A reinforcing bar bending resistance testing apparatus

Abstract

The utility model relates to engineering detection technical field, concretely is a kind of reinforcing bar bending test equipment, including stand, roof and base, stand, roof and base fixed connection, the below of roof is equipped with hydraulic rod, the lower end of hydraulic rod is connected with pressure head, and two support seats are equipped on base, and rotating piece is connected on support seat, and rotating piece is equipped with slot, and slot swing joint has insert, and insert is equipped with jack, and the jack of two inserts is connected with test reinforcing bar, and test reinforcing bar is below pressure head. When the bending resistance of reinforcing bar needs to be tested by staff, the reinforcing bar is fixed by being inserted through the jack on two rotating pieces, the reinforcing bar is extruded downward by pressure head, and the both ends of reinforcing bar are fixed by jack, so that the safety of reinforcing bar bending test is ensured.

Description

Technical Field

[0001] This utility model relates to the field of engineering testing technology, and in particular to a steel bar bending resistance testing device. Background Technology

[0002] In modern construction engineering, structures such as highways and bridges are all reinforced concrete structures. Before pouring concrete, a large amount of steel reinforcement erection and binding work must be completed. To ensure the construction quality, the bending performance of the steel reinforcement is usually tested. However, during testing, improper fixing or sudden breakage of the steel reinforcement can cause injury to people nearby. Existing testing equipment simply designs the support parts of the steel reinforcement as grooves, resulting in poor fixing. Therefore, designing the fixing device as a cylinder can effectively solve this problem.

[0003] Chinese utility model patent CN218674568U discloses a safe and reliable steel bar bending resistance testing device for civil engineering. The device includes a base, support columns fixedly installed on the top of the base and near its two sides, a top plate fixedly installed on the top of the support columns, a protective cover located below the top plate and inside the support columns, sliders fixedly installed on both sides of the protective cover and near its upper and lower sides, a slide rail fixedly installed inside the support columns, the sliders slidingly connected to and adapted to the slide rail, and a hydraulic cylinder fixedly installed in the middle of the top of the top plate, with a hydraulic cylinder fixedly installed at its bottom. The hydraulic rod has its bottom end penetrating the top plate and extending into the interior of the protective cover. Sliding rods are fixedly installed on both sides of the hydraulic rod near its bottom end. A motor is fixedly installed on the right side of the base, and a threaded rod is fixedly installed at the motor's output end. The left end of the threaded rod passes through the interior of the base and is rotatably connected to a bearing. The left side of the bearing is fixedly connected to the inner wall of the base. Movable blocks are movably connected to the outside of the threaded rod near its left and right ends. A support rod is fixedly installed on the top of the movable block, and a fixed cylinder is fixedly installed on the top of the support rod, extending out of the base. A spring and a fixed block are installed inside the fixed cylinder to secure the reinforcing bars. Because the spring is inside the fixed cylinder, larger diameter reinforcing bars cannot be inserted, while smaller diameter reinforcing bars can easily wobble inside the fixed cylinder, resulting in poor fixing. Furthermore, due to the elasticity of the spring, the reinforcing bars cannot be properly secured. When the pressure head compresses the reinforcing bars, they are often subjected to high pressure, making them prone to damage. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a steel bar bending resistance testing device that improves the safety of steel bar testing, can adapt to steel bars of different diameters, and is not easily damaged.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0006] A rebar bending resistance testing device includes a column, a top plate, and a base. The column, top plate, and base are fixedly connected. A hydraulic rod is provided below the top plate, and a pressure head is connected to the lower end of the hydraulic rod. Two support seats are provided on the base, and rotating parts are connected to the support seats. The rotating parts are provided with slots. The device is characterized in that: inserts are movably connected to the slots, and inserts are provided with holes. Test rebars are connected to the holes on the two inserts, and the test rebars are located below the pressure head.

[0007] Furthermore, there are multiple plug-ins, each with a different socket diameter, and the plug-in size matches the slot size.

[0008] Furthermore, a blocking plate is fixedly connected to one end of the plug, and the socket passes through the blocking plate.

[0009] Furthermore, the support includes a rotating shaft perpendicular to the test steel bar, and a rotating component is slidably connected to the rotating shaft, rotating about the axis of the rotating shaft.

[0010] Furthermore, the support base is movably connected to the base, and a movable block is fixedly connected to the bottom of the support base. A motor is installed on one side edge of the base, and the motor is connected to a positive and negative threaded rod. The two movable blocks are respectively connected to the positive and negative threaded rods. The motor controls the rotation of the positive and negative threaded rods, and the two movable blocks move in opposite directions.

[0011] Furthermore, the pressure head is movably connected to the hydraulic rod.

[0012] Furthermore, the rotating component is equipped with an angle scale, and the support base is equipped with a first pointer. The rotation of the rotating component drives the angle scale to rotate, and the first pointer points to different angles on the angle scale.

[0013] Furthermore, the base is equipped with a scale that marks the movement trajectory of the support. The support is also equipped with a second pointer that is horizontally positioned and points to different scales as the support moves.

[0014] The beneficial effects of this utility model are as follows: 1. Different inserts are selected according to the diameter of the test steel bars. The diameter of the insertion hole on the insert matches the diameter of the test steel bar, which can effectively fix the steel bar. Even if the steel bar breaks unexpectedly, the insertion holes at both ends of the steel bar can ensure that the steel bar is fixed and prevent it from flying away. At the same time, the connection method does not require spring fixation, reducing damage to the fixing equipment. 2. During the bending process of the test steel bar, the rotating part rotates with it, and the angle gauge rotates with it. The first pointer on the support indicates the bending angle, which can easily show the bending angle of different steel bars under the same pressure. The scale between the support seats can also easily record the bending resistance of steel bars of different lengths. Attached Figure Description

[0015] Figure 1This is a schematic diagram of a steel bar bending resistance testing device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the rotating component and insert of a steel bar bending resistance testing device according to the present invention;

[0017] Figure 3 This is a schematic diagram of a support base for a steel bar bending resistance testing device according to the present invention;

[0018] Figure 4 This is a schematic diagram of Embodiment 2 of the steel bar bending resistance testing equipment of this utility model.

[0019] Explanation of the reference numerals: 1. Column; 2. Base; 3. Top plate; 4. Pressure head; 5. Hydraulic rod; 6. Support base; 7. Test steel bar; 8. Threaded rod (positive and negative); 9. Rotating component; 10. Motor; 11. Slot; 12. Insert; 13. Socket; 14. Blocking plate; 15. Moving block; 16. Rotating shaft; 17. First pointer; 18. Angle ruler; 19. Scale ruler; 20. Second pointer. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0021] Example 1

[0022] Combined with reference to the appendix Figures 1 to 3This utility model provides a rebar bending resistance testing device, including a column 1, a top plate 3, and a base 2. The column 1, top plate 3, and base 2 are fixedly connected. A hydraulic rod 5 is provided below the top plate 3, and a pressure head 4 is connected to the lower end of the hydraulic rod 5. Two support seats 6 are provided on the base 2, and a rotating component 9 is connected to the support seat 6. The rotating component 9 has a slot 11, and a plug 12 is movably connected to the slot 11. The plug 12 has a insertion hole 13, and the insertion holes 13 on the two plugs 12 are connected to test rebars 7, which are located below the pressure head 4. In use, the test rebar 7 passes through the insertion holes 13 on the two plugs 12 and is fixed. Under the action of the hydraulic rod 5, the pressure head 4 compresses the test rebar 7 to obtain the bending resistance of the test rebar 7. During the entire compression process, both ends of the test rebar 7 are always fixed by the plugs 12. Even if the test rebar 7 breaks, it will not fly away, ensuring the safety of the personnel.

[0023] Preferably, there are multiple plug-ins 12, and the diameter of the socket 13 inside each plug-in 12 is different. The size of the plug-in 12 is the same as the size of the slot 11. Since there are multiple plug-ins 12, the socket 13 inside each plug-in 12 can fix test steel bars 7 of different sizes. At the same time, the size of the plug-in 12 is the same as the size of the slot 11, which can fix it well and prevent it from shaking. When testing test steel bars 7 of different sizes, only the plug-in 12 needs to be replaced.

[0024] Preferably, a blocking plate 14 is fixedly connected to one end of the plug-in 12, and the plug hole 13 passes through the blocking plate 14. When the test rebar 7 bends downward, the left and right rebars will move towards the middle, which will also move the plug-in 12 towards the middle. The blocking plate 14 is connected to one end of the plug-in 12. The blocking plate 14 of the left plug-in 12 is on the left side of the slot 11, and the blocking plate 14 of the right plug-in 12 is on the right side of the slot 11, to prevent the plug-in 12 from moving with the test rebar and to ensure the safety and stability of the entire device.

[0025] Preferably, the support base 6 includes a rotating shaft 16, which is perpendicular to the test rebar 7. A rotating component 9 is slidably connected to the rotating shaft 16 and rotates about the axis of the rotating shaft 16. When the test rebar 7 is pressed downward, the test rebar 7 will deform, and the rotating component 9 will rotate accordingly as the test rebar 7 bends, reducing damage to the rebar fixing device.

[0026] Preferably, the support base 6 is movably connected to the base 2. A movable block 15 is fixedly connected to the lower part of the support base 6. A motor 10 is installed on one side edge of the base 2. The motor 10 is connected to a positive and negative threaded rod 8. The two movable blocks 15 are respectively connected to the positive and negative threaded rods 8. The motor 10 controls the rotation of the positive and negative threaded rods 8, causing the two movable blocks 15 to move in opposite directions. By controlling the rotation of the positive and negative threaded rods 8 by the motor 10, the two movable blocks 15 move in opposite directions, thereby controlling the distance between the two support bases 6, enabling the equipment to perform bending tests on test steel bars 7 of different lengths.

[0027] Preferably, the pressure head 4 is movably connected to the hydraulic rod 5. This movable connection allows for the replacement of pressure heads 4 with different diameters to accommodate different diameter test steel bars 7, ensuring the accuracy of the test.

[0028] Example 2

[0029] Combined with appendix Figure 4 The difference between this embodiment and Embodiment 1 is that an angle ruler 18 is provided on the rotating component 9, and a first pointer 17 is provided on the support base 6. The rotation of the rotating component 9 drives the angle ruler 18 to rotate, and the first pointer 17 points to different angles on the angle ruler 18. When the test steel bar 7 is not compressed, both rotating components are placed horizontally. When the test steel bar 7 is compressed, the two rotating components 9 rotate clockwise or counterclockwise at a certain angle. At this time, the two pointers show the bending angles at both ends of the test steel bar 7, thereby determining the bending angle of the entire test steel bar 7. When testing different test steel bars 7, the bending angle of each type of steel bar can be compared and analyzed without removing the test steel bar 7 from the testing equipment and measuring its bending angle separately.

[0030] Preferably, the base 2 is equipped with a scale 19, which marks along the movement trajectory of the support 6. The support 6 is equipped with a second pointer 20, which is horizontally positioned and points to different scales as the support 6 moves. This allows for convenient observation, recording, and testing of the bending resistance of the reinforcing bar 7 at different lengths.

[0031] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A steel bar bending resistance testing device, comprising a column (1), a top plate (3), and a base (2), wherein the column (1), the top plate (3), and the base (2) are fixedly connected, a hydraulic rod (5) is provided below the top plate (3), a pressure head (4) is connected to the lower end of the hydraulic rod (5), two support seats (6) are provided on the base (2), a rotating component (9) is connected to the support seat (6), and a slot (11) is provided on the rotating component (9), characterized in that: The slot (11) is movably connected to a plug (12), and the plug (12) has a socket (13). The two sockets (13) on the plug (12) are connected to test steel bars (7), which are located below the pressure head (4).

2. The steel bar bending resistance testing device according to claim 1, characterized in that: There are multiple plugs (12), and the diameter of the sockets (13) in different plugs (12) is different. The size of the plug (12) is the same as the size of the slot (11).

3. The steel bar bending resistance testing device according to claim 2, characterized in that: One end of the plug (12) is fixedly connected to a blocking plate (14), and the socket (13) passes through the blocking plate (14).

4. The steel bar bending resistance testing device according to claim 1, characterized in that: The support base (6) includes a rotating shaft (16) perpendicular to the test steel bar (7). The rotating component (9) is slidably connected to the rotating shaft (16) and rotates around the axis of the rotating shaft (16).

5. The steel bar bending resistance testing device according to claim 1, characterized in that: The support base (6) is movably connected to the base (2). A movable block (15) is fixedly connected below the support base (6). A motor (10) is installed on one side edge of the base (2). The motor (10) is connected to a positive and negative threaded rod (8). The two movable blocks (15) are respectively connected to the positive and negative threaded rods (8). The motor (10) controls the positive and negative threaded rods (8) to rotate. The two movable blocks (15) move in opposite directions.

6. The steel bar bending resistance testing device according to claim 1, characterized in that: The pressure head (4) is movably connected to the hydraulic rod (5).

7. The steel bar bending resistance testing device according to claim 3, characterized in that: The rotating part (9) is provided with an angle ruler (18), and the support base (6) is provided with a first pointer (17). The rotating part (9) rotates and drives the angle ruler (18) to rotate. The first pointer (17) points to different angles of the angle ruler (18).

8. The steel bar bending resistance testing device according to claim 7, characterized in that: The base (2) is provided with a scale (19), which marks the movement trajectory of the support (6). The support (6) is provided with a second pointer (20), which is set horizontally and points to different scales as the support (6) moves.

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