DE3222697C2 - Mobile rail elevator with tilt-adjustable telescopic rail - Google Patents

Abstract

Mobile rail elevator with an arrangement of telescopically extendable rails (1, 2), with a slide (4) that can be moved along the rails and with a joint piece (11) which allows the inclination of part of the innermost (uppermost) telescopic rail (1) and whose joint axis is transverse to the planes of movement of the carriage (4). The joint piece (11) consists of two holding arms (14, 15) connected outside the planes of movement in the joint axis (12), the first of which is firmly connected to the next-innermost telescopic rail (2) in its head area and the second to one , the innermost telescopic rail (1) enclosing guide (18) is equipped. The innermost telescopic rail (1) is provided with a rigid upper end part (20) and a foot end (23) with a bendable bridging element (22) which can be passed over by the carriage (4) and which connects the end part (20) with the foot end (23) ) connects.

Description

a) the bendable part, the bridging element (22) between a rigid upper end part (20) and a foot end (23) of the innermost telescopic rail (1) and arranged in the Rail running surface (rail spar 21) connected to these by an elastic tongue (24) which is underlaid by curvature blocks (26,27,28) cut in a sector-like manner, and

b) the bendable bridging element (22) into the next inner telescopic rail (2) and is extendable.

2. Rail elevator according to claim 1, characterized in that the curvature blocks (26,27,28) are cut wedge-shaped and have a wedge angle of β _nm / n {fimax · achievable angle of inclination of the angled, upper end part (20) with respect to the rest of the rail arrangement; n: number of curvature blocks).

3. Rail elevator according to claim 1 or 2, characterized in that opposite one another Curvature blocks (26,27,28) across the width of the rail reaching cross struts (30, 31) are interconnected.

4. Rail elevator, in which the carriage rope (6) via one at the upper end part (20) of the innermost telescopic rail (1) attached turning roller (8) is laid, according to claim 1, characterized in that the The carriage (4) can be fixed in a holding position with a stop shoe (45).

5. Rail elevator according to claim 1, characterized in that a resilient return element

(40) is arranged between the holding arms (14,15) of the joint (10).

6. Rail vehicle according to claim 1, characterized in that that the elastic tongue (24) is a spring leaf made of spring steel.

. The invention relates to a mobile rail elevator with telescopic rails that can be pulled out telescopically by means of a cable pull and a carriage that can be moved thereon by means of a carriage rope, with an articulated carriage for inclination adjustment Formation of a part of the innermost telescopic rail with standing transverse to the plane of movement of the conveyor Joint axes, the joint being in a joint piece with a bridging element connected at a distance from the plane of movement in the joint axes Embodied holding arms, one with the next-inner telescopic rail and the other with a Slide guide for the innermost telescopic rail is connected

For adapting mobile rail lifts to different Roof slopes, it is known, the upper part of the telescopic rail assembly of such elevators articulated. This results in a steeper lower telescope part and a flatter one, for example to the Roof surface parallel upper telescopic part.

Such a telescopic rail arrangement is proposed in DE-OS 31 20 048. There will be two Telescopic rail sections pivoted against each other about an axis of rotation lying within the rail plane The transition from one section to the other forms a sharp bend in the roadway for the sled, which does not allow it to be run over quickly and causes a strong shock to the sled and of the transported cargo. Also the telescopic rail arrangement itself is caused by the impact movements that occur when driving over the kink The slide is heavily used and must therefore be more stable and heavier than with static loading only be built. Another disadvantage arises from the fact that one for the operation of the inclination adjustment Rail elevator with the articulated telescopic rail arrangement described, a third cable pull system This increases the mechanical effort for guiding and driving the cables considerable.

Another articulated telescopic rail arrangement is known from DE-GM 18 76 191. The one described there The joint works with an axis of rotation that runs outside the plane of the rail, around which two telescopic rail sections are pivoted against each other. The one resulting from the pivoting The space between each two ends of the fixed rails is created by means of a chain threaded onto a chain. formed a cylindrical body exhibiting a small amount of clearance. One end of the chain is fixed to the end of the connected to a rail, while the second end of the chain with the cylindrical bodies arranged thereon slides freely in the hollow other rail. Compared to the first mentioned script, this results

not a kinked, but a curved transition in the roadway; but this has several, of the number of cylindrical bodies and the angle of inclination dependent, wedge-shaped road surface breaks on. This results in shock loads at these points when the carriage drives over them and in the wake of deformations and increased wear in the transition area of the sled track, especially with larger angles of inclination. Another disadvantage is that the setting of the angle of inclination only by manually loosening one that acts in the extended position of the rail sections The upper rail part is locked and then tilted until it rests on the roof surface can.

Finally, in DE-OS 30 35 801, a joint piece for adjusting the inclination of the upper rail part of an elevator described, which has two axes of rotation approximately in the rail plane. Through this the result is a roadway with two kinks and

b5 a short flat intermediate piece in the transition area. Here, too, problems arise from the impact loads that occur, albeit in opposite directions the first described embodiment, milder

Shape. It is also to be regarded as disadvantageous that the inclination adjustment by manual actuation of a spindle in the joint piece has to be carried out, which increases the operational safety and the ease of use is detrimental

It is therefore the task of mobile rail lifts using the existing ones Cables adjust the inclination at different angles of inclination, at least the innermost To enable (top) telescopic rail that is easy to operate both when extending and retracting the device allowed, with safe crossing of the transition at any angle of inclination between the uppermost and the lower rail is made possible

This object is achieved according to the invention by a mobile rail elevator of the type mentioned at the beginning Kind with the features of the characterizing part of claim 1.

Due to the inventive arrangement of the bridging element between a rigid upper end part and a foot end of the innermost telescopic rail and its design as an elastic tongue underlaid with sector-like blocks are several Benefits achieved. The track for the sledge is white no interruption and is continuously curved, i. H. Shock loads are absorbed and distributed. The forces exerted by the carriage on the bridging element are determined by the forces following the curve Sector-like blocks contacting each other in the manner of an arched wall were added and opened transferred the ends of the rigid rail parts. Through this the upper part of the rail elevator is less dynamically loaded and can therefore with the same Stability and durability can be made lighter and thus cost-saving. This version offers at the same time a high load-bearing capacity and extensive freedom from deformation under load. Another The advantage arises from the fact that the bendable bridging element is part of the innermost telescopic rail can be retracted and extended into the next inner telescopic rail, while the joint piece is stationary on the upper one The end of the rigid telescopic rail part remains. This ensures that "a telescoping of the Telescopic rails can be made in the usual way and that for adjusting the angle of inclination no manual intervention is required. The angle of inclination ', the innermost telescopic rail hangs only depends on how far the innermost rail is telescoped in relation to the next inside, d. H. the setting the angle of inclination takes place in a very simple manner using the telescopic cable. This means a significant one Gain in operating safety and convenience.

In an expedient AusfUhrungsforrn the curvature blocks are cut wedge-shaped with a Wedge angle, which is equal to the quotient of the maximum attainable angle of inclination of the two telescopic rail parts against each other and the number of curvature blocks. This makes it easy to manufacture of the blocks and an exact contacting of the blocks in the area of the curvature is achieved.

To stabilize and parallelize the bridging elements opposing curvature blocks are expedient by calculating across the width of the rail Cross struts connected to one another.

To further simplify the operation of the rail elevator with its slide rope running over a roller attached to the head end of the innermost telescopic rail, the slide is fixed in a holding position, preferably in the lower region of the rail arrangement. This is expediently done with a stop shoe. This measure ensures that the innermost telescopic rail can be retracted from its inclined position into the next inner rail extremely simply by shortening the length of the slide rope by means of its drive with a fixed slide. Both strands of the sled rope are guided over rollers in the area of the curvature, roughly in the plane of the rail.As the axis of rotation of the joint lies outside the plane of the rail, the exertion of a tensile force on the sled rope generates a torque that acts on the movable support arms of the joint in the direction of the fixed support arms . As a result, the free holding arms together with the sliding guide are pivoted to the fixed holding arms while the bridging elements are retracted into the next inner telescopic rail until the innermost telescopic rail is in line with the other telescopic rails. Then the telescopic rails are retracted into one another in the usual way by means of the telescopic cable.
In order to limit the load on the carriage rope to an acceptable level, the rail elevator has a resilient return element which is arranged between the holding arms. This element, preferably a tension spring, is expediently present on both sides in order to ensure a symmetrical distribution of forces.

The restoring element generates a torque between the holding arms which counteracts the torque generated by the force of gravity acting on the free end of the innermost telescopic rail after bending and partially cancels it. The tensile force on the sled rope that has to be used to erect the inclined telescopic part is reduced and the bearing load of the free telescopic rail end on the roof is also reduced
In particular, when the two last-mentioned measures are used at the same time, their mutual complementation results in an uncomplicated and stable mechanical structure and simple and safe operation of the rail elevator according to the invention both when extending and retracting the telescopic parts and when setting and canceling the inclination of the innermost Telescopic rail.

To ensure that the transition between the mutually inclined ones can be safely driven over In a preferred embodiment of the telescopic rails, the elastic tongue is a spring leaf made of spring steel. This combines the advantage of good stability and wear resistance with that of high elasticity.

With the aid of the technology described, the inclination of the innermost telescopic rail can be adjusted the rest of the telescopic rail arrangement between preferably 30 and 90 °, usually a maximum angle is set, which is based on the stability and mechanical conditions the rail arrangement can be calculated. The invention is illustrated in the following description the drawing explained. The figures of the drawing show

Fig. 1 shows a mobile rail elevator with retracted! Telescopic rail arrangement:

FIG. 2 a mobile rail elevator according to FIG. 1, but with the rail assembly extended;

Fig. 3 in detail in a perspective view Area of the bridging element when retracted

nerund

F i g. 4 with the rail assembly extended.

1 and 2 is a mobile rail elevator with an arrangement of telescopically extendable rails 1, 2, a slide 4 movable along the rails 1, 2 and a motor-driven winch 5 for the sled rope 6 shown. As can be seen, the slide rope 6 has a cable leading to the winch 5 Lower run 7 and an upper run 9 leading from the carriage 4 to the uppermost turning roller 8. The upper run End part 20 of the rail 1 attached turning roller 8 has a perpendicular to the plane of movement of the carriage 4 horizontal axis of rotation.

In the present case, the rail 1 is the innermost or topmost telescopic rail. How recognizable is this in their inclination in relation to the rest of the telescopic rail arrangement (represented by the telescopic rail no 2) inclined. For this purpose, a joint is provided, the The axis of rotation 12 runs transversely to the planes of movement of the carriage 4 on the telescopic rails 1 and 2, respectively.

As can be seen in more detail from FIGS. 3 and 4, The joint 10 is embodied in a joint piece 11, one of which on each side in the inclination area is attached between the telescopic rails 1 and 2. The joint piece 11 consists of at least two, outside the plane of movement of the carriage 4 in the axis of rotation 12 connected holding arms 14, 15, which in the retracted and also in the inclined state of the rail arrangement 1, 2, each parallel and closely adjacent to one another and lie perpendicular to the plane of movement of the carriage 4. The first holding arm 14 is fixed connected to the telescopic rail 2, for example via a base plate on the outside one at a time Rail stile 21 welded on. The first, fixed support arm 14 sits down in an elongated end 16 continues, which is provided, for example, with an axis running from one side of the rail to the other which can be attached on both sides a wheel 17 or a support foot or the like. With these elements, d. H. especially with Aufsetzwheels 17, can in the upper area of the rail elevator near the Eaves can be placed on the roof and significantly relieve the overall construction to lead.

The second holding arm 15 is fixed at its end remote from the hinge to one of the innermost telescopic rails 1 partially enclosing guide 18, 18 'connected, for example as a short piece of a U-rail can be designed. The innermost telescopic rail 1 can slide very easily in this U-guide 18, 18 ' and the rollers of the carriage can roll over the upper edge of the guide 18, 18 ".

It is also provided that the uppermost, innermost telescopic rail 1, in addition to a rigid, upper end part 20 and a foot end 23, which remains in the head end of the next inner rail 2, is provided with a bendable bridging element 22 which, when the rail 1 is inclined, can be traversed by the carriage 4 and the end part 20 connects to the foot end 23. The bridging element 22 consists of two relatively narrow elastic tongue springs 24, which roughly correspond in width to the upper side of the rail spars 21, and of curvature blocks 26, 27 and 28, some of which are cut in a sector-like manner, connected to the underside of these tongue springs 24. 3 shows, between the blocks 26, 27 and 28 in the inclined state of the rail 1 below the tongue spring 24 there are relatively wide, downwardly wedge-shaped joints which close in the course of the bending process, whereby the end faces of the blocks 26 to 28 contact each other. The sum of the wedge angles gives the total possible angle of inclination ß _ma x. For stabilization and parallelization, the blocks 26 to 28 are connected to one another by cross struts 30, 31 that extend over the width of the rail.

The inclination of the top innermost telescopic rail

ίο 1 is achieved by gradually extending the bridging element 22 from the next inner telescopic rail 2 made possible, the guide 18 with the holding arm 15 describes increasing angles with respect to the holding arm 14. After reaching the full Extension length of the innermost telescopic rail 1 strikes this with stop blocks 32 against a stop bar 33, which connects the two guides 18, 18 'to one another. At this point in time, the second holding arm has 15 of the joint piece 11 is in its most spread position (cf.

Fig. 4) reached. In this position it is limited by a transverse bracket 34 delimiting the angle of spread β mn with an elongated hole 35 and a bolt 36 sliding therein.
As can also be seen from the figure, the axis of rotation 12 for the second holding arm 15 is let into a bearing bracket 37 connected to the first holding arm 14. Opposite this bearing bracket 37, another bearing bracket 38 is attached to the first holding arm 14, which carries a fastening device 39 for a resilient return element 40, here a cylinder tension spring, which is fixed with its other end on the second holding arm 15. The spring 40 is used to relieve the bridging elements 22 and to support the carriage rope 6 when the innermost telescopic rail 1 is retrieved from an inclined position.

It should also be noted that between the rail spars 21 in the area of the bridging elements 22 two rollers 41,42 are mounted transversely to the plane of movement of the carriage 4, which are used to guide the bottom and Upper run 7, 9 of the slide rope 6 are used. If the carriage 4 is in a position in the lower region of the The rail elevator is set, for example by a stop shoe 45 which can be folded onto the rail 2 can happen, the carriage 4 cannot run upwards when the rope 6 is pulled towards the winch 5. Corresponding the inner telescopic rail 1 is erected over the upper turning roller 8, the bridging element 22 pushes into the next-innermost telescopic rail 2 and the sliding guide 18,18 'with the

so Halteajrnen 15 about the axis 12 of the joint 10 against the holding arms 14 pivot.

For explanation, the function of the rail elevator when moving in and out is briefly explained:

To extend the innermost rail 1, the end of a rope 47 is attached to the foot end 23, which with Help the winch 5 is to be operated. The rope 47 is guided in a known manner over a pulley 48 which is attached to the upper end of the rail 2 When running the rail 1 initially remains the joint piece 11 closed. The very beginning of the innermost Rail 1 is therefore also moved straight out. Due to the torque of this driven out Part 1 becomes the second holding arm when the bridging element 22 emerges from the rail 2 15 pivoted about a certain distance, with the uppermost curvature blocks 27, 28 against each other place. When the further length of the bridging element 22 is gradually extended, further

Curvature blocks 26 moved out, so that the moved out piece of the innermost rail 1 is extended further and the angle of inclination β increases further compared to the rest of the rail arrangement 2 , if the entire rail 1 is finally extended to the stop, the maximum angle of inclination is ßmax and the largest Spread angle β " _{m of} the joint piece 11 is reached. The rail 1 can rest with its upper end part 20 on a roof and is used to guide the slide 4. Before the rail 1 is retracted, the slide 4 is moved into the lower position. The stop 45 is folded in front of the carriage 4 so that it can no longer go up when the carriage rope 6 is tightened. By tightening the slide rope 6, tension is exerted on the turning roller 8 and the bridging element 22 is slowly moved into the next inner rail 2 through the guide 18, 18 '. The angle of inclination β is steadily reduced. As soon as the rail 1 is fully erected, there is again a customary, known, straight rail arrangement. This can also be extended or shortened on its own.

Usually, the angle of inclination β of the telescopic rail 1 to be angled will be limited to about 45 °. In principle, however, larger angles of inclination β are definitely possible. In this case, in addition to the movable holding arm 15, one or two further holding arms (not shown) can be used, which spread fan-like and ensure safe guidance of the longer bridging element required for this.

List of reference symbols description 35 sign innermost, upper telescopic rail 1 next inner telescopic rail 2 sleds 4th Winch 5 Sleigh rope 40 6th Lower run of the sled rope 7th Turning roll 8th Upper run of the sled rope 9 joint 10 Joint piece 45 U Axis of rotation 12th first holding arm, fixed 14th second holding arm 15th extended end of the first holding arm 16 Mounting wheel 50 17th guides 18.18 ' upper end part 20th Rail spar 21 Bridging element 22nd Foot end 55 23 elastic tongue (spring) 24 Curvature block 26th Curvature bock 27 Curvature block 28 Cross brace 60 30th Cross brace 21 Stop block 32 Stop bar 33 Cross tab 34 Long hole 65 35 bolt 36 Bearing bracket 37 Bearing bracket 38

39 Fastening device 40 resilient return element 41 role 42 role 45 Stop shoe 47 rope 48 Steering wheel

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1. Mobile rail elevator with telescopic rails and a thereupon by means of Sehlittenseil mobile carriage with an articulated for inclination adjustment Part of the innermost Tsleskop rail with joint axes transverse to the plane of movement of the conveyor, wherein the joint is in a knee with a bridging element with im Distance from the plane of movement embodied in the joint axes connected holding arms, their one with the next inner telescopic rail and the other with a sliding guide for the innermost one Telescopic rail is connected, characterized in that