Medical old-age nursing auxiliary intelligent wheelchair based on health big data sharing

Abstract

The invention belongs to the technical field of wheelchairs, and particularly relates to a medical old-age nursing auxiliary intelligent wheelchair based on health big data sharing, the medical old-age nursing auxiliary intelligent wheelchair comprises a base and a seat arranged above the base, and two groups of pneumatic tires are symmetrically arranged on two sides of the base; the contact area adjusting mechanism comprises two air storage cavities formed in the base, hollow rotating cylinders are rotationally connected to the two side walls of the base, the interior of each pneumatic tire communicates with the air storage cavity in the corresponding position through the corresponding hollow rotating cylinder, and a piston block is slidably connected to the interior of each air storage cavity in a sealed mode; the end, away from the hollow rotary drum, of each piston block is fixedly connected with an extension rod, and the upper end of the base is fixedly connected with two supporting rods. By arranging the contact area adjusting mechanism, the air pressure in the pneumatic tire can be adjusted through the vibration amplitude, so that the contact area of the pneumatic tire and the ground is adjusted according to the fluctuation condition of the road surface, and the tire is prevented from sinking into the road surface and the wheelchair moving efficiency is prevented from being reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of wheelchairs, and in particular relates to a medical and elderly care auxiliary intelligent wheelchair based on health big data sharing. Background Art

[0002] An assisted smart wheelchair is a wheelchair that combines modern technology and design to improve the user's mobility and quality of life. It is usually equipped with a series of intelligent functions, such as automatic navigation, obstacle detection, voice control and remote monitoring, which can help users move more independently. With the development of science and technology, today's assisted smart wheelchairs have been widely used in the fields of medical care and elderly care, which can not only improve the quality of life of individuals, but also promote social inclusion and support for the elderly and people with disabilities.

[0003] However, the existing medical and elderly care auxiliary intelligent wheelchairs still have the following technical problems when in use:

[0004] The contact area between the tire and the road cannot be adjusted according to different usage scenarios. When used on uneven surfaces such as grass, gravel or mud, if the contact area between the tire and the road is small, the tire will sink into the road. When used on smooth hard roads such as tiles and concrete, if the contact area between the tire and the road is large, the mobility of the wheelchair will be reduced. Therefore, there is an urgent need for a medical and elderly care auxiliary intelligent wheelchair that can adjust the tire according to the road conditions. Summary of the invention

[0005] The purpose of the present invention is to address the problems raised in the above-mentioned background technology and to provide a medical and elderly care assisted intelligent wheelchair based on health big data sharing, which can adjust the air pressure in the pneumatic tire by the vibration amplitude, thereby adjusting the contact area between the pneumatic tire and the ground according to the undulations of the road surface, avoiding the tire from sinking into the road surface and reducing the movement efficiency of the wheelchair.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A medical and elderly care auxiliary intelligent wheelchair based on health big data sharing, including:

[0008] A base and a seat arranged on the base, and two sets of pneumatic tires are symmetrically arranged on both sides of the base;

[0009] The contact area adjustment mechanism includes two air storage chambers opened inside the base, and hollow rotating cylinders are rotatably connected to the two side walls of the base. The interior of each pneumatic tire is connected to the air storage chamber at the corresponding position through the hollow rotating cylinder. A piston block is sealed and slidably connected inside each air storage chamber, and an extension rod is fixedly connected to the end of each piston block away from the hollow rotating cylinder. Two support rods are fixedly connected to the upper end of the base, and a bidirectional screw is rotatably connected between the two support rods. Threads with opposite spiral directions are arranged on the rod bodies on both sides of the bidirectional screw, and two extension rods are respectively threadedly connected to the threads on both sides of the bidirectional screw. A control box is fixedly connected between the base and the seat, and a lifting component controlled by the vibration amplitude is arranged inside the control box.

[0010] Preferably, the seat is provided with a sensor for real-time monitoring of the user's health data, and the upper end of the base is provided with a control panel for remote monitoring and care.

[0011] Preferably, the lifting assembly includes a first spring fixedly connected to the bottom wall of the control box body, the upper end of the first spring is fixedly connected to a counterweight block, the upper end of the counterweight block is fixedly connected to a telescopic rod, the upper end of the telescopic rod is fixedly connected to a ratchet block, the ratchet block is slidably connected to the inner side wall of the control box body, the inner wall of the control box body is slidably connected to a ratchet plate that cooperates with both sides of the ratchet block, a second spring is provided between the two ratchet plates and the inner side wall of the control box body, a rack is fixedly connected to the side wall of the ratchet block, a transmission rod is rotatably connected to the side wall of the control box body, the part of the transmission rod extending into the control box body is fixedly connected to a first gear that meshes with the rack, the part of the transmission rod extending outside the control box body is fixedly connected to a bevel gear, and the bidirectional screw is fixedly connected to a bevel gear ring that meshes with the bevel gear.

[0012] Preferably, a limiting groove is provided at the upper end of the base, and the extension rod is slidably connected to the inner wall of the limiting groove.

[0013] Preferably, a speed adjustment mechanism controlled by the lifting assembly is provided on one side outer wall of the control box body, including a resistance rod fixedly connected to the outer wall of the control box body, a sliding plate is slidably connected to the resistance rod, the sliding plate is fixedly connected to the ratchet block, and a servo motor for driving the pneumatic tire is provided inside the base, and the servo motor is connected in series with a power supply device arranged inside the base through the resistance rod and the sliding plate.

[0014] Preferably, a second gear is fixedly connected to the output end of the servo motor, and a gear ring meshing with the second gear is fixedly connected to the portion of the hollow drum extending outside the base.

[0015] Preferably, a reset mechanism is provided on the side of the control box away from the speed adjustment mechanism, including an electric push rod arranged at the lower end of the seat, the bottom end of the electric push rod is fixedly connected to a lifting block, both sides of the lifting block are rotatably connected to guide wheels, and two trapezoidal blocks are slidably provided on the outer wall of the control box, the two trapezoidal blocks are respectively in contact with the two guide wheels for rolling, and the two trapezoidal blocks are respectively fixedly connected to the ratchet plates at corresponding positions.

[0016] Preferably, an anti-dumping mechanism is also provided inside the base, including a circular control cavity and an annular storage cavity opened inside the base, a counterweight disc is slidably connected in the circular control cavity, a plurality of third springs are provided between the counterweight disc and the inner wall of the circular control cavity, a plurality of connecting cavities are connected between the circular control cavity and the annular storage cavity, a push plate is slidably connected in each connecting cavity, an elastic rod is fixedly connected between each push plate and the counterweight disc, and a plurality of counterweight balls are filled between the annular storage cavity and the plurality of connecting cavities.

[0017] Compared with existing technologies, the advantages of this medical and elderly care auxiliary smart wheelchair based on health big data sharing are:

[0018] 1. The present invention monitors the user's health data, such as heart rate, blood pressure, body temperature, etc., in real time by setting sensors and control panels, and enables hospitals, doctors or family members to share the user's health data, realize remote monitoring and care, diagnose and treat potential diseases in a timely manner, and improve the user's quality of life.

[0019] 2. The present invention provides a contact area adjustment mechanism. When in use, the first spring and the counterweight block can detect the road conditions in real time. When the road surface is undulating, the vibration amplitude of the ratchet block is larger, and the highest point of its vibration is relatively increased, so that the ratchet block can move to a higher position along the ratchet plate, driving the bidirectional screw to rotate a larger number of circles, thereby increasing the space on the side of the air storage chamber close to the pneumatic tire and reducing the air pressure in the pneumatic tire. The more uneven the road surface is, the softer the pneumatic tire is, and the sidewall of the tire is expanded outward more, thereby increasing the contact area between the pneumatic tire and the road surface and enhancing the grip. As the unevenness of the road surface increases, the stability of the wheelchair is improved accordingly to prevent the tire from sinking into the ground. When the road surface is undulating less, the ratchet block is in a lower position on the ratchet plate, the space on the side of the air storage chamber close to the pneumatic tire is smaller, and the sidewall of the tire is in a relatively straight state, thereby reducing the contact area with the road surface. When the road surface is relatively flat, the movement efficiency of the wheelchair and the steering flexibility of the wheelchair are improved, making the control more agile.

[0020] 3. The present invention sets a speed adjustment mechanism. When the road surface is more uneven, the ratchet block moves upward along the ratchet plate, and the sliding piece and the resistance rod move upward. As a result, the resistance of the circuit where the servo motor is located is larger, the current is smaller, the power of the servo motor to drive the tire to rotate is lower, and the wheelchair moves slower. The driving speed can be adjusted according to the road surface conditions to improve safety and control.

[0021] 4. The present invention provides an anti-tipping mechanism. When the wheelchair tilts, the counterweight disc moves toward the tilted side in the circular control cavity, pushes the counterweight balls in the connecting cavity on the tilted side into the annular storage cavity, and makes the extra counterweight balls in the annular storage cavity enter the connecting cavity away from the tilted side. When the wheelchair tilts, the weight on the other side increases accordingly, thereby correcting the deviation of the wheelchair and preventing it from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0025] Figure 4 It is a schematic cross-sectional structural diagram of the base in the present invention;

[0026] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0027] Figure 6 It is a cross-sectional structural schematic diagram of the control box in the present invention;

[0028] Figure 7 yes Figure 6 The enlarged view of point D in the middle;

[0029] Figure 8 It is a partial structural schematic diagram of another angle of the control box in the present invention.

[0030] In the figure: 1, base; 11, seat; 12, pneumatic tire; 2, contact area adjustment mechanism; 21, air storage chamber; 22, hollow drum; 23, piston block; 24, extension rod; 25, support rod; 26, bidirectional screw; 27, control box; 28, lifting assembly; 281, first spring; 282, counterweight; 283, telescopic rod; 284, ratchet block; 285, ratchet plate; 286, second spring; 287, rack; 288, transmission rod; 289, first gear; 2810, cone Gear; 2811, bevel gear ring; 3, control panel; 4, limit groove; 5, speed adjustment mechanism; 51, resistance rod; 52, slide; 53, servo motor; 6, second gear; 61, gear ring; 7, reset mechanism; 71, electric push rod; 72, lifting block; 73, guide wheel; 74, trapezoidal block; 8, anti-dumping mechanism; 81, circular control chamber; 82, annular storage chamber; 83, counterweight disc; 84, third spring; 85, connecting chamber; 86, push plate; 87, elastic rod; 88, counterweight ball. DETAILED DESCRIPTION

[0031] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0032] Example: Refer to Figures 1 to 8 , a medical and elderly care auxiliary intelligent wheelchair based on health big data sharing, including:

[0033] A base 1 and a seat 11 arranged above the base 1, and two sets of pneumatic tires 12 are symmetrically arranged on both sides of the base 1;

[0034] Specifically, the seat 11 is provided with a sensor for real-time monitoring of the user's health data, and the upper end of the base 1 is provided with a control panel 3 for remote monitoring and care.

[0035] In actual use, the user's health data, such as heart rate, blood pressure, body temperature, etc., can be monitored in real time through sensors installed on the seat 11, and a control panel 3 with a cloud platform and a sharing link can be set up to store data through the cloud platform. Through the sharing link, it is convenient for hospitals, doctors or family members to share the user's health data, realize remote monitoring and care, diagnose and check potential diseases in time, and improve the user's quality of life.

[0036] The contact area adjustment mechanism 2 is used to adjust the contact area between the pneumatic tire 12 and the road surface according to the road surface conditions. The contact area adjustment mechanism 2 includes two air storage chambers 21 opened inside the base 1. Hollow rotating cylinders 22 are rotatably connected on both side walls of the base 1. The inside of each pneumatic tire 12 is connected to the air storage chamber 21 at the corresponding position through the hollow rotating cylinder 22. A piston block 23 is sealed and slidably connected inside each air storage chamber 21. An extension rod 24 is fixedly connected to one end of each piston block 23 away from the hollow rotating cylinder 22. Two support rods 25 are fixedly connected to the upper end of the base 1. A bidirectional screw 26 is rotatably connected between the two support rods 25. Threads with opposite spiral directions are arranged on the rods on both sides of the bidirectional screw 26. The two extension rods 24 are respectively threadedly connected to the threads on both sides of the bidirectional screw 26. A control box 27 is fixedly connected between the base 1 and the seat 11. A lifting component 28 controlled by the vibration amplitude is arranged inside the control box 27 for controlling the number of rotations of the bidirectional screw 26.

[0037] Specifically, a limiting groove 4 is provided at the upper end of the base 1, and the extension rod 24 is slidably connected to the inner wall of the limiting groove 4. Through the setting of the limiting groove 4, when the bidirectional screw 26 rotates, the extension rod 24 can only move closer to or away from each other along the bidirectional screw 26, thereby limiting the extension rod 24.

[0038] The lifting assembly 28 includes a first spring 281 fixedly connected to the inner bottom wall of the control box 27, a counterweight block 282 fixedly connected to the upper end of the first spring 281, a telescopic rod 283 fixedly connected to the upper end of the counterweight block 282, a ratchet block 284 fixedly connected to the upper end of the telescopic rod 283, the ratchet block 284 slidably connected to the inner side wall of the control box 27 in the vertical direction, and a ratchet plate 285 matching with both sides of the ratchet block 284 slidably connected to the inner wall of the control box 27 in the horizontal direction, and the two ratchet plates 285 and the control box 27 are connected to each other. A second spring 286 is provided between the inner side walls of the box body 27, a rack 287 is fixedly connected to the side wall of the ratchet block 284, a transmission rod 288 is rotatably connected to the side wall of the control box body 27, the part of the transmission rod 288 extending into the control box body 27 is fixedly connected to the first gear 289 which meshes with the rack 287, the part of the transmission rod 288 extending outside the control box body 27 is fixedly connected to the bevel gear 2810, and the bidirectional screw 26 is fixedly connected to a bevel gear ring 2811 which meshes with the bevel gear 2810.

[0039] Specifically, the elastic force of the second spring 286 causes the ratchet plate 285 to always abut against both sides of the ratchet block 284, so that the ratchet block 284 can only move upward along the ratchet plate 285, thereby detecting the highest point of the movement of the ratchet block 284 and determining the undulation of the road surface based on the highest point.

[0040] In view of the problem that the contact area between the tire and the road surface cannot be adjusted according to different usage scenarios in the prior art, the present invention provides a contact area adjustment mechanism 2. When in use, the road surface condition can be detected in real time through the first spring 281 and the counterweight block 282. The specific detection method is as follows:

[0041] When the road surface is undulating, the vibration amplitude of the ratchet block 284 is relatively large, and the highest point of its vibration is relatively high, so that the ratchet block 284 can move to a higher position along the ratchet plate 285, and further drive the transmission rod 288 to rotate through the rack 287 and the first gear 289, and drive the bidirectional screw 26 to rotate a larger number of circles through the bevel gear 2810 and the bevel gear ring 2811, so that the two extension rods 24 are closer to each other, so that the space on the side of the air storage chamber 21 close to the pneumatic tire 12 is increased, and the air pressure in the pneumatic tire 12 is reduced, so that the more uneven the road surface is, the softer the pneumatic tire 12 is, and the sidewall of the tire is expanded outward, which increases the contact area between the pneumatic tire 12 and the road surface, and enhances the grip, thereby improving the stability of the wheelchair accordingly with the unevenness of the road surface, and preventing the tire from sinking into the ground;

[0042] When the road surface is less undulating, the ratchet block 284 is in a lower position on the ratchet plate 285, so that the bidirectional screw 26 rotates fewer times, the space on the side of the air storage chamber 21 close to the pneumatic tire 12 is smaller, the air pressure in the pneumatic tire 12 is higher, and the sidewall of the tire is in a relatively straight state, reducing the contact area with the road surface. When the road surface is relatively flat, the movement efficiency of the wheelchair and the steering flexibility of the wheelchair are improved, making the control more agile.

[0043] In addition, a reset mechanism 7 is provided on the side of the control box 27 away from the speed adjustment mechanism 5, which is used to drive the ratchet block 284 to move to the bottom and readjust the pneumatic tire 12 according to the road conditions. The reset mechanism 7 includes an electric push rod 71 arranged at the lower end of the seat, and the bottom end of the electric push rod 71 is fixedly connected to a lifting block 72, and both sides of the lifting block 72 are rotatably connected to guide wheels 73. Two trapezoidal blocks 74 are slidingly provided on the outer wall of the control box 27 in the vertical direction. The two trapezoidal blocks 74 are respectively in contact with the two guide wheels 73 and roll, and the two trapezoidal blocks 74 are respectively fixedly connected to the ratchet plates 285 at corresponding positions.

[0044] Before the wheelchair is used each time, the lifting block 72 is pushed downward by the electric push rod 71, so that the two guide wheels 73 push the two trapezoidal blocks 74 away from each other, and further the two ratchet plates 285 are moved away from each other and no longer engage the ratchet block 284, so that the ratchet block 284 can be in the lowest position at the initial stage of the wheelchair use, ensuring the detection of the road surface each time the wheelchair is used.

[0045] A speed adjustment mechanism 5 controlled by the lifting assembly 28 is provided on the outer wall of one side of the control box 27, which is used to adjust the travel speed of the wheelchair according to the road conditions. The speed adjustment mechanism 5 includes a resistance rod 51 fixedly connected to the outer wall of the control box 27, and a slide 52 is slidably connected to the resistance rod 51. The slide 52 is fixedly connected to the ratchet block 284. A servo motor 53 for driving the pneumatic tire 12 is provided inside the base 1. The servo motor 53 is connected in series with a power supply device arranged inside the base 1 through the resistance rod 51 and the slide 52.

[0046] Specifically, a second gear 6 is fixedly connected to the output end of the servo motor 53, and a portion of the hollow drum 22 extending outside the base 1 is fixedly connected to a gear ring 61 that meshes with the second gear 6. In actual use, the second gear 6 can be driven to rotate by the servo motor 53, and the hollow drum 22 and the pneumatic tire 12 can be further driven to rotate by the gear ring 61, thereby realizing the movement of the wheelchair.

[0047] In order to avoid the situation where the wheelchair moves too fast and thus has a reduced stability and safety when the road surface is uneven, the present invention provides a speed adjustment mechanism 5. When the road surface is more uneven, the ratchet block 284 moves upward along the ratchet plate 285, and the slider 52 moves upward along the resistance rod 51. This increases the resistance of the circuit where the servo motor 53 is located, reduces the current, and reduces the power of the servo motor 53 to drive the pneumatic tire 12 to rotate. The wheelchair moves slower and can adjust the driving speed according to the road surface conditions. When the road surface is more undulating, the wheelchair moves slower, thereby improving the safety and control of the wheelchair.

[0048] An anti-dumping mechanism 8 is also provided inside the base 1, which is used to increase the weight of the other side to prevent the wheelchair from tipping over when the wheelchair tilts to one side. The anti-dumping mechanism 8 includes a circular control cavity 81 and an annular storage cavity 82 opened inside the base 1. A counterweight disc 83 is slidably connected in the circular control cavity 81. A plurality of third springs 84 distributed in a circular array are provided between the counterweight disc 83 and the inner wall of the circular control cavity 81. A plurality of connecting cavities 85 distributed in a circular array are connected between the circular control cavity 81 and the annular storage cavity 82. A push plate 86 is slidably connected in each connecting cavity 85. An elastic rod 87 is fixedly connected between each push plate 86 and the counterweight disc 83. A plurality of counterweight balls 88 are filled between the annular storage cavity 82 and the plurality of connecting cavities 85.

[0049] In order to prevent the wheelchair from tipping over and causing injuries to the user, the present invention provides an anti-tipping mechanism 8. When the wheelchair tilts, the counterweight disc 83 moves toward the tilted side in the circular control cavity 81, so that the elastic rod 87 pushes the push plate 86 in the connecting cavity 85 on the tilted side to slide, and the counterweight balls 88 in the connecting cavity 85 on the tilted side are pushed into the annular storage cavity 82, and the extra counterweight balls 88 in the annular storage cavity 82 enter the connecting cavity 85 away from the tilted side, so that when the wheelchair tilts, the weight on the other side increases accordingly, so that the wheelchair is corrected to prevent it from tipping over.

[0050] The present invention can be explained by the following operation mode:

[0051] When the invention is used, the second gear 6 is driven to rotate by the servo motor 53, and the hollow drum 22 and the pneumatic tire 12 are further driven to rotate by the gear ring 61, so that the wheelchair can be driven, and the user's health data is monitored in real time by the sensor, and the user's health data is shared with the hospital, doctor or family members through the sharing link set in the control panel 3;

[0052] When the road surface is undulating, the vibration amplitude of the ratchet block 284 is relatively large, and the highest point of its vibration is relatively high, so that the ratchet block 284 can move to a higher position along the ratchet plate 285, and further drive the two-way screw 26 to rotate more circles through the rack 287, the first gear 289, the transmission rod 288, the bevel gear 2810 and the bevel gear ring 2811, so that the two extension rods 24 are closer to each other, so that the space on the side of the air storage chamber 21 close to the pneumatic tire 12 is increased, and the air pressure in the pneumatic tire 12 is reduced, so that the more uneven the road surface is, the softer the pneumatic tire 12 is, and the sidewall of the tire is expanded outward, which increases the contact area between the pneumatic tire 12 and the road surface, and enhances the grip;

[0053] When the road surface is not very undulating, the ratchet block 284 is at a lower position on the ratchet plate 285, so that the number of turns of the bidirectional screw 26 is less, the space on the side of the air storage chamber 21 close to the pneumatic tire 12 is smaller, the air pressure in the pneumatic tire 12 is higher, and the sidewall of the tire is in a relatively straight state, which reduces the contact area with the road surface and improves the moving efficiency and steering flexibility of the wheelchair;

[0054] When the road surface is more uneven, the ratchet block 284 moves upward along the ratchet plate 285, and the sliding piece 52 and the resistance rod 51 move upward, so that the resistance of the circuit where the servo motor 53 is located is larger, the current is smaller, the power of the servo motor 53 to drive the pneumatic tire 12 to rotate is lower, and the moving speed of the wheelchair is slower;

[0055] When the wheelchair tilts, the counterweight disc 83 moves toward the tilted side in the circular control cavity 81, thereby pushing the push plate 86 in the connecting cavity 85 on the tilted side to slide through the elastic rod 87, pushing the counterweight balls 88 in the connecting cavity 85 on the tilted side into the annular storage cavity 82, and allowing the extra counterweight balls 88 in the annular storage cavity 82 to enter the connecting cavity 85 away from the tilted side, thereby correcting the deviation of the wheelchair.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical and elderly care auxiliary intelligent wheelchair based on health big data sharing, characterized in that: include: A base (1) and a seat (11) arranged above the base (1), wherein two sets of pneumatic tires (12) are symmetrically arranged on both sides of the base (1); The contact area adjustment mechanism (2) comprises two air storage chambers (21) opened inside a base (1), and hollow rotating cylinders (22) are rotatably connected to both side walls of the base (1), and the interior of each of the pneumatic tires (12) is connected to the air storage chamber (21) at a corresponding position through the hollow rotating cylinder (22), and the interior of each of the air storage chambers (21) is sealed and slidably connected to a piston block (23), and an end of each of the piston blocks (23) away from the hollow rotating cylinder (22) is fixedly connected to an extension rod (24), so that Two support rods (25) are fixedly connected to the upper end of the base (1), a bidirectional screw (26) is rotatably connected between the two support rods (25), threads with opposite spiral directions are arranged on both sides of the bidirectional screw (26), and the two extension rods (24) are respectively threadedly connected to the threads on both sides of the bidirectional screw (26), a control box (27) is fixedly connected between the base (1) and the seat (11), and a lifting component (28) controlled by vibration amplitude is arranged inside the control box (27).

2. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 1 is characterized in that: The seat (11) is provided with a sensor for real-time monitoring of user health data, and the upper end of the base (1) is provided with a control panel (3) for implementing remote monitoring and care.

3. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 1 is characterized in that: The lifting assembly (28) comprises a first spring (281) fixedly connected to the inner bottom wall of the control box (27); the upper end of the first spring (281) is fixedly connected to a counterweight block (282); the upper end of the counterweight block (282) is fixedly connected to a telescopic rod (283); the upper end of the telescopic rod (283) is fixedly connected to a ratchet block (284); the ratchet block (284) is slidably connected to the inner side wall of the control box (27); the inner wall of the control box (27) is slidably connected to a ratchet plate (285) matched with two sides of the ratchet block (284); the two ratchet plates (285) are connected to the control box (27); 7) A second spring (286) is provided between the inner and outer walls, a rack (287) is fixedly connected to the side wall of the ratchet block (284), a transmission rod (288) is rotatably connected to the side wall of the control box (27), the portion of the transmission rod (288) extending into the control box (27) is fixedly connected to a first gear (289) meshing with the rack (287), the portion of the transmission rod (288) extending outside the control box (27) is fixedly connected to a bevel gear (2810), and the bidirectional screw (26) is fixedly connected to a bevel gear ring (2811) meshing with the bevel gear (2810).

4. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 1 is characterized in that: A limiting groove (4) is provided at the upper end of the base (1), and the extension rod (24) is slidably connected to the inner wall of the limiting groove (4).

5. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 3 is characterized in that: A speed regulating mechanism (5) controlled by a lifting assembly (28) is provided on an outer wall of one side of the control box (27), comprising a resistance rod (51) fixedly connected to the outer wall of the control box (27), a slide plate (52) slidably connected to the resistance rod (51), and the slide plate (52) is fixedly connected to a ratchet block (284). A servo motor (53) for driving the pneumatic tire (12) is provided inside the base (1), and the servo motor (53) is connected in series with a power supply device provided inside the base (1) through the resistance rod (51) and the slide plate (52).

6. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 5 is characterized in that: The output end of the servo motor (53) is fixedly connected to a second gear (6), and the portion of the hollow drum (22) extending outside the base (1) is fixedly connected to a gear ring (61) meshing with the second gear (6).

7. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 3 is characterized in that: A reset mechanism (7) is provided on the side of the control box (27) away from the speed adjustment mechanism (5), comprising an electric push rod (71) arranged at the lower end of the seat (11), the bottom end of the electric push rod (71) is fixedly connected to a lifting block (72), both sides of the lifting block (72) are rotatably connected to guide wheels (73), two trapezoidal blocks (74) are slidably provided on the outer wall of the control box (27), the two trapezoidal blocks (74) are respectively in contact with the two guide wheels (73) and roll, and the two trapezoidal blocks (74) are respectively fixedly connected to the ratchet plates (285) at corresponding positions.

8. The medical and elderly care auxiliary intelligent wheelchair based on health big data sharing according to claim 1 is characterized in that: The base (1) is also provided with an anti-dumping mechanism (8) inside the base (1), comprising a circular control chamber (81) and an annular storage chamber (82) opened inside the base (1); a counterweight disc (83) is slidably connected inside the circular control chamber (81); a plurality of third springs (84) are provided between the counterweight disc (83) and the inner wall of the circular control chamber (81); a plurality of connecting chambers (85) are connected between the circular control chamber (81) and the annular storage chamber (82); a push plate (86) is slidably connected inside each of the connecting chambers (85); an elastic rod (87) is fixedly connected between each of the push plates (86) and the counterweight disc (83); and a plurality of counterweight balls (88) are filled between the annular storage chamber (82) and the plurality of connecting chambers (85).

Images