CN209099367U - Emergency protection cage - Google Patents

Emergency protection cage Download PDF

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Publication number
CN209099367U
CN209099367U CN201821868190.9U CN201821868190U CN209099367U CN 209099367 U CN209099367 U CN 209099367U CN 201821868190 U CN201821868190 U CN 201821868190U CN 209099367 U CN209099367 U CN 209099367U
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China
Prior art keywords
cage
cage body
lid
cover
emergency
Prior art date
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Active
Application number
CN201821868190.9U
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Chinese (zh)
Inventor
王泽贵
黎亮
黄勇
杨继武
毛建东
何仁军
袁诗海
陈玉博
刘诚
宋君德
周正
尤琅
汪勇
曾晓芳
杜亮
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.)
Sichuan Electric Power Transmission And Transfer Construction Co Ltd
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
Original Assignee
Sichuan Electric Power Transmission And Transfer Construction Co Ltd
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
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.)
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Application filed by Sichuan Electric Power Transmission And Transfer Construction Co Ltd, State Grid Corp of China SGCC, State Grid Sichuan Electric Power Co Ltd filed Critical Sichuan Electric Power Transmission And Transfer Construction Co Ltd
Priority to CN201821868190.9U priority Critical patent/CN209099367U/en
Application granted granted Critical
Publication of CN209099367U publication Critical patent/CN209099367U/en
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Abstract

The utility model discloses emergency to protect cage, and bottom of foundation ditch cannot be carried out to dig deep operation by solving existing emergency escape cage, and cannot control cover body opening/closing by construction personnel to realize the problem of quickly transporting of spoir.The utility model includes cage body and lid, and the bottom of the cage body is uncovered structure, and the lid and cage body are hinged, cover-opening structure is set on the lid, the operating side of the cover-opening structure is located in cage body, and the lid includes two and half symmetrical lids, and described partly cover is all connected with cover-opening structure.The utility model has many advantages, such as installation, disassembly and convenient transportation, is convenient for spoir fast removal.

Description

Emergency protection cage
Technical field
The utility model relates to excavation of foundation pit technical field of safety protection, and in particular to emergency protection cage.
Background technique
As country shakes off poverty strategy release of assaulting fortified position, State Grid Corporation of China is in countries such as Aba Prefecture, Ganzi, Tibet Autonomous Region New round rural power grids upgrading and the power grid construction fight in western relative poverty area are also fired therewith, my company is poor at these Area assumes responsibility for Sichuan-Tibet networking project, networking project, Maerkang transmission project in hiding, next will also participate in the red source of Aba Prefecture and send The Engineering Project Constructions such as out, it may be said that power grid construction tasks in these areas can be more and more.Since these area surroundings are planted By especially fragility, it is to reduce to environment vegetation deterioration, designs often by work transmission line basic engineering at artificial digging pile base Plinth;But these regional geologies are very broken, even if taking retaining wall measure, there is also huge safety is hidden for foundation excavation Suffer from.
In order to solve the problems, such as that foreign body falling damages operator during foundation excavation, the prior art is devised Escape device, in patent CN207469258U, inventor assembles shape by the cylindrical cage body of setting and the buffering vertex of a cone Pedal bottom plate is set at protection cage and in bottom, protective net, the side wall of cage body are set between the top and the buffering vertex of a cone of cage body Setting operation gap, construction personnel can carry out excacation to the side wall of foundation pit in cage body, but this escape cage assembly In the presence of can not carry out digging deep operation to bottom, and top can not open, the problems such as can not transporting immediately for the spoir dug out.
Utility model content
The technical problem to be solved by the utility model is to existing emergency protection cage cannot carry out bottom of foundation ditch to dig deeply Operation, and cover body opening/closing cannot be controlled by construction personnel to realize quickly transporting for spoir.
The utility model provides the emergency protection cage to solve the above problems.
The utility model is achieved through the following technical solutions:
Emergency protection cage, including cage body and lid, the lid and the top of the cage body are hinged, the bottom of the cage body For uncovered structure.
The design principle of the utility model are as follows: the bottom of cage body is uncovered structure, and uncovered structure connects with foundation pit bottom surface always Touching, can be used tool and excavates to bottom of foundation ditch, and lid and cage body are hinged, can rotate to open along hinge joint Lid can open lid, spoir is transported outside cage body when needing to move spoir.
The utility model, which is preferably met an urgent need, protects cage, further includes cover-opening structure, described in one end connection of the cover-opening structure The operating side of lid, the cover-opening structure is located in the cage body, is may be implemented in this way in cage in-vivo procedures cover-opening structure, control The opening of lid facilitates construction personnel that spoir is quickly transported foundation pit according to situation is digged pit.
The utility model, which is preferably met an urgent need, protects cage, and the cover-opening structure includes that drawstring and setting are hinged with lid in cage body Locate the pulley that ipsilateral position is higher than lid, one end of the drawstring is connect with the lid, and the other end of the drawstring is wound on It on pulley and extends in the cage body, construction personnel pulls downward on drawstring in cage body, and drawstring generates lid by pulley Upward pulling force, thus opening cover, such construction personnel can voluntarily according to the heap situation of spoir in foundation pit open lid from And spoir is transported.
The utility model, which is preferably met an urgent need, protects cage, and the top of hollow branch pipe is arranged in the pulley, and the branch pipe is set Ipsilateral, the branch pipe and the cage body set on the outside of the top of the cage body and be located at the lid with the cage body hinged place Axis is parallel, and its vertical height is higher than the height of the lid, and the drawstring is wound on the pulley and passes through the branch pipe It extends downward into the cage body, on the one hand branch pipe plays a supporting role to pulley, vertical by setting branch pipe highly can be with Guarantee that the height of pulley is consistently higher than lid, pull open lid convenient for drawstring, on the other hand, branch pipe is hollow pipe, and drawstring is around cunning The branch pipe is penetrated after wheel vertically downward, and branch pipe is parallel cage body setting, such branch pipe plays orientation to drawstring.
The utility model, which is preferably met an urgent need, protects cage, and handle assembly is arranged in the intracorporal free end of cage that is located at of the drawstring, Fixing piece is set on the cage body inner sidewall, and the handle assembly can be fixed on fixing piece, and handle assembly is convenient for construction personnel Operation, and the regular hour is needed in spoir lifting process, the fixing piece that handle assembly is arranged can fix handle assembly, It keeps lid in the open state, when needing to close, handle assembly is removed from fixing piece, handle assembly can be in lid weight It is moved up under the action of power, lid rotates down realization along hinge joint and close because of gravity.
The utility model, which is preferably met an urgent need, protects cage, and the handle assembly includes support plate, pull ring, knob, steel wire, steel wire It restricts clamp and link, the wirerope sequentially passes through two steel wire clamps up and down, and there are wirerope on the steel wire clamp of top Ring at link, be used for connection stay cord, be connected by screw bolts the support plate being oppositely arranged, institute on the steel wire clamp of the lower section It states and pull ring and knob is set between support plate, the pull ring is located at knob top, and pull ring keeps drawing for being stuck on fixing piece Rope, which tenses, opens lid, and the operation that the knob is pulled down for holding is held on knob when needing to open lid Drawstring is pulled downward on, lid is opened by upward power, when the pull ring of handle assembly is moved down into the position of fixing piece, will be drawn Ring is stuck on the fixing piece of cage body side wall, at this point, handle assembly is clamped, lid is in the open state, and the hand of construction personnel can Other things are done to decontrol, and when needing to close lid, knob is pulled downward on, pull ring moves downward until being more than to fix When the lower section of part, it is displaced outwardly pull ring, at this point, pull ring is detached from fixing piece, lid is under the effect of gravity along hinged Point rotation is closed.
The utility model, which is preferably met an urgent need, protects cage, and the lid includes two and half symmetrical lids, two and half lids point With the top sides of the cage body along hinged and be separately connected a cover-opening structure, two and half lid combinations form entire lid, by It is set as symmetrical two halves fabricated structure in lid, compared to entire lid is pulled open, the power for pulling open two lids respectively is able to Point, manpower is saved, in addition in the case where spoir frame is less big, half of lid can be only opened, allow construction personnel station not Under half of the lid opened, transport spoir both may be implemented in this way, be also possible to prevent to fall foreign matter accidentally during transport spoir Injure construction personnel by a crashing object.
The utility model is preferably met an urgent need protection cage, and two and half cover and are respectively provided with hanging ring, and the drawstring is connect with hanging ring, hanging ring On the one hand it is convenient for fixed pulling rope, the later period is facilitated to uncap operation, another aspect, the hanging ring is conveniently hung in the transportational process of lid Dress.
The utility model, which is preferably met an urgent need, protects cage, and two and half lids are combined into dome structure, and dome structure has preferably anti- Impact.
The utility model is preferably met an urgent need protection cage, and the dome structure includes top plate and bottom plate, multiple through pipe and multiple latitudes Bar, the both ends of the latitude bar are separately connected the top plate and bottom plate, described along same axis parallelly distribute on and to be connected to institute through pipe It states on latitude bar, setting vertically connects the more short faggings through pipe simultaneously between the latitude bar, and the structure of such longitude and latitude distribution has Better impact resistance, and on the one hand the short fagging can increase the density of dome structure, keep its gap smaller, improve lid Protective capacities, on the other hand, the both ends of short fagging, which do not extend to connect with the top plate and bottom plate, to be reduced with material, alleviates lid The total weight of body.
The utility model, which is preferably met an urgent need, protects cage, and the cage body is spliced by multiple vertical packages.
The utility model is preferably met an urgent need protection cage, and the cage body includes upper cage and bottom of cage body, the upper cage and lower cage Body is detachably connected.
Since Substation construction place is remote, for the ease of transport, cage body is designed as multiple splicing components, it is only necessary to will be each Component is transported to scene, and then assembling uses.
The utility model, which is preferably met an urgent need, protects cage, and the cage body includes vertical spaced multiple bodies of rod, the adjacent body of rod On be connected and fixed by stull, advantageously ensure that the stability and compressive property of entire cage body structure in this way.
The utility model, which is preferably met an urgent need, protects cage, and locker is arranged on the side wall of the cage body, enters in construction personnel Before being constructed in cage body, it is intracorporal that the emergency materials such as Portable oxygen cylinder, mineral water, flashlight, intercom are put into cage In locker, emergency escape cage is buried accordingly even when collapsing in generation foundation pit, short-term existence can also be carried out, waiting is rescued It helps.
Preferably, the cage body material and cover materials are aluminium alloy, realize light-weight, intensity height.
The utility model has the advantage that
1. the lid of the utility model and cage body are hinged, and cage body bottom is uncovered structure, and foundation depth side may be implemented To excavation, and hinged lid convenient for open, facilitate and transport spoir outside foundation pit.
2. cover-opening structure is arranged on the lid of the utility model, and the operating side of cover-opening structure is located in cage body, conveniently applies Worker person oneself opens voluntarily the carrying that lid realizes spoir according to the spoir situation in hole.
3. the lid of the utility model is symmetrical two-half structure, construction personnel is in cage body by operation across branch pipe The drawstring being connect with lid the opening and closing of lid may be implemented, two halves lid is conserved the power uncapped.
4. the cage body and lid of the utility model are removable to be divided into multiple components, and mounts and dismounts conveniently, it is conducive to long distance From transport, meet the use of remote districts construction.
5. locker is arranged in the utility model on cage body side wall, Portable oxygen cylinder, mineral water, flashlight are stored in the inside The emergency materials such as cylinder, intercom also can guarantee the life security of construction personnel in foundation pit in the case where foundation pit collapses.
6. the utility model is made of aluminum alloy materials, light-weight, intensity is high.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the utility model cover body structure schematic diagram.
Fig. 3 is the portion the A-A structural schematic diagram of the utility model.
Fig. 4 is handle assembly schematic diagram shown in the direction B of the utility model.
Fig. 5 is the cover-opening structure schematic diagram of the utility model.
Fig. 6 is the structural schematic diagram of the lid opening state of the utility model embodiment three.
Label and corresponding parts title in attached drawing:
1- cage body, 10- upper cage, 11- bottom of cage body, the 100- body of rod, 101- stull, 2- lid, 20- top plate, 21- bottom plate, 22- long fagging, 23- are covered through pipe, the short fagging of 24-, 25- hanging ring, 200- half, 3- branch pipe, 4- drawstring, 5- handle assembly, 50- steel wire Rope clamp, 51- wirerope, 52- pull ring, 53- knob, 54- support plate, 55- link, 6- fixing piece, 7- locker, 8- pulley.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing, The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As Figure 1-Figure 5, emergency protection cage, including cage body 1 and lid 2, the top of the lid 2 and the cage body 1 Hingedly, the bottom of the cage body 1 is uncovered structure.
The cage body 1 includes vertical spaced multiple bodies of rod 100, is connected on the adjacent body of rod 100 by stull 101 solid It is fixed, the stability and compressive property of entire 1 structure of cage body are advantageously ensured that in this way.
The bottom of the cage body 1 is uncovered structure, and uncovered structure is contacted with foundation pit bottom surface always, and tool can be used to base Hole bottom is excavated, and lid 2 and cage body 1 are hinged, can rotate to open lid 2 along hinge joint, are needing to move When spoir, lid 2 can be opened, spoir is transported outside cage body 1.
Emergency protection cage further includes cover-opening structure, and one end of the cover-opening structure connects the lid 2, the cover-opening structure Operating side be located in the cage body 1, may be implemented to operate cover-opening structure in cage body 1 in this way, control lid 2 opening, side Just spoir is quickly transported foundation pit according to situation is digged pit by construction personnel.
The cover-opening structure includes drawstring 4 and cage body 1 and the ipsilateral position in 2 hinged place of lid is arranged in higher than lid 2 The top of hollow branch pipe 3 is arranged in pulley 8, the pulley 8, and the branch pipe 3 is arranged in 1 top outer of cage body and is located at The lid 2 is ipsilateral with 1 hinged place of cage body, and the branch pipe 3 is parallel with the axis of the cage body 1, and its vertical height Higher than the height of the lid 2, one end of the drawstring 4 is connect with the lid 2, and 4 other end of drawstring bypasses the cunning Wheel 8 simultaneously extends downward into the cage body 1 across the branch pipe 3, and construction personnel pulls downward on drawstring 4, drawstring 4 in cage body 1 Upward pulling force is generated to lid 2 by pulley 8, thus opening cover 2, such construction personnel can be voluntarily according to spoir in foundation pit Heap situation open lid 2 to transporting spoir, 3 one side of branch pipe plays a supporting role to pulley 8, passes through setting branch pipe 3 vertical height can guarantee that the height of pulley 8 is consistently higher than lid 2, pull open lid 2 convenient for drawstring 4, on the other hand, branch pipe 3 For hollow pipe, drawstring 4 penetrates the branch pipe 3 after bypassing pulley 8 vertically downward, and branch pipe 3 is that parallel cage body 1 is arranged, and is propped up in this way Pipe 3 plays orientation to drawstring 4.
Handle assembly 5 is arranged in the free end of the drawstring 4 being located in cage body 1, is arranged on 1 inner sidewall of cage body and fixes Part 6, the handle assembly 5 include support plate 54, pull ring 52, knob 53, wirerope 51, steel wire clamp 50 and link 55, institute Wirerope 51 is stated to be sequentially fixed at up and down in two steel wire clamps 50, on top steel wire clamp 50 there are 51 ring of wirerope at Link 55, be used for connection stay cord 4, be connected by screw bolts the support plate being oppositely arranged on the steel wire clamp 50 of the lower section 54, setting pull ring 52 and knob 53 between the support plate 54, the pull ring 52 are located at 53 top of knob, and pull ring 52 is for being stuck in It is described to shake hands 53 for holding convenient for construction personnel's operation, when needs are beaten to keep drawstring 4 to tense opening lid 2 on fixing piece 6 Uncap body 2 when, hold and pull downward on drawstring 4 on knob 53, lid 2 is opened by upward power, when the pull ring 52 of handle assembly 5 When being moved down into the position of fixing piece 6, pull ring 52 is stuck on the fixing piece 6 of 1 side wall of cage body, at this point, handle assembly 5 is by card Tightly, lid 2 is in the open state, and the hand of construction personnel, which can be decontroled, does other things, and when needing to close lid 2, Knob 53 is pulled downward on, pull ring 52 moves downward until when being more than the lower section of fixing piece 6, pull ring 52 is displaced outwardly, at this point, pull ring 52 detach from fixing piece 6, and lid 2 rotates along hinge joint close under the effect of gravity.
Embodiment 2
As Figure 1-Figure 5, the present embodiment the difference from embodiment 1 is that, the lid 2 includes symmetrical two Half lid 200, two and half lids 200 are combined into dome structure, and two and half lids 200 are hinged simultaneously with the top sides of the cage body 1 edge respectively It is separately connected a cover-opening structure, the combination of two and half lids 200 forms entire lid 2, and dome structure has better impact resistance, Since lid 2 is set as symmetrical two halves fabricated structure, compared to entire lid 2 is pulled open, the power for pulling open two lids 2 respectively is obtained To divide equally, manpower is saved, in addition in the case where spoir frame is less big, half of lid 2 can be only opened, construction personnel is allowed to stand Under half of the lid 2 being not switched on, transport spoir both may be implemented in this way, be also possible to prevent to fall accidentally during transport spoir Foreign matter injures construction personnel by a crashing object.
The dome structure includes top plate 20, bottom plate 21, multiple through pipe 23 and multiple latitude bars, and the both ends of the latitude bar are distinguished The top plate 20 and bottom plate 21 are connected, it is described along same axis parallelly distribute on and to be connected on the latitude bar, the latitude through pipe 23 Setting vertically connects the more short faggings 24 through pipe 23 simultaneously between bar, and the structure of such longitude and latitude distribution has better shock resistance Property, and 24 one side of short fagging can increase the density of dome structure, keep its gap smaller, improve the protection energy of lid 2 Power, on the other hand, the both ends of short fagging 24, which do not extend to connect with the top plate 20 and bottom plate 21, to be reduced with material, alleviates lid 2 total weight.
Hanging ring 25 is respectively provided on the top plate 20 of two and half lids 200, the drawstring 4 is connect with hanging ring 25, and hanging ring 25 is on the one hand Convenient for fixed pulling rope 4, the later period is facilitated to uncap operation, on the other hand, the hanging ring 25 is conveniently hung in the transportational process of lid 2 Dress.
Locker 7 is arranged on the side wall of the cage body 1 will just before construction personnel enters in cage body 1 and constructs It takes in the locker 7 that the emergency materials such as formula oxygen tank, mineral water, flashlight, intercom are put into cage body 1, accordingly even when sending out Raw foundation pit, which collapses, buries emergency escape cage, can also carry out short-term existence, wait for rescue.
1 material of cage body and 2 material of lid are aluminium alloy, realize light-weight, intensity height.
Embodiment 3
As shown in fig. 6, the present embodiment the difference from example 2 is that, the cage body 1 is each 1 meter high just by upper and lower two The upper cage 10 and bottom of cage body 11 of eight prisms are formed by connecting, and positive eight prism is formed by 4 parts assemblings.
The interconnection of the component is connected using bolt and nut, and flange is used between the upper cage 10 and bottom of cage body 11 It disk and is bolted.
Specific work process are as follows: by two and half lids 200,4 components of upper cage 10 and bottom of cage body 11 4 components and Other accessories such as locker 7 are transported to construction site, assemble the cage body 1 for protecting cage, locker 7, dome on ground, and will Associate connection bolt and pin are tightened in place;It, will using spoir elevator when excavation of foundation pit and retaining wall production reach 2m depth " emergency escape cage " is integrally sling and is put to base plate of foundation pit 21;Dome is opened, by " Portable oxygen cylinder, mineral water, flashlight The emergency materials such as cylinder, intercom " are put into the locker 7 in cage body 1, while the pick of foundation excavation, spade are put into hole It is interior, close dome;Start excavation of foundation pit work, when spoir reaches it is a certain amount of when, open dome, large bamboo or wicker basket is put by spoir elevator Bottom is cheated, spoir is packed into large bamboo or wicker basket, spoir is promoted to outside foundation pit using elevator, is then shut off dome, continues foundation pit and opens It digs;After the completion of excavation of foundation pit, " emergency escape cage " is proposed that hole is outer using spoir elevator.
"upper" described in the utility model, "lower", "vertical" " outside " "top" and "bottom" are with orientation shown in the drawings Subject to.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced It changes, improve, should be included within the scope of protection of this utility model.

Claims (10)

1. emergency protection cage, including cage body (1) and lid (2), which is characterized in that the top of the lid (2) and the cage body (1) Portion is hinged, and the bottom of the cage body (1) is uncovered structure.
2. emergency according to claim 1 protects cage, which is characterized in that it further include cover-opening structure, the cover-opening structure One end connects the lid (2), and the other end of the cover-opening structure is located in the cage body (1).
3. emergency according to claim 2 protects cage, which is characterized in that the cover-opening structure includes drawstring (4) and setting It is higher than the pulley (8) of lid (2), one end of the drawstring (4) and institute in cage body (1) and the ipsilateral position in lid (2) hinged place Lid (2) connection is stated, the other end of the drawstring (4) is wound on pulley (8) and extends in the cage body (1).
4. emergency according to claim 3 protects cage, which is characterized in that hollow branch pipe (3) are arranged in the pulley (8) Top, the branch pipe (3) setting is in the cage body (1) top outer and to be located at the lid (2) and the cage body (1) hinged That locates is ipsilateral, and the drawstring (4) is wound on pulley (8) and passes through the branch pipe (3) and extends downward into the cage body (1).
5. emergency according to claim 3 protects cage, which is characterized in that the drawstring (4) be located in cage body (1) from Handle assembly (5) are arranged by end, fixing piece (6) are set on cage body (1) inner sidewall, the handle assembly (5) can be fixed on On fixing piece (6).
6. emergency according to claim 1-5 protects cage, which is characterized in that the lid (2) includes mutually right Two and half lids (200) claimed, two and half lids (200) are hinged with the top sides of the cage body (1) edge respectively and are separately connected one Cover-opening structure.
7. emergency according to claim 6 protects cage, which is characterized in that two half lids (200) are combined into dome knot Structure.
8. -5 or 7 described in any item emergency protect cage according to claim 1, which is characterized in that the cage body (1) is by multiple vertical It is spliced to component.
9. -5 or 7 described in any item emergency protect cage according to claim 1, which is characterized in that the cage body (1) includes upper cage Body (10) and bottom of cage body (11), the upper cage (10) and bottom of cage body (11) are detachably connected.
10. -5 or 7 described in any item emergency protect cage according to claim 1, which is characterized in that the side wall of the cage body (1) Upper setting locker (7).
CN201821868190.9U 2018-11-13 2018-11-13 Emergency protection cage Active CN209099367U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821868190.9U CN209099367U (en) 2018-11-13 2018-11-13 Emergency protection cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821868190.9U CN209099367U (en) 2018-11-13 2018-11-13 Emergency protection cage

Publications (1)

Publication Number Publication Date
CN209099367U true CN209099367U (en) 2019-07-12

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ID=67159491

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Application Number Title Priority Date Filing Date
CN201821868190.9U Active CN209099367U (en) 2018-11-13 2018-11-13 Emergency protection cage

Country Status (1)

Country Link
CN (1) CN209099367U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110663410A (en) * 2019-11-13 2020-01-10 陈进辉 Multi-functional ecological planting building
CN113266164A (en) * 2021-05-18 2021-08-17 青海送变电工程有限公司 Deep foundation pit operation safety device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110663410A (en) * 2019-11-13 2020-01-10 陈进辉 Multi-functional ecological planting building
CN113266164A (en) * 2021-05-18 2021-08-17 青海送变电工程有限公司 Deep foundation pit operation safety device

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