CN104444693A - Elevator buffering system with variable damping force - Google Patents
Elevator buffering system with variable damping force Download PDFInfo
- Publication number
- CN104444693A CN104444693A CN201410707849.2A CN201410707849A CN104444693A CN 104444693 A CN104444693 A CN 104444693A CN 201410707849 A CN201410707849 A CN 201410707849A CN 104444693 A CN104444693 A CN 104444693A
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- Prior art keywords
- elevator
- buffering
- piston rod
- spring
- engaging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an elevator buffering system with variable damping force. The elevator buffering system comprises a buffering assembly which is fixedly arranged at the bottom of an elevator shaft and used for preventing an elevator car from making rigid contact with the bottom. The buffering assembly comprises a buffering spring arranged on a foundation and a buffering plate supported by the top of the buffering spring, wherein the buffering plate directly faces the bottom of the elevator car, and the buffering spring is a variable-pitch spring. The damping force of the elevator buffering system is gradually increased in the process of buffering the contact between the car and the bottom, increasing of the damping force is faster and gentler compared with a common spring, and therefore descent buffering smoothness and sufficient damping force are achieved. Thus, compared with the prior art, the buffering stroke and the gradual variation elastic coefficient can be increased, and a technical scheme for automatically adjusting the key performance parameter of spring force can be obtained. The elevator buffering system can be applied to a high-speed elevator, can be dynamically applied at any time, effectively improves the comfort and reliability before the car makes contact with the bottom or at the movement when the car makes contact with the buffering assembly, and improves the safety performance of the elevator.
Description
Technical field
The present invention relates to a kind of special safety equipment system, special type relates to the safety system that a kind of cage type elevator touches the end.
Background technology
Cage type elevator is a kind of vehicle solving vertical transport, is closely connected with daily life; Existing cage type elevator, primarily of formations such as towing machine, control housing, car, guide rails, realizes uplink and downlink comparatively rapidly; In order to realize uplink and downlink and install relevant device, use the place meeting type of construction elevators hoistway of cage type elevator at building or other, to realize trouble-free operation.
The uplink and downlink of cage type elevator are generally realized by mechanical force traction, structure is comparatively complicated, due to environment for use, cycle and the problem such as ageing equipment, quality, lift car all can be caused to drop without when constraint or finite constraint, there is comparatively serious safety problem.In prior art, cause serious danger in order to solve by (directly dropping to shaft bottom) at the bottom of car rigid touch to occupant, shock absorber is set at shaft bottom; Be hydraulic cushion for express elevator shock absorber, slower elevators is then generally adopted to the structure of recoil spring, and so consider the mainly elasticity modulus of spring, the relation between stroke and car, therefore, express elevator then can not adopt the spring that elasticity modulus is larger, otherwise have at the bottom of obvious rigid touch and feel, thus cause the accident.
Therefore, need to improve existing elevator cushion structure, be suitable for all cage type elevators to use, touch dumping force in bottom buffering process at car to increase gradually, and increase process is mild rapidly compared with common spring, realize the ride comfort of downstream buffer and there is enough dumping forces, therefore compared with prior art can increase the elasticity modulus of cushion stroke and gradual change, the safety performance of hoisting elevator.
Summary of the invention
In view of this, object of the present invention provides a kind of elevator cushion system with mutative damp power, be suitable for all cage type elevators to use, touch dumping force in bottom buffering process at car to increase gradually, and increase process is mild rapidly compared with common spring, realize the ride comfort of downstream buffer and there is enough dumping forces, therefore compared with prior art can increase the elasticity modulus of cushion stroke and gradual change, the safety performance of hoisting elevator.
The elevator cushion system with mutative damp power of the present invention, comprises and being fixedly installed on bottom elevator for preventing elevator car rigid touch bottom buffering assembly; Described Buffer Unit comprises the recoil spring be arranged on basis and the dash plate being supported in recoil spring top, and described dash plate is just to bottom elevator car, and described recoil spring is variable-pitch spring;
Further, the pitch of described recoil spring becomes large from bottom to top gradually;
Further, reduction damper assembly is also comprised;
The piston rod that described reduction damper assembly comprises cylinder body, damping piston and is fixedly connected with damping piston, described piston rod engages with Buffer Unit after Buffer Unit is compressed by elevator car between rebound stroke, forms reduction damping by damping piston to Buffer Unit.
Further, described Buffer Unit comprises the recoil spring be arranged on basis and the dash plate being supported in recoil spring top, and described dash plate is just to bottom elevator car;
Further, relatively with piston rod on described dash plate, be provided with orienting sleeve and the reduction dumping force fastener for engaging with piston rod, described orienting sleeve is axially directed mode can be coated at piston rod, described reduction dumping force fastener to be compressed between rebound stroke by elevator car at recoil spring and to engage with piston rod, and described piston normality is close to cylinder base;
Further, reduction dumping force fastener is the engaging lever be articulated with in the mode that can radially wobble along piston rod on dash plate, engaging lever lower end is provided with the joint boss extended internally, described piston rod has for after engaging lever is descending with the engagement groove engaging boss and formed hasp; Described orienting sleeve is provided with the groove that at least can be used for radial through engaging boss;
Further, by gravity vertically downward, joint boss extends inward into orienting sleeve and extended distance enables joint boss inner end stretch into engagement groove for engaging lever; Described orienting sleeve becomes spacing in the tangential of orienting sleeve to joint boss shape for the groove by engaging boss.
Further, described joint boss lower surface is the acclivitous inclined-plane of ecto-entad, and described piston rod top is frustum structure;
Further, described engagement groove is the circular groove around piston rod;
Further, the lower edge of described engagement groove is lower than the axial location engaging boss during recoil spring limited compression.
Beneficial effect of the present invention: the elevator cushion system with mutative damp power of the present invention, recoil spring adopts variable-pitch spring, touch dumping force in bottom buffering process at car to increase gradually, and increase process is mild rapidly compared with common spring, realize the ride comfort of downstream buffer and there is enough dumping forces, therefore the elasticity modulus of cushion stroke and gradual change can compared with prior art be increased, the technical scheme of this critical performance parameters of automatic adjustment spring power can be formed, be applicable to express elevator to use, there is the effect of dynamic application at any time, before making car touch the end and the traveling comfort of moment of contact Buffer Unit and reliability effectively improve, the safety performance of hoisting elevator.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention, as shown in the figure: the elevator cushion system with mutative damp power of the present embodiment, comprises and being fixedly installed on bottom elevator for preventing elevator car 1 rigid touch bottom buffering assembly; Described Buffer Unit comprises the recoil spring 3 be arranged on basis 8 and the dash plate 15 being supported in recoil spring 3 top, and described dash plate 15 is just to bottom elevator car 1, and described recoil spring 3 is variable-pitch spring; Basis 8 refers to the basis of the installation into Buffer Unit; As shown in the figure, basis being also provided with the spring perch 6 for installing recoil spring 3, can be used for maximum compression stroke and the limited compression position of regulating spring 3; The quantity of recoil spring 3 can be installed as required, is generally more than three along the circumferential direction uniform settings; Dash plate 15 can adopt guidepost to install with recoil spring 3 top to coordinate and weld, and avoids departing from when buffering or bounce-back.
In the present embodiment, the pitch of described recoil spring 3 becomes large from bottom to top gradually; The moment that can contact at elevator car 1 can submissive buffering at once, and increases elasticity modulus gradually.
In the present embodiment, described buffering assembly also comprises reduction damper assembly, the piston rod 12 that reduction damper assembly comprises cylinder body 9, damping piston 10 and is fixedly connected with damping piston 10, described piston rod 12 engages with Buffer Unit after Buffer Unit is compressed by elevator car 1 between rebound stroke, form reduction damping by damping piston 10 pairs of Buffer Units, reduction damping refers to being formed damping by during reduction distortion after compressing; The mode that piston rod 12 engages with the Buffer Unit mode that mechanical automatic locking button, electromagnetism can be adopted to engage etc., certainly, electromagnetism engages to be needed gather data and automatically control, and does not repeat them here; As shown in the figure, damping piston 10 has damping hole (setting size and number as required), be full of the damping liquid such as fluid or magnetic flow liquid in cylinder body, when piston moves under external force, damping liquid passes through by means of only damping hole, stroke damping; As shown in the figure, cylinder body 9 is embedded among basis 8, and top is sealed by cylinder cap 11, and cylinder cap 11 is sealedly attached to cylinder body by the holding-down bolt 7 be embedded on basis 8; Adopt the structure that buffering spring component combines with reduction damper assembly, touch bottom buffering at car and terminate the effect that pre reduction damper assembly engages the speed playing restriction resilience, ensure mild resilience, and utilize Buffer Unit to realize downstream buffer, due to the existence of reduction damper assembly, cushion stroke and the elasticity modulus of Buffer Unit also can be increased, in conjunction with the recoil spring of pitches, the realization buffering that can more relax, utilizes reduction damping to avoid quick resilience, ensures final buffering effect after buffering; Therefore, this structure is suitable for all cage type elevators and uses, when elevator accident touches the end, compression buffering mild, gradually and return can be ensured, avoid because the elasticity modulus of recoil spring is excessive or compression stroke is long and secondary that is that cause the rebounds safety misadventure caused.
In the present embodiment, relatively with piston rod 12 on described dash plate 15, be provided with orienting sleeve 4 and the reduction dumping force fastener 14 for engaging with piston rod 12, described orienting sleeve 4 is axially directed mode can be coated at piston rod 12, described reduction dumping force fastener to be compressed between rebound stroke by elevator car 1 at recoil spring 3 and to engage with piston rod 12, and described piston 10 normality is close to bottom cylinder body 9; This structure can ensure that dash plate 15 is stablized descending at recoil spring 3 after being compressed, and ensures that reduction dumping force fastener 14 aligns joint with piston rod 12.
In the present embodiment, reduction dumping force fastener 14 is the engaging lever be articulated with in the mode that can radially wobble along piston rod 12 on dash plate 15, engaging lever lower end is provided with the joint boss 13 extended internally, described piston rod 12 has for after engaging lever is descending with the engagement groove 5 engaging boss 13 and formed hasp; Described orienting sleeve 4 is provided with the groove 2 that at least can be used for radial through engaging boss 13; The elastic force Compress Spring of recoil spring 3 is overcome under the effect that dash plate falls at lift car, engage boss 13 when lift car 1 drops to desired location and embed engagement groove 5, the position that now piston rod 12 contacts with joint boss 13 has inclination, to produce radially outer component, set back at joint boss place after making engaging lever outwards and make joint boss embed engagement groove; This setpoint distance, generally close to the limited compression position of recoil spring, to give full play to the buffering of spring, extends compression stroke.
In the present embodiment, by gravity vertically downward, joint boss 13 extends inward into orienting sleeve and extended distance enables joint boss 13 inner end stretch into engagement groove 5 for engaging lever; Described orienting sleeve 4 becomes spacing, the tangential direction that tangentially refer to along the circumferential direction of orienting sleeve 4 in the tangential of orienting sleeve 4 to joint boss shape for the groove by engaging boss; Structure is simple and easy for installation, and ensures to engage the Engage and disengage between boss 13 and engagement groove 5, avoids deviation occurs, particularly reduction damping process upon engagement, prevents from throwing off thus avoiding losing dumping force.
In the present embodiment, described joint boss 13 lower surface is the acclivitous inclined-plane of ecto-entad, and described piston rod 12 top is frustum structure; The structure that frustum structure and inclined-plane combine can ensure to produce radially outer component in the moment contacted, and avoids disturbing, thus makes engaging process smooth and easy.
In the present embodiment, described engagement groove 5 is the circular groove around piston rod; Processing simply and easily engage, is avoided because the engage position that causes of the rotation of piston rod 12 is not corresponding.
In the present embodiment, the lower edge of described engagement groove 5 is lower than the axial location engaging boss 13 during recoil spring 3 limited compression, avoid engaging boss 13 and exceed engagement groove 5 in descending process, prevent the rigid contact that there is no need, thus avoid the damage of generation part.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. there is an elevator cushion system for mutative damp power, it is characterized in that: comprise and being fixedly installed on bottom elevator for preventing elevator car rigid touch bottom buffering assembly; Described Buffer Unit comprises the recoil spring be arranged on basis and the dash plate being supported in recoil spring top, and described dash plate is just to bottom elevator car, and described recoil spring is variable-pitch spring.
2. the elevator cushion system with mutative damp power according to claim 1, is characterized in that: the pitch of described recoil spring becomes large from bottom to top gradually.
3. the elevator cushion system with mutative damp power according to claim 1, is characterized in that: also comprise reduction damper assembly; The piston rod that described reduction damper assembly comprises cylinder body, damping piston and is fixedly connected with damping piston, described piston rod engages with Buffer Unit after Buffer Unit is compressed by elevator car between rebound stroke, forms reduction damping by damping piston to Buffer Unit.
4. the elevator cushion system with mutative damp power according to claim 3, it is characterized in that: relatively with piston rod on described dash plate, be provided with orienting sleeve and the reduction dumping force fastener for engaging with piston rod, described orienting sleeve is axially directed mode can be coated at piston rod, described reduction dumping force fastener to be compressed between rebound stroke by elevator car at recoil spring and to engage with piston rod, and described piston normality is close to cylinder base.
5. the elevator cushion system with mutative damp power according to claim 4, it is characterized in that: reduction dumping force fastener is the engaging lever be articulated with in the mode that can radially wobble along piston rod on dash plate, engaging lever lower end is provided with the joint boss extended internally, described piston rod has for after engaging lever is descending with the engagement groove engaging boss and formed hasp; Described orienting sleeve is provided with the groove that at least can be used for radial through engaging boss.
6. the elevator cushion system with mutative damp power according to claim 5, is characterized in that: by gravity vertically downward, joint boss extends inward into orienting sleeve and extended distance enables joint boss inner end stretch into engagement groove for engaging lever; Described orienting sleeve becomes spacing in the tangential of orienting sleeve to joint boss shape for the groove by engaging boss.
7. the elevator cushion system with mutative damp power according to claim 5, is characterized in that: described joint boss lower surface is the acclivitous inclined-plane of ecto-entad, and described piston rod top is frustum structure.
8. the elevator cushion system with mutative damp power according to claim 5, is characterized in that: described engagement groove is the circular groove around piston rod.
9. the elevator cushion system with mutative damp power according to claim 5, is characterized in that: the lower edge of described engagement groove is lower than the axial location engaging boss during recoil spring limited compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707849.2A CN104444693B (en) | 2014-11-30 | 2014-11-30 | Elevator buffering system with variable damping force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707849.2A CN104444693B (en) | 2014-11-30 | 2014-11-30 | Elevator buffering system with variable damping force |
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| CN104444693A true CN104444693A (en) | 2015-03-25 |
| CN104444693B CN104444693B (en) | 2017-02-01 |
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| CN201410707849.2A Active CN104444693B (en) | 2014-11-30 | 2014-11-30 | Elevator buffering system with variable damping force |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065558A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Active double-control variable-damping magneto-rheological damper with single pole and variable orifice |
| CN105065550A (en) * | 2015-07-18 | 2015-11-18 | 常州大学 | Self-adaptive magnetorheological damper with double-pole gradient cylinder |
| CN106348127A (en) * | 2016-12-01 | 2017-01-25 | 郑州艾莫弗信息技术有限公司 | Self-adaption elevator buffer with feedback |
| CN107286564A (en) * | 2017-07-26 | 2017-10-24 | 江苏意迪驱动设备有限公司 | A kind of cage type elevator with support meanss |
| CN107826926A (en) * | 2017-11-14 | 2018-03-23 | 苏州科达液压电梯有限公司 | A kind of elevator anti-falling safe protection device out of control |
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| CN2298232Y (en) * | 1996-06-06 | 1998-11-25 | 张学强 | Safety device for elecvator |
| JP2003146554A (en) * | 2001-11-05 | 2003-05-21 | Mitsubishi Electric Corp | Multi-stage hydraulic shock absorber |
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| JP2008297113A (en) * | 2007-06-04 | 2008-12-11 | Mitsubishi Electric Corp | Oil-filled shock absorbing device of elevator |
| CN203187242U (en) * | 2013-04-11 | 2013-09-11 | 长安大学 | Semi-active shock absorption elevator |
| JP2014084204A (en) * | 2012-10-24 | 2014-05-12 | Mitsubishi Electric Corp | Shock absorber for elevator |
| CN204280951U (en) * | 2014-11-30 | 2015-04-22 | 重庆和航科技股份有限公司 | There is the elevator buffer device of gradual change elasticity modulus |
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Patent Citations (9)
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| CN2298232Y (en) * | 1996-06-06 | 1998-11-25 | 张学强 | Safety device for elecvator |
| JP2003146554A (en) * | 2001-11-05 | 2003-05-21 | Mitsubishi Electric Corp | Multi-stage hydraulic shock absorber |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065550A (en) * | 2015-07-18 | 2015-11-18 | 常州大学 | Self-adaptive magnetorheological damper with double-pole gradient cylinder |
| CN105065558A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Active double-control variable-damping magneto-rheological damper with single pole and variable orifice |
| CN106348127A (en) * | 2016-12-01 | 2017-01-25 | 郑州艾莫弗信息技术有限公司 | Self-adaption elevator buffer with feedback |
| CN107286564A (en) * | 2017-07-26 | 2017-10-24 | 江苏意迪驱动设备有限公司 | A kind of cage type elevator with support meanss |
| CN107826926A (en) * | 2017-11-14 | 2018-03-23 | 苏州科达液压电梯有限公司 | A kind of elevator anti-falling safe protection device out of control |
| CN107826926B (en) * | 2017-11-14 | 2023-08-22 | 苏州科达液压电梯有限公司 | Anti-falling safety protection device for uncontrolled elevator |
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| CN104444693B (en) | 2017-02-01 |
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Effective date of registration: 20200930 Address after: Room 5, No. 10-1, Xinjing Middle Road, Tangshi, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: ZHANGJIAGANG OUWEI AUTOMATION RESEARCH AND DEVELOPMENT Co.,Ltd. Address before: Jiulongpo Branch Park four street 400039 Chongqing City No. 52 standard factory building 3 floor K Patentee before: CHONGQING HEHANG TECHNOLOGY Co.,Ltd. |
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