EP0151427B1 - Appareil de contrôle pour ressort d'équilibrage - Google Patents

Appareil de contrôle pour ressort d'équilibrage Download PDF

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Publication number
EP0151427B1
EP0151427B1 EP85100621A EP85100621A EP0151427B1 EP 0151427 B1 EP0151427 B1 EP 0151427B1 EP 85100621 A EP85100621 A EP 85100621A EP 85100621 A EP85100621 A EP 85100621A EP 0151427 B1 EP0151427 B1 EP 0151427B1
Authority
EP
European Patent Office
Prior art keywords
spring
pawl
catch
torsion
shaft
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.)
Expired
Application number
EP85100621A
Other languages
German (de)
English (en)
Other versions
EP0151427A3 (en
EP0151427A2 (fr
Inventor
Michael Dipl.-Ing. Hörmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoermann KG Brockhagen
Original Assignee
Hoermann KG Brockhagen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19843402343 external-priority patent/DE3402343A1/de
Application filed by Hoermann KG Brockhagen filed Critical Hoermann KG Brockhagen
Priority to AT85100621T priority Critical patent/ATE48670T1/de
Publication of EP0151427A2 publication Critical patent/EP0151427A2/fr
Publication of EP0151427A3 publication Critical patent/EP0151427A3/de
Application granted granted Critical
Publication of EP0151427B1 publication Critical patent/EP0151427B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1253—Counterbalance devices with springs with canted-coil torsion springs
    • E05D13/1269—Spring safety devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/003—Anti-dropping devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1253—Counterbalance devices with springs with canted-coil torsion springs
    • E05D13/1261—Counterbalance devices with springs with canted-coil torsion springs specially adapted for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Definitions

  • the invention relates to a spring monitoring device for a pretensioned torsion spring of a door, a door or the like, in particular as a weight compensation spring for a one-part or multi-part overhead door leaf or a roller door curtain, to prevent the door leaf from falling if the spring breaks.
  • Spring monitoring devices of the type in question here - US-A-2 878 865, SE-A-341 681 and the unpublished NL-A-8 202 877 and WO-A-8 501 543 - work with a separate spring device or with a gravity-actuated release element, the force of which is released when the monitored torsion spring breaks and is stored up to that point acts on a catch element and, in the event of the torsion spring breaking, transfers it to a catch position in which the blocking device prevents the door leaf from falling.
  • This separate energy accumulator for the actuation of the catching element causes corresponding costs and, depending on the design, harbors the risk that in the normal operating state of the torsion spring a malfunction (broken spring) of this additional intended energy accumulator will not be noticed and will not be available in the event of the torsion spring breaking.
  • the invention has for its object to ensure the monitoring of the torsion spring in a spring monitoring device of the type mentioned, in the simplest possible manner and in particular in the case of using the torsion spring for weight compensation of a door leaf reacting so quickly that the door leaf as soon as possible after breakage the torsion spring is blocked.
  • This object is achieved by the features specified in claim 1.
  • the tension sensor provided for this purpose in the spring monitoring device according to the invention is arranged in the area which holds one end of the prestressed torsion spring.
  • the spring presses against a stop with the force corresponding to its tension, via a bolt or the like, and flips back with this spring end when the spring breaks. If one arranges support surfaces on the holding device in both directions of movement, i.e. system under pressure with unbroken spring and movement from this system in the opposite direction in the event of spring breakage, then the pressure changes occurring there can be recorded and converted into signals, for example by using strain gauges. These change their electrical resistance at low elongation or compression and can thus transform a voltage change in the holding area into an electrical signal.
  • the movement of the spring end in the event of spring breakage can be used to trigger a mechanical transmission of movement, for example the actuation of an electrical switch, a pneumatic or hydraulic pressure transmitter or the like.
  • This movement of the spring end in the event of spring breakage can, when the tension sensor is designed as a mechanical locking mechanism, in particular also be used directly to trigger a door leaf movement or to prevent it by a safety catch.
  • a particular application of the torsion springs in question here is to compensate for the weight of a door leaf which is at least partially moved vertically between the closed and open positions and which can be constructed in one or more parts, i.e. an overhead door, a roller door, a lifting door or the like.
  • a door leaf which is at least partially moved vertically between the closed and open positions and which can be constructed in one or more parts, i.e. an overhead door, a roller door, a lifting door or the like.
  • d. H. Break in its weight compensation device or drive device make sure that the door leaf is stopped as soon as possible in its movement.
  • slack rope monitoring devices are used, and centrifugal safety devices have also been proposed.
  • a slack rope safety device when arranging several torsion springs to compensate for the door leaf weight on a common continuous torsion shaft, which carries rope drums at both ends, on each of which a rope can be wound up and unwound, that with one end on the associated one Side area of the bottom edge of the door leaf or the like is fixed, the breakage of only one of the torsion springs does not sufficiently reduce the tension in the ropes in order to trigger the catching device monitoring the rope tension. Due to the breakage of one of the torsion springs, the equilibrium ratio between the spring leaf and the door leaf weight is disturbed in such a way that the door leaf moves downwards accelerated, as a result of which the falling distance from the spring break is traversed relatively quickly. At least this is undesirable. Also, centrifugal force-controlled safety devices only respond when the falling door leaf has passed a certain distance, which is usually larger than permitted.
  • a voltage sensor used for such purposes can be designed in such a way that the spring break determined by it is clearly used to block the door leaf movement. This can be done by utilizing a signal of the type mentioned at the outset to actuate a catch device which is provided in particular in the lower door leaf area and which is then triggered in particular electrically, pneumatically or the like.
  • the voltage sensor is designed as a mechanical locking mechanism, such that the monitored spring end moves a mechanical member, such as a bolt, over a distance in the event of breakage due to reaction force, thereby releasing a catching member. which acts on another component for blocking the door leaf movement, in particular for blocking the rotary movement of the torsion shaft.
  • the catch element can be designed as a spring-loaded, pivotably mounted pawl which, when released, engages under spring force in the component which is designed as a ratchet wheel and is arranged on the torsion shaft in a manner fixed against relative rotation. If the spring is not broken, this pawl is kept out of engagement with the pawl wheel in its operating position by the mechanical locking mechanism or the bolt.
  • Catch devices are generally constructed so that the catch member in the catch position comes into engagement with a component - for example a perforated strip - and thus prevents the closing movement of the door leaf, while the door leaf movement is not blocked in the opening direction, i. H. the catch member springs back from the catch position in this latter movement.
  • the pawl-ratchet wheel catcher described above also works when the ratchet wheel teeth are sawtooth-shaped and therefore urge the ratchet pawl into the disengaged position in the direction of rotation associated with the opening movement of the door leaf.
  • the blocking between catch element and component in the relative movement direction between these parts corresponding to the closing movement of the door leaf is sufficient. If the torsion spring breaks, however, the positive engagement of the catch member is initiated immediately, and the positive connection between the catch member and the component or the pawl and the ratchet wheel has such an impact that counter-movement phenomena in the opening direction can occur, which cancels and detaches the catch condition a "flattem " of the moving parts, possibly even causing the catch to slide into the next catch opening.
  • the catch device is arranged in the form of a pawl and ratchet wheel on the torsion shaft on which the drums for the supporting cables of the door leaf are arranged in a torsion-proof manner and into which the torsion spring initiates the torsional tension required to compensate for the door leaf weight
  • reaction movements occur in the event of spring breakage which, owing to the elasticity and inertia of the connected components, can lead to pendulum movements and thus also to back-turning movements of the cable drums
  • Urde observed that the rope can jump from the drum or move to one of the neighboring tracks of the drum, which leads to a further lowering of the door leaf, since the drums are conical due to the balance of the force-displacement characteristics of the springs. If the door leaf is lowered on one side, it can jam, making it very difficult to move the door leaf out of this position, even if only for the provisional operation until the broken spring is repaired.
  • these circumstances are taken into account by designing the attack or engagement between the catching member and the component in such a way that their relative movement to one another is prevented in both directions. This ensures that pendulum movements are kept away from the door leaf or the elements holding it. This applies both to the arrangement of the catching device or a part thereof, for example the catching member on the door leaf itself, and also in the event that the catching device is arranged on the torsion shaft near one end of the torsion spring to be monitored.
  • the catch member can be a translationally or rotatably movable member, the component moved relative to it can be an elongated strip or a wheel.
  • the catching device In principle, it is possible to design the catching device to work in a non-positive manner, but mostly the positive engagement between the catching member and the component is provided. If the safety gear is arranged on the torsion shaft, the rope drum, which is arranged on the torsion shaft in a torsion-proof manner, can no longer perform any movements after engagement of the safety gear in the catching position, i.e. also not in the opposite direction to the closing movement of the door leaf, thereby preventing the suspension cable from being lifted out of the drum grooves becomes.
  • the engagement surfaces of the catch member and the component or the catch pawl and the ratchet wheel are selected so that forces exerted on these flanks act upon the catch member as far as possible into the catch position, in both possible relative movement directions. This applies to both the translational and the rotatory design of the catch element.
  • the catch member is designed as a pivotable catch pawl
  • the position of the pivot axis is to be selected so that the forces exerted on the catch pawl by the engagement in the component or the ratchet wheel result in a torque about the pivot axis which acts on the lever in the catch position
  • an unlocking device is preferably provided which enables the catching element to be brought into the operating position in a targeted manner. This can cause a broken spring a door leaf can be opened and closed until the time of repair - for example with the help of a forklift. Since only a few of the torsion springs usually provided break, in any case initially only one, it is thus possible to specifically release the catching device assigned to the broken spring.
  • FIG. 1 shows the one lateral end region of a torsion spring door leaf weight compensation device, as is used in connection with, for example, a roller door or overhead sectional door.
  • the shaft holder attachment designated 1 is located at the other end, not shown, of the torsion shaft 2 in a mirror-symmetrical design.
  • At least two torsion springs are held on the shaft, which are connected to the shaft in a torsion-proof manner in their area facing the shaft center. Only a region of one of the torsion springs 3 adjoining the shaft holder is shown.
  • This area of the torsion spring 3 is held in a manner not shown on an internal cone which has a decreasing diameter towards the end of the spring 3, not shown.
  • the cone 4 is rotatably mounted on the shaft.
  • a cable drum 5 is held on the latter in a rotationally fixed manner.
  • a rope 6 can be wound up and unwound onto this rope drum, which is fixed with its free end in a manner not shown in the lower side edge region of a door leaf, also not shown.
  • a ratchet wheel 7 is fixed in a rotationally fixed manner on the shaft 2 by means of a screw 8.
  • the pawl wheel 7 is assigned a pawl 9 which is rotatably attached to the shaft holder 1 in an end region facing away from the pawl wheel 7.
  • the pivot bearing is carried out via a screw bolt 10 which engages in a «radially elastic sleeve».
  • This sleeve serves as a damping device in such a way that an impact load exerted on the pawl leads to radial cushioning of this sleeve, as a result of which corresponding shock absorption is achieved.
  • Such a damping can also be achieved differently, in particular by means of a holder for the bearing screw 10 in the shaft holder 1 which can be displaced in a correspondingly damped manner.
  • the end region 11 of the torsion spring 3 assigned to the illustrated shaft end, which is supported by the shaft holder on both sides of the cable drum or the ratchet wheel, has, for example, an eyelet or the like on the associated end 12 of this spring 3, in which a bolt 13 in not is specified in more detail. This can be done, for example, by screwing.
  • the adjacent wall of the shaft holder attachment 1 is provided with a holding area 16 which has an elongated hole 14.
  • the bolt 13 projecting axially from the end 12 of the spring passes through this elongated hole 14 and is secured against slipping out of it by means of a holding plate 15 which is arranged on the spring 3 side of the shaft holder part having the holding region 16.
  • the holding plate extends diametrically to the shaft diameter, so that in the lower part of the figure another slot can be provided, through which the connection to the spring can be established a further time.
  • the bolt 13 protrudes over the holding plate 15 in the direction of the cable drum 5 with an area 19 which, in the operating position shown, that is to say with the spring not broken, engages under the pawl nose 20 of the pawl 9 such that it cannot engage in the ratchet wheel 7.
  • the pawl is biased by a compression spring 22 in the direction of engagement with the ratchet wheel, the compression spring being supported on a holding part 21 fixed to the shaft holder.
  • the opposite narrow end faces of the elongated hole 14 serve as a stop 16 or counter-stop 17 for the bolt 13, which bears under the force of the tensioned, unbroken torsion spring 3 under appropriate pressure against the stop 16 and holds the pawl 9 in disengagement. If the torsion spring 3 breaks, the reaction forces or stored forces cause the bolt 13 in the exemplary embodiment shown to be removed clockwise from its support on the stop 17 and flung against the counter-stop 18. As a result, the pawl 9 is released and moves under the force of the compression spring 22 into engagement with the ratchet wheel, whereby the shaft is prevented from further rotation and thus the downward run of the rope 6, on which the door leaf is held, is stopped. This happens after only a fraction of a revolution of the shaft, so that a very low fall height of the door leaf is guaranteed from the spring break.
  • the above-mentioned spring monitoring device naturally also works by controlling the door leaf movement by hand.
  • FIGS. 2 to 4 show a lateral end region of a torsion spring door leaf weight compensation device, such as is used in connection with, for example, a roller door or overhead sectional door.
  • the shaft holder designated 31 is located at the other, not shown, end of the torsion shaft 32 in a mirror-symmetrical design.
  • At least two torsion springs are held on the torsion shaft, which are connected to the torsion shaft in a torsion-proof manner in their region facing the shaft center. Only a region of one of the torsion springs 33 adjoining the shaft holder is shown.
  • This region of the torsion spring 33 is held in a manner not shown on an internal spring holding body 43 which can have a decreasing diameter towards the end of the torsion spring 33 (not shown) and thus the shape of a Has cone.
  • the spring holding body 34 is rotatably mounted on the torsion shaft 33.
  • a cable drum (not shown) is arranged in a torsion-proof manner.
  • a rope which is also not shown, can be wound up and unwound onto this rope drum, and its free end is fixed in the lower side edge region of a door leaf which is also not shown.
  • the end 35 of the torsion spring 33 which faces the spring holding body 34 is suspended in a fastening tab 36 which in turn is fastened to the spring holding body 34 in such a way that the spring end 35 cannot free itself from this fastening on the spring holding body 34.
  • a ratchet wheel 37 is fixed on the torsion shaft 32 in a rotationally fixed manner with the aid of screws 38, as can also be seen in FIGS. 3 and 4.
  • the ratchet wheel 37 is assigned a catch pawl 39 which is pivotably mounted about a pivot axis 40 (FIGS. 3 and 4), which is fixed at both ends in the region of the legs of a bow-shaped holder 41.
  • the bow-shaped holder 41 is braced in its thigh region with the aid of connecting webs 42 and is firmly connected to the shaft holder 31, for example with the aid of screw connections 43 in the region of the shaft bearing of the shaft holder 31.
  • the shaft holder 31 and the bow-shaped holder 41 are on the wall anchored above the door opening to be locked.
  • the swivel mounting of the catch pawl can be made impact-damped, specifically in the area of the bearing of the catch pawl itself or in the area of the holder of the swivel axis.
  • the catch pawl 39 is prestressed with the aid of a torsion spring 45, which is wound around the pivot axis, in the direction of assuming the catch position (FIG. 4).
  • a torsion spring instead of a torsion spring, another spring, in particular a helical spring, can be used, which is prevented in a known manner against lateral breaking out by means of telescopic guidance, so that it still works reliably even after a break.
  • the spring holding body 34 which is freely rotatably mounted on the torsion shaft, has bolts 46, for example screw bolts, in two diagonally opposite edge regions, which are designed to project axially parallel to the torsion shaft 32 towards the ratchet wheel 37 and are recessed at corresponding locations in the adjacent leg of the bow-shaped holder 41 , pass through elongated holes 57 - FIGS. 3 and 4 - which extend in the circumferential direction around the shaft.
  • the bolts 46 are each provided with a collar which engages over the edge regions of the respectively associated elongated hole.
  • Figure 3 shows the safety gear in the operating position, i. H. with existing spring tension or spring preload.
  • the torsion spring 33 When the torsion spring 33 is unbroken, the end shown is supported in a fixed manner via the spring holding body 34 and its bolt 46 in one end region of the elongated holes 57 and thus on the bow-shaped holder 41 in the installed state.
  • the region of the leg of the bow-shaped holder 41, in which the elongated hole 57 closest to the catch pawl 39 is located, is referred to as the holding region 58.
  • the catch pawl 39 In this position, with the spring not broken, the catch pawl 39 is supported by a latching surface 59 of the projection 49 on the bolt 46 closest to the catch pawl, as shown in FIG. 3.
  • the catch pawl 39 is disengaged from the ratchet wheel 37.
  • the torsion shaft 32, the ratchet wheel 37 fixed on this and the rope pulley also attached to it can rotate under tension and relaxation of the torsion spring, so that the rope held on the rope Door leaf can move between the open and closed position, for example by a drive. If the torsion spring 33 breaks, the spring holding body 34 and thus the bolts move more or less violently due to the reaction force of the spring, depending on the spring tension, from the system shown in FIG. 3 at one end of the elongated holes to the other end thereof, as shown in FIG 4 is reproduced.
  • the bolt 46 closest to the catch pawl 39 thus releases the latching surface 59, so that the catch pawl 39 can move under the force of the spring 45 upon engagement with the ratchet wheel 37.
  • the torsion shaft 32 Due to the breakage of the torsion spring 33 and the torque that is exerted on the torsion shaft 32 via the ropes and the cable drums, the torsion shaft 32 rotates counterclockwise in the example shown until the catch pawl 39 can engage in engagement with the ratchet wheel. Due to the relatively large number of points of engagement of the ratchet wheel 37 distributed over the circumference, the torsion shaft 32 can only rotate by a relatively small angle, so that the door leaf, the weight of which is no longer fully compensated by the spring force, only by a small amount Can move downwards.
  • the rebounding bolt 46 which is adjacent to the catch pawl 39, must not push it back into the operating position or out of engagement with the ratchet wheel 37. For this reason, in the region of the protrusion 49 of the catch pawl 39, a baffle surface 60 pointing into the path of movement of the bolt 46 is provided, onto which the bolt 46 strikes in backward movement, specifically with regard to the geometrical arrangement such that a torque about the pivot axis of the catch pawl 40 is exercised, which acts on the catch in the catch position shown in Figure 4. Thus, once the catch position of the catch pawl 39 has been assumed, it is independent of the subsequent movements of the bolt 46.
  • the catch pawl is transferred from the position with the spring not broken to the catch position during the first displacement movement of the bolt 46 and a further movement of whatever kind is intercepted by the torsion shaft and thus the cable drum.
  • the embodiment shown here works with a voltage sensor as a mechanical locking mechanism in the form of the bolt 46 and the catch pawl 39. If the catch device is not arranged in the vicinity of the spring end to be monitored, for example in the area of the door leaf, an electrical, pneumatic and hydraulic is provided in the holding area 58 Switch arranged or a strain gauge attached, which indicates the displacement movement of the bolt 46 and converts it into a trigger signal for the safety gear. If the spring breaks, for example, the door leaf can be caught immediately.
  • a door leaf intercepted in the event of a spring break should still be able to be opened and closed, for example with the aid of a forklift or the like, until the spring break is eliminated.
  • the pawl must be disengaged from the ratchet wheel so that it and the torsion shaft and the cable drums can be rotated.
  • an unlocking device is provided which comprises a shaft 63 which is mounted on the bow-shaped holder 41 and on which a cam 62 is held against rotation in the area of the catch pawl. With the help of a handle 64, the shaft and thus the cam 62 can be pivoted. In this case, the cam 62 engages a return projection 61, which is assigned to the pawl or is formed on the pawl.
  • the cam 62 can be pivoted against the lever 64 by pivoting it Return approach 61 move and take this, whereby the FangkJinke 39 is forced into its operating position.
  • more than one torsion spring is arranged on the torsion shaft. Since each of these springs has to be monitored, a corresponding number of interception devices are provided. To move the door leaf when a spring breaks, all of these catch pawls must be disengaged from the associated ratchet wheels. For this reason, the shaft 63 of the unlocking device is guided parallel to the torsion shaft 32 over all safety devices, it carries as many cams as safety catches, and of course in an appropriate assignment.
  • the ratchet wheel 37 is diagonally divided into two halves, which can be assembled using connecting flanges.
  • the bow-shaped holder 41 comprises the catch pawl 39 with its spring and the associated part of the unlocking device. This makes it very easy to assemble the entire monitoring device retrospectively on an existing torsion shaft. To do this, it is only necessary to detach the spring holding body 34 from its connection with the shaft holder 31 which had existed up to that point.
  • the screw connections 43 and the bolts 46 are axially aligned with one another, so that the bolts 46 can now be inserted into the same openings in the released spring holding body which is shifted to the left in FIG. 2, via which the spring holding body has so far been connected to the shaft holder.
  • the two-part ratchet wheel 37 is placed on the torsion shaft in the space thus freed between the spring holding body 34 and the shaft holder 31 and fastened and connected to the shaft in a rotationally fixed manner by means of the screws 38.
  • the bow-shaped holder 41 is brought with the catch kink 39 and the ratchet wheel between them into the position shown in FIG. 2 and connected to the shaft holder or the wall at the place of attachment.
  • the spring holding body 34 is now inserted with its bolt 46 into the elongated holes 57 and fixed there with the aid of the holding plates 47. In this state, the end region 48 of the one bolt 46 engages on the latching surface 59 of the spring catch pivoted back into the operating position. The system is now ready for operation.
  • the bow-shaped holder is mirror-symmetrical with respect to a plane running parallel to its legs and centrally between them. Only the arrangement of the spring 45 can be excluded. The elongated holes 57 are congruent in both legs.
  • This bracket-shaped holder with all its parts can be used for both left-hand and right-hand attachment to the shaft holder. This means that one and the same device can optionally be used for one of the torsion springs 33 of the torsion shaft 32.
  • the tooth flank surfaces 56 of the teeth 54 of the ratchet wheel are designed accordingly. and undercut either in the direction of the radius of the ratchet wheel or even better to this radial direction.
  • a rectangular tooth gap 55 was provided, which therefore means that tooth flank surfaces 56 run undercut with respect to the respective radial direction.
  • the nose 51 of the catch pawl engages in these tooth gaps, provided in a first embodiment with nose surfaces 53 which, in the catching position, run approximately parallel to the tooth surfaces 56.
  • the catch pawl 39 is provided with a groove-shaped recess 50, the side surfaces 52 of which in the catching state run approximately parallel to the tooth flank surfaces 56. Accordingly, a tooth 54 of the ratchet wheel 37 is received in the groove 50 of the catch pawl 39 and thus the ratchet wheel is locked against rotational movements in both directions of rotation.

Claims (29)

1. Appareil de contrôle d'un ressort de torsion, utilisé sous précontrainte, pour un portail, une porte ou un équipement analogue, notamment comme ressort d'équilibrage de poids pour un panneau de portail en une seule pièce ou en plusieurs pièces, susceptible d'être déplacé par dessus la tête, ou pour une armature de portail roulant, pour empêcher la chute du panneau de portail en cas de rupture du ressort, appareil dans lequel il est prévu, pour au moins une des deux parties terminales (11) du ressort (3), un détecteur de contrainte (13) sollicité dans un sens par le ressort lorsque celui-ci est sous contrainte, et en cas de rupture du ressort, sollicité uniquement par la réaction de celui-ci dans le sens opposé et libérant alors un dispositif de blocage (7, 9) du panneau du portail.
2. Appareil selon la revendication 1, caractérisé en ce que le détecteur de contrainte est constitué par des jauges de contrainte.
3. Appareil selon la revendication 1, caractérisé en ce que le détecteur de contrainte est constitué par un commutateur électrique.
4. Appareil selon la revendication 1, caractérisé en ce que le détecteur de contrainte est constitué par un organe mécanique (13, 46).
5. Appareil selon la revendication 4, caractérisé en ce que l'organe mécanique (13, 46) est, d'une part, fixé à l'une (12) des extrémités du ressort de torsion (3, 33) et est, d'autre part, en appui, sous la contrainte du ressort non rompu (3, 33), contre une butée (17, 59) d'une zone de maintien, tandis qu'en cas de rupture du ressort, il est susceptible d'être déplacé en avant de la butée sur une certaine distance.
6. Appareil selon la revendication 5, caractérisé en ce que le guidage sur la distance de déplacement est constitué par une boutonnière (14, 57) dans la zone de maintien (16, 58).
7. Appareil selon une des revendications 4 à 6, caractérisé en ce que l'organe mécanique (13) revêt la forme d'un encliquetage pour un organe d'arrêt (9, 39) guidé de façon à pouvoir se déplacer entre une position de fonctionnement et une position d'arrêt, et qui, lorsque l'organe mécanique (13, 46) prend appui contre la butée (17), est maintenu par cet organe mécanique dans la position de fonctionnement, tandis que lors du déplacement de l'organe mécanique (13, 46) en avant de la butée (17), il est libéré en direction de la position d'arrêt, dans laquelle cet organe d'arrêt (9, 39) vient en prise contre un élément constitutif (7, 37) monté de façon à pouvoir se déplacer d'un mouvement de va et vient par rapport à cet organe d'arrêt au cours des mouvements de fermeture et d'ouverture du panneau de portail.
8. Appareil selon la revendication 7, caractérisé en ce que l'organe d'arrêt (9, 39) est sollicité en direction de sa position d'arrêt par un ressort précontraint (22, 45).
9. Appareil selon la revendication 8, caractérisé en ce que l'organe d'arrêt revêt la forme d'un cliquet d'arrêt (9, 39) monté de façon à pouvoir tourner qui, dans la position de fonctionnement, est hors de prise avec l'élément constitutif revêtant la forme d'une roue (7, 37) de cliquet d'arrêt, tandis que dans la position d'arrêt, il est en prise avec celle-ci dont il interrompt le mouvement de révolution, cette roue de cliquet d'arrêt (7, 37) étant solidaire d'un arbre (2, 32), dont l'autre extrémité du ressort de torsion (3, 33) est, au -moins dans l'état de fonctionnement, solidaire en rotation.
10. Appareil selon la revendication 9, caractérisé en ce que l'arbre (2, 32) est solidaire en rotation de l'un au moins de deux tambours (5), tambour sur lequel est maintenu et est susceptible d'être enroulé, un câble (6) ou un autre organe de transmission d'effort, tel qu'une chaîne, dont l'autre extrémité est reliée au panneau de portail ou à l'armature de portail roulant, de préférence à la partie inférieure de ceux-ci dans la position de fermeture.
11. Appareil selon une des revendications 6 à 10, caractérisé en ce que l'organe mécanique revêt la forme d'un axe (13) qui est raccordé à l'une (12) des extrémités du ressort de torsion (3) à contrôler, et qui, pénétrant à partir de là dans la zone de maintien (16) à la sortie de la boutonnière (14), est garanti contre un glissement hors de cette boutonnière (16) par une plaque d'arrêt (15) sur le côté de la zone de maintien opposé au ressort de torsion (3), cet axe comportant une partie d'extrémité (19) faisant saillie au-delà et par laquelle, lorsque le ressort n'est pas rompu, il vient supporter le bec (20) du cliquet d'arrêt (9).
12. Appareil selon une des revendications 7 à 10, caractérisé en ce que l'entrée en prise de l'organe d'arrêt (39) sur l'élément constitutif (37) est telle qu'elle interrompt le déplacement relatif dans les deux sens.
13. Appareil selon la revendication 12, caractérisé en ce que l'organe d'arrêt (39) est muni d'un bec (51) qui, dans la position d'arrêt, vient en prise dans au moins un évidement d'une série d'évidements (55) ménagée dans l'élément constitutif (37), ces évidements comportant, dans les deux ?enent relatif, des surfaces d'arrêt (56) qui font face aux surfaces (53) du bec respectivement tournées vers elles.
14. Appareil selon la revendication 13, caractérisé en ce que l'organe d'arrêt revêt la forme d'un cliquet d'arrêt (39) et l'élément constitutif celle d'une roue de cliquet (37), qui comporte un tracé périphérique en forme de méandre avec des dents (54) et des intervalles entre deux (55).
15. Appareil selon la revendication 14, caractérisé en ce que les faces de dents (56) orientées vers la périphérie s'étendent en direction diamétrale de la roue de cliquet (37).
16. Appareil selon la revendication 14, caractérisé en ce que les faces de dents (56) orientées vers la périphérie s'étendent en contre-dépouille par rapport à la direction diamétrale de la roue de cliquet (37).
17. Appareil selon la revendication 16, caractérisé en ce que les intervalles entre dents (55) de la roue de cliquet (37), vus en direction axiale de celle-ci, sont rectangulaires.
18. Appareil selon une des revendications 14 à 17, caractérisé en ce que le bec (51) du cliquet d'arrêt (39) comporte des surfaces (53) orientées vers la périphérie de la roue de cliquet (37) qui, dans la position d'arrêt, sont à peu près parallèles aux surfaces de dents (56) respectivement voisines.
19. Appareil selon une des revendications 14 à 17, caractérisé en ce que le cliquet d'arrêt (39) comporte un évidement (50) en forme de gorge s'étendant en direction axiale de la roue de cliquet (37), évidement dans lequel vient en prise, dans la position d'arrêt, une dent (54) de la roue de cliquet (37), et dont les faces latérales (52) orientées vers la périphérie sont à peu près parallèles aux faces de dents (56) respectivement voisines.
20. Appareil selon une des revendications 12 à 19, caractérisé en ce que l'organe d'arrêt ou le cliquet d'arrêt (39) comporte une excroissance (49) avec une surface d'encliquetage (59), sur laquelle s'applique et prend appui, dans la position de fonctionnement du cliquet d'arrêt (39), un organe mécanique (46) d'un détecteur de contrainte revêtant la forme d'un encliquetage mécanique, ce détecteur étant fixé, d'une part, à l'une (35) des extrémités du ressort de torsion (33) et prenant appui, d'autre part, sous la contrainte du ressort non rompu (33) contre une butée de la zone d'arrêt (58), tandis qu'en cas de rupture du ressort, il est susceptible d'être déplacé en avant de la butée sur une certaine distance.
21. Appareil selon la revendication 20, caractérisé en ce que l'excroissance (49) comporte une surface d'impact (60) qui, dans la position d'arrêt du cliquet d'arrêt (39), s'oppose au déplacement en retour de l'organe mécanique (46) déplacé en avant de la butée.
22. Appareil selon une des revendications 12 à 21, caractérisé en ce que la roue de cliquet (37) est solidaire en rotation de l'arbre de torsion (32) sur lequel l'autre extrémité du ressort de torsion (33) est maintenue, tout au moins dans l'état de fonctionnement, en étant bloquée en rotation, tandis qu'au moins un des deux tambours prévus est solidaire en rotation de l'arbre (32), tambour sur lequel est maintenu, et est susceptible d'être enroulé, un câble ou un autre organe de transmission d'effort, tel qu'une chaîne, dont l'autre extrémité est reliée au panneau de portail ou à l'armature de portail roulant, de préférence à la partie inférieure de ceux-ci dans la position de fermeture, et le cliquet d'arrêt (39) est monté sur un support (41) en forme d'étrier, qui reçoit entre ses branches la roue de cliquet (37) et qui, vu en direction axiale de l'arbre de torsion (32), doit être placé entre le ressort de torsion (33) et un support d'arbre (31) portant un palier d'arbre de torsion.
23. Appareil selon une des revendications 12 à 22, caractérisé en ce que la roue de cliquet (37) est divisée diagonalement.
24. Appareil selon une des revendications 12 à 23, caractérisé en ce que l'organe mécanique revêt la forme d'un axe (46) qui est fixé à un corps de maintien (34) du ressort, ce corps, éventuellement de forme conique, maintenant l'extrémité (35) du ressort de torsion (33) et étant monté de façon à pouvoir tourner sur l'arbre de torsion (32), tandis qu'à partir de ce corps de maintien (34) l'axe (46) traverse la boutonnière (57) dans la zone de maintien (58) du support en forme d'étrier (41), cet axe étant garanti contre un glissement hors de la boutonnière (57) par une plaque d'arrêt (47) sur le côté de la zone de maintien (58) opposé au ressort de torsion (33), et cet axe comportant une partie terminale (48), faisant saillie au-delà, et qui, lorsque le ressort de torsion (33) n'est pas rompu, est en prise avec la surface d'encliquetage (59) du cliquet d'arrêt (39) et maintient ce cliquet dans la position de fonctionnement.
25. Appareil selon une des revendications 12 à 25, caractérisé en ce qu'il est prévu un dispositif de déverrouillage (61 à 64) qui est susceptible d'être réglé entre une position de repos et une position de déverrouillage, et qui, dans cette dernière, vient en prise avec un organe de déverrouillage (62) sur l'organe d'arrêt ou cliquet d'arrêt (39), en amenant celui-ci dans sa position de fonctionnement et en l'y maintenant.
26. Appareil selon la revendication 25, caractérisé en ce que le dispositif de déverrouillage (61 à 64) comporte un arbre (63) avec au moins une came (62) en tant qu'organe de déverrouillage, cette came venant en prise contre un appendice de rappel (61) du cliquet d'arrêt (39).
27. Appareil selon les revendications 25 et 26, caractérisé en ce que, lorsqu'il y a plusieurs organes d'arrêt ou cliquets d'arrêt (39), il est prévu pour chacun d'eux un organe de déverrouillage (62), tous ces organes de déverrouillage (62) étant montés sur un organe de manoeuvre commun (63, 64).
28. Appareil selon une des revendications 1 à 27, caractérisé en ce qu'il est prévu un interrupteur de courant d'alimentation pour une commande électrique d'un panneau de portail, l'organe d'actionnement de cet interrupteur étant placé en face d'une surface d'actionnement de l'organe mécanique ou axe (13, 46) ou de l'organe d'arrêt ou cliquet d'arrêt (9, 39).
29. Appareil selon une des revendications 7 à 28, caractérisé en ce que le montage de l'organe d'arrêt ou cliquet d'arrêt (9, 39) comporte un amortissement au choc, par exemple grâce à une douille d'amortissement qui comporte une partie d'anneau circulaire en caoutchouc ou en un matériau analogue, ou bien grâce à une fixation amortie déplaçable sur la partie constitutive (1, 41) comportant la zone de maintien (16, 58).
EP85100621A 1984-01-24 1985-01-22 Appareil de contrôle pour ressort d'équilibrage Expired EP0151427B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85100621T ATE48670T1 (de) 1984-01-24 1985-01-22 Federueberwachungsgeraet.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19843402343 DE3402343A1 (de) 1984-01-24 1984-01-24 Federueberwachungsgeraet
DE3402343 1984-01-24
DE19843425909 DE3425909A1 (de) 1984-01-24 1984-07-13 Federueberwachungsgeraet
DE3425909 1984-07-13

Publications (3)

Publication Number Publication Date
EP0151427A2 EP0151427A2 (fr) 1985-08-14
EP0151427A3 EP0151427A3 (en) 1986-02-12
EP0151427B1 true EP0151427B1 (fr) 1989-12-13

Family

ID=25817846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100621A Expired EP0151427B1 (fr) 1984-01-24 1985-01-22 Appareil de contrôle pour ressort d'équilibrage

Country Status (5)

Country Link
EP (1) EP0151427B1 (fr)
DE (2) DE3425909A1 (fr)
DK (1) DK164749C (fr)
ES (1) ES8607467A1 (fr)
NO (1) NO165256C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19861233B4 (de) * 1998-07-27 2006-04-20 Hörmann KG Brockhagen Federüberwachungsgerät
DE202009001535U1 (de) 2009-02-06 2009-05-07 Alcomex Veren B.V. Federaufnahme für eine Torsionsfeder
CN102806919A (zh) * 2012-07-30 2012-12-05 华南农业大学 一种用于防钢丝绳松的可移动式驱动装置
EP4001563A1 (fr) * 2020-11-19 2022-05-25 Nathalie Sieuw Ensemble de maintien en tension d'un ressort de porte sectionnelle
BE1028812B1 (fr) * 2020-11-19 2022-06-20 Nathalie Sieuw Ensemble de maintien en tension d'un ressort de porte sectionnelle

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
SE457814B (sv) * 1986-08-07 1989-01-30 Crawford Door Prod Anordning vid ett fjaederbrottskydd foer en takskjutport eller liknande
USRE40001E1 (en) * 1995-06-01 2008-01-15 The Chamberlain Group, Inc. Jack shaft garage door operator
US5743046A (en) * 1995-06-01 1998-04-28 The Chamberlain Group, Inc. Jack shaft door garage operator
DE19855697C2 (de) * 1998-07-27 2003-02-27 Hoermann Kg Federüberwachungsgerät
EP1102910B1 (fr) 1998-07-27 2002-04-10 Hörmann KG Brockhagen Appareil de surveillance de ressort
AU2003209903A1 (en) * 2002-03-19 2003-09-29 Canimex Inc. Safety braking device for counterbalancing system of garage doors and the like
US7254868B2 (en) 2004-12-27 2007-08-14 Wayne-Dalton Corp. winding and anti-drop assembly for door counterbalance system
ITMC20050089A1 (it) * 2005-09-06 2007-03-07 Gaposa Srl Dispositivo di sicurezza, anti-caduta, per serrande avvolgibili, compensate con molle di torsione
PL2669456T3 (pl) 2012-05-29 2015-10-30 Assa Abloy Entrance Systems Ab Mechanizm zabezpieczający na wypadek pęknięcia sprężyny do systemu drzwi dzielonych
US20150059989A1 (en) * 2013-08-27 2015-03-05 Herman Gutierrez Overhead door spring alert safety system
WO2019025522A1 (fr) 2017-08-04 2019-02-07 Assa Abloy Entrance Systems Ab Ensemble comprenant un logement avec un mécanisme de protection contre la rupture de ressort d'équilibrage pour un système de porte, tel qu'un système de porte sectionnelle, et système de porte comprenant l'ensemble
JP7367658B2 (ja) * 2020-11-17 2023-10-24 トヨタ車体株式会社 車両ドア用保持装置

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Publication number Priority date Publication date Assignee Title
US2878865A (en) * 1956-02-09 1959-03-24 United States Steel Corp Safety stop for roll-up door
NL8202877A (nl) * 1982-07-15 1984-02-01 Cornelis Willem Nissen Beveiligingsmechanisme voor een met medewerking van de zwaartekracht naar de sluitstand bewegende deur.
DE3378836D1 (en) * 1983-09-26 1989-02-09 Crawford Door Ab An arrangement for preventing a door from dropping down precipitately
DE3402343A1 (de) * 1984-01-24 1985-08-01 Hörmann KG Brockhagen, 4803 Steinhagen Federueberwachungsgeraet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19861233B4 (de) * 1998-07-27 2006-04-20 Hörmann KG Brockhagen Federüberwachungsgerät
DE202009001535U1 (de) 2009-02-06 2009-05-07 Alcomex Veren B.V. Federaufnahme für eine Torsionsfeder
CN102806919A (zh) * 2012-07-30 2012-12-05 华南农业大学 一种用于防钢丝绳松的可移动式驱动装置
CN102806919B (zh) * 2012-07-30 2014-12-10 华南农业大学 一种用于防钢丝绳松的可移动式驱动装置
EP4001563A1 (fr) * 2020-11-19 2022-05-25 Nathalie Sieuw Ensemble de maintien en tension d'un ressort de porte sectionnelle
BE1028812B1 (fr) * 2020-11-19 2022-06-20 Nathalie Sieuw Ensemble de maintien en tension d'un ressort de porte sectionnelle

Also Published As

Publication number Publication date
DE3574752D1 (de) 1990-01-18
DK29685A (da) 1985-07-25
NO165256C (no) 1991-01-16
EP0151427A3 (en) 1986-02-12
DK164749C (da) 1992-12-28
DK29685D0 (da) 1985-01-23
NO850253L (no) 1985-07-25
ES539760A0 (es) 1986-05-16
DE3425909A1 (de) 1986-01-23
ES8607467A1 (es) 1986-05-16
DK164749B (da) 1992-08-10
NO165256B (no) 1990-10-08
EP0151427A2 (fr) 1985-08-14

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