US3741027A - Driving transmission for opening and closing sliding roof parts - Google Patents

Driving transmission for opening and closing sliding roof parts Download PDF

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Publication number
US3741027A
US3741027A US00087154A US3741027DA US3741027A US 3741027 A US3741027 A US 3741027A US 00087154 A US00087154 A US 00087154A US 3741027D A US3741027D A US 3741027DA US 3741027 A US3741027 A US 3741027A
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US
United States
Prior art keywords
drive shaft
coupling
drive
shaft
spring means
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.)
Expired - Lifetime
Application number
US00087154A
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English (en)
Inventor
F Schneider
M Oerter
R Walser
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.)
Rheinstahl AG
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Rheinstahl AG
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
Priority claimed from DE19691956136 external-priority patent/DE1956136C/de
Application filed by Rheinstahl AG filed Critical Rheinstahl AG
Application granted granted Critical
Publication of US3741027A publication Critical patent/US3741027A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D39/00—Wagon or like covers; Tarpaulins; Movable or foldable roofs
    • B61D39/006—Opening and closing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19251—Control mechanism
    • Y10T74/19256—Automatic
    • Y10T74/19274—Automatic torque responsive

Definitions

  • a transmission or device for opening and closing sliding roof parts, particularly sliding roofs of freight cars comprises a cable drum mounted for rotation about a horizontal axis and arranged for each sliding roof part on a cross'connection transverse to the longitudinal direction of;,the freight car.
  • a cable is secured to each roof part and the free ends of each cable are secured on the cable drum and are mounted such that one cable is wound when the other is unwound.
  • the cables could also be connected together and the connected cable arranged to surround the cable drum at'least once.
  • a hand crank is connected to each cable drum through transmission means which includes an engaging and a disengaging clutch and having at least a two ratio gear ing which automatically adjusts itself to the force expended on the crank.
  • the present invention is particularly applicable for opening and closing sliding roof parts particularly on railroad freight cars.
  • Such-freight cars include two side wall upper booms of the car box frame which are connected with each other by at least one cross connection and the sliding roof comprises at least two parts which are raised for displacement by an amount at least corresponding to their thicknesses.
  • a cable drum mounted forrotation about a horizontal axis is arranged transverse to the longitudinal direction of the car for each sliding roof part and cams are provided, at least on one side of each drum, which extend in a closed position of the sliding roof parts to a finger bar arranged ontheir underside of the parts. The cams move during the rotation of the respective cable drum in an opening direction under the finger, bar and lift the sliding roof part.
  • the two free ends of the connecting cables are so secured on a cable drum that one cable is wound the other is unwound or the two cables are connected with each other and the one part cable thus formed surrounds the cable drum' at least once.
  • Each cable drum is turned by a hand crank which is operated from the bottom through a transmission means which can be engaged and disengaged through a clutch.
  • the invention provides a transmission means with a gearing which reduces the necessary force during the raising of the roof parts and the necessary number of revolutions during the horiz'ontal displacement. This is achieved by providing at least a two ratio gear which adjusts itself automatically to the force expended on the hand crank located in the transmission means between the hand crank and the associated drum.
  • the gear engages in a manner to provide a minimum amount of movement in a'rest position, and during the horizontal displacement when the roof parts are locked in their closed position. When the roof parts are raised, the gearengages in a manner providing for a force saving transmission.
  • a drive shaft is connected non-rotationally with the other transmission means arranged on the freight car.
  • the gearing advantageously comprises four sprocket or gear wheels of different sizes corresponding to the required gear ratio and which are arranged in pairs on two shafts.
  • the transmission includes an arrangement between the rotatable hand wheel and the gearing which comprises a clutch having two clutch engaging portions.
  • the first coupling portion of the clutch is connected between the drive shaft and the first gearing and a second coupling is connected between the drive shaft and the second gearing.
  • the arrangement includes first spring biasing means biasing the first coupling into an engaged position and second springbiasing means for biasing the second coupling into an engagement position but which is held in an ineffective position when the driven shaft is in a loaded or driving'condition.
  • the two couplings are advantageously in the form of sleeve members having coupling engagingportions or claws and they are dimensioned so that they may be telescoped one within the other.
  • the interengaging portions are chamfered in the form of a truncated pyramid.
  • theone which is engaged with the gear for saving speed preferably includes a straightfor chamfered dove tail interconnection.
  • a device for opening and closing sliding roof parts which includes a hand crank connected to a cable drum for a cable which is adapted to be connected to a roof part to be moved, and transmission means in the form of an engaging'and disengaging clutch which has at least two selectable ratios of gear connection for driving the associated cables, and which automatically adjusts itself to the force expendedon the hand crank.
  • a further object of the invention is to provide a driving transmission particularly for opening and closing sliding roof parts which includes a rotatable drive shaft driving a driven shaft for the cables through a selective one of at least two separate gear connections and with a clutch coupling connected between the drive shaft and the gearing which includes two interengageable telescopic coupling parts with spring means for biasing one of the parts into an effective position and holding the other part out of an effective position, and which permits disengagement of the first part after the unloading of the driven shaft and allows subsequent engagement of the other part.
  • a further object of the invention is to provide a driving transmission which is simple in design, rugged in construction, and economical to manufacture.
  • FIG. 1 is a side elevational view of a transmission gearing constructed in accordance with the invention
  • FIG. 2 is a section taken along the line IIII of FIG. 1;
  • FIG. 3 is a section taken along the line III-III of FIG. 1.
  • the invention embodied therein, comprises a driving transmission, particularly for opening and closing sliding roof parts which, in the embodiment shown, includes a driving hand wheel 16 which is affixed to a drive shaft 76 for rotating said shaft.
  • the driving shaft 76 is connected non-rotatably through sprocket wheels 77, chains 78 and sprocket wheel 50 with a second hand wheel 52 which is adapted to be located at another location of a railroad freight car (not shown).
  • the apparatus also includes a driven shaft 79 having a sprocket 92 which drives a chain 78 which is adapted to be connected, either directly or through an intermediate gearing, for the selective operation of one or the other of two roof parts associated with the actuating device for the moving of the sliding roof parts.
  • the separate sprocket 92 could also be provided behind each hand wheel 16.
  • Transmission means extending between the hand wheel 16 and the driven shaft 79 includes axially spaced sprocket wheels 80 and 83 which alternatively drive the sprockets 82 and 83 on the driven shaft 79 through respective chains 84 and 85 to provide two selectable drive speed ratios.
  • the sprockets 80 and 81 are freely rotatable around the shaft 76 and have on their sides facing each other coupling claws or coupling parts 80a and 81a.
  • the sprocket wheels 82 and 83 are fixed to their associated driven shaft 79 for rotation therewith.
  • the sprocket wheels 80 and 81 around the drive shaft 76 are associated with clutch means including a first clutch member or bush 86 and a second clutch member or bush 87.
  • These bushes 86 and 87 carry coupling claws 86a and 80a, respectively, which are chamfered in the form 'of a truncated pyramid and the coupling claws 87a and 81a of the clutch bushing 87 and of the free sprocket 81 are straight.
  • the inside and outside diameters of the first and second clutch bushes 86 and 87 are so dimensioned at least on the sides facing each other that they can be telescoped up to a stop.
  • the bushes 86 and 87 include an axially elongated slot through which a wedge 88 is engaged and which provides a driving connection between the bushes 86 and 87 and drive shaft 76.
  • the slots in the bushes 86 and 87 and in the drive shaft 76 are longer than the width of the wedge 88 so that the bushes 86 and 87 are axially displaceable and can be moved relatively in axial directions.
  • a compression spring 89 is arranged around the bush 86 and bears at the bush 86 at its one end and the bush 87 at its opposite end.
  • the compression spring 89 tends to spread the bushes 86 and 87 apart and constitutes a spring biasing means for biasing the bush 87 into an engaged position when the bush 86 in in a disengaged position.
  • the drive shaft 76 is partly hollow and in the hollow portion is arranged the tension spring 91 which is secure to the wedge 88 and which can be adjusted by means of an adjusting screw 90. It provides a biasing means for biasing the bush 86 into an engaged position.
  • the force of the compression spring 91 and the force of the tension spring 91 are so selected and adjust that the coupling claws 86a of the clutch bush 86 engage in the unloaded gear.
  • the claws 87a of the bush 87 which carries the sprocket wheel are disengaged from the claws 81a of the sprocket wheel 81. If the hand wheel 16 is now turned the transmission in such that the drive is from the drive shaft 76, the clutch bush 86, the sprocket wheel 80, the chain 84 to the sprocket wheel 82 and the drive shaft 79 and to the sprocket wheel 92.
  • the hand wheel 52 which is connected to the sprocket 77 turns freely with it.
  • the bush 86 with the sprocket I 80 will remain engaged until the wedge effect of the coupling claws 86a and 80a exceeds the contact pressure exerted by the tension spring 91.
  • the force of the tension spring 91 is adjusted by the adjusting screw so that engagement takes place during the raising of the roof parts when the driven shaft 79 is loaded.
  • a driving transmission particularly for opening and closing sliding roof parts, comprising a rotatable drive shaft, a rotatable driven shaft adapted to be connected to a part to be moved, first and second drive gear means each with engaged toothed wheels carried by said drive shaft, a first coupling connected between said drive shaft and said first drive means, a second coupling connected between said drive shaft and said second drive gear means, operating means connected to said drive shaft to rotate said drive shaft, first spring means biasing said first coupling into an engaged position, second spring means biasing said second coupling toward an engaged position, said first spring means being connected to said second coupling and holding said second coupling in a position in which said second spring means is ineffective when said driven shaft is in a loaded driving condition and when said operating means is rotating said drive shaft.
  • a driving transmission including first and second driven sprockets carried on said driven shaft, said first and second toothed wheels carried by said drive shaft including separate first and second drive sprockets and chain means extending between respective first drive sprocket and said second drive sprocket and said second driven sprocket.
  • a driving transmission particularly for opening and closing sliding roof parts, comprising a rotatable drive shaft a rotatable driven shaft adapted to be connected to a part to be moved, first and second drive gear means carried by said drive shaft, a first coupling connected between said drive shaft and said first drive means, a second coupling connected between said drive shaft and said second drive gear means, operating means connected to said drive shaft to rotate said drive shaft, first spring means biasing said first coupling into an engaged position, second spring means biasing said second coupling toward an engaged position, said first spring means being connected to said second coupling and holding said second coupling in a position in which said second spring means is ineffective when said driven shaft is in a loaded driving condition and ,when' said operating means is rotating said drive shaft, said first and second drive gear means comprising respective first and second gears carried by said first and second couplings respectively.
  • first and second gears comprise driving sprockets.
  • a driving transmission particularly for opening and closing sliding roof parts, comprising a rotatable drive shaft, a rotatable driven shaft adaptedto be connected to a part to be moved, first and second drive gear means carried by said drive shaft, a first coupling connected between said drive shaft and said first drive means, a second coupling connected between said drive shaft and said second drive gear means, operating means connected to said drive shaft to rotate said drive shaft, first spring means biasing said first coupling into an engaged position, second spring means biasing said second coupling toward an engaged position, said first spring means being connected to said second coupling and holding said second coupling in a position in which said second spring means is ineffective when said driven shaft is in a loaded driving condition and when said operating means is rotating said drive shaft, said first and second couplings comprising telescopic sleeve members rotatably mounted on said drive shaft.
  • said first spring means comprises a spring having one end anchored at a fixed location, said first and second couplings comprising telescopic sleeve members having each an axially elongated slot, a wedge member extending through the slots of each of said couplings and engaged with the opposite end of said spring.
  • a driving transmission particularly for opening and closing sliding roof parts, comprising a rotatable drive shaft, a rotatable driven shaft adapted to be connected to a part to be moved, first and second drive gear means carried by said drive shaft, a first coupling connected between said drive shaft and said first drive means, a second coupling connected between said drive shaft and said second drive gear means, operating means connected to said drive shaft to rotate said drive a and holding said second coupling in a position in which drive gears.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
US00087154A 1969-11-07 1970-11-05 Driving transmission for opening and closing sliding roof parts Expired - Lifetime US3741027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691956136 DE1956136C (de) 1969-11-07 Vorrichtung zum Öffnen und Schließen eines Hubschiebedaches, insbesondere an Eisenbahngüterwagen

Publications (1)

Publication Number Publication Date
US3741027A true US3741027A (en) 1973-06-26

Family

ID=5750458

Family Applications (1)

Application Number Title Priority Date Filing Date
US00087154A Expired - Lifetime US3741027A (en) 1969-11-07 1970-11-05 Driving transmission for opening and closing sliding roof parts

Country Status (14)

Country Link
US (1) US3741027A (fi)
AT (1) AT310796B (fi)
BE (1) BE757852R (fi)
BG (1) BG17480A4 (fi)
CA (1) CA922925A (fi)
ES (1) ES384786A2 (fi)
FI (1) FI51921B (fi)
GB (1) GB1272199A (fi)
HU (1) HU163141B (fi)
NO (1) NO126307B (fi)
RO (1) RO56047A7 (fi)
SE (1) SE367975B (fi)
SU (1) SU414777A3 (fi)
YU (1) YU32581B (fi)

Also Published As

Publication number Publication date
SU414777A3 (fi) 1974-02-05
BE757852R (fr) 1971-04-01
FI51921B (fi) 1977-01-31
ES384786A2 (es) 1973-03-16
RO56047A7 (fi) 1974-02-01
DE1956136A1 (de) 1971-12-09
CA922925A (en) 1973-03-20
NO126307B (fi) 1973-01-22
HU163141B (fi) 1973-06-28
YU32581B (en) 1975-02-28
BG17480A4 (fi) 1973-11-10
GB1272199A (en) 1972-04-26
AT310796B (de) 1973-10-10
SE367975B (fi) 1974-06-17
YU254870A (en) 1974-08-31

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