Vibration device with self-adjusting impact bars

13:

• A vibration device with a vibrating table, for a concrete block manufacturing machine for compression of a material to be compressed, wherein the vibration device is at least partially resiliently mounted on a machine frame and driven by at least one electric motor and as a result the vibrating table can be set in a predominantly vertical vibrating movement, wherein the vibration device has a plurality of vibrating table bars arranged parallel to one another and fastened to the vibrating table and impact bars fastened statically to the machine frame, wherein all the impact bars are displaceable relative to the vibrating table bars and along a displacement axis running parallel to the vertical vibrating movement by a plurality of positioning devices connected to one another and driven by at least one common drive unit in order to obtain a displacement of all the impact bars.

14:

• The vibration device according to claim 13, wherein the vibration device is adjustable in such a way that in a standby state the impact bars are arranged below the vibrating table bars or span a common plane.

15:

• The vibration device according to claim 14, wherein all of the impact bars have a wear bar connected to a support bar, and the support bar is connected by at least one fastening device to at least one positioning mechanism.

16:

• The vibration device according to claim 15, wherein the positioning mechanism has an upper wedge element and a lower wedge element connected to a shaft, wherein the lower wedge element is displaceable along an axis extending parallel to the impact bars by the rotation of the shaft, and as a result the upper wedge element is adjustable along the displacement axis, the upper wedge element sliding on the underside along an oblique upper surface of the lower wedge element.

17:

• The vibration device according to claim 16, wherein the upper wedge is connected to a fastening element of the fastening device in order to displace the impact bars along the displacement axis.

18:

• The vibration device according to claim 15, wherein the positioning mechanism has a worm gear and a worm shaft, wherein the fastening device connected to the worm gear is adjustable along the displacement axis by the rotation of the worm shaft, the worm gear being meshed on the front face with the worm shaft.

19:

• The vibration device according to claim 15, wherein the positioning mechanism has a spur gear meshed with a spur gear shaft and connected to the fastening device, wherein the fastening device is adjustable along the displacement axis by the rotation of the spur gear shaft.

20:

• The vibration device according to claim 15, wherein the positioning device has a torque transmission device which indirectly connects the positioning mechanisms to the drive unit in a retaining device arranged alongside and/or below the vibrating table.

21:

• The vibration device according to claim 20, wherein the torque transmission device has a cardan shaft which is configured for transmission of a torque to the positioning devices.

22:

• The vibration device according to claim 20, wherein the torque transmission device has a cardan shaft which is configured for transmission of a torque to the positioning devices.

23:

• The vibration device according to claim 20, wherein the positioning device has an angular gear which transmits the torque predetermined by the drive unit to the positioning mechanism by an angle, the angular gear being connected to the torque transmission device.

24:

• The vibration device according to claim 21, wherein the positioning device has an angular gear which transmits the torque predetermined by the drive unit to the positioning mechanism by an angle, the angular gear being connected to the torque transmission device.

25:

• A concrete block manufacturing machine for compression of a material to be compressed, wherein the concrete block manufacturing device has a vibration device with a vibrating table, wherein the vibration device is at least partially resiliently mounted on a machine frame and driven by at least one electric motor and as a result the vibrating table can be set in a predominantly vertical vibrating movement, wherein the vibrating device has a plurality of vibrating table bars arranged parallel to one another and fastened to the vibration table and impact bars fastened statically to the machine frame, wherein all the impact bars are displaceable relative to the vibrating table bars and along a displacement axis running parallel to the vertical vibrating movement by a plurality of positioning devices connected to one another and driven by at least one common drive unit.