CN109987475A - Embedded multistage buffer of elevator and its working method - Google Patents
Embedded multistage buffer of elevator and its working method Download PDFInfo
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- CN109987475A CN109987475A CN201910355968.9A CN201910355968A CN109987475A CN 109987475 A CN109987475 A CN 109987475A CN 201910355968 A CN201910355968 A CN 201910355968A CN 109987475 A CN109987475 A CN 109987475A
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- elevator
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims description 37
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims 1
- 238000007747 plating Methods 0.000 description 15
- 238000003780 insertion Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 10
- 230000003139 buffering effect Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000002427 irreversible effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000010727 cylinder oil Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The present invention provides the embedded multistage buffer of elevator of one kind and its working method, it is characterized by: the hydraulic cylinder that wherein embedded multistage buffer of elevator includes hydraulic cylinder bottom plate and is located on hydraulic cylinder bottom plate, in the hydraulic cylinder body sealing be equipped with can along hydraulic cylinder body the second level plunger of lifting carriage and the second level reset spring below the plunger of the second level, in the second level plunger body sealing be equipped with can along the plunger body of the second level first order plunger of lifting carriage and the first order reset spring below first order plunger, the hydraulic cylinder, the inner cavity of second level plunger and first order plunger is mutually communicated, and in hydraulic cylinder, the interior of second level plunger and first order plunger intracavitary is perfused with hydraulic oil.The embedded multistage buffer of elevator simple structure and reasonable design of the present invention solves the problems, such as that increase-volume is raised speed the technical bottleneck of high transport power passenger lift in the case where not changing former well pit building structure.
Description
Technical field:
The present invention relates to a kind of embedded multistage buffer of elevator and its working methods.
Background technique:
A large amount of building waste a large amount of time because of awaiting elevator in flow of personnel peak period at present, significantly reduce
The value of property；The high transport power passenger lift of increase-volume speed-raising is to install patronage on the basis of not changing former hoistway building structure
More, the faster lift product of speed, and increase to be configured with and promote delivery efficiency and reduce because maloperation causes transport power to decline
New function makes original 2-3 times of vertical transport capability improving, effectively alleviates the traffic conditions in original building, improve object
Industry value.
Buffer of elevator is one of extremely important safety component of elevator, by GB7588 " elevator manufacture and installation safety rule
Model " regulation, when elevator speed ν >=2.0 m/s, it is necessary to configure hydraulic buffer；Suitable oil pressure is slow currently on the market
Rushing device needs pit height to be typically greater than 1.8 meters, and pit height can not change in former hoistway building structure.
Summary of the invention:
The purpose of the present invention is to provide a kind of embedded multistage buffer of elevator and its working method, the embedded multistage elevators
Buffer structure is simple, design is reasonable, in the case where not changing former well pit building structure, solves increase-volume speed-raising Gao Yun
The technical bottleneck problem of power passenger lift.
To achieve the above object, the present invention adopts the following technical scheme:
The embedded multistage buffer of elevator of the present invention, it is characterised in that: including hydraulic cylinder bottom plate and be located at hydraulic cylinder bottom plate
On hydraulic cylinder, in the hydraulic cylinder body sealing be equipped with can along hydraulic cylinder body the second level plunger of lifting carriage and position
Second level reset spring below the plunger of the second level, the interior sealing of the second level plunger body is equipped with can be along the plunger body of the second level
The first order plunger of lifting carriage and the first order reset spring below first order plunger, the hydraulic cylinder, the second level
The inner cavity of plunger and first order plunger is mutually communicated, and the intracavitary filling in hydraulic cylinder, second level plunger and first order plunger
It is marked with hydraulic oil.
Further, hydraulic cylinder bottom plate is located in above-mentioned hydraulic cylinder body and is equipped with second level retainer, described second
Bottom is equipped with first order retainer in grade plunger body.
Further, above-mentioned first order retainer, second level retainer are cylinder, are located at the first order and reset bullet
The barrel of the inner circumferential of spring and second level reset spring, the first order retainer and second level retainer is equipped with oil-through-hole.
Further, the bottom of above-mentioned second level plunger has the second resistance of perforation second level plunger and hydraulic cylinder inner cavity
Buddhist nun hole, the bottom of the first order plunger have the first damping hole of perforation first order plunger and second level plunger cavity.
Further, the bottom face of above-mentioned second level plunger has the second outer protruding portion, is equipped in the port of hydraulic cylinder
The second level contact of the second outer protruding portion is limited, the periphery wall of the internal perisporium and second level plunger of the second level contact is close
Envelope cooperation；The bottom face of the first order plunger has the first outer protruding portion, and in the second level, the port of plunger is equipped with limit first
The first order contact of outer protruding portion, the internal perisporium of the first order contact and the periphery wall of first order plunger seal and cooperate.
Further, above-mentioned hydraulic cylinder bottom plate crosses beam hanger equipped with cone-shaped.
Further, the lower section of above-mentioned hydraulic cylinder bottom plate is equipped with the pedestal for being fixed on elevator shaft pit bottom, described
The polyurethane buffering positioned at the disk spring of central part and set on disk spring circumference is equipped between pedestal and hydraulic cylinder bottom plate
Device.
Further, above-mentioned first order upper end head is equipped with the noise reduction set ramed and be located at by periphery of raming.
The working method of the embedded multistage buffer of elevator of the present invention, it is characterised in that: the embedded multistage elevator is slow
The hydraulic cylinder that device includes hydraulic cylinder bottom plate He is located on hydraulic cylinder bottom plate is rushed, the interior sealing of the hydraulic cylinder body is equipped with can
The second level plunger of lifting carriage and the second level reset spring below the plunger of the second level along hydraulic cylinder body, described
Sealing, which is equipped with, in second level plunger body the first order plunger of lifting carriage and to be located under first order plunger along the plunger body of the second level
The first order reset spring of side, the inner cavity of the hydraulic cylinder, second level plunger and first order plunger are mutually communicated, and hydraulic
Oil cylinder, the interior of second level plunger and first order plunger intracavitary are perfused with hydraulic oil；In use, embedded multistage buffer of elevator is set
It is placed in elevator shaft pit bottom, the carriage or counterweight of hoistway pass through hoistway lowest level for some reason and further decline
When, carriage or counterweight and buffer are collided；First order plunger slide downward, and first order reset spring is compressed, the first order resets
After spring to the limit, second level plunger slide downward is driven together, and compress second level reset spring, second level reset spring is extremely
The limit.
Specific workflow of the present invention: embedded multistage buffer of elevator is set to elevator shaft pit bottom, hoistway
For some reason and across hoistway lowest level and when further declining, carriage or counterweight and buffer are collided for carriage or counterweight；
First order plunger slide downward, and compress first order reset spring；First order retainer is set on the plunger inner bottom plating of the second level, when
First order plunger inner bottom plating and first order stop contact, first order plunger stop independent slide downward, and with second level plunger
Slide downward together；Second level retainer is set on hydraulic cylinder bottom plate, when second level plunger inner bottom plating and second level retainer
Contact, second level plunger stop slide downward, and center was equipped with beam hanger on hydraulic cylinder bottom plate, crossed the horizontal cross-section of beam hanger
Area is formed as lower end and continuously reduces towards upper end；First order plunger inner bottom plating is equipped with the first damping of pre-determined inner diameter
Hole, second level plunger inner bottom plating is equipped with the second damping hole of pre-determined inner diameter, in hydraulic cylinder, second level plunger and first order plunger
Hydraulic oil is preserved, when buffer compresses, i.e., any level-one plunger is slided relative to hydraulic cylinder, and hydraulic oil is via the first damping
Hole and the disengaging of the second damping hole are crossed beam hanger and are inserted into the second damping hole and the first damping hole when buffer compression, mistake
The insertion of beam hanger changes with plungers at different levels relative to the displacement of hydraulic cylinder；By making beam hanger relative to each damping hole
Insertion variation control the resistance of hydraulic oil, and then control the buffering effect of buffer；When the solution pressed on buffer
After removing, under action of reset spring at different levels, plunger upward slidings at different levels, the hydraulic oil in the first plunger flows back to hydraulic cylinder and
In two plungers, buffer affranchises height condition.
The advantages of embedded multistage buffer of elevator of the invention:
(1) present invention provides embedded multistage buffer of elevator, and Multi-stage plunger is sequentially embedded in hydraulic cylinder, and effective reduction is slow
Rush device absorb, buffer of elevator oneself height after the energy of consumption moving cab or counterweight, solve raise speed high transport power of increase-volume and multiply
The technical bottleneck problem that objective elevator can not change by former hoistway low land hole building height.
(2) the hydraulic cylinder outer diameter of embedded multistage buffer of elevator is the key parameter of relationship buffer manufacturing cost.
Hydraulic cylinder outer diameter is bigger, and buffer manufacturing cost is bigger, and cost increase rate is quite big.When buffer is in free high
Degree state, if hydraulic cylinder outer diameter is smaller, buffer, which integrally seems, compares " tall and thin ", under moving cab or counterweight impact, holds
Easily there is irreversible damage, or even phenomena such as fractureing, toppling.The present invention by hydraulic cylinder be designed to can up and down micro floating, add
Big hydraulic cylinder bottom plate outside diameter, increases disk spring and polyurethane bumper absorber, it is intended to protect hydraulic cylinder and its inside
Components, phenomena such as avoiding the occurrence of irreversible damage.
(3) the embedded multistage buffer of elevator application of the present invention is very wide, is not only applicable to aging blocks and more renews ladder, can also apply
Elevator and New Dwelling and office building are installed additional in aging blocks.Especially newly-built building, most mating high speed or super high speed elevator, often
The hydraulic bjuffer of rule needs the pit of relatively high level, and area occupied is big, and building cost is high, and buffer is manufactured and is mounted to
This is also very high.Structure of the invention is compact, solid and reliable, stable, and market prospects are good.
Detailed description of the invention:
Fig. 1 is embedded multistage buffer of elevator structure chart；
Fig. 2 is the structure graph after hydraulic cylinder is shunk；
Fig. 3 is the structure chart of second level plunger bottom face；
Fig. 4 is the structure chart of polyurethane bumper absorber；
1. 4. second level reset spring of hydraulic cylinder bottom plate 2. hydraulic cylinder, 3. second level retainer, 5. second level contact
6. 10. first order contact of first order retainer 7. second level plunger, 8. first order reset spring, 9. plug cock, 11. first order
Plunger 12. ramed 13. noise reductions set 14. first damping hole, 15. oil filler point, 16. switch contact plate, 17. stroke limit open
It closes 18. switch fixing casing, 19. 20. second damping hole of oil-through-hole, 21. hydraulic oil 22. and crosses 23. locknut 24. of beam hanger
25. disk spring of polyurethane bumper absorber, 26. limited block, 27. pedestal
Specific embodiment:
The hydraulic oil that the embedded multistage buffer of elevator of the present invention includes hydraulic cylinder bottom plate 1 and is located on hydraulic cylinder bottom plate 1
Cylinder 2, sealing, which is equipped with, in 2 body of hydraulic cylinder the second level plunger 7 of lifting carriage and to be located at second along hydraulic cylinder body
The second level reset spring 4 of 7 lower section of grade plunger, the interior sealing of 7 body of second level plunger are equipped with and can rise in the plunger body of the second level
The first order plunger of sliding and the first order reset spring 8 positioned at 11 lower section of first order plunger, the hydraulic cylinder 2, second drop
The inner cavity of grade plunger 7 and first order plunger 11 is mutually communicated, and in the inner cavity of hydraulic cylinder, second level plunger and first order plunger
Inside it is perfused with hydraulic oil 21.
Further decline to limit plunger, hydraulic cylinder bottom plate is located in above-mentioned hydraulic cylinder body and is stopped equipped with the second level
Moving part 3, bottom is equipped with first order retainer 6 in the second level plunger body；Above-mentioned first order retainer, second level retainer
For cylinder, it is located at the inner circumferential of first order reset spring and second level reset spring, the first order retainer 6 and
The barrel of second level retainer 3 is equipped with oil-through-hole 19, can improve the resistance of shaping drum inside and outside hydraulic oil by oil-through-hole 19
Power situation, the first order retainer, second level retainer can limit plunger and further decline, be arranged on hydraulic cylinder bottom plate
Second level retainer 3, when second level plunger bottom plate and second level stop contact, second level plunger stops slide downward；Together
Reason, when first order plunger bottom plate and first order stop contact, first order plunger stops slide downward.
Further, the bottom of above-mentioned second level plunger has the second resistance of perforation second level plunger and hydraulic cylinder inner cavity
Buddhist nun hole, the bottom of the first order plunger have the first damping hole of perforation first order plunger and second level plunger cavity, pass through
The inner cavity phase of hydraulic cylinder 2, second level plunger 7 and first order plunger 11 is realized in the setting of first damping hole and the second damping hole
Mutually perforation, the first damping hole can be controlled with the second damping hole by changing beam hanger relative to the insertion of each damping hole
The resistance of hydraulic oil, and then control the buffering effect of buffer.
Further, the bottom face 702 of above-mentioned second level plunger has the second outer protruding portion, sets in the port of hydraulic cylinder
Have a second level contact of the second outer protruding portion 701 of limit, the internal perisporium of the second level contact and second level plunger outside
Peripheral wall sealing cooperation；The bottom face of the first order plunger has the first outer protruding portion, and in the second level, the port of plunger is equipped with limit
The first order contact of the first outer protruding portion of position, the internal perisporium of the first order contact and the periphery wall of first order plunger seal
Cooperation, the sealing that the first order contact and second level contact play the role of, while playing guiding first order plunger and the
The effect of second level plunger lifting carriage.
Further, above-mentioned hydraulic cylinder bottom plate crosses beam hanger 22 equipped with cone-shaped, this crosses the horizontal cross-section of beam hanger 22
Area is formed as lower end and continuously reduces towards upper end, and when buffer compresses, i.e., any level-one plunger is relative to hydraulic oil
Cylinder sliding, hydraulic oil can be passed in and out via the first damping hole and the second damping hole；When buffer compression, crosses beam hanger and be inserted into
Into the second damping hole and the first damping hole, the insertion of beam hanger is crossed as plungers at different levels become relative to the displacement of hydraulic cylinder
Change；The resistance of hydraulic oil is controlled by making beam hanger relative to the insertion variation of each damping hole, and then controls buffer
Buffering effect.
Further, the lower section of above-mentioned hydraulic cylinder bottom plate is equipped with the pedestal for being fixed on elevator shaft pit bottom, described
The polyurethane buffering positioned at the disk spring of central part and set on disk spring circumference is equipped between pedestal and hydraulic cylinder bottom plate
Device, when buffer is pressurized, hydraulic cylinder bottom plate can be moved down, and moving distance h is 26 bottom surface of limited block to base upper surface
Spacing.
Further, above-mentioned first order upper end head be equipped with by ram 12 and be located at by ram periphery noise reduction set 13,
This 12 is integrated by raming with first order plunger 11 upper end, and noise reduction set 13 can be rubber and be made.Second level plunger wall body
It is equipped with oil filler point 15 and plug cock 9.
The working method of the embedded multistage buffer of elevator of the present invention, it is characterised in that: the embedded multistage elevator is slow
The hydraulic cylinder that device includes hydraulic cylinder bottom plate He is located on hydraulic cylinder bottom plate is rushed, the interior sealing of the hydraulic cylinder body is equipped with can
The second level plunger of lifting carriage and the second level reset spring below the plunger of the second level along hydraulic cylinder body, described
Sealing, which is equipped with, in second level plunger body the first order plunger of lifting carriage and to be located under first order plunger along the plunger body of the second level
The first order reset spring of side, the inner cavity of the hydraulic cylinder, second level plunger and first order plunger are mutually communicated, and hydraulic
Oil cylinder, the interior of second level plunger and first order plunger intracavitary are perfused with hydraulic oil；In use, embedded multistage buffer of elevator is set
It is placed in elevator shaft pit bottom, the carriage or counterweight of hoistway pass through hoistway lowest level for some reason and further decline
When, carriage or counterweight and buffer are collided；First order plunger slide downward, and first order reset spring is compressed, the first order resets
After spring to the limit, second level plunger slide downward is driven together, and compress second level reset spring, second level reset spring is extremely
The limit.
Specific workflow of the present invention: embedded multistage buffer of elevator is set to elevator shaft pit bottom, hoistway
For some reason and across hoistway lowest level and when further declining, carriage or counterweight and buffer are collided for carriage or counterweight；
First order plunger slide downward, and compress first order reset spring；First order retainer is set on the plunger inner bottom plating of the second level, when
First order plunger inner bottom plating and first order stop contact, first order plunger stop independent slide downward, and with second level plunger
Slide downward together；Second level retainer is set on hydraulic cylinder bottom plate, when second level plunger inner bottom plating and second level retainer
Contact, second level plunger stop slide downward, and center was equipped with beam hanger on hydraulic cylinder bottom plate, crossed the horizontal cross-section of beam hanger
Area is formed as lower end and continuously reduces towards upper end；First order plunger inner bottom plating is equipped with the first damping of pre-determined inner diameter
Hole, second level plunger inner bottom plating is equipped with the second damping hole of pre-determined inner diameter, in hydraulic cylinder, second level plunger and first order plunger
Hydraulic oil is preserved, when buffer compresses, i.e., any level-one plunger is slided relative to hydraulic cylinder, and hydraulic oil is via the first damping
Hole and the disengaging of the second damping hole are crossed beam hanger and are inserted into the second damping hole and the first damping hole when buffer compression, mistake
The insertion of beam hanger changes with plungers at different levels relative to the displacement of hydraulic cylinder；By making beam hanger relative to each damping hole
Insertion variation control the resistance of hydraulic oil, and then control the buffering effect of buffer；When the solution pressed on buffer
After removing, under action of reset spring at different levels, plunger upward slidings at different levels, the hydraulic oil in the first plunger flows back to hydraulic cylinder and
In two plungers, buffer affranchises height condition.
Be further described below: embedded multistage buffer of elevator of the invention includes: hydraulic cylinder 2, hydraulic cylinder bottom
Base part below plate 1 and bottom plate.Setting Multi-stage plunger the present embodiment is equipped with second level plunger, second level column in hydraulic cylinder
Inside 7 insertion hydraulic cylinder of plug, first order plunger 11 is embedded in second level plunger body.Plungers at different levels can be slided vertically
It is dynamic, it is sequentially connected.Second level reset spring 4 is set inside hydraulic cylinder, pushes 7 upward sliding of second level plunger；Hydraulic cylinder
Upper surface inner ring is inlaid with second level contact 5, when protruding portion 701 connects with second level contact outside the plunger bottom face of the second level
Touching, second level plunger stop upward sliding and see Fig. 3.First order reset spring 8 is arranged in second level plunger body, pushes first order column
Fill in 11 upward slidings；Second level upper end face inner ring is inlaid with first order contact 10, when first order plunger bottom face is prominent
Portion is contacted with first order contact, and first order plunger stops upward sliding Fig. 1 state, i.e. buffer free height state.
Embedded multistage buffer of elevator is set to the pit part of hoistway, the carriage gone up and down in hoistway or counterweight, due to certain
When planting reason and passing through lowest level and further decline, carriage or counterweight and buffer are collided.Through noise reduction set 13 and ramed 12,
11 slide downward of first order plunger, and compress first order reset spring；First order stop is set on second level plunger inner bottom plating 702
Part 6, when first order plunger inner bottom plating and first order stop contact, first order plunger stops independent slide downward, and with second
Grade plunger slide downward together；Second level retainer 3 is set on hydraulic cylinder bottom plate 1, when second level plunger inner bottom plating and second
Grade stop contact, second level plunger stop slide downward Fig. 2 state, the i.e. complete compressive state of buffer.Hydraulic cylinder bottom plate
Upper center was equipped with beam hanger 22, and the horizontal section area for crossing beam hanger is formed as lower end and continuously reduces towards upper end.
First order plunger inner bottom plating is equipped with the first damping hole 14 of pre-determined inner diameter, and second level plunger inner bottom plating is equipped with the second of pre-determined inner diameter
Damping hole 20.Hydraulic oil 21 is preserved in hydraulic cylinder, second level plunger and first order plunger.It is when buffer compresses, i.e., any
Level-one plunger is slided relative to hydraulic cylinder, and hydraulic oil can be passed in and out via the first damping hole and the second damping hole.Work as buffer
It when compression, crosses beam hanger and is inserted into the second damping hole and the first damping hole, cross the insertion of beam hanger with plunger phases at different levels
For hydraulic cylinder displacement and change.Hydraulic oil is controlled by making beam hanger relative to the insertion variation of each damping hole
Resistance, and then control the buffering effect of buffer.In addition, plungers at different levels are to when sliding up and down, second level contact 5 and the first order
Contact 10 may insure that hydraulic cylinder and the hydraulic oil of plunger body at different levels do not leak, oil-proof, plungers especially at different levels to
Lower compression process.First order retainer 6 is circular cylinder, and lower part is equipped with oil-through-hole 19 close at bottom surface, to improve annular
The resistance situation of hydraulic oil inside and outside cylindrical body.
After pressing on the releasing on buffer, under action of reset spring at different levels, plunger upward slidings at different levels, the first column
Hydraulic oil in plug flows back in hydraulic cylinder and the second plunger, and buffer affranchises height condition.
Lead limit switch 17 is fixed on hydraulic cylinder outer round surface through switch fixing casing 18, and switch contact plate 16 is fixed on
First order plunger outer round surface.
Hydraulic cylinder is rigidly fixed on hydraulic cylinder bottom plate 1, and the base part below hydraulic cylinder bottom plate is by dish-shaped bullet
The central part of the composition such as spring 25, polyurethane bumper absorber 24, locknut 23 and pedestal 27, the disk spring is equipped with limited block,
There is gap h, when buffer is pressurized, hydraulic cylinder bottom plate can be moved down between the limited block and base upper surface
(hydraulic cylinder together with bottom plate can up and down micro floating), moving distance h be limited block bottom surface to base upper surface spacing.Limit
Position block limits the compressed stroke of disk spring, and disk spring excess compression is avoided to cause to fail.
The advantages of embedded multistage buffer of elevator of the invention:
(1) present invention provides embedded multistage buffer of elevator, and Multi-stage plunger is sequentially embedded in hydraulic cylinder, and effective reduction is slow
Rush device absorb, buffer of elevator oneself height after the energy of consumption moving cab or counterweight, solve raise speed high transport power of increase-volume and multiply
The technical bottleneck problem that objective elevator can not change by former hoistway low land hole building height.
(2) the hydraulic cylinder outer diameter of embedded multistage buffer of elevator is the key parameter of relationship buffer manufacturing cost.
Hydraulic cylinder outer diameter is bigger, and buffer manufacturing cost is bigger, and cost increase rate is quite big.When buffer is in free high
Degree state, if hydraulic cylinder outer diameter is smaller, buffer, which integrally seems, compares " tall and thin ", under moving cab or counterweight impact, holds
Easily there is irreversible damage, or even phenomena such as fractureing, toppling.The present invention by hydraulic cylinder be designed to can up and down micro floating, add
Big hydraulic cylinder bottom plate outside diameter, increases disk spring and polyurethane bumper absorber, it is intended to protect hydraulic cylinder and its inside
Components, phenomena such as avoiding the occurrence of irreversible damage.
(3) the embedded multistage buffer of elevator application of the present invention is very wide, is not only applicable to aging blocks and more renews ladder, can also apply
Elevator and New Dwelling and office building are installed additional in aging blocks.Especially newly-built building, most mating high speed or super high speed elevator, often
The hydraulic bjuffer of rule needs the pit of relatively high level, and area occupied is big, and building cost is high, and buffer is manufactured and is mounted to
This is also very high.Structure of the invention is compact, solid and reliable, stable, and market prospects are good.
Claims (10)
1. a kind of embedded multistage buffer of elevator, it is characterised in that: including hydraulic cylinder bottom plate and be located at hydraulic cylinder bottom plate
On hydraulic cylinder, in the hydraulic cylinder body sealing be equipped with can along hydraulic cylinder body the second level plunger of lifting carriage and position
Second level reset spring below the plunger of the second level, the interior sealing of the second level plunger body is equipped with can be along the plunger body of the second level
The first order plunger of lifting carriage and the first order reset spring below first order plunger, the hydraulic cylinder, the second level
The inner cavity of plunger and first order plunger is mutually communicated, and the intracavitary filling in hydraulic cylinder, second level plunger and first order plunger
It is marked with hydraulic oil.
2. embedded multistage buffer of elevator according to claim 1, it is characterised in that: be located in the hydraulic cylinder body
Hydraulic cylinder bottom plate is equipped with second level retainer, and bottom is equipped with first order retainer in the second level plunger body.
3. embedded multistage buffer of elevator according to claim 2, it is characterised in that: the first order retainer, the
Second level retainer is cylinder, is located at the inner circumferential of first order reset spring and second level reset spring, the first order
The barrel of retainer and second level retainer is equipped with oil-through-hole.
4. embedded multistage buffer of elevator according to claim 1, it is characterised in that: the bottom of the second level plunger
The bottom of the second damping hole with perforation second level plunger and hydraulic cylinder inner cavity, the first order plunger has perforation first
First damping hole of grade plunger and second level plunger cavity.
5. embedded multistage buffer of elevator according to claim 1, it is characterised in that: the bottom end of the second level plunger
Face has the second outer protruding portion, is equipped with the second level contact for limiting the second outer protruding portion in the port of hydraulic cylinder, and described the
The internal perisporium of Secondary contact part and the periphery wall of second level plunger seal and cooperate；The bottom face of the first order plunger has first
Outer protruding portion, in the second level, the port of plunger is equipped with the first order contact of the first outer protruding portion of limit, the first order contact
The internal perisporium of part and the periphery wall of first order plunger seal and cooperate.
6. embedded multistage buffer of elevator according to claim 1, it is characterised in that: set on the hydraulic cylinder bottom plate
Have cone-shaped crosses beam hanger.
7. embedded multistage buffer of elevator according to claim 1, it is characterised in that: under the hydraulic cylinder bottom plate
Side is equipped with the pedestal for being fixed on elevator shaft pit bottom, is equipped between the pedestal and hydraulic cylinder bottom plate positioned at central part
Disk spring and polyurethane bumper absorber set on disk spring circumference.
8. embedded multistage buffer of elevator according to claim 1, it is characterised in that: the central part of the disk spring
Equipped with limited block, there is gap h between the limited block and base upper surface, when buffer is pressurized, hydraulic cylinder bottom plate can
To move down, moving distance h is spacing of the limited block bottom surface to base upper surface.
9. embedded multistage buffer of elevator according to claim 1, it is characterised in that: the first order upper end head
Equipped with the noise reduction set ramed and be located at by periphery of raming.
10. a kind of working method of embedded multistage buffer of elevator, it is characterised in that: the embedded multistage buffer of elevator
Including hydraulic cylinder bottom plate and the hydraulic cylinder being located on hydraulic cylinder bottom plate, the interior sealing of the hydraulic cylinder body is equipped with can be along liquid
The second level plunger of lifting carriage and the second level reset spring below the plunger of the second level, the second level in compressing cylinder body
In plunger body sealing be equipped with can along the plunger body of the second level first order plunger of lifting carriage and below first order plunger
The inner cavity of first order reset spring, the hydraulic cylinder, second level plunger and first order plunger is mutually communicated, and in hydraulic oil
Cylinder, the interior of second level plunger and first order plunger intracavitary are perfused with hydraulic oil；In use, embedded multistage buffer of elevator setting
In elevator shaft pit bottom, the carriage or counterweight of hoistway pass through hoistway lowest level for some reason and further decline
When, carriage or counterweight and buffer are collided；First order plunger slide downward, and first order reset spring is compressed, the first order resets
After spring to the limit, second level plunger slide downward is driven together, and compress second level reset spring, second level reset spring is extremely
The limit.
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| CN111439648A (en) * | 2020-04-18 | 2020-07-24 | 青岛科技大学 | High-rise elevator accidental falling protection device and working method |
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Application publication date: 20190709 |