SU126676A1 - Device for measuring the speed of falling parts of a hammer - Google Patents

Description

The known devices for measuring the speed of moving parts of machines, including the falling parts of the hammer, made in a rotating drum and a swing arm with a pencil, have a complex structure and are poorly adapted for use under production conditions.

The described device for measuring the speed of the falling parts of the hammer is structurally simpler and can be used under production conditions.

A distinctive feature of this device is the use of two two-arm corner levers-sensors, which sit on the same axis, with their ends set free from pencils, at a certain distance from each other on the movement of the falling parts.

The drawing schematically shows the described device in a general form.

The device is made in the form of a rotating drum / glued with: - paper on its surface and two corner levers 2 and 3 sitting on the same axis 4. At one end of the levers, springs (not shown) are pressed to the surface 6apa6ai; a pencils 5, and the other ends of the levers are brought under the falling-part 6 of the hammer (not shown) and are vertically spaced apart at a predetermined distance b. The drum receives rotation from the electric motor 7 through the clutch §.

At the time when the electric motor was turned on and the drum began to rotate, both Pencils left traces in the form of a straight line pattern on the surface of the drum covered with paper. As soon as the falling part 6 reaches the end of the lever 2 and begins to move it, it is set; -} The 1st pencil on it will cut off the surface of the drum. The pencil of the second lever 3 in contact with the falling part will make the cut-off later. The delay of the second cut-off is equal to the time during which the falling part passes the head b.

If denoted by Z3 diameter of the drum (in mm). - distance

(in mm) between the cutoffs on the drum, the p-number of revolutions in minutes, and the b-distance (in -u.u) between the ends of the levers, then the speed 1 of the falling part can be calculated by the following formula:

.. 1 3, l4-D-n-6

and - g 7G-G7-.m: s

 Subject matter of i-r and

A device for measuring the speed of the falling parts of the hammer, made in the form of a rotating drum and a rotary lever with a pencil, characterized in that, in order to be able to operate 3 production conditions and to obtain a sufficient degree of measurement accuracy, two two shoulder shafts are used on the same axis angular lever-sensors with the installation of their ends, free from pencils, at a certain distance from each other in the path of the falling parts.