CN217419707U - Interim escape canal - Google Patents
Interim escape canal Download PDFInfo
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- CN217419707U CN217419707U CN202221158139.5U CN202221158139U CN217419707U CN 217419707 U CN217419707 U CN 217419707U CN 202221158139 U CN202221158139 U CN 202221158139U CN 217419707 U CN217419707 U CN 217419707U
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Abstract
The application discloses a temporary drainage ditch, which comprises a plurality of U-shaped components spliced and laid in a soil body; the U-shaped component comprises a U-shaped main body, two extension plates fixedly connected to the top end of the U-shaped main body, and a first connecting piece and a second connecting piece fixedly connected to two ends of the bottom surface of the U-shaped main body; one end of the second connector extends out of the end part of the U-shaped main body, and the first connector and the second connector are inserted in the height direction of the U-shaped main body; when the first connecting piece and the second connecting piece of the adjacent U-shaped members are in inserted fit, the end parts of the adjacent U-shaped main bodies are contacted and butted; the ends of the adjacent U-shaped main bodies are respectively welded into a whole. The brick drainage ditch of prior art has been solved in this application and has had the complicated period of technology long, and resistance to deformation ability is poor, and the frost heaving fracture easily appears, and the poor problem of drainage effect has realized directly laying the U-shaped component, and adjacent U-shaped component can splice and weld as an organic whole, and whole construction period is short, and resistance to deformation and tensile strength are strong, effectively improve drainage effect.
Description
Technical Field
The utility model relates to a escape canal technical field especially relates to an interim escape canal.
Background
In the excavation and use processes of the foundation pit, the tensile strength and other mechanical indexes of the soil body on the side wall of the foundation pit are seriously reduced after the soil body on the side wall of the foundation pit meets water, the integral stability of the side wall of the slope is influenced, the collapse of the side wall of the foundation pit is possibly caused, major safety accidents are caused, and the progress, the manufacturing cost and the image of the whole project are greatly influenced. The success or failure of the water prevention and drainage measures at the top of the foundation pit is one of the key factors of the success or failure of the foundation pit supporting engineering. The water intercepting and draining system at the top of the foundation pit is an important component of foundation pit supporting engineering, and the drainage ditch is a main component of the water intercepting and draining system, so that the structural form and the construction quality of the drainage ditch are directly related to the safety and the stability of the foundation pit.
The conventional method of the existing foundation pit top drainage ditch is as follows: brick drainage ditch + waterproof mortar plastering (as shown in figure 1). The method comprises the steps of rolling and compacting original soil after foundation trench excavation is completed, then paving a lime-soil cushion layer 10, paving a fine aggregate concrete layer 101 on the lime-soil cushion layer 10, building brick walls 102 on two sides to a designed height after the strength of the fine aggregate concrete layer 101 meets requirements, then smearing a layer of waterproof mortar 103 inside a drainage ditch, and finally constructing a hardened concrete surface layer 104.
The brick drainage ditch has the problems of complex process, long construction period, large earthwork excavation amount, high manufacturing cost, poor deformation resistance, easiness in frost heaving, cracking and dislocation, poor drainage effect and the like.
SUMMERY OF THE UTILITY MODEL
This application is through providing an interim escape canal, it has the complicated period of time of technology to have solved among the prior art adoption brick escape canal, the big cost of earthwork volume is high, resistance to deformation ability is poor, frost heaving appears easily, the fracture, the fault fracture, the poor technical problem of drainage effect, direct U-shaped component has been laid, adjacent U-shaped component can splice and weld as an organic wholely, whole construction period is short, resistance to deformation and tensile strength are strong, avoid appearing frost heaving, reduce fracture and fault fracture, effectively improve drainage effect.
The application provides a temporary drainage ditch, which comprises a plurality of U-shaped components spliced and paved in a soil body; the U-shaped component comprises a U-shaped main body, two extension plates fixedly connected to the top end of the U-shaped main body, and a first connecting piece and a second connecting piece fixedly connected to two ends of the bottom surface of the U-shaped main body; one end of the second connector extends out of the end part of the U-shaped main body, and the first connector and the second connector are inserted in the height direction of the U-shaped main body; when the first connecting piece and the second connecting piece of the adjacent U-shaped members are in inserted fit, the end parts of the adjacent U-shaped main bodies are contacted and butted; the end parts of the adjacent U-shaped main bodies are respectively welded into a whole.
In a possible implementation manner, the temporary drainage ditch further comprises an ear plate and a fastener, wherein the ear plate is provided with a first mounting hole in a penetrating manner; the top surface of the epitaxial plate, which is close to the first connecting piece, is fixedly connected with the lug plate; the end part of the epitaxial plate, which is away from the lug plate, is provided with a second mounting hole in a through manner; when the first connecting piece and the second connecting piece of the adjacent U-shaped component are in inserted fit, the lug plates are pressed on the top surfaces of the adjacent extension plates, and the first mounting holes and the second mounting holes are aligned up and down; the fastener can pass first mounting hole and second mounting hole, the otic placode through fastener fixed connection is in adjacent the extension board.
In one possible implementation, the first connecting piece includes a T-shaped block, and the second connecting piece includes a fixed block; the T-shaped block and the fixed block are respectively and fixedly connected to the bottom surfaces of two ends of the U-shaped main body; one end of the fixing block extends out of the end part of the U-shaped main body, and a T-shaped groove is formed in the height direction of the U-shaped main body; the T-shaped blocks are matched with the adjacent T-shaped grooves and are in sliding connection.
In one possible implementation, the first connecting member includes a plurality of insertion rods, and the second connecting member includes a connecting block; the connecting block is fixedly connected to the bottom surface of the end part of the U-shaped main body, one end of the connecting block extends out of the end part of the U-shaped main body, and a plurality of insertion holes are formed in the height direction of the U-shaped main body; the plurality of the inserting rods are fixedly connected to the bottom surface of the end part of the U-shaped main body, which is far away from the connecting block; the inserting rods are respectively inserted into the adjacent inserting holes.
In a possible implementation manner, graded gravel is laid in the soil body, and the bottom surface of the U-shaped main body is laid on the graded gravel.
In a possible implementation manner, a hardening surface layer is laid on the top end of the soil body, and the bottom surface of the extension plate is laid on the hardening surface layer.
In one possible implementation manner, two sides of the U-shaped main body are provided with anti-rust layers.
One or more technical solutions provided in the present application have at least the following technical effects or advantages:
the method comprises the steps that a plurality of U-shaped components which are spliced and laid in the soil body are adopted; the U-shaped component comprises a U-shaped main body, two extension plates fixedly connected to the top end of the U-shaped main body, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are fixedly connected to two ends of the bottom surface of the U-shaped main body; one end of the second connection piece extends out of the end part of the U-shaped main body, and the first connection piece and the second connection piece can be inserted in the height direction of the U-shaped main body; when the first connecting piece and the second connecting piece of the adjacent U-shaped members are in inserted fit, the end parts of the adjacent U-shaped main bodies can be contacted and butted; finally, the ends of the adjacent U-shaped main bodies are respectively welded into a whole. During actual construction, a plurality of U-shaped components are sequentially laid in a soil body, then adjacent U-shaped components are spliced together, and because the first connecting piece and the second connecting piece are spliced along the height direction of the U-shaped main body, the U-shaped main bodies connected can be prevented from being separated along the length direction of the U-shaped main body through the splicing of the first connecting piece and the second connecting piece, so that the tensile capacity and the deformation resistance of the whole U-shaped components are improved, after the splicing of the adjacent U-shaped components is finished, connecting seams at the end parts of the adjacent U-shaped main bodies are welded into a whole, water is prevented from permeating into the connecting seams of the U-shaped main bodies, and effective drainage is performed through the top surface of the U-shaped main body; the technical problems that a brick drainage ditch adopted in the prior art is complex in process and long in construction period, the earthwork excavation amount is large, the manufacturing cost is high, the deformation resistance is poor, frost heaving, cracking and dislocation are easy to occur, and the drainage effect is poor are effectively solved, the direct laying of U-shaped members is realized, adjacent U-shaped members can be spliced and welded into a whole, the whole construction period is short, the deformation resistance and the tensile strength are high, the frost heaving is avoided, the cracking and dislocation are reduced, and the drainage effect is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a prior art gutter construction;
FIG. 2 is a top view of a U-shaped member with first and second connectors in a first configuration according to an embodiment of the present disclosure;
FIG. 3 is a top view of the U-shaped member of FIG. 2 prior to splicing;
FIG. 4 is a top plan view of the U-shaped member of FIG. 2 after splicing;
FIG. 5 is a side view of the U-shaped member of FIG. 2 prior to splicing;
FIG. 6 is a side view of the U-shaped member of FIG. 2 after splicing;
FIG. 7 is a top view of a U-shaped member of a second configuration of first and second connectors according to an embodiment of the present application;
FIG. 8 is a top plan view of the U-shaped member of FIG. 7 prior to splicing;
FIG. 9 is a top plan view of the U-shaped member of FIG. 7 after splicing;
FIG. 10 is a side view of the U-shaped member of FIG. 7 prior to splicing;
FIG. 11 is a side view of the U-shaped member of FIG. 7 after splicing;
FIG. 12 is a front view of a temporary drain provided in an embodiment of the present application;
FIG. 13 is a schematic structural view of a U-shaped body provided with a rust preventive layer according to an embodiment of the present application.
Reference numerals: 1-a U-shaped member; 11-a U-shaped body; 12-an epitaxial plate; 121-a second mounting hole; 2-a first connecting member; 21-a T-block; 22-a plunger; 3-a second connector; 31-fixing block; 311-T-shaped grooves; 32-connecting blocks; 321-a jack; 4-ear plate; 41-a first mounting hole; 5-a fastener; 6-graded sandstone; 7-hardening the surface layer; 8-an anti-rust layer; 9-soil body; 91-rainwater grate; 10-lime soil bedding; 101-fine stone concrete; 102-brick walls; 103-waterproof mortar; 104-hardened concrete facing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 2 to 12, the temporary drainage ditch provided by the embodiment of the application comprises a plurality of U-shaped members 1 spliced and laid in a soil body 9; the U-shaped member 1 comprises a U-shaped main body 11, two extension plates 12 fixedly connected to the top end of the U-shaped main body 11, and a first connecting piece 2 and a second connecting piece 3 fixedly connected to two ends of the bottom surface of the U-shaped main body 11; one end of the second connection extends out of the end part of the U-shaped main body 11, and the first connecting piece 2 and the second connecting piece 3 are inserted in the height direction of the U-shaped main body 11; when the first connecting piece 2 and the second connecting piece 3 of the adjacent U-shaped members 1 are in inserted fit, the end parts of the adjacent U-shaped main bodies 11 are contacted and butted; the ends of the adjacent U-shaped bodies 11 are welded together. In the embodiment of the application, the U-shaped main body 11 and the epitaxial plate 12 are integrally formed, the materials of the U-shaped main body 11 and the epitaxial plate 12 are all made of steel, the materials of the first connecting piece 2 and the second connecting piece 3 are made of steel, the first connecting piece 2 and the second connecting piece 3 are respectively welded on the bottom surfaces of the two ends of the U-shaped main body 11, in actual construction, the plurality of U-shaped members 1 are firstly placed in the soil 9, then the first connecting pieces 2 of the adjacent U-shaped members 1 are inserted into the corresponding second connecting pieces 3 along the vertical direction, splicing between the adjacent U-shaped members 1 is realized, after splicing, the connecting seams of the U-shaped main bodies 11 which are spliced together are welded, so that the connecting seams are completely filled, water is guaranteed not to permeate from the connecting seams when water is drained, and the connecting strength between the U-shaped members 1 is further enhanced.
Referring to fig. 2 to 12, the temporary drainage ditch provided in the embodiment of the present application further includes an ear plate 4 and a fastening member 5, wherein the ear plate 4 is provided with a first mounting hole 41 therethrough; the top surface of the extension plate 12 close to the first connecting piece 2 is fixedly connected with an ear plate 4; a second mounting hole 121 is formed through the end part of the extension plate 12, which is far away from the ear plate 4; when the first connecting piece 2 and the second connecting piece 3 of the adjacent U-shaped members 1 are in inserted fit, the lug plates 4 are pressed on the top surfaces of the adjacent extension plates 12, and the first mounting holes 41 and the second mounting holes 121 are aligned up and down; the fastening member 5 can pass through the first and second mounting holes 41 and 121, and the ear plate 4 is fixedly coupled to the adjacent extension plate 12 by the fastening member 5. Further set up otic placode 4 and fastener 5 in the embodiment of this application, otic placode 4 welds the top surface of the epitaxial plate 12 that is close to first connecting piece 2, make otic placode 4 and epitaxial plate 12 become an organic whole, the bolt is selected for use to fastener 5, it makes when the butt joint of adjacent U-shaped main part 11 is accomplished to peg graft the cooperation at first connecting piece 2 and second connecting piece 3, can the pressfitting at the top surface of adjacent epitaxial plate 12 through otic placode 4, and then pass first mounting hole 41 and second mounting hole 121 with the bolt, realize fixing otic placode 4 on adjacent epitaxial plate 12 through fastening bolt, finally just can be connected as an organic whole two epitaxial plates 12 through otic placode 4 and bolt, can resist the tearing force of U-shaped component 1 butt joint department, thereby effectively improve tensile strength and anti deformability.
Referring to fig. 2 to 6, the first connector 2 includes a T-shaped block 21, and the second connector 3 includes a fixing block 31; the T-shaped block 21 and the fixed block 31 are respectively fixedly connected to the bottom surfaces of two ends of the U-shaped main body 11; one end of the fixing block 31 extends out of the end part of the U-shaped main body 11, and a T-shaped groove 311 is formed along the height direction of the U-shaped main body 11; the T-shaped block 21 is fitted into the adjacent T-shaped slot 311 and is slidably connected thereto. In the embodiment of the application, the first structure of the first connecting piece 2 is a T-shaped block 21, the first structure of the second connecting piece 3 is a fixed block 31 provided with a T-shaped groove 311, the T-shaped block 21 and the fixed block 31 are respectively welded on the bottom surfaces of two ends of the U-shaped main body 11, when the adjacent two U-shaped bodies 11 are spliced, the U-shaped body 11 with the T-block 21 is raised, and then the T-block 21 is inserted into the T-shaped groove 311 from the top down, when T-block 21 is fully inserted into T-slot 311, the splice of adjacent U-shaped bodies 11 is complete (the inner top surfaces of the two U-shaped bodies 11 are flush), meanwhile, the ear plate 4 is pressed on the top surface of the adjacent extension plate 12, the matching mode of the T-shaped block 21 and the T-shaped groove 311 is arranged, the U-shaped main body 11 can resist tearing force along the length direction of the U-shaped main body 11 through the matching of the T-shaped blocks 21 and the T-shaped grooves 311, so that the tensile and deformation resistance of the spliced U-shaped main body 11 is effectively improved.
Referring to fig. 7 to 11, the first connecting member 2 includes a plurality of insertion rods 22, and the second connecting member 3 includes a connecting block 32; the connecting block 32 is fixedly connected to the bottom surface of the end part of the U-shaped main body 11, one end of the connecting block 32 extends out of the end part of the U-shaped main body 11, and a plurality of insertion holes 321 are formed along the height direction of the U-shaped main body 11; the plurality of insert rods 22 are fixedly connected to the bottom surface of the end part of the U-shaped main body 11, which is far away from the connecting block 32; the plurality of insertion rods 22 are respectively inserted into the plurality of insertion holes 321 adjacent to each other. The second structure of the first connecting member 2 in the embodiment of the present application is a plurality of insertion rods 22, and the second structure of the second connecting member 3 is a connecting block 32 provided with a plurality of insertion holes 321; the number of the inserting rods 22 and the inserting holes 321 is two, and can also be reasonably selected according to actual conditions, during actual setting, the top ends of the inserting rods 22 and the top surfaces of the connecting blocks 32 are respectively welded on the bottom surfaces of two ends of the U-shaped main body 11, when two adjacent U-shaped main bodies 11 are spliced, the U-shaped main body 11 with the inserting rods 22 is lifted, then the inserting rods 22 are inserted into the inserting holes 321 of the connecting blocks 32 from top to bottom, when the inserting rods 22 are completely inserted into the inserting holes 321, the adjacent U-shaped main bodies 11 are spliced (the inner top surfaces of the two U-shaped main bodies 11 are flush), meanwhile, the lug plates 4 are also pressed on the top surfaces of the adjacent extension plates 12, the matching mode of the inserting rods 22 and the inserting holes 321 is set, so that the U-shaped main bodies 11 can resist tearing force along the length direction of the U-shaped main bodies 11 through the matching of the inserting rods 22 and the inserting holes 321, and the lug plates 4 and the fastening pieces 5 can connect the adjacent extension plates 12 into a whole, can resist the tearing force along the length direction of the extension plate 12, thereby effectively improving the tensile and deformation resistance of the spliced U-shaped main body 11.
Referring to fig. 12, graded sand 6 is laid in the soil 9, and the bottom surface of the U-shaped body 11 is laid on the graded sand 6. The leveling function when laying the U-shaped main body 11 is achieved by arranging the graded sand 6 in the embodiment of the application.
Referring to fig. 12, a hardened surface layer 7 is laid on the top of the soil 9, and the bottom surface of the extension board 12 is laid on the hardened surface layer 7. In the embodiment of the present application, the hardened surface layer 7 is made of a cement concrete layer, in order to support and fix the extension plate 12, and the fastening member 5 is inserted into the hardened surface layer 7 after passing through the first mounting hole 41 and the second mounting hole 121, and is finally fixed to the hardened surface layer 7.
Referring to fig. 13, both sides of the U-shaped body 11 are provided with the rust preventive layer 8. In the embodiment of the present application, the antirust layer 8 is a paint coating layer, and the purpose of providing the antirust layer 8 is to prevent the U-shaped main body 11 from rusting, and to prolong the service life of the U-shaped main body 11.
The installation principle of this application embodiment provides a interim escape canal as follows:
firstly, the U-shaped main body 11 and the extension plates 12 are integrally formed, a plurality of U-shaped members 1 are placed in a soil body 9, the U-shaped members 1 with the first connecting pieces 2 are lifted, then the first connecting pieces 2 are inserted into the second connecting pieces 3 of the adjacent U-shaped members 1 from top to bottom until the adjacent U-shaped main bodies 11 are spliced when the first connecting pieces 2 are completely inserted into the second connecting pieces 3, at the moment, the inner top surfaces of the two U-shaped main bodies 11 are flush, the lug plates 4 are pressed on the top surfaces of the adjacent extension plates 12, the fastening pieces 5 penetrate through the first mounting holes 41 and the second mounting holes 121 and are fixed in the hardened surface layer 7, and finally the connecting seams of the adjacent U-shaped main bodies 11 are welded, so that the connecting seams are completely filled, water cannot permeate from the connecting seams when water is drained, and then the steps are repeated to sequentially lay other U-shaped members 1 in the soil body 9, eventually forming a temporary raceway for the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (7)
1. A temporary drainage ditch, characterized by comprising a plurality of U-shaped members (1) spliced and laid in the ground (9);
the U-shaped component (1) comprises a U-shaped main body (11), two extension plates (12) fixedly connected to the top end of the U-shaped main body (11), and a first connecting piece (2) and a second connecting piece (3) fixedly connected to two ends of the bottom surface of the U-shaped main body (11);
one end of the second connecting piece (3) extends out of the end part of the U-shaped main body (11), and the first connecting piece (2) and the second connecting piece (3) are inserted in the height direction of the U-shaped main body (11);
when the first connecting piece (2) and the second connecting piece (3) of the adjacent U-shaped members (1) are in inserted connection and matched, the end parts of the adjacent U-shaped main bodies (11) are contacted and butted;
the end parts of the adjacent U-shaped main bodies (11) are respectively welded into a whole.
2. The temporary drainage ditch according to claim 1, further comprising an ear plate (4) and a fastening member (5), wherein the ear plate (4) has a first mounting hole (41) formed therethrough;
the lug plate (4) is fixedly connected to the top surface, close to the first connecting piece (2), of the extension plate (12);
a second mounting hole (121) is formed in the end portion, away from the ear plate (4), of the extension plate (12) in a penetrating mode;
when the first connecting piece (2) and the second connecting piece (3) of the adjacent U-shaped component (1) are in inserted connection and matching, the lug plates (4) are pressed on the top surfaces of the adjacent extension plates (12), and the first mounting holes (41) and the second mounting holes (121) are aligned up and down;
the fastener (5) can penetrate through the first mounting hole (41) and the second mounting hole (121), and the lug plate (4) is fixedly connected to the adjacent extension plate (12) through the fastener (5).
3. A temporary drain according to claim 1 or 2, wherein the first connector (2) comprises a T-block (21) and the second connector (3) comprises a fixing block (31);
the T-shaped block (21) and the fixing block (31) are fixedly connected to the bottom surfaces of two ends of the U-shaped main body (11) respectively;
one end of the fixing block (31) extends out of the end part of the U-shaped main body (11), and a T-shaped groove (311) is formed in the height direction of the U-shaped main body (11);
the T-shaped blocks (21) are matched with the adjacent T-shaped grooves (311) and are connected in a sliding mode.
4. A temporary drain according to claim 1 or 2, wherein the first connection member (2) comprises a plurality of bayonet bars (22) and the second connection member (3) comprises a connection block (32);
the connecting block (32) is fixedly connected to the bottom surface of the end part of the U-shaped main body (11), one end of the connecting block (32) extends out of the end part of the U-shaped main body (11), and a plurality of insertion holes (321) are formed in the height direction of the U-shaped main body (11);
the inserting rods (22) are fixedly connected to the bottom surface of the end part of the U-shaped main body (11) departing from the connecting block (32);
the plurality of the insertion rods (22) are respectively inserted into the adjacent insertion holes (321).
5. A temporary drain according to claim 1 or 2, characterised in that graded sand (6) is laid in the body of the soil (9), and the bottom surface of the U-shaped body (11) is laid on the graded sand (6).
6. Temporary drain according to claim 1 or 2, wherein the top end of the soil body (9) is provided with a hardened surface layer (7), and the bottom surface of the extension plate (12) is provided with the hardened surface layer (7).
7. The temporary drain according to claim 1 or 2, wherein both sides of the U-shaped body (11) are provided with a rust-preventive layer (8).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202221158139.5U CN217419707U (en) | 2022-05-16 | 2022-05-16 | Interim escape canal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202221158139.5U CN217419707U (en) | 2022-05-16 | 2022-05-16 | Interim escape canal |
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CN217419707U true CN217419707U (en) | 2022-09-13 |
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CN202221158139.5U Active CN217419707U (en) | 2022-05-16 | 2022-05-16 | Interim escape canal |
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