CN2141849Y - Improved chain - Google Patents

Abstract

The utility model relates to an improved chain with a sleeve which is assembled between the punched holes of corresponding inner chain links. The outer circumference of the sleeve between two inner chain links is sheathed with a chain roller while a chain axle is inserted in the center through hole of the sleeve. Besides, outer chain links are respectively assembled at the two protruding and extending ends of a chain axle. The key point of the improvement is that a round of flange is formed by the inward extension of the circumference of the punched holes of the inner chain links. The inner diameter of the flange extends to the punched hole to form an amplexation flange facet with the central axes are overlapped and simultaneously presses the outer diameter of the sleeve with the same inner diameter. Moreover, a round of inwardly concave edge is formed on the chain roller at the position corresponding to the flange of the inner chain links to contain the flange.

Description

Improved chain

The utility model is about a kind of improvement chain, is meant that especially a kind of chain overall width that do not increase just can promote obvolvent area between inner chain sheet and lining, makes lining more firm and vertical after assembling, and further promotes the improvement chain of inner chain sheet tensile strength.

Common chain is broadly divided into two kinds on lining is arranged (bush) chain and liner-less chain, and the utility model is improved at the chain that lining is arranged.

At first, see also Fig. 1, it is a kind of assembled sectional view of chain in the past, mainly be closely to assemble lining 12 in 111 of the perforation of two inner chain sheets 11, plug directly to chain rivet 13 in lining 12 center through hole 121, then closely assemble outer chain sheet 14 respectively in chain rivet 13 2 outstanding ends, and roll 15, so just can form complete chain 1 in the sheathed again chain of each lining 12 outer periphery.Though but chain 1 mat aforementioned components and combination still can produce following disappearance when using:

(1) steadiness, the perpendicularity of assembling lining are poor: as previously mentioned, the lining 12 of chain 1 is tightly to be inserted in respectively in the perforation 111 of inner chain sheet 11 by two ends to keep steadiness and perpendicularity, therefore the ring of 12 of the perforation 111 of inner chain sheet 11 and linings is established obvolvent area size, except the direct perpendicularity and steadiness that influences lining 12 assembling, also relevant with the inlay resultant force of 11 of lining 12 and inner chain sheets; Yet the inner chain sheet 11 of chain 1 just forms two directly to perforation 111 on plate body, above-mentioned perforation 111 is after moulding, its internal diameter obvolvent area is subjected to the restriction of plate body thickness and can't arbitrarily increases and decreases, so when assembling lining 12, its steadiness and perpendicularity are limited naturally, even can directly have influence on the inlay resultant force of 11 of lining 12 and inner chain sheets.If the steadiness of lining 12 is not good, and the space that two inner chain sheets are 11 snaps in the sprocket of sprocket wheel, then close-fitting with it inner chain sheet 11 just easily produces crookedly because of rocking of chain 1, causes running to have some setbacks, and this is the disappearance of chain 1 on inner chain sheet 11 in the past.

(2) tensile strength of inner chain sheet 11 is poor: width was about equally after assembling for the inside and outside chain sheet 11,14 of chain 1 in the past, and its two end forms perforation 111,141 respectively, as shown in Figure 1, the perforation 141 of outer chain sheet 14 is to allow chain rivet 13 wear, and the perforation 111 of inner chain sheet 11 is interior except wearing chain rivet 13, the lining 12 that tightr assembling diameter is bigger, therefore, if perforation 111 apertures of inner chain sheet 11 are greater than outer chain sheet 14, then its 111 inwalls to wooden partition 112 width between the plate body edge of boring a hole can be little than the wooden partition 142 of outer chain sheet 14 also; Not only wooden partition 112 was less for 111 peripheries and the inner chain sheet 11 of chain 1 was bored a hole in the past, and did not have other reinforcement measures again, and therefore, when being subjected to the external force drawing, just horizontal stroke is easily by the fracture of perforation 111 peripheries.

More steadiness and vertical is provided to provide after the assembling of a kind of lining main purpose of the present utility model, and the inlay resultant force between itself and inner plate is good and can improve the chain of inner chain sheet tensile strength.

Major character of the present utility model is: the inner plate perforation periphery of chain inwardly vertically stretches out bead, bead has identical internal diameter with perforation, its central axis is overlapped, and closely embrace an end that is located at the lining external diameter, roll corresponding inner chain sheet bead place in the chain of this lining outer rim assembling and then form the recessed edge of a ring respectively for the bead projection; By this, the chain overall width does not increase the obvolvent area that just can promote between lining and inner chain sheet, and to strengthen the steadiness and the perpendicularity of inlay resultant force and assembling lining, aforementioned bead also can be promoted the tensile strength of chain sheet perforation periphery.

Relevant the utility model is for reaching above-mentioned purpose, and technological means that is adopted and effect thereof are enumerated preferred embodiment now, and cooperates that graphic details are as follows:

Graphic simple declaration:

Fig. 1 is a kind of assembled sectional view of chain in the past.

Fig. 2 is the assembled sectional view of the preferable possible embodiments of the utility model.

Fig. 3 is the view sub-anatomy of the preferable possible embodiments partial component of the utility model.

At first, see also Fig. 2,3, the utility model also by: inside and outside chain sheet 2,3, lining 4, chain roll 5 and chain rivet 6 formed.Two inner chain sheets 2,2 ' relatively are assembled in two ends of lining 4, and directly to plugging chain rivet 6, chain rivet 6 two projection ends are then assembled outer chain sheet 3 respectively in lining 4 center through hole 41, and lining 4 outsides between two inner chain sheets are assembled chain again and rolled 5; Improvement of the present utility model focuses on: the inwardly vertical projection taper bead 22 of perforation 21 peripheries of inner chain sheet 2, bead 22 has same inner diameter with perforation 21, its central axis is more overlapped and to form be big obvolvent edge face 23 more in the past, this obvolvent edge face 23 more can closely embrace the inner chain sheet 2,2 ' obvolvent edge face 23,23 of a upper and lower settings that is located at lining 4 ', can keep the steadiness of assembling lining 4; And in order to adapt to inner chain sheet 2 beads 22, the chain that is assembled in 2 of two inner chain sheets rolls inboard, 5 two end and also forms respectively and move back the annular recessed edge 51 that pulls out (taper), this recessed edge 51 is slightly larger than the external diameter of bead 22, making things convenient for bead 22 inside projections, ccontaining, and then keeps chain and rolls 5 flexible running.

By above explanation as can be known, the utility model major character is under the situation of keeping inner chain sheet 2 original thickness and chain overall width, make perforation 21 peripheries of inner chain sheet 2 inwardly stretch out bead 22, and the complete hard-pressed bale of obvolvent edge face 23 energy that makes bead 22 internal diameters and 21 combinations of perforation makes the utility model produce following effect in an end of lining by this:

(1) lining 4 steadinesss and perpendicularity after group is stood are good: the utility model is after assembling, lining 4 two ends are except being subjected to the coating of original inner chain sheet 2 perforation 21 internal diameters, more but mat is shown the extension of bead 22 and is increased its obvolvent edge face 23, and on, the inner chain sheet 2 of following setting, 2 ', its obvolvent edge face 23,23 ' effective increase, can make lining 4 be subjected to long-pending half of overlapping body diameter that almost reach of envelope, therefore, when the space of 2 of chain two inner chain sheets snaps on the sprocket of sprocket wheel, the steadiness of aforementioned assembling can prevent that also inner chain sheet 2 is just crooked easily when the chain beat, and is smooth and easy to keep chain operation.

(2) inlay resultant force of 4 of inner chain sheet 2 and linings is preferable: as previously mentioned, the utility model can make the obvolvent area of 4 of inner chain sheet 2 and linings strengthen, thus its in conjunction with after more firm.

(3) tensile strength of enhancement inner chain sheet 2: the inner chain sheet of chain was flat plate body in the past, on plate body, form two more directly to the assembling of wearing the lining cover, this structure makes that the inner chain sheet punch inside diameter is big than outer chain sheet, when causing chain 1 to be subjected to the external force drawing naturally easily, pull apart by inner chain sheet 11 peripheries of boring a hole in advance; And the utility model utilizes bead 22 and chain to roll 5 recessed edge 51 under the situation that does not increase inner chain sheet 2 thickness, and make inner chain sheet 2 perforation 21 perimeter flange 22 extension and strengthen its tensile strength.

By above explanation as can be known, progressive and practical really improvement chain of the present utility model.

Claims (1)

1, a kind of improvement chain, it is closely to wear lining between the perforation of the inner chain sheet of two correspondences, and the lining external diameter is assembled with chain and rolls, and its internal diameter then wears directly to chain rivet, and aforementioned chain rivet stretches out the inner chain sheet end and assembles outer chain sheet more respectively;

It is characterized in that: the perforation periphery of inner chain sheet inwardly stretches out bead, and the internal diameter of bead is identical with piercing aperture, and its central axis is more overlapped and form the obvolvent edge face hug lining; The chain at corresponding again bead projection position rolls on and forms corresponding recessed edge, the then projection in it of the bead of inner chain sheet.

Images