Greenhouse quilt limiter

Abstract

The utility model relates to the technical field of agricultural automation, and discloses a greenhouse cotton quilt limiter which comprises an equipment box fixed on a rack, and a roller shutter machine is fixedly mounted on the rack; a limiting switch assembly is installed in the equipment box, a supporting shaft is rotationally installed on the outer wall of the equipment box, and the supporting shaft is in direct transmission fit with the limiting switch assembly and is in transmission fit with a rolling pipe of the curtain rolling machine through a transmission mechanism. A controller is installed on the machine frame, and the curtain rolling machine and the limiting switch assembly are both electrically connected with the controller. The limiting switch assembly is installed on the machine frame, meanwhile, the limiting switch assembly is in linkage with rotation of the rolling pipe of the curtain rolling machine through the supporting shaft and the transmission mechanism, finally, the controller controls starting and stopping of the curtain rolling machine, the curtain rolling machine can be effectively prevented from moving out of a greenhouse, and then cotton quilts are prevented from falling off from the greenhouse and the rolling pipe.

Description

Technical Field

[0001] This utility model relates to the field of agricultural automation technology, and in particular to a greenhouse cotton quilt limiter. Background Technology

[0002] With the development of agricultural facilities, the application of greenhouse quilt rolling machines is becoming more and more widespread. The scale of greenhouses is also getting larger and larger, and the length of cotton quilts involved in greenhouse insulation, ventilation, and shading is also getting longer and longer. Taking the hanging rail type greenhouse cotton quilt rolling machine as an example, when the greenhouse is not large, the length of the cotton quilt is generally about 100 meters, and only one reducer is needed, which is usually located at one end or the middle of the greenhouse.

[0003] The greenhouse cotton quilt rolling machine described in announcement number CN222621752U includes a reducer, a first roll tube, a transmission frame, a second roll tube, and a cotton quilt; the transmission frame is provided between the first roll tube and the second roll tube, and the transmission frame includes a rotating shaft, a first support arm, and a second support arm. The first support arm includes a first support sleeve sleeved on the outer periphery of the rotating shaft, and the second support arm includes a second support sleeve sleeved at both ends of the rotating shaft and the second roll tube. Bearings are provided between the first support sleeve and the rotating shaft, and between the second support sleeve and the rotating shaft and the second roll tube.

[0004] Based on the above technical features, the problem is that in the existing technology, most quilt rolling machines use the cooperation of the rolling tube and the limit switch to prevent the rolling tube from moving out of the greenhouse and causing the quilts to fall off the greenhouse. However, since the quilts are not in a straight line, the diameters of the quilt tubes rolled onto the rolling tube are different, which causes the rolling tube to be unable to contact the limit switch when it moves to the end of the greenhouse, thus causing the quilts to fall off the rolling tube and the greenhouse.

[0005] Therefore, it is necessary to solve the above problems by using greenhouse cotton quilt limiters. Utility Model Content

[0006] The purpose of this utility model is to provide a greenhouse quilt limiter to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a greenhouse quilt limiter, comprising an equipment box fixed on a frame, on which a rolling shutter machine is fixedly installed; a limit switch assembly is installed inside the equipment box, and a support shaft is rotatably installed on the outer wall of the equipment box; the support shaft is directly driven by the limit switch assembly and also driven by the rolling tube of the rolling shutter machine through a transmission mechanism; a controller is installed on the frame, and the rolling shutter machine and the limit switch assembly are electrically connected to the controller.

[0008] Preferably, the transmission mechanism includes a transmission shaft rotatably mounted on the frame; the support shaft is driven to rotate via a first transmission assembly; and the transmission shaft is driven to rotate via a second transmission assembly.

[0009] Preferably, the first transmission component includes a first gear and a second gear; the first gear is fixedly sleeved on the transmission shaft, and the second gear is fixedly sleeved on the support shaft; the first gear and the second gear mesh with each other.

[0010] Preferably, the second transmission assembly includes a first sprocket and a second sprocket; the first sprocket is fixedly sleeved on the roller tube of the roller shutter machine, and the second sprocket is fixedly sleeved on the transmission shaft; the first sprocket and the second sprocket are driven and sleeved in the same chain.

[0011] Preferably, a mounting bracket is fixedly installed on the frame; the equipment box is fixed on the mounting bracket, and the drive shaft is rotatably connected to the mounting bracket.

[0012] Preferably, a pressure bar is fixedly installed on the mounting frame, and the pressure bar presses against the chain; the chain and the pressure bar slide against each other.

[0013] Preferably, the limit switch assembly includes a threaded rod and two micro switches; the threaded rod is rotatably mounted inside the equipment box and is coaxially and fixedly connected to the support shaft; the two micro switches are fixedly mounted inside the equipment box and are electrically connected to the controller.

[0014] Two push blocks are slidably installed inside the device box, and each push block corresponds to one of the two micro switches; each push block cooperates with the corresponding micro switch to control the start and stop of the micro switch.

[0015] The threaded rod passes through the two push blocks and is threadedly connected to both push blocks.

[0016] Preferably, a locking block is fixedly installed inside the device box; a locking groove is provided on the outer wall of the two push blocks along the axial direction of the threaded rod; the locking block is inserted into the locking groove of the two push blocks and engages with the two push blocks in a limited rotational fit; the locking groove of the two push blocks is in sliding fit with the locking block.

[0017] Preferably, the drive motor of the roller shutter machine is electrically connected to the controller.

[0018] The technical effects and advantages of this utility model are as follows: The limit switch assembly of this utility model is installed on the frame. At the same time, the limit switch assembly and the rotation of the roller shutter machine are linked through the support shaft and the transmission mechanism. Finally, the start and stop of the roller shutter machine are controlled by the controller, which can effectively prevent the roller shutter machine from moving out of the greenhouse, thereby preventing the cotton quilt from falling from the greenhouse and the roller. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional assembly structure of this utility model;

[0020] Figure 2 This is a partial schematic diagram of the three-dimensional assembly structure of this utility model;

[0021] Figure 3 This is a partial top view of the three-dimensional assembly structure of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0023] Figure 5 This is a schematic diagram of the transmission mechanism of this utility model;

[0024] Figure 6 This is a schematic diagram of the pusher block of this utility model.

[0025] In the diagram: 1. Frame; 2. Reducer; 3. Drive motor; 4. Belt; 5. Chain; 6. First sprocket; 7. Second sprocket; 8. Drive shaft; 9. Support shaft; 10. First gear; 11. Second gear; 12. Mounting bracket; 13. Equipment box; 14. Pressure rod; 15. Micro switch; 16. Threaded rod; 17. Push block; 18. Clamping block; 19. Tube roll. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figures 1 to 6 The greenhouse quilt limiter shown includes an equipment box 13 fixed on a frame 1, and a rolling shutter machine is fixedly installed on the frame 1.

[0028] Specifically, the roller shutter machine includes a drive motor 3, a reducer 2, and a roller tube 19. The reducer 2 is fixedly mounted on the frame 1, and a connecting seat is fixedly provided between the drive motor 3 and the reducer 2. A pulley is fixedly fitted onto both the output shaft of the drive motor 3 and the input shaft of the reducer 2, and the two pulleys are driven by the same belt 4.

[0029] The output shaft of reducer 2 is fixedly connected to the hose reel 19 via a flange and matching bolts and nuts. The hose reel 19 is used to reel in insulation sheets such as cotton quilts on the greenhouse.

[0030] A controller is fixedly installed on the frame 1, and the drive motor 3 is electrically connected to the controller to control the start and stop of the drive motor 3.

[0031] The above are existing technologies and will not be elaborated upon here.

[0032] A mounting bracket 12 is fixedly installed on the frame 1 using matching bolts, nuts, and clamps. The equipment box 13 is fixedly installed on the mounting bracket 12 using matching bolts and nuts.

[0033] Limit switch assemblies are installed inside equipment box 13.

[0034] Specifically, the limit switch assembly includes a threaded rod 16 and two microswitches 15. The threaded rod 16 is rotatably mounted inside the device housing 13. Two push blocks 17 are slidably mounted inside the device housing 13. In this embodiment, both push blocks 17 are annular blocks, and both push blocks 17 are sleeved on the threaded rod 16 and threadedly connected to the threaded rod 16.

[0035] An inverted L-shaped locking block 18 is fixedly installed inside the equipment box 13. The locking block 18 is elongated and its length is parallel to the axial direction of the threaded rod 16. A slot is formed on the outer wall of each of the two push blocks 17 along the axial direction of the threaded rod 16. The locking block 18 is inserted into the slot of the two push blocks 17 and engages with the two push blocks 17 to limit rotation, thereby preventing the two push blocks 17 from rotating when the threaded rod 16 rotates.

[0036] The slots of the two push blocks 17 slide in conjunction with the slot block 18 to ensure that the two push blocks 17 can slide.

[0037] Two microswitches 15 are fixedly installed inside the equipment box 13 and are electrically connected to the controller. The two microswitches 15 correspond to the upper limit position when rolling up the cotton quilt on the greenhouse and the lower limit position when laying the cotton quilt on the greenhouse, respectively.

[0038] Two push blocks 17 correspond one-to-one with two micro switches 15. Each push block 17 works in conjunction with a corresponding micro switch 15 to control the start and stop of the micro switch 15.

[0039] A support shaft 9 is rotatably mounted on the outer wall of the equipment box 13, and the support shaft 9 is coaxially and fixedly connected to the threaded rod 16.

[0040] The support shaft 9 is connected to the roller tube 19 of the roller shutter machine via a transmission mechanism.

[0041] Specifically, the transmission mechanism includes a transmission shaft 8, which is rotatably mounted on the frame 1. A support shaft 9 is in transmission engagement with the transmission shaft 8 through a first transmission assembly, which drives the support shaft 9 to rotate.

[0042] Specifically, the first transmission assembly includes a first gear 10 and a second gear 11. The first gear 10 is fixedly sleeved on the transmission shaft 8, and the second gear 11 is fixedly sleeved on the support shaft 9. The first gear 10 and the second gear 11 are meshed together.

[0043] The drive shaft 8 is connected to the roller tube 19 of the roller shutter machine via a second transmission assembly, which is used to drive the drive shaft 8 to rotate.

[0044] Specifically, the second transmission assembly includes a first sprocket 6 and a second sprocket 7. The first sprocket 6 is fixedly sleeved on the roller tube 19 of the roller shutter machine, and the second sprocket 7 is fixedly sleeved on the drive shaft 8. The first sprocket 6 and the second sprocket 7 are driven and sleeved within the same chain 5.

[0045] A pressure bar 14 is fixedly mounted on the mounting bracket 12, and the pressure bar 14 presses against the chain 5; the chain 5 slides against the pressure bar 14. The pressure bar 14 is used to keep the chain 5 in a taut state at all times.

[0046] Working principle: When the rolling shutter machine rolls up the cotton quilts on the greenhouse, the farmer uses a remote control to start the drive motor 3. The output shaft of the drive motor 3 drives the reducer 2 through the pulley and belt 4. The output shaft of the reducer 2 drives the winding tube 19 to roll up the cotton quilts. This working process is existing technology and will not be described in detail here.

[0047] When the coiled tube 19 rotates, it drives the first sprocket 6 to rotate. The first sprocket 6 drives the second sprocket 7 to rotate via the chain 5, and the second sprocket 7 drives the drive shaft 8 to rotate. The drive shaft 8 drives the first gear 10, and the first gear 10 drives the second gear 11 to rotate. The second gear 11 drives the support shaft 9 to rotate, and the support shaft 9 drives the threaded rod 16 to rotate.

[0048] When the threaded rod 16 rotates, it pushes the two push blocks 17 to slide towards the micro switch 15 corresponding to the upper limit position. When the reel 19 moves to the rear wall edge of the greenhouse top, the corresponding push block 17 contacts the micro switch 15 corresponding to the upper limit position. At this time, the push block 17 pushes the elastic contact of the micro switch 15, and the elastic contact presses the button of the micro switch 15 to generate an electrical signal. The generated electrical signal is transmitted to the controller, and the controller controls the drive motor 3 to stop.

[0049] Similarly, when the roller shutter machine lays the quilt on the greenhouse, the threaded rod 16 reverses, and the two push blocks 17 simultaneously slide towards the micro switch 15 corresponding to the lower limit. When the roller tube 19 moves to the ground at the front of the greenhouse, the corresponding push block 17 contacts the micro switch 15 corresponding to the lower limit. At this time, the push block 17 pushes the elastic contact of the micro switch 15, and the elastic contact presses the button of the micro switch 15 to generate an electrical signal. The generated electrical signal is transmitted to the controller, and the controller controls the drive motor 3 to stop.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A big greenhouse cotton quilt positioner, comprising a device box (13) fixed on a rack (1), and a roller shutter machine is fixedly installed on the rack (1); characterized in that: The equipment box (13) is equipped with a limit switch assembly. A support shaft (9) is rotatably mounted on the outer wall of the equipment box (13). The support shaft (9) is directly connected to the limit switch assembly and also connected to the roller tube (19) of the roller shutter machine through a transmission mechanism. A controller is installed on the frame (1). The roller shutter machine and the limit switch assembly are electrically connected to the controller.

2. The greenhouse cotton quilt positioner according to claim 1, characterized in that: The transmission mechanism includes a transmission shaft (8), which is rotatably mounted on the frame (1); the support shaft (9) is driven by the transmission shaft (8) through a first transmission assembly, which is used to drive the support shaft (9) to rotate; the transmission shaft (8) is driven by the roller tube (19) of the roller shutter machine through a second transmission assembly, which is used to drive the transmission shaft (8) to rotate.

3. The greenhouse cotton quilt positioner according to claim 2, characterized in that: The first transmission assembly includes a first gear (10) and a second gear (11); the first gear (10) is fixedly sleeved on the transmission shaft (8), and the second gear (11) is fixedly sleeved on the support shaft (9); the first gear (10) and the second gear (11) mesh with each other.

4. The greenhouse cotton quilt positioner according to claim 2, characterized in that: The second transmission assembly includes a first sprocket (6) and a second sprocket (7); the first sprocket (6) is fixedly sleeved on the roller tube (19) of the roller shutter machine, and the second sprocket (7) is fixedly sleeved on the transmission shaft (8); the first sprocket (6) and the second sprocket (7) are driven and sleeved in the same chain (5).

5. The greenhouse cotton quilt positioner according to claim 4, characterized in that: The mounting bracket (12) is fixedly installed on the frame (1); the equipment box (13) is fixed on the mounting bracket (12), and the drive shaft (8) is rotatably connected to the mounting bracket (12).

6. The greenhouse cotton quilt positioner according to claim 5, characterized in that: A pressure bar (14) is fixedly installed on the mounting bracket (12), and the pressure bar (14) presses on the chain (5); the chain (5) and the pressure bar (14) slide against each other.

7. The greenhouse cotton quilt positioner according to claim 1, characterized in that: The limit switch assembly includes a threaded rod (16) and two micro switches (15); the threaded rod (16) is rotatably mounted in the equipment box (13) and is coaxially fixedly connected to the support shaft (9); the two micro switches (15) are fixedly mounted in the equipment box (13) and are electrically connected to the controller. Two push blocks (17) are slidably installed inside the device box (13). The two push blocks (17) correspond one-to-one with two micro switches (15). Each push block (17) cooperates with the corresponding micro switch (15) to control the start and stop of the micro switch (15). The threaded rod (16) passes through the two push blocks (17) and is threadedly connected to the two push blocks (17).

8. The greenhouse cotton quilt positioner according to claim 7, characterized in that: The device box (13) is fixedly installed with a locking block (18); the outer walls of the two push blocks (17) are provided with locking grooves along the axial direction of the threaded rod (16); the locking block (18) is inserted into the locking grooves of the two push blocks (17) and engages with the two push blocks (17) to limit rotation; the locking grooves of the two push blocks (17) are in sliding engagement with the locking block (18).

9. The greenhouse cotton quilt positioner according to claim 7, characterized in that: The drive motor (3) of the roller shutter machine is electrically connected to the controller.

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