CN111973354A - Power driving device capable of assisting wheelchair to climb stairs - Google Patents
Power driving device capable of assisting wheelchair to climb stairs Download PDFInfo
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- CN111973354A CN111973354A CN202010923136.5A CN202010923136A CN111973354A CN 111973354 A CN111973354 A CN 111973354A CN 202010923136 A CN202010923136 A CN 202010923136A CN 111973354 A CN111973354 A CN 111973354A
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- shaft
- cavity
- fixedly arranged
- bevel gear
- meshing
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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
- A61G5/061—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 for climbing stairs
-
- 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 discloses a power driving device capable of assisting a wheelchair to climb stairs, which comprises chassis which are symmetrical front and back and are arranged on the lower side of the wheelchair, wherein brackets which are symmetrical front and back are fixedly arranged on the lower sides of the chassis on two sides, a driving cavity is arranged in the bracket, a motor is fixedly arranged in the rear wall of the driving cavity at the rear side, a driving shaft is fixedly arranged on an output shaft at the front side of the motor, compared with the traditional mode of going upstairs of the wheelchair, firstly, the invention reduces the manpower consumption by electric drive, secondly, when climbing stairs, the invention keeps the surface of the contact plate unchanged all the time, is convenient to contact the step surface of the stairs and prevents slipping, and finally, the wheelchair is driven to stably move forwards and upwards when climbing stairs through cyclic lifting and advancing.
Description
Technical Field
The invention relates to the field of power drive of wheelchairs, in particular to a power drive device capable of assisting a wheelchair to climb stairs.
Background
With the progress of the times, in the aspect of medical treatment, in order to facilitate the free movement of the people with impaired or lost walking ability, the wheelchair is used for helping the disabled, the wheelchair is a chair provided with wheels and capable of helping to replace walking, and is divided into an electric folding wheelchair and a manual folding wheelchair and is an important moving tool for home rehabilitation, turnover transportation, diagnosis and outgoing activities of the wounded, the patient and the disabled.
At present, although the wheelchair can move on the flat ground, the wheelchair cannot climb and climb on the stairs, which affects daily trips of some wheelchair users, and a power driving device capable of driving the wheelchair to automatically climb the stairs needs to be designed.
Disclosure of Invention
The technical problem is as follows: at present, the wheelchair does not have the function of climbing stairs, and a power driving device which can drive the wheelchair to automatically climb the stairs needs to be designed.
In order to solve the problems, the embodiment designs a power driving device capable of assisting a wheelchair to climb stairs, the power driving device capable of assisting the wheelchair to climb the stairs comprises chassis which are symmetrical front and back and are arranged on the lower side of the wheelchair, brackets which are symmetrical front and back are fixedly arranged on the lower sides of the chassis on two sides, a driving cavity is arranged in each bracket, a motor is fixedly arranged in the rear wall of the driving cavity on the rear side, a driving shaft is fixedly arranged on an output shaft on the front side of the motor, a driving gear is fixedly arranged on the driving shaft, an auxiliary driving shaft is rotatably connected to the inner walls of the driving cavity on the front side and the rear side, a driven gear which is meshed with the driving gear is fixedly arranged on the auxiliary driving shaft on the rear side, a rotary drum is arranged between the brackets on two sides, the auxiliary driving shaft is fixedly connected with the rotary drum, and branches which, the mobile case is characterized in that a contact plate shaft is rotatably connected between the branches, a contact plate for contacting with stairs is fixedly arranged on the contact plate shaft, a climbing device for climbing stairs is arranged in the rotary drum and the branches, a moving chamber with a downward opening is arranged in the case, a moving case with symmetrical and opposite moving directions is slidably connected between the rear wall of the moving chamber and the front wall of the moving case, a moving device capable of moving back and forth is arranged in the case, a telescopic rod capable of stretching is arranged in the moving case, an anti-slip plate capable of pricking the ground is fixedly arranged on the lower side of the telescopic rod, and the moving case is internally provided with a lifting device capable of driving the telescopic rod to stretch and lift when moving.
The climbing device comprises a first meshing cavity which is symmetrically arranged in the rotary drum in the front-back direction, a fixed rod which is fixed on the inner wall of the driving cavity and stretches into the first meshing cavity is arranged in the auxiliary driving shaft, a first bevel gear is fixedly arranged on the fixed rod, a branch rotating shaft which stretches into the first meshing cavity is connected in the branch rotating shaft, a second bevel gear which is connected with the first bevel gear in a meshing mode is fixedly arranged on the branch rotating shaft, a second meshing cavity which is far away from the first meshing cavity is arranged in the branch, a contact plate shaft is rotatably connected in the second meshing cavity, a third bevel gear is fixedly arranged on the contact plate shaft, and the branch rotating shaft stretches into the second meshing cavity and a fourth bevel gear which is connected with the third bevel gear in a meshing mode is fixedly arranged on the branch rotating shaft.
Wherein, the moving device comprises a fifth bevel gear fixedly arranged on the auxiliary driving shaft, a transmission shaft is rotationally connected on the top wall of the driving cavity, a sixth bevel gear meshed with the fifth bevel gear is fixedly arranged on the transmission shaft, a belt cavity connected to the left side of the moving cavity is arranged in the machine case, the transmission shaft extends into the belt cavity, a left belt pulley is fixedly arranged on the transmission shaft, a belt pulley shaft is rotationally connected on the top wall of the moving cavity, a right belt pulley is fixedly arranged on the belt pulley shaft, a belt is connected between the left belt pulley and the right belt pulley, a rack plate is fixedly arranged on one side of the moving box at the front side and the rear side, which faces the middle of the moving cavity, a middle shaft is rotationally connected on the bottom wall of the moving cavity, middle gears meshed with the rack plates at the two sides are fixedly arranged on the middle shaft, and a, the lower side of the belt wheel shaft is fixedly provided with a crank, and the lower side of the crank is rotatably connected with a sliding push rod which is connected in the groove plate in a sliding manner.
Wherein, the lifting device comprises a transmission cavity which is arranged in the case and positioned at the upper side of the belt cavity, the transmission shaft extends into the transmission cavity and is rotationally connected in the top wall of the transmission cavity, a first gear is fixedly arranged on the transmission shaft, a rotating shaft which is rotationally connected in the bottom wall of the transmission cavity is symmetrically arranged in the transmission shaft in the front and back direction, a second gear which is engaged and connected with the first gear is fixedly arranged on the rotating shaft, a seventh bevel gear which is positioned at the upper side of the second gear is fixedly arranged on the rotating shaft, a spline outer shaft which is rotationally connected in the front and back symmetry is arranged in the right wall of the transmission cavity, an eighth bevel gear which is engaged and connected with the seventh bevel gear is fixedly arranged at the left side of the spline outer shaft, a third engaging cavity is arranged in the moving case, a spline inner shaft is rotationally connected in the right wall of, the spline inner shaft extends into the spline inner cavity and is connected with the spline inner cavity in a spline mode, a ninth bevel gear which is bilaterally symmetrical is fixedly arranged on the spline inner shaft in the third meshing cavity, a worm shaft is rotationally connected to the bottom wall of the third meshing cavity, an incomplete bevel gear which can be meshed with the ninth bevel gear is fixedly arranged on the upper side of the worm shaft, a telescopic cavity with a downward opening is arranged in the moving box, the telescopic rod is slidably connected into the telescopic cavity, a fourth meshing cavity which is connected to the left side of the telescopic cavity is arranged in the moving box, the worm shaft extends into the fourth meshing cavity and is rotationally connected to the bottom wall of the fourth meshing cavity, a worm is fixedly arranged on the worm shaft, a worm wheel shaft is rotationally connected to the rear wall of the fourth meshing cavity, and a worm wheel and a worm are fixedly arranged on the worm wheel shaft and connected with a, and the worm wheel is connected with the left side tooth surface of the telescopic rod in a meshed mode.
The invention has the beneficial effects that: compared with the traditional mode of climbing stairs with a wheelchair, firstly, the wheelchair disclosed by the invention is driven by electric power so as to reduce the manpower consumption, secondly, when climbing stairs, the surface of the contact plate is kept unchanged all the time, the contact with the step surface of the stairs is facilitated and the sliding is prevented, and finally, the wheelchair is driven by cyclic lifting and advancing to stably move forwards and upwards when climbing the stairs.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a power driving device for assisting a wheelchair to climb stairs according to the present invention;
FIG. 2 is a schematic view of the structure in the direction "A-A" in FIG. 1;
FIG. 3 is a schematic view of the structure in the direction "B-B" in FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;
FIG. 5 is a schematic view of the structure in the direction "D-D" in FIG. 1;
fig. 6 is a schematic view of the internal structure of the mobile box of fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1 to 6, for the sake of convenience of description, the following orientations are now defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a power driving device capable of assisting a wheelchair to climb stairs, which is further explained by combining the attached drawings of the invention:
the invention relates to a power driving device capable of assisting a wheelchair to climb stairs, which comprises chassis 11 which are symmetrical front and back and are arranged on the lower side of the wheelchair, brackets 68 which are symmetrical front and back are fixedly arranged on the lower sides of the chassis 11 on two sides, a driving cavity 48 is arranged in the brackets 68, a motor 67 is fixedly arranged in the rear wall of the driving cavity 48 on the rear side, a driving shaft 72 is fixedly arranged on an output shaft on the front side of the motor 67, a driving gear 70 is fixedly arranged on the driving shaft 72, an auxiliary driving shaft 46 is rotatably connected on the inner wall of the driving cavity 48 on the front and rear sides, a driven gear 71 which is engaged and connected with the driving gear 70 is fixedly arranged on the auxiliary driving shaft 46 on the rear side, a rotary drum 16 is arranged between the brackets 68 on two sides, the auxiliary driving shaft 46 is fixedly connected with the rotary drum 16, branch rods 17 which are distributed annularly and symmetrical front and rear are fixedly arranged on the rotary drum 16, the contact plate shaft 21 is fixedly provided with a contact plate 18 used for contacting with stairs, the rotary drum 16 and the branch rod 17 are internally provided with a climbing device 101 used for climbing stairs, the case 11 is internally provided with a moving cavity 32 with a downward opening, the rear wall and the front wall of the moving cavity 32 are slidably connected with moving boxes 12 which are symmetrical and have opposite moving directions, the case 11 is internally provided with a moving device 102 capable of driving the moving boxes 12 to move back and forth, the moving boxes 12 are internally provided with telescopic rods 14 capable of stretching, the lower sides of the telescopic rods 14 are fixedly provided with anti-skid plates 15 capable of pricking the ground, and the moving boxes 12 are internally provided with lifting devices 103 capable of driving the telescopic rods 14 to stretch and stretch so as to lift when the moving boxes 12 move.
According to the embodiment, the climbing device 101 is described in detail below, the climbing device 101 includes a first engaging cavity 43 disposed in the rotating cylinder 16 in a front-back symmetrical manner, a fixing rod 69 fixed on the inner wall of the driving cavity 48 and extending into the first engaging cavity 43 is disposed in the secondary driving shaft 46, a first bevel gear 50 is disposed on the fixing rod 69, a branch rod rotating shaft 19 extending into the first engaging cavity 43 is rotatably connected to the branch rod 17, a second bevel gear 44 engaged with the first bevel gear 50 is disposed on the branch rod rotating shaft 19, a second engaging cavity 23 far away from the first engaging cavity 43 is disposed in the branch rod 17, the contact plate shaft 21 is rotatably connected to the second engaging cavity 23, a third bevel gear 22 is disposed on the contact plate shaft 21, the branch rod rotating shaft 19 extends into the second engaging cavity 23, and a fourth bevel gear 20 engaged with the third bevel gear 22 is disposed on the branch rod rotating shaft 19, when the motor 67 is started, the driving shaft 72 is driven to rotate, the driving shaft 72 rotates to drive the auxiliary driving shaft 46 to rotate through the meshing of the driving gear 70 and the driven gear 71, so as to drive the rotary drum 16 to rotate, the rotary drum 16 rotates to drive the branch 17 to rotate, the branch 17 rotates to drive the branch rotary shaft 19 to rotate through the meshing of the second bevel gear 44 on the branch rotary shaft 19 and the first bevel gear 50, and the branch rotary shaft 19 rotates to drive the contact plate shaft 21 to rotate through the meshing of the fourth bevel gear 20 and the third bevel gear 22, so as to drive the contact plate 18 to rotate towards the opposite direction of the rotation of the rotary drum 16, so that the purpose of climbing stairs is achieved.
According to the embodiment, the details of the moving device 102 will be described below, the moving device 102 includes a fifth bevel gear 49 fixedly disposed on the secondary driving shaft 46, a transmission shaft 25 is rotatably connected to the top wall of the driving cavity 48, a sixth bevel gear 47 engaged with the fifth bevel gear 49 is fixedly disposed on the transmission shaft 25, a belt cavity 28 connected to the left side of the moving cavity 32 is disposed in the machine case 11, the transmission shaft 25 extends into the belt cavity 28, a left pulley 30 is fixedly disposed on the transmission shaft 25, a pulley shaft 39 is rotatably connected to the top wall of the moving cavity 32, a right pulley 38 is fixedly disposed on the pulley shaft 39, a belt 31 is connected between the left pulley 30 and the right pulley 38, a rack plate 13 is fixedly disposed on one side of the moving boxes 12 facing the middle of the moving cavity 32 on the front and rear sides, an intermediate shaft 37 is rotatably connected to the bottom wall of the moving cavity 32, the intermediate shaft 37 is fixedly provided with an intermediate gear 40 engaged with the rack plates 13 connected to both sides, the upper side of the rack plate 13 at the rear side is fixedly provided with a groove plate 34, the lower side of the pulley shaft 39 is fixedly provided with a crank 35, the lower side of the crank 35 is rotatably connected with a sliding push rod 36 connected in the groove plate 34 in a sliding manner, when the transmission shaft 25 rotates, the left pulley 30 can be driven to rotate, the left pulley 30 rotates to drive the right pulley 38 to rotate through the belt 31, the pulley shaft 39 rotates to drive the crank 35 to rotate, the crank 35 rotates to drive the sliding push rod 36 to rotate around the pulley shaft 39 and can move back and forth along the inner side of the groove plate 34 to drive the groove plate 34 to move left and right, the groove plate 34 moves left and right to drive the rack plates 13 to move, and the rack plates 13 at the other side can be driven to move towards the opposite direction through the, i.e. to bring the two side mobile boxes 12 into a cyclic reverse movement.
According to an embodiment, the lifting device 103 is described in detail below, the lifting device 103 includes a transmission cavity 24 disposed in the chassis 11 and located on an upper side of the belt cavity 28, the transmission shaft 25 extends into the transmission cavity 24 and is rotatably connected to a top wall of the transmission cavity 24, a first gear 54 is fixedly disposed on the transmission shaft 25, a rotation shaft 53 rotatably connected to a bottom wall of the transmission cavity 24 is symmetrically disposed in the transmission shaft 25 in a front-back direction, a second gear 51 engaged with the first gear 54 is fixedly disposed on the rotation shaft 53, a seventh bevel gear 52 located on an upper side of the second gear 51 is fixedly disposed on the rotation shaft 53, a spline outer shaft 27 symmetrically disposed in a front-back direction is rotatably connected to a right wall of the transmission cavity 24, an eighth bevel gear 26 engaged with the seventh bevel gear 52 is fixedly disposed on a left side of the spline outer shaft 27, a third engagement cavity 57 is disposed in the mobile box 12, a spline inner shaft 56 is rotationally connected to the right wall of the third meshing chamber 57, a spline inner chamber 55 with a right opening is arranged in the spline outer shaft 27, the spline inner shaft 56 extends into the spline inner chamber 55, the spline inner shaft 56 is in splined connection with the spline inner chamber 55, a ninth bevel gear 59 which is bilaterally symmetrical is fixedly arranged on the spline inner shaft 56 in the third meshing chamber 57, a bottom wall of the third meshing chamber 57 is rotationally connected with a shaft 66, an incomplete bevel gear 58 which can be in meshed connection with the ninth bevel gear 59 is fixedly arranged on the upper side of the worm shaft 66, a telescopic chamber 60 with a downward opening is arranged in the movable box 12, the telescopic rod 14 is slidably connected in the telescopic chamber 60, a fourth meshing chamber 64 connected to the left side of the telescopic chamber 60 is arranged in the movable box 12, the worm shaft 66 extends into the fourth meshing chamber 64 and is rotationally connected to the bottom wall of the fourth meshing chamber 64, a worm 65 is fixedly arranged on the worm shaft 66, a worm gear shaft 62 is rotatably connected to the rear wall of the fourth meshing cavity 64, a worm gear 63 is fixedly arranged on the worm gear shaft 62 and connected to the worm 65, the worm gear 63 is connected to the left side tooth surface of the telescopic rod 14 in a meshing manner, when the transmission shaft 25 rotates, the first gear 54 can be driven to rotate, the first gear 54 rotates to drive the second gears 51 at two sides to rotate through meshing, so as to drive the rotating shaft 53 to rotate, the rotating shaft 53 rotates to drive the spline outer shaft 27 to rotate through meshing of the seventh bevel gear 52 and the eighth bevel gear 26, the spline outer shaft 27 rotates to drive the spline inner shaft 56 to rotate through spline connection, the spline inner shaft 56 rotates to drive the incomplete bevel gear 58 to rotate through meshing of the ninth bevel gear 59 and the incomplete bevel gear 58, so as to drive the worm shaft 66 to rotate, the worm shaft 66 rotates to drive the worm gear shaft 62 to rotate through connecting the worm The engagement of which drives the telescopic rod 14 to move up and down.
The following detailed description of the steps of the power driving device for assisting the wheelchair to climb stairs will be made with reference to fig. 1 to 6: in the initial state, the movable box 12 on one side is located at the left limit position, and the movable box 12 on the other side is located at the right limit position.
When climbing stairs, the motor 67 is started to drive the driving shaft 72 to rotate, the driving shaft 72 drives the auxiliary driving shaft 46 to rotate through the meshing of the driving gear 70 and the driven gear 71, so as to drive the rotary drum 16 to rotate, the rotary drum 16 drives the branch rod 17 to rotate, the branch rod 17 rotates to drive the branch rod rotary shaft 19 to rotate through the meshing of the second bevel gear 44 on the branch rod rotary shaft 19 and the first bevel gear 50, the branch rod rotary shaft 19 rotates to drive the contact plate shaft 21 to rotate through the meshing of the fourth bevel gear 20 and the third bevel gear 22, so as to drive the contact plate 18 to rotate in the opposite direction of the rotation of the rotary drum 16, meanwhile, the auxiliary driving shaft 46 rotates to drive the transmission shaft 25 to rotate through the meshing of the fifth bevel gear 49 and the sixth bevel gear 47, the transmission shaft 25 rotates to drive the left belt wheel 30 to rotate, the left belt wheel 30 rotates to drive the right belt wheel 38 through the belt 31, the crank 35 rotates to drive the sliding push rod 36 to rotate around the pulley shaft 39 and move back and forth along the inner side of the groove plate 34 to drive the groove plate 34 to move left and right, the groove plate 34 moves left and right to drive the rack plate 13 to move left and right to drive the rack plate 13 on the other side to move in the opposite direction through the meshing of the rack plates 13 on both sides and the intermediate gear 40, i.e. to drive the moving boxes 12 on both sides to circularly move in the opposite direction, meanwhile, the transmission shaft 25 rotates to drive the first gear 54 to rotate, the first gear 54 rotates to drive the second gears 51 on both sides to rotate through meshing, so as to drive the rotating shaft 53 to rotate, the rotating shaft 53 rotates to drive the spline outer shaft 27 to rotate through the meshing of the seventh bevel gear 52 and the eighth bevel gear 26, the spline outer shaft 27 rotates to drive the spline inner shaft 56 to rotate through the spline, the spline inner shaft 56 rotates to drive the incomplete bevel The worm shaft 66 rotates and is connected with the worm gear of the worm wheel 63 through the worm 65 to drive the worm wheel shaft 62 to rotate, so that the worm wheel 63 is meshed with the left side tooth surface of the telescopic rod 14 to drive the telescopic rod 14 to move up and down, the device is enabled to rotate the branch rod 17 to enable the contact plate 18 to be in contact with the stairs, and meanwhile the device is lifted through stretching out of the telescopic rod 14 and is driven to move left.
The invention has the beneficial effects that: compared with the traditional mode of climbing stairs with a wheelchair, firstly, the wheelchair disclosed by the invention is driven by electric power so as to reduce the manpower consumption, secondly, when climbing stairs, the surface of the contact plate is kept unchanged all the time, the contact with the step surface of the stairs is facilitated and the sliding is prevented, and finally, the wheelchair is driven by cyclic lifting and advancing to stably move forwards and upwards when climbing the stairs.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (4)
1. The utility model provides a can assist power drive of wheelchair stair of climbing, includes the front and back symmetry and installs in the quick-witted case of wheelchair downside, its characterized in that: the lower sides of the machine cases on two sides are fixedly provided with front and back symmetrical supports, a driving cavity is arranged in each support, a motor is fixedly arranged in the rear wall of the driving cavity on the rear side, a driving shaft is fixedly arranged on an output shaft on the front side of the motor, a driving gear is fixedly arranged on the driving shaft, an auxiliary driving shaft is rotatably connected to the inner walls of the driving cavities on the front side and the rear side, a driven gear meshed with the driving gear is fixedly arranged on the auxiliary driving shaft on the rear side, a rotary drum is arranged between the supports on the two sides, the auxiliary driving shaft and the rotary drum are fixedly connected, branch rods which are distributed in an annular shape and are symmetrical in the front and the rear direction are fixedly arranged on the rotary drum, a contact plate shaft is rotatably connected between the branch rods on the front side and the rear side, a contact plate for contacting with stairs is fixedly arranged on the contact plate shaft, climbing devices for, the mobile case is characterized in that symmetrical mobile cases with opposite moving directions are connected in the rear wall and the front wall of the mobile cavity in a sliding mode, a mobile device capable of driving the mobile cases to move back and forth is arranged in the case, a telescopic rod capable of stretching is arranged in the mobile cases, an anti-slip plate capable of pricking the ground is fixedly arranged on the lower side of the telescopic rod, and a lifting device capable of driving the telescopic rod to stretch and stretch to lift when the mobile cases move is arranged in the mobile cases.
2. The power drive device of claim 1, wherein the power drive device is adapted to assist the wheelchair in climbing stairs, and comprises: climbing device includes that the front and back symmetry is located first meshing chamber in the rotary drum, be equipped with in the counter drive axle and be fixed in on the drive intracavity wall and stretch into the dead lever of first meshing intracavity, first bevel gear has set firmly on the dead lever, the branch pole internal rotation is connected with and stretches into the branch pole pivot of first meshing intracavity, set firmly the meshing in the branch pole pivot connect in first bevel gear's second bevel gear, be equipped with in the branch pole and keep away from the second meshing chamber in first meshing chamber, the contact plate axle rotate connect in the second meshing intracavity just the contact plate is epaxial third bevel gear has set firmly, the branch pole pivot stretches into in the second meshing intracavity just set firmly the meshing in the branch pole pivot in third bevel gear's fourth bevel gear.
3. The power drive device of claim 1, wherein the power drive device is adapted to assist the wheelchair in climbing stairs, and comprises: the moving device comprises a fifth bevel gear fixedly arranged on the auxiliary driving shaft, a transmission shaft is rotationally connected to the top wall of the driving cavity, a sixth bevel gear meshed with the fifth bevel gear is fixedly arranged on the transmission shaft, a belt cavity connected to the left side of the moving cavity is arranged in the machine case, the transmission shaft extends into the belt cavity, a left belt pulley is fixedly arranged on the transmission shaft, a belt pulley shaft is rotationally connected to the top wall of the moving cavity, a right belt pulley is fixedly arranged on the belt pulley shaft, a belt is connected between the left belt pulley and the right belt pulley, a rack plate is fixedly arranged on one side, facing the middle of the moving cavity, of the moving box on the front side and the rear side, an intermediate shaft is rotationally connected to the bottom wall of the moving cavity, intermediate gears meshed with the rack plates on the two sides are fixedly arranged on the intermediate shaft, and a, the lower side of the belt wheel shaft is fixedly provided with a crank, and the lower side of the crank is rotatably connected with a sliding push rod which is connected in the groove plate in a sliding manner.
4. The power drive device of claim 1, wherein the power drive device is adapted to assist the wheelchair in climbing stairs, and comprises: the lifting device comprises a transmission cavity which is arranged in the case and positioned on the upper side of the belt cavity, the transmission shaft extends into the transmission cavity and is rotatably connected into the top wall of the transmission cavity, a first gear is fixedly arranged on the transmission shaft, rotating shafts which are rotatably connected into the bottom wall of the transmission cavity are symmetrically arranged in the transmission shaft in a front-back manner, a second gear which is meshed and connected with the first gear is fixedly arranged on the rotating shafts, a seventh bevel gear which is positioned on the upper side of the second gear is fixedly arranged on the rotating shafts, spline outer shafts which are symmetrically arranged in a front-back manner are rotatably connected into the right wall of the transmission cavity, an eighth bevel gear which is meshed and connected with the seventh bevel gear is fixedly arranged on the left side of the spline outer shafts, a third meshing cavity is arranged in the moving case, a spline inner shaft is rotatably connected into the right wall of the, the spline inner shaft extends into the spline inner cavity and is connected with the spline inner cavity in a spline mode, a ninth bevel gear which is bilaterally symmetrical is fixedly arranged on the spline inner shaft in the third meshing cavity, a worm shaft is rotationally connected to the bottom wall of the third meshing cavity, an incomplete bevel gear which can be meshed with the ninth bevel gear is fixedly arranged on the upper side of the worm shaft, a telescopic cavity with a downward opening is arranged in the moving box, the telescopic rod is slidably connected into the telescopic cavity, a fourth meshing cavity which is connected to the left side of the telescopic cavity is arranged in the moving box, the worm shaft extends into the fourth meshing cavity and is rotationally connected to the bottom wall of the fourth meshing cavity, a worm is fixedly arranged on the worm shaft, a worm wheel shaft is rotationally connected to the rear wall of the fourth meshing cavity, and a worm wheel and a worm are fixedly arranged on the worm wheel shaft and connected with a, and the worm wheel is connected with the left side tooth surface of the telescopic rod in a meshed mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010923136.5A CN111973354A (en) | 2020-09-04 | 2020-09-04 | Power driving device capable of assisting wheelchair to climb stairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010923136.5A CN111973354A (en) | 2020-09-04 | 2020-09-04 | Power driving device capable of assisting wheelchair to climb stairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111973354A true CN111973354A (en) | 2020-11-24 |
Family
ID=73448634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010923136.5A Withdrawn CN111973354A (en) | 2020-09-04 | 2020-09-04 | Power driving device capable of assisting wheelchair to climb stairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111973354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846469A (en) * | 2023-02-02 | 2023-03-28 | 河北锐升起重机械有限公司 | Adjustable steel plate forming device |
-
2020
- 2020-09-04 CN CN202010923136.5A patent/CN111973354A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846469A (en) * | 2023-02-02 | 2023-03-28 | 河北锐升起重机械有限公司 | Adjustable steel plate forming device |
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Application publication date: 20201124 |