Anti-reversal film rolling device

Abstract

The utility model discloses an anti-reversion film rolling device which comprises a film rolling device body, an input shaft of the film rolling device body is connected with a reversion locking assembly, and the reversion locking assembly comprises a fixing disc and a front cover. A clutch groove is formed in the end face of the side, deviating from the film reeler body, of the fixing disc, and a clutch disc is rotationally arranged in the clutch groove. The front cover is rotationally arranged on the side, provided with the clutch groove, of the fixed disc, and the end face of the front cover is provided with a shifting rod clamped into the shifting groove and the clutch limiting groove. After the input shaft of the film reeler body is in transmission connection with the clutch disc, when the front cover rotates in the circumferential direction, the cylinder in the clutch groove can be poked through the poke rod to enable the spring to contract so that the clutch disc can rotate along with the front cover, and the clutch disc can drive the input shaft of the film reeler body to rotate. After the front cover stops rotating, the cylinder in the clutch groove can firmly clamp the inner wall of the clutch groove and the outer side of the clutch disc under the acting force of the spring, so that the clutch disc is clamped and cannot rotate, and the film reeler body cannot rotate to achieve the locking purpose; and the operation safety of the film rolling device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film rolls, in particular to an anti-reversal film roll. Background Art

[0002] To produce off-season vegetables and fruits and organic foods, modern agricultural facilities, such as plastic greenhouses and greenhouses, are becoming increasingly popular. During greenhouse and plastic greenhouse cultivation, film winders are used to roll out or rewind film or covering materials such as shade nets to regulate light intensity, temperature, humidity, and ventilation, providing a suitable growing environment for crops.

[0003] Considering factors such as production efficiency, the area of ​​plastic greenhouses and greenhouses is increasing, and the specifications of the covering materials used are also increasing. In adjustable greenhouse curtain systems, the power for opening and rewinding the film or curtain is generally provided by an electric or manual film roller. In existing manual film rollers, the position of the curtain adjustment and reeling device often needs to be adjusted. When the curtain adjustment and reeling device is stopped at a certain position, its weight is transmitted to the manual film roller via a transmission rope, causing it to reverse. To ensure that the curtain adjustment and reeling device can remain stably in the desired position, a self-locking mechanism is provided on the manual film roller to prevent reversal. The self-locking mechanism is generally located at the output end of the manual film roller and adopts a torsion spring self-locking device. During use, since the weight of the curtain adjustment and reeling device is transmitted to the manual film roller via the transmission rope when it is stopped at a certain position, it is entirely borne by the torsion spring self-locking mechanism, which makes the torsion spring self-locking mechanism easily damaged and ineffective, resulting in the inability to adjust the greenhouse curtain, affecting the growth of cultivated plants. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide an anti-reverse film roll with a reverse locking function to prevent the film roll from rotating in the reverse direction, thereby improving the safety of operation.

[0005] The technical solution adopted by the utility model is: an anti-reverse film roller, comprising a film roller body, the input shaft of the film roller body is connected to a reverse locking assembly, the reverse locking assembly comprises a fixed disk and a front cover; the end face of the fixed disk facing away from the film roller body is provided with a clutch groove, a clutch disk is rotatably provided in the clutch groove, and the clutch disk is transmission-connected to the input shaft of the film roller body; the edge of the clutch disk is provided with a toggle groove and a clutch limit groove arranged oppositely, cylinders are provided on both sides of the clutch limit groove for rolling engagement with the inner circumferential wall of the clutch groove, and support springs are provided at both ends of the clutch limit groove for elastically supporting the cylinders; the front cover is rotatably provided on the side of the fixed disk where the clutch groove is provided, the front cover and the clutch disk are coaxially arranged, and the end faces opposite to the clutch disk are provided with toggle rods which are arranged oppositely and can respectively fit into the toggle groove and the clutch limit groove.

[0006] In this technical solution, the reverse locking assembly is mainly used to drive the input shaft of the film roller body to rotate, and at the same time prevent the film roller from being subjected to other external forces and causing the input shaft to rotate in the opposite direction; after the input shaft of the film roller body is connected to the clutch disc, the front cover is located on the outside of the clutch disc, and the toggle rod arranged on the inner side thereof is stuck in the toggle groove and the clutch limit groove. The front cover rotates circumferentially and uses the toggle rod to toggle the cylinder to contract the support spring, so that the clutch disc can rotate with the front cover, and then the output shaft of the film roller body rotates synchronously; after the front cover stops rotating, the cylinder in the clutch groove will be firmly stuck to the inner wall of the fixed disc and the outer side of the clutch disc by the force of the support spring, so that the clutch disc is fixed and stuck, thereby locking the input shaft of the film roller body to prevent the film roller from rotating in the opposite direction; it is beneficial to improve the safety of users operating the film roller.

[0007] Preferably, a rear cover is provided on the side of the fixed disk facing away from the front cover, and a through hole for the film roll input shaft to pass through is provided at the center of the rear cover.

[0008] Preferably, the cross section of the clutch limiting groove is an arc-shaped structure.

[0009] Preferably, a crank arranged radially along the front cover is fixed to the outer periphery of the front cover.

[0010] Preferably, the fixing plate is connected to a fixing frame, and an end of the fixing frame away from the fixing plate is provided with a fixing hole.

[0011] The beneficial effects of the present invention are as follows: the input shaft of the film roller body in the present invention is connected with the clutch disc through transmission, and the two toggle rods arranged on the inner side of the front cover are clamped into the toggle groove and the clutch limit groove, and the toggle rod is used to toggle the cylinder to compress the support spring, so that the clutch disc can rotate synchronously with the front cover, thereby causing the input shaft of the film roller body to rotate synchronously; after the front cover stops rotating, the clutch disc is acted upon by the support spring so that one of the cylinders is clamped on the inner wall of the clutch groove and the outer peripheral surface of the clutch disc, so that the clutch disc cannot rotate, thereby locking the output shaft of the film roller to prevent the film roller from rotating in the opposite direction; it is beneficial to improve the safety of users operating the film roller; and it has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0013] Figure 1 The reverse locking assembly of the anti-reverse film roll provided in the embodiment of the utility model is a three-dimensional Figure 1 .

[0014] Figure 2The reverse locking assembly of the anti-reverse film roll provided in the embodiment of the utility model is a three-dimensional Figure 2 .

[0015] Figure 3 This is a three-dimensional diagram of the assembly of the anti-reversal film roll provided in an embodiment of the present invention.

[0016] Figure numerals: film roll body 100, fixed plate 200, clutch slot 210, clutch plate 300, toggle slot 310, clutch limit slot 320, cylinder 400, support spring 500, front cover 600, toggle rod 700, rear cover 800, crank handle 900, fixed frame 1000. DETAILED DESCRIPTION

[0017] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0018] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0019] like Figures 1 to 3 As shown, the specific embodiment of the present invention provides an anti-reverse film roll, including a film roll body 100, the input shaft of the film roll body 100 is connected to a reverse locking assembly, the reverse locking assembly includes a fixed disk 200 and a front cover 600; the end surface of the fixed disk 200 facing away from the film roll body is provided with a clutch groove 210, a clutch disk 300 is provided in the clutch groove 210 for rotation, and the clutch disk 300 is connected to the input shaft of the film roll body 100 by transmission; the edge of the clutch disk 300 is provided with a toggle groove 310 and a The clutch limit groove 320 has cylinders 400 on both sides of the clutch limit groove 320 that roll with the inner circumferential wall of the clutch groove 210, and support springs 500 are provided at both ends of the clutch limit groove 320 to elastically support the cylinder 400; the front cover 600 is rotatably arranged on the side of the fixed disk 200 where the clutch groove 210 is provided, the front cover 600 is coaxially arranged with the clutch disk 300, and the end faces of the front cover 600 opposite to the clutch disk 300 are provided with toggle rods 700 that are arranged relatively and can be respectively inserted into the toggle groove 310 and the clutch limit groove 320.

[0020] like Figures 1 to 3As shown, through the above arrangement, the reverse locking assembly in this embodiment can be used to drive the input shaft of the film roller body 100 to rotate, and at the same time can prevent the film roller from being subjected to other external forces that cause the input shaft to rotate in the opposite direction; the input shaft of the film roller body 100 is transmission-connected to the clutch disc 300, and when the front cover 600 rotates circumferentially, the two toggle rods 700 arranged on the inner side thereof are inserted into the toggle groove 310 and the clutch limit groove 320, and the toggle rod 700 is used to toggle the cylinder to compress the support spring, so that the clutch disc 300 can rotate with the front cover. Thereby, the input shaft of the film roller body 100 rotates forward and reverse synchronously; after the front cover stops rotating, one of the cylinders located in the clutch limit groove is stuck on the inner wall of the clutch groove 210 and the outer wall of the clutch disc 300 under the action of the support spring, so that the clutch disc is fixed and cannot rotate, thereby locking the input shaft of the film roller body 100. Even if the film roller body has a tendency to rotate due to other external forces, it can be locked and cannot rotate, effectively preventing the film roller body from rotating in the opposite direction; it is beneficial to improve the safety of users operating the film roller.

[0021] like Figures 1 to 3 As shown, in this embodiment, a rear cover 800 is provided on the side of the fixed plate 200 facing away from the front cover 600. A through hole is defined in the center of the rear cover 800 for the film winder's input shaft to pass through. The fixed cover seals the rear end of the fixed plate 200. The through hole also allows the input shaft of the film winder body 100 to pass through the fixed plate 200 and establish a transmission connection with the clutch plate 300.

[0022] like Figures 1 to 3 As shown, in this embodiment, the cross-section of the clutch limit groove 320 is an arc-shaped structure, so that the cylinder 400 can be rolled and set on both sides of the clutch limit groove 320, and contact with the toggle rod 700 under the support of the support spring 500. Under the action of the support spring, the cylinder 400 can be stuck between the inner wall of the clutch groove and the outer periphery of the clutch disk 300, ensuring that the clutch disk is stably stuck to prevent the input shaft of the film roller body 100 from being unable to rotate, and effectively prevent the film roller body from rotating in the opposite direction.

[0023] like Figures 1 to 3 As shown, in actual application, the user needs to rotate the front cover 600 to rotate the input shaft of the film roller body 100. In order to facilitate the rotation of the front cover 600, this embodiment has a crank 900 fixed on the outer periphery of the front cover 600 and arranged radially along the front cover 600. The crank 900 increases the rotational torque of the front cover 600, making the rotation more labor-saving.

[0024] like Figures 1 to 3As shown, the reverse locking assembly needs to be assembled on the outside of the film winder body 100 during use. In this embodiment, a fixing bracket 1000 is connected to the fixing plate 200. The fixing bracket 1000 has a fixing hole at the end away from the fixing plate 200. In this way, after the clutch plate 300 of the reverse locking assembly is connected to the input shaft of the film winder body 100, the end of the fixing bracket 1000 can be fixed to the film winder body 100 via a bolt structure, thereby ensuring a stable assembly of the two parts and improving assembly stability.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. An anti-reversal film roll, comprising a film roll body (100), characterized in that: The input shaft of the film rolling device body (100) is connected to a reverse locking assembly, which includes: A fixed disk (200) is provided with a clutch groove (210) on the end surface of the fixed disk (200) facing away from the film roll body (100), a clutch disk (300) is rotatably provided in the clutch groove (210), and the clutch disk (300) is connected to the input shaft of the film roll body (100) by transmission; an edge of the clutch disk (300) is provided with a toggle groove (310) and a clutch limit groove (320) arranged oppositely, and cylinders (400) are provided on both sides of the clutch limit groove (320) and are in rolling engagement with the inner circumferential wall of the clutch groove (210), and support springs (500) are provided at both ends of the clutch limit groove (320) for elastically supporting the cylinder (400); A front cover (600) is rotatably arranged on a side of the fixed disk (200) provided with a clutch groove (210), the front cover (600) and the clutch disk (300) are coaxially arranged, and end surfaces of the front cover (600) opposite to the clutch disk (300) are provided with a toggle rod (700) that is arranged oppositely and can be respectively engaged with the toggle groove (310) and the clutch limit groove (320).

2. The anti-reversal film rolling device according to claim 1, characterized in that: A rear cover (800) is provided on the side of the fixed disk (200) facing away from the front cover (600), and a through hole for the film roll input shaft to pass through is provided at the center of the rear cover (800).

3. The anti-reversal film rolling device according to claim 1, characterized in that: The cross section of the clutch limiting groove (320) is an arc-shaped structure.

4. The anti-reversal film rolling device according to claim 1, characterized in that: A crank (900) is fixed to the outer periphery of the front cover (600) and is arranged radially along the front cover (600).

5. The anti-reversal film rolling device according to claim 1, characterized in that: The fixing plate (200) is connected to a fixing frame (1000), and a fixing hole is provided at one end of the fixing frame (1000) away from the fixing plate (200).

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