CN104444693B - Elevator buffering system with variable damping force - Google Patents
Elevator buffering system with variable damping force Download PDFInfo
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- CN104444693B CN104444693B CN201410707849.2A CN201410707849A CN104444693B CN 104444693 B CN104444693 B CN 104444693B CN 201410707849 A CN201410707849 A CN 201410707849A CN 104444693 B CN104444693 B CN 104444693B
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- elevator
- buffering
- spring
- piston rod
- boss
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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 is related to the security system that a kind of cage type elevator bottoms out.
Background technology
Cage type elevator is a kind of vehicles solving vertical transport, is closely connected with daily life；Existing
Cage type elevator is mainly made up of traction machine, switch board, car, guide rail etc., realizes more rapidly uplink and downlink；In order to realize
Uplink and downlink simultaneously install relevant device, building or other use cage type elevator place can type of construction elevators hoistway, with reality
Existing trouble-free operation.
The uplink and downlink of cage type elevator are typically drawn by mechanical force and are realized, and structure is complex, due to use environment,
The problems such as cycle and ageing equipment, quality, lift car all can be caused no to constrain or finite constraint in the case of drop, tool
There is more serious safety problem.In prior art, in order to solve by car rigid touch bottom (directly dropping to shaft bottom) to taking advantage of
Seated user causes serious danger, arranges buffer unit in shaft bottom；It is hydraulic cushion for express elevator buffer unit, for
Slower elevators then typically adopt buffer spring structure, and so consider mainly the coefficient of elasticity of spring, stroke and car it
Between relation, therefore, express elevator then can not otherwise have the sense of obvious rigid touch bottom using the larger spring of coefficient of elasticity
Feel, thus causing the accident.
Accordingly, it would be desirable to improve to existing elevator cushion construction, it is suitable to all cage type elevators and uses, bottom out in car
In buffering course, damping force is gradually increased, and increase process is rapid and gentle compared with common spring, realizes the flat of downstream buffer
Pliable and there is enough damping forces, therefore compared with prior art can increase the coefficient of elasticity of cushion stroke and gradual change, lifting
The security performance of elevator.
Content of the invention
In view of this, it is an object of the invention to provide a kind of elevator cushion system with mutative damp power, it is suitable to all van-types
Elevator uses, and bottoms out damping force in buffering course in car and is gradually increased, and increase process is put down rapidly compared with common spring
Slow, realize the ride comfort of downstream buffer and there is enough damping forces, therefore compared with prior art can increase cushion stroke and
The coefficient of elasticity of gradual change, the security performance of hoisting elevator.
The elevator cushion system with mutative damp power of the present invention, is used for preventing electricity including being fixedly installed on elevator bottom
Elevator car body rigid touch bottom buffering assembly；Described Buffer Unit include being arranged on the basis of buffer spring and be supported in buffer spring
The buffer board at top, just to elevator car bottom, described buffer spring is variable-pitch spring to described buffer board；
Further, the pitch of described buffer spring becomes larger from bottom to top；
Further, also include reducing damper assembly；
Described reduction damper assembly includes cylinder body, damping piston and the piston rod being fixedly connected with damping piston, described work
Stopper rod is engaged with Buffer Unit after Buffer Unit is compressed by elevator car to rebound stroke, by damping piston to buffering group
Part forms reduction damping.
Further, the buffer spring on the basis of described Buffer Unit includes being arranged at and be supported in the slow of buffer spring top
Punching, described buffer board is just to elevator car bottom；
Further, the reduction that on described buffer board be provided with fairlead and be used for piston rod engaged relative with piston rod is hindered
Buddhist nun's power fastener, described fairlead by can axially directed in the way of be coated at piston rod, described reduction damping force fastener is slow
Rush spring and be compressed between rebound stroke by elevator car and engage with piston rod, described piston normality is close to cylinder base；
Further, reduction damping force fastener is to be articulated with connecing on buffer board along piston rod in the way of can radially wobbling
Close bar, engage bar lower end be provided with the joint boss extending internally, described piston rod has for engage bar descending after with connect
Close the engagement groove that boss forms hasp；Described fairlead is provided with the groove that at least can be used for radial through engaging boss；
Further, engage bar and pass through gravity vertically downward, joint boss extends inward into fairlead and extended distance makes to connect
Close boss inner end and can extend into engagement groove；The groove being used for by engaging boss on described fairlead is tangential in fairlead
Become spacing to engaging boss shape.
Further, described joint boss lower surface is the acclivitous inclined-plane of ecto-entad, and described piston rod top is cone
Platform structure；
Further, described engagement groove is the cannelure around piston rod；
Further, the lower edge of described engagement groove is less than the axial location engaging boss during buffer spring limited compression.
Beneficial effects of the present invention: the elevator cushion system with mutative damp power of the present invention, buffer spring is using traitorous
Away from spring, bottom out damping force in buffering course in car and be gradually increased, and increase process is rapid and gentle compared with common spring,
Realize the ride comfort of downstream buffer and there is enough damping forces, therefore compared with prior art can increase cushion stroke and gradual change
Coefficient of elasticity, the technical scheme of automatic adjustment spring this critical performance parameters of power can be formed, being applicable to express elevator makes
With there is the effect of dynamic application at any time so that car bottoms out the comfortableness of moment that is front and contacting Buffer Unit and reliability
Property effectively improves, the security performance of hoisting elevator.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the present invention.
Specific embodiment
Fig. 1 is the structural representation of the present invention, as shown in the figure: the elevator cushion system with mutative damp power of the present embodiment
System, is used for preventing elevator car 1 rigid touch bottom buffering assembly including being fixedly installed on elevator bottom；Described Buffer Unit includes
The buffer spring 3 being arranged on basis 8 and the buffer board 15 being supported in buffer spring 3 top, described buffer board 15 is just to elevator
Envelope 1 bottom, described buffer spring 3 is variable-pitch spring；Basis 8 refers to the basis of the installation for Buffer Unit；As
Shown in figure, on the basis of be additionally provided with spring base 6 for installing buffer spring 3, can be used for adjusting the maximum compression stroke of spring 3
With limited compression position；The quantity of buffer spring 3 can be installed as needed, and generally more than three along the circumferential direction uniform
Setting；Buffer board 15 can be installed using lead with buffer spring 3 top and coordinate and welded, it is to avoid send out when buffering or bounce-back
Raw disengaging.
In the present embodiment, the pitch of described buffer spring 3 becomes larger from bottom to top；Can be in the wink of elevator car 1 contact
Between can submissive buffering at once, and be gradually increased coefficient of elasticity.
In the present embodiment, described buffering assembly also includes reducing damper assembly, and reduction damper assembly includes cylinder body 9, damping
Piston 10 and the piston rod 12 being fixedly connected with damping piston 10, described piston rod 12 is compressed by elevator car 1 in Buffer Unit
Engage with Buffer Unit to rebound stroke afterwards, reduction damping is formed by damping piston 10 to Buffer Unit, reduction damping refers to
Be after being compressed reduction deformation when formed damping；The mode that piston rod 12 is engaged with Buffer Unit can using mechanical type certainly
Dynamic lock, electromagnetism joint etc. mode, certainly, electromagnetism engages to be needed data to be acquired and automatically controls, and here is not
Repeat again；As illustrated, damping hole (being sized as needed and quantity) is had on damping piston 10, in cylinder body, it is full of fluid
Or the damping liquids such as magnetic flow liquid, when piston moves under external force, damping liquid is only passed through by damping hole, and stroke hinders
Buddhist nun；As illustrated, cylinder body 9 is embedded among basis 8, top is sealed by cylinder cap 11, and cylinder cap 11 is by being embedded in the lower margin on basis 8
Bolt 7 is sealedly attached to cylinder body；The structure being combined with reduction damper assembly using buffering spring component, bottoms out buffering in car
Terminate pre reduction damper assembly and engage the effect playing the speed limiting resilience it is ensured that gentle resilience, and utilize Buffer Unit
Realize downstream buffer, due to reducing the presence of damper assembly, also can increase cushion stroke and the coefficient of elasticity of Buffer Unit, in conjunction with
The buffer spring of pitches, can more mitigation realization buffering, avoid quick resilience using reduction damping after buffering it is ensured that final
Buffering effect；Therefore, this structure is suitable to all cage type elevators and uses, when elevator accident bottoms out, ensure that gentle, by
Compression buffering gradually and return, it is to avoid because buffer spring coefficient of elasticity is excessive or compression travel is long and lead to secondary
Rebound the security incident causing.
In the present embodiment, relative with piston rod 12 be provided with described buffer board 15 fairlead 4 and for and piston rod 12
Engage reduction damping force fastener 14, described fairlead 4 by can axially directed in the way of be coated at piston rod 12, described reduction
Damping force fastener is compressed between rebound stroke by elevator car 1 in buffer spring 3 and is engaged with piston rod 12, described piston 10
Normality is close to cylinder body 9 bottom；This structure can ensure that buffer board 15 is stablized descending after being compressed in buffer spring 3, and ensures also
Former damping force fastener 14 aligns joint with piston rod 12.
In the present embodiment, reduction damping force fastener 14 is to be articulated with buffering in the way of can radially wobbling along piston rod 12
Joint bar on plate 15, engages bar lower end and is provided with the joint boss 13 extending internally, described piston rod 12 has for connecing
With the engagement groove 5 engaging boss 13 formation hasp after conjunction bar is descending；Described fairlead 4 be provided with least can be used for radial through
Engage the groove 2 of boss 13；Buffer board overcomes the elastic force compression spring of buffer spring 3 in the presence of lift car whereabouts,
Lift car 1 drops to joint boss 13 during setting position and embeds engagement groove 5, and now piston rod 12 contacts with engaging boss 13
Position there is inclination, to produce radially outer component, set back and make to connect at boss engaging after making joint bar outside
Close boss and embed engagement groove；This setpoint distance normally close in the limited compression position of buffer spring, to give full play to spring
Buffering, extend compression travel.
In the present embodiment, engage bar pass through gravity vertically downward, engage boss 13 extend inward into fairlead and extend away from
Can extend into engagement groove 5 from making joint boss 13 inner end；It is used on described fairlead 4 leading by engaging the groove of boss
Tangential to set 4 becomes spacing to joint boss shape, the tangential direction tangentially referring to along the circumferential direction of fairlead 4；Structure letter
Single and easy for installation, and ensure to engage joint between boss 13 and engagement groove 5 and separate, it is to avoid there is deviation, particularly
Reduction damping process upon engagement, prevents from disengaging thus avoiding losing damping force.
In the present embodiment, described joint boss 13 lower surface is the acclivitous inclined-plane of ecto-entad, described piston rod 12
Top is frustum structure；Frustum structure ensure that with the structure that inclined-plane combines and produces radially outer point in the moment contacting
Power, it is to avoid disturb, so that engaging process is smooth.
In the present embodiment, described engagement groove 5 is the cannelure around piston rod；Processing simply and readily engages, it is to avoid
Because the bonding station that the rotation of piston rod 12 leads to does not correspond to.
In the present embodiment, the lower edge of described engagement groove 5 is less than the axle engaging boss 13 during buffer spring 3 limited compression
To position, it is to avoid engaging boss 13 and exceed engagement groove 5 during descending, preventing the rigid contact that there is no need, thus keeping away
Exempt from the damage of generation part.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (7)
1. a kind of elevator cushion system with mutative damp power it is characterised in that: include being fixedly installed on elevator bottom and being used for
Prevent elevator car rigid touch bottom buffering assembly；Described Buffer Unit include being arranged on the basis of buffer spring and be supported in slow
Rush the buffer board of spring top, just to elevator car bottom, described buffer spring is variable-pitch spring to described buffer board；
Also include reducing damper assembly；Described reduction damper assembly is included cylinder body, damping piston and is fixedly connected with damping piston
Piston rod, described piston rod engaged with Buffer Unit after Buffer Unit is compressed by elevator car to rebound stroke, by
Damping piston forms reduction damping to Buffer Unit；Relative with piston rod be provided with described buffer board fairlead and for and work
Stopper rod engage reduction damping force fastener, described fairlead by can axially directed in the way of be coated at piston rod, described reduction
Damping force fastener is compressed between rebound stroke by elevator car in buffer spring and is engaged with piston rod, and described piston normality connects
Nearly cylinder base.
2. the elevator cushion system with mutative damp power according to claim 1 it is characterised in that: described buffer spring
Pitch becomes larger from bottom to top.
3. the elevator cushion system with mutative damp power according to claim 1 it is characterised in that: reduction damping force engage
Part is the joint bar being articulated with buffer board in the way of can radially wobbling along piston rod, engages bar lower end and is provided with and extends internally
Engage boss, described piston rod has for engage bar descending after with engage boss formation hasp engagement groove；Described
Fairlead is provided with the groove that at least can be used for radial through engaging boss.
4. the elevator cushion system with mutative damp power according to claim 3 it is characterised in that: engage bar pass through gravity
Vertically downward, joint boss extends inward into fairlead and extended distance makes joint boss inner end can extend into engagement groove；
It is used on described fairlead becoming spacing in the tangential of fairlead to joint boss shape by the groove engaging boss.
5. the elevator cushion system with mutative damp power according to claim 3 it is characterised in that: described joint boss under
End face is the acclivitous inclined-plane of ecto-entad, and described piston rod top is frustum structure.
6. the elevator cushion system with mutative damp power according to claim 3 it is characterised in that: described engagement groove is
Cannelure around piston rod.
7. the elevator cushion system with mutative damp power according to claim 3 it is characterised in that: described engagement groove
Lower edge is less than the axial location engaging boss during buffer 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN104444693A CN104444693A (en) | 2015-03-25 |
| CN104444693B true CN104444693B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (5)
| 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 |
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2298232Y (en) * | 1996-06-06 | 1998-11-25 | 张学强 | Safety device for elecvator |
| JP3795792B2 (en) * | 2001-11-05 | 2006-07-12 | 三菱電機株式会社 | Multistage hydraulic shock absorber |
| JP4301837B2 (en) * | 2002-05-21 | 2009-07-22 | 三菱電機株式会社 | Elevator shock absorber |
| JP2004051237A (en) * | 2002-07-16 | 2004-02-19 | Otis Elevator Co | Spring shock absorber for elevator |
| JP2005172128A (en) * | 2003-12-11 | 2005-06-30 | Mitsubishi Electric Corp | Oil-filled shock absorber |
| JP4992556B2 (en) * | 2007-06-04 | 2012-08-08 | 三菱電機株式会社 | Elevator oil-filled shock absorber |
| JP2014084204A (en) * | 2012-10-24 | 2014-05-12 | Mitsubishi Electric Corp | Shock absorber for elevator |
| CN203187242U (en) * | 2013-04-11 | 2013-09-11 | 长安大学 | Semi-active shock absorption 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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| CN104444693A (en) | 2015-03-25 |
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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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