EP1724225A1 - Emergency brake device of elevator - Google Patents
Emergency brake device of elevator Download PDFInfo
- Publication number
- EP1724225A1 EP1724225A1 EP04713643A EP04713643A EP1724225A1 EP 1724225 A1 EP1724225 A1 EP 1724225A1 EP 04713643 A EP04713643 A EP 04713643A EP 04713643 A EP04713643 A EP 04713643A EP 1724225 A1 EP1724225 A1 EP 1724225A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- braking
- drive sheave
- brake
- brake shoe
- sheave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Definitions
- the present invention relates to an emergency brake device for an elevator which brakes rotation of a drive sheave to stop an upward travel of a car.
- a brake pulley located adjacent to an axial end portion of a drive sheave is rotated integrally with the drive sheave.
- the brake pulley is provided with a braking surface to be joined to the axial end portion of the drive sheave. Further, the brake pulley is pressed against the drive sheave by means of a brake spring.
- a brake bolt engages with the brake pulley to stop the rotation of the brake pulley.
- braking is applied to the drive sheave due to the friction force between the drive sheave and the braking surface.
- the present invention has been made with a view to solving the problems mentioned above, and therefore it is an object of the invention to provide an emergency brake device for an elevator which is capable of stopping the travel of a car more quickly.
- an emergency brake device for an elevator which brakes rotation of a drive sheave, around which a main rope for suspending a car and a counterweight are wound, to stop upward travel of the car, comprising: a braking member having an attachment member and a brake shoe, the attachment member being capable of rocking motion about a rotation shaft of a deflector sheave around which the main rope is wound on a counterweight side with respect to the drive sheave, the brake shoe being provided to the attachment member and brought into and out of contact with a deflector sheave side outer peripheral surface of the drive sheave due to the rocking motion of the attachment member; and braking/releasing means connected to the braking member, for holding the brake shoe in a separated position separated from the drive sheave upon brake release and for causing the braking member to rock into abutment with the drive sheave upon braking.
- Fig. 1 is a schematic structural view showing an elevator apparatus according to an embodiment of the present invention.
- a pair of car guide rails 2 and a pair of counterweight guide rails 3 are arranged in a hoistway 1.
- a car 4 is raised and lowered in the hoistway 1 while being guided by the car guide rails 2.
- a counterweight 5 is raised and lowered in the hoistway 1 while being guided by the counterweight guide rails 3.
- a machine room 6 is provided at a top of the hoistway 1.
- a machine base 7 is arranged in the machine room 6.
- a drive device (hoisting machine) 8 and a deflector sheave 9 are supported to the machine base 7.
- the drive sheave 8 has a drive sheave main body 8a including a motor and a brake, and a drive sheave (traction sheave) 8b that is rotated by the motor of the drive device main body 8a.
- a plurality of main ropes 10 (only one of which is shown in Fig. 1) are wound around the drive sheave 8b and the deflector sheave 9.
- Each main rope 10 has a first end portion 10a to which the car 4 is connected, and a second end portion 10b to which the counterweight 5 is connected. That is, in the hoistway 1, the car 4 and the counterweight 5 are suspended according to a 1:1 roping system and raised and lowered by the drive force of the drive device 8.
- a rotation shaft 9a of the deflector sheave 9 is parallel and horizontal to a rotation shaft 8c of the drive sheave 8b.
- the rotation shafts 8c, 9a are stationary shafts, with the drive sheave 8b and the deflector sheave 9 being rotatable with respect to the drive shafts 8c, 9a, respectively.
- the main rope 10 is wound around the deflector sheave 9 at a position on the counterweight 5 side with respect to the drive device 8.
- the deflector sheave 9 leads the main rope 10 from the drive sheave 8b to the deflector sheave 9.
- an emergency brake device 11 for braking the rotation of the drive sheave 8b in an emergency situation to stop the car 4.
- the emergency stop device 11 is provided outside the drive sheave 8 separately from a brake arranged inside the drive device main body 8a. Further, the emergencybrake device 11 is electrically connected to a control device (control panel) 12 for controlling the drive device 8. A signal from a speed detector 13, which detects the speed of the car 4, is inputted to the control device 12.
- the emergency brake device 11 When the ascent speed of the car 4 exceeds a preset speed, the emergency brake device 11 is actuated by the control device 12, whereby braking is applied to the rotation of the drive sheave 8b to thereby stop the car 4. It should be noted that when the descent speed of the car 4 exceeds a preset speed, a braking command signal is transmitted from the control device 2 to an emergency stop device (not shown) mounted in the car 4, thereby actuating the emergency stop device to stop the car 4.
- Fig. 2 is a side view showing, partly in section, the construction of the emergency brake device 11 of Fig. 1
- Fig. 3 is a side view showing how braking is effected with the emergency brake device 11 of Fig. 2
- Fig. 4 is a sectional view taken along the line IV-IV of Fig. 2
- Fig. 5 is a sectional view taken along the line V-V of Fig. 3.
- an attachment member (attachment arm) 15 is attached to the rotation shaft 9a of the deflector sheave 9.
- the attachment member 15 is capable of rocking with respect to the rotation shaft 9a about the rotation shaft 9a.
- a brake shoe 17 is attached to the distal end portion of the attachment member 15 through a plurality of brake springs 16.
- the brake shoe 17 is brought into and out of contact with the deflector sheave 9 side (counterweight 5 side) outer peripheral surface of the drive sheave 8b due to the rocking motion of the attachment member 15. That is, the brake shoe 17 is displaceable between a separated position (Fig. 2) where it is separated from the drive sheave 8b and a braking position (Fig. 3) where it is in abutment with the outer peripheral surface of the drive sheave 8b.
- the attachment member 15, the brake springs 16, and the brake shoe 17 constitute a braking member 18.
- a support member 19 is fixed to the rotation shaft 9a.
- the support member 19 is held in its horizontal position irrespective of the rotation of the deflector sheave 9 or the rocking motion of the braking member 18.
- Supported by the support member 18 is an electromagnetic actuator 20 serving as braking/releasing means.
- the electromagnetic actuator 20 has a plunger 21 connected to the brake shoe 17 and a solenoid coil 22 for driving the plunger 21.
- the solenoid coil 22 serves to hold the brake shoe 17 in the separated position through the intermediation of the plunger 21.
- the solenoid coil 22 is deenergized, whereby the braking member 18 falls due to its own weight so the brake shoe 17 is brought into abutment with the drive sheave 8b.
- the electromagnetic actuator 20 has a built-in auxiliary spring 25 urging the plunger 21 downward so that the plunger 21 is lowered with greater reliability at the time of braking.
- An engaging member 24 is fixed to the brake shoe 17.
- the engaging member 24 is provided with an elongated hole 24a.
- the plunger 21 is provided with an engaging protrusion inserted in the elongated hole 24a.
- the plunger 21 is connected to the brake shoe 17 through the intermediation of the engaging member 24.
- Respectively provided in the outer peripheral surface of the drive sheave 8b and the outer peripheral surface of the deflector sheave 9 are a plurality of rope grooves 8d, 9b (Figs. 4 and 5) into which the main ropes 10 are inserted.
- the solenoid coil 22 is energized so that the plunger 21 is pushed up by the electromagnetic force of the solenoid coil 22, whereby the brake shoe 17 is separated from the outer peripheral surface of the drive sheave 8b. Further, the travelling speed of the car 4 is detected by the speed detector 13 and constantly monitored by the control device 12.
- the brake shoe 17 is further displaced in the rotation direction of the drive sheave 8b after abutting with the outer peripheral surface of the drive sheave 8b, because the drive sheave 8b is rotating clockwise as seen in Figs. 2 and 3. That is, the braking member 18 functions like a wedge so as to be wedged between the rotation shaft 9a and the drive sheave 8b. At this time, the brake spring 16 is compressed between the attachment member 15 and the brake shoe 17.
- the brake shoe 17 is displaced until equilibrium is reached between the spring force of the brake spring 16 and the friction braking force generated by the brake shoe 17. That is, as the brake spring 16 is compressed, a force for pressing the brake shoe 17 against the drive sheave 8b is generated, whereby a friction braking force is generated between the brake shoe 17 and the drive sheave 8b.
- the ascending car 4 can be decelerated with a predetermined braking force to be brought to a stop more quickly, irrespective of the speed of the car 4.
- the attachment member 15 is capable of rocking about the rotation shaft 9a, thus allowing effective utilization of the space between the drive sheave 8b and the deflector sheave 9 in placing the emergency brake device 11. Furthermore, the casing of the deflector sheave 9 also serves as the casing of the emergency brake device 11 and thus it is unnecessary to provide a separate casing dedicated to the emergency brake device 11, thereby achieving a reduction in cost.
- the brake shoe 17 is held in the separated position by energizing the solenoid coil 22, and the brake shoe 17 is brought into abutment with the drive sheave 8b by deenergizing the solenoid coil 22, whereby the rocking motion of the braking member 18 can be effected immediately in response to a command from the control device 12.
- the braking member 18 rocks due to its own weight and the brake shoe 17 comes into abutment with the drive sheave 8b, thereby making it possible to bring the brake shoe 17 into abutment with the drive sheave 8b with greater reliability by means of a simple structure.
- the emergency brake device 11 While in the above-described example the emergency brake device 11 is operated when the ascent speed of the car 4 reaches an abnormal speed, the emergency brake device 11 may also be operated when the car 4 is at rest at a landing floor during normal operation, thereby preventing the car 4 from ascending abnormally while passengers are getting into or out of the car 4.
- the electromagnetic actuator 20 is exemplified as the braking/releasing means
- the braking/releasing means is not limited to this.
- an air actuator for holding the brake shoe in the separated position by means of air pressure or the like can also be employed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- The present invention relates to an emergency brake device for an elevator which brakes rotation of a drive sheave to stop an upward travel of a car.
- In a conventional emergency brake device for an elevator disclosed in
JP 5-193860 A - When the ascent speed of a car exceeds a preset speed, a brake bolt engages with the brake pulley to stop the rotation of the brake pulley. When the brake pulley is stopped, braking is applied to the drive sheave due to the friction force between the drive sheave and the braking surface.
- In the conventional emergency brake device described above, however, it takes time for the drive sheave to stop after the brake bolt is displaced in response to an emergency detection signal, resulting in a corresponding increase in the speed of the car.
- The present invention has been made with a view to solving the problems mentioned above, and therefore it is an object of the invention to provide an emergency brake device for an elevator which is capable of stopping the travel of a car more quickly.
- To this end, according to one aspect of the present invention, there is provided an emergency brake device for an elevator which brakes rotation of a drive sheave, around which a main rope for suspending a car and a counterweight are wound, to stop upward travel of the car, comprising: a braking member having an attachment member and a brake shoe, the attachment member being capable of rocking motion about a rotation shaft of a deflector sheave around which the main rope is wound on a counterweight side with respect to the drive sheave, the brake shoe being provided to the attachment member and brought into and out of contact with a deflector sheave side outer peripheral surface of the drive sheave due to the rocking motion of the attachment member; and braking/releasing means connected to the braking member, for holding the brake shoe in a separated position separated from the drive sheave upon brake release and for causing the braking member to rock into abutment with the drive sheave upon braking.
-
- Fig. 1 is a schematic structural view showing an elevator apparatus according to an embodiment of the present invention;
- Fig. 2 is a side view showing, partly in section, the construction of an emergency brake device of Fig. 1;
- Fig. 3 is a side view showing how braking is effected with the emergency brake device of Fig. 2;
- Fig. 4 is a sectional view taken along the line IV-IV of Fig. 2; and
- Fig. 5 is a sectional view taken along the line V-V of Fig. 3.
- Hereinbelow, a preferred embodiment of the present invention will be described with reference to the drawings.
- Fig. 1 is a schematic structural view showing an elevator apparatus according to an embodiment of the present invention. In Fig. 1, a pair of
car guide rails 2 and a pair ofcounterweight guide rails 3 are arranged in ahoistway 1. Acar 4 is raised and lowered in thehoistway 1 while being guided by thecar guide rails 2. Acounterweight 5 is raised and lowered in thehoistway 1 while being guided by thecounterweight guide rails 3. - A
machine room 6 is provided at a top of thehoistway 1. A machine base 7 is arranged in themachine room 6. A drive device (hoisting machine) 8 and adeflector sheave 9 are supported to the machine base 7. Thedrive sheave 8 has a drive sheavemain body 8a including a motor and a brake, and a drive sheave (traction sheave) 8b that is rotated by the motor of the drive devicemain body 8a. - A plurality of main ropes 10 (only one of which is shown in Fig. 1) are wound around the
drive sheave 8b and thedeflector sheave 9. Eachmain rope 10 has afirst end portion 10a to which thecar 4 is connected, and asecond end portion 10b to which thecounterweight 5 is connected. That is, in thehoistway 1, thecar 4 and thecounterweight 5 are suspended according to a 1:1 roping system and raised and lowered by the drive force of thedrive device 8. - A
rotation shaft 9a of thedeflector sheave 9 is parallel and horizontal to arotation shaft 8c of thedrive sheave 8b. Therotation shafts drive sheave 8b and thedeflector sheave 9 being rotatable with respect to thedrive shafts main rope 10 is wound around thedeflector sheave 9 at a position on thecounterweight 5 side with respect to thedrive device 8. Thedeflector sheave 9 leads themain rope 10 from thedrive sheave 8b to thedeflector sheave 9. - Provided between the
deflector sheave 9 and thedrive sheave 8b is anemergency brake device 11 for braking the rotation of thedrive sheave 8b in an emergency situation to stop thecar 4. Theemergency stop device 11 is provided outside thedrive sheave 8 separately from a brake arranged inside the drive devicemain body 8a. Further, theemergencybrake device 11 is electrically connected to a control device (control panel) 12 for controlling thedrive device 8. A signal from aspeed detector 13, which detects the speed of thecar 4, is inputted to thecontrol device 12. - When the ascent speed of the
car 4 exceeds a preset speed, theemergency brake device 11 is actuated by thecontrol device 12, whereby braking is applied to the rotation of thedrive sheave 8b to thereby stop thecar 4. It should be noted that when the descent speed of thecar 4 exceeds a preset speed, a braking command signal is transmitted from thecontrol device 2 to an emergency stop device (not shown) mounted in thecar 4, thereby actuating the emergency stop device to stop thecar 4. - Fig. 2 is a side view showing, partly in section, the construction of the
emergency brake device 11 of Fig. 1, Fig. 3 is a side view showing how braking is effected with theemergency brake device 11 of Fig. 2, Fig. 4 is a sectional view taken along the line IV-IV of Fig. 2, and Fig. 5 is a sectional view taken along the line V-V of Fig. 3. - Referring to the figures, an attachment member (attachment arm) 15 is attached to the
rotation shaft 9a of thedeflector sheave 9. Theattachment member 15 is capable of rocking with respect to therotation shaft 9a about therotation shaft 9a. Abrake shoe 17 is attached to the distal end portion of theattachment member 15 through a plurality ofbrake springs 16. - The
brake shoe 17 is brought into and out of contact with thedeflector sheave 9 side (counterweight 5 side) outer peripheral surface of thedrive sheave 8b due to the rocking motion of theattachment member 15. That is, thebrake shoe 17 is displaceable between a separated position (Fig. 2) where it is separated from thedrive sheave 8b and a braking position (Fig. 3) where it is in abutment with the outer peripheral surface of thedrive sheave 8b. Formed in the surface of thebrake shoe 17 is a concave portion curved at the same curvature as the outer peripheral surface of thedrive sheave 8b. - The
attachment member 15, the brake springs 16, and thebrake shoe 17 constitute abraking member 18. - A
support member 19 is fixed to therotation shaft 9a. Thesupport member 19 is held in its horizontal position irrespective of the rotation of thedeflector sheave 9 or the rocking motion of thebraking member 18. Supported by thesupport member 18 is anelectromagnetic actuator 20 serving as braking/releasing means. - The
electromagnetic actuator 20 has aplunger 21 connected to thebrake shoe 17 and asolenoid coil 22 for driving theplunger 21. When energized, thesolenoid coil 22 serves to hold thebrake shoe 17 in the separated position through the intermediation of theplunger 21. - Further, at the time of braking, the
solenoid coil 22 is deenergized, whereby thebraking member 18 falls due to its own weight so thebrake shoe 17 is brought into abutment with thedrive sheave 8b. Theelectromagnetic actuator 20 has a built-inauxiliary spring 25 urging theplunger 21 downward so that theplunger 21 is lowered with greater reliability at the time of braking. - An
engaging member 24 is fixed to thebrake shoe 17. Theengaging member 24 is provided with anelongated hole 24a. Theplunger 21 is provided with an engaging protrusion inserted in theelongated hole 24a. Theplunger 21 is connected to thebrake shoe 17 through the intermediation of theengaging member 24. - Respectively provided in the outer peripheral surface of the
drive sheave 8b and the outer peripheral surface of thedeflector sheave 9 are a plurality ofrope grooves main ropes 10 are inserted. - Next, operation will be described. Normally, the
solenoid coil 22 is energized so that theplunger 21 is pushed up by the electromagnetic force of thesolenoid coil 22, whereby thebrake shoe 17 is separated from the outer peripheral surface of thedrive sheave 8b. Further, the travelling speed of thecar 4 is detected by thespeed detector 13 and constantly monitored by thecontrol device 12. - When the ascent speed of the
car 4 exceeds a rated speed and reaches a preset speed, the current to thesolenoid coil 22 is shut off by thecontrol device 12. When the solenoid coi122 is deenergized, the brakingmember 18 is rocked due to its own weight and to the spring force of theauxiliary spring 25, thereby bringing thebrake shoe 17 into abutment with the outer peripheral surface of thedrive sheave 8b. - During ascent of the
car 4, thebrake shoe 17 is further displaced in the rotation direction of thedrive sheave 8b after abutting with the outer peripheral surface of thedrive sheave 8b, because thedrive sheave 8b is rotating clockwise as seen in Figs. 2 and 3. That is, the brakingmember 18 functions like a wedge so as to be wedged between therotation shaft 9a and thedrive sheave 8b. At this time, thebrake spring 16 is compressed between theattachment member 15 and thebrake shoe 17. - The
brake shoe 17 is displaced until equilibrium is reached between the spring force of thebrake spring 16 and the friction braking force generated by thebrake shoe 17. That is, as thebrake spring 16 is compressed, a force for pressing thebrake shoe 17 against thedrive sheave 8b is generated, whereby a friction braking force is generated between thebrake shoe 17 and thedrive sheave 8b. - Accordingly, the ascending
car 4 can be decelerated with a predetermined braking force to be brought to a stop more quickly, irrespective of the speed of thecar 4. - Further, the
attachment member 15 is capable of rocking about therotation shaft 9a, thus allowing effective utilization of the space between thedrive sheave 8b and thedeflector sheave 9 in placing theemergency brake device 11. Furthermore, the casing of thedeflector sheave 9 also serves as the casing of theemergency brake device 11 and thus it is unnecessary to provide a separate casing dedicated to theemergency brake device 11, thereby achieving a reduction in cost. - Further, the
brake shoe 17 is held in the separated position by energizing thesolenoid coil 22, and thebrake shoe 17 is brought into abutment with thedrive sheave 8b by deenergizing thesolenoid coil 22, whereby the rocking motion of the brakingmember 18 can be effected immediately in response to a command from thecontrol device 12. - Furthermore, upon deenergizing the
solenoid coil 22, the brakingmember 18 rocks due to its own weight and thebrake shoe 17 comes into abutment with thedrive sheave 8b, thereby making it possible to bring thebrake shoe 17 into abutment with thedrive sheave 8b with greater reliability by means of a simple structure. - While in the above-described example the
emergency brake device 11 is operated when the ascent speed of thecar 4 reaches an abnormal speed, theemergency brake device 11 may also be operated when thecar 4 is at rest at a landing floor during normal operation, thereby preventing thecar 4 from ascending abnormally while passengers are getting into or out of thecar 4. - Further, while in the above-described example the
electromagnetic actuator 20 is exemplified as the braking/releasing means, the braking/releasing means is not limited to this. For example, an air actuator for holding the brake shoe in the separated position by means of air pressure or the like can also be employed.
Claims (4)
- An emergency brake device for an elevator which brakes rotation of a drive sheave, around which a main rope for suspending a car and a counterweight are wound, to stop upward travel of the car, comprising:a braking member having an attachment member and a brake shoe, the attachment member being capable of rocking motion about a rotation shaft of a deflector sheave around which the main rope is wound on a counterweight side with respect to the drive sheave, the brake shoe being provided to the attachment member and brought into and out of contact with a deflector sheave side outer peripheral surface of the drive sheave due to the rocking motion of the attachment member; andbraking/releasing means connected to the braking member, for holding the brake shoe in a separated position separated from the drive sheave upon brake release and for causing the braking member to rock into abutment with the drive sheave upon braking.
- The emergency brake device for an elevator according to Claim 1, wherein the braking member further has a brake spring provided between the attachment member and the brake shoe.
- The emergency brake device for an elevator according to Claim 1, wherein the braking/releasing means has a plunger connected to the braking member, and a solenoid coil that, when energized, causes the brake shoe to be held in the separated position through the plunger.
- The emergency brake device for an elevator according to Claim 3, wherein deenergization of the solenoid coil causes the braking member to rock due to its own weight to bring the brake shoe into abutment with the drive sheave.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/002056 WO2005080248A1 (en) | 2004-02-23 | 2004-02-23 | Emergency brake device of elevator |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1724225A1 true EP1724225A1 (en) | 2006-11-22 |
EP1724225A4 EP1724225A4 (en) | 2012-02-22 |
EP1724225B1 EP1724225B1 (en) | 2013-01-09 |
Family
ID=34878955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04713643A Expired - Lifetime EP1724225B1 (en) | 2004-02-23 | 2004-02-23 | Emergency brake device of elevator |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1724225B1 (en) |
JP (1) | JP4292201B2 (en) |
CN (1) | CN100447068C (en) |
WO (1) | WO2005080248A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135832A1 (en) * | 2008-06-19 | 2009-12-23 | Inventio Ag | Elevator brake and elevator assembly with an elevator brake |
EP2452910A1 (en) * | 2009-07-08 | 2012-05-16 | Mitsubishi Electric Corporation | Direct-acting drum brake device for elevator |
CN103062256A (en) * | 2013-02-02 | 2013-04-24 | 江苏武东机械有限公司 | Cone-shaped disc brake |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7656641B2 (en) * | 2006-12-21 | 2010-02-02 | General Electric Company | Apparatus and method for controlling a solenoid |
CN103112795B (en) * | 2013-02-02 | 2015-10-07 | 江苏武东机械有限公司 | Self-locking outer rim drg |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190917998A (en) * | 1909-08-04 | 1910-08-04 | Paul Taylor Kenny | Safety Indicator and Control for Electric Lifts. |
DE2160935A1 (en) * | 1970-12-09 | 1972-06-22 | Hitachi Ltd | Braking device |
JPH06199483A (en) * | 1993-01-07 | 1994-07-19 | Mitsubishi Electric Corp | Elevator brake device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002053485A1 (en) * | 2000-12-28 | 2002-07-11 | Mitsubishi Denki Kabushiki Kaisha | Emergency brake device of elevator |
KR100614145B1 (en) * | 2002-04-19 | 2006-08-21 | 미쓰비시덴키 가부시키가이샤 | Emergency brake device for elevator |
-
2004
- 2004-02-23 EP EP04713643A patent/EP1724225B1/en not_active Expired - Lifetime
- 2004-02-23 WO PCT/JP2004/002056 patent/WO2005080248A1/en active Application Filing
- 2004-02-23 JP JP2006519061A patent/JP4292201B2/en not_active Expired - Fee Related
- 2004-02-23 CN CNB2004800039970A patent/CN100447068C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190917998A (en) * | 1909-08-04 | 1910-08-04 | Paul Taylor Kenny | Safety Indicator and Control for Electric Lifts. |
DE2160935A1 (en) * | 1970-12-09 | 1972-06-22 | Hitachi Ltd | Braking device |
JPH06199483A (en) * | 1993-01-07 | 1994-07-19 | Mitsubishi Electric Corp | Elevator brake device |
Non-Patent Citations (1)
Title |
---|
See also references of WO2005080248A1 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135832A1 (en) * | 2008-06-19 | 2009-12-23 | Inventio Ag | Elevator brake and elevator assembly with an elevator brake |
EP2452910A1 (en) * | 2009-07-08 | 2012-05-16 | Mitsubishi Electric Corporation | Direct-acting drum brake device for elevator |
EP2452910A4 (en) * | 2009-07-08 | 2014-12-17 | Mitsubishi Electric Corp | Direct-acting drum brake device for elevator |
CN103062256A (en) * | 2013-02-02 | 2013-04-24 | 江苏武东机械有限公司 | Cone-shaped disc brake |
CN103062256B (en) * | 2013-02-02 | 2015-11-18 | 江苏武东机械有限公司 | Taper disk type braker |
Also Published As
Publication number | Publication date |
---|---|
EP1724225A4 (en) | 2012-02-22 |
WO2005080248A1 (en) | 2005-09-01 |
CN1747886A (en) | 2006-03-15 |
JPWO2005080248A1 (en) | 2007-08-30 |
CN100447068C (en) | 2008-12-31 |
JP4292201B2 (en) | 2009-07-08 |
EP1724225B1 (en) | 2013-01-09 |
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