CN101214898B - Torque moment motor type elevator - Google Patents
Torque moment motor type elevator Download PDFInfo
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- CN101214898B CN101214898B CN200710002347XA CN200710002347A CN101214898B CN 101214898 B CN101214898 B CN 101214898B CN 200710002347X A CN200710002347X A CN 200710002347XA CN 200710002347 A CN200710002347 A CN 200710002347A CN 101214898 B CN101214898 B CN 101214898B
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- ball screw
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Abstract
The present invention discloses a torsion motor type elevator which comprises a torsion motor, a ball bearing screw, a slip screw cap and a section of elevator cabin. The torsion motor is used to drive the load screw of the ball bearing screw directly. The elevator cabin is fixed at a load screw cap and is lifted along with the load screw cap. The ball bearing screw is used to reduce the energy loss of an elevator driving system, and a slip screw cap is arranged at the ball bearing screw to increase the safety. In addition, a resolver or a decoder is added at the torsion motor for controlling the position exactly. The present invention can avoid the problems of energy-wasting, complex components, taking space, noise, etc.
Description
Technical field
The present invention relates to a kind of elevator, particularly relate to a kind of torque moment motor type elevator.
Background technology
Building height now is along with Building technology constantly promotes, and the elevator device within the building becomes the essential equipment of human daily life already, except system as transmission people, goods, other more has speed, easy to control, safe and not fragile etc. advantage, therefore, elevator device is for modern architecture, and its importance that certainly exists is not sayed yet and can be explained.
The development of elevator consists predominantly of four kinds of screw, hydraulic type, cable type and tubular linear motor drivens etc. about its transmission device design so far.What use was maximum at present is the design of wire reel formula, and it can allow the elevator cage rise smoothly, descend, so all adopt wire reel formula elevator now.Aforementioned all is to adopt induction type motor for everybody uses with cognitive wire reel formula power resources more often, shown in the structure of Fig. 1, it must comprise: induction type motor 10, drop-gear box 11, reel 12, cable wire 13, counterweight 14 and elevator cage 15 etc., use induction type motor 10 to cooperate drop-gear boxs 11 to drive reels 12, and receive or put cable wire 13 with reel 12 and use the lifting of adjusting counterweight 14 and elevator cage 15.The problem that this wire reel formula elevator commonly used occurs after practicality has:
The first, the element of installation of this wire reel formula elevator is essential to cooperate drop-gear box 11, reel 12, cable wire 13, counterweight 14 designs with induction type motor 10, and component devices is very complicated, and all must take up room, and causes the waste on the space;
The second, wire reel formula elevator has the problem of rocking with noise easily, and wire reel formula equipment relies on lubricated, maintenance work very much, and not only noise is surprising if a period of time does not have the wire reel formula elevator of maintenance, and is easy to meet accident;
They are three years old, the control system 16 of wire reel formula elevator, induction system 17 adhere to different system separately with the lifting power system, so can't directly rely on induction type motor 10 to carry out position control, in control, form complicated contact control relation again, the not only difficult control of precision, and the easy problem that control, sense faults occur.
Though the transmission device of the screw type elevator that aforementioned another kind is commonly used has centenary use historical, its utilization induction type motor cooperates drop-gear box to drive screw rod, and drives the elevator cage with a lifters that is screwed together on the screw rod in addition.This design can be simplified complicated wire reel member, and screw rod and lifters to produce the mode that lifting drives by rotational slide friction motion fool proof reliably.Yet aforementioned improvement design still has its defective to exist, and the problem after it is practical is;
First, because traditional screw transmission device all is that screw rod and lifters are carried out the lifting transmission with the rotational slide fricting movement, its friction drag is big, and the mechanical efficiency of transmission is not high, generally can only give play to the efficient about 30%, stand on the angle of energy cost, and do not meet requirement economically;
The second, present elevator is along with the increase of architecture storey height all needs kinematic velocity faster, and the high friction drag that produces because of screw type elevator can cause problems such as temperature fast rise and power consumption, and is in fact infeasible in lift facility now;
The 3rd, the induction motor that screw type elevator uses control to be difficult for, and the control of induction motor, induction system and lifting power system adhere to different system separately, so can't directly rely on induction type motor to carry out position control, in control, form complicated contact control relation again, the not only difficult control of precision, and the easy problem that control, sense faults occur.
Research and development technology and experience that this case applicant was accumulated in the ball screw field based on the past begin to notice ball screw is applied in the elevator mechanism, and carry out the research that ball screw replaces traditional cliding friction screw rod.The advantage of ball screw is that it only can produce very little friction drag (possessing good machinery driving efficiency) now, but the major issue that must overcome below finding in the research process:
First, various elevator devices in the past all will cooperate drop-gear box to drive with induction type motor, but the torque value of aforementioned induction type motor is not good, thus must cooperate the drop-gear box could control operation, however the cost of this drop-gear box, safeguard and take up room but all be problem;
The second, aforementioned elevator device commonly used all will cooperate drop-gear box to drive with induction type motor, but the consumption of current of induction type motor is bigger, and induction type motor control is difficult for.Common system all was control, induction system to be separated with the lifting power system design different system in the past, can't directly rely on induction type motor to carry out position control, so in control, form complicated contact control relation again, not only precision is difficult to control, and occurs the problem of control, sense faults easily;
The 3rd, because the ball screw friction drag is very low, its friction coefficient can drop to 0.002 from 0.1 of traditional cliding friction screw rod, and mechanical efficiency is then risen to more than 95% by 30% of traditional cliding friction screw rod.Yet there is the shortcoming in the safety in ball screw, because the slip nut of traditional cliding friction screw rod is just processed the negative thread of a trapezoid cross section on the internal diameter of a rigid material, because simple in structure, the chance of fault is not high yet.And before the slip nut was about to et out of order, the situation that its slip nut has severe wear earlier took place, and convenient prior preventive maintenance is to avoid accidents.The mechanism that reviews ball screw is more complicated then, at least three assemblies such as body that include steel ball, recirculation assembly and internal diameter tool negative thread in its ball nut, even before negative thread does not also have noticeable wear to take place, ball nut still has the possibility (for example steel ball drops) of et out of order, so the failure situations of ball nut is difficult for finding in advance, be difficult to by finding in the periodic inspection to elevator, and in time change or maintenance.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of torsion abundance, saves the energy and the simple torque moment motor type elevator of member.
For addressing the above problem, torque moment motor type elevator of the present invention includes a torque motor, ball screw, slip nut and an economize on electricity tower wagon railway carriage or compartment.This torque motor has a rotor shaft that is subjected to the electromagnetic force driven rotary.This ball screw includes a load screw rod, a load nut and most ball assembly, the rotor shaft of this load screw rod one end and the torque motor interlock that joins, and the load nut is provided on the load screw rod by a plurality of rolling assemblies.This slip nut inner hollow diameter offers thread, is provided in thread in the load screw flight profile of this ball screw, and is reserved with a gap between the thread of slip nut and load screw flight profile.This elevator cage is to be fixed on the load nut of ball screw with attaching parts, and the elevator cage is with the load nut lifting of ball screw.During elevator work,, drive the then lifting thereupon of elevator cage that is fixed on the load nut with the load screw rod of torque motor direct drive ball screw.
The beneficial effect that the present invention can bring, divide following four aspects to describe:
Relevant for saving energy aspect:
1. the present invention is with the load screw rod 31 of torque motor 20 direct drive ball screws 30, only there is the coil 22 on the stationary torus pedestal 21 to power by this torque motor 20, these rotor shaft 23 outer 24 of annular magnetic poles need not charging, so the present invention can effectively save the energy;
2. the present invention is with the load screw rod 31 of torque motor 20 direct drive ball screws 30, this elevator cage 50 is fixed on lifting thereupon on the load nut, so need not to use annexes commonly used such as reductor, counterweight, therefore can reduce friction loss, the driving energy of reductor consumption in the past; And the lifting energy of weighing device waste commonly used more can save fully.
The space hold aspect is simplified, reduced to relevant member:
1. the present invention is with the load screw rod 31 of torque motor 20 direct drive ball screws 30,50 of this elevator cages are fixed on lifting thereupon on the load nut 32, because torque motor 20 direct drive ball screws 30, so the present invention need not to increase annexes commonly used such as using reductor, counterweight, really can allow member simplify, reduce space hold;
2. the present invention can add on torque motor 20 and separate hornwork or coder just can carry out the position accuracy control, make the setting accuracy of torque motor 20 can reach in 15 rads (arc-sec), the present invention need not to increase elevator too much commonly used and parks all places control system of floor, and can significantly simplify the control system of elevator commonly used.
Relevant low noise, the high aspect of efficient:
1. the present invention adopts torque motor 20 as propulsion source, and this torque motor 20 itself is the electromagnetic force driven rotary that is subjected to coil 22 by rotor shaft 23 outer annular magnetic poles 24, so torque motor of the present invention 20 low noises; In addition since torque motor 20 rotor shafts 23 outer annular magnetic pole 24 quantity are many can significantly increase torsion, and with the load screw rod 31 of torque motor 20 direct drive ball screws 30, so torque motor of the present invention 20 efficient height;
2. the present invention uses the low characteristic of ball screw 30 friction drags can reduce noise, and utilize its friction coefficient to drop to 0.002 from 0.1 of traditional cliding friction screw rod, allow mechanical efficiency of the present invention then rise to more than 95% by 30% of traditional cliding friction screw rod, so the present invention can reduce the degradation of energy of elevator drive system, because this slip nut 40 tightening security property on ball screw 30, and should slip nut 40 can direct contact load screw rod 31 under normal the use, and can carry elevator cage 50 fully by ball nut 30, so the present invention can make full use of the mechanical high efficiency of ball screw 30, and the doubt on avoiding producing safely.
Relevant protection maintenance needs is hanged down the aspect:
1. the present invention adopts torque motor 20 as propulsion source, and this torque motor 20 itself is the electromagnetic force driven rotary that is subjected to coil 22 by rotor shaft 23 outer annular magnetic poles 24, the demand in the more unlubricated maintenance of this magnetic attraction power;
2. the present invention uses ball screw 30 to reduce the degradation of energy of elevator drive system, aforementioned ball screw 30 itself is just subsidiary that fuel tank can (this be the basic annex of general ball screw for lubricating maintenance voluntarily, seldom give unnecessary details at this), so ball screw of the present invention 30 design need not the regular lubricating maintenance demand used always equally.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is a wire reel formula elevator scheme drawing commonly used;
Fig. 2 is an assembled sectional view of the present invention;
Fig. 3 is ball screw of the present invention, slip nut and attaching parts cutaway view;
Fig. 4 is a torque motor part sectional view of the present invention.
The specific embodiment
As shown in Figure 2, torque moment motor type elevator of the present invention includes a torque motor 20, drive coupling A, ball screw 30, a slip nut 40 and an economize on electricity tower wagon railway carriage or compartment 50, and its structure is described in detail as follows:
Torque motor 20 shown in Figure 4 includes a stationary torus pedestal 21, a plurality of coil 22, a rotor shaft 23 and an a plurality of magnetic pole 24.These stationary torus pedestal 21 central authorities offer the space for rotor shaft 23 runnings, this coil 22 is to twine to be positioned on these stationary torus pedestal 21 inwalls, and these rotor shaft 23 outer shrouds are shown a plurality of magnetic poles 24, and rotor shaft 23 can pivot and be positioned in this stationary torus pedestal 21, is subjected to the electromagnetic force driven rotary of coil 22 by rotor shaft 23 outer annular magnetic poles 24.Drive coupling A is to connect on rotor 23 1 ends that are located at this torque motor 20, and this drive coupling A is for the general common equipment that is coupling, so seldom give unnecessary details at this.
Fig. 2 and ball screw shown in Figure 3 30 include a load screw rod 31, load nut 32 and a plurality of ball 33 (this ball general reference ball type and column type rolling assembly).System is provided with screw thread 311 on this load screw rod 31, and this screw thread 311 is engaged in most balls 33 inboards, and load screw rod 31 1 ends by drive coupling A affixed and with rotor shaft 23 interlocks of torque motor 20.Load nut 32 then is engaged in most balls 33 outsides with screw thread 321, and this load nut 32 is provided on the load screw rod 31 with the rotation and lifting displacement.
Elevator cage 50 is to be fixed on the load nut 32 of ball screw 30 with a connection piece 51.This slip nut 40 is same affixed with attaching parts 51, contains within attaching parts 51 in addition that bearing 52 is allowed elevator cage 50 direct liftings and does not rotate with ball screw 30 and operate.
The above is the interrelation position and the general introduction thereof of each associated component of the present invention.
What deserves to be mentioned is that elevator is the very high equipment of a kind of demand for security.Usually reach the inspection that all can do routine in the use when mounted, be in safe running condition to guarantee elevator.The present invention is convenient to check the surface that in the time of can allowing structure design slip nut 40 is exposed to mechanism, and can measure the width thickness of different-thickness (use regulation) in the gap 42 of slip nut 40 by the outside of mechanism, the variation of file gap 42 numerical value during each elevator examination is as the reference that whether needs maintenance in advance.Because ball screw of the present invention is made of metallic material, as long as ball screw 30 subsidiary fuel tank and gap numerical value periodic inspections need not regular lubricating maintenance work.
Need in addition one carry be, be to allow elevator cage 50 with a connection piece 51 load nut 32 and this slip nut 40 of affixed ball screw 30 respectively shown in Fig. 2, the attaching parts combination that other can inference for example:
1. the load nut of ball screw and this slip nut are directly affixed, and the then affixed load nut of this attaching parts maybe should the slip nut;
2. the elevator cage uses different attaching partss load nut and this slip nut of affixed ball screw respectively.
Claims (6)
1. torque moment motor type elevator, it includes a torque motor, ball screw, slip nut and an economize on electricity tower wagon railway carriage or compartment, it is characterized in that:
Described torque motor has a rotor shaft that is subjected to the electromagnetic force driven rotary;
Described ball screw includes a load screw rod, a load nut and a plurality of rolling assembly, the rotor shaft of described load screw rod one end and the torque motor interlock that joins, and a plurality of rolling assemblies of load nut mat are provided on the load screw rod;
Described slip nut offers thread in slip nut inner hollow diameter, and described slip nut is provided in the load screw flight profile of described ball screw with thread, and is reserved with a gap between the thread of slip nut and load screw flight profile;
Described elevator cage be to be fixed on the described load nut of described ball screw with attaching parts, and the elevator cage is with the load nut lifting of ball screw.
2. according to the described torque moment motor type elevator of claim 1, it is characterized in that: described torque motor includes a stationary torus pedestal, a plurality of coil, a roots rotor axle and a plurality of magnetic pole, described stationary torus pedestal central authorities offer for the rotor shaft operating space, described coil array is twined and is positioned on the described stationary torus base internal wall, described rotor shaft outer shroud is shown a plurality of magnetic poles, and rotor shaft can pivot and be positioned in the described stationary torus pedestal, is subjected to the electromagnetic force driven rotary of coil by the outer annular magnetic pole of rotor shaft.
3. according to the described torque moment motor type elevator of claim 1, it is characterized in that: it also is provided with a drive coupling, described drive coupling is to connect on rotor shaft one end that is located at described torque motor, and load screw rod one end of described ball screw by drive coupling affixed and with the rotor shaft interlock of torque motor.
4. according to the described torque moment motor type elevator of claim 1, it is characterized in that: described slip nut is same affixed with attaching parts, contains within attaching parts in addition that bearing is allowed the direct lifting in elevator cage and does not operate with the ball screw rotation.
5. according to the described torque moment motor type elevator of claim 1, it is characterized in that: the load nut of described ball screw and described slip nut are directly affixed.
6. according to the described torque moment motor type elevator of claim 1, it is characterized in that: the load nut and the described slip nut of the affixed ball screw of attaching parts difference that the utilization of described elevator cage is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710002347XA CN101214898B (en) | 2007-01-04 | 2007-01-04 | Torque moment motor type elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710002347XA CN101214898B (en) | 2007-01-04 | 2007-01-04 | Torque moment motor type elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101214898A CN101214898A (en) | 2008-07-09 |
| CN101214898B true CN101214898B (en) | 2010-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710002347XA Expired - Fee Related CN101214898B (en) | 2007-01-04 | 2007-01-04 | Torque moment motor type elevator |
Country Status (1)
| Country | Link |
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| CN (1) | CN101214898B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105752802B (en) * | 2016-04-25 | 2018-07-27 | 山东胜开电梯有限公司 | A kind of ball-screw-transmission formula elevator |
| CN109681598A (en) * | 2019-02-28 | 2019-04-26 | 昇翰科技（深圳）有限公司 | With polytropism ball-type opening nut and transmission device |
| CN114955804A (en) * | 2022-04-15 | 2022-08-30 | 南通通途机电制造有限公司 | Elevator hauler with lubricated keeping type main shaft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304794A (en) * | 1964-01-23 | 1967-02-21 | British Aircraft Corp Ltd | Mechanisms incorporating recirculating ball screw-jacks |
| US4742891A (en) * | 1985-09-05 | 1988-05-10 | Mitsubishi Denki Kabushiki Kaisha | Elevator system |
| CN1812927A (en) * | 2003-08-05 | 2006-08-02 | 三菱电机株式会社 | Hoist for elevator |
-
2007
- 2007-01-04 CN CN200710002347XA patent/CN101214898B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304794A (en) * | 1964-01-23 | 1967-02-21 | British Aircraft Corp Ltd | Mechanisms incorporating recirculating ball screw-jacks |
| US4742891A (en) * | 1985-09-05 | 1988-05-10 | Mitsubishi Denki Kabushiki Kaisha | Elevator system |
| CN1812927A (en) * | 2003-08-05 | 2006-08-02 | 三菱电机株式会社 | Hoist for elevator |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-265168A 2002.09.18 |
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| CN101214898A (en) | 2008-07-09 |
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| C14 | Grant of patent or utility model | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhuo Yongcai Inventor after: Su Yicheng Inventor before: Su Yicheng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SU YICHENG TO: ZHUO YONGCAI SU YICHENG |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100407 Termination date: 20180104 |