WO2023002518A1

WO2023002518A1 - Ventilation structure

Info

Publication number: WO2023002518A1
Application number: PCT/JP2021/026906
Authority: WO
Inventors: 雄一郎森
Original assignee: 株式会社ハイテム
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2023-01-26
Also published as: JPWO2023002518A1; CN117440752A; KR20240036499A

Abstract

A ventilation structure that causes natural ventilation by opening a ventilation opening (3) penetrating a wall (2) of a poultry house (1) as a livestock house during a power outage, the ventilation structure comprising: a ventilation door (4) that openably closes the ventilation opening (3) to open to the outside of the poultry house (1); an opening/closing arm (5) that extends from the ventilation door (4) into the poultry house (1); a first pulley (6) rotatably attached to the wall (2); a second pulley (7) attached to the first pulley (6); a first wire (8) that is attached at one end to the first pulley (6), wound at the middle part around the first pulley (6), and attached at the other end to the ventilation door (4); and a second wire (9) that is attached at one end to the second pulley (7) and attached at the other end to the tip of the opening/closing arm (5), wherein where the first pulley (6) is rotated in the direction in which the first wire (8) is fed, the second wire (9) is wound on the second pulley (7) and the ventilation door (4) opens the ventilation opening (3).

Description

ventilation structure

The present invention relates to a ventilation structure for opening the ventilation openings of livestock barns during power outages for natural ventilation.

In poultry houses in large poultry farms, ventilation fans are used to force ventilation in order to adjust the environment inside the poultry house. If the commercial power supply is interrupted (blackout) in such a poultry house, the ventilation fan will stop and the inside of the poultry house will not be able to be ventilated. There is a problem that it may damage the bird. In response to this problem, the applicant of the present application has proposed a ventilation structure that allows natural ventilation by opening the ventilation openings during power outages (for example, Patent Documents 1 and 2).

The technique of Patent Document 1 closes the ventilation opening with a curtain pulled up by a rope, and locks the other end of the rope with a locking member that is magnetically attached to an electromagnet. . When the locking member separates from the demagnetized electromagnet due to power failure, the other end of the rope is unlocked from the locking member, the curtain drops, and the ventilation opening is opened.

The technique of Patent Document 2 urges the ventilation door that closes the ventilation opening in the direction to open it, and inserts a key member into the latch that fixes the ventilation door to the ventilation opening so that the ventilation door does not open. This key member is connected by a wire to a weight whose drop is prevented by an electromagnet. Then, the demagnetization of the electromagnet due to the power failure causes the weight to drop, and the key member is pulled by the wire and pulled out of the latch, thereby opening the ventilation door and opening the ventilation port.

However, with the techniques of

Patent Documents

1 and 2, it is necessary to constantly supply power to the electromagnet during normal times, which increases the running cost of the poultry house. In addition, in the techniques of

Patent Documents

1 and 2, when the ventilation opening is closed after restoration of power failure, the rope is pulled to be locked by the locking member, or the ventilation door is closed against the urging force and then latched. It is necessary to insert the key member, and the recovery work is troublesome.

Japanese Patent No. 3420438 Japanese Patent No. 3626911

Therefore, in view of the above circumstances, the present invention can reduce the maintenance cost during normal times, can open the ventilation openings of livestock barns during power failure, and can easily close the ventilation openings after restoration of the power failure. The challenge is to provide a possible ventilation structure.

In order to solve the above problems, the ventilation structure according to the present invention includes:
"A ventilation structure that allows natural ventilation by opening the ventilation opening that penetrates the wall of the livestock barn during a power outage,
a ventilation door, the first side of which is hingedly rotatably attached to the ventilation opening so as to open to the outside of the livestock barn, and which opens and closes the ventilation opening;
an opening/closing arm extending into the livestock barn from a portion of the ventilation door near the first side;
a first pulley rotatably attached to the inside of the barn on the wall;
a second pulley attached to the first pulley;
One end is attached to the first pulley, the middle is wound around the first pulley, and the other end is attached to the open/close arm of the ventilation door from a direction intersecting the opening surface of the ventilation port. a first wire attached to a portion opposite to the first side and pulling the ventilation door toward the inside of the barn;
a second wire, one end of which is attached to the second pulley, and the other end of which is attached to the tip of the opening/closing arm from the direction of the second side opposite to the first side of the ventilation port. and
When the first pulley is rotated in the direction in which the first wire is let out from the first pulley, the second wire is wound around the second pulley, and the ventilation door opens the ventilation opening.
It is characterized by

By the way, in the technique of Patent Document 2, a gap is required between the key member and the latch in order for the key member to be smoothly removed from the latch during a power failure. A gap will be formed between the ventilation opening. In addition, in the technique of Patent Document 2, the ventilation door is urged in the direction of opening the ventilation door by inserting the key member so as to prevent the ventilation door from opening at the latch portion, while urging the ventilation door to open. If the door bends, there is a risk that the gap between the door and the ventilation port will increase. If there is a gap between the ventilation opening and the ventilation door, light and wind may enter the livestock barn even when the ventilation door is closed, and the environment in the livestock barn may be damaged.

According to this configuration, during normal times when commercial power is supplied, the ventilation door that closes the ventilation opening of the livestock barn is pulled inside the livestock barn by the first wire, so the ventilation door is pushed against the ventilation opening. Therefore, it is possible to eliminate the gap between the ventilation opening and the ventilation opening to make it difficult for light and wind to enter the livestock barn, so that the environment in the livestock barn is not impaired. In addition, since the ventilation door is not opened by keeping the first pulley from rotating during normal times, there is no need to continuously supply power to the electromagnet as in the conventional technology, which reduces the running cost of the livestock barn. can be suppressed.

When the supply of commercial power stops (during a power outage), rotating the first pulley in the direction in which the first wire is paid out loosens the pull of the first wire toward the inside of the barn against the ventilation door. , the ventilation door will be able to open. At this time, since the second pulley rotates together with the first pulley, the second wire is wound around the second pulley. Then, the tip of the open/close arm is pulled by the second wire toward the direction of the second side opposite to the first side on which the ventilation door is rotatably attached, and the hinge rotates in the direction in which the ventilation door opens. It will be done. As a result, the ventilation door can be opened and the ventilation port can be opened, so the inside of the barn can be naturally ventilated through the ventilation port, preventing the inside of the barn from becoming oxygen-deficient and the temperature inside the barn to rise. It is possible to prevent damage to livestock.

After that, when the supply of commercial power is resumed and the power failure is restored, the first pulley is rotated in the direction to wind the first wire in the opposite direction to the above, and the second pulley rotates in the direction to let out the second wire. As a result, the second wire pulls through the open/close arm in the direction in which the ventilation door opens, and the ventilation door can be closed. At this time, since the first wire is wound around the first pulley, it is pulled by the first wire in the direction in which the ventilation door closes, and the ventilation port can be closed. As a result, the normal state can be restored, and restoration work after a power failure can be facilitated. Further, the ventilation port can be easily opened and closed simply by rotating the first pulley in a desired direction, which facilitates periodic inspection.

Further, the ventilation structure according to the present invention, in addition to the above configuration,
"A motor that rotates the first pulley;
and a storage battery capable of supplying power to the motor in the event of a power failure.”
may be further provided.

According to this configuration, the power of the storage battery is used to rotate the motor during a power failure, so the ventilation door can be opened even during a power failure. In addition, since the first pulley is rotated by the motor to open the ventilation door, the open/close switch for rotating the motor can be provided at an easily accessible position, so that the first pulley does not interfere with the barn. It can be provided at a position (for example, a high position) where it does not become Furthermore, since it is sufficient to supply power from the storage battery to the motor until the ventilation door opens during a power failure, a storage battery with a smaller capacity than the storage battery that supplies power to the ventilation fan throughout the power failure is used. It is possible to suppress an increase in the cost of the ventilation structure.

As described above, according to the present invention, it is possible to reduce maintenance costs during normal times, open the ventilation openings of livestock barns during power outages, and easily close the ventilation openings after restoration of the power outage. It is possible to provide a good ventilation structure.

(a) is a perspective view of the main part during normal times when commercial power is supplied to the poultry house using the ventilation structure according to one embodiment of the present invention, and (b) is a perspective view of the commercial power from the normal time of (a). FIG. 11 is a perspective view of a main part when a power failure occurs due to supply stoppage; (a) is an explanatory diagram schematically showing the normal state of FIG. (c) is an enlarged explanatory view showing the parts of the first pulley and the second pulley in (b), and (d) is an enlarged view of the vicinity of the lower side of the ventilation door in (b) It is an explanatory diagram showing. (a) is an explanatory view schematically showing a normal state in an embodiment different from FIG. 2, and (b) is a schematic diagram showing a state in which the ventilation door is opened from the normal state of (a) to a power failure state. It is an explanatory diagram schematically shown.

A ventilation structure, which is a specific embodiment of the present invention, will be described below with reference to FIGS. 1 and 2. FIG. In this embodiment, a ventilation structure is used for the poultry house 1 as a livestock house. The ventilation structure of this embodiment is for natural ventilation by opening the ventilation opening 3 penetrating the wall 2 of the poultry house 1 in the event of a power outage when the supply of commercial power is stopped. Note that FIG. 1 omits a wall plate 2c, which will be described later, in the wall body 2. As shown in FIG. Hereinafter, the horizontal direction along the wall 2 will be referred to as the lateral direction.

The ventilation structure of this embodiment includes a ventilation door 4 whose lower side is hingedly attached to the ventilation port 3 so as to open to the outside of the poultry house 1, and a portion of the ventilation door 4 near the lower side that extends into the poultry house 1. It is equipped with an open/close arm 5 protruding, a first pulley 6 rotatably attached inside the poultry house 1 on the wall 2, and a second pulley 7 attached to the first pulley 6. - 特許庁

The ventilation structure also includes a first wire 8 having one end attached to the first pulley 6 and the other end attached to the ventilation door 4, and a second wire 8 having one end attached to the second pulley 7 and having the other end attached to the ventilation door 4. A second wire 9 attached to the tip of the opening/closing arm 5, a motor 10 for rotating the first pulley 6, and a storage battery (not shown) capable of supplying power to the motor 10 in the event of a power failure. more ready.

Furthermore, the ventilation structure includes a first tensioning wire 11 having one end attached midway through the first wire 8 and a first tensioning wire 11 attached to the other end of the first tensioning wire 11 to apply tension to the first wire 8. a second tension wire 13 having one end attached to the middle of the second wire 9; and a second weight 14 attached.

The wall body 2 of the poultry house 1 includes a plurality of vertical members 2a extending vertically and provided at intervals in the horizontal direction, and the vertical members 2a extending horizontally so as to connect each other. It is composed of a plurality of horizontal members 2b provided at intervals, and flat wall plates 2c attached to the horizontal members 2b. The wall plate 2c is attached to the outside of the poultry house 1. As shown in FIG.

The ventilation opening 3 is formed by a horizontally long square frame-shaped frame 20 . The frame 20 is attached to a grid portion of the wall 2 surrounded by two vertical members 2a and two horizontal members 2b. The frame body 20 includes a pair of side frames 20a extending vertically, an upper frame 20b connecting the upper ends of the pair of side frames 20a, and a lower frame 20c connecting the lower ends of the pair of side frames 20a. , consists of The frame body 20 protrudes into the frame and has a flange portion 20d provided along the entire circumference of the inner peripheral surface. A packing 21 made of an elastic material is attached to the surface of the flange portion 20d facing outside the poultry house 1 (see FIG. 2(d)).

The ventilation door 4 is formed in a flat plate shape. The ventilation door 4 is arranged on the outer side of the poultry house 1 with respect to the flange portion 20 d within the frame of the frame 20 . The lower side of the ventilation door 4 is attached to the lower frame 20c by a plurality of hinges 22 so that the upper side of the ventilation door 4 is hinged and opened to the outside of the poultry house 1. - 特許庁When the ventilation door 4 is placed in an upright state, the inner side surface 4a facing the inside of the poultry house 1 contacts the packing 21 attached to the flange portion 20d of the frame 20. As shown in FIG. Thus, the ventilation door 4 can open and close the ventilation opening 3 .

A first wire mounting portion 23 to which the other end of the first wire 8 is mounted, the opening/closing arm 5 to which the other end of the second wire 9 is mounted, and is installed. The first wire attachment portions 23 are attached near both ends in the horizontal direction on the inside side surface 4a of the ventilation door 4 and near the center in the vertical direction. The opening/closing arm 5 is attached near the lower side of the ventilation door 4 at the center in the horizontal direction on the inner side surface 4a of the house. In other words, the first wire attachment portion 23 is attached to the open/close arm 5 on the side opposite to the lower side of the ventilation door 4 to which the hinge 22 is attached. A second wire attachment portion 24 made of an eyebolt having an annular head is attached to the tip of the opening/closing arm 5, and the other end of the second wire 9 is attached to the second wire attachment portion 24. .

In this embodiment, as shown in FIG. 2, the distance from the hinge center of the hinge 22 to the tip of the opening/closing arm 5 (the second wire attachment portion 24) is the distance from the hinge center of the hinge 22 to the first wire attachment portion 23. It is configured to be shorter than the distance.

The motor 10 is attached to a portion of the wall 2 laterally outward and vertically upward of the ventilation opening 3 . The motor 10 is mounted with its rotating shaft 10a oriented laterally. A first pulley 6 is attached to the rotating shaft 10a. As the motor 10 of this embodiment, a gear motor or a motor with a brake, which is difficult to rotate from the first pulley 6 side, is used.

Commercial power and a storage battery (not shown) charged by the commercial power are connected to the motor 10, and the first pulley 6 and the second pulley 7 are rotated forward by operating an open/close switch (not shown). (the direction in which the first wire 8 wound around the first pulley 6 is let out) or reverse.

Since the first pulley 6 is attached to the rotating shaft 10a of the motor 10, its axis is oriented in the lateral direction. A second pulley 7 is attached to the surface of the first pulley 6 opposite to the motor 10 . The second pulley 7 is attached to the first pulley 6 with its center eccentric with respect to the rotating shaft 10a.

In this embodiment, the diameter of the second pulley 7 is smaller than the diameter of the first pulley 6. In addition, as shown in FIG. 2A, the second pulley 7 has the first wire 8 drawn out from the first pulley 6 toward the center of the first pulley 6 in a normal state in which commercial power is supplied. It is installed eccentrically on the side of the part where the In addition, one end of the second wire 9 attached to the second pulley 7 is normally placed with respect to the center of the second pulley 7 at a portion where the first wire 8 is let out from the first pulley 6. installed on the opposite side.

The first wire 8 has one end attached to the first pulley 6 and is wound around the first pulley 6 in the middle. 4 (first wire attachment portion 23). The first wire 8 is wound around the first pulley 6 by one turn, as shown in FIG. 2(a). Although detailed illustration is omitted, the first wire 8 branches into two from the middle toward the other end, and the other ends are attached to the two first wire attachment portions 23 attached to the ventilation door 4, respectively. installed.

The first wire 8 extends downward from the first pulley 6, and is wound around a first guide pulley 25 provided at the same height as the upper frame 20b of the frame body 20, thereby opening the ventilation opening 3. extends laterally upward. The first guide pulley 25 is attached to an attachment member 26 protruding into the poultry house 1 from the vertical member 2a.

By the way, as shown in FIG. 1, three

horizontal guide members

27a, 27b, and 27c are attached to the frame 20 so as to be separated from each other in the horizontal direction on the upper frame 20b. The lateral guide members 27a are attached to lateral ends near the first guide pulleys 25 on both lateral ends of the upper frame 20b. The lateral guide members 27b are attached to the lateral ends remote from the first guide pulley 25 on both lateral ends of the upper frame 20b. The lateral guide member 27c is attached to the lateral center of the upper frame 20b. These

lateral guide members

27a, 27b, and 27c are eyebolts, and are attached with the axial center of the annular portion directed laterally. Further, the

lateral guide members

27a, 27b, 27c are attached to attachment members 28 protruding into the poultry house 1 from the upper frame 20b at respective portions.

In addition, a pole member 29 is attached to the frame body 20 and extends laterally so as to connect the pair of side frames 20a at the center in the vertical direction inside the poultry house 1 . Vertical guide members 30 made of eyebolts are attached to portions of the rod member 29 immediately below the three

lateral guide members

27a, 27b, and 27c, respectively.

The first wire 8 guided in the lateral direction by the first guide pulley 25 branches into two, each of which passes through the lateral guide member 27a, and one of which is bent downward from the lateral guide member 27a. . Another first wire 8 passes through the lateral guide member 27c and the lateral guide member 27b, and is bent downward from the lateral guide member 27b. Each of the first wires 8 bent downward from the horizontal guide member 27a and the horizontal guide member 27b passes through the vertical guide member 30 immediately below each, and then bends toward the outside of the poultry house 1 to open the ventilation door 4. It is attached to the first wire attachment portion 23 . Thereby, the first wire 8 is attached to the ventilation door 4 from a direction intersecting the opening surface of the ventilation port 3 . A slit through which the first wire 8 and the second wire 9 pass is formed in the rod member 29 .

The second wire 9 has one end attached to the second pulley 7 and the other end attached to the tip of the open/close arm 5 (second wire attachment portion 24 ) from the direction of the upper side of the ventilation port 3 . More specifically, the second wire 9 extends downward from the second pulley 7, is wound around the guide pulley 31, and is provided between the first guide pulley 25 and the wall 2. By being wound around the second guide pulley 32, it extends laterally upward from the ventilation port 3 (see FIG. 1). The guide pulley 31 is attached to an attachment member 33 protruding into the poultry house 1 from the vertical member 2a. A second guide pulley 32 is attached to the mounting member 26 .

The second wire 9 passes through the horizontal guide member 27a and the horizontal guide member 27c, bends downward from the horizontal guide member 27c, passes through the vertical guide member 30 in the center in the horizontal direction, and passes through the tip of the opening/closing arm 5 ( It is attached to the second wire attachment portion 24). Thereby, the second wire 9 is attached to the tip of the opening/closing arm 5 from the direction of the upper side opposite to the lower side of the ventilation opening 3 .

One end of the first tension wire 11 is attached to the first wire 8 via a rod such as an oil-tempered wire, and extends laterally outward from the ventilation opening 3 along the upper frame 20b of the frame 20. extended to The first tension wire 11 extends downward by being wound around a first tension pulley 34 provided laterally outside the frame 20 at the same height as the upper frame 20b. A first weight 12 attached to the other end is suspended. The first tension pulley 34 is attached to an attachment member 35 protruding into the poultry house 1 from the vertical member 2a. Although detailed illustration is omitted, one end of the rod is attached to the first wire 8 at a portion between the lateral guide member 27a and the first guide pulley 25, and extends laterally from there. It extends through three

lateral guide members

27a, 27b, and 27c, and the other end is attached to the first tension wire 11 at a portion between the lateral guide member 27b and the first tension pulley 34. As shown in FIG.

As with the first tension wire 11 , the second tension wire 13 has one end attached to the second wire 9 via a rod bar, and extends along the upper frame 20 b of the frame 20 and extends from the ventilation opening 3 . It extends laterally outward. The second tension wire 13 extends downward by being wound around a second tension pulley 36 provided between the first tension pulley 34 and the wall 2. The attached second weight 14 is suspended. The second tension pulley 36 is attached to the attachment member 35 .

By the way, the length of the first wire 8 that is paid out or taken up by the rotation of the first pulley 6 and the length of the second wire 9 that is taken up or paid out by the rotation of the second pulley 7 are It can be set by the respective diameters of the first pulley 6 and the second pulley 7 . On the other hand, the extension length (progress and retraction length) of the first wire 8 required to open and close the ventilation door 4 is determined by the opening and closing angle of the ventilation door 4, the vertical guide member 30 and the ventilation door 4 when viewed from the lateral direction. can be set by the positional relationship between the center of the hinge and the first wire attachment portion 23 . In addition, the forward/backward length required for opening and closing the ventilation door 4 in the second wire 9 is determined by the opening and closing angle of the ventilation door 4, the hinge center of the vertical guide member 30 and the ventilation door 4, and the second wire when viewed from the lateral direction. It can be set by each positional relationship with the mounting portion 24 . In this embodiment, the diameters of the first pulley 6 and the second pulley 7, the positions of the first wire attachment portion 23 and the second wire attachment portion 24, and the like are set based on the above relationship. ing.

Next, a ventilation method for the poultry house 1 at the time of a power failure using the ventilation structure of this embodiment will be described. 1(a) and 2(a), the ventilation opening 3 penetrating the wall 2 of the poultry house 1 is replaced by the ventilation door 4 during normal operation when commercial power is supplied. is closed. In this state, the motor 10 is stopped pulling the ventilation door 4 into the poultry house 1 via the first wire 8 wound around the first pulley 6 . That is, the ventilation door 4 is pressed against the packing 21 attached to the flange portion 20 d of the frame 20 forming the ventilation port 3 . As a result, there is no gap between the ventilation opening 3 and the ventilation door 4, and light and wind do not enter the poultry house 1 through the ventilation opening 3. - 特許庁

In this normal state, for example, as shown in FIG. there is On the other hand, the second wire 9 is attached to the lower end of the second pulley 7 and is let out, and the second wire 9 is not wound thereon. Therefore, when the first pulley 6 is rotated clockwise (forward rotation) by the motor 10 , the first wire 8 is let out from the first pulley 6 and the second wire 9 is wound around the second pulley 7 . .

Also, in normal times, as described above, the first wire 8 pulls the ventilation door 4 into the poultry house 1, so the first wire 8 has no slack. On the other hand, in the second wire 9, tension is applied by the second weight 14 to the portion closer to the second pulley 7 than the portion to which the second tension wire 13 is attached. There is slack in the part of

When the supply of commercial power is stopped (in the event of a power outage), opening an open/close switch (not shown) causes the motor 10 to feed the first wire 8 from the first pulley 6 using a storage battery (not shown) as power. rotates forward. When the first pulley 6 and the second pulley 7 are rotated by the forward rotation of the motor 10, the first wire 8 is let out from the first pulley 6, and the force of pulling the ventilation door 4 into the poultry house 1 by the first wire 8 is generated. Loosen. At the same time, the second wire 9 is wound around the second pulley 7 and the opening/closing arm 5 is pulled by the second wire 9 toward the vertical guide member 30 .

Since the ventilation door 4 is closed in an upright position, even if the first wire 8 is loosened, the ventilation door 4 will not immediately rotate in the direction of hinge opening. Then, when the tip of the opening/closing arm 5 is pulled by the second wire 9, the hinge rotates in the opening direction. At this time, by making the diameter of the second pulley 7 smaller than the diameter of the first pulley 6, the speed at which the second wire 9 is pulled by the second pulley 7 even if it is driven by the same motor 10 is reduced to the first It becomes slower than the speed at which the first wire 8 is paid out and loosened by the pulley 6. - 特許庁In addition, since the second wire 9 has slack in the portion on the opening/closing arm 5 side as described above, the opening/closing arm 5 is not immediately pulled even when the second pulley 7 starts winding, and the first wire 9 does not pull the opening/closing arm 5 immediately. The timing of pulling the opening/closing arm 5 is delayed with respect to the start of extension of the arm 8. - 特許庁For this reason, the first wire 8 does not interfere with the force of opening the ventilation door 4 by the second wire 9, and the ventilation door 4 is not broken.

Then, when the ventilation door 4 is hinge-rotated from the vertical state to an angle of 60 degrees, the motor 10 stops rotating. As a result, the ventilation opening 3 is opened, and the inside of the poultry house 1 can be naturally ventilated through the ventilation opening 3. - 特許庁

After that, when the supply of commercial power is resumed, when the open/close switch is closed as recovery work, the motor 10 is reversed by the commercial power, and the hinge rotates in the direction to close the ventilation door 4 by performing the opposite operation to the above. do. Then, when the ventilation door 4 closes the ventilation port 3, the rotation of the motor 10 is stopped and the normal state is restored. At this time, the motor 10 stops while the ventilation door 4 is being pulled into the poultry house 1 by the first wire 8 .

In the present embodiment, since tension is applied to the first wire 8 and the second wire 9 by the first weight 12 and the second weight 14, the forward and reverse rotation of the motor 10 causes the first wire 8 and the second wire 9 to be tensioned. When the two wires 9 are let out, the first wire 8 and the second wire 9 are not loosened, and the first wire 8 and the second wire 9 are not separated from the first guide pulley 25 and the second guide pulley 32. .

It should be noted that the ventilation door 4 may automatically open the ventilation door 4 by automatically switching the power to the storage battery and rotating the motor 10 forward when the supply of commercial power is stopped and a power outage occurs. Further, when the supply of commercial power is resumed after a power outage, the power may be automatically switched to commercial power, the motor 10 may be reversed, and the ventilation door 4 may be automatically closed.

As described above, according to the ventilation structure of the present embodiment, the ventilation door 4 that closes the ventilation opening 3 of the poultry house 1 is moved to the inside of the poultry house 1 by the first wire 8 in normal times when commercial power is supplied. Because the ventilation door 4 is pulled, the ventilation door 4 is pressed against the ventilation port 3, so that the gap between the ventilation port 3 and the ventilation port 3 can be eliminated, making it difficult for light and air to enter the poultry house 1 from the ventilation port 3. Therefore, the environment inside the poultry house 1 is not damaged.

Also, in normal times, the first pulley 6 is prevented from rotating by the motor 10, and the ventilation door 4 is not opened. An increase in running costs can be suppressed.

Further, when the supply of commercial power is stopped, when the motor 10 is rotated (forward) in the direction in which the first wire 8 is let out from the first pulley 6, the poultry house with the first wire 8 with respect to the ventilation door 4 1 The inward pull is relaxed and the ventilation door 4 can be opened. At this time, since the second pulley 7 rotates together with the first pulley 6 , the second wire 9 is wound around the second pulley 7 . Then, the tip of the opening/closing arm 5 is pulled by the second wire 9 in the direction of the upper side opposite to the lower side of the ventilation port 3, and the ventilation door 4 is hinge-rotated in the opening direction. As a result, the ventilation door 4 can be opened and the ventilation port 3 can be opened, so that the inside of the poultry house 1 can be naturally ventilated through the ventilation port 3, and the inside of the poultry house 1 becomes oxygen-deficient, and the temperature inside the poultry house 1 increases. It is possible to prevent damage to birds due to rising.

In addition, even if the ventilation door 4 becomes difficult to open due to aging or the like, the force of the motor 10 pulls the open/close arm 5 via the second wire 9 to rotate the ventilation door 4 as a hinge. 4 can be safely opened.

Furthermore, when the supply of commercial power is resumed and the power outage is restored, when the motor 10 is reversed, the second pulley 7 rotates in the direction in which the second wire 9 is paid out, and the opening and closing arm 5 by the second wire 9 The pull in the opening direction of the ventilation door 4 is loosened, and the ventilation door 4 can be closed. At this time, since the first wire 8 is wound around the first pulley 6, the ventilation door 4 is pulled by the first wire 8 in the closing direction, and the ventilation port 3 can be closed. As a result, the normal state can be restored, and restoration work after a power failure can be facilitated.

In addition, since the ventilation port 3 is horizontally long, ventilation efficiency is better than when it is vertically long. Further, since the ventilation port 3 can be easily opened and closed only by rotating the motor 10 in a desired direction, periodic inspection is easy.

Furthermore, since it is equipped with a storage battery that supplies power in the event of a power failure, the ventilation door 4 can be opened by the motor 10 to open the ventilation port 3 even in the event of a power failure. In addition, since the first pulley 6 is rotated by the motor 10 to open the ventilation door 4, the open/close switch for rotating the motor 10 can be provided at an easily accessible position. can be provided in a position (e.g., high position) that does not interfere with poultry farming. Furthermore, since it is sufficient to supply power from the storage battery to the motor 10 until the ventilation door 4 is opened during a power failure, a storage battery with a small capacity is used compared to a storage battery that supplies power to the ventilation fan throughout the power failure. Therefore, it is possible to suppress an increase in the cost of the ventilation structure.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the above embodiments, and various improvements and design changes are possible without departing from the scope of the present invention. is.

For example, in the above-described embodiment, the ventilation door 4 is hinge-rotatably mounted on the lower side, but the ventilation door 4 is not limited to this. It is good also as the ventilation door 4 which is provided. The ventilation door 4 shown in FIG. 3 has its upper side attached to the upper frame 20b of the frame body 20 with a plurality of hinges 22 so that its lower side is hinged and opened to the outside of the poultry house 1 . The embodiment of FIG. 3 is upside down with respect to the embodiment of FIG. 2, and the same components as those described above are denoted by the same reference numerals, and the description thereof is omitted. Also in the ventilation structure of this embodiment, the same effect as the above can be produced.

Further, in the above embodiment, one motor 10 is used to open and close one ventilation door 4 (ventilation port 3), but the present invention is not limited to this, and a plurality of ventilation ports 3 (ventilation doors 4) can be used. are arranged in a row in the horizontal direction, and the respective ventilation doors 4 are connected by the first wire 8 and the second wire 9, and the plurality of ventilation doors 4 may be opened and closed by one motor 10.

In the above embodiment, the first pulley 6 and the second pulley 7 are rotated by the motor 10 to open and close the ventilation door 4. However, the invention is not limited to this. The second pulley 7 may be manually rotated to open and close the ventilation door 4. - 特許庁

Furthermore, in the above-described embodiment, the center of the second pulley 7 is eccentric with respect to the center of the first pulley 6, but this is not a limitation. It may be coaxial with the center of one pulley 6 . In the above embodiment, when the first pulley 6 is rotated in the direction in which the first wire 8 is paid out, the first wire 8 is paid out and the second wire 9 is wound around the second pulley 7 at the same time. However, it is not limited to this, and the second wire 9 may be let out from the second pulley 7 for a short time and then wound up.

Further, in the above embodiment, the diameter of the second pulley 7 is smaller than the diameter of the first pulley 6, but the diameter of the first pulley 6 and the diameter of the second pulley 7 are not limited to this. diameter may be the same.

In addition, in the above embodiment, the poultry house 1 is shown as a livestock house using the ventilation structure of the present invention, but it is not limited to this, and may be used in cowsheds, pigsties, stables, and the like.

Claims

A ventilation structure for natural ventilation by opening a ventilation opening penetrating the wall of the livestock barn during a power outage,
a ventilation door, the first side of which is hingedly rotatably attached to the ventilation opening so as to open to the outside of the livestock barn, and which opens and closes the ventilation opening;
an opening/closing arm extending into the livestock barn from a portion of the ventilation door near the first side;
a first pulley rotatably attached to the inside of the barn on the wall;
a second pulley attached to the first pulley;
One end is attached to the first pulley, the middle is wound around the first pulley, and the other end is attached to the open/close arm of the ventilation door from a direction intersecting the opening surface of the ventilation port. a first wire attached to a portion opposite to the first side and pulling the ventilation door toward the inside of the barn;
a second wire, one end of which is attached to the second pulley, and the other end of which is attached to the tip of the opening/closing arm from the direction of the second side opposite to the first side of the ventilation port. and
When the first pulley is rotated in the direction in which the first wire is paid out from the first pulley, the second wire is wound around the second pulley, and the ventilation door opens the ventilation port. Characterized ventilation structure.
a motor that rotates the first pulley;
2. The ventilation structure according to claim 1, further comprising a storage battery capable of supplying electric power to said motor in the event of a power failure.