JP6624523B2 - elevator - Google Patents

Description

  The present invention relates to an elevator having a counterweight.

  Conventionally, a traction type, in which a car and a counterweight (balance weight) are connected by a rope wound around a pulley (sheave), and the car is raised and lowered by driving the rope with a hoisting machine (hoisting device). BACKGROUND ART An elevator is known (see Patent Document 1). In this elevator, the counterweight is guided by a first guide rail extending vertically in the hoistway, and the car is also guided by a second guide rail extending vertically in the hoistway.

  There is a gap between the counterweight and the first guide rail to reduce the resistance between the counterweight and the first guide rail when the counterweight moves up and down. When the rocker swings, the counter weight moves with respect to the first guide rail due to the presence of the gap, whereby the counter weight may collide with the first guide rail and cause bending or the like. Thus, when the first guide rail is bent or the like, the counterweight tends to come off from the first guide rail.

JP 2016-210583 A

  Therefore, the present invention provides an elevator capable of suppressing damage to a guide rail due to a counterweight when a building shakes.

The elevator of the present invention has a car, a counterweight, a rope connecting the car and the counterweight, and a sheave around which the rope is wound, and the car and the counterweight are rotated by rotating the sheave. A hoisting device for raising and lowering, a guide rail extending vertically and guiding the counterweight, a swing detection sensor attached to the counterweight, and a gripping device attached to the counterweight and capable of holding the guide rail, A control unit that can control the hoisting device and the gripping device, and the control unit controls the rotation speed of the sheave so as to cancel a pitching component of the shaking detected by the shaking detection sensor. , roll component of the shake detected by the shake detection sensor When exceeding the roll reference value of the constant, in a state of stopping the car, thereby sandwiching the guide rail to the gripping device, characterized in that.

  In the above elevator, when the counter weight swings beyond the reference value in the horizontal direction, the gripping device attached to the counter weight holds the guide rail, and thereafter, by suppressing the horizontal swing of the counter weight, The collision of the counterweight with the guide rail is suppressed. Therefore, damage to the guide rail due to the counter weight colliding with the guide rail can be suppressed.

Further , according to such a configuration, since the vertical swing of the counterweight is suppressed, damage to the guide rail due to the vertical swing of the counterweight can be suppressed.

  In the elevator, for example, the control unit may start controlling the rotational speed of the sheave so as to cancel the pitch component when the pitch component exceeds a predetermined first pitch reference value.

  In the elevator, when the roll component of the shake detected by the shake detection sensor exceeds a predetermined roll reference value, and the pitch component exceeds a predetermined second pitch reference value. In at least one of the cases, the car may be stopped at the nearest floor.

  According to this configuration, when the counterweight swings largely in the lateral direction, the car stops at the nearest floor, so that, for example, the user can escape from the car and the influence on the user can be suppressed.

  As described above, according to the present invention, it is possible to provide an elevator that can suppress damage to the guide rail due to the counterweight when the building shakes.

FIG. 1 is a diagram for explaining a configuration of an elevator according to one embodiment of the present invention. FIG. 2 is a diagram for explaining the configuration of the elevator according to one embodiment of the present invention. FIG. 3 is a diagram for explaining the configuration of the elevator according to one embodiment of the present invention. FIG. 4 is a diagram for explaining the configuration of the elevator according to one embodiment of the present invention. FIG. 5 is a block diagram of an elevator according to one embodiment of the present invention.

  Hereinafter, an elevator according to the present invention will be described. Such an elevator, in addition to a general configuration such as a control unit, a guide rail, a car, and a counterweight, can detect a swing of the counterweight and a guide rail that guides the counterweight, and A gripping device attached to the counterweight. In this elevator, when the counterweight swings largely in the lateral direction, the guide rail is held by the gripping device while the car is stopped. Thereby, the collision of the counterweight with the guide rail can be suppressed, and the damage to the guide rail due to the collision of the counterweight can be suppressed.

  The elevator is installed in a building having a plurality of floors. As shown in FIG. 1, the elevator includes a car 10, a counterweight 11, a hoisting device 12 having a sheave 120, and a rope 13 wound around the sheave 120 and connecting the car 10 and the counterweight 11. A first guide rail (guide rail) 14 that extends in the up-down direction (vertical direction, Z-axis direction) and guides the counterweight 11, an acceleration sensor (sway detection sensor) 15 attached to the counterweight 11, and a counterweight 11 And a gripping device 16 capable of holding the first guide rail 14. The elevator 1 also includes a control microcomputer (control unit) 17 (see FIG. 5) capable of controlling the hoisting device 12 and the gripping device 16. The elevator 1 of the present embodiment also includes a second guide rail 18 (see FIG. 1) that extends in the up-down direction (vertical direction, Z-axis direction) and guides the elevator car 10 to move up and down.

  The car 10 moves up and down in the hoistway 19 (moves up and down) and can be stopped at a position facing the landing 20.

  In the elevator 1 of the present embodiment, a pair of second guide rails 18 are provided so as to sandwich the car 10 from both sides in the Y-axis direction (see FIG. 1). Each of the second guide rails 18 has, for example, a bar shape extending in the vertical direction (for example, the Z-axis direction). Specifically, the second guide rail 18 has a rod shape extending continuously from the lowest layer to the uppermost layer of the building where the elevator 1 is installed. Each of the second guide rails 18 has a T-shaped cross section (see FIG. 2) orthogonal to the extending direction (Z-axis direction).

  The hoisting device 12 has a motor (not shown) and an encoder (not shown) capable of detecting a rotation speed and a rotation direction of the motor in addition to the sheave 120 described above. Further, the hoisting device 12 is capable of hoisting the rope 13 and raising and lowering the car 10 and the counterweight 11 in accordance with an instruction from the control microcomputer 17.

  Specifically, the hoisting device 12 raises the car 10 and lowers the counterweight 11 by winding up the rope 13 so that the sheave 120 rotates clockwise in FIG. 1. Further, the hoisting device 12 lowers the car 10 and raises the counterweight 11 by winding up the rope 13 so that the sheave 120 rotates counterclockwise in FIG.

  The acceleration sensor 15 is, for example, a three-axis acceleration sensor that can detect the swing of the counterweight 11 in the X-axis direction (horizontal direction), the Y-axis direction (horizontal direction), and the Z-axis direction (vertical direction). When the acceleration sensor 15 detects the swing of the counterweight 11, the components corresponding to the respective directions of the swing (for example, the X-axis component of the swing, the Y-axis component of the swing, and the Z-axis component of the swing). Is output to the control microcomputer 17. In the elevator 1 of the present embodiment, the acceleration sensor 15 is attached to, for example, an upper portion (an upper portion in the Z-axis direction) of the counterweight 11.

  The counterweight 11 is a counterweight of the car 10. Since the counterweight 11 is connected by the rope 13 as described above, the counterweight 11 moves up and down in the hoistway 19 in conjunction with the car 10. Specifically, the counterweight 11 is lowered when the car 10 is moving up, and is raised when the car 10 is moving down. Note that the weight of the counterweight 11 is, for example, "the weight of the car 10" plus "the weight of half of the maximum number of people who can load the car 10".

  In the elevator 1 of the present embodiment, the counterweight 11 has the weight 110 and the frame 111 that surrounds the weight 110. In addition, on the side surface of the frame 111 in the lateral direction (Y-axis direction), the one end portion of the counterweight 11 and the first view shown in the schematic view of FIG. A groove 1110 is provided as shown in a schematic diagram showing the shape and positional relationship of one guide rail 14). The first guide rail 14 is inserted into the groove 1110.

  In the elevator 1 of the present embodiment, a pair of first guide rails 14 are provided so as to sandwich the counterweight 11 from both sides in the Y-axis direction (see FIG. 1). Each of the first guide rails 14 has, for example, a rod shape extending in a vertical direction (for example, a Z-axis direction). Specifically, the first guide rails 14 extend continuously from the lowest level to the highest level of the building where the elevator 1 is installed. Note that each of the first guide rails 14 has a T-shaped cross section (see FIG. 2) orthogonal to the extending direction (Z-axis direction).

  Specifically, as shown in the schematic diagram of FIG. 4, the first guide rail 14 has a main body 140 and a protrusion 141 protruding from the main body 140 toward the counterweight 11. The protrusion 141 of the first guide rail 14 is inserted into the groove 1110 in the end 112 of the frame 111 of the counterweight 11, in other words, the first guide rail 14 is located inside the groove 1110. Then, the counterweight 11 is guided in the vertical direction (Z-axis direction).

  In FIG. 4, the first guide rail 14 and the counter weight 11 are separated from each other, but the counter weight 11 collides with the first guide rail 14 when the counter weight 11 swings greatly in the lateral direction (Y-axis direction) or in the oblique direction. There is a risk. Further, if the first guide rail 14 is repeatedly hit by the counterweight 11, there is a possibility that the first guide rail 14 will bend outward as a whole. In this case, the protrusion 141 may not be located inside the groove 1110, and the first guide rail 14 may not be able to guide the counterweight 11. The swing of the counterweight 11 occurs, for example, when the building in which the elevator 1 is installed swings due to an earthquake or a strong wind, and the rope 13 swings.

  On the other hand, in the elevator 1 of the present embodiment, the gripping device 16 holds the first guide rail 14 when the counterweight 11 largely swings in the lateral direction. Thus, the collision of the counterweight 11 with the first guide rail 14 can be suppressed by suppressing the lateral swing of the counterweight 11 thereafter. Hereinafter, the gripping device 16 will be described in detail.

  The gripping device 16 is attached to, for example, a lower portion (a lower portion in the Z-axis direction) of the frame 111 of the counterweight 11 (see FIG. 1). In the elevator 1 of the present embodiment, the gripping devices 16 are arranged on one side of the pair of first guide rails 14 and on the other side of the pair of first guide rails 14, respectively. Further, the gripping device 16 is fixed to the frame 111 of the counter weight 11, a brake portion 160 for holding the first guide rail 14, a shaft portion 161 connected to the brake portion 160 and extending in the lateral direction (Y-axis direction). (A schematic diagram showing the shape and the positional relationship of the first guide rail 14 and the gripping device 16 as viewed from the schematic view of FIG. 3 (the extending direction of the first guide rail 14 (Z-axis direction)). See Fig.).

  In the elevator 1 of the present embodiment, the brake unit 160 is, for example, an electromagnetic brake. The brake unit 160 includes a pair of pad portions 163 that are separated in the X-axis direction and can be in contact with the protrusions 141 of the first guide rail 14, respectively, and a pair of cylinder portions 164 connected to the pair of pad portions 163, respectively. .

  The pair of cylinder units 164 can move (in the direction indicated by the arrow in FIG. 3 (X-axis direction)) such that the distance between them in the X-axis direction changes according to an instruction from the control microcomputer 17. Thereby, the pair of cylinder parts 164 can change the distance between the pair of pad parts 163 in the X-axis direction.

  The pair of pad portions 163 can move (in the direction indicated by the arrow in FIG. 3) such that the distance between them in the X-axis direction changes under the control of the cylinder portion 164 in accordance with an instruction from the control microcomputer 17. The pair of pad portions 163 move so as to approach each other in the X-axis direction, thereby holding the projection 141 of the first guide rail 14 in the X-axis direction. Accordingly, when the first guide rail 14 is held in the X-axis direction by the pad portion 163, the relative movement between the first guide rail 14 and the gripping device 16 is suppressed, so that the first guide rail 14 and the counter The relative movement with respect to the weight 11 is suppressed. As a result, collision of the counterweight 11 with the first guide rail 14 due to relative movement between the first guide rail 14 and the counterweight 11 is suppressed.

  On the other hand, the pair of pad portions 163 releases the protrusion 141 of the first guide rail 14 by moving so that the distance between them in the X-axis direction increases.

  In the elevator 1 of the present embodiment, when the pad portion 163 releases the first guide rail 14, the fixing portion 162 is fixed to the frame 111, and is horizontally (Y-axis direction) with respect to the shaft portion 161. It is movably attached to Therefore, even if the fixing portion 162 swings in the horizontal direction (Y-axis direction) together with the counterweight 11, the movement of the shaft portion 161 does not interlock with the movement of the fixing portion 162. It does not shake. In other words, the shaft portion 161 absorbs the swing of the counterweight 11 in the lateral direction (Y-axis direction). Therefore, even if the counterweight 11 swings in the lateral direction (Y-axis direction), the pad portion 163 of the brake portion 160 connected to the shaft portion 161 is a portion where the projecting portion 141 of the first guide rail 14 can be pinched. Will be located.

  On the other hand, in a state where the pad portion 163 holds the first guide rail 14, the fixing portion 162 is fixed to the frame 111 and is fixed in the lateral direction (Y-axis direction) with respect to the shaft portion 161. I have. Therefore, when the fixed portion 162 swings in the horizontal direction (Y-axis direction) together with the counterweight 11, the movement of the shaft portion 161 and the movement of the fixed portion 162 are interlocked. . Therefore, even if the counterweight 11 swings in the horizontal direction (Y-axis direction), the relative movement between the first guide rail 14 and the counterweight 11 is suppressed, and the first weight of the counterweight 11 caused by this movement is reduced. Collision with the guide rail 14 is suppressed.

  As shown in FIG. 5, the control microcomputer 17 is connected to the hoisting device 12, the acceleration sensor 15, and the brake unit 160 of the gripping device 16, respectively.

  The control microcomputer 17 determines that the “lateral swing component of the swing of the counterweight 11 (for example, at least one of the X-axis component and the Y-axis component)” detected by the acceleration sensor 15 is “a predetermined counterweight vibration excessive value”. (Rolling reference value) ", the first guide rail 14 is held by the gripping device 16 with the car 10 stopped. The counterweight vibration excessive value (rolling reference value) is converted based on “damage to the first guide rail 14 caused by the counterweight 11 rolling”. Specifically, the counterweight excessive vibration value (rolling reference value) is defined as “a counterweight 11 that may damage the first guide rail 14 when the counterweight 11 collides with the first guide rail 14 more than once. The kinetic energy of the guide rail 14 is bent), and the value of the lateral component (X-axis direction component or Y-axis direction component) of the acceleration of the counterweight 11 that the counterweight 11 has this kinetic energy is calculated. Is set as a lower value.

  The “kinetic energy that damages the first guide rail 14 when the counter weight 11 collides with the first guide rail 14 a plurality of times (for example, that the first guide rail 14 bends)” is these ( The case where the counterweight 11 and the first guide rail 14) collide in the X-axis direction may be different from the case where they collide in the Y-axis direction. Therefore, the excessive counterweight vibration value in the X-axis direction (rolling reference value) may be different from the excessive counterweight vibration value in the Y-axis direction (rolling reference value). In any direction, the excessive counterweight vibration value (rolling reference value) is determined by the mass and shape of the counterweight 11, the rigidity and shape of the first guide rail 14, and the like.

  In the elevator 1 according to the present embodiment, the control microcomputer 17 reads the “rolling component of the counterweight 11 (for example, either the X-axis component or the Y-axis component) detected by the acceleration sensor 15 while the car 10 is stopped. On the other hand, when “)” exceeds the counterweight vibration excessive value (rolling reference value), the first guide rail 14 is held by the gripping device 16 while the car 10 is stopped. Further, in the elevator 1 of the present embodiment, the control microcomputer 17 detects the “rolling component (for example, at least one of the X-axis direction component and the Y-axis direction component) of the counterweight 11 detected by the acceleration sensor 15 while the car 10 moves up and down. If either one of the above) exceeds the counterweight vibration excessive value (rolling reference value), the car 10 is stopped at the nearest floor, and then the gripper 16 causes the first guide rail 14 to be clamped.

  Note that, in the elevator 1 of the present embodiment, the control microcomputer 17 detects a “rolling component (for example, either the X-axis component or the Y-axis component) of the counterweight 11 detected by the acceleration sensor 15 while the car 10 is moving up and down. ) Within a predetermined time (for example, the shortest time (for example, 10 seconds) required to move to the next stopable floor) after the counterweight vibration excessive value (rolling reference value) is exceeded. If the car cannot arrive at the nearest floor, the car 10 is immediately decelerated and stopped, and then the gripper 16 causes the first guide rail 14 to be held. Specifically, driving that cannot reach the nearest floor within a predetermined time after exceeding the counterweight vibration excessive value (rolling reference value) is performed, for example, from the lowest floor to the highest floor of the building where the elevator 1 is installed. Shuttle operation for raising and lowering the car 10 without stopping it, and express for raising and lowering the car 10 without stopping between a part of the plurality of floors (specifically, the first floor to the tenth floor) of the building. Driving.

  Further, in the elevator 1 according to the present embodiment, the control microcomputer 17 determines that the “vertical swing component (for example, the Z-axis component) of the counterweight 11” detected by the acceleration sensor 15 is “a predetermined abnormal vibration occurrence detection threshold value (the (The one pitch reference value), the control of the rotation speed of the sheave 120 of the hoisting device 12 is started so as to cancel the pitch component. The control microcomputer 17 controls the rotation speed of the sheave 120 by changing the rotation speed of the motor of the hoisting device 12.

  The abnormal vibration occurrence detection threshold value (first pitch reference value) is “a counter weight 11 detected by the acceleration sensor 15 when the car 10 is in a normal state (no trouble has occurred) and is moving up and down. Is calculated based on the pitching component (for example, the component in the Z-axis direction). Specifically, the abnormal vibration occurrence detection threshold (first pitch reference value) is determined by the acceleration sensor 15 when the car 10 is in a normal state (no trouble has occurred) and is moving up and down at the maximum speed. This is a predetermined value set by adding a predetermined allowable value to the detected pitch component (for example, the Z-axis direction component) of the counterweight 11. In the elevator 1 according to the present embodiment, the abnormal vibration occurrence detection threshold value (first pitch reference value) is larger than the counterweight vibration excessive value (rolling reference value).

  Specifically, when the counterweight 11 is rising and the upward or downward pitch component exceeds the abnormal vibration occurrence detection threshold (first pitch reference value), the control microcomputer 17 determines the pitch component. The control of the rotational speed of the sheave 120 to cancel out is started. Also, the control microcomputer 17 cancels the pitch component when the upward or downward pitch component exceeds the abnormal vibration occurrence detection threshold (first pitch reference value) even when the counterweight 11 is lowered. The control of the rotation speed of the sheave 120 is started.

  The pitching when the counterweight 11 is moving up or down is, for example, due to a change in the speed of the counterweight 11 in the vertical direction. In other words, the pitching of the counterweight 11 in the vertical direction is This is a state in which different vertical movements have occurred. Therefore, the control of the rotation speed of the sheave 120 that cancels the pitching component of the counterweight 11 is such that the vertical movement of the counterweight 11 that is different from the planned vertical movement becomes zero. The movement of the counterweight 11 can be confirmed by, for example, the acceleration of the counterweight 11 with respect to the counterweight 11. Specifically, the acceleration of the counterweight 11 with respect to the counterweight 11 is an acceleration detected by an acceleration sensor 15 attached to the counterweight 11 and moving at the same speed as the counterweight 11.

  In the elevator 1 according to the present embodiment, the control microcomputer 17 determines whether or not the gripping device 16 holds the first guide rail 14 while holding the roll of the counterweight 11 (for example, the X-axis component and the Y-axis component). When both of them are lower than the abnormal vibration occurrence detection threshold value (first pitch reference value), the gripping device 16 releases the first guide rail 14. After the control microcomputer 17 causes the gripper 16 to release the first guide rail 14, the “rolling component of the counterweight 11 (for example, the component in the Y-axis direction)” again becomes the counterweight vibration excessive value (rolling reference). Value), the gripping device 16 again causes the first guide rail 14 to be clamped.

  In the elevator 1 of the present embodiment, the control microcomputer 17 determines that the “vertical swing component (for example, the Z-axis component) of the counterweight 11” detected by the acceleration sensor 15 is a “predetermined abnormal vibration occurrence detection threshold value (the When the control of the rotation speed of the sheave 120 of the hoisting device 12 is started so as to cancel the pitching component exceeding the "one pitch reference value", the control of the rotation speed is performed for a predetermined time (for example, 3 minutes). Thereafter, the control of the rotation speed is terminated. After terminating the control of the rotation speed, the control microcomputer 17 sets the “vertical swing component (for example, the Z-axis component) of the counterweight 11” detected by the acceleration sensor 15 to “predetermined abnormal vibration occurrence detection”. When the threshold value (first pitch reference value) is exceeded, control of the rotation speed of the sheave 120 of the hoisting device 12 to cancel the pitch component is restarted.

  In the elevator 1 described above, when the counterweight 11 swings beyond the counterweight vibration excessive value (rolling reference value) in the lateral direction, the gripping device 16 attached to the counterweight 11 holds the first guide rail 14. Therefore, the collision of the counterweight 11 with the first guide rail 14 is suppressed thereafter. Therefore, damage to the first guide rail 14 due to the counter weight 11 colliding with the first guide rail 14 can be suppressed.

  Moreover, the gripping device 16 holds the first guide rail 14 in a state where the counterweight 11 is stopped, so that the gripper 16 holds the first guide rail 14 in a state where the counterweight 11 is moving up and down. The force by which the brake unit 160 holds the first guide rail 14 can be reduced. As a result, the force applied to the first guide rail 14 is reduced, so that damage to the first guide rail 14 can be suppressed.

  In the elevator 1 according to the present embodiment, when the counterweight 11 swings in the vertical direction beyond the abnormal vibration occurrence detection threshold value (first pitch reference value), the rotation speed of the sheave 120 is controlled to cancel the pitching. Therefore, the vertical swing of the counterweight 11 is suppressed, and the damage of the first guide rail 14 due to the vertical swing of the counterweight 11 can be suppressed. If the counterweight 11 is swaying in the vertical direction without the vertical component of the sway being greater than the abnormal vibration occurrence detection threshold (first sway reference value), the counterweight 11 is driven at normal acceleration. The normal lifting and lowering of the car 10 is not hindered.

  Further, in the elevator 1 of the present embodiment, when the counter weight 11 swings beyond the counter weight vibration excessive value (rolling reference value) in the lateral direction, the car 10 stops at the nearest floor, and for example, stops at the nearest floor. By opening the door of the car 10 and allowing the user to escape from the car 10, the influence on the user due to the swing of the counterweight 11 can be suppressed.

  Further, in the elevator 1 according to the present embodiment, the acceleration sensor 15 is attached to a lower portion of the counterweight 11 whose horizontal swing is larger than that of the upper portion of the counterweight 11, for example. Can be detected reliably. Thereby, the control microcomputer 17 can reliably prevent the first guide rail 14 from being damaged.

  In addition, the elevator of the present invention is not limited to the above embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, and a part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Further, a part of the configuration of an embodiment can be deleted.

  For example, when the “pitch component of the counterweight 11 (for example, the component in the Z-axis direction)” exceeds a “predetermined abnormal vibration occurrence detection threshold value (first pitch reference value)”, the control microcomputer 17 always sets the acceleration The rotation speed of the sheave 120 may be controlled so as to cancel the pitching component of the swing detected by the sensor 15. Specifically, the control microcomputer 17 determines that the “pitch component (for example, Z-axis component) of the counterweight 11” detected by the acceleration sensor 15 is “a predetermined abnormal vibration occurrence detection threshold value (first pitch reference value)”. When the control of the rotational speed of the sheave 120 of the hoisting device 12 is started so as to cancel the pitching component beyond the "", the "pitching component of the counterweight 11 (for example, the component in the Z-axis direction)" becomes "a predetermined abnormality." As long as the vibration generation detection threshold value (first pitch reference value) is exceeded, the rotation speed of the sheave 120 of the hoisting device 12 may be controlled so as to cancel the pitch component.

  The control microcomputer 17 also controls the sheave 120 so as to cancel the pitching component of the shaking detected by the acceleration sensor 15 when shaking occurs due to the warpage between the first guide rail 14 and a guide shoe (not shown). The control of the rotation speed may be started. Also in these cases, since the control microcomputer 17 controls the rotation speed of the sheave 120 so as to cancel the pitch, the damage to the first guide rail 14 due to the pitch of the counterweight can be suppressed.

  The control microcomputer 17 determines that “the roll component of the counterweight 11 (for example, both the X-axis direction component and the Y-axis direction component)” is the counterweight vibration in a state where the gripping device 16 holds the first guide rail 14. When the value falls below an excessive value (rolling reference value), the gripper 16 may release the first guide rail 14.

  The control microcomputer 17 may cause the gripping device 16 to release the first guide rail 14 when a predetermined time has elapsed while the gripping device 16 is holding the first guide rail 14.

  Further, after releasing the first guide rail 14 by the gripping device 16, the control microcomputer 17 causes the “rolling component of the counterweight 11 (for example, both the X-axis component and the Y-axis component)” to abnormally vibrate. When the occurrence detection threshold is exceeded, the first guide rail 14 may be held by the gripping device 16.

  The control microcomputer 17 determines that the “rolling component (for example, one of the X-axis direction component and the Y-axis direction component) of the counterweight 11” detected by the acceleration sensor 15 during the raising and lowering of the car 10 is an excessive counterweight vibration value. Not only in the case of exceeding the (rolling reference value), but also in the case where the pitching component (for example, the component in the Z-axis direction) of the counterweight 11 exceeds the counterweight vibration excessive value (rolling reference value). May be stopped at the nearest floor. In other words, when the roll component of the swing detected by the acceleration sensor 15 exceeds the predetermined roll reference value, and when the pitch component exceeds the predetermined second pitch reference value, In at least one of the cases, the car 10 may be stopped at the nearest floor. Note that the first pitch reference value and the second pitch reference value may be different or may be the same.

  The acceleration sensor 15 may be arranged below the counterweight 11 (the lower part of the hoistway 19 in the vertical direction (Z-axis direction)). Further, instead of the acceleration sensor 15, a swing of the counterweight 11 may be detected by a swing detection sensor such as a mutation sensor or a speed sensor.

  The acceleration sensor 15 may be provided on the car 10 in addition to the counterweight 11. In this case, the control microcomputer 17 may control the rotation speed of the sheave 120 in consideration of both the swing of the counterweight 11 and the swing of the car 10. Specifically, the control microcomputer 17 may control the rotation speed of the sheave 120 so as to suppress the pitching of the car 10 while suppressing the pitching of the counterweight 11. Thereby, the swing of the car 10 can be suppressed while the damage to the first guide rail 14 by the counterweight 11 is suppressed.

  Note that the pitching when the car 10 is moving up or down is, for example, a state in which acceleration is generated in the vertical direction of the car 10. Therefore, the control of the rotation speed of the sheave 120 that cancels the pitching component of the car 10 is such that the vertical movement of the car 10 that is different from the expected vertical movement becomes zero.

  The gripping device 16 may be arranged above the counterweight 11 (upper part of the hoistway 19 in the vertical direction (Z-axis direction)), or both above and below the counterweight 11. Further, one or three or more gripping devices 16 may be attached to the counterweight 11.

  The brake unit 160 may be a hydraulic, pneumatic, or mechanical brake. Further, the fixing portion 162 may be fixed to the frame 111 and always fixed to the shaft portion 161.

  DESCRIPTION OF SYMBOLS 1 ... elevator, 10 ... car, 11 ... counterweight, 110 ... weight, 111 ... frame, 12 ... hoisting device, 120 ... sheave, 13 ... rope, 14 ... first guide rail (guide rail), 140 ... body part, 141: Projection, 15: Acceleration sensor (shake detection sensor), 16: Gripping device, 160: Brake, 161: Shaft, 162: Fixed, 163: Pad, 164: Cylinder, 17: Control microcomputer ( Control unit), 18: second guide rail, 19: hoistway, 20: landing

Claims (3)

The basket,
Counter weight,
A rope connecting the basket and the counterweight,
A hoisting device that has a sheave around which the rope is wound, and that raises and lowers the car and the counterweight by rotating the sheave,
A guide rail that extends vertically and guides the counterweight,
A swing detection sensor attached to the counter weight,
A gripping device attached to the counterweight and capable of holding the guide rail;
A control unit that can control the hoisting device and the gripping device,
The control unit controls the rotational speed of the sheave so as to cancel a pitch component of the shaking detected by the shaking detection sensor, and a roll component of the shaking detected by the shaking detection sensor is a predetermined horizontal component. An elevator, wherein, when a swing reference value is exceeded, the guide rail is held by the gripping device in a state where the car is stopped. Wherein, the pitch component starts controlling the rotational speed of the sheave so as to cancel the pitch component exceeds a first pitch reference value of a predetermined elevator according to claim 1. The control unit is configured such that when the roll component of the shake detected by the shake detection sensor exceeds a predetermined roll reference value, and at least when the pitch component exceeds a predetermined second pitch reference value. 3. The elevator according to claim 1, wherein the car is stopped at a nearest floor.