Step climbing ladder

Abstract

The utility model relates to the technical field of climbing equipment, in particular to a step climbing ladder which comprises two first supporting frames arranged in parallel, first moving wheels are installed at the positions, close to the two sides, of the outer walls of the bottoms of the two first supporting frames, and first connecting frames are installed at the positions, close to the two ends, of the outer walls of the tops of the two first supporting frames. The first supporting frame and the first connecting frame form a rectangle, first clamping bases are installed on the two sides of the outer wall of the top of the first supporting frame located at the rear end, first vertical rods are vertically inserted into the two first clamping bases, and first connecting bases are fixed to the positions, close to the top of the outer wall of the side of the first supporting frame at the front end, of the two first vertical rods; the device does not occupy space and is convenient to carry, when the device needs to be used for climbing, the folded first handrail, the first treading mechanism and the first vertical rod are unfolded, the bottom of the first vertical rod is inserted into the two first clamping bases respectively, and then a first pedal of the first treading mechanism is kept horizontal, so that a worker can conveniently tread on the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of climbing equipment, in particular to a step ladder. Background Art

[0002] When carrying out construction or other work, some work needs to be performed after standing at a certain height, so an auxiliary device is needed to provide support for the user, and thus a step ladder is needed to facilitate the user to stand and work.

[0003] However, the existing step ladder occupies a large area and is difficult to store and carry, which brings inconvenience to the staff and reduces the work efficiency of the staff.

[0004] Therefore, those skilled in the art have proposed step ladders to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a step ladder to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The step ladder comprises two support frames 1 arranged in parallel, and movable wheels 1 are installed on the bottom outer walls of the two support frames 1 near the two sides, and connecting frames 1 are installed on the top outer walls of the two support frames 1 near the two ends, and the support frames 1 and the connecting frames 1 form a rectangle, and a holder 1 is installed on both sides of the top outer wall of the support frame 1 located at the rear end, and a vertical rod 1 is vertically inserted into the inside of the two holders 1, and a connecting seat 1 is fixed at the top of the outer wall of one side of the two vertical rods 1 near the front support frame 1, and hinge seats are arranged on both sides of the top outer wall of the support frame 1 located at the front end, and the two hinge seats One end of each of the arms is fixed with an armrest 1, and a connecting seat 2 is fixed to a position on the outer wall of one side of the two armrests near the connecting seat 1, and the connecting seat 2 is rotatably inserted into the circumferential inner wall of the connecting seat 1, and a limiting plate 1 is horizontally fixed to a position near the top of the outer wall of one side of the two vertical rods away from the front end support frame 1, and a stepping mechanism 1 is provided on the inner wall on the side opposite to the two armrests 1, and one end of the stepping mechanism 1 is attached to the surface of the limiting plate 1, and the ends of the two armrests 1 close to the limiting plate 1 are plugged with the same extension mechanism, and the two ends of the other side of the extension mechanism are respectively installed on one end of the two connecting frames 1 close to the rear end support frame 1.

[0008] Preferably, the pedal mechanism comprises a plurality of cross bars, which are equidistantly distributed and rotatably plugged into the outer wall of one side of two handrails, a pedal is sleeved on the outside of the cross bar, an insertion rod is inserted into the end of the pedal away from the cross bar, an auxiliary plate is sleeved on both ends of the insertion rod, a buckle plate is fixed to one end of the pedal located at the top, one end of the buckle plate is horizontally attached to the surface of a limiting plate, one end of the buckle plate is buckled with one end of the limiting plate, and one end of the two auxiliary plates is hinged to the positions on both sides of the bottom outer wall of the top pedal close to the limiting plate.

[0009] Preferably, the extension mechanism comprises two connecting frames, one end of the two connecting frames is fixed with a clamping strip 1, and the two clamping strips 1 are respectively clamped with one end of the two connecting frames, and a support frame 2 is installed at a position where the outer wall of the bottom of the two connecting frames is away from the support frame 1. Moving wheels 2 are installed on both sides of the outer wall of the bottom of the two supporting frames. A clamping seat 2 is fixed on both sides of the outer wall of the top of the two supporting frames, and a vertical rod 2 is vertically inserted into the interior of the two clamping seats 2. A connecting seat 3 is fixed at a position near the top of the outer wall of one side of the two vertical rods 2. A connecting seat 4 is rotatably inserted on the circumferential inner wall of the two connecting seats 3, and an armrest 2 is installed at one end of the two connecting seats 4. A clamping strip 2 is fixed at one end of the two armrests 2. The two clamping strips 2 are respectively plugged into the inner wall of one side of the two armrests 1, and a limiting plate 2 is horizontally installed at a position near the top of the outer wall of one side of the two vertical rods 2, and a stepping mechanism 2 is arranged on the inner wall on the opposite side of the two armrests 2, and one end of the stepping mechanism 2 is attached to the surface of the limiting plate 2.

[0010] Preferably, the pedaling mechanism 2 includes a plurality of cross bars 2, and the plurality of cross bars 2 are equidistantly inserted on the outer walls of the two handrails 2, and pedals 2 are sleeved on the outer walls of the cross bars 2, and an insertion rod 2 is inserted at one end of the pedal 2 away from the cross bar 2, and auxiliary plates 2 are installed on the outer walls on both sides of the insertion rod 2, and one end of the two auxiliary plates 2 is hinged at the two ends of the bottom outer wall of the top pedal 2 near the position of the limiting plate 2, and a buckle plate 2 is fixedly installed on one end of the pedal 2 located at the top, and one end of the buckle plate 2 is horizontally attached to the surface of the limiting plate 2, and one end of the buckle plate 2 is buckled with one end of the limiting plate 2.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model is provided with an articulated seat, an armrest, a pedal mechanism, a vertical rod and a seat. The bottom of the device is supported by a support frame, a connecting frame and a moving wheel. The armrest, the pedal mechanism and the vertical rod are folded together through the articulated seat and stored on the surface of the support frame and the connecting frame, which does not take up space and is convenient to carry. When the device needs to be used to climb, the folded armrest, the pedal mechanism and the vertical rod are unfolded, and the bottom of the vertical rod is respectively inserted into the inside of the two seats, and then the pedal of the pedal mechanism is kept horizontal, so as to facilitate the staff to step on it to climb up.

[0013] (2) The utility model is provided with an extension mechanism, the two ends of which are respectively inserted into the inside of the handrail 1 and the connecting frame 1. The pedal mechanism 2 cooperates with the pedal mechanism 1 to increase the height of the device, thereby facilitating the staff to work at a higher position. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of a local enlarged structure;

[0016] Figure 3 for Figure 1 A schematic diagram of the structure from another angle;

[0017] Figure 4 for Figure 1 Another perspective structural diagram of;

[0018] In the figure: 1. Support frame 1; 2. Moving wheel 1; 3. Connecting frame 1; 4. Auxiliary plate 1; 5. Card seat 1; 6. Vertical rod 1; 7. Connecting frame 2; 8. Moving wheel 2; 9. Support frame 2; 10. Card seat 2; 11. Vertical rod 2; 12. Auxiliary plate 2; 13. Insert rod 2; 14. Connecting seat 3; 15. Connecting seat 4; 16. Cross bar 2; 17. Pedal 2; 18. Handrail 2; 19. Cross bar 1; 20. Pedal 1; 21. Handrail 1; 22. Articulated seat; 23. Connecting seat 1; 24. Connecting seat 2; 25. Buckle plate 1; 26. Limiting plate 1; 27. Buckle plate 2; 28. Limiting plate 2; 29. ​​Card strip 1; 30. Insert rod 1. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figure 1-Figure 4 As shown, the step ladder comprises two parallel supporting frames 1, the bottom outer walls of the two supporting frames 1 are both provided with moving wheels 2 near the two sides, the top outer walls of the two supporting frames 1 are both provided with connecting frames 3 near the two ends, the supporting frames 1 and the connecting frames 3 form a rectangle, the top outer walls of the supporting frames 1 at the rear end are both provided with holders 5, the interiors of the two holders 5 are both vertically plugged with vertical rods 6, the two vertical rods 6 are fixed with connecting seats 23 near the top of the outer walls of one side of the front supporting frames 1, the top outer walls of the supporting frames 1 at the front end are both provided with hinged seats 22, one end of the two hinged seats 22 A handrail 21 is fixed to each of them, and a connecting seat 24 is fixed to a position near the connecting seat 23 on the outer wall of one side of the two handrails 21, and the connecting seat 24 is rotatably inserted into the circumferential inner wall of the connecting seat 23. A limiting plate 26 is horizontally fixed to a position near the top of the outer wall of the side of the two vertical rods 6 away from the front end support frame 1, and a stepping mechanism 1 is provided on the inner wall of the side opposite to the two handrails 21, and one end of the stepping mechanism 1 is attached to the surface of the limiting plate 26. The ends of the two handrails 21 close to the limiting plate 26 are inserted with the same extension mechanism, and the two ends of the other side of the extension mechanism are respectively installed on one end of the two connecting frames 3 close to the rear end support frame 1.

[0021] As can be seen from the above, the handrail 21, the pedal mechanism 1 and the vertical rod 6 are folded together through the hinge seat 22 and stored on the surface of the support frame 1 and the connecting frame 3, which does not take up space and is convenient to carry. When the device needs to be used to climb, the folded handrail 21, the pedal mechanism 1 and the vertical rod 6 are unfolded, and the bottom of the vertical rod 6 is respectively inserted into the inside of the two holders 5, and then the pedal 20 of the pedal mechanism 1 is kept horizontal, so as to facilitate the staff to step on it to climb up.

[0022] Specifically, the pedal mechanism includes a plurality of cross bars 19, which are rotatably plugged into the outer wall of one side of two handrails 21 at equal intervals, and pedals 20 are sleeved on the outside of the cross bars 19, and plug rods 30 are plugged into the ends of the pedals 20 away from the cross bars 19, and auxiliary plates 4 are sleeved on both ends of the plug rods 30, and a buckle plate 25 is fixed to one end of the uppermost pedal 20, and one end of the buckle plate 25 is horizontally attached to the surface of a limit plate 26, and one end of the buckle plate 25 is buckled with one end of the limit plate 26, and one end of the two auxiliary plates 4 is hinged to the positions of the two sides of the bottom outer wall of the uppermost pedal 20 near the limit plate 26.

[0023] As can be seen from the above, after the pedal 1 20 is placed horizontally, it is convenient for the staff to climb up through the pedal 1 20, which is convenient for the subsequent work.

[0024] Specifically, the extension mechanism includes two connecting frames 27, one end of each of the two connecting frames 27 is fixed with a clamping strip 29, and the two clamping strips 29 are respectively clamped at one end of the two connecting frames 3, and a support frame 29 is installed at a position of the bottom outer wall of the two connecting frames 27 away from the support frame 1, and moving wheels 28 are installed on both sides of the bottom outer wall of the support frame 29, and a clamping seat 20 is fixed on both sides of the top outer wall of the support frame 29, and a vertical rod 21 is vertically inserted into the interior of the two clamping seats 20, and a position of the outer wall of one side of the two vertical rods 211 near the top A connecting seat three 14 is fixed to each of them, and a connecting seat four 15 is rotatably inserted on the circumferential inner wall of the two connecting seats three 14, and an armrest two 18 is installed at one end of the two connecting seats four 15. A clamping strip two is fixed at one end of the two armrests two 18, and the two clamping strips two are respectively inserted on the inner wall of one side of the two armrests one 21, and a limiting plate two 28 is horizontally installed on the outer wall of one side of the two vertical rods two 11 near the top, and a pedaling mechanism two is arranged on the inner wall on the opposite side of the two armrests two 18, and one end of the pedaling mechanism two is attached to the surface of the limiting plate two 28.

[0025] As can be seen from the above, by adding a second pedal mechanism through the extension mechanism, which cooperates with the first pedal mechanism, the height of the device is made higher, making it easier for the staff to climb to a higher position.

[0026] Specifically, the pedaling mechanism 2 includes a plurality of cross bars 16, which are equidistantly inserted on the outer walls of the two handrails 18, and a pedal 17 is sleeved on the outer wall of the cross bar 16. An insertion rod 13 is inserted at one end of the pedal 17 away from the cross bar 16, and an auxiliary plate 12 is installed on the outer walls on both sides of the insertion rod 13. One end of the two auxiliary plates 12 is hinged to the two ends of the bottom outer wall of the top pedal 17 near the position of the limit plate 28, and a buckle plate 27 is fixedly installed on one end of the top pedal 17, and one end of the buckle plate 27 is horizontally attached to the surface of the limit plate 28, and one end of the buckle plate 27 is buckled with one end of the limit plate 28.

[0027] As can be seen from the above, by using pedal 2 17 in conjunction with pedal 1 20, the device can reach a higher height, making it convenient for workers to use the device to reach a higher height, thereby facilitating subsequent work.

[0028] Working principle: the handrail 21, the pedal mechanism 1 and the vertical rod 6 are folded together through the hinge seat 22 and stored on the surface of the support frame 1 and the connecting frame 3, which does not take up space and is convenient to carry. When the device needs to be used for climbing, the folded handrail 21, the pedal mechanism 1 and the vertical rod 6 are unfolded, and the bottom of the vertical rod 6 is respectively inserted into the inside of the two holders 5, and then the pedal 20 of the pedal mechanism 1 is kept horizontal, so that it is convenient for the staff to step on it. By adding an extension mechanism, the device can reach a higher height, which is convenient for users to climb to a higher height.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A step ladder, characterized in that: The invention comprises two support frames (1) arranged in parallel, wherein the bottom outer walls of the two support frames (1) are both provided with moving wheels (2) at positions near both sides, and the top outer walls of the two support frames (1) are both provided with connecting frames (3) at positions near both ends, and the support frames (1) and the connecting frames (3) form a rectangle, and the top outer walls of the support frames (1) at the rear end are both provided with a holder (5) at both sides, and the insides of the two holders (5) are both vertically plugged with a vertical rod (6), and the two vertical rods (6) are fixed with a connecting seat (23) at the top of the outer wall of one side of the front support frame (1), and the top outer walls of the support frames (1) at the front end are both provided with hinge seats (22), and one end of the two hinge seats (22) is provided with a hinge seat (22). A handrail (21) is fixed to each of the two handrails (21); a connecting seat (24) is fixed to a position near the connecting seat (23) on the outer wall of one side of the two handrails (21); the connecting seat (24) is rotatably plugged into the circumferential inner wall of the connecting seat (23); a limiting plate (26) is horizontally fixed to a position near the top of the outer wall of one side of the two vertical rods (6) away from the front end support frame (1); a pedaling mechanism (26) is arranged on the inner wall of the opposite side of the two handrails (21); one end of the pedaling mechanism (26) is attached to the surface of the limiting plate (26); one end of the two handrails (21) near the limiting plate (26) is plugged with the same extension mechanism; the two ends of the other side of the extension mechanism are respectively installed on one end of the two connecting frames (3) near the rear end support frame (1).

2. The step ladder according to claim 1, characterized in that: The pedal mechanism comprises a plurality of cross bars (19), the cross bars (19) being rotatably plugged into one side outer wall of two handrails (21) at equal intervals, the outer sides of the cross bars (19) being sleeved with pedals (20), the ends of the pedals (20) away from the cross bars (19) being plugged with plug rods (30), both ends of the plug rods (30) being sleeved with auxiliary plates (4), one end of the uppermost pedal (20) being fixed with a gusset plate (25), one end of the gusset plate (25) being horizontally attached to the surface of a limiting plate (26), one end of the gusset plate (25) being interlocked with one end of the limiting plate (26), one end of the two auxiliary plates (4) being hinged to the positions of the two sides of the bottom outer wall of the uppermost pedal (20) near the limiting plate (26).

3. The step ladder according to claim 1, characterized in that: The extension mechanism comprises two connecting frames (7), one end of each of the two connecting frames (7) is fixed with a clamping strip (29), and the two clamping strips (29) are respectively clamped on one end of the two connecting frames (3), a supporting frame (9) is installed at a position of the bottom outer wall of the two connecting frames (7) away from the supporting frame (1), both sides of the bottom outer wall of the supporting frame (9) are installed with moving wheels (8), both sides of the top outer wall of the supporting frame (9) are fixed with a clamping seat (10), the interior of the two clamping seats (10) is vertically plugged with a vertical rod (11), and one side outer wall of the two vertical rods (11) is close to the top A connecting seat three (14) is fixed at the position of each part, and a connecting seat four (15) is rotatably inserted on the circumferential inner wall of the two connecting seats three (14), and one end of the two connecting seats four (15) is installed with an armrest two (18), and one end of the two armrests two (18) is fixed with a clamping strip two, and the two clamping strips two are respectively inserted on the inner wall of one side of the two armrests one (21), and a limiting plate two (28) is horizontally installed on the outer wall of one side of the two vertical rods two (11) near the top, and a pedaling mechanism two is arranged on the inner wall of the side opposite to the two armrests two (18), and one end of the pedaling mechanism two is attached to the surface of the limiting plate two (28).

4. The step ladder according to claim 3, characterized in that: The pedal mechanism 2 comprises a plurality of cross bars 2 (16), and the plurality of cross bars 2 (16) are equidistantly inserted on the outer walls of the two handrails 2 (18). The outer walls of the cross bars 2 (16) are sleeved with pedals 2 (17). The end of the pedals 2 (17) away from the cross bars 2 (16) is inserted with an insertion rod 2 (13). Auxiliary plates 2 (12) are installed on the outer walls of both sides of the insertion rod 2 (13). One end of the two auxiliary plates 2 (12) is hinged to the positions of the two ends of the bottom outer wall of the top pedal 2 (17) near the limit plate 2 (28). One end of the pedal 2 (17) located at the top is fixedly installed with a buckle plate 2 (27), one end of the buckle plate 2 (27) is horizontally attached to the surface of the limit plate 2 (28), and one end of the buckle plate 2 (27) is buckled with one end of the limit plate 2 (28).

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