Crawling ladder

Abstract

The utility model discloses a crawling ladder, which relates to the technical field of electric power overhaul and comprises a crawling ladder body, a fastening mechanism and an anti-skid mechanism, the fastening mechanism comprises a first plate and a fastening part, the first plate is movably connected to the first end of the crawling ladder body, the fastening part is arranged on the plate face, opposite to the crawling ladder body, of the first plate, and the first end of the crawling ladder body is the end away from the ground; the anti-skid mechanism comprises a second plate and an anti-skid component, the second plate is movably connected to the second end of the crawling ladder body, the anti-skid component is arranged on the plate face, facing the ground, of the second plate, and the second end of the crawling ladder body is the end close to the ground. The safety of the electric pole crawling ladder can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power maintenance, in particular to a ladder. Background Art

[0002] As a wire-laying mechanism on utility poles, ladders are an indispensable tool in the event of an accident or during power repairs. Power maintenance personnel often need to stand on ladders to repair power equipment. Pole ladders allow power workers to quickly reach the top of the pole, making them more convenient to use.

[0003] A pole ladder usually includes a clamp fixed on the pole and a ladder fixed on the clamp, and the installation and fixation between the clamp and the pole mainly relies on manual installation. When installing and fixing the clamp at the upper end of the ladder, maintenance personnel need to climb to the corresponding height to operate. In addition, the stable structure of the clamp and the pole in place is relatively simple.

[0004] It can be seen that the existing technology has the problem of low safety of the pole ladder. Utility Model Content

[0005] The embodiment of the utility model provides a ladder to solve the problem of low safety of electric pole ladders in the prior art.

[0006] In order to solve the above technical problems, the embodiment of the present utility model provides a ladder, comprising: a ladder body, a fastening mechanism and an anti-slip mechanism;

[0007] The fastening mechanism includes a first plate and a fastening component, the first plate being movably connected to the first end of the ladder body, the fastening component being arranged on a surface of the first plate opposite to the ladder body, and the first end of the ladder body being the end away from the ground;

[0008] The anti-slip mechanism includes a second plate and an anti-slip component, the second plate is movably connected to the second end of the ladder body, the anti-slip component is provided on the surface of the second plate facing the ground, and the second end of the ladder body is the end close to the ground;

[0009] Wherein, when the ladder is leaning against the pole at a preset angle with the horizontal plane, the first plate is perpendicular to the horizontal plane, and the fastening component is used to be fixed to the pole, the second plate is parallel to the horizontal plane, and the anti-slip component is used to contact the ground to prevent the ladder body from sliding.

[0010] Optionally, the fastening component includes a first bent plate, a second bent plate, a guide rod, a bidirectional screw rod and a motor;

[0011] The first plate is provided with an avoidance groove and a chute, the motor is fixedly installed in the avoidance groove, the first bent plate is slidably arranged in the chute, the second bent plate is slidably arranged in the chute, and the first bent plate and the second bent plate are arranged opposite to each other;

[0012] The first bent plate is provided with a first threaded hole and a first guide hole, the second bent plate is provided with a second threaded hole and a second guide hole, the bidirectional screw rod passes through the first threaded hole and the second threaded hole respectively, and the first end of the bidirectional screw rod is matched with the motor;

[0013] The first end of the guide rod passes through the first guide hole, and the second end of the guide rod passes through the second guide hole.

[0014] Optionally, a first pin is provided at one end of the first plate movably connected to the ladder body, and a first pin seat is provided at one end of the ladder body close to the fastening mechanism;

[0015] The first pin rod is matched and connected with the first pin seat, so that the first plate can perform circular motion with the first pin seat as a fulcrum.

[0016] Optionally, the anti-slip component includes a gripping spike assembly;

[0017] The nail grabbing components are evenly arranged on the board surface facing the ground in the second board.

[0018] Optionally, a second pin is provided at one end of the second plate movably connected to the ladder body;

[0019] A second pin seat is provided at one end of the ladder body close to the anti-slip mechanism;

[0020] The second pin rod is matched and connected with the second pin seat so that the second plate can perform circular motion with the second pin seat as a fulcrum.

[0021] Optionally, the ladder further comprises a support mechanism;

[0022] The first plate surface of the second plate is provided with a limiting groove, and the first plate surface is the side opposite to the plate surface where the anti-slip component is provided;

[0023] The support mechanism includes a third plate, and the third plate is movably connected to the first position of the ladder body;

[0024] The distance between the first position and the first end of the ladder body is greater than the distance between the first position and the second end of the ladder body, and the size of the limiting groove matches the size of the third plate.

[0025] Optionally, the third plate is a hollow structure, and a reinforcement strip is provided in the hollow structure;

[0026] The reinforcement strips include first reinforcement strips and second reinforcement strips, and the first reinforcement strips and the second reinforcement strips are alternately arranged.

[0027] Optionally, a third pin is provided at one end of the third plate movably connected to the ladder body;

[0028] The ladder body is provided with a third pin seat at the first position;

[0029] The third pin rod is matched and connected with the third pin seat, so that the third plate can perform semicircular motion with the third pin seat as a fulcrum.

[0030] Optionally, the ladder body includes a first vertical rod and a second vertical rod arranged in parallel with each other, and a plurality of cross rods vertically fixed between the first vertical rod and the second vertical rod;

[0031] The first vertical rod and the second vertical rod are provided with anti-slip pads at one end close to the anti-slip mechanism.

[0032] Optionally, the plurality of cross bars are all provided with anti-slip grooves.

[0033] In the present invention, a ladder comprises: a ladder body, a fastening mechanism, and an anti-slip mechanism; the fastening mechanism comprises a first plate and a fastening component, the first plate being movably connected to a first end of the ladder body, the fastening component being disposed on a surface of the first plate opposite to the ladder body, the first end of the ladder body being the end away from the ground; and the anti-slip mechanism comprises a second plate and an anti-slip component, the second plate being movably connected to a second end of the ladder body, the anti-slip component being disposed on a surface of the second plate facing the ground, the second end of the ladder body being the end closer to the ground. Therefore, with this structural arrangement, when the ladder is leaning against a pole at a predetermined angle to the horizontal plane, the first plate is perpendicular to the horizontal plane, the fastening component is used to secure the pole, and the second plate is parallel to the horizontal plane, and the anti-slip component is used to contact the ground to prevent the ladder body from sliding, thereby improving the stability of the ladder and reducing the risk of the ladder shaking or slipping during climbing, thereby improving the safety of the ladder.

[0034] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 A schematic structural diagram of a ladder provided in an embodiment of the present utility model;

[0037] Figure 2 This is a structural schematic diagram of the fastening mechanism provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] See Figures 1 to 2 ,in, Figure 1 This is a schematic structural diagram of a ladder provided by an embodiment of the present utility model. Figure 1 As shown, the ladder includes: a ladder body 10, a fastening mechanism 20 and an anti-slip mechanism 30;

[0040] The fastening mechanism 20 includes a first plate 21 and a fastening member 22. The first plate 21 is movably connected to the first end of the ladder body 10. The fastening member 22 is disposed on the surface of the first plate 21 opposite to the ladder body 10. The first end of the ladder body 10 is the end away from the ground.

[0041] The anti-slip mechanism 30 includes a second plate 31 and an anti-slip component 32. The second plate 31 is movably connected to the second end of the ladder body 10. The anti-slip component 32 is provided on the surface of the second plate 31 facing the ground. The second end of the ladder body 10 is the end closest to the ground.

[0042] In which, when the ladder is leaning against the pole at a preset angle with the horizontal plane, the first plate 21 is perpendicular to the horizontal plane, and the fastening component 22 is used to be fixed to the pole, the second plate 31 is parallel to the horizontal plane, and the anti-slip component 32 is used to contact the ground to prevent the ladder body 10 from sliding.

[0043] In this embodiment, the fastening mechanism 20 includes a first plate 21 and a fastening component 22. The first plate 21 is movably connected to the first end of the ladder body 10. The fastening component 22 is disposed on the surface of the first plate 21 facing the ladder body 10, with the first end of the ladder body 10 being the end away from the ground. The anti-slip mechanism 30 includes a second plate 31 and an anti-slip component 32. The second plate 31 is movably connected to the second end of the ladder body 10. The anti-slip component 32 is disposed on the surface of the second plate 31 facing the ground, with the second end of the ladder body 10 being the end closer to the ground. Therefore, with this structure, when the ladder is leaning against the pole at a predetermined angle to the horizontal plane, the first plate 21 is perpendicular to the horizontal plane, the fastening component 22 is used to secure the ladder to the pole, and the second plate 31 is parallel to the horizontal plane, and the anti-slip component 32 is used to contact the ground to prevent the ladder body 10 from sliding, thereby improving the stability of the ladder and reducing the risk of the ladder shaking and slipping during climbing, thereby improving the safety of the ladder.

[0044] It should be understood that relevant personnel can adjust the setting angle and setting position of the above-mentioned ladder according to actual working conditions. Therefore, the first plate 21 and the second plate 31 need to be movably connected to the ladder body 10. There are many ways to adopt the movable connection. For example, the first end and the second end of the ladder body 10 can be provided with a sleeve component to ensure that the first plate 21 and the second plate 31 can rotate. This is not limited to the embodiment of the present invention.

[0045] It should be noted that the fastening component 22 is a component used to fasten the ladder body 10 to the utility pole. Considering that the utility pole is cylindrical, the fastening component 22 can be set as a circular fastener, that is, the circular fastener is sleeved on the cylindrical utility pole to achieve the fastening effect. Of course, the fastening component 22 can also be set as a clamp-shaped structure, that is, the cylindrical utility pole is tightened by the fastening component 22, which is not limited to this embodiment of the utility model.

[0046] In addition, the anti-slip component 32 is a component used to prevent the ladder body 10 from sliding. Since the anti-slip component 32 is in direct contact with the ground, the anti-slip component 32 can be understood as a component that increases the friction between the above-mentioned ladder and the ground. Usually, in order to achieve the above-mentioned purpose, the anti-slip component 32 can be set as a protruding point structure in the area, or a grabbing nail structure. Relevant personnel can select a suitable anti-slip structure according to actual needs and working conditions, and the embodiments of the present utility model are not limited to this.

[0047] Optionally, the fastening component 22 includes a first bent plate 221, a second bent plate 222, a guide rod 223, a bidirectional screw rod 224 and a motor 225;

[0048] The first plate 21 is provided with an avoidance groove and a chute, the motor 225 is fixedly installed in the avoidance groove, the first bent plate 221 is slidably disposed in the chute, the second bent plate 222 is slidably disposed in the chute, and the first bent plate 221 and the second bent plate 222 are disposed opposite to each other;

[0049] The first bent plate 221 defines a first threaded hole and a first guide hole, the second bent plate 222 defines a second threaded hole and a second guide hole, a bidirectional screw rod 224 passes through the first threaded hole and the second threaded hole respectively, and a first end of the bidirectional screw rod 224 is matched and connected to the motor 225;

[0050] The first end of the guide rod 223 passes through the first guide hole, and the second end of the guide rod 223 passes through the second guide hole.

[0051] In this embodiment, the fastening component 22 may include a first bent plate 221, a second bent plate 222, a guide rod 223, a bidirectional screw rod 224 and a motor 225, wherein the first bent plate 221 and the second bent plate 222 are arranged relative to each other, that is, the figure surrounded by the first bent plate 221 and the second bent plate 222 is close to a circle, so that the cylindrical electric pole can be tightly clamped. In addition, the guide rod 223 is provided to stabilize the movement stability of the first bent plate 221 and the second bent plate 222 under the control of the motor. In addition to improving stability, the bidirectional screw rod 224 is mainly used to drive the first bent plate 221 and the second bent plate 222 to translate in the horizontal direction under the input of the motor. Through the setting of this structure, the above-mentioned ladder can be fastened to the electric pole, and a better fastening effect can be achieved through the drive of the motor, thereby improving the stability and safety of the above-mentioned ladder.

[0052] It should be noted that in order to further improve the fastening effect on the utility pole, anti-slip parts can be set on the inner sides of the first bent plate 221 and the second bent plate 222 to increase the friction with the utility pole, resulting in the fastening component 22 and the utility pole not being easy to slide. The utility model does not limit the choice of anti-slip parts.

[0053] In addition, in order to improve the stability of the first curved plate 221 and the second curved plate 222 during translation, the number of guide rods 223 can be increased, and similarly, the number of guide holes also needs to be increased accordingly.

[0054] It should be taken into account that there are two movement modes for the first bent plate 221 and the second bent plate 222, one is a movement mode from both sides to the middle, and the other is a movement mode from the middle to both sides. Therefore, for utility poles of different sizes, the ladder provided in the embodiment of the present invention can complete the tightening work of the utility poles.

[0055] Optionally, a first pin 40 is provided at one end of the first plate 21 that is movably connected to the ladder body 10, and a first pin seat 50 is provided at one end of the ladder body 10 that is close to the fastening mechanism 20;

[0056] The first pin rod 40 is matched and connected with the first pin seat 50 , so that the first plate 21 can perform circular motion with the first pin seat 50 as a fulcrum.

[0057] In this embodiment, the end of the first plate 21 that is movably connected to the ladder body 10 may be provided with a first pin 40. Simultaneously, a first pin holder 50 is provided at the end of the ladder body 10 proximal to the fastening mechanism 20. The first pin 40 is mated with the first pin holder 50, allowing the first plate 21 to perform circular motion with the first pin holder 50 as a fulcrum. This structural arrangement allows the first pin holder 50 to be designed in various shapes and sizes, depending on the application requirements, to accommodate different installation spaces and fixing requirements. For example, cylindrical and conical pin holders are two common types. These are secured in a reamed hole using a slight interference fit or utilizing the self-locking properties of the taper, respectively, to withstand certain loads and ensure positioning accuracy. This, in turn, enhances the flexibility of the first plate 21.

[0058] It should be noted that the first pin seat 50 can be configured as a structure integrated with the ladder body 10 , and the configuration of this structure can further improve the stability of the first pin seat 50 .

[0059] Optionally, the anti-slip component 32 includes a gripping spike assembly;

[0060] The nail assemblies are evenly arranged on the surface of the second plate 31 facing the ground.

[0061] In this embodiment, the anti-slip component 32 can be the above-mentioned gripping nail assembly, and the above-mentioned gripping nail assembly is evenly arranged on the board surface facing the ground in the second plate 31. By evenly arranging the above-mentioned gripping nail assembly on the board surface facing the ground in the second plate 31, the friction between the second plate 31 and the ground can be increased, thereby enhancing the anti-slip ability of the above-mentioned ladder.

[0062] It should be noted that the grab nail is a special tool designed for fastening and connecting various materials, with the following characteristics:

[0063] 1. Strong gripping force: The special design of the gripping nails enables them to firmly grasp various materials, thereby effectively fixing and connecting them;

[0064] 2. Various types: There are many types of grab nails, including V-type grab nails and Y-type grab nails, each type has its own specific application range;

[0065] 3. Easy to operate: The use of the nail is simple and easy to understand, and does not require special skills or tools, so the fixing and connection tasks can be completed quickly;

[0066] 4. High reliability: Due to the special design and material selection of the gripping nails, they have high reliability and long life, which can ensure the long-term stability and safety of the connection.

[0067] Optionally, a second pin 60 is provided at one end of the second plate 31 that is movably connected to the ladder body 10;

[0068] A second pin seat 70 is provided at one end of the ladder body 10 close to the anti-slip mechanism 30;

[0069] The second pin rod 60 is matched and connected with the second pin seat 70 , so that the second plate 31 can perform circular motion with the second pin seat 70 as a fulcrum.

[0070] In this embodiment, the end of the second plate 31 that is movably connected to the ladder body 10 may be provided with a second pin 60. Simultaneously, a second pin holder 70 is provided on the end of the ladder body 10 proximal to the anti-slip mechanism 30. The second pin 60 is mated with the second pin holder 70, allowing the second plate 31 to perform circular motion with the second pin holder 70 as a fulcrum. This structural arrangement allows the second pin holder 70 to be designed in various shapes and sizes, depending on the application requirements, to accommodate different installation spaces and fixing requirements. For example, cylindrical and conical pin holders are two common types. These are secured in a reamed hole using a slight interference fit or utilizing the self-locking properties of the taper, respectively, to withstand certain loads and ensure positioning accuracy. This enhances the flexibility of the second plate 31.

[0071] It should be noted that the second pin seat 70 can be configured as a structure integrated with the ladder body 10, and the configuration of this structure can further improve the stability of the second pin seat 70.

[0072] Optionally, the ladder further includes a support mechanism 80;

[0073] The first plate surface of the second plate 31 is provided with a limiting groove, and the first plate surface is the side opposite to the plate surface where the anti-slip component 32 is provided;

[0074] The support mechanism 80 includes a third plate 81 , which is movably connected to the first position of the ladder body 10 ;

[0075] The distance between the first position and the first end of the ladder body 10 is greater than the distance between the first position and the second end of the ladder body 10 , and the size of the limiting groove matches the size of the third plate 81 .

[0076] In this embodiment, the above-mentioned ladder may also include a supporting mechanism 80. Considering the stability of the triangle, in this embodiment, it is considered that the cross-section of the third plate 81, the ladder body 10 and the second plate 31 forms a triangle, thereby improving the overall stability of the above-mentioned ladder, wherein one end of the third plate 81 is movably connected to the first position of the ladder body 10, and the other end is clamped in the above-mentioned limiting groove. Through the setting of this structure, the cross-section of the third plate 81, the ladder body 10 and the second plate 31 forms a triangle, thereby improving the overall stability of the above-mentioned ladder.

[0077] It should be noted that the size of the third plate 81 needs to be limited to ensure the normal switching of the angle between the ladder and the horizontal.

[0078] Optionally, the third plate 81 is a hollow structure, and a reinforcement strip 82 is provided in the hollow structure;

[0079] The reinforcement strips 81 include first reinforcement strips and second reinforcement strips, and the first reinforcement strips and the second reinforcement strips are alternately arranged.

[0080] In this embodiment, in order to improve the overall stability of the third plate 81, in this embodiment, the third plate 81 is set to a hollow structure, and a reinforcement strip 82 is provided in the above hollow structure. At the same time, the above first reinforcement strip and the above second reinforcement strip are alternately arranged to form a plurality of triangular structures to improve the stability of the third plate 81.

[0081] It should be noted that the number of the reinforcement bars 82 can be set according to the actual load or demand of the ladder, and this embodiment of the utility model does not limit this.

[0082] Optionally, a third pin 91 is provided at one end of the third plate 81 that is movably connected to the ladder body 10;

[0083] The ladder body 10 is provided with a third pin seat 92 at the first position;

[0084] The third pin rod 91 is matched and connected with the third pin seat 92 , so that the third plate 81 can perform semicircular motion with the third pin seat 92 as a fulcrum.

[0085] In this embodiment, one end of the third plate 81 that is movably connected to the ladder body 10 may be provided with a third pin 91. Simultaneously, the ladder body 10 is provided with a third pin holder 92 at the first position. The third pin 91 is mated and connected to the third pin holder 92, allowing the third plate 81 to perform circular motion with the third pin holder 92 as a fulcrum. This structural arrangement allows the third pin holder 92 to be designed in various shapes and sizes, depending on the application requirements, to accommodate different installation spaces and fixing requirements. For example, cylindrical and conical pin holders are two common types. These are respectively secured in a reamed hole with a slight interference fit or secured by the self-locking nature of the taper, to withstand certain loads and ensure positioning accuracy. This enhances the flexibility of the third plate 81.

[0086] It should be noted that the third pin seat 92 can be configured as a structure integrated with the ladder body 10. The configuration of this structure can further improve the stability of the third pin seat 92.

[0087] Optionally, the ladder body 10 includes a first vertical rod and a second vertical rod arranged in parallel with each other, and a plurality of cross rods vertically fixed between the first vertical rod and the second vertical rod;

[0088] The first vertical rod and the second vertical rod are provided with anti-slip pads at one end close to the anti-slip mechanism.

[0089] Optionally, the plurality of cross bars are all provided with anti-slip grooves.

[0090] In this embodiment, the first vertical rod and the second vertical rod are provided with anti-slip pads at one end close to the anti-slip mechanism 30. Because the first vertical rod and the second vertical rod are in contact with the ground at one end close to the anti-slip mechanism 30, the provision of the anti-slip pads can effectively increase the friction between the ladder body 10 and the ground, reducing sliding. In addition, the above-mentioned several horizontal rods are provided with anti-slip grooves. Through the setting of this structure, the friction between the horizontal rods and the soles of the staff's shoes can be increased, thereby improving the safety of the staff in the working state.

[0091] It should be noted that the pattern, size and shape of the anti-slip pad and the anti-slip pattern can be set according to actual needs, and the embodiments of the present invention are not limited to this.

[0092] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this utility model can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution disclosed in this utility model can be achieved. This is not limited herein.

[0093] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A ladder, applied to an electric pole, characterized in that: include: Ladder body, fastening mechanism and anti-slip mechanism; The fastening mechanism comprises a first plate and a fastening component, wherein the first plate is movably connected to the first end of the ladder body, and the fastening component is arranged on the plate surface of the first plate relative to the ladder body, and the first end of the ladder body is an end away from the ground; The anti-slip mechanism comprises a second plate and an anti-slip component, wherein the second plate is movably connected to the second end of the ladder body, and the anti-slip component is arranged on the plate surface of the second plate facing the ground, and the second end of the ladder body is an end close to the ground; Wherein, when the ladder is leaning against the pole at a preset angle with the horizontal plane, the first plate is perpendicular to the horizontal plane, and the fastening component is used to be fixed to the pole, the second plate is parallel to the horizontal plane, and the anti-slip component is used to contact the ground to prevent the ladder body from sliding.

2. The ladder according to claim 1, characterized in that: The fastening component includes a first bent plate, a second bent plate, a guide rod, a bidirectional screw rod and a motor; The first plate is provided with an avoidance groove and a slide groove, the motor is fixedly installed in the avoidance groove, the first bent plate is slidably arranged in the slide groove, the second bent plate is slidably arranged in the slide groove, and the first bent plate and the second bent plate are arranged opposite to each other; The first bent plate is provided with a first threaded hole and a first guide hole, the second bent plate is provided with a second threaded hole and a second guide hole, the bidirectional screw rod passes through the first threaded hole and the second threaded hole respectively, and the first end of the bidirectional screw rod is matched and connected with the motor; The first end of the guide rod passes through the first guide hole, and the second end of the guide rod passes through the second guide hole.

3. The ladder according to claim 2, characterized in that: A first pin is provided at one end of the first plate movably connected to the ladder body, and a first pin seat is provided at one end of the ladder body close to the fastening mechanism; The first pin rod is matched and connected with the first pin seat so that the first plate can perform circular motion with the first pin seat as a fulcrum.

4. The ladder according to claim 3, characterized in that: The anti-slip component includes a gripping spike assembly; The nail grabbing assemblies are evenly arranged on the board surface facing the ground in the second board.

5. The ladder according to claim 4, characterized in that: A second pin is provided at one end of the second plate movably connected to the ladder body; A second pin seat is provided at one end of the ladder body close to the anti-slip mechanism; The second pin rod is matched and connected with the second pin seat so that the second plate can perform circular motion with the second pin seat as a fulcrum.

6. The ladder according to claim 2, characterized in that: The ladder also includes a supporting mechanism; The first board surface of the second plate is provided with a limiting groove, and the first board surface is a side opposite to the board surface where the anti-slip component is provided; The support mechanism includes a third plate, and the third plate is movably connected to the first position of the ladder body; Wherein, the distance between the first position and the first end of the ladder body is greater than the distance between the first position and the second end of the ladder body, and the size of the limiting groove matches the size of the third plate.

7. The ladder according to claim 6, characterized in that: The third plate is a hollow structure, and a reinforcement strip is arranged in the hollow structure; The reinforcement strips include first reinforcement strips and second reinforcement strips, and the first reinforcement strips and the second reinforcement strips are alternately arranged.

8. The ladder according to claim 7, characterized in that: A third pin is provided at one end of the third plate movably connected to the ladder body; The ladder body is provided with a third pin seat at the first position; The third pin rod is matched and connected with the third pin seat so that the third plate can perform semicircular motion with the third pin seat as a fulcrum.

9. The ladder according to claim 1, characterized in that: The ladder body comprises a first vertical rod and a second vertical rod arranged in parallel with each other and a plurality of cross rods vertically fixed between the first vertical rod and the second vertical rod; The first vertical rod and the second vertical rod are provided with anti-skid pads at one end close to the anti-skid mechanism.

10. The ladder according to claim 9, characterized in that: The plurality of cross bars are all provided with anti-slip grooves.

Images