• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The drawbar (4) for trailers according to the invention has a connection plate (14) and at least one coupling element (12) for coupling the trailer to a towing vehicle, wherein the connection plate (14) has at least one lower and one upper connection position for alternative attachment of the coupling element (12 ) has at different heights and the connection plate (14) between the lower and the upper connection position, a recess (15) for performing a propeller shaft (11) provides.
    公开号:CH714336A2
    申请号:CH01359/18
    申请日:2018-11-06
    公开日:2019-05-15
    发明作者:Pfanzelt Paul
    申请人:Pfanzelt Maschb Gmbh；
    IPC主号:
    专利说明:

    Description The invention relates to a drawbar for trailers.
    Drawbars are part of trailers, such as those used in agriculture or forestry. The connection to a towing vehicle takes place via a coupling element fastened to the drawbar, which is designed, for example, as a coupling eye or ball coupling. The coupling devices on towing vehicles are often attached at different heights, so that a height-adjustable coupling element on the drawbar is desirable in order to avoid unnecessary wear or damage to the coupled parts.
    From US 3,692,330 a height-adjustable coupling device for trailers is known, in which a coupling element can be fixed at several vertical connection positions of a connection plate.
    The invention is based on the object to realize the height-adjustable coupling element even in trailers with a propeller shaft.
    According to the invention this object is achieved by the features of claim 1.
    The drawbar for trailers according to the invention has a connecting plate and at least one coupling element for coupling the trailer to a towing vehicle, the connecting plate having at least one lower and one upper connecting position for alternative fastening of the coupling element at different heights, and the connecting plate between the lower one and the upper connection position provides a recess for the passage of a cardan shaft.
    Due to the inventive design, the coupling element can be attached both below and above the propeller shaft on the connection plate.
    According to a preferred embodiment of the invention, an adapter plate is provided between the connection plate and the coupling element, with which the coupling element is attached to the at least one lower or the at least one upper connection position of the connection plate. The connection plate can have a large number of hole patterns at different heights, the adapter plate having a hole pattern that corresponds to the hole patterns of the connection plate.
    Furthermore, the adapter plate can in particular be U-shaped with two side legs, the two side legs having holes for attachment to the connection plate. The adapter plate, with its side that is open due to the U-shaped configuration, can be aligned in the direction of the cardan shaft, so that the recess in the connecting plate is not covered or is hardly covered. The freedom of movement of the cardan shaft is preserved.
    So that the cardan shaft has enough space in the recess of the connection plate with a relative movement of the trailer and towing vehicle, the extent of the recess of the connection plate corresponds in the vertical direction at least 3 times the diameter of the drive shaft and in the transverse direction at least twice the diameter of the drive shaft. Furthermore, it can be provided that the mounted adapter plate projects vertically beyond the connection plate.
    Further embodiments of the invention will be explained in more detail with reference to the following description of an embodiment and the drawing.
    In the drawing shows
    1 is a schematic side view of a trailer with a drawbar according to the invention,
    Fig. 2 is a three-dimensional representation of the drawbar with a coupling element attached in an upper connection position and
    Fig. 3 is a three-dimensional representation of the drawbar with a coupling element attached in a lower connection position.
    Fig. 1 shows a trailer 1 for forestry operations with a vehicle frame 2, a chassis 3 of a drawbar 4, a loading space 6 formed by stanchions 5 and a loading crane 7. The drawbar 4 is shown enlarged in FIGS. 2 and 3 , In particular, this can be a steering drawbar which is mounted on the vehicle frame 2 so as to be pivotable about a vertical axis.
    To stabilize the trailer 1 during the operation of the loading crane 7, two lateral supports are also provided, which, like the loading crane 7, can be operated via a control panel 10. Both the supports 9 and the loading crane 7 are actuated by a hydraulic system, the hydraulic pressure required for this being generated by means of an articulated shaft 11 that can be coupled to a towing vehicle and a hydraulic pump (not shown in more detail).
    CH 714 336 A2 At the front end 4a of the drawbar 4, at least one coupling element 12, 13 is provided for coupling the trailer to a towing vehicle. In Fig. 1 both coupling elements are shown, although in practice only one of the two coupling elements will usually be installed.
    The drawbar 4 is explained in more detail with reference to FIGS. 2 and 3. At the front end 4a of the drawbar 4, a connection plate 14 is provided, which in the exemplary embodiment shown is rectangular and is formed with a central recess 15 for the drive shaft 11. The drawbar is hollow, so that the cardan shaft 11 runs inside the hollow drawbar 4 and protrudes through the recess 15 at the front end 4a.
    In the exemplary embodiment according to FIG. 2, the coupling element 12, which is designed here as a towing eye, has a flange plate 12a with which it is attached to the connection plate 14 at an upper connection position. An adapter plate 16 is provided between the connection plate 14 and the coupling element 12, the coupling element 12 being fastened to the adapter plate 16 by means of screws 17. The adapter plate 16 is U-shaped with two lateral legs 16a, 16b, the two lateral legs 16a, 16b having bores 16c for attachment to the connecting plate 14.
    So that the coupling element 12 can be mounted at different heights above the floor on the connection plate 14, the connection plate 14 has a plurality of bores 14a at different heights, which are formed here by two rows of holes on the side. The holes 16c of the adapter plate 16 result in a hole pattern which corresponds to the hole patterns of the connection plate 14 which result from the various holes 14a, so that the adapter plate 16 can be fastened to the connection plate 14 with the coupling element 12 at different height positions. Screws which interact with nuts or with internal threads of the bores 14a of the connection plate 14 are preferably used as the fastening.
    So that the propeller shaft 11 has enough freedom of movement in the recess 14 of the connecting plate 14 with any relative movements between the towing vehicle and trailer 1, the connecting plate 14 is significantly wider than the flange plate 12a of the coupling element 12. The width of the coupling element or its flange plate 12a is less than 0.5 times the width of the connection plate. The extent of the recess 15 of the connecting plate 14 corresponds in the vertical direction to at least 3 times the diameter of the cardan shaft and in the transverse direction at least twice the diameter of the cardan shaft 11. In this way, the cardan shaft 11 has sufficient play in the recess in the case of relative movements between the towing vehicle and the trailer 1 15th
    In the assembled state of the adapter plate 16, the side of the adapter plate 16 which is open due to the U-shaped configuration is oriented in the direction of the drive shaft 11.
    In the illustrated embodiment, the mounted adapter plate 16 is in the vertical direction beyond the connecting plate 14. However, it would also be conceivable to fasten the adapter plate 16 downward by at least one hole on the connection plate 14.
    2 above the articulated shaft 11 is attached to the connecting plate 14, the embodiment of FIG. 3 shows an arrangement of the coupling element 13 below the articulated shaft 11. For this purpose, the adapter plate 16 is simply turned over so that the side legs 16a, 16b and thus the open side of the adapter plate 16 point upwards. Otherwise, the coupling element 13 is screwed to the adapter plate 16 with its flange plate 13a. 3, the coupling element 13 can be arranged, for example, at a height above the floor of 400 to 700 mm. 2, the coupling element is at a height of approx. 800 to 1200 mm.
    权利要求:
    Claims (9)
    [1]
    claims
    1. drawbar (4) for trailers (1) with a connecting plate (14) and at least one coupling element (12, 13) for coupling the trailer (1) to a towing vehicle, the connecting plate (14) having at least one lower and one upper connecting position for the alternative fastening of the coupling element (12, 13) at different heights, characterized in that the connecting plate (14) has a recess (15) for the passage of a cardan shaft (11) between the lower and the upper connecting position.
    [2]
    2. Drawbar according to claim 1, characterized in that between the connection plate (14) and the coupling element (12, 13) an adapter plate (16) is provided with which the coupling element (12, 13) at the lower or the upper connection position of the Connection plate (14) is attached.
    [3]
    3. Drawbar according to claim 1, characterized in that the connecting plate (14) for fastening the coupling element (12, 13) has a plurality of hole patterns at different heights.
    [4]
    4. Drawbar according to claim 2 and 3, characterized in that the adapter plate (16) has a drilling pattern corresponding to the drilling patterns of the connecting plate (14).
    [5]
    5. Drawbar according to claim 1, characterized in that the width of the coupling element (12, 13) in the region of its attachment to the adapter plate (16) is less than 0.7 times the width of the connecting plate (14).
    CH 714 336 A2
    [6]
    6. Drawbar according to claim 2, characterized in that the adapter plate (16) is U-shaped with two lateral legs (16a, 16b), the two lateral legs (16a, 16b) bores (16c) for attachment to the connecting plate (14).
    [7]
    7. Drawbar according to claim 2, characterized in that the adapter plate (16) is U-shaped in plan view, so that the coupling element (12, 13) has an open side with which it is aligned in the direction of the drive shaft (11) ,
    [8]
    8. Drawbar according to claim 1, characterized in that the extent of the recess (15) of the connecting plate (14) in the vertical direction corresponds to at least four times the diameter of the cardan shaft (11) and in the transverse direction at least twice the diameter of the cardan shaft (11).
    [9]
    9. Drawbar according to claim 2, characterized in that the adapter plate (16) protrudes in the assembled state in the vertical direction over the connecting plate (14).
    类似技术:
    公开号 | 公开日 | 专利标题
    DE7113798U|1971-07-15|TRACTOR
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    DE202014001054U1|2014-04-04|Sprayer for an agricultural vehicle
    DE2738951A1|1979-03-08|ADJUSTMENT DEVICE FOR THE LOWER ARM OF A THREE-POINT HITCH
    AT516189B1|2017-02-15|Drawbar for a trailer
    EP3639652A1|2020-04-22|Forest trailer
    DE3004218A1|1981-08-27|Height adjustable articulated coupling - has locking levers to secure normal and raised height
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    EP3025570B1|2019-03-20|Pulled agricultural machine
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    EP3222464A1|2017-09-27|Frame system for motor vehicle structures
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    DE102017125943A1|2019-05-09|Receiving device for a device for connection to lower links of a tractor lifting gear
    EP3050607A1|2016-08-03|Model tractor with a coupling for holding at least one attachment and/or trailer
    Kirchhoff2020|Fabian Georgi: Managing Migration? Eine kritische Geschichte der Internationalen Organisation für Migration |. Berlin: Bertz+ Fischer 2019, 448 Seiten
    DE1290830B|1969-03-13|Fastening the cab of trucks to the vehicle frame
    DE1937171C3|1976-12-16|Stabilization device for the connection of motor vehicle and trailer
    DE3920578A1|1991-01-03|COUPLING SYSTEM FOR COUPLING DEVICES TO ARMED TRACTORS
    DE102013112315A1|2015-05-13|Commercial vehicle chassis in longitudinally adjustable design
    DE10030263A1|2002-01-31|System for connecting tractor and agricultural machine comprises drawbar fitted with a detachable coupler which has aperture through drive for machine passes and coupling ring arranged eccentrically with respect to aperture
    DE7519607U|1975-10-30|TOOL RAIL FOR ACCOMMODATION OF A VARIETY OF WORK EQUIPMENT FOR IN-LINE CULTURE
    同族专利:
    公开号 | 公开日
    DE102017126211A1|2019-05-09|
    AT520604A1|2019-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3692330A|1971-06-11|1972-09-19|Ray E Kendall|Vertically adjustable two bar assembly|
    DE10030263A1|2000-06-20|2002-01-31|John Deere Fabriek Horst Bv|System for connecting tractor and agricultural machine comprises drawbar fitted with a detachable coupler which has aperture through drive for machine passes and coupling ring arranged eccentrically with respect to aperture|
    DE102010049259B4|2010-10-25|2012-06-06|Hogha Gmbh|drawbar|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017126211.3A|DE102017126211A1|2017-11-09|2017-11-09|Drawbar for trailers|
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