SU1231115A1 - Rod joint - Google Patents

Description

I1

The invention relates to hydraulic engineering and can be used in the composition of mechanical equipment for maneuvering hydraulic engineering and valves.

The purpose of the invention is to facilitate the disassembly of the joint by reducing the friction forces in the thread.

FIG. 1 shows the connection, axial section; in fig. 2 — node I in FIG. one; FIG. 3 is a section A-A in FIG. 2

The connection includes an upper rod 1 having a cylindrical thread end 2, and a lower rod 3 having a cup 5 at the end A with an internal thread 6. The cylindrical threaded end 2 of the upper rod 1 is provided with a split sleeve 7 freely mounted on it and equipped with a removable compression device 8. A round nut 9 is connected on the thread with a cylindrical threaded end .2 of the upper rod 1. The sleeve 7 is connected on the thread to the inner surface of the cup 5. The outer diameter of the nut 9 is smaller than the outer diameter of the split sleeve 7, and the glass 5 has a section 10 without thread with an internal diameter corresponding to the outer diameter of the nut 9 and the length equal to the height of the nut.

15 1

Seal II is located between the cup 5 and the split sleeve 7. I The connection of the rods works as follows.

Prior to assembling the joint, the sleeve 7 is freely put on the cylindrical threaded end 2 of the upper shaft 1, then the nut 9 is screwed in. To assemble the joint, the cylindrical threaded end 2 of the upper rod 1 is inserted into the cup 5, in which the nut 9 is installed in section 10 without thread. Then, by means of a removable device 8, the sleeve 7 is compressed, after which it is easily screwed into the internal thread of the sleeve 5 all the way into the nut 9, after which the device 8 is removed. Connection is ready to go.

When the upper rod 1 is moved downwards, the force to the lower rod 3 is transmitted through the nut 9, which allows a booster force to be applied on the bolt in the order of 1000-2000 ton-force. When the upper rod I moves upwardly, the force on the lower rod 3 is transmitted through the split sleeve 7. After lifting the joint, the split sleeve 7 is compressed by means of the device 8, which allows to ensure the cohesion of forces, friction in the thread and easy disassembly of the connection.

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Claims (1)

CONNECTION OF THE BAR, mainly a hydraulic shutter, including an upper rod having a cylindrical threaded end and a lower rod having a female thread at the end of the tag, which, in order to facilitate disassembly of the connection f a ^: · by reducing friction forces in the thread, the cylindrical threaded end of the upper rod is provided with a split sleeve and a round nut, and the split sleeve is equipped with a removable compression device, and the split sleeve is freely mounted on the cylindrical threaded end and has a a female thread corresponding to the internal thread of the cup, the round nut is connected on the thread to the cylindrical threaded end of the upper rod and is made with an outer diameter smaller than the outer diameter of the split sleeve, and the cup is made with a portion without thread with an inner diameter corresponding to the outer diameter of the round nut, and length equal to the height of the nut. ί 12;