RU2267262C2 - Instrument for determining rigidity of teat liner - Google Patents

Abstract

FIELD: agriculture, in particular, milking equipment.

SUBSTANCE: instrument comprises base vertically mounted on poles, said base being adapted for receiving of teat liner to be tested. Finger with measuring ruler in its upper part is inserted into teat liner. Weight hanging hook is disposed in lower part of finger. Two stops positioned under weight have beveled top and U-shaped slot defining inclined supporting surface therein.

EFFECT: increased precision in measuring of teat liner in milking units and increased efficiency.

2 cl, 3 dwg

Description

The invention relates to agriculture, in particular to devices for controlling the quality of nipple rubber (nipple stockings) milking machines.

A known device for determining the rigidity of the nipple rubber (Recommendations for the operation and maintenance of milking installations. M: Rosselkhozizdat, 1970, p.21). The device contains a bracket on the rack, into the sleeve of which a nipple tube is inserted. A load is hung on a rod placed inside the tube and the caliper mounted on the rack fix the elongation resulting from a 6-second exposure to the load.

The disadvantage of the described device are:

1. The inability to use the device for nipple rubber with a milk pipe.

2. Low accuracy, because it is difficult to simultaneously and instantly record time by a stopwatch and measure the elongation of rubber with a caliper. In addition, with an increase in the time of measurements, the rubber under the influence of the load continues to stretch, which increases the measurement error and requires repetition.

The closest in technical essence and the achieved technical result is a device for checking the elongation of the nipple rubber (Rational use of milking machines. Recommendations, Krasnodar, 1986, p.32). The base of the device, having a ring under the head of the nipple rubber and a measuring ruler, is mounted vertically on racks made in the form of a tripod.

A finger with a head is passed inside the nipple rubber, having an opening at the end for suspending the load. The disadvantages are low measurement accuracy and labor productivity for the same reasons as in the above device.

The objective of the invention is to increase the accuracy of measurements and increase labor productivity.

The objective of the invention is solved in that in the device for controlling the rigidity of the nipple rubber, including a support element for the nipple rubber vertically mounted on the racks, a measuring ruler, a finger with a head for hanging the load, the measuring ruler is fixed to the finger by means of a nozzle with a threaded connection, the length of which is more than 30 mm, and under the load suspended from the finger, stops with a beveled top with a U-shaped cut are installed, the width of which is less than the diameter of the load. Racks are made removable and adjustable in height by means of threaded connections.

The essence of the invention lies in the fact that due to the design of the device at the time of measurement, the nipple tube is in a static state, because cargo movement is stopped, which ensures measurement accuracy and ease of use.

The invention is illustrated by drawings: figure 1 - device, General view with a section; figure 2 is the same, a section aa, figure 3 - emphasis.

The device for controlling the stiffness of the nipple rubber consists of base 1, for example, in the form of a milking cup cut from the bottom of the sleeve with fasteners 2, mounted vertically on the legs 3 screwed into the fastening 2 of the base, standing on the base plate 4. A test nipple rubber 5 is inserted into the base 1, moreover, it can be of any type: with a removable or monolithic milk pipe, or with a nozzle. A finger 6 with a thickening 7 in the middle part is inserted into the teat tube. On top of the finger 6 by means of a nozzle 8 with a threaded connection, the length of which is more than 30 mm, a measuring ruler 9 is fixed. The thickening 7 is located at the level of exit from the base 1. At the bottom of the finger 6 there is a hook 10 (slot) for the load 11 in the form of a cylindrical kettlebells. On the base plate 4 are placed with the possibility of free movement on it two stops 12 made, for example, of wood, with a beveled top 13 and a U-shaped cutout 14, the width of which is larger than the diameter of the load 11, with the supporting surface 15 with an inclination angle greater than bevel angle 13.

The device operates as follows. The device is installed on a horizontal base plate 4, adjusting the legs 3 screwed into the base 1 so that the base 1 is located strictly vertically. In the base 1, a nipple rubber 5 is installed, made in conjunction with a milk pipe, for example, DD.00.041 A, with an active part length of 115-130 mm. A finger 6 is inserted into it with a length of 400 mm and a diameter of 6 mm, which abutment 7 rests against the milk pipe, and its lower end with hook 10 extends beyond the milk pipe. On top of finger 6, a nozzle 8 is screwed onto a threaded connection 8 with a 80 mm measuring ruler 9 so that its zero mark is at the level of exit from the nipple rubber 5. Next, with a single hand, a load of 11 weighing 6 kg is suspended on the hook 10 and at the same time the other hand is turned on stopwatch. After 6 seconds (or another period, depending on the measurement methodology used), the stops 12 are brought under the load 11 until it is fixed on the supporting surface 15. In this case, the load is fixed between the stops 12, and further elongation of the nipple rubber 5 under the influence of the load is impossible. Over the specified time, the elongation of the nipple rubber 5 took place, the size of which is determined by the scale of the ruler 9, lowered with the finger 6. Then the load is removed, the stops 12 are pushed to the sides, the finger 6 is removed from the nipple rubber 5 and the rubber 5 from the base 1. The device is ready to determine the stiffness of the next nipple tube sample.

When working with a shortened nipple tube of type 68 V-1, the nipple rubber 5 is connected through a connecting ring with a milk pipe. Next, the process is carried out in the same way as in the previous example.

When working with nipple rubber without a milk nozzle of type DD.003B, the factory upper head of the milking cup is installed and then the stiffness is determined in the same way as described above.

The requirement for the length of the threaded connection is due to the need to determine the stiffness of the nipple tubes of different types having different lengths. With any type of nipple rubber, it will be possible to set the scale to “0”.

Thus, the proposed device improves the accuracy of measurements, provides ease of use, thereby increasing labor productivity.

Claims (2)

1. A device for controlling the rigidity of the nipple rubber, including a support element for the nipple rubber vertically mounted on the racks, a measuring ruler, a finger with a thickening and a hook for hanging the load, characterized in that the measuring ruler is fixed to the finger by means of a nozzle with a threaded connection, the length of which is longer 30 mm, and under the load suspended from the finger there are mounted stops with a beveled top having a U-shaped cut with the formation of a supporting surface inside it in the form of an inclined plane with an inclination angle greater than that of the beveled top, and the width of the cutout is less than the diameter of the load. 2. The device according to claim 1, characterized in that the racks are made removable and adjustable in height by means of threaded connections.

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