JP2009298508A - Safety device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device of an elevator capable of exerting a stable braking force by rotating a shaft by a simple structure. <P>SOLUTION: The safety device 20 is provided with the rotatable shaft 30 by arranging one end side and the other end side in a first emergency stop device and a second emergency stop device, respectively, a wedge pushing-up cam 31 provided at the shaft 30 to push up two wedges 40 of the first emergency stop device 21 and two wedges of the second emergency stop device by rotation of the shaft 30, a lever 32 for rotating the shaft 30 by transmitting a force generated by the relative motion of a governor rope and a car by connecting one side of the shaft 30 and the governor rope, a switch operation cam for operating a power source switch by the rotation of the shaft 30, and a spring for connecting the shaft 30 so that the shaft 30 may not be rotated by the force generated by the governor rope or by a force smaller the force. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator safety device, and more particularly to an elevator safety device including a safety link mechanism having a rotatable shaft and a lever.

  In order to be able to stop the car safely when the elevator car is raised or lowered at an unusually high speed for any reason, an elevator safety device is provided for the car or counterweight. Yes.

  When the elevator car or counterweight is raised or lowered at an abnormally high speed for any reason, this elevator safety device detects the rising or lowering at this high speed and operates the safety link mechanism to operate the car. Stop safely.

  FIG. 10 shows a general elevator structure in which an elevator safety device having a safety link mechanism is provided in the car 103. The safety link mechanism has a pair of safety 105 and safety link 106.

  In the structure of the elevator shown in FIG. 10, two rails 102 are provided on the wall of the hoistway 101, and the car 103 is guided along the rails 102 via the guide device 104. You can go up and down. A pair of safetys 105 is provided on the lower beam 103 at the bottom of the car 103.

  Each safety 105 has a pair of wedges. In an emergency, the safety link 106 moves the pair of wedges of the safety 105 and brakes by sandwiching both sides of the guide rail 102 by the pair of wedges. 103 is stopped. A pivotable safety link 106 is provided below the car 103 in order to operate the safety 105. One end of the safety link 106 is connected to a governor rope 108 via a governor rope hitch 107.

  The governor rope 108 is stretched between a governor 108A provided at the upper part of the hoistway 101 and a governor tensioner 108B provided near the lower pit. Since the governor rope hitch 107 and the safety link 106 are connected to the car 103 side, the governor rope 108 moves up and down in conjunction with the raising and lowering of the car 103.

  If the car 103 is raised or lowered along the Z direction at a high speed due to some abnormality, the governor rope 108 moves at a high speed along with the rising or lowering, and the governor 108A is moved to the governor 108A. An abnormality is detected based on the rotation of the wheel to operate the governor rope gripping portion 108D. As a result, the movement of the governor rope 108 stops, while the car 103 still continues to rise or descend. For this reason, the relative movement of the governor rope 108 and the car 103 occurs, and the safety link 106 is pulled up via the governor rope hitch 107 by this relative movement, and the pair of wedges of each safety 105 corresponds. The car 103 is stopped by braking on both sides of each guide race 102.

The structure of such an elevator safety device is described in Patent Document 1.
Japanese Patent Publication No. 2001-122551

  Incidentally, as described above, each safety 105 has two wedges, and the two wedges are connected to the safety link 106 via the lift rod 110. However, the safety link 106 and the lift rod 110 are connected to the two wedges (both sides) shown in FIGS. 11 (A) and 11 (B), and 1 shown in FIGS. 12 (A) and 12 (B). Sometimes one (one side) wedge is connected.

  11A and 11B show a case where the safety link 106 and the lift rod 110 are connected to the wedges 119 and 119 on both sides.

  The governor rope hitch 107 shown in FIGS. 11A and 11B is connected to a lever 109, and the lever 109 is attached to one side portion 103C of the lower beam 103A. Further, as shown in FIG. 11B, a lever 111B different from the lever 109 is connected to wedges 119 on both sides via a lift rod 110. The lever 111B is attached to the one side portion 103C of the lower beam 103A via a shaft 111F.

  Another lever 111C is attached to the other side portion 103D of the lower beam 103A shown in FIG. Both levers 111B and 111C are connected by a long rod 112. A spring 113 is attached to the center of the rod 112 and is adjusted so that the rod 112 does not move by a force of the spring 113 below a certain driving force generated from the governor rope.

  A power switch 114 is attached to the lower beam 103A shown in FIG. 11A, and the cam 115 attached to the other lever 111C can detect the movement of the rod 112. In the safety link mechanism of the safety device having such a configuration, the two wedges 119 on both sides are lifted simultaneously via the levers 111B and 111C and the lift rod 110, so that both wedges 118 are simultaneously in contact with both sides of the guide rail. However, the structure of the safety link mechanism is complicated.

  12A and 12B show a case where the safety link 106 and the lift rod 110 are connected to the wedge 119 on one side.

  A rotatable shaft 116 is horizontally attached to the lower part of the lower beam 103, and a lever 117 is provided only on one end side of the shaft 116. This lever 117 is connected to the governor rope hitch 107. By connecting the lever 117 to one wedge 118, the lever 117 functions as a lift rod for pushing up the wedge 118 in the Z1 direction, so that the number of parts of the safety link mechanism can be reduced.

  However, as shown in FIG. 12B, when the safety link and one wedge 119 are connected, one wedge 119 connected to the safety link moves in conjunction with the other, and the other wedge 120 moves with the safety link. Since the two wedges 119 and 120 come into contact with both sides of the guide rail 102 after one wedge 119 comes into contact with one side of the guide rail 102 because of not being connected, there is an operation delay until the safety 105 operates. .

  When the car is light and the braking force of the safety is large, there is a possibility that the car is stopped with one wedge 118 in contact. If the clearance between the wedge 120 and one side of the guide rail 102 is to be reduced in order to prevent this operation delay in order to prevent the car from being stopped in a state where one wedge 118 is in contact, the wedge 120 will be moved to the guide rail 102. It becomes easy to touch the side of the. For this reason, it is difficult for the safety link mechanism of such a safety device to exhibit a stable braking force as a device for stably stopping the car.

  Moreover, in the elevator safety device described in Patent Document 1, it is necessary to connect a plurality of levers and long rods, and the structure is complicated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator safety device that has a simple structure and can exhibit a stable braking force by rotating a shaft. can do.

  A safety device for an elevator according to the present invention provides a first emergency stop provided on both sides of the car for applying a force caused by a relative motion between the governor rope suspended from the governor of the elevator and the car. The two wedges of the device and the two wedges of the second emergency stop device are transmitted to the two wedges of the first emergency stop device and the two wedges of the second emergency stop device, respectively. A safety device for an elevator that stops the car by pinching, wherein one end portion is disposed in the first emergency stop device and the other end portion is disposed in the second emergency stop device and is rotatable. A wedge push-up cam that is provided on the shaft and pushes up the two wedges of the first emergency stop device and the two wedges of the second emergency stop device by rotation of the shaft; A lever that connects a speed rope and transmits a force generated by relative motion between the governor rope and the car to the shaft to rotate the shaft, and a power switch by rotating the shaft And a spring for connecting the shaft so that the shaft does not rotate below the force generated by the governor rope.

  According to the present invention, it is possible to provide an elevator safety device that has a simple structure and can exhibit a stable braking force by rotating a shaft.

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

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 shows a configuration example of an elevator provided with a first preferred embodiment of an elevator safety device of the present invention. FIG. 2 is a front view showing the safety device and lower beam of the elevator shown in FIG. FIG. 3 is an enlarged view of the structure of the elevator safety device in FIG. 2 as viewed from the T direction.

  First, the structure of an elevator is demonstrated with reference to FIG. A car 2 of the elevator 1 shown in FIG. 1 is suspended from one end of a rope 3, and is guided along two guide rails 6 in the hoistway 5 by the operation of the motor of the hoisting machine 4. It goes up and down in the Z direction. A lower beam 9 is provided at the lower part of the car 2. A counterweight 7 is attached to the other end of the rope 3. The counterweight 7 is guided along the two guide rails 8 and moved up and down in the Z direction.

  The embodiment shown in FIG. 1 is an example in which an elevator safety device 20 is mounted on the lower beam 9 side of the car 1.

  The speed governor 19 illustrated in FIG. 1 includes a governor rope 10, a governor 11, and a governor tensioner 12. The governor rope 10 is stretched over a governor 11 provided at the upper part of the hoistway 5 and a governor tensioner 12 provided near the lower pit. Since this governor rope 10 is connected to the car 2 via the governor rope hitch 13 and the elevator safety device 20, the governor rope 10 moves up and down in conjunction with the raising and lowering of the car 2.

  FIG. 2 shows a structural example of the elevator safety device 20. In FIG. 2, the elevator safety device 20 is mounted on the lower beam 9 of the car 2. The lower beam 9 is attached along the L direction at the lower part of the car 2, and the lower beam 9 has two beam members 9B and 9C as shown in FIG. The beam members 9B and 9C are arranged at intervals so as to be parallel.

  The elevator safety device 20 shown in FIG. 2 generates a force generated by the relative motion between the governor rope 10 suspended from the governor 19 shown in FIG. 1 and the car 2 via the safety link mechanism 2. Are transmitted to the two wedges 40 of the first emergency stop device 21 and the two wedges 40 of the second emergency stop device 22. 2 The car 2 is stopped by sandwiching the two wedges 40 of the emergency stop device 22 in contact with both sides of the corresponding guide rails 6.

  As shown in FIGS. 2 and 3, the elevator safety device 20 includes a first emergency stop device 21, a second emergency stop device 22, one shaft 30, two wedge lifting cams 31, and one A lever 32, one switch operation cam 33, and two springs 34 are provided.

  As shown in FIG. 2, the shaft 30 is disposed on the lower side of the lower beam 9 so as to be rotatable along the L direction, which is the rail gauge direction, from the one end 9D side to the other end 9F side of the lower beam 9. Has been. The shaft 30 is supported by the plurality of support members 9M so as to be rotatable about the central axis CL shown in FIG.

  As shown in FIG. 2, the first emergency stop device 21 is disposed on one end portion 9 </ b> D side of the lower beam 9, and the second emergency stop device 22 is disposed on the other end portion 9 </ b> F side of the lower beam 9. That is, the first emergency stop device 21 is disposed on the one end 30 </ b> R side of the shaft 30, and the second emergency stop device 22 is disposed on the other end 30 </ b> L side of the shaft 30.

  Next, with reference to FIG. 3, the structural example of the 1st emergency stop apparatus 21 and the 2nd emergency stop apparatus 22 is demonstrated.

  3A shows a state where the two wedges 40 on the first emergency stop device 21 side are positioned at the lowest position, and FIG. 3B shows the two wedges on the first emergency stop device 21 side. 40 shows a state in which 40 is pushed up in the Z1 direction and positioned at the uppermost position so as to be brought into contact with both sides of the guide race 6 and pinched.

  As shown in FIG. 3A, the first emergency stop device 21 has two wedges 40, two guide members 41, a frame 42, and a plate 43. The frame 42 is fixed between the beam members 9B and 9C of the lower beam 9, and the two guide members 41 are fixed to the frame 42 in an inclined manner.

  The guide rail 6 passes through the center position of the two guide members 41 along the Z direction. The interval between the upper ends of the two guide members 41 is set smaller than the interval between the lower ends of the two guide members 41. The two wedges 40 are arranged to face the inner sides of the two guide members 41 at an interval in the plate 43. As shown in FIGS. 3 (A) to 3 (B), the plates 43 of the two wedges 40 are raised in the Z1 direction, so that the two wedges 40 are guided by the two guide members 41 and spaced from each other. The two wedges 40 sandwich the guide rail 6 from both sides.

  Similarly, the second emergency stop device 22 shown in FIG. 2 has the same structure as the first emergency stop device 21, and has two wedges 40, two guide members 41, a frame 42, and a plate. 43.

  Thereby, the two wedges 40 of the first emergency stop device 21 sandwich one guide rail 6 from both sides, and the two wedges 40 of the second emergency stop device 22 sandwich the other guide rail 6 from both sides. Yes.

  The left and right wedge push-up cams 31 shown in FIGS. 2 and 3 are provided on one end side and the other end side of the shaft 30, and the left and right wedge push-up cams 31 are two wedges 40 of the first emergency stop device 21. And the function of pushing up the two wedges 40 of the second emergency stop device 22 simultaneously. Specifically, as shown in FIG. 3, each wedge push-up cam 31 is fixed to one end 30R and the other end 30L of the shaft 30, respectively.

  As shown in FIG. 3, one end portion 32B of the lever 32 is fixed to the shaft 30, and the other end portion 32C of the lever 32 is connected to the governor rope hitch 13 so as to be rotatable via a pin 13P. Thus, the lever 32 is disposed only on one side of the shaft 30, and the lever 32 connects the shaft 30 and the governor rope hitch 13 of the governor rope 10.

  As shown in FIG. 3, the wedge push-up cam 31 has a flat support surface 31T, and as shown in FIG. 3A, the two wedges 40 and the plate 43 are positioned at the lowest position. In the state, the flat support surface 31T is positioned horizontally along the X direction. However, as shown in FIG. 3B, in the state where the two wedges 40 and the plate 43 are positioned at the uppermost position, the flat support surface 31T is inclined with respect to the X direction, thereby providing a flat support. The upper end 31R of the surface 31T pushes up the lower end of the plate 43 in the Z1 direction. The X direction, the L direction, and the Z direction are orthogonal to each other.

  The switch operation cam 33 shown in FIG. 2 operates the switch 45 by the rotation of the shaft 30. By operating this switch 45, the power of the motor of the hoisting machine 4 is cut off.

  The spring 34 shown in FIG. 2 couples the shaft 30 via a connecting component 39 so that the shaft 30 does not rotate below the driving force generated by the governor rope 10. As a result, the shaft 30 does not rotate unnecessarily below the driving force generated by the governor rope 10 and does not cause an emergency stop operation.

  Next, the operation of the elevator safety device 20 will be described with reference to FIGS. 2 and 3.

  A car 2 of the elevator 1 shown in FIG. 1 is guided along the two guide rails 6 in the hoistway 5 by the operation of the hoisting machine 4 and moves up and down in the Z direction during normal operation. In the case of this normal operation, as shown in FIG. 3A, the governor rope hitch 13 is lowered, and the one end portion 32B of the lever 32 is at an upper position compared to the other end portion 32C. In a state where the two wedges 40 and the plate 43 are positioned at the lowest position, the flat support surface 31T of the wedge push-up cam 31 is positioned horizontally along the X direction. The entire surface of the flat support surface 31T supports the lower end portion of the plate 43.

  However, when the car 2 shown in FIG. 1 is raised or lowered at an abnormally high speed for some reason, it is necessary to make the car 2 emergency stop.

  Therefore, when the car 2 is raised or lowered at an abnormally high speed, the driving force generated due to the relative movement between the governor rope 10 suspended from the governor 19 and the car 2 is shown in FIG. The two wedges 40 of the first emergency stop device 21 and the two wedges 40 of the second emergency stop device 22 are simultaneously transmitted to the two wedges 40 of the first emergency stop device 21 and the second emergency stop device 22 shown in FIG. The two wedges 40 are brought into contact with the corresponding guide rails 6 to sandwich the car 2 in an emergency stop.

  That is, as shown in FIG. 3B, since the governor rope hitch 13 is lifted in the Z1 direction by the driving force generated due to the relative movement between the governor rope 10 and the car 2, the lever 32 is moved to the center axis CL. Is rotated in the R direction (counterclockwise in FIG. 3B), the other end 32C of the lever 32 is lifted compared to the one end 32B. For this reason, since the upper end 31R of the flat support surface 31T of the wedge push-up cam 31 pushes up the lower end of the plate 43 in the Z1 direction, the two wedges 40 ascend together with the plate 43 in the Z1 direction. When 40 sandwiches and contacts both sides of the guide rail 6, the safety is operated and the car 2 stops with a stable braking force.

  Thus, by rotating the shaft 30, the pair of wedges 40 on the one end portion 30 </ b> R side of the shaft 30 shown in FIG. 2 is raised through the single plate 43, and at the same time, the shaft 30 shown in FIG. The pair of wedges 40 on the other end 30 </ b> L side is raised through one plate 43. By simply pushing up the plate 43 on the one end 30R side of the shaft 30 and the plate 43 on the other end 30L side of the shaft 30 simultaneously in the Z1 direction, the two pairs of wedges 40 are brought into contact with both surfaces of the guide rail 6 simultaneously. It is possible to obtain a stable and reliable braking force of the car 2.

  In addition, since the rod 112 as shown in FIG. 11 which has been conventionally used can be omitted, the number of parts is reduced and the structure is simplified. The elevator safety device 20 has a simple structure and can exhibit a stable braking force by rotating the shaft 30.

  The rotating shaft 30 can transmit the force on the governor 19 side to the two wedges 40 of the first emergency stop device 21 and the two wedges 40 of the second emergency stop device 22, and each wedge 40 is simultaneously applied to the guide rail. Since it can contact, the car 2 can be braked and a safety link mechanism with a small number of parts can be configured.

(Second Embodiment)
Next, a second embodiment of the elevator safety device according to the present invention will be described with reference to FIGS. Note that, in the second embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description of the same components is omitted because it is duplicated.

  The elevator safety device 20B of the second embodiment shown in FIGS. 4 and 5 differs from the elevator safety device 20 of the first embodiment shown in FIGS. 2 and 3 in the other end of the lever 32S. That is, the chamfered portion 50 is directly formed with respect to the portion 32B. The chamfered portion 50 is formed in place of the wedge push-up cam 31 shown in FIG. 3, and the lower end portion of the plate 43 is supported on the flat support surface of the chamfered portion 50.

  As shown in FIGS. 5 (A) to 5 (B), the lever 32S rotates in the R direction around the central axis CL to push up the lower end of the plate 43 in the Z1 direction. The two wedges 40 rise in the Z1 direction, and the two wedges 40 sandwich and contact both sides of the guide rail 6, whereby a stable braking force is obtained and the car 2 stops.

  In the elevator safety device 20B shown in FIGS. 4 and 5, since the chamfered portion 50 is formed in place of the wedge push-up cam 31 shown in FIG. 3, the wedge push-up cam 31 can be omitted and the number of parts can be reduced. Can do.

  As described above, the two wedges 40 are fixed to the single plate 43, and the two wedges 40 can be simultaneously brought into contact with both surfaces of the guide rail 6 by pushing the plate 43 in the Z1 direction. And a stable and reliable braking force of the car can be obtained. Since the parts of the wedge push-up cam and the lever for lifting the two wedges 40 can be unified, the number of parts is reduced and the structure is simplified. The elevator safety device 20 </ b> B has a simple structure and can exhibit a stable braking force by rotating the shaft 30.

  The rotating shaft 30 can transmit the force on the governor 19 side to the two wedges 40 of the first emergency stop device 21 and the two wedges 40 of the second emergency stop device 22, and each wedge is simultaneously applied to the guide rail. Since it can contact, it can be made to brake stably and can constitute a safety link mechanism with few parts.

(Third embodiment)
Next, a third embodiment of the elevator safety apparatus according to the present invention will be described with reference to FIG. Note that, in the third embodiment, the same components as those described in the second embodiment are denoted by the same reference numerals, and the description of the same components is omitted because it is duplicated.

  The elevator safety device 20C of the third embodiment shown in FIG. 6 is different from the elevator safety device 20B of the second embodiment shown in FIGS. 4 and 5 in that the intermediate portion 32N of the lever 32S is a switch. 45 can be operated. That is, the lever 32S rotates in the R direction about the central axis CL, so that the intermediate portion 32N of the lever 32S operates the switch 45 when the lower end portion of the plate 43 is pushed up in the Z1 direction. As a result, the switch 45 is turned on, and for example, the motor of the hoisting machine can be turned off.

  In the elevator safety device 20C shown in FIG. 6, the lever 32S can also be used as a cam for operating the switch 45. Therefore, the switch operating cam 33 shown in FIG. Since the cam parts for operating the switch can be unified, the number of parts can be reduced.

(Fourth embodiment)
Next, a fourth embodiment of the elevator safety device according to the present invention will be described with reference to FIG. Note that, in the fourth embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description of the same components is omitted because it is duplicated.

  The elevator safety device 20D of the second embodiment shown in FIG. 7 differs from the elevator safety device of the first embodiment shown in FIGS. 2 and 3 in that the intermediate portion 32N of the lever 32S and the lower beam That is, one spring 34 is arranged between the lower end portion 9 </ b> F of 9. By providing this one spring 34, the shaft 30 does not rotate unnecessarily below the driving force generated by the governor rope 10, and the emergency stop operation is not caused. The spring 34 shown in FIG. 7 is arranged in place of the two springs 34 shown in FIG. Thereby, the connection component 39 shown in FIG. 2 can be omitted, and the number of components can be further reduced.

(Fifth embodiment)
Next, a fifth embodiment of an elevator safety device according to the present invention will be described with reference to FIGS. Note that, in the fifth embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and description of the same components is omitted because it is repeated.

    The elevator safety device 20E of the second embodiment shown in FIGS. 8 and 9 is different from the elevator safety device 20 of the first embodiment shown in FIGS. 2 and 3 in FIGS. The first groove portion 60B is formed at one end portion 30R of the shaft 30 and the second groove portion 60C is formed at the other end portion 30L of the shaft 30 instead of the cam 31 shown in FIG. A lower end portion 49 of the first plate 43B is placed on the first groove portion 60B, and a lower end portion 49 of the second plate 43C is placed on the second groove portion 60C.

  The first plate 43B is fixed to the two wedges 40 of the first emergency stop device 21 and is disposed in the first groove 60B. The second plate 43C is fixed to the two wedges 40 of the second emergency stop device 22. It is fixed and disposed in the second groove 60C.

  In this way, the two pairs of wedges 40 are fixed to the first plate 43B and the second plate 43C, respectively, and the first groove portion 60B and the second groove portion 60C at both ends of the shaft 30 are the first and second grooves 40C, respectively. By simply pushing up the plate 43B and the second plate 43C in the Z1 direction, the two pairs of wedges 40 can be simultaneously brought into contact with both surfaces of the guide rail 6 to obtain a stable and reliable braking force. Can do. For this reason, since it is possible to unify the parts of the wedge push-up cam and the shaft for lifting the two pairs of wedges 40, the structure is simplified by further reducing the number of parts. The elevator safety device 20 has a simple structure and can exhibit a stable braking force by rotating the shaft 30.

  For emergency stop of the car, the rotating shaft 30 simultaneously transmits the force on the governor 19 side to the two wedges 40 of the first emergency stop device 21 and the two wedges 40 of the second emergency stop device 22. In addition, since each wedge can be brought into contact with the guide rail at the same time, the safety can be stably braked, and a safety link mechanism with a small number of parts can be configured.

  The elevator safety device according to the present invention includes a first emergency stop device provided on both sides of a car for generating a force caused by a relative motion between the governor rope suspended from the governor of the elevator and the car. To the two wedges of the first emergency stop device and the corresponding guide rails between the two wedges of the first emergency stop device and the two wedges of the second emergency stop device. Is a safety device for an elevator that stops the vehicle. The elevator safety device includes a shaft that has one end portion disposed in the first emergency stop device and the other end portion disposed in the second emergency stop device, and a rotatable shaft. Relative motion of the governor rope and the car by connecting the wedge push-up cam that pushes up the two wedges of the emergency stop device and the two wedges of the second emergency stop device, one side of the shaft and the governor rope The lever that transmits the force generated by the shaft to rotate the shaft, the switch operation cam that operates the power switch by rotating the shaft, and the shaft so that the shaft does not rotate below the force generated by the governor rope And a connecting spring.

  Thereby, the structure of the elevator is simple, and a safety device for an elevator that can exhibit a stable braking force by rotating the shaft can be provided.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.

  In the above-described embodiment of the present invention, the elevator safety device is provided on the lower beam of the elevator car. However, the elevator safety device is not limited to this and is provided on the counterweight side instead of the lower beam of the passenger car. May be.

  Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

It is a figure which shows the structural example of an elevator provided with 1st Embodiment of the safety device of the elevator of this invention. It is a figure which shows the safety device and lower beam of the elevator of FIG. It is a side view which shows operation | movement of a safety device of the elevator of FIG. 1, and a lower beam. It is a figure which shows 2nd Embodiment of the safety device of the elevator of this invention. It is a figure shown to the safety device and lower beam of the elevator of FIG. It is a figure which shows 3rd Embodiment of the safety device of the elevator of this invention. It is a figure which shows 4th Embodiment of the safety device of the elevator of this invention. It is a figure which shows 5th Embodiment of the safety device of the elevator of this invention. It is a figure which shows the safety device of the elevator of FIG. It is a figure which shows the structure of the elevator which has the safety device of the conventional elevator. It is a figure which shows the safety device of the conventional elevator. It is a figure which shows the conventional safety device of another elevator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator 2 Car 3 Rope 4 Hoisting machine 5 Hoistway 6 Guide rail 9 Lower beam 10 Governor rope 19 Governor 20 Elevator safety device 21 First emergency stop device 22 Second emergency stop device 30 Shaft 31 Two wedge push-ups Cam 32 Lever 33 Switch operation cam 34 Spring 40 A pair of wedges

Claims (5)

Forces resulting from the relative motion of the governor rope suspended from the governor of the elevator and the car are applied to the two wedges of the first emergency stop device provided on both sides of the car and the second emergency The vehicle is transmitted to the two wedges of the stop device, and the corresponding cage is sandwiched between the two wedges of the first emergency stop device and the two wedges of the second emergency stop device to stop the car. An elevator safety device,
A shaft that has one end side disposed in the first safety device and the other end side disposed in the second safety device and is rotatable;
A wedge push-up cam that is provided on the shaft and pushes up the two wedges of the first emergency stop device and the two wedges of the second emergency stop device by rotation of the shaft;
A lever that connects one side of the shaft and the governor rope, transmits a force generated due to relative motion of the governor rope and the car to the shaft, and rotates the shaft;
A switch operation cam for operating a power switch by rotating the shaft;
A spring connecting the shafts so that the shaft does not rotate below the force generated by the governor rope;
An elevator safety device comprising:   The two wedges of the first emergency stop device and the second emergency stop are provided at the end of the lever when the shaft rotates due to the force generated by the relative movement between the governor rope and the car. The elevator safety device according to claim 1, wherein a chamfering portion for pushing up the two wedges of the apparatus is provided, and the chamfering portion is used as the wedge pushing cam.   The elevator safety device according to claim 1 or 2, wherein the lever is configured as the switch operation cam that operates the power switch when the shaft rotates.   The elevator spring device according to any one of claims 1 to 3, wherein the spring is connected between the lever and a lower beam of the car.   A first groove is formed at one end of the shaft, a second groove is formed at the other end of the shaft, and is fixed to the two wedges of the first emergency stop device. 2. The elevator according to claim 1, further comprising: a first plate disposed, and a second plate fixed to the two wedges of the second emergency stop device and disposed in the second groove portion. Safety equipment.

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