CN114575738B - Tool for automobile inspection and maintenance - Google Patents
Tool for automobile inspection and maintenance Download PDFInfo
- Publication number
- CN114575738B CN114575738B CN202210197645.3A CN202210197645A CN114575738B CN 114575738 B CN114575738 B CN 114575738B CN 202210197645 A CN202210197645 A CN 202210197645A CN 114575738 B CN114575738 B CN 114575738B
- Authority
- CN
- China
- Prior art keywords
- center line
- bottom bracket
- rotation center
- bracket
- locking
- 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.)
- Active
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 10
- 238000012423 maintenance Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 38
- 230000008439 repair process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention provides a tool for automobile inspection and maintenance, which comprises: a bottom bracket extending in a front-rear direction; the wheel assembly is rotationally arranged at the bottom of the bottom bracket; the auxiliary assembly is rotationally arranged on the bottom bracket and can be unfolded and folded relative to the bottom bracket; the auxiliary assembly includes: the support plate, one end in the length direction of the support plate is rotatably arranged at the rear part of the bottom bracket around a rotation center line extending along the left-right direction; and one end part of the foldable support in the length direction is rotationally arranged at the front part of the bottom support around a rotation center line extending along the left-right direction, and the other end part is rotationally arranged at the other end part of the support flat plate which is not rotationally connected with the bottom support around the rotation center line extending along the left-right direction. The tool can meet the requirements of checking and maintaining parts and pipelines at the bottom of the automobile and the requirements of checking and maintaining parts and pipelines at the upper part of the automobile.
Description
Technical Field
The embodiment of the invention relates to the technical field of automobiles, in particular to a tool for automobile inspection and maintenance.
Background
When an automobile is inspected and maintained, not only are various parts and pipelines located at the bottom of the automobile required to be inspected and maintained, but also parts and pipelines located at the upper part of the automobile are often required to be inspected and maintained. When inspecting and repairing the upper part of the automobile, it is often difficult for an inspector to reach parts and pipelines located at the upper part of the automobile.
The existing tool can only meet the requirement that an overhaul worker inspects and repairs parts and pipelines at the bottom of an automobile, or can only meet the requirement that the overhaul worker inspects and repairs parts and pipelines at the upper part of the automobile.
Disclosure of Invention
The embodiment of the invention provides a tool for checking and maintaining an automobile, which is used for solving the problem that the existing tool cannot meet the requirement of checking and maintaining the bottom and the upper part of the automobile by an maintainer.
In order to solve the technical problems, the invention is realized as follows: a tooling for automotive inspection maintenance, the tooling comprising:
a bottom bracket extending in a front-rear direction;
a wheel assembly rotatably disposed at a bottom of the bottom bracket;
the auxiliary assembly is rotatably arranged on the bottom bracket and can be unfolded and folded relative to the bottom bracket;
the auxiliary assembly includes:
a support plate having one end in a longitudinal direction thereof rotatably provided at a rear portion of the bottom bracket about a rotation center line extending in a left-right direction;
the foldable bracket is rotatably arranged at the front part of the bottom bracket around a rotation center line extending along the left-right direction at one end part in the length direction, and the other end part is rotatably arranged at the other end part of the support flat plate which is not rotatably connected with the bottom bracket around the rotation center line extending along the left-right direction;
when the auxiliary assembly is in the unfolding state, the foldable bracket obliquely extends from front to back, and the supporting flat plate extends along the up-down direction; when the auxiliary assembly is in the folded state, the supporting flat plate and the bottom bracket are folded relatively, and the foldable bracket is folded between the supporting flat plate and the bottom bracket in the up-down direction.
Preferably, the foldable bracket comprises a first bracket body and a second bracket body, wherein one end part in the length direction of the first bracket body is rotationally arranged at the front part of the bottom bracket around a first rotation center line, one end part in the length direction of the second bracket body is rotationally arranged on the supporting flat plate around a second rotation center line, the other end part of the first bracket body and the other end part of the second bracket body are rotationally arranged together around a third rotation center line, and the first rotation center line, the second rotation center line and the third rotation center line extend along the left-right direction and are mutually parallel.
Further, when the auxiliary assembly is in the unfolded state, the first frame body and the second frame body extend obliquely from front to back, and the first frame body and the second frame body extend along the same length direction; when the auxiliary assembly is in the folded state, the first frame body and the second frame body are folded relatively in the up-down direction.
Further, the foldable support further comprises a folding pedal, the folding pedal can be relatively unfolded or relatively folded along the length extension direction of the folding pedal, one end part of the folding pedal in the length extension direction is rotatably arranged on the bottom support around the first rotation center line, the other end part of the folding pedal is rotatably arranged on the support flat plate around the second rotation center line, and when the auxiliary assembly is in the unfolded state, the folding pedal is relatively unfolded, and the folding pedal forms a treading support part for a user to tread; when the auxiliary assembly is in the folded state, the folding pedal is folded relatively.
Still further, the foldable stand further includes a first locking mechanism for locking the folding pedal in a relatively open state.
As a preferred embodiment, the foldable stand further comprises a second locking mechanism for locking the first stand body relative to the second stand body when the auxiliary assembly is in the unfolded state.
Further preferably, the second locking mechanism includes:
the first interface seat is fixedly arranged at the upper end part of the first frame body;
the second interface seat is fixedly arranged at the lower end part of the second frame body, and a locking groove extending along the left-right direction is formed by surrounding the first interface seat and the second interface seat;
a locking piece which is slidably provided in the locking groove in a longitudinal direction of the locking groove;
when the second locking mechanism is in a locking state, the locking piece is arranged in the locking groove in a sliding fit manner; when the second locking mechanism is in an unlocking state, the locking piece is separated from the locking groove.
Still further preferably, the locking member has a round bar shape extending in the left-right direction when the second locking mechanism is in the locked state.
Preferably, the wheel assembly comprises:
the front wheel assembly is rotationally arranged at the bottom front part of the bottom bracket;
a rear wheel assembly rotatably disposed at a bottom rear portion of the bottom bracket;
and the wheel locking mechanism is arranged on the rear wheel assembly and can lock the rear wheel assembly.
Preferably, when the auxiliary assembly is in the folded state, the length extension direction of the support plate is parallel to the length extension direction of the bottom bracket.
The tool disclosed by the invention can meet the requirements of an maintainer for checking and maintaining parts and pipelines at the bottom of the automobile and also can meet the requirements of the maintainer for checking and maintaining parts and pipelines at the upper part of the automobile.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic side view of an embodiment of a tooling in an expanded state of an auxiliary assembly;
FIG. 2 is a schematic side view of the tooling in the process of converting the auxiliary assembly from the unfolded state to the folded state;
FIG. 3 is a schematic side view of an embodiment of the tool of the present invention when the auxiliary assembly is in a folded state;
wherein:
1. a bottom bracket;
2. a wheel assembly; 21. a front wheel assembly; 22. a rear wheel assembly; 23. a wheel locking mechanism;
3. an auxiliary component; 31. a support plate; 32. a foldable stand; 321. a first frame body; 322. a second frame body; 323. folding the pedal; 324. a first locking mechanism; 325. a second locking mechanism; 325a, a first interface seat; 325b, a second interface seat; 325c, locking member;
a. a first rotation centerline; b. a second rotation center line; c. and a third rotation center line.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a tool for automobile inspection and maintenance, including:
a bottom bracket 1, the bottom bracket 1 extending in the front-rear direction;
the wheel assembly 2 is rotatably arranged at the bottom of the bottom bracket 1;
the auxiliary assembly 3 is rotatably arranged on the bottom bracket 1, and the auxiliary assembly 3 can be unfolded and folded relative to the bottom bracket 1;
the auxiliary assembly 3 comprises:
a support plate 31, one end of the support plate 31 in the longitudinal direction being rotatably provided at the rear of the bottom bracket 1 about a rotation center line extending in the left-right direction;
a foldable bracket 32, one end of the foldable bracket 32 in the length direction is rotatably provided at the front portion of the bottom bracket 1 about a rotation center line extending in the left-right direction, and the other end is rotatably provided at the other end of the support flat plate 31 which is not rotatably connected to the bottom bracket 1 about a rotation center line extending in the left-right direction;
when the auxiliary assembly 3 is in the unfolded state, the foldable stand 32 is obliquely extended from front to rear upward, and the support plate 31 is extended in the up-down direction; when the auxiliary assembly 3 is in a folded state, the support plate 31 is folded opposite to the bottom bracket 1, and the foldable bracket 32 is folded between the support plate 31 and the bottom bracket 1 in the up-down direction.
When it is necessary to inspect and repair parts and pipelines located at the bottom of the automobile, the auxiliary assembly 3 is adjusted to be in a folded state, and at this time, the support plate 31 constitutes a lying support portion for providing a lying support for the user, and after the user lies down, the user can be pushed to the bottom of the automobile by using the wheel assembly 2. When it is necessary to perform inspection and maintenance of the components and lines located at the upper portion of the automobile, the auxiliary assembly 3 is adjusted to be in an unfolded state, at which time the user can travel to a high place via the foldable bracket 32 extending obliquely upward from the front to the rear, conveniently completing the inspection and maintenance task.
In some embodiments of the present invention, optionally, the foldable stand 32 includes a first frame 321 and a second frame 322, one end portion in the length direction of the first frame 321 is rotatably disposed at the front portion of the bottom stand 1 around a first rotation center line a, one end portion in the length direction of the second frame 322 is rotatably disposed on the support flat plate 31 around a second rotation center line b, the other end portion of the first frame 321 and the other end portion of the second frame 322 are rotatably disposed together around a third rotation center line c, and the first rotation center line a, the second rotation center line b and the third rotation center line c all extend in the left-right direction and are parallel to each other.
In some embodiments of the present invention, optionally, when the auxiliary assembly 3 is in the unfolded state, the first frame 321 and the second frame 322 both extend obliquely from front to back, and the first frame 321 and the second frame 322 extend along the same length direction; when the auxiliary assembly 3 is in a folded state, the first frame 321 and the second frame 322 are folded relatively in the up-down direction.
In some embodiments of the present invention, optionally, the foldable stand 32 further includes a folding pedal 323, the folding pedal 323 can be relatively opened or relatively folded along the length extension direction thereof, one end portion of the folding pedal 323 in the length extension direction is rotatably disposed on the bottom stand 1 around the first rotation center line a, the other end portion of the folding pedal 323 is rotatably disposed on the support flat plate 31 around the second rotation center line b, when the auxiliary assembly 3 is in the unfolded state, the folding pedal 323 is relatively opened, and the folding pedal 323 forms a tread support portion for a user to tread; when the auxiliary assembly 3 is in the folded state, the folding pedal 323 is relatively folded.
In some embodiments of the present invention, optionally, when the folding pedal 323 is relatively opened, the folding pedal 323 forms a three-stage step, and a user can travel to a high place through the three-stage step, so as to conveniently complete the inspection and maintenance task; the user can also stay on one of them level step, is suitable for the height of specific spare part and pipeline of being checked and maintained, convenient operation.
In some embodiments of the present invention, the foldable stand 32 optionally further includes a first locking mechanism 324, the first locking mechanism 324 for locking the folding pedal 323 in a relatively open state.
In some embodiments of the invention, the first locking mechanism 324 optionally has three sets, with the three sets of first locking mechanisms 324 disposed on three steps, respectively. The specific structure of the first locking mechanism 324 may be an existing locking mechanism or a novel locking mechanism which is not disclosed, and the specific structure of the first locking mechanism 324 is not a protection gist of the present invention and is not described herein.
In some embodiments of the present invention, the foldable stand 32 optionally further comprises a second locking mechanism 325, the second locking mechanism 325 being used to lock the first frame 321 and the second frame 322 relative to each other when the auxiliary assembly 3 is in the unfolded state.
Referring to fig. 1, the second locking mechanism 325 includes:
the first interface holder 325a, the first interface holder 325a is fixedly disposed at the upper end of the first frame 321;
the second interface holder 325b, the second interface holder 325b is fixedly disposed at the lower end of the second frame 322, and the first interface holder 325a and the second interface holder 325b are surrounded to form a locking groove (not shown) extending in the left-right direction;
a locking piece 325c, the locking piece 325c being provided in the locking groove (not shown in the figure) in a sliding fit in a length direction of the locking groove (not shown in the figure);
when the second locking mechanism 325 is in the locked state, the locking piece 325c is slidably disposed in a locking groove (not shown in the drawings); when the second locking mechanism 325 is in the unlocked state, the locking piece 325c is disengaged from the locking groove (not shown).
In some embodiments of the present invention, alternatively, the first interface holder 325a is fixedly sleeved on the upper end portion of the first frame 321, the second interface holder 325b is fixedly sleeved on the lower end portion of the second frame 322, when the second locking mechanism 325 is in the locked state, the locking member 325c has a circular rod shape extending in the left-right direction, and the axis of the locking member 325c extends co-linearly with the third rotation axis c.
In some embodiments of the invention, optionally, the wheel assembly 2 comprises:
a front wheel assembly 21, the front wheel assembly 21 being rotatably provided at a bottom front portion of the bottom bracket 1;
a rear wheel assembly 22, the rear wheel assembly 22 being rotatably provided at a bottom rear portion of the bottom bracket 1;
the wheel lock mechanism 23, the wheel lock mechanism 23 is provided on the rear wheel assembly 22, and the wheel lock mechanism 23 can lock the rear wheel assembly 22. The specific structure of the wheel lock mechanism 23 may be a conventional lock mechanism or a novel lock mechanism that is not disclosed, and the specific structure of the wheel lock mechanism 23 is not a protective point of the present invention and will not be described in detail here.
In some embodiments of the invention, optionally, when the auxiliary assembly 3 is in the folded state, the length extension direction of the support plate 31 is parallel to the length extension direction of the bottom bracket 1. The above arrangement enables the support plate 31 to provide comfortable lying support for the user.
In summary, the tool disclosed by the invention can meet the requirements of an maintainer for checking and maintaining parts and pipelines at the bottom of the automobile, and also can meet the requirements of the maintainer for checking and maintaining parts and pipelines at the upper part of the automobile, and is simple in structure and convenient to use.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (6)
1. A frock for car inspection maintenance, its characterized in that: the tool comprises:
a bottom bracket extending in a front-rear direction;
a wheel assembly rotatably disposed at a bottom of the bottom bracket;
the auxiliary assembly is rotatably arranged on the bottom bracket and can be unfolded and folded relative to the bottom bracket;
the auxiliary assembly includes:
a support plate having one end in a longitudinal direction thereof rotatably provided at a rear portion of the bottom bracket about a rotation center line extending in a left-right direction;
the foldable bracket is rotatably arranged at the front part of the bottom bracket around a rotation center line extending along the left-right direction at one end part in the length direction, and the other end part is rotatably arranged at the other end part of the support flat plate which is not rotatably connected with the bottom bracket around the rotation center line extending along the left-right direction;
the foldable bracket comprises a first bracket body and a second bracket body, wherein one end part of the first bracket body in the length direction is rotationally arranged at the front part of the bottom bracket around a first rotation center line, and one end part of the second bracket body in the length direction is rotationally arranged on the support flat plate around a second rotation center line; the other end part of the first frame body and the other end part of the second frame body are rotationally arranged together around a third rotation center line, and the first rotation center line, the second rotation center line and the third rotation center line extend along the left-right direction and are mutually parallel;
when the auxiliary assembly is in the unfolding state, the foldable bracket obliquely extends from front to back, and the supporting flat plate extends along the up-down direction; when the auxiliary assembly is in the folded state, the supporting flat plate and the bottom bracket are folded relatively, and the foldable bracket is folded between the supporting flat plate and the bottom bracket in the up-down direction;
the foldable stand further comprises a folding pedal and a first locking mechanism for locking the folding pedal in a relatively open state;
the foldable stand further includes a second locking mechanism for locking the first stand body relative to the second stand body when the auxiliary assembly is in the deployed state;
the second locking mechanism includes:
the first interface seat is fixedly arranged at the upper end part of the first frame body;
the second interface seat is fixedly arranged at the lower end part of the second frame body, and a locking groove extending along the left-right direction is formed by surrounding the first interface seat and the second interface seat;
a locking piece which is slidably provided in the locking groove in a longitudinal direction of the locking groove;
when the second locking mechanism is in a locking state, the locking piece is arranged in the locking groove in a sliding fit manner; when the second locking mechanism is in an unlocking state, the locking piece is separated from the locking groove.
2. The tooling of claim 1, wherein: when the auxiliary assembly is in the unfolding state, the first frame body and the second frame body extend obliquely from front to back upwards, and the first frame body and the second frame body extend along the same length direction; when the auxiliary assembly is in the folded state, the first frame body and the second frame body are folded relatively in the up-down direction.
3. The tooling of claim 1, wherein: the folding pedal can be relatively unfolded or relatively folded along the length extension direction of the folding pedal, one end part of the folding pedal in the length extension direction is rotatably arranged on the bottom bracket around the first rotation center line, the other end part of the folding pedal is rotatably arranged on the support flat plate around the second rotation center line, and when the auxiliary assembly is in the unfolded state, the folding pedal is relatively unfolded, and the folding pedal forms a treading support part for a user to tread; when the auxiliary assembly is in the folded state, the folding pedal is folded relatively.
4. The tooling of claim 1, wherein: when the second locking mechanism is in a locking state, the locking piece is in a round bar shape extending along the left-right direction.
5. The tooling of claim 1, wherein: the wheel assembly includes:
the front wheel assembly is rotationally arranged at the bottom front part of the bottom bracket;
a rear wheel assembly rotatably disposed at a bottom rear portion of the bottom bracket;
and the wheel locking mechanism is arranged on the rear wheel assembly and can lock the rear wheel assembly.
6. The tooling of claim 1, wherein: when the auxiliary assembly is in the folded state, the length extending direction of the supporting flat plate is parallel to the length extending direction of the bottom bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210197645.3A CN114575738B (en) | 2022-03-02 | 2022-03-02 | Tool for automobile inspection and maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210197645.3A CN114575738B (en) | 2022-03-02 | 2022-03-02 | Tool for automobile inspection and maintenance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114575738A CN114575738A (en) | 2022-06-03 |
| CN114575738B true CN114575738B (en) | 2024-03-01 |
Family
ID=81772124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210197645.3A Active CN114575738B (en) | 2022-03-02 | 2022-03-02 | Tool for automobile inspection and maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114575738B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072955A (en) * | 1990-08-10 | 1991-12-17 | Holland John C | Mechanic's helper and step platform |
| US6105719A (en) * | 1998-11-05 | 2000-08-22 | Rel Products Inc. | User-configurable mechanics stool |
| JP2004197414A (en) * | 2002-12-18 | 2004-07-15 | Nakao:Kk | Lifting implement with tread bar |
| KR200356582Y1 (en) * | 2004-04-22 | 2004-07-19 | 주식회사 다양테크 | A portable folding stairs |
| CN101975019A (en) * | 2010-11-03 | 2011-02-16 | 国网运行有限公司宜昌超高压管理处 | Portable insulation ladder used for disconnecting link and grounding brake observing windows of HGIS (Hypid Gas Insulated Switchgear) |
| CN203891739U (en) * | 2014-05-26 | 2014-10-22 | 中国民用航空飞行学院 | Multifunctional herringbone ladder |
| CN105781398A (en) * | 2016-04-22 | 2016-07-20 | 王红 | Folding type climbing ladder |
| CN206304052U (en) * | 2016-08-16 | 2017-07-07 | 吉首大学 | A kind of Multifunctional rescue stretcher |
| CN206530281U (en) * | 2017-01-13 | 2017-09-29 | 华中农业大学 | A kind of foldable multifunctional ladder |
-
2022
- 2022-03-02 CN CN202210197645.3A patent/CN114575738B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072955A (en) * | 1990-08-10 | 1991-12-17 | Holland John C | Mechanic's helper and step platform |
| US6105719A (en) * | 1998-11-05 | 2000-08-22 | Rel Products Inc. | User-configurable mechanics stool |
| JP2004197414A (en) * | 2002-12-18 | 2004-07-15 | Nakao:Kk | Lifting implement with tread bar |
| KR200356582Y1 (en) * | 2004-04-22 | 2004-07-19 | 주식회사 다양테크 | A portable folding stairs |
| CN101975019A (en) * | 2010-11-03 | 2011-02-16 | 国网运行有限公司宜昌超高压管理处 | Portable insulation ladder used for disconnecting link and grounding brake observing windows of HGIS (Hypid Gas Insulated Switchgear) |
| CN203891739U (en) * | 2014-05-26 | 2014-10-22 | 中国民用航空飞行学院 | Multifunctional herringbone ladder |
| CN105781398A (en) * | 2016-04-22 | 2016-07-20 | 王红 | Folding type climbing ladder |
| CN206304052U (en) * | 2016-08-16 | 2017-07-07 | 吉首大学 | A kind of Multifunctional rescue stretcher |
| CN206530281U (en) * | 2017-01-13 | 2017-09-29 | 华中农业大学 | A kind of foldable multifunctional ladder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114575738A (en) | 2022-06-03 |
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