Bending device for detecting strength of reinforcing steel bar

Abstract

The utility model relates to the technical field of reinforcing steel bar detection and bending, in particular to a bending device for reinforcing steel bar strength detection, which comprises a base for supporting, a vertically arranged support frame is mounted in the middle of the base, and a bending die is mounted in the middle of the top surface of the support frame. Supporting legs which are vertically arranged are arranged on the two sides of the bottom end of the base respectively. The steel bar bending device has the advantages that the supporting frame, the bending die, the mounting frame and the bending roller are arranged, the fixing rod is mounted on one side of the top face of the supporting frame, the two clamping assemblies are mounted on the side face of the supporting frame, and the operating handle is mounted at the end of the mounting frame, so that a steel bar is placed in the bending die and fixed through the two clamping assemblies; and the mounting frame is rotated through the operating handle, so that the bending roller rotates around the top end of the bending mold, the purpose of quickly bending and detecting the reinforcing steel bar is conveniently achieved, the overall structure is simple, and a user can conveniently operate and use the device.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar detection and bending, in particular to a bending device for steel bar strength detection. Background Technique

[0002] Steel bars play an extremely important role in reinforced concrete structures. The correctness of the inspection, analysis, and judgment results of concrete steel bars is directly closely related to the construction quality of the entire building structure project. Currently, after the production of steel bars or before leaving the factory, it is generally necessary to conduct strength tests on the steel bars of this batch after production. For the existing mechanical property tests of steel bars, the mechanical properties that generally need to be measured for the quality standards of steel bars include yield point, tensile strength, elongation rate, cold bending performance, etc. And the steel bar bending test is another important test item in the steel bar laboratory.

[0003] Due to the requirements of engineering construction, it is necessary to conduct simple strength bending tests on steel bars at the construction site. For this purpose, a simple bending device needs to be used to bend the steel bars, so as to facilitate rapid bending tests on steel bars at the construction site. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a bending device for steel bar strength detection, effectively solving the deficiencies of the prior art.

[0005] To achieve the above purpose, an embodiment of one aspect of the utility model provides a bending device for steel bar strength detection, including a base for support. A vertically placed support frame is installed in the middle of the base. A bending die is installed in the middle of the top surface of the support frame. Support legs vertically placed are respectively arranged on both sides of its bottom end. A rotatable mounting frame is installed at the top ends of the adjacent sides of the two support legs. A bending roller is installed in the middle of the mounting frame. An operation handle is installed in the middle of one end of the mounting frame. A fixing rod is installed on the other side of the top surface of the support frame, and one end of it bends vertically upward. Two clamping components for clamping the steel bar are installed on one side of the fixing rod.

[0006] Preferably, from any of the above solutions, a limiting shaft is installed on one side of the top surface of the base away from the operation handle. A plurality of counterweight blocks are slidably installed on the outer wall of the limiting shaft. The bottom end of the limiting shaft in this solution is fixedly connected to the top surface of the base by welding and is vertically placed with respect to the top surface of the base. Thereby, an installation position is provided for the plurality of counterweight blocks, increasing the weight of one end of the base. Further, it is convenient for the user to hold the operation handle to bend the steel bar, and then simply measure the strength of the steel bar. At the same time, observe whether there are cracks at the bending position of the steel bar. At the same time, the position of the base close to the operator and one side of the middle part are designed with hollowing, so as to reduce the relative weight of the base, facilitate single carrying, and on-site assembly.

[0007] Preferably, in any of the above solutions, a concave-shaped clamping block for limiting the end of the steel bar is installed in the middle of the support frame near the top surface of the bending die. By using this solution, it is convenient to limit the position of the steel bar placed on the top surface of the support frame. At the same time, the bottom ends of both the bending die and the concave-shaped clamping block are fixedly connected to the top end of the support frame through bolts. Therefore, it is possible to reasonably select a bending die, a concave-shaped clamping block, and a bending roller that match the outer diameter of the steel bar, so as to conduct a simple bending test on steel bars with different outer diameters and improve its scope of application.

[0008] Preferably, in any of the above solutions, the outer shapes of the two support legs are both L-shaped, and reinforcing rib plates are installed on the inner walls of the two support legs. There is a gap between the two support legs and the two side surfaces of the bending die. The reinforcing rib plates inside the two support legs in this solution can effectively improve their structural strength. At the same time, the bottom ends of the two support legs are fixedly connected to the top surface of the support frame through bolts. By adopting a detachable structure, it is convenient to process each part separately, and it is also convenient for pre-assembly and later disassembly, and reduces its structural size, which is convenient for packaging, carrying, and transportation. There is enough distance between the two support legs and the bending die, which is convenient for the mounting rack to rotate at a certain angle.

[0009] Preferably, in any of the above solutions, the position of the mounting rack near the bending roller is bent obliquely upward. By using this solution, it is convenient to avoid the operation handle being closely structured with the steel bar at the initial stage of bending the steel bar. The bending of the mounting rack causes the operation handle to tilt away from the steel bar, thereby providing a holding position for the user and facilitating pulling the operation handle to conduct a bending test on the steel bar.

[0010] Preferably, in any of the above solutions, a concave-shaped groove adapted to the steel bar is provided in the middle of the bending roller, and the bending roller is rotatably connected to the middle of the mounting rack through a pin shaft. By using this solution, it is convenient to make the concave-shaped groove cooperate with the outer wall of the steel bar. At the same time, a detachable structure is adopted between the bending roller and the mounting rack. Therefore, it is convenient to later reasonably select a bending roller with concave-shaped grooves of different sizes according to the outer diameter of the steel bar, and then cooperate with the bending die and the concave-shaped clamping block to achieve the purpose of conducting a bending test on steel bars with different outer diameters.

[0011] Preferably, according to any of the above solutions, the clamping assembly includes a lead screw, a handwheel, and a pressing block. The lead screw is threadedly connected to the fixed rod. The handwheel is fixedly connected to one end of the lead screw. The pressing block is rotatably connected to the other end of the lead screw. An arc-shaped groove adapted to the steel bar is provided on the end face of the pressing block. Using this solution facilitates the formation of a simple clamping structure. At the same time, the arc-shaped groove is adapted to the steel bar to ensure stability during the bending process. At the same time, the pressing block rotates relative to the lead screw, so that it is convenient for the user to rotate the handwheel to push the pressing block with the lead screw, realizing the pressing and fixing of the steel bar.

[0012] The present utility model has the following advantages:

[0013] 1. For the bending device for steel bar strength detection, by setting a support frame, a bending die, a mounting frame, and bending rollers, a fixed rod is installed on one side of the top surface of the support frame, and two clamping assemblies are installed on its side. An operating handle is installed at the end of the mounting frame. Then, the steel bar is placed in the bending die, and the steel bar is fixed by the two clamping assemblies. By rotating the mounting frame with the operating handle, the bending rollers rotate around the top end of the bending die, facilitating the rapid bending detection of the steel bar. The overall structure is simple and convenient for the user to operate.

[0014] 2. For the bending device for steel bar strength detection, by setting a base, a limiting shaft is installed on one side of the top surface of the base, and a plurality of counterweight blocks are installed on its outer wall. At the same time, the support frame is installed in the middle of the base, thus ensuring the stability of the entire device during the steel bar bending process. At the same time, the position of the mounting frame close to the bending rollers is tilted upward, thus avoiding movement interference between the steel bar and the operating handle during the vertical stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a sectional structure schematic diagram of the whole of the present utility model;

[0017] Figure 3 is an assembly structure schematic diagram of the base and the support frame of the present utility model;

[0018] Figure 4 is a schematic diagram of the mounting frame structure of the present utility model;

[0019] Figure 5 is an assembly structure schematic diagram of the clamping assembly of the present utility model.

[0020] In the figure: 1 - base, 2 - counterweight, 3 - limit shaft, 4 - clamping assembly, 401 - lead screw, 402 - handwheel, 403 - pressing block, 5 - fixed rod, 6 - bending die, 7 - bending roller, 8 - operating handle, 9 - mounting bracket, 10 - support leg, 11 - support frame, 12 - concave clamping block, 13 - arc groove. Detailed implementation manner

[0021] The following further describes the present utility model in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following description.

[0022] As Figures 1 to 5 shown, a bending device for steel bar strength detection includes a base 1 for support. A vertically placed support frame 11 is installed in the middle of the base 1. A bending die 6 is installed in the middle of the top surface of the support frame 11. Support legs 10 vertically placed are respectively arranged on both sides of its bottom end. A rotatable mounting bracket 9 is installed at the top of the adjacent sides of the two support legs 10. A bending roller 7 is installed in the middle of the mounting bracket 9. An operating handle 8 is installed in the middle of one end of the mounting bracket 9. On the other side of the top surface of the support frame 11, a fixed rod 5 is installed, and one end of it is bent vertically upward. Two clamping assemblies 4 for clamping steel bars are installed on one side of the fixed rod 5.

[0023] A limit shaft 3 is installed on one side of the top surface of the base 1 away from the operating handle 8. A plurality of counterweights 2 are slidably installed on the outer wall of the limit shaft 3. As an optional technical solution of the present utility model, the bottom end of the limit shaft 3 is fixedly connected to the top surface of the base 1 by welding and is vertically placed with respect to the top surface of the base 1, thereby providing an installation position for the plurality of counterweights 2, increasing the weight of one end of the base 1, facilitating the user to hold the operating handle 8 to bend the steel bar, and thus simply measuring the strength of the steel bar. At the same time, observe whether there are cracks at the bending position of the steel bar. At the same time, the positions of the base 1 close to the operator and on one side of the middle are designed with hollowing, so as to reduce the relative weight of the base 1, facilitate separate carrying and on-site assembly.

[0024] A concave clamping block 12 for limiting the end of the steel bar is installed in the middle of the top surface of the support frame 11 close to the bending die 6. As an optional technical solution of the present utility model, this facilitates limiting the position of the steel bar placed on the top surface of the support frame 11. At the same time, the bottom ends of the bending die 6 and the concave clamping block 12 are fixedly connected to the top end of the support frame 11 by bolts. Therefore, the bending die 6, the concave clamping block 12 and the bending roller 7 that match it can be reasonably selected according to the outer diameter of the steel bar, so as to perform a simple bending test on steel bars with different outer diameters and improve its application range.

[0025] The outer shapes of the two support legs 10 are both L-shaped. Reinforcing rib plates are installed on the inner walls of the two support legs 10. There is a gap between the two support legs 10 and the two side surfaces of the bending die 6. As an alternative technical solution of the present utility model, the reinforcing rib plates inside the two support legs 10 can effectively improve the structural strength of the two. At the same time, the bottom ends of the two support legs 10 are fixedly connected to the top surface of the support frame 11 through bolts. By adopting a detachable structure, it is convenient to process each part separately, and it is also convenient for pre-assembly and later disassembly, and reduces its structural size, which is convenient for packaging, carrying and transportation. There is enough distance between the two support legs 10 and the bending die 6, which is convenient for the mounting bracket 9 to rotate at a certain angle.

[0026] The position of the mounting bracket 9 close to the bending roller 7 is bent obliquely upward. As an alternative technical solution of the present utility model, this is convenient for avoiding the tight structure between the operating handle 8 and the steel bar at the initial stage of bending the steel bar. The bending of the mounting bracket 9 makes the operating handle 8 tilt away from the steel bar, thereby providing a holding position for the user and facilitating pulling the operating handle 8 to perform a bending test on the steel bar.

[0027] A concave groove adapted to the steel bar is provided in the middle of the bending roller 7. The bending roller 7 is rotatably connected to the middle of the mounting bracket 9 through a pin shaft. As an alternative technical solution of the present utility model, this is convenient for the concave groove to cooperate with the outer wall of the steel bar. At the same time, a detachable structure is adopted between the bending roller 7 and the mounting bracket 9. Furthermore, it is convenient to reasonably select bending rollers 7 with concave grooves of different sizes according to the outer diameter of the steel bar in the later stage, and then cooperate with the bending die 6 and the concave clamping block 12 to achieve the purpose of bending tests on steel bars with different outer diameters.

[0028] The clamping assembly 4 includes a lead screw 401, a hand wheel 402 and a pressing block 403. The lead screw 401 is threadedly connected to the fixed rod 5. The hand wheel 402 is fixedly connected to one end of the lead screw 401. The pressing block 403 is rotatably connected to the other end of the lead screw 401. An arc groove 13 adapted to the steel bar is provided on the end face of the pressing block 403. As an alternative technical solution of the present utility model, this is convenient for forming a simple clamping structure. At the same time, the arc groove 13 is convenient for matching with the steel bar to ensure stability during the bending process. At the same time, relative rotation occurs between the pressing block 403 and the lead screw 401. Furthermore, it is convenient for the user to rotate the hand wheel 402 to push the pressing block 403 by the lead screw 401 to realize the pressing and fixing of the steel bar.

[0029] The bending device for steel bar strength detection needs the following steps when in use:

[0030] 1) When in use, rotate the mounting bracket 9 to the position of the fixed rod 5, and at the same time pass the steel bar through between the bending die 6 and the bending roller 7, and the bottom end enters between the concave clamping blocks 12;

[0031] 2) Rotate the two handwheels 402 to drive the relative rotation of the lead screw 401 and the fixed rod 5, and push the pressing block 403 to press the steel bar.

[0032] 3) Hold the end of the operating handle 8 and pull it in the direction of the operator.

[0033] 4) The bending roller 7 rotates along the outer wall of the top end of the bending die 6 to bend the steel bar.

[0034] In summary, when in use, by setting the support frame 11, the bending die 6, the mounting frame 9 and the bending roller 7, a fixed rod 5 is installed on one side of the top surface of the support frame 11, and two clamping assemblies are installed on its side surface. The end of the mounting frame 9 is installed with an operating handle 8. Then, place the steel bar in the bending die 6, fix the steel bar through the two clamping assemblies 4, rotate the mounting frame 9 through the operating handle 8, and make the bending roller 7 rotate around the top end of the bending die 6, which is convenient to achieve the purpose of quickly detecting the bending of the steel bar. The overall structure is simple and convenient for the user to operate. By further setting the base 1, a limiting shaft 3 is installed on one side of the top surface of the base, and a plurality of counterweight blocks 2 are installed on its outer wall. At the same time, the support frame 11 is installed in the middle of the base 1, so as to ensure the stability of the whole device during the bending process of the steel bar. At the same time, the position of the mounting frame 9 close to the bending roller 7 is tilted upward, so as to avoid the movement interference between the steel bar and the operating handle 8 in the vertical stage.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending device for steel bar strength detection, characterized in that: The invention comprises a base (1) for supporting, wherein a vertically placed support frame (11) is installed in the middle of the base (1), a bending mold (6) is installed in the middle of the top surface of the support frame (11), and vertically placed support legs (10) are respectively arranged on both sides of the bottom end thereof, a rotatable mounting frame (9) is installed at the top of the adjacent side surfaces of the two support legs (10), a bending roller (7) is installed in the middle of the mounting frame (9), an operating handle (8) is installed in the middle of one end of the mounting frame (9), a fixing rod (5) is installed on the other side of the top surface of the support frame (11), one end of which is bent vertically upward, and two clamping assemblies (4) for clamping steel bars are installed on one side of the fixing rod (5).

2. A bending device for steel bar strength detection according to claim 1, characterized in that: A limiting shaft (3) is installed on a side of the base (1) away from the top surface of the operating handle (8), and a plurality of counterweight blocks (2) are slidably installed on the outer wall of the limiting shaft (3).

3. A bending device for steel bar strength detection according to claim 2, characterized in that: A concave clamping block (12) for limiting the end of the steel bar is installed in the middle of the support frame (11) close to the top surface of the bending mold (6).

4. A bending device for steel bar strength detection according to claim 3, characterized in that: The two support legs (10) are both L-shaped in appearance, the inner walls of the two support legs (10) are both provided with reinforcing ribs, and a gap is left between the two support legs (10) and the two side surfaces of the bending mold (6).

5. A bending device for steel bar strength detection according to claim 4, characterized in that: The mounting frame (9) is bent obliquely upward at a position close to the bending roller (7).

6. A bending device for steel bar strength detection according to claim 5, characterized in that: The middle part of the bending roller (7) is provided with a concave groove adapted to the steel bar, and the bending roller (7) is rotatably connected to the middle part of the mounting frame (9) via a pin shaft.

7. A bending device for steel bar strength detection according to claim 6, characterized in that: The clamping assembly (4) comprises a screw rod (401), a hand wheel (402) and a clamping block (403); the screw rod (401) is threadedly connected to the fixing rod (5); the hand wheel (402) is fixedly connected to one end of the screw rod (401); the clamping block (403) is rotatably connected to the other end of the screw rod (401); and an arc groove (13) adapted to the steel bar is provided on the end surface of the clamping block (403).

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