickness. Several arc-shaped slots 3 are evenly distributed along the right edge of both the outer clamp 1 and the inner clamp 2. These arc-shaped slots 3 are used to place and position the reinforcing bars; therefore, the spacing between the arc-shaped slots 3 on the outer clamp 1 or the inner clamp 2 is the same as the spacing of the tied reinforcing bars. The spacing between the arc-shaped slots 3 can be adjusted using the inner clamp 2. Therefore, the spacing between adjacent arc-shaped slots 3 on the inner clamp 2 is an integer multiple of the spacing between adjacent arc-shaped slots 3 on the outer clamp 1, and the positions of the arc-shaped slots 3 on the inner clamp 2 correspond to those on the outer clamp 1.

[0027] The specific structure of the inner clamp 2 for adjusting the spacing of the arc-shaped groove 3 is as follows: U-shaped grooves 4 are symmetrically arranged on the front and rear sides of the upper surface of the outer clamp 1. A handle 5 passes vertically downward through the U-shaped groove 4, and the handle 5 can slide within the U-shaped groove 4. A circular hole 6 is provided on the inner clamp 2 for the handle 5 to pass through. The diameter of the circular hole 6 is equal to the diameter of the handle 5. After the handle 5 passes downward through the inner clamp 2, a sleeve 7 is threaded to the lower end of the handle 5. The outer diameter of the sleeve 7 is larger than the diameter of the handle 5. The sleeve 7 can be used to support the inner clamp 2 upwards and also to prevent the handle 5 from detaching from the inner clamp 2 or the outer clamp 1. Sliding the handle 5 within the U-shaped groove 4 can move the inner clamp 2 left, right, forward, and backward. The U-shaped groove 4 includes a left groove and a right groove parallel to the length direction of the outer clamp 1. The left groove and the right groove are connected by a middle groove, which is parallel to the width direction of the outer clamp 1. When the handle 5 slides to the end of the right side groove of the U-shaped groove 4, that is, when it slides to the end of the right side groove away from the middle groove, the right edge of the inner clamp 2 is flush with the right edge of the outer clamp 1. At the same time, the arc-shaped grooves 3 on the inner clamp 2 correspond to the arc-shaped grooves 3 on the outer clamp 1. At this time, the spacing of the arc-shaped grooves 3 that can hold the rebar is the spacing of the arc-shaped grooves 3 of the inner clamp 2, no longer the spacing of the arc-shaped grooves 3 of the outer clamp 1. The edge of the inner clamp 2 will block part of the arc-shaped grooves 3 of the outer clamp 1, preventing the placement of rebar in part of the arc-shaped grooves 3 of the outer clamp 1, thereby adjusting the spacing of the placed rebar. In the attached figure of this embodiment, the spacing between adjacent arc-shaped grooves 3 of the inner clamp 1 is twice the spacing between adjacent arc-shaped grooves 3 of the outer clamp 2. Therefore, in this embodiment, the spacing of the rebar can be doubled by the inner clamp 2 for binding rebars with different spacings. When the handle 5 slides to the end of the left groove of the U-shaped chute 4, the right edge of the inner clamp 2 is located inside the outer clamp 1, to the left of the right edge of the outer clamp 1. At this time, the arc-shaped slots 3 on the outer clamp 1 can all hold the reinforcing bars without being blocked by the inner clamp 2. Therefore, the spacing of the tied reinforcing bars is the spacing of the arc-shaped slots 3 on the outer clamp 1. When the handle 5 slides to the end of the left or right groove of the U-shaped chute 4, preferably, the inner clamp 2 is located in the middle position of the outer clamp 1, that is, the vertical distance between the upper plate of the inner clamp 2 and the upper plate of the outer clamp 1 is equal to the vertical distance between the lower plate of the inner clamp 2 and the lower plate of the outer clamp 1. In practical applications, several types of inner clamps 2 can be made, with different spacings of arc-shaped slots 3, for use in conjunction with the outer clamp 1, which can be used for reinforcing bar tying control at more spacings.

[0028] To prevent the adjusted inner clamp 2 from moving, a stopper 9 is preferably provided. The stopper 9 is inserted into the U-shaped slide groove 4. The stopper 9 is a rectangular rubber block. After the inner clamp 2 is adjusted, the stopper 9 is inserted into the right or left groove of the U-shaped slide groove 4 to prevent the handle 5 from moving, thereby preventing the inner clamp 2 from moving.

[0029] In this embodiment, protrusions 8 are evenly distributed on the lower surface of the outer clamp 1. This eliminates the need to roughen the concrete during the second pour, avoiding tedious manual roughening and improving construction efficiency and the appearance quality of the second pour surface.

[0030] When using the clamps in this embodiment, select the inner clamp 2 according to the requirements. Place the inner clamp 2 inside the outer clamp 1. Pass the handle 5 downward through the U-shaped groove 4, and then continue downward through the round hole 6 on the inner clamp 2 until it exits the inner clamp 2. After exiting the inner clamp 2, screw the sleeve 7 on the lower end of the handle 5. At this time, the sleeve 7 provides support for the inner clamp 2, so that the inner clamp 2 and the outer clamp 1 are not stuck together. Then, install the outer clamp 1 on the upper surface of the outer template of the wall, with the left edge of the outer clamp 1 aligned with the outer template. If the spacing of the reinforcing bars to be tied is equal to the spacing of the arc-shaped grooves 3 on the inner clamp 2, slide the handle 5 to the end of the right groove of the U-shaped slide 4, and insert the plug 9 into the right groove of the U-shaped slide 4 to block the handle 5. At this time, the arc-shaped grooves 3 on the inner clamp 2 are aligned with the arc-shaped grooves 3 on the outer clamp 1. Part of the arc-shaped grooves 3 on the outer clamp 1 are blocked by the inner clamp 2 and cannot be used to insert reinforcing bars. Then, place the reinforcing bars in the unblocked arc-shaped grooves 3. If the spacing of the reinforcing bars to be tied is equal to the spacing of the arc-shaped grooves 3 on the outer clamp 1, slide the handle 5 to the end of the right groove of the U-shaped slide 4, and insert the plug 9 into the right groove of the U-shaped slide 4 to block the handle 5. When the groove spacing is 3, slide the handle 5 to the end of the left groove of the U-shaped groove 4. At this time, the inner clamp 2 does not block the arc groove 3 of the outer clamp 1. The steel bar can be placed in the arc groove 3 on the outer clamp 1. Finally, pour the concrete. The concrete is poured to the lower surface of the outer clamp 1. When the formwork and the clamp of this embodiment are removed later, an uneven surface will be formed on the upper surface of the concrete, forming a rough surface for secondary pouring. There is no need to roughen it again during secondary pouring. At the same time, the thickness of the steel bar protective layer is also effectively controlled.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adjustable spacing reinforcement fixture, characterized by: It includes outer fixture (1) and inner fixture (2), outer fixture (1) and inner fixture (2) are U-shaped long frame, inner fixture (2) is located in outer fixture (1), the width of outer fixture (1) is equal to the thickness of the reinforced protective layer, the right side edge of outer fixture (1) and inner fixture (2) is uniformly provided with a plurality of arc-shaped clamping groove (3), wherein the distance between adjacent arc-shaped clamping groove (3) on inner fixture (2) is an integer times of the distance between adjacent arc-shaped clamping groove (3) on outer fixture (1), and the arc-shaped clamping groove (3) on inner fixture (2) corresponds to the position of the arc-shaped clamping groove (3) on outer fixture (1);The upper surface of outer fixture (1) is symmetrically provided with a U-shaped sliding groove (4), a handle (5) vertically passes through the U-shaped sliding groove (4), the inner fixture (2) is provided with a circular hole (6) for the handle (5) to pass through, the diameter of the circular hole (6) is equal to the diameter of the handle (5), the lower end of the handle (5) is threadedly connected with a sleeve (7), and the outer diameter of the sleeve (7) is greater than the diameter of the handle (5);When the handle (5) is slid to the right side groove end of the U-shaped sliding groove (4), the right side edge of the inner fixture (2) is flush with the right side edge of the outer fixture (1), and the arc-shaped clamping groove (3) on the inner fixture (2) corresponds to the position of the arc-shaped clamping groove (3) on the outer fixture (1).

2. The adjustable spacing rebar gripper of claim 1, wherein: The lower surface of the outer fixture (1) is uniformly provided with convex points (8).

3. A tunable spacing rebar gripper as claimed in claim 1 or 2, wherein: It also includes a plug (9), the plug (9) is used for plugging into the U-shaped sliding groove (4) to prevent the handle (5) from moving.

4. The adjustable spacing rebar gripper of claim 3, wherein: The plug (9) is a rectangular rubber block.

5. The adjustable spacing rebar gripper of claim 1, wherein: The inner fixture (2) is located in the middle of the outer fixture (1).

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