DD146784A1 - NACHMELK AND MELKZEUGABNAHMEVORRICHTUNG - Google Patents

Abstract

The invention relates to an automatic Nachmetik- and Melkzeugeabnahmevorrichtung, in particular for flieszbandfoermig or intermittently operating milking systems. The object and the object of the invention are to nachzumelken with little effort and a not tending to permanent deformation device cow and anschlieszend the milking machine. The task is solved by the serving for Melkzeugabnahme rope is guided over a rope deflection, which is mounted remotely controlled and loosable below the udder on Standplstz the cow. There are several variants of the generation of Nachmelkimpulse, several variants of the attachment of the cable deflection and various control variants for the operations "Nachmelken" and "removal of the milking parlor" described.

Description

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After milking and milking device

, Field of application of the invention;

The invention relates to a Nachmelk- and Melkzeugeabnahmevorrichtung, in which at the milking end by means of a rope and a pneumatic working cylinder both a train on the milking machine for the evening meal and the removal of the milking machine is made by the udder.

Characteristic of the known technical solutions: Melkapparate for milking parlor plants are mainly provided with devices for milk flow monitoring and automatic defeat devices for the milking process, which signal the milking and interrupt the milking process when a certain milk flow is exceeded. This prevents the harmful melamine from being considered as harmful. A large part of the cows is not completely milked out at this time, so that usually a milking with the milking machine for the production of Nachgemelks is made.

In part, milking systems are additionally equipped with devices for the automatic removal of the milking devices from the udder, which remove the milking cluster j after the milking end has been signaled.

However, these systems have the disadvantage that post-milking must be dispensed with and considerable quantities of fat-rich milk are not produced. The cow udders also tend more to mastitis under these conditions.

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In order to eliminate this disadvantage, efforts are made to realize the extraction of Nachgemelks by special mechanisms. For this purpose, devices have been developed that act on the udder in a suitable manner before the automatic removal of the milking parlor from the udder and allow a complete recovery of the Nachmilch.

The known Melkzeugabeabevorrichtungen exist in. essentially from the working cylinder and a rope without or with different deflections on rollers. Scissor-shaped support and Einziehmechahismen for the milking parlor are known. The rope pulls the scissor arm. The higher cost has the advantage that the milking parlor, when it slips off the udder, is held by the support arm 'ün-d does not fall on the contaminated stable floor.

Articulated arms and swiveling devices that slide on curves have not proven successful, as they are insufficiently adaptable to the movements of the cow and require high Platζaufwand.

Provided with Nachmelkeinrichtungen removal devices usually consist of two pneumatic cylinders in which one exerts a rhythmic pulling movement on the udder via a lever and the other causes the removal of the milking unit from the udder by means of piston rod or a rope.

In the patent application WP A 013/211594 a combined Hachmelk- and removal device for the milking machine is described, which consists of a support arm, which is movably mounted on all sides, a winding device for the removal cable, the pneumatic cylinder for pulling the removal cable and a pneumatic or electromagnetic Clamping and lifting device for generating rhythmic movements of the support arm is described. This device is compared with the previously known devices much more advantageous because the device is very adaptable and can be combined with existing pullers consisting of cylinder and rope. The pros

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However, the direction has the disadvantage that the sliding support arm, can jam in the leadership. Due to the change in position of the cow, the transmission ratio changes on the lever arm, so that when. After milking at the udder different tensile forces can occur. The differences are not great in the case of sailing, but disadvantageous. This device exerts a vertical pull on the udder during clumping. It is more advantageous if the rear teats are more heavily loaded, as it is known in milking equipment, which exert a constant diagonal pull in the direction of the front legs of the cow for the purpose of Nachmelkens. In another known solution, a constant diagonal pull on the udder is produced by spring loading. This has the disadvantage that at the milking ei ⁿ repeated retightening of the spring is required. A constant pull on the udder can also lead to slipping of the milking parlor. Furthermore, most Nachmelkeinrichtungen with levers or support arms has the disadvantage that they can be easily damaged and complicate Meikbecherzwischendesinfektion and backwashing.

Object of the invention:

The aim of the invention is to develop a Nachmelk- and removal device that is very simple, reliable and insensitive to deformation by the cow, a favorable pulling direction exerts on the udder and saves space.

The technical task is to allow using the well-known and proven deduction option by pneumatic cylinder and rope without additional support or Ausschwenkarme the Nachmelken.

Presentation of the invention of the invention:

The after-milking and milking device according to the invention has a deflecting device for the traction cable mounted below the udder at the cow's stand, which can be released by means of a remote-controlled locking device and whose. Working cylinder for the pull rope over

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externally controlled valves either directly or via a reducing device connected to the vacuum line or the atmosphere and is able to perform rhythmic pulling movements with less force and collect the rope with greater force. To reduce the pump power, the working cylinder may have a cylinder volume reducing second piston. Furthermore, two separate working cylinders with separate tasks 'for rhythmic pulling movements and pulling the rope can be used, both cylinders each have a pull rope, but only the rhythmic Zugbewegun-' gene serving rope is deflected at the stand of the cow.

The operation of the embodiments is the following: When attaching the milking the working cylinder is vented and the trigger rope freely movable. The pull rope comprehensive and on this freely movable role or eye is the rope guide and deflection and is manually attached to the stand by means of a lock. At the time of Nachmelkens exerts the working cylinder, controlled by the control unit, the 'reducing device for the vacuum and multi-way valves rhythmic pulling movements on the rope on the milking machine, so that the udder is stretched rhythmically. As soon as the milk flow indicator signals the milking end, the locking device is automatically released by the control unit and multi-way valves, the working cylinder is connected directly to the vacuum line and the rope is pulled in. In order to reduce the pumping power, the second piston, which is provided with a hollow piston rod, is controlled during the after-milking so that it approaches the piston connected to the triggering cable and reduces the cylinder volume. During take-off, both pistons move upwards. When using two working cylinders, these have, according to the required tensile forces, different active surfaces, for the aftermolding serves the smaller and for removing the milking the larger effective area. The leading from Nachmelkzylinder to the milking rope is guided over the detachable deflection.

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, The advantage of this invention is that it can be used without rigid parts and. Have proven trigger cables in practice well, since they are not subject to permanent deformation and are resistant to corrosion. The mobility of the cow is not restricted and in the case of the sluice the most favorable pulling direction can be adjusted. The device is extremely space-saving and does not restrict the working space of the milking staff in any way. Another advantage is that by eliminating the rigid parts there is no risk of injury to the operator. Milking intermediate disinfection and backwashing are normally possible due to the unrestricted mobility of the milking parlor. The operating cost is lower than in other known solutions.

Embodiment:

The invention will be explained in more detail below with reference to several embodiments.

the basic principle of Nachmelk- r and Ausschwenkvorrichtung,

an improved version with a cylinder, another version with two cylinders, another variant corresponding to FIG. 3 »the circuit diagram of the valves of FIG. 1 for the operation" attach milking parlor ", the circuit diagram for the operation" post-milking ",

the circuit diagram for the operation "removal of the milking parlor",

the circuit diagram of the valves according to FIG. 3 for the working process "attach milking parlor ³¹ , the circuit diagram for the" after milking "operation,

the circuit diagram for the operation "Removing the milking parlor ^!? ,

the locking device for the Seilumlenkeinrichtung and

Fig demonstrate; • 1: 20 Fig- Fig , 2: Fig • 3- Fig , 4: • 5: 25 Fig Fig , 6: Fig • 7: 30 Fig , 8th: Fig , 9: , 10: 35 Fig • 11:

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Fig. 12ϊ another locking device for the Seilutnlenkeinrichtung.

As can be seen from Fig. 1, the Nachmelk- and Melkzeugeabnahmevorrichtung from the cylinder 1, the KoI ben 2, the traction cable 3> an eyelet or pulley 4 with a hold eel ement 5> ä-Q®- 'transmission linkage 6 and with this firmly connected latch 7> the latch actuator 8, which can be done both pneumatically, hydraulically and electromagnetically. With the latch actuator 8, a cutting device 9 is connected. For the pneumatic or hydraulic control requires a control valve 10 which is connected via a control line, not shown, with the switching device. The control valve 10 is connected to the vacuum line by means of a "connecting line 12. From the vacuum line 11, a connecting line 13 leads to the vacuum reducing valve 14 or to the control valve 15." The control valve 16 is connected between the vacuum reducing valve 14 and the control valve 15.

This facility works as follows:

Before dairy starts, the milking machine is parked. According to Fig. 7, the cylinder 1 is supplied via the connecting line 13 and the valve 15 from the vacuum line with vacuum. The piston 2 with trigger cable 3 and attached milking machine 17 are in the end position.

Via the line 12 and the valve 10, the latch actuator 8 is under vacuum. The milk tube 19 guided through the closing device is closed. During the attachment of the milking the cylinder 1 receives via the valves 16, 15 atmospheric air (Fig. 5), the piston 2 can be pulled down. The eye or roller 4 hangs loose on the trigger cable 3 · With her the holding element 5 is rigidly connected. The latch actuator 8 pushes in this moment on the transmission linkage 6, the bolt 7 in. Locking position. The holding element 5 with eyelet or pulley 4 is manually attached to the latch 7, so that the cable deflection is firmly anchored to the stand of the cow. The milking can now or even before the attachment of the roller 4 in the latch 7 are set. The pull rope 3

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attached to an eye of the Milchsammeistückes 17 - and hangs loose, so that the cow can move. During milking, this condition is preserved. When the amount of milk decreases to a predetermined milk flow rate, the switching device switches over the valve 16, and there is communication from the vacuum line 11, via the reducing valve 14 and the valves 16, 15, to the cylinder 1 (Figure 6). During this pulling phase, the air is sucked out of the cylinder 1, the traction cable 3 tightens and pulls the Milchsammeistück 17 · After switching back of the valve 16 in the peeling position of Fig. 5, air flows through the valves 16, 15, the weight of the piston 2 and the rope 3 cause a relief of the train on the udder until the valve 16 initiates the next train phase. This process is continued until again falls below a predetermined MiIchflußgrenze. Then the control unit switches the valves 15, 16 u. The vacuum in the line 11 is now via the line 13, the valve 15 in the cylinder 1 slowly, on the other hand via the line 12 quickly effective. The control valve now connects the vacuum line 11 with the latch actuator 8. The receding piston causes a compression of the guided through the closing device 9 milk hose and retraction of the bolt 7, so that the holding element 5 and the trigger cable 3 are released.

The raising piston 2 pulls the milking unit into its end position. By switching over the valves 10, 15, 16, the starting position is reached again.

Fig. 2 shows a solution that is technically complicated, but requires a lower pump power. This solution differs in that in the cylinder ΙΟΙ a piston 102, a piston 1Ο3 with a hollow piston rod 104 is ·. The two pistons 10 2, 10 3 delimit two working spaces 10 1, 10 6. On the cylinder IO1 a check valve 1Ο7 is arranged for the air supply. The piston 1Ο3 'has a mechanically controlled check valve 1Ο8. This solution differs according to FIG. 1 in that the line 1Ο9 is fork-shaped and the branch lines are connected to the check valve 1Ο7 and the hollow piston rod 104-.

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The effect differs as follows: When. Placing the milking the entire cylinder 101 is vented, the pull cable 3 can be moved freely. During the aftermath, the space 1O5 is evacuated via the piston rod 104- during the pulling phase. The check valve 1O7 prevents the evacuation of the space 106, the piston 1O2 pulls the rope 3 taut. At the same time but the Gegenkolbeh 103 is pulled down, During the discharge phase, the air is supplied via the hollow piston rod to the space 1O5 and the check valve to the space IO6. The piston 1O3 slides down by its own weight. During the next pulling phase, both pistons 10 2, 10 3 continue to approach until the stop HO 'on the piston rod 104 hits the cylinder housing 10 1.

The stopper 110 is adjusted so that during the Nachmelkens the pistons 102 and 1O3 can not touch. If the aftermath is ended, the space 105 is connected directly to the vacuum line 11 via the valve. The lower piston 102 is pushed to the piston 103. The piston 102 opens on its touch a mechanically controllable check valve 1O8, so that the spaces 1O5, 10O6 are connected to each other and have the same pressure conditions. Thus, both pistons 1O5; 10O slide into the end position.

Both variants (Pig 1 and Fig. 2) have the disadvantage that a vacuum reduction must be made in order to obtain different forces between Nachmelken and Melkzeugabnahme. For this purpose either a reducing valve 14- is required for each milking unit, or two vacuum lines with different pressures would have to be present.

When in Pig. 3 illustrated solution eliminates the Vakuumreduzierventil 14-. But you need two cylinders 3O1; 4O1. with two pistons 302, 402 and two cables 303, 403, both of which are attached to the milking gear 17. The cable 403 is fastened and deflected with the retaining element 5 on the bolt 7. In this case, both valves 315; 316 parallel to the vacuum device 11 and the cyclic

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switched to the 3 ^ t; 4OrJ. The switching position of the individual operations can be seen in FIGS. 8, 9, 10. The control line ^ O for the latch actuator 8 is connected directly to the cylinder 3 ^ 1.

Fig. 4 shows a modification of Fig. 3. Here, the eye or pulley 404 is firmly anchored below the udder, ¹ and the cable 3 ° 3 is fixedly connected to the hook 407, while the rope 403 is loosely mounted and automatically disengages from the hook 407 during removal of the milking machine.

Fig. 11 shows the locking device with simultaneous shut-off device for the milk hose. The locking device consists of the base plate 20, on which sleeves 21 are welded. In the sleeves 21, the bolt 7 slides »which is connected via the transmission linkage 6 of a fork-shaped clamping device 22 with the piston 23. As a return force for the piston 23 is a compression spring 24. On the housing 25, the control line 12 is connected, which leads from the vacuum line 11 via the control valve 10 to the working chamber 18. Between the clamping device 22 and the housing 25 of the milk hose 19 is passed.

The mode of action is the following:

During milking, the latch 7 is held by the compression spring 24, and the clamping device 22 is opened. Once the withdrawal process is initiated, the working chamber 18 is replaced by the valve 10 vacuum, the piston 23 is pressed against the spring 24, the milk hose 19 squeezed and pulled over the transmission linkage 6 of the latch 7 from the sleeve 21, so that the holding element with role 4 and the rope 3. be released.

12 shows another particularly advantageous locking device, with which it is possible to steplessly adjust the point of the Urilenkung of the role on the stand of the cow in a position optimal for the liachmelkvorgang

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len. Here, the latch 7 is replaced by a rail 207. The base plate 220 has U- or V-shaped profile and forms with the rail 207 a slot 222. The rail 207 is laterally displaceable, so that the slot 222 can be widened. The base plate is mounted under the cow so that the slot 222 is parallel to the longitudinal axis of the cow. It has an extension on one side and is closed on the other side. To guide the linkage.208 is a sleeve 221, and as a safeguard against lifting the rail locking pins 209 are provided. On the roller or eyelet 204 is the holding element 2O5. After attaching the milking machine to the udder, the holding element 2O5 is inserted with a roller or eyelet 204 in the slot 222 and placed in a position favorable for the Nachmelkvorgang depending on the state of the cow. When removing the cluster from the udder the Haiteelement 2O5 is released with roller or eyelet 204 by retracting the rod 208 connected to this rail 207.

widened the slot 222.

A further advantageous variant of the locking device is that the base plate and / or the holding element is designed as an electric magnet and so a releasable connection between the base plate and retaining element is created.

Claims (14)

1. Nachmelk- and Melkzeugeabnahmvorrichtung with working cylinder and attached to the flue trigger, Milchflußüberwachungsgerät, control device for generating rhythmic pulling movements on the udder and for removing the milking machine and device for automatically shutting off the milk hose characterized in that for the Nachmelkvorgang one at the stand of the cow below the Euter angeord-. Nete Seilführungs- and deflection device is present by remote control Betätigungsigbärer lock and that a working cylinder with controllable working pressures or two working cylinders with different effective surfaces and the same pressure are present, each working cylinder connected via a rope with the milking and serving the Nachmelken rope over the Redirection is performed. 2. Nachmelk- and Melkzeugeabnahmevorrichtung according to item 1, characterized in that the Seilführungs- and deflection device consists of a sliding on the rope role, eye or hook. 2 1 81 5 1 - ^ήΛ ~ Invention claims: 3 · Nachmelk- and Melkzeugabnahmevorrichtung according to item 2 characterized in that the Seilfüiirungs- and deflection device is non-positively connected to a holding element which serves the lock. 4. 25 Nachmelk- and Melkzeugabeabevorrichtung according to item 1, characterized in that a linkage with bolts serves as a lock. 5 · Nachmelk- and Melkzeugabnahmevorrichtung according to item 1 and 4, characterized in that the locking of the Seilführungs- and -derlenkseinrichtung is non-positively connected to the closing device for the milk hose. 6. Nachmelkeinrichtung after item 4 characterized in that serves as a lock sliding on the base rail. 7. Nachmelkeinrichtung according to item 3 and 6, characterized in that between the base plate and rail, the holding element is slidably mounted with the Seilführungsund-deflection. 8. 'Nachmelkeinrichtung according to item 1, characterized in that for locking a Slektro- or permanent magnet is used. , 9. Nachmelkeinrichtung according to item 1, characterized in that the Nachmelken the vacuum line is connected via a reducing valve and two three-way valves with the working cylinder. 10. 15 Nachmelkeinrichtung after point 9 marked in that a three-way valve serves the rhythmic reversal of the pressure conditions during the aftermath. 11. Nachmelkeinrichtung according to item 1, characterized in that for removing the milking the vacuum line is connected via a three-way valve directly to the working cylinder. 12. Nachmelkeinrichtung according to item 1, characterized in that when using two Arbeitszylindem the Nachmelken serving rope is releasably secured to the deflection. -12- 2 18151 13 · Nachmelkeinrichtung according to item 1 and 12, characterized in that the serving the carnations rope is releasably connected to the milking. 14. 30 Nachmelkeinrichtung according to item 1, characterized in that the two operations serving working cylinder is provided with an automatically controlled counter-piston. , ,