SU1384869A1 - Rod joint - Google Patents

Description

(21) 3973861 / 22-03

(22) 11/10/85

(46) 03/30/88. Bul № 12 (75) V.I. Bazhov

(53) 622.233.05 (088.8)

(56) USSR Author's Certificate No. 488907, cl. E 21 V 17/02, 1974.

The author's certificate of the USSR ff 1102883, cl. E 21 V 17/02, 1982.

(54) CONNECTION ROD

(57) The invention relates to the joints of parts in mechanical engineering and reduces the labor intensity and simplifies the assembly-disassembly, as well as increases the reliability of the connection (C) of the rods. It includes an external thread at the end of one rod 1, a female thread that responds to it at the end of the other rod. 2 and a locking sleeve mounted on the outer surface C in the form of coaxial shells (CO) rigidly connected to each other at the ends with openings at the ends. The inner KO 3 has a spiral slot 4 in the middle part, and the outer part consists of two shells 5, 6c with sawtooth edges 7, 8. Windows 9 are made at the end of one of the shells 5, 6. At the end of the rod 2 there are longitudinal through slots, and the end of the rod 2 has a concave shape. When assembling C, the ends of rods 1: and 2 are screwed together and a coupling is installed on C. Shell 5 n 6 rotate in opposite directions. In this case, the middle part KO 3 twists and it compresses the forming rod 2. The segments of the end of the rod 2 between the slits are bent and cover the thread of the rod 1. The shells 5, 6 approach each other, and the edges 7, 8 fix C. During unscrewing The operation is repeated in reverse .pore dke. 2 hp f-ly, 6 ill.

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The invention relates to joints of parts in mechanical engineering, operating in lightweight conditions with low loads, and can be used in joints that do not require considerable effort during assembly and disassembly.

The purpose of the invention is to reduce the labor intensity of assembly-disassembly, as well as increase the reliability and simplify assembly-disassembly of the joint.

FIG. 1 shows the connection of the rod assembly; in fig. 2 locking coupling; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - the end of the rod with internal thread; in fig. 5 and 6 of the assembly / disassembly scheme of the joint and an example of installation of tools for these processes (the arrows indicate the directions of application of force)

The connection of the rods includes a rod 1 with an external thread at its end, a rod 2 with an internal thread at its end and a locking sleeve installed at the connection, consisting of two rigidly coaxial shells tied together at the ends of the coaxial shells the slot 4, and the outer one, made of two shells 5 and 6. The inner shell 3 in its middle part due to the execution of the spiral slot 4, is a torsion spring. At the adjacent ends of the outer shells 5 and 6 there are sawtooth edges 7 and 8, respectively, and there are windows 9 at the end with sawtooth edges. At the end of the rod 2 with internal thread along its entire length, there are made through longitudinal slots 10. Outer forming 1 end rod 2 with internal thread can be made of a concave shape. At the ends of the locking sleeve, there is a hole 12 for the installation of the tool during assembly — once the connection is worn.

The assembly of the rod connection is carried out as follows.

The ends of the rods 1 and 2 are screwed together with each other. At the same time, due to the presence of through slots 10 on the rod 2 with an internal thread, the screwing is carried out without great effort. Then, a fixing coupling is installed on the connection, in the openings 12 of which

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D t hooks keys for round nuts (see Fig. 5). By turning the knob of the keys, the outer shells 5 and 6 of the locking collar begin to rotate relative to each other — in opposite directions. At the same time, the middle part of the inner shell 3, due to the spiral slot 4 formed on it, twists-with, its inner diameter decreases and it tightly compresses the outer forming 11 ends of the rod 2. The ends of the rod end 2, enclosed between the slots 10, bend and tightly cover external thread end pp angi 1. When the keys are tightened, the inner sheath 3 with slot 4, the spring representing itself, is shortened, the outer shells 5 and 6 approach, sawtooth edges 7 and 8 at their ends engage and the connection is fixed, preventing the shell from unwinding 3.

To unscrew the compound c. Windows 9 between the ends of the shells 5 and 6 insert levers (see Fig. 6), push the outer shells with effort, their saw-like edges 7 and 8 come out of the engagement and the inner sheath - 3 unwinds, releasing the threaded connection from tension rods 1 and 2. The locking sleeve moves and unscrews the threaded connection.

The concave shape of the outer end 11 of the rod 2 provides greater stability of the locking sleeve on the joint surface from the impact of operating forces.

Claims (2)

1. A connecting rod, which includes an external thread at the end of one rod, a female thread that responds to it at the end of the other rod, and a locking sleeve mounted on the connecting surface of the joint differs from the fact that, in order to reduce the extent of assembly - disassembling, at the end of the rod with internal thread there are made longitudinal through slots, and the locking sleeve is made of two rigidly interconnected at the ends of the coaxial shells, the inner part of which has a spiral slot in the middle part, and the outer part consists of two shells with sawtooth edges on adjacent ends. 2. A rod connection according to claim 1, characterized in that, in order to increase reliability, the outer end of the rod with an internal thread has a concave shape. 3, the connection of the rods according to claim 1, about t is characterized in that, in order to simplify the assembly-disassembly, holes are made at the ends of the fixing clutch, and at the end c. The sawtooth edges of one of the sides are made of windows. FIG. 2 All Fig 3 Fy FIG. five one Lever arm / Lever arm / FIG. 6