Roller shutter device

Abstract

The utility model belongs to the technical field of agricultural mechanical equipment, and particularly relates to a roller shutter device. Comprising a speed reducer, a hollow shaft, a lead screw and a fixing nut, a driving mechanism is installed at the input end of the speed reducer, the hollow shaft is in transmission connection with the speed reducer, the lead screw penetrates through the hollow shaft and is in key connection with the hollow shaft, the lead screw and the hollow shaft are coaxially distributed, the fixing nut is connected with the speed reducer, and the fixing nut is connected with the speed reducer. The lead screw is in threaded connection with the fixing nut, and the front end and the rear end of the lead screw are used for installing rope winding pipes. The driving mechanism is used for driving the speed reducer to operate and driving the hollow shaft and the lead screw to rotate, the lead screw moves progressively along the fixing nut when rotating relative to the fixing nut, meanwhile, the rope winding pipes installed at the two ends of the lead screw move progressively when rotating, ropes can be arranged on the rope winding pipes in order, and the situation that the ropes are located at the same position all the time during winding is avoided; and knotting and disorder of the rope are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery and equipment, and particularly relates to a rolling curtain device. Background Art

[0002] In order to prevent the temperature in the greenhouse from changing too much and affecting the growth of crops, when planting crops, it is mostly necessary to cover the greenhouse with felt before sunset and roll up the felt after sunrise in the morning. When the temperature is relatively high, it is also necessary to use a sunshade net to cover the greenhouse to block sunlight. At the same time, in order to save manpower, a rolling curtain device is generally used to drive the rotation of a rope winding tube to pull the rope to wind, so as to drive the sunshade net or felt to cover or retract.

[0003] However, because the sunshade net or felt is relatively light, the rope cannot be effectively tightened when the rope winding tube rotates to wind the rope, and the rope always stays in the same position when the rope winds, which is likely to cause problems such as knotting and disorder of the rope. Therefore, it is necessary to design a rolling curtain device to solve the above problems. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a rolling curtain device to solve the problems raised in the above background art.

[0005] To achieve the above object, the utility model provides the following technical solution: a rolling curtain device, including a speed reducer, a hollow shaft, a lead screw and a fixing nut, a driving mechanism is installed at the input end of the speed reducer, the hollow shaft is in transmission connection with the speed reducer, the lead screw passes through the hollow shaft and is key-connected with the hollow shaft, the lead screw and the hollow shaft are coaxially distributed, the fixing nut is connected with the speed reducer, the lead screw is in threaded connection with the fixing nut, and the front and rear ends of the lead screw are used for installing a rope winding tube.

[0006] Further, the driving mechanism includes a pulley or a coupling, and the pulley or the coupling is installed on the input end of the speed reducer in a clearance fit manner by means of threads.

[0007] Further, the rolling curtain device further includes a check wheel, a check claw and a brake pad, the check wheel is installed on the input end of the speed reducer, the brake pads are installed on both the front and rear sides of the check wheel, and one end of the check claw is rotatably connected to the speed reducer, and the other end is used for clamping the check wheel.

[0008] Further, the rolling curtain device further includes a flange plate, the flange plate is located outside the speed reducer and is bolted to the outer wall of the speed reducer, and the fixing nut is used for connecting with the flange plate.

[0009] Further, the speed reducer includes a reduction gearbox, an input shaft, a first-stage reduction gear, and a second-stage reduction gear. The first-stage reduction gear and the second-stage reduction gear are both disposed within the reduction gearbox. The front end of the input shaft is disposed within the reduction gearbox, and the rear end is located outside the reduction gearbox and is in transmission connection with the drive mechanism. Saw teeth are provided on the outer side wall of the front end of the input shaft. The first-stage reduction gear meshes with the saw teeth on the outer side wall of the input shaft. The second-stage reduction gear is connected to the hollow shaft and meshes with the first-stage reduction gear. The fixing nut is used to connect with the reduction gearbox.

[0010] Further, the speed reducer includes a worm and a worm wheel. A pulley or a coupling is mounted on the worm. A check wheel is also mounted on the worm. The worm meshes with the worm wheel, and the worm wheel is connected to the hollow shaft.

[0011] The technical effects and advantages of the present utility model are as follows:

[0012] 1. The drive mechanism drives the operation of the speed reducer, drives the rotation of the hollow shaft and the lead screw. When the lead screw rotates relative to the fixing nut, it progresses sequentially along the fixing nut. At the same time, when the rope winding tubes mounted at both ends of the lead screw rotate, they also achieve sequential progression, enabling the rope to be orderly arranged on the rope winding tubes, avoiding the rope always staying in the same position during winding, and preventing the rope from knotting and getting disordered.

[0013] Other features and advantages of the present utility model will be described in the subsequent description. And, in part, they will be obvious from the description, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 Shows a schematic structural view of the rolling curtain device according to an embodiment of the present utility model;

[0016] Figure 2 Shows a partial schematic structural view of the rolling curtain device according to an embodiment of the present utility model;

[0017] Figure 3 Shows a schematic structural view of the speed reducer according to an embodiment of the present utility model;

[0018] Figure 4The structural schematic diagram of the hollow shaft according to the embodiment of the present utility model is shown.

[0019] Reference numerals: 11, speed reducer; 12, input shaft; 13, first-stage reduction gear; 14, second-stage reduction gear; 2, hollow shaft; 21, mounting key; 3, lead screw; 4, fixing nut; 51, check wheel; 52, check claw; 53, brake pad; 6, flange; 7, pulley. Specific embodiments

[0020] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the embodiment of the present utility model, the positive direction of the X axis is the front, the negative direction of the X axis is the rear, the positive direction of the Y axis is the left, the positive direction of the Y axis is the right, the positive direction of the Z axis is the upper, and the positive direction of the Z axis is the lower.

[0022] As Figures 1 to 4 shown, a rolling curtain device according to the embodiment of the present utility model includes a speed reducer, a hollow shaft 2, a lead screw 3 and a fixing nut 4. A driving mechanism is installed at the input end of the speed reducer. The hollow shaft 2 is in transmission connection with the speed reducer. The lead screw 3 passes through the hollow shaft 2 and is in key connection with the hollow shaft 2. The lead screw 3 and the hollow shaft 2 are coaxially distributed. The fixing nut 4 is connected to the speed reducer. The lead screw 3 is in threaded connection with the fixing nut 4. The front and rear ends of the lead screw 3 are used for installing a rope winding tube.

[0023] Specifically, there is a mounting key 21 inside the hollow shaft 2 for key connection with the lead screw 3 through the mounting key 21. The axial direction of the lead screw 3 faces the front and rear directions.

[0024] In this embodiment, the driving mechanism is used to drive the speed reducer to operate, thereby driving the hollow shaft 2 to rotate. The key connection between the hollow shaft 2 and the lead screw 3 is used to drive the lead screw 3 to rotate. The lead screw 3 is in threaded connection with the fixing nut 4, and the fixing nut 4 is connected to the speed reducer. When the lead screw 3 rotates relative to the fixing nut 4, the lead screw 3 simultaneously generates a movement in the front and rear directions, so that the rope winding tube can be driven to rotate and move in the front and rear directions at the same time. Thus, it is beneficial for the lead screw 3 to progress sequentially along the fixing nut 4. At the same time, when the rope winding tubes installed at both ends of the lead screw 3 rotate, they progress sequentially, so that the rope can be arranged on the rope winding tube orderly, avoiding the rope being always in the same position when it is wound, and preventing the rope from knotting and getting disordered.

[0025] Optionally, the drive mechanism includes a pulley 7 or a coupling, and the pulley 7 or the coupling is installed on the input end of the speed reducer in a threaded clearance fit manner.

[0026] Specifically, the pulley 7 or the coupling is installed on the input end of the speed reducer in a threaded clearance fit manner, and a gasket nut is used to block the outside to prevent falling off.

[0027] In this embodiment, by setting the drive mechanism as the pulley 7 or the coupling, the pulley 7 and the coupling can be used to drive the speed reducer to operate.

[0028] Optionally, as Figure 2 and Figure 3 shown, the rolling curtain device further includes a check wheel 51, a check claw 52 and a brake pad 53. The check wheel 51 is installed on the input end of the speed reducer, and the brake pads 53 are installed on both the front and rear sides of the check wheel 51. One end of the check claw 52 is rotatably connected to the speed reducer, and the other end is used to catch the check wheel 51.

[0029] Specifically, the check claw 52 is located above the check wheel 51. Secondly, a torsion spring is provided on the check claw 52 for automatic return.

[0030] In this embodiment, when the output end of the speed reducer drives the input end of the speed reducer to rotate, the thread on the pulley 7 or the coupling presses the brake pad 53, so that the check wheel 51 rotates with the input end, and the upper check claw 52 catches the check wheel 51 to achieve braking. Thus, the reverse rotation of the rolling curtain device during use can be avoided, ensuring the stability of the rolling curtain device during use.

[0031] Optionally, as Figure 1 and Figure 2 shown, the rolling curtain device further includes a flange 6. The flange 6 is located outside the speed reducer and is bolted to the outer wall of the speed reducer, and the fixing nut 4 is used to connect to the flange 6.

[0032] In this embodiment, by installing the flange 6 on the speed reducer housing 11, it is beneficial to connect the fixing nut 4 to the speed reducer through the flange 6. Secondly, the flange 6 is bolted to the outer wall of the speed reducer, which is beneficial to the disassembly and assembly of the flange 6.

[0033] Optionally, as Figures 1 to 4As shown in the figure, the speed reducer of an embodiment of the present utility model includes a reduction gearbox 11, an input shaft 12, a first-stage reduction gear 13, and a second-stage reduction gear 14. The first-stage reduction gear 13 and the second-stage reduction gear 14 are both arranged inside the reduction gearbox 11. The front end of the input shaft 12 is arranged inside the reduction gearbox 11, and the rear end is located outside the reduction gearbox 11 and is in transmission connection with the driving mechanism. A sawtooth is arranged on the outer side wall of the front end of the input shaft 12. The first-stage reduction gear 13 meshes with the sawtooth on the outer side wall of the input shaft 12. The second-stage reduction gear 14 is connected to the hollow shaft 2 and meshes with the first-stage reduction gear 13. The fixing nut 4 is used to connect to the reduction gearbox 11.

[0034] Specifically, the rear end of the input shaft 12 is in transmission connection with a pulley 7 or a coupling. Secondly, the check wheel 51, the check pawl 52, and the brake pad 53 are all located outside the reduction gearbox 11. The check wheel 51 is installed at the rear end of the input shaft 12. The check wheel 51 and the brake pad 53 are both located between the outer side wall of the reduction gearbox 11 and the pulley 7 or the coupling. One end of the check pawl 52 is rotatably connected to the reduction gearbox 11. The axial directions of the input shaft 12, the first-stage reduction gear 13, and the second-stage reduction gear 14 are parallel. In addition, the first-stage reduction gear 13 includes a large gear, a small gear, and a connecting shaft. The large gear and the small gear are both arranged on the connecting shaft and are coaxially distributed. The large gear meshes with the sawtooth on the outer side wall of the input shaft 12, and the small gear meshes with the second-stage reduction gear 14.

[0035] In this embodiment, the input shaft 12 is driven to rotate by the pulley 7 or the coupling, and the first-stage reduction gear 13 is driven to rotate by the input shaft 12. The second-stage reduction gear 14 is driven to rotate by the first-stage reduction gear 13, so as to drive the hollow shaft 2 and the lead screw 3 to rotate. Furthermore, the lead screw 3 advances step by step along the fixing nut 4. At the same time, when the rope winding tubes installed at both ends of the lead screw 3 rotate, they also advance step by step, enabling the rope to be orderly arranged on the rope winding tubes.

[0036] Optionally, the speed reducer of another embodiment of the present utility model includes a worm and a worm wheel. The pulley 7 or the coupling is installed on the worm. The check wheel 51 is also installed on the worm. The worm meshes with the worm wheel, and the worm wheel is connected to the hollow shaft 2.

[0037] In this embodiment, a pulley 7 or a coupling is used to drive the worm to rotate. The worm engages with the worm wheel to drive the worm wheel to rotate, thereby driving the hollow shaft 2 and the lead screw 3 to rotate, causing the lead screw 3 to advance step by step along the fixed nut 4. At the same time, the rope winding tubes installed at both ends of the lead screw 3 achieve step-by-step advancement when rotating, enabling the rope to be orderly arranged on the rope winding tubes. Secondly, a check wheel 51 is installed on the worm. When the output end of the speed reducer drives the input end of the speed reducer to rotate, the thread on the pulley 7 or the coupling presses the brake pad 53, causing the check wheel 51 to rotate with the worm, and the upper check claw 52 catches the check wheel 51 to achieve braking.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roller shutter device, characterized in that, It includes a speed reducer, a hollow shaft (2), a lead screw (3) and a fixed nut (4). A driving mechanism is installed at the input end of the speed reducer. The hollow shaft (2) is in transmission connection with the speed reducer. The lead screw (3) passes through the hollow shaft (2) and is key-connected to the hollow shaft (2). The lead screw (3) and the hollow shaft (2) are coaxially distributed. The fixed nut (4) is connected to the speed reducer. The lead screw (3) is in threaded connection with the fixed nut (4). The front and rear ends of the lead screw (3) are used for installing a rope winding tube.

2. The rolling curtain device according to claim 1, characterized in that, The driving mechanism includes a pulley (7) or a coupling. The pulley (7) or the coupling is installed at the input end of the speed reducer in a clearance fit in a threaded manner.

3. The rolling curtain device according to claim 2, characterized in that It also includes a check wheel (51), a check claw (52) and a brake pad (53). The check wheel (51) is installed at the input end of the speed reducer. The brake pads (53) are installed on both the front and rear sides of the check wheel (51). One end of the check claw (52) is rotatably connected to the speed reducer, and the other end is used for clamping the check wheel (51).

4. The rolling curtain device according to claim 3, characterized in that, It also includes a flange (6). The flange (6) is located outside the speed reducer and is bolted to the outer wall of the speed reducer. The fixed nut (4) is used for connecting to the flange (6).

5. The rolling curtain device according to claim 4, characterized in that The speed reducer includes a reduction box (11), an input shaft (12), a first-stage reduction gear (13), and a second-stage reduction gear (14). The first-stage reduction gear (13) and the second-stage reduction gear (14) are both arranged in the reduction box (11). The front end of the input shaft (12) is arranged in the reduction box (11), and the rear end is located outside the reduction box (11) and is in transmission connection with the driving mechanism. Sawteeth are arranged on the outer wall of the front end of the input shaft (12). The first-stage reduction gear (13) meshes with the sawteeth on the outer wall of the input shaft (12). The second-stage reduction gear (14) is connected to the hollow shaft (2) and meshes with the first-stage reduction gear (13). The fixed nut (4) is used for connecting to the reduction box (11).

6. The rolling shutter device according to claim 4, wherein, The speed reducer includes a worm and a worm gear. The pulley (7) or the coupling is installed on the worm. The check wheel (51) is also installed on the worm. The worm meshes with the worm gear. The worm gear is connected to the hollow shaft (2).

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