JP7290081B2 - Installation method of hanging tool and solar cell module - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hoisting tool for hoisting a solar cell module with a crane, and a method of installing a solar cell module using the hoisting tool.

Patent Literature 1 discloses a jig for lifting a solar panel. The jig includes locking members for locking edges at both ends of the rail-shaped member of the solar cell panel. Through the jig, the solar panel is lifted by a crane with the light incident surface in the horizontal direction and moved to the roof of a building such as a house.

JP-A-11-81680

A plurality of solar cell modules are electrically connected through connection cords and fixed to the roof of a building or the like. The roof is preliminarily provided with a support base for installing the solar cell module. The connection cord extends from the back surface of the solar cell module opposite to the light incident surface. For example, a solar cell module lifted by a crane via a jig described in Patent Document 1 is moved to a support base. Then, an operator enters between the solar cell module placed on the support base and the roof to electrically connect the connection cords.

When the solar cell module is attached to the outer wall of the building, the outer wall is pre-installed with a support base for fixing the solar cell module. A worker works on a scaffold installed on the outer wall of a building. For example, when a solar cell module is suspended by a crane using the jig described in Patent Literature 1 with the light incident surface in the horizontal direction, a worker must be at a high place to see the suspended solar cell module. It is necessary to change the posture of the module so that the light incident surface is vertical. It is desirable that the operation of fixing the solar cell module to the support stand while supporting the solar cell module whose posture has been changed at a high place is not unstable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hoist suitable for hoisting a solar cell module attached to an outer wall of a building.

Another object of the present invention is to provide a method for stably installing a solar cell module on the outer wall of a building.

(1) The present invention relates to a hoist for hoisting a solar cell module with its light incident surface extending in the vertical direction. The hanger includes an engaging member that changes in attitude between an engaging attitude for engaging with the solar cell module and a releasing attitude for releasing the engagement, and biases the engaging member to hold the engaging attitude. and a biasing member, which is movable to a first position and a second position below the first position, permitting a change in posture of the engaging member at the first position, and biasing the engaging member at the second position. A slider that holds the engaging member in the released posture against a member, and a guide that guides the slider so as to be vertically movable with respect to the engaging member.

The solar cell module can be lifted by a crane with the light incident surface aligned in the vertical direction by using the lifting tool without forming a hanging hole in the solar cell module. Since the engagement member is held in the release posture by the slider at the second position, the work of removing the solar cell module from the hanger is easy.

(2) Preferably, it further comprises a fastening portion for fastening an electrical connection cord of the solar cell module.

Since the connection cords of the solar cell module engaged with the engaging member are fastened to the fastening portion, the connection cords of the solar cell module lifted by the crane are connected to the connection cords of the already installed solar cell module. work is easy.

(3) Preferably, the fastening portion is a slit provided in the slider into which the connection cord can be inserted, the first space extending in a first direction having a vertical component, and the first space. and a second space extending in a second direction that intersects with the first direction, and the slider protrudes upward from the upper end of the engaging member at the first position. , the second space is located above the upper end of the engaging member when the slider is at the first position, and is above the upper end of the engaging member when the slider is at the second position. located below.

Contact between the connecting cord located in the second space of the slit and the upper end of the engaging member prevents the slider from moving to the second position. Since the second direction in which the second space extends intersects with the first direction in which the first space extends, the connection cord positioned in the second space is prevented from accidentally moving to the first space.

(4) Preferably, the fastening portion has a slit provided in the slider into which the connection cord can be inserted, and a holding member, and the holding member is adapted to be inserted into the slit. The connection cord is prevented from moving from the lower portion to the upper portion of the slit, the slider projects upward from the upper end of the engaging member at the first position, and the lower portion is configured so that the slider When the slider is at the first position, it is positioned above the upper end of the engaging member, and when the slider is at the second position, it is positioned below the upper end of the engaging member.

The contact between the connecting cord positioned at the lower portion of the slit and the upper end of the engaging member prevents the slider from moving to the second position. The holding member prevents the connecting cord located in the lower portion of the slit from moving to the upper portion.

(5) Preferably, the engaging member has a first member and a second member, and the first member and the second member are brought into contact with each other to achieve the engagement. The slider is movable between the first member and the second member, and at least one of the first member and the second member is positioned at the second position. and when the slider at the second position abuts against the protrusion, the first member and the second member are separated from each other to assume the release posture. is held to

(6) Preferably, the slider has a through-hole for hanging.

(7) The present invention relates to a method for installing a solar cell module using a hanger for lifting the solar cell module. The sling includes an engaging member that changes in posture between an engaging posture for engaging with the solar cell module and a releasing posture for releasing the engagement, and biasing the engaging member to hold the engaging posture. and an urging member movable to a first position and a second position below the first position, wherein the engagement member is allowed to change its posture at the first position, and the biasing member is at the second position. A slider that holds the engaging member in the releasing posture against the force member, and a guide that guides the slider so as to be vertically movable with respect to the engaging member. The above-mentioned construction method includes a mounting step of mounting the engaging member to the frame member of the solar cell module in the engaging posture, and a mounting step of setting the slider to the first position so that the solar cell module is mounted on the solar cell module via the hanger. A lifting process in which the incident surface is lifted by a crane along the vertical direction, and the connection cord of the lifted solar cell module is connected to the other solar cell module installed on the support stand provided on the outer wall of the building. a removing step of removing the hanger from the solar cell module to which the connection cord is connected by setting the slider to the second position; and a solar cell module removed from the hanger. and a fixing step of fixing to the support base.

It is possible to stably carry out the work of lifting the solar cell module with a crane through the hanging tool and fixing it to the support stand provided on the outer wall of the building. In addition, it is easy to perform wiring processing with the already installed solar cell module in a state where the solar cell module is suspended via the hanger.

ADVANTAGE OF THE INVENTION According to this invention, the solar cell module attached to the outer wall of a building can be lifted and installed stably on the outer wall of a building.

FIG. 1 is a perspective view showing a usage state according to the embodiment. FIG. 2 is a front view of the sling 10 according to the embodiment. 3A and 3B are left side views of the sling 10 according to the embodiment, FIG. FIG. 10 is a diagram showing the engaging member 30 in a released posture; 4A and 4B are views showing the first member 31 according to the embodiment, in which FIG. 4A is a left side view and FIG. 4B is a front view. 5A and 5B are views showing the second member 32 according to the embodiment, FIG. 5A being a left side view and FIG. 5B being a front view. 6A and 6B are views showing the slider 50 according to the embodiment, FIG. 6A being a left side view and FIG. 6B being a rear view. FIG. 7 is an explanatory diagram of a construction method 70 according to the embodiment. FIG. 8 is a perspective view showing an outer wall 81 provided with a support base 82. As shown in FIG. FIG. 9 is a side view showing a state in which the solar cell module 20 is temporarily placed on the support base 82. As shown in FIG. 10A and 10B are left side views of the sling 100 according to Modification 1, FIG. 3 is a diagram showing when the engaging member 30 is in the released posture; FIG. 11A and 11B are diagrams showing a slider 150 according to Modification 1. FIG. 11A is a left side view of the slider 150, and FIG. 11B is a front view of the slider 150. FIG. FIG. 12(A) is a perspective view of a sling 200 according to another modification, and FIG. 12(B) is a front view of a slider 50 according to another modification. FIG. 13(A) is a left side view of a sling 300 according to another modification, and FIG. 13(B) is a left side view of a sling 400 according to another modification. FIG. 14A is a partially enlarged view showing a slit 250D according to another modified example, and FIG. 14B is a partially enlarged view showing a slit 350D according to another modified example.

Embodiments of the present invention will be described below. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without changing the gist of the present invention. In the following description, the up-and-down direction 7 is defined based on the state of use (the state shown in FIG. 1) in which the hanger 10 is engaged with the solar cell module 20 and lifted, and the light incident surface 22A is the front. A front-rear direction 8 is defined as a direction orthogonal to the vertical direction 7 , and a left-right direction 9 is defined as a direction orthogonal to both the vertical direction 7 and the front-rear direction 8 .

[Hanging tool 10]
A sling 10 according to this embodiment is shown in FIGS. 1 and 2 . The sling 10 is used to lift the solar cell module 20 with the light incident surface 22A along the vertical direction 7 by a crane (not shown). The hanger 10 is made of metal, for example.

As shown in FIGS. 8 and 9, a plurality of solar cell modules 20 are arranged and attached to an outer wall 81 of a building such as a house or a building via support bases 82 . The solar cell module 20 is not particularly limited as long as it has a general structure. For example, as shown in FIG. and two cords 24; Code 24 is an example of a connection code.

As shown in FIG. 1, the frame member 21 is a frame made of, for example, stainless steel and has a rectangular outer shape, and is attached to the outer periphery of a rectangular flat solar cell panel 22 . A plurality of solar cell elements are arranged in the solar cell panel 22, and one surface is a light incident surface 22A. Each solar cell element generates a photovoltaic force according to the light incident on the light incident surface 22A. A terminal box 23 is fixed approximately in the center of the rear surface 22B of the solar cell panel 22 opposite to the light incident surface 22A. Terminal box 23 collects wires electrically connected to each solar cell element. The two cords 24 are electrically connected to wiring concentrated in the terminal box 23 . Connectors 25 for connecting to other cords 24 are provided at the extending ends of the two cords 24, respectively.

The sling 10 includes an engaging member 30, a coil spring 40, a slider 50, and a connecting member 60, as shown in FIGS.

As shown in FIGS. 1 and 3 , the engagement member 30 engages with the frame member 21 of the solar cell module 20 . The engaging member 30 has a first member 31 and a second member 32 . The first member 31 and the second member 32 move toward and away from each other to change their attitudes to an engaging attitude (FIG. 3A) or a releasing attitude (FIG. 3B).

As shown in FIG. 3 , first member 31 engages frame member 21 from the rear side of solar cell module 20 . As shown in FIG. 4, the first member 31 has a substantially L shape when viewed from the left side (FIG. 4A), and is larger than the dimension along the vertical direction 7 when viewed from the front (FIG. 4B). It is a rectangular flat plate with a long dimension along the left-right direction 9 . The dimension of the first member 31 along the left-right direction 9 is shorter than the dimension along the left-right direction 9 of the frame member 21 of the solar cell module 20 .

As shown in FIG. 4, the first member 31 has a main body portion 31A, an engaging portion 31B, a convex portion 31C, and a through hole 31D.

The body portion 31A mainly transmits the load applied to the engaging portion 31B to the slider 50 via the headed pin 61 passing through the through hole 31D. The body portion 31A is a portion whose front and back surfaces extend along the vertical direction 7 and the horizontal direction 9 . The body portion 31A is a rectangular flat plate whose dimension along the left-right direction 9 is longer than the dimension along the up-down direction 7 .

The engaging portion 31B supports the frame member 21 of the solar cell module 20 from below in use. The engaging portion 31B is a portion whose front and back surfaces extend along the front-rear direction 8 and the left-right direction 9 . The engaging portion 31B is a rectangular flat plate whose dimension along the left-right direction 9 is longer than the dimension along the front-rear direction 8 . The rear end of the engaging portion 31B is continuous with the front end of the main body portion 31A, and extends forward from the front end of the main body portion 31A. The dimension by which the engaging portion 31B protrudes from the main body portion 31A along the front-rear direction 8 is shorter than the dimension along the front-rear direction 8 of the frame member 21 .

The convex portion 31C contacts the rear surface of the slider 50 when the slider 50 is at the second position P2 (the position shown in FIG. 3B). The convex portion 31C protrudes forward from the front surface of the main body portion 31A in a hemispherical shape when viewed from the side (FIG. 4A) and from the top. Two convex portions 31C are provided on the front surface of the main body portion 31A, and are located line-symmetrically with respect to an imaginary line 33 extending along the vertical direction 7 through the center of the main body portion 31A in the left-right direction 9. As shown in FIG.

A headed pin 61, which will be described later, passes through the through hole 31D. The through hole 31D penetrates the main body portion 31A along the front-rear direction 8. As shown in FIG. When viewed from the front ( FIG. 4(B) ), the through hole 31D is circular and its diameter is slightly larger than the diameter of the headed pin 61 . Two through-holes 31</b>D are formed in the body portion 31</b>A and are located line-symmetrically with respect to the virtual line 33 .

As shown in FIGS. 3A and 3B, the second member 32 is located in front of the first member 31, and when in use, is attached to the upper surface and the front surface of the frame member 21 of the solar cell module 20. It abuts and holds the frame member 21 in a state of being engaged with the first member 31 . As shown in FIG. 5, the second member 32 has a crank-shaped outer shape when viewed from the left side, and a rectangular outer shape when viewed from the front, the dimension along the horizontal direction 9 being longer than the dimension along the vertical direction 7. . The second member 32 has a body portion 32A, a first piece 32B, a second piece 32C, a convex portion 32D, and a through hole 32E.

As shown in FIG. 5, the body portion 32A is a portion whose front and back surfaces extend along the vertical direction 7 and the horizontal direction 9. As shown in FIG. The body portion 32A is a rectangular plate having a dimension along the left-right direction 9 longer than a dimension along the up-down direction 7 .

The first piece 32B contacts the upper surface of the frame member 21 of the solar cell module 20 when the engaging member 30 is in the engaging posture (FIG. 3A). As shown in FIG. 5 , the first piece 32B is a portion whose front and back surfaces extend along the front-rear direction 8 and the left-right direction 9 . The first piece 32B is a rectangular plate whose dimension along the left-right direction 9 is longer than the dimension along the front-rear direction 8 . The first piece 32B has a rear end connected to the lower end of the main body portion 32A and extends forward from the lower end of the main body portion 32A. The dimension of the first piece 32</b>B along the front-rear direction 8 is shorter than the dimension of the frame member 21 along the front-rear direction 8 .

The second piece 32C contacts the front surface of the frame member 21 of the solar cell module 20 when the engaging member 30 is in the engaging posture (FIG. 3A). As shown in FIG. 5 , the second piece 32</b>C is a portion whose front and back surfaces extend along the vertical direction 7 and the horizontal direction 9 . The second piece 32</b>C is a rectangular plate whose dimension along the left-right direction 9 is longer than its dimension along the up-down direction 7 . The second piece 32C has an upper end connected to the front end of the first piece 32B and extends downward from the front end of the first piece 32B. The dimension of the second piece 32</b>C in the vertical direction 7 is shorter than the dimension of the frame member 21 in the vertical direction 7 .

As shown in FIG. 3B, the convex portion 32D contacts the front surface of the slider 50 when the slider 50 is at the second position P2. The convex portion 32D has a hemispherical shape that protrudes rearward from the rear surface of the main body portion 32A. As shown in FIG. 5, the convex portion 32D is located line-symmetrically with respect to an imaginary line 34 extending vertically through the center of the body portion 32A in the left-right direction 9. As shown in FIG. The dimension along the front-rear direction 8 of the projection 32D is shorter than the dimension along the front-rear direction 8 of the projection 31C. The positions of the convex portion 32D and the convex portion 31C partially overlap each other in the vertical direction 7 . When the engaging member 30 is in the engaging posture (FIG. 3A), the convex portion 32D and the convex portion 31C are in contact with each other.

As shown in FIG. 3, a headed pin 61 is inserted through the through hole 32E. As shown in FIG. 5 , the through hole 32E is circular and has a diameter approximately equal to the outer diameter of the main body portion 61A of the headed pin 61 . Two through-holes 32E are provided in the body portion 32A and are located line-symmetrically with respect to the virtual line 34 . Two through-holes 32E and two through-holes 31D are arranged in the front-rear direction 8 in the engaging member 30 . One headed pin 61 is inserted through the through holes 32E and 31D arranged in the front-rear direction 8. As shown in FIG.

As shown in FIG. 3, the coil spring 40 urges the main body portion 31A of the first member 31 forward to maintain the engagement posture (FIG. 3A) of the engagement member 30. is applied to the first member 31 . The coil spring 40 is inserted through the headed pin 61 and positioned between the main body portion 31A of the first member 31 and the head portion 61B of the headed pin 61 . The coil spring 40 is an example of a biasing member.

As shown in FIG. 3, the slider 50 moves between the first member 31 and the second member 32 along the vertical direction 7 to reach the first position P1 (the position shown in FIG. 3A). ) and to a second position P2 (the position shown in FIG. 3B) below the first position P1. The slider 50 allows the attitude change of the engaging member 30 at the first position P1, and holds the engaging member 30 in the released attitude at the second position P2.

As shown in FIGS. 2 and 6, the outer shape of the slider 50 is substantially I-shaped when viewed from the side. It has a substantially convex shape in which part of both ends in the left-right direction 9 in the vicinity is notched. The slider 50 has a through hole 50A, a protrusion 50B, a hanging hole 50C, and a slit 50D.

50 A of through-holes guide the slider 50 along the up-down direction 7 with respect to the engaging member 30 so that a movement is possible between the 1st position P1 and the 2nd position P2. A headed pin 61 is inserted through the through hole 50A. The dimension of the through-hole 50A in the left-right direction 9 is approximately the same as the outer diameter of the main body portion 61A of the headed pin 61 . The through hole 50A is an elongated hole whose dimension along the vertical direction 7 is longer than its dimension along the horizontal direction 9 . Two through-holes 50A are provided in the slider 50, and are located line-symmetrically with respect to a virtual line 51 that passes through the center of the slider 50 in the left-right direction 9 and extends along the vertical direction. A headed pin 61 is inserted into each through hole 50A together with the through hole 32E and each through hole 31D. With the headed pin 61 inserted into the through hole 50A, the slider 50 can move in the vertical direction 7 with respect to the engaging member 30 by the dimension along the vertical direction 7 of the through hole 50A. 50 A of through-holes are an example of a guide.

The convex portion 50B contacts the front surface of the main body portion 31A of the first member 31 when the slider 50 is positioned at the second position P2. The convex portion 50B has a hemispherical shape that protrudes rearward from the rear surface of the slider 50 . The dimension along the front-rear direction 8 of the projection 50B is shorter than the dimension along the front-rear direction 8 of the projection 31C. In the slider 50, the dimension from the lower end of the convex portion 50B to the lower end of the slider 50 is longer than the dimension from the upper end of the convex portion 31C to the upper end of the first member 31 in the first member 31. Accordingly, when the slider 50 is positioned at the second position P2, the convex portion 50B contacts the first member 31, and the slider 50 contacts the convex portions 31C and 32D. As a result, the first member 31 and the second member 32 are separated from each other against the biasing force of the coil spring 40, and the engaging member 30 is held in the released posture.

A crane hook 11 is inserted through the suspension hole 50C. The hanging hole 50C has a substantially rectangular opening, and the size of the opening is set to be large enough for the hook 11 to pass through. Two hanging holes 50C are provided in the slider 50, and are positioned symmetrically with respect to a virtual line 51 extending vertically through the center of the slider 50 in the left-right direction 9. As shown in FIG. The suspension hole 50C is located above the through hole 50A.

The cord 24 of the solar cell module 20 can be inserted into the slit 50D. The slit 50D is substantially L-shaped when viewed from the front or the rear. Two slits 50D are provided in the slider 50, and are located line-symmetrically with respect to a virtual line 51 extending vertically through the center of the slider 50 in the left-right direction 9. As shown in FIG. The slit 50D opens at the upper end of the slider 50. As shown in FIG. The slit 50</b>D includes a first portion 52 extending downward 12 from the upper end of the slider 50 , a second portion 53 continuing from the lower end of the first portion 52 and extending leftward 13 or rightward 14 , and a protrusion 54 . have. The slit 50D is an example of a fastening portion. Downward 12 is an example of a first direction. Left 13 and right 14 are examples of the second direction. The first portion 52 is an example of the first space. The second portion 53 is an example of a second space.

The first portion 52 is insertable with the cord 24 of the solar cell module 20 and guides the cord 24 to the second portion 53 . The first portion 52 has a dimension along the left-right direction 9 longer than the diameter of the cord 24, for example, a dimension along the left-right direction 9 of 9 mm and a diameter of the cord 24 of 7 mm. The first portion 52 has a dimension along the up-down direction 7 that is longer than a dimension along the left-right direction 9 .

The second portion 53 is a place where the cord 24 of the solar cell module 20 can be inserted and the cord 24 is retained. The second portion 53 is longer than the diameter of the cord 24 in the vertical direction 7 and the horizontal direction 9 . The dimension along the vertical direction 7 of the second portion 53 is shorter than the dimension along the vertical direction 7 of the first portion 52 . The second portion 53 of the slit 50</b>D on the left side of the center of the slider 50 in the horizontal direction 9 extends leftward 13 from the lower end of the first portion 52 . The second portion 53 of the slit 50D on the right side of the center of the slider 50 in the horizontal direction 9 extends rightward from the lower end of the first portion 52 .

The slider 50 protrudes upward from the upper end of the engaging member 30 at both the first position P1 and the second position P2. The second portion 53 is positioned above the upper end of the engaging member 30 when the slider 50 is at the first position P1, and is positioned above the upper end of the engaging member 30 when the slider 50 is at the second position P2. located below.

The protrusion 54 holds the cord 24 of the solar cell module 20 to the second portion 53 . The protrusion 54 is located at the boundary between the first portion 52 and the second portion 53 and extends downward from the upper end of the second portion 53 . The dimension of the projection 54 along the vertical direction 7 is shorter than the dimension of the second portion 53 along the vertical direction 7 . The dimension along direction 7 is 9 mm. In order for the cord 24 positioned in the second portion 53 to pass below the projection 54 and enter the first portion 52, the cord 24 is elastically deformed so that the length of the cord 24 along the vertical direction 7 is shortened. need to

As shown in FIG. 3 , the connecting member 60 connects the first member 31 and the second member 32 of the engaging member 30 so that the posture can be changed. Further, the connecting member 60 connects the engaging member 30 and the slider 50 so that the slider 50 can move in the vertical direction 7 with respect to the engaging member 30 . Two connection members 60 are provided in the hanger 10 and are positioned line-symmetrically with respect to a virtual line 15 extending vertically through the center of the hanger 10 in the left-right direction 9 . The connecting member 60 has a headed pin 61 and a split pin 62 .

The headed pin 61 is inserted through the coil spring 40, the through hole 31D of the first member 31, the through hole 50A of the slider 50, and the through hole 32E of the second member 32 in order from the rear. The headed pin 61 is formed in a rod-shaped main body portion 61A that is inserted through each member, a head portion 61B that protrudes radially from the rear end of the main body portion 61A, and a split pin 62 that passes through the main body portion 61A. and a pin hole 61C. By inserting the split pin 62 into the pin hole 61C, it is maintained so as not to slip out of the headed pin 61 inserted through each member.

[Posture change of engaging member 30]
As shown in FIG. 3A , the engaging member 30 in the engaging posture engages with the frame member 21 of the solar cell module 20 . The sling 10 is lifted by a crane while the engaging member 30 is in the engaging posture. In the engaged posture, the slider 50 is positioned at the first position P1. In the engaged posture, the convex portion 50B of the slider 50 is not in contact with the front surface of the first member 31, and the convex portions 31C and 32D are not in contact with the front and rear surfaces of the slider 50, respectively. As a result, the first member 31 and the second member 32 are biased by the coil spring 40 to take a positional relationship in which the first member 31 and the second member 32 are closest to each other in the front-rear direction 8, that is, the engagement posture. When the hook 11 of the crane is inserted through the suspension hole 50C of the slider 50 and the sling 10 is lifted, the weight of the solar cell module 20 prevents the slider 50 from moving downward with respect to the engaging member 30. It does not move from the first position P1 to the second position P2.

As shown in FIG. 3B , the released posture is a state in which the solar cell module 20 can be removed from the hanger 10 . In the released posture, the slider 50 is positioned at the second position P2. At the second position P2, the convex portion 50B of the slider 50 contacts the front surface of the first member 31, and the convex portions 31C and 32D contact the slider 50, respectively. That is, the slider 50 is sandwiched between the convex portion 31C and the convex portion 32D. Thereby, in the release posture, the first member 31 and the second member 32 are separated in the front-rear direction 8 compared to the engagement posture.

The dimension by which the projection 50B protrudes rearward from the rear surface of the slider 50, the dimension by which the projection 31C projects forward from the rear surface of the first member 31, and the dimension by which the projection 32D projects rearward from the rear surface of the second member 32. is large, the distance in which the first member 31 and the second member 32 are separated along the front-rear direction 8 in the released posture is greater on the lower end side than on the upper end side. In the released posture, the distance that the second piece 32C of the second member 32 separates forward from the frame member 21 of the solar cell module 20 is greater than the dimension that the engaging portion 31B of the first member 31 protrudes forward from the main body portion 31A. Therefore, the frame member 21 may move forward of the engaging portion 31B and be out of engagement with the engaging portion 31B.

[Method for constructing solar cell module 20 using hanger 10]
Hereinafter, a method 70 of installing the solar cell module 20 using the hanger 10 will be described with reference to FIGS. 7 to 9. FIG. Construction method 70 includes first step 71 to eighth step 78 .

A first step 71 is a step in which the hook 11 of a crane (not shown) is inserted through the suspension hole 50C of the slider 50 constituting the suspension tool 10 . A worker connects the hook 11 and the hanging tool 10 by inserting the hook 11 into each of the two hanging holes 50C.

A second step 72 is a step of attaching the engaging member 30 to the frame member 21 of the solar cell module 20 in the engaging posture (FIG. 3A). The operator sets the engaging member 30 of the sling 10 to the releasing posture (FIG. 3(B)) and engages the first member 31 with the frame member 21 . After that, the engaging member 30 is brought into the engaging posture, and the second member 32 abuts against the frame member 21 and is attached to the frame member 21 . The second step 72 is an example of an attachment step.

A third step 73 is a step of fastening the two cords 24 of the solar cell module 20 to the slits 50D of the slider 50, respectively. The operator passes through the first portion 52 extending downward 12 from the upper end of the slider 50, and reaches the second portion 53 continuous with the lower end of the first portion 52 and extending leftward 13 or rightward 14. Each of the two cords 24 extending from the terminal box 23 is inserted into the slit 50D until the end is reached.

A fourth step 74 is a step in which the slider 50 is set to the first position P<b>1 and the solar cell module 20 is lifted by a crane with the light incident surface 22</b>A of the solar cell module 20 along the vertical direction 7 via the lifting tool 10 . When the sling 10 is lifted by the crane, the weight of the solar cell module 20 is added to the engaging member 30, thereby suppressing the slider 50 from moving from the first position P1 to the second position P2. Further, since the cord 24 is positioned at the second portion 53 of the slit 50D, the contact between the cord 24 and the upper end of the engaging member 30 also causes the slider 50 to move from the first position P1 to the second position P2. is prohibited. The solar cell module 20 hoisted by the hoist 10 is transported to a position where it is installed on the outer wall 81 of the building. If there is a solar cell module 20 already installed, the installed position is next to the last installed solar cell module 20 along the vertical direction 7 or the horizontal direction 9 . A fourth step 74 is an example of a lifting step. In addition, as shown in FIG. 8, a scaffolding 83 is provided in advance near the outer wall 81 to which the solar cell module 20 is attached.

A fifth step 75 is a step of temporarily placing the solar cell module 20 on a support base 82 provided on the side wall. The lower portion of the frame member 21 of the solar cell module 20 is placed on the support base 82 . When the solar cell module 20 is temporarily placed, the upper portion of the frame member 21 is separated from the outer wall 81 compared to the lower portion.

In a sixth step 76, the cords 24 of the suspended solar cell module 20 are electrically connected to the cords 24 of the other solar cell module 20 installed on the support base 82 provided on the outer wall 81 of the building. It is a process. At this time, one of the cords 24 of the solar cell module 20 that has been lifted, which was connected in the sixth step 76, is removed from the slit 50D of the slider 50. FIG. A sixth step 76 is an example of a connecting step.

A seventh step 77 is a step of removing the hanger 10 from the solar cell module 20 to which the cord 24 is connected, with the slider 50 at the second position P2. The operator removes the cord 24 that was not removed in the sixth step 76 from the slit 50D. Since the solar cell module 20 is temporarily placed on the support base 82, the weight of the solar cell module 20 is not greatly applied to the engaging member 30, so that the slider 50 is easily moved from the first position P1 to the second position P2. . Therefore, the operator removes the hanger 10 from the solar cell module 20 by moving the slider 50 to the second position P<b>2 and disengaging the engaging member 30 . A seventh step 77 is an example of a removing step.

An eighth step 78 is a step of fixing the solar cell module 20 removed from the hanger 10 to the support base 82 . An eighth step 78 is an example of a fixing step. Note that the solar cell module 20 may be fixed to the support base 82 while being lifted by a crane.

[Action and effect of the embodiment]
In the present embodiment, the solar cell module 20 can be lifted by a crane with the light incident surface 22A along the vertical direction 7 by the hanging tool 10 without forming a hanging hole in the solar cell module 20 . Since the engagement member 30 is held in the released posture by the slider 50 at the second position P2, the work of removing the solar cell module 20 from the hanger 10 is easy.

A convex portion 31C is provided on the first member 31, and a convex portion 32D is provided on the second member 32 on the surface that contacts the slider 50, respectively. When the slider 50 moves from the first position P1 to the second position P2, the slider 50 abuts on the protrusions 31C and 32D, and the front and rear surfaces of the slider 50 separate from the rear and front surfaces of the second member 32 and the first member 31, respectively. As a result, when the slider 50 moves from the first position P1 to the second position P2, there is no friction between the surfaces, and the convex portion is provided only on either the first member 31 or the second member 32. It is easy to move from the first position P1 to the second position P2, and damage to each member due to friction is suppressed.

In addition, since the positions of the front end of the convex portion 31C and the rear end of the convex portion 32D partially overlap in the vertical direction 7 in the engaged posture, compared to the case where the positions in the vertical direction 7 are exactly the same, The length of the projections 31C and 32D in the front-rear direction 8 can be increased, and the distance between the lower end side of the first member 31 and the lower end side of the second member 32 in the release posture can be increased.

Further, when the slider 50 moves from the first position P1 to the second position P2, the convex portion 31C of the first member 31 comes into contact with the rear surface of the slider 50, and then the convex portion 50B of the slider 50 contacts the first member 31. Abut on the front face. As a result, the momentum of the slider 50 moving from the first position P1 to the second position P2 can be reduced, and damage to the through hole 50A can be suppressed.

In addition, since the width of the slit 50D in the left-right direction 9 or the up-down direction 7 is narrower than that of the connector 25, the cord 24 inserted into the slit 50D is prevented from slipping out in the front-rear direction 8 and dropping.

In addition, since the cords 24 of the solar cell module 20 engaged with the engaging member 30 are fastened in the slits 50D, the cords 24 of the solar cell module 20 lifted by the crane and the already installed solar cell module 20 are separated from each other. The work of connecting the cord 24 is easy.

In addition, contact between the cord 24 located in the second portion 53 of the slit 50D and the upper end of the engaging member 30 prevents the slider 50 from moving to the second position P2. Since the left side 13 or right side 14 from which the second portion 53 extends and the lower side 12 from which the first portion 52 extends intersect, the cord 24 located in the second portion 53 moves to the first portion 52 inadvertently. is suppressed.

In addition, the projection 54 has a dimension along the vertical direction 7 between the lower end of the projection 54 and the lower end of the second portion 53 that is shorter than the diameter of the cord 24 . Inadvertent movement of the cord 24 positioned at 53 to the first portion 52 is suppressed.

In addition, the operation of lifting the solar cell module 20 with a crane via the hanging tool 10 and fixing it to the support base 82 provided on the outer wall 81 of the building can be stably performed. In addition, while the solar cell module 20 is suspended via the hanger 10, it is easy to perform the wiring process with the solar cell module 20 that has already been installed.

[Modification 1]
In the above embodiment, the first portion 52 of the slit 50</b>D extends along the vertical direction 7 and the second portion 53 extends from the lower end of the first portion 52 along the left-right direction 9 . However, the second portion 53 may extend in the same direction as the first portion 52, and a holding member that separates the first portion 52 and the second portion 53 may be used. In Modified Example 1, an example of a slider 150 having slits 150D, holding members 55, and projections 56 will be described with reference to FIGS. 10 and 11. FIG.

The cord 24 of the solar cell module 20 can be inserted into the slit 150D. The slit 150D extends along the vertical direction 7 as shown in FIG. 11(B). Two slits 150D are provided in the slider 150, and are located line-symmetrically with respect to a virtual line 151 extending vertically through the center of the slider 150 in the left-right direction 9. As shown in FIG. The slit 150D opens at the upper end of the slider 150. As shown in FIG. The slit 150</b>D has a first portion 152 including an opening at the upper end of the slider 150 and a second portion 153 that is continuous with the first portion 152 and separated from the first portion 152 by the holding member 55 .

The first portion 152 is insertable with the cord 24 of the solar cell module 20 and guides the cord 24 to the second portion 153 . The first portion 152 includes an opening at the upper end of slider 150 . The first portion 152 has a dimension along the left-right direction 9 longer than the diameter of the cord 24, for example, a dimension along the left-right direction 9 of 9 mm and a diameter of the cord 24 of 7 mm. The first portion 152 has a dimension along the up-down direction 7 that is longer than a dimension along the left-right direction 9 . The first portion 152 is an example of an upper portion.

The second portion 153 is a place where the cord 24 of the solar cell module 20 can be inserted and the cord 24 is retained. The second portion 153 has a dimension along the lateral direction 9 that is longer than the diameter of the cord 24 . The second portion 153 extends downward from the lower end of the first portion 152 . The second portion 153 is an example of a lower portion.

The slider 150 of the sling 100 protrudes upward from the upper end of the engaging member 30 at both the first position P1 and the second position P2. The second portion 153 is located above the upper end of the engaging member 30 when the slider 150 is at the first position P1, and is above the upper end of the engaging member 30 when the slider 150 is at the second position P2. located below.

The holding member 55 prevents the cord 24 inserted into the slit 150D from moving from the second portion 153 to the first portion 152 in the slit 150D. A holding member 55 is provided for each slit 150D. The holding member 55 has a rod portion 55A and a shaft portion 55B. Note that the combination of the slit 150D and the holding member 55 is an example of the fastening portion.

The rod-like portion 55A divides the slit 150D into a first portion 152 and a second portion 153 by rotating to a first position P3 across the slit 150D along the left-right direction 9 . The rod-shaped portion 55A has a length dimension longer than the dimension along the left-right direction 9 of the slit 150D. One end of the rod-shaped portion 55A is connected to the shaft portion 55B by welding, and rotates about the shaft portion 55B to move between the first position P3 and the second position P4.

When positioned at the first position P3, the rod-shaped portion 55A assumes a posture along the left-right direction 9, dividing the slit 150D into the first portion 152 and the second portion 153. As shown in FIG. At this time, the bar-shaped portion 55A abuts on a projection 56, which will be described later, from below. At this time, the rod-shaped portion 55A holds the cord 24 in the second portion 153 by preventing the cord 24 inserted in the second portion 153 from moving to the first portion 152 . The bar-shaped portion 55A may be at the second position P4 or the first position P3 when the slider 150 moves from the first position P1 to the second position P2.

When positioned at the second position P4, the rod-shaped portion 55A assumes a posture along the vertical direction 7 and does not divide the slit 150D into the first portion 152 and the second portion 153. As shown in FIG. At this time, the bar-shaped portion 55A does not overlap the slit 150D in the front-rear direction 8. As shown in FIG. The bar portion 55A allows the cord 24 to move from the first portion 152 to the second portion 153 at this time.

The shaft portion 55B serves as a rotation shaft for the rod-shaped portion 55A. The shaft portion 55B has a rod-shaped main body portion 58 and a head portion 59 having a diameter longer than the diameter of the main body portion 58 at one end of the main body portion 58 . In the shaft portion 55B, the main body portion 58 is passed through a through hole provided in the slider 150 from behind, and the end of the main body portion 58 without the head portion 59 is welded to the rod-shaped portion 55A. Head 59 is embedded in a recess of slider 150 . Since the head 59 and the rod-shaped portion 55A sandwich the slider 150, friction is generated between the front surface of the slider 150 and the rod-shaped portion 55A when the rod-shaped portion 55A rotates, and the rod-shaped portion 55A does not rotate due to gravity. The shaft portion 55B is positioned line-symmetrically with respect to a virtual line 51 that passes through the center of the slider 50 in the left-right direction 9 and extends along the vertical direction. The shaft portion 55B is located closer to the center of the slider 50 than the slit 150D.

The protrusion 56 prevents the bar-shaped portion 55A from moving upward from the first position P3. The projection 56 has the same position in the vertical direction 7 as the shaft portion 55B, and is located outside the center of the slider 150 from the slit 150D.

[Effects of Modification 1]
Contact between the cord 24 located in the second portion 153 of the slit 150D and the upper end of the engaging member 30 prevents the slider from moving to the second position P2. The holding member 55 prevents the cord 24 located in the second portion 153 of the slit 150D from moving to the first portion 152. As shown in FIG.

[Other variations]
Although each member of the sling 10 has been integrally formed, as shown in FIG.

The main body portion 31A of the first member 31 does not have to be connected to the engaging portion 31B at the lower end of the front surface, and may be connected to the engaging portion 31B at the front surface.

The main body portion 31A of the first member 31 extends straight in the vertical direction 7 when viewed from the side, but as shown in FIG. 331 may be used. The lower surface of the stepped portion 35 may be in contact with the upper surface of the frame member 21 . At this time, the second member 32 is not provided with the first piece 32B and the second piece 32C as shown in FIG. may

Although two hemispherical projections 31C, 32D, and 50B are provided, they may extend by a predetermined dimension along the left-right direction 9, and the number of projections 31C, 32D, and 50B may be three or more. may

The slit 50D was provided outside the suspension hole 50C in the left-right direction 9, but instead of the slit 50D, a slit provided inside the suspension hole 50C in the left-right direction 9 as shown in FIG. It may be 250D.

Although the second portion 53 extends outward from the center of the slider 50 from the lower end of the first portion 52, it may extend inward.

As shown in FIG. 14A, the second portion 53 may not be connected to the lower end of the first portion 52 and may be connected above the lower end.

The second portion 53 may extend from the lower end of the first portion 52 to both the left and right sides, as shown in FIG. 14(B).

The headed pin 61 may be passed through each through hole from the front instead of being passed through the through hole from the rear.

A bolt may be used instead of the headed pin 61 . At this time, a nut may be used instead of the split pin 62 .

The protrusion 54 of the slit 50D may not be provided.

The positions of the holding member 55 and the projection 56 with respect to the slit 50D may be interchanged left and right.

7 Vertical direction 10 Hanging tool 12 Downward (an example of the first direction)
13 Left (an example of the second direction)
14...right (an example of the second direction)
20... Solar cell module 21... Frame material 22A... Light incident surface 24... Cord (an example of connection cord)
30... Engagement member 31... First member 31C... Convex part 32... Second member 32D... Convex part 40... Coil spring (an example of biasing member)
50 Slider 50A Through hole (an example of a guide)
50D... Slit (an example of a fastening part)
52... The first part (an example of the upper part)
53 Second part (an example of the lower part)
55... Holding member 70... Construction method 81... Outer wall 150D... Slit 152... First part 153... Second part 200... Hanging tool 250D... Slit 300...・Hanging tool 331...First member 400...Hanging tool 431...First member 432...Second member P1...First position P2...Second position P3...First Position P4: Second position

Claims (7)

A hoist for hoisting a solar cell module with a light incident surface extending in the vertical direction,
an engaging member that changes its posture to an engaging posture for engaging with the solar cell module and a releasing posture for releasing the engagement;
a biasing member that biases the engaging member to hold the engaging posture;
It is movable to a first position and a second position below the first position, allowing the attitude change of the engaging member at the first position, and resisting the biasing member at the second position. a slider that holds the engagement member in the release posture;
and a guide that guides the slider so as to be vertically movable with respect to the engaging member. 2. The sling according to claim 1, further comprising a fastener for fastening an electrical connection cord of the solar cell module. The fastening portion is a slit provided in the slider into which the connection cord can be inserted, and is continuous with a first space extending in a first direction having a vertical component, and the first space, and a second space extending in a second direction intersecting with the first direction,
The slider protrudes upward from the upper end of the engaging member at the first position,
The second space is positioned above the upper end of the engaging member when the slider is at the first position, and below the upper end of the engaging member when the slider is at the second position. 3. A sling according to claim 2, located at the . The fastening portion has a slit provided in the slider and into which the connection cord can be inserted, and a holding member,
the holding member prevents the connection cord inserted into the slit from moving from the lower portion to the upper portion of the slit;
The slider protrudes upward from the upper end of the engaging member at the first position,
The lower portion is positioned above the upper end of the engaging member when the slider is at the first position, and below the upper end of the engaging member when the slider is at the second position. 3. A sling according to claim 2, wherein the sling. The engaging member has a first member and a second member,
The first member and the second member are changed in posture to the engagement posture or the release posture by contacting and separating from each other,
The slider is movable between the first member and the second member,
at least one of the first member and the second member has a convex portion that contacts the slider at the second position;
5. The slider according to any one of claims 1 to 4, wherein the first member and the second member are separated from each other and held in the release posture by abutment between the slider and the projection at the second position. hanging tool. 6. The hanging tool according to any one of claims 1 to 5, wherein the slider has a through-hole for hanging. A method for installing a solar cell module using a hanging tool for lifting the solar cell module,
The above hangers are
an engaging member that changes its posture to an engaging posture for engaging with the solar cell module and a releasing posture for releasing the engagement;
a biasing member that biases the engaging member to hold the engaging posture;
It is movable to a first position and a second position below the first position, allowing the attitude change of the engaging member at the first position, and resisting the biasing member at the second position. a slider that holds the engagement member in the release posture;
a guide that guides the slider so as to be movable in the vertical direction with respect to the engaging member;
an attaching step of attaching the engaging member to the frame member of the solar cell module in the engaging posture;
a lifting step in which the slider is set to the first position and the solar cell module is lifted by a crane via the lifting tool with the light incident surface extending in the vertical direction;
a connection step of electrically connecting the connection cord of the suspended solar cell module and the connection cord of another solar cell module installed on a support base provided on the outer wall of the building;
a removing step of removing the hanger from the solar cell module to which the connection cord is connected by setting the slider to the second position;
and a fixing step of fixing the solar cell module removed from the hanger to the support base.

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