Mechanical property testing device for construction steel bars

Abstract

The utility model discloses a construction steel bar mechanical property testing device which comprises a rack, two supporting tables, a hydraulic oil cylinder, a pressure head structure and a lifting structure, the two supporting tables are respectively arranged on the rack in a sliding mode, and a notch is formed in the rear end of the rack; the two ends of the steel bar are placed on the two supporting tables correspondingly. The hydraulic oil cylinder is arranged above the rack through the supporting frame and located between the two supporting tables. The pressure head structure is arranged on the hydraulic oil cylinder; the lifting structure comprises a connecting plate, a rotating arm and a damping knob, and the connecting plate is fixedly arranged at the telescopic end of the hydraulic oil cylinder; the rotating arm is of a folding rod structure, and the rotating arm is rotatably arranged on the connecting plate and locked through a damping rotary knob. When the rotating arm rotates downwards, the rotating arm rotates to the position below the reinforcing steel bar from the notch. According to the utility model, after the test is finished, the reinforcing steel bar is lifted through the lifting structure, so that the reinforcing steel bar is prevented from being clamped on the support table.

Description

Technical Field

[0001] This utility model relates to the field of steel bar testing technology, and in particular to a device for testing the mechanical properties of building steel bars. Background Technology

[0002] In the field of construction engineering, steel reinforcement, as one of the main building materials, directly affects the structural safety and quality of buildings due to its mechanical properties. Therefore, accurate testing of the mechanical properties of steel reinforcement is crucial. With the continuous development of the construction industry, the requirements for steel reinforcement performance are becoming increasingly stringent.

[0003] In related technologies, when conducting bending tests on reinforcing bars, the two ends of the reinforcing bars are usually placed on a rotatable support structure so that the support structure can rotate and fit with the degree of bending when the reinforcing bars are bent. A hydraulic cylinder set above the center of the reinforcing bar drives the bending die to press down on the reinforcing bar, causing it to deform.

[0004] However, during the bending test, if the bending angle of the steel bar is too large or the material of the steel bar itself is uneven, resulting in irregular bending deformation, the steel bar is very likely to get stuck on the supporting structure. Operators need to spend a lot of time and effort, and even need to use additional tools to remove the steel bar. This not only reduces the testing efficiency, but may also cause secondary damage to the steel bar and testing equipment, affecting the accuracy of the test results. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0006] To achieve the above objectives, the first aspect of this utility model provides a testing device for the mechanical properties of reinforcing steel bars, comprising: a frame, a support platform, a hydraulic cylinder, a pressure head structure, and a lifting structure. Two support platforms are slidably mounted on the frame and limited by positioning pins. A notch is provided at the rear end of the frame. Both ends of the reinforcing steel bar are placed on the rotating ends of the two support platforms. The hydraulic cylinder is mounted above the frame via a support frame and located between the two support platforms. The pressure head structure is detachably mounted on the telescopic end of the hydraulic cylinder. The lifting structure includes a connecting plate, a rotating arm, and a damping knob. The connecting plate is fixedly mounted on the telescopic end of the hydraulic cylinder. A vertically upward support rod is provided at the notch, and the connecting plate is slidably connected to the support rod. The rotating arm is a folding rod structure and is rotatably mounted on the connecting plate and locked by the damping knob. When the rotating arm rotates downward, it rotates from the notch to below the reinforcing steel bar.

[0007] In addition, the building steel reinforcement mechanical performance testing device proposed above according to this utility model may also have the following additional technical features:

[0008] As a further description of the above technical solution: the platform is a rectangular frame structure, and the platform has a sliding groove along its length, and a plurality of positioning holes are equally spaced on the sliding groove. The two support platforms are respectively slidably disposed in the sliding groove and fixed to the corresponding positioning holes by the positioning pins.

[0009] As a further description of the above technical solution: the support platform includes a frame, a sliding block, and a rotating platform, wherein the sliding block is disposed on the frame and slidably disposed in the sliding groove; the rotating platform is damped and rotatably disposed on the frame; and a placement groove for placing the reinforcing bar is formed on the surface of the rotating platform.

[0010] As a further description of the above technical solution: the pointer is coaxially arranged with the rotation axis of the rotating platform, and the frame is provided with scale markings.

[0011] As a further description of the above technical solution: the pressure head structure includes a connecting column, a connecting rod, a connecting head, and an elbow mold, wherein the connecting column is disposed at one end of the connecting rod and is detachably connected to the telescopic end of the hydraulic cylinder; the connecting head is disposed at the other end of the connecting rod; and the elbow mold is detachably disposed on the connecting head.

[0012] As a further description of the above technical solution: the elbow mold has a fan-shaped structure and a slot is provided on the outer ring, and the reinforcing bar is embedded in the slot.

[0013] According to the mechanical performance testing device for building steel bars of this utility model, after the hydraulic cylinder drives the pressure head structure to press down the steel bar to complete the test, the unique lifting structure rotates the rotating arm to the bottom of the steel bar and locks the damping knob, and then the hydraulic cylinder is reset. The rotating arm is used to lift the steel bar, which effectively solves the problem of the steel bar being stuck on the two support platforms and unable to be removed due to bending.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a structural schematic diagram of a building steel reinforcement mechanical performance testing device according to an embodiment of the present invention;

[0017] Figure 2 This is a structural schematic diagram of a building steel reinforcement mechanical performance testing device according to another embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the support platform according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of a pressure head structure according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of a lifting structure according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the usage state of a building steel reinforcement mechanical performance testing device according to an embodiment of the present utility model;

[0022] As shown in the figure:

[0023] 100. Stand; 101. Positioning pin; 102. Notch; 103. Positioning hole; 200. Support platform; 210. Frame; 211. Scale marking; 220. Sliding block; 230. Rotating platform; 231. Placement slot; 232. Pointer; 300. Hydraulic cylinder; 301. Support frame; 400. Press head structure; 410. Connecting column; 420. Connecting rod; 430. Connector; 440. Elbow mold; 500. Lifting structure; 501. Support rod; 510. Connecting plate; 520. Rotating arm; 530. Damping knob; 600. Reinforcing bar. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] The mechanical performance testing device for building steel reinforcement according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the mechanical performance testing device for building steel bars in this embodiment of the present invention may include a frame 100, a support platform 200, a hydraulic cylinder 300, a pressure head structure 400, and a lifting structure 500.

[0027] Two support platforms 200 are slidably mounted on the frame 100 and are limited by positioning pins 101. A notch 102 is provided at the rear end of the frame 100, and the two ends of the reinforcing bar 600 are placed on the rotating ends of the two support platforms 200 respectively.

[0028] The hydraulic cylinder 300 is mounted above the platform 100 via the support frame 301 and is located between the two support platforms 200. The pressure head structure 400 is detachably mounted on the telescopic end of the hydraulic cylinder 300.

[0029] like Figure 5 As shown, the lifting structure 500 includes a connecting plate 510, a rotating arm 520, and a damping knob 530.

[0030] The connecting plate 510 is fixedly installed at the telescopic end of the hydraulic cylinder 300. A vertically upward support rod 501 is provided at the notch 102, and the connecting plate 510 and the support rod 501 are slidably connected. The rotating arm 520 is a folding rod structure and is rotatably mounted on the connecting plate 510 and locked by the damping knob 530. When the rotating arm 520 rotates downward, it rotates from the notch 102 to below the reinforcing bar 600.

[0031] Specifically, such as Figure 1 , Figure 2 Figure 5 and Figure 6 As shown, when relevant personnel conduct a bending test on the steel bar 600, they first slide the two support platforms 200 onto the frame 100 respectively, and use the positioning pins 101 to limit and lock their positions so that the support platforms 200 are stably positioned. Then, the two ends of the steel bar 600 are placed stably on the rotating ends of the two support platforms 200.

[0032] Then, the pressure head structure 400 is installed on the telescopic end of the hydraulic cylinder 300, and the rotating arm 520 is rotated backward and locked by the damping knob 530 to prevent the rotating arm 520 from causing interference when the hydraulic cylinder 300 descends.

[0033] Next, the relevant staff started the hydraulic cylinder 300, which caused its telescopic end to slowly press down the steel bar 600 with the pressure head structure 400. The steel bar 600 began to bend and deform with the cooperation of the two support platforms 200, thus completing the predetermined mechanical performance test.

[0034] After the test, the relevant staff loosened the damping knob 530 and rotated the rotating arm 520 downwards from the notch 102 until it reached below the rebar 600. Then, they tightened the damping knob 530 and operated the hydraulic cylinder 300 to return to its original position and rise. The hydraulic cylinder 300 moved the connecting plate 510 upwards. Since the rotating arm 520 had already caught the rebar 600, the rebar 600 was lifted up by the return action of the hydraulic cylinder 300 and disengaged from the two support platforms 200, thus solving the problem of the rebar 600 being stuck on the support platform 200 and unable to be removed.

[0035] In one embodiment of the present invention, the platform 100 is a rectangular frame structure, and the platform 100 has a sliding groove along its length, and a plurality of positioning holes 103 are equally spaced on the sliding groove. Two support platforms 200 are respectively slidably disposed in the sliding groove and fixed at the corresponding positioning holes 103 by positioning pins 101.

[0036] To clearly illustrate the previous embodiment, in one embodiment of this utility model, as follows: Figure 3 As shown, the support platform 200 includes a frame 210, a sliding block 220, and a rotating platform 230.

[0037] The sliding block 220 is mounted on the frame 210 and slidably mounted in the slide groove. The rotating table 230 is mounted on the frame 210 with damping rotation. The table surface of the rotating table 230 is provided with a placement groove 231 for placing the reinforcing bar 600.

[0038] It should be noted that before the relevant personnel conduct the bending test on the steel bar 600, they can adjust the position of the two support platforms 200 according to the length of the steel bar 600. That is, by pulling out the positioning pin 101, moving the support platform 200 to the required position, and then inserting the positioning pin 101 into the corresponding positioning hole 103, the position of the support platform 200 can be adjusted.

[0039] Then, the relevant staff placed the steel bar 600 in the placement groove 231. When the hydraulic cylinder 300 pushed the pressure head structure 400 to press down the steel bar 600, the rotating table 230 could rotate to follow the bending deformation of the steel bar 600.

[0040] In addition, the pointer 232 is coaxially set with the rotation axis of the rotating table 230, and the frame 210 is equipped with a scale mark 211. Relevant personnel can read the corresponding scale mark 211 by rotating the pointer 232 to determine the bending angle of the steel bar 600.

[0041] In one embodiment of this utility model, such as Figure 4 As shown, the pressure head structure 400 includes a connecting column 410, a connecting rod 420, a connecting head 430, and an elbow mold 440.

[0042] The connecting column 410 is located at one end of the connecting rod 420 and is detachably connected to the telescopic end of the hydraulic cylinder 300. The connecting head 430 is located at the other end of the connecting rod 420, and the elbow mold 440 is detachably located on the connecting head 430.

[0043] As one possible scenario, the telescopic end of the hydraulic cylinder 300 has an inwardly opening connection hole, the connecting column 410 is embedded in the connection hole and locked by bolts; the inner ring of the elbow mold 440 has an embedding groove that matches the connector 430, the elbow mold 440 is embedded on the connector 430 and locked by bolts.

[0044] It should be noted that by detachably mounting the elbow mold 440 on the connector 430, it can accommodate steel bars 600 of different specifications and bending requirements. Relevant personnel only need to adjust the corresponding mold without replacing the entire pressure head structure 400, which reduces costs and improves the versatility of the device.

[0045] In addition, the elbow mold 440 has a fan-shaped structure and a slot on the outer ring. The reinforcing bar 600 is embedded in the slot so that the reinforcing bar 600 has a more stable stress environment during bending and reduces test errors caused by position deviation and uneven stress.

[0046] In summary, according to the mechanical performance testing device for reinforcing steel bars 600 of this utility model embodiment, after the hydraulic cylinder 300 drives the pressure head structure 400 to press down the reinforcing steel bar 600 to complete the test, the unique lifting structure 500 rotates the rotating arm 520 to below the reinforcing steel bar 600 and locks the damping knob 530. Then, the hydraulic cylinder 300 is reset, and the rotating arm 520 is used to lift the reinforcing steel bar 600, which effectively solves the problem that the reinforcing steel bar 600 is stuck on the two support platforms 200 due to bending and cannot be removed.

[0047] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A device for testing the mechanical properties of construction reinforcement, characterized in that it comprises: The utility model relates to a steel bar bending device, including: Rack (100), support platform (200), hydraulic oil cylinder (300), pressure head structure (400) and pull structure (500), wherein, Two support platforms (200) are respectively arranged on the rack (100) and are limited by positioning pins (101), and the rear end of the rack (100) is provided with a notch (102); Two ends of the steel bar (600) are respectively placed on the rotating end of the two support platforms (200); The hydraulic oil cylinder (300) is arranged above the rack (100) through a support frame (301) and is located between the two support platforms (200); The pressure head structure (400) is detachably arranged on the telescopic end of the hydraulic oil cylinder (300); The pull structure (500) comprises a connecting plate (510), a rotating arm (520) and a damping knob (530), wherein, The connecting plate (510) is fixedly arranged on the telescopic end of the hydraulic oil cylinder (300); A vertically upward supporting rod (501) is arranged at the notch (102), and the connecting plate (510) is slidably connected with the supporting rod (501); The rotating arm (520) is a folding rod structure, and the rotating arm (520) is rotatably arranged on the connecting plate (510) and is locked by the damping knob (530); When the rotating arm (520) rotates downward, it rotates from the notch (102) to below the steel bar (600).

2. The device for testing the mechanical properties of construction reinforcement according to claim 1, characterized in that, The rack (100) is a rectangular frame structure, and a sliding groove is formed in the rack (100) along the length direction, a plurality of positioning holes (103) are equidistantly formed in the sliding groove, and the two support platforms (200) are respectively slidably arranged in the sliding groove and fixed in the corresponding positioning holes (103) by the positioning pins (101).

3. The device for testing the mechanical properties of construction reinforcement according to claim 2, characterized in that, The support platform (200) comprises a frame body (210), a sliding block (220) and a rotating table (230), wherein, The sliding block (220) is arranged on the frame body (210) and slidably arranged in the sliding groove; The rotating table (230) is dampingly rotatably arranged on the frame body (210); A placing groove (231) for placing the steel bar (600) is formed in the table top of the rotating table (230).

4. The device for testing the mechanical properties of construction reinforcement according to claim 3, characterized in that, A pointer (232) is coaxially arranged with the rotating shaft of the rotating table (230), and a scale mark (211) is arranged on the frame body (210).

5. The device for testing the mechanical properties of construction reinforcement according to claim 1, characterized in that, The pressure head structure (400) comprises a connecting column (410), a connecting rod (420), a connecting head (430) and an elbow die (440), wherein, The connecting column (410) is arranged at one end of the connecting rod (420) and detachably connected with the telescopic end of the hydraulic oil cylinder (300); The connecting head (430) is arranged at the other end of the connecting rod (420); The elbow die (440) is detachably arranged on the connecting head (430).

6. The device for testing the mechanical properties of construction reinforcement according to claim 5, characterized in that, The elbow die (440) is a fan-shaped structure, and a clamping groove is formed in the outer ring, and the steel bar (600) is embedded in the clamping groove.

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