Pulley type climbing ladder for lifting photovoltaic panel

Abstract

The utility model particularly relates to the technical field of photovoltaic panel crawling ladders, and discloses a pulley type lifting photovoltaic panel crawling ladder which comprises a fixed frame and a movable frame connected to the surface of the fixed frame in a sliding mode, the inner top end of the fixed frame is symmetrically and rotationally connected with two second pulleys, and the inner top end, close to the second pulleys, of the fixed frame is rotationally connected with two third pulleys. A limiting plate is fixedly arranged on the surface of the movable frame, and two first pulleys are symmetrically and rotationally connected to the inner bottom end of the movable frame. Through the arrangement of the fixed frame, the movable frame, the first pulley, the second pulley, the third pulley, the cables, the fourth pulley and the limiting plate, the limiting plate is L-shaped so that the photovoltaic panel can be conveniently supported, an operator pulls the two cables at the same time, and the cables can be driven to slide and contract on the outer surfaces of the second pulley, the fourth pulley and the third pulley in sequence; thus, the movable frame is driven to move upwards along the fixed frame, the photovoltaic panel can be conveniently carried to a high place to be replaced, and the replacement and maintenance efficiency of the photovoltaic panel is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic panel ladders, and particularly relates to a pulley-type lifting photovoltaic panel ladder. Background Art

[0002] A photovoltaic panel, also known as a solar panel, is a device used to convert solar energy into electrical energy. The semiconductor materials used for photovoltaic panels to generate electricity mainly include: monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, etc. In recent years, as countries around the world have been actively promoting the application of renewable energy, the photovoltaic industry has developed very rapidly. Photovoltaic panels are usually supported by diagonal braces. After long-term use, maintenance personnel need to use a ladder to replace and maintain the photovoltaic panels.

[0003] When the existing photovoltaic panel ladder is in use, due to the high installation position and large self-weight of the photovoltaic panel, when replacing the topmost photovoltaic panel, multiple people are required to cooperate, resulting in low work efficiency of photovoltaic panel replacement and maintenance, thus affecting the efficiency of photovoltaic panel replacement and maintenance. At the same time, it is easy to damage the photovoltaic panel components during the handling process. Summary of the Utility Model

[0004] The utility model provides a pulley-type lifting photovoltaic panel ladder, aiming to solve the problem that when the existing photovoltaic panel ladder is in use, due to the high installation position and large self-weight of the photovoltaic panel, when replacing the topmost photovoltaic panel, multiple people are required to cooperate, resulting in low work efficiency of photovoltaic panel replacement and maintenance, thus affecting the efficiency of photovoltaic panel replacement and maintenance. At the same time, it is easy to damage the photovoltaic panel components during the handling process.

[0005] The utility model is realized as follows: The pulley-type lifting photovoltaic panel ladder includes a fixed frame and a movable frame slidably connected to the surface of the fixed frame. Two pulleys II are symmetrically and rotatably connected to the inner top end of the fixed frame. Two pulleys III are rotatably connected to the inner top end of the fixed frame near the pulleys II. A limiting plate is fixedly arranged on the surface of the movable frame. Two pulleys I are symmetrically and rotatably connected to the inner bottom end of the movable frame. Two pulleys IV are symmetrically rotatably connected to the inner bottom end of the movable frame near the pulleys I. Cables are tied to the surfaces of the two pulleys I. The cables are sequentially wound around the outer surfaces of the pulleys II, IV, and III. The other ends of the cables penetrate between the fixed frame and the movable frame and are tied together.

[0006] Preferably, a number of cross bars II are fixedly connected to the inner side wall of the fixed frame. The two ends of the cross bars II are sequentially fixedly connected to the fixed frame to form an integral structure, improving the overall stability of the fixed frame.

[0007] Preferably, two convex blocks are symmetrically fixedly arranged at the end of the fixed frame. The convex blocks and the fixed frame are made of aluminum alloy and are fixedly connected to form an integral structure, improving the installation stability of the fixed frame.

[0008] Preferably, two limiting grooves are symmetrically formed on the surface of the fixing frame close to the movable frame. Two sliding blocks are symmetrically and fixedly arranged at the bottom end of the movable frame. Both of the two sliding blocks are in a convex shape, and the external dimensions of the sliding blocks are adapted to the internal dimensions of the fixing frame, improving the sliding stability of the movable frame.

[0009] Preferably, two first cross bars are symmetrically and fixedly arranged on the inner side wall of the movable frame close to the fourth pulley. The two first cross bars and the movable frame are integrally formed by fixedly connecting aluminum alloy materials. The surface of the first cross bar is flush with the surface of the movable frame, improving the supporting stability of the photovoltaic panel.

[0010] Preferably, two clamps are symmetrically and fixedly arranged at the bottom end of the movable frame. Both of the two clamps are in a semi-circular ring shape for the cable to be inserted. The external dimensions of the cable are adapted to the internal dimensions of the clamps, improving the sliding stability of the cable.

[0011] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0012] Firstly, by providing a fixing frame, a movable frame, a first pulley, a second pulley, a third pulley, a cable, a fourth pulley and a limiting plate, the L-shaped limiting plate is convenient for supporting the photovoltaic panel. The operator simultaneously pulls two cables, which can drive the cables to slide and contract on the outer surfaces of the second pulley, the fourth pulley and the third pulley in sequence, thereby driving the movable frame to move upward along the fixing frame, facilitating the replacement of the photovoltaic panel at a high place, and improving the efficiency of replacing and maintaining the photovoltaic panel. Secondly, by providing limiting grooves and sliding blocks, the two sliding blocks are in a convex shape and are integrally formed with the movable frame. The external dimensions of the sliding blocks are adapted to the internal dimensions of the limiting grooves, thereby improving the sliding stability of the surface of the movable frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view three-dimensional structural schematic diagram of the present utility model.

[0014] Figure 2 It is a side view three-dimensional structural schematic diagram of the movable frame of the present utility model.

[0015] Figure 3 It is a side view three-dimensional structural schematic diagram of the fixing frame of the present utility model.

[0016] Figure 4 It is a sectional installation structural schematic diagram of the present utility model.

[0017] The reference numerals are: 1, fixing frame; 2, movable frame; 3, first pulley; 4, second pulley; 5, third pulley; 6, limiting groove; 7, cable; 8, fourth pulley; 9, limiting plate; 10, first cross bar; 11, clamp; 12, sliding block; 13, convex block; 14, second cross bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0019] References herein to "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0020] Please refer to Figures 1-4, the embodiments provided by the present utility model: a pulley - type lifting ladder for a photovoltaic panel, including a fixed frame 1 and a movable frame 2 slidably connected to the surface of the fixed frame 1. A number of second cross - bars 14 are fixedly connected to the inner side wall of the fixed frame 1. The two ends of the second cross - bar 14 are fixedly connected to the fixed frame 1 in sequence to form an integral structure, improving the overall stability of the fixed frame 1. Two convex blocks 13 are symmetrically and fixedly provided at the end of the fixed frame 1. Both the convex block 13 and the fixed frame 1 are made of aluminum alloy and fixedly connected to form an integral structure. The convex block 13 is used for clamping and limiting, improving the installation stability at the top of the fixed frame 1. Two second pulleys 4 are symmetrically and rotatably connected to the inner top of the fixed frame 1. Two third pulleys 5 are rotatably connected to the inner top of the fixed frame 1 near the second pulley 4. A limiting plate 9 is fixedly provided on the surface of the movable frame 2. The limiting plate 9 is L - shaped and is used to support the bottom end of the photovoltaic panel placed on the surface of the movable frame 2. Two first pulleys 3 are symmetrically and rotatably connected to the inner bottom end of the movable frame 2. Two fourth pulleys 8 are symmetrically and rotatably connected to the inner bottom end of the movable frame 2 near the first pulley 3. Two first cross - bars 10 are symmetrically and fixedly provided on the inner side wall of the movable frame 2 near the fourth pulley 8. Both the two first cross - bars 10 and the movable frame 2 are made of aluminum alloy and fixedly connected to form an integral structure. The surface of the first cross - bar 10 is flush with the surface of the movable frame 2, increasing the contact area between the bottom end of the photovoltaic panel and the movable frame 2 and improving the support stability of the photovoltaic panel. Cables 7 are tied to the surfaces of both the two first pulleys 3. The cable 7 is wound around the outer surfaces of the second pulley 4, the fourth pulley 8, and the third pulley 5 in sequence. The other end of the cable 7 passes through the space between the fixed frame 1 and the movable frame 2 and is tied together. When an operator simultaneously pulls down the two cables 7, the fourth pulley 8 rotates, thereby shortening the length of the cable 7 wound around the first pulley 3, the second pulley 4, the fourth pulley 8, and the third pulley 5 in sequence, and driving the movable frame 2 to move upward along the fixed frame 1, thus moving the photovoltaic panel clamped on the surface of the movable frame 2 upward, improving the efficiency and safety of photovoltaic panel handling during the photovoltaic panel replacement process, and thus improving the efficiency of photovoltaic panel replacement and maintenance.

[0021] Two limiting grooves 6 are symmetrically formed on the surface of the fixed frame 1 near the movable frame 2. Two sliding blocks 12 are symmetrically and fixedly provided at the bottom end of the movable frame 2. Both the two sliding blocks 12 are convex - shaped. The outer dimensions of the sliding blocks 12 are all adapted to the inner dimensions of the fixed frame 1, improving the sliding stability of the movable frame 2.

[0022] Two clamps 11 are symmetrically and fixedly provided at the bottom end of the movable frame 2. Both the two clamps 11 are semi - circular rings for the cable 7 to be inserted. The outer dimensions of the cable 7 are all adapted to the inner dimensions of the clamps 11, improving the sliding stability of the cable 7.

[0023] Working principle: When this pulley - type lifting ladder for photovoltaic panels is in use, the operator first places the photovoltaic panel to be replaced flat on the surface of the movable frame 2. The limiting plate 9 is L - shaped, and the internal dimensions of the limiting plate 9 are adapted to the external dimensions of the photovoltaic panel, thus improving the stability of the bottom support of the photovoltaic panel and preventing the photovoltaic panel from slipping off the surface of the movable frame 2. The operator simultaneously pulls two cables 7, which can drive the cables 7 to slide and contract successively on the outer surfaces of the second pulley 4, the fourth pulley 8, and the third pulley 5, thereby driving the movable frame 2 to move upward along the fixed frame 1, facilitating the handling of the photovoltaic panel to a high position of the diagonal support bracket. The diagonal support bracket is a device for supporting the photovoltaic panel, which is an existing technology and will not be elaborated here. This improves the efficiency and safety of photovoltaic panel handling during the replacement process, thereby enhancing the efficiency of photovoltaic panel replacement and maintenance.

[0024] Secondly, the external dimensions of the slider 12 are adapted to the internal dimensions of the limiting groove 6. The slider 12 is successively slidably connected inside the limiting groove 6, improving the stability of the surface sliding of the movable frame 2.

[0025] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0026] In several embodiments provided by this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above - described division of units can be implemented in other ways in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the shown or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0027] The units described as separate components above may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0028] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the utility model. Obviously, the described embodiments are only partial embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present utility model according to the circumstances, or make other adjustments, so as to obtain different technical solutions that essentially do not depart from the concept of the present utility model, and these technical solutions also fall within the scope of protection of the present utility model.

Claims

1. The pulley-type lifting photovoltaic panel ladder is characterized in that It includes a fixed frame (1) and a movable frame (2) slidably connected to the surface of the fixed frame (1): At the inner top end of the fixed frame (1), two pulleys two (4) are symmetrically and rotatably connected. At the inner top end of the fixed frame (1) near the pulleys two (4), two pulleys three (5) are rotatably connected. A limiting plate (9) is fixedly arranged on the surface of the movable frame (2). At the inner bottom end of the movable frame (2), two pulleys one (3) are symmetrically and rotatably connected. At the inner bottom end of the movable frame (2) near the pulleys one (3), two pulleys four (8) are symmetrically and rotatably connected. Cables (7) are tied to the surfaces of both of the two pulleys one (3). The cables (7) are sequentially wound around the outer surfaces of the pulleys two (4), the pulleys four (8) and the pulleys three (5). The other ends of the cables (7) penetrate between the fixed frame (1) and the movable frame (2) and are tied together.

2. The pulley-type lifting photovoltaic panel ladder according to claim 1, wherein: A number of cross bars two (14) are fixedly connected to the inner side wall of the fixed frame (1). The two ends of the cross bars two (14) are sequentially fixedly connected to the fixed frame (1) to form an integral structure.

3. The pulley-type lifting photovoltaic panel ladder according to claim 2, wherein: Two bumps (13) are symmetrically and fixedly arranged at the end of the fixed frame (1). The bumps (13) and the fixed frame (1) are both made of aluminum alloy and fixedly connected to form an integral structure.

4. The pulley-type lifting ladder for a photovoltaic panel according to claim 3, wherein: Two limiting grooves (6) are symmetrically formed on the surface of the fixed frame (1) near the movable frame (2). Two sliders (12) are symmetrically and fixedly arranged at the bottom end of the movable frame (2). Both of the two sliders (12) are convex-shaped. The outer dimensions of the sliders (12) are all adapted to the inner dimensions of the fixed frame (1).

5. The pulley-type lifting ladder for photovoltaic panels according to claim 1, characterized in that: Two cross bars one (10) are symmetrically and fixedly arranged on the inner side wall of the movable frame (2) near the pulleys four (8). The two cross bars one (10) and the movable frame (2) are both made of aluminum alloy and fixedly connected to form an integral structure. The surface of the cross bars one (10) is flush with the surface of the movable frame (2).

6. The pulley-type lifting photovoltaic panel ladder according to claim 1, wherein: Two clamps (11) are symmetrically and fixedly arranged at the bottom end of the movable frame (2). Both of the two clamps (11) are semi-circular for the cables (7) to be inserted. The outer dimensions of the cables (7) are all adapted to the inner dimensions of the clamps (11).

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