CN117657917A - Rebound-free elevator falling buffer device based on shearing thickening liquid and molecular spring - Google Patents
Rebound-free elevator falling buffer device based on shearing thickening liquid and molecular spring Download PDFInfo
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- CN117657917A CN117657917A CN202410038688.6A CN202410038688A CN117657917A CN 117657917 A CN117657917 A CN 117657917A CN 202410038688 A CN202410038688 A CN 202410038688A CN 117657917 A CN117657917 A CN 117657917A
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- molecular spring
- shear thickening
- piston rod
- thickening fluid
- rebound
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- 230000008719 thickening Effects 0.000 title claims abstract description 102
- 238000010008 shearing Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 65
- 230000003139 buffering effect Effects 0.000 claims abstract description 19
- 230000007306 turnover Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 33
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 239000002609 medium Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000012229 microporous material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002612 dispersion medium Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000005381 potential energy Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 5
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Abstract
The invention discloses a rebound-free elevator falling buffer device based on shear thickening fluid and a molecular spring, which comprises a molecular spring, a lower molecular spring cavity, a shear thickening fluid module, an upper molecular spring cavity, a piston rod, a resistance rod and a turnover block. The impact of the elevator car is transmitted to the molecular spring through the piston rod and converted into elastic potential energy of the molecular spring, the piston rod is pushed to move upwards when the molecular spring releases the elastic potential energy, at the moment, the overturning block arranged at the bottom of the piston rod and in an open state pushes the resistance rod positioned in the shearing thickening liquid to move upwards together, and the shearing thickening liquid can generate great resistance to prevent the dry piece moving at a high speed, so that the elastic potential energy of the molecular spring is finally converted into energy consumption by the shearing thickening liquid, thereby avoiding rebound of the elevator car. The invention is used for buffering the elevator, and the shearing thickening fluid and the molecular spring can realize effective buffering and rebound-free after the elevator car falls at a high speed, thereby improving the safety of the elevator.
Description
Technical Field
The invention relates to the field of elevator equipment, in particular to a rebound-free high-safety elevator falling buffer device.
Background
Since the elevator of a high-rise building is long in service or improper in maintenance, the situation that the elevator car impacts the foundation at a high speed is unavoidable, and therefore, a falling buffer device of the elevator car needs to be installed on the foundation. Shear thickening fluids are special fluids whose viscosity increases significantly with increasing shear rate or shear stress. Such fluids, when subjected to high-speed impact or compression, become rigid and allow for efficient energy absorption, i.e., maximum absorption of external forces. When the external force is lost, the elastic body can be restored to the original soft state. The shearing thickening fluid has wide application prospects in the fields of protection, impact resistance, vibration reduction and the like, and is commonly used for preparing bulletproof materials, dampers or other protective equipment. The molecular spring is a liquid-solid mixed medium, has excellent mechanical properties like an air spring, and has the remarkable advantages of reliable structure and small volume. Shear thickening fluid and molecular springs are the core of the realization of the invention. The elevator buffer device has the advantages of simple structural design, good buffering performance, no rebound after buffering, and secondary injury avoidance, so that the rebound-free and high-safety elevator buffer device can effectively avoid casualties caused by elevator falling.
Disclosure of Invention
The invention aims to provide a rebound-free elevator falling buffer device based on shearing thickening fluid and a molecular spring, which can avoid casualties caused by high-speed falling of an elevator car.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the rebound-free elevator falling buffer device based on the shear thickening fluid and the molecular spring comprises a molecular spring, a lower molecular spring cavity, a shear thickening fluid module, an upper molecular spring cavity, a piston rod, a resistance rod and a turnover block. The molecular spring is arranged in the lower molecular spring cavity; the lower molecular spring cavity is matched with the shear thickening module to realize the sealing of the molecular spring through a sealing ring in the top sealing groove; the shear thickening module is positioned between the upper molecular spring cavity and the lower molecular spring cavity, and the interior of the shear thickening module is filled with shear thickening liquid; hydraulic oil is filled in the upper molecular spring cavity; the piston rod consists of an upper end stepped cylinder and a square body with a groove at the center of the lower end, and penetrates through the upper molecular spring cavity and the shear thickening module and finally goes deep into the lower molecular spring cavity; the upper end of the resistance rod stretches into the shear thickening fluid, the lower end of the resistance rod is positioned in the lower molecular spring cavity, when the piston rod is impacted to move downwards, the overturning block at the bottom of the piston rod is unfolded under the inertia effect and is in a horizontal state, and when the piston rod moves upwards, the horizontally unfolded overturning block pushes the resistance rod to move towards the interior of the shear thickening fluid; the piston rod, the overturning block and the resistance rod are used for transmitting the impact force of the elevator car; the molecular spring and the shear thickening fluid are used for absorbing and dissipating the impact force of the elevator car; the molecular spring is a liquid-solid mixed medium consisting of a hydrophobic microporous material and water; the shear thickening fluid is a special fluid, generally composed of a disperse phase and a dispersion medium, and can be prepared by adding silicon carbide to polyethylene glycol.
The lower molecular spring cavity is a cylindrical shell with an opening at the top, uniformly distributed through holes are formed in the edge of the upper end of the shell, a sealing groove is formed in the inner side of the through hole, a sealing ring is arranged in the sealing groove to seal the lower molecular spring cavity, a bolt penetrates through the through hole at the edge of the lower molecular spring cavity to realize the fastening connection between the lower molecular spring cavity and the shear thickening module and the upper molecular spring cavity, a molecular spring is filled in the lower molecular spring cavity, and the molecular spring can convert the impact force of a high-speed falling elevator car into elastic potential energy, so that a buffering function is realized.
The shear thickening module is provided with a central through hole and a cylinder with through holes uniformly distributed in the edge, a pair of cylindrical cavities are formed between the central through hole and the through holes in the edge, openings are formed in the lower ends of the cavities, the shear thickening module is located between the upper molecular spring cavity and the lower molecular spring cavity, the upper ends of the resistance rods are located in the cylindrical cavities of the shear thickening module, when the piston rods move upwards, the resistance rods are driven to move upwards together through the overturning blocks, the resistance rods move at high speed in the cylindrical cavities of the shear thickening module to cause great resistance to the shear thickening fluid, so that the upward movement of the piston rods is restrained, and secondary damage to passengers due to rebound of an elevator car can be avoided.
The upper molecular spring cavity is a stepped cylindrical shell, hydraulic oil is filled in the shell, the bottom of the upper molecular spring cavity is provided with edge uniformly distributed through holes, the inner sides of the edge through holes are provided with sealing grooves, sealing rings are arranged in the sealing grooves, the center of the top of the upper molecular spring cavity is provided with a boss, the center of the boss is provided with a through hole, the inner sides of the through holes are provided with sealing grooves, and the sealing rings are arranged in the sealing grooves.
The piston rod comprises an upper end large disc and a lower end center grooved cube, the side groove surface is provided with a left through hole and a right through hole, the piston rod penetrates through the upper molecular spring cavity and the shear thickening module and finally goes deep into the lower molecular spring cavity, the overturning block is fixed between the pair of through holes of the side groove surface through a cylindrical pair, under the normal state, the overturning block is restrained by the shear thickening module center through hole to be tightly attached to the piston rod lower end grooved cube, and after the piston rod is impacted by the elevator car to move downwards, the overturning block can separate from the piston rod due to inertia and is unfolded to be in the horizontal state.
The resistance rod is a stepped cylinder, the large-diameter end of the resistance rod is positioned in the cylindrical cavity of the shear thickening module, the lower end of the resistance rod is positioned in the lower molecular spring cavity, and the resistance rod is used for transmitting force for restraining upward movement of the piston rod.
The overturning block is fixed between a pair of through holes on the side groove surface through a cylindrical pair, the overturning block is restrained by a central through hole of the shear thickening module under a normal state and is clung to a square grooved at the lower end of the piston rod, after the piston rod is impacted by the elevator car to move downwards, the overturning block can be separated from the piston rod due to inertia and is unfolded to a horizontal state, when the piston rod moves upwards under the action of elastic restoring force of the molecular spring, the horizontally unfolded overturning block can drive the resistance rod to move upwards, the resistance rod can be acted by the resistance of the shear thickening liquid, the piston rod stops rebounding, and finally, the movement is stopped after the elevator car is buffered, so that the secondary damage caused by the rebound of the elevator car is avoided.
The beneficial effects of the invention are as follows:
the invention is used for buffering the elevator, and the shearing thickening fluid and the molecular spring can realize effective buffering and rebound-free after the elevator car falls at a high speed, thereby improving the safety of the elevator.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of a lower molecular spring cavity;
FIG. 3 is a cross-sectional view of a shear thickening fluid module;
FIG. 4 is a cross-sectional view of an upper molecular spring cavity;
FIG. 5 is a schematic view of a piston rod;
FIG. 6 is a schematic view of the bottom of the piston rod;
FIG. 7 is a cross-sectional view of a resistance rod;
FIG. 8 is a schematic diagram of a flipping block;
FIG. 9 is a schematic view of the relative position of the piston rod and the tilting mechanism when not in operation;
FIG. 10 is a schematic illustration of the relative position of the piston rod and the tilting mechanism during operation;
in the figure, 1-molecular spring material; 201-a lower molecular spring cavity; 202-sealing the top groove of the lower molecular spring cavity; 203-bottom molecular spring cavity top edge through hole; 3-a first sealing ring; 401-a shear thickening fluid module; 402-shear thickening fluid module edge through holes; 403-shear thickening fluid chamber; 404-a shear thickening fluid module central through hole; 405-opening; 501-upper molecular spring cavity; 502-upper molecular spring cavity bottom edge through hole; 503-upper molecular spring cavity top center boss; 504-a center boss center through hole of an upper molecular spring cavity; 505-upper molecular spring cavity center through hole inside seal groove; 506-sealing the bottom edge of the upper molecular spring cavity; 6-a second sealing ring; 701-a piston rod; 702-piston rod top disc; 703-a piston rod bottom center cube; 704-a cube middle groove; 705-side pocket face through holes; 8-hydraulic oil; 9-a third sealing ring; 10-shearing thickening fluid; 11-a resistance bar; 1201-flip block; 1202-turning over the block boss; 1203-flip block boss through hole.
Detailed Description
The invention is further explained below with reference to the drawings.
The invention discloses a rebound-free elevator falling buffer device based on shear thickening fluid and a molecular spring, which is shown in fig. 1 and comprises a molecular spring, a lower molecular spring cavity, a shear thickening fluid module, an upper molecular spring cavity, a piston rod, a resistance rod and a turnover block. The molecular spring is arranged in the lower molecular spring cavity; the lower molecular spring cavity is matched with the shear thickening module to realize the sealing of the molecular spring through a sealing ring in the top sealing groove; the shear thickening module is positioned between the upper molecular spring cavity and the lower molecular spring cavity, and the interior of the shear thickening module is filled with shear thickening liquid; hydraulic oil is filled in the upper molecular spring cavity; the piston rod consists of an upper end stepped cylinder and a square body with a groove at the center of the lower end, and penetrates through the upper molecular spring cavity and the shear thickening module and finally goes deep into the lower molecular spring cavity; the upper end of the resistance rod stretches into the shear thickening fluid, the lower end of the resistance rod is positioned in the lower molecular spring cavity, when the piston rod is impacted to move downwards, the overturning block at the bottom of the piston rod is unfolded under the inertia effect and is in a horizontal state, and when the piston rod moves upwards, the horizontally unfolded overturning block pushes the resistance rod to move towards the interior of the shear thickening fluid; the piston rod, the overturning block and the resistance rod are used for transmitting the impact force of the elevator car; the molecular spring and the shear thickening fluid are used for absorbing and dissipating the impact force of the elevator car; the molecular spring is a liquid-solid mixed medium consisting of a hydrophobic microporous material and water; the shear thickening fluid is a special fluid, generally consists of a disperse phase and a disperse medium, and can be prepared by adding silicon carbide into polyethylene glycol; the invention is used for buffering the elevator, and the shearing thickening fluid and the molecular spring can realize effective buffering and rebound-free after the elevator car falls at a high speed, thereby improving the safety of the elevator.
As shown in fig. 2, the lower molecular spring cavity 201 is a cylindrical shell with an opening at the top, through holes 203 are uniformly distributed at the edge of the upper end of the shell, a sealing groove 202 is formed at the top of the lower molecular spring cavity and is internally provided with a first sealing ring 3 to seal the lower molecular spring cavity 201, a bolt penetrates through the through holes 203 at the top of the lower molecular spring cavity to realize the fastening connection with the shear thickening module 401 and the upper molecular spring cavity 501, the molecular spring 1 is filled in the lower molecular spring cavity 201, and the sealed molecular spring 1 can convert the impact force of a high-speed falling elevator car into elastic potential energy, thereby realizing a buffering function.
As shown in fig. 3, the shear thickening module 401 is provided with a central through hole 404 of the shear thickening fluid module and a peripheral through hole 402 of the shear thickening fluid module uniformly distributed on the periphery, a pair of cylindrical shear thickening fluid chambers 403 are arranged between the central through hole and the peripheral through hole, the shear thickening fluid chambers 403 are filled with the shear thickening fluid 10, the lower ends of the shear thickening fluid chambers 403 are provided with openings 405, the shear thickening module 401 is positioned between the lower molecular spring chambers 201 and the upper molecular spring chambers 501, the upper ends of the resistance rods 11 are positioned in the shear thickening fluid chambers 403, when the piston rods 701 move upwards, the resistance rods 11 are driven to move upwards together through the overturning blocks 1201, and the high-speed movement of the resistance rods 11 in the shear thickening fluid chambers 403 can cause the shear thickening fluid 10 to generate great resistance, so that the upward movement of the piston rods 701 is restrained, and finally, the secondary injury of the elevator car to passengers due to rebound can be avoided.
As shown in fig. 4, the upper molecular spring cavity 501 is a stepped cylindrical shell, the shell is filled with hydraulic oil 8, the bottom edge of the upper molecular spring cavity 501 is uniformly distributed with upper molecular spring cavity bottom edge through holes 502, an upper molecular spring cavity bottom edge sealing groove 506 is arranged on the inner side of the upper molecular spring cavity bottom edge through holes 502, a third sealing ring 9 is installed in the sealing groove, an upper molecular spring cavity top central boss 503 is arranged on the upper molecular spring cavity top center, an upper molecular spring cavity central boss central through hole 504 is arranged on the center of the upper molecular spring cavity top central boss central through hole 504, an upper molecular spring cavity central through hole inner side sealing groove 505 is arranged on the inner side of the upper molecular spring cavity central through hole 504, and a second sealing ring 6 is installed in the sealing groove.
As shown in fig. 5-6, the piston rod 701 is composed of a piston rod top disc 702 at the upper end and a piston rod bottom center cube 703 at the lower end, side groove surface through holes 705 are formed in the left and right sides of the cube middle groove 704, the piston rod 701 penetrates through the upper molecular spring cavity 501 and the shear thickening module 401 and finally goes deep into the lower molecular spring cavity 201, the overturning block 1201 is fixed between the pair of side groove surface through holes 705 through a cylindrical pair, under normal conditions, the overturning block 1201 is tightly attached to the piston rod bottom center cube 703 under the constraint of the shear thickening module center through hole 404, and after the piston rod 701 is impacted by an elevator car to move downwards, the overturning block 1201 is separated from the piston rod 701 due to inertia and is unfolded to a horizontal state.
The resistance rod 11 is a stepped cylinder as shown in fig. 7, the large diameter end is positioned in the cylindrical cavity of the shear thickening module, the lower end is positioned in the lower molecular spring cavity, and the resistance rod is used for transmitting force for restraining the upward movement of the piston rod.
As shown in fig. 8, the turning block 1201 comprises a turning block boss 1202, a turning block boss through hole 1203 is formed in the turning block boss 1202, the turning block 1201 is fixed between the side groove surface through holes 705 through a cylindrical pair, under normal conditions, the turning block 1201 is constrained by the central through hole 404 of the shear thickening module to be tightly attached to the central square 703 at the bottom of the piston rod, when the piston rod 701 is impacted by the elevator car to move downwards, the turning block 1201 can separate from the piston rod 701 due to inertia and be unfolded to a horizontal state, when the piston rod 701 moves upwards under the elastic restoring force of the molecular spring 1, the horizontally unfolded turning block 1201 can drive the resistance rod 11 to move upwards, the resistance rod 11 can be acted by the resistance of the shear thickening liquid 10, the piston rod 701 stops rebounding, and finally, the movement is stopped after the buffer of the elevator car is realized, and the secondary damage caused by the rebound of the elevator car is avoided.
As shown in fig. 9, when not in operation, the overturning block 1201 is constrained by the central through hole 404 of the shear thickening module to cling to the bottom central cube 703 of the piston rod.
In operation, as shown in fig. 10, the flip block 1201 is disengaged from the piston rod 701 by inertia and is deployed to a horizontal state.
In summary, the invention discloses a rebound-free elevator falling buffer device based on shear thickening fluid and a molecular spring, which comprises the molecular spring, a lower molecular spring cavity, a shear thickening fluid module, an upper molecular spring cavity, a piston rod, a resistance rod and a turnover block. The piston rod, the overturning block and the resistance rod are used for transmitting the impact force of the elevator car; the molecular spring and the shear thickening fluid are used for absorbing and dissipating the impact force of the elevator car; the top disc of the piston rod is used for bearing high-speed impact of the elevator car; the impact of the elevator car is transmitted to the molecular spring through the piston rod and is converted into elastic potential energy of the molecular spring, the piston rod is pushed to move upwards when the molecular spring releases the elastic potential energy, at the moment, the overturning block arranged at the bottom of the piston rod and in an open state pushes the resistance rod positioned in the shearing thickening liquid to move upwards together, and the shearing thickening liquid can generate great resistance to prevent a dry part moving at a high speed from moving, so that the elastic potential energy of the molecular spring is finally converted into energy consumption by the shearing thickening liquid, thereby avoiding rebound of the elevator car; the molecular spring is a liquid-solid mixed medium consisting of a hydrophobic microporous material and water; shear thickening fluids are special fluids whose viscosity increases significantly with increasing shear rate or shear stress; the invention is used for buffering the elevator, and the shearing thickening fluid and the molecular spring can realize effective buffering and rebound-free after the elevator car falls at a high speed, thereby improving the safety of the elevator.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. Rebound-free elevator falling buffer device based on shearing thickening fluid and molecular springs, and is characterized in that: the device comprises a molecular spring, a lower molecular spring cavity, a shear thickening fluid module, an upper molecular spring cavity, a piston rod, a resistance rod and a turnover block; the molecular spring is internally arranged in the lower molecular spring cavity; the shear thickening module is positioned between the upper molecular spring cavity and the lower molecular spring cavity and comprises a central through hole and a shear thickening fluid cavity, wherein the shear thickening fluid cavity is filled with the shear thickening fluid, and the central through hole penetrates through the piston rod; hydraulic oil is filled in the upper molecular spring cavity; the piston rod penetrates through the upper molecular spring cavity and the shear thickening module and finally goes deep into the lower molecular spring cavity; the upper end of the resistance rod penetrates into the shear thickening fluid cavity, and the lower end of the resistance rod is positioned in the lower molecular spring cavity; the overturning block is rotatably arranged at the bottom of the piston rod, when no external impact exists, the overturning block is in a contracted state of being tightly attached to the piston rod and is restrained in a central through hole of the shear thickening module, when the piston rod moves downwards under the impact, the overturning block connected to the bottom of the piston rod is unfolded to be in a horizontal state, and when the piston rod moves upwards in a rebound mode, the horizontally unfolded overturning block pushes the resistance rod to move towards the interior of the shear thickening liquid.
2. The rebound-free elevator fall buffering device based on shear thickening fluid and molecular springs according to claim 1, wherein: the piston rod, the overturning block and the resistance rod are used for transmitting impact force of the elevator car; the molecular spring and the shear thickening fluid are used for absorbing and dissipating the impact force of the elevator car.
3. The rebound-free elevator fall buffering device based on shear thickening fluid and molecular springs according to claim 2, wherein: the molecular spring is a liquid-solid mixed medium consisting of a hydrophobic microporous material and water; the shear thickening fluid consists of a dispersed phase and a dispersion medium, and the viscosity thereof increases significantly with an increase in shear rate or shear stress.
4. The rebound-free elevator fall buffering device based on shear thickening fluid and molecular springs according to claim 1, wherein: the lower molecular spring cavity is a shell with an opening at the top, a first sealing groove is formed in the edge of the upper end of the shell, and a first sealing ring is installed in the first sealing groove.
5. The rebound-free elevator fall buffering device based on shear thickening fluid and molecular springs according to claim 1, wherein: the periphery of the central through hole of the shear thickening module is provided with a pair of cavities, namely shear thickening fluid cavities, and the lower ends of the shear thickening fluid cavities are provided with openings.
6. The rebound-free elevator fall buffering device based on shear thickening fluid and molecular springs according to claim 1, wherein: the bottom edge of going up molecular spring chamber is provided with the third seal groove, installs the third sealing washer in the third seal groove, goes up molecular spring chamber top inboard and sets up the second seal groove, installs the second sealing washer in the second seal groove.
7. The rebound-free elevator fall buffering device based on shear thickening fluid and molecular springs according to claim 1, wherein: the upper end of piston rod is provided with the top disc, and the lower extreme is provided with the square of center fluting, and the side groove face sets up two shaft holes side by side, installs the pivot in the shaft hole, and a pair of upset piece is installed in the pivot respectively.
8. The rebound-free elevator fall buffering device based on the shear thickening fluid and the molecular spring according to claim 1,
the method is characterized in that: the resistance rod is a stepped cylinder and comprises a large-diameter end at the upper end and a small-diameter body at the lower part,
the large-diameter end is positioned in the shear thickening fluid cavity, and the small-diameter body is positioned in the lower molecular spring cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410038688.6A CN117657917A (en) | 2024-01-11 | 2024-01-11 | Rebound-free elevator falling buffer device based on shearing thickening liquid and molecular spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410038688.6A CN117657917A (en) | 2024-01-11 | 2024-01-11 | Rebound-free elevator falling buffer device based on shearing thickening liquid and molecular spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117657917A true CN117657917A (en) | 2024-03-08 |
Family
ID=90086561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410038688.6A Pending CN117657917A (en) | 2024-01-11 | 2024-01-11 | Rebound-free elevator falling buffer device based on shearing thickening liquid and molecular spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117657917A (en) |
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2024
- 2024-01-11 CN CN202410038688.6A patent/CN117657917A/en active Pending
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