CA1150567A - Entrance arrangement for an urban or suburban vehicle, typically a rail vehicle - Google Patents
Entrance arrangement for an urban or suburban vehicle, typically a rail vehicleInfo
- Publication number
- CA1150567A CA1150567A CA000376104A CA376104A CA1150567A CA 1150567 A CA1150567 A CA 1150567A CA 000376104 A CA000376104 A CA 000376104A CA 376104 A CA376104 A CA 376104A CA 1150567 A CA1150567 A CA 1150567A
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- cover
- skirt
- vehicle
- levers
- 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
Links
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to an entrance arrangement for an urban or suburban vehicle, typically a rail vehicle, with two fixed steps and skirt member capable of turning about a skirt shaft lying parallel to the vehicle longitudinal axis and horizontal, said skirt member supporting a step on its inside as well as a step cover closing t he entrance arrangement at the top, said step cover being foldable, guide cams being provided on the foldable step cover, said guide cams being in sliding contact with cam discs, the complete step cover being swung towards the inside of the vehicle behind the fixed steps, by means of support levers and a cover shaft connected to the support levers and lying horizontal and parallel to the vehicle longitudinal axis, one of the levers being connected in a non-rotating manner and the other two lvers in a rotating manner to the cover shaft.
The invention relates to an entrance arrangement for an urban or suburban vehicle, typically a rail vehicle, with two fixed steps and skirt member capable of turning about a skirt shaft lying parallel to the vehicle longitudinal axis and horizontal, said skirt member supporting a step on its inside as well as a step cover closing t he entrance arrangement at the top, said step cover being foldable, guide cams being provided on the foldable step cover, said guide cams being in sliding contact with cam discs, the complete step cover being swung towards the inside of the vehicle behind the fixed steps, by means of support levers and a cover shaft connected to the support levers and lying horizontal and parallel to the vehicle longitudinal axis, one of the levers being connected in a non-rotating manner and the other two lvers in a rotating manner to the cover shaft.
Description
6~
The invention relates to an entrance arrangement for an urban or suburban vehicle, typically a rail vehicle, with two fixed steps and a skirt member capable of turning about a skirt shaft Iying parallel to the vehicle longitudinal axis and horizontal, said skirt member supporting a step on its inside as well as a step cover closing the entrance arrangement at the top, said step cover being foldable, guide cams being provided on the foldable step cover, said guide cams being in sliding contact with cam discs, the complete step cover being capable of being swung towards the inside of the vehicle behind the 10 fixed steps, by means oF support levers and a cover shaft connected to the support levers and Iying horizontal and parallel to the vehicle longitudinal axis, one of the levers being connected in a non-rotating m anner and the other two levers in a rotating manner to the cover shaft as in German Patent Specification 26 20 683, The German Patent Specification 26 20 683 disclosed a pivoted and folding type steo for the entrance of rail vehicles permitting the step to be adiusted to match different levels of platforms as used in the operating area of urban and suburban vehicles. In addition to at least 20 one fixed step, a skirt member pivotable about a shaft and a pivoting and, simultaneously, folding step cover are provided in the entrance area for this purpose. The skirt member and step cover are connected by gearing means so that the step cover is pivoted inwardly, whi le the skirt member is swung out. In this pivoted position, lower platforms can be served, the initial position being intended for platforms which are level- with the floor.
The object of the invention is to further improve this entrance arrangement in a manner that the actuating mechanism required for it is substantially relieved by balancing the gravity forces due to the weight 30 of the step cover and skirt member and, simultaneously, the complete system is always maintained in a safe condition if the actuating mechanism should fai 1.
This object is achieved in that the cover shaft is indirectly operable by a pneumatic piston/cylinder unit, one cylinder thereof being pivoted with one end in a bearing flexibly to a casing of the entrance system and the piston rod extending from the other end actuating the skirt shaft via a balance lever which is non-rotatably connected to the skirt shaFt, in that said skirt shaft actuates the cover shaft Iying parallel to the skirt shaft via gears arranged opposite to the piston/cylinder unit, in that a spring or springs are provided for balancing the weight of the skirt member attached to the skirt shaft as wel I as the weight of the step cover which is non-rotatably fastened to the cover shaft, and in that the springs are connected at one end ~0 each via balance levers to the skirt shaft or cover shaft respectively in a non-rotating manner, whereas the other end of the springs is connected via adjusting screws to the casing of the entrance system.
Due to the actuation according to the invention, the piston/cylinder unit is relieved efFectively of forces due to the weight.
The piston/cylinder unit only need to overcome the friction forces.
Not only is energy saved in this manner, the sizes of the piston/cylinder unit and the force-transmitting elements are also minimized so that, apart from a saving of space, there is also a reduction in manufacturing costs. The adiusting screws make it easy for the maintenance and 20 service personnel to effect the balance of the weight.
A typical embodiment of the invention is illustrated in the drawings in which:
Figure 1 is a front view of an entrance arrangement with half of the ski rt member removed;
Figure 2 shows the actuating side part of the entrance arrangement with the skirt member swung out (section 11-11 in Figure l);
Figure 3 is a section along the line 111-111 with the piston/cylinder unit and the spring to balance a skirt member; and Figure 4 is a section along the line IV-IV with a spring to 30 balance a step cover.
Figure I shows an entrance arrangement with a step cover 3 and skirt member 13 which are pivotably supported on a cover shaft 2 and skirt shaft 12 respectively. For ease of reference, the left-hand half of the figure is drawn with the step cover in its open position.
356~
Both shafts are actuated by a pneumatic piston/cylinder unit 50 (Figures 2, 4) which, by means of a balance lever 51 connected non-rotatably to the skirt shaFt 12 operates a gear 52 opposite the piston/cylinder unit which gear meshes with a second gear 53 which is non-rotatably fitted to the cover shaft 2. The cover shaft 2 operates the step cover 3 via levers 1 and 31 respectively. As a result, the step cover 3 and the skirt member 13 are functionally connected so that the skirt member 13 will fold outwardly when the step cover 3 is pivoted inwardly. In order to relieve the piston/cylinder unit 50 and the gears 10 52, 53 of the not inconsiderable gravity forces, springs 547 55a, 55b are associated according to the invention with each the skirt shaft 12 and the cover shaft 2. The step cover 3 is provided at its two ends with spring systems to balance its gravity forces, parts of the spring system being designated for reasons of symmetry with the letters a and b in addition to the reference numerals. These springs are non-rota-tably connected via the balance levers 54, 56a, 56b to the shirt shaft 12 or the cover shaft 2 respectively with the lever 56a, 56b advanta-geously forming a unit with the levers 1 and 31 respectively, the lever 1 and lever 31 respectively being non-rotatably fitted on the cover shaft 20 2 or vice versa.
Figure 2 shows the pneutmatic piston/cylinder unit 50 serving as the actuator, the piston/cylinder unit being rotatably-supported in a bearing system 58 arranged in a case 57 of the entrance system. A
piston rod 59 of the piston/cylinder unit 50 engages the balance lever 51 which is non-rotatably connected to the skirt shaft 12. Pivoted to the balance lever 51 is also a pre-loaded spring 54 serving to balance the weight of the skirt. An adjusting screw 62 (Figure 3) is provided t o adiust the pre-load, the adiusting screw 6Z bearing against the case 57. This adiusting screw 52 enables the gravity force of the skirt 13 30 to be fully compensated. In order to compensate the gravity force of the cover shaft 2 (Figure 4) a second spring 55a is associated with the balance lever 56a. The balance lever 56a advantageously forms an integral unit with the lever 1, the lever 1 or lever 31 respectively being connected non-rotatably with the cover shaft 2. The secand ;s;Dring '7 55a is capable of being pre-loaded by a defined amount by means of an adjusting screw 63a.
A detai led representation oF the spring 54 and the piston/cylinder unit 50 is reproduced in Figure 3. The cross-section of the entrance system shows the skirt shaft 12 to which is fitted the balance lever 51 in a non-rotating manner. Engaging the balance lever 51 are the spring 54 and the piston rod 59 of the piston/cylinder unit 50. V\~hen the piston/cylinder unit 50 is operated, the balance Iver with the skirt shaft 12 attached to it will be turned. The gravity force 10 of the skirt member 13 will be compensated by the spring 54 which is subjected to a controllable degree of pre-load. Control of the pre-load is by means of an adjusting screw 62 which engages a segment 60 which is rotatable in the case 57, the spring 54 being in turn pivoted to the segment 60. The adjusting screw 62 bears against the case 57. With the gear 52 or 53 (Figure 1) removed, it is easy for the fitter or maintenance crew by turning the adjusting screw 62 to subject the spring 54 to a pre-load so that the gravity force of the skirt member 13 is balanced and, in addition, the skirt member is prevented from folding away downwards if the piston/cylinder unit 50 should fail. In 20 other words, it also provides a safety function.
Figure 4 shows the weight balance system of the step cover 3. Furthermore, the complete mechanism of the parts which are rotatable about the cover shaft 2 and the spring shaft 12 is shown. The balance lever 56a forms an integral unit with the lever 1 which is non-rotatably connected to the cover shaft 2. A spring 55a which similar to the spring 54 is subject to a pre-load is pivoted to the balance lever, the spring 55a being capable of being pre-loaded by means of an adjusting screw 63a, the adjusting screw bearing against the case 57. The adiusting screw 63a permits the spring tension to be regulated 30 so that, with the gear 52 or 53 IFigure 1) removed, the gravity force of the step cover 3 can be fully balanced.
Due to the separately effected balance of the gravity forces due to the step cover 3 and the skirt member 13, it is possible to sub-stantially relieve the motions oF the synchronised gears 52, 53, the same applYing to the piston/cylinder unit 50. In consequence of this, little space is required for the actuating mechanism, manufacturing costs are reduced as a result of the reduced consumption of material and, as a similarly positive side-effect, energy is saved because only the friction forces have to be overcome. From the angle of operating safety, the actuating mechanism described is also advantageous in as much as the pre-load of the springs 547 55a, 55b can be adjusted in a manner that dropping out of the skirt member 13 is positively pre-vented even if the piston/cylinder unit 50 should fail.
_5_
The invention relates to an entrance arrangement for an urban or suburban vehicle, typically a rail vehicle, with two fixed steps and a skirt member capable of turning about a skirt shaft Iying parallel to the vehicle longitudinal axis and horizontal, said skirt member supporting a step on its inside as well as a step cover closing the entrance arrangement at the top, said step cover being foldable, guide cams being provided on the foldable step cover, said guide cams being in sliding contact with cam discs, the complete step cover being capable of being swung towards the inside of the vehicle behind the 10 fixed steps, by means oF support levers and a cover shaft connected to the support levers and Iying horizontal and parallel to the vehicle longitudinal axis, one of the levers being connected in a non-rotating m anner and the other two levers in a rotating manner to the cover shaft as in German Patent Specification 26 20 683, The German Patent Specification 26 20 683 disclosed a pivoted and folding type steo for the entrance of rail vehicles permitting the step to be adiusted to match different levels of platforms as used in the operating area of urban and suburban vehicles. In addition to at least 20 one fixed step, a skirt member pivotable about a shaft and a pivoting and, simultaneously, folding step cover are provided in the entrance area for this purpose. The skirt member and step cover are connected by gearing means so that the step cover is pivoted inwardly, whi le the skirt member is swung out. In this pivoted position, lower platforms can be served, the initial position being intended for platforms which are level- with the floor.
The object of the invention is to further improve this entrance arrangement in a manner that the actuating mechanism required for it is substantially relieved by balancing the gravity forces due to the weight 30 of the step cover and skirt member and, simultaneously, the complete system is always maintained in a safe condition if the actuating mechanism should fai 1.
This object is achieved in that the cover shaft is indirectly operable by a pneumatic piston/cylinder unit, one cylinder thereof being pivoted with one end in a bearing flexibly to a casing of the entrance system and the piston rod extending from the other end actuating the skirt shaft via a balance lever which is non-rotatably connected to the skirt shaFt, in that said skirt shaft actuates the cover shaft Iying parallel to the skirt shaft via gears arranged opposite to the piston/cylinder unit, in that a spring or springs are provided for balancing the weight of the skirt member attached to the skirt shaft as wel I as the weight of the step cover which is non-rotatably fastened to the cover shaft, and in that the springs are connected at one end ~0 each via balance levers to the skirt shaft or cover shaft respectively in a non-rotating manner, whereas the other end of the springs is connected via adjusting screws to the casing of the entrance system.
Due to the actuation according to the invention, the piston/cylinder unit is relieved efFectively of forces due to the weight.
The piston/cylinder unit only need to overcome the friction forces.
Not only is energy saved in this manner, the sizes of the piston/cylinder unit and the force-transmitting elements are also minimized so that, apart from a saving of space, there is also a reduction in manufacturing costs. The adiusting screws make it easy for the maintenance and 20 service personnel to effect the balance of the weight.
A typical embodiment of the invention is illustrated in the drawings in which:
Figure 1 is a front view of an entrance arrangement with half of the ski rt member removed;
Figure 2 shows the actuating side part of the entrance arrangement with the skirt member swung out (section 11-11 in Figure l);
Figure 3 is a section along the line 111-111 with the piston/cylinder unit and the spring to balance a skirt member; and Figure 4 is a section along the line IV-IV with a spring to 30 balance a step cover.
Figure I shows an entrance arrangement with a step cover 3 and skirt member 13 which are pivotably supported on a cover shaft 2 and skirt shaft 12 respectively. For ease of reference, the left-hand half of the figure is drawn with the step cover in its open position.
356~
Both shafts are actuated by a pneumatic piston/cylinder unit 50 (Figures 2, 4) which, by means of a balance lever 51 connected non-rotatably to the skirt shaFt 12 operates a gear 52 opposite the piston/cylinder unit which gear meshes with a second gear 53 which is non-rotatably fitted to the cover shaft 2. The cover shaft 2 operates the step cover 3 via levers 1 and 31 respectively. As a result, the step cover 3 and the skirt member 13 are functionally connected so that the skirt member 13 will fold outwardly when the step cover 3 is pivoted inwardly. In order to relieve the piston/cylinder unit 50 and the gears 10 52, 53 of the not inconsiderable gravity forces, springs 547 55a, 55b are associated according to the invention with each the skirt shaft 12 and the cover shaft 2. The step cover 3 is provided at its two ends with spring systems to balance its gravity forces, parts of the spring system being designated for reasons of symmetry with the letters a and b in addition to the reference numerals. These springs are non-rota-tably connected via the balance levers 54, 56a, 56b to the shirt shaft 12 or the cover shaft 2 respectively with the lever 56a, 56b advanta-geously forming a unit with the levers 1 and 31 respectively, the lever 1 and lever 31 respectively being non-rotatably fitted on the cover shaft 20 2 or vice versa.
Figure 2 shows the pneutmatic piston/cylinder unit 50 serving as the actuator, the piston/cylinder unit being rotatably-supported in a bearing system 58 arranged in a case 57 of the entrance system. A
piston rod 59 of the piston/cylinder unit 50 engages the balance lever 51 which is non-rotatably connected to the skirt shaft 12. Pivoted to the balance lever 51 is also a pre-loaded spring 54 serving to balance the weight of the skirt. An adjusting screw 62 (Figure 3) is provided t o adiust the pre-load, the adiusting screw 6Z bearing against the case 57. This adiusting screw 52 enables the gravity force of the skirt 13 30 to be fully compensated. In order to compensate the gravity force of the cover shaft 2 (Figure 4) a second spring 55a is associated with the balance lever 56a. The balance lever 56a advantageously forms an integral unit with the lever 1, the lever 1 or lever 31 respectively being connected non-rotatably with the cover shaft 2. The secand ;s;Dring '7 55a is capable of being pre-loaded by a defined amount by means of an adjusting screw 63a.
A detai led representation oF the spring 54 and the piston/cylinder unit 50 is reproduced in Figure 3. The cross-section of the entrance system shows the skirt shaft 12 to which is fitted the balance lever 51 in a non-rotating manner. Engaging the balance lever 51 are the spring 54 and the piston rod 59 of the piston/cylinder unit 50. V\~hen the piston/cylinder unit 50 is operated, the balance Iver with the skirt shaft 12 attached to it will be turned. The gravity force 10 of the skirt member 13 will be compensated by the spring 54 which is subjected to a controllable degree of pre-load. Control of the pre-load is by means of an adjusting screw 62 which engages a segment 60 which is rotatable in the case 57, the spring 54 being in turn pivoted to the segment 60. The adjusting screw 62 bears against the case 57. With the gear 52 or 53 (Figure 1) removed, it is easy for the fitter or maintenance crew by turning the adjusting screw 62 to subject the spring 54 to a pre-load so that the gravity force of the skirt member 13 is balanced and, in addition, the skirt member is prevented from folding away downwards if the piston/cylinder unit 50 should fail. In 20 other words, it also provides a safety function.
Figure 4 shows the weight balance system of the step cover 3. Furthermore, the complete mechanism of the parts which are rotatable about the cover shaft 2 and the spring shaft 12 is shown. The balance lever 56a forms an integral unit with the lever 1 which is non-rotatably connected to the cover shaft 2. A spring 55a which similar to the spring 54 is subject to a pre-load is pivoted to the balance lever, the spring 55a being capable of being pre-loaded by means of an adjusting screw 63a, the adjusting screw bearing against the case 57. The adiusting screw 63a permits the spring tension to be regulated 30 so that, with the gear 52 or 53 IFigure 1) removed, the gravity force of the step cover 3 can be fully balanced.
Due to the separately effected balance of the gravity forces due to the step cover 3 and the skirt member 13, it is possible to sub-stantially relieve the motions oF the synchronised gears 52, 53, the same applYing to the piston/cylinder unit 50. In consequence of this, little space is required for the actuating mechanism, manufacturing costs are reduced as a result of the reduced consumption of material and, as a similarly positive side-effect, energy is saved because only the friction forces have to be overcome. From the angle of operating safety, the actuating mechanism described is also advantageous in as much as the pre-load of the springs 547 55a, 55b can be adjusted in a manner that dropping out of the skirt member 13 is positively pre-vented even if the piston/cylinder unit 50 should fail.
_5_
Claims
1. Entrance arrangement for an urban or suburban vehicle, typically a rail vehicle, with two fixed steps and a skirt member capable of turning about a skirt shaft lying parallel to the vehicle longitudinal axis and horizontal, said skirt member supporting a step on its inside as well as a step cover closing the entrance arrangement at the top, said step cover being foldable, guide cams being provided on the foldable step cover, said guide cams being in sliding contact with cam discs and the complete step cover being capable of being swung towards the vehicle inside behind the fixed steps, by means of support levers and a cover shaft connected to the support levers and lying horizontal and parallel to the vehicle longitudinal axis, one of the levers being non-rotatably connected to the cover shaft and the other of the two levers being rotatably connected to the cover shaft, characterized in that the cover shaft is capable of being indirectly actuated by a pneumatic piston/cylinder unit, one cylinder of samd being flexibly articulated with one end in a bearing to a case of the entrance arrangement and the piston rod pro-jecting from the other end actuating the skirt shaft via a balance lever connected non-rotatably to the skirt shaft, in that said skirt shaft actuates the cover shaft lying parallel to the skirt shaft by means of gears arranged opposite the piston/cylinder unit, in that a spring or springs are provided to balance the weight of the skirt member connected to the skirt shaft as well as the step cover attached non-rotatably to t he cover shaft, and in that said springs are each connected non-rota-tably with one end via balance levers to the skirt shaft or, respectively, cover shaft whereas the other end of the springs are connected by means of adjusting screws to the case of the entrance arrangement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3015909.2 | 1980-04-24 | ||
| DE19803015909 DE3015909A1 (en) | 1976-05-11 | 1980-04-24 | Urban transport rail vehicle pneumatic boarding assembly - has lever and springs providing weight compensation for apron and cover spindles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1150567A true CA1150567A (en) | 1983-07-26 |
Family
ID=6100878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000376104A Expired CA1150567A (en) | 1980-04-24 | 1981-04-23 | Entrance arrangement for an urban or suburban vehicle, typically a rail vehicle |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR8102598A (en) |
| CA (1) | CA1150567A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2145710A1 (en) * | 1998-07-06 | 2000-07-01 | Faiveley Espanola | Improved retractable step for passenger cars |
| ES2146173A1 (en) * | 1998-06-30 | 2000-07-16 | Faiveley Espanola | Improved retractable step for passenger cars |
-
1981
- 1981-04-23 CA CA000376104A patent/CA1150567A/en not_active Expired
- 1981-04-24 BR BR8102598A patent/BR8102598A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2146173A1 (en) * | 1998-06-30 | 2000-07-16 | Faiveley Espanola | Improved retractable step for passenger cars |
| ES2145710A1 (en) * | 1998-07-06 | 2000-07-01 | Faiveley Espanola | Improved retractable step for passenger cars |
Also Published As
| Publication number | Publication date |
|---|---|
| BR8102598A (en) | 1982-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |