阅读说明：本技术 一种用于混凝土回弹试验的测试点定位装置 (A test point positioner for concrete resilience is experimental ) 是由 钱若霖 苏佩 王扶义 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种用于混凝土回弹试验的测试点定位装置,包括矩形的固定板,固定板上均匀设置有4行×4列垂直于固定板下表面的印头组件,印头组件用于向待测试混凝土结构物上标记测试位置。每个印头组件包含套管、活动销和盖板,活动销设置于套管内,套管的尾部设置盖板,活动销和盖板之间设置有压缩弹簧,销头设置有轴向的通孔,通孔内设置有笔头。本发明技术方案相对于现有技术而言,具有以下有益效果：1、一次性可精确标记出16个测试点位置；2、设置有储墨芯,使用中减少耽误,省时高效；3、设置有扇形量角仪,可直接获取非竖直墙体与水平面夹角；4、可伸缩式刻度尺可以保证不同测区之间距离,使测区距离结构物边缘距离均符合规范要求。(The invention discloses a test point positioning device for a concrete rebound test, which comprises a rectangular fixing plate, wherein 4 rows of printing head components which are multiplied by 4 columns and vertical to the lower surface of the fixing plate are uniformly arranged on the fixing plate, and the printing head components are used for marking a test position on a concrete structure to be tested. Every printer head subassembly contains sleeve pipe, removable pin and apron, and the removable pin sets up in the sleeve pipe, and the sheathed tube afterbody sets up the apron, is provided with compression spring between removable pin and the apron, and the round pin head is provided with axial through-hole, is provided with the nib in the through-hole. Compared with the prior art, the technical scheme of the invention has the following beneficial effects: 1. 16 test point positions can be accurately marked at one time; 2. the ink storage core is arranged, so that delay is reduced in use, and time and efficiency are saved; 3. the fan-shaped angulometer is arranged, so that the included angle between the non-vertical wall and the horizontal plane can be directly obtained; 4. the distance between different survey districts can be guaranteed to the retractable scale, makes survey district apart from the structure edge distance all accord with the standard requirement.)

1. The utility model provides a test point positioner for concrete rebound is experimental, its characterized in that, includes fixed plate (1) of rectangle, evenly be provided with 4 lines 4 and a row perpendicular to fixed plate (1) lower surface's printer head subassembly on fixed plate (1), printer head subassembly is used for marking the test position on to await measuring concrete structure thing (13).

2. The test point positioning device for the concrete rebound test according to claim 1, wherein each print head assembly comprises a sleeve (2), a movable pin (3) and a cover plate (4), the lower end of the sleeve (2) is provided with an inward extending inner flange, the upper end of the movable pin (3) is provided with an outward extending outer flange, the outer diameter of the outer flange is smaller than the inner diameter of the sleeve (2), the movable pin (3) is arranged in the sleeve (2), the tail part of the sleeve (2) is provided with the cover plate (4), a compression spring (5) is arranged between the movable pin (3) and the cover plate (4), the outer wall of the sleeve (2) is provided with an external thread, the head of the pin is provided with an axial through hole, and a pen point (6) is arranged in the through hole; the fixing plate (1) is provided with a screw hole corresponding to the external thread of each sleeve (2); each printing head component is screwed into the screw hole of the fixing plate (1) through the external thread of the sleeve (2).

3. The test point positioning device for the concrete rebound test as set forth in claim 2, wherein an ink storage core (7) is disposed in the compression spring (5), and ink is stored in the ink storage core (7).

4. The test point positioning device for the concrete rebound test as set forth in claim 3, wherein the ink storage core (7) is made of fiber, and the pen point (6) is made of fiber.

5. Test point positioning device for concrete rebound tests according to claim 1, characterized in that the upper surface of the fixed plate (1) is provided with a hand grip (8).

6. The test point positioning device for the concrete rebound test is characterized in that a fan-shaped angle measuring instrument (9) perpendicular to the upper surface of the fixing plate (1) is arranged on the upper surface of the fixing plate (1), a level fixing plate (10) is further hinged to the upper surface of the fixing plate (1), a level is arranged on the level fixing plate (10), and the circle center of the fan-shaped angle measuring instrument (9) is located on the rotation axis of the level fixing plate (10).

7. The test point positioning device for concrete rebound test as set forth in claim 6, characterized in that the zero scale value of the sector goniometer (9) is located at the middle position of the sector goniometer (9).

8. The test point positioning device for the concrete rebound test as set forth in claim 1, wherein scales (11) are respectively provided on four side surfaces of the fixed plate (1), and each scale (11) is hinge-jointed to each side surface of the fixed plate (1) in a foldable manner.

9. Test point positioning device for concrete rebound tests according to claim 8, characterized in that the scale (11) is a retractable scale (11).

10. The test point positioning device for the concrete rebound test according to claim 1, characterized in that the upper surface of the fixed plate (1) is divided into 4 rows by 4 columns of square blocks (12), and each square block (12) is used for recording the rebound value of the test point in the square block (12).

Technical Field

The invention relates to the technical field of concrete detection, in particular to a test point positioning device for a concrete rebound test.

Background

At present, most civil engineering structures still adopt concrete materials, and whether the civil engineering structures are newly built or concrete engineering structures serving for a certain period of time, the strength value of the concrete structures can be detected when the civil engineering structures are delivered as they are or reach the specified detection time. The most common detection method at present is rebound. And measuring the concrete rebound value of different measuring areas of a certain member by using a rebound tester, estimating the strength, and further judging whether the concrete quality of the structure reaches the standard. In the test process, the selection and the division of the concrete measuring area are particularly important, the current specification stipulates that the selection distance of the same member measuring area is not less than 0.2m and not more than 0.5m from the edge of the member, and the distance between the measuring area and the measuring area is controlled within 2 m. In actual operation, an inspector generally uses a steel ruler and chalk to roughly finish the position selection of a measuring area, draws an external grid of 20cmx20cm, and then uses the chalk to draw an internal grid by hands, wherein 4x4 is 16 in total and the side length is 5 cm. The number of the component measuring areas is generally larger than 10, and the method has the following defects: 1. the test points are determined manually, so that the test efficiency is low; 2, manually determining the position of a test point, wherein the error is large; 3. the distance between the measuring areas is measured frequently, and the measuring accuracy is reduced. Various errors are accumulated, so that the accuracy of test data is reduced, and the strength judgment of the concrete structure is influenced.

Therefore, how to design a convenient and easy-to-use concrete resilience value test point positioning device is a technical problem which needs to be solved by the technical personnel in the field at present.

Disclosure of Invention

In order to solve the technical problems, the invention mainly aims to provide a test point positioning device for a concrete rebound test, which can quickly and accurately determine the positions of a plurality of test points at one time.

In order to achieve the above object, the present invention adopts the following technical solutions.

The utility model provides a test point positioner for concrete rebound is experimental, includes the fixed plate of rectangle, evenly is provided with 4 lines 4 and arranges the printer head subassembly of perpendicular to fixed plate lower surface on the fixed plate, and the printer head subassembly is used for marking the test position on the concrete structure thing that awaits measuring.

Furthermore, each printing head assembly comprises a sleeve, a movable pin and a cover plate, wherein an inward extending flange is arranged at the lower end of the sleeve, an outward extending flange is arranged at the upper end of the movable pin, the outer diameter of the outward flange is smaller than the inner diameter of the sleeve, the movable pin is arranged in the sleeve, the cover plate is arranged at the tail part of the sleeve, a compression spring is arranged between the movable pin and the cover plate, external threads are arranged on the outer wall of the sleeve, an axial through hole is formed in the pin head, and a pen point is arranged in the through hole; the fixing plate is provided with a screw hole corresponding to the external thread of each sleeve; each printing head component is screwed into the screw hole of the fixing plate through the external thread of the sleeve.

Furthermore, an ink storage core is arranged in the compression spring, and ink is stored in the ink storage core.

Furthermore, the ink storage core is made of fibers, and the pen point is made of fibers.

Furthermore, a hand-held handle is arranged on the upper surface of the fixing plate.

Furthermore, the upper surface of fixed plate is provided with the fan-shaped angulometer of perpendicular to fixed plate upper surface, and the upper surface of fixed plate still articulates there is the spirit level fixed plate, is provided with the spirit level on the spirit level fixed plate, and the centre of a circle of fan-shaped angulometer is located the rotation axis of spirit level fixed plate.

Further, the zero scale value of the sector protractor is positioned in the middle of the sector protractor.

Furthermore, four sides of the fixed plate are respectively provided with a graduated scale, and each graduated scale is folded and hinged on each side of the fixed plate.

Furthermore, the graduated scale is a telescopic graduated scale.

Furthermore, the upper surface of the fixing plate is divided into 4 rows × 4 columns of square blocks, and each square block is used for recording the rebound value of the test point in the square block.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

1. 16 test point positions can be accurately marked at one time;

2. the ink storage core is arranged, so that delay is reduced in use, and time and efficiency are saved;

3. the fan-shaped angulometer is arranged, so that the included angle between the non-vertical wall and the horizontal plane can be directly obtained;

4. the distance between different survey districts can be guaranteed to the retractable scale, makes survey district apart from the structure edge distance all accord with the standard requirement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a side of a test point positioning device for a concrete rebound test, which is provided with a hand-held handle according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a side of a test point positioning device for a concrete rebound test, which is provided with a print head assembly according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a printhead assembly;

FIG. 4 is an exploded view of the printhead assembly;

FIG. 5 is a schematic view of the use of the test point locating device to print test point locations on a non-vertical test surface.

In the above figures:

1, fixing a plate; 2, sleeving a sleeve; 3, a movable pin; 4, covering a plate; 5 compressing the spring; 6, a pen point; 7 ink storage core; 8, a handle is held by a hand; 9, a sector goniometer; 10 a level gauge fixing plate; 11 a graduated scale; a block area of 12; 13 concrete structure.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

And measuring the concrete rebound value of different measuring areas of a certain member by using a rebound tester, estimating the strength, and further judging whether the concrete quality of the structure reaches the standard. In the test process, the selection and the division of the concrete measuring area are particularly important, the current specification stipulates that the selection distance of the same member measuring area is not less than 0.2m and not more than 0.5m from the edge of the member, and the distance between the measuring area and the measuring area is controlled within 2 m. In actual operation, an inspector generally uses a steel ruler and chalk to roughly finish the position selection of a measuring area, draws an external grid of 20cmx20cm, and then uses the chalk to draw an internal grid by hands, wherein 4x4 is 16 in total and the side length is 5 cm. The number of the component measuring areas is generally larger than 10, and the method has the following defects: 1. the test points are determined manually, so that the test efficiency is low; 2, manually determining the position of a test point, wherein the error is large; 3. the distance between the measuring areas is measured frequently, and the measuring accuracy is reduced. Various errors are accumulated, so that the accuracy of test data is reduced, and the strength judgment of the concrete structure is influenced.

Referring to fig. 1 and 2, the present invention provides a test point positioning device for a concrete rebound test, including a rectangular fixing plate 1, wherein 4 rows and 4 columns of print head assemblies perpendicular to a lower surface of the fixing plate 1 are uniformly arranged on the fixing plate 1, and the print head assemblies are used for marking a test position on a concrete structure 13 to be tested.

Further, referring to fig. 3 and 4, each print head assembly includes a sleeve 2, a movable pin 3, and a cover plate 4, an inward extending inner flange is disposed at a lower end of the sleeve 2, an outward extending outer flange is disposed at an upper end of the movable pin 3, an outer diameter of the outer flange is smaller than an inner diameter of the sleeve 2, the movable pin 3 is disposed in the sleeve 2, the cover plate 4 is disposed at a tail portion of the sleeve 2, a compression spring 5 is disposed between the movable pin 3 and the cover plate 4, an outer wall of the sleeve 2 is provided with an external thread, the pin head is provided with an axial through hole, and a pen head 6 is disposed in the through hole; the fixing plate 1 is provided with a screw hole corresponding to the external thread of each sleeve 2; each printing head component is screwed into the screw hole of the fixing plate 1 through the external thread of the sleeve 2.

In the above embodiment, the print head assembly is embodied as the retractable movable pin 3, and the compression spring 5 is disposed between the movable pin 3 and the cover plate 4. Because the surface of the concrete structure 13 to be tested is rough and uneven, if the length of the printing head component can not be adjusted, the mark can not be printed on the sunken part, in the embodiment, the compression spring 5 is arranged between the movable pin 3 and the cover plate 4, when in use, the compression spring applies pressure to the fixed plate 1, and each printing head component can adaptively adjust the length of the extending sleeve 2, so that each test point is marked. When the test device is used, the fixing plate 1 with the printing head components is taken up to dip ink in the ink box, then the fixing plate is pressed towards the surface of the concrete structure 13 to be tested, each printing head component is ensured to be in contact with the surface of the concrete structure 13 to be tested, and 4 rows of test positions with 4 columns of marks are left on the surface of the concrete structure 13 to be tested.

Further, an ink storage core 7 is arranged in the compression spring 5, and ink is stored in the ink storage core 7. The ink storage core 7 is made of fibers, and the pen point 6 is made of fibers.

Further, a handle 8 is provided on the upper surface of the fixing plate 1.

The concrete structure rebound test often has a plurality of test areas, and the ink of the pen point 6 is used up quickly, so that the individual test points are not marked clearly or are not marked. In the above embodiment, in order to prolong the duration of the device and reduce the number of times of adding ink during the detection, the sleeve 2 is provided with the ink storage core 7, and the diameter of the ink storage core 7 is smaller than the inner diameter of the compression spring 5. Before the test device is used, the cover plate 4 is opened, the ink storage core 7 is replaced or ink is added into the ink storage core 7, so that the test time prolonging caused by ink shortage in the test process can be obviously reduced.

Further, the upper surface of fixed plate 1 is provided with fan-shaped angulometer 9 of the 1 upper surface of perpendicular to fixed plate, the upper surface of fixed plate 1 still articulates there is spirit level fixed plate 10, be provided with the spirit level on the spirit level fixed plate 10, the bubble spirit level can be chooseed for use to the spirit level, the centre of a circle of fan-shaped angulometer 9 is located on the rotation axis of spirit level fixed plate 10.

Further, the zero scale value of the sector goniometer 9 is located at the middle position of the sector goniometer 9.

In the test process, when a non-vertical concrete wall is often encountered, that is, an included angle is formed between the test surface of the concrete structure 13 to be tested and the horizontal plane, the included angle between the test surface and the horizontal plane needs to be recorded when the rebound value is calculated, so that the data is subjected to non-horizontal direction rebound value angle correction in the later period. In the prior art, the angle of the instrument is roughly estimated by visual measurement or a simple angle measuring instrument, the process is complicated, the measured angle result data is not accurate, and further, errors are generated during non-horizontal direction angle correction during subsequent data processing. Referring to fig. 5, in the present embodiment, a fan-shaped protractor 9 is disposed on a fixing plate 1, during testing, the fixing plate 1 is pressed perpendicular to a testing surface of a concrete structure 13 to be tested, and then a level fixing plate 10 is adjusted to be horizontal according to whether a leveling bubble of the level is in the middle, at this time, a reading of a free end of the level fixing plate 10 on the fan-shaped protractor 9 is an included angle between a pen point 6 and the horizontal plane. The angle value can be directly and accurately obtained.

Furthermore, four side surfaces of the fixing plate 1 are respectively provided with a graduated scale 11, and each graduated scale 11 is hinged on each side surface of the fixing plate 1 in a foldable manner. The graduated scale 11 is a telescopic graduated scale 11.

As the technical regulation of the rebound method for detecting the compressive strength of the concrete is stipulated, for a common member, the number of the measuring areas is not less than 10, the distance between two adjacent measuring areas is controlled within 2m, and the distance between the measuring area and the edge of the member is not more than 0.5m and not less than 0.2 m. In the prior art, after one measuring area is determined, a measuring tape is used for measuring the spacing distance, and then the next measuring area is determined. In order to facilitate the determination of the measuring area, the four sides of the fixing plate 1 are respectively provided with a retractable scale 11, and each retractable scale 11 is foldably hinged on the side of the fixing plate 1. After the spacing distance between adjacent measuring areas is determined, the four telescopic graduated scales 11 are adjusted to the length equal to the spacing distance and rotated to be perpendicular to the side surface, and then the position of the next measuring area can be directly determined.

Further, the upper surface of the fixing plate 1 is divided into 4 rows × 4 columns of square blocks 12, and each square block 12 is used for recording the springback value of the test point in the square block 12.

Because each test area needs to record the rebound value of a point, and each test is constructed with a plurality of test areas, the test data is very large, and in order to prevent the data from being disordered, the data of each test area needs to be gathered in a test table. Dividing 4 rows by 4 columns of square block areas 12 on the upper surface of the fixing plate 1, recording the rebound value of the current test area test point in each square block area 12, taking a picture after the rebound value of 16 points is recorded, and making a test area mark for the picture, such as the rebound value of the first test area. And after the record of the rebound value of the test area is finished, completely erasing the test area, and testing and recording the rebound value of the second test area.

Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention as claimed.