PURPOSE: To facilitate handling of an automatic sensor, to improve controllability and to detect accurately the filling of concrete without making wrong detection by inserting and providing a pressure sensor between a form and a horizontal end thick pipe so that it comes into contact with the outside of the form.
CONSTITUTION: In a device to tamp concrete 2 placed into a form 1 by giving vibration thereto from a vibrator 3, a pressure sensor 4 is held between the outside of the form 1 and a horizontal end thick pipe 6 to firmly fix the pressure sensor 4 so that it is brought into contact with the outside of the form 1, and it is connected to a control section 50 of a body 5. Pushing force is applied outward by placing the concrete 2 to the inside of the form 1, the pressure sensor 4 detects the pushing force caused by displacement of the form 1, so that the filling of the concrete is accurately recognized.
NUNO KUNIMASA
HARIGAYA TORU
OHBAYASHI CORP
| JPS62275706A | 1987-11-30 | |||
| JPS6447481A | 1989-02-21 |