CN109199715B - Wheelchair that security performance is high - Google Patents
Wheelchair that security performance is high Download PDFInfo
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- CN109199715B CN109199715B CN201810855169.3A CN201810855169A CN109199715B CN 109199715 B CN109199715 B CN 109199715B CN 201810855169 A CN201810855169 A CN 201810855169A CN 109199715 B CN109199715 B CN 109199715B
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- rod
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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
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
- A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
- A61G5/042—Front wheel drive
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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
- A61G5/10—Parts, details or accessories
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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
- A61G2203/00—General characteristics of devices
- A61G2203/30—General characteristics of devices characterised by sensor means
- A61G2203/34—General characteristics of devices characterised by sensor means for pressure
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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
- A61G2203/00—General characteristics of devices
- A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
Abstract
The invention relates to a wheelchair with high safety performance, which comprises a main body, a push handle, two front wheels and two rear wheels, wherein the push handle is arranged on one side of the main body, the front wheels and the rear wheels are arranged below the main body, the rear wheels are arranged between the push handle and the front wheels, two control mechanisms are arranged on the front wheels, two speed limiting mechanisms are arranged on the rear wheels, the control mechanisms correspond to the front wheels one by one, the speed limiting mechanisms correspond to the rear wheels one by one, each control mechanism comprises a lifting plate, a support, a level gauge, a rotating shaft, a locking assembly and two power assemblies, each speed limiting mechanism comprises a detection assembly, a moving assembly, a connecting assembly and at least two speed limiting assemblies, each detection assembly comprises a fixed block, a moving block, a guide rod, a first spring, a connecting block and a pressure sensor, and the wheelchair with high safety performance can prevent a user from falling down through the control mechanisms, moreover, the speed limiting function is realized through the speed limiting mechanism.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a wheelchair with high safety performance.
Background
The medical equipment refers to instruments, equipment, appliances, materials or other articles which are used for human bodies singly or in combination and also comprises required software, the medical equipment is the most basic element of medical treatment, scientific research, teaching, institutions and clinical discipline work, namely comprises professional medical equipment and household medical equipment, wherein a wheelchair is one of the medical equipment, the wheelchair is an important tool for rehabilitation, and the wheelchair is not only a walking tool for physically disabled persons and mobility-handicapped persons, but also is more important for the physically disabled persons and the mobility-handicapped persons to carry out physical exercises and participate in social activities by means of the wheelchair.
When the existing wheelchair runs downwards on a slope, the body of a user can incline forwards, the user is easy to fall down, and moreover, when the existing wheelchair runs downwards on the slope, the speed is increased to a certain extent compared with the normal running speed due to inertia, and the safety is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the wheelchair with high safety performance is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a wheelchair with high safety performance comprises a main body, a push handle, two front wheels and two rear wheels, wherein the push handle is arranged on one side of the main body, the front wheels and the rear wheels are arranged below the main body, the rear wheels are arranged between the push handle and the front wheels, two control mechanisms are arranged on the front wheels, two speed limiting mechanisms are arranged on the rear wheels, the control mechanisms correspond to the front wheels one by one, and the speed limiting mechanisms correspond to the rear wheels one by one;
the control mechanism comprises a lifting plate, a support, a level, a rotating shaft, a locking assembly and two power assemblies, wherein the lifting plate and the rotating shaft are horizontally arranged below the main body, the support is vertically arranged below the lifting plate, the top end of the support is fixed to the bottom of the lifting plate, front wheels are arranged at the bottom end of the support, the front wheels are sleeved on the rotating shaft, the support is sleeved on the rotating shaft, the distance from two ends of the rotating shaft to one side, close to the push handle, of the main body is equal, the lifting plate is connected with the main body through the power assemblies, the level is arranged at the bottom of the main body, the two power assemblies are respectively arranged at two sides of the lifting plate, and the locking assembly is arranged on the support;
the speed limiting mechanism comprises a detection assembly, a moving assembly, a connecting assembly and at least two speed limiting assemblies, wherein the detection assembly comprises a fixed block, a moving block, a guide rod, a first spring, a connecting block and a pressure sensor, the fixed block is fixed at one end, close to the support, of the rotating shaft, the center of the fixed block is arranged on the axis of the rotating shaft, the guide rod is horizontally arranged, one end of the guide rod is fixed on the fixed block, the connecting block is fixed at the other end of the guide rod, the moving block is sleeved on the guide rod, one side, close to the connecting block, of the moving block is connected with the connecting block through the first spring, the first spring is sleeved on the guide rod, and the pressure.
Preferably, in order to facilitate the lifting of the front wheel, the power assembly comprises a polished rod, a fixed plate, a rotating motor, a roller and a connecting wire, the polished rod is vertically arranged, the top end of the polished rod is fixed at the bottom of the main body, the fixed plate is horizontally arranged at the bottom end of the polished rod, the lifting plate is sleeved on the polished rod, the rotating motor is fixed at the bottom of the lifting plate and is in transmission connection with the roller, one end of the connecting wire is fixed at the top of the fixed plate, the other end of the connecting wire is fixed on the roller, and the connecting wire is wound on the roller.
Preferably, the polish rod is coated with a lubricating oil in order to reduce friction between the polish rod and the lifter plate.
As preferred, in order to improve the stability of front wheel, locking Assembly includes locking motor, first lead screw, transmission piece and two locking units, the locking motor is fixed on the support, the vertical setting of first lead screw, the locking motor is connected with the top transmission of first lead screw, the bottom at first lead screw is established to the transmission piece cover, the transmission piece be equipped with the screw thread that first lead screw matches with the junction of first lead screw, the vertical cross sectional shape of transmission piece is isosceles triangle, the limit at the base place of the isosceles triangle cross-section of transmission piece is towards being close to the setting of locking motor direction, and two locking units set up the both sides at the transmission piece respectively.
As preferred, in order to improve stable effect, the locking unit includes second spring, solid fixed ring, carriage release lever, locking plate and control block, the carriage release lever level sets up, the one end that is close to the transmission piece at the carriage release lever is fixed to the control block, the vertical other end that sets up at the carriage release lever of locking plate, gu fixed ring overlaps and establishes on the carriage release lever, gu fixed ring fixes on the support, gu fixed ring passes through the second spring and is connected with the control block, the second spring cover is established on the carriage release lever, one side of keeping away from the transmission piece of locking plate is equipped with two at least notches, notch top-down evenly sets up on the locking plate, the notch matches with the fixed plate, the vertical cross-sectional shape of control block is right triangle, the limit and carriage release lever fixed connection at one of right angle limit place of the right angle triangle cross-section of control block, the limit at another right angle limit place of diameter triangle cross-section of .
Preferably, in order to realize the speed regulation function, the moving assembly comprises a lifting motor, a transmission plate, a second screw rod, a driving motor, a driving wheel, a driven wheel, a transmission belt, a transmission shaft and a support plate, wherein the second screw rod and the support plate are vertically arranged, the top end of the support plate is fixed at the bottom of the main body, the rear wheel is arranged at the bottom end of the support plate, the axis of the transmission shaft is parallel to the axis of the rotating shaft, the rear wheel is sleeved on the transmission shaft, the support plate is sleeved on the transmission shaft, the lifting motor is fixed on the support plate, the lifting motor is in transmission connection with the bottom end of the second screw rod, the transmission plate is vertically arranged at one side of the support plate far away from the rear wheel, the transmission plate is sleeved on the second screw rod, the joint of the transmission plate and the second screw rod is provided with threads matched with the second screw rod, the, the driving motor is in transmission connection with the driving wheel, the driven wheel is sleeved on the transmission shaft, the driving wheel and the driven wheel are respectively arranged at two ends of the inner side of the transmission belt, the speed limiting assemblies are uniformly arranged on the periphery of the transmission shaft in the circumferential direction, and the speed limiting assemblies are arranged on the driven wheel.
As preferred, in order to prevent that the drive belt is not hard up, coupling assembling includes electro-magnet, magnetism piece, fifth wheel, power rod and limiting plate, the power rod level sets up, the electro-magnet is fixed in the backup pad, the electro-magnet cover is established on the power rod, the vertical one end of fixing at the power rod of limiting plate, the fifth wheel sets up the other end at the power rod, the wheel face of fifth wheel is laminated with the inboard of drive belt, the magnetism piece sets up between electro-magnet and fifth wheel, the magnetism piece cover is established on the power rod, power rod and magnetism piece fixed connection, magnetism piece and electro-magnet laminating.
Preferably, in order to realize the function of speed reduction, the speed-limiting assembly comprises an air cylinder, a piston and a speed-limiting block, a sliding groove is formed in the periphery of the driving wheel, the air cylinder is fixed on the inner wall, close to the transmission shaft, of the sliding groove, the axis of the piston is perpendicular to that of the transmission shaft, an air cylinder sleeve is arranged at one end, close to the transmission shaft, of the piston, the speed-limiting block is fixed at the other end of the piston, the distance from one side, far away from the piston, of the speed-limiting block to the transmission shaft is equal to the distance from the driven wheel to the transmission shaft.
Preferably, in order to realize intellectualization, the bottom end of the main body is provided with a PLC, and the level gauge, the pressure sensor, the rotating motor, the locking motor, the driving motor, the lifting motor and the electromagnet are all electrically connected with the PLC.
Preferably, the drive motor is a servo motor in order to increase the drive force of the drive motor.
The wheelchair with high safety performance has the advantages that the control mechanism is used for preventing a user from falling down, compared with the existing control mechanism, the control mechanism is ingenious in structure and high in practicability, the speed limiting function is realized through the speed limiting mechanism, and compared with the existing speed limiting mechanism, the speed limiting mechanism is used for adjusting the speed in a mode of adjusting the rotating radius, and the adjusting effect is better.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the high safety wheelchair of the present invention;
FIG. 2 is a cross-sectional view of the high safety wheelchair of the present invention;
FIG. 3 is a schematic structural view of the control mechanism of the high safety wheelchair of the present invention;
FIG. 4 is a schematic structural view of a speed limiting mechanism of the high safety wheelchair of the present invention;
FIG. 5 is a schematic structural view of the power assembly of the high safety wheelchair of the present invention;
FIG. 6 is a schematic structural view of a locking unit of the high safety wheelchair of the present invention;
FIG. 7 is a schematic structural view of the moving components of the high safety wheelchair of the present invention;
FIG. 8 is a schematic structural view of the linkage assembly of the high safety wheelchair of the present invention;
FIG. 9 is a schematic structural view of the speed limit assembly of the high safety wheelchair of the present invention;
in the figure: 1. the automatic leveling device comprises a main body, a push handle, a front wheel, a rear wheel, a lifting plate, a support, a level gauge, a rotating shaft, a polished rod, a fixing plate, a rotating motor, a roller, a connecting line, a locking motor, a first screw rod, a transmission block, a second spring, a fixing ring, a movable rod, a locking plate, a control block, a lifting motor, a driving plate, a second screw rod, a driving motor, a driving wheel, a driven wheel, a driving belt, a driving shaft, a supporting plate, an electromagnet, a magnetic block, a connecting wheel, a power rod, a limiting plate, a cylinder, a piston, a speed limiting block, a fixing block, a moving block, a guide rod, a first spring, a speed limiting block, a connecting block and a pressure sensor.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-2, a wheelchair with high safety performance comprises a main body 1, a push handle 2, two front wheels 3 and two rear wheels 4, wherein the push handle 2 is arranged at one side of the main body 1, the front wheels 3 and the rear wheels 4 are both arranged below the main body 1, the rear wheels 4 are arranged between the push handle 2 and the front wheels 3, two control mechanisms are arranged on the front wheels 3, two speed limiting mechanisms are arranged on the rear wheels 4, the control mechanisms are in one-to-one correspondence with the front wheels 3, and the speed limiting mechanisms are in one-to-one correspondence with the rear wheels 4;
the wheelchair prevents a user from falling down through the control mechanism, and also realizes the function of limiting the speed through the speed limiting mechanism.
As shown in fig. 3, the control mechanism includes a lifting plate 5, a support 6, a level 7, a rotating shaft 8, a locking assembly and two power assemblies, wherein the lifting plate 5 and the rotating shaft 8 are both horizontally arranged below the main body 1, the support 6 is vertically arranged below the lifting plate 5, the top end of the support 6 is fixed at the bottom of the lifting plate 5, the front wheel 3 is arranged at the bottom end of the support 6, the front wheel 3 is sleeved on the rotating shaft 8, the support 6 is sleeved on the rotating shaft 8, the distances from the two ends of the rotating shaft 8 to one side of the main body 1 close to the push handle 2 are equal, the lifting plate 5 is connected with the main body 1 through the power assemblies, the level 7 is arranged at the bottom of the main body 1, the two power assemblies are respectively arranged at the two sides of the lifting plate 5, and the locking assembly is arranged on the support 6;
the lifting plate 5 moves downwards through the power assembly, so that the lifting plate 5 drives the support 6 to move downwards, the distance between the front wheel 3 and the main body 1 is increased by the driving of the rotating shaft 8, and the wheelchair is kept in a horizontal state when running downwards on a slope, and a user is prevented from falling down.
As shown in fig. 4, the speed limiting mechanism includes a detecting component, a moving component, a connecting component and at least two speed limiting components, the detecting component includes a fixed block 39, a moving block 40, a guide rod 41, a first spring 42, a connecting block 43 and a pressure sensor 44, the fixed block 39 is fixed at one end of the rotating shaft 8 close to the bracket 6, the center of the fixed block 39 is arranged on the axis of the rotating shaft 8, the guide rod 41 is horizontally arranged, one end of the guide rod 41 is fixed on the fixed block 39, the connecting block 43 is fixed at the other end of the guide rod 41, the moving block 40 is sleeved on the guide rod 41, one side of the moving block 40 close to the connecting block 43 is connected with the connecting block 43 through the first spring 42, the first spring 42 is sleeved on the guide rod 41, and the pressure sensor 44 is arranged at one.
The moving block 40 moves on the guide rod 41 under the action of centrifugal force by the rotation of the rotating shaft 8, and when the rotating speed reaches a certain rotating speed, the moving block 40 is in contact with the pressure sensor 44, so that the pressure sensor 44 detects the pressure, the moving speed of the wheelchair is calculated according to the pressure value detected by the pressure sensor 44, and the detection function is realized.
As shown in fig. 5, the power assembly includes a polish rod 9, a fixing plate 10, a rotating motor 11, a roller 12 and a connecting wire 13, the polish rod 9 is vertically disposed, the top end of the polish rod 9 is fixed at the bottom of the main body 1, the fixing plate 10 is horizontally disposed at the bottom end of the polish rod 9, the lifting plate 5 is sleeved on the polish rod 9, the rotating motor 11 is fixed at the bottom of the lifting plate 5, the rotating motor 11 is in transmission connection with the roller 12, one end of the connecting wire 13 is fixed at the top of the fixing plate 10, the other end of the connecting wire 13 is fixed on the roller 12, the connecting wire 13 is wound on the roller 12, the roller 12 is rotated by the operation of the rotating motor 11, the rotation of the roller 12 pulls the lifting plate 5 to move downwards through the connecting wire 13, the lifting plate 5 drives the front wheel 3 to move downwards through the bracket, when the rotating motor 11 runs reversely, the connecting wire 13 is loosened, the lifting plate 5 rises under the action of the gravity of the main body 1, so that the front wheel 3 is driven to rise, and the function of lifting the front wheel 3 is realized.
Preferably, in order to reduce the friction force between the polish rod 9 and the lifting plate 5, the polish rod 9 is coated with a lubricating oil, the lubricating oil has a lubricating function, and the friction force between the polish rod 9 and the lifting plate 5 can be reduced, so that the moving smoothness of the lifting plate 5 is improved.
Preferably, in order to improve the stability of the front wheel 3, the locking assembly includes a locking motor 14, a first lead screw 15, a transmission block 16 and two locking units, the locking motor 14 is fixed on the bracket 6, the first lead screw 15 is vertically arranged, the locking motor 14 is in transmission connection with the top end of the first lead screw 15, the transmission block 16 is sleeved at the bottom end of the first lead screw 15, a connecting part of the transmission block 16 and the first lead screw 15 is provided with a thread matched with the first lead screw 15, the vertical section of the transmission block 16 is in an isosceles triangle shape, the edge where the bottom edge of the isosceles triangle section of the transmission block 16 is located is arranged towards the direction close to the locking motor 14, the two locking units are respectively arranged at two sides of the transmission block 16, the transmission block 16 is lifted on the first lead screw 15 by the operation of the locking motor 14, and the locking units are operated by the lifting of the transmission block 16, the function of driving the locking unit to operate is realized.
As shown in fig. 6, the locking unit includes a second spring 17, a fixed ring 18, a movable rod 19, a locking plate 20 and a control block 21, the movable rod 19 is horizontally disposed, the control block 21 is fixed at one end of the movable rod 19 close to the transmission block 16, the locking plate 20 is vertically disposed at the other end of the movable rod 19, the fixed ring 18 is sleeved on the movable rod 19, the fixed ring 18 is fixed on the bracket 6, the fixed ring 18 is connected with the control block 21 through the second spring 17, the second spring 17 is sleeved on the movable rod 19, one side of the locking plate 20 away from the transmission block 16 is provided with at least two notches, the notches are uniformly disposed on the locking plate 20 from top to bottom, the notches are matched with the fixed plate 10, the vertical cross-section of the control block 21 is in the shape of a right triangle, the side of one of the right-angle side of the right-angle triangle cross-section of the control block 21, the edge at the other right-angle side of the diameter triangular section of the control block 21 is arranged towards the direction far away from the transmission block 16, when the transmission block 16 descends, the control block 21 is pushed to move in the reverse direction far away from the transmission block 16, the control block 21 drives the locking plate 20 to move through the moving rod 19 and drives the second spring 17 to compress, so that the fixing plate 10 is arranged in the notch, the polished rod 9 supports the support 6, when the transmission block 16 ascends, the locking plate 20 resets through the elastic action of the second spring 17, the fixing plate 10 is separated from the locking plate 20, and the stability is improved.
As shown in fig. 7, the moving assembly includes a lifting motor 22, a transmission plate 23, a second screw rod 24, a driving motor 25, a driving wheel 26, a driven wheel 27, a transmission belt 28, a transmission shaft 29 and a support plate 30, the second screw rod 24 and the support plate 30 are both vertically arranged, the top end of the support plate 30 is fixed at the bottom of the main body 1, the rear wheel 4 is arranged at the bottom end of the support plate 30, the axis of the transmission shaft 29 is parallel to the axis of the rotating shaft 8, the rear wheel 4 is sleeved on the transmission shaft 29, the support plate 30 is sleeved on the transmission shaft 29, the lifting motor 22 is fixed on the support plate 30, the lifting motor 22 is in transmission connection with the bottom end of the second screw rod 24, the transmission plate 23 is vertically arranged at one side of the support plate 30 far away from the rear wheel 4, the transmission plate 23 is sleeved on the second screw rod 24, a connecting portion of the transmission plate 23 and the second screw rod, the driving motor 25 is fixed on one side of the transmission plate 23 far away from the supporting plate 30, the driving motor 25 is in transmission connection with the driving wheel 26, the driven wheel 27 is sleeved on the transmission shaft 29, the driving wheel 26 and the driven wheel 27 are respectively arranged at two ends of the inner side of the transmission belt 28, the speed limiting assemblies are uniformly arranged on the periphery of the transmission shaft 29 in the circumferential direction, the speed limiting assemblies are arranged on the driven wheel 27, the second lead screw 24 rotates through the operation of the lifting motor 22, the transmission plate 23 moves downwards, the driving motor 25 is driven to move downwards, the driving motor 25 operates, the driving wheel 26 rotates, the driving wheel 26 drives the driven wheel 27 to rotate through the transmission belt 28, the transmission shaft 29 drives the rear wheel 4 to rotate, the lifting plate 5 moves to loosen the transmission belt 28, and the rotating speed of the rear wheel.
As shown in fig. 8, coupling assembling includes electro-magnet 31, magnetism piece 32, fifth wheel 33, power rod 34 and limiting plate 35, power rod 34 level sets up, electro-magnet 31 is fixed on backup pad 30, electro-magnet 31 cover is established on power rod 34, the vertical one end of fixing at power rod 34 of limiting plate 35, fifth wheel 33 sets up the other end at power rod 34, the wheel face of fifth wheel 33 and the inboard laminating of drive belt 28, magnetism piece 32 sets up between electro-magnet 31 and fifth wheel 33, magnetism piece 32 cover is established on power rod 34, power rod 34 and magnetism piece 32 fixed connection, magnetism piece 32 and electro-magnet 31 laminate, after drive belt 28 loosens, electro-magnet 31 circular telegram makes the effort that produces mutual repulsion between electro-magnet 31 and the magnetism piece 32 to make magnetism piece 32 drive fifth wheel 33 to keeping away from electro-magnet 31 direction removal, the belt 28 is tightened by the movement of the connecting wheel 33, preventing the belt 28 from loosening.
As shown in fig. 9, the speed limiting assembly includes a cylinder 36, a piston 37 and a speed limiting block 38, a slide groove is formed at the periphery of the driving wheel 26, the cylinder 36 is fixed on the inner wall of the chute near the transmission shaft 29, the axis of the piston 37 is vertical to the axis of the transmission shaft 29, the cylinder 36 is sleeved at one end of the piston 37 close to the transmission shaft 29, the speed limiting block 38 is fixed at the other end of the piston 37, the distance from the side of the speed limiting block 38 far away from the piston 37 to the transmission shaft 29 is equal to the distance from the driven wheel 27 to the transmission shaft 29, the side of the speed limiting block 38 far away from the piston 37 is matched with the driven wheel 27, the piston 37 drives the speed limiting block 38 to move away from the transmission shaft 29 through the operation of the air cylinder 36, the radius of the rotation of the driven wheel 27 driven by the driving belt 28 is increased by the movement of the speed limiting block 38, thereby reducing the speed at which the drive shaft 29 rotates and achieving the function of reducing the rotational speed of the rear wheel 4.
Preferably, in order to realize intellectualization, the bottom end of the main body 1 is provided with a PLC, the level 7, the pressure sensor 44, the rotating motor 11, the locking motor 14, the driving motor 25, the lifting motor 22 and the electromagnet 31 are all electrically connected with the PLC, the PLC controls the rotating motor 11 and the locking motor 14 to operate according to the detection result of the level 7, and the PLC controls the driving motor 25, the lifting motor 22 and the electromagnet 31 to operate according to the pressure detected by the pressure sensor 44, so that intellectualization is realized.
Preferably, in order to increase the driving force of the driving motor 25, the driving motor 25 is a servo motor, and the servo motor has a characteristic of strong driving force, so that the driving force of the driving motor 25 is increased.
The wheelchair prevents a user from falling down through the control mechanism, and also realizes the function of limiting the speed through the speed limiting mechanism.
Compared with the prior art, the wheelchair with high safety performance avoids a user from falling down through the control mechanism, compared with the existing control mechanism, the control mechanism is ingenious in structure and high in practicability, and moreover, the function of limiting speed is realized through the speed limiting mechanism.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A wheelchair with high safety performance comprises a main body (1), a push handle (2), two front wheels (3) and two rear wheels (4), wherein the push handle (2) is arranged on one side of the main body (1), the front wheels (3) and the rear wheels (4) are both arranged below the main body (1), and the rear wheels (4) are arranged between the push handle (2) and the front wheels (3), and the wheelchair is characterized in that the front wheels (3) are provided with two control mechanisms, the rear wheels (4) are provided with two speed limiting mechanisms, the control mechanisms correspond to the front wheels (3) one by one, and the speed limiting mechanisms correspond to the rear wheels (4) one by one;
the control mechanism comprises a lifting plate (5), a support (6), a level meter (7), a rotating shaft (8), a locking assembly and two power assemblies, wherein the lifting plate (5) and the rotating shaft (8) are horizontally arranged below a main body (1), the support (6) is vertically arranged below the lifting plate (5), the top end of the support (6) is fixed at the bottom of the lifting plate (5), front wheels (3) are arranged at the bottom end of the support (6), the front wheels (3) are sleeved on the rotating shaft (8), the support (6) is sleeved on the rotating shaft (8), the distance from the two ends of the rotating shaft (8) to one side, close to a pushing handle (2), of the main body (1 is equal, the lifting plate (5) is connected with the main body (1) through the power assemblies, the level meter (7) is arranged at the bottom of the main body (1), and the two power assemblies are respectively arranged at the two sides of the lifting plate (5), the locking assembly is arranged on the bracket (6);
the speed limiting mechanism comprises a detection component, a moving component, a connecting component and at least two speed limiting components, wherein the detection component comprises a fixed block (39), a moving block (40), a first spring (42), a connecting block (43) and a pressure sensor (44), the fixed block (39) is fixed at one end of a rotating shaft (8) close to a support (6), the center of the fixed block (39) is arranged on the axis of the rotating shaft (8), the moving block (40) is horizontally arranged, one end of the moving block (40) is fixed on the fixed block (39), the connecting block (43) is fixed at the other end of the moving block (40), the moving block (40) is sleeved on the moving block (40), one side of the moving block (40) close to the connecting block (43) is connected with the connecting block (43) through the first spring (42), and the first spring (42) is sleeved on the moving block (40), the pressure sensor (44) is arranged on one side of the connecting block (43) close to the moving block (40);
the locking assembly comprises a locking motor (14), a first screw rod (15), a transmission block (16) and two locking units, the locking motor (14) is fixed on the support (6), the first screw rod (15) is vertically arranged, the locking motor (14) is in transmission connection with the top end of the first screw rod (15), the transmission block (16) is sleeved at the bottom end of the first screw rod (15), a connection part of the transmission block (16) and the first screw rod (15) is provided with a thread matched with the first screw rod (15), the vertical section of the transmission block (16) is in an isosceles triangle shape, the side where the bottom side of the isosceles triangle section of the transmission block (16) is located is arranged towards the direction close to the locking motor (14), and the two locking units are respectively arranged on two sides of the transmission block (16);
the locking unit comprises a second spring (17), a fixing ring (18), a moving rod (19), a locking plate (20) and a control block (21), the moving rod (19) is horizontally arranged, the control block (21) is fixed at one end, close to the transmission block (16), of the moving rod (19), the locking plate (20) is vertically arranged at the other end of the moving rod (19), the fixing ring (18) is sleeved on the moving rod (19), the fixing ring (18) is fixed on the support (6), the fixing ring (18) is connected with the control block (21) through the second spring (17), the second spring (17) is sleeved on the moving rod (19), one side, far away from the transmission block (16), of the locking plate (20) is provided with at least two notches, the notches are evenly arranged on the locking plate (20) from top to bottom, and are matched with the fixing plate (10), the vertical cross section of the control block (21) is in the shape of a right-angled triangle, the side of one right-angled side of the cross section of the right-angled triangle of the control block (21) is fixedly connected with the moving rod (19), and the side of the other right-angled side of the cross section of the diameter triangle of the control block (21) is arranged in the direction far away from the transmission block (16);
the movable assembly comprises a lifting motor (22), a transmission plate (23), a second screw rod (24), a driving motor (25), a driving wheel (26), a driven wheel (27), a transmission belt (28), a transmission shaft (29) and a supporting plate (30), wherein the second screw rod (24) and the supporting plate (30) are vertically arranged, the top end of the supporting plate (30) is fixed at the bottom of the main body (1), the rear wheel (4) is arranged at the bottom end of the supporting plate (30), the axis of the transmission shaft (29) is parallel to the axis of the rotating shaft (8), the rear wheel (4) is sleeved on the transmission shaft (29), the supporting plate (30) is sleeved on the transmission shaft (29), the lifting motor (22) is fixed on the supporting plate (30), the lifting motor (22) is in transmission connection with the bottom end of the second screw rod (24), the transmission plate (23) is vertically arranged on one side, far away from the rear wheel (4), of the supporting plate (30), the transmission plate (23) is sleeved on the second screw rod (24), a connecting part of the transmission plate (23) and the second screw rod (24) is provided with a thread matched with the second screw rod (24), the driving motor (25) is fixed on one side of the transmission plate (23) far away from the support plate (30), the driving motor (25) is in transmission connection with the driving wheel (26), the driven wheel (27) is sleeved on the transmission shaft (29), the driving wheel (26) and the driven wheel (27) are respectively arranged at two ends of the inner side of the transmission belt (28), the speed limiting assemblies are uniformly arranged on the periphery of the transmission shaft (29) in the circumferential direction, and the speed limiting assemblies are arranged on the driven wheel (27);
the connecting assembly comprises an electromagnet (31), a magnetic block (32), a connecting wheel (33), a power rod (34) and a limiting plate (35), wherein the power rod (34) is horizontally arranged, the electromagnet (31) is fixed on a supporting plate (30), the electromagnet (31) is sleeved on the power rod (34), the limiting plate (35) is vertically fixed at one end of the power rod (34), the connecting wheel (33) is arranged at the other end of the power rod (34), the wheel surface of the connecting wheel (33) is attached to the inner side of a driving belt (28), the magnetic block (32) is arranged between the electromagnet (31) and the connecting wheel (33), the magnetic block (32) is sleeved on the power rod (34), the power rod (34) is fixedly connected with the magnetic block (32), and the magnetic block (32) is attached to the electromagnet (31);
the speed limiting assembly comprises a cylinder (36), a piston (37) and a speed limiting block (38), a sliding groove is formed in the periphery of the driving wheel (26), the cylinder (36) is fixed on the inner wall, close to the transmission shaft (29), of the sliding groove, the axis of the piston (37) is perpendicular to that of the transmission shaft (29), the cylinder (36) is sleeved at one end, close to the transmission shaft (29), of the piston (37), the speed limiting block (38) is fixed at the other end of the piston (37), the distance from one side, far away from the piston (37), of the speed limiting block (38) to the transmission shaft (29) is equal to the distance from the driven wheel (27) to the transmission shaft (29), and the side, far away from the piston (37), of the speed limiting block (38) is matched with the driven wheel (.
2. The wheelchair with high safety performance as claimed in claim 1, wherein the power assembly comprises a polished rod (9), a fixed plate (10), a rotating motor (11), a roller (12) and a connecting wire (13), the polished rod (9) is vertically arranged, the top end of the polished rod (9) is fixed at the bottom of the main body (1), the fixed plate (10) is horizontally arranged at the bottom end of the polished rod (9), the lifting plate (5) is sleeved on the polished rod (9), the rotating motor (11) is fixed at the bottom of the lifting plate (5), the rotating motor (11) is in transmission connection with the roller (12), one end of the connecting wire (13) is fixed at the top of the fixed plate (10), the other end of the connecting wire (13) is fixed on the roller (12), and the connecting wire (13) is wound on the roller (12).
3. The wheelchair of claim 2, wherein the polish rod (9) is coated with a lubricant.
4. The wheelchair with high safety performance as claimed in claim 1, wherein a PLC is arranged at the bottom end of the main body (1), and the level gauge (7), the pressure sensor (44), the rotating motor (11), the locking motor (14), the driving motor (25), the lifting motor (22) and the electromagnet (31) are electrically connected with the PLC.
5. The wheelchair of claim 1, wherein the drive motor (25) is a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810855169.3A CN109199715B (en) | 2018-07-31 | 2018-07-31 | Wheelchair that security performance is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810855169.3A CN109199715B (en) | 2018-07-31 | 2018-07-31 | Wheelchair that security performance is high |
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| Publication Number | Publication Date |
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| CN109199715A CN109199715A (en) | 2019-01-15 |
| CN109199715B true CN109199715B (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810855169.3A Active CN109199715B (en) | 2018-07-31 | 2018-07-31 | Wheelchair that security performance is high |
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| CN (1) | CN109199715B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602549A (en) * | 2019-01-30 | 2019-04-12 | 广州市淞滨工程技术有限公司 | A kind of device instead of walk easy to use and reliable for intelligent medical |
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| JP6268611B2 (en) * | 2015-06-08 | 2018-01-31 | 株式会社カワムラサイクル | wheelchair |
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| CN101953739A (en) * | 2010-07-15 | 2011-01-26 | 上海大学 | Bidirectional speed-restriction anti-lock device of wheelchair |
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| CN109199715A (en) | 2019-01-15 |
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Effective date of registration: 20200804 Address after: No.502, building 18, phase II, China Merchants Beigu Bay, Jingkou District, Zhenjiang City, Jiangsu Province, 212000 Applicant after: Tang Xingyu Applicant after: Sun Jian Address before: 518000 Guangdong city of Shenzhen province Nanshan District Nantou street, Nanshan Software Park East Tower room 1702 Applicant before: SHENZHEN JIUPIN AIR PURIFICATION TECHNOLOGY Co.,Ltd. |
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