CN2881288Y - Link rod - Google Patents

Abstract

The utility model is a link rod belonging to the tool for steering of strip shaped object, the link rod is composed of a plurality of uniform chain links by clevis pin with head, the chain link is composed of link body and link tongue, the cylindrical link body is provided with cannelure and side wise hole, the cannelure bottom is provided with feedhole, the link tongue is provided with free running hole and counterbore, and a locating piece is arranged on head part, when the link tongue of the chain link is inserted into the cannelure of another chain link, and the locating piece is inserted into the feedhole, turn the clevis pin to tighten, the link rod becomes a straight rod, after the locating piece is backed out of the feedhole, the link tongue may be turned around the clevis pin and the chain link may be bended, thereby the difficulty for the strip shaped object to shuttle a hole can be settled.

Description

The chain bar

Technical field:

The utility model belongs to the guiding instrument of bar.

Technical background:

The bar piercing hole, also there is not special-purpose guiding instrument at present, the general thing guiding of adopting iron wire and so on, darker as hole, and crooked irregular, and iron wire just can not be guided bar and be passed through, can only destroy hole object structures on every side, for fear of the destruction of object structures, the utility model provides a kind of flexible chain bar, and the guiding bar passes the hole of different shape.

Summary of the invention:

The utility model proposes a kind of flexible chain bar in order to solve the difficulty of bar piercing hole.

The utility model is saved bearing pin by identical chain and is formed by connecting, and chain link is made of joint body and joint tongue, and the joint body is the cylindrical body of trough of belt, in the both sides of groove transverse holes is arranged, and one of them transverse holes has screw thread, in the bottom of groove positioning hole is arranged; In the middle of the joint tongue, slide hole and counterbore, positioning block is arranged, on the spindle nose of bearing pin outside thread is arranged in the end of joint tongue.

Advantage of the present utility model:

1) length of chain bar can be regulated by combination, and easy to carry;

2) chain bar bendable directly can lead and can push away;

3) can guide bar and pass various irregular holes, avoid destruction object around the hole.

Description of drawings:

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the structural drawing of chain link

Fig. 3 is that the P of Fig. 2 is to view

Fig. 4 is the structural drawing of bearing pin

Embodiment:

Chain link 1 is made of joint tongue 3 and joint body 4, joint body 4 is a cylindrical body, there is cannelure 8 centre, on the joint body 4 of groove 8 both sides, one side has horizontal interior threaded hole 9, and opposite side has transverse holes 10, two holes on same center line, positioning hole 13 is arranged in the middle of the bottom of groove 8, joint tongue 3 is an integral body with joint body 4, saves tongue 3 and groove 8 dorsad, the center line unanimity, joint tongue 3 is an offset flat shape, thickness is slightly less than the thickness of groove 8, and envoy's tongue 3 can be put in the groove 8, in the centre of joint tongue 3, longitudinally elongated hole 11 and the counterbore 12 of sliding arranged, and there is positioning block 7 end.Bearing pin 2 is made of axostylus axostyle 6 and spindle nose 5, and spindle nose 5 is to be with externally threaded cylindrical body.

During assembling, the joint tongue 3 of a chain link is inserted the groove 8 of another chain links, and positioning block 7 injects in the positioning holes 13, then bearing pin 2 is inserted transverse holes 9, counterbores 12, slides hole 11, transverse holes 10, screw bearing pin 2, make the shoulder of bearing pin 2 hold out against counterbore 12, chain bar has at this moment just become straight-bar, when need chain rod bending, loosening bearing pin 2, to save tongue 3 and outwards move, the positioning block 7 of envoy's tongue 3 ends withdraws from positioning hole 13, and the joint tongue just can rotate around bearing pin 2.

Claims (2)

1, a kind of chain bar, it is characterized in that: the chain bar is to be formed by connecting with threaded bearing pin (2) by identical chain link (1), chain link (1) is made of joint tongue (3) and joint body (4), joint body (4) has groove (8), transverse holes (9) and transverse holes (10) are arranged respectively on the joint body (4) of groove (8) both sides, positioning hole (13) is arranged in the bottom of groove (8); On joint tongue (3), slide hole (11) and counterbore (12), positioning block (7) is arranged in the end of joint tongue (3).

2, chain bar according to claim 1 is characterized in that: transverse holes (9) is an interior threaded hole.

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