EP1770048B1 - Device for hanging a rail, especially a transporting rail of a conveyor or a hoist - Google Patents

Description

Arrangement of a rail and a device for suspending a rail, in particular a running rail of a suspension conveyor or a hoist, on a chassis or a supporting structure with a tension element which carries the rail at one end via a holder, wherein the holder in a holding position a extending and at least partially extending in the longitudinal direction of the rail support member of the rail, already known from the prospectus (December 2002 issue) entitled "overview of Ingersoll-Rand Material Handling Solutions".

From the brochure (March 2000 issue) titled "Crane kit KBK classic and KBK ergo" Demag Cranes & Components GmbH, Weather in Germany, a crane box system with downwardly open c-shaped and I-shaped rails is known, with which various types such as monorails, single-girder overhead cranes, double-girder overhead cranes can be realized. The rails are each mounted on suspensions on structures, other rails or trolleys that run in other rails. These suspensions consist essentially of a suspended on the aforementioned structures, other rails or chassis rod-like tension element having at its lower end a steel ball head, which is in engagement with a complementary ball socket with plastic sliding. The ball socket is attached via a holder on the rail to be suspended. This ball-and-socket bearing suspension ensures that the rails automatically align themselves, ie, bring themselves into equilibrium, i. no significant bending load in the tension element occurs.

In a suspension of downwardly open c-shaped rails with a arranged at the top of the rail upwardly widening web, preferably y- or T-shaped web, the holder consists of two identical holding parts. These holding parts are formed as sheet metal parts so that after joining and holding together by means of screws, in the lower part of the widening web of the rail is clamped and received in the upper part of the ball socket and the pull element is performed by a recess.

This type of suspensions has been proven for many years and is easy to install anywhere on a rail, since there the holding parts are assembled and pulled by means of screws against each other for clamping down the rail.

Also in the house of Demag Cranes & Components GmbH, weather in Germany another suspension for a downwardly open C-shaped crane rail with a arranged at the top of the rail and upwards y-shaped widening web is known. This suspension consists essentially of a tension element and a one-piece bracket. The tension member has a pull rod and an eyelet secured with its bore on a bolt which extends in the longitudinal direction of the rail and is mounted in the holder. The tension element is thus pivotable transversely to the rail. In and against the longitudinal direction of the rail, the tension element is rigid. The bracket-shaped holder can be pushed from one end to the web of the rail and fastened with a screw at the desired suspension point on the rail. The screw is guided through a hole in the web.

The European Patent Application EP 0 860 394 A2 describes the attachment of a pulling element with a ball head in a complementary ball socket via a holder on a Y-shaped web of a rail. The holder could be one-piece. The ball head of the tension element is carried out from above through the correspondingly dimensioned opening of the holder and then the two-part ball socket to be executed is then likewise introduced through this opening or from the side. Whether the holder is secured by further means on the Y-shaped web of the rail is not described.

The German Auslegeschrift DE-A 51 096 288 shows a holder for suspending a rail on an I-shaped support. This upwardly open c-shaped bracket has two opposite and pivotable gripping arms, which, after the holder has been arranged below the web of the rail, are pivoted with their hook-shaped ends on the upper side of the web in a holding position. In the holding position, the gripping arms are held by one screw at a time. In particular, this type of holder is characterized by an adjustment possibility of the holder relative to the I-shaped rail. Even in the Holding position of the gripping arms is a sufficient lateral clearance available to move about an adjustment of the screws, the bracket with respect to the rail sideways can. The subject of fall protection in connection with a failure of the screws is not covered in this document.

Furthermore, from the German Patent DE 197 53 169 C2 a device for suspending a rail, in particular a downwardly open hollow rail of a suspension crane known. Here, the rail is also characterized by an upwardly disposed y-shaped web, which is encompassed by a C-shaped bracket, which is suspended via a ball head and a tension element on an I-shaped rail. The holder between the ball head and the y-shaped web is formed in two parts and is connected to each other over two seen in the longitudinal direction of the rail successively arranged and extending transversely to the rail screws. Thus, then the ball head is gripped by the two parts of the holder. A failure of the screws would cause the holding parts to loosen and thus release the ball head of the tension element.

The object of the present invention is to provide an arrangement of a rail and a device for suspending a rail, in particular a running rail of an overhead conveyor or a hoist, in which an increased fall safety is given.

This object is achieved by the reproduced in claim 1 device. Advantageous embodiments will become apparent from the dependent claims 2 to 10.

According to the solution is in a device for suspending a rail, in particular a running rail of a suspension conveyor or a hoist on a chassis or structure with a tension element which carries the rail at one end via a bracket, wherein the holder is an expanding and at least partially in Longitudinal support of the rail extending support member of the rail, an increased fall protection achieved in that the holder consists of two holding parts, which are connected in the manner of a tong mechanism via a bolt extending in the longitudinal direction of the rail whose holding portions from the open position to the holding position with their holding areas to pivot on each other, and rests on the contact surfaces of the support member of the rail in the open position with dissolved fasteners.

Compared to the prior art, the fastening means are used only to fix the holder in the longitudinal direction of the rail. The gripping arm-shaped bracket holds without the fasteners on the support member of the rail alone due to their structure and not by the usual clamping screws that pull the holding parts of the bracket together. The tong-like design of the holder allows an opening limitation in the open position in that on the first holding part a contact surface and the second holding part a counter-contact surface are arranged, which limit in the open position of the holder further opening of the holding parts. In order to distribute the forces of the opening limitation more uniformly on the holder, it is provided that a contact surface and a counter-bearing surface are arranged on each of the holding parts.

The frictional connection of the screws with the web slippage of the bracket along the rail is avoided without weakening the web.

In an advantageous embodiment, it is provided that the holder in an open position on the support element in the longitudinal direction of the rail is exclusively pushed. So it is not easy as previously known at the point of the desired attachment, the holder composed of two parts. This ensures that the holder does not open in case of failure of the otherwise usual clamping screws and the rail crashes.

Preferably, the support element of the rail is designed as extending in the longitudinal direction of the rail and arranged on top of the rail Y-shaped or a T-shaped web. The bridge is particularly good to encompass the bracket.

For the crash-proof recording of the support member of the rail in the holder in the holder extending in the longitudinal direction of the rail longitudinal opening is arranged, which tapers in the direction of the rail to be suspended to a gap region which is narrower than an expanding portion of the support member of the rail, and in the support element is received.

In order to be able to carry the rail safely, the holder has bearing surfaces in the region of the longitudinal opening on which the support element rests.

In an advantageous embodiment it is provided that the holder consists of two holding parts which are connected in the manner of a tong mechanism via a bolt extending in the longitudinal direction of the rail and from the open position to the holding position with their holding areas are pivotable towards each other. Here, the holding parts of the holder are held by screws designed as fastening means in the holding position and in the holding position are the holding portions of the holding parts seen in the longitudinal direction of the rail biased on the sides of the support element.

The manufacture of the holder is facilitated by the fact that the holding parts are identical.

The range of application of the suspension is increased by the fact that the bracket is pivotally connected to the tension element.

Figur 1

eine perspektivische Ansicht eines Einträger-Hängekrans,

Figur 2

einen vergrößerten Ausschnitt des Bereichs Z von Figur 1,

Figur 3

eine Ansicht der Aufhängung aus Figur 2,

Figur 4

eine Seitenansicht von Figur 3 teilweise im Schnitt mit Halteteilen in der Haltestellung,

Figur 5

eine Ansicht gemäß Figur 4 mit Halteteilen in der Offenstellung,

Further details and advantages of the invention are explained in the subclaims and the following description of an embodiment with reference to the drawing. Show it:

FIG. 1

a perspective view of a single-girder overhead crane,

FIG. 2

an enlarged section of the area Z of FIG. 1 .

FIG. 3

a view of the suspension FIG. 2 .

FIG. 4

a side view of FIG. 3 partly in section with holding parts in the holding position,

FIG. 5

a view according to FIG. 4 with holding parts in the open position,

In the Figures 1 and 2 a single-girder suspension crane with two suspensions 1 is shown, via which a substantially horizontal, downwardly open C-shaped rail 2 is suspended on two substantially horizontal, parallel and spaced-apart and also downwardly open C-shaped rails 3 , The rail 2 in this case runs essentially transversely to the rails 3 and is along the rails 3 movable. For this purpose, the rail 2 is suspended via the two suspensions 1 each on a chassis 4 (see FIG. 2 ), which are movable in the running rail 3 via rollers, not shown, along the longitudinal direction thereof. On the rail 2, a not shown hoist is suspended as a chain or cable and can be moved with another chassis along the rail 2 in the usual way. Also, other suspensions 1 not shown are provided along the rails 3, with which they are suspended from structures, other rails or chassis.

These suspensions 1 have ball and socket bearings and are therefore designed to oscillate, as this ensures that the rail 2 and the rails 3 align automatically, so bring in the state of equilibrium, ie no significant bending load in the suspension 1, in particular in the in the Suspension 1 arranged tension element 6 (see FIG. 2 ) occurs.

Thus, it is possible to take the hoist on the load or a hanging switch and move along the rail 2 and the running rail 3 without a separate drive for this purpose. During a movement along the rail 3, it happens by the non-central - each dependent on the position of the hoist on the rail - force introduction regularly that the rail 2 is inclined with the hoist from a position perpendicular to the rails 3 out. This inclination is about 20 ° to 30 °. Normally, such a tilting would lead to jamming of the rail 2 and the chassis 4 on the running rail 3. However, as described above, the suspensions 1 are oscillating in nature, the rails 3 can easily reduce their distance from each other in a diagonal train and the trolleys 4 can be moved further unhindered in the rails 3. Under pendulum suspension 1 is understood here that they allow rotation about a vertical axis and also a lateral tilting.

From the FIG. 2 It can be clearly seen that the chassis 4 has two tabs 4a, each with a bore 4b. The mutually parallel and spaced-apart tabs 4a protrude downwards out of the running rail 3. Between the tabs 4a, an upper end of a tension element 6 of the suspension 1 is arranged. The tension element 6 is as a flat flap conical or strip-shaped formed and aligned approximately perpendicular to the longitudinal direction of the rail 2. This tension member 6 has an upper bore 10 and a lower bore 11 (see FIG. 3 ) on. The tension member 6 is suspended on the landing gear via a bolt 5 which is passed through the bore 4b of the first lug 4a, the upper bore 10 and the bore 4b of the second lug 4a. The upper bore 10 has a cutting bearing, ie the bore 10 is designed to be spherical and the pin 5 is angularly movably guided point-shaped on the edge formed by crown. The lower bore 11 serves to suspend the rail 2 on the tension element 6. For this purpose, a further bolt 7 is performed through the lower bore 11, whose respective ends 7a, 7b, which extend beyond the tension element 6 in the longitudinal direction of the rail 2, engage in a holder 9 and held there rotationally in holes 13. This holder 9 engages positively an upper web 2a of the rail 2, which is formed in a y-shape and extends correspondingly from the top of the rail 2, starting upwards. In principle, a T-shaped or otherwise widening design of the web 2a is also possible.

In the FIGS. 3 to 5 is the suspension 1 for the rail 2, in particular its holder 9, shown in a first embodiment and in Figures 6 and 7 in a second embodiment in detail. In addition to the FIG. 2 given description, it can be seen that in the lower bore 11 of the tension element 6, a joint bearing 8 is arranged, which is penetrated by the bolt 7. The bolt 7 is aligned parallel to the longitudinal direction of the rail 2. The tension member 6 is thus seen to the bracket 9 and seen in the longitudinal direction of the rail 2 laterally about the bolt 7 to the right and left pivotable and seen in the longitudinal direction of the tension element 6 by about ± 15 °. Further ± 15 ° pivoting occur between the tension element 6 and pin 5 on the cutting edge bearing in the bore 10.

The FIGS. 3 to 5 show a first embodiment of the holder 9, which consists essentially of two identical holding parts 9a and 9b. The two holding parts 9a and 9b are limited by the bolt 7 for suspension on the tension element 6 pivotally mounted from an open position to a holding position to each other. In FIG. 4 is the stop position and in FIG. 5 the open position shown. In both positions and any intermediate positions have in the longitudinal direction of the rail 2, the holding parts 9a, 9b a downwardly open c-shaped Cross-section, which delimits a running in the longitudinal direction of the rail 2 mushroom-shaped, upwardly widening longitudinal opening 12. Functionally, the holding parts 9a, 9b can be divided into an upper hanging area 9c and a lower holding area 9d. This longitudinal opening 12, which is delimited by the holding areas 9d of the holding parts 9a, 9b of the holder 9, has a lower gap area 12a and an opening area 12b adjoining upwards thereon. The holding region 9d thus has the shape of two opposing holding arms or gripping arms, which are angled away from one another in the longitudinal direction of the rail 2 and are spaced apart from one another by the longitudinal opening 12, to their free lower end. The gripping arms are angled towards one another, terminate in the gap region 12a and thus taper the opening region 12b. In the opening region 12b, the holding region 9d, starting from the gap region 12a, has planar support surfaces 12c rising obliquely upwards. These support surfaces 12c are used for the areal absorption of the web ends 2b of the y-shaped web 2a, which widens outward in the opposite direction. These bearing surfaces 12c thus take on the load of the rail 2 and the load supported or suspended thereon, regardless of whether the holder 9 is in the open or holding position.

The limited by the bolt 7 angularly movable holding parts 9 a, 9 b form a kind of pliers mechanism to hold the rail 2. The peculiarity of the holding parts 9a, 9b, however, is that their angular mobility is limited such that even in the open position, the web ends 2b of the web 2a can not slip down from the longitudinal opening 12 of the holder 9 and thus be held securely.

The holder 9 of the suspension 1 according to the first embodiment, in particular their holding parts 9a and 9b, has transversely and horizontally to the longitudinal direction of the rail 2 an upwardly open space 16 of a U-shaped bracket 9, in particular their web-like suspension areas 9c , is limited. On the mutually facing inner sides 9e of the suspension areas 9c of the holder 9, flat conical projections 9f are arranged. The bores 13 of the suspension areas 9c of the holder 9 for the bolt 7 continue centrally in these projections 9f. By the projections 9f of the intermediate space 16 is tapered and contact surfaces for the joint bearing 8 are created.

In addition, by this gap 16, the articulated connection of the two holding parts 9a, 9b divided into a first and a second hinge joint-like joint area. Each of these joint regions has an arm 9g of the holding region 9d of the respective holding part 9a, 9b. Each of the arms 9g receives about a part of the bore 13 for the bolt 7 approximately centrally in the longitudinal direction of the rail 2. The arrangement of the arms 9g, the bolt 7 and the bore 13 is similar to a multi-section bolt connection.

In order to achieve the previously described limitation of the angular mobility of the holding parts 9a and 9b, abutment surfaces 17 are formed on one holding part 9a and complementary abutment surfaces 18 are formed on the other holding part 9b. The counter-bearing surfaces 18 are arranged on the lower sides of the free ends of the arms 9g and each aligned flat and substantially horizontal. The contact surfaces 17 are located laterally next to the free end of the opposite end of the arm 9 g on the holding part 9 a, 9 b and thus with respect to the bolt 7 opposite.

In the open position of the holding parts 9a and 9b come like clamping jaws of a pair of pliers mutually arranged contact surfaces 17 and counter-bearing surfaces 18 to the plant. In the holding position, the contact surfaces 17 are separated by a gap 19 from the counter-contact surfaces 18. However, the abutment surfaces 17 and the counter abutment surfaces 18 do not impede a closing movement, that is, a forceps-like application to the web 2a between the gripping levers of a pair.

In order to fix the holder 9 after pushing on the web 2a or after assembly about the web 2a in the longitudinal direction of the rail 2 at a desired location, two screws 14 are provided. The screws 14 pass through the holding parts 9a, 9b at a height such that they do not collide with the web 2a and cross the opening area 12b of the longitudinal opening 12 below the arms 9g. By means of the screws 14, the holding parts 9a, 9b are pivoted about the pin 7 from the open position to the holding position toward each other, until the ends of the gripping arm-like holding portions 9d come to rest on the web 2a. It should be emphasized again that this pinching primarily the determination of the bracket 9 in the longitudinal direction of the rail 2 and does not assume any significant holding or supporting function.

Accordingly, the size, in particular the height, of the opening portion 12b of the longitudinal opening 12 is selected so that the screws 14 have sufficient space to intersect the longitudinal opening 12 below the bolt 7 and above the web 2a. However, the height of the longitudinal opening 12 is not sufficient to postpone the holder 9 in the assembled state in the longitudinal direction of the rail 2, which extends substantially horizontally, on the web 2a of one end of the rail 2. A sliding is prevented by the fact that at the beginning and end of the rail 2 on the web 2a in the upper opening of the web 2a cylindrical connecting sleeves 2c are arranged. This connection sleeves 2c serve the end-side connection of two rails 2 on impact. Further connecting sleeves 2c can be found at the c-shaped lower ends of the rail 2 (see FIG. 1 ). These connecting sleeves 2c, which lie opposite each other at the junction of two rails 2, can then be easily connected by screws and at the same time orient the rails 2 relative to one another.

So the bracket 9 must be built together at the desired suspension point on the rail 2. For this purpose, the two holding parts 9a, 9b without the bolt 7 and the screws 14 at the desired suspension point on the rail 2 joined together so that the holes 13 are aligned with each other and the web 2a of the rail 2 is encompassed by the holding portions 9d of the holder 9 , Then, the bolt 7 is inserted in the longitudinal direction of the rail 2 from one side into the bore 13, so that the part of the bore 13 of the two first arms 9g of the holding parts 9a, 9b is penetrated. Now, the tension element 6 is inserted with its joint bearing 8 in alignment with the bore 13 in the intermediate space 16. The bolt 7 is further pushed through the pivot bearing 8 and the rest of the bore 13 in the two second arms 9 g of the holding parts 9 a, 9 b until the head 7 c of the bolt 7 comes to rest on the holder 9. On the other side, the other end 7a of the bolt 7 projects out of the bore 13. To secure the bolt 7 in the bore 13, a circumferential groove 7d is provided at the protruding end 7a of the bolt 7, in the side of a locking ring 20 is inserted, which comes to rest on the other end of the bracket 9.

In an alternative embodiment of the holder 9, which is not shown in the drawing, it can be provided that the height of the opening region 12b and the size of the gap region 12a of the longitudinal opening 12 in the open position or the Distance of the arm-shaped holding portions 9d of the holder 9 are selected so that the holder 9 in the longitudinal direction of the rail 2, which extends substantially horizontally, can be pushed onto the web 2a of one end of the rail 2. The longitudinal opening 12, in particular its opening region 12b, starting from the gap region 12a, is then provided with a sufficient height to allow the connection sleeves 2c to pass in addition to the web 2a.

In the embodiments described above, the tension element 6 is connected in each case via a joint bearing 8 with the holder 9. In principle, it is also possible to fasten the tension element 6 with its lower bore 11 directly on the holder 9 via the bolt 7. In the bore 11 can be provided for this purpose as described above cutting bearing.

Also, in the aforementioned embodiment, the preferred use of the suspension 1 in single-girder suspension cranes, namely there between the rail 2 and the running rail 3 described. This new suspension 1 is of course also suitable to suspend the rails 3 on suitable structures or other rails 2. The rail 2 may also be I-shaped.

LIST OF REFERENCE NUMBERS

1

suspension

2

rail

2a

web

2 B

web ends

2c

connecting sleeve

3

running rail

3a

web

3c

connecting sleeve

4

landing gear

4a

flap

4b

drilling

5

bolt

6

tension element

7

bolt

7a

End of the bolt

7b

End of the bolt

7c

head

7d

groove

8th

Spherical plain bearings

9

bracket

9a

holding part

9b

holding part

9c

suspension region

9d

holding area

9e

inside

9f

head Start

9g

poor

10

upper hole

11

lower hole

12

longitudinal opening

12a

gap region

12b

opening area

12c

bearing surface

13

drilling

14

screw

15

drilling

16

gap

17

contact surface

18

Anvil surface

19

gap

20

circlip

Z

magnification range

Claims (10)

1. Arrangement comprising a rail and a device for suspending a rail, and in particular a travel rail for an overhead conveyor or a hoist, from a trolley (4) or a trolley having a traction member (6), which trolley (4) carries the rail (2) at one end via a mounting (9), the mounting (9) fitting round, in a holding position, a carried part of the rail (2) which widens out and at least part of which extends in the longitudinal direction of the rail (2), the mounting (9) comprising two holding parts (9a, 9b) which are connected after the fashion of a pincer mechanism by a pin (7) extending in the longitudinal direction of the rail (2) to allow the holding parts (9a, 9b) of the mounting (9) to be pivoted towards one another at their holding regions (9d) from an open position to the holding position, the holding regions (9d) carrying the carried part of the rail (2) in the holding position, characterized in that the holding parts (9a, 9b) of the mounting are so designed that, even in the open position, the carried part of the rail (2) rests on the holding regions (9d) of the holding parts (9a, 9b).
2. Arrangement according to claim 1, characterized in that, in the holding position, the mounting (9) can be locked to the carried part in the longitudinal direction of the rail (2) by frictional engagement by means of fastening means.
3. Arrangement according to claim 1 or 2, characterized in that, in an open position, the mounting (9) can be slid onto the carried part in the longitudinal direction of the rail (2).
4. Arrangement according to one of claims 1 to 3, characterized in that the carried part of the rail (2) is in the form of a Y-shaped or a T-shaped flange (2a) which extends in the longitudinal direction of the rail (2) and which is arranged at the top of the rail (2).
5. Arrangement according to one of claims 1 to 4, characterized in that a longitudinal opening (12) extending in the longitudinal direction of the rail (2) is arranged in the mounting (9), the longitudinal opening (12) tapers towards the rail (2) to be suspended to form a gap region (12a) which is narrower than a region of the carried part of the rail (2) which widens out, and the carried part is received in the longitudinal opening (12).
6. Arrangement according to claim 5, characterized in that the mounting (9) has, in the region of the longitudinal opening (12), the supporting faces (12c) on which the carried part rests.
7. Arrangement according to one of claims 1 to 6, characterized in that the holding parts (9a, 9b) of the mounting (9) are held in the holding position by means of fastening means in the form of screws or bolts (14), and, looking in the longitudinal direction of the rail (2), the holding regions (9d) of the holding parts (9a, 9b) bear against the sides of the carried part under a pre-loading in the holding position.
8. Arrangement according to one of claims 1 to 7, characterized in that a contacting face (17) is arranged on the first holding part (9a) and a mating contacting face (18) is arranged on the second holding part (9b) and when the mounting is in the open position these contacting faces set a limit to any further opening of the holding parts (9a, 9b).
9. Arrangement according to claim 8, characterized in that a contacting face (17) and a mating contacting face (18) are arranged on each of the holding parts (9a, 9b).
10. Arrangement according to one of claims 6 to 9, characterized in that the holding parts (9a, 9b) are identical.

Images