Assembly type folding ladder

Abstract

The utility model discloses an assembly type folding ladder which comprises outer supporting legs, inner supporting legs are rotationally connected to the interiors of the top ends of the outer supporting legs on the two sides respectively, communicating grooves are formed in the upper sides of the outer supporting legs and the upper sides of the inner supporting legs, and sliding grooves communicated with the communicating grooves are formed in the outer supporting legs and the inner supporting legs. A first gear is rotatably connected to the inner wall of the bottom end of the sliding groove, the tail end of the first gear penetrates through the sliding groove to be fixedly connected with a rotating wheel, the top of the first gear is in meshed connection with a second gear, the tail end of the second gear is fixedly connected with a lead screw, the outer side of the lead screw is in meshed connection with a moving table, and a connecting piece is fixedly connected to the top of the moving table; the connecting pieces penetrate through the outer sides of the communicating grooves to be connected with pushing rods through rotating shafts, the sides, deviating from each other, of the outer sides of the two sets of outer supporting legs and the inner supporting legs are rotationally connected with a plurality of handrails, the other ends of the handrails are rotationally connected with the pushing rods, the foldable handrails can be added to the folding ladder, and the using safety of the folding ladder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding ladders, in particular to an assembled folding ladder. Background Art

[0002] Folding ladders are civil engineering supplies that help workers climb up and down on the construction site, just like a movable staircase. The folding ladder is opened when in use and folded up after use for easy transfer. Folding ladders must be made solid and firm. Folding ladders are widely used in various civil engineering projects and decoration projects. The convenience and dual-use of folding ladders are liked by more and more people.

[0003] The existing folding ladders are often simple in structure because they need to be easy for people to move by hand. The existing assembled folding ladders are not equipped with handrails, which makes it risky to use the folding ladders to transport items up and down. In addition, the existing folding ladders do not have a locking device to prevent recovery after being released, which also poses a risk of use. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled folding ladder to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled folding ladder comprises outer legs, the top ends of the outer legs on both sides are rotatably connected to the inner legs respectively, the outer legs and the inner legs are provided with a connecting groove on the upper side, the outer legs and the inner legs are provided with a sliding groove communicating with the connecting groove on the inner side, the inner wall of the bottom end of the sliding groove is rotatably connected to a first gear, the tail end of the first gear penetrates the sliding groove and is fixedly connected to a rotating wheel, the top of the first gear is meshed and connected to a second gear, the tail end of the second gear is fixedly connected to a lead screw, the tail end of the lead screw is rotatably connected to the inner wall of the sliding groove, the outer side of the lead screw is meshed and connected to a moving platform, the top of the moving platform is fixedly connected to a connecting piece, the connecting piece penetrates the connecting groove and is connected to a pushing rod with a rotating shaft outside the connecting groove, and a plurality of handrails are rotatably connected to the opposite sides of the outer sides of the two groups of the outer legs and the inner legs, and the other end of the handrail is rotatably connected to the pushing rod.

[0006] Preferably, a plurality of steps are fixedly connected between the outer legs on both sides.

[0007] Preferably, a pedal is rotatably connected between the inner legs on both sides, a connecting rod is rotatably connected to the outer side of the other end of the pedal, a support rod is rotatably connected to the outer side of the upper part of the connecting rod, the other end of the support rod is rotatably connected to the inner wall of the outer leg, and the top of the pedal is fixedly connected with anti-slip grooves.

[0008] Preferably, a sliding rod is fixedly connected to the outer side of the upper part of the inner leg, and the other end of the sliding rod is fixedly connected to a limiting plate, and a locking rod is fixedly connected to the outer side of the outer leg. An embedding groove is provided on the upper part of the locking rod close to the outer leg, and a connecting rod is slidably connected to the outer side of the sliding rod. The other end of the connecting rod is internally slidably connected to the outer side of the locking rod, and an embedding plate matching the embedding groove is fixedly connected to the inside of the connecting rod.

[0009] Preferably, a threaded rod is fixedly connected to the outer side of the bottom end of the inner leg, and a limiting nut is meshedly connected to the outer side of the threaded rod.

[0010] Preferably, the bottoms of the outer legs and the inner legs are covered with protective covers.

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

[0012] The utility model cooperates with a rotating wheel, a first gear, a second gear, a lead screw, a moving platform, a connecting piece, a connecting groove, a pushing rod, and a handrail. By rotating the rotating wheel, the first gear drives the second gear to rotate, the lead screw drives the moving platform to move, the connecting piece moves along the connecting groove to drive the bottom end of the pushing rod to move, the pushing rod drives the handrail to rotate around the supporting leg, and the handrail can be retracted and extended. A foldable handrail can be added to the folding ladder, thereby increasing the safety of the folding ladder.

[0013] The utility model also cooperates with the use of a sliding rod, a connecting rod, a locking rod, an embedding sheet, an embedding groove, an outer leg, an inner leg, a threaded rod, and a limiting nut. The connecting rod is slid along the sliding rod, so that the other end of the connecting rod enters the interior of the locking rod, and the embedding sheet is inserted into the embedding groove to prevent the outer leg and the inner leg from being recovered. The connecting rod is slid along the sliding rod so that the other end of the connecting rod is disengaged from the locking rod, and the connecting rod is rotated and inserted into the interior of the threaded rod. The limiting nut prevents the connecting rod from being disengaged, thereby realizing the recovery of the connecting rod, preventing the legs from being retracted, increasing the safety of the use of the folding ladder, and recovering and fixing the protective structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0015] Figure 2 This is a schematic diagram of the gear connection structure of the utility model from a second viewing angle;

[0016] Figure 3 This is a schematic diagram of the structure of the mobile station of the utility model from a third viewing angle;

[0017] Figure 4 This is a schematic diagram of the connecting rod structure of the utility model from a fourth viewing angle;

[0018] Figure 5 This is a schematic diagram of the fifth viewing angle locking rod structure of the utility model.

[0019] In the figure: 1. outer leg; 2. inner leg; 3. pedal; 4. anti-skid pattern; 5. connecting rod; 6. support rod; 7. step; 8. sliding rod; 9. limit plate; 10. connecting rod; 11. embedding plate; 12. locking rod; 13. embedding groove; 14. connecting groove; 15. sliding groove; 16. rotating wheel; 17. first gear; 18. second gear; 19. lead screw; 20. moving platform; 21. connecting plate; 22. pushing rod; 23. handrail; 24. threaded rod; 25. limit nut; 26. protective cover. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides a technical solution: an assembled folding ladder, comprising an outer leg 1, the top of the outer legs 1 on both sides are rotatably connected with the inner legs 2 respectively, the upper sides of the outer legs 1 and the inner legs 2 are provided with a connecting groove 14, the outer legs 1 and the inner legs 2 are provided with a sliding groove 15 connected with the connecting groove 14, the inner wall of the bottom end of the sliding groove 15 is rotatably installed with a first gear 17, the tail end of the first gear 17 penetrates the sliding groove 15 and is fixedly welded with a rotating wheel 16, the top of the first gear 17 is meshed and connected with a second gear 18, the tail end of the second gear 18 is fixedly welded with a lead screw 19, and the tail end of the lead screw 19 is rotatably connected with the inner wall of the sliding groove 15, The outer side of the lead screw 19 is meshedly connected with a moving platform 20, a connecting piece 21 is fixedly welded on the top of the moving platform 20, the connecting piece 21 penetrates the connecting groove 14 and the outer side of the rotating shaft is installed with a push rod 22, a plurality of handrails 23 are rotatably installed on the side of the outer sides of the two groups of outer legs 1 and the inner legs 2 that are away from each other, the other end of the handrail 23 is rotatably connected with the push rod 22, by rotating the rotating wheel 16, the first gear 17 drives the second gear 18 to rotate, the lead screw 19 rotates to drive the moving platform 20 to move along the sliding groove 15, and the bottom end of the push rod 22 is driven to move through the connecting piece 21, and the push rod 22 rotates to drive the handrail 23 to rotate around the leg, so as to realize the retraction and extension of the handrail 23;

[0022] A plurality of steps 7 are fixedly welded between the outer legs 1 on both sides; a pedal 3 is rotatably installed between the inner legs 2 on both sides, a connecting rod 5 is rotatably installed on the outer side of the other end of the pedal 3, a support rod 6 is rotatably installed on the outer side of the upper part of the connecting rod 5, and the other end of the support rod 6 is rotatably connected to the inner wall of the outer leg 1, and the connecting rod 5 drives the pedal 3 to rotate around the inner leg 2 to realize the retraction of the pedal 3 when the outer leg 1 and the inner leg 2 are folded, and an anti-slip pattern 4 is fixedly welded on the top of the pedal 3; a sliding rod 8 is fixedly welded on the outer side of the upper part of the inner leg 2, and a limiting plate 9 is fixedly welded on the other end of the sliding rod 8, a locking rod 12 is fixedly welded on the outer side of the outer leg 1, and an embedding groove 13 is provided on the upper part of the locking rod 12 close to the outer leg 1, and a connecting rod 1 is slidably installed on the outer side of the sliding rod 8 0, the other end of the connecting rod 10 is internally slidably connected to the outside of the locking rod 12, an embedding piece 11 matching the embedding groove 13 is fixedly welded inside the connecting rod 10, and the connecting rod 10 is slid along the sliding rod 8 to make the other end of the connecting rod 10 enter the inside of the locking rod 12, and the embedding piece 11 is inserted into the embedding groove 13 to prevent the outer leg 1 and the inner leg 2 from being retracted; a threaded rod 24 is fixedly welded to the outside of the bottom end of the inner leg 2, and a limiting nut 25 is engaged and connected to the outer side of the threaded rod 24. The connecting rod 10 is rotated and inserted into the inside of the threaded rod 24, and the connecting rod 10 is prevented from being detached by the limiting nut 25; a protective cover 26 is provided at the bottom of the outer leg 1 and the inner leg 2, and the protective cover 26 prevents the legs from damaging the ground and can play an anti-slip role.

[0023] Working principle: When the utility model is in use, by rotating the rotating wheel 16, the first gear 17 drives the second gear 18 to rotate, and the screw 19 rotates to drive the moving platform 20 to move along the sliding groove 15, and the bottom end of the pushing rod 22 is driven to move through the connecting piece 21, and the pushing rod 22 rotates to drive the armrest 23 to rotate around the leg, so as to realize the retraction and extension of the armrest 23. When the outer leg 1 and the inner leg 2 are retracted inwardly, the linkage rod 5 drives the pedal 3 to rotate around the inner leg 2 to realize the retraction of the pedal 3, and slides the connecting rod 10 along the sliding rod 8 so that the other end of the connecting rod 10 enters the locking rod 12, and the embedding piece 11 is inserted into the embedding groove 13 to prevent the outer leg 1 and the inner leg 2 from being retracted, and slides the connecting rod 10 along the sliding rod 8 so that the other end of the connecting rod 10 is disengaged from the locking rod 12, and the connecting rod 10 is rotated and inserted into the threaded rod 24, and the connecting rod 10 is prevented from being disengaged by the limiting nut 25, so as to realize the recovery of the connecting rod 10.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] 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. An assembled folding ladder, comprising an outer leg (1), characterized in that: The top ends of the outer legs (1) on both sides are rotatably connected to the inner legs (2), the upper sides of the outer legs (1) and the inner legs (2) are provided with connecting grooves (14), the inner sides of the outer legs (1) and the inner legs (2) are provided with sliding grooves (15) which are connected to the connecting grooves (14), the inner walls of the bottom ends of the sliding grooves (15) are rotatably connected to the first gear (17), the tail ends of the first gear (17) penetrate the sliding grooves (15) and are fixedly connected to the rotating wheel (16), the top of the first gear (17) is meshedly connected to the second gear (18), and the second gear (18) is meshedly connected to the second gear (18). The rear end of the wheel (18) is fixedly connected to a lead screw (19), the rear end of the lead screw (19) is rotatably connected to the inner wall of the sliding groove (15), the outer side of the lead screw (19) is meshingly connected to a moving platform (20), the top of the moving platform (20) is fixedly connected to a connecting piece (21), the connecting piece (21) penetrates the connecting groove (14) and is connected to a push rod (22) through the outer rotating shaft, and a plurality of handrails (23) are rotatably connected to the outer sides of the two groups of outer legs (1) and inner legs (2) that are away from each other, and the other end of the handrail (23) is rotatably connected to the push rod (22).

2. The assembled folding ladder according to claim 1, characterized in that: A plurality of steps (7) are fixedly connected between the outer legs (1) on both sides.

3. The assembled folding ladder according to claim 1, characterized in that: A pedal (3) is rotatably connected between the inner legs (2) on both sides, a connecting rod (5) is rotatably connected to the outer side of the other end of the pedal (3), a support rod (6) is rotatably connected to the outer side of the upper part of the connecting rod (5), the other end of the support rod (6) is rotatably connected to the inner wall of the outer leg (1), and an anti-slip pattern (4) is fixedly connected to the top of the pedal (3).

4. The assembled folding ladder according to claim 1, characterized in that: The outer side of the upper part of the inner leg (2) is fixedly connected to a sliding rod (8), the other end of the sliding rod (8) is fixedly connected to a limiting plate (9), the outer side of the outer leg (1) is fixedly connected to a locking rod (12), an embedding groove (13) is provided on the upper part of the locking rod (12) close to the outer leg (1), the outer side of the sliding rod (8) is slidably connected to a connecting rod (10), the other end of the connecting rod (10) is internally slidably connected to the outer side of the locking rod (12), and the connecting rod (10) is internally fixedly connected to an embedding plate (11) that matches the embedding groove (13).

5. The assembled folding ladder according to claim 1, characterized in that: A threaded rod (24) is fixedly connected to the outer side of the bottom end of the inner leg (2), and a limit nut (25) is meshedly connected to the outer side of the threaded rod (24).

6. The assembled folding ladder according to claim 1, characterized in that: The bottoms of the outer supporting leg (1) and the inner supporting leg (2) are covered with protective covers (26).

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