Minimum reinforcement ratio traction test equipment

Abstract

The utility model provides a minimum reinforcement ratio traction test equipment, including test frame, test platform, protective telescopic cover, upper and lower clamp and traction test cylinder, the inner side of test frame is equipped with the two test platform in the sliding manner, each test platform is fixedly equipped with the upper and lower clamp, the traction test cylinder is equipped with the protective telescopic cover, the upper and lower clamp is equipped with the protective telescopic cover, and the traction test cylinder is equipped with the protective telescopic cover. Wherein one of the test platforms is fixedly provided with the protective telescopic cover, the two test platforms are fixedly connected with the output ends of traction test cylinders, and the traction test cylinders are respectively and fixedly arranged at the top of the outer part of the test rack and in the lower part of the test rack; according to the utility model, the vertical positioning of the reinforcing steel bar is automatically realized through the movable groove, the lead screw and other parts, the test accuracy and reliability are improved, and the working efficiency is improved. In addition, the protective telescopic cover is introduced, flexible folding and extension are achieved through a corrugated structure and a shearing mechanism, the reinforcing steel bars are tightly covered, particles splashed during fracture are effectively blocked, and the risk of injury to the environment and personnel is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar testing, and in particular relates to a minimum reinforcement ratio pulling test device. Background Art

[0002] In construction projects, steel bars are an indispensable tensile material in concrete structures. In order to ensure the stability and safety of building structures, it is necessary to ensure that the steel bars have sufficient tensile strength and elongation. Therefore, during the production and construction process, a series of tests are required on the steel bars to evaluate whether their performance meets the design requirements.

[0003] The minimum reinforcement ratio tensile test is one of the important tests. It simulates the tensile conditions in the actual working environment and pulls the steel bars to measure their tensile strength, elongation and other performance indicators under specific conditions. This test can help engineers and construction workers understand the performance characteristics of steel bars, thereby ensuring the safety and reliability of building structures.

[0004] In the current steel bar tensile test process, both ends of the steel bar are generally firmly clamped by professional upper and lower clamps to ensure the accuracy of the test. However, a common problem is that when the overall state of the steel bar is not vertical but tilted, the accuracy of the test results will be significantly affected. This not only requires the staff to repeatedly adjust the clamping state of the steel bar to ensure that it is in a vertical state, but also greatly increases the time and complexity of the test process. What is more serious is that when the steel bar breaks during the test, flying debris and particles will be generated at the break. These flying particles are not only difficult to collect in a centralized manner, but are also more likely to injure surrounding staff, posing a potential threat to the working environment and personnel safety.

[0005] Therefore, it is very necessary to invent a minimum reinforcement ratio tensile test device. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a minimum reinforcement ratio pulling test device, including a test frame, a test platform, a protective telescopic cover, upper and lower clamps and a pulling test cylinder, two of the test platforms are slidably installed on the inner side of the test frame, and the upper and lower clamps are fixedly installed on each of the test platforms, and the protective telescopic cover is fixedly installed on one of the test platforms. The two test platforms are fixedly connected to the output end of the pulling test cylinder, and the pulling test cylinder is fixedly installed on the outer top of the test frame and the lower inner part of the test frame respectively;

[0007] The protective telescopic cover comprises a support plate, a telescopic cover, a shearing guide mechanism, a clamp and a handle, wherein the support plate is fixedly mounted on the test platform; a plurality of support plates are provided, and each of the support plates is connected through the telescopic cover and the shearing guide mechanism; the clamp and the handle are fixedly mounted on one of the support plates in a mirror-symmetrical manner;

[0008] There are two upper and lower clamps, which are an upper clamp and a lower clamp respectively, and the upper and lower clamps have the same structure. The upper clamp of the two upper and lower clamps is located on the inner side of the protective telescopic cover;

[0009] The upper and lower clamps include a clamp base, a movable groove, a lead screw, a lead screw nut and a straightening plate. The clamp base is fixedly mounted on the test platform. The movable groove is mirror-symmetrically provided on the top of the clamp base. The lead screw is rotatably installed in each of the movable grooves. Either end of the lead screw is fixed to the motor output end built into the clamp base. Two mirror-symmetrical lead screw nuts are installed on each of the lead screws, and the lead screw nuts are fixedly connected to the straightening plate.

[0010] Preferably, the support plate is a rectangular frame structure, and several of the support plates are divided into a top plate, a movable plate and a bottom plate, all of which are connected through the telescopic cover and the shear guide mechanism. The top plate is fixedly mounted on the test platform, the clamp and the handle are fixedly mounted on the bottom plate, and a buckle seat matching the clamp is installed on the test platform below.

[0011] Preferably, the telescopic cover is an elastic corrugated cover whose interface is rectangular. The telescopic cover is located on the inner side of the shearing guide mechanism. The shearing guide mechanism is a shearing mechanism made of a plurality of plates, each of which is rotatably connected to each other and also rotatably connected to the support plate.

[0012] Preferably, a hydraulic rod is fixedly mounted on the clamp base, and the hydraulic rod is used to push two clamping blocks slidably mounted inside the clamp base to move, and the distance between the two movable clamping blocks will gradually decrease or increase under the action of the inclined surface of the clamp base.

[0013] Preferably, the lead screw is a bidirectional lead screw, provided with two sections of threads with different rotation directions, namely one section of left-handed thread and one section of right-handed thread, and a lead screw nut is installed on both sections of threads.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model cleverly adds a straightening mechanism based on the traditional upper and lower clamps. The mechanism consists of key components such as a movable groove, a lead screw, a lead screw nut and a straightening plate. This innovative design enables the steel bar to automatically achieve vertical positioning during the clamping process, effectively avoiding the influence of the steel bar tilt on the test accuracy, thereby significantly improving the reliability and accuracy of the test. What is more worth mentioning is that this straightening mechanism does not require manual adjustment, which greatly improves work efficiency and test convenience.

[0016] In addition, the utility model also introduces the design of a protective telescopic cover. The protective telescopic cover can flexibly realize folding and extension by relying on the elasticity of the corrugated structure and the guiding property of the shear mechanism. During the steel bar testing process, the protective telescopic cover can tightly cover the steel bar to ensure that when the steel bar breaks, the flying particles and debris are effectively blocked, thereby greatly reducing the risk of harm to the surrounding environment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the test platform, protective telescopic cover and upper and lower clamps of the utility model.

[0019] Figure 3 This utility model Figure 1 Schematic diagram of the local enlarged structure at A.

[0020] In the figure:

[0021] Test frame 1, test platform 2, protective telescopic cover 3, support plate 31, telescopic cover 32, shear guide mechanism 33, clamp head 34, handle 35, upper and lower clamps 4, clamp base 41, movable groove 42, lead screw 43, lead screw nut 44, straightening plate 45, pulling test cylinder 5. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model 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 utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0024] As attached Figure 1 To Attachment Figure 3 As shown:

[0025] The utility model provides a minimum reinforcement ratio pulling test equipment, including a test frame 1, a test platform 2, a protective telescopic cover 3, an upper and lower clamps 4 and a pulling test cylinder 5, wherein two of the test platforms 2 are slidably installed on the inner side of the test frame 1, and the upper and lower clamps 4 are fixedly installed on each of the test platforms 2, and the protective telescopic cover 3 is fixedly installed on one of the test platforms 2, and the two test platforms 2 are fixedly connected to the output end of the pulling test cylinder 5, and the pulling test cylinder 5 is respectively fixedly installed on the external top of the test frame 1 and the internal part below the test frame 1.

[0026] The protective telescopic cover 3 includes a support plate 31, a telescopic cover 32, a shearing guide mechanism 33, a clamp 34 and a handle 35. The support plate 31 is fixedly mounted on the test platform 2. There are a plurality of support plates 31, and each of the support plates 31 is connected to each other through the telescopic cover 32 and the shearing guide mechanism 33. The clamp 34 and the handle 35 are fixedly mounted on one of the support plates 31 in a mirror-symmetrical manner. The protective telescopic cover 3 can be flexibly folded and extended by relying on the elasticity of the corrugated structure and the guiding property of the shearing mechanism.

[0027] There are two upper and lower clamps 4 , which are an upper clamp and a lower clamp respectively, and have the same structure. The upper clamp of the two upper and lower clamps 4 is located at the inner side of the protective telescopic cover 3 .

[0028] The upper and lower clamps 4 include a clamp base 41, a movable groove 42, a lead screw 43, a lead screw nut 44 and a straightening plate 45. The clamp base 41 is fixedly mounted on the test platform 2; the movable groove 42 is mirror-symmetrically provided above the clamp base 41, and the lead screw 43 is rotatably installed in each of the movable grooves 42. Either end of the lead screw 43 is fixed to the motor output end built into the clamp base 41, and two mirror-symmetrical lead screw nuts 44 are installed on each of the lead screws 43. The lead screw nut 44 is fixedly connected to the straightening plate 45. The upper and lower clamps 4 can automatically achieve vertical positioning during the clamping process, effectively avoiding the influence of the inclination of the steel bars on the test accuracy, thereby significantly improving the reliability and accuracy of the test.

[0029] Embodiment 1:

[0030] Specifically, the support plate 31 is a rectangular frame structure, and a plurality of such support plates 31 are further subdivided into a top plate, a movable plate and a bottom plate. The three are closely connected through a telescopic cover 32 and a shear guide mechanism 33, forming a flexible and stable structure. The top plate is fixedly mounted on the test platform 2, ensuring a solid foundation for the entire protective structure. The clamp 34 and the handle 35 are fixedly mounted on the bottom plate, providing a convenient operation and control method. On the test platform 2 below, a buckle seat matching the clamp 34 is installed to ensure that during the test process, the entire protective structure can be firmly locked on the test platform, further enhancing safety and stability.

[0031] Specifically, the telescopic cover 32 is an elastic corrugated cover, and its interface is rectangular to adapt to steel bars of different sizes. The telescopic cover 32 is located on the inner side of the shear guide mechanism 33, and plays a key protective role. The shear guide mechanism 33 is composed of a shear mechanism made of a plurality of plates, which are rotatably connected to each other to achieve flexible expansion and folding of the telescopic cover 32. At the same time, each plate is also rotatably connected to the support plate 31, so as to ensure that the entire protective structure covers the steel bars, thereby forming a closed protective space.

[0032] Specifically, a hydraulic rod is fixedly installed on the clamp base 41. The hydraulic rod serves as a power source and is used to push the two clamping blocks slidably installed inside the clamp base 41 to move. The clamp base 41 is designed with an inclined structure. When the hydraulic rod pushes the clamping block to slide along the inclined surface, the distance between the two movable clamping blocks will gradually decrease or increase according to the angle of the inclined surface. This design enables the clamping block to flexibly adapt to steel bars of different diameters, and to achieve a stable clamping of the steel bars by precisely controlling the extension and contraction amount of the hydraulic rod. This clamp structure is not only easy to operate, but also has a reliable clamping effect. It can ensure that the steel bars can maintain a stable vertical state during the steel bar tensile test, thereby improving the accuracy and safety of the test.

[0033] Specifically, the lead screw 43 is a bidirectional lead screw, provided with two sections of threads with different rotation directions, namely, one section of left-handed thread and one section of right-handed thread, and a lead screw nut 44 is installed on each of the two sections of threads. This configuration enables the lead screw 43 to simultaneously drive the lead screw nuts 44 on the two sections of threads to move in opposite directions when rotating. Each lead screw nut 44 is installed on a corresponding thread, and the relative position of the two lead screw nuts 44 can be accurately controlled by the rotation of the lead screw 43, thereby realizing the correction of the steel bars by the straightening plate 45.

[0034] Embodiment 2:

[0035] Clamping mechanism: The upper and lower clamps 4 utilize the hydraulic rod and inclined surface structure design in the clamp base 41. The hydraulic rod is extended and retracted to push the clamp blocks to slide along the inclined surface, so that the distance between the clamp blocks is gradually reduced or expanded to adapt to steel bars of different diameters and achieve stable clamping.

[0036] Vertical positioning: During the operation of the clamping mechanism, the bidirectional lead screw 43 drives the two lead screw nuts 44 to move in opposite directions through two sections of threads with different rotation directions, thereby controlling the position of the straightening plate 45, so that the steel bar can be automatically positioned vertically to ensure the accuracy of the test results.

[0037] Safety protection: The protective telescopic cover 3 uses an elastic corrugated cover and a shear guide mechanism 33, which can be flexibly folded and extended to adapt to steel bars of different lengths. During the test, the protective telescopic cover 3 can cover the steel bars to form a closed protective space to prevent the particles splashed after the steel bars break from causing damage to the surrounding environment and personnel.

[0038] Embodiment three:

[0039] Preparation stage: Place the steel bar to be tested on the test platform 2, and adjust the distance between the clamps of the upper and lower clamps 4 according to the diameter of the steel bar. By controlling the extension and retraction of the hydraulic rod, the clamps can tightly clamp the steel bar.

[0040] Vertical positioning: Start the motor in the fixture base 41 to drive the bidirectional lead screw 43 to rotate. The rotation of the lead screw 43 causes the two lead screw nuts 44 to move in opposite directions, thereby driving the straightening plate 45 to correct the steel bar to keep it in a vertical state.

[0041] Safety protection: Before the test begins, the handle 35 of the protective telescopic cover 3 is pulled to extend the entire cover, and the cover is locked on the test platform 2 below by operating the clamp 34. The protective telescopic cover 3 covers the steel bars, thereby forming a closed protective space.

[0042] Testing stage: Start the pulling test cylinder 5 to perform a tensile test on the steel bar. During the test, the protective telescopic cover 3 can effectively prevent the particles splashed after the steel bar breaks from causing damage to the surrounding environment and personnel.

[0043] End of test: After the test is completed, close the pulling test cylinder 5, unlock the protective telescopic cover 3, fold and retract the protective telescopic cover 3 by elasticity, and release the upper and lower clamps 4 by controlling the hydraulic rod and the motor. Then, remove the steel bar and prepare for the next test.

[0044] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A minimum reinforcement ratio tensile test device, characterized in that: The invention comprises a test frame (1), a test platform (2), a protective telescopic cover (3), upper and lower clamps (4) and a pulling test cylinder (5); two test platforms (2) are slidably mounted on the inner side of the test frame (1); the upper and lower clamps (4) are fixedly mounted on each of the test platforms (2); the protective telescopic cover (3) is fixedly mounted on one of the test platforms (2); the two test platforms (2) are fixedly connected to the output end of the pulling test cylinder (5); the pulling test cylinder (5) is fixedly mounted on the outer top of the test frame (1) and the lower inner part of the test frame (1); The protective telescopic cover (3) comprises a support plate (31), a telescopic cover (32), a shearing guide mechanism (33), a clamp (34) and a handle (35); the support plate (31) is fixedly mounted on the test platform (2); a plurality of support plates (31) are provided, and each of the support plates (31) is connected via the telescopic cover (32) and the shearing guide mechanism (33); the clamp (34) and the handle (35) are fixedly mounted on one of the support plates (31) in a mirror-symmetrical manner; Two upper and lower clamps (4) are provided, and the two upper and lower clamps (4) are respectively an upper clamp and a lower clamp, and the upper and lower clamps have the same structure, and the upper clamp of the two upper and lower clamps (4) is located on the inner side of the protective telescopic cover (3); The upper and lower clamps (4) include a clamp base (41), a movable groove (42), a lead screw (43), a lead screw nut (44) and a straightening plate (45); the clamp base (41) is fixedly mounted on the test platform (2); the movable groove (42) is mirror-symmetrically provided on the upper side of the clamp base (41); the lead screw (43) is rotatably mounted in each of the movable grooves (42); either end of the lead screw (43) is fixed to the output end of the motor built into the clamp base (41); each of the lead screws (43) is mounted with two mirror-symmetrical lead screw nuts (44); the lead screw nut (44) is fixedly connected to the straightening plate (45).

2. A minimum reinforcement ratio tensile test device as claimed in claim 1, characterized in that: The support plate (31) is a rectangular frame structure. A plurality of the support plates (31) are divided into a top plate, a movable plate and a bottom plate. The three are connected via the telescopic cover (32) and the shear guide mechanism (33). The top plate is fixedly mounted on the test platform (2). The clamping head (34) and the handle (35) are fixedly mounted on the bottom plate. A buckle seat matching the clamping head (34) is mounted on the test platform (2) below.

3. A minimum reinforcement ratio tensile test device as claimed in claim 1, characterized in that: The telescopic cover (32) is an elastic corrugated cover, and its interface is rectangular. The telescopic cover (32) is located on the inner side of the shearing guide mechanism (33). The shearing guide mechanism (33) is a shearing mechanism made of a plurality of plate bodies, each of which is rotatably connected to each other and is also rotatably connected to the support plate (31).

4. A minimum reinforcement ratio tensile test device as claimed in claim 1, characterized in that: A hydraulic rod is fixedly mounted on the clamp base (41), and the hydraulic rod is used to push two clamping blocks slidably mounted inside the clamp base (41) to move. Under the action of the inclined surface of the clamp base (41), the distance between the two movable clamping blocks will gradually decrease or increase.

5. A minimum reinforcement ratio tensile test device as claimed in claim 1, characterized in that: The lead screw (43) is a bidirectional lead screw having two sections of threads with different rotation directions, namely, one section of left-handed thread and one section of right-handed thread. A lead screw nut (44) is mounted on both sections of threads.

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