CN112891082A

CN112891082A - Electric wheelchair with step climbing function

Info

Publication number: CN112891082A
Application number: CN202110244900.0A
Authority: CN
Inventors: 陈中哲; 林宇超; 宋嘉豪
Original assignee: Jinhua Polytechnic
Current assignee: Jinhua Polytechnic
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-06-04

Abstract

The invention provides an electric wheelchair with a step climbing function, which comprises a chair body and a front supporting mechanism; the utility model discloses a chair, including the transition axle, the transition axle is connected with the front end of chair body, the back wheel of chair body alternates there is a drive shaft between the rear wheel, the drive shaft still is connected through chain drive with the transition axle, and preceding supporting mechanism is including last horizontal pole, electronic support push rod, sheer pole, the both ends of going up the horizontal pole respectively with the inboard fixed connection in the frame bottom of chair body, and the vertical interlude of the centre of going up the horizontal pole has the section of thick bamboo of inserting vertically, electronic support push rod alternates in the section of thick bamboo of inserting vertically, and the pars contractilis of electronic support push rod lower extreme rotates with the centre of sheer pole and links to each other. The front climbing step wheel set is put down and is in contact with the ground by controlling the electric supporting push rod, the front side end of the electric wheelchair is supported, and the electric supporting push rod is adjusted to enable the climbing belt to be consistent with the integral inclination of the outer baffle plate frame and the steps, so that the chair body is more stable when going up and down the steps, and the overturning phenomenon cannot occur.

Description

Electric wheelchair with step climbing function

Technical Field

The invention belongs to the technical field of electric wheelchairs, and particularly relates to an electric wheelchair with a step climbing function.

Background

The wheelchair is an important rehabilitation tool, is not only a walking tool for physically disabled people and mobility-handicapped people, but also is more important for the physically disabled people and the mobility-handicapped people to exercise and participate in social activities by virtue of the wheelchair, and the electric wheelchair is formed by superposing a high-performance power driving device, an intelligent operating device, a battery and other components on the basis of a traditional manual wheelchair and is transformed and upgraded.

If the application number is: CN202010427671.1 discloses an electric folding wheelchair capable of going up and down steps, in which a wheelchair seat assembly is installed on the upper part of a wheelchair underframe assembly through a wheelchair seat lifting assembly; the wheelchair wheel assembly and the wheelchair upper and lower step assembly are arranged on the wheelchair underframe assembly; the wheelchair seat assembly consists of foldable armrests, a foldable backrest and a translatable wheelchair seat plate which are connected with one another; the wheelchair seat lifting assembly is a scissor mechanical structure, the upper end of the scissor mechanical structure is matched with the bottom of the wheelchair seat assembly, and the lower end of the scissor mechanical structure is matched with the wheelchair underframe assembly; the wheelchair wheel assembly consists of a front wheel driving motor, a rear wheel driving motor, a wheelchair front wheel and a wheelchair rear wheel which are driven by the front wheel driving motor and the rear wheel driving motor; the wheelchair upper and lower step assembly consists of a front auxiliary wheel, a rear auxiliary wheel, a large motor and a power transmission mechanism thereof. The folding chair can be folded, saves space, can freely translate and lift the seat, has the functions of going up and down steps, and is safe and reliable.

Based on the above, when a traditional wheelchair goes up and down steps, the moving wheels on the front end side leave the ground, a supporting structure is lacked, overturning is easy to happen, and in the process of climbing the steps, the front side of the traditional wheelchair is also lacked of a protective structure, so that once the wheelchair overturns, a patient is easy to throw away from the wheelchair, and injury is caused.

Disclosure of Invention

In order to solve the technical problems, the invention provides an electric wheelchair with a step climbing function, which aims to solve the problems that when a wheelchair goes up and down steps, moving wheels on the front end side leave the ground, a supporting structure is lacked, and the wheelchair is easy to overturn, and when the wheelchair climbs the steps, a protective structure is lacked on the front side, and once the wheelchair overturns, a patient is easy to throw out of the wheelchair, so that the wheelchair is easy to hurt.

The invention provides an electric wheelchair with a step climbing function, which has the purposes and effects that the invention is achieved by the following specific technical means:

an electric wheelchair with a step climbing function comprises a chair body and a front supporting mechanism; a driving shaft is inserted between the rear wheels of the chair body, a gearbox is installed on the driving shaft, the outer side of the gearbox is connected with the frame of the chair body through a ribbed plate, a driving motor is also installed on the gearbox, the driving shaft is also connected with a transition shaft on the step climbing mechanism through a chain in a transmission way, the front supporting mechanism is installed at the front end of the inner side of the bottom of the chair body, the front supporting mechanism comprises an upper cross rod, an electric supporting push rod and a lower cross rod, the two ends of the upper cross rod are respectively and fixedly connected with the inner side of the bottom of the frame of the chair body, a vertical inserting barrel is vertically inserted in the middle of the upper cross rod, the electric supporting push rod is inserted in the vertical inserting barrel, two groups of clamping plates are also connected on the electric supporting push rod, the clamping plates are respectively arranged at the two ends of the vertical inserting barrel, the top end of the electric supporting push rod is connected with the frame of the chair body, the frame at the front end of the cushion of the chair body is also connected with a front protection structure.

Further, preceding supporting mechanism still climbs step wheelset and side shield before including, preceding step wheelset of climbing is installed respectively in the both ends side of sheer pole, and just preceding step wheelset of climbing comprises three crawl wheels of group, and three crawl wheels of group are cyclic annular arrangement and rotate around the one end of sheer pole and install between two sets of side shields for the axle.

Furthermore, when the telescopic part of the electric support push rod returns, the bottom end of the front climbing step wheel set is higher than the bottom end of the chair body walking wheel.

Further, preceding protective structure is including fixed connecting rod A, fixed backplate, fixed connecting rod B, rotatory backplate, rotary drum, fixed connecting rod A connects between the handrail frame of chair body one end and shank strut, and fixed connecting rod A's upper end one side fixedly connected with fixed backplate, and fixed connecting rod B connects between the handrail frame of the chair body other end and shank strut, and rotary backplate fixed connection is in the outside of rotary drum, and the rotary drum rotates and inlays the upper end at fixed connecting rod B.

Further, the front end of fixed backplate is concave structure and is equipped with vertical jack, and the front end of rotatory backplate is protruding type structure and is equipped with vertical perforation, and the protruding type structure card of rotatory backplate is gone into in the concave structure of fixed backplate, and vertical jack and vertical perforation are relative from top to bottom, and just it is fixed through T type inserted bar cartridge between rotatory backplate and the fixed backplate.

Further, climb step mechanism including climb area, outer baffle frame, lower linkage shaft, go up the card axle, link plate, U type link, bracing tube, electric control push rod, transition axle down, climb the area and rotate and install on outer baffle frame, climb and be equipped with the climbing cardboard on the outer terminal surface in area even equidistance, and climb the both ends in area and pass through the drive roller transmission, the drive roller is installed at the both ends of outer baffle frame inboardly, fixed interlude has lower linkage shaft on the drive roller of downside, the both ends of lower linkage shaft are rotated respectively and are alternated under on the link plate, link plate and the frame of chair body rear end are fixed continuous down, link shaft still is connected through chain drive between lower and the transition axle, fixed interlude has gone up the card axle on the drive roller of upside, the both ends of going up the card axle are rotated and are inserted U type link frame.

Furthermore, the middle of the outer end of the U-shaped connecting frame is fixedly connected with a telescopic part of an electric adjusting push rod, the electric adjusting push rod is installed at the upper end of the inclined supporting pipe, and the inclined supporting pipe is inclined backwards by 15 degrees and is connected with a rear end frame of the chair body.

Furthermore, when the telescopic part of the electric adjusting push rod returns, the climbing belt and the outer baffle plate frame are also inclined backwards by 15 degrees and are parallel to the inclined supporting pipe.

The invention at least comprises the following beneficial effects:

1. according to the invention, the front supporting mechanism is arranged, when the electric wheelchair climbs steps, the front climbing step wheel set is put down and contacted with the ground by controlling the electric supporting push rod, the front side end of the electric wheelchair is supported, so that a climbing belt in the climbing step mechanism is contacted with the steps, the climbing belt is driven by the electric adjusting push rod in the climbing step mechanism to be adjusted with the upper end of the outer baffle plate frame, the climbing belt and the outer baffle plate frame are integrally consistent with the inclination of the steps, the driving shaft is in transmission connection with the lower linkage shaft in the climbing step mechanism by using a chain, when the driving motor in the chair body drives the driving shaft to rotate, the climbing belt can be synchronously driven to act, and the climbing clamping plate on the climbing belt and the diamond-corner clamping position at the outer end of the steps are used for enabling the electric wheelchair to integrally move up and down on the steps, so that the chair body is more stable when going up and down the steps, and the phenomenon of overturning.

2. According to the wheelchair, the front protection structure is arranged, when a patient needs to sit on the wheelchair, the T-shaped insertion rod is pulled out, the rotating protection plate is rotated open, after the patient sits on the wheelchair body, the convex structure at the front end of the rotating protection plate is rotated back into the concave structure at the front end of the fixed protection plate and is inserted and fixed through the T-shaped insertion rod, the patient is protected by the rotating protection plate and the fixed protection plate, and the patient is prevented from sliding out of the wheelchair body to be injured when the wheelchair body moves normally and moves up and down steps.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an enlarged schematic view of the invention at a in fig. 1.

Fig. 3 is an enlarged schematic view of the invention at B in fig. 1.

Fig. 4 is a schematic side view of the invention shown in fig. 1.

Fig. 5 is an enlarged view of the structure of fig. 4 at C according to the present invention.

Fig. 6 is a schematic view of the structure of fig. 1 from another view angle according to the present invention.

Fig. 7 is an enlarged view of the structure of fig. 6 according to the present invention.

Fig. 8 is a schematic structural view of the stair climbing mechanism in the invention.

Fig. 9 is a schematic structural view of the outer barrier frame of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a chair body; 101. a drive shaft; 2. a front support mechanism; 201. an upper cross bar; 2011. a vertical insertion cylinder; 202. an electric support push rod; 2021. a clamping plate; 203. a lower cross bar; 204. a front climbing step wheel group; 205. a side dam; 3. a front protective structure; 301. a fixed connecting rod A; 302. fixing the guard plate; 303. a fixed connecting rod B; 304. rotating the guard plate; 3041. a rotating drum; 305. a T-shaped inserted link; 4. a step climbing mechanism; 401. climbing a belt; 4011. climbing a clamping plate; 402. an outer baffle frame; 403. a lower link shaft; 404. an upper clamping shaft; 405. a lower connecting plate; 406. a U-shaped connecting frame; 407. a diagonal bracing tube; 4071. electrically adjusting the push rod; 408. a transition shaft.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Example (b):

as shown in figures 1 to 9:

the invention provides an electric wheelchair with a step climbing function, which comprises a chair body 1 and a front supporting mechanism 2; a driving shaft 101 is inserted between the rear wheels of the chair body 1, a gearbox is installed on the driving shaft 101, the outer side of the gearbox is connected with the frame of the chair body 1 through a ribbed plate, a driving motor is also installed on the gearbox, the driving shaft 101 is also connected with a transition shaft 408 on the step climbing mechanism 4 through a chain, a front support mechanism 2 is installed at the front end of the inner side of the bottom of the chair body 1, the front support mechanism 2 comprises an upper cross rod 201, an electric support push rod 202 and a lower cross rod 203, the two ends of the upper cross rod 201 are respectively fixedly connected with the inner side of the bottom of the frame of the chair body 1, a vertical insertion barrel 2011 is vertically inserted in the middle of the upper cross rod 201, the electric support push rod 202 is inserted in the vertical insertion barrel 2011, the electric support push rod 202 is also connected with two sets of clamping plates 2021, the clamping plates 2021 are respectively arranged at the two ends of the vertical insertion barrel, the top end of the electric support push, the telescopic part at the lower end of the electric support push rod 202 is rotatably connected with the middle of the lower cross rod 203, and the frame at the front end of the cushion of the chair body 1 is also connected with a front protective structure 3.

Wherein the front supporting mechanism 2 further comprises a front climbing step wheel set 204 and a side baffle 205, the front climbing step wheel set 204 is respectively arranged at the two end sides of the lower cross rod 203, and the front climbing step wheel group 204 is composed of three groups of climbing wheels, and the three groups of climbing wheels are annularly arranged around one end of the lower cross rod 203 as a shaft and rotatably installed between the two groups of side baffles 205, when the telescopic part of the electric support push rod 202 returns, the bottom end of the front climbing step wheel group 204 is higher than the bottom end of the walking wheel of the chair body 1, when the electric wheelchair climbs steps, the two groups of front climbing step wheel sets 204 are put down and contacted with the ground by controlling the electric supporting push rod 202, the front side end of the electric wheelchair is supported by utilizing the rotating connection relation of the telescopic part of the electric supporting push rod 202 and the lower cross rod 203, so that the chair body 1 is more stable when going up and down steps without overturning, meanwhile, when the chair body 1 climbs the steps, the three groups of climbing wheels in the front climbing step wheel group 204 can smoothly follow the climbing steps.

Wherein, the front protective structure 3 comprises a fixed connecting rod A301, a fixed guard plate 302, a fixed connecting rod B303, a rotary guard plate 304 and a rotary drum 3041, the fixed connecting rod A301 is connected between the armrest frame and the leg support frame at one end of the chair body 1, one side of the upper end of the fixed connecting rod A301 is fixedly connected with the fixed guard plate 302, the fixed connecting rod B303 is connected between the armrest frame and the leg support frame at the other end of the chair body 1, the rotary guard plate 304 is fixedly connected to the outer side of the rotary drum 3041, the rotary drum 3041 is rotatably embedded at the upper end of the fixed connecting rod B303, the front end of the fixed guard plate 302 is a concave structure and is provided with a vertical insertion hole, the front end of the rotary guard plate 304 is a convex structure and is provided with a vertical through hole, the convex structure of the rotary guard plate 304 is inserted into the concave structure of the fixed guard plate 302, the vertical insertion hole is opposite, when a patient needs to sit on the wheelchair 1, the T-shaped insertion rod 305 is pulled out, the rotating protection plate 304 is rotated, after the patient sits on the wheelchair body 1, the convex structure at the front end of the rotating protection plate 304 is rotated back into the concave structure at the front end of the fixed protection plate 302, the T-shaped insertion rod 305 is inserted and fixed, and the rotating protection plate 304 and the fixed protection plate 302 are used for protecting the patient.

Wherein, the climbing step mechanism 4 comprises a climbing belt 401, an outer baffle plate frame 402, a lower linkage shaft 403, an upper clamping shaft 404, a lower connecting plate 405, a U-shaped connecting frame 406, an inclined supporting pipe 407, an electric adjusting push rod 4071 and a transition shaft 408, the climbing belt 401 is rotatably installed on the outer baffle plate frame 402, climbing clamping plates 4011 are uniformly arranged on the outer end face of the climbing belt 401 at equal intervals, two ends of the climbing belt 401 are driven by driving rollers which are installed on the inner sides of two ends of the outer baffle plate frame 402, the lower linkage shaft 403 is fixedly inserted on the driving roller at the lower side, two ends of the lower linkage shaft 403 are respectively rotatably inserted on the lower connecting plate 405, the lower connecting plate 405 is fixedly connected with a frame at the rear end of the chair body 1, the lower linkage shaft 403 is also in transmission connection with the transition shaft 408 through a chain, the upper clamping shaft 404 is fixedly inserted on the driving roller at the upper side, two ends of the upper clamping shaft 404 are rotatably inserted on the U-shaped connecting frame 406, two groups of front climbing step wheel sets 204 are lowered and contacted, utilize the rotation relation of being connected of electronic support push rod 202 pars contractilis and sheer pole 203, prop up the front side end of electronic wheelchair, thereby make climb in the step mechanism 4 take 401, climb cardboard 4011 and step contact, when driving motor drives drive shaft 101 and rotates in the chair body 1, can drive in step and climb and take 401 action, utilize the rhombus screens of climbing cardboard 4011 and step outer end on climbing the area 401, make the whole up-and-down motion on the step of electronic wheelchair.

Wherein, the flexible portion fixed connection with electric control push rod 4071 in the middle of the outer end of U type link 406, electric control push rod 4071 installs in the upper end of raking arm 407, and raking arm 407 inclines 15 and links to each other with the rear end frame of chair body 1 backward, when electric control push rod 4071's flexible portion return, climb and take 401 and outer baffle frame 402 also incline 15 backward and be parallel with raking arm 407, accessible electric control push rod 4071 drives the upper end of climbing and taking 401 and outer baffle frame 402 and adjusts.

The specific use mode and function of the embodiment are as follows:

in the invention, when a patient needs to sit on the wheelchair 1, the T-shaped insertion rod 305 is pulled out, the rotating guard plate 304 is rotated open, after the patient sits on the wheelchair body 1, the convex structure at the front end of the rotating guard plate 304 is rotated back into the concave structure at the front end of the fixed guard plate 302 and is inserted and fixed through the T-shaped insertion rod 305, the patient is protected by the rotating guard plate 304 and the fixed guard plate 302, when the electric wheelchair climbs a step, the two groups of front climbing step wheel sets 204 are put down and contacted with the ground by controlling the electric support push rod 202, the front side end of the electric wheelchair is supported by the rotary connection relationship of the telescopic part of the electric support push rod 202 and the lower cross rod 203, so that the climbing belt 401 and the climbing clamp plate 4011 in the climbing step mechanism 4 are contacted with the step, and the electric adjustment push rod 4071 in the climbing step mechanism 4 can drive the climbing belt 401 and the upper end of the outer baffle plate frame 402 to be adjusted, make and climb and take 401 and the holistic slope of outer baffle frame 402 unanimous with the step, and utilize the chain to make drive shaft 101 be connected with lower linkage shaft 403 transmission, when driving motor drives drive shaft 101 and rotates in chair body 1, can drive in step and climb and take 401 action, utilize and climb the water caltrop screens of climbing cardboard 4011 on taking 401 and step outer end, make the whole up-and-down motion on the step of electronic wheelchair, and it is more stable when the step is gone up and down to make chair body 1 through the supporting role of preceding step wheelset 204 of climbing, the phenomenon that can not take place to topple, preceding protective structure 3 can also prevent that chair body 1 from normal motion and when the step motion is gone up and down, the patient follows the roll-off on chair body 1, cause patient's injury simultaneously.

The invention is not described in detail, but is well known to those skilled in the art.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides an electronic wheelchair car with climb step function which characterized in that: comprises a chair body (1) and a front supporting mechanism (2); a driving shaft (101) is inserted between the rear wheels of the chair body (1), a gearbox is installed on the driving shaft (101), the outer side of the gearbox is connected with the frame of the chair body (1) through a rib plate, a driving motor is further installed on the gearbox, the driving shaft (101) is further connected with a transition shaft (408) on the step climbing mechanism (4) through chain transmission, the front supporting mechanism (2) is installed at the front end of the inner side of the bottom of the chair body (1), the front supporting mechanism (2) comprises an upper cross rod (201), an electric supporting push rod (202) and a lower cross rod (203), two ends of the upper cross rod (201) are respectively fixedly connected with the inner side of the bottom of the frame of the chair body (1), a vertical inserting barrel (2011) is vertically inserted in the middle of the upper cross rod (201), the electric supporting push rod (202) is inserted in the vertical inserting barrel (2011), and two groups of clamping plates (2021) are further connected to the electric supporting push rod (202), and screens board (2021) are established respectively at the both ends of vertical inserting section of thick bamboo (2011), pass through bolted connection between the top of electronic support push rod (202) and the frame of the chair body (1), and the pars contractilis of electronic support push rod (202) lower extreme rotates with the centre of sheer pole (203) and links to each other, protective structure (3) before still being connected with on the frame of the cushion front end of the chair body (1).

2. The electric wheelchair having a step-climbing function as claimed in claim 1, wherein: preceding supporting mechanism (2) are still including preceding step wheelset (204) and side shield (205) of climbing, preceding step wheelset (204) of climbing is installed respectively in the both ends side of sheer pole (203), and preceding step wheelset (204) of climbing comprises three crawl wheels of group, and three crawl wheels of group are cyclic annular arrangement and rotate around the one end of sheer pole (203) and install between two sets of side shields (205).

3. The electric wheelchair having a step-climbing function as claimed in claim 1, wherein: when the telescopic part of the electric support push rod (202) returns, the bottom end of the front climbing step wheel group (204) is higher than the bottom end of the walking wheel of the chair body (1).

4. The electric wheelchair having a step-climbing function as claimed in claim 1, wherein: the front protection structure (3) comprises a fixed connecting rod A (301), a fixed guard plate (302), a fixed connecting rod B (303), a rotary guard plate (304) and a rotary drum (3041), wherein the fixed connecting rod A (301) is connected between a handrail frame and a leg support frame at one end of the chair body (1), the fixed guard plate (302) is fixedly connected to one side of the upper end of the fixed connecting rod A (301), the fixed connecting rod B (303) is connected between the handrail frame and the leg support frame at the other end of the chair body (1), the rotary guard plate (304) is fixedly connected to the outer side of the rotary drum (3041), and the rotary drum (3041) is rotatably embedded in the upper end of the fixed connecting rod B (303).

5. The electric wheelchair having a step-climbing function according to claim 4, wherein: the front end of fixed backplate (302) is concave structure and is equipped with vertical jack, and the front end of rotatory backplate (304) is protruding type structure and is equipped with vertical perforation, and the protruding type structure card of rotatory backplate (304) is gone into in the concave structure of fixed backplate (302), and vertical jack and vertical perforation are relative from top to bottom, and just it is fixed through T type inserted bar (305) cartridge between rotatory backplate (304) and fixed backplate (302).

6. The electric wheelchair having a step-climbing function as claimed in claim 1, wherein: the stair climbing mechanism (4) comprises a climbing belt (401), an outer baffle plate frame (402), a lower linkage shaft (403), an upper clamp shaft (404), a lower connecting plate (405), a U-shaped connecting frame (406), a diagonal bracing tube (407), an electric adjusting push rod (4071) and a transition shaft (408), wherein the climbing belt (401) is rotatably installed on the outer baffle plate frame (402), the outer end face of the climbing belt (401) is uniformly provided with climbing clamp plates (4011) at equal intervals, the two ends of the climbing belt (401) are driven by driving rollers, the driving rollers are installed at the inner sides of the two ends of the outer baffle plate frame (402), the lower linkage shaft (403) is fixedly inserted on the driving rollers at the lower side, the two ends of the lower linkage shaft (403) are respectively rotated and inserted on the lower connecting plate (405), the lower connecting plate (405) is fixedly connected with a frame at the rear end of a chair body (1), and the lower linkage shaft (403) is also connected with the transition shaft (408), an upper clamping shaft (404) is fixedly inserted on the driving roller on the upper side, and two ends of the upper clamping shaft (404) are rotatably inserted in the U-shaped connecting frame (406).

7. The electric wheelchair having a step-climbing function according to claim 6, wherein: the middle of the outer end of the U-shaped connecting frame (406) is fixedly connected with a telescopic part of an electric adjusting push rod (4071), the electric adjusting push rod (4071) is installed at the upper end of an inclined supporting pipe (407), and the inclined supporting pipe (407) is inclined backwards by 15 degrees and is connected with a rear end frame of the chair body (1).

8. The electric wheelchair having a step-climbing function according to claim 7, wherein: when the telescopic part of the electric adjusting push rod (4071) returns, the climbing belt (401) and the outer baffle plate frame (402) are also inclined backwards by 15 degrees and are parallel to the inclined supporting pipe (407).