CN114668592A - Rotary three-layer drawable stereoscopic stretcher - Google Patents
Rotary three-layer drawable stereoscopic stretcher Download PDFInfo
- Publication number
- CN114668592A CN114668592A CN202210328112.4A CN202210328112A CN114668592A CN 114668592 A CN114668592 A CN 114668592A CN 202210328112 A CN202210328112 A CN 202210328112A CN 114668592 A CN114668592 A CN 114668592A
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- stretcher
- column
- drawable
- layer
- rotary
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- 238000009434 installation Methods 0.000 claims abstract description 32
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 244000309464 bull Species 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/013—Stretchers foldable or collapsible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/02—Stretchers with wheels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/04—Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Invalid Beds And Related Equipment (AREA)
- Toys (AREA)
Abstract
The invention discloses a rotary three-layer drawable three-dimensional stretcher, which comprises a lower layer frame body, a middle frame body and a stretcher body, wherein the lower layer frame body is arranged inside the middle frame body, the lower layer frame body is connected with the middle frame body through a rotating shaft, the side parts of the lower layer frame body and the middle frame body are connected with a rotary gas spring, the bottom of the stretcher body is provided with a rotating rod, and one end of the rotating rod penetrates through the surface of the stretcher body; according to the invention, through the designed installation cylinder and the inner column, the installation cylinder is sleeved on the inner column, so that the hand-operated rod is separated from the rotating rod, the hand-operated rod drives the installation cylinder to rotate on the surface of the inner column when the hand-operated rod is touched by mistake to rotate in the transferring process, the rotating rod is not influenced, the transferring safety and stability of the invention are improved, through the designed synchronous column and synchronous groove, one end of the synchronous column is inserted into the synchronous groove under the pressing of the installation cylinder, the synchronous rotating connection of the installation cylinder and the inner column is realized, and the rotation regulation of the rotating rod through the hand-operated rod is realized.
Description
Technical Field
The invention belongs to the technical field of stretchers, and particularly relates to a rotary three-layer drawable three-dimensional stretcher.
Background
The rotary three-layer drawable three-dimensional stretcher is applied to a medical device for transferring an injured person in rescue, when in use, the rotary three-layer drawable three-dimensional stretcher is drawn out through a lower-layer frame body, one end of the rotary three-layer drawable three-dimensional stretcher is arranged in a vehicle body, then the stretcher body is in an inclined state through a rotating angle, then the stretcher body is pushed, the middle frame body is made to slide to the lower-layer frame body, the stretcher body is continuously pushed, then the stretcher body is pushed into a carriage in time, and rapid transfer is achieved.
But current three-layer pull three-dimensional stretcher of rotation type in use, it is rotatory to drive the bull stick through the hand pole of one end, and then drives the locking mechanism of one end through the bull stick and carry out the unblock, conveniently to the stretcher body pull of multilayer, current bull stick and hand pole formula as an organic whole installation are hindering the person in-process in the transportation, and the hand pole takes place the mistake easily and changes to lead to the bull stick rotatory, make the device unblock, cause the problem of transportation safety easily, we propose a three-layer pull three-dimensional stretcher of rotation type for this reason.
Disclosure of Invention
The invention aims to provide a rotary three-layer drawable stereoscopic stretcher, which solves the problems that when a wounded person is transported, a rotating rod for locking is easily rotated under the driving of the false rotation of a hand-operated rod, so that a locking mechanism of the stretcher is unlocked, and transportation safety accidents are easily caused.
In order to achieve the purpose, the invention provides the following technical scheme: a rotary three-layer drawable three-dimensional stretcher comprises a lower layer frame body, a middle frame body and a stretcher body, wherein the lower layer frame body is arranged inside the middle frame body, the lower layer frame body is connected with the middle frame body through a rotating shaft, the side parts of the lower layer frame body and the middle frame body are connected with a rotary air spring, the bottom of the stretcher body is provided with a rotating rod, one end of the rotating rod penetrates through the surface of the stretcher body, an inner column is fixed at one end of the rotating rod, an installation cylinder is sleeved on the outer wall of the inner column, a hand-cranking rod is fixed at the end part of the installation cylinder, a synchronization column is fixed inside the installation cylinder, a synchronization groove is formed in the surface of one end of the inner column, the installation cylinder and the synchronization column are designed, the hand-cranking rod is sleeved on the inner column through the installation cylinder, the rotation rod cannot be rotated under the rotation condition, and when the rotation is needed, the synchronization column is inserted into the synchronization groove to realize the synchronization rotation, one end of the synchronizing column extends into the synchronizing groove, a groove is formed in the center of the surface of the inner column, a spring is arranged in the groove, and the spring can exert an elastic action on the hand rocker through the designed spring to enable the spring to push the synchronizing column to be quickly separated from the synchronizing groove.
Preferably, the rotation side channel has been seted up to the lateral wall of inner prop, the lateral wall of side prop runs through and is fixed with the side prop, and through the side prop of design, the side prop card is inside rotating the side channel, and it is spacing to slide its installation section of thick bamboo, guarantees that it can not follow the separation on the inner prop, the one end of side prop extends to and rotates the side inslot portion.
Preferably, the inner cylinder is arranged in the spring and fixed on the end face of the groove, the supporting column penetrates through the inner cylinder, the spring is supported through the designed supporting column, the spring is prevented from being bent and losing elasticity, and the supporting column is fixed in the mounting cylinder.
Preferably, the end face of the synchronizing column is provided with a spherical groove, a ball is embedded in the spherical groove, and the end part lubricating effect is improved through the designed ball.
Preferably, the longitudinal section of the inner column is of an I-shaped structure, and the longitudinal section of the hand rocker is of an L-shaped structure.
Preferably, the central axes of the inner column, the mounting cylinder and the supporting column are superposed with each other, and the inner column is in clearance fit with the mounting cylinder.
Preferably, the both ends of the stretcher body all are fixed with the handle, the outer wall of handle is provided with anti-skidding book cover, and the end connection of anti-skidding book cover has the magic to paste the group, pastes the group through the anti-skidding book cover and magic of design, and the cover is overlapped on the handle is rolled up in the antiskid, avoids its transport hand smooth, pastes the group through the magic simultaneously and assembles, makes things convenient for the later stage to dismantle the change.
Preferably, the cross section of handle is U style of calligraphy structure, and passes through the fix with screw between the handle and the stretcher body, and the fix with screw through the design is convenient for the later stage to handle change.
Preferably, the stretcher body is provided with two handrail frames on the surface, and through the handrail frame of design, the person of its injure supports in transporting, increases its transportation security, and passes through welded fastening between handrail frame and the stretcher body.
Preferably, the bottom of lower floor's support body and stretcher body all is fixed with the landing leg, through the landing leg of design, supports the device and places, the bottom surface mounting of landing leg has the rubber pad.
Compared with the prior art, the invention has the beneficial effects that:
(1) through the designed installation cylinder and the inner column, the installation cylinder is sleeved on the inner column, so that the hand-operated rod is separated from the rotating rod, the hand-operated rod drives the installation cylinder to rotate on the surface of the inner column when the hand-operated rod is touched by mistake to rotate in the transferring process, the rotating rod cannot be influenced, the transferring safety and the transferring stability of the invention are improved, through the designed synchronization column and the synchronization groove, one end of the synchronization column is inserted into the synchronization groove under the pressing of the installation cylinder, the installation cylinder is synchronously and rotatably connected with the inner column, the rotation regulation of the rotating rod through the hand-operated rod is realized, through the designed spring, the spring exerts the elastic force on the installation cylinder without external force extrusion, so that the synchronization column is pushed to be separated from the synchronization groove, the influence on the use safety of the device due to the forgetting of the separation is avoided, through the designed side column and the rotation side groove, one end of the side column is arranged in the rotation side groove, so that the installation cylinder is rotatably installed on the inner column, make its both can not break away from, support post and inner tube through the design, realize supporting rectifying to the spring, avoid it to take place to incline.
(2) Set is pasted through the antiskid of design book cover and magic, and the antiskid is rolled up the cover suit and is on the handle, increases the coefficient of friction on handle surface, and then avoids in the transportation, the landing phenomenon appears between carrier hand and the handle, and the tip of the cover is rolled up through the magic simultaneously and pastes the group realization connection, and then the later stage of being convenient for is dismantled and is changed.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;
FIG. 3 is a partial sectional view of the structure of the present invention at A;
FIG. 4 is a schematic view of an assembly structure of the inner column, the inner cylinder and the synchronizing column according to the present invention;
FIG. 5 is a top view of the present invention;
FIG. 6 is an enlarged view of the invention at B in FIG. 5.
In the figure: 1. a lower layer frame body; 2. a middle frame body; 3. an anti-slip roll cover; 4. a handle; 5. a stretcher body; 6. a handrail; 7. a hand lever; 8. a support leg; 9. mounting the cylinder; 10. a side post; 11. an inner column; 12. a rotating rod; 13. a spring; 14. a groove; 15. an inner barrel; 16. a support post; 17. a synchronizing column; 18. a ball bearing; 19. a synchronization slot; 20. rotating the side groove; 21. a magic tape set; 22. the gas spring is rotated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 6, the present invention provides a technical solution: a rotary three-layer drawable three-dimensional stretcher comprises a lower layer frame body 1, a middle frame body 2 and a stretcher body 5, wherein the lower layer frame body 1 is arranged inside the middle frame body 2, the lower layer frame body 1 is connected with the middle frame body 2 through a rotating shaft, the lower layer frame body 1, the middle frame body 2 and the stretcher body 5 are designed, the three layers of drawable three-layer stretcher are assembled in a stacking mode, the stretcher body is quickly transported into a stretcher body through multi-step drawable, a rotary air spring 22 is connected to the side portions of the lower layer frame body 1 and the middle frame body 2, the lower layer frame body 1 and the middle frame body 2 are connected through the rotary air spring 22 and the rotating shaft through design, one end of the device can rotate at a certain angle, one end of the stretcher body is in an inclined state, the drawable three-layer stretcher is more conveniently drawn into the stretcher body, a rotating rod 12 is arranged at the bottom of the stretcher body 5, one end of a rotating rod 12 penetrates through the surface of the stretcher body 5, an inner column 11 is fixed at one end of the rotating rod 12, an installation cylinder 9 is sleeved on the outer wall of the inner column 11, a hand-operated rod 7 is fixed at the end of the installation cylinder 9, the installation cylinder 9 is sleeved on the inner column 11 through the designed installation cylinder 9 and the inner column 11, so that the hand-operated rod 7 is separated from the rotating rod 12, the hand-operated rod 7 drives the installation cylinder 9 to rotate on the surface of the inner column 11 when the hand-operated rod 7 rotates by mistake in the transferring process, the rotating rod 12 is not influenced, the transferring safety and stability of the stretcher are improved, a synchronizing column 17 is fixed inside the installation cylinder 9, a synchronizing groove 19 is formed in the surface of one end of the inner column 11, the synchronizing column 17 is pressed by the installation cylinder 9, one end of the synchronizing column 17 is inserted into the synchronizing groove 19, the synchronous rotating connection of the installation cylinder 9 and the inner column 11 is realized, the rotating adjustment of the rotating rod 12 through the hand-operated rod 7, inside synchronizing column 17's one end extends to synchronizing groove 19, the surperficial center department of interior post 11 sets up fluted 14, the inside of recess 14 is provided with spring 13, spring 13 through the design, spring 13 exerts the spring action to the installation section of thick bamboo 9 that does not have external force extrusion, and then promote synchronizing column 17 and separate from synchronizing groove 19, avoid it to forget the separation and influence the device safety in utilization, rotation side channel 20 has been seted up to the lateral wall of interior post 11, the lateral wall of side column 10 runs through and is fixed with side column 10, side column 10 and rotation side channel 20 through the design, inside rotation side channel 20 is arranged in to the one end of side column 10, thereby rotate installation section of thick bamboo 9 and install on interior post 11, make its both can not break away from, the one end of side column 10 extends to inside rotation side channel 20.
In this embodiment, preferably, an inner cylinder 15 is arranged inside the spring 13, the inner cylinder 15 is fixed on the end surface of the groove 14, a supporting column 16 penetrates through the inner cylinder 15, the supporting column 16 and the inner cylinder 15 are designed to support and correct the spring 13 and prevent the spring 13 from inclining, the supporting column 16 is fixed inside the mounting cylinder 9, a spherical groove is formed in the end surface of the synchronizing cylinder 17, a ball 18 is embedded inside the spherical groove, the ball 18 is embedded on the synchronizing cylinder 17 through the designed ball 18, the lubricity of the end portion of the synchronizing cylinder is increased, the friction resistance of the synchronizing cylinder is reduced, the longitudinal section of the inner cylinder 11 is of an i-shaped structure, the longitudinal section of the hand lever 7 is of an L-shaped structure, the central axes of the inner cylinder 11, the mounting cylinder 9 and the supporting column 16 coincide with each other, and the inner cylinder 11 and the mounting cylinder 9 are in clearance fit.
In this embodiment, it is preferred, the both ends of the stretcher body 5 all are fixed with handle 4, the outer wall of handle 4 is provided with anti-skidding book cover 3, and the end connection of anti-skidding book cover 3 has magic tape group 21, anti-skidding book cover 3 and magic tape group 21 through the design, 3 suits of anti-skidding book cover are on handle 4, increase the coefficient of friction on 4 surperficial handles, and then avoid in the transportation, the landing phenomenon appears between carrier hand and the handle 4, the tip of anti-skidding book cover 3 passes through magic tape group 21 simultaneously and realizes connecting, and then the later stage of being convenient for is dismantled and is changed.
In this embodiment, preferably, the cross section of the handle 4 is a U-shaped structure, and the handle 4 and the stretcher body 5 are fixed by screws, the surface of the stretcher body 5 is symmetrically provided with two handrail frames 6, the handrail frames 6 are designed to facilitate the support of the wounded, the transfer safety of the wounded is improved, the handrail frames 6 and the stretcher body 5 are fixed by welding, the bottom of the lower layer frame body 1 and the bottom of the stretcher body 5 are both fixed with the supporting legs 8, and the bottom surface of the supporting legs 8 is fixed with a rubber pad.
The working principle and the using process of the invention are as follows: when the invention is used, the rotating rod 12 needs to be driven to rotate by the hand-operated rod 7, so that the invention can be unlocked, the mounting cylinder 9 is pressed by the hand-operated rod 7, one end of the synchronous column 17 in the mounting cylinder 9 is inserted into the synchronous groove 19, at the moment, the synchronous rotation of the mounting cylinder 9 and the inner column 11 can be ensured, the rotating rod 12 is driven to rotate, after the unlocking or locking of the mounting cylinder is finished, the pressing on the mounting cylinder 9 is released, the spring 13 in a compressed state releases the elastic force, the mounting cylinder 9 is pushed to slide on the inner column 11, one end of the synchronous column 17 is separated from the synchronous groove 19, the rotating rod 12 is not driven to rotate when the hand-operated rod 7 is touched by mistake, and the use safety and the stability of the invention are improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a three-dimensional stretcher of rotation type three-layer pull, includes lower floor's support body (1), middle support body (2) and the stretcher body (5), lower floor's support body (1) sets up inside middle support body (2), and is connected through the pivot between lower floor's support body (1) and middle support body (2), the lateral part of lower floor's support body (1) and middle support body (2) is connected with rotatory air spring (22), the bottom of stretcher body (5) is provided with bull stick (12), its characterized in that: the one end of bull stick (12) runs through in the surface of the stretcher body (5), and the one end of bull stick (12) is fixed with interior post (11), the outer wall cover of interior post (11) is equipped with installation section of thick bamboo (9), the end fixing of installation section of thick bamboo (9) has hand pole (7), the inside of installation section of thick bamboo (9) is fixed with synchronizing column (17), synchronizing groove (19) have been seted up on the one end surface of interior post (11), the one end of synchronizing column (17) extends to inside synchronizing groove (19), the surperficial center department of interior post (11) sets up fluted (14), the inside of recess (14) is provided with spring (13).
2. The rotary three-layer drawable stereoscopic stretcher according to claim 1, wherein: the side wall of the inner column (11) is provided with a rotating side groove (20), the side wall of the side column (10) penetrates through and is fixed with the side column (10), and one end of the side column (10) extends to the inside of the rotating side groove (20).
3. The rotary three-layer drawable stereoscopic stretcher according to claim 1, wherein: an inner cylinder (15) is arranged inside the spring (13), the inner cylinder (15) is fixed on the end face of the groove (14), a supporting column (16) penetrates through the inner part of the inner cylinder (15), and the supporting column (16) is fixed inside the mounting cylinder (9).
4. The rotary three-layer drawable stereoscopic stretcher according to claim 1, wherein: the end face of the synchronous column (17) is provided with a spherical groove, and a ball (18) is embedded in the spherical groove.
5. The rotary three-layer drawable stereoscopic stretcher according to claim 2, wherein: the longitudinal section of the inner column (11) is of an I-shaped structure, and the longitudinal section of the hand rocker (7) is of an L-shaped structure.
6. The rotary three-layer drawable stereoscopic stretcher according to claim 5, wherein: the central axes of the inner column (11), the mounting cylinder (9) and the supporting column (16) are mutually overlapped, and the inner column (11) is in clearance fit with the mounting cylinder (9).
7. The rotary three-layer drawable stereoscopic stretcher according to claim 1, wherein: both ends of the stretcher body (5) are fixed with handles (4), the outer wall of each handle (4) is provided with an anti-skidding rolling sleeve (3), and the end part of each anti-skidding rolling sleeve (3) is connected with a magic tape set (21).
8. The rotary three-layer drawable stereoscopic stretcher of claim 7, wherein: the cross section of the handle (4) is of a U-shaped structure, and the handle (4) and the stretcher body (5) are fixed through screws.
9. The rotary three-layer drawable stereoscopic stretcher according to claim 1, wherein: the stretcher is characterized in that two handrail frames (6) are symmetrically arranged on the surface of the stretcher body (5), and the handrail frames (6) and the stretcher body (5) are fixed through welding.
10. The rotary three-layer drawable stereoscopic stretcher according to claim 1, wherein: the stretcher is characterized in that supporting legs (8) are fixed at the bottoms of the lower-layer frame body (1) and the stretcher body (5), and rubber pads are fixed on the surfaces of the bottoms of the supporting legs (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328112.4A CN114668592B (en) | 2022-03-31 | 2022-03-31 | Three-layer rotary drawable three-dimensional stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328112.4A CN114668592B (en) | 2022-03-31 | 2022-03-31 | Three-layer rotary drawable three-dimensional stretcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114668592A true CN114668592A (en) | 2022-06-28 |
| CN114668592B CN114668592B (en) | 2024-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210328112.4A Active CN114668592B (en) | 2022-03-31 | 2022-03-31 | Three-layer rotary drawable three-dimensional stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114668592B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB726352A (en) * | 1953-04-17 | 1955-03-16 | Segco Ltd | Folding stretcher |
| GB746487A (en) * | 1953-04-30 | 1956-03-14 | British United Shoe Machinery | Improvements in or relating to power presses |
| CN2367515Y (en) * | 1999-04-06 | 2000-03-08 | 马之荣 | Lifter for spare tyre of automobile |
| CN110142722A (en) * | 2019-05-27 | 2019-08-20 | 安徽黎搏装饰工程有限公司 | A kind of construction nut remover |
| CN110848299A (en) * | 2019-11-26 | 2020-02-28 | 六安丰恺尼机电科技有限公司 | Electric control expansion method of spring energy storage type expansion link |
| CN111053651A (en) * | 2019-12-24 | 2020-04-24 | 苏州江南航天机电工业有限公司 | Three-layer pull rotary stretcher support |
| CN112386404A (en) * | 2020-12-02 | 2021-02-23 | 山东晟宁康医疗用品有限公司 | Stretcher for medical first aid |
| CN215528180U (en) * | 2021-06-02 | 2022-01-14 | 徐州世威隆盛建设工程有限公司 | High-altitude positioning type PIV laser packaging structure |
-
2022
- 2022-03-31 CN CN202210328112.4A patent/CN114668592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB726352A (en) * | 1953-04-17 | 1955-03-16 | Segco Ltd | Folding stretcher |
| GB746487A (en) * | 1953-04-30 | 1956-03-14 | British United Shoe Machinery | Improvements in or relating to power presses |
| CN2367515Y (en) * | 1999-04-06 | 2000-03-08 | 马之荣 | Lifter for spare tyre of automobile |
| CN110142722A (en) * | 2019-05-27 | 2019-08-20 | 安徽黎搏装饰工程有限公司 | A kind of construction nut remover |
| CN110848299A (en) * | 2019-11-26 | 2020-02-28 | 六安丰恺尼机电科技有限公司 | Electric control expansion method of spring energy storage type expansion link |
| CN111053651A (en) * | 2019-12-24 | 2020-04-24 | 苏州江南航天机电工业有限公司 | Three-layer pull rotary stretcher support |
| CN112386404A (en) * | 2020-12-02 | 2021-02-23 | 山东晟宁康医疗用品有限公司 | Stretcher for medical first aid |
| CN215528180U (en) * | 2021-06-02 | 2022-01-14 | 徐州世威隆盛建设工程有限公司 | High-altitude positioning type PIV laser packaging structure |
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| Publication number | Publication date |
|---|---|
| CN114668592B (en) | 2024-02-09 |
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