1. Tool unit of a rotary swaging machine (1) having a tool space (9) in which there are provided a plurality of shaping swaging tools for processing a workpiece (5) which can be introduced into the tool space (9), and having a front cover (13) by means of which the tool space (9) can be at least partially covered at a tool space side (14), the front cover (13), in order to change shaping swaging tools, being able to be moved into at least one position in which the front cover (13) releases the tool space (9) for removal or insertion of shaping swaging tools at the tool space side (14),
characterised in that
there is provided a front cover locking mechanism (20) which is provided with an actuation device (26) and by means of which the front cover (13) can be locked in a position in which the front cover (13) at least partially covers the tool space (9) at the tool space side (14).
2. Tool unit according to claim 1, characterised in that the actuation device (26) has a drive by means of which the front cover locking mechanism (20) can be driven to lock and unlock the front cover (13).
3. Tool unit according to claim 1, characterised in that the front cover locking mechanism (20) can be manually activated by an operator using the actuation device (26).
4. Tool unit according to claim 1, characterised in that the actuation device (26) of the front cover locking mechanism (20) is secured to the front cover (13).
5. Tool unit according to claim 1, characterised in that the actuation device (26) has a handle (27) which is provided on the front cover (13).
6. Tool unit according to claim 1, characterised in that the front cover locking mechanism (20) has a locking element (21) which is movably supported on the front cover (13) in order to lock and unlock the front cover (13).
7. Tool unit according to any claim 1, characterised in that the front cover locking mechanism (29) has a locking element (21) which is pivotably supported for locking and unlocking the front cover (13), in particular about a pivot axis (6) which extends transversely relative to the tool space side (14).
8. Tool unit according to any claim 1, characterised in that the front cover (13) is supported on a front cover guide (36) so as to be able to be displaced away from the tool space side (14) or towards the tool space side (14), there preferably being provided a drive by means of which the front cover (13) can be driven along the front cover guide (36) during a displacement movement.
9. Tool unit according to claim 1, characterised in that the front cover (13) is pivotably supported with respect to the tool space side (14) by means of a front cover pivot bearing (31), in particular pivotably supported about a pivot axis (32) which extends parallel with the plane of the tool space side (14), there preferably being provided a drive by means of which the front cover (13) can be driven during a pivoting movement about the front cover pivot bearing (31).
10. Tool unit according to claim 1, characterised in that the front cover locking mechanism (20) has a clamping device (53) in order to secure the front cover locking mechanism (20) in a locking position.
11. Tool unit according to claim 1, characterised in that the front cover locking mechanism (20) has at least one pin (22) which is secured to a component (45) which surrounds the tool space (9) in such a manner that the pin (22) protrudes over the front cover (13) with an undercut pin head (24) when the front cover (13) at least partially covers the tool space (9) at the tool space side (14), in that the front cover locking mechanism (20) has a locking plate (21) which is provided with at least one through-opening (23), through which the pin head (24) can protrude, and in that the locking plate (21), in order to lock the front cover (13), can be moved relative to the pin (22) into a locking position in which the locking plate (21) engages behind the pin head (24) which protrudes through the through-opening (23).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
I claim:
1. A ventilation device of a vehicle, which has an engine (10) and a cooling device (12), with which the engine (10) andor additional parts to be cooled are in a heat conducting relationship, while the ventilation device comprises a fan (20) with a fan drive (18), by means of which ambient air is fed to the cooling device (12), and a control system (26) connected to the fan drive (18), which is provided to regulate the feeding rate of the fan (20), characterized in that the control system (26) is arranged to control the fan drive (18) in the most energy-efficient way while making allowance for the amount of ambient air required by the cooling device (12) and the drive power requirements of the fan (20).
2. The ventilation device according to claim 1 wherein the control system (26) makes allowance for the load moment of the fan dependent upon the quantitative feed, the moment of inertia and the moments of loss of the fan (20).
3. The ventilation device according to claim 1 wherein the control system (26) determines the ambient air requirement of the cooling device (12) for a predetermined period of time and adjusts the fan drive (18) to a constant feeding rate of the fan (20) for this period of time.
4. The ventilation device according to claim 1 wherein the control system (26) is connected to sensors (40-50) for the ambient air temperature andor the temperature of a coolant of the cooling device (12) andor the temperature of a hydraulic fluid andor the rotary speed of the engine (10) andor the rotary speed or the feeding rate of the fan (20) andor for a harvesting operational mode of the vehicle.
5. The ventilation device according to claim 1 wherein the control system has a flat logic which generates association functions for one or more input variables of the control system and determines, by way of a regulator, output values, with which the feeding rate of the fan (20) is adjusted.
6. The ventilation device according to claim 1 wherein the feeding rate of the fan (20) is continuously variable.
7. The ventilation device according to claim 1 wherein the fan (20) is driven by a hydraulic drive andor by a CVT transmission of the fan drive (18).