JP2019196241A - Speed governor and elevator - Google Patents

Abstract

To achieve a stabler operation when a speed governor is operated even in an elevator of a high rated speed.SOLUTION: A speed governor 101 for an elevator comprises: a speed governor pulley 13 on which a speed governor rope 10 moved interlockingly with a car in a hoistway is wound ; a pendulum 15 which is provided to the side part of the speed governor pulley 13 and displaced in the outer diameter direction of the speed governor pulley 13; a first holder 17 which is disposed so as to be able to collide with the pendulum 15 when the displacement of the pendulum 15 is set at a prescribed position; a weight 23 which is held by the first holder 17 and which falls to the speed governor rope 10 side to grasp the speed governor rope 10, thereby operating an elevator emergency stop device when the pendulum 15 and the first holder 17 collide with each other to be released; and a return prevention mechanism (e.g., first one-way clutch 25) for preventing the weight 23 from being returned in a direction opposite to the speed governor rope 10 side by reaction to the grasping of the speed governor rope 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a governor and an elevator, and is particularly suitable for application to a governor and an elevator that operate an elevator safety device using centrifugal force of a pendulum.

  Conventionally, an elevator is obliged to install a governor (governor) for urgently stopping the car when the car getting on / off speed exceeds a predetermined speed.

  Generally, a speed governor rotates with a speed governor pulley (governor pulley) supported by a shaft on which a speed governor rope (governor rope) that moves in conjunction with the passenger car is wound, and rotates more than a predetermined speed. When the speed reaches, the pendulum is displaced to the outer diameter side of the governor pulley against the return force of the return biasing body by centrifugal force, and installed at a position where it can collide with the pendulum when the displacement reaches the specified position. And a weight that is held by the holding body and that holds the governor rope and operates the emergency stop device in accordance with the release due to the collision between the pendulum and the holding body.

  Regarding such a governor, for example, Patent Document 1 proposes an elevator governor for the purpose of enabling an operation speed test to be easily performed. The elevator governor disclosed in Patent Document 1 increases the centrifugal force acting on the pendulum by running the cage while the weight is disposed on the rotating outer periphery of the pendulum during the governor operating speed test. The pendulum is displaced between predetermined positions below the car speed. The operator can check the operating speed of the pendulum that is displaced between the predetermined positions, so that the car can run at a steady speed, and the operating speed test of the elevator governor can be performed with simpler work than before. I have to.

JP 2006-327708 A

  However, in the case of the elevator governor disclosed in Patent Document 1, in an elevator with a high rated speed, the weight can be repelled by the reaction when the weight collides with the governor rope during the operation of the governor (governor). At this time, there is a problem that the operation of the governor is not stable.

  The present invention has been made in consideration of the above points. Even in an elevator with a high rated speed, the weight is repelled by the reaction when the weight collides with the governor rope during the operation of the governor. It is intended to propose a governor and an elevator that can prevent and realize more stable operation.

  In order to solve such a problem, in the present invention, a speed governor pulley around which a speed governor rope that moves in conjunction with a car in a hoistway of an elevator is wound, and provided on a side portion of the speed governor pulley. A pendulum that is displaced in the outer diameter direction of the governor pulley by centrifugal force caused by rotation together with the governor pulley, and a position where the pendulum can collide with the pendulum when the displacement of the pendulum reaches a predetermined position. When the pendulum and the first holding body collide and are released by being held by the first holding body and the first holding body that are disposed, the first holding body falls to the governor rope side. By grasping the governor rope, the weight for operating the emergency stop device of the elevator and the reaction of grasping the governor rope, the weight is returned in the opposite direction to the governor rope side. Prevent Governor to the detention device, comprising: a is provided.

  In order to solve such a problem, the present invention provides an elevator including a speed governor that operates an emergency stop device when an abnormal speed increase of a car is detected, and the speed governor is disposed in a hoistway. A governor pulley wound around a governor rope that moves in conjunction with the riding car, and a centrifugal force that is provided on a side portion of the governor pulley and rotates together with the governor pulley. A pendulum that is displaced in the outer diameter direction of the governor pulley, a first holding body that is disposed at a position where the pendulum can collide with the pendulum when the displacement of the pendulum reaches a predetermined position, and the first holding When the pendulum and the first holding body collide and are released by being held by a body, the emergency stop device falls to the governor rope side and grasps the governor rope. A weight for operating the governor and the governor Elevator the weight by reaction to grasp the flop, characterized in that it comprises a anti-return mechanism for preventing back in the opposite direction to the side of the governor rope is provided.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is an elevator with a fast rated speed, when a speed governor operate | moves, the speed governor and elevator which can implement | achieve more stable operation | movement can be provided.

It is a schematic block diagram of the elevator provided with the speed governor which concerns on the 1st-5th embodiment of this invention. It is a front view of the governor which concerns on 1st Embodiment. FIG. 3 is a cross-sectional view of the speed governor along the arrow A-A ′ in FIG. 2. It is a front view of the governor which concerns on 2nd Embodiment. FIG. 5 is a cross-sectional view of the governor along the arrow A-A ′ in FIG. It is a front view of the governor which concerns on 3rd Embodiment. FIG. 7 is a cross-sectional view of the speed governor along the arrow A-A ′ in FIG. 6. It is a front view of the governor which concerns on 4th Embodiment. It is sectional drawing of the speed governor along arrow A-A 'of FIG. It is a front view of the governor which concerns on 5th Embodiment. It is sectional drawing of the speed governor along arrow A-A 'of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of an elevator provided with a speed governor according to first to fifth embodiments of the present invention. In each embodiment (first to fifth embodiments) of the present invention, the detailed configuration of the governor is different, but the schematic configuration of the elevator 100 provided with the governor is common. First, the overall configuration of the elevator 100 will be described with reference to FIG.

  As shown in FIG. 1, in the elevator 100, the car 1 is connected to one end of the main rope 5 and moves in the hoistway 3 along the guide rail 2. The other end of the main rope 5 is connected to the counterweight 4. Further, in a machine room 6 provided at the upper part of the hoistway 3, a hoisting machine 7 for hoisting or lowering the main rope 5 and driving the car 1 up and down while balancing the weight by the counterweight 4; A speed governor 8 that detects abnormal acceleration of the car 1 is installed.

  A governor rope 10 connected to the emergency stop device operating means 9 of the car 1 is wound around the governor 8, and tension is applied to the governor rope 10 below the governor rope 10. A governor tension pulley 11 is provided. The emergency stop device operating means 9 operates an emergency stop device (safety device) that stops the car 1 urgently, and operates when the operation lever 22 connected to the speed governor rope 10 is pulled up. . The speed governor 8 operates to activate the emergency stop device when an abnormal speed increase of the car 1 is detected. Although details will be described later with reference to FIG. 2, when the speed governor 8 operates, the weight 23 (described later in FIG. 2) falls down to grasp the speed governor rope 10 and brake the speed governor rope 10. As a result, the operation lever 22 is pulled up, and as a result, the emergency stop device can be operated via the emergency stop device operating means 9.

  Below, the detailed structure of the speed governor 8 (speed governors 101-108) which concerns on each embodiment is demonstrated.

(1) First Embodiment FIG. 2 is a front view of a governor according to the first embodiment, and FIG. 3 is a cross-sectional view of the governor along the arrow AA ′ in FIG. FIG. 2 and 3, the speed governor 101 according to the first embodiment is shown as equivalent to the speed governor 8 shown in FIG.

  As shown in FIGS. 2 and 3, the governor 101 includes a governor pulley 13 around which a governor rope 10 is wound, and is fixed to a floor or the like of the machine room 6 at a lower portion. A governor housing 12 is provided.

  When the speed governor pulley 13 rotates with the speed governor pulley 13 and reaches a rotational speed higher than a predetermined speed, the speed control pulley 13 resists the return force of the return biasing body 14 due to centrifugal force toward the outer diameter side of the speed governor pulley 13. A pair of pendulums 15 that are displaced and a connecting link 16 that connects the pendulums 15 to each other are provided.

  Further, the governor 101 is provided with a first holding body 17 at a position where it collides with the pendulum 15 when it is displaced to a predetermined position. Here, the “predetermined position” due to the displacement of the pendulum 15 is specifically the position of the maximum amplitude at which the pendulum 15 is displaced when the speed of the car 1 reaches 1.4 times the rated speed. .

  On the other hand, on the governor housing 12 side, a rotating shaft 18 is provided, and a second holding body 19 having the rotating shaft 18 as a base point is installed. The second holding body 19 has a vertically long hole 20 on a side surface parallel to the side portion of the governor pulley 13.

  Further, the speed governor 101 has a weight 23 held by the first holding body 17 and the second holding body 19 as a configuration used for operating the emergency stop device operating means 9 of the car 1. Is provided. The weight 23 is connected to the first holding body 17 and connected to the second holding body via a first pin 21 that engages with the vertically long hole 20 of the second holding body 19. Is maintained in a position that does not fall. The weight 23 has a rotatable structure, and has a weight shaft 24 connected to the governor housing 12 at the rotation shaft portion.

  In the speed governor 101 configured as described above, when the first holding body 17 is released by colliding with the pendulum 15 displaced to a predetermined position, the weight 23 is tilted, and the end of the weight 23 is thus collapsed. The unit grasps the governor rope 10 and brakes the governor rope 10. At this time, the first pin 21 of the weight 23 slides downward in the vertically long hole 20. As a result, the operating lever 22 (see FIG. 1) connected to the governor rope 10 is pulled up, so that the emergency stop device operating means 9 operates.

  Here, when the speed governor 8 (elevator 100) according to the present invention operates the emergency stop device operation means 9 by operating the speed governor 8, the force is transmitted only in the direction in which the weight 23 falls. A return prevention mechanism is provided. In the present invention, by providing this return prevention mechanism, even when the elevator 100 is an elevator having a high rated speed, when the speed governor 8 operates, the weight 23 falls down and collides with the speed governor rope 10. Since the weight 23 can be prevented from being bounced by the reaction, the operation of the speed governor 8 can be stabilized.

  As a specific configuration of such a return prevention mechanism, the speed governor 101 according to the first embodiment is provided only in the direction in which the weight 23 falls at the connection portion between the second holding body 19 and the rotary shaft 18. A first one-way clutch 25 that transmits force is provided. The one-way clutch is a known clutch mechanism that transmits force only in one direction, and a sprag type, a cam type (roller type), or the like is known, but the first one-way clutch 25 in the present embodiment. Is not limited to a particular structure.

  The speed governor 101 according to the first embodiment includes the first one-way clutch 25 as described above, so that when the speed governor 101 operates, the weight 23 falls and collides with the speed governor rope 10. In addition, the first one-way clutch 25 interrupts the force to return in the reverse direction (the reverse direction of the fallen direction) due to the reaction of the collision. As a result, even when the rated speed of the elevator 100 is high, that is, when the speed of the elevator 100 is high, the tension of the governor rope 10 is strong, and the weight 23 collides with the governor rope 10. Even if the reaction force can be increased, the weight 23 can be prevented from being flipped in the opposite direction to the governor rope 10, and the operation of the governor 101 can be made more stable. It becomes.

  In addition, after the operation of the governor 101, the weight 23 can be returned to the normal posture that does not fall down simply by removing and reattaching the second holding body 19 and the rotating shaft 18, There is also an effect that the return procedure is easy.

(2) Second Embodiment FIG. 4 is a front view of a speed governor according to a second embodiment, and FIG. 5 is a cross section of the speed governor along the arrow AA ′ in FIG. FIG. 4 and 5, the governor 102 according to the second embodiment is shown as an equivalent to the governor 8 shown in FIG.

  The speed governor 102 according to the second embodiment has many configurations common to the speed governor 101 according to the first embodiment shown in FIGS. 2 and 3, and these are common. About a structure, the same number is attached | subjected in FIG.5 and FIG.6, and each description is abbreviate | omitted.

  The speed governor 102 according to the second embodiment includes a first torsion spring 26 installed around the rotation shaft 18 as a specific configuration of the return prevention mechanism in the present invention. As shown in FIG. 5, the first torsion spring 26 is a spring that receives a torsional moment around the central axis of the coil, and one end is connected to the side surface of the governor housing 12 and the other end is the second. The speed governor housing 12 and the second holding body 19 are connected by being connected to the side surface of the holding body 19.

  In the governor 102 according to the second embodiment, the first torsion spring 26 is provided as described above, so that the weight 23 falls down and collides with the governor rope 10 during the operation of the governor 102. In addition, the force to return to the reverse direction (the reverse direction of the collapsed direction) due to the reaction of the collision is reduced by the first torsion spring 26. Note that the first torsion spring 26 enhances the effect of reducing the force to return the weight 23 by setting the state where the weight 23 is tilted during operation of the governor 102 to a state where the return force is small. it can. As a result, similar to the governor 101 according to the first embodiment, even when the rated speed of the elevator 100 is high, the weight 23 is repelled in the opposite direction to the governor rope 10. Therefore, the operation by the speed governor 102 can be further stabilized.

  In addition, after the operation of the speed governor 102, the weight 23 can be tilted in a normal state only by raising the second holding body 19 to a position before the operation of the speed governor 102 without removing the components. Since it is possible to return to a non-posture, there is also an effect that the return procedure is easy.

(3) Third Embodiment FIG. 6 is a front view of a governor according to a third embodiment, and FIG. 7 is a cross-sectional view of the governor along the arrow AA ′ in FIG. FIG. 6 and 7 show the governor 103 according to the third embodiment as equivalent to the governor 8 shown in FIG.

  The speed governor 103 according to the third embodiment has many configurations common to the speed governor 101 according to the first embodiment shown in FIG. 2 and FIG. About a structure, the same number is attached | subjected in FIG.6 and FIG.7, and each description is abbreviate | omitted.

  The speed governor 103 according to the third embodiment includes a plate 27 and a second torsion spring 28 as a specific configuration of the return prevention mechanism in the present invention. As shown in FIG. 7, the plate 27 is fixed to the end of the rotating shaft 18 on the side opposite to the governor housing 12. For the second torsion spring 28, the same parts as those of the first torsion spring 26 described in the second embodiment can be used, but their installation positions are different. That is, as shown in FIG. 7, the second torsion spring 28 has the one end connected to the side surface of the second holding body 19 and the other end connected to the side surface of the plate 27. The body 19 and the plate 27 are connected.

  The speed governor 103 according to the third embodiment includes the plate 27 and the second torsion spring 28 as described above, so that the weight 23 falls down during operation of the speed governor 103 and the speed governor rope 10 When a collision occurs, the second torsion spring 28 reduces the force of returning to the reverse direction (the reverse direction of the collapsed direction) due to the reaction of the collision. Note that, similarly to the first torsion spring 26 in the second embodiment, the second torsion spring 28 sets the state in which the weight 23 during the operation of the governor 102 has fallen to a state where the restoring force is small. Thus, the effect of reducing the force for returning the weight 23 can be enhanced. As a result, similar to the speed governors 101 and 102 according to the above-described embodiments, even if the rated speed of the elevator 100 is high, the weight 23 is elastic in the direction opposite to the speed governor rope 10. It can be expected that the effect of preventing this will occur, and the operation of the governor 103 can be further stabilized.

  Further, after the operation of the speed governor 103, the weight 23 can be tilted in a normal state only by raising the second holding body 19 to a position before the operation of the speed governor 103 without removing the components. Since it is possible to return to a non-posture, there is also an effect that the return procedure is easy.

(4) Fourth Embodiment FIG. 8 is a front view of a governor according to a fourth embodiment, and FIG. 9 is a cross-sectional view of the governor along the arrow AA ′ in FIG. FIG. 8 and 9, the governor 104 according to the fourth embodiment is shown as an equivalent to the governor 8 shown in FIG.

  Further, the governor 104 according to the fourth embodiment has many configurations common to the governor 101 according to the first embodiment shown in FIG. 2 and FIG. About a structure, the same number is attached | subjected in FIG.8 and FIG.9, and each description is abbreviate | omitted.

  The speed governor 104 according to the fourth embodiment includes a second pin 29, a mounting base 30, and a leaf spring 31 as a specific configuration of the return prevention mechanism in the present invention. As shown in FIG. 9, the second pin 29 is fixed below the rotating shaft 18 in the second holding body 19. The mounting base 30 is a pedestal fixed to the bottom surface of the governor housing 12. One end of the leaf spring 31 is attached to the upper surface of the mounting base 30, and the other end is in contact with the second pin 29 so that a load is applied vertically upward. The leaf spring 31 may be directly attached to the upper surface of the governor housing 12, and in such a case, the mounting base 30 is not necessary.

  In the governor 104 according to the fourth embodiment, the operation of the governor 104 is provided by providing the second pin 29, the mounting base 30, and the leaf spring 31 below the rotating shaft 18 as described above. When the weight 23 sometimes falls and collides with the governor rope 10, the force to return to the reverse direction (reverse direction of the fall direction) due to the reaction of the collision is reduced by the leaf spring 31. As a result, similar to the speed governors 101 to 103 according to the above-described embodiments, even if the rated speed of the elevator 100 is high, the weight 23 is elastic in the direction opposite to the speed governor rope 10. It can be expected to be effective in preventing the operation, and the operation of the governor 104 can be further stabilized.

  In addition, after the operation of the speed governor 104, the weight 23 can be tilted in a normal state only by raising the second holding body 19 to a position before the operation of the speed governor 104 without removing the components. Since it is possible to return to a non-posture, there is also an effect that the return procedure is easy.

(5) Fifth Embodiment FIG. 10 is a front view of a speed governor according to a fifth embodiment, and FIG. 11 is a cross section of the speed governor along the arrow AA ′ in FIG. FIG. 10 and 11, a speed governor 105 according to the fifth embodiment is illustrated as an equivalent to the speed governor 8 illustrated in FIG.

  Further, the speed governor 105 according to the fifth embodiment has many configurations common to the speed governor 101 according to the first embodiment illustrated in FIG. 2 and FIG. About a structure, the same number is attached | subjected in FIG.10 and FIG.11, and each description is abbreviate | omitted.

  The speed governor 105 according to the fifth embodiment includes a second one-way clutch 32 that transmits a force only in the direction in which the weight 23 falls, as a specific configuration of the return prevention mechanism in the present invention. Parts similar to the first one-way clutch 25 described in the first embodiment can be used for the second one-way clutch 32, but their installation positions are different. That is, as shown in FIG. 11, the second one-way clutch 32 is installed on the weight shaft 24 of the weight 23.

  In the governor 105 according to the fifth embodiment, when the second one-way clutch 32 is provided as described above, the weight 23 falls down and collides with the governor rope 10 during the operation of the governor 105. In addition, the force to return to the reverse direction (the reverse direction of the collapsed direction) due to the reaction of the collision is interrupted by the second one-way clutch 32. As a result, similar to the governors 101 to 104 according to the above-described embodiments, even if the rated speed of the elevator 100 is high, the weight 23 is elastic in the direction opposite to the governor rope 10. It can be expected that the effect of preventing this will occur, and the operation of the governor 105 can be further stabilized.

  In addition, this invention is not limited to each above-mentioned embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 1 Car 2 Guide rail 3 Hoistway 4 Balance weight 5 Main rope 6 Machine room 7 Hoisting machine 8,101-105 Speed governor 9 Emergency stop device operation means 10 Speed governor rope 11 Speed governor tension pulley 12 Speed governor Machine housing 13 Speed governor pulley 14 Return biasing body 15 Pendulum 16 Link 17 First holding body 18 Rotating shaft 19 Second holding body 20 Hole 21 First pin 22 Operating lever 23 Weight 24 Weight shaft 25 First one-way clutch 26 First torsion spring 27 Plate 28 Second torsion spring 29 Second pin 30 Mounting base 31 Plate spring 32 Second one-way clutch 100 Elevator

Claims (14)

A governor pulley wrapped around a governor rope that moves in conjunction with the car in the elevator hoistway;
A pendulum provided on a side of the governor pulley and displaced in the outer diameter direction of the governor pulley by centrifugal force by rotating together with the governor pulley;
A first holding body arranged at a position capable of colliding with the pendulum when the displacement of the pendulum reaches a predetermined position;
By holding the first holding body, and when the pendulum and the first holding body collide and are released, by falling to the governor rope side and grasping the governor rope A weight for operating the elevator emergency stop device,
A return prevention mechanism for preventing the weight from being returned in a direction opposite to the side of the governor rope by the reaction of grasping the governor rope;
A speed governor comprising: A rotating shaft provided in a governor casing installed below the governor pulley;
A second holding body installed with the rotation axis as a base point and having a vertically long hole on a side surface;
A first pin connected to the weight held by the first holding body and engaged with the vertically long hole of the second holding body;
Further comprising
The speed governor according to claim 1, wherein the return prevention mechanism is installed at a connection portion between the rotating shaft and the second holding body. The speed governor according to claim 2, wherein the return prevention mechanism is a one-way clutch. The return prevention mechanism is a torsion spring having one end connected to a side surface of the governor housing and the other end connected to a side surface of the second holding body. Governor. The return prevention mechanism is
A plate provided at an end of the rotating shaft opposite to the governor housing;
A torsion spring having one end connected to the side surface of the second holding body and the other end connected to the side surface of the plate;
The speed governor according to claim 2, comprising: A rotating shaft provided in a governor casing installed below the governor pulley;
A second holding body installed with the rotation axis as a base point and having a vertically long hole on a side surface;
A first pin connected to the weight held by the first holding body and engaged with the vertically long hole of the second holding body;
Further comprising
The return prevention mechanism is
A second pin provided below the rotating shaft of the second holding body;
A mounting base fixed to the bottom surface of the governor housing;
A leaf spring that is in contact with the second pin and is mounted in a state in which a load is applied vertically upward on the upper surface of the mounting base;
Comprising
The speed governor according to claim 1, wherein the return prevention mechanism is provided below the rotation shaft of the second holding body. The speed governor according to claim 1, wherein the return prevention mechanism is a one-way clutch installed on a rotating shaft portion of the weight. An elevator equipped with a speed governor that activates an emergency stop device when an abnormal speed increase of the car is detected,
The governor is
A speed governor pulley wound with a speed governor rope that moves in conjunction with the car in the hoistway;
A pendulum provided on a side of the governor pulley and displaced in the outer diameter direction of the governor pulley by centrifugal force by rotating together with the governor pulley;
A first holding body arranged at a position capable of colliding with the pendulum when the displacement of the pendulum reaches a predetermined position;
By holding the first holding body, and when the pendulum and the first holding body collide and are released, by falling to the governor rope side and grasping the governor rope A weight for operating the emergency stop device;
A return prevention mechanism for preventing the weight from being returned in a direction opposite to the side of the governor rope by the reaction of grasping the governor rope;
An elevator characterized by comprising: The governor is
A rotating shaft provided in a governor casing installed below the governor pulley;
A second holding body installed with the rotation axis as a base point and having a vertically long hole on a side surface;
A first pin connected to the weight held by the first holding body and engaged with the vertically long hole of the second holding body;
Further comprising
The elevator according to claim 8, wherein the return prevention mechanism is installed at a connection portion between the rotating shaft and the second holding body. The elevator according to claim 9, wherein the return prevention mechanism is a one-way clutch. The return prevention mechanism is a torsion spring having one end connected to a side surface of the governor casing and the other end connected to a side surface of the second holding body. Elevator. The return prevention mechanism is
A plate provided at an end of the rotating shaft opposite to the governor housing;
A torsion spring having one end connected to the side surface of the second holding body and the other end connected to the side surface of the plate;
The elevator according to claim 9, comprising: The governor is
A rotating shaft provided in a governor casing installed below the governor pulley;
A second holding body installed with the rotation axis as a base point and having a vertically long hole on a side surface;
A first pin connected to the weight held by the first holding body and engaged with the vertically long hole of the second holding body;
Further comprising
The return prevention mechanism is
A second pin provided below the rotating shaft of the second holding body;
A mounting base fixed to the bottom surface of the governor housing;
A leaf spring that is in contact with the second pin and is attached in a state in which a load is applied vertically upward on the upper surface of the mounting base;
Comprising
The elevator according to claim 8, wherein the return prevention mechanism is provided below the rotation shaft of the second holding body. The elevator according to claim 8, wherein the return prevention mechanism is a one-way clutch installed on a rotating shaft portion of the weight.

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