CN107199064A - A kind of height adjusts easily practical experimental bench - Google Patents
A kind of height adjusts easily practical experimental bench Download PDFInfo
- Publication number
- CN107199064A CN107199064A CN201710445300.4A CN201710445300A CN107199064A CN 107199064 A CN107199064 A CN 107199064A CN 201710445300 A CN201710445300 A CN 201710445300A CN 107199064 A CN107199064 A CN 107199064A
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- rotating shaft
- screw rod
- connecting rod
- auxiliary
- movable block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/02—Laboratory benches or tables; Fittings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
- B66F7/0666—Multiple scissor linkages vertically arranged
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
The present invention proposes a kind of height adjustment easily practical experimental bench, including base, height adjustment mechanism, platen and positioning auxiliary mechanism；Height adjustment mechanism includes lifting tube, position-limited rack and swivel becket, base periphery is provided with external screw thread, and lifting tube inner circumferential is provided with internal thread, and lifting tube is connected with base by external screw thread with screw-internal thread fit, swivel becket may be rotatably mounted at position-limited rack bottom, and swivel becket bottom is connected with lifting tube top；Platen may be rotatably mounted above position-limited rack, positioning auxiliary mechanism includes the first screw rod and the second screw rod, first screw rod and the second screw rod are movably mounted on position-limited rack and platen respectively, the first screw rod movement can be leant with swivel becket, the second screw rod movement can with position-limited rack mobile phase against.The present invention is easy to use, and platen is highly susceptible to regulation, and platen can be rotated as needed.
Description
Technical field
The present invention relates to experiment auxiliary equipment, and in particular to a kind of height adjusts easily practical experimental bench.
Background technology
The in vitro application of experimental bench is very wide, with the increasingly development of laboratory equipment, the requirement to experimental bench
More and more higher, the producer of productive experiment platform is productive profit and production efficiency, and all the experimental bench of level altitude model can be entered
Row batch production, however, itself height is different due to different users, its use habit is also not quite similar, with a batch of
The client that experimental bench is faced not necessarily can be satisfied with to the experimental bench of the height model, influence the use of user, therefore city
It is badly in need of a kind of testing stand for being easy to height to adjust on field.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of height adjustment easily practical experiment
Platform.
A kind of height adjustment easily practical experimental bench, including base, height adjustment mechanism, platen proposed by the present invention
And positioning auxiliary mechanism；
Height adjustment mechanism includes lifting tube, position-limited rack and swivel becket, and base periphery is provided with external screw thread, and lifting tube inner circumferential is set
There is internal thread, lifting tube is connected with base by external screw thread with screw-internal thread fit, swivel becket may be rotatably mounted at position-limited rack bottom,
Swivel becket bottom is connected with lifting tube top；
Platen may be rotatably mounted above position-limited rack, and positioning auxiliary mechanism includes the first screw rod and the second screw rod, the first spiral shell
Bar and the second screw rod are movably mounted on position-limited rack and platen respectively, and the movement of the first screw rod can lean with swivel becket, and second
Screw rod movement can with position-limited rack mobile phase against.
Preferably, in addition to multiple mobile auxiliary bodies；
Mobile auxiliary body includes locating piece, the 3rd screw rod and roller, and locating piece is arranged on base, and the 3rd screw rod is removable
Dynamic to be arranged on locating piece, roller is arranged on the 3rd screw rod bottom.
Preferably, the first rotating disk, the second rotating disk and the 3rd are separately installed with the first screw rod, the second screw rod and the 3rd screw rod
Rotating disk.
Preferably, in addition to protection mechanism；
Protection mechanism includes location-plate, extension board, magnetic part and magnetic absorption part, and extension board is arranged on the one of location-plate
Side, magnetic part is arranged on location-plate, and magnetic absorption part is arranged on position-limited rack, and magnetic part is adsorbed on magnetic absorption part.
Preferably, platen is provided with the auxiliary neck being caught in for location-plate.
Preferably, in addition to the first elevating mechanism, the second elevating mechanism and multiple carrying apparatus；
First elevating mechanism includes movable block, first time movable block, first rotating shaft, the second rotating shaft and multiple first on first
Auxiliary body；It is by near and far that movable block movable bar, which is arranged on movable block moving direction on position-limited rack bottom, first, on first
From the direction of lifting tube axis, first time movable block is movably mounted on base, and first time movable block moving direction is close
With the direction away from lifting tube axis, first rotating shaft may be rotatably mounted on base, and the second rotating shaft may be rotatably mounted under first
On movable block；First auxiliary body includes the 3rd rotating shaft, the 4th rotating shaft, first connecting rod, second connecting rod and the 5th rotating shaft, and first connects
Bar and second connecting rod upper end connect the 3rd rotating shaft and the 4th rotating shaft respectively, and the 5th rotating shaft first connecting rod and second that is rotatably connected connects
In the middle part of bar；First auxiliary body from top to bottom sets gradually, in the first adjacent auxiliary body of any two, positioned at lower section first
The 3rd rotating shaft and the 4th rotating shaft of auxiliary body are rotatably connected the second connecting rod and of the first auxiliary body above respectively
One connecting rod lower end, positioned at the first connecting rod of the auxiliary body of bottom first and the lower end of second connecting rod connect respectively the second rotating shaft and
First rotating shaft；
Second elevating mechanism includes movable block, second time movable block, the 6th rotating shaft, the 7th rotating shaft and multiple second on second
Auxiliary body；It is by near and far that movable block movable bar, which is arranged on movable block moving direction on position-limited rack bottom, second, on second
From the direction of lifting tube axis, second time movable block is movably mounted on base, and second time movable block moving direction is close
With the direction away from lifting tube axis, the 6th rotating shaft may be rotatably mounted on base, and the 7th rotating shaft may be rotatably mounted under second
On movable block；Second auxiliary body includes eighth-turn axle, the 9th rotating shaft, third connecting rod, fourth link and the tenth rotating shaft, and the 3rd connects
Bar and fourth link upper end connect eighth-turn axle and the 9th rotating shaft respectively, and the tenth rotating shaft is rotatably connected third connecting rod and the 4th company
In the middle part of bar；Second auxiliary body from top to bottom sets gradually, in the second adjacent auxiliary body of any two, positioned at lower section second
The eighth-turn axle of auxiliary body and the 9th rotating shaft are rotatably connected the fourth link and of the second auxiliary body above respectively
Three connecting rod lower ends, positioned at the third connecting rod of the auxiliary body of bottom second and the lower end of fourth link connect respectively the 7th rotating shaft and
6th rotating shaft；
First elevating mechanism and the second elevating mechanism are located at lifting tube axis opposite sides；Carrying apparatus and the 5th rotating shaft one
One correspondence, carrying apparatus and the tenth rotating shaft are corresponded；Carrying apparatus includes connection auxiliary block, two support boards and return unit,
Connect auxiliary block same can be arranged in connection auxiliary block provided with through hole, two support boards are slided by sliding through hole, and two
Individual support board first end by return unit be connected auxiliary block connect, two ends of support board second connect respectively the 5th rotating shaft with
Tenth rotating shaft.
The present invention is in use, by external screw thread and screw-internal thread fit, rotating lifting tube can realize that lifting tube is lifted, lifting
Cylinder lifting drives position-limited rack to lift by swivel becket, and position-limited rack lifting can just realize the lifting of platen, and user can pass through
Rotate the first screw rod position-limited rack and swivel becket are fixed together, user can be by platen and spacing by rotating the second screw rod
Frame is fixed together.The present invention is easy to use, and platen is highly susceptible to regulation, and platen can be rotated as needed.
Brief description of the drawings
Fig. 1 adjusts easily practical experimental bench structural representation for a kind of height proposed by the present invention.
Embodiment
Shown in reference picture 1, a kind of height adjustment easily practical experimental bench, including base 1, height proposed by the present invention
Governor motion, platen 3, positioning auxiliary mechanism, multiple mobile auxiliary bodies, protection mechanism,；
Height adjustment mechanism includes lifting tube 21, position-limited rack 22 and swivel becket 23, and the periphery of base 1 is provided with external screw thread, lifting
21 inner circumferentials of cylinder are provided with internal thread, and lifting tube 21 is connected with base 1 by external screw thread with screw-internal thread fit, and swivel becket 23 is rotatably pacified
Mounted in the bottom of position-limited rack 22, the bottom of swivel becket 23 is connected with the top of lifting tube 21；
Platen 3 may be rotatably mounted at the top of position-limited rack 22, and positioning auxiliary mechanism includes the first screw rod 41 and the second screw rod 42,
First screw rod 41 and the second screw rod 42 are movably mounted on position-limited rack 22 and platen 3 respectively, and the movement of the first screw rod 41 can be with turning
Rotating ring 23 leans, the second screw rod 42 movement can with the mobile phase of position-limited rack 22 against.
The present invention in use, by external screw thread and screw-internal thread fit, rotating lifting tube 21 can realize that lifting tube 21 is lifted,
The lifting of lifting tube 21 drives position-limited rack 22 to lift by swivel becket 23, and position-limited rack 22, which is lifted, can just realize the lifting of platen 3, make
Position-limited rack 22 and swivel becket 23 can be fixed together by user by rotating the first screw rod 41, and user is by rotating the second spiral shell
Platen 3 and position-limited rack 22 can be fixed together by bar 42.
In present embodiment, mobile auxiliary body includes locating piece 51, the 3rd screw rod 52 and roller 53, and locating piece 51 is installed
On base 1, the 3rd screw rod 52 is movably mounted on locating piece 51, and roller 53 is arranged on the bottom of the 3rd screw rod 52, by the
The rotation of three screw rods 52 can be realized to be respectively mounted on the lifting of roller 53, the first screw rod 41, the second screw rod 42 and the 3rd screw rod 52
There are the first rotating disk 411, the second rotating disk 421 and the 3rd rotating disk 521, utilize the first rotating disk 411, the second rotating disk 421 and the 3rd rotating disk
521 rotations can easily carry out the rotation of the first screw rod 41, the second screw rod 42 and the 3rd screw rod 52
In present embodiment, protection mechanism includes location-plate 61, extension board 62, magnetic part 63 and magnetic absorption part 64, prolongs
The side that plate 62 is arranged on location-plate 61 is stretched, magnetic part 63 is arranged on location-plate 61, and magnetic absorption part 64 is arranged on position-limited rack
On 22, magnetic part 63 is adsorbed on magnetic absorption part 64, when magnetic absorption part 64 and magnetic part 63 are attached together, extension board
62 can effectively reduce the possibility that experiment article drops on platen 3, and platen 3 is provided with the auxiliary neck being caught in for location-plate 61
31, when location-plate 61 is caught in auxiliary neck 31, extension board 62 can increase operator's operations area.
In present embodiment, in addition to the first elevating mechanism, the second elevating mechanism and multiple carrying apparatus；
First elevating mechanism includes movable block 71, first time movable block 72, first rotating shaft 73, the and of the second rotating shaft 74 on first
Multiple first auxiliary bodies；The movable bar of movable block 71 is arranged on movable block 71 on the bottom of position-limited rack 22, first and moved on first
Direction is direction close and away from the axis of lifting tube 21, and first time movable block 72 is movably mounted on base 1, and first moves down
The moving direction of motion block 72 is direction close and away from the axis of lifting tube 21, and first rotating shaft 73 may be rotatably mounted on base 1, the
Two rotating shafts 74 may be rotatably mounted on first time movable block 72；First auxiliary body include the 3rd rotating shaft 751, the 4th rotating shaft 752,
First connecting rod 753, the rotating shaft 755 of second connecting rod 754 and the 5th, first connecting rod 753 and the upper end of second connecting rod 754 connect the 3rd respectively
The rotating shaft 752 of rotating shaft 751 and the 4th, the 5th rotating shaft 755 is rotatably connected in the middle part of first connecting rod 753 and second connecting rod 754；First is auxiliary
Mechanism is helped from top to bottom to set gradually, in the first adjacent auxiliary body of any two, positioned at the of the auxiliary body of lower section first
Three rotating shafts 751 and the 4th rotating shaft 752 be rotatably connected respectively the first auxiliary body above second connecting rod 754 and first connect
The lower end of bar 753, second is connected positioned at the first connecting rod 753 of the auxiliary body of bottom first and the lower end of second connecting rod 754 respectively
Rotating shaft 74 and first rotating shaft 73；
Second elevating mechanism includes movable block 81, second time movable block 82, the 6th rotating shaft 83, the and of the 7th rotating shaft 84 on second
Multiple second auxiliary bodies；The movable bar of movable block 81 is arranged on movable block 81 on the bottom of position-limited rack 22, second and moved on second
Direction is direction close and away from the axis of lifting tube 21, and second time movable block 82 is movably mounted on base 1, and second moves down
The moving direction of motion block 82 is direction close and away from the axis of lifting tube 21, and the 6th rotating shaft 83 may be rotatably mounted on base 1, the
Seven rotating shafts 84 may be rotatably mounted on second time movable block 82；Second auxiliary body include eighth-turn axle 851, the 9th rotating shaft 852,
Third connecting rod 853, the rotating shaft 855 of fourth link 854 and the tenth, third connecting rod 853 and the upper end of fourth link 854 connect the 8th respectively
The rotating shaft 852 of rotating shaft 851 and the 9th, the tenth rotating shaft 855 is rotatably connected in the middle part of third connecting rod 853 and fourth link 854；Second is auxiliary
Mechanism is helped from top to bottom to set gradually, in the second adjacent auxiliary body of any two, positioned at the of the auxiliary body of lower section second
The rotating shaft 852 of eighth-turn axle 851 and the 9th is rotatably connected the company of fourth link 854 and the 3rd of the second auxiliary body above respectively
The lower end of bar 853, the 7th is connected positioned at the third connecting rod 853 of the auxiliary body of bottom second and the lower end of fourth link 854 respectively
The rotating shaft 83 of rotating shaft 84 and the 6th；
First elevating mechanism and the second elevating mechanism are located at the axis opposite sides of lifting tube 21；Carrying apparatus and the 5th rotating shaft
755 are corresponded, and carrying apparatus is corresponded with the tenth rotating shaft 855；Carrying apparatus includes connection auxiliary block 91, two support boards
92 and return unit, connection auxiliary block 91 is provided with sliding through hole, and two support boards 92 can be with being arranged on by sliding through hole
Connect in auxiliary block 91, two first ends of support board 92 are connected by return unit with being connected auxiliary block 91, two support boards 92
Second end connects the 5th rotating shaft 755 and the tenth rotating shaft respectively.
First elevating mechanism and the second elevating mechanism can be deformed upon with the lifting of position-limited rack 22, and material is placed on
On support board 92, the distance between adjacent carrying apparatus of any two can be with the change of storage space volume inside the present invention
And change, and the first elevating mechanism and the second elevating mechanism can improve the stability of the lifting of position-limited rack 22.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of height adjusts easily practical experimental bench, it is characterised in that：Including base (1), height adjustment mechanism, platen
And positioning auxiliary mechanism (3)；
Height adjustment mechanism includes lifting tube (21), position-limited rack (22) and swivel becket (23), and base (1) periphery is provided with external screw thread,
Lifting tube (21) inner circumferential is provided with internal thread, and lifting tube (21) is connected with base (1) by external screw thread with screw-internal thread fit, swivel becket
(23) position-limited rack (22) bottom is may be rotatably mounted at, swivel becket (23) bottom is connected with lifting tube (21) top；
Platen (3) may be rotatably mounted above position-limited rack (22), and positioning auxiliary mechanism includes the first screw rod (41) and the second screw rod
(42), the first screw rod (41) and the second screw rod (42) are movably mounted on position-limited rack (22) and platen (3) respectively, the first screw rod
(41) movement can lean with swivel becket (23), the second screw rod (42) movement can with position-limited rack (22) mobile phase against.
2. height according to claim 1 adjusts easily practical experimental bench, it is characterised in that：Also include multiple movements
Auxiliary body；
Mobile auxiliary body includes locating piece (51), the 3rd screw rod (52) and roller (53), and locating piece (51) is arranged on base (1)
On, the 3rd screw rod (52) is movably mounted on locating piece (51), and roller (53) is arranged on the 3rd screw rod (52) bottom.
3. height according to claim 2 adjusts easily practical experimental bench, it is characterised in that：First screw rod (41),
The first rotating disk (411), the second rotating disk (421) and the 3rd rotating disk are separately installed with second screw rod (42) and the 3rd screw rod (52)
(521)。
4. height according to claim 1 adjusts easily practical experimental bench, it is characterised in that：Also include protection machine
Structure；
Protection mechanism includes location-plate (61), extension board (62), magnetic part (63) and magnetic absorption part (64), extension board (62) peace
Side mounted in location-plate (61), magnetic part (63) is arranged on location-plate (61), and magnetic absorption part (64) is arranged on position-limited rack
(22) on, magnetic part (63) is adsorbed on magnetic absorption part (64).
5. height according to claim 4 adjusts easily practical experimental bench, it is characterised in that：Platen (3) is provided with
The auxiliary neck (31) being caught in for location-plate (61).
6. height according to claim 1 adjusts easily practical experimental bench, it is characterised in that：Also include the first lifting
Mechanism, the second elevating mechanism and multiple carrying apparatus；
First elevating mechanism includes movable block (71), first time movable block (72), first rotating shaft (73), the second rotating shaft on first
And multiple first auxiliary bodies (74)；Movable block (71) movable bar is arranged on position-limited rack (22) bottom on first, and first moves up
Motion block (71) moving direction is direction close and away from lifting tube (21) axis, and first time movable block (72) is movably mounted to
On base (1), first time movable block (72) moving direction is close to and away from the direction of lifting tube (21) axis, first rotating shaft
(73) it may be rotatably mounted on base (1), the second rotating shaft (74) may be rotatably mounted on first time movable block (72)；First auxiliary
Mechanism includes the 3rd rotating shaft (751), the 4th rotating shaft (752), first connecting rod (753), second connecting rod (754) and the 5th rotating shaft
(755), first connecting rod (753) and second connecting rod (754) upper end connect the 3rd rotating shaft (751) and the 4th rotating shaft (752) respectively, the
Five rotating shafts (755) are rotatably connected in the middle part of first connecting rod (753) and second connecting rod (754)；First auxiliary body from top to bottom according to
It is secondary to set, in the first adjacent auxiliary body of any two, the 3rd rotating shaft (751) positioned at the auxiliary body of lower section first and the 4th
Rotating shaft (752) is rotatably connected under the second connecting rod (754) and first connecting rod (753) of the first auxiliary body above respectively
End, the second rotating shaft is connected positioned at the first connecting rod (753) of the auxiliary body of bottom first and the lower end of second connecting rod (754) respectively
And first rotating shaft (73) (74)；
Second elevating mechanism includes movable block (81), second time movable block (82), the 6th rotating shaft (83), the 7th rotating shaft on second
And multiple second auxiliary bodies (84)；Movable block (81) movable bar is arranged on position-limited rack (22) bottom on second, and second moves up
Motion block (81) moving direction is direction close and away from lifting tube (21) axis, and second time movable block (82) is movably mounted to
On base (1), second time movable block (82) moving direction is close to and away from the direction of lifting tube (21) axis, the 6th rotating shaft
(83) it may be rotatably mounted on base (1), the 7th rotating shaft (84) may be rotatably mounted on second time movable block (82)；Second auxiliary
Mechanism includes eighth-turn axle (851), the 9th rotating shaft (852), third connecting rod (853), fourth link (854) and the tenth rotating shaft
(855), third connecting rod (853) and fourth link (854) upper end connect eighth-turn axle (851) and the 9th rotating shaft (852) respectively, the
Ten rotating shafts (855) are rotatably connected in the middle part of third connecting rod (853) and fourth link (854)；Second auxiliary body from top to bottom according to
It is secondary to set, in the second adjacent auxiliary body of any two, positioned at the eighth-turn axle (851) and the 9th of the auxiliary body of lower section second
Rotating shaft (852) is rotatably connected under the fourth link (854) and third connecting rod (853) of the second auxiliary body above respectively
End, the 7th rotating shaft is connected positioned at the third connecting rod (853) of the auxiliary body of bottom second and the lower end of fourth link (854) respectively
And the 6th rotating shaft (83) (84)；
First elevating mechanism and the second elevating mechanism are located at lifting tube (21) axis opposite sides；Carrying apparatus and the 5th rotating shaft
(755) correspond, carrying apparatus and the tenth rotating shaft (855) are corresponded；Carrying apparatus include connection auxiliary block (91), two
Support board (92) and return unit, connection auxiliary block (91) is provided with through hole is slided, and two support boards (92) are by sliding through hole
Can be with being arranged in connection auxiliary block (91), two support board (92) first ends are by return unit with being connected auxiliary block (91)
Connection, two ends of support board (92) second connect the 5th rotating shaft (755) and the tenth rotating shaft respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710445300.4A CN107199064B (en) | 2017-06-13 | 2017-06-13 | Convenient practical laboratory bench of height adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710445300.4A CN107199064B (en) | 2017-06-13 | 2017-06-13 | Convenient practical laboratory bench of height adjustment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107199064A true CN107199064A (en) | 2017-09-26 |
| CN107199064B CN107199064B (en) | 2020-10-13 |
Family
ID=59907655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710445300.4A Active CN107199064B (en) | 2017-06-13 | 2017-06-13 | Convenient practical laboratory bench of height adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107199064B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452375A (en) * | 2020-09-30 | 2021-03-09 | 邵阳学院 | Multifunctional adjustable laboratory workbench |
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| CN205146280U (en) * | 2015-12-03 | 2016-04-13 | 刘宜嘉 | Elevating platform for physics experiments |
| CN106710321A (en) * | 2017-03-02 | 2017-05-24 | 林立扬 | Auxiliary station for physical tests |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202781106U (en) * | 2012-07-12 | 2013-03-13 | 浙江吉润汽车有限公司 | Height-adjustable working platform |
| CN103861679A (en) * | 2014-03-12 | 2014-06-18 | 亿丰洁净科技江苏股份有限公司 | Test bed with protection function |
| CN203816677U (en) * | 2014-03-20 | 2014-09-10 | 河海大学 | Movable hoisting experiment table with variable tabletop |
| CN204485909U (en) * | 2015-02-27 | 2015-07-22 | 山东博科生物产业有限公司 | A kind of foot-control type lifting experimental bench |
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| CN112452375A (en) * | 2020-09-30 | 2021-03-09 | 邵阳学院 | Multifunctional adjustable laboratory workbench |
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| Publication number | Publication date |
|---|---|
| CN107199064B (en) | 2020-10-13 |
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