AU2017204381A1 - Flexible hitch for agricultural machine drives - Google Patents

Flexible hitch for agricultural machine drives Download PDF

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Publication number
AU2017204381A1
AU2017204381A1 AU2017204381A AU2017204381A AU2017204381A1 AU 2017204381 A1 AU2017204381 A1 AU 2017204381A1 AU 2017204381 A AU2017204381 A AU 2017204381A AU 2017204381 A AU2017204381 A AU 2017204381A AU 2017204381 A1 AU2017204381 A1 AU 2017204381A1
Authority
AU
Australia
Prior art keywords
hitching
flexible
elements
flexible hitch
hitch according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2017204381A
Inventor
Pascal BARTHEN
Uwe Schäfer
Hervé Teitgen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walterscheid GmbH
Kuhn SAS
Original Assignee
GKN Walterscheid GmbH
Kuhn SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GKN Walterscheid GmbH, Kuhn SAS filed Critical GKN Walterscheid GmbH
Publication of AU2017204381A1 publication Critical patent/AU2017204381A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/72—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts
    • F16D3/74—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts the intermediate member or members being made of rubber or other rubber-like flexible material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/387—Fork construction; Mounting of fork on shaft; Adapting shaft for mounting of fork

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Agricultural Machines (AREA)

Abstract

Abstract Flexible hitch for agricultural machine drives, which can be rotatably driven around a rotation axis (D), comprising: 5 two hitching elements 1, 2, and at least one flexible element 3 which is positioned between the two hitching elements, 2, the at least one flexible element 3 being clamped axially between the two hitching elements 1, 2 by at least one tensioning device 4. 3252264v1 xD Ul

Description

The invention relates to a flexible hitch for agricultural machine drives, which can be rotatably driven around a rotation axis, with two hitching elements and a flexible ele5 ment mounted between the two hitching elements.
Such flexible hitches are generally known, for example from document DE 10 2006 053 282 A1. The flexible shaft coupling described therein has two coupling parts separated axially from each other, between which at least one elastomeric element is 0 provided which is vulcanised onto the front sides of the coupling parts which are facing each other. When the hitch is in operation, the coupling parts rotate along with the at least one elastomeric element connected thereto. Therefore, the elastomeric element is subjected to shear and torsion stresses. The elastomeric element also absorbs vibrations and oscillations. The connection between the elastomeric element 5 and the coupling parts must thus be arranged so that all of the peak torque for which the hitch is designed can be transferred.
Another flexible hitch is known from document GB 2 385 034 B. This also has two hitching elements which are axially separated from one another, with an elastomeric element placed between them. The elastomeric element is rigidly fastened to both hitching elements, it is for example sticked. In this case too, all of the torque is transmitted through the connection between the elastomeric element and the hitching elements. In case of failure of the elastomeric element, respectively the connections between the elastomeric element and the hitching elements, in order to prevent fail25 ure of the hitch, the hitch has a bolt which is passed through openings in the hitching elements and an opening in the elastomeric element. This bolt is secured to prevent axial withdrawing and has a certain amount of play within the openings, the bolt being surrounded by an elastic material. The bolt serves as a fail-safe and does not transfer any torque during normal operation of the flexible hitch, and is not tensioned in the axial direction too. The bolt is therefore unstressed during normal operation. The bolt only transmits torque between the two hitching elements if there is a failure of the elastomeric element or one of the connections between the elastomeric element and one of the hitching elements.
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2017204381 28 Jun 2017
The object of the present invention is to provide a compact flexible hitch with high torque capacity.
The object is solved by a flexible hitch according to Claim 1. Here, the at least one flexible element is clamped axially between the two hitching elements by at least one tensioning device. The flexible element can be mounted with an angular bias between the two hitching elements so that, in the unloaded state, the flexible element is already biased in one direction of rotation.
o
By clamping the flexible element, the damping properties can be adjusted by the clamping force of the tensioning device.
This flexible hitch can be used in agricultural machines. There, the flexible hitch can be mounted as part of the kinematic chain of the drive train. The agricultural machines could, for example, be rotary harrows, rotary tillers, shredders, stone crushers, mowing machines, feeder machines or similar.
The flexible element is preferably formed separately from the two hitching elements,
i.e. it is not bonded to or otherwise made integral with them. This allows the flexible element to be removed and replaced with different flexible elements with different rigidities and torque capacities. In principle, however, the flexible element can also be rigidly fastened to one or both of the hitching elements, for example if the flexible element takes the form of an elastomeric element which is stuck or vulcanised onto one or both of the hitching elements.
In one arrangement, the flexible hitch can have a centering pin which is coaxial with the rotation axis and is rigidly fastened to the first hitching element. The second hitching element and the flexible element each have a central drilling with which they are rotatably mounted on the centering pin. In this way, transverse forces acting on the second hitching element and/or the flexible element can be absorbed by the centering pin.
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2017204381 28 Jun 2017
In this case, a slide bearing bush can be provided through which the second hitching element is mounted on the centering pin. The slide bearing bush allows particularly good transmission of transverse forces onto the centering pin. Further, the slide bearing bush is especially suitable for the mounting of parts moving back and forth rela5 tive to each other, i.e. for the mounting of the second hitching element relative to the centering pin.
The second hitching element can be locked axially against the centering pin. This provides a fail-safe in the case of failure or breakage of the at least one tensioning 0 device. In this case, the flexible hitch is prevented from falling apart.
In the present case, the at least one tensioning device is preferably supported axially against both of the hitching elements, with the at least one tensioning device passing through an opening in the flexible element. This results in a compact design in which the tensioning devices do not take up any room in the radial envelope.
The at least one tensioning device can be supported against the hitching elements by compensating devices and so, to a limited extent, can be tilted transversely to the rotation axis relative to the hitching elements. This makes it more possible for the tensioning device to allow a limited amount of twisting of the hitching elements relative to each other around the rotation axis. Vibrations in the direction of rotation are absorbed by the flexible element and are released/enabled by the at least one tensioning device.
The hitching elements have front surfaces that face each other, with the flexible element clamped between them. The flexible element is therefore in friction contact with the front surfaces. The larger the construction of the front surfaces and corresponding contact surfaces of the flexible element, the higher is the torque that can be transmitted. As an alternative to the frictional connection between the front surfaces of the hitching elements and the flexible element, the flexible element can also be rigidly fastened to the hitching elements, for example by sticking or by vulcanisation.
The configuration of the flexible hitch provides for the at least one tensioning device
3252264v1
2017204381 28 Jun 2017 to pass through openings in the hitching elements. To allow the tensioning device to tilt transversely to the rotation axis, the openings to the flexible element can be extended conically or step-shaped. As another alternative, the openings can be given sufficient axial play to the at least one tensioning device, so that the at least one ten5 sioning device can be tilted inside the openings.
The at least one tensioning device can be supported axially on the sides of the hitching element opposite to the flexible element. The tensioning device is therefore under tensile stress.
o
Preferably, the flexible hitch has at least three tensioning devices which are distributed around the rotation axis of the flexible hitch. More tensioning devices can be provided depending on the required clamping force.
The at least one tensioning device can have a tension bolt, which is supported axially against the hitching elements by tensioning elements.
The tension bolt can take the form of a threaded bolt. Furthermore, the tensioning elements can also take the form of a screwhead which is rigidly fastened to the threaded bolt and a nut screwed onto the thread. They can therefore consist of a conventional screw with threaded bolt and screwhead, onto which a nut is screwed. The screw is supported with the screwhead on the first hitching element of the two hitching elements. Through the nut screwed onto the threaded bolt on one end remote from the screwhead, the screw is supported against a second of the two hitch25 ing elements. The screw is therefore passed through the openings in the hitching elements and in the flexible element until the head of the screw is supported on one of the two hitching elements. In this position, on the side of the flexible hitch opposite to the screwhead, the screw protrudes through the opening in the opposite hitching element, so that the nut can be screwed onto this end of the screw and the two hitch30 ing elements can be clamped together.
In another embodiment example, a threaded bolt without screwhead can also be provided, with nuts screwed onto the two opposite ends of the threaded bolt.
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In a further embodiment example, a tension bolt without thread can be provided, with locking rings held in grooves of the bolt at its both free ends. The locking rings constitute the tensioning elements with which the tension bolt is supported against the 5 hitching elements.
To allow the at least one tensioning device to be tilted, a compensating device can be used to allow at least one of the tensioning elements to be supported against the first or the second hitching element.
o
The compensating device can comprise a spherical washer which is housed in a spherical socket. The compensating device therefore comprises two washers, one of which is the spherical washer and the other is the spherical socket. The spherical washer has a convex spherical surface with which it fits into a concave spherical sur5 face in the spherical socket. The spherical washer and the spherical socket have a central opening through which the screw can be passed.
Alternatively, the tensioning element can also have a convex spherical contact surface facing towards the hitching element, which fits into a suitably concave spherical contact surface in the hitching element. It is also possible to have only one of the contact surfaces which works with a spherical washer or spherical socket.
The configuration of the flexible hitch can provide a spring assembly which holds the screwhead against the first hitching element. Alternatively, or additionally, a spring assembly can support the nut against the second hitching element.
In this case, the spring assembly has preferably at least one plate spring.
The at least one flexible element in the configuration of the flexible hitch can be an 30 elastomeric element.
In order to save space when intregrating the flexible hitch within a cardan shaft, one of the two hitching elements can have an articulation fork of a cardan joint. In this
3252264v1 way, the hitching element with articulation fork form part of the cardan joint, so that no other components are required to connect the flexible hitch to the cardan joint of a cardan shaft.
2017204381 28 Jun 2017
The other of the two hitching elements can be provided with a connecting element to connect the flexible hitch to a drive stud on a drive shaft or driven shaft.
The description below describes a preferred embodiment example of the flexible hitch with reference to the drawings, o
These show:
Figure 1: a part longitudinal section through a flexible hitch,
Figure 2: a longitudinal section through the flexible hitch in Figure 1 at one of the compensating devices, and
Figure 3: a longitudinal section through a cardan shaft with a flexible hitch shown in Figure 1.
Figure 1 shows a part longitudinal section through a flexible hitch. The flexible hitch can be rotated around a rotation axis D. The flexible hitch includes a first hitching element 1, a second hitching element 2 and a flexible element consisting of an elastomeric element 3. The both hitching elements 1, 2 accommodate the elastomeric ele25 ment 3 between them and are arranged next to each other along the rotation axis D. The first hitching element 1 and the second hitching element 2 are clamped together by a tensioning device 4 so that the elastomeric element 3 is clamped between them. The function of the flexible hitch is to dampen torque peaks and to compensate for non-axial or radial displacement. During work, the tensioning device 4 is tilted relative to the rotation axis D and produces axial compression of the elastomeric element 3.
The first hitching element 1 is provided with an outlet connector 6. The outlet connector 6 is essentially tubular in shape and is welded to a plate-shaped pressure el3252264v1
2017204381 28 Jun 2017 ement 60 of the first hitching element 1, and is therefore rigidly fastened to the latter. The outlet connector 6 is used to connect the first hitching element 1 to a drive stud of a drive shaft or driven shaft. To do this, the outlet connector 6 is provided with a centre drilling 25 with inner flutes 7, which can be joined with corresponding outer 5 flutes of the drive stud to form a non-rotatable connection. The inner flutes 7 and the outer flutes can take the form of a splined connection. A locking pin 8 in outlet connector 6 is used to ensure axial locking of outlet connector 6 on the drive stud.
The second hitching element 2 is provided with a centre drilling 9 and the elastomeric element 3 with a centre drilling 10, which are arranged coaxially with each other and with the rotation axis D and are further aligned with each other. The second hitching element 2 and the elastomeric element 3 are located with their centre drillings 9, 10 on a centering pin 11, which is arranged coaxially with rotation axis D and rigidly fastened to the first hitching element 1.
The second hitching element 2 is provided with an articulation fork 5 of a cardan joint which is not fully illustrated here. The articulation fork 5 is welded to a plate-shaped pressure element 61 of the second hitching element 2, and is therefore rigidly fastened to it. The articulation fork 5 has a centre drilling 12, which is arranged coaxially to the rotation axis D and by means of which the articulation fork 5 is positioned on the centering pin 11. The second hitching element 2 is arranged by means of a slide bearing bush 59 on the centering pin 11. A locking ring 13 is arranged in an outer groove 14 of the centering pin 11 and locks the second hitching element 2 in the axial direction on the centering pin 11.
Torque initiated for example through the outlet connector 6 is transmitted through the permanent connection of the outlet connector 6 with the pressure element 60 of the first hitching element 1 to the latter. Due to the clamping of the first hitching element 1 to the second hitching element 2 through the elastomeric element 3, the torque is transmitted through the elastomeric element 3 to the second hitching element 2 and therefore to the articulation fork 5. As further explained below, the tensioning devices 4 are designed so that the first hitching element 1 and the second hitching element 2 can perform limited rotational movements to compensate for torsional oscillations. In
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2017204381 28 Jun 2017 this way, the elastomeric element 3, the second hitching element 2 and the articulation fork 5 can rotate to a limited extent on the centering pin 11. Transverse forces acting on the second hitching element 2 or on the elastomeric element 3 transversely to the rotation axis D are thus absorbed by the centering pin 11.
The tensioning devices 4 are respectively spaced radially from the rotation axis D and are regularly distributed over the circumference. All the tensioning devices 4 are identical in design, so that the description of the tensioning device 4 shown at the top of the longitudinal section in Figure 1 also applies to all other tensioning devices, o
The tensioning device 4 includes a tension bolt in the form of a threaded bolt 15, with a screwhead 16 rigidly fastened to the latter and a thread 17. The threaded bolt 15 and the screwhead 16 together make up a conventional screw. A nut 18 is screwed onto the thread 17 of the threaded bolt 15. The pressure element 60 of the first hitch5 ing element 1 has an opening 19, the pressure element 61 of the second hitching element 2 has an opening 20, and the elastomeric element 3 has an opening 21, the openings 19, 20, 21 of the tensioning device 4 being aligned with each other. The threaded bolt 15 is passed through the openings 19, 20, 21. The threaded bolt 15 rests through the screwhead 16 against the first hitching element 1 on one side, which is opposite to the hitching element 2. The threaded bolt 15 passes through the openings 19, 20, 21 of the first hitching element 1, the second hitching element 2 and the elastomeric element 3, the threaded bolt 15 protruding from the side of the second hitching element 2 opposite to the first hitching element 1. The nut 18 is screwed onto the protruding end of the threaded bolt 15. The nut 18 is supported axially against the second hitching element 2.
The screwhead 16 is supported against the first hitching element 1 by a plate spring assembly 22, which comprises several plate springs, and by a compensating device 23. The nut 18 is supported against the second hitching element 2 by a compensat30 ing device 24, which is carried out the same way as the compensating device 23 at screwhead 16.
The compensating devices 23, 24 allow the threaded bolt 15 of the individual tension3252264v1
2017204381 28 Jun 2017 ing devices 4 to be tilted relative to the hitching elements 1, 2, to allow a limited rotation of the first hitching element 1 relative to the second hitching element 2. The two compensating devices 23, 24 are identical in structure, the compensating device 24 shown on the left of Figure 1 therefore being exemplarily described for both compen5 sating devices 23, 24 for the following text. In this regard, reference is made to Figure 2 which shows an enlarged part longitudinal section of the flexible hitch in the area of the compensating device 24.
The compensating device 24 is provided with a spherical washer 25 and a spherical socket 26, which are in contact with each other. The spherical washer 25 has a convex spherical surface 27 facing toward the spherical socket 26 and which enters and engages with a concave spherical surface 28 of the spherical socket 26. The convex spherical surface 27 and the concave spherical surface 28 have a geometric centre point M, around which the spherical washer 25 can be tilted relative to the spherical socket 26.
The spherical washer 25 has a centre opening 29 and the spherical socket 26 has a centre opening 30, the threaded bolt 15 passing through the centre openings 29, 30 of the spherical washer 25 and of the spherical socket 26.
The spherical washer 25 also has an annular surface 31 on which the nut 18 is supported axially. The spherical socket 26 has an annular surface 32 opposite to the annular surface 31 of the spherical washer 25, on which the second hitching element 2 is supported axially.
In this way, the threaded bolt 15 can be tilted around the centre M of the compensating device 23 relative to the second hitching element 2. This is necessary to allow a limited rotational movement of the first hitching element 1 relative to the second hitching element 2. In a starting position, a longitudinal axis L of the threaded bolt 15 is positioned parallel to rotation axis D. Due to a rotation of the first hitching element 1 to the second hitching element 2 around the rotation axis D, the threaded bolt 15 tilts around the centre M of the two compensating devices 23, 24 relative to the two hitching elements 1, 2 in such a way that the longitudinal axis L is tilted so that it
3252264v1
2017204381 28 Jun 2017 crosses the rotation axis D at a distance.
To prevent the threaded bolt 15 from jamming inside the openings 19, 20 of the two hitching elements 1, 2, sufficient radial play is provided between the openings 19, 20 5 of the hitching elements 1, 2 and the threaded bolt 15.
Additionally or alternatively, it can be provided that the opening 20 of the second hitching element 2 has a conical angle which opens out towards the first hitching element 1. In the same way, the opening 19 of the first hitching element 1 can have a 0 conical angle which opens out towards the second hitching element 2.
The pressure element 60 of the first hitching element 1 is plate-shaped and has an annular front face 33 which is arranged at right angles to the rotation axis D, which rests against a contact surface 35 of the elastomeric element 3 and is clamped to this contact surface 35. The pressure element 61 of the second hitching element 2 has an annular front face 34 which faces towards the first hitching element 1 and is also arranged at right angles to rotation axis D, and which rests against a corresponding contact surface 36 of the elastomeric element 3 and is clamped to this contact surface 36. The elastomeric element 3 also consists of a ring-shaped and plate-shaped element, so that a frictional connection is ensured around the entire circumference between the elastomeric element 3 and the two hitching elements 1, 2 through the front faces 33, 34 and the contact surfaces 35, 36. Alternatively, several elastomeric elements 3 can be arranged around the circumference between the two hitching elements 1, 2.
Figure 3 shows a cardan shaft with a flexible hitch according to Figures 1 and 2. The articulation fork 5, which is rigidly fastened to the second hitching element 2, is connected through a journal cross assembly 38 to another articulation fork 39 of a first cardan joint 37 so that torque can be transmitted through articulation the forks 5, 39 and these can be angled relative to each other. The other articulation fork 39 of the first cardan joint 37 is provided with a drilling 41, which is used to position it on an inner tube 42 and secure it with a tension pin 40 to prevent turning. As is generally known, the inner tube 42 is connected through a longitudinal displacement means to
3252264v1
2017204381 28 Jun 2017 an outer tube 43, so that torque can be transmitted between the inner tube 42 and the outer tube 43 and a longitudinal displacement is possible between the inner tube and the outer tube 43 along the rotation axis D.
The outer tube 43 is connected by an articulation fork 44 to the second cardan joint 45, the articulation fork 44 being connected through a journal cross assembly 38 to another articulation fork 47 of the second cardan joint 45, the second cardan joint 45 corresponding functionally to the first cardan joint 37. The articulation fork 47 opposite to the outer tube 43 is rigidly fastened to a connecting flange 48, through which the cardan shaft can be connected to a part of the drive train.
In principle, it is also possible for the first hitching element 1 to be rigidly fastened to a connecting flange 48 or another connecting element rather than to the outlet connector 6.
To provide protection from rotating parts, the cardan shaft is provided with a cardan shaft protection 49. This includes an outer protective tube 50, which is placed around the inner tube 42, and an inner protective tube 51, which is placed around the outer tube 43. As is generally known, the outer protective tube 50 and the inner protective tube 51 are kept longitudinally movable relative to each other. The outer protective tube 50 is connected through an adapter ring 52 to a protective bellows 53, the protective bellows 53 surrounding the first cardan joint 37.
The inner protective tube 51 is connected through an adapter ring 54 to a protective bellows 55, the protective bellows 55 surrounding the second cardan joint 45.
The two adapter rings 52, 54 are each pivot-mounted with slide rings 56, 57 on one of the articulation forks 39, 44 of the two cardan joints 37, 45. The adapter ring 54 on the second cardan joint 45 is provided with a chain 58, which can be fastened to a fixed component so that the adapter ring 54 and therefore the cardan shaft protection 49 are held to prevent turning.
In this specification, the terms “comprise”, “comprises”, “comprising” or similar terms
3252264v1 are intended to mean a non-exclusive inclusion, such that a system, method or apparatus that comprises a list of elements does not include those elements solely, but may well include other elements not listed.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.
2017204381 28 Jun 2017
3252264v1
2017204381 28 Jun 2017

Claims (15)

  1. Claims
    1. Flexible hitch for agricultural machine drives, which can be rotatably driven around a rotation axis, comprising:
    5 two hitching elements and at least one flexible element, which is positioned between the two hitching elements, wherein the at least one flexible element is clamped axially between the two hitching elements by at least one tensioning device, o
  2. 2. Flexible hitch according to claim 1, wherein the flexible hitch is provided with a centering pin which is coaxial with the rotation axis and is rigidly fastened to the first hitching element, and the second hitching element and the flexible element each are rotatably held on the centering pin by means of a central drilling.
  3. 3. Flexible hitch according to claim 2, wherein the second hitching element is held by a slide bearing bush on the centering pin.
  4. 4. Flexible hitch according to one of claims 2 or 3, wherein the second hitching
    0 element is locked axially against the centering pin.
  5. 5. Flexible hitch according to one of the previous claims, wherein the at least one tensioning device rests axially against the two hitching elements and the at least one tensioning device is passed through an opening in the flexible element.
  6. 6. Flexible hitch according to one of the previous claims, wherein the hitching elements have front surfaces that face each other, with the flexible element clamped between them.
    30
  7. 7. Flexible hitch according to one of the previous claims, wherein the at least one tensioning device is passed through openings in the hitching elements.
  8. 8. Flexible hitch according to one of the previous claims, wherein the flexible hitch
    3252264v1
    2017204381 28 Jun 2017 has at least three tensioning devices which are distributed around the rotation axis of the flexible hitch.
  9. 9. Flexible hitch according to one of the previous claims, wherein the at least one
    5 tensioning device has a tension bolt, which rests axially against the hitching elements by clamping elements.
  10. 10. Flexible hitch according to claim 9, wherein the tension bolt consists of a threaded bolt with thread, and the clamping elements consist of a screwhead
    0 which is rigidly fastened to the threaded bolt, and a nut which is screwed onto the thread.
  11. 11. Flexible hitch according to one of claims 9 or 10, wherein at least one of the clamping elements rests through a compensating device against the first hitch5 ing element or the second hitching element.
  12. 12. Flexible hitch according to claim 11, wherein the compensating device has a spherical washer which is held in a spherical socket.
    0
  13. 13. Flexible hitch according to one of claims 9 to 12, wherein at least one of the clamping elements rests through a spring assembly against the first hitching element or the second hitching element.
  14. 14. Flexible hitch according to one of the previous claims, wherein the at least one
    25 flexible element is an elastomeric element.
  15. 15. Flexible hitch according to one of the previous claims, whereinone of the two hitching elements has an articulation fork of a cardan joint.
    3252264v1
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    2017204381 28 Jun 2017 fit 2 3 If. Ί 60 Ά ' ' U Α/χί
    2/2
    2017204381 28 Jun 2017
    QQ
    LL
AU2017204381A 2016-06-29 2017-06-28 Flexible hitch for agricultural machine drives Abandoned AU2017204381A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16,305,789 2016-06-29
EP16305789.6A EP3263938B1 (en) 2016-06-29 2016-06-29 Flexible coupling for agricultural drives

Publications (1)

Publication Number Publication Date
AU2017204381A1 true AU2017204381A1 (en) 2018-01-18

Family

ID=56372863

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2017204381A Abandoned AU2017204381A1 (en) 2016-06-29 2017-06-28 Flexible hitch for agricultural machine drives

Country Status (3)

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EP (1) EP3263938B1 (en)
JP (1) JP2018004082A (en)
AU (1) AU2017204381A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167345A (en) * 2018-02-27 2018-06-15 安徽江淮汽车集团股份有限公司 A kind of truck drive shaft inputs Axile connection structure with rear axle
CN108361292A (en) * 2018-02-27 2018-08-03 安徽江淮汽车集团股份有限公司 A kind of transmission shaft and input Axile connection structure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188384B (en) * 1958-03-31 1965-03-04 Herwarth Reich Dipl Ing Elastic coupling
GB2385034B (en) 2002-02-11 2005-08-17 Nsk Steering Sys Europ Ltd Component coupling unit for steering column
DE102006053282A1 (en) 2006-11-02 2008-05-08 Stromag Ag Elastic shaft coupling, has sensor vulcanized in elastomer unit for detecting physical values of momentary operating or loading conditions, and detecting measuring values, where sensor is surrounded by elastomer material of elastomer unit
DE102010053419A1 (en) * 2010-11-29 2012-06-14 Willi Elbe Gelenkwellen Gmbh & Co. Kg Steering clutch for steering strand used in vehicle, has elastomer portion that is abutted against wall of fork head under radial bias
DE102011015024B3 (en) * 2011-03-25 2012-04-19 Audi Ag Safety coupling for a motor vehicle
DE102011079528B8 (en) * 2011-07-21 2014-05-08 Gkn Stromag Ag Elastomer coupling with two coupling parts

Also Published As

Publication number Publication date
JP2018004082A (en) 2018-01-11
EP3263938B1 (en) 2020-10-21
EP3263938A1 (en) 2018-01-03

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