Workbench on solar cell module

Abstract

To provide a safe and easy-to-use workbench on a solar cell module, capable of dealing with the angle of an inclined stand of the solar cell module without requiring angle adjustment each time with one workbench.SOLUTION: A workbench is configured to be installed on a solar cell module P mounted on an inclined stand Q. It is configured in a ladder shape with left and right support members 10 and a plurality of treads 20 fixed between the support members 10. The treads 20 are plate-shaped with their plate surfaces inclined forward and backward relative to the longitudinal direction of the support members 10. The plate surfaces of the treads 20 are configured so that both the front and back sides can be used as stepping surfaces, and the entire support members 10 can be flipped over. The angle of inclination differs between the front and back sides of the treads 20. The support members 10 are provided with an elastic protector 30 detachably attached to the placement surface side where they are installed along the slope.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a work platform for solar cell modules that allows work to be done safely on inclined solar cell modules. [Background technology]

[0002] Currently, when performing maintenance on tilted solar cell modules, workers must step on the frame with shoes that have good grip, which poses the risk of workers falling and panels being damaged. Scaffolding that can be installed on such solar cell modules is described in Patent Documents 1 to 3.

[0003] The roof scaffolding described in Patent Document 1 has a panel hook 40 provided on the scaffolding body 20 to improve the ease of installation of the roof scaffolding. The panel hook 40 is configured to be able to switch between a position where it protrudes from the scaffolding body 20 and a position where it does not protrude, depending on the site.

[0004] The roof scaffolding described in Patent Document 2 is designed to prevent the roof scaffolding installed on the solar cell modules from being blown away by wind force. That is, it is configured so that the ridge side end of the eaves side solar energy collecting panel 200L and the eaves side end of the ridge side solar energy collecting panel 200U are clamped from above and below by the gripping part 51 and the plate-shaped head part 52.

[0005] The scaffolding described in Patent Document 3 is provided with a first guide roller 8 and a second guide roller 9 in order to make it easy to change the position of the scaffolding. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6514517 [Patent Document 2] Patent No. 6343414 [Patent Document 3] Japanese Patent Application Publication No. 2020-23848 Summary of the Invention [Problem to be solved by the invention]

[0007] These conventional workbenches, even though they are used for maintaining solar cell modules, were not designed to accommodate the different tilt angles of the solar cell modules. In other words, the tilted mount on which the solar cell modules are installed changes angle depending on the installation conditions. Depending on this angle and installation conditions, the solar cell modules may be placed at a height of more than 2 meters, posing a risk of workers falling and panels being damaged.

[0008] In such cases, a general-purpose workbench with adjustable angle may be used, but such workbenches have many parts and are bulky, making them inconvenient to transport and requiring the effort of adjusting the angle when in use.

[0009] Furthermore, since the angle of the solar cell modules varies depending on the site, if multiple work tables are prepared to accommodate different angles, maintenance work will require a lot of effort.

[0010] Therefore, the present invention was created to solve the above-mentioned problems, and aims to provide a safe and easy-to-use work platform for solar cell modules that can accommodate the angle of the inclined mount of the solar cell module with a single work platform. [Means for solving the problem]

[0011] The first means of the present invention to achieve the above-mentioned object is a workbench that is installed on an inclined solar cell module P, and that is shaped like a ladder with left and right supports 10 that are installed along the slope of the solar cell module P and multiple treads 20 fixed between the supports 10, and the treads 20 are plate-shaped with their plate surfaces inclined up and down relative to the horizontal support 10, and the front and back surfaces of the treads 20 are used as stepping surfaces so that the entire support 10 can be flipped over, and the angle of inclination of the treads 20 changes depending on which front and back surface is used, and elastic protectors 30 are detachably attached to the support surface side that is placed on the solar cell module P.

[0012] The step bar 20 of the second means has a trapezoidal side surface, and the inclination angles of the front and back surfaces are set to correspond to the oblique angle of the solar cell module P of 10 to 30 degrees.

[0013] The support material 10 of the third means has a plurality of connection holes 13 along the longitudinal side surface, and is configured so that the elastic protector 30 is connected to the connection holes 13 corresponding to the size of the solar cell module P.

[0014] The elastic protector 30 of the fourth means is formed by incorporating a core metal fitting 32 inside an elastic material 31, and has a shape that can be locked onto the upper and lower ends of the solar cell module P.

[0015] The fifth means is a ladder-shaped work platform made up of a pair of left and right long support members 10 and a plurality of treads 20 fixed between the support members 10, and the treads 20 are plate-shaped with their plate surfaces inclined up and down relative to the horizontal support member 10, and the front and back surfaces of the treads 20 are configured to be tread surfaces so that the entire support member 10 can be freely inverted, and the inclination angle of the tread surfaces changes depending on which front and back surfaces are used.

[0016] The tread bar 20 of the sixth means is a plate-like member having a front and back surface that form the stepping surface, and the cross section of the plate-like member perpendicular to the longitudinal direction is trapezoidal, and the trapezoid corresponds to the front and back surfaces, and a pair of opposite sides that form the legs of the trapezoid form different angles with the upper and lower bases of the trapezoid, so that the inclination angle of the stepping surface changes depending on the front and back surfaces used.

[0017] The tread 20 of the seventh means has an inverted L-shape in which at least one of a pair of opposite sides forming the legs of the trapezoid is recessed toward the other opposite side.

[0018] The tread bar 20 of the eighth means is provided with a stepping control mechanism 24 on at least one of the front and back surfaces along the longitudinal direction of the front of the stepping surface to prevent the user's foot from stepping too far forward.

[0019] The ninth means is a fixing device for fixing a workbench on a solar cell module P, which is placed between the workbench and the solar cell module P and comprises an elastic material 31 and a core metal fitting 32, the elastic material 31 comprising a main body 31A on which the workbench is placed, a connecting piece 31B extending upward from the main body and connectable to the workbench by a bolt or the like, and a locking piece 31C extending downward from the main body 31A and locking to the end of the solar cell module P, and the fixing device incorporates the core metal fitting 32 which is integrally formed across the inside of the main body 31A, the connecting piece 31B, and the locking piece 31C.

[0020] The tenth feature is that the connecting piece 31B and the locking piece 31C are arranged at right angles to each other.

[0021] The eleventh means is a fixture having a claw-shaped piece 31D extending upward from the main body 31A on the side opposite the connecting piece 31B, the claw-shaped piece 31D being slightly inclined toward the connecting piece 31B. [Effects of the Invention]

[0022] The tread 20 of the present invention is in the form of a plate whose surface is inclined up and down relative to the horizontal support material 10, and the front and back surfaces of the tread 20 can be used as stepping surfaces so that it can be freely inverted together with the support material 10, and the angle of inclination can be changed depending on which front and back surface is used, thereby achieving the unique effect of being able to accommodate multiple angles of solar cell modules on a single workbench without having to make complex angle adjustments each time. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a perspective view showing an embodiment of the present invention; [Figure 2] 1 is a side cross-sectional view showing an embodiment of the present invention. [Figure 3] FIG. 2 is a side cross-sectional view showing the angles of the front and back surfaces of the tread of the present invention. [Figure 4] FIG. 1 is an exploded perspective view showing the protective equipment of the present invention in a worn state. [Figure 5] FIG. 2 is a perspective view showing a core metal fitting of the protector of the present invention. [Figure 6] (a) and (b) are side cross-sectional views showing the front and back surfaces of the tread bar in use. [Figure 7] FIG. 1 is a perspective view showing a state in which the present invention is used. DETAILED DESCRIPTION OF THE INVENTION

[0024] The workbench of the present invention is a workbench that is installed on a solar cell module P mounted on an inclined stand Q and used for maintenance, etc., and is ladder-shaped and consists of a support material 10, step bars 20, and elastic protective equipment 30 (see Figure 1).

[0025] The support material 10 is a pair of elongated members, one on each side, that are installed along the slope of the solar cell module P, and has multiple connecting holes 13 along the longitudinal side surfaces (see Figure 2). The connecting holes 13 are selected according to the size of the solar cell module P, and elastic protectors 30, described below, are detachably attached to the mounting surface of the support material 10 (see Figure 4). The illustrated support material 10 is composed of a long main body 11 that secures the treads 20, and ribs 12 formed by bending the longitudinal edge of the main body 11. A pair of connecting holes 13, through which U-shaped bolts 14 are inserted, are drilled in the main body 11, and the elastic protectors 30 are attached so as to surround the ribs 12.

[0026] The illustrated connecting holes 13 are provided in pairs near the longitudinal end of the installation surface of the support material 10 to connect U-shaped bolts 14 (see FIG. 2). The elastic protectors 30 attached to the upper end of the support material 10 along the slope are fixed with U-shaped bolts 14. At this time, the elastic protectors 30 attached to the lower end of the support material 10 are not fixed with U-shaped bolts 14 or temporarily fastened. These elastic protectors 30 are attached to the support material 10 according to the size of the solar cell module P and are installed as is (see FIG. 1). Furthermore, the U-shaped bolts 14 can be temporarily fastened to the unused connecting holes 13 when changing the position of the elastic protectors 30.

[0027] The treads 20 are multiple plate-like members fixed between the support members 10 (see Figure 1). The treads 20 are plate-like with their plate surfaces inclined up and down relative to the horizontal support members 10 (see Figure 2). The front and back surfaces of the treads 20 are used as stepping surfaces and can be freely inverted together with the support members 10 (see Figures 6(A) and (B)). The angle of inclination of the treads 20 changes depending on which front and back surfaces are used.

[0028] The illustrated example of the tread bar 20 shows a tread bar 20 with a plate thickness formed into a trapezoidal side (see Fig. 2). Anti-slip ribs 21 are formed on both sides of the tread bar 20 (see Fig. 1). The inclination angle of the front and back surfaces of the tread bar 20 corresponds to the inclination angle of the inclined mount Q that supports the solar cell module P, which is 10 to 30 degrees. That is, the plate surface of the tread bar 20 has a front surface inclined at 25 degrees with respect to the horizontal support material 10, and a back surface inclined at 15 degrees (see Fig. 3). Note that the inclination angles of the front and back surfaces of the tread bar 20 may be different, and the tread bar 20 may also be referred to as a trapezoid, even if its side surface is close to a triangle.

[0029] As a result, when the front side of the step bar 20 is used, the inclination angle of the tilted platform Q can be set to an angle of 20 to 30° (see Figure 6(A)), and when the back side is used, the inclination angle can be set to an angle of 10 to 20° (see Figure 6(B)). In either case, the inclination angle is less than ±5°, which is comfortable for work (see Table 1). Note that "array" in the table refers to a solar cell array. In this way, regardless of the inclination angle of the tilted platform Q between 10 and 30°, by selectively using the front and back sides of the step bar 20, an angle that is comfortable for work can be achieved. Note that the numerical values ​​used in the above explanation are merely examples for illustrative purposes, and since the inclination angle of the tilted platform Q can also be less than 10° or more than 30°, the angle of the front and back sides of the step bar 20 can be set as desired depending on the situation, not limited to the illustrated example.

[0030] [Table 1]

[0031] This tread bar 20 is fixed to the support material 10 by a through-bolt 22 that passes through the support material 10 and supports the tread bar 20, and a fixing nut 23 that is screwed onto one end of the through-bolt 22 (see FIG. 3). In the illustration, a pair of through-bolts 22 are arranged on the side of the tread bar 20. Note that the configuration of the tread bar 20 is not limited to the example shown in the illustration, and the material and structure can be changed as desired.

[0032] The elastic protector 30 is an elastic member that is attached to the mounting surface side of the support material 10 (see FIG. 4). This elastic protector 30 has a hook shape that engages with the upper and lower ends of the solar cell module P (see FIGS. 6(a) and 6(b)). The surface side of this elastic protector 30 is formed from an elastic material 31 such as rubber. A core metal fitting 32 is incorporated inside the elastic material 31 to ensure the strength of the elastic protector 30 (see FIG. 5). The material of the elastic protector 30 may be made of any hardness that does not damage the solar cell module, and may be made from a resin such as plastic.

[0033] The illustrated elastic protector 30 is fixed to the support material 10 with a U-shaped bolt 14 and a wing nut 15 (see FIG. 4). At this time, the connection strength of the elastic protector 30 is increased by a core metal fitting 32 incorporated inside the elastic material 31 (see FIG. 5). Furthermore, by arranging a core metal fitting 32 inside the hook-shaped portion that engages with the upper and lower ends of the solar cell module P, the engagement strength of the elastic protector 30 is also increased.

[0034] The shapes of the components of the present invention are not limited to the illustrated examples, and design changes are free to be made within the scope that does not change the gist of the support material 10, tread 20, and elastic protector 30 of the present invention. Furthermore, the use of the present invention is not limited to the solar cell module P, and it can also be used for other sloped roofs, etc.

[0035] The present invention also includes a ladder-shaped work platform that is made up of a pair of left and right elongated support members 10 and a plurality of treads 20 fixed between the support members 10, and the treads 20 form a plate-like work platform with the plate surface inclined up and down relative to the horizontal support members 10, and the front and back surfaces of the treads 20 can be used as tread surfaces so that the entire support member 10 can be freely inverted, and the inclination angle of the tread surface can be changed depending on which front and back surfaces are used (see Figure 1).

[0036] The tread bar 20 is a plate-like member with a front and back side that form the treading surface, and the cross section perpendicular to the longitudinal direction of the plate-like member is trapezoidal. The trapezoid may have a shape in which a pair of opposite sides that form the legs of the trapezoid, corresponding to the front and back sides, form different angles with the upper and lower bases of the trapezoid. If a plate-like member of this shape is used as the tread bar 20, the inclination angle of the treading surface can be changed depending on the front and back sides that are used.

[0037] At least one of the front and back surfaces forming the stepping surface of the tread bar 20 may be provided with a stepping control mechanism 24 along the longitudinal direction in front of the stepping surface to prevent the user's foot from stepping too far forward and coming into contact with the solar cell module P (see Figure 3).

[0038] The tread 20 may have a shape in which at least one of the pair of opposite sides forming the legs of the trapezoid is concave in an inverted L shape toward the other opposite side. When a plate-like member of this shape is used as the tread 20, it forms a stepping surface with an upward angled surface extending beyond the flat surface, and can function as a stepping control mechanism 24 that prevents the user's foot from stepping too far forward.

[0039] To put it another way, taking the tread 20 in Figure 6 as an example, the tread 20 is a plate-like member that is thick and has a front and back, and the first surface, which is one of the front and back surfaces, forms a rectangular plane, and the second surface, which is the other of the front and back surfaces, has two rectangular surfaces that are angled relative to the plane of the first surface, and these surfaces are joined on one side parallel to the longitudinal direction, and the joined side is concave toward the first surface, so that the cross section perpendicular to the longitudinal direction may be shaped like an inverted L.

[0040] In this case, if the first surface is placed on top, it will become a flat tread surface (see Figure 6(b)). If the second surface is placed on top, it will become a tread surface with an upward angled surface extending beyond the flat surface with a different inclination angle from the first surface (see Figure 6(a)). The first surface may also be formed by combining two rectangular surfaces on one side parallel to the longitudinal direction, with this combined side protruding toward the second surface, and the cross section perpendicular to the longitudinal direction may be shaped like an inverted L. In this case, whether the first surface or the second surface is placed on top, it will become a tread surface with an upward angled surface extending beyond the flat surface.

[0041] The depression control mechanism 24 is not limited to the triangular prism shape described above, and may be any shape as long as it can restrain the user's foot from depressing too far. Also, the entire depression surface may have an uneven shape with high frictional resistance, not just one end, or a sheet-like member with high frictional resistance may be installed.

[0042] In cases where the stepping surface is far from the solar cell module P surface or the inclination angle of the stepping surface is small, as in Figure 6 (b), and there is little possibility that the user's foot will step too far forward and come into contact with the solar cell module P surface, the stepping control mechanism 24 does not need to be provided.

[0043] The workbench in the above embodiment is one example of such a ladder-shaped workbench. This ladder-shaped workbench can be used on both sides to accommodate slopes with various gradients.

[0044] The present invention is a fixture for fixing a work table onto a solar cell module P, and includes a fixture that is disposed between the work table and the solar cell module P and is formed of an elastic material 31.

[0045] The elastic material 31 includes a main body 31A on which a workbench is placed, a connecting piece 31B extending upward from the main body 31A and connectable to the workbench with a bolt or the like, and a locking piece 31C extending downward from the main body 31A and locking onto an end of the solar cell module P (see FIG. 5).The elastic material 31 also includes a fixture in which a core metal fitting 32 is incorporated inside the main body 31A, the connecting piece 31B, and the locking piece 31C.

[0046] The connecting piece 31B and the locking piece 31C may be arranged at a right angle to each other. A claw-shaped piece 31D for firmly holding the workbench may be provided extending upward from the side of the main body 31A facing the connecting piece 31B on the surface on which the workbench is mounted. In the illustrated example, the claw-shaped piece 31D is slightly inclined toward the connecting piece 31B (see FIG. 5). This allows the workbench to be sandwiched between the connecting piece 31B and the claw-shaped piece 31D, making it possible to hold the workbench with a certain degree of strength without connecting it with bolts or the like.

[0047] The internal core metal fitting 32 is preferably an integrally formed plate-like member that is incorporated inside and spans at least the connecting piece 31B, the main body 31A, and the locking piece 31C, as shown in Figure 5. The core metal fitting 32 may have a plurality of holes formed therein, as shown in Figure 5. This allows the elastic material to enter the holes during the manufacturing process, connecting the elastic materials on both sides of the core metal fitting, and preventing the elastic material from floating away from the core metal fitting.

[0048] The elastic protector 30 of the above embodiment is one form of this fixture. With this fixture, the core metal fitting 32 increases the strength, so the workbench can be reliably fixed on the solar cell module P. [Explanation of symbols]

[0049] P Solar cell module Q Inclined stand 10 Support material 11 Main unit 12 Ribs 13 Connection hole 14 U-shaped bolt 15 Wing nut 20 Stepping Rail 21 Ribs 22 Through bolt 23 Fixing nut 24 Pedal control mechanism 30 Elastic protective equipment 31 Elastic material 31A main body 31B Connecting piece 31C Locking piece 31D Nail piece 32 Core metal fittings

Claims

1. A workbench to be installed on an inclined solar cell module, which is formed in a ladder shape with left and right support members installed along the slope of the solar cell module and multiple step bars fixed between the support members, The tread bar is formed in a plate shape with a plate surface that is inclined up and down relative to a horizontal support material, and the front and back surfaces of the tread bar are configured to be stepped on and can be freely inverted together with the support material, and the inclination angle of the tread bar changes depending on the front and back surfaces used. A workbench for solar cell modules, characterized in that the support member has an elastic protector detachably attached to the side of the support member where the solar cell module is placed.

2. 2. The work platform for a solar cell module according to claim 1, wherein the step bars have trapezoidal sides, and the inclination angles of the front and back surfaces are set to correspond to the inclination angle of the inclined base of 10 to 30 degrees.

3. The work bench for solar cell modules according to claim 1 , wherein the support member has a plurality of connection holes along the longitudinal side thereof, and the elastic protector is connected to the connection holes corresponding to the size of the solar cell module.

4. 2. The work bench for solar cell modules according to claim 1, wherein the elastic protector is formed by incorporating a core metal fitting inside an elastic material, and has a shape that can be engaged with the upper and lower ends of the solar cell module.

5. A ladder-shaped work platform is constructed from a pair of left and right long support members and a plurality of treads fixed between the support members, the treads being plate-shaped with their surfaces inclined up and down relative to the horizontal support members, the front and back surfaces of the treads being used as tread surfaces so that the entire support member can be freely inverted, and the inclination angle of the tread surface can be changed depending on which front and back surface is used.

6. A ladder-shaped workbench as described in claim 5, wherein the step bar is a plate-shaped member having a front and back surface that form the stepping surface, the cross section of the plate-shaped member perpendicular to the longitudinal direction is trapezoidal, the trapezoid corresponding to the front and back surfaces, and a pair of opposite sides that form the legs of the trapezoid form different angles with the upper and lower bases of the trapezoid, respectively, so that the inclination angle of the stepping surface changes depending on the front and back surfaces being used.

7. 7. A ladder-shaped work platform according to claim 6, wherein at least one of the pair of opposite sides that form the legs of the trapezoid has an inverted L-shape in which the opposite side is concave toward the other side.

8. A ladder-type work platform as described in claim 6, wherein the step bar is provided with a step control mechanism on at least one of the front and back surfaces, along the longitudinal direction in front of the stepping surface, to prevent the user's foot from stepping too far forward.

9. a fixture for fixing the work table on the solar cell module, the fixture being disposed between the work table and the solar cell module; The elastic member and the core metal fitting are provided. The elastic material is a main body on which the workbench is placed; a connecting piece extending upward from the main body and connectable to a workbench by a bolt or the like; a locking piece extending downward from the main body and locked to an end of the solar cell module; Equipped with A fixture characterized in that the core metal fitting is incorporated and integrally formed across the inside of the main body, the connecting piece, and the locking piece.

10. 10. The fixture according to claim 9, wherein the connecting piece and the locking piece are disposed at a right angle to each other.

11. 11. The fixture according to claim 9, further comprising a claw-shaped piece extending upward from the main body on a side opposite to the connecting piece, the claw-shaped piece being slightly inclined toward the connecting piece.

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