CN215414845U

CN215414845U - Concrete resiliometer testing arrangement of standardization operation

Info

Publication number: CN215414845U
Application number: CN202121863831.3U
Authority: CN
Inventors: 王文东; 徐斌
Original assignee: China Railway First Survey and Design Institute Group Ltd
Current assignee: China Railway First Survey and Design Institute Group Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-01-04
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a concrete resiliometer testing device for standardized operation, which comprises a resiliometer body and a resiliometer auxiliary device, wherein the resiliometer auxiliary device consists of a sleeve, a direction positioning ring and a distance calibration ring. The resiliometer auxiliary device is connected with the resiliometer body through a sleeve, and the lower end of the sleeve is connected with the direction positioning ring through a round table steel plate. The plane of the direction positioning ring is vertical to the axis of the resiliometer body, 4 compressible contact blocks are arranged on the direction positioning ring at equal intervals, and meanwhile, an annular circuit is arranged in the positioning ring and is connected with an indicator lamp on the sleeve in series. The distance calibration ring is directly connected inside the direction positioning ring, and absorbent cotton is wound on the distance calibration ring. This device can observe ambient temperature when detecting the concrete intensity, guarantees to detect the face perpendicular with the concrete, satisfies the requirement of resilience point interval when guaranteeing the multiple spot and detecting. The utility model achieves the purpose of standardized operation and has the advantages of simple structure, convenient operation and high detection precision.

Description

Concrete resiliometer testing arrangement of standardization operation

Technical Field

The utility model relates to the field of concrete detection, in particular to a concrete resiliometer testing device for standardized operation.

Background

The concrete compressive strength is taken as an important index of a reinforced concrete structure, and the importance of the concrete compressive strength is directly related to the safety of the structure. At present, the method for nondestructively detecting the compressive strength of concrete is mainly a rebound method, an instrument adopted by the rebound method is a resiliometer, and the method is widely used due to the simple operation of the resiliometer when the strength of the concrete is tested.

The technical specification for detecting the compressive strength of concrete by a rebound method has clear requirements on the concrete strength detected by the rebound method, wherein three requirements are that in the actual engineering operation, the requirements of the specification cannot be met due to the influence of detection personnel and instruments. The three requirements are respectively as follows: the environmental temperature of the resiliometer during use is (-4-40 ℃); the clear distance between two adjacent measuring points is not smaller than 20 mm; the axis of resiliometer should be perpendicular to concrete detection face all the time when measuring the resilience value, and wherein two preceding requirements often make this problem ubiquitous in the actual engineering because the operation is not standardized to the testing personnel, and the third requirement is difficult to guarantee to satisfy the requirement because the operating error influences to make the accuracy that the resilience method detected the concrete intensity reduce by a wide margin, lead to data unreasonable even because unsatisfied regulation requirement.

Disclosure of Invention

The utility model aims to provide a concrete resiliometer testing device for standardized operation, which solves the three problems of neglecting the ambient temperature, being too close to adjacent measuring points and not vertical to the concrete detection surface of the axis of the resiliometer pointed out in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a concrete resiliometer testing arrangement of standardization operation, includes the resiliometer body, resiliometer body circumference sets up the sleeve that can freely slide, the sleeve lower extreme passes through the round platform steel sheet and links to each other with the direction orientation circle, direction orientation circle plane and resiliometer body axis mutually perpendicular, the inside distance calibration circle that has the identification function that is provided with the coplanar centre of a circle of direction orientation circle, the diameter of distance calibration circle is 20 mm.

The sleeve is provided with a thermometer and an indicator light.

The contact surface of the inner wall of the sleeve and the resiliometer body is provided with a sliding groove.

The direction locating ring is of a circular structure, the size of the direction locating ring is consistent with that of the lower end face of the circular truncated cone steel plate, and 4 compressible contact blocks are arranged on the direction locating ring at equal intervals.

The embedded setting of compressible contact piece is in direction position circle bottom, and it has protrusion and two kinds of states of compression, is respectively: the compressible contact block slightly protrudes out of the plane of the directional locating ring under the action of no external force, and can be compressed to the same plane with the directional locating ring under the action of the external force.

The compressible contact block is connected with the annular circuit and forms a closed circuit with the annular circuit in a compressed state; and the annular circuit is internally connected with an indicator lamp in series.

The distance calibration ring and the direction positioning ring are positioned on the same plane to form a concentric circle relationship, and the circle center is a rebound tester bouncing rod.

And the distance calibration ring is wound with water absorption cotton.

The utility model has the following beneficial effects:

the utility model relates to a concrete resiliometer testing device for standardized operation. The device simple structure, easily operation can solve the neglect ambient temperature that exists when present resilience method test concrete intensity, adjacent measurement station is too near, three big problems of resiliometer axis out of plumb concrete detection face, enable the testing process and satisfy relevant technical regulation requirement, play the purpose of normalized operation, cause the testing result reasonable credible more, improvement detection accuracy that can great degree. Meanwhile, the device is simple in principle and low in cost and manufacturing cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic diagram showing the position relationship between the direction positioning ring and the distance calibration ring of the present invention;

fig. 4 is a diagram of a ring-shaped circuit formed by an indicator light and a compressible contact block.

In the figure: 1. resiliometer body, 2, sleeve, 3, round platform steel sheet, 4, direction position circle, 5, apart from demarcating the circle, 6, compressible contact block, 7, pilot lamp, 8, thermometer, 9, spout.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

The concrete resiliometer testing arrangement of standardization operation of this embodiment, including resiliometer body 1 and resiliometer auxiliary device, resiliometer auxiliary device comprises sleeve 2, direction position circle 4, apart from calibration circle 5.

1 circumference of resiliometer body has set up sleeve 2, has spout 9 on sleeve 2 and the resiliometer contact surface, and resiliometer body 1 can freely slide in spout 9, can realize the resilience operation of resiliometer when testing concrete intensity.

The sleeve 2 is of a steel structure, is high in rigidity and not easy to deform, and the thermometer 8 and the indicator light 7 are embedded in the sleeve 2. The lower end of the sleeve 2 is connected with a circular truncated cone steel plate 3, the circular truncated cone steel plate 3 has the characteristics of high rigidity and difficult deformation, and the main purpose of the circular truncated cone steel plate is to connect a direction positioning ring 4 and a distance calibration ring 5.

The direction locating ring 4 is made of steel, has the characteristics of high rigidity and difficult deformation, has the size consistent with that of the lower opening of the circular truncated cone steel plate 3, is circular in shape, and is provided with 4 compressible contact blocks 6 at equal intervals. The plane of the direction positioning ring 4 is vertical to the axis of the resiliometer body 1, so that the purpose of direction positioning is achieved. The purpose of the compressible contact block 6 is to ensure that the orientation ring 4 is in close contact with the test surface and to confirm whether the series indicator light 7 is on or not, with obvious judgment criteria.

The distance calibration ring 5 is connected with the direction positioning ring 4, and the distance calibration ring and the direction positioning ring are positioned on the same plane and mutually form a concentric circle relationship. The distance calibration ring 5 is made of steel materials, has the characteristics of high rigidity and difficult deformation, is a circular ring with the diameter of 20mm, and is wound with absorbent cotton. The distance calibration ring 5 is functionally realized by extruding absorbent cotton on a test surface, leaving black marks such as ink and the like to determine the position, and is used for judging whether the distance between adjacent points meets the regulation requirement when the multiple points rebound, and if the marks left by the distance calibration ring 5 are mutually overlapped, the unqualified result is represented.

The thermometer 8 is used for observing the environmental temperature and judging whether the environmental temperature is in the range of-4 to 40 ℃; the purpose of the indicator light 7 is to judge whether the compressible contact block 6 is in a compressed state, so as to ensure whether the direction locating ring 4 is tightly attached to the concrete test surface and keep the axis of the resiliometer body 1 vertical to the test surface. Wherein, the power supply, the indicator light 7 and the switch controlled by the 4 compressible contact blocks 6 are connected in series in turn to form a ring circuit. The compressible contact block 6 has two states, compressed and protruding, corresponding to a compressible switch, connected in series on a circular circuit and in parallel with an indicator light 7. And the indicator light 7 is lighted to be green to indicate that the resiliometer is vertical to the test surface.

The using method of the testing device specifically comprises the following steps:

(1) preparation before measurement: before testing, the resiliometer is checked and tested to meet the relevant technical requirements. And under the condition that the resiliometer reaches the standard, observing the environmental temperature at the position of the test surface through a thermometer of the sleeve, judging whether the environmental temperature is in the range of-4-40 ℃, if not, stopping the test, and performing the test when the environmental temperature is in the range of-4-40 ℃. And finishing preparation before measurement after each index reaches the standard.

(2) Cleaning a test surface: and selecting a proper detection surface according to the detection requirement, and adsorbing ink or water and the like on the water absorption cotton away from the calibration ring after removing dirt, dust and the like on the surface of the concrete test.

(3) Testing the rebound value: firstly, an isoplanar of a direction positioning ring of the auxiliary device is placed on a test surface, the sleeve is held by a hand to forcibly extrude the device to the test surface so that the indicator lamp is lightened to be green, and then the resiliometer body is pushed by the hand to slide in the sliding groove until the rebound test is completed and the rebound value is recorded.

(4) Distance judgment: repeating the steps to finish next point rebound, at the moment, leaving a mark with a distance calibration circle on the test surface, judging whether the mark circles are overlapped, if not, continuing the next point rebound, thereby finishing the test of 16 rebound points in one test area.

Claims

1. The utility model provides a concrete resiliometer testing arrangement of standardization operation, includes the resiliometer body, its characterized in that:

resiliometer body (1) circumference sets up sleeve (2) that can freely slide, the sleeve lower extreme passes through round platform steel sheet (3) and links to each other with direction position circle (4), direction position circle (4) plane and resiliometer body axis mutually perpendicular, the inside range calibration circle (5) that have the identification function that are provided with the coplanar centre of a circle of direction position circle, the diameter of range calibration circle (5) is 20 mm.

2. The concrete rebound tester for standardized work according to claim 1, wherein: the sleeve is provided with a thermometer (8) and an indicator light (7).

3. A concrete rebound testing device for standardized work according to claim 1 or 2, wherein: and a sliding groove (9) is formed in the contact surface of the inner wall of the sleeve and the resiliometer body.

4. A concrete rebound tester as set forth in claim 3, wherein: the direction locating ring is of a circular structure, the size of the direction locating ring is consistent with that of the lower end face of the circular truncated cone steel plate, and 4 compressible contact blocks (6) are arranged on the direction locating ring at equal intervals.

5. A concrete rebound tester as set forth in claim 4, wherein: compressible contact piece (6) are embedded to be set up in direction position circle bottom, and it has protrusion and two kinds of states of compression, is respectively: the compressible contact block slightly protrudes out of the plane of the directional locating ring under the action of no external force, and can be compressed to the same plane with the directional locating ring under the action of the external force.

6. A concrete rebound tester as set forth in claim 5, wherein: the compressible contact block (6) is connected with the annular circuit and forms a closed circuit with the annular circuit in a compressed state; and an indicator lamp (7) is connected in series in the annular circuit.

7. The concrete rebound tester for standardized work according to claim 1, wherein: the distance calibration ring and the direction positioning ring are positioned on the same plane to form a concentric circle relationship, and the circle center is a rebound tester bouncing rod.

8. The concrete rebound tester for standardized work according to claim 1, wherein: and the distance calibration ring is wound with water absorption cotton.