Concrete flexural tensile strength test platform

Abstract

The invention relates to a concrete flexural tensile strength test platform, and relates to the technical field of concrete mechanical property tests.The concrete flexural tensile strength test platform comprises an equipment platform, a portal frame and a lifting mechanism, a supporting assembly is arranged on the equipment platform, a tool assembly is arranged on the supporting assembly, a quick release assembly is arranged on the supporting assembly, and the portal frame is arranged on the lifting mechanism; the quick release assembly comprises a mounting box, a servo gear motor is fixedly connected to the bottom of the mounting box, a rotating disc is fixedly connected to an output shaft of the servo gear motor, a protruding block is fixedly connected to the top of the rotating disc, a moving frame is slidably connected to the interior of the mounting box, and a connecting rod is fixedly connected to one side of the moving frame. The side, away from the movable frame, of the connecting rod is fixedly connected with a positioning plate. Through cooperative use of the adapter and the quick release assembly arranged on the supporting platform, the function of replacing different tool assemblies is achieved, and the effect of concrete testing in different scenes is achieved.

Description

Technical Field

[0001] The present application relates to a concrete mechanical property test, and in particular to a concrete flexural tensile strength test platform. Background Art

[0002] Concrete is one of the essential raw materials for road and house construction. Its own flexural and tensile strength directly affects the strength and durability of roads and buildings. Therefore, conducting flexural and tensile tests on concrete is an important method to test the mechanical properties of concrete.

[0003] The current fixed tooling of the flexural tensile strength test platform has a single function and cannot quickly switch test modes. As a result, concrete parts need to be tested separately on multiple machines to obtain concrete strength results, which increases the complexity and time cost of the test.

[0004] In view of the above-mentioned related technologies, it is necessary to propose a concrete flexural tensile strength test platform. Summary of the Invention

[0005] The purpose of this application is to provide a concrete flexural tensile strength test platform to solve the above-mentioned problems.

[0006] The present application provides a concrete flexural tensile strength test platform that adopts the following technical solution: comprising an equipment platform, a gantry, and a lifting mechanism; the equipment platform is provided with a support assembly, the support assembly is provided with a tooling assembly, and the support assembly is provided with a quick-release assembly; The quick-release assembly includes an installation box, the bottom of the installation box is fixedly connected to a servo reduction motor, the output shaft of the servo reduction motor is fixedly connected to a turntable, the top of the turntable is fixedly connected to a protrusion, the interior of the installation box is slidably connected to a moving frame, one side of the moving frame is fixedly connected to a connecting rod, and the side of the connecting rod away from the moving frame is fixedly connected to a positioning plate.

[0007] Preferably, the gantry is fixedly connected to the top of the equipment platform, the lifting mechanism is installed on the inner side of the gantry, and a conversion joint is installed at the bottom of the lifting mechanism.

[0008] By adopting the above technical solution, the gantry is fixedly connected to the top of the equipment platform, providing a stable installation foundation for the lifting mechanism, ensuring the stability of the lifting mechanism during operation, and reducing measurement errors caused by factors such as vibration; the lifting mechanism is installed on the inner side of the gantry, rationally utilizing the spatial structure, making the layout of the entire test platform more compact; a conversion joint is installed at the bottom of the lifting mechanism, and the setting of the conversion joint facilitates rapid and accurate connection and disassembly with the upper tooling, thereby improving the operating efficiency and flexibility of the test platform, and can adapt to the replacement needs of upper tooling of different specifications or types, thereby meeting the diverse requirements of concrete flexural tensile strength tests.

[0009] Preferably, the support assembly includes a raised cylinder, which is fixedly connected to the top of the equipment platform and is located directly below the conversion joint. A positioning cap is sleeved on the outer side of the raised cylinder, and the top of the positioning cap is fixedly connected to the support platform. Four support legs are installed on the support platform in a centrally symmetrical distribution.

[0010] By adopting the above technical solution, the raised cylinder in the support assembly is fixedly connected to the top of the equipment platform and is located directly below the conversion joint, providing a precise positioning reference for the support platform, ensuring that the pressure applied by the upper tooling through the conversion joint can be accurately transmitted to the support platform; a positioning cap is provided on the outer side of the raised cylinder, which serves to connect and position the support platform, so that the support platform can be stably installed on the raised cylinder, and four support legs are installed on the support platform in a centrally symmetrical distribution. The four support legs provide uniform and stable support for the lower tooling, ensuring that the lower tooling will not shake or tilt during the test, thereby ensuring the accuracy and reliability of the test results.

[0011] Preferably, the tooling assembly includes a lower tooling, the lower tooling is placed on the top surface of the support platform, and the upper tooling is connected to the conversion joint.

[0012] By adopting the above technical solution, the lower tooling in the tooling assembly is placed on the top surface of the support platform, providing a platform for placing and fixing the concrete specimens, ensuring that the concrete specimens can maintain a stable position during the test; the upper tooling is connected to the conversion joint, and the upper tooling is connected to the lifting mechanism through the conversion joint. Under the drive of the lifting mechanism, the upper tooling can apply pressure to the concrete specimens on the lower tooling to realize the concrete flexural tensile strength test.

[0013] Preferably, the installation box is fixedly connected to the bottom of the support platform, and there are two installation boxes, which are respectively located at the front and rear sides of the equipment platform.

[0014] By adopting the above technical solution, the installation box is fixedly connected to the bottom of the support platform, providing an installation base for other components of the quick-release assembly, so that the quick-release assembly can form a whole with the support platform, which is convenient for operation and control; there are two installation boxes and they are located on the front and rear sides of the equipment platform respectively. This symmetrical distribution design can position and fix the lower tooling from two directions, thereby improving the stability and accuracy of the installation of the lower tooling, reducing the shaking or deviation that may be caused by unilateral fixation, and thus ensuring the accuracy of the test results.

[0015] Preferably, the output shaft of the servo reduction motor extends into the installation box and is fixedly connected to the turntable, and the number of the protrusions is two and they are centrally symmetrically distributed on the top of the turntable.

[0016] By adopting the above technical solution, the output shaft of the servo reduction motor extends into the installation box and is fixedly connected to the turntable. The servo reduction motor can provide precise power output for the turntable. By controlling the speed and direction of the servo reduction motor, precise control of the rotation of the turntable is achieved; there are two protrusions and they are centrally symmetrically distributed on the top of the turntable. This symmetrical distribution design enables the two protrusions to interact with the moving frame alternately or simultaneously during the rotation of the turntable, pushing the moving frame to reciprocate, thereby realizing the positioning and release function of the quick-release assembly on the lower tooling, and improving the stability and reliability of the operation.

[0017] Preferably, a strip-shaped avoidance hole is provided on the movable frame, and the size of the strip-shaped avoidance hole is adapted to the moving track of the protrusion.

[0018] By adopting the above technical solution, the setting of the strip avoidance hole enables the protrusion to pass through the moving frame smoothly during the rotation process, thereby pushing the moving frame to move horizontally. This design avoids interference between the protrusion and the moving frame, ensuring the normal operation of the quick-release assembly. At the same time, the precise adaptation of the size of the strip avoidance hole to the moving trajectory of the protrusion also improves the accuracy and stability of the movement of the moving frame, thereby ensuring the positioning accuracy of the positioning plate on the lower tooling.

[0019] Preferably, both sides of the movable frame are fixedly connected with limit blocks, and the inner wall of the installation box is provided with limit grooves adapted to the moving tracks of the limit blocks.

[0020] By adopting the above technical solution, the matching structure of the limit block and the limit groove can limit the moving direction of the movable frame so that it can only move horizontally along the direction specified by the limit groove, preventing the movable frame from offsetting or shaking during the movement. This design improves the stability and accuracy of the movement of the movable frame, thereby ensuring the reliability of the positioning plate for the lower tooling and reducing the test error caused by the unstable movement of the movable frame.

[0021] Preferably, the connecting rod is U-shaped, and two connecting rods are installed on a single installation box. The opposite sides of the two connecting rods are fixedly connected with positioning plates that fit into both sides of the lower tooling, and the side of the positioning plate close to the lower tooling is provided with anti-slip bumps.

[0022] By adopting the above technical solution, the U-shaped design enables the connecting rod to provide a more stable connection structure when connecting the moving frame and the positioning plate, thereby enhancing the strength and rigidity of the entire quick-release assembly; two connecting rods are installed on a single installation box, and the opposite sides of the two connecting rods are fixedly connected with positioning plates that fit on both sides of the lower tooling. This double positioning plate design can position the lower tooling from two directions, thereby improving the stability and accuracy of the installation of the lower tooling; the positioning plate is provided with anti-slip bumps on the side close to the lower tooling, and the anti-slip bumps can increase the friction between the positioning plate and the lower tooling, thereby preventing the lower tooling from sliding during the test, thereby ensuring the accuracy and reliability of the test results.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. This concrete flexural tensile strength test platform starts the servo reduction motor to drive the turntable to rotate forward, so that the two protrusions on the top of the turntable rotate synchronously. Under the joint restriction of the limit block and the limit groove, and driven by the protrusions, the two movable frames in the installation box move away from each other. Under the connection of the connecting rod, the positioning plates on both sides of the lower tooling move away from each other. At this time, the lower tooling can be smoothly removed for replacement. The lower tooling for another test is placed on the support platform. The servo reduction motor is started to drive the turntable to reverse, and the positioning plates on both sides move relatively until the lower tooling is fixed. The advantage of quick disassembly and assembly between the support platform and the lower tooling is achieved, so as to facilitate various concrete tests and expand the scope of application of the entire test platform. 2. This concrete flexural tensile strength test platform can be replaced by replacing the lower tooling through the installation and removal of the conversion joint and the upper tooling, facilitating the performance of various concrete tests, further expanding the applicability of the entire test platform. 3. This concrete flexural tensile strength test platform can be quickly and accurately installed by putting the positioning cap at the bottom of the support platform onto the outside of the raised cylinder on the top of the equipment platform, so as to facilitate the subsequent placement of different types of lower-level tooling to adapt to different testing scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a concrete flexural tensile strength test platform; Figure 2 It is a schematic diagram of the overall structure of the other axis side of a concrete flexural tensile strength test platform; Figure 3It is a structural diagram of a concrete flexural tensile strength test platform gantry and its related components; Figure 4 It is a structural diagram of the support assembly of a concrete flexural tensile strength test platform and its related parts; Figure 5 It is a schematic diagram of the structure of a concrete flexural tensile strength test platform tooling assembly and its related parts; Figure 6 It is a schematic diagram of the internal structure of the quick-disassembly components of a concrete flexural tensile strength test platform.

[0025] Explanation of the accompanying drawings: 1. Equipment platform; 2. Gantry; 3. Lifting mechanism; 301. Conversion joint; 4. Support assembly; 401. Raised cylinder; 402. Positioning cap; 403. Support platform; 5. Tooling assembly; 501. Lower tooling; 502. Upper tooling; 6. Quick-release assembly; 601. Installation box; 602. Servo reduction motor; 603. Turntable; 604. Bump; 605. Moving frame; 606. Connecting rod; 607. Positioning plate. DETAILED DESCRIPTION

[0026] The following combination Figures 1-6 , further details of this application are given.

[0027] Example 1: A concrete flexural tensile strength test platform, referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , including an equipment platform 1, a gantry 2 and a lifting mechanism 3, a support assembly 4 is provided on the equipment platform 1, a tooling assembly 5 is provided on the support assembly 4, and a quick-release assembly 6 is provided on the support assembly 4; The gantry 2 is fixedly connected to the top of the equipment platform 1 , the lifting mechanism 3 is installed on the inner side of the gantry 2 , and a conversion joint 301 is installed at the bottom of the lifting mechanism 3 .

[0028] The support assembly 4 includes a raised cylinder 401, which is fixedly connected to the top of the equipment platform 1 and is located directly below the conversion joint 301. A positioning cap 402 is sleeved on the outer side of the raised cylinder 401, and the top of the positioning cap 402 is fixedly connected to a support platform 403. Four support legs are installed on the support platform 403 in a centrally symmetrical distribution.

[0029] The tooling assembly 5 includes a lower tooling 501 , which is placed on the top surface of the support platform 403 , and an upper tooling 502 is connected to the conversion joint 301 .

[0030] The implementation principle of the embodiment of the present application is as follows: the gantry 2 is firmly fixed to the top of the equipment platform 1, providing a stable installation support for the lifting mechanism 3, the lifting mechanism 3 is installed on the inner side of the gantry 2, rationally utilizing the space and its bottom conversion joint 301 facilitates the quick and accurate connection and disassembly of the upper tooling 502 to adapt to the replacement requirements of upper tooling 502 of different specifications or types, the raised cylinder 401 in the support assembly 4 is fixed to the top of the equipment platform 1 and is located directly below the conversion joint 301, providing precise positioning for the support platform 403, and the raised cylinder 401 The outer positioning cap 402 serves to connect and position the support platform 403. The four supporting legs on the support platform 403 provide uniform and stable support for the lower tooling 501. The lower tooling 501 in the tooling assembly 5 is placed on the top surface of the support platform 403 to fix the concrete specimen. The upper tooling 502 is connected to the lifting mechanism 3 through the conversion joint 301. Driven by the lifting mechanism 3, pressure is applied to the concrete specimen on the lower tooling 501, thereby realizing the concrete flexural tensile strength test. The coordinated work of each component ensures the smooth progress of the test.

[0031] Example 2: A concrete flexural tensile strength test platform, referring to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The quick-release assembly 6 includes an installation box 601, the bottom of the installation box 601 is fixedly connected to a servo reduction motor 602, the output shaft of the servo reduction motor 602 is fixedly connected to a turntable 603, the top of the turntable 603 is fixedly connected to a protrusion 604, the interior of the installation box 601 is slidably connected to a moving frame 605, one side of the moving frame 605 is fixedly connected to a connecting rod 606, and the side of the connecting rod 606 away from the moving frame 605 is fixedly connected to a positioning plate 607.

[0032] The servo reduction motor 602 plays a key role. Its operating principle combines the precise control characteristics of a servo motor with the torque-increasing and decelerating functions of a reduction gear. Specifically, the servo motor operates based on the principle of electromagnetic induction. When three-phase AC power is applied to the stator windings of the servo motor, a rotating magnetic field is generated in the air gap between the stator and rotor, which drives the rotor to rotate. The reduction gear utilizes gear meshing to achieve both speed reduction and torque increase. In the servo reduction motor 602, a combination of gears with different numbers of teeth allows the smaller gear to rotate the larger gear. Due to the larger number of teeth on the larger gear, the smaller gear only rotates a small fraction of the larger gear for each revolution, thus achieving a deceleration effect. The servo reduction motor 602 combines the high-precision control characteristics of the servo motor with the torque-increasing and deceleration functions of the reducer. In the quick-release assembly 6, the servo reduction motor 602 serves as a power source to accurately control the rotation of the turntable 603. By controlling the forward and reverse rotation of the servo reduction motor 602, the protrusion 604 on the turntable 603 can be rotated according to the set direction and angle, thereby pushing the moving frame 605 to move horizontally back and forth, and finally realizing the rapid positioning and release of the positioning plate 607 on the lower tooling 501, meeting the demand for rapid replacement of the lower tooling 501 in different concrete tests, and ensuring that the test platform can adapt to a variety of test scenarios.

[0033] The installation box 601 is fixedly connected to the bottom of the support platform 403 . There are two installation boxes 601 , which are located at the front and back sides of the equipment platform 1 , respectively.

[0034] The output shaft of the servo reduction motor 602 extends into the installation box 601 and is fixedly connected to the turntable 603 . There are two protrusions 604 , which are centrally symmetrically distributed on the top of the turntable 603 .

[0035] The moving frame 605 is provided with a strip-shaped avoidance hole, the size of which is adapted to the moving trajectory of the protrusion 604 .

[0036] Limit blocks are fixedly connected to both sides of the moving frame 605, and the inner wall of the installation box 601 is provided with limit grooves that are compatible with the moving tracks of the limit blocks.

[0037] The connecting rod 606 is U-shaped, and two connecting rods 606 are installed on a single installation box 601. The opposite sides of the two connecting rods 606 are fixedly connected with positioning plates 607 that fit into both sides of the lower tooling 501. The positioning plate 607 is provided with anti-slip bumps on the side close to the lower tooling 501.

[0038] The implementation principle of the embodiment of the present application is as follows: on the basis of embodiment 1, a quick-release component 6 is added, and the quick-release component 6 is installed at the bottom of the support platform 403 of the support component 4. Its installation box 601 is fixed at the bottom of the support platform 403 and is symmetrically distributed on the front and back sides of the equipment platform 1, providing a basis for the operation of the component. The servo reduction motor 602 is fixed at the bottom of the installation box 601, and its output shaft is connected to the turntable 603, which can accurately control the rotation of the turntable 603. The two protrusions 604 on the top of the turntable 603 are symmetrically distributed along with the turntable 603 and cooperate with the moving frame 605 slidingly connected in the installation box 601. The strip-shaped avoidance holes on the moving frame 605 allow the protrusions 604 to pass through smoothly and push it horizontally. Reciprocating motion, the limit blocks on both sides of the moving frame 605 cooperate with the limit grooves on the inner wall of the installation box 601 to limit its moving direction and ensure the stability of movement. The connecting rod 606 is U-shaped, and its two ends are respectively connected to the moving frame 605 and the positioning plate 607. The two positioning plates 607 position the lower tooling 501 from both sides, and the anti-slip bumps on the positioning plates 607 increase the friction to prevent sliding. By controlling the forward and reverse rotation of the servo reduction motor 602, the positioning plate 607 can quickly position and release the lower tooling 501. The upper tooling 502 connected with the conversion joint 301 is replaced, so that the same test platform can adapt to various concrete performance test requirements, which significantly improves the equipment utilization and test efficiency.

[0039] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A concrete flexural tensile strength test platform, comprising an equipment platform (1), a gantry (2) and a lifting mechanism (3), characterized in that: A support assembly (4) is provided on the equipment platform (1), a tooling assembly (5) is provided on the support assembly (4), and a quick-release assembly (6) is provided on the support assembly (4); The quick-release assembly (6) comprises an installation box (601), the bottom of the installation box (601) is fixedly connected to a servo reduction motor (602), the output shaft of the servo reduction motor (602) is fixedly connected to a turntable (603), the top of the turntable (603) is fixedly connected to a protrusion (604), the interior of the installation box (601) is slidably connected to a moving frame (605), one side of the moving frame (605) is fixedly connected to a connecting rod (606), and the side of the connecting rod (606) away from the moving frame (605) is fixedly connected to a positioning plate (607).

2. A concrete flexural tensile strength test platform according to claim 1, characterized in that: The gantry (2) is fixedly connected to the top of the equipment platform (1), the lifting mechanism (3) is installed on the inner side of the gantry (2), and a conversion joint (301) is installed at the bottom of the lifting mechanism (3).

3. A concrete flexural tensile strength test platform according to claim 2, characterized in that: The support assembly (4) comprises a raised cylinder (401), the raised cylinder (401) being fixedly connected to the top of the equipment platform (1) and being located directly below the conversion joint (301), a positioning cap (402) being sleeved on the outer side of the raised cylinder (401), the top of the positioning cap (402) being fixedly connected to a support platform (403), and four support legs being mounted on the support platform (403) and being symmetrically distributed in the center.

4. A concrete flexural tensile strength test platform according to claim 3, characterized in that: The tooling assembly (5) comprises a lower tooling (501), the lower tooling (501) being placed on the top surface of the support platform (403), and the upper tooling (502) being connected to the conversion joint (301).

5. A concrete flexural tensile strength test platform according to claim 3, characterized in that: The installation box (601) is fixedly connected to the bottom of the support platform (403), and there are two installation boxes (601) located at the front and rear sides of the equipment platform (1), respectively.

6. A concrete flexural tensile strength test platform according to claim 1, characterized in that: The output shaft of the servo reduction motor (602) extends into the installation box (601) and is fixedly connected to the turntable (603). The number of the protrusions (604) is two and they are centrally symmetrically distributed on the top of the turntable (603).

7. A concrete flexural tensile strength test platform according to claim 1, characterized in that: The movable frame (605) is provided with a strip-shaped avoidance hole, the size of which is adapted to the moving trajectory of the protrusion (604).

8. A concrete flexural tensile strength test platform according to claim 1, characterized in that: Both sides of the movable frame (605) are fixedly connected to limit blocks, and the inner wall of the installation box (601) is provided with limit grooves adapted to the movement track of the limit blocks.

9. A concrete flexural tensile strength test platform according to claim 4, characterized in that: The connecting rod (606) is U-shaped, and two connecting rods (606) are installed on a single installation box (601). The opposite sides of the two connecting rods (606) are fixedly connected to positioning plates (607) that fit on both sides of the lower tooling (501). The positioning plates (607) are provided with anti-slip bumps on the side close to the lower tooling (501).

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