JPH11225587A - Device for spreading sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet-spreading device capable of simply spreading a flexible sheet or releasing the spreading of the sheet without requiring a dangerous work content. SOLUTION: This sheet-spreading device for spreading a flexible sheet 5 comprising vinyl chloride resin or polyethylene resin on the surface of a building 1 such as a green house is provided with a guide member 2 fixed to the prescribed places 3 of the building 1, a moving member 4 integrated with one end of the flexible sheet 5 whose other end is fixed to the prescribed plate 1C1 of the building 1 and capable of being guided and moved along the guide member 2, and a spreading means 8 capable of operating the moving member 4 from the outside of the building 1. The moving member 4 is driven by the operation of the spreading means 8 to reciprocatively move the flexible sheet on the surface of the building 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible sheet stretching apparatus used as a covering material for a greenhouse.

[0002]

2. Description of the Related Art As is well known, greenhouses set up for agricultural or horticultural use have a structure in which the exterior portion is covered with a covering material using a flexible sheet. When setting up a greenhouse, for example, a joint part corresponding to the roof part is provided at the upper part of the strut located at both ends in the frontage direction on the ground foundation, and the entire joint part can be made of vinyl chloride or polyethylene resin. A covering material using a flexible sheet is attached. The covering material is stretched along a roof surface in a depth direction along a roof surface and in a direction between beams which is a direction perpendicular to this direction in a pre-assembled joint portion. Such an installation work was considered to require human labor.

[0003]

However, since the work of stretching the flexible sheet is an operation at a high place, there is a danger in the operation. Moreover, depending on the size of the greenhouse, it takes not only a plurality of personnel but also a considerable amount of time for the stretching work to stretch the flexible sheet over the entire joint area.
Further, the flexible sheet once stretched is usually fixed at the joint part of the greenhouse, and cannot be opened at the time of ventilation or taking in sunlight. In addition, some of the flexible sheets that have been installed are still installed during the season using the greenhouse.
When weather resistance deteriorates, it is necessary to replace it. However, at the time of replacement, as in the case of the upholstery work, the work at a high place and the working time are lengthened, and the replacement work cannot be performed easily.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conventional flexible sheet, in particular, in view of the problem of the stretching work, and to easily stretch and stretch the flexible sheet without requiring dangerous work contents. It is an object of the present invention to provide a seat stretching apparatus having a configuration capable of releasing.

[0005]

In order to achieve this object, the present invention is directed to an apparatus for mounting a flexible sheet made of vinyl chloride or polyethylene resin on the surface of a building such as a greenhouse. The guide member fixed to a predetermined location of the building and the other end of a flexible sheet having one end fixed to the predetermined location of the building are integrated, and are movable by being guided by the guide member. A movable member, and a stretching means for moving the movable member from the outside of the building, wherein the flexible sheet is reciprocated on the surface of the building by driving the movable member by operating the stretching means. It is characterized by having

According to a second aspect of the present invention, in the seat stretching apparatus according to the first aspect, the guide member is located above the roof of the building and formed in an arch shape along the roof. The arched ends are integrally supported by the side pillars.

According to a third aspect of the present invention, in the seat stretching apparatus according to the first aspect, the stretching means includes a chain wheel operated outside the building and a loop-shaped chain wheel worn on the chain wheel. And a chain-shaped transmission member, wherein the chain is connected to the movable member, and moves the movable member in any one of the reciprocating directions according to a rotation direction of the chain wheel.

According to a fourth aspect of the present invention, in the seat stretching apparatus according to the first aspect, the movable member has a movable portion main body having a plurality of rolling wheels disposed at a position to sandwich the guide member. In addition, one end of the flexible sheet is attached to the movable portion main body.

According to a fifth aspect of the present invention, in the seat stretching apparatus of the first aspect, the guide members are arranged at least at both ends in the depth direction of the building, and the movable members are provided on the guide members, respectively. A support member having one end integrated with the flexible sheet is provided between the movable members.

According to a sixth aspect of the present invention, in the sheet stretching apparatus according to the third aspect, the string-shaped transmission member is provided at a plurality of locations along an arch shape of the chain wheel and the guide member of the stretching means. The present invention is characterized in that it is wrapped around a provided sprocket and a part thereof is collectively connected to the movable member.

[0011]

According to the first aspect of the present invention, the flexible sheet having one end fixed to the movable member is moved by moving the movable member along the guide member by the stretching means operable from outside the building. Since it is possible to reciprocate on the surface, it is not necessary to climb the building to spread the flexible sheet. For this reason, it is possible to eliminate the work of the worker from high places, and to stretch and release the flexible sheet at a necessary time to open the roof of the building.

According to the second aspect of the present invention, by providing an arch-shaped guide portion along the roof in advance above the roof of the building, the movable member moving along the guide member can be moved at any time. , So that the flexible sheet can be loaded and unloaded.

According to the third aspect of the present invention, the moving direction of the string-shaped transmission member can be set according to the operation direction of the chain wheel that constitutes the stretching means. By setting the moving direction of the movable member outside the building, the work of stretching and releasing the flexible sheet can be easily performed.

According to the fourth aspect of the present invention, by using a movable member having a plurality of rolling wheels for sandwiching the guide member, the resistance when moving along the guide member is reduced and the flexible sheet can be easily formed. Upholstering work can be performed.

According to the fifth aspect of the present invention, by providing the guide members at least at both ends in the depth direction of the building, the work of installing the flexible sheet in the area where the flexible sheet is installed can be reduced.

According to the sixth aspect of the present invention, the string-shaped transmission member is wrapped around sprockets provided at a plurality of positions along the shape of the chain wheel and the guide member of the stretching means, and a part thereof. Is connected to the movable member, and the movable member can be used as a part of the support portion of the string-shaped transmission member. It can be moved efficiently.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a view showing the front of a greenhouse structure which is an example of a building to which a seat covering apparatus according to an embodiment of the present invention is applied. In FIG. 1, a greenhouse 1 is a cloth foundation (shown in the figure) formed on the ground. Side) 1C located on both ends of the frontage surface corresponding to the front of the greenhouse, and a joint part 1C serving as a roof provided on the upper side of the torso 1B suspended between the top surfaces of the side pillars. And the stud-side stud 1D supporting the joint part 1C at the frontage
And a wedge-shaped paddle 1E. Along the depth direction which is a direction perpendicular to the frontage surface, although not shown, a greenhouse structure including a main house or the like located in the joint palm is provided.

A guide member 2 composed of a pipe member having an arch shape is provided on the upper portion of the joint portion 1C corresponding to a predetermined portion of the greenhouse 1 along the joint portion 1C. The guide members 2 are arranged at both ends in the depth direction of the greenhouse 1,
Both ends of the arch are formed as hanging pieces 2A that are bent in the vertical direction, and the hanging pieces 2A are attached to support members 3 fixed to the side columns 1A. The bending position 2A1 of the hanging piece 2A in the guide member 2 is set at a position slightly lower than the eaves position 1C1 of the palm joint 1C. This is because the movable member 4 to be described later is located at the eaves position 1C of the joint portion 1C.
This is for covering a flexible sheet 5 described later over the entire arch surface of the palm portion 1C, which is located below the first side.

As the flexible sheet 5, a flexible resin sheet such as vinyl chloride or polyethylene resin is used.
The greenhouse 1 has a size capable of covering the entire area in the frontage direction and the depth direction, and one end in the frontage direction is fixed to the eaves position 1C1 of the palm joint 1C, and the other end is fixed to the movable member 4.

As shown in FIGS. 2 and 3, the movable member 4 is provided with a plurality of rolling wheels 4A for vertically holding the guide member 2, and these rolling wheels 4A are provided by a common bracket forming a movable portion main body. It is rotatably supported by 4B. In this embodiment, a pair of rolling wheels 4A located on the upper surface of the guide member 2 are provided to suspend and support a sheet holding rod 6 described later, and the rolling wheels 4A located on the lower surface of the guide member 2 are provided.
Are provided between the rolling wheels 4A located on the upper surface. At the lower end of the bracket 4B, a sheet holding rod 6 having an axial direction extending in the depth direction of the greenhouse is provided.
The other end of the flexible sheet 5 is fixed to the sheet holding rod 6, as shown in FIG. In FIG. 2, a chain mounting bracket 7 composed of an end plate and used for mounting a chain corresponding to a string-shaped transmission member is fixed to a lower peripheral surface of the sheet holding rod 6. Is a mounting means 8 described later.
A part of the cord-shaped transmission member 9 provided in the first embodiment is integrated and integrated.

The stretching means 8 is a driving means for moving the movable member 4 on the guide member 2, and as shown in FIGS. 1 and 4, one end of the flexible sheet 5 is fixed. It is provided on the support member 3 located on the opposite side from the support member 3 located near the side eaves tip position 1C1. That is,
The tensioning means 8 includes a chain sprocket 8A rotatably provided by the support member 3, and a chain 8 for external operation mounted on the chain sprocket 8A.
B and a drive sprocket 8 provided coaxially with the chain sprocket 8A and around which the chain 9 is wound.
A1 (see FIG. 4). The chain 9
Not only the support member 3 where the chain sprocket 8A is located but also one end of the flexible sheet 5 is fixed to the eaves position 1C.
It is also wound around a driven sprocket 10 (see FIGS. 1 and 4) provided on a support member 3 located in the vicinity of 1. FIG. 5 is a schematic diagram for explaining the outline of the upholstery means 8. In the figure, the upholstery means 8 is worn on the chain sprocket 8A and hangs down to a position where the worker can reach. The chain 9 which is wound around the chain sprocket 8A is wound around the driven sprocket 10 at a position facing the driving sprocket 8A1 on the side of the chain sprocket 8A, and the chain 9 on the movable member 4 side. It is connected to the mounting bracket 7. For this reason, the chain 9 forms a loop by the driving sprocket 8A1, the driven sprocket 10, and the chain mounting bracket 7, and the position of the chain mounting bracket 7 is displaced in the loop according to the moving direction of the chain sprocket 8A. Thereby, the movable member 4 can reciprocate along the guide member 2 according to the moving direction of the chain 9. In the present embodiment, as shown in FIG. 1, the space between the chain 9 and the guide member 2 is also fixed so as to serve as a tensioner for the chain 9 so that the extended state of the chain 9 follows the shape of the guide member 2. Subsprockets 11 are provided at a plurality of locations along the arch shape of the guide member 2. In the case of the present embodiment, the sub sprocket 11 is provided with the configuration shown in FIG. That is, the base of the support plate 13 is attached to the support rod 12 that is integrated and extended with the guide member 2, and a sprocket support member 14 that supports the sub-sprocket 11 is attached to the tip of the support plate 13. Is provided.

The present embodiment is configured as described above, and the procedure when the flexible sheet 5 is stretched will be described. The movable member 4 mounted on the guide member 2 has the terminal portion of the chain 9 attached thereto. The flexible sheet 5 is connected to the chain mounting bracket 7 and the other end of the flexible sheet 5 is fixed to the sheet holding rod 6. One end of the flexible sheet 5 is located at the eaves position 1C of the joint portion 1C.
Fixed to 1. When the other end of the flexible sheet 5 is fixed to the movable member 4, the chain sprocket 8A is rotated by a chain 8B for external operation, and the movable member 4 is rotated via a chain 9 linked to the chain sprocket 8A.
Is located near the eaves location 1C1. Flexible sheet 5
Is fixed to the eaves position 1C1 and the sheet holding rod 6 of the movable member 4, respectively, the operator may perform work near the eaves position 1C1 using a ladder or the like.

When the other end of the flexible sheet 5 is fixed to the sheet holding rod 6 of the movable member 4, an operator O (see FIG. 1) operates the external operation chain 8B of the stretching means 8, and the chain By rotating the sprocket 8A, the movable member 4 pulls the chain 9 in a direction away from the eaves position 1C1,
The movable member 4 is moved forward. In accordance with the movement of the chain 9, the movable member 4 is moved from the right to the left eaves position 1C in FIG.
With the forward movement toward 1, the flexible sheet 5 is pulled out and expanded. FIG. 1 shows a process in which the movable member 4 moves.

FIG. 6 shows a state in which the movable member 4 has reached the bending position 2A1 of the guide member 2, and this state is a state in which the flexible sheet 5 has completely covered the palm joint 1C. In other words, when the movable member 4 reaches the bending position 2A1 of the guide member 2, the movable member 4 cannot move further because the curvature is different from the range in which the hanging piece 2A has moved from the bending position 2A1. Therefore, the movable member 4 is stopped at the bending position 2A1. In this embodiment, the shock absorbing and locking member 15 is provided at the bending position 2A1, and the movable member 4 is forcibly moved to that position.
Is stopped, so that the worker can recognize that the movement of the movable member 4 has stopped. Since the bending position 2A1 is located below the eaves position 1C1 of the joint portion 1C, the flexible sheet 5 is attached to the joint portion 1C.
This means that the entire area of C was covered.

On the other hand, as in the case of ventilation in a greenhouse or replacement of a flexible sheet, the flexible sheet 5 which covers the entire area of the palm part 1C is placed on the palm part 1 to which one end is fixed.
In the case of moving toward the eaves tip position 1C1 of C to open the joint portion 1C, the movable member 4 is moved back along the guide member 2 by the procedure reverse to that at the time of covering. When the movable member 4 moves backward, the flexible sheet 5 is pushed and moved by the movable member 4 in the process, and is moved near the eaves position 1C1 at which one end is fixed. When the movable member 4 reaches the bending position 2A1 of the guide member 2, the movable member 4 stops due to a change in the curvature of the bending position 2A1, and the moved flexible sheet 5 is hung from the eaves position 1C1. In addition, such a return movement of the flexible sheet 5 is not limited to the case where it is performed from one end to the other end of the guide member 2, and may be performed in the middle of the arch portion of the guide member 2.

According to this embodiment, a member for external operation can be arranged at a position accessible to the operator only by changing the length of the external operation chain 8B of the stretching means 8. Therefore, the flexible sheet can be stretched by an external operation regardless of the difference in height. In addition,
In the present embodiment, a chain is used as the string-shaped transmission member used for the stretching means 8. However, the present invention is not limited to this configuration, and any member having a similar function may be used. It is also possible to use. In addition, as a means for moving the string-shaped transmission member 9, a motor may be used as a drive source instead of a chain for external operation. In this case, it is desirable to control the driving amount of the driving source by detecting the temperature, humidity or moisture in the greenhouse and controlling the driving amount according to the detection result. The guide members 2 are not limited to the two ends in the depth direction of the greenhouse 1, and may be provided at a plurality of locations in the depth direction. Further, a reduction mechanism may be provided for the tensioning means 8 to change the rotation ratio between the chain sprocket 8A and the driving sprocket 8A1, thereby reducing the labor required for external operation. In the above-described embodiment, the flexible sheet 5 has a size capable of covering the entire area of the joint portion 1C. However, the present invention is not limited to this. The above-described stretching device may be applied to the apparatus.

[0027]

As is apparent from the above embodiment, according to the first aspect of the present invention, the movable member is moved along the guide member by the stretching means which can be operated from outside the building. Because the flexible sheet whose one end is fixed to the movable member can be reciprocated on the building surface,
There is no need to climb the building to perform the work of installing the flexible sheet. For this reason, it is possible to eliminate the work of the worker from high places, and to stretch and release the flexible sheet at a necessary time to open the roof of the building. In addition, since the flexible sheet can be stretched and unstretched only by reciprocating the movable member along the guide member, it is not necessary to pay attention as in the case of working at a high place. And work time can be greatly reduced.

According to the second aspect of the present invention, by providing an arch-shaped guide portion along the roof at a position above the roof of the building in advance, the movable member moving along the guide member can be arbitrarily set. And the work of stretching and releasing the flexible sheet can be performed.

According to the third aspect of the present invention, the moving direction of the string-shaped transmission member can be set according to the operation direction of the chain wheel constituting the stretching means. By setting the moving direction of the connected movable member outside the building, the work of stretching and releasing the flexible sheet can be easily performed.

According to the fourth aspect of the present invention, by using a movable member having a plurality of rolling wheels for sandwiching the guide member, the resistance at the time of moving along the guide member is reduced, and the flexible member is easily formed. Seat mounting work can be performed.

According to the fifth aspect of the present invention, by providing the guide members at least at both ends in the depth direction of the building, it is possible to reduce the work of setting the flexible sheet in the setting range.

According to the sixth aspect of the present invention, the string-shaped transmission member is wound around sprockets provided at a plurality of locations along the shape of the chain wheel and the guide member of the stretching means, and Since the movable member can be used as a part of the support portion of the string-shaped transmission member by partially connecting the movable member to the movable member, the movement of the string-shaped transmission member is directly transmitted to the movable member to be movable. The member can be moved efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic diagram for explaining a configuration of a greenhouse to which a sheet stretching apparatus according to an embodiment of the present invention is applied.

FIG. 2 is a view for explaining a configuration of a movable member used in the sheet stretching apparatus according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along a direction indicated by reference numeral III in FIG.

FIG. 4 is a partial plan view for explaining the configuration of the stretching means used in the sheet stretching apparatus according to the embodiment of the present invention.

FIG. 5 is a schematic diagram for explaining the configuration of the movable member and the stretching means shown in FIG. 2;

FIG. 6 is a schematic diagram for explaining one aspect of the sheet stretching apparatus according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Greenhouse which is one of the buildings 1C The joint part 1C1 The eaves position corresponding to a predetermined position 2 Guide member 2A Hanging piece 3 Support member 4 Movable member 4A Wheel 4B Bracket 5 Flexible sheet 6 Chain mounting bracket 7 Sheet holding rod 8 Tensioning means 8A Chain sprocket 8A1 Drive sprocket around which string-shaped transmission member is looped 8B Chain for external operation 9 Chain forming string-shaped transmission member 10 Driven sprocket around which string-shaped transmission member is looped 11 Sub-sprocket O worker

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoo Asaishi 1105 Nikko, Kuno, Tendo, Yamagata Prefecture Inside Tohoku Pioneer Corporation

Claims (6)

[Claims] 1. A device for mounting a flexible sheet made of vinyl chloride or polyethylene resin on a surface of a building such as a greenhouse, comprising: a guide member fixed to a predetermined portion of the building; A movable member that is integrated with the other end of the flexible sheet having one end fixed to a predetermined location and is movable by being guided by the guide member; and a tensioning unit that allows the movable member to move from outside the building. A seat stretching apparatus, comprising: driving the movable member by operating the stretching means to reciprocate the flexible sheet on the surface of the building. 2. The seat stretching apparatus according to claim 1, wherein the guide member is located above the roof of the building and is formed in an arch along the roof, and is formed in an arch by the side pillars of the building. Characterized in that both ends are integrally supported. 3. The seat stretching apparatus according to claim 1, wherein the stretching means includes a chain wheel operated outside the building, and a loop-shaped string-shaped transmission member worn on the chain wheel. Wherein the string-shaped transmission member is connected to the movable member, and moves the movable member in any one of the reciprocating directions according to the rotation direction of the chain wheel. 4. The sheet stretching apparatus according to claim 1, wherein the movable member has a movable portion main body having a plurality of rolling wheels disposed at a position to sandwich the guide member. A sheet stretching device, wherein one end of the flexible sheet is attached. 5. The seat stretching apparatus according to claim 1, wherein the guide members are arranged at least at both ends in the depth direction of the building, and the movable members are provided on the guide members, respectively, and between the movable members. A sheet stretching device, wherein a support member having one end integrated with the flexible sheet is provided. 6. The sheet stretching apparatus according to claim 3, wherein the string-shaped transmission member is provided on a sprocket provided at a plurality of locations along an arch shape of the chain wheel and the guide member of the stretching means. A sheet stretching apparatus, wherein the sheet stretching apparatus is wound around and a part of the sheet stretching apparatus is collectively connected to the movable member.