Folding ladder

Abstract

The utility model provides a folding ladder, belongs to the technical field of folding ladders, and aims to solve the problems that in the using process of an existing folding ladder, when the ground is not flat enough, the folding ladder shakes, workers are prone to toppling over when climbing, and potential safety hazards exist. The two supporting frames are hinged to the rear end of the ladder frame; the plurality of cross rods are fixedly connected to the inner sides of the two support frames respectively; a plurality of pedal bases are arranged, and the plurality of pedal bases are hinged to the inner side of the ladder frame; the number of the connecting rods is two, and the two connecting rods are hinged to the outer sides of the rear ends of the pedal bases respectively. The number of the supporting rods is two, and the front ends of the two supporting rods are hinged to the outer sides of the two connecting rods respectively. Through the arrangement of the folding ladder, the folding ladder is stabilized, the safety is improved, and the potential safety hazard is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of folding ladders, and more specifically, particularly relates to a folding ladder. Background Art

[0002] Railway locomotives are a vital part of the railway transportation system, and are mainly responsible for the maintenance, repair and inspection of locomotives and equipment. Folding ladders are one of the commonly used tools for maintenance, which can facilitate workers to move to higher places on the work platform for construction and operation.

[0003] According to the application number: CN202321350990.2, a folding ladder for a railway maintenance work platform is disclosed, which includes a herringbone ladder, the herringbone ladder includes a front support leg, the front support leg is rotatably connected to the rear support leg, and the front support leg is provided with a plurality of foldable pedal assemblies from top to bottom, the pedal assembly includes a pedal body, the top surface of the pedal body is provided with a water storage tank, the upper part of the water storage tank is provided with a leaking plate, the leaking plate is provided with a plurality of first leaking holes, and the front side wall of the pedal body is provided with a first water outlet hole; a water storage box is provided below the lowest pedal assembly, the top of the water storage box is provided with a leaking grille, the side wall of the water storage box is provided with a chute, and a protrusion is provided on the bottom side wall of the front support leg, the protrusion extends into the chute, and can slide along the inner wall of the chute. Before climbing the herringbone ladder, workers can remove most of the snow on the soles of their shoes, and can remove water from the surface of the leaking plate in time, so the leaking plate has sufficient friction, and the workers will not slip and fall when they get off the ladder.

[0004] Based on the above, when the existing folding ladder is in use, if the ground is not flat enough, the folding ladder will shake, and the staff will easily fall down when climbing, which poses a safety hazard. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a folding ladder to solve the problem that the existing folding ladder will shake when the ground is not flat during use, which may cause workers to fall down easily when climbing, posing a safety hazard.

[0006] The purpose and function of the folding ladder of the utility model are achieved by the following specific technical means:

[0007] A folding ladder comprises a ladder frame, a support frame, a cross bar, a pedal base, a connecting rod, a support rod, an adjustment mechanism and a switching mechanism; the support frames are provided with two, and the two support frames are hinged at the rear end of the ladder frame; the cross bars are provided with multiple, and the multiple cross bars are respectively fixedly connected to the inner sides of the two support frames; the pedal bases are provided with multiple, and the multiple pedal bases are hinged to the inner side of the ladder frame; the connecting rods are provided with two, and the two connecting rods are respectively hinged to the outer sides of the rear ends of the multiple pedal bases; the support rods are provided with two, and the front ends of the two support rods are respectively hinged to the outer sides of the two connecting rods; the adjustment mechanism is arranged at the lower ends of the ladder frame and the support frame; the switching mechanism is arranged on the inner side of the pedal base.

[0008] Furthermore, the adjustment mechanism includes: an annular groove, an adjustment sleeve and a fixed ring; the annular groove is provided with two groups, and the two groups of annular grooves are respectively opened on the outer side of the lower end of the ladder frame and the support frame; the adjustment sleeve is provided with two groups, and the two groups of adjustment sleeves are respectively rotatably connected to the outer side of the lower end of the ladder frame and the support frame, and the inner sides of the two groups of adjustment sleeves are provided with threads; the fixing ring is provided with two groups, and the two groups of fixing rings are respectively fixedly connected to the inner sides of the upper ends of the two groups of adjustment sleeves, and the two groups of fixing rings are respectively rotatably connected to the inner sides of the two groups of annular grooves.

[0009] Furthermore, the adjustment mechanism also includes: square grooves, square rods and adjustment rods; the square grooves are provided with two groups, and the two groups of square grooves are respectively opened on the inner sides of the lower ends of the ladder frame and the support frame; the square rods are provided with two groups, and the two groups of square rods are respectively slidably connected to the inner sides of the two groups of square grooves; the adjustment rods are provided with two groups, and the two groups of adjustment rods are respectively fixedly connected to the lower ends of the two groups of square rods, and the outer sides of the two groups of adjustment rods are provided with threads, and the two groups of adjustment rods are respectively threadedly connected to the two groups of adjustment sleeves.

[0010] Furthermore, the switching mechanism includes: an anti-slip pedal and anti-slip patterns; the anti-slip pedal is provided in plurality, and the plurality of anti-slip pedals are respectively slidably connected to the inner sides of the plurality of pedal bases; the anti-slip patterns are provided in plurality of groups, and the plurality of groups of anti-slip patterns are respectively fixedly connected to the upper and lower end surfaces of the plurality of anti-slip pedals.

[0011] Furthermore, the switching mechanism also includes: a limit groove, a limit slider and a compression spring; the limit groove is provided with multiple groups, and the multiple groups of limit grooves are respectively opened on the inner side of multiple pedal bases; the limit slider is provided with multiple groups, and the multiple groups of limit sliders are respectively slidably connected to the inner side of multiple anti-slip pedals; the compression spring is provided with multiple groups, one end of the multiple groups of compression springs are respectively fixedly connected to the outer side of the multiple groups of limit sliders, and the other end of the multiple groups of compression springs are respectively fixedly connected to the inner side of the multiple anti-slip pedals.

[0012] Furthermore, the switching mechanism also includes: a slide groove, a push rod and a fixed rod; the slide groove is provided with multiple groups, and the multiple groups of slide grooves are respectively opened on the inner side of multiple groups of limit sliders; the push rod is provided with multiple groups, and the multiple groups of push rods are respectively slidably connected to the inner side of multiple anti-slip pedals; the fixed rod is provided with multiple groups, and the multiple groups of fixed rods are respectively fixedly connected to the outer side of the multiple groups of push rods, and the multiple groups of fixed rods are respectively slidably connected to the inner side of the multiple groups of slide grooves.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model realizes the stability of the folding ladder by the arrangement of the adjusting mechanism. When the ground is not flat enough and causes the folding ladder to shake, the length of the adjusting rod can be adjusted by rotating the adjusting sleeve and the threaded connection of the adjusting sleeve and the adjusting rod, so that the two sets of adjusting rods are supported on the ground, thereby improving safety and reducing safety hazards; the switching of the anti-skid pedal is realized by the arrangement of the switching mechanism, and when the anti-skid pattern at the front end of the upper end of the anti-skid pedal is worn, the push rod can be pushed to drive the rear end limit sliding block to disengage from the limit groove under the action of the sliding groove and the fixed rod sliding connection. At this time, the anti-skid pedal can be pulled forward to pull the anti-skid pedal out, and then the anti-skid pedal can be reinstalled into the pedal base for use after the anti-skid pattern is turned over, so as to prevent the friction force of the anti-skid pattern from being reduced due to the wear of the anti-skid pattern, thereby improving safety and reducing the cost of use; through the arrangement of the above-mentioned mechanism, the stability of the folding ladder is realized, the safety is improved, the safety hazard is reduced, and the switching of the anti-skid pedal is realized, thereby improving safety and reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the main body of the utility model.

[0016] Figure 2 It is a structural schematic diagram of a cross-section of the support frame of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the disassembled adjusting sleeve of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the limit groove of the utility model.

[0019] Figure 5 It is a structural schematic diagram of a sectional view of a pedal base of the utility model.

[0020] Figure 6 It is a structural schematic diagram of a limit sliding block of the utility model.

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] 1. Ladder frame; 2. Support frame; 201. Crossbar; 3. Pedal base; 301. Limiting groove; 4. Connecting rod; 5. Support rod; 6. Annular groove; 7. Adjusting sleeve; 701. Fixing ring; 8. Square groove; 9. Square rod; 10. Adjusting rod; 11. Anti-slip pedal; 12. Anti-slip pattern; 13. Limiting slider; 1301. Slide groove; 14. Compression spring; 15. Push rod; 1501. Fixing rod. DETAILED DESCRIPTION

[0023] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples. Example

[0024] As attached Figure 1-Figure 3 As shown:

[0025] The utility model provides a folding ladder, comprising a ladder frame 1, a support frame 2, a cross bar 201, a pedal base 3, a connecting rod 4, a supporting rod 5 and an adjusting mechanism; two supporting frames 2 are provided, and the two supporting frames 2 are hinged at the rear end of the ladder frame 1; a plurality of cross bars 201 are provided, and the plurality of cross bars 201 are respectively fixedly connected to the inner sides of the two supporting frames 2; a plurality of pedal bases 3 are provided, and the plurality of pedal bases 3 are hinged at the inner side of the ladder frame 1; two connecting rods 4 are provided, and the two connecting rods 4 are respectively hinged to the outer sides of the rear ends of the plurality of pedal bases 3; two supporting rods 5 are provided, and the front ends of the two supporting rods 5 are respectively hinged to the outer sides of the two connecting rods 4; the adjusting mechanism is arranged at the lower ends of the ladder frame 1 and the support frame 2.

[0026] The adjusting mechanism includes: an annular groove 6, an adjusting sleeve 7, a fixing ring 701, a square groove 8, a square rod 9 and an adjusting rod 10; there are two groups of annular grooves 6, and the two groups of annular grooves 6 are respectively opened on the outer side of the lower end of the ladder frame 1 and the support frame 2; there are two groups of adjusting sleeves 7, and the two groups of adjusting sleeves 7 are respectively rotatably connected to the outer side of the lower end of the ladder frame 1 and the support frame 2, and the inner sides of the two groups of adjusting sleeves 7 are provided with threads; there are two groups of fixing rings 701, and the two groups of fixing rings 701 are respectively fixedly connected to the upper ends of the two groups of adjusting sleeves 7 , two groups of fixing rings 701 are rotatably connected to the inner sides of the two groups of annular grooves 6 respectively; two groups of square grooves 8 are provided, and the two groups of square grooves 8 are respectively opened on the inner sides of the lower ends of the ladder frame 1 and the support frame 2; two groups of square rods 9 are provided, and the two groups of square rods 9 are respectively slidably connected to the inner sides of the two groups of square grooves 8; two groups of adjusting rods 10 are provided, and the two groups of adjusting rods 10 are respectively fixedly connected to the lower ends of the two groups of square rods 9, and the outer sides of the two groups of adjusting rods 10 are provided with threads, and the two groups of adjusting rods 10 are respectively threadedly connected to the two groups of adjusting sleeves 7.

[0027] The specific usage and function of this embodiment: when the ground is not flat enough and causes the folding ladder to shake, the length of the adjusting rod 10 can be adjusted by rotating the adjusting sleeve 7 and the threaded connection between the adjusting sleeve 7 and the adjusting rod 10, so that both sets of adjusting rods 10 are supported on the ground to stabilize the folding ladder. Example

[0028] On the basis of the first embodiment, Figure 4-Figure 6 As shown, the switching mechanism includes: a limit groove 301, an anti-skid pedal 11, an anti-skid pattern 12, a limit slider 13, a slide groove 1301, a compression spring 14, a push rod 15 and a fixed rod 1501; the switching mechanism is arranged on the inner side of the pedal base 3; there are multiple groups of limit grooves 301, and the multiple groups of limit grooves 301 are respectively opened on the inner sides of multiple pedal bases 3; there are multiple anti-skid pedals 11, and the multiple anti-skid pedals 11 are respectively slidably connected to the inner sides of multiple pedal bases 3; there are multiple groups of anti-skid patterns 12, and the multiple groups of anti-skid patterns 12 are respectively fixedly connected to the upper and lower end surfaces of the multiple anti-skid pedals 11; there are multiple groups of limit sliders 13, and the multiple groups of limit sliders 13 are respectively slidably connected to the multiple The inner side of the anti-slip pedal 11 is provided with a plurality of groups of slide grooves 1301, and the plurality of groups of slide grooves 1301 are respectively opened on the inner sides of the plurality of groups of limit sliders 13; the plurality of groups of compression springs 14 are provided with a plurality of groups, and one end of the plurality of groups of compression springs 14 are respectively fixedly connected to the outer sides of the plurality of groups of limit sliders 13, and the other ends of the plurality of groups of compression springs 14 are respectively fixedly connected to the inner sides of the plurality of anti-slip pedals 11; the plurality of groups of push rods 15 are provided with a plurality of groups, and the plurality of groups of push rods 15 are respectively slidably connected to the inner sides of the plurality of anti-slip pedals 11; the plurality of fixing rods 1501 are provided with a plurality of groups, and the plurality of groups of fixing rods 1501 are respectively fixedly connected to the outer sides of the plurality of groups of push rods 15, and the plurality of groups of fixing rods 1501 are respectively slidably connected to the inner sides of the plurality of groups of slide grooves 1301.

[0029] The specific usage and function of this embodiment: when the anti-slip pattern 12 located at the front end of the upper end of the anti-slip pedal 11 is worn, the push rod 15 can be pushed so that the push rod 15 can drive the rear end limit slider 13 to disengage from the limit groove 301 under the action of the sliding connection between the slide groove 1301 and the fixed rod 1501. At this time, the anti-slip pedal 11 can be pulled forward to pull out the anti-slip pedal 11, and then the anti-slip pedal 11 can be flipped over and re-installed into the pedal base 3 for use.

[0030] In this article, there are a few points to note:

[0031] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0032] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0033] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A folding ladder, comprising a ladder frame (1), a support frame (2), a crossbar (201), a step base (3), a connecting rod (4), a support rod (5), an adjustment mechanism and a switching mechanism; the support frames (2) are provided with two, and the two support frames (2) are hinged at the rear end of the ladder frame (1); the crossbar (201) is provided with a plurality, and the plurality of crossbars (201) are respectively fixedly connected to the inner sides of the two support frames (2); the characteristics are: There are a plurality of pedal bases (3), and the plurality of pedal bases (3) are hinged on the inner side of the ladder frame (1); there are two connecting rods (4), and the two connecting rods (4) are respectively hinged on the outer sides of the rear ends of the plurality of pedal bases (3); there are two support rods (5), and the front ends of the two support rods (5) are respectively hinged on the outer sides of the two connecting rods (4); the adjustment mechanism is arranged at the lower ends of the ladder frame (1) and the support frame (2); and the switching mechanism is arranged on the inner side of the pedal base (3).

2. A folding ladder as claimed in claim 1, characterized in that: The adjustment mechanism comprises: an annular groove (6), an adjustment sleeve (7) and a fixing ring (701); the annular groove (6) is provided with two groups, and the two groups of annular grooves (6) are respectively opened on the outer sides of the lower ends of the ladder frame (1) and the support frame (2); the adjustment sleeve (7) is provided with two groups, and the two groups of adjustment sleeves (7) are respectively rotatably connected to the outer sides of the lower ends of the ladder frame (1) and the support frame (2), and the inner sides of the two groups of adjustment sleeves (7) are provided with threads; the fixing ring (701) is provided with two groups, and the two groups of fixing rings (701) are respectively fixedly connected to the inner sides of the upper ends of the two groups of adjustment sleeves (7), and the two groups of fixing rings (701) are respectively rotatably connected to the inner sides of the two groups of annular grooves (6).

3. A folding ladder as claimed in claim 2, characterized in that: The adjustment mechanism further comprises: a square groove (8), a square rod (9) and an adjustment rod (10); the square groove (8) is provided with two groups, and the two groups of square grooves (8) are respectively opened on the inner sides of the lower ends of the ladder frame (1) and the support frame (2); the square rod (9) is provided with two groups, and the two groups of square rods (9) are respectively slidably connected to the inner sides of the two groups of square grooves (8); the adjustment rod (10) is provided with two groups, and the two groups of adjustment rods (10) are respectively fixedly connected to the lower ends of the two groups of square rods (9); the outer sides of the two groups of adjustment rods (10) are provided with threads, and the two groups of adjustment rods (10) are respectively threadedly connected to the two groups of adjustment sleeves (7).

4. A folding ladder as claimed in claim 1, characterized in that: The switching mechanism comprises: an anti-slip pedal (11) and an anti-slip pattern (12); the anti-slip pedal (11) is provided in plurality, and the plurality of anti-slip pedals (11) are respectively slidably connected to the inner sides of the plurality of pedal bases (3); the anti-slip pattern (12) is provided in plurality of groups, and the plurality of groups of anti-slip patterns (12) are respectively fixedly connected to the upper and lower end surfaces of the plurality of anti-slip pedals (11).

5. A folding ladder as claimed in claim 4, characterized in that: The switching mechanism further comprises: a limit groove (301), a limit slider (13) and a compression spring (14); the limit groove (301) is provided in a plurality of groups, and the plurality of limit grooves (301) are respectively opened on the inner side of the plurality of pedal bases (3); the limit slider (13) is provided in a plurality of groups, and the plurality of limit sliders (13) are respectively slidably connected to the inner side of the plurality of anti-slip pedals (11); the compression spring (14) is provided in a plurality of groups, and one end of the plurality of compression springs (14) is respectively fixedly connected to the outer side of the plurality of limit sliders (13), and the other end of the plurality of compression springs (14) is respectively fixedly connected to the inner side of the plurality of anti-slip pedals (11).

6. A folding ladder as claimed in claim 5, characterized in that: The switching mechanism further comprises: a slide groove (1301), a push rod (15) and a fixed rod (1501); the slide groove (1301) is provided with a plurality of groups, and the plurality of groups of slide grooves (1301) are respectively opened on the inner sides of the plurality of groups of limit sliders (13); the push rod (15) is provided with a plurality of groups, and the plurality of groups of push rods (15) are respectively slidably connected to the inner sides of the plurality of anti-slip pedals (11); the fixed rod (1501) is provided with a plurality of groups, and the plurality of groups of fixed rods (1501) are respectively fixedly connected to the outer sides of the plurality of groups of push rods (15), and the plurality of groups of fixed rods (1501) are respectively slidably connected to the inner sides of the plurality of groups of slide grooves (1301).

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