EP2253571A1 - Dispositif de serrage d'ascenseur et installation d'ascenseur dotée d'un tel dispositif de serrage d'ascenseur - Google Patents
Dispositif de serrage d'ascenseur et installation d'ascenseur dotée d'un tel dispositif de serrage d'ascenseur Download PDFInfo
- Publication number
- EP2253571A1 EP2253571A1 EP09160821A EP09160821A EP2253571A1 EP 2253571 A1 EP2253571 A1 EP 2253571A1 EP 09160821 A EP09160821 A EP 09160821A EP 09160821 A EP09160821 A EP 09160821A EP 2253571 A1 EP2253571 A1 EP 2253571A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elevator
- tensioning
- weight
- tensioning device
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
Definitions
- the present invention relates to elevator tensioning devices and elevator systems with such an elevator tensioning device.
- it relates to elevator tensioning devices for tensioning a governor rope of a speed limitation system.
- An elevator installation generally comprises an elevator cage and at least one counterweight, which are moved in opposite directions in an elevator shaft.
- the elevator car and the at least one counterweight run in or along guide rails.
- an elevator system is usually equipped with a safety gear that is part of a safety device.
- the safety device engages the guide rails of the elevator car and / or the counterweight.
- the speed of movement of the elevator car or the counterweight is slowed down or reduced by setting the safety gear on the guide rail to zero.
- the triggering of the braking or setting takes place by means of a so-called speed limiting device, which constantly monitors the speed of the elevator car or the counterweight and limits it if necessary.
- Fig. 1 shows a corresponding prior art elevator installation 100 with a movable in an elevator shaft 1 elevator car 2, via a support means 3 with a counterweight 4 is connected.
- the support means 3 is driven during operation with a traction sheave 5 of a drive unit 6.
- the elevator car 2 and the counterweight 4 are guided by means of guide rails 7a and 7b extending over the shaft height.
- the elevator installation 100 has a top floor with a top floor door 8, a second upper floor with a second upper floor door 9, further floors with further floor doors 10 and a lower floor with a lowermost floor door 11.
- the mentioned drive unit 6 and a speed limiter system 20 is arranged, which stops the elevator car 2 at too high a speed (called limit speed).
- a double lever is arranged on two opposite sides of the elevator car 2, which are articulated in each case at a pivot point on the elevator car 2. Furthermore, the double lever is fixedly connected to a governor rope 26 of the speed limiter system 20.
- the governor rope 26 is guided in the shaft head 12 via a pulley 21 of the speed limiter system 20 and in a shaft pit 13 via a tension pulley 25.
- the elevator car 2 drives the governor rope 26.
- the speed of the elevator car 2 is monitored via the governor rope 26 by the speed limiter system 20.
- the speed limiting system 20 blocks the cable pulley 21, wherein the elevator car 2 grinds the governor rope 26, for example via the pulley 21.
- the governor rope 26 exerts a pulling force on the double lever.
- a train is transmitted via a linkage to a safety gear 16a.
- the double lever additionally transmits a corresponding movement, for example to a connecting rod. This connecting rod in turn activates the second safety gear 16b.
- the illustrated safety system 200 thus includes the speed limiter system 20, levers and linkage to actuate the safety gears 16a, 16b. In principle, however, it is also possible to transmit the pulling movement of the governor rope 26 by other means to the safety gear 16a, 16b.
- the endless governor rope 26 is tensioned by means of the tensioning roller 25 arranged in the shaft pit 13, wherein a weight arm 24 is articulated at one end to a stationary pivot point A1 (also called first horizontal axis). At the other end, the weight arm 24 carries a tension weight 35.
- the suspension means 3, as well as the governor rope 26, may be a steel wire or aramid rope, a belt or a wedge or V-ribbed belt.
- Fig. 2 Further details of a prior art speed limiter system 20 are shown.
- an upper part 28 of the speed limiter system 20 is shown at the upper shaft end and in the region of the shaft pit a lower part 27 of the speed limiter system 20 (here referred to as tensioning device 22) can be seen.
- tensioning device 22 Above the elevator car 2 sits a rope brake 19, which here interacts with the suspension element 3 (of which only a short distance is indicated here).
- a safety gear 16 with, related to Fig. 1 mentioned, linkage and rods.
- the stationary pivot A1 (in Fig. 2 not clearly visible) is here in the region of the lower end of the guide rail 7a.
- FIG. 3 Further details of a previously known tensioning device 22 of a speed limiter system 20 are shown.
- the tensioning device 22 here comprises a fastening element 29, which may be fastened to the guide rail 7a, for example with two screws.
- the fastening element 29 is perpendicular to the guide rail 7a here.
- On the fastening element 29 is a bearing body 29.1 for receiving the tension roller 25 (shown only hinted here) attached.
- the horizontal axis of rotation D1 for rotatably supporting the tension roller 25 is supported by the bearing body 29.1.
- the bearing body 29.1 is pivotally attached to the fastening element 29 with a first horizontal axis A1. At the right end, the bearing body 29.1 merges into a weight arm 24. In the area of the extremal end of the weight arm 24, a tension weight 35 is attached. The corresponding attachment point is here designated 23.1.
- a length of the limiter rope can change, usually by lengthening.
- the governor rope 26, which is in Fig. 3 is indicated, showing strong fluctuations.
- the tensioning device 22 of the speed limitation system 20 pivots upwards and downwards, as indicated by the double arrow P.
- This up and down movement is in Fig. 3 also indicated by two dashed boundary lines L1, L2.
- the bearing body 29.1 including tension pulley 25, weight arm 24 and tension weight 35 move accordingly up and down.
- the tension weight 35 can reach a maximum upper position Pm and a maximum lower position Pu, which is in Fig. 3 is shown by dashed outlines of the clamping weight 35.
- the stroke between Pm and Pu can be up to 555 mm in the example shown.
- the distance Ab between the tension weight 35 and the governor rope 26 is too small in such a device.
- the cable lock which is used to close the governor rope 26 to an endless loop and connect to the linkage of the safety gear, then has the tendency to collide with the tension weight 35, which is absolutely undesirable.
- such a clamping device requires a large vertical pivoting range.
- an elevator tensioning device which comprises a parallelogram lever device with tensioning element.
- the parallelogram lever device is in the region of one end about two horizontal axes in a vertical plane laterally pivotable and in the region of another end, the parallelogram lever device receives the clamping element or the clamping weights.
- a tensioning roller, around which a rope to be tensioned circulates, is fastened in a region between the two ends on the parallelogram lever device with a horizontal axis of rotation.
- An elevator system is characterized in that it is equipped with a speed limiter system comprising a speed limiter, a speed limiter cable and an elevator tensioning device according to the invention.
- This elevator tensioning device has a parallelogram lever device with tensioning element.
- the parallelogram lever device is laterally pivotable in the region of one end about two horizontal axes in a vertical plane, and in the region of another end the parallelogram lever device receives the tensioning element.
- a tensioning roller, around which a rope to be tensioned circulates, is fastened in a region between the two ends on the parallelogram lever device with a horizontal axis of rotation.
- the clamping element can be placed largely arbitrary, since only the point of connection of the clamping element at the other end of the Parallelogrammhebelvorraum is crucial for the interpretation of the induced clamping force, and the required vertical pivoting space.
- the space requirements of Elevator tensioning device can be optimized.
- Another benefit is that the applied clamping force remains essentially constant over a total usable stroke range.
- the parallelogram lever device comprises two lever arms, which lie parallel to one another in a vertical plane in the mounted state.
- the lever arms can thereby be carried out substantially identical to the same bearing locations. This is particularly favorable in the production.
- the tension roller is mounted with the horizontal axis of rotation on a lower lever arm of the two lever arms.
- the rope lock can be moved far down in this solution, which allows a good use of space.
- a basic structure of an upper lever arm can be designed identical to the lower lever arm, wherein in the upper lever arm only an installation of a rotation axis is omitted.
- one or both lever arms has a plurality of holes to allow adjustment of an effective lever arm length.
- the clamping element is a tension weight, which is laterally pivotally mounted in the region of the other end about two horizontal axes in the vertical plane on the Parallelogrammhebelvorraum, so that the tension weight is moved horizontally parallel during pivoting.
- the tension weight does not require additional pivoting space, as it retains its horizontal position.
- the tension weight is composed of several part weights.
- a residual safety factor for friction on the pulley, or a slipping force can be detected.
- the slipping force is determined according to a clamping force. A halving of the clamping weight force causes approximately a halving of the resulting slipping force.
- the tension weight, or its part weights are arranged laterally next to one or both of the lever arms in the vicinity of the tensioning roller. This makes it possible to make optimum use of a space, depending on the available space, and furthermore the connection point of the tensioning element at the other end of the parallelogram lever device is decisive for the tensioning force design.
- the tensioning weight is fastened to the parallelogram lever device by means of a supporting body.
- a supporting body can possibly even be designed as a carrying basket for receiving loose weight material such as steel scrap.
- the elevator tensioning device is used as a speed limiter tensioning device of an elevator installation and the cable, which is tightened by means of the tensioning roller, is a speed limiter cable.
- Such an elevator installation further includes at least one elevator car which is movable up and down along a conveyor line and a speed limiter system which includes a speed limiter, the speed governor cable and the elevator tensioning device as previously illustrated.
- the Fig. 4 shows a particularly preferred embodiment of the invention. Shown is an elevator clamping device 22 with a tension roller 25, which serves to tighten a rope 26 of an elevator installation 100.
- This rope 26 may be, for example, the speed governor cable 26 of a speed limiter system 20.
- the tensioning device 22 comprises a parallelogram lever device 30 with a so-called tensioning element 23.
- This tensioning element 23 provides the force required to tension the rope 26.
- Either only one tensioning weight 35 is used as the tensioning element, or more than one tensioning weight 35 serves as the tensioning element 23.
- a spring element as Insert clamping element 23.
- a combination of at least one tension weight 35 and at least one spring element serve as a tensioning element 23.
- the parallelogram lever device 30 is pivotable about two horizontal axes A1, A2 in the region of one end E1. This pivoting movement takes place in a vertical plane VE. That is, the parallelogram lever device 30 is laterally pivotally arranged.
- the vertical plane VE lies in Fig. 4 in the drawing plane.
- the parallelogram lever device 30 receives the mentioned clamping element 23.
- a tensioning weight 35 is shown which serves as a tensioning element 23.
- the tension roller 25 is here attached in a region between the two ends E1, E2 on the Parallelogrammhebelvoruze 30 with a horizontal axis of rotation D1.
- Fig. 3 also indicated by four dashed boundary lines L3 - L6.
- the boundary lines L3 and L4 indicate the angular range in which an upper lever arm 32 of the parallelogram lever device 30 can move.
- the boundary lines L5 and L6 indicate the angle range in which a lower lever arm 33 of the parallelogram lever device 30 can move.
- the two lever arms 32, 33 together with tension roller 25 and tension weight 35 move up and down accordingly.
- the tension weight 35, a maximum upper position Pm and a maximum lower Position Pu reach what is in Fig. 4 is shown by dashed outlines of the clamping weight 35.
- the stroke between Pm and Pu can be up to 555 mm in the embodiment shown.
- the distance Ab between the tension weight 35 and the governor rope 26 remains sufficiently large in this embodiment. A collision of the cable lock with the tension weight 35, which is used to close the governor rope 26 to an endless loop, thus can not occur.
- the two lever arms 32, 33 of the Parallelogrammhebelvorraum 30 are in the assembled state parallel to each other in the vertical plane VE.
- the tension roller 25 is mounted with the horizontal axis of rotation D1 on the lower lever arm 33 of the two lever arms 32, 33, as in Fig. 4 shown.
- At least one of the two lever arms 32, 33 a plurality of holes to allow an adjustment of the effective lever arm length effective.
- both lever arms 32, 33 are provided with such holes to allow a uniform adjustability.
- a corresponding embodiment is in Fig. 5 indicated.
- a Parallelogrammhebelvorraum 30 is shown, the lever arms 32, 33 each have three holes in the end region E2. If the tension weight 35 together with the support body 31 is fixed in the leftmost holes, the distance Ac is smaller than when the tension weight 35 together with the support body 31 is fixed in the rightmost holes.
- the elevator tensioning device 22 is preferably designed such that the tensioning element 23 engages Tension weight 35 is (see Fig. 4 and Fig. 5 ), which is laterally pivotally attached to the parallelogram lever device 30 in the region of the end E2 about two horizontal axes B1, B2 in the vertical plane VE. This attachment is made so that the tension weight 35 is moved horizontally parallel during pivoting. That is, the tension weight 35 retains alignment during pivoting. There is no additional pivoting range required for the actual tension weight 35, since it retains its horizontal position over the entire pivoting range. A space requirement for the clamping device is thus optimized.
- the tension weight 35 may, depending on the embodiment, be composed of several part weights. Preferably, an even number of clamping weights 35 is used to ensure a symmetrical design. It is an advantage of this arrangement that by removing one of the part weights a simple traction detection is possible.
- the tensioning weight 35 can also be arranged laterally next to or alongside two lever arms 32, 33 in the vicinity of the tensioning roller 25, as in FIG Fig. 6 indicated. To make room for the tension roller 25, the tension weight 35 can be moved with a distance to the rear. In Fig. 6 is indicated that the tension weight 35 is located behind the tension roller 23.
- the support body 31 may for example be equipped with a spacer (not shown).
- the arrangement shown has the advantage that the distance Ad is significantly smaller than the distance Ac in Fig. 5 ,
- tension pulley 25 As shown in FIG Fig. 9 in synopsis with Fig. 8 is shown to insert. These pulleys may be attached at appropriate points of the parallelogram lever device 30. This results in a smaller height.
- the elevator tensioning device 22 is preferably used as a speed limiter tensioning device of an elevator installation 100.
- the rope 26, which is tightened by means of the tension pulley 25, is a speed limiter cable 26.
- the two lever arms 32, 33 of the Parallelogrammhebelvorraum 30 are, as already mentioned parallel to each other in a vertical plane VE.
- This vertical plane VE is perpendicular to the shaft bottom 13 and perpendicular to a guide rail 7a of the elevator installation 100.
- the parallelogram lever device 30 can preferably be fastened to a guide rail 7a of the elevator installation 100 by means of a fastening element 29.
- the elevator tensioning device 22 may additionally or alternatively comprise a spring arrangement 34 to a tensioning weight 35.
- This spring assembly 34 is attached to a stationary point of the elevator installation 100, either to allow a spring force to act on the Parallelogrammhebelvorides 30 in addition to the weight of the clamping weight 35, or to apply a spring force instead of the weight force.
- a corresponding device is in Fig. 7 indicated schematically.
- a tension spring which is fastened in the region of the shaft pit 13 can be attached to the support body 31.
- This tension spring serves as a spring arrangement 34, which exerts a tensile force on the support element 31.
- the tension roller 25 is attached to the upper lever arm 32.
- the elevator tensioning device 22 may alternatively, as in FIGS. 8 and 9 shown, instead of the tension roller 25 may be provided with a roller carriage 25a.
- the roller carriage 25a includes side plates advantageously having two bearings D1a, D2a.
- the first bearing D1a is mounted in the lower parallel lever 33 and the second bearing D2a is mounted in the upper parallel lever 32.
- the arrangement of the two parallel levers 32, 33 corresponds essentially to the preceding examples.
- the roller carriage 25a itself includes a plurality of small deflection rollers 25a2, which essentially determines a deflection radius of the cable 26. If necessary, the small deflection rollers 25a2 can be enclosed by a circumferential band 25a3.
- This band 25a3 is for example a plastic bandage, for example made of polyurethane, whereby an ideal guide bandage for the rope 26 can be provided.
- the arrangement shown of the roller carriage 25a with the two bearing points D1a and D2a allows a parallel guide not only the actual tension weights 35, but also the roller carriage 25a.
- a cable end connection can be brought as close as possible to the elevator tensioning device, as in the Fig. 8 seen.
- This allows a space requirement of the elevator tensioning device to be optimized.
- Fig. 8 an alternative embodiment of the clamping weights 35 is further shown.
- a substantially rectangular partial weight 35 is held in a holder 31.
- the holder 31 includes the required bearings for guiding the tension weight in the parallelogram.
- the shape of the clamping weights here is arbitrary and interchangeable between the embodiments shown.
- Fig. 10 is the embodiment of Fig. 8 shown in a plan view. It can be seen here that in the example the parallel levers 32, 23 are divided into rear parallel levers 32h, 33h and front parallel levers 32v, 33v. This enables a particularly stable guidance of the tension roller / roller carriage and the tension weights. Further, in this example, the tensioning weight 35 is divided into two partial weights 35.1, 25.2, which are fixed in the common holder 31. This allows a test of the reduced tension device by, for example, removing one of the part weights for a test operation. This can be sufficient proof of sufficient security in the clamping system.
- Fig. 11 shows a further alternative arrangement of the part weights 35.1, 35.2.
- the tension weight, or its part weights laterally adjacent to the parallel levers 32, 33 approximately in the areas of the tension roller, or the roller carriage 25a arranged.
- the horizontal axes B1, B2 which form the bearing points of the tension weight in the parallel levers in this case remain at the to the embodiment of Fig. 8 to 10 identical positions. Therefore, the clamping force behavior of these embodiments remains identical.
- This design allows a particularly compact design in height and a length dimension.
- the dimensions Ac, Ad determine as desired.
- roller carriage 25a of Fig. 8 to 10 can also be used in the other embodiments or the tension roller 25 of the preceding embodiments may also be used instead of the roller carriage.
- the Spannpreferablysformen and arrangements under the embodiments can be replaced by analogy.
- the described embodiments have the advantage that they can be used without difficulty even in confined spaces.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09160821A EP2253571A1 (fr) | 2009-05-20 | 2009-05-20 | Dispositif de serrage d'ascenseur et installation d'ascenseur dotée d'un tel dispositif de serrage d'ascenseur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09160821A EP2253571A1 (fr) | 2009-05-20 | 2009-05-20 | Dispositif de serrage d'ascenseur et installation d'ascenseur dotée d'un tel dispositif de serrage d'ascenseur |
Publications (1)
Publication Number | Publication Date |
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EP2253571A1 true EP2253571A1 (fr) | 2010-11-24 |
Family
ID=41132231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09160821A Withdrawn EP2253571A1 (fr) | 2009-05-20 | 2009-05-20 | Dispositif de serrage d'ascenseur et installation d'ascenseur dotée d'un tel dispositif de serrage d'ascenseur |
Country Status (1)
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EP (1) | EP2253571A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103213887A (zh) * | 2013-04-26 | 2013-07-24 | 苏州富士电梯有限公司 | 一种铰链式张紧装置固定件 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54143565U (fr) * | 1978-03-28 | 1979-10-05 | ||
JPH107339A (ja) * | 1996-06-18 | 1998-01-13 | Hitachi Building Syst Co Ltd | エレベータのガバナロープテンション装置 |
EP1298083B1 (fr) | 2001-09-28 | 2005-11-23 | Inventio Ag | Dispositif pour invalider le parachute d' un ascenseur |
DE202005016080U1 (de) | 2005-10-11 | 2005-12-15 | Bode Components Gmbh | Spannsystem für den Seilzug eines Geschwindigkeitsbegrenzers für Aufzüge |
EP1748104A1 (fr) | 2004-05-10 | 2007-01-31 | Coop, Orona S. | Cable et courroie pour limitateur de vitesses d'ascenseurs et poulies associees |
EP1900673A1 (fr) | 2005-07-05 | 2008-03-19 | Mitsubishi Denki Kabushiki Kaisha | Dispositif à poulie de tension pour câble de commande d ascenseur |
-
2009
- 2009-05-20 EP EP09160821A patent/EP2253571A1/fr not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54143565U (fr) * | 1978-03-28 | 1979-10-05 | ||
JPH107339A (ja) * | 1996-06-18 | 1998-01-13 | Hitachi Building Syst Co Ltd | エレベータのガバナロープテンション装置 |
EP1298083B1 (fr) | 2001-09-28 | 2005-11-23 | Inventio Ag | Dispositif pour invalider le parachute d' un ascenseur |
EP1748104A1 (fr) | 2004-05-10 | 2007-01-31 | Coop, Orona S. | Cable et courroie pour limitateur de vitesses d'ascenseurs et poulies associees |
EP1900673A1 (fr) | 2005-07-05 | 2008-03-19 | Mitsubishi Denki Kabushiki Kaisha | Dispositif à poulie de tension pour câble de commande d ascenseur |
DE202005016080U1 (de) | 2005-10-11 | 2005-12-15 | Bode Components Gmbh | Spannsystem für den Seilzug eines Geschwindigkeitsbegrenzers für Aufzüge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103213887A (zh) * | 2013-04-26 | 2013-07-24 | 苏州富士电梯有限公司 | 一种铰链式张紧装置固定件 |
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