Stair climbing machine

Abstract

The utility model relates to a stair climbing machine which comprises a carrying plate and a back plate, the carrying plate is hinged to the back plate, a first roller assembly is rotatably arranged at the bottom end of the carrying plate, a crawler assembly is arranged on the bottom face of the back plate, the crawler assembly is rotatably connected with the back plate, a second roller assembly is arranged at the bottom end of the back plate, and a driving assembly is arranged between the carrying plate and the back plate. One end of the driving assembly is adjustably connected with the back plate, the other end of the driving assembly is slidably connected with the second roller assembly and the track assembly, the driving assembly has two states, and when the driving assembly is in the flat ground moving state, the driving end of the driving assembly is connected with the second roller assembly; in the stair climbing state, the driving end of the driving assembly is connected with the crawler belt assembly, and the driving assembly is used for driving the crawler belt assembly to rotate to drive the back plate to move. The stair climbing machine is simple in structure, high in flat ground moving efficiency and high in stair climbing stability.

Description

Technical Field

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

[0002] A stair climber is a device that assists in climbing stairs. It is often used to assist in carrying large items or goods. It is widely used in various fields such as logistics, water delivery, and moving. Existing stair climbers usually use crawlers to climb stairs. When walking on flat ground, they move through crawlers, resulting in low efficiency in flat ground movement. Alternatively, the stair climber is moved by manually pushing and pulling the stair climber, which not only greatly reduces the movement efficiency, but also increases manpower consumption. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stair climbing machine, which not only improves the efficiency of flat ground movement, but also greatly reduces the manpower consumption.

[0004] The utility model adopts the following technical solution to solve the technical problem: a stair climbing machine, comprising a loading plate and a back plate, the loading plate and the back plate are hinged, a first roller assembly is rotatably arranged at the bottom end of the loading plate, a track assembly is rotatably arranged on the bottom surface of the back plate, the track assembly is rotatably connected to the back plate, a second roller assembly is arranged at the bottom end of the back plate, a driving assembly is arranged between the loading plate and the back plate, one end of the driving assembly is adjustably connected to the back plate, and the other end of the driving assembly is slidably connected to the second roller assembly and the track assembly respectively.

[0005] The driving assembly has two states. When in a flat ground moving state, the driving end of the driving assembly is connected to the second roller assembly, and the driving assembly is used to drive the second roller assembly to drive the loading plate to move. When in a stair climbing state, the driving end of the driving assembly is connected to the track assembly, and the driving assembly is used to drive the track assembly to rotate and drive the back plate to move.

[0006] The stair climbing machine is provided with a first roller assembly rotatably arranged at the bottom end of the loading plate, and a second roller assembly is arranged at the bottom end of the back plate. The first roller assembly and the second roller assembly cooperate to support and move the loading plate and the back plate, thereby improving the moving efficiency when moving on the ground and reducing the manpower consumption. The crawler assembly is also arranged on the back plate, thereby improving the stability of climbing. The stair climbing machine has a simple structure, high efficiency of moving on the ground, and strong stability of climbing.

[0007] In one embodiment, the driving assembly of the stair climbing machine includes a motor and a first gear, the driving end of the motor is connected to the first gear, the side end surface of the back plate is provided with an adjustment hole, the bottom surface of the back plate is provided with a fixing plate, the fixing plate is provided with a limiting hole, the fixing plate is located below the adjustment hole, the adjustment hole includes a first positioning hole, a second positioning hole and a third positioning hole that are interconnected, one end of the motor is connected to the back plate through an L-shaped connecting frame, one end of the L-shaped connecting frame is provided with an adjustment handle, the adjustment handle extends into the adjustment hole of the back plate and slides and positions with the first positioning hole, the second positioning hole and the third positioning hole respectively, the other end of the L-shaped connecting frame passes through the limiting hole of the fixing plate and is hinged to the motor, the corner end of the L-shaped connecting frame is hinged to the back plate, the other end of the motor is provided with a first sliding part and a second sliding part, the first sliding part is slidably connected to the second roller assembly, and the second sliding part is slidably connected to the crawler assembly.

[0008] In one embodiment, the second roller assembly of the stair climber includes two rotating wheels, a connecting rod is provided between the two rotating wheels, a second gear is fixedly provided on the connecting rod, and the first sliding part is sleeved on the connecting rod. When in a flat moving state, the adjustment handle is turned to position and cooperate with the first positioning hole, and the motor drives the first gear and the first sliding part to move, so that the first gear engages with the second gear. The motor is used to drive the first gear to drive the second gear to rotate, and the second gear drives the connecting rod and the two rotating wheels to rotate.

[0009] In one of the embodiments, the crawler assembly of the stair climbing machine includes a frame, two driving wheels, two driven wheels and belts wound around the driving wheels and the driven wheels. The two driving wheels are rotatably connected to one end of the frame close to the second roller assembly through a rotating shaft, and a third gear is fixedly provided on the rotating shaft. The two driven wheels are rotatably installed on the other end of the frame respectively, and the second sliding part is sleeved on the rotating shaft. When in the climbing state, the adjustment handle is turned to position and cooperate with the third positioning hole, and the motor drives the first gear and the second sliding part to move, so that the first gear is meshed with the third gear. The motor is used to drive the first gear to drive the third gear to rotate, and the third gear drives the rotating shaft and the two driving wheels to rotate.

[0010] In one embodiment, the frame of the stair climbing machine is provided with slide grooves in a vertically symmetrical manner, a rotating frame is provided on the back plate, one end of the rotating frame is hinged to the back plate, and the other end of the rotating frame is slidably matched with the slide groove of the frame, and a gas spring is provided between the rotating frame and the back plate.

[0011] In one of the embodiments, a power supply device for supplying power to the motor is provided on the end surface of the back plate of the stair climber close to the track assembly.

[0012] In one of the embodiments, a detachable pull rod and two handles are provided on the top of the back plate of the stair climbing machine.

[0013] In one embodiment, the first roller assembly of the stair climbing machine includes two universal wheels, and the two universal wheels are respectively installed at two ends of the loading plate away from the second roller assembly.

[0014] In one embodiment, a fixing component is provided at the bottom of the back plate of the stair climbing machine, one end of the loading plate close to the back plate extends into the fixing component and is detachably connected to the fixing component, and the loading plate is hinged to the end of the fixing component.

[0015] In one of the embodiments, one end of the loading plate of the stair climbing machine close to the first roller assembly is fixedly connected to the back plate by a buckle.

[0016] The beneficial effects of this application are:

[0017] The present application provides a stair climbing machine, which is provided with a first roller assembly at the bottom end of a loading plate and a second roller assembly at the bottom end of a back plate, and the first roller assembly and the second roller assembly cooperate to support and move the loading plate and the back plate, thereby improving the moving efficiency when moving on the ground and reducing the manpower consumption. The crawler assembly is also provided on the back plate to improve the stability of climbing. The stair climbing machine has a simple structure, high efficiency of moving on the ground, and strong stability of climbing.

[0018] The loading plate and the back plate are hinged, and the back plate and the track assembly are hinged and adjusted, which improves the storage efficiency of the stair climber. After storage, the volume is small and easy to put away.

[0019] Among them, the use of adjustable driving components not only realizes driving in multiple states, but also saves additional configuration costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a first state of the stair climbing machine according to an embodiment of the present application from one viewing angle;

[0021] Figure 2 A schematic diagram of the first state of the stair climbing machine according to an embodiment of the present application from another perspective;

[0022] Figure 3 A schematic diagram of a second state of the stair climbing machine according to an embodiment of the present application;

[0023] Figure 4 A schematic diagram of a drive assembly, an L-shaped connecting frame, a connecting rod and a rotating shaft of a stair climbing machine according to an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the third state of the stair climbing machine according to an embodiment of the present application;

[0025] in:

[0026] 1. Carrying plate; 2. Back plate; 3. First roller assembly; 4. Track assembly; 5. Second roller assembly; 6. Driving assembly; 21. Adjusting hole; 22. L-shaped connecting frame; 23. Rotating frame; 24. Gas spring; 25. Power supply device; 26. Handle; 27. Pull rod; 28. Fixing plate; 281. Limiting hole; 29. ​​Fixing component; 30. Buckle; 211. First positioning hole; 212. Second positioning hole; 213. Third positioning hole; 221. Adjusting handle; 31. Universal wheel; 41. Frame; 42. Driving wheel; 43. Driven wheel; 44. Belt; 45. Rotating shaft; 46. Third gear; 411. Slide; 51. Rotating wheel; 52. Connecting rod; 53. Second gear; 61. Motor; 62. First gear; 63. First sliding part; 64. Second sliding part. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a stair climbing machine, including a loading plate 1 and a back plate 2, the loading plate 1 is hinged to the back plate 2, a first roller assembly 3 is rotatably provided at the bottom end of the loading plate 1, a track assembly 4 is provided on the bottom surface of the back plate 2, the track assembly 4 is rotatably connected to the back plate 2, a second roller assembly 5 is provided at the bottom end of the back plate 2, a driving assembly 6 is provided between the loading plate 1 and the back plate 2, one end of the driving assembly 6 is adjustably connected to the back plate 2, and the other end of the driving assembly 6 is slidably connected to the second roller assembly 5 and the track assembly 4 respectively.

[0029] like Figure 1 and Figure 3 As shown, the driving assembly 6 has two states. When in the flat moving state, the driving end of the driving assembly 6 is connected to the second roller assembly 5, and the driving assembly 6 is used to drive the second roller assembly 5 to drive the loading plate 1 to move. When in the stair climbing state, the driving end of the driving assembly 6 is connected to the track assembly 4, and the driving assembly 6 is used to drive the track assembly 4 to rotate and drive the back plate 2 to move.

[0030] Specifically, the first roller assembly 3 is two universal wheels 31, which are rotatably mounted at the two ends of the bottom of the loading plate 1 away from the back plate 2. The second roller assembly 5 is two rotating wheels 51, which are respectively mounted at the two ends of the bottom of the back plate 2, and the two rotating wheels 51 are fixedly connected by a connecting rod 52. The middle position of the track assembly 4 is adjustably connected to the middle position of the back of the back plate 2 through a rotating frame 23, and the bottom of the track assembly 4 is rotatably connected to the bottom of the base plate through a rotating shaft 45. One end of the driving assembly 6 is adjustably connected to the side end surface of the back plate 2 through an L-shaped connecting frame 22, and the other end of the driving assembly 6 is respectively slidably matched with the connecting rod 52 and the track assembly 4.

[0031] When in the state of moving on flat ground, the L-shaped connecting frame 22 is moved to adjust the position of the driving assembly 6, and the driving assembly 6 moves along the connecting rod 52 and the track assembly 4, so that the first gear 62 of the driving assembly 6 is engaged with the second gear 53 on the connecting rod 52, and the driving assembly 6 drives the first gear 62 to rotate, the first gear 62 drives the second gear 53 to rotate, the second gear 53 drives the connecting rod 52 to rotate, the connecting rod 52 drives the two rotating wheels 51 to rotate, and the two rotating wheels 51 drive the two universal wheels 31 to rotate, so that the loading plate 1 and the back plate 2 drive the goods to move on the flat ground.

[0032] When climbing stairs, the track assembly 4 is pulled open from the back of the back plate 2, the track assembly 4 is attached to the steps of the stairs, and then the L-shaped connecting frame 22 is moved to adjust the position of the drive assembly 6, so that the drive assembly 6 moves along the connecting rod 52 and the track assembly 4, so that the first gear 62 of the drive assembly 6 and the third gear 46 on the track assembly 4 are engaged, the drive assembly 6 drives the first gear 62 to drive the third gear 46 to rotate, and the third gear 46 drives the track assembly 4 to rotate to perform the climbing operation.

[0033] When not in use or in manual push-pull state, the L-shaped connecting frame is moved to adjust the position of the driving assembly 6, so that the driving assembly 6 moves along the connecting rod 52 and the crawler assembly 4, so that the first gear 62 of the driving assembly 6 is disengaged from the second gear 53 of the connecting rod 52 or the third gear 46 of the crawler assembly 4, and the first gear 62 is in a neutral position, and manual push-pull movement operation can be performed. The loading plate 1 and the crawler assembly 4 can also be rotated to contact the back plate 2 for storage. After storage, the stair climbing machine occupies a small area and is easy to put away.

[0034] In the above structure, by setting the first roller assembly 3 at the bottom end of the loading plate 1 and the second roller assembly 5 at the bottom end of the back plate 2, the first roller assembly 3 and the second roller assembly 5 cooperate to support and move the loading plate 1 and the back plate 2, thereby improving the moving efficiency when moving on the ground and reducing the manpower consumption. In addition, by setting the crawler assembly 4 on the back plate 2, the stability of climbing stairs is improved. The loading plate 1 is hinged to the back plate 2, and the back plate 2 is hinged to the crawler assembly 4, which improves the storage efficiency. After storage, the volume is small and easy to put away. The use of an adjustable drive assembly 6 not only realizes the drive in multiple states, but also saves additional configuration costs.

[0035] like Figure 4 As shown, in one embodiment, the driving assembly 6 of the stair climbing machine includes a motor 61 and a first gear 62, the driving end of the motor 61 is connected to the first gear 62, the side end surface of the back plate 2 is provided with an adjustment hole 21, the bottom surface of the back plate 2 is provided with a fixing plate 28, and the fixing plate 28 is provided with a limited position hole 281, the fixing plate 28 is located below the adjustment hole 21, the adjustment hole 21 includes a first positioning hole 211, a second positioning hole 212 and a third positioning hole 213 that are interconnected, one end of the motor 61 is connected to the back plate 2 through an L-shaped connecting frame 22, and the L-shaped connecting frame 22 is connected to the back plate 2 through an L-shaped connecting frame 22. An adjustment handle 221 is provided at one end of the connecting frame 22, and the adjustment handle 221 extends into the adjustment hole 21 of the back plate 2 and slides and positions with the first positioning hole 211, the second positioning hole 212 and the third positioning hole 213 respectively. The other end of the L-shaped connecting frame 22 passes through the limiting hole 281 of the fixing plate 28 and is hinged to the motor 61. The corner end of the L-shaped connecting frame 22 is hinged to the back plate 2. The other end of the motor 61 is provided with a first sliding portion 63 and a second sliding portion 64. The first sliding portion 63 is slidably connected to the second roller assembly 5, and the second sliding portion 64 is slidably connected to the track assembly 4.

[0036] Specifically, one end of the motor 61 is connected to the back plate 2 through the L-shaped connecting frame 22, the adjustment handle 221 of the L-shaped connecting frame 22 extends into the adjustment hole 21 of the back plate 2, and is positioned and matched with the first positioning hole 211, the second positioning hole 212 and the third positioning hole 213, the other end of the L-shaped connecting frame 22 is fixedly connected to the motor 61, and the corner end of the L-shaped connecting frame 22 is hinged to the back of the back plate 2. When the adjustment handle 221 is moved into the first positioning hole 211, the L-shaped connecting frame 22 drives the first sliding part 63 and the second sliding part 64 of the motor 61 to move along the connecting rod 52 of the second roller assembly 5 and the rotating shaft 45 of the crawler assembly 4 respectively, so that the first gear 62 is meshed with the second gear 53, and the motor 61 drives the second roller assembly 5 to rotate. When the adjustment handle 221 is moved into the third positioning hole 213, the first sliding portion 63 and the second sliding portion 64 of the L-shaped connecting frame 22 drive the motor 61 to move along the connecting rod 52 of the second roller assembly 5 and the rotating shaft 45 of the track assembly 4, respectively, so that the first gear 62 is meshed with the third gear 46, and the motor 61 drives the track assembly 4 to rotate. When the adjustment handle 221 is moved into the second positioning hole 212, the first sliding portion 63 and the second sliding portion 64 of the L-shaped connecting frame 22 drive the motor 61 to move along the connecting rod 52 of the second roller assembly 5 and the rotating shaft 45 of the track assembly 4, respectively, so that the first gear 62 is disengaged from the third gear 46 and the second gear 53, and is in a neutral position. Among them, the limiting hole 281 limits the movement of the L-shaped connecting frame 22 and the motor 61.

[0037] In the above structure, by providing an adjustable driving assembly 6, not only driving in multiple states is achieved, but also additional configuration costs are saved.

[0038] like Figure 1 As shown, in one embodiment, the second roller assembly 5 of the stair climbing machine includes two rotating wheels 51, a connecting rod 52 is arranged between the two rotating wheels 51, a second gear 53 is fixedly arranged on the connecting rod 52, and the first sliding portion 63 is sleeved on the connecting rod 52. When in a flat moving state, the adjusting handle 221 is turned to position and cooperate with the first positioning hole 211, and the motor 61 drives the first gear 62 and the first sliding portion 63 to move, so that the first gear 62 is engaged with the second gear 53. The motor 61 is used to drive the first gear 62 to drive the second gear 53 to rotate, and the second gear 53 drives the connecting rod 52 and the two rotating wheels 51 to rotate.

[0039] Specifically, the two rotating wheels 51 are respectively mounted at the two ends of the bottom of the back plate 2, the two ends of the connecting rod 52 are respectively fixedly connected to the rotating wheels 51, and the second gear 53 is fixedly sleeved on the connecting rod 52. When the first gear 62 is meshed with the second gear 53, the first gear 62 rotates to drive the second gear 53 to rotate, the second gear 53 drives the connecting rod 52 to rotate, and the connecting rod 52 drives the two rotating wheels 51 to rotate.

[0040] This arrangement facilitates the cooperation with the motor 61 to drive the loading plate 1 and the back plate 2 to move horizontally, and also plays a supporting role.

[0041] like Figure 3 As shown, in one of the embodiments, the track assembly 4 of the stair climbing machine includes a frame 41, two driving wheels 42, two driven wheels 43 and a belt 44 wound around the driving wheel 42 and the driven wheel 43. The two driving wheels 42 are rotatably connected to one end of the frame 41 close to the second roller assembly 5 through a rotating shaft 45, and a third gear 46 is fixedly provided on the rotating shaft 45. The two driven wheels 43 are rotatably mounted on the other end of the frame 41 respectively, and the second sliding portion 64 is sleeved on the rotating shaft 45. When in the climbing state, the adjusting handle 221 is turned to position and cooperate with the third positioning hole 213, and the motor 61 drives the first gear 62 and the second sliding portion 64 to move, so that the first gear 62 is meshed with the third gear 46. The motor 61 is used to drive the first gear 62 to drive the third gear 46 to rotate, and the third gear 46 drives the rotating shaft 45 and the two driving wheels 42 to rotate.

[0042] Specifically, the two driving wheels 42 are installed at one end of the frame 41 close to the two rotating wheels 51 through the rotating shaft 45, and the two ends of the rotating shaft 45 pass through the driving wheels 42 and are also connected to the bottom of the back plate 2. The third gear 46 is fixedly sleeved on the rotating shaft 45, and the two driven wheels 43 are respectively rotatably installed at the other end of the frame 41, and the belt 44 is wound around the driving wheel 42 and the driven wheel 43. When the first gear 62 is engaged with the third gear 46, the motor 61 drives the first gear 62 to drive the third gear 46 to rotate, the third gear 46 drives the rotating shaft 45 to rotate, the rotating shaft 45 drives the two driving wheels 42 to rotate, and the two rotating wheels 51 respectively drive the belt 44 and the driven wheel 43 to rotate, thereby driving the goods on the loading board 1 and the back plate 2 to climb the stairs.

[0043] This arrangement is convenient for cooperating with the motor 61 to drive the loading plate 1 and the back plate 2 to move the goods up the stairs, which not only has strong stability but also plays a good supporting role.

[0044] like Figure 3 As shown, in one embodiment, a slide groove 411 is vertically symmetrically arranged on the frame 41 of the stair climbing machine, a rotating frame 23 is arranged on the back plate 2, one end of the rotating frame 23 is hinged to the back plate 2, and the other end of the rotating frame 23 is slidably matched with the slide groove 411 of the frame 41, and a gas spring 24 is arranged between the rotating frame 23 and the back plate 2.

[0045] Specifically, the bottom of the track assembly 4 is rotatably connected to the bottom of the back plate 2 via the rotating shaft 45, one end of the rotating frame 23 is hinged to the back plate 2, and the other end of the rotating frame 23 is slidably connected to the slide groove 411 symmetrically arranged on the frame body 41. When the track assembly 4 is opened, the rotating frame 23 moves upward along the slide groove 411 to the top of the slide groove 411, and the gas spring 24 resists the rotating frame 23 to play a supporting role. When the track assembly 4 is closed on the back plate 2, the rotating frame 23 moves downward along the slide groove 411 to the bottom of the slide groove 411.

[0046] The arrangement of the rotating frame 23 facilitates the angular rotation of the track assembly 4. The arrangement of the gas spring 24 facilitates the support of the track assembly 4.

[0047] like Figure 3 As shown, in one embodiment, the back plate 2 of the stair climbing machine is provided with a power supply device 25 for powering the motor 61 at the end surface close to the crawler assembly 4. The power supply device 25 can be a battery assembly or a rechargeable battery assembly. This arrangement is conducive to powering the motor 61.

[0048] like Figure 1 As shown, in one embodiment, a detachable pull rod 27 and two handles 26 are provided at the top of the back plate 2 of the stair climbing machine. The pull rod 27 is detachably connected to the back plate 2 through a bolt assembly. This arrangement facilitates manual holding of the handle 26 or the pull rod 27 for auxiliary pushing and other operations.

[0049] like Figure 1 As shown, in one embodiment, the first roller assembly 3 of the stair climbing machine includes two universal wheels 31, and the two universal wheels 31 are respectively installed at two ends of the carrier plate 1 away from the second roller assembly 5. This arrangement facilitates the adjustment of the moving direction when moving on a flat ground, and also plays a supporting role for the carrier plate 1 and the back plate 2.

[0050] like Figure 5 As shown, in one embodiment, a fixing component 29 is provided at the bottom of the back plate 2 of the stair climbing machine, and one end of the carrier board 1 close to the back plate 2 extends into the fixing component 29 and is detachably connected to the fixing component 29, and the carrier board 1 is hinged to the end of the fixing component 29. When moving on the ground, the carrier board 1 is pulled open around the fixing component 29, and then the fixing component 29 and the carrier board 1 are fixed by a bolt assembly. This arrangement facilitates the fixing of the carrier board 1 after it is unfolded.

[0051] like Figure 5 As shown, in one embodiment, one end of the loading board 1 of the stair climbing machine close to the first roller assembly 3 is fixedly connected to the backboard 2 through a buckle 30. When the loading board 1 is folded up, the buckle 30 is used to fix the folded loading board 1 and the backboard 2.

[0052] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A stair climbing machine, characterized in that: The invention comprises a loading plate (1) and a back plate (2), wherein the loading plate (1) and the back plate (2) are hingedly connected, a first roller assembly (3) is rotatably arranged at the bottom end of the loading plate (1), a track assembly (4) is rotatably arranged on the bottom surface of the back plate (2), the track assembly (4) is rotatably connected to the back plate (2), a second roller assembly (5) is arranged at the bottom end of the back plate (2), a driving assembly (6) is arranged between the loading plate (1) and the back plate (2), one end of the driving assembly (6) is adjustably connected to the back plate (2), and the other end of the driving assembly (6) is slidably connected to the second roller assembly (5) and the track assembly (4), respectively. The driving assembly (6) has two states. When in a flat ground moving state, the driving end of the driving assembly (6) is connected to the second roller assembly (5), and the driving assembly (6) is used to drive the second roller assembly (5) to drive the loading plate (1) to move. When in a stair climbing state, the driving end of the driving assembly (6) is connected to the crawler assembly (4), and the driving assembly (6) is used to drive the crawler assembly (4) to rotate and drive the back plate (2) to move.

2. The stair climbing machine according to claim 1, characterized in that: The driving assembly (6) comprises a motor (61) and a first gear (62), the driving end of the motor (61) is connected to the first gear (62), the side end surface of the back plate (2) is provided with an adjustment hole (21), the bottom surface of the back plate (2) is provided with a fixing plate (28), a limiting hole (281) is provided on the fixing plate (28), the fixing plate (28) is located below the adjustment hole (21), the adjustment hole (21) comprises a first positioning hole (211), a second positioning hole (212) and a third positioning hole (213) which are interconnected, one end of the motor (61) is connected to the back plate (2) via an L-shaped connecting frame (22), one end of the L-shaped connecting frame (22) is provided with a An adjusting handle (221) is provided, and the adjusting handle (221) extends into the adjusting hole (21) of the back plate (2) and is respectively slidably positioned with the first positioning hole (211), the second positioning hole (212) and the third positioning hole (213). The other end of the L-shaped connecting frame (22) passes through the limiting hole (281) of the fixing plate (28) and is hinged to the motor (61). The corner end of the L-shaped connecting frame (22) is hinged to the back plate (2). The other end of the motor (61) is provided with a first sliding part (63) and a second sliding part (64). The first sliding part (63) is slidably connected to the second roller assembly (5), and the second sliding part (64) is slidably connected to the track assembly (4).

3. The stair climbing machine according to claim 2, characterized in that: The second roller assembly (5) comprises two rotating wheels (51), a connecting rod (52) is arranged between the two rotating wheels (51), a second gear (53) is fixedly arranged on the connecting rod (52), and the first sliding part (63) is sleeved on the connecting rod (52). When in a horizontal moving state, the adjusting handle (221) is moved to be positioned and matched with the first positioning hole (211), and the motor (61) drives the first gear (62) and the first sliding part (63) to move, so that the first gear (62) and the second gear (53) are meshed, and the motor (61) is used to drive the first gear (62) to drive the second gear (53) to rotate, and the second gear (53) drives the connecting rod (52) and the two rotating wheels (51) to rotate.

4. The stair climbing machine according to claim 2, characterized in that: The crawler assembly (4) comprises a frame (41), two driving wheels (42), two driven wheels (43) and a belt (44) wound around the driving wheels (42) and the driven wheels (43). The two driving wheels (42) are rotatably connected to one end of the frame (41) close to the second roller assembly (5) via a rotating shaft (45). A third gear (46) is fixedly arranged on the rotating shaft (45). The two driven wheels (43) are rotatably mounted on the other end of the frame (41). The second sliding The part (64) is sleeved on the rotating shaft (45). When in the state of climbing stairs, the adjusting handle (221) is turned to be positioned and matched with the third positioning hole (213), and the motor (61) drives the first gear (62) and the second sliding part (64) to move, so that the first gear (62) and the third gear (46) are meshed. The motor (61) is used to drive the first gear (62) to drive the third gear (46) to rotate, and the third gear (46) drives the rotating shaft (45) and the two driving wheels (42) to rotate.

5. The stair climbing machine according to claim 4, characterized in that: The frame body (41) is vertically symmetrically provided with a slide groove (411), the back plate (2) is provided with a rotating frame (23), one end of the rotating frame (23) is hinged to the back plate (2), the other end of the rotating frame (23) is slidably matched with the slide groove (411) of the frame body (41), and a gas spring (24) is provided between the rotating frame (23) and the back plate (2).

6. The stair climbing machine according to claim 1, characterized in that: A power supply device (25) for supplying power to the motor (61) is provided on the end surface of the back plate (2) close to the crawler assembly (4).

7. The stair climbing machine according to claim 1, characterized in that: A detachable pull rod (27) and two handles (26) are provided at the top end of the back plate (2).

8. The stair climbing machine according to claim 1, characterized in that: The first roller assembly (3) comprises two universal wheels (31), and the two universal wheels (31) are respectively mounted at two ends of the object carrier (1) away from the second roller assembly (5).

9. The stair climbing machine according to claim 1, characterized in that: A fixing component (29) is provided at the bottom of the back plate (2); one end of the loading plate (1) close to the back plate (2) extends into the fixing component (29) and is detachably connected to the fixing component (29); the loading plate (1) is hinged to the end of the fixing component (29).

10. The stair climbing machine according to claim 1, characterized in that: One end of the object carrier plate (1) close to the first roller assembly (3) is fixedly connected to the back plate (2) via a buckle (30).

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