CN108545586A - Elevator counterweight and car automatic-balancing system - Google Patents

Elevator counterweight and car automatic-balancing system Download PDF

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Publication number
CN108545586A
CN108545586A CN201810718802.4A CN201810718802A CN108545586A CN 108545586 A CN108545586 A CN 108545586A CN 201810718802 A CN201810718802 A CN 201810718802A CN 108545586 A CN108545586 A CN 108545586A
Authority
CN
China
Prior art keywords
car
chain
cross
counterweight
drive
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.)
Pending
Application number
CN201810718802.4A
Other languages
Chinese (zh)
Inventor
吴家集
赵恒�
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.)
Guangdong Dais Elevator Co Ltd
Original Assignee
Guangdong Dais Elevator Co Ltd
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 Guangdong Dais Elevator Co Ltd filed Critical Guangdong Dais Elevator Co Ltd
Priority to CN201810718802.4A priority Critical patent/CN108545586A/en
Publication of CN108545586A publication Critical patent/CN108545586A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00Hoistway equipment
    • B66B17/12Counterpoises
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00Other common features of elevators
    • B66B7/06Arrangements of ropes or cables
    • B66B7/10Arrangements of ropes or cables for equalising rope or cable tension

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The invention discloses a kind of elevator counterweights and car automatic-balancing system, including elevator framework, car, car drive chain case, counterweight drive chain case, weight controller, cross chain drive mechanism, cross chain and traction machine, the car drive chain case is mounted on car, one end of the cross chain is connected with car drive chain case, the other end is connected with counterweight drive chain case, the weight controller, cross chain drive mechanism and traction machine are installed in elevator framework, the weight controller is connected with car, the weight controller is electrically connected with cross chain drive mechanism, the cross chain drive mechanism works according to the feedback signal of weight controller, the traction machine is separately connected with car and counterweight drive chain case, the cross chain and the engagement connection of cross chain drive mechanism.The present invention can realize the weight balancing of counterweight drive chain case and car and car drive chain case, reduce the required driving force of elevator traction sheave, reduce energy consumption.

Description

Elevator counterweight and car automatic-balancing system
Technical field
The present invention relates to elevator design fields, more particularly, to a kind of elevator counterweight and car automatic-balancing system.
Background technology
Elevator is that one kind serving several specific floors in building, and car runs the rigid rail perpendicular to horizontal plane The permanent transporting equipment of road movement, currently, elevator is applied on a large scale in the buildings such as house, villa, mansion.In order to reduce electricity The load of terraced traction sheave saves the energy, can configure counterweight in usual elevator, carry out the weight that relative equilibrium falls car.
But the weight of the counterweight of traditional elevator is changeless at present, i.e., counterweight is presented static, can only be balanced Fall the weight under car some state, and when the car is fully loaded, the weight of car is maximum, and when elevator no-load, the weight of counterweight is then The weight of maximum, certain one side is excessive, all traction sheave can be caused to need larger driving force, and energy consumption is big, meanwhile, for being promoted The steel wire rope of car is easy to skid, and increases insecurity.
Invention content
Energy consumption can be reduced the purpose of the present invention is to provide a kind of, the strong elevator counterweight of security reliability is put down automatically with car Balance system.
According to an aspect of the invention, there is provided a kind of elevator counterweight and car automatic-balancing system, including elevator machine Frame, car, car drive chain case, counterweight drive chain case, weight controller, cross chain drive mechanism, cross chain and traction machine, institute Car drive chain case is stated on car, one end of the cross chain is connected with car drive chain case, the other end and counterweight chain Bar case is connected, and the weight controller, cross chain drive mechanism and traction machine are installed in elevator framework, the traction Machine is separately connected with car and counterweight drive chain case, and the weight controller is connected with car, the weight controller and cross Chain drive mechanism is electrically connected, and the cross chain drive mechanism works according to the feedback signal of weight controller, the cross Chain and the engagement connection of cross chain drive mechanism.
The beneficial effects of the invention are as follows:Counterweight drive chain case acts as the effect of counterweight in the present invention, and car drive chain case with Car is installed together the part for becoming car, and traction machine is used to drive the movement of the two, and weight controller can be anti- The balance between car and the total weight and the weight of counterweight drive chain case of car drive chain case is presented, cross chain driving machine is driven Structure is according to the feedback operation of weight controller, to change in the quantity of the cross chain on car or counterweight drive chain case, to Change car and the weight of car drive chain case or the weight of counterweight drive chain case, to realize the balance of car and counterweight drive chain case, The present invention can realize the weight balancing of counterweight drive chain case and car and car drive chain case as a result, reduce required for elevator traction sheave Driving force, reduce energy consumption, meanwhile, eliminate the steel wire rope slipping phenomenon of traction machine, improve elevator safety.
In some embodiments, the weight controller include hoist ropes, spring, holder, movable plate, underloading stroke open It closes and heavily loaded travel switch, the hoist ropes is connected with movable plate, car, counterweight drive chain case and traction machine respectively, the bullet One end of spring is fixedly connected with holder, and the other end is fixedly connected with movable plate, the underloading travel switch and heavily loaded travel switch It is installed on holder, the movable plate is located between underloading travel switch and heavily loaded travel switch, and the movable plate is mounted on On holder.Travel switch and heavily loaded travel switch are lightly loaded by setting as a result, adapt to car too escheat be counterweight drive chain case too The different situations of weight, flexibility are strong.
In some embodiments, the holder includes bottom plate, switch frame and guide post, and the movable plate is sleeved on guide post On, and can be installed on bottom plate in activity, the switch frame and guide post on guide post, the underloading travel switch and heavily loaded stroke Switch is installed on switch frame.Switch frame can be convenient for the fixation of underloading travel switch and heavily loaded travel switch, guide post energy as a result, Convenient for the translation of movable plate, and ensure the mobile reliability of movable plate.
In some embodiments, the guide post is equipped with limit protrusion, and the limit protrusion is for preventing movable plate de- From guide post.Limit protrusion is avoided that the excessive movement of movable plate.
In some embodiments, the cross chain drive mechanism includes cross driving wheel and is connect with cross driving wheel Decelerating motor, be along the circumferential direction staggeredly equipped at intervals with horizontal channel and vertical trench, the water outside the cross driving wheel The axis parallel of flat groove and vertical trench with cross driving wheel ontology, along circle between adjacent horizontal channel and vertical trench Circumferential direction is mutually perpendicular to.The setting of horizontal channel and vertical trench can be convenient for the installation of cross chain, decelerating motor energy side as a result, Just the rotation of cross driving wheel is realized.
In some embodiments, the cross chain is cross-linked group by multiple horizontal chain links and multiple vertical chain links At the horizontal chain link with horizontal channel for engaging, and the vertical chain link with vertical trench for engaging.It can guarantee as a result, Cross chain can tightly engage in cross driving wheel, reduce the de- chain probability of cross chain.
In some embodiments, the counterweight chain case includes clump weight and counterweight support, and the clump weight is placed on In counterweight support, the counterweight support is equipped with hole, and the hole matches with cross chain, and one end of the cross chain passes through Hole, and extend into counterweight support, the cross chain is connected with clump weight.Cross chain on the one hand can be prevented de- as a result, From counterweight support, the damage of the present invention is caused, on the other hand, counterweight support can be convenient for the placement and movement of cross chain, ensure The realizability of the variation of the total weight of counterweight drive chain case.
Description of the drawings
Fig. 1 is the elevator counterweight of one embodiment of the present invention and facing for the schematic diagram of car automatic-balancing system Figure.
Fig. 2 is the front view of the elevator counterweight of Fig. 1 and the schematic diagram of the weight controller of car automatic-balancing system.
Fig. 3 is the elevator counterweight of Fig. 1 and facing for the schematic diagram of the cross chain drive mechanism of car automatic-balancing system Figure.
Fig. 4 is the left view of the elevator counterweight of Fig. 3 and the schematic diagram of the cross chain drive mechanism of car automatic-balancing system Figure.
Specific implementation mode
The invention will now be described in further detail with reference to the accompanying drawings.
With reference to 1-Fig. 4 of figure, elevator counterweight of the invention and car automatic-balancing system, including elevator framework 1, car 2, Car drive chain case 3, counterweight drive chain case 4, weight controller 5, cross chain drive mechanism 6, cross chain 7 and traction machine 8.
Weight controller 5 includes hoist ropes 51, spring 52, holder 53, movable plate 54, underloading travel switch 55 and heavily loaded row Cheng Kaiguan 56, holder 53 include then bottom plate 531, switch frame 532 and guide post 533.One end of hoist ropes 51 passes through with movable plate 54 Screw is fixedly connected, and hoist ropes 51 is also around on the lifting wheel at 2 top of car, to realize the connection with car 2, hoist ropes 51 The other end be bolted to connection with car drive chain case 3, one end of spring 52 is fixedly connected with holder 53 by screw, separately One end is fixedly connected with movable plate 54 by screw, and switch frame 532 and guide post 533 are mounted on bottom plate 531 by being welded and fixed On, and be lightly loaded travel switch 55 and heavily loaded travel switch 56 and be mounted by means of bolts on the switch frame 532 of holder 53, it is living Movable plate 4 is sleeved on the guide post 533 of holder 53, and can be moved up and down on the guide post 533 of holder 53, and the movable plate after installation 54 are located between underloading travel switch 55 and heavily loaded travel switch 56, in addition, being additionally provided with limit protrusion 5331 on guide post 533, limit Position protrusion 5331 is for preventing movable plate 54 to be detached from guide post 533, and bottom plate 531 is mounted by means of bolts in elevator framework 1.
Cross chain drive mechanism 6 includes cross driving wheel 61 and the decelerating motor 62 being connect with cross driving wheel 61, makes Obtaining decelerating motor 62 can drive cross driving wheel 61 to rotate.Decelerating motor 62 is mounted by means of bolts in elevator framework 1, Along the circumferential direction staggeredly it is equipped at intervals with horizontal channel 611 and vertical trench 612,611 He of horizontal channel outside cross driving wheel 61 Axis parallel of the vertical trench 612 with cross driving wheel ontology 61, between adjacent horizontal channel 611 and vertical trench 612 Along the circumferential direction it is mutually perpendicular to.In addition, underloading travel switch 55 in weight controller 5 and heavily loaded travel switch 56 are and cross Chain drive mechanism 6 is electrically connected so that cross chain drive mechanism 6 can be according to underloading travel switch 55 and heavily loaded travel switch 56 The signal rotation transmitted.
Cross chain 7 is then cross-linked and is formed by multiple horizontal chain links 71 and multiple vertical chain links 72, horizontal chain link 71 with Horizontal channel 611 engages, and vertical chain link 72 is engaged with vertical trench 612, i.e., so that cross chain item 7 and cross chain drive mechanism 6 engagement connections.
Counterweight drive chain case 4 includes clump weight 41 and counterweight support 42, and clump weight 41 is placed in counterweight support 42, counterweight branch The top of frame 42 is equipped with hole, and the size in hole matches with the size 7 of cross chain so that the cross chain 7 of single can pass through Hole and it is unobstructed, one end of cross chain 7 passes through hole, and extend into counterweight support 42, above-mentioned end of cross chain 7 with Clump weight 41 is fixedly connected, and clump weight 41 can not through hole, i.e. cross chain 7 can not completely disengage counterweight support 42.
Car drive chain case 4 is to be commonly used in the drive chain case for loading chain, the other end and the car drive chain case of cross chain 7 4 are fixedly connected, and car drive chain case 4 is mounted by means of bolts on car 2.
Traction machine 8 is mounted by means of bolts on the top of elevator framework 1, and the hoist ropes 51 in weight controller 5 Be around on the traction sheave of traction machine 8 so that traction machine 8 can by drive hoist ropes 51 come drive car 2 and counterweight drive chain case 4 in It is moved in elevator framework 1.
And when car 2 is under high load condition, then the weight of car 2 is larger, since it acts on the power of hoist ropes 21 It is larger so that spring 52 is compressed, and is contacted with heavily loaded travel switch 56 until movable plate 54 is moved down, heavily loaded travel switch 56 is sent In signal to decelerating motor 62, then the rotation of decelerating motor 62 drives cross chain 7 to be moved toward 4 direction of counterweight drive chain case, then cross Chain 7 can accumulate in counterweight drive chain case 4, meanwhile, the cross chain 7 in car drive chain case 3 can be reduced, i.e. counterweight drive chain case 4 Quality increase, the quality of car drive chain case 3 reduces, when the gross mass of car 2 and car drive chain case 3 and counterweight drive chain case 4 When gross mass balances, 52 stress of spring reduces, and starts diastole so that movable plate 54 is no longer contacted with heavily loaded travel switch 56, is subtracted Speed motor 62 is no longer influenced by signal and stops operating, and final car 2 and car drive chain case 3 come back to flat with counterweight drive chain case 4 Weighing apparatus state.
And when car 2 is in the case of low-load, then the weight of counterweight drive chain case 4 is larger, since it acts on hoist ropes 21 power is larger, and spring 52 does not stress extensive diastole, is contacted until movable plate 54 moves up and be lightly loaded travel switch 55, underloading row Cheng Kaiguan 55 is transmitted a signal in decelerating motor 62, then the rotation of decelerating motor 62 drives cross chain 7 toward 3 direction of car drive chain case Mobile, then cross chain 7 can accumulate in car drive chain case 3, meanwhile, the cross chain 7 in counterweight drive chain case 4 can be reduced, i.e., The quality of car drive chain case 3 increases, and the quality of counterweight drive chain case 4 reduces, when the gross mass of car 2 and car drive chain case 3 with match When the gross mass balance of weight drive chain case 4,52 stress of spring increases, and starts to compress so that movable plate 54 is no longer opened with underloading stroke 55 contacts are closed, decelerating motor 62 is no longer influenced by signal and stops operating, final car 2 and car drive chain case 3 and counterweight drive chain case 4 Come back to equilibrium state.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention It encloses.

Claims (7)

1. elevator counterweight and car automatic-balancing system, which is characterized in that including elevator framework (1), car (2), car chain Case (3), counterweight drive chain case (4), weight controller (5), cross chain drive mechanism (6), cross chain (7) and traction machine (8), The car drive chain case (4) is mounted on car (2), and one end of the cross chain (7) is connected with car drive chain case (3), The other end is connected with counterweight drive chain case (4), the weight controller (5), cross chain drive mechanism (6) and traction machine (8) It is installed in elevator framework (1), the weight controller (5) is connected with car (2), the traction machine (8) and car (2) It is separately connected with counterweight drive chain case (4), the weight controller (5) is electrically connected with cross chain drive mechanism (6), the cross Chain drive mechanism (6) works according to the feedback signal of weight controller (5), the cross chain (7) and cross chain drive Mechanism (6) engagement connection.
2. elevator counterweight according to claim 1 and car automatic-balancing system, which is characterized in that the weight controller (5) include hoist ropes (51), spring (52), holder (53), movable plate (54), underloading travel switch (55) and heavily loaded travel switch (56), the hoist ropes (51) is connected with movable plate (54), car (2), counterweight drive chain case (4) and traction machine (8) respectively, institute The one end for stating spring (52) is fixedly connected with holder (53), and the other end is fixedly connected with movable plate (54), and the underloading stroke is opened It closes (55) and heavily loaded travel switch (56) is installed on holder (53), the movable plate (54) is located at underloading travel switch (55) Between heavily loaded travel switch (56), the movable plate (54) is mounted on holder (53).
3. elevator counterweight according to claim 2 and car automatic-balancing system, which is characterized in that holder (53) packet Bottom plate (531), switch frame (532) and guide post (533) are included, the movable plate (54) is sleeved on guide post (533), and can be in guide post (533) movable on, the switch frame (532) and guide post (533) are installed on bottom plate (531), the underloading travel switch (55) it is installed on switch frame (53) with heavily loaded travel switch (56).
4. elevator counterweight according to claim 3 and car automatic-balancing system, which is characterized in that the guide post (533) It is equipped with limit protrusion (5331), the limit protrusion (5331) is for preventing movable plate (54) to be detached from guide post (533).
5. elevator counterweight according to claim 1 and car automatic-balancing system, which is characterized in that the cross chain drives Motivation structure (6) includes cross driving wheel (61) and the decelerating motor (62) being connect with cross driving wheel (61), ten word drive Wheel (61) is external to be along the circumferential direction staggeredly equipped at intervals with horizontal channel (611) and vertical trench (612), the horizontal channel (611) and axis parallel of the vertical trench (612) with cross driving wheel ontology (61) it, adjacent horizontal channel (611) and hangs down Straight flute is along the circumferential direction mutually perpendicular between (612).
6. elevator counterweight according to claim 5 and car automatic-balancing system, which is characterized in that the cross chain (7) it is cross-linked and is formed by multiple horizontal chain links (71) and multiple vertical chain links (72), the horizontal chain link (71) is used for and water Flat groove (611) engagement, the vertical chain link (72) with vertical trench (612) for engaging.
7. elevator counterweight according to claim 1 and car automatic-balancing system, which is characterized in that the counterweight drive chain case (4) include clump weight (41) and counterweight support (42), the clump weight (41) is placed in counterweight support (42), the counterweight branch Frame (42) is equipped with hole, and the hole matches with cross chain (7), and one end of the cross chain (7) passes through hole, and extend into In counterweight support (42), the cross chain (7) is connected with clump weight (41).
CN201810718802.4A 2018-07-03 2018-07-03 Elevator counterweight and car automatic-balancing system Pending CN108545586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810718802.4A CN108545586A (en) 2018-07-03 2018-07-03 Elevator counterweight and car automatic-balancing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810718802.4A CN108545586A (en) 2018-07-03 2018-07-03 Elevator counterweight and car automatic-balancing system

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CN108545586A true CN108545586A (en) 2018-09-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109879136A (en) * 2019-02-19 2019-06-14 浙江省特种设备检验研究院 Emergency staircase
CN111779634A (en) * 2020-07-15 2020-10-16 贵州师范大学 Wind power generation equipment

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882968A (en) * 1973-06-01 1975-05-13 Westinghouse Electric Corp Elevator system
US4230205A (en) * 1978-05-10 1980-10-28 Westinghouse Electric Corp. Elevator system
JPH05294581A (en) * 1992-04-17 1993-11-09 Hitachi Building Syst Eng & Service Co Ltd Method of replacing main cable for elevator
JPH06293483A (en) * 1993-04-07 1994-10-21 Ogawa Seisakusho:Kk Regulating mechanism for tension of cable and the like
JPH09110336A (en) * 1995-10-13 1997-04-28 Mitsubishi Denki Bill Techno Service Kk Elevator
JP2005187156A (en) * 2003-12-25 2005-07-14 Mitsubishi Electric Corp Elevator
CN101979302A (en) * 2010-10-27 2011-02-23 曹锦泉 Variable counterweight elevator and variable counterweight hydraulic elevator
JP2011116471A (en) * 2009-12-01 2011-06-16 Mitsubishi Electric Corp Elevator apparatus
CN202429839U (en) * 2011-12-16 2012-09-12 苏州市东沪电缆有限公司 False following elevator cable
CN202657784U (en) * 2012-05-15 2013-01-09 南通瑞鑫电子电器有限公司 Lift car overload protective device
CN103863903A (en) * 2012-12-18 2014-06-18 东芝电梯株式会社 Elevator
CN203754186U (en) * 2013-02-27 2014-08-06 东芝电梯株式会社 Counterweight changeable lift
CN205132796U (en) * 2015-09-17 2016-04-06 苏州特斯拉快速电梯有限公司 Elevator car load weighing device
CN205855679U (en) * 2016-07-08 2017-01-04 浙江远东快速电梯有限公司 A kind of Elevator weight sensor compensation device
CN206088646U (en) * 2016-08-29 2017-04-12 山东莱茵艾佳电梯有限公司 Elevator overload switch bracket

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882968A (en) * 1973-06-01 1975-05-13 Westinghouse Electric Corp Elevator system
US4230205A (en) * 1978-05-10 1980-10-28 Westinghouse Electric Corp. Elevator system
JPH05294581A (en) * 1992-04-17 1993-11-09 Hitachi Building Syst Eng & Service Co Ltd Method of replacing main cable for elevator
JPH06293483A (en) * 1993-04-07 1994-10-21 Ogawa Seisakusho:Kk Regulating mechanism for tension of cable and the like
JPH09110336A (en) * 1995-10-13 1997-04-28 Mitsubishi Denki Bill Techno Service Kk Elevator
JP2005187156A (en) * 2003-12-25 2005-07-14 Mitsubishi Electric Corp Elevator
JP2011116471A (en) * 2009-12-01 2011-06-16 Mitsubishi Electric Corp Elevator apparatus
CN101979302A (en) * 2010-10-27 2011-02-23 曹锦泉 Variable counterweight elevator and variable counterweight hydraulic elevator
CN202429839U (en) * 2011-12-16 2012-09-12 苏州市东沪电缆有限公司 False following elevator cable
CN202657784U (en) * 2012-05-15 2013-01-09 南通瑞鑫电子电器有限公司 Lift car overload protective device
CN103863903A (en) * 2012-12-18 2014-06-18 东芝电梯株式会社 Elevator
CN203754186U (en) * 2013-02-27 2014-08-06 东芝电梯株式会社 Counterweight changeable lift
CN205132796U (en) * 2015-09-17 2016-04-06 苏州特斯拉快速电梯有限公司 Elevator car load weighing device
CN205855679U (en) * 2016-07-08 2017-01-04 浙江远东快速电梯有限公司 A kind of Elevator weight sensor compensation device
CN206088646U (en) * 2016-08-29 2017-04-12 山东莱茵艾佳电梯有限公司 Elevator overload switch bracket

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109879136A (en) * 2019-02-19 2019-06-14 浙江省特种设备检验研究院 Emergency staircase
CN111779634A (en) * 2020-07-15 2020-10-16 贵州师范大学 Wind power generation equipment

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Application publication date: 20180918