JP2017221119A - Greenhouse and curtain system for greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the reduction of surface area of open curtains which have been gathered up which blocks sunlight.SOLUTION: A greenhouse 30 comprises an outer shell 20 and a curtain system 10. The curtain system 10 is provided with a first curtain 11 and a second curtain 12 which can be opened and closed between a deployed state and a gathered-up state in a section intersecting the longer direction of the outer shell 20. The first curtain 11 has a first fixed end part 111 that remains at a fixed position in the central part of the outer shell 20 and a first moveable end part 112 that can move between the central part of the outer shell 20 and a first peripheral part. The second curtain 12 has a second fixed end part 121 that remains at a fixed position in the central part of the outer shell 20 and a second moveable end part 122 that can move between the central part of the outer shell 20 and a second peripheral part at the opposite side to the first peripheral part. When the first curtain 11 is in the gathered-up state and the second curtain 12 is in the gathered-up state, the first curtain 11 and the second curtain 12 are aligned vertically.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to an agricultural house, an agricultural house curtain system, and more particularly to an agricultural house with a movable curtain, and an agricultural house curtain system.

  Conventionally, a curtain opening and closing device for a greenhouse (agricultural house) has been proposed (see, for example, Patent Document 1). The curtain is provided for the purpose of keeping warm, shading, and shielding heat during the day. Patent Document 1 describes a curtain opening and closing device configured to wind up a curtain by covering each side of a greenhouse with one curtain and rotating a winding shaft fixed along the lower edge of the curtain. ing. That is, the curtain is provided with two curtains covering one side.

JP-A-11-299365

  By the way, when the winding shaft is rotated and the curtain is wound up to the top of the greenhouse, the width dimension occupied by the curtain wound on the winding shaft is relatively large. Even when the curtain is wound up to the top of the greenhouse, generally, a part of the curtain is often left without being wound around the winding shaft. That is, even when the curtain is wound around the winding shaft, a relatively wide area at the top of the greenhouse is covered with the curtain.

  In the configuration described in Patent Document 1, two curtains are arranged side by side, and each curtain covers one side from the top of the greenhouse. Therefore, in the state where the curtain is wound around the winding shaft in order to take sunlight into the greenhouse (converged state), an area twice as large as the state where one curtain is wound is covered with the curtain. Therefore, it cannot be said that the utilization rate of sunlight in the greenhouse is sufficient.

  An object of the present invention is to provide an agricultural house capable of reducing the area that blocks sunlight in a converged state where the curtain is opened, and an agricultural house curtain system.

  An agricultural house according to the present invention includes an outer shell and a curtain system. The outer shell is disposed so as to surround the farm field. The curtain system has a first curtain and a second curtain arranged above the farm field. The first curtain is movable such that the first movable end, which is the other end, changes the distance with respect to the first fixed end, which is one end. The second curtain is movable such that the second movable end, which is the other end, changes the distance with respect to the second fixed end, which is one end. When the first curtain and the second curtain are both in the unfolded state, they cover different parts in the cross section intersecting with the longitudinal direction of the outer shell, and when both are in the converged state, the longitudinal direction of the outer shell. It is arranged so as to be lined up and down in a cross section intersecting with.

  The curtain system of the agricultural house which concerns on this invention is attached to the outer shell of the agricultural house arrange | positioned so that a farm field may be enclosed. The curtain system has a first curtain and a second curtain arranged above the farm field. The first curtain is movable such that the first movable end, which is the other end, changes the distance with respect to the first fixed end, which is one end. The second curtain is movable such that the second movable end, which is the other end, changes the distance with respect to the second fixed end, which is one end. When the first curtain and the second curtain are both in the unfolded state, they cover different parts in the cross section intersecting with the longitudinal direction of the outer shell, and when both are in the converged state, the longitudinal direction of the outer shell. It is arranged so as to be lined up and down in a cross section intersecting with.

  According to the structure of this invention, it has the advantage that the area which shields sunlight can be reduced in the convergence state which opened the curtain.

Drawing 1 is a perspective view showing the appearance of the agricultural house concerning an embodiment. FIG. 2 is a schematic cross-sectional view of the agricultural house according to the embodiment. FIG. 3 is a perspective view showing a joint used in the agricultural house according to the embodiment. FIG. 4 is a perspective view showing a first drive device used in the agricultural house according to the embodiment. FIG. 5 is a perspective view showing a guide frame and a slider used in the agricultural house according to the embodiment. FIG. 6 is a block diagram showing the relationship between the operating device and the motor used in the agricultural house according to the embodiment. Drawing 7 is a sectional view showing the 1st curtain and the 2nd curtain which piled up the heat insulating sheet used in the agricultural house concerning an embodiment. FIG. 8 is a schematic cross-sectional view showing an example in which equipment is arranged in the agricultural house according to the embodiment.

  As shown in FIG. 1, an agricultural house 30 described below includes an outer shell 20 that is disposed so as to surround a field 31 where plants are grown, and a curtain system 10 that is attached to the outer shell 20. . The plant cultivated in the field 31 can be selected from leaf vegetables, fruit vegetables, beans, fruits, flowers and the like. Leafy vegetables include spinach, komatsuna, lettuce, cabbage and Chinese cabbage. Fruit vegetables are tomato, cucumber, eggplant and the like.

  In the example described below, spinach is assumed as a plant to be cultivated. Spinach is cultivated in the fall and spring in the open ground, but can be cultivated all year round by adjusting the cultivation environment in the agricultural house 30. When cultivating throughout the year, the curtain system 10 is necessary to adjust the solar radiation.

  The outer shell 20 includes a plurality of frames 21 standing on the ground and a covering body 22 supported by the frames 21. In the configuration example shown in FIG. 1, each of the plurality of frames 21 is formed in an arch shape by a pair of linear supports 211 standing on the ground and an arcuate bridge 212 that integrally connects the upper ends of the pair of supports 211. Has been.

  The frame 21 is formed of a metal pipe. As the metal, surface-treated aluminum, steel with zinc coating, or the like is selected. The plurality of frames 21 are arranged in a line in a direction substantially perpendicular to the surface surrounded by the frame 21. The covering 22 is a transparent synthetic resin film and covers the plurality of frames 21 arranged in a line. Part of the covering 22 is provided with an opening used for a window, an opening used for an entrance and the like, and the like.

  The outer shell 20 described above has a pair of side walls 23 corresponding to the support 211, a roof 24 corresponding to the bridge 212, and a pair of end walls 25 corresponding to both ends of the frame 21 aligned in a row. The opening used for the window is provided in the side wall 23, and the opening used for the doorway is provided in the wife wall. The outer shell 20 as a whole is formed in a shape that protrudes upward in a cross section that intersects a direction in which a plurality of frames 21 are arranged in a line. The plurality of frames 21 are connected to each other in the direction aligned in a row.

  The outer shell 20 usually has a dimension in a direction in which a plurality of frames 21 are arranged in a row larger than a dimension in a direction in which a pair of supports 211 constituting one frame 21 is arranged. Therefore, hereinafter, the direction in which the plurality of frames 21 are arranged is referred to as the longitudinal direction of the outer shell 20. That is, the outer shell 20 is formed in a shape that protrudes upward in a cross section orthogonal to the longitudinal direction. The bridge 212 is not limited to an arc shape, and may be formed in an inverted V shape, for example. The covering 22 may be glass as long as it is transparent.

  The curtain system 10 is arrange | positioned in the interior space of the outer shell 20, as shown in FIG. The curtain system 10 includes a first curtain 11 and a second curtain 12. The first curtain 11 and the second curtain 12 are arranged so as to cover approximately half of the area of the roof 24 in a cross section intersecting the longitudinal direction of the outer shell 20. The first curtain 11 and the second curtain 12 are synthetic resin films or nets and have a function of attenuating sunlight. The transmissivity of the first curtain 11 and the second curtain 12 is set to 65% or more and 75% or less, for example. Note that the light transmittance may be set smaller. For example, polyolefin is selected as the material forming the first curtain 11 and the second curtain 12.

  In a cross section that intersects the longitudinal direction of the outer shell 20, the first fixed end 111 that is one end of the first curtain 11 is fixed at a fixed position in the center of the outer shell 20, and the first end that is the other end. The 1 movable end portion 112 is disposed so as to be movable between the central portion of the outer shell 20 and the first peripheral portion. Further, in the cross section intersecting with the longitudinal direction of the outer shell 20, the second fixed end 121, which is one end of the second curtain 12, is fixed at a fixed position in the center of the outer shell 20, and at the other end. The certain 2nd movable end part 122 is arrange | positioned so that a movement between the center part of the outer shell 20 and a 2nd peripheral part is possible.

  The first peripheral portion and the second peripheral portion mean peripheral portions opposite to each other with respect to the central portion of the outer shell 20 in a cross section intersecting with the longitudinal direction of the outer shell 20. In other words, the central portion of the outer shell 20 in the cross section intersecting the longitudinal direction of the outer shell 20 is near the top of the roof 24 in the outer shell 20, and the peripheral portion is near the boundary between the side wall 23 and the roof 24 in the outer shell 20. is there. Note that the top of the roof 24 means a portion where the height of the outer shell 20 is substantially maximum. In the following, the terms “right” and “left” correspond to “right” and “left” in FIG. Further, the right side wall 23 in FIG. 2 is called a right side wall 231, and the left side wall 23 is called a left side wall 232.

  The curtain system 10 includes a first beam 13 provided between two locations of the frame 21 and a second beam 14 provided between the first beam 13 and the frame 21. In other words, the first beam 13 is installed between the vicinity of the upper end of the right side wall 231 and the portion on the left side of the top of the roof 24 in one frame 21. The second beam 14 is installed between the vicinity of the upper end of the left side wall 232 in the same frame 21 and the intermediate portion of the first beam 13. The first beam 13 and the second beam 14 are formed of metal pipes similarly to the frame 21, and are provided so as to correspond to each of the plurality of frames 21. However, it is not essential that the first beam 13 and the second beam 14 have a one-to-one correspondence with the frame 21.

  For example, as shown in FIG. 3, a joint 19 is used in a portion where the first beam 13 is attached to the frame 21. The joint 19 includes a first grip 191 that wraps around the frame 21 and a second grip 192 into which one end of the first beam 13 is inserted. The first grip 191 and the second grip 192 are coupled so as to be able to swing by a connecting tool 193 using bolts and nuts. Further, the connector 193 adjusts the force with which the first grip 191 tightens the frame 21. The second grip 192 adjusts the degree to which the second grip 192 tightens the first beam 13 by a fastener 194 using bolts and nuts.

  By using the joint 19 having the above-described configuration, the first beam 13 is attached to the frame 21. The joint 19 is used in the portion where the second beam 14 is attached to the first beam 13 as in the portion where the first beam 13 is attached to the frame 21.

  In a cross section that intersects the longitudinal direction of the outer shell 20, the first beam 13 is disposed so as to incline downward from the vicinity of the top of the roof 24 toward the right side wall 231, and the second beam 14 extends from the vicinity of the top of the roof 24 to the left side wall. It arrange | positions so that it may descent toward 232. The 1st beam 13 and the 2nd beam 14 are arrange | positioned so that the angle with respect to a horizontal surface may become substantially equal. The lower end of the first beam 13 and the lower end of the second beam 14 are attached to the frame 21 at substantially the same height position. Furthermore, it is desirable that the portion where the second beam 14 is attached to the first beam 13 is in the vicinity immediately below the top of the roof 24 (or to the right from directly below).

  The positional relationship described above is not essential, but if the positional relationship described above is used as a constraint, the work of assembling the agricultural house 30 at the site is facilitated. That is, the lower ends of the first beam 13 and the second beam 14 are set at the same height, the position to be attached to the frame 21 is determined, and the length dimensions of the first beam 13 and the second beam 14 are determined to be constant dimensions. In this case, the positions of the upper ends of the first beam 13 and the second beam 14 are automatically determined. Further, the inclination angles of the first beam 13 and the second beam 14 with respect to the horizontal plane are substantially equal.

  The inclination angle of the first beam 13 and the second beam 14 with respect to the horizontal plane is determined by the positions of the lower ends of the first beam 13 and the second beam 14 and the length dimensions of the first beam 13 and the second beam 14. On the left side of the portion where the second beam 14 is attached to the first beam 13 in the state where the agricultural house 30 is assembled, the first fixed end 111 of the first curtain 11 and the second fixed end of the second curtain 12 A part 121 is provided. That is, when the second beam 14 is attached to the first beam 13 near the top of the roof 24, the first fixed end 111 and the second fixed end are cross-sectionally crossed in the longitudinal direction of the outer shell 20. The part 121 is located on the left side from directly below the top of the roof 24.

  The first fixed end portion 111 of the first curtain 11 is attached to the first attachment bar 15 fixed across the plurality of first beams 13, and the second fixed end portion 121 of the second curtain 12 is attached to the plurality of first beams. It is attached to a second attachment bar 16 that is fixed across the two beams 14. The first mounting bar 15 is located on the left side of the second mounting bar 16. Therefore, the second mounting bar 16 is disposed at a portion closer to the top of the roof 24 than the first mounting bar 15 in the cross section intersecting the longitudinal direction of the outer shell 20. The second mounting bar 16 can be fixed to the first beam 13 and can be fixed so as to straddle the first beam 13 and the second beam 14.

  The first movable bar 17 is coupled to the first movable end 112 of the first curtain 11, and the second movable bar 18 is coupled to the second movable end 122 of the second curtain 12. The first movable bar 17 moves on the first beam 13, and the second movable bar 18 moves on the second beam 14. Therefore, when the first movable bar 17 moves, the distance between the first movable end 112 and the first fixed end 111 changes, and when the second movable bar 18 moves, the second movable end 122 and the second fixed end are moved. The distance from the end 121 changes.

  In the configuration example shown in FIG. 2, the first movable bar 17 is rotatable, and a rotation in a direction to wind up the first curtain 11 and a rotation in a direction to unwind the first curtain 11 are selected. Similarly, the second movable bar 18 is rotatable, and a rotation in a direction to wind up the second curtain 12 and a rotation in a direction to unwind the second curtain 12 are selected. Here, “unwinding” may be rephrased as “feeding out”.

  When the first movable bar 17 rotates in a direction to wind up the first curtain 11, the first movable bar 17 moves in a direction closer to the first mounting bar 15 as the first movable bar 17 winds up the first curtain 11. That is, the first movable end 112 of the first curtain 11 moves toward a converged state in which the first curtain 11 is gathered at a portion close to the first mounting bar 15. Further, when the second movable bar 18 rotates in the direction to wind up the second curtain, the second movable bar 18 moves in a direction to approach the second mounting bar 16 as the second movable bar 18 winds up the second curtain 12. . That is, the second movable end 122 of the second curtain 12 moves toward a converged state in which the second curtain 12 is gathered at a portion close to the second mounting bar 16.

  On the other hand, when the first movable bar 17 rotates to unwind the first curtain 11, the first movable bar 17 moves away from the first mounting bar 15 as the first movable bar 17 unwinds the first curtain 11. To do. In other words, the first movable end 112 of the first curtain 11 is directed toward the unfolded state in which the first curtain 11 is expanded between the center and the first peripheral portion in the cross section intersecting the longitudinal direction of the outer shell 20. Moving. Similarly, when the second movable bar 18 rotates in the direction to unwind the second curtain, the second movable bar 18 moves away from the second mounting bar 16 as the second movable bar 18 unwinds the second curtain 12. To do. That is, the second movable end portion 122 of the second curtain 12 is directed to the unfolded state in which the second curtain 12 is spread between the center portion and the second peripheral portion in the cross section intersecting the longitudinal direction of the outer shell 20. Moving. In FIG. 2, the first curtain 11 and the second curtain 12 indicated by solid lines represent a converged state, and the first curtain 11 and the second curtain 12 indicated by a broken line represent an intermediate state between the converged state and the deployed state.

  Since the first curtain 11 is disposed across the plurality of first beams 13, the first movable bar 17 moves while being supported on the plurality of first beams 13. Further, since the second curtain 12 is disposed across the plurality of second beams 14, the second movable bar 18 moves while being supported by the plurality of second beams 14. Each of the 1st curtain 11 and the 2nd curtain 12 changes the area which covers between the center part and peripheral part in the cross section which cross | intersects the longitudinal direction of the outer shell 20. FIG. About each of the 1st curtain 11 and the 2nd curtain 12, the state where the covering area is the maximum is a deployment state, and the state where the covering area is the minimum is a convergence state. That is, the first curtain 11 and the second curtain 12 can be opened and closed between the deployed state and the converged state.

  By the way, as described above, the first mounting bar 15 is located on the left side of the second mounting bar 16 in the cross section intersecting with the longitudinal direction of the outer shell 20, and the second mounting bar 16 is directly below the top of the roof 24. Located in the vicinity. Therefore, the vicinity of the first fixed end portion 111 of the first curtain 11 and the vicinity of the second fixed end portion 121 of the second curtain 12 overlap vertically in a cross section that intersects the longitudinal direction of the outer shell 20.

  The curtain system 10 is configured to satisfy the following relationship. That is, in the curtain system 10, the first curtain 11 is within the range of the first mounting bar 15 and the first curtain 11 within the converged state, and the first curtain 11 is within the range of the first mounting bar 15 with the second curtain 12 converged. It is comprised so that it may be settled in the range directly under the top part of the roof 24.

  Since the curtain system 10 is configured as described above, when the first curtain 11 and the second curtain 12 are both in a converged state, they are arranged in a vertical direction in a cross section that intersects the longitudinal direction of the outer shell 20. When both the first curtain 11 and the second curtain 12 are in a converged state, the second curtain 12 is included in the vertical direction when the second curtain 12 is included in the projection plane obtained by projecting the first curtain 11 in the vertical direction. The first curtain 11 may be included in the projected projection surface. Note that it is desirable that the ranges of the first curtain 11 in the converged state and the second curtain 12 in the converged state projected in the vertical direction match.

  When the first curtain 11 and the second curtain 12 are both converged, the horizontal dimension occupied by the first curtain 11 and the second curtain 12 is the case where the first curtain 11 and the second curtain 12 are arranged side by side. Therefore, it is smaller when arranged vertically as in the configuration example shown in FIG. Therefore, the area of the shadow formed by the first curtain 11 and the second curtain 12 blocking the sunlight is that of the configuration example shown in FIG. 2 rather than the configuration in which the first curtain 11 and the second curtain 12 are arranged side by side. Is smaller. In other words, when the first curtain 11 and the second curtain 12 are in a converged state, the first curtain 11 and the second curtain 12 are arranged in the vertical direction as in the configuration example shown in FIG. 2 rather than the configuration in which the first curtain 11 and the second curtain 12 are arranged side by side. The utilization factor of sunlight in the field 31 is increased.

  By the way, since the 1st movable bar 17 and the 2nd movable bar 18 may reach several tens of meters, the rotational force to the 1st movable bar 17 and the 2nd movable bar 18 can be given from a power source instead of human power. desirable. Therefore, the curtain system 10 includes a first drive device 401 that applies a rotational force to the first movable bar 17 and a second drive device 402 that applies a rotational force to the second movable bar 18. Since the first driving device 401 and the second driving device 402 have the same configuration, only the first driving device 401 will be described below with reference to FIG.

  The first drive device 401 includes a motor 41 as a power source and a speed reducer 42 that increases torque from the motor 41, and the first movable bar 17 is coupled to the output shaft 421 of the speed reducer 42. The motor 41 and the speed reducer 42 are accommodated in the housing 43. Further, the first drive device 401 includes a holder 44 coupled to the housing 43. The first movable bar 17 is coupled to the output shaft 421 of the speed reducer 42.

  The holder 44 holds two rollers 45 arranged on both sides of the output shaft 421 of the speed reducer 42 and two rollers 46 arranged so as to face each of the two rollers 45. The two rollers 45 are disposed on opposite sides of the output shaft 421, and the rotation centers of the two rollers 45 are aligned with the rotation center of the output shaft 421 in a substantially straight line. The rotation centers of the two rollers 45 and the rotation centers of the two rollers 46 are arranged at positions corresponding to the vertices of the trapezoid. This trapezoid can be regarded as an isosceles trapezoid having a straight line connecting the rotation centers of the two rollers 45 as a lower base and a straight line connecting the rotation centers of the two rollers 46 as an upper base.

  The first drive device 401 includes a rail 47 erected on the outer shell 20, and the rail 47 is sandwiched between two rollers 45 and two rollers 46. With this configuration, the rollers 45 and 46 can travel along the rail 47. The rail 47 is a metal pipe and is disposed substantially parallel to the first beam 13. That is, in the left-right direction, the rail 47 is disposed so as to incline downward from the vicinity of the top of the roof 24 toward the right side wall 231. Each of the two rollers 45 includes a groove 451 in which a part of the rail 47 is fitted, and each of the two rollers 46 includes a groove 461 in which the part of the rail 47 is fitted. Therefore, the rail 47 is prevented from falling off.

  As shown in FIG. 5, the rail 47 of the first drive device 401 has one end connected to the frame 21 and the other end attached to a guide frame 48 provided on the outer shell 20. In addition, the rail 47 of the second driving device 402 has one end connected to the rail 47 of the first driving device 401 and the other end attached to a guide frame 48 provided on the outer shell 20. The joint 19 described above is provided at a portion where the rail 47 is coupled to the frame 21 or the rail 47 of the second driving device 402.

  With the above-described configuration, when the motor 41 rotates in the direction in which the first curtain 11 is wound around the first movable bar 17, the first movable bar 17 is attached to the first attachment as the first movable bar 17 winds up the first curtain 11. It moves in the direction approaching the bar 15, and the first curtain 11 approaches the converged state. That is, when the motor 41 rotates, the rollers 45 and 46 move along the rail 47 toward the vicinity of the top of the roof 24.

  On the other hand, when the motor 41 rotates in the direction to unwind the first curtain 11 from the first movable bar 17, the first movable bar 17 moves from the first mounting bar 15 as the first movable bar 17 unwinds the first curtain 11. It moves in the direction of leaving, and the first curtain 11 approaches the deployed state. That is, when the motor 41 rotates, the rollers 45 and 46 move away from the top of the roof 24 along the rail 47. Regardless of whether the first curtain 11 is in the converged state or the first curtain 11 is in the deployed state, tension is applied to the first curtain 11 by the load of the first movable bar 17, the motor 41, the speed reducer 42, and the like. . Therefore, the first curtain 11 is kept in a stretched state.

  Incidentally, the first drive device 401 is provided only on one end side of the first movable bar 17, and the movement direction of this one end of the first movable bar 17 is limited by the rollers 45 and 46 and the rail 47. On the other hand, the configuration that restricts the moving direction of the first movable bar 17 is not provided on the other end side of the first movable bar 17. Therefore, when the first movable bar 17 winds up the first curtain 11, the other end of the first movable bar 17 may swing with respect to the one end provided with the first driving device 401.

  In addition, a relatively large load is applied to one end portion of the first movable bar 17 from the first driving device 401, whereas only the own weight acts on the other end portion of the first movable bar 17. The tension acting on the first movable bar 17 is different at one end and the other end. Therefore, when the first curtain 11 is wound around the first movable bar 17, there is a possibility that a difference in winding density occurs between one end and the other end of the first movable bar 17. The winding density is the mass per volume of the first curtain 11, and the winding density increases as the degree of adhesion between the layers of the first curtain 11 wound around the first movable bar 17 increases (that is, as the slack is less). Become.

  Due to the above-described causes, in the first movable bar 17, the amount of winding up the first curtain 11 between the one end portion where the first drive device 401 is provided and the other end portion where the first drive device 401 is not provided is set. Differences can occur. As a result, the first curtain 11 may be wound around the first movable bar 17 in a biased manner.

  In order to wind the first curtain 11 around the first movable bar 17 without deviation, it is necessary to suppress the deflection of the first movable bar 17 and the bias of the tension acting on the first curtain 11. Therefore, it is conceivable to add a weight having a relatively large mass to the other end of the first movable bar 17 opposite to the one end where the first driving device 401 is provided. The weight may be filled in the first movable bar 17. In addition to the weight, if a spring, a string-like member, or the like is used, it is considered that the swing of the first movable bar 17 can be suppressed and the uneven winding density of the first curtain 11 can be suppressed. However, even if these techniques are used, it is not possible to completely prevent the swing of the first movable bar 17 and to make the winding density of the first curtain 11 completely uniform.

  When the first curtain 11 is wound around the first movable bar 17 in a biased manner, the load acting on the output shaft 421 of the speed reducer 42 increases, and finally the first curtain 11 is wound around the first movable bar 17. There is a possibility that the motor 41 will fall into an overload state. That is, the first curtain 11 cannot be shifted to the converged state, and the motor 41 may be damaged due to overload.

  In order to prevent such an event from occurring, one end of the rail 47 of the first driving device 401 and one end of the rail 47 of the second driving device 402 are respectively arranged along the longitudinal direction of the outer shell 20. 48 is attached. As shown in FIG. 5, one end of the rail 47 includes a slider 471 so as to be movable with respect to the guide frame 48. That is, a cylindrical slider 471 is provided at the lower end of the rail 47, and the guide frame 48 is passed through the slider 471. The slider 471 is formed of a member different from the rail 47 and is coupled to the rail 47 while being inserted into the lower end portion of the rail 47.

  The inner dimension of the slider 471 and the outer dimension of the guide frame 48 are determined so that the slider 471 can move along the guide frame 48. The upper end of the rail 47 is connected to the frame 21 constituting the outer shell 20 in a state where the lower end of the rail 47 can move in the extending direction of the guide frame 48. That is, the upper end portion of the rail 47 is connected to the frame 21 so as to allow an angle change using, for example, the joint 19 described above.

  Even if the first curtain 11 is biased and wound around the first movable bar 17 by the above-described configuration, the rail 47 moves along the guide frame 48, so that the angle between the rail 47 and the first movable bar 17 is increased. It can be kept almost constant. That is, an increase in load acting on the output shaft 421 of the speed reducer 42 is suppressed, and the possibility that the motor 41 falls into an overload state is reduced. In other words, the possibility that the motor 41 stops in the process in which the first curtain 11 is wound around the first movable bar 17 is reduced, and the first movable end 112 of the first curtain 11 is moved to a position desired by the user. It becomes possible to make it.

  The first driving device 401 has been described so far, but the second driving device 402 is configured in the same manner. Therefore, regarding the second driving device 402, the description related to the first driving device 401 is read as follows. That is, the first curtain 11 is read as the second curtain 12, the first beam 13 is read as the second beam 14, the first movable bar 17 is read as the second movable bar 18, and the first movable end 112 is read as the second movable end 122, respectively. Just do it.

  As described above, when both the first curtain 11 and the second curtain 12 are stored, the first curtain 11 and the second curtain 12 move up and down in a cross section that intersects the longitudinal direction of the outer shell 20. Since it is lined up, it is possible to increase the utilization rate of sunlight. Note that the motor 41 of the first drive device 401 and the motor 41 of the second drive device 402 can be operated individually, and the first curtain 11 and the second curtain 12 do not need to be interlocked.

  Further, the first drive device 401 desirably stops the motor 41 in a state in which the first curtain 11 is converged, with the first mounting bar 15 and the first movable bar 17 being separated from each other by a predetermined distance. Similarly, it is desirable that the second drive device 402 stops the motor 41 in a state where the second curtain 12 is converged while the second mounting bar 16 and the second movable bar 18 are separated from each other by a predetermined distance.

  The predetermined distance here is, for example, not less than 20 cm and not more than 50 cm. That is, in the converged state of the first curtain 11, the first curtain 11 is not sandwiched between the first beam 13 and the frame 21, and in the converged state of the second curtain 12, the second curtain 12 is in the first beam 13. And the second beam 14 are provided with a margin not to be sandwiched. When both the first curtain 11 and the second curtain 12 are in a converged state, the first curtain 11 and the second curtain 12 are arranged vertically and intersect with the longitudinal direction of the outer shell 20 (that is, The motor 41 is controlled so as to occupy a similar range in the left-right direction).

  As shown in FIG. 6, the first drive device 401 and the second drive device 402 are connected to an operation device 49 that instructs operation and stop of the motor 41 and the rotation direction of the motor 41. The operation device 49 includes a switch that gives an instruction to the motor 41. The user can adjust the amount of the first curtain 11 and the second curtain 12 to be expanded by operating the switch, and can adjust the solar radiation applied to the field 31. It is desirable that the movement of the first movable bar 17 and the second movable bar 18 be automatically stopped in the converged state of the first curtain 11 and the converged state of the second curtain 12. Therefore, a clutch that mechanically stops transmission of rotational force from the speed reducer 42 to the first movable bar 17 and the second movable bar 18, or a switch that electrically stops the motor 41 by detecting the position is added. May be. In the case of using a clutch, the clutch lever is operated at a position to be stopped. In the case of using a switch, the position may be detected by a limit switch or the like.

  By the way, as shown in FIG. 7, the heat insulating sheet 26 may be overlaid on at least one of the first curtain 11 and the second curtain 12. For example, the heat insulating sheet 26 is integrally stacked on each of the first curtain 11 and the second curtain 12. The heat insulating sheet 26 is overlaid on the upper surface of the first curtain 11 in the unfolded state of the first curtain 11, and is overlaid on the upper surface of the second curtain 12 in the unfolded state of the second curtain 12. In other words, the heat insulating sheet 26 is located between the first curtain 11 and the covering body 22 in the unfolded state of the first curtain 11, and between the second curtain 12 and the covering body 22 in the unfolded state of the second curtain 12. Located in. It is desirable that the heat insulating sheet 26 has a function of suppressing heat flow from the space on the field 31 side to the outside.

  Further, the heat insulating sheet 26 may be a member independent of the first curtain 11 and the second curtain 12. In this configuration, similarly to the first curtain 11 and the second curtain 12, it is possible to change the area covering the central portion and the peripheral portion in the cross section intersecting the longitudinal direction of the outer shell 20. Therefore, when there is a possibility that the internal temperature of the outer shell 20 is lowered at night in the winter season, it is possible to increase the area covered by the heat insulating sheet 26 and suppress the decrease in the ambient temperature of the plant. Moreover, if the heat insulation is unnecessary during the day when the solar radiation is obtained, the area covered with the heat insulation sheet 26 may be reduced.

  The curtain system 10 configured as described above includes a first beam 13 and a second beam 14 disposed inside the outer shell 20, and the first curtain 11 moves on the first beam 13, The two curtains 12 move on the second beam 14. Therefore, the lower side of the first beam 13 and the second beam 14 is not particularly utilized. Therefore, at least one of the first beam 13 and the second beam 14 may be used for attaching an accessory facility of the agricultural house 30.

  For example, as shown in FIG. 8, a pipe 52 for supplying water to a nozzle 51 for spraying mist onto a plant cultivated in a field 31 is attached to at least one of the first beam 13 and the second beam 14. It may be done. When the pipe 52 includes the main pipe 521 and a plurality of branch pipes 522, for example, the main pipe 521 is attached to the frame 21, and the plurality of branch pipes 522 are respectively connected to the first beam 13 and the second beam 14. It is attached to at least one of these. The main pipe 521 may be arranged so as to cross between adjacent frames 21. In this configuration, the branch pipe 522 branches from the main pipe 521 and supplies water to the nozzle 51. Mist is used to lower the plant and the ambient temperature of the plant by taking away the heat of vaporization. Moreover, mist may be used for the spraying of a chemical | medical agent.

  The attached equipment is not limited to a device for spraying mist. The accessory equipment may be, for example, a watering device or a blower fan. The watering device has the same configuration as the device for spraying mist, but the nozzle can be omitted. Further, the accessory equipment such as a blower fan may be configured to be suspended from at least one of the first beam 13 and the second beam 14. A power cable provided in this type of accessory equipment is laid along at least one of the first beam 13 and the second beam 14.

  The curtain system 10 described above has a function of adjusting the amount of sunlight incident through the roof 24. Since sunlight also enters from the side wall 23 of the outer shell 20, a sheet-like side curtain 27 is disposed on the outer shell 20 in order to adjust the amount of sunlight that passes through the side wall 23. The side curtain 27 is disposed inside the outer shell 20 so as to correspond to the right side wall 231 and the left side wall 232, respectively. The side curtain 27 is formed of the same material as the first curtain 11 or the second curtain 12.

  The side curtain 27 is configured such that one end serving as an upper end is attached to the outer shell 20 and the other end moves in the vertical direction along the side wall 23. It is desirable that one end of the side curtain 27 is attached to the first beam 13 or the second beam 14. Moreover, it is desirable that one end of the side curtain 27 is also attached to the frame 21. The other end portion of the side curtain 27 is wound around the winding shaft 271. When the winding shaft 271 winds up the side curtain 27, the other end portion of the side curtain 27 moves upward, and the winding shaft 271 moves the side curtain 27. When unrolled, the other end of the side curtain 27 moves downward. The winding shaft 271 can be manually rotated, but is rotated using a driving device including a motor, similarly to the first movable bar 17 of the first curtain 11 and the second movable bar 18 of the second curtain 12. It is desirable to make it.

  It is desirable that the upper end portion of the side curtain 27 corresponding to the right side wall 231 is arranged along the lower end portion of the first beam 13 below the first beam 13. In addition, it is desirable that the upper end portion of the side curtain 27 corresponding to the left side wall 232 is arranged along the lower end portion of the second beam 14 below the second beam 14. That is, it is desirable that the upper end portion of the side curtain 27 arranged corresponding to the right side wall 231 is arranged so as to overlap vertically with the first movable end portion 112 when the first curtain 11 is in the unfolded state. In addition, it is desirable that the upper end portion of the side curtain 27 disposed corresponding to the left side wall 232 is disposed so as to overlap vertically with the second movable end portion 122 when the second curtain 12 is in the unfolded state.

  When the above-described configuration is adopted, in each deployed state of the first curtain 11 and the second curtain 12, a gap for sunlight to enter is not formed between the side curtain 27 and the amount of sunlight incident is suppressed. Increases effectiveness. In short, in the unfolded state of the first curtain 11, it is possible to suppress sunlight from entering between the first curtain 11 and the side curtain 27, and in the unfolded state of the second curtain 12, the second curtain 12 and the side curtain 27. It is suppressed that sunlight leaks from between and enters.

  A side window 28 is provided along the side wall 23 outside the outer shell 20. The side window 28 is sheet-like and does not have air permeability, and is arranged so as to correspond to the opening formed in the side wall 23 of the outer shell 20. The side window 28 has the same configuration as that of the side curtain 27, one end serving as the upper end of the side window 28 is fixed to the frame 21, and the other end of the side window 28 is wound around the winding shaft 281. Therefore, when the side window 28 is wound around the winding shaft 281, the opening of the side wall 23 is opened, and when the side window 28 is unwound from the winding shaft 281, the opening of the side wall 23 is closed. In the configuration example shown in FIG. 8, two side windows 28 are arranged above and below one side wall 23, but one side window 28 may correspond to one side wall 23.

  In the configuration example described above, a configuration in which the first movable bar 17 winds up the first curtain 11 and the second movable bar 18 winds up the second curtain 12 is employed. Therefore, the position of the housing 43 of the first driving device 401 is determined by the amount by which the first curtain 11 is extended, and the position of the housing 43 of the second driving device 402 is determined by the amount by which the second curtain 12 is extended. The first curtain 11 and the second curtain 12 may have a bellows shape in which mountain folds and valley folds are repeated. When the 1st curtain 11 and the 2nd curtain 12 are bellows-like, it can implement | achieve an expansion | deployment state and a contracted state using a wire similarly to a roman shade type curtain.

  The agricultural house 30 described above includes the outer shell 20 and the curtain system 10. The outer shell 20 is disposed so as to surround the farm field 31. The curtain system 10 includes a first curtain 11 and a second curtain 12 that are disposed above the farm field 31. The 1st curtain 11 is movable so that the 1st movable end part 112 which is the other edge part may change distance with respect to the 1st fixed edge part 111 which is one edge part. The second curtain 12 is movable such that the second movable end 122, which is the other end, changes the distance with respect to the second fixed end 121, which is one end. When both the first curtain 11 and the second curtain 12 are in the unfolded state, the first curtain 11 and the second curtain 12 cover different parts in the cross section intersecting with the longitudinal direction of the outer shell 20, and when both are in the converged state, the longitudinal direction of the outer shell 20 It is arranged so as to be lined up and down in a cross section intersecting with.

  Moreover, the curtain system 10 of the agricultural house 30 is attached to the outer shell 20 of the agricultural house 30 arranged so as to surround the farm field 31. The curtain system 10 includes a first curtain 11 and a second curtain 12. The 1st curtain 11 is movable so that the 1st movable end part 112 which is the other edge part may change distance with respect to the 1st fixed edge part 111 which is one edge part. The second curtain 12 is movable such that the second movable end 122, which is the other end, changes the distance with respect to the second fixed end 121, which is one end. When both the first curtain 11 and the second curtain 12 are in the unfolded state, the first curtain 11 and the second curtain 12 cover different parts in the cross section intersecting the longitudinal direction of the outer shell, and when both are in the converged state, the longitudinal direction of the outer shell. It is arranged so as to be lined up and down in a cross section intersecting with.

  According to this configuration, in the converged state where both the first curtain 11 and the second curtain 12 are opened, the first curtain 11 and the second curtain 12 are arranged vertically, so that the area that blocks sunlight in the converged state is reduced. Has the advantage of becoming possible. That is, when the first curtain 11 and the second curtain 12 are arranged side by side in the converged state, it is possible to reduce the area that blocks sunlight, and as a result, the utilization rate of sunlight is reduced. Rise.

  The agricultural house 30 preferably includes the first beam 13 and the second beam 14. The first beam 13 is installed between two portions of the frame 21 constituting the outer shell 20 so as to incline downward toward one side wall of the outer shell 20 in a cross section intersecting the longitudinal direction of the outer shell 20. The second beam 14 is installed between the first beam 13 and the frame 21 so as to incline downward toward the other side wall of the outer shell 20 in a cross section intersecting the longitudinal direction of the outer shell 20. The first movable end portion 112 in the first curtain 11 is movable along the first beam 13. The second movable end 122 in the second curtain 12 is movable along the second beam 14.

  According to this configuration, the first curtain 11 is opened and closed by moving the first movable end 112 of the first curtain 11 along the first beam 13, and the second movable end 122 of the second curtain 12 is the first movable end 122. The second curtain 12 is opened and closed by moving along the two beams 14. Further, since the first beam 13 is installed on the frame 21 and the second beam 14 is installed between the frame 21 and the first beam 13, the first curtain 11 and the second curtain 12 are moved up and down in the converged state. It is possible to line up.

  The agricultural house 30 preferably includes the first movable bar 17, the second movable bar 18, the first drive device 401, and the second drive device 402. The first movable bar 17 is attached to the first movable end 112 of the first curtain 11. The second movable bar 18 is attached to the second movable end 122 of the second curtain 12. The first driving device 401 is coupled to the first movable bar 17 so as to move the first movable bar 17 along the first beam 13. The second driving device 402 is coupled to the second movable bar 18 so as to move the second movable bar 18 along the second beam 14.

  According to this configuration, the first curtain 11 is opened and closed by moving the first movable bar 17 attached to the first curtain 11 by the first driving device 401. Further, the second curtain 12 is opened and closed by moving the second movable bar 18 attached to the second curtain 12 by the second driving device 402. That is, the first curtain 11 and the second curtain 12 can be opened and closed independently.

  In the agricultural house 30, each of the first movable bar 17 and the second movable bar 18 is rotatable. The first movable bar 17 moves in a direction approaching the first fixed end 111 by rotating in the direction in which the first curtain 11 is wound, and the first movable bar 17 in the direction in which the first curtain 11 is unwound. A state of moving away from the fixed end 111 is selected. The second movable bar 18 moves in a direction approaching the second fixed end portion 121 by rotating in the direction in which the second curtain 12 is wound, and the second movable bar 18 in the direction in which the second curtain 12 is unwound. A state of moving away from the fixed end 121 is selected.

  According to this configuration, when the winding amount of the first curtain 11 by the first movable bar 17 changes, the area where the first curtain 11 blocks sunlight is changed. Moreover, when the winding amount of the 2nd curtain 12 by the 2nd movable bar 18 changes, the area which the 2nd curtain 12 shields sunlight changes.

  Each of the first driving device 401 and the second driving device 402 preferably includes a rail 47, a roller 45, a roller 46, and a motor 41. The rail 47 is constructed on the outer shell 20. The roller 45 and the roller 46 travel along the rail 47. The motor 41 is a power source. The motor 41 provided in the first drive device 401 opens and closes the first curtain 11 between the deployed state and the converged state, and the motor 41 provided in the second drive device 402 provides the second curtain 12 between the deployed state and the converged state. Open and close with.

  According to this configuration, the first curtain 11 and the second curtain 12 can be opened and closed without using human power by using the motor 41 as a power source.

  Each of the first driving device 401 and the second driving device 402 preferably includes a rail 47, a roller 45, a roller 46, and a motor 41. The rail 47 is constructed on the outer shell 20. The roller 45 and the roller 46 travel along the rail 47. The motor 41 is a power source. The first driving device 401 is coupled to the first movable bar 17 so as to transmit the rotational force of the motor 41, and the rail 47 so that a load including a downward component acts on the first curtain 11 from the first movable bar 17. Is arranged. The second driving device 402 is coupled to the second movable bar 18 so as to transmit the rotational force of the motor 41, and the rail 47 so that a load including a downward component acts on the second curtain 12 from the second movable bar 18. Is arranged.

  According to this configuration, when the motor 41 of the first driving device 401 rotates, the winding amount of the first curtain 11 around the first movable bar 17 changes, and the motor 41 of the second driving device 402 rotates. As a result, the amount of winding of the second curtain 12 around the second movable bar 18 changes. In addition, since the rail 47 of the first driving device 401 is arranged so that a load acts on the first curtain 11 from the first movable bar 17, a tension acts on the first curtain 11 and the rotation of the motor 41. Accordingly, the first movable bar 17 moves. Further, since the rail 47 of the second driving device 402 is arranged so that a load acts on the second curtain 12 from the second movable bar 18, a tension acts on the second curtain 12, and the motor 41 rotates. Accordingly, the second movable bar 18 moves.

  In the agricultural house 30, the outer shell 20 includes a guide frame 48 disposed along the longitudinal direction. One end of the rail 47 includes a slider 471 attached to the guide frame 48 so as to be movable in the longitudinal direction with respect to the guide frame 48.

  According to this configuration, even when the first curtain 11 is biased and wound around the first movable bar 17, the longitudinal force of the first movable bar 17 can be obtained by the slider 471 moving along the guide frame 48. Can escape. As a result, the first curtain 11 can be wound around the first movable bar 17 without stopping the motor 41 of the first drive device 401. Similarly, even when the second curtain 12 is biased and wound around the second movable bar 18, the slider 471 moves along the guide frame 48 to release the longitudinal force of the second movable bar 18. be able to. As a result, the second curtain 12 can be wound around the second movable bar 18 without stopping the motor 41 of the first drive device 401.

  The agricultural house 30 desirably includes side curtains 27 disposed on the first peripheral portion and the second peripheral portion of the outer shell 20, respectively. As for the side curtain 27, the fixed end part which is an upper end part stays in the fixed position of the outer shell 20, and the movable end part which is a lower end part can move up and down.

  According to this configuration, the incident amount of sunlight from the side surface of the outer shell 20 can be adjusted by the side curtain 27.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 10 Curtain system 20 Outer shell 30 Agricultural house 31 Field 11 First curtain 12 Second curtain 13 First beam 14 Second beam 17 First movable bar 18 Second movable bar 21 Frame 27 Side curtain 41 Motor 45 Roller 46 Roller 47 Rail 48 Guide frame 111 First fixed end portion 112 First movable end portion 121 Second fixed end portion 122 Second movable end portion 401 First driving device 402 Second driving device 471 Slider

Claims (9)

An outer shell arranged to surround the field,
A curtain system having a first curtain and a second curtain disposed above the field,
The first curtain is movable such that the first movable end that is the other end changes the distance with respect to the first fixed end that is one end.
The second curtain is movable so that the second movable end, which is the other end, changes the distance with respect to the second fixed end, which is one end,
When the first curtain and the second curtain are both in the unfolded state, they cover different parts in the cross section intersecting with the longitudinal direction of the outer shell, and when both are in the converged state, the longitudinal direction of the outer shell. Agricultural house characterized in that it is arranged so as to be lined up and down in a cross section intersecting with. A first beam constructed between two portions of the frame constituting the outer shell so as to be inclined downward toward one side wall of the outer shell in a cross section intersecting the longitudinal direction of the outer shell;
And a second beam constructed between the first beam and the frame so as to incline downward toward the other side wall of the outer shell in a cross section intersecting the longitudinal direction of the outer shell. ,
The first movable end of the first curtain is movable along the first beam;
The agricultural house according to claim 1, wherein the second movable end portion of the second curtain is movable along the second beam. A first movable bar attached to the first movable end of the first curtain;
A second movable bar attached to the second movable end of the second curtain;
A first drive coupled to the first movable bar to move the first movable bar along the first beam;
The agricultural house according to claim 2, further comprising a second driving device coupled to the second movable bar so as to move the second movable bar along the second beam. Each of the first movable bar and the second movable bar is rotatable,
The first movable bar moves in a direction approaching the first fixed end by rotating in a direction to wind up the first curtain, and rotates in a direction to unwind the first curtain. 1 is selected to move away from the fixed end,
The second movable bar moves in a direction to approach the second fixed end by rotating in a direction to wind up the second curtain, and rotates in a direction to unwind the second curtain. The agricultural house according to claim 3, wherein a state of moving away from the fixed end is selected. Each of the first drive device and the second drive device is:
A rail erected on the outer shell;
A roller that travels along the rail;
With a motor as a power source,
The motor included in the first driving device opens and closes the first curtain between the deployed state and the converged state,
The agricultural house according to claim 3, wherein the motor included in the second driving device opens and closes the second curtain between the deployed state and the converged state. Each of the first drive device and the second drive device is:
A rail erected on the outer shell;
A roller that travels along the rail;
With a motor as a power source,
The first driving device is coupled to the first movable bar to transmit a rotational force of the motor, and the rail includes a load including a downward component acting on the first curtain from the first movable bar. Is placed,
The second driving device is coupled to the second movable bar so as to transmit the rotational force of the motor, and the rail includes a load including a downward component acting on the second curtain from the second movable bar. The agricultural house according to claim 4. The outer shell includes a guide frame disposed along the longitudinal direction,
The agricultural house according to claim 6, wherein one end of the rail includes a slider attached to the guide frame so as to be movable in the longitudinal direction with respect to the guide frame. Further comprising side curtains respectively disposed on the first peripheral portion and the second peripheral portion of the outer shell,
The agriculture according to any one of claims 1 to 7, wherein the side curtain has a fixed end portion that is an upper end portion that remains in a fixed position of the outer shell, and a movable end portion that is a lower end portion is movable up and down. For house. A curtain system having a first curtain and a second curtain, which are attached to an outer shell of an agricultural house disposed so as to surround the field, and are disposed above the field;
The first curtain is movable such that the first movable end that is the other end changes the distance with respect to the first fixed end that is one end.
The second curtain is movable so that the second movable end, which is the other end, changes the distance with respect to the second fixed end, which is one end,
When the first curtain and the second curtain are both in the unfolded state, they cover different parts in the cross section intersecting with the longitudinal direction of the outer shell, and when both are in the converged state, the longitudinal direction of the outer shell. A curtain system for an agricultural house, characterized in that it is arranged so as to be lined up and down in a cross section intersecting with.

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