Elevator emergency stop device

Abstract

To provide an emergency stop operating device for an elevator capable of reducing the capacity of an actuator.SOLUTION: When the movable guide member 44 is displaced to the operating position, the operating wedge 47 comes into contact with the car guide rail 11 and is displaced upward relative to the movable guide member 44 along the 44a of the guide surface, and the lateral movement frame 42 is horizontally displaced relative to the lifting frame 41. Thus, the car guide rail 11 is sandwiched between the operating wedge 47 and the braking member 48 to compress the plurality of main springs 49, and the pull-up frame body 41 is displaced to the pull-up position.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to an elevator safety actuation device. [Background technology]

[0002] In a conventional elevator stopping device, when a detector detects that the elevator body is falling at an excessive speed, an actuator is driven to pull up a pair of small wedges. This prevents the pair of small wedges from moving relative to the rail. If the elevator body continues to fall from this state, the pair of wedges are pulled up via a pair of connecting parts, and the elevator body stops (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-60291 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional elevator stopping device as described above, it was necessary to increase the capacity of the actuator in order to perform the return operation of the stopping device after stopping the lifting body.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator emergency stop operating device that can reduce the capacity of the actuator. [Means for solving the problem]

[0006] The emergency stop operating device for an elevator according to the present disclosure includes a lifting frame that is displaceable in the vertical direction relative to a lifting body that rises and falls along a guide rail between a non-raised position and a raised position that is higher than the non-raised position, and that displaces from the non-raised position to the raised position; a transmission mechanism that transmits the vertical displacement of the lifting frame relative to the lifting body to the emergency stop device and activates the emergency stop device; a lateral movement frame that is provided on the lifting frame and is displaceable in the horizontal direction relative to the lifting frame between a first horizontal position and a second horizontal position; a return spring that is provided between the lifting frame and the lateral movement frame and generates a force that returns the lateral movement frame to the first horizontal position; a movable guide member that has a guide surface facing the guide rail and is provided on the lateral movement frame and is displaceable in the horizontal direction relative to the lateral movement frame between a normal position and an actuated position; and a movable guide section that is provided between the lateral movement frame and the movable guide member. the actuating wedge is provided between the movable guide member and the guide rail and is displaceable vertically relative to the movable guide member along the guide surface; the lateral movement frame is provided with a braking member facing the guide rail on the opposite side of the guide rail from the movable guide member; and the main spring is provided between the lateral movement frame and the braking member; the guide surface is inclined relative to the guide rail so as to approach the guide rail as it extends upward; when the movable guide member is displaced to the actuating position, the actuating wedge comes into contact with the guide rail and is displaced upward relative to the movable guide member along the guide surface, the lateral movement frame is displaced horizontally relative to the lifting frame, the guide rail is sandwiched between the actuating wedge and the braking member, the main spring is compressed, and the lifting frame is displaced to the lifting position. [Effects of the Invention]

[0007] According to the elevator emergency stop operating device of the present disclosure, the actuator capacity can be reduced. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram showing the configuration of an elevator according to a first embodiment. [Figure 2] FIG. 2 is a front view showing the car of FIG. 1. [Figure 3] 3 is a side view showing a main part of the safety device of FIG. 2. [Figure 4] FIG. 4 is a side view showing an operating state of the safety device of FIG. 3. [Figure 5] FIG. 3 is a front view showing the safety gear operating device of FIG. 2. [Figure 6] 6 is a front view showing a state immediately after the start of operation of the safety gear actuating device of FIG. 5.

[0023] FIG. [Figure 7] 7 is a front view showing a state in which the operating wedge of FIG. 6 is displaced upward relative to the movable guide member. [Figure 8] 8 is a front view showing a state in which the operating wedge of FIG. 7 is further displaced upward relative to the movable guide member. FIG. [Figure 9] FIG. 9 is a front view showing the state of the safety gear operating device when the car has descended from the state shown in FIG. 8. [Figure 10] 3 is a front view showing a state in which the lifting rod of FIG. 2 is lifted up. FIG. [Figure 11] 10 is a front view showing a state immediately after the start of the return operation of the safety gear actuating device of FIG. 9.

[0023] FIG. [Figure 12] FIG. 12 is a front view showing the state of the safety gear operating device when the car in FIG. 11 has risen further. [Figure 13] 13 is a front view showing a state in which the operating wedge of FIG. 12 is displaced downward. FIG. [Figure 14] FIG. 2 is a front view showing a safety gear operating device according to a first modified example of the first embodiment. [Figure 15] FIG. 10 is a front view showing a safety gear operating device according to a second modified example of the first embodiment. [Figure 16] FIG. 10 is a front view showing an elevator car according to a second embodiment. [Figure 17] FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. [Figure 18] FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. [Figure 19] FIG. 11 is a front view showing an elevator car according to a third embodiment. [Figure 20] FIG. 20 is a configuration diagram showing the buffer mechanism of FIG. 19. [Figure 21] 10 is a graph showing the change over time in the speed of the car and the moving speed of the lateral moving frame when the safety device is activated by the safety device actuation device of the third embodiment. [Figure 22] 10 is a graph showing the change over time in the speed of the car and the moving speed of the lateral moving frame when the safety device is activated by a safety device operating device that does not use a buffer mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1 Figure 1 is a schematic diagram showing the configuration of an elevator according to embodiment 1. In the figure, a machine room 2 is provided above a hoistway 1. In the machine room 2, a hoisting machine 3, a deflector sheave 4, an elevator control device 5, and a safety monitoring device 6 are installed.

[0010] The hoist 3 has a drive sheave 7, a hoist motor (not shown), and a hoist brake (not shown). The hoist motor rotates the drive sheave 7. The hoist brake keeps the drive sheave 7 stationary. The hoist brake also brakes the rotation of the drive sheave 7.

[0011] A suspension body 8 is wound around the drive sheave 7 and the deflector sheave 4. A plurality of ropes or belts is used as the suspension body 8. A car 9 is connected to a first end of the suspension body 8. A counterweight 10 is connected to a second end of the suspension body 8.

[0012] The car 9 and counterweight 10 are suspended by a suspension body 8 and move up and down in the hoistway 1 by rotating the drive sheave 7 .

[0013] A pair of car guide rails 11 and a pair of counterweight guide rails 12 are installed in the hoistway 1. The car 9 moves up and down in the hoistway 1 along the pair of car guide rails 11. The counterweight 10 moves up and down in the hoistway 1 along the pair of counterweight guide rails 12. Only one car guide rail 11 and one counterweight guide rail 12 are shown in FIG. 1.

[0014] The elevator control device 5 controls the operation of the car 9 by controlling the hoisting machine 3 .

[0015] The safety monitoring device 6 monitors whether the speed of the car 9 has reached an excessive speed. The safety monitoring device 6 also monitors whether the acceleration of the car 9 has reached an excessive acceleration. The excessive speed and excessive acceleration are preset in the safety monitoring device 6.

[0016] The functions of the elevator control device 5 and the safety monitoring device 6 can each be realized by a computer.

[0017] An emergency stop device 20 is provided at the bottom of the car 9. The emergency stop device 20 grips the pair of car guide rails 11 to bring the car 9 to an emergency stop.

[0018] The safety monitoring device 6 generates an operation command signal when the speed of the car 9 reaches an excessive speed and when the acceleration of the car 9 reaches an excessive acceleration. The operation command signal is a signal that activates the safety device 20.

[0019] The car 9 is equipped with a safety gear operating device 30. The lifting body in the first embodiment is the car 9. The safety gear operating device 30 has an operating device main body 31 and a lifting rod 32.

[0020] The operating device main body 31 is installed on the top of the car 9. The lifting rod 32 is connected between the operating device main body 31 and the emergency stop device 20. The transmission mechanism of the first embodiment is composed of the lifting rod 32. The operating device main body 31 lifts the lifting rod 32 in response to an operation command signal from the safety monitoring device 6, and activates the emergency stop device 20.

[0021] Fig. 2 is a front view showing the car 9 of Fig. 1. The safety device 20 has an operating lever 21, an interlocking lever 22, and a connecting rod 23.

[0022] The operating lever 21 is rotatable around a horizontal operating lever shaft 21a together with the operating lever shaft 21a relative to the car 9. The interlocking lever 22 is rotatable around a horizontal interlocking lever shaft 22a together with the interlocking lever shaft 22a relative to the car 9.

[0023] The connecting rod 23 is rotatably connected to the operating lever 21 and the interlocking lever 22. The connecting rod 23 transmits the rotation of the operating lever 21 to the interlocking lever 22, causing the interlocking lever 22 to rotate in conjunction with the operating lever 21. At this time, the direction of rotation of the interlocking lever 22 about the interlocking lever shaft 22a is opposite to the direction of rotation of the operating lever 21 about the operating lever shaft 21a.

[0024] The upper end of the lifting rod 32 is connected to the actuator body 31. The lower end of the lifting rod 32 is rotatably connected to the operating lever 21. When the lifting rod 32 is pulled up, the operating lever 21 rotates counterclockwise in FIG. 2, and the interlocking lever 22 rotates clockwise in FIG. 2.

[0025] Fig. 3 is a side view showing a main part of the safety device 20 of Fig. 2. Fig. 4 is a side view showing the safety device 20 of Fig. 3 in an operating state.

[0026] 2, the safety device 20 has a safety frame 24, a pair of wedge guides 25, a pair of wedge guide springs 26, a pair of wedge members 27, and a pair of wedge connecting links 28. In FIG. 3, the pair of wedge connecting links 28 are omitted.

[0027] The emergency stop frame 24 is fixed to the bottom of the car 9. Each wedge guide spring 26 is provided between the corresponding wedge guide 25 and the emergency stop frame 24. Each wedge member 27 is connected to the operating lever shaft 21a via a corresponding wedge connecting link 28.

[0028] When the safety device 20 is inactive, each wedge member 27 faces the car guide rail 11 at a distance. When the safety device 20 is active, the pair of wedge members 27 are moved upward relative to the safety frame 24 by rotation of the operating lever shaft 21a. At this time, each wedge member 27 is guided by the corresponding wedge guide 25 and approaches the car guide rail 11, coming into contact with the car guide rail 11.

[0029] When each wedge member 27 comes into contact with the car guide rail 11, a braking force is generated in the direction opposite to the falling direction of the car 9, and the car 9 is stopped. The magnitude of the braking force is the product of the pressing force of the pair of wedge members 27 against the car guide rail 11 by the pair of wedge guide springs 26 and the coefficient of friction between each wedge member 27 and the car guide rail 11.

[0030] 3 and 4 is also provided on the interlocking lever shaft 22a side. When the safety device 20 is activated, the safety device 20 simultaneously grips the pair of car guide rails 11.

[0031] Fig. 5 is a front view showing the safety gear actuator 30 of Fig. 2. The actuator body 31 has a fixed frame 40, a lifting frame 41, a lateral movement frame 42, a plurality of return springs 43, a movable guide member 44, a plurality of operating springs 45, an actuator 46, an operating wedge 47, a braking member 48, and a plurality of main springs 49.

[0032] The fixed frame 40 is fixed to the upper part of the car 9. The lifting frame 41 is provided inside the fixed frame 40. The lifting frame 41 is displaceable in the vertical direction relative to the car 9 between a non-raised position and a raised position.

[0033] The non-raised position is a position where the lifting frame 41 is placed on the bottom surface of the fixed frame 40, as shown in Fig. 5. The lifted position is a position where the lifting frame 41 is raised above the bottom surface of the fixed frame 40, as shown in Fig. 10. In other words, the lifted position is a position higher than the non-raised position.

[0034] The fixed frame 40 regulates the horizontal displacement of the lifting frame 41 and also guides the vertical displacement of the lifting frame 41.

[0035] The lifting frame 41 is displaced from the non-raised position to the raised position, thereby lifting the lifting rod 32 and activating the safety device 20. At this time, the lifting rod 32 transmits the upward displacement of the lifting frame 41 to the safety device 20.

[0036] The lateral movement frame 42 is provided inside the lifting frame 41. The lateral movement frame 42 is displaceable in the horizontal direction relative to the lifting frame 41, i.e., in the front-to-rear direction of the car 9, between a first horizontal position and a second horizontal position. The front-to-rear direction of the car 9 is a direction perpendicular to a line connecting the centers of the pair of car guide rails 11 when viewed from directly above the car 9, and is a direction parallel to the Y-axis in FIG.

[0037] The first horizontal position is the position shown in Fig. 5. The second horizontal position is a position where the actuator 46 is farther from the car guide rail 11 than at the first horizontal position, as shown in Fig. 8. The lifting frame 41 guides the horizontal displacement of the lateral movement frame 42.

[0038] The plurality of return springs 43 are provided between the lifting frame 41 and the lateral movement frame 42. Furthermore, the plurality of return springs 43 are each compressed when the lateral movement frame 42 is displaced to the second horizontal position. As a result, the plurality of return springs 43 generate a force that returns the lateral movement frame 42 to the first horizontal position.

[0039] The movable guide member 44 is provided inside the lateral movement frame 42. The movable guide member 44 is displaceable in the horizontal direction relative to the lateral movement frame 42, i.e., in the front-to-rear direction of the car 9, between a normal position and an operating position.

[0040] The normal position is the position shown in Fig. 5. The operating position is a position where the movable guide member 44 is closer to the car guide rail 11 than in the normal position, as shown in Fig. 6.

[0041] The movable guide member 44 also has a guide surface 44a. The guide surface 44a faces a side surface of the car guide rail 11. The guide surface 44a is inclined with respect to the car guide rail 11 so as to approach the car guide rail 11 as it extends upward.

[0042] The plurality of operating springs 45 are provided between the lateral movement frame 42 and the movable guide member 44. The plurality of operating springs 45 are compressed when the movable guide member 44 is located in the normal position.

[0043] The actuator 46 is provided between the horizontal movement frame 42 and the movable guide member 44. As the actuator 46, for example, a solenoid is used.

[0044] During normal operation of the car 9, the actuator 46 generates a force that holds the movable guide member 44 in the normal position against the plurality of operating springs 45. When the supply of electricity to the actuator 46 is cut off, the plurality of operating springs 45 displace the movable guide member 44 to the operating position.

[0045] The operating wedge 47 is provided between the movable guide member 44 and the car guide rail 11. The operating wedge 47 is displaceable in the vertical direction relative to the movable guide member 44 along the guide surface 44a.

[0046] The braking member 48 is provided inside the lateral movement frame 42. The braking member 48 faces the car guide rail 11 on the opposite side of the car guide rail 11 from the movable guide member 44. During normal operation of the car 9, a gap is provided between the operating wedge 47 and the braking member 48 and the car guide rail 11 so as not to interfere with the running of the car 9.

[0047] A plurality of main springs 49 are provided between the lateral movement frame 42 and the braking member 48 .

[0048] Figure 6 is a front view showing the state immediately after the start of operation of the safety gear operating device 30 in Figure 5. When the safety monitoring device 6 generates an operation command signal while the car 9 is descending, power to the hoisting machine 3 is cut off. In addition, power to the actuator 46 is cut off, the movable guide member 44 is displaced to the operating position, and the operating wedge 47 comes into contact with the car guide rail 11.

[0049] 6 is displaced upward relative to the movable guide member 44. When the operating wedge 47 comes into contact with the car guide rail 11, the operating wedge 47 is displaced upward relative to the movable guide member 44 along the guide surface 44a due to the frictional force acting between the operating wedge 47 and the car guide rail 11. This causes the movable guide member 44 to be pushed back toward the normal position against the multiple operating springs 45.

[0050] 7 is displaced further upward relative to the movable guide member 44. After the movable guide member 44 returns to its normal position, when the operating wedge 47 is displaced further upward relative to the movable guide member 44, the lateral movement frame 42 is displaced in a direction in which the braking member 48 comes into contact with the car guide rail 11.

[0051] After the braking member 48 comes into contact with the car guide rail 11, when the operating wedge 47 is displaced to the upper end of the guide surface 44a, the lateral movement frame 42 is displaced to the second horizontal position, and the plurality of return springs 43 and the plurality of main springs 49 are compressed. As a result, the car guide rail 11 is sandwiched between the operating wedge 47 and the braking member 48.

[0052] Figure 9 is a front view showing the state of the safety gear operating device 30 when the car 9 is lowered from the state shown in Figure 8. When the car 9 is lowered from the state shown in Figure 8, the lifting frame 41 is displaced upward from the non-raised position to the raised position. As a result, the lateral movement frame 42 is also displaced upward, and the lifting rod 32 is raised.

[0053] In this way, by the movable guide member 44 being displaced to the operating position, the operating wedge 47 comes into contact with the car guide rail 11 and is displaced upward relative to the movable guide member 44 along the guide surface 44a, and the lateral movement frame 42 is displaced horizontally relative to the lifting frame 41. As a result, the car guide rail 11 is sandwiched between the operating wedge 47 and the braking member 48, the multiple main springs 49 are compressed, and the lifting frame 41 is displaced to the lifting position.

[0054] Fig. 10 is a front view showing a state in which the lifting rod 32 of Fig. 2 is lifted. When the lifting rod 32 is lifted, the operating lever 21 and the interlocking lever 22 each rotate, and the safety device 20 is activated. This brings the car 9 to an emergency stop.

[0055] Next, the return operation of the emergency stop device 20 and the emergency stop operating device 30 after an emergency stop of the car 9 will be described. When the emergency stop device 20 and the emergency stop operating device 30 are caused to perform a return operation, current is applied to the actuator 46 to hold the movable guide member 44 in its normal position. Next, the car 9 is raised by the hoisting machine 3 from the state shown in FIG.

[0056] Fig. 11 is a front view showing the state immediately after the start of the return operation of the safety gear actuating device 30 in Fig. 9. Since the car guide rail 11 is sandwiched between the operating wedge 47 and the braking member 48, when the fixed frame body 40 rises due to the rise of the car 9, the lateral movement frame body 42 descends relative to the fixed frame body 40 and the car 9.

[0057] As a result, the lifting rod 32 descends relative to the car 9, the operating lever 21 rotates clockwise in FIG. 10, and the interlocking lever 22 rotates counterclockwise in FIG.

[0058] Figure 12 is a front view showing the state of the safety gear operating device 30 when the car 9 in Figure 11 has risen further. When the car 9 has risen further, the lifting frame 41 returns to the non-raised position, the operating lever 21 and the interlocking lever 22 return to the positions shown in Figure 2, and the pair of wedge members 27 return from the state in Figure 4 to the state in Figure 3.

[0059] Figure 13 is a front view showing a state in which the operating wedge 47 in Figure 12 has been displaced downward. When the car 9 rises further from the state in Figure 12, a gap is created between the operating wedge 47 and the car guide rail 11, and the operating wedge 47 falls along the guide surface 44a.

[0060] As a result, each return spring 43 is restored to its original position, the horizontal movement frame 42 is returned to the first horizontal position, and the braking member 48 moves away from the car guide rail 11.

[0061] In such an elevator safety device 30, a movable guide member 44, a plurality of operating springs 45, an actuator 46, an operating wedge 47, a braking member 48, and a main spring 49 are provided on a horizontally moving frame 42. The horizontally moving frame 42 is capable of being displaced in the horizontal direction.

[0062] Therefore, during the return operation, by raising the car 9, the operating wedge 47 is dropped, the lateral movement frame 42 is returned to the first horizontal position, and the braking member 48 can be separated from the car guide rail 11. This makes it possible to reduce the driving force and range of motion required of the actuator 46, and the capacity of the actuator 46 can be made smaller.

[0063] Furthermore, since the lateral movement frame 42 is displaceable in the horizontal direction, the safety device 20 can be stably operated even when the distance between the normal position and the operating position varies.

[0064] The car 9 is also provided with a fixed frame 40. The fixed frame 40 guides the vertical displacement of the lifting frame 41. This allows the lifting frame 41 to be stably displaced between the non-raised position and the lifted position, and the safety device 20 to be stably operated.

[0065] The connection point of the lifting rod 32 to the operating device main body 31 is not limited to the horizontal movement frame 42 .

[0066] 14 is a front view showing a safety gear actuating device 30 according to a first modified example of embodiment 1. In the first modified example, the upper end of the lifting rod 32 is rotatably connected to the movable guide member 44. In this manner, the lifting rod 32 may be connected to the movable guide member 44.

[0067] 15 is a front view showing a safety gear operating device 30 according to a second modification of Embodiment 1. In the second modification, the upper end of the pull-up rod 32 is rotatably connected to the braking member 48. In this manner, the pull-up rod 32 may be connected to the braking member 48.

[0068] Embodiment 2 Next, Fig. 16 is a front view showing an elevator car 9 according to Embodiment 2. Fig. 17 is a cross-sectional view taken along line XVII-XVII in Fig. 16. Fig. 18 is a cross-sectional view taken along line XVIII-XVIII in Fig. 17.

[0069] Although omitted in the first embodiment, the car 9 has a car frame 13 and a car chamber 14. The car frame 13 has first vertical pillars 15, second vertical pillars 16, an upper beam 17, and a car floor 18. The car chamber 14 is supported on the car floor 18. The safety device 20 is supported on the lower part of the car floor 18.

[0070] The upper beam 17 is disposed horizontally above the car chamber 14. The suspension body 8 is connected to the upper beam 17.

[0071] The first vertical pillar 15 and the second vertical pillar 16 connect the upper beam 17 and the car floor 18. The first vertical pillar 15 and the second vertical pillar 16 are arranged parallel to the pair of car guide rails 11. The first vertical pillar 15 faces one of the pair of car guide rails 11. The second vertical pillar 16 faces the other of the pair of car guide rails 11. The cross-sectional shape of each of the first vertical pillar 15 and the second vertical pillar 16 is U-shaped.

[0072] The configuration of the actuating device body 31 of the second embodiment is the same as that of the actuating device body 31 of the first embodiment except that the fixed frame body 40 is removed. Furthermore, the lifting frame body 41 of the second embodiment is disposed inside the first vertical pillar 15. That is, the actuating device body 31 of the second embodiment is disposed inside the first vertical pillar 15. As a result, the lifting rod 32 is passed through the inside of the first vertical pillar 15.

[0073] The lifting frame 41 is displaced in the up and down direction while being guided by the first vertical pillar 15. A stopper plate 50 is fixed to the first vertical pillar 15. The stopper plate 50 restricts the displacement of the lifting frame 41 downward from the non-raised position.

[0074] Other configurations and operations in the second embodiment are the same as those in the first embodiment. Even with this configuration, the same effects as those in the first embodiment can be obtained.

[0075] Furthermore, since the fixed frame 40 of the first embodiment is omitted, an increase in the number of parts can be suppressed.

[0076] Furthermore, the lifting frame 41 is displaced in the up and down direction while being guided by the first vertical pillar 15. Therefore, the lifting frame 41 can be stably displaced between the non-raised position and the raised position, and the safety device 20 can be stably operated.

[0077] Embodiment 3 Next, Figure 19 is a front view showing an elevator car 9 according to embodiment 3. The safety gear actuating device 30 of embodiment 3 has an actuating device main body 31, a lifting rod 32, and a buffer mechanism 33. The lifting rod 32 is divided into an upper portion 32a and a lower portion 32b.

[0078] The buffer mechanism 33 is provided in the middle of the lifting rod 32, that is, between the upper portion 32a and the lower portion 32b. The buffer mechanism 33 also serves to suppress the impact load acting on the lifting rod 32.

[0079] Fig. 20 is a configuration diagram showing the buffer mechanism 33 of Fig. 19. The buffer mechanism 33 has a buffer spring 34, a cylinder 35, a rod 36, and a pin 37.

[0080] The buffer spring 34 is connected to the lower end of the upper portion 32a. The cylinder 35 is connected to the upper end of the lower portion 32b. The cylinder 35 has a slit 35a.

[0081] The rod 36 is provided between the buffer spring 34 and the cylinder 35. The lower end of the rod 36 is inserted into the cylinder 35. The pin 37 is fixed to the lower end of the rod 36. The pin 37 is passed through the slit 35a.

[0082] The assembly of the cylinder 35 and the rod 36 can be extended or retracted by changing the amount of protrusion of the rod 36 from the cylinder 35. By changing the amount of protrusion of the rod 36 from the cylinder 35, the pin 37 moves within the slit 35a. Therefore, the amount of protrusion of the rod 36 from the cylinder 35 is limited by the slit 35a.

[0083] Fig. 21 is a graph showing the change over time in the speed of the car 9 and the moving speed of the lateral movement frame 42 when the safety device 20 is activated by the safety device activation device 30 of embodiment 3. Also, Fig. 22 is a graph showing the change over time in the speed of the car 9 and the moving speed of the lateral movement frame 42 when the safety device 20 is activated by the safety device activation device 30 in which the buffer mechanism 33 is not used.

[0084] 22, after the car 9 starts to fall, the operation of the safety gear operating device 30 starts at time t1. After that, at time t2, the operating wedge 47 reaches the upper end of the guide surface 44a, and the operation of pulling up the operating lever 21 starts. This causes the lateral movement frame 42 to start decelerating.

[0085] At time t3, when the operating lever 21 reaches the end of its range of motion, the car 9 begins to decelerate. At this time, a speed difference occurs between the car 9 and the lateral movement frame 42. Then, from time t3 to time t4, a load is applied to the lifting rod 32 so that the speed difference between the car 9 and the lateral movement frame 42 becomes zero.

[0086] If the rigidity of the lifting rod 32 is high, the time from time t3 to time t4 will be short, and a large impact load will act on the lifting rod 32.

[0087] In contrast to this, in the third embodiment, a buffer mechanism 33 is provided on the lifting rod 32. An initial compressive force is applied to the buffer spring 34 so that it does not become displaced during the operation up to time t3.

[0088] 21, the time from time t3 to time t5, at which the speed difference between the car 9 and the lateral movement frame 42 becomes 0, is lengthened. Therefore, the impact load acting on the lifting rod 32 from time t3 to time t5 is suppressed.

[0089] Other configurations and operations in the third embodiment are the same as those in the first embodiment.

[0090] With this configuration, the impact load acting on the lifting rod 32 is suppressed, so the strength required for each component of the emergency stop operating device 30 can be reduced, making the entire device smaller and lighter.

[0091] The lifting rod 32 of the second embodiment may be provided with a buffer mechanism 33 similar to that of the third embodiment.

[0092] Furthermore, the safety monitoring device 6 may monitor only either the excessive speed of the car 9 or the excessive acceleration of the car 9 .

[0093] The safety device 20 may also be configured to be activated by a mechanical governor.

[0094] The lifting body may be the counterweight 10 or may be both the car 9 and the counterweight 10.

[0095] Furthermore, the overall layout of the elevator is not limited to the layout shown in Figure 1. For example, the roping system may be a 2:1 roping system.

[0096] The elevator may also be a machine room-less elevator, a double-deck elevator, a one-shaft multi-car elevator, etc. In a one-shaft multi-car elevator, an upper car and a lower car located directly below the upper car each travel independently up and down a common elevator shaft.

[0097] Although the preferred embodiments have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0098] Various aspects of the present disclosure are summarized below as appendices.

[0099] (Appendix 1) a lifting frame that is displaceable in the vertical direction between a non-raised position and a raised position that is a position higher than the non-raised position relative to the lifting body that rises and falls along the guide rail, and that is displaceable from the non-raised position to the raised position; a transmission mechanism that transmits the vertical displacement of the lifting frame body relative to the lifting body to an emergency stop device and activates the emergency stop device; a horizontally movable frame provided on the lifting frame so as to be displaceable in a horizontal direction relative to the lifting frame between a first horizontal position and a second horizontal position; a return spring provided between the lifting frame and the lateral movement frame, which generates a force to return the lateral movement frame to the first horizontal position; a movable guide member provided on the lateral movement frame, the movable guide member having a guide surface facing the guide rail and capable of being displaced in a horizontal direction relative to the lateral movement frame between a normal position and an operating position; an operating spring provided between the lateral movement frame and the movable guide member for displacing the movable guide member to the operating position; an actuator that holds the movable guide member in the normal position against the operating spring; an operating wedge provided between the movable guide member and the guide rail and displaceable in the vertical direction relative to the movable guide member along the guide surface; a braking member provided on the lateral movement frame and facing the guide rail on the opposite side of the guide rail from the movable guide member; and A main spring provided between the lateral movement frame and the braking member Equipped with the guide surface is inclined with respect to the guide rail so as to approach the guide rail as it goes upward, When the movable guide member is displaced to the operating position, the operating wedge contacts the guide rail and displaces upward relative to the movable guide member along the guide surface, the lateral movement frame displaces horizontally relative to the lifting frame, the guide rail is sandwiched between the operating wedge and the braking member, the main spring is compressed, and the lifting frame is displaced to the lifting position. (Appendix 2) a fixed frame provided on the lifting body for guiding the lifting frame in the vertical direction; 2. The elevator emergency stop operating device according to claim 1, further comprising: (Appendix 3) the elevator body is a car having a car frame and a cab supported by the car frame, The car frame has a vertical pillar facing the guide rail, The lifting frame is arranged inside the vertical pillar and is guided by the vertical pillar to displace in the vertical direction. (Appendix 4) A buffer mechanism provided in the transmission mechanism for suppressing impact loads acting on the transmission mechanism. An elevator emergency stop operating device according to any one of appendices 1 to 3, further comprising: (Appendix 5) An emergency stop operating device for an elevator as described in any one of Appendix 1 to Appendix 4, wherein the transmission mechanism is connected between the lateral movement frame body and the emergency stop device. (Appendix 6) An elevator emergency stop operating device according to any one of appendices 1 to 4, wherein the transmission mechanism is connected between the movable guide member and the emergency stop device. (Appendix 7) An elevator emergency stop operating device according to any one of appendices 1 to 4, wherein the transmission mechanism is connected between the braking member and the emergency stop device. [Explanation of symbols]

[0100] 9 Cage (lifting body), 11 Cage guide rail, 20 Emergency stop device, 30 Emergency stop operating device, 32 Lifting rod (transmission mechanism), 33 Buffer mechanism, 40 Fixed frame body, 41 Lifting frame body, 42 Lateral moving frame body, 43 Return spring, 44 Movable guide member, 45 Operating spring, 46 Actuator, 47 Operating wedge, 48 Braking member, 49 Main spring.

Claims

1. a lifting frame that is displaceable in the vertical direction between a non-raised position and a raised position that is a position higher than the non-raised position relative to the lifting body that rises and falls along the guide rail, and that is displaceable from the non-raised position to the raised position; a transmission mechanism that transmits the vertical displacement of the lifting frame body relative to the lifting body to an emergency stop device and activates the emergency stop device; a horizontally movable frame provided on the lifting frame so as to be displaceable in a horizontal direction relative to the lifting frame between a first horizontal position and a second horizontal position; a return spring provided between the lifting frame and the lateral movement frame, which generates a force to return the lateral movement frame to the first horizontal position; a movable guide member provided on the lateral movement frame, the movable guide member having a guide surface facing the guide rail and capable of being displaced in a horizontal direction relative to the lateral movement frame between a normal position and an operating position; an operating spring provided between the lateral movement frame and the movable guide member for displacing the movable guide member to the operating position; an actuator that holds the movable guide member in the normal position against the operating spring; an operating wedge provided between the movable guide member and the guide rail and displaceable in the vertical direction relative to the movable guide member along the guide surface; a braking member provided on the lateral movement frame and facing the guide rail on the opposite side of the guide rail from the movable guide member; and A main spring provided between the lateral movement frame and the braking member Equipped with the guide surface is inclined with respect to the guide rail so as to approach the guide rail as it goes upward, When the movable guide member is displaced to the operating position, the operating wedge contacts the guide rail and displaces upward relative to the movable guide member along the guide surface, the lateral movement frame displaces horizontally relative to the lifting frame, the guide rail is sandwiched between the operating wedge and the braking member, the main spring is compressed, and the lifting frame is displaced to the lifting position.

2. a fixed frame provided on the lifting body for guiding the lifting frame in the vertical direction; 2. The elevator safety device according to claim 1, further comprising:

3. the elevator body is a car having a car frame and a cab supported by the car frame, The car frame has a vertical pillar facing the guide rail, 2. The emergency stop operating device for an elevator according to claim 1, wherein the lifting frame is disposed inside the vertical pillar and is guided by the vertical pillar to be displaced in the up-down direction.

4. A buffer mechanism provided in the transmission mechanism for suppressing impact loads acting on the transmission mechanism. The emergency stop operating device for an elevator according to any one of claims 1 to 3, further comprising:

5. 4. The elevator safety device according to claim 1, wherein the transmission mechanism is connected between the horizontally moving frame and the safety device.

6. 4. The elevator safety device according to claim 1, wherein the transmission mechanism is connected between the movable guide member and the safety device.

7. 4. The elevator safety device according to claim 1, wherein the transmission mechanism is connected between the braking member and the safety device.

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