CARRIAGE FOR A CONVEYING SYSTEM AND A CONVEYING SYSTEM WITH CARRIAGES

Abstract

A carriage for a rail-guided conveying system includes a carriage body, which is designed for embracing a runner rail and which includes a first and a second limb. The limbs are connected to one another by way of a transversely extending connecting section. The first limb has a first roller pair and the second limb has a second roller pair. The first and the second roller pair of the two limbs are arranged crosswise equal and offset to one another. In each case a first runner roller of the first and of the second roller pair is designed as a support roller, via which the load of the carriage can be transmitted onto the runner rail, and a second roller of the first and second roller pair is designed as a guide roller for guiding the carriage along the runner rail.

Claims

1. A carriage for a rail-guided conveying system, comprising a carriage body, which is designed for embracing a runner rail and which comprises a first and a second limb wherein the limbs are connected to one another by way of a transversely extending connecting section, the first limb comprises a first roller pair, which is attached on its inner side, at the second limb comprises a second roller pair, which is attached on its inner side, wherein the first and the second roller pairs of the two limbs are arranged equally and oppositely offset to one another in a crosswise manner, wherein in each case a first runner roller of the first and of the second roller pair is designed as a support roller, via which the load of the carriage can be transmitted onto the runner rail, and, in each case, a second roller of the first and second roller pair is designed as a guide roller for guiding the carriage along the runner rail.

2. The carriage according to claim 1, wherein the respective guide roller forms a limitation restricting a displacement of the carriage in two directions, which are parallel to a rotation axis of the guide roller and which are opposite to one another.

3. The carriage according to claim 1, wherein the support rollers and the guide rollers are arranged in a standing manner.

4. The carriage according to claim 1, wherein the guide rollers each comprise a guide recess, which is peripherally closed in the rotation direction and which is surrounded on both sides by a guide flank.

5. The carriage according to claim 4, wherein the guide recess, which is surrounded on both sides by the guide flank, is a guide groove.

6. The carriage according to claim 4, wherein the guide flank is a roller flange.

7. The carriage according to claim 1, wherein rotation axes of the guide rollers and of the support rollers run parallel to one another.

8. A carriage according to claim 1, wherein rotation axes of the guide roller and of the support roller of a roller pairing enclose an acute angle in the parallel projection in a running direction, wherein the rotation axes in each case diverge towards the opposite limb.

9. The carriage according to claim 1, wherein the support roller is arranged on the limb in each case towards a free end of the limb, and the guide roller is arranged on the limb in each case towards the connecting section.

10. The carriage according to claim 1, wherein the guide rollers are fastened on the carriage body with lateral and/or radial play.

11. The carriage according to claim 1, wherein the limbs each comprise a front limb face side facing a running direction and a rearward limb face side facing oppositely to the running direction, and the two limb face sides of a limb form at least one pairing of a projecting and a recessed face side section, which at the limb face sides are designed and arranged equally and oppositely to one another, in a manner such that the projecting and recessed face side sections of the limbs of two equally constructed carriages pushed onto one another along the running direction engage into one another.

12. The carriage according to claim 1, wherein the limbs each comprise a front limb face side facing a running direction and a rearward limb face side facing oppositely to the running direction, and contours of the limb face sides of a limb are each designed equally and oppositely to one another in a manner such that the contour of the front limb faces side of a trailing carriage positively engages into the contour of rear-side limb face side of a directly leading, equally constructed carriage.

13. The carriage according to claim 1, wherein a design of the limbs of the carriage and the arrangement of the rollers on the limbs, is such that rollers of equally constructed carriages pushed on one another in a running direction overlap at the inner side in each case with an adjacent limb of a directly leading or trailing carriage.

14. The carriage according to claim 1, wherein the carriage comprises a holding element, which is arranged on the carriage body, for holding a conveyed object.

15. A conveying system with a runner rail and at least one carriage, wherein the carriage comprises a carriage body, which is designed for embracing a runner rail and which comprises a first and second limb, wherein the limbs are connected to one another by way of a transversely extending connecting section, the first limb comprises a first roller pair, which is attached on its inner side, the second limb comprises a second roller pair, which is attached on its inner side, wherein the first and the second roller pair of the limbs are arranged equally and oppositely offset to one another in a crosswise manner, wherein in each case a first roller of the first and second roller pair is designed as a support roller, via which a load of the carriage can be transmitted onto the runner rail, and, in each case, a second roller of the first and second roller pair is designed as a guide roller for guiding the carriage along the runner rail.

16. The conveying system according to claim 15, wherein the respective guide roller and the runner rail are designed cooperating with one another in a manner such a limitation against a displacement of the carriage into the two directions, which are opposite to one another and parallel to the rotation axis of the guide roller, is formed.

17. The conveying system according to claim 15, wherein the runner rail forms running surfaces for the support rollers.

18. The conveying system according to claim 15, wherein the runner rail forms guide bars for guiding the carriage along the guide bars by way of the guide rollers.

19. The conveying system according to claim 15, wherein the runner rail forms guide recesses that run in a running direction and are surrounded on both sides by a guide flank and are each with a rolling surface for guiding the guide rollers in the guide recess.

20. The conveying system according to claim 19, wherein the guide recess is designed in a concave manner.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0152] The subject-matter of the invention is hereinafter explained in more detail by way of embodiment examples, which are represented in the accompanying drawings. In each case are represented schematically in:

[0153] FIG. 1 a perspective view of a carriage according to the invention, according to a first embodiment;

[0154] FIG. 2 a perspective view of the carriage according to FIG. 1, which is led along a runner rail;

[0155] FIG. 3 a front view of the carriage according to FIGS. 1 and 2, which is guided along the runner rail;

[0156] FIG. 4 a perspective view of a carriage according to the invention, according to a second embodiment;

[0157] FIG. 5 a perspective view of the carriage according to FIG. 4, which is led along a runner rail;

[0158] FIG. 6 a front view of the carriage according to FIGS. 4 and 5, which is led along the runner rail,

[0159] FIG. 7 a front view of a third embodiment of a carriage led along a runner rail;

[0160] FIG. 8 a front view of a fourth embodiment of a carriage led along a runner rail;

[0161] FIG. 9 a front view of a fifth embodiment of a carriage led along a runner rail;

[0162] FIG. 10 a front view of a sixth embodiment of a carriage led along a runner rail.

DETAILED DESCRIPTION OF THE INVENTION

[0163] The carriage 1, 51, 101, 151, 201, 251 according to FIGS. 1 to 10 has a carriage body 2, 102, 152, 202, 252, which is designed for embracing a runner rail 20, 120, 170, 220, 270. The carriage body 2, 102, 152, 202, 252 includes a first limb 3, 103, 153, 203, 253 and a second limb 4, 104, 154, 204, 254. The two limbs 3, 103, 153, 203, 253; 4, 104, 154, 204, 254 are connected to one another via a transversely extending connecting section 5, 105, 155, 205, 205, 255. The two limbs 3, 103, 153, 203, 253; 4, 104, 154, 204, 254 and the connecting section 5, 105, 155, 205, 205, 255 form an embracing section which is U-shaped in its cross-sectional profile. This embracing section encloses an open rail receiving space 12, 112, 162, 212, 262, through which the subsequently described runner rail 20, 210, 170, 220, 270 runs.

[0164] The limbs 3, 103, 153, 203, 253; 4, 104, 154, 204, 254 each have an inner side facing the runner rail 20, 210, 170, 220, 270 or the rail receiving space 12, 112, 162, 212, 262, as well as an outwardly facing outer side that is opposite to the inner side.

[0165] The first limb 3, 103, 153, 203,253 includes a support roller 6a, 106a, 156a, 206a, 256a that is attached on its inner side, towards its free end. The first limb 3, 103, 153, 203, 253 further includes a guide roller 6b, 56b, 106b, 156b, 206b, 256b that is arranged on its inner side towards the connecting section 5, 105, 155, 205, 205, 255. The support roller 6a, 106a, 156a, 206a, 256a and the guide roller 6b, 56b, 106b, 156b, 206b, 256b of the first limb 3, 103, 153, 203, 253 form a first roller pair.

[0166] The second limb 4, 104, 154, 204, 254 likewise includes a support roller 7a, 107a, 157a, 207a, 257a that is attached on its inner side, towards the free end of the limb. The second limb 4, 104, 154, 204, 254 likewise has a guide roller 7b, 57b, 107b, 157b, 207b, 257b that is arranged on its inner side, towards the connecting section 5, 105, 155, 205, 205, 255. The support roller 7a, 107a, 157a, 207a, 257a and the guide roller 7b, 57b, 107b, 157b, 207b, 257b of the second limb 4, 104, 154, 204, 254 form a second roller pair.

[0167] An outwards directed driver contact element 15, 115, 165, 215, 265 in the embodiment of a dog is arranged in each case on the limb 3, 103, 153, 203, 253; 4, 104, 154, 204, 254, towards the free end section of the limb 3, 103, 153, 203, 253; 4, 104, 154, 204, 254, on its outer side. The driver contact element however not a necessary feature of the present invention and moreover also does not need to be attached on the carriage at the indicated location.

[0168] The guide rollers 6b, 7b; 56b, 57b; 106b, 107b; 156b, 157b; 206b, 207b; 256b, 257b on the two limbs 3, 103, 153, 203, 253; 4, 104, 154, 204, 254 serve for guiding the carriage 1, 51, 101, 151, 201, 251 along the runner rail 20, 210, 170, 220, 270. They are fastened on the carriage body 2, 202, 152, 202, 252 with lateral play.

[0169] The guide rollers 6b, 7b; 56b, 57b; 106b, 107b; 156b, 157b; 206b, 207b; 256b, 257b for this are rotatably mounted on a stationary, i.e. rotationally fixed fastening pivot and are fastened on the carriage body 2, 202, 152, 202, 252 via an in particular releasable screw connection.

[0170] The guide rollers 6b, 7b; 56b, 57b; 156b, 157b; 206b, 207b according to the embodiments according to FIGS. 1 to 8 each have a peripheral guide recess 13, 63, 163, 213, which is closed in the rotation direction and is for receiving the guide bar 21a, 21b; 171a, 171b; 221a, 221b of a runner rail 20, 170, 220. The guide recess 13, 63, 163, 213 is surrounded or surrounded on both sides by a guide flank 14a, 14b; 64a, 64b; 164a, 164b; 214a; 214b.

[0171] The guide rollers 56b, 57b; 206b, 207b according to the embodiment according to FIGS. 4 to 6 as well as FIG. 8 differ from the guide rollers 6b, 7b; 156b, 157b according to the embodiments according to FIGS. 1 to 3 as well as FIG. 7, in the width of the guide recesses 13, 63, 163, 213. The different width of the guide recesses 13, 63, 163, 213 is explained in yet more detail further below in the context of the runner rail 20, 170, 220.

[0172] In the embodiments according to FIGS. 1 to 7, the rotation axes D of the guide rollers 6b, 7b; 56b, 57b; 156b, 157b and of the support rollers 6a, 7a; 156a, 157a are aligned parallel to one another. The support rollers 6a, 7a; 156a, 157a and guide rollers 6b, 7b; 56b, 57b, 156b, 157b are moreover arranged in a standing manner.

[0173] In all embodiments, the two roller pairs 6a, 6b; 7a, 7b; 56a, 56b; 57a, 57b; 106a, 106b; 107a, 107b; 156a, 156b; 157a, 157b; 206a, 206b; 207a, 207b; 256a, 256b; 257a, 257b of the two limbs 3, 4; 103, 104; 153, 154; 203, 204; 253, 254 are arranged equally and oppositely offset to one another in a crosswise manner. This means that the roller pairs have an X-shaped arrangement in a parallel projection parallel to their rotation axes D.

[0174] The limbs 3, 4 each have a front limb face side 8 facing the running direction F and a rearward limb face side 9 facing oppositely to the running direction F (only shown in the embodiments according to FIGS. 1 to 6).

[0175] The contours of the limb face sides 8, 9 of a limb 3, 4 according to the two embodiments according to FIGS. 1 to 6 are each designed equally and oppositely to one another. By way of this, the contour of the front limb face side 8 of a trailing carriage 1, 51 can positively engage into the contour of the rear-side limb face side 9 of a directly leading, constructionally equal carriage 1, 51.

[0176] The front and rearward limb face sides 8, 9 moreover each have a circularly arched projection 10 as well as a circularly arched recess 11, which on the limb face side 8, 9 are arranged next to one another considered along the limb longitudinal axis. However, the projection and recess 10, 11 can also be designed differently than in a circularly arched manner.

[0177] The recess 11 and the projection 10 on the rearward limb face side 9 are arranged equally and oppositely to the recess 11 and the projection 10 on the front limb face side 8.

[0178] The projections 10 and the recesses 11 of the face side sections 8, 9 facing one another, of the limbs 3, 4 of two constructional equal carriages pushed onto one another along the running direction F, engage into one another on account of this.

[0179] The geometric rotation axes D of the support rollers 6a, 7a, and of the guide rollers 6b, 7b, 56b, 57b each lead through the mentioned projections 10.

[0180] The support rollers 6a, 7a of constructionally equal carriages 1, 51 pushed onto one another in the running direction F thereby at the inner side each overlap with the adjacent limb 3, 44 of the directly leading or trailing carriage 1, 51.

[0181] The runner rail 20 according to the two embodiments according to FIGS. 1 to 6 has a cross-sectional profile of at least three profile sections 24, 25, 26, which are connected to one another. The profile sections 24, 25, 26 include a firstly laterally outwardly open profile section 24 with a first running surface 22a for receiving the support roller 6a of the first limb 3 of the carriage 1, 51, further a second, laterally outwardly open profile section 25 with a second running surface 22b for receiving the support roller 7a of the second limb 4 of the carriage 1, 51, as well as a third profile section 26 which is open in the vertical direction and is with two guide bars 21a, 21b for receiving a guide roller 6b; 7b; 56b, 57b on the first and second limb 3, 4 of the carriage 1, 51 in each case.

[0182] The two first and second profile sections 24, 25 are arranged mirror-symmetrically to a vertical middle longitudinal plane 23 of the runner rail 20. Accordingly, the first and the second profile sections 24, 25 are open in directions which are opposite to one another.

[0183] The third profile section 26 is likewise arranged mirror-symmetrically to the vertical middle longitudinal plane 23 of the runner rail 20.

[0184] The three profile sections 24, 25, 26 are each designed in a U-shaped manner with regard to the cross-sectional profile. The U-shape in each case includes a profile connecting section 27a-27c and profile limbs 28a-28c; 29a-29c, which connect thereto on both sides.

[0185] The profile connecting sections 27a, 27b of the first and of the second profile section 24, 25 of the runner rail 20 stand perpendicularly on the profile connecting section 27c of the third profile section 26 and abut on this.

[0186] The first and second profile sections 24, 25 are moreover arranged spaced from one another and form a closed intermediate space 30, which extends in the longitudinal direction of the runner rail 20.

[0187] The lower profile limb 29a, 29b of the first and second profile section 24, 25 in each case forms the running surface 22a, 22b for the support rollers 6a, 7a. The profile connecting sections 27a, 27b of the first and second profile section run parallel to one another.

[0188] The profile limbs 28c, 29c of the third profile section 26 in each case form the guide bars 21a, 21b for the guide rollers 6b, 7b; 56b, 57b.

[0189] The runner rail 170 according to the embodiment according to FIG. 7 is designed as a U-profile that is open to the bottom. The U-profile has two downwardly directed profile limbs, which form the guide bars 171a, 171b for the guided receiving of a guide roller 156b, 157b in each case.

[0190] According to the embodiments according to FIGS. 8 to 10, the rotation axes D of the pairings of guide roller and support roller 106a, 106b; 107a, 107b; 206a, 206b; 207a, 207b; 256a, 256b; 257a, 257b on one of the limbs 103, 104; 203, 204; 253, 254 are arranged at an acute angle to one another. The rotation axes D diverge in the direction of the rail receiving space 112, 212, 262.

[0191] In the embodiment according to FIG. 8, the guide rollers 206b, 207b are arranged standing. This means, the rotation axes D of the guide rollers 206b are aligned perpendicularly to the middle longitudinal plane 23. The rotation axes of the support rollers 206a, 207a and, with them, the running surfaces 222a, 222b of the runner rail 220 in contrast are arranged in an inclined manner with respect to the middle longitudinal plane 23.

[0192] The runner rail 220 here is likewise designed as a U-profile, which is open to the bottom. The U-profile likewise has two downwardly directed profile limbs, which form the guide bars 221a, 221b for the guided receiving of a guide roller 206b, 207b in each case.

[0193] The runner rail 20, 220 of the carriage 51, 201 according to the embodiment according to FIGS. 4 to 6 and 8 includes a U-shaped plastic profile 31, 231, which is placed upon the guide bar 21a, 21b; 221a, 221b in each case. The plastic profile 31, 231 is clampingly held on the guide bar 21a, 21b; 221a, 221b. Since the complete width of the guide bar 21a, 21b; 221a, 221b with the plastic profile 31, 231 increases due to this plastic profile, the guide recess 61, 213 of the guide rollers 56b, 57b; 206b, 207b of the carriage 51, 201 according to these two embodiments have a larger width compared to the guide rollers 6b, 7b; 156b, 157b of the carriage 1, 151 according to the embodiments according to FIGS. 1 to 3 and 7.

[0194] In contrast to the embodiment according to FIG. 8, with embodiment according to FIG. 9 the rotation axes D of the support rollers 106a, 107a as well as of the guide rollers 106b, 107b are arranged inclined with respect to the middle longitudinal plane 23. The running surfaces 122a, 122b for the support rollers 106a, 107a are accordingly likewise arranged in an inclined manner.

[0195] A holding hook 16a, which is attached on the connecting section 105 at the outer side, i.e. outside the rail receiving space 112 is also provided in the embodiment example according to FIG. 9. A holding hook 16a is shown in part also in FIG. 3.

[0196] The runner rail 120 here is designed as a simple hollow profile. In contrast to the embodiments according to FIGS. 1 to 8, the runner rail 120 does not form guide bars for the guide rollers 106b, 107b, but rather rolling surfaces 121a, 121b, which are arranged in a concave profile recess. The rolling surfaces 121a, 121b are accordingly delimited by two lateral, raised guide flanks.

[0197] In the embodiment according to FIG. 10, the rotation axes D of the support rollers 256a, 257a as well as of the guide rollers 256b, 257b are arranged inclined with respect to the middle longitudinal plane 23, analogously to the embodiment according to FIG. 9. The running surfaces 272a, 272b for the support rollers 256a, 257a are accordingly likewise arranged in an inclined manner. However, the inclination of the rotation axes D of the support rollers 256a, 267a and thus also of the running surfaces 272a, 272b is comparatively low.

[0198] The runner rail 270 likewise does not form guide bars for the guide rollers 256b, 257b, but rather rolling surfaces 271a, 271b, which are arranged in a profile recess. For this, the rolling surfaces 271a, 271b here are also delimited by lateral, raised guide flanks.

[0199] Moreover, in the embodiment example according to FIG. 10, a holding eyelet 16b attached on the connecting section 255 at the outer side, i.e. outside the rail receiving space 262 is provided. The eyelet 16b is aligned transverse to the running direction F.

[0200] The carriages 1, 51, 101, 151, 201, 251 according to the present embodiments according to FIGS. 1 to 10 now roll on the running surfaces 22a, 22b; 122a, 122b; 172a, 172b; 222a, 222b; 272a, 272b along the runner rail 20, 120, 170, 220, 270, via their support rollers 6a, 7a; 106a, 107a; 156a, 157a; 206a, 206b; 207a, 256a, 257a.

[0201] The carriages 1, 51, 101, 201, 251 thereby lie on the running surfaces 22a, 22b; 122a, 122b; 172a, 172b; 222a, 222b; 272a, 272b and thus on the runner rail 20, 120, 170, 220, 270, exclusively via their support rollers 6a, 7a; 106a, 107a; 156a, 157a; 206a, 207b; 207a, 256a, 257a.

[0202] Thereby, the load of the carriages 1, 51, 101, 201, 251 is transmitted onto the running surfaces 22a, 22b; 122a, 122b; 172a, 172b; 222a, 222b; 272a, 272b and thus onto the runner rail 20, 120, 170, 220, 270 exclusively via the support rollers 6a, 7a; 106a, 107a; 156a, 157a; 206a, 207a; 256a, 257a.

[0203] The guide rollers 6b, 7b; 56b, 57b; 106b, 107b; 156b, 157b; 206b, 207b; 256b, 257b in contrast are arranged below the respective guide bars 21a, 21b; 171a, 171b; 221a, 221b or rolling surfaces 121a, 121b; 271a, 271b and accordingly cannot transmit any load onto the runner rail 20, 120, 170, 220, 270.

[0204] According to the embodiments according to FIGS. 1 to 8, the guide bars 21a, 21b, 171a, 171b; 221a, 221b in each case engage from above into the guide recess 13, 163, 213 of the guide roller 6b, 7b, 56b, 57b; 156b, 157b; 206b, 207b, which is assigned to them and thus ensure a lateral guidance of the carriage 1, 51, 151, 2351. This lateral guidance e.g. prevents a lateral tilting of the carriage 1, 51, 151, 251.

[0205] According to the embodiments according to FIGS. 9 and 10, the guide rollers 106b, 107b; 256b, 257b below the runner rail 120, 170 are guided along the runner rail 120, 270, via rolling surfaces 121a, 121b; 271a, 271b, which are arranged in the profile recesses. The rolling surfaces 121a, 121b; 271a, 271b are accordingly flanked by lateral, raised guide flanks. A lateral guidance of the carriage 101, 251 is ensured by way of this, and this guidance, e.g., prevents a lateral tilting of the carriage 101, 251.

[0206] According to all embodiments according to FIGS. 1 to 10, tilting moments in and counter to the running direction F are accommodated by the crosswise equally and oppositely offset arrangement of the roller pairs 6a, 6b; 7a, 7b; 56a, 56b, 57a, 57b; 106a, 106b, 107a, 107b; 156a, 156b, 157a, 157b; 206a, 206b, 207a, 207b; 256a, 256b, 257a, 257b.