EP1431232A1 - Systeme de levage d'ascenseur et ascenseur - Google Patents

Systeme de levage d'ascenseur et ascenseur Download PDF

Info

Publication number
EP1431232A1
EP1431232A1 EP01945711A EP01945711A EP1431232A1 EP 1431232 A1 EP1431232 A1 EP 1431232A1 EP 01945711 A EP01945711 A EP 01945711A EP 01945711 A EP01945711 A EP 01945711A EP 1431232 A1 EP1431232 A1 EP 1431232A1
Authority
EP
European Patent Office
Prior art keywords
brake
coil
armature
lining
brake drum
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
Application number
EP01945711A
Other languages
German (de)
English (en)
Other versions
EP1431232B1 (fr
EP1431232A4 (fr
Inventor
Koji c/o Mitsubishi Denki Kabushiki Kaisha OKADA
Naoyuki Mitsubishi Denki K. K. MARUYAMA
Takashi Mitsubishi Denki K. K. YUMURA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1431232A1 publication Critical patent/EP1431232A1/fr
Publication of EP1431232A4 publication Critical patent/EP1431232A4/fr
Application granted granted Critical
Publication of EP1431232B1 publication Critical patent/EP1431232B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • 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
    • 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

Definitions

  • the invention relates to an elevator hoisting machine and an elevator system for causing a passenger car and a counterweight to ascend and descend by means of driving a pull rope, and more particularly, to an elevator hoisting machine and an elevator system, each having a brake section in the vicinity of a brake drum.
  • An elevator hoisting machine having a brake section for braking rotation of a brake drum housed in the brake drum has hitherto been known.
  • FIG. 6 is a schematic cross-sectional view showing a known elevator hoisting machine.
  • a brake section is housed in a brake drum 1 in which a main spindle is rotated upon receipt of thrust.
  • the brake section is in principle constituted of linings 2, brake coils 3, armatures 4, a coil mount section 5, arms 6, compression springs 7, and metal pieces 12.
  • the coil mount section 5 is fixedly disposed at the center of the inside of the brake drum 1.
  • Members, such as one of the lining 2, one of the brake coils 3, one of the armatures 4, one of the arms 6, one of the compression springs 7, and some of the metal pieces 12, are provided on either side of the coil mount section 5.
  • the brake coils 3 are fastened to both sides of the coil mount section 5 with use of bolts 10 by way of a predetermined number of metal pieces 12 to be described later.
  • each of the brake coils 3 has a coil section 3a in which a coil is wrapped. Desired electromagnetic force develops as a result of energization of the coil section 3a.
  • An arm 6 is provided, by use of a pin 9, on either side of the coil mount section 5 in a pivotable manner with use of a pin 9.
  • the armature 4 is seated on a portion of each arm 6, which portion opposes the coil mount section 5, so as to oppose a corresponding brake coil 3.
  • the armature 4 is attracted to the brake coil 3 by means of electromagnetic force developing as a result of energization of the brake coil 3.
  • the lining 2 is supported on a portion of the arm 6 opposing the brake drum 1. More specifically, the lining 2 has a receiving section (shoe) 2a having through holes formed therein for fastening bolts 11.
  • the arm 6 has female screw sections corresponding to the through holes formed in the receiving section 2a.
  • the lining 2 is fixed to the arm 6 by means of fastening the bolts 11 onto the female screw sections through the through holes.
  • One end of the compression spring 7 is supported by the extremity of the arm 6 distant from the pin 9, and the other end of the same is supported at a predetermined position on the coil fixing section 5 opposing the extremity.
  • four bolts 8, four bolts 10, and four bolts 11 are provided within a plane for fastening members together.
  • the linings 2 are brought into and out of contact with the brake drum 1 in association with actuation of the armatures 4 stemming from electromagnetic force of the brake coils 3.
  • the armatures 4 are attracted to the brake coils 3 by means of electromagnetic force developing in the coil sections 3a.
  • the linings 2 are detached from the brake drum 1.
  • the armatures 4 are released from the brake coils 3 in association with vanishing of electromagnetic force.
  • the linings 2 are brought into contact with the brake drum 1 at a predetermined pressure, by means of the spring force of the compression springs 7. In this way, rotation of the brake drum 1 is controlled by means of bringing the linings 2 into and out of contact with the brake drum 1.
  • magnets are provided along an outer peripheral section of the brake drum 1.
  • Stators each of which is wrapped with a coil, are also fixedly disposed with a clearance along an outer periphery of the magnets.
  • a so-called dynamo electric motor is constituted.
  • the brake drum 1 rotates around an unillustrated main spindle in either direction.
  • a towing rope wrapped around the drum main body provided coaxially with the brake drum 1 is driven, whereby the passenger car and the counterweight, both being connected to the towing rope, are caused to ascend and descend.
  • the difficulty will now be described in detail.
  • two factors are important and affect the braking performance of the brake section.
  • One factor is adjustment of a gap existing between the brake drum 1 and the linings 2 when the linings 2 are detached from the brake drum 1.
  • the gap existing when the linings 2 are detached from the brake drum 1 improves a response ( i . e . , a time required to bring the linings 2 into contact with the brake drum 1) for bringing the linings 2 into contact with the drum 1.
  • the gap reduces sound of collision developing when the linings 2 are brought into contact with the brake drum 1.
  • the gap In order to minimize the electromagnetic force to be produced by the brake coil 3 and make the brake coil 3 compact, the gap must be made minute and adjusted accurately.
  • Another factor is adjustment of the parallelism between the surfaces of the armatures 4 and the surfaces of the corresponding brake coils 3 when the linings 2 are in contact with the brake drum 1.
  • the parallelism In order to cause the electromagnetic force developing in the brake coils 3 to efficiently act on the armatures 4 and improve adsorption developing between the armatures 4 and the corresponding brake coils 3, the parallelism must be adjusted accurately.
  • gaps existing between the brake drum 1 and the linings 2 and the parallelism existing between the armatures 4 and the brake coils 3 are adjusted by means of the metal pieces 12 interposed between the coil mount section 5 and the brake coils 3. Detailed adjustment procedures are as follows.
  • the parallelism between the armatures 4 and the brake coils 3 is checked while the linings 2 remain in contact with the brake drum 1, by means of, e.g., a feeler gauge or an optical method.
  • the brake coils 3 are re-assembled by removing the bolts 10.
  • the attitude (height of each support section) of each brake coil 3 is adjusted with respect to the coil mount section 5.
  • the parallelism between the coil mount section 5 and the armatures 4 is adjusted to fall within the range of a predetermined value.
  • gaps existing between the linings 2 and the brake drum 1 are checked while the linings 2 are detached from the brake drum 1 manually or by energization of the brake coil 3, through use of a feeler gauge or an optical method.
  • the bolts 10 are removed, to thereby re-assemble the brake coils 3 for increasing or decreasing the number of metal pieces 12 while a difference between the sections in terms of the number of lining pieces having already provided therein (the sections) is maintained in accordance with the degree of the thus-checked gaps.
  • the height of each brake coil 3 with respect to the coil mount section 5 is adjusted while the parallelism that has already been adjusted is maintained.
  • the gaps existing between the linings 2 and the brake drum 1 are adjusted to fall within the range of a predetermined value.
  • the adjustment operation is achieved by alternating iteration of an operation for checking parallelism or a gap and an operation for re-assembling the brake coil 3, which is comparatively heavy.
  • the adjustment operation involves consumption of much time and effort.
  • the metal pieces 12 are usually formed to a thickness of about 0.1 mm, andvariations in lining pieces must be diminished by means of enhancing the accuracy of lining pieces.
  • adjustment of a gap can be performed by only an amount proportional to the thickness of the lining piece.
  • the invention has been conceived to solve the problem and aims at providing a highly-reliable elevator hoisting machine and a highly-reliable elevator system which enable comparatively easy performance of an operation for adjusting a gap arising between linings and a brake drum when the linings are detached from the brake drum and an operation for adjusting the parallelism between a brake coil and an armature when the lining is in contact with the brake drum; and which enable adjustment within a highly-accurate range.
  • the invention relates to an elevator hoisting machine, wherein arms for supporting linings are provided with a mechanism for adjusting gaps between a brake drum and linings, the linings being provided so as to be removable from the brake drum, when the linings are detached from the brake drum.
  • the gap between the linings and the brake drum can be adjusted without removal of constituent members and within a short period of time.
  • a female screw section is formed in an arm so as to penetrate through the arm.
  • a bolt formed integrally with the lining is fitted into the female screw section, thereby constituting a gap adjustment mechanism.
  • the bolt is imparted with a hollow structure, and a support shaft and a compression spring are provided in the hollow section, whereby the bolt is formed integrally with the lining.
  • a gap between the lining and the brake drum can be readily adjusted within a short period of time.
  • the lining is actuated consecutively in minute units, thereby enabling highly-accurate adjustment of a gap.
  • an arm for supporting the lining and an armature is further provided with a mechanism for adjusting a gap between the lining and the brake drum when the lining is detached from the drum, and a mechanism for adjusting the parallelism between the armature and the brake coil when the lining is in contact with the brake drum.
  • a plurality of bolts projecting toward the armature are provided on the arm.
  • Two nuts are screwed onto each bolt so as to clamp the armature from both sides, thereby constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • a plurality of bolts projecting toward the armature are provided on the arm.
  • a nut is screwed onto one side of each bolt, and a compression spring for loading the armature is provided on the other side of the bolt with the armature interposed between the bolt and the spring, thereby constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • a coil mount section for supporting brake coils is further provided with a mechanism for adjusting a gap between the lining and the brake drum when the lining is detached from the drum, and a mechanism for adjusting the parallelism between the armature and the brake coil when the lining is in contact with the brake drum.
  • a plurality of bolts projecting toward the armature are provided on the coil mount section.
  • Two nuts are screwed onto each bolt such that the brake coil is interposed between the nuts, thus constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • a plurality of bolts projecting toward the armature are provided on the coil mount section.
  • a nut is screwed onto one side of each bolt, and a compression spring for loading the brake coil is provided on the other side of the bolt with the brake coil interposed between the bolt and the spring, thereby constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • the invention also relates to an elevator system having the foregoing improved elevator hoisting machine.
  • a brake section of the elevator hoisting machine in the elevator system can be readily adjusted within a short period of time.
  • Fig. 1 is a schematic cross-sectional view showing a first preferable elevator hoisting machine according to the invention.
  • a brake drum 1 which rotates around an unillustrated main shaft upon receipt of thrust houses a brake section, which primarily comprises linings 2; brake coils 3; armatures 4; a coil mount section 5; arms 6; compression springs 7; and metal pieces 12.
  • the brake coils 3 are fastened to respective sides of the coil mount section 5 by way of the metal pieces 12 and by use of bolts 10.
  • each of the armatures 4 is fastened to a portion of each arm 6 opposing the coil mount section 5 so as to oppose the corresponding brake coil 3.
  • the linings 2 are respectively supported on a portion of each arm 6 opposing the brake drum 1.
  • the arm 6 has a female screw section formed so as to penetrate through the arm 6.
  • the lining 2 has a hollow bolt 21 to be fitted to the female screw section.
  • the hollow bolt 21 is fitted to the female screw section of the arm 6.
  • a fixing nut 20 is fastened to a portion of the hollow bolt 21 opposing the armature 4. By means of the effect of the so-called double nuts, the hollow bolt 21 is fixed to the arm 6.
  • Each of the linings 2 further has a compression spring 24 and a support shaft 22 having a nut 23.
  • the hollow bolt 21 is supported by the lining 2.
  • the hollow bolt 21 has a hollow section so as to penetrate through the hollow bolt along the center axis thereof.
  • the support shaft 22 is provided in the hollow section.
  • a male screw section is formed on both ends of the support shaft 22.
  • One end 22a of the support shaft 22 is fitted to the female screw section formed in the receiving section 2a of the lining 2.
  • a nut 23 is fitted to the other end of the support shaft 22.
  • the compression spring 24 is supported such that one end of the spring is supported on the nut 23 of the support shaft 22 while the nut 23 is taken as a seat and such that the other end of the spring is supported on the end face of the hollow section of the hollow bolt 21 opposing the armature 4 while the end face is taken as a seat.
  • the hollow bolt 21 is supported by the lining 2 at all times and at a predetermined pressure by means of the spring force of the compression spring 24.
  • One end of the compression spring 7 is supported by the extremity of the arm 6 spaced apart from the pin 9, and the other end of the same is supported at a predetermined position on the coil mount section 5 opposing the extremity.
  • the linings 2 are brought into and out of contact with the brake drum 1 in association with actuation of the armatures 4 stemming from electromagnetic force of the brake coils 3.
  • magnets are provided along an outer peripheral section of the brake drum 1.
  • Stators each of which is wrapped with a coil, are also fixedly disposed with a clearance along an outer periphery of the magnets.
  • a so-called a dynamo electric motor is constituted.
  • the brake drum 1 rotates around an unillustrated min spindle in either direction.
  • a towing rope wrapped around the drum main body provided coaxially with the brake drum 1 is driven, whereby the passenger car and the counterweight, both being connected to the towing rope, are caused to ascend and descend.
  • the parallelism between the armature 4 and the brake coil 3 is adjusted in the same manner as under the known method. More specifically, the parallelism between the armature 4 and the brake coil 3 is checked while the lining 2 is brought into contact with the brake drum 1. In order to adjust the number of metal pieces 12 placed in respective sections in accordance with the degree of the thus-checked parallelism in accordance with the degree of the thus-checked parallelism, the bolts 10 are removed, thereby re-assembling the brake coil 3. As a result, the attitude of the brake coil 3 in relation to the coil mount section 5 is adjusted, whereby the parallelism between the brake coil 3 and the armature 4 is also relatively adjusted so as to fall within a predetermined range.
  • the hollow bolt 21 fitted to the female screw section of the arm 6 is rotated while gaps existing between the linings 2 and the brake drum 1 are being checked through use of a feeler gauge or an optical method with the linings 2 being detached from the brake drum 1.
  • the linings 2 are continuously actuated.
  • rotation of the hollow bolt 21 is stopped.
  • the fixing nut 20 is fastened, to thereby fix the position of the hollow bolt 21. In this way, the gap between the linings 2 and the brake drum 1 is adjusted.
  • the arms 6 are formed so as to be able to adjust a gap between the brake drum 1 and the linings 2 when the linings 2 are detached from the brake drum 1.
  • an operation for adjusting a gap developing between the linings 2 and the brake drum 1 when the linings 2 are detached from the brake drum 1 can be performed with relative ease by means of merely rotating the hollow bolt 21 so as to fasten the fixing nut 20.
  • the hollow bolt 21 is continuously actuated in minute units by means of action of the screw section. Hence, adjustment in a highly-accurate range can be effected.
  • the hollow bolt 21 is supported on each lining 2 by means of the support shaft 22, the nut 23, and the compression sprint 24.
  • a female section is provided on a receiving table 2a of the lining 2, whereby a bolt, such as the hollow bolt 21, can be supported directly on the lining 2. Even in this case, there is yielded the same advantage as that yielded in the first embodiment.
  • Fig. 2 is a schematic cross-sectional view showing an elevator hoisting machine according to a second embodiment of the invention.
  • the coil mount section 5 is fixedly provided in the center of the brake drum 1 within the brake drum 1 in the same manner as in the first embodiment.
  • the brake coils 3 are fastened directly to the coil mount section 5 with use of the bolts 10.
  • the arms 6 are pivotably mounted on the coil mount section 5 with use of the pins 9.
  • the armatures 4 are supported on the portions of the arms 6 opposing the brake coils 3.
  • a plurality of bolts 27 projecting toward the armatures 4 are provided on the respective arms 6.
  • Aplurality of through holes corresponding to the respective bolts 27 are formed in the respective armatures 4.
  • four bolts 27 are provided within the surfaces of the arms 6 opposing the armatures 4.
  • Corresponding four through holes are formed in the surfaces of the armatures 4 opposing the arms 6.
  • the bolts 27 are fitted into the female screw sections formed in the arms 6, and the fixing nuts 28 are fastened so as to come into contact with the corresponding arms 6. As a result, so-called double nuts are formed, whereby the bolts 27 are fixed to the arms 6.
  • the bolts 27 fixed to the arms 6 penetrate through the through holes of the armatures 4, whereby adjustment nuts 29 and fixing nuts 30 are fitted into both sides of each armature 6.
  • the armatures 4 are supported on the arms 6 by means of the bolts 27 and the nuts 28, 29, 30.
  • the linings 2 are fastened to the portions of the arms 6 opposing the brake drum 1, by means of the bolts 11.
  • the compression springs 7 are supported between the extremities of the arms 6 and the coil mount section 5.
  • the linings 2 are brought into and out of contact with the brake drum 1 in associationwith actuation of the armatures 4 by means of the electromagnetic force developing in the brake coil 3.
  • the adjustment nuts 29 are turned in a synchronous manner while the gaps between the linings 2 and the brake drum 1 are checked with the linings 2 being detached from the brake drum 1. As a result, the linings 2 are consecutively actuated with respect to the brake drum 1 while the parallelism between the armatures 4 and the brake coils 3 is maintained in accordance with rotation of the adjustment nuts 29. When the gaps between the linings 2 and the brake drum 1 have fallen into the range of a predetermined value, turning of the adjustment nuts 29 is stopped. The positions of the armatures 4 are fixed by means of fastening the fixing nuts 30. The gap between the linings 2 and the brake drum 1 are adjusted.
  • the arms 6 are formed so as to be able to adjust the gaps between the linings 2 and the brake drum 1 when the linings 2 are detached from the brake drum 1 and the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1.
  • an operation for adjusting the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1 and an operation for adjusting a gap between the linings 2 and the brake drum 1 when they are detached from each other can be performed relatively easily by turning only the nuts 29 and 30 fitted to the respective bolts 27. Since the armatures 4 are consecutively actuated in minute units by means of movement of the screw sections, thereby enabling adjustment in a highly-accurate range.
  • Fig. 3 is a schematic cross-sectional view showing an elevator hoisting machine according to a third embodiment of the invention.
  • the elevator hoisting machine of the third embodiment differs from that of the second embodiment in terms of the structure of a member for supporting the armatures 4 on the arms 6.
  • the brake coils 3 are fastened to the coils mount section 5 with the bolts 10 in the same manner as in the second embodiment. Further, the arms 6 are pivotably disposed by use of the pins 9. The armatures 4 are supported on portions of the arms 6 opposing the brake coils 3.
  • a plurality of bolts 27 are disposed on the arms 6 so as to project toward the armatures 4.
  • a plurality of through holes corresponding to the plurality of bolts 27 are formed in the armatures 4.
  • four bolts 27 are provided on the surfaces of the arms 6 opposing the armatures 4. Further, corresponding four through holes are formed in the surfaces of the armatures 4 opposing the arms 6.
  • the bolts 27 are fitted into the female screw sections formed in the arms 6, and the fixing nuts 28 are fastened so as to come into contact with the arms 6. As a result, so-called double nuts are constituted, and the bolts 27 are fixed to the arms 6.
  • the bolts 27 fixed to the arms 6 penetrate through the through holes of the armatures 4.
  • the adjustment nuts 29 are fitted to the portions of the armatures 4 opposing the brake coils 3.
  • Compression springs 35 are interposed between the armatures 4 and the arms 6.
  • the bolts 27 are inserted into the inner-diameter portions of the compression springs 35.
  • One ends of the compression springs 35 are supported by the nuts 28 remaining in contact with the arms 6, and the other ends of the compression springs 35 are supported on the ends faces of the armatures 4 located in the vicinity of the through holes. In this way, the armature 4 are supported on the arms 6 by means of the bolts 27, the nuts 28, 29, and the compression springs 35.
  • the linings 2 are fastened to the portions of the arms 6 opposing the brake drum 1 with use of the bolts 11.
  • the compression springs 7 are supported between the extremities of the arms 6 and the coil mount section 5.
  • the linings 2 are brought into and out of contact with the brake drum 1 in association with actuation of the armatures 4 by means of electromagnetic force developing in the brake coil 3.
  • the adjustment nuts 29 are turned in a synchronous manner while the gaps between the linings 2 and the brake drum 1 are checked with the linings 2 being detached from the brake drum 1. At that time, the armatures 4 are pressed against the brake coils 3 at all times by means of the spring force of the compression springs 35. As a result, the linings 2 are consecutively actuated with respect to the brake drum 1 in accordance with rotation of the adjustment nuts 29 while the parallelism between the armatures 4 and the brake coils 3 is maintained. When the gaps between the linings 2 and the brake drum 1 have fallen into the range of a predetermined value, turning of the adjustment nuts 29 is stopped. The gap between the linings 2 and the brake drum 1 are adjusted.
  • the arms 6 are formed so as to be able to adjust the gaps between the linings 2 and the brake drum 1 when the linings 2 are detached from the brake drum 1 and the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1.
  • an operation for adjusting the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1 and an operation for adjusting a gap between the linings 2 and the brake drum 1 when they are detached from each other can be performed relatively easily by turning only the nuts 29 fitted to the respective bolts 27. Since the armatures 4 are consecutively actuated in minute units by means of movement of the screw sections, thereby enabling adjustment in a highly-accurate range.
  • Fig. 4 is a schematic cross-sectional view showing an elevator hoisting machine according to a fourth embodiment of the invention.
  • the coil mount section 5 is fixedly disposed in the center of the brake drum 1.
  • the brake coils 3 are supported on the coil mount section 5.
  • a plurality of bolts 37 projecting toward the brake coils 3 are provided on the coil mount section 5.
  • a plurality of through holes corresponding to the respective bolts 27 are formed in the respective brake coils 3.
  • four bolts 37 are provided within the surfaces of the coil mount section 5 opposing the brake coils 3.
  • Corresponding four through holes are formed in the surfaces of the brake coils 3 opposing the coil mount section 5.
  • the bolts 37 are fitted into the female screw sections formed in the coil mount section 5, and the fixing nuts 38 are fastened so as to come into contact with the coil mount section 5. As a result, so-called double nuts are formed, whereby the bolts 37 are fixed to the coil mount section 5.
  • the bolts 37 fixed to the coil mount section 5 penetrate through the through holes of the brake coils 3, whereby adjustment nuts 39 and fixing nuts 40 are fitted into both sides of the respective brake coils 3.
  • the brake coils 3 are supported on the coil mount section 5 by means of the bolts 37 and the nuts 38, 39, 40.
  • the arms 6 are provided on the coil mount section 5 in a pivotable manner with use of the pins 9.
  • the armatures 4 are fastened directly to portions of the arms 6 opposing the brake coils 3 with use of the bolts 8.
  • the linings 2 are fastened to the portions of the arms 6 opposing the brake drum 1, by means of the bolts 11.
  • the compression springs 7 are supported between the extremities of the arms 6 and the coil mount section 5.
  • the linings 2 are brought into and out of contact with the brake drum 1 in association with actuation of the armatures 4, as in the case of the previous embodiments, by means of the electromagnetic force developing in the brake coil 3.
  • the adjustment nuts 39 are turned in a synchronous manner while the gaps between the linings 2 and the brake drum 1 are checked with the linings 2 being detached from the brake drum 1. As a result, the linings 2 are consecutively actuated with respect to the brake drum 1 while the parallelism between the armatures 4 and the brake coils 3 is maintained in accordance with rotation of the adjustment nuts 29. When the gaps between the linings 2 and the brake drum 1 have fallen into the range of a predetermined value, turning of the adjustment nuts 39 is stopped. The positions of the brake coils 3 are fixed by means of fastening the fixing nuts 40. The gap between the linings 2 and the brake drum 1 is adjusted.
  • the coil mount section 5 is formed so as to be able to adjust the gaps between the linings 2 and the brake drum 1 when the linings 2 are detached from the brake drum 1 and the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1.
  • an operation for adjusting the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1 and an operation for adjusting a gap between the linings 2 and the brake drum 1 when they are detached from each other can be performed relatively easily by turning only the nuts 39 and 40 fitted to the respective bolts 37. Since the brake coils 3 are consecutively actuated in minute units by means of movement of the screw sections, thereby enabling adjustment in a highly-accurate range.
  • Fig. 5 is a schematic cross-sectional view showing an elevator hoisting machine according to a fifth embodiment of the invention.
  • the elevator hoisting machine of the fifth embodiment differs from that of the fourth embodiment in terms of the configuration of the member supporting the brake coils 3 on the coil mount section 5.
  • the brake coils 3 are supported on the coil mount section 5.
  • the plurality of bolts 37 projecting toward the brake coils 3 are provided on the coil mount section 5.
  • a plurality of through holes corresponding to the respective bolts 37 are formed in the respective brake coils 3.
  • four bolts 37 are provided within the surfaces of the coil mount section 5 opposing the brake coils 3.
  • Corresponding four through holes are formed in the surfaces of the brake coils 3 opposing the coil mount section 5.
  • the bolts 37 are fitted into the female screw sections formed in the coil mount section 5, and the fixing nuts 38 are fastened so as to come into contact with the coil mount section 5. As a result, so-called double nuts are formed, whereby the bolts 37 are fixed to the coil mount section 5.
  • the bolts 37 fixed to the coil mount section 5 penetrate through the through holes of the brake coils 3, whereby adjustment nuts 39 are fitted to the portions of the brake coils 3 opposing the armatures 4.
  • the compression springs 42 are interposed between the brake coils 3 and the coil mount section 5.
  • the bolts 37 are fitted into the internal diameter sections of the compression springs 42.
  • the compression springs 43 supported by the nuts 38 remaining in contact with the coil mount section 5 through the bolts 37.
  • the compression springs 44 are supported on the end faces of the brake coils 3 located in the vicinity of the through holes. In this way, the brake coils 3 are supported on the coil mount section 5 by means of the bolts 37 and the nuts 38, 39, and the compression springs 42.
  • the arms 6 are provided on the coil mount section 5 in a pivotable manner with use of the pins 9.
  • the armatures 4 are fastened directly to portions of the arms 6 opposing the brake coils 3 with use of the bolts 8.
  • the linings 2 are fastened to the portions of the arms 6 opposing the brake drum 1, by means of the bolts 11.
  • the compression springs 7 are supported between the extremities of the arms 6 and the coil mount section 5.
  • the linings 2 are brought into and out of contact with the brake drum 1 in associationwith actuation of the armatures 4, as in the case of the previous embodiments, by means of the electromagnetic force developing in the brake coil 3.
  • the adjustment nuts 39 are turned in a synchronous manner while the gaps between the linings 2 and the brake drum 1 are checked with the linings 2 being detached from the brake drum 1. At this time, the brake coils 3 are pressed against the armatures 4 at all times by means of the spring force of the compression springs 42. As a result, the linings 2 are consecutively actuated with respect to the brake drum 1 while the parallelism between the armatures 4 and the brake coils 3 is maintained in accordance with rotation of the adjustment nuts 39. When the gaps between the linings 2 and the brake drum 1 have fallen into the range of a predetermined value, turning of the adjustment nuts 39 is stopped. The gap between the linings 2 and the brake drum 1 is adjusted.
  • the coil mount section 5 is formed so as to be able to adjust the gaps between the linings 2 and the brake drum 1 when the linings 2 are detached from the brake drum 1 and the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1, as in the case of the fourth embodiment.
  • an operation for adjusting the parallelism between the armatures 4 and the brake coils 3 when the linings 2 are in contact with the brake drum 1 and an operation for adjusting a gap between the linings 2 and the brake drum 1 when they are detached from each other can be performed relatively easily by turning only the nuts 39 fitted to the respective bolts 37. Since the brake coils 3 are consecutively actuated in minute units by means of movement of the screw sections, thereby enabling adjustment in a highly-accurate range.
  • the invention is applied to a so-called internal-expanding brake, in which a brake section is housed in a brake drum, thereby bringing the linings against an interior wall of the brake drum.
  • the invention can also be applied to an external expanding brake in which linings are brought into contact with an exterior wall of a brake drum.
  • the invention can also be applied to a disk brake in which linings are brought into contact with side walls of a brake drum. Even in these cases, there are yielded the same effects as those yielded in the previous embodiments.
  • arms for supporting linings are provided with a mechanism for adjusting gaps between a brake drum and linings, the linings being provided so as to be removable from the brake drum, when the linings are detached from the brake drum.
  • the gap between the linings and the brake drum can be adjusted without removal of constituent members and within a short period of time. Therefore, the elevator hoisting machine is utilized as an elevator hoisting machine having superior workability and suitable for mass production.
  • a female screw section is formed in an arm so as to penetrate through the arm.
  • a bolt formed integrally with the lining is fitted into the female screw section, thereby constituting a gap adjustment mechanism.
  • the bolt is imparted with a hollow structure, and a support shaft and a compression spring are provided in the hollow section, whereby the bolt is formed integrally with the lining.
  • a gap between the lining and the brake drum can be readily adjusted within a short period of time.
  • the lining is actuated consecutively in minute units, thereby enabling highly-accurate adjustment of a gap. Therefore, the elevator hoisting machine is utilized as an elevator hoisting machine having superior workability and suitable for mass production.
  • an arm for supporting the lining and an armature is further provided with a mechanism for adjusting a gap between the lining and the brake drum when the lining is detached from the drum, and a mechanism for adjusting the parallelism between the armature and the brake coil when the lining is in contact with the brake drum.
  • a plurality of bolts projecting toward the armature are provided on the arm.
  • Two nuts are screwed onto each bolt so as to clamp the armature from both sides, thereby constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • adjustment of a gap between the lining and the brake drum and adjustment of the parallelism between the armature and the brake coil can be readily performed within a short period of time. Since the armature is consecutively actuated in minute units by means of screwing action, highly-accurate gap adjustment and parallelism adjustment can be achieved. Therefore, the elevator hoisting machine is utilized as an elevator hoisting machine having superior workability and suitable for mass production.
  • a plurality of bolts projecting toward the armature are provided on the arm.
  • a nut is screwed onto one side of each bolt, and a compression spring for loading the armature is provided on the other side of the bolt with the armature interposed between the bolt and the spring, thereby constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • adjustment of a gap between the lining and the brake drum and adjustment of the parallelism between the armature and the brake coil can be readily performed within a short period of time. Since the armature is consecutively actuated in minute units by means of screwing action, highly-accurate gap adjustment and parallelism adjustment can be achieved. Therefore, the elevator hoisting machine is utilized as an elevator hoisting machine having superior workability and suitable for mass production.
  • a coil mount section for supporting brake coils is further provided with a mechanism for adjusting a gap between the lining and the brake drum when the lining is detached from the drum, and a mechanism for adjusting the parallelism between the armature and the brake coil when the lining is in contact with the brake drum.
  • a plurality of bolts projecting toward the armature are provided on the coil mount section.
  • Two nuts are screwed onto each bolt such that the brake coil is interposed between the nuts, thus constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • adjustment of a gap between the lining and the brake drum and adjustment of the parallelism between the armature and the brake coil can be readily performed within a short period of time. Since the armature is consecutively actuated in minute units by means of screwing action, highly-accurate gap adjustment and parallelism adjustment can be achieved. Therefore, the elevator hoisting machine is utilized as an elevator hoisting machine having superior workability and suitable for mass production.
  • a plurality of bolts pro jecting toward the armature are provided on the coil mount section.
  • a nut is screwed onto one side of each bolt, and a compression spring for loading the brake coil is provided on the other side of the bolt with the brake coil interposed between the bolt and the spring, thereby constituting a gap adjustment mechanism and a parallelism adjustment mechanism.
  • adjustment of a gap between the lining and the brake drum and adjustment of the parallelism between the armature and the brake coil can be readily performed within a short period of time. Since the armature is consecutively actuated in minute units by means of screwing action, highly-accurate gap adjustment and parallelism adjustment can be achieved. Therefore, the elevator hoisting machine is utilized as an elevator hoisting machine having superior workability and suitable for mass production.
  • the invention also relates to an elevator system having the foregoing improved elevator hoisting machine.
  • a brake section of the elevator hoisting machine in the elevator system can be readily adjusted within a short period of time. Therefore, the elevator hoisting machine is utilized as an elevator system having superior workability and suitable for mass production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)
EP01945711A 2001-06-29 2001-06-29 Systeme de levage d'ascenseur et ascenseur Expired - Lifetime EP1431232B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/005632 WO2003002448A1 (fr) 2001-06-29 2001-06-29 Systeme de levage d'ascenseur et ascenseur

Publications (3)

Publication Number Publication Date
EP1431232A1 true EP1431232A1 (fr) 2004-06-23
EP1431232A4 EP1431232A4 (fr) 2009-04-22
EP1431232B1 EP1431232B1 (fr) 2012-11-07

Family

ID=11737500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01945711A Expired - Lifetime EP1431232B1 (fr) 2001-06-29 2001-06-29 Systeme de levage d'ascenseur et ascenseur

Country Status (6)

Country Link
EP (1) EP1431232B1 (fr)
JP (1) JP4993650B2 (fr)
KR (1) KR100498674B1 (fr)
CN (1) CN1242910C (fr)
TW (1) TW499388B (fr)
WO (1) WO2003002448A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2308788A1 (fr) * 2008-06-02 2011-04-13 Mitsubishi Electric Corporation Dispositif de freinage pour appareil élevateur
US20120234632A1 (en) * 2010-02-10 2012-09-20 Mitsubishi Electric Corporation Elevator hoisting machine braking apparatus
EP2206674A4 (fr) * 2007-10-02 2013-12-11 Mitsubishi Electric Corp Élévateur d'ascenseur et système de freinage
EP2868617A1 (fr) * 2013-10-29 2015-05-06 Kone Corporation Dispositif d'amortissement pour amortir le bruit d'ouverture d'un frein de machine de levage d'ascenseur, machine de levage d'ascenseur et ascenseur
US10479645B2 (en) 2015-06-29 2019-11-19 Otis Elevator Company Electromagnetic brake system for elevator application

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011004424A1 (fr) * 2009-07-07 2011-01-13 三菱電機株式会社 Dispositif de freinage pour treuil d'ascenseur
JP2011037621A (ja) * 2009-08-18 2011-02-24 Mitsubishi Electric Corp エレベータ巻上機用ブレーキ装置
CA2811990C (fr) * 2010-08-23 2023-03-21 Dean Y. Maeda Aminopyridinecarboxamides et aminopyrimidinecarboxamides utilisables en tant que modulateurs des recepteurs cxcr2
JP5626999B2 (ja) * 2011-03-02 2014-11-19 東芝エレベータ株式会社 ブレーキスイッチ調整方法
JP5432962B2 (ja) * 2011-08-25 2014-03-05 株式会社日立製作所 エレベータ装置用巻上機の制御装置、制御方法及び制御装置の改修方法
JP6243683B2 (ja) * 2013-09-25 2017-12-06 株式会社日立ビルシステム エレベータのドラムブレーキの点検装置
CN106321688B (zh) * 2016-11-22 2018-05-04 重庆凸普科技有限公司 一种断电式电磁铁鼓刹
CN111498724A (zh) * 2020-04-29 2020-08-07 山东交通学院 一种起重机机械松闸装置
JP7031776B1 (ja) * 2021-04-09 2022-03-08 三菱電機株式会社 ブレーキ装置及びエレベータ用巻上機
CN114104909B (zh) * 2021-10-25 2023-06-16 洛阳百克特科技发展股份有限公司 一种摩擦轮衬垫结构及钢丝绳张力监测机构
CN116969369B (zh) * 2023-09-22 2024-01-09 沈阳蓝光驱动技术有限公司 一种电梯曳引机制动装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1860394A (en) * 1930-04-14 1932-05-31 Haughton Elevator & Machine Co Adjustable brake stand

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS472330B1 (fr) * 1966-08-03 1972-01-22
JPS63133650U (fr) * 1987-02-25 1988-09-01
JP3549990B2 (ja) * 1997-01-22 2004-08-04 三菱電機株式会社 ブレーキ装置
JP3537348B2 (ja) * 1999-04-05 2004-06-14 三菱電機株式会社 トラクション式エレベーター用巻上機
JP2001072358A (ja) * 1999-07-02 2001-03-21 Teijin Seiki Co Ltd エレベータ用巻上げ装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1860394A (en) * 1930-04-14 1932-05-31 Haughton Elevator & Machine Co Adjustable brake stand

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO03002448A1 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2206674A4 (fr) * 2007-10-02 2013-12-11 Mitsubishi Electric Corp Élévateur d'ascenseur et système de freinage
EP2308788A1 (fr) * 2008-06-02 2011-04-13 Mitsubishi Electric Corporation Dispositif de freinage pour appareil élevateur
EP2308788A4 (fr) * 2008-06-02 2014-01-22 Mitsubishi Electric Corp Dispositif de freinage pour appareil élevateur
US20120234632A1 (en) * 2010-02-10 2012-09-20 Mitsubishi Electric Corporation Elevator hoisting machine braking apparatus
US9016439B2 (en) 2010-02-10 2015-04-28 Mitsubishi Electric Corporation Elevator hoisting machine braking apparatus
EP2868617A1 (fr) * 2013-10-29 2015-05-06 Kone Corporation Dispositif d'amortissement pour amortir le bruit d'ouverture d'un frein de machine de levage d'ascenseur, machine de levage d'ascenseur et ascenseur
US10479645B2 (en) 2015-06-29 2019-11-19 Otis Elevator Company Electromagnetic brake system for elevator application

Also Published As

Publication number Publication date
KR100498674B1 (ko) 2005-07-01
CN1242910C (zh) 2006-02-22
JPWO2003002448A1 (ja) 2004-10-14
EP1431232B1 (fr) 2012-11-07
EP1431232A4 (fr) 2009-04-22
CN1450974A (zh) 2003-10-22
WO2003002448A1 (fr) 2003-01-09
KR20030025304A (ko) 2003-03-28
TW499388B (en) 2002-08-21
JP4993650B2 (ja) 2012-08-08

Similar Documents

Publication Publication Date Title
EP1431232A1 (fr) Systeme de levage d'ascenseur et ascenseur
JP5985048B2 (ja) ブレーキ装置、それを用いたエレベータ用巻上機、及びブレーキ装置の緩衝反力調整方法
CN107848761B (zh) 电梯用曳引机和电梯
JP5573217B2 (ja) 電磁ブレーキ
JP5911042B2 (ja) ブレーキ装置、及びそれを用いたエレベータ用巻上機
KR101392054B1 (ko) 엘리베이터 권상기의 제동장치
JPH11299201A (ja) エレベ―タやリフト駆動機構等のための電気機械
KR20040094911A (ko) 전자기 드럼 브레이크
JP3397767B2 (ja) かご型電動機におけるディスクブレーキの調整方法および装置
EP1538123B1 (fr) Dispositif de freinage pour appareil de levage d'ascenseur
JP6997225B2 (ja) 電磁ブレーキ装置、巻上機及びエレベーター
JP4184774B2 (ja) エレベーター用巻上機
JP2000095460A (ja) エレベータのディスクブレーキ
JPS59739B2 (ja) 摩擦式電磁連結装置
JP2003246570A (ja) 巻上機及びエレベータ装置
JPH11230203A (ja) 無励磁作動形電磁ブレーキ
JPWO2007004301A1 (ja) 制動・伝達機器の組立調整方法及び組立調整装置
JP3900919B2 (ja) 無励磁作動形電磁ブレーキおよびこれを備えたモータならびにモータの製造方法
JPS6123696Y2 (fr)
JP3375829B2 (ja) 電磁制動装置
WO2020255328A1 (fr) Treuil d'ascenseur
JPWO2007000810A1 (ja) エレベータのブレーキ装置
JPS6033724Y2 (ja) ブレ−キ付回転電機
JP2005178970A (ja) エレベーター用巻上機
JP2006193248A (ja) エレベータ用巻上機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030226

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MITSUBISHI DENKI KABUSHIKI KAISHA

A4 Supplementary search report drawn up and despatched

Effective date: 20090325

RIC1 Information provided on ipc code assigned before grant

Ipc: B66D 5/30 20060101ALI20090319BHEP

Ipc: B66B 11/08 20060101AFI20030113BHEP

17Q First examination report despatched

Effective date: 20090911

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 60147327

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B66B0011080000

Ipc: B66D0005080000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: B66D 5/30 20060101ALI20120523BHEP

Ipc: B66D 5/08 20060101AFI20120523BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 60147327

Country of ref document: DE

Effective date: 20130103

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130808

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 60147327

Country of ref document: DE

Effective date: 20130808

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 60147327

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 60147327

Country of ref document: DE

Effective date: 20141107

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200617

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 60147327

Country of ref document: DE