A foldable stair climbing machine

Abstract

The utility model discloses a foldable cargo-carrying stair climbing machine, relates to the technical field of cargo-carrying stair climbing machines, and solves the technical problem that the fuselage size of the existing foldable cargo-carrying stair climbing machines is still large after folding; it includes a handrail assembly, a main support assembly, a crawler assembly, a cargo-carrying plate and a walking wheel, the main support assembly includes an upper beam and two outer tubes, the upper beam is welded between the outer tube walls of the two outer tubes near the top ends, the cargo-carrying plate is rotatably installed between the outer tube walls of the two outer tubes near the bottom ends, the handrail assembly is slidably plugged with the outer tubes; the crawler assembly includes two parallel crawlers, sprockets are meshed at both ends of the crawlers, and side plates for sprocket installation are provided on both sides of the crawlers, and the side plates and the outer tubes are respectively connected to the shaft body through connecting pieces. The utility model not only facilitates the unfolding or folding of the cargo-carrying stair climbing machine, reduces the folding volume, and facilitates its storage and carrying, but also adopts a longer crawler design, which is convenient for the cargo-carrying stair climbing machine to work smoothly.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair climbing machines for carrying objects, in particular to a foldable stair climbing machine for carrying objects. Background Art

[0002] The cargo stair climbing machine is a new type of cargo (person) climbing tool. It uses its own motion actuator to achieve the action of going up and down stairs, thereby completing the purpose of going up and down stairs. This equipment is widely used in industries such as logistics, water delivery, moving, furniture and home appliances, as well as factories, offices, residential buildings, outdoor steps and other places.

[0003] In order to reduce the size of the stair climbing machine, the current cargo stair climbing machine will use a folding mechanism to reduce the size of the stair climbing machine to a certain extent. However, in actual operation, due to the limitations of various components and structures, it is difficult to achieve a significant size reduction. Therefore, even after folding, the volume of the stair climbing machine may still be large, which is not convenient to carry and store. In addition, in order to make the stair climbing machine more compact after folding, a shorter crawler is usually used. However, the shorter crawler makes the cargo stair climbing machine less stable when working. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a foldable cargo-carrying stair climbing machine, which solves the problem that the existing foldable cargo-carrying stair climbing machines still have a large body size after folding.

[0005] To achieve the above-mentioned purpose, according to the embodiment of the first aspect of the utility model, a foldable cargo-carrying stair climbing machine is provided, comprising a handrail assembly, a main support assembly, a crawler assembly, a cargo-carrying plate and walking wheels, wherein the main support assembly comprises an upper beam and two outer tubes, the upper beam is welded between the outer tube walls of the two outer tubes near the top ends, the cargo-carrying plate is rotatably installed between the outer tube walls of the two outer tubes near the bottom ends, and the handrail assembly is slidably plugged into the outer tubes;

[0006] The crawler assembly comprises two crawlers arranged in parallel, sprockets are meshed at both ends of the crawler, and side plates for mounting the sprockets are arranged on both sides of the crawler, the side plates and the outer tube are respectively connected to an axle body through connecting pieces, and the running wheels are mounted on the ends of the axle body;

[0007] A sliding rod is arranged between the two crawlers, a sliding groove for the sliding rod to slide is opened on the side wall of the side plate, a connecting rod is rotatably sleeved on the sliding rod, the other end of the connecting rod is hinged to the outer tube, a baffle is installed between the two outer tubes, a gas spring is symmetrically hinged on the baffle, and the other end of the gas spring is hinged to the connecting rod.

[0008] As a further technical solution of the utility model, the armrest assembly includes a U-shaped handle and two inner tubes, the two inner tubes are slidably inserted in two outer tubes, and the two inner tubes are connected to both ends of the U-shaped handle, and the upper beam is equipped with a clamping mechanism for controlling the extension and retraction of the armrest assembly.

[0009] As a further technical solution of the present invention, the track assembly also includes a driving member, which includes a rotating rod located between the two tracks, and the end of the rotating rod passes through the side plate and is connected to the corresponding sprocket, wherein a gear box for driving the rotating rod is installed at the side wall of one of the side plates, and a motor is installed on the outside of the gear box.

[0010] As a further technical solution of the utility model, the clamping mechanism includes a rotating shaft rotatably installed in the upper beam, a dividing pin located in the upper beam is installed on the outer tube wall of the outer tube, a steel wire rope for pulling the dividing pin is installed on the rotating shaft, and a positioning hole for inserting the dividing pin is opened on the inner tube.

[0011] As a further technical solution of the utility model, one end of the rotating shaft is coaxially connected with a plum blossom handle, and the plum blossom handle is arranged on the outer side of the upper beam.

[0012] As a further technical solution of the utility model, a cross bar is symmetrically arranged between the two crawlers, the cross bar penetrates the side plates, and the cross bar is fixedly connected to the side plates.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, stair climbing is facilitated by the crawler track assembly. The side panel is pulled to deflect along the axis and away from the main bracket assembly. The slide bar is conveniently slid along the slide groove by the hinged connecting rod. Under the action of the gas spring, the slide bar can be automatically moved to the top of the slide groove to realize the unfolding of the crawler track assembly. Similarly, the crawler track assembly can be folded by pulling the side panel close to the main bracket assembly, so that the cargo climbing machine can be unfolded or folded as needed.

[0015] 2. In the utility model, the clamping mechanism of the upper beam facilitates the control of the handrail assembly to slide and retract along the outer tube of the main bracket assembly, so that the handrail assembly can be quickly folded when the cargo stair climbing machine is not in use, which is beneficial to reducing the folded volume of the cargo stair climbing machine and facilitating storage and carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a foldable cargo-carrying stair climbing machine of the utility model from a first-person perspective;

[0017] Figure 2 This is a stereoscopic diagram of the foldable cargo-carrying stair climbing machine of the utility model from a second viewing angle;

[0018] Figure 3 It is a three-dimensional diagram of the connection part between the handrail assembly and the outer tube in a foldable cargo-carrying stair climbing machine of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of a foldable cargo-carrying stair climbing machine viewed from above.

[0020] In the figure: 1. handrail assembly; 101. U-shaped handle; 102. inner tube; 2. main bracket assembly; 201. upper beam; 202. outer tube; 3. track assembly; 301. track; 302. sprocket; 303. side plate; 4. loading board; 5. walking wheel; 6. shaft; 7. slide bar; 8. slide groove; 9. connecting rod; 10. baffle; 11. gas spring; 12. rotating rod; 13. gear box; 14. motor; 15. rotating shaft; 16. indexing pin; 17. wire rope; 18. plum blossom handle; 19. cross bar. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-4 As shown, a foldable cargo stair climbing machine includes a handrail assembly 1, a main support assembly 2, a crawler assembly 3, a cargo plate 4 and walking wheels 5. The main support assembly 2 includes an upper beam 201 and two outer tubes 202. The upper beam 201 is welded between the outer tube walls of the two outer tubes 202 near the top ends. The cargo plate 4 is rotatably installed between the outer tube walls of the two outer tubes 202 near the bottom ends to facilitate the folding of the cargo plate 4. The handrail assembly 1 is slidably plugged into the outer tube 202. The handrail assembly 1 includes a U-shaped handle 101 and two inner tubes 102. The two inner tubes 102 are slidably plugged into the two outer tubes 202, and the two inner tubes 102 are connected to both ends of the U-shaped handle 101.

[0023] The upper beam 201 is equipped with a clamping mechanism for controlling the extension and retraction of the handrail assembly 1, and the clamping mechanism includes a rotating shaft 15 rotatably installed in the upper beam 201, and one end of the rotating shaft 15 is coaxially connected with a plum blossom handle 18 to facilitate the control of the rotation of the rotating shaft 15. The plum blossom handle 18 is arranged on the outside of the upper beam 201, and a dividing pin 16 located in the upper beam 201 is installed on the outer tube wall of the outer tube 202. A steel wire rope 17 for pulling the dividing pin 16 is installed on the rotating shaft 15, and a positioning hole for inserting the dividing pin 16 is opened on the inner tube 102. The plum blossom handle 18 is used to drive the rotating shaft 15 to rotate to facilitate pulling the dividing pin 16 connected with the steel wire rope 17, so that the dividing pin 16 is separated from the positioning hole, and the handrail assembly 1 can be pushed and pulled up and down to achieve extension and folding.

[0024] The track assembly 3 includes two parallel tracks 301. In this embodiment, the length of the track 301 is 1.5m. Taking a step with a pedal height of 210mm and a pedal width of 280mm as an example, when the cargo climbing machine is climbing up and down the stairs, the track 301 can always be in contact with the two steps of the stairs. When in use, it only needs to continuously provide downward pressure to climb the stairs stably. Sprockets 302 are meshed at both ends of the track 301, and side plates 303 for installing the sprockets 302 are provided on both sides of the track 301. The side plates 303 and the outer tube 202 are respectively connected to the shaft body 6 through connecting plates, and the walking wheels 5 are installed at the ends of the shaft body 6. A cross bar 19 is symmetrically arranged between the two tracks 301. The cross bar 19 is arranged through the side plates 303, and the cross bar 19 is fixedly connected to the side plates 303 to improve the stability of the overall structure.

[0025] A slide bar 7 is arranged between the two tracks 301, and a slide groove 8 for the slide bar 7 to slide is opened on the side wall of the side plate 303. A connecting rod 9 is rotatably sleeved on the slide bar 7, and the other end of the connecting rod 9 is hinged to the outer tube 202. A baffle 10 is installed between the two outer tubes 202, and a gas spring 11 is symmetrically hinged on the baffle 10, and the other end of the gas spring 11 is hinged to the connecting rod 9. The side plate 303 is pulled to deflect along the shaft 6, and the hinged connecting rod 9 and gas spring 11 are cooperated to facilitate the slide bar 7 to slide adaptively along the slide groove 8, so that the cargo climbing machine can be quickly unfolded or folded as needed.

[0026] The track assembly 3 also includes a driving member, which includes a rotating rod 12 located between the two tracks 301. The end of the rotating rod 12 passes through the side plate 303 and is connected to the corresponding sprocket 302. A gear box 13 for driving the rotating rod 12 is installed on the side wall of one of the side plates 303, and a motor 14 is installed on the outer side of the gear box 13. In this embodiment, the gear box 13 and the motor 14 are covered by the baffle 10, which is convenient for transporting objects without causing collisions to them. The motor 14 and the gear box 13 are used to drive the rotating rod 12 to rotate, thereby rotating the sprocket 302 to realize the operation of the track 301. In this embodiment, a power supply for power supply (not marked in the figure) is installed on the baffle 10, and a switch assembly is installed on the U-shaped handle 101 to conveniently control the start and stop of the motor 14.

[0027] The working principle of the utility model is as follows: the starting motor 14 cooperates with the transmission of the gear box 13 to make the rotating rod 12 drive the sprocket 302 to rotate, so that the crawler 301 can operate to realize step climbing. When the cargo climbing machine needs to be folded and stored, the plum blossom handle 18 is turned to rotate the rotating shaft 15 in the upper beam 201, thereby pulling the wire rope 17 to disengage the indexing pin 16 from the positioning hole on the inner tube 102, and then the U-shaped handle 101 can be pressed down to make the inner tube 102 slide and shrink into the outer tube 202 of the main bracket assembly 2 to complete the folding of the handrail, and then the side panel 303 is pushed to deflect it along the shaft body 6 and approach the main bracket assembly 2, and the hinged connecting rod 9 can be used to make the sliding rod 7 slide along the sliding groove 8, and the gas spring 11 can be contracted to complete the folding of the crawler assembly 3, and finally the cargo board 4 is lifted and deflected 90° to complete the folding of the cargo board 4.

[0028] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A foldable stair climbing machine, characterized in that: The utility model comprises an armrest assembly (1), a main support assembly (2), a crawler assembly (3), a loading plate (4) and a walking wheel (5), wherein the main support assembly (2) comprises an upper beam (201) and two outer tubes (202), the upper beam (201) is welded between the outer tube walls of the two outer tubes (202) near the top ends, the loading plate (4) is rotatably mounted between the outer tube walls of the two outer tubes (202) near the bottom ends, and the armrest assembly (1) is slidably plugged into the outer tubes (202); The crawler assembly (3) comprises two crawlers (301) arranged in parallel, sprockets (302) are meshedly arranged at both ends of the crawler (301), and side plates (303) for mounting the sprockets (302) are arranged on both sides of the crawler (301), the side plates (303) and the outer tube (202) are respectively connected to an axle (6) via connecting plates, and the running wheel (5) is mounted on the end of the axle (6); A sliding rod (7) is arranged between the two crawlers (301), a sliding groove (8) for the sliding rod (7) to slide is provided on the side wall of the side plate (303), a connecting rod (9) is rotatably sleeved on the sliding rod (7), the other end of the connecting rod (9) is hinged to the outer tube (202), a baffle (10) is installed between the two outer tubes (202), a gas spring (11) is symmetrically hinged to the baffle (10), and the other end of the gas spring (11) is hinged to the connecting rod (9).

2. A foldable stair climbing machine for carrying objects according to claim 1, characterized in that: The handrail assembly (1) comprises a U-shaped handle (101) and two inner tubes (102), the two inner tubes (102) being slidably inserted into two outer tubes (202), and the two inner tubes (102) being connected to two ends of the U-shaped handle (101), and the upper beam (201) being provided with a clamping mechanism for controlling the extension and retraction of the handrail assembly (1).

3. The foldable stair climbing machine for carrying objects according to claim 1, characterized in that: The crawler track assembly (3) further comprises a driving member, the driving member comprising a rotating rod (12) located between the two crawlers (301), the end of the rotating rod (12) passing through the side plate (303) and connected to the corresponding sprocket (302), a gear box (13) for driving the rotating rod (12) being installed at a side wall of one of the side plates (303), and a motor (14) being installed on the outer side of the gear box (13).

4. The foldable stair climbing machine for carrying objects according to claim 2, characterized in that: The clamping mechanism comprises a rotating shaft (15) rotatably mounted in the upper beam (201); an indexing pin (16) located in the upper beam (201) is mounted on the outer tube wall of the outer tube (202); a steel wire rope (17) for pulling the indexing pin (16) is mounted on the rotating shaft (15); and a positioning hole for inserting the indexing pin (16) is provided on the inner tube (102).

5. The foldable stair climbing machine for carrying objects according to claim 4, characterized in that: One end of the rotating shaft (15) is coaxially connected to a plum blossom handle (18), and the plum blossom handle (18) is arranged outside the upper beam (201).

6. The foldable stair climbing machine for carrying objects according to claim 1, characterized in that: A cross bar (19) is symmetrically arranged between the two crawlers (301), the cross bar (19) penetrates the side plate (303), and the cross bar (19) is fixedly connected to the side plate (303).

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