A cotton quilt rolling control device

Abstract

This utility model relates to the field of greenhouse technology, and provides a control device for rolling up greenhouse quilts, including a drive motor, a reversing switch, a first switching device, a second switching device, a phase sequence detection module, an upper limit switch, and a lower limit switch. The drive motor is connected to the quilt roll that moves along the arc-shaped roof of the greenhouse. The reversing switch is located between the power supply and the drive motor. The reversing switch is connected to the drive motor through the first and second switching devices. The phase sequence detection module has a detection end, a first control end, and a second control end. The phase sequence detection module detects the phase sequence information on the power supply side of the reversing switch through the detection end. The first control end of the phase sequence detection module is connected to the first switching device through the upper limit switch. The second control end of the phase sequence detection module is connected to the second switching device through the lower limit switch. This utility model facilitates the user's control over the rolling up and down of the quilt roll, improves the efficiency of rolling up and down greenhouse quilts, and ensures operational safety.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse technology, and in particular to a control device for rolling up greenhouse cotton quilts. Background Technology

[0002] In greenhouse cultivation, the control of opening and closing cotton quilts is crucial for regulating greenhouse temperature and ensuring a suitable growing environment for crops. Traditionally, the opening and closing of greenhouse cotton quilts is mostly done manually. This method requires operators to constantly monitor the position of the machine head corresponding to the cotton quilt roll on the greenhouse's curved roof. If the machine head moves incorrectly, it can easily fall, causing serious accidents and significant losses. Therefore, for safety, operators must complete the opening and closing of cotton quilts in one greenhouse before operating on the next, resulting in relatively low operational efficiency.

[0003] In related technologies, although some devices have emerged that automatically control the unwinding and rolling of cotton quilts in greenhouses, these devices are unreliable in practical applications and cannot ensure the safety of greenhouse operations. Utility Model Content

[0004] This utility model provides a control device for rolling greenhouse quilts, which can at least solve or improve the above-mentioned problems in the current operation of rolling and unrolling greenhouse quilts. It can effectively reduce the workload of operators, improve the efficiency of rolling and unrolling greenhouse quilts, and ensure operational safety.

[0005] This utility model provides a control device for rolling up greenhouse cotton quilts, including:

[0006] A drive motor is configured to connect to a cotton quilt roll that can move along the arc-shaped roof of the greenhouse to drive the cotton quilt roll to wind up and unwind.

[0007] A reversing switch is configured to be located between the power source and the drive motor, and the reversing switch is used to switch the phase sequence of the power source supplying power to the drive motor;

[0008] A first switching device and a second switching device are connected in parallel, and the reversing switch is connected to the drive motor through the first switching device and the second switching device respectively;

[0009] The phase sequence detection module has a detection terminal, a first control terminal, and a second control terminal. The phase sequence detection module detects the phase sequence information of the power supply side of the reversing switch through the detection terminal.

[0010] An upper limit switch is configured to move with the cotton quilt roll and is triggered by a first trigger located on the top of the greenhouse. The first control terminal of the phase sequence detection module is connected to the upper limit switch and the first switching device.

[0011] The lower limit switch is configured to move with the cotton quilt roll and is triggered by a second trigger located at the bottom of the greenhouse. The second control terminal of the phase sequence detection module is connected to the lower limit switch and the second switching device.

[0012] Both the upper limit switch and the upper limit position switch are normally closed switches.

[0013] According to the present invention, a greenhouse cotton quilt rolling control device further includes: a floating bracket, the first end of which is configured to be connected to a mounting body, and the second end of which is connected to the drive motor;

[0014] The floating support is used to support the movement of the drive motor and the cotton quilt roll along the arc-shaped roof of the greenhouse.

[0015] According to the present invention, a greenhouse cotton quilt rolling control device is provided, wherein the floating support includes: a first connecting rod, the first end of which is configured to be rotatably connected to the mounting body;

[0016] The second link has a first end rotatably connected to the second end of the first link, and the second end of the second link is rotatably connected to the drive motor;

[0017] The first end of the cotton quilt roll is configured to connect to the top of the greenhouse, the second end of the cotton quilt roll is wound around a quilt rolling rod, and the drive motor is connected to the quilt rolling rod.

[0018] According to the present invention, a control device for rolling up a greenhouse quilt is provided, wherein the first switching device is a contactor and is equipped with a first coil and a first three-phase contact.

[0019] The first control terminal of the phase sequence detection module is connected to the first coil through the upper limit switch, and the forward / reverse switch is connected to the drive motor through the first three-phase contact.

[0020] According to the present invention, a control device for rolling up a greenhouse quilt is provided, wherein the second switching device is a contactor and is equipped with a second coil and second and third phase contacts;

[0021] The second control terminal of the phase sequence detection module is connected to the second coil through the lower limit switch, and the forward / reverse switch is connected to the drive motor through the second three-phase contact.

[0022] The first three-phase contacts and the second three-phase contacts are connected in parallel.

[0023] According to the present invention, a control device for rolling up a greenhouse quilt further includes: a power supply module; the power supply module and the phase sequence detection module are electrically connected to provide working power for the phase sequence detection module.

[0024] According to the present invention, a control device for rolling up a greenhouse quilt further includes: a power switch; the power switch is disposed between the power receiving side of the reversing switch and the power source, and the power switch is used to control the start or stop of the drive motor.

[0025] The greenhouse quilt rolling control device provided by this utility model allows users to selectively switch the forward and reverse switches according to their needs for rolling up or unrolling the quilt roll. The phase sequence detection module detects the phase sequence information on the power supply side of the forward and reverse switches in real time. The phase sequence detection module controls the first or second switch to close based on the detected phase sequence information, ensuring that the drive motor rotates according to the power supply phase sequence selected by the user. This allows the quilt roll to move along with the arc-shaped roof of the greenhouse while being rolled up or unrolled, and it can automatically stop when it reaches the limit position (the position of the first or second trigger).

[0026] As can be seen from the above, this utility model facilitates users in controlling the winding and unwinding of cotton quilt rolls, reduces the workload of operators, improves the efficiency of winding and unwinding greenhouse cotton quilts, and also helps to ensure operational safety. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the layout structure of the greenhouse cotton quilt rolling control device provided by this utility model on the greenhouse.

[0029] Figure 2 This is the electrical schematic diagram of the greenhouse cotton quilt rolling control device provided by this utility model.

[0030] Figure label:

[0031] 100. Greenhouse; 101. First trigger; 102. Second trigger; 200. Cotton quilt roll;

[0032] 1. Drive motor; 2. Reverse switch; 3. First switching device; 4. Second switching device; 5. Phase sequence detection module; 6. Upper limit switch; 7. Lower limit switch; 8. Floating bracket; 81. First connecting rod; 82. Second connecting rod; 9. Power supply module. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] The following is combined with Figures 1-2 The rolling control device for greenhouse cotton quilts provided in the present invention will be described in detail through specific embodiments and application scenarios.

[0035] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a quilt rolling control device for greenhouse cotton quilts, including:

[0036] The drive motor 1 is configured to be connected to a cotton quilt roll 200 that can move along the arc-shaped roof of the greenhouse 100 to drive the cotton quilt roll 200 to be rolled up and down; wherein the arc-shaped roof of the greenhouse 100 is covered with a solar film, the cotton quilt is configured to be laid on the solar film of the greenhouse 100, one end of the cotton quilt is usually configured to be connected to the top of the greenhouse 100, and the other end of the cotton quilt is rolled up to form a cotton quilt roll 200 for transmission connection with the drive motor 1.

[0037] Reversing switch 2 is configured to be located between the power supply and the drive motor 1. Reversing switch 2 is used to switch the phase sequence of the power supply to the drive motor 1.

[0038] The first switching device 3 and the second switching device 4 are connected in parallel. The reversing switch 2 is connected to the drive motor 1 through the first switching device 3 and the second switching device 4 respectively.

[0039] The phase sequence detection module 5 has a detection terminal, a first control terminal, and a second control terminal. The phase sequence detection module 5 detects the phase sequence information of the power supply side of the reversing switch 2 through the detection terminal. For example, the detection terminal of the phase sequence detection module 5 is equipped with three terminals, which are connected one-to-one with the three-phase lines of the power supply side of the reversing switch 2. The phase sequence detection module 5 can be a voltage comparison type phase sequence detection module or a phase detection type phase sequence detection module.

[0040] The upper limit switch 6 is configured to move with the quilt roll 200 and is triggered by the first trigger 101 located at the top of the greenhouse 100. The first control terminal of the phase sequence detection module 5 is connected to the first switching device 3 through the upper limit switch 6.

[0041] The lower limit switch 7 is configured to move with the quilt roll 200 and is triggered by the second trigger 102 located at the bottom of the greenhouse 100. The second control terminal of the phase sequence detection module 5 is connected through the lower limit switch 7 and the second switch device 4.

[0042] Among them, both the upper limit switch 6 and the upper limit switch 6 are normally closed switches.

[0043] It is understood that the drive motor 1 can be an AC motor, and a sliding guide structure can be provided between the drive motor 1 and the greenhouse 100, which guides the drive motor 1 to move along the arc-shaped side wall of the greenhouse 100. The sliding guide structure may include rollers and guide rail grooves. The rollers are connected to the drive motor 1 and are movably disposed in the guide rail grooves along their extension direction. The guide rail grooves extend along the arc-shaped roof of the greenhouse 100.

[0044] Reversing switch 2 can be a three-phase double-throw switch, such as... Figure 2 As shown, the reversing switch 2 has a receiving side and a supply side. The receiving side is provided with contacts A, B and C. Correspondingly, the supply side can be provided with contacts A1 and A2, contacts B1 and B2, and contacts C1 and C2. Contacts A1 and A2 are electrically connected and configured to be electrically connected to the A-phase power supply terminal of the drive motor 1. Contacts B1 and B2 are electrically connected and configured to be electrically connected to the B-phase power supply terminal of the drive motor 1. Contacts C1 and C2 are electrically connected and configured to be electrically connected to the C-phase power supply terminal of the drive motor 1.

[0045] In practical applications, the reversing switch 2 can be switched between a first state and a second state by switching the reversing switch 2. For example, when the reversing switch 2 is in the first state, contacts A and B1 are electrically connected, contacts B and A2 are electrically connected, and contacts C and C1 are electrically connected. At this time, the drive motor 1 can be configured to rotate clockwise to drive the quilt roll 200 to wind up. When the reversing switch 2 is in the second state, contacts A and A1 are electrically connected, contacts B and B2 are electrically connected, and contacts C and C2 are electrically connected. At this time, because the wiring sequence of the drive motor 1 corresponding to the A-phase power supply terminal and the B-phase power supply terminal has changed, the phase sequence of the power supply to the drive motor 1 has changed, and the drive motor 1 will rotate counterclockwise to drive the quilt roll 200 to unwind.

[0046] Both the first switching device 3 and the second switching device 4 can be devices that can receive control signals and switch states according to the control signals, such as electromagnetic relays, contactors, etc.

[0047] In addition, both the upper limit switch 6 and the lower limit switch 7 can be mechanical limit switches. These mechanical limit switches are normally closed, and only switch from closed to normally open when their contacts touch an obstacle or other trigger. The upper limit switch 6 is connected in series between the first control terminal of the phase sequence detection module 5 and the first switching device 3, while the lower limit switch 7 is connected in series between the second control terminal of the phase sequence detection module 5 and the second switching device 4.

[0048] like Figure 1 and Figure 2 As shown, when the user needs to control the quilt roll 200 to rewind, the reversing switch 2 can be switched to the first state. The power supply will then supply power to the drive motor 1 through the reversing switch 2. During this process, the phase sequence detection module 5 performs phase sequence detection. When it determines that the detected phase sequence is the one that causes the quilt roll 200 to rewind (at this time, the quilt roll 200 moves along the arc-shaped roof of the greenhouse 100 toward the top of the greenhouse 100), the phase sequence detection module 5 will control the first switch device 3 to close, and the drive motor 1 will be energized and drive the quilt roll 200 to rewind. When the quilt roll 200 is rolled up, it will move towards the top of the greenhouse 100. When the quilt roll 200 reaches the top of the greenhouse 100 (at this time, the end of the quilt away from the top of the greenhouse 100 is located at the top of the greenhouse 100), the upper limit switch 6 will touch the first trigger 101 located at the top of the greenhouse 100. The upper limit switch 6 will switch from the normally closed state to the normally open state. At this time, the first switching device 3 will be disconnected, causing the drive motor 1 to stop rotating. This prevents the quilt roll 200 from continuing to move at the top of the greenhouse 100.

[0049] Correspondingly, when the user needs to control the unwinding of the quilt roll 200, the reversing switch 2 can be switched to the second state. The power supply will then supply power to the drive motor 1 through the reversing switch 2. During this process, the phase sequence detection module 5 performs phase sequence detection. When it determines that the detected phase sequence is the one that causes the quilt roll 200 to unwind (at this time, the quilt roll 200 moves along the arc-shaped roof of the greenhouse 100 towards the bottom of the greenhouse 100), the phase sequence detection module 5 will control the second switch device 4 to close, and the drive motor 1 will be energized and drive the quilt roll 200. When the quilt roll 200 is unrolled, it will move towards the bottom of the greenhouse 100. When the quilt roll 200 reaches the bottom of the greenhouse 100 (at this time, the end of the quilt away from the top of the greenhouse 100 is located at the bottom of the greenhouse 100), the lower limit switch 7 will touch the second trigger 102 located at the bottom of the greenhouse 100. The lower limit switch 7 will switch from the normally closed state to the normally open state. At this time, the second switching device 4 will be disconnected, causing the drive motor 1 to stop rotating. This prevents the quilt roll 200 from continuing to move at the bottom of the greenhouse 100.

[0050] The greenhouse quilt rolling control device shown in this utility model allows users to selectively switch the forward / reverse switch 2 according to their needs for rolling up or unrolling the quilt roll 200. The phase sequence detection module 5 detects the phase sequence information on the power supply side of the forward / reverse switch 2 in real time. The phase sequence detection module 5 controls the first switching device 3 or the second switching device 4 to close based on the detected phase sequence information, ensuring that the drive motor 1 rotates according to the power supply phase sequence selected by the user. This allows the quilt roll 200 to move along with the arc-shaped roof of the greenhouse 100 while being rolled up or unrolled, and it can automatically stop when it reaches the limit position (the position of the first trigger 101 or the second trigger 102).

[0051] As can be seen from the above, this utility model facilitates the user's control over the unwinding and winding of the cotton quilt roll 200, reduces the workload of operators, improves the efficiency of unwinding and winding the cotton quilt in the greenhouse 100, and also helps to ensure operational safety.

[0052] In some embodiments, such as Figure 1 As shown, the greenhouse cotton quilt rolling control device also includes: a floating bracket 8, the first end of which is configured to be connected to the mounting body, and the second end of which is connected to the drive motor 1;

[0053] The floating support 8 is used to support the movement of the drive motor 1 and the cotton quilt roll 200 along the arc-shaped roof of the greenhouse 100.

[0054] Understandably, the floating support 8 is used to provide support for the movement of the drive motor 1 along the arc-shaped roof of the greenhouse 100. The floating support 8 can be a non-powered support. The floating support 8 can automatically switch states as the cotton roll 200 is rolled up and down. For example, the floating support 8 can deform so that it can provide support for the drive motor 1 when the drive motor 1 is in different positions on the arc-shaped roof of the greenhouse 100.

[0055] The floating support 8 can be composed of multiple sequentially hinged links. The floating support 8 can also be a gas spring that can extend and retract under external force. Other structural forms of the floating support 8 are not specifically limited.

[0056] In some embodiments, such as Figure 1 As shown, the floating support 8 includes: a first link 81 and a second link 82;

[0057] The first end of the first link 81 is configured to be rotatably connected to the carrier, the first end of the second link 82 is rotatably connected to the second end of the first link 81, and the second end of the second link 82 is rotatably connected to the drive motor 1.

[0058] The first end of the quilt roll 200 is configured to connect to the top of the greenhouse 100, the second end of the quilt roll 200 is wound around the quilt rolling rod, and the drive motor 1 is connected to the quilt rolling rod.

[0059] In practical applications, the first end of the first connecting rod 81 can be rotatably connected to an anchor point on the ground on one side of the greenhouse 100, and the length of the first connecting rod 81 is greater than the length of the second connecting rod 82. When the quilt roll 200 is at the bottom of the greenhouse 100, the included angle (usually an acute angle) between the first connecting rod 81 and the second connecting rod 82 reaches its minimum, and when the quilt roll 200 is at the top of the greenhouse 100, the included angle (usually an obtuse angle) between the first connecting rod 81 and the second connecting rod 82 reaches its maximum.

[0060] At the same time, at least two sets of floating supports 8 can be set up, with at least two sets of floating supports 8 arranged side by side along the length of the greenhouse 100 (the axial direction of the cotton roll 200).

[0061] In some embodiments, such as Figure 2 As shown, the first switching device 3 is a contactor, and is equipped with a first coil and a first three-phase contact;

[0062] The first control terminal of the phase sequence detection module 5 is connected to the first coil through the upper limit switch 6, and the reversing switch 2 is connected to the drive motor 1 through the first three-phase contact.

[0063] It is understandable that the first three-phase contact includes three first normally open contacts, which are connected in series in the three-phase power supply line of the drive motor 1. That is, the reversing switch 2 is connected to the three-phase power supply terminal of the drive motor 1 through the three first normally open contacts respectively.

[0064] Specifically, when the first control terminal of the phase sequence detection module 5 supplies power to the first coil, the three first normally open contacts close simultaneously; conversely, when the first coil is de-energized, the three first normally open contacts open simultaneously.

[0065] In some embodiments, such as Figure 2 As shown, the second switching device 4 is a contactor, and is equipped with a second coil and second and third phase contacts;

[0066] The second control terminal of the phase sequence detection module 5 is connected to the lower limit switch 7 and the second coil, and the reversing switch 2 is connected to the drive motor 1 through the second three-phase contact.

[0067] The first three-phase contacts and the second three-phase contacts are connected in parallel.

[0068] It is understandable that the second three-phase contact includes three second normally open contacts, which correspond one-to-one with the three first normally open contacts and are connected in parallel. The three second normally open contacts are connected in series in the three-phase power supply line of the drive motor 1. That is, the reversing switch 2 is connected to the three-phase power supply terminal of the drive motor 1 through the three second normally open contacts respectively.

[0069] Specifically, when the first control terminal of the phase sequence detection module 5 supplies power to the second coil, the three second normally open contacts close simultaneously; conversely, when the second coil is de-energized, the three second normally open contacts open simultaneously.

[0070] In some embodiments, such as Figure 2 As shown, the greenhouse cotton quilt rolling control device also includes: a power supply module 9; the power supply module 9 and the phase sequence detection module 5 are electrically connected to provide working power for the phase sequence detection module 5.

[0071] The power module 9 can be a battery, an AC-DC converter, or a DC-DC converter.

[0072] In some embodiments, the greenhouse quilt rolling control device further includes a power switch; the power switch can be a knife switch or a push-button switch, the power switch is located between the power receiving side of the reversing switch 2 and the power source, and the power switch is used to control the start or stop of the drive motor 1.

[0073] In practical applications, during the winding and unwinding of the quilt roll 200, the user can turn off the power at any time using the power switch, so that the quilt roll 200 (or drive motor 1) stops at any position without affecting the next start and stop operation.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 this utility model.

Claims

1. A device for controlling the rolling of greenhouse cotton quilts, characterized in that, include: A drive motor is configured to connect to a cotton quilt roll that can move along the arc-shaped roof of the greenhouse to drive the cotton quilt roll to wind up and unwind. A reversing switch is configured to be located between the power source and the drive motor, and the reversing switch is used to switch the phase sequence of the power source supplying power to the drive motor; A first switching device and a second switching device are connected in parallel, and the reversing switch is connected to the drive motor through the first switching device and the second switching device respectively; The phase sequence detection module has a detection terminal, a first control terminal, and a second control terminal. The phase sequence detection module detects the phase sequence information of the power supply side of the reversing switch through the detection terminal. An upper limit switch is configured to move with the cotton quilt roll and is triggered by a first trigger located on the top of the greenhouse. The first control terminal of the phase sequence detection module is connected to the upper limit switch and the first switching device. The lower limit switch is configured to move with the cotton quilt roll and is triggered by a second trigger located at the bottom of the greenhouse. The second control terminal of the phase sequence detection module is connected to the lower limit switch and the second switching device. Both the upper limit switch and the upper limit position switch are normally closed switches.

2. The greenhouse cotton quilt rolling control device according to claim 1, characterized in that, Also includes: A floating support, wherein a first end of the floating support is configured to be connected to a mounting body, and a second end of the floating support is connected to the drive motor; The floating support is used to support the movement of the drive motor and the cotton quilt roll along the arc-shaped roof of the greenhouse.

3. The greenhouse cotton quilt rolling control device according to claim 2, characterized in that, The floating support includes: A first link, the first end of which is configured to be rotatably connected to the carrier; The second link has a first end rotatably connected to the second end of the first link, and the second end of the second link is rotatably connected to the drive motor; The first end of the cotton quilt roll is configured to connect to the top of the greenhouse, the second end of the cotton quilt roll is wound around a quilt rolling rod, and the drive motor is connected to the quilt rolling rod.

4. The greenhouse cotton quilt rolling control device according to claim 1, characterized in that, The first switching device is a contactor, and is equipped with a first coil and a first three-phase contact; The first control terminal of the phase sequence detection module is connected to the first coil through the upper limit switch, and the forward / reverse switch is connected to the drive motor through the first three-phase contact.

5. The greenhouse cotton quilt rolling control device according to claim 4, characterized in that, The second switching device is a contactor, and is equipped with a second coil and second and third phase contacts; The second control terminal of the phase sequence detection module is connected to the second coil through the lower limit switch, and the forward / reverse switch is connected to the drive motor through the second three-phase contact. The first three-phase contacts and the second three-phase contacts are connected in parallel.

6. The greenhouse cotton quilt rolling control device according to any one of claims 1 to 5, characterized in that, Also includes: Power module; The power supply module and the phase sequence detection module are electrically connected to provide power for the operation of the phase sequence detection module.

7. The greenhouse cotton quilt rolling control device according to any one of claims 1 to 5, characterized in that, Also includes: Power switch; The power switch is located between the power receiving side of the reversing switch and the power source, and the power switch is used to control the start or stop of the drive motor.

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