WO2022188271A1 - 一种用于校区下水道井盖的保护装置 - Google Patents

一种用于校区下水道井盖的保护装置 Download PDF

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WO2022188271A1
WO2022188271A1 PCT/CN2021/095423 CN2021095423W WO2022188271A1 WO 2022188271 A1 WO2022188271 A1 WO 2022188271A1 CN 2021095423 W CN2021095423 W CN 2021095423W WO 2022188271 A1 WO2022188271 A1 WO 2022188271A1
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manhole cover
movably connected
plate
sewer
protection device
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PCT/CN2021/095423
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English (en)
French (fr)
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罗彩莲
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广州特尼卡机械科技有限公司
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Publication of WO2022188271A1 publication Critical patent/WO2022188271A1/zh

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1481Security devices, e.g. indicating unauthorised opening
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings

Definitions

  • the invention relates to the technical field of construction, in particular to a protection device for a manhole cover of a school district sewer.
  • Construction refers to the artificially constructed assets, which belong to the category of fixed assets, including two categories of houses and structures.
  • Houses refer to engineering buildings for people to live, work, study, produce, operate, entertain, store and carry out other social activities.
  • structures which refer to engineering buildings other than houses, such as walls, roads, dams, wells, tunnels, water towers, bridges and chimneys, etc.
  • sewers are essential in our lives and are used to Discharge of sewage from urban roads.
  • the sewers used in schools are also very important to prevent water accumulation in schools during the rainy season.
  • the students in the school are younger, and it is very likely that children's hands or feet will get stuck in the cover of the small waterway.
  • the teacher finds it out in time, it will leave a psychological shadow on the students and may lead to danger. Therefore, we propose a protective device for the school sewer manhole cover to solve the above problems.
  • pass Squeeze the bulge to close the protective plate prevent jamming, simple operation, high degree of automation, prevent children from being hurt, and improve safety.
  • the present invention provides a protection device for a campus sewer well cover, which has the advantages of simple operation, high degree of automation, preventing children from being hurt, and improving safety, and solves the problem of some primary schools and kindergartens.
  • the students in the school are younger, and it is very likely that the children's hands or feet will get stuck in the gaps of the small waterway manhole covers. If the teacher does not find out in time, it will leave a psychological shadow on the students and may lead to dangerous problems.
  • a protection device for a campus sewer cover including ground, a sewer cover and a protrusion, all of which are
  • the inside of the manhole cover is provided with a sewer hole
  • the interior of the manhole cover is movably connected with a connecting seat
  • the right side of the connecting seat is movably connected with a protective plate
  • the right side of the protective plate is movably connected with a fixing seat
  • the A magnetic block is movably connected inside the fixed seat
  • an electromagnet is movably connected to the right side of the manhole cover
  • a protective seat is movably connected to the outer side of the sewer hole
  • a photoresistor is movably connected inside the protective seat.
  • a reminder is movably connected to the outside of the well cover, a pressing block is movably connected to the back of the protrusion, a dielectric plate is movably connected to the inside of the pressing block, a movable spring is movably connected to the back of the protrusion, and the ground
  • the interior of the ground is fixedly connected with a positive plate, the interior of the ground is fixedly connected with a negative plate, and the interior of the ground is fixedly connected with a varistor.
  • the bulge is located on the top of the ground, the bulge is higher than the ground, and the bulge surrounds the manhole cover.
  • the protective plate is unfolded to prevent the foot from being stuck inside the manhole. Danger.
  • the opposite surfaces of the magnet block and the electromagnet are magnetically opposite, and the electromagnet is electrically connected to the varistor.
  • the electromagnet is energized and attracts the magnet block.
  • the photoresistors are electrically connected to the reminder.
  • the photoresistors are in the channel state, and the reminder will transmit dangerous messages. Go out and reduce the harm to children.
  • the protective plate is located at the bottom of the manhole cover, and the protective plate is a retractable mesh structure.
  • the protrusion is made of a rubber material, and when the foot contacts the protrusion, the protrusion is squeezed, and the extrusion block moves downward.
  • the negative plate is electrically connected to the varistor, and when the current between the positive plate and the negative plate is less than the maximum passage voltage of the varistor, the varistor is in the on state.
  • the positive plate and the negative plate have the same shape, and the positive plate and the negative plate are symmetrical with respect to the dielectric plate.
  • the dielectric plate moves downward, the relative area between the positive plate and the negative plate decreases.
  • the present invention provides a protection device for the manhole cover of the campus sewer, which has the following beneficial effects:
  • the protection device used for the manhole cover of the campus sewer.
  • the squeezing block moves down, and the inside of the squeezing block is movably connected to the dielectric plate, and the dielectric plate moves downward.
  • the current between the positive plate and the negative plate is less than The maximum passage voltage of the varistor, the varistor is in the on state, the electromagnet is electrically connected to the varistor, the electromagnet is energized and attracts the magnetic block, and the protective plate is unfolded to prevent the foot from being stuck in the water hole, which may cause danger. Simple, high degree of automation, avoid injury to children, and improve safety.
  • Fig. 1 is the structural representation of the present invention
  • Figure 2 is a schematic diagram of the moving structure of the protective plate of the present invention.
  • FIG. 3 is a schematic view of the front structure of the protrusion of the present invention.
  • FIG. 4 is a schematic diagram of the moving structure of the dielectric plate of the present invention.
  • a protection device for a campus sewer manhole cover including a ground 1, a manhole cover 2 and a protrusion 12, the manhole cover 2 is provided with a sewer hole 3 inside, and the interior of the manhole cover 2 is movably connected with a connection Base 4, the right side of the connection base 4 is movably connected with a protective plate 5, the protective plate 5 is located at the bottom of the manhole cover 2, the protective plate 5 is a retractable mesh structure, and the right side of the protective plate 5 is movably connected with a fixed seat 6.
  • a magnetic block 7 is movably connected to the inside of the fixed seat 6.
  • the opposite surface of the magnetic block 7 and the electromagnet 8 is magnetically opposite, and the electromagnet 8 is electrically connected to the varistor 18.
  • the electromagnet 8 When the varistor 18 is connected, the electromagnet 8 The magnet block 7 attracts electricity when electrified, an electromagnet 8 is movably connected to the right side of the drain cover 2, a protective seat 9 is movably connected to the outer side of the drain hole 3, and a photoresistor 10 is movably connected to the inside of the protective seat 9, and the photoresistor 10 has two One, and the photoresistor 10 is electrically connected to the reminder 11.
  • the photoresistor 10 When the child's feet or hands are stuck inside the drain hole 3, the photoresistor 10 is in an open state at this time, and the reminder 11 will transmit the dangerous information, reducing the risk of danger to children.
  • a reminder 11 is movably connected to the outside of the manhole cover 2.
  • the protrusion 12 is located on the top of the ground 1.
  • the protrusion 12 is made of a rubber material. When the foot contacts the protrusion 12, the protrusion 12 is squeezed, and the extrusion block 13 moves downward. , the protrusion 12 is higher than the ground 1, and the protrusion 12 surrounds the manhole cover 2. When the child steps on the protrusion 12, the protective plate 5 is unfolded to prevent the foot from being stuck in the drain hole 3.
  • the back of 12 is movably connected with an extrusion block 13, the interior of the extrusion block 13 is movably connected with a dielectric plate 14, the back of the protrusion 12 is movably connected with a movable spring 15, the interior of the ground 1 is fixedly connected with a positive plate 16, A negative plate 17 is fixedly connected inside, the positive plate 16 and the negative plate 17 have the same shape, and the positive plate 16 and the negative plate 17 are symmetrical with respect to the dielectric plate 14.
  • the dielectric plate 14 moves downward, the gap between the positive plate 16 and the negative plate 17 The relative area decreases, and the negative plate 17 is electrically connected to the varistor 18.
  • the varistor 18 is in the on state, and the interior of the ground 1 A varistor 18 is permanently connected.
  • the inside of the manhole cover 2 is provided with a sewer hole 3, the protrusion 12 is a rubber material located on the top of the ground 1, and the protrusion 12 surrounds the manhole cover 2.
  • the protrusion 12 When children play around, their feet touch the protrusions.
  • Lift up 12 squeeze the protrusion 12, the squeeze block 13 moves downward, and the inside of the squeeze block 13 is movably connected to the dielectric plate 14.
  • the dielectric plate 14 moves downward, the relative area between the positive plate 16 and the negative plate 17 decreases.
  • the negative plate 17 is electrically connected to the varistor 18.
  • the varistor 18 is in the on state, and the electromagnet 8 is electrically connected to the varistor 18.
  • the electromagnet 8 is energized and attracts the magnetic block 7, and the protective plate 5 is unfolded to prevent the foot from being caught in the water hole 3.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

本发明涉及建筑技术领域,且公开了一种用于校区下水道井盖的保护装置,包括地面、下水井盖和凸起,所述下水井盖的内部开设有下水孔,所述下水井盖的内部活动连接有连接座,所述连接座的右侧活动连接有防护板,所述防护板的右侧活动连接有固定座,所述固定座的内部活动连接有磁块。该用于校区下水道井盖的保护装置,通过挤压凸起,挤压块向下移动,挤压块内部活动连接电介质板,电介质板向下移动,当正极板与负极板之间电流小于压敏电阻的最大通路电压,压敏电阻处于通路状态,电磁铁与压敏电阻电性连接,电磁铁通电与磁块相吸,防护板展开,防止脚被卡在下水孔内部出现危险,操作简单,自动化程度高,避免小朋友受到伤害,提高了安全性。

Description

一种用于校区下水道井盖的保护装置
本申请要求2021年3月10日提交中国专利局、申请号为202110257978.6、发明名称为“一种用于校区下水道井盖的保护装置”的发明专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及建筑技术领域,具体为一种用于校区下水道井盖的保护装置。
背景技术
建筑指人工建筑而成的资产,属于固定资产范畴,包括房屋和构建物两大类,房屋是指供人居住、工作、学习、生产、经营、娱乐、储藏物品以及进行其他社会活动的工程建筑,与建筑物有区别的是构筑物,构建物指房屋以外的工程建筑,如围墙、道路、水坝、水井、隧道、水塔、桥梁和烟囱等,其中下水道在我们的生活中必不可少,用来排放城市路面的污水。
其中用于学校的下水道也非常重要,防止在多雨季节,学校出现积水现象,但是对于一些小学和幼儿园,在校学生年级较小,极有可能出现小朋友的手或者脚卡在小水道井盖的缝隙里,若老师发现不及时,会给学生留下心理阴影,还有可能导致危险,因此,我们提出了一种用于校区下水道井盖的保护装置来解决以上问题,当小朋友玩耍到四周,通过挤压凸起使得防护板闭合,防止卡住,操作简单,自动化程度高,避免小朋友受到伤害,提高了安全性。
发明内容
(一)解决的技术问题
针对现有技术的不足,本发明提供了一种用于校区下水道井盖的保护装置,具备操作简单,自动化程度高,避免小朋友受到伤害,提高了安全性的优点,解决了对于一些小学和幼儿园,在校学生年级较小,极有可能出现小朋友的手或者脚卡在小水道井盖的缝隙里,若老师发现不及时,会给学生留下心理阴影,还有可能导致危险的问题。
(二)技术方案
为实现上述操作简单,自动化程度高,避免小朋友受到伤害,提高了安全性的目的,本发明提供如下技术方案:一种用于校区下水道井盖的保护装置,包括地面、下水井盖和凸起,所述下水井盖的内部开设有下水孔,所述下水井盖的内部活动连接有连接座,所述连接座的右侧活动连接有防护板,所述防护板的右侧活动连接有固定座,所述固定座的内部活动连接有磁块,所述下水井盖的右侧活动连接有电磁铁,所述下水孔的外侧活动连接有防护座,所述防护座的内部活动连接有光敏电阻,所述下水井盖的外侧活动连接有提醒器,所述凸起的背面活动连接有挤压块,所述挤压块的内部活动连接有电介质板,所述凸起的背面活动连接有活动弹簧,所述地面的内部固定连接有正极板,所述地面的内部固定连接有负极板,所述地面的内部固定连接有压敏电阻。
优选的,所述凸起位于地面的顶部,凸起高于地面,且凸起环绕 在下水井盖的四周,当儿童踩到凸起,此时防护板展开,防止脚被卡在下水孔内部出现危险。
优选的,所述磁块与电磁铁的相对面磁性相反,且电磁铁与压敏电阻电性连接,当压敏电阻通路,电磁铁通电与磁块相吸。
优选的,所述光敏电阻有两个,且光敏电阻与提醒器电性连接,当小朋友的脚或者手被卡在下水孔内部,此时光敏电阻处于通路状态,提醒器会将危险的讯息传递出去,降低对小朋友的危害。
优选的,所述防护板位于下水井盖的底部,防护板为一种可伸缩的网状结构。
优选的,所述凸起为一种橡胶材质,当脚接触凸起,挤压凸起,挤压块向下移动。
优选的,所述负极板与压敏电阻电性连接,当正极板与负极板之间电流小于压敏电阻的最大通路电压,压敏电阻处于通路状态。
优选的,所述正极板与负极板的形状相同,且正极板与负极板关于电介质板对称,当电介质板向下移动,正极板与负极板之间相对面积减小。
(三)有益效果
与现有技术相比,本发明提供了一种用于校区下水道井盖的保护装置,具备以下有益效果:
1、该用于校区下水道井盖的保护装置,通过挤压凸起,挤压块向下移动,挤压块内部活动连接电介质板,电介质板向下移动,当正 极板与负极板之间电流小于压敏电阻的最大通路电压,压敏电阻处于通路状态,电磁铁与压敏电阻电性连接,电磁铁通电与磁块相吸,防护板展开,防止脚被卡在下水孔内部出现危险,操作简单,自动化程度高,避免小朋友受到伤害,提高了安全性。
2、该用于校区下水道井盖的保护装置,光敏电阻有两个,且光敏电阻与提醒器电性连接,当小朋友的脚或者手被卡在下水孔内部,此时光敏电阻处于通路状态,提醒器会将危险的讯息传递出去,降低对小朋友的危害,提高了安全性。
附图说明
图1为本发明结构示意图;
图2为本发明防护板移动结构示意图;
图3为本发明凸起正视结构示意图;
图4为本发明电介质板移动结构示意图。
图中:1、地面;2、下水井盖;3、下水孔;4、连接座;5、防护板;6、固定座;7、磁块;8、电磁铁;9、防护座;10、光敏电阻;11、提醒器;12、凸起;13、挤压块;14、电介质板;15、活动弹簧;16、正极板;17、负极板;18、压敏电阻。
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。
请参阅图1-4,一种用于校区下水道井盖的保护装置,包括地面1、下水井盖2和凸起12,下水井盖2的内部开设有下水孔3,下水井盖2的内部活动连接有连接座4,连接座4的右侧活动连接有防护板5,防护板5位于下水井盖2的底部,防护板5为一种可伸缩的网状结构,防护板5的右侧活动连接有固定座6,固定座6的内部活动连接有磁块7,磁块7与电磁铁8的相对面磁性相反,且电磁铁8与压敏电阻18电性连接,当压敏电阻18通路,电磁铁8通电与磁块7相吸,下水井盖2的右侧活动连接有电磁铁8,下水孔3的外侧活动连接有防护座9,防护座9的内部活动连接有光敏电阻10,光敏电阻10有两个,且光敏电阻10与提醒器11电性连接,当小朋友的脚或者手被卡在下水孔3内部,此时光敏电阻10处于通路状态,提醒器11会将危险的讯息传递出去,降低对小朋友的危害。
下水井盖2的外侧活动连接有提醒器11,凸起12位于地面1的顶部,凸起12为一种橡胶材质,当脚接触凸起12,挤压凸起12,挤压块13向下移动,凸起12高于地面1,且凸起12环绕在下水井盖2的四周,当儿童踩到凸起12,此时防护板5展开,防止脚被卡在下水孔3内部出现危险,凸起12的背面活动连接有挤压块13,挤压块13的内部活动连接有电介质板14,凸起12的背面活动连接有活动弹簧15,地面1的内部固定连接有正极板16,地面1的内部固定连接 有负极板17,正极板16与负极板17的形状相同,且正极板16与负极板17关于电介质板14对称,当电介质板14向下移动,正极板16与负极板17之间相对面积减小,负极板17与压敏电阻18电性连接,当正极板16与负极板17之间电流小于压敏电阻18的最大通路电压,压敏电阻18处于通路状态,地面1的内部固定连接有压敏电阻18。
工作原理:下水井盖2的内部开设有下水孔3,凸起12为一种橡胶材质位于地面1的顶部,且凸起12环绕在下水井盖2的四周,当小朋友在四周玩耍时,脚接触凸起12,挤压凸起12,挤压块13向下移动,挤压块13内部活动连接电介质板14,当电介质板14向下移动,正极板16与负极板17之间相对面积减小,负极板17与压敏电阻18电性连接,当正极板16与负极板17之间电流小于压敏电阻18的最大通路电压,压敏电阻18处于通路状态,电磁铁8与压敏电阻18电性连接,电磁铁8通电与磁块7相吸,防护板5展开,防止脚被卡在下水孔3内部出现危险,光敏电阻10有两个,且光敏电阻10与提醒器11电性连接,当小朋友的脚或者手被卡在下水孔3内部,此时光敏电阻10处于通路状态,提醒器11会将危险的讯息传递出去,降低对小朋友的危害。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。

Claims (8)

  1. 一种用于校区下水道井盖的保护装置,包括地面(1)、下水井盖(2)和凸起(12),其特征在于:所述下水井盖(2)的内部开设有下水孔(3),所述下水井盖(2)的内部活动连接有连接座(4),所述连接座(4)的右侧活动连接有防护板(5),所述防护板(5)的右侧活动连接有固定座(6),所述固定座(6)的内部活动连接有磁块(7),所述下水井盖(2)的右侧活动连接有电磁铁(8),所述下水孔(3)的外侧活动连接有防护座(9),所述防护座(9)的内部活动连接有光敏电阻(10),所述下水井盖(2)的外侧活动连接有提醒器(11),所述凸起(12)的背面活动连接有挤压块(13),所述挤压块(13)的内部活动连接有电介质板(14),所述凸起(12)的背面活动连接有活动弹簧(15),所述地面(1)的内部固定连接有正极板(16),所述地面(1)的内部固定连接有负极板(17),所述地面(1)的内部固定连接有压敏电阻(18)。
  2. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述凸起(12)位于地面(1)的顶部,凸起(12)高于地面(1),且凸起(12)环绕在下水井盖(2)的四周。
  3. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述磁块(7)与电磁铁(8)的相对面磁性相反,且电磁铁(8)与压敏电阻(18)电性连接。
  4. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述光敏电阻(10)有两个,且光敏电阻(10)与提醒 器(11)电性连接。
  5. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述防护板(5)位于下水井盖(2)的底部。
  6. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述凸起(12)为一种橡胶材质。
  7. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述负极板(17)与压敏电阻(18)电性连接。
  8. 根据权利要求1所述的一种用于校区下水道井盖的保护装置,其特征在于:所述正极板(16)与负极板(17)的形状相同,且正极板(16)与负极板(17)关于电介质板(14)对称。
PCT/CN2021/095423 2021-03-10 2021-05-24 一种用于校区下水道井盖的保护装置 WO2022188271A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3926677B2 (ja) * 2002-05-31 2007-06-06 日本アンテナ株式会社 スロットアンテナ
JP5563135B2 (ja) * 2012-09-28 2014-07-30 株式会社Iro Icタグ組み込みマンホール蓋およびマンホール蓋用icタグ
CN111501842A (zh) * 2020-04-20 2020-08-07 安徽宏华铸造有限公司 一种防掉落的路面安防井盖
CN211447022U (zh) * 2019-07-15 2020-09-08 泉州职业技术大学 一种带警示功能的窨井盖
CN111980070A (zh) * 2020-08-31 2020-11-24 彭周兰 一种可根据雨水流量改变孔径的污水井盖
CN112389312A (zh) * 2020-10-30 2021-02-23 李剑 一种管道运输用防撞击安全保护装置
CN112428852A (zh) * 2020-11-19 2021-03-02 宁波吉鑫机械制造有限公司 一种具有自动高温过载保护的充电桩

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3926677B2 (ja) * 2002-05-31 2007-06-06 日本アンテナ株式会社 スロットアンテナ
JP5563135B2 (ja) * 2012-09-28 2014-07-30 株式会社Iro Icタグ組み込みマンホール蓋およびマンホール蓋用icタグ
CN211447022U (zh) * 2019-07-15 2020-09-08 泉州职业技术大学 一种带警示功能的窨井盖
CN111501842A (zh) * 2020-04-20 2020-08-07 安徽宏华铸造有限公司 一种防掉落的路面安防井盖
CN111980070A (zh) * 2020-08-31 2020-11-24 彭周兰 一种可根据雨水流量改变孔径的污水井盖
CN112389312A (zh) * 2020-10-30 2021-02-23 李剑 一种管道运输用防撞击安全保护装置
CN112428852A (zh) * 2020-11-19 2021-03-02 宁波吉鑫机械制造有限公司 一种具有自动高温过载保护的充电桩

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