Such an apparats is known from WO 97/15900. which document describes a milking robot for performing i. a. automatic attachment of teatcups onto the teats of an animal. However, the therein described apparats needs regular maintenance.

OBJECT OF THE INVENTION It is an object of the invention to provide an improved apparats, which needs less maintenance.

SUMMARY OF THE INVENTION This object has been achieved by the apparats of the initially defined kind, which is characterised in that a registering means is provided for registering a cumulative running value, said control means being adapted to generate a signal when a prede- termine threshold value has been reached.

In particular, said registering means is adapted to register the running value of said at least one animal related device.

Alternatively, or additionally said registering means is adapted to register the run- ning value of a driving means of said robot.

Preferably, said running value is the running time of a complete animal related op- ration.

Hereby, it is established by the control means when maintenance is needed regard- ing the whole apparats.

Suitably, said predetermined threshold value is set for each of said at least one ani- mal related device, said robot and said complete animal related operation. Hereby, it is possible in advance to set a running value outgoing e. g. from wear or health re- quirements.

Preferably, said animal related device comprises milking equipment having a teat- cup provided with a shell and a liner forming an intermediate space, said space be- ing connectible to a source of vacuum via a pulsator for creating a pulsating vac- uum, said pulsator being associated with said control means, said control means being adapted to register the cumulative running value of said pulsator.

In particular, said running value is running time of said pulsator. Alternatively, or additionally, said running value is a number of pulsations generated by said pulsa- tor. Hereby, it is possible to establish when the liner needs to be exchanged.

Suitably, said animal related device comprises a teat location device, said running value being running time thereof. Hereby, it is possible to establish when the teat location device needs adjustment.

Preferably, said animal related device comprises a teat clearing device, said running value being rurming time thereof. Hereby, it is possible to establish when the teat cleaning device needs thorough cleaning.

Suitably, said apparats further comprises a gate means for restricting movement of an animal from an animal space, said gate means being opened and closed by means of a driving means, said running value being said running time of said driving means. Hereby, it is possible to establish when the gate means needs to be service.

DRAWING SUMMARY In the following, the invention will be described in more detail with reference to the accompanying drawings, in which Figure 1 is a top view of the apparats according to the invention, Figure 2 is a schematic view of components of the apparats shown in figure 1 Figure 3 is a schematic view of further components of the apparats.

DETAILED DESCRIPTION Figure 1 shows an apparats 1 for performing an animal related operation compris- ing an animal space 4. A robot 6 is provided with a robot arm 8, which is movable into the animal space 4. The robot arm is, in turn, provided with a gripper 10 for gripping an animal related apparats, in the figure shown as a teatcup 12a, and an image capturing device 14 for controlling the movement of the robot arm. Alterna- tively, a laser sensor or an ultrasonic sensor is provided for this purpose.

An sensor 15, e. g. an image capturing device, a laser sensor or an ultrasonic sensor is provided for indicating the presence of an animal in the animal space 4. The sen- sor is associated with the robot 6.

Furthermore, the animal space 4 is delimited i. a. by means of a gate means 16, com- prising a pair of gate members 18, each being provided with a driving means 19 in the form of a pneumatic or hydraulic cylinder.

The robot 6 is provided with a control means 23 (see figure 2), which i. a. controls the movement of the robot arm 8, selects the kind of animal related apparats to be utilise and opens and closes the gates 18. Furthermore, a registering means 20a in the form of a timer is provided for registering the length of a complete animal re- lated operation, such as teat cleaning with subsequent milking.

Figure 2 shows schematically the apparats of figure 1 in more detail. The robot ann 8 grips the teatcup 12a by means of the gripper 10. The robot arm 8 with image capturing device 14 is moved towards a teat 2 la of the udder 21 b of an animal to be milked by means of a driving means in the form of pneumatic or hydraulic cylinders 22 associated with said control means 23.

The teatcup 12a is of the generally known kind. comprising a shell and a liner forcing an intermediate space, which is connecte to a source of vacuum via a pul- sator 26. The interior of the liner is connecte (not shown) to a milking vacuum cre- ated by the vacuum source 24.

Each cylinder 22 is provided with a registering means 20b in the form of a timer, which registers the running time of the cylinders 22. Furthermore, the image cap- turing device 14 and the vacuum source 24 are provided with such registering means 20c, 20d, that register the running time thereof, respectively.

The pulsator 26 is also provided with a registering means 20e. however either in the form of a timer, which mesures the running time of the pulsator, or a pulsation conter, which counts the number of pulsations generated by the pulsator 26.

There may be provided one pulsator 26 for all the teatcups 12a (only one shown in the figure, but there is of course one teatcup provided for each teat to be milked) or one pulsator for each teatcup 12a. In the latter case, there is provided one registering means 20e per pulsator 26 Figure 3 shows schematically the same robot arm as in figure 2, however with an- other animal related device in the gripper, namely a teat cleaning device 12b, which is provided with a driving means, which performs a counter rotating movement of a pair of circular cylindrical rushes. The driving means is associated with a register- ing means 20f in the form of a timer, which mesures the running time of the driv- ing means.

Furthermore, the driving means 19 of the gate members 18 are connecte to a reg- istering means 20g, which mesures the running time of the cylinders 19.

OPERATION An animal related operation is started when as animal has entered the animal space 4, which is sensed by the animal presence sensor 15, and is an indication for the start of an animal related operation.

The driving means 22 of the robot arm 8 are started and the teat clearing device 12b is moved towards the teats 21 a of the animal, which teats are located by starting the image capturing device 14. The driving means of the teat cleaning device 12b is started and the teat is introduced between the rotating rushes.

The cleaning operation is repeated for all the teats of the udder 21b.

After performed cleaning, the driving means of the teat cleaning device 12b is stoppe. The running time thereof is registered in the registering means 20£

The robot arm 8 returns the teat cleaning device 12b to a rack (not shown) and fetches a teatcup 12a and moves it towards a selected teat 21a, which is located by means of the image capturing device 14.

While attaching the teatcup 12a onto the teat 21 a, the interior of the liner is sub- jected to a milking vacuum, which causes the teatcup to stay attache on the teat.

Furthermore, the pulsator 26 is started and the intermediate space is subjected to a pulsating vacuum.

The sequence is repeated until all the teatcups 12a are attache to the rest of the teats, the number depending on the kind of milked animal. The robot arm 8 is re- turned to a rest position and its driving means 22 is turned off. The running time of the cylinders 22 and the image capturing device 14 is registered.

After finished milking, the pulsator 26 is shut off and the running time and/or the number of pulsations are registered by the timer 20e. A teat retracting means (not shown) e. g. in the form of a pneumatic motor provided with a rope connecte to a teatcupt detaches the teatcup and returns it to a storage position. Of course, also the teatcup retracting means may be provided with a registering means.

The gates 18 are now opened, by starting the cylinders 19, for allowing the animal to leave the animal space 4. The gates are closed and the cylinders are turned off.

The running time thereof is registered.

The closing of the gates 19 is also an end signal for the whole animal related opera- tion. The timer 20a thus registers the time lapsed between the initial sensed presence of the animal by the sensor 15 and the closing of the gates 19.

Each time an animal related operation is performed, each registering means 20a. 20b etc. is started and the registered value is added to the already registered from previ-

ously performed animal related operations, if any. Accordingly, a memory is pro- vided for accumulating such values.

The control means 23 is preferably set with a maximum running time of each com- ponent 19,22 etc. or a maximum number of pulsations of the pulsator 26, before the control means generates a signal that service has to be performed regarding that component or the whole apparats. As an example, the control means generates a signal when a teatcup liner must be exchanged, outgoing from a maximum running time of the pulsator or a maximum number of pulsations thereof., the maximum time constituting a threshold value.

It should be noted that the vacuum source 24 may be allowed to run continuously or to be stopped after each fniished milking. In each case, the running time thereof is registered.

It should also be noted that the present invention also relates to robot anus with a plurality of teatcups arrange thereon.

Furthermore, a gate means may be provided also as entrance gate into the animal space. Of course, also the driving means of such gates are provided with a register- ing means.

Also other kinds of teat cleaning devices may be used, such as a teat rinsing cup, in which case the running time of the introduced rinsing fluid is registered.

The invention relates to all kinds of milking animals, such as cows, sheep, goats, horses and buffaloes.