EP1580317A1 - Rope drive with tubular shaft motor - Google Patents

Abstract

A winch drive unit forms part of a paper or carton making assembly. The winch has a quill drive motor (2) with a pulley wheel (5). The motor has a housing (9) around a rotor coupled to the pulley wheel by a spigot (4) from hub (15) to motor shaft (3). The pulley wheel is fully supported by the hollow shaft bearing in the housing. The pulley wheel is a cylinder open at one end that has an internal diameter larger than the motor housing outer diameter. Also claimed is a winch powered conveyer system that transports wet or dry paper from a paper making process to a further process stage.

Description

The invention relates to a cable drive device with at least one Electric motor and at least one pulley for driving at least one rotatably arranged web guiding device for a dry or wet, running material web over a rope, wherein the electric motor is a hollow shaft motor with a housing and a disposed in the housing and with the Hollow shaft connected rotor is, with the pulley through one at its hub arranged and positively engaging in the hollow shaft connecting pin directly connected to the hollow shaft motor, as well as a machine for Treatment of a dry or wet material web, in particular of paper or cardboard, with at least one of such a cable drive device via a rope driven, rotating web guiding device.

The invention relates to a cable drive device according to the species of Claim 1 and of a machine for producing and / or processing a Material web according to claim 10.

In the manufacture and / or treatment of a wet or dry Material web, for example made of paper or cardboard, it is necessary, the Material web for each processing step rotatably arranged, For example, as a cylinder or rollers running web guiding devices respectively. In particular, in the production of paper or cardboard, these must Web guiding devices are driven, otherwise the danger there is that the material web running over the web guiding devices interrupted.

Machines for producing and / or processing dry or wet Webs of cardboard or paper, such as paper machines, Paper finishing machines or paper processing machines have a plurality of powered, rotating web guiding devices, such as For example, drying cylinders, guide rollers, coating rollers, calender rollers, Suction rolls, guide rolls, press rolls, spreader rolls or the like, which respectively relatively high drive power, in particular for starting the Machine, need at low speeds. So far, it is common for the Drive power to provide by electric motors, which you Nominal torque delivered at far higher than the required speeds, between the electric motor and the driven shaft of the Web guiding device, a transmission is arranged, which the speed of the Lowering the electric motor to a level required for the web guiding device.

However, this has the disadvantage that each drive device has its own, expensive, large and heavy gear needed, and that this gear stationary must be arranged with the electric motor, which on the one hand due to the Weight of the consisting of electric motor and transmission drive device not any location without special precautions to support the Drive device can be selected in or on the machine, and on the other hand, due to the size of the gearbox, the accessibility of the machine is restricted for maintenance and inspection work.

From DE 100 25 316 A1 a drive device for rotatably arranged Web guiding devices are known in which a hollow shaft three-phase asynchronous plug-on motor without intermediate transmission directly on the Shaft of a web guide device is attached. This will be on the Gear dispensed and the accessibility of one with such Drive device equipped machine for manufacturing and / or Processing of a dry or wet material web increased.

Another hollow shaft asynchronous motor, directly on the shaft of a Web guiding device of a machine for production and / or processing a dry or wet material web can be arranged, is from the EP 1 248 349 A2.

Some web guiding devices may lack space or due to their Arrangement in the machine not directly, but only over ropes, belts or Chains and the like are driven, these drive means under the Term rope are summarized. The rope is around a pulley on the Hub of the respective web guide device placed and a pulley a cable drive device, so that the web guiding device over the rope can be driven by the cable drive device. A Cable drive device has for this purpose an electric motor, a transmission which the Reduces the speed of the electric motor to the required speed level, as well as a on the output side of the transmission arranged pulley. A rope points compared to the drive via a shaft on the advantage that several Web guiding devices, for example those with a lower Power requirement, without particularly high expenditure of one or more Cable drive device can be driven together by the Sheaves of several web guiding devices from the same rope be entwined.

A disadvantage is also in this prior art, that due to the weight and the dimensions of the known cable drive devices only one Installation directly on the cellar floor in question and beyond the Accessibility of the machine for maintenance and inspection work strong is restricted.

The invention is therefore based on the object, a cable drive device for Drive at least one rotatably arranged web guide device via develop a rope that is easy to manufacture, small dimensions and has a low weight and thus in or on a machine for Production and / or processing of a dry or wet material web can be arranged arbitrarily, with the accessibility of such a Rope drive device equipped machine should be improved.

This object is achieved by a cable drive device according to claim 1 completely solved.

According to the invention, a cable drive device with at least one Electric motor and at least one pulley for driving at least one rotatably arranged web guiding device for a dry or wet, running material web over a rope, whereby the term rope also belts, chains and the like, provided, which are compared to the prior art has the advantage that the electric motor is a hollow shaft motor with a Housing and one arranged in the housing and with the hollow shaft connected to the rotor, the pulley by one at its hub arranged and positively engaging in the hollow shaft connecting pin is directly connected to the hollow shaft motor. The connecting pin can thereby also be a shaft that engages in the hollow shaft and on the pulley is arranged, wherein the connecting pin or the shaft, for example can be connected by means of a clamping set with the hollow shaft. Especially in machines for producing and / or processing dry or wet webs, in particular of paper or cardboard, in which the running web over rotating web guiding devices, such as For example, a rotatably mounted cylinder or a roller, in particular a drying cylinder, a deflection roller, a coating roller, a Calender roll, a suction roll, a guide roll, a press roll, a Spreader roll or the like with large diameters and large inertia, is guided, high torques are especially at startup at low speeds needed. A special feature of a Hollow shaft motor is that such an electric motor its maximum Output torque at very low speeds. By using a Hollow shaft motor for driving such a web guide device can Therefore, in comparison to the prior art on a transmission between Electric motor and pulley are dispensed with, creating a strong Reduction of the design and manufacturing effort for a Such a cable drive device is achieved. In addition, the Cable drive device according to the invention by the elimination of the transmission smaller dimensions and a lower weight compared to the state of Technology, which increases the constructive degrees of freedom in the development a machine equipped with powered web guiding devices in particular for the production and / or processing of material webs Paper or cardboard in relation to the arrangement possibilities of the necessary Significantly increase rope drive devices in such a machine. By the smaller dimensions and lower weight compared to the state of Technique must beyond a cable drive device according to the invention not necessarily be arranged on the basement floor, but can also directly over the housing of the hollow shaft motor or one on the housing arranged adapter on the machine chair or the stationary support be arranged, thereby increasing the accessibility inside the machine elevated.

An advantageous embodiment of the invention provides that the pulley completely on the storage of the hollow shaft in the housing of the Hollow shaft motor is supported, so that acting on the pulley rope forces completely from the storage of the hollow shaft in the housing of the Hollow shaft motor can be added. The hollow shaft motor can due to the larger diameter of the hollow shaft compared to the diameter of the shaft of a solid shaft electric motor with larger bearings be equipped so that also external forces, such as those on the Seilscheibe acting rope forces, on the storage of the hollow shaft in the Housing of the hollow shaft motor can be accommodated.

An advantageous embodiment of the invention provides that the pulley a one-sided open hollow cylinder, which has a larger inner diameter than the Outer diameter of the housing of the hollow shaft motor, wherein at the closed end face of the hollow cylinder along the axis of rotation of the Sheave a protruding into the hollow cylinder connecting pin is arranged, which engages positively into the hollow shaft, so that the over the connecting pin directly connected to the hollow shaft pulley the Hollow shaft motor frontally partially includes. By the pulley the Hollow shaft motor partially includes, is a particularly compact design with achieved small external dimensions, in which all according to the state of Technology hitherto necessary mechanical drive parts between electric motor and pulley can be omitted and the particularly space-saving for example, on the chair or the stationary support inside a machine can be arranged, whereby the construction and the Structure of such a machine can be significantly simplified. The case of the Hollow shaft motor can be in the area that is not from the pulley is included, on the stiffening of the machine or on their stationary support be attached directly or via an adapter. The connecting pin can be tightened by a clamping set in the hollow shaft, creating a easy mounting and maintenance of the hollow shaft motor and pulley is guaranteed independently without the need for special tools for the Assembly or disassembly of the clamping disk and the hollow shaft motor needed become.

An advantageous embodiment of the invention provides that the pulley at least one end-side cooling air opening for passing cooling air from or to the hollow shaft motor away or towards.

Another advantageous embodiment of the invention provides that in or on Housing of the hollow shaft motor at least one opposite the environment and the interior of the housing closed and with a cooling device connectable cooling channel for passing a cooling liquid is arranged. By arranged on or in the housing of the hollow shaft motor Cooling channel for the passage of cooling liquid, the occurring as heat Power loss of the hollow shaft motor can be effectively dissipated, so that the Motor at a low temperature in the housing permanently at rated power can be operated. The liquid cooling also allows that Dissipate the heat without damaging influence on surrounding parts of the Machine for the treatment of a material web, what in particular by the compact dimensions of the cable drive device according to the invention possible installation in the interior of such a machine is required. Of the Cooling channel is preferably made of a non-oxidizing material, so that water can be used as the cooling liquid.

Another advantageous embodiment of the invention provides that on the Sheave facing away from the front side of the hollow shaft motor a Display device is arranged to display the speed of the Hollow shaft motor and the pulley and / or the peripheral speed at least one driven over the sheave web guide device.

An additional advantageous embodiment of the invention provides that on the the pulley facing away from the end of the hollow shaft motor an adjustable Speed control device is arranged to set a desired Speed of the hollow shaft motor and the pulley and / or the Circumferential speed of at least one driven over the sheave Web guiding device and / or the speed of the material web in the Machine.

A particularly advantageous embodiment of the invention provides that the Hollow shaft motor is a hollow shaft three-phase asynchronous motor. Of course, a hollow shaft three-phase synchronous motor can be used.

Another, particularly advantageous embodiment of the invention provides that several similar cable drive devices acting on the same rope can be arranged. Especially with long pitches and high Power requirements, such as in an off-line coater, it can when using only one sheave to unwanted slippage come between rope and pulley, resulting in a demolition of the above Rope drive driven web guide running Material web can cause. This slippage can be through the use of two or more sheaves, which are looped by the same rope on a permissible level can be reduced. According to the state of the art is for the Drive multiple acting on the same rope sheaves so far a transmission used with a Eintrieb- and several output shafts, which of a correspondingly powerful electric motor driven via the input shaft becomes. Hollow shaft motors can be controlled very accurately in their speed, why by the cable drive device according to the invention to a coupling the sheaves acting together on a rope by means of a transmission can be dispensed with, whereby the accessibility and maintainability and the Design and manufacturing costs reduced by omission of the transmission can be. For large rope lengths is by the invention Cable drive device an arrangement of several similar Rope drive devices acting on the same rope at different Positions along the rope possible, so that the tensile forces and the Alternating loads in the rope are reduced and thereby the duration of use and the inspection and maintenance intervals of the rope can be extended.

A machine according to the invention for treating a dry or wet Material web, in particular of paper or cardboard, with at least one over one Rope drivable, rotating web guiding device, according to the genus of Claim 10 is inventively characterized by at least one or in the machine and the web guiding device via a rope driving cable drive device, in which at least one pulley with at least one hollow shaft motor without an interposed gearbox directly connected, wherein the term rope also belts, chains and the like includes.

Further advantages, special features and expedient further education of Invention will become apparent from the further subclaims or their Subcombinations.

Fig. 1

einen Querschnitt durch eine erfindungsgemäße Seilantriebsvorrichtung mit einer über einen Verbindungszapfen direkt mit der Hohlwelle eines Hohlwellenmotors verbundene, das Gehäuse des Hohlwellenmotors stirnseitig teilweise umfassenden Seilscheibe,

Fig. 2

einen Querschnitt durch eine erfindungsgemäße Seilantriebsvorrichtung mit einer über einen Verbindungszapfen direkt mit der Hohlwelle eines Hohlwellenmotors verbundene und einen kleineren Durchmesser als das Gehäuse des Hohlwellenmotors aufweisende Seilscheibe,

Fig. 3

einen Querschnitt durch eine über einen an dem Gehäuse des Hohlwellenmotors angeordneten Adapter auf einen Grundrahmen montierte, erfindungsgemäße Seilantriebsvorrichtung,

Fig. 4

eine Draufsicht auf zwei auf das selbe Seil wirkende und auf einem gemeinsamen Grundrahmen angeordnete, erfindungsgemäße Seilantriebsvorrichtungen, und

Fig. 5

eine perspektivische Ansicht eines Seilantriebs einer Off-line Streichmaschine nach dem Stand der Technik.

The invention will be further explained with reference to the drawings. In detail, the schematic representation in:

Fig. 1

a cross section through a cable drive device according to the invention with a connected via a connecting pin directly to the hollow shaft of a hollow shaft motor, the housing of the hollow shaft motor frontally partially comprehensive pulley,

Fig. 2

a cross section through a cable drive device according to the invention with a connected via a connecting pin directly to the hollow shaft of a hollow shaft motor and a smaller diameter than the housing of the hollow shaft motor having pulley,

Fig. 3

a cross-section through a mounted on a housing of the hollow shaft motor adapter mounted on a base frame, according to the invention cable drive device,

Fig. 4

a plan view of two acting on the same rope and arranged on a common base frame, according to the invention cable drive devices, and

Fig. 5

a perspective view of a cable drive of an off-line coater according to the prior art.

The same reference numerals in the figure designate the same or the same effect Elements.

A cable drive device 1 shown in Fig. 1 consists of a Hollow shaft motor 2 and one directly with the hollow shaft 3 of the hollow shaft motor. 2 via a connecting pin 4 connected pulley 5. The pulley 5 is a unilaterally open hollow cylinder 6, which has a larger inner diameter 7 than has the outer diameter 8 of the housing 9 of the hollow shaft motor 2, wherein on the closed end face 10 of the hollow cylinder 6 along the Rotation axis 11 of the pulley 5 a projecting into the hollow cylinder 6 Connecting pin 4 is arranged, the form-fitting manner in the hollow shaft. 3 engages so that the over the connecting pin 4 directly to the hollow shaft. 3 Connected sheave 5 the hollow shaft motor 2 frontally partially includes. Of the on the hub 15 of the pulley 5 fixed to this connected connecting pin 4 is in the hollow shaft 3 by means of a remote from the pulley 5 Front side of the hollow shaft motor 2 from accessible clamping set 14th recorded.

The pulley 5 is completely over the bearing 12 of the hollow shaft 3 in the housing 9 of the hollow shaft motor 2 supported. The hollow shaft motor 2 has in particular, due to the large diameter 13 of the hollow shaft 3 a large dimensioned storage 12, so that acting on the pulley 5 outer Forces, such as the forces acting on the pulley 5 rope forces can be completely absorbed by the storage 12.

In the housing 9 of the hollow shaft motor 2 is a relation to the environment 16 and the interior 17 of the housing closed and with a not shown Cooling device or a heat exchanger connectable cooling channel 18 to Passing a cooling liquid arranged. By in the housing 9 of the Hollow shaft motor 2 integrated cooling channel 18 for the passage of coolant can the occurring in the hollow shaft motor 2 as heat dissipation effectively be discharged, so that the hollow shaft motor 2 at a low temperature can be operated permanently in the housing 9 at rated power. There one Cable drive device 1 usually with a pull-in speed of 15 Up to 75 m / min is operated, a liquid cooling is particularly suitable to the hollow shaft motor 2, the nominal torque at very low speed gives off, to cool. By the liquid cooling, the hollow shaft motor can. 2 be operated indefinitely in this speed range.

In a cable drive device 1 shown in FIG. 2, the pulley 5 a smaller inner diameter 7 than the outer diameter 8 of the housing 9 of the hollow shaft motor 2. The hollow cylindrical pulley 5 includes the Housing 9 of the hollow shaft motor 2 not, but is in the axial extension of the with the axis of rotation 11 of the pulley 5 identical longitudinal axis of the Hollow shaft 3 is arranged. The connecting pin 4 is on the of the Hollow cylinder 6 opposite side of the end face 10 of the hollow cylinder. 6 arranged.

In a cable drive device 1 shown in Fig. 3 is the hollow shaft motor 2 via a directly on the housing 9 arranged adapter 19 to a Base frame 20 mounted. The base frame is representative of one Foundation for installation of the cable drive device 1 on the basement floor, for the stiffening of a machine for making and / or processing a machine dry or wet web, or for the stationary support of a Such machine or components thereof. At a corresponding executed base frame, the hollow shaft motor 2 also directly without the Adapter 19 are attached to the base frame 20 by the housing 9 of the Hollow shaft motor 2 in the area that is not covered by the pulley 5, is attached to the base frame 20. The cable drive device 1 has with the hollow shaft motor 2 partially comprehensive pulley 5 a particular compact design with small outside dimensions, in which at all to the prior art previously required mechanical drive parts between Electric motor and pulley is omitted and so a special space-saving arrangement inside a machine for manufacturing and / or Processing a dry or wet material web is possible, thereby Design and construction of such a machine can be significantly simplified.

On the pulley 5 facing away from front side of the hollow shaft motor 2 is a Tachometer 21 arranged to indicate the speed of the hollow shaft motor. 2 and the pulley 5 and / or the peripheral speed of at least one via the pulley 5 driven web guide device.

In Fig. 4, a cable drive device 1 is shown, which in particular for a Off-line coater is usable. The rope drive of an off-line coater Due to the long ropes, it requires a stronger wrap the pulley 5. To transfer the required power through the rope to be able to two pulleys 5 together with larger wrap, as needed for a single pulley 5. By arrangement of two identical rope drives 1 side by side on a common Base frame 20 can transmit the required drive power to the cable become. Due to the possible with hollow shaft motors 2, precise speed control is the abandonment of the previously required by the prior art transmission between only one electric motor 2 'and two sheaves 5, as in FIG. 5 shown, possible because a precise speed adjustment of the two Hollow shaft motors 2 is possible.

The invention is particularly in the field of paper machine manufacturing and in the paper making industry.

LIST OF REFERENCE NUMBERS

1

Cable drive device

2

Hollow shaft motor

2 '

electric motor

3

hollow shaft

4

connecting pins

5

sheave

6

hollow cylinder

7

Inner diameter of the pulley

8th

Outer diameter of the housing of the hollow shaft motor

9

Housing of the hollow shaft motor

10

Front side of the hollow cylinder

11

Rotation axis of the pulley

12

Storage of the hollow shaft

13

Diameter of the hollow shaft

14

clamping set

15

hub

16

Surroundings

17

inner space

18

cooling channel

19

adapter

20

base frame

21

speedometer

22

transmission

Claims (10)

Cable drive device (1) with at least one electric motor and at least one cable pulley (5) for driving at least one rotatably arranged web guiding device for a dry or wet, running material web via a cable,
characterized in that the electric motor is a hollow shaft motor (2) with a housing (9) and a in the housing (9) arranged and with the hollow shaft (3) connected rotor, wherein the pulley (5) by its at its hub (15 ) and positively in the hollow shaft (3) cross-connecting pin (4) is connected directly to the hollow shaft motor (2). Cable drive device according to claim 1,
characterized in that the pulley (5) is completely supported by the bearing (12) of the hollow shaft (3) in the housing (9) of the hollow shaft motor (2). Cable drive device according to claim 1 or 2,
characterized in that the pulley (5) is a hollow cylinder (6) open on one side, which has a larger inner diameter (7) than the outer diameter (8) of the housing (9) of the hollow shaft motor (2), wherein on the closed end face (10 ) of the hollow cylinder (6) along the axis of rotation (11) of the sheave (5) into the hollow cylinder (6) protruding connecting pin (4) is arranged, which engages positively into the hollow shaft (3), so that via the connecting pin (4 ) directly connected to the hollow shaft (3) pulley (5) the hollow shaft motor (2) frontally partially includes. Cable drive device according to one of claims 1 to 3,
characterized in that the pulley (5) has at least one end cooling air opening. Cable drive device according to one of the preceding claims,
characterized in that in or on the housing (9) of the hollow shaft motor (2) at least one relative to the environment (16) and the interior (17) of the housing (9) closed and connectable to a cooling device cooling channel (18) is arranged. Cable drive device according to one of the preceding claims,
characterized in that on the pulley (5) facing away from the end face of the hollow shaft motor (2), a display device (21) is arranged for indicating the speed of the hollow shaft motor (2) and the pulley (5) and / or the peripheral speed of at least one of the Sheave (5) driven web guiding device. Cable drive device according to claim 6,
characterized in that on the pulley (5) facing away from the end face of the hollow shaft motor (2) an adjustable speed control device is arranged. Cable drive device according to one of the preceding claims,
characterized in that the hollow shaft motor (2) is a hollow shaft three-phase asynchronous motor or a hollow shaft three-phase synchronous motor. Cable drive device according to one of the preceding claims,
characterized in that a plurality of similar cable drive devices (1) acting on the same rope can be arranged. Machine for treating a dry or wet material web, in particular of paper or cardboard, with at least one rotating web guiding device that can be driven via a cable,
characterized by at least one arranged on or in the machine and the web guiding device driving cable drive device (1) according to one of the preceding claims.

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