CN105645309B - 一种多功能纺织手推车 - Google Patents

一种多功能纺织手推车 Download PDF

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CN105645309B
CN105645309B CN201610142819.0A CN201610142819A CN105645309B CN 105645309 B CN105645309 B CN 105645309B CN 201610142819 A CN201610142819 A CN 201610142819A CN 105645309 B CN105645309 B CN 105645309B
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placing frame
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CN105645309A (zh
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马先智
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Suqian Zhicheng Textile Co.,Ltd.
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08Radiation
    • A61L2/10Ultraviolet radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/10Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by supports specially adapted to objects of definite shape
    • B62B3/104Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by supports specially adapted to objects of definite shape the object being of cylindrical shape, e.g. barrels, buckets, dustbins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/11Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/14Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20Targets to be treated
    • A61L2202/26Textiles, e.g. towels, beds, cloths
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2202/00Indexing codes relating to type or characteristics of transported articles
    • B62B2202/02Cylindrically-shaped articles, e.g. drums, barrels, flasks
    • B62B2202/025Reels, e.g. for filamentary or sheet material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2204/00Ventilation; Heating; Cooling; Insulation
    • B62B2204/02Ventilation; Heating; Cooling; Insulation comprising a heating unit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

本发明公开了一种多功能纺织手推车,包括底座、布料放置框和气缸,所述空腔的底部设有电磁加热块,所述电磁加热块通过导线与PLC控制器电性连接,所述布料放置框的内壁两侧对称设有菌种记数传感器和温湿度传感器,所述菌种记数传感器和温湿度传感器通过导线与PLC控制器电性连接,所述菌种记数传感器和温湿度传感器的上端在布料放置框的内壁固定有两组平板紫外杀菌灯,所述平板紫外杀菌灯通过导线与PLC控制器电性连接。本发明设计合理,操作简单,能够大大提高工作效率和具有很强是加热杀菌功能,而且能够实时监控布料放置框内部的温湿度和菌种状况等。

Description

一种多功能纺织手推车
技术领域
本发明属于纺织技术领域,具体涉及一种多功能纺织手推车。
背景技术
众所周知,纺织完成后,均将布料成卷分装,每卷布料的形成通常是由卷取辊在驱动装置的带动下将布料卷取在卷取辊上形成的,在卷取到一定量的布料后,就需要移除已经成卷的卷取辊,更换新的卷取辊,然而,在移除已经成卷的卷取辊时,通常是依靠工人搬运,搬放在推车中完成卷取辊的搬运。人工搬运不仅工作效率低下,而且安全系数低。
现有的推车功能单一,使用周期短,没有有效的杀菌消毒加热措施,这就导致在下雨,下雪的天气容易腐蚀,且在搬运过程中,工作人员频发接触,致使布料染有大量的细菌和汗水,这样会致使布料存储时间减段,致使布料感染、褪色等情况。
发明内容
本发明的目的在于提供一种多功能纺织手推车,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种多功能纺织手推车,包括底座、布料放置框和气缸,所述底座的底部对称设有两组万向轮,且所述底座的右侧设有手推部,所述手推部的侧面固定有PLC控制器,所述布料放置框设置在手推部的左侧,所述布料放置框的内部设有透气搁置网,所述布料放置框与透气搁置网之间预留有空腔,所述空腔的底部设有电磁加热块,所述电磁加热块通过导线与PLC控制器电性连接,所述布料放置框的内壁两侧对称设有菌种记数传感器和温湿度传感器,所述菌种记数传感器和温湿度传感器通过导线与PLC控制器电性连接,所述菌种记数传感器和温湿度传感器的上端在布料放置框的内壁固定有两组平板紫外杀菌灯,所述平板紫外杀菌灯通过导线与PLC控制器电性连接,所述气缸固定在底座的左端,且气缸的伸缩杆的端部固定有滑块,所述滑块与滑轨滑动连接,所述滑轨设置在底座的上表面,且滑轨设置在布料放置框的左侧,所述滑块的上表面固定有液压升降机构。
优选的,所述液压升降机构包括第一液压伸缩缸、第二液压伸缩缸和弧形托架,所述第一液压伸缩缸的一端固定在滑块的上表面,且第一液压伸缩缸的另一端与弧形托架的对称轴铰接,第二液压伸缩缸的一端固定在滑块的上表面右端,且第二液压伸缩缸的另一端与弧形托架的端部铰接。
优选的,所述PLC控制器的表面镶嵌有用于显示菌种数量及种类和温湿度的LED显示屏。
优选的,所述PLC控制器的底部固定有无线通讯装置,无线通讯装置为WiFi通讯装置或者GPRS通讯装置或者射频通讯装置。
本发明的技术效果和优点:该多功能纺织手推车,与传统的纺织推车相比,本发明设计合理,操作简单,能够大大提高工作效率和具有很强是加热杀菌功能,而且能够实时监控布料放置框内部的温湿度和菌种状况等,其气缸能够带动滑块左右移动,而液压升降机构能够带动卷取辊上下移动,因此,该手推车能够大大提高工人工作效率,降低工作的危险性,而菌种记数传感器能够采集布料放置框内的细菌种类和数量,然后把该信号传递给PLC控制器,PLC控制器处理该信号后作出相应的处理来控制平板紫外杀菌灯是否工作,温湿度传感器能够采集温湿度信号,该信号传递给PLC控制器来控制电磁加热块的工作。
附图说明
图1为本发明的结构示意图。
图中:1底座、2布料放置框、3透气搁置网、4空腔、5电磁加热块、6菌种记数传感器、7温湿度传感器、8平板紫外杀菌灯、9气缸、10滑块、11滑轨、12液压升降机构、13万向轮、14手推部、15PLC控制器。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明提供了如图1所示的一种多功能纺织手推车,包括底座1、布料放置框2和气缸9,所述底座1的底部对称设有两组万向轮13,且所述底座1的右侧设有手推部14,所述手推部14的侧面固定有PLC控制器15,所述PLC控制器15的表面镶嵌有用于显示菌种数量及种类和温湿度的LED显示屏,所述PLC控制器15的底部固定有无线通讯装置,无线通讯装置为WiFi通讯装置或者GPRS通讯装置或者射频通讯装置,所述布料放置框2设置在手推部14的左侧,所述布料放置框2的内部设有透气搁置网3,所述布料放置框2与透气搁置网3之间预留有空腔4,所述空腔4的底部设有电磁加热块5,所述电磁加热块5通过导线与PLC控制器15电性连接,所述布料放置框2的内壁两侧对称设有菌种记数传感器6和温湿度传感器7,所述菌种记数传感器6和温湿度传感器7通过导线与PLC控制器15电性连接,所述菌种记数传感器6和温湿度传感器7的上端在布料放置框2的内壁固定有两组平板紫外杀菌灯8,所述平板紫外杀菌灯8通过导线与PLC控制器15电性连接,所述气缸9固定在底座1的左端,且气缸9的伸缩杆的端部固定有滑块10,所述滑块10与滑轨11滑动连接,所述滑轨11设置在底座1的上表面,且滑轨11设置在布料放置框2的左侧,所述滑块10的上表面固定有液压升降机构12,所述液压升降机构12包括第一液压伸缩缸、第二液压伸缩缸和弧形托架,第一液压伸缩缸的一端固定在滑块10的上表面,且第一液压伸缩缸的另一端与弧形托架的对称轴铰接,第二液压伸缩缸的一端固定在滑块10的上表面右端,且第二液压伸缩缸的另一端与弧形托架的端部铰接。
工作原理:使用时,打开PLC控制器,让气缸和电磁加热块等正常工作,其气缸9能够带动滑块10左右移动,而液压升降机构12能够带动卷取辊上下移动,因此,该手推车能够大大提高工人工作效率,降低工作的危险性,而菌种记数传感器6能够采集布料放置框2内的细菌种类和数量,然后把该信号传递给PLC控制器15,PLC控制器15处理该信号后作出相应的处理来控制平板紫外杀菌灯8是否工作,温湿度传感器7能够采集温湿度信号,该信号传递给PLC控制器15来控制电磁加热块5的工作。本发明设计合理,操作简单,能够大大提高工作效率和具有很强是加热杀菌功能,而且能够实时监控布料放置框内部的温湿度和菌种状况等。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (1)

1.一种多功能纺织手推车,包括底座(1)、布料放置框(2)和气缸(9),其特征在于:
所述底座(1)的底部对称设有两组万向轮(13),且所述底座(1)的右侧设有手推部(14),所述手推部(14)的侧面固定有PLC控制器(15),所述布料放置框(2)设置在手推部(14)的左侧,所述布料放置框(2)的内部设有透气搁置网(3),所述布料放置框(2)与透气搁置网(3)之间预留有空腔(4),所述空腔(4)的底部设有电磁加热块(5),所述电磁加热块(5)通过导线与PLC控制器(15)电性连接,所述布料放置框(2)的内壁两侧对称设有菌种记数传感器(6)和温湿度传感器(7),所述菌种记数传感器(6)和温湿度传感器(7)通过导线与PLC控制器(15)电性连接,所述菌种记数传感器(6)和温湿度传感器(7)的上端在布料放置框(2)的内壁固定有两组平板紫外杀菌灯(8),所述平板紫外杀菌灯(8)通过导线与PLC控制器(15)电性连接,所述气缸(9)固定在底座(1)的左端,且气缸(9)的伸缩杆的端部固定有滑块(10),所述滑块(10)与滑轨(11)滑动连接,所述滑轨(11)设置在底座(1)的上表面,且滑轨(11)设置在布料放置框(2)的左侧,所述滑块(10)的上表面固定有液压升降机构(12);
所述液压升降机构(12)包括第一液压伸缩缸、第二液压伸缩缸和弧形托架,第一液压伸缩缸的一端固定在滑块(10)的上表面,且第一液压伸缩缸的另一端与弧形托架的对称轴铰接,第二液压伸缩缸的一端固定在滑块(10)的上表面右端,且第二液压伸缩缸的另一端与弧形托架的端部铰接;
所述PLC控制器(15)的表面镶嵌有用于显示菌种数量及种类和温湿度的LED显示屏;
所述PLC控制器(15)的底部固定有无线通讯装置,无线通讯装置为WiFi通讯装置或者GPRS通讯装置或者射频通讯装置。
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CN107521535A (zh) * 2017-07-28 2017-12-29 芜湖市振华戎科智能科技有限公司 人工智能安防芯片的储存转运一体化装置
CN107472317A (zh) * 2017-09-18 2017-12-15 盐城方正医药科技有限公司 一种具有灭菌功能的阿奇霉素生产用输送装置
CN108313092A (zh) * 2018-01-31 2018-07-24 海宁依普卡进出口有限公司 一种纺织用布料存放装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161489A6 (en) * 1971-11-26 1973-07-06 Anvar Carriage for transporting cloth beams - is adaptable for large diameter cloth rolls
CN104090558A (zh) * 2014-07-15 2014-10-08 无锡北斗星通信息科技有限公司 一种纺织车间环境监控方法
CN204713132U (zh) * 2015-06-05 2015-10-21 林玉英 纺织推车
CN105015589A (zh) * 2015-08-25 2015-11-04 苏州星原纺织有限公司 一种消毒杀菌纺织推车
CN105059342A (zh) * 2015-08-17 2015-11-18 吴江金叶织造有限公司 一种纺织推车
CN205398006U (zh) * 2016-03-13 2016-07-27 周盈裕 一种多功能纺织手推车

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161489A6 (en) * 1971-11-26 1973-07-06 Anvar Carriage for transporting cloth beams - is adaptable for large diameter cloth rolls
CN104090558A (zh) * 2014-07-15 2014-10-08 无锡北斗星通信息科技有限公司 一种纺织车间环境监控方法
CN204713132U (zh) * 2015-06-05 2015-10-21 林玉英 纺织推车
CN105059342A (zh) * 2015-08-17 2015-11-18 吴江金叶织造有限公司 一种纺织推车
CN105015589A (zh) * 2015-08-25 2015-11-04 苏州星原纺织有限公司 一种消毒杀菌纺织推车
CN205398006U (zh) * 2016-03-13 2016-07-27 周盈裕 一种多功能纺织手推车

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