CN110882111A

CN110882111A - Elevator with stair climbing function

Info

Publication number: CN110882111A
Application number: CN201911320118.1A
Authority: CN
Inventors: 戴跃根; 朱建新; 张陈; 苏天宝
Original assignee: SUZHOU TAILING ELEVATOR CO Ltd
Current assignee: SUZHOU TAILING ELEVATOR CO Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-03-17

Abstract

The invention discloses an elevator with stair climbing function, comprising: climb building subassembly, climb building subassembly and include: a main body frame; a track unit comprising: the crawler belt is arranged on the main body frame and can move relative to the main body frame, the rollers are arranged in a certain area of the main body frame, the axes of the rollers are parallel to each other and are positioned in the same plane, the axis of each roller is perpendicular to the moving direction of the crawler belt, the crawler belt is pressed on the rollers on the inner side surface of the area, and the crawler belt is pressed on the stairs on the outer side surface of the area; and a driving unit driving the crawler. According to the elevator with the stair climbing function, when the elevator climbs stairs, the outer side surface of the crawler belt is in contact with the stairs, the inner side surface of the crawler belt is in contact with the plurality of rollers, and the plurality of rollers support the crawler belt, so that the crawler belt is in rolling friction relative to the main body frame, and the friction force of the crawler belt in movement relative to the main body frame is reduced.

Description

Elevator with stair climbing function

Technical Field

The invention relates to the technical field of equipment for climbing stairs, in particular to an elevator with a stair climbing function.

Background

The wheelchair is an indispensable travel tool for the disabled with injured lower limbs and the old and the weak, the movable range of the wheelchair user is gradually enlarged along with the increase of barrier-free facilities, and the use of the wheelchair is limited to a great extent by the stairs. Therefore, it is a relatively urgent task for rehabilitation medical workers to design and develop a relatively cheap, simple and practical stair-climbing wheelchair. The appearance of stairs is an important achievement in human building history, which reduces the building area of a house, fully utilizes the limited volume, and is used as a vehicle with a vertical angle, and the stairs tightly connect layers. Particularly, at present, the economy is rapidly developed and the population is increased day by day, in order to reasonably utilize the remained land space, the appearance of the high-rise residential building improves the residential area per capita and the life quality of people. These new residential buildings are equipped with lifting devices such as elevators, however, most of the houses in cities of China are built in multi-storey buildings before 2000 years, and elevators are not installed due to the limitations of the design specifications and economic conditions at that time. Today, with the increase of old residential areas, many of the households in these areas are also growing in age, and they often feel laborious, time-consuming and frustrating to walk up and down stairs, and many elderly people therefore become "imprisoned" on so-called high-rise buildings.

Chinese patent publication No. CN109091319A discloses a crawler-type stair-climbing wheelchair, which comprises a folding connecting rod, a main upright post hinged to the folding connecting rod, a folding driving frame rotatably mounted at the lower end of the main upright post, a seat main body mounted at the middle part of the main upright post by a rotating shaft, a front wheel support frame mounted at the front end of the seat main body by a rotating shaft, a pedal rotatably mounted at the lower end of the front wheel support frame, a stair-climbing crawler assembly mounted at the main upright post by a lower end hinge, and a folding device for connecting the main upright post and the stair-climbing crawler assembly, wherein the stair-climbing crawler assembly comprises a crawler support, a crawler mounted on the crawler support, a motor for driving the crawler to rotate, and a battery pack for supplying electric energy to the motor, wherein the battery pack is fixed at.

In the above patent, the track moves relative to the track frame, thereby allowing stairs to be climbed. Because the whole weight of the crawler-type stair climbing wheelchair is uniformly distributed on the crawler, a large sliding friction force is generated between the crawler support and the crawler, and the stair climbing is hindered.

Disclosure of Invention

The invention aims to provide an elevator with a stair climbing function, and the friction force between a track and a track support is reduced.

In order to solve the technical problem, the invention provides an elevator with a stair climbing function, which comprises: seat subassembly, connecting frame and the subassembly of climbing the building, the seat subassembly passes through connecting frame with the subassembly of climbing the building is connected, the subassembly of climbing the building includes:

a main body frame connected with the connection frame;

a track unit comprising: the crawler belt is mounted on the main body frame and can move relative to the main body frame, the rollers are mounted in a certain area of the main body frame, the axes of the rollers are parallel to each other and are positioned in the same plane, the axis of each roller is perpendicular to the moving direction of the crawler belt, the crawler belt is pressed on the rollers on the inner side surface of the area, and the crawler belt is pressed on the stairs on the outer side surface of the area;

and a driving unit installed on the main body frame to drive the crawler.

Furthermore, the rollers are divided into M groups, M is more than or equal to 2 and is a natural number, each group comprises a plurality of rollers, and the M groups are arranged along the axial direction of the rollers, wherein the rollers in each group are uniformly distributed along the moving direction of the crawler belt, and the distance between every two adjacent rollers is N; the M groups are sequentially arranged in a staggered mode along the moving direction of the crawler, and the dislocation quantity between every two adjacent groups is N/M.

Further, the diameter of the roller is not less than 1 time and not more than 1.2 times.

Further, the two crawler units are arranged, and two of the two crawlers of the two crawler units are arranged in parallel at intervals.

Further, still include in the track unit: the driving wheel and the driven wheel are respectively installed on the main body frame, the axis of the driving wheel is parallel to the axis of the driven wheel and has a certain distance with the axis of the driven wheel, the crawler belt is wound on the driving wheel and the driven wheel, the area is located between the driving wheel and the driven wheel, the driving unit drives the driving wheel to rotate, the driving wheel drives the crawler belt to move, the first pressing wheel is installed on the main body frame and presses the crawler belt on the driving wheel from the side face, and the winding angle of the crawler belt on the driving wheel is larger than 180 degrees.

Further, still include in the track unit: and the second pressing wheel is arranged on the main body frame, presses the crawler belt on the driven wheel from the side surface, and enables the winding angle of the crawler belt on the driven wheel to be larger than 180 degrees.

Further, still include in the track unit: and the tensioning wheel module is arranged on the main body frame and is abutted to the crawler belt, so that the crawler belt is in a tensioning state.

Further, the tensioner module comprises: the first base is fixed on the main body frame, the first base is provided with a first cavity, one end of the support is matched with the first cavity, the support is sleeved in the first base and can move back and forth in the first direction, the elastic piece is arranged in the first cavity and clamped between the support and the first base and is in a compression state all the time, the elastic piece is telescopic in the first direction, the wheel body is fixed at the other end of the support and can rotate, and the wheel body is abutted to the track.

Further, the tensioner module further comprises: the second base is fixed on the main body frame, the second base is provided with a second cavity, the first base is matched with the second cavity, the first base is sleeved in the second base and can reciprocate in the second direction relative to the second base, the pull rod is in threaded connection with the second base, one end of the pull rod is located in the second cavity and movably connected with the first base, the pull rod can rotate relative to the first base, and the other end of the pull rod is located outside the second cavity.

Further, the second direction is the same direction as the first direction.

Has the advantages that:

according to the elevator with the stair climbing function, when the elevator climbs stairs, the outer side surface of the crawler belt is in contact with the stairs, the inner side surface of the crawler belt is in contact with the plurality of rollers, and the plurality of rollers support the crawler belt, so that the crawler belt is in rolling friction relative to the main body frame, and the friction force of the crawler belt in movement relative to the main body frame is reduced.

Drawings

Fig. 1 is a schematic three-dimensional structure of a first embodiment of an elevator having a stair climbing function according to the present invention;

fig. 2 is a schematic structural view of an elevator with a stair climbing function according to an embodiment of the present invention in a stair climbing state;

fig. 3 is a schematic structural view of an elevator with stair climbing function according to an embodiment of the present invention in a walking state on flat ground;

fig. 4 is a schematic three-dimensional structure of a stair climbing assembly in one embodiment of the elevator of the present invention;

fig. 5 is a front view of a stair climbing assembly in one embodiment of the elevator of the present invention;

FIG. 6 is an enlarged view of detail A of FIG. 5;

FIG. 7 is a left side view of FIG. 5;

FIG. 8 is an enlarged view of detail B of FIG. 7;

fig. 9 is a schematic structural view of a stair climbing assembly in a second embodiment of the elevator of the present invention;

fig. 10 is a front view of a tension module in a second embodiment of the elevator of the present invention having a stair climbing function;

FIG. 11 is a cross-sectional view C-C of FIG. 10;

fig. 12 is a right side view of fig. 10.

In the figure, 1, a seat assembly, 2, a connecting frame, 3, a stair climbing assembly, 4, a main body frame, 5, a crawler belt, 6, a roller, 7, a driving unit, 8, a driving wheel, 9, a driven wheel, 10, a first pinch roller, 11, a second pinch roller, 19, a tensioning wheel unit, 1901, a wheel body, 1902, a bracket, 1903, a first base, 1904, a second base, 1905, a pull rod, 1906 and an elastic piece are arranged.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

The first embodiment is as follows:

an elevator having a stair climbing function, as shown in fig. 1 to 3, includes: seat subassembly 1, linking frame 2 and stair climbing subassembly 3, seat subassembly 1 is connected with stair climbing subassembly 3 through linking frame 2, and stair climbing subassembly 3 can be packed up or put down relatively seat subassembly 1. The seat assembly 1 is used for a person to sit, and the stair climbing assembly 3 is used for climbing stairs. When walking on the level land, will climb building subassembly 3 and pack up, seat subassembly 1 is unanimous with conventional wheelchair, when needing to climb stair, puts down building subassembly 3 of climbing, climbs building subassembly 3 and drives seat subassembly 1 and scrambles stair. The above contents are basically the same as that of the Chinese patent with publication number CN109091319A, and can be mutually referred. The important point of this application lies in the improvement to climbing building subassembly 3 to it receives less frictional force to make the climbing in-process track, specifically as follows:

stair climbing assembly 3 includes:

the main body frame 4 is connected with the connecting frame 2 and mainly plays a role of structural support in the stair climbing assembly 3;

a track unit comprising: a plurality of rollers 6 and an endless track 5, the track 5 is mounted on the main body frame 4 and can move relative to the main body frame 4, the plurality of rollers 6 are mounted on a certain area of the main body frame 2, the area is an area corresponding to the stair when the main body frame 2 faces the stair when climbing the stair, the axes of the plurality of rollers 6 are parallel to each other and are positioned in the same plane, the axis of each roller 6 is perpendicular to the moving direction of the track 5, the track 5 is pressed on the plurality of rollers 6 on the inner side surface of the corresponding area, and the track 5 is pressed on the stair on the outer side surface of the corresponding area;

and a driving unit 7 mounted on the main body frame 4 and driving the crawler 5.

In the above embodiment, when climbing stairs, the outer side surface of the crawler 5 is in contact with the stairs, the inner side surface of the crawler 5 is in contact with the plurality of rollers 6, and the plurality of rollers 6 play a role of supporting the crawler 5, so that the crawler 5 rolls and rubs with respect to the main body frame 4, and the friction force when the crawler 4 moves with respect to the main body frame 4 is reduced.

With continued reference to fig. 5 to 8, the track 5 and the rollers 6 are in line contact, and a pit always exists between two adjacent rollers 6 along the moving direction of the track 5 (vertical direction in fig. 8), so that a sharp corner of a stair (a contact part of the stair and the track 5) is clamped into the pit in the process of climbing the stair, and a bumpy feeling is generated in the process of continuously climbing the stair. In order to reduce the bumpy feeling, it is necessary to reduce the dimples as much as possible. Specifically, the rollers 6 are divided into M groups, M is greater than or equal to 2 and is a natural number, each group comprises a plurality of rollers 6, and the M groups are arranged along the axial direction (horizontal direction in fig. 6) of the rollers 6, wherein the rollers 6 in each group are uniformly distributed along the movement direction of the crawler 5, and the distance between two adjacent rollers 6 is N; the M groups are arranged along the moving direction of the crawler belt in a staggered mode in sequence, and the dislocation quantity between every two adjacent groups is N/M. As an example. The plurality of rollers 6 in this embodiment are divided into 4 groups, and are arranged in 4 rows in fig. 6.

Of course, the smaller the offset N/M, i.e., the smaller the pit, the more stable the climbing. In order to reduce the amount of displacement N/M, the pitch N is reduced on the one hand, and the number of sets M is increased on the other hand, generally the width of the crawler 5 is limited, and the degree of increase of the number of sets M is limited, mainly by reducing the pitch N. To reduce the spacing N, the rollers 6 in each group are arranged as closely as possible using rollers 6 of smaller diameter. For reference, 1 time the diameter of the roller 6 is not more than N not more than 1.2 times the diameter of the roller 6.

In addition, as shown in fig. 1 and 4, in order to ensure that the crawler belts 5 have a large span to ensure the stability of the seat assembly 1 during climbing stairs, two crawler belt units are provided, and two crawler belts 5 of the two crawler belt units are arranged in parallel at intervals.

Example two:

in the first embodiment, the caterpillar 5 generates a large pushing force to the body frame 4 to move it up and down the stairs. This requires that no slip between the track 5 and the body frame 4 is possible. The present embodiment is a further improvement on the first embodiment such that there is no slip between the crawler belt 5 and the main body frame 4.

As shown in fig. 9, the crawler unit further includes: drive wheel 8, from driving wheel 9 and first pinch roller 10, drive wheel 8 and from driving wheel 9 install respectively on main body frame 4, the axis of drive wheel 8 with from driving wheel 9 axis parallel and at a distance of certain distance, track 5 is around locating drive wheel 8 and from driving wheel 9, the region is located between drive wheel 8 and the follow driving wheel 9, a plurality of gyro wheels 6 install between drive wheel 8 and follow driving wheel 9 promptly, drive unit 7 drives drive wheel 8 and rotates, drive wheel 8 drives track 5 motion, first pinch roller 10 is installed on main body frame 4 and is located drive wheel 8 with track 5 pressure from the side, and make track 5 twine angle on drive wheel 8 be greater than 180 degrees. The crawler belt 5 and the driving wheel 8 are ensured not to slide, and the thrust is better transmitted to push the main body frame 4 to move up and down along the stairs.

Similarly, as shown in fig. 9, the crawler unit further includes: and the second pressing wheel 11 is arranged on the main body frame 4, the crawler 5 is pressed on the driven wheel 9 from the side surface, and the winding angle of the crawler 5 on the driven wheel 9 is larger than 180 degrees.

Further, as shown in fig. 9, a tension pulley module 19 may be provided to prevent slipping between the drive wheels 8 and the crawler 5. The idler module 19 is mounted on the body frame 4 and rests on the tracks 5 such that the tracks 5 are in tension.

Specifically, as shown in fig. 10 to 12, the tensioning sheave unit 19 includes: the wheel body 1901, the support 1902, the first base 1903 and the elastic member 1906, the first base 1903 is fixed on the main body frame 4, the first base 1904 has a first cavity, one end of the support 1902 is matched with the first cavity, the support 1902 is sleeved in the first base 1903 and can move back and forth in the first direction relative to the first base 1903, the elastic member 1906 is disposed in the first cavity, and is sandwiched between the support 1902 and the first base 1903 and is always in a compressed state, the elastic member 1906 is telescopic in the first direction, the wheel body 1901 is fixed at the other end of the support 1902 and can rotate, and the wheel body 1902 is pressed on the track 5. The elastic piece 1906 is arranged between the wheel body 1901 and the first base 1902 for buffering, so that the wheel body 1901 can adjust the tightness along with the operation of the conveyor belt 8, ensure proper damping, reduce vibration and ensure the stability of operation.

To facilitate adjustment of the tension, as shown in fig. 10 to 12, the tension pulley unit 19 further includes: a second base 1904 and a pull rod 1905, the second base 1904 is fixed on the main body frame 4, the second base 1904 has a second cavity, the first base 1903 is matched with the second cavity, the first base 1903 is sleeved in the second base 1904 and can reciprocate in the second direction relative to the second base 1904, the pull rod 1905 is in threaded connection with the second base 1904, one end is located in the second cavity and movably connected with the first base 1903, and can rotate relative to the first base 1903, and the other end is located outside the second cavity. When the tension is adjusted, the tension is changed by rotating the lever 1905 to change the position of the first base 1903.

Preferably, the second direction is the same direction as the first direction.

In this embodiment, the tensioning wheel unit 19, the first pressing wheel 10 and the second pressing wheel 11 may be applied separately or in combination.

The rest of this embodiment is the same as the first embodiment, and will not be described herein again.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. An elevator having a stair climbing function, comprising: seat subassembly, connecting frame and the subassembly of climbing the building, the seat subassembly passes through connecting frame with the subassembly of climbing the building is connected, the subassembly of climbing the building includes:

a main body frame connected with the connection frame;

and a driving unit installed on the main body frame to drive the crawler.

2. The elevator with the stair climbing function according to claim 1, wherein the rollers are divided into M groups, M is greater than or equal to 2 and is a natural number, each group comprises a plurality of rollers, the M groups are arranged along the axial direction of the rollers, the rollers in each group are uniformly distributed along the moving direction of the crawler, and the distance between every two adjacent rollers is N; the M groups are sequentially arranged in a staggered mode along the moving direction of the crawler, and the dislocation quantity between every two adjacent groups is N/M.

3. The elevator with the function of climbing stairs according to claim 2, wherein the diameter of the roller is more than or equal to 1 time and less than or equal to N and less than or equal to 1.2 times.

4. The elevator having a stair climbing function according to claim 1, wherein said track units are provided in two, and two of said tracks of said two track units are arranged in parallel at a spacing.

5. The elevator having a stair climbing function according to claim 1, further comprising in said crawler unit: the driving wheel and the driven wheel are respectively installed on the main body frame, the axis of the driving wheel is parallel to the axis of the driven wheel and has a certain distance with the axis of the driven wheel, the crawler belt is wound on the driving wheel and the driven wheel, the area is located between the driving wheel and the driven wheel, the driving unit drives the driving wheel to rotate, the driving wheel drives the crawler belt to move, the first pressing wheel is installed on the main body frame and presses the crawler belt on the driving wheel from the side face, and the winding angle of the crawler belt on the driving wheel is larger than 180 degrees.

6. The elevator having a stair climbing function according to claim 5, further comprising in said crawler unit: and the second pressing wheel is arranged on the main body frame, presses the crawler belt on the driven wheel from the side surface, and enables the winding angle of the crawler belt on the driven wheel to be larger than 180 degrees.

7. The elevator having a stair climbing function according to claim 1, further comprising in said crawler unit: and the tensioning wheel module is arranged on the main body frame and is abutted to the crawler belt, so that the crawler belt is in a tensioning state.

8. The elevator having the stair climbing function according to claim 7, wherein the tension pulley module comprises: the first base is fixed on the main body frame, the first base is provided with a first cavity, one end of the support is matched with the first cavity, the support is sleeved in the first base and can move back and forth in the first direction, the elastic piece is arranged in the first cavity and clamped between the support and the first base and is in a compression state all the time, the elastic piece is telescopic in the first direction, the wheel body is fixed at the other end of the support and can rotate, and the wheel body is abutted to the track.

9. The elevator having the stair climbing function according to claim 8, wherein the tension pulley module further comprises: the second base is fixed on the main body frame, the second base is provided with a second cavity, the first base is matched with the second cavity, the first base is sleeved in the second base and can reciprocate in the second direction relative to the second base, the pull rod is in threaded connection with the second base, one end of the pull rod is located in the second cavity and movably connected with the first base, the pull rod can rotate relative to the first base, and the other end of the pull rod is located outside the second cavity.

10. The elevator having a stair climbing function according to claim 9, wherein the second direction is the same direction as the first direction.