Steel bar bending test device

Abstract

The utility model discloses a steel bar bending test device. The steel bar bending test device comprises a bending fixing assembly, the base plate is fixed on the test platform through screws, the base plate is vertically connected with a central shaft, a U-shaped outer frame of the bending fixed assembly is fixed on the base plate through a cushion block, a U-shaped outer frame of the bending movable assembly is fixed on the edge of the turntable, and the bending fixed assembly and the bending movable assembly are arranged along the circumferential direction of the central shaft. The steel bar bending device has the advantages that the bending movable assembly and the bending fixed assembly in the initial state are arranged on the same side of the bending core, a steel bar to be bent is placed on the rotary disc between the bending core and the bending movable assembly, and after the top plate of the bending movable assembly and the top plate of the bending fixed assembly abut against the steel bar through cooperation of the bolt and the locking nut, the steel bar is bent. The driving handle drives the U-shaped outer frame of the bending movable assembly to rotate along the bending core along with the turntable, and meanwhile, the bending operation of the reinforcing steel bar around the bending core is realized; the whole operation process is simple and fast, and the bending efficiency of the thin steel bars can be improved.

Description

Technical field:

[0001] The utility model relates to the technical field of building steel bar bending test equipment, in particular to a steel bar bending test device. Background technology:

[0002] Steel bar bending tests in construction site laboratories are usually performed using a steel bar bending tester or a universal testing machine. However, for thinner steel bars with a diameter of less than 12 mm, the bending core diameter of the steel bar bending tester does not meet the specification requirements, and can only be bent using a universal testing machine with a corresponding punch. However, the entire process of punch installation, specimen positioning, and universal testing machine jacking and oil return is slow, and the test efficiency is low. Utility model content:

[0003] The purpose of the utility model is to provide a steel bar bending test device which has a simple structure, is easy to operate and is conducive to improving the test efficiency.

[0004] The utility model is implemented by the following technical scheme: a steel bar bending test device, which includes a test platform, a base plate, a turntable, and a bending fixed component and a bending movable component with the same structure; the bending fixed component includes a U-shaped outer frame, a U-shaped inner frame, and a top plate; a supporting bottom plate is fixed between the bottom edges of both sides of the U-shaped outer frame, and a limiting screw is vertically fixed on the supporting bottom plate; the U-shaped inner frame is sleeved on the limiting screw and slidably placed in the U-shaped outer frame, the opening of the U-shaped inner frame faces outward and is fixed with the top plate; the top end of the limiting screw is sleeved with a screw thread that is aligned with the U-shaped inner frame The U-shaped frame is fixed to the test platform by screws, and the base is fixed with a central axis vertically connected to the base, and the turntable and bending core are sequentially mounted and rotated on the central axis; the U-shaped outer frame of the bending fixed assembly is fixed to the base plate by a pad, and the U-shaped outer frame of the bending movable assembly is fixed to the edge of the turntable, and the bending fixed assembly and the bending movable assembly are arranged along the circumference of the central axis.

[0005] Furthermore, it also includes an inverted T-shaped copper sleeve, which is coaxially sleeved on the central axis, the bottom surface of the copper sleeve is in contact with the substrate, the turntable is slidably sleeved on the copper sleeve, and the turntable is connected to the copper sleeve through a key.

[0006] Furthermore, a baffle is fitted on the top end of the central shaft, and the baffle is fixed to the central shaft by passing screws.

[0007] Furthermore, a steel bar receiving groove is provided on the test platform.

[0008] Furthermore, a handle is fixed on the outer wall of the U-shaped outer frame of the bending movable component.

[0009] The advantages of the present invention are as follows: in the initial state, the bending movable assembly and the bending fixed assembly are placed on the same side of the bending core, the steel bar to be bent is placed on the turntable between the bending core and the bending movable assembly, and after the top plate of the bending movable assembly and the top plate of the bending fixed assembly are tightened against the steel bar by utilizing the cooperation of bolts and locking nuts, the driving handle drives the U-shaped outer frame of the bending movable assembly to rotate along the bending core with the turntable, and at the same time, the bending operation of the steel bar around the bending core is realized; the entire operation process is simple and fast, which is conducive to improving the bending efficiency of thinner steel bars. Description of the drawings:

[0010] Figure 1 It is a structural diagram of the present utility model.

[0011] Figure 2 for Figure 1 AA cross-sectional view.

[0012] Figure 3 This is a schematic diagram of the utility model in use after the steel bar is bent.

[0013] The components in the accompanying drawings are marked as follows: test platform 1, base plate 2, turntable 3, bending fixing assembly 4, U-shaped outer frame 4.1, supporting base plate 4.2, limit screw 4.3, U-shaped inner frame 4.4, top plate 4.5, gasket 4.6, locking nut 4.7, bolt 4.8, bending movable assembly 5, center shaft 6, bending core 7, pad 8, copper sleeve 9, key 10, baffle 11, steel bar 12, handle 13, steel bar receiving groove 14. Specific implementation method:

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] like Figures 1 to 3 As shown, this embodiment provides a steel bar bending test device, which includes a test platform 1, a base plate 2, a turntable 3, and a bending fixed component 4 and a bending movable component 5 with the same structure; the base plate 2 is fixed to the test platform 1 by screws, and a central axis 6 is vertically connected to the base plate 2; it also includes an inverted T-shaped copper sleeve 9, which is coaxially sleeved on the central axis 6, and the bottom surface of the copper sleeve 9 is in contact with the base plate 2. A turntable 3 is slidably sleeved on the copper sleeve 9, and the turntable 3 is connected to the copper sleeve 9 through a key 10. When the turntable 3 rotates, it drives the copper sleeve 9 to rotate synchronously around the central axis 6. The copper sleeve 9 is wear-resistant, and the copper sleeve 9 can effectively avoid damage caused by direct contact and friction between the turntable 3 and the base plate 2; a bending core 7 is sleeved on the central axis 6 above the copper sleeve 9, and a bending core 7 with a corresponding radius is selected according to the bending radius of the steel bar 12 and sleeved on the central axis 6.

[0017] A baffle 11 is fitted on the top of the central shaft 6 and is fixed to the central shaft 6 by screws. The baffle 11 effectively limits the bending core 7, reduces the axial movement of the bending core 7 along the central shaft 6, and ensures high efficiency of the operation.

[0018] The bending and fixing assembly 4 includes a U-shaped outer frame 4.1, a U-shaped inner frame 4.4, and a top plate 4.5; a supporting base plate 4.2 is fixed between the bottom edges of the two sides of the U-shaped outer frame 4.1, and a limiting screw 4.3 is vertically fixed on the supporting base plate 4.2; the U-shaped inner frame 4.4 is sleeved on the limiting screw 4.3 and slidably placed inside the U-shaped outer frame 4.1, and the outer walls of the two sides of the U-shaped inner frame 4.4 are in sliding contact with the inner walls of the two sides of the U-shaped outer frame 4.1; the opening of the U-shaped inner frame 4.4 faces outward and is fixed with a top plate 4.5; the top of the limiting screw 4.3 A gasket 4.6 is sleeved and abuts against the U-shaped inner frame 4.4, a locking nut 4.7 is sleeved on the limiting screw 4.3 above the gasket 4.6, and a bolt 4.8 is threaded and abuts against the U-shaped inner frame 4.4 is passed through the end side of the U-shaped outer frame 4.1; loosen the locking nut 4.7, and push the U-shaped inner frame 4.4 to move outward along the U-shaped outer frame 4.1 by screwing the bolt 4.8, so that the top plate 4.5 can be connected to the steel bar 12 to be bent, and then tighten the locking nut 4.7 to further limit the U-shaped inner frame 4.4.

[0019] The U-shaped outer frame 4.1 of the bending fixed component 4 is fixed to the base plate 2 by a pad 8, and the U-shaped outer frame 4.1 is placed above the turntable 3 to facilitate the rotation of the turntable 3; the U-shaped outer frame 4.1 of the bending movable component 5 is fixed on the edge of the turntable 3, and a handle 13 is fixed on the outer wall of the U-shaped outer frame 4.1 of the bending movable component 5. The bending fixed component 4 and the bending movable component 5 are arranged circumferentially along the central axis 6. When the U-shaped outer frame 4.1 of the bending movable component 5 is driven to rotate along the central axis 6 by the handle 13, the turntable 3 is driven to rotate synchronously; a steel bar accommodating groove 14 is provided on the test platform 1 for placing the steel bars 12 to be bent.

[0020] Initial state, such as Figure 1 As shown, the bending movable assembly 5 and the bending fixed assembly 4 are placed on the same side of the bending core 7, and the steel bar 12 to be bent is placed on the turntable 3 between the bending core 7 and the bending movable assembly 5 / bending fixed assembly 4. By using the cooperation of the bolt 4.8 and the locking nut 4.7, the top plate 4.5 of the bending movable assembly 5 and the top plate 4.5 of the bending fixed assembly 4 are tightened against the steel bar 12. Then, the driving handle drives the U-shaped outer frame 4.1 of the bending movable assembly 5 to rotate along the bending core 7 with the turntable 3, and at the same time, the bending operation of the steel bar 12 around the bending core 7 is realized. The state after bending is as shown in FIG. Figure 3 The entire operation process is simple and quick, which is conducive to improving the bending efficiency of the thinner steel bars 12.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel bar bending test device, characterized in that: It includes a test platform, a base plate, a turntable, and a bending fixed component and a bending movable component with the same structure; The bent fixing assembly includes a U-shaped outer frame, a U-shaped inner frame, and a top plate; a supporting base plate is fixed between the bottom edges of both sides of the U-shaped outer frame, and a limiting screw is vertically fixed on the supporting base plate; the U-shaped inner frame is sleeved on the limiting screw and slidably placed in the U-shaped outer frame, and the opening of the U-shaped inner frame faces outward and is fixed to the top plate; the top end of the limiting screw is sleeved with a gasket that abuts the U-shaped inner frame, and a locking nut is threaded on the limiting screw above the gasket; the end side of the U-shaped outer frame is penetrated by a bolt that abuts the U-shaped inner frame; The base plate is fixed to the test platform by screws, and a central axis is vertically connected to the base plate, on which the turntable and the bending core are sequentially mounted and rotated; the U-shaped outer frame of the bending fixed assembly is fixed to the base plate by a pad, and the U-shaped outer frame of the bending movable assembly is fixed to the edge of the turntable, and the bending fixed assembly and the bending movable assembly are arranged along the circumference of the central axis.

2. A steel bar bending test device according to claim 1, characterized in that: It also includes an inverted T-shaped copper sleeve, which is coaxially sleeved on the central axis. The bottom surface of the copper sleeve contacts the base plate. The turntable is slidably sleeved on the copper sleeve, and the turntable is connected to the copper sleeve through a key.

3. A steel bar bending test device according to claim 1 or 2, characterized in that: A baffle is fitted on the top end of the central shaft, and the baffle is fixed to the central shaft by passing screws.

4. A steel bar bending test device according to claim 3, characterized in that: A steel bar receiving groove is provided on the test platform.

5. A steel bar bending test device according to claim 3, characterized in that: A handle is fixed on the outer wall of the U-shaped outer frame of the bending movable component.

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