CN108178114A - It is a kind of to utilize hydraulic pressure automatic cover-turning device - Google Patents

It is a kind of to utilize hydraulic pressure automatic cover-turning device Download PDF

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Publication number
CN108178114A
CN108178114A CN201711458684.XA CN201711458684A CN108178114A CN 108178114 A CN108178114 A CN 108178114A CN 201711458684 A CN201711458684 A CN 201711458684A CN 108178114 A CN108178114 A CN 108178114A
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CN
China
Prior art keywords
water tank
cover
manhole
mandril
inner water
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
Application number
CN201711458684.XA
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Chinese (zh)
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CN108178114B (en
Inventor
李定海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Shangshan Waterproof Construction Engineering Co ltd
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Wuhan Polytechnic University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Polytechnic University filed Critical Wuhan Polytechnic University
Priority to CN201711458684.XA priority Critical patent/CN108178114B/en
Publication of CN108178114A publication Critical patent/CN108178114A/en
Application granted granted Critical
Publication of CN108178114B publication Critical patent/CN108178114B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B66F19/00Hoisting, lifting, hauling or pushing, not otherwise provided for
    • B66F19/005Lifting devices for manhole covers

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Sewage (AREA)

Abstract

The present invention discloses a kind of utilization hydraulic pressure automatic cover-turning device, including Manhole cover assembly, hydraulic power component and transmission reset assembly, Manhole cover assembly includes cover seat of manhole and the manhole cover plate mutually fitted with its shape, manhole cover plate is rotatably assorted with cover seat of manhole, manhole cover plate is divided into first and second half plates by pivot center, the first half plates are can turn to below cover seat of manhole, are limited when turning under the second half plates by cover seat of manhole;Hydraulic power component includes outer, inner water tank and aqueduct, and inner water tank is set on outer water tank inner cavity top, and inner water tank lower port is equipped with lower cover, and rainwater is imported inner water tank by aqueduct;It is driven reset assembly and includes mandril and return unit, mandril lower end is fixedly connected with lower cover, and upper end is connect adjacent to the first half plates and with the first half plates by flexible connecting member.In technical solution provided by the invention, by the way that rainwater is imported inner water tank, using the rainwater gravitational force urges lower cover of resident inner water tank so that mandril moves downward, and the first half plates are pulled down, realize that manhole cover plate can be with automatic cover-turning in heavy rain.

Description

It is a kind of to utilize hydraulic pressure automatic cover-turning device
Technical field
The present invention relates to urban operating mechanism fields, more particularly to a kind of to utilize hydraulic pressure automatic cover-turning device.
Background technology
In rainfall more season, especially Shelter in South China Cities, when raining in torrents, since rain double-edged fine-toothed comb opening is smaller, rainwater is not It can be discharged into waste pipe Netease in time and cause urban waterlogging, usually pass through in rainstorm weather municipal administration personnel manually by the well lid of sewer It raises and is discharged into lower well to accelerate rainwater, but be inconvenient since bad weather is opened manually well lid and operates.
Invention content
The main object of the present invention is that proposition is a kind of aims to solve the problem that existing Sewage well cover using hydraulic pressure automatic cover-turning device It must be opened manually in rainstorm weather, the problem of the inconvenience that operates.
To achieve the above object, a kind of utilization hydraulic pressure automatic cover-turning device proposed by the present invention, including:
Manhole cover assembly, the manhole cover plate mutually fitted including cover seat of manhole and with the cover seat of manhole shape, and the manhole cover plate have phase To two turning end of setting, two turning end is rotatably assorted with the cover seat of manhole, and the pivot center of the manhole cover plate is by its point For the first half plates and the second half plates, wherein, the first half plate can be below the pivot axis to the cover seat of manhole, institute The second half plates are stated to be limited by the cover seat of manhole on direction is rotated down;
Hydraulic power component, including outer water tank, inner water tank and aqueduct, the inner water tank is set on the interior of the outer water tank Chamber top, and the lower port of the inner water tank is equipped with and is elastically mounted to the lower cover of the inner water tank, the aqueduct vertically to Setting, and the aqueduct lower end is connected with the inner water tank, the aqueduct upper end is run through and stretches out the outer water tank upwards, The aqueduct by rainwater importing the inner water tank;And
Reset assembly is driven, including mandril and return unit, the lower end of the mandril is fixedly connected with the lower cover, the top The upper end of bar is adjacent to the first half plates setting, and the upper end of the mandril is connected with the first half plate by flexible connecting member It connects, the mandril, which has, to be driven downward drawn-down position and be reset to and the first half plate by the return unit by the lower cover That supports supports position, and when being in the drawn-down position, the first half plate is pulled down by the flexible connecting member and opened downwards Open, when be in it is described support position when, the first half plate is supported in the mandril upper end upwards under the action of the return unit So that the manhole cover plate is closed and is kept.
Preferably, two turning end is two shafts, and the cover seat of manhole is being equipped with two turns with the two shafts corresponding position Axis hole.
Preferably, the second half plate outer edge extends outwardly equipped with shirt rim plate, and the shirt rim plate convex is equipped with limiting Support, the limited support with the cover seat of manhole for abutting, to be limited when being rotated to the second half plate in downward direction.
Preferably, the mandril is included vertically to extended mandril stage casing, and the mandril stage casing is through described outer The upper wall of water tank, and the mandril stage casing is located at the part of the outer water tank inner cavity and is disposed adjacent with the inner water tank, the top The extension of bar stage casing lower end is equipped with first is bent up trisection, the upper end for being bent up trisection towards what laterally upper side then extended upward It is detachably connected with the lower surface of the lower cover, mandril stage casing upper end is equipped with horizontal curved towards the opposite side extension in transverse direction Trisection, the horizontal curved trisection is running through the shaft wall and extend to immediately below the first half plate, the horizontal curved Trisection is connect with the first half plate by the flexible connecting member.
Preferably, the flexible connecting member is chain, and one end of the chain is connect with the end of the horizontal curved trisection, The back side of the other end and the first half plate is detachably connected.
Preferably, the return unit for the horizontal curved trisection downside vertically to the resetting spring of setting, it is described The lower end of resetting spring is fixedly installed in the side wall of the vertical shaft, and upper end is fixedly connected with the downside of the horizontal curved trisection.
Preferably, the transmission reset assembly further includes sliding rail, and the sliding rail is included vertically to extension and parallel setting In two ribs of the vertical shaft madial wall, the horizontal curved trisection is vertically to being slidably mounted between two rib.
Preferably, the lower cover of the inner water tank is evenly equipped with leakage hole, and the leakage hole is to by the water in the inner water tank It is lower to leak to the outer water tank.
Preferably, the outer water tank lower part is equipped with tapping pipe, and described tapping pipe one end is connected with the outer water tank, the other end It is connected with the vertical shaft, and tapping pipe cooperation is equipped at least one check-valves.
In technical solution provided by the invention, rainwater is imported, and described using being resident by inner water tank by the aqueduct Rainwater in inner water tank is to the pressure of the lower cover of the inner water tank, mandril to be driven to move downward and pulls down the first half plate, Realizing the manhole cover plate can automatically open in the case of heavy rain, and there is provided dynamic clamping head and quiet clamping heads so that after rain is small, institute Stating mandril can restore to support the state of the first half plate so that rainstorm weather uncap and rain is small or rain stop after the well The reset of cover board realizes automation, and technical solution of the present invention is pacified merely with the gravity of rainwater and the elastic force of dynamic clamping head and quiet clamping head Loopful is protected.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Structure according to these attached drawings obtains other attached drawings.
Fig. 1 is the overall schematic provided by the invention using hydraulic pressure automatic cover-turning device;
Fig. 2 is the floor map of Manhole cover assembly in Fig. 1;
Fig. 3 is the floor map of lower cover in Fig. 1.
Drawing reference numeral explanation:
Label Title Label Title
100 Vertical shaft 11 Cover seat of manhole
12 Shaft hole 13 Manhole cover plate
14 The first half plates 15 The second half plates
16 Shirt rim plate 17 Limited support
18 Shaft 21 Outer water tank
22 Inner water tank 23 Lower cover
231 Leakage hole 24 Aqueduct
31 Mandril 311 Mandril stage casing
312 It is bent up trisection 313 Horizontal curved trisection
32 Chain 4 Resetting spring
5 Sliding rail 51 Rib
6 Tapping pipe 61 Check-valves
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that relating to directionality instruction in the embodiment of the present invention, directionality instruction is only used for explaining Relative position relation, motion conditions under a certain particular pose between each component etc., if the particular pose changes, Directionality instruction also correspondingly changes correspondingly.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, it is somebody's turn to do " first ", " second " etc. Description be only used for description purpose, and it is not intended that instruction or implying its relative importance or implicit indicating indicated skill The quantity of art feature." first " is defined as a result, and the feature of " second " can be expressed or implicitly includes at least one spy Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy Based on enough realizations, the knot of this technical solution is will be understood that when the combination appearance of technical solution is conflicting or can not realize Conjunction is not present, also not the present invention claims protection domain within.
Present invention offer is a kind of to utilize hydraulic pressure automatic cover-turning device.Fig. 1 to Fig. 3 is provided by the invention automatic using hydraulic pressure One embodiment of flip cover assembly.
Referring to Fig. 1, in the present embodiment, include Manhole cover assembly, hydraulic power component using hydraulic pressure automatic cover-turning device And transmission reset assembly, the Manhole cover assembly include cover seat of manhole 11 and the manhole cover plate 13 mutually fitted with 11 shape of cover seat of manhole, And the manhole cover plate 13 has two turning end being oppositely arranged, two turning end is rotatably assorted with the cover seat of manhole 11, described The pivot center of manhole cover plate 13 is classified as the first half plates 14 and the second half plates 15, wherein, the first half plate 14 can be around described To 11 lower section of the cover seat of manhole, the second half plate 15 is limited pivot axis on direction is rotated down by the cover seat of manhole 11 Position;The hydraulic power component includes outer water tank 21, inner water tank 22 and aqueduct 24, and the inner water tank 22 is set on the outer water The inner cavity top of case 21, and the lower port of the inner water tank 22 is equipped with the lower cover 23 for being elastically mounted to the inner water tank 22, it is described Aqueduct 24 vertically to setting, and 24 lower end of the aqueduct is connected with the inner water tank 22, pass through by 24 upper end of aqueduct It wears and stretches out the outer water tank 21 upwards, the aqueduct 24 by rainwater importing the inner water tank 22;The transmission resets Component includes mandril 31 and return unit, and the lower end of the mandril 31 is fixedly connected with the lower cover 23, the upper end of the mandril 31 Neighbouring the first half plate 14 is set, and the upper end of the mandril 31 is connect with the first half plate 14 by flexible connecting member, The mandril 31, which has, to be driven downward drawn-down position and be reset to and described the first half by the return unit by the lower cover 23 What plate 14 was supported supports position, and when being in the drawn-down position, the first half plate 14 is pulled down simultaneously by the flexible connecting member Open downwards, when be in it is described support position when, 31 upper end of mandril is supported described upwards under the action of the return unit The first half plates 14 are so that the manhole cover plate 13 is closed and kept.
In technical solution provided by the invention, rainwater is imported, and utilize resident by inner water tank 22 by the aqueduct 24 Rainwater in the inner water tank 22 to the pressure of the lower cover 23 of the inner water tank 22, come the mandril 31 is driven to move downward and under The first half plate 14 is drawn, realizing the manhole cover plate 13 can automatically open in the case of heavy rain, and there is provided elasticity Return unit so that after rain is small, the mandril 31 can restore to support the state of the first half plate 14 so that in opening for rainstorm weather Lid and rain is small or rain stops the reset of the rear manhole cover plate 13 and realizes automation, and technical solution of the present invention is merely with rainwater Gravity and dynamic clamping head and quiet clamping head elastic force safety and environmental protection.
In order to realize the rotation of the manhole cover plate 13, specifically referring to Fig. 2, two turning end is two shafts 18, institute It states cover seat of manhole 11 and is being equipped with two shaft holes 12 with two shafts, 18 corresponding position.Certain turning end is not limited in setting Two shaft 18, can also be arranged to flexural pivot, i.e., be correspondingly arranged into two ball hinges on described cover seat of manhole 11.Two shaft 18 Setting with two shaft hole 12 enables the manhole cover plate 13 neatly to rotate, and due to the first half plate 14 when rotating And the similar weight of the second half plate 15 so that described the first half are pulled open downwards or the first half plate 14 of slippaging upwards When it is relatively labor-saving so that the active force loaded in the mandril 31 does not have to too big so that uncaps and closes the process covered and more may be used It leans on.
In order to be limited to the rotation of the manhole cover plate 13, referring to Fig. 2, the second half 15 outer edge of plate is outside Extension is equipped with shirt rim plate 16, and 16 convex of shirt rim plate is equipped with limited support 17.The setting of the shirt rim plate 16 causes described The first half plates 14 in upward closed reduction, the manhole cover plate 13 can be supported by the shirt rim plate 16 and the cover seat of manhole 11 into Row limiting, the setting of the limited support 17 further enhance the limiting to the manhole cover plate 13, and normally closed In the case of, the setting of the shirt rim plate 16 and the limited support 17 substantially reduces the mandril 31 and two shaft 18 bearing capacity so that the safety for trampling passerby on it is more secure.
Further referring to Fig. 1, the mandril 31 is included vertically to extended mandril stage casing 311, the mandril The upper wall of the outer water tank 21 is run through in stage casing 311, and the mandril stage casing 311 is located at part and the institute of 21 inner cavity of outer water tank It states inner water tank 22 to be disposed adjacent, 311 lower end of the mandril stage casing extension is equipped with what is first towards laterally upper side then upward extended Trisection 312 is bent up, the upper end for being bent up trisection 312 and the lower surface of the lower cover 23 are detachably connected, the mandril 311 upper end of stage casing is equipped with horizontal curved trisection 313 towards the opposite side extension in transverse direction, and the horizontal curved trisection 313 is running through It 100 side wall of vertical shaft and extends to immediately below the first half plate 14, the horizontal curved trisection 313 passes through with the first half plate 14 The flexible connecting member connection.
Referring to Fig. 1, the flexible connecting member is chain 32, one end of the chain 32 and the horizontal curved trisection 313 End connection, the back side of the other end and the first half plate 14 is detachably connected.The flexible connecting member is also chosen as steel wire Rope or nylon rope, using chain 32, the material generally use plating straight-chromiun stainless steel of the chain 32 in the embodiment of the present invention so that It is not easy to get rusty during use, the use of the chain 32 is more convenient for fixing compared with steel wire rope and nylon rope, by mating Connector be easy to hinged with the manhole cover plate 13 and the horizontal curved trisection 313, and the degree of flexibility of chain 32 is higher, keeps away Exempt from that knotting phenomenon occurs when uncapping so that the process for opening the manhole cover plate 13 is more reliable.
In order to realize the reset of the manhole cover plate 13, referring to Fig. 1, the return unit is the horizontal curved trisection 313 Vertically to the resetting spring of setting 4, the lower end of the resetting spring 4 is fixedly installed in the side wall of the vertical shaft 100 for downside, Upper end is fixedly connected with the downside of the horizontal curved trisection 313.The return unit is not limited in resetting spring 4, can also adopt With elastic reset bar, the position of the resetting spring 4 is not limited only to be installed on the downside of the horizontal curved trisection 313, can also pacify Between the opening end of the lower cover 23 and the side wall of the inner water tank 22, being installed on resetting spring 4 in the present embodiment The downside of the horizontal curved trisection 313 avoids resetting spring 4 and the corrosion of rainwater Long Term Contact and then causes to fail.
In order to enable the horizontal curved trisection 313 of the mandril 31 can accurately reach the drawn-down position and described support position It puts, referring to Fig. 1, the transmission reset assembly further includes sliding rail 5, the sliding rail 5 is included vertically to extension and parallel setting In two ribs 51 of 100 madial wall of vertical shaft, the horizontal curved trisection 313 is vertically to being slidably mounted on two rib 51 Between.Two rib 51 can also be arranged to montant, be correspondingly arranged lead ring in horizontal curved trisection 313, the design of sliding rail 5 causes The arrival for supporting position is more reliable, ensure that manhole cover plate 13 become a fine day or light rain in the case of can remain off.
In order to will be by the product underwater drainage in the inner water tank 22, referring to Fig. 3, under described in the case of normal light rain Lid 23 is evenly equipped with leakage hole 231, the leakage hole 231 to by the underwater leakage in the inner water tank 22 to the outer water tank 21, Certainly, the leakage hole 231 can also be substituted by other structures, such as be caused in the opening end setting block reinforcement of the lower cover 23 There are certain drainage galleries, the setting of the leakage hole 231 when the lower cover 23 is closed to cause the lower cover 23 only in rainfall Mandril 31 can be driven when larger and then opens the manhole cover plate 13, and does not influence to arrange rainwater in the case of normal small rainfall Enter the outer water tank 21 and then be discharged into the vertical shaft 100.
In order to which the ponding in the outer water tank 21 is discharged into the vertical shaft 100, referring to Fig. 1,21 lower part of the outer water tank Equipped with tapping pipe 6, described 6 one end of tapping pipe is connected with the outer water tank 21, and the other end connects, and described with the vertical shaft 100 The cooperation of tapping pipe 6 is equipped at least one check-valves 61, and the setting of the check-valves 61 can flow backwards to avoid the sewage in vertical shaft 100 Return the outer water tank 21.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every in the present invention Inventive concept under, the equivalent structure transformation made using description of the invention and accompanying drawing content or directly/be used in it indirectly His relevant technical field is included in the scope of patent protection of the present invention.

Claims (9)

1. a kind of utilize hydraulic pressure automatic cover-turning device, for vertical shaft, which is characterized in that described to utilize hydraulic pressure automatic cover-turning device packet It includes:
Manhole cover assembly, the manhole cover plate mutually fitted including cover seat of manhole and with the cover seat of manhole shape, and the manhole cover plate have opposite set Two turning end put, two turning end are rotatably assorted with the cover seat of manhole, and the pivot center of the manhole cover plate is classified as Half plate and the second half plates, wherein, the first half plate can below the pivot axis to the cover seat of manhole, described the 2 half plates are limited on direction is rotated down by the cover seat of manhole;
Hydraulic power component, including outer water tank, inner water tank and aqueduct, the inner water tank is set on the inner cavity of the outer water tank Portion, and the lower port of the inner water tank is equipped with and is elastically mounted to the lower cover of the inner water tank, the aqueduct vertically to setting, And the aqueduct lower end is connected with the inner water tank, the aqueduct upper end is run through and stretches out the outer water tank upwards, described Aqueduct by rainwater importing the inner water tank;And
Reset assembly is driven, including mandril and return unit, the lower end of the mandril is fixedly connected with the lower cover, the mandril Upper end is adjacent to the first half plates setting, and the upper end of the mandril is connect with the first half plate by flexible connecting member, institute It states mandril and has to be driven downward drawn-down position by the lower cover and be reset to by the return unit and supported with the first half plate Support position, when being in the drawn-down position, the first half plate is pulled down by the flexible connecting member and is opened downwards, when It is in described when supporting position, the first half plate is supported so that institute in the mandril upper end upwards under the action of the return unit Manhole cover plate is stated to close and keep.
2. hydraulic pressure automatic cover-turning device is utilized as described in claim 1, which is characterized in that two turning end is two shafts, The cover seat of manhole is being equipped with two shaft holes with the two shafts corresponding position.
3. hydraulic pressure automatic cover-turning device is utilized as described in claim 1, which is characterized in that the second half plate outer edge is outside Extension is equipped with shirt rim plate, and the shirt rim plate convex is equipped with limited support, and the limited support is used to abut with the cover seat of manhole, To be limited when being rotated to the second half plate in downward direction.
4. hydraulic pressure automatic cover-turning device is utilized as described in claim 1, which is characterized in that the mandril is included vertically to prolonging The mandril stage casing of setting is stretched, the upper wall of the outer water tank is run through in the mandril stage casing, and the mandril stage casing is located at the outer water The part of box cavity is disposed adjacent with the inner water tank, and the extension of mandril stage casing lower end is equipped with first towards laterally upper side then court Upper extension is bent up trisection, and the upper end for being bent up trisection and the lower surface of the lower cover are detachably connected, the mandril Stage casing upper end is equipped with horizontal curved trisection towards the opposite side extension in transverse direction, and the horizontal curved trisection is running through the vertical shaft side It wall and extends to immediately below the first half plate, the horizontal curved trisection is connected with the first half plate by the flexible connecting member It connects.
5. hydraulic pressure automatic cover-turning device is utilized as claimed in claim 4, which is characterized in that the flexible connecting member is chain, One end of the chain is connect with the end of the horizontal curved trisection, and the back side of the other end and the first half plate detachably connects It connects.
6. hydraulic pressure automatic cover-turning device is utilized as claimed in claim 4, which is characterized in that the return unit is the horizontal curved Vertically to the resetting spring of setting, the lower end of the resetting spring is fixedly installed in the side of the vertical shaft for the downside of trisection Wall, upper end are fixedly connected with the downside of the horizontal curved trisection.
7. hydraulic pressure automatic cover-turning device is utilized as claimed in claim 4, which is characterized in that the transmission reset assembly further includes Sliding rail, the sliding rail are included vertically to two ribs for extending and being set to parallel the vertical shaft madial wall, the horizontal buckling Section is vertically to being slidably mounted between two rib.
8. hydraulic pressure automatic cover-turning device is utilized as described in claim 1, which is characterized in that the lower cover of the inner water tank is evenly equipped with Leakage hole, the leakage hole is to by the underwater leakage in the inner water tank to the outer water tank.
9. hydraulic pressure automatic cover-turning device is utilized as described in claim 1, which is characterized in that the outer water tank lower part, which is equipped with, to sluice Pipe, described tapping pipe one end are connected with the outer water tank, and the other end is connected with the vertical shaft, and tapping pipe cooperation is equipped with extremely A few check-valves.
CN201711458684.XA 2017-12-27 2017-12-27 Automatic cover turning device utilizing water pressure Expired - Fee Related CN108178114B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711458684.XA CN108178114B (en) 2017-12-27 2017-12-27 Automatic cover turning device utilizing water pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711458684.XA CN108178114B (en) 2017-12-27 2017-12-27 Automatic cover turning device utilizing water pressure

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CN108178114A true CN108178114A (en) 2018-06-19
CN108178114B CN108178114B (en) 2019-12-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424465A (en) * 2019-07-30 2019-11-08 浙江金棕榈建设有限公司 A kind of town road well lid

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071985A (en) * 1992-12-28 1993-05-12 单广旺 Automatic opening-and-closing gutter cover for rain-water-collecting with sealing function
JP2000212984A (en) * 1999-01-28 2000-08-02 Hiroshi Suzuki Manhole lid with air suction and exhaust device
CN2742035Y (en) * 2004-11-12 2005-11-23 杨家成 Automatic water drain type inspection manhole cover
CN201125393Y (en) * 2007-08-28 2008-10-01 倪树春 Automatic closed type manhole cover
CN202401545U (en) * 2012-02-02 2012-08-29 张卫 Lever-type floor drain
CN104234175A (en) * 2014-09-03 2014-12-24 东南大学 Inspection well self-switched by using buoyancy force
CN107268687A (en) * 2017-08-22 2017-10-20 中煤科工集团重庆研究院有限公司 Urban intelligent drainage inspection well cover

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071985A (en) * 1992-12-28 1993-05-12 单广旺 Automatic opening-and-closing gutter cover for rain-water-collecting with sealing function
JP2000212984A (en) * 1999-01-28 2000-08-02 Hiroshi Suzuki Manhole lid with air suction and exhaust device
CN2742035Y (en) * 2004-11-12 2005-11-23 杨家成 Automatic water drain type inspection manhole cover
CN201125393Y (en) * 2007-08-28 2008-10-01 倪树春 Automatic closed type manhole cover
CN202401545U (en) * 2012-02-02 2012-08-29 张卫 Lever-type floor drain
CN104234175A (en) * 2014-09-03 2014-12-24 东南大学 Inspection well self-switched by using buoyancy force
CN107268687A (en) * 2017-08-22 2017-10-20 中煤科工集团重庆研究院有限公司 Urban intelligent drainage inspection well cover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424465A (en) * 2019-07-30 2019-11-08 浙江金棕榈建设有限公司 A kind of town road well lid

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Granted publication date: 20191206