RU2030986C1 - Hydraulic apparatus for disconnecting tight-fit joints - Google Patents

Abstract

FIELD: equipment for repairing operations. SUBSTANCE: apparatus has the shut-off valve 8. Upon the closed valve 8 at pressing down the lever 22 the plunger 15 displaces the working fluid 16 through the outlet opening 19 of the cover 13 and the pumping valve 7 to the driving pipeline 6 and further to the hydraulic cylinder 1. At this period the additional pipeline 9 is released from an excess pressure, created by the plunger pair, due to closing it at one side by the non-return valve 10 and at other side - by the shut-off valve 8. By pumping the working fluid 16, a pressure is being provided inside the hydraulic cylinder 1, and the piston 2 with the plug 3 presses out the finger 21 from the boss of a rotary lever, providing a disconnection of the joint. EFFECT: enhanced serviceability. 1 cl, 1 dwg

Description

 The invention relates to repair equipment and can be used to connect conical and cylindrical joints of the shaft-sleeve type.

 Known hydraulic press containing drive and return piping [1].

 Closest to the technical nature of the invention is a hydraulic device for connector connections with interference, containing a hydraulic cylinder, a drive pipe, discharge and shut-off valves and discharge mechanism [2].

 The disadvantage of this device is the inconvenience in operation due to the fact that the accumulated working fluid in the hydraulic cylinder has to be removed outside, and the spent working fluid from the cavity of the discharge mechanism, on the contrary, is added.

 The aim of the invention is to improve ease of use by using a drive line to return the working fluid from the hydraulic cylinder to the discharge mechanism.

 For this, a hydraulic device for connecting an interference fit connection, comprising a hydraulic cylinder, a drive pipe, discharge and shut-off valves and a discharge mechanism, is provided with an additional pipe connected at the ends to the drive pipe, a check valve installed at the end of the additional pipe located in the discharge mechanism, at the other end of which a shut-off valve is located, and the discharge valve is located in the drive pipe in the area between the connections of both pipes ov.

 The drawing shows a hydraulic device for connector connections with interference, a longitudinal section.

 The hydraulic device for connecting the interference fit includes a hydraulic cylinder 1 with a piston 2 and a plug 3, designed to interact with the extruded part 4, a removable gripper 5, a drive pipe 6, a discharge 7 and a shut-off valve 8, an additional pipe 9, a non-return valve 10 and a discharge mechanism eleven.

 An additional pipe 9 at both ends is connected to the drive pipe 6. At one end of the additional pipe 9 there is a shut-off valve 8. The check valve 10 is installed at the end of the additional pipe 9 located in the discharge mechanism 11 and is connected to the inlet 12 of the cover 13 of the discharge mechanism. A bypass hole 14 is made in the cap and a plunger 15 is located, the cap is threaded to the body of the discharge mechanism 11, in the cavity of which there is a working medium 16 and a piston 18 spring-loaded by spring 17. The discharge valve 7 is located in the drive pipe 6 in the area between the connections of both pipelines 6 and 9 and connected to the outlet 19 of the cover 13.

 The device operates as follows.

 Pre-fill with a working fluid 16 (solid oil) of the cavity of the discharge mechanism 11, the drive pipe 6 and the hydraulic cylinder without the presence of air bubbles. A removable gripper 5 is mounted on the boss 20 of the pivot arm, and the plug 3 is turned out of the piston 2 until it contacts the extruded finger 21. When the shut-off valve 8 is closed, press the lever 22 and use the plunger 15 to displace the working fluid 16 through the outlet 19 of the cover 13, the discharge valve 7 in the drive pipe 6 and further into the hydraulic cylinder 1. At this time, the additional pipe 9 is relieved of the excess pressure created by the plunger pair by closing the check valve 10 on one side and a shut-off valve 8 on the other.

 By pumping the working fluid 16, pressure is created inside the hydraulic cylinder 1, and the piston 2 with the plug 3 extrudes the pin 21 from the boss 20 of the pivot arm, and the connector is connected.

 After several connectors, the cavity of the hydraulic cylinder 1 is filled with a working fluid 16, and the piston 2 leaves the hydraulic cylinder to the maximum permissible value. In this case, the shut-off valve 8 is opened, and the piston 2 is deepened to the bottom of the hydraulic cylinder by known methods, for example, in a vice, screw press, etc.

 The working fluid 16 displaced from the hydraulic cylinder is returned to the housing of the discharge mechanism 11 through the drive pipe 6, a shut-off valve 8, an additional pipe 9, a non-return valve 10, an inlet 12 and an overflow 14 of the hole in the cover 13 with the lever 22 retracted from the housing of the discharge mechanism 11, compressing the spring 17 pistons 18.

 After the return of the working fluid 16 to the housing of the discharge mechanism 11, the shut-off valve 8 is closed, and the device is again ready for operation.

Claims (1)

 HYDRAULIC DEVICE FOR CONNECTING CONNECTIONS WITH TENSION, containing a hydraulic cylinder, a drive pipe, discharge and shut-off valves and a discharge mechanism, characterized in that, in order to improve ease of use, it is equipped with an additional pipe connected to the ends of the drive pipe, a check valve mounted on the placed in the discharge mechanism, the end of the additional pipeline, at the other end of which there is a shut-off valve, and the discharge valve is located in the drive pipe boprovode the area between the two piping connections.