DE10350116B3 - Heavy duty industrial roller shutter doors rests on winding shaft that advances and retreats towards the slat deployment slit - Google Patents

Abstract

An industrial roller shutter door rests on a horizontal spindle supported over the door frame by bearings at each end. The shutter slats deploy from the roll through a fixed downwards-directed slit, thereby progressively reducing the radial distance between the outermost slats and the spindle. Each end of the spindle rests in a bearing mount that progressively advances towards the slit as the radial distance reduces. The bearing advancement is synchronised at each end in a symmetrical plane.

Description

The The invention relates to a roll closure, with one on a winding shaft rollable curtain, a support device for supporting a bearing the winding shaft, one of the support device ordered Drive device and a transmission with a transmission device to transfer a rotational movement of an output member of the drive device on a driven unit on the winding shaft.

Especially The invention relates to a roller door, in which a relatively heavy Rolling armor, in the closed state a gate opening closes, on one above the door opening left and right on support devices in the form of consoles mounted winding shaft can be wound. Such Roller shutters are common provided with a geared motor attached to one of the two consoles is attached and over a gearbox the winding shaft for opening and closing the Rolling shutters drives. As a transmission, for example, a chain transmission is used with a chain around one on an output shaft of the geared motor seated drive pinion and a seated on the winding shaft Gear wheel out is.

It is also basically known to arrange the winding shaft slidably on the support means. When winding and unwinding the curtain, the winding radius changes corresponding. Without displacement would become thus the insertion angle Change the curtains provided in the left and right of the closing opening guides. With slidable axis of rotation of the winding shaft, the curtain can also at changing Winding radius as possible Insert in a straight line.

To the Moving the winding shaft on the support means are different Techniques and mechanics known. From WO 00/58592 A1 it is known for the shift to provide a four-joint chain. It is explicitly stated for more details WO 00/58592 A1.

These construction shown in WO 00/58592 A1 works with smaller ones Rolling arm very well. With increasing size and weight of the curtain however, resulted in unpublished trials a deformation of as a support device acting console. This deformation occurring under load can in particular provided with displacement support means to wear, Jamming or other impairments of the sliding mechanism to lead.

Of the Invention is based on the object, a Rollabschluss the beginning mentioned type available to put in which even at lighter or filigree or equipped with pivoting support devices larger and / or heavy hanging driven without functional impairment movable are.

These The object is achieved by a roll closure with the features of the attached claim 1 solved.

advantageous Embodiments of the invention are the subject of the dependent claims.

According to the invention, the transmission device the transmission formed or arranged symmetrically. this happens to a plane of symmetry passing through the support means. The Symmetrieebene lies substantially perpendicular to the axis of rotation the winding shaft.

Of the Invention is based on the finding that a lateral power transmission from the output shaft of the drive to the winding shaft to a horizontal torque leads, that is perpendicular to the opening plane the Rollabschlusses stands. For example, pulls the load strand one as a transmission device used chain of a chain transmission, the winding shaft to the on the support device supported Stock down. This torque must be supported by the Ab be caught, which deforms in the worst case accordingly. Now you can indeed the support device stronger accordingly dimension this would but to a higher one Expense in the production of the support device lead. This is in particular the case when the support device is still a displacement mechanism for the Bearing includes, as described for example in WO 00/58592 A1. The said torque must then be supported by the moving parts, which too high Friction, elevated Wear or worst case even lead to failure or breakage of these parts.

The invention now proposes a balanced force transmission whose axis of symmetry or plane of symmetry passes through the support device. The plane of symmetry extends in particular between attachment points with which the support device is fixedly secured and / or on which a bearing of the winding shaft of whatever kind is supported on the support device. This inventive idea is achieved, for example, by the feature combination indicated in the characterizing part of appended claim 1. Optionally, depending on the type the transmission other symmetries, for example, a symmetry of the output member and / or the driven unit additionally or alternatively provided to the symmetry of the transmission element.

When support means are in a preferred embodiment Consoles provided, which is a displacement of the axis of rotation of the winding shaft for the purpose of adaptation to the respective winding radius. This is for example a joint bracket, preferably one of the in the WO 00158592 A1 described type.

The symmetrical according to the invention power transmission can be achieved in different ways. For example, the support device could be like a frame be trained and the power transmission within the framework. This is with simple support devices a possible one Way, with more complicated ones such as a four-bar console relatively complicated. It is therefore preferred embodiment, with a Plurality of power transmission paths, their about a horizontal, perpendicular to the axis of rotation of the winding shaft Torque generated compensate each other, for example on both sides of the support device at least one transmission element the transmission device is provided. This version is Underlying the idea, the power transmission on both sides of the support device to distribute such a horizontal torque perpendicular to the Closing level of Roll conclusion is, to avoid.

The Invention is particularly advantageous if the entire drive device on the support device is attached. Leave it the entire unit consists of support device with attached drive and supported winding shaft with symmetrical Equipped balanced power transmission.

The Transmission is preferably a positive traction mechanism, ie in particular a chain drive or a toothed belt transmission. When Drive device are preferably electric geared motors used, whose output shaft provided by means of a drive self-locking gear is coupled to an electric motor. at Standstill of Rollabschlusses is thus on the winding shaft Overloading weight of the curtain over the form-fitting Transmission transmitted to the self-locking drive gear and recorded there. To create the symmetry is the output shaft preferably with several drive wheels, such as in particular drive pinions Mistake.

Around a safe, crash-preventing positive power transmission to create, are the drive wheels preferably positively, for example by means of a key, rotatably connected to the output shaft. In a preferred embodiment are not just the transmission links, but also their drive wheels arranged or formed symmetrically to the plane of symmetry.

The transmission device the transmission preferably has a plurality of axially juxtaposed parallel loaded endless draw. This allows for given gear ratios the use of as possible small powered wheels on the winding shaft. If these driven wheels are too big, they could stick out over the winding shaft, and the winding shaft would have to face the opening boundary relined accordingly when the hanging over the entire travel of the roller shutter as vertical as possible in the guides should come in. If possible small sprockets (for example less than about 300 mm in diameter) must be included given gear ratios (e.g., 4: 1 and / or 3: 1) small drive wheels or pinions on the output the drive device can be used. On the other hand, that must Traction means have a very high security against breakage, demanded For example, a sixfold security. For example a chain used as a traction device, so this must be in such a high breakage a big one Have division. The pinions must be correspondingly large, for example are pinions with less than 11 teeth to Time not available in stores. If you use a pinion with 11 teeth and a correspondingly large pitch the chain, then the driven wheels on the shaft at the given gear ratios too large, and you have to with relines work.

These Problems can be solved in an advantageous embodiment of the invention by the plurality of juxtaposed parallel loaded traction means avoid. Since the force is now distributed over several traction devices can, can these are dimensioned accordingly smaller. This leads Chains to be executed at a lower pitch can. Correspondingly smaller are the currently 11-toothed smallest available on the market Pinion executable and can be small accordingly the driven wheels be dimensioned. by the way would one too big Division also cause that the less the teeth, the more uneven the rotational movement becomes Pinion has. A non-uniform Rotary motion means more drive on the entire surface of the Rollbehanges. But if several traction devices are loaded in parallel, can also Drive pinion with more, correspondingly smaller spaced teeth used which contributes to smoothness.

Preferably, a plurality of traction means are respectively provided on both sides of the support means. This plurality of traction means can be formed for example by a double chain. Preference is given to one-piece double chains, as used for example for driving camshafts high-quality engines, are used.

Although also other planes of symmetry are conceivable, as long as only the torque explained above within the support device is caught, it is preferred for reasons of simplicity, if the traction means symmetrical to the plane of symmetry forming the plane of symmetry support means are arranged. Accordingly, it is preferred if the driven Unit a plurality of arranged on or on the winding shaft wheels, such as in particular gears or has toothed pulleys. The majority of driven wheels is preferably formed and arranged symmetrically to the plane of symmetry.

It is thus preferred that both the transmission device as also the output member and the driven unit symmetrical arranged and / or formed.

The Symmetrical training prefers the following exception: If on both sides of the drive device in each case a power transmission takes place, it is preferred that the power transmission on one of the sides Completely form-fitting takes place and the other of the two power transmissions occurs non-positively. The form fit provides optimal security against falling of the Curtain. A traction allows the two transmission links each with the same tensile force to apply the above mentioned Torque completely to be able to eliminate. This solution is achieved in a concrete embodiment preferably in that at least a first or a first group of driven wheels a first transmission member is driven by the transmission and positively connected to the winding shaft and that at least a second or a second group of driven wheels through a second transmission link is driven by the transmission and positively connected to the winding shaft is. Of course could the adhesion also at another point of the power transmission, for example, between the output shaft and sitting on it Pinion be provided. It is preferred that the adhesion to the Provide winding shaft, since there because of the larger diameter of the driven Wheels lighter - for example by means of a clamping sleeve - scored can be.

One embodiment The invention will be explained in more detail with reference to the accompanying drawings. In this shows:

1 an exploded view of a support device for a roll closure in the form of a joint bracket for a motor-driven roller shutter on one side of a winding shaft of the rolling shutter, which is provided with an electric drive;

2a . 2 B in section and in plan view one in the arrangement of 1 usable standard adapter sleeve;

3 a side view of the composite arrangement of 1 in a first operating position;

4 a view like in 3 on the arrangement in a second operating position;

5 a sectional view through the arrangement of 3 and 4 along the line C-C;

6 a section along the line B-B of 5 in the first operating position (corresponding to 3 ); and

7 a section along the line B-B as in 6 in the second operating position (corresponding 4 ).

In 1 is a winding shaft 2 and a support device 4 shown to support the same. The winding shaft 2 is part of a roll closure in the form of a roll-up door. The winding shaft 2 serves to a curtain, not shown, here a door leaf in the form of a roller door, a Rolltorgitters, a roller blind o the like, in the course of opening and closing a door opening also not shown and unwind. The support device 4 supports the winding shaft 2 at an edge region bordering the door opening, for example in the area of a fall 66 (see eg 3 ).

The support device 4 has one in the fall 66 attachable joint console 6 which is constructed essentially as described in WO 00/58592 A1. Accordingly, the hinge bracket 6 in the embodiment shown here two four-bar links 8th on, by means of which a storage for a winding shaft, here one on the joint bracket 6 invisible apron 10 , can be slidably attached. On the apron 10 here is a bearing block 12 for the storage of the winding shaft 2 attached. Also, on the movable apron 10 a drive device in the form of a transmission part 14 and motor arrow 16 provided shaft gate drive 18 attached. The transmission part 14 the Wellentorantriebes has in a conventional manner a self-locking worm gear (not shown).

The transmission part 14 is with a downforce member in the form of an output shaft 20 provided on both sides of the transmission part 14 projects from this and at their free ends with drive wheels in the form of drive pinions 22 is provided with two adjacently arranged sprockets. The drive pinions 22 are how out 3 and 4 can be seen by means of a feather key 24 positive locking against rotation on the output shaft 20 placed.

To form a driven unit of the winding shaft 2 are on a bearing with a smaller diameter bearing part 26 the winding shaft 2 left and right of the bearing block 12 two driven wheels in the form of gears 28 attached, each on its outer circumference with two adjacent sprockets 30 are provided. The pair from the left and right of the bearing block 12 arranged gears 28 forms the driven unit of a traction mechanism 32 that the force from the output shaft 20 with preset transmission ratio (4: 1 or 3: 1) on the winding shaft 2 transfers. A first gear 28a is by means of another feather key 34 (please refer 5 ) on the bearing part 26 the worm shaft 2 mounted rotationally. The second gear 28b is by means of a clamping sleeve 36 non-positively on the bearing part 26 the winding shaft 2 placed.

The traction mechanism 32 has two double chains as transfer elements 38 on, which are shown in the drawings only schematically by double-dashed lines. The double chains each have chain links, which two areas for simultaneous detection of each adjacent sprockets 30 the gears 28 and the sprockets of the drive pinion 22 exhibit. Comparable double chains are used for example for controlling camshafts in engines and are therefore commercially available. The traction mechanism 32 has two of these double chains 38 on, the left and right of the storage, here the apron 10 , run. The drive pinions 22 , the double chains 38 and the gears 28 are symmetrical to a plane of symmetry 40 (please refer 5 ) arranged perpendicular to the axis of rotation 41 the winding shaft 2 through the joint console 6 , more precisely between their articulation points on the fall 66 and their guides for the sliding guide of the apron 10 passes through. In the exemplary embodiment, the plane of symmetry falls 40 with the median plane of the hinge bracket 6 as well as the entire support device 4 together.

For synchronously driving the sliding movement of the winding shaft 2 on the joint console 6 is a second traction mechanism 42 intended. The second traction mechanism 42 has a drive shaft rotatably mounted on the winding shaft 44 and a driven gear 46 and a transmission member in the form of a (single) chain 48 , The driven gear 46 sits on a shaft, one centered in the top of the apron 10 arranged shift transmission 50 drives. The shift gear 50 has next to the drive shaft 52 and a patch mounted thereon, by means of feather key connection positively driven pinion still a deflection shaft 54 with attached deflection pinion 56 and one around the drive shaft 52 and the diversion shaft 54 to a closed loop closed positive traction means 58 ; like another chain or a timing belt. The entire structure of the sliding gear 50 works out best 4 out. To a strand 60 of the traction device 58 is a stationary plate 62 the joint console 6 connected.

For mounting the in 1 shown support device is the hinge bracket 6 with its attachment side 64 attached to the lintel. The output shaft 20 is by means of another keyway with a hollow shaft on the drive gear in the transmission part 14 connected. On the output shaft 20 become the drive pinions 22 by means of the feather key 24 rotatably attached. The entire shaft gate drive 18 gets to the bottom of the apron 10 attached. The bearing block 12 gets on the top of the apron 10 attached. The first gear 28a is by means of the feather key 34 on the bearing part 26 rotatably attached, and the second gear 28b is by means of the clamping sleeve 36 on the other side of the bearing block 12 on the bearing part 26 clamped. For clamping, the clamping sleeve 36 like from the 2a and 2 B shows around the circumference distributed clamping screws, which achieve via wedges a reduction in the inner diameter and an increase in the outer diameter. The drive pinion 44 is by means of a feather key connection on the outermost free end of the bearing part 26 rotatably attached.

The following is with reference to the 3 and 4 explains the function of the roller door described here. 3 shows the position with fully unwound door leaf, ie the closed position. The skirt 10 is here on the joint console 6 under the leadership of the four-link chains 8th very close to the fall 66 been moved. When opening the gate of the shaft gate operator is actuated. He drives the output shaft 20 at. The force is even on the two double chains 38 spread on the gears 28 and thus the winding shaft 2 transfer. Due to the symmetrical power transmission becomes a perpendicular to the door opening and horizontally directed torque in the support device 4 avoided. As a result, lateral loads on the four-link chains 8th avoided.

When turning the winding shaft 2 increases according to the rolled up curtain the winding radius. At the same time via the second traction mechanism 42 with appropriate translation that shift gear 50 driven. This pulls the apron 10 and thus the bearing block 12 with the winding shaft 2 and the shaft gate drive 18 as well as the gears 32 . 42 . 50 from the fall 66 path. The Füh tion of this sliding movement via the four-bar links 8th , 4 then shows the end position with fully opened roller door.

The 6 and 7 show the in the 3 and 4 shown respective end positions of the sliding movement in the section. It is clear the attachment of the strand 60 at the plate 62 as well as the leadership over the four-link chains 8th to see.

In the present embodiment in the form of a roll-up door, the single chain acting on conventional previously known roller doors was replaced by two double chains 38 replaced. The symmetry of the arrangement eliminates the horizontal torque which is perpendicular to the opening plane of the door. In previous attempts, this torque has the joint bracket 6 deformed so that the construction did not withstand.

One strives, as small as possible gears 28 (Less than 300 mm in diameter) to use so that the curtain, so the door leaf, the rolling armor or the like, without relining vertically in guides, such as guide rails (not shown) can enter the left and right of the door opening.

That's why you have to small gear sprockets at given gear ratios (4: 1 and 3: 1) 22 at the output of Wellentorantriebes 18 use. With a required high breaking load for the drive chain (6-fold safety), this leads to a large division if one were to use a single chain. Such a large pitch indicates a sprocket with 11 teeth (sprockets with fewer teeth are not commercially available), that the pitch circle diameter is too large and thus the diameter of the sprockets, so here the gears 28 , In addition, the rotational movement is the more non-uniform the fewer teeth the drive pinion 22 Has. Non-uniform rotational movement means more abrasion on the entire surface of the rolling armor.

• • Kraftschluss, das Lasttrum beider Doppelketten 38 mit der gleichen Zugkraft zu beaufschlagen (nur ein ausgeglichener, hier symmetrischer Kraftfluss eliminiert das erwähnte Drehmoment vollständig) und durch den
• • Formschluss optimale Sicherheit gegen Abstürzen des Rollpanzers.

Both drive pinions 22 on the output shaft 20 are each with a feather key 24 positively secured against rotation. The first sprocket 28a is also with a feather key 34 against twisting on the winding shaft 2 secured. The other sprocket 28b is non-positive with the clamping sleeve 36 fixed on the winding shaft. How to reach through the

• • traction, the load of both double chains 38 to apply the same tensile force (only a balanced, here symmetrical power flow eliminates the mentioned torque completely) and by the
• • Positive locking optimal security against falling of the rolling armor.

As a clamping sleeve 36 Here is a type used in which two conical parts 68 . 69 axially braced against each other.

The above described second traction mechanism with sliding gear and the mechanism given by it is also without the currently in the claims given symmetric power distribution a very interesting Construction.

2

winding shaft

4

support means

6

joint console

8th

Four-bar chain

10

apron

12

bearing block

14

transmission part

16

engine part

18

shaft operator (Driving means)

20

output shaft

22

pinion

24

Adjusting spring

26

bearing part

28

Gears (sprockets)

30

Cassettes

32

traction drives

34

Key Connection

36

clamping sleeve

38

double chain

40

plane of symmetry

41

axis of rotation

42

second traction drives

44

pinion

46

powered gear

48

Chain

50

shift gear

52

drive shaft

54

return shaft

56

return sprocket

58

traction means

60

Trum

62

plate

66

fall

68

conical part

69

conical part

Claims (15)

Roll close, with one on a winding shaft ( 2 ) windable curtain, a supporting device ( 4 ) for supporting a bearing ( 12 ) of the winding shaft ( 2 ) one of the support means ( 4 ) associated drive device ( 18 ) and a transmission ( 32 ) with a transmission device ( 38 ) to transmit a rotational movement of a driven member ( 20 . 22 ) of the drive device ( 18 ) to a powered unit ( 28 . 28a . 28b . 26 ) on the winding shaft ( 2 ), characterized in that the transmission device ( 38 ) to a plane of symmetry ( 40 ) substantially perpendicular to the axis of rotation ( 41 ) of the winding shaft ( 2 ) by the support device ( 2 ) passes through, is symmetrical and / or arranged so as to allow a balanced power transmission. Roll termination according to claim 1, characterized in that the bearing ( 12 ) on the support device ( 4 ) is movably held, so that the position of the winding shaft ( 2 ) is adaptable to the respective winding radius. Roll termination according to claim 2, characterized in that the supporting device ( 4 ) a displacement guide, in particular a four-bar guide ( 8th ), for the warehouse ( 12 ) having. Roll termination according to one of the preceding claims, characterized in that on both sides of the support device ( 4 ) at least one transmission element ( 38 ) of the transmission device ( 32 ) is provided. Roll termination according to one of the preceding claims, characterized in that the drive device ( 18 ) on the support device ( 4 ) is attached. Roll termination according to one of the preceding claims, characterized in that the output member as the output shaft ( 20 ) is formed, which with several drive wheels, in particular drive pinions ( 22 ), as the traction mechanism ( 32 ), in particular as a form-fitting traction mechanism such as chain transmission or toothed belt transmission, trained transmission is provided. Roll termination according to claim 6, characterized in that all drive wheels ( 22 ) positively, in particular by means of a feather key ( 24 ), with the output shaft ( 20 ) are rotatably connected. Roll termination according to one of claims 6 or 7, characterized in that the plurality of drive wheels ( 22 ) symmetrical to the plane of symmetry ( 40 ) are arranged and / or formed. Roll termination according to one of claims 6 to 8, characterized in that the traction mechanism ( 32 ) a plurality of axially juxtaposed parallel loaded Endloszugmittel ( 38 ) having. Roll termination according to claim 9, characterized in that on both sides of the support device ( 4 ) two juxtaposed traction means or in each case at least one multiple chain ( 38 ) are provided with chain links, which can simultaneously detect a plurality of adjacent teeth. Roll termination according to one of the preceding claims, characterized in that the traction means ( 38 ) of the traction mechanism ( 32 ) parallel and symmetrical to the plane of symmetry forming perpendicular to the axis of rotation ( 41 ) of the winding shaft ( 2 ) median plane ( 40 ) of the support device ( 4 ) are arranged. Roll termination according to one of the preceding claims, characterized in that the driven unit ( 28 . 28a . 28b . 26 . 2 ) several side by side on or on the winding shaft ( 2 ) arranged driven wheels, in particular gears ( 28 . 28a . 28b ) or pulleys, has. Roll termination according to claim 12, characterized in that the plurality of driven wheels ( 28 . 28a . 28b ) symmetrical to the plane of symmetry ( 40 ) are formed and / or arranged. Roll termination according to one of the preceding claims, characterized in that at least a first ( 28a ) or a first group of driven wheels by a first transmission member ( 38 ) of the transmission ( 32 ) is driven and positively ( 34 ) with the winding shaft ( 2 ) and at least a second ( 28a ) or a second group of driven wheels by a second transmission member ( 38 ) of the transmission ( 32 ) and with the winding shaft ( 2 ) non-positively ( 36 ) connected is. Roll termination according to one of the preceding claims, characterized in that the transfer device has at least one double chain ( 38 ), preferably several symmetrical to the plane of symmetry ( 40 ) arranged double chains ( 38 ) having.