CN107458939B - A kind of elevator shallow pit stops stop device - Google Patents
A kind of elevator shallow pit stops stop device Download PDFInfo
- Publication number
- CN107458939B CN107458939B CN201710812244.3A CN201710812244A CN107458939B CN 107458939 B CN107458939 B CN 107458939B CN 201710812244 A CN201710812244 A CN 201710812244A CN 107458939 B CN107458939 B CN 107458939B
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- China
- Prior art keywords
- switch
- electric cylinder
- elevator
- stop device
- plate weldment
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B66B5/0043—Devices enhancing safety during maintenance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
-
- 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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a kind of elevator shallow pits to stop stop device, including symmetrically arranged left mechanical linkage and right mechanical linkage, left mechanical linkage includes left vertical fixed plate weldment, and Zuo Shuzhi fixed plate weldment is hinged with a left side by left rotation shaft and horizontally rotates plate weldment；It is provided with left electric cylinder on left vertical fixed plate weldment, left electric cylinder head is hinged with left link block, and left link block horizontally rotates plate weldment with a left side and is fixedly connected；Left vertical fixed plate weldment is equipped with the first left travel switch in left electric cylinder on one side, the back side is provided with the second left travel switch, and a left side, which horizontally rotates, is provided with the first left contact board corresponding with the first left travel switch and the second left travel switch and the second left contact board on plate weldment；Left electric cylinder head is connected with hanging left magnet contactor bracket, and left bistable switch corresponding with left magnet contactor bracket is provided on Zuo Shuzhi fixed plate weldment.Application of the invention increases pit overhaul space, plays a protective role when overhauling downlink.
Description
Technical field
The present invention relates to a kind of elevator technology fields, stop stop device more particularly to a kind of elevator shallow pit.
Background technique
Random expanding economy, elevator is more and more extensive to be applied to people's lives, when elevator breaks down, repairs people
Member needs to work in pit, and therefore, pit needs certain depth, could ensure the safety of maintenance personal and convenient.And currently, by
In various reasons, pit depth cannot reach prescribed requirement, especially for the Lao Lou for being fitted without elevator before some, due to
Resident's age of Lao Lou is increasing, and the demand for installing elevator additional is more and more vigorous, and the construction conditions of Lao Lou are often up to less than control
The requirement of deep pit, it is therefore, how interior in a limited space, increase pit overhaul space when elevator row, is to need to solve at present
Certainly the problem of.
Therefore those skilled in the art are dedicated to developing a kind of elevator shallow pit that can effectively save overhauling elevator space and stop
Stop device.
Summary of the invention
In view of the above drawbacks of the prior art, it can effectively be saved technical problem to be solved by the invention is to provide a kind of
The elevator shallow pit in overhauling elevator space stops stop device.
To achieve the above object, the present invention provides a kind of elevator shallow pits to stop stop device, including symmetrically arranged left machine
Tool linkage and right mechanical linkage, the left mechanical linkage includes left vertical fixed plate weldment, described left vertical
Fixed plate weldment is hinged with a left side by left rotation shaft and horizontally rotates plate weldment；
It is provided with left electric cylinder on the left vertical fixed plate weldment, the left electric cylinder head is hinged with left link block,
The left link block horizontally rotates plate weldment with the left side and is fixedly connected；The left vertical fixed plate weldment is in the left electric cylinder
It is equipped with the first left travel switch on one side, the back side is provided with the second left travel switch, and the left side horizontally rotates to be provided on plate weldment
The first left contact board corresponding with the described first left travel switch and the second left travel switch and the second left contact board；The left electricity
Dynamic cylinder rod head is connected with hanging left magnet contactor bracket, is provided on the left vertical fixed plate weldment and opens with the left magnet
Close the corresponding left bistable switch of bracket；
It further includes uninterruptible power supply that the elevator shallow pit, which stops stop device,；
The uninterruptible power supply output end is in series with elevator key reset switch, contactless contactor, first floor hall door and acts and open
It closes, act limit switch and safety relay；
Wherein the elevator key reset switch, contactless contactor and first floor hall door step switch and toe guard of elevator car act
Switch in parallel；
Wherein the contactless contactor, first floor hall door step switch and movement limit switch and safety relay first are normally opened
Contact shunt；
The first floor hall door step switch and elevator key action switch in parallel；
The uninterruptible power supply output end is in series with the second normally opened contact of safety relay and the time relay；
The uninterruptible power supply output end is in series with safety relay third normally opened contact, the normally opened touching of safety relay the 4th
Point, left electric cylinder act location switch, left electric cylinder, the 5th normally opened contact of safety relay；The wherein safety relay
Four normally opened contacts, left electric cylinder movement location switch and left electric cylinder are in parallel with right electric cylinders movement location switch and right electric cylinder；
The 4th normally opened contact of safety relay, left electric cylinder movement location switch and left electric cylinder and time relay contact switch
With safety alarm parallel connection；
The uninterruptible power supply output end is in series with the first normally-closed contact of safety relay, right electric cylinder, right electric cylinders and resets
Location switch, the second normally-closed contact of safety relay；Wherein the right electric cylinder, right electric cylinders reset location switch and the left electricity
Dynamic cylinder, left electric cylinders reset location switch and safety relay third normally-closed contact is in parallel.
Preferably, the elevator shallow pit, which stops stop device, is connected to overhauling elevator safety return circuit with picking out by access point,
Described access point is in series with limit inferior switch, and the 4th normally-closed contact of safety relay, picks out a little the second limit switch；
Wherein the 4th normally-closed contact of safety relay stops stop device step switch with the right side and left only stop device movement is opened
It is in parallel to close the circuit being composed in series；
Wherein the 4th normally-closed contact of safety relay is switched with urgent power button and the first maintenance uplink button is opened
It is in parallel to close the circuit being composed in series；
Wherein second limit switch and left only stop device reset switch, right only stop device reset switch and carriage spats
It is in parallel that switching plate resets the circuit being composed in series；
Wherein, second limit switch is in parallel with the second maintenance uplink button switch.
Preferably, the contactless contactor is that operation contactor switchs or band-type brake contactor switchs.
Preferably, the first floor hall door step switch can be replaced other floor hall door step switch.
Preferably, the left side, which horizontally rotates, is additionally provided with left buffer on plate weldment.
The beneficial effects of the present invention are: application of the invention increases pit overhaul space, plays when overhauling downlink
Protective effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the invention.
Fig. 2 is the backsight structural representation of Fig. 1.
Fig. 3 is the circuit structure diagram of the embodiment of the invention.
Fig. 4 is the circuit structure diagram that the embodiment of the invention is connected into elevator safety loop.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As shown in Figures 1 to 4, a kind of elevator shallow pit stops stop device, including symmetrically arranged left mechanical linkage and
Right mechanical linkage, left mechanical linkage include left vertical fixed plate weldment 1, and Zuo Shuzhi fixed plate weldment 1 passes through left-hand rotation
Moving axis 4 is hinged with a left side and horizontally rotates plate weldment 2.
It is provided with left electric cylinder 31 on left vertical fixed plate weldment 1, left 31 head of electric cylinder is hinged with left link block 41, left
Link block 41 horizontally rotates plate weldment 2 with a left side and is fixedly connected, and Zuo Shuzhi fixed plate weldment 1 is equipped with first in left 31 one side of electric cylinder
Left travel switch 13, the back side are provided with the second left travel switch 131, and a left side horizontally rotates to be provided with and the first left lateral on plate weldment 2
The left contact board 8 of left travel switch 131 corresponding first of Cheng Kaiguan 13 and second and the second left contact board 9, left 31 head of electric cylinder
It is connected with hanging left magnet contactor bracket 6, is provided on Zuo Shuzhi fixed plate weldment 1 corresponding with left magnet contactor bracket 6
Left bistable switch 11.A left side, which horizontally rotates, is additionally provided with left buffer 10 on plate weldment 2.
It further includes uninterruptible power supply PC-UPS that elevator shallow pit, which stops stop device, and uninterruptible power supply PC-UPS output end is in series with
Elevator key reset switch SAF1, contactless contactor KMY, first floor hall door step switch SAS1, movement limit switch SSAQ and peace
All relay KA, wherein contactless contactor KMY is that operation contactor switchs or band-type brake contactor switchs.
Wherein elevator key reset switch SAF1, contactless contactor KMY and first floor hall door step switch SAS1 and carriage are protected
Sole step switch SSH1 is in parallel.
Wherein contactless contactor KMY, first floor hall door step switch SAS1 and movement limit switch SSAQ and safety relay
First normally opened contact KA1 is in parallel, and first floor hall door step switch SAS1 can be replaced other floor hall door step switch.
First floor hall door step switch SAS1 is in parallel with elevator key action switch SAF2.
Uninterruptible power supply PC-UPS output end is in series with safety relay the second normally opened contact KA2 and time relay KT.
Uninterruptible power supply PC-UPS output end is one end opposite with access power supply.
Uninterruptible power supply PC-UPS output end is in series with safety relay third normally opened contact KA3, safety relay the 4th
Normally opened contact KA4, left electric cylinder act location switch SLZD, left electric cylinder 31, the 5th normally opened contact KA5 of safety relay.Its
Middle the 4th normally opened contact KA4 of safety relay, left electric cylinder movement location switch SLZD and left electric cylinder 31 and right electric cylinders act
Location switch ZLYD and right electric cylinder 32 are in parallel.The 4th normally opened contact KA4 of safety relay, left electric cylinder act location switch
SLZD and left electric cylinder 31 are in parallel with time relay contact switch DT and safety alarm HAJ.
Uninterruptible power supply PC-UPS output end is in series with the first normally-closed contact of safety relay KA6, right electric cylinder 32, right electricity
Cylinder resets location switch SLYF, the second normally-closed contact of safety relay KA7；Wherein right electric cylinder 32, the reset of right electric cylinders are opened in place
It is in parallel with left electric cylinder 31, left electric cylinders reset location switch SLZF and safety relay third normally-closed contact KA8 to close SLYF.
Elevator shallow pit stops stop device and is connected to overhauling elevator safety return circuit, access point A string with point B is picked out by access point A
It is associated with limit inferior switch SLDL, the 4th normally-closed contact KA9 of safety relay, the second limit switch SLDT1, picks out point B.
Wherein the 4th normally-closed contact KA9 of safety relay and right only stop device step switch SSZ1 and left only stop device movement
The circuit that switch SSZ2 is composed in series is in parallel.
The wherein maintenance of the 4th normally-closed contact KA9 of safety relay and urgent power button switch SBG and first uplink button
The circuit that switch SBPU1 is composed in series is in parallel.
Wherein the second limit switch SLDT1 and left only stop device reset switch SSF2, right only stop device reset switch SSF1
The circuit being composed in series with toe guard of elevator car reset switch SSH2 is in parallel.
Wherein, the second limit switch SLDT1 is in parallel with the second maintenance uplink button switch SBPU2.
The mountable left and right sides in elevator shaft pit car position of the present invention, is installed on lift car track.This
Invention is that trigger device drives safety relay KA movement, and safety relay KA controls left electric cylinder 31 and right electric cylinder 32 is flexible
Movement, horizontally rotates plate weldment 2, left buffer 10, does 90 degree of rotations along left rotation shaft 4, the right side horizontally rotates plate to control a left side
Weldment (not shown) and right buffer (not shown), increase pit overhaul space when overhauling elevator downlink, play guarantor
Shield effect.
Concrete operating principle is to act limit switch SSAQ, not operating in the conductive state in home, elevator is not transported
Row, contactless contactor KMY are in release conditions, the normally closed point conducting of contactless contactor KMY.Only need the foldable toeguard of lift car
Movement, i.e. toe guard of elevator car step switch SSH1 are connected, toe guard of elevator car step switch SSH1 opened point closure or elevator key
Step switch SAF2 opened point movement conducting or first floor hall door step switch SAS1 (or other layers of hall door step switch) opened point
Movement conducting, safety relay (KA) movement.
When safety relay KA is acted, all opened points conducting of safety relay KA, normally closed point discharges, at this time uninterruptedly
Power supply PC-UPS to the left power by electric cylinder 31 and left electric cylinder 32, and left electric cylinder 31 and left electric cylinder 32 are shunk, and a left side horizontally rotates
Plate weldment 2, the right rotation axis for horizontally rotating plate weldment and corresponding buffer along respective phase side make 90 degree of rotations, set when reaching
Left electric cylinder movement location switch SLZD and the movement location switch ZLYD movement of right electric cylinders when position, left electric cylinder 31 and a left side are electronic
32 stopping of cylinder movement, is maintained at 90 degree and stops off-position and set.
Meanwhile when safety relay KA is acted, safety relay KA opened point conducting, time relay KT obtains electric timing,
Safety alarm HAJ obtains electric alarm, and it can also be alarm bell or alarm lamp that safety alarm HAJ, which can be sound-light alarm,.When by setting
Definite value time relay KT delay disconnects, warning device HAJ power loss stop alarm.
When safety relay KA is acted, the normally closed point of safety relay KA is disconnected, and is cut off elevator normal operation signal, is pacified at this time
The conducting of all relay KA opened point, elevator can be into maintenance uplink and downlink operations after turning inspection travel.If safety relay is failure to actuate,
Elevator, which turns maintenance, can not then carry out inspection travel.
As shown in figure 4, (present invention is not operating, and safety relay is also not operating, at toe guard of elevator car when elevator operates normally
In retrieving position), the normally closed point conducting of safety relay KA at this time, stop device reset switch SSF2 is stopped on a left side and the right stop device that stops resets
Switch SSF1 conducting, toe guard of elevator car reset switch SSH2, that is, normally closed point conducting.At this point, safety return circuit of the invention are as follows: access
--- limit inferior switch SLDL --- the 4th normally-closed contact KA9 of safety relay --- is left to stop stop device reset switch to point A
SSF2 --- stops stop device reset switch SSF1 --- toe guard of elevator car reset switch SSH2 --- and picks out point B, then seal in electricity in the right side
Terraced safety return circuit, elevator safety loop connection, elevator can operate normally.
(present invention movement, safety relay KA are attracted, and toe guard of elevator car is in withdrawal/act bit when overhauling elevator is run
Set), the normally closed point of safety relay KA disconnects at this time, and when the present invention acts in place, stop device step switch SSZ1 is stopped on the right side and a left side is stopped
Stop device step switch SSZ2 conducting, stop device reset switch SSF2 is stopped on a left side and the right stop device reset switch SSF1 that stops is disconnected, the
Two limit switch SLDT1 are reinstated.Safety return circuit of the invention at this time are as follows: access point A --- limit inferior switch SLDL --- stops on the right side
Stop device step switch SSZ1 --- left side stops stop device step switch SSZ2 --- the second limit switch SLDT1 --- and picks out point B,
Elevator safety loop is sealed in, elevator safety loop connection, elevator can inspection travel；When maintenance goes downwards to the second limit switch
SLDT1, elevator stop downwards, and elevator can only be run up by the second maintenance upstream switch SBPU2 maintenance to being detached from the at this time
Two limit switch SLDT1.
(if the present invention is not operating, safety relay KA is attracted, and toe guard of elevator car, which is in, to be withdrawn/move when overhauling elevator operation
Make position), the normally closed point of safety relay KA disconnects at this time, and because the present invention is not operating in place, stop device step switch SSZ1 is stopped on the right side
Stop stop device step switch SSZ2 with a left side to disconnect, at this time only by promptly connecting in the maintenance of power button switch SBG and second
Row button switch SBPU2, promptly runs up, and downlink is invalid, to ensure maintenance safety.
First maintenance uplink button switch SBPU1 and the second maintenance uplink button switch SBPU2 is maintenance uplink button
Auxiliary contact.
Above reset switch refers to that the normally closed point to inductive switch, step switch are the opened point to inductive switch.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (5)
1. a kind of elevator shallow pit stops stop device, it is characterized in that: including symmetrically arranged left mechanical linkage and right mechanical connection
Dynamic device, the left mechanical linkage include left vertical fixed plate weldment (1), and the left vertical fixed plate weldment (1) passes through
Left rotation shaft (4) is hinged with a left side and horizontally rotates plate weldment (2)；
It is provided with left electric cylinder (31) on the left vertical fixed plate weldment (1), left electric cylinder (31) head is hinged with a left side
Link block (41), the left link block (41) horizontally rotate plate weldment (2) with the left side and are fixedly connected；The vertical fixed plate in a left side
Weldment (1) is equipped with the first left travel switch (13) in the left electric cylinder (31) on one side, and the back side is provided with the second left travel switch
(131), the left side horizontally rotates is provided with and the described first left travel switch (13) and the second left travel switch on plate weldment (2)
(131) the corresponding first left contact board (8) and the second left contact board (9)；Left electric cylinder (31) head is connected with hanging
Left magnet contactor bracket (6) is provided on the left vertical fixed plate weldment (1) corresponding with left magnet contactor bracket (6)
Left bistable switch (11)；
It further includes uninterruptible power supply (PC-UPS) that the elevator shallow pit, which stops stop device,；
Uninterruptible power supply (PC-UPS) output end be in series with elevator key reset switch (SAF1), contactless contactor (KMY),
First floor hall door step switch (SAS1), movement limit switch (SSAQ) and safety relay (KA)；
Wherein the elevator key reset switch (SAF1), contactless contactor (KMY) and first floor hall door step switch (SAS1) with
Toe guard of elevator car step switch (SSH1) is in parallel；
The wherein contactless contactor (KMY), first floor hall door step switch (SAS1) and movement limit switch (SSAQ) and safety
The first normally opened contact of relay (KA1) is in parallel；
The first floor hall door step switch (SAS1) is in parallel with elevator key action switch (SAF2)；
Uninterruptible power supply (PC-UPS) output end is in series with the second normally opened contact of safety relay (KA2) and the time relay
(KT)；
Uninterruptible power supply (PC-UPS) output end is in series with safety relay third normally opened contact (KA3), safety relay
4th normally opened contact (KA4), left electric cylinder movement location switch (SLZD), left electric cylinder (31), safety relay the 5th are normally opened
Contact (KA5)；Wherein the 4th normally opened contact (KA4) of safety relay, left electric cylinder movement location switch (SLZD) and a left side
Electric cylinder (31) is in parallel with right electric cylinders movement location switch (ZLYD) and right electric cylinder (32)；The safety relay the 4th is normally opened
Contact (KA4), left electric cylinder movement location switch (SLZD) and left electric cylinder (31) and time relay contact switch (DT) and
Safety alarm (HAJ) is in parallel；
Uninterruptible power supply (PC-UPS) output end is in series with the first normally-closed contact of safety relay (KA6), right electric cylinder
(32), right electric cylinders reset location switch (SLYF), the second normally-closed contact of safety relay (KA7)；The wherein right electric cylinder
(32), right electric cylinders reset location switch (SLYF) and the left electric cylinder (31), left electric cylinders reset location switch (SLZF) and pacify
All relay third normally-closed contact (KA8) is in parallel.
2. elevator shallow pit as described in claim 1 stops stop device, pass through it is characterized in that: the elevator shallow pit stops stop device
Access point (A) is connected to overhauling elevator safety return circuit with point (B) is picked out, and described access point (A) is in series with limit inferior switch (SLDL),
The 4th normally-closed contact (KA9) of safety relay, picks out point (B) at the second limit switch (SLDT1)；
Wherein the 4th normally-closed contact (KA9) of safety relay and right only stop device step switch (SSZ1) and left only stop device
The circuit that step switch (SSZ2) is composed in series is in parallel；
Wherein the 4th normally-closed contact (KA9) of safety relay and urgent power button switch (SBG) and the first maintenance uplink
The circuit that button switch (SBPU1) is composed in series is in parallel；
Wherein second limit switch (SLDT1) and left only stop device reset switch (SSF2), right only stop device reset switch
(SSF1) and the circuit that is composed in series of toe guard of elevator car reset switch (SSH2) is in parallel；
Wherein, second limit switch (SLDT1) is in parallel with the second maintenance uplink button switch (SBPU2).
3. elevator shallow pit as described in claim 1 stops stop device, it is characterized in that: the contactless contactor (KMY) is operation
Contactless contactor or band-type brake contactor switch.
4. elevator shallow pit as described in claim 1 stops stop device, it is characterized in that: the first floor hall door step switch (SAS1)
It can be replaced other floor hall door step switch.
5. elevator shallow pit as described in claim 1 stops stop device, it is characterized in that: the left side horizontally rotates on plate weldment (2)
It is additionally provided with left buffer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812244.3A CN107458939B (en) | 2017-09-11 | 2017-09-11 | A kind of elevator shallow pit stops stop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812244.3A CN107458939B (en) | 2017-09-11 | 2017-09-11 | A kind of elevator shallow pit stops stop device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107458939A CN107458939A (en) | 2017-12-12 |
| CN107458939B true CN107458939B (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710812244.3A Active CN107458939B (en) | 2017-09-11 | 2017-09-11 | A kind of elevator shallow pit stops stop device |
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| CN (1) | CN107458939B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108726301B (en) * | 2018-06-27 | 2020-06-05 | 陈少洋 | Shallow pit elevator |
| CN109019273A (en) * | 2018-09-28 | 2018-12-18 | 山东富士制御电梯有限公司 | A kind of shallow pit folding toeguard structure |
| CN109650203B (en) * | 2019-01-02 | 2024-03-15 | 杭州优迈科技有限公司 | Shallow pit installs elevator additional and electrical system thereof |
| CN112061914B (en) * | 2019-06-10 | 2022-04-12 | 上海三菱电梯有限公司 | Elevator safety loop detection system |
| CN112850411B (en) * | 2021-03-08 | 2024-08-13 | 浙江梅轮电梯股份有限公司 | Pit scram switch safety device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356288A (en) * | 2001-05-31 | 2002-12-10 | Toshiba Elevator Co Ltd | Elevator apparatus |
| CN104340806A (en) * | 2013-07-26 | 2015-02-11 | 上海席尔诺电梯有限公司 | Shallow pit elevator overhauling safety device |
| CN205023651U (en) * | 2015-08-25 | 2016-02-10 | 湖南德力通电梯有限公司 | Perpendicular elevator of shallow pit and device only stops thereof |
| CN205204577U (en) * | 2015-12-21 | 2016-05-04 | 湖南奥莎电梯集团股份有限公司 | Shallow for pit elevator sedan -chair frame of underloading type |
| CN205892400U (en) * | 2016-08-20 | 2017-01-18 | 山东富士制御电梯有限公司 | Overhaul anti -falling device at bottom of home use elevator sedan -chair |
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