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CN-224216421-U - Rebound testing device for concrete detection

CN224216421UCN 224216421 UCN224216421 UCN 224216421UCN-224216421-U

Abstract

The utility model relates to the technical field of concrete detection, and discloses a rebound testing device for concrete detection. The rebound testing device for concrete detection comprises a limiting plate, wherein a connecting rod is fixedly arranged above the limiting plate, a limiting frame is fixedly arranged on the inner side of the connecting rod, a shell is installed in the limiting frame in a penetrating mode, the bottom surface of the limiting plate can enable the connecting rod to keep perpendicular to a testing plane when the bottom surface of the limiting plate is in contact with the testing plane, the inner wall of the limiting frame is kept perpendicular to the testing plane, the position of the shell is limited by the two limiting frames when a firing pin is in contact with the top end of a hook due to the fact that sliding connection is formed between the shell and the limiting frame, a limiting pipe can keep perpendicular to the testing plane, the position of a driving rod is limited by the limiting pipe, the movement direction of a driving hammer is limited by the driving rod, and the movement path of the driving hammer and the testing plane keep parallel to the limiting pipe, so that the detection result is prevented from being influenced by the inclination of the device.

Inventors

  • CHEN PENG
  • ZHANG XUEGUI

Assignees

  • 龙里红狮混凝土有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (7)

  1. 1. The resilience testing device for concrete detection is characterized by comprising: Limiting plate (1), the top fixed mounting of limiting plate (1) has connecting rod (11), the inboard fixed mounting of connecting rod (11) has spacing (12), the inside of spacing (12) alternates and installs shell (13), the bottom fixed mounting of shell (13) has spacing pipe (14) the inside of spacing pipe (14) alternates and installs transfer line (15), the inside fixed mounting of shell (13) has excitation spring (16), the outside of transfer line (15) alternates and installs drive hammer (17), the top fixed mounting of transfer line (15) has connecting plate (18), the top movable mounting of shell (13) has end cover (19), the top fixed mounting of end cover (19) has display screen (110), the bottom center fixed mounting of end cover (19) has firing pin (111), the below fixed mounting of end cover (19) has reset spring (112) and distancer (113), the inside movable mounting of connecting plate (18) has jump ring (114), the top fixed mounting of couple (114) has jump ring (115).
  2. 2. The rebound testing device for concrete detection according to claim 1, wherein: The center of limiting plate (1) is provided with the open pore structure, connecting rod (11) regard the center of limiting plate (1) as the benchmark symmetry and install in the front and back both sides and the left and right sides of limiting plate (1), spacing (12) constitute fixed connection between through connecting rod (11) and limiting plate (1).
  3. 3. The rebound testing device for concrete detection according to claim 1, wherein: The limiting frame (12) is in sliding connection with the shell (13), the limiting pipe (14) is made of metal, the bottom end of the limiting pipe protrudes from the bottom end of the shell (13), and the limiting pipe (14) is in sliding connection with the transmission rod (15).
  4. 4. The rebound testing device for concrete detection according to claim 1, wherein: The driving rod (15) is fixedly connected with the connecting plate (18), an annular bulge which is embedded with the hook (114) is arranged at the top end of the driving hammer (17), and the driving hammer (17) is fixedly connected with the driving rod (15).
  5. 5. The rebound testing device for concrete detection according to claim 1, wherein: The top of excitation spring (16) and drive hammer (17) bottom fixed connection, and drive spring (16) bottom and shell (13) fixed connection, drive hammer (17) bottom be provided with spacing pipe (14) the protruding structure of unanimity of size.
  6. 6. The rebound testing device for concrete detection according to claim 1, wherein: One side of the connecting plate (18) is provided with an open pore structure matched with the position of the range finder (113), the end cover (19) is movably connected with the shell (13) through a thread structure, and the hook (114) is rotatably connected with the connecting plate (18).
  7. 7. The rebound testing device for concrete detection according to claim 1, wherein: The top of couple (114) is connected with the top fixed of jump ring (115), and the bottom and the connecting plate (18) fixed connection of jump ring (115), couple (114) are located under firing pin (111).

Description

Rebound testing device for concrete detection Technical Field The utility model relates to the technical field of concrete detection, in particular to a rebound testing device for concrete detection. Background The rebound method is a method for estimating the strength of concrete by using a weight driven by a spring, striking the surface of the concrete by a striking rod (dowel bar), measuring the rebound distance of the weight, and using the rebound value (the ratio of the rebound distance to the initial length of the spring) as an index related to the strength. Since the measurement is performed on the surface of the concrete, the method belongs to a surface hardness method, and is a detection method established based on the existence of correlation between the hardness and the strength of the surface of the concrete. The technical scheme is characterized by comprising a shell, wherein a flick rod is arranged in the shell along the axial direction of the shell, a connecting seat is arranged at the tail of the shell, connecting rods are arranged at two sides of the connecting seat along the radial direction of the shell, a connector is arranged at one end, close to the connecting seat, of the connecting seat, a U-shaped groove is formed in the connector, a fixing block matched in the U-shaped groove is arranged at two sides of the connecting seat, the connecting head penetrates through the fixing block and a rotating shaft of the connector at the same time in the direction perpendicular to the surface of the connector, and an inclined plane is arranged in the direction, away from the flick rod, of the fixing block. The existing hand-held rebound testing device needs to be kept relatively vertical between the holding device and the testing plane when in use, otherwise, accuracy of a detection result can be affected, device angles can not be limited when in use in a hand-held mode, detection is affected, meanwhile, the existing testing device generally reads through a shell scale tooth and a scale on a hammer, and the mode is low in efficiency and the reading can possibly deviate. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a rebound testing device for concrete detection, which has the advantages of keeping the device vertical to a testing plane, being convenient for recording measured values and the like, and solves the technical problems. (II) technical scheme The rebound testing device for concrete detection comprises a limiting plate, wherein a connecting rod is fixedly arranged above the limiting plate, a limiting frame is fixedly arranged on the inner side of the connecting rod, a shell is installed in the limiting frame in a penetrating mode, a limiting pipe is fixedly arranged at the bottom end of the shell, a transmission rod is installed in the limiting pipe in a penetrating mode, an excitation spring is fixedly installed in the shell, a driving hammer is installed in the transmission rod in a penetrating mode, a connecting plate is fixedly installed at the top end of the transmission rod, an end cover is movably installed at the top end of the shell, a display screen is fixedly installed above the end cover, a firing pin is fixedly installed at the bottom center of the end cover, a reset spring and a range finder are fixedly installed below the end cover, a hook is movably installed in the connecting plate, a clamp spring is fixedly installed at the top end of the hook, and the position of the limiting pipe can be limited by the shell. According to the utility model, an open pore structure is arranged at the center of the limiting plate, the connecting rods are symmetrically arranged at the front side, the rear side, the left side and the right side of the limiting plate by taking the center of the limiting plate as a reference, the limiting frames are fixedly connected with the limiting plate through the connecting rods, and the positions of the limiting frames can be limited by the connecting rods. As the preferable technical scheme of the utility model, the limiting frame and the shell are in sliding connection, the limiting pipe is made of metal, the bottom end of the limiting pipe protrudes from the bottom end of the shell, the limiting pipe and the transmission rod are in sliding connection, and the limiting frame can limit the position of the shell. As a preferable technical scheme of the utility model, the driving rod is fixedly connected with the connecting plate, the top end of the hammer is provided with an annular bulge which is embedded with the hook, the hammer is fixedly connected with the driving rod, and the driving rod can drive the connecting plate to move. As the preferable technical scheme of the utility model, the top end of the exciting spring is fixedly connected with the bottom of the hammer, the bottom end of the exciting spring is fixedly connected with the shell, the bottom end of t