elevator

Abstract

An elevator comprises a car (10), a counterweight (41) and a hoisting member (42), the hoisting member connecting the car and the counterweight via a traction sheave (33). A free fall protection system comprises a free fall protection controller (200), a free fall protection member (100) connecting the car and the counterweight via a traction sheave or a separate free fall sheave (36). The car and the counterweight are supported by the hoisting member in normal operation and are supported by the free fall protection member only in the event of a failure of the hoisting member support. At least one free fall protection brake device (110, 120) is arranged to stop the movement of the free fall protection member when activated by the free fall protection controller, thereby also stopping the movement of the car and / or the counterweight.

Description

Technical Field

[0001] The present invention relates to an elevator. Background Art

[0002] An elevator typically includes a car, an elevator shaft, a hoisting mechanism, a hoisting member, and a counterweight. The car frame can surround and support the car, or it can be an integral part of the car. The hoisting mechanism can be located in the machine room or the shaft and can include a drive, an electric motor, a traction sheave, and a mechanical brake. The hoisting mechanism enables the car to move vertically up and down in the vertically extending elevator shaft. The car frame can be connected to the counterweight, with the hoisting member passing over the traction sheave. The car frame can also be supported by guides on guide rails extending along the height of the shaft. The guide rails can be supported by fastening brackets on the sidewall structure of the shaft. As the car moves up and down in the elevator shaft, the guides can engage the guide rails and maintain the car in the appropriate position in the horizontal plane. The counterweight can be supported on the guide rails in a corresponding manner, which are supported on the wall structure of the shaft. The elevator car can transport people and / or cargo between landings in a building. The elevator shaft can be formed such that the wall structure is formed by a solid wall or such that the wall structure is formed by an open steel structure.

[0003] Safety regulations require that elevators be equipped with a free-fall protection system. Small elevators in low-rise buildings are often only provided with a safety gear connected to the car. Elevators in high-rise buildings and elevators with accessible space below the shaft should be equipped with a safety gear connected to the car and a safety gear connected to the counterweight. Traditionally, an overspeed governor sheave, a safety gear, and an overspeed governor (OSG) rope connecting the overspeed governor sheave and the safety gear have been used as the free-fall protection system for elevators. The OSG rope extends over an OSG sheave at the top of the shaft and a lower tension pulley at the bottom of the shaft. Traditionally, the OSG rope is tensioned by the lower tension pulley. However, the inertia of the rotating components of the OSG and the OSG rope can cause problems in high-speed elevators. A sudden emergency stop of the mechanical brake, combined with the aforementioned inertia, can cause the safety gear to activate unexpectedly.

[0004] Thus, the weight of OSG ropes has caused problems in high-rise buildings.

[0005] The OSG ropes run close to the fixed structure in the shaft, and the tension in the OSG ropes is significantly less than that in the hoist ropes. Building sway and bending can cause the OSG ropes to become tangled in the shaft structure. In areas prone to excessive building sway, such as from strong winds or earthquakes, elevator operation will be interrupted if building sway exceeds safe limits.

[0006] When sizing the guide rails, the grip of the safety gear on the guide rails must be taken into account. This may increase the size of the guide rails compared to if only ride comfort, horizontal acceleration and uneven car loading were considered.

[0007] There are prior art solutions in which the OSG sheave and OSG rope ring at the top of the shaft are replaced with a stationary OSG rope and an OSG positioned to connect to the car and directly operate the safety gear. The stationary OSG rope addresses the issue of rope inertia and partially resolves the issues associated with swaying OSG ropes. As another alternative, the safety gear can also be electrically activated. Electrically activated safety gear resolves the issues associated with OSG ropes. However, this prior art solution requires the placement of a battery in the car to operate the OSG even in the event of a power outage. Furthermore, if the car cable is damaged, the safety gear may not be released via the electrical control. Summary of the Invention

[0008] The object of the present invention is to provide an elevator with a novel free-fall protection system and a method for controlling an elevator with a novel free-fall protection system.

[0009] The elevator according to the invention is defined in claim 1 .

[0010] The elevator includes:

[0011] The car, counterweight and lifting member are connected to the car and counterweight through a traction sheave.

[0012] The elevator is characterized in that the elevator also includes a free fall protection system, and the free fall protection system includes:

[0013] Free fall protection controller,

[0014] a free-fall protection member connecting the car and the counterweight via a traction sheave or a separate free-fall sheave, whereby the pre-tensioning load of the free-fall protection member is less than the pre-tensioning load of the hoisting member, so that the car and the counterweight are supported by the hoisting member in normal operation and are supported by the free-fall protection member only in the event of a hoisting member support failure,

[0015] At least one free fall protection brake device is arranged to stop movement of the free fall protection member and thereby also stop movement of the car and / or counterweight when activated by the free fall protection controller.

[0016] The method according to the invention for controlling an elevator is defined in claim 12 .

[0017] The free-fall protection member does not carry any significant portion of the car and counterweight load during normal operation. The car and counterweight loads are carried by the hoisting member during normal operation. This can be achieved by making the pre-tensioning load in the free-fall protection member lower than the pre-tensioning load in the hoisting member. The pre-tensioning load of the free-fall protection member is only necessary to keep the free-fall protection member in its track on the pulleys. Only in the event of a hoisting member failure are the car and counterweight fully supported by the free-fall protection member.

[0018] The elevator free-fall protection system eliminates the overspeed governor rope and the problems associated with it.

[0019] The elevator free fall protection system further eliminates the safety gear of the car and / or counterweight. Thus, the sling of the car can be dimensioned to have a resistance of, for example, 0.5 g instead of the normal 1 g.

[0020] Also, since there is no safety gear clamping the rail, the rail construction can be lighter.

[0021] Therefore, the problem of the guide rail falling onto the jacking bolt when the safety gear is activated is also eliminated in the present invention.

[0022] If the deceleration of the car is monitored and automatically controlled at the shaft end to prevent the buffers from running at too high a speed, then according to the invention, there is no need for a locking device to prevent jumping in the elevator. This is because the machinery brakes and the free-fall protection brakes can be dimensioned so that, with all brakes activated, the blocking of the car and / or counterweight does not exceed 0.5 g. Such a locking device to prevent jumping is usually required in elevators with speeds exceeding 3 m / s.

[0023] The car may always be moved from the machine room to the landing. There is no need to consider the situation where the car and / or counterweight cannot be moved because the safety gear cannot be opened, so there is no need to rescue people from one car to another.

[0024] Any type of speed detector can be used in conjunction with an elevator free-fall protection system. The speed detector can be electronic, for example, based on one or more acceleration sensors, or based on encoder data. When using a separate sheave for the free-fall protection rope, an encoder can be used to measure the rotational speed of the traction sheave or the sheave of the free-fall protection rope. Alternatively, the speed detector can be mechanical, such as a roller acting on the car guide rails.

[0025] The free fall protection system may further comprise a speed detector which directly or indirectly measures the speed and / or acceleration-deceleration of the car and / or the counterweight, whereby the free fall protection controller is arranged to activate the at least one free fall protection brake device when an abnormal speed and / or acceleration-deceleration is detected.

[0026] Elevator free-fall protection systems can be used with any type of elevator. They are particularly well-suited for use in high-rise buildings, where the elimination of OSG ropes, safety gear, and anti-rebound devices is a significant advantage. While there is no universally accepted definition for the term "high-rise building," buildings over 50 meters in height can be considered high-rise. High-rise buildings can reach heights of several hundred meters.

[0027] The hoisting members in elevators can be formed from round ropes or flat ropes. The hoisting members can be made of steel and / or polymer. Flat ropes made of carbon fibers encapsulated in a high-friction polymer can be advantageously used as hoisting ropes in high-rise elevators. Flat ropes made of carbon fibers encapsulated in a high-friction polymer weigh much less than corresponding steel ropes. Such flat ropes made of carbon fibers encapsulated in a high-friction polymer are sold, for example, under the trade name HYDRA was sold. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will now be described in more detail by way of preferred embodiments with reference to the accompanying drawings, in which:

[0029] Figure 1 shows a side view of the elevator,

[0030] Figure 2 shows a schematic diagram of the device of the present invention,

[0031] Figure 3 A braking device that can be used in the present invention is shown. DETAILED DESCRIPTION

[0032] Figure 1 shows a side view of a prior art elevator,

[0033] The elevator may include a car 10, an elevator shaft 20, a hoisting machine 30, a hoisting member 42, and a counterweight 41. A separate or integrated car frame 11 may surround the car 10.

[0034] The hoisting machine 30 may be located in a machine room or in the shaft 20. The hoisting machine may include a drive 31, an electric motor 32, a traction sheave 33, and a machinery brake 34. The hoisting machine 30 may move the car 10 upward and downward in the vertical direction Z in the vertically extending elevator shaft 20. The machinery brake 34 may stop the rotation of the traction sheave 33, thereby stopping the movement of the elevator car 10.

[0035] The lifting member 42 may be formed by one or more lifting ropes or lifting belts extending in parallel.

[0036] The car frame 11 can be connected to the counterweight 41 via a hoisting member that passes around the traction sheave 33. The car frame 11 can also be supported on guide rails 25 extending in the vertical direction in the shaft 20 via guide devices 27. The guide devices 27 can include rollers that roll on the guide rails 25 or shoes that slide on the guide rails 25 as the car 10 moves up and down in the elevator shaft 20. The guide rails 25 can be attached to the side wall structure 21 in the elevator shaft 20 by fastening brackets 26. The guide devices 27 maintain the car 10 in position in the horizontal plane as the car 10 moves up and down in the elevator shaft 20. The counterweight 41 can be supported on the guide rails in a corresponding manner, and the guide rails are attached to the wall structure 21 of the shaft 20.

[0037] The car 10 can transport people and / or goods between landings of a building.The elevator shaft 20 can be formed so that the wall structure 21 is formed by a solid wall, or so that the wall structure 21 is formed by an open steel structure.

[0038] The figure also illustrates a prior art speed governor system based on a mechanical pulley and rope system. This system includes an OSG sheave installed, for example, in the upper portion of the elevator shaft 20; a tensioning pulley 53 installed in the lower portion of the elevator shaft 20; and an OSG rope 51 installed to extend in a substantially tight, closed loop around the OSG sheave 52 and the tensioning pulley 53. A mechanical linkage system connects the OSG rope 51 to the safety gear 70. As the elevator car 10 moves, the OSG rope 51 extends around the OSG sheave 52 and the tensioning pulley 53. If the elevator car 10, and therefore the OSG rope 51, moves at an excessive speed, the rotation of the OSG sheave 52 in the upper portion of the elevator shaft 20 is stopped by a mechanism activated, for example, by centrifugal force, and the OSG rope 51 also stops moving. The stationary OSG rope 51 exerts tension on the mechanical linkage system at the still-moving car, causing the safety gear 70 to clamp onto the car guide rails 25, thereby stopping the car 10.

[0039] Figure 2 shows a schematic diagram of the device of the present invention,

[0040] The left side of the figure shows a hoisting member 42 connecting the car 10 to the counterweight 41 above the traction sheave 33. The hoisting member 42 further extends from the traction sheave 33 to the counterweight 41 via a first diverting pulley 35. The first diverting pulley 35 guides the hoisting member 42 from the traction sheave 33 to a position just above the counterweight 41. The mechanical brake 34 acts on the drive 31, the electric motor 32 and the traction sheave 33 (see FIG. Figure 1 ) on the rotating part of the lifting machinery 30.

[0041] The right side of the figure shows the elevator free-fall protection system of the present invention. The elevator free-fall protection system includes a free-fall protection member 100 connecting the car 10 and the counterweight 41. The free-fall protection member 100 can extend from the car 10 around the traction sheave 33 and the first diverting pulley 35 to the counterweight 41. Alternatively, the free-fall protection member 100 can extend around a separate free-fall sheave 36 and a separate second diverting pulley 37, rather than around the traction sheave 33 and the first diverting pulley 35.

[0042] The free fall protection member 100 may be attached to the sling 11 of the car 10 by a first attachment 140 and to the counterweight 41 by a second attachment 150. The first and second attachments 140, 150 may be separate and independent from corresponding attachments of the hoisting member 42.

[0043] The free fall protection system further comprises at least one free fall protection brake device 110, 120. The embodiment shown in the figure comprises two free fall protection brake devices 110, 120. The first free fall protection brake device 110 can act on the free fall protection member 100 between the traction sheave 33 or the separate free fall sheave 36 and the car 10. The second free fall protection brake device 120 can act on the free fall protection member 100 between the counterweight 41 and the first diverting pulley 35 or between the counterweight 41 and the second diverting pulley 37.

[0044] There may be elevator configurations that do not require the first diverting pulley 35 and the second diverting pulley 37. The hoisting member 42 would then extend only around the traction sheave 33. The free fall protection member 100 would then extend in a corresponding manner only around the traction sheave 33 or only around the free fall sheave 36 alone.

[0045] The use of two free-fall protection brakes 110, 120 is an advantageous embodiment, but the present invention can be implemented with only one free-fall protection brake 110, 120. In this case, the second free-fall protection brake 120 can be omitted. The use of two free-fall protection brakes 110, 120 on opposite sides of the sheave-pulley assemblies 33, 35 and 36, 37 eliminates the accumulation of slack in the free-fall protection member 100 on the sheave-pulley assemblies 33, 35 and 36, 37 when the free-fall protection brakes 110, 120 are activated. The use of two free-fall protection brakes 110, 120 also makes it easier to obtain a sufficiently large contact surface between the brake shoes in the free-fall protection brakes 110, 120 and the free-fall protection member 100.

[0046] The two free fall protection brake devices 110 , 120 may be controlled by a free fall protection controller 200 .

[0047] An emergency power supply 300 may be further provided for supplying power to the free fall protection controller 200 and the free fall protection brake devices 110, 120. The emergency power supply 300 supplies power to the free fall protection brake devices 110, 120 during a power outage, thereby eliminating activation of the free fall protection brake devices 110, 120 during a power outage.

[0048] The free fall protection brake devices 110, 120, the free fall protection controller 200, and the emergency power supply 300 can be located in the machine room of an elevator equipped with a machine room. On the other hand, the free fall protection brake devices 110, 120, the free fall protection controller 200, and the emergency power supply 300 can be located in the shaft 20 in connection with the traction sheave 33 in an elevator without a machine room.

[0049] The car 10 and the counterweight 41 are in a normal operating state of the elevator supported only by the hoisting member 42. The free fall protection member 100 may be pre-tensioned so that the car 10 and the counterweight 41 are supported by the free fall protection member 100 only in the event of a failure of the support by the hoisting member 42. The support by the hoisting member 42 may fail, for example, if the hoisting member 42 breaks or the rope termination of the hoisting member 42 breaks.

[0050] The hoisting member 42 may be sized such that the hoisting member 42 has a safety factor of at least 12, thereby meeting elevator safety regulations.

[0051] On the other hand, the free fall protection member 100 may be dimensioned so that the safety factor of the free fall protection member 100 is 2 to 8, advantageously 3 to 6. The safety factor of the free fall protection member 100 may therefore be much lower than the safety factor of the hoisting member 42. The safety factor of the free fall protection member 100 may be in the range of 25% to 50% of the safety factor of the hoisting member 42.

[0052] The pretensioning load of the free fall protection member 100 may be less than 50%, preferably less than 10%, of the pretensioning load of the hoisting member 42. The considerably lower pretensioning of the free fall protection member 100 compared to the pretensioning of the hoisting member 42 will ensure that during normal operation of the elevator only the hoisting member 42 carries the load of the car 10 and the counterweight 41.

[0053] The figure also shows a speed detector 400. Any type of speed detector 400 may be used in conjunction with the free-fall protection controller 200. The speed detector 400 may be based on an electronic device, such as one or more acceleration sensors, or on encoder data. An encoder may measure the rotational speed of a sheave or pulley in the system that is not acted upon by the mechanical brake. Alternatively, the speed detector 400 may be based on a mechanical device, such as rollers acting on the car guide rails 25.

[0054] Figure 3 A braking device that can be used in the present invention is shown.

[0055] The first and second braking devices 110, 120 may include a first braking portion 111 on a first side of the free fall protection member 100 and a second braking portion 112 on an opposite side of the free fall protection member 100. The two braking portions 111, 112 are movable in directions toward each other and in opposite directions away from each other. The two braking portions 111, 112 may further be fixed relative to the direction of movement of the free fall protection member 100. Therefore, during braking, the two braking portions 111, 112 may be pressed against opposite sides of the free fall protection member 100 with predetermined forces F1, F2. When the two braking portions 111, 112 move away from each other, the free fall protection brake 110 is released, allowing the free fall protection member 100 to move freely between the two braking portions 111, 112 again. The braking device 110 may also be implemented so that only one of the braking portions 111, 112 is movable.

[0056] The two braking parts 111, 112 can be electromechanically operated by an electromagnet. The two braking parts 111, 112 can be spring-loaded so that when the current to the electromagnet is interrupted (i.e., the electromagnet is deactivated), the two braking parts 111, 112 are pushed toward the free fall protection member 100. Therefore, when the electromagnet is deactivated, the brakes are engaged. The forces F1, F2 generated by the springs acting on the two braking parts 111, 112 and the friction between the two braking parts 111, 112 and the free fall protection member 100 will stop the movement of the free fall protection member 100 between the two braking parts 111, 112. The movement of the car 10 and / or the counterweight 41 will also be stopped.

[0057] By connecting an electric current to the electromagnet, the electromagnet is activated, and the electromagnetic force generated by the electromagnet pulls the two braking parts 111 and 112 away from each other in opposite directions. The electromagnetic force generated by the electromagnet is greater than the forces F1 and F2 generated by the springs. The free-fall component 100 is thus free to move between the two braking parts 111 and 112.

[0058] The free fall protection controller 200 may activate the free fall protection brakes 110, 120, for example, in the following events:

[0059] The speed of the free fall protection member 100 is too high.

[0060] The speed of the car 10 and / or counterweight 41 is too high.

[0061] When the car 10 approaches an obstacle in the shaft 20, such as the end of the shaft 20 or another car 10 moving in the shaft 20, the car 10 does not decelerate quickly enough.

[0062] During a normal emergency stop of the elevator, the car 10 does not decelerate quickly enough.

[0063] The free-fall protection brake devices 110 , 120 can also be activated manually, for example in the event that the machinery brake 34 is to be serviced.

[0064] When the car 10 is to be moved in a case where the free fall protection controller 200 is not operating or there is a power outage, the free fall protection brake devices 110, 120 may be manually released.

[0065] The free fall protection controller 200 may be arranged such that the free fall protection brake devices 110 , 120 may be controlled gradually.

[0066] For free fall situations, the free fall protection brakes 110, 120 do not need to be dimensioned in the same way as the safety gear must be dimensioned. It is sufficient to dimension the free fall protection brakes 110, 120 so that they can stop the absolute maximum imbalance of the elevator.

[0067] The free fall protection brake devices 110, 120 can be sized so that the combined deceleration of the machinery brake 34 and the free fall protection brakes 110, 120 does not exceed 0.5 g under any circumstances. An emergency terminal speed limiting (ETSL) system can further be used to ensure that the car 10 never hits the buffer at a speed exceeding 3 m / s, thereby eliminating the need for a locking device to prevent jumping in the elevator.

[0068] The lifting member 42 may be formed of at least one belt having a generally flat cross-section or at least one rope having a generally circular cross-section. The lifting member 42 may be formed of a plurality of belts or ropes extending in parallel. The material of the belts or ropes may be steel and / or fiber-reinforced polymer.

[0069] The free fall protection member 100 may also be formed from at least one belt having a substantially flat cross-section or at least one rope having a substantially circular cross-section. The free fall protection member 100 may be formed from a plurality of ropes extending in parallel. The belts or ropes may be made of steel and / or fiber-reinforced polymer.

[0070] On the other hand, the lifting member 42 can be formed of at least one flat or round rope or cable made of carbon fiber encapsulated in a high friction polymer. The lifting member 42 can be formed of several flat or round ropes or cables made of carbon fiber encapsulated in a high friction polymer extending in parallel.

[0071] The free fall protection member 100 may also be formed of at least one flat or round rope or cable made of carbon fibers encapsulated in a high friction polymer. The free fall protection member 100 may also be formed of several flat or round ropes or cables extending in parallel and made of carbon fibers encapsulated in a high friction polymer.

[0072] Flat ropes made of carbon fibers encapsulated in a high-friction polymer are sold for example under the trade name was sold.

[0073] If the free fall protection structure 100 is formed by several individual ropes having a substantially circular cross section or a substantially flat cross section, it is possible to use an individual free fall protection brake 110, 120 for each rope or a common free fall protection brake 110, 120 for all individual free fall protection ropes making up the free fall protection structure.

[0074] These figures show a case where the free fall protection brake devices 110, 120 are arranged to act directly on the free fall protection member 100. Another possibility is to have the brake act on the free fall sheave 36 of the free fall protection system. This solution can be used when the free fall protection member 100 extends over a separate free fall sheave 36. The free fall protection brake devices 110, 120 would then be arranged to act indirectly on the free fall protection member 100 via the free fall sheave 36.

[0075] The use of the present invention is not limited to the elevator disclosed in the accompanying drawings. The drawings show an elevator with a 1:1 suspension ratio, but the present invention can be used with elevators having any suspension ratio, such as 2:2, 4:1, and so on. The present invention can be used with any type of elevator, including those with or without a machine room. The counterweight can be located on either or both side walls or on the rear wall of the elevator shaft. The drive, electric motor, traction sheave, and machinery brake can be located in the machine room or elsewhere in the elevator shaft. In so-called rack-type elevators, the car guide rails can be located on opposite side walls or on the rear wall of the shaft.

[0076] It is obvious to a person skilled in the art that, as technology advances, the inventive concept can be implemented in various ways.The invention and its embodiments are not limited to the examples described above, but may vary within the scope of the claims.

Claims

1. An elevator, comprising: A car (10), a counterweight (41) and a lifting member (42), wherein the lifting member connects the car (10) and the counterweight (41) via a traction sheave (33), It is characterized in that the elevator also includes a free fall protection system, which includes: Free fall protection controller (200), A free fall protection member (100) connects the car (10) and the counterweight (41) via a separate free fall sheave (36), whereby the pre-tensioning load of the free fall protection member (100) is less than 50% of the pre-tensioning load of the hoisting member (42), so that the car (10) and the counterweight (41) are supported by the hoisting member (42) in normal operation and are supported by the free fall protection member (100) only in the event of a support failure of the hoisting member (42), at least one free fall protection brake device (110, 120) arranged to act on the free fall protection member to stop the movement of the free fall protection member (100) and thereby also the movement of the car (10) and / or the counterweight (41) in the event of a failure of a lifting member when activated by the free fall protection controller (200), The at least one free fall protection brake device (110, 120) comprises a first free fall protection brake device (110) and a second free fall protection brake device (120), wherein the first free fall protection brake device is located on a travel path of the free fall protection member between the car and a separate free fall sheave, and the second free fall protection brake device is located on a travel path of the free fall protection member between the counterweight and a separate free fall sheave.

2. The elevator according to claim 1, wherein The free fall protection system comprises a speed detector (400) which directly or indirectly measures the speed and / or acceleration-deceleration of the car (10) and / or the counterweight (41), whereby the free fall protection controller (200) is arranged to activate a first free fall protection brake device (110) and a second free fall protection brake device (120) when an abnormal speed and / or acceleration-deceleration is detected.

3. The elevator according to claim 1 or 2, wherein: The free fall protection system comprises a speed detector (400) which measures the speed of the free fall protection member (100), whereby the free fall protection controller (200) is configured to activate a first free fall protection brake device (110) and a second free fall protection brake device (120) when the speed of the free fall protection member (100) exceeds a predetermined value.

4. The elevator according to claim 1 or 2, wherein: The free fall protection system comprises a speed detector (400) for measuring the acceleration-deceleration of the car (10), whereby the free fall protection controller (200) is arranged to activate the at least one free fall protection brake device (110, 120) when the car (10) approaches an obstacle in the shaft, which is the end of the shaft (20) or another car (10) moving in the shaft (20), without the car (10) being decelerated quickly enough.

5. The elevator according to claim 1 or 2, wherein: The free fall protection system comprises a speed detector (400) measuring the acceleration-deceleration of the car (10), whereby the free fall protection controller (200) is arranged to activate a first free fall protection brake device (110) and a second free fall protection brake device (120) when the car (10) does not decelerate quickly enough in a normal emergency stop of the elevator.

6. The elevator according to any one of claims 1 to 5, wherein: The pre-tensioning load of the free-fall protection member (100) is less than 10% of the pre-tensioning load of the lifting member (42).

7. The elevator according to any one of claims 1 to 6, wherein: The lifting member (42) is formed from at least one flat or round rope made of carbon fibers encapsulated in a high friction polymer.

8. The elevator according to any one of claims 1 to 6, wherein: The free fall protection member (100) is formed from at least one flat or round rope made of carbon fibers encapsulated in a high friction polymer.

9. The elevator according to any one of claims 1 to 8, wherein: The free fall protection member (100) is attached to the car (10) by a first end connection (140) and to the counterweight (41) by a second end connection (150), the first end connection (140) and the second end connection (150) being separate and independent relative to corresponding end connections of the lifting member (42).

10. A method for controlling an elevator, the elevator comprising A car (10), a counterweight (41), a lifting member (42) and a free fall protection system, wherein the lifting member connects the car (10) and the counterweight (41) via a traction sheave (33), and the free fall protection system comprises: Free fall protection controller (200), A free fall protection member (100) connects the car (10) and the counterweight (41) via a separate free fall sheave (36), whereby the pre-tensioning load of the free fall protection member (100) is less than 50% of the pre-tensioning load of the hoisting member (42), so that the car (10) and the counterweight (41) are supported by the free fall protection member (100) only in the event of support failure of the hoisting member (42), at least one free fall protection brake device (110, 120) arranged to act on the free fall protection member to stop the movement of the free fall protection member (100), thereby also stopping the movement of the car (10) and / or the counterweight (41), The method comprises: When the lifting member (42) support fails, the at least one free fall protection brake device (110, 120) is activated using the free fall protection controller (200) to stop the movement of the free fall protection member (100) connected to a separate free fall sheave (36), thereby also stopping the movement of the car (10) and / or the counterweight (41), The at least one free fall protection brake device (110, 120) comprises a first free fall protection brake device (110) and a second free fall protection brake device (120), wherein the first free fall protection brake device is located on a travel path of the free fall protection member between the car and a separate free fall sheave, and the second free fall protection brake device is located on a travel path of the free fall protection member between the counterweight and a separate free fall sheave.

11. The method according to claim 10, wherein: When an abnormal speed and / or acceleration-deceleration of the car (10) and / or the counterweight (41) is directly or indirectly measured by a speed detector (400), the free fall protection controller (200) activates a first free fall protection brake device (110) and a second free fall protection brake device (120).

12. The method according to claim 10 or 11, wherein: When the speed of the free fall protection component (100) exceeds a predetermined value, the free fall protection controller (200) activates a first free fall protection braking device (110) and a second free fall protection braking device (120).

13. The method according to claim 10 or 11, wherein: The free fall protection controller (200) activates the at least one free fall protection brake device (110, 120) when the car (10) approaches an obstacle in the shaft, which is the end of the shaft (20) or another car (10) moving in the shaft (20), without the car (10) being decelerated quickly enough.

14. The method according to claim 10 or 11, wherein: When the speed of the car (10) does not decelerate quickly enough in a normal emergency stop of the elevator, the free fall protection controller (200) activates a first free fall protection brake device (110) and a second free fall protection brake device (120).

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