FI117239B - Security device of an elevator - Google Patents

Description

117239

LIFT SECURITY DEVICE - SÄKERHETSANORDNING AV EN HISS

The invention relates to an elevator safety device as disclosed in the preamble of claim 1, in particular for use during elevator installation.

Most lift installations nowadays use mobile work platforms which are suspended on a lift shaft by a hoisting rope. Such a work platform 10 may be, for example, a temporary work platform solution or an elevator car coming into use after the installation. Frequently, the work platform is guided to pass along the elevator rails, which are mounted one after the other as the installation progresses, while the platform is lifted along the rails along the pit-15. A problem with such a solution is, among other things, the safety of the installers. The lifting brake alone is not considered to be safe enough, and a separate adhesive solution is also required to prevent the work platform from falling. Usually for this purpose a speed limiter and a gripper during the final use of the elevator 20 are used, which are temporarily connected during installation. The problem, however, is that in normal use, higher adhesion speeds are allowed than during installation during operation. In this case, the speed limiter for final use does not * * * • l * 25 itself work, but needs to be adjusted or replaced with I, to have a lower fall-off speed for installation time * * *; * | speed limiter. The problem here is that * * * * · '! After the installation is complete, reinstall and adjust the speed limiter and the • • »4 * * 3an for the final travel speed and * * * * ... * 30 rated load. At the same time, a new rope restraint system for the whole country is usually required. A further problem is that the installation of the speed limiter and the ratchet arrangement; ***: extends the installation time.

* * »« * * «35 of U.S. Patent No. 5,052,523 discloses a speed limiter for an elevator car. In this solution, the speed rope * ·· rider is attached at its top to the roof of the shaft and ·; ··; lowered to the floor by means of a clamping member.

The speed limiter rope is arranged to wrap around the speed limiter wheel on the roof of the elevator car 2 117239. In addition, the speed limiter includes a separate coil for which the pulling rope of the wedge wedge is intended to coil during the adhesive phase. This solution is made for final elevator use, mainly for 5 elevators that do not have a machine room where speed limiters and normally could be placed. The need for installation time with this structure cannot be solved as such, so there are the same problems described above. US 5183979 A discloses an elevator safety device which, in addition to the conventional speed limiter 10, includes another similar speed limiter on the counterweight side.

It is an object of the present invention to eliminate the aforementioned drawbacks and to provide an inexpensive, easy to install and safety-compliant installation device during installation which enables the elevator car or the like to be quickly and safely stopped. The security device according to the invention is characterized by what is set forth in the characterizing part of claim 1. Other embodiments of the invention 20 are characterized by what is set forth in the other claims.

: Y: An advantage of the solution according to the invention is that the safety device Γ * .. uses an additional additional speed limiter, which allows: 25 working platform lifts or the like to be stopped at a lower fall speed and • • · less than normal fall distance. . This will improve the safety of the installers. Completely finished elevator with passengers standing in a · · ·· * closed elevator car, allowing higher tacking speeds and longer fall distances. Instead, installers • • * * ··· * work in awkward positions and for example. also on the roof of the basket. If · · · · · · · · · · · · · · · · ... suddenly falls on the working platform, there is. a roof-mounted fitter is much more at risk than ··· ····. • · · 35 people standing inside the elevator car at the same speed during normal driving. For this reason, the solution according to the invention is very ♦ ·· good for its safety. It also has the advantage that * · ** ·, when the over speed limiter is below the floor of the elevator car, is not in the way of installers during installation work. A further advantage is that the safety device according to the invention also shortens the installation time, since before the lift is finally commissioned, it is sufficient to remove the additional speed limiter and adjust the length of the rope for final use. 5 No further installation or adjustment is required. A further advantage is that the speed limiter for normal operation now acts as a backup and thus provides additional safety in the event of a malfunction or other failure of the speed limiter.

10

In the following, the invention will be described in more detail by way of one embodiment with reference to the accompanying drawings, in which Figure 1 illustrates a safety device solution according to the invention in an elevator shaft in simplified and side elevation and Figure 2 illustrates the safety device solution according to the invention

The solution according to Fig. 1 shows a working platform 1 as a working platform in a simplified and side view of an open pit in the front wall. The pattern is graphically drawn and is not to scale. Also, the lift mechanism and ** 4, ·, · the suspension of the elevator are not shown in the drawings for clarity.

• * • · ·

Although in the figure the elevator guides 2 are drawn from the bottom of the shaft to the roof of the shaft, the elevator car 1 can be considered as a * * 4 * ·:. * Working platform from the earlier stage of the installation * · · · ... · the ceiling of the shaft. . ·. until. In the engine room or other suitable location, the elevator has a * * *. ···, which has a standard speed limiter 3, with a transmission rope 4 attached to the clamp as a transmission means. Under normal driving conditions, the speed limiter rope 4 travels at the same speed as the elevator car. If, for some reason, the elevator car speed increases beyond a predetermined taring speed, the speed limiter 3 stops the rope 4 and as a result the rope pulls the wedge 5 of the elevator car onto the guide 2, whereupon the elevator car 1 stops. The pulling is performed by the activation lever 6 of the stopper 5, which arm 5 is attached to the rope 4. The speed stopper, also called the stopper rope 4, the rope 4 rotates around the diverting pulley 8. The diverting pulley 8 is pivotally attached to the guide 2 so that a tensioning weight 9 is provided at the outermost end of the mounting arm, which always maintains the tension of the rope 4 as correct.

According to the invention, an additional auxiliary speed limiter 7, which is connected in series with the speed limiter 3, for example, is incorporated into the elevator arrangement described above as a safety device. This additional speed limiter can be fixed either in the elevator shaft or in the elevator car. In the embodiment described in the example, the auxiliary speed limiter 7 is located in an elevator car serving as a work platform 20, immediately below the elevator car and near the bottom of the elevator car. The gripper rope 4 is set to pass through the auxiliary speed limiter 7 and the auxiliary: V: speed limiter is adjusted to stop the movement of the gripper rope 4 if its speed becomes too high. The additional speed limiter 25 has a nominal speed of, for example, 1.0 m / s, whereby it * * · *. · .: stops the movement of the elevator car at a lower speed and at a shorter distance than the normal speed of the finished elevator, where 6 m / s.

* · 30 Figure 2 shows in more detail the rotation of the gripper rope 4 around the folding wheels of the additional speed limiter 7. The rope 4 extends from top to bottom and first rotates underneath the diverting pulley 11; · * · Through its own rope groove towards the flywheel 10, which is ***. **. a dedicated skipako to operate a speed limiter which was not

• M

However, for the sake of clarity, they are not shown in the drawings. After twisting * ··· * · 'from below the ratchet wheel 10, rope 4 retracts to a second rope groove on ratchet wheel 11 and rotates upstream about ratchet wheel 11 to lower 5 117239 ratchet wheel 8. The additional speed limiter is a general speed limiter for normal use. .

According to the invention, the additional speed limiter 7 located in the working platform 1 of the elevator car 1 is connected to a normal gripper rope 4 so that the additional speed limiter is connected to the vertical part of the rope 4 on the other side of the speed limiter 3 as the vertical part of the rope 4 10 tetty. Then, the rope acting on the auxiliary speed limiter 7 travels in the opposite direction to the elevator car 1 which acts as a work platform, whereby the auxiliary speed limiter 7 detects the movement speed of the elevator car twice. The effective speed of the rope 4 is then twice as fast as the travel speed of the elevator car in the speed limiter 7. It follows that, for example, a speed limiter with a nominal speed of 1.0 m / s will now operate at a speed of 0.5 m / s. In this case, the distance that the elevator car has fallen at the time of picking is also shorter than in the case of normal stickering.

20

It will be apparent to one skilled in the art that the invention is not limited to the example set forth above, but may vary within the scope of the following claims. Thus, for example, the position and structure of the additional speed limiter 7 may vary! · 1. 25 della. The auxiliary speed limiter 7 may be disposed, for example, firmly in the elevator shaft. One suitable place is, for example, ** 1: the elevator guide. Similarly, the suspension of the speed limiter rope 4 may differ from the one shown in the example.

«·· 30 • 1 m • · · · · · * · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·«

Claims (8)

117239 Safety device, in particular for use during the installation of a lift, comprising a speed limiter (3) for controlling the work platform (1) and a speed limiter (1) connected to the speed limiter by means of a rider (4) and fixed to the work platform (1). 5), characterized in that in addition to the speed limiter (3), the safety device includes an additional 10 speed limiter (7), and that the additional speed limiter (7) is connected to the same rope (4) with the speed limiter (3) and the clamp (5). Safety device according to Claim 1, characterized in that the additional speed limiter (7) is connected in series with the speed limiter (3). Safety device according to one of the preceding claims, characterized in that the auxiliary speed limiter (7) is arranged to move with the working platform (1). Safety device according to one of the preceding claims, characterized in that the additional speed limiter (7) is disposed. mounted on a vertically movable work platform (1) * *. 25 under the treadmill. Safety device according to one of the preceding claims, characterized in that the additional speed limiter (7) is fixedly located in the elevator shaft. 30 »I I 5. A patent for the use of a patent for the use of a patent, an extra hastighetsbegränsaren (7) and a fast placerad i hisschaktet. 6. Säkerhetsanordning enligt face av de föregäende patentkraven, call for tecknad av, att den extra 10 hastighetsbegränsaren (7) anordnad att reagera vid lagre hastighet et vidaldaldrift av hissen och stoppa arbetsplatten en häsent I am som som fallet med hisskorgen i den färdiga hissen vid normal drift. 15 Safety device according to one of the preceding claims, characterized in that the auxiliary speed limiter (7) is adapted to: * · react to a lower speed than normal operation of the finished elevator and to stop the work platform (1). ) after a significantly higher speed movement than the normal • ft * ** ·: β over-stop of the finished elevator elevator car. * · 117239 Safety device according to one of the preceding claims, characterized in that the working platform (1) is an elevator car for normal use of the finished elevator. Safety device according to one of the preceding claims, characterized in that the auxiliary speed limiter (7) is connected to a vertical part of the rope (4) which is on one side of the speed limiter (3) than the vertical part of the rope (4) (6) is closed. 15 1. Säkerhetsanordning avsedd att användas särskilt under en hiss' monteringsfas, whistling sækerhetsanordning omfattar en hastighetsbegränsare (3) som övervakar hastigheten hos den i monteringsarbet använbeten (1) samt en vidsaren förenad och vid arbetsplattformen (1) fästad fängapparat (5) som stoppar arbetsplattformen (1), kännetecknad av, att account kökerhetsanordningen utom hastighetsbegränsaren (3) hör • * * ***** en extra hastighetsbegränsare (7) och att ** · hastighetsbegränsaren (7) and fästad vid samma Iina (4) som * *:. ·: 25 hastighetsbegränsaren (3) och fängapparaten (5). • ft • ft »ft ft · ft ft ·: ··: 2. Säkerhetsanordning enligt patentkrav 1, kännetecknad av,; *** · att den extra hastighetsbegränsaren (7) är kopplad i serie med ··· hastighetsbegränsaren (3). . . ·. 30 ft ft ·, ···. 3. Säkerhetsanordning enligt verb av de föregäende • · *** patent kraven, kännetecknad av, att den extra ft \:. 2 hastighetsbegränsaren (7) and placerad att röra sill tillsammans • · «med arbetsplattformen (1). 35 [] [[4. 4. Säkerhetsanordning enligt verb av de föregäende * · patent kraven, kännetecknad av, att den extra 117239 hastighetsbegränsaren (7) and placerad nedanför den i vertically tiled arbetsplattformen (1}. 7. Säkerhetsanordning enligt face av de föregäende patentkraven, kännetecknad av, att arbetsplattformen (1) fördig hiss avsedd hisskorg. 20 8. Säkerhetsanordning enligt verge av de föregäende patentkraven, kännetecknad av, att den extra hastighetsbegränsaren (7) föregäende patrikala * · · V. · avsnitt av Iinan (4) som är beläget Pära andra sidan av • '··· hastighetsbegränsaren (3) vän den sida av fängapparaten där det • * · 25 vertical fish avsnitt av Iinan (4) bel belge vid flash: \ j fängapparatens (5) aktiveringsarm (6) är fästad. «• e 444 • e • * ·· * a • · * aa # • • 4 · ** • e • i • e # 4 • • 4 4 4 4 4 44 4 444 4 4 4 4 4« · 4 4 444 4 4444 4 4 «