Search

CN-121994627-A - Multi-angle inclined fixed rebound strength testing method and equipment for laminated slab

CN121994627ACN 121994627 ACN121994627 ACN 121994627ACN-121994627-A

Abstract

The invention discloses a method and equipment for testing multi-angle inclined fixed rebound strength of a laminated slab, relates to the technical field of laminated slab detection, and aims at solving the problems that the existing laminated slab rebound test is mostly horizontally placed and cannot reflect actual inclined working conditions, and the existing device is poor in adaptability, unstable in fixation and low in detection precision. Realize the platform truck multi-angle slope through angle inclination adjusting part, press from both sides the fixed superimposed sheet of tight fixed subassembly stability, the straightness calibration subassembly that hangs down guarantees that test axis and test face are perpendicular, cooperates X, Y axle adjusting part to accomplish multi-position test. The invention can truly simulate the actual inclined working condition of the laminated slab, adapt to laminated slabs with different specifications, promote the fixing stability and the detection precision and ensure the safety of the building structure.

Inventors

  • LUO YANG
  • Lai Tinglan
  • WANG CHUANPING
  • ZHOU MI
  • WEI CHUANJIE

Assignees

  • 泸州临港工业化建筑科技有限公司

Dates

Publication Date
20260508
Application Date
20260401

Claims (8)

  1. 1. The utility model provides a fixed resilience intensity test equipment of superimposed sheet multi-angle slope, includes base (1), its characterized in that still includes: the support column (2) is fixed at the top end of the base (1); The carrying platform (3) is arranged at the top end of the supporting column (2) and is used for carrying the laminated slab; The angle inclination adjusting assembly (4) is arranged at one side of the bottom end of the carrying platform (3) and is used for driving the carrying platform (3) to incline to a preset angle relative to the horizontal plane; A clamping and fixing assembly (5) arranged on the carrying platform (3) and used for releasably clamping and fixing the superimposed sheet on the surface of the carrying platform (3); The stand (6) is arranged on the base (1) and spans over the carrying platform (3), and a telescopic component (13) for adjusting the angle of the stand (6) is arranged at the bottom end of the stand; An X-axis adjusting component (7) which is arranged on the vertical frame (6); The Y-axis adjusting assembly (8) is arranged on the X-axis adjusting assembly (7) and is driven by the X-axis adjusting assembly (7) to move along a horizontal first direction; The electric telescopic rod (9) is arranged on the Y-axis adjusting assembly (8) and is driven by the Y-axis adjusting assembly (8) to move along a horizontal second direction; the rebound test assembly (10) is arranged at the telescopic end of the electric telescopic rod (9) and is used for testing rebound strength of the laminated slab; The verticality calibration assembly (12) is arranged on the Y-axis adjustment assembly (8) and the carrying platform (3) and is used for detecting and ensuring that the test axis of the rebound test assembly (10) is vertical to the test surface of the laminated plate; The controller (11) is fixed on the vertical frame (6), and is electrically connected with the angle inclination adjusting component (4), the clamping and fixing component (5), the X-axis adjusting component (7), the Y-axis adjusting component (8), the electric telescopic rod (9), the rebound testing component (10), the verticality calibrating component (12) and the telescopic component (13) respectively.
  2. 2. The multi-angle inclined fixed rebound strength testing device for the laminated slab according to claim 1, wherein a connecting seat (301) is fixedly arranged at the bottom end of the carrying platform (3), and the top ends of the supporting columns (2) are movably connected with the connecting seat (301).
  3. 3. The multi-angle inclination fixed rebound strength testing device for the laminated slab according to claim 1, wherein the angle inclination adjusting assembly (4) comprises a hollow column (401), a worm wheel (402), a first screw rod (403), a lifting column (404), a double-headed motor (405), a transmission rod (406), a worm (407), a supporting seat (408) and a limiting seat (409); The hollow column (401) is fixedly mounted on the base (1), the top end of the lifting column (404) is connected with the bottom end of the limiting seat (409), the bottom end of the lifting column is slidably arranged in the hollow column (401), the first screw rod (403) is rotatably arranged in the hollow column (401) and is in threaded fit with the lifting column (404), the worm wheel (402) is arranged in the hollow column (401) and is coaxially fixed on the first screw rod (403), the double-headed motor (405) is fixed on the base (1), one end of the transmission rod (406) is connected with one output end of the double-headed motor (405), the worm (407) is fixed on the other end of the transmission rod (406) and is meshed with the worm wheel (402), and the supporting seat (408) is fixedly connected with the base (1) in a penetrating and rotating mode.
  4. 4. The multi-angle oblique fixation resilience strength test equipment for laminated plates according to claim 1, wherein the clamping and fixation assembly (5) comprises a plugboard (501), a second screw rod (502), a limiting plate (503), a pressure sensor (504), a hand wheel (505) and an ear plate (506); The inserting plate (501) is connected with the inserting groove formed in the top end of the carrying platform (3) in an inserting mode, the second screw rod (502) is in threaded fit with the inserting plate (501), the limiting plate (503) is arranged at one end of the second screw rod (502), the pressure sensor (504) is embedded on the clamping surface of the limiting plate (503) and used for detecting clamping force, the hand wheel (505) is arranged at the other end of the second screw rod (502), and the lug plates (506) are fixedly arranged at two ends of the inserting plate (501).
  5. 5. The multi-angle inclined fixed rebound strength test equipment for the laminated slab according to claim 1, wherein the X-axis adjusting assembly (7) comprises a third screw rod (701), a first movable block (702), a first motor (703) and a guide rod (704); the third screw rod (701) is rotatably arranged between the two groups of vertical frames (6), the first motor (703) is fixed on one group of vertical frames (6), the output end of the first motor is connected with the third screw rod (701), the guide rod (704) is fixed between the two groups of vertical frames (6) and is arranged in parallel with the third screw rod (701), and the first movable block (702) is connected to the third screw rod (701) in a threaded manner and is sleeved on the guide rod (704) in a sliding manner; the Y-axis adjusting component (8) is mounted on the first movable block (702).
  6. 6. The multi-angle oblique fixed resilience strength test equipment for laminated plates according to claim 5, wherein the Y-axis adjusting assembly (8) comprises a guide rail frame (801), a second motor (802), a fourth screw (803) and a second movable block (804); The guide rail frame (801) is fixedly arranged at the bottom end of the first movable block (702), the fourth screw rod (803) is rotatably arranged in the guide rail frame (801), the second motor (802) is fixed at one end of the guide rail frame (801), the output end of the second motor is connected with the fourth screw rod (803), and the second movable block (804) is in threaded connection with the fourth screw rod (803) and is in sliding fit with the guide rail frame (801); The electric telescopic rod (9) is fixed at the bottom end of the second movable block (804).
  7. 7. The multi-angle oblique fixed resilience strength test equipment for laminated plates according to claim 6, wherein the perpendicularity calibration assembly (12) comprises a transverse plate (1201), a laser transmitter (1202) and a laser receiver (1203); The transverse plate (1201) is fixed on one side of the guide rail frame (801), the laser transmitter (1202) is fixedly arranged at the bottom end of the transverse plate (1201), and the laser receiver (1203) is arranged on the carrier (3) and is used for receiving laser signals sent by the laser transmitter (1202).
  8. 8. A method for testing multi-angle oblique fixed rebound strength of a laminated slab based on the device of any one of claims 1 to 7, comprising the following steps: S1, placing a laminated slab to be tested, namely placing the laminated slab to be tested on a bearing surface of a carrying platform (3), and clamping and fixing the laminated slab through a clamping and fixing assembly (5) until a pressure value detected by a pressure sensor (504) of the clamping and fixing assembly (5) reaches a preset threshold value, so as to finish the fixing of the laminated slab; S2, adjusting the angle of the carrying platform, namely starting an angle inclination adjusting component (4) through a controller (11), driving a lifting column (404) to do lifting motion by a double-end motor (405), driving the carrying platform (3) to rotate around the top end of the supporting column (2) by the lifting column (404) in cooperation with the rotating connection relation of the supporting column (2) and the carrying platform (3), and controlling the double-end motor (405) to stop working by the controller (11) until the carrying platform (3) is adjusted to a preset test angle; S3, verticality calibration, namely starting the telescopic component (13) through the controller (11) to adjust the angle of the vertical frame (6), synchronously starting the laser emitting component (1202) of the verticality calibration component (12) until laser emitted by the laser emitting component (1202) is vertically projected to the test surface of the laminated slab, and finishing verticality calibration of the rebound test component (10) and the test surface of the laminated slab by taking a laser signal received by the laser receiving component (1203) as a preset standard signal; S4, a rebound intensity test is carried out, namely a telescopic driving piece (9) is started through a controller (11), the telescopic driving piece (9) pushes a rebound test assembly (10) to move towards a laminated plate test surface, the rebound test assembly (10) is enabled to be in contact with the laminated plate test surface and finish a rebound operation, the rebound value of the rebound test assembly (10) is recorded, a single test is completed, then an X-axis adjusting assembly (7) and a Y-axis adjusting assembly (8) are started through the controller (11), the telescopic driving piece (9) and the rebound test assembly (10) are driven to move in the X-axis and Y-axis directions, and rebound intensity tests of a plurality of positions of the laminated plate under the same inclination angle are completed; S5, multi-position multi-angle testing, namely repeating the steps S2-S4, adjusting the carrying platform (3) to different preset inclination angles, and completing rebound strength testing of the laminated slab under different inclination angles; S6, test data arrangement, namely collecting rebound values of different inclination angles and different test positions, and calculating compressive strength of the laminated slab in different inclination states by combining a correlation formula of concrete rebound strength and rebound values to finish multi-angle inclination fixed rebound strength test of the whole laminated slab.

Description

Multi-angle inclined fixed rebound strength testing method and equipment for laminated slab Technical Field The invention belongs to the technical field of laminated slab detection, and particularly relates to a multi-angle inclined fixed rebound strength test method and equipment for laminated slabs. Background The composite slab is used as a core member of an assembled building, the rebound strength of concrete directly determines the bearing capacity and the safety of the building structure, and the rebound method is used as a nondestructive testing method which is simple and convenient to operate, low in cost and free of damage to the structure, is widely applied to the strength detection of the composite slab, and the core principle is that the compressive strength of the composite slab is estimated by measuring the ratio (namely rebound value) of the rebound distance of a heavy hammer to the position distance of a rebound rod before impact according to the correlation between the surface hardness of the concrete and the compressive strength. At present, the rebound strength test of the laminated slab is mainly carried out in a horizontal placement and fixing mode, however, in actual engineering, the laminated slab is always in inclined states of different angles in the processes of lifting, mounting and using, the stress mode and the horizontal state of the laminated slab are obviously different in the inclined states, the rebound strength only through the horizontal state test cannot truly reflect the strength performance in the actual working state, the detection result is likely to be disjointed from the actual working condition, and potential safety hazards exist. In the prior art, although a small amount of rebound test devices aiming at any angle of a concrete test block exist, the rebound test device is only suitable for small test blocks and cannot be adapted to superimposed sheets of different specifications, meanwhile, the existing device is poor in fixing stability, slipping and shaking of the superimposed sheets easily occur in the tilting process, so that rebound test errors are large, and in addition, the problem of calibrating the verticality of a rebound instrument and a test surface in the tilting state of the superimposed sheets is not considered in the existing test equipment, so that the detection precision is further affected. For the problems in the related art, no effective solution has been proposed at present. Therefore, in order to solve the problems, the invention provides a method and equipment for testing the multi-angle inclined fixed rebound strength of the laminated slab. Disclosure of Invention In order to overcome the technical problems, the invention aims to provide a multi-angle inclined fixed rebound strength test method and equipment for a laminated plate. The aim of the invention can be achieved by the following technical scheme: the utility model provides a fixed resilience intensity test equipment of superimposed sheet multi-angle slope, includes the base, still includes: The support column is fixed at the top end of the base; The carrier is arranged at the top end of the support column and used for bearing the superimposed sheet; the angle inclination adjusting assembly is arranged at one side of the bottom end of the carrying platform and is used for driving the carrying platform to incline to a preset angle relative to the horizontal plane; The clamping and fixing assembly is arranged on the carrier and used for releasably clamping and fixing the laminated plate on the surface of the carrier; The stand is arranged on the base and spans over the carrying platform, and a telescopic component for adjusting the angle of the stand is arranged at the bottom end of the stand; The X-axis adjusting component is arranged on the vertical frame; The Y-axis adjusting assembly is arranged on the X-axis adjusting assembly and is driven by the X-axis adjusting assembly to move along a horizontal first direction; The electric telescopic rod is arranged on the Y-axis adjusting assembly and is driven by the Y-axis adjusting assembly to move along a horizontal second direction; The rebound test assembly is arranged at the telescopic end of the electric telescopic rod and is used for testing rebound strength of the laminated slab; The verticality calibration assembly is arranged on the Y-axis adjustment assembly and the carrier and is used for detecting and ensuring that the test axis of the rebound test assembly is vertical to the test surface of the superimposed sheet; And the controller is fixed on the vertical frame and is electrically connected with the angle inclination adjusting assembly, the clamping and fixing assembly, the X-axis adjusting assembly, the Y-axis adjusting assembly, the electric telescopic rod, the rebound testing assembly, the verticality calibrating assembly and the telescopic assembly respectively. As a preferable technical scheme of the invention, a c