KR-102960740-B1 - Schmidt hammer impact point indicator for safety inspection and diagnosis

KR102960740B1KR 102960740 B1KR102960740 B1KR 102960740B1KR-102960740-B1

Abstract

The present invention relates to a Schmidt hammer impact point indicator device for safety inspection and diagnosis, which performs safety inspection and diagnosis by striking a concrete structure with a Schmidt hammer. A Schmidt hammer impact point marking device for safety inspection and diagnosis according to an embodiment of the present invention comprises a hammer clamp on which a Schmidt hammer is installed, a point indicator gripping roller installed on the hammer clamp having a plurality of point indicator protrusions formed around its circumference to indicate the impact point of the Schmidt hammer, a handle usage coupling part that detachably connects the point indicator gripping roller to a first position of the hammer clamp to use the point indicator gripping roller as a handle, and a roller usage coupling part that detachably connects the point indicator gripping roller to a second position of the hammer clamp to indicate the impact point through the point indicator protrusions of the point indicator gripping roller, wherein the point indicator gripping roller comprises a rotation inhibition coupling part that connects and fixes the rotation axis of the point indicator gripping roller to the handle usage coupling part to inhibit rotation of the point indicator gripping roller when the point indicator gripping roller is fixed to the handle usage coupling part, and when the point indicator gripping roller is fixed to the roller usage coupling part, the It includes a rotation-allowing coupling part that fixes the point-marking gripping roller to the roller usage coupling part, while the rotation axis is rotatably supported so that the point-marking gripping roller can mark the striking point by the point-marking projection as it rotates.

Inventors

정은선

Assignees

주식회사 해량엔지니어링종합건축사사무소

Dates

Publication Date: 20260507
Application Date: 20250224

Claims (4)

Hammer clamp on which a Schmidt hammer is installed, A point indicator gripping roller installed on the hammer clamp, having a plurality of point indicator protrusions formed around its circumference to indicate the striking point of the Schmidt hammer, A handle usage coupling part for detachably coupling the point indicator gripping roller at a first position of the hammer clamp to use the point indicator gripping roller as a handle, and It includes a roller coupling part that detachably connects the point indicator gripping roller to a second position of the hammer clamp to indicate the impact point through the point indicator projection of the point indicator gripping roller, and The above point indicator roller is A rotation suppression coupling part extending from the rotation axis and coupled to the handle usage coupling part to suppress rotation of the point indicator gripping roller when the point indicator gripping roller is fixed to the handle usage coupling part, and a rotation suppression coupling part formed integrally with the point indicator gripping roller to combine the rotation axis and the handle usage coupling part. A Schmidt hammer impact point marking device for safety inspection and diagnosis, characterized by including a rotation-allowing coupling part that is rotatably coupled to the rotation axis and coupled to the roller-using coupling part so that when the point indicator gripping roller is fixed to the roller-using coupling part, the point indicator gripping roller can indicate the impact point by the point indicator projection while rotating.
In paragraph 1, It includes a vertical movement guide member that vertically positions the Schmidt hammer at the aforementioned impact point, and The above vertical movement guide member is A striking surface contact portion supported on the surface to be struck by the above-mentioned Schmidt hammer, and It includes a vertical guide portion that protrudes in a direction orthogonal to the striking surface contact portion and guides the movement of the Schmidt hammer, The above hammer clamp is A Schmidt hammer impact point indicator device for safety inspection and diagnosis, characterized by including a guide coupling part in which the vertical movement guide member is slidably coupled in the direction of applying pressure to test the impact of the Schmidt hammer.
In paragraph 2, The above striking surface contact part A Schmidt hammer impact point marking device for safety inspection and diagnosis, characterized by including a grinding member installed on one of the two sides of the impact surface contact portion to grind the impact surface for marking the impact point.
In paragraph 3, The above vertical movement guide member is A contact part detachable part that detachably connects the striking surface contact part to the vertical movement guide member, and A Schmidt hammer impact point indicator for safety inspection and diagnosis, characterized by including a selective mounting portion in which a polishing coupling portion is formed such that the polishing member faces outward at a position different from the position of the roller coupling portion, and the impact surface contact portion separated from the vertical moving guide member is coupled thereto.

Description

Schmidt hammer impact point indicator for safety inspection and diagnosis The present invention relates to a Schmidt hammer impact point indicator device for safety inspection and diagnosis, which performs safety inspection and diagnosis by striking a concrete structure with a Schmidt hammer. Generally, one method for performing safety inspections of concrete structures is the impact test using a Schmidt hammer. The impact test using a Schmidt hammer is a test performed by the rebound force of a spring. When testing with a Schmidt hammer, 20 impact points in a 5x4 (width x height) grid are marked at 3cm intervals, and the durability of the structure is measured by a non-destructive method by calculating the average value of the rebound force at each impact point. In order to test a Schmidt hammer, 20 impact points must be marked at regular intervals, so marking the impact points is not easy. Therefore, a technology for easily marking impact points has been disclosed in Korean Registered Patent Publication No. 10-1658114 (published September 21, 2016) as a "roller-type Schmidt hammer impact point marking mechanism having an impact point marking function." The aforementioned conventional Schmidt hammer impact point marking mechanism comprises: an inner member having bearing members rotatably formed on both sides of a roller-shaped body and an ink container formed in a certain space on the outer surface of the body for storing ink; an outer member having an internal space portion so that the inner member is inserted into the interior of the body and multiple through holes formed vertically and horizontally at regular intervals in the body at positions corresponding to the impact points of the Schmidt hammer; a marking tool member having multiple protruding columns formed on the outer surface of the inner member at positions corresponding to the through holes of the outer member so as to be inserted and installed, and marking multiple impact points on a concrete surface at regular intervals; and a handle member coupled to the bearing members of the inner member to rotate the roller body in which the inner member and the outer member are assembled. This conventional Schmidt hammer impact point marking mechanism is formed in a roller shape, and by forming multiple storage piston-type marking tool members at regular intervals on the roller body, it was possible to accurately mark multiple Schmidt hammer impact points at regular intervals on the concrete surface, thereby facilitating the concrete strength measurement work. However, conventional Schmidt hammer impact point indicators had the problem of being inconvenient to carry because they had to be carried separately from the Schmidt hammer, and were also inefficient as they could only indicate the impact point and could not perform other functions. In addition, conventionally, there was an inconvenience in performing Schmidt hammer tests because a grinding material for grinding the striking surface had to be carried separately, and each task required the use of a separate tool. FIG. 1 is a perspective view illustrating a Schmidt hammer impact point indicator device for safety inspection and diagnosis according to an embodiment of the present invention, and is a state diagram when performing an impact test. FIG. 2 is a cross-sectional view illustrating a Schmidt hammer impact point indicator device for safety inspection and diagnosis according to an embodiment of the present invention, showing a state in which an impact indicator roller is connected to a handle usage coupling part. FIG. 3 is a perspective view showing the separated state of a Schmidt hammer impact point indicator device for safety inspection and diagnosis according to an embodiment of the present invention. FIG. 4 is a side cross-sectional view illustrating a Schmidt hammer impact point marking device for safety inspection and diagnosis according to an embodiment of the present invention, showing a state in which a point marking gripping roller is coupled to a roller usage coupling part. FIG. 5 is a perspective view illustrating a Schmidt hammer impact point indicator device for safety inspection and diagnosis according to an embodiment of the present invention, showing the state when the impact surface is polished. FIG. 6 is a perspective view illustrating a Schmidt hammer impact point display device for safety inspection and diagnosis according to an embodiment of the present invention, and is a state diagram when the impact point is displayed. Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. A Schmidt hammer impact point indicator device (100) for safety inspection and diagnosis according to an embodiment of the present invention can be mounted on a Schmidt hammer (200) to prepare the impact surface to be struck by the Schmidt hammer (200), indicate the impact point (TP), or perform an accurate impact test by pressing the Schmidt ham