WO2001051399A1 - Dispositif d'arret d'urgence d'ascenseur - Google Patents
Dispositif d'arret d'urgence d'ascenseur Download PDFInfo
- Publication number
- WO2001051399A1 WO2001051399A1 PCT/JP2001/000059 JP0100059W WO0151399A1 WO 2001051399 A1 WO2001051399 A1 WO 2001051399A1 JP 0100059 W JP0100059 W JP 0100059W WO 0151399 A1 WO0151399 A1 WO 0151399A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wedge
- elevator
- emergency stop
- elastic body
- stop device
- Prior art date
Links
Classifications
-
- 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 emergency stop of a car when the speed of ascent or descent of a car exceeds a legal speed, and is particularly applied to a high-speed elevator that exceeds 10 s.
- the present invention relates to a suitable elevator safety device.
- the governor 14 has a governor rope 15 connected to the safety link 17 of the car 20 in the middle, and the governor 14 rotates as the car moves up and down. ing.
- the lower part of the governor rope 15 is wound around a governor rope tensioning wheel 16, and a suitable tension is applied to the governor opening 15.
- the mouthpiece grip 19 incorporated in the governor 14 operates, and the governor rope 15 is gripped.
- the safety link 17 operates to stop the raising rod 2 of the lowering car 20 from lowering. That is, when viewed from the car 20 side, the lifting rod 2 rises and is connected to the lower end of the lifting rod 2, and in detail, the wedge-shaped body 3 shown in FIGS. A frictional force is generated between the guide rail 1 and the guide rail 1, and the car 20 is brought to an emergency stop.
- FIG. 12 is a front view showing an example of a conventional elevator safety device
- FIG. 13 is a sectional view taken along line BB of FIG.
- the emergency stop device 18 has its upper surface fixed to the lower beam of the cage 20.
- the upper plate 9A which is substantially square
- the lower plate 9B which is almost the same shape as the upper plate 9A and has a slightly thinner plate thickness, and which is made of angle iron which is welded up and down.
- a framework of the elevator safety device 18 is constituted by a pair of columns not shown.
- a U-shaped groove 9a into which the head of the guide rail 1 indicated by a dashed line is loosely fitted is provided at the center of the front surface of the upper plate 9A and the lower plate 9B. Is formed.
- a stepped portion 9 d is formed on the lower surface on both sides of the front end of the upper plate 9 A, and a substantially convex guide is formed on the upper surface on both sides of the front end of the lower plate 9 B.
- a receptacle 9b is formed on the outer upper surface of the guide receiver 9b.
- a horizontal stepped portion 9c is formed symmetrically with the stepped portion 9d of the upper plate 9A described above.
- a pair of guide plates 6 are provided on these stepped portions 9c and 9d. That is, the pair of guide plates 6 are formed in a substantially U-shape, and the engaging portions 6a and 6b are protrudingly provided on the upper and lower ends opposite to each other. Therefore, the locking portions 6a and 6b of the pair of guide plates 6 are inserted from outside the stepped portions 9c and 9d, and the opposing surfaces of the guide plates 6 are inclined with a wide lower space. are doing.
- a U-shaped groove 6c is formed on the outside of the left and right guide plates 6, and in this groove both ends of a U-shaped thick plate leaf spring 7 are formed as shown in FIG. It is fitting.
- a pair of pressing seats 8 are inserted in advance from inside. Most of the hemispherical portion of the head of the pressing seat 8 fits into a hemispherical recess formed above and below the groove 6 c of the guide plate 6, whereby the hemispherical portion is moved by the return force of the plate panel 7. The panel panel 7 is pressed by the concave portion, and thus maintains the posture.
- Reference numeral 2 denotes the above-mentioned lifting rod, which is manufactured from a steel strip.
- the lower end of the pulling rod 2 is connected to the lower end of a substantially trapezoidal wedge-shaped body 3 via a pin.
- a guide groove parallel to the outer slope is formed on the outer surface of the front and rear surfaces of the wedge-shaped body 3 as shown in FIG.
- guide grooves shown in FIG. 12 are formed on the front and rear surfaces on the opposite sides of the guide plates 6 described above.
- the guide groove formed in the guide plate 6 and the guide groove formed in the wedge-shaped body 3 described above have bending on both sides of a holding plate 4A formed in a substantially trough shape as shown in FIG. The parts are fitted. Shafts projecting from both ends of the roller 5A are inserted into several shaft holes formed in the center line of the front and rear holding plates 4A.
- the holding plate 4A is movable upward together with the roller 5A by a bent portion in which one side is fitted into a groove formed in the guide plate 6.
- the elevator safety device 18 is provided on the other side of the car, and may be attached to the counterweight.
- the governor rope 1 5 is gripped by the rope gripper 19 of the governor 14. Then, the lifting rod 2 stops before the car 20 and rises relatively to the car 20 and the guide plate 6. As a result, the wedge-shaped body 3 locked to the lower end of the lifting rod 2 rises with respect to the power 20 or the counterweight. Then, the opposing surfaces of the pair of wedge-shaped members 3 are pressed against the side surfaces of the head of the guide rail 1, sandwiching the guide rail 1 from both sides, and the car 20 or the counterweight stops.
- the roller 5A inserted into the holding plate 4A which rises together with the wedge-shaped body 3 reduces the friction between the wedge-shaped body 3 and the inner plate 6, smoothes the rising operation of the wedge-shaped body 3, and It is incorporated to prevent the pressing force from lowering.
- the coefficient of kinetic friction has a constant value determined by the material of the sliding material and the condition of the sliding surface, regardless of the sliding speed.However, in the region where the sliding speed exceeds 10 ms, the speed increases. It has been experimentally confirmed that the dynamic friction coefficient decreases.
- the pair of wedge-shaped members are pressed against the guide rail by a preset panel force, that is, the wedge-shaped member and the guide rail always slide with a constant pressing force.
- the change in the dynamic friction coefficient directly changes the braking force, and exceeds 10 m / S.
- emergency braking by the elevator emergency stop device has a high speed at the beginning of braking and a small friction coefficient as shown in Fig. 3A. For this reason, the deceleration is small, and immediately before stopping, the deceleration becomes large because the speed is low and the friction coefficient is large.
- the aforementioned Building Decree Enforcement Ordinance stipulates that the average deceleration during emergency braking is 0.35 G to 1.0 G, so immediately before stopping at emergency braking at a speed of 15 mZs or more The deceleration becomes very large, and the burden on passengers increases.
- An object of the present invention is to provide an elevator emergency stop device for keeping a deceleration of a high-speed elevator during emergency braking constant and for safely stopping a car. Disclosure of the invention
- an elevator emergency stop device provides a mechanism in which a wedge-shaped body has a dimension in a direction perpendicular to a surface sliding on a guide rail and a sliding member changed according to a braking force. It was prepared.
- An elevator emergency stop device includes a fixed portion having an outer slope portion of a wedge-shaped body and a wedge-shaped movable portion having a sliding member, wherein the movable portion is movable along an inner slope of the fixed portion;
- the upper part is configured to be engaged with the fixed part via an elastic body.
- the movable portion moves on the inner slope of the fixed portion in accordance with the braking force of the emergency stop device, and it is possible to adjust the width of the entire wedge to maintain a constant braking force of the emergency stop device.
- An elevator emergency stop device includes a fixed portion having an outer slope portion of a wedge-shaped body and a wedge-shaped movable portion having a sliding member, wherein the movable portion is movable along an inner slope of the fixed portion; The upper part sandwiches the elastic body. And it is configured to be engaged.
- the movable part smoothly moves on the inner slope of the fixed part according to the braking force of the elevator emergency stop device, and keeps the braking force of the elevator emergency stop device constant by finely adjusting the width of the entire wedge-shaped body. It becomes possible.
- An elevator emergency stop device includes a fixed portion having an outer slope portion of a wedge-shaped body and a wedge-shaped movable portion having a sliding member, and the movable portion is movable along an inner slope of the fixed portion.
- the upper part is configured to be engaged with the fixed part via an elastic body in which the relationship between the load and the bending changes in two stages.
- the movable part moves on the inner slope of the fixed part against the excessive braking force of the elevator safety device, and the braking force of the elevator safety device is kept constant by finely adjusting the width of the entire wedge. It becomes possible.
- An elevator emergency stop device includes a fixed portion having an outer slope portion of a wedge-shaped body and a wedge-shaped movable portion having a sliding member, and the movable portion is movable along an inner slope of the fixed portion.
- the upper part is connected to the fixed part via the biston to which the initial pressure is applied.
- the movable part moves on the inner slope of the fixed part only for the excessive braking force of the elevator emergency stop device, and finely adjusts the width of the entire wedge-shaped body to reduce the braking force of the errata emergency stop device. It can be kept constant.
- FIG. 1 is a plan view showing a first embodiment of an elevator safety device according to the present invention.
- FIG. 2 is a schematic view for explaining the structure of a wedge-shaped body of the elevator safety device of the present invention.
- Fig. 3 is a diagram showing the braking characteristics of the elevator emergency stop device.
- FIG. 4 is a plan view showing a second embodiment of the elevator safety device of the present invention.
- FIG. 5 is a schematic view for explaining the structure of a wedge-shaped body of a second embodiment of the elevator safety device of the present invention.
- FIG. 6 is a plan view showing a third embodiment of the elevator safety device of the present invention.
- FIG. 7 is a schematic view for explaining the structure of a wedge-shaped body of a third embodiment of the elevator safety device of the present invention.
- FIG. 8 is a graph showing the load and bending characteristics of the elastic body of the third and fourth embodiments of the elevator safety device of the present invention.
- FIG. 9 is a plan view showing a fourth embodiment of the elevator safety device of the present invention.
- FIG. 10 is a schematic view for explaining the structure of a wedge-shaped body of a fourth embodiment of the elevator safety device of the present invention.
- Fig. 11 is a schematic cross-sectional view of the elevator hoistway, showing the installation environment of the elevator safety device.
- FIG. 12 is a plan view showing an example of a conventional elevator safety device.
- FIG. 13 is a front view of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a view showing a first embodiment of an elevator safety device according to the present invention, and is a view corresponding to FIG. 11 shown in the prior art.
- FIG. 2A schematically shows the wedge-shaped body 3 of FIG.
- FIG. 2A is a schematic diagram when the braking force is small
- FIG. 2B is a schematic diagram when the braking force is large.
- FIGS. 1 and 2A differ from FIG. 1A shown in the prior art in that the wedge-shaped body 3 is divided into a movable portion 3a and a fixed portion 3b. It is.
- the fixing portion 3b has an outer slope portion like the wedge-shaped body 3 of the conventional elevator emergency stop device shown in FIG. 11, and a roller 5A is disposed on the outer slope portion to form the guide plate 6. It can move upward along the slope.
- the surface of the fixed part 3 b that faces the outer slope is An inner slope portion inclined in a direction opposite to the outer slope is formed. As shown in FIG. 1, guide grooves parallel to the inner slope are formed on the front and rear surfaces near the ⁇ -side slope of the fixing portion 3b, as shown in FIG.
- the movable portion 3a has a generally trapezoidal shape with a wide upper end, and has a sliding portion 11 on a surface facing the guide rail 1, and a surface facing the fixed portion 3b has an inner slope of the fixed portion 3b. A slope parallel to is formed. Guide grooves parallel to the slope are formed on the front and rear surfaces of the movable portion 3a, similarly to the guide grooves on the inner slope side of the fixed portion 3b.
- the guide groove of the fixed part 3b and the movable part 3a is the same mechanism as the holding plate 4A and the roller 5A connecting the guide plate 6 and the wedge-shaped body 3, and the movable part is formed by the holding plate 4B and the roller 5B.
- 3a is connected to the fixed portion 3b so as to be vertically movable.
- the upper side of the movable part 3a is connected to the fixed part 3b via an elastic body 10 made of a metal piece or the like as shown in FIG. 3b is configured to move along the inner slope.
- the elastic body 10 is gently fixed to the fixed portion 3b by a position restricting body 13 composed of a coil panel or the like so as to maintain its horizontal position, and the wedge-shaped body 3 is held by a holding plate 4C. It is held so that it does not fall off.
- the safety link 17 is actuated, and the lift rod 2 of the car 20 descending is raised relatively to the car 20.
- the wedge-shaped body 3 connected to the lower end of the lifting rod 2 rises relatively to the car 20, and a frictional force, that is, a braking force is applied between the sliding portion 11 of the wedge-shaped body 3 and the guide rail 1. Occurs.
- the movable part 3a receives a relatively small lifting force from the sliding part 11 and the elastic body 10 also has relatively small deflection, so that the movable part 3a is balanced near the middle part of the inner slope of the fixed part 3b, Apply braking.
- the braking progresses and the sliding speed between the sliding portion 11 and the guide rail 1 decreases, the dynamic friction coefficient increases, the braking force increases, and the radius of the elastic body 10 also increases. It rises relatively to the fixed part 3b.
- the movable portion 3a rises along the inner slope of the fixed portion 3b, its horizontal position approaches the fixed portion 3b side (in a direction away from the guide rail), that is, the width of the entire wedge-shaped body 3 ( (Dimensions in Fig. 2 a, 213) are reduced. Thereby, the bending of the spring 7 is reduced, and the force for pressing the sliding portion 10 of the wedge-shaped body 3 against the guide rail 1 is reduced.
- FIG. 3A is a diagram showing the braking characteristics of the conventional elevator emergency stop device
- FIG. 3B is a diagram showing the braking characteristics of the elevator emergency stop device of the present invention.
- rollers 5C as sliding bodies are arranged above and below the elastic body 10.
- the braking force of the elevator safety device is 500 kgf to several tf per 3 wedges. This load is directly transmitted from the movable part 3a to the fixed part 3b via the elastic body 10, so that the frictional force between the flexible body 10 and the movable part 3a and the fixed part 3b is 50 to Hundreds of kgf.
- the movable portion 3a is moved relative to the fixed portion 3b in order to finely adjust the width of the wedge-shaped body 3 by moving the movable portion 3a following the change in the dynamic friction coefficient during braking. Need to be done.
- the roller 5C is disposed above and below the elastic body 10 so as to sandwich the elastic body 10 so that the movable portion 3a can smoothly move and the braking force can be adjusted. Can be performed more minutely.
- wheels may be provided instead of the rollers, or the sliding surfaces may be coated with silicon teflon.
- the conventional braking force adjustment is not performed. It goes without saying that the present embodiment is significantly more effective than the embodiment.
- FIG. 6 and FIG. 7 show a third embodiment of the present invention.
- FIG. 6 and FIG. 7 correspond to FIG. 1 and FIG. 2A of the first embodiment, respectively.
- the difference from the first embodiment is that the initial pressure regulating body 21 is attached to the elastic body 10 by shrink fitting or the like. Since the internal pressure of the elastic body 10 is partially increased by the initial pressure regulating body 21, the load and radius characteristics of the elastic body 10 are as shown by the polygonal line (1) in FIG.
- the change in the braking force due to the change in the coefficient of dynamic friction is approximately 700 kgf to 130 kgf.
- the displacement of the movable part 3a due to this change in braking force is near the middle of the fixed part 3b inside slope at 700 kgf, and near the top of the fixed part 3b inside slope at 130 kgf. Become. In other words, only about half of the movable range of the movable portion 3a is used for adjusting the braking force.
- the movable portion 3a is near the lower portion of the inner slope portion of the fixed portion 3b.
- the amount of deflection per load exceeding 700 kgf increases, and the movable part 3a moves up the inner slope of the fixed part 3b and moves to the top of the ⁇ ⁇ side slope at 130 kgf It is like that.
- the braking force can be adjusted using most of the moving range of the movable portion 3a, and more stable braking characteristics can be provided.
- FIGS. 9 and 1 show a fourth embodiment of the present invention. 9 and FIG. 0 correspond to FIG. 6 and FIG. 7, respectively, of the third embodiment.
- the present embodiment is different from the third embodiment in that a gas-filled piston 22 is provided instead of the elastic body 10 and the initial pressure regulator 21.
- the initial pressure of the elastic body is given by the initial pressure regulating body, the initial pressure can be given only partially. As shown in the polygonal line (1) in FIG. The load and radius characteristics are changed.
- the load / deflection characteristic can be made as shown in a straight line (2) in FIG. Therefore, in the above example, up to 700 kgf, the movable part 3a is located at the bottom of the fixed part 3b, and the entire moving range of the movable part 3a can be used for adjusting the braking force. Stable braking characteristics can be provided.
- the width of the wedge-shaped body is changed in accordance with the braking force of the elevator emergency stop device, so that the force for pressing the wedge-shaped body against the guide rail can be adjusted. It is possible to provide an elevator emergency stop device that keeps the braking force constant even when the friction coefficient changes.
- a fixed portion having an outer slope portion of a wedge-shaped body, and a sliding member movable along the inner slope of the fixed portion and having an upper portion engaged with the fixed portion via an elastic body.
- the movable part moves along the inner slope of the fixed part according to the braking force of the elevator emergency stop device, and adjusts the width of the entire wedge-shaped body. It is possible to provide an elevator safety device that keeps the braking force constant.
- the movable portion and the fixed portion are engaged with each other by sandwiching the elastic body between the pair of sliding members. It is possible to provide an elevator emergency stop device that maintains the braking force constant by adjusting the width of the brake.
- the load and deflection characteristics of the elastic body are configured such that the radius is small or zero up to a certain load, and thereafter, the relationship between the load and the deflection is substantially proportional. Thus, a large part of the moving range of the movable portion can be used for adjusting the braking force, and an elevator safety device with more stable braking force can be provided.
- the elastic body is made of a rubber in which gas filled with an initial pressure is filled, the entire movable range of the movable portion can be used for adjusting the braking force. Further, it is possible to provide an elevator emergency stop device having a stable braking force.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01900637A EP1167269B1 (en) | 2000-01-11 | 2001-01-10 | Elevator emergency stopping device |
US09/890,407 US6997287B2 (en) | 2000-01-11 | 2001-01-10 | Elevator emergency stopping device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-2793 | 2000-01-11 | ||
JP2000002793A JP2001192184A (ja) | 2000-01-11 | 2000-01-11 | エレベータ非常止め装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001051399A1 true WO2001051399A1 (fr) | 2001-07-19 |
Family
ID=18531847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/000059 WO2001051399A1 (fr) | 2000-01-11 | 2001-01-10 | Dispositif d'arret d'urgence d'ascenseur |
Country Status (7)
Country | Link |
---|---|
US (1) | US6997287B2 (ja) |
EP (1) | EP1167269B1 (ja) |
JP (1) | JP2001192184A (ja) |
KR (1) | KR100430116B1 (ja) |
CN (1) | CN1167596C (ja) |
TW (1) | TW568878B (ja) |
WO (1) | WO2001051399A1 (ja) |
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DE112019007951T5 (de) | 2019-12-09 | 2022-09-22 | Mitsubishi Electric Corporation | Fahrstuhl und fangvorrichtung für diesen |
CN110963388B (zh) * | 2019-12-26 | 2022-01-11 | 上海汉神机电股份有限公司 | 一种用于电梯紧急制动的电梯安全钳 |
JP7001981B1 (ja) * | 2020-09-11 | 2022-01-20 | フジテック株式会社 | エレベータ停止装置及びエレベータ |
WO2023127032A1 (ja) * | 2021-12-27 | 2023-07-06 | 株式会社日立製作所 | つり合い錘及びエレベーター |
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JP2001002342A (ja) * | 1999-06-21 | 2001-01-09 | Toshiba Elevator Co Ltd | エレベーター用非常止め装置 |
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- 2001-01-10 TW TW090100555A patent/TW568878B/zh not_active IP Right Cessation
- 2001-01-10 EP EP01900637A patent/EP1167269B1/en not_active Expired - Lifetime
- 2001-01-10 WO PCT/JP2001/000059 patent/WO2001051399A1/ja active IP Right Grant
- 2001-01-10 US US09/890,407 patent/US6997287B2/en not_active Expired - Fee Related
- 2001-01-10 KR KR10-2001-7011292A patent/KR100430116B1/ko not_active IP Right Cessation
- 2001-01-10 CN CNB018000193A patent/CN1167596C/zh not_active Expired - Fee Related
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JPH03211181A (ja) * | 1989-12-14 | 1991-09-13 | Kone Elevator Gmbh | 安全装置 |
JPH06255949A (ja) * | 1993-03-05 | 1994-09-13 | Toshiba Corp | 自走式エレベータ |
JPH0717676A (ja) * | 1993-07-05 | 1995-01-20 | Hitachi Ltd | エレベータの非常止め装置 |
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Also Published As
Publication number | Publication date |
---|---|
CN1364138A (zh) | 2002-08-14 |
US6997287B2 (en) | 2006-02-14 |
EP1167269A1 (en) | 2002-01-02 |
EP1167269A4 (en) | 2003-03-19 |
KR20010108315A (ko) | 2001-12-07 |
US20020134624A1 (en) | 2002-09-26 |
CN1167596C (zh) | 2004-09-22 |
KR100430116B1 (ko) | 2004-05-03 |
EP1167269B1 (en) | 2012-03-28 |
JP2001192184A (ja) | 2001-07-17 |
TW568878B (en) | 2004-01-01 |
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