Carriage

Abstract

A carriage (1) for conveying objects on a rail system with tubular rails which are arranged parallel to one another and at a distance from one another has a carriage platform (12), at least two bogies (2, 3) which are rotatably fastened to the carriage platform (12) via one pivot bearing (7) each, rail wheel receptacles (5) which are fastened to each of the bogies (2, 3) and are arranged on a base plate (6) of the associated bogie (2, 3), and rail wheels (4) which are mounted in the rail wheel receptacles (5), wherein a plurality of cam rollers (8) having rolling elements which bear against the carriage platform (12) and support the associated bogie (2, 3) in relation to the base plate (6) are fastened to each of the base plates (6).

Description

[0001] VEHICLES

[0002] The present invention relates to a carriage for transporting objects on a rail system with round rails arranged parallel to each other and spaced apart from each other according to the preamble of claim 1.

[0003] These types of trolleys are typically used to transport heavy objects in factory halls. A track system with round rails is usually laid in the floor of such a factory hall, allowing the trolley wheels to roll with minimal friction.

[0004] In order to be able to travel on curved circular rails, where the rail system forms a curve, it is necessary to arrange rail wheels in pairs on chassis, with wheel axles that are radially aligned to the radius of curvature of the curve of the circular rails when traveling around curves.

[0005] Such a chassis is usually attached to a carriage plate via a swivel bearing.

[0006] The load on such a swivel bearing is particularly problematic when transporting heavy objects on the wagon platform.

[0007] The object of the present invention is to provide a carriage for transporting objects on a rail system with parallel, spaced-apart round rails, with which simple cornering is made possible.

[0008] The task is solved by a vehicle with the features of claims 1 and 2.

[0009] The carriage according to the invention for transporting objects on a rail system with parallel and spaced-apart round rails comprises a carriage plate, at least two chassis rotatably mounted on the carriage plate via respective pivot bearings, wheel mounts attached to each chassis and arranged on a base plate of the respective chassis, and wheels mounted in the wheel mounts. According to a first embodiment, several cam rollers with roller elements bearing against the carriage plate and supporting the respective chassis against the base plate are attached to each of the base plates.

[0010] With a carriage designed in this way, smooth alignment of the rail wheels is made possible when cornering.

[0011] In particular, in such a carriage, the round rail in conjunction with the rail wheels assumes the leading or controlling function for the appropriate alignment of the rail wheels on the parallel round rails, resulting in a self-aligning system.

[0012] According to a second design variant, at least one track stabilizer is arranged on each of the rail wheel mounts in front of and / or behind a respective rail wheel.

[0013] With a carriage designed in this way, unintentional twisting of the carriages and thus derailment of the rail wheels in curves due to disturbances in the track area or other disturbance impulses is effectively prevented in a simple manner.

[0014] Advantageous embodiments of the invention are the subject of the dependent claims.

[0015] According to an advantageous embodiment of the invention, the cam rollers are attached near an outer edge of the respective base plate and near wheel bearing housings of the rail wheel mounts and are aligned such that a rolling path of the roller elements on the carriage plate lies on a circular line, the center of which is given by the axis of rotation of the pivot bearing.

[0016] The arrangement of the cam rollers close to the wheel bearing housings of the rail wheel mounts enables optimized load transfer from the carriage plate to the rail wheels and from there to the round rails.

[0017] According to a further advantageous embodiment, each of the cam rollers has a roller holder attached to the base plate, on which the respective roller element is held.

[0018] The rolling elements are preferably designed as wheels or rollers. According to one embodiment, the rail wheels are formed in one piece. Such one-piece rail wheels can be used particularly on railway lines with curves having very large bending radii.

[0019] According to another advantageous embodiment, each of the rail wheels has two wheel elements rotatably mounted on a bearing housing of the rail wheel, which can be rotated independently of each other about their wheel axis.

[0020] This allows the carriage to move smoothly even when cornering sharply, as the individual wheel elements, which have to cover relatively different distances in tighter corners, can rotate independently of each other.

[0021] According to a preferred embodiment, the wheel elements are mounted on a common wheel axle.

[0022] In an alternative design variant, the wheel elements are mounted on wheel axles that are aligned at an angle to each other.

[0023] According to another advantageous embodiment, the rail wheels are rotatably mounted in the respective rail wheel mounts about an axis of rotation aligned parallel to the axis of rotation of the pivot bearing of the respective chassis.

[0024] This also allows for the relative adjustment of the rail wheels of a chassis in different rolling directions.

[0025] The rail wheels of the respective chassis are preferably coupled to each other via an actuating unit.

[0026] The actuating unit itself preferably has an actuator as well as actuating elements that can be driven by the actuator and connecting rods that couple the actuating elements to the rail wheels.

[0027] According to an advantageous embodiment, the track stabilizer is not in contact with the round rail when the rail wheel is traveling straight ahead, and is in contact with the round rail when the rail wheel is traveling around a curve. According to an alternative embodiment, the track stabilizer is permanently in contact with the round rail, either elastically or by means of springs.

[0028] According to another advantageous design variant, the track stabilizer is designed as a support roller.

[0029] It is also conceivable to design them as sliding blocks or similar. However, designing the track stabilizers as support rollers is preferred due to the lower friction with the round rail. Furthermore, surface irregularities of the round rails can be more easily overcome with track stabilizers designed as support rollers.

[0030] To further improve stabilization, after advantageous further development, at least one track stabilizer is arranged in front of and behind each of the rail wheel mounts.

[0031] In order to stabilize the journey even on routes with right and left curves, according to a further design variant, two track stabilizers are arranged in front of and / or behind each of the rail wheel mounts, with the two track stabilizers being positioned in a horizontal plane parallel and perpendicular to the wheel axis of the rail wheel.

[0032] Each of the track stabilizers is attached to a bearing body of the rail wheel mount after a preferred further development.

[0033] In order to easily adapt to different curve radii, each of the track stabilizers is adjustable to the rail wheel mount parallel to the wheel axle of the rail wheel, preferably by adjusting the bearing body on the rail wheel mount.

[0034] A preferred embodiment of the invention is explained in more detail below with reference to the accompanying drawings. These show:

[0035] Figure 1 shows a schematic isometric view of an embodiment of a carriage according to the invention.

[0036] 2 and 3 side views of the carriage according to Figure 1 from different perspectives,

[0037] Figure 4 shows an isometric view of the carriage according to Figure 1 from below with chassis aligned parallel to each other,

[0038] Figure 5 shows a representation of the carriage corresponding to Figure 4, with the chassis aligned at an angle to each other for cornering.

[0039] Figures

[0040] Figures 6 and 7 are isometric views of the chassis in the orientations shown in Figures 4 and 5.

[0041] Figures

[0042] Figures 8 and 9 show views of the chassis from a different perspective, corresponding to Figures 6 and 7.

[0043] Figure 10 shows a side view of one of the chassis,

[0044] Figure 11 shows a representation of the chassis, corresponding to Figure 10, installed in the housing of the vehicle,

[0045] Figure 12 shows a representation corresponding to Figure 11 when the rail wheels are aligned for a curve and

[0046] Figure 13 shows a view from below of the carriage with the alignment of the rail wheels when traveling straight ahead,

[0047] Figure 14 shows a representation corresponding to Figure 13 with the alignment of the rail wheels when cornering,

[0048] Figures

[0049] Figures 15 and 16 are isometric views of chassis sections with track stabilizers arranged on different sides of the rail wheels. Figure 17 is a side view of the chassis section according to Figure 15.

[0050] Figure 18 shows a front view of a chassis with rail wheels and track stabilizers according to Figure 15.

[0051] Figures

[0052] 19 and 20 isometric individual views of track stabilizers attached to bearing bodies on one side,

[0053] Figure 21 shows a front view of a bearing body with a stabilizer attached to it when the vehicle is traveling straight ahead.

[0054] Figure 22 shows a front view of a bearing body with a track stabilizer attached to it during cornering of the vehicle.

[0055] Figures

[0056] 23 and 24 isometric individual views of track stabilizers attached to bearing bodies on different sides,

[0057] Figure 25 shows a front view of the bearing bodies according to Figures 23 and 24 with the track stabilizer attached to them during cornering of the vehicle.

[0058] Figure 26 shows a front view of a bearing body according to Figures 23 and 24 with a track stabilizer attached to it when the vehicle is traveling straight ahead.

[0059] In the following figure descriptions, terms such as top, bottom, left, right, front, back, etc., refer exclusively to the exemplary representation and position of the carriage, carriage plate, chassis, base plate, rail wheels, cam roller, and the like as chosen in the respective figures. These terms are not to be understood as restrictive; that is, these references may change due to different working positions, mirror-symmetrical design, or similar factors.

[0060] In Figure 1, reference numeral 1 designates an embodiment of a carriage according to the invention. The carriage 1 serves to transport objects on a rail system with round rails 15 arranged parallel to and spaced apart from each other (schematically represented as dashed lines in Figures 13 and 14).

[0061] The carriage 1 has, as shown in Figures 1 to 5, a carriage platform 12 on the upper side of which the items to be transported can be placed.

[0062] On the underside of the carriage plate 12, as shown in the illustrated embodiment, two chassis 2, 3 are arranged, rotatably attached to the carriage plate 12 via respective pivot bearings 7. Depending on the length of the carriage plate 12, viewed in the direction of travel x, it is also conceivable to provide more than two such chassis 2, 3 on the underside of the carriage plate 12.

[0063] As shown in Figures 4 and 5, rail wheel mounts 5 are attached to each of the chassis 2, 3, which are arranged on a base plate 6 of the respective chassis 2, 3.

[0064] Rail wheels 4 are mounted in the rail wheel mounts 5. Each rail wheel mount 5 has a wheel bearing housing 51 attached to the base plate 6 for mounting the rail wheels 4.

[0065] Wheel suspensions 52 are attached to this wheel bearing housing 51, here in the form of plates arranged on both sides of each rail wheel 4, which serve to support a wheel axle 53 on which the respective rail wheel 4 is rotatably mounted.

[0066] As further shown in Figures 4 and 5, a drive motor 13 is used to drive the carriage 1, which is coupled to and drives at least one of the rail wheels 4.

[0067] As further shown in Figures 6 and 7 (perspective views of the chassis 2, 3 with the rail wheels 4 attached to them), several cam rollers 8 with roller elements 82 bearing against the chassis 12, supporting the respective chassis 2, 3 against the base 62, are attached to a top surface 61 facing away from the underside 62 of the base plate 6 and facing the underside of the carriage plate 12. This ensures that the pivot bearing 7 only has to bear a very small proportion of the weight of the carriage plate 12 and of any objects placed on it.

[0068] The cam rollers 8 are preferably attached near an outer edge of the respective base plate 6 and near the wheel bearing housings 51 of the rail wheel mounts 5, as shown in Figures 6 and 7.

[0069] The rolling elements 82 are aligned such that a rolling path of the rolling elements 82 lies on a circular line on the carriage plate 12, the center of which is given by the axis of rotation of the pivot bearing 7, as is shown by a dashed circle in Figures 13 and 14.

[0070] The rolling elements 82 themselves are preferably designed as wheels or rollers.

[0071] The roller elements 82 are held on a roller bracket 81 attached to the base plate 6.

[0072] As further shown in Figures 4, 5, 8 and 9, each of the rail wheels has

[0073] 4 preferably two rotatably mounted on a bearing housing 51 of the rail wheel mount

[0074] 5 mounted wheel elements 41 , 42, which are independently rotatable about their wheel axis 43.

[0075] The two wheel elements 41, 42 are preferably of identical shape and are mounted opposite each other with their rail rolling surfaces such that the rail rolling surfaces of the wheel elements 41, 42 forming a rail wheel 4 encompass the round rail as a whole by a circumferential angle of preferably 100° to 140°.

[0076] Basically, each of the wheel elements 41, 42 touches the round rail at a single point of contact, so that a rail wheel 4 composed of the two wheel elements 41, 42 forms a two-point contact with the round rail and can be placed on the round rail from above.

[0077] In the embodiments shown in the figures, the wheel elements 41, 42 are mounted on a common wheel axle 43.

[0078] It is also conceivable to mount the wheel elements 41, 42 on wheel axles aligned at an angle to each other, as is described by way of example in the case of the rail wheelset designed as a rail wheel according to EP 3826862 B1. One-piece rail wheels 4 are also conceivable, especially for use on railway lines with curves with very large bending radii.

[0079] As can be clearly seen in Figures 6 and 7, the rail wheels 4 are rotatably mounted in the respective rail wheel mounts 5 about an axis of rotation aligned parallel to the axis of rotation of the pivot bearing 7 of the respective chassis 2, 3.

[0080] This allows, for example, the carriage 1 to rotate on the spot around its own central axis.

[0081] Furthermore, the rail wheels 4 of the respective chassis 2, 3 are preferably coupled to each other via an actuating unit 9.

[0082] The actuating unit 9 each has an actuator 91 and actuating elements 92 that can be driven by the actuator 91, here in the form of interlocking toothed discs, and coupling rods 93 that couple the actuating elements 92 to the rail wheels 4.

[0083] The connecting rods 93 are guided in preferably circular arc segment-shaped guide grooves 63 of the base plate 6.

[0084] As shown in Figures 15 to 26, at least one track stabilizer 53 is arranged on each of the rail wheel mounts 5 in front of and / or behind a respective rail wheel 4 to stabilize the carriage when cornering.

[0085] Preferably, as shown in Figures 15 to 17, at least one track stabilizer 53 is arranged in front of and behind at least one of the rail wheels 4.

[0086] The stabilizer 53 is designed as a support roller in the preferred embodiments shown here. In principle, a design as a sliding cheek or the like is also conceivable.

[0087] The track stabilizers 53 are attached to the rail wheel mounts 5 in such a way that the track stabilizers 53 do not come into contact with the round rail 15 when the rail wheel 4 travels straight ahead, as shown by way of example in Figures 21 and 26. When the rail wheel 4 travels around a curve, however, the track stabilizers 53 come into contact with the round rail 15, as shown by way of example in Figures 22 and 25.

[0088] It is also conceivable to design the track stabilizer 53 elastically or to mount it spring-loaded in order to enable permanent contact between the track stabilizer 53 and the round rail 15.

[0089] As can be seen from Figure 15, in this embodiment the track stabilizers 53 are arranged in front of and behind the rail wheel 4, offset to the left of the rail wheel 4, and thus, by contacting the round rail 15 mounted in a bearing profile 16, as shown in Figure 22, ensure the stabilization of the carriage on a left-hand curve of a railway track.

[0090] Figure 16 shows a corresponding arrangement of the track stabilizers 53 in front of and behind the rail wheel 4, offset to the right of the rail wheel 4, to stabilize the carriage on a right-hand curve of a railway track.

[0091] If the track to be traversed has both right-hand and left-hand curves, two track stabilizers 53 are preferably arranged on each of the rail wheel mounts 5 in front of and / or behind a respective rail wheel 4.

[0092] The two track stabilizers 53 are positioned in a horizontal plane parallel and perpendicular to the wheel axis 43 of the rail wheel 4, as shown in Figures 22 to 26.

[0093] The track stabilizers 53 are preferably attached to a respective bearing body 54 of the rail wheel mount 5.

[0094] In the embodiment shown in Figures 22 to 26, it is also conceivable to design the two adjacent individual bearing bodies 54 as a one-piece bearing body to which the two track stabilizers 53 are attached offset.

[0095] Preferably, the track stabilizers 53 are adjustable to the rail wheel mount 5 parallel to the wheel axle 43 of the rail wheel 4 to adapt to different curve radii of a track. The adjustment is preferably achieved by displacing the bearing bodies 54 on the rail wheel mount 5. For this purpose, elongated holes 541 are provided on the bearing bodies 54, through which screws 17 can be guided. These screws are preferably screwed into one of the wheel suspensions 52 of the rail wheel mount 5 to clamp the bearing body 54 in a position corresponding to the curve radius.

[0096] As further shown in Figures 15, 16, 19 and 20, a cleaning element 55, preferably a brush, is also attached to the bearing body 54. In the embodiment shown here, the cleaning element 55 is in its

[0097] The height is adjustable in the z direction and fixed to the bearing body 54. For adjustable fastening, elongated holes 551 are provided in the cleaning element 55, into which screws 18 protrude and which can be screwed into corresponding threaded bores 542 in the bearing body 54.

[0098] Reference symbol list

[0099] 1 trolley

[0100] 2 chassis

[0101] 3 Chassis

[0102] 4 rail wheel

[0103] 41 first wheel element

[0104] 42 second wheel element

[0105] 43 Wheel axle

[0106] 5 Rail wheel mount

[0107] 51 Wheel bearing housings

[0108] 52 Wheel suspension

[0109] 53 Track stabilizer

[0110] 54 bearing bodies

[0111] 541 Slotted hole

[0112] 542 bore

[0113] 55 cleaning element

[0114] 551 Slotted hole

[0115] 6 Base plate

[0116] 61 Top

[0117] 62 Underside

[0118] 63 Guide groove

[0119] 7 swivel bearings

[0120] 71 Rotary bearing housings

[0121] 72 Counter plate

[0122] 8 Curve roller

[0123] 81 Roller bracket

[0124] 82 Support roller

[0125] 9 Actuator

[0126] 91 Actuator

[0127] 92 Actuator

[0128] 93 Connecting rod 11 Housing

[0129] 12 Cart plate

[0130] 13 Drive motor

[0131] 15 Round rail 16 Bearing profile

[0132] 17 screw

[0133] 18 Screw x Direction of travel y Transverse direction z Direction ds Distance of rails n Radius r2 Radius

Claims

Claims 1. Carriage (1 ) for transporting objects on a rail system with round rails (15) arranged parallel to each other and spaced apart from each other, comprising a carriage plate (12), at least two chassis (2, 3) rotatably attached to the carriage plate (12) via respective pivot bearings (7), rail wheel mounts (5) attached to each of the chassis (2, 3) and arranged on a base plate (6) of the respective chassis (2, 3), rail wheels (4) mounted in the rail wheel mounts (5), characterized in that several cam rollers (8) with roller elements (82) bearing against the carriage plate (12) and supporting the respective chassis (2, 3) against the base plate (6) are attached to each of the base plates (6).

2. Vehicle (1 ) according to claim 1 or according to the preamble of claim 1 , characterized in that at least one track stabilizer (53) is arranged on at least one of the rail wheel mounts (5) in front of and / or behind a respective rail wheel (4).

3. Carriage (1 ) according to claim 1 or 2, characterized in that the curve rollers (8) are attached near an outer edge of the respective base plate (6) and near wheel bearing housings (51 ) of the rail wheel receptacles (5) and are aligned such that a rolling track of the roller elements (82) on the carriage plate (12) lies on a circular line, the center of which is given by the axis of rotation of the pivot bearing (7).

4. Trolley (1 ) according to one of the preceding claims, characterized in that each of the cam rollers (8) has a roller holder (81 ) attached to the base plate (6), on which the respective roller element (82) is held.

5. Trolley (1 ) according to one of the preceding claims, characterized in that the rolling elements (82) are designed as wheels or rollers.

6. Trolley (1 ) according to one of the preceding claims, characterized in that the rail wheels (4) are formed in one piece.

7. Trolley (1 ) according to one of claims 1 to 5, characterized in that each of the rail wheels (4) has two wheel elements (41 , 42) rotatably mounted on a bearing housing (51 ) of the rail wheel receptacle (5), which are rotatable independently of each other about their wheel axis (43).

8. Trolley (1 ) according to claim 7, characterized in that the wheel elements (41 , 42) are mounted on a common wheel axle (43).

9. Vehicle (1 ) according to claim 7, characterized in that the wheel elements (41 , 42) are mounted on wheel axles oriented at an angle to each other.

10. Carriage (1 ) according to one of the preceding claims, characterized in that the rail wheels (4) are rotatably mounted in the respective rail wheel receptacles (5) about an axis of rotation aligned parallel to the axis of rotation of the pivot bearing (7) of the respective chassis (2, 3).

11. Carriage (1) according to claim 10, characterized in that the rail wheels (4) of the respective chassis (2, 3) are coupled to each other via an actuating unit (9).

12. Carriage (1 ) according to claim 11 , characterized in that the actuating unit (9) has an actuator (91 ), actuating elements (92) that can be driven by the actuator (91 ) and coupling rods (93) that couple the actuating elements (92) to the rail wheels (4).

13. Carriage (1 ) according to one of claims 2 to 12, characterized in that the track stabilizer (53) is not in contact with the round rail (15) when the rail wheel (4) travels straight ahead and is in contact with the round rail (15) when the rail wheel (4) travels around a curve.

14. Carriage (1 ) according to one of claims 2 to 12, characterized in that the track stabilizer (53) is elastically or springily mounted and is permanently in contact with the round rail (15).

15. Vehicle (1 ) according to one of claims 2 to 14, characterized in that the track stabilizer (53) is designed as a support roller.

16. Vehicle (1 ) according to one of claims 2 to 15, characterized in that at least one track stabilizer (53) is arranged on each of the rail wheel mounts (5) in front of and behind a respective rail wheel (4).

17. Carriage (1 ) according to one of claims 2 to 16, characterized in that two track stabilizers (53) are arranged on each of the rail wheel receptacles (5) in front of and / or behind a respective rail wheel (4), wherein the two track stabilizers (53) are positioned offset in a horizontal plane parallel and perpendicular to the wheel axis (43) of the rail wheel (4).

18. Vehicle (1 ) according to one of claims 2 to 17, characterized in that the track stabilizer (53) is attached to a bearing body (54) of the rail wheel receptacle (5).

19. Carriage (1 ) according to one of claims 2 to 18, characterized in that the track stabilizer (53) is adjustably attached to the rail wheel mount (5) parallel to the wheel axle (43) of the rail wheel (4).

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