CN108002203A - A kind of application method of handrail cleaning device - Google Patents
A kind of application method of handrail cleaning device Download PDFInfo
- Publication number
- CN108002203A CN108002203A CN201810081777.3A CN201810081777A CN108002203A CN 108002203 A CN108002203 A CN 108002203A CN 201810081777 A CN201810081777 A CN 201810081777A CN 108002203 A CN108002203 A CN 108002203A
- Authority
- CN
- China
- Prior art keywords
- handrail
- component
- cleaning
- base plate
- limiting cover
- Prior art date
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B31/00—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning
- B66B31/02—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning for handrails
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B31/00—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning
- B66B31/003—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning for cleaning steps or pallets
Landscapes
- Escalators And Moving Walkways (AREA)
Abstract
The present invention provides a kind of application method of handrail cleaning device, the method is：Step S1：Staff holds cleaning device, position-limiting cover is laterally covered on the handrail of escalator, ensuring to clean under component is in contact with handrail upper surface, the first brush filament is in contact with handrail grooves on two sides, at the same rotating rotary rods by four sucker suctions in position-limiting cover on the steel plate below escalator；Step S2：Under handrail operation, component, the first brush filament and handrail phase mutual friction are cleaned, so cleans component, the first brush filament cleans handrail；Step S3：Starting dust catcher, the dust that dust catcher starts to clean handrail generation absorbs, in case dust is to ambient contamination.The present invention helps to improve cleaning efficiency and cleaning performance, the problems such as reducing security risk, has a vast market prospect.
Description
Technical field
The present invention relates to special equipment cleaning technique field, particularly a kind of application method of handrail cleaning device.
Background technology
Escalator is all widely used with megastore in public places at present, and the flow of the people in these places is big, from
The utilization rate of dynamic staircase is high, and automatic staircase handrail band is easy to dirty, needs repeatedly clean handrail daily, and automatic at present
Staircase degree is all that manually escalator handrail is cleaned using rag using manually cleaning, cleaning when, this artificial wiping
Wash on the one hand clean efficiency it is low, method is single, ineffective；Escalator is operating status when on the other hand cleaning, and keep a public place clean people
When cleaning, there are security risk, the incident of injury easily occurs for member.
The content of the invention
In order to overcome the problems referred above, the object of the present invention is to provide a kind of application method of handrail cleaning device, improve
The service efficiency of handrail cleaning device.
The present invention is realized using following scheme：A kind of application method of handrail cleaning device, the handrail sanitizer cartridge
Put including a cleaning device and a storage device, the cleaning device include one be used for laterally be buckled on escalator handrail
Position-limiting cover, the right side wall of the position-limiting cover are provided outside turbine and worm, and the worm screw rear end of the turbine and worm is connected with a steering
Disk, the turbine of the turbine and worm are connected with a shaft, left side wall of the shaft through the right side wall and the position-limiting cover
Connection, the shaft are freely rotated in the position-limiting cover, and a directive wheel is provided with the middle part of the shaft, and the shaft drives institute
Directive wheel rotation is stated, the guiding wheel surface is provided with first foundation plate, the second base plate and the 3rd base plate, second base
Plinth plate and the 3rd base plate are hollow cavity, and the outer surface of second base plate and the 3rd base plate is both provided with multiple
Through hole, the outer surface of the first foundation plate are provided with a cleaning component, and the outer surface of second base plate is provided with a wiping
Component is washed, the outer surface of the 3rd base plate is provided with one and dries component, and the left side wall top of the position-limiting cover offers one
Opening, the left and right sides wall lower part of the position-limiting cover offers a suction inlet；
The storage device includes water tank, water tank and dust catcher, and suction pump is provided with the water tank, described to draw water
Pump is connected with the first pipeline, and first pipeline has enough length in reserve, and first pipeline is connected to through the opening
The hollow cavity of second base plate, the water in the water tank are pumped into the hollow of the second base plate through suction pump through the first pipeline
Cavity, water are penetrated on the scouring component from through hole；Pulsating pump is provided with the water tank, the pulsating pump is connected with
Two pipelines, the second pipe have enough length in reserve, and the second pipe is connected to the 3rd base plate through the opening
Hollow cavity, the pulsating pump by dry component absorption water via through holes pump the hollow cavity into the 3rd base plate, by
Second pipe and pulsating pump enter in water tank；The dust catcher is connected with the 3rd pipeline, and the 3rd pipeline is connected with first
It is in charge of and is in charge of with second, described first is in charge of the suction inlet for the left side wall for connecting the position-limiting cover, and described second is in charge of connection institute
State the suction inlet of the right side wall of position-limiting cover；The left and right sides wall of the position-limiting cover is respectively arranged with two screw rods, and two screw rods
The side wall of position-limiting cover is threaded through, one end of the screw rod is provided with swingle, and the other end of screw rod is provided with a sucker, and institute
State sucker to be located in the position-limiting cover, the first multiple brush filaments is horizontally arranged with the two side of the position-limiting cover；
The application method is specially：
Step S1：Staff holds cleaning device, and position-limiting cover is laterally covered on the handrail of escalator, is ensuring to clean
Component is in contact with handrail upper surface, the first brush filament is in contact down with handrail grooves on two sides, while rotating rotary rods will limit
Four sucker suctions in the cover of position are on the steel plate below escalator；
Step S2：Under handrail operation, component, the first brush filament and handrail phase mutual friction are cleaned, so cleans component, first
Brush filament cleans handrail；
Step S3:Starting dust catcher, the dust that dust catcher starts to clean handrail generation absorbs, in case dust is to surrounding
Environmental pollution；
Step S4：Before cleaning component and handrail cleaning is terminated, first start suction pump, the water in water tank is pumped into second
In the hollow cavity of base plate, water is sufficiently humidified so as to by through hole to cleaning component；
Step S5：After cleaning, steering wheel is rotated, steering wheel drives worm screw, and worm screw drives turbine, and turbine drives shaft,
Shaft drives directive wheel, will clean component and changes to handrail, handrail contacts with each other friction, i.e. scouring group with cleaning component
Part starts to clean handrail；
Step S6：After work is cleaned, suction pump is closed, rotates steering wheel, steering wheel drives worm screw, and worm screw drives whirlpool
Wheel, turbine drive shaft, and shaft drives directive wheel, will dry component and change to handrail, handrail is mutual with drying component
Contact friction, that is, dry component and start to dry handrail；
Step S7：Start pulsating pump, the water for drying component absorption is passed through by the 3rd basis of through hole suction by the suction of pulsating pump
The hollow cavity of plate, then by second pipe by Water Sproading to water tank；
Step S8：Dry after component dries moisture to handrail, that is, complete the cleaning to handrail, close pulsating pump and suction
Dirt device, rotating rotary rods unload sucker from steel plate, you can remove cleaning device；Component will be cleaned and be rotated back to original position, i.e.,
Cleaning can be carried out to next handrail.
Further, the width of the directive wheel is 80 ~ 100mm.
Further, the scouring component is water-absorbing sponge.
Further, the component of drying is water-absorbing sponge.
Further, the cleaning component is the second brush filament.
Further, the suction inlet is horn-like for flat.
Further, the turbine and worm is provided outside protective shell.
The beneficial effects of the present invention are：The present apparatus need to be only fixedly mounted on handrail, stood always without staff
By handrail, worker safety's hidden danger is effectively reduced；The present apparatus cleans component, cleans component and dries group by setting
Part, effectively improves handrail cleaning efficiency and effect, has a vast market prospect.
Brief description of the drawings
Fig. 1 is the method flow schematic diagram of the present invention.
Fig. 2 is the structure diagram of the present invention.
Fig. 3 is the cleaning device A directional profile figures of the present invention.
Fig. 4 is the embodiment of the present invention figure.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
A kind of application method of shown, of the invention handrail cleaning device is please referred to Fig.1 to Fig.3, the handrail is clear
Clean device includes a cleaning device 1 and a storage device 2, the cleaning device 1 include one be used for laterally be buckled in escalator
Position-limiting cover 3 on handrail, the right side wall 31 of the position-limiting cover 3 are provided outside turbine and worm 4, the worm screw 41 of the turbine and worm 4
Rear end is connected with a steering wheel 42, and the turbine 43 of the turbine and worm 4 is connected with a shaft 5, and the shaft 5 passes through the right side
Wall 31 is connected with the left side wall 32 of the position-limiting cover 3, and the shaft 5 is freely rotated in the position-limiting cover 3, in the shaft 5
Portion is provided with a directive wheel 6, and the shaft 5 drives the directive wheel 6 to rotate, and 6 surface of directive wheel is provided with first foundation
Plate 61, the second base plate 62 and the 3rd base plate 63（I.e. first foundation plate 61, the second base plate 62 and the 3rd base plate 63 are formed
Circumference is arranged）, 62 and the 3rd base plate 63 of the second base plate is hollow cavity, 62 and the 3rd base of the second base plate
The outer surface of plinth plate 63 is both provided with multiple through holes（It is not shown）, the outer surface of the first foundation plate 61 is provided with a cleaning
Component 64, the outer surface of second base plate 62 are provided with a scouring component 65, and the outer surface of the 3rd base plate 63 is set
It is equipped with one and dries component 66,32 top of left side wall of the position-limiting cover 3 offers an opening 33, the left and right two of the position-limiting cover 3
Lower sidewall offers a suction inlet 34；
The storage device 2 includes water tank 21, water tank 22 and dust catcher 23, and suction pump is provided with the water tank 22
7, the suction pump 7 is connected with the first pipeline 71, and first pipeline 71 has enough length in reserve, and first pipeline 71 is worn
Cross the hollow cavity that the opening 33 is connected to the second base plate 62, the water in the water tank 21 is through suction pump 7 through the first pipe
The hollow cavity into the second base plate 62 is pumped in road 71, and water is penetrated on the scouring component 65 from through hole；The water tank 22
On be provided with pulsating pump 8, the pulsating pump 8 is connected with second pipe 81, and the second pipe 81 has enough length in reserve, institute
The hollow cavity that second pipe 81 is connected to the 3rd base plate 63 through the opening 33 is stated, the pulsating pump 8 will dry component
The 66 water via through holes absorbed pump the hollow cavity into the 3rd base plate 63, enter water storage by second pipe 81 and pulsating pump 8
In tank 22；The dust catcher 23 is connected with the 3rd pipeline 231, and the 3rd pipeline 231 is connected with first and is in charge of 232 and second point
Pipe 233, described first is in charge of the suction inlet 34 of the left side wall 32 of the 232 connections position-limiting cover 3, and described second is in charge of 233 connections
The suction inlet 34 of the right side wall 31 of the position-limiting cover 3；The left and right sides wall of the position-limiting cover 3 is respectively arranged with two screw rods 35,
And two screw rods 35 are threaded through the side wall of position-limiting cover 3, one end of the screw rod 35 is provided with swingle 36, screw rod 35 it is another
End is provided with a sucker 37, and the sucker 37 is located in the position-limiting cover 3, is laterally set in the two side of the position-limiting cover 3
It is equipped with the first multiple brush filaments 38；
The application method is specially：
Step S1：Staff holds cleaning device 1, and position-limiting cover 3 is laterally covered on the handrail of escalator, is being ensured clearly
Sweep that component 64 is in contact with handrail upper surface, the first brush filament 38 is in contact down with handrail grooves on two sides, while rotates rotation
Bar 36 adsorbs four suckers 37 in position-limiting cover on the steel plate below escalator；
Step S2：Under handrail operation, component 64, the first brush filament 38 and handrail phase mutual friction are cleaned, so cleans component
64th, the first brush filament 37 cleans handrail；
Step S3:Starting dust catcher 23, the dust that dust catcher 23 starts to clean handrail generation absorbs, in order to avoid dust pair
Ambient contamination；
Step S4：Before cleaning component 64 and handrail cleaning is terminated, first start suction pump 7, the water in water tank 21 is pumped
Into in the hollow cavity of the second base plate 62, water is sufficiently humidified so as to by through hole to cleaning component 65；
Step S5：After cleaning, steering wheel 42 is rotated, steering wheel 42 drives worm screw 41, and worm screw 41 drives turbine 43, turbine
43 drive shaft 5, and shaft 5 drives directive wheel 6, will clean component 65 and change to handrail, handrail is with cleaning 65 phase of component
Mutual connection touches wiping, that is, cleans component 65 and start to clean handrail；
Step S6：After work is cleaned, suction pump 7 is closed, rotates steering wheel 42, steering wheel 42 drives worm screw 41, worm screw
41 drive turbine 43, and turbine 43 drives shaft 5, and shaft 5 drives directive wheel 6, will dry component 66 and change to handrail, handrail
Band contacts with each other friction with drying component 66, that is, dries component 66 and start to dry handrail；
Step S7：Start pulsating pump 8, through hole suction the 3rd is passed through by the water that component 66 absorbs is dried by the suction of pulsating pump 8
The hollow cavity of base plate 63, then by second pipe 81 by Water Sproading to water tank 22；
Step S8：Dry after component 66 dries moisture to handrail, that is, complete the cleaning to handrail, close pulsating pump 8
With dust catcher 23, rotating rotary rods 36 unload sucker 37 from steel plate, you can remove cleaning device 1；Component 64 will be cleaned to revolve
Rotate back into original position, you can cleaning is carried out to next handrail.
In the present embodiment, the width of the directive wheel is 80 ~ 100mm, for example, 80,85,90,95,100mm, do not have here
Body explanation；The scouring component is water-absorbing sponge；The component of drying is water-absorbing sponge；The cleaning component is the second brush filament；
The suction inlet is horn-like for flat；The turbine and worm is provided outside protective shell；In practical application, the width of selective guide wheel
More than the width of handrail, it can also be palm fiber to clean component, and it can also be rag to clean component, and suction inlet can also be circle
It is horn-like etc..
The operation principle of the present invention is as follows：
The present invention is laterally covered on position-limiting cover on the handrail of escalator by staff, and ensures directive wheel and handrail
Be in contact, then by swingle by four sucker suctions in position-limiting cover on the steel plate of bulwark ladder, this sampling device just can fix
On handrail；Start dust catcher, so clean the dust taken up when component cleans handrail and be in charge of through first
Be in charge of with second, the 3rd pipeline is siphoned away by dust catcher, surrounding environment is not polluted；When cleaning up first few minutes, such as
5th, 6,7,8 minutes, do not illustrate here, start suction pump, the water in water tank is taken out through the first pipeline into the second base
In the hollow cavity of plinth plate, water is permeated to component is cleaned by through hole, scouring component is soaked completely, and the first pipeline has
Enough length in reserve, such staff rotate steering wheel and drive turbine and worm, and turbine drives shaft, and shaft drives directive wheel
Component will be cleaned to go on handrail, handrail is cleaned so as to clean component；After scouring, suction pump is closed,
Staff rotates steering wheel and drives turbine and worm, and turbine drives shaft, and second pipe also has enough length in reserve, and shaft is complete
Directive wheel can be driven to dry component entirely to go on handrail, when wait dries component and absorbs water fast saturation, start pulsating pump,
The water via through holes for so drying component absorption suck the hollow cavity of the 3rd base plate, then are flowed into through second pipe in water tank.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (8)
- A kind of 1. application method of handrail cleaning device, it is characterised in that：The handrail cleaning device includes a cleaning and fills Put with a storage device, the cleaning device include one be used for laterally be buckled in position-limiting cover on escalator handrail, the limit The right side wall of position cover is provided outside turbine and worm, and the worm screw rear end of the turbine and worm is connected with a steering wheel, the turbine snail The turbine of bar is connected with a shaft, and the shaft is connected through the right side wall with the left side wall of the position-limiting cover, the shaft It is freely rotated in the position-limiting cover, a directive wheel is provided with the middle part of the shaft, the shaft drives the directive wheel to rotate, The guiding wheel surface is surrounded with first foundation plate, the second base plate and the 3rd base plate, second base plate successively It is hollow cavity with the 3rd base plate, the outer surface of second base plate and the 3rd base plate is both provided with multiple lead to Hole, the outer surface of the first foundation plate are provided with a cleaning component, and the outer surface of second base plate is provided with a scouring Component, the outer surface of the 3rd base plate are provided with one and dry component, and the left side wall top of the position-limiting cover offers one and opens Mouthful, the left and right sides wall lower part of the position-limiting cover offers a suction inlet；The storage device includes water tank, water tank and dust catcher, and suction pump is provided with the water tank, described to draw water Pump is connected with the first pipeline, and first pipeline is connected to the hollow cavity of the second base plate, the water storage through described be open Water in tank pumps the hollow cavity into the second base plate through suction pump through the first pipeline, and water penetrates into the scouring group from through hole On part；Pulsating pump is provided with the water tank, the pulsating pump is connected with second pipe, and the second pipe is opened through described Mouth is connected to the hollow cavity of the 3rd base plate, and the pulsating pump pumps the water via through holes for drying component absorption into the 3rd basis The hollow cavity of plate, enters in water tank by second pipe and pulsating pump；The dust catcher is connected with the 3rd pipeline, and described Three pipelines, which are connected with first, to be in charge of and is in charge of with second, and described first is in charge of the suction inlet for the left side wall for connecting the position-limiting cover, institute State the second suction inlet for being in charge of the right side wall for connecting the position-limiting cover；The left and right sides wall of the position-limiting cover is respectively arranged with two Screw rod, and two screw spirals pass through the side wall of position-limiting cover, one end of the screw rod is provided with swingle, and the other end of screw rod is set A sucker is equipped with, and the sucker is located in the position-limiting cover, is horizontally arranged with the two side of the position-limiting cover multiple First brush filament；The application method is specially：Step S1：Staff holds cleaning device, and position-limiting cover is laterally covered on the handrail of escalator, is ensuring to clean Component is in contact with handrail upper surface, the first brush filament is in contact down with handrail grooves on two sides, while rotating rotary rods will limit Four sucker suctions in the cover of position are on the steel plate below escalator；Step S2：Under handrail operation, component, the first brush filament and handrail phase mutual friction are cleaned, so cleans component, first Brush filament cleans handrail；Step S3:Starting dust catcher, the dust that dust catcher starts to clean handrail generation absorbs, in case dust is to surrounding Environmental pollution；Step S4：Before cleaning component and handrail cleaning is terminated, first start suction pump, the water in water tank is pumped into second In the hollow cavity of base plate, water is sufficiently humidified so as to by through hole to cleaning component；Step S5：After cleaning, steering wheel is rotated, steering wheel drives worm screw, and worm screw drives turbine, and turbine drives shaft, Shaft drives directive wheel, will clean component and changes to handrail, handrail contacts with each other friction, i.e. scouring group with cleaning component Part starts to clean handrail；Step S6：After work is cleaned, suction pump is closed, rotates steering wheel, steering wheel drives worm screw, and worm screw drives whirlpool Wheel, turbine drive shaft, and shaft drives directive wheel, will dry component and change to handrail, handrail is mutual with drying component Contact friction, that is, dry component and start to dry handrail；Step S7：Start pulsating pump, the water for drying component absorption is passed through by the 3rd basis of through hole suction by the suction of pulsating pump The hollow cavity of plate, then by second pipe by Water Sproading to water tank；Step S8：Dry after component dries moisture to handrail, that is, complete the cleaning to handrail, close pulsating pump and suction Dirt device, rotating rotary rods unload sucker from steel plate, you can remove cleaning device；Component will be cleaned and be rotated back to original position, i.e., Cleaning can be carried out to next handrail.
- A kind of 2. application method of handrail cleaning device according to claim 1, it is characterised in that：The width of the directive wheel Spend for 80 ~ 100mm.
- A kind of 3. application method of handrail cleaning device according to claim 1, it is characterised in that：It is described scouring component be Water-absorbing sponge.
- A kind of 4. application method of handrail cleaning device according to claim 1, it is characterised in that：The component of drying is Water-absorbing sponge.
- A kind of 5. application method of handrail cleaning device according to claim 1, it is characterised in that：It is described cleaning component be Second brush filament.
- A kind of 6. application method of handrail cleaning device according to claim 1, it is characterised in that：The suction inlet is flat Shape is horn-like.
- A kind of 7. application method of handrail cleaning device according to claim 1, it is characterised in that：First pipeline and Second pipe is hose.
- A kind of 8. application method of handrail cleaning device according to claim 1, it is characterised in that：Outside the turbine and worm It is provided with protective shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081777.3A CN108002203B (en) | 2018-01-29 | 2018-01-29 | A kind of application method of handrail cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081777.3A CN108002203B (en) | 2018-01-29 | 2018-01-29 | A kind of application method of handrail cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108002203A true CN108002203A (en) | 2018-05-08 |
| CN108002203B CN108002203B (en) | 2019-04-16 |
Family
ID=62066464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810081777.3A Active CN108002203B (en) | 2018-01-29 | 2018-01-29 | A kind of application method of handrail cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108002203B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500999A (en) * | 2018-06-19 | 2018-09-07 | 羊远 | A kind of elevator automatic hand rail band cleaning robot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997037925A1 (en) * | 1996-04-09 | 1997-10-16 | Jentje Johanna Van Veen | Cleaning device for a handrail belt |
| JP2001072373A (en) * | 1999-09-03 | 2001-03-21 | Hitachi Building Systems Co Ltd | Cleaning device for passenger conveyor handrail |
| CN203767827U (en) * | 2013-12-31 | 2014-08-13 | 杭州斯沃德电梯有限公司 | Hand strap cleaning device for automatic escalator |
| CN106429778A (en) * | 2016-12-07 | 2017-02-22 | 郑州特别有效营销管理咨询有限公司 | Modernized device for cleaning elevator handrail belts |
| CN107253660A (en) * | 2017-07-17 | 2017-10-17 | 李耀强 | A kind of Clean- brush of escalator handrail |
-
2018
- 2018-01-29 CN CN201810081777.3A patent/CN108002203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997037925A1 (en) * | 1996-04-09 | 1997-10-16 | Jentje Johanna Van Veen | Cleaning device for a handrail belt |
| JP2001072373A (en) * | 1999-09-03 | 2001-03-21 | Hitachi Building Systems Co Ltd | Cleaning device for passenger conveyor handrail |
| CN203767827U (en) * | 2013-12-31 | 2014-08-13 | 杭州斯沃德电梯有限公司 | Hand strap cleaning device for automatic escalator |
| CN106429778A (en) * | 2016-12-07 | 2017-02-22 | 郑州特别有效营销管理咨询有限公司 | Modernized device for cleaning elevator handrail belts |
| CN107253660A (en) * | 2017-07-17 | 2017-10-17 | 李耀强 | A kind of Clean- brush of escalator handrail |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500999A (en) * | 2018-06-19 | 2018-09-07 | 羊远 | A kind of elevator automatic hand rail band cleaning robot |
| CN108500999B (en) * | 2018-06-19 | 2021-04-13 | 绍兴市晟途环保科技有限公司 | Automatic handrail area cleaning machines people of elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108002203B (en) | 2019-04-16 |
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