CN119097506A - Wheelchair-assisted obstacle-crossing device - Google Patents
Wheelchair-assisted obstacle-crossing device Download PDFInfo
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- CN119097506A CN119097506A CN202411488299.XA CN202411488299A CN119097506A CN 119097506 A CN119097506 A CN 119097506A CN 202411488299 A CN202411488299 A CN 202411488299A CN 119097506 A CN119097506 A CN 119097506A
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- frame
- torsion beam
- wheelchair
- linkage
- obstacle
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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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
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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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
- A61G5/068—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps with extensible supports pushing upwards, e.g. telescopic legs
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
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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)
- Handcart (AREA)
Abstract
The invention belongs to the technical field of wheelchair accessories, and discloses an auxiliary obstacle crossing device for a wheelchair, which comprises a front torsion beam, wherein a rear torsion beam is fixedly arranged at the rear end of the front torsion beam, a locking frame is fixedly arranged in the middle of the top end of the front torsion beam, a linkage assembly is fixedly sleeved on the inner side surface of the locking frame, a linkage frame is movably sleeved on the top end of the front torsion beam close to the left side and the right side, and the bottom end of the linkage frame penetrates through the bottom end of the front torsion beam and is fixedly connected with a front mounting frame. According to the invention, the cooperation between the auxiliary wheel on the L-shaped frame and the second lug plate and the cooperation between the first lug plate and the self-adaptive component are adopted, so that the rear-mounted driving wheel shell always keeps the ground contact during obstacle crossing, the contact area of the rear-mounted driving wheel shell can be increased through the auxiliary wheel, the problem that part of tires are suspended during obstacle crossing of the traditional wheelchair is avoided, the stability during obstacle crossing can be maintained, and the safety of handicapped people during running is improved.
Description
Technical Field
The invention belongs to the technical field of wheelchair accessories, and particularly relates to an auxiliary obstacle surmounting device for a wheelchair.
Background
The conventional wheelchair equipment is mainly divided into a manual wheelchair and an electric wheelchair, wherein the electric wheelchair is a new-generation intelligent wheelchair which is formed by modifying and upgrading by superposing a high-performance power driving device, an intelligent operating device, a battery and other parts on the basis of the traditional manual wheelchair. Because wheelchairs mainly assist people with inconvenient actions to assist walking and are required to cover various use scenes, how to surmount the obstacle will affect the absolute performance of the wheelchair.
The conventional wheelchair auxiliary obstacle crossing device is mainly arranged on a chassis of the wheelchair and mainly comprises a driving wheel, a spring and a suspension, when an obstacle is encountered, the driving wheel can move up and down under the action of the spring to cross the obstacle, so that obstacle crossing is realized, but when the obstacle crossing mode is used for crossing the obstacle, the driving wheel can only move up and down to cause partial suspension, so that the stability of the whole wheelchair is reduced, and improvement is needed.
Because the conventional wheelchair device mainly uses a large and small driving wheel configuration, generally, the front driving wheel is smaller than the rear driving wheel, and the rear tires can cross the obstacle due to different sizes of the tires, so that the front driving wheel cannot touch the ground, and the whole wheelchair is likely to turn over and has poor stability.
Disclosure of Invention
The invention aims to provide an auxiliary obstacle surmounting device for a wheelchair, which aims to solve the problems in the prior art.
In order to achieve the purpose, the wheelchair auxiliary obstacle crossing device comprises a front torsion beam, wherein a rear torsion beam is fixedly arranged at the rear end of the front torsion beam, a locking frame is fixedly arranged at the middle part of the top end of the front torsion beam, a linkage assembly is fixedly sleeved on the inner side surface of the locking frame, a linkage frame is movably sleeved on the position, close to the left side and the right side, of the top end of the front torsion beam, the bottom end of the linkage frame penetrates through the bottom end of the front torsion beam and is fixedly connected with a front mounting frame, the inner side surface of the front mounting frame is movably connected with a front driving wheel, the top end of the linkage frame penetrates through the top end of the front torsion beam, the middle part of the top end of the linkage frame is connected with the bottom end of the linkage assembly, a supporting frame is fixedly arranged at the top end of the rear torsion beam, self-adapting assemblies are fixedly sleeved on the top ends of the supporting frame, the left side and the right side surfaces of the rear mounting frame are movably connected with rear driving wheels, two ends, which are relatively close to the bottom end of the front mounting frame, and the auxiliary mounting frame are movably connected with the auxiliary assembly.
Before use, the hydraulic oil in the self-adaptive assembly is required to be kept in a constant state, meanwhile, the front driving wheel and the rear driving wheel are reset, the device is connected with the bottom end of the wheelchair, and the front driving wheel and the rear driving wheel can be contacted with each other, namely, the bottom ends of the front driving wheel and the rear driving wheel are both positioned on the same horizontal plane.
As a further technical scheme of the invention, the left end and the right end of the rear torsion beam are fixedly provided with the second lug plates, the inner side surfaces of the rear mounting frames are fixedly provided with the L-shaped frames, and the bottom ends of the inner side surfaces of the L-shaped frames are fixedly provided with the first mounting seats.
As a further technical scheme of the invention, the top ends of the inner side surfaces of the L-shaped frames are fixedly provided with first lug plates, the first mounting seats are movably connected with the second lug plates through rotating shafts, and the first lug plates are connected with the left side and the right side of the self-adaptive assembly through the rotating shafts.
When the wheelchair encounters an obstacle, namely the rear driving wheel encounters the obstacle, and the obstacle cannot be avoided from crossing from the upper side, the rear driving wheel can be contacted with the obstacle at the moment and exerts upward thrust on the rear driving wheel, the rear mounting frame is stressed and transferred to the L-shaped frame at the moment and drives the first mounting seat to rotate relative to the second lug plate, the first lug plate rotates relative to the self-adaptive assembly at the moment and exerts thrust on the self-adaptive assembly, the rear driving wheel deflects towards the outer side face at the moment, the expansion is completed, the inner side face of the rear driving wheel can be contacted with the ground at the moment, the auxiliary wheel deflects with the rear driving wheel until the outer side face of the auxiliary wheel is contacted with the ground, and the ground contact state is maintained.
Through changing traditional rear-mounted drive wheel only can the up-and-down displacement's mounting means, turn into the cooperation between auxiliary wheel and the second otic placode on the adoption L type frame to and the cooperation effect between first otic placode and the self-adaptation subassembly, when guaranteeing to cross the obstacle, rear-mounted drive wheel shell remains throughout and touches the ground, and accessible auxiliary wheel increases its area of contact, avoids traditional wheelchair when crossing the obstacle, has the unsettled problem of partial tire, can keep the stability when crossing the obstacle, improves the security when handicapped person goes out.
As a further technical scheme of the invention, the self-adaptive assembly comprises an oil storage pipe, the outer side surface of the oil storage pipe is fixedly sleeved with the support frame, the middle part of the front end of the oil storage pipe is fixedly communicated with an oil delivery valve, the oil delivery valve is communicated with the linkage assembly, and hydraulic oil is filled in the oil storage pipe.
As a further technical scheme of the invention, the left side and the right side of the inner cavity of the oil storage pipe are movably sleeved with the second piston plates, one ends, relatively far away from the second piston plates, of the two second piston plates are fixedly provided with the second piston rods, and the other ends of the second piston rods penetrate through one end of the oil storage pipe and are fixedly connected with the second mounting seats.
As a further technical scheme of the invention, the second mounting seat is movably connected with the first lug plate through the rotating shaft, the outer side face of the second piston rod is movably sleeved with the reset spring, and the left side and the right side of the reset spring are respectively connected with one end of the second mounting seat and one end of the oil storage pipe.
When the rear driving wheel is used for surmounting an obstacle, the first lug plate rotates relative to the second mounting seat and simultaneously applies thrust to the second mounting seat, at the moment, the second mounting seat is subjected to inward thrust action, at the moment, the reset spring is compressed, and drives the two second piston plates to approach towards the middle part of the oil storage pipe, at the moment, hydraulic oil in the oil storage pipe is subjected to pressure action, and is automatically guided out through the oil delivery valve and enters the linkage assembly;
And when the obstacle surmounting stops, the rear driving wheel is restored to an initial state, the reset spring is automatically reset and drives the second piston plate to be automatically reset, negative pressure can be generated in the oil storage pipe at the moment, hydraulic oil is returned to the oil storage pipe again, and the reset process is completed.
As a further technical scheme of the invention, the linkage assembly comprises a temporary storage pipe, wherein the outer side surface of the temporary storage pipe is fixedly sleeved with the locking frame, a communicating pipe is fixedly communicated with the rear side position of the temporary storage pipe, which is close to the top end, the rear end of the communicating pipe is communicated with the oil delivery valve, and a first piston plate is movably sleeved inside the temporary storage pipe.
As a further technical scheme of the invention, the bottom end of the first piston plate is fixedly connected with a first piston rod positioned in the temporary storage pipe, the bottom end of the first piston rod penetrates through the bottom end of the temporary storage pipe and is connected with the middle part of the top end of the linkage frame, the outer side surface of the first piston rod is movably sleeved with a limiting spring, and the upper end and the lower end of the limiting spring are respectively connected with the bottom end of the first piston plate and the bottom end of the inner cavity of the temporary storage pipe.
When the rear driving wheel passes through the obstacle, hydraulic oil in the oil storage pipe can be led out through the oil delivery valve and enters the temporary storage pipe through the communicating pipe, the input hydraulic oil can apply pressure to the first piston plate, at the moment, the first piston plate and the first piston rod move downwards along with each other and compress the limiting spring, at the moment, the first piston plate and the first piston rod move downwards along with each other and apply downward thrust to the linkage frame, and the front mounting frame at the bottom end and the front driving wheel are driven to move downwards until the bottom end of the front driving wheel contacts with the ground, and the ground contact compensation process is completed.
The hydraulic oil is guided out by utilizing the pressure action provided by deflection of the rear driving wheel and matching with the action of the self-adaptive component when the obstacle is surmounted, and the hydraulic oil action and the linkage component are used for finally realizing automatic downward movement of the front driving wheel, so that the whole process is automatically finished, automatic adjustment and automatic compensation of the upper and lower positions of the front driving wheel when the obstacle is surmounted can be automatically realized, the front driving wheel is ensured to touch the ground, the problem that the front tire of the traditional device cannot touch the ground when the obstacle is surmounted is avoided, and the overall stability of the wheelchair is improved.
The beneficial effects of the invention are as follows:
1. According to the invention, by changing the installation mode that the traditional rear driving wheel can only move up and down, the cooperation between the auxiliary wheel on the L-shaped frame and the second lug plate and the cooperation between the first lug plate and the self-adaptive component are adopted, so that the rear driving wheel shell always keeps touching the ground when the obstacle is surmounted, the contact area of the rear driving wheel shell can be increased through the auxiliary wheel, the problem that part of tires are suspended when the traditional wheelchair surmounts the obstacle is avoided, the stability when the obstacle is surmounted can be maintained, and the safety when the handicapped is surmounted is improved.
2. According to the invention, when the obstacle is surmounted, the pressure action provided by deflection of the rear driving wheel is matched with the action of the self-adaptive component to finish the guiding of hydraulic oil, and the hydraulic oil action and the linkage component are used to finally realize the automatic downward movement of the front driving wheel, so that the whole process is automatically finished, the automatic adjustment and automatic compensation of the upper and lower positions of the front driving wheel when the obstacle is surmounted can be automatically realized, the front driving wheel is ensured to touch the ground, the problem that the front tire cannot touch the ground when the obstacle is surmounted by the traditional device is avoided, and the overall stability of the wheelchair is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an exploded view of the front torsion beam and linkage frame structure of the present invention;
FIG. 3 is an isolated cross-sectional schematic view of the linkage assembly structure of the present invention;
FIG. 4 is a schematic illustration of the cooperation of the rear torsion beam and L-frame and the adaptive assembly structure of the present invention;
FIG. 5 is an exploded view of the rear torsion beam and rear mounting bracket structure of the present invention;
FIG. 6 is a schematic diagram of the cooperation of the rear mount and L-frame and auxiliary mount structure of the present invention;
fig. 7 is a schematic cross-sectional view of the internal structure of the adaptive assembly of the present invention.
The device comprises a front torsion beam, a rear torsion beam, a locking frame, a 4-linkage frame, a 5-front installation frame, a 6-front driving wheel, a 7-linkage assembly, a 701-temporary storage tube, a 702, a communicating tube, a 703, a first piston plate, a 704, a first piston rod, a 705, a limiting spring, an 8-rear installation frame, a 9-L-shaped frame, a 10-rear driving wheel, a 11-auxiliary installation frame, a 12-auxiliary wheel, a 13-first installation seat, a 14-first lug plate, a 15-second lug plate, a 16-supporting frame, a 17-self-adapting assembly, a 171, an oil storage tube, a 172, an oil delivery valve, 173, a second piston plate, 174, a second piston rod, a 175, a second installation seat, a 176 and a reset spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
As shown in fig. 1 to 7, in the embodiment of the invention, an auxiliary obstacle crossing device for a wheelchair comprises a front torsion beam 1, a rear torsion beam 2 is fixedly arranged at the rear end of the front torsion beam 1, a locking frame 3 is fixedly arranged at the middle part of the top end of the front torsion beam 1, a linkage assembly 7 is fixedly sleeved on the inner side surface of the locking frame 3, a linkage frame 4 is movably sleeved on the position, close to the left side and the right side, of the top end of the front torsion beam 1, a front installation frame 5 is fixedly connected with the bottom end of the linkage frame 4, a front driving wheel 6 is movably connected with the inner side surface of the front installation frame 5, the top end of the linkage frame 4 penetrates the top end of the front torsion beam 1, the middle part of the top end of the linkage frame 4 is connected with the bottom end of the linkage assembly 7, a support frame 16 is fixedly arranged at the top end of the rear torsion beam 2, an adaptive assembly 17 is fixedly sleeved on the top end of the support frame 16, rear installation frames 8 are respectively provided with rear installation frames 8, rear driving wheels 10 are respectively movably connected with the inner side surfaces of the rear installation frames 8, one ends, which are relatively close to each other, auxiliary installation frames 11 are respectively, and the auxiliary installation frames 11 are respectively connected with the rear installation frames 12, and the front installation frames 12 are respectively.
Before use, the hydraulic oil in the self-adaptive assembly 17 needs to be kept in a constant state, meanwhile, the front driving wheel 6 and the rear driving wheel 10 are reset, and the device is connected with the bottom end of the wheelchair, so that the front driving wheel 6 and the rear driving wheel 10 can touch the ground, namely, the bottom ends of the front driving wheel 6 and the rear driving wheel 10 are on the same horizontal plane.
As shown in fig. 1, fig. 4, fig. 5 and fig. 6, the left end and the right end of the rear torsion beam 2 are fixedly provided with second lug plates 15, the inner side surface of the rear mounting frame 8 is fixedly provided with an L-shaped frame 9, the bottom end of the inner side surface of the L-shaped frame 9 is fixedly provided with a first mounting seat 13, the top end of the inner side surface of the L-shaped frame 9 is fixedly provided with a first lug plate 14, the first mounting seat 13 is movably connected with the second lug plates 15 through a rotating shaft, and the first lug plates 14 are connected with the left side and the right side of the self-adaptive assembly 17 through the rotating shaft.
In the embodiment, when the wheelchair encounters an obstacle, namely the rear driving wheel 10 encounters an obstacle, and the obstacle cannot be avoided from crossing from above, the rear driving wheel 10 can be contacted with the obstacle, and upward thrust is exerted on the rear driving wheel 10, the rear mounting frame 8 is stressed and transferred to the L-shaped frame 9, the first mounting seat 13 is driven to rotate relative to the second lug plate 15, the first lug plate 14 rotates relative to the adaptive assembly 17, thrust is exerted on the adaptive assembly 17, the rear driving wheel 10 is deflected towards the outer side surface, namely the outward expansion is completed, the inner side surface of the rear driving wheel 10 can be contacted with the ground, the auxiliary wheel 12 is deflected with the rear driving wheel 10 until the outer side surface of the auxiliary wheel 12 is contacted with the ground, and the ground contact state is maintained.
Through changing traditional rear-mounted drive wheel 10 only can the mounting means of displacement from top to bottom, the cooperation between auxiliary wheel 12 and the second otic placode 15 on the L type frame 9 that turns to adopts, and the cooperation effect between first otic placode 14 and the self-adaptation subassembly 17, ensure when crossing the barrier, rear-mounted drive wheel 10 shell remains ground all the time, and accessible auxiliary wheel 12 increases its area of contact, avoid traditional wheelchair when crossing the barrier, there is the unsettled problem of partial tire, stability when can remain crossing the barrier, the security when improving the disabled person and going out.
As shown in fig. 1 and 4 and fig. 5 and 7, the adaptive assembly 17 comprises an oil storage tube 171, an outer side surface of the oil storage tube 171 is fixedly sleeved with the support frame 16, an oil delivery valve 172 is fixedly communicated with the middle of the front end of the oil storage tube 171, the oil delivery valve 172 is communicated with the linkage assembly 7, hydraulic oil is filled in the oil storage tube 171, second piston plates 173 are movably sleeved on the left side and the right side of an inner cavity of the oil storage tube 171, second piston rods 174 are fixedly installed on the opposite ends of the two second piston plates 173, the other ends of the second piston rods 174 penetrate through one end of the oil storage tube 171 and are fixedly connected with second installation seats 175, the second installation seats 175 are movably connected with the first ear plates 14 through rotating shafts, reset springs 176 are movably sleeved on the outer side surfaces of the second piston rods 174, and the left side and the right side of the reset springs 176 are respectively connected with one ends of the second installation seats 175 and one ends of the oil storage tube 171.
When the rear driving wheel 10 is over the obstacle, the first ear plate 14 rotates relative to the second mounting seat 175 and applies thrust to the second mounting seat 175, at the moment, the second mounting seat 175 is acted by inward thrust, at the moment, the reset springs 176 are compressed, and drive the two second piston plates 173 to approach towards the middle part of the oil storage tube 171, at the moment, hydraulic oil in the oil storage tube 171 is acted by pressure, and is automatically guided out through the oil delivery valve 172 and enters the linkage assembly 7;
When the obstacle surmounting stops, the rear drive wheel 10 is restored to the initial state, the reset spring 176 is automatically reset, and drives the second piston plate 173 to be automatically reset, so that negative pressure can be generated in the oil storage tube 171, and hydraulic oil is returned to the oil storage tube 171 again, thereby completing the reset process.
As shown in fig. 1,2 and 3, the linkage assembly 7 includes a temporary storage tube 701, a communicating tube 702 is fixedly connected to the outer side surface of the temporary storage tube 701 and the locking frame 3, the rear side position of the temporary storage tube 701 near the top end is fixedly connected to the communicating tube 702, the rear end of the communicating tube 702 is connected to the oil delivery valve 172, a first piston plate 703 is movably connected to the inside of the temporary storage tube 701 in a sleeved mode, a first piston rod 704 is fixedly connected to the bottom end of the first piston plate 703 and located inside the temporary storage tube 701, the bottom end of the first piston rod 704 penetrates through the bottom end of the temporary storage tube 701 and is connected to the middle of the top end of the linkage frame 4, a limit spring 705 is movably connected to the outer side surface of the first piston rod 704 in a sleeved mode, and the upper end and the lower end of the limit spring 705 are connected to the bottom end of the first piston plate 703 and the bottom end of the inner cavity of the temporary storage tube 701 respectively.
In the embodiment, when the rear driving wheel 10 passes through an obstacle, hydraulic oil in the oil storage tube 171 can be led out through an oil delivery valve 172 and enters the temporary storage tube 701 through a communicating tube 702, the input hydraulic oil can exert pressure on the first piston plate 703, the first piston plate 703 and the first piston rod 704 move downwards along with the hydraulic oil and compress a limit spring 705, the first piston plate 703 and the first piston rod 704 move downwards along with the limit spring, downward thrust is exerted on the linkage frame 4, and the front mounting frame 5 and the front driving wheel 6 at the bottom end are driven to move downwards until the bottom end of the front driving wheel 6 contacts the ground, so that the ground contact compensation process is completed.
The hydraulic oil is guided out by utilizing the pressure action provided by deflection of the rear driving wheel 10 and matching with the action of the self-adaptive component 17 when the obstacle is surmounted, and the hydraulic oil action and the linkage component 7 are used for finally realizing the automatic downward movement of the front driving wheel 6, the whole process is automatically completed, the automatic adjustment and automatic compensation of the upper and lower positions of the front driving wheel 6 when the obstacle is surmounted can be automatically realized, the front driving wheel 6 can be ensured to touch the ground, the problem that the front tire cannot touch the ground when the obstacle is surmounted by the traditional device is avoided, and the overall stability of the wheelchair is improved.
Working principle and using flow:
Before use, the hydraulic oil in the self-adaptive assembly 17 is required to be kept in a constant state, meanwhile, the front driving wheel 6 and the rear driving wheel 10 are reset, and the device is connected with the bottom end of the wheelchair, so that the front driving wheel 6 and the rear driving wheel 10 can be contacted with each other, namely, the bottom ends of the front driving wheel 6 and the rear driving wheel 10 are on the same horizontal plane;
When the wheelchair encounters an obstacle, namely the rear driving wheel 10 encounters the obstacle, and the obstacle cannot be avoided from crossing from the upper side, the rear driving wheel 10 can be contacted with the obstacle at the moment, and upward thrust is exerted on the rear driving wheel 10, the rear mounting frame 8 is stressed and transferred to the L-shaped frame 9 at the moment, the first mounting seat 13 is driven to rotate relative to the second lug plate 15, the first lug plate 14 rotates relative to the self-adaptive assembly 17 at the moment, thrust is exerted on the self-adaptive assembly 17 at the moment, the rear driving wheel 10 is deflected towards the outer side surface at the moment, namely the expansion is completed, the inner side surface of the rear driving wheel 10 can be contacted with the ground at the moment, the auxiliary wheel 12 is deflected with the rear driving wheel 10 until the outer side surface of the auxiliary wheel 12 is contacted with the ground, and the ground is kept in a ground contact state;
When the rear driving wheel 10 is over the obstacle, the first ear plate 14 rotates relative to the second mounting seat 175 and applies thrust to the second mounting seat 175, at the moment, the second mounting seat 175 is acted by inward thrust, at the moment, the reset springs 176 are compressed, and drive the two second piston plates 173 to approach towards the middle part of the oil storage tube 171, at the moment, hydraulic oil in the oil storage tube 171 is acted by pressure, and is automatically guided out through the oil delivery valve 172 and enters the linkage assembly 7;
when the obstacle surmounting stops, the rear drive wheel 10 is restored to the initial state, the reset spring 176 automatically resets and drives the second piston plate 173 to automatically reset, at this time, negative pressure can be generated in the oil storage tube 171, and hydraulic oil is returned to the oil storage tube 171 again, so that the resetting process is completed;
When the rear driving wheel 10 passes through the obstacle, hydraulic oil in the oil storage tube 171 can be led out through the oil delivery valve 172 and enter the temporary storage tube 701 through the communicating tube 702, at the moment, the input hydraulic oil can apply pressure to the first piston plate 703, at the moment, the first piston plate 703 and the first piston rod 704 move downwards along with the hydraulic oil, the limiting spring 705 is compressed, at the moment, the first piston plate 703 and the first piston rod 704 move downwards along with the hydraulic oil, downward thrust is applied to the linkage frame 4, and the front mounting frame 5 and the front driving wheel 6 at the bottom end are driven to move downwards until the bottom end of the front driving wheel 6 contacts with the ground, and the ground contact compensation process is completed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411488299.XA CN119097506B (en) | 2024-10-23 | 2024-10-23 | Wheelchair-assisted obstacle-crossing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411488299.XA CN119097506B (en) | 2024-10-23 | 2024-10-23 | Wheelchair-assisted obstacle-crossing device |
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| Publication Number | Publication Date |
|---|---|
| CN119097506A true CN119097506A (en) | 2024-12-10 |
| CN119097506B CN119097506B (en) | 2025-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411488299.XA Active CN119097506B (en) | 2024-10-23 | 2024-10-23 | Wheelchair-assisted obstacle-crossing device |
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| JP2023115507A (en) * | 2022-02-08 | 2023-08-21 | トヨタ自動車株式会社 | wheelchair mobility aid |
| CN117008593A (en) * | 2022-12-19 | 2023-11-07 | 郑州海为电子科技有限公司 | Automatic obstacle avoidance inspection robot for power plant |
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2024
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| JP2003334216A (en) * | 2002-05-20 | 2003-11-25 | Emedica Kk | Wheelchair |
| US20080169136A1 (en) * | 2004-04-08 | 2008-07-17 | Levo Ag Wohlen | Wheelchair With A Middle Wheel Drive, In Particular Raising Wheelchair |
| CN201088676Y (en) * | 2007-10-08 | 2008-07-23 | 唐承慧 | Self-adaptive six-wheel touchdown middle-drive electric wheelchair |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN119097506B (en) | 2025-07-15 |
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