CN220289471U

CN220289471U - Concrete resistivity meter

Info

Publication number: CN220289471U
Application number: CN202321375609.8U
Authority: CN
Inventors: 黄浩; 毛备; 姚军; 李振辉; 蔡瀚
Original assignee: Kunshan Transportation Engineering Test Center Co ltd
Current assignee: Kunshan Transportation Engineering Test Center Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2024-01-02
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a concrete resistivity instrument, which comprises a supporting base, wherein a lifting box is fixedly arranged at the top end of the supporting base, a threaded rod is rotatably arranged between the inner top end and the inner bottom end of the lifting box, a screw nut is sleeved on the threaded rod, the screw nut is fixedly connected with a lifting transverse plate, an insulating plate is fixedly arranged at the bottom end of the lifting transverse plate, and a plurality of fixed probes are fixedly arranged at the bottom end of the insulating plate. According to the utility model, the threaded rod and the screw nut are arranged, so that the lifting transverse plate is driven to move up and down when the rotating motor rotates, the detection copper column is driven to move up and down, the position of the detection copper column can be adjusted according to concrete with different heights, and the detection copper column is arranged, so that the sponge immersed with water is plugged into the clamping groove when in use, the bottom end of the detection copper column is contacted with the concrete to be detected, and the detection copper column is tightly contacted with the concrete to be detected under the action force of the telescopic spring.

Description

Concrete resistivity meter

Technical Field

The utility model relates to the field of building engineering detection, in particular to a concrete resistivity meter.

Background

The corrosion of the steel bar in the concrete is a phenomenon caused by an electrochemical action, which generates an electric current to corrode the steel bar, so that whether the steel bar is corroded can be inferred by testing the resistivity of the concrete. The resistivity is a very important parameter for the reinforced concrete building material, is easy to obtain by a simple test means, can directly reflect the corrosion condition of the reinforced concrete, can well establish connection with other properties of the concrete, and is an important basis for reflecting the quality condition of the concrete. The method for measuring the concrete resistivity by the instrument is simple, quick and easy to operate, and is expected to become a new concrete nondestructive testing technology and be applied to concrete engineering. Therefore, the scientific and accurate detection means not only has important significance for determining the resistivity and the internal corrosion condition, but also can accumulate experience for reinforced concrete engineering, building construction and materials, and has important significance in the aspects of building engineering and safety.

The current common concrete resistivity tester is characterized in that a probe part of the four-probe resistivity tester consists of a sensor, and sponge is required to be soaked and then is plugged into a sensor hole for use. However, when the existing concrete resistivity tester is used for testing, the probe needs to be held manually by a person, so that the displayed indication frequently jumps due to detection, and the accuracy is not high enough.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a concrete resistivity meter.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a concrete resistivity appearance, includes the support base, support base top fixed mounting has the lift case, rotate between top and the interior bottom in the lift case and install the threaded rod, the thread bush is equipped with screw nut on the threaded rod, screw nut fixedly connected with goes up and down the diaphragm, it has the insulation board to go up and down diaphragm bottom fixed mounting, a plurality of fixed probes have to insulate plate bottom fixed mounting.

Preferably, the fixed probe comprises a fixed cavity fixedly arranged at the bottom end of the insulating plate, a movable plate is movably arranged in the fixed cavity, and the top end of the movable plate is elastically connected with a telescopic spring with the bottom end of the insulating plate.

Preferably, the detection copper column is fixedly arranged at the other end of the movable plate, a clamping groove is formed in the bottom end of the detection copper column, and the detection copper column penetrates through the bottom end of the fixed cavity in a sliding mode.

Preferably, a pair of limit rods are fixedly installed in the lifting box, the limit rods are arranged on two sides of the threaded rod, the lead screw nut is sleeved on the limit rods in a sliding mode, a rotating motor is fixedly installed at the top end of the lifting box, and an output shaft of the rotating motor is fixedly connected with the threaded rod in a coaxial mode.

Preferably, the control host is fixedly arranged at the top end of the support base, the rechargeable battery is fixedly arranged at the top end of the support base, the control host is electrically connected with the rotating motor, the fixed probe and the rechargeable battery, and the rechargeable battery supplies power for the electric instrument in the device.

Preferably, a plurality of universal wheels are fixedly arranged at the bottom end of the supporting base.

The utility model has the following beneficial effects:

1. the threaded rod and the screw nut are arranged, so that the lifting transverse plate is driven to move up and down when the rotating motor rotates, the detection copper column is driven to move up and down, and the position of the detection copper column can be adjusted according to concrete with different heights;

2. through setting up and detecting the copper post, will soak the sponge stopper of water in the draw-in groove during the use for detect copper post bottom and wait to detect concrete contact, make under the effort of extension spring detect copper post and wait to detect concrete close contact.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a concrete resistivity meter according to the present utility model;

FIG. 2 is a schematic view of the external structure of a concrete resistivity meter according to the present utility model;

FIG. 3 is a schematic view of the structure of the fixed probe of the present utility model.

In the figure: 1. a support base; 2. a lifting box; 3. a threaded rod; 4. a limit rod; 5. a rotating motor; 6. a lead screw nut; 7. lifting the transverse plate; 8. an insulating plate; 9. fixing the probe; 901. a fixed cavity; 902. a movable plate; 903. a telescopic spring; 904. detecting a copper column; 905. a clamping groove; 10. a control host; 11. a rechargeable battery; 12. and a universal wheel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, a concrete resistivity meter comprises a supporting base 1, wherein a lifting box 2 is fixedly installed at the top end of the supporting base 1, a threaded rod 3 is rotatably installed between the top end and the inner bottom end in the lifting box 2, a screw nut 6 is sleeved on the threaded rod 3, a lifting transverse plate 7 is fixedly connected with the screw nut 6, an insulating plate 8 is fixedly installed at the bottom end of the lifting transverse plate 7, and a plurality of fixed probes 9 are fixedly installed at the bottom end of the insulating plate 8.

The fixed probe 9 comprises a fixed cavity 901 fixedly arranged at the bottom end of the insulating plate 8, a movable plate 902 is movably arranged in the fixed cavity 901, and the top end of the movable plate 902 and the bottom end of the insulating plate 8 are elastically connected with an expansion spring 903.

The other end of the movable plate 902 is fixedly provided with a detection copper column 904, a clamping groove 905 is formed in the bottom end of the detection copper column 904, and the detection copper column 904 penetrates through the bottom end of the fixed cavity 901 in a sliding mode.

A pair of stop levers 4 are fixedly installed in the lifting box 2, the stop levers 4 are arranged on two sides of the threaded rod 3, a screw nut 6 is slidably sleeved on the stop levers 4, a rotating motor 5 is fixedly installed at the top end of the lifting box 2, and an output shaft of the rotating motor 5 is fixedly connected with the threaded rod 3 coaxially.

The top end of the supporting base 1 is fixedly provided with a control host 10, the top end of the supporting base 1 is fixedly provided with a rechargeable battery 11, the control host 10 is electrically connected with the rotating motor 5, the fixed probe 9 and the rechargeable battery 11, and the rechargeable battery 11 supplies power for an electric instrument in the device.

The support base 1 bottom fixed mounting has a plurality of universal wheels 12, is provided with callipers on the universal wheel 12, takes place to remove when avoiding using.

It should be noted that, the electronic control technology and the caliper structure of the control host 10 are all existing mature technologies, and are not key technical points of the present utility model, and will not be described herein.

In the utility model, after the device is pushed to a proper position, the universal wheel 12 is locked and fixed through the calipers, the rotating motor 5 is controlled through the control host 10, the threaded rod 3 is rotated, the screw nut 6 is further moved up and down, the fixed probe 9 is driven to move up and down, the sponge is stuffed into the clamping groove 905 on the detection copper column 904 after being wetted, the lifting transverse plate 7 is adjusted, the bottom end of the detection copper column 904 is tightly attached to the concrete to be detected under the reaction force of the telescopic spring 903, and the data generated by detection can be displayed on the control host 10.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a concrete resistivity appearance, includes support base (1), its characterized in that, support base (1) top fixed mounting has lift case (2), rotate between top and the interior bottom in lift case (2) and install threaded rod (3), threaded rod (3) go up the thread bush and be equipped with screw nut (6), screw nut (6) fixedly connected with goes up and down diaphragm (7), go up and down diaphragm (7) bottom fixed mounting has insulation board (8), insulation board (8) bottom fixed mounting has a plurality of fixed probes (9).

2. A concrete resistivity apparatus as claimed in claim 1, characterized in that the fixed probe (9) comprises a fixed cavity (901) fixedly arranged at the bottom end of the insulating plate (8), a movable plate (902) is movably arranged in the fixed cavity (901), and a telescopic spring (903) is elastically connected with the top end of the movable plate (902) and the bottom end of the insulating plate (8).

3. The concrete resistivity apparatus as claimed in claim 2, wherein a detection copper column (904) is fixed at the other end of the movable plate (902), a clamping groove (905) is formed at the bottom end of the detection copper column (904), and the detection copper column (904) slides through the bottom end of the fixed cavity (901).

4. The concrete resistivity apparatus as claimed in claim 1, wherein a pair of limit rods (4) are fixedly installed in the lifting box (2), the pair of limit rods (4) are arranged on two sides of the threaded rod (3), the screw nut (6) is slidably sleeved on the limit rods (4), a rotating motor (5) is fixedly installed at the top end of the lifting box (2), and an output shaft of the rotating motor (5) is fixedly connected with the threaded rod (3) in a coaxial manner.

5. The concrete resistivity apparatus as claimed in claim 1, wherein a control host (10) is fixedly mounted at the top end of the supporting base (1), a rechargeable battery (11) is fixedly mounted at the top end of the supporting base (1), the control host (10) is electrically connected with the rotating motor (5), the fixed probe (9) and the rechargeable battery (11), and the rechargeable battery (11) supplies power to the electric instrument in the apparatus.

6. A concrete resistivity meter as claimed in claim 1, characterized in that the bottom end of the support base (1) is fixedly provided with a plurality of universal wheels (12).