CN107572350A - A kind of inside has the lift car of buffer - Google Patents
A kind of inside has the lift car of buffer Download PDFInfo
- Publication number
- CN107572350A CN107572350A CN201710893022.9A CN201710893022A CN107572350A CN 107572350 A CN107572350 A CN 107572350A CN 201710893022 A CN201710893022 A CN 201710893022A CN 107572350 A CN107572350 A CN 107572350A
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- Prior art keywords
- buffer
- car
- piston body
- fixed
- lift car
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- Granted
Links
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses the lift car that a kind of inside has buffer, it includes car body, and the side of car body has opening, two car doors being oppositely arranged are provided with opening, the bottom plate top of car body is provided with buffer, and the top of buffer is provided with supporting plate；Buffer includes base, base is fixed on the bottom plate of car body, a pair of Buffer Units are provided with base, Buffer Unit includes fixed support, expansion link is fixed with fixed support, compression spring is arranged with expansion link, the end of expansion link is fixed with limiting plate, and limiting plate is fixedly arranged at the front end with bearing block.The present invention is provided with buffer in elevator interior, two-stage type cylinder therein can enter row buffering to the people in car, car is avoided to produce infringement to human body when falling at a high speed, and whether Buffer Unit overweight to elevator can be detected while buffering using trigger and travel switch.
Description
Technical field：
The present invention relates to lift car technical field, and in particular to a kind of inside has the lift car of buffer.
Background technology：
With the fast development of China's skyscraper, elevator is increasingly widely used as effective delivery vehicle.
But elevator safety accident happens occasionally in recent years, its main cause is that existing elevator lowering buffer design is unreasonable.Original electricity
Terraced lowering buffer is provided in the mechanical buffer unit of pit, once the security system failure of elevator, cab just falls at a high speed
Mechanical collision is formed with buffer.The cushioning effect of existing buffer is extremely limited, it is impossible to plays effective safeguard protection and makees
With the personnel in car that can be fallen to high speed cause more serious wound.And existing car buffer unit is only set
Outside car, just not there is buffer unit in cab interior, and this will be caused greatly to bear to the leg of people and knee
Pressure, security needs can not be met.
The content of the invention：
The purpose of the present invention is aiming at the deficiencies in the prior art, there is provided a kind of inside has the elevator car of buffer
Railway carriage or compartment.
The technology solution of the present invention is as follows：
A kind of inside has the lift car of buffer, and it includes car body, and the side of car body has opening, opened
Two car doors being oppositely arranged are provided with mouth, the bottom plate top of car body is provided with buffer, the top peace of buffer
Equipped with supporting plate；Buffer includes base, and base is fixed on the bottom plate of car body, and a pair of buffering groups are provided with base
Part, Buffer Unit include fixed support, expansion link are fixed with fixed support, compression spring, expansion link are arranged with expansion link
End be fixed with limiting plate, limiting plate is fixedly arranged at the front end with bearing block, and bearing block is internally provided with jointed shaft, cut with scissors on jointed shaft
First connecting rod and second connecting rod are connected to, the end of first connecting rod is hinged with the first contiguous block, and the end of second connecting rod is hinged with
Two contiguous blocks, the first contiguous block are fixedly connected with the lower surface of supporting plate, the plate upper surface of the second contiguous block and car body
It is fixedly connected；Travel switch is provided between limiting plate and fixed support, limiting plate is provided with tactile close to the side of travel switch
Device is sent out, travel switch is electrically connected with the controller；A two-stage type cylinder is additionally provided between a pair of Buffer Units；Two-stage type cylinder
Including fixes sleeve, one-level cylinder, secondary cylinder, secondary cylinder includes secondary cylinder body, in the opening of secondary cylinder body
End sealing is provided with two level end cap, and air-tight movable is combined with piston rod in the central through hole of two level end cap, and the front end of piston rod is provided with
Second piston body, the rear end of piston rod are fixedly connected with fixes sleeve；One-level cylinder includes one-level cylinder body, secondary cylinder sheet
Body forms the piston rod of one-level cylinder, and secondary cylinder body is fixedly arranged at the front end with first stage piston body, is provided with first stage piston body
Pressure sensor；Fixes sleeve lower end is fixedly connected with base, and the upper end of one-level cylinder body is fixedly connected with supporting plate.
Pressure sensor is used to detect pressure medium, and pressure sensor is connected with processor module, and processor module enters one
Step is electrically connected with the controller.
Second piston body includes：The upper piston body and lower piston body being coaxially disposed, it is symmetrical on upper piston body and lower piston body
Provided with the through hole that several axially flow for medium, the sealing between upper piston body and the adjacent face of lower piston body coordinates,
Medium is only realized by each through hole on upper piston body and lower piston body comes and goes flowing.
The cavity for being used for placing motor is provided with upper piston body, motor is controlled by controller, and the end of its rotor, which is fixed, to be connected
It is connected on lower piston body, for driving the rotation of lower piston body according to pressure medium, to control on upper piston body and lower piston body
The relative position relation of each through hole, and then control rate-of flow.
Second piston body moves reciprocatingly in secondary cylinder body, and matches somebody with somebody with the inwall movable sealing of secondary cylinder body
Close.
The bottom of lift car is additionally provided with external buffer, and external buffer includes the steel plate for being fixed on cage bottom,
Steel plate bottom is welded with round steel bushing, and the multiple buffer springs and elastic rubbery body being vertically arranged are provided with round steel bushing.
The beneficial effects of the present invention are：The present invention is provided with buffer, two-stage type cylinder energy therein in elevator interior
It is enough that row buffering is entered to the people in car, avoid car from producing infringement to human body when falling at a high speed, and Buffer Unit is in the same of buffering
Whether Shi Liyong triggers and travel switch overweight to elevator can detect.
Brief description of the drawings：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of buffer；
Fig. 3 is the structural representation of secondary cylinder.
Embodiment：
In order that the above objects, features and advantages of the present invention can be more obvious understandable, below in conjunction with the accompanying drawings to this hair
Bright embodiment is described in detail.
As Figure 1-3, a kind of inside has the lift car of buffer, and it includes car body 10, car body 10
Side there is opening, two car doors being oppositely arranged 11 are provided with opening, the bottom plate top of car body 10 is provided with
Buffer, the top of buffer are provided with supporting plate 12；Buffer includes base 14, and base 14 is fixed on the bottom of car body 10
On plate, a pair of Buffer Units are provided with base 14, Buffer Unit includes fixed support 24, is fixed with fixed support 24 flexible
Bar, compression spring 25 is arranged with expansion link, the end of expansion link is fixed with limiting plate 26, and limiting plate 26 is fixedly arranged at the front end with axle
Bearing 23, bearing block 23 are internally provided with jointed shaft, first connecting rod 21 and second connecting rod 22, first connecting rod are hinged with jointed shaft
21 end is hinged with the first contiguous block, and the end of second connecting rod 22 is hinged with the second contiguous block, the first contiguous block and supporting plate
12 lower surface is fixedly connected, and the second contiguous block is fixedly connected with the plate upper surface of car body 10；Limiting plate 26 and fixation
Travel switch is provided between support 24, limiting plate is provided with trigger, travel switch and control close to the side of travel switch
Device electrically connects, and controller and then is connected with alarm；A two-stage type cylinder 3 is additionally provided between a pair of Buffer Units；Two level
Formula cylinder 3 includes fixes sleeve 30, one-level cylinder, secondary cylinder, and secondary cylinder includes secondary cylinder body 32, in secondary cylinder
The openend sealing of body 32 is provided with two level end cap, and air-tight movable is combined with piston rod 33 in the central through hole of two level end cap, living
The front end of stopper rod 33 is provided with second piston body 34, and the rear end of piston rod 33 is fixedly connected with fixes sleeve 30；One-level cylinder includes
One-level cylinder body 31, secondary cylinder body 32 form the piston rod of one-level cylinder, and secondary cylinder body 32 is fixedly arranged at the front end with
First stage piston body 35, pressure sensor 36 is provided with first stage piston body 35；The lower end of fixes sleeve 30 is fixedly connected with base 14,
The upper end of one-level cylinder body 31 is fixedly connected with supporting plate.
Pressure sensor 36 is used to detect pressure medium, and pressure sensor 36 is connected with processor module, processor module
Further it is electrically connected with the controller.
Second piston body 34 includes：The upper piston body and lower piston body being coaxially disposed, it is right on upper piston body and lower piston body
Claim to be provided with several for the through hole that medium axially flows, the sealing between upper piston body and the adjacent face of lower piston body is matched somebody with somebody
Close, medium is only realized by each through hole on upper piston body and lower piston body comes and goes flowing.
The cavity for being used for placing motor is provided with upper piston body, motor is controlled by controller, and the end of its rotor, which is fixed, to be connected
It is connected on lower piston body, for driving the rotation of lower piston body according to pressure medium, to control on upper piston body and lower piston body
The relative position relation of each through hole, and then control rate-of flow.
Second piston body 34 moves reciprocatingly in secondary cylinder body 32, and movable with the inwall of secondary cylinder body 32
Sealing coordinates.
The bottom of lift car is additionally provided with external buffer, and external buffer includes the steel plate for being fixed on cage bottom,
Steel plate bottom is welded with round steel bushing, and the multiple buffer springs and elastic rubbery body being vertically arranged are provided with round steel bushing.
The embodiment is to the illustrative present invention, not for the limitation present invention.Any those skilled in the art
The embodiment can be modified under the spirit and scope without prejudice to the present invention, therefore the rights protection model of the present invention
Enclose, should be as listed by the claim of the present invention.
Claims (6)
1. a kind of inside has the lift car of buffer, it is characterised in that：It includes car body (10), car body (10)
Side there is opening, two car doors being oppositely arranged (11) are provided with opening, the bottom plate top of car body (10) is set
Buffer is equipped with, the top of buffer is provided with supporting plate (12)；Buffer includes base (14), and base (14) is fixed on car
On the bottom plate of body (10), a pair of Buffer Units are provided with base (14), Buffer Unit includes fixed support (24), fixed branch
Expansion link is fixed with frame (24), compression spring (25) is arranged with expansion link, the end of expansion link is fixed with limiting plate (26),
Limiting plate (26) is fixedly arranged at the front end with bearing block (23), and bearing block (23) is internally provided with jointed shaft, and is hinged with jointed shaft
One connecting rod (21) and second connecting rod (22), the end of first connecting rod (21) are hinged with the first contiguous block, the end of second connecting rod (22)
Portion is hinged with the second contiguous block, and the first contiguous block is fixedly connected with the lower surface of supporting plate (12), the second contiguous block and car sheet
The plate upper surface of body (10) is fixedly connected；Travel switch, limiting plate are provided between limiting plate (26) and fixed support (24)
The side of travel switch is provided with trigger, travel switch is electrically connected with the controller；Also set up between a pair of Buffer Units
There is a two-stage type cylinder (3)；Two-stage type cylinder (3) includes fixes sleeve (30), one-level cylinder, secondary cylinder, secondary cylinder
Including secondary cylinder body (32), sealed in the openend of secondary cylinder body (32) and be provided with two level end cap, in two level end cap
Air-tight movable is combined with piston rod (33) in heart through hole, and the front end of piston rod (33) is provided with second piston body (34), piston rod
(33) rear end is fixedly connected with fixes sleeve (30)；One-level cylinder includes one-level cylinder body (31), secondary cylinder body
(32) piston rod of one-level cylinder is formed, secondary cylinder body (32) is fixedly arranged at the front end with first stage piston body (35), first stage piston
Pressure sensor (36) is provided with body (35)；Fixes sleeve (30) lower end is fixedly connected with base (14), one-level cylinder body
(31) upper end is fixedly connected with supporting plate.
2. a kind of inside according to claim 1 has the lift car of buffer, it is characterised in that：Pressure sensor
(36) be used for detect pressure medium, pressure sensor (36) is connected with processor module, processor module further with controller
Electrical connection.
3. a kind of inside according to claim 1 has the lift car of buffer, it is characterised in that：Second piston body
(34) the upper piston body and lower piston body being coaxially disposed are included, being arranged with several on upper piston body and lower piston body is used to be situated between
Sealing between the adjacent face of the through hole that matter axially flows, upper piston body and lower piston body coordinates, and medium only passes through upper piston
Each through hole on body and lower piston body, which is realized, comes and goes flowing.
4. a kind of inside according to claim 3 has the lift car of buffer, it is characterised in that：Set in upper piston body
There is the cavity for placing motor, motor is controlled by controller, and the end of its rotor is fixedly connected on lower piston body, for root
The rotation of lower piston body is driven according to pressure medium, to control the relative position relation of each through hole on upper piston body and lower piston body,
And then control rate-of flow.
5. a kind of inside according to claim 1 has the lift car of buffer, it is characterised in that：Second piston body
(34) move reciprocatingly in secondary cylinder body (32), and coordinate with the inwall movable sealing of secondary cylinder body (32).
6. a kind of inside according to claim 1 has the lift car of buffer, it is characterised in that：Under lift car
Portion is additionally provided with external buffer, and external buffer includes the steel plate for being fixed on cage bottom, and steel plate bottom is welded with round steel bushing,
The multiple buffer springs and elastic rubbery body being vertically arranged are provided with round steel bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893022.9A CN107572350B (en) | 2017-09-27 | 2017-09-27 | A kind of inside has the lift car of buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893022.9A CN107572350B (en) | 2017-09-27 | 2017-09-27 | A kind of inside has the lift car of buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107572350A true CN107572350A (en) | 2018-01-12 |
| CN107572350B CN107572350B (en) | 2019-05-17 |
Family
ID=61038870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710893022.9A Expired - Fee Related CN107572350B (en) | 2017-09-27 | 2017-09-27 | A kind of inside has the lift car of buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107572350B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545557A (en) * | 2018-05-30 | 2018-09-18 | 彭祥风 | A kind of intelligent elevator |
| CN108584612A (en) * | 2018-05-09 | 2018-09-28 | 西安理工大学 | A kind of buffer system and its working method for vertical landing elevator |
| CN108584611A (en) * | 2018-05-09 | 2018-09-28 | 西安理工大学 | A kind of buffer system for vertical landing elevator |
| CN108750984A (en) * | 2018-08-14 | 2018-11-06 | 安吉明远锻造有限公司 | A kind of alloy steel forging hanging apparatus |
| CN110566627A (en) * | 2018-06-06 | 2019-12-13 | 安徽瑞华棉业发展股份有限公司 | multidirectional buffer device of textile machinery |
| CN110723622A (en) * | 2019-10-11 | 2020-01-24 | 费吕平 | Elevator car damping device |
| CN113445778A (en) * | 2021-07-15 | 2021-09-28 | 上海上百加电梯工程有限公司 | Leveling device and leveling construction method for outdoor mounted elevator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307176A (en) * | 2013-06-25 | 2013-09-18 | 苏州唐氏机械制造有限公司 | Two-stage buffer capable of realizing uniform buffering of both stages |
| CN204958061U (en) * | 2015-08-15 | 2016-01-13 | 何纪江 | Prevent rocking and prevent elevator that falls |
| CN204980765U (en) * | 2015-09-29 | 2016-01-20 | 山东宏运达电梯股份有限公司 | Safe type elevator car |
| EP3048074A1 (en) * | 2015-01-26 | 2016-07-27 | KONE Corporation | Method of eliminating a jerk arising by accelerating an elevator car |
| CN106365019A (en) * | 2016-11-22 | 2017-02-01 | 郑州诚合信息技术有限公司 | Intelligent shock absorption system of elevator car |
| CN106586784A (en) * | 2016-11-25 | 2017-04-26 | 吴江骏达电梯部件有限公司 | Novel safe lift car for elevator |
| CN206307873U (en) * | 2016-11-02 | 2017-07-07 | 浙江威特电梯有限公司 | A kind of new visitor uses safe buffering lift car |
| CN107128780A (en) * | 2017-05-04 | 2017-09-05 | 苏州廖若机电科技有限公司 | A kind of buffer limit lift car |
-
2017
- 2017-09-27 CN CN201710893022.9A patent/CN107572350B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307176A (en) * | 2013-06-25 | 2013-09-18 | 苏州唐氏机械制造有限公司 | Two-stage buffer capable of realizing uniform buffering of both stages |
| EP3048074A1 (en) * | 2015-01-26 | 2016-07-27 | KONE Corporation | Method of eliminating a jerk arising by accelerating an elevator car |
| CN204958061U (en) * | 2015-08-15 | 2016-01-13 | 何纪江 | Prevent rocking and prevent elevator that falls |
| CN204980765U (en) * | 2015-09-29 | 2016-01-20 | 山东宏运达电梯股份有限公司 | Safe type elevator car |
| CN206307873U (en) * | 2016-11-02 | 2017-07-07 | 浙江威特电梯有限公司 | A kind of new visitor uses safe buffering lift car |
| CN106365019A (en) * | 2016-11-22 | 2017-02-01 | 郑州诚合信息技术有限公司 | Intelligent shock absorption system of elevator car |
| CN106586784A (en) * | 2016-11-25 | 2017-04-26 | 吴江骏达电梯部件有限公司 | Novel safe lift car for elevator |
| CN107128780A (en) * | 2017-05-04 | 2017-09-05 | 苏州廖若机电科技有限公司 | A kind of buffer limit lift car |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108584612A (en) * | 2018-05-09 | 2018-09-28 | 西安理工大学 | A kind of buffer system and its working method for vertical landing elevator |
| CN108584611A (en) * | 2018-05-09 | 2018-09-28 | 西安理工大学 | A kind of buffer system for vertical landing elevator |
| CN108584611B (en) * | 2018-05-09 | 2019-07-23 | 西安理工大学 | A kind of buffer system for vertical landing elevator |
| CN108545557A (en) * | 2018-05-30 | 2018-09-18 | 彭祥风 | A kind of intelligent elevator |
| CN110566627A (en) * | 2018-06-06 | 2019-12-13 | 安徽瑞华棉业发展股份有限公司 | multidirectional buffer device of textile machinery |
| CN108750984A (en) * | 2018-08-14 | 2018-11-06 | 安吉明远锻造有限公司 | A kind of alloy steel forging hanging apparatus |
| CN110723622A (en) * | 2019-10-11 | 2020-01-24 | 费吕平 | Elevator car damping device |
| CN113445778A (en) * | 2021-07-15 | 2021-09-28 | 上海上百加电梯工程有限公司 | Leveling device and leveling construction method for outdoor mounted elevator |
| CN113445778B (en) * | 2021-07-15 | 2022-07-19 | 上海上百加电梯工程有限公司 | Leveling device and leveling construction method for outdoor mounted elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107572350B (en) | 2019-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190422 Address after: Room 106-24, Government Office Building, No. 9, Government Street, Xinchengzi Town, Miyun District, Beijing, 101500 Applicant after: BEIJING KONG BILLION XIN ELEVATOR Co.,Ltd. Address before: 523000 2, 205, innovation and Technology Park, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong, China, 205 Applicant before: DONGGUAN SHENGRONG AUTOMATION TECHNOLOGY Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 106-24, Government Office Building, No. 9, Government Street, Xinchengzi Town, Miyun District, Beijing, 101500 Patentee after: Beijing Tongli Yixin Elevator Technology Co.,Ltd. Address before: Room 106-24, Government Office Building, No. 9, Government Street, Xinchengzi Town, Miyun District, Beijing, 101500 Patentee before: BEIJING KONG BILLION XIN ELEVATOR Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210819 Address after: No. 361, kouzi building, No. 6, Chegongzhuang street, Xicheng District, Beijing 100032 Patentee after: Li Xuemin Address before: Room 106-24, Government Office Building, No. 9, Government Street, Xinchengzi Town, Miyun District, Beijing, 101500 Patentee before: Beijing Tongli Yixin Elevator Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211216 Address after: Room 1103, building 5, yard 36, Majiabao West Road, Fengtai District, Beijing 100071 Patentee after: Beijing Unicom Elevator Co.,Ltd. Address before: No. 361, kouzi building, No. 6, Chegongzhuang street, Xicheng District, Beijing 100032 Patentee before: Li Xuemin |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 |
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| CF01 | Termination of patent right due to non-payment of annual fee |