WO2014020743A1 - エレベータの非常止め装置 - Google Patents
エレベータの非常止め装置 Download PDFInfo
- Publication number
- WO2014020743A1 WO2014020743A1 PCT/JP2012/069713 JP2012069713W WO2014020743A1 WO 2014020743 A1 WO2014020743 A1 WO 2014020743A1 JP 2012069713 W JP2012069713 W JP 2012069713W WO 2014020743 A1 WO2014020743 A1 WO 2014020743A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pressing
- emergency stop
- side braking
- elastic
- stop device
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
Definitions
- the present invention relates to an emergency stop device for an elevator for applying a braking force to an elevator body (for example, a car or a counterweight) to make the elevator body emergency stop.
- an elevator body for example, a car or a counterweight
- an emergency stop device for an elevator that applies a braking force to a lifting body by gripping a guide rail that guides the lifting body with a pair of brake elements in order to make an emergency stop of the lifting body.
- the pair of brakes are displaced upward with respect to the support while being guided by the inclined portion of the support attached to the elevating body, thereby approaching the guide rail from both sides and gripping the guide rail. Yes.
- an adjustment bolt is provided at the upper end of the brake element, and the amount of protrusion of the adjustment bolt from the upper end of the brake element is adjusted, thereby supporting the support body.
- an emergency stop device for an elevator that adjusts the upper limit position of the brake against the above (for example, see Patent Document 2).
- JP 2008-290832 A Japanese Patent Laid-Open No. 62-222990
- the magnitude of the braking force applied to the lifting body by the emergency stop device cannot be adjusted during operation of the elevator, and the emergency stop device does not operate during operation of the elevator.
- the magnitude of the braking force applied to the lifting body is constant.
- the magnitude of the load borne by the emergency stop device depends on, for example, fluctuations in the number of passengers riding on the lifting body or the breakage of the main rope that suspends the lifting body. Fluctuates greatly during operation.
- the magnitude of the braking force applied to the lifting body during operation of the emergency stop device is constant, even though the load applied by the emergency stop device varies.
- the performance greatly varies depending on the state of the elevator, and depending on the state of the elevator, the lifting body may be decelerated abruptly and give a large impact to the lifting body.
- the present invention has been made to solve the above-described problems, and is an emergency of an elevator that can make the magnitude of the braking force applied to the lifting body more appropriate regardless of the state of the elevator.
- the purpose is to obtain a stop device.
- the emergency stop device for an elevator is provided with an inclination guide portion that is inclined with respect to a guide rail that guides the lifting body, a support body provided on the lifting body, a receiving side braking body provided on the support body, an inclination
- the pressure-side brake body that holds the guide rail with the receiving-side brake body, and the displacement of the pressure-side brake body upward with respect to the support body
- the elastic body for adjustment that generates an elastic restoring force against the gripping force is provided, and when the guide rail is gripped between the receiving side braking body and the pressing side braking body, the pressing force is applied to the supporting body by the pressing side braking body.
- the larger the displacement is, the larger the elastic restoring force of the adjustment elastic body is, the larger the displacement of the pressing-side braking body is with respect to the support body.
- the emergency stop device for an elevator when the braking operation of the emergency stop device is performed, the amount of upward displacement of the pressing-side brake body is adjusted according to the magnitude of the burden load of the emergency stop device. be able to. Thereby, the magnitude
- FIG. 2 is an enlarged view showing a state where the emergency stop device of FIG. 1 is performing a braking operation.
- FIG. 3 is an enlarged view showing a state where the emergency stop device of FIG. 2 is performing a braking operation.
- FIG. 1 is a block diagram showing an elevator according to Embodiment 1 of the present invention.
- a pair of car guide rails 2 and a pair of counterweight guide rails (not shown) are installed in the hoistway 1.
- a car (elevating body) 3 is provided between the pair of car guide rails 2 so as to be movable up and down, and a counterweight 4 is provided between the pair of counterweight guide rails so as to be raised and lowered.
- the hoisting machine 5 is a driving device that generates a driving force for moving the car 3 and the counterweight 4 up and down.
- the hoisting machine 5 includes a hoisting machine main body (driving device main body) 7 including a motor, and a driving sheave 8 provided in the hoisting machine main body 7 and rotated by the hoisting machine main body 7. Yes.
- the deflecting wheel 6 is arranged away from the driving sheave 8 in the horizontal direction.
- a plurality of suspension bodies 9 for suspending the car 3 and the counterweight 4 are wound around the driving sheave 8 and the deflector 6.
- the suspension body 9 for example, a rope or a belt is used.
- the car 3 is moved up and down in the hoistway 1 while being guided by the car guide rails 2 by the rotation of the driving sheave 8.
- the counterweight 4 is moved up and down in the hoistway 1 in the direction opposite to the car 3 while being guided by each counterweight guide rail by the rotation of the driving sheave 8.
- a pair of emergency stop devices 11 that provide braking force to the car 3 when the speed of the car 3 becomes excessive (abnormal) are provided individually below the pair of car guide rails 2 below the car 3. Yes.
- a pair of emergency stop device 11 is comprised so that it may mutually interlock
- One of the pair of safety devices 11 is provided with an operation lever (not shown).
- a governor rope (not shown) is connected to the operation lever.
- the governor rope is wound around a governor sheave (not shown) of a governor installed at the upper part of the hoistway 1.
- the governor grips the governor rope when the rotational speed of the governor sheave becomes excessive (abnormal).
- the operation lever is operated when the governor rope is gripped by the governor and the car 3 is displaced with respect to the governor rope.
- Each emergency stop device 11 performs a braking operation to grip each car guide rail 2 individually by operating the operation lever.
- a braking force is applied to the car 3, and the car 3 is decelerated and stopped in an emergency.
- the force with which the emergency stop device 11 grips the car guide rail 2 (the gripping force of the emergency stop device 11) F is a constant deceleration (for example, 0.6 G) of 1G (G: gravitational acceleration) or less, and the car 3 decelerates. To be adjusted.
- FIG. 2 is a block diagram showing the elevator when the suspension body 9 is broken while the passenger 12 is on the car 3 in FIG.
- FIG. 2 shows a state in which the car 3 is full of passengers 12.
- the car 3 is accelerated by gravity, and the descending speed of the car 3 is increased.
- the operation lever of the emergency stop device 11 is operated by gripping the governor rope by the governor. Thereby, the braking operation of the emergency stop device 11 is performed.
- the emergency stop device 11 bears not only the load of the passenger 12 in the car 3 but also all the loads of the car 3 itself. Accordingly, the state shown in FIG. 2 in which the suspension body 9 is broken and the car 3 is full of passengers 12 is a high load state in which the load on the emergency stop device 11 is maximized during the braking operation. It has become.
- the state shown in FIG. 1 is a state where the suspension body 9 is not broken and the passenger 12 is not on the car 3.
- the load W1 borne by the device 11 is significantly smaller than the load W2 borne by the emergency stop device 11 when the braking operation of the emergency stop device 11 is performed in the state shown in FIG. 2 (W1 ⁇ W2). Therefore, the state shown in FIG. 1 in which the suspension body 9 is not broken and the passenger 12 is not on the car 3 is a low burden load that minimizes the burden load of the emergency stop device 11 during the braking operation. It is in a state.
- the load W borne by the emergency stop device 11 when the braking operation of the emergency stop device 11 is performed is larger when the suspension body 9 is broken than when the suspension body 9 is not broken. Therefore, the larger the load of the passenger 12 in the car 3, the larger the load.
- the load W borne by the emergency stop device 11 when the braking operation of the emergency stop device 11 is performed varies depending on the magnitude of the load in the car 3 and whether or not the suspension body 9 is broken.
- FIG. 3 shows the load W of the safety device 11 when the car 3 is decelerated at a constant deceleration (for example, 0.6 G) by the braking operation of the safety device 11 of FIG. 3 is a graph showing a relationship with gripping force F.
- the gripping force F of the emergency stop device 11 is changed according to the change in the load W of the emergency stop device 11, so that deceleration is performed by the braking operation of the emergency stop device 11.
- the deceleration of the car 3 is kept constant. Therefore, in the emergency stop device 11, the magnitude of the gripping force (the gripping force corresponding to the burden load W2) F2 at the time of the braking operation in the high load load state is large.
- the gripping force corresponding to the load W1) is larger than the magnitude of F1.
- FIG. 4 is an enlarged view showing a state where the safety device 11 of FIG. 1 is performing a braking operation.
- FIG. 5 is an enlarged view showing a state where the safety device 11 of FIG. 2 is performing a braking operation.
- an emergency stop device 11 is interlocked with an emergency stop frame (support) 21 fixed to the lower end portion of the car 3, a receiving brake 22 provided on the emergency stop frame 21, and an operation lever. Avoid the pressing-side braking body 23 that can grip the car guide rail 2 with the side-side braking body 22, the adjusting elastic body 24 provided at the upper end of the pressing-side braking body 23, and the adjusting elastic body 24. And a stopper 25 provided at the upper end portion of the pressing-side braking body 23.
- the emergency stop frame 21 has an inclined guide portion 31 and a support receiving portion 32 that are provided apart from each other in the horizontal direction.
- the car guide rail 2 is passed through a space between the inclined guide portion 31 and the support receiving portion 32.
- the inclined guide portion 31 is inclined with respect to the support receiving portion 32 so that the distance from the support receiving portion 32 is continuously narrowed upward.
- the inclination guide part 31 also inclines so that the space
- the receiving-side braking body 22 is arranged in a space between the car guide rail 2 and the support receiving portion 32.
- a plurality of gripping elastic bodies 33 are provided between the receiving brake body 22 and the support receiving portion 32.
- the gripping elastic body 33 generates an elastic restoring force by the displacement of the receiving-side braking body 22 in the direction approaching the support receiving portion 32.
- the magnitude of the elastic restoring force of the gripping elastic body 33 increases as the receiving-side braking body 22 approaches the support receiving portion 32.
- the pressing side braking body 23 is disposed in a space between the car guide rail 2 and the inclined guide portion 31. At a normal time when the braking operation of the emergency stop device 11 is not performed, the position of the pressing-side braking body 23 is a normal position away from the car guide rail 2. When the speed of the car 3 is excessive and the operation lever is operated, the pressing-side braking body 23 is displaced upward with respect to the emergency stop frame 21 while being guided from the normal position to the inclined guide portion 31.
- the pressing-side braking body 23 is displaced in the direction approaching the support receiving portion 32 by being displaced upward with respect to the emergency stop frame 21 while being guided from the normal position to the inclined guiding portion 31, and thus the receiving-side braking body 22.
- the car guide rail 2 is gripped between
- the emergency stop device 11 generates a braking force on the car 3 by gripping the car guide rail 2 between the pressing side braking body 23 and the receiving side braking body 22.
- the pressing-side braking body 23 After the car guide rail 2 is gripped between the pressing-side braking body 23 and the receiving-side braking body 22, when the pressing-side braking body 23 is displaced further upward with respect to the emergency stop frame 21, the inclination guide portion 31.
- the distance between the car guide rail 2 and the car guide rail 2 is increased by the pressing side braking body 23.
- the receiving-side braking body 22 is displaced in a direction approaching the support receiving portion 32, and the elastic restoring force of the gripping elastic body 33 is increased.
- the magnitude of the gripping force F of the emergency stop device 11 increases as the elastic restoring force of the gripping elastic body 33 increases.
- the magnitude of the gripping force F of the emergency stop device 11 (the gripping force when gripping the car guide rail 2 between the pressing-side braking body 23 and the receiving-side braking body 22) F is large. It becomes larger as it is displaced upward with respect to the stop frame 21.
- a restraining portion 34 is fixed to the emergency stop frame 21 so as to be positioned above the pressing side brake body 23.
- the adjusting elastic body 24 is disposed between the pressing-side braking body 23 and the restricting portion 34.
- an elastic body for example, rubber or the like
- an elastic body for example, a coil spring or a dish
- Springs, ring springs, etc. are used as the adjustment elastic body 24 and the gripping elastic body 33.
- the adjustment elastic body 24 When the pressing side brake body 23 is in the normal position, the adjustment elastic body 24 is separated from the restricting portion 34 downward.
- the elastic body 24 for adjustment is formed between the pressing side braking body 23 and the regulating portion 34 after the pressing side braking body 23 is displaced upward from the normal position with respect to the emergency stop frame 21 and hits the regulating portion 34. It is shortened between. Thereby, the elastic body 24 for adjustment generate
- the magnitude of the elastic restoring force of the adjustment elastic body 24 changes according to the amount of contraction of the adjustment elastic body 24.
- the magnitude of the elastic restoring force of the adjusting elastic body 24 is such that the pressing-side braking body 23 is displaced upward with respect to the emergency stop frame 21 (that is, the pressing-side braking body 23 approaches the restricting portion 34). The larger it is displaced).
- the pressing side brake body 23 is displaced upward with respect to the emergency stop frame 21 against the elastic restoring force of the adjustment elastic body 24.
- the force that displaces the pressing brake body 23 upward with respect to the emergency stop frame 21 changes according to the magnitude of the burden load W of the emergency stop device 11 during the braking operation of the emergency stop device 11. Therefore, the amount of upward displacement of the pressing brake 23 relative to the emergency stop frame 21 increases as the burden load W of the emergency stop device 11 increases.
- the magnitude of the gripping force F of the safety device 11 also increases as the burden load W of the safety device 11 increases.
- the stopper 25 is sandwiched between the restricting portion 34 and the pressing-side braking body 23 when the pressing-side braking body 23 reaches a predetermined upper limit position with respect to the emergency stop frame 21, so that the stopper 25 moves upward. Prevent displacement. This prevents the pressing-side braking body 23 from being displaced upward from the predetermined upper limit position, and prevents the gripping force F of the emergency stop device 11 from becoming too large.
- the stopper 25 is an inelastic cylindrical member surrounding the adjustment elastic body 24. The height dimension of the stopper 25 is smaller than the height dimension of the adjustment elastic body 24.
- the restricting portion 34 has both a function of an elastic body receiving portion that receives the adjusting elastic body 24 and a function of a stopper receiving portion that receives the stopper 25.
- the operation lever When the car 3 is displaced with respect to the governor rope, the operation lever is operated. As a result, the pressure-side braking body 23 is displaced upward toward the restricting portion 34 together with the adjusting elastic body 24 and the stopper 25 while being guided by the inclination guide portion 31. As a result, the car guide rail 2 is gripped between the pressing-side braking body 23 and the receiving-side braking body 22, and the adjustment elastic body 24 is sandwiched between the regulating portion 34 and the pressing-side braking body 23.
- the magnitude of the elastic restoring force of the adjusting elastic body 24 is such that the pressing-side braking body 23 moves upward.
- the larger the displacement the larger.
- the pressing-side braking body 23 is displaced upward by a force having a magnitude corresponding to the burden load W of the safety device 11. Therefore, the position where the upward displacement of the pressing-side braking body 23 stops becomes an upper position as the magnitude of the burden load W of the emergency stop device 11 increases.
- the position where the upward displacement of the pressing-side braking body 23 stops is adjusted to a position according to the magnitude of the burden load W of the emergency stop device 11 by the elastic restoring force of the adjusting elastic body 24.
- the magnitude of the gripping force F of the safety device 11 is adjusted according to the magnitude of the burden load W of the safety device 11.
- the gripping force F when gripping the car guide rail 2 between the pressing side braking body 23 and the receiving side braking body 22 is such that the pressing side braking body 23 is very emergency.
- the magnitude of the elastic restoring force of the adjusting elastic body 24 against the upward displacement of the pressing-side braking body 23 increases as the displacement toward the retaining frame 21 increases. 21 is larger as it is displaced upward, so when the braking operation of the emergency stop device 11 is performed, the amount of upward displacement of the pressing-side braking body 23 is the magnitude of the burden load W of the emergency stop device 11. It can be adjusted accordingly.
- the elevator During the operation, the magnitude of the gripping force F of the safety device 11 with respect to the car guide rail 2 can be adjusted according to the magnitude of the burden load W of the safety device 11. Therefore, irrespective of the state of the elevator, the magnitude of the braking force applied to the car 3 can be made more appropriate, and it is possible to prevent the car 3 from being given a large impact during the braking operation of the emergency stop device 11.
- the pressing-side braking body 23 is blocked by the stopper 25 when it reaches a predetermined upper limit position with respect to the emergency stop frame 21, the gripping force F of the emergency stop device 11 with respect to the car guide rail 2 becomes too large. Therefore, it is possible to more reliably prevent the car 3 from being subjected to a large impact during the braking operation of the emergency stop device 11.
- the emergency stop frame 21 is provided with a restricting portion 34 positioned above the pressing-side braking body 23, and the adjustment elastic body 24 is contracted between the pressing-side braking body 23 and the restricting portion 34. Since the elastic restoring force is generated, the elastic restoring force having a magnitude corresponding to the magnitude of the burden load W of the safety device 11 can be generated in the adjusting elastic body 24 with a simple configuration.
- the adjustment elastic body 24 is provided on the pressing-side brake body 23.
- the adjustment elastic body 24 may be provided on the restriction portion 34. Even in this case, the adjustment elastic body 24 can be contracted between the pressing-side braking body 23 and the regulating portion 34, and an elastic restoring force having a magnitude corresponding to the magnitude of the burden load W of the emergency stop device 11. Can be generated in the adjusting elastic body 24.
- the stopper 25 is provided on the pressing-side braking body 23, but the stopper 25 may be provided on the restricting portion 34. Even in this case, the stopper 25 is sandwiched between the pressing-side braking body 23 and the restricting portion 34, and the upward displacement of the pressing-side braking body 23 can be prevented.
- the restricting portion 34 is provided on the emergency stop frame 21, but the bottom of the car 3 may be the restricting portion 34. Even in this case, the adjustment elastic body 24 can be contracted between the pressing-side braking body 23 and the restricting portion 34, and the stopper 25 is received by the restricting portion 34 so that the pressing-side braking body 23 is displaced upward. Can be prevented.
- the stopper 25 is a cylindrical member. However, as long as the stopper 25 is disposed avoiding the adjustment elastic body 24, the stopper 25 may have any shape.
- the stopper 25 is provided on the pressing-side braking body 23.
- the stopper 25 may not be provided as long as the adjusting elastic body 24 can receive the force to be displaced upward.
- FIG. FIG. 6 is a configuration diagram showing a state in which the braking operation of the emergency stop device for an elevator according to Embodiment 2 of the present invention is performed when the elevator is in a low load state.
- FIG. 7 is a configuration diagram showing a state where the braking operation of the emergency stop device for the elevator shown in FIG. 6 is performed when the elevator is in a high load state.
- the low-load state is a state where the suspension body 9 that suspends the car 3 is not broken and the passenger 12 is not on the car 3, and the high-load state is that the car 3 is suspended.
- the suspended body 9 is broken and the car 3 is full of passengers 12.
- the bottom of the car 3 is a stopper receiving portion 41 that receives the upward displacement of the stopper 25.
- a spring receiving portion (elastic body receiving portion) 42 is fixed to the emergency stop frame 21 and is positioned above the pressing brake body 23 and below the stopper receiving portion 41.
- the elastic body 24 for adjustment and the stopper 25 are held by the spring receiving portion 42.
- the stopper 25 includes a bolt 43 that can be displaced in the vertical direction with respect to the spring receiving portion 42, and a stop plate 44 that is attached to the lower end portion of the bolt 43.
- the bolt 43 has a screw shaft portion 45 penetrating the spring receiving portion 42 vertically and a head portion (engagement portion) 46 fixed to the upper end portion of the screw shaft portion.
- the stop plate 44 is attached to the bolt 43 by being screwed to the lower end portion of the screw shaft portion 45.
- the adjusting elastic body 24 is contracted between the spring receiving portion 42 and the stopper plate 44.
- the stopper 25 is urged downward with respect to the spring receiving portion 42 by the elastic restoring force of the adjusting elastic body 24.
- the downward displacement of the stopper 25 with respect to the spring receiving portion 42 is restricted by the head portion 46 of the bolt 43 engaging the spring receiving portion 42.
- the pressing-side braking body 23 is provided with an adjustment bolt 47 that protrudes upward from the upper end portion of the pressing-side braking body 23 and a set nut 48 that is screwed to the adjustment bolt 47.
- the protrusion amount of the adjustment bolt 47 from the upper end portion of the pressing side brake body 23 is adjusted by adjusting the screwing amount of the adjustment bolt 47 to the pressing side brake body 23.
- the position of the adjusting bolt 47 with respect to the pressing-side braking body 23 is fixed by tightening the locking nut 48.
- the adjustment bolt 47 is separated downward from the stopper 25 when the pressing-side braking body 23 is in the normal position, and when the pressing-side braking body 23 is displaced upward with respect to the emergency stop frame 21, the stopper 25 is stopped. While hitting the bottom surface of the plate 44, the stopper 25 is pushed up while the elastic body for adjustment 24 is contracted. That is, the adjustment elastic body 24 is contracted between the pressing side braking body 23 and the spring receiving portion 42 by pushing up the stop plate 44 by the adjusting bolt 47 displaced upward together with the pressing side braking body 23. An elastic restoring force is generated against the upward displacement of the pressing brake body 23 with respect to the emergency stop frame 21.
- the stopper receiving portion 41 is configured to receive the head portion 46 of the stopper 25 when the pressing-side braking body 23 reaches a predetermined upper limit position with respect to the emergency stop frame 21.
- the upward displacement of the pressing-side braking body 23 with respect to the emergency stop frame 21 is prevented when the stopper receiving portion 41 receives the stopper 25. That is, the upward displacement of the pressing brake 23 is blocked by the stopper 25 when a predetermined upper limit position with respect to the emergency stop frame 21 is reached.
- the emergency stop frame 21 is retained by the elastic restoring force of the adjustment elastic body 24 while the stopper 25 is separated from the stopper receiving portion 41.
- the upward displacement of the pressing-side braking body 23 with respect to is suppressed.
- the amount of upward displacement of the pressing brake body 23 with respect to the emergency stop frame 21 is reduced, and the magnitude of the gripping force F of the emergency stop device 11 depends on the magnitude of the burden load W1 of the emergency stop device 11. It is getting smaller.
- the magnitude of the elastic restoring force of the elastic elastic body 24 for adjustment is set to the pressure-side braking body 23. Therefore, the upward displacement amount of the pressing-side brake member 23 relative to the emergency stop frame 21 is adjusted according to the magnitude of the burden load W of the emergency stop device 11. be able to. Therefore, even if the magnitude of the burden load W of the safety device 11 fluctuates, the magnitude of the gripping force F of the safety device 11 with respect to the car guide rail 2 during the operation of the elevator is changed to the burden load of the safety device 11. It can be adjusted according to the size of W. Even if the adjustment elastic body 24 and the stopper 25 cannot be attached to the upper end portion of the pressing-side braking body 23, the adjustment elastic body 24 and the stopper 25 can be provided in the emergency stop device 11.
- the adjustment bolt 47 and the set nut 48 are provided at the upper end portion of the pressure-side braking body 23, but the adjustment side bolt 47 and the set nut 48 are eliminated, and the pressure-side brake body 23 becomes the stopper 25. You may make it hit directly.
- the stopper receiving portion 41 is the bottom of the car 3 and the spring receiving portion 42 is provided on the emergency stop frame 21.
- each of the stopper receiving portion 41 and the spring receiving portion 42 is connected to the emergency stop frame 21. 21 may be provided, or each of the stopper receiving portion 41 and the spring receiving portion 42 may be provided in the car 3.
- FIG. 8 is a configuration diagram showing a state in which the braking operation of the emergency stop device for an elevator according to Embodiment 3 of the present invention is performed when the elevator is in a low load state.
- FIG. 9 is a configuration diagram showing a state where the braking operation of the emergency stop device for the elevator shown in FIG. 8 is performed when the elevator is in a high load state.
- the emergency stop frame 21 is provided with a pressing mechanism 51 that presses the adjustment elastic body 24 in accordance with the upward displacement of the pressing brake 23.
- the pressing mechanism portion 51 is disposed at a position distant from the car guide rail 2 with respect to the emergency stop frame 21 and an adjusting body 52 that can be displaced in the vertical direction (a direction along the car guide rail 2). And a pressing body 53 that is displaced in the horizontal direction (the direction in which the distance from the car guide rail 2 changes) with respect to the emergency stop frame 21 in accordance with the vertical displacement of the adjustment body 52 with respect to the emergency stop frame 21. is doing.
- the emergency stop frame 21 includes an adjustment body guide portion 54 that guides the displacement of the adjustment body 52 in the vertical direction, and an elastic body receiving portion 55 that is disposed at a position farther from the car guide rail 2 than the pressing body 53. It is fixed.
- the adjusting body 52 is disposed between the stopper receiving portion 41 that is the bottom of the car 3 and the pressing-side braking body 23. Further, the adjustment body 52 is prevented from being displaced upward by the engagement with the stopper receiving portion 41 (that is, when the stopper receiving portion 41 receives the adjustment body 52), and is engaged with the upper end portion of the inclined guide portion 31. This prevents downward displacement. Therefore, the adjustment body 52 has a range between the adjustment body upper limit position engaged with the stopper receiving portion 41 and the adjustment body lower limit position engaged with the upper end portion of the inclination guide portion 31. While being guided by 54, it is displaced with respect to the emergency stop frame 21.
- the adjustment bolt 47 provided at the upper end portion of the pressing-side braking body 23 is separated downward from the adjusting body 52 when the pressing-side braking body 23 is in the normal position, and the pressing-side braking body 23 becomes the emergency stop frame 21. On the other hand, it is displaced upward to hit the bottom surface of the adjustment body 52 and push up the adjustment body 52.
- the upward displacement of the pressing side brake body 23 is caused by the adjustment body 52 engaging with the stopper receiving portion 41 when the pressing side braking body 23 reaches a predetermined upper limit position (that is, the stopper receiving portion 41 is adjusted). Blocked by receiving body 52). Therefore, the adjusting body 52 has a function as a stopper that prevents the upward displacement of the pressing-side braking body 23 at a predetermined upper limit position.
- An adjustment body inclined portion 52 a that is inclined with respect to the car guide rail 2 is provided on the pressing body 53 side of the adjustment body 52.
- the adjusting body inclined portion 52a is inclined with respect to the car guide rail 2 so that the distance from the car guide rail 2 is continuously narrowed upward.
- the pressing body 53 is provided with a pressing body inclined portion 53a that contacts the adjusting body inclined portion 52a.
- the pressing body inclined portion 53a is inclined with respect to the car guide rail 2 at the same inclination angle as the adjusting body inclined portion 52a.
- the pressing body 53 is guided in the horizontal direction with respect to the emergency stop frame 21 between the bottom portion of the car 3 and the upper end portion of the inclined guide portion 31.
- the pressing body 53 approaches the elastic body receiving portion 55 by being displaced in a direction away from the car guide rail 2, and is separated from the elastic body receiving portion 55 by being displaced in a direction approaching the car guide rail 2.
- the adjustment elastic body 24 is contracted between the pressing body 53 and the elastic body receiving portion 55. Thereby, the direction of the elastic restoring force of the adjustment elastic body 24 with respect to the emergency stop frame 21 is a horizontal direction different from the displacement direction of the adjustment body 52.
- An engagement bolt 56 that passes through the adjustment elastic body 24 and the elastic body receiving portion 55 is screwed into the pressing body 53. The displacement of the pressing body 53 in the direction approaching the car guide rail 2 is prevented by the engagement bolt 56 engaging the elastic body receiving portion 55.
- the adjustment body 52 is pushed up by the adjustment bolt 47 and is pushed upward with respect to the emergency stop frame 21 against the elastic restoring force of the adjustment elastic body 24 while pushing out the pressing body 53 in the horizontal direction by the adjustment body inclined portion 52a. Is displaced.
- the pressing body 53 is displaced in a direction away from the car guide rail 2 while pressing and contracting the adjusting elastic body 24 according to the upward displacement of the adjusting body 52.
- the magnitude of the elastic restoring force of the adjustment elastic body 24 increases as the adjustment body 52 is displaced upward with respect to the emergency stop frame 21 (that is, the adjustment body 52 approaches the adjustment body upper limit position). Become.
- the amount of displacement of the pressing body 53 with respect to the amount of displacement of the adjusting body 52 becomes smaller as the inclination angle of the adjusting body inclined portion 52a and the pressing body inclined portion 53a with respect to the car guide rail 2 becomes steeper, and with respect to the car guide rail 2.
- the adjustment body inclination portion 52a and the pressing body inclination portion 53a become larger as the inclination angles become gentler.
- the displacement amount of the pressing body 53 in the horizontal direction is increased in the vertical direction of the adjusting body 52 by adjusting the inclination angles of the adjusting body tilting portion 52 a and the pressing body tilting portion 53 a with respect to the car guide rail 2. The amount of displacement is adjusted.
- the relationship between the amount of contraction of the adjusting elastic body 24 (the magnitude of the elastic restoring force of the adjusting elastic body 24) and the amount of displacement of the adjusting body 52 indicates that the adjusting body inclined portion 52a and the pressing body are inclined with respect to the car guide rail 2. It is adjusted by adjusting the inclination angle of the portion 53a.
- the amount of displacement of the pressing body 53 in the horizontal direction is smaller than the amount of displacement of the adjustment body 52 in the vertical direction.
- the emergency stop frame is retained by the elastic restoring force of the adjustment elastic body 24 while the adjustment body 52 is separated from the stopper receiving portion 41.
- the upward displacement of the pressing-side braking body 23 with respect to 21 is suppressed.
- the amount of upward displacement of the pressing brake body 23 with respect to the emergency stop frame 21 is reduced, and the magnitude of the gripping force F of the emergency stop device 11 depends on the magnitude of the burden load W1 of the emergency stop device 11. It is getting smaller.
- the elastic restoring force of the adjusting elastic body 24 cannot suppress the upward displacement of the pressing side braking body 23, and the adjustment is performed.
- the body 52 reaches the stopper receiving portion 41, and the pressing-side braking body 23 reaches a predetermined upper limit position.
- the amount of upward displacement of the pressing brake 23 relative to the emergency stop frame 21 is maximized, and the magnitude of the gripping force F of the emergency stop device 11 is the maximum value in the gripping force setting range of the emergency stop device 11. It has become.
- Other configurations and operations are the same as those in the second embodiment.
- the pressing body 53 is displaced in a direction away from the car guide rail 2 while pressing and contracting the adjusting elastic body 24 according to the upward displacement of the adjusting body 52.
- the displacement amount of the pressing body 53 With respect to the displacement amount of the adjusting body 52, the relationship between the magnitude of the elastic restoring force of the adjusting elastic body 24 and the displacement amount of the pressing-side braking body 23 can be adjusted. .
- a plurality of combinations can be applied to the relationship between the magnitude of the elastic restoring force of the adjusting elastic body 24 and the amount of displacement of the pressing-side braking body 23, thereby widening the range of specifications required for the emergency stop device 11.
- the adjusting body 52 is provided with an adjusting body inclined portion 52a that is inclined with respect to the car guide rail 2, and is displaced upward with respect to the emergency stop frame 21 while pressing the pressing body 53 with the adjusting body inclined portion 52a. Therefore, it is possible to easily adjust the relationship between the magnitude of the elastic restoring force of the adjusting elastic body 24 and the displacement amount of the pressing-side braking body 23 simply by adjusting the inclination angle of the adjusting body inclined portion 52a with respect to the car guide rail 2. can do.
- the adjustment bolt 47 and the set nut 48 are provided at the upper end of the pressing side brake body 23, but the adjustment bolt 47 and the set nut 48 are eliminated, and the press side brake body 23 is adjusted to the adjustment body 52. You may make it hit directly.
- the stopper receiving portion 41 is the bottom of the car 3, but the stopper receiving portion 41 may be provided on the emergency stop frame 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1によるエレベータを示す構成図である。図において、昇降路1内には、一対のかごガイドレール2及び一対の釣合おもりガイドレール(図示せず)が設置されている。一対のかごガイドレール2間にはかご(昇降体)3が昇降可能に設けられ、一対の釣合おもりガイドレール間には釣合おもり4が昇降可能に設けられている。
図6は、エレベータの状態が低負担荷重状態であるときに、この発明の実施の形態2によるエレベータの非常止め装置の制動動作が行われている状態を示す構成図である。また、図7は、エレベータの状態が高負担荷重状態であるときに、図6のエレベータの非常止め装置の制動動作が行われている状態を示す構成図である。なお、低負担荷重状態は、かご3を吊り下げる懸吊体9が破断しておらず、かつかご3に乗客12が乗車していない状態であり、高負担負荷状態は、かご3を吊り下げる懸吊体9が破断し、かつかご3が乗客12で満員となっている状態である。
図8は、エレベータの状態が低負担荷重状態であるときに、この発明の実施の形態3によるエレベータの非常止め装置の制動動作が行われている状態を示す構成図である。また、図9は、エレベータの状態が高負担荷重状態であるときに、図8のエレベータの非常止め装置の制動動作が行われている状態を示す構成図である。図において、非常止め枠21には、押圧側制動体23の上方への変位に応じて調整用弾性体24を押圧する押圧機構部51が設けられている。
Claims (4)
- 昇降体を案内するガイドレールに対して傾斜する傾斜案内部が設けられ、上記昇降体に設けられた支持体、
上記支持体に設けられた受け側制動体、
上記傾斜案内部に案内されながら上記支持体に対して上方へ変位されることにより、上記受け側制動体との間で上記ガイドレールを把持する押圧側制動体、及び
上記押圧側制動体の上記支持体に対する上方への変位に逆らう弾性復元力を発生する調整用弾性体
を備え、
上記受け側制動体と上記押圧側制動体との間で上記ガイドレールを把持するときの把持力の大きさは、上記押圧側制動体が上記支持体に対して上方へ変位されるほど大きくなり、
上記調整用弾性体の弾性復元力の大きさは、上記押圧側制動体が上記支持体に対して上方へ変位されるほど大きくなるエレベータの非常止め装置。 - 上記支持体に対する所定の上限位置に上記押圧側制動体が達したときに上記押圧側制動体の上方への変位を阻止するストッパ
をさらに備えている請求項1に記載のエレベータの非常止め装置。 - 上記昇降体及び上記支持体のいずれかには、上記押圧側制動体の上方に位置する弾性体受け部が設けられ、
上記調整用弾性体は、上記押圧側制動体と上記弾性体受け部との間で縮められることにより上記弾性復元力を発生する請求項1又は請求項2に記載のエレベータの非常止め装置。 - 上記押圧側制動体に押されながら上記支持体に対して上方へ変位される調整体と、上記調整体の上方への変位に応じて上記ガイドレールから離れる方向へ変位されることにより上記調整用弾性体を押し縮める押圧体とを有する押圧機構部
をさらに備え、
上記調整用弾性体は、上記押圧体で縮められることにより上記弾性復元力を発生する請求項1又は請求項2に記載のエレベータの非常止め装置。
Priority Applications (7)
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KR1020157004187A KR101827068B1 (ko) | 2012-08-02 | 2012-08-02 | 엘리베이터의 비상 멈춤 장치 |
JP2014527912A JP5955388B2 (ja) | 2012-08-02 | 2012-08-02 | エレベータの非常止め装置 |
PCT/JP2012/069713 WO2014020743A1 (ja) | 2012-08-02 | 2012-08-02 | エレベータの非常止め装置 |
BR112015001696A BR112015001696A2 (pt) | 2012-08-02 | 2012-08-02 | dispositivo de parada de emergência para elevador |
CN201280075086.3A CN104507842B (zh) | 2012-08-02 | 2012-08-02 | 电梯的紧急停止装置 |
EP12882341.6A EP2881353A4 (en) | 2012-08-02 | 2012-08-02 | EMERGENCY STOP DEVICE FOR ELEVATOR |
US14/419,119 US9586792B2 (en) | 2012-08-02 | 2012-08-02 | Emergency stop device for elevator |
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PCT/JP2012/069713 WO2014020743A1 (ja) | 2012-08-02 | 2012-08-02 | エレベータの非常止め装置 |
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WO2014020743A1 true WO2014020743A1 (ja) | 2014-02-06 |
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PCT/JP2012/069713 WO2014020743A1 (ja) | 2012-08-02 | 2012-08-02 | エレベータの非常止め装置 |
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US (1) | US9586792B2 (ja) |
EP (1) | EP2881353A4 (ja) |
JP (1) | JP5955388B2 (ja) |
KR (1) | KR101827068B1 (ja) |
CN (1) | CN104507842B (ja) |
BR (1) | BR112015001696A2 (ja) |
WO (1) | WO2014020743A1 (ja) |
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US20230159302A1 (en) * | 2021-11-25 | 2023-05-25 | Otis Elevator Company | Progressive elevator safety brake |
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CN105035907B (zh) * | 2015-08-28 | 2018-10-23 | 杭州沪宁电梯部件股份有限公司 | 一种自动调整制动力的装置 |
US10486939B2 (en) | 2015-09-27 | 2019-11-26 | Otis Elevator Company | Breaking system for a hoisted structure and method of controlling braking a hoisted structure |
JP6505249B2 (ja) * | 2015-11-26 | 2019-04-24 | 三菱電機株式会社 | エレベータかごの非常止め装置 |
US20170275136A1 (en) * | 2016-03-24 | 2017-09-28 | Home Conveyance Safety Ltd. | Emergency fall arresting system |
JP6570751B2 (ja) * | 2016-07-26 | 2019-09-04 | 三菱電機株式会社 | エレベータの非常止め装置 |
EP3620419A1 (en) * | 2018-09-07 | 2020-03-11 | KONE Corporation | Constant deceleration progressive safety gear system |
CN114249205A (zh) * | 2020-09-24 | 2022-03-29 | 湖南大举信息科技有限公司 | 一种用于多轿厢并行电梯的缓速器 |
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Also Published As
Publication number | Publication date |
---|---|
EP2881353A1 (en) | 2015-06-10 |
KR101827068B1 (ko) | 2018-02-07 |
CN104507842B (zh) | 2016-05-18 |
JP5955388B2 (ja) | 2016-07-20 |
US20150217971A1 (en) | 2015-08-06 |
BR112015001696A2 (pt) | 2017-07-04 |
CN104507842A (zh) | 2015-04-08 |
US9586792B2 (en) | 2017-03-07 |
JPWO2014020743A1 (ja) | 2016-07-11 |
EP2881353A4 (en) | 2016-03-30 |
KR20150038120A (ko) | 2015-04-08 |
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