CN113022723B - Folding cat ladder semitrailer - Google Patents
Folding cat ladder semitrailer Download PDFInfo
- Publication number
- CN113022723B CN113022723B CN201911425584.6A CN201911425584A CN113022723B CN 113022723 B CN113022723 B CN 113022723B CN 201911425584 A CN201911425584 A CN 201911425584A CN 113022723 B CN113022723 B CN 113022723B
- Authority
- CN
- China
- Prior art keywords
- ladder
- section
- guardrail
- assembly
- channel steel
- 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.)
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Links
- 241000282326 Felis catus Species 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 244000261422 Lysimachia clethroides Species 0.000 claims description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000009194 climbing Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009193 crawling Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D53/00—Tractor-trailer combinations; Road trains
- B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
- B62D53/06—Semi-trailers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/007—Removable steps or ladders, e.g. foldable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/02—Retractable steps or ladders, e.g. movable under shock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
- B62D21/20—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17 trailer type, i.e. a frame specifically constructed for use in a non-powered vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Ladders (AREA)
Abstract
The invention discloses a folding type cat ladder semitrailer which comprises an upper cover assembly, a bottom framework assembly, a guardrail assembly and a cat ladder assembly, wherein the total components of the cat ladder are a cat ladder first section and a cat ladder second section, the upper cover assembly is arranged at the upper part of the bottom framework assembly, and the guardrail assembly is arranged at two sides of the bottom framework assembly.
Description
Technical Field
The invention relates to the technical field of semi-trailers, in particular to a folding type cat ladder semi-trailer.
Background
The low flat semi-trailer is widely applicable to various mechanical equipment, large articles, highway construction equipment, large tank bodies, power station equipment and transportation of various large steel materials, when mechanical equipment is assembled and disassembled, the engineering vehicle is large in size and weight, so that the engineering vehicle needs to be assembled and disassembled with the aid of a ladder stand, the ladder stand with the most used spring assisted ladder stand or movable ladder stand at present cannot be folded, in use, the labor intensity of workers is high, the safety is poor, meanwhile, the ladder stand is designed to be longer, and when the ladder stand is erected, the height of the engineering vehicle is high, and the trafficability of the vehicle is affected.
Therefore, the folding type crawling ladder semitrailer is simple in structure, reasonable in design, good in safety and capable of improving the use efficiency and reducing the labor intensity, and the folding type crawling ladder semitrailer is designed for overcoming the defects of the technology.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a folding type cat ladder semitrailer which has the advantages of simple structure, reasonable design, high use efficiency, good safety and labor intensity reduction.
The technical scheme adopted for solving the technical problems is as follows: the folding type cat ladder semitrailer comprises an upper cover assembly, a bottom framework assembly, a guardrail assembly, a cat ladder assembly and a tool box, wherein the upper cover assembly is arranged at the upper part of the bottom framework assembly, the guardrail assembly is arranged at two sides of the bottom framework assembly, and the tool box is arranged at the bottom of the bottom framework assembly;
The bottom framework assembly comprises traction pins, power goosenecks, goose neck cross braces, traction plates and main beams, front beams are arranged on two sides of the power goosenecks, channel steel and cross braces are connected between the front beams, the goose neck cross braces are arranged at the front ends of the power goosenecks, a goose neck reinforcing web at the tail of the power goosenecks is connected with a main beam front reinforcing plate at the front end of the main beam, a long cross beam is arranged at the tail of the main beam, an inclined support frame is connected to the tail of the main beam, the front section of the inclined support frame is of a horizontal structure, the rear section of the inclined support frame is of an inclined section, and a first oil cylinder fixing plate is fixed at the bottom end of the tail of the inclined support frame and connected with one end of a first hydraulic oil cylinder;
The upper cover assembly comprises a front beam frame, a rear beam frame, a protective cover, a front side beam and wing supports, wherein the protective cover is arranged on the front side of the front beam frame, a plurality of wing supports are arranged on the front beam frame at equal intervals, a bending plate is arranged in the middle of the front beam frame and between the two wing supports, the front beam frame and the rear beam frame are connected through a Z-shaped reinforcing plate, and two ends of the tail of the rear beam frame are hinged with two ends of a long cross beam;
the guardrail assembly comprises guardrails, a spring lock, guardrail fixing plates and guardrail hinges, wherein the guardrails are respectively fixed on two sides of the back beam frame through the guardrail fixing plates, guardrail doors are arranged on the guardrails, and the guardrail doors are connected with the guardrail body through the guardrail hinges;
The novel ladder comprises a ladder main component, wherein the ladder main component comprises a first section and a second section of the ladder, the first section of the ladder is arranged above the inclined support frame, a ladder beam is arranged on the first section of the ladder, the first ends of the ladder beam and the second section of the ladder are respectively hinged on a connecting shaft through lugs, the first ends of the first section of the ladder are movably connected with a ladder fixing plate arranged on the front section of the inclined support frame, two long channel steels are symmetrically arranged on the first section of the ladder in a central symmetry mode, a first supporting seat is respectively arranged on one side of each long channel steel, the first supporting seat is used for being connected with supporting feet vertical to the ground, a channel steel beam is connected between the long channel steels, a second supporting seat is arranged on the outer side of the channel steel beam, and a connecting shaft fixedly connected with a first hydraulic cylinder is arranged on the inner side of the channel steel beam;
The second section of the cat ladder is formed by interconnecting a middle cross brace, side cross braces, middle channel steel and side channel steel, the tail parts of the middle channel steel and the side channel steel are provided with slope surfaces, and a second hydraulic cylinder is connected between the second supporting seat and the second section of the cat ladder.
Further, a license plate is arranged in the middle of one side, connected with the first section of the ladder, of the second section of the ladder.
Further, a spring lock is arranged between the guardrail fixing plate and the guardrail, and the spring lock is connected with a lock nose arranged on the guardrail fixing plate for fastening.
Further, a traction plate is arranged at the bottom of the goose neck cross brace, traction pins are arranged on the traction plate, and a traction reinforcing plate is arranged between the goose neck cross braces.
Further, a reinforcing beam frame is arranged between the beams at two sides of the inclined section of the inclined support frame.
The beneficial effects of the invention are as follows:
1. According to the invention, the first section of the cat ladder and the second section of the cat ladder are controlled to move by the hydraulic oil cylinder, so that manual forced operation is not needed, the labor intensity is reduced, and the working efficiency is improved; the second section of the climbing ladder is hinged with the first section of the climbing ladder and then is folded at the bottom of the first section of the climbing ladder, and the second section of the climbing ladder is connected with the first section of the climbing ladder through the second hydraulic cylinder, so that the whole length of the climbing ladder can be prolonged, the space can be saved, and the risk in use is reduced; each mechanism is connected with each other through a plurality of channel steel and cross beams, so that the strength of the semitrailer is improved, and the semitrailer is not easy to deform.
Drawings
FIG. 1 is a schematic view of the bottom frame assembly of the present invention.
FIG. 2 is a schematic diagram of the connection structure of the bottom frame assembly and the upper cover assembly of the present invention.
Fig. 3 is a schematic view of a first section of the ladder of the present invention.
Fig. 4 is a schematic view of the second section of the ladder of the present invention.
FIG. 5 is a schematic view of the guardrail assembly of the present invention.
Fig. 6 is a bottom view of the overall structure of the present invention.
Fig. 7 is a front view of the overall structure of the present invention.
Reference numerals illustrate: 1-a goose neck cross brace; 2-a traction pin; 3-a traction plate; 4-powered gooseneck; 5-channel steel; 6-a main beam; 7-traction reinforcing plates; 8-cross braces; 9-a main beam front reinforcing plate; 10-goose neck reinforcing webs; 11-tilting a supporting frame; 12-an inclined section; 13-long cross beams; 14-reinforcing beam frames; 15-front beam frame; 16-a back beam frame; 17-a protective cover; 18-wing struts; 19-bending plates; 20-long channel steel; 21-a channel beam; 22-a second support base; 23-a first support base; 24-ear plate; 25-edge channel steel; 26-slope surface; 27-middle cross braces; 28-middle channel steel; 29-side cross braces; 30-license plate; 31-guard rail; 32-guard rail fixing plates; 33-guard rail door; 34-guardrail hinges; 35-spring catch; 36-connecting shaft; 37-ladder beam; 38-a tool box; 39-a first hydraulic cylinder; 40-a second hydraulic cylinder; 41-a bottom frame assembly; 42-an upper cover assembly; 43-guard rail assembly; 44-first section of ladder; 45-second section of ladder stand.
Detailed Description
The invention will be further illustrated with reference to specific examples, which are to be understood as illustrative only and are not intended to limit the scope of the invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
Referring to fig. 6, which is a bottom view of the whole structure of the present invention, and referring to fig. 7, which is a front view of the whole structure of the present invention, a folding type ladder semitrailer includes an upper cover assembly, a bottom frame assembly, a guardrail assembly, a ladder assembly, and a tool box 38, wherein the upper cover assembly is disposed on the upper portion of the bottom frame assembly, the guardrail assembly is disposed on two sides of the bottom frame assembly, the tool box 38 is disposed on the bottom of the bottom frame assembly, and the total components of the ladder are a first section of the ladder and a second section of the ladder.
Referring to fig. 1, a schematic diagram of a bottom skeleton assembly of the invention is shown, the bottom skeleton assembly comprises a traction pin 2, a power gooseneck 4, a goose neck cross brace 1, a traction plate 3 and a main beam 6, front beams are arranged on two sides of the power gooseneck 4, channel steel 5 and cross braces 8 are connected between the front beams, the front end of the power gooseneck 4 is provided with the goose neck cross brace 1, the bottom of the goose neck cross brace 1 is provided with the traction plate 3, the traction plate 3 is provided with the traction pin 2, a traction reinforcing plate 7 is arranged between the goose neck cross braces 1, a goose neck reinforcing web 10 at the tail of the power gooseneck 4 is connected with a main beam front reinforcing plate 9 at the front end of the main beam 6, a long cross beam 13 is arranged at the tail of the main beam 6, an inclined support frame 11 is connected at the tail of the main beam 6, the front section of the inclined support frame 11 is of a horizontal structure, the rear section of the inclined support frame 11 is an inclined section 12, two side beams of the inclined section 12 of the inclined support frame 11 are connected through a reinforcing beam frame 14, and a first oil cylinder fixing plate is fixed at the tail end of the inclined support frame 11.
Referring to fig. 2, a schematic diagram of a connection structure between a bottom skeleton assembly and an upper cover assembly of the present invention is shown, the upper cover assembly includes a front beam 15, a rear beam 16, a protective cover 17, a front side beam, and wing supports 18, the protective cover 17 is disposed on the front side of the front beam 15, a plurality of wing supports 18 are disposed on the front beam 15 at equal intervals, a bending plate 19 is disposed in the middle of the front beam 15, the bending plate 19 is disposed between two adjacent wing supports 18, the front beam 15 and the rear beam 16 are connected through a Z-type reinforcing plate, and two ends of the tail of the rear beam 16 are hinged with two ends of a long beam.
Referring to fig. 5, which is a schematic diagram of the guardrail assembly of the present invention, the guardrail assembly includes a guardrail 31, a spring lock 35, a guardrail fixing plate 32, and guardrail hinges 34, wherein the guardrail 31 is respectively fixed on two sides of the back beam frame through the guardrail fixing plate 32, a guardrail door 33 is provided on the guardrail 31, the guardrail door 33 is connected with the guardrail 31 body through the guardrail hinges 34, the spring lock 35 is provided between the guardrail fixing plate 32 and the guardrail 31, and the spring lock 35 is fastened with a lock nose provided on the guardrail fixing plate 32.
Referring to fig. 3, a first section of the ladder of the present invention is schematically shown, a first section of the ladder is disposed above the inclined support frame, a ladder beam 37 is disposed on the first section of the ladder, the front ends of the ladder beam 37 and the second section of the ladder are respectively hinged on a connecting shaft 36 through lugs, the ladder beam 37 is provided with lugs 24 hinged with the second section of the ladder, the lugs 24 at the front end of the first section of the ladder are movably connected with a ladder fixing plate disposed at the front section of the inclined support frame, two long groove steels 20 are disposed on the first section of the ladder in a central symmetry manner, a first support seat 23 is disposed on one side of each of the two long groove steels 20, the first support seat 23 is used for connecting support legs perpendicular to the ground, a channel beam 21 is connected between the long groove steels 20, a second support seat 22 is disposed on the outer side of the channel beam 21, and a fixed shaft fixedly connected with a first hydraulic cylinder 39 is disposed on the inner side of the channel beam 21.
Referring to fig. 4, a schematic diagram of a second section of the ladder of the present invention is provided, in the middle of one side of the second section of the ladder connected with the first section of the ladder, with a license plate 30, the second section of the ladder is formed by interconnecting a middle cross brace 27, an edge cross brace 29, a middle channel steel 28 and an edge channel steel 25, the tail parts of the middle channel steel 28 and the edge channel steel 25 are provided with a slope surface 26, and a second hydraulic cylinder 40 is connected between a second support seat 22 on a channel steel beam and the head end of the second section of the ladder.
When the invention is used, the first hydraulic cylinder is started to control the first section of the ladder to rotate upwards by a certain angle, and then the second hydraulic cylinder is started to enable the second section of the ladder in a folded state to rotate outwards until the upper surfaces of the first section of the ladder and the second section of the ladder are positioned on the same horizontal plane, and the first hydraulic cylinder is controlled to enable the first section of the ladder to start rotating downwards until the slope surface at the bottom of the second section of the ladder is level with the ground, so that the first section of the ladder and the second section of the ladder can be stretched for equipment to be transported to crawl.
Claims (2)
1. A foldable cat ladder semitrailer, its characterized in that: the tool box comprises an upper cover assembly, a bottom framework assembly, a guardrail assembly and a ladder stand assembly tool box, wherein the upper cover assembly is arranged at the upper part of the bottom framework assembly, the guardrail assembly is arranged at two sides of the bottom framework assembly, and the tool box is arranged at the bottom of the bottom framework assembly;
The bottom framework assembly comprises traction pins, power goosenecks, goose neck cross braces, traction plates and main beams, front beams are arranged on two sides of the power goosenecks, channel steel and cross braces are connected between the front beams, the goose neck cross braces are arranged at the front ends of the power goosenecks, the traction plates are arranged at the bottoms of the goose neck cross braces, the traction pins are arranged on the traction plates, traction reinforcing plates are arranged between the goose neck cross braces, goose neck reinforcing webs at the tail parts of the power goosenecks are connected with the front reinforcing plates of the main beams at the front ends of the main beams, long cross beams are arranged at the tail parts of the main beams, inclined support frames are connected to the tail parts of the main beams, the front sections of the inclined support frames are of horizontal structures, reinforcing beam frames are arranged between the side beams at the inclined sections of the inclined support frames, first oil cylinder fixing plates are fixed at the bottom ends of the tail parts of the inclined support frames, and the first oil cylinder fixing plates are connected with one ends of first hydraulic oil cylinders;
The upper cover assembly comprises a front beam frame, a rear beam frame, a protective cover, a front side beam and wing supports, wherein the protective cover is arranged on the front side of the front beam frame, a plurality of wing supports are arranged on the front beam frame at equal intervals, a bending plate is arranged in the middle of the front beam frame and between the two wing supports, the front beam frame and the rear beam frame are connected through a Z-shaped reinforcing plate, and two ends of the tail of the rear beam frame are hinged with two ends of a long cross beam;
the guardrail assembly comprises guardrails, a spring lock, guardrail fixing plates and guardrail hinges, wherein the guardrails are respectively fixed on two sides of the back beam frame through the guardrail fixing plates, guardrail doors are arranged on the guardrails and are connected with the guardrail body through the guardrail hinges, the spring lock is arranged between the guardrail fixing plates and the guardrails, and the spring lock is connected and fastened with a lock nose arranged on the guardrail fixing plates;
The novel ladder comprises a ladder main component, wherein the ladder main component comprises a first section and a second section of the ladder, the first section of the ladder is arranged above the inclined support frame, a ladder beam is arranged on the first section of the ladder, the first ends of the ladder beam and the second section of the ladder are respectively hinged on a connecting shaft through lugs, the first ends of the first section of the ladder are movably connected with a ladder fixing plate arranged on the front section of the inclined support frame, two long channel steels are symmetrically arranged on the first section of the ladder in a central symmetry mode, a first supporting seat is respectively arranged on one side of each long channel steel, the first supporting seat is used for being connected with supporting feet vertical to the ground, a channel steel beam is connected between the long channel steels, a second supporting seat is arranged on the outer side of the channel steel beam, and a connecting shaft fixedly connected with a first hydraulic cylinder is arranged on the inner side of the channel steel beam;
The second section of the ladder is formed by interconnecting a middle cross brace, side cross braces, middle channel steel and side channel steel, the tail parts of the middle channel steel and the side channel steel are provided with slope surfaces, and a second hydraulic cylinder is connected between a second supporting seat on a channel steel beam and the second section of the ladder.
2. The folding ladder semitrailer of claim 1, wherein: the middle of one side of the second section of the cat ladder, which is connected with the first section of the cat ladder, is provided with a license plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201911425584.6A CN113022723B (en) | 2019-12-24 | 2019-12-24 | Folding cat ladder semitrailer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911425584.6A CN113022723B (en) | 2019-12-24 | 2019-12-24 | Folding cat ladder semitrailer |
Publications (2)
Publication Number | Publication Date |
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CN113022723A CN113022723A (en) | 2021-06-25 |
CN113022723B true CN113022723B (en) | 2024-04-19 |
Family
ID=76458575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201911425584.6A Active CN113022723B (en) | 2019-12-24 | 2019-12-24 | Folding cat ladder semitrailer |
Country Status (1)
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CN (1) | CN113022723B (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0018460A1 (en) * | 1979-04-20 | 1980-11-12 | René Anglade | Collapsible ladder associated with a folding safety handrail for transport vehicles |
EP1176086A1 (en) * | 2000-07-25 | 2002-01-30 | General Trailers France | Frame with a reduced number of welds, bearer for such a chassis, and process for making such a bearer |
CN201849407U (en) * | 2010-08-15 | 2011-06-01 | 芜湖中集瑞江汽车有限公司 | Hydraulic lifting foldable ladder |
CN102616290A (en) * | 2011-01-27 | 2012-08-01 | 中集车辆(集团)有限公司 | Detachable skeleton vehicle |
DE102015101798A1 (en) * | 2015-02-09 | 2016-08-11 | Kögel Trailer GmbH & Co. KG | Frame for a semi-trailer, side member and method of manufacturing a frame |
EP3156279A1 (en) * | 2015-10-12 | 2017-04-19 | Schmitz Cargobull AG | Vehicle for the transport of transport goods |
CN209534901U (en) * | 2019-01-14 | 2019-10-25 | 山东嘉联工程机械制造有限公司 | A kind of semi-trailer climbing ladder guardrail |
CN209600626U (en) * | 2019-03-23 | 2019-11-08 | 梁山华岳专用汽车制造有限公司 | A kind of assembling light weight semi-mounted bassinet structure |
CN211494283U (en) * | 2019-12-24 | 2020-09-15 | 临沂市宇顺机械有限公司 | Folding ladder semi-trailer |
-
2019
- 2019-12-24 CN CN201911425584.6A patent/CN113022723B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0018460A1 (en) * | 1979-04-20 | 1980-11-12 | René Anglade | Collapsible ladder associated with a folding safety handrail for transport vehicles |
EP1176086A1 (en) * | 2000-07-25 | 2002-01-30 | General Trailers France | Frame with a reduced number of welds, bearer for such a chassis, and process for making such a bearer |
CN201849407U (en) * | 2010-08-15 | 2011-06-01 | 芜湖中集瑞江汽车有限公司 | Hydraulic lifting foldable ladder |
CN102616290A (en) * | 2011-01-27 | 2012-08-01 | 中集车辆(集团)有限公司 | Detachable skeleton vehicle |
DE102015101798A1 (en) * | 2015-02-09 | 2016-08-11 | Kögel Trailer GmbH & Co. KG | Frame for a semi-trailer, side member and method of manufacturing a frame |
EP3156279A1 (en) * | 2015-10-12 | 2017-04-19 | Schmitz Cargobull AG | Vehicle for the transport of transport goods |
CN209534901U (en) * | 2019-01-14 | 2019-10-25 | 山东嘉联工程机械制造有限公司 | A kind of semi-trailer climbing ladder guardrail |
CN209600626U (en) * | 2019-03-23 | 2019-11-08 | 梁山华岳专用汽车制造有限公司 | A kind of assembling light weight semi-mounted bassinet structure |
CN211494283U (en) * | 2019-12-24 | 2020-09-15 | 临沂市宇顺机械有限公司 | Folding ladder semi-trailer |
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CN113022723A (en) | 2021-06-25 |
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