Rotating machine for film sheets for ventilation in vinyl greenhouses

Abstract

To provide a rotary machine capable of being efficiently assembled in a compact design with a small number of components and involving reduced production cost.SOLUTION: A winding shaft M at an end of a film sheet S is connectable to a shaft 22 of a driven bevel gear 21 which engages with a driving bevel gear 20 serving as a bevel gear 2 in orthogonal arrangement. A groove part 23 is formed in an outer periphery of a winding shaft M coupling side of the shaft 22 of the driven bevel gear 21, with a bearing 5 arranged on an outer periphery of the groove part 23. A rotary transmission device 3 has a brake spring and a shaft pin such that an output shaft 39 can be rotated only by rotation of the input shaft 30, and the rotary transmission device is supported by a support body 4 with the driving bevel gear 20 connected to the output shaft 39. A fixing body 6 for externally fitting the bearing 5 on the outer periphery of the groove part 23 of the driven bevel gear 21 is coupled to the support body 4 supporting the rotary transmission device 3, such that the bevel gear 2 is positioned and fixed in the casing.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This invention belongs to the technical field of rotating machines used for winding up ventilation film sheets that cover vinyl greenhouses in the longitudinal direction as shown in Figure 7, and more specifically, it relates to a rotating machine for ventilation film sheets for vinyl greenhouses that smoothly winds up and lowers ventilation film sheets installed in the valleys of connected vinyl greenhouses, ventilation film sheets that cover the sides and gables of vinyl greenhouses, lining fill sheets and nets inside vinyl greenhouses, and film sheets at high altitudes inside and outside vinyl greenhouses. [Background technology]

[0002] Conventionally, the applicant has manufactured and implemented a rotating machine for a ventilation film sheet as shown in Figures 8 and 9. This machine is installed in a casing (not shown) and has a driving bevel gear a1 and a bevel gear arranged perpendicular to the driving bevel gear a1. Meshing The main components are a bevel gear a consisting of a driven bevel gear a2 and a rotation transmission device b that drives the bevel gear a, and a support housing c that supports the rotation transmission device b. The bevel gear a and the support housing c (shaft k) that supports the rotation transmission device b are sandwiched from the left and right by a pair of left and right pressing plates d of sheet metal parts via spacers e, and a cover f and a bottom plate g of sheet metal parts are arranged from above and below. In other words, the bevel gear a is assembled by assembling and fixing each part with a number of bolts h (or screws or rivets) to position and fix the bevel gear a. The symbol i in Fig. 9 indicates a bearing plate arranged above the horizontal driving bevel gear a1 of the bevel gear a. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3182596 Summary of the Invention [Problem to be solved by the invention]

[0004] The applicant's conventional product shown in Figures 8 and 9 has problems in that it has a large number of parts and is difficult to assemble. In particular, it requires a large number of bolts h (or screws or rivets) for assembly, and requires a pair of two pressure plates d to hold it from the left and right, as well as a cover f and a bottom plate g, which are sheet metal parts, from above and below, and the internal structure tends to be large and complex, so there is a need to develop a rotating machine with a compact design that has a small number of parts and is easy to assemble. In addition, since it is necessary to have a structure that suppresses the thrust caused by forces applied to the bevel gear a in the vertical and horizontal directions, there is the inconvenience of needing to add a cover f as shown in Figures 8 and 9 to prevent the driven bevel gear a2 from coming off.

[0005] Therefore, an object of the present invention is to provide a film sheet rotating machine for ventilation in a vinyl greenhouse, which has a small number of parts, a compact design, can be efficiently assembled, reduces manufacturing costs, and allows smooth winding up and down of the film sheet, making it easy to use. [Means for solving the problem]

[0006] As a means for solving the above problems, the invention described in claim 1 is a rotating machine for winding up and down a ventilation film sheet S covering a vinyl greenhouse B, a) a bevel gear 2, a rotation transmission device 3 that drives the bevel gear 2, and a support body 4 that supports the rotation transmission device 3 are loaded in a casing A; b) Orthogonal arrangement to the driving bevel gear 20 forming the bevel gear 2 Meshing A winding shaft M attached to an end of the film sheet S can be freely connected to a shaft 22 of the driven bevel gear 21, a groove portion 23 is formed on the outer periphery of the shaft 22 of the driven bevel gear 21 on the connection side of the winding shaft M, and a bearing 5 is disposed on the outer periphery of the groove portion 23. c) The rotation transmission device 3 is provided with a brake spring and a shaft pin, and is configured so that an output shaft 39 can rotate freely only by the rotation of the input shaft 30, and is supported by a support 4 with the drive bevel gear 20 connected to the output shaft 39; d) A fixed body 6, which fits from the outside into the bearing 5 on the outer periphery of the groove portion 23 of the driven bevel gear 21, is connected to the support body 4 which supports the rotation transmission device 3, and the bevel gear 2 is positioned and fixed within the casing A. This is a rotating machine for film sheets used for ventilation in vinyl greenhouses, characterized by the above.

[0007] The invention described in claim 2 is a rotating machine for film sheets for ventilation in vinyl greenhouses described in claim 1, characterized in that the bearing 5 is composed of a pair of half-split outer bearings 50 and inner bearings 51 or a right bearing and a left bearing, each of which has a curved inner periphery, and a fixed body 6 formed in an inverted U-shape fits the outer bearing 50 and the inner bearing 51 from the outside to fix the bearing 5.

[0008] The invention described in claim 3 is a rotating machine for a film sheet for ventilation of a vinyl greenhouse described in claim 2, characterized in that a pressure plate 8 that fixes the rotation transmission device 3 to the support 4 and a bearing plate 9 arranged between the driving bevel gear 20 located at the lower part of the inner bearing 51 of the bearing 5 are positioned and fixed by an inverted U-shaped fixed body 6 that fits into the bearing 5, and the inverted U-shaped fixed body 6 is fixed to the cylindrical support 4. Effect of the Invention

[0009] According to the rotating machine for film sheets for ventilation in vinyl greenhouses of claims 1 to 3, the bevel gear, the rotation transmission device that drives the bevel gear, and the support body that supports the rotation transmission device are loaded into the casing as the main components, and the bevel gear is positioned and fixed within the casing by an inverted U-shaped fixed body that fits from the outside into the bearing on the outer periphery of the groove portion of the driven bevel gear and is connected to the support body that supports the rotation transmission device. Therefore, the number of parts is reduced, thereby making the assembly more efficient, and costs are reduced by making the internal structure more compact. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1A is an overall perspective view showing a rotating machine for a ventilation film sheet of a vinyl greenhouse according to the present invention, and FIG. [Diagram 2] A is a rear view of the rotating machine shown in FIG. 1A, B is a front view, and C is a side view. [Diagram 3] A to E show an overall view of a rotating machine and a universal joint. A is a front view, B is a side view, C is a cross-sectional view of the universal joint portion shown in the cross section of line AA in B, D is a bottom perspective view showing the state in which the universal joint portion is separated, and E is a top perspective view of D. [Figure 4] A to E show a universal joint for a rotating machine of the present invention. A is a cross-sectional view taken along line AA of B, B is a side view, C is a cross-sectional view taken along line CC of E, D is a cross-sectional view taken along line BB of E, and E is a front view. [Diagram 5] A to H show the upper part (the lower end part of the input shaft) of the universal joint shown in Fig. 4. A is a front view showing the internal structure, B is a bottom view, C is a bottom perspective view, D is a cross-sectional view taken along line CC of A, E is a cross-sectional view taken along line BB of A, F is a side view, G is a cross-sectional view taken along line AA of F, and H is a top perspective view. [Figure 6] FIG. 2 is a perspective view showing a state in which a winding shaft and a handle shaft are attached to the rotating machine of the present invention in use. [Figure 7] FIG. 1 is an overall view showing a rotating machine for a ventilation film sheet that covers a vinyl greenhouse in the longitudinal direction. [Figure 8] 1A is a perspective view, FIG. 1B is a front view, FIG. 1C is a side view, and FIG. [Figure 9] FIG. 9 is an exploded perspective view of the conventional rotating machine shown in FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The rotating machine for the ventilation film sheet of the vinyl greenhouse of the present invention is suitable for operating a ventilation opening and closing system, for example, by wrapping the side and roof surface of the vinyl greenhouse B in an unfastened state as shown in Fig. 7, winding the lower end (or upper end) of the plastic film sheet S, which is fastened only at the upper end (or lower end), around a winding shaft M, and rotating the winding shaft M forward with a handle shaft H of the rotating machine to smoothly wind up the film sheet S with little force to form a ventilation opening, or conversely, by rotating the winding shaft M in the reverse direction to wind down the film sheet S and close the ventilation opening with the film sheet S. It is also suitable for winding up and winding down the ventilation film sheet S provided in the valley of a connected vinyl greenhouse B (not shown), the ventilation film sheet S covering the side and gable of the vinyl greenhouse B, and further the lining film sheet S and net inside the vinyl greenhouse B, and the film sheet B at high places inside and outside the vinyl greenhouse B.

[0012] The basic usage of this rotating machine is as shown in FIG. 6, in which a bevel gear 2, a rotation transmission device 3 that drives the bevel gear 2, and a support 4 that supports the rotation transmission device 3 are mounted in a casing A. Meshing A reel M attached to an end of a film sheet S covering a vinyl greenhouse B is connected to the shaft 22 of the driven bevel gear 21, and the lower end of the input shaft 30 of the rotation transmission device 3 is configured as a centered universal joint T structure. By rotating the rod-shaped handle shaft H connected to the universal joint T, the reel M rotates, and the film sheet S is smoothly wound up and down (Figure 8).

[0013] Although a detailed diagram of the internal structure of the rotation transmission device 3 is omitted, for example, a coil-shaped brake spring having hook parts bent so as to protrude inward at both ends is disposed in a cylindrical brake drum 36 in an inscribed state, and an input shaft 30 and an output shaft 39 are disposed at both ends of an axle pin disposed on the rotation center line, facing each other rotatably around the coaxial pin, and a rotation transmission part and a rotation transmission receiving part protrude from each inner end of the input shaft 30 and the output shaft 39 in a parallel arrangement with the axle pin, and the rotation transmission part of the input shaft 30 abuts on the inner part of the hook parts at both ends of the brake spring to reduce the diameter of the brake spring, and the rotation transmission receiving part of the output shaft 39 abuts on the outer part of the hook parts to expand the diameter of the brake spring. A rotating handle shaft H as shown in Figures 6 and 7 is attached to the input shaft 30 protruding outside the brake drum 36, and a bevel gear 2 (drive bevel gear 20) is connected to the output shaft 39 protruding on the opposite side outside the brake drum 36. In particular, the input shaft 30 and the output shaft 39 are preferably made of stainless steel pipes having through holes. Such stainless steel castings provide strength and flexibility in terms of shape. However, the material is not limited to stainless steel, and aluminum, etc., may also be used. The rotation transmission device 3, which is thus equipped with a brake spring and an axle pin and is configured so that the output shaft 39 can rotate freely only by the rotation of the input shaft 30, is supported on a cylindrical support 4 with the drive bevel gear 20 connected to the output shaft 39, as described below.

[0014] The bevel gear 2 of this embodiment will be described. As shown in Figs. 1 to 3, the bevel gear 2 is made up of a small horizontally disposed driving bevel gear 20 and a large driven bevel gear 21 disposed perpendicular to the driving bevel gear 20. MeshingThe driven bevel gear 21 is configured so that the winding shaft M attached to the end of the film sheet S can be freely connected to the shaft 22 on the winding shaft M side of the driven bevel gear 21. The shaft 22 is formed with a through shaft hole 24, and the winding shaft M can be freely connected to the shaft hole 24 from either the front side or the rear side. In this embodiment, as shown in the upper right of Fig. 6, the winding shaft M is connected to the shaft hole 24 on the rear side. In addition, a groove 23 is formed in the circumferential direction on the outer periphery of the shaft 22 of the driven bevel gear 21 on the side where the winding shaft M is connected, and a bearing 5 is disposed on the outer periphery of the groove 23.

[0015] 1B, the bearing 5 is composed of a pair of halved outer bearing 50 and inner bearing 51, each of which has a curved inner periphery. However, the bearing 5 may also be composed of a pair of right and left bearings (not shown). An inverted U-shaped fixed body 6 with bolt holes fits the outer bearing 50 and inner bearing 51 from the outside to fix the bearing 5. That is, a bolt hole press plate 8 for fixing the rotation transmission device 3 to the support 4 and a bolt hole bearing plate 9 arranged between the drive bevel gear 20 located below the inner bearing 51 of the bearing 5 of the above-mentioned configuration are fixed with bolts 1 by an inverted U-shaped fixed body 6 that fits into the bearing 5 from the outside, and the inverted U-shaped fixed body 6 is fixed with bolts 1 to a bolt hole bulge 40 provided on the upper outer periphery of the cylindrical support 4 that supports the rotation transmission device 3, thus assembling the bevel gear 2 by clamping it from above and below within the casing A and positioning it (Figure 1A). With the output shaft 39 of the rotation transmission device 3 inserted through a through hole 80 drilled in the center of the pressing plate 8, the pressing plate 8 presses the brake drum 36 of the rotation transmission device 3 from above and is fixed to the support body 4. The output shaft 39 of the rotation transmission device 3 is inserted through a through hole 90 drilled in the center of the bearing plate 9, and its tip is journaled on the underside of the inner bearing 51 (FIG. 1B).

[0016] Next, the universal joint T of the input shaft 30 of the above-mentioned rotation transmission device 3 will be described. As shown in Figures 4 and 5, the lower end of the rotation transmission device 3 constituting the universal joint T on the input shaft 30 side is curved into a convex hemispherical shape (Figure 5), and the upper end of the coupling 7 that receives the convex hemispherical lower end 31 on the input shaft 30 side is curved into a concave hemispherical shape, and the convex hemispherical lower end 31 on the input shaft 30 side is fitted into the concave hemispherical upper end 70 of the coupling 7 (Figure 4).

[0017] Specifically, as shown in Fig. 4D, the outer periphery of the convex hemispherical lower end 31 on the input shaft 30 side of the rotation transmission device 3 described above is formed slightly smaller than the inner periphery of the concave hemispherical upper end 70 of the coupling 7 to reduce the dimensional difference of the mating hemispherical shapes, and is implemented in a form in which even if there is an angle, the centering is not performed and the center does not shift without swinging. The pin hole 32 formed laterally in the convex hemispherical lower end 31 on the input shaft 30 side and the pin hole 71 formed in the concave hemispherical upper end 70 of the coupling 7 are connected by a pin P that is inserted at a common position so that the center point of the insertion pin P is the same.

[0018] The pin hole 32 of the convex hemispherical lower end 31 on the input shaft 3 side is formed as a gradually diverging hole from a circular center 33 to left and right vertically elongated openings 34 formed as vertical ovals (FIGS. 4A and 4C), as shown in FIG. 5. Therefore, the insertion pin P moves only vertically like a seesaw within the range of the left and right diverging holes (32) with the circular center 33 as the center point. If the opening 34 were formed as a 360° circle, the rattle would increase and the movement would become sluggish, but by forming the opening 34 as a vertical oval as in this embodiment, a smooth rotational movement is realized.

[0019] Although the embodiments have been described above with reference to the drawings, it should be noted that the present invention is not limited to the illustrated examples, and includes the range of design modifications and application variations that would normally be made by a person skilled in the art, provided that the scope does not deviate from the technical concept of the present invention. [Explanation of symbols]

[0020] B Vinyl greenhouse S film sheet M Winding shaft H Handle shaft P-pin T universal joint A Casing 1 Volt 2 Bevel gear 20 Drive bevel gear 21 Driven bevel gear 22 Axis 23 Groove 24 Shaft hole 3 Rotation transmission device 30 Input shaft 31 Lower end of convex hemisphere shape 32 Pin hole (flared hole) 33 Circular center 34 Vertical opening 39 Output shaft 4 Support 5. Bearings 50 Outer bearing 51 Inner bearing 6 Inverted U-shaped fixed body 7 Coupling 70 Concave hemisphere top end 71 Pin hole 8 Presser plate 9 Bearing plate

Claims

1. A rotating machine for winding up and down a ventilation film sheet that covers a vinyl greenhouse. a) a bevel gear, a rotation transmission device that drives the bevel gear, and a support that supports the rotation transmission device are loaded in a casing; b) a winding shaft attached to an end of the film sheet can be freely connected to the shaft of a driven bevel gear that meshes with the driving bevel gear in an orthogonal arrangement, and a groove is formed on the outer periphery of the driven bevel gear shaft on the winding shaft connection side, and a bearing is disposed on the outer periphery of the groove; c) the rotation transmission device is provided with a brake spring and a shaft pin, and is configured so that an output shaft can rotate freely only by the rotation of an input shaft, and the output shaft is supported by a support body in a state in which the drive bevel gear is connected to the output shaft; d) a fixed body that fits a bearing on the outer periphery of the groove portion of the driven bevel gear from the outside is connected to the support body that supports the rotation transmission device, and the bevel gear is positioned and fixed within the casing; A film sheet rotating machine for ventilation in vinyl greenhouses, characterized by the above.

2. 2. A rotating machine for film sheets for ventilation in vinyl greenhouses as described in claim 1, characterized in that the bearings are composed of a pair of half-split outer bearings and inner bearings, or right-side bearings and left-side bearings, each of which has a curved inner periphery, and the bearings are fixed by fitting the outer bearing and inner bearing from the outside to a fixed body formed in an inverted U-shape.

3. A rotating machine for a film sheet for ventilation of a vinyl greenhouse as described in claim 2, characterized in that a pressing plate for fixing the rotation transmission device to a support and a bearing plate arranged between a drive bevel gear located at the lower part of the inner bearing of the bearing are positioned and fixed by an inverted U-shaped fixed body into which the bearing is fitted, and the inverted U-shaped fixed body is fixed to the cylindrical support.

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