DE1507338A1 - Automatic shaft coupling - Google Patents

Description

6796 A 22 mw Düsseldorf, Nov. 17, 1966

Applicant : Massey-Ferguson Industries Limited, 915 i.ing street V / est,
Toronto, Ontario, Canada

"Automatic shaft coupling"

The invention relates to shaft couplings for automatic coaxial ^

Connection of two waves.

When mating machine parts are assembled, one part of which is a driving output shaft and the other Part has a driven input shaft, it is usually necessary to to connect the shafts to one another by actuating a coupling or to use a connecting sleeve for this purpose, the is put over the assembled coaxial shafts. That

is especially necessary when the shafts are brought into their coaxial positions transversely to one another.

The object of the invention is to create a shaft coupling in which the shaft parts are automatically connected to each other when they are aligned coaxially.

Another object of the invention is to provide a shaft coupling between the mower and the elevator part of a combine harvester

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to create that automatically causes the connection when the waves be brought transversely to each other from axially offset in a coaxial position.

To solve the above problem, the shaft coupling is designed that it has a pair of coupling steep with axially protruding pins or protrusions that mesh with each other when the coupling parts are arranged coaxially to each other in order to transmit rotational force from one coupling part to the other. The shaft coupling has further displacement means in the form of pins on one of the two coupling steep, which the driving and driven thrusts from Shift positions unsuitable for the engagement and lead them into driving connection when the coupling parts are axially out of one another offset position are aligned coaxially to each other.

In detail, the shaft coupling according to the invention consists of one Drive shaft and one output shaft, each of which has a pair of axially protruding, driving or driven thrusts. When the coupling parts are in an opposing coaxial arrangement, the driven thrusts extend into the rotary path of the driving one Thrusts so that each driving thrust is applied to one of the driven thrusts to apply torque to the output coupling part transferred to. To prevent the driving and driven advances from getting in each other's way when the Coupling parts in relation to each other transversely from the axially displaced Position are brought into the axially aligned position, one of the coupling carries steep a pair of sliding pins, one of which is on

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can abut the other coupling part when the parts are coaxial Almost reached position, but are positioned in such a way that the driving force and driven advances are deflected from mutually disruptive paths and placed so that a drive connection in a coaxial Position is created.

An exemplary embodiment of the invention is shown in the drawing.

Fig. 1 is a partial perspective view of a mowing device as well an elevator part of a combine harvester containing a shaft coupling according to the invention;

Fig. 2 is a view, partly in section, of the shaft coupling in
their engaged position;

Fig. 3 is a perspective view of the drive shaft portion and the Output shaft part of the shaft coupling; and

FIGS. 4, 5 and 6 are diagrams showing how the two parts of FIG
Shaft coupling are brought into engagement with each other.

In Fig. 1, the reference number 2 shows the elevator part of a combine harvester which is used to pick up harvested material with the aid of a mowing device 4. The mowing device 4 is adapted to be detachable can be attached to the elevator part 2, the drive shaft of the elevator with the output shaft located on the mowing device is connected for the purpose of power transmission. The back wall 6 of the mowing device 4 is designed so that it mates with the front end of the elevator part 2 and has an opening 8 which opens into the

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Elevatorte.il 2 leads in when parts 2 and 4 are coupled. Crop material is introduced into the elevator part 2 through the opening 8 with the aid of a screw conveyor 10.

On the rear wall 6 of the mowing device 4 there is a pair of holding rails 12, each of which has a vertical groove 14. Upper and lower bolts 16 and 18, respectively, are in each support rail 12 between the side walls of the grooves 14 attached. On pipe supports 20 and 22, which extend laterally from the upper and lower front ends of the elevator part 2 extend, there are closure parts 24. Driving force for pivoting the elevator part 2 downwards or upwards in relation to the main part of the combine (not shown) about a horizontal axis is conveyed by hydraulic pistons 26 which are reciprocated in cylinders 28 in a known manner.

At the upper end of each closure part 24 there is a hook 30, which has a groove 32 which can engage the upper bolts 16 in the support rails 12. Each of the lower bolts 18 can engage a groove 34 formed in a hook 36 at the lower end of each closure member 24. The hooks 30 and 36 can be brought into engagement with the pins 16 and 18, respectively, in order to couple the mower device 4 to the elevator part 2 by the Elevator part 2 is moved by piston and cylinder 26, 28.

Driving force for the mowing device 4 and the elevator part 2 is supplied by the engine of the combine through a chain 38 that goes on one side over a sprocket 40 that is at the end of a drive

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wave 42 is attached, which is rotatably mounted in the closure part 24: When the bolts have gone 16 and 18 with the hooks 32 and 36 engaged, the drive shaft is axially aligned with the supported by the mowing output shaft 44 42nd The output shaft 4-1 is mounted in a holder 46 which is located on the rear wall 6 of the grinding device 4. The other end of the output shaft ls ~ with the drive of the screw conveyor, the cutting rail and the F-er; 'r: <euhfispel der Mä ^T orrichtur.g 4 in the known way vr-r ¹ :.; Nden,

'"" ■ ~ -. ~ .. o; e A.mri.ebo \ v :: L --.- 42 and the output shaft 44 di: rch Ii- ¹ Iativb ^ A --- m

and
C -; ":".;. "'" VJs ^ hen the Li Avatortril 2 of the mowing device - * «Ma. aligned

ν. "= '.-""'. T- so v-fTcer; sa- for common rotary movement between eip '.- n · , -.: ___;: ·: .- ■ -: - vAippiuiigi ¹ ·; tl ^: 4 3 and an output clutch sir · i!;>: Ο :: - si ^ h? ..:: 'γα _ ""_-.' ..: der; aer Wr: A ■ '? Or 44 are, together '.; Nge ^.: -.!; -; ipelL,

"-A- ^; i. ·.""" Ia-? -inc ": α g ^ ; α; γα w-'rd. closes the drive ') -./aaa»; ur; :: si ¹ .; II 4. ". HAAr ": a he in-rf? Rjn:.,. A- plate 52 a, which has a hub 54 α λα: η which Bl '::: - ύ ^: ε } J", nde ^ er ΑραΊer-3we] je 42 is located. From the disk 52

AA-AA / A vrich axiaJ. a "-a: - .." An ^- ! rubbing advances 56 and 58, the a \ v ~ diarne- "

aas "'- a? a -ϊΠ'-ibeALiAgenvA a, ^ -.-' ter. · from the axis dt-r shaft 4? r. ^r ; ge.> rdn ^of 5-.A * Γα- Aijlr i ^ü a 5VO - ötorse 56 and 5E have on eir.arui ^. t'-rg ^ gerige-AiA ^ - S-: 'er. ^v A / .findl 1' ^- he ^ ussciinLiie GO. which is about *. · - r..er. TeLI of their

f'i-AA .-- Aai g -.- ';;, f3i:'; bv: ΓΑ: .t'gt r ;; -; r. . · - · !! ■ A -. 'In 0 (· A

! "■: in" '

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extending pins 64 are located. The pins 64 are offset by 90 ° with respect to the drive lugs 56 and 58. The length of the pins is greater than that of the drive lugs 56 and 5 8 and, as shown in Fig. , Is greater than the axial distance between the coupling parts in their opposite coaxial positions.

The Abirieb s clutch steep 50 includes a disc 66, the one Hub dS bat, which is non-rotatably provided at the end of the output shaft 44 : s;, A pair of driven vor: össs extend axially from the plate 66 70 Liiicl 72, preferably of circular cross-section, the ■■■ E.uiä.i diverge from one another on diametrically opposite sides of the Axis of the shaft 44 are arranged. The distance between the 'an- "r.Väb ;;:. en advances 70 and 72 is the same as that between the Aiiuriibsvorsxössen 56 and 58 of the drive coupling part 48.

Vv Ie 1. F%. As shown in 2 and 6, the driven thrusts 70 and ΊΖ extend into the rotary path of the drive thrusts 56 and 58 and are ready to. I.: .- shung about the common axis of shafts 42 and 44, if dis V / elLen · *. '! and 44 are in their coaxial position. Accordingly gelier. : he drive lugs 56 and 58 with the output lugs u.!.:. i, \ i. 'ZA. .handle to transmit rotational force from the drive coupling part 48 to S: iii i: .drive coupling part 50. As shown in Fig. 6, 7 ^r ; -. V ¹ : UIs driven thrusts 70 and 72 in the recesses 60 ,. ':. \ -: ~ - ·. ■■ '; - .:; ■ aen drive attachments 56 and 58 are, added.

-. ::> .... 'Ti J .:''.' .. rstrecken axially on the sides of Abbot rubbed skupplungs- ■ /. ". . .:.: - L, 7ig- 2 shown, i.e. the output disk 66 is located

Γ-. Λ Γ- Ci O '""' i '** · "? Ι" Γ »

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between the pins 64.

The pins 64 shown here on disk 48 could move are also located on the disk 50.

The pins 64 make it possible for the drive lugs 56 and 58 are automatically brought into driving connection with the driven thrusts 70 and 72 when the input and output coupling parts are displaced transversely to one another from the axially offset position shown in FIG. 4 into the coaxial position, as in FIGS. 2 and 6 is shown. When the coupling parts are as shown in Fig. 4, ^

namely at the same height, and in the direction of arrows A and B on top of each other to be moved, the drive thrusts 56 and 58 meet with the driven thrusts 72 and 70 and prevent the Clutch steeply to take and do the ko.i .cue Γ 'llung It is thus impossible for the drive lugs to go into engaged drive connection with the driven lugs. That means, that without the pins 64 a transverse movement of the drive pushers 5 6 and 58 carried out to the end when they hit the driven I

advances 72 and 70 would not be possible. In this case it is therefore it is necessary to turn one of the two coupling parts so that the the two pairs of advances cannot meet. The pins 64 are arranged in relation to the drive lugs 5 6 and 5 8, that one of the pins hits the periphery of the output clutch plate and rotates it so far that the advances do not meet can. If, on the other hand, the two pairs of advances during the transverse movement do not meet each other, then the pins 64

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BATH ORIGINAL

positioned so that the output coupling plate 66 is between the pins passes through and allows coaxial mating with the drive coupling part 48, each of the driving thrusts in Engaging connection with one of the driven thrusts goes when the shaft 42 is rotated.

4, 5 and 6 show diagrammatically how the coupling parts are engaged go with each other as they move transversely towards each other and from an axial, spaced-apart position to a coaxial one walk. The pin 64a (Fig. 4) strikes the periphery of the output clutch plate 66, and further movement of the drive clutch part 48 after the output clutch steep 50 causes the pin 64a to the Perimeter of the plate 66 to slide in the direction of arrow C, whereby the drive clutch plate 52 is caused to rotate about the axis of the shaft 42 as indicated by arrow D in FIG. if if the drive plate 52 rotates in the direction of arrow C while simultaneously moving transversely in the direction of arrow A, then it goes the propulsion thrust 56 between the driven thrusts 70 and 72 and makes it possible to assume the coaxial position of the coupling parts shown in FIGS. 2 and 6.

In Fig. 6, the coupling parts have reached their coaxial position and a counter-clockwise rotational movement of the steep drive coupling 48 brings the drive lugs 56 and 58 into driving engagement with the driven lugs 70 and 72. The advances 70 and 72 are received in cutouts 60 located in drive lugs 56 and 58. Continued rotation of the

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Input part 48 is now via the extensions 70 and 72 on the output part transfer. The pins 64, which are diametrically opposed to each other, receive the output clutch disc 66 axially between the pins 64.

Both powered advances are under ideal conditions 70 and 72 in the cutouts of the drive lugs 56 and 58. Due to manufacturing defects, it could happen that only one of the drive lugs is actually in engagement with a powered advance. To ensure that both drive lugs are fully engaged stand with the driven parts and thus transmit rotational force between the coupling members, the output shaft 44 can be rotated be mounted in a resilient bearing. As shown in Figs. 1 and 2, the shaft 44 is preferably supported in a holder 46, which is held by a resilient part 76. This means that a lack of alignment due to manufacturing defects Displacement of the flexible support part 76 made ineffective will.

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Claims (8)

Claims 1. Shaft coupling between the mower and the elevator part of a combine harvester, the mowing device being pushed in vertically with connecting parts located thereon into corresponding Connecting parts on the elevator part is coupled to this, characterized in that an output shaft (44) on the mowing device (4) and a drive shaft (42) on the elevator part (2) are provided with shaft coupling means (48, 50) which provide an automatic connection between the shafts (42, 44) simultaneously with the assembly of the mowing device (4) and the elevator part (2). 2. Shaft coupling according to claim 1, characterized in that the drive shaft (42) on the elevator part (2) and the output shaft (44) lie on the mowing device (4) transversely to the direction of movement of the mowing device (4) when the mowing device (4) is on the elevator part (2) is attached so that the shafts (42, 44) are brought into a coaxial position from an offset, parallel arrangement, when the connection between mowing device (4) and elevator part (2) has been made. 3. Shaft coupling according to claim 1, characterized in that the Shaft coupling means (48, 50) consist in that a pair are in axially extending thrusts (56, 58) are attached to the end of the drive shaft (42), which radially from the axis of the shaft (42) away, lie on diametrically opposite sides that a pair of lugs (70, 72) are located at the end of the output shaft (44), the 909882/0059 radially from the axis of the shaft (44), at diametrically opposite ones Pages lie, with the advances (70, 72) on the output shaft in the path of rotation of the advances (56, 58) on the drive shaft (42) suffice to be engaged with them when the shafts (42, 44) are coaxial for transmitting rotary power from the drive shaft (42) are brought together on the output shaft (44), and that a pair of pins (64) are provided which protrude from one of the shafts and which take effect when the shafts (42, 44) are aligned coaxially and the pairs of propellers (56, 58; 70, 72) meet should, so that with continued movement of the shafts (42, 44) for the purpose of coaxial alignment of one of the pins (64) a relative rotation causes between the shafts (42, 44), whereby the advance pairs come into a position in which they no longer meet and thus the coaxial position of the shafts (42, 44) can be assumed. 4. Shaft coupling according to claim 3, characterized in that the pair of pins (64) opposite the pair of protrusions (56, 58) is offset by 90 ° at one shaft end (42). 5. Shaft coupling according to claim 3, characterized in that the end of the output shaft (44) is mounted in a resilient holder (46, 76). 6. Shaft coupling according to claim 3, characterized in that the Vorstosspaare on discs (52, 66) are attached to the ends of the Shafts with the help of a hub (54, 68) is rotatably mounted. 7. Shaft coupling according to claim 6, characterized in that 909882/0059 one of the discs (52, 66) has a pair of ears (62) on which the Pins (64) are attached so that they encompass the other disk after axial alignment of the shaft coupling (48, 50). , 8. Shaft coupling according to claim 3, characterized in that the pins (64) are longer than the distance between the shaft ends (42, 44) with joined pairs (56, 58; 70, 72). 909882/0059 Blank page