Stair climbing machine

Abstract

The utility model relates to a stair climbing machine, which belongs to the technical field of stair climbing wheelchairs and comprises a seat part, a walking part and a supporting part. The supporting part is installed at the upper end of the walking part, the seat part is detachably connected with the walking part through the supporting part, the walking part comprises a flat ground walking mechanism and a ladder stand mechanism, the ladder stand mechanism and the flat ground walking mechanism are obliquely arranged from bottom to top at an angle, and the flat ground walking mechanism is used for walking on the flat ground; the flat ground walking mechanism moves to the upper part of the ladder climbing mechanism and is used for the ladder climbing mechanism to climb on stairs; by the adoption of the symmetrically-arranged crawler belt frames and the pair of crawler belts, the stability of the stair climbing machine during stair climbing is enhanced, and the risks of overturning and slipping are reduced; secondly, a crawler motor and a chain transmission system are used, efficient and stable power transmission is achieved, the transmission efficiency of the stair climbing machine is improved, and the service life of the stair climbing machine is prolonged; and meanwhile, the stair climbing machine can adapt to stairs of different specifications through rotating connection of the driving wheels and the crawler belts.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair climbing wheelchairs, and in particular relates to a stair climbing machine. Background Art

[0002] Although traditional stair climbing machines have met the needs of helping people with limited mobility to go up and down stairs to a certain extent, they have problems such as poor stability, low transmission efficiency, and insufficient adaptability.

[0003] Traditional stair climbing machines are often prone to tipping over or slipping when climbing stairs due to unstable structures or insufficient grip. Secondly, traditional transmission methods may have problems with energy loss and unstable transmission. The heights and spacings of different stairs may vary, and traditional stair climbing machines may find it difficult to adapt to these changes. These problems limit the scope of use of stair climbing machines and user experience. Therefore, it is necessary to improve and innovate existing technologies to develop safer, more stable and practical stair climbing machines.

[0004] The present invention aims to solve the problems existing in the prior art and provide a more stable and efficient building crane. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a stair climbing machine, which solves the problems of poor power transmission, poor climbing stability and poor adaptability of the existing stair climbing machines during crawling.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A stair climbing machine, comprising a seat part, a walking part and a support part; the support part is mounted on the upper end of the walking part, the seat part is detachably connected to the walking part through the support part, the walking part comprises a ground walking mechanism and a ladder mechanism, the ladder mechanism is arranged at an angle with the ground walking mechanism from bottom to top, the ground walking mechanism is used for ground walking, and in a climbing state, the ground walking mechanism moves to the upper part of the ladder mechanism, so that the ladder mechanism can climb stairs;

[0008] The ladder climbing mechanism includes a symmetrically arranged crawler frame, a pair of crawlers, a driving wheel, a crawler motor and a chain transmission system; the pair of crawlers are respectively installed on the crawler frames, the crawler motor is arranged between the symmetrical crawler frames, the driving wheel is installed on one side of the crawler frame and is located on the same side as the crawler motor, the crawler is rotatably connected to the driving wheel, and the output shaft of the crawler motor is connected to the driving wheel through the chain transmission system for driving the crawler to rotate.

[0009] Preferably, the bottom surface of the track frame is also provided with a cover for protecting the track and other parts installed on the track frame.

[0010] Preferably, the ladder climbing mechanism also includes a driven wheel and a tensioning mechanism; the driven wheel is installed on the side of the track frame away from the driving wheel, and the tensioning mechanism is clamped and installed on the same side as the driven wheel for adjusting the distance between the driven wheel and the driving wheel, thereby adjusting the tension of the track.

[0011] Preferably, the level ground walking mechanism includes a front wheel assembly, and the front wheel assembly is installed at the front end of the track frame; the front wheel assembly includes a front electric push rod, a front crank, a front drive shaft, a pair of front legs and a pair of omnidirectional wheels; a support rod is symmetrically arranged between the track frames, the fixed end of the front electric push rod is installed on the support rod, the front drive shaft is rotatably installed on the track frame, the telescopic end of the front electric push rod is connected to the front drive shaft through the front crank, one of the front wheel assemblies is connected to the front drive shaft through one of the front legs, a pair of the front wheel assemblies are symmetrically arranged at both ends of the front drive shaft, and the track frame is located between the pair of the front drive shafts.

[0012] Preferably, the level ground walking mechanism also includes a rear wheel assembly, which is installed at the rear end of the front wheel assembly, and the rear wheel assembly includes a pair of rear electric push rods, a pair of rear cranks, a pair of rear transmission shafts and a pair of rear leg parts; the pair of electric push rods are symmetrically arranged on the inner side of the track frame, the telescopic end of one of the rear electric push rods is connected to one of the rear cranks, and a pair of rear transmission shafts are both rotatably installed on the track frame, and any of the rear wheel assemblies is connected to the rear crank via the rear transmission shaft.

[0013] Preferably, the rear leg component includes a bent rear leg, a mudguard, a rear wheel, a rear drive motor and a brake handle; the rear leg is fixedly connected to the rear drive shaft, the rear drive motor is installed at the end of the rear leg, and the output end of the rear drive motor is connected to the rear wheel; the mudguard is arranged at the upper and middle part of the rear drive motor and the rear wheel, and the brake handle passes through the mudguard and is connected to the rear drive motor.

[0014] The beneficial effects of the utility model are:

[0015] By adopting a symmetrically arranged crawler frame and a pair of crawlers, this design significantly enhances the stability of the stair climber when climbing stairs and reduces the risk of tipping over and slipping; secondly, the use of crawler motors and chain drive systems achieves efficient and smooth power transmission, improving the transmission efficiency and service life of the stair climber; at the same time, through the rotational connection between the drive wheel and the crawler, the stair climber can adapt to stairs of different specifications, improving the applicability of the machine and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of a stair climbing machine provided in one embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the connection between the ground walking mechanism and the ladder climbing mechanism provided in one embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a crawler frame installation structure provided in one embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the rear leg component provided in one embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the rear leg connection structure provided in one embodiment of the utility model;

[0022] Figure 6 A schematic diagram of a fender connection structure provided in one embodiment of the utility model;

[0023] Legend: 1. Support part; 11. Main electric pole; 2. Seat part; 3. Level walking mechanism; 31. Front electric push rod; 32. Front crank; 33. Front drive shaft; 34. Front outrigger; 35. Omnidirectional wheel; 36. Rear electric push rod; 37. Rear crank; 38. Rear drive shaft; 39. Rear leg part; 4. Ladder mechanism; 41. Track frame; 42. Track; 43. Driving wheel; 44. Track motor; 45. Driven wheel; 46. Tensioning mechanism; 51. Rear outrigger; 52. Mudguard; 53. Rear wheel; 54. Rear drive motor; 55. Brake handle. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-Figure 6As shown, a stair climbing machine comprises a seat part 2, a support part 1 and a walking part; the support part 1 is arranged between the seat part 2 and the walking part, the seat part 2 is supported by the support part 1, and the height adjustment of the seat part 2 is realized, wherein the support part 1 is provided with a main electric rod 11, the walking part is fixedly arranged at the fixed end of the main electric rod 11, and the telescopic end is arranged at the seat part 2, and the height adjustment of the seat part 2 is realized by lifting and lowering the main electric rod 11; the walking part is used for walking on flat ground or stairs, the walking part comprises a flat ground walking mechanism 3 and a ladder mechanism 4, the ladder mechanism 4 is arranged at an angle from bottom to top with the flat ground walking mechanism 3, the flat ground walking mechanism 3 is used for walking on flat ground, and in the climbing state, the flat ground walking mechanism 3 moves to the upper part of the ladder mechanism 4, and is used for the ladder mechanism 4 and the stairs to climb the stairs, so that the stair climbing machine has the ability of horizontal walking and climbing stairs, in addition, when walking on flat ground, the lifting and lowering of the seat assembly can be realized by the support part 1, so that the seat height of the seat part 2 can be adjusted, and the height of the seat part 2 can be adjusted according to different usage scenarios, which provides convenience for the user's life and increases the application scope of the stair climbing machine;

[0026] The ladder climbing mechanism 4 includes a symmetrically arranged track frame 41, a pair of crawlers 42, a driving wheel 43, a crawler motor 44 and a chain transmission system; a pair of crawlers 42 are respectively installed on the crawler frames 41, the crawler motor 44 is arranged between the symmetrical crawler frames 41, the driving wheel 43 is installed on one side of the crawler frame 41 and is located on the same side as the crawler motor 44, the crawler 42 is rotatably connected to the driving wheel 43, and the output shaft of the crawler motor 44 is connected to the driving wheel 43 through a chain transmission system to drive the crawler 42 to rotate. Traditional stair climbing machines are often prone to overturning or slipping when climbing stairs due to unstable structure or insufficient grip. By adopting a symmetrically arranged track frame 41 and a pair of crawlers 42, this design significantly enhances the stability of the stair climbing machine when climbing stairs and reduces the risk of overturning and slipping; secondly, traditional transmission methods may have problems of energy loss and unstable transmission. By using the crawler motor 44 and the chain drive system, efficient and smooth power transmission is achieved, and the transmission efficiency and service life of the stair climbing machine are improved; at the same time, the heights and spacings of different stairs may vary, and traditional stair climbing machines may find it difficult to adapt to these changes. Through the rotational connection between the drive wheel 43 and the crawler 42, this design enables the stair climbing machine to adapt to stairs of different specifications, improving the applicability of the machine and user experience.

[0027] In one embodiment, a cover is further provided on the bottom surface of the track frame 41 for protecting the track 42 and other parts installed on the track frame 41, so as to prevent the track 42 and installed parts from being worn when climbing the ladder, thereby reducing the replacement and maintenance costs of the ladder and reducing the life of the track 42 and parts; at the same time, the setting of the cover makes the climbing surface of the stair climber smooth, makes the side of the stair climber in contact with the stairs tidy, reduces the risk of scratches on the stair climber and improves safety.

[0028] In one embodiment, the ladder mechanism 4 also includes a driven wheel 45 and a tensioning mechanism 46; the driven wheel 45 is installed on the side of the track frame 41 away from the driving wheel 43, and the tensioning mechanism 46 is clamped and installed on the same side of the driven wheel 45, and is used to adjust the tension between the driven wheel 45 and the driving wheel 43. The tensioning mechanism 46 adjusts the position of the driven wheel 45 by screwing a screw, so as to achieve the purpose of tightening the crawler track 42. Suitable tension can reduce the friction between the crawler track 42 and the ground, thereby reducing the wear rate of the crawler track 42 and extending its service life. By adjusting the distance between the driven wheel 45 and the driving wheel 43, the purpose of tensioning the crawler track 42 is achieved, which can ensure that the crawler track 42 can adapt to stairs of various terrains and can fit the stairs for climbing, thereby improving the stability and use effect of the ladder.

[0029] In one embodiment, the flat-ground walking mechanism 3 includes a front wheel assembly, which is mounted on the front end of the crawler frame 41; the front wheel assembly includes a front electric push rod 31, a front crank 32, a front transmission shaft 33, a pair of front legs 34 and a pair of omnidirectional wheels 35; a support rod is arranged between the symmetrical crawler frames 41, the fixed end of the front electric push rod 31 is mounted on the support rod, the front transmission shaft 33 is rotatably mounted on the crawler frame 41, the telescopic end of the front electric push rod 31 is connected to the front transmission shaft 33 through the front crank 32, a front wheel assembly is connected to the front transmission shaft 33 through a front leg 34, and a pair of front wheel assemblies are connected to the front wheel assembly. The front electric push rod 31 is extended and retracted to drive the front crank 32 to rotate, and the front crank 32 drives the front drive shaft 33 to rotate, and finally the front drive shaft 33 drives the front legs 34 and the omnidirectional wheels 35 to rotate relative to the track frame 41, so that when the stair climber rotates from ground operation to ladder operation, it can switch to the ladder operation state, that is, the omnidirectional wheels 35 are rotated to the upper end of the track frame 41, which does not affect the normal operation of the crawler 42, and the crawler 42 is used as the main operating component to operate the stair climbing.

[0030] In one embodiment, the flat-land walking mechanism 3 further includes a rear wheel 53 assembly, which is mounted at the rear end of the front wheel assembly. The rear wheel 53 assembly includes a pair of rear electric push rods 36, a pair of rear cranks 37, a pair of rear transmission shafts 38 and a pair of rear leg components 39; a pair of electric push rods are symmetrically arranged on the inner side of the crawler frame 41, a telescopic end of a rear electric push rod 36 is connected to a rear crank 37, a pair of rear transmission shafts 38 are both rotatably mounted on the crawler frame 41, and any rear wheel 53 assembly is connected to the rear transmission shaft 38 is connected to the rear crank 37, and the rear crank 37 is driven to rotate by the rear electric push rod 36, and then the rear transmission shaft 38 is driven to rotate, and finally the rear leg component 39 is folded up by the rear transmission shaft 38. The swing of the rear support leg 51 can be controlled by adjusting the length of the rear electric push rod 36, thereby realizing the folding and lowering action of the rear wheel 53, so that when switching from the horizontal state to the ladder climbing state, the rear wheel 53 assembly can also be folded to the upper part of the crawler frame 41, so as to avoid the rear wheel 53 assembly affecting the climbing of stairs.

[0031] In one embodiment, the rear leg component 39 includes a bent rear leg 51, a mudguard 52, a rear wheel 53, a rear drive motor 54 and a brake handle 55; the rear leg 51 is fixedly connected to the rear transmission shaft 38, the rear drive motor 54 is installed at the end of the rear leg 51, and the output end of the rear drive motor 54 is connected to the rear wheel 53, and the power output by the rear drive motor 54 drives the entire stair climber to move horizontally, and the setting of the universal wheel makes the movement direction of the entire stair climber more choices when running on flat ground; the mudguard 52 is arranged at the middle and upper part of the rear drive motor 54 and the rear wheel 53, and the mudguard 52 is arranged at the middle and upper part of the rear drive motor 54 and the rear wheel 53, which can prevent the influence of mud, water or other debris on the motor and the wheel to a certain extent, thereby improving their service life and overall stability; the brake handle 55 passes through the mudguard 52 and is connected to the rear drive motor 54, and through the brake handle 55, the user can quickly control the start and stop of the motor, which is very useful for maintenance, adjustment or emergency braking.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stair climbing machine, characterized in that: The utility model comprises a seat part, a walking part and a supporting part; the supporting part is installed at the upper end of the walking part, the seat part is detachably connected to the walking part through the supporting part, the walking part comprises a ground walking mechanism and a ladder mechanism, the ladder mechanism is arranged to be inclined from bottom to top at an angle with the ground walking mechanism, the ground walking mechanism is used for ground walking, and in a climbing state, the ground walking mechanism moves to the upper part of the ladder mechanism, and is used for the ladder mechanism to climb stairs; The ladder climbing mechanism includes a symmetrically arranged crawler frame, a pair of crawlers, a driving wheel, a crawler motor and a chain transmission system; the pair of crawlers are respectively installed on the crawler frames, the crawler motor is arranged between the symmetrical crawler frames, the driving wheel is installed on one side of the crawler frame and is located on the same side as the crawler motor, the crawler is rotatably connected to the driving wheel, and the output shaft of the crawler motor is connected to the driving wheel through the chain transmission system for driving the crawler to rotate.

2. A stair climbing machine according to claim 1, characterized in that: The bottom surface of the crawler frame is also provided with a cover for protecting the crawler and other parts installed on the crawler frame.

3. A stair climbing machine according to claim 1, characterized in that: The ladder climbing mechanism also includes a driven wheel and a tensioning mechanism; the driven wheel is installed on the side of the track frame away from the driving wheel, and the tensioning mechanism is clamped and installed on the same side of the driven wheel for adjusting the distance between the driven wheel and the driving wheel, thereby adjusting the tension of the track.

4. A stair climbing machine according to claim 3, characterized in that: The level ground walking mechanism includes a front wheel assembly, which is installed at the front end of the track frame; the front wheel assembly includes a front electric push rod, a front crank, a front transmission shaft, a pair of front legs and a pair of omnidirectional wheels; a support rod is symmetrically arranged between the track frames, the fixed end of the front electric push rod is installed on the support rod, the front transmission shaft is rotatably installed on the track frame, the telescopic end of the front electric push rod is connected to the front transmission shaft through the front crank, one of the front wheel assemblies is connected to the front transmission shaft through one of the front legs, a pair of the front wheel assemblies are symmetrically arranged at both ends of the front transmission shaft, and the track frame is located between the pair of the front transmission shafts.

5. A stair climbing machine according to claim 4, characterized in that: The level ground walking mechanism also includes a rear wheel assembly, which is installed at the rear end of the front wheel assembly. The rear wheel assembly includes a pair of rear electric push rods, a pair of rear cranks, a pair of rear transmission shafts and a pair of rear leg parts; the pair of electric push rods are symmetrically arranged on the inner side of the track frame, the telescopic end of one rear electric push rod is connected to one rear crank, and a pair of rear transmission shafts are both rotatably installed on the track frame, and any of the rear wheel assemblies is connected to the rear crank via the rear transmission shaft.

6. A stair climbing machine according to claim 5, characterized in that: The rear leg component includes a bent rear leg, a mudguard, a rear wheel, a rear drive motor and a brake handle; the rear leg is fixedly connected to the rear transmission shaft, the rear drive motor is installed at the end of the rear leg, and the output end of the rear drive motor is connected to the rear wheel; the mudguard is arranged at the upper and middle part of the rear drive motor and the rear wheel, and the brake handle passes through the mudguard and is connected to the rear drive motor.

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