JP6633208B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator device.

  In a rope-type elevator, the car and the counterweight are connected in a fishing bottle shape with a main rope via a hoisting machine installed in the machine room at the top of the hoistway or at the top of the hoistway. , The basket moves up and down. The hoist is provided with a brake, and when an abnormal condition such as an abnormal acceleration of the elevator is detected, the hoist machine brake is activated and the car can be safely stopped.

  In addition to this, as a safety device in the event that the car is accelerated downward without the brake of the hoisting machine acting due to the main rope breaking or slippage between the hoisting machine and the main rope, etc. An emergency stop device is provided on the car to hold the guide rail and decelerate the car.

  In order to drive this emergency stop, a speed governor rope is installed in a hoistway in a loop by two pulleys in parallel with the main rope, and is connected to the cage via the emergency stop. Then, it moves up and down in conjunction with the basket. The pulley at the upper end of the governor rope is a governor, and the governor has a mechanism that restricts the movement of the governor rope when it rotates at an abnormal speed. , A difference is generated between the governor rope and the car displacement, and the emergency stop device is operated by the difference to decelerate the car.

  Here, a buffer is provided in the pit at the lower end of the hoistway to reduce the speed of the car if the deceleration cannot be performed by the emergency stop.However, the normal governor depends on the position of the car. However, since the operation is performed by detecting a constant speed, the assumed collision speed of the shock absorber increases according to the rated speed, the shock absorber becomes large, and the pit on the hoistway becomes long.

  To cope with this problem, use the fact that the inertia force of the governor rope itself increases in proportion to the acceleration of the car, and operate the emergency stop regardless of the car speed when the car falls freely There is an emergency stop device. By using this device, if the car falls due to a rope break when the car is near the lowest floor, the safety gear operates before the rated speed is reached, so the assumed collision speed of the shock absorber should be reduced. It is thought that the size of the shock absorber can be reduced and the pit can be shortened.

  As a method of operating the emergency stop irrespective of the car speed when the main rope breaks near the lowest floor, there is an emergency stop that operates using the inertia force of the governor (see Patent Document 1).

  The emergency stop operated using the rotational inertia of the governor has a problem in that the inertia force fluctuates due to vibration of the governor rope. In particular, in an elevator having a large ascending / descending stroke, this effect becomes remarkable, and there are conditions where it is difficult to shorten the shock absorber.

  As another method, there is a method using a structure (slack type) in which a break of a main rope is detected not by a fall of a car but by a change in tension at a connection portion of a car and a main rope to operate an emergency stop (see Patent Document 2). ).

JP 2012-162374 A JP-A-11-209022

  The method of detecting the drop in the tension of the main rope and operating the emergency stop has been applied to elevators with a short hoistway, but when used in combination with a speed governor system, the speed is controlled when the emergency stop is pulled up due to the drop in tension. There was a problem that the inertia force of the mechanical system became a pulling resistance and the time required for the emergency stop to operate became longer.

  The present invention has been made in view of the above, and it is possible to suppress an increase in the time until the emergency stop operates while having two types of biasing mechanisms for driving the brakes of the emergency stop. It is an object to provide an elevator device.

  In order to achieve the above-mentioned object, the elevator apparatus of the present invention has a wedge-shaped brake element for gripping a guide rail on an elevating body, and a governor rope is installed in a hoistway in parallel with a suspension body of the elevating body. A first urging section for urging the brake element upward by gripping the governor rope in the governor when the elevating body is abnormally accelerated, and an elevating body when the suspension is broken. A second urging unit for urging the brake element upward by using a motion generated by the fall, wherein at least one of the first and second urging elements is separated from the brake element are doing.

  According to the present invention, the two types of biasing mechanisms for driving the brakes of the emergency stop work independently, so that the brakes are driven by either the biasing operation by the governor or the biasing operation by the tension detection. At the time of lifting, the other urging mechanism is separated from the brake, and does not act as a resistance. Therefore, it is possible to suppress an increase in time from the occurrence of a rope break to the actuation of the emergency stop.

1 is an overall view of an elevator device according to Embodiment 1. FIG. It is an enlarged view of the car during normal driving. It is an enlarged view of a car at the time of a governor operation. It is an enlarged view of a car when a rope is broken. FIG. 3 is an enlarged view of a car part in the case of a 2: 1 roping configuration in the first embodiment. FIG. 4 is an enlarged view of a car part in the case of a rising-type roping according to the first embodiment. FIG. 10 is an enlarged view of a brake element receiving portion according to the second embodiment. FIG. 10 is an enlarged view of a brake element receiving portion according to the second embodiment. It is an enlarged view of the urging part receiving part of the structure which displaces the block of a car side groove part by compression in Embodiment 2. It is an enlarged view of the urging part receiving part of the structure which displaces the block of a car side groove part by compression in Embodiment 2. FIG. 13 is an enlarged view of an urging portion receiving portion having a biting mechanism according to a third embodiment. FIG. 13 is an enlarged view of an urging portion receiving portion having a biting mechanism according to a third embodiment. FIG. 15 is an enlarged view of a car section illustrating an operation of an operation restricting section according to the fourth embodiment. FIG. 15 is an enlarged view of a car section illustrating an operation of an operation restricting section according to the fourth embodiment. FIG. 15 is an enlarged view of a car section illustrating an operation of an operation restricting section according to the fourth embodiment. It is a cage part enlarged view in Embodiment 5. It is a cage part enlarged view in Embodiment 6. It is a cage part enlarged view in Embodiment 7. It is a cage part enlarged view in the modification of Embodiment 7. It is a cage part enlarged view in Embodiment 8. FIG. 19 is a configuration diagram of an elevator according to a ninth embodiment. FIG. 19 is a configuration diagram of an elevator according to a ninth embodiment. FIG. 25 is a diagram illustrating an operation in the case where a car falls freely in Embodiment 9; FIG. 21 is a diagram illustrating an operation when the governor in the ninth embodiment detects an abnormal speed. FIG. 19 is a configuration diagram of an elevator according to a ninth embodiment. FIG. 21 is a configuration diagram of an elevator according to a tenth embodiment. FIG. 21 is a diagram illustrating an operation in the case where a car falls freely in Embodiment 10. FIG. 21 is a diagram illustrating an operation when the governor in the tenth embodiment detects an abnormal speed. FIG. 21 is a configuration diagram of an elevator according to a tenth embodiment. FIG. 21 is a configuration diagram of an elevator according to an eleventh embodiment. FIG. 35 is a diagram illustrating an operation when the governor in the eleventh embodiment detects an abnormal speed.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a machine room 2 is provided above a hoistway 1. In the machine room 2, a hoist 3 and a deflector 4 are installed. The hoist 3 has a drive sheave, a hoist motor for rotating the drive sheave, and a hoist brake (electromagnetic brake) for braking the rotation of the drive sheave.

  The hoisting machine brake includes a brake wheel (drum or disk) coupled coaxially with the drive sheave, a brake shoe that is brought into contact with and separated from the brake wheel, a brake spring that presses the brake shoe against the brake wheel to apply a braking force, and a brake. And an electromagnetic magnet for releasing the brake force by releasing the brake shoe from the brake vehicle against the spring.

  A suspension 6 is wound around the hoisting machine 3 and the deflector wheel 4. A plurality of ropes or a plurality of belts are used as the suspension 6. A car 7 as an elevating body is connected to a first end of the suspension body 6. A counterweight 8 as an elevating body is connected to the second end of the suspension body 6.

  The car 7 and the counterweight 8 are suspended in the hoistway 1 by the suspension body 6, and are raised and lowered in the hoistway 1 by the hoisting machine 3. The control device 5 raises and lowers the car 7 at a set speed by controlling the rotation of the hoisting machine 3.

  In the hoistway 1, a pair of car guide rails 9 for guiding the elevator of the car 7 and a pair of counterweight guide rails 10 for guiding the lifting of the counterweight 8 are provided. At the bottom of the hoistway 1, a car buffer 11 for buffering the collision of the car 7 with the bottom of the hoistway, and a counterweight buffer 12 for buffering the collision of the counterweight 8 with the bottom of the hoistway are provided. ing.

  The car 7 is provided with an emergency stop device 13 that engages with the car guide rail 9 to stop the car 7 in an emergency. As the emergency stop device 13, a progressive-type emergency stop device is used (generally, a lift-type emergency stop device is used in an elevator device whose rated speed exceeds 45 m / min).

  Further, the car 7 is provided with a tension detecting mechanism 15 using an elastic body that changes according to the tension between the suspension body 6 and the car 7.

  The machine room 2 is provided with a governor that detects the overspeed running of the car 7. The governor has a governor sheave 16a, an overspeed detection switch, a rope catch, and the like. A governor rope 17 is wound around the governor sheave 16a.

  The governor rope 17 is annularly laid in the hoistway 1 and connected to the car 7. Further, the speed governor rope 17 is wound around a tension pulley 18 disposed below the hoistway 1. When the car 7 is moved up and down, the governor rope 17 is circulated, and the governor sheave 16a of the governor 16 is rotated at a rotation speed corresponding to the traveling speed of the car 7.

  The governor mechanically detects that the traveling speed of the car 7 has reached an overspeed. As the overspeed to be detected, a first overspeed Vos higher than the rated speed Vo and a second overspeed Vtr higher than the first overspeed are set.

When the traveling speed of the car 7 reaches the first overspeed Vos, the overspeed detection switch is operated.
When the overspeed detection switch is operated, the power supply to the hoist 3 is cut off, and the car 7 is suddenly stopped by the hoist brake.

  When the descending speed of the car 7 reaches the second overspeed Vtr, the governor rope 17 is gripped by the rope catch, and the circulation of the governor rope 17 is stopped.

FIG. 2 shows an enlarged view of the car 7 during normal traveling. FIG. 3 is an enlarged view of the car 7 during operation of the governor. FIG. 3 and FIG. 4, which will be described later, are also views showing the operation of the emergency stop mechanism when the first urging unit or the second urging unit operates. The emergency stop 13 includes a wedge-shaped brake element 19 and a guide 20, and when the brake element is displaced upward, the emergency stop 13 is pushed into the guide rail side by the guide and grips the rail. Further, the brake 19 is fixed to a link 21 that rotates about an axis provided inside the car, and the rotation of the link 21 and the vertical displacement of the brake are linked.
This link is provided with a vibration suppressing spring 22 having a low spring constant between the car 9 and the car 9 so as to suppress the upward displacement of the brake, thereby suppressing the vibration of the brake due to the car vibration. . An urging portion receiving portion 23 is provided below the brake element so that the urging portion comes into contact with the urging portion.

  The first urging portion 24 is fixed to the governor rope 17 and is connected to the governor rope 17 via a malfunction prevention spring 25. The malfunction preventing spring 25 has a higher spring constant than the vibration suppressing spring 22 in the emergency stop, biases the first biasing portion 24 in advance downward, is rope-catched by the speed governor, and controls the speed. Except when the machine rope circulation is stopped, the speed governor rope 17 and the car 7 are held so as to move up and down integrally.

  At the connection between the suspension 6 and the car 7, a tension detecting mechanism 15 is provided, which is directly connected to the terminal end of the suspension 6 and can be displaced up and down. 26 is provided, and the spring fixing plate 26 is fixed to the car via an elastic body 27. Under the action of the elastic body, the spring fixing plate 26 is displaced upward as the tension of the suspension body increases.

  A tension detecting link 28 is provided on the side of the spring fixing plate 26 so as to be in contact with the spring fixing plate, and is configured to be rotatable around a fixing point on the car. A second urging portion 29 is provided on the tension detection link 28 on the side opposite to the side connected to the spring fixing plate 26, and when the suspension body 6 is broken, the spring fixing plate is displaced downward by the action of the elastic body. Then, the second urging portion 29 is displaced upward.

  The first urging portion 24 and the second urging portion 29 are arranged in parallel at a position where the first urging portion 24 and the second urging portion 29 are in contact with the urging portion receiving portion 23 below the brake element, and are both in a contact state in a normal state.

  When any of the urging portions is displaced upward, the displaced urging portion and the brake element are linked, and the emergency stop operates. However, the other urging portion moves apart from the braker because no force is applied from the braker.

  As a result, when the speed governor detects an abnormal car speed and the rope is gripped, the first urging portion 24 is displaced upward as shown in FIG. 3 and the emergency stop operates. At this time, the inertia force of the second urging unit 29 does not become a resistance to the operation of the second urging unit 29 irrespective of the lifting operation of the emergency stop.

  On the other hand, when the rope is broken and the spring fixing plate 26 of the tension detecting mechanism 15 is displaced downward, the second urging portion 29 is displaced upward as shown in FIG. Also in this case, it is possible to prevent the inertial force of the first urging portion 24 and the governor rope 17 from hindering the operation.

  Note that the urging portion receiving portion 23 that can come into contact with the first urging portion 24 and the second urging portion 29 is not provided below the brake element 19, but is brought into contact with the link 21 that is interlocked with the brake element. The vibration suppressing spring 22 for suppressing the vibration of the brake may be provided so as to be directly connected to the brake 19.

  Further, the spring fixing plate of the tension detecting mechanism 15 may be configured to be displaced in accordance with the total tension of all of the plurality of suspensions 6, or may be configured to be displaced in accordance with a change in tension of a part of the suspension. It can also be. Further, the spring fixing plate 26 may not be configured to operate downward due to a drop in rope tension. For example, a pulley may be provided on a car, and the spring fixing plate 26 may be configured to operate upward due to a drop in rope tension. The second urging portion 29 may be displaced upward.

  Also, as shown in FIG. 5, in a 2: 1 roping elevator, the same effect can be realized by providing the elastic body 27 between the hanging car 30 on the car and the car. Also, as shown in FIG. 6, even in the case of a lift-type elevator in which a main rope is passed under a car, a contact portion 32 to a suspension body 6 between suspension cars 31 under the car is provided, and a spring fixing plate 26 is provided. The same effect can be realized by arranging them in conjunction with each other.

  According to the first embodiment described above, when the mechanism of the emergency stop operation by the governor system and the mechanism of the emergency stop operation by rope breakage detection or acceleration detection are used together, they do not interfere with each other, so that a quick operation can be realized. In addition, since an elastic body is provided between the brake element and the elevating body to maintain the brake element at the initial position during normal running, vibration of the brake element during normal running is suppressed, and malfunction and noise are reduced. At the time of pulling up the brake by the urging portion, the pulling-up operation can be performed smoothly by using a sufficiently small spring force so as not to cause resistance. In addition, since the motion generated by the fall of the car that drives the second urging unit is the motion of the spring fixing plate generated when the suspension body is broken, rope tension detection is used as the second urging unit. As a result, the safety gear operates when the rope breaks.

Embodiment 2 FIG.
Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment except for the parts described below. FIG. 7 is an enlarged view of an urging portion receiving portion having a configuration in which the link distal end is retracted by compression in the second embodiment, and is a diagram illustrating a locked state. FIG. 8 is an enlarged view of an urging portion receiving portion having a configuration in which the link distal end is retracted by compression in the second embodiment, and is a diagram showing an unlocked state.

  In the first embodiment, instead of installing the vibration suppressing spring 22 on the link that is interlocked with the brake, a lock mechanism 33 is provided inside the urging portion receiving portion 23, and the first urging portion 24 and the second When both of the urging portions 29 are at the initial positions, the link's own weight of the lock mechanism 33 causes the leading end 34 of the link to stick out, and the groove 35 on the car to engage. At this time, even if an inertial force is generated in the brake element 19, since the brake element 19 is fixed to the groove 35, the vertical movement of the brake element can be suppressed.

  Here, as shown in FIG. 8, when the first urging portion 24 is displaced upward, at the initial stage of the ascent movement of the urging portion, the link deforms and the tip end 34 of the link is drawn into the car guide rail 9 side. Thus, the state of engagement with the groove 35 on the car is eliminated. Similarly, when the second urging unit 29 is displaced upward, the lock mechanism is released at the beginning of the upward movement of the urging unit.

  As a result, the brake element 19 can be displaced in the vertical direction, and the brake element is further lifted upward by the action of the urging portion, so that the emergency stop operates.

  Also in the case of this mechanism, instead of providing the urging portion receiving portion 23 on the bottom surface of the brake 19, the biasing portion receiving portion 23 may be provided at a lower portion of a link linked to the brake.

  Further, as shown in FIGS. 9 and 10, a configuration in which the block of the car side groove is displaced can be used. 9 and 10 are enlarged views of an urging portion receiving portion having a configuration in which the block of the car-side groove portion is displaced by compression in the second embodiment. FIG. 9 shows a locked state, and FIG. Indicates the status. As shown in FIGS. 9 and 10, the cage-side groove 35 is provided on the block 37 held by the elastic body 36, the groove biting portion 38 does not change, and the link 39 is deformed by the approach of the urging portion. However, if the biting state can be released by utilizing a change in the position between the urging portion and the brake element, such as a configuration in which the block 37 is pushed in and the biting with the groove 35 is released, any link configuration can be used. There may be.

  In the present embodiment, the lock mechanism that fixes the brake element at the initial position suppresses the vibration of the brake element during normal running, reduces malfunction and noise, and locks the brake element when the biasing element is pulled up by the biasing unit. Is provided, a pull-up operation can be performed smoothly.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. The third embodiment is the same as the first or second embodiment except for the parts described below. FIG. 11 is an enlarged view of the urging portion receiving portion 23 according to the third embodiment, and is a diagram showing a state before biting. FIG. 12 is an enlarged view of the urging portion receiving portion 23 according to the third embodiment, and is a diagram illustrating a state in which the governor rope side is pulled up (a state in which the biting mechanism operates).

  In the contact portion between the brake element and the urging portion according to the first embodiment, a groove 41 is provided in the urging portion, and a link 40 is provided so that the urging portion can be freely displaced in an initial state. Once the portion is displaced upward and enters the brake receiver, the link 40 rotates on the brake receiver and engages with the groove 41 of the biasing portion to connect the biasing portion and the brake 19. Has become. After being connected to the brake, the brake is connected so that when the urging portion is displaced downward, the brake is also displaced downward in conjunction therewith.

  In this case, since the other urging portion is not connected to the brake, the other urging portion does not affect the operation of the brake.

  When the emergency stop is operated and the emergency stop is returned to the initial state, the driven element is displaced downward. Can return to position. In the hoistway, it is not possible to specify the position where the safety gear operates, and it may be difficult to access from the vicinity of the safety gear when performing the return work. At this time, if the brake element is connected to the first biasing portion and the governor rope, the brake element returns to the initial position and moves the car up and down by giving a forced displacement to the governor rope. Can be done. The release operation of the connection mechanism (release operation of the biting state) may be performed after moving the car to a position accessible from the surroundings.

  In the case where the coupling mechanism is provided only in the first urging unit 24 on the governor rope side, the governor rope 17 is manually displaced after the car is stopped by the second urging unit 29. The return operation can be performed by performing the operation of connecting with the brake element.

  Further, it may be used in combination with the device shown in the second embodiment, in which the restriction on the operation of the brake element is released by the relative displacement between the brake element 19 and the urging portion.

  In the present embodiment, when the upward movement of the brake element is started at the contact portion between the brake element and the first biasing section or the second biasing section, the biasing element biases the brake element upward. The brake unit is easily returned to the initial position by pulling the speed governor rope and rope tension detection mechanism during the return work after the emergency stop operation because of the mechanism that connects the force unit and the brake. it can.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. The fourth embodiment is the same as any of the first to third embodiments, except for the parts described below. 13 to 15 show configuration diagrams of an elevator according to the fourth embodiment.

  As in the first embodiment, a first urging portion 24 and a second urging portion 29 are provided so as to be in contact with the urging portion receiving portion 23 below the brake element 19, and when either of them is displaced upward. , The brake element 19 is configured to grip the car guide rail 9.

  Here, in the tension detecting mechanism 15, an operation restricting plate 42 for preventing the spring fixing plate 26 from being displaced downward is provided. The motion restricting plate 42 is connected to a motion suppressing link 43 that rotates about a point on the car, and the rotation of the motion suppressing link 43 enables the spring fixing plate 26 to move to a horizontal position that does not restrict the vertical displacement. I have. The other end of the motion suppression link 43 is provided outside the car, and comes into contact with a projection 45 continuously provided below the motion constraint release position 44 near the lowest floor on the hoistway, It is configured to rotate. FIG. 13 shows a state in which the end of the movement suppressing link 43 protruding outside the car is not in contact with the projection 45, and FIG. 14 shows a state in which the end is in contact with the projection 45.

  As shown in FIG. 15, when the car 7 reaches below the operation restriction release position 44, the operation restriction link 43 comes into contact with the protrusion 45, and the operation restriction is released.

  Conversely, when the car 7 travels upward from the lowest floor and is displaced upward from the operation restriction release position 44, the operation suppressing link 43 rotates in the opposite direction due to gravity, and the displacement of the spring fixing plate 26 in the vertical direction is not allowed. It becomes possible.

  By providing this structure, only when the car 7 is in the vicinity of the lowest floor, the emergency stop operates due to a decrease in the tension of the suspension body 6, and malfunction of the emergency stop due to tension detection when the car position is high is suppressed. be able to.

  Further, the operation suppressing link 43 is structured to be held at positions before and after the rotation, and the hoistway-side protrusions are provided only before and after the operation restriction releasing position, and each time the vehicle passes the operation restriction releasing position, the operation suppressing link is moved to the operation restriction position. -It can be configured to switch at the release position.

  When a spring is provided between a suspension car and a car on a car in a 2: 1 roping elevator, the main rope is passed under the car, and the elevator is displaced by tension in contact with the main rope under the car. Even when the structure is provided, a structure in which a spring fixing plate is provided and the operation constraint of the spring fixing plate is released below the operation constraint release position using a link that is displaced by contact with the hoistway side projection. It is possible to Therefore, malfunction is suppressed by operating the rope tension detecting mechanism only at the lower part of the hoistway. In addition, the lower part of the hoistway on which the rope tension detecting mechanism can operate can be limited to a position below the deceleration start position from the rated speed.

Embodiment 5 FIG.
Next, a fifth embodiment of the present invention will be described. The fifth embodiment is the same as any of the first to fourth embodiments, except for the parts described below. FIG. 16 is an enlarged view of a car part according to the fifth embodiment.

  As shown in FIG. 16, in addition to the suspension body 6 and the governor rope 17, in an elevator having a long hoistway, the elevator is installed at the lower end of the hoistway in order to suppress imbalance between the loads on both sides of the hoist. A balancing rope 46 may be installed via a balancing wheel 47 so as to connect the car 7 and the lower part of the balancing weight 8. When the car position is on the top floor, the portion on the car side is longer when the car position is on the top floor, so the load on the car side increases, and when the car is on the lowest floor, The part becomes longer and the load on the car side becomes smaller.

  For this reason, the tension applied to the hanging position 48 on the car side changes according to the car position. Instead of providing the hoistway-side projections in the fourth embodiment, a pulley is provided on the car by using the tension between the balancing rope 46 and the car 7, and the balancing rope connecting portion 49 is provided in the tension detecting mechanism 15. By providing the elastic body 50 between the balancing rope connecting portion 49 and the car and operating the operation restricting plate 42 of the spring fixing plate 26, when the car is below the operation restriction releasing position 44, The operation restriction can be released. Therefore, the operation is suppressed when the car position is high and the tension of the balancing rope is high, and the malfunction is suppressed by operating the rope tension detecting mechanism only at the lower part of the hoistway. In addition, since the operation is switched using the tension of the balancing rope, the emergency stop for detecting a drop in the rope tension can be operated only on the lowest floor without providing an additional mechanism on the hoistway side.

  In this mechanism, since it is not necessary to provide a projection on the hoistway side, it is easy to introduce the mechanism into an existing elevator.

  In some cases, instead of a balancing rope, unbalance is suppressed by a chain that does not have a balancing wheel.However, in this case, it is also possible to design the same way. Even if a control cable installed in a U-shape is used in place of a balancing rope, the tension similarly changes according to the position of the car, so that it can be used as an operation restriction mechanism of the spring fixing plate 26. it can.

Embodiment 6 FIG.
Next, a sixth embodiment of the present invention will be described. The sixth embodiment is the same as any of the first to fifth embodiments, except for the parts described below. FIG. 17 shows a configuration diagram of an elevator according to the sixth embodiment.

  As in the first to fifth embodiments, when the brake element 19 is lifted upward, it is pressed against the car guide rail 9 by the action of the guide 20, and the car is decelerated by friction between the car guide rail 9 and the car. Although not shown in FIG. 17, as in the first to fifth embodiments, the brake element 19 is installed on a link 21 that rotates about a point on the car, and the braking element 19 A vibration suppressing spring 22 is provided between the car and the link in order to prevent the vertical movement of the vehicle.

  In addition, when the governor rope 17 is installed in parallel with the car and the governor 16 detects an abnormal speed, the governor rope 17 is gripped and the first biasing unit 24 is biased upward.

  The second urging unit 29 is connected to the acceleration detection unit 51. The acceleration detecting unit includes the weight 52 and the elastic body 53. In a normal state, the elastic body 53 is compressed by gravity applied to the weight 52. The second urging portion 29 is directly connected to the weight 52 and is vertically displaced in conjunction with the vertical displacement of the weight 52. When the car 7 falls freely due to the breakage of the suspension body 6, the weight 52 is relatively displaced upward as viewed from the car 7 by the inertial force of the weight 52. By this operation, the second urging unit 29 urges the brake element 19 upward.

  The first urging portion 24 and the second urging portion 29 are arranged in parallel so as to be in contact with the urging portion receiving portion 23 below the brake element, and are arranged so as to be in contact in a normal state.

  When the rope is gripped by the governor 16 and the first urging unit 24 is displaced upward, the first urging unit and the brake 19 are interlocked, and the emergency stop operates. At this time, since the second urging portion 29 is separated from the urging portion receiving portion 23, the second urging portion 29 does not affect the pulling operation of the brake 19. Conversely, when the acceleration of the car is detected and the second urging unit 29 is displaced upward, the governor rope connected to the first urging unit 24 and the first urging unit is used. The inertia force 17 does not affect the pulling of the brake 19.

  For this reason, the urging unit only needs to urge the weight of the brake element 19 and the force against the vibration suppressing spring 22 provided on the link 21 interlocked with the brake element. The obstruction can be avoided.

  In the present embodiment, by using the vibration of the spring holding weight as the second urging portion, the inertia of the governor does not become a resistance when the emergency stop operates in accordance with the car acceleration.

  As in the second embodiment, a mechanism for fixing the brake element 19 to the car in the urging section receiving section 23 and a mechanism for releasing the fixing of the brake element 19 by the displacement of the urging section are combined. It may be used, or a structure in which the brake element and the urging section are connected when the urging section is pushing up the brake element as in the third embodiment may be added.

Embodiment 7 FIG.
Next, a seventh embodiment of the present invention will be described. The seventh embodiment is the same as any of the first to sixth embodiments, except for the parts described below. FIG. 18 shows a configuration diagram of an elevator according to the seventh embodiment.

  As in the sixth embodiment, a first urging portion 24 and a second urging portion 29 are provided so as to be in contact with the urging portion receiving portion 23 below the brake element 19, and when either of them is displaced upward. , The brake element 19 is configured to grip the car guide rail 9.

  A weight displacement suppressing plate 54 is provided at a position that suppresses upward displacement of the weight 52 from the initial position. The weight displacement suppressing plate 54 can be displaced in the horizontal direction by the operation suppressing link 43. The other is disposed so as to be in contact with a projection 45 provided on the hoistway on the outside of the car. The protrusion 45 is provided continuously below the operation constraint release position 44 provided near the lowest floor stop position, and the car 7 travels down from the top floor and moves below the operation restriction release position 44. Then, the operation suppressing link 43 rotates, and the weight displacement suppressing plate 54 moves to a position where the upward displacement of the weight 52 is not restricted.

  Conversely, when the car rises from the lowest floor stop position and moves above the operation constraint release position 44, the car rotates by the weight of the operation suppression link 43, and the weight displacement suppression plate 54 Move to a position that limits upward displacement.

  By this effect, the first overspeed and the second overspeed can be detected by the governor 16 connected to the first urging unit, and the car can be decelerated except for the vicinity of the lowest floor, In the vicinity of the floor, after the car 7 starts to fall and before the car is accelerated to the first overspeed, the acceleration is detected by the vibration of the weight 52, and the emergency stop is operated by the second urging portion 29, so that the buffer is cushioned. The speed of collision with the vessel can be reduced. In this example, the probability of a malfunction is reduced by limiting the operation to the vicinity of the lowest floor by the weight vibration type. In addition, the operation range is switched in the vicinity of the lowest floor by using the hoistway projection, thereby limiting the operation range of the spring holding weight type emergency stop.

  Note that, as shown in FIG. 19, similar to the fifth embodiment, the same effect can be obtained even with a structure in which the weight displacement suppressing plate 54 is moved using the tension of the balancing rope or the control cable. . In this case, since the operation is switched on the lowest floor using the tension of the balancing rope and the control cable, the operation range of the spring holding weight type emergency stop can be limited without providing additional equipment on the hoistway side. .

Embodiment 8 FIG.
Next, an eighth embodiment of the present invention will be described. The eighth embodiment is the same as the first to seventh embodiments, except for the parts described below. FIG. 20 shows a configuration diagram of an elevator according to the eighth embodiment.

  As in the first to fifth embodiments, when the brake element 19 is lifted upward, it is pressed against the car guide rail 9 by the action of the guide 20, and the car is decelerated by friction between the car guide rail 9 and the car. Although not shown in FIG. 20, as in the first to fifth embodiments, the brake element 19 is installed on a link 21 that rotates about a point on the car, and the brake element 19 A vibration suppressing spring 22 is provided between the car and the link in order to prevent the vertical movement of the vehicle.

  The first urging portion 24 and the second urging portion 29 are arranged in parallel so as to be in contact with the urging portion receiving portion 23 below the brake element, and are arranged so as to be in contact in a normal state.

  In addition, when the governor rope 17 is installed in parallel with the car and the governor 16 detects an abnormal speed, the governor rope 17 is gripped and the first biasing unit 24 is biased upward.

  The second urging section 29 is connected to the actuator 55. In the normal state, the actuator 55 is fixed at a position where the brake element 19 at the initial position and the second urging portion 29 are in contact with each other, and the acceleration of the car is calculated by an acceleration sensor 56 provided on the car. When the acceleration is detected, a signal is issued to the actuator 55. When the actuator 55 receives the signal, the actuator 55 drives the second urging portion 29 to be displaced upward.

  When the rope is gripped by the governor 16 and the first urging unit 24 is displaced upward, the first urging unit and the brake 19 are interlocked, the emergency stop operates, and the second urging unit 29 Since it is separated from the urging portion receiving portion 23, it does not affect the pulling operation of the brake 19. Conversely, when the actuator 55 is driven by the signal from the control device 5 and the second urging unit 29 is displaced upward, the actuator 55 is connected to the first urging unit 24 and the first urging unit. The inertia force of the governor rope 17 does not affect the pulling of the brake 19.

  For this reason, the urging unit only needs to urge the weight of the brake element 19 and the force against the vibration suppressing spring 22 provided on the link 21 interlocked with the brake element. The obstruction can be avoided. By using an actuator driven by an accelerometer as the second urging unit, it is possible to use a configuration in which both an actuator type and a governor system are used.

  In addition, the signal for driving the actuator is calculated by calculating the acceleration from the speed or displacement information of the car 7 acquired from the controller 5 in addition to the accelerometer on the car, or by using a laser sensor or an ultrasonic sensor on the car on the shaft. How to calculate the acceleration from the absolute position information of the car obtained by measuring the distance from the fixed point of the car, or obtain the rotation of the roller that rotates by contacting the guide rail on the car The acceleration may be calculated using a simple sensor.

  Further, as in the fourth and fifth embodiments, a plate for suppressing the upward displacement of the actuator is provided to utilize the contact with the protrusion on the hoistway and the tension fluctuation of the balancing rope and the control cable. Therefore, if the operation restriction of the actuator is released by a mechanical mechanism only when the car is below the operation restriction release position, the possibility that the safety gear will malfunction due to an error in the sensor information is greatly reduced. Can be reduced.

Embodiment 9 FIG.
Next, a ninth embodiment of the present invention will be described with reference to FIGS. FIGS. 21 to 24 are diagrams illustrating a configuration of an elevator according to the ninth embodiment. FIG. 22 shows the positional relationship between the urging portion and the brake element 19 in a normal state, and FIG. 21 omits the brake element 19, the car guide rail 9, and the speed governor rope 17 from FIG. FIG.

  One end of the first urging portion 24 is fixed to the governor rope 17 via a connecting portion 71, and the other end is rotatably supported by the guide 20 via a connecting portion 60. On the other hand, the second urging unit 29 is provided below the first urging unit 24. One end of the second urging portion 29 is rotatably supported by a connecting rod 66 via a connecting portion 65, and the other end is rotatably supported by the guide 20 via a connecting portion 63. I have.

  The connecting rod 66 is supported by guides 61a and 61b provided on the first urging portion 24 so as not to move in the horizontal direction. A U-shaped support mechanism 67 is formed at the upper end of the connecting rod 66. A roller 68 is arranged inside the support mechanism 67, and the roller 68 is movable in the horizontal direction. The roller 68 is connected to the elastic body 53, and the upper end of the elastic body 53 is connected to the weight 52. The elastic body 53 is compressed by the gravity of the weight 52, and the weight 52 is supported by a support plate 69 fixed to the guide 20. The support plate 69 has a hole 70 through which the elastic body 53 can pass.

  The wedge-shaped brake element 19 is rotatably supported by the second urging section 29 via the connecting section 72, and the brake element 19 can move up and down along the inclined surface of the guide 20. Has become.

  Next, the behavior when the car 7 falls freely due to the breakage of the suspension body 6 will be described with reference to FIG. When the car 7 falls freely, the weight 52 rises by inertia, and the compression force of the elastic body 53 that has been compressed by the weight of the weight 52 is released.

  The second biasing portion 29 is normally receiving the compressive force of the elastic body 53 via the connecting rod 66. When the compression force of the elastic body 53 is released by the free fall of the car 7, the second urging portion 29 is lifted by the elastic body 64. Then, the second biasing portion 29 rotates upward with the connecting portion 63 as a fulcrum, and the brake element 19 whose lower end is connected to the connecting portion 72 moves upward. When the brake element 19 moves upward along the guide 20, the brake element 19 and the car guide rail 9 come into contact with each other to generate a frictional force, thereby braking the free fall of the car 7.

  In this series of operations, the first urging portion 24 does not affect the operation of the brake 19. Also, the governor rope 17 does not affect the operation of the brake 19. Therefore, independently of the first urging unit 24, the second urging unit 29 is operated, and when the suspension body 6 is broken, the brake 19 is immediately operated to brake the free fall of the car 7. can do.

  Next, the operation when the governor 16 detects the abnormal speed of the car 7 will be described with reference to FIGS. As shown in FIG. 22, in a normal state, the weight 52 is kept in contact with the support plate 69 by its own weight, and the elastic body 53 is compressed.

  When the governor 16 detects that the moving speed of the car 7 is abnormal, the governor rope 17 is gripped by the governor 16 and the movement of the governor rope 17 stops. Then, a relative speed change occurs in the vertical direction between the connecting portion 60 and the connecting portion 71, and the first urging portion 24 moves upward with the connecting portion 60 as a fulcrum, as shown in FIG. Rotate and move.

  When the first urging portion 24 rotates upward, the positions of the guides 61 a and 61 b that restrict the horizontal movement of the connecting rod 66 move in a direction away from the guide 20. Then, as shown in FIG. 24, the connecting rod 66 receives a horizontal force from the guides 61a and 61b, and is inclined in a direction away from the guide 20.

  When the connecting rod 66 is tilted away from the guide 20, the support mechanism 67 provided at the upper end of the connecting rod 66 also moves away from the guide 20. Then, the rollers 68 supported by the support mechanism 67 fall off the support mechanism 67.

  Although the dropped roller 68 moves downward due to the restoring force of the elastic body 53, the force of the elastic body 53 does not act on the connecting rod 66 because it is separated from the connecting rod 66. Accordingly, the compressive force of the elastic body 53 acting on the second urging portion 29 via the connecting rod 66 is released, and the second urging portion 29 moves upward by the force of the elastic body 64. As a result, the brake element 19 whose lower end is connected to the connecting portion 72 of the second urging portion 29 moves upward and comes into contact with the car guide rail 9 to brake the car 7 moving at an abnormal speed. . As described above, when the abnormal speed of the car 7 is detected, the brake 19 is operated regardless of the operation of the weight 52.

  In the ninth embodiment, the brake 19 is connected to only the second urging portion 29. The second urging portion 29 is lifted by the elastic body 64 and is pushed down by the elastic body 53 via the connecting rod 66. On the other hand, the first biasing portion 24 is biased by the malfunction prevention spring 25 so as not to easily move upward, and the elastic body 53 acting on the connecting rod 66 by the movement of the governor rope 17. The mechanism releases the compression force.

  As described above, in the ninth embodiment, the mechanisms of the first urging unit 24 and the second urging unit 29 are independent. Accordingly, the first urging unit 24 and the second urging unit 29 function independently when the car 7 falls freely and when the moving speed of the car 7 is abnormal, and 19 can be activated.

  As shown in FIG. 25, instead of the guides 61a and 61b provided on the first urging unit 24, magnets 75 and 76 are repelled by the first urging unit 24 and the connecting rod 66, respectively. May be arranged as follows. In this case, the movement of the connecting rod 66 can be controlled by the first urging unit 24 in a non-contact manner. Thus, the effects of mechanical errors, displacements, and the like can be eliminated, and the compression force of the elastic body 53 can be stably released.

Embodiment 10 FIG.
Next, a tenth embodiment will be described with reference to FIGS. In the tenth embodiment, the point that the connecting rod 73 has elasticity and is formed by a rod-shaped member that bends and deforms under a compressive load, and the upper end of the connecting rod 73 is connected via the connecting part 74 This embodiment is different from the ninth embodiment in that it is always connected to the elastic body 53. Other configurations are the same as in the ninth embodiment.

  FIG. 27 shows a case where the car 7 falls freely due to the breakage of the suspension body 6. When the car 7 falls freely, the weight 52 rises due to inertia, and the compressive force of the elastic body 53 that has been compressed by the weight of the weight 52 is released. As a result, the second urging portion 29 is lifted, and the brake 19 acts on the car guide rail 9 to stop the car 7 from falling.

  FIG. 28 shows a case where the governor 16 detects that the moving speed of the car 7 is abnormal. In this case, the movement of the governor rope 17 stops, and the first urging unit 24 rotates upward about the connecting unit 60 fixed to the guide 20 as a fulcrum. Then, the guides 61 a and 61 b of the first urging portion 24 move in a direction away from the guide 20. As a result, the connecting rod 73 receives a horizontal force from the guides 61a and 61b, and causes bending deformation as shown in FIG.

  When bending deformation occurs in the connecting rod 73, the compressive force from the elastic body 53 acting on the connecting rod 73 in the axial direction cannot be supported, and buckling deformation occurs in the connecting rod 73. When the connecting rod 73 buckles and deforms, the compressive force acting on the second urging portion 29 from the elastic body 53 is reduced, and the second urging portion 29 is lifted by the force of the elastic body 64. Then, when the second urging portion 29 is lifted, the brake element 19 is lifted and comes into contact with the car guide rail 9 to brake the movement of the car 7.

  In the tenth embodiment, the first urging unit 24 and the second urging unit 24 are used when the suspension body 6 is broken and when the governor 16 detects that the moving speed of the car 7 is abnormal. The operation of the force part 29 is different. Thus, the brake 19 can be operated according to the content of the abnormality. In the ninth embodiment, the connecting rod 66 and the elastic body 53 are separated from each other, whereas in the tenth embodiment, the connecting rod 73 and the elastic body 53 are always connected. Thus, it is possible to return to the normal state only by removing the brake element 19 from the car guide rail 9, and it is possible to shorten the time required to return from the emergency stop state.

  As shown in FIG. 29, instead of the guides 61a and 61b provided on the first urging unit 24, magnets 75 and 76 are repelled by the first urging unit 24 and the connecting rod 73, respectively. It may be arranged as follows. In this case, the movement of the connecting rod 73 can be controlled by the first urging unit 24 in a non-contact manner. Thus, the effects of mechanical errors, displacements, and the like can be eliminated, and the compression force of the elastic body 53 can be stably released.

Embodiment 11 FIG.
Next, an eleventh embodiment will be described with reference to FIGS. FIG. 30 shows the positional relationship between the urging portion and the brake in a normal state.
The eleventh embodiment is different from the ninth embodiment in that the connection mechanism between the roller 68 and the weight 52 and the brake 19 and the first urging portion 24 are connected. Other configurations are the same as in the ninth embodiment.

  The connecting rod 66 is supported by guides 61a and 61b provided on the first urging portion 24 so as not to move in the horizontal direction. A U-shaped support mechanism 67 is formed at the upper end of the connecting rod 66. A roller 68 is arranged inside the support mechanism 67, and the roller 68 is movable in the horizontal direction.

  The roller 68 is connected to the weight 52 via a connecting rod 79. The weight 52 is supported by a support plate 69 fixed to the guide 20 via an elastic body 53. The elastic body 53 is compressed by the gravity of the weight 52. The support plate 69 has a hole 70 through which the connecting rod 79 can pass.

  The wedge-shaped brake element 19 is rotatably supported by the second urging section 29 by the connecting section 72, and the brake element 19 is movable vertically along the inclined surface of the guide 20. . An elongated hole 77 is formed in the brake element 19, and a pin 78 fixed to the first urging portion 24 is disposed inside the elongated hole 77.

  Next, a case where the car 7 falls freely due to the breakage of the suspension body 6 will be described. When the car 7 falls freely, the weight 52 rises due to inertia. Then, the compressive force of the elastic body 53 compressed by the weight of the weight 52 is released.

  Normally, the second urging portion 29 receives the compressive force of the elastic body 53 via the connecting rods 66 and 79. When the compression force of the elastic body 53 is released by the free fall of the car 7, the second urging portion 29 is lifted upward integrally with the weight 52. When the second urging portion 29 is lifted upward about the connecting portion 63 as a rotation axis, the brake element 19 also moves upward via the connecting portion 72. When the brake element 19 moves upward along the guide 20, a braking force is generated by contact with the car guide rail 9, and the free fall of the car 7 is braked.

  The first biasing portion 24 does not affect the operation of the brake 19 in the series of operations. Also, the governor rope 17 does not affect the operation of the brake 19. Therefore, independently of the first urging unit 24, the second urging unit 29 is operated, and when the suspension body 6 is broken, the brake 19 is immediately operated to brake the free fall of the car 7. can do.

  Next, an operation when the governor 16 detects an abnormal speed of the car 7 will be described with reference to FIG. When the governor 16 detects that the moving speed of the car 7 is abnormal, the governor rope 17 is gripped by the governor 16 and the movement of the governor rope 17 stops. Then, a relative speed change occurs in the vertical direction between the connecting portion 60 and the connecting portion 71, and the first urging portion 24 moves upward with the connecting portion 60 as a fulcrum, as shown in FIG. Rotate and move.

  When the first urging portion 24 rotates upward, the positions of the guides 61 a and 61 b that restrict the horizontal movement of the connecting rod 66 move in a direction away from the guide 20. Then, as shown in FIG. 31, the connecting rod 66 receives a horizontal force from the guides 61a and 61b, and tilts in a direction away from the guide 20.

  When the connecting rod 66 is tilted away from the guide 20, the support mechanism 67 provided at the upper end of the connecting rod 66 also moves away from the guide 20. Then, the rollers 68 supported by the support mechanism 67 fall off the support mechanism 67. Since the connecting rod 79 comes off together with the roller 68, the compressive force of the elastic body 53 does not act on the connecting rod 66. By releasing the compressive force of the elastic body 53 via the connecting rod 66, the second urging portion 29 and the brake 19 can be moved.

  When the first urging portion 24 moves upward, the pin 78 comes into contact with the upper end of the elongated hole 77 provided in the brake element 19. As a result, the pin 78 and the first biasing portion 24 are integrated, and the brake 19 is pulled up. Then, the brake 19 contacts the car guide rail 9 and brakes the car 7 moving at an abnormal speed.

  As described above, in the eleventh embodiment, the braking by the brake 19 is applied to the operation of the governor rope 17 which stops upon detecting that the speed of the car 7 is abnormal, regardless of the movement of the weight 52. Can be implemented. In the eleventh embodiment, the elastic body 64 shown in the ninth embodiment is not required, and the configuration can be simplified.

  As described above, the content of the present invention has been specifically described with reference to the preferred embodiments. However, based on the basic technical idea and teaching of the present invention, those skilled in the art can adopt various modifications. It is obvious.

  6 suspension, 7 car (elevator), 9 car guide rail (guide rail), 13 emergency stop device, 15 tension detection mechanism, 16 governor, 17 governor rope, 19 brake, 20 guide, 21 link , 22 Vibration suppression spring (elastic body), 23 urging part receiving part, 24 first urging part, 25 malfunction prevention spring, 26 spring fixing plate, 27 elastic body, 28 tension detection link, 29 second urging Part, 46 balancing rope, 50 elastic body, 52 weight, 53 elastic body, 55 actuator, 56 acceleration sensor.

Claims (13)

It has a wedge-shaped brake that grips the guide rails on the elevating body, and a speed governor rope is installed in the hoistway in parallel with the suspension of the elevating body, so that when the elevating body is abnormally accelerated, A first urging unit that urges the brake element upward by gripping the governor rope in a gearbox;
A second biasing unit that biases the brake element upward by using a motion generated by falling of the elevating body when the suspension body is broken;
A mechanism for suppressing vertical movement of at least one of the brake element and the second urging portion during normal running of the lifting / lowering body;
At least one of the first urging unit and the second urging unit is separated from the brake element ,
When the first urging unit or the second urging unit moves upward, the restraint of the mechanism is released by a link provided in the urging unit receiving unit at an early stage of the raising operation of the brake. characterized in that that,
Elevator equipment. It has a wedge-shaped brake that grips the guide rails on the elevating body, and a speed governor rope is installed in the hoistway in parallel with the suspension of the elevating body, so that when the elevating body is abnormally accelerated, A first urging unit that urges the brake element upward by gripping the governor rope in a gearbox;
A second biasing unit that biases the brake element upward by using a motion generated by falling of the elevating body when the suspension body is broken;
A mechanism for suppressing vertical movement of at least one of the brake element and the second urging portion during normal running of the lifting / lowering body;
At least one of the first urging unit and the second urging unit is separated from the brake element ,
At a contact portion between the brake element and the first urging portion or the second urging portion, when the raising operation of the brake element is started, the brake element is urged upward. Having a mechanism for connecting the urging portion and the brake element ,
Elevator equipment. A connecting portion between the elevating body and the suspension body, a spring holding part that moves up and down according to the displacement of an elastic body provided to be deformed according to the tension generated between the elevating body and the suspension body. And the movement generated by the falling of the elevating body for driving the second biasing part is the movement of the spring holding part generated when the suspension body is broken.
The elevator device according to claim 1 or 2 . On the elevating body, an operation restricting mechanism for restricting the spring holding portion from being displaced in a direction in which the tension of the suspension body is reduced is provided. In some cases, the operation restriction mechanism is released,
The elevator device according to claim 3 . The operation constraint release position is set to a section until the elevating body is decelerated from the rated speed during the descending travel and reaches the lowest floor stop position,
The elevator device according to claim 4 . In some or all sections from the operation constraint release position of the hoistway to the lowest floor stop position of the hoist, a hoistway side protrusion is provided at a plane position that contacts a link installed on the hoist,
When the link on the hoisting body comes into contact with the hoistway-side protrusion, the operation restricting mechanism of the spring holding unit is released.
The elevator device according to claim 4 . Using a balancing rope or a control cable, which is suspended downward from the elevating body, and an elastic body that urges in a direction opposite to a tension applied to a connection portion with the elevating body, the lower part from the operation restriction release position. When there is an elevating body, the operation restriction mechanism of the spring holding unit is released,
The elevator device according to claim 4 . It has a wedge-shaped brake that grips the guide rails on the elevating body, and a speed governor rope is installed in the hoistway in parallel with the suspension of the elevating body, so that when the elevating body is abnormally accelerated, A first urging unit that urges the brake element upward by gripping the governor rope in a gearbox;
A second biasing unit that biases the brake element upward by using a motion generated by falling of the elevating body when the suspension body is broken;
A mechanism for suppressing vertical movement of at least one of the brake element and the second urging portion during normal running of the lifting / lowering body;
At least one of the first urging unit and the second urging unit is separated from the brake element ,
The motion generated by the falling of the lifting / lowering body that drives the second urging unit is performed by storing a weight previously held on the lifting / lowering body via the elastic body movably in the vertical direction via an elastic body. Characterized in that it is a movement that is displaced in the vertical direction according to the acceleration of the elevating body by the elastic energy of the elastic body ,
Elevator equipment. An operation restricting mechanism for restricting the operation of the weight held in the elastic body in the ascending direction is provided, and when the elevating body is located below an operation restriction releasing position provided on an intermediate floor, the operation restricting mechanism is released. Done,
The elevator device according to claim 8 . In some or all sections from the operation constraint release position of the hoistway to the lowest floor stop position of the hoist, a hoistway side protrusion is provided at a plane position that contacts a link installed on the hoist,
When the link on the hoisting body comes into contact with the hoistway-side protrusion, the operation restriction mechanism of the weight is released.
The elevator device according to claim 9 . Using a balancing rope or a control cable, which is suspended downward from the elevating body, and an elastic body that urges in a direction opposite to a tension applied to a connection portion with the elevating body, the lower part from the operation restriction release position. When there is a lifting body, the operation restriction mechanism of the weight is released,
The elevator device according to claim 9 . It has a wedge-shaped brake that grips the guide rails on the elevating body, and a speed governor rope is installed in the hoistway in parallel with the suspension of the elevating body, so that when the elevating body is abnormally accelerated, A first urging unit that urges the brake element upward by gripping the governor rope in a gearbox;
A second biasing unit that biases the brake element upward by using a motion generated by falling of the elevating body when the suspension body is broken;
A mechanism for suppressing vertical movement of at least one of the brake element and the second urging portion during normal running of the lifting / lowering body;
At least one of the first urging unit and the second urging unit is separated from the brake element ,
The weight held on the elevating body is connected to the second urging unit via an elastic body, and the second urging unit connected to the brake is the second urging unit. The first urging unit, which is supported by another elastic body that pushes up the urging unit upward and is separated from the brake element, applies the force of the elastic body connecting the weight to the second urging unit. Characterized by being removed from the biasing part ,
Elevator equipment. It has a wedge-shaped brake that grips the guide rails on the elevating body, and a speed governor rope is installed in the hoistway in parallel with the suspension of the elevating body, so that when the elevating body is abnormally accelerated, A first urging unit that urges the brake element upward by gripping the governor rope in a gearbox;
A second biasing unit that biases the brake element upward by using a motion generated by falling of the elevating body when the suspension body is broken;
A mechanism for suppressing vertical movement of at least one of the brake element and the second urging portion during normal running of the lifting / lowering body;
At least one of the first urging unit and the second urging unit is separated from the brake element ,
A weight supported on the elevating body via an elastic body is connected to the second biasing part and is separated from the second biasing part connected to the brake element, and the brake element. In the first urging unit, the first urging unit removes the force of the elastic body supporting the weight from the second urging unit and pushes up the brake element. Characterized by
Elevator equipment.

Images