CN203513025U - Elevator with car tension spring buffer unit - Google Patents
Elevator with car tension spring buffer unit Download PDFInfo
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- CN203513025U CN203513025U CN201320638477.3U CN201320638477U CN203513025U CN 203513025 U CN203513025 U CN 203513025U CN 201320638477 U CN201320638477 U CN 201320638477U CN 203513025 U CN203513025 U CN 203513025U
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- Prior art keywords
- car
- extension spring
- elevator
- top board
- pit
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- 239000006096 absorbing agent Substances 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010057071 Rectal tenesmus Diseases 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000012271 tenesmus Diseases 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
An elevator with a car tension spring buffer unit comprises a car (16), a counter-weight frame (1) and a counter-weight guide rail (13). The elevator is characterized in that a car tension spring buffer (9) is arranged on the well wall of the counter-weight guide rail (13), a location plate (10) is fixed on the well wall above the car tension spring buffer (9), and a buffer cushion (15) is laid in a well bottom pit. According to the elevator, when the car crashes the bottom, the car tension spring buffer can retard the car falling speed, and the car can be stopped by a location bar of the well top; meanwhile, the arrangement of the bottom pit car tension spring buffer is changed, and the flexible buffer cushion is laid in advance in the bottom pit, so that casualties caused by careless falling of passengers into the well can be prevented.
Description
Technical field
The utility model relates to the elevator of vertical lift, is a kind of elevator with car extension spring shock absorber specifically.
Background technology
Elevator is the building insight time-saving vertical transportation instrument that in modern society, people commonly use; and car buffer is last proof protecting device that can not stop after Lift out of order in pit; its effect is the speed when slowing down at the bottom of Jiao Xiang Dun, thus protection passenger's life security.And actual conditions are, when the accidents such as car of slipping when elevator make at the bottom of Jiao Xiang Dun, still there is the generation of many casualty accidents, in addition, also have some passengers surprisingly to crash into after hoistway, drop on and on car buffer, also caused some casualty accidents.
Summary of the invention
Technical problem to be solved in the utility model is to address the above problem, and a kind of elevator with car extension spring shock absorber is provided.
The described elevator with car extension spring shock absorber, comprise car, counterweight frame, counter weight guide track, it is characterized in that: car extension spring energy disperser is housed on the well enclosure of counter weight guide track side, on well enclosure directly over described car extension spring energy disperser, fixing dress locating plate is equipped with cushion rubber in the pit of hoistway.
As the feasible embodiment of a kind of low cost, described car extension spring energy disperser comprise vertical installation extension spring, with the fixing hook in extension spring lower end, with the fixing top board in extension spring top, described hook is hooked on the link that is fixed on well enclosure, and the normality of described top board is to be shelved on the top plate supporting that is fixed on well enclosure.
A kind of embodiment, described top board stretches out 5～30cm perpendicular to wall, described counterweight frame is installed with block in the corresponding top board of vertical direction position, when described top plate supporting is fixedly mounted on car and is positioned at bottom level position corresponding counterweight frame block directly over position, so that car during lower than level position, upwards drives described top board to depart from top plate supporting at bottom.
As embodiment, described locating plate meets in the distance of top plate supporting described in distance above top plate supporting: when car drops, because locating plate is to the stopping of the top board of car extension spring energy disperser upper end, and make the bottom surface of car can not touch the cushion rubber of pit.
When the utility model makes at the bottom of the Dun of sedan-chair railway carriage or compartment, car extension spring energy disperser can slow down the lapse rate of car, and by the radius stay of well headroom institute stop.Meanwhile, changed the setting of pit car buffer, in pit, laid in advance flexible cushion rubber, can prevent from, after passenger from crashing into hoistway accidentally, casualty accident occurs.
Accompanying drawing explanation
Fig. 1 is the utility model integral installation view,
Fig. 2 be the A of this device in Fig. 1 to schematic diagram,
Fig. 3 is that the utility model is used view,
Fig. 4 is that the B of Fig. 3 is to view.
In figure: 1-counterweight frame, 2-block, 3-hoist ropes, 4-top board, 5-top plate supporting, 6-bolt, 7-wall, 8-adapter plate, 9-car extension spring energy disperser, 10-locating plate, 11-link, 12-hook, 13-counter weight guide track, 14-pit, 15-cushion rubber, 16-car.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated: as shown in Fig. 3,4, the described elevator with car extension spring shock absorber, comprise car 16, counterweight frame 1, counter weight guide track 13, as Fig. 1,2, car extension spring energy disperser 9 is fixedly housed on the elevator shaft wall between counter weight guide track 13, on elevator shaft wall directly over described car extension spring energy disperser 9, locating plate 10 is fixedly housed, in the pit of hoistway, is equipped with cushion rubber 15.
As Fig. 1,2, as the feasible embodiment of a kind of low cost, described car extension spring energy disperser 9 comprise vertical installation extension spring, with the fixing hook 12 in extension spring lower end, with the fixing top board 4 in extension spring top, described hook 12 is hooked on the link 11 that is fixed on wall, the normality of described top board 4 is to be shelved on the top plate supporting 5 that is fixed on well enclosure, when described top plate supporting 5 is fixedly mounted on car and is positioned at bottom level position corresponding counterweight frame 1 position directly over.In Fig. 1 embodiment, top plate supporting 5 and link 11 are fixedly mounted on the wall 7 of hoistway by bolt 6.
As Fig. 1, a kind of embodiment, described top board 4 stretches out 5～30cm perpendicular to wall, and described counterweight frame 1 is installed with block 2 in the corresponding top board of vertical direction 4 positions, so that car during lower than level position, upwards drives described top board 4 to depart from top plate supporting 5 at bottom.
As embodiment, described locating plate 10 distance of top plate supporting 5 described in distance above top plate supporting 5, due to the stopping of the top board 4 of 10 pairs of car extension spring energy disperser 9 upper ends of locating plate, and makes can not touch bottom car the cushion rubber 15 of pit while making car tenesmus.
When elevator normally moves, block 2 can not touch top board 4, and elevator can move normally; When elevator occurs slipping the faults such as car and safety tongs while not moving, block 2 will be by driving top board 4 stretching car extension spring energy dispersers 9, thereby car is slowed down and bar 10 stops that are finally positioned.
Due in the case, in hoistway, lower limit and smallest limit switch have all moved, therefore do not need safety return circuit switch has been installed again on this car extension spring energy disperser.
In use at ordinary times, when passenger crashes into after hoistway accidentally, the flexo cushion of laying in advance at pit can prevent the generation of casualty accident.
With load-carrying 1000kg, speed is 1m/s below, and floor height h is 3.5m, and floor is 12 layers, and the elevator that pit depth is 1.5m is example, illustrates how to implement this technical scheme.
Suppose: car is because overload 200kg is starting to slip car for 5th floors, and safety tongs not action for some reason, because car and counterweight are the relations of balance semi-load, car is equivalent to the weight of 700kg, with the acceleration/accel of the 10m/s2 pit that drops.
We require car distance of 0.5 meter below Stall sill to stop lentamente.
Moment at counterweight frame connect spring, according to conservation of energy theorem, have: mgh=1/2*mV
t 2
Wherein: h=14m, g=10m/s
2; H is floor height, and g is acceleration due to gravity.
End speed: V
t=√ (2gh)=√ (2*10*14)=16.7m/s,
At car, have in by the process of counterweight frame one side spring stop: V
t 2-V
0 2=2as
Wherein: V
tfor end speed, V
0for initial velocity, s is distance, and a is acceleration/accel,
V
t=0，V
0=16.7m/s，s=0.5m，
a=V
t 2-V
0 2/2s=0-16.7
2/2*0.5=278m/s
2=27g
According to < < Popular Science > >, a research of publication recently shows, the acceleration/accel of 14 g can allow people's organ separated, and the acceleration/accel of 4 to 8 g can allow people go into a coma.If situation is really like this, none escapes by luck the interior passenger of that sedan-chair.Yet in actual life, when car slips car, passenger is generally injured and seldom occur dead situation, this just illustrates when elevator slips car, resistance, the friction force of shoe guide and the effect of air resistance due to the coil cutting stator magnetic field of band-type brake (now skidding), permagnetic synchronous motor, car can be with the much lower speed tenesmus of force of gravity acceleration/accel, and this consequence is also very serious certainly.
Now or for this example above, illustrate how to implement this technical scheme.
Or hypothesis: car is because overload 200kg is starting to slip car for 5th floors, and safety tongs not action for some reason, car is equivalent to the weight of 700kg, but now car can not drop and arrive pit with acceleration/accel again, because no matter at any floor, when elevator slips the distance of car, reach after 300 millimeters, two of the left and right pin that car can be gone out by sedan-chair end stretch is stuck on well enclosure.Refer to " the flexible flat bed safety tongs of a kind of novel electromechanical formula " patent application, number of patent application: 201320180513.6.
The unique effect of car buffer is exactly the impact to pit while preventing at the bottom of Jiao Xiang Dun so.So can design like this spring:
When the buting iron of car one side is pressed onto after smallest limit switch, main frame band-type brake is bound to brake, consider that the tension spring tension A(on counterweight frame refers to < < spring installation > > mono-literary composition for elevator operation balance, 201320272317.1) and the effect of main frame band-type brake (establishing band-type brake power B >=3000N) number of patent application:, the stressed F of real work of car buffer extension spring is:
F=7000-A-B=7000-600--3000=3400N,
Known: spring tensile deformation amount λ
1during=50mm, pulling force P
1=350N; Tensile deformation amount λ
2during=500mm, pulling force P
2=3500N, car is only stopped by counterweight energy disperser on one side during lower than Stall sill 500mm, because the upper plane at the bottom of sedan-chair approximately has the thickness of 500 millimeters to the bottom surface of underbeam, now, car frame plank bottom surface and pit ground also have the distance of 500 millimeters, so can put the cushion rubber of 500 millimeters thick.
Cushion rubber be one 1.6 meters * 1.4 meters thick be the plastic flagstone of 30 millimeters, at this, above plastic flagstone, lay the rubber plastic pad (this thickness is disregarded in 500 millimeters of cushion rubber) of 100 millimeters thick, below plastic flagstone, lay uniformly 7*8 identical and uniform metal compression springs, the parameter of stage clip is: external diameter is 50 millimeters, internal diameter is 40 millimeters, free height is 470 millimeters, and the number of coils is 92, (computation process slightly).
Pass through V
t 2-V
0 2=2as calculates, can learn: this cushion rubber only can guarantee that passenger preserves from when 1-2 layer Room door crashes into pit accidentally, if guarantee the safety of passenger when more the Room door of high-storey crashes into pit accidentally, must be in pit, allow under car the local ground of 1.6 meters * 1.4 meters some degree of depth that decline, cushion rubber is placed on to the motion that also can not affect trailing cable in this melt pit, the bottom surface of size guide rail does not need change yet, several switches of pit can move on to the top of hoistway, and generally maintainer will no longer descend pit.
1. according to service conditions selection material definite its permissible stress: [τ].
Because spring is subject to variable load number of times at 1*10
3under above condition, work, can consider by III class spring.Now select I group carbon spring steel wires.Pulling strengrth limit > by table < spring wire selects σ B=1177MPa,
According to the known permissible stress of table: [τ]=0.5 σ B=0.5*1177MPa=588MPa.
2. according to strength condition, calculate spring wire diameter: d.
Now choose and curl up than C=8, obtain COEFFICIENT K: K=(4C-1)/(4C-4)=31/28=1.1,
: d>=1.6 √ (KP
2c/[τ])=1.6 √ (1.1*3500*8/588)=11.57mm, gets d=12mm
By: C=D/d obtains: spring mean coil diameter: D=C*d=8*12=96mm
Spring inside diameter: D1=D-d=96-12=84mm,
Spring outer diameter: D2=D+d=96+12=108mm
3. according to rigidity condition, calculate number of coils n.
Because rigidity k p is:
kp=（P
2-P
1）/（λ
2-λ
1）=（3500-350）/(500-50)=7N/mm
By table < spring common used material and permissible stress > thereof, get G=79000MPa corresponding in table,
Therefore number of coils n:
N=Gd
4/ 8D
3kp=79000*12
4/ 8*96
3* 7=33.06 gets: n=34 circle.
4. checking computations:
1) spring initial tension: P
0=P
1-kp λ
1=350-7 * 50=0N
Initial stress τ
0': τ
0'=8KP
0d/3.14d
3=8*1.1*0*96/3.14*12
3=0MPa.
2) maximal work stress τ
lim
Get: τ
lim=1.12[τ]: τ
lim=1.12 * 588MPa=658.56MPa
3) maximal work load p
lim:
P
lim=3.14*d
3τlim/8DK=3.14*12
3*658.56/8*96*1.1=4230N，
Deflection: λ is installed
0=(P
1-P
0)/kp=(350-0)/7=50mm=λ
1,
Working deformation amount: λ
2=(P
2-P
0)/kp=(3500-0)/7=500mm,
Forced stroke: λ
2-λ
1=500-50=450mm,
Spring overall length (approximately): L=3.14*D*n=3.14*96*34=10249mm,
Spring weight (approximately): W=3.14*6
2* 10249*7.8 gram/cc=9 kilograms,
The drift H of spring
0=(n+1) d+2D=(34+1) 12+2*96=0.61 rice,
5, structure design: selected two ends shackle, and calculate overall dimension (being omitted).
6, the installation of spring bumper:
When the position of car at Stall flat bed, on counterweight, to lead boots place and do mark, the upper end of buffer spring being installed in the position of the block 2 at counterweight frame upper beam middle part is not then fixed on the lower hook of spring on wall in the situation that spring vertically stresses.
When at the bottom of car Yi building Dun, the block 2 at counterweight frame upper beam middle part can be avoided the lower hook of car buffer spring and act on rising to the bait of extension spring on top board 4, and the worst situation is that car is slowly decelerated under Stall sill 500 millimeter bar 10 stops that are positioned.
In this case, passenger can push gate aside, sees that the quilt cover of Room door is being write: right hand stay cord, left hand is taken off door.Like this, passenger just can save oneself, and now the smallest limit switch of elevator is held down, Room gate also opened, so car can not move again, passengers can leave car at leisure.
If at the bottom of the rear directly lower sliding Dun of car 12 building overload, the action because Novel safety tongs is bound under the effect that has machinery and at least three road velocity of electrons fender guards, so kind situation is not considered.
Claims (4)
1. the elevator with car extension spring shock absorber, comprise car (16), counterweight frame (1), counter weight guide track (13), it is characterized in that: car extension spring energy disperser (9) is housed on the well enclosure of counter weight guide track (13) side, locating plate (10) is fixedly housed on the well enclosure directly over described car extension spring energy disperser (9), in the pit of hoistway, is equipped with cushion rubber (15).
2. the elevator with car extension spring shock absorber according to claim 1, it is characterized in that: described car extension spring energy disperser (9) comprise vertical installation extension spring, with the fixing hook (12) in extension spring lower end, with the fixing top board (4) in extension spring top, described hook (12) is hooked on the link (11) that is fixed on well enclosure, and the normality of described top board (4) is to be shelved on the top plate supporting (5) that is fixed on well enclosure.
3. the elevator with car extension spring shock absorber according to claim 2, it is characterized in that: described top board (4) stretches out 5～30cm perpendicular to wall, described counterweight frame (1) is installed with block (2) in the corresponding top board (4) of vertical direction position, when described top plate supporting (5) is fixedly mounted on car and is positioned at bottom level position corresponding counterweight frame block (2) directly over position, so that car during lower than level position, upwards drives described top board (4) to depart from top plate supporting (5) at bottom.
4. according to the elevator with car extension spring shock absorber described in claim 2 or 3, it is characterized in that: described locating plate (10) meets in the distance of top plate supporting (5) described in the distance of top plate supporting (5) top: when car (16) drops, because locating plate (10) is to the stopping of the top board (4) of car extension spring energy disperser (9) upper end, and make the bottom surface of car can not touch the cushion rubber (15) of pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320638477.3U CN203513025U (en) | 2013-05-23 | 2013-10-16 | Elevator with car tension spring buffer unit |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320287288 | 2013-05-23 | ||
| CN201320287288.6 | 2013-05-23 | ||
| CN201320638477.3U CN203513025U (en) | 2013-05-23 | 2013-10-16 | Elevator with car tension spring buffer unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203513025U true CN203513025U (en) | 2014-04-02 |
Family
ID=50371984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320638477.3U Expired - Lifetime CN203513025U (en) | 2013-05-23 | 2013-10-16 | Elevator with car tension spring buffer unit |
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| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261227A (en) * | 2014-10-23 | 2015-01-07 | 苏州新达电扶梯部件有限公司 | Elevator safety protection device |
| CN104477744A (en) * | 2014-12-11 | 2015-04-01 | 沃克斯电梯（中国）有限公司 | Lift car of high-speed elevator |
| CN106006294A (en) * | 2016-04-26 | 2016-10-12 | 大连华工创新科技股份有限公司 | Elevator buffer device |
-
2013
- 2013-10-16 CN CN201320638477.3U patent/CN203513025U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261227A (en) * | 2014-10-23 | 2015-01-07 | 苏州新达电扶梯部件有限公司 | Elevator safety protection device |
| CN104477744A (en) * | 2014-12-11 | 2015-04-01 | 沃克斯电梯（中国）有限公司 | Lift car of high-speed elevator |
| CN106006294A (en) * | 2016-04-26 | 2016-10-12 | 大连华工创新科技股份有限公司 | Elevator buffer device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN TIANYU STAIRCASE INDUSTRY CO., LTD. Free format text: FORMER OWNER: YAO CHANGYUN Effective date: 20150105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430010 WUHAN, HUBEI PROVINCE TO: 430000 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150105 Address after: 430000 room 1203, Wuhan SOHO international city, Huaihailu Road, Jianghan District, Hubei, China Patentee after: Wuhan Tianyu ladder Co. Address before: 430010 No. 503, No. 23, landslide, Jiang'an District, Hubei, Wuhan Patentee before: Yao Changyun |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |