DE3001410C2 - Freight elevator with telescopic rail - Google Patents

Description

a) There are locking elements between the first telescopic section (la) and the second telescopic section (16) (4) (locking cams (6), Nockentriiger (7)) arranged, which by means of a with his a free end arranged at the control station actuating means (pull rope (17)) can be actuated are.

b) The actuating means (pull rope (17)) is with his the other free end on a pivotable one mounted on the first telescopic section (la) Body (5) connected.

c) Another pivotable body (5) is arranged on at least one further telescopic section (ib) and forms the guidance of one or more cables that can be shortened by pivoting.

d) The rope (e.g. 19b) that can be shortened by pivoting the pivotable body (5) is fastened in the area of the lower end of the following telescopic stage (e.g. Ib) , assigned to the locking elements (4) of this telescopic stage and on the pivotable body of the previous telescopic stage (z. B. la) out.

2. Load elevator according to claim 1, characterized in that the pivotable body (5) with the locking elements (4) assigned to them are also assigned to the following telescopic sections (1 c to 1 x) continuously up to the penultimate telescopic section (Ix).

3. Goods lift according to claim 1 or 2, characterized in that the pivotable body (5) mounted on axles (10) arranged perpendicular to the telescopic firing plane (9), each on the extendable one End (11) of each telescopic section (la to Ix) between two rungs (13) connecting the side rails (12) of the telescopic sections (1) Cable guide body (14) are.

4. Goods elevator according to one of claims 1 or 3, characterized in that the pivotable Body (5) have approximately the height of the rungs (13) and are designed as rollers or sliding block cages (15) are.

5. A freight elevator according to claim 4, characterized in that each roller or slide control cage (15) at least two offset transversely to the longitudinal direction of the TeIcskopschüsse (1) and the bearing axis (10) mounted rollers (16, 16 ') or corresponding sliding blocks having.

6. Load elevator according to claim 1, characterized in that that only at the first Teleskopschliß (I; /) a direct connection (rope 17) between the pivotable body (5) and corresponding operating elements (lever 18) is provided

7. Load elevator according to claims 1 and 6, characterized in that the second telescopic section (16) and the following telescopic sections (Ic to ix) each have a rope (t9b to 19x) assigned to one end (20) at the beginning (21) of the respective telescopic section and the other end (24) on the pivotable body (5) to the bearing axis (10) is attached laterally offset

8. A freight elevator according to claim 7, characterized in that each cable section (19) over the sliding blocks or rollers (16, 16 ') of the pivotable one assigned to the preceding telescopic section (1) Body (5) are performed.

9. Load elevator according to one or more of claims 1 to 8, characterized in that as Locking elements (4) each at the extendable ends (U) of the telescopic sections (la to Ix) parallel to the side bars (12) and in their vicinity with a plurality of spaced locking cams (6) or the like. Provided rotatably mounted cam carriers (7) are used, the length of which is at least the distance between two rungs (13) or other corresponding abutment of the to be locked other Feleskopverschußes (1) corresponds.

10. Goods lift according to claims 1 and 9, characterized in that between the pivotable Bodies (5) and one of the cam carriers (7) resilient traction means (26) offset to the respective bearing axis (Axis 10 and axis 27) are attached.

11. A freight elevator according to claim 10, characterized that as resilient Zugmittei (26) ropes (28) with activated tension spring (29) are used.

12. Goods lift according to one or more of the claims 1 to 11, characterized in that each cam carrier (7) has a further one continuously in the unlocking direction pre-tensioned spring (30) is assigned, the tension force of which is less than the elastic Tension force of the resilient traction means (26) (tension spring 29).

13. Goods lift according to one or more of the claims 1 to 12, characterized in that the cam carrier (7) has locking cams on one side (6) are occupied round bars (31) and these are wrapped by the resilient traction means (26) (rope 28).

14. Goods lift according to one or more of claims 1 to 13, characterized in that the two cam supports (7) each assigned to a telescopic section (1) via a connecting rod and / or pressure means (cable 32) are connected in such a way that, when the one cam carrier is actuated, each pivot both to the locked or unlocked position.

15. A freight elevator according to claim 14, characterized in that a pulling and / or pushing means Rope (32) is used, the ends (33, 34) of which are directed opposite the round iron (31) or corresponding Loop around the rollers of the cam carrier (7).

The invention relates to a load bearing, which is composed of individual telescopic slides.

te rail for guiding one or more freight elevator containers has, with ropes guided over the telescopic sections assigned roller or sliding guides and the shortening of the ropes is a simultaneous or successive relative shift the telescopic shots caused to each other and between the first and the second telescopic shot Latching elements can be actuated through which a rooted Relative displacement can be determined and solved again

With fire escapes and sometimes also with goods lifts latch-like locking elements have been proposed, with the help of which between the first and the second telescopic part is locked and when these pawls are connected to corresponding ones Actuating means can also be unlocked.

In the case of goods lifts, which, as mentioned above, have a plurality of telescopic sections, it is not sufficient to define the extended state or the relative displacement between the first and second telescopic sections, because with a total length of the extended telescopic parts of, for example, 30 to 40 meters, the rope elongation becomes uncontrolled Movement of the telescopic end and thus also of the goods lift container with its load leads to damage to scaffolding or components and a risk to the operating personnel. This applies in particular to so-called "inclined elevators" - and this is the aim of the invention - because these elevators have only ladder-like telescopic parts that are guided into one another and are subject to a certain deflection, especially when the elevator is inclined.

A mobile, extendable ladder frame is known, which is roughly rectangular in plan Cross-section and to a certain extent consists of a plurality of extendable ladders parallel to one another. This Due to its construction, ladder frame already has a certain stability, and its lower part is like a carriage trained part is supported on a wide area and has at its uppermost, telescopically extendable Part of a cross arm. The individual telescopic Shots of this frame-like structure are provided with ratchet wheels and locking cones, with their Help they can be locked against each other. Locking wheels and locking cones are to be operated together connected to one another by a wire pull attached to a release lever. So that is any Height adjustment of the upper working platform possible.

Further details about the locking can not be found in the known device (DE-PS 9 21 172). From the entire disclosure content of the aforementioned patent, however, it can be inferred that the wire pull must run from a cable drum, since a single wire pull the locking devices should operate at any height. This in turn means the assignment of a cable drum with exactly maintained preload; d. H. the preload must be maintained so that it is under the release force for the locking cone. This means additional control and measurement effort and can lead to functional difficulties.

For the relevant hour d. T. also includes a device in which a fixed stacking column and a loose Stacking columns are slidably guided against each other (DE-OS 22 31 370); a lever mechanism is provided here, which enables the lift truck arranged on the loose stacking column to cover the essential lifting range moves synchronously with the loose stacking column; only when the upper end of the stroke range is reached is a Lever mechanism effective, with the help of which the lift truck after automatic locking between the Iosen Stacking column and the fixed stacking column by a certain amount in addition to the loose stacking column upwards can drive. A freight elevator addressed with the present invention is in the aforementioned DE-OS 22 31 370 not addressed.

ίο It is the object of the invention in a device of the claimed type the security with regard to the locking of the individual telescopic stages of to improve such freight elevators among themselves, d. H. the extension length of the entire telescope at least

is to be made temporarily independent of the rope tension, however, on a pulling or pulling down from a pre-tensioned cable drum with increasing extension length Tax rope should be waived for the reasons mentioned above. Nevertheless, by one of the operator's booth from the locking device to be actuated on the first telescopic stage automatically a lock all other telescope levels are made possible with each other.

The invention solves the problem posed with the teaching according to claim 1, which is characterized by the features of claim 2 is trained. Each telescopic section is now assigned one of a fixed point from actuatable pivotable body the actuation of all locking elements between the other Telescopic shots possible, so that the respective position of the relative displacement between the telescopic shots can be set independently of the rope tension. By assigning the pivotable Body to the individual telescopic sections, it is possible with the actual actuating means only to operate the swivel body of the first telescopic section, so that this in turn that of the lock The rope serving the next telescopic level is shortened. According to the invention, this can be done as often as required from the telescopic level to be continued at telescopic level without there being a continuous rope with the resulting Disadvantages (storage drum with pre-tensioning, consideration of rope elongation and slack rope etc.) needs.

Due to the special arrangement of the swivel body according to claim 3 in a plane between the rungs, through which the side rails of the individual telescopic sections are connected, these can be designed so that the pivotable bodies do not interfere with each other even when the telescopic parts are completely on top of each other have driven. The teaching according to claim 4 also serves this purpose.

Claim 5 teaches how the pivotable bodies are to be designed so that they can be operated easily by a pull rope or the like. To enable.

Claim 6 teaches a preferred embodiment for the actuation of the first pivotable body, this embodiment, as already indicated, is repeated.

With the characteristic of claim 7, an advantageous embodiment is proposed with the Help runs over a long body that can be swiveled over all guided rope can be dispensed with and each telescopic section has its own rope section

b5 is arranged so that when pivoting the first pivotable Body swivel all other pivotable bodies into the locking position. Complement this the teachings of Claims 8 and 9 rlip anpphpn HaR

the locking elements are locking cams arranged on cam carriers and like these in the sense of the invention are to be arranged. Claim 10 teaches how the movement of the pivotable Body or the roller or sliding block cages is transferred to the cam carrier. This complements the teaching of claim 11, while claim 12 indicates the manner in which unlocking is automatically brought about is when the locking cams briefly except by actuating the main control cable Intervention. The characteristic of the claim deals with the training of the cam carrier 13, while claim 14 the synchronization of the locking and unlocking movements of the two NokkctUräger indicates. This teaching is supplemented by the features of claim 15.

The invention b -ingt for goods lifts and devices of this type that run out and with rope guided over pulleys are retractable, not only the advantage of making the extension length completely independent of the rope tension, but in particular allows the waiver of a pre-tensioning which takes place under precisely defined pretensioning Rope drum. This is particularly important for long extension lengths, as the rope lengths increase as well mean increasing inaccuracy in the detectable measurement of the rope tension. This is not just due to the elasticity of the rope itself, but also due to the hanging rope at different inclines of one Inclined elevator? B. conditional for the transport of building materials

In the solution according to the invention, all are caused by the up and down load, by wind pressure or by other loads occurring stresses from the locking elements between the individual telescopic shots reliably caught.

The drawing shows with

F i g. 1 four laterally offset to one another in plan view illustrated telescopic sections of a telescopic boom forming the rail for load suspension containers Freight elevator,

F i g. 2 is a plan view of the first telescopic section with the actuating means for the lock and the Locking self. in the unlocked state,

F i g. 3 the same telescopic section in the locked position,

F i g. 4 and F i g .. j partial sections in a schematic diagram, around the center of the actuation! for locking and synchronizing the two associated with each shot Explain locking devices,

F i g. 6 and FIG. 7 an addition to FIG. 4 and 5 by showing the corresponding locking position,

F i g. 8 shows a cross section through four telescopic sections according to the invention and which are retracted against one another the resulting position of the locking and actuating means.

The drawing shows with F i g. 1 four telescopic sections la, 16, ix and Xy of a telescopic load elevator in an exploded view, such that the individual sections are shown laterally offset from one another. On the first telescopic section la, a lever 18 is mounted at point 8, to which a pull rope 17 is attached which is attached to the pivotable body 5 at position 24 at the end of the first telescopic section la and guided over a pulley 23 mounted in the bearing block 22 pivotable body 5 is a cable guide body designed as a roller or sliding block cage 15. Correspondingly, the cable section 196 with its end 246 and the cable section 19 * with its end 24 * are displaced on the pivotable body 5. The relocation could, however, also take place directly at item 25 (see Fig. 3).

Between the pivotable body 5 and the cam carriers 7 mounted on axles 27 parallel to the side bars 12, resilient traction means 26 are switched on, which can consist of a cable 28 and a spring 29. The rope 28 is looped around the cam carrier 7 designed as a round iron 31. When the lever 18 is actuated, the pivotable body 5 is pivoted about its axis 10 and the spring 29 is tensioned. This transmits its tensioning force via the cable 28 to the cam carrier 7, which thereby swivels in the locking direction as soon as the locking cams 6 find a free space between the rungs 13 of the next telescopic section. The cam carrier 7 should be as long as possible than the rung spacing.
The roller or sliding block cage 15 contains two sliding blocks or rollers 16, 16 'which are arranged so that a rope guided over them is guided in the starting position with lateral deflection. If the roller cage 15 (pivotable body 5) is pivoted by the pull rope 17, the length of the telescopic section la in FIG. 1 is shortened, for example. 1 drawn rope 196, which is attached to the beginning 21 of the telescopic section 16, guided over the rollers 16, 16 'of the pivotable body 5 at the first telescopic part la, and from there attached via the pulley 23 to the attachment point 246 on the roller and sliding block cage is assigned to this telescopic section 16. The ropes 196 and 19 * are therefore only one rope section which is assigned to the telescopic sections 16 and ix , but these rope sections each run over the rollers 16, 16 'of the respective preceding telescopic section.

When the lever 18 is actuated, not only the pivotable body 5 of the first telescopic part la is pivoted, but also the pivotable body 5 associated with this telescopic part by shortening the rope 196 or 19x associated with the next telescopic part, so that all the telescopic parts are locked together. The last telescopic part Iy then no longer has to have a pivotable body because it is fixed via the locking cams 6 of the preceding telescopic part Ix.

The F i g. 2 shows the side rails 12 with the rungs 13 fastened between them and a pivotable one Body 5, which is designed as a sliding block or roller cage 15, and which is attached to a bearing block 22 on the Axis iö is pivotally attached. The pivotable body 5 is shown in the unlocked position Spring 29 is relaxed. The spring 30, which is designed as a helical spring in the illustrated case, has the Cam carrier 7 pivoted from the locking position into the unlocking position shown

A rope 32 is switched on between the two cam carriers 7 of a telescopic section la to Ix so that that both cam carriers 7 move synchronously in opposite directions of rotation.

The F i g. 3 shows this in FIG. 2 described, however in locking position. A rung 13 'of the next telescopic section is indicated in the drawing This rung engages in the gap between two

h5 locking cam 6,6 'a.

4 shows in a schematic representation a section through two successive telescopic sections la, 16, with Fi g.4 and 5 the unlocking position

tion, while the F i g. 6 and 7 illustrate the locked position.

The F i g. 8 shows the telescopic sections la. Ic, ix and Xy 33,34 in the closed state. The rails for guiding the freight elevator containers are denoted by 2. The flat, pivotable bodies 5 are not significantly thicker than the height of the rungs 13. So they do not interfere with each other. The transmission means, such as, for example, the springs 29, are arranged between the end faces of the rungs 13 and neither protrude downward nor upward and thus cannot hinder the telescopic function of the telescopic sections. The locking cams 6 are U-shaped irons which are welded onto the round iron 31. The round bars 31 are in turn supported via the axles 27 in bearing blocks 35 or in the rungs 13.

List of reference symbols

Xa - first telescopic shot

Xb = second telescopic section

Ix- = penultimate telescope shot

Iy = last telescopic shot

2 = rail for freight elevator container

4 = locking elements

5 = pivotable body 6,6 '= locking cams

7 = cam carrier

8 = fixed point for pull rope 17

9 = telescopic shooting plane

10 = axes for swiveling bodies

11 = extendable end of each telescopic section

ses

12 = side rails

13.13 '= rungs

14 = rope guide body

15 = roller or sliding block cage

16, 16 '= offset rollers or sliding blocks

17 = pull rope as actuation means

18 = lever for actuating cable 17 196 = cable section assigned to the second telescopic section Xb , which is guided over the rollers 16, 16 'of the pivoting body 5 assigned to the first telescopic part la

19 * = the third telescopic section ix associated cable portion about the rollers 16, 16 of the second telescopic part is 1. b associated pivot body 5 out '

20 = end of rope section 19 at the beginning

attached to the respective telescopic section

2! = Beginning of the respective Tclcskop Shots

22 = bearing block for swiveling body S.

23 = pulley mounted in bearing block 22

24 = attached to the pivotable body 5

End of the pull rope 17

246 = attached to the pivotable body 5

End of the rope section 19 £> 24 * = attached to the pivotable body 5

End of rope section 19 *

25 = possible attachment point for end

of the rope section 19, 19Z> and 19 * am pivotable body 5

26 = resilient traction means

27 = axis for cam carrier 7

28 = rope for resilient traction means 26

29 = tension spring for resilient traction means 26

30 = pretensioned spring for cam carrier 7

31 = round iron as cam carrier 7

Rope for synchronizing the movements of the cam carrier 7 End of the rope 32 bearing blocks

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1. Load elevator, which is a guide rail made up of individual telescopic sections one or more freight elevator containers, with ropes assigned to the telescopic sections Roller or sliding guides are guided, and the shortening of the ropes a simultaneous or one after the other occurring relative displacement of the telescopic shots caused to each other and between the first and the second telescopic section locking elements can be actuated, through which a selected one Relative shift that can be fixed or released again is characterized by the following features: