DE2711158A1 - HAYMAKING MACHINE - Google Patents

Description

1 ^ .03.1977

WILHELM STOLL Maschinenfabrik G.m.b.H.

3325 Lengede / Broistedt

"Haymaking machine"

The invention relates to a haymaking machine with at least one by one upward. Rotary axis rotating rake wheel (rotary rake), which has several cam-track-controlled and spoke-like arranged tine support arms provided with rake tines, which in the curve-track side (inner) end area each via a centrifugal clutch with at least one engaging in the cam track Control roller having control roller lever in the rake-tine use position can be coupled and for automatic pivoting up the rake tines are arranged so as to be spring-loaded and rotatable in an out-of-use position uncoupled from the control drive.

Such a haymaking machine is already known from DT-OS 21 46 655.

The one from Pig. 3 and 5 of this DT-OS construction, the control roller lever, which is provided on the tine support arm so that it can be rotated relatively, is equipped with sliding wedges and takes on a compression spring-loaded, duroh centrifugal force axially displaceable switching ring on its basement profile, the wedge profile of which in the position, which is due to the centrifugal force, is displaced outwards.

809839/0051

ment via the KeiSprofile of the control roller lever and one the control roller lever adjacent, non-rotatably arranged on the tine support coupling ring (bush 30) extends. There are a total of three basement profiles, which on the one hand require expensive production and on the other hand when coupling and uncoupling the control roller lever due to the sliding friction in a disadvantageous manner greater wear subject. It is also disadvantageous that the centrifugal weight-fitted switching ring provided with a small radial distance to the axis of rotation to achieve the required for the coupling process

Centrifugal force even with relatively low gyroscopic rovation

Because of the relationship F = m »r» o, sftin must be relatively large and heavy and this mass is constant - also with is moved (pivoted) along with the decoupled zinc tragaim-Jiurvenbahn-controlled for the rake-out-of-use position. The space-consuming executed and arranged centrifugal force-equipped switching ring can also be due to the limited space in the In the area close to the curve path, only a small number of them are arranged of tine support arms too, so that this construction for large-sized vielarmlge gyro rakes, z. B. rake with large working group, is unusable.

According to Flg. 7 of the aforementioned DT-OS, a structurally simpler solution is sought by assigning a toothed shift weight that can be moved by centrifugal force to the control roller lever, whose tooth bit cooperates with a locking groove of a coupling ring which is arranged in a rotationally fixed manner on the tine support arm. These too Construction needs a lot of accommodation sadness and leaves that The control roller lever is constantly under the force of the shift weights. It can also be dysfunctional due to the short power arm, too little centrifugal force development in the lower speed ranges of the tractor engine and thus the PTO, z. B. with only partial use of the tractor drive power - if the force arm were enlarged, on the one hand there would be even less favorable momentum of force in the

/ 3 809839/0051

-y-

To catch the control drive and, especially when the tine support arm is uncoupled, to accept it unnecessarily and, on the other hand, to limit the number of tine support arms (due to otherwise existing risk of collision between adjacent arm constructions) is disadvantageous.

The object of the invention is to create an improved haymaking machine of the type mentioned at the beginning which, with a simple structure and largely unmanned operation, is good Performs work, in particular a simple, overall small-volume structure of the tine support structure in a curved path near area shows that the timing drive is gentle and durable, and despite the rotation-dependent interconnection of tines and control cam a large rotary rake working width and thereby a flawless work execution possible.

According to the invention this is achieved in that the centrifugal clutch assigned to each tine support arm has at least one with one within the tine support arm housed flyweight connected locking part, which in the coupled position couples the tine support arm positively with the control roller lever.

A haymaking machine designed in this way has a small-volume structure in the end area of the tine support arms adjacent to the dam curve path, so that a large number of tine support arms can be provided with a small angular distance from one another and nevertheless the individual tine support arms automatically (i.e. without Intervention by the tractor driver) in a compulsorily controlled working position or in an uncontrolled (i.e. from the ground swiveled up) out of use position are movable. The centrifugal clutch is used for temporary indirect coupling the prongs with the cam track are designed and / or arranged to save space so that the / each rotary rake has just as many

Λ 809839/0051

You can have a tine carrying tree in a construction without such coupling, d. H. with constantly cam-controlled Tine support arms. The subject of the invention (in particular as Sehwnder) thus also has the advantage that, due to the dense sequence of zinc support arms, it has a sufficient number of raking units and thus even with a large working width carries out a flawless (clean) raking job, but is also not excavated for road travel and the like needs, so it can be designed as a trailed haymaking machine - this machine design enables, on the one hand, a simpler, especially time-saving cornering at the headland than at Liftable machine design arranged on the tractor by means of a three-point headstock and, on the other hand, use on smaller (less powerful) tractors that have no or our have weak lifting hydraulics. It is also of particular advantage that the mass of the 2inkentragarm Konstruktlon, which is constantly moved by the cam track, is kept relatively small and / or largely centric to the Zine support arm cross-section attacking is provided so that a There is a largely impact-free run, the timing drive is spared and thus longevity is guaranteed.

The locking part can be formed in one or more parts and with the Control roller levers can be coupled in an end-face or casing-side latching connection.

In a particularly preferred embodiment, the latching part is from one on the end of the tine support arm on the curved path articulated - while pivotable transversely to the tine support arm longitudinal axis - mounted latching pawl formed in the coupling position in At least one locking receptacle, such as a groove, opening or the like, of the control roller lever which is rotatably mounted on the tine support arm intervenes. The latching pawl can have an end region in the tubular toothed bearing support at least at the end on the curved path.

809839/0051 ^{/ 5}

rest arm and in the other end area one around the prong tragana have around detent lug as well as under the force effect of a below a desired minimum gyro rake working speed the return spring that removes the centrifugal force and causes the decoupling are at a standstill.

To achieve a particularly space-saving design continue to trftgariae η the end of the pipe on the curved track side slotted and this slot should fall through the latch in such a way that the entire coupling mechanism is essentially preferably completely, within the tine rack of the control roller lever resting thereon extends.

The latch can be connected via a flexible connecting means such as rope, chain or the like, or via at least one Connect the end of the articulated rod with a flyweight displaceable in the tine support arm or with one yourself Equip sliding / rolling back and forth movable flyweight. In the last-mentioned type of construction, according to a further preferred feature of the invention, an angle lever is used provided as a latching part (latch), which in its one, lever arm running approximately in the longitudinal direction of the tine support arm (angle arm) one preferably from the flyweight, e.g. B. role, durchfapte guideway for the flyweight on many.

Furthermore, it is preferred to use the latching part (the latch) as to form a rocker arm (double-arm swivel lever) housed within the tine support arm, with its longitudinal axis runs obliquely to the longitudinal axis of the tine support arm, one on the shell side Coupling causes spring-loaded in decoupling position provided so that it can be pivoted out of the control roller lever and on its lever arm opposite the coupling area in particular is indirectly connected to the flyweight.

/ 6 809839/0051

Another embodiment sees a locking device as a Spring-loaded spreading mechanism, which is arranged inside the tine support arm and is coupling on the shell side, which is caused by the displacement of the centrifugal weight in the coupling position has bringable and preferably spring-loaded retractable coupling claws. The coupling claws can be used as Parts of a scissors-like expanding rod can be formed or provided such that they can be disengaged in the coupling position via at least one draw wedge.

In a further, preferred embodiment of the invention the control roller lever has a coupling attachment that engages in the tine support arm, the tine support arm points in its interior with an axial distance to this control roller lever clutch attachment a clutch part, such as locking groove, Stcg (e), Stii't (e) od. The like. On and between the control roller lever coupling approach and the tine support arm coupling part is a movable in the tine support longitudinal direction as well as these two aforementioned Parts due to centrifugal force in a form-fitting connection coupling coupling member, such as disk, fork or the like. Arranged. The coupling part provided so that it can be moved back and forth can be connected to a »separate flyweight or can itself be designed as a flyweight.

According to a further concept of the invention, the sensitivity of each centrifugal clutch can be changed in order to achieve a to achieve haymaking machines that can be adapted to the respective requirements. For this, the effective distance of the flyweight is from the coupling point or the mass of the flyweight - if necessary, both can also be changed.

Advantageous further developments of the subject matter of the invention are to be found in the other subclaims.

The scope of the invention extends not only to the Features of the individual claims, but also on their combination.

809839/0051 ^{/ 7}

The idea of the invention allows various execution options

\ aen

to. Some of them are reproduced in diagrammatic form in * drawings.

It shows;

Fig. 1 is a partial side view of a gyro rake a haymaking machine according to the invention with controlled tines, with di ^ tine support arms each via a centrifugal clutch uiit a control roller lever having at least one control roller engaging in the cam track Can be coupled and uncoupled depending on the Kroisel * rake rotation

are,

2 shows a longitudinal section through de.n the curved path End of a tine carrier arm of the same haymaking machine, with the centrifugal clutch Between the tine support arm and the control roller lever there is one in the tine support arm Has latching pawl which, via a flexible connecting means, is connected to a further outside, but the flyweight housed in the tine support arm is connected,

Fig. 3 bie 7 a longitudinal section through the centrifugal clutch having area of modified tine support structures.

The haymaking machine according to the invention has at least one revolving rotary rake (rake) 3, which revolves around an upwardly directed rotation axis, driven by at least one running wheel 1 supported on the ground, which has a plurality of prongs (rake prongs) k provided, cam-controlled and spoke-like in a rotary

809839/0051 ^{/ 8}

. χ lO-

frame 5 arranged tine support arms 6 has. In order to ensure a good raking and swathing belt in the working position, cattle can move the tines h, which are approximately vertical, preferably spring-loaded, up and down during each revolution around the axis of rotation 2 via the respective tine support arm 6 and each run approximately horizontally Mounted tine support arm 6 is arranged pivotably about its longitudinal axis via a control roller 8 enclosing a control cam track 7 which is connected to the axis of rotation 2 in a rotationally fixed (motion ^ rigid) manner. Each Stetierrollc 8 is mounted on a control roller lever 9 which can be coupled to dom Zinkenti-agarm 6 via a centrifugal clutch. that when the coupling connection between a tine support arm 6 and the control roller planer 9 assigned to it is released, the tines h are automatically pivoted up into the out-of-use position.

The haymaking machine according to the invention is designed as a drawn machine and, depending on the rotary rake colation, can be automatically brought into working and transport position by simply creating or interrupting the powerful connection between the tines and the cam track 7 through the centrifugal clutch of each tine support arm 6 Tine support arms 6 in the out-of-use position of the tines h circle uncontrolled about the axis of rotation 2. With this machine version, there is no need for a lifting device (tractor hydraulics).

The centrifugal clutch assigned to each tine support arm 6 has at least one clutch that is accommodated within the tine support arm 6 Flyweight 13/14 connected locking part.

/ 9 809839/0051

In the particularly preferred embodiment according to FIG is the locking part vou one at the end of the curve overbalm Zinkentrogartnes 6 articulated latching pawl 15 formed, which in Kuppelatstellung in at least one Rastaufnahiae 16, such as Groove, breakthrough or the like, of the control roller lever 9 rotatably mounted on the tine carrier 6 engages. The latch 15 »nd the control roller lever 9 are in frontal, i.e. H. Lateral ridge connection can be coupled. The tine support arm 6 ict tube-shaped at least at the end of the curve path (as Hollow body) and the latch 15 is designed and arranged such that it is essentially within, of the cross section of a bearing bushing 9 »of the control roller lever 9 mounted on the tine carrier 6.

The latch 15 can be pivoted transversely to the tine support arm lungsacnse and can in the manner shown with an in With respect to the tine support arm cross-section extending radially Lagorvorcprung 15a in a radial, preferably Blind hole-like and larger in cross-section than the bearing projection cross-section dimensioned transverse bore of the Zinkentrnganncs 6 or on a pivot axis that penetrates the latching pawl 15 to store. The latches — bearing projection 15a has one rounded support surface with which he is on an abutment, preferably surrounding the tine support arm β and the axial Fixation of the adjusting ring 17 serving the control roller lever 9. The locking pawl bearing projection is preferred 15a formed by a separate part and in terms of length adjustable (adjustable) arranged in the latch 15; However, it can also be used as part of the latch 15 in their Manufacturing be molded.

The bearing point of the latching pawl 15 lies on the end of the pawl opposite the coupling point. On the one hand, one To ensure a space-saving structure and, on the other hand, to achieve good lateral guidance of the latch 15, the tine support arm is 6 slotted near the coupling point and this

809839/0051

Slot 6a is passed through by the latch 15. The shape of the latch 15 can be of various types - however, what is required is a locking lug 15b which is guided around the tine support arm 6 and which is connected to the the locking receptacles 16 associated with the control roller lever 9 cooperate (see Fig. 2). This latching lug 15b can protrude laterally beyond the rest of the latching pawl course or else accordingly Fig. 2 by a notch (notch) arise. So that there is a space-saving construction even in the uncoupled position, the contour of the detent pawl 15 on the cam track side is designed (in particular formed by a bevel) that it thereby is approximately perpendicular to the longitudinal axis of the tine carrier (see Fig. 2).

The latch can be designed as a one-part or multi-part workpiece and be designed as a stamped or forged part.

On the side facing the outer tine bracket end is the Latch 15 via a preferably flexible connecting means 10, such as rope, chain or the like. With the tine support arm 6 displaceable Flyweight 13 connected. To if the desired Rotary rake speed decoupling quickly To ensure the tine support arms 6 from the control drive, the latch 15 is assigned a return spring 19. In preferred This return spring 19 is fixed at one end by the latch 15 and at the other end is a tine support arm supporting compression spring - the return spring can be in the area of the tine support slot 6a in the latch 15 between their bearing point (in particular bearing projection 15a) and the locking lug 15b be embedded and on the tine support arm end wall of the slot 6a.

To change the sensitivity of the centrifugal clutch, the centrifugal weight 13 can be spaced apart from the latching pawl 15 changeable or / the flyweight infillse ^ changeable be. The flyweight 13 can be designed in several parts / divisible and / or provided interchangeably. Instead of a flexible one

809839/0051

Verbindungcraittels 18 for the flyweight Befontigung to the latch 15, according to the type in Fig. H a hingedly arranged at least at one end rod intended purpose.

It is used to protect the centrifugal clutch from contamination preferred and advantageous that the end of the zincetitragarnilionstruktion on the curved track side to be provided with a protective cover. This is particularly easy to achieve in ^ deia dem Tine support arm 6 or the adjusting ring 17 arranged thereon a cover 20, preferably Uastdeckel, is assigned - this Lid 20 can be designed to seal dust-tight or, with the exception of small, tool receptacles for a dismantling tool (e.g. B. screwdriver) must be closed.

In the embodiments of the invention described below (as in the drawing) only the different structure of the centrifugal clutch is dealt with.

According to FIG. 3, the latching part is also formed by a latching pawl, which is numbered 21, but the centrifugal weight Ik is not indirectly connected to the Raat pawl 21, but is directly assigned to the latching pawl 21. The llastltlin.'ie 21 has a guide track 22, which is slightly inclined with respect to the longitudinal axis of the tine support arm, for at least one flyweight i * ». ^T he end points of the guideway 22 and the ^ the control roller lever 9 enclosing latching lug 2ib lie on a triangle, the hypotenuse of which runs on the guide track 22nd

The latch 21 can have a wide variety of shapes. The design as a V-shaped part (angle lever) is particularly advantageous. In this preferred angle design, the angle arm running approximately in the longitudinal direction of the tine support arm is provided with a slot, preferably an elongated hole, as a guide track. 22 equipped for a role forming the flyweight lh. On the one hand, to ensure sufficient stability and, on the other hand, enough room to move for the connection required for uncoupling

809839/0051

Only having swiveling available is the guideway 22 having angled arm of the V-like latch to the free linden tree designed to taper.

The latching pawl angle arm having the guide track is preferably designed in the manner of a double-shaped lever and stored ready for use. The guideway 22 is on the kurvenbabrsaeitlgen At the end of the go wolt over the locking pawl loosening point (e.g. D. IiSgervorsprung 2ia) pulled forward and in such a way compared to the prongs Longitudinal axis of the support arm arranged in an inclined plane, that if a predetermined (desired) rotary rake speed is not reached, the centrifugal weight 14 for the tine support arm-Abliuppeln Resetting spring-free, mass-shifting automatically Moved back to the end of the guideway on the curved track.

Ucraft In this version, too, the sensitivity of the hydraulic clutch can be changed. The eec can be carried out particularly easily if the effective length of the guideway cannot be changed in length. For the purpose of change in length of the guide track characterizing nn which the rotary rake axis of rotation 2 of the distal end 21, a Raßtklinke hineinbewegbares in dio Führungebahn Voretcllglled 22 (not shown), preferably a screw, "be located.

Fig. K shows a construction in which the Haetteeil is formed by a detent pawl 23 arranged outside of the tine support arm 6 and with its end part opposite the pivot axis 2h (with or without detent) with a preferably formed by an opening and between the bearing bushing 9a and the control roller 8 provided Ilas tauf would take 25 of the control roller lever 9 cooperates. The locking pawl 23, designed as a one-armed lever, is preferably supported in an adjusting ring 26 arranged on the end of the tine support arm 6 on the curved path -

809839/0051

ßiittel) associated with aem raittlercit Ilactklop-nberej ch. A return spring counteracting the centrifugal force 13. 28 is organized on the pole 27.

Instead of the front-end (lateral) load-connecting rods written in advance The parts to be coupled can also be wrapped in a jacket tiger snap-in connection can be connected to one another - Fig. 5 and 6 give two of several possibilities of such Construction again.

In the embodiment shown in Fig. 5, a reefing device (load part) is provided within the tine carrier 6, in particular directly connected to d <ni flyweight 13, expandable by centrifugal force-induced displacement of flyweight 13 and movable back under spring force. This expansion mechanism is preferably designed as a scliaxiiarti gev, linkage. In this case, the cantilever-like sj> stimulus-capable Üwei V-shaped joint mounted, acting as coupling claws spreading levers 29, each designed as a rocker arm (double-armed swivel lever) as well as in the area of the curve-side V-tip with entüprecliendetn with relative freedom of movement a common coupling part 31, to which the flyweight 13 is assigned, are connected. The two Spreis Levers 29 are provided about pivot axes 32 running transversely to the longitudinal axis of the Zinkentragarw due to centrifugal force to the outside, ie up to the toll-side Eiuraetung in locking receptacles 33, grooves, slots or the like return springs 3 * t provided between the coupling arm and the coupling part 31 can be moved back into the uncoupling position.

In a further, not shown embodiment, the expansion mechanism with at least two coupling claws (expansion levers) equipped, which is connected to the flyweight 13 or designed as a flyweight draw key in

809839/0051 ^{/ Vi}

The clutch position can be moved outwards (disengaged).

Fig. 6 increases a version in which that locking part of a rocker arm 6 housed within the joint arm 6 Rocker arm) 35 is formed. This rocker arm 35 runs with its longitudinal axis struck to the tine support arm longitudinal axis and is about a transversely κιιγ ZinkcHtragcrm-yingsachse extending Golenkachsc 36 sideways vernchvenkb & r. To the the lever arm facing away from the coupling part is suitable Way dtts within the Zinkentingarmes 6 backward movable Flyweight 13 attached (vorzugweinc indirectly articulated). The return spring 37 required for the uncoupling process is designed as a tension spring and preferably likewise attached to the lever arm facing away from the coupling area.

The embodiment according to FIG. 7 shows that it is also possible to couple the prongs with the arm 6 by means of a coupling member 38 that can be moved back and forth in the longitudinal direction of the prongs. In a preferred manner, the control roller lever 9 is equipped with a coupling attachment 39 that encompasses the tine support arm 6 "the at least one lint (Schi it") or at least one projection for the purpose of establishing a box connection with the coupling member 30 that can be moved in the longitudinal direction of the tine support arm owns. The control roller lever coupling attachment 39 is located inside the tine support arm 6, a coupling part 40 provided with a locking groove, at least one web, pin or the like. in such a way that the coupling member 38 can produce a form-fluid connection between the parts 39 and kO to produce the coupling connection between the zinc tragaria 6 and the control roller lever 9 and is out of engagement with the part 40 in the uncoupling position. The coupling member 38 is spring-loaded in the direction of the cam track 7, preferably by means of a tension spring 41 (as a return spring) arranged in the control tube 9, and preferably via the flexible connecting means on the side facing away from the cam track

in the

18 with the tine support arm 6 axially displaceable flyweight

809839/0051

. aa.

tied together. In a particularly preferred, illustrated embodiment, the coupling element 38 is formed by a round disc and the coupling part kO with a recess that accommodates about half of this disc and the control tube lever coupling receiving recess provided. The coupling part Ί0 if; t miverdrehnar with the Hohrkürper of the Zinkentrngnnnes 6 verbund vi during the Steuerrollenlihel-Kupjklmigsnnsntz 39 axially limit; i., but stored twisted in the tine carrier 6. To fall out: J-cheren axial limitation of the Steufij-rollenhewel — coupling attachment;

39, at least one transverse pin k2 can be provided. t

According to a further, not shown and prinzipMüQjg on Figure 7 building construction is the Kiipplungsglicd 38 itself designed as a floating weight, in the control roller lever clutchGiU! - Sentence 38 compulsorily leads soA / ie at the end of the curve path on one attached to the control roll lenliebcl 9 associated Zuffedor.

Hot constructions is the Racttcil or that with it associated flyweight in the decoupled position in a suitable Way hermetically blocked.

809839/0051

Claims (1)

with at least one to an aui'vmrts- Direction of rotation axis revolving Entreibbax * en rake wheel (circle raking), the curved path controlled with several old Reehainken and storage-type ink tragany has, which in Kurvenbahnseitenon (inner) end area each via a centrifugal clutch with at least one a control roller blind engaging in the control cam path Crying control roller levers in raking tines ~ Gebrav.cb.s ~ * setting can be linked and for automatic uploading of the Reolinking into a disengaged division uncoupled from the steering drive Are arranged rotatably spring-loaded, characterized by one associated with each tine carrying cord (6) Centrifugal clutch with at least one with an innex * half of the tine carrier (6) housed the escape weight (13/14) connected locking part (15, 21, 23, 29, 35, 38). 2. llcuverbungsc'ficchlne according to claim 1, characterized in that that the locking part at least partially, preferably predominantly within the cross-section of the on the zinc tragari? (6) bearing bushing (9a) of the control roller lever (9) is housed. (Fig. 2, 3, 5 to 7) Haymaking machine according to Claims 1 and / or 2, characterized in that the latching pawl (15, 21, 23) and the steering roller lever (9) can be coupled in a latching connection at the end. (Fig. 2 to Ί) k . Haymaking machine according to one or more of Anspi'ü.che 1 to 3f, characterized in that the latching part is mounted on a latching pawl (15, 21, 23) articulated on the end of the tine support arm (6) on the curved path, pivoting transversely to the longitudinal axis of the tine support arm. is formed, which is in coupling / 17 809839/0051 ■ * t · • i pelstellung in at least one locking receptacle (l6, 25), such as Groove, breakthrough or the like., The rotatable on the tine support arm (6) engages overlying control roller lever (9). 5. Haymaking machine according to one or more of the address 1 to ή, characterized in that the Itaotkllnke (15 »21) with an Emi area in at least the kurvenluih;: - lateral end of tubular tine support arm (6) golosed i ^ t and in the other end area one around the tine support arm (6) has around locking lug (l5t>, 21b). 6. "haymaking machine according to claim 5, characterized in that that the curved path-side pipe end of the tine support arm (6) slotted and this slot (6a) in coupling position of locking part (15, 21, 23, 29, 35) is thin. 7. A haymaking machine according to one or more of claims 1 to 6, characterized in that the latching part (l? »21, 23, 29, 35, 38) has a restoring force exerting a restoring force (19, 28, 34, 37 , ¹ Il) is assigned. 8. Haymaking machine according to claim 7, characterized in that that the return spring (19) fixed by one end on your locking part designed as a locking pawl (15) and at the other end is formed on the tine support arm (6) supporting compression spring. 9. Haymaking machine according to claims 7 and 8, characterized characterized in that the return spring (19) in the area of Tine support arm slot (6a) in the latch (15) between its bearing point, preferably a bearing projection (15a), and the locking lug (15b) is let in and is supported on the end wall of the tine support arm. 809839/0051 - Hf - 10. Haymaking machine according to one or more of the claims 1 to 9, characterized in that the locking pawl (15, 21) lflit a bearing projection (15a, 21a) in a radially extending, preferably saekloch-like, transverse bore of the Zinlrentragarraes (6). 11. Haymaking machine according to claim 10, characterized in that that the ratchet bearing projection (l5a, 21a) a has rounded support surface. 12. Haymaking machine according to claims 10 and / or Ii, "'characterized in that the latch-bearing projection (15 »» 21a) designed / arranged to be adjustable (adjustable) in terms of length is. 13. Haymaking machine according to one or more of the claims 1 to 12, characterized in that the Racttell formed by a latch (21) with an approximately in Arialricutting of the tine support arm (6) extending guide track (22) for at least one position changeable in sliding and / or rolling motion Flyweight (14) is equipped. (Fig. 3) lh. Haymaking machine according to claim 13, characterized in that the latching pawl (21) is designed as an arm lever and in its angled arm extending approximately in the longitudinal direction of the tine support arm a slot, preferably a long hole, encompassed by the flyweight (14), preferably a roller, as a guide track (22). (Fig. 3) 15. Haymaking machine according to claims 13 and 14, characterized characterized in that the effective length of the guide track (22) can be reduced in length. 16. Haymaking machine according to claim 15, characterized in that that the purpose of changing the length of the guide track (22) at the end of the 809839/0051 ^{/ l9} Rastklinkc (21) can be moved into the guide track (22) Adjusting member, preferably a screw, is arranged is. 17. Haymaking machine according to claims 13 to 16, characterized characterized in that the angle arm of the V-shaped latch (21) having the guide track (22) extends freely Tapered towards the end. IG. Haymaking machine according to claims 13 to 17, thereby characterized in that the guide track (22) having ^ locking pawl Winkelarra in the manner of a doppelarraigen lever is formed and stored like a pebble. 19. A haymaking machine according to claim 18, characterized in that the guide track (22) at the end on the curved track side is pulled forward so far over the locking pawl bearing point (eg bearing projection 21a) and, in this way, is arranged inclined in an inclined plane with respect to the longitudinal axis of the tine support arm that at If the rotational speed of the rotor rake falls below the centrifugal weight (lk) for disconnecting the tine support arm, it will automatically disengage the return spring free of mass displacement χ moved back to the end of the guideway on the cam track. 20. Haymaking machine according to claims 1 and / or 2, characterized in that the locking part (29, 35) and the control roller lever (9) can be coupled in a snap-in connection on the shell side are. (Fig. 5 and 6) " 21. Haymaking machine according to claim 20, characterized in that that the locking part of a rocker arm (double-armed swivel cable) housed within the tine support arm (6) (35) is formed, which runs with its longitudinal axis, spring-loaded in the uncoupling position from the control roller lever (9) and provided on its the lever arm opposite the coupling 809839/0051 / 20 special indirectly connected to the flyweight (13)
is. (Fig. 6) 22. Haymaking machine according to claim 20, characterized in that as a locking part within the tine support arm (6)
a spreading mechanism which is in particular indirectly connected to the centrifugal weight (13) and which can be expanded as a result of the centrifugal force-related displacement of the centrifugal weight (13) and can be moved back by spring force is provided. (Fig. 5) 23- haymaking machine according to claims 20 and / or 22, "Characterized in that the expansion mechanism as a scissor-like Spreading linkage is formed. 2k. Haymaking machine according to claim 23 »characterized in that. the scissor-like spreading rod has two spreading levers (29) mounted in a V-shape relative to one another, each of which is designed as a toggle lever (double-armed pivoting lever) and in the area of the V-tip on the curved path side
articulated with the corresponding relative freedom of movement
a common coupling part (31) to which the flyweight (13) is assigned. 25. Haymaking machine according to one or more of claims 1 to 2k , characterized in that the space receiving the coupling mechanism, in particular the tine support arm (6),
is sealed dust-tight on the cam track side. 2 B·. Haymaking machine according to Claim 25, characterized in that the end of each tine support arm on the curved path
(6) by means of a cover, preferably a snap-in cover (20),
closed is. 27. Haymaking machine according to claims i and / or 2, characterized in that the control roller lever (9) with a dome 809839/0051 treatment approach (39) in the tine support arm (6) which Tine support arm (6) in its interior with ΑλΊ al distance to Control roller lever coupling attachment (39) has a coupling part (40), such as a grooved part, web (s), pin (s) or the like., Has and between the control roller lever coupling approach (39) and the tine carrier coupling part ('«θ) one of these parts (39, 40) due to centrifugal force in a form-fitting connection coupling, movable in the longitudinal direction of the tines. Coupling"- member (locking part) (38) is arranged. (Fig. 7) 28. Haymaking machine according to claim 27 »characterized in that that the coupling member (38) in the direction of the cam track (7) is spring-loaded in the rotatable, but axially , bordered (safe from falling out) in the tine support arm (6) pin-like coupling shoulder (39) of the control roller lever (9) is housed. 29. A haymaking machine according to claims 27 and / or 28, characterized in that the coupling member (38) is formed by a disc which is positively guided in the control roller lever coupling projection (39) and which is attached to a tension spring (kl) at the end on the curved path and this is connected opposite to a flyweight (13) arranged behind the coupling position (40) associated with the zinc support arm (6). 30. A haymaking machine according to claims 27 and / or 28, characterized in that the coupling member (38) itself is designed as a flyweight, positively guided in the control roller lever coupling attachment (38) and at the end on the cam track side on one of the control roller lever (9) associated tension spring (kl ) is attached. 31. Haymaking machine according to one or more of claims 20 to 30, characterized in that the locking part (15 »23, 29, 35, 38) via a flexible connecting means (l8), such as rope, chain or the like., With an im Tine support arm (6) 809839/0051 / ²² • f 7 sliding flyweight (13) is connected. 32. Haymaking machine according to one or more of claims 1 to 12 and 20 to 30, characterized in that that Ract part (15 »23» 29 »35» 38) over at least one The end of the articulated rod (27) with one in the Zlnkentragaria (6) slidable flyweight (13) connected is. 33. Haymaking machine according to one or more of the claims 1 to 12 and 20 to 32, characterized in that the flyweight (i3) can be changed by means of the detent pawl (21) is connected. 3k. Haymaking machine according to one or more of claims 1 to 33, characterized in that the mass of the fly weight (13-14) can be changed. 35. Haymaking machine according to one or more of the claims 1 to 34 »characterized in that the flyweight (13, 14) is designed to be split in several parts. 36. Haymaking machine according to one or more of claims 1 to 3'i, characterized in that the flyweight (13 »14) is arranged interchangeably. 809839/0051