DE3324799C2 - Closed, elastically deformable, externally and internally rigid chain (roller chain) with one-piece, continuous belt - Google Patents

Abstract

The addition includes the improvement of the roller chain according to P 3201351.5 as well as roller chain variants and application techniques. By positioning the chain link pressure flanks D to one another, different curvature radii R can be generated between the deflections around a closed roller chain, at which the flanks D come together and the roller chain stiffens. (Sheet 2) This means for the work area, e.g. B. in the planetary gear, high contact pressure with little flexing work. If the pressure flanks D are already in contact with one another in the circular state of the roller chain, the roller chain forms a toothed ring. A roller chain variant provides hollow links that are lined up on a longitudinally split, two-strand cleated belt and the open sides of which point towards the belt flanks. To couple two gears of a transmission, the roller chain is arranged between the gears as a coupling unit together with two deflecting rollers mounted opposite one another in a web. Space requirements and costs for these gearboxes are lower than for conventional ones. To drive conical pairs of disks, a roller chain variant has a wedge-shaped cross-section and creates the frictional engagement with laterally protruding cams.

Description

- as elastically deformed planets in connection with rollers on the planet carrier in a plane

drive according to P 31 14 154

- stiffened as a toothed ring

- As a coupling link between two or more gear wheels

- as a spring or resilient rolling element between machine parts,

- As a coupling link in the frictional connection between conical discs, by means of lateral protrusions.

The following drawings belong to the invention described below:

Page 1,

F i g. 1–3 Deformation under load P, pitch circle in

nen

Page 2,

1 ig. 4 and 5 deformation under load P up to the stiffening of the chain, pitch circle between head and foot of the links

Sheet 2, F i g. 6.7 and 8 link shapes

Blue 4,

Fig. 9 and 10 rigid chain as a toothed or driving ring

Sheet 5,

F i g. 11 simple coupling unit

Sheet 6,

Fig. 12 coupling unit with stabilizing rollers,

without bridge

Sheet 7,

F i g. 13 coupling unit with one loose and one

mounted stabilizing roller

Sheet 8,

Figs. 14 and 15 miscellaneous

Sheet 9, F i g. 16 and 17 coupling unit, details, tooth pockets

Sheet ok,

I · i g. 18 coupling unit, details, flat tooth

I "ig. 19 chain cross-section inwards and out

tapered, with conical disks in engagement

Sheet II,

I · 'i g. 20 and 21 chain laterally engaged with conical disks.

45 General functional principle and overview

On the drawings, sheets 1 and 2, the functional principle on which the invention is based, elastically deformable, rigid chains, is shown. They work essentially individually or with several chains of the same type with gear wheels and consist of a continuous belt made of elastic material, with a tension zone (S) in it and regularly spaced incisions (K), which allow the individual belt sections to be angled with one another Firmly connected cover transversely to the belt direction made of hard material for each belt section, the coverings together with the belt sections forming the chain links (1). The chain links (1) touch each other with their hard material parts at a point opposite the incisions (K) and, when the chain is deformed by a force (P), rotate around this as the axis of rotation (I), i.e. roll on each other until they roll on the side of the incision (K) at a point (U) and stiffen the chain when it reaches a radius of curvature (R) (R 1). Depending on the application, the axis of rotation (I) of the chain links can lie radially between the inside and outside of the chain and the point of contact (U) radially outside and (or) inside the axis of rotation (!) . The chain can be toothed inside and outside and interact with toothed wheels or friction wheels or be in frictional engagement with conical disks by means of lateral protrusions. It can absorb forces by pushing over the hard metal sheaths and pulling over the belt in the longitudinal direction of the chain and (or) in the radial direction and transfer them resiliently in the state of rest or movement (when rolling).

The "pitch circle" is the connection between the points of contact (I) and the "tilt circle" the connection between the points of contact (U). The “outer pitch circle” refers to a chain with externally toothed links and the “inner pitch circle” to one with internally toothed links. The sides of the links facing each other are referred to as pressure flanks (D) in the following detailed description.

Sheet 1, ¥ i g. 1 shows the section of a closed, elastically deformable, stiff / .vibaren chain from the deflection (Um) to the apex between the deflections with internal pitch circle (axis of rotation I), internal tension zone (S) of the belt, trapezoidal inwardly tapering links (1) and ai: 3 lying belt incisions (K). The chain section between the deflections (Um) is deformed to the radius of curvature (R) by a load (P) so that the chain links (1) touch at points (U) and the pressure flanks (D) de: links (1) lying together. This stiffens the chain in the area of the arch (7 ?,}. There is a pair of forces at a distance (r) with a position in (S) and (U).

F i g. 2 shows the chain section with pressure flanks (D) of the links (1) running parallel to one another. The chain is then stiffened under a load (P) with a curvature radius <χ>.

F i g. 3, upper picture, shows the starting position of a closed chain, with links tapering radially outwards, while the lower picture of FIG. 3 shows the end position of the chain section when the load (P) is applied. The stiffening of the chain occurs with a concave arching arch (R) . The arching curve (R) can be determined by the position of the pressure flanks (D) and, in connection with the position and strength of the tensile zone (S), the (P) opposing contact pressure of the chain sector can be optimized or the flexing work minimized.

Sheet 2, F i g. 4 shows an elastically deformable, rigid chain in the initial circular shape with an arrangement of the axis of rotation (I) between the head and foot of the link (1). The tension zone (S) of the belt lies in the rolling circle planes and incisions (K) are attached to the outside of the wheel. From the axis of rotation (I) , the link tapers outwards and inwards, so that the sides of the link pointing towards one another each form two pressure flanks (D) and (D 1). When an external force (P) acts (Fig. 4, lower picture), a concave radius (R ) is created in the sector between the deflections when the chain is stiffened, and the pressure flanks (QJ lie against one another, while in the area of the deflections the radius (R 1) is established and the pressure flanks (D 1) lie against one another. When the link reaches the deflection, it rolls over on the successor link via (I) and the pressure zone changes from the outside to the inside.

Fig. 5 shows below the circular initial shape of the chain and above the state of the stiffening. The links (1) are turned inwards from the axis of rotation (I)

young and broadened outwards. When the Last ffy a convex arching arises.

Sheet 3, Fig. 6 shows the principle of an elastically deformable, rigid chain, which alternately consists of toothed links (9) tapering outwards and inwards from the axis of rotation (7) and widening outwards and inwards from (I) Links (10) consists. The pressure flanks (d) and (e) of the links (9) emanating from (I) enclose a smaller angle (λ) than the pressure flanks (c) and (Q of the links (10), which form the angle (β) The chain can be stiffened on its inside and outside.

Due to the fact that the concave-like and convex-like link sides lie against one another, the Links each other in the radial direction regardless of the centering function of the belt.

In Fig. 7, 8, a chain variant is presented, fitted with periodontal pockets Y of rotation axis (I) of inwardly and outwardly tapering members (9) extending with of (I) from widening inwardly and outwardly untoothed intermediate pieces (11 ) alternate, the links (9) and intermediate links (11) locking each other radially. The intermediate links (11) are when using a cleated belt according to P 32 0! 3515 hollow and enclosing this or they are designed as a solid part in a two-strand belt. By combining the degrees of tapering and widening of the links (9), (10) or intermediate links (11), different sizes of chain bends, deflection radii and chain arcs of curvature (sheets 1, 2) can be achieved when the chain is stiffened.

The assembly of those chains whose links enclose the belt (according to P 32 01 3515) can be done by the fact that the hollow links on the belt are finished bent or put together in two parts or, as on sheet 9. Fi g. 16 shown in such a way that the cams (M) represent their own parts (8) and are inserted into the cleats (Q) when the links (1) are mounted on the belt (2) through the opening (L) in the link (1).

Sheet 4 shows a stiff set as an application technique Chain as a drive or sprocket.

Hollow links (1) (Fig. 9) are lined up on a belt (18) in such a way that, even in the circular state of the chain, their pressure flanks (D) lie firmly against each other under tension of the belt and the pressure flanks (D) Mt in Run towards the center of the circle. The belt (18) does not have to have any notches on the outside or inside, so it can be made essentially flat there or be made slightly wavy on the sides, with the troughs lying between the links. Relative movements between the links and the belt are therefore possible without friction. As a result, the ring gear absorbs the forces P 2 arising from the torque and the loads P 1 and P 3 acting from outside or inside by means of pairs of forces with position in (U \\ (S 1) or (U 2), (S2) in each case in Distance (V 1), (r 2) with dimensional stability on. The belt can be installed under pretension.

In Fig. 10 shows a previously described ring gear, which is driven by an externally or internally arranged drive wheel (A) (ZS) and transmits the torque to gears (ZX) to (ZS) arranged on the circumference revolving roller (20) are provided. Another application technique is presented in the following sheets:

Sheet 5 shows a transmission consisting of a drive wheel (A), a driven wheel (Zi) and a flexible, simple coupling link (B) arranged between the two in the form of a chain according to the invention. This acts as a coupling link for light loads without aids when the outer diameters (Di), (D2) of the deflections (Um 1), (Um2) are greater than the distance (g) between the links when the link flanks are pressed together in U two gears. The forces exerted by the torque on the deflections (Umi), (Um2) are absorbed by pairs of forces with positions in (U) and (S) . The pitch circle radii (R WK) of the deflections and the pitch circle radii (RA) and (RZ 1) of the drive and driven gear are in points (Ki), (K 2).

(K 3), (K 4) approximately perpendicular to the common tangent (T) and are approximately aligned with one another. The gear wheels (A) or (Z i) can be toothed or friction wheels.

On sheet 6 are di? ljm \ pn \ c \ inven of the component

(B) each stabilized with a roller (L 1) or (L2). The diameters of these are slightly larger than the inner diameter of the deflections. They can be designed to be toothed or toothless.

On sheet 7, a coupling unit is shown which in the deflection each carries a roller (L 1), (L 5) , one of which is rotatably mounted on an axle (AL) attached outside. The coupling element (B) transfers the torque in the area of the deflection (Um2) in a pushing manner from the drive wheel (A) via the roller (L 5) to the gear wheel (Zi). In unverzahntcr role (LS) can 'on the periphery.! He be provided (order 2) additional supports (DA) (DS) deflection.

An improvement in the rolling of the link with small rounding of the rolling edge (I) can already be achieved by convex curvature of the link head and foot (sheet 8, Fig. 14).

Sheet 9, Fig. 16/17 shows in detail the transition of a rigid chain from the drive wheel to the deflection. The drive wheel (A) equipped with flat teeth engages with these in tooth pockets (Y) embedded in the link head ropes of the chain. The pitch circle and pitch circle coincide. The inside of the chain and the deflection roller (LS) are not toothed here, but can also be toothed depending on the load.

Sheet 10, F i g. 18 shows an alternative to the one described above Detail. A chain is used here, the links of which are designed as flat teeth on the outside and inside are. These engage in corresponding tooth gaps on the mating gears.

On sheet 11, a stiff-adjustable chain with a tapered cross-section is shown, the hollow links (12) of which enclose a belt (13). By means of the end face (F) of lateral protrusions (M) of the belt (13), which protrude from the openings (L) of the hollow links (12) over the link sides, the chain with conical disks (16) is in frictional engagement and transmits the Torque. The belt (13) has incisions (K 1) and (K 2) on the head and foot sides, creating cleats (Q 1) and (Q 2). The axis of rotation flies between the head and foot side of the limbs, which taper inwards and outwards from (I) or taper inwards and widen outwards or whose inner pressure flanks (D 1) converge with one another while the outer ones run parallel to one another. The center of gravity (core) of the tension zone (S) lies, depending on the application, in the rolling plane or radially inwards or outwards to this

postponed. This chain, too, can push and pull j; j

transferring the torque. ($!

Sheet 10, FIG. 19 shows a chain, the cross section of which is y

n; i tapers outward and inward. It runs between- 'A

see two pairs of conical disks and protrudes over ■; |

lateral overhangs with both in frictional engagement. The rest of the I

The design is analogous to the chain presented on page 11 \

On sheet 11, Fig. 21 there is another, very flexible one!

Chain variant shown with hollow links that have an io >;<

Straps enclose the outside and inside incisions

and its lateral overhangs (M) in the longitudinal direction

Lost the chain. It can be toothed or unsuspected and have a trapezoidal or double trapezoidal cross-section. The systems according to the invention are also used as elastically deformed planets in a planetary gear according to I ¹ 31 14 154, which are located elastically between gear wheels

In addition 11 sheets of drawings

20th

25th

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Claims (10)

Patent claims: 1.Closed, elastically deformable, rigid chain that works individually or with several chains of the same type with gear wheels, with a continuous belt made of elastic material and regularly spaced incisions in it, which allow the individual belt sections to be angled with one another, with a cladding firmly attached to it transversely to the belt direction made of hard material for each belt section, the sheaths together with the belt sections forming the chain links and touching on the side opposite the incision and rotating around this point, i.e. being able to roll over each other until they also touch on the side of the incision and thus stiffen the chain, characterized in that the axis of rotation (I) of the chain links lies radially between the inside Mid and the outside of the chain and that the contact point (U) flies radially outside and / or inside the axis of rotation 2. Chain according to claim 1, characterized in that the link head sides or (and) link foot sides are convexly curved in the longitudinal direction of the chain and the edges near the axis of rotation (I) are slightly rounded. 3. Chain according to claim 1, characterized in that intermediate links are provided due to the radially inwardly and outwardly inclined edges form a form fit with the neighboring link produce. 4. Chain according to claim 1 to 3, characterized in that the contact point (U) lie radially inside and outside the axis of rotation (I) at the same time, so that the stiffened chain forms a toothed ring 5. chain as a toothed ring according to claim 4, characterized in that an additional inside on his Axis of rotation unsupported stabilization roller is arranged. 6. Chain according to claim 1 to 3, characterized in that that it is used as a coupling link between two or more opposing wheels being stiffened in the deflections and symmetrically when using the same size opposite wheels are also stiffened perpendicular to the wheels 7. Chain according to claim 1 to 3, characterized in that it is an elastically deformed planet in a planetary gear is used, whereby it is stiffened on the sun gear and (or) ring gear. 8. A chain according to claim 7, characterized in that it is also stiffened in the deflections. 9. Chain according to claims 1 to 3, characterized in that it is used as a spring or resilient Rolling body is arranged between machine parts. 10. Chain according to claims 1 to 3, characterized in that lateral projections (M) with conical disks (16) are in frictional engagement (sheet 11, Fig. 20). In P 31 14 154 closed, elastically deformable, rigid chains (called rolling chains) are disclosed, which are essentially gcdacht as elastically deformed planets with high radial spring force for a planetary gear, and which are held together with their connecting links in a common axis of rotation and at Deformation of the chain bends around it, the bend is limited by the links hitting one another on a sial (U) located radially inside the axis of rotation (I) , whereby the chain is stiffened in the deflections on its inside, a further radial deformation at the beginning and Prevents the end of each deflection and there the necessary contact pressure against the sun and ring gear is guaranteed. The same is generated in the chain sections between the deflections by elastically deformed parts which are each arranged between the rigid links. The P 32 01 351 5 is also a closed, elastically deformable, rigid chain, the links of which, however, are lined up on a continuous, elastically deformable belt, each link being firmly connected to the belt. The links are held together with the connecting link in a common axis of rotation (I) by the belt, which has notches on its inner ropes between the links, and when the chain is deformed, as in the case of P 31 14 154, they angle around this from to they meet at a point (U ) lying radially inside the axis of rotation (I) and the chain is stiffened in the deflections on the inside In both the P 31 14 154 and the P 32 01 351.5, the chain is only stiffened in the deflections on its inside can be applied by the elastically deformed parts between the links or by the stiffness of the belt. That means a loss of flexibility and correspondingly hoi.j flexing work. The invention has the task of optimizing flexibility and Anprcßkrafi in the individual chain sections and minimizing the flexing work. This is done by placing the chain on its outside with a certain radius of curvature in one of the corner sections between the deflections or in both or additionally in the deflections, by shaping the links or corresponding inclination of the mutually facing sides of the connecting links from the axis of rotation (I) , in combination with the position of the tensile zone (S) to the point of contact (U), which is fulfilled by claim 1 of the invention. The radii of curvature of the chain against the sun or (and) ring gear and (or) in the deflections in which the Sicifseizung takes place, can in this way on the radius of the sun or (and) ring gear or the distance between the two, depending on Application, to be coordinated. In addition, there are other technical uses for the closed, elastic, preformable, rigid-moldable bo chain possible, in which these forces between gear wheels or machine parts in the longitudinal direction or (and) to transmit resiliently in the radial direction. The invention includes various variants by varying the link and strap shape and b5 shows some application techniques: