RU2032072C1 - Device for threadless coupling of pipes - Google Patents

Abstract

FIELD: mining industry. SUBSTANCE: device comprises connecting member with through channels accommodating a fixing member in the form of a pin bent in the center and intended to fix the pipe union of hydraulic line. Pin is oriented downstream the fluid flow. Half the pin-bending angle should be as stated in the description of the invention. EFFECT: improved design. 3 cl, 2 dwg

Description

 The invention relates to mining and can be used in hydraulic and pneumatic equipment of coal-mining mechanized complexes.

 Known devices for threadless connection of the pipeline, including connecting elements with through channels, a locking element and a fitting (OST 12.44.016-84, p. 3-5).

 The disadvantage of these devices is the low reliability of the connection due to poor fixation of the fitting of the hydraulic line in the presence of interference, such as vibration.

 The purpose of the invention is to increase the reliability of the connections of threadless connecting elements by ensuring the fixation of the pipe fitting in the presence of various interference.

где α - половина угла прогиба штыря, град;
D - диаметр сквозного канала соединительного элемента, мм;
L - длина канала соединительного элемента, мм;
d - диаметр штыря, мм.This goal has been achieved due to the fact that the locking element is made in the form of a pin bent in the center, while half of the deflection angle of the pin corresponds to the following relationship:
α = arctg

where α is half the deflection angle of the pin, deg;
D is the diameter of the through channel of the connecting element, mm;
L is the length of the channel of the connecting element, mm;
d is the diameter of the pin, mm.

< 1,2
а диаметр фиксирующего штыря выбран в соответствии с неравенством:
0,7 <

< 0,9
На фиг. 1 показано соединение при односторонней фиксации штыря; на фиг. 2 - сечение А-А на фиг. 1 (рабочее положение штыря).In this case, the locking pin has a length l exceeding the length of the connecting element and determined by the dependence:
1.1 <

<1.2
and the diameter of the locking pin is selected in accordance with the inequality:
0.7 <

<0.9
In FIG. 1 shows the connection with one-sided pin fixing; in FIG. 2 is a section AA in FIG. 1 (operating position of the pin).

Соединение безрезьбовых соединительных элементов осуществляют посредством фиксирующего элемента в виде изогнутого в центре штыря, проходящего через сквозной канал 2 соединительного элемента, например муфты или тройника, осуществляющего фиксацию штуцера 4 трубопровода, при этом штырь ориентируют по направлению движения жидкости.A device for connecting threadless connecting elements of pipelines includes a connecting element 1, for example, a sleeve or tee with through channels 2 for placement of fixing elements 3 in them and a pipe fitting 4, the fixing element is made in the form of a pin bent in the center, while half of the deflection angle of the pin corresponds to the dependence :
α = arctg

The connection of the threaded connecting elements is carried out by means of a fixing element in the form of a pin bent in the center passing through the through channel 2 of the connecting element, for example, a sleeve or tee, which fixes the pipe fitting 4, while the pin is oriented in the direction of fluid movement.

при этом фиксирующий штырь имеет длину, превышающую длину канала соединительного элемента, что соответствует зависимости:
1,1 <

< 1,2 а соотношение диаметров фиксирующего штыря и сквозного канала соединительного элемента определяется неравенством:
0,7 <

< 0,9 Указанные диапазоны обеспечивают наибольший положительный эффект.Reliable fixation is ensured when half the bending angle corresponds
α = arctg

while the locking pin has a length exceeding the length of the channel of the connecting element, which corresponds to the dependence:
1.1 <

<1.2 and the ratio of the diameters of the locking pin and the through channel of the connecting element is determined by the inequality:
0.7 <

<0.9 The indicated ranges provide the greatest positive effect.

Claims (3)

1. DEVICE FOR TAPLESS CONNECTION OF PIPELINES, including a connecting element with through channels, a fixing element and a fitting, characterized in that the fixing element is made in the form of a pin bent in the center, while half of the deflection angle of the pin corresponds to the dependence

where α is half the deflection angle of the pin, deg .;
D is the diameter of the through channel of the connecting element, mm;
L is the length of the channel of the connecting element, mm;
d is the diameter of the pin, mm. 2. The device according to claim 1, characterized in that the fixing element has a length exceeding the channel length of the connecting element, and is made in accordance with the dependence
1.1 <l / L <1.2,
where l is the length of the pin, mm;
L is the length of the channel of the connecting element, mm 3. The device according to claim 1, characterized in that the ratio of the diameters of the locking pin and the channel of the connecting element are dependent
0.7 <d / D <0.9,
where d is the diameter of the pin, mm;
D is the diameter of the channel of the connecting element, mm

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