CN116001932A

CN116001932A - Stair climbing vehicle

Info

Publication number: CN116001932A
Application number: CN202211347288.0A
Authority: CN
Inventors: 王郅淙; 王栋; 秦玉环; 秦玉林
Original assignee: Weifang Bage Medical Devices Technology Co ltd
Current assignee: Weifang Bage Medical Devices Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-25

Abstract

The invention discloses a stair climbing vehicle which is used for assisting a user to climb up and down stairs. The chassis is provided with a stair climbing crawler belt driven by a first driving device and used for climbing stairs up and down. The pedal lifting device is used for providing a supporting foundation for a user and is arranged on the chassis through transmission of the second driving device so as to move along the chassis, so that the user can conveniently complete stair climbing actions. The control device is arranged on the pedal lifting device and used for controlling the first driving device to drive the stair climbing crawler to climb stairs and controlling the second driving device to drive the pedal lifting device to move at different positions of the chassis. The stair climbing vehicle provided by the invention can assist a user with a damaged knee to more conveniently climb up and down stairs, and the user can independently operate the stair climbing vehicle, so that the cost is lower.

Description

Stair climbing vehicle

Technical Field

The invention relates to the technical field of carrying, in particular to a stair climbing vehicle.

Background

Most of the buildings in the prior art in China are not provided with elevators, and basically take stairs as main upstairs and downstairs passages, so that people who cannot climb stairs can walk on flat ground due to damage of knees, but cannot climb stairs, so that great inconvenience is caused.

In the prior art, the stair climbing wheelchair has complex operation, complicated flow and high manufacturing cost, and needs other people to assist in operation, so that inconvenient travel of users is caused; the linear elevator needs to be connected with a wall surface or a stair railing, is complex to install, needs to be independently installed on each floor, is extremely high in manufacturing cost, occupies a certain space in a corridor, and can cause corridor traffic barriers.

Therefore, how to make users with damaged knees go up and down stairs conveniently is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

Accordingly, it is an object of the present invention to provide a stair climbing vehicle for assisting a user with a knee injury to conveniently climb up and down stairs.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a stair climbing vehicle for assisting a user in ascending and descending stairs, comprising:

the chassis is provided with a stair climbing crawler belt which is driven by a first driving device;

the pedal lifting device is used for providing a supporting foundation for a user and is arranged on the chassis in a transmission way through the second driving device so as to move along the chassis;

the control device is arranged on the pedal lifting device and used for controlling the first driving device and the second driving device to act.

Preferably, in the stair climbing vehicle described above, the chassis includes:

the first driving device is arranged on the first track support;

the second track support is arranged on one side of the first track support in parallel, and the stair climbing track comprises a first stair climbing track sleeved on the first track support and a second stair climbing track sleeved on the second track support;

the two ends of the first supporting plate are respectively connected with the first track support and the second track support;

and the two ends of the second supporting plate are respectively connected with the first track support and the second track support, and the pedal lifting device is arranged between the first supporting plate and the second supporting plate in a transmission way.

Preferably, in the stair climbing vehicle, a first driving gear is arranged at one end of the first track bracket, which is close to the first driving device, and the first driving gear is meshed with the inner teeth of the first stair climbing track;

a second driving gear is arranged at one end of the second track support, which is close to the first driving device, and the second driving gear is meshed with the inner teeth of the second stair climbing track;

the first driving gear and the second driving gear are synchronously driven by a driving shaft, and the driving shaft is in transmission connection with the first driving device.

Preferably, in the stair climbing vehicle, the second driving device is disposed on the second supporting plate and is in transmission connection with the pedal lifting device, the control device is electrically connected with the second driving device, and the first supporting plate is closer to the first driving device than the second supporting plate.

Preferably, in the stair climbing vehicle, the foot-operated lifting device includes:

the lifting screw rod is arranged between the first supporting plate and the second supporting plate in parallel with the extending direction of the stair climbing crawler belt, the second driving device is a screw rod motor, and the output end of the second driving device is in transmission connection with the lifting screw rod;

the foot pedal is arranged on the lifting screw rod through screw nut transmission so as to move along the axial direction of the lifting screw rod.

Preferably, in the stair climbing vehicle, the foot plate forms an acute angle with the lifting screw rod, so that the included angle between the foot plate and the horizontal plane is not more than 15 degrees when the stair climbing vehicle climbs a stair.

Preferably, in the stair climbing vehicle, a folding pull rod is arranged below the foot pedal.

Preferably, in the stair climbing vehicle, the pedal lifting device further comprises a handrail rod arranged on the pedal, a control handrail is arranged at one end, far away from the pedal lifting device, of the handrail rod, and the control handrail is the control device.

Preferably, in the stair climbing vehicle, the control handrail is provided with a first control part and a second control part, the first control part is used for controlling the first driving device to act, and the second control part is used for controlling the second driving device to act.

Preferably, in the stair climbing vehicle, the first driving device includes:

the power supply equipment is arranged at one end of the first track bracket;

the gear motor is arranged at one end of the first track support, is electrically connected with the power supply equipment and is in transmission connection with the driving shaft.

The invention provides a stair climbing vehicle which is used for assisting a user to climb up and down stairs. The chassis is provided with a stair climbing crawler belt driven by a first driving device and used for climbing stairs up and down. The pedal lifting device is used for providing a supporting foundation for a user and is arranged on the chassis in a transmission way through the second driving device so as to move along the chassis. When the stair climbing vehicle crawls stairs, the pedal lifting device moves to the middle position of the chassis relatively close to the crawling front end of the stair climbing vehicle, so that when a user stands on the pedal lifting device, the gravity centers of the user and the stair climbing vehicle are kept relatively stable; when the stair climbing vehicle climbs to the last stage of step, the pedal lifting device moves to the position where the chassis is close to the last stage of step, so that a user can conveniently complete stair climbing actions. The control device is arranged on the pedal lifting device and used for controlling the first driving device to drive the stair climbing crawler to climb stairs and controlling the second driving device to drive the pedal lifting device to move at different positions of the chassis. The stair climbing vehicle provided by the invention can assist a user with a damaged auxiliary knee to conveniently climb up and down stairs, and compared with the existing stair climbing vehicle which performs stair climbing through a stair climbing wheelchair or a linear elevator, the stair climbing vehicle provided by the invention can be independently operated by the user and has lower cost.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front elevational view of a stair climbing vehicle according to an embodiment of the present invention;

FIG. 2 is an isometric view of a stair climbing vehicle according to an embodiment of the present disclosure at a first angle;

FIG. 3 is a top view of a stair climbing vehicle according to an embodiment of the present invention;

fig. 4 is a side view of a stair climbing vehicle according to an embodiment of the present invention.

Wherein 10 is a control device, 11 is a control handrail, 12 is a control button, 13 is a handrail rod, 20 is a chassis, 21 is a first track bracket, 22 is a second track bracket, 23 is a first supporting plate, 24 is a second supporting plate, 30 is a pedal lifting device, 31 is a pedal, 32 is a folding pull rod, 33 is a lifting screw rod, 34 is a second driving device, 40 is a stair climbing track, 41 is a driving shaft, and 100 is a stair.

Detailed Description

The core of the invention is to disclose a stair climbing vehicle so as to assist a user with damaged knees to conveniently climb up and down stairs.

Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the invention described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the invention described in the claims.

The inventor of the application finds that partial people with the knees damaged can walk normally on flat ground, but can go up and down stairs only with difficulty, but the stair climbing wheelchair in the prior art needs other people to assist in operation, and the operation flow is complex; the linear elevator is complex to install and high in cost, and occupies a certain corridor space, so that corridor traffic is hindered. In this regard, the inventors of the present application disclose a stair climbing vehicle to assist a user in conveniently ascending and descending stairs.

Referring to fig. 1 and 2, a stair climbing vehicle for assisting a user to climb up and down stairs 100 is disclosed, which includes a chassis 20, a foot lift 30, and a control device 10.

The chassis 20 is provided with a stair climbing crawler 40, and the stair climbing crawler 40 is driven by a first driving device to engage with a step angle and perform a crawling action of going up and down the stairs 100. It should be noted that the length of the chassis 20 should span at least two steps so that the stair climbing crawler 40 always engages with two adjacent step angles during stair climbing. Specifically, the chassis 20 may be made of an aluminum alloy, and the chassis 20 has a length of more than one meter. Further, in order to ensure the safety of climbing stairs, the width of the stair climbing crawler 40 may be appropriately adjusted according to the actual situation.

The foot pedal 30 is used to provide a supporting foundation for a user to stand on the foot pedal 30 while ascending and descending stairs 100. The foot lifting device 30 is arranged on the chassis 20 in a transmission way through the second driving device 34 so as to move along the chassis 20. For ease of understanding, if the distance between two adjacent step angles of the stair 100 is L, the length of the chassis 20 is not less than 2L. When the stair 100 is being crawled, the initial position of the pedal lifting device 30 is positioned at one end close to a user, so that the user conveniently takes a step towards the stair climbing vehicle, then the user moves to the middle position of the chassis 20 relatively close to the crawling front end of the stair climbing vehicle through the pedal lifting device 30, the length of the position where the user stands from the two ends of the chassis 20 is not smaller than L (namely, under the condition that the stair climbing vehicle is ensured not to overturn, the user stands at the position close to the crawling front end of the stair climbing vehicle as much as possible), so that the gravity centers of the user and the stair climbing vehicle are kept stable in the stair climbing process, and accidents such as overturn cannot occur; when the stair climbing vehicle climbs to the last step, the user moves to one end of the chassis 20 close to the last step through the pedal lifting device 30, so that the user can conveniently get off the stair climbing vehicle from a position close to the edge, and the stair climbing operation is completed.

In order to further simplify the construction of the stair-climbing vehicle, the foot-operated lifting device may be fixed to the chassis 20 at a position close to the middle without moving, and the user may need to step from the first step to the foot-operated lifting device and from the foot-operated lifting device to the last step.

The control device 10 is disposed on the foot-operated lifting device 30, and is used for controlling the first driving device and the second driving device 34 to act, so that the stair climbing action of the stair climbing crawler 40 and the movement of the foot-operated lifting device 30 on the chassis 20 are controlled by a user, and the user can conveniently operate the stair climbing vehicle to go up and down stairs 100.

Compared with the prior art adopting a stair climbing wheelchair or a stair climbing mode of a linear elevator, the stair climbing vehicle disclosed by the embodiment of the invention can assist a user to conveniently climb up and down stairs 100, and meanwhile, the user can operate by himself without the assistance of other people, so that the cost is lower, and the operation is safe and stable.

To better perform the stair climbing function of the stair climbing vehicle, the chassis 20 includes a first track support 21, a second track support 22, a first support plate 23, and a second support plate 24.

The first driving device is arranged on the first track bracket 21, and the first track bracket 21 is used for fixing the first driving device; the second track frame 22 is disposed in parallel on one side of the first track frame 21, and the stair climbing track 40 includes a first stair climbing track sleeved on the first track frame 21 and a second stair climbing track sleeved on the second track frame 22. The first and second stair climbing tracks are driven by a first driving device provided to the first track frame 21.

Both ends of the first support plate 23 are connected to the first track frame 21 and the second track frame 22, respectively; both ends of the second support plate 24 are respectively connected with the first track frame 21 and the second track frame 22, and the first support plate 23 and the second support plate 24 connect the first track frame 21 and the second track frame 22 to form the chassis 20 together. The foot lifting device 30 is arranged between the first support plate 23 and the second support plate 24 in a transmission manner so as to move at different positions of the chassis 20 in coordination with the stair climbing action of a user.

The stair climbing crawler 40 sleeved on the chassis 20 is used for performing stair climbing on the stair 100, and in order to better drive the stair climbing crawler 40 to climb stairs, one end of the first crawler support 21, which is close to the first driving device, is provided with a first driving gear which is meshed with the inner teeth of the first stair climbing crawler; a second drive gear is arranged at one end of the second track support 22 close to the first drive device, and the second drive gear is meshed with the inner teeth of the second stair climbing track; the first drive gear and the second drive gear are synchronously driven by a drive shaft 41, the drive shaft 41 being in driving connection with the first drive means. When a user uses the stair climbing vehicle to go upstairs and downstairs, the first driving device drives the first driving gear and the second driving gear to rotate through the driving shaft 41, and the first driving gear and the second driving gear drive the first stair climbing crawler and the second stair climbing crawler to rotate respectively, so that the stair climbing action of the stair climbing crawler 40 is realized.

It will be appreciated by those skilled in the art that the drive shaft 41 and the first driving device may be of a separate type as described above or may be of a unitary type. When the structure is integrated, the output shaft of the first driving device is in transmission connection with the first driving gear and the second driving gear, and the output shaft of the first driving device is the driving shaft 41.

In order to enable the user to perform the position movement on the chassis 20, as shown in fig. 3 and 4, the second driving device 34 is disposed on the second support plate 24 and is in transmission connection with the foot lifting device 30, the control device 10 is electrically connected with the second driving device 34, and the control device 10 can control the second driving device 34 to drive the foot lifting device 30 to perform the movement on the chassis 20. The first support plate 23 is arranged closer to the first drive means than the second support plate 24 such that the second drive means 34 evade the first drive means relatively closer to the first support plate 23.

It should be noted that the arrangement of the second driving device 34 may be adjusted according to the requirement, and only the movement of the foot lifting device 30 on the chassis 20 is not affected.

In order to better move the foot lift 30 over the chassis 20, the foot lift 30 includes a lift screw 33 and a foot pedal 31.

The lifting screw 33 is disposed between the first support plate 23 and the second support plate 24 in parallel with the extending direction of the stair climbing crawler 40 to provide a travel track for the footrests 31 in parallel with the extending direction of the stair climbing crawler 40. The second driving device 34 is a screw motor, and the output end is in transmission connection with the lifting screw 33 and is used for driving the lifting screw 33 to rotate. The foot pedal 31 is provided to the lift screw 33 by a nut transmission to move in the axial direction of the lift screw 33.

The foot rest 31 is used for supporting a user while climbing a stairs, and in order to keep the user stable while standing, the foot rest 31 forms an acute angle with the lifting screw 33, so that the angle between the foot rest 31 and the horizontal plane is not more than 15 ° when the stair climbing vehicle climbs a stairs. When the included angle between the foot pedal 31 and the horizontal plane is 0 °, the standing plane of the foot pedal 31 is parallel to the horizontal plane, which is a preferable solution.

In order to enhance the supporting ability of the foot pedal 31, a fold-over tie rod 32 is provided below the foot pedal 31. After the fold-over lever 32 is pulled open, the foot pedal 31 can be supported. In a specific embodiment of the present disclosure, one end of the foot pedal 31 is hinged to the chassis 20, and when the folding tie rod 32 is pulled open, the folding tie rod 32 supports the foot pedal 31, and simultaneously fixes the foot pedal 31 so that an included angle between the foot pedal 31 and a plane of the chassis 20 is not greater than 15 °, and supports a user; after folding pull rod 31 is packed up, folding pull rod 32 disappears to the fixed effect of running-board 31, and running-board 31 rotates to the direction of chassis 20 along the one end that articulates in chassis 20, finally laminates with the plane of chassis 20 to reduce the volume of stair climbing car, the user of being convenient for accomodate. This is the prior art and will not be described in detail here.

It should be noted that, the included angle between the foot plate 31 and the lifting screw 33 may be adjusted according to different gradients of stairs, so as to be convenient for users to use.

In order to enhance the safety of the user during the stair climbing process, the foot lifting device 30 further comprises a handrail rod 13 arranged on the foot pedal 31, the handrail rod 13 is used for supporting the user when standing, one end of the handrail rod 13 away from the foot lifting device 30 is provided with a control handrail 11, the control handrail 11 is a control device 10, the user can support the user when standing by grasping the control handrail 11, and the first driving device and the second driving device 34 can be conveniently controlled by the control handrail 11.

It will be appreciated by those skilled in the art that the control of the first and second drive means 34 may be performed by one control switch or may be performed by two control switches. In a specific embodiment of the present disclosure, the control arm rest 11 is provided with a first control part for controlling the first driving device to act so as to make the stair climbing crawler 40 perform the stair climbing operation, and a second control part for controlling the second driving device 34 to act so as to make the foot lifting device move along the chassis 20.

For driving the stair climbing crawler 40, the first driving device includes a power supply device and a reduction motor. The power supply apparatus is provided at one end of the first track frame 21 for supplying power to the speed reduction motor. Can be a battery jar, be convenient for the user to charge to the stair climbing car. The gear motor is provided at one end of the first track frame 21, and is electrically connected to a power supply device, and is drivingly connected to the drive shaft 41 to drive the stair climbing track 40. It should be noted that the speed reducing motor may be an integration of the driving motor and the speed reducing device, so that the rotation speed of the motor output is controlled in a relatively reasonable range.

The user can easily go upstairs and downstairs by operating the first control part and the second control part. In the embodiment of the invention, the first control part and the second control part are respectively a control button, and by pressing the first control part, the first driving device drives the stair climbing crawler 40 to start climbing stairs and drives a user to go upstairs and downstairs, the first control part is pressed again, the first driving device stops outputting, and the stair climbing crawler 40 stops acting; by pressing the second control part, the second driving device 34 drives the foot lifting device to move on the chassis 20, the second control part is pressed again, the second driving device 34 stops outputting, and the foot lifting device stops operating. The stair climbing vehicle disclosed by the embodiment of the invention has the advantages of simple and portable structure, quick use, no need of the assistance of another person, good stability, high safety, simple operation and lower cost, and ensures that the center of gravity of the stair climbing vehicle is basically stabilized at the middle position of the chassis 20 in the stair climbing process.

It will be appreciated by those skilled in the art that the first control portion and the second control portion may be integrated into one control button, and the control distinction between the first driving device and the second driving device 34 is performed by long pressing and short pressing, which is the prior art and will not be described herein.

In another embodiment of the present disclosure, when the user uses the stair climbing vehicle, the user places one end (the driving end, and the crawling front end) of the stair climbing vehicle provided with the first driving device on the step to be crawled, the external teeth of the stair climbing crawler 40 are engaged with the step angle, the foot pedal 31 is positioned at the other end of the stair climbing vehicle close to the standing ground, the user can conveniently step on the foot pedal 31 from the standing ground and stand on the foot pedal 31, then presses the control button of the second control part to enable the lead screw motor to operate, and the lead screw motor drives the foot pedal 31 to operate to the middle position of the chassis 20 relatively close to the driving end of the stair climbing vehicle and automatically stops. Then, the control button of the first control part is pressed once to control the first driving device to drive the driving shaft 41 to rotate, and the driving shaft 41 drives the first driving gear and the second driving gear to rotate, so that the stair climbing crawler 40 rotates along with the first driving gear and the second driving gear, and the stair climbing vehicle starts to climb on the stair 100. When the driving end of the stair climbing vehicle moves to the last step, the user presses the control button of the first control part once again, the first driving device stops operating, then the user presses the control button of the second control part to enable the lead screw motor to operate, and the lead screw motor drives the pedal plate 31 to move from the middle position of the chassis 20 to one end of the chassis 20 close to the driving end and automatically stops. The user takes a step from the foot pedal 31 to the corridor platform and goes upstairs. For convenience of next use, the user may control the screw motor to be reversed by the control button of the second control part to move the foot pedal 31 to the other end of the chassis 20 away from the driving end. The downstairs process is the reverse process of upstairs.

The stair climbing vehicle disclosed by the embodiment of the invention has a simple structure and light weight, and a user can easily lift the stair climbing vehicle by controlling the handrails 11 or the handrails 13 in daily life. When the stair climbing vehicle climbs to the stair rest platform between the stair sections, the user can make a transition of the stair rest platform by lifting the stair climbing vehicle.

The terms first and second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to the listed steps or elements but may include steps or elements not expressly listed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stair climbing vehicle for assisting a user in ascending and descending stairs (100), comprising:

the stair climbing device comprises a chassis (20), wherein a stair climbing crawler belt (40) is arranged on the chassis (20), and the stair climbing crawler belt (40) is driven by a first driving device;

the pedal lifting device (30) is used for providing a supporting foundation for a user and is arranged on the chassis (20) in a transmission way through the second driving device (34) so as to move along the chassis (20);

and a control device (10) which is arranged on the pedal lifting device (30) and is used for controlling the first driving device and the second driving device (34) to act.

2. The stair climbing vehicle according to claim 1, wherein the chassis (20) comprises:

a first track frame (21), the first drive device being arranged on the first track frame (21);

the second track support (22) is arranged on one side of the first track support (21) in parallel, and the stair climbing track (40) comprises a first stair climbing track sleeved on the first track support (21) and a second stair climbing track sleeved on the second track support (22);

a first support plate (23) with both ends respectively connected to the first track frame (21) and the second track frame (22);

the second support plate (24) is connected with the first track support (21) and the second track support (22) at two ends respectively, and the pedal lifting device (30) is arranged between the first support plate (23) and the second support plate (24) in a transmission manner.

3. The stair climbing vehicle according to claim 2, wherein a first drive gear is provided at an end of the first track frame (21) adjacent to the first drive means, the first drive gear being in mesh with the internal teeth of the first stair climbing track;

a second driving gear is arranged at one end, close to the first driving device, of the second track support (22), and the second driving gear is meshed with the inner teeth of the second stair climbing track;

the first driving gear and the second driving gear are synchronously driven by a driving shaft (41), and the driving shaft (41) is in transmission connection with the first driving device.

4. The stair climbing vehicle according to claim 2, wherein the second driving device (34) is disposed on the second support plate (24) and is in transmission connection with the foot-operated lifting device (30), the control device (10) is electrically connected with the second driving device (34), and the first support plate (23) is disposed closer to the first driving device than the second support plate (24).

5. The stair-climbing vehicle according to claim 4, wherein the foot-operated lifting device (30) comprises:

the lifting screw rod (33) is arranged between the first supporting plate (23) and the second supporting plate (24) in parallel with the extending direction of the stair climbing crawler belt (40), the second driving device (34) is a screw rod motor, and the output end of the second driving device is in transmission connection with the lifting screw rod (33);

and a foot pedal (31) which is arranged on the lifting screw (33) through a screw drive so as to move along the axial direction of the lifting screw (33).

6. The stair-climbing vehicle according to claim 5, wherein the foot pedal (31) is at an acute angle to the lifting screw (33) such that the angle between the foot pedal (31) and the horizontal is no greater than 15 ° when the stair-climbing vehicle is climbing a stairs.

7. The stair climbing vehicle according to claim 6, characterized in that a folding tie rod (32) is provided below the foot pedal (31).

8. The stair-climbing vehicle according to claim 5, wherein the foot-operated lifting device (30) further comprises a grab bar (13) provided on the foot-operated plate (31), a control handrail (11) is provided at an end of the grab bar (13) remote from the foot-operated lifting device (30), and the control handrail (11) is the control device (10).

9. The stair climbing vehicle according to claim 8, wherein the control handrail (11) is provided with a first control portion for controlling the first drive means to operate and a second control portion for controlling the second drive means (34) to operate.

10. The stair climbing vehicle according to claim 3, wherein the first drive comprises:

a power supply device provided at one end of the first track frame (21);

and the speed reducing motor is arranged at one end of the first track bracket (21), is electrically connected with the power supply equipment and is in transmission connection with the driving shaft (41).