FI119687B - Arrangement in the elevator speed limiter - Google Patents

Description

ARRANGEMENT IN THE LIFT SPEED LIMITER

The invention relates to an arrangement in the elevator speed limiter set forth in the preamble of claim 1.

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Elevators shall, as required by safety regulations, be fitted with equipment to monitor the speed of the car and to stop the movement of the car if the maximum speed specified is exceeded. Such equipment generally includes at least a speed limiter which controls that the maximum speed is not exceeded, and a velcro coupled to the speed limiter, which is connected to the speed limiter and stops the elevator car when the speed limiter is activated. Elevator speed limiters are generally mechanical rope systems with, for example, a speed limiter wheel rotatably mounted at the top of the elevator shaft and a diverting pulley at the bottom of the elevator shaft and arranged around a speed limiter rope with a closed loop. The speed limiter is connected to the elevator car's gripper by this rope, which moves as his-20 trolley moves around the speed limiter wheel and the flywheel. If the car travels at too high a speed, the speed limiter stops the movement of the speed limiter wheel at the top of the elevator shaft, and also the speed limiter. ·: The rope stops moving the speed limiter rope to pull the • · · • · and the elevator car movement stops.

There are several known solutions for stopping the speed limiter wheel in overspeed situations. Many known solutions are based on centrifugal forces. In these solutions, as the speed increases beyond a certain predetermined limit, the centrifugal force pushes, for example, a suitable brake member onto the speed limiter wheel, whereupon the speed limiter wheel stops. sähtyy. In such solutions, the maximum speed allowed • · · * .. 35 can be adjusted, for example, by means of suitable springs, which resist centrifugal force and hold the brakes.

Ji * got off the speed limiter wheel. When the speed becomes too high, the centrifugal force will exceed the spring force and the brake will stop the speed limiter wheel. The problem with such solutions, however, is that the maximum allowed speed is difficult to set exactly as desired. A further problem is that the adjustments may not remain the same, due, inter alia, to the fact that the speed limiter is very rarely activated, which may, for example, cause the spring characteristics of the device to change over time. Another problem is that centrifugal force speed limiters cannot be made very small because their sensitivity becomes too large when the size is reduced. The use of space in the elevator shaft is generally minimized, so it would be advantageous if the speed limiter could be made as small as possible.

From US 5617933 A, AT 412967 B and JP 2005/104610 A, speed limiters are known in which the rotation of a permanent magnet and a speed denier produces a force effect on the lever or the like to effect the operation of the speed limiter.

The object of the present invention is to eliminate the aforementioned disadvantages and to provide an inexpensive and reliable arrangement of the speed limiter of the elevator, by means of which the speed is increased. . The denier can be made easily adjustable and as small as possible. It is a further object of the invention to provide an arrangement in which the remote locking of the speed limiter 25 and so-called. The anti-creeping function is advantageously combined with the other functions of the speed limiter • · · · ... ·. The arrangement of the invention is characterized by what is stated in the characterizing part of claim 1. Other embodiments of the invention are characterized by what is set forth in the other claims.

Inventive embodiments are also disclosed in the specification of this application. The inventive content ** "· in the application may also be defined otherwise than as set forth in the claims below. The inventive content may also be the subject of several separate inventions, particularly if the invention is considered in terms of expressions or implicit subtasks. In light of this, or in terms of the benefits or utility groups achieved, some of the definitions contained in the claims below may be superfluous to the discrete inventive ideas, and the 5 different details presented in the embodiment of each invention may also be used in other embodiments. at least in suitable situations, to be considered inventive as such.

An advantage of the arrangement according to the invention is, among other things, that the threshold for triggering the speed limiter is easily adjustable. A further advantage is that there are no parts of the speed limiter whose properties change over time, so that the set limit can be changed, so that once adjusted settings are maintained well, no new adjustments need to be made. Another advantage is that the speed limiter can be made as small as possible, which saves valuable space in the elevator shaft, which is especially important in old buildings. A further advantage is that the arrangement extends the service life of the speed-20 denier rope compared to prior art similar solutions in which the speed-rope groove in the speed-limiter wheel is so-called. V-groove. Sequential- • · ί / · | It also has the advantage that it allows two-way mechanical release of the speed limiter. A further advantage is that the two-way pendulum structure provides the system with a · · ·. * · *. easy to adapt so-called anti-creeping and remote • • ·; It is also an advantage that the arrangement is · · · simple, inexpensive to implement.

• · • · ·. . The invention will now be described in more detail by way of one embodiment, with reference to the accompanying drawings, in which:. Figure 1 is a side elevational view and a schematic view of the • · • · · ·. Fig. 2 is an oblique side elevational view of an elevator speed limiter using one embodiment of the arrangement according to the invention; Fig. 3 is an oblique view of an elevator without counterweight, using the arrangement of the invention; Figure 4 is a side view of the lower part of the locking member of the speed limiter according to the invention, when the speed limiter has not been released, Figure 5 is a side view of a speed limiting member of the speed limiting device according to the invention. when the speed limiter is released, Fig. 6 is a side view of the lower part 15 of the locking member of the speed limiter of the invention and a holding magnet holding the locking member in place; Figure 8 is a front view of a gripper portion of a locking member of a speed limiter of the present invention using one solution for adjusting the force of the speed limiter caused by the locking member, · · · · · * · 25 Figure 9 shows a front view of the no- · · • · ·. ··· according to the invention. • · • · ·; · of the locking member of the speed limiter. a part employing another solution for adjusting the force applied to the rope by the speed limiter caused by the locking member, Fig. 10 is a front view of the velocity of Fig. 2; * denier that uses a single solution to perform an- ··· • · * ... * ti-creeping and remote triggering when the elevator is allowed to move, ···. Fig. 11 is a front view of the speed limiter 35 of Fig. 2, which utilizes a single solution for carrying out the t-creeping and remote-release functions when the elevator car is open at the floor level; Fig. 12 is a front view of the speed limiter of Fig. 3 using another solution to perform anti-creeping and remote triggering functions when the elevator is allowed to move; and Fig. 13 shows a front view of the speed limiter of Fig. 3 using another solution. for creeping and remote triggering when the elevator car is open at the floor level.

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Fig. 1 is a schematic and simplified view of one counterweight traction sheave using the apparatus of the invention, comprising at least an elevator hoisting machine 5 with lifting motors, a traction sheave 6, an elevator control system 8 15 and a hoist hoist 1 substantially suspended vertically upon. The first end of the hoisting rope 3 is fixed to the upper part of the basket frame 2, from which it is guided to rotate over the traction sheave 6, then under the diverting pulley 7 of the hoisting machine 5 20 and a second time over the traction sheave 6 the other end of the hoisting rope 3 • · J / .j is secured. The lift gets its lifting power by the frictional mechanism between the traction sheave 6 and the hoisting rope 3 • · ·; 25 thanks. The suspension of the elevator car shown in Fig. 1 is simple • · ·. · * ·. Folded suspension structure for unweighted lift. Often ·· ·; ·, the hoisting rope 3 is guided to pass through a plurality of diverting pulleys, so as to obtain the desired suspension ratio.

The arrangement according to the invention relates to the elevator speed limiter 10, which in the exemplary embodiment is fastened to the top of the elevator shaft. Speed limiter rope 11: * · *; is fixed at its first end at the bottom of the basket frame 2. * · *. 12b. From the stick 12b, the rope 11 is wires · · ·. 35 to rotate the speed limiter 10 over the rope pulley 12, ··· ♦ of which is below the diverting pulley 12a attached to the bottom of the elevator shaft, ··· ♦ ♦ and further to the gripper 12b to which the other end of the rope 11 is also attached. The speed limiter 10 operates so that when the elevator car 1 moves at too high a speed downward or upward, the speed limiter 10 stops the movement of the rope 11, whereupon the rope 11 which is still stopped by the elevator car pulls the wedges 12b of the gripper 12b. One idea of the solution according to the invention is also to prevent the elevator car 1 from crawling by the same method. If the elevator car 1 moves down when level, for example as a result of loading or as the load decreases upwards over a predetermined distance, for example 100 mm, the speed limiter 10 stops the movement of the rope 11, whereby the gripper 12b engages and the wedge wedges.

Fig. 2 is an oblique side view of a speed limiter 10 of the elevator no-15 using one embodiment of the arrangement of the invention and Fig. 3 a speed limiter 10 of the other embodiment of the invention. The basic idea for stopping the speed limiter rope 11 is the same in both embodiments. Indeed, the embodiments differ only in the way in which the anti-creeping and remote-release features are implemented. Embodiments of these properties are described in more detail in the description sections of Figures 10-13.

• · · • · · · ·. 25 The speed limiter 10 includes a body 13 consisting of two • ··. ···. a vertical support 13a and two horizontal supports 13b. The vertical supports 13a · ·; · are fastened to the top of the elevator shaft at a suitable point in the spring, such as the top beam of the shaft. Between the vertical supports 13a, the horizontal supports 13b are fastened to the edges of the vertical supports at substantially the same height so that there is an empty space between the horizontal supports 13b. In this space, the speed limiter wheel 12, which is * j *, is fitted between the horizontal support brackets 13b. mounted and bearing rotatable on horizontal supports 13b. Speed- ···. the outer circumference of the denaturator wheel 12 has a substantially semicircular rope groove 14 in which the speed limiter rope 11 is adapted to travel. The rope 11 is dimensioned relative to the rope groove 14 such that a portion of the cross-section of the rope 11 is outside the periphery of the speed limiter wheel 12.

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The horizontal supports 13b are also bearing a pendulum locking member 15 on the same vertical line but slightly higher than the speed limiter wheel 12. Thus, the locking member 15 is eccentric to the bearing 12c of the speed limiter wheel 12. The locking member 15 has on each side of the speed limiter wheel 12, substantially sideways 15a extending from the periphery of the speed limiter wheel 12 towards the hub of the speed limiter wheel 12, which is normally substantially vertical 10 and extending slightly over The locking member 15 is dimensioned such that the distance from the bearing point of the locking member 15 to the underside of the Velcro portion 15b is suitably less than the distance from the bearing point 12c of the speed limiter wheel 12c to the outer surface of the speed limiter rope 11. The sizing is made such that, when in the upright position, the lower surface of the gripping member 15b of the locking member 15 does not contact the speed limiter rope 11, but when the locking member 15 pivots about its bearing point 20,

On the horizontal frame supports 13b on both sides of the speed limiter • ·; The j 12 wheel 12, near the lower part of the locking member 15, is secured with a latch. 2 5 holding members 16 of the elbow member such as permanent magnets. In addition, the • • ·. ···. • permanent magnets generating magnetic field 17 are fastened to the inner surfaces of the side support members 15a close to the outer periphery of the speed limiter wheel 12. The outer sides of the speed limiter wheel 12 also have circular, electrically conductive non-magnetic plates 18, e.g. The radius is substantially the same as the radius of the speed limiter wheel 12 and the area of the mining plates 18 is substantially concentric with the ferromagnetic speed limiter wheel 12. Because the aluminum sheets 18. ···. being fixed to the speed limiter wheel 12, they rotate as the elevator car 1 · · · '35 moves with the speed limiter wheel 12.

As the speed limiter wheel 12 rotates, vortex currents are generated on the aluminum plates 18 by the impact of the magnets 17 on the sides 15a of the locking member 15. The eddy currents generate a resistance against the rotation of the speed limiter wheel 12 and tend to rotate the locking member 15 from its vertical position to the direction of rotation of the speed limiter wheel 12. However, at the same time, the holding members 16 arranged near the lower part of the locking member 15 tend to hold the locking member 15 in an upright position. When the speed of the speed limiter wheel 12 exceeds the set trigger speed, the eddy current force exceeds the counter force of the holding means 16 and the locking member 15 is able to rotate in its axis in the direction of rotation of the speed limiter wheel 12. Due to the size of the locking member 15 and the eccentricity of the bearings, the lower face of the locking member 15b engages the speed limiter rope 11, which in its movement direction pulls the locking member 15 further to grip onto the rope 11, stopping the rope 11 and the speed limiter.

The horizontal supports 13b of the speed limiter body 13 are provided with mating members 19, which are locked by the locking member 15 when it is folded into place so that it cannot pivot further. The counter members 19 have adjustment grooves 19a through which the counter members 19 are fastened by bolts and nuts to the horizontal supports 13b. The weather grooves 19a are vertically elongated, allowing vertical positioning of the counter members 19. Vas- • · ·. By adjusting the 19 positions of the 25 tin members, you can adjust it, • o. ···. how far the locking member 15 can rotate before it hits the • ·. ·, tin member 19. In addition, the gripping member 15b of the locking member 15 has adjusting means for adjusting the force acting on the rope 11 of the velocity of the gripping member 15b to a suitable level. These adjusting means can be implemented in at least two different ways and are illustrated in more detail in Figures 8 and 9.

··· • · • · ···. *! *. Figure 4 is a side elevational view of the invention. lower part of the locking member 15 of the speed limiter. In the case of · · ··· • 35, the speed limiter has not tripped and the locking member 15 ··· ···! is in its normal upright position. At each of the horizontal supports 13b of the body 13, preferably above the center of rotation of the speed limiter wheel 12, and substantially the same vertical line 9 with said center, a substantially horizontal pivot axis 20 is disposed on its axle 20 by a locking member 15. a small and delicate bearing 20a, e.g. The bearing 20a is disposed in a bearing housing 21 on each of the lateral supports 15a of the locking member 15, the bearing housing 21 being substantially elongated longitudinally of the side member 15a of the locking member 15, with the locking member 15 with respect to the bearing 20a in the longitudinal direction of the side member 15a of the locking member 15.

Further, the horizontal supports 13b below the shaft 20 are provided with a circular arc 22 having a nearly semicircular arc and centered on a radius of curvature substantially along the axis 20. The lateral support 15a of the locking member 15 extends downwardly from its bearing housing 21 to below. At the inner surface of the side support 15a, the groove 22 has a bearing support 23 which is adapted to pass within the groove 22. The bearing bracket 23 is shaped and dimensioned so that there is a substantial gap between the upper edge of the groove 22 and the bearing bracket 23. a woman's even play B, which play B is smaller than the drug • · ·. 25 the clearance A between the housing 21 and the bearing 20a.

Fig. 4 further shows a dashed spring 48 acting as a spring member 48 • · · * ... acting at its lower end on the shaft • · '···' 20 and at its upper end by means of the fastening means 49 on the upper side 30 of the shaft 20, on the side surface of the speed limiter wheel • · *. ·. ·. The tension spring 48 is shown in Fig. 4 ···: ... · behind the side support 15a of the locking member 15 and is therefore shown with dashed lines. The tension spring 48 is adapted to pull the locking member 15 • · · ···. downwards such that, under normal circumstances, the bearing ♦ «*** 35 20a of the shaft 20 rests on its upper edge to the upper edge of the bearing housing 21, with a maximum clearance A below the bearing housing 21.

· ♦ »• · • · 10

Fig. 5 is a side view of the lower part of the locking member 15 of the speed limiter according to the invention in a situation where the speed limiter has been released and the locking member 15 has turned to the side. The speed limiter 10 is triggered I-5 of substantially 12 radial direction, that is, in Figure 5 the direction of arrow C, a force parallel to the speed limiter pulley pull the locking element 15 is substantially a locking element of the side supports 15a in the longitudinal direction, wherein the bearing 20a is released from the bearing housing 21 of the upper surface and also the bearing 23 and the grooves 22 of the play between aid B goes Ki-10 whereby the upper surface of the bearing supports 23 touches the inner surface of the grooves 22. In this case, the forces generated when the speed limiter is triggered are transmitted to the body 13 through the bearing supports 23 and do not stress the substantially small bearing 20a of the shaft 20. According to the invention, when the speed limiter 10 is released 15, the locking member 15 is also arranged to move, in addition to its pivoting movement, substantially linearly along its longitudinal axis 15a, i.e. substantially with respect to . Further, when the support points of the counter members 19 are placed directly on the rope force line of the speed limiter rope 11, the torque generated by the rope force can be completely annulled. Thus, the locking member 15 does not have to be mounted on the bearing • ♦ • j *; to carry the forces at the time the speed limiter is triggered - «··. 25 tires. These features allow for small and sensitive • · · • · ·. ···. but the necessary solid bearing.

Figures 6 and 7 show details of a two-stage holding solution 15 of the locking member 15, which enables e.g. switching the electric switch 50 of the lift 30 from the lifting mechanism of the elevator 30 to the operation of the locking member 15. As already mentioned above, the permanent magnets acting as holding members 16 are provided for each of the lateral supports 15a of the locking member. The retaining means 16 are arranged • · ·. ···. to act as a retaining means for the bearing supports 23 on the side members 15a of the locking member 15a, which are shaped differently so that each holding member 16 allows the locking member 16 to disengage at a different angle of inclination of the locking member 15.

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Fig. 7 shows three bearing supports 23 of different shapes, with additional mounting holes 23a by means of which the bearing supports 23 are secured to the side members 15a of the locking member. The length of the lower edge 23 of the bearings 5 of the bearings 5 is a decisive feature of the release of the locking member 15 from the holding of the holding member 16. The longer the lower edge of the bearing bracket 23, the greater the inclination angle of the locking member 15 and the greater the force required from the eddy current, i.e. the speed of the speed limiter wheel 12, before the locking member 15 disengages from the hold. Thus, the trigger point for the speed limiter can be set to the desired position by appropriately shaping the bearing supports 23. When the eddy current force exceeds the holding force 16 of the holding member 16, the locking member 15 is pivoted so that the underside of the Velcro portion 15b contacts the speed limiter rope 11, whereby the mechanical release of the trigger 15 begins.

The electrical switch 50 for switching off the elevator hoisting gear 5 is engaged by the locking member 15 in two steps such that when the first holding member 16 releases its grip on the bearing bracket 23 on the side 15a of the latching member 20, the electrical switch 50 releases and disengages the elevator in an upright position, with no mechanical adhesion. If the elevator • ·; the speed of the basket is still increasing, the grip of the second holding member 16 is also released • · ·. 25 and the locking member 15 pivotally rotates the speed limiter wheel 12. ···. wherever forced by eddy currents, the mechanical • ·.! [* tripping occurs and the elevator car stops on the gripper 12b.

Fig. 8 is a front view and a sectional view of the locking member 15 • · V. of the speed limiter according to the invention. a gripper portion 15b which uses a single solution to adjust the force exerted by the locking member • · · * ... · 15 on the rope 11. In this solution, the adhesive part 15b has a locking member • · ·, ···. a support plate 24 connecting the upper ends of the side supports 15a to which the upper ends of the side support members 15a are fastened by means of fastening means 27. In the center of the support plate 24 is a bore accommodating an adjustable spring-loaded press 28; the lower end extends from the bore below the support plate 24. The lower end 12 of the presser is additionally provided with a substantially V-shaped groove 30 which slides against the upper surface of the speed limiter rope 11 and further comprises a disc spring pack 29 supported at its upper end by fastening members 26 under the closed lid 25. The disc spring pack 29 is adapted to push the ram 28 towards the rope 11 and the spring force adjustment is effected by adjusting plates 51 supported on the lower and upper surface of the ram 28. As the inclination angle of the locking member 15 increases, the lower groove v 30 deflects the rope 11. . As the locking member 15 wedges, the disc springs 29 begin to collapse and produce a clamping force on the rope 11 which obtains its maximum value when the locking member 15 hits the stop 19.

Similarly, Fig. 9 is a front view of the adhesive part 15b of the locking member 15 of the speed limiter according to the invention 15, which uses another solution for controlling the force exerted by the locking member 15 on the rope 11. In this solution, the Velcro portion 15b has a spring member 31 which is pressed against the upper surface of the speed limiter rope 11 and is, for example, a spring steel plate and is adjusted to the desired spring force 20. The advantage of this solution is its simple, lightweight and low cost structure.

The eccentric pendulum-type locking member 15 allows for a · · · · · · · · · · · ·. . ·. 25 mail anti-creeping function free movement before speed ···, ···. mechanical triggering of the denaturator 10 and pulling the clamps of the • ♦ gripper 12b to the sticker position. The anti-creeping function in the arrangement according to the invention can be simply achieved by locking the locking member 15 and the speed limiter wheel 12 together.

Figs. 10 and 11 show a speed limiter according to Fig. 2, in which one solution is anti-creeping and distal ···. for triggering trip functions. Fig. 10 shows a state of the elevator in which the elevator is allowed to move, while Fig. 11 shows a situation in which the elevator car is open at the floor level, the doors are not allowed to move.

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The anti-creeping and remote triggering device 32 includes at least an electromagnet 33, a magnetically responsive ferromagnetic counter plate 33a and a hinge mechanism 34, 34a, 35 connected to the first plate 33a with a 17. The pivot mechanism is adapted to pivot about a pivot 34a secured in its central portion to the side support 15a of the locking member 15 so that when the counter plate 33a 10 is attached to the electromagnet 33, the permanent magnets 17 are disengaged from the aluminum plate 18 .

The electromagnet 33 is pivotally connected to the side support 15a of the locking member 15 by a pivot 36 such that gravity pulls the upper edge of the electromagnet 33 always into the counter plate 33a which is attached in the crank joint mechanism 34, 34a, 35. This ensures the safe operation of the electromagnet 33, although the pulling force of the electromagnet 33 on the pie-20 becomes very radical as the air gap 37 between the electromagnet 33 and the counter plate 33a increases.

The solution according to Figs. 10 and 11 is based on the magnetic attraction between the eddy currents rj: creative permanent magnets 17 and the ferromagnetic steel body of the speed limiter wheel 12, and the magnetic countermeasure generated by the electromagnet 33. into force. When no electricity is supplied to the electromagnet 33, the permanent magnet • ♦ ·. ···. the rivets 17 engage themselves with the speed limiter wheel 12 • · toward the surface of the outermost aluminum plate 18 in the center. . 30 weighing wheel ferromagnetic steel frame. In this position, the speed limiter wheel 12 and the locking member 15 are locked in place and the anti-creeping function is on and the elevator car is not allowed to move. However, if the elevator car starts to move up. ***. or downward, the locking member 15 begins to rotate to the speed limit ··· ·. 35 pinwheel 12 included. The free movement of the locking member 15 corresponds to the free movement of the received anti-creeping function. As the locking member · · * ♦ ·· * hits the counter member 19, the speed limiter rope 11 stops, pulling the wedges of the gripper 12b into the grip position.

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When the elevator car is allowed to move, the electromagnet 33 is electrified, whereupon the electromagnet 33 pulls the permanent magnets 17 off the aluminum plate 18, leaving a suitable air gap between the aluminum plate 18 and the magnets 5 17, allowing normal travel.

The remote release function is performed by cutting off the power supply from the electromagnet 33, whereby the permanent magnets 17 are again magnetically attached to the aluminum plate 18, thereby locking the locking member 15 to the side surface of the speed limiter wheel 12. Adequate friction and protection for the permanent magnets 17 is obtained by placing a thin polyurethane sheet on the surface of the permanent magnets 17.

Similarly, Figs. 12 and 13 show a speed limiter 15 of Fig. 3 using another solution to perform anti-creeping and remote triggering functions. Fig. 12 shows a situation in which the elevator is allowed to move, while Fig. 13 shows a situation in which the elevator car is open at the floor level and therefore cannot move.

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The anti-creeping and remote triggering apparatus 32 shown in Figs. 12 and 13 includes at least a solenoid 39 attached to a speed limiter body 13 · · and connected to the first end of the solenoid 39 via a solenoid spindle 40: a 25 crank pivot mechanism 41-46 having - • · · · ** '. At its end, a speed-limiting wheel 12, which is mechanically locking the speed limiter wheel 12, is connected to the locking member 15 by a locking member 47. The first end of the link mechanism 41-46 is angled and has a hinge 42 at its horizontal end. 30, the lever member 41 is connected at one end to the spindle 40 of the solenoid 39 and the elongate slot 43 at the other end, respectively, to the side support 15a of the locking member: * · *: lateral support 15a movable longitudinally; ***. to the M »·. 35 to the articular organ 44.

At the lower end of the gear member 45 is the aforementioned latch member 47 so dimensioned and positioned that, as the gear member 15 45 rises sufficiently upward, the latch member 47 rises on the aluminum plate on the side of the speed limiter wheel 12. 18, and thus mechanically locks the locking member 15 on the speed limiter wheel 12. The transmission member 45 is provided with a spring member 46 adapted to push up the engagement member 45 in the longitudinal direction of the side member 15a of the locking member.

12 and 13, the interlocking of the speed limiting wheel 12 of the locking member 15 and 10 when activating the anti-creeping function occurs by moving the latch member 47 at the lower end of the gear member 45 between the teeth 38 on the rim of the aluminum plate 18. When the sal-15 ribbon 47 is between teeth 38, the elevator car is level and is not allowed to move. Similarly, the anti-creeping function is disabled by electrifying a solenoid 39 which depresses the transmission member 45 by means of the lever member 41. At the same time, the pivoting member 44 at the upper end of the transmission member 45 is disposed within the same line with the axis 20 of the locking member 15. In this case, the lever member 41 need not move even if the locking member 15 is pivoted about its axis 20. Thus, the inertia of the solenoid 39 and the lever member 41 is not involved in the movement of the locking member 15. The only resistance to the movement of the locking member 15 is • · ·: 25 bearing friction.

• · · • · · · · · · · · ·; In the solution of Figures 12 and 13, the remote trigger function is triggered by triggering the speed limiter 10 while the elevator is moving. The solenoid 39 is then switched off and on. . The spring member 46, by its thrust, lifts the latch member 47 between the teeth 38 of the aluminum plate · · · * · '·' The elevator car does not stop immediately, so that the spring characteristics of the latch member 47 are sized so that the latch member 47 is spring-loaded to prevent damage to the device. ** ·. as a conventional element, such as a ratchet, enabling the latch member • · · ·. 35 47 jumping over one or more teeth 38 as the forces • · · ···· grow large enough. However, the force required to bend the latch member 47 is such that the force required to mechanically release the device is achieved.

16

The performance, or remanence, of magnets changes as a function of temperature. The temperature dependence 5 of the permanent magnets 16, 17 used to generate the holding force and the eddy currents is eliminated by using similar types of permanent magnets both to provide a holding force for the normal wage of the locking member 15 and to create eddy currents. As the temperature increases, the output of the eddy currents of the permanent magnets 17 decreases due to the decrease in retention, but at the same time the pulling force of the holding magnets 10 decreases. Also, the aging of used magnetic materials causes loss of remanence. When both forces are produced on the same materials, the change in the properties of the magnetic materials does not affect the whole.

It will be apparent to one skilled in the art that the invention is not limited to the above example, but may vary within the scope of the following claims. Thus, for example, the arrangement according to the invention can be used in a lift other than that described above. The elevator may also be counterweighted instead of unweighted. The suspension ratio of the elevator may also be different from the embodiment described above.

It is also obvious to a person skilled in the art that the locking member shaft ···: 25 may be fixed instead of the speed limiter body at the sides of the locking member so that the locking member pivoting movement • · · bearing and bearing clearance are respectively · · ·. ···. on the body of the stop.

• · • · ·. . It will be further understood by one skilled in the art that, instead of the above mentioned anti-creeping and remote triggering devices, the above may be different. What is important, however, is that the speed limiter has a pendulum-type locking element that allows the anti-creeping function to be free • · · *. 35 miles before the mechanical release of the speed limiter, • · · ·· ”and that the anti-creeping and remote release function is activated by locking the locking element and the speed limiter wheel.

17

It is also clear to one skilled in the art that the speed limiter may be located outside the top of the shaft. The speed limiter may be located, for example, at the bottom of the shaft or at any other suitable location in the shaft. In addition, the speed limiter may be in a different position relative to the example shown, for example upside down, whereby many functions are inverted vertically due to the position.

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Claims (18)

An arrangement in an elevator speed limiter comprising an elevator at least an elevator-5 car (1) suspended from a lift hoisting rope (3) and arranged to travel reciprocally substantially vertically along the rails (4), at least one sticker ( 12b) and a speed limiter (10), the speed limiter (10) comprising at least a speed limiter wheel (12), a diverting pulley (12a) and a speed limiter rope (11) arranged as a loop at least to the speed limiter wheel (12) and the diverting pulley (12a). ), which speed limiter rope (11) is connected directly or indirectly to at least one of the velcro straps (12b), and which speed limiter (10) further comprises at least a frame (13) and a locking member (15) with a rotation axis (20) movement of the speed limiter rope (11) for stopping the locking member (15) to pivot about its axis (20) when the speed limiter (10) is released, and to which speed limiter (1) 0) further includes permanent magnets (17) for generating a magnetic field, characterized in that the locking member (15) is movable relative to the axis of rotation (20) in the radial direction of the axis of rotation and that the locking member (15) in addition, to move substantially radially:: *: of its dysaxis (20). • · ·: 25 • · ·. ·· *. An arrangement according to claim 1, characterized in that: · · ·: ·. that the locking member (15) has at least one side support (15a), wherein the side support (15a) has a bearing housing (21) with a rotation shaft (20) having a bearing housing (21). . 30 at least a longitudinal clearance (A) of the side support (15a) of the locking member (15) relative to the bearing (20a) of the dysaxis (20). Arrangement according to Claim 1 or 2, characterized in that the locking member (15) has a bearing bracket on its side (15a). Below the 35 (21), a bearing bracket (23) adapted to be seated in a groove (22) in the body (13) of the speed limiter (10) and each bearing bracket (22); 23) arranged to carry the forces generated when the speed limiter is triggered. Arrangement according to Claim 1, 2 or 3, characterized in that, under normal circumstances, the clearance (B) of the bearing bracket (23) at the edge of the groove (22) towards the bearing housing (21) is smaller than the bearing housing (21) and bearing (21). 20a) longitudinal clearance (A) between the side member (15a) of the locking member (15). Arrangement according to one of the preceding claims, characterized in that the locking member (15) is mounted on the body (13) of the speed limiter (10) so as to be pivotable in both directions of rotation of the speed limiter wheel (12). Arrangement according to one of the preceding claims, characterized in that the body (13) of the speed limiter (10) has stop members (19) for limiting the movement of the locking member (15) in each of the movement families of the speed limiter wheel (12). essentially a line of speed limiter rope (11) to the rope current. 20 Arrangement according to any one of the preceding claims, characterized in that the locking member (15) has an adhesive part • · · '/ ·· (15b) arranged to press against the surface of the speed limiter rope (11) when the speed limiter (10) is released. 25 • · ·. * · *. Arrangement according to Claim 7, characterized in that ··· ··. that the Velcro portion (15b) has an adjustable spring-loaded pressure • · · · · · nin (28) provided with a groove (30) pressed against the surface of the speed limiter rope (11). 30 Arrangement according to Claim 7, characterized in that the velcro rope (11) has a spring force, which is pressed against the surface and adjusted to the desired spring force. . ***. soul (31). • «* '··· 35 Arrangement according to one of the preceding claims, characterized in that the axis of rotation (20) of the locking member (15) is disposed eccentrically with respect to the axis of rotation of the speed limiter wheel (12) and the locking member (15). ), the length of the lateral supports (15a) relative to the radius of the speed limiter wheel (12) is selected such that, when the locking member (15) pivots, the lower surface of the engagement member (15b) engages the upper surface of the speed limiter rope 5 (11) (15) further to engage more firmly on the rope (11) to stop movement of the rope (11) and the speed limiter wheel (12). Arrangement according to one of the preceding claims, characterized in that the locking member (15) is normally arranged, with the travel speed of the elevator car (1) within the permissible range, to remain substantially vertical and in its lower position on the bearing support (23) a retaining member (16), such as one or more permanent magnets and a spring member (48) attached to the side support (15a) of the locking member (15). Arrangement according to one of the preceding claims, characterized in that one of the retaining means (16) is provided for each of the lateral supports (15a) of the locking element and that the bearing supports (23) are shaped differently with each other. 16) allowing the locking member (15) to disengage at different angles of inclination of the locking member (15). • · ·. 25 • · · • ··. ···. The system according to any one of the preceding claims. characterized in that the electric switch (50) for switching off the lift hoisting gear (5) is connected to a two-stage operation of the locking member (15) so that the first holding member. When the grip (30) is detached at the side of the locking member (15a), the electrical switch (50) is only triggered by the bearing bracket (23), but the latching does not take place. ··· • · · · · ·. ***. Arrangement according to one of the preceding claims, characterized in that the speed limiter (10) is provided with an anti-creeping and remote-release device (32). • · • · ··· An arrangement according to claim 14, characterized in that the anti-creeping and remote triggering device (32) comprises at least an electromagnet (33), a ferromagnetic counter plate (33a) magnetically reacting to the electromagnet (33) and a hinged mechanism connected to the first end plate (33a). (34, 34a, 35) having one or more permanent magnets (17) forming a magnetic field on the speed limiting wheel (12) coupled to the locking device (15) at one end of the articulation mechanism. 10 Arrangement according to Claim 15, characterized in that both the anti-creeping and the remote triggering functions are performed by cutting off the power supply to the electromagnet (33) and allowing the permanent magnet (17) to engage with the side surface of the speed limiter wheel (12). An arrangement according to claim 14, characterized in that the anti-creeping and remote triggering device (32) comprises at least a solenoid (39) and a hinge mechanism (41-46) connected to the first 20 ends of the solenoid (39) with a locking member (15) ) mechanically locking the latch member (47) of the speed limiter wheel (12). Arrangement according to claim 17, characterized by sii ··· j j *; 25 that both the anti-creeping and remote shutter functions are ···. · **. performed by cutting off power to the solenoid (39) and allowing the latch member (47) to engage the spring member (46) between the teeth (38) of the speed limiter wheel (12) on the side surface of the speed limiter wheel (12). ♦ • · ♦ ♦ ♦ · · · ♦ ♦ «« «« «« «« »» »» » · • · ···