Movable climbing ladder

Abstract

The utility model discloses a movable climbing ladder, and relates to the technical field of climbing operation auxiliary equipment. The movable climbing ladder comprises two vertical rods, two horizontal rods, a plurality of movable frames, a plurality of pedals and a movable assembly, the two vertical rods are fixedly connected with the two horizontal rods respectively, and the movable frames are assembled on the horizontal rods in a sliding mode and provided with locking positions. The heights of the multiple moving frames are reduced in the direction away from the vertical rod, the multiple pedals and the multiple moving frames are arranged in a one-to-one correspondence mode, one ends of the pedals are rotationally connected with the corresponding moving frames, and the other ends of the pedals are assembled on the corresponding moving frames or the vertical rod in a sliding mode; the moving assembly is arranged on the side, away from the moving frame, of the vertical rod. In the using process, the movable climbing ladder is good in stability, convenient for people to climb, capable of reducing the climbing risk, convenient to move and transfer and small in occupied space during storage.

Description

Technical Field

[0001] The utility model relates to the technical field of climbing work auxiliary equipment, in particular to a mobile climbing ladder. Background Art

[0002] The water prevention and control team has to install the orifice pipes of the roof drainage holes, the orifice pipes of the water pressure observation holes in the goaf, the water pipes, etc. underground, as well as climbing and hanging cables, signboards and other operations. High-altitude operations are frequent, and a ladder that is easy to climb and movable is needed for auxiliary operations.

[0003] Common ladders used for aerial work include straight ladders and herringbone ladders. When using a straight ladder, it needs to be tilted and placed against the ground and the wall at both ends. The angle between the ladder and the ground cannot be too small or too large. If it is too small, the ground cannot provide enough friction, and if it is too large, it is difficult to climb. Herringbone ladders can generally be folded. When folded, it is in the shape of two straight ladders placed side by side. When opened, it is in the shape of a herringbone. At this time, it can use its own pulling force to keep the ladder feet balanced and placed on the ground. However, whether it is a straight ladder or a herringbone ladder, their load-bearing capacity is weak and can only be used by one person. The user cannot move freely on the ladder, resulting in the user having to repeatedly climb up and down and adjust the position of the ladder when operating a target at a relatively close distance. The operation is extremely inconvenient, and the use height of the straight ladder or herringbone ladder is less utilized relative to the overall height. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the utility model proposes a mobile climbing ladder, which has good stability during use, is convenient for people to climb, reduces the risk of climbing, is easy to move, is convenient to transport, and occupies little space when stored.

[0006] The mobile climbing ladder of the utility model embodiment comprises:

[0007] Vertical rods and horizontal rods, wherein two vertical rods are provided at intervals, and two horizontal rods are provided and are respectively fixedly connected to the two vertical rods;

[0008] A plurality of movable racks, wherein the plurality of movable racks are slidably mounted on the two horizontal rods and have a locking position, in which the corresponding movable racks are fixed relative to the horizontal rods, and the heights of the plurality of movable racks are reduced in a direction away from the vertical rods;

[0009] A plurality of pedals, wherein the plurality of pedals are arranged in one-to-one correspondence with the plurality of movable frames, one end of the pedal is rotatably connected to the corresponding movable frame, the other end of the pedal is slidably mounted on the movable frame adjacent to the vertical rod, and the other end of the pedal on the movable frame adjacent to the vertical rod is slidably mounted on the vertical rod;

[0010] A moving assembly is arranged on a side of the vertical rod away from the moving frame.

[0011] The mobile climbing ladder of the embodiment of the utility model has good stability during use, is convenient for people to climb, reduces the risk of climbing, and is easy to move and transport, and occupies little space when stored.

[0012] In some embodiments, the horizontal rod includes a fixed rod segment and a rotating rod segment, the fixed rod segment is fixedly connected to the vertical rod, the rotating rod segment is rotatably connected to the fixed rod segment, and the length dimension of the fixed rod segment is not less than the sum of the width dimensions of the multiple mobile frames in the extension direction of the fixed rod segment, the rotating rod segment has a first position and a second position, in the first position, the rotating rod segment is parallel to the fixed rod segment and is used to provide a slide rail for the mobile frame, in the second position, the rotating rod segment is set at an angle to the fixed rod segment, and the rotating rod segment is used to limit the movement of multiple mobile frames on the fixed rod segment.

[0013] In some embodiments, a first slide groove is provided on the fixed rod section, and a second slide groove is provided on the rotating rod section. The first slide groove is connected to the second slide groove. The cross-sections of the first slide groove and the second slide groove are both inverted T-shaped and have the same size. A slider is provided at the bottom of the movable frame, and the slider is assembled on the first slide groove and slides along the first slide groove and the second slide groove.

[0014] In some embodiments, it includes a connecting member and a limit pin, and a plurality of limit holes are provided on the fixed rod segment and the rotating rod segment corresponding to the locking position intervals. The connecting member is provided on the movable frame, and the limit pin is passed through the connecting member and is used to be passed through the limit hole.

[0015] In some embodiments, the connecting member has a U-shaped cross-section and includes two vertical plate segments arranged in parallel, the vertical plate segments are used to clamp on both sides of the horizontal rod, and / or the limit pin is threadedly connected to the connecting member.

[0016] In some embodiments, a limit plate is included, one end of which is rotatably connected to the rotating rod segment, the other end of the limit plate is provided with a hanging groove, and a hanging column is provided on the vertical rod. In the second position, the other end of the limit plate is hung on the hanging column.

[0017] In some embodiments, a stop portion is provided at one end of the hanging column away from the vertical rod, and the stop portion is used to stop and cooperate with the limiting plate in the axial direction of the hanging column at the second position.

[0018] In some embodiments, a locking pin is provided on the limit plate corresponding to the hanging groove, and the position of the locking pin is adjustable along the extension direction of the limit plate. The locking pin is used to cooperate with the hanging column in the radial direction of the hanging column.

[0019] In some embodiments, a third slide groove is provided on the vertical rod, and one end of the pedal adjacent to the vertical rod is slidably disposed in the third slide groove, and the bottom end of the third slide groove is not lower than the top end of the adjacent mobile frame, and a fourth slide groove is provided on the mobile frame, and one end of the pedal adjacent to the mobile frame on the side of the mobile frame away from the vertical rod is slidably disposed in the fourth slide groove, and the bottom end of the fourth slide groove is not lower than the top end of the adjacent mobile frame on the side away from the vertical rod.

[0020] In some embodiments, the movable component includes a plurality of rollers disposed on the vertical rod, or the movable component includes a connecting plate and rollers disposed on the connecting plate, the connecting plate is fixedly connected to the vertical rod and is arranged at an acute angle, and at least two pairs of rollers are arranged on the connecting plate at intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic structural diagram of the mobile climbing ladder in use according to the embodiment of the utility model.

[0022] Figure 2 It is a schematic structural diagram of the mobile climbing ladder of an embodiment of the utility model when it is folded.

[0023] Figure 3 It is a schematic structural diagram of a vertical rod in a mobile climbing ladder according to an embodiment of the utility model.

[0024] Figure 4 The utility model is a schematic structural diagram of a horizontal rod in a mobile climbing ladder according to an embodiment of the utility model.

[0025] Figure 5 The utility model is a schematic diagram of the connection between the connecting member and the mobile frame in the mobile climbing ladder of the embodiment of the utility model.

[0026] Figure 6 The utility model is a schematic diagram of the structure of a limit plate in a mobile climbing ladder according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] Vertical rod 1; hanging column 11; third slide slot 12; horizontal rod 2; fixed rod section 21; first slide slot 211; second slide slot 221; rotating rod section 22; limiting hole 23; moving frame 3; fourth slide slot 31; pedal 4; connecting piece 5; limiting pin 6; limiting plate 7; hanging slot 71; locking pin 72; limiting cylinder 73; tensioning spring 74; roller 8. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0030] like Figure 1 , 2 As shown, the mobile climbing ladder of the utility model embodiment comprises a vertical rod 1, a horizontal rod 2, a plurality of movable frames 3, a plurality of pedals 4 and a movable assembly. The vertical rods 1 are provided with two at intervals, the horizontal rods 2 are provided with two and are respectively fixedly connected to the two vertical rods 1, the plurality of movable frames 3 are slidably assembled on the two horizontal rods 2 and have a locking position. In the locking position, the corresponding movable frames 3 are fixed relative to the horizontal rods 2, the heights of the plurality of movable frames 3 are reduced in the direction away from the vertical rod 1, the plurality of pedals 4 are arranged in a one-to-one correspondence with the plurality of movable frames 3, one end of the pedal 4 is rotatably connected to the corresponding movable frame 3, the other end of the pedal 4 is slidably assembled on the movable frame 3 adjacent to the side of the vertical rod 1 of the movable frame 3, the other end of the pedal 4 on the movable frame 3 adjacent to the vertical rod 1 is slidably assembled on the vertical rod 1, and the movable assembly is arranged on the side of the vertical rod 1 away from the movable frame 3.

[0031] When the movable climbing ladder of the utility model is in use, the movable frame 3 is slid away from the vertical rod 1, and the movable frame 3 moves in the direction away from the vertical rod 1. At the same time, under the action of gravity, the other end of the pedal 4 connected to the movable frame 3 moves downward. When the position of the fallen end of the pedal 4 remains unchanged, the movable frame 3 drives the movable frame 3 located on the side of the movable frame 3 close to the vertical rod 1 to move, until the position of the fallen end of multiple pedals 4 no longer changes, and the multiple movable frames 3 move to the corresponding locking positions respectively. At this time, the multiple pedals 4 are arranged in steps to facilitate people to climb, or according to the climbing height requirements, a set number of movable frames 3 are moved out so that the height of the corresponding pedals 4 meets the climbing height requirements; when the whole movable climbing ladder is converged to move, the multiple movable frames 3 are moved in the direction close to the vertical rod 1, and the sliding assembly ends of the multiple pedals 4 move along the end away from the horizontal rod 2, and the multiple movable frames 3 are overlapped together to reduce the occupied volume of the whole device. At the same time, the vertical rod 1 is tilted at a certain angle, and the movable assembly contacts the ground to facilitate the movement of the device.

[0032] The mobile climbing ladder of the embodiment of the utility model has good stability during use, is convenient for people to climb, reduces the risk of climbing, and is easy to move and transport, and occupies little space when stored.

[0033] Optionally, a connecting rib is provided between the two vertical rods 1 , and a connecting rib is provided between the two horizontal rods 2 .

[0034] Optionally, the height difference between any two adjacent moving frames 3 is equal.

[0035] In some embodiments, the horizontal rod 2 includes a fixed rod segment 21 and a rotating rod segment 22. The fixed rod segment 21 is fixedly connected to the vertical rod 1, and the rotating rod segment 22 is rotatably connected to the fixed rod segment 21. The length dimension of the fixed rod segment 21 is not less than the sum of the width dimensions of the multiple mobile frames 3 in the extension direction of the fixed rod segment 21. The rotating rod segment 22 has a first position and a second position. In the first position, the rotating rod segment 22 is parallel to the fixed rod segment 21 and is used to provide a slide rail for the mobile frame 3. In the second position, the rotating rod segment 22 is set at an angle to the fixed rod segment 21, and the rotating rod segment 22 is used to limit the movement of multiple mobile frames 3 on the fixed rod segment 21.

[0036] When the mobile climbing ladder is in use, the rotating rod segment 22 and the fixed rod segment 21 are both placed on the ground, the rotating rod segment 22 is parallel to the fixed rod segment 21, and the mobile frame 3 can slide continuously on the rotating rod segment 22 and the fixed rod segment 21, so as to facilitate the deployment of multiple mobile frames 3. When the mobile climbing ladder is folded, the multiple mobile frames 3 are moved toward the direction close to the vertical rod 1 and overlapped together. The length dimension of the fixed rod segment 21 is not less than the sum of the width dimensions of the multiple mobile frames 3 in the extension direction of the fixed rod segment 21. By rotating the rotating rod segment 22 to a vertical position or pressing one end of the rotating rod segment 22 against the mobile frame 3, the movement range of the mobile frame 3 can be limited, thereby ensuring safety during the movement process and reducing the overall occupied space of the mobile climbing ladder when it is folded, so as to facilitate storage and movement.

[0037] Optionally, a connecting hinge is provided at the connecting position between the fixed rod segment 21 and the rotating rod segment 22 .

[0038] In some embodiments, a first slide groove 211 is provided on the fixed rod segment 21, and a second slide groove 221 is provided on the rotating rod segment 22. The first slide groove 211 is connected to the second slide groove 221. The cross-sections of the first slide groove 211 and the second slide groove 221 are both inverted T-shaped and have the same size. A slider is provided at the bottom of the movable frame 3, and the slider is assembled in the first slide groove 211 and slides along the first slide groove 211 and the second slide groove 221.

[0039] In the first position, when the moving frame 3 away from the vertical rod 1 moves on the first slide groove 211, the slider can move into the second slide groove 221, which is convenient for the deployment and installation of multiple moving frames 3 and easy to operate.

[0040] Optionally, the mobile frame 3 includes two support rods and a connecting rib connected between the two support rods.

[0041] In some embodiments, it includes a connecting member 5 and a limit pin 6, and a plurality of limit holes are provided on the fixed rod segment 21 and the rotating rod segment 22 at intervals corresponding to the locking positions. The connecting member 5 is provided on the movable frame 3, and the limit pin 6 is passed through the connecting member 5 and is used to be passed through the limit hole.

[0042] Move the moving frame 3 to the locking position, align the limit pin 6 with the limit hole, and install the limit pin 6 in the limit hole, so as to fix the moving frame 3, which has a simple structure and is easy to operate.

[0043] In some embodiments, the connecting member 5 has a U-shaped cross section and includes two vertical plate segments arranged in parallel, and the vertical plate segments are used to clamp on both sides of the horizontal rod 2 .

[0044] The connecting member 5 includes two vertical plate sections arranged in parallel, which are clamped at both ends of the horizontal rod 2 by the vertical plate sections to limit the moving direction of the mobile frame 3, strengthen the protection of the horizontal rod 2, reduce the structural deformation of the horizontal rod 2 caused by the mobile frame 3 during the movement, and strengthen the connection strength between the mobile frame 3 and the horizontal rod 2 when it is in the locked position.

[0045] Optionally, the connecting member 5 is fixed on the mobile frame 3 and extends in a direction perpendicular to the extension direction of the horizontal rod 2, thereby ensuring the connection strength between the connecting member 5 and the fixing member and reducing the distance between two adjacent mobile frames 3 when multiple mobile frames 3 are stacked.

[0046] Optionally, the connecting member 5 is slidably mounted on the mobile rack 3. When multiple mobile racks 3 are stacked, the height between two adjacent connecting members 5 can be adjusted to reduce the interference of multiple connecting members 5 on the distance between two adjacent mobile racks 3 when stacked.

[0047] In some embodiments, the limit pin 6 is threadedly connected to the connecting member 5. The height of the limit pin 6 is adjusted through the threaded connection of the limit pin 6, which prevents the limit pin 6 from falling into the previous limit hole when the moving frame 3 has not reached the corresponding limit hole. At the same time, the limit pin 6 is threadedly connected to the connecting member 5 to increase the connection reliability between the limit pin 6 and the connecting member 5, thereby preventing the limit pin 6 from falling out of the limit hole or being lost when the entire device is moved.

[0048] In some embodiments, it includes a limit plate 7, one end of which is rotatably connected to the rotating rod segment 22, the other end of the limit plate 7 is provided with a hanging groove 71, and a hanging column 11 is provided on the vertical rod 1. In the second position, the other end of the limit plate 7 is hung on the hanging column 11.

[0049] In the second position, when the multiple mobile racks 3 are folded and stowed, the position of the rotating rod segment 22 can be fixed through the cooperative connection between the hanging column 11 and the limiting plate 7, thereby limiting the position of the multiple mobile racks 3, facilitating the overall movement, while ensuring the safety during movement, avoiding the use of additional ropes to tie up the multiple mobile racks 3, and facilitating operation.

[0050] In some embodiments, a stopper is provided at one end of the hanging column 11 away from the vertical rod 1 , and the stopper is used to stop and cooperate with the limiting plate 7 in the axial direction of the hanging column 11 at the second position.

[0051] A stopper is provided to prevent the end of the limit plate 7 from slipping off the hanging column 11 along the axial direction of the hanging column 11 when it is hung thereon, thereby ensuring the connection reliability between the limit plate 7 and the hanging column 11, and further ensuring the safety of the mobile climbing ladder when it moves after being folded.

[0052] In some embodiments, a locking pin 72 is provided on the limiting plate 7 corresponding to the hanging groove 71 , and the position of the locking pin 72 is adjustable along the extension direction of the limiting plate 7 . The locking pin 72 is used to cooperate with the hanging column 11 in the radial direction of the hanging column 11 .

[0053] The position of the locking pin 72 is adjustable. When the limit plate 7 is hooked to the hanging column 11, the locking pin 72 is moved to open the hanging groove 71 on the limit plate 7. When the limit plate 7 is hooked on the hanging column 11, the locking pin 72 is reset to close the hanging groove 71 to prevent the hanging column 11 from falling out of the hanging groove 71 due to vibration during the movement.

[0054] When the locking pin 77 is in the closed position, the locking pin 78 will be locked and the locking pin 71 will be locked.

[0055] In some embodiments, a third slide groove 12 is provided on the vertical rod 1, and one end of the pedal 4 adjacent to the vertical rod 1 is slidably set in the third slide groove 12, and the bottom end of the third slide groove 12 is not lower than the top of the adjacent moving frame 3. A fourth slide groove 31 is provided on the moving frame 3, and one end of the pedal 4 adjacent to the moving frame 3 located on the side of the moving frame 3 away from the vertical rod 1 is slidably set in the fourth slide groove 31, and the bottom end of the fourth slide groove 31 is not lower than the top of the adjacent moving frame 3 located on the side away from the vertical rod 1.

[0056] When the moving frame 3 adjacent to the vertical rod 1 moves relative to the vertical rod 1, it will drive the other end of the pedal 4 to move along the third slide groove 12 to facilitate the deployment and folding of the moving frame 3. When one of the two adjacent moving frames 3 moves relatively, one end of the pedal 4 moves along the fourth slide groove 31, and the bottom end of the third slide groove 12 is not lower than the top of the adjacent moving frame 3, and the bottom end of the fourth slide groove 31 is not lower than the top of the adjacent moving frame 3 on the side away from the vertical rod 1. When one end of the sliding slide moves to the bottom of the third slide groove 12 or the bottom of the fourth groove, it is convenient to provide supporting force to ensure the stability of the pedal 4 when in use. At the same time, when folding, it is convenient for the end of the pedal 4 to move in the direction away from the horizontal rod 2 to facilitate contraction.

[0057] Optionally, in the locked position, the angle between the pedal 4 and the support surface is no greater than 5°.

[0058] Optionally, one end of the pedal 4 is rotatably connected to a sliding block, and the sliding block is slidably assembled in the third groove or the fourth groove.

[0059] Optionally, a sliding round rod is fixedly provided at one end of the pedal 4 via a connecting rod, and the axial direction of the sliding round rod is perpendicular to the extension direction of the third groove.

[0060] In some embodiments, the moving assembly includes a plurality of rollers 8 disposed on the vertical rod 1. Movement via the rollers 8 avoids the need for other moving equipment or manual handling, thereby facilitating movement.

[0061] In some embodiments, the moving assembly includes a connecting plate and rollers 8 arranged on the connecting plate. The connecting plate is fixedly connected to the vertical rod 1 and is arranged at an acute angle. At least two pairs of rollers 8 are arranged on the connecting plate at intervals.

[0062] By providing the connecting plate, the entire mobile climbing ladder can be in contact with the ground through the rollers 8 during movement, thereby reducing the effort of the moving personnel, saving effort and being convenient.

[0063] The specific angle value of the angle between the connecting plate and the vertical plate can be determined according to the length of the connecting plate, and it is ensured that the center of the mobile aerial platform after being folded falls between the two groups of rollers 8 on the outside.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mobile climbing ladder, characterized in that: include: Vertical rods and horizontal rods, wherein two vertical rods are provided at intervals, and two horizontal rods are provided and are respectively fixedly connected to the two vertical rods; A plurality of movable racks, wherein the plurality of movable racks are slidably mounted on the two horizontal rods and have a locking position, in which the corresponding movable racks are fixed relative to the horizontal rods, and the heights of the plurality of movable racks are reduced in a direction away from the vertical rods; A plurality of pedals, wherein the plurality of pedals are arranged in one-to-one correspondence with the plurality of movable frames, one end of the pedal is rotatably connected to the corresponding movable frame, the other end of the pedal is slidably mounted on the movable frame adjacent to the vertical rod, and the other end of the pedal on the movable frame adjacent to the vertical rod is slidably mounted on the vertical rod; A moving assembly is arranged on a side of the vertical rod away from the moving frame.

2. The mobile climbing ladder according to claim 1, characterized in that: The horizontal rod includes a fixed rod segment and a rotating rod segment, the fixed rod segment is fixedly connected to the vertical rod, the rotating rod segment is rotatably connected to the fixed rod segment, and the length of the fixed rod segment is not less than the sum of the widths of the multiple mobile racks in the extension direction of the fixed rod segment, the rotating rod segment has a first position and a second position, in the first position, the rotating rod segment is parallel to the fixed rod segment and is used to provide a slide rail for the mobile rack, in the second position, the rotating rod segment is set at an angle to the fixed rod segment, and the rotating rod segment is used to limit the movement of multiple mobile racks on the fixed rod segment.

3. The mobile climbing ladder according to claim 2, characterized in that: The fixed rod section is provided with a first slide groove, and the rotating rod section is provided with a second slide groove, the first slide groove is connected to the second slide groove, the cross-sections of the first slide groove and the second slide groove are both inverted T-shaped and have the same size, and a slider is provided at the bottom of the movable frame, and the slider is assembled in the first slide groove and slides along the first slide groove and the second slide groove.

4. The mobile climbing ladder according to claim 2, characterized in that: It includes a connecting piece and a limiting pin. The fixed rod segment and the rotating rod segment are provided with a plurality of limiting holes at intervals corresponding to the locking positions. The connecting piece is arranged on the movable frame. The limiting pin is passed through the connecting piece and is used to be passed through the limiting hole.

5. The mobile climbing ladder according to claim 4, characterized in that: The connecting member has a U-shaped cross section and comprises two vertical plate sections arranged in parallel, wherein the vertical plate sections are used to clamp on both sides of the horizontal rod, and / or the limiting pin is threadedly connected to the connecting member.

6. The mobile climbing ladder according to claim 2, characterized in that: It includes a limit plate, one end of which is rotatably connected to the rotating rod section, the other end of the limit plate is provided with a hanging groove, and the vertical rod is provided with a hanging column. In the second position, the other end of the limit plate is hung on the hanging column.

7. The mobile climbing ladder according to claim 6, characterized in that: A stopper is provided at one end of the hanging column away from the vertical rod, and the stopper is used to stop and cooperate with the limiting plate in the axial direction of the hanging column at the second position.

8. The mobile climbing ladder according to claim 6, characterized in that: A locking pin is provided on the limit plate corresponding to the hanging groove, and the position of the locking pin is adjustable along the extension direction of the limit plate. The locking pin is used to cooperate with the hanging column in the radial direction of the hanging column.

9. The mobile climbing ladder according to claim 1, characterized in that: A third slide groove is provided on the vertical rod, and one end of the pedal adjacent to the vertical rod is slidably set in the third slide groove, and the bottom end of the third slide groove is not lower than the top end of the adjacent moving frame. A fourth slide groove is provided on the moving frame, and one end of the pedal adjacent to the moving frame on a side of the moving frame away from the vertical rod is slidably set in the fourth slide groove, and the bottom end of the fourth slide groove is not lower than the top end of the adjacent moving frame on the side away from the vertical rod.

10. The mobile climbing ladder according to claim 1, characterized in that: The moving component includes a plurality of rollers arranged on the vertical rod, or the moving component includes a connecting plate and rollers arranged on the connecting plate, the connecting plate is fixedly connected to the vertical rod and is arranged at an acute angle, and at least two pairs of rollers are arranged on the connecting plate at intervals.

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