CN112168629A

CN112168629A - Help old and prevent falling car

Info

Publication number: CN112168629A
Application number: CN202011006306.XA
Authority: CN
Inventors: 李小兵; 蒙海龙; 王睿泽; 石志新; 聂方军; 钟泓霖; 陈勇平
Original assignee: Nanchang University
Current assignee: Nanchang University
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-01-05

Abstract

The invention discloses an old-age-assistant anti-falling vehicle which comprises an upper end supporting assembly, an angle adjusting assembly, a bottom moving assembly and a seat assembly, wherein the upper end supporting assembly is connected with the seat assembly; the upper end supporting assembly is used for supporting the old and avoiding the old from falling down to the front, left, right and back directions; the bottom motion assembly is used for driving the anti-falling vehicle to move back and forth; the angle adjusting assembly is arranged on the upper surface of the bottom moving assembly, the upper end of the angle adjusting assembly is fixedly connected with the lower surface of the upper end supporting assembly, and the angle adjusting assembly can rotate around the bottom moving assembly to drive the upper end supporting assembly to rotate; the anti-falling vehicle is characterized in that the seat assembly is also arranged on the upper surface of the bottom movement assembly, the seat assembly can open and close the seat according to the change of the gravity center of the old people, and the upper end supporting assembly, the angle adjusting assembly, the bottom movement assembly and the seat assembly are matched with each other.

Description

Help old and prevent falling car

Technical Field

The invention relates to the technical field of an old-age assisting device, in particular to an old-age assisting and anti-falling vehicle.

Background

In the current society, the number of elderly people living alone is constantly rising, and when the elderly people live alone, various potential safety hazards can appear when walking at home, the elderly people can cause serious injury to their bodies after falling down, and the elderly people need a device to ensure the safety of daily walking. The existing anti-falling device mainly comprises a crutch, an anti-falling shoe and an anti-falling protective garment. The crutch can play a certain protection role, but does not have a high safety factor; the anti-falling shoes are provided with a gravity center adjusting part, but the safety of the old cannot be ensured; the anti-falling protective clothing can ensure that the old people have safe protection when falling down, but does not have a gravity center adjusting part. Therefore, a walking aid anti-falling device with a gravity center adjusting function and a safety protection function is urgently needed.

Disclosure of Invention

The invention aims to provide a senior-assistant crash-proof vehicle aiming at the defects and the problems in the prior art. An old-aged people-assistant anti-falling vehicle comprises an upper end supporting assembly, an angle adjusting assembly, a bottom moving assembly and a seat assembly; the upper end supporting assembly is used for supporting the old and avoiding the old from falling down to the front, left, right and back directions; the bottom motion assembly is used for driving the anti-falling vehicle to move back and forth; the angle adjusting assembly is arranged on the upper surface of the bottom moving assembly, the upper end of the angle adjusting assembly is fixedly connected with the lower surface of the upper end supporting assembly, and the angle adjusting assembly can rotate around the bottom moving assembly to drive the upper end supporting assembly to rotate; the seat assembly is also mounted on the upper surface of the bottom motion assembly, and the seat assembly can be opened and closed according to the change of the gravity center of the old.

The utility model provides a further scheme is, upper end supporting component includes upper portion panel, support arm and back, and the quantity of support arm has two and installs in the both ends of upper portion panel, and the one end that the upper portion panel was kept away from to the support arm is provided with the back that is used for supporting the old man back, be provided with the back controller in the support arm, the rotation and the locking of back are used for controlling to the back controller.

The further scheme is, the bottom motion subassembly includes driving motor, bottom panel, panel beating backup pad, drive wheel and universal wheel, and the quantity of panel beating backup pad has two, and the downward bending type cavity in panel beating backup pad both ends, and the panel beating backup pad is installed in the both ends of bottom panel, and the universal wheel is installed at bottom panel both ends, and the one end roll connection that the bottom panel was kept away from to the panel beating backup pad has the drive wheel, installs driving motor in the cavity of panel beating backup pad, and driving motor is used for the drive wheel rotatory.

A further scheme is, angle adjusting component includes electric putter, support pipe, support side pipe, and the lower extreme that supports side pipe and support pipe all rotates with bottom panel upper surface middle part to be connected, and the upper end that supports side pipe and support pipe all with upper portion panel fixed connection, the quantity that supports the pipe has two and sets up in support side pipe both ends, and electric putter installs the upper surface in the panel beating backup pad aslope, and electric putter and support pipe one-to-one, electric putter's flexible end and support pipe lower extreme rotate to be connected.

The seat component comprises a steering engine, a rocker slider connecting rod, a sliding block, a bearing seat and a profile frame, wherein two profile frames are arranged on the upper surface of each metal plate supporting plate, the steering engine is arranged between the profile frames, grooves are formed in the front side, the rear side, the left side and the right side of each profile frame, the bearing seat is arranged at the bottom end of the groove in the front side of each profile frame, the sliding block is connected to the middle upper part in the groove in the left side and the right side of each profile frame in a sliding mode, one end of the rocker is connected with the bearing seat in a rolling mode, the other end of the rocker is connected with the rocker slider connecting rod in a rotating mode, one end, far away from the rocker, of.

The utility model provides a further scheme is, the back controller includes the handle, a spring, the dog, the cam, the motion pole, incomplete gear piece, gear and lug, motion pole both ends difference fixedly connected with lug and incomplete gear piece, the dog is run through at the motion pole middle part, the spring cover is established on the motion pole, spring one end and the bellying fixed connection on the motion pole, the spring other end and dog fixed connection, install the gear in the one end of keeping away from the upper portion panel in the support arm, the gear is used for driving the back rotation, the handle is used for controlling the rotatory extrusion lug of cam, drive the motion pole to keeping away from the motion of gear one end, make incomplete gear piece and gear break away from mutually, after the cam does not extrude the lug, the spring resets and drives the motion pole to the one end motion that is close to the gear, incomplete.

The further scheme is that the seat is made of canvas which has a soft effect, and when the old people tip backwards, the old people can be supported and prevented from being injured.

The further scheme is that the output end of the driving motor is fixedly connected with a motion transmission shaft I, one end, far away from the rotary driving motor, of the motion transmission shaft I is in interference fit with a bevel gear I, a motion transmission shaft II is inserted in the middle of the driving wheel, one end, far away from the bevel gear II, of the motion transmission shaft II penetrates through the metal plate supporting plate and then is in interference fit with a bevel gear II, and the bevel gear I is in meshed connection with the bevel gear II.

In a further scheme, the upper surface of the supporting arm is provided with a elbow supporting block and a curved supporting plate.

Compared with the prior art, the invention has the beneficial effects that:

(1) the upper portion panel of upper end supporting component can prevent that the old man from falling forward, and the handrail frame of upper portion panel is convenient for the old man to promote to prevent that the car of falling moves ahead simultaneously, and the support arm can prevent that the old man both sides from falling down, and the elbow supporting shoe and the bent shape backup pad of installation can be used for supporting the arm and the elbow of old man on the support arm simultaneously, and the back can prevent that the old man from falling down backward.

(2) Through the mutual matching of the handle, the cam, the moving rod, the spring, the convex block, the stop block, the incomplete gear block, the gear and the backrest, when the cam extrudes the convex block to drive the moving rod to move towards one end far away from the gear, the incomplete gear block is separated from the gear, and at the moment, the rotating arm can be rotated to adjust the angle of the backrest; after the cam extrudees the lug, the spring resets and drives the motion pole to the one end motion of being close to the gear, and incomplete gear piece meshes with the gear mutually, and the back can not rotate this moment, can play the effect of supporting the old man back, prevents that the old man from falling backward.

(3) When the old people tip over backward due to instability of the gravity center, the driving motor is controlled to drive the anti-falling vehicle to move backward, so that the gravity center of the anti-falling vehicle and the gravity center of the old people are projected on the same point, the effect of adjusting the gravity center of the anti-falling vehicle is achieved, and the anti-falling vehicle is prevented from tipping; meanwhile, the electric push rod is controlled to stretch to drive the supporting round pipe and the supporting square pipe to rotate forwards, so that the backrest pushes the old to move forwards, the system is quickly balanced, the old is prevented from falling down, and the walking safety of the old is protected.

(4) When the backrest does not support the old man, the metal plate connecting plate can be driven to rotate through the steering engine of the control seat assembly, the rocker is driven to rotate, the rocker drives the rocker slider connecting rod to rotate, the rocker slider connecting rod is rotated to form the seat after being horizontal to the horizontal plane, the rocker slider connecting rod and the profile frame form a stable triangular structure at the moment, the old man is supported, and the safety of the old man is further protected.

Drawings

FIG. 1 is a first crash-proof vehicle configuration of the present invention;

FIG. 2 is a second structure of the crash-proof vehicle of the present invention;

FIG. 3 is a block diagram of the back controller of the present invention;

FIG. 4 is a block diagram of the bottom motion assembly of the present invention;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 4;

FIG. 6 is a block diagram of the seat assembly of the present invention;

reference numerals: the device comprises a bottom panel 1, a universal wheel 2, a sheet metal supporting plate 3, a driving motor 4, a driving wheel 5, a motion transmission shaft I6, a bevel gear I7, a motion transmission shaft II 8, a bevel gear II 9, a cavity 10, a steering engine 11, a connecting plate 12, a sheet metal connecting plate 13, a rocker 14, a steering engine fixing plate 15, a slider 16, an angle code 17, a section frame 18, a rocker slider connecting rod 19, a canvas 20, a section 21, a bearing seat 22, a supporting circular tube 23, an electric push rod 24, a supporting block 25, a connecting block 26, a fixing block 27, a supporting square tube 28, a handrail frame 29, an upper panel 30, a supporting arm 31, an upper cover plate 32, a lower cover plate 33, a rotating arm 34, a backrest 35, an elbow supporting block 36, a curved supporting plate 37, a backrest controller 38, a handle 39, a cam 40, a spring 41, a motion rod 42, a stop block 43.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings 1 to 6.

Referring to fig. 1, 2, 4 and 5, an old-person assistant crash-proof vehicle comprises an upper end supporting assembly, an angle adjusting assembly, a seat assembly and a bottom moving assembly. The bottom motion assembly comprises a bottom panel 1, universal wheels 2, sheet metal support plates 3, a driving motor 4, a driving wheel 5, a motion transmission shaft I6, a bevel gear I7, a motion transmission shaft II 8 and a bevel gear II 9, the number of the sheet metal support plates 3 is two, two ends of each sheet metal support plate 3 are bent downwards to form a cavity 10 around the wall, the two sheet metal support plates 3 are fixedly connected with two ends of the bottom panel 1, the universal wheels 2 are installed at two ends of the bottom panel 1, the driving motor 4 is installed in the cavity 10 at one end of each sheet metal support plate 3 far away from the bottom panel 1, the output end of each driving motor 4 is fixedly connected with the motion transmission shaft I6, the bevel gear I7 is installed at one end of each motion transmission shaft I6 far away from the driving motor 4, the bevel gear I7 is connected with the bevel gear II 9 in a meshing manner, the motion transmission shaft II 8 is, through the meshing transmission of bevel gear I7 and bevel gear II 9, driving motor 4 can drive wheel 5 and rotate, and the driving is prevented falling the car back-and-forth movement.

Referring to fig. 1, 2 and 6, in this embodiment, a seat assembly is installed in the middle of the upper surface of the sheet metal supporting plate 3, and the seat assembly includes a steering engine 11, a connecting plate 12, a sheet metal connecting plate 13, a rocker 14, a steering engine fixing plate 15, a slider 16, an angle brace 17, a profile frame 18, a rocker slider connecting rod 19, a canvas 20, a profile 21 and a bearing seat 22. The upper surface of each sheet metal supporting plate 3 is provided with two section bar frames 18 through an angle bracket 17, the top ends of the section bar frames 18 are fixedly connected together through section bars 21, the front side, the rear side, the left side and the right side of each section bar frame 18 are provided with grooves, a steering engine fixing plate 15 is arranged between the two section bar frames 18, a steering engine 11 is arranged on the steering engine fixing plate 15, the output end of the steering engine 11 is fixedly connected with a connecting plate 12, the steering engine 11 can accurately control the rotation angle of the connecting plate 12, the connecting plate 12 is shaped like a Chinese character 'ji', the middle part of one end of the connecting plate 12 far away from the steering engine 11 is fixedly connected with a sheet metal connecting plate 13, the two ends of the sheet metal connecting plate 13 are fixedly connected with rockers 14, the bottom ends of the rockers 14 are in rolling connection with bearings in the bearing seats 22, the, the sliding blocks 16 are arranged at the middle upper part of the section bar frame 18 and are connected with the grooves on the left side and the right side of the section bar frame 18 in a sliding way, and canvas 20 is arranged between the two rocker sliding block connecting rods 19. When the seat is used, the steering engine 11 drives the rocker 14 to rotate around the bearing seat 22, the rocker 14 drives the rocker slider connecting rod 19 to rotate, the rocker slider connecting rod 19 reaches a preset position, the canvas 20 arranged on the upper surfaces of the two rocker slider connecting rods 19 is parallel to the horizontal plane to form the seat, the canvas 20 of the seat assembly on the two sheet metal supporting plates 3 are combined together, and at the moment, the rocker 14, the rocker slider connecting rod 19 and the section bar frame 18 form a stable triangular structure; when the seat is not used, the steering engine 11 drives the rocker 14 to rotate reversely, so as to drive the rocker slider connecting rod 19 to move towards the direction parallel to the section bar frame 18, and the seat is folded.

Referring to fig. 1 and 2, in the present embodiment, an angle adjusting assembly is installed between an upper surface of one end of the sheet metal support plate 3, which is far away from the driving wheel 5, and an upper surface of the bottom panel 1, and the angle adjusting assembly includes two supporting circular tubes 23, two electric push rods 24, a supporting block 25, a connecting block 26, a fixing block 27, and two supporting square tubes 28, wherein the two electric push rods 24 are respectively installed on the upper surface of one end of the sheet metal support plate 3, which is far away from the driving wheel 5, the middle portion of the upper surface of the bottom panel 1 is rotatably connected with the supporting square tubes 28 through the supporting block 25, the two ends of the upper surface of the bottom panel 1, which are located on the supporting square tubes 28, are rotatably connected with the supporting circular tubes 23 through the supporting block 25, the upper ends of the supporting circular tubes 23 and the supporting square tubes 28 are fixedly connected with, the one end at connecting block 26 is installed to fixed block 27, and the one end that fixed block 27 was kept away from to connecting block 26 with support pipe 23 fixed connection, thereby the flexible pulling fixed block 27 of electric putter 24 drives and supports pipe 23 and rotate around supporting shoe 25 to reach the effect of adjusting the upper end supporting component angle.

Referring to fig. 1, 2 and 3, in the present embodiment, the upper end support assembly includes an armrest frame 29, an upper panel 30, a support arm 31, a rotating arm 34, a backrest 35, an elbow support block 36, a curved support plate 37 and a backrest controller 38, the upper panel 30 is fixedly connected to the support circular tube 23 and one end of the support square tube 28 far away from the bottom panel 1, the armrest frame 29 is installed in the middle of the upper panel 30, two support arms 31 are installed at two ends of the upper panel 30, one end of the support arm 31 far away from the upper panel 30 extends horizontally towards the driving wheel 5, and the support arm 31 is assembled by an upper cover plate 32 and a lower cover plate 33 through bolt connection. A backrest controller 38 is installed in the supporting arm 31, the backrest controller 33 comprises a handle 39, a cam 40, a spring 41, a moving rod 42, a stop block 43, a convex block 47, an incomplete gear block 44 and a gear 45, the handle 39 is fixedly connected with the cam 40, a rotating shaft is inserted in the middle of the cam 40 and is in rolling connection with the lower cover plate 33, the moving rod 42 and the stop block 43 are installed in a cavity enclosed by the upper cover plate 32 and the lower cover plate 33, an annular convex part is arranged on the moving rod 42, the spring 41 is sleeved on the moving rod 42, one end of the spring 41 is fixedly connected with the stop block 43, the other end of the spring 41 is fixedly connected with the annular convex part on the moving rod 42, the spring 41 is in a compression state, one end of the moving rod 42 is fixedly connected with the convex block 47. A gear 45 is arranged inside one end of the supporting arm 31 far away from the cam 40, a rotating shaft is inserted in the middle of the gear 45, a rotating arm 34 is installed on the rotating shaft of the gear 45, and a backrest 35 is fixedly connected to one end of the rotating arm 34 far away from the gear 45. The cam 40 can be driven to rotate by rotating the handle 39, when the cam 40 rotates to press the convex block 47, the spring 41 is further compressed, and the moving rod 42 drives the incomplete gear block 44 to move towards one end close to the cam 40, the gear teeth of the incomplete gear block 44 are separated from the gear teeth of the gear 45, the gear 45 can rotate, the backrest 35 can rotate around the rotating shaft of the gear 45, and the angle of the backrest 35 can be adjusted by rotating the rotating arm 34; when the cam 40 does not press the convex block 47, under the reset action of the spring 41, the incomplete gear block 44 moves to one end far away from the cam 40, the gear teeth of the incomplete gear block 44 are meshed with the gear teeth of the gear 45, the gear 45 cannot rotate, the backrest 35 cannot rotate around the rotating shaft of the gear 45, the position of the backrest 35 is fixed, and at the moment, the backrest 35 can play a certain supporting role to prevent the old from falling backwards.

Further, a controller 46 is installed on the upper surface of one end, close to the upper panel 30, of the supporting arm 31, a single chip microcomputer is installed in the controller 46, the output end of the single chip microcomputer is in communication connection with the electric push rod 24, the steering engine 11 and the driving motor 4, the input end of the single chip microcomputer is in communication connection with a gyroscope, a gyroscope sensor and an acceleration sensor are integrated in the gyroscope, and the gyroscope sensor and the acceleration sensor are used for detecting the change of the gravity center of the old people and are common general knowledge in the field.

The working principle of the invention is as follows: when the multifunctional supporting arm is used, the gyroscope worn by the old is positioned in a space enclosed by the upper panel 30, the supporting arm 31 and the backrest 35, the old faces the upper panel 30, the upper end supporting assembly plays a role of supporting the old, the old can hold the armrest frame 29 with hands and push the anti-falling vehicle to move forwards, the elbow supporting block 36 and the curved supporting plate 37 can be used for supporting the arms and elbows of the old, and the old can adjust the supporting angle of the backrest 35 by rotating the handle 39; when the gravity center of the old man is unstable and inclines backwards, a gyroscope worn by the old man detects that the human body inclines backwards, a signal is sent to a single chip microcomputer in a controller, the single chip microcomputer controls a driving motor 4, the driving motor 4 drives an anti-falling vehicle to move backwards, the gravity center of the anti-falling vehicle and the gravity center of the old man are projected on the same point, and the anti-falling vehicle is prevented from overturning; meanwhile, the electric push rod 24 is controlled to stretch, the supporting round pipe 23 and the supporting square pipe 28 are driven to rotate forwards, the backrest 35 connected with the upper panel 30 pushes the old to move forwards, the system is quickly balanced, and the old is prevented from falling down; if the back 35 does not support the old man, the steering wheel 11 of seat subassembly can drive the panel beating connecting plate 13 and rotate to this drives rocker 14 and rotates, and rocker 14 drives rocker slider connecting rod 19 and rotates, makes rocker slider connecting rod 19 rotate and form the seat with horizontal level back, and rocker 14, rocker slider connecting rod 19 and section bar frame 18 form firm triangular structure this moment, support the old man.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a help old person prevents falling car which characterized in that: comprises an upper end supporting component, an angle adjusting component, a bottom moving component and a seat component;

the upper end supporting assembly is used for supporting the old and avoiding the old from falling down to the front, left, right and back directions;

the bottom motion assembly is used for driving the anti-falling vehicle to move back and forth;

the angle adjusting assembly is arranged on the upper surface of the bottom moving assembly, the upper end of the angle adjusting assembly is fixedly connected with the lower surface of the upper end supporting assembly, and the angle adjusting assembly can rotate around the bottom moving assembly to drive the upper end supporting assembly to rotate;

the seat assembly is also mounted on the upper surface of the bottom motion assembly, and the seat assembly can be opened and closed according to the change of the gravity center of the old.

2. The senior fall-resistant vehicle according to claim 1, wherein: the upper end supporting assembly comprises an upper portion panel (30), a supporting arm (31) and a backrest (35), the number of the supporting arm (31) is two, the supporting arm is installed at two ends of the upper portion panel (30), the backrest (35) used for supporting the back of the old man is arranged at one end, far away from the upper portion panel (30), of the supporting arm (31), a backrest controller (38) is arranged in the supporting arm (31), and the backrest controller (38) is used for controlling rotation and locking of the backrest (35).

3. The senior fall-resistant vehicle according to claim 1, wherein: the bottom motion subassembly includes driving motor (4), bottom panel (1), panel beating backup pad (3), drive wheel (5) and universal wheel (2), the quantity of panel beating backup pad (3) has two, panel beating backup pad (3) both ends bending type cavity (10) downwards, install in the both ends of bottom panel (1) panel beating backup pad (3), universal wheel (2) are installed at bottom panel (1) both ends, the one end roll connection that bottom panel (1) was kept away from in panel beating backup pad (3) has drive wheel (5), install driving motor (4) in cavity (10) of panel beating backup pad (3), driving motor (4) are used for driving drive wheel (5) and rotate.

4. The senior fall-resistant vehicle according to claim 1, wherein: the angle adjusting assembly comprises an electric push rod (24), a support round pipe (23), a support square pipe (28), the lower ends of the support square pipe (28) and the support round pipe (23) are all connected with the middle part of the upper surface of the bottom panel (1) in a rotating mode, the upper ends of the support square pipe (28) and the support round pipe (23) are all connected with an upper portion panel (30) in a fixed mode, the quantity of the support round pipe (23) is two, the two ends of the support square pipe (28) are arranged, the electric push rod (24) is obliquely arranged on the upper surface of the metal plate support plate (3), the electric push rod (24) corresponds to the support round pipe (23) one to one, and the telescopic end of the electric push rod (24) is connected.

5. The senior fall-resistant vehicle according to claim 1, wherein: the seat component comprises a steering engine (11), a rocker (14), a rocker slider connecting rod (19), sliders (16), bearing seats (22) and profile frames (18), wherein two profile frames (18) are mounted on the upper surface of each sheet metal supporting plate (3), the steering engine (11) is arranged between the profile frames (18), grooves are formed in the front side, the rear side, the left side and the right side of each profile frame (18), the bearing seats (22) are mounted at the bottom ends of the grooves in the front side of each profile frame (18), the sliders (16) are connected to the middle upper parts in the grooves in the left side and the right side of each profile frame (18) in a sliding mode, one end of each rocker (14) is connected with the corresponding bearing seat (22) in a rolling mode, the other end of each rocker (14) is connected with the corresponding rocker slider connecting rod (19) in a rotating mode, one end, far away from each rocker, the seat which drives the upper surface of the rocker-slider connecting rod (19) to be installed is parallel to the horizontal plane after rotating.

6. The geriatric fall-resistant vehicle according to claim 1 or claim 2, wherein: the backrest controller (38) comprises a handle (39), a spring (41), a stop block (43), a cam (45), a moving rod (42), an incomplete gear block (44), a gear (45) and a convex block (47), wherein the convex block (47) and the incomplete gear block (44) are fixedly connected to two ends of the moving rod (42) respectively, the stop block (43) penetrates through the middle of the moving rod (42), the spring (41) is sleeved on the moving rod (42), one end of the spring (41) is fixedly connected with a convex part on the moving rod (42), the other end of the spring (41) is fixedly connected with the stop block (43), the gear (45) is installed in one end, far away from the upper panel (30), in the supporting arm (31), the gear (45) is used for driving the backrest (35) to rotate, the handle (39) is used for controlling the cam (45) to rotatably extrude the convex block (47) to drive the moving rod (42) to move, the incomplete gear block (44) is separated from the gear (45), after the cam (45) does not press the convex block (47), the spring (41) resets to drive the moving rod (42) to move towards one end close to the gear (45), and the incomplete gear block (44) is meshed with the gear (45).

7. The senior fall-resistant vehicle as recited in claim 5, wherein: the seat is made of canvas (20).

8. The senior fall-resistant vehicle according to claim 3, wherein: the output fixedly connected with motion transmission axle I (6) of driving motor (4), the one end interference fit that rotary driving motor (4) were kept away from in motion transmission axle I (6) has bevel gear I (7), it is equipped with motion transmission axle II (8) to insert in the middle of drive wheel (5), interference fit has bevel gear II (9) behind the one end that bevel gear II (9) were kept away from in motion transmission axle II (8) runs through panel beating backup pad (3), and bevel gear I (7) are connected with bevel gear II (9) meshing.

9. The senior fall-resistant vehicle according to claim 2, wherein: an elbow supporting block (36) and a curved supporting plate (37) are mounted on the upper surface of the supporting arm (31).